* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-03-22 22:47 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-03-22 22:47 UTC (permalink / raw
To: gentoo-commits
commit: f8fc60510d50d9fd52e4e90cc7516c393a341555
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Mar 22 22:47:43 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Mar 22 22:47:43 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=f8fc6051
Update for gcc 4.9 CPU optimization patch. See bug #572108
5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch b/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
index c4efd06..418201d 100644
--- a/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
+++ b/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
@@ -283,7 +283,7 @@ gcc version >=4.9
int
default "7" if MPENTIUM4 || MPSC
- default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
-+ default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || BROADWELL || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
++ default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
default "4" if MELAN || M486 || MGEODEGX1
default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2018-05-29 10:34 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2018-05-29 10:34 UTC (permalink / raw
To: gentoo-commits
commit: b9fd7bdba6609d0fa42485ee3cdee8f607a321ec
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue May 29 10:33:56 2018 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue May 29 10:33:56 2018 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=b9fd7bdb
Linux patches 4.1.50, 4.1.51, 4.1.52
0000_README | 12 +
1049_linux-4.1.50.patch | 18012 ++++++++++++++++++++++++++++++++++++++++++++++
1050_linux-4.1.51.patch | 2698 +++++++
1051_linux-4.1.52.patch | 15535 +++++++++++++++++++++++++++++++++++++++
4 files changed, 36257 insertions(+)
diff --git a/0000_README b/0000_README
index 3abfafc..431a915 100644
--- a/0000_README
+++ b/0000_README
@@ -239,6 +239,18 @@ Patch: 1048_linux-4.1.49.patch
From: http://www.kernel.org
Desc: Linux 4.1.49
+Patch: 1049_linux-4.1.50.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.50
+
+Patch: 1050_linux-4.1.51.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.51
+
+Patch: 1051_linux-4.1.52.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.52
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1049_linux-4.1.50.patch b/1049_linux-4.1.50.patch
new file mode 100644
index 0000000..95262b7
--- /dev/null
+++ b/1049_linux-4.1.50.patch
@@ -0,0 +1,18012 @@
+diff --git a/Documentation/devicetree/bindings/dma/snps-dma.txt b/Documentation/devicetree/bindings/dma/snps-dma.txt
+index c261598164a7..17d43ca27f41 100644
+--- a/Documentation/devicetree/bindings/dma/snps-dma.txt
++++ b/Documentation/devicetree/bindings/dma/snps-dma.txt
+@@ -58,6 +58,6 @@ Example:
+ interrupts = <0 35 0x4>;
+ status = "disabled";
+ dmas = <&dmahost 12 0 1>,
+- <&dmahost 13 0 1 0>;
++ <&dmahost 13 1 0>;
+ dma-names = "rx", "rx";
+ };
+diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
+index 6c0108eb0137..2139ea253142 100644
+--- a/Documentation/filesystems/ext4.txt
++++ b/Documentation/filesystems/ext4.txt
+@@ -233,7 +233,7 @@ data_err=ignore(*) Just print an error message if an error occurs
+ data_err=abort Abort the journal if an error occurs in a file
+ data buffer in ordered mode.
+
+-grpid Give objects the same group ID as their creator.
++grpid New objects have the group ID of their parent.
+ bsdgroups
+
+ nogrpid (*) New objects have the group ID of their creator.
+diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
+index 08dc303d0d47..19e9f2e77bdf 100644
+--- a/Documentation/kernel-parameters.txt
++++ b/Documentation/kernel-parameters.txt
+@@ -2435,6 +2435,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
+
+ nointroute [IA-64]
+
++ noinvpcid [X86] Disable the INVPCID cpu feature.
++
+ nojitter [IA-64] Disables jitter checking for ITC timers.
+
+ no-kvmclock [X86,KVM] Disable paravirtualized KVM clock driver
+@@ -2469,11 +2471,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
+ nopat [X86] Disable PAT (page attribute table extension of
+ pagetables) support.
+
++ nopcid [X86-64] Disable the PCID cpu feature.
++
+ norandmaps Don't use address space randomization. Equivalent to
+ echo 0 > /proc/sys/kernel/randomize_va_space
+
+- noreplace-paravirt [X86,IA-64,PV_OPS] Don't patch paravirt_ops
+-
+ noreplace-smp [X86-32,SMP] Don't replace SMP instructions
+ with UP alternatives
+
+diff --git a/Documentation/speculation.txt b/Documentation/speculation.txt
+new file mode 100644
+index 000000000000..e9e6cbae2841
+--- /dev/null
++++ b/Documentation/speculation.txt
+@@ -0,0 +1,90 @@
++This document explains potential effects of speculation, and how undesirable
++effects can be mitigated portably using common APIs.
++
++===========
++Speculation
++===========
++
++To improve performance and minimize average latencies, many contemporary CPUs
++employ speculative execution techniques such as branch prediction, performing
++work which may be discarded at a later stage.
++
++Typically speculative execution cannot be observed from architectural state,
++such as the contents of registers. However, in some cases it is possible to
++observe its impact on microarchitectural state, such as the presence or
++absence of data in caches. Such state may form side-channels which can be
++observed to extract secret information.
++
++For example, in the presence of branch prediction, it is possible for bounds
++checks to be ignored by code which is speculatively executed. Consider the
++following code:
++
++ int load_array(int *array, unsigned int index)
++ {
++ if (index >= MAX_ARRAY_ELEMS)
++ return 0;
++ else
++ return array[index];
++ }
++
++Which, on arm64, may be compiled to an assembly sequence such as:
++
++ CMP <index>, #MAX_ARRAY_ELEMS
++ B.LT less
++ MOV <returnval>, #0
++ RET
++ less:
++ LDR <returnval>, [<array>, <index>]
++ RET
++
++It is possible that a CPU mis-predicts the conditional branch, and
++speculatively loads array[index], even if index >= MAX_ARRAY_ELEMS. This
++value will subsequently be discarded, but the speculated load may affect
++microarchitectural state which can be subsequently measured.
++
++More complex sequences involving multiple dependent memory accesses may
++result in sensitive information being leaked. Consider the following
++code, building on the prior example:
++
++ int load_dependent_arrays(int *arr1, int *arr2, int index)
++ {
++ int val1, val2,
++
++ val1 = load_array(arr1, index);
++ val2 = load_array(arr2, val1);
++
++ return val2;
++ }
++
++Under speculation, the first call to load_array() may return the value
++of an out-of-bounds address, while the second call will influence
++microarchitectural state dependent on this value. This may provide an
++arbitrary read primitive.
++
++====================================
++Mitigating speculation side-channels
++====================================
++
++The kernel provides a generic API to ensure that bounds checks are
++respected even under speculation. Architectures which are affected by
++speculation-based side-channels are expected to implement these
++primitives.
++
++The array_index_nospec() helper in <linux/nospec.h> can be used to
++prevent information from being leaked via side-channels.
++
++A call to array_index_nospec(index, size) returns a sanitized index
++value that is bounded to [0, size) even under cpu speculation
++conditions.
++
++This can be used to protect the earlier load_array() example:
++
++ int load_array(int *array, unsigned int index)
++ {
++ if (index >= MAX_ARRAY_ELEMS)
++ return 0;
++ else {
++ index = array_index_nospec(index, MAX_ARRAY_ELEMS);
++ return array[index];
++ }
++ }
+diff --git a/Makefile b/Makefile
+index a51938e99e37..a655f63aedeb 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 49
++SUBLEVEL = 50
+ EXTRAVERSION =
+ NAME = Series 4800
+
+@@ -772,6 +772,9 @@ KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
+ # disable invalid "can't wrap" optimizations for signed / pointers
+ KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
+
++# Make sure -fstack-check isn't enabled (like gentoo apparently did)
++KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,)
++
+ # conserve stack if available
+ KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
+
+diff --git a/arch/alpha/include/asm/mmu_context.h b/arch/alpha/include/asm/mmu_context.h
+index 4c51c05333c6..4cafffa80e2c 100644
+--- a/arch/alpha/include/asm/mmu_context.h
++++ b/arch/alpha/include/asm/mmu_context.h
+@@ -7,6 +7,7 @@
+ * Copyright (C) 1996, Linus Torvalds
+ */
+
++#include <linux/sched.h>
+ #include <asm/machvec.h>
+ #include <asm/compiler.h>
+ #include <asm-generic/mm_hooks.h>
+diff --git a/arch/alpha/kernel/pci_impl.h b/arch/alpha/kernel/pci_impl.h
+index 2b0ac429f5eb..412bb3c24f36 100644
+--- a/arch/alpha/kernel/pci_impl.h
++++ b/arch/alpha/kernel/pci_impl.h
+@@ -143,7 +143,8 @@ struct pci_iommu_arena
+ };
+
+ #if defined(CONFIG_ALPHA_SRM) && \
+- (defined(CONFIG_ALPHA_CIA) || defined(CONFIG_ALPHA_LCA))
++ (defined(CONFIG_ALPHA_CIA) || defined(CONFIG_ALPHA_LCA) || \
++ defined(CONFIG_ALPHA_AVANTI))
+ # define NEED_SRM_SAVE_RESTORE
+ #else
+ # undef NEED_SRM_SAVE_RESTORE
+diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
+index 84d13263ce46..8095fb2c5c94 100644
+--- a/arch/alpha/kernel/process.c
++++ b/arch/alpha/kernel/process.c
+@@ -273,12 +273,13 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
+ application calling fork. */
+ if (clone_flags & CLONE_SETTLS)
+ childti->pcb.unique = regs->r20;
++ else
++ regs->r20 = 0; /* OSF/1 has some strange fork() semantics. */
+ childti->pcb.usp = usp ?: rdusp();
+ *childregs = *regs;
+ childregs->r0 = 0;
+ childregs->r19 = 0;
+ childregs->r20 = 1; /* OSF/1 has some strange fork() semantics. */
+- regs->r20 = 0;
+ stack = ((struct switch_stack *) regs) - 1;
+ *childstack = *stack;
+ childstack->r26 = (unsigned long) ret_from_fork;
+diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
+index 156d05efcb70..01288546bda1 100644
+--- a/arch/arm/boot/dts/am335x-evmsk.dts
++++ b/arch/arm/boot/dts/am335x-evmsk.dts
+@@ -646,6 +646,7 @@
+ ti,non-removable;
+ bus-width = <4>;
+ cap-power-off-card;
++ keep-power-in-suspend;
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc2_pins>;
+
+diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
+index c80a3e233792..96222885ad27 100644
+--- a/arch/arm/boot/dts/am4372.dtsi
++++ b/arch/arm/boot/dts/am4372.dtsi
+@@ -750,7 +750,8 @@
+ reg = <0x48038000 0x2000>,
+ <0x46000000 0x400000>;
+ reg-names = "mpu", "dat";
+- interrupts = <80>, <81>;
++ interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>,
++ <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "tx", "rx";
+ status = "disabled";
+ dmas = <&edma 8>,
+@@ -764,7 +765,8 @@
+ reg = <0x4803C000 0x2000>,
+ <0x46400000 0x400000>;
+ reg-names = "mpu", "dat";
+- interrupts = <82>, <83>;
++ interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>,
++ <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "tx", "rx";
+ status = "disabled";
+ dmas = <&edma 10>,
+diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
+index bc04b754fe36..a13618266234 100644
+--- a/arch/arm/boot/dts/dra7.dtsi
++++ b/arch/arm/boot/dts/dra7.dtsi
+@@ -216,6 +216,7 @@
+ device_type = "pci";
+ ranges = <0x81000000 0 0 0x03000 0 0x00010000
+ 0x82000000 0 0x20013000 0x13000 0 0xffed000>;
++ bus-range = <0x00 0xff>;
+ #interrupt-cells = <1>;
+ num-lanes = <1>;
+ ti,hwmods = "pcie1";
+@@ -251,6 +252,7 @@
+ device_type = "pci";
+ ranges = <0x81000000 0 0 0x03000 0 0x00010000
+ 0x82000000 0 0x30013000 0x13000 0 0xffed000>;
++ bus-range = <0x00 0xff>;
+ #interrupt-cells = <1>;
+ num-lanes = <1>;
+ ti,hwmods = "pcie2";
+diff --git a/arch/arm/boot/dts/kirkwood-openblocks_a7.dts b/arch/arm/boot/dts/kirkwood-openblocks_a7.dts
+index d5e3bc518968..d57f48543f76 100644
+--- a/arch/arm/boot/dts/kirkwood-openblocks_a7.dts
++++ b/arch/arm/boot/dts/kirkwood-openblocks_a7.dts
+@@ -53,7 +53,8 @@
+ };
+
+ pinctrl: pin-controller@10000 {
+- pinctrl-0 = <&pmx_dip_switches &pmx_gpio_header>;
++ pinctrl-0 = <&pmx_dip_switches &pmx_gpio_header
++ &pmx_gpio_header_gpo>;
+ pinctrl-names = "default";
+
+ pmx_uart0: pmx-uart0 {
+@@ -85,11 +86,16 @@
+ * ground.
+ */
+ pmx_gpio_header: pmx-gpio-header {
+- marvell,pins = "mpp17", "mpp7", "mpp29", "mpp28",
++ marvell,pins = "mpp17", "mpp29", "mpp28",
+ "mpp35", "mpp34", "mpp40";
+ marvell,function = "gpio";
+ };
+
++ pmx_gpio_header_gpo: pxm-gpio-header-gpo {
++ marvell,pins = "mpp7";
++ marvell,function = "gpo";
++ };
++
+ pmx_gpio_init: pmx-init {
+ marvell,pins = "mpp38";
+ marvell,function = "gpio";
+diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
+index 84be9da74c7e..48c5a3b23d03 100644
+--- a/arch/arm/boot/dts/omap4.dtsi
++++ b/arch/arm/boot/dts/omap4.dtsi
+@@ -841,14 +841,12 @@
+ usbhsohci: ohci@4a064800 {
+ compatible = "ti,ohci-omap3";
+ reg = <0x4a064800 0x400>;
+- interrupt-parent = <&gic>;
+ interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ usbhsehci: ehci@4a064c00 {
+ compatible = "ti,ehci-omap";
+ reg = <0x4a064c00 0x400>;
+- interrupt-parent = <&gic>;
+ interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+diff --git a/arch/arm/boot/dts/s5pv210.dtsi b/arch/arm/boot/dts/s5pv210.dtsi
+index 8344a0ee2b86..b03fe747b98c 100644
+--- a/arch/arm/boot/dts/s5pv210.dtsi
++++ b/arch/arm/boot/dts/s5pv210.dtsi
+@@ -461,6 +461,7 @@
+ compatible = "samsung,exynos4210-ohci";
+ reg = <0xec300000 0x100>;
+ interrupts = <23>;
++ interrupt-parent = <&vic1>;
+ clocks = <&clocks CLK_USB_HOST>;
+ clock-names = "usbhost";
+ #address-cells = <1>;
+diff --git a/arch/arm/boot/dts/spear1310-evb.dts b/arch/arm/boot/dts/spear1310-evb.dts
+index d42c84b1df8d..9cff28d476be 100644
+--- a/arch/arm/boot/dts/spear1310-evb.dts
++++ b/arch/arm/boot/dts/spear1310-evb.dts
+@@ -349,7 +349,7 @@
+ spi0: spi@e0100000 {
+ status = "okay";
+ num-cs = <3>;
+- cs-gpios = <&gpio1 7 0>, <&spics 0>, <&spics 1>;
++ cs-gpios = <&gpio1 7 0>, <&spics 0 0>, <&spics 1 0>;
+
+ stmpe610@0 {
+ compatible = "st,stmpe610";
+diff --git a/arch/arm/boot/dts/spear1340.dtsi b/arch/arm/boot/dts/spear1340.dtsi
+index 13e1aa33daa2..69bc407b4a5a 100644
+--- a/arch/arm/boot/dts/spear1340.dtsi
++++ b/arch/arm/boot/dts/spear1340.dtsi
+@@ -141,8 +141,8 @@
+ reg = <0xb4100000 0x1000>;
+ interrupts = <0 105 0x4>;
+ status = "disabled";
+- dmas = <&dwdma0 0x600 0 0 1>, /* 0xC << 11 */
+- <&dwdma0 0x680 0 1 0>; /* 0xD << 7 */
++ dmas = <&dwdma0 12 0 1>,
++ <&dwdma0 13 1 0>;
+ dma-names = "tx", "rx";
+ };
+
+diff --git a/arch/arm/boot/dts/spear13xx.dtsi b/arch/arm/boot/dts/spear13xx.dtsi
+index 40accc87e3a2..4e5a2770eac8 100644
+--- a/arch/arm/boot/dts/spear13xx.dtsi
++++ b/arch/arm/boot/dts/spear13xx.dtsi
+@@ -100,7 +100,7 @@
+ reg = <0xb2800000 0x1000>;
+ interrupts = <0 29 0x4>;
+ status = "disabled";
+- dmas = <&dwdma0 0 0 0 0>;
++ dmas = <&dwdma0 0 0 0>;
+ dma-names = "data";
+ };
+
+@@ -288,8 +288,8 @@
+ #size-cells = <0>;
+ interrupts = <0 31 0x4>;
+ status = "disabled";
+- dmas = <&dwdma0 0x2000 0 0 0>, /* 0x4 << 11 */
+- <&dwdma0 0x0280 0 0 0>; /* 0x5 << 7 */
++ dmas = <&dwdma0 4 0 0>,
++ <&dwdma0 5 0 0>;
+ dma-names = "tx", "rx";
+ };
+
+diff --git a/arch/arm/boot/dts/spear600.dtsi b/arch/arm/boot/dts/spear600.dtsi
+index 9f60a7b6a42b..bd379034993c 100644
+--- a/arch/arm/boot/dts/spear600.dtsi
++++ b/arch/arm/boot/dts/spear600.dtsi
+@@ -194,6 +194,7 @@
+ rtc@fc900000 {
+ compatible = "st,spear600-rtc";
+ reg = <0xfc900000 0x1000>;
++ interrupt-parent = <&vic0>;
+ interrupts = <10>;
+ status = "disabled";
+ };
+diff --git a/arch/arm/include/asm/kvm_arm.h b/arch/arm/include/asm/kvm_arm.h
+index aacd6668d1a0..d43122f0993d 100644
+--- a/arch/arm/include/asm/kvm_arm.h
++++ b/arch/arm/include/asm/kvm_arm.h
+@@ -161,8 +161,7 @@
+ #else
+ #define VTTBR_X (5 - KVM_T0SZ)
+ #endif
+-#define VTTBR_BADDR_SHIFT (VTTBR_X - 1)
+-#define VTTBR_BADDR_MASK (((1LLU << (40 - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT)
++#define VTTBR_BADDR_MASK (((1LLU << (40 - VTTBR_X)) - 1) << VTTBR_X)
+ #define VTTBR_VMID_SHIFT (48LLU)
+ #define VTTBR_VMID_MASK (0xffLLU << VTTBR_VMID_SHIFT)
+
+diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h
+index 9b32f76bb0dd..10f662498eb7 100644
+--- a/arch/arm/include/asm/mmu_context.h
++++ b/arch/arm/include/asm/mmu_context.h
+@@ -61,6 +61,7 @@ static inline void check_and_switch_context(struct mm_struct *mm,
+ cpu_switch_mm(mm->pgd, mm);
+ }
+
++#ifndef MODULE
+ #define finish_arch_post_lock_switch \
+ finish_arch_post_lock_switch
+ static inline void finish_arch_post_lock_switch(void)
+@@ -82,6 +83,7 @@ static inline void finish_arch_post_lock_switch(void)
+ preempt_enable_no_resched();
+ }
+ }
++#endif /* !MODULE */
+
+ #endif /* CONFIG_MMU */
+
+diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c
+index f36b5b1acd1f..05b2f8294968 100644
+--- a/arch/arm/kvm/handle_exit.c
++++ b/arch/arm/kvm/handle_exit.c
+@@ -45,7 +45,7 @@ static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run)
+
+ ret = kvm_psci_call(vcpu);
+ if (ret < 0) {
+- kvm_inject_undefined(vcpu);
++ vcpu_set_reg(vcpu, 0, ~0UL);
+ return 1;
+ }
+
+@@ -54,7 +54,16 @@ static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run)
+
+ static int handle_smc(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ {
+- kvm_inject_undefined(vcpu);
++ /*
++ * "If an SMC instruction executed at Non-secure EL1 is
++ * trapped to EL2 because HCR_EL2.TSC is 1, the exception is a
++ * Trap exception, not a Secure Monitor Call exception [...]"
++ *
++ * We need to advance the PC after the trap, as it would
++ * otherwise return to the same address...
++ */
++ vcpu_set_reg(vcpu, 0, ~0UL);
++ kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
+ return 1;
+ }
+
+diff --git a/arch/arm/kvm/mmio.c b/arch/arm/kvm/mmio.c
+index 974b1c606d04..04e5004b34e1 100644
+--- a/arch/arm/kvm/mmio.c
++++ b/arch/arm/kvm/mmio.c
+@@ -113,7 +113,7 @@ int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ }
+
+ trace_kvm_mmio(KVM_TRACE_MMIO_READ, len, run->mmio.phys_addr,
+- data);
++ &data);
+ data = vcpu_data_host_to_guest(vcpu, data, len);
+ *vcpu_reg(vcpu, vcpu->arch.mmio_decode.rt) = data;
+ }
+@@ -188,14 +188,14 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
+ if (is_write) {
+ data = vcpu_data_guest_to_host(vcpu, *vcpu_reg(vcpu, rt), len);
+
+- trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, len, fault_ipa, data);
++ trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, len, fault_ipa, &data);
+ mmio_write_buf(data_buf, len, data);
+
+ ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, fault_ipa, len,
+ data_buf);
+ } else {
+ trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, len,
+- fault_ipa, 0);
++ fault_ipa, NULL);
+
+ ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, fault_ipa, len,
+ data_buf);
+diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
+index 5ac122e88f67..9ff92050053c 100644
+--- a/arch/arm/mach-omap2/omap-secure.c
++++ b/arch/arm/mach-omap2/omap-secure.c
+@@ -73,6 +73,25 @@ phys_addr_t omap_secure_ram_mempool_base(void)
+ return omap_secure_memblock_base;
+ }
+
++u32 omap3_save_secure_ram(void __iomem *addr, int size)
++{
++ u32 ret;
++ u32 param[5];
++
++ if (size != OMAP3_SAVE_SECURE_RAM_SZ)
++ return OMAP3_SAVE_SECURE_RAM_SZ;
++
++ param[0] = 4; /* Number of arguments */
++ param[1] = __pa(addr); /* Physical address for saving */
++ param[2] = 0;
++ param[3] = 1;
++ param[4] = 1;
++
++ ret = save_secure_ram_context(__pa(param));
++
++ return ret;
++}
++
+ /**
+ * rx51_secure_dispatcher: Routine to dispatch secure PPA API calls
+ * @idx: The PPA API index
+diff --git a/arch/arm/mach-omap2/omap-secure.h b/arch/arm/mach-omap2/omap-secure.h
+index af2851fbcdf0..ab6ce2597a88 100644
+--- a/arch/arm/mach-omap2/omap-secure.h
++++ b/arch/arm/mach-omap2/omap-secure.h
+@@ -31,6 +31,8 @@
+ /* Maximum Secure memory storage size */
+ #define OMAP_SECURE_RAM_STORAGE (88 * SZ_1K)
+
++#define OMAP3_SAVE_SECURE_RAM_SZ 0x803F
++
+ /* Secure low power HAL API index */
+ #define OMAP4_HAL_SAVESECURERAM_INDEX 0x1a
+ #define OMAP4_HAL_SAVEHW_INDEX 0x1b
+@@ -64,6 +66,8 @@ extern u32 omap_smc2(u32 id, u32 falg, u32 pargs);
+ extern u32 omap_smc3(u32 id, u32 process, u32 flag, u32 pargs);
+ extern phys_addr_t omap_secure_ram_mempool_base(void);
+ extern int omap_secure_ram_reserve_memblock(void);
++extern u32 save_secure_ram_context(u32 args_pa);
++extern u32 omap3_save_secure_ram(void __iomem *save_regs, int size);
+
+ extern u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs,
+ u32 arg1, u32 arg2, u32 arg3, u32 arg4);
+diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
+index 425bfcd67db6..326218953737 100644
+--- a/arch/arm/mach-omap2/pm.h
++++ b/arch/arm/mach-omap2/pm.h
+@@ -81,10 +81,6 @@ extern unsigned int omap3_do_wfi_sz;
+ /* ... and its pointer from SRAM after copy */
+ extern void (*omap3_do_wfi_sram)(void);
+
+-/* save_secure_ram_context function pointer and size, for copy to SRAM */
+-extern int save_secure_ram_context(u32 *addr);
+-extern unsigned int save_secure_ram_context_sz;
+-
+ extern void omap3_save_scratchpad_contents(void);
+
+ #define PM_RTA_ERRATUM_i608 (1 << 0)
+diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
+index 87b98bf92366..0b8ab6c00071 100644
+--- a/arch/arm/mach-omap2/pm34xx.c
++++ b/arch/arm/mach-omap2/pm34xx.c
+@@ -48,6 +48,7 @@
+ #include "prm3xxx.h"
+ #include "pm.h"
+ #include "sdrc.h"
++#include "omap-secure.h"
+ #include "sram.h"
+ #include "control.h"
+ #include "vc.h"
+@@ -66,7 +67,6 @@ struct power_state {
+
+ static LIST_HEAD(pwrst_list);
+
+-static int (*_omap_save_secure_sram)(u32 *addr);
+ void (*omap3_do_wfi_sram)(void);
+
+ static struct powerdomain *mpu_pwrdm, *neon_pwrdm;
+@@ -121,8 +121,8 @@ static void omap3_save_secure_ram_context(void)
+ * will hang the system.
+ */
+ pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON);
+- ret = _omap_save_secure_sram((u32 *)(unsigned long)
+- __pa(omap3_secure_ram_storage));
++ ret = omap3_save_secure_ram(omap3_secure_ram_storage,
++ OMAP3_SAVE_SECURE_RAM_SZ);
+ pwrdm_set_next_pwrst(mpu_pwrdm, mpu_next_state);
+ /* Following is for error tracking, it should not happen */
+ if (ret) {
+@@ -431,15 +431,10 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
+ *
+ * The minimum set of functions is pushed to SRAM for execution:
+ * - omap3_do_wfi for erratum i581 WA,
+- * - save_secure_ram_context for security extensions.
+ */
+ void omap_push_sram_idle(void)
+ {
+ omap3_do_wfi_sram = omap_sram_push(omap3_do_wfi, omap3_do_wfi_sz);
+-
+- if (omap_type() != OMAP2_DEVICE_TYPE_GP)
+- _omap_save_secure_sram = omap_sram_push(save_secure_ram_context,
+- save_secure_ram_context_sz);
+ }
+
+ static void __init pm_errata_configure(void)
+@@ -551,7 +546,7 @@ int __init omap3_pm_init(void)
+ clkdm_add_wkdep(neon_clkdm, mpu_clkdm);
+ if (omap_type() != OMAP2_DEVICE_TYPE_GP) {
+ omap3_secure_ram_storage =
+- kmalloc(0x803F, GFP_KERNEL);
++ kmalloc(OMAP3_SAVE_SECURE_RAM_SZ, GFP_KERNEL);
+ if (!omap3_secure_ram_storage)
+ pr_err("Memory allocation failed when allocating for secure sram context\n");
+
+diff --git a/arch/arm/mach-omap2/prm33xx.c b/arch/arm/mach-omap2/prm33xx.c
+index dcb5001d77da..973bcd754e1c 100644
+--- a/arch/arm/mach-omap2/prm33xx.c
++++ b/arch/arm/mach-omap2/prm33xx.c
+@@ -176,17 +176,6 @@ static int am33xx_pwrdm_read_pwrst(struct powerdomain *pwrdm)
+ return v;
+ }
+
+-static int am33xx_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+-{
+- u32 v;
+-
+- v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs);
+- v &= AM33XX_LASTPOWERSTATEENTERED_MASK;
+- v >>= AM33XX_LASTPOWERSTATEENTERED_SHIFT;
+-
+- return v;
+-}
+-
+ static int am33xx_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
+ {
+ am33xx_prm_rmw_reg_bits(AM33XX_LOWPOWERSTATECHANGE_MASK,
+@@ -357,7 +346,6 @@ struct pwrdm_ops am33xx_pwrdm_operations = {
+ .pwrdm_set_next_pwrst = am33xx_pwrdm_set_next_pwrst,
+ .pwrdm_read_next_pwrst = am33xx_pwrdm_read_next_pwrst,
+ .pwrdm_read_pwrst = am33xx_pwrdm_read_pwrst,
+- .pwrdm_read_prev_pwrst = am33xx_pwrdm_read_prev_pwrst,
+ .pwrdm_set_logic_retst = am33xx_pwrdm_set_logic_retst,
+ .pwrdm_read_logic_pwrst = am33xx_pwrdm_read_logic_pwrst,
+ .pwrdm_read_logic_retst = am33xx_pwrdm_read_logic_retst,
+diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
+index 1b9f0520dea9..3e0d802c59da 100644
+--- a/arch/arm/mach-omap2/sleep34xx.S
++++ b/arch/arm/mach-omap2/sleep34xx.S
+@@ -93,20 +93,13 @@ ENTRY(enable_omap3630_toggle_l2_on_restore)
+ ENDPROC(enable_omap3630_toggle_l2_on_restore)
+
+ /*
+- * Function to call rom code to save secure ram context. This gets
+- * relocated to SRAM, so it can be all in .data section. Otherwise
+- * we need to initialize api_params separately.
++ * Function to call rom code to save secure ram context.
++ *
++ * r0 = physical address of the parameters
+ */
+- .data
+- .align 3
+ ENTRY(save_secure_ram_context)
+ stmfd sp!, {r4 - r11, lr} @ save registers on stack
+- adr r3, api_params @ r3 points to parameters
+- str r0, [r3,#0x4] @ r0 has sdram address
+- ldr r12, high_mask
+- and r3, r3, r12
+- ldr r12, sram_phy_addr_mask
+- orr r3, r3, r12
++ mov r3, r0 @ physical address of parameters
+ mov r0, #25 @ set service ID for PPA
+ mov r12, r0 @ copy secure service ID in r12
+ mov r1, #0 @ set task id for ROM code in r1
+@@ -120,18 +113,7 @@ ENTRY(save_secure_ram_context)
+ nop
+ nop
+ ldmfd sp!, {r4 - r11, pc}
+- .align
+-sram_phy_addr_mask:
+- .word SRAM_BASE_P
+-high_mask:
+- .word 0xffff
+-api_params:
+- .word 0x4, 0x0, 0x0, 0x1, 0x1
+ ENDPROC(save_secure_ram_context)
+-ENTRY(save_secure_ram_context_sz)
+- .word . - save_secure_ram_context
+-
+- .text
+
+ /*
+ * ======================
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+index 64d7486262e5..e37c04facc1d 100644
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -764,13 +764,31 @@ static void arm_coherent_dma_free(struct device *dev, size_t size, void *cpu_add
+ __arm_dma_free(dev, size, cpu_addr, handle, attrs, true);
+ }
+
++/*
++ * The whole dma_get_sgtable() idea is fundamentally unsafe - it seems
++ * that the intention is to allow exporting memory allocated via the
++ * coherent DMA APIs through the dma_buf API, which only accepts a
++ * scattertable. This presents a couple of problems:
++ * 1. Not all memory allocated via the coherent DMA APIs is backed by
++ * a struct page
++ * 2. Passing coherent DMA memory into the streaming APIs is not allowed
++ * as we will try to flush the memory through a different alias to that
++ * actually being used (and the flushes are redundant.)
++ */
+ int arm_dma_get_sgtable(struct device *dev, struct sg_table *sgt,
+ void *cpu_addr, dma_addr_t handle, size_t size,
+ struct dma_attrs *attrs)
+ {
+- struct page *page = pfn_to_page(dma_to_pfn(dev, handle));
++ unsigned long pfn = dma_to_pfn(dev, handle);
++ struct page *page;
+ int ret;
+
++ /* If the PFN is not valid, we do not have a struct page */
++ if (!pfn_valid(pfn))
++ return -ENXIO;
++
++ page = pfn_to_page(pfn);
++
+ ret = sg_alloc_table(sgt, 1, GFP_KERNEL);
+ if (unlikely(ret))
+ return ret;
+diff --git a/arch/arm/probes/kprobes/core.c b/arch/arm/probes/kprobes/core.c
+index a4ec240ee7ba..3eb018fa1a1f 100644
+--- a/arch/arm/probes/kprobes/core.c
++++ b/arch/arm/probes/kprobes/core.c
+@@ -433,6 +433,7 @@ static __used __kprobes void *trampoline_handler(struct pt_regs *regs)
+ struct hlist_node *tmp;
+ unsigned long flags, orig_ret_address = 0;
+ unsigned long trampoline_address = (unsigned long)&kretprobe_trampoline;
++ kprobe_opcode_t *correct_ret_addr = NULL;
+
+ INIT_HLIST_HEAD(&empty_rp);
+ kretprobe_hash_lock(current, &head, &flags);
+@@ -455,14 +456,34 @@ static __used __kprobes void *trampoline_handler(struct pt_regs *regs)
+ /* another task is sharing our hash bucket */
+ continue;
+
++ orig_ret_address = (unsigned long)ri->ret_addr;
++
++ if (orig_ret_address != trampoline_address)
++ /*
++ * This is the real return address. Any other
++ * instances associated with this task are for
++ * other calls deeper on the call stack
++ */
++ break;
++ }
++
++ kretprobe_assert(ri, orig_ret_address, trampoline_address);
++
++ correct_ret_addr = ri->ret_addr;
++ hlist_for_each_entry_safe(ri, tmp, head, hlist) {
++ if (ri->task != current)
++ /* another task is sharing our hash bucket */
++ continue;
++
++ orig_ret_address = (unsigned long)ri->ret_addr;
+ if (ri->rp && ri->rp->handler) {
+ __this_cpu_write(current_kprobe, &ri->rp->kp);
+ get_kprobe_ctlblk()->kprobe_status = KPROBE_HIT_ACTIVE;
++ ri->ret_addr = correct_ret_addr;
+ ri->rp->handler(ri, regs);
+ __this_cpu_write(current_kprobe, NULL);
+ }
+
+- orig_ret_address = (unsigned long)ri->ret_addr;
+ recycle_rp_inst(ri, &empty_rp);
+
+ if (orig_ret_address != trampoline_address)
+@@ -474,7 +495,6 @@ static __used __kprobes void *trampoline_handler(struct pt_regs *regs)
+ break;
+ }
+
+- kretprobe_assert(ri, orig_ret_address, trampoline_address);
+ kretprobe_hash_unlock(current, &flags);
+
+ hlist_for_each_entry_safe(ri, tmp, &empty_rp, hlist) {
+diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c
+index 9775de22e2ff..a48354de1aa1 100644
+--- a/arch/arm/probes/kprobes/test-core.c
++++ b/arch/arm/probes/kprobes/test-core.c
+@@ -976,7 +976,10 @@ static void coverage_end(void)
+ void __naked __kprobes_test_case_start(void)
+ {
+ __asm__ __volatile__ (
+- "stmdb sp!, {r4-r11} \n\t"
++ "mov r2, sp \n\t"
++ "bic r3, r2, #7 \n\t"
++ "mov sp, r3 \n\t"
++ "stmdb sp!, {r2-r11} \n\t"
+ "sub sp, sp, #"__stringify(TEST_MEMORY_SIZE)"\n\t"
+ "bic r0, lr, #1 @ r0 = inline data \n\t"
+ "mov r1, sp \n\t"
+@@ -996,7 +999,8 @@ void __naked __kprobes_test_case_end_32(void)
+ "movne pc, r0 \n\t"
+ "mov r0, r4 \n\t"
+ "add sp, sp, #"__stringify(TEST_MEMORY_SIZE)"\n\t"
+- "ldmia sp!, {r4-r11} \n\t"
++ "ldmia sp!, {r2-r11} \n\t"
++ "mov sp, r2 \n\t"
+ "mov pc, r0 \n\t"
+ );
+ }
+@@ -1012,7 +1016,8 @@ void __naked __kprobes_test_case_end_16(void)
+ "bxne r0 \n\t"
+ "mov r0, r4 \n\t"
+ "add sp, sp, #"__stringify(TEST_MEMORY_SIZE)"\n\t"
+- "ldmia sp!, {r4-r11} \n\t"
++ "ldmia sp!, {r2-r11} \n\t"
++ "mov sp, r2 \n\t"
+ "bx r0 \n\t"
+ );
+ }
+diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
+index 8bbd57efae78..9322be69ca09 100644
+--- a/arch/arm64/kernel/traps.c
++++ b/arch/arm64/kernel/traps.c
+@@ -46,7 +46,7 @@ static const char *handler[]= {
+ "Error"
+ };
+
+-int show_unhandled_signals = 1;
++int show_unhandled_signals = 0;
+
+ /*
+ * Dump out the contents of some memory nicely...
+diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c
+index 524fa25671fc..2d357aed5e66 100644
+--- a/arch/arm64/kvm/handle_exit.c
++++ b/arch/arm64/kvm/handle_exit.c
+@@ -42,7 +42,7 @@ static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run)
+
+ ret = kvm_psci_call(vcpu);
+ if (ret < 0) {
+- kvm_inject_undefined(vcpu);
++ vcpu_set_reg(vcpu, 0, ~0UL);
+ return 1;
+ }
+
+@@ -51,7 +51,7 @@ static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run)
+
+ static int handle_smc(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ {
+- kvm_inject_undefined(vcpu);
++ vcpu_set_reg(vcpu, 0, ~0UL);
+ return 1;
+ }
+
+diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
+index ae8f940152aa..b8ed781807ef 100644
+--- a/arch/arm64/mm/init.c
++++ b/arch/arm64/mm/init.c
+@@ -177,6 +177,7 @@ void __init arm64_memblock_init(void)
+ arm64_dma_phys_limit = max_zone_dma_phys();
+ else
+ arm64_dma_phys_limit = PHYS_MASK + 1;
++ high_memory = __va(memblock_end_of_DRAM() - 1) + 1;
+ dma_contiguous_reserve(arm64_dma_phys_limit);
+
+ memblock_allow_resize();
+@@ -201,7 +202,6 @@ void __init bootmem_init(void)
+ sparse_init();
+ zone_sizes_init(min, max);
+
+- high_memory = __va((max << PAGE_SHIFT) - 1) + 1;
+ max_pfn = max_low_pfn = max;
+ }
+
+diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c
+index 5afbb7b41160..d60986fdc288 100644
+--- a/arch/mips/ar7/platform.c
++++ b/arch/mips/ar7/platform.c
+@@ -577,7 +577,7 @@ static int __init ar7_register_uarts(void)
+ uart_port.type = PORT_AR7;
+ uart_port.uartclk = clk_get_rate(bus_clk) / 2;
+ uart_port.iotype = UPIO_MEM32;
+- uart_port.flags = UPF_FIXED_TYPE;
++ uart_port.flags = UPF_FIXED_TYPE | UPF_BOOT_AUTOCONF;
+ uart_port.regshift = 2;
+
+ uart_port.line = 0;
+diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
+index ded8b8ba34fd..18cb5eb10e55 100644
+--- a/arch/mips/kernel/process.c
++++ b/arch/mips/kernel/process.c
+@@ -631,6 +631,18 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
+ unsigned long switch_count;
+ struct task_struct *t;
+
++ /* If nothing to change, return right away, successfully. */
++ if (value == mips_get_process_fp_mode(task))
++ return 0;
++
++ /* Only accept a mode change if 64-bit FP enabled for o32. */
++ if (!IS_ENABLED(CONFIG_MIPS_O32_FP64_SUPPORT))
++ return -EOPNOTSUPP;
++
++ /* And only for o32 tasks. */
++ if (IS_ENABLED(CONFIG_64BIT) && !test_thread_flag(TIF_32BIT_REGS))
++ return -EOPNOTSUPP;
++
+ /* Check the value is valid */
+ if (value & ~known_bits)
+ return -EOPNOTSUPP;
+diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
+index 2bea5db01b0b..938d7576f455 100644
+--- a/arch/mips/kernel/ptrace.c
++++ b/arch/mips/kernel/ptrace.c
+@@ -438,63 +438,160 @@ static int gpr64_set(struct task_struct *target,
+
+ #endif /* CONFIG_64BIT */
+
++/*
++ * Copy the floating-point context to the supplied NT_PRFPREG buffer,
++ * !CONFIG_CPU_HAS_MSA variant. FP context's general register slots
++ * correspond 1:1 to buffer slots. Only general registers are copied.
++ */
++static int fpr_get_fpa(struct task_struct *target,
++ unsigned int *pos, unsigned int *count,
++ void **kbuf, void __user **ubuf)
++{
++ return user_regset_copyout(pos, count, kbuf, ubuf,
++ &target->thread.fpu,
++ 0, NUM_FPU_REGS * sizeof(elf_fpreg_t));
++}
++
++/*
++ * Copy the floating-point context to the supplied NT_PRFPREG buffer,
++ * CONFIG_CPU_HAS_MSA variant. Only lower 64 bits of FP context's
++ * general register slots are copied to buffer slots. Only general
++ * registers are copied.
++ */
++static int fpr_get_msa(struct task_struct *target,
++ unsigned int *pos, unsigned int *count,
++ void **kbuf, void __user **ubuf)
++{
++ unsigned int i;
++ u64 fpr_val;
++ int err;
++
++ BUILD_BUG_ON(sizeof(fpr_val) != sizeof(elf_fpreg_t));
++ for (i = 0; i < NUM_FPU_REGS; i++) {
++ fpr_val = get_fpr64(&target->thread.fpu.fpr[i], 0);
++ err = user_regset_copyout(pos, count, kbuf, ubuf,
++ &fpr_val, i * sizeof(elf_fpreg_t),
++ (i + 1) * sizeof(elf_fpreg_t));
++ if (err)
++ return err;
++ }
++
++ return 0;
++}
++
++/*
++ * Copy the floating-point context to the supplied NT_PRFPREG buffer.
++ * Choose the appropriate helper for general registers, and then copy
++ * the FCSR register separately.
++ */
+ static int fpr_get(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ void *kbuf, void __user *ubuf)
+ {
+- unsigned i;
++ const int fcr31_pos = NUM_FPU_REGS * sizeof(elf_fpreg_t);
+ int err;
+- u64 fpr_val;
+
+- /* XXX fcr31 */
++ if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t))
++ err = fpr_get_fpa(target, &pos, &count, &kbuf, &ubuf);
++ else
++ err = fpr_get_msa(target, &pos, &count, &kbuf, &ubuf);
++ if (err)
++ return err;
+
+- if (sizeof(target->thread.fpu.fpr[i]) == sizeof(elf_fpreg_t))
+- return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+- &target->thread.fpu,
+- 0, sizeof(elf_fpregset_t));
++ err = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
++ &target->thread.fpu.fcr31,
++ fcr31_pos, fcr31_pos + sizeof(u32));
+
+- for (i = 0; i < NUM_FPU_REGS; i++) {
+- fpr_val = get_fpr64(&target->thread.fpu.fpr[i], 0);
+- err = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+- &fpr_val, i * sizeof(elf_fpreg_t),
+- (i + 1) * sizeof(elf_fpreg_t));
++ return err;
++}
++
++/*
++ * Copy the supplied NT_PRFPREG buffer to the floating-point context,
++ * !CONFIG_CPU_HAS_MSA variant. Buffer slots correspond 1:1 to FP
++ * context's general register slots. Only general registers are copied.
++ */
++static int fpr_set_fpa(struct task_struct *target,
++ unsigned int *pos, unsigned int *count,
++ const void **kbuf, const void __user **ubuf)
++{
++ return user_regset_copyin(pos, count, kbuf, ubuf,
++ &target->thread.fpu,
++ 0, NUM_FPU_REGS * sizeof(elf_fpreg_t));
++}
++
++/*
++ * Copy the supplied NT_PRFPREG buffer to the floating-point context,
++ * CONFIG_CPU_HAS_MSA variant. Buffer slots are copied to lower 64
++ * bits only of FP context's general register slots. Only general
++ * registers are copied.
++ */
++static int fpr_set_msa(struct task_struct *target,
++ unsigned int *pos, unsigned int *count,
++ const void **kbuf, const void __user **ubuf)
++{
++ unsigned int i;
++ u64 fpr_val;
++ int err;
++
++ BUILD_BUG_ON(sizeof(fpr_val) != sizeof(elf_fpreg_t));
++ for (i = 0; i < NUM_FPU_REGS && *count > 0; i++) {
++ err = user_regset_copyin(pos, count, kbuf, ubuf,
++ &fpr_val, i * sizeof(elf_fpreg_t),
++ (i + 1) * sizeof(elf_fpreg_t));
+ if (err)
+ return err;
++ set_fpr64(&target->thread.fpu.fpr[i], 0, fpr_val);
+ }
+
+ return 0;
+ }
+
++/*
++ * Copy the supplied NT_PRFPREG buffer to the floating-point context.
++ * Choose the appropriate helper for general registers, and then copy
++ * the FCSR register separately.
++ *
++ * We optimize for the case where `count % sizeof(elf_fpreg_t) == 0',
++ * which is supposed to have been guaranteed by the kernel before
++ * calling us, e.g. in `ptrace_regset'. We enforce that requirement,
++ * so that we can safely avoid preinitializing temporaries for
++ * partial register writes.
++ */
+ static int fpr_set(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ const void *kbuf, const void __user *ubuf)
+ {
+- unsigned i;
++ const int fcr31_pos = NUM_FPU_REGS * sizeof(elf_fpreg_t);
++ u32 fcr31;
+ int err;
+- u64 fpr_val;
+
+- /* XXX fcr31 */
++ BUG_ON(count % sizeof(elf_fpreg_t));
++
++ if (pos + count > sizeof(elf_fpregset_t))
++ return -EIO;
+
+ init_fp_ctx(target);
+
+- if (sizeof(target->thread.fpu.fpr[i]) == sizeof(elf_fpreg_t))
+- return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+- &target->thread.fpu,
+- 0, sizeof(elf_fpregset_t));
++ if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t))
++ err = fpr_set_fpa(target, &pos, &count, &kbuf, &ubuf);
++ else
++ err = fpr_set_msa(target, &pos, &count, &kbuf, &ubuf);
++ if (err)
++ return err;
+
+- BUILD_BUG_ON(sizeof(fpr_val) != sizeof(elf_fpreg_t));
+- for (i = 0; i < NUM_FPU_REGS && count >= sizeof(elf_fpreg_t); i++) {
++ if (count > 0) {
+ err = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+- &fpr_val, i * sizeof(elf_fpreg_t),
+- (i + 1) * sizeof(elf_fpreg_t));
++ &fcr31,
++ fcr31_pos, fcr31_pos + sizeof(u32));
+ if (err)
+ return err;
+- set_fpr64(&target->thread.fpu.fpr[i], 0, fpr_val);
++
++ ptrace_setfcr31(target, fcr31);
+ }
+
+- return 0;
++ return err;
+ }
+
+ enum mips_regset {
+diff --git a/arch/mn10300/mm/misalignment.c b/arch/mn10300/mm/misalignment.c
+index b9920b1edd5a..70cef54dc40f 100644
+--- a/arch/mn10300/mm/misalignment.c
++++ b/arch/mn10300/mm/misalignment.c
+@@ -437,7 +437,7 @@ transfer_failed:
+
+ info.si_signo = SIGSEGV;
+ info.si_errno = 0;
+- info.si_code = 0;
++ info.si_code = SEGV_MAPERR;
+ info.si_addr = (void *) regs->pc;
+ force_sig_info(SIGSEGV, &info, current);
+ return;
+diff --git a/arch/openrisc/kernel/traps.c b/arch/openrisc/kernel/traps.c
+index 3d3f6062f49c..605a284922fb 100644
+--- a/arch/openrisc/kernel/traps.c
++++ b/arch/openrisc/kernel/traps.c
+@@ -302,12 +302,12 @@ asmlinkage void do_unaligned_access(struct pt_regs *regs, unsigned long address)
+ siginfo_t info;
+
+ if (user_mode(regs)) {
+- /* Send a SIGSEGV */
+- info.si_signo = SIGSEGV;
++ /* Send a SIGBUS */
++ info.si_signo = SIGBUS;
+ info.si_errno = 0;
+- /* info.si_code has been set above */
+- info.si_addr = (void *)address;
+- force_sig_info(SIGSEGV, &info, current);
++ info.si_code = BUS_ADRALN;
++ info.si_addr = (void __user *)address;
++ force_sig_info(SIGBUS, &info, current);
+ } else {
+ printk("KERNEL: Unaligned Access 0x%.8lx\n", address);
+ show_registers(regs);
+diff --git a/arch/parisc/include/asm/ldcw.h b/arch/parisc/include/asm/ldcw.h
+index 8121aa6db2ff..51bb6b8eade6 100644
+--- a/arch/parisc/include/asm/ldcw.h
++++ b/arch/parisc/include/asm/ldcw.h
+@@ -11,6 +11,7 @@
+ for the semaphore. */
+
+ #define __PA_LDCW_ALIGNMENT 16
++#define __PA_LDCW_ALIGN_ORDER 4
+ #define __ldcw_align(a) ({ \
+ unsigned long __ret = (unsigned long) &(a)->lock[0]; \
+ __ret = (__ret + __PA_LDCW_ALIGNMENT - 1) \
+@@ -28,6 +29,7 @@
+ ldcd). */
+
+ #define __PA_LDCW_ALIGNMENT 4
++#define __PA_LDCW_ALIGN_ORDER 2
+ #define __ldcw_align(a) (&(a)->slock)
+ #define __LDCW "ldcw,co"
+
+diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
+index c5ef4081b01d..b523fa90a727 100644
+--- a/arch/parisc/kernel/entry.S
++++ b/arch/parisc/kernel/entry.S
+@@ -35,6 +35,7 @@
+ #include <asm/pgtable.h>
+ #include <asm/signal.h>
+ #include <asm/unistd.h>
++#include <asm/ldcw.h>
+ #include <asm/thread_info.h>
+
+ #include <linux/linkage.h>
+@@ -46,6 +47,14 @@
+ #endif
+
+ .import pa_tlb_lock,data
++ .macro load_pa_tlb_lock reg
++#if __PA_LDCW_ALIGNMENT > 4
++ load32 PA(pa_tlb_lock) + __PA_LDCW_ALIGNMENT-1, \reg
++ depi 0,31,__PA_LDCW_ALIGN_ORDER, \reg
++#else
++ load32 PA(pa_tlb_lock), \reg
++#endif
++ .endm
+
+ /* space_to_prot macro creates a prot id from a space id */
+
+@@ -457,7 +466,7 @@
+ .macro tlb_lock spc,ptp,pte,tmp,tmp1,fault
+ #ifdef CONFIG_SMP
+ cmpib,COND(=),n 0,\spc,2f
+- load32 PA(pa_tlb_lock),\tmp
++ load_pa_tlb_lock \tmp
+ 1: LDCW 0(\tmp),\tmp1
+ cmpib,COND(=) 0,\tmp1,1b
+ nop
+@@ -480,7 +489,7 @@
+ /* Release pa_tlb_lock lock. */
+ .macro tlb_unlock1 spc,tmp
+ #ifdef CONFIG_SMP
+- load32 PA(pa_tlb_lock),\tmp
++ load_pa_tlb_lock \tmp
+ tlb_unlock0 \spc,\tmp
+ #endif
+ .endm
+diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
+index b743a80eaba0..ddc2f0cf1c73 100644
+--- a/arch/parisc/kernel/pacache.S
++++ b/arch/parisc/kernel/pacache.S
+@@ -36,6 +36,7 @@
+ #include <asm/assembly.h>
+ #include <asm/pgtable.h>
+ #include <asm/cache.h>
++#include <asm/ldcw.h>
+ #include <linux/linkage.h>
+
+ .text
+@@ -333,8 +334,12 @@ ENDPROC(flush_data_cache_local)
+
+ .macro tlb_lock la,flags,tmp
+ #ifdef CONFIG_SMP
+- ldil L%pa_tlb_lock,%r1
+- ldo R%pa_tlb_lock(%r1),\la
++#if __PA_LDCW_ALIGNMENT > 4
++ load32 pa_tlb_lock + __PA_LDCW_ALIGNMENT-1, \la
++ depi 0,31,__PA_LDCW_ALIGN_ORDER, \la
++#else
++ load32 pa_tlb_lock, \la
++#endif
+ rsm PSW_SM_I,\flags
+ 1: LDCW 0(\la),\tmp
+ cmpib,<>,n 0,\tmp,3f
+diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
+index 4b8c928a9873..a55a246fc784 100644
+--- a/arch/powerpc/Kconfig
++++ b/arch/powerpc/Kconfig
+@@ -126,13 +126,14 @@ config PPC
+ select IRQ_FORCED_THREADING
+ select HAVE_RCU_TABLE_FREE if SMP
+ select HAVE_SYSCALL_TRACEPOINTS
+- select HAVE_BPF_JIT
++ select HAVE_BPF_JIT if CPU_BIG_ENDIAN
+ select HAVE_ARCH_JUMP_LABEL
+ select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select ARCH_HAS_GCOV_PROFILE_ALL
+ select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_CMOS_UPDATE
+ select GENERIC_TIME_VSYSCALL_OLD
++ select GENERIC_CPU_VULNERABILITIES if PPC_BOOK3S_64
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_CLOCKEVENTS_BROADCAST if SMP
+ select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+diff --git a/arch/powerpc/include/asm/exception-64e.h b/arch/powerpc/include/asm/exception-64e.h
+index a8b52b61043f..bd8958445336 100644
+--- a/arch/powerpc/include/asm/exception-64e.h
++++ b/arch/powerpc/include/asm/exception-64e.h
+@@ -208,5 +208,11 @@ exc_##label##_book3e:
+ ori r3,r3,interrupt_base_book3e@l; \
+ mtspr SPRN_IVOR##vector_number,r3;
+
++#define RFI_TO_KERNEL \
++ rfi
++
++#define RFI_TO_USER \
++ rfi
++
+ #endif /* _ASM_POWERPC_EXCEPTION_64E_H */
+
+diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
+index 77f52b26dad6..9bddbec441b8 100644
+--- a/arch/powerpc/include/asm/exception-64s.h
++++ b/arch/powerpc/include/asm/exception-64s.h
+@@ -50,6 +50,59 @@
+ #define EX_PPR 88 /* SMT thread status register (priority) */
+ #define EX_CTR 96
+
++/*
++ * Macros for annotating the expected destination of (h)rfid
++ *
++ * The nop instructions allow us to insert one or more instructions to flush the
++ * L1-D cache when returning to userspace or a guest.
++ */
++#define RFI_FLUSH_SLOT \
++ RFI_FLUSH_FIXUP_SECTION; \
++ nop; \
++ nop; \
++ nop
++
++#define RFI_TO_KERNEL \
++ rfid
++
++#define RFI_TO_USER \
++ RFI_FLUSH_SLOT; \
++ rfid; \
++ b rfi_flush_fallback
++
++#define RFI_TO_USER_OR_KERNEL \
++ RFI_FLUSH_SLOT; \
++ rfid; \
++ b rfi_flush_fallback
++
++#define RFI_TO_GUEST \
++ RFI_FLUSH_SLOT; \
++ rfid; \
++ b rfi_flush_fallback
++
++#define HRFI_TO_KERNEL \
++ hrfid
++
++#define HRFI_TO_USER \
++ RFI_FLUSH_SLOT; \
++ hrfid; \
++ b hrfi_flush_fallback
++
++#define HRFI_TO_USER_OR_KERNEL \
++ RFI_FLUSH_SLOT; \
++ hrfid; \
++ b hrfi_flush_fallback
++
++#define HRFI_TO_GUEST \
++ RFI_FLUSH_SLOT; \
++ hrfid; \
++ b hrfi_flush_fallback
++
++#define HRFI_TO_UNKNOWN \
++ RFI_FLUSH_SLOT; \
++ hrfid; \
++ b hrfi_flush_fallback
++
+ #ifdef CONFIG_RELOCATABLE
+ #define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \
+ ld r12,PACAKBASE(r13); /* get high part of &label */ \
+@@ -191,7 +244,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
+ mtspr SPRN_##h##SRR0,r12; \
+ mfspr r12,SPRN_##h##SRR1; /* and SRR1 */ \
+ mtspr SPRN_##h##SRR1,r10; \
+- h##rfid; \
++ h##RFI_TO_KERNEL; \
+ b . /* prevent speculative execution */
+ #define EXCEPTION_PROLOG_PSERIES_1(label, h) \
+ __EXCEPTION_PROLOG_PSERIES_1(label, h)
+diff --git a/arch/powerpc/include/asm/feature-fixups.h b/arch/powerpc/include/asm/feature-fixups.h
+index 9a67a38bf7b9..7068bafbb2d6 100644
+--- a/arch/powerpc/include/asm/feature-fixups.h
++++ b/arch/powerpc/include/asm/feature-fixups.h
+@@ -184,4 +184,19 @@ label##3: \
+ FTR_ENTRY_OFFSET label##1b-label##3b; \
+ .popsection;
+
++#define RFI_FLUSH_FIXUP_SECTION \
++951: \
++ .pushsection __rfi_flush_fixup,"a"; \
++ .align 2; \
++952: \
++ FTR_ENTRY_OFFSET 951b-952b; \
++ .popsection;
++
++
++#ifndef __ASSEMBLY__
++
++extern long __start___rfi_flush_fixup, __stop___rfi_flush_fixup;
++
++#endif
++
+ #endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */
+diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
+index 85bc8c0d257b..449bbb87c257 100644
+--- a/arch/powerpc/include/asm/hvcall.h
++++ b/arch/powerpc/include/asm/hvcall.h
+@@ -239,6 +239,7 @@
+ #define H_GET_HCA_INFO 0x1B8
+ #define H_GET_PERF_COUNT 0x1BC
+ #define H_MANAGE_TRACE 0x1C0
++#define H_GET_CPU_CHARACTERISTICS 0x1C8
+ #define H_FREE_LOGICAL_LAN_BUFFER 0x1D4
+ #define H_QUERY_INT_STATE 0x1E4
+ #define H_POLL_PENDING 0x1D8
+@@ -285,7 +286,19 @@
+ #define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE 3
+ #define H_SET_MODE_RESOURCE_LE 4
+
++/* H_GET_CPU_CHARACTERISTICS return values */
++#define H_CPU_CHAR_SPEC_BAR_ORI31 (1ull << 63) // IBM bit 0
++#define H_CPU_CHAR_BCCTRL_SERIALISED (1ull << 62) // IBM bit 1
++#define H_CPU_CHAR_L1D_FLUSH_ORI30 (1ull << 61) // IBM bit 2
++#define H_CPU_CHAR_L1D_FLUSH_TRIG2 (1ull << 60) // IBM bit 3
++#define H_CPU_CHAR_L1D_THREAD_PRIV (1ull << 59) // IBM bit 4
++
++#define H_CPU_BEHAV_FAVOUR_SECURITY (1ull << 63) // IBM bit 0
++#define H_CPU_BEHAV_L1D_FLUSH_PR (1ull << 62) // IBM bit 1
++#define H_CPU_BEHAV_BNDS_CHK_SPEC_BAR (1ull << 61) // IBM bit 2
++
+ #ifndef __ASSEMBLY__
++#include <linux/types.h>
+
+ /**
+ * plpar_hcall_norets: - Make a pseries hypervisor call with no return arguments
+@@ -423,6 +436,11 @@ extern long pseries_big_endian_exceptions(void);
+
+ #endif /* CONFIG_PPC_PSERIES */
+
++struct h_cpu_char_result {
++ u64 character;
++ u64 behaviour;
++};
++
+ #endif /* __ASSEMBLY__ */
+ #endif /* __KERNEL__ */
+ #endif /* _ASM_POWERPC_HVCALL_H */
+diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
+index 70bd4381f8e6..08e5df3395fa 100644
+--- a/arch/powerpc/include/asm/paca.h
++++ b/arch/powerpc/include/asm/paca.h
+@@ -192,6 +192,15 @@ struct paca_struct {
+ #endif
+ struct kvmppc_host_state kvm_hstate;
+ #endif
++#ifdef CONFIG_PPC_BOOK3S_64
++ /*
++ * rfi fallback flush must be in its own cacheline to prevent
++ * other paca data leaking into the L1d
++ */
++ u64 exrfi[13] __aligned(0x80);
++ void *rfi_flush_fallback_area;
++ u64 l1d_flush_size;
++#endif
+ };
+
+ extern struct paca_struct *paca;
+diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h
+index 67859edbf8fd..6e05cb397a5c 100644
+--- a/arch/powerpc/include/asm/plpar_wrappers.h
++++ b/arch/powerpc/include/asm/plpar_wrappers.h
+@@ -323,4 +323,18 @@ static inline long plapr_set_watchpoint0(unsigned long dawr0, unsigned long dawr
+ return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR, dawr0, dawrx0);
+ }
+
++static inline long plpar_get_cpu_characteristics(struct h_cpu_char_result *p)
++{
++ unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
++ long rc;
++
++ rc = plpar_hcall(H_GET_CPU_CHARACTERISTICS, retbuf);
++ if (rc == H_SUCCESS) {
++ p->character = retbuf[0];
++ p->behaviour = retbuf[1];
++ }
++
++ return rc;
++}
++
+ #endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */
+diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
+index dd0fc18d8103..160bb2311bbb 100644
+--- a/arch/powerpc/include/asm/ppc_asm.h
++++ b/arch/powerpc/include/asm/ppc_asm.h
+@@ -224,6 +224,16 @@ name: \
+ .globl name; \
+ name:
+
++#define _KPROBE_TOC(name) \
++ .section ".kprobes.text","a"; \
++ .align 2 ; \
++ .type name,@function; \
++ .globl name; \
++name: \
++0: addis r2,r12,(.TOC.-0b)@ha; \
++ addi r2,r2,(.TOC.-0b)@l; \
++ .localentry name,.-name
++
+ #define DOTSYM(a) a
+
+ #else
+@@ -261,6 +271,8 @@ name: \
+ .type GLUE(.,name),@function; \
+ GLUE(.,name):
+
++#define _KPROBE_TOC(n) _KPROBE(n)
++
+ #define DOTSYM(a) GLUE(.,a)
+
+ #endif
+diff --git a/arch/powerpc/include/asm/setup.h b/arch/powerpc/include/asm/setup.h
+index e9d384cbd021..7916b56f2e60 100644
+--- a/arch/powerpc/include/asm/setup.h
++++ b/arch/powerpc/include/asm/setup.h
+@@ -26,6 +26,19 @@ void initmem_init(void);
+ void setup_panic(void);
+ #define ARCH_PANIC_TIMEOUT 180
+
++void rfi_flush_enable(bool enable);
++
++/* These are bit flags */
++enum l1d_flush_type {
++ L1D_FLUSH_NONE = 0x1,
++ L1D_FLUSH_FALLBACK = 0x2,
++ L1D_FLUSH_ORI = 0x4,
++ L1D_FLUSH_MTTRIG = 0x8,
++};
++
++void __init setup_rfi_flush(enum l1d_flush_type, bool enable);
++void do_rfi_flush_fixups(enum l1d_flush_type types);
++
+ #endif /* !__ASSEMBLY__ */
+
+ #endif /* _ASM_POWERPC_SETUP_H */
+diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
+index d8d332e65078..23fe603a98d3 100644
+--- a/arch/powerpc/kernel/asm-offsets.c
++++ b/arch/powerpc/kernel/asm-offsets.c
+@@ -244,6 +244,9 @@ int main(void)
+ #ifdef CONFIG_PPC_BOOK3S_64
+ DEFINE(PACAMCEMERGSP, offsetof(struct paca_struct, mc_emergency_sp));
+ DEFINE(PACA_IN_MCE, offsetof(struct paca_struct, in_mce));
++ DEFINE(PACA_RFI_FLUSH_FALLBACK_AREA, offsetof(struct paca_struct, rfi_flush_fallback_area));
++ DEFINE(PACA_EXRFI, offsetof(struct paca_struct, exrfi));
++ DEFINE(PACA_L1D_FLUSH_SIZE, offsetof(struct paca_struct, l1d_flush_size));
+ #endif
+ DEFINE(PACAHWCPUID, offsetof(struct paca_struct, hw_cpu_id));
+ DEFINE(PACAKEXECSTATE, offsetof(struct paca_struct, kexec_state));
+diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
+index de276553cc79..36a8bf3d053b 100644
+--- a/arch/powerpc/kernel/entry_64.S
++++ b/arch/powerpc/kernel/entry_64.S
+@@ -34,6 +34,11 @@
+ #include <asm/ftrace.h>
+ #include <asm/hw_irq.h>
+ #include <asm/context_tracking.h>
++#ifdef CONFIG_PPC_BOOK3S
++#include <asm/exception-64s.h>
++#else
++#include <asm/exception-64e.h>
++#endif
+
+ /*
+ * System calls.
+@@ -218,13 +223,23 @@ END_FTR_SECTION_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS)
+ ACCOUNT_CPU_USER_EXIT(r11, r12)
+ HMT_MEDIUM_LOW_HAS_PPR
+ ld r13,GPR13(r1) /* only restore r13 if returning to usermode */
++ ld r2,GPR2(r1)
++ ld r1,GPR1(r1)
++ mtlr r4
++ mtcr r5
++ mtspr SPRN_SRR0,r7
++ mtspr SPRN_SRR1,r8
++ RFI_TO_USER
++ b . /* prevent speculative execution */
++
++ /* exit to kernel */
+ 1: ld r2,GPR2(r1)
+ ld r1,GPR1(r1)
+ mtlr r4
+ mtcr r5
+ mtspr SPRN_SRR0,r7
+ mtspr SPRN_SRR1,r8
+- RFI
++ RFI_TO_KERNEL
+ b . /* prevent speculative execution */
+
+ syscall_error:
+@@ -840,7 +855,7 @@ BEGIN_FTR_SECTION
+ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
+ ACCOUNT_CPU_USER_EXIT(r2, r4)
+ REST_GPR(13, r1)
+-1:
++
+ mtspr SPRN_SRR1,r3
+
+ ld r2,_CCR(r1)
+@@ -853,8 +868,22 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
+ ld r3,GPR3(r1)
+ ld r4,GPR4(r1)
+ ld r1,GPR1(r1)
++ RFI_TO_USER
++ b . /* prevent speculative execution */
++
++1: mtspr SPRN_SRR1,r3
++
++ ld r2,_CCR(r1)
++ mtcrf 0xFF,r2
++ ld r2,_NIP(r1)
++ mtspr SPRN_SRR0,r2
+
+- rfid
++ ld r0,GPR0(r1)
++ ld r2,GPR2(r1)
++ ld r3,GPR3(r1)
++ ld r4,GPR4(r1)
++ ld r1,GPR1(r1)
++ RFI_TO_KERNEL
+ b . /* prevent speculative execution */
+
+ #endif /* CONFIG_PPC_BOOK3E */
+@@ -1030,7 +1059,7 @@ _GLOBAL(enter_rtas)
+
+ mtspr SPRN_SRR0,r5
+ mtspr SPRN_SRR1,r6
+- rfid
++ RFI_TO_KERNEL
+ b . /* prevent speculative execution */
+
+ rtas_return_loc:
+@@ -1055,7 +1084,7 @@ rtas_return_loc:
+
+ mtspr SPRN_SRR0,r3
+ mtspr SPRN_SRR1,r4
+- rfid
++ RFI_TO_KERNEL
+ b . /* prevent speculative execution */
+
+ .align 3
+@@ -1126,7 +1155,7 @@ _GLOBAL(enter_prom)
+ LOAD_REG_IMMEDIATE(r12, MSR_SF | MSR_ISF | MSR_LE)
+ andc r11,r11,r12
+ mtsrr1 r11
+- rfid
++ RFI_TO_KERNEL
+ #endif /* CONFIG_PPC_BOOK3E */
+
+ 1: /* Return from OF */
+diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
+index 7662bfae0493..3b8991df5101 100644
+--- a/arch/powerpc/kernel/exceptions-64s.S
++++ b/arch/powerpc/kernel/exceptions-64s.S
+@@ -46,7 +46,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) \
+ mtspr SPRN_SRR0,r10 ; \
+ ld r10,PACAKMSR(r13) ; \
+ mtspr SPRN_SRR1,r10 ; \
+- rfid ; \
++ RFI_TO_KERNEL ; \
+ b . ; /* prevent speculative execution */
+
+ #define SYSCALL_PSERIES_3 \
+@@ -54,7 +54,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) \
+ 1: mfspr r12,SPRN_SRR1 ; \
+ xori r12,r12,MSR_LE ; \
+ mtspr SPRN_SRR1,r12 ; \
+- rfid ; /* return to userspace */ \
++ RFI_TO_USER ; /* return to userspace */ \
+ b . ; /* prevent speculative execution */
+
+ #if defined(CONFIG_RELOCATABLE)
+@@ -508,7 +508,7 @@ BEGIN_FTR_SECTION
+ LOAD_HANDLER(r12, machine_check_handle_early)
+ 1: mtspr SPRN_SRR0,r12
+ mtspr SPRN_SRR1,r11
+- rfid
++ RFI_TO_KERNEL
+ b . /* prevent speculative execution */
+ 2:
+ /* Stack overflow. Stay on emergency stack and panic.
+@@ -602,7 +602,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR)
+ ld r11,PACA_EXGEN+EX_R11(r13)
+ ld r12,PACA_EXGEN+EX_R12(r13)
+ ld r13,PACA_EXGEN+EX_R13(r13)
+- HRFID
++ HRFI_TO_UNKNOWN
+ b .
+ #endif
+
+@@ -667,7 +667,7 @@ masked_##_H##interrupt: \
+ ld r10,PACA_EXGEN+EX_R10(r13); \
+ ld r11,PACA_EXGEN+EX_R11(r13); \
+ GET_SCRATCH0(r13); \
+- ##_H##rfid; \
++ ##_H##RFI_TO_KERNEL; \
+ b .
+
+ MASKED_INTERRUPT()
+@@ -757,7 +757,7 @@ kvmppc_skip_interrupt:
+ addi r13, r13, 4
+ mtspr SPRN_SRR0, r13
+ GET_SCRATCH0(r13)
+- rfid
++ RFI_TO_KERNEL
+ b .
+
+ kvmppc_skip_Hinterrupt:
+@@ -769,7 +769,7 @@ kvmppc_skip_Hinterrupt:
+ addi r13, r13, 4
+ mtspr SPRN_HSRR0, r13
+ GET_SCRATCH0(r13)
+- hrfid
++ HRFI_TO_KERNEL
+ b .
+ #endif
+
+@@ -1447,7 +1447,7 @@ machine_check_handle_early:
+ li r3,MSR_ME
+ andc r10,r10,r3 /* Turn off MSR_ME */
+ mtspr SPRN_SRR1,r10
+- rfid
++ RFI_TO_KERNEL
+ b .
+ 2:
+ /*
+@@ -1465,7 +1465,7 @@ machine_check_handle_early:
+ */
+ bl machine_check_queue_event
+ MACHINE_CHECK_HANDLER_WINDUP
+- rfid
++ RFI_TO_USER_OR_KERNEL
+ 9:
+ /* Deliver the machine check to host kernel in V mode. */
+ MACHINE_CHECK_HANDLER_WINDUP
+@@ -1511,6 +1511,8 @@ slb_miss_realmode:
+
+ andi. r10,r12,MSR_RI /* check for unrecoverable exception */
+ beq- 2f
++ andi. r10,r12,MSR_PR /* check for user mode (PR != 0) */
++ bne 1f
+
+ .machine push
+ .machine "power4"
+@@ -1524,7 +1526,23 @@ slb_miss_realmode:
+ ld r11,PACA_EXSLB+EX_R11(r13)
+ ld r12,PACA_EXSLB+EX_R12(r13)
+ ld r13,PACA_EXSLB+EX_R13(r13)
+- rfid
++ RFI_TO_KERNEL
++ b . /* prevent speculative execution */
++
++1:
++.machine push
++.machine "power4"
++ mtcrf 0x80,r9
++ mtcrf 0x01,r9 /* slb_allocate uses cr0 and cr7 */
++.machine pop
++
++ RESTORE_PPR_PACA(PACA_EXSLB, r9)
++ ld r9,PACA_EXSLB+EX_R9(r13)
++ ld r10,PACA_EXSLB+EX_R10(r13)
++ ld r11,PACA_EXSLB+EX_R11(r13)
++ ld r12,PACA_EXSLB+EX_R12(r13)
++ ld r13,PACA_EXSLB+EX_R13(r13)
++ RFI_TO_USER
+ b . /* prevent speculative execution */
+
+ 2: mfspr r11,SPRN_SRR0
+@@ -1533,7 +1551,7 @@ slb_miss_realmode:
+ mtspr SPRN_SRR0,r10
+ ld r10,PACAKMSR(r13)
+ mtspr SPRN_SRR1,r10
+- rfid
++ RFI_TO_KERNEL
+ b .
+
+ unrecov_slb:
+@@ -1554,6 +1572,88 @@ power4_fixup_nap:
+ blr
+ #endif
+
++ .globl rfi_flush_fallback
++rfi_flush_fallback:
++ SET_SCRATCH0(r13);
++ GET_PACA(r13);
++ std r9,PACA_EXRFI+EX_R9(r13)
++ std r10,PACA_EXRFI+EX_R10(r13)
++ std r11,PACA_EXRFI+EX_R11(r13)
++ mfctr r9
++ ld r10,PACA_RFI_FLUSH_FALLBACK_AREA(r13)
++ ld r11,PACA_L1D_FLUSH_SIZE(r13)
++ srdi r11,r11,(7 + 3) /* 128 byte lines, unrolled 8x */
++ mtctr r11
++ DCBT_STOP_ALL_STREAM_IDS(r11) /* Stop prefetch streams */
++
++ /* order ld/st prior to dcbt stop all streams with flushing */
++ sync
++
++ /*
++ * The load adresses are at staggered offsets within cachelines,
++ * which suits some pipelines better (on others it should not
++ * hurt).
++ */
++1:
++ ld r11,(0x80 + 8)*0(r10)
++ ld r11,(0x80 + 8)*1(r10)
++ ld r11,(0x80 + 8)*2(r10)
++ ld r11,(0x80 + 8)*3(r10)
++ ld r11,(0x80 + 8)*4(r10)
++ ld r11,(0x80 + 8)*5(r10)
++ ld r11,(0x80 + 8)*6(r10)
++ ld r11,(0x80 + 8)*7(r10)
++ addi r10,r10,0x80*8
++ bdnz 1b
++
++ mtctr r9
++ ld r9,PACA_EXRFI+EX_R9(r13)
++ ld r10,PACA_EXRFI+EX_R10(r13)
++ ld r11,PACA_EXRFI+EX_R11(r13)
++ GET_SCRATCH0(r13);
++ rfid
++
++ .globl hrfi_flush_fallback
++hrfi_flush_fallback:
++ SET_SCRATCH0(r13);
++ GET_PACA(r13);
++ std r9,PACA_EXRFI+EX_R9(r13)
++ std r10,PACA_EXRFI+EX_R10(r13)
++ std r11,PACA_EXRFI+EX_R11(r13)
++ mfctr r9
++ ld r10,PACA_RFI_FLUSH_FALLBACK_AREA(r13)
++ ld r11,PACA_L1D_FLUSH_SIZE(r13)
++ srdi r11,r11,(7 + 3) /* 128 byte lines, unrolled 8x */
++ mtctr r11
++ DCBT_STOP_ALL_STREAM_IDS(r11) /* Stop prefetch streams */
++
++ /* order ld/st prior to dcbt stop all streams with flushing */
++ sync
++
++ /*
++ * The load adresses are at staggered offsets within cachelines,
++ * which suits some pipelines better (on others it should not
++ * hurt).
++ */
++1:
++ ld r11,(0x80 + 8)*0(r10)
++ ld r11,(0x80 + 8)*1(r10)
++ ld r11,(0x80 + 8)*2(r10)
++ ld r11,(0x80 + 8)*3(r10)
++ ld r11,(0x80 + 8)*4(r10)
++ ld r11,(0x80 + 8)*5(r10)
++ ld r11,(0x80 + 8)*6(r10)
++ ld r11,(0x80 + 8)*7(r10)
++ addi r10,r10,0x80*8
++ bdnz 1b
++
++ mtctr r9
++ ld r9,PACA_EXRFI+EX_R9(r13)
++ ld r10,PACA_EXRFI+EX_R10(r13)
++ ld r11,PACA_EXRFI+EX_R11(r13)
++ GET_SCRATCH0(r13);
++ hrfid
++
+ /*
+ * Hash table stuff
+ */
+diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
+index 4e314b90c75d..1f979d5617a2 100644
+--- a/arch/powerpc/kernel/misc_64.S
++++ b/arch/powerpc/kernel/misc_64.S
+@@ -65,7 +65,7 @@ PPC64_CACHES:
+ * flush all bytes from start through stop-1 inclusive
+ */
+
+-_KPROBE(flush_icache_range)
++_KPROBE_TOC(flush_icache_range)
+ BEGIN_FTR_SECTION
+ PURGE_PREFETCHED_INS
+ blr
+@@ -116,7 +116,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
+ *
+ * flush all bytes from start to stop-1 inclusive
+ */
+-_GLOBAL(flush_dcache_range)
++_GLOBAL_TOC(flush_dcache_range)
+
+ /*
+ * Flush the data cache to memory
+@@ -634,31 +634,3 @@ _GLOBAL(kexec_sequence)
+ li r5,0
+ blr /* image->start(physid, image->start, 0); */
+ #endif /* CONFIG_KEXEC */
+-
+-#ifdef CONFIG_MODULES
+-#if defined(_CALL_ELF) && _CALL_ELF == 2
+-
+-#ifdef CONFIG_MODVERSIONS
+-.weak __crc_TOC.
+-.section "___kcrctab+TOC.","a"
+-.globl __kcrctab_TOC.
+-__kcrctab_TOC.:
+- .llong __crc_TOC.
+-#endif
+-
+-/*
+- * Export a fake .TOC. since both modpost and depmod will complain otherwise.
+- * Both modpost and depmod strip the leading . so we do the same here.
+- */
+-.section "__ksymtab_strings","a"
+-__kstrtab_TOC.:
+- .asciz "TOC."
+-
+-.section "___ksymtab+TOC.","a"
+-/* This symbol name is important: it's used by modpost to find exported syms */
+-.globl __ksymtab_TOC.
+-__ksymtab_TOC.:
+- .llong 0 /* .value */
+- .llong __kstrtab_TOC.
+-#endif /* ELFv2 */
+-#endif /* MODULES */
+diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
+index e4f7d4eed20c..08b7a40de5f8 100644
+--- a/arch/powerpc/kernel/module_64.c
++++ b/arch/powerpc/kernel/module_64.c
+@@ -326,7 +326,10 @@ static void dedotify_versions(struct modversion_info *vers,
+ }
+ }
+
+-/* Undefined symbols which refer to .funcname, hack to funcname (or .TOC.) */
++/*
++ * Undefined symbols which refer to .funcname, hack to funcname. Make .TOC.
++ * seem to be defined (value set later).
++ */
+ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
+ {
+ unsigned int i;
+@@ -334,8 +337,11 @@ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
+ for (i = 1; i < numsyms; i++) {
+ if (syms[i].st_shndx == SHN_UNDEF) {
+ char *name = strtab + syms[i].st_name;
+- if (name[0] == '.')
++ if (name[0] == '.') {
++ if (strcmp(name+1, "TOC.") == 0)
++ syms[i].st_shndx = SHN_ABS;
+ syms[i].st_name++;
++ }
+ }
+ }
+ }
+@@ -351,7 +357,7 @@ static Elf64_Sym *find_dot_toc(Elf64_Shdr *sechdrs,
+ numsyms = sechdrs[symindex].sh_size / sizeof(Elf64_Sym);
+
+ for (i = 1; i < numsyms; i++) {
+- if (syms[i].st_shndx == SHN_UNDEF
++ if (syms[i].st_shndx == SHN_ABS
+ && strcmp(strtab + syms[i].st_name, "TOC.") == 0)
+ return &syms[i];
+ }
+diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
+index dd023904bac5..9579f9c13315 100644
+--- a/arch/powerpc/kernel/process.c
++++ b/arch/powerpc/kernel/process.c
+@@ -209,7 +209,8 @@ void enable_kernel_vsx(void)
+ WARN_ON(preemptible());
+
+ #ifdef CONFIG_SMP
+- if (current->thread.regs && (current->thread.regs->msr & MSR_VSX))
++ if (current->thread.regs &&
++ (current->thread.regs->msr & (MSR_VSX|MSR_VEC|MSR_FP)))
+ giveup_vsx(current);
+ else
+ giveup_vsx(NULL); /* just enable vsx for kernel - force */
+@@ -231,7 +232,7 @@ void flush_vsx_to_thread(struct task_struct *tsk)
+ {
+ if (tsk->thread.regs) {
+ preempt_disable();
+- if (tsk->thread.regs->msr & MSR_VSX) {
++ if (tsk->thread.regs->msr & (MSR_VSX|MSR_VEC|MSR_FP)) {
+ #ifdef CONFIG_SMP
+ BUG_ON(tsk != current);
+ #endif
+diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
+index f21897b42057..93f200f14e19 100644
+--- a/arch/powerpc/kernel/ptrace.c
++++ b/arch/powerpc/kernel/ptrace.c
+@@ -376,7 +376,7 @@ static int fpr_get(struct task_struct *target, const struct user_regset *regset,
+
+ #else
+ BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) !=
+- offsetof(struct thread_fp_state, fpr[32][0]));
++ offsetof(struct thread_fp_state, fpr[32]));
+
+ return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+ &target->thread.fp_state, 0, -1);
+@@ -404,7 +404,7 @@ static int fpr_set(struct task_struct *target, const struct user_regset *regset,
+ return 0;
+ #else
+ BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) !=
+- offsetof(struct thread_fp_state, fpr[32][0]));
++ offsetof(struct thread_fp_state, fpr[32]));
+
+ return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &target->thread.fp_state, 0, -1);
+diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
+index 8161d66830a2..c6ebe398def1 100644
+--- a/arch/powerpc/kernel/setup_64.c
++++ b/arch/powerpc/kernel/setup_64.c
+@@ -38,6 +38,7 @@
+ #include <linux/hugetlb.h>
+ #include <linux/memory.h>
+ #include <linux/nmi.h>
++#include <linux/debugfs.h>
+
+ #include <asm/io.h>
+ #include <asm/kdump.h>
+@@ -807,4 +808,131 @@ static int __init disable_hardlockup_detector(void)
+ return 0;
+ }
+ early_initcall(disable_hardlockup_detector);
++
++#ifdef CONFIG_PPC_BOOK3S_64
++static enum l1d_flush_type enabled_flush_types;
++static void *l1d_flush_fallback_area;
++static bool no_rfi_flush;
++bool rfi_flush;
++
++static int __init handle_no_rfi_flush(char *p)
++{
++ pr_info("rfi-flush: disabled on command line.");
++ no_rfi_flush = true;
++ return 0;
++}
++early_param("no_rfi_flush", handle_no_rfi_flush);
++
++/*
++ * The RFI flush is not KPTI, but because users will see doco that says to use
++ * nopti we hijack that option here to also disable the RFI flush.
++ */
++static int __init handle_no_pti(char *p)
++{
++ pr_info("rfi-flush: disabling due to 'nopti' on command line.\n");
++ handle_no_rfi_flush(NULL);
++ return 0;
++}
++early_param("nopti", handle_no_pti);
++
++static void do_nothing(void *unused)
++{
++ /*
++ * We don't need to do the flush explicitly, just enter+exit kernel is
++ * sufficient, the RFI exit handlers will do the right thing.
++ */
++}
++
++void rfi_flush_enable(bool enable)
++{
++ if (rfi_flush == enable)
++ return;
++
++ if (enable) {
++ do_rfi_flush_fixups(enabled_flush_types);
++ on_each_cpu(do_nothing, NULL, 1);
++ } else
++ do_rfi_flush_fixups(L1D_FLUSH_NONE);
++
++ rfi_flush = enable;
++}
++
++static void init_fallback_flush(void)
++{
++ u64 l1d_size, limit;
++ int cpu;
++
++ l1d_size = ppc64_caches.dsize;
++ limit = min(safe_stack_limit(), ppc64_rma_size);
++
++ /*
++ * Align to L1d size, and size it at 2x L1d size, to catch possible
++ * hardware prefetch runoff. We don't have a recipe for load patterns to
++ * reliably avoid the prefetcher.
++ */
++ l1d_flush_fallback_area = __va(memblock_alloc_base(l1d_size * 2, l1d_size, limit));
++ memset(l1d_flush_fallback_area, 0, l1d_size * 2);
++
++ for_each_possible_cpu(cpu) {
++ paca[cpu].rfi_flush_fallback_area = l1d_flush_fallback_area;
++ paca[cpu].l1d_flush_size = l1d_size;
++ }
++}
++
++void __init setup_rfi_flush(enum l1d_flush_type types, bool enable)
++{
++ if (types & L1D_FLUSH_FALLBACK) {
++ pr_info("rfi-flush: Using fallback displacement flush\n");
++ init_fallback_flush();
++ }
++
++ if (types & L1D_FLUSH_ORI)
++ pr_info("rfi-flush: Using ori type flush\n");
++
++ if (types & L1D_FLUSH_MTTRIG)
++ pr_info("rfi-flush: Using mttrig type flush\n");
++
++ enabled_flush_types = types;
++
++ if (!no_rfi_flush)
++ rfi_flush_enable(enable);
++}
++
++#ifdef CONFIG_DEBUG_FS
++static int rfi_flush_set(void *data, u64 val)
++{
++ if (val == 1)
++ rfi_flush_enable(true);
++ else if (val == 0)
++ rfi_flush_enable(false);
++ else
++ return -EINVAL;
++
++ return 0;
++}
++
++static int rfi_flush_get(void *data, u64 *val)
++{
++ *val = rfi_flush ? 1 : 0;
++ return 0;
++}
++
++DEFINE_SIMPLE_ATTRIBUTE(fops_rfi_flush, rfi_flush_get, rfi_flush_set, "%llu\n");
++
++static __init int rfi_flush_debugfs_init(void)
++{
++ debugfs_create_file("rfi_flush", 0600, powerpc_debugfs_root, NULL, &fops_rfi_flush);
++ return 0;
++}
++device_initcall(rfi_flush_debugfs_init);
++#endif
++
++ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, char *buf)
++{
++ if (rfi_flush)
++ return sprintf(buf, "Mitigation: RFI Flush\n");
++
++ return sprintf(buf, "Vulnerable\n");
++}
++#endif /* CONFIG_PPC_BOOK3S_64 */
+ #endif
+diff --git a/arch/powerpc/kernel/vdso64/datapage.S b/arch/powerpc/kernel/vdso64/datapage.S
+index 79796de11737..3263ee23170d 100644
+--- a/arch/powerpc/kernel/vdso64/datapage.S
++++ b/arch/powerpc/kernel/vdso64/datapage.S
+@@ -57,7 +57,7 @@ V_FUNCTION_BEGIN(__kernel_get_syscall_map)
+ bl V_LOCAL_FUNC(__get_datapage)
+ mtlr r12
+ addi r3,r3,CFG_SYSCALL_MAP64
+- cmpli cr0,r4,0
++ cmpldi cr0,r4,0
+ crclr cr0*4+so
+ beqlr
+ li r0,__NR_syscalls
+diff --git a/arch/powerpc/kernel/vdso64/gettimeofday.S b/arch/powerpc/kernel/vdso64/gettimeofday.S
+index a76b4af37ef2..382021324883 100644
+--- a/arch/powerpc/kernel/vdso64/gettimeofday.S
++++ b/arch/powerpc/kernel/vdso64/gettimeofday.S
+@@ -145,7 +145,7 @@ V_FUNCTION_BEGIN(__kernel_clock_getres)
+ bne cr0,99f
+
+ li r3,0
+- cmpli cr0,r4,0
++ cmpldi cr0,r4,0
+ crclr cr0*4+so
+ beqlr
+ lis r5,CLOCK_REALTIME_RES@h
+diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
+index 1db685104ffc..b542a80477c8 100644
+--- a/arch/powerpc/kernel/vmlinux.lds.S
++++ b/arch/powerpc/kernel/vmlinux.lds.S
+@@ -72,6 +72,15 @@ SECTIONS
+ /* Read-only data */
+ RODATA
+
++#ifdef CONFIG_PPC64
++ . = ALIGN(8);
++ __rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
++ __start___rfi_flush_fixup = .;
++ *(__rfi_flush_fixup)
++ __stop___rfi_flush_fixup = .;
++ }
++#endif
++
+ EXCEPTION_TABLE(0)
+
+ NOTES :kernel :notes
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index a3018f109cd3..a7bd4100f158 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -64,7 +64,7 @@ _GLOBAL_TOC(kvmppc_hv_entry_trampoline)
+ mtmsrd r0,1 /* clear RI in MSR */
+ mtsrr0 r5
+ mtsrr1 r6
+- RFI
++ RFI_TO_KERNEL
+
+ kvmppc_call_hv_entry:
+ ld r4, HSTATE_KVM_VCPU(r13)
+@@ -164,7 +164,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
+ mtsrr0 r8
+ mtsrr1 r7
+ beq cr1, 13f /* machine check */
+- RFI
++ RFI_TO_KERNEL
+
+ /* On POWER7, we have external interrupts set to use HSRR0/1 */
+ 11: mtspr SPRN_HSRR0, r8
+@@ -877,8 +877,7 @@ BEGIN_FTR_SECTION
+ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
+ ld r0, VCPU_GPR(R0)(r4)
+ ld r4, VCPU_GPR(R4)(r4)
+-
+- hrfid
++ HRFI_TO_GUEST
+ b .
+
+ secondary_too_late:
+diff --git a/arch/powerpc/kvm/book3s_rmhandlers.S b/arch/powerpc/kvm/book3s_rmhandlers.S
+index 16c4d88ba27d..a328f99a887c 100644
+--- a/arch/powerpc/kvm/book3s_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_rmhandlers.S
+@@ -46,6 +46,9 @@
+
+ #define FUNC(name) name
+
++#define RFI_TO_KERNEL RFI
++#define RFI_TO_GUEST RFI
++
+ .macro INTERRUPT_TRAMPOLINE intno
+
+ .global kvmppc_trampoline_\intno
+@@ -141,7 +144,7 @@ kvmppc_handler_skip_ins:
+ GET_SCRATCH0(r13)
+
+ /* And get back into the code */
+- RFI
++ RFI_TO_KERNEL
+ #endif
+
+ /*
+@@ -164,6 +167,6 @@ _GLOBAL_TOC(kvmppc_entry_trampoline)
+ ori r5, r5, MSR_EE
+ mtsrr0 r7
+ mtsrr1 r6
+- RFI
++ RFI_TO_KERNEL
+
+ #include "book3s_segment.S"
+diff --git a/arch/powerpc/kvm/book3s_segment.S b/arch/powerpc/kvm/book3s_segment.S
+index acee37cde840..af3a91c00b46 100644
+--- a/arch/powerpc/kvm/book3s_segment.S
++++ b/arch/powerpc/kvm/book3s_segment.S
+@@ -156,7 +156,7 @@ no_dcbz32_on:
+ PPC_LL r9, SVCPU_R9(r3)
+ PPC_LL r3, (SVCPU_R3)(r3)
+
+- RFI
++ RFI_TO_GUEST
+ kvmppc_handler_trampoline_enter_end:
+
+
+@@ -389,5 +389,5 @@ END_FTR_SECTION_IFSET(CPU_FTR_HVMODE)
+ cmpwi r12, BOOK3S_INTERRUPT_DOORBELL
+ beqa BOOK3S_INTERRUPT_DOORBELL
+
+- RFI
++ RFI_TO_KERNEL
+ kvmppc_handler_trampoline_exit_end:
+diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c
+index 7ce3870d7ddd..a18d648d31a6 100644
+--- a/arch/powerpc/lib/feature-fixups.c
++++ b/arch/powerpc/lib/feature-fixups.c
+@@ -20,6 +20,7 @@
+ #include <asm/code-patching.h>
+ #include <asm/page.h>
+ #include <asm/sections.h>
++#include <asm/setup.h>
+
+
+ struct fixup_entry {
+@@ -113,6 +114,47 @@ void do_feature_fixups(unsigned long value, void *fixup_start, void *fixup_end)
+ }
+ }
+
++#ifdef CONFIG_PPC_BOOK3S_64
++void do_rfi_flush_fixups(enum l1d_flush_type types)
++{
++ unsigned int instrs[3], *dest;
++ long *start, *end;
++ int i;
++
++ start = PTRRELOC(&__start___rfi_flush_fixup),
++ end = PTRRELOC(&__stop___rfi_flush_fixup);
++
++ instrs[0] = 0x60000000; /* nop */
++ instrs[1] = 0x60000000; /* nop */
++ instrs[2] = 0x60000000; /* nop */
++
++ if (types & L1D_FLUSH_FALLBACK)
++ /* b .+16 to fallback flush */
++ instrs[0] = 0x48000010;
++
++ i = 0;
++ if (types & L1D_FLUSH_ORI) {
++ instrs[i++] = 0x63ff0000; /* ori 31,31,0 speculation barrier */
++ instrs[i++] = 0x63de0000; /* ori 30,30,0 L1d flush*/
++ }
++
++ if (types & L1D_FLUSH_MTTRIG)
++ instrs[i++] = 0x7c12dba6; /* mtspr TRIG2,r0 (SPR #882) */
++
++ for (i = 0; start < end; start++, i++) {
++ dest = (void *)start + *start;
++
++ pr_devel("patching dest %lx\n", (unsigned long)dest);
++
++ patch_instruction(dest, instrs[0]);
++ patch_instruction(dest + 1, instrs[1]);
++ patch_instruction(dest + 2, instrs[2]);
++ }
++
++ printk(KERN_DEBUG "rfi-flush: patched %d locations\n", i);
++}
++#endif /* CONFIG_PPC_BOOK3S_64 */
++
+ void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end)
+ {
+ long *start, *end;
+diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
+index d90893b76e7c..b7e1307fe633 100644
+--- a/arch/powerpc/perf/core-book3s.c
++++ b/arch/powerpc/perf/core-book3s.c
+@@ -401,8 +401,12 @@ static __u64 power_pmu_bhrb_to(u64 addr)
+ int ret;
+ __u64 target;
+
+- if (is_kernel_addr(addr))
+- return branch_target((unsigned int *)addr);
++ if (is_kernel_addr(addr)) {
++ if (probe_kernel_read(&instr, (void *)addr, sizeof(instr)))
++ return 0;
++
++ return branch_target(&instr);
++ }
+
+ /* Userspace: need copy instruction here then translate it */
+ pagefault_disable();
+@@ -1377,7 +1381,7 @@ static int collect_events(struct perf_event *group, int max_count,
+ int n = 0;
+ struct perf_event *event;
+
+- if (!is_software_event(group)) {
++ if (group->pmu->task_ctx_nr == perf_hw_context) {
+ if (n >= max_count)
+ return -1;
+ ctrs[n] = group;
+@@ -1385,7 +1389,7 @@ static int collect_events(struct perf_event *group, int max_count,
+ events[n++] = group->hw.config;
+ }
+ list_for_each_entry(event, &group->sibling_list, group_entry) {
+- if (!is_software_event(event) &&
++ if (event->pmu->task_ctx_nr == perf_hw_context &&
+ event->state != PERF_EVENT_STATE_OFF) {
+ if (n >= max_count)
+ return -1;
+diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
+index 20974478f8d0..e3c98361e6e4 100644
+--- a/arch/powerpc/platforms/powernv/setup.c
++++ b/arch/powerpc/platforms/powernv/setup.c
+@@ -38,14 +38,63 @@
+ #include <asm/cputhreads.h>
+ #include <asm/cpuidle.h>
+ #include <asm/code-patching.h>
++#include <asm/setup.h>
+
+ #include "powernv.h"
+ #include "subcore.h"
+
++static void pnv_setup_rfi_flush(void)
++{
++ struct device_node *np, *fw_features;
++ enum l1d_flush_type type;
++ int enable;
++
++ /* Default to fallback in case fw-features are not available */
++ type = L1D_FLUSH_FALLBACK;
++ enable = 1;
++
++ np = of_find_node_by_name(NULL, "ibm,opal");
++ fw_features = of_get_child_by_name(np, "fw-features");
++ of_node_put(np);
++
++ if (fw_features) {
++ np = of_get_child_by_name(fw_features, "inst-l1d-flush-trig2");
++ if (np && of_property_read_bool(np, "enabled"))
++ type = L1D_FLUSH_MTTRIG;
++
++ of_node_put(np);
++
++ np = of_get_child_by_name(fw_features, "inst-l1d-flush-ori30,30,0");
++ if (np && of_property_read_bool(np, "enabled"))
++ type = L1D_FLUSH_ORI;
++
++ of_node_put(np);
++
++ /* Enable unless firmware says NOT to */
++ enable = 2;
++ np = of_get_child_by_name(fw_features, "needs-l1d-flush-msr-hv-1-to-0");
++ if (np && of_property_read_bool(np, "disabled"))
++ enable--;
++
++ of_node_put(np);
++
++ np = of_get_child_by_name(fw_features, "needs-l1d-flush-msr-pr-0-to-1");
++ if (np && of_property_read_bool(np, "disabled"))
++ enable--;
++
++ of_node_put(np);
++ of_node_put(fw_features);
++ }
++
++ setup_rfi_flush(type, enable > 0);
++}
++
+ static void __init pnv_setup_arch(void)
+ {
+ set_arch_panic_timeout(10, ARCH_PANIC_TIMEOUT);
+
++ pnv_setup_rfi_flush();
++
+ /* Initialize SMP */
+ pnv_smp_init();
+
+diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
+index e6e8b241d717..b4867b4d5a1e 100644
+--- a/arch/powerpc/platforms/pseries/setup.c
++++ b/arch/powerpc/platforms/pseries/setup.c
+@@ -507,6 +507,39 @@ static void __init find_and_init_phbs(void)
+ }
+ }
+
++static void pseries_setup_rfi_flush(void)
++{
++ struct h_cpu_char_result result;
++ enum l1d_flush_type types;
++ bool enable;
++ long rc;
++
++ /* Enable by default */
++ enable = true;
++
++ rc = plpar_get_cpu_characteristics(&result);
++ if (rc == H_SUCCESS) {
++ types = L1D_FLUSH_NONE;
++
++ if (result.character & H_CPU_CHAR_L1D_FLUSH_TRIG2)
++ types |= L1D_FLUSH_MTTRIG;
++ if (result.character & H_CPU_CHAR_L1D_FLUSH_ORI30)
++ types |= L1D_FLUSH_ORI;
++
++ /* Use fallback if nothing set in hcall */
++ if (types == L1D_FLUSH_NONE)
++ types = L1D_FLUSH_FALLBACK;
++
++ if (!(result.behaviour & H_CPU_BEHAV_L1D_FLUSH_PR))
++ enable = false;
++ } else {
++ /* Default to fallback if case hcall is not available */
++ types = L1D_FLUSH_FALLBACK;
++ }
++
++ setup_rfi_flush(types, enable);
++}
++
+ static void __init pSeries_setup_arch(void)
+ {
+ set_arch_panic_timeout(10, ARCH_PANIC_TIMEOUT);
+@@ -523,7 +556,9 @@ static void __init pSeries_setup_arch(void)
+
+ fwnmi_init();
+
+- /* By default, only probe PCI (can be overriden by rtas_pci) */
++ pseries_setup_rfi_flush();
++
++ /* By default, only probe PCI (can be overridden by rtas_pci) */
+ pci_add_flags(PCI_PROBE_ONLY);
+
+ /* Find and initialize PCI host bridges */
+diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
+index 437e61159279..86f934255eb6 100644
+--- a/arch/s390/kernel/compat_linux.c
++++ b/arch/s390/kernel/compat_linux.c
+@@ -110,7 +110,7 @@ COMPAT_SYSCALL_DEFINE2(s390_setregid16, u16, rgid, u16, egid)
+
+ COMPAT_SYSCALL_DEFINE1(s390_setgid16, u16, gid)
+ {
+- return sys_setgid((gid_t)gid);
++ return sys_setgid(low2highgid(gid));
+ }
+
+ COMPAT_SYSCALL_DEFINE2(s390_setreuid16, u16, ruid, u16, euid)
+@@ -120,7 +120,7 @@ COMPAT_SYSCALL_DEFINE2(s390_setreuid16, u16, ruid, u16, euid)
+
+ COMPAT_SYSCALL_DEFINE1(s390_setuid16, u16, uid)
+ {
+- return sys_setuid((uid_t)uid);
++ return sys_setuid(low2highuid(uid));
+ }
+
+ COMPAT_SYSCALL_DEFINE3(s390_setresuid16, u16, ruid, u16, euid, u16, suid)
+@@ -173,12 +173,12 @@ COMPAT_SYSCALL_DEFINE3(s390_getresgid16, u16 __user *, rgidp,
+
+ COMPAT_SYSCALL_DEFINE1(s390_setfsuid16, u16, uid)
+ {
+- return sys_setfsuid((uid_t)uid);
++ return sys_setfsuid(low2highuid(uid));
+ }
+
+ COMPAT_SYSCALL_DEFINE1(s390_setfsgid16, u16, gid)
+ {
+- return sys_setfsgid((gid_t)gid);
++ return sys_setfsgid(low2highgid(gid));
+ }
+
+ static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
+@@ -263,6 +263,7 @@ COMPAT_SYSCALL_DEFINE2(s390_setgroups16, int, gidsetsize, u16 __user *, grouplis
+ return retval;
+ }
+
++ groups_sort(group_info);
+ retval = set_current_groups(group_info);
+ put_group_info(group_info);
+
+diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
+index ff639342a8be..c5b997757988 100644
+--- a/arch/sh/kernel/traps_32.c
++++ b/arch/sh/kernel/traps_32.c
+@@ -607,7 +607,8 @@ asmlinkage void do_divide_error(unsigned long r4)
+ break;
+ }
+
+- force_sig_info(SIGFPE, &info, current);
++ info.si_signo = SIGFPE;
++ force_sig_info(info.si_signo, &info, current);
+ }
+ #endif
+
+diff --git a/arch/um/Makefile b/arch/um/Makefile
+index 17d4460b1af3..01558aeeba50 100644
+--- a/arch/um/Makefile
++++ b/arch/um/Makefile
+@@ -116,7 +116,7 @@ archheaders:
+ archprepare: include/generated/user_constants.h
+
+ LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
+-LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
++LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib $(call cc-option, -no-pie)
+
+ CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
+ $(call cc-option, -fno-stack-protector,) \
+diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
+index a3d283addbde..ffb2cb0495c3 100644
+--- a/arch/x86/Kconfig
++++ b/arch/x86/Kconfig
+@@ -982,7 +982,7 @@ config X86_MCE_THRESHOLD
+ def_bool y
+
+ config X86_MCE_INJECT
+- depends on X86_MCE
++ depends on X86_MCE && X86_LOCAL_APIC
+ tristate "Machine check injector support"
+ ---help---
+ Provide support for injecting machine checks for testing purposes.
+diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
+index 78c366462e70..48740eb2910c 100644
+--- a/arch/x86/boot/Makefile
++++ b/arch/x86/boot/Makefile
+@@ -64,12 +64,13 @@ GCOV_PROFILE := n
+ $(obj)/bzImage: asflags-y := $(SVGA_MODE)
+
+ quiet_cmd_image = BUILD $@
++silent_redirect_image = >/dev/null
+ cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
+- $(obj)/zoffset.h $@
++ $(obj)/zoffset.h $@ $($(quiet)redirect_image)
+
+ $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
+ $(call if_changed,image)
+- @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
++ @$(kecho) 'Kernel: $@ is ready' ' (#'`cat .version`')'
+
+ OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
+ $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
+diff --git a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
+index 1c3b7ceb36d2..e7273a606a07 100644
+--- a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
++++ b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
+@@ -55,29 +55,31 @@
+ #define RAB1bl %bl
+ #define RAB2bl %cl
+
++#define CD0 0x0(%rsp)
++#define CD1 0x8(%rsp)
++#define CD2 0x10(%rsp)
++
++# used only before/after all rounds
+ #define RCD0 %r8
+ #define RCD1 %r9
+ #define RCD2 %r10
+
+-#define RCD0d %r8d
+-#define RCD1d %r9d
+-#define RCD2d %r10d
+-
+-#define RX0 %rbp
+-#define RX1 %r11
+-#define RX2 %r12
++# used only during rounds
++#define RX0 %r8
++#define RX1 %r9
++#define RX2 %r10
+
+-#define RX0d %ebp
+-#define RX1d %r11d
+-#define RX2d %r12d
++#define RX0d %r8d
++#define RX1d %r9d
++#define RX2d %r10d
+
+-#define RY0 %r13
+-#define RY1 %r14
+-#define RY2 %r15
++#define RY0 %r11
++#define RY1 %r12
++#define RY2 %r13
+
+-#define RY0d %r13d
+-#define RY1d %r14d
+-#define RY2d %r15d
++#define RY0d %r11d
++#define RY1d %r12d
++#define RY2d %r13d
+
+ #define RT0 %rdx
+ #define RT1 %rsi
+@@ -85,6 +87,8 @@
+ #define RT0d %edx
+ #define RT1d %esi
+
++#define RT1bl %sil
++
+ #define do16bit_ror(rot, op1, op2, T0, T1, tmp1, tmp2, ab, dst) \
+ movzbl ab ## bl, tmp2 ## d; \
+ movzbl ab ## bh, tmp1 ## d; \
+@@ -92,6 +96,11 @@
+ op1##l T0(CTX, tmp2, 4), dst ## d; \
+ op2##l T1(CTX, tmp1, 4), dst ## d;
+
++#define swap_ab_with_cd(ab, cd, tmp) \
++ movq cd, tmp; \
++ movq ab, cd; \
++ movq tmp, ab;
++
+ /*
+ * Combined G1 & G2 function. Reordered with help of rotates to have moves
+ * at begining.
+@@ -110,15 +119,15 @@
+ /* G1,2 && G2,2 */ \
+ do16bit_ror(32, xor, xor, Tx2, Tx3, RT0, RT1, ab ## 0, x ## 0); \
+ do16bit_ror(16, xor, xor, Ty3, Ty0, RT0, RT1, ab ## 0, y ## 0); \
+- xchgq cd ## 0, ab ## 0; \
++ swap_ab_with_cd(ab ## 0, cd ## 0, RT0); \
+ \
+ do16bit_ror(32, xor, xor, Tx2, Tx3, RT0, RT1, ab ## 1, x ## 1); \
+ do16bit_ror(16, xor, xor, Ty3, Ty0, RT0, RT1, ab ## 1, y ## 1); \
+- xchgq cd ## 1, ab ## 1; \
++ swap_ab_with_cd(ab ## 1, cd ## 1, RT0); \
+ \
+ do16bit_ror(32, xor, xor, Tx2, Tx3, RT0, RT1, ab ## 2, x ## 2); \
+ do16bit_ror(16, xor, xor, Ty3, Ty0, RT0, RT1, ab ## 2, y ## 2); \
+- xchgq cd ## 2, ab ## 2;
++ swap_ab_with_cd(ab ## 2, cd ## 2, RT0);
+
+ #define enc_round_end(ab, x, y, n) \
+ addl y ## d, x ## d; \
+@@ -168,6 +177,16 @@
+ decrypt_round3(ba, dc, (n*2)+1); \
+ decrypt_round3(ba, dc, (n*2));
+
++#define push_cd() \
++ pushq RCD2; \
++ pushq RCD1; \
++ pushq RCD0;
++
++#define pop_cd() \
++ popq RCD0; \
++ popq RCD1; \
++ popq RCD2;
++
+ #define inpack3(in, n, xy, m) \
+ movq 4*(n)(in), xy ## 0; \
+ xorq w+4*m(CTX), xy ## 0; \
+@@ -223,11 +242,8 @@ ENTRY(__twofish_enc_blk_3way)
+ * %rdx: src, RIO
+ * %rcx: bool, if true: xor output
+ */
+- pushq %r15;
+- pushq %r14;
+ pushq %r13;
+ pushq %r12;
+- pushq %rbp;
+ pushq %rbx;
+
+ pushq %rcx; /* bool xor */
+@@ -235,40 +251,36 @@ ENTRY(__twofish_enc_blk_3way)
+
+ inpack_enc3();
+
+- encrypt_cycle3(RAB, RCD, 0);
+- encrypt_cycle3(RAB, RCD, 1);
+- encrypt_cycle3(RAB, RCD, 2);
+- encrypt_cycle3(RAB, RCD, 3);
+- encrypt_cycle3(RAB, RCD, 4);
+- encrypt_cycle3(RAB, RCD, 5);
+- encrypt_cycle3(RAB, RCD, 6);
+- encrypt_cycle3(RAB, RCD, 7);
++ push_cd();
++ encrypt_cycle3(RAB, CD, 0);
++ encrypt_cycle3(RAB, CD, 1);
++ encrypt_cycle3(RAB, CD, 2);
++ encrypt_cycle3(RAB, CD, 3);
++ encrypt_cycle3(RAB, CD, 4);
++ encrypt_cycle3(RAB, CD, 5);
++ encrypt_cycle3(RAB, CD, 6);
++ encrypt_cycle3(RAB, CD, 7);
++ pop_cd();
+
+ popq RIO; /* dst */
+- popq %rbp; /* bool xor */
++ popq RT1; /* bool xor */
+
+- testb %bpl, %bpl;
++ testb RT1bl, RT1bl;
+ jnz .L__enc_xor3;
+
+ outunpack_enc3(mov);
+
+ popq %rbx;
+- popq %rbp;
+ popq %r12;
+ popq %r13;
+- popq %r14;
+- popq %r15;
+ ret;
+
+ .L__enc_xor3:
+ outunpack_enc3(xor);
+
+ popq %rbx;
+- popq %rbp;
+ popq %r12;
+ popq %r13;
+- popq %r14;
+- popq %r15;
+ ret;
+ ENDPROC(__twofish_enc_blk_3way)
+
+@@ -278,35 +290,31 @@ ENTRY(twofish_dec_blk_3way)
+ * %rsi: dst
+ * %rdx: src, RIO
+ */
+- pushq %r15;
+- pushq %r14;
+ pushq %r13;
+ pushq %r12;
+- pushq %rbp;
+ pushq %rbx;
+
+ pushq %rsi; /* dst */
+
+ inpack_dec3();
+
+- decrypt_cycle3(RAB, RCD, 7);
+- decrypt_cycle3(RAB, RCD, 6);
+- decrypt_cycle3(RAB, RCD, 5);
+- decrypt_cycle3(RAB, RCD, 4);
+- decrypt_cycle3(RAB, RCD, 3);
+- decrypt_cycle3(RAB, RCD, 2);
+- decrypt_cycle3(RAB, RCD, 1);
+- decrypt_cycle3(RAB, RCD, 0);
++ push_cd();
++ decrypt_cycle3(RAB, CD, 7);
++ decrypt_cycle3(RAB, CD, 6);
++ decrypt_cycle3(RAB, CD, 5);
++ decrypt_cycle3(RAB, CD, 4);
++ decrypt_cycle3(RAB, CD, 3);
++ decrypt_cycle3(RAB, CD, 2);
++ decrypt_cycle3(RAB, CD, 1);
++ decrypt_cycle3(RAB, CD, 0);
++ pop_cd();
+
+ popq RIO; /* dst */
+
+ outunpack_dec3();
+
+ popq %rbx;
+- popq %rbp;
+ popq %r12;
+ popq %r13;
+- popq %r14;
+- popq %r15;
+ ret;
+ ENDPROC(twofish_dec_blk_3way)
+diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
+index c97effa6c72b..cb8fd023b23f 100644
+--- a/arch/x86/include/asm/alternative.h
++++ b/arch/x86/include/asm/alternative.h
+@@ -1,6 +1,8 @@
+ #ifndef _ASM_X86_ALTERNATIVE_H
+ #define _ASM_X86_ALTERNATIVE_H
+
++#ifndef __ASSEMBLY__
++
+ #include <linux/types.h>
+ #include <linux/stddef.h>
+ #include <linux/stringify.h>
+@@ -132,7 +134,7 @@ static inline int alternatives_text_reserved(void *start, void *end)
+ ".popsection\n" \
+ ".pushsection .altinstr_replacement, \"ax\"\n" \
+ ALTINSTR_REPLACEMENT(newinstr, feature, 1) \
+- ".popsection"
++ ".popsection\n"
+
+ #define ALTERNATIVE_2(oldinstr, newinstr1, feature1, newinstr2, feature2)\
+ OLDINSTR_2(oldinstr, 1, 2) \
+@@ -143,7 +145,7 @@ static inline int alternatives_text_reserved(void *start, void *end)
+ ".pushsection .altinstr_replacement, \"ax\"\n" \
+ ALTINSTR_REPLACEMENT(newinstr1, feature1, 1) \
+ ALTINSTR_REPLACEMENT(newinstr2, feature2, 2) \
+- ".popsection"
++ ".popsection\n"
+
+ /*
+ * This must be included *after* the definition of ALTERNATIVE due to
+@@ -265,4 +267,6 @@ extern void *text_poke(void *addr, const void *opcode, size_t len);
+ extern int poke_int3_handler(struct pt_regs *regs);
+ extern void *text_poke_bp(void *addr, const void *opcode, size_t len, void *handler);
+
++#endif /* __ASSEMBLY__ */
++
+ #endif /* _ASM_X86_ALTERNATIVE_H */
+diff --git a/arch/x86/include/asm/asm-prototypes.h b/arch/x86/include/asm/asm-prototypes.h
+new file mode 100644
+index 000000000000..44b8762fa0c7
+--- /dev/null
++++ b/arch/x86/include/asm/asm-prototypes.h
+@@ -0,0 +1,16 @@
++#include <asm/ftrace.h>
++#include <asm/uaccess.h>
++#include <asm/string.h>
++#include <asm/page.h>
++#include <asm/checksum.h>
++
++#include <asm-generic/asm-prototypes.h>
++
++#include <asm/page.h>
++#include <asm/pgtable.h>
++#include <asm/special_insns.h>
++#include <asm/preempt.h>
++
++#ifndef CONFIG_X86_CMPXCHG64
++extern void cmpxchg8b_emu(void);
++#endif
+diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
+index e2015452177d..37496d271033 100644
+--- a/arch/x86/include/asm/asm.h
++++ b/arch/x86/include/asm/asm.h
+@@ -88,4 +88,15 @@
+ /* For C file, we already have NOKPROBE_SYMBOL macro */
+ #endif
+
++#ifndef __ASSEMBLY__
++/*
++ * This output constraint should be used for any inline asm which has a "call"
++ * instruction. Otherwise the asm may be inserted before the frame pointer
++ * gets set up by the containing function. If you forget to do this, objtool
++ * may print a "call without frame pointer save/setup" warning.
++ */
++register unsigned long current_stack_pointer asm(_ASM_SP);
++#define ASM_CALL_CONSTRAINT "+r" (current_stack_pointer)
++#endif
++
+ #endif /* _ASM_X86_ASM_H */
+diff --git a/arch/x86/include/asm/barrier.h b/arch/x86/include/asm/barrier.h
+index 959e45b81fe2..0295dd893884 100644
+--- a/arch/x86/include/asm/barrier.h
++++ b/arch/x86/include/asm/barrier.h
+@@ -24,6 +24,30 @@
+ #define wmb() asm volatile("sfence" ::: "memory")
+ #endif
+
++/**
++ * array_index_mask_nospec() - generate a mask that is ~0UL when the
++ * bounds check succeeds and 0 otherwise
++ * @index: array element index
++ * @size: number of elements in array
++ *
++ * Returns:
++ * 0 - (index < size)
++ */
++static inline unsigned long array_index_mask_nospec(unsigned long index,
++ unsigned long size)
++{
++ unsigned long mask;
++
++ asm ("cmp %1,%2; sbb %0,%0;"
++ :"=r" (mask)
++ :"r"(size),"r" (index)
++ :"cc");
++ return mask;
++}
++
++/* Override the default implementation from linux/nospec.h. */
++#define array_index_mask_nospec array_index_mask_nospec
++
+ #ifdef CONFIG_X86_PPRO_FENCE
+ #define dma_rmb() rmb()
+ #else
+diff --git a/arch/x86/include/asm/cmdline.h b/arch/x86/include/asm/cmdline.h
+index e01f7f7ccb0c..84ae170bc3d0 100644
+--- a/arch/x86/include/asm/cmdline.h
++++ b/arch/x86/include/asm/cmdline.h
+@@ -2,5 +2,7 @@
+ #define _ASM_X86_CMDLINE_H
+
+ int cmdline_find_option_bool(const char *cmdline_ptr, const char *option);
++int cmdline_find_option(const char *cmdline_ptr, const char *option,
++ char *buffer, int bufsize);
+
+ #endif /* _ASM_X86_CMDLINE_H */
+diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
+index 3d6606fb97d0..026c0b4ae086 100644
+--- a/arch/x86/include/asm/cpufeature.h
++++ b/arch/x86/include/asm/cpufeature.h
+@@ -348,6 +348,8 @@ extern const char * const x86_bug_flags[NBUGINTS*32];
+ set_bit(bit, (unsigned long *)cpu_caps_set); \
+ } while (0)
+
++#define setup_force_cpu_bug(bit) setup_force_cpu_cap(bit)
++
+ #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU)
+ #define cpu_has_de boot_cpu_has(X86_FEATURE_DE)
+ #define cpu_has_pse boot_cpu_has(X86_FEATURE_PSE)
+diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h
+index f226df064660..8b17c2ad1048 100644
+--- a/arch/x86/include/asm/disabled-features.h
++++ b/arch/x86/include/asm/disabled-features.h
+@@ -21,11 +21,13 @@
+ # define DISABLE_K6_MTRR (1<<(X86_FEATURE_K6_MTRR & 31))
+ # define DISABLE_CYRIX_ARR (1<<(X86_FEATURE_CYRIX_ARR & 31))
+ # define DISABLE_CENTAUR_MCR (1<<(X86_FEATURE_CENTAUR_MCR & 31))
++# define DISABLE_PCID 0
+ #else
+ # define DISABLE_VME 0
+ # define DISABLE_K6_MTRR 0
+ # define DISABLE_CYRIX_ARR 0
+ # define DISABLE_CENTAUR_MCR 0
++# define DISABLE_PCID (1<<(X86_FEATURE_PCID & 31))
+ #endif /* CONFIG_X86_64 */
+
+ /*
+@@ -35,7 +37,7 @@
+ #define DISABLED_MASK1 0
+ #define DISABLED_MASK2 0
+ #define DISABLED_MASK3 (DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR)
+-#define DISABLED_MASK4 0
++#define DISABLED_MASK4 (DISABLE_PCID)
+ #define DISABLED_MASK5 0
+ #define DISABLED_MASK6 0
+ #define DISABLED_MASK7 0
+diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h
+index 0f5fb6b6567e..ebaf64d0a785 100644
+--- a/arch/x86/include/asm/hardirq.h
++++ b/arch/x86/include/asm/hardirq.h
+@@ -21,10 +21,6 @@ typedef struct {
+ #ifdef CONFIG_SMP
+ unsigned int irq_resched_count;
+ unsigned int irq_call_count;
+- /*
+- * irq_tlb_count is double-counted in irq_call_count, so it must be
+- * subtracted from irq_call_count when displaying irq_call_count
+- */
+ unsigned int irq_tlb_count;
+ #endif
+ #ifdef CONFIG_X86_THERMAL_VECTOR
+diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h
+new file mode 100644
+index 000000000000..6999f7d01a0d
+--- /dev/null
++++ b/arch/x86/include/asm/intel-family.h
+@@ -0,0 +1,68 @@
++#ifndef _ASM_X86_INTEL_FAMILY_H
++#define _ASM_X86_INTEL_FAMILY_H
++
++/*
++ * "Big Core" Processors (Branded as Core, Xeon, etc...)
++ *
++ * The "_X" parts are generally the EP and EX Xeons, or the
++ * "Extreme" ones, like Broadwell-E.
++ *
++ * Things ending in "2" are usually because we have no better
++ * name for them. There's no processor called "WESTMERE2".
++ */
++
++#define INTEL_FAM6_CORE_YONAH 0x0E
++#define INTEL_FAM6_CORE2_MEROM 0x0F
++#define INTEL_FAM6_CORE2_MEROM_L 0x16
++#define INTEL_FAM6_CORE2_PENRYN 0x17
++#define INTEL_FAM6_CORE2_DUNNINGTON 0x1D
++
++#define INTEL_FAM6_NEHALEM 0x1E
++#define INTEL_FAM6_NEHALEM_EP 0x1A
++#define INTEL_FAM6_NEHALEM_EX 0x2E
++#define INTEL_FAM6_WESTMERE 0x25
++#define INTEL_FAM6_WESTMERE2 0x1F
++#define INTEL_FAM6_WESTMERE_EP 0x2C
++#define INTEL_FAM6_WESTMERE_EX 0x2F
++
++#define INTEL_FAM6_SANDYBRIDGE 0x2A
++#define INTEL_FAM6_SANDYBRIDGE_X 0x2D
++#define INTEL_FAM6_IVYBRIDGE 0x3A
++#define INTEL_FAM6_IVYBRIDGE_X 0x3E
++
++#define INTEL_FAM6_HASWELL_CORE 0x3C
++#define INTEL_FAM6_HASWELL_X 0x3F
++#define INTEL_FAM6_HASWELL_ULT 0x45
++#define INTEL_FAM6_HASWELL_GT3E 0x46
++
++#define INTEL_FAM6_BROADWELL_CORE 0x3D
++#define INTEL_FAM6_BROADWELL_XEON_D 0x56
++#define INTEL_FAM6_BROADWELL_GT3E 0x47
++#define INTEL_FAM6_BROADWELL_X 0x4F
++
++#define INTEL_FAM6_SKYLAKE_MOBILE 0x4E
++#define INTEL_FAM6_SKYLAKE_DESKTOP 0x5E
++#define INTEL_FAM6_SKYLAKE_X 0x55
++#define INTEL_FAM6_KABYLAKE_MOBILE 0x8E
++#define INTEL_FAM6_KABYLAKE_DESKTOP 0x9E
++
++/* "Small Core" Processors (Atom) */
++
++#define INTEL_FAM6_ATOM_PINEVIEW 0x1C
++#define INTEL_FAM6_ATOM_LINCROFT 0x26
++#define INTEL_FAM6_ATOM_PENWELL 0x27
++#define INTEL_FAM6_ATOM_CLOVERVIEW 0x35
++#define INTEL_FAM6_ATOM_CEDARVIEW 0x36
++#define INTEL_FAM6_ATOM_SILVERMONT1 0x37 /* BayTrail/BYT / Valleyview */
++#define INTEL_FAM6_ATOM_SILVERMONT2 0x4D /* Avaton/Rangely */
++#define INTEL_FAM6_ATOM_AIRMONT 0x4C /* CherryTrail / Braswell */
++#define INTEL_FAM6_ATOM_MERRIFIELD1 0x4A /* Tangier */
++#define INTEL_FAM6_ATOM_MERRIFIELD2 0x5A /* Annidale */
++#define INTEL_FAM6_ATOM_GOLDMONT 0x5C
++#define INTEL_FAM6_ATOM_DENVERTON 0x5F /* Goldmont Microserver */
++
++/* Xeon Phi */
++
++#define INTEL_FAM6_XEON_PHI_KNL 0x57 /* Knights Landing */
++
++#endif /* _ASM_X86_INTEL_FAMILY_H */
+diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
+index 606f5fff1989..6e014befd522 100644
+--- a/arch/x86/include/asm/kvm_host.h
++++ b/arch/x86/include/asm/kvm_host.h
+@@ -933,7 +933,8 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
+ static inline int emulate_instruction(struct kvm_vcpu *vcpu,
+ int emulation_type)
+ {
+- return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
++ return x86_emulate_instruction(vcpu, 0,
++ emulation_type | EMULTYPE_NO_REEXECUTE, NULL, 0);
+ }
+
+ void kvm_enable_efer_bits(u64);
+diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
+index 23ba6765b718..4ac06db325a2 100644
+--- a/arch/x86/include/asm/processor.h
++++ b/arch/x86/include/asm/processor.h
+@@ -150,8 +150,8 @@ extern struct cpuinfo_x86 boot_cpu_data;
+ extern struct cpuinfo_x86 new_cpu_data;
+
+ extern struct tss_struct doublefault_tss;
+-extern __u32 cpu_caps_cleared[NCAPINTS];
+-extern __u32 cpu_caps_set[NCAPINTS];
++extern __u32 cpu_caps_cleared[NCAPINTS + NBUGINTS];
++extern __u32 cpu_caps_set[NCAPINTS + NBUGINTS];
+
+ #ifdef CONFIG_SMP
+ DECLARE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info);
+@@ -701,7 +701,7 @@ static inline void sync_core(void)
+ {
+ int tmp;
+
+-#ifdef CONFIG_M486
++#ifdef CONFIG_X86_32
+ /*
+ * Do a CPUID if available, otherwise do a jump. The jump
+ * can conveniently enough be the jump around CPUID.
+diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
+index b4bdec3e9523..b58daa40eae9 100644
+--- a/arch/x86/include/asm/thread_info.h
++++ b/arch/x86/include/asm/thread_info.h
+@@ -184,17 +184,6 @@ static inline struct thread_info *current_thread_info(void)
+ return (struct thread_info *)(current_top_of_stack() - THREAD_SIZE);
+ }
+
+-static inline unsigned long current_stack_pointer(void)
+-{
+- unsigned long sp;
+-#ifdef CONFIG_X86_64
+- asm("mov %%rsp,%0" : "=g" (sp));
+-#else
+- asm("mov %%esp,%0" : "=g" (sp));
+-#endif
+- return sp;
+-}
+-
+ #else /* !__ASSEMBLY__ */
+
+ /* Load thread_info address into "reg" */
+diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
+index 7e459b7ee708..13c1a094cead 100644
+--- a/arch/x86/include/asm/tlbflush.h
++++ b/arch/x86/include/asm/tlbflush.h
+@@ -7,6 +7,54 @@
+ #include <asm/processor.h>
+ #include <asm/special_insns.h>
+
++static inline void __invpcid(unsigned long pcid, unsigned long addr,
++ unsigned long type)
++{
++ struct { u64 d[2]; } desc = { { pcid, addr } };
++
++ /*
++ * The memory clobber is because the whole point is to invalidate
++ * stale TLB entries and, especially if we're flushing global
++ * mappings, we don't want the compiler to reorder any subsequent
++ * memory accesses before the TLB flush.
++ *
++ * The hex opcode is invpcid (%ecx), %eax in 32-bit mode and
++ * invpcid (%rcx), %rax in long mode.
++ */
++ asm volatile (".byte 0x66, 0x0f, 0x38, 0x82, 0x01"
++ : : "m" (desc), "a" (type), "c" (&desc) : "memory");
++}
++
++#define INVPCID_TYPE_INDIV_ADDR 0
++#define INVPCID_TYPE_SINGLE_CTXT 1
++#define INVPCID_TYPE_ALL_INCL_GLOBAL 2
++#define INVPCID_TYPE_ALL_NON_GLOBAL 3
++
++/* Flush all mappings for a given pcid and addr, not including globals. */
++static inline void invpcid_flush_one(unsigned long pcid,
++ unsigned long addr)
++{
++ __invpcid(pcid, addr, INVPCID_TYPE_INDIV_ADDR);
++}
++
++/* Flush all mappings for a given PCID, not including globals. */
++static inline void invpcid_flush_single_context(unsigned long pcid)
++{
++ __invpcid(pcid, 0, INVPCID_TYPE_SINGLE_CTXT);
++}
++
++/* Flush all mappings, including globals, for all PCIDs. */
++static inline void invpcid_flush_all(void)
++{
++ __invpcid(0, 0, INVPCID_TYPE_ALL_INCL_GLOBAL);
++}
++
++/* Flush all mappings for all PCIDs except globals. */
++static inline void invpcid_flush_all_nonglobals(void)
++{
++ __invpcid(0, 0, INVPCID_TYPE_ALL_NON_GLOBAL);
++}
++
+ #ifdef CONFIG_PARAVIRT
+ #include <asm/paravirt.h>
+ #else
+@@ -86,7 +134,14 @@ static inline void cr4_set_bits_and_update_boot(unsigned long mask)
+
+ static inline void __native_flush_tlb(void)
+ {
++ /*
++ * If current->mm == NULL then we borrow a mm which may change during a
++ * task switch and therefore we must not be preempted while we write CR3
++ * back:
++ */
++ preempt_disable();
+ native_write_cr3(native_read_cr3());
++ preempt_enable();
+ }
+
+ static inline void __native_flush_tlb_global_irq_disabled(void)
+@@ -104,6 +159,15 @@ static inline void __native_flush_tlb_global(void)
+ {
+ unsigned long flags;
+
++ if (static_cpu_has(X86_FEATURE_INVPCID)) {
++ /*
++ * Using INVPCID is considerably faster than a pair of writes
++ * to CR4 sandwiched inside an IRQ flag save/restore.
++ */
++ invpcid_flush_all();
++ return;
++ }
++
+ /*
+ * Read-modify-write to CR4 - protect it from preemption and
+ * from interrupts. (Use the raw variant because this code can
+@@ -127,6 +191,14 @@ static inline void __flush_tlb_all(void)
+ __flush_tlb_global();
+ else
+ __flush_tlb();
++
++ /*
++ * Note: if we somehow had PCID but not PGE, then this wouldn't work --
++ * we'd end up flushing kernel translations for the current ASID but
++ * we might fail to flush kernel translations for other cached ASIDs.
++ *
++ * To avoid this issue, we force PCID off if PGE is off.
++ */
+ }
+
+ static inline void __flush_tlb_one(unsigned long addr)
+@@ -140,7 +212,6 @@ static inline void __flush_tlb_one(unsigned long addr)
+ /*
+ * TLB flushing:
+ *
+- * - flush_tlb() flushes the current mm struct TLBs
+ * - flush_tlb_all() flushes all processes TLBs
+ * - flush_tlb_mm(mm) flushes the specified mm context TLB's
+ * - flush_tlb_page(vma, vmaddr) flushes one page
+@@ -172,11 +243,6 @@ static inline void flush_tlb_all(void)
+ __flush_tlb_all();
+ }
+
+-static inline void flush_tlb(void)
+-{
+- __flush_tlb_up();
+-}
+-
+ static inline void local_flush_tlb(void)
+ {
+ __flush_tlb_up();
+@@ -238,14 +304,11 @@ static inline void flush_tlb_kernel_range(unsigned long start,
+ flush_tlb_mm_range(vma->vm_mm, start, end, vma->vm_flags)
+
+ extern void flush_tlb_all(void);
+-extern void flush_tlb_current_task(void);
+ extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
+ extern void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
+ unsigned long end, unsigned long vmflag);
+ extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
+
+-#define flush_tlb() flush_tlb_current_task()
+-
+ void native_flush_tlb_others(const struct cpumask *cpumask,
+ struct mm_struct *mm,
+ unsigned long start, unsigned long end);
+diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
+index d1918a8c4393..9b5f8e6a9864 100644
+--- a/arch/x86/kernel/alternative.c
++++ b/arch/x86/kernel/alternative.c
+@@ -41,17 +41,6 @@ static int __init setup_noreplace_smp(char *str)
+ }
+ __setup("noreplace-smp", setup_noreplace_smp);
+
+-#ifdef CONFIG_PARAVIRT
+-static int __initdata_or_module noreplace_paravirt = 0;
+-
+-static int __init setup_noreplace_paravirt(char *str)
+-{
+- noreplace_paravirt = 1;
+- return 1;
+-}
+-__setup("noreplace-paravirt", setup_noreplace_paravirt);
+-#endif
+-
+ #define DPRINTK(fmt, args...) \
+ do { \
+ if (debug_alternative) \
+@@ -326,9 +315,12 @@ done:
+ static void __init_or_module optimize_nops(struct alt_instr *a, u8 *instr)
+ {
+ unsigned long flags;
++ int i;
+
+- if (instr[0] != 0x90)
+- return;
++ for (i = 0; i < a->padlen; i++) {
++ if (instr[i] != 0x90)
++ return;
++ }
+
+ local_irq_save(flags);
+ add_nops(instr + (a->instrlen - a->padlen), a->padlen);
+@@ -571,9 +563,6 @@ void __init_or_module apply_paravirt(struct paravirt_patch_site *start,
+ struct paravirt_patch_site *p;
+ char insnbuf[MAX_PATCH_LEN];
+
+- if (noreplace_paravirt)
+- return;
+-
+ for (p = start; p < end; p++) {
+ unsigned int used;
+
+diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
+index f4dc2462a1ac..484ffab4d3e8 100644
+--- a/arch/x86/kernel/apic/io_apic.c
++++ b/arch/x86/kernel/apic/io_apic.c
+@@ -2728,8 +2728,8 @@ static struct resource * __init ioapic_setup_resources(void)
+ res[num].flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ snprintf(mem, IOAPIC_RESOURCE_NAME_SIZE, "IOAPIC %u", i);
+ mem += IOAPIC_RESOURCE_NAME_SIZE;
++ ioapics[i].iomem_res = &res[num];
+ num++;
+- ioapics[i].iomem_res = res;
+ }
+
+ ioapic_resources = res;
+diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
+index 03445346ee0a..4c7dd836304a 100644
+--- a/arch/x86/kernel/cpu/bugs.c
++++ b/arch/x86/kernel/cpu/bugs.c
+@@ -65,6 +65,14 @@ static void __init check_fpu(void)
+
+ void __init check_bugs(void)
+ {
++#ifdef CONFIG_X86_32
++ /*
++ * Regardless of whether PCID is enumerated, the SDM says
++ * that it can't be enabled in 32-bit mode.
++ */
++ setup_clear_cpu_cap(X86_FEATURE_PCID);
++#endif
++
+ identify_boot_cpu();
+ #ifndef CONFIG_SMP
+ pr_info("CPU: ");
+diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
+index 5732326ec126..9613a72723cd 100644
+--- a/arch/x86/kernel/cpu/common.c
++++ b/arch/x86/kernel/cpu/common.c
+@@ -172,6 +172,40 @@ static int __init x86_xsaves_setup(char *s)
+ }
+ __setup("noxsaves", x86_xsaves_setup);
+
++#ifdef CONFIG_X86_64
++static int __init x86_pcid_setup(char *s)
++{
++ /* require an exact match without trailing characters */
++ if (strlen(s))
++ return 0;
++
++ /* do not emit a message if the feature is not present */
++ if (!boot_cpu_has(X86_FEATURE_PCID))
++ return 1;
++
++ setup_clear_cpu_cap(X86_FEATURE_PCID);
++ pr_info("nopcid: PCID feature disabled\n");
++ return 1;
++}
++__setup("nopcid", x86_pcid_setup);
++#endif
++
++static int __init x86_noinvpcid_setup(char *s)
++{
++ /* noinvpcid doesn't accept parameters */
++ if (s)
++ return -EINVAL;
++
++ /* do not emit a message if the feature is not present */
++ if (!boot_cpu_has(X86_FEATURE_INVPCID))
++ return 0;
++
++ setup_clear_cpu_cap(X86_FEATURE_INVPCID);
++ pr_info("noinvpcid: INVPCID feature disabled\n");
++ return 0;
++}
++early_param("noinvpcid", x86_noinvpcid_setup);
++
+ #ifdef CONFIG_X86_32
+ static int cachesize_override = -1;
+ static int disable_x86_serial_nr = 1;
+@@ -305,6 +339,25 @@ static __always_inline void setup_smap(struct cpuinfo_x86 *c)
+ }
+ }
+
++static void setup_pcid(struct cpuinfo_x86 *c)
++{
++ if (cpu_has(c, X86_FEATURE_PCID)) {
++ if (cpu_has(c, X86_FEATURE_PGE)) {
++ cr4_set_bits(X86_CR4_PCIDE);
++ } else {
++ /*
++ * flush_tlb_all(), as currently implemented, won't
++ * work if PCID is on but PGE is not. Since that
++ * combination doesn't exist on real hardware, there's
++ * no reason to try to fully support it, but it's
++ * polite to avoid corrupting data if we're on
++ * an improperly configured VM.
++ */
++ clear_cpu_cap(c, X86_FEATURE_PCID);
++ }
++ }
++}
++
+ /*
+ * Some CPU features depend on higher CPUID levels, which may not always
+ * be available due to CPUID level capping or broken virtualization
+@@ -383,8 +436,8 @@ static const char *table_lookup_model(struct cpuinfo_x86 *c)
+ return NULL; /* Not found */
+ }
+
+-__u32 cpu_caps_cleared[NCAPINTS];
+-__u32 cpu_caps_set[NCAPINTS];
++__u32 cpu_caps_cleared[NCAPINTS + NBUGINTS];
++__u32 cpu_caps_set[NCAPINTS + NBUGINTS];
+
+ void load_percpu_segment(int cpu)
+ {
+@@ -613,6 +666,16 @@ void cpu_detect(struct cpuinfo_x86 *c)
+ }
+ }
+
++static void apply_forced_caps(struct cpuinfo_x86 *c)
++{
++ int i;
++
++ for (i = 0; i < NCAPINTS + NBUGINTS; i++) {
++ c->x86_capability[i] &= ~cpu_caps_cleared[i];
++ c->x86_capability[i] |= cpu_caps_set[i];
++ }
++}
++
+ void get_cpu_cap(struct cpuinfo_x86 *c)
+ {
+ u32 tfms, xlvl;
+@@ -904,11 +967,8 @@ static void identify_cpu(struct cpuinfo_x86 *c)
+ if (this_cpu->c_identify)
+ this_cpu->c_identify(c);
+
+- /* Clear/Set all flags overriden by options, after probe */
+- for (i = 0; i < NCAPINTS; i++) {
+- c->x86_capability[i] &= ~cpu_caps_cleared[i];
+- c->x86_capability[i] |= cpu_caps_set[i];
+- }
++ /* Clear/Set all flags overridden by options, after probe */
++ apply_forced_caps(c);
+
+ #ifdef CONFIG_X86_64
+ c->apicid = apic->phys_pkg_id(c->initial_apicid, 0);
+@@ -934,6 +994,9 @@ static void identify_cpu(struct cpuinfo_x86 *c)
+ setup_smep(c);
+ setup_smap(c);
+
++ /* Set up PCID */
++ setup_pcid(c);
++
+ /*
+ * The vendor-specific functions might have changed features.
+ * Now we do "generic changes."
+@@ -966,10 +1029,7 @@ static void identify_cpu(struct cpuinfo_x86 *c)
+ * Clear/Set all flags overriden by options, need do it
+ * before following smp all cpus cap AND.
+ */
+- for (i = 0; i < NCAPINTS; i++) {
+- c->x86_capability[i] &= ~cpu_caps_cleared[i];
+- c->x86_capability[i] |= cpu_caps_set[i];
+- }
++ apply_forced_caps(c);
+
+ /*
+ * On SMP, boot_cpu_data holds the common feature set between
+diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
+index edcb0e28c336..13fb13334f2a 100644
+--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
++++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
+@@ -934,6 +934,8 @@ static int __populate_cache_leaves(unsigned int cpu)
+ ci_leaf_init(this_leaf++, &id4_regs);
+ __cache_cpumap_setup(cpu, idx, &id4_regs);
+ }
++ this_cpu_ci->cpu_map_populated = true;
++
+ return 0;
+ }
+
+diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c
+index 4cfba4371a71..101bfae369e1 100644
+--- a/arch/x86/kernel/cpu/mcheck/mce-inject.c
++++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c
+@@ -152,7 +152,6 @@ static void raise_mce(struct mce *m)
+ if (context == MCJ_CTX_RANDOM)
+ return;
+
+-#ifdef CONFIG_X86_LOCAL_APIC
+ if (m->inject_flags & (MCJ_IRQ_BROADCAST | MCJ_NMI_BROADCAST)) {
+ unsigned long start;
+ int cpu;
+@@ -193,9 +192,7 @@ static void raise_mce(struct mce *m)
+ raise_local();
+ put_cpu();
+ put_online_cpus();
+- } else
+-#endif
+- {
++ } else {
+ preempt_disable();
+ raise_local();
+ preempt_enable();
+diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
+index 12829c3ced3c..ff422a92f063 100644
+--- a/arch/x86/kernel/cpu/microcode/amd.c
++++ b/arch/x86/kernel/cpu/microcode/amd.c
+@@ -153,6 +153,7 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
+ #define F14H_MPB_MAX_SIZE 1824
+ #define F15H_MPB_MAX_SIZE 4096
+ #define F16H_MPB_MAX_SIZE 3458
++#define F17H_MPB_MAX_SIZE 3200
+
+ switch (family) {
+ case 0x14:
+@@ -164,6 +165,9 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
+ case 0x16:
+ max_size = F16H_MPB_MAX_SIZE;
+ break;
++ case 0x17:
++ max_size = F17H_MPB_MAX_SIZE;
++ break;
+ default:
+ max_size = F1XH_MPB_MAX_SIZE;
+ break;
+diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
+index 6ca31bf3ccbd..1009c82088ed 100644
+--- a/arch/x86/kernel/cpu/microcode/intel.c
++++ b/arch/x86/kernel/cpu/microcode/intel.c
+@@ -276,9 +276,17 @@ static bool is_blacklisted(unsigned int cpu)
+ {
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
+
+- if (c->x86 == 6 && c->x86_model == 79) {
+- pr_err_once("late loading on model 79 is disabled.\n");
+- return true;
++ /*
++ * Late loading on model 79 with microcode revision less than 0x0b000021
++ * may result in a system hang. This behavior is documented in item
++ * BDF90, #334165 (Intel Xeon Processor E7-8800/4800 v4 Product Family).
++ */
++ if (c->x86 == 6 &&
++ c->x86_model == 79 &&
++ c->x86_mask == 0x01 &&
++ c->microcode < 0x0b000021) {
++ pr_err_once("Erratum BDF90: late loading with revision < 0x0b000021 (0x%x) disabled.\n", c->microcode);
++ pr_err_once("Please consider either early loading through initrd/built-in or a potential BIOS update.\n");
+ }
+
+ return false;
+diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
+index 83f33a2e662f..904b31ebc419 100644
+--- a/arch/x86/kernel/cpu/perf_event.c
++++ b/arch/x86/kernel/cpu/perf_event.c
+@@ -187,8 +187,8 @@ static void release_pmc_hardware(void) {}
+
+ static bool check_hw_exists(void)
+ {
+- u64 val, val_fail, val_new= ~0;
+- int i, reg, reg_fail, ret = 0;
++ u64 val, val_fail = -1, val_new= ~0;
++ int i, reg, reg_fail = -1, ret = 0;
+ int bios_fail = 0;
+ int reg_safe = -1;
+
+diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
+index 7e429c99c728..63dd2c971db8 100644
+--- a/arch/x86/kernel/head_32.S
++++ b/arch/x86/kernel/head_32.S
+@@ -670,14 +670,17 @@ __PAGE_ALIGNED_BSS
+ initial_pg_pmd:
+ .fill 1024*KPMDS,4,0
+ #else
+-ENTRY(initial_page_table)
++.globl initial_page_table
++initial_page_table:
+ .fill 1024,4,0
+ #endif
+ initial_pg_fixmap:
+ .fill 1024,4,0
+-ENTRY(empty_zero_page)
++.globl empty_zero_page
++empty_zero_page:
+ .fill 4096,1,0
+-ENTRY(swapper_pg_dir)
++.globl swapper_pg_dir
++swapper_pg_dir:
+ .fill 1024,4,0
+
+ /*
+diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
+index e5952c225532..b6460c5a9cab 100644
+--- a/arch/x86/kernel/irq.c
++++ b/arch/x86/kernel/irq.c
+@@ -96,8 +96,7 @@ int arch_show_interrupts(struct seq_file *p, int prec)
+ seq_puts(p, " Rescheduling interrupts\n");
+ seq_printf(p, "%*s: ", prec, "CAL");
+ for_each_online_cpu(j)
+- seq_printf(p, "%10u ", irq_stats(j)->irq_call_count -
+- irq_stats(j)->irq_tlb_count);
++ seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
+ seq_puts(p, " Function call interrupts\n");
+ seq_printf(p, "%*s: ", prec, "TLB");
+ for_each_online_cpu(j)
+diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
+index f9fd86a7fcc7..9f4ffc122d9e 100644
+--- a/arch/x86/kernel/irq_32.c
++++ b/arch/x86/kernel/irq_32.c
+@@ -71,7 +71,7 @@ static void call_on_stack(void *func, void *stack)
+
+ static inline void *current_stack(void)
+ {
+- return (void *)(current_stack_pointer() & ~(THREAD_SIZE - 1));
++ return (void *)(current_stack_pointer & ~(THREAD_SIZE - 1));
+ }
+
+ static inline int
+@@ -96,7 +96,7 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
+
+ /* Save the next esp at the bottom of the stack */
+ prev_esp = (u32 *)irqstk;
+- *prev_esp = current_stack_pointer();
++ *prev_esp = current_stack_pointer;
+
+ if (unlikely(overflow))
+ call_on_stack(print_stack_overflow, isp);
+@@ -149,7 +149,7 @@ void do_softirq_own_stack(void)
+
+ /* Push the previous esp onto the stack */
+ prev_esp = (u32 *)irqstk;
+- *prev_esp = current_stack_pointer();
++ *prev_esp = current_stack_pointer;
+
+ call_on_stack(__do_softirq, isp);
+ }
+diff --git a/arch/x86/kernel/paravirt_patch_64.c b/arch/x86/kernel/paravirt_patch_64.c
+index a1da6737ba5b..a91d9b9b4bde 100644
+--- a/arch/x86/kernel/paravirt_patch_64.c
++++ b/arch/x86/kernel/paravirt_patch_64.c
+@@ -9,7 +9,6 @@ DEF_NATIVE(pv_irq_ops, save_fl, "pushfq; popq %rax");
+ DEF_NATIVE(pv_mmu_ops, read_cr2, "movq %cr2, %rax");
+ DEF_NATIVE(pv_mmu_ops, read_cr3, "movq %cr3, %rax");
+ DEF_NATIVE(pv_mmu_ops, write_cr3, "movq %rdi, %cr3");
+-DEF_NATIVE(pv_mmu_ops, flush_tlb_single, "invlpg (%rdi)");
+ DEF_NATIVE(pv_cpu_ops, clts, "clts");
+ DEF_NATIVE(pv_cpu_ops, wbinvd, "wbinvd");
+
+@@ -57,7 +56,6 @@ unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
+ PATCH_SITE(pv_mmu_ops, read_cr3);
+ PATCH_SITE(pv_mmu_ops, write_cr3);
+ PATCH_SITE(pv_cpu_ops, clts);
+- PATCH_SITE(pv_mmu_ops, flush_tlb_single);
+ PATCH_SITE(pv_cpu_ops, wbinvd);
+
+ patch_site:
+diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
+index 0549ae3cb332..d9ea27ec9dbd 100644
+--- a/arch/x86/kernel/reboot.c
++++ b/arch/x86/kernel/reboot.c
+@@ -93,6 +93,10 @@ void __noreturn machine_real_restart(unsigned int type)
+ load_cr3(initial_page_table);
+ #else
+ write_cr3(real_mode_header->trampoline_pgd);
++
++ /* Exiting long mode will fail if CR4.PCIDE is set. */
++ if (static_cpu_has(X86_FEATURE_PCID))
++ cr4_clear_bits(X86_CR4_PCIDE);
+ #endif
+
+ /* Jump to the identity-mapped low memory code */
+diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
+index 50e547eac8cd..f6911cc90a81 100644
+--- a/arch/x86/kernel/smpboot.c
++++ b/arch/x86/kernel/smpboot.c
+@@ -107,25 +107,16 @@ static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
+ spin_lock_irqsave(&rtc_lock, flags);
+ CMOS_WRITE(0xa, 0xf);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+- local_flush_tlb();
+- pr_debug("1.\n");
+ *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH)) =
+ start_eip >> 4;
+- pr_debug("2.\n");
+ *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) =
+ start_eip & 0xf;
+- pr_debug("3.\n");
+ }
+
+ static inline void smpboot_restore_warm_reset_vector(void)
+ {
+ unsigned long flags;
+
+- /*
+- * Install writable page 0 entry to set BIOS data area.
+- */
+- local_flush_tlb();
+-
+ /*
+ * Paranoid: Set warm reset code and vector here back
+ * to default values.
+diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
+index 020248f2cec4..e78c6783a2de 100644
+--- a/arch/x86/kernel/traps.c
++++ b/arch/x86/kernel/traps.c
+@@ -175,7 +175,7 @@ void ist_begin_non_atomic(struct pt_regs *regs)
+ * from double_fault.
+ */
+ BUG_ON((unsigned long)(current_top_of_stack() -
+- current_stack_pointer()) >= THREAD_SIZE);
++ current_stack_pointer) >= THREAD_SIZE);
+
+ preempt_count_sub(HARDIRQ_OFFSET);
+ }
+diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c
+index fc9db6ef2a95..e0ae0a8ad5bd 100644
+--- a/arch/x86/kernel/vm86_32.c
++++ b/arch/x86/kernel/vm86_32.c
+@@ -194,7 +194,7 @@ static void mark_screen_rdonly(struct mm_struct *mm)
+ pte_unmap_unlock(pte, ptl);
+ out:
+ up_write(&mm->mmap_sem);
+- flush_tlb();
++ flush_tlb_mm_range(mm, 0xA0000, 0xA0000 + 32*PAGE_SIZE, 0UL);
+ }
+
+
+diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
+index 413a7bf9efbb..64c1920515ea 100644
+--- a/arch/x86/kvm/Kconfig
++++ b/arch/x86/kvm/Kconfig
+@@ -22,7 +22,7 @@ config KVM
+ depends on HAVE_KVM
+ depends on HIGH_RES_TIMERS
+ # for TASKSTATS/TASK_DELAY_ACCT:
+- depends on NET
++ depends on NET && MULTIUSER
+ select PREEMPT_NOTIFIERS
+ select MMU_NOTIFIER
+ select ANON_INODES
+diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
+index d877a59f8de8..dd49efe915e1 100644
+--- a/arch/x86/kvm/emulate.c
++++ b/arch/x86/kvm/emulate.c
+@@ -4480,6 +4480,8 @@ int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
+ bool op_prefix = false;
+ bool has_seg_override = false;
+ struct opcode opcode;
++ u16 dummy;
++ struct desc_struct desc;
+
+ ctxt->memop.type = OP_NONE;
+ ctxt->memopp = NULL;
+@@ -4498,6 +4500,11 @@ int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
+ switch (mode) {
+ case X86EMUL_MODE_REAL:
+ case X86EMUL_MODE_VM86:
++ def_op_bytes = def_ad_bytes = 2;
++ ctxt->ops->get_segment(ctxt, &dummy, &desc, NULL, VCPU_SREG_CS);
++ if (desc.d)
++ def_op_bytes = def_ad_bytes = 4;
++ break;
+ case X86EMUL_MODE_PROT16:
+ def_op_bytes = def_ad_bytes = 2;
+ break;
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index c5ecf85227e0..6b87d8bcdcdd 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -3947,6 +3947,25 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
+ "mov %%r13, %c[r13](%[svm]) \n\t"
+ "mov %%r14, %c[r14](%[svm]) \n\t"
+ "mov %%r15, %c[r15](%[svm]) \n\t"
++#endif
++ /*
++ * Clear host registers marked as clobbered to prevent
++ * speculative use.
++ */
++ "xor %%" _ASM_BX ", %%" _ASM_BX " \n\t"
++ "xor %%" _ASM_CX ", %%" _ASM_CX " \n\t"
++ "xor %%" _ASM_DX ", %%" _ASM_DX " \n\t"
++ "xor %%" _ASM_SI ", %%" _ASM_SI " \n\t"
++ "xor %%" _ASM_DI ", %%" _ASM_DI " \n\t"
++#ifdef CONFIG_X86_64
++ "xor %%r8, %%r8 \n\t"
++ "xor %%r9, %%r9 \n\t"
++ "xor %%r10, %%r10 \n\t"
++ "xor %%r11, %%r11 \n\t"
++ "xor %%r12, %%r12 \n\t"
++ "xor %%r13, %%r13 \n\t"
++ "xor %%r14, %%r14 \n\t"
++ "xor %%r15, %%r15 \n\t"
+ #endif
+ "pop %%" _ASM_BP
+ :
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 84f2825f19b5..ffd5502dd215 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -32,6 +32,7 @@
+ #include <linux/slab.h>
+ #include <linux/tboot.h>
+ #include <linux/hrtimer.h>
++#include <linux/nospec.h>
+ #include "kvm_cache_regs.h"
+ #include "x86.h"
+
+@@ -770,13 +771,18 @@ static const unsigned short vmcs_field_to_offset_table[] = {
+
+ static inline short vmcs_field_to_offset(unsigned long field)
+ {
+- BUILD_BUG_ON(ARRAY_SIZE(vmcs_field_to_offset_table) > SHRT_MAX);
++ const size_t size = ARRAY_SIZE(vmcs_field_to_offset_table);
++ unsigned short offset;
+
+- if (field >= ARRAY_SIZE(vmcs_field_to_offset_table) ||
+- vmcs_field_to_offset_table[field] == 0)
++ BUILD_BUG_ON(size > SHRT_MAX);
++ if (field >= size)
+ return -ENOENT;
+
+- return vmcs_field_to_offset_table[field];
++ field = array_index_nospec(field, size);
++ offset = vmcs_field_to_offset_table[field];
++ if (offset == 0)
++ return -ENOENT;
++ return offset;
+ }
+
+ static inline struct vmcs12 *get_vmcs12(struct kvm_vcpu *vcpu)
+@@ -4356,7 +4362,7 @@ static int vmx_vm_has_apicv(struct kvm *kvm)
+ return enable_apicv && irqchip_in_kernel(kvm);
+ }
+
+-static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
++static void vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
+ {
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+ int max_irr;
+@@ -4367,19 +4373,15 @@ static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
+ vmx->nested.pi_pending) {
+ vmx->nested.pi_pending = false;
+ if (!pi_test_and_clear_on(vmx->nested.pi_desc))
+- return 0;
++ return;
+
+ max_irr = find_last_bit(
+ (unsigned long *)vmx->nested.pi_desc->pir, 256);
+
+ if (max_irr == 256)
+- return 0;
++ return;
+
+ vapic_page = kmap(vmx->nested.virtual_apic_page);
+- if (!vapic_page) {
+- WARN_ON(1);
+- return -ENOMEM;
+- }
+ __kvm_apic_update_irr(vmx->nested.pi_desc->pir, vapic_page);
+ kunmap(vmx->nested.virtual_apic_page);
+
+@@ -4390,7 +4392,6 @@ static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
+ vmcs_write16(GUEST_INTR_STATUS, status);
+ }
+ }
+- return 0;
+ }
+
+ static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu)
+@@ -4412,14 +4413,15 @@ static int vmx_deliver_nested_posted_interrupt(struct kvm_vcpu *vcpu,
+
+ if (is_guest_mode(vcpu) &&
+ vector == vmx->nested.posted_intr_nv) {
+- /* the PIR and ON have been set by L1. */
+- kvm_vcpu_trigger_posted_interrupt(vcpu);
+ /*
+ * If a posted intr is not recognized by hardware,
+ * we will accomplish it in the next vmentry.
+ */
+ vmx->nested.pi_pending = true;
+ kvm_make_request(KVM_REQ_EVENT, vcpu);
++ /* the PIR and ON have been set by L1. */
++ if (!kvm_vcpu_trigger_posted_interrupt(vcpu))
++ kvm_vcpu_kick(vcpu);
+ return 0;
+ }
+ return -1;
+@@ -4762,7 +4764,7 @@ static void vmx_vcpu_reset(struct kvm_vcpu *vcpu)
+ vmcs_writel(GUEST_SYSENTER_ESP, 0);
+ vmcs_writel(GUEST_SYSENTER_EIP, 0);
+
+- vmcs_writel(GUEST_RFLAGS, 0x02);
++ kvm_set_rflags(vcpu, X86_EFLAGS_FIXED);
+ kvm_rip_write(vcpu, 0xfff0);
+
+ vmcs_writel(GUEST_GDTR_BASE, 0);
+@@ -5921,7 +5923,7 @@ static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
+ if (test_bit(KVM_REQ_EVENT, &vcpu->requests))
+ return 1;
+
+- err = emulate_instruction(vcpu, EMULTYPE_NO_REEXECUTE);
++ err = emulate_instruction(vcpu, 0);
+
+ if (err == EMULATE_USER_EXIT) {
+ ++vcpu->stat.mmio_exits;
+@@ -8252,6 +8254,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
+ /* Save guest registers, load host registers, keep flags */
+ "mov %0, %c[wordsize](%%" _ASM_SP ") \n\t"
+ "pop %0 \n\t"
++ "setbe %c[fail](%0)\n\t"
+ "mov %%" _ASM_AX ", %c[rax](%0) \n\t"
+ "mov %%" _ASM_BX ", %c[rbx](%0) \n\t"
+ __ASM_SIZE(pop) " %c[rcx](%0) \n\t"
+@@ -8268,12 +8271,23 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
+ "mov %%r13, %c[r13](%0) \n\t"
+ "mov %%r14, %c[r14](%0) \n\t"
+ "mov %%r15, %c[r15](%0) \n\t"
++ "xor %%r8d, %%r8d \n\t"
++ "xor %%r9d, %%r9d \n\t"
++ "xor %%r10d, %%r10d \n\t"
++ "xor %%r11d, %%r11d \n\t"
++ "xor %%r12d, %%r12d \n\t"
++ "xor %%r13d, %%r13d \n\t"
++ "xor %%r14d, %%r14d \n\t"
++ "xor %%r15d, %%r15d \n\t"
+ #endif
+ "mov %%cr2, %%" _ASM_AX " \n\t"
+ "mov %%" _ASM_AX ", %c[cr2](%0) \n\t"
+
++ "xor %%eax, %%eax \n\t"
++ "xor %%ebx, %%ebx \n\t"
++ "xor %%esi, %%esi \n\t"
++ "xor %%edi, %%edi \n\t"
+ "pop %%" _ASM_BP "; pop %%" _ASM_DX " \n\t"
+- "setbe %c[fail](%0) \n\t"
+ ".pushsection .rodata \n\t"
+ ".global vmx_return \n\t"
+ "vmx_return: " _ASM_PTR " 2b \n\t"
+@@ -8806,11 +8820,6 @@ static inline bool nested_vmx_merge_msr_bitmap(struct kvm_vcpu *vcpu,
+ return false;
+ }
+ msr_bitmap = (unsigned long *)kmap(page);
+- if (!msr_bitmap) {
+- nested_release_page_clean(page);
+- WARN_ON(1);
+- return false;
+- }
+
+ if (nested_cpu_has_virt_x2apic_mode(vmcs12)) {
+ if (nested_cpu_has_apic_reg_virt(vmcs12))
+@@ -9720,7 +9729,8 @@ static int vmx_check_nested_events(struct kvm_vcpu *vcpu, bool external_intr)
+ return 0;
+ }
+
+- return vmx_complete_nested_posted_interrupt(vcpu);
++ vmx_complete_nested_posted_interrupt(vcpu);
++ return 0;
+ }
+
+ static u32 vmx_get_preemption_timer_value(struct kvm_vcpu *vcpu)
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index e4e7d45fd551..e05cb66b575b 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -4188,7 +4188,7 @@ static int vcpu_mmio_read(struct kvm_vcpu *vcpu, gpa_t addr, int len, void *v)
+ addr, n, v))
+ && kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, n, v))
+ break;
+- trace_kvm_mmio(KVM_TRACE_MMIO_READ, n, addr, *(u64 *)v);
++ trace_kvm_mmio(KVM_TRACE_MMIO_READ, n, addr, v);
+ handled += n;
+ addr += n;
+ len -= n;
+@@ -4427,7 +4427,7 @@ static int read_prepare(struct kvm_vcpu *vcpu, void *val, int bytes)
+ {
+ if (vcpu->mmio_read_completed) {
+ trace_kvm_mmio(KVM_TRACE_MMIO_READ, bytes,
+- vcpu->mmio_fragments[0].gpa, *(u64 *)val);
++ vcpu->mmio_fragments[0].gpa, val);
+ vcpu->mmio_read_completed = 0;
+ return 1;
+ }
+@@ -4449,14 +4449,14 @@ static int write_emulate(struct kvm_vcpu *vcpu, gpa_t gpa,
+
+ static int write_mmio(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes, void *val)
+ {
+- trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, bytes, gpa, *(u64 *)val);
++ trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, bytes, gpa, val);
+ return vcpu_mmio_write(vcpu, gpa, bytes, val);
+ }
+
+ static int read_exit_mmio(struct kvm_vcpu *vcpu, gpa_t gpa,
+ void *val, int bytes)
+ {
+- trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, bytes, gpa, 0);
++ trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, bytes, gpa, NULL);
+ return X86EMUL_IO_NEEDED;
+ }
+
+@@ -5187,7 +5187,7 @@ static int handle_emulation_failure(struct kvm_vcpu *vcpu)
+ vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
+ vcpu->run->internal.ndata = 0;
+- r = EMULATE_FAIL;
++ r = EMULATE_USER_EXIT;
+ }
+ kvm_queue_exception(vcpu, UD_VECTOR);
+
+@@ -6737,7 +6737,7 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
+ #endif
+
+ kvm_rip_write(vcpu, regs->rip);
+- kvm_set_rflags(vcpu, regs->rflags);
++ kvm_set_rflags(vcpu, regs->rflags | X86_EFLAGS_FIXED);
+
+ vcpu->arch.exception.pending = false;
+
+@@ -7927,6 +7927,13 @@ static int apf_put_user(struct kvm_vcpu *vcpu, u32 val)
+ sizeof(val));
+ }
+
++static int apf_get_user(struct kvm_vcpu *vcpu, u32 *val)
++{
++
++ return kvm_read_guest_cached(vcpu->kvm, &vcpu->arch.apf.data, val,
++ sizeof(u32));
++}
++
+ void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
+ struct kvm_async_pf *work)
+ {
+@@ -7953,21 +7960,32 @@ void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
+ struct kvm_async_pf *work)
+ {
+ struct x86_exception fault;
++ u32 val;
+
+- trace_kvm_async_pf_ready(work->arch.token, work->gva);
+ if (work->wakeup_all)
+ work->arch.token = ~0; /* broadcast wakeup */
+ else
+ kvm_del_async_pf_gfn(vcpu, work->arch.gfn);
++ trace_kvm_async_pf_ready(work->arch.token, work->gva);
+
+- if ((vcpu->arch.apf.msr_val & KVM_ASYNC_PF_ENABLED) &&
+- !apf_put_user(vcpu, KVM_PV_REASON_PAGE_READY)) {
+- fault.vector = PF_VECTOR;
+- fault.error_code_valid = true;
+- fault.error_code = 0;
+- fault.nested_page_fault = false;
+- fault.address = work->arch.token;
+- kvm_inject_page_fault(vcpu, &fault);
++ if (vcpu->arch.apf.msr_val & KVM_ASYNC_PF_ENABLED &&
++ !apf_get_user(vcpu, &val)) {
++ if (val == KVM_PV_REASON_PAGE_NOT_PRESENT &&
++ vcpu->arch.exception.pending &&
++ vcpu->arch.exception.nr == PF_VECTOR &&
++ !apf_put_user(vcpu, 0)) {
++ vcpu->arch.exception.pending = false;
++ vcpu->arch.exception.nr = 0;
++ vcpu->arch.exception.has_error_code = false;
++ vcpu->arch.exception.error_code = 0;
++ } else if (!apf_put_user(vcpu, KVM_PV_REASON_PAGE_READY)) {
++ fault.vector = PF_VECTOR;
++ fault.error_code_valid = true;
++ fault.error_code = 0;
++ fault.nested_page_fault = false;
++ fault.address = work->arch.token;
++ kvm_inject_page_fault(vcpu, &fault);
++ }
+ }
+ vcpu->arch.apf.halted = false;
+ vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
+diff --git a/arch/x86/lib/checksum_32.S b/arch/x86/lib/checksum_32.S
+index 9bc944a91274..b7518368492a 100644
+--- a/arch/x86/lib/checksum_32.S
++++ b/arch/x86/lib/checksum_32.S
+@@ -29,7 +29,8 @@
+ #include <asm/dwarf2.h>
+ #include <asm/errno.h>
+ #include <asm/asm.h>
+-
++#include <asm/nospec-branch.h>
++
+ /*
+ * computes a partial checksum, e.g. for TCP/UDP fragments
+ */
+@@ -159,7 +160,7 @@ ENTRY(csum_partial)
+ negl %ebx
+ lea 45f(%ebx,%ebx,2), %ebx
+ testl %esi, %esi
+- jmp *%ebx
++ JMP_NOSPEC %ebx
+
+ # Handle 2-byte-aligned regions
+ 20: addw (%esi), %ax
+@@ -446,7 +447,7 @@ ENTRY(csum_partial_copy_generic)
+ andl $-32,%edx
+ lea 3f(%ebx,%ebx), %ebx
+ testl %esi, %esi
+- jmp *%ebx
++ JMP_NOSPEC %ebx
+ 1: addl $64,%esi
+ addl $64,%edi
+ SRC(movb -32(%edx),%bl) ; SRC(movb (%edx),%bl)
+diff --git a/arch/x86/lib/cmdline.c b/arch/x86/lib/cmdline.c
+index 422db000d727..a744506856b1 100644
+--- a/arch/x86/lib/cmdline.c
++++ b/arch/x86/lib/cmdline.c
+@@ -82,3 +82,108 @@ int cmdline_find_option_bool(const char *cmdline, const char *option)
+
+ return 0; /* Buffer overrun */
+ }
++
++/*
++ * Find a non-boolean option (i.e. option=argument). In accordance with
++ * standard Linux practice, if this option is repeated, this returns the
++ * last instance on the command line.
++ *
++ * @cmdline: the cmdline string
++ * @max_cmdline_size: the maximum size of cmdline
++ * @option: option string to look for
++ * @buffer: memory buffer to return the option argument
++ * @bufsize: size of the supplied memory buffer
++ *
++ * Returns the length of the argument (regardless of if it was
++ * truncated to fit in the buffer), or -1 on not found.
++ */
++static int
++__cmdline_find_option(const char *cmdline, int max_cmdline_size,
++ const char *option, char *buffer, int bufsize)
++{
++ char c;
++ int pos = 0, len = -1;
++ const char *opptr = NULL;
++ char *bufptr = buffer;
++ enum {
++ st_wordstart = 0, /* Start of word/after whitespace */
++ st_wordcmp, /* Comparing this word */
++ st_wordskip, /* Miscompare, skip */
++ st_bufcpy, /* Copying this to buffer */
++ } state = st_wordstart;
++
++ if (!cmdline)
++ return -1; /* No command line */
++
++ /*
++ * This 'pos' check ensures we do not overrun
++ * a non-NULL-terminated 'cmdline'
++ */
++ while (pos++ < max_cmdline_size) {
++ c = *(char *)cmdline++;
++ if (!c)
++ break;
++
++ switch (state) {
++ case st_wordstart:
++ if (myisspace(c))
++ break;
++
++ state = st_wordcmp;
++ opptr = option;
++ /* fall through */
++
++ case st_wordcmp:
++ if ((c == '=') && !*opptr) {
++ /*
++ * We matched all the way to the end of the
++ * option we were looking for, prepare to
++ * copy the argument.
++ */
++ len = 0;
++ bufptr = buffer;
++ state = st_bufcpy;
++ break;
++ } else if (c == *opptr++) {
++ /*
++ * We are currently matching, so continue
++ * to the next character on the cmdline.
++ */
++ break;
++ }
++ state = st_wordskip;
++ /* fall through */
++
++ case st_wordskip:
++ if (myisspace(c))
++ state = st_wordstart;
++ break;
++
++ case st_bufcpy:
++ if (myisspace(c)) {
++ state = st_wordstart;
++ } else {
++ /*
++ * Increment len, but don't overrun the
++ * supplied buffer and leave room for the
++ * NULL terminator.
++ */
++ if (++len < bufsize)
++ *bufptr++ = c;
++ }
++ break;
++ }
++ }
++
++ if (bufsize)
++ *bufptr = '\0';
++
++ return len;
++}
++
++int cmdline_find_option(const char *cmdline, const char *option, char *buffer,
++ int bufsize)
++{
++ return __cmdline_find_option(cmdline, COMMAND_LINE_SIZE, option,
++ buffer, bufsize);
++}
+diff --git a/arch/x86/lib/getuser.S b/arch/x86/lib/getuser.S
+index a4512359656a..3917307fca99 100644
+--- a/arch/x86/lib/getuser.S
++++ b/arch/x86/lib/getuser.S
+@@ -40,6 +40,8 @@ ENTRY(__get_user_1)
+ GET_THREAD_INFO(%_ASM_DX)
+ cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
+ jae bad_get_user
++ sbb %_ASM_DX, %_ASM_DX /* array_index_mask_nospec() */
++ and %_ASM_DX, %_ASM_AX
+ ASM_STAC
+ 1: movzbl (%_ASM_AX),%edx
+ xor %eax,%eax
+@@ -55,6 +57,8 @@ ENTRY(__get_user_2)
+ GET_THREAD_INFO(%_ASM_DX)
+ cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
+ jae bad_get_user
++ sbb %_ASM_DX, %_ASM_DX /* array_index_mask_nospec() */
++ and %_ASM_DX, %_ASM_AX
+ ASM_STAC
+ 2: movzwl -1(%_ASM_AX),%edx
+ xor %eax,%eax
+@@ -70,6 +74,8 @@ ENTRY(__get_user_4)
+ GET_THREAD_INFO(%_ASM_DX)
+ cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
+ jae bad_get_user
++ sbb %_ASM_DX, %_ASM_DX /* array_index_mask_nospec() */
++ and %_ASM_DX, %_ASM_AX
+ ASM_STAC
+ 3: movl -3(%_ASM_AX),%edx
+ xor %eax,%eax
+@@ -86,6 +92,8 @@ ENTRY(__get_user_8)
+ GET_THREAD_INFO(%_ASM_DX)
+ cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
+ jae bad_get_user
++ sbb %_ASM_DX, %_ASM_DX /* array_index_mask_nospec() */
++ and %_ASM_DX, %_ASM_AX
+ ASM_STAC
+ 4: movq -7(%_ASM_AX),%rdx
+ xor %eax,%eax
+@@ -97,6 +105,8 @@ ENTRY(__get_user_8)
+ GET_THREAD_INFO(%_ASM_DX)
+ cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
+ jae bad_get_user_8
++ sbb %_ASM_DX, %_ASM_DX /* array_index_mask_nospec() */
++ and %_ASM_DX, %_ASM_AX
+ ASM_STAC
+ 4: movl -7(%_ASM_AX),%edx
+ 5: movl -3(%_ASM_AX),%ecx
+diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile
+index a482d105172b..d893640d5c68 100644
+--- a/arch/x86/mm/Makefile
++++ b/arch/x86/mm/Makefile
+@@ -1,5 +1,5 @@
+ obj-y := init.o init_$(BITS).o fault.o ioremap.o extable.o pageattr.o mmap.o \
+- pat.o pgtable.o physaddr.o gup.o setup_nx.o
++ pat.o pgtable.o physaddr.o gup.o setup_nx.o tlb.o
+
+ # Make sure __phys_addr has no stackprotector
+ nostackp := $(call cc-option, -fno-stack-protector)
+@@ -9,7 +9,6 @@ CFLAGS_setup_nx.o := $(nostackp)
+ CFLAGS_fault.o := -I$(src)/../include/asm/trace
+
+ obj-$(CONFIG_X86_PAT) += pat_rbtree.o
+-obj-$(CONFIG_SMP) += tlb.o
+
+ obj-$(CONFIG_X86_32) += pgtable_32.o iomap_32.o
+
+diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
+index 3e1bb1c8daea..6fae65ea51d6 100644
+--- a/arch/x86/mm/init.c
++++ b/arch/x86/mm/init.c
+@@ -758,7 +758,7 @@ DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate) = {
+ #endif
+ .cr4 = ~0UL, /* fail hard if we screw up cr4 shadow initialization */
+ };
+-EXPORT_SYMBOL_GPL(cpu_tlbstate);
++EXPORT_PER_CPU_SYMBOL(cpu_tlbstate);
+
+ void update_cache_mode_entry(unsigned entry, enum page_cache_mode cache)
+ {
+diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
+index 70e7444c6835..5f3e167daefd 100644
+--- a/arch/x86/mm/ioremap.c
++++ b/arch/x86/mm/ioremap.c
+@@ -304,11 +304,11 @@ void iounmap(volatile void __iomem *addr)
+ (void __force *)addr < phys_to_virt(ISA_END_ADDRESS))
+ return;
+
++ mmiotrace_iounmap(addr);
++
+ addr = (volatile void __iomem *)
+ (PAGE_MASK & (unsigned long __force)addr);
+
+- mmiotrace_iounmap(addr);
+-
+ /* Use the vm area unlocked, assuming the caller
+ ensures there isn't another iounmap for the same address
+ in parallel. Reuse of the virtual address is prevented by
+diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c
+index ddb2244b06a1..76604c8a2a48 100644
+--- a/arch/x86/mm/kmmio.c
++++ b/arch/x86/mm/kmmio.c
+@@ -434,17 +434,18 @@ int register_kmmio_probe(struct kmmio_probe *p)
+ unsigned long flags;
+ int ret = 0;
+ unsigned long size = 0;
++ unsigned long addr = p->addr & PAGE_MASK;
+ const unsigned long size_lim = p->len + (p->addr & ~PAGE_MASK);
+ unsigned int l;
+ pte_t *pte;
+
+ spin_lock_irqsave(&kmmio_lock, flags);
+- if (get_kmmio_probe(p->addr)) {
++ if (get_kmmio_probe(addr)) {
+ ret = -EEXIST;
+ goto out;
+ }
+
+- pte = lookup_address(p->addr, &l);
++ pte = lookup_address(addr, &l);
+ if (!pte) {
+ ret = -EINVAL;
+ goto out;
+@@ -453,7 +454,7 @@ int register_kmmio_probe(struct kmmio_probe *p)
+ kmmio_count++;
+ list_add_rcu(&p->list, &kmmio_probes);
+ while (size < size_lim) {
+- if (add_kmmio_fault_page(p->addr + size))
++ if (add_kmmio_fault_page(addr + size))
+ pr_err("Unable to set page fault.\n");
+ size += page_level_size(l);
+ }
+@@ -527,19 +528,20 @@ void unregister_kmmio_probe(struct kmmio_probe *p)
+ {
+ unsigned long flags;
+ unsigned long size = 0;
++ unsigned long addr = p->addr & PAGE_MASK;
+ const unsigned long size_lim = p->len + (p->addr & ~PAGE_MASK);
+ struct kmmio_fault_page *release_list = NULL;
+ struct kmmio_delayed_release *drelease;
+ unsigned int l;
+ pte_t *pte;
+
+- pte = lookup_address(p->addr, &l);
++ pte = lookup_address(addr, &l);
+ if (!pte)
+ return;
+
+ spin_lock_irqsave(&kmmio_lock, flags);
+ while (size < size_lim) {
+- release_kmmio_fault_page(p->addr + size, &release_list);
++ release_kmmio_fault_page(addr + size, &release_list);
+ size += page_level_size(l);
+ }
+ list_del_rcu(&p->list);
+diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
+index 061e0114005e..cd6e3339b19e 100644
+--- a/arch/x86/mm/tlb.c
++++ b/arch/x86/mm/tlb.c
+@@ -28,6 +28,8 @@
+ * Implement flush IPI by CALL_FUNCTION_VECTOR, Alex Shi
+ */
+
++#ifdef CONFIG_SMP
++
+ struct flush_tlb_info {
+ struct mm_struct *flush_mm;
+ unsigned long flush_start;
+@@ -153,23 +155,6 @@ void native_flush_tlb_others(const struct cpumask *cpumask,
+ smp_call_function_many(cpumask, flush_tlb_func, &info, 1);
+ }
+
+-void flush_tlb_current_task(void)
+-{
+- struct mm_struct *mm = current->mm;
+-
+- preempt_disable();
+-
+- count_vm_tlb_event(NR_TLB_LOCAL_FLUSH_ALL);
+-
+- /* This is an implicit full barrier that synchronizes with switch_mm. */
+- local_flush_tlb();
+-
+- trace_tlb_flush(TLB_LOCAL_SHOOTDOWN, TLB_FLUSH_ALL);
+- if (cpumask_any_but(mm_cpumask(mm), smp_processor_id()) < nr_cpu_ids)
+- flush_tlb_others(mm_cpumask(mm), mm, 0UL, TLB_FLUSH_ALL);
+- preempt_enable();
+-}
+-
+ /*
+ * See Documentation/x86/tlb.txt for details. We choose 33
+ * because it is large enough to cover the vast majority (at
+@@ -190,6 +175,12 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
+ unsigned long base_pages_to_flush = TLB_FLUSH_ALL;
+
+ preempt_disable();
++
++ if ((end != TLB_FLUSH_ALL) && !(vmflag & VM_HUGETLB))
++ base_pages_to_flush = (end - start) >> PAGE_SHIFT;
++ if (base_pages_to_flush > tlb_single_page_flush_ceiling)
++ base_pages_to_flush = TLB_FLUSH_ALL;
++
+ if (current->active_mm != mm) {
+ /* Synchronize with switch_mm. */
+ smp_mb();
+@@ -206,15 +197,11 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
+ goto out;
+ }
+
+- if ((end != TLB_FLUSH_ALL) && !(vmflag & VM_HUGETLB))
+- base_pages_to_flush = (end - start) >> PAGE_SHIFT;
+-
+ /*
+ * Both branches below are implicit full barriers (MOV to CR or
+ * INVLPG) that synchronize with switch_mm.
+ */
+- if (base_pages_to_flush > tlb_single_page_flush_ceiling) {
+- base_pages_to_flush = TLB_FLUSH_ALL;
++ if (base_pages_to_flush == TLB_FLUSH_ALL) {
+ count_vm_tlb_event(NR_TLB_LOCAL_FLUSH_ALL);
+ local_flush_tlb();
+ } else {
+@@ -346,3 +333,5 @@ static int __init create_tlb_single_page_flush_ceiling(void)
+ return 0;
+ }
+ late_initcall(create_tlb_single_page_flush_ceiling);
++
++#endif /* CONFIG_SMP */
+diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
+index 1d2e6392f5fa..f24bd7249536 100644
+--- a/arch/x86/oprofile/nmi_int.c
++++ b/arch/x86/oprofile/nmi_int.c
+@@ -471,7 +471,7 @@ static int nmi_setup(void)
+ goto fail;
+
+ for_each_possible_cpu(cpu) {
+- if (!cpu)
++ if (!IS_ENABLED(CONFIG_SMP) || !cpu)
+ continue;
+
+ memcpy(per_cpu(cpu_msrs, cpu).counters,
+diff --git a/arch/x86/platform/olpc/olpc-xo15-sci.c b/arch/x86/platform/olpc/olpc-xo15-sci.c
+index 55130846ac87..c0533fbc39e3 100644
+--- a/arch/x86/platform/olpc/olpc-xo15-sci.c
++++ b/arch/x86/platform/olpc/olpc-xo15-sci.c
+@@ -196,6 +196,7 @@ static int xo15_sci_remove(struct acpi_device *device)
+ return 0;
+ }
+
++#ifdef CONFIG_PM_SLEEP
+ static int xo15_sci_resume(struct device *dev)
+ {
+ /* Enable all EC events */
+@@ -207,6 +208,7 @@ static int xo15_sci_resume(struct device *dev)
+
+ return 0;
+ }
++#endif
+
+ static SIMPLE_DEV_PM_OPS(xo15_sci_pm, NULL, xo15_sci_resume);
+
+diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
+index 1ecae556d4ed..809730c09e2b 100644
+--- a/arch/x86/xen/enlighten.c
++++ b/arch/x86/xen/enlighten.c
+@@ -432,6 +432,12 @@ static void __init xen_init_cpuid_mask(void)
+ ~((1 << X86_FEATURE_MTRR) | /* disable MTRR */
+ (1 << X86_FEATURE_ACC)); /* thermal monitoring */
+
++ /*
++ * Xen PV would need some work to support PCID: CR3 handling as well
++ * as xen_flush_tlb_others() would need updating.
++ */
++ cpuid_leaf1_ecx_mask &= ~(1 << (X86_FEATURE_PCID % 32)); /* disable PCID */
++
+ if (!xen_initial_domain())
+ cpuid_leaf1_edx_mask &=
+ ~((1 << X86_FEATURE_ACPI)); /* disable ACPI */
+diff --git a/arch/xtensa/include/asm/futex.h b/arch/xtensa/include/asm/futex.h
+index b39531babec0..72bfc1cbc2b5 100644
+--- a/arch/xtensa/include/asm/futex.h
++++ b/arch/xtensa/include/asm/futex.h
+@@ -109,7 +109,6 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
+ u32 oldval, u32 newval)
+ {
+ int ret = 0;
+- u32 prev;
+
+ if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ return -EFAULT;
+@@ -120,26 +119,24 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
+
+ __asm__ __volatile__ (
+ " # futex_atomic_cmpxchg_inatomic\n"
+- "1: l32i %1, %3, 0\n"
+- " mov %0, %5\n"
+- " wsr %1, scompare1\n"
+- "2: s32c1i %0, %3, 0\n"
+- "3:\n"
++ " wsr %5, scompare1\n"
++ "1: s32c1i %1, %4, 0\n"
++ " s32i %1, %6, 0\n"
++ "2:\n"
+ " .section .fixup,\"ax\"\n"
+ " .align 4\n"
+- "4: .long 3b\n"
+- "5: l32r %1, 4b\n"
+- " movi %0, %6\n"
++ "3: .long 2b\n"
++ "4: l32r %1, 3b\n"
++ " movi %0, %7\n"
+ " jx %1\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .long 1b,5b,2b,5b\n"
++ " .long 1b,4b\n"
+ " .previous\n"
+- : "+r" (ret), "=&r" (prev), "+m" (*uaddr)
+- : "r" (uaddr), "r" (oldval), "r" (newval), "I" (-EFAULT)
++ : "+r" (ret), "+r" (newval), "+m" (*uaddr), "+m" (*uval)
++ : "r" (uaddr), "r" (oldval), "r" (uval), "I" (-EFAULT)
+ : "memory");
+
+- *uval = prev;
+ return ret;
+ }
+
+diff --git a/block/bio.c b/block/bio.c
+index d9cf77c6a847..f90b2abe2fa7 100644
+--- a/block/bio.c
++++ b/block/bio.c
+@@ -1290,6 +1290,7 @@ struct bio *bio_map_user_iov(struct request_queue *q,
+ int ret, offset;
+ struct iov_iter i;
+ struct iovec iov;
++ struct bio_vec *bvec;
+
+ iov_for_each(iov, i, *iter) {
+ unsigned long uaddr = (unsigned long) iov.iov_base;
+@@ -1334,7 +1335,12 @@ struct bio *bio_map_user_iov(struct request_queue *q,
+ ret = get_user_pages_fast(uaddr, local_nr_pages,
+ (iter->type & WRITE) != WRITE,
+ &pages[cur_page]);
+- if (ret < local_nr_pages) {
++ if (unlikely(ret < local_nr_pages)) {
++ for (j = cur_page; j < page_limit; j++) {
++ if (!pages[j])
++ break;
++ put_page(pages[j]);
++ }
+ ret = -EFAULT;
+ goto out_unmap;
+ }
+@@ -1396,10 +1402,8 @@ struct bio *bio_map_user_iov(struct request_queue *q,
+ return bio;
+
+ out_unmap:
+- for (j = 0; j < nr_pages; j++) {
+- if (!pages[j])
+- break;
+- page_cache_release(pages[j]);
++ bio_for_each_segment_all(bvec, bio, j) {
++ put_page(bvec->bv_page);
+ }
+ out:
+ kfree(pages);
+diff --git a/crypto/ahash.c b/crypto/ahash.c
+index f9caf0f74199..7006dbfd39bd 100644
+--- a/crypto/ahash.c
++++ b/crypto/ahash.c
+@@ -637,5 +637,16 @@ struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask)
+ }
+ EXPORT_SYMBOL_GPL(ahash_attr_alg);
+
++bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg)
++{
++ struct crypto_alg *alg = &halg->base;
++
++ if (alg->cra_type != &crypto_ahash_type)
++ return crypto_shash_alg_has_setkey(__crypto_shash_alg(alg));
++
++ return __crypto_ahash_alg(alg)->setkey != NULL;
++}
++EXPORT_SYMBOL_GPL(crypto_hash_alg_has_setkey);
++
+ MODULE_LICENSE("GPL");
+ MODULE_DESCRIPTION("Asynchronous cryptographic hash type");
+diff --git a/crypto/algapi.c b/crypto/algapi.c
+index 4e69f3161888..35f5efb2ecff 100644
+--- a/crypto/algapi.c
++++ b/crypto/algapi.c
+@@ -160,6 +160,18 @@ void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
+
+ spawn->alg = NULL;
+ spawns = &inst->alg.cra_users;
++
++ /*
++ * We may encounter an unregistered instance here, since
++ * an instance's spawns are set up prior to the instance
++ * being registered. An unregistered instance will have
++ * NULL ->cra_users.next, since ->cra_users isn't
++ * properly initialized until registration. But an
++ * unregistered instance cannot have any users, so treat
++ * it the same as ->cra_users being empty.
++ */
++ if (spawns->next == NULL)
++ break;
+ }
+ } while ((spawns = crypto_more_spawns(alg, &stack, &top,
+ &secondary_spawns)));
+diff --git a/crypto/cryptd.c b/crypto/cryptd.c
+index 66c9e8262572..4e76f1db3e68 100644
+--- a/crypto/cryptd.c
++++ b/crypto/cryptd.c
+@@ -645,7 +645,8 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
+ inst->alg.finup = cryptd_hash_finup_enqueue;
+ inst->alg.export = cryptd_hash_export;
+ inst->alg.import = cryptd_hash_import;
+- inst->alg.setkey = cryptd_hash_setkey;
++ if (crypto_shash_alg_has_setkey(salg))
++ inst->alg.setkey = cryptd_hash_setkey;
+ inst->alg.digest = cryptd_hash_digest_enqueue;
+
+ err = ahash_register_instance(tmpl, inst);
+diff --git a/crypto/mcryptd.c b/crypto/mcryptd.c
+index cfb68a889ef6..cbe0135839df 100644
+--- a/crypto/mcryptd.c
++++ b/crypto/mcryptd.c
+@@ -80,6 +80,7 @@ static int mcryptd_init_queue(struct mcryptd_queue *queue,
+ pr_debug("cpu_queue #%d %p\n", cpu, queue->cpu_queue);
+ crypto_init_queue(&cpu_queue->queue, max_cpu_qlen);
+ INIT_WORK(&cpu_queue->work, mcryptd_queue_worker);
++ spin_lock_init(&cpu_queue->q_lock);
+ }
+ return 0;
+ }
+@@ -103,15 +104,16 @@ static int mcryptd_enqueue_request(struct mcryptd_queue *queue,
+ int cpu, err;
+ struct mcryptd_cpu_queue *cpu_queue;
+
+- cpu = get_cpu();
+- cpu_queue = this_cpu_ptr(queue->cpu_queue);
+- rctx->tag.cpu = cpu;
++ cpu_queue = raw_cpu_ptr(queue->cpu_queue);
++ spin_lock(&cpu_queue->q_lock);
++ cpu = smp_processor_id();
++ rctx->tag.cpu = smp_processor_id();
+
+ err = crypto_enqueue_request(&cpu_queue->queue, request);
+ pr_debug("enqueue request: cpu %d cpu_queue %p request %p\n",
+ cpu, cpu_queue, request);
++ spin_unlock(&cpu_queue->q_lock);
+ queue_work_on(cpu, kcrypto_wq, &cpu_queue->work);
+- put_cpu();
+
+ return err;
+ }
+@@ -164,16 +166,11 @@ static void mcryptd_queue_worker(struct work_struct *work)
+ cpu_queue = container_of(work, struct mcryptd_cpu_queue, work);
+ i = 0;
+ while (i < MCRYPTD_BATCH || single_task_running()) {
+- /*
+- * preempt_disable/enable is used to prevent
+- * being preempted by mcryptd_enqueue_request()
+- */
+- local_bh_disable();
+- preempt_disable();
++
++ spin_lock_bh(&cpu_queue->q_lock);
+ backlog = crypto_get_backlog(&cpu_queue->queue);
+ req = crypto_dequeue_request(&cpu_queue->queue);
+- preempt_enable();
+- local_bh_enable();
++ spin_unlock_bh(&cpu_queue->q_lock);
+
+ if (!req) {
+ mcryptd_opportunistic_flush();
+@@ -188,7 +185,7 @@ static void mcryptd_queue_worker(struct work_struct *work)
+ ++i;
+ }
+ if (cpu_queue->queue.qlen)
+- queue_work(kcrypto_wq, &cpu_queue->work);
++ queue_work_on(smp_processor_id(), kcrypto_wq, &cpu_queue->work);
+ }
+
+ void mcryptd_flusher(struct work_struct *__work)
+diff --git a/drivers/Makefile b/drivers/Makefile
+index d7407f0b0d3b..bffce51498df 100644
+--- a/drivers/Makefile
++++ b/drivers/Makefile
+@@ -93,6 +93,7 @@ obj-$(CONFIG_TC) += tc/
+ obj-$(CONFIG_UWB) += uwb/
+ obj-$(CONFIG_USB_PHY) += usb/
+ obj-$(CONFIG_USB) += usb/
++obj-$(CONFIG_USB_SUPPORT) += usb/
+ obj-$(CONFIG_PCI) += usb/
+ obj-$(CONFIG_USB_GADGET) += usb/
+ obj-$(CONFIG_OF) += usb/
+diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
+index 568f2b942aac..0272d53d5bcb 100644
+--- a/drivers/acpi/acpi_processor.c
++++ b/drivers/acpi/acpi_processor.c
+@@ -315,15 +315,6 @@ static int acpi_processor_get_info(struct acpi_device *device)
+ pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
+
+ pr->pblk = object.processor.pblk_address;
+-
+- /*
+- * We don't care about error returns - we just try to mark
+- * these reserved so that nobody else is confused into thinking
+- * that this region might be unused..
+- *
+- * (In particular, allocating the IO range for Cardbus)
+- */
+- request_region(pr->throttling.address, 6, "ACPI CPU throttle");
+ }
+
+ /*
+diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
+index ed65e9c4b5b0..ba4930c0e98c 100644
+--- a/drivers/acpi/apei/erst.c
++++ b/drivers/acpi/apei/erst.c
+@@ -1023,7 +1023,7 @@ skip:
+ /* The record may be cleared by others, try read next record */
+ if (len == -ENOENT)
+ goto skip;
+- else if (len < sizeof(*rcd)) {
++ else if (len < 0 || len < sizeof(*rcd)) {
+ rc = -EIO;
+ goto out;
+ }
+diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
+index 84243c32e29c..f3df4b5e5fc9 100644
+--- a/drivers/acpi/processor_throttling.c
++++ b/drivers/acpi/processor_throttling.c
+@@ -680,6 +680,15 @@ static int acpi_processor_get_throttling_fadt(struct acpi_processor *pr)
+ if (!pr->flags.throttling)
+ return -ENODEV;
+
++ /*
++ * We don't care about error returns - we just try to mark
++ * these reserved so that nobody else is confused into thinking
++ * that this region might be unused..
++ *
++ * (In particular, allocating the IO range for Cardbus)
++ */
++ request_region(pr->throttling.address, 6, "ACPI CPU throttle");
++
+ pr->throttling.state = 0;
+
+ duty_mask = pr->throttling.state_count - 1;
+diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
+index bf034f8b7c1a..030ab2f543df 100644
+--- a/drivers/acpi/sbshc.c
++++ b/drivers/acpi/sbshc.c
+@@ -309,8 +309,8 @@ static int acpi_smbus_hc_add(struct acpi_device *device)
+ device->driver_data = hc;
+
+ acpi_ec_add_query_handler(hc->ec, hc->query_bit, NULL, smbus_alarm, hc);
+- printk(KERN_INFO PREFIX "SBS HC: EC = 0x%p, offset = 0x%0x, query_bit = 0x%0x\n",
+- hc->ec, hc->offset, hc->query_bit);
++ dev_info(&device->dev, "SBS HC: offset = 0x%0x, query_bit = 0x%0x\n",
++ hc->offset, hc->query_bit);
+
+ return 0;
+ }
+diff --git a/drivers/android/binder.c b/drivers/android/binder.c
+index 235ba1fbabdb..b834278c0c4d 100644
+--- a/drivers/android/binder.c
++++ b/drivers/android/binder.c
+@@ -2618,6 +2618,8 @@ static unsigned int binder_poll(struct file *filp,
+ binder_lock(__func__);
+
+ thread = binder_get_thread(proc);
++ if (!thread)
++ return POLLERR;
+
+ wait_for_proc_work = thread->transaction_stack == NULL &&
+ list_empty(&thread->todo) && thread->return_error == BR_OK;
+diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
+index 34825d63d483..3b0cebb2122b 100644
+--- a/drivers/ata/ahci.c
++++ b/drivers/ata/ahci.c
+@@ -388,6 +388,11 @@ static const struct pci_device_id ahci_pci_tbl[] = {
+ { PCI_VDEVICE(INTEL, 0xa20e), board_ahci }, /* Lewisburg RAID*/
+ { PCI_VDEVICE(INTEL, 0xa252), board_ahci }, /* Lewisburg RAID*/
+ { PCI_VDEVICE(INTEL, 0xa256), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa356), board_ahci }, /* Cannon Lake PCH-H RAID */
++ { PCI_VDEVICE(INTEL, 0x0f22), board_ahci }, /* Bay Trail AHCI */
++ { PCI_VDEVICE(INTEL, 0x0f23), board_ahci }, /* Bay Trail AHCI */
++ { PCI_VDEVICE(INTEL, 0x22a3), board_ahci }, /* Cherry Trail AHCI */
++ { PCI_VDEVICE(INTEL, 0x5ae3), board_ahci }, /* Apollo Lake AHCI */
+
+ /* JMicron 360/1/3/5/6, match class to avoid IDE function */
+ { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
+index 4c0dac27882f..b31d6853ba7a 100644
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -4145,6 +4145,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ * https://bugzilla.kernel.org/show_bug.cgi?id=121671
+ */
+ { "LITEON CX1-JB*-HP", NULL, ATA_HORKAGE_MAX_SEC_1024 },
++ { "LITEON EP1-*", NULL, ATA_HORKAGE_MAX_SEC_1024 },
+
+ /* Devices we expect to fail diagnostics */
+
+diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
+index fdba441457ec..3f5fb95b0f4c 100644
+--- a/drivers/base/cacheinfo.c
++++ b/drivers/base/cacheinfo.c
+@@ -106,6 +106,9 @@ static int cache_shared_cpu_map_setup(unsigned int cpu)
+ unsigned int index;
+ int ret;
+
++ if (this_cpu_ci->cpu_map_populated)
++ return 0;
++
+ ret = cache_setup_of_node(cpu);
+ if (ret)
+ return ret;
+diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
+index a311cfa4c5bd..a6975795e7f3 100644
+--- a/drivers/base/power/trace.c
++++ b/drivers/base/power/trace.c
+@@ -166,14 +166,14 @@ void generate_pm_trace(const void *tracedata, unsigned int user)
+ }
+ EXPORT_SYMBOL(generate_pm_trace);
+
+-extern char __tracedata_start, __tracedata_end;
++extern char __tracedata_start[], __tracedata_end[];
+ static int show_file_hash(unsigned int value)
+ {
+ int match;
+ char *tracedata;
+
+ match = 0;
+- for (tracedata = &__tracedata_start ; tracedata < &__tracedata_end ;
++ for (tracedata = __tracedata_start ; tracedata < __tracedata_end ;
+ tracedata += 2 + sizeof(unsigned long)) {
+ unsigned short lineno = *(unsigned short *)tracedata;
+ const char *file = *(const char **)(tracedata + 2);
+diff --git a/drivers/block/loop.c b/drivers/block/loop.c
+index ea0c863861b9..b5dbce192c6b 100644
+--- a/drivers/block/loop.c
++++ b/drivers/block/loop.c
+@@ -1338,9 +1338,8 @@ out:
+ return err;
+ }
+
+-static void lo_release(struct gendisk *disk, fmode_t mode)
++static void __lo_release(struct loop_device *lo)
+ {
+- struct loop_device *lo = disk->private_data;
+ int err;
+
+ mutex_lock(&lo->lo_ctl_mutex);
+@@ -1368,6 +1367,13 @@ out:
+ mutex_unlock(&lo->lo_ctl_mutex);
+ }
+
++static void lo_release(struct gendisk *disk, fmode_t mode)
++{
++ mutex_lock(&loop_index_mutex);
++ __lo_release(disk->private_data);
++ mutex_unlock(&loop_index_mutex);
++}
++
+ static const struct block_device_operations lo_fops = {
+ .owner = THIS_MODULE,
+ .open = lo_open,
+diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
+index 09e628dafd9d..46098d236476 100644
+--- a/drivers/block/pktcdvd.c
++++ b/drivers/block/pktcdvd.c
+@@ -2798,7 +2798,7 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
+ pd->pkt_dev = MKDEV(pktdev_major, idx);
+ ret = pkt_new_dev(pd, dev);
+ if (ret)
+- goto out_new_dev;
++ goto out_mem2;
+
+ /* inherit events of the host device */
+ disk->events = pd->bdev->bd_disk->events;
+@@ -2816,8 +2816,6 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
+ mutex_unlock(&ctl_mutex);
+ return 0;
+
+-out_new_dev:
+- blk_cleanup_queue(disk->queue);
+ out_mem2:
+ put_disk(disk);
+ out_mem:
+diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c
+index 83f6437dd91d..1481a3c9b5af 100644
+--- a/drivers/bluetooth/btsdio.c
++++ b/drivers/bluetooth/btsdio.c
+@@ -31,6 +31,7 @@
+ #include <linux/errno.h>
+ #include <linux/skbuff.h>
+
++#include <linux/mmc/host.h>
+ #include <linux/mmc/sdio_ids.h>
+ #include <linux/mmc/sdio_func.h>
+
+@@ -303,6 +304,14 @@ static int btsdio_probe(struct sdio_func *func,
+ tuple = tuple->next;
+ }
+
++ /* BCM43341 devices soldered onto the PCB (non-removable) use an
++ * uart connection for bluetooth, ignore the BT SDIO interface.
++ */
++ if (func->vendor == SDIO_VENDOR_ID_BROADCOM &&
++ func->device == SDIO_DEVICE_ID_BROADCOM_43341 &&
++ !mmc_card_is_removable(func->card->host))
++ return -ENODEV;
++
+ data = devm_kzalloc(&func->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
+index 5643b65cee20..0ff7682cfb14 100644
+--- a/drivers/char/hw_random/core.c
++++ b/drivers/char/hw_random/core.c
+@@ -238,7 +238,10 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf,
+ goto out;
+ }
+
+- mutex_lock(&reading_mutex);
++ if (mutex_lock_interruptible(&reading_mutex)) {
++ err = -ERESTARTSYS;
++ goto out_put;
++ }
+ if (!data_avail) {
+ bytes_read = rng_get_data(rng, rng_buffer,
+ rng_buffer_size(),
+@@ -288,6 +291,7 @@ out:
+
+ out_unlock_reading:
+ mutex_unlock(&reading_mutex);
++out_put:
+ put_rng(rng);
+ goto out;
+ }
+diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
+index 659879a56dba..949610360b14 100644
+--- a/drivers/cpufreq/Kconfig
++++ b/drivers/cpufreq/Kconfig
+@@ -236,6 +236,7 @@ endif
+ if MIPS
+ config LOONGSON2_CPUFREQ
+ tristate "Loongson2 CPUFreq Driver"
++ depends on LEMOTE_MACH2F
+ help
+ This option adds a CPUFreq driver for loongson processors which
+ support software configurable cpu frequency.
+@@ -248,6 +249,7 @@ config LOONGSON2_CPUFREQ
+
+ config LOONGSON1_CPUFREQ
+ tristate "Loongson1 CPUFreq Driver"
++ depends on LOONGSON1_LS1B
+ help
+ This option adds a CPUFreq driver for loongson1 processors which
+ support software configurable cpu frequency.
+diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
+index 3442764a5293..544e0e330afd 100644
+--- a/drivers/cpuidle/cpuidle-powernv.c
++++ b/drivers/cpuidle/cpuidle-powernv.c
+@@ -153,6 +153,24 @@ static int powernv_cpuidle_driver_init(void)
+ drv->state_count += 1;
+ }
+
++ /*
++ * On the PowerNV platform cpu_present may be less than cpu_possible in
++ * cases when firmware detects the CPU, but it is not available to the
++ * OS. If CONFIG_HOTPLUG_CPU=n, then such CPUs are not hotplugable at
++ * run time and hence cpu_devices are not created for those CPUs by the
++ * generic topology_init().
++ *
++ * drv->cpumask defaults to cpu_possible_mask in
++ * __cpuidle_driver_init(). This breaks cpuidle on PowerNV where
++ * cpu_devices are not created for CPUs in cpu_possible_mask that
++ * cannot be hot-added later at run time.
++ *
++ * Trying cpuidle_register_device() on a CPU without a cpu_device is
++ * incorrect, so pass a correct CPU mask to the generic cpuidle driver.
++ */
++
++ drv->cpumask = (struct cpumask *)cpu_present_mask;
++
+ return 0;
+ }
+
+diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
+index 832a2c3f01ff..9e98a5fbbc1d 100644
+--- a/drivers/cpuidle/sysfs.c
++++ b/drivers/cpuidle/sysfs.c
+@@ -613,6 +613,18 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev)
+ struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
+ int error;
+
++ /*
++ * Return if cpu_device is not setup for this CPU.
++ *
++ * This could happen if the arch did not set up cpu_device
++ * since this CPU is not in cpu_present mask and the
++ * driver did not send a correct CPU mask during registration.
++ * Without this check we would end up passing bogus
++ * value for &cpu_dev->kobj in kobject_init_and_add()
++ */
++ if (!cpu_dev)
++ return -ENODEV;
++
+ kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
+ if (!kdev)
+ return -ENOMEM;
+diff --git a/drivers/crypto/amcc/crypto4xx_core.h b/drivers/crypto/amcc/crypto4xx_core.h
+index bac0bdeb4b5f..b6529b9fcbe2 100644
+--- a/drivers/crypto/amcc/crypto4xx_core.h
++++ b/drivers/crypto/amcc/crypto4xx_core.h
+@@ -32,12 +32,12 @@
+ #define PPC405EX_CE_RESET 0x00000008
+
+ #define CRYPTO4XX_CRYPTO_PRIORITY 300
+-#define PPC4XX_LAST_PD 63
+-#define PPC4XX_NUM_PD 64
+-#define PPC4XX_LAST_GD 1023
++#define PPC4XX_NUM_PD 256
++#define PPC4XX_LAST_PD (PPC4XX_NUM_PD - 1)
+ #define PPC4XX_NUM_GD 1024
+-#define PPC4XX_LAST_SD 63
+-#define PPC4XX_NUM_SD 64
++#define PPC4XX_LAST_GD (PPC4XX_NUM_GD - 1)
++#define PPC4XX_NUM_SD 256
++#define PPC4XX_LAST_SD (PPC4XX_NUM_SD - 1)
+ #define PPC4XX_SD_BUFFER_SIZE 2048
+
+ #define PD_ENTRY_INUSE 1
+diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c
+index 10a9aeff1666..32035daae8c9 100644
+--- a/drivers/crypto/n2_core.c
++++ b/drivers/crypto/n2_core.c
+@@ -1641,6 +1641,7 @@ static int queue_cache_init(void)
+ CWQ_ENTRY_SIZE, 0, NULL);
+ if (!queue_cache[HV_NCS_QTYPE_CWQ - 1]) {
+ kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_MAU - 1]);
++ queue_cache[HV_NCS_QTYPE_MAU - 1] = NULL;
+ return -ENOMEM;
+ }
+ return 0;
+@@ -1650,6 +1651,8 @@ static void queue_cache_destroy(void)
+ {
+ kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_MAU - 1]);
+ kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_CWQ - 1]);
++ queue_cache[HV_NCS_QTYPE_MAU - 1] = NULL;
++ queue_cache[HV_NCS_QTYPE_CWQ - 1] = NULL;
+ }
+
+ static int spu_queue_register(struct spu_queue *p, unsigned long q_type)
+diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
+index 4f0c4a3cc5c5..89219806fd8e 100644
+--- a/drivers/crypto/s5p-sss.c
++++ b/drivers/crypto/s5p-sss.c
+@@ -419,16 +419,21 @@ static void s5p_aes_crypt_start(struct s5p_aes_dev *dev, unsigned long mode)
+ uint32_t aes_control;
+ int err;
+ unsigned long flags;
++ u8 *iv;
+
+ aes_control = SSS_AES_KEY_CHANGE_MODE;
+ if (mode & FLAGS_AES_DECRYPT)
+ aes_control |= SSS_AES_MODE_DECRYPT;
+
+- if ((mode & FLAGS_AES_MODE_MASK) == FLAGS_AES_CBC)
++ if ((mode & FLAGS_AES_MODE_MASK) == FLAGS_AES_CBC) {
+ aes_control |= SSS_AES_CHAIN_MODE_CBC;
+- else if ((mode & FLAGS_AES_MODE_MASK) == FLAGS_AES_CTR)
++ iv = req->info;
++ } else if ((mode & FLAGS_AES_MODE_MASK) == FLAGS_AES_CTR) {
+ aes_control |= SSS_AES_CHAIN_MODE_CTR;
+-
++ iv = req->info;
++ } else {
++ iv = NULL; /* AES_ECB */
++ }
+ if (dev->ctx->keylen == AES_KEYSIZE_192)
+ aes_control |= SSS_AES_KEY_SIZE_192;
+ else if (dev->ctx->keylen == AES_KEYSIZE_256)
+@@ -458,7 +463,7 @@ static void s5p_aes_crypt_start(struct s5p_aes_dev *dev, unsigned long mode)
+ goto outdata_error;
+
+ SSS_AES_WRITE(dev, AES_CONTROL, aes_control);
+- s5p_set_aes(dev, dev->ctx->aes_key, req->info, dev->ctx->keylen);
++ s5p_set_aes(dev, dev->ctx->aes_key, iv, dev->ctx->keylen);
+
+ s5p_set_dma_indata(dev, req->src);
+ s5p_set_dma_outdata(dev, req->dst);
+diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
+index ca1b362d77e2..3373561caae8 100644
+--- a/drivers/devfreq/devfreq.c
++++ b/drivers/devfreq/devfreq.c
+@@ -584,7 +584,7 @@ struct devfreq *devm_devfreq_add_device(struct device *dev,
+ devfreq = devfreq_add_device(dev, profile, governor_name, data);
+ if (IS_ERR(devfreq)) {
+ devres_free(ptr);
+- return ERR_PTR(-ENOMEM);
++ return devfreq;
+ }
+
+ *ptr = devfreq;
+diff --git a/drivers/dma/dma-jz4740.c b/drivers/dma/dma-jz4740.c
+index 7638b24ce8d0..35fc58f4bf4b 100644
+--- a/drivers/dma/dma-jz4740.c
++++ b/drivers/dma/dma-jz4740.c
+@@ -557,7 +557,7 @@ static int jz4740_dma_probe(struct platform_device *pdev)
+
+ ret = dma_async_device_register(dd);
+ if (ret)
+- return ret;
++ goto err_clk;
+
+ irq = platform_get_irq(pdev, 0);
+ ret = request_irq(irq, jz4740_dma_irq, 0, dev_name(&pdev->dev), dmadev);
+@@ -570,6 +570,8 @@ static int jz4740_dma_probe(struct platform_device *pdev)
+
+ err_unregister:
+ dma_async_device_unregister(dd);
++err_clk:
++ clk_disable_unprepare(dmadev->clk);
+ return ret;
+ }
+
+diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
+index 2e9bc49d30ec..5e4fe755a4d8 100644
+--- a/drivers/dma/dmatest.c
++++ b/drivers/dma/dmatest.c
+@@ -329,7 +329,7 @@ static void dmatest_callback(void *arg)
+ {
+ struct dmatest_done *done = arg;
+ struct dmatest_thread *thread =
+- container_of(arg, struct dmatest_thread, done_wait);
++ container_of(done, struct dmatest_thread, test_done);
+ if (!thread->done) {
+ done->done = true;
+ wake_up_all(done->wait);
+diff --git a/drivers/edac/octeon_edac-lmc.c b/drivers/edac/octeon_edac-lmc.c
+index cda6dab5067a..6b65a102b49d 100644
+--- a/drivers/edac/octeon_edac-lmc.c
++++ b/drivers/edac/octeon_edac-lmc.c
+@@ -79,6 +79,7 @@ static void octeon_lmc_edac_poll_o2(struct mem_ctl_info *mci)
+ if (!pvt->inject)
+ int_reg.u64 = cvmx_read_csr(CVMX_LMCX_INT(mci->mc_idx));
+ else {
++ int_reg.u64 = 0;
+ if (pvt->error_type == 1)
+ int_reg.s.sec_err = 1;
+ if (pvt->error_type == 2)
+diff --git a/drivers/gpio/gpio-intel-mid.c b/drivers/gpio/gpio-intel-mid.c
+index 14945fd9d5e1..935fa3bce6d0 100644
+--- a/drivers/gpio/gpio-intel-mid.c
++++ b/drivers/gpio/gpio-intel-mid.c
+@@ -326,7 +326,7 @@ static void intel_mid_irq_init_hw(struct intel_mid_gpio *priv)
+ }
+ }
+
+-static int intel_gpio_runtime_idle(struct device *dev)
++static int __maybe_unused intel_gpio_runtime_idle(struct device *dev)
+ {
+ int err = pm_schedule_suspend(dev, 500);
+ return err ?: -EBUSY;
+diff --git a/drivers/gpio/gpio-iop.c b/drivers/gpio/gpio-iop.c
+index 2ed0237a8baf..304e68633d29 100644
+--- a/drivers/gpio/gpio-iop.c
++++ b/drivers/gpio/gpio-iop.c
+@@ -129,3 +129,7 @@ static int __init iop3xx_gpio_init(void)
+ return platform_driver_register(&iop3xx_gpio_driver);
+ }
+ arch_initcall(iop3xx_gpio_init);
++
++MODULE_DESCRIPTION("GPIO handling for Intel IOP3xx processors");
++MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>");
++MODULE_LICENSE("GPL");
+diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
+index 18a8182d4fec..7f1f32324504 100644
+--- a/drivers/gpio/gpio-xgene.c
++++ b/drivers/gpio/gpio-xgene.c
+@@ -42,9 +42,7 @@ struct xgene_gpio {
+ struct gpio_chip chip;
+ void __iomem *base;
+ spinlock_t lock;
+-#ifdef CONFIG_PM
+ u32 set_dr_val[XGENE_MAX_GPIO_BANKS];
+-#endif
+ };
+
+ static inline struct xgene_gpio *to_xgene_gpio(struct gpio_chip *chip)
+@@ -132,8 +130,7 @@ static int xgene_gpio_dir_out(struct gpio_chip *gc,
+ return 0;
+ }
+
+-#ifdef CONFIG_PM
+-static int xgene_gpio_suspend(struct device *dev)
++static __maybe_unused int xgene_gpio_suspend(struct device *dev)
+ {
+ struct xgene_gpio *gpio = dev_get_drvdata(dev);
+ unsigned long bank_offset;
+@@ -146,7 +143,7 @@ static int xgene_gpio_suspend(struct device *dev)
+ return 0;
+ }
+
+-static int xgene_gpio_resume(struct device *dev)
++static __maybe_unused int xgene_gpio_resume(struct device *dev)
+ {
+ struct xgene_gpio *gpio = dev_get_drvdata(dev);
+ unsigned long bank_offset;
+@@ -160,10 +157,6 @@ static int xgene_gpio_resume(struct device *dev)
+ }
+
+ static SIMPLE_DEV_PM_OPS(xgene_gpio_pm, xgene_gpio_suspend, xgene_gpio_resume);
+-#define XGENE_GPIO_PM_OPS (&xgene_gpio_pm)
+-#else
+-#define XGENE_GPIO_PM_OPS NULL
+-#endif
+
+ static int xgene_gpio_probe(struct platform_device *pdev)
+ {
+@@ -230,7 +223,7 @@ static struct platform_driver xgene_gpio_driver = {
+ .driver = {
+ .name = "xgene-gpio",
+ .of_match_table = xgene_gpio_of_match,
+- .pm = XGENE_GPIO_PM_OPS,
++ .pm = &xgene_gpio_pm,
+ },
+ .probe = xgene_gpio_probe,
+ .remove = xgene_gpio_remove,
+diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+index 530b82c4e78b..7c736e8d7f33 100644
+--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
++++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+@@ -189,6 +189,24 @@ int pqm_create_queue(struct process_queue_manager *pqm,
+
+ switch (type) {
+ case KFD_QUEUE_TYPE_SDMA:
++ if (dev->dqm->queue_count >=
++ CIK_SDMA_QUEUES_PER_ENGINE * CIK_SDMA_ENGINE_NUM) {
++ pr_err("Over-subscription is not allowed for SDMA.\n");
++ retval = -EPERM;
++ goto err_create_queue;
++ }
++
++ retval = create_cp_queue(pqm, dev, &q, properties, f, *qid);
++ if (retval != 0)
++ goto err_create_queue;
++ pqn->q = q;
++ pqn->kq = NULL;
++ retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd,
++ &q->properties.vmid);
++ pr_debug("DQM returned %d for create_queue\n", retval);
++ print_queue(q);
++ break;
++
+ case KFD_QUEUE_TYPE_COMPUTE:
+ /* check if there is over subscription */
+ if ((sched_policy == KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION) &&
+diff --git a/drivers/gpu/drm/gma500/mdfld_dsi_dpi.c b/drivers/gpu/drm/gma500/mdfld_dsi_dpi.c
+index d4813e03f5ee..00275c3856ce 100644
+--- a/drivers/gpu/drm/gma500/mdfld_dsi_dpi.c
++++ b/drivers/gpu/drm/gma500/mdfld_dsi_dpi.c
+@@ -821,14 +821,18 @@ void mdfld_dsi_dpi_mode_set(struct drm_encoder *encoder,
+ struct drm_device *dev = dsi_config->dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ int pipe = mdfld_dsi_encoder_get_pipe(dsi_encoder);
+-
+ u32 pipeconf_reg = PIPEACONF;
+ u32 dspcntr_reg = DSPACNTR;
++ u32 pipeconf, dspcntr;
+
+- u32 pipeconf = dev_priv->pipeconf[pipe];
+- u32 dspcntr = dev_priv->dspcntr[pipe];
+ u32 mipi = MIPI_PORT_EN | PASS_FROM_SPHY_TO_AFE | SEL_FLOPPED_HSTX;
+
++ if (WARN_ON(pipe < 0))
++ return;
++
++ pipeconf = dev_priv->pipeconf[pipe];
++ dspcntr = dev_priv->dspcntr[pipe];
++
+ if (pipe) {
+ pipeconf_reg = PIPECCONF;
+ dspcntr_reg = DSPCCNTR;
+diff --git a/drivers/gpu/drm/gma500/mdfld_dsi_output.c b/drivers/gpu/drm/gma500/mdfld_dsi_output.c
+index 89f705c3a5eb..910a2f253990 100644
+--- a/drivers/gpu/drm/gma500/mdfld_dsi_output.c
++++ b/drivers/gpu/drm/gma500/mdfld_dsi_output.c
+@@ -382,16 +382,6 @@ static int mdfld_dsi_connector_mode_valid(struct drm_connector *connector,
+ return MODE_OK;
+ }
+
+-static void mdfld_dsi_connector_dpms(struct drm_connector *connector, int mode)
+-{
+- if (mode == connector->dpms)
+- return;
+-
+- /*first, execute dpms*/
+-
+- drm_helper_connector_dpms(connector, mode);
+-}
+-
+ static struct drm_encoder *mdfld_dsi_connector_best_encoder(
+ struct drm_connector *connector)
+ {
+@@ -404,7 +394,7 @@ static struct drm_encoder *mdfld_dsi_connector_best_encoder(
+
+ /*DSI connector funcs*/
+ static const struct drm_connector_funcs mdfld_dsi_connector_funcs = {
+- .dpms = /*drm_helper_connector_dpms*/mdfld_dsi_connector_dpms,
++ .dpms = drm_helper_connector_dpms,
+ .save = mdfld_dsi_connector_save,
+ .restore = mdfld_dsi_connector_restore,
+ .detect = mdfld_dsi_connector_detect,
+diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
+index 58c959265b1a..36000f76e31d 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
++++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
+@@ -368,7 +368,7 @@ validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
+ struct nouveau_cli *cli = nouveau_cli(file_priv);
+ struct drm_device *dev = chan->drm->dev;
+ int trycnt = 0;
+- int ret, i;
++ int ret = -EINVAL, i;
+ struct nouveau_bo *res_bo = NULL;
+ LIST_HEAD(gart_list);
+ LIST_HEAD(vram_list);
+diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
+index 042038e8a662..6e6634cd1d17 100644
+--- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
++++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
+@@ -610,7 +610,8 @@ static int omap_dmm_probe(struct platform_device *dev)
+ match = of_match_node(dmm_of_match, dev->dev.of_node);
+ if (!match) {
+ dev_err(&dev->dev, "failed to find matching device node\n");
+- return -ENODEV;
++ ret = -ENODEV;
++ goto fail;
+ }
+
+ omap_dmm->plat_data = match->data;
+diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c
+index 6edcb5485092..b35ebabd6a9f 100644
+--- a/drivers/gpu/drm/radeon/radeon_uvd.c
++++ b/drivers/gpu/drm/radeon/radeon_uvd.c
+@@ -946,7 +946,7 @@ int radeon_uvd_calc_upll_dividers(struct radeon_device *rdev,
+ /* calc dclk divider with current vco freq */
+ dclk_div = radeon_uvd_calc_upll_post_div(vco_freq, dclk,
+ pd_min, pd_even);
+- if (vclk_div > pd_max)
++ if (dclk_div > pd_max)
+ break; /* vco is too big, it has to stop */
+
+ /* calc score with current vco freq */
+diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+index 824c835330df..de155c77f739 100644
+--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
++++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+@@ -511,7 +511,7 @@ static irqreturn_t rcar_du_crtc_irq(int irq, void *arg)
+ status = rcar_du_crtc_read(rcrtc, DSSR);
+ rcar_du_crtc_write(rcrtc, DSRCR, status & DSRCR_MASK);
+
+- if (status & DSSR_FRM) {
++ if (status & DSSR_VBK) {
+ drm_handle_vblank(rcrtc->crtc.dev, rcrtc->index);
+ rcar_du_crtc_finish_page_flip(rcrtc);
+ ret = IRQ_HANDLED;
+diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
+index d786b48f5d7b..d8638d8221ea 100644
+--- a/drivers/hid/hid-core.c
++++ b/drivers/hid/hid-core.c
+@@ -2010,6 +2010,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
++ { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_THT_2P_ARCADE) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
+@@ -2349,6 +2350,9 @@ static const struct hid_device_id hid_ignore_list[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
++ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERANALYSERCASSY) },
++ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CONVERTERCONTROLLERCASSY) },
++ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETESTCASSY) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
+diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
+index e995058ad264..62b337d61fe1 100644
+--- a/drivers/hid/hid-ids.h
++++ b/drivers/hid/hid-ids.h
+@@ -559,6 +559,9 @@
+ #define USB_DEVICE_ID_LD_MICROCASSYTIME 0x1033
+ #define USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE 0x1035
+ #define USB_DEVICE_ID_LD_MICROCASSYPH 0x1038
++#define USB_DEVICE_ID_LD_POWERANALYSERCASSY 0x1040
++#define USB_DEVICE_ID_LD_CONVERTERCONTROLLERCASSY 0x1042
++#define USB_DEVICE_ID_LD_MACHINETESTCASSY 0x1043
+ #define USB_DEVICE_ID_LD_JWM 0x1080
+ #define USB_DEVICE_ID_LD_DMMP 0x1081
+ #define USB_DEVICE_ID_LD_UMIP 0x1090
+@@ -1011,6 +1014,7 @@
+
+ #define USB_VENDOR_ID_XIN_MO 0x16c0
+ #define USB_DEVICE_ID_XIN_MO_DUAL_ARCADE 0x05e1
++#define USB_DEVICE_ID_THT_2P_ARCADE 0x75e1
+
+ #define USB_VENDOR_ID_XIROKU 0x1477
+ #define USB_DEVICE_ID_XIROKU_SPX 0x1006
+diff --git a/drivers/hid/hid-xinmo.c b/drivers/hid/hid-xinmo.c
+index 7df5227a7e61..9ad7731d2e10 100644
+--- a/drivers/hid/hid-xinmo.c
++++ b/drivers/hid/hid-xinmo.c
+@@ -46,6 +46,7 @@ static int xinmo_event(struct hid_device *hdev, struct hid_field *field,
+
+ static const struct hid_device_id xinmo_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
++ { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_THT_2P_ARCADE) },
+ { }
+ };
+
+diff --git a/drivers/hwmon/asus_atk0110.c b/drivers/hwmon/asus_atk0110.c
+index cccef87963e0..975c43d446f8 100644
+--- a/drivers/hwmon/asus_atk0110.c
++++ b/drivers/hwmon/asus_atk0110.c
+@@ -646,6 +646,9 @@ static int atk_read_value(struct atk_sensor_data *sensor, u64 *value)
+ else
+ err = atk_read_value_new(sensor, value);
+
++ if (err)
++ return err;
++
+ sensor->is_valid = true;
+ sensor->last_updated = jiffies;
+ sensor->cached_value = *value;
+diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
+index f2e47c7dd808..1362de353076 100644
+--- a/drivers/hwmon/pmbus/pmbus_core.c
++++ b/drivers/hwmon/pmbus/pmbus_core.c
+@@ -20,6 +20,7 @@
+ */
+
+ #include <linux/kernel.h>
++#include <linux/math64.h>
+ #include <linux/module.h>
+ #include <linux/init.h>
+ #include <linux/err.h>
+@@ -476,8 +477,8 @@ static long pmbus_reg2data_linear(struct pmbus_data *data,
+ static long pmbus_reg2data_direct(struct pmbus_data *data,
+ struct pmbus_sensor *sensor)
+ {
+- long val = (s16) sensor->data;
+- long m, b, R;
++ s64 b, val = (s16)sensor->data;
++ s32 m, R;
+
+ m = data->info->m[sensor->class];
+ b = data->info->b[sensor->class];
+@@ -505,11 +506,12 @@ static long pmbus_reg2data_direct(struct pmbus_data *data,
+ R--;
+ }
+ while (R < 0) {
+- val = DIV_ROUND_CLOSEST(val, 10);
++ val = div_s64(val + 5LL, 10L); /* round closest */
+ R++;
+ }
+
+- return (val - b) / m;
++ val = div_s64(val - b, m);
++ return clamp_val(val, LONG_MIN, LONG_MAX);
+ }
+
+ /*
+@@ -621,7 +623,8 @@ static u16 pmbus_data2reg_linear(struct pmbus_data *data,
+ static u16 pmbus_data2reg_direct(struct pmbus_data *data,
+ struct pmbus_sensor *sensor, long val)
+ {
+- long m, b, R;
++ s64 b, val64 = val;
++ s32 m, R;
+
+ m = data->info->m[sensor->class];
+ b = data->info->b[sensor->class];
+@@ -638,18 +641,18 @@ static u16 pmbus_data2reg_direct(struct pmbus_data *data,
+ R -= 3; /* Adjust R and b for data in milli-units */
+ b *= 1000;
+ }
+- val = val * m + b;
++ val64 = val64 * m + b;
+
+ while (R > 0) {
+- val *= 10;
++ val64 *= 10;
+ R--;
+ }
+ while (R < 0) {
+- val = DIV_ROUND_CLOSEST(val, 10);
++ val64 = div_s64(val64 + 5LL, 10L); /* round closest */
+ R++;
+ }
+
+- return val;
++ return (u16)clamp_val(val64, S16_MIN, S16_MAX);
+ }
+
+ static u16 pmbus_data2reg_vid(struct pmbus_data *data,
+diff --git a/drivers/i2c/i2c-boardinfo.c b/drivers/i2c/i2c-boardinfo.c
+index 90e322959303..42c25aed671d 100644
+--- a/drivers/i2c/i2c-boardinfo.c
++++ b/drivers/i2c/i2c-boardinfo.c
+@@ -56,9 +56,7 @@ EXPORT_SYMBOL_GPL(__i2c_first_dynamic_bus_num);
+ * The board info passed can safely be __initdata, but be careful of embedded
+ * pointers (for platform_data, functions, etc) since that won't be copied.
+ */
+-int __init
+-i2c_register_board_info(int busnum,
+- struct i2c_board_info const *info, unsigned len)
++int i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsigned len)
+ {
+ int status;
+
+diff --git a/drivers/iio/adc/axp288_adc.c b/drivers/iio/adc/axp288_adc.c
+index 1c626a3cc7f2..f3a64a45c512 100644
+--- a/drivers/iio/adc/axp288_adc.c
++++ b/drivers/iio/adc/axp288_adc.c
+@@ -44,7 +44,7 @@ struct axp288_adc_info {
+ struct regmap *regmap;
+ };
+
+-static const struct iio_chan_spec const axp288_adc_channels[] = {
++static const struct iio_chan_spec axp288_adc_channels[] = {
+ {
+ .indexed = 1,
+ .type = IIO_TEMP,
+diff --git a/drivers/iio/imu/adis_trigger.c b/drivers/iio/imu/adis_trigger.c
+index f53e9a803a0e..93b99bd93738 100644
+--- a/drivers/iio/imu/adis_trigger.c
++++ b/drivers/iio/imu/adis_trigger.c
+@@ -47,6 +47,10 @@ int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
+ if (adis->trig == NULL)
+ return -ENOMEM;
+
++ adis->trig->dev.parent = &adis->spi->dev;
++ adis->trig->ops = &adis_trigger_ops;
++ iio_trigger_set_drvdata(adis->trig, adis);
++
+ ret = request_irq(adis->spi->irq,
+ &iio_trigger_generic_data_rdy_poll,
+ IRQF_TRIGGER_RISING,
+@@ -55,9 +59,6 @@ int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
+ if (ret)
+ goto error_free_trig;
+
+- adis->trig->dev.parent = &adis->spi->dev;
+- adis->trig->ops = &adis_trigger_ops;
+- iio_trigger_set_drvdata(adis->trig, adis);
+ ret = iio_trigger_register(adis->trig);
+
+ indio_dev->trig = iio_trigger_get(adis->trig);
+diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
+index 7fa280b28ecb..ec6b26f008d9 100644
+--- a/drivers/iio/industrialio-buffer.c
++++ b/drivers/iio/industrialio-buffer.c
+@@ -150,7 +150,7 @@ unsigned int iio_buffer_poll(struct file *filp,
+ struct iio_dev *indio_dev = filp->private_data;
+ struct iio_buffer *rb = indio_dev->buffer;
+
+- if (!indio_dev->info)
++ if (!indio_dev->info || rb == NULL)
+ return 0;
+
+ poll_wait(filp, &rb->pollq, wait);
+diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
+index 68ddb3710215..c1e8c01f4ab3 100644
+--- a/drivers/infiniband/hw/cxgb4/cq.c
++++ b/drivers/infiniband/hw/cxgb4/cq.c
+@@ -581,10 +581,10 @@ static int poll_cq(struct t4_wq *wq, struct t4_cq *cq, struct t4_cqe *cqe,
+ ret = -EAGAIN;
+ goto skip_cqe;
+ }
+- if (unlikely((CQE_WRID_MSN(hw_cqe) != (wq->rq.msn)))) {
++ if (unlikely(!CQE_STATUS(hw_cqe) &&
++ CQE_WRID_MSN(hw_cqe) != wq->rq.msn)) {
+ t4_set_wq_in_error(wq);
+- hw_cqe->header |= htonl(CQE_STATUS_V(T4_ERR_MSN));
+- goto proc_cqe;
++ hw_cqe->header |= cpu_to_be32(CQE_STATUS_V(T4_ERR_MSN));
+ }
+ goto proc_cqe;
+ }
+diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
+index 1563ee64a180..640bb7360537 100644
+--- a/drivers/infiniband/hw/mlx4/main.c
++++ b/drivers/infiniband/hw/mlx4/main.c
+@@ -2436,9 +2436,8 @@ err_steer_free_bitmap:
+ kfree(ibdev->ib_uc_qpns_bitmap);
+
+ err_steer_qp_release:
+- if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
+- mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
+- ibdev->steer_qpn_count);
++ mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
++ ibdev->steer_qpn_count);
+ err_counter:
+ for (; i; --i)
+ if (ibdev->counters[i - 1] != -1)
+@@ -2540,11 +2539,9 @@ static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
+ ibdev->iboe.nb.notifier_call = NULL;
+ }
+
+- if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
+- mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
+- ibdev->steer_qpn_count);
+- kfree(ibdev->ib_uc_qpns_bitmap);
+- }
++ mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
++ ibdev->steer_qpn_count);
++ kfree(ibdev->ib_uc_qpns_bitmap);
+
+ if (ibdev->iboe.nb_inet.notifier_call) {
+ if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
+diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
+index 416cd07ab87a..6c30192dcb78 100644
+--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
++++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
+@@ -958,8 +958,7 @@ static int srpt_init_ch_qp(struct srpt_rdma_ch *ch, struct ib_qp *qp)
+ return -ENOMEM;
+
+ attr->qp_state = IB_QPS_INIT;
+- attr->qp_access_flags = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ |
+- IB_ACCESS_REMOTE_WRITE;
++ attr->qp_access_flags = IB_ACCESS_LOCAL_WRITE;
+ attr->port_num = ch->sport->port;
+ attr->pkey_index = 0;
+
+diff --git a/drivers/input/keyboard/tca8418_keypad.c b/drivers/input/keyboard/tca8418_keypad.c
+index 4e491c1762cf..5c4f7f8f2c20 100644
+--- a/drivers/input/keyboard/tca8418_keypad.c
++++ b/drivers/input/keyboard/tca8418_keypad.c
+@@ -164,11 +164,18 @@ static void tca8418_read_keypad(struct tca8418_keypad *keypad_data)
+ int error, col, row;
+ u8 reg, state, code;
+
+- /* Initial read of the key event FIFO */
+- error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, ®);
++ do {
++ error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, ®);
++ if (error < 0) {
++ dev_err(&keypad_data->client->dev,
++ "unable to read REG_KEY_EVENT_A\n");
++ break;
++ }
++
++ /* Assume that key code 0 signifies empty FIFO */
++ if (reg <= 0)
++ break;
+
+- /* Assume that key code 0 signifies empty FIFO */
+- while (error >= 0 && reg > 0) {
+ state = reg & KEY_EVENT_VALUE;
+ code = reg & KEY_EVENT_CODE;
+
+@@ -184,11 +191,7 @@ static void tca8418_read_keypad(struct tca8418_keypad *keypad_data)
+
+ /* Read for next loop */
+ error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, ®);
+- }
+-
+- if (error < 0)
+- dev_err(&keypad_data->client->dev,
+- "unable to read REG_KEY_EVENT_A\n");
++ } while (1);
+
+ input_sync(input);
+ }
+diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c
+index 0e0d094df2e6..6caeb1a2670c 100644
+--- a/drivers/input/misc/twl6040-vibra.c
++++ b/drivers/input/misc/twl6040-vibra.c
+@@ -262,7 +262,7 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
+ int vddvibr_uV = 0;
+ int error;
+
+- twl6040_core_node = of_find_node_by_name(twl6040_core_dev->of_node,
++ twl6040_core_node = of_get_child_by_name(twl6040_core_dev->of_node,
+ "vibra");
+ if (!twl6040_core_node) {
+ dev_err(&pdev->dev, "parent of node is missing?\n");
+diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
+index c3c5d492cba0..07ce8f4314ba 100644
+--- a/drivers/input/mouse/elantech.c
++++ b/drivers/input/mouse/elantech.c
+@@ -1550,7 +1550,7 @@ static int elantech_set_properties(struct elantech_data *etd)
+ case 5:
+ etd->hw_version = 3;
+ break;
+- case 6 ... 14:
++ case 6 ... 15:
+ etd->hw_version = 4;
+ break;
+ default:
+diff --git a/drivers/input/mouse/trackpoint.c b/drivers/input/mouse/trackpoint.c
+index 7e2dc5e56632..0b49f29bf0da 100644
+--- a/drivers/input/mouse/trackpoint.c
++++ b/drivers/input/mouse/trackpoint.c
+@@ -383,6 +383,9 @@ int trackpoint_detect(struct psmouse *psmouse, bool set_properties)
+ if (trackpoint_read(&psmouse->ps2dev, TP_EXT_BTN, &button_info)) {
+ psmouse_warn(psmouse, "failed to get extended button data, assuming 3 buttons\n");
+ button_info = 0x33;
++ } else if (!button_info) {
++ psmouse_warn(psmouse, "got 0 in extended button data, assuming 3 buttons\n");
++ button_info = 0x33;
+ }
+
+ psmouse->private = kzalloc(sizeof(struct trackpoint_data), GFP_KERNEL);
+diff --git a/drivers/input/touchscreen/88pm860x-ts.c b/drivers/input/touchscreen/88pm860x-ts.c
+index 251ff2aa0633..7a0dbce4dae9 100644
+--- a/drivers/input/touchscreen/88pm860x-ts.c
++++ b/drivers/input/touchscreen/88pm860x-ts.c
+@@ -126,7 +126,7 @@ static int pm860x_touch_dt_init(struct platform_device *pdev,
+ int data, n, ret;
+ if (!np)
+ return -ENODEV;
+- np = of_find_node_by_name(np, "touch");
++ np = of_get_child_by_name(np, "touch");
+ if (!np) {
+ dev_err(&pdev->dev, "Can't find touch node\n");
+ return -EINVAL;
+@@ -144,13 +144,13 @@ static int pm860x_touch_dt_init(struct platform_device *pdev,
+ if (data) {
+ ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data);
+ if (ret < 0)
+- return -EINVAL;
++ goto err_put_node;
+ }
+ /* set tsi prebias time */
+ if (!of_property_read_u32(np, "marvell,88pm860x-tsi-prebias", &data)) {
+ ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data);
+ if (ret < 0)
+- return -EINVAL;
++ goto err_put_node;
+ }
+ /* set prebias & prechg time of pen detect */
+ data = 0;
+@@ -161,10 +161,18 @@ static int pm860x_touch_dt_init(struct platform_device *pdev,
+ if (data) {
+ ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data);
+ if (ret < 0)
+- return -EINVAL;
++ goto err_put_node;
+ }
+ of_property_read_u32(np, "marvell,88pm860x-resistor-X", res_x);
++
++ of_node_put(np);
++
+ return 0;
++
++err_put_node:
++ of_node_put(np);
++
++ return -EINVAL;
+ }
+ #else
+ #define pm860x_touch_dt_init(x, y, z) (-1)
+diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
+index 9976c37b9c64..f2b3a0152860 100644
+--- a/drivers/irqchip/irq-gic-v3.c
++++ b/drivers/irqchip/irq-gic-v3.c
+@@ -584,7 +584,7 @@ static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
+ * Ensure that stores to Normal memory are visible to the
+ * other CPUs before issuing the IPI.
+ */
+- smp_wmb();
++ wmb();
+
+ for_each_cpu(cpu, mask) {
+ u64 cluster_id = cpu_logical_map(cpu) & ~0xffUL;
+diff --git a/drivers/isdn/capi/kcapi.c b/drivers/isdn/capi/kcapi.c
+index 823f6985b260..dd7e38ac29bd 100644
+--- a/drivers/isdn/capi/kcapi.c
++++ b/drivers/isdn/capi/kcapi.c
+@@ -1032,6 +1032,7 @@ static int old_capi_manufacturer(unsigned int cmd, void __user *data)
+ sizeof(avmb1_carddef))))
+ return -EFAULT;
+ cdef.cardtype = AVM_CARDTYPE_B1;
++ cdef.cardnr = 0;
+ } else {
+ if ((retval = copy_from_user(&cdef, data,
+ sizeof(avmb1_extcarddef))))
+diff --git a/drivers/isdn/hardware/eicon/message.c b/drivers/isdn/hardware/eicon/message.c
+index 7b4ddf0a39ec..2d28530b7e82 100644
+--- a/drivers/isdn/hardware/eicon/message.c
++++ b/drivers/isdn/hardware/eicon/message.c
+@@ -147,7 +147,7 @@ static word plci_remove_check(PLCI *);
+ static void listen_check(DIVA_CAPI_ADAPTER *);
+ static byte AddInfo(byte **, byte **, byte *, byte *);
+ static byte getChannel(API_PARSE *);
+-static void IndParse(PLCI *, word *, byte **, byte);
++static void IndParse(PLCI *, const word *, byte **, byte);
+ static byte ie_compare(byte *, byte *);
+ static word find_cip(DIVA_CAPI_ADAPTER *, byte *, byte *);
+ static word CPN_filter_ok(byte *cpn, DIVA_CAPI_ADAPTER *, word);
+@@ -4860,7 +4860,7 @@ static void sig_ind(PLCI *plci)
+ /* included before the ESC_MSGTYPE and MAXPARMSIDS has to be incremented */
+ /* SMSG is situated at the end because its 0 (for compatibility reasons */
+ /* (see Info_Mask Bit 4, first IE. then the message type) */
+- word parms_id[] =
++ static const word parms_id[] =
+ {MAXPARMSIDS, CPN, 0xff, DSA, OSA, BC, LLC, HLC, ESC_CAUSE, DSP, DT, CHA,
+ UUI, CONG_RR, CONG_RNR, ESC_CHI, KEY, CHI, CAU, ESC_LAW,
+ RDN, RDX, CONN_NR, RIN, NI, CAI, ESC_CR,
+@@ -4868,12 +4868,12 @@ static void sig_ind(PLCI *plci)
+ /* 14 FTY repl by ESC_CHI */
+ /* 18 PI repl by ESC_LAW */
+ /* removed OAD changed to 0xff for future use, OAD is multiIE now */
+- word multi_fac_id[] = {1, FTY};
+- word multi_pi_id[] = {1, PI};
+- word multi_CiPN_id[] = {1, OAD};
+- word multi_ssext_id[] = {1, ESC_SSEXT};
++ static const word multi_fac_id[] = {1, FTY};
++ static const word multi_pi_id[] = {1, PI};
++ static const word multi_CiPN_id[] = {1, OAD};
++ static const word multi_ssext_id[] = {1, ESC_SSEXT};
+
+- word multi_vswitch_id[] = {1, ESC_VSWITCH};
++ static const word multi_vswitch_id[] = {1, ESC_VSWITCH};
+
+ byte *cau;
+ word ncci;
+@@ -8926,7 +8926,7 @@ static void listen_check(DIVA_CAPI_ADAPTER *a)
+ /* functions for all parameters sent in INDs */
+ /*------------------------------------------------------------------*/
+
+-static void IndParse(PLCI *plci, word *parms_id, byte **parms, byte multiIEsize)
++static void IndParse(PLCI *plci, const word *parms_id, byte **parms, byte multiIEsize)
+ {
+ word ploc; /* points to current location within packet */
+ byte w;
+diff --git a/drivers/isdn/icn/icn.c b/drivers/isdn/icn/icn.c
+index 358a574d9e8b..46d957c34be1 100644
+--- a/drivers/isdn/icn/icn.c
++++ b/drivers/isdn/icn/icn.c
+@@ -718,7 +718,7 @@ icn_sendbuf(int channel, int ack, struct sk_buff *skb, icn_card *card)
+ return 0;
+ if (card->sndcount[channel] > ICN_MAX_SQUEUE)
+ return 0;
+-#warning TODO test headroom or use skb->nb to flag ACK
++ /* TODO test headroom or use skb->nb to flag ACK */
+ nskb = skb_clone(skb, GFP_ATOMIC);
+ if (nskb) {
+ /* Push ACK flag as one
+diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
+index f0b75d54951a..ee2927b460c9 100644
+--- a/drivers/md/bcache/btree.c
++++ b/drivers/md/bcache/btree.c
+@@ -808,7 +808,10 @@ int bch_btree_cache_alloc(struct cache_set *c)
+ c->shrink.scan_objects = bch_mca_scan;
+ c->shrink.seeks = 4;
+ c->shrink.batch = c->btree_pages * 2;
+- register_shrinker(&c->shrink);
++
++ if (register_shrinker(&c->shrink))
++ pr_warn("bcache: %s: could not register shrinker",
++ __func__);
+
+ return 0;
+ }
+diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
+index 51dc353f7962..657b8f763754 100644
+--- a/drivers/md/dm-bufio.c
++++ b/drivers/md/dm-bufio.c
+@@ -1521,7 +1521,8 @@ static unsigned long __scan(struct dm_bufio_client *c, unsigned long nr_to_scan,
+ int l;
+ struct dm_buffer *b, *tmp;
+ unsigned long freed = 0;
+- unsigned long count = nr_to_scan;
++ unsigned long count = c->n_buffers[LIST_CLEAN] +
++ c->n_buffers[LIST_DIRTY];
+ unsigned long retain_target = get_retain_buffers(c);
+
+ for (l = 0; l < LIST_SIZE; l++) {
+@@ -1558,6 +1559,7 @@ dm_bufio_shrink_count(struct shrinker *shrink, struct shrink_control *sc)
+ {
+ struct dm_bufio_client *c;
+ unsigned long count;
++ unsigned long retain_target;
+
+ c = container_of(shrink, struct dm_bufio_client, shrinker);
+ if (sc->gfp_mask & __GFP_FS)
+@@ -1566,8 +1568,9 @@ dm_bufio_shrink_count(struct shrinker *shrink, struct shrink_control *sc)
+ return 0;
+
+ count = c->n_buffers[LIST_CLEAN] + c->n_buffers[LIST_DIRTY];
++ retain_target = get_retain_buffers(c);
+ dm_bufio_unlock(c);
+- return count;
++ return (count < retain_target) ? 0 : (count - retain_target);
+ }
+
+ /*
+diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
+index a178134abbe8..c9f51f7c1063 100644
+--- a/drivers/md/dm-thin-metadata.c
++++ b/drivers/md/dm-thin-metadata.c
+@@ -81,10 +81,14 @@
+ #define SECTOR_TO_BLOCK_SHIFT 3
+
+ /*
++ * For btree insert:
+ * 3 for btree insert +
+ * 2 for btree lookup used within space map
++ * For btree remove:
++ * 2 for shadow spine +
++ * 4 for rebalance 3 child node
+ */
+-#define THIN_MAX_CONCURRENT_LOCKS 5
++#define THIN_MAX_CONCURRENT_LOCKS 6
+
+ /* This should be plenty */
+ #define SPACE_MAP_ROOT_SIZE 128
+diff --git a/drivers/md/md.c b/drivers/md/md.c
+index 1fdcd5735418..03bcc1ab2e9d 100644
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -1043,8 +1043,9 @@ static int super_90_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor
+ * (not needed for Linear and RAID0 as metadata doesn't
+ * record this size)
+ */
+- if (rdev->sectors >= (2ULL << 32) && sb->level >= 1)
+- rdev->sectors = (2ULL << 32) - 2;
++ if (IS_ENABLED(CONFIG_LBDAF) && (u64)rdev->sectors >= (2ULL << 32) &&
++ sb->level >= 1)
++ rdev->sectors = (sector_t)(2ULL << 32) - 2;
+
+ if (rdev->sectors < ((sector_t)sb->size) * 2 && sb->level >= 1)
+ /* "this cannot possibly happen" ... */
+@@ -1337,8 +1338,9 @@ super_90_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors)
+ /* Limit to 4TB as metadata cannot record more than that.
+ * 4TB == 2^32 KB, or 2*2^32 sectors.
+ */
+- if (num_sectors >= (2ULL << 32) && rdev->mddev->level >= 1)
+- num_sectors = (2ULL << 32) - 2;
++ if (IS_ENABLED(CONFIG_LBDAF) && (u64)num_sectors >= (2ULL << 32) &&
++ rdev->mddev->level >= 1)
++ num_sectors = (sector_t)(2ULL << 32) - 2;
+ md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size,
+ rdev->sb_page);
+ md_super_wait(rdev->mddev);
+diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c
+index 360c22d44647..f2a8e4c69d9f 100644
+--- a/drivers/md/persistent-data/dm-btree.c
++++ b/drivers/md/persistent-data/dm-btree.c
+@@ -572,23 +572,8 @@ static int btree_split_beneath(struct shadow_spine *s, uint64_t key)
+ pn->keys[1] = rn->keys[0];
+ memcpy_disk(value_ptr(pn, 1), &val, sizeof(__le64));
+
+- /*
+- * rejig the spine. This is ugly, since it knows too
+- * much about the spine
+- */
+- if (s->nodes[0] != new_parent) {
+- unlock_block(s->info, s->nodes[0]);
+- s->nodes[0] = new_parent;
+- }
+- if (key < le64_to_cpu(rn->keys[0])) {
+- unlock_block(s->info, right);
+- s->nodes[1] = left;
+- } else {
+- unlock_block(s->info, left);
+- s->nodes[1] = right;
+- }
+- s->count = 2;
+-
++ unlock_block(s->info, left);
++ unlock_block(s->info, right);
+ return 0;
+ }
+
+diff --git a/drivers/media/i2c/s5k6aa.c b/drivers/media/i2c/s5k6aa.c
+index de803a11efb4..768ae2115f1a 100644
+--- a/drivers/media/i2c/s5k6aa.c
++++ b/drivers/media/i2c/s5k6aa.c
+@@ -421,6 +421,7 @@ static int s5k6aa_set_ahb_address(struct i2c_client *client)
+
+ /**
+ * s5k6aa_configure_pixel_clock - apply ISP main clock/PLL configuration
++ * @s5k6aa: pointer to &struct s5k6aa describing the device
+ *
+ * Configure the internal ISP PLL for the required output frequency.
+ * Locking: called with s5k6aa.lock mutex held.
+@@ -669,6 +670,7 @@ static int s5k6aa_set_input_params(struct s5k6aa *s5k6aa)
+
+ /**
+ * s5k6aa_configure_video_bus - configure the video output interface
++ * @s5k6aa: pointer to &struct s5k6aa describing the device
+ * @bus_type: video bus type: parallel or MIPI-CSI
+ * @nlanes: number of MIPI lanes to be used (MIPI-CSI only)
+ *
+@@ -724,6 +726,8 @@ static int s5k6aa_new_config_sync(struct i2c_client *client, int timeout,
+
+ /**
+ * s5k6aa_set_prev_config - write user preview register set
++ * @s5k6aa: pointer to &struct s5k6aa describing the device
++ * @preset: s5kaa preset to be applied
+ *
+ * Configure output resolution and color fromat, pixel clock
+ * frequency range, device frame rate type and frame period range.
+@@ -777,6 +781,7 @@ static int s5k6aa_set_prev_config(struct s5k6aa *s5k6aa,
+
+ /**
+ * s5k6aa_initialize_isp - basic ISP MCU initialization
++ * @sd: pointer to V4L2 sub-device descriptor
+ *
+ * Configure AHB addresses for registers read/write; configure PLLs for
+ * required output pixel clock. The ISP power supply needs to be already
+diff --git a/drivers/media/platform/soc_camera/soc_scale_crop.c b/drivers/media/platform/soc_camera/soc_scale_crop.c
+index 8e74fb7f2a07..2d673516a614 100644
+--- a/drivers/media/platform/soc_camera/soc_scale_crop.c
++++ b/drivers/media/platform/soc_camera/soc_scale_crop.c
+@@ -400,3 +400,7 @@ void soc_camera_calc_client_output(struct soc_camera_device *icd,
+ mf->height = soc_camera_shift_scale(rect->height, shift, scale_v);
+ }
+ EXPORT_SYMBOL(soc_camera_calc_client_output);
++
++MODULE_DESCRIPTION("soc-camera scaling-cropping functions");
++MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
++MODULE_LICENSE("GPL");
+diff --git a/drivers/media/tuners/r820t.c b/drivers/media/tuners/r820t.c
+index 71159a58860f..4bfd64b0c0ad 100644
+--- a/drivers/media/tuners/r820t.c
++++ b/drivers/media/tuners/r820t.c
+@@ -410,9 +410,11 @@ static int r820t_write(struct r820t_priv *priv, u8 reg, const u8 *val,
+ return 0;
+ }
+
+-static int r820t_write_reg(struct r820t_priv *priv, u8 reg, u8 val)
++static inline int r820t_write_reg(struct r820t_priv *priv, u8 reg, u8 val)
+ {
+- return r820t_write(priv, reg, &val, 1);
++ u8 tmp = val; /* work around GCC PR81715 with asan-stack=1 */
++
++ return r820t_write(priv, reg, &tmp, 1);
+ }
+
+ static int r820t_read_cache_reg(struct r820t_priv *priv, int reg)
+@@ -425,17 +427,18 @@ static int r820t_read_cache_reg(struct r820t_priv *priv, int reg)
+ return -EINVAL;
+ }
+
+-static int r820t_write_reg_mask(struct r820t_priv *priv, u8 reg, u8 val,
++static inline int r820t_write_reg_mask(struct r820t_priv *priv, u8 reg, u8 val,
+ u8 bit_mask)
+ {
++ u8 tmp = val;
+ int rc = r820t_read_cache_reg(priv, reg);
+
+ if (rc < 0)
+ return rc;
+
+- val = (rc & ~bit_mask) | (val & bit_mask);
++ tmp = (rc & ~bit_mask) | (tmp & bit_mask);
+
+- return r820t_write(priv, reg, &val, 1);
++ return r820t_write(priv, reg, &tmp, 1);
+ }
+
+ static int r820t_read(struct r820t_priv *priv, u8 reg, u8 *val, int len)
+diff --git a/drivers/media/usb/dvb-usb-v2/lmedm04.c b/drivers/media/usb/dvb-usb-v2/lmedm04.c
+index 5de6f7c04d09..7399bd58e286 100644
+--- a/drivers/media/usb/dvb-usb-v2/lmedm04.c
++++ b/drivers/media/usb/dvb-usb-v2/lmedm04.c
+@@ -444,18 +444,23 @@ static int lme2510_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid,
+
+ static int lme2510_return_status(struct dvb_usb_device *d)
+ {
+- int ret = 0;
++ int ret;
+ u8 *data;
+
+- data = kzalloc(10, GFP_KERNEL);
++ data = kzalloc(6, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+- ret |= usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
+- 0x06, 0x80, 0x0302, 0x00, data, 0x0006, 200);
+- info("Firmware Status: %x (%x)", ret , data[2]);
++ ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
++ 0x06, 0x80, 0x0302, 0x00,
++ data, 0x6, 200);
++ if (ret != 6)
++ ret = -EINVAL;
++ else
++ ret = data[2];
++
++ info("Firmware Status: %6ph", data);
+
+- ret = (ret < 0) ? -ENODEV : data[2];
+ kfree(data);
+ return ret;
+ }
+@@ -1029,8 +1034,6 @@ static int dm04_lme2510_frontend_attach(struct dvb_usb_adapter *adap)
+
+ if (adap->fe[0]) {
+ info("FE Found M88RS2000");
+- dvb_attach(ts2020_attach, adap->fe[0], &ts2020_config,
+- &d->i2c_adap);
+ st->i2c_tuner_gate_w = 5;
+ st->i2c_tuner_gate_r = 5;
+ st->i2c_tuner_addr = 0x60;
+@@ -1096,17 +1099,18 @@ static int dm04_lme2510_tuner(struct dvb_usb_adapter *adap)
+ ret = st->tuner_config;
+ break;
+ case TUNER_RS2000:
+- ret = st->tuner_config;
++ if (dvb_attach(ts2020_attach, adap->fe[0],
++ &ts2020_config, &d->i2c_adap))
++ ret = st->tuner_config;
+ break;
+ default:
+ break;
+ }
+
+- if (ret)
++ if (ret) {
+ info("TUN Found %s tuner", tun_msg[ret]);
+- else {
+- info("TUN No tuner found --- resetting device");
+- lme_coldreset(d);
++ } else {
++ info("TUN No tuner found");
+ return -ENODEV;
+ }
+
+@@ -1150,6 +1154,7 @@ static int lme2510_get_adapter_count(struct dvb_usb_device *d)
+ static int lme2510_identify_state(struct dvb_usb_device *d, const char **name)
+ {
+ struct lme2510_state *st = d->priv;
++ int status;
+
+ usb_reset_configuration(d->udev);
+
+@@ -1158,12 +1163,16 @@ static int lme2510_identify_state(struct dvb_usb_device *d, const char **name)
+
+ st->dvb_usb_lme2510_firmware = dvb_usb_lme2510_firmware;
+
+- if (lme2510_return_status(d) == 0x44) {
++ status = lme2510_return_status(d);
++ if (status == 0x44) {
+ *name = lme_firmware_switch(d, 0);
+ return COLD;
+ }
+
+- return 0;
++ if (status != 0x47)
++ return -EINVAL;
++
++ return WARM;
+ }
+
+ static int lme2510_get_stream_config(struct dvb_frontend *fe, u8 *ts_type,
+diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c
+index ffc3704abded..d89de44d94a0 100644
+--- a/drivers/media/usb/dvb-usb/cxusb.c
++++ b/drivers/media/usb/dvb-usb/cxusb.c
+@@ -818,6 +818,8 @@ static int dvico_bluebird_xc2028_callback(void *ptr, int component,
+ case XC2028_RESET_CLK:
+ deb_info("%s: XC2028_RESET_CLK %d\n", __func__, arg);
+ break;
++ case XC2028_I2C_FLUSH:
++ break;
+ default:
+ deb_info("%s: unknown command %d, arg %d\n", __func__,
+ command, arg);
+diff --git a/drivers/media/usb/dvb-usb/dib0700_devices.c b/drivers/media/usb/dvb-usb/dib0700_devices.c
+index 0d7565158207..97057ae10509 100644
+--- a/drivers/media/usb/dvb-usb/dib0700_devices.c
++++ b/drivers/media/usb/dvb-usb/dib0700_devices.c
+@@ -431,6 +431,7 @@ static int stk7700ph_xc3028_callback(void *ptr, int component,
+ state->dib7000p_ops.set_gpio(adap->fe_adap[0].fe, 8, 0, 1);
+ break;
+ case XC2028_RESET_CLK:
++ case XC2028_I2C_FLUSH:
+ break;
+ default:
+ err("%s: unknown command %d, arg %d\n", __func__,
+diff --git a/drivers/media/usb/em28xx/Kconfig b/drivers/media/usb/em28xx/Kconfig
+index e382210c4ada..75323f5efd0f 100644
+--- a/drivers/media/usb/em28xx/Kconfig
++++ b/drivers/media/usb/em28xx/Kconfig
+@@ -11,7 +11,7 @@ config VIDEO_EM28XX_V4L2
+ select VIDEO_SAA711X if MEDIA_SUBDRV_AUTOSELECT
+ select VIDEO_TVP5150 if MEDIA_SUBDRV_AUTOSELECT
+ select VIDEO_MSP3400 if MEDIA_SUBDRV_AUTOSELECT
+- select VIDEO_MT9V011 if MEDIA_SUBDRV_AUTOSELECT
++ select VIDEO_MT9V011 if MEDIA_SUBDRV_AUTOSELECT && MEDIA_CAMERA_SUPPORT
+
+ ---help---
+ This is a video4linux driver for Empia 28xx based TV cards.
+diff --git a/drivers/media/usb/go7007/Kconfig b/drivers/media/usb/go7007/Kconfig
+index 95a3af644a92..af1d02430931 100644
+--- a/drivers/media/usb/go7007/Kconfig
++++ b/drivers/media/usb/go7007/Kconfig
+@@ -11,7 +11,7 @@ config VIDEO_GO7007
+ select VIDEO_TW2804 if MEDIA_SUBDRV_AUTOSELECT
+ select VIDEO_TW9903 if MEDIA_SUBDRV_AUTOSELECT
+ select VIDEO_TW9906 if MEDIA_SUBDRV_AUTOSELECT
+- select VIDEO_OV7640 if MEDIA_SUBDRV_AUTOSELECT
++ select VIDEO_OV7640 if MEDIA_SUBDRV_AUTOSELECT && MEDIA_CAMERA_SUPPORT
+ select VIDEO_UDA1342 if MEDIA_SUBDRV_AUTOSELECT
+ ---help---
+ This is a video4linux driver for the WIS GO7007 MPEG
+diff --git a/drivers/media/usb/hdpvr/hdpvr-core.c b/drivers/media/usb/hdpvr/hdpvr-core.c
+index 3fc64197b4e6..08f0ca7aa012 100644
+--- a/drivers/media/usb/hdpvr/hdpvr-core.c
++++ b/drivers/media/usb/hdpvr/hdpvr-core.c
+@@ -273,7 +273,9 @@ static int hdpvr_probe(struct usb_interface *interface,
+ struct hdpvr_device *dev;
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
++#if IS_ENABLED(CONFIG_I2C)
+ struct i2c_client *client;
++#endif
+ size_t buffer_size;
+ int i;
+ int retval = -ENOMEM;
+diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c
+index a7e1f6f37790..a8f265cee365 100644
+--- a/drivers/media/usb/pwc/pwc-if.c
++++ b/drivers/media/usb/pwc/pwc-if.c
+@@ -1110,8 +1110,10 @@ static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id
+
+ return 0;
+
++#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+ err_video_unreg:
+ video_unregister_device(&pdev->vdev);
++#endif
+ err_unregister_v4l2_dev:
+ v4l2_device_unregister(&pdev->v4l2_dev);
+ err_free_controls:
+diff --git a/drivers/media/usb/usbtv/usbtv-core.c b/drivers/media/usb/usbtv/usbtv-core.c
+index 29428bef272c..3bbc77aa6a33 100644
+--- a/drivers/media/usb/usbtv/usbtv-core.c
++++ b/drivers/media/usb/usbtv/usbtv-core.c
+@@ -127,6 +127,7 @@ static void usbtv_disconnect(struct usb_interface *intf)
+
+ static struct usb_device_id usbtv_id_table[] = {
+ { USB_DEVICE(0x1b71, 0x3002) },
++ { USB_DEVICE(0x1f71, 0x3301) },
+ {}
+ };
+ MODULE_DEVICE_TABLE(usb, usbtv_id_table);
+diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
+index 3b3becc5718d..7b12710becac 100644
+--- a/drivers/media/usb/usbvision/usbvision-video.c
++++ b/drivers/media/usb/usbvision/usbvision-video.c
+@@ -1522,6 +1522,13 @@ static int usbvision_probe(struct usb_interface *intf,
+ printk(KERN_INFO "%s: %s found\n", __func__,
+ usbvision_device_data[model].model_string);
+
++ /*
++ * this is a security check.
++ * an exploit using an incorrect bInterfaceNumber is known
++ */
++ if (ifnum >= USB_MAXINTERFACES || !dev->actconfig->interface[ifnum])
++ return -ENODEV;
++
+ if (usbvision_device_data[model].interface >= 0)
+ interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
+ else if (ifnum < dev->actconfig->desc.bNumInterfaces)
+diff --git a/drivers/media/v4l2-core/Kconfig b/drivers/media/v4l2-core/Kconfig
+index ba7e21a73023..b0372b1908f1 100644
+--- a/drivers/media/v4l2-core/Kconfig
++++ b/drivers/media/v4l2-core/Kconfig
+@@ -37,7 +37,6 @@ config VIDEO_PCI_SKELETON
+ # Used by drivers that need tuner.ko
+ config VIDEO_TUNER
+ tristate
+- depends on MEDIA_TUNER
+
+ # Used by drivers that need v4l2-mem2mem.ko
+ config V4L2_MEM2MEM_DEV
+diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+index 4f002d0bebb1..e03aa0961360 100644
+--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
++++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+@@ -18,8 +18,18 @@
+ #include <linux/videodev2.h>
+ #include <linux/v4l2-subdev.h>
+ #include <media/v4l2-dev.h>
++#include <media/v4l2-fh.h>
++#include <media/v4l2-ctrls.h>
+ #include <media/v4l2-ioctl.h>
+
++/* Use the same argument order as copy_in_user */
++#define assign_in_user(to, from) \
++({ \
++ typeof(*from) __assign_tmp; \
++ \
++ get_user(__assign_tmp, from) || put_user(__assign_tmp, to); \
++})
++
+ static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ {
+ long ret = -ENOIOCTLCMD;
+@@ -33,117 +43,88 @@ static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+
+ struct v4l2_clip32 {
+ struct v4l2_rect c;
+- compat_caddr_t next;
++ compat_caddr_t next;
+ };
+
+ struct v4l2_window32 {
+ struct v4l2_rect w;
+- __u32 field; /* enum v4l2_field */
++ __u32 field; /* enum v4l2_field */
+ __u32 chromakey;
+ compat_caddr_t clips; /* actually struct v4l2_clip32 * */
+ __u32 clipcount;
+ compat_caddr_t bitmap;
++ __u8 global_alpha;
+ };
+
+-static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
+-{
+- if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
+- copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
+- get_user(kp->field, &up->field) ||
+- get_user(kp->chromakey, &up->chromakey) ||
+- get_user(kp->clipcount, &up->clipcount))
+- return -EFAULT;
+- if (kp->clipcount > 2048)
+- return -EINVAL;
+- if (kp->clipcount) {
+- struct v4l2_clip32 __user *uclips;
+- struct v4l2_clip __user *kclips;
+- int n = kp->clipcount;
+- compat_caddr_t p;
+-
+- if (get_user(p, &up->clips))
+- return -EFAULT;
+- uclips = compat_ptr(p);
+- kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
+- kp->clips = kclips;
+- while (--n >= 0) {
+- if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
+- return -EFAULT;
+- if (put_user(n ? kclips + 1 : NULL, &kclips->next))
+- return -EFAULT;
+- uclips += 1;
+- kclips += 1;
+- }
+- } else
+- kp->clips = NULL;
+- return 0;
+-}
+-
+-static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
++static int get_v4l2_window32(struct v4l2_window __user *kp,
++ struct v4l2_window32 __user *up,
++ void __user *aux_buf, u32 aux_space)
+ {
+- if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) ||
+- put_user(kp->field, &up->field) ||
+- put_user(kp->chromakey, &up->chromakey) ||
+- put_user(kp->clipcount, &up->clipcount))
+- return -EFAULT;
+- return 0;
+-}
+-
+-static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
+-{
+- if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
+- return -EFAULT;
+- return 0;
+-}
+-
+-static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
+- struct v4l2_pix_format_mplane __user *up)
+-{
+- if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane)))
++ struct v4l2_clip32 __user *uclips;
++ struct v4l2_clip __user *kclips;
++ compat_caddr_t p;
++ u32 clipcount;
++
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ copy_in_user(&kp->w, &up->w, sizeof(up->w)) ||
++ assign_in_user(&kp->field, &up->field) ||
++ assign_in_user(&kp->chromakey, &up->chromakey) ||
++ assign_in_user(&kp->global_alpha, &up->global_alpha) ||
++ get_user(clipcount, &up->clipcount) ||
++ put_user(clipcount, &kp->clipcount))
+ return -EFAULT;
+- return 0;
+-}
++ if (clipcount > 2048)
++ return -EINVAL;
++ if (!clipcount)
++ return put_user(NULL, &kp->clips);
+
+-static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
+-{
+- if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
++ if (get_user(p, &up->clips))
+ return -EFAULT;
+- return 0;
+-}
+-
+-static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
+- struct v4l2_pix_format_mplane __user *up)
+-{
+- if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane)))
++ uclips = compat_ptr(p);
++ if (aux_space < clipcount * sizeof(*kclips))
+ return -EFAULT;
+- return 0;
+-}
+-
+-static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
+-{
+- if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
++ kclips = aux_buf;
++ if (put_user(kclips, &kp->clips))
+ return -EFAULT;
+- return 0;
+-}
+
+-static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
+-{
+- if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
+- return -EFAULT;
++ while (clipcount--) {
++ if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
++ return -EFAULT;
++ if (put_user(clipcount ? kclips + 1 : NULL, &kclips->next))
++ return -EFAULT;
++ uclips++;
++ kclips++;
++ }
+ return 0;
+ }
+
+-static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
++static int put_v4l2_window32(struct v4l2_window __user *kp,
++ struct v4l2_window32 __user *up)
+ {
+- if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
++ struct v4l2_clip __user *kclips = kp->clips;
++ struct v4l2_clip32 __user *uclips;
++ compat_caddr_t p;
++ u32 clipcount;
++
++ if (copy_in_user(&up->w, &kp->w, sizeof(kp->w)) ||
++ assign_in_user(&up->field, &kp->field) ||
++ assign_in_user(&up->chromakey, &kp->chromakey) ||
++ assign_in_user(&up->global_alpha, &kp->global_alpha) ||
++ get_user(clipcount, &kp->clipcount) ||
++ put_user(clipcount, &up->clipcount))
+ return -EFAULT;
+- return 0;
+-}
++ if (!clipcount)
++ return 0;
+
+-static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
+-{
+- if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
++ if (get_user(p, &up->clips))
+ return -EFAULT;
++ uclips = compat_ptr(p);
++ while (clipcount--) {
++ if (copy_in_user(&uclips->c, &kclips->c, sizeof(uclips->c)))
++ return -EFAULT;
++ uclips++;
++ kclips++;
++ }
+ return 0;
+ }
+
+@@ -176,91 +157,150 @@ struct v4l2_create_buffers32 {
+ __u32 reserved[8];
+ };
+
+-static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
++static int __bufsize_v4l2_format(struct v4l2_format32 __user *up, u32 *size)
+ {
+- if (get_user(kp->type, &up->type))
++ u32 type;
++
++ if (get_user(type, &up->type))
+ return -EFAULT;
+
+- switch (kp->type) {
++ switch (type) {
++ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
++ case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
++ u32 clipcount;
++
++ if (get_user(clipcount, &up->fmt.win.clipcount))
++ return -EFAULT;
++ if (clipcount > 2048)
++ return -EINVAL;
++ *size = clipcount * sizeof(struct v4l2_clip);
++ return 0;
++ }
++ default:
++ *size = 0;
++ return 0;
++ }
++}
++
++static int bufsize_v4l2_format(struct v4l2_format32 __user *up, u32 *size)
++{
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)))
++ return -EFAULT;
++ return __bufsize_v4l2_format(up, size);
++}
++
++static int __get_v4l2_format32(struct v4l2_format __user *kp,
++ struct v4l2_format32 __user *up,
++ void __user *aux_buf, u32 aux_space)
++{
++ u32 type;
++
++ if (get_user(type, &up->type) || put_user(type, &kp->type))
++ return -EFAULT;
++
++ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+- return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
++ return copy_in_user(&kp->fmt.pix, &up->fmt.pix,
++ sizeof(kp->fmt.pix)) ? -EFAULT : 0;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+- return get_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
+- &up->fmt.pix_mp);
++ return copy_in_user(&kp->fmt.pix_mp, &up->fmt.pix_mp,
++ sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0;
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
+- return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
++ return get_v4l2_window32(&kp->fmt.win, &up->fmt.win,
++ aux_buf, aux_space);
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+- return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
++ return copy_in_user(&kp->fmt.vbi, &up->fmt.vbi,
++ sizeof(kp->fmt.vbi)) ? -EFAULT : 0;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+- return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
++ return copy_in_user(&kp->fmt.sliced, &up->fmt.sliced,
++ sizeof(kp->fmt.sliced)) ? -EFAULT : 0;
+ default:
+- printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
+- kp->type);
+ return -EINVAL;
+ }
+ }
+
+-static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
++static int get_v4l2_format32(struct v4l2_format __user *kp,
++ struct v4l2_format32 __user *up,
++ void __user *aux_buf, u32 aux_space)
+ {
+- if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)))
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)))
+ return -EFAULT;
+- return __get_v4l2_format32(kp, up);
++ return __get_v4l2_format32(kp, up, aux_buf, aux_space);
+ }
+
+-static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
++static int bufsize_v4l2_create(struct v4l2_create_buffers32 __user *up,
++ u32 *size)
+ {
+- if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_create_buffers32)) ||
+- copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format)))
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)))
+ return -EFAULT;
+- return __get_v4l2_format32(&kp->format, &up->format);
++ return __bufsize_v4l2_format(&up->format, size);
+ }
+
+-static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
++static int get_v4l2_create32(struct v4l2_create_buffers __user *kp,
++ struct v4l2_create_buffers32 __user *up,
++ void __user *aux_buf, u32 aux_space)
+ {
+- if (put_user(kp->type, &up->type))
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ copy_in_user(kp, up,
++ offsetof(struct v4l2_create_buffers32, format)))
+ return -EFAULT;
++ return __get_v4l2_format32(&kp->format, &up->format,
++ aux_buf, aux_space);
++}
++
++static int __put_v4l2_format32(struct v4l2_format __user *kp,
++ struct v4l2_format32 __user *up)
++{
++ u32 type;
+
+- switch (kp->type) {
++ if (get_user(type, &kp->type))
++ return -EFAULT;
++
++ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+- return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
++ return copy_in_user(&up->fmt.pix, &kp->fmt.pix,
++ sizeof(kp->fmt.pix)) ? -EFAULT : 0;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+- return put_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
+- &up->fmt.pix_mp);
++ return copy_in_user(&up->fmt.pix_mp, &kp->fmt.pix_mp,
++ sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0;
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
+ return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+- return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
++ return copy_in_user(&up->fmt.vbi, &kp->fmt.vbi,
++ sizeof(kp->fmt.vbi)) ? -EFAULT : 0;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+- return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
++ return copy_in_user(&up->fmt.sliced, &kp->fmt.sliced,
++ sizeof(kp->fmt.sliced)) ? -EFAULT : 0;
+ default:
+- printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
+- kp->type);
+ return -EINVAL;
+ }
+ }
+
+-static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
++static int put_v4l2_format32(struct v4l2_format __user *kp,
++ struct v4l2_format32 __user *up)
+ {
+- if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)))
++ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)))
+ return -EFAULT;
+ return __put_v4l2_format32(kp, up);
+ }
+
+-static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
++static int put_v4l2_create32(struct v4l2_create_buffers __user *kp,
++ struct v4l2_create_buffers32 __user *up)
+ {
+- if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) ||
+- copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format)) ||
+- copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved)))
++ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
++ copy_in_user(up, kp,
++ offsetof(struct v4l2_create_buffers32, format)) ||
++ copy_in_user(up->reserved, kp->reserved, sizeof(kp->reserved)))
+ return -EFAULT;
+ return __put_v4l2_format32(&kp->format, &up->format);
+ }
+@@ -274,25 +314,28 @@ struct v4l2_standard32 {
+ __u32 reserved[4];
+ };
+
+-static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
++static int get_v4l2_standard32(struct v4l2_standard __user *kp,
++ struct v4l2_standard32 __user *up)
+ {
+ /* other fields are not set by the user, nor used by the driver */
+- if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
+- get_user(kp->index, &up->index))
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ assign_in_user(&kp->index, &up->index))
+ return -EFAULT;
+ return 0;
+ }
+
+-static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
++static int put_v4l2_standard32(struct v4l2_standard __user *kp,
++ struct v4l2_standard32 __user *up)
+ {
+- if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
+- put_user(kp->index, &up->index) ||
+- copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
+- copy_to_user(up->name, kp->name, 24) ||
+- copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
+- put_user(kp->framelines, &up->framelines) ||
+- copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
+- return -EFAULT;
++ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
++ assign_in_user(&up->index, &kp->index) ||
++ copy_in_user(&up->id, &kp->id, sizeof(up->id)) ||
++ copy_in_user(up->name, kp->name, sizeof(up->name)) ||
++ copy_in_user(&up->frameperiod, &kp->frameperiod,
++ sizeof(up->frameperiod)) ||
++ assign_in_user(&up->framelines, &kp->framelines) ||
++ copy_in_user(up->reserved, kp->reserved, sizeof(up->reserved)))
++ return -EFAULT;
+ return 0;
+ }
+
+@@ -331,134 +374,186 @@ struct v4l2_buffer32 {
+ __u32 reserved;
+ };
+
+-static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32,
+- enum v4l2_memory memory)
++static int get_v4l2_plane32(struct v4l2_plane __user *up,
++ struct v4l2_plane32 __user *up32,
++ enum v4l2_memory memory)
+ {
+- void __user *up_pln;
+- compat_long_t p;
++ compat_ulong_t p;
+
+ if (copy_in_user(up, up32, 2 * sizeof(__u32)) ||
+- copy_in_user(&up->data_offset, &up32->data_offset,
+- sizeof(__u32)))
++ copy_in_user(&up->data_offset, &up32->data_offset,
++ sizeof(up->data_offset)))
+ return -EFAULT;
+
+- if (memory == V4L2_MEMORY_USERPTR) {
+- if (get_user(p, &up32->m.userptr))
+- return -EFAULT;
+- up_pln = compat_ptr(p);
+- if (put_user((unsigned long)up_pln, &up->m.userptr))
++ switch (memory) {
++ case V4L2_MEMORY_MMAP:
++ case V4L2_MEMORY_OVERLAY:
++ if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset,
++ sizeof(up32->m.mem_offset)))
+ return -EFAULT;
+- } else if (memory == V4L2_MEMORY_DMABUF) {
+- if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(int)))
++ break;
++ case V4L2_MEMORY_USERPTR:
++ if (get_user(p, &up32->m.userptr) ||
++ put_user((unsigned long)compat_ptr(p), &up->m.userptr))
+ return -EFAULT;
+- } else {
+- if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset,
+- sizeof(__u32)))
++ break;
++ case V4L2_MEMORY_DMABUF:
++ if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(up32->m.fd)))
+ return -EFAULT;
++ break;
+ }
+
+ return 0;
+ }
+
+-static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32,
+- enum v4l2_memory memory)
++static int put_v4l2_plane32(struct v4l2_plane __user *up,
++ struct v4l2_plane32 __user *up32,
++ enum v4l2_memory memory)
+ {
++ unsigned long p;
++
+ if (copy_in_user(up32, up, 2 * sizeof(__u32)) ||
+- copy_in_user(&up32->data_offset, &up->data_offset,
+- sizeof(__u32)))
++ copy_in_user(&up32->data_offset, &up->data_offset,
++ sizeof(up->data_offset)))
+ return -EFAULT;
+
+- /* For MMAP, driver might've set up the offset, so copy it back.
+- * USERPTR stays the same (was userspace-provided), so no copying. */
+- if (memory == V4L2_MEMORY_MMAP)
++ switch (memory) {
++ case V4L2_MEMORY_MMAP:
++ case V4L2_MEMORY_OVERLAY:
+ if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset,
+- sizeof(__u32)))
++ sizeof(up->m.mem_offset)))
+ return -EFAULT;
+- /* For DMABUF, driver might've set up the fd, so copy it back. */
+- if (memory == V4L2_MEMORY_DMABUF)
+- if (copy_in_user(&up32->m.fd, &up->m.fd,
+- sizeof(int)))
++ break;
++ case V4L2_MEMORY_USERPTR:
++ if (get_user(p, &up->m.userptr) ||
++ put_user((compat_ulong_t)ptr_to_compat((__force void *)p),
++ &up32->m.userptr))
++ return -EFAULT;
++ break;
++ case V4L2_MEMORY_DMABUF:
++ if (copy_in_user(&up32->m.fd, &up->m.fd, sizeof(up->m.fd)))
+ return -EFAULT;
++ break;
++ }
++
++ return 0;
++}
++
++static int bufsize_v4l2_buffer(struct v4l2_buffer32 __user *up, u32 *size)
++{
++ u32 type;
++ u32 length;
++
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ get_user(type, &up->type) ||
++ get_user(length, &up->length))
++ return -EFAULT;
+
++ if (V4L2_TYPE_IS_MULTIPLANAR(type)) {
++ if (length > VIDEO_MAX_PLANES)
++ return -EINVAL;
++
++ /*
++ * We don't really care if userspace decides to kill itself
++ * by passing a very big length value
++ */
++ *size = length * sizeof(struct v4l2_plane);
++ } else {
++ *size = 0;
++ }
+ return 0;
+ }
+
+-static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
++static int get_v4l2_buffer32(struct v4l2_buffer __user *kp,
++ struct v4l2_buffer32 __user *up,
++ void __user *aux_buf, u32 aux_space)
+ {
++ u32 type;
++ u32 length;
++ enum v4l2_memory memory;
+ struct v4l2_plane32 __user *uplane32;
+ struct v4l2_plane __user *uplane;
+ compat_caddr_t p;
+- int num_planes;
+ int ret;
+
+- if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
+- get_user(kp->index, &up->index) ||
+- get_user(kp->type, &up->type) ||
+- get_user(kp->flags, &up->flags) ||
+- get_user(kp->memory, &up->memory) ||
+- get_user(kp->length, &up->length))
+- return -EFAULT;
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ assign_in_user(&kp->index, &up->index) ||
++ get_user(type, &up->type) ||
++ put_user(type, &kp->type) ||
++ assign_in_user(&kp->flags, &up->flags) ||
++ get_user(memory, &up->memory) ||
++ put_user(memory, &kp->memory) ||
++ get_user(length, &up->length) ||
++ put_user(length, &kp->length))
++ return -EFAULT;
+
+- if (V4L2_TYPE_IS_OUTPUT(kp->type))
+- if (get_user(kp->bytesused, &up->bytesused) ||
+- get_user(kp->field, &up->field) ||
+- get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
+- get_user(kp->timestamp.tv_usec,
+- &up->timestamp.tv_usec))
++ if (V4L2_TYPE_IS_OUTPUT(type))
++ if (assign_in_user(&kp->bytesused, &up->bytesused) ||
++ assign_in_user(&kp->field, &up->field) ||
++ assign_in_user(&kp->timestamp.tv_sec,
++ &up->timestamp.tv_sec) ||
++ assign_in_user(&kp->timestamp.tv_usec,
++ &up->timestamp.tv_usec))
+ return -EFAULT;
+
+- if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
+- num_planes = kp->length;
++ if (V4L2_TYPE_IS_MULTIPLANAR(type)) {
++ u32 num_planes = length;
++
+ if (num_planes == 0) {
+- kp->m.planes = NULL;
+- /* num_planes == 0 is legal, e.g. when userspace doesn't
+- * need planes array on DQBUF*/
+- return 0;
++ /*
++ * num_planes == 0 is legal, e.g. when userspace doesn't
++ * need planes array on DQBUF
++ */
++ return put_user(NULL, &kp->m.planes);
+ }
++ if (num_planes > VIDEO_MAX_PLANES)
++ return -EINVAL;
+
+ if (get_user(p, &up->m.planes))
+ return -EFAULT;
+
+ uplane32 = compat_ptr(p);
+ if (!access_ok(VERIFY_READ, uplane32,
+- num_planes * sizeof(struct v4l2_plane32)))
++ num_planes * sizeof(*uplane32)))
+ return -EFAULT;
+
+- /* We don't really care if userspace decides to kill itself
+- * by passing a very big num_planes value */
+- uplane = compat_alloc_user_space(num_planes *
+- sizeof(struct v4l2_plane));
+- kp->m.planes = (__force struct v4l2_plane *)uplane;
++ /*
++ * We don't really care if userspace decides to kill itself
++ * by passing a very big num_planes value
++ */
++ if (aux_space < num_planes * sizeof(*uplane))
++ return -EFAULT;
++
++ uplane = aux_buf;
++ if (put_user((__force struct v4l2_plane *)uplane,
++ &kp->m.planes))
++ return -EFAULT;
+
+- while (--num_planes >= 0) {
+- ret = get_v4l2_plane32(uplane, uplane32, kp->memory);
++ while (num_planes--) {
++ ret = get_v4l2_plane32(uplane, uplane32, memory);
+ if (ret)
+ return ret;
+- ++uplane;
+- ++uplane32;
++ uplane++;
++ uplane32++;
+ }
+ } else {
+- switch (kp->memory) {
++ switch (memory) {
+ case V4L2_MEMORY_MMAP:
+- if (get_user(kp->m.offset, &up->m.offset))
++ case V4L2_MEMORY_OVERLAY:
++ if (assign_in_user(&kp->m.offset, &up->m.offset))
+ return -EFAULT;
+ break;
+- case V4L2_MEMORY_USERPTR:
+- {
+- compat_long_t tmp;
++ case V4L2_MEMORY_USERPTR: {
++ compat_ulong_t userptr;
+
+- if (get_user(tmp, &up->m.userptr))
+- return -EFAULT;
+-
+- kp->m.userptr = (unsigned long)compat_ptr(tmp);
+- }
+- break;
+- case V4L2_MEMORY_OVERLAY:
+- if (get_user(kp->m.offset, &up->m.offset))
++ if (get_user(userptr, &up->m.userptr) ||
++ put_user((unsigned long)compat_ptr(userptr),
++ &kp->m.userptr))
+ return -EFAULT;
+ break;
++ }
+ case V4L2_MEMORY_DMABUF:
+- if (get_user(kp->m.fd, &up->m.fd))
++ if (assign_in_user(&kp->m.fd, &up->m.fd))
+ return -EFAULT;
+ break;
+ }
+@@ -467,65 +562,70 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
+ return 0;
+ }
+
+-static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
++static int put_v4l2_buffer32(struct v4l2_buffer __user *kp,
++ struct v4l2_buffer32 __user *up)
+ {
++ u32 type;
++ u32 length;
++ enum v4l2_memory memory;
+ struct v4l2_plane32 __user *uplane32;
+ struct v4l2_plane __user *uplane;
+ compat_caddr_t p;
+- int num_planes;
+ int ret;
+
+- if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
+- put_user(kp->index, &up->index) ||
+- put_user(kp->type, &up->type) ||
+- put_user(kp->flags, &up->flags) ||
+- put_user(kp->memory, &up->memory))
+- return -EFAULT;
++ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
++ assign_in_user(&up->index, &kp->index) ||
++ get_user(type, &kp->type) ||
++ put_user(type, &up->type) ||
++ assign_in_user(&up->flags, &kp->flags) ||
++ get_user(memory, &kp->memory) ||
++ put_user(memory, &up->memory))
++ return -EFAULT;
+
+- if (put_user(kp->bytesused, &up->bytesused) ||
+- put_user(kp->field, &up->field) ||
+- put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
+- put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
+- copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
+- put_user(kp->sequence, &up->sequence) ||
+- put_user(kp->reserved2, &up->reserved2) ||
+- put_user(kp->reserved, &up->reserved) ||
+- put_user(kp->length, &up->length))
+- return -EFAULT;
++ if (assign_in_user(&up->bytesused, &kp->bytesused) ||
++ assign_in_user(&up->field, &kp->field) ||
++ assign_in_user(&up->timestamp.tv_sec, &kp->timestamp.tv_sec) ||
++ assign_in_user(&up->timestamp.tv_usec, &kp->timestamp.tv_usec) ||
++ copy_in_user(&up->timecode, &kp->timecode, sizeof(kp->timecode)) ||
++ assign_in_user(&up->sequence, &kp->sequence) ||
++ assign_in_user(&up->reserved2, &kp->reserved2) ||
++ assign_in_user(&up->reserved, &kp->reserved) ||
++ get_user(length, &kp->length) ||
++ put_user(length, &up->length))
++ return -EFAULT;
++
++ if (V4L2_TYPE_IS_MULTIPLANAR(type)) {
++ u32 num_planes = length;
+
+- if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
+- num_planes = kp->length;
+ if (num_planes == 0)
+ return 0;
+
+- uplane = (__force struct v4l2_plane __user *)kp->m.planes;
++ if (get_user(uplane, ((__force struct v4l2_plane __user **)&kp->m.planes)))
++ return -EFAULT;
+ if (get_user(p, &up->m.planes))
+ return -EFAULT;
+ uplane32 = compat_ptr(p);
+
+- while (--num_planes >= 0) {
+- ret = put_v4l2_plane32(uplane, uplane32, kp->memory);
++ while (num_planes--) {
++ ret = put_v4l2_plane32(uplane, uplane32, memory);
+ if (ret)
+ return ret;
+ ++uplane;
+ ++uplane32;
+ }
+ } else {
+- switch (kp->memory) {
++ switch (memory) {
+ case V4L2_MEMORY_MMAP:
+- if (put_user(kp->m.offset, &up->m.offset))
++ case V4L2_MEMORY_OVERLAY:
++ if (assign_in_user(&up->m.offset, &kp->m.offset))
+ return -EFAULT;
+ break;
+ case V4L2_MEMORY_USERPTR:
+- if (put_user(kp->m.userptr, &up->m.userptr))
+- return -EFAULT;
+- break;
+- case V4L2_MEMORY_OVERLAY:
+- if (put_user(kp->m.offset, &up->m.offset))
++ if (assign_in_user(&up->m.userptr, &kp->m.userptr))
+ return -EFAULT;
+ break;
+ case V4L2_MEMORY_DMABUF:
+- if (put_user(kp->m.fd, &up->m.fd))
++ if (assign_in_user(&up->m.fd, &kp->m.fd))
+ return -EFAULT;
+ break;
+ }
+@@ -537,7 +637,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
+ struct v4l2_framebuffer32 {
+ __u32 capability;
+ __u32 flags;
+- compat_caddr_t base;
++ compat_caddr_t base;
+ struct {
+ __u32 width;
+ __u32 height;
+@@ -550,30 +650,33 @@ struct v4l2_framebuffer32 {
+ } fmt;
+ };
+
+-static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
++static int get_v4l2_framebuffer32(struct v4l2_framebuffer __user *kp,
++ struct v4l2_framebuffer32 __user *up)
+ {
+- u32 tmp;
+-
+- if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
+- get_user(tmp, &up->base) ||
+- get_user(kp->capability, &up->capability) ||
+- get_user(kp->flags, &up->flags) ||
+- copy_from_user(&kp->fmt, &up->fmt, sizeof(up->fmt)))
+- return -EFAULT;
+- kp->base = (__force void *)compat_ptr(tmp);
++ compat_caddr_t tmp;
++
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ get_user(tmp, &up->base) ||
++ put_user((__force void *)compat_ptr(tmp), &kp->base) ||
++ assign_in_user(&kp->capability, &up->capability) ||
++ assign_in_user(&kp->flags, &up->flags) ||
++ copy_in_user(&kp->fmt, &up->fmt, sizeof(kp->fmt)))
++ return -EFAULT;
+ return 0;
+ }
+
+-static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
++static int put_v4l2_framebuffer32(struct v4l2_framebuffer __user *kp,
++ struct v4l2_framebuffer32 __user *up)
+ {
+- u32 tmp = (u32)((unsigned long)kp->base);
+-
+- if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
+- put_user(tmp, &up->base) ||
+- put_user(kp->capability, &up->capability) ||
+- put_user(kp->flags, &up->flags) ||
+- copy_to_user(&up->fmt, &kp->fmt, sizeof(up->fmt)))
+- return -EFAULT;
++ void *base;
++
++ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
++ get_user(base, &kp->base) ||
++ put_user(ptr_to_compat(base), &up->base) ||
++ assign_in_user(&up->capability, &kp->capability) ||
++ assign_in_user(&up->flags, &kp->flags) ||
++ copy_in_user(&up->fmt, &kp->fmt, sizeof(kp->fmt)))
++ return -EFAULT;
+ return 0;
+ }
+
+@@ -585,31 +688,36 @@ struct v4l2_input32 {
+ __u32 tuner; /* Associated tuner */
+ v4l2_std_id std;
+ __u32 status;
+- __u32 reserved[4];
+-} __attribute__ ((packed));
++ __u32 capabilities;
++ __u32 reserved[3];
++};
+
+-/* The 64-bit v4l2_input struct has extra padding at the end of the struct.
+- Otherwise it is identical to the 32-bit version. */
+-static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
++/*
++ * The 64-bit v4l2_input struct has extra padding at the end of the struct.
++ * Otherwise it is identical to the 32-bit version.
++ */
++static inline int get_v4l2_input32(struct v4l2_input __user *kp,
++ struct v4l2_input32 __user *up)
+ {
+- if (copy_from_user(kp, up, sizeof(struct v4l2_input32)))
++ if (copy_in_user(kp, up, sizeof(*up)))
+ return -EFAULT;
+ return 0;
+ }
+
+-static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
++static inline int put_v4l2_input32(struct v4l2_input __user *kp,
++ struct v4l2_input32 __user *up)
+ {
+- if (copy_to_user(up, kp, sizeof(struct v4l2_input32)))
++ if (copy_in_user(up, kp, sizeof(*up)))
+ return -EFAULT;
+ return 0;
+ }
+
+ struct v4l2_ext_controls32 {
+- __u32 ctrl_class;
+- __u32 count;
+- __u32 error_idx;
+- __u32 reserved[2];
+- compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
++ __u32 ctrl_class;
++ __u32 count;
++ __u32 error_idx;
++ __u32 reserved[2];
++ compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
+ };
+
+ struct v4l2_ext_control32 {
+@@ -623,57 +731,95 @@ struct v4l2_ext_control32 {
+ };
+ } __attribute__ ((packed));
+
+-/* The following function really belong in v4l2-common, but that causes
+- a circular dependency between modules. We need to think about this, but
+- for now this will do. */
+-
+-/* Return non-zero if this control is a pointer type. Currently only
+- type STRING is a pointer type. */
+-static inline int ctrl_is_pointer(u32 id)
++/* Return true if this control is a pointer type. */
++static inline bool ctrl_is_pointer(struct file *file, u32 id)
+ {
+- switch (id) {
+- case V4L2_CID_RDS_TX_PS_NAME:
+- case V4L2_CID_RDS_TX_RADIO_TEXT:
+- return 1;
+- default:
+- return 0;
++ struct video_device *vdev = video_devdata(file);
++ struct v4l2_fh *fh = NULL;
++ struct v4l2_ctrl_handler *hdl = NULL;
++ struct v4l2_query_ext_ctrl qec = { id };
++ const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops;
++
++ if (test_bit(V4L2_FL_USES_V4L2_FH, &vdev->flags))
++ fh = file->private_data;
++
++ if (fh && fh->ctrl_handler)
++ hdl = fh->ctrl_handler;
++ else if (vdev->ctrl_handler)
++ hdl = vdev->ctrl_handler;
++
++ if (hdl) {
++ struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, id);
++
++ return ctrl && ctrl->is_ptr;
+ }
++
++ if (!ops || !ops->vidioc_query_ext_ctrl)
++ return false;
++
++ return !ops->vidioc_query_ext_ctrl(file, fh, &qec) &&
++ (qec.flags & V4L2_CTRL_FLAG_HAS_PAYLOAD);
++}
++
++static int bufsize_v4l2_ext_controls(struct v4l2_ext_controls32 __user *up,
++ u32 *size)
++{
++ u32 count;
++
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ get_user(count, &up->count))
++ return -EFAULT;
++ if (count > V4L2_CID_MAX_CTRLS)
++ return -EINVAL;
++ *size = count * sizeof(struct v4l2_ext_control);
++ return 0;
+ }
+
+-static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
++static int get_v4l2_ext_controls32(struct file *file,
++ struct v4l2_ext_controls __user *kp,
++ struct v4l2_ext_controls32 __user *up,
++ void __user *aux_buf, u32 aux_space)
+ {
+ struct v4l2_ext_control32 __user *ucontrols;
+ struct v4l2_ext_control __user *kcontrols;
+- int n;
++ u32 count;
++ u32 n;
+ compat_caddr_t p;
+
+- if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
+- get_user(kp->ctrl_class, &up->ctrl_class) ||
+- get_user(kp->count, &up->count) ||
+- get_user(kp->error_idx, &up->error_idx) ||
+- copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
+- return -EFAULT;
+- n = kp->count;
+- if (n == 0) {
+- kp->controls = NULL;
+- return 0;
+- }
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ assign_in_user(&kp->ctrl_class, &up->ctrl_class) ||
++ get_user(count, &up->count) ||
++ put_user(count, &kp->count) ||
++ assign_in_user(&kp->error_idx, &up->error_idx) ||
++ copy_in_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
++ return -EFAULT;
++
++ if (count == 0)
++ return put_user(NULL, &kp->controls);
++ if (count > V4L2_CID_MAX_CTRLS)
++ return -EINVAL;
+ if (get_user(p, &up->controls))
+ return -EFAULT;
+ ucontrols = compat_ptr(p);
+- if (!access_ok(VERIFY_READ, ucontrols,
+- n * sizeof(struct v4l2_ext_control32)))
++ if (!access_ok(VERIFY_READ, ucontrols, count * sizeof(*ucontrols)))
+ return -EFAULT;
+- kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
+- kp->controls = (__force struct v4l2_ext_control *)kcontrols;
+- while (--n >= 0) {
++ if (aux_space < count * sizeof(*kcontrols))
++ return -EFAULT;
++ kcontrols = aux_buf;
++ if (put_user((__force struct v4l2_ext_control *)kcontrols,
++ &kp->controls))
++ return -EFAULT;
++
++ for (n = 0; n < count; n++) {
+ u32 id;
+
+ if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols)))
+ return -EFAULT;
++
+ if (get_user(id, &kcontrols->id))
+ return -EFAULT;
+- if (ctrl_is_pointer(id)) {
++
++ if (ctrl_is_pointer(file, id)) {
+ void __user *s;
+
+ if (get_user(p, &ucontrols->string))
+@@ -688,43 +834,55 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
+ return 0;
+ }
+
+-static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
++static int put_v4l2_ext_controls32(struct file *file,
++ struct v4l2_ext_controls __user *kp,
++ struct v4l2_ext_controls32 __user *up)
+ {
+ struct v4l2_ext_control32 __user *ucontrols;
+- struct v4l2_ext_control __user *kcontrols =
+- (__force struct v4l2_ext_control __user *)kp->controls;
+- int n = kp->count;
++ struct v4l2_ext_control __user *kcontrols;
++ u32 count;
++ u32 n;
+ compat_caddr_t p;
+
+- if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
+- put_user(kp->ctrl_class, &up->ctrl_class) ||
+- put_user(kp->count, &up->count) ||
+- put_user(kp->error_idx, &up->error_idx) ||
+- copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
+- return -EFAULT;
+- if (!kp->count)
+- return 0;
++ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
++ assign_in_user(&up->ctrl_class, &kp->ctrl_class) ||
++ get_user(count, &kp->count) ||
++ put_user(count, &up->count) ||
++ assign_in_user(&up->error_idx, &kp->error_idx) ||
++ copy_in_user(up->reserved, kp->reserved, sizeof(up->reserved)) ||
++ get_user(kcontrols, &kp->controls))
++ return -EFAULT;
+
++ if (!count)
++ return 0;
+ if (get_user(p, &up->controls))
+ return -EFAULT;
+ ucontrols = compat_ptr(p);
+- if (!access_ok(VERIFY_WRITE, ucontrols,
+- n * sizeof(struct v4l2_ext_control32)))
++ if (!access_ok(VERIFY_WRITE, ucontrols, count * sizeof(*ucontrols)))
+ return -EFAULT;
+
+- while (--n >= 0) {
+- unsigned size = sizeof(*ucontrols);
++ for (n = 0; n < count; n++) {
++ unsigned int size = sizeof(*ucontrols);
+ u32 id;
+
+- if (get_user(id, &kcontrols->id))
++ if (get_user(id, &kcontrols->id) ||
++ put_user(id, &ucontrols->id) ||
++ assign_in_user(&ucontrols->size, &kcontrols->size) ||
++ copy_in_user(&ucontrols->reserved2, &kcontrols->reserved2,
++ sizeof(ucontrols->reserved2)))
+ return -EFAULT;
+- /* Do not modify the pointer when copying a pointer control.
+- The contents of the pointer was changed, not the pointer
+- itself. */
+- if (ctrl_is_pointer(id))
++
++ /*
++ * Do not modify the pointer when copying a pointer control.
++ * The contents of the pointer was changed, not the pointer
++ * itself.
++ */
++ if (ctrl_is_pointer(file, id))
+ size -= sizeof(ucontrols->value64);
++
+ if (copy_in_user(ucontrols, kcontrols, size))
+ return -EFAULT;
++
+ ucontrols++;
+ kcontrols++;
+ }
+@@ -743,18 +901,19 @@ struct v4l2_event32 {
+ __u32 reserved[8];
+ };
+
+-static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up)
++static int put_v4l2_event32(struct v4l2_event __user *kp,
++ struct v4l2_event32 __user *up)
+ {
+- if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_event32)) ||
+- put_user(kp->type, &up->type) ||
+- copy_to_user(&up->u, &kp->u, sizeof(kp->u)) ||
+- put_user(kp->pending, &up->pending) ||
+- put_user(kp->sequence, &up->sequence) ||
+- put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
+- put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) ||
+- put_user(kp->id, &up->id) ||
+- copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32)))
+- return -EFAULT;
++ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
++ assign_in_user(&up->type, &kp->type) ||
++ copy_in_user(&up->u, &kp->u, sizeof(kp->u)) ||
++ assign_in_user(&up->pending, &kp->pending) ||
++ assign_in_user(&up->sequence, &kp->sequence) ||
++ assign_in_user(&up->timestamp.tv_sec, &kp->timestamp.tv_sec) ||
++ assign_in_user(&up->timestamp.tv_nsec, &kp->timestamp.tv_nsec) ||
++ assign_in_user(&up->id, &kp->id) ||
++ copy_in_user(up->reserved, kp->reserved, sizeof(up->reserved)))
++ return -EFAULT;
+ return 0;
+ }
+
+@@ -766,32 +925,35 @@ struct v4l2_edid32 {
+ compat_caddr_t edid;
+ };
+
+-static int get_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up)
++static int get_v4l2_edid32(struct v4l2_edid __user *kp,
++ struct v4l2_edid32 __user *up)
+ {
+- u32 tmp;
+-
+- if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_edid32)) ||
+- get_user(kp->pad, &up->pad) ||
+- get_user(kp->start_block, &up->start_block) ||
+- get_user(kp->blocks, &up->blocks) ||
+- get_user(tmp, &up->edid) ||
+- copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
+- return -EFAULT;
+- kp->edid = (__force u8 *)compat_ptr(tmp);
++ compat_uptr_t tmp;
++
++ if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
++ assign_in_user(&kp->pad, &up->pad) ||
++ assign_in_user(&kp->start_block, &up->start_block) ||
++ assign_in_user(&kp->blocks, &up->blocks) ||
++ get_user(tmp, &up->edid) ||
++ put_user(compat_ptr(tmp), &kp->edid) ||
++ copy_in_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
++ return -EFAULT;
+ return 0;
+ }
+
+-static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up)
++static int put_v4l2_edid32(struct v4l2_edid __user *kp,
++ struct v4l2_edid32 __user *up)
+ {
+- u32 tmp = (u32)((unsigned long)kp->edid);
+-
+- if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_edid32)) ||
+- put_user(kp->pad, &up->pad) ||
+- put_user(kp->start_block, &up->start_block) ||
+- put_user(kp->blocks, &up->blocks) ||
+- put_user(tmp, &up->edid) ||
+- copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
+- return -EFAULT;
++ void *edid;
++
++ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
++ assign_in_user(&up->pad, &kp->pad) ||
++ assign_in_user(&up->start_block, &kp->start_block) ||
++ assign_in_user(&up->blocks, &kp->blocks) ||
++ get_user(edid, &kp->edid) ||
++ put_user(ptr_to_compat(edid), &up->edid) ||
++ copy_in_user(up->reserved, kp->reserved, sizeof(up->reserved)))
++ return -EFAULT;
+ return 0;
+ }
+
+@@ -807,7 +969,7 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up)
+ #define VIDIOC_ENUMINPUT32 _IOWR('V', 26, struct v4l2_input32)
+ #define VIDIOC_G_EDID32 _IOWR('V', 40, struct v4l2_edid32)
+ #define VIDIOC_S_EDID32 _IOWR('V', 41, struct v4l2_edid32)
+-#define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32)
++#define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32)
+ #define VIDIOC_G_EXT_CTRLS32 _IOWR('V', 71, struct v4l2_ext_controls32)
+ #define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32)
+ #define VIDIOC_TRY_EXT_CTRLS32 _IOWR('V', 73, struct v4l2_ext_controls32)
+@@ -823,22 +985,23 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up)
+ #define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32)
+ #define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32)
+
++static int alloc_userspace(unsigned int size, u32 aux_space,
++ void __user **up_native)
++{
++ *up_native = compat_alloc_user_space(size + aux_space);
++ if (!*up_native)
++ return -ENOMEM;
++ if (clear_user(*up_native, size))
++ return -EFAULT;
++ return 0;
++}
++
+ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ {
+- union {
+- struct v4l2_format v2f;
+- struct v4l2_buffer v2b;
+- struct v4l2_framebuffer v2fb;
+- struct v4l2_input v2i;
+- struct v4l2_standard v2s;
+- struct v4l2_ext_controls v2ecs;
+- struct v4l2_event v2ev;
+- struct v4l2_create_buffers v2crt;
+- struct v4l2_edid v2edid;
+- unsigned long vx;
+- int vi;
+- } karg;
+ void __user *up = compat_ptr(arg);
++ void __user *up_native = NULL;
++ void __user *aux_buf;
++ u32 aux_space;
+ int compatible_arg = 1;
+ long err = 0;
+
+@@ -877,30 +1040,52 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
+ case VIDIOC_STREAMOFF:
+ case VIDIOC_S_INPUT:
+ case VIDIOC_S_OUTPUT:
+- err = get_user(karg.vi, (s32 __user *)up);
++ err = alloc_userspace(sizeof(unsigned int), 0, &up_native);
++ if (!err && assign_in_user((unsigned int __user *)up_native,
++ (compat_uint_t __user *)up))
++ err = -EFAULT;
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_G_INPUT:
+ case VIDIOC_G_OUTPUT:
++ err = alloc_userspace(sizeof(unsigned int), 0, &up_native);
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_G_EDID:
+ case VIDIOC_S_EDID:
+- err = get_v4l2_edid32(&karg.v2edid, up);
++ err = alloc_userspace(sizeof(struct v4l2_edid), 0, &up_native);
++ if (!err)
++ err = get_v4l2_edid32(up_native, up);
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_G_FMT:
+ case VIDIOC_S_FMT:
+ case VIDIOC_TRY_FMT:
+- err = get_v4l2_format32(&karg.v2f, up);
++ err = bufsize_v4l2_format(up, &aux_space);
++ if (!err)
++ err = alloc_userspace(sizeof(struct v4l2_format),
++ aux_space, &up_native);
++ if (!err) {
++ aux_buf = up_native + sizeof(struct v4l2_format);
++ err = get_v4l2_format32(up_native, up,
++ aux_buf, aux_space);
++ }
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_CREATE_BUFS:
+- err = get_v4l2_create32(&karg.v2crt, up);
++ err = bufsize_v4l2_create(up, &aux_space);
++ if (!err)
++ err = alloc_userspace(sizeof(struct v4l2_create_buffers),
++ aux_space, &up_native);
++ if (!err) {
++ aux_buf = up_native + sizeof(struct v4l2_create_buffers);
++ err = get_v4l2_create32(up_native, up,
++ aux_buf, aux_space);
++ }
+ compatible_arg = 0;
+ break;
+
+@@ -908,36 +1093,63 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
+ case VIDIOC_QUERYBUF:
+ case VIDIOC_QBUF:
+ case VIDIOC_DQBUF:
+- err = get_v4l2_buffer32(&karg.v2b, up);
++ err = bufsize_v4l2_buffer(up, &aux_space);
++ if (!err)
++ err = alloc_userspace(sizeof(struct v4l2_buffer),
++ aux_space, &up_native);
++ if (!err) {
++ aux_buf = up_native + sizeof(struct v4l2_buffer);
++ err = get_v4l2_buffer32(up_native, up,
++ aux_buf, aux_space);
++ }
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_S_FBUF:
+- err = get_v4l2_framebuffer32(&karg.v2fb, up);
++ err = alloc_userspace(sizeof(struct v4l2_framebuffer), 0,
++ &up_native);
++ if (!err)
++ err = get_v4l2_framebuffer32(up_native, up);
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_G_FBUF:
++ err = alloc_userspace(sizeof(struct v4l2_framebuffer), 0,
++ &up_native);
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_ENUMSTD:
+- err = get_v4l2_standard32(&karg.v2s, up);
++ err = alloc_userspace(sizeof(struct v4l2_standard), 0,
++ &up_native);
++ if (!err)
++ err = get_v4l2_standard32(up_native, up);
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_ENUMINPUT:
+- err = get_v4l2_input32(&karg.v2i, up);
++ err = alloc_userspace(sizeof(struct v4l2_input), 0, &up_native);
++ if (!err)
++ err = get_v4l2_input32(up_native, up);
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_G_EXT_CTRLS:
+ case VIDIOC_S_EXT_CTRLS:
+ case VIDIOC_TRY_EXT_CTRLS:
+- err = get_v4l2_ext_controls32(&karg.v2ecs, up);
++ err = bufsize_v4l2_ext_controls(up, &aux_space);
++ if (!err)
++ err = alloc_userspace(sizeof(struct v4l2_ext_controls),
++ aux_space, &up_native);
++ if (!err) {
++ aux_buf = up_native + sizeof(struct v4l2_ext_controls);
++ err = get_v4l2_ext_controls32(file, up_native, up,
++ aux_buf, aux_space);
++ }
+ compatible_arg = 0;
+ break;
+ case VIDIOC_DQEVENT:
++ err = alloc_userspace(sizeof(struct v4l2_event), 0, &up_native);
+ compatible_arg = 0;
+ break;
+ }
+@@ -946,22 +1158,26 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
+
+ if (compatible_arg)
+ err = native_ioctl(file, cmd, (unsigned long)up);
+- else {
+- mm_segment_t old_fs = get_fs();
++ else
++ err = native_ioctl(file, cmd, (unsigned long)up_native);
+
+- set_fs(KERNEL_DS);
+- err = native_ioctl(file, cmd, (unsigned long)&karg);
+- set_fs(old_fs);
+- }
++ if (err == -ENOTTY)
++ return err;
+
+- /* Special case: even after an error we need to put the
+- results back for these ioctls since the error_idx will
+- contain information on which control failed. */
++ /*
++ * Special case: even after an error we need to put the
++ * results back for these ioctls since the error_idx will
++ * contain information on which control failed.
++ */
+ switch (cmd) {
+ case VIDIOC_G_EXT_CTRLS:
+ case VIDIOC_S_EXT_CTRLS:
+ case VIDIOC_TRY_EXT_CTRLS:
+- if (put_v4l2_ext_controls32(&karg.v2ecs, up))
++ if (put_v4l2_ext_controls32(file, up_native, up))
++ err = -EFAULT;
++ break;
++ case VIDIOC_S_EDID:
++ if (put_v4l2_edid32(up_native, up))
+ err = -EFAULT;
+ break;
+ }
+@@ -973,44 +1189,46 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
+ case VIDIOC_S_OUTPUT:
+ case VIDIOC_G_INPUT:
+ case VIDIOC_G_OUTPUT:
+- err = put_user(((s32)karg.vi), (s32 __user *)up);
++ if (assign_in_user((compat_uint_t __user *)up,
++ ((unsigned int __user *)up_native)))
++ err = -EFAULT;
+ break;
+
+ case VIDIOC_G_FBUF:
+- err = put_v4l2_framebuffer32(&karg.v2fb, up);
++ err = put_v4l2_framebuffer32(up_native, up);
+ break;
+
+ case VIDIOC_DQEVENT:
+- err = put_v4l2_event32(&karg.v2ev, up);
++ err = put_v4l2_event32(up_native, up);
+ break;
+
+ case VIDIOC_G_EDID:
+- case VIDIOC_S_EDID:
+- err = put_v4l2_edid32(&karg.v2edid, up);
++ err = put_v4l2_edid32(up_native, up);
+ break;
+
+ case VIDIOC_G_FMT:
+ case VIDIOC_S_FMT:
+ case VIDIOC_TRY_FMT:
+- err = put_v4l2_format32(&karg.v2f, up);
++ err = put_v4l2_format32(up_native, up);
+ break;
+
+ case VIDIOC_CREATE_BUFS:
+- err = put_v4l2_create32(&karg.v2crt, up);
++ err = put_v4l2_create32(up_native, up);
+ break;
+
++ case VIDIOC_PREPARE_BUF:
+ case VIDIOC_QUERYBUF:
+ case VIDIOC_QBUF:
+ case VIDIOC_DQBUF:
+- err = put_v4l2_buffer32(&karg.v2b, up);
++ err = put_v4l2_buffer32(up_native, up);
+ break;
+
+ case VIDIOC_ENUMSTD:
+- err = put_v4l2_standard32(&karg.v2s, up);
++ err = put_v4l2_standard32(up_native, up);
+ break;
+
+ case VIDIOC_ENUMINPUT:
+- err = put_v4l2_input32(&karg.v2i, up);
++ err = put_v4l2_input32(up_native, up);
+ break;
+ }
+ return err;
+diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
+index aa407cb5f830..7004477e7ffc 100644
+--- a/drivers/media/v4l2-core/v4l2-ioctl.c
++++ b/drivers/media/v4l2-core/v4l2-ioctl.c
+@@ -2552,8 +2552,11 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
+
+ /* Handles IOCTL */
+ err = func(file, cmd, parg);
+- if (err == -ENOIOCTLCMD)
++ if (err == -ENOTTY || err == -ENOIOCTLCMD) {
+ err = -ENOTTY;
++ goto out;
++ }
++
+ if (err == 0) {
+ if (cmd == VIDIOC_DQBUF)
+ trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
+diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
+index fd9b252e2b34..079ee4ae9436 100644
+--- a/drivers/media/v4l2-core/videobuf2-core.c
++++ b/drivers/media/v4l2-core/videobuf2-core.c
+@@ -2119,6 +2119,11 @@ static int vb2_internal_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, bool n
+ dprintk(1, "dqbuf of buffer %d, with state %d\n",
+ vb->v4l2_buf.index, vb->state);
+
++ /*
++ * After calling the VIDIOC_DQBUF V4L2_BUF_FLAG_DONE must be
++ * cleared.
++ */
++ b->flags &= ~V4L2_BUF_FLAG_DONE;
+ return 0;
+ }
+
+diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
+index 187f83629f7e..b1c5f02c3cab 100644
+--- a/drivers/message/fusion/mptbase.c
++++ b/drivers/message/fusion/mptbase.c
+@@ -6872,6 +6872,7 @@ mpt_print_ioc_summary(MPT_ADAPTER *ioc, char *buffer, int *size, int len, int sh
+ *size = y;
+ }
+
++#ifdef CONFIG_PROC_FS
+ static void seq_mpt_print_ioc_summary(MPT_ADAPTER *ioc, struct seq_file *m, int showlan)
+ {
+ char expVer[32];
+@@ -6903,6 +6904,7 @@ static void seq_mpt_print_ioc_summary(MPT_ADAPTER *ioc, struct seq_file *m, int
+
+ seq_putc(m, '\n');
+ }
++#endif
+
+ /**
+ * mpt_set_taskmgmt_in_progress_flag - set flags associated with task management
+diff --git a/drivers/mfd/twl4030-audio.c b/drivers/mfd/twl4030-audio.c
+index 0a1606480023..cc832d309599 100644
+--- a/drivers/mfd/twl4030-audio.c
++++ b/drivers/mfd/twl4030-audio.c
+@@ -159,13 +159,18 @@ unsigned int twl4030_audio_get_mclk(void)
+ EXPORT_SYMBOL_GPL(twl4030_audio_get_mclk);
+
+ static bool twl4030_audio_has_codec(struct twl4030_audio_data *pdata,
+- struct device_node *node)
++ struct device_node *parent)
+ {
++ struct device_node *node;
++
+ if (pdata && pdata->codec)
+ return true;
+
+- if (of_find_node_by_name(node, "codec"))
++ node = of_get_child_by_name(parent, "codec");
++ if (node) {
++ of_node_put(node);
+ return true;
++ }
+
+ return false;
+ }
+diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c
+index 6aacd205a774..aec1ab253f7f 100644
+--- a/drivers/mfd/twl6040.c
++++ b/drivers/mfd/twl6040.c
+@@ -97,12 +97,16 @@ static struct reg_default twl6040_patch[] = {
+ };
+
+
+-static bool twl6040_has_vibra(struct device_node *node)
++static bool twl6040_has_vibra(struct device_node *parent)
+ {
+-#ifdef CONFIG_OF
+- if (of_find_node_by_name(node, "vibra"))
++ struct device_node *node;
++
++ node = of_get_child_by_name(parent, "vibra");
++ if (node) {
++ of_node_put(node);
+ return true;
+-#endif
++ }
++
+ return false;
+ }
+
+diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig
+index 6bc1f94333a5..e956231de30f 100644
+--- a/drivers/mtd/chips/Kconfig
++++ b/drivers/mtd/chips/Kconfig
+@@ -66,6 +66,10 @@ endchoice
+ config MTD_CFI_GEOMETRY
+ bool "Specific CFI Flash geometry selection"
+ depends on MTD_CFI_ADV_OPTIONS
++ select MTD_MAP_BANK_WIDTH_1 if !(MTD_MAP_BANK_WIDTH_2 || \
++ MTD_MAP_BANK_WIDTH_4 || MTD_MAP_BANK_WIDTH_8 || \
++ MTD_MAP_BANK_WIDTH_16 || MTD_MAP_BANK_WIDTH_32)
++ select MTD_CFI_I1 if !(MTD_CFI_I2 || MTD_CFI_I4 || MTD_CFI_I8)
+ help
+ This option does not affect the code directly, but will enable
+ some other configuration options which would allow you to reduce
+diff --git a/drivers/mtd/maps/ck804xrom.c b/drivers/mtd/maps/ck804xrom.c
+index 0455166f05fa..4f206a99164c 100644
+--- a/drivers/mtd/maps/ck804xrom.c
++++ b/drivers/mtd/maps/ck804xrom.c
+@@ -112,8 +112,8 @@ static void ck804xrom_cleanup(struct ck804xrom_window *window)
+ }
+
+
+-static int ck804xrom_init_one(struct pci_dev *pdev,
+- const struct pci_device_id *ent)
++static int __init ck804xrom_init_one(struct pci_dev *pdev,
++ const struct pci_device_id *ent)
+ {
+ static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL };
+ u8 byte;
+diff --git a/drivers/mtd/maps/esb2rom.c b/drivers/mtd/maps/esb2rom.c
+index f784cf0caa13..a47b374b1b0c 100644
+--- a/drivers/mtd/maps/esb2rom.c
++++ b/drivers/mtd/maps/esb2rom.c
+@@ -144,8 +144,8 @@ static void esb2rom_cleanup(struct esb2rom_window *window)
+ pci_dev_put(window->pdev);
+ }
+
+-static int esb2rom_init_one(struct pci_dev *pdev,
+- const struct pci_device_id *ent)
++static int __init esb2rom_init_one(struct pci_dev *pdev,
++ const struct pci_device_id *ent)
+ {
+ static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL };
+ struct esb2rom_window *window = &esb2rom_window;
+diff --git a/drivers/mtd/maps/ichxrom.c b/drivers/mtd/maps/ichxrom.c
+index c7478e18f485..aa83e7b87cfe 100644
+--- a/drivers/mtd/maps/ichxrom.c
++++ b/drivers/mtd/maps/ichxrom.c
+@@ -57,10 +57,12 @@ static void ichxrom_cleanup(struct ichxrom_window *window)
+ {
+ struct ichxrom_map_info *map, *scratch;
+ u16 word;
++ int ret;
+
+ /* Disable writes through the rom window */
+- pci_read_config_word(window->pdev, BIOS_CNTL, &word);
+- pci_write_config_word(window->pdev, BIOS_CNTL, word & ~1);
++ ret = pci_read_config_word(window->pdev, BIOS_CNTL, &word);
++ if (!ret)
++ pci_write_config_word(window->pdev, BIOS_CNTL, word & ~1);
+ pci_dev_put(window->pdev);
+
+ /* Free all of the mtd devices */
+@@ -84,8 +86,8 @@ static void ichxrom_cleanup(struct ichxrom_window *window)
+ }
+
+
+-static int ichxrom_init_one(struct pci_dev *pdev,
+- const struct pci_device_id *ent)
++static int __init ichxrom_init_one(struct pci_dev *pdev,
++ const struct pci_device_id *ent)
+ {
+ static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL };
+ struct ichxrom_window *window = &ichxrom_window;
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index f84113fc7cb7..14a5f559e300 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -1889,6 +1889,7 @@ static int nand_write_oob_syndrome(struct mtd_info *mtd,
+ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
+ {
++ unsigned int max_bitflips = 0;
+ int page, realpage, chipnr;
+ struct nand_chip *chip = mtd->priv;
+ struct mtd_ecc_stats stats;
+@@ -1949,6 +1950,8 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+ nand_wait_ready(mtd);
+ }
+
++ max_bitflips = max_t(unsigned int, max_bitflips, ret);
++
+ readlen -= len;
+ if (!readlen)
+ break;
+@@ -1974,7 +1977,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+ if (mtd->ecc_stats.failed - stats.failed)
+ return -EBADMSG;
+
+- return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0;
++ return max_bitflips;
+ }
+
+ /**
+diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
+index c3ce81c1a716..54cf6fce9877 100644
+--- a/drivers/mtd/nand/sh_flctl.c
++++ b/drivers/mtd/nand/sh_flctl.c
+@@ -160,7 +160,7 @@ static void flctl_setup_dma(struct sh_flctl *flctl)
+
+ memset(&cfg, 0, sizeof(cfg));
+ cfg.direction = DMA_MEM_TO_DEV;
+- cfg.dst_addr = (dma_addr_t)FLDTFIFO(flctl);
++ cfg.dst_addr = flctl->fifo;
+ cfg.src_addr = 0;
+ ret = dmaengine_slave_config(flctl->chan_fifo0_tx, &cfg);
+ if (ret < 0)
+@@ -176,7 +176,7 @@ static void flctl_setup_dma(struct sh_flctl *flctl)
+
+ cfg.direction = DMA_DEV_TO_MEM;
+ cfg.dst_addr = 0;
+- cfg.src_addr = (dma_addr_t)FLDTFIFO(flctl);
++ cfg.src_addr = flctl->fifo;
+ ret = dmaengine_slave_config(flctl->chan_fifo0_rx, &cfg);
+ if (ret < 0)
+ goto err;
+@@ -1095,6 +1095,7 @@ static int flctl_probe(struct platform_device *pdev)
+ flctl->reg = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(flctl->reg))
+ return PTR_ERR(flctl->reg);
++ flctl->fifo = res->start + 0x24; /* FLDTFIFO */
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
+index 499b8e433d3d..1c8fdc3cec93 100644
+--- a/drivers/mtd/nand/sunxi_nand.c
++++ b/drivers/mtd/nand/sunxi_nand.c
+@@ -933,8 +933,14 @@ static int sunxi_nand_hw_common_ecc_ctrl_init(struct mtd_info *mtd,
+
+ /* Add ECC info retrieval from DT */
+ for (i = 0; i < ARRAY_SIZE(strengths); i++) {
+- if (ecc->strength <= strengths[i])
++ if (ecc->strength <= strengths[i]) {
++ /*
++ * Update ecc->strength value with the actual strength
++ * that will be used by the ECC engine.
++ */
++ ecc->strength = strengths[i];
+ break;
++ }
+ }
+
+ if (i >= ARRAY_SIZE(strengths)) {
+diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
+index df51d6025a90..0eeb248a287e 100644
+--- a/drivers/net/Kconfig
++++ b/drivers/net/Kconfig
+@@ -374,6 +374,9 @@ config XEN_NETDEV_BACKEND
+ config VMXNET3
+ tristate "VMware VMXNET3 ethernet driver"
+ depends on PCI && INET
++ depends on !(PAGE_SIZE_64KB || ARM64_64K_PAGES || \
++ IA64_PAGE_SIZE_64KB || MICROBLAZE_64K_PAGES || \
++ PARISC_PAGE_SIZE_64KB || PPC_64K_PAGES)
+ help
+ This driver supports VMware's vmxnet3 virtual ethernet NIC.
+ To compile this driver as a module, choose M here: the
+diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
+index 3b850f390fd7..7e6f36a59f06 100644
+--- a/drivers/net/can/usb/gs_usb.c
++++ b/drivers/net/can/usb/gs_usb.c
+@@ -430,7 +430,7 @@ static int gs_usb_set_bittiming(struct net_device *netdev)
+ dev_err(netdev->dev.parent, "Couldn't set bittimings (err=%d)",
+ rc);
+
+- return rc;
++ return (rc > 0) ? 0 : rc;
+ }
+
+ static void gs_usb_xmit_callback(struct urb *urb)
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+index ce44a033f63b..64cc86a82b2d 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+@@ -184,7 +184,7 @@ static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail)
+ void *cmd_head = pcan_usb_fd_cmd_buffer(dev);
+ int err = 0;
+ u8 *packet_ptr;
+- int i, n = 1, packet_len;
++ int packet_len;
+ ptrdiff_t cmd_len;
+
+ /* usb device unregistered? */
+@@ -201,17 +201,13 @@ static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail)
+ }
+
+ packet_ptr = cmd_head;
++ packet_len = cmd_len;
+
+ /* firmware is not able to re-assemble 512 bytes buffer in full-speed */
+- if ((dev->udev->speed != USB_SPEED_HIGH) &&
+- (cmd_len > PCAN_UFD_LOSPD_PKT_SIZE)) {
+- packet_len = PCAN_UFD_LOSPD_PKT_SIZE;
+- n += cmd_len / packet_len;
+- } else {
+- packet_len = cmd_len;
+- }
++ if (unlikely(dev->udev->speed != USB_SPEED_HIGH))
++ packet_len = min(packet_len, PCAN_UFD_LOSPD_PKT_SIZE);
+
+- for (i = 0; i < n; i++) {
++ do {
+ err = usb_bulk_msg(dev->udev,
+ usb_sndbulkpipe(dev->udev,
+ PCAN_USBPRO_EP_CMDOUT),
+@@ -224,7 +220,12 @@ static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail)
+ }
+
+ packet_ptr += packet_len;
+- }
++ cmd_len -= packet_len;
++
++ if (cmd_len < PCAN_UFD_LOSPD_PKT_SIZE)
++ packet_len = cmd_len;
++
++ } while (packet_len > 0);
+
+ return err;
+ }
+diff --git a/drivers/net/ethernet/3com/3c509.c b/drivers/net/ethernet/3com/3c509.c
+index 4547a1b8b958..7677c745fb30 100644
+--- a/drivers/net/ethernet/3com/3c509.c
++++ b/drivers/net/ethernet/3com/3c509.c
+@@ -562,7 +562,7 @@ static void el3_common_remove (struct net_device *dev)
+ }
+
+ #ifdef CONFIG_EISA
+-static int __init el3_eisa_probe (struct device *device)
++static int el3_eisa_probe(struct device *device)
+ {
+ short i;
+ int ioaddr, irq, if_port;
+diff --git a/drivers/net/ethernet/3com/3c59x.c b/drivers/net/ethernet/3com/3c59x.c
+index 41095ebad97f..8a876e97597c 100644
+--- a/drivers/net/ethernet/3com/3c59x.c
++++ b/drivers/net/ethernet/3com/3c59x.c
+@@ -907,7 +907,7 @@ static struct eisa_device_id vortex_eisa_ids[] = {
+ };
+ MODULE_DEVICE_TABLE(eisa, vortex_eisa_ids);
+
+-static int __init vortex_eisa_probe(struct device *device)
++static int vortex_eisa_probe(struct device *device)
+ {
+ void __iomem *ioaddr;
+ struct eisa_device *edev;
+diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c
+index 714905384900..5feddde71f18 100644
+--- a/drivers/net/ethernet/amd/xgbe/xgbe-main.c
++++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c
+@@ -553,7 +553,7 @@ static int xgbe_remove(struct platform_device *pdev)
+ return 0;
+ }
+
+-#ifdef CONFIG_PM
++#ifdef CONFIG_PM_SLEEP
+ static int xgbe_suspend(struct device *dev)
+ {
+ struct net_device *netdev = dev_get_drvdata(dev);
+@@ -591,7 +591,7 @@ static int xgbe_resume(struct device *dev)
+
+ return ret;
+ }
+-#endif /* CONFIG_PM */
++#endif /* CONFIG_PM_SLEEP */
+
+ #ifdef CONFIG_ACPI
+ static const struct acpi_device_id xgbe_acpi_match[] = {
+diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
+index f9713fe036ef..7b150085e34d 100644
+--- a/drivers/net/ethernet/broadcom/tg3.c
++++ b/drivers/net/ethernet/broadcom/tg3.c
+@@ -14228,7 +14228,9 @@ static int tg3_change_mtu(struct net_device *dev, int new_mtu)
+ /* Reset PHY, otherwise the read DMA engine will be in a mode that
+ * breaks all requests to 256 bytes.
+ */
+- if (tg3_asic_rev(tp) == ASIC_REV_57766)
++ if (tg3_asic_rev(tp) == ASIC_REV_57766 ||
++ tg3_asic_rev(tp) == ASIC_REV_5717 ||
++ tg3_asic_rev(tp) == ASIC_REV_5719)
+ reset_phy = true;
+
+ err = tg3_restart_hw(tp, reset_phy);
+diff --git a/drivers/net/ethernet/brocade/bna/bfa_ioc.c b/drivers/net/ethernet/brocade/bna/bfa_ioc.c
+index 68f3c13c9ef6..5be892ffdaed 100644
+--- a/drivers/net/ethernet/brocade/bna/bfa_ioc.c
++++ b/drivers/net/ethernet/brocade/bna/bfa_ioc.c
+@@ -1948,13 +1948,13 @@ static void
+ bfa_ioc_send_enable(struct bfa_ioc *ioc)
+ {
+ struct bfi_ioc_ctrl_req enable_req;
+- struct timeval tv;
+
+ bfi_h2i_set(enable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_ENABLE_REQ,
+ bfa_ioc_portid(ioc));
+ enable_req.clscode = htons(ioc->clscode);
+- do_gettimeofday(&tv);
+- enable_req.tv_sec = ntohl(tv.tv_sec);
++ enable_req.rsvd = htons(0);
++ /* overflow in 2106 */
++ enable_req.tv_sec = ntohl(ktime_get_real_seconds());
+ bfa_ioc_mbox_send(ioc, &enable_req, sizeof(struct bfi_ioc_ctrl_req));
+ }
+
+@@ -1965,6 +1965,10 @@ bfa_ioc_send_disable(struct bfa_ioc *ioc)
+
+ bfi_h2i_set(disable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_DISABLE_REQ,
+ bfa_ioc_portid(ioc));
++ disable_req.clscode = htons(ioc->clscode);
++ disable_req.rsvd = htons(0);
++ /* overflow in 2106 */
++ disable_req.tv_sec = ntohl(ktime_get_real_seconds());
+ bfa_ioc_mbox_send(ioc, &disable_req, sizeof(struct bfi_ioc_ctrl_req));
+ }
+
+diff --git a/drivers/net/ethernet/dec/tulip/de4x5.c b/drivers/net/ethernet/dec/tulip/de4x5.c
+index badff181e719..37827819ae86 100644
+--- a/drivers/net/ethernet/dec/tulip/de4x5.c
++++ b/drivers/net/ethernet/dec/tulip/de4x5.c
+@@ -1990,7 +1990,7 @@ SetMulticastFilter(struct net_device *dev)
+
+ static u_char de4x5_irq[] = EISA_ALLOWED_IRQ_LIST;
+
+-static int __init de4x5_eisa_probe (struct device *gendev)
++static int de4x5_eisa_probe(struct device *gendev)
+ {
+ struct eisa_device *edev;
+ u_long iobase;
+diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
+index 3ea651afa63d..6075ed694a6c 100644
+--- a/drivers/net/ethernet/freescale/gianfar.c
++++ b/drivers/net/ethernet/freescale/gianfar.c
+@@ -1413,9 +1413,11 @@ static int gfar_probe(struct platform_device *ofdev)
+
+ gfar_init_addr_hash_table(priv);
+
+- /* Insert receive time stamps into padding alignment bytes */
++ /* Insert receive time stamps into padding alignment bytes, and
++ * plus 2 bytes padding to ensure the cpu alignment.
++ */
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)
+- priv->padding = 8;
++ priv->padding = 8 + DEFAULT_PADDING;
+
+ if (dev->features & NETIF_F_IP_CSUM ||
+ priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)
+diff --git a/drivers/net/ethernet/hp/hp100.c b/drivers/net/ethernet/hp/hp100.c
+index ae6e30d39f0f..3daf2d4a7ca0 100644
+--- a/drivers/net/ethernet/hp/hp100.c
++++ b/drivers/net/ethernet/hp/hp100.c
+@@ -194,7 +194,6 @@ static const char *hp100_isa_tbl[] = {
+ };
+ #endif
+
+-#ifdef CONFIG_EISA
+ static struct eisa_device_id hp100_eisa_tbl[] = {
+ { "HWPF180" }, /* HP J2577 rev A */
+ { "HWP1920" }, /* HP 27248B */
+@@ -205,9 +204,7 @@ static struct eisa_device_id hp100_eisa_tbl[] = {
+ { "" } /* Mandatory final entry ! */
+ };
+ MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
+-#endif
+
+-#ifdef CONFIG_PCI
+ static const struct pci_device_id hp100_pci_tbl[] = {
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
+@@ -219,7 +216,6 @@ static const struct pci_device_id hp100_pci_tbl[] = {
+ {} /* Terminating entry */
+ };
+ MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
+-#endif
+
+ static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
+ static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
+@@ -2842,8 +2838,7 @@ static void cleanup_dev(struct net_device *d)
+ free_netdev(d);
+ }
+
+-#ifdef CONFIG_EISA
+-static int __init hp100_eisa_probe (struct device *gendev)
++static int hp100_eisa_probe(struct device *gendev)
+ {
+ struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
+ struct eisa_device *edev = to_eisa_device(gendev);
+@@ -2884,9 +2879,7 @@ static struct eisa_driver hp100_eisa_driver = {
+ .remove = hp100_eisa_remove,
+ }
+ };
+-#endif
+
+-#ifdef CONFIG_PCI
+ static int hp100_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+ {
+@@ -2955,7 +2948,6 @@ static struct pci_driver hp100_pci_driver = {
+ .probe = hp100_pci_probe,
+ .remove = hp100_pci_remove,
+ };
+-#endif
+
+ /*
+ * module section
+@@ -3032,23 +3024,17 @@ static int __init hp100_module_init(void)
+ err = hp100_isa_init();
+ if (err && err != -ENODEV)
+ goto out;
+-#ifdef CONFIG_EISA
+ err = eisa_driver_register(&hp100_eisa_driver);
+ if (err && err != -ENODEV)
+ goto out2;
+-#endif
+-#ifdef CONFIG_PCI
+ err = pci_register_driver(&hp100_pci_driver);
+ if (err && err != -ENODEV)
+ goto out3;
+-#endif
+ out:
+ return err;
+ out3:
+-#ifdef CONFIG_EISA
+ eisa_driver_unregister (&hp100_eisa_driver);
+ out2:
+-#endif
+ hp100_isa_cleanup();
+ goto out;
+ }
+@@ -3057,12 +3043,8 @@ static int __init hp100_module_init(void)
+ static void __exit hp100_module_exit(void)
+ {
+ hp100_isa_cleanup();
+-#ifdef CONFIG_EISA
+ eisa_driver_unregister (&hp100_eisa_driver);
+-#endif
+-#ifdef CONFIG_PCI
+ pci_unregister_driver (&hp100_pci_driver);
+-#endif
+ }
+
+ module_init(hp100_module_init)
+diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
+index e2498dbf3c3b..5e63a8931f2e 100644
+--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
++++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
+@@ -1345,6 +1345,9 @@ out:
+ * Checks to see of the link status of the hardware has changed. If a
+ * change in link status has been detected, then we read the PHY registers
+ * to get the current speed/duplex if link exists.
++ *
++ * Returns a negative error code (-E1000_ERR_*) or 0 (link down) or 1 (link
++ * up).
+ **/
+ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
+ {
+@@ -1360,7 +1363,7 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
+ * Change or Rx Sequence Error interrupt.
+ */
+ if (!mac->get_link_status)
+- return 0;
++ return 1;
+
+ /* First we want to see if the MII Status Register reports
+ * link. If so, then we want to get the current speed/duplex
+@@ -1519,10 +1522,12 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
+ * different link partner.
+ */
+ ret_val = e1000e_config_fc_after_link_up(hw);
+- if (ret_val)
++ if (ret_val) {
+ e_dbg("Error configuring flow control\n");
++ return ret_val;
++ }
+
+- return ret_val;
++ return 1;
+ }
+
+ static s32 e1000_get_variants_ich8lan(struct e1000_adapter *adapter)
+diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_iov.c b/drivers/net/ethernet/intel/fm10k/fm10k_iov.c
+index 5b08e6284a3c..8d8fd5d49d60 100644
+--- a/drivers/net/ethernet/intel/fm10k/fm10k_iov.c
++++ b/drivers/net/ethernet/intel/fm10k/fm10k_iov.c
+@@ -126,6 +126,9 @@ process_mbx:
+ struct fm10k_mbx_info *mbx = &vf_info->mbx;
+ u16 glort = vf_info->glort;
+
++ /* process the SM mailbox first to drain outgoing messages */
++ hw->mbx.ops.process(hw, &hw->mbx);
++
+ /* verify port mapping is valid, if not reset port */
+ if (vf_info->vf_flags && !fm10k_glort_valid_pf(hw, glort))
+ hw->iov.ops.reset_lport(hw, vf_info);
+diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
+index 13e0cf90e567..042f3486f79a 100644
+--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
++++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
+@@ -3894,8 +3894,12 @@ static void i40e_napi_enable_all(struct i40e_vsi *vsi)
+ if (!vsi->netdev)
+ return;
+
+- for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
+- napi_enable(&vsi->q_vectors[q_idx]->napi);
++ for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
++ struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
++
++ if (q_vector->rx.ring || q_vector->tx.ring)
++ napi_enable(&q_vector->napi);
++ }
+ }
+
+ /**
+@@ -3909,8 +3913,12 @@ static void i40e_napi_disable_all(struct i40e_vsi *vsi)
+ if (!vsi->netdev)
+ return;
+
+- for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
+- napi_disable(&vsi->q_vectors[q_idx]->napi);
++ for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
++ struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
++
++ if (q_vector->rx.ring || q_vector->tx.ring)
++ napi_disable(&q_vector->napi);
++ }
+ }
+
+ /**
+diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
+index 34f15f56b2a1..cfcafea9d2b6 100644
+--- a/drivers/net/ethernet/intel/igb/igb_main.c
++++ b/drivers/net/ethernet/intel/igb/igb_main.c
+@@ -2998,6 +2998,8 @@ static int igb_sw_init(struct igb_adapter *adapter)
+ /* Setup and initialize a copy of the hw vlan table array */
+ adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32),
+ GFP_ATOMIC);
++ if (!adapter->shadow_vfta)
++ return -ENOMEM;
+
+ /* This call may decrease the number of queues */
+ if (igb_init_interrupt_scheme(adapter, true)) {
+@@ -3167,7 +3169,7 @@ static int __igb_close(struct net_device *netdev, bool suspending)
+
+ static int igb_close(struct net_device *netdev)
+ {
+- if (netif_device_present(netdev))
++ if (netif_device_present(netdev) || netdev->dismantle)
+ return __igb_close(netdev, false);
+ return 0;
+ }
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+index 06d8f3cfa099..14f789e72c29 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+@@ -3609,10 +3609,10 @@ s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
+ fw_cmd.ver_build = build;
+ fw_cmd.ver_sub = sub;
+ fw_cmd.hdr.checksum = 0;
+- fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
+- (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
+ fw_cmd.pad = 0;
+ fw_cmd.pad2 = 0;
++ fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
++ (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
+
+ for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
+ ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+index cf5cf819a6b8..0e1e63ee6c5e 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+@@ -224,6 +224,8 @@ static s32 ixgbe_read_ee_hostif_buffer_X550(struct ixgbe_hw *hw,
+ /* convert offset from words to bytes */
+ buffer.address = cpu_to_be32((offset + current_word) * 2);
+ buffer.length = cpu_to_be16(words_to_read * 2);
++ buffer.pad2 = 0;
++ buffer.pad3 = 0;
+
+ status = ixgbe_host_interface_command(hw, (u32 *)&buffer,
+ sizeof(buffer),
+diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c
+index fc2fb25343f4..c122b3b99cd8 100644
+--- a/drivers/net/ethernet/marvell/mvmdio.c
++++ b/drivers/net/ethernet/marvell/mvmdio.c
+@@ -241,7 +241,8 @@ static int orion_mdio_probe(struct platform_device *pdev)
+ dev->regs + MVMDIO_ERR_INT_MASK);
+
+ } else if (dev->err_interrupt == -EPROBE_DEFER) {
+- return -EPROBE_DEFER;
++ ret = -EPROBE_DEFER;
++ goto out_mdio;
+ }
+
+ mutex_init(&dev->lock);
+diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
+index 40161dacc9c7..744277984cb8 100644
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -858,6 +858,10 @@ static void mvneta_port_disable(struct mvneta_port *pp)
+ val &= ~MVNETA_GMAC0_PORT_ENABLE;
+ mvreg_write(pp, MVNETA_GMAC_CTRL_0, val);
+
++ pp->link = 0;
++ pp->duplex = -1;
++ pp->speed = 0;
++
+ udelay(200);
+ }
+
+diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
+index 3e8b1bfb1f2e..eda6b0a2faf4 100644
+--- a/drivers/net/ethernet/marvell/mvpp2.c
++++ b/drivers/net/ethernet/marvell/mvpp2.c
+@@ -5583,6 +5583,7 @@ static void mvpp2_set_rx_mode(struct net_device *dev)
+ int id = port->id;
+ bool allmulti = dev->flags & IFF_ALLMULTI;
+
++retry:
+ mvpp2_prs_mac_promisc_set(priv, id, dev->flags & IFF_PROMISC);
+ mvpp2_prs_mac_multi_set(priv, id, MVPP2_PE_MAC_MC_ALL, allmulti);
+ mvpp2_prs_mac_multi_set(priv, id, MVPP2_PE_MAC_MC_IP6, allmulti);
+@@ -5590,9 +5591,13 @@ static void mvpp2_set_rx_mode(struct net_device *dev)
+ /* Remove all port->id's mcast enries */
+ mvpp2_prs_mcast_del_all(priv, id);
+
+- if (allmulti && !netdev_mc_empty(dev)) {
+- netdev_for_each_mc_addr(ha, dev)
+- mvpp2_prs_mac_da_accept(priv, id, ha->addr, true);
++ if (!allmulti) {
++ netdev_for_each_mc_addr(ha, dev) {
++ if (mvpp2_prs_mac_da_accept(priv, id, ha->addr, true)) {
++ allmulti = true;
++ goto retry;
++ }
++ }
+ }
+ }
+
+diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
+index b75214a80d0e..eb1dcb7e9e96 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
++++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
+@@ -280,6 +280,9 @@ void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt)
+ u64 in_param = 0;
+ int err;
+
++ if (!cnt)
++ return;
++
+ if (mlx4_is_mfunc(dev)) {
+ set_param_l(&in_param, base_qpn);
+ set_param_h(&in_param, cnt);
+diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+index dd618d7ed257..1c40c524f0c8 100644
+--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
++++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+@@ -3825,7 +3825,7 @@ static void qlcnic_83xx_flush_mbx_queue(struct qlcnic_adapter *adapter)
+ struct list_head *head = &mbx->cmd_q;
+ struct qlcnic_cmd_args *cmd = NULL;
+
+- spin_lock(&mbx->queue_lock);
++ spin_lock_bh(&mbx->queue_lock);
+
+ while (!list_empty(head)) {
+ cmd = list_entry(head->next, struct qlcnic_cmd_args, list);
+@@ -3836,7 +3836,7 @@ static void qlcnic_83xx_flush_mbx_queue(struct qlcnic_adapter *adapter)
+ qlcnic_83xx_notify_cmd_completion(adapter, cmd);
+ }
+
+- spin_unlock(&mbx->queue_lock);
++ spin_unlock_bh(&mbx->queue_lock);
+ }
+
+ static int qlcnic_83xx_check_mbx_status(struct qlcnic_adapter *adapter)
+@@ -3872,12 +3872,12 @@ static void qlcnic_83xx_dequeue_mbx_cmd(struct qlcnic_adapter *adapter,
+ {
+ struct qlcnic_mailbox *mbx = adapter->ahw->mailbox;
+
+- spin_lock(&mbx->queue_lock);
++ spin_lock_bh(&mbx->queue_lock);
+
+ list_del(&cmd->list);
+ mbx->num_cmds--;
+
+- spin_unlock(&mbx->queue_lock);
++ spin_unlock_bh(&mbx->queue_lock);
+
+ qlcnic_83xx_notify_cmd_completion(adapter, cmd);
+ }
+@@ -3942,7 +3942,7 @@ static int qlcnic_83xx_enqueue_mbx_cmd(struct qlcnic_adapter *adapter,
+ init_completion(&cmd->completion);
+ cmd->rsp_opcode = QLC_83XX_MBX_RESPONSE_UNKNOWN;
+
+- spin_lock(&mbx->queue_lock);
++ spin_lock_bh(&mbx->queue_lock);
+
+ list_add_tail(&cmd->list, &mbx->cmd_q);
+ mbx->num_cmds++;
+@@ -3950,7 +3950,7 @@ static int qlcnic_83xx_enqueue_mbx_cmd(struct qlcnic_adapter *adapter,
+ *timeout = cmd->total_cmds * QLC_83XX_MBX_TIMEOUT;
+ queue_work(mbx->work_q, &mbx->work);
+
+- spin_unlock(&mbx->queue_lock);
++ spin_unlock_bh(&mbx->queue_lock);
+
+ return 0;
+ }
+@@ -4046,15 +4046,15 @@ static void qlcnic_83xx_mailbox_worker(struct work_struct *work)
+ mbx->rsp_status = QLC_83XX_MBX_RESPONSE_WAIT;
+ spin_unlock_irqrestore(&mbx->aen_lock, flags);
+
+- spin_lock(&mbx->queue_lock);
++ spin_lock_bh(&mbx->queue_lock);
+
+ if (list_empty(head)) {
+- spin_unlock(&mbx->queue_lock);
++ spin_unlock_bh(&mbx->queue_lock);
+ return;
+ }
+ cmd = list_entry(head->next, struct qlcnic_cmd_args, list);
+
+- spin_unlock(&mbx->queue_lock);
++ spin_unlock_bh(&mbx->queue_lock);
+
+ mbx_ops->encode_cmd(adapter, cmd);
+ mbx_ops->nofity_fw(adapter, QLC_83XX_MBX_REQUEST);
+diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
+index af4b1f4c24d2..8004de976890 100644
+--- a/drivers/net/ethernet/realtek/r8169.c
++++ b/drivers/net/ethernet/realtek/r8169.c
+@@ -1375,7 +1375,7 @@ DECLARE_RTL_COND(rtl_ocp_tx_cond)
+ {
+ void __iomem *ioaddr = tp->mmio_addr;
+
+- return RTL_R8(IBISR0) & 0x02;
++ return RTL_R8(IBISR0) & 0x20;
+ }
+
+ static void rtl8168ep_stop_cmac(struct rtl8169_private *tp)
+@@ -1383,7 +1383,7 @@ static void rtl8168ep_stop_cmac(struct rtl8169_private *tp)
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ RTL_W8(IBCR2, RTL_R8(IBCR2) & ~0x01);
+- rtl_msleep_loop_wait_low(tp, &rtl_ocp_tx_cond, 50, 2000);
++ rtl_msleep_loop_wait_high(tp, &rtl_ocp_tx_cond, 50, 2000);
+ RTL_W8(IBISR0, RTL_R8(IBISR0) | 0x20);
+ RTL_W8(IBCR0, RTL_R8(IBCR0) & ~0x01);
+ }
+diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
+index e2dd94a91c15..0ae76e419482 100644
+--- a/drivers/net/ethernet/renesas/sh_eth.c
++++ b/drivers/net/ethernet/renesas/sh_eth.c
+@@ -3171,18 +3171,37 @@ static int sh_eth_drv_probe(struct platform_device *pdev)
+ /* ioremap the TSU registers */
+ if (mdp->cd->tsu) {
+ struct resource *rtsu;
++
+ rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+- mdp->tsu_addr = devm_ioremap_resource(&pdev->dev, rtsu);
+- if (IS_ERR(mdp->tsu_addr)) {
+- ret = PTR_ERR(mdp->tsu_addr);
++ if (!rtsu) {
++ dev_err(&pdev->dev, "no TSU resource\n");
++ ret = -ENODEV;
++ goto out_release;
++ }
++ /* We can only request the TSU region for the first port
++ * of the two sharing this TSU for the probe to succeed...
++ */
++ if (devno % 2 == 0 &&
++ !devm_request_mem_region(&pdev->dev, rtsu->start,
++ resource_size(rtsu),
++ dev_name(&pdev->dev))) {
++ dev_err(&pdev->dev, "can't request TSU resource.\n");
++ ret = -EBUSY;
++ goto out_release;
++ }
++ mdp->tsu_addr = devm_ioremap(&pdev->dev, rtsu->start,
++ resource_size(rtsu));
++ if (!mdp->tsu_addr) {
++ dev_err(&pdev->dev, "TSU region ioremap() failed.\n");
++ ret = -ENOMEM;
+ goto out_release;
+ }
+ mdp->port = devno % 2;
+ ndev->features = NETIF_F_HW_VLAN_CTAG_FILTER;
+ }
+
+- /* initialize first or needed device */
+- if (!devno || pd->needs_init) {
++ /* Need to init only the first port of the two sharing a TSU */
++ if (devno % 2 == 0) {
+ if (mdp->cd->chip_reset)
+ mdp->cd->chip_reset(ndev);
+
+diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
+index 691ec936e88d..a0f805142d42 100644
+--- a/drivers/net/ethernet/ti/tlan.c
++++ b/drivers/net/ethernet/ti/tlan.c
+@@ -610,8 +610,8 @@ err_out_regions:
+ #ifdef CONFIG_PCI
+ if (pdev)
+ pci_release_regions(pdev);
+-#endif
+ err_out:
++#endif
+ if (pdev)
+ pci_disable_device(pdev);
+ return rc;
+diff --git a/drivers/net/ethernet/xilinx/Kconfig b/drivers/net/ethernet/xilinx/Kconfig
+index 7b90a5eba099..9d6c252c1911 100644
+--- a/drivers/net/ethernet/xilinx/Kconfig
++++ b/drivers/net/ethernet/xilinx/Kconfig
+@@ -36,6 +36,7 @@ config XILINX_AXI_EMAC
+ config XILINX_LL_TEMAC
+ tristate "Xilinx LL TEMAC (LocalLink Tri-mode Ethernet MAC) driver"
+ depends on (PPC || MICROBLAZE)
++ depends on !64BIT || BROKEN
+ select PHYLIB
+ ---help---
+ This driver supports the Xilinx 10/100/1000 LocalLink TEMAC
+diff --git a/drivers/net/hippi/rrunner.c b/drivers/net/hippi/rrunner.c
+index 95c0b45a68fb..313e006f74fe 100644
+--- a/drivers/net/hippi/rrunner.c
++++ b/drivers/net/hippi/rrunner.c
+@@ -1381,8 +1381,8 @@ static int rr_close(struct net_device *dev)
+ rrpriv->info_dma);
+ rrpriv->info = NULL;
+
+- free_irq(pdev->irq, dev);
+ spin_unlock_irqrestore(&rrpriv->lock, flags);
++ free_irq(pdev->irq, dev);
+
+ return 0;
+ }
+diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
+index c30b5c300c05..f3cd85ecd795 100644
+--- a/drivers/net/ipvlan/ipvlan_core.c
++++ b/drivers/net/ipvlan/ipvlan_core.c
+@@ -345,6 +345,7 @@ static int ipvlan_process_v4_outbound(struct sk_buff *skb)
+ .flowi4_oif = dev_get_iflink(dev),
+ .flowi4_tos = RT_TOS(ip4h->tos),
+ .flowi4_flags = FLOWI_FLAG_ANYSRC,
++ .flowi4_mark = skb->mark,
+ .daddr = ip4h->daddr,
+ .saddr = ip4h->saddr,
+ };
+diff --git a/drivers/net/irda/vlsi_ir.c b/drivers/net/irda/vlsi_ir.c
+index a0849f49bbec..c0192f97ecc8 100644
+--- a/drivers/net/irda/vlsi_ir.c
++++ b/drivers/net/irda/vlsi_ir.c
+@@ -418,8 +418,9 @@ static struct vlsi_ring *vlsi_alloc_ring(struct pci_dev *pdev, struct ring_descr
+ memset(rd, 0, sizeof(*rd));
+ rd->hw = hwmap + i;
+ rd->buf = kmalloc(len, GFP_KERNEL|GFP_DMA);
+- if (rd->buf == NULL ||
+- !(busaddr = pci_map_single(pdev, rd->buf, len, dir))) {
++ if (rd->buf)
++ busaddr = pci_map_single(pdev, rd->buf, len, dir);
++ if (rd->buf == NULL || pci_dma_mapping_error(pdev, busaddr)) {
+ if (rd->buf) {
+ net_err_ratelimited("%s: failed to create PCI-MAP for %p\n",
+ __func__, rd->buf);
+@@ -430,8 +431,7 @@ static struct vlsi_ring *vlsi_alloc_ring(struct pci_dev *pdev, struct ring_descr
+ rd = r->rd + j;
+ busaddr = rd_get_addr(rd);
+ rd_set_addr_status(rd, 0, 0);
+- if (busaddr)
+- pci_unmap_single(pdev, busaddr, len, dir);
++ pci_unmap_single(pdev, busaddr, len, dir);
+ kfree(rd->buf);
+ rd->buf = NULL;
+ }
+diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
+index fabf11d32d27..d4b8ea30cd9d 100644
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -105,7 +105,7 @@ static int at803x_set_wol(struct phy_device *phydev,
+ mac = (const u8 *) ndev->dev_addr;
+
+ if (!is_valid_ether_addr(mac))
+- return -EFAULT;
++ return -EINVAL;
+
+ for (i = 0; i < 3; i++) {
+ phy_write(phydev, AT803X_MMD_ACCESS_CONTROL,
+diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
+index d1c4bc1c4df0..31aa93907b77 100644
+--- a/drivers/net/ppp/pppoe.c
++++ b/drivers/net/ppp/pppoe.c
+@@ -860,6 +860,7 @@ static int pppoe_sendmsg(struct socket *sock, struct msghdr *m,
+ struct pppoe_hdr *ph;
+ struct net_device *dev;
+ char *start;
++ int hlen;
+
+ lock_sock(sk);
+ if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED)) {
+@@ -878,16 +879,16 @@ static int pppoe_sendmsg(struct socket *sock, struct msghdr *m,
+ if (total_len > (dev->mtu + dev->hard_header_len))
+ goto end;
+
+-
+- skb = sock_wmalloc(sk, total_len + dev->hard_header_len + 32,
+- 0, GFP_KERNEL);
++ hlen = LL_RESERVED_SPACE(dev);
++ skb = sock_wmalloc(sk, hlen + sizeof(*ph) + total_len +
++ dev->needed_tailroom, 0, GFP_KERNEL);
+ if (!skb) {
+ error = -ENOMEM;
+ goto end;
+ }
+
+ /* Reserve space for headers. */
+- skb_reserve(skb, dev->hard_header_len);
++ skb_reserve(skb, hlen);
+ skb_reset_network_header(skb);
+
+ skb->dev = dev;
+@@ -948,7 +949,7 @@ static int __pppoe_xmit(struct sock *sk, struct sk_buff *skb)
+ /* Copy the data if there is no space for the header or if it's
+ * read-only.
+ */
+- if (skb_cow_head(skb, sizeof(*ph) + dev->hard_header_len))
++ if (skb_cow_head(skb, LL_RESERVED_SPACE(dev) + sizeof(*ph)))
+ goto abort;
+
+ __skb_push(skb, sizeof(*ph));
+diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
+index 2b47cbae524c..9a9e0ea05a72 100644
+--- a/drivers/net/usb/Kconfig
++++ b/drivers/net/usb/Kconfig
+@@ -382,6 +382,10 @@ config USB_NET_RNDIS_HOST
+ The protocol specification is incomplete, and is controlled by
+ (and for) Microsoft; it isn't an "Open" ecosystem or market.
+
++config USB_NET_CDC_SUBSET_ENABLE
++ tristate
++ depends on USB_NET_CDC_SUBSET
++
+ config USB_NET_CDC_SUBSET
+ tristate "Simple USB Network Links (CDC Ethernet subset)"
+ depends on USB_USBNET
+@@ -400,6 +404,7 @@ config USB_NET_CDC_SUBSET
+ config USB_ALI_M5632
+ bool "ALi M5632 based 'USB 2.0 Data Link' cables"
+ depends on USB_NET_CDC_SUBSET
++ select USB_NET_CDC_SUBSET_ENABLE
+ help
+ Choose this option if you're using a host-to-host cable
+ based on this design, which supports USB 2.0 high speed.
+@@ -407,6 +412,7 @@ config USB_ALI_M5632
+ config USB_AN2720
+ bool "AnchorChips 2720 based cables (Xircom PGUNET, ...)"
+ depends on USB_NET_CDC_SUBSET
++ select USB_NET_CDC_SUBSET_ENABLE
+ help
+ Choose this option if you're using a host-to-host cable
+ based on this design. Note that AnchorChips is now a
+@@ -415,6 +421,7 @@ config USB_AN2720
+ config USB_BELKIN
+ bool "eTEK based host-to-host cables (Advance, Belkin, ...)"
+ depends on USB_NET_CDC_SUBSET
++ select USB_NET_CDC_SUBSET_ENABLE
+ default y
+ help
+ Choose this option if you're using a host-to-host cable
+@@ -424,6 +431,7 @@ config USB_BELKIN
+ config USB_ARMLINUX
+ bool "Embedded ARM Linux links (iPaq, ...)"
+ depends on USB_NET_CDC_SUBSET
++ select USB_NET_CDC_SUBSET_ENABLE
+ default y
+ help
+ Choose this option to support the "usb-eth" networking driver
+@@ -441,6 +449,7 @@ config USB_ARMLINUX
+ config USB_EPSON2888
+ bool "Epson 2888 based firmware (DEVELOPMENT)"
+ depends on USB_NET_CDC_SUBSET
++ select USB_NET_CDC_SUBSET_ENABLE
+ help
+ Choose this option to support the usb networking links used
+ by some sample firmware from Epson.
+@@ -448,6 +457,7 @@ config USB_EPSON2888
+ config USB_KC2190
+ bool "KT Technology KC2190 based cables (InstaNet)"
+ depends on USB_NET_CDC_SUBSET
++ select USB_NET_CDC_SUBSET_ENABLE
+ help
+ Choose this option if you're using a host-to-host cable
+ with one of these chips.
+diff --git a/drivers/net/usb/Makefile b/drivers/net/usb/Makefile
+index e2797f1e1b31..ed5a577c1a61 100644
+--- a/drivers/net/usb/Makefile
++++ b/drivers/net/usb/Makefile
+@@ -22,7 +22,7 @@ obj-$(CONFIG_USB_NET_GL620A) += gl620a.o
+ obj-$(CONFIG_USB_NET_NET1080) += net1080.o
+ obj-$(CONFIG_USB_NET_PLUSB) += plusb.o
+ obj-$(CONFIG_USB_NET_RNDIS_HOST) += rndis_host.o
+-obj-$(CONFIG_USB_NET_CDC_SUBSET) += cdc_subset.o
++obj-$(CONFIG_USB_NET_CDC_SUBSET_ENABLE) += cdc_subset.o
+ obj-$(CONFIG_USB_NET_ZAURUS) += zaurus.o
+ obj-$(CONFIG_USB_NET_MCS7830) += mcs7830.o
+ obj-$(CONFIG_USB_USBNET) += usbnet.o
+diff --git a/drivers/net/usb/cx82310_eth.c b/drivers/net/usb/cx82310_eth.c
+index e221bfcee76b..947bea81d924 100644
+--- a/drivers/net/usb/cx82310_eth.c
++++ b/drivers/net/usb/cx82310_eth.c
+@@ -293,12 +293,9 @@ static struct sk_buff *cx82310_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
+ {
+ int len = skb->len;
+
+- if (skb_headroom(skb) < 2) {
+- struct sk_buff *skb2 = skb_copy_expand(skb, 2, 0, flags);
++ if (skb_cow_head(skb, 2)) {
+ dev_kfree_skb_any(skb);
+- skb = skb2;
+- if (!skb)
+- return NULL;
++ return NULL;
+ }
+ skb_push(skb, 2);
+
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index 6cf881ce4d4e..3d97fd391793 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -464,6 +464,10 @@ static const struct usb_device_id products[] = {
+ USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x69),
+ .driver_info = (unsigned long)&qmi_wwan_info,
+ },
++ { /* Motorola Mapphone devices with MDM6600 */
++ USB_VENDOR_AND_INTERFACE_INFO(0x22b8, USB_CLASS_VENDOR_SPEC, 0xfb, 0xff),
++ .driver_info = (unsigned long)&qmi_wwan_info,
++ },
+
+ /* 2. Combined interface devices matching on class+protocol */
+ { /* Huawei E367 and possibly others in "Windows mode" */
+@@ -775,6 +779,7 @@ static const struct usb_device_id products[] = {
+ {QMI_FIXED_INTF(0x1199, 0x9079, 10)}, /* Sierra Wireless EM74xx */
+ {QMI_FIXED_INTF(0x1199, 0x907b, 8)}, /* Sierra Wireless EM74xx */
+ {QMI_FIXED_INTF(0x1199, 0x907b, 10)}, /* Sierra Wireless EM74xx */
++ {QMI_FIXED_INTF(0x1199, 0x9091, 8)}, /* Sierra Wireless EM7565 */
+ {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)}, /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */
+ {QMI_FIXED_INTF(0x1bbb, 0x0203, 2)}, /* Alcatel L800MA */
+ {QMI_FIXED_INTF(0x2357, 0x0201, 4)}, /* TP-LINK HSUPA Modem MA180 */
+diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
+index e387af61e0d3..55b0129acff7 100644
+--- a/drivers/net/usb/r8152.c
++++ b/drivers/net/usb/r8152.c
+@@ -1263,6 +1263,7 @@ static int alloc_all_mem(struct r8152 *tp)
+ spin_lock_init(&tp->rx_lock);
+ spin_lock_init(&tp->tx_lock);
+ INIT_LIST_HEAD(&tp->tx_free);
++ INIT_LIST_HEAD(&tp->rx_done);
+ skb_queue_head_init(&tp->tx_queue);
+ skb_queue_head_init(&tp->rx_queue);
+
+@@ -1928,7 +1929,6 @@ static void _rtl8152_set_rx_mode(struct net_device *netdev)
+ __le32 tmp[2];
+ u32 ocp_data;
+
+- clear_bit(RTL8152_SET_RX_MODE, &tp->flags);
+ netif_stop_queue(netdev);
+ ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
+ ocp_data &= ~RCR_ACPT_ALL;
+@@ -2363,8 +2363,6 @@ static void rtl_phy_reset(struct r8152 *tp)
+ u16 data;
+ int i;
+
+- clear_bit(PHY_RESET, &tp->flags);
+-
+ data = r8152_mdio_read(tp, MII_BMCR);
+
+ /* don't reset again before the previous one complete */
+@@ -2859,10 +2857,9 @@ static int rtl8152_set_speed(struct r8152 *tp, u8 autoneg, u16 speed, u8 duplex)
+ r8152_mdio_write(tp, MII_ADVERTISE, anar);
+ r8152_mdio_write(tp, MII_BMCR, bmcr);
+
+- if (test_bit(PHY_RESET, &tp->flags)) {
++ if (test_and_clear_bit(PHY_RESET, &tp->flags)) {
+ int i;
+
+- clear_bit(PHY_RESET, &tp->flags);
+ for (i = 0; i < 50; i++) {
+ msleep(20);
+ if ((r8152_mdio_read(tp, MII_BMCR) & BMCR_RESET) == 0)
+@@ -2871,7 +2868,6 @@ static int rtl8152_set_speed(struct r8152 *tp, u8 autoneg, u16 speed, u8 duplex)
+ }
+
+ out:
+-
+ return ret;
+ }
+
+@@ -2927,7 +2923,6 @@ static void set_carrier(struct r8152 *tp)
+ struct net_device *netdev = tp->netdev;
+ u8 speed;
+
+- clear_bit(RTL8152_LINK_CHG, &tp->flags);
+ speed = rtl8152_get_speed(tp);
+
+ if (speed & LINK_STATUS) {
+@@ -2968,20 +2963,18 @@ static void rtl_work_func_t(struct work_struct *work)
+ goto out1;
+ }
+
+- if (test_bit(RTL8152_LINK_CHG, &tp->flags))
++ if (test_and_clear_bit(RTL8152_LINK_CHG, &tp->flags))
+ set_carrier(tp);
+
+- if (test_bit(RTL8152_SET_RX_MODE, &tp->flags))
++ if (test_and_clear_bit(RTL8152_SET_RX_MODE, &tp->flags))
+ _rtl8152_set_rx_mode(tp->netdev);
+
+ /* don't schedule napi before linking */
+- if (test_bit(SCHEDULE_NAPI, &tp->flags) &&
+- netif_carrier_ok(tp->netdev)) {
+- clear_bit(SCHEDULE_NAPI, &tp->flags);
++ if (test_and_clear_bit(SCHEDULE_NAPI, &tp->flags) &&
++ netif_carrier_ok(tp->netdev))
+ napi_schedule(&tp->napi);
+- }
+
+- if (test_bit(PHY_RESET, &tp->flags))
++ if (test_and_clear_bit(PHY_RESET, &tp->flags))
+ rtl_phy_reset(tp);
+
+ mutex_unlock(&tp->control);
+diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c
+index d9e7892262fa..2c526ca29cde 100644
+--- a/drivers/net/usb/smsc75xx.c
++++ b/drivers/net/usb/smsc75xx.c
+@@ -2198,13 +2198,9 @@ static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
+ {
+ u32 tx_cmd_a, tx_cmd_b;
+
+- if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) {
+- struct sk_buff *skb2 =
+- skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags);
++ if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
+ dev_kfree_skb_any(skb);
+- skb = skb2;
+- if (!skb)
+- return NULL;
++ return NULL;
+ }
+
+ tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
+diff --git a/drivers/net/usb/sr9700.c b/drivers/net/usb/sr9700.c
+index 4a1e9c489f1f..aadfe1d1c37e 100644
+--- a/drivers/net/usb/sr9700.c
++++ b/drivers/net/usb/sr9700.c
+@@ -456,14 +456,9 @@ static struct sk_buff *sr9700_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
+
+ len = skb->len;
+
+- if (skb_headroom(skb) < SR_TX_OVERHEAD) {
+- struct sk_buff *skb2;
+-
+- skb2 = skb_copy_expand(skb, SR_TX_OVERHEAD, 0, flags);
++ if (skb_cow_head(skb, SR_TX_OVERHEAD)) {
+ dev_kfree_skb_any(skb);
+- skb = skb2;
+- if (!skb)
+- return NULL;
++ return NULL;
+ }
+
+ __skb_push(skb, SR_TX_OVERHEAD);
+diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
+index 61c0840c448c..0b9c8d61f7d1 100644
+--- a/drivers/net/vmxnet3/vmxnet3_drv.c
++++ b/drivers/net/vmxnet3/vmxnet3_drv.c
+@@ -1431,7 +1431,6 @@ static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
+ rq->rx_ring[i].basePA);
+ rq->rx_ring[i].base = NULL;
+ }
+- rq->buf_info[i] = NULL;
+ }
+
+ if (rq->comp_ring.base) {
+@@ -1446,6 +1445,7 @@ static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
+ (rq->rx_ring[0].size + rq->rx_ring[1].size);
+ dma_free_coherent(&adapter->pdev->dev, sz, rq->buf_info[0],
+ rq->buf_info_pa);
++ rq->buf_info[0] = rq->buf_info[1] = NULL;
+ }
+ }
+
+diff --git a/drivers/net/wireless/cw1200/wsm.c b/drivers/net/wireless/cw1200/wsm.c
+index 9e0ca3048657..3dd46c78c1cc 100644
+--- a/drivers/net/wireless/cw1200/wsm.c
++++ b/drivers/net/wireless/cw1200/wsm.c
+@@ -379,7 +379,6 @@ static int wsm_multi_tx_confirm(struct cw1200_common *priv,
+ {
+ int ret;
+ int count;
+- int i;
+
+ count = WSM_GET32(buf);
+ if (WARN_ON(count <= 0))
+@@ -395,11 +394,10 @@ static int wsm_multi_tx_confirm(struct cw1200_common *priv,
+ }
+
+ cw1200_debug_txed_multi(priv, count);
+- for (i = 0; i < count; ++i) {
++ do {
+ ret = wsm_tx_confirm(priv, buf, link_id);
+- if (ret)
+- return ret;
+- }
++ } while (!ret && --count);
++
+ return ret;
+
+ underflow:
+diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
+index 8a38a5bd34b8..9e8461466534 100644
+--- a/drivers/net/xen-netfront.c
++++ b/drivers/net/xen-netfront.c
+@@ -87,6 +87,8 @@ struct netfront_cb {
+ /* IRQ name is queue name with "-tx" or "-rx" appended */
+ #define IRQ_NAME_SIZE (QUEUE_NAME_SIZE + 3)
+
++static DECLARE_WAIT_QUEUE_HEAD(module_unload_q);
++
+ struct netfront_stats {
+ u64 packets;
+ u64 bytes;
+@@ -1999,10 +2001,12 @@ static void netback_changed(struct xenbus_device *dev,
+ break;
+
+ case XenbusStateClosed:
++ wake_up_all(&module_unload_q);
+ if (dev->state == XenbusStateClosed)
+ break;
+ /* Missed the backend's CLOSING state -- fallthrough */
+ case XenbusStateClosing:
++ wake_up_all(&module_unload_q);
+ xenbus_frontend_closed(dev);
+ break;
+ }
+@@ -2108,6 +2112,20 @@ static int xennet_remove(struct xenbus_device *dev)
+
+ dev_dbg(&dev->dev, "%s\n", dev->nodename);
+
++ if (xenbus_read_driver_state(dev->otherend) != XenbusStateClosed) {
++ xenbus_switch_state(dev, XenbusStateClosing);
++ wait_event(module_unload_q,
++ xenbus_read_driver_state(dev->otherend) ==
++ XenbusStateClosing);
++
++ xenbus_switch_state(dev, XenbusStateClosed);
++ wait_event(module_unload_q,
++ xenbus_read_driver_state(dev->otherend) ==
++ XenbusStateClosed ||
++ xenbus_read_driver_state(dev->otherend) ==
++ XenbusStateUnknown);
++ }
++
+ xennet_disconnect_backend(info);
+
+ unregister_netdev(info->netdev);
+diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
+index 3901ff66d0ee..2f7978204421 100644
+--- a/drivers/parisc/lba_pci.c
++++ b/drivers/parisc/lba_pci.c
+@@ -1654,3 +1654,36 @@ void lba_set_iregs(struct parisc_device *lba, u32 ibase, u32 imask)
+ iounmap(base_addr);
+ }
+
++
++/*
++ * The design of the Diva management card in rp34x0 machines (rp3410, rp3440)
++ * seems rushed, so that many built-in components simply don't work.
++ * The following quirks disable the serial AUX port and the built-in ATI RV100
++ * Radeon 7000 graphics card which both don't have any external connectors and
++ * thus are useless, and even worse, e.g. the AUX port occupies ttyS0 and as
++ * such makes those machines the only PARISC machines on which we can't use
++ * ttyS0 as boot console.
++ */
++static void quirk_diva_ati_card(struct pci_dev *dev)
++{
++ if (dev->subsystem_vendor != PCI_VENDOR_ID_HP ||
++ dev->subsystem_device != 0x1292)
++ return;
++
++ dev_info(&dev->dev, "Hiding Diva built-in ATI card");
++ dev->device = 0;
++}
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QY,
++ quirk_diva_ati_card);
++
++static void quirk_diva_aux_disable(struct pci_dev *dev)
++{
++ if (dev->subsystem_vendor != PCI_VENDOR_ID_HP ||
++ dev->subsystem_device != 0x1291)
++ return;
++
++ dev_info(&dev->dev, "Hiding Diva built-in AUX serial device");
++ dev->device = 0;
++}
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_DIVA_AUX,
++ quirk_diva_aux_disable);
+diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c
+index 75333b0c4f0a..29b018c4e7e4 100644
+--- a/drivers/pci/host/pci-keystone.c
++++ b/drivers/pci/host/pci-keystone.c
+@@ -179,14 +179,16 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie,
+ }
+
+ /* interrupt controller is in a child node */
+- *np_temp = of_find_node_by_name(np_pcie, controller);
++ *np_temp = of_get_child_by_name(np_pcie, controller);
+ if (!(*np_temp)) {
+ dev_err(dev, "Node for %s is absent\n", controller);
+ goto out;
+ }
+ temp = of_irq_count(*np_temp);
+- if (!temp)
++ if (!temp) {
++ of_node_put(*np_temp);
+ goto out;
++ }
+ if (temp > max_host_irqs)
+ dev_warn(dev, "Too many %s interrupts defined %u\n",
+ (legacy ? "legacy" : "MSI"), temp);
+@@ -200,6 +202,9 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie,
+ if (!host_irqs[temp])
+ break;
+ }
++
++ of_node_put(*np_temp);
++
+ if (temp) {
+ *num_irqs = temp;
+ ret = 0;
+diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
+index 089a1f41e44e..95db37cf5f08 100644
+--- a/drivers/pci/iov.c
++++ b/drivers/pci/iov.c
+@@ -156,7 +156,6 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset)
+ pci_device_add(virtfn, virtfn->bus);
+ mutex_unlock(&iov->dev->sriov->lock);
+
+- pci_bus_add_device(virtfn);
+ sprintf(buf, "virtfn%u", id);
+ rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf);
+ if (rc)
+@@ -167,6 +166,8 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset)
+
+ kobject_uevent(&virtfn->dev.kobj, KOBJ_CHANGE);
+
++ pci_bus_add_device(virtfn);
++
+ return 0;
+
+ failed2:
+diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
+index 98101c4118bb..1363fe636281 100644
+--- a/drivers/pci/pci-driver.c
++++ b/drivers/pci/pci-driver.c
+@@ -936,7 +936,12 @@ static int pci_pm_thaw_noirq(struct device *dev)
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_resume_early(dev);
+
+- pci_update_current_state(pci_dev, PCI_D0);
++ /*
++ * pci_restore_state() requires the device to be in D0 (because of MSI
++ * restoration among other things), so force it into D0 in case the
++ * driver's "freeze" callbacks put it into a low-power state directly.
++ */
++ pci_set_power_state(pci_dev, PCI_D0);
+ pci_restore_state(pci_dev);
+
+ if (drv && drv->pm && drv->pm->thaw_noirq)
+diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
+index 409f895b5a3d..ffd8fe77b8ae 100644
+--- a/drivers/pci/pci.c
++++ b/drivers/pci/pci.c
+@@ -3651,6 +3651,10 @@ static bool pci_bus_resetable(struct pci_bus *bus)
+ {
+ struct pci_dev *dev;
+
++
++ if (bus->self && (bus->self->dev_flags & PCI_DEV_FLAGS_NO_BUS_RESET))
++ return false;
++
+ list_for_each_entry(dev, &bus->devices, bus_list) {
+ if (dev->dev_flags & PCI_DEV_FLAGS_NO_BUS_RESET ||
+ (dev->subordinate && !pci_bus_resetable(dev->subordinate)))
+diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
+index b60a325234c5..cca4b4789ac4 100644
+--- a/drivers/pci/pcie/aer/aerdrv_core.c
++++ b/drivers/pci/pcie/aer/aerdrv_core.c
+@@ -360,7 +360,14 @@ static pci_ers_result_t broadcast_error_message(struct pci_dev *dev,
+ * If the error is reported by an end point, we think this
+ * error is related to the upstream link of the end point.
+ */
+- pci_walk_bus(dev->bus, cb, &result_data);
++ if (state == pci_channel_io_normal)
++ /*
++ * the error is non fatal so the bus is ok, just invoke
++ * the callback for the function that logged the error.
++ */
++ cb(dev, &result_data);
++ else
++ pci_walk_bus(dev->bus, cb, &result_data);
+ }
+
+ return result_data.result;
+diff --git a/drivers/pinctrl/pinctrl-st.c b/drivers/pinctrl/pinctrl-st.c
+index 65bf73b70e34..a02a7caf8d4c 100644
+--- a/drivers/pinctrl/pinctrl-st.c
++++ b/drivers/pinctrl/pinctrl-st.c
+@@ -1348,6 +1348,22 @@ static void st_gpio_irq_unmask(struct irq_data *d)
+ writel(BIT(d->hwirq), bank->base + REG_PIO_SET_PMASK);
+ }
+
++static int st_gpio_irq_request_resources(struct irq_data *d)
++{
++ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
++
++ st_gpio_direction_input(gc, d->hwirq);
++
++ return gpiochip_lock_as_irq(gc, d->hwirq);
++}
++
++static void st_gpio_irq_release_resources(struct irq_data *d)
++{
++ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
++
++ gpiochip_unlock_as_irq(gc, d->hwirq);
++}
++
+ static int st_gpio_irq_set_type(struct irq_data *d, unsigned type)
+ {
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+@@ -1503,12 +1519,14 @@ static struct gpio_chip st_gpio_template = {
+ };
+
+ static struct irq_chip st_gpio_irqchip = {
+- .name = "GPIO",
+- .irq_disable = st_gpio_irq_mask,
+- .irq_mask = st_gpio_irq_mask,
+- .irq_unmask = st_gpio_irq_unmask,
+- .irq_set_type = st_gpio_irq_set_type,
+- .flags = IRQCHIP_SKIP_SET_WAKE,
++ .name = "GPIO",
++ .irq_request_resources = st_gpio_irq_request_resources,
++ .irq_release_resources = st_gpio_irq_release_resources,
++ .irq_disable = st_gpio_irq_mask,
++ .irq_mask = st_gpio_irq_mask,
++ .irq_unmask = st_gpio_irq_unmask,
++ .irq_set_type = st_gpio_irq_set_type,
++ .flags = IRQCHIP_SKIP_SET_WAKE,
+ };
+
+ static int st_gpiolib_register_bank(struct st_pinctrl *info,
+diff --git a/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c b/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c
+index 1b580ba76453..907d7db3fcee 100644
+--- a/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c
++++ b/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c
+@@ -145,19 +145,19 @@ static const struct sunxi_desc_pin sun9i_a80_pins[] = {
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x3, "mcsi"), /* MCLK */
+- SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 14)), /* PB_EINT14 */
++ SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 14)), /* PB_EINT14 */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 15),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x3, "mcsi"), /* SCK */
+ SUNXI_FUNCTION(0x4, "i2c4"), /* SCK */
+- SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 15)), /* PB_EINT15 */
++ SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 15)), /* PB_EINT15 */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 16),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x3, "mcsi"), /* SDA */
+ SUNXI_FUNCTION(0x4, "i2c4"), /* SDA */
+- SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 16)), /* PB_EINT16 */
++ SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 16)), /* PB_EINT16 */
+
+ /* Hole */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(C, 0),
+diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
+index f9f205cb1f11..8becddcf130b 100644
+--- a/drivers/platform/x86/Kconfig
++++ b/drivers/platform/x86/Kconfig
+@@ -94,6 +94,7 @@ config DELL_LAPTOP
+ tristate "Dell Laptop Extras"
+ depends on X86
+ depends on DCDBAS
++ depends on DMI
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on RFKILL || RFKILL = n
+ depends on SERIO_I8042
+@@ -108,6 +109,7 @@ config DELL_LAPTOP
+ config DELL_WMI
+ tristate "Dell WMI extras"
+ depends on ACPI_WMI
++ depends on DMI
+ depends on INPUT
+ select INPUT_SPARSEKMAP
+ ---help---
+diff --git a/drivers/platform/x86/intel_mid_thermal.c b/drivers/platform/x86/intel_mid_thermal.c
+index aeb3f786d2f0..84273a979768 100644
+--- a/drivers/platform/x86/intel_mid_thermal.c
++++ b/drivers/platform/x86/intel_mid_thermal.c
+@@ -416,6 +416,7 @@ static struct thermal_device_info *initialize_sensor(int index)
+ return td_info;
+ }
+
++#ifdef CONFIG_PM_SLEEP
+ /**
+ * mid_thermal_resume - resume routine
+ * @dev: device structure
+@@ -443,6 +444,7 @@ static int mid_thermal_suspend(struct device *dev)
+ */
+ return configure_adc(0);
+ }
++#endif
+
+ static SIMPLE_DEV_PM_OPS(mid_thermal_pm,
+ mid_thermal_suspend, mid_thermal_resume);
+diff --git a/drivers/platform/x86/tc1100-wmi.c b/drivers/platform/x86/tc1100-wmi.c
+index e36542564131..e89ac8cd20e8 100644
+--- a/drivers/platform/x86/tc1100-wmi.c
++++ b/drivers/platform/x86/tc1100-wmi.c
+@@ -52,7 +52,9 @@ struct tc1100_data {
+ u32 jogdial;
+ };
+
++#ifdef CONFIG_PM
+ static struct tc1100_data suspend_data;
++#endif
+
+ /* --------------------------------------------------------------------------
+ Device Management
+diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
+index faa81ac2d481..038da40e4038 100644
+--- a/drivers/rtc/interface.c
++++ b/drivers/rtc/interface.c
+@@ -809,7 +809,7 @@ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer)
+ }
+
+ timerqueue_add(&rtc->timerqueue, &timer->node);
+- if (!next) {
++ if (!next || ktime_before(timer->node.expires, next->expires)) {
+ struct rtc_wkalrm alarm;
+ int err;
+ alarm.time = rtc_ktime_to_tm(timer->node.expires);
+diff --git a/drivers/rtc/rtc-opal.c b/drivers/rtc/rtc-opal.c
+index 7061dcae2b09..482af0dda0b0 100644
+--- a/drivers/rtc/rtc-opal.c
++++ b/drivers/rtc/rtc-opal.c
+@@ -58,6 +58,7 @@ static void tm_to_opal(struct rtc_time *tm, u32 *y_m_d, u64 *h_m_s_ms)
+ static int opal_get_rtc_time(struct device *dev, struct rtc_time *tm)
+ {
+ long rc = OPAL_BUSY;
++ int retries = 10;
+ u32 y_m_d;
+ u64 h_m_s_ms;
+ __be32 __y_m_d;
+@@ -67,8 +68,11 @@ static int opal_get_rtc_time(struct device *dev, struct rtc_time *tm)
+ rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms);
+ if (rc == OPAL_BUSY_EVENT)
+ opal_poll_events(NULL);
+- else
++ else if (retries-- && (rc == OPAL_HARDWARE
++ || rc == OPAL_INTERNAL_ERROR))
+ msleep(10);
++ else if (rc != OPAL_BUSY && rc != OPAL_BUSY_EVENT)
++ break;
+ }
+
+ if (rc != OPAL_SUCCESS)
+@@ -84,6 +88,7 @@ static int opal_get_rtc_time(struct device *dev, struct rtc_time *tm)
+ static int opal_set_rtc_time(struct device *dev, struct rtc_time *tm)
+ {
+ long rc = OPAL_BUSY;
++ int retries = 10;
+ u32 y_m_d = 0;
+ u64 h_m_s_ms = 0;
+
+@@ -92,8 +97,11 @@ static int opal_set_rtc_time(struct device *dev, struct rtc_time *tm)
+ rc = opal_rtc_write(y_m_d, h_m_s_ms);
+ if (rc == OPAL_BUSY_EVENT)
+ opal_poll_events(NULL);
+- else
++ else if (retries-- && (rc == OPAL_HARDWARE
++ || rc == OPAL_INTERNAL_ERROR))
+ msleep(10);
++ else if (rc != OPAL_BUSY && rc != OPAL_BUSY_EVENT)
++ break;
+ }
+
+ return rc == OPAL_SUCCESS ? 0 : -EIO;
+diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
+index 6215f6455eb8..7f31087fca31 100644
+--- a/drivers/s390/block/dasd_eckd.c
++++ b/drivers/s390/block/dasd_eckd.c
+@@ -518,10 +518,12 @@ static int prefix_LRE(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata,
+ pfxdata->validity.define_extent = 1;
+
+ /* private uid is kept up to date, conf_data may be outdated */
+- if (startpriv->uid.type != UA_BASE_DEVICE) {
++ if (startpriv->uid.type == UA_BASE_PAV_ALIAS)
+ pfxdata->validity.verify_base = 1;
+- if (startpriv->uid.type == UA_HYPER_PAV_ALIAS)
+- pfxdata->validity.hyper_pav = 1;
++
++ if (startpriv->uid.type == UA_HYPER_PAV_ALIAS) {
++ pfxdata->validity.verify_base = 1;
++ pfxdata->validity.hyper_pav = 1;
+ }
+
+ /* define extend data (mostly)*/
+@@ -2964,10 +2966,12 @@ static int prepare_itcw(struct itcw *itcw,
+ pfxdata.validity.define_extent = 1;
+
+ /* private uid is kept up to date, conf_data may be outdated */
+- if (startpriv->uid.type != UA_BASE_DEVICE) {
++ if (startpriv->uid.type == UA_BASE_PAV_ALIAS)
++ pfxdata.validity.verify_base = 1;
++
++ if (startpriv->uid.type == UA_HYPER_PAV_ALIAS) {
+ pfxdata.validity.verify_base = 1;
+- if (startpriv->uid.type == UA_HYPER_PAV_ALIAS)
+- pfxdata.validity.hyper_pav = 1;
++ pfxdata.validity.hyper_pav = 1;
+ }
+
+ switch (cmd) {
+diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
+index fefd3c512386..6dbf0d5a2a22 100644
+--- a/drivers/s390/net/qeth_l3_main.c
++++ b/drivers/s390/net/qeth_l3_main.c
+@@ -2790,17 +2790,13 @@ static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
+ char daddr[16];
+ struct af_iucv_trans_hdr *iucv_hdr;
+
+- skb_pull(skb, 14);
+- card->dev->header_ops->create(skb, card->dev, 0,
+- card->dev->dev_addr, card->dev->dev_addr,
+- card->dev->addr_len);
+- skb_pull(skb, 14);
+- iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
+ memset(hdr, 0, sizeof(struct qeth_hdr));
+ hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
+ hdr->hdr.l3.ext_flags = 0;
+- hdr->hdr.l3.length = skb->len;
++ hdr->hdr.l3.length = skb->len - ETH_HLEN;
+ hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
++
++ iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
+ memset(daddr, 0, sizeof(daddr));
+ daddr[0] = 0xfe;
+ daddr[1] = 0x80;
+@@ -2983,10 +2979,7 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+ if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
+ (skb_shinfo(skb)->nr_frags == 0)) {
+ new_skb = skb;
+- if (new_skb->protocol == ETH_P_AF_IUCV)
+- data_offset = 0;
+- else
+- data_offset = ETH_HLEN;
++ data_offset = ETH_HLEN;
+ hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
+ if (!hdr)
+ goto tx_drop;
+diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
+index ae95e347f37d..42a14c456da0 100644
+--- a/drivers/scsi/advansys.c
++++ b/drivers/scsi/advansys.c
+@@ -6482,18 +6482,17 @@ static uchar AscGetSynPeriodIndex(ASC_DVC_VAR *asc_dvc, uchar syn_time)
+ static uchar
+ AscMsgOutSDTR(ASC_DVC_VAR *asc_dvc, uchar sdtr_period, uchar sdtr_offset)
+ {
+- EXT_MSG sdtr_buf;
+- uchar sdtr_period_index;
+- PortAddr iop_base;
+-
+- iop_base = asc_dvc->iop_base;
+- sdtr_buf.msg_type = EXTENDED_MESSAGE;
+- sdtr_buf.msg_len = MS_SDTR_LEN;
+- sdtr_buf.msg_req = EXTENDED_SDTR;
+- sdtr_buf.xfer_period = sdtr_period;
++ PortAddr iop_base = asc_dvc->iop_base;
++ uchar sdtr_period_index = AscGetSynPeriodIndex(asc_dvc, sdtr_period);
++ EXT_MSG sdtr_buf = {
++ .msg_type = EXTENDED_MESSAGE,
++ .msg_len = MS_SDTR_LEN,
++ .msg_req = EXTENDED_SDTR,
++ .xfer_period = sdtr_period,
++ .req_ack_offset = sdtr_offset,
++ };
+ sdtr_offset &= ASC_SYN_MAX_OFFSET;
+- sdtr_buf.req_ack_offset = sdtr_offset;
+- sdtr_period_index = AscGetSynPeriodIndex(asc_dvc, sdtr_period);
++
+ if (sdtr_period_index <= asc_dvc->max_sdtr_index) {
+ AscMemWordCopyPtrToLram(iop_base, ASCV_MSGOUT_BEG,
+ (uchar *)&sdtr_buf,
+@@ -11476,6 +11475,9 @@ static int advansys_board_found(struct Scsi_Host *shost, unsigned int iop,
+ ASC_DBG(2, "AdvInitGetConfig()\n");
+
+ ret = AdvInitGetConfig(pdev, shost) ? -ENODEV : 0;
++#else
++ share_irq = 0;
++ ret = -ENODEV;
+ #endif /* CONFIG_PCI */
+ }
+
+diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+index dd00e5fe4a5e..18f782bfc874 100644
+--- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
++++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+@@ -1332,6 +1332,7 @@ static void release_offload_resources(struct cxgbi_sock *csk)
+ csk, csk->state, csk->flags, csk->tid);
+
+ cxgbi_sock_free_cpl_skbs(csk);
++ cxgbi_sock_purge_write_queue(csk);
+ if (csk->wr_cred != csk->wr_max_cred) {
+ cxgbi_sock_purge_wr_queue(csk);
+ cxgbi_sock_reset_wr_list(csk);
+diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
+index 2806cfbec2b9..8803bafc48e9 100644
+--- a/drivers/scsi/dpt_i2o.c
++++ b/drivers/scsi/dpt_i2o.c
+@@ -180,11 +180,14 @@ static u8 adpt_read_blink_led(adpt_hba* host)
+ *============================================================================
+ */
+
++#ifdef MODULE
+ static struct pci_device_id dptids[] = {
+ { PCI_DPT_VENDOR_ID, PCI_DPT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
+ { PCI_DPT_VENDOR_ID, PCI_DPT_RAPTOR_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
+ { 0, }
+ };
++#endif
++
+ MODULE_DEVICE_TABLE(pci,dptids);
+
+ static int adpt_detect(struct scsi_host_template* sht)
+diff --git a/drivers/scsi/fdomain.c b/drivers/scsi/fdomain.c
+index fff682976c56..466d0a30aae7 100644
+--- a/drivers/scsi/fdomain.c
++++ b/drivers/scsi/fdomain.c
+@@ -1769,7 +1769,7 @@ struct scsi_host_template fdomain_driver_template = {
+ };
+
+ #ifndef PCMCIA
+-#ifdef CONFIG_PCI
++#if defined(CONFIG_PCI) && defined(MODULE)
+
+ static struct pci_device_id fdomain_pci_tbl[] = {
+ { PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70,
+diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
+index 8fae03215a85..543c10266984 100644
+--- a/drivers/scsi/ibmvscsi/ibmvfc.h
++++ b/drivers/scsi/ibmvscsi/ibmvfc.h
+@@ -366,7 +366,7 @@ enum ibmvfc_fcp_rsp_info_codes {
+ };
+
+ struct ibmvfc_fcp_rsp_info {
+- __be16 reserved;
++ u8 reserved[3];
+ u8 rsp_code;
+ u8 reserved2[4];
+ }__attribute__((packed, aligned (2)));
+diff --git a/drivers/scsi/initio.c b/drivers/scsi/initio.c
+index e5dae7b54d9a..51063177f18e 100644
+--- a/drivers/scsi/initio.c
++++ b/drivers/scsi/initio.c
+@@ -110,11 +110,6 @@
+ #define i91u_MAXQUEUE 2
+ #define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
+
+-#define I950_DEVICE_ID 0x9500 /* Initio's inic-950 product ID */
+-#define I940_DEVICE_ID 0x9400 /* Initio's inic-940 product ID */
+-#define I935_DEVICE_ID 0x9401 /* Initio's inic-935 product ID */
+-#define I920_DEVICE_ID 0x0002 /* Initio's other product ID */
+-
+ #ifdef DEBUG_i91u
+ static unsigned int i91u_debug = DEBUG_DEFAULT;
+ #endif
+@@ -127,17 +122,6 @@ static int setup_debug = 0;
+
+ static void i91uSCBPost(u8 * pHcb, u8 * pScb);
+
+-/* PCI Devices supported by this driver */
+-static struct pci_device_id i91u_pci_devices[] = {
+- { PCI_VENDOR_ID_INIT, I950_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+- { PCI_VENDOR_ID_INIT, I940_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+- { PCI_VENDOR_ID_INIT, I935_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+- { PCI_VENDOR_ID_INIT, I920_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+- { PCI_VENDOR_ID_DOMEX, I920_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+- { }
+-};
+-MODULE_DEVICE_TABLE(pci, i91u_pci_devices);
+-
+ #define DEBUG_INTERRUPT 0
+ #define DEBUG_QUEUE 0
+ #define DEBUG_STATE 0
+diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
+index 39e511216fd9..8826110991eb 100644
+--- a/drivers/scsi/libiscsi.c
++++ b/drivers/scsi/libiscsi.c
+@@ -1727,7 +1727,7 @@ int iscsi_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc)
+
+ if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx)) {
+ reason = FAILURE_SESSION_IN_RECOVERY;
+- sc->result = DID_REQUEUE;
++ sc->result = DID_REQUEUE << 16;
+ goto fault;
+ }
+
+diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
+index 30f2fe9ba766..9c09ce9b98da 100644
+--- a/drivers/scsi/lpfc/lpfc_els.c
++++ b/drivers/scsi/lpfc/lpfc_els.c
+@@ -6891,7 +6891,8 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ did, vport->port_state, ndlp->nlp_flag);
+
+ phba->fc_stat.elsRcvPRLI++;
+- if (vport->port_state < LPFC_DISC_AUTH) {
++ if ((vport->port_state < LPFC_DISC_AUTH) &&
++ (vport->fc_flag & FC_FABRIC)) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ break;
+diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
+index 2500f15d437f..574b1a9b2b32 100644
+--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
++++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
+@@ -4767,7 +4767,8 @@ lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
+ lpfc_cancel_retry_delay_tmo(vport, ndlp);
+ if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
+ !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
+- !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
++ !(ndlp->nlp_flag & NLP_RPI_REGISTERED) &&
++ phba->sli_rev != LPFC_SLI_REV4) {
+ /* For this case we need to cleanup the default rpi
+ * allocated by the firmware.
+ */
+diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
+index 3757a7399983..d7ee72ef99ed 100644
+--- a/drivers/scsi/lpfc/lpfc_hw4.h
++++ b/drivers/scsi/lpfc/lpfc_hw4.h
+@@ -2953,7 +2953,7 @@ struct lpfc_mbx_get_port_name {
+ #define MB_CEQ_STATUS_QUEUE_FLUSHING 0x4
+ #define MB_CQE_STATUS_DMA_FAILED 0x5
+
+-#define LPFC_MBX_WR_CONFIG_MAX_BDE 8
++#define LPFC_MBX_WR_CONFIG_MAX_BDE 1
+ struct lpfc_mbx_wr_object {
+ struct mbox_header header;
+ union {
+diff --git a/drivers/scsi/mvumi.c b/drivers/scsi/mvumi.c
+index 3e6b866759fe..c51e1537ed8e 100644
+--- a/drivers/scsi/mvumi.c
++++ b/drivers/scsi/mvumi.c
+@@ -2629,7 +2629,7 @@ static void mvumi_shutdown(struct pci_dev *pdev)
+ mvumi_flush_cache(mhba);
+ }
+
+-static int mvumi_suspend(struct pci_dev *pdev, pm_message_t state)
++static int __maybe_unused mvumi_suspend(struct pci_dev *pdev, pm_message_t state)
+ {
+ struct mvumi_hba *mhba = NULL;
+
+@@ -2648,7 +2648,7 @@ static int mvumi_suspend(struct pci_dev *pdev, pm_message_t state)
+ return 0;
+ }
+
+-static int mvumi_resume(struct pci_dev *pdev)
++static int __maybe_unused mvumi_resume(struct pci_dev *pdev)
+ {
+ int ret;
+ struct mvumi_hba *mhba = NULL;
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index 102806a961da..2589a75f0810 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -160,7 +160,6 @@ typedef struct sg_fd { /* holds the state of a file descriptor */
+ struct list_head rq_list; /* head of request list */
+ struct fasync_struct *async_qp; /* used by asynchronous notification */
+ Sg_request req_arr[SG_MAX_QUEUE]; /* used as singly-linked list */
+- char low_dma; /* as in parent but possibly overridden to 1 */
+ char force_packid; /* 1 -> pack_id input to read(), 0 -> ignored */
+ char cmd_q; /* 1 -> allow command queuing, 0 -> don't */
+ unsigned char next_cmd_len; /* 0: automatic, >0: use on next write() */
+@@ -926,24 +925,14 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
+ /* strange ..., for backward compatibility */
+ return sfp->timeout_user;
+ case SG_SET_FORCE_LOW_DMA:
+- result = get_user(val, ip);
+- if (result)
+- return result;
+- if (val) {
+- sfp->low_dma = 1;
+- if ((0 == sfp->low_dma) && !sfp->res_in_use) {
+- val = (int) sfp->reserve.bufflen;
+- sg_remove_scat(sfp, &sfp->reserve);
+- sg_build_reserve(sfp, val);
+- }
+- } else {
+- if (atomic_read(&sdp->detaching))
+- return -ENODEV;
+- sfp->low_dma = sdp->device->host->unchecked_isa_dma;
+- }
++ /*
++ * N.B. This ioctl never worked properly, but failed to
++ * return an error value. So returning '0' to keep compability
++ * with legacy applications.
++ */
+ return 0;
+ case SG_GET_LOW_DMA:
+- return put_user((int) sfp->low_dma, ip);
++ return put_user((int) sdp->device->host->unchecked_isa_dma, ip);
+ case SG_GET_SCSI_ID:
+ if (!access_ok(VERIFY_WRITE, p, sizeof (sg_scsi_id_t)))
+ return -EFAULT;
+@@ -1864,6 +1853,7 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size)
+ int sg_tablesize = sfp->parentdp->sg_tablesize;
+ int blk_size = buff_size, order;
+ gfp_t gfp_mask = GFP_ATOMIC | __GFP_COMP | __GFP_NOWARN;
++ struct sg_device *sdp = sfp->parentdp;
+
+ if (blk_size < 0)
+ return -EFAULT;
+@@ -1889,7 +1879,7 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size)
+ scatter_elem_sz_prev = num;
+ }
+
+- if (sfp->low_dma)
++ if (sdp->device->host->unchecked_isa_dma)
+ gfp_mask |= GFP_DMA;
+
+ if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
+@@ -2152,8 +2142,6 @@ sg_add_sfp(Sg_device * sdp)
+ sfp->timeout = SG_DEFAULT_TIMEOUT;
+ sfp->timeout_user = SG_DEFAULT_TIMEOUT_USER;
+ sfp->force_packid = SG_DEF_FORCE_PACK_ID;
+- sfp->low_dma = (SG_DEF_FORCE_LOW_DMA == 0) ?
+- sdp->device->host->unchecked_isa_dma : 1;
+ sfp->cmd_q = SG_DEF_COMMAND_Q;
+ sfp->keep_orphan = SG_DEF_KEEP_ORPHAN;
+ sfp->parentdp = sdp;
+@@ -2612,7 +2600,7 @@ static void sg_proc_debug_helper(struct seq_file *s, Sg_device * sdp)
+ jiffies_to_msecs(fp->timeout),
+ fp->reserve.bufflen,
+ (int) fp->reserve.k_use_sg,
+- (int) fp->low_dma);
++ (int) sdp->device->host->unchecked_isa_dma);
+ seq_printf(s, " cmd_q=%d f_packid=%d k_orphan=%d closed=0\n",
+ (int) fp->cmd_q, (int) fp->force_packid,
+ (int) fp->keep_orphan);
+diff --git a/drivers/scsi/sim710.c b/drivers/scsi/sim710.c
+index 3b3b56f4a830..82ed99848378 100644
+--- a/drivers/scsi/sim710.c
++++ b/drivers/scsi/sim710.c
+@@ -176,8 +176,7 @@ static struct eisa_device_id sim710_eisa_ids[] = {
+ };
+ MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);
+
+-static __init int
+-sim710_eisa_probe(struct device *dev)
++static int sim710_eisa_probe(struct device *dev)
+ {
+ struct eisa_device *edev = to_eisa_device(dev);
+ unsigned long io_addr = edev->base_addr;
+diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
+index 648a44675880..05b76cdfb263 100644
+--- a/drivers/scsi/ufs/ufshcd.c
++++ b/drivers/scsi/ufs/ufshcd.c
+@@ -4290,12 +4290,15 @@ static int ufshcd_config_vreg(struct device *dev,
+ struct ufs_vreg *vreg, bool on)
+ {
+ int ret = 0;
+- struct regulator *reg = vreg->reg;
+- const char *name = vreg->name;
++ struct regulator *reg;
++ const char *name;
+ int min_uV, uA_load;
+
+ BUG_ON(!vreg);
+
++ reg = vreg->reg;
++ name = vreg->name;
++
+ if (regulator_count_voltages(reg) > 0) {
+ min_uV = on ? vreg->min_uV : 0;
+ ret = regulator_set_voltage(reg, min_uV, vreg->max_uV);
+diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
+index 412b9c86b997..967ba6329a58 100644
+--- a/drivers/spi/spi-imx.c
++++ b/drivers/spi/spi-imx.c
+@@ -1221,12 +1221,23 @@ static int spi_imx_remove(struct platform_device *pdev)
+ {
+ struct spi_master *master = platform_get_drvdata(pdev);
+ struct spi_imx_data *spi_imx = spi_master_get_devdata(master);
++ int ret;
+
+ spi_bitbang_stop(&spi_imx->bitbang);
+
++ ret = clk_enable(spi_imx->clk_per);
++ if (ret)
++ return ret;
++
++ ret = clk_enable(spi_imx->clk_ipg);
++ if (ret) {
++ clk_disable(spi_imx->clk_per);
++ return ret;
++ }
++
+ writel(0, spi_imx->base + MXC_CSPICTRL);
+- clk_unprepare(spi_imx->clk_ipg);
+- clk_unprepare(spi_imx->clk_per);
++ clk_disable_unprepare(spi_imx->clk_ipg);
++ clk_disable_unprepare(spi_imx->clk_per);
+ spi_imx_sdma_exit(spi_imx);
+ spi_master_put(master);
+
+diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c
+index 39d7c7c70112..2eea3de5a668 100644
+--- a/drivers/spi/spi-sun4i.c
++++ b/drivers/spi/spi-sun4i.c
+@@ -458,7 +458,7 @@ err_free_master:
+
+ static int sun4i_spi_remove(struct platform_device *pdev)
+ {
+- pm_runtime_disable(&pdev->dev);
++ pm_runtime_force_suspend(&pdev->dev);
+
+ return 0;
+ }
+diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c
+index 7dd6bde4f325..c40bd7fbc210 100644
+--- a/drivers/staging/android/ashmem.c
++++ b/drivers/staging/android/ashmem.c
+@@ -758,10 +758,12 @@ static long ashmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ break;
+ case ASHMEM_SET_SIZE:
+ ret = -EINVAL;
++ mutex_lock(&ashmem_mutex);
+ if (!asma->file) {
+ ret = 0;
+ asma->size = (size_t) arg;
+ }
++ mutex_unlock(&ashmem_mutex);
+ break;
+ case ASHMEM_GET_SIZE:
+ ret = asma->size;
+diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+index 96c1c2d4a112..6e73f4e130b5 100644
+--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
++++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+@@ -1397,19 +1397,13 @@ static int rtw_wx_get_essid(struct net_device *dev,
+ if ((check_fwstate(pmlmepriv, _FW_LINKED)) ||
+ (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE))) {
+ len = pcur_bss->Ssid.SsidLength;
+-
+- wrqu->essid.length = len;
+-
+ memcpy(extra, pcur_bss->Ssid.Ssid, len);
+-
+- wrqu->essid.flags = 1;
+ } else {
+- ret = -1;
+- goto exit;
++ len = 0;
++ *extra = 0;
+ }
+-
+-exit:
+-
++ wrqu->essid.length = len;
++ wrqu->essid.flags = 1;
+
+ return ret;
+ }
+diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
+index 0f524bb7b41d..daff4e76b6d6 100644
+--- a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
++++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
+@@ -1039,7 +1039,6 @@ static int synaptics_rmi4_remove(struct i2c_client *client)
+ return 0;
+ }
+
+-#ifdef CONFIG_PM
+ /**
+ * synaptics_rmi4_suspend() - suspend the touch screen controller
+ * @dev: pointer to device structure
+@@ -1047,7 +1046,7 @@ static int synaptics_rmi4_remove(struct i2c_client *client)
+ * This function is used to suspend the
+ * touch panel controller and returns integer
+ */
+-static int synaptics_rmi4_suspend(struct device *dev)
++static int __maybe_unused synaptics_rmi4_suspend(struct device *dev)
+ {
+ /* Touch sleep mode */
+ int retval;
+@@ -1081,7 +1080,7 @@ static int synaptics_rmi4_suspend(struct device *dev)
+ * This function is used to resume the touch panel
+ * controller and returns integer.
+ */
+-static int synaptics_rmi4_resume(struct device *dev)
++static int __maybe_unused synaptics_rmi4_resume(struct device *dev)
+ {
+ int retval;
+ unsigned char intr_status;
+@@ -1112,8 +1111,6 @@ static int synaptics_rmi4_resume(struct device *dev)
+ return 0;
+ }
+
+-#endif
+-
+ static SIMPLE_DEV_PM_OPS(synaptics_rmi4_dev_pm_ops, synaptics_rmi4_suspend,
+ synaptics_rmi4_resume);
+
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 2d6b0cf0929e..614811e93298 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -1755,7 +1755,6 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ struct iscsi_tmr_req *tmr_req;
+ struct iscsi_tm *hdr;
+ int out_of_order_cmdsn = 0, ret;
+- bool sess_ref = false;
+ u8 function, tcm_function = TMR_UNKNOWN;
+
+ hdr = (struct iscsi_tm *) buf;
+@@ -1797,18 +1796,17 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ buf);
+ }
+
++ transport_init_se_cmd(&cmd->se_cmd, &iscsi_ops,
++ conn->sess->se_sess, 0, DMA_NONE,
++ TCM_SIMPLE_TAG, cmd->sense_buffer + 2);
++
++ target_get_sess_cmd(&cmd->se_cmd, true);
++
+ /*
+ * TASK_REASSIGN for ERL=2 / connection stays inside of
+ * LIO-Target $FABRIC_MOD
+ */
+ if (function != ISCSI_TM_FUNC_TASK_REASSIGN) {
+- transport_init_se_cmd(&cmd->se_cmd, &iscsi_ops,
+- conn->sess->se_sess, 0, DMA_NONE,
+- TCM_SIMPLE_TAG, cmd->sense_buffer + 2);
+-
+- target_get_sess_cmd(&cmd->se_cmd, true);
+- sess_ref = true;
+-
+ switch (function) {
+ case ISCSI_TM_FUNC_ABORT_TASK:
+ tcm_function = TMR_ABORT_TASK;
+@@ -1947,12 +1945,8 @@ attach:
+ * For connection recovery, this is also the default action for
+ * TMR TASK_REASSIGN.
+ */
+- if (sess_ref) {
+- pr_debug("Handle TMR, using sess_ref=true check\n");
+- target_put_sess_cmd(&cmd->se_cmd);
+- }
+-
+ iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);
++ target_put_sess_cmd(&cmd->se_cmd);
+ return 0;
+ }
+ EXPORT_SYMBOL(iscsit_handle_task_mgt_cmd);
+diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
+index 39e8f22be68b..b2edb5f6e6b9 100644
+--- a/drivers/target/target_core_user.c
++++ b/drivers/target/target_core_user.c
+@@ -860,7 +860,7 @@ static int tcmu_configure_device(struct se_device *dev)
+ info->version = xstr(TCMU_MAILBOX_VERSION);
+
+ info->mem[0].name = "tcm-user command & data buffer";
+- info->mem[0].addr = (phys_addr_t) udev->mb_addr;
++ info->mem[0].addr = (phys_addr_t)(uintptr_t)udev->mb_addr;
+ info->mem[0].size = TCMU_RING_SIZE;
+ info->mem[0].memtype = UIO_MEM_VIRTUAL;
+
+diff --git a/drivers/thermal/spear_thermal.c b/drivers/thermal/spear_thermal.c
+index bddb71744a6c..9d42f88a4224 100644
+--- a/drivers/thermal/spear_thermal.c
++++ b/drivers/thermal/spear_thermal.c
+@@ -54,8 +54,7 @@ static struct thermal_zone_device_ops ops = {
+ .get_temp = thermal_get_temp,
+ };
+
+-#ifdef CONFIG_PM
+-static int spear_thermal_suspend(struct device *dev)
++static int __maybe_unused spear_thermal_suspend(struct device *dev)
+ {
+ struct platform_device *pdev = to_platform_device(dev);
+ struct thermal_zone_device *spear_thermal = platform_get_drvdata(pdev);
+@@ -72,7 +71,7 @@ static int spear_thermal_suspend(struct device *dev)
+ return 0;
+ }
+
+-static int spear_thermal_resume(struct device *dev)
++static int __maybe_unused spear_thermal_resume(struct device *dev)
+ {
+ struct platform_device *pdev = to_platform_device(dev);
+ struct thermal_zone_device *spear_thermal = platform_get_drvdata(pdev);
+@@ -94,7 +93,6 @@ static int spear_thermal_resume(struct device *dev)
+
+ return 0;
+ }
+-#endif
+
+ static SIMPLE_DEV_PM_OPS(spear_thermal_pm_ops, spear_thermal_suspend,
+ spear_thermal_resume);
+diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
+index c01f45095877..82c4d2e45319 100644
+--- a/drivers/tty/Kconfig
++++ b/drivers/tty/Kconfig
+@@ -226,7 +226,7 @@ config CYCLADES
+
+ config CYZ_INTR
+ bool "Cyclades-Z interrupt mode operation"
+- depends on CYCLADES
++ depends on CYCLADES && PCI
+ help
+ The Cyclades-Z family of multiport cards allows 2 (two) driver op
+ modes: polling and interrupt. In polling mode, the driver will check
+diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
+index 7a3d146a5f0e..5cc3ca1dd5c9 100644
+--- a/drivers/tty/hvc/hvc_xen.c
++++ b/drivers/tty/hvc/hvc_xen.c
+@@ -322,6 +322,7 @@ void xen_console_resume(void)
+ }
+ }
+
++#ifdef CONFIG_HVC_XEN_FRONTEND
+ static void xencons_disconnect_backend(struct xencons_info *info)
+ {
+ if (info->irq > 0)
+@@ -362,7 +363,6 @@ static int xen_console_remove(struct xencons_info *info)
+ return 0;
+ }
+
+-#ifdef CONFIG_HVC_XEN_FRONTEND
+ static int xencons_remove(struct xenbus_device *dev)
+ {
+ return xen_console_remove(dev_get_drvdata(&dev->dev));
+diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
+index aba20f66bdd9..66e257b5a5b7 100644
+--- a/drivers/tty/n_tty.c
++++ b/drivers/tty/n_tty.c
+@@ -1808,7 +1808,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
+ {
+ struct n_tty_data *ldata = tty->disc_data;
+
+- if (!old || (old->c_lflag ^ tty->termios.c_lflag) & ICANON) {
++ if (!old || (old->c_lflag ^ tty->termios.c_lflag) & (ICANON | EXTPROC)) {
+ bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE);
+ ldata->line_start = ldata->read_tail;
+ if (!L_ICANON(tty) || !read_cnt(ldata)) {
+@@ -2517,7 +2517,7 @@ static int n_tty_ioctl(struct tty_struct *tty, struct file *file,
+ return put_user(tty_chars_in_buffer(tty), (int __user *) arg);
+ case TIOCINQ:
+ down_write(&tty->termios_rwsem);
+- if (L_ICANON(tty))
++ if (L_ICANON(tty) && !L_EXTPROC(tty))
+ retval = inq_canon(ldata);
+ else
+ retval = read_cnt(ldata);
+diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
+index 529cc86283e7..9c27ee008dff 100644
+--- a/drivers/tty/sysrq.c
++++ b/drivers/tty/sysrq.c
+@@ -133,6 +133,12 @@ static void sysrq_handle_crash(int key)
+ {
+ char *killer = NULL;
+
++ /* we need to release the RCU read lock here,
++ * otherwise we get an annoying
++ * 'BUG: sleeping function called from invalid context'
++ * complaint from the kernel before the panic.
++ */
++ rcu_read_unlock();
+ panic_on_oops = 1; /* force panic */
+ wmb();
+ *killer = 1;
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index 463d8a3375f5..eeed4b45d35c 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -381,7 +381,7 @@ static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
+
+ res = usb_submit_urb(acm->read_urbs[index], mem_flags);
+ if (res) {
+- if (res != -EPERM) {
++ if (res != -EPERM && res != -ENODEV) {
+ dev_err(&acm->data->dev,
+ "%s - usb_submit_urb failed: %d\n",
+ __func__, res);
+@@ -1707,6 +1707,9 @@ static const struct usb_device_id acm_ids[] = {
+ { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
+ .driver_info = SINGLE_RX_URB, /* firmware bug */
+ },
++ { USB_DEVICE(0x11ca, 0x0201), /* VeriFone Mx870 Gadget Serial */
++ .driver_info = SINGLE_RX_URB,
++ },
+ { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
+ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
+ },
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 50010282c010..774c97bb1c08 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -57,10 +57,11 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* Microsoft LifeCam-VX700 v2.0 */
+ { USB_DEVICE(0x045e, 0x0770), .driver_info = USB_QUIRK_RESET_RESUME },
+
+- /* Logitech HD Pro Webcams C920, C920-C and C930e */
++ /* Logitech HD Pro Webcams C920, C920-C, C925e and C930e */
+ { USB_DEVICE(0x046d, 0x082d), .driver_info = USB_QUIRK_DELAY_INIT },
+ { USB_DEVICE(0x046d, 0x0841), .driver_info = USB_QUIRK_DELAY_INIT },
+ { USB_DEVICE(0x046d, 0x0843), .driver_info = USB_QUIRK_DELAY_INIT },
++ { USB_DEVICE(0x046d, 0x085b), .driver_info = USB_QUIRK_DELAY_INIT },
+
+ /* Logitech ConferenceCam CC3000e */
+ { USB_DEVICE(0x046d, 0x0847), .driver_info = USB_QUIRK_DELAY_INIT },
+@@ -154,6 +155,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* Genesys Logic hub, internally used by KY-688 USB 3.1 Type-C Hub */
+ { USB_DEVICE(0x05e3, 0x0612), .driver_info = USB_QUIRK_NO_LPM },
+
++ /* ELSA MicroLink 56K */
++ { USB_DEVICE(0x05cc, 0x2267), .driver_info = USB_QUIRK_RESET_RESUME },
++
+ /* Genesys Logic hub, internally used by Moshi USB to Ethernet Adapter */
+ { USB_DEVICE(0x05e3, 0x0616), .driver_info = USB_QUIRK_NO_LPM },
+
+@@ -221,6 +225,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ { USB_DEVICE(0x1a0a, 0x0200), .driver_info =
+ USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
+
++ /* Corsair K70 RGB */
++ { USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT },
++
+ /* Corsair Strafe RGB */
+ { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT },
+
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index ff56aaa00bf7..3ce30909cbe4 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -2376,6 +2376,8 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
+ break;
+ }
+
++ dwc->eps[1]->endpoint.maxpacket = dwc->gadget.ep0->maxpacket;
++
+ /* Enable USB2 LPM Capability */
+
+ if ((dwc->revision > DWC3_REVISION_194A)
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index a01d90fe37d9..54c15622e133 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -103,7 +103,6 @@ int config_ep_by_speed(struct usb_gadget *g,
+ struct usb_function *f,
+ struct usb_ep *_ep)
+ {
+- struct usb_composite_dev *cdev = get_gadget_data(g);
+ struct usb_endpoint_descriptor *chosen_desc = NULL;
+ struct usb_descriptor_header **speed_desc = NULL;
+
+@@ -170,8 +169,12 @@ ep_found:
+ _ep->maxburst = comp_desc->bMaxBurst + 1;
+ break;
+ default:
+- if (comp_desc->bMaxBurst != 0)
++ if (comp_desc->bMaxBurst != 0) {
++ struct usb_composite_dev *cdev;
++
++ cdev = get_gadget_data(g);
+ ERROR(cdev, "ep0 bMaxBurst must be 0\n");
++ }
+ _ep->maxburst = 1;
+ break;
+ }
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 2c25a5dec442..6b62bb5c021c 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -2756,10 +2756,8 @@ static int _ffs_func_bind(struct usb_configuration *c,
+ struct ffs_data *ffs = func->ffs;
+
+ const int full = !!func->ffs->fs_descs_count;
+- const int high = gadget_is_dualspeed(func->gadget) &&
+- func->ffs->hs_descs_count;
+- const int super = gadget_is_superspeed(func->gadget) &&
+- func->ffs->ss_descs_count;
++ const int high = !!func->ffs->hs_descs_count;
++ const int super = !!func->ffs->ss_descs_count;
+
+ int fs_len, hs_len, ss_len, ret, i;
+
+@@ -3486,7 +3484,8 @@ static void ffs_closed(struct ffs_data *ffs)
+ ci = opts->func_inst.group.cg_item.ci_parent->ci_parent;
+ ffs_dev_unlock();
+
+- unregister_gadget_item(ci);
++ if (test_bit(FFS_FL_BOUND, &ffs->flags))
++ unregister_gadget_item(ci);
+ return;
+ done:
+ ffs_dev_unlock();
+diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c
+index 7405ce32a690..0e704a857115 100644
+--- a/drivers/usb/gadget/function/f_uvc.c
++++ b/drivers/usb/gadget/function/f_uvc.c
+@@ -611,6 +611,14 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f)
+ opts->streaming_maxpacket = clamp(opts->streaming_maxpacket, 1U, 3072U);
+ opts->streaming_maxburst = min(opts->streaming_maxburst, 15U);
+
++ /* For SS, wMaxPacketSize has to be 1024 if bMaxBurst is not 0 */
++ if (opts->streaming_maxburst &&
++ (opts->streaming_maxpacket % 1024) != 0) {
++ opts->streaming_maxpacket = roundup(opts->streaming_maxpacket, 1024);
++ INFO(cdev, "overriding streaming_maxpacket to %d\n",
++ opts->streaming_maxpacket);
++ }
++
+ /* Fill in the FS/HS/SS Video Streaming specific descriptors from the
+ * module parameters.
+ *
+diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
+index 613547f07828..2e04d6596ac6 100644
+--- a/drivers/usb/gadget/udc/pch_udc.c
++++ b/drivers/usb/gadget/udc/pch_udc.c
+@@ -1534,7 +1534,6 @@ static void pch_udc_free_dma_chain(struct pch_udc_dev *dev,
+ td = phys_to_virt(addr);
+ addr2 = (dma_addr_t)td->next;
+ pci_pool_free(dev->data_requests, td, addr);
+- td->next = 0x00;
+ addr = addr2;
+ }
+ req->chain_len = 1;
+diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
+index 47d2c09e4f35..5cd4b286b198 100644
+--- a/drivers/usb/host/ohci-q.c
++++ b/drivers/usb/host/ohci-q.c
+@@ -1017,6 +1017,8 @@ skip_ed:
+ * have modified this list. normally it's just prepending
+ * entries (which we'd ignore), but paranoia won't hurt.
+ */
++ *last = ed->ed_next;
++ ed->ed_next = NULL;
+ modified = 0;
+
+ /* unlink urbs as requested, but rescan the list after
+@@ -1075,21 +1077,22 @@ rescan_this:
+ goto rescan_this;
+
+ /*
+- * If no TDs are queued, take ED off the ed_rm_list.
++ * If no TDs are queued, ED is now idle.
+ * Otherwise, if the HC is running, reschedule.
+- * If not, leave it on the list for further dequeues.
++ * If the HC isn't running, add ED back to the
++ * start of the list for later processing.
+ */
+ if (list_empty(&ed->td_list)) {
+- *last = ed->ed_next;
+- ed->ed_next = NULL;
+ ed->state = ED_IDLE;
+ list_del(&ed->in_use_list);
+ } else if (ohci->rh_state == OHCI_RH_RUNNING) {
+- *last = ed->ed_next;
+- ed->ed_next = NULL;
+ ed_schedule(ohci, ed);
+ } else {
+- last = &ed->ed_next;
++ ed->ed_next = ohci->ed_rm_list;
++ ohci->ed_rm_list = ed;
++ /* Don't loop on the same ED */
++ if (last == &ohci->ed_rm_list)
++ last = &ed->ed_next;
+ }
+
+ if (modified)
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index e91cbf360afe..8a82e14829e9 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -181,6 +181,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+ xhci->quirks |= XHCI_BROKEN_STREAMS;
+ }
++ if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
++ pdev->device == 0x0014)
++ xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+ if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
+ pdev->device == 0x0015)
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
+diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
+index 23c5bdab988d..e92b9903faa4 100644
+--- a/drivers/usb/host/xhci-plat.c
++++ b/drivers/usb/host/xhci-plat.c
+@@ -266,6 +266,7 @@ MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
+ static struct platform_driver usb_xhci_driver = {
+ .probe = xhci_plat_probe,
+ .remove = xhci_plat_remove,
++ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "xhci-hcd",
+ .pm = DEV_PM_OPS,
+diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
+index 82503a7ff6c8..2bbca7d674d6 100644
+--- a/drivers/usb/misc/ldusb.c
++++ b/drivers/usb/misc/ldusb.c
+@@ -46,6 +46,9 @@
+ #define USB_DEVICE_ID_LD_MICROCASSYTIME 0x1033 /* USB Product ID of Micro-CASSY Time (reserved) */
+ #define USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE 0x1035 /* USB Product ID of Micro-CASSY Temperature */
+ #define USB_DEVICE_ID_LD_MICROCASSYPH 0x1038 /* USB Product ID of Micro-CASSY pH */
++#define USB_DEVICE_ID_LD_POWERANALYSERCASSY 0x1040 /* USB Product ID of Power Analyser CASSY */
++#define USB_DEVICE_ID_LD_CONVERTERCONTROLLERCASSY 0x1042 /* USB Product ID of Converter Controller CASSY */
++#define USB_DEVICE_ID_LD_MACHINETESTCASSY 0x1043 /* USB Product ID of Machine Test CASSY */
+ #define USB_DEVICE_ID_LD_JWM 0x1080 /* USB Product ID of Joule and Wattmeter */
+ #define USB_DEVICE_ID_LD_DMMP 0x1081 /* USB Product ID of Digital Multimeter P (reserved) */
+ #define USB_DEVICE_ID_LD_UMIP 0x1090 /* USB Product ID of UMI P */
+@@ -94,6 +97,9 @@ static const struct usb_device_id ld_usb_table[] = {
+ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
+ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
+ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
++ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERANALYSERCASSY) },
++ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CONVERTERCONTROLLERCASSY) },
++ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETESTCASSY) },
+ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
+ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
+ { USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
+diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c
+index 64ff5b91752d..b117a1f6bfc3 100644
+--- a/drivers/usb/misc/usb3503.c
++++ b/drivers/usb/misc/usb3503.c
+@@ -292,6 +292,8 @@ static int usb3503_probe(struct usb3503 *hub)
+ if (gpio_is_valid(hub->gpio_reset)) {
+ err = devm_gpio_request_one(dev, hub->gpio_reset,
+ GPIOF_OUT_INIT_LOW, "usb3503 reset");
++ /* Datasheet defines a hardware reset to be at least 100us */
++ usleep_range(100, 10000);
+ if (err) {
+ dev_err(dev,
+ "unable to request GPIO %d as reset pin (%d)\n",
+diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
+index 9a62e89d6dc0..bbec84dd34fb 100644
+--- a/drivers/usb/mon/mon_bin.c
++++ b/drivers/usb/mon/mon_bin.c
+@@ -1000,7 +1000,9 @@ static long mon_bin_ioctl(struct file *file, unsigned int cmd, unsigned long arg
+ break;
+
+ case MON_IOCQ_RING_SIZE:
++ mutex_lock(&rp->fetch_lock);
+ ret = rp->b_size;
++ mutex_unlock(&rp->fetch_lock);
+ break;
+
+ case MON_IOCT_RING_SIZE:
+@@ -1227,12 +1229,16 @@ static int mon_bin_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+ unsigned long offset, chunk_idx;
+ struct page *pageptr;
+
++ mutex_lock(&rp->fetch_lock);
+ offset = vmf->pgoff << PAGE_SHIFT;
+- if (offset >= rp->b_size)
++ if (offset >= rp->b_size) {
++ mutex_unlock(&rp->fetch_lock);
+ return VM_FAULT_SIGBUS;
++ }
+ chunk_idx = offset / CHUNK_SIZE;
+ pageptr = rp->b_vec[chunk_idx].pg;
+ get_page(pageptr);
++ mutex_unlock(&rp->fetch_lock);
+ vmf->page = pageptr;
+ return 0;
+ }
+diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c
+index e93845c26bdb..c17495e7fcc5 100644
+--- a/drivers/usb/musb/ux500_dma.c
++++ b/drivers/usb/musb/ux500_dma.c
+@@ -207,9 +207,6 @@ static int ux500_dma_channel_program(struct dma_channel *channel,
+ BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN ||
+ channel->status == MUSB_DMA_STATUS_BUSY);
+
+- if (!ux500_dma_is_compatible(channel, packet_sz, (void *)dma_addr, len))
+- return false;
+-
+ channel->status = MUSB_DMA_STATUS_BUSY;
+ channel->actual_len = 0;
+ ret = ux500_configure_channel(channel, packet_sz, mode, dma_addr, len);
+diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
+index 8bb9367ada45..6f37966ea54b 100644
+--- a/drivers/usb/renesas_usbhs/fifo.c
++++ b/drivers/usb/renesas_usbhs/fifo.c
+@@ -999,6 +999,10 @@ static int usbhsf_dma_prepare_pop_with_usb_dmac(struct usbhs_pkt *pkt,
+ if ((uintptr_t)pkt->buf & (USBHS_USB_DMAC_XFER_SIZE - 1))
+ goto usbhsf_pio_prepare_pop;
+
++ /* return at this time if the pipe is running */
++ if (usbhs_pipe_is_running(pipe))
++ return 0;
++
+ usbhs_pipe_config_change_bfre(pipe, 1);
+
+ ret = usbhsf_fifo_select(pipe, fifo, 0);
+@@ -1189,6 +1193,7 @@ static int usbhsf_dma_pop_done_with_usb_dmac(struct usbhs_pkt *pkt,
+ usbhsf_fifo_clear(pipe, fifo);
+ pkt->actual = usbhs_dma_calc_received_size(pkt, chan, rcv_len);
+
++ usbhs_pipe_running(pipe, 0);
+ usbhsf_dma_stop(pipe, fifo);
+ usbhsf_dma_unmap(pkt);
+ usbhsf_fifo_unselect(pipe, pipe->fifo);
+diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
+index b7cf1982d1d9..941716c1177e 100644
+--- a/drivers/usb/serial/Kconfig
++++ b/drivers/usb/serial/Kconfig
+@@ -63,6 +63,7 @@ config USB_SERIAL_SIMPLE
+ - Google USB serial devices
+ - HP4x calculators
+ - a number of Motorola phones
++ - Motorola Tetra devices
+ - Novatel Wireless GPS receivers
+ - Siemens USB/MPI adapter.
+ - ViVOtech ViVOpay USB device.
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index b1be08570088..142c876e7b19 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -119,6 +119,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
+ { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */
+ { USB_DEVICE(0x10C4, 0x84B6) }, /* Starizona Hyperion */
++ { USB_DEVICE(0x10C4, 0x85A7) }, /* LifeScan OneTouch Verio IQ */
+ { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */
+ { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */
+ { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */
+@@ -168,6 +169,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */
+ { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
+ { USB_DEVICE(0x18EF, 0xE025) }, /* ELV Marble Sound Board 1 */
++ { USB_DEVICE(0x18EF, 0xE030) }, /* ELV ALC 8xxx Battery Charger */
+ { USB_DEVICE(0x18EF, 0xE032) }, /* ELV TFD500 Data Logger */
+ { USB_DEVICE(0x1901, 0x0190) }, /* GE B850 CP2105 Recorder interface */
+ { USB_DEVICE(0x1901, 0x0193) }, /* GE B650 CP2104 PMC interface */
+diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
+index 749e1b674145..6947985ccfb0 100644
+--- a/drivers/usb/serial/io_edgeport.c
++++ b/drivers/usb/serial/io_edgeport.c
+@@ -2219,7 +2219,6 @@ static int write_cmd_usb(struct edgeport_port *edge_port,
+ /* something went wrong */
+ dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
+ __func__, status);
+- usb_kill_urb(urb);
+ usb_free_urb(urb);
+ atomic_dec(&CmdUrbs);
+ return status;
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index dc489fb4261b..0d31ca1cbf35 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -277,6 +277,7 @@ static void option_instat_callback(struct urb *urb);
+ #define TELIT_PRODUCT_LE922_USBCFG3 0x1043
+ #define TELIT_PRODUCT_LE922_USBCFG5 0x1045
+ #define TELIT_PRODUCT_ME910 0x1100
++#define TELIT_PRODUCT_ME910_DUAL_MODEM 0x1101
+ #define TELIT_PRODUCT_LE920 0x1200
+ #define TELIT_PRODUCT_LE910 0x1201
+ #define TELIT_PRODUCT_LE910_USBCFG4 0x1206
+@@ -374,6 +375,9 @@ static void option_instat_callback(struct urb *urb);
+ #define FOUR_G_SYSTEMS_PRODUCT_W14 0x9603
+ #define FOUR_G_SYSTEMS_PRODUCT_W100 0x9b01
+
++/* Fujisoft products */
++#define FUJISOFT_PRODUCT_FS040U 0x9b02
++
+ /* iBall 3.5G connect wireless modem */
+ #define IBALL_3_5G_CONNECT 0x9605
+
+@@ -642,6 +646,11 @@ static const struct option_blacklist_info telit_me910_blacklist = {
+ .reserved = BIT(1) | BIT(3),
+ };
+
++static const struct option_blacklist_info telit_me910_dual_modem_blacklist = {
++ .sendsetup = BIT(0),
++ .reserved = BIT(3),
++};
++
+ static const struct option_blacklist_info telit_le910_blacklist = {
+ .sendsetup = BIT(0),
+ .reserved = BIT(1) | BIT(2),
+@@ -1241,6 +1250,8 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
+ .driver_info = (kernel_ulong_t)&telit_me910_blacklist },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM),
++ .driver_info = (kernel_ulong_t)&telit_me910_dual_modem_blacklist },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
+ .driver_info = (kernel_ulong_t)&telit_le910_blacklist },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG4),
+@@ -1874,6 +1885,8 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(LONGCHEER_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W100),
+ .driver_info = (kernel_ulong_t)&four_g_w100_blacklist
+ },
++ {USB_DEVICE(LONGCHEER_VENDOR_ID, FUJISOFT_PRODUCT_FS040U),
++ .driver_info = (kernel_ulong_t)&net_intf3_blacklist},
+ { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, SPEEDUP_PRODUCT_SU9800, 0xff) },
+ { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, 0x9801, 0xff),
+ .driver_info = (kernel_ulong_t)&net_intf3_blacklist },
+diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
+index a51b28379850..3da25ad267a2 100644
+--- a/drivers/usb/serial/pl2303.c
++++ b/drivers/usb/serial/pl2303.c
+@@ -39,6 +39,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) },
++ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_CHILITAG) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) },
+diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
+index 3b5a15d1dc0d..123289085ee2 100644
+--- a/drivers/usb/serial/pl2303.h
++++ b/drivers/usb/serial/pl2303.h
+@@ -17,6 +17,7 @@
+ #define PL2303_PRODUCT_ID_DCU11 0x1234
+ #define PL2303_PRODUCT_ID_PHAROS 0xaaa0
+ #define PL2303_PRODUCT_ID_RSAQ3 0xaaa2
++#define PL2303_PRODUCT_ID_CHILITAG 0xaaa8
+ #define PL2303_PRODUCT_ID_ALDIGA 0x0611
+ #define PL2303_PRODUCT_ID_MMX 0x0612
+ #define PL2303_PRODUCT_ID_GPRS 0x0609
+diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
+index e98b6e57b703..6aa7ff2c1cf7 100644
+--- a/drivers/usb/serial/usb-serial-simple.c
++++ b/drivers/usb/serial/usb-serial-simple.c
+@@ -80,6 +80,11 @@ DEVICE(vivopay, VIVOPAY_IDS);
+ { USB_DEVICE(0x22b8, 0x2c64) } /* Motorola V950 phone */
+ DEVICE(moto_modem, MOTO_IDS);
+
++/* Motorola Tetra driver */
++#define MOTOROLA_TETRA_IDS() \
++ { USB_DEVICE(0x0cad, 0x9011) } /* Motorola Solutions TETRA PEI */
++DEVICE(motorola_tetra, MOTOROLA_TETRA_IDS);
++
+ /* Novatel Wireless GPS driver */
+ #define NOVATEL_IDS() \
+ { USB_DEVICE(0x09d7, 0x0100) } /* NovAtel FlexPack GPS */
+@@ -110,6 +115,7 @@ static struct usb_serial_driver * const serial_drivers[] = {
+ &google_device,
+ &vivopay_device,
+ &moto_modem_device,
++ &motorola_tetra_device,
+ &novatel_gps_device,
+ &hp4x_device,
+ &suunto_device,
+@@ -125,6 +131,7 @@ static const struct usb_device_id id_table[] = {
+ GOOGLE_IDS(),
+ VIVOPAY_IDS(),
+ MOTO_IDS(),
++ MOTOROLA_TETRA_IDS(),
+ NOVATEL_IDS(),
+ HP4X_IDS(),
+ SUUNTO_IDS(),
+diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
+index f58ae4a84c11..021d6880a3ed 100644
+--- a/drivers/usb/storage/uas.c
++++ b/drivers/usb/storage/uas.c
+@@ -1052,20 +1052,19 @@ static int uas_post_reset(struct usb_interface *intf)
+ return 0;
+
+ err = uas_configure_endpoints(devinfo);
+- if (err) {
++ if (err && err != ENODEV)
+ shost_printk(KERN_ERR, shost,
+ "%s: alloc streams error %d after reset",
+ __func__, err);
+- return 1;
+- }
+
++ /* we must unblock the host in every case lest we deadlock */
+ spin_lock_irqsave(shost->host_lock, flags);
+ scsi_report_bus_reset(shost, 0);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ scsi_unblock_requests(shost);
+
+- return 0;
++ return err ? 1 : 0;
+ }
+
+ static int uas_suspend(struct usb_interface *intf, pm_message_t message)
+diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
+index 2f80163ffb94..8ed80f28416f 100644
+--- a/drivers/usb/storage/unusual_uas.h
++++ b/drivers/usb/storage/unusual_uas.h
+@@ -155,6 +155,13 @@ UNUSUAL_DEV(0x2109, 0x0711, 0x0000, 0x9999,
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_NO_ATA_1X),
+
++/* Reported-by: Icenowy Zheng <icenowy@aosc.io> */
++UNUSUAL_DEV(0x2537, 0x1068, 0x0000, 0x9999,
++ "Norelsys",
++ "NS1068X",
++ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
++ US_FL_IGNORE_UAS),
++
+ /* Reported-by: Takeo Nakayama <javhera@gmx.com> */
+ UNUSUAL_DEV(0x357d, 0x7788, 0x0000, 0x9999,
+ "JMicron",
+diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c
+index a3ec49bdc1e6..0931f3271119 100644
+--- a/drivers/usb/usbip/stub_dev.c
++++ b/drivers/usb/usbip/stub_dev.c
+@@ -87,6 +87,7 @@ static ssize_t store_sockfd(struct device *dev, struct device_attribute *attr,
+ goto err;
+
+ sdev->ud.tcp_socket = socket;
++ sdev->ud.sockfd = sockfd;
+
+ spin_unlock_irq(&sdev->ud.lock);
+
+@@ -163,8 +164,7 @@ static void stub_shutdown_connection(struct usbip_device *ud)
+ * step 1?
+ */
+ if (ud->tcp_socket) {
+- dev_dbg(&sdev->udev->dev, "shutdown tcp_socket %p\n",
+- ud->tcp_socket);
++ dev_dbg(&sdev->udev->dev, "shutdown sockfd %d\n", ud->sockfd);
+ kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR);
+ }
+
+@@ -187,6 +187,7 @@ static void stub_shutdown_connection(struct usbip_device *ud)
+ if (ud->tcp_socket) {
+ sockfd_put(ud->tcp_socket);
+ ud->tcp_socket = NULL;
++ ud->sockfd = -1;
+ }
+
+ /* 3. free used data */
+@@ -281,6 +282,7 @@ static struct stub_device *stub_device_alloc(struct usb_device *udev)
+ sdev->ud.status = SDEV_ST_AVAILABLE;
+ spin_lock_init(&sdev->ud.lock);
+ sdev->ud.tcp_socket = NULL;
++ sdev->ud.sockfd = -1;
+
+ INIT_LIST_HEAD(&sdev->priv_init);
+ INIT_LIST_HEAD(&sdev->priv_tx);
+diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c
+index af10f7b131a4..325b4c05acdd 100644
+--- a/drivers/usb/usbip/stub_main.c
++++ b/drivers/usb/usbip/stub_main.c
+@@ -252,11 +252,12 @@ void stub_device_cleanup_urbs(struct stub_device *sdev)
+ struct stub_priv *priv;
+ struct urb *urb;
+
+- dev_dbg(&sdev->udev->dev, "free sdev %p\n", sdev);
++ dev_dbg(&sdev->udev->dev, "Stub device cleaning up urbs\n");
+
+ while ((priv = stub_priv_pop(sdev))) {
+ urb = priv->urb;
+- dev_dbg(&sdev->udev->dev, "free urb %p\n", urb);
++ dev_dbg(&sdev->udev->dev, "free urb seqnum %lu\n",
++ priv->seqnum);
+ usb_kill_urb(urb);
+
+ kmem_cache_free(stub_priv_cache, priv);
+diff --git a/drivers/usb/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c
+index 00e475c51a12..56cacb68040c 100644
+--- a/drivers/usb/usbip/stub_rx.c
++++ b/drivers/usb/usbip/stub_rx.c
+@@ -230,9 +230,6 @@ static int stub_recv_cmd_unlink(struct stub_device *sdev,
+ if (priv->seqnum != pdu->u.cmd_unlink.seqnum)
+ continue;
+
+- dev_info(&priv->urb->dev->dev, "unlink urb %p\n",
+- priv->urb);
+-
+ /*
+ * This matched urb is not completed yet (i.e., be in
+ * flight in usb hcd hardware/driver). Now we are
+@@ -271,8 +268,8 @@ static int stub_recv_cmd_unlink(struct stub_device *sdev,
+ ret = usb_unlink_urb(priv->urb);
+ if (ret != -EINPROGRESS)
+ dev_err(&priv->urb->dev->dev,
+- "failed to unlink a urb %p, ret %d\n",
+- priv->urb, ret);
++ "failed to unlink a urb # %lu, ret %d\n",
++ priv->seqnum, ret);
+
+ return 0;
+ }
+@@ -341,23 +338,26 @@ static struct stub_priv *stub_priv_alloc(struct stub_device *sdev,
+ return priv;
+ }
+
+-static int get_pipe(struct stub_device *sdev, int epnum, int dir)
++static int get_pipe(struct stub_device *sdev, struct usbip_header *pdu)
+ {
+ struct usb_device *udev = sdev->udev;
+ struct usb_host_endpoint *ep;
+ struct usb_endpoint_descriptor *epd = NULL;
++ int epnum = pdu->base.ep;
++ int dir = pdu->base.direction;
++
++ if (epnum < 0 || epnum > 15)
++ goto err_ret;
+
+ if (dir == USBIP_DIR_IN)
+ ep = udev->ep_in[epnum & 0x7f];
+ else
+ ep = udev->ep_out[epnum & 0x7f];
+- if (!ep) {
+- dev_err(&sdev->interface->dev, "no such endpoint?, %d\n",
+- epnum);
+- BUG();
+- }
++ if (!ep)
++ goto err_ret;
+
+ epd = &ep->desc;
++
+ if (usb_endpoint_xfer_control(epd)) {
+ if (dir == USBIP_DIR_OUT)
+ return usb_sndctrlpipe(udev, epnum);
+@@ -380,15 +380,37 @@ static int get_pipe(struct stub_device *sdev, int epnum, int dir)
+ }
+
+ if (usb_endpoint_xfer_isoc(epd)) {
++ /* validate packet size and number of packets */
++ unsigned int maxp, packets, bytes;
++
++#define USB_EP_MAXP_MULT_SHIFT 11
++#define USB_EP_MAXP_MULT_MASK (3 << USB_EP_MAXP_MULT_SHIFT)
++#define USB_EP_MAXP_MULT(m) \
++ (((m) & USB_EP_MAXP_MULT_MASK) >> USB_EP_MAXP_MULT_SHIFT)
++
++ maxp = usb_endpoint_maxp(epd);
++ maxp *= (USB_EP_MAXP_MULT(
++ __le16_to_cpu(epd->wMaxPacketSize)) + 1);
++ bytes = pdu->u.cmd_submit.transfer_buffer_length;
++ packets = DIV_ROUND_UP(bytes, maxp);
++
++ if (pdu->u.cmd_submit.number_of_packets < 0 ||
++ pdu->u.cmd_submit.number_of_packets > packets) {
++ dev_err(&sdev->udev->dev,
++ "CMD_SUBMIT: isoc invalid num packets %d\n",
++ pdu->u.cmd_submit.number_of_packets);
++ return -1;
++ }
+ if (dir == USBIP_DIR_OUT)
+ return usb_sndisocpipe(udev, epnum);
+ else
+ return usb_rcvisocpipe(udev, epnum);
+ }
+
++err_ret:
+ /* NOT REACHED */
+- dev_err(&sdev->interface->dev, "get pipe, epnum %d\n", epnum);
+- return 0;
++ dev_err(&sdev->udev->dev, "CMD_SUBMIT: invalid epnum %d\n", epnum);
++ return -1;
+ }
+
+ static void masking_bogus_flags(struct urb *urb)
+@@ -452,7 +474,10 @@ static void stub_recv_cmd_submit(struct stub_device *sdev,
+ struct stub_priv *priv;
+ struct usbip_device *ud = &sdev->ud;
+ struct usb_device *udev = sdev->udev;
+- int pipe = get_pipe(sdev, pdu->base.ep, pdu->base.direction);
++ int pipe = get_pipe(sdev, pdu);
++
++ if (pipe == -1)
++ return;
+
+ priv = stub_priv_alloc(sdev, pdu);
+ if (!priv)
+diff --git a/drivers/usb/usbip/stub_tx.c b/drivers/usb/usbip/stub_tx.c
+index af858d52608a..f4dd30c56f36 100644
+--- a/drivers/usb/usbip/stub_tx.c
++++ b/drivers/usb/usbip/stub_tx.c
+@@ -201,8 +201,8 @@ static int stub_send_ret_submit(struct stub_device *sdev)
+
+ /* 1. setup usbip_header */
+ setup_ret_submit_pdu(&pdu_header, urb);
+- usbip_dbg_stub_tx("setup txdata seqnum: %d urb: %p\n",
+- pdu_header.base.seqnum, urb);
++ usbip_dbg_stub_tx("setup txdata seqnum: %d\n",
++ pdu_header.base.seqnum);
+ usbip_header_correct_endian(&pdu_header, 1);
+
+ iov[iovnum].iov_base = &pdu_header;
+diff --git a/drivers/usb/usbip/usbip_common.c b/drivers/usb/usbip/usbip_common.c
+index e40da7759a0e..1838f1b2c2fa 100644
+--- a/drivers/usb/usbip/usbip_common.c
++++ b/drivers/usb/usbip/usbip_common.c
+@@ -103,7 +103,7 @@ static void usbip_dump_usb_device(struct usb_device *udev)
+ dev_dbg(dev, " devnum(%d) devpath(%s) usb speed(%s)",
+ udev->devnum, udev->devpath, usb_speed_string(udev->speed));
+
+- pr_debug("tt %p, ttport %d\n", udev->tt, udev->ttport);
++ pr_debug("tt hub ttport %d\n", udev->ttport);
+
+ dev_dbg(dev, " ");
+ for (i = 0; i < 16; i++)
+@@ -136,12 +136,8 @@ static void usbip_dump_usb_device(struct usb_device *udev)
+ }
+ pr_debug("\n");
+
+- dev_dbg(dev, "parent %p, bus %p\n", udev->parent, udev->bus);
+-
+- dev_dbg(dev,
+- "descriptor %p, config %p, actconfig %p, rawdescriptors %p\n",
+- &udev->descriptor, udev->config,
+- udev->actconfig, udev->rawdescriptors);
++ dev_dbg(dev, "parent %s, bus %s\n", dev_name(&udev->parent->dev),
++ udev->bus->bus_name);
+
+ dev_dbg(dev, "have_langid %d, string_langid %d\n",
+ udev->have_langid, udev->string_langid);
+@@ -249,9 +245,6 @@ void usbip_dump_urb(struct urb *urb)
+
+ dev = &urb->dev->dev;
+
+- dev_dbg(dev, " urb :%p\n", urb);
+- dev_dbg(dev, " dev :%p\n", urb->dev);
+-
+ usbip_dump_usb_device(urb->dev);
+
+ dev_dbg(dev, " pipe :%08x ", urb->pipe);
+@@ -260,11 +253,9 @@ void usbip_dump_urb(struct urb *urb)
+
+ dev_dbg(dev, " status :%d\n", urb->status);
+ dev_dbg(dev, " transfer_flags :%08X\n", urb->transfer_flags);
+- dev_dbg(dev, " transfer_buffer :%p\n", urb->transfer_buffer);
+ dev_dbg(dev, " transfer_buffer_length:%d\n",
+ urb->transfer_buffer_length);
+ dev_dbg(dev, " actual_length :%d\n", urb->actual_length);
+- dev_dbg(dev, " setup_packet :%p\n", urb->setup_packet);
+
+ if (urb->setup_packet && usb_pipetype(urb->pipe) == PIPE_CONTROL)
+ usbip_dump_usb_ctrlrequest(
+@@ -274,8 +265,6 @@ void usbip_dump_urb(struct urb *urb)
+ dev_dbg(dev, " number_of_packets :%d\n", urb->number_of_packets);
+ dev_dbg(dev, " interval :%d\n", urb->interval);
+ dev_dbg(dev, " error_count :%d\n", urb->error_count);
+- dev_dbg(dev, " context :%p\n", urb->context);
+- dev_dbg(dev, " complete :%p\n", urb->complete);
+ }
+ EXPORT_SYMBOL_GPL(usbip_dump_urb);
+
+@@ -328,18 +317,14 @@ int usbip_recv(struct socket *sock, void *buf, int size)
+ struct msghdr msg;
+ struct kvec iov;
+ int total = 0;
+-
+ /* for blocks of if (usbip_dbg_flag_xmit) */
+ char *bp = buf;
+ int osize = size;
+
+- usbip_dbg_xmit("enter\n");
+-
+- if (!sock || !buf || !size) {
+- pr_err("invalid arg, sock %p buff %p size %d\n", sock, buf,
+- size);
++ if (!sock || !buf || !size)
+ return -EINVAL;
+- }
++
++ usbip_dbg_xmit("enter\n");
+
+ do {
+ sock->sk->sk_allocation = GFP_NOIO;
+@@ -352,11 +337,8 @@ int usbip_recv(struct socket *sock, void *buf, int size)
+ msg.msg_flags = MSG_NOSIGNAL;
+
+ result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL);
+- if (result <= 0) {
+- pr_debug("receive sock %p buf %p size %u ret %d total %d\n",
+- sock, buf, size, result, total);
++ if (result <= 0)
+ goto err;
+- }
+
+ size -= result;
+ buf += result;
+diff --git a/drivers/usb/usbip/usbip_common.h b/drivers/usb/usbip/usbip_common.h
+index 86b08475c254..f875ccaa55f9 100644
+--- a/drivers/usb/usbip/usbip_common.h
++++ b/drivers/usb/usbip/usbip_common.h
+@@ -261,6 +261,7 @@ struct usbip_device {
+ /* lock for status */
+ spinlock_t lock;
+
++ int sockfd;
+ struct socket *tcp_socket;
+
+ struct task_struct *tcp_rx;
+diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
+index e9ef1eccdace..17498af82b69 100644
+--- a/drivers/usb/usbip/vhci_hcd.c
++++ b/drivers/usb/usbip/vhci_hcd.c
+@@ -462,9 +462,6 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
+ int ret = 0;
+ struct vhci_device *vdev;
+
+- usbip_dbg_vhci_hc("enter, usb_hcd %p urb %p mem_flags %d\n",
+- hcd, urb, mem_flags);
+-
+ /* patch to usb_sg_init() is in 2.5.60 */
+ BUG_ON(!urb->transfer_buffer && urb->transfer_buffer_length);
+
+@@ -620,8 +617,6 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+ struct vhci_priv *priv;
+ struct vhci_device *vdev;
+
+- pr_info("dequeue a urb %p\n", urb);
+-
+ spin_lock(&the_controller->lock);
+
+ priv = urb->hcpriv;
+@@ -649,7 +644,6 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+ /* tcp connection is closed */
+ spin_lock(&vdev->priv_lock);
+
+- pr_info("device %p seems to be disconnected\n", vdev);
+ list_del(&priv->list);
+ kfree(priv);
+ urb->hcpriv = NULL;
+@@ -661,8 +655,6 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+ * vhci_rx will receive RET_UNLINK and give back the URB.
+ * Otherwise, we give back it here.
+ */
+- pr_info("gives back urb %p\n", urb);
+-
+ usb_hcd_unlink_urb_from_ep(hcd, urb);
+
+ spin_unlock(&the_controller->lock);
+@@ -691,8 +683,6 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+
+ unlink->unlink_seqnum = priv->seqnum;
+
+- pr_info("device %p seems to be still connected\n", vdev);
+-
+ /* send cmd_unlink and try to cancel the pending URB in the
+ * peer */
+ list_add_tail(&unlink->list, &vdev->unlink_tx);
+@@ -771,7 +761,7 @@ static void vhci_shutdown_connection(struct usbip_device *ud)
+
+ /* need this? see stub_dev.c */
+ if (ud->tcp_socket) {
+- pr_debug("shutdown tcp_socket %p\n", ud->tcp_socket);
++ pr_debug("shutdown sockfd %d\n", ud->sockfd);
+ kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR);
+ }
+
+@@ -790,6 +780,7 @@ static void vhci_shutdown_connection(struct usbip_device *ud)
+ if (vdev->ud.tcp_socket) {
+ sockfd_put(vdev->ud.tcp_socket);
+ vdev->ud.tcp_socket = NULL;
++ vdev->ud.sockfd = -1;
+ }
+ pr_info("release socket\n");
+
+@@ -836,6 +827,7 @@ static void vhci_device_reset(struct usbip_device *ud)
+ if (ud->tcp_socket) {
+ sockfd_put(ud->tcp_socket);
+ ud->tcp_socket = NULL;
++ ud->sockfd = -1;
+ }
+ ud->status = VDEV_ST_NULL;
+
+diff --git a/drivers/usb/usbip/vhci_rx.c b/drivers/usb/usbip/vhci_rx.c
+index 00e4a54308e4..bc4eb0855314 100644
+--- a/drivers/usb/usbip/vhci_rx.c
++++ b/drivers/usb/usbip/vhci_rx.c
+@@ -37,24 +37,23 @@ struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum)
+ urb = priv->urb;
+ status = urb->status;
+
+- usbip_dbg_vhci_rx("find urb %p vurb %p seqnum %u\n",
+- urb, priv, seqnum);
++ usbip_dbg_vhci_rx("find urb seqnum %u\n", seqnum);
+
+ switch (status) {
+ case -ENOENT:
+ /* fall through */
+ case -ECONNRESET:
+- dev_info(&urb->dev->dev,
+- "urb %p was unlinked %ssynchronuously.\n", urb,
+- status == -ENOENT ? "" : "a");
++ dev_dbg(&urb->dev->dev,
++ "urb seq# %u was unlinked %ssynchronuously\n",
++ seqnum, status == -ENOENT ? "" : "a");
+ break;
+ case -EINPROGRESS:
+ /* no info output */
+ break;
+ default:
+- dev_info(&urb->dev->dev,
+- "urb %p may be in a error, status %d\n", urb,
+- status);
++ dev_dbg(&urb->dev->dev,
++ "urb seq# %u may be in a error, status %d\n",
++ seqnum, status);
+ }
+
+ list_del(&priv->list);
+@@ -78,8 +77,8 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev,
+ spin_unlock(&vdev->priv_lock);
+
+ if (!urb) {
+- pr_err("cannot find a urb of seqnum %u\n", pdu->base.seqnum);
+- pr_info("max seqnum %d\n",
++ pr_err("cannot find a urb of seqnum %u max seqnum %d\n",
++ pdu->base.seqnum,
+ atomic_read(&the_controller->seqnum));
+ usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
+ return;
+@@ -102,7 +101,7 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev,
+ if (usbip_dbg_flag_vhci_rx)
+ usbip_dump_urb(urb);
+
+- usbip_dbg_vhci_rx("now giveback urb %p\n", urb);
++ usbip_dbg_vhci_rx("now giveback urb %u\n", pdu->base.seqnum);
+
+ spin_lock(&the_controller->lock);
+ usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb);
+@@ -165,7 +164,7 @@ static void vhci_recv_ret_unlink(struct vhci_device *vdev,
+ pr_info("the urb (seqnum %d) was already given back\n",
+ pdu->base.seqnum);
+ } else {
+- usbip_dbg_vhci_rx("now giveback urb %p\n", urb);
++ usbip_dbg_vhci_rx("now giveback urb %d\n", pdu->base.seqnum);
+
+ /* If unlink is successful, status is -ECONNRESET */
+ urb->status = pdu->u.ret_unlink.status;
+diff --git a/drivers/usb/usbip/vhci_sysfs.c b/drivers/usb/usbip/vhci_sysfs.c
+index 211f43f67ea2..84c21c4ccf46 100644
+--- a/drivers/usb/usbip/vhci_sysfs.c
++++ b/drivers/usb/usbip/vhci_sysfs.c
+@@ -39,16 +39,20 @@ static ssize_t status_show(struct device *dev, struct device_attribute *attr,
+
+ /*
+ * output example:
+- * prt sta spd dev socket local_busid
+- * 000 004 000 000 c5a7bb80 1-2.3
+- * 001 004 000 000 d8cee980 2-3.4
++ * port sta spd dev sockfd local_busid
++ * 0000 004 000 00000000 000003 1-2.3
++ * 0001 004 000 00000000 000004 2-3.4
+ *
+- * IP address can be retrieved from a socket pointer address by looking
+- * up /proc/net/{tcp,tcp6}. Also, a userland program may remember a
+- * port number and its peer IP address.
++ * Output includes socket fd instead of socket pointer address to
++ * avoid leaking kernel memory address in:
++ * /sys/devices/platform/vhci_hcd.0/status and in debug output.
++ * The socket pointer address is not used at the moment and it was
++ * made visible as a convenient way to find IP address from socket
++ * pointer address by looking up /proc/net/{tcp,tcp6}. As this opens
++ * a security hole, the change is made to use sockfd instead.
+ */
+ out += sprintf(out,
+- "prt sta spd bus dev socket local_busid\n");
++ "prt sta spd bus dev sockfd local_busid\n");
+
+ for (i = 0; i < VHCI_NPORTS; i++) {
+ struct vhci_device *vdev = port_to_vdev(i);
+@@ -60,11 +64,11 @@ static ssize_t status_show(struct device *dev, struct device_attribute *attr,
+ out += sprintf(out, "%03u %08x ",
+ vdev->speed, vdev->devid);
+ out += sprintf(out, "%16p ", vdev->ud.tcp_socket);
++ out += sprintf(out, "%06u", vdev->ud.sockfd);
+ out += sprintf(out, "%s", dev_name(&vdev->udev->dev));
+
+- } else {
+- out += sprintf(out, "000 000 000 0000000000000000 0-0");
+- }
++ } else
++ out += sprintf(out, "000 000 000 000000 0-0");
+
+ out += sprintf(out, "\n");
+ spin_unlock(&vdev->ud.lock);
+@@ -223,6 +227,7 @@ static ssize_t store_attach(struct device *dev, struct device_attribute *attr,
+
+ vdev->devid = devid;
+ vdev->speed = speed;
++ vdev->ud.sockfd = sockfd;
+ vdev->ud.tcp_socket = socket;
+ vdev->ud.status = VDEV_ST_NOTASSIGNED;
+
+diff --git a/drivers/usb/usbip/vhci_tx.c b/drivers/usb/usbip/vhci_tx.c
+index 409fd99f3257..3c5796c8633a 100644
+--- a/drivers/usb/usbip/vhci_tx.c
++++ b/drivers/usb/usbip/vhci_tx.c
+@@ -82,7 +82,8 @@ static int vhci_send_cmd_submit(struct vhci_device *vdev)
+ memset(&msg, 0, sizeof(msg));
+ memset(&iov, 0, sizeof(iov));
+
+- usbip_dbg_vhci_tx("setup txdata urb %p\n", urb);
++ usbip_dbg_vhci_tx("setup txdata urb seqnum %lu\n",
++ priv->seqnum);
+
+ /* 1. setup usbip_header */
+ setup_cmd_submit_pdu(&pdu_header, urb);
+diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
+index 7d137a43cc86..14265c4c0203 100644
+--- a/drivers/vhost/net.c
++++ b/drivers/vhost/net.c
+@@ -982,6 +982,7 @@ static long vhost_net_reset_owner(struct vhost_net *n)
+ }
+ vhost_net_stop(n, &tx_sock, &rx_sock);
+ vhost_net_flush(n);
++ vhost_dev_stop(&n->dev);
+ vhost_dev_reset_owner(&n->dev, memory);
+ vhost_net_vq_reset(n);
+ done:
+diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
+index 6897f1c1bc73..95d01562ffa2 100644
+--- a/drivers/video/backlight/pwm_bl.c
++++ b/drivers/video/backlight/pwm_bl.c
+@@ -79,14 +79,17 @@ static void pwm_backlight_power_off(struct pwm_bl_data *pb)
+ static int compute_duty_cycle(struct pwm_bl_data *pb, int brightness)
+ {
+ unsigned int lth = pb->lth_brightness;
+- int duty_cycle;
++ u64 duty_cycle;
+
+ if (pb->levels)
+ duty_cycle = pb->levels[brightness];
+ else
+ duty_cycle = brightness;
+
+- return (duty_cycle * (pb->period - lth) / pb->scale) + lth;
++ duty_cycle *= pb->period - lth;
++ do_div(duty_cycle, pb->scale);
++
++ return duty_cycle + lth;
+ }
+
+ static int pwm_backlight_update_status(struct backlight_device *bl)
+diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
+index 0efc52f11ad0..b30e7d87804b 100644
+--- a/drivers/video/console/dummycon.c
++++ b/drivers/video/console/dummycon.c
+@@ -68,7 +68,6 @@ const struct consw dummy_con = {
+ .con_switch = DUMMY,
+ .con_blank = DUMMY,
+ .con_font_set = DUMMY,
+- .con_font_get = DUMMY,
+ .con_font_default = DUMMY,
+ .con_font_copy = DUMMY,
+ .con_set_palette = DUMMY,
+diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
+index 44eb7c737ea2..34af3a26472c 100644
+--- a/drivers/video/fbdev/Kconfig
++++ b/drivers/video/fbdev/Kconfig
+@@ -1506,6 +1506,7 @@ config FB_SIS
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
+ select FB_BOOT_VESA_SUPPORT if FB_SIS = y
++ select FB_SIS_300 if !FB_SIS_315
+ help
+ This is the frame buffer device driver for the SiS 300, 315, 330
+ and 340 series as well as XGI V3XT, V5, V8, Z7 graphics chipsets.
+diff --git a/drivers/video/fbdev/atmel_lcdfb.c b/drivers/video/fbdev/atmel_lcdfb.c
+index 94a8d04e60f9..b16a1c16e212 100644
+--- a/drivers/video/fbdev/atmel_lcdfb.c
++++ b/drivers/video/fbdev/atmel_lcdfb.c
+@@ -1121,7 +1121,7 @@ static int atmel_lcdfb_of_init(struct atmel_lcdfb_info *sinfo)
+ goto put_display_node;
+ }
+
+- timings_np = of_find_node_by_name(display_np, "display-timings");
++ timings_np = of_get_child_by_name(display_np, "display-timings");
+ if (!timings_np) {
+ dev_err(dev, "failed to find display-timings node\n");
+ ret = -ENODEV;
+@@ -1142,6 +1142,12 @@ static int atmel_lcdfb_of_init(struct atmel_lcdfb_info *sinfo)
+ fb_add_videomode(&fb_vm, &info->modelist);
+ }
+
++ /*
++ * FIXME: Make sure we are not referencing any fields in display_np
++ * and timings_np and drop our references to them before returning to
++ * avoid leaking the nodes on probe deferral and driver unbind.
++ */
++
+ return 0;
+
+ put_timings_node:
+diff --git a/drivers/video/fbdev/auo_k190x.c b/drivers/video/fbdev/auo_k190x.c
+index 8d2499d1cafb..9580374667ba 100644
+--- a/drivers/video/fbdev/auo_k190x.c
++++ b/drivers/video/fbdev/auo_k190x.c
+@@ -773,9 +773,7 @@ static void auok190x_recover(struct auok190xfb_par *par)
+ /*
+ * Power-management
+ */
+-
+-#ifdef CONFIG_PM
+-static int auok190x_runtime_suspend(struct device *dev)
++static int __maybe_unused auok190x_runtime_suspend(struct device *dev)
+ {
+ struct platform_device *pdev = to_platform_device(dev);
+ struct fb_info *info = platform_get_drvdata(pdev);
+@@ -822,7 +820,7 @@ finish:
+ return 0;
+ }
+
+-static int auok190x_runtime_resume(struct device *dev)
++static int __maybe_unused auok190x_runtime_resume(struct device *dev)
+ {
+ struct platform_device *pdev = to_platform_device(dev);
+ struct fb_info *info = platform_get_drvdata(pdev);
+@@ -856,7 +854,7 @@ static int auok190x_runtime_resume(struct device *dev)
+ return 0;
+ }
+
+-static int auok190x_suspend(struct device *dev)
++static int __maybe_unused auok190x_suspend(struct device *dev)
+ {
+ struct platform_device *pdev = to_platform_device(dev);
+ struct fb_info *info = platform_get_drvdata(pdev);
+@@ -896,7 +894,7 @@ static int auok190x_suspend(struct device *dev)
+ return 0;
+ }
+
+-static int auok190x_resume(struct device *dev)
++static int __maybe_unused auok190x_resume(struct device *dev)
+ {
+ struct platform_device *pdev = to_platform_device(dev);
+ struct fb_info *info = platform_get_drvdata(pdev);
+@@ -933,7 +931,6 @@ static int auok190x_resume(struct device *dev)
+
+ return 0;
+ }
+-#endif
+
+ const struct dev_pm_ops auok190x_pm = {
+ SET_RUNTIME_PM_OPS(auok190x_runtime_suspend, auok190x_runtime_resume,
+diff --git a/drivers/video/fbdev/exynos/s6e8ax0.c b/drivers/video/fbdev/exynos/s6e8ax0.c
+index 95873f26e39c..de2f3e793786 100644
+--- a/drivers/video/fbdev/exynos/s6e8ax0.c
++++ b/drivers/video/fbdev/exynos/s6e8ax0.c
+@@ -829,8 +829,7 @@ static int s6e8ax0_probe(struct mipi_dsim_lcd_device *dsim_dev)
+ return 0;
+ }
+
+-#ifdef CONFIG_PM
+-static int s6e8ax0_suspend(struct mipi_dsim_lcd_device *dsim_dev)
++static int __maybe_unused s6e8ax0_suspend(struct mipi_dsim_lcd_device *dsim_dev)
+ {
+ struct s6e8ax0 *lcd = dev_get_drvdata(&dsim_dev->dev);
+
+@@ -843,7 +842,7 @@ static int s6e8ax0_suspend(struct mipi_dsim_lcd_device *dsim_dev)
+ return 0;
+ }
+
+-static int s6e8ax0_resume(struct mipi_dsim_lcd_device *dsim_dev)
++static int __maybe_unused s6e8ax0_resume(struct mipi_dsim_lcd_device *dsim_dev)
+ {
+ struct s6e8ax0 *lcd = dev_get_drvdata(&dsim_dev->dev);
+
+@@ -855,10 +854,6 @@ static int s6e8ax0_resume(struct mipi_dsim_lcd_device *dsim_dev)
+
+ return 0;
+ }
+-#else
+-#define s6e8ax0_suspend NULL
+-#define s6e8ax0_resume NULL
+-#endif
+
+ static struct mipi_dsim_lcd_driver s6e8ax0_dsim_ddi_driver = {
+ .name = "s6e8ax0",
+@@ -867,8 +862,8 @@ static struct mipi_dsim_lcd_driver s6e8ax0_dsim_ddi_driver = {
+ .power_on = s6e8ax0_power_on,
+ .set_sequence = s6e8ax0_set_sequence,
+ .probe = s6e8ax0_probe,
+- .suspend = s6e8ax0_suspend,
+- .resume = s6e8ax0_resume,
++ .suspend = IS_ENABLED(CONFIG_PM) ? s6e8ax0_suspend : NULL,
++ .resume = IS_ENABLED(CONFIG_PM) ? s6e8ax0_resume : NULL,
+ };
+
+ static int s6e8ax0_init(void)
+diff --git a/drivers/video/fbdev/intelfb/intelfbdrv.c b/drivers/video/fbdev/intelfb/intelfbdrv.c
+index b847d530471a..e8d1309ccefc 100644
+--- a/drivers/video/fbdev/intelfb/intelfbdrv.c
++++ b/drivers/video/fbdev/intelfb/intelfbdrv.c
+@@ -306,7 +306,7 @@ static __inline__ int get_opt_int(const char *this_opt, const char *name,
+ }
+
+ static __inline__ int get_opt_bool(const char *this_opt, const char *name,
+- int *ret)
++ bool *ret)
+ {
+ if (!ret)
+ return 0;
+diff --git a/drivers/video/fbdev/mmp/core.c b/drivers/video/fbdev/mmp/core.c
+index a0f496049db7..3a6bb6561ba0 100644
+--- a/drivers/video/fbdev/mmp/core.c
++++ b/drivers/video/fbdev/mmp/core.c
+@@ -23,6 +23,7 @@
+ #include <linux/slab.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/export.h>
++#include <linux/module.h>
+ #include <video/mmp_disp.h>
+
+ static struct mmp_overlay *path_get_overlay(struct mmp_path *path,
+@@ -249,3 +250,7 @@ void mmp_unregister_path(struct mmp_path *path)
+ mutex_unlock(&disp_lock);
+ }
+ EXPORT_SYMBOL_GPL(mmp_unregister_path);
++
++MODULE_AUTHOR("Zhou Zhu <zzhu3@marvell.com>");
++MODULE_DESCRIPTION("Marvell MMP display framework");
++MODULE_LICENSE("GPL");
+diff --git a/drivers/video/fbdev/sis/init301.c b/drivers/video/fbdev/sis/init301.c
+index 295e0dedaf1f..20f7234e809e 100644
+--- a/drivers/video/fbdev/sis/init301.c
++++ b/drivers/video/fbdev/sis/init301.c
+@@ -2151,17 +2151,15 @@ SiS_GetVCLK2Ptr(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned shor
+ unsigned short RefreshRateTableIndex)
+ {
+ unsigned short CRT2Index, VCLKIndex = 0, VCLKIndexGEN = 0, VCLKIndexGENCRT = 0;
+- unsigned short modeflag, resinfo, tempbx;
++ unsigned short resinfo, tempbx;
+ const unsigned char *CHTVVCLKPtr = NULL;
+
+ if(ModeNo <= 0x13) {
+- modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
+ resinfo = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ResInfo;
+ CRT2Index = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_CRT2CRTC;
+ VCLKIndexGEN = (SiS_GetRegByte((SiS_Pr->SiS_P3ca+0x02)) >> 2) & 0x03;
+ VCLKIndexGENCRT = VCLKIndexGEN;
+ } else {
+- modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
+ resinfo = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_RESINFO;
+ CRT2Index = SiS_Pr->SiS_RefIndex[RefreshRateTableIndex].Ext_CRT2CRTC;
+ VCLKIndexGEN = SiS_Pr->SiS_RefIndex[RefreshRateTableIndex].Ext_CRTVCLK;
+@@ -7270,7 +7268,7 @@ SiS_ShiftXPos(struct SiS_Private *SiS_Pr, int shift)
+ static void
+ SiS_SetGroup4_C_ELV(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
+ {
+- unsigned short temp, temp1, resinfo = 0;
++ unsigned short temp, temp1;
+ unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
+
+ if(!(SiS_Pr->SiS_VBType & VB_SIS30xCLV)) return;
+@@ -7282,10 +7280,6 @@ SiS_SetGroup4_C_ELV(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned
+ if(!(ROMAddr[0x61] & 0x04)) return;
+ }
+
+- if(ModeNo > 0x13) {
+- resinfo = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_RESINFO;
+- }
+-
+ SiS_SetRegOR(SiS_Pr->SiS_Part4Port,0x3a,0x08);
+ temp = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x3a);
+ if(!(temp & 0x01)) {
+diff --git a/drivers/video/fbdev/via/viafbdev.c b/drivers/video/fbdev/via/viafbdev.c
+index f9718f012aae..badee04ef496 100644
+--- a/drivers/video/fbdev/via/viafbdev.c
++++ b/drivers/video/fbdev/via/viafbdev.c
+@@ -1630,16 +1630,14 @@ static void viafb_init_proc(struct viafb_shared *shared)
+ }
+ static void viafb_remove_proc(struct viafb_shared *shared)
+ {
+- struct proc_dir_entry *viafb_entry = shared->proc_entry,
+- *iga1_entry = shared->iga1_proc_entry,
+- *iga2_entry = shared->iga2_proc_entry;
++ struct proc_dir_entry *viafb_entry = shared->proc_entry;
+
+ if (!viafb_entry)
+ return;
+
+- remove_proc_entry("output_devices", iga2_entry);
++ remove_proc_entry("output_devices", shared->iga2_proc_entry);
+ remove_proc_entry("iga2", viafb_entry);
+- remove_proc_entry("output_devices", iga1_entry);
++ remove_proc_entry("output_devices", shared->iga1_proc_entry);
+ remove_proc_entry("iga1", viafb_entry);
+ remove_proc_entry("supported_output_devices", viafb_entry);
+
+diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
+index 01d15dca940e..7cf26768ea0b 100644
+--- a/drivers/virtio/virtio_balloon.c
++++ b/drivers/virtio/virtio_balloon.c
+@@ -239,12 +239,14 @@ static void update_balloon_stats(struct virtio_balloon *vb)
+ all_vm_events(events);
+ si_meminfo(&i);
+
++#ifdef CONFIG_VM_EVENT_COUNTERS
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_SWAP_IN,
+ pages_to_bytes(events[PSWPIN]));
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_SWAP_OUT,
+ pages_to_bytes(events[PSWPOUT]));
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_MAJFLT, events[PGMAJFAULT]);
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_MINFLT, events[PGFAULT]);
++#endif
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMFREE,
+ pages_to_bytes(i.freeram));
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMTOT,
+diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
+index 7cd226da15fe..a4918b00308f 100644
+--- a/drivers/xen/Kconfig
++++ b/drivers/xen/Kconfig
+@@ -239,7 +239,7 @@ config XEN_ACPI_HOTPLUG_CPU
+
+ config XEN_ACPI_PROCESSOR
+ tristate "Xen ACPI processor"
+- depends on XEN && X86 && ACPI_PROCESSOR && CPU_FREQ
++ depends on XEN && XEN_DOM0 && X86 && ACPI_PROCESSOR && CPU_FREQ
+ default m
+ help
+ This ACPI processor uploads Power Management information to the Xen
+diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
+index 9dbe5b548fa6..0814dffa30c8 100644
+--- a/fs/btrfs/free-space-cache.c
++++ b/fs/btrfs/free-space-cache.c
+@@ -1260,7 +1260,7 @@ static int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode,
+ /* Lock all pages first so we can lock the extent safely. */
+ ret = io_ctl_prepare_pages(io_ctl, inode, 0);
+ if (ret)
+- goto out;
++ goto out_unlock;
+
+ lock_extent_bits(&BTRFS_I(inode)->io_tree, 0, i_size_read(inode) - 1,
+ 0, &cached_state);
+@@ -1353,6 +1353,7 @@ out_nospc_locked:
+ out_nospc:
+ cleanup_write_cache_enospc(inode, io_ctl, &cached_state, &bitmap_list);
+
++out_unlock:
+ if (block_group && (block_group->flags & BTRFS_BLOCK_GROUP_DATA))
+ up_write(&block_group->data_rwsem);
+
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index d14af5bd13d6..884e90e9622a 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -1282,8 +1282,11 @@ next_slot:
+ leaf = path->nodes[0];
+ if (path->slots[0] >= btrfs_header_nritems(leaf)) {
+ ret = btrfs_next_leaf(root, path);
+- if (ret < 0)
++ if (ret < 0) {
++ if (cow_start != (u64)-1)
++ cur_offset = cow_start;
+ goto error;
++ }
+ if (ret > 0)
+ break;
+ leaf = path->nodes[0];
+@@ -1999,7 +2002,15 @@ again:
+ goto out;
+ }
+
+- btrfs_set_extent_delalloc(inode, page_start, page_end, &cached_state);
++ ret = btrfs_set_extent_delalloc(inode, page_start, page_end,
++ &cached_state);
++ if (ret) {
++ mapping_set_error(page->mapping, ret);
++ end_extent_writepage(page, ret, page_start, page_end);
++ ClearPageChecked(page);
++ goto out;
++ }
++
+ ClearPageChecked(page);
+ set_page_dirty(page);
+ out:
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index 2b115c309e1c..b7f6b473cd16 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -2216,7 +2216,7 @@ static noinline int btrfs_search_path_in_tree(struct btrfs_fs_info *info,
+ if (!path)
+ return -ENOMEM;
+
+- ptr = &name[BTRFS_INO_LOOKUP_PATH_MAX];
++ ptr = &name[BTRFS_INO_LOOKUP_PATH_MAX - 1];
+
+ key.objectid = tree_id;
+ key.type = BTRFS_ROOT_ITEM_KEY;
+diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
+index 6ee954c62fe6..f355bd2d6ad8 100644
+--- a/fs/btrfs/tree-log.c
++++ b/fs/btrfs/tree-log.c
+@@ -26,6 +26,7 @@
+ #include "print-tree.h"
+ #include "backref.h"
+ #include "hash.h"
++#include "inode-map.h"
+
+ /* magic values for the inode_only field in btrfs_log_inode:
+ *
+@@ -2343,6 +2344,9 @@ static noinline int walk_down_log_tree(struct btrfs_trans_handle *trans,
+ next);
+ btrfs_wait_tree_block_writeback(next);
+ btrfs_tree_unlock(next);
++ } else {
++ if (test_and_clear_bit(EXTENT_BUFFER_DIRTY, &next->bflags))
++ clear_extent_buffer_dirty(next);
+ }
+
+ WARN_ON(root_owner !=
+@@ -2422,6 +2426,9 @@ static noinline int walk_up_log_tree(struct btrfs_trans_handle *trans,
+ next);
+ btrfs_wait_tree_block_writeback(next);
+ btrfs_tree_unlock(next);
++ } else {
++ if (test_and_clear_bit(EXTENT_BUFFER_DIRTY, &next->bflags))
++ clear_extent_buffer_dirty(next);
+ }
+
+ WARN_ON(root_owner != BTRFS_TREE_LOG_OBJECTID);
+@@ -2498,6 +2505,9 @@ static int walk_log_tree(struct btrfs_trans_handle *trans,
+ clean_tree_block(trans, log->fs_info, next);
+ btrfs_wait_tree_block_writeback(next);
+ btrfs_tree_unlock(next);
++ } else {
++ if (test_and_clear_bit(EXTENT_BUFFER_DIRTY, &next->bflags))
++ clear_extent_buffer_dirty(next);
+ }
+
+ WARN_ON(log->root_key.objectid !=
+@@ -5294,6 +5304,23 @@ again:
+ path);
+ }
+
++ if (!ret && wc.stage == LOG_WALK_REPLAY_ALL) {
++ struct btrfs_root *root = wc.replay_dest;
++
++ btrfs_release_path(path);
++
++ /*
++ * We have just replayed everything, and the highest
++ * objectid of fs roots probably has changed in case
++ * some inode_item's got replayed.
++ *
++ * root->objectid_mutex is not acquired as log replay
++ * could only happen during mount.
++ */
++ ret = btrfs_find_highest_objectid(root,
++ &root->highest_objectid);
++ }
++
+ key.offset = found_key.offset - 1;
+ wc.replay_dest->log_root = NULL;
+ free_extent_buffer(log->node);
+diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
+index 4acbc390a7d6..1d707a67f8ac 100644
+--- a/fs/cifs/cifsencrypt.c
++++ b/fs/cifs/cifsencrypt.c
+@@ -306,9 +306,8 @@ int calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt,
+ {
+ int i;
+ int rc;
+- char password_with_pad[CIFS_ENCPWD_SIZE];
++ char password_with_pad[CIFS_ENCPWD_SIZE] = {0};
+
+- memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
+ if (password)
+ strncpy(password_with_pad, password, CIFS_ENCPWD_SIZE);
+
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index a2c100aed4b0..d733df946cc6 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -1635,7 +1635,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
+ tmp_end++;
+ if (!(tmp_end < end && tmp_end[1] == delim)) {
+ /* No it is not. Set the password to NULL */
+- kfree(vol->password);
++ kzfree(vol->password);
+ vol->password = NULL;
+ break;
+ }
+@@ -1673,7 +1673,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
+ options = end;
+ }
+
+- kfree(vol->password);
++ kzfree(vol->password);
+ /* Now build new password string */
+ temp_len = strlen(value);
+ vol->password = kzalloc(temp_len+1, GFP_KERNEL);
+@@ -4038,7 +4038,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
+ reset_cifs_unix_caps(0, tcon, NULL, vol_info);
+ out:
+ kfree(vol_info->username);
+- kfree(vol_info->password);
++ kzfree(vol_info->password);
+ kfree(vol_info);
+
+ return tcon;
+diff --git a/fs/cifs/file.c b/fs/cifs/file.c
+index 47e04038a846..1366d2151389 100644
+--- a/fs/cifs/file.c
++++ b/fs/cifs/file.c
+@@ -3231,20 +3231,18 @@ static struct vm_operations_struct cifs_file_vm_ops = {
+
+ int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
+ {
+- int rc, xid;
++ int xid, rc = 0;
+ struct inode *inode = file_inode(file);
+
+ xid = get_xid();
+
+- if (!CIFS_CACHE_READ(CIFS_I(inode))) {
++ if (!CIFS_CACHE_READ(CIFS_I(inode)))
+ rc = cifs_zap_mapping(inode);
+- if (rc)
+- return rc;
+- }
+-
+- rc = generic_file_mmap(file, vma);
+- if (rc == 0)
++ if (!rc)
++ rc = generic_file_mmap(file, vma);
++ if (!rc)
+ vma->vm_ops = &cifs_file_vm_ops;
++
+ free_xid(xid);
+ return rc;
+ }
+@@ -3254,16 +3252,16 @@ int cifs_file_mmap(struct file *file, struct vm_area_struct *vma)
+ int rc, xid;
+
+ xid = get_xid();
++
+ rc = cifs_revalidate_file(file);
+- if (rc) {
++ if (rc)
+ cifs_dbg(FYI, "Validation prior to mmap failed, error=%d\n",
+ rc);
+- free_xid(xid);
+- return rc;
+- }
+- rc = generic_file_mmap(file, vma);
+- if (rc == 0)
++ if (!rc)
++ rc = generic_file_mmap(file, vma);
++ if (!rc)
+ vma->vm_ops = &cifs_file_vm_ops;
++
+ free_xid(xid);
+ return rc;
+ }
+diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
+index 8442b8b8e0be..a9b68cb38c12 100644
+--- a/fs/cifs/misc.c
++++ b/fs/cifs/misc.c
+@@ -99,14 +99,11 @@ sesInfoFree(struct cifs_ses *buf_to_free)
+ kfree(buf_to_free->serverOS);
+ kfree(buf_to_free->serverDomain);
+ kfree(buf_to_free->serverNOS);
+- if (buf_to_free->password) {
+- memset(buf_to_free->password, 0, strlen(buf_to_free->password));
+- kfree(buf_to_free->password);
+- }
++ kzfree(buf_to_free->password);
+ kfree(buf_to_free->user_name);
+ kfree(buf_to_free->domainName);
+- kfree(buf_to_free->auth_key.response);
+- kfree(buf_to_free);
++ kzfree(buf_to_free->auth_key.response);
++ kzfree(buf_to_free);
+ }
+
+ struct cifs_tcon *
+@@ -136,10 +133,7 @@ tconInfoFree(struct cifs_tcon *buf_to_free)
+ }
+ atomic_dec(&tconInfoAllocCount);
+ kfree(buf_to_free->nativeFileSystem);
+- if (buf_to_free->password) {
+- memset(buf_to_free->password, 0, strlen(buf_to_free->password));
+- kfree(buf_to_free->password);
+- }
++ kzfree(buf_to_free->password);
+ kfree(buf_to_free);
+ }
+
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 0cf4a76e8e94..69422157c71b 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -507,8 +507,7 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
+ }
+
+ /* check validate negotiate info response matches what we got earlier */
+- if (pneg_rsp->Dialect !=
+- cpu_to_le16(tcon->ses->server->vals->protocol_id))
++ if (pneg_rsp->Dialect != cpu_to_le16(tcon->ses->server->dialect))
+ goto vneg_out;
+
+ if (pneg_rsp->SecurityMode != cpu_to_le16(tcon->ses->server->sec_mode))
+diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
+index d6aeb84e90b6..d882d873c5a3 100644
+--- a/fs/ext2/acl.c
++++ b/fs/ext2/acl.c
+@@ -178,11 +178,8 @@ ext2_get_acl(struct inode *inode, int type)
+ return acl;
+ }
+
+-/*
+- * inode->i_mutex: down
+- */
+-int
+-ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
++static int
++__ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ {
+ int name_index;
+ void *value = NULL;
+@@ -192,13 +189,6 @@ ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ switch(type) {
+ case ACL_TYPE_ACCESS:
+ name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS;
+- if (acl) {
+- error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
+- if (error)
+- return error;
+- inode->i_ctime = CURRENT_TIME_SEC;
+- mark_inode_dirty(inode);
+- }
+ break;
+
+ case ACL_TYPE_DEFAULT:
+@@ -224,6 +214,24 @@ ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ return error;
+ }
+
++/*
++ * inode->i_mutex: down
++ */
++int
++ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
++{
++ int error;
++
++ if (type == ACL_TYPE_ACCESS && acl) {
++ error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (error)
++ return error;
++ inode->i_ctime = CURRENT_TIME_SEC;
++ mark_inode_dirty(inode);
++ }
++ return __ext2_set_acl(inode, acl, type);
++}
++
+ /*
+ * Initialize the ACLs of a new inode. Called from ext2_new_inode.
+ *
+@@ -241,12 +249,12 @@ ext2_init_acl(struct inode *inode, struct inode *dir)
+ return error;
+
+ if (default_acl) {
+- error = ext2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
++ error = __ext2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
+ posix_acl_release(default_acl);
+ }
+ if (acl) {
+ if (!error)
+- error = ext2_set_acl(inode, acl, ACL_TYPE_ACCESS);
++ error = __ext2_set_acl(inode, acl, ACL_TYPE_ACCESS);
+ posix_acl_release(acl);
+ }
+ return error;
+diff --git a/fs/ext4/crypto_fname.c b/fs/ext4/crypto_fname.c
+index fded02f72299..b7a39a185d01 100644
+--- a/fs/ext4/crypto_fname.c
++++ b/fs/ext4/crypto_fname.c
+@@ -346,8 +346,9 @@ struct ext4_fname_crypto_ctx *ext4_get_fname_crypto_ctx(
+ if (res == 0)
+ return NULL;
+
+- if (!ext4_has_encryption_key(inode))
+- ext4_generate_encryption_key(inode);
++ res = ext4_generate_encryption_key(inode);
++ if (res)
++ return ERR_PTR(res);
+
+ /* Get a crypto context based on the key.
+ * A new context is allocated if no context matches the requested key.
+diff --git a/fs/ext4/crypto_key.c b/fs/ext4/crypto_key.c
+index 52170d0b7c40..4f9818719d61 100644
+--- a/fs/ext4/crypto_key.c
++++ b/fs/ext4/crypto_key.c
+@@ -99,9 +99,17 @@ int ext4_generate_encryption_key(struct inode *inode)
+ struct ext4_encryption_context ctx;
+ struct user_key_payload *ukp;
+ struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+- int res = ext4_xattr_get(inode, EXT4_XATTR_INDEX_ENCRYPTION,
+- EXT4_XATTR_NAME_ENCRYPTION_CONTEXT,
+- &ctx, sizeof(ctx));
++ int res;
++
++ mutex_lock(&ei->i_encryption_lock);
++ if (ext4_has_encryption_key(inode)) {
++ mutex_unlock(&ei->i_encryption_lock);
++ return 0;
++ }
++
++ res = ext4_xattr_get(inode, EXT4_XATTR_INDEX_ENCRYPTION,
++ EXT4_XATTR_NAME_ENCRYPTION_CONTEXT,
++ &ctx, sizeof(ctx));
+
+ if (res != sizeof(ctx)) {
+ if (res > 0)
+@@ -154,6 +162,7 @@ out:
+ key_put(keyring_key);
+ if (res < 0)
+ crypt_key->mode = EXT4_ENCRYPTION_MODE_INVALID;
++ mutex_unlock(&ei->i_encryption_lock);
+ return res;
+ }
+
+diff --git a/fs/ext4/crypto_policy.c b/fs/ext4/crypto_policy.c
+index a6d6291aea16..591fc37dcd9e 100644
+--- a/fs/ext4/crypto_policy.c
++++ b/fs/ext4/crypto_policy.c
+@@ -85,6 +85,9 @@ static int ext4_create_encryption_context_from_policy(
+ int ext4_process_policy(const struct ext4_encryption_policy *policy,
+ struct inode *inode)
+ {
++ if (!inode_owner_or_capable(inode))
++ return -EACCES;
++
+ if (policy->version != 0)
+ return -EINVAL;
+
+diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
+index df67a6f8582a..01771ed4529d 100644
+--- a/fs/ext4/ext4.h
++++ b/fs/ext4/ext4.h
+@@ -989,6 +989,7 @@ struct ext4_inode_info {
+ #ifdef CONFIG_EXT4_FS_ENCRYPTION
+ /* Encryption params */
+ struct ext4_encryption_key i_encryption_key;
++ struct mutex i_encryption_lock;
+ #endif
+ };
+
+diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
+index 4196aa567784..dbe1ff511794 100644
+--- a/fs/ext4/ioctl.c
++++ b/fs/ext4/ioctl.c
+@@ -630,6 +630,9 @@ resizefs_out:
+ struct ext4_encryption_policy policy;
+ int err = 0;
+
++ if (!ext4_sb_has_crypto(sb))
++ return -EOPNOTSUPP;
++
+ if (copy_from_user(&policy,
+ (struct ext4_encryption_policy __user *)arg,
+ sizeof(policy))) {
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index b29a7ef4953e..c67056a8c901 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -669,6 +669,7 @@ __acquires(bitlock)
+ }
+
+ ext4_unlock_group(sb, grp);
++ ext4_commit_super(sb, 1);
+ ext4_handle_error(sb);
+ /*
+ * We only get here in the ERRORS_RO case; relocking the group
+@@ -948,6 +949,9 @@ static void init_once(void *foo)
+ init_rwsem(&ei->xattr_sem);
+ init_rwsem(&ei->i_data_sem);
+ init_rwsem(&ei->i_mmap_sem);
++#ifdef CONFIG_EXT4_FS_ENCRYPTION
++ mutex_init(&ei->i_encryption_lock);
++#endif
+ inode_init_once(&ei->vfs_inode);
+ }
+
+diff --git a/fs/fcntl.c b/fs/fcntl.c
+index 62376451bbce..5df914943d96 100644
+--- a/fs/fcntl.c
++++ b/fs/fcntl.c
+@@ -113,6 +113,10 @@ void f_setown(struct file *filp, unsigned long arg, int force)
+ int who = arg;
+ type = PIDTYPE_PID;
+ if (who < 0) {
++ /* avoid overflow below */
++ if (who == INT_MIN)
++ return;
++
+ type = PIDTYPE_PGID;
+ who = -who;
+ }
+diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
+index 9ff28bc294c0..5d084638e1f8 100644
+--- a/fs/kernfs/file.c
++++ b/fs/kernfs/file.c
+@@ -272,7 +272,7 @@ static ssize_t kernfs_fop_write(struct file *file, const char __user *user_buf,
+ {
+ struct kernfs_open_file *of = kernfs_of(file);
+ const struct kernfs_ops *ops;
+- size_t len;
++ ssize_t len;
+ char *buf;
+
+ if (of->atomic_write_len) {
+diff --git a/fs/locks.c b/fs/locks.c
+index 3c234b9fbdd9..af6fcf6e0dd0 100644
+--- a/fs/locks.c
++++ b/fs/locks.c
+@@ -2192,10 +2192,12 @@ int fcntl_setlk(unsigned int fd, struct file *filp, unsigned int cmd,
+ error = do_lock_file_wait(filp, cmd, file_lock);
+
+ /*
+- * Attempt to detect a close/fcntl race and recover by
+- * releasing the lock that was just acquired.
++ * Attempt to detect a close/fcntl race and recover by releasing the
++ * lock that was just acquired. There is no need to do that when we're
++ * unlocking though, or for OFD locks.
+ */
+- if (!error && file_lock->fl_type != F_UNLCK) {
++ if (!error && file_lock->fl_type != F_UNLCK &&
++ !(file_lock->fl_flags & FL_OFDLCK)) {
+ /*
+ * We need that spin_lock here - it prevents reordering between
+ * update of i_flctx->flc_posix and check for it done in
+@@ -2334,10 +2336,12 @@ int fcntl_setlk64(unsigned int fd, struct file *filp, unsigned int cmd,
+ error = do_lock_file_wait(filp, cmd, file_lock);
+
+ /*
+- * Attempt to detect a close/fcntl race and recover by
+- * releasing the lock that was just acquired.
++ * Attempt to detect a close/fcntl race and recover by releasing the
++ * lock that was just acquired. There is no need to do that when we're
++ * unlocking though, or for OFD locks.
+ */
+- if (!error && file_lock->fl_type != F_UNLCK) {
++ if (!error && file_lock->fl_type != F_UNLCK &&
++ !(file_lock->fl_flags & FL_OFDLCK)) {
+ /*
+ * We need that spin_lock here - it prevents reordering between
+ * update of i_flctx->flc_posix and check for it done in
+diff --git a/fs/namei.c b/fs/namei.c
+index c7a6eabc02a5..0d97235019a9 100644
+--- a/fs/namei.c
++++ b/fs/namei.c
+@@ -1894,6 +1894,9 @@ static int path_init(int dfd, const struct filename *name, unsigned int flags,
+ int retval = 0;
+ const char *s = name->name;
+
++ if (!*s)
++ flags &= ~LOOKUP_RCU;
++
+ nd->last_type = LAST_ROOT; /* if there are only slashes... */
+ nd->flags = flags | LOOKUP_JUMPED | LOOKUP_PARENT;
+ nd->depth = 0;
+diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
+index 0c2632386f35..d2c969d1d9d2 100644
+--- a/fs/ncpfs/dir.c
++++ b/fs/ncpfs/dir.c
+@@ -133,12 +133,11 @@ ncp_hash_dentry(const struct dentry *dentry, struct qstr *this)
+ return 0;
+
+ if (!ncp_case_sensitive(inode)) {
+- struct super_block *sb = dentry->d_sb;
+ struct nls_table *t;
+ unsigned long hash;
+ int i;
+
+- t = NCP_IO_TABLE(sb);
++ t = NCP_IO_TABLE(dentry->d_sb);
+ hash = init_name_hash();
+ for (i=0; i<this->len ; i++)
+ hash = partial_name_hash(ncp_tolower(t, this->name[i]),
+diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
+index 38678d9a5cc4..cb050d1e8146 100644
+--- a/fs/nfs/direct.c
++++ b/fs/nfs/direct.c
+@@ -784,10 +784,8 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
+
+ spin_lock(&dreq->lock);
+
+- if (test_bit(NFS_IOHDR_ERROR, &hdr->flags)) {
+- dreq->flags = 0;
++ if (test_bit(NFS_IOHDR_ERROR, &hdr->flags))
+ dreq->error = hdr->error;
+- }
+ if (dreq->error == 0) {
+ nfs_direct_good_bytes(dreq, hdr);
+ if (nfs_write_need_commit(hdr)) {
+diff --git a/fs/nfs/nfs4idmap.c b/fs/nfs/nfs4idmap.c
+index 2e1737c40a29..27c4970ed32f 100644
+--- a/fs/nfs/nfs4idmap.c
++++ b/fs/nfs/nfs4idmap.c
+@@ -582,9 +582,13 @@ static int nfs_idmap_legacy_upcall(struct key_construction *cons,
+ struct idmap_msg *im;
+ struct idmap *idmap = (struct idmap *)aux;
+ struct key *key = cons->key;
+- int ret = -ENOMEM;
++ int ret = -ENOKEY;
++
++ if (!aux)
++ goto out1;
+
+ /* msg and im are freed in idmap_pipe_destroy_msg */
++ ret = -ENOMEM;
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ goto out1;
+diff --git a/fs/nfs/write.c b/fs/nfs/write.c
+index 51af4fff890f..209b39ef69dd 100644
+--- a/fs/nfs/write.c
++++ b/fs/nfs/write.c
+@@ -1728,6 +1728,8 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
+ set_bit(NFS_CONTEXT_RESEND_WRITES, &req->wb_context->flags);
+ next:
+ nfs_unlock_and_release_request(req);
++ /* Latency breaker */
++ cond_resched();
+ }
+ nfss = NFS_SERVER(data->inode);
+ if (atomic_long_read(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)
+diff --git a/fs/nfs_common/grace.c b/fs/nfs_common/grace.c
+index ae6e58ea4de5..450954d5b7f6 100644
+--- a/fs/nfs_common/grace.c
++++ b/fs/nfs_common/grace.c
+@@ -85,7 +85,9 @@ grace_exit_net(struct net *net)
+ {
+ struct list_head *grace_list = net_generic(net, grace_net_id);
+
+- BUG_ON(!list_empty(grace_list));
++ WARN_ONCE(!list_empty(grace_list),
++ "net %x %s: grace_list is not empty\n",
++ net->ns.inum, __func__);
+ }
+
+ static struct pernet_operations grace_net_ops = {
+diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
+index 9d46a0bdd9f9..67eb154af881 100644
+--- a/fs/nfsd/auth.c
++++ b/fs/nfsd/auth.c
+@@ -59,7 +59,11 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
+ GROUP_AT(gi, i) = exp->ex_anon_gid;
+ else
+ GROUP_AT(gi, i) = GROUP_AT(rqgi, i);
++
+ }
++
++ /* Each thread allocates its own gi, no race */
++ groups_sort(gi);
+ } else {
+ gi = get_group_info(rqgi);
+ }
+diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
+index 529434f926f1..322cf41b5257 100644
+--- a/fs/nfsd/nfs4state.c
++++ b/fs/nfsd/nfs4state.c
+@@ -63,12 +63,16 @@ static const stateid_t zero_stateid = {
+ static const stateid_t currentstateid = {
+ .si_generation = 1,
+ };
++static const stateid_t close_stateid = {
++ .si_generation = 0xffffffffU,
++};
+
+ static u64 current_sessionid = 1;
+
+ #define ZERO_STATEID(stateid) (!memcmp((stateid), &zero_stateid, sizeof(stateid_t)))
+ #define ONE_STATEID(stateid) (!memcmp((stateid), &one_stateid, sizeof(stateid_t)))
+ #define CURRENT_STATEID(stateid) (!memcmp((stateid), ¤tstateid, sizeof(stateid_t)))
++#define CLOSE_STATEID(stateid) (!memcmp((stateid), &close_stateid, sizeof(stateid_t)))
+
+ /* forward declarations */
+ static bool check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner);
+@@ -4615,7 +4619,8 @@ static __be32 nfsd4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid)
+ struct nfs4_stid *s;
+ __be32 status = nfserr_bad_stateid;
+
+- if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
++ if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
++ CLOSE_STATEID(stateid))
+ return status;
+ /* Client debugging aid. */
+ if (!same_clid(&stateid->si_opaque.so_clid, &cl->cl_clientid)) {
+@@ -4673,7 +4678,8 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
+ else if (typemask & NFS4_DELEG_STID)
+ typemask |= NFS4_REVOKED_DELEG_STID;
+
+- if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
++ if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
++ CLOSE_STATEID(stateid))
+ return nfserr_bad_stateid;
+ status = lookup_clientid(&stateid->si_opaque.so_clid, cstate, nn);
+ if (status == nfserr_stale_clientid) {
+@@ -5107,6 +5113,11 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+
+ nfsd4_close_open_stateid(stp);
+
++ /* See RFC5661 sectionm 18.2.4 */
++ if (stp->st_stid.sc_client->cl_minorversion)
++ memcpy(&close->cl_stateid, &close_stateid,
++ sizeof(close->cl_stateid));
++
+ /* put reference from nfs4_preprocess_seqid_op */
+ nfs4_put_stid(&stp->st_stid);
+ out:
+diff --git a/fs/nsfs.c b/fs/nsfs.c
+index 99521e7c492b..845f29e15ac9 100644
+--- a/fs/nsfs.c
++++ b/fs/nsfs.c
+@@ -94,6 +94,7 @@ slow:
+ return ERR_PTR(-ENOMEM);
+ }
+ d_instantiate(dentry, inode);
++ dentry->d_flags |= DCACHE_RCUACCESS;
+ dentry->d_fsdata = (void *)ns_ops;
+ d = atomic_long_cmpxchg(&ns->stashed, 0, (unsigned long)dentry);
+ if (d) {
+diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
+index adcb1398c481..299a6e1d6b77 100644
+--- a/fs/overlayfs/readdir.c
++++ b/fs/overlayfs/readdir.c
+@@ -441,10 +441,14 @@ static int ovl_dir_fsync(struct file *file, loff_t start, loff_t end,
+ struct dentry *dentry = file->f_path.dentry;
+ struct file *realfile = od->realfile;
+
++ /* Nothing to sync for lower */
++ if (!OVL_TYPE_UPPER(ovl_path_type(dentry)))
++ return 0;
++
+ /*
+ * Need to check if we started out being a lower dir, but got copied up
+ */
+- if (!od->is_upper && OVL_TYPE_UPPER(ovl_path_type(dentry))) {
++ if (!od->is_upper) {
+ struct inode *inode = file_inode(file);
+
+ realfile = lockless_dereference(od->upperfile);
+diff --git a/fs/pipe.c b/fs/pipe.c
+index 5916c19dbb02..dbea65d88398 100644
+--- a/fs/pipe.c
++++ b/fs/pipe.c
+@@ -999,6 +999,9 @@ static long pipe_set_size(struct pipe_inode_info *pipe, unsigned long nr_pages)
+ {
+ struct pipe_buffer *bufs;
+
++ if (!nr_pages)
++ return -EINVAL;
++
+ /*
+ * We can shrink the pipe, if arg >= pipe->nrbufs. Since we don't
+ * expect a lot of shrink+grow operations, just free and allocate
+@@ -1043,13 +1046,19 @@ static long pipe_set_size(struct pipe_inode_info *pipe, unsigned long nr_pages)
+
+ /*
+ * Currently we rely on the pipe array holding a power-of-2 number
+- * of pages.
++ * of pages. Returns 0 on error.
+ */
+ static inline unsigned int round_pipe_size(unsigned int size)
+ {
+ unsigned long nr_pages;
+
++ if (size < pipe_min_size)
++ size = pipe_min_size;
++
+ nr_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
++ if (nr_pages == 0)
++ return 0;
++
+ return roundup_pow_of_two(nr_pages) << PAGE_SHIFT;
+ }
+
+@@ -1060,13 +1069,18 @@ static inline unsigned int round_pipe_size(unsigned int size)
+ int pipe_proc_fn(struct ctl_table *table, int write, void __user *buf,
+ size_t *lenp, loff_t *ppos)
+ {
++ unsigned int rounded_pipe_max_size;
+ int ret;
+
+ ret = proc_dointvec_minmax(table, write, buf, lenp, ppos);
+ if (ret < 0 || !write)
+ return ret;
+
+- pipe_max_size = round_pipe_size(pipe_max_size);
++ rounded_pipe_max_size = round_pipe_size(pipe_max_size);
++ if (rounded_pipe_max_size == 0)
++ return -EINVAL;
++
++ pipe_max_size = rounded_pipe_max_size;
+ return ret;
+ }
+
+diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
+index 19c777ad0084..4f3b028e3a1f 100644
+--- a/fs/quota/dquot.c
++++ b/fs/quota/dquot.c
+@@ -2881,7 +2881,8 @@ static int __init dquot_init(void)
+ pr_info("VFS: Dquot-cache hash table entries: %ld (order %ld,"
+ " %ld bytes)\n", nr_hash, order, (PAGE_SIZE << order));
+
+- register_shrinker(&dqcache_shrinker);
++ if (register_shrinker(&dqcache_shrinker))
++ panic("Cannot register dquot shrinker");
+
+ return 0;
+ }
+diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
+index dc198bc64c61..edc8ef78b63f 100644
+--- a/fs/reiserfs/bitmap.c
++++ b/fs/reiserfs/bitmap.c
+@@ -513,9 +513,17 @@ static void __discard_prealloc(struct reiserfs_transaction_handle *th,
+ "inode has negative prealloc blocks count.");
+ #endif
+ while (ei->i_prealloc_count > 0) {
+- reiserfs_free_prealloc_block(th, inode, ei->i_prealloc_block);
+- ei->i_prealloc_block++;
++ b_blocknr_t block_to_free;
++
++ /*
++ * reiserfs_free_prealloc_block can drop the write lock,
++ * which could allow another caller to free the same block.
++ * We can protect against it by modifying the prealloc
++ * state before calling it.
++ */
++ block_to_free = ei->i_prealloc_block++;
+ ei->i_prealloc_count--;
++ reiserfs_free_prealloc_block(th, inode, block_to_free);
+ dirty = 1;
+ }
+ if (dirty)
+@@ -1128,7 +1136,7 @@ static int determine_prealloc_size(reiserfs_blocknr_hint_t * hint)
+ hint->prealloc_size = 0;
+
+ if (!hint->formatted_node && hint->preallocate) {
+- if (S_ISREG(hint->inode->i_mode)
++ if (S_ISREG(hint->inode->i_mode) && !IS_PRIVATE(hint->inode)
+ && hint->inode->i_size >=
+ REISERFS_SB(hint->th->t_super)->s_alloc_options.
+ preallocmin * hint->inode->i_sb->s_blocksize)
+diff --git a/fs/reiserfs/lbalance.c b/fs/reiserfs/lbalance.c
+index 249594a821e0..f5cebd70d903 100644
+--- a/fs/reiserfs/lbalance.c
++++ b/fs/reiserfs/lbalance.c
+@@ -475,7 +475,7 @@ static void leaf_item_bottle(struct buffer_info *dest_bi,
+ * 'cpy_bytes'; create new item header;
+ * n_ih = new item_header;
+ */
+- memcpy(&n_ih, ih, SHORT_KEY_SIZE);
++ memcpy(&n_ih.ih_key, &ih->ih_key, KEY_SIZE);
+
+ /* Endian safe, both le */
+ n_ih.ih_version = ih->ih_version;
+diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h
+index 2adcde137c3f..5dcf3ab83886 100644
+--- a/fs/reiserfs/reiserfs.h
++++ b/fs/reiserfs/reiserfs.h
+@@ -1326,7 +1326,6 @@ struct cpu_key {
+ #define KEY_NOT_FOUND 0
+
+ #define KEY_SIZE (sizeof(struct reiserfs_key))
+-#define SHORT_KEY_SIZE (sizeof (__u32) + sizeof (__u32))
+
+ /* return values for search_by_key and clones */
+ #define ITEM_FOUND 1
+diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
+index 9b1824f35501..91b036902a17 100644
+--- a/fs/reiserfs/xattr_acl.c
++++ b/fs/reiserfs/xattr_acl.c
+@@ -37,7 +37,14 @@ reiserfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ error = journal_begin(&th, inode->i_sb, jcreate_blocks);
+ reiserfs_write_unlock(inode->i_sb);
+ if (error == 0) {
++ if (type == ACL_TYPE_ACCESS && acl) {
++ error = posix_acl_update_mode(inode, &inode->i_mode,
++ &acl);
++ if (error)
++ goto unlock;
++ }
+ error = __reiserfs_set_acl(&th, inode, type, acl);
++unlock:
+ reiserfs_write_lock(inode->i_sb);
+ error2 = journal_end(&th);
+ reiserfs_write_unlock(inode->i_sb);
+@@ -245,11 +252,6 @@ __reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode,
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ name = POSIX_ACL_XATTR_ACCESS;
+- if (acl) {
+- error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
+- if (error)
+- return error;
+- }
+ break;
+ case ACL_TYPE_DEFAULT:
+ name = POSIX_ACL_XATTR_DEFAULT;
+diff --git a/fs/select.c b/fs/select.c
+index f684c750e08a..f7e6fc7bf83c 100644
+--- a/fs/select.c
++++ b/fs/select.c
+@@ -29,6 +29,7 @@
+ #include <linux/sched/rt.h>
+ #include <linux/freezer.h>
+ #include <net/busy_poll.h>
++#include <linux/vmalloc.h>
+
+ #include <asm/uaccess.h>
+
+@@ -550,7 +551,7 @@ int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
+ fd_set_bits fds;
+ void *bits;
+ int ret, max_fds;
+- unsigned int size;
++ size_t size, alloc_size;
+ struct fdtable *fdt;
+ /* Allocate small arguments on the stack to save memory and be faster */
+ long stack_fds[SELECT_STACK_ALLOC/sizeof(long)];
+@@ -577,7 +578,14 @@ int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
+ if (size > sizeof(stack_fds) / 6) {
+ /* Not enough space in on-stack array; must use kmalloc */
+ ret = -ENOMEM;
+- bits = kmalloc(6 * size, GFP_KERNEL);
++ if (size > (SIZE_MAX / 6))
++ goto out_nofds;
++
++ alloc_size = 6 * size;
++ bits = kmalloc(alloc_size, GFP_KERNEL|__GFP_NOWARN);
++ if (!bits && alloc_size > PAGE_SIZE)
++ bits = vmalloc(alloc_size);
++
+ if (!bits)
+ goto out_nofds;
+ }
+@@ -614,7 +622,7 @@ int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
+
+ out:
+ if (bits != stack_fds)
+- kfree(bits);
++ kvfree(bits);
+ out_nofds:
+ return ret;
+ }
+diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
+index a56960dd1684..123ec87efac0 100644
+--- a/fs/xfs/xfs_aops.c
++++ b/fs/xfs/xfs_aops.c
+@@ -303,7 +303,7 @@ xfs_map_blocks(
+ (ip->i_df.if_flags & XFS_IFEXTENTS));
+ ASSERT(offset <= mp->m_super->s_maxbytes);
+
+- if (offset + count > mp->m_super->s_maxbytes)
++ if ((xfs_ufsize_t)offset + count > mp->m_super->s_maxbytes)
+ count = mp->m_super->s_maxbytes - offset;
+ end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count);
+ offset_fsb = XFS_B_TO_FSBT(mp, offset);
+@@ -1332,7 +1332,7 @@ xfs_map_trim_size(
+ if (mapping_size > size)
+ mapping_size = size;
+ if (offset < i_size_read(inode) &&
+- offset + mapping_size >= i_size_read(inode)) {
++ (xfs_ufsize_t)offset + mapping_size >= i_size_read(inode)) {
+ /* limit mapping to block that spans EOF */
+ mapping_size = roundup_64(i_size_read(inode) - offset,
+ 1 << inode->i_blkbits);
+@@ -1387,7 +1387,7 @@ __xfs_get_blocks(
+ }
+
+ ASSERT(offset <= mp->m_super->s_maxbytes);
+- if (offset + size > mp->m_super->s_maxbytes)
++ if ((xfs_ufsize_t)offset + size > mp->m_super->s_maxbytes)
+ size = mp->m_super->s_maxbytes - offset;
+ end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + size);
+ offset_fsb = XFS_B_TO_FSBT(mp, offset);
+diff --git a/include/asm-generic/asm-prototypes.h b/include/asm-generic/asm-prototypes.h
+new file mode 100644
+index 000000000000..df13637e4017
+--- /dev/null
++++ b/include/asm-generic/asm-prototypes.h
+@@ -0,0 +1,7 @@
++#include <linux/bitops.h>
++extern void *__memset(void *, int, __kernel_size_t);
++extern void *__memcpy(void *, const void *, __kernel_size_t);
++extern void *__memmove(void *, const void *, __kernel_size_t);
++extern void *memset(void *, int, __kernel_size_t);
++extern void *memcpy(void *, const void *, __kernel_size_t);
++extern void *memmove(void *, const void *, __kernel_size_t);
+diff --git a/include/asm-generic/export.h b/include/asm-generic/export.h
+new file mode 100644
+index 000000000000..43199a049da5
+--- /dev/null
++++ b/include/asm-generic/export.h
+@@ -0,0 +1,94 @@
++#ifndef __ASM_GENERIC_EXPORT_H
++#define __ASM_GENERIC_EXPORT_H
++
++#ifndef KSYM_FUNC
++#define KSYM_FUNC(x) x
++#endif
++#ifdef CONFIG_64BIT
++#define __put .quad
++#ifndef KSYM_ALIGN
++#define KSYM_ALIGN 8
++#endif
++#ifndef KCRC_ALIGN
++#define KCRC_ALIGN 8
++#endif
++#else
++#define __put .long
++#ifndef KSYM_ALIGN
++#define KSYM_ALIGN 4
++#endif
++#ifndef KCRC_ALIGN
++#define KCRC_ALIGN 4
++#endif
++#endif
++
++#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
++#define KSYM(name) _##name
++#else
++#define KSYM(name) name
++#endif
++
++/*
++ * note on .section use: @progbits vs %progbits nastiness doesn't matter,
++ * since we immediately emit into those sections anyway.
++ */
++.macro ___EXPORT_SYMBOL name,val,sec
++#ifdef CONFIG_MODULES
++ .globl KSYM(__ksymtab_\name)
++ .section ___ksymtab\sec+\name,"a"
++ .balign KSYM_ALIGN
++KSYM(__ksymtab_\name):
++ __put \val, KSYM(__kstrtab_\name)
++ .previous
++ .section __ksymtab_strings,"a"
++KSYM(__kstrtab_\name):
++#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
++ .asciz "_\name"
++#else
++ .asciz "\name"
++#endif
++ .previous
++#ifdef CONFIG_MODVERSIONS
++ .section ___kcrctab\sec+\name,"a"
++ .balign KCRC_ALIGN
++KSYM(__kcrctab_\name):
++ __put KSYM(__crc_\name)
++ .weak KSYM(__crc_\name)
++ .previous
++#endif
++#endif
++.endm
++#undef __put
++
++#if defined(__KSYM_DEPS__)
++
++#define __EXPORT_SYMBOL(sym, val, sec) === __KSYM_##sym ===
++
++#elif defined(CONFIG_TRIM_UNUSED_KSYMS)
++
++#include <linux/kconfig.h>
++#include <generated/autoksyms.h>
++
++#define __EXPORT_SYMBOL(sym, val, sec) \
++ __cond_export_sym(sym, val, sec, config_enabled(__KSYM_##sym))
++#define __cond_export_sym(sym, val, sec, conf) \
++ ___cond_export_sym(sym, val, sec, conf)
++#define ___cond_export_sym(sym, val, sec, enabled) \
++ __cond_export_sym_##enabled(sym, val, sec)
++#define __cond_export_sym_1(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec
++#define __cond_export_sym_0(sym, val, sec) /* nothing */
++
++#else
++#define __EXPORT_SYMBOL(sym, val, sec) ___EXPORT_SYMBOL sym, val, sec
++#endif
++
++#define EXPORT_SYMBOL(name) \
++ __EXPORT_SYMBOL(name, KSYM_FUNC(KSYM(name)),)
++#define EXPORT_SYMBOL_GPL(name) \
++ __EXPORT_SYMBOL(name, KSYM_FUNC(KSYM(name)), _gpl)
++#define EXPORT_DATA_SYMBOL(name) \
++ __EXPORT_SYMBOL(name, KSYM(name),)
++#define EXPORT_DATA_SYMBOL_GPL(name) \
++ __EXPORT_SYMBOL(name, KSYM(name),_gpl)
++
++#endif
+diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
+index 9779c35f8454..dab9569f22bf 100644
+--- a/include/crypto/internal/hash.h
++++ b/include/crypto/internal/hash.h
+@@ -91,6 +91,8 @@ static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
+ return alg->setkey != shash_no_setkey;
+ }
+
++bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);
++
+ int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
+ struct hash_alg_common *alg,
+ struct crypto_instance *inst);
+diff --git a/include/crypto/mcryptd.h b/include/crypto/mcryptd.h
+index c23ee1f7ee80..c2ff077168d3 100644
+--- a/include/crypto/mcryptd.h
++++ b/include/crypto/mcryptd.h
+@@ -26,6 +26,7 @@ static inline struct mcryptd_ahash *__mcryptd_ahash_cast(
+
+ struct mcryptd_cpu_queue {
+ struct crypto_queue queue;
++ spinlock_t q_lock;
+ struct work_struct work;
+ };
+
+diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h
+index 3daf5ed392c9..4b97ae264388 100644
+--- a/include/linux/cacheinfo.h
++++ b/include/linux/cacheinfo.h
+@@ -71,6 +71,7 @@ struct cpu_cacheinfo {
+ struct cacheinfo *info_list;
+ unsigned int num_levels;
+ unsigned int num_leaves;
++ bool cpu_map_populated;
+ };
+
+ /*
+diff --git a/include/linux/cred.h b/include/linux/cred.h
+index 8b6c083e68a7..536d873ad6e5 100644
+--- a/include/linux/cred.h
++++ b/include/linux/cred.h
+@@ -87,6 +87,7 @@ extern int set_current_groups(struct group_info *);
+ extern void set_groups(struct cred *, struct group_info *);
+ extern int groups_search(const struct group_info *, kgid_t);
+ extern bool may_setgroups(void);
++extern void groups_sort(struct group_info *);
+
+ /* access the groups "array" with this macro */
+ #define GROUP_AT(gi, i) \
+diff --git a/include/linux/device.h b/include/linux/device.h
+index 98a1d9748eec..84a1c7e49c51 100644
+--- a/include/linux/device.h
++++ b/include/linux/device.h
+@@ -1208,8 +1208,11 @@ do { \
+ dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \
+ } while (0)
+ #else
+-#define dev_dbg_ratelimited(dev, fmt, ...) \
+- no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
++#define dev_dbg_ratelimited(dev, fmt, ...) \
++do { \
++ if (0) \
++ dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \
++} while (0)
+ #endif
+
+ #ifdef VERBOSE_DEBUG
+diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
+index 230f87bdf5ad..2c084871e833 100644
+--- a/include/linux/fdtable.h
++++ b/include/linux/fdtable.h
+@@ -9,6 +9,7 @@
+ #include <linux/compiler.h>
+ #include <linux/spinlock.h>
+ #include <linux/rcupdate.h>
++#include <linux/nospec.h>
+ #include <linux/types.h>
+ #include <linux/init.h>
+ #include <linux/fs.h>
+@@ -76,8 +77,10 @@ static inline struct file *__fcheck_files(struct files_struct *files, unsigned i
+ {
+ struct fdtable *fdt = rcu_dereference_raw(files->fdt);
+
+- if (fd < fdt->max_fds)
++ if (fd < fdt->max_fds) {
++ fd = array_index_nospec(fd, fdt->max_fds);
+ return rcu_dereference_raw(fdt->fd[fd]);
++ }
+ return NULL;
+ }
+
+diff --git a/include/linux/fscache.h b/include/linux/fscache.h
+index 115bb81912cc..94a8aae8f9e2 100644
+--- a/include/linux/fscache.h
++++ b/include/linux/fscache.h
+@@ -764,7 +764,7 @@ bool fscache_maybe_release_page(struct fscache_cookie *cookie,
+ {
+ if (fscache_cookie_valid(cookie) && PageFsCache(page))
+ return __fscache_maybe_release_page(cookie, page, gfp);
+- return false;
++ return true;
+ }
+
+ /**
+diff --git a/include/linux/init.h b/include/linux/init.h
+index 21b6d768edd7..5f4d931095ce 100644
+--- a/include/linux/init.h
++++ b/include/linux/init.h
+@@ -4,6 +4,13 @@
+ #include <linux/compiler.h>
+ #include <linux/types.h>
+
++/* Built-in __init functions needn't be compiled with retpoline */
++#if defined(RETPOLINE) && !defined(MODULE)
++#define __noretpoline __attribute__((indirect_branch("keep")))
++#else
++#define __noretpoline
++#endif
++
+ /* These macros are used to mark some functions or
+ * initialized data (doesn't apply to uninitialized data)
+ * as `initialization' functions. The kernel can take this
+@@ -39,7 +46,7 @@
+
+ /* These are for everybody (although not all archs will actually
+ discard it in modules) */
+-#define __init __section(.init.text) __cold notrace
++#define __init __section(.init.text) __cold notrace __noretpoline
+ #define __initdata __section(.init.data)
+ #define __initconst __constsection(.init.rodata)
+ #define __exitdata __section(.exit.data)
+diff --git a/include/linux/kconfig.h b/include/linux/kconfig.h
+index b33c7797eb57..a94b5bf57f51 100644
+--- a/include/linux/kconfig.h
++++ b/include/linux/kconfig.h
+@@ -17,10 +17,11 @@
+ * the last step cherry picks the 2nd arg, we get a zero.
+ */
+ #define __ARG_PLACEHOLDER_1 0,
+-#define config_enabled(cfg) _config_enabled(cfg)
+-#define _config_enabled(value) __config_enabled(__ARG_PLACEHOLDER_##value)
+-#define __config_enabled(arg1_or_junk) ___config_enabled(arg1_or_junk 1, 0)
+-#define ___config_enabled(__ignored, val, ...) val
++#define config_enabled(cfg) ___is_defined(cfg)
++#define __is_defined(x) ___is_defined(x)
++#define ___is_defined(val) ____is_defined(__ARG_PLACEHOLDER_##val)
++#define ____is_defined(arg1_or_junk) __take_second_arg(arg1_or_junk 1, 0)
++#define __take_second_arg(__ignored, val, ...) val
+
+ /*
+ * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0
+@@ -42,7 +43,7 @@
+ * built-in code when CONFIG_FOO is set to 'm'.
+ */
+ #define IS_REACHABLE(option) (config_enabled(option) || \
+- (config_enabled(option##_MODULE) && config_enabled(MODULE)))
++ (config_enabled(option##_MODULE) && __is_defined(MODULE)))
+
+ /*
+ * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',
+diff --git a/include/linux/ktime.h b/include/linux/ktime.h
+index 2b6a204bd8d4..3ffc69ebe967 100644
+--- a/include/linux/ktime.h
++++ b/include/linux/ktime.h
+@@ -63,6 +63,13 @@ static inline ktime_t ktime_set(const s64 secs, const unsigned long nsecs)
+ #define ktime_add(lhs, rhs) \
+ ({ (ktime_t){ .tv64 = (lhs).tv64 + (rhs).tv64 }; })
+
++/*
++ * Same as ktime_add(), but avoids undefined behaviour on overflow; however,
++ * this means that you must check the result for overflow yourself.
++ */
++#define ktime_add_unsafe(lhs, rhs) \
++ ({ (ktime_t){ .tv64 = (u64) (lhs).tv64 + (rhs).tv64 }; })
++
+ /*
+ * Add a ktime_t variable and a scalar nanosecond value.
+ * res = kt + nsval:
+diff --git a/include/linux/mmu_context.h b/include/linux/mmu_context.h
+index 70fffeba7495..a4441784503b 100644
+--- a/include/linux/mmu_context.h
++++ b/include/linux/mmu_context.h
+@@ -1,9 +1,16 @@
+ #ifndef _LINUX_MMU_CONTEXT_H
+ #define _LINUX_MMU_CONTEXT_H
+
++#include <asm/mmu_context.h>
++
+ struct mm_struct;
+
+ void use_mm(struct mm_struct *mm);
+ void unuse_mm(struct mm_struct *mm);
+
++/* Architectures that care about IRQ state in switch_mm can override this. */
++#ifndef switch_mm_irqs_off
++# define switch_mm_irqs_off switch_mm
++#endif
++
+ #endif
+diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
+index dfff2baf836b..0deabc012551 100644
+--- a/include/linux/mtd/map.h
++++ b/include/linux/mtd/map.h
+@@ -265,75 +265,67 @@ void map_destroy(struct mtd_info *mtd);
+ #define INVALIDATE_CACHED_RANGE(map, from, size) \
+ do { if (map->inval_cache) map->inval_cache(map, from, size); } while (0)
+
+-
+-static inline int map_word_equal(struct map_info *map, map_word val1, map_word val2)
+-{
+- int i;
+-
+- for (i = 0; i < map_words(map); i++) {
+- if (val1.x[i] != val2.x[i])
+- return 0;
+- }
+-
+- return 1;
+-}
+-
+-static inline map_word map_word_and(struct map_info *map, map_word val1, map_word val2)
+-{
+- map_word r;
+- int i;
+-
+- for (i = 0; i < map_words(map); i++)
+- r.x[i] = val1.x[i] & val2.x[i];
+-
+- return r;
+-}
+-
+-static inline map_word map_word_clr(struct map_info *map, map_word val1, map_word val2)
+-{
+- map_word r;
+- int i;
+-
+- for (i = 0; i < map_words(map); i++)
+- r.x[i] = val1.x[i] & ~val2.x[i];
+-
+- return r;
+-}
+-
+-static inline map_word map_word_or(struct map_info *map, map_word val1, map_word val2)
+-{
+- map_word r;
+- int i;
+-
+- for (i = 0; i < map_words(map); i++)
+- r.x[i] = val1.x[i] | val2.x[i];
+-
+- return r;
+-}
+-
+-static inline int map_word_andequal(struct map_info *map, map_word val1, map_word val2, map_word val3)
+-{
+- int i;
+-
+- for (i = 0; i < map_words(map); i++) {
+- if ((val1.x[i] & val2.x[i]) != val3.x[i])
+- return 0;
+- }
+-
+- return 1;
+-}
+-
+-static inline int map_word_bitsset(struct map_info *map, map_word val1, map_word val2)
+-{
+- int i;
+-
+- for (i = 0; i < map_words(map); i++) {
+- if (val1.x[i] & val2.x[i])
+- return 1;
+- }
+-
+- return 0;
+-}
++#define map_word_equal(map, val1, val2) \
++({ \
++ int i, ret = 1; \
++ for (i = 0; i < map_words(map); i++) \
++ if ((val1).x[i] != (val2).x[i]) { \
++ ret = 0; \
++ break; \
++ } \
++ ret; \
++})
++
++#define map_word_and(map, val1, val2) \
++({ \
++ map_word r; \
++ int i; \
++ for (i = 0; i < map_words(map); i++) \
++ r.x[i] = (val1).x[i] & (val2).x[i]; \
++ r; \
++})
++
++#define map_word_clr(map, val1, val2) \
++({ \
++ map_word r; \
++ int i; \
++ for (i = 0; i < map_words(map); i++) \
++ r.x[i] = (val1).x[i] & ~(val2).x[i]; \
++ r; \
++})
++
++#define map_word_or(map, val1, val2) \
++({ \
++ map_word r; \
++ int i; \
++ for (i = 0; i < map_words(map); i++) \
++ r.x[i] = (val1).x[i] | (val2).x[i]; \
++ r; \
++})
++
++#define map_word_andequal(map, val1, val2, val3) \
++({ \
++ int i, ret = 1; \
++ for (i = 0; i < map_words(map); i++) { \
++ if (((val1).x[i] & (val2).x[i]) != (val2).x[i]) { \
++ ret = 0; \
++ break; \
++ } \
++ } \
++ ret; \
++})
++
++#define map_word_bitsset(map, val1, val2) \
++({ \
++ int i, ret = 0; \
++ for (i = 0; i < map_words(map); i++) { \
++ if ((val1).x[i] & (val2).x[i]) { \
++ ret = 1; \
++ break; \
++ } \
++ } \
++ ret; \
++})
+
+ static inline map_word map_word_load(struct map_info *map, const void *ptr)
+ {
+diff --git a/include/linux/mtd/sh_flctl.h b/include/linux/mtd/sh_flctl.h
+index 1c28f8879b1c..067b37aff4a1 100644
+--- a/include/linux/mtd/sh_flctl.h
++++ b/include/linux/mtd/sh_flctl.h
+@@ -148,6 +148,7 @@ struct sh_flctl {
+ struct platform_device *pdev;
+ struct dev_pm_qos_request pm_qos;
+ void __iomem *reg;
++ resource_size_t fifo;
+
+ uint8_t done_buff[2048 + 64]; /* max size 2048 + 64 */
+ int read_bytes;
+diff --git a/include/linux/nospec.h b/include/linux/nospec.h
+new file mode 100644
+index 000000000000..b99bced39ac2
+--- /dev/null
++++ b/include/linux/nospec.h
+@@ -0,0 +1,72 @@
++// SPDX-License-Identifier: GPL-2.0
++// Copyright(c) 2018 Linus Torvalds. All rights reserved.
++// Copyright(c) 2018 Alexei Starovoitov. All rights reserved.
++// Copyright(c) 2018 Intel Corporation. All rights reserved.
++
++#ifndef _LINUX_NOSPEC_H
++#define _LINUX_NOSPEC_H
++
++/**
++ * array_index_mask_nospec() - generate a ~0 mask when index < size, 0 otherwise
++ * @index: array element index
++ * @size: number of elements in array
++ *
++ * When @index is out of bounds (@index >= @size), the sign bit will be
++ * set. Extend the sign bit to all bits and invert, giving a result of
++ * zero for an out of bounds index, or ~0 if within bounds [0, @size).
++ */
++#ifndef array_index_mask_nospec
++static inline unsigned long array_index_mask_nospec(unsigned long index,
++ unsigned long size)
++{
++ /*
++ * Warn developers about inappropriate array_index_nospec() usage.
++ *
++ * Even if the CPU speculates past the WARN_ONCE branch, the
++ * sign bit of @index is taken into account when generating the
++ * mask.
++ *
++ * This warning is compiled out when the compiler can infer that
++ * @index and @size are less than LONG_MAX.
++ */
++ if (WARN_ONCE(index > LONG_MAX || size > LONG_MAX,
++ "array_index_nospec() limited to range of [0, LONG_MAX]\n"))
++ return 0;
++
++ /*
++ * Always calculate and emit the mask even if the compiler
++ * thinks the mask is not needed. The compiler does not take
++ * into account the value of @index under speculation.
++ */
++ OPTIMIZER_HIDE_VAR(index);
++ return ~(long)(index | (size - 1UL - index)) >> (BITS_PER_LONG - 1);
++}
++#endif
++
++/*
++ * array_index_nospec - sanitize an array index after a bounds check
++ *
++ * For a code sequence like:
++ *
++ * if (index < size) {
++ * index = array_index_nospec(index, size);
++ * val = array[index];
++ * }
++ *
++ * ...if the CPU speculates past the bounds check then
++ * array_index_nospec() will clamp the index within the range of [0,
++ * size).
++ */
++#define array_index_nospec(index, size) \
++({ \
++ typeof(index) _i = (index); \
++ typeof(size) _s = (size); \
++ unsigned long _mask = array_index_mask_nospec(_i, _s); \
++ \
++ BUILD_BUG_ON(sizeof(_i) > sizeof(long)); \
++ BUILD_BUG_ON(sizeof(_s) > sizeof(long)); \
++ \
++ _i &= _mask; \
++ _i; \
++})
++#endif /* _LINUX_NOSPEC_H */
+diff --git a/include/linux/sh_eth.h b/include/linux/sh_eth.h
+index 8c9131db2b25..b050ef51e27e 100644
+--- a/include/linux/sh_eth.h
++++ b/include/linux/sh_eth.h
+@@ -16,7 +16,6 @@ struct sh_eth_plat_data {
+ unsigned char mac_addr[ETH_ALEN];
+ unsigned no_ether_link:1;
+ unsigned ether_link_active_low:1;
+- unsigned needs_init:1;
+ };
+
+ #endif
+diff --git a/include/linux/string.h b/include/linux/string.h
+index e40099e585c9..f8902cc0c10d 100644
+--- a/include/linux/string.h
++++ b/include/linux/string.h
+@@ -118,6 +118,7 @@ extern char *kstrdup(const char *s, gfp_t gfp);
+ extern const char *kstrdup_const(const char *s, gfp_t gfp);
+ extern char *kstrndup(const char *s, size_t len, gfp_t gfp);
+ extern void *kmemdup(const void *src, size_t len, gfp_t gfp);
++extern char *kmemdup_nul(const char *s, size_t len, gfp_t gfp);
+
+ extern char **argv_split(gfp_t gfp, const char *str, int *argcp);
+ extern void argv_free(char **argv);
+diff --git a/include/linux/tcp.h b/include/linux/tcp.h
+index e8bbf403618f..5eeeca0b25f1 100644
+--- a/include/linux/tcp.h
++++ b/include/linux/tcp.h
+@@ -29,9 +29,14 @@ static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb)
+ return (struct tcphdr *)skb_transport_header(skb);
+ }
+
++static inline unsigned int __tcp_hdrlen(const struct tcphdr *th)
++{
++ return th->doff * 4;
++}
++
+ static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)
+ {
+- return tcp_hdr(skb)->doff * 4;
++ return __tcp_hdrlen(tcp_hdr(skb));
+ }
+
+ static inline struct tcphdr *inner_tcp_hdr(const struct sk_buff *skb)
+diff --git a/include/net/arp.h b/include/net/arp.h
+index 5e0f891d476c..1b3f86981757 100644
+--- a/include/net/arp.h
++++ b/include/net/arp.h
+@@ -19,6 +19,9 @@ static inline u32 arp_hashfn(const void *pkey, const struct net_device *dev, u32
+
+ static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key)
+ {
++ if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT))
++ key = INADDR_ANY;
++
+ return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev);
+ }
+
+diff --git a/include/net/ip.h b/include/net/ip.h
+index 117bde93995d..80b849cadc35 100644
+--- a/include/net/ip.h
++++ b/include/net/ip.h
+@@ -33,6 +33,8 @@
+ #include <net/flow.h>
+ #include <net/flow_keys.h>
+
++#define IPV4_MIN_MTU 68 /* RFC 791 */
++
+ struct sock;
+
+ struct inet_skb_parm {
+diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
+index f733656404de..01af6cd44c67 100644
+--- a/include/net/net_namespace.h
++++ b/include/net/net_namespace.h
+@@ -203,6 +203,11 @@ int net_eq(const struct net *net1, const struct net *net2)
+ return net1 == net2;
+ }
+
++static inline int check_net(const struct net *net)
++{
++ return atomic_read(&net->count) != 0;
++}
++
+ void net_drop_ns(void *);
+
+ #else
+@@ -227,6 +232,11 @@ int net_eq(const struct net *net1, const struct net *net2)
+ return 1;
+ }
+
++static inline int check_net(const struct net *net)
++{
++ return 1;
++}
++
+ #define net_drop_ns NULL
+ #endif
+
+diff --git a/include/net/netlink.h b/include/net/netlink.h
+index 2a5dbcc90d1c..9bb53469b704 100644
+--- a/include/net/netlink.h
++++ b/include/net/netlink.h
+@@ -745,7 +745,10 @@ static inline int nla_parse_nested(struct nlattr *tb[], int maxtype,
+ */
+ static inline int nla_put_u8(struct sk_buff *skb, int attrtype, u8 value)
+ {
+- return nla_put(skb, attrtype, sizeof(u8), &value);
++ /* temporary variables to work around GCC PR81715 with asan-stack=1 */
++ u8 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(u8), &tmp);
+ }
+
+ /**
+@@ -756,7 +759,9 @@ static inline int nla_put_u8(struct sk_buff *skb, int attrtype, u8 value)
+ */
+ static inline int nla_put_u16(struct sk_buff *skb, int attrtype, u16 value)
+ {
+- return nla_put(skb, attrtype, sizeof(u16), &value);
++ u16 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(u16), &tmp);
+ }
+
+ /**
+@@ -767,7 +772,9 @@ static inline int nla_put_u16(struct sk_buff *skb, int attrtype, u16 value)
+ */
+ static inline int nla_put_be16(struct sk_buff *skb, int attrtype, __be16 value)
+ {
+- return nla_put(skb, attrtype, sizeof(__be16), &value);
++ __be16 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(__be16), &tmp);
+ }
+
+ /**
+@@ -778,7 +785,9 @@ static inline int nla_put_be16(struct sk_buff *skb, int attrtype, __be16 value)
+ */
+ static inline int nla_put_net16(struct sk_buff *skb, int attrtype, __be16 value)
+ {
+- return nla_put_be16(skb, attrtype | NLA_F_NET_BYTEORDER, value);
++ __be16 tmp = value;
++
++ return nla_put_be16(skb, attrtype | NLA_F_NET_BYTEORDER, tmp);
+ }
+
+ /**
+@@ -789,7 +798,9 @@ static inline int nla_put_net16(struct sk_buff *skb, int attrtype, __be16 value)
+ */
+ static inline int nla_put_le16(struct sk_buff *skb, int attrtype, __le16 value)
+ {
+- return nla_put(skb, attrtype, sizeof(__le16), &value);
++ __le16 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(__le16), &tmp);
+ }
+
+ /**
+@@ -800,7 +811,9 @@ static inline int nla_put_le16(struct sk_buff *skb, int attrtype, __le16 value)
+ */
+ static inline int nla_put_u32(struct sk_buff *skb, int attrtype, u32 value)
+ {
+- return nla_put(skb, attrtype, sizeof(u32), &value);
++ u32 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(u32), &tmp);
+ }
+
+ /**
+@@ -811,7 +824,9 @@ static inline int nla_put_u32(struct sk_buff *skb, int attrtype, u32 value)
+ */
+ static inline int nla_put_be32(struct sk_buff *skb, int attrtype, __be32 value)
+ {
+- return nla_put(skb, attrtype, sizeof(__be32), &value);
++ __be32 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(__be32), &tmp);
+ }
+
+ /**
+@@ -822,7 +837,9 @@ static inline int nla_put_be32(struct sk_buff *skb, int attrtype, __be32 value)
+ */
+ static inline int nla_put_net32(struct sk_buff *skb, int attrtype, __be32 value)
+ {
+- return nla_put_be32(skb, attrtype | NLA_F_NET_BYTEORDER, value);
++ __be32 tmp = value;
++
++ return nla_put_be32(skb, attrtype | NLA_F_NET_BYTEORDER, tmp);
+ }
+
+ /**
+@@ -833,7 +850,9 @@ static inline int nla_put_net32(struct sk_buff *skb, int attrtype, __be32 value)
+ */
+ static inline int nla_put_le32(struct sk_buff *skb, int attrtype, __le32 value)
+ {
+- return nla_put(skb, attrtype, sizeof(__le32), &value);
++ __le32 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(__le32), &tmp);
+ }
+
+ /**
+@@ -844,7 +863,9 @@ static inline int nla_put_le32(struct sk_buff *skb, int attrtype, __le32 value)
+ */
+ static inline int nla_put_u64(struct sk_buff *skb, int attrtype, u64 value)
+ {
+- return nla_put(skb, attrtype, sizeof(u64), &value);
++ u64 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(u64), &tmp);
+ }
+
+ /**
+@@ -855,7 +876,9 @@ static inline int nla_put_u64(struct sk_buff *skb, int attrtype, u64 value)
+ */
+ static inline int nla_put_be64(struct sk_buff *skb, int attrtype, __be64 value)
+ {
+- return nla_put(skb, attrtype, sizeof(__be64), &value);
++ __be64 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(__be64), &tmp);
+ }
+
+ /**
+@@ -866,7 +889,9 @@ static inline int nla_put_be64(struct sk_buff *skb, int attrtype, __be64 value)
+ */
+ static inline int nla_put_net64(struct sk_buff *skb, int attrtype, __be64 value)
+ {
+- return nla_put_be64(skb, attrtype | NLA_F_NET_BYTEORDER, value);
++ __be64 tmp = value;
++
++ return nla_put_be64(skb, attrtype | NLA_F_NET_BYTEORDER, tmp);
+ }
+
+ /**
+@@ -877,7 +902,9 @@ static inline int nla_put_net64(struct sk_buff *skb, int attrtype, __be64 value)
+ */
+ static inline int nla_put_le64(struct sk_buff *skb, int attrtype, __le64 value)
+ {
+- return nla_put(skb, attrtype, sizeof(__le64), &value);
++ __le64 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(__le64), &tmp);
+ }
+
+ /**
+@@ -888,7 +915,9 @@ static inline int nla_put_le64(struct sk_buff *skb, int attrtype, __le64 value)
+ */
+ static inline int nla_put_s8(struct sk_buff *skb, int attrtype, s8 value)
+ {
+- return nla_put(skb, attrtype, sizeof(s8), &value);
++ s8 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(s8), &tmp);
+ }
+
+ /**
+@@ -899,7 +928,9 @@ static inline int nla_put_s8(struct sk_buff *skb, int attrtype, s8 value)
+ */
+ static inline int nla_put_s16(struct sk_buff *skb, int attrtype, s16 value)
+ {
+- return nla_put(skb, attrtype, sizeof(s16), &value);
++ s16 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(s16), &tmp);
+ }
+
+ /**
+@@ -910,7 +941,9 @@ static inline int nla_put_s16(struct sk_buff *skb, int attrtype, s16 value)
+ */
+ static inline int nla_put_s32(struct sk_buff *skb, int attrtype, s32 value)
+ {
+- return nla_put(skb, attrtype, sizeof(s32), &value);
++ s32 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(s32), &tmp);
+ }
+
+ /**
+@@ -921,7 +954,9 @@ static inline int nla_put_s32(struct sk_buff *skb, int attrtype, s32 value)
+ */
+ static inline int nla_put_s64(struct sk_buff *skb, int attrtype, s64 value)
+ {
+- return nla_put(skb, attrtype, sizeof(s64), &value);
++ s64 tmp = value;
++
++ return nla_put(skb, attrtype, sizeof(s64), &tmp);
+ }
+
+ /**
+@@ -969,7 +1004,9 @@ static inline int nla_put_msecs(struct sk_buff *skb, int attrtype,
+ static inline int nla_put_in_addr(struct sk_buff *skb, int attrtype,
+ __be32 addr)
+ {
+- return nla_put_be32(skb, attrtype, addr);
++ __be32 tmp = addr;
++
++ return nla_put_be32(skb, attrtype, tmp);
+ }
+
+ /**
+diff --git a/include/net/red.h b/include/net/red.h
+index 76e0b5f922c6..3618cdfec884 100644
+--- a/include/net/red.h
++++ b/include/net/red.h
+@@ -167,6 +167,17 @@ static inline void red_set_vars(struct red_vars *v)
+ v->qcount = -1;
+ }
+
++static inline bool red_check_params(u32 qth_min, u32 qth_max, u8 Wlog)
++{
++ if (fls(qth_min) + Wlog > 32)
++ return false;
++ if (fls(qth_max) + Wlog > 32)
++ return false;
++ if (qth_max < qth_min)
++ return false;
++ return true;
++}
++
+ static inline void red_set_parms(struct red_parms *p,
+ u32 qth_min, u32 qth_max, u8 Wlog, u8 Plog,
+ u8 Scell_log, u8 *stab, u32 max_P)
+@@ -178,7 +189,7 @@ static inline void red_set_parms(struct red_parms *p,
+ p->qth_max = qth_max << Wlog;
+ p->Wlog = Wlog;
+ p->Plog = Plog;
+- if (delta < 0)
++ if (delta <= 0)
+ delta = 1;
+ p->qth_delta = delta;
+ if (!max_P) {
+diff --git a/include/scsi/sg.h b/include/scsi/sg.h
+index 3afec7032448..20bc71c3e0b8 100644
+--- a/include/scsi/sg.h
++++ b/include/scsi/sg.h
+@@ -197,7 +197,6 @@ typedef struct sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */
+ #define SG_DEFAULT_RETRIES 0
+
+ /* Defaults, commented if they differ from original sg driver */
+-#define SG_DEF_FORCE_LOW_DMA 0 /* was 1 -> memory below 16MB on i386 */
+ #define SG_DEF_FORCE_PACK_ID 0
+ #define SG_DEF_KEEP_ORPHAN 0
+ #define SG_DEF_RESERVED_SIZE SG_SCATTER_SZ /* load time option */
+diff --git a/include/trace/events/clk.h b/include/trace/events/clk.h
+index 758607226bfd..2cd449328aee 100644
+--- a/include/trace/events/clk.h
++++ b/include/trace/events/clk.h
+@@ -134,12 +134,12 @@ DECLARE_EVENT_CLASS(clk_parent,
+
+ TP_STRUCT__entry(
+ __string( name, core->name )
+- __string( pname, parent->name )
++ __string( pname, parent ? parent->name : "none" )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, core->name);
+- __assign_str(pname, parent->name);
++ __assign_str(pname, parent ? parent->name : "none");
+ ),
+
+ TP_printk("%s %s", __get_str(name), __get_str(pname))
+diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
+index a44062da684b..c0cf08e9f38a 100644
+--- a/include/trace/events/kvm.h
++++ b/include/trace/events/kvm.h
+@@ -204,7 +204,7 @@ TRACE_EVENT(kvm_ack_irq,
+ { KVM_TRACE_MMIO_WRITE, "write" }
+
+ TRACE_EVENT(kvm_mmio,
+- TP_PROTO(int type, int len, u64 gpa, u64 val),
++ TP_PROTO(int type, int len, u64 gpa, void *val),
+ TP_ARGS(type, len, gpa, val),
+
+ TP_STRUCT__entry(
+@@ -218,7 +218,10 @@ TRACE_EVENT(kvm_mmio,
+ __entry->type = type;
+ __entry->len = len;
+ __entry->gpa = gpa;
+- __entry->val = val;
++ __entry->val = 0;
++ if (val)
++ memcpy(&__entry->val, val,
++ min_t(u32, sizeof(__entry->val), len));
+ ),
+
+ TP_printk("mmio %s len %u gpa 0x%llx val 0x%llx",
+diff --git a/include/uapi/linux/eventpoll.h b/include/uapi/linux/eventpoll.h
+index bc81fb2e1f0e..6f04cb419115 100644
+--- a/include/uapi/linux/eventpoll.h
++++ b/include/uapi/linux/eventpoll.h
+@@ -26,6 +26,19 @@
+ #define EPOLL_CTL_DEL 2
+ #define EPOLL_CTL_MOD 3
+
++/* Epoll event masks */
++#define EPOLLIN 0x00000001
++#define EPOLLPRI 0x00000002
++#define EPOLLOUT 0x00000004
++#define EPOLLERR 0x00000008
++#define EPOLLHUP 0x00000010
++#define EPOLLRDNORM 0x00000040
++#define EPOLLRDBAND 0x00000080
++#define EPOLLWRNORM 0x00000100
++#define EPOLLWRBAND 0x00000200
++#define EPOLLMSG 0x00000400
++#define EPOLLRDHUP 0x00002000
++
+ /*
+ * Request the handling of system wakeup events so as to prevent system suspends
+ * from happening while those events are being processed.
+diff --git a/ipc/msg.c b/ipc/msg.c
+index 3b2b0f5149ab..55730c74a42a 100644
+--- a/ipc/msg.c
++++ b/ipc/msg.c
+@@ -740,7 +740,10 @@ static inline int convert_mode(long *msgtyp, int msgflg)
+ if (*msgtyp == 0)
+ return SEARCH_ANY;
+ if (*msgtyp < 0) {
+- *msgtyp = -*msgtyp;
++ if (*msgtyp == LONG_MIN) /* -LONG_MIN is undefined */
++ *msgtyp = LONG_MAX;
++ else
++ *msgtyp = -*msgtyp;
+ return SEARCH_LESSEQUAL;
+ }
+ if (msgflg & MSG_EXCEPT)
+diff --git a/kernel/acct.c b/kernel/acct.c
+index 74963d192c5d..37f1dc696fbd 100644
+--- a/kernel/acct.c
++++ b/kernel/acct.c
+@@ -99,7 +99,7 @@ static int check_free_space(struct bsd_acct_struct *acct)
+ {
+ struct kstatfs sbuf;
+
+- if (time_is_before_jiffies(acct->needcheck))
++ if (time_is_after_jiffies(acct->needcheck))
+ goto out;
+
+ /* May block */
+diff --git a/kernel/async.c b/kernel/async.c
+index 4c3773c0bf63..f1fd155abff6 100644
+--- a/kernel/async.c
++++ b/kernel/async.c
+@@ -84,20 +84,24 @@ static atomic_t entry_count;
+
+ static async_cookie_t lowest_in_progress(struct async_domain *domain)
+ {
+- struct list_head *pending;
++ struct async_entry *first = NULL;
+ async_cookie_t ret = ASYNC_COOKIE_MAX;
+ unsigned long flags;
+
+ spin_lock_irqsave(&async_lock, flags);
+
+- if (domain)
+- pending = &domain->pending;
+- else
+- pending = &async_global_pending;
++ if (domain) {
++ if (!list_empty(&domain->pending))
++ first = list_first_entry(&domain->pending,
++ struct async_entry, domain_list);
++ } else {
++ if (!list_empty(&async_global_pending))
++ first = list_first_entry(&async_global_pending,
++ struct async_entry, global_list);
++ }
+
+- if (!list_empty(pending))
+- ret = list_first_entry(pending, struct async_entry,
+- domain_list)->cookie;
++ if (first)
++ ret = first->cookie;
+
+ spin_unlock_irqrestore(&async_lock, flags);
+ return ret;
+diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
+index 54f0e7fcd0e2..199b54e75359 100644
+--- a/kernel/bpf/core.c
++++ b/kernel/bpf/core.c
+@@ -361,7 +361,7 @@ select_insn:
+ DST = tmp;
+ CONT;
+ ALU_MOD_X:
+- if (unlikely(SRC == 0))
++ if (unlikely((u32)SRC == 0))
+ return 0;
+ tmp = (u32) DST;
+ DST = do_div(tmp, (u32) SRC);
+@@ -380,7 +380,7 @@ select_insn:
+ DST = div64_u64(DST, SRC);
+ CONT;
+ ALU_DIV_X:
+- if (unlikely(SRC == 0))
++ if (unlikely((u32)SRC == 0))
+ return 0;
+ tmp = (u32) DST;
+ do_div(tmp, (u32) SRC);
+diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
+index 1bdc6f910a1d..03d74868c709 100644
+--- a/kernel/bpf/verifier.c
++++ b/kernel/bpf/verifier.c
+@@ -1020,6 +1020,11 @@ static int check_alu_op(struct reg_state *regs, struct bpf_insn *insn)
+ return -EINVAL;
+ }
+
++ if (opcode == BPF_ARSH && BPF_CLASS(insn->code) != BPF_ALU64) {
++ verbose("BPF_ARSH not supported for 32 bit ALU\n");
++ return -EINVAL;
++ }
++
+ if ((opcode == BPF_LSH || opcode == BPF_RSH ||
+ opcode == BPF_ARSH) && BPF_SRC(insn->code) == BPF_K) {
+ int size = BPF_CLASS(insn->code) == BPF_ALU64 ? 64 : 32;
+diff --git a/kernel/futex.c b/kernel/futex.c
+index 585cf96dab32..4195616b27d9 100644
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -1514,6 +1514,9 @@ static int futex_requeue(u32 __user *uaddr1, unsigned int flags,
+ struct futex_hash_bucket *hb1, *hb2;
+ struct futex_q *this, *next;
+
++ if (nr_wake < 0 || nr_requeue < 0)
++ return -EINVAL;
++
+ if (requeue_pi) {
+ /*
+ * Requeue PI only works on two distinct uaddrs. This
+@@ -1831,8 +1834,12 @@ static int unqueue_me(struct futex_q *q)
+
+ /* In the common case we don't take the spinlock, which is nice. */
+ retry:
+- lock_ptr = q->lock_ptr;
+- barrier();
++ /*
++ * q->lock_ptr can change between this read and the following spin_lock.
++ * Use READ_ONCE to forbid the compiler from reloading q->lock_ptr and
++ * optimizing lock_ptr out of the logic below.
++ */
++ lock_ptr = READ_ONCE(q->lock_ptr);
+ if (lock_ptr != NULL) {
+ spin_lock(lock_ptr);
+ /*
+diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig
+index c92e44855ddd..1276aabaab55 100644
+--- a/kernel/gcov/Kconfig
++++ b/kernel/gcov/Kconfig
+@@ -37,6 +37,7 @@ config ARCH_HAS_GCOV_PROFILE_ALL
+
+ config GCOV_PROFILE_ALL
+ bool "Profile entire Kernel"
++ depends on !COMPILE_TEST
+ depends on GCOV_KERNEL
+ depends on ARCH_HAS_GCOV_PROFILE_ALL
+ default n
+diff --git a/kernel/groups.c b/kernel/groups.c
+index 74d431d25251..5ea9847f172f 100644
+--- a/kernel/groups.c
++++ b/kernel/groups.c
+@@ -101,7 +101,7 @@ static int groups_from_user(struct group_info *group_info,
+ }
+
+ /* a simple Shell sort */
+-static void groups_sort(struct group_info *group_info)
++void groups_sort(struct group_info *group_info)
+ {
+ int base, max, stride;
+ int gidsetsize = group_info->ngroups;
+@@ -128,6 +128,7 @@ static void groups_sort(struct group_info *group_info)
+ stride /= 3;
+ }
+ }
++EXPORT_SYMBOL(groups_sort);
+
+ /* a simple bsearch */
+ int groups_search(const struct group_info *group_info, kgid_t grp)
+@@ -159,7 +160,6 @@ int groups_search(const struct group_info *group_info, kgid_t grp)
+ void set_groups(struct cred *new, struct group_info *group_info)
+ {
+ put_group_info(new->group_info);
+- groups_sort(group_info);
+ get_group_info(group_info);
+ new->group_info = group_info;
+ }
+@@ -243,6 +243,7 @@ SYSCALL_DEFINE2(setgroups, int, gidsetsize, gid_t __user *, grouplist)
+ return retval;
+ }
+
++ groups_sort(group_info);
+ retval = set_current_groups(group_info);
+ put_group_info(group_info);
+
+diff --git a/kernel/module.c b/kernel/module.c
+index 6920d1080cdd..c38bf6e486a4 100644
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -2233,7 +2233,7 @@ static char elf_type(const Elf_Sym *sym, const struct load_info *info)
+ }
+ if (sym->st_shndx == SHN_UNDEF)
+ return 'U';
+- if (sym->st_shndx == SHN_ABS)
++ if (sym->st_shndx == SHN_ABS || sym->st_shndx == info->index.pcpu)
+ return 'a';
+ if (sym->st_shndx >= SHN_LORESERVE)
+ return '?';
+@@ -2262,7 +2262,7 @@ static char elf_type(const Elf_Sym *sym, const struct load_info *info)
+ }
+
+ static bool is_core_symbol(const Elf_Sym *src, const Elf_Shdr *sechdrs,
+- unsigned int shnum)
++ unsigned int shnum, unsigned int pcpundx)
+ {
+ const Elf_Shdr *sec;
+
+@@ -2271,6 +2271,11 @@ static bool is_core_symbol(const Elf_Sym *src, const Elf_Shdr *sechdrs,
+ || !src->st_name)
+ return false;
+
++#ifdef CONFIG_KALLSYMS_ALL
++ if (src->st_shndx == pcpundx)
++ return true;
++#endif
++
+ sec = sechdrs + src->st_shndx;
+ if (!(sec->sh_flags & SHF_ALLOC)
+ #ifndef CONFIG_KALLSYMS_ALL
+@@ -2308,7 +2313,8 @@ static void layout_symtab(struct module *mod, struct load_info *info)
+ /* Compute total space required for the core symbols' strtab. */
+ for (ndst = i = 0; i < nsrc; i++) {
+ if (i == 0 ||
+- is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum)) {
++ is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum,
++ info->index.pcpu)) {
+ strtab_size += strlen(&info->strtab[src[i].st_name])+1;
+ ndst++;
+ }
+@@ -2366,7 +2372,8 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
+ src = mod->kallsyms->symtab;
+ for (ndst = i = 0; i < mod->kallsyms->num_symtab; i++) {
+ if (i == 0 ||
+- is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum)) {
++ is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum,
++ info->index.pcpu)) {
+ dst[ndst] = src[i];
+ dst[ndst++].st_name = s - mod->core_kallsyms.strtab;
+ s += strlcpy(s, &mod->kallsyms->strtab[src[i].st_name],
+@@ -2726,8 +2733,12 @@ static int check_modinfo(struct module *mod, struct load_info *info, int flags)
+ return -ENOEXEC;
+ }
+
+- if (!get_modinfo(info, "intree"))
++ if (!get_modinfo(info, "intree")) {
++ if (!test_taint(TAINT_OOT_MODULE))
++ pr_warn("%s: loading out-of-tree module taints kernel.\n",
++ mod->name);
+ add_taint_module(mod, TAINT_OOT_MODULE, LOCKDEP_STILL_OK);
++ }
+
+ if (get_modinfo(info, "staging")) {
+ add_taint_module(mod, TAINT_CRAP, LOCKDEP_STILL_OK);
+@@ -2892,6 +2903,8 @@ static int move_module(struct module *mod, struct load_info *info)
+
+ static int check_module_license_and_versions(struct module *mod)
+ {
++ int prev_taint = test_taint(TAINT_PROPRIETARY_MODULE);
++
+ /*
+ * ndiswrapper is under GPL by itself, but loads proprietary modules.
+ * Don't use add_taint_module(), as it would prevent ndiswrapper from
+@@ -2910,6 +2923,9 @@ static int check_module_license_and_versions(struct module *mod)
+ add_taint_module(mod, TAINT_PROPRIETARY_MODULE,
+ LOCKDEP_NOW_UNRELIABLE);
+
++ if (!prev_taint && test_taint(TAINT_PROPRIETARY_MODULE))
++ pr_warn("%s: module license taints kernel.\n", mod->name);
++
+ #ifdef CONFIG_MODVERSIONS
+ if ((mod->num_syms && !mod->crcs)
+ || (mod->num_gpl_syms && !mod->gpl_crcs)
+diff --git a/kernel/profile.c b/kernel/profile.c
+index a7bcd28d6e9f..7ad939c708b9 100644
+--- a/kernel/profile.c
++++ b/kernel/profile.c
+@@ -44,7 +44,7 @@ int prof_on __read_mostly;
+ EXPORT_SYMBOL_GPL(prof_on);
+
+ static cpumask_var_t prof_cpu_mask;
+-#ifdef CONFIG_SMP
++#if defined(CONFIG_SMP) && defined(CONFIG_PROC_FS)
+ static DEFINE_PER_CPU(struct profile_hit *[2], cpu_profile_hits);
+ static DEFINE_PER_CPU(int, cpu_profile_flip);
+ static DEFINE_MUTEX(profile_flip_mutex);
+@@ -201,7 +201,7 @@ int profile_event_unregister(enum profile_type type, struct notifier_block *n)
+ }
+ EXPORT_SYMBOL_GPL(profile_event_unregister);
+
+-#ifdef CONFIG_SMP
++#if defined(CONFIG_SMP) && defined(CONFIG_PROC_FS)
+ /*
+ * Each cpu has a pair of open-addressed hashtables for pending
+ * profile hits. read_profile() IPI's all cpus to request them
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 8fbedeb5553f..9c905bd94ff0 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -32,7 +32,7 @@
+ #include <linux/init.h>
+ #include <linux/uaccess.h>
+ #include <linux/highmem.h>
+-#include <asm/mmu_context.h>
++#include <linux/mmu_context.h>
+ #include <linux/interrupt.h>
+ #include <linux/capability.h>
+ #include <linux/completion.h>
+@@ -2339,7 +2339,7 @@ context_switch(struct rq *rq, struct task_struct *prev,
+ atomic_inc(&oldmm->mm_count);
+ enter_lazy_tlb(oldmm, next);
+ } else
+- switch_mm(oldmm, mm, next);
++ switch_mm_irqs_off(oldmm, mm, next);
+
+ if (!prev->mm) {
+ prev->active_mm = NULL;
+diff --git a/kernel/signal.c b/kernel/signal.c
+index 525a4cda5598..46a2471173b8 100644
+--- a/kernel/signal.c
++++ b/kernel/signal.c
+@@ -72,7 +72,7 @@ static int sig_task_ignored(struct task_struct *t, int sig, bool force)
+ handler = sig_handler(t, sig);
+
+ if (unlikely(t->signal->flags & SIGNAL_UNKILLABLE) &&
+- handler == SIG_DFL && !force)
++ handler == SIG_DFL && !(force && sig_kernel_only(sig)))
+ return 1;
+
+ return sig_handler_ignored(handler, sig);
+@@ -88,13 +88,15 @@ static int sig_ignored(struct task_struct *t, int sig, bool force)
+ if (sigismember(&t->blocked, sig) || sigismember(&t->real_blocked, sig))
+ return 0;
+
+- if (!sig_task_ignored(t, sig, force))
+- return 0;
+-
+ /*
+- * Tracers may want to know about even ignored signals.
++ * Tracers may want to know about even ignored signal unless it
++ * is SIGKILL which can't be reported anyway but can be ignored
++ * by SIGNAL_UNKILLABLE task.
+ */
+- return !t->ptrace;
++ if (t->ptrace && sig != SIGKILL)
++ return 0;
++
++ return sig_task_ignored(t, sig, force);
+ }
+
+ /*
+@@ -960,9 +962,9 @@ static void complete_signal(int sig, struct task_struct *p, int group)
+ * then start taking the whole group down immediately.
+ */
+ if (sig_fatal(p, sig) &&
+- !(signal->flags & (SIGNAL_UNKILLABLE | SIGNAL_GROUP_EXIT)) &&
++ !(signal->flags & SIGNAL_GROUP_EXIT) &&
+ !sigismember(&t->real_blocked, sig) &&
+- (sig == SIGKILL || !t->ptrace)) {
++ (sig == SIGKILL || !p->ptrace)) {
+ /*
+ * This signal will be fatal to the whole group.
+ */
+diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
+index 93ef7190bdea..e82a5f40a0ac 100644
+--- a/kernel/time/hrtimer.c
++++ b/kernel/time/hrtimer.c
+@@ -292,7 +292,7 @@ EXPORT_SYMBOL_GPL(__ktime_divns);
+ */
+ ktime_t ktime_add_safe(const ktime_t lhs, const ktime_t rhs)
+ {
+- ktime_t res = ktime_add(lhs, rhs);
++ ktime_t res = ktime_add_unsafe(lhs, rhs);
+
+ /*
+ * We use KTIME_SEC_MAX here, the maximum timeout which we can
+diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
+index 31ea01f42e1f..2cca2e79c643 100644
+--- a/kernel/time/posix-timers.c
++++ b/kernel/time/posix-timers.c
+@@ -500,17 +500,22 @@ static struct pid *good_sigevent(sigevent_t * event)
+ {
+ struct task_struct *rtn = current->group_leader;
+
+- if ((event->sigev_notify & SIGEV_THREAD_ID ) &&
+- (!(rtn = find_task_by_vpid(event->sigev_notify_thread_id)) ||
+- !same_thread_group(rtn, current) ||
+- (event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_SIGNAL))
++ switch (event->sigev_notify) {
++ case SIGEV_SIGNAL | SIGEV_THREAD_ID:
++ rtn = find_task_by_vpid(event->sigev_notify_thread_id);
++ if (!rtn || !same_thread_group(rtn, current))
++ return NULL;
++ /* FALLTHRU */
++ case SIGEV_SIGNAL:
++ case SIGEV_THREAD:
++ if (event->sigev_signo <= 0 || event->sigev_signo > SIGRTMAX)
++ return NULL;
++ /* FALLTHRU */
++ case SIGEV_NONE:
++ return task_pid(rtn);
++ default:
+ return NULL;
+-
+- if (((event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) &&
+- ((event->sigev_signo <= 0) || (event->sigev_signo > SIGRTMAX)))
+- return NULL;
+-
+- return task_pid(rtn);
++ }
+ }
+
+ void posix_timers_register_clock(const clockid_t clock_id,
+@@ -738,8 +743,7 @@ common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting)
+ /* interval timer ? */
+ if (iv.tv64)
+ cur_setting->it_interval = ktime_to_timespec(iv);
+- else if (!hrtimer_active(timer) &&
+- (timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE)
++ else if (!hrtimer_active(timer) && timr->it_sigev_notify != SIGEV_NONE)
+ return;
+
+ now = timer->base->get_time();
+@@ -750,7 +754,7 @@ common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting)
+ * expiry is > now.
+ */
+ if (iv.tv64 && (timr->it_requeue_pending & REQUEUE_PENDING ||
+- (timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE))
++ timr->it_sigev_notify == SIGEV_NONE))
+ timr->it_overrun += (unsigned int) hrtimer_forward(timer, now, iv);
+
+ remaining = ktime_sub(hrtimer_get_expires(timer), now);
+@@ -760,7 +764,7 @@ common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting)
+ * A single shot SIGEV_NONE timer must return 0, when
+ * it is expired !
+ */
+- if ((timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE)
++ if (timr->it_sigev_notify != SIGEV_NONE)
+ cur_setting->it_value.tv_nsec = 1;
+ } else
+ cur_setting->it_value = ktime_to_timespec(remaining);
+@@ -858,7 +862,7 @@ common_timer_set(struct k_itimer *timr, int flags,
+ timr->it.real.interval = timespec_to_ktime(new_setting->it_interval);
+
+ /* SIGEV_NONE timers are not queued ! See common_timer_get */
+- if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) {
++ if (timr->it_sigev_notify == SIGEV_NONE) {
+ /* Setup correct expiry time for relative timers */
+ if (mode == HRTIMER_MODE_REL) {
+ hrtimer_add_expires(timer, timer->base->get_time());
+diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
+index 483cecfa5c17..1994901ef239 100644
+--- a/kernel/trace/blktrace.c
++++ b/kernel/trace/blktrace.c
+@@ -57,7 +57,8 @@ static struct tracer_flags blk_tracer_flags = {
+ };
+
+ /* Global reference count of probes */
+-static atomic_t blk_probes_ref = ATOMIC_INIT(0);
++static DEFINE_MUTEX(blk_probe_mutex);
++static int blk_probes_ref;
+
+ static void blk_register_tracepoints(void);
+ static void blk_unregister_tracepoints(void);
+@@ -300,11 +301,26 @@ static void blk_trace_free(struct blk_trace *bt)
+ kfree(bt);
+ }
+
++static void get_probe_ref(void)
++{
++ mutex_lock(&blk_probe_mutex);
++ if (++blk_probes_ref == 1)
++ blk_register_tracepoints();
++ mutex_unlock(&blk_probe_mutex);
++}
++
++static void put_probe_ref(void)
++{
++ mutex_lock(&blk_probe_mutex);
++ if (!--blk_probes_ref)
++ blk_unregister_tracepoints();
++ mutex_unlock(&blk_probe_mutex);
++}
++
+ static void blk_trace_cleanup(struct blk_trace *bt)
+ {
+ blk_trace_free(bt);
+- if (atomic_dec_and_test(&blk_probes_ref))
+- blk_unregister_tracepoints();
++ put_probe_ref();
+ }
+
+ int blk_trace_remove(struct request_queue *q)
+@@ -527,8 +543,7 @@ int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
+ goto err;
+ }
+
+- if (atomic_inc_return(&blk_probes_ref) == 1)
+- blk_register_tracepoints();
++ get_probe_ref();
+
+ return 0;
+ err:
+@@ -1474,9 +1489,7 @@ static int blk_trace_remove_queue(struct request_queue *q)
+ if (bt == NULL)
+ return -EINVAL;
+
+- if (atomic_dec_and_test(&blk_probes_ref))
+- blk_unregister_tracepoints();
+-
++ put_probe_ref();
+ blk_trace_free(bt);
+ return 0;
+ }
+@@ -1510,8 +1523,7 @@ static int blk_trace_setup_queue(struct request_queue *q,
+ goto free_bt;
+ }
+
+- if (atomic_inc_return(&blk_probes_ref) == 1)
+- blk_register_tracepoints();
++ get_probe_ref();
+ return 0;
+
+ free_bt:
+diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
+index 75c5271a56c2..40bc77080fad 100644
+--- a/kernel/trace/ring_buffer.c
++++ b/kernel/trace/ring_buffer.c
+@@ -332,6 +332,8 @@ EXPORT_SYMBOL_GPL(ring_buffer_event_data);
+ /* Missed count stored at end */
+ #define RB_MISSED_STORED (1 << 30)
+
++#define RB_MISSED_FLAGS (RB_MISSED_EVENTS|RB_MISSED_STORED)
++
+ struct buffer_data_page {
+ u64 time_stamp; /* page time stamp */
+ local_t commit; /* write committed index */
+@@ -383,7 +385,9 @@ static void rb_init_page(struct buffer_data_page *bpage)
+ */
+ size_t ring_buffer_page_len(void *page)
+ {
+- return local_read(&((struct buffer_data_page *)page)->commit)
++ struct buffer_data_page *bpage = page;
++
++ return (local_read(&bpage->commit) & ~RB_MISSED_FLAGS)
+ + BUF_PAGE_HDR_SIZE;
+ }
+
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index 7a26798ffbf9..d03f7eadc1f3 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -5719,7 +5719,7 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
+ .spd_release = buffer_spd_release,
+ };
+ struct buffer_ref *ref;
+- int entries, size, i;
++ int entries, i;
+ ssize_t ret = 0;
+
+ #ifdef CONFIG_TRACER_MAX_TRACE
+@@ -5770,14 +5770,6 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
+ break;
+ }
+
+- /*
+- * zero out any left over data, this is going to
+- * user land.
+- */
+- size = ring_buffer_page_len(ref->page);
+- if (size < PAGE_SIZE)
+- memset(ref->page + size, 0, PAGE_SIZE - size);
+-
+ page = virt_to_page(ref->page);
+
+ spd.pages[i] = page;
+@@ -6448,6 +6440,7 @@ allocate_trace_buffer(struct trace_array *tr, struct trace_buffer *buf, int size
+ buf->data = alloc_percpu(struct trace_array_cpu);
+ if (!buf->data) {
+ ring_buffer_free(buf->buffer);
++ buf->buffer = NULL;
+ return -ENOMEM;
+ }
+
+@@ -6471,7 +6464,9 @@ static int allocate_trace_buffers(struct trace_array *tr, int size)
+ allocate_snapshot ? size : 1);
+ if (WARN_ON(ret)) {
+ ring_buffer_free(tr->trace_buffer.buffer);
++ tr->trace_buffer.buffer = NULL;
+ free_percpu(tr->trace_buffer.data);
++ tr->trace_buffer.data = NULL;
+ return -ENOMEM;
+ }
+ tr->allocated_snapshot = allocate_snapshot;
+diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
+index 6459f77e2c72..d19406850b0d 100644
+--- a/kernel/trace/trace_events.c
++++ b/kernel/trace/trace_events.c
+@@ -1819,6 +1819,7 @@ void trace_event_enum_update(struct trace_enum_map **map, int len)
+ {
+ struct ftrace_event_call *call, *p;
+ const char *last_system = NULL;
++ bool first = false;
+ int last_i;
+ int i;
+
+@@ -1826,15 +1827,28 @@ void trace_event_enum_update(struct trace_enum_map **map, int len)
+ list_for_each_entry_safe(call, p, &ftrace_events, list) {
+ /* events are usually grouped together with systems */
+ if (!last_system || call->class->system != last_system) {
++ first = true;
+ last_i = 0;
+ last_system = call->class->system;
+ }
+
++ /*
++ * Since calls are grouped by systems, the likelyhood that the
++ * next call in the iteration belongs to the same system as the
++ * previous call is high. As an optimization, we skip seaching
++ * for a map[] that matches the call's system if the last call
++ * was from the same system. That's what last_i is for. If the
++ * call has the same system as the previous call, then last_i
++ * will be the index of the first map[] that has a matching
++ * system.
++ */
+ for (i = last_i; i < len; i++) {
+ if (call->class->system == map[i]->system) {
+ /* Save the first system if need be */
+- if (!last_i)
++ if (first) {
+ last_i = i;
++ first = false;
++ }
+ update_event_printk(call, map[i]);
+ }
+ }
+diff --git a/kernel/uid16.c b/kernel/uid16.c
+index d58cc4d8f0d1..651aaa5221ec 100644
+--- a/kernel/uid16.c
++++ b/kernel/uid16.c
+@@ -190,6 +190,7 @@ SYSCALL_DEFINE2(setgroups16, int, gidsetsize, old_gid_t __user *, grouplist)
+ return retval;
+ }
+
++ groups_sort(group_info);
+ retval = set_current_groups(group_info);
+ put_group_info(group_info);
+
+diff --git a/lib/oid_registry.c b/lib/oid_registry.c
+index 318f382a010d..150e04d70303 100644
+--- a/lib/oid_registry.c
++++ b/lib/oid_registry.c
+@@ -116,7 +116,7 @@ int sprint_oid(const void *data, size_t datasize, char *buffer, size_t bufsize)
+ int count;
+
+ if (v >= end)
+- return -EBADMSG;
++ goto bad;
+
+ n = *v++;
+ ret = count = snprintf(buffer, bufsize, "%u.%u", n / 40, n % 40);
+@@ -134,7 +134,7 @@ int sprint_oid(const void *data, size_t datasize, char *buffer, size_t bufsize)
+ num = n & 0x7f;
+ do {
+ if (v >= end)
+- return -EBADMSG;
++ goto bad;
+ n = *v++;
+ num <<= 7;
+ num |= n & 0x7f;
+@@ -148,6 +148,10 @@ int sprint_oid(const void *data, size_t datasize, char *buffer, size_t bufsize)
+ }
+
+ return ret;
++
++bad:
++ snprintf(buffer, bufsize, "(bad)");
++ return -EBADMSG;
+ }
+ EXPORT_SYMBOL_GPL(sprint_oid);
+
+diff --git a/mm/cma.c b/mm/cma.c
+index 3a7a67b93394..3b4e38689202 100644
+--- a/mm/cma.c
++++ b/mm/cma.c
+@@ -54,7 +54,7 @@ unsigned long cma_get_size(const struct cma *cma)
+ }
+
+ static unsigned long cma_bitmap_aligned_mask(const struct cma *cma,
+- int align_order)
++ unsigned int align_order)
+ {
+ if (align_order <= cma->order_per_bit)
+ return 0;
+@@ -62,17 +62,14 @@ static unsigned long cma_bitmap_aligned_mask(const struct cma *cma,
+ }
+
+ /*
+- * Find a PFN aligned to the specified order and return an offset represented in
+- * order_per_bits.
++ * Find the offset of the base PFN from the specified align_order.
++ * The value returned is represented in order_per_bits.
+ */
+ static unsigned long cma_bitmap_aligned_offset(const struct cma *cma,
+- int align_order)
++ unsigned int align_order)
+ {
+- if (align_order <= cma->order_per_bit)
+- return 0;
+-
+- return (ALIGN(cma->base_pfn, (1UL << align_order))
+- - cma->base_pfn) >> cma->order_per_bit;
++ return (cma->base_pfn & ((1UL << align_order) - 1))
++ >> cma->order_per_bit;
+ }
+
+ static unsigned long cma_bitmap_pages_to_bits(const struct cma *cma,
+diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c
+index e10ccd299d66..5edcf1b37fa6 100644
+--- a/mm/early_ioremap.c
++++ b/mm/early_ioremap.c
+@@ -102,7 +102,7 @@ __early_ioremap(resource_size_t phys_addr, unsigned long size, pgprot_t prot)
+ enum fixed_addresses idx;
+ int i, slot;
+
+- WARN_ON(system_state != SYSTEM_BOOTING);
++ WARN_ON(system_state >= SYSTEM_RUNNING);
+
+ slot = -1;
+ for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
+diff --git a/mm/memcontrol.c b/mm/memcontrol.c
+index 221762e24a68..696b5bbac2e0 100644
+--- a/mm/memcontrol.c
++++ b/mm/memcontrol.c
+@@ -5641,7 +5641,7 @@ static void uncharge_list(struct list_head *page_list)
+ next = page->lru.next;
+
+ VM_BUG_ON_PAGE(PageLRU(page), page);
+- VM_BUG_ON_PAGE(page_count(page), page);
++ VM_BUG_ON_PAGE(!PageHWPoison(page) && page_count(page), page);
+
+ if (!page->mem_cgroup)
+ continue;
+diff --git a/mm/memory-failure.c b/mm/memory-failure.c
+index 321f5632c17b..7c57635958f2 100644
+--- a/mm/memory-failure.c
++++ b/mm/memory-failure.c
+@@ -582,6 +582,13 @@ static int delete_from_lru_cache(struct page *p)
+ */
+ ClearPageActive(p);
+ ClearPageUnevictable(p);
++
++ /*
++ * Poisoned page might never drop its ref count to 0 so we have
++ * to uncharge it manually from its memcg.
++ */
++ mem_cgroup_uncharge(p);
++
+ /*
+ * drop the page count elevated by isolate_lru_page()
+ */
+diff --git a/mm/memory.c b/mm/memory.c
+index fc449016d10e..942daab4dc57 100644
+--- a/mm/memory.c
++++ b/mm/memory.c
+@@ -71,7 +71,7 @@
+
+ #include "internal.h"
+
+-#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS
++#if defined(LAST_CPUPID_NOT_IN_PAGE_FLAGS) && !defined(CONFIG_COMPILE_TEST)
+ #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.
+ #endif
+
+diff --git a/mm/mmap.c b/mm/mmap.c
+index 1094833d0e82..d730c1b91a12 100644
+--- a/mm/mmap.c
++++ b/mm/mmap.c
+@@ -2179,7 +2179,8 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
+ if (gap_addr < address)
+ return -ENOMEM;
+ next = vma->vm_next;
+- if (next && next->vm_start < gap_addr) {
++ if (next && next->vm_start < gap_addr &&
++ (next->vm_flags & (VM_WRITE|VM_READ|VM_EXEC))) {
+ if (!(next->vm_flags & VM_GROWSUP))
+ return -ENOMEM;
+ /* Check that both stack segments have the same anon_vma? */
+@@ -2260,7 +2261,8 @@ int expand_downwards(struct vm_area_struct *vma,
+ if (gap_addr > address)
+ return -ENOMEM;
+ prev = vma->vm_prev;
+- if (prev && prev->vm_end > gap_addr) {
++ if (prev && prev->vm_end > gap_addr &&
++ (prev->vm_flags & (VM_WRITE|VM_READ|VM_EXEC))) {
+ if (!(prev->vm_flags & VM_GROWSDOWN))
+ return -ENOMEM;
+ /* Check that both stack segments have the same anon_vma? */
+diff --git a/mm/mmu_context.c b/mm/mmu_context.c
+index f802c2d216a7..6f4d27c5bb32 100644
+--- a/mm/mmu_context.c
++++ b/mm/mmu_context.c
+@@ -4,9 +4,9 @@
+ */
+
+ #include <linux/mm.h>
++#include <linux/sched.h>
+ #include <linux/mmu_context.h>
+ #include <linux/export.h>
+-#include <linux/sched.h>
+
+ #include <asm/mmu_context.h>
+
+diff --git a/mm/page-writeback.c b/mm/page-writeback.c
+index eb59f7eea508..308757ae508d 100644
+--- a/mm/page-writeback.c
++++ b/mm/page-writeback.c
+@@ -967,6 +967,7 @@ static void bdi_update_dirty_ratelimit(struct backing_dev_info *bdi,
+ unsigned long pos_ratio;
+ unsigned long step;
+ unsigned long x;
++ unsigned long shift;
+
+ /*
+ * The dirty rate will match the writeout rate in long term, except
+@@ -1094,11 +1095,11 @@ static void bdi_update_dirty_ratelimit(struct backing_dev_info *bdi,
+ * rate itself is constantly fluctuating. So decrease the track speed
+ * when it gets close to the target. Helps eliminate pointless tremors.
+ */
+- step >>= dirty_ratelimit / (2 * step + 1);
+- /*
+- * Limit the tracking speed to avoid overshooting.
+- */
+- step = (step + 7) / 8;
++ shift = dirty_ratelimit / (2 * step + 1);
++ if (shift < BITS_PER_LONG)
++ step = DIV_ROUND_UP(step >> shift, 8);
++ else
++ step = 0;
+
+ if (dirty_ratelimit < balanced_dirty_ratelimit)
+ dirty_ratelimit += step;
+diff --git a/mm/util.c b/mm/util.c
+index 68ff8a5361e7..4baa25c35af8 100644
+--- a/mm/util.c
++++ b/mm/util.c
+@@ -80,6 +80,8 @@ EXPORT_SYMBOL(kstrdup_const);
+ * @s: the string to duplicate
+ * @max: read at most @max chars from @s
+ * @gfp: the GFP mask used in the kmalloc() call when allocating memory
++ *
++ * Note: Use kmemdup_nul() instead if the size is known exactly.
+ */
+ char *kstrndup(const char *s, size_t max, gfp_t gfp)
+ {
+@@ -117,6 +119,28 @@ void *kmemdup(const void *src, size_t len, gfp_t gfp)
+ }
+ EXPORT_SYMBOL(kmemdup);
+
++/**
++ * kmemdup_nul - Create a NUL-terminated string from unterminated data
++ * @s: The data to stringify
++ * @len: The size of the data
++ * @gfp: the GFP mask used in the kmalloc() call when allocating memory
++ */
++char *kmemdup_nul(const char *s, size_t len, gfp_t gfp)
++{
++ char *buf;
++
++ if (!s)
++ return NULL;
++
++ buf = kmalloc_track_caller(len + 1, gfp);
++ if (buf) {
++ memcpy(buf, s, len);
++ buf[len] = '\0';
++ }
++ return buf;
++}
++EXPORT_SYMBOL(kmemdup_nul);
++
+ /**
+ * memdup_user - duplicate memory region from user space
+ *
+diff --git a/mm/vmscan.c b/mm/vmscan.c
+index f16e330e1096..c6033260e739 100644
+--- a/mm/vmscan.c
++++ b/mm/vmscan.c
+@@ -223,10 +223,13 @@ EXPORT_SYMBOL(register_shrinker);
+ */
+ void unregister_shrinker(struct shrinker *shrinker)
+ {
++ if (!shrinker->nr_deferred)
++ return;
+ down_write(&shrinker_rwsem);
+ list_del(&shrinker->list);
+ up_write(&shrinker_rwsem);
+ kfree(shrinker->nr_deferred);
++ shrinker->nr_deferred = NULL;
+ }
+ EXPORT_SYMBOL(unregister_shrinker);
+
+diff --git a/mm/vmstat.c b/mm/vmstat.c
+index 4f5cd974e11a..9b525cd66ca6 100644
+--- a/mm/vmstat.c
++++ b/mm/vmstat.c
+@@ -1326,7 +1326,9 @@ static int vmstat_show(struct seq_file *m, void *arg)
+ unsigned long *l = arg;
+ unsigned long off = l - (unsigned long *)m->private;
+
+- seq_printf(m, "%s %lu\n", vmstat_text[off], *l);
++ seq_puts(m, vmstat_text[off]);
++ seq_put_decimal_ull(m, ' ', *l);
++ seq_putc(m, '\n');
+ return 0;
+ }
+
+diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
+index ce53c8691604..6ce54eed45e8 100644
+--- a/net/8021q/vlan.c
++++ b/net/8021q/vlan.c
+@@ -111,12 +111,7 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
+ vlan_gvrp_uninit_applicant(real_dev);
+ }
+
+- /* Take it out of our own structures, but be sure to interlock with
+- * HW accelerating devices or SW vlan input packet processing if
+- * VLAN is not 0 (leave it there for 802.1p).
+- */
+- if (vlan_id)
+- vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
++ vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
+
+ /* Get rid of the vlan's reference to real_dev */
+ dev_put(real_dev);
+diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
+index 9b6b35977f48..915a584b4e19 100644
+--- a/net/bluetooth/l2cap_core.c
++++ b/net/bluetooth/l2cap_core.c
+@@ -3346,9 +3346,10 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data, size_t data
+ break;
+
+ case L2CAP_CONF_EFS:
+- remote_efs = 1;
+- if (olen == sizeof(efs))
++ if (olen == sizeof(efs)) {
++ remote_efs = 1;
+ memcpy(&efs, (void *) val, olen);
++ }
+ break;
+
+ case L2CAP_CONF_EWS:
+@@ -3567,16 +3568,17 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+ break;
+
+ case L2CAP_CONF_EFS:
+- if (olen == sizeof(efs))
++ if (olen == sizeof(efs)) {
+ memcpy(&efs, (void *)val, olen);
+
+- if (chan->local_stype != L2CAP_SERV_NOTRAFIC &&
+- efs.stype != L2CAP_SERV_NOTRAFIC &&
+- efs.stype != chan->local_stype)
+- return -ECONNREFUSED;
++ if (chan->local_stype != L2CAP_SERV_NOTRAFIC &&
++ efs.stype != L2CAP_SERV_NOTRAFIC &&
++ efs.stype != chan->local_stype)
++ return -ECONNREFUSED;
+
+- l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs),
+- (unsigned long) &efs, endptr - ptr);
++ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs),
++ (unsigned long) &efs, endptr - ptr);
++ }
+ break;
+
+ case L2CAP_CONF_FCS:
+diff --git a/net/can/af_can.c b/net/can/af_can.c
+index 62c635f2bcfc..2a55c0ce9490 100644
+--- a/net/can/af_can.c
++++ b/net/can/af_can.c
+@@ -714,13 +714,12 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev,
+ if (unlikely(!net_eq(dev_net(dev), &init_net)))
+ goto drop;
+
+- if (WARN_ONCE(dev->type != ARPHRD_CAN ||
+- skb->len != CAN_MTU ||
+- cfd->len > CAN_MAX_DLEN,
+- "PF_CAN: dropped non conform CAN skbuf: "
+- "dev type %d, len %d, datalen %d\n",
+- dev->type, skb->len, cfd->len))
++ if (unlikely(dev->type != ARPHRD_CAN || skb->len != CAN_MTU ||
++ cfd->len > CAN_MAX_DLEN)) {
++ pr_warn_once("PF_CAN: dropped non conform CAN skbuf: dev type %d, len %d, datalen %d\n",
++ dev->type, skb->len, cfd->len);
+ goto drop;
++ }
+
+ can_receive(skb, dev);
+ return NET_RX_SUCCESS;
+@@ -738,13 +737,12 @@ static int canfd_rcv(struct sk_buff *skb, struct net_device *dev,
+ if (unlikely(!net_eq(dev_net(dev), &init_net)))
+ goto drop;
+
+- if (WARN_ONCE(dev->type != ARPHRD_CAN ||
+- skb->len != CANFD_MTU ||
+- cfd->len > CANFD_MAX_DLEN,
+- "PF_CAN: dropped non conform CAN FD skbuf: "
+- "dev type %d, len %d, datalen %d\n",
+- dev->type, skb->len, cfd->len))
++ if (unlikely(dev->type != ARPHRD_CAN || skb->len != CANFD_MTU ||
++ cfd->len > CANFD_MAX_DLEN)) {
++ pr_warn_once("PF_CAN: dropped non conform CAN FD skbuf: dev type %d, len %d, datalen %d\n",
++ dev->type, skb->len, cfd->len);
+ goto drop;
++ }
+
+ can_receive(skb, dev);
+ return NET_RX_SUCCESS;
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 4d4213b6f7f6..0ccae464b46e 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -2513,7 +2513,7 @@ struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
+
+ segs = skb_mac_gso_segment(skb, features);
+
+- if (unlikely(skb_needs_check(skb, tx_path)))
++ if (unlikely(skb_needs_check(skb, tx_path) && !IS_ERR(segs)))
+ skb_warn_bad_offload(skb);
+
+ return segs;
+@@ -2803,10 +2803,21 @@ static void qdisc_pkt_len_init(struct sk_buff *skb)
+ hdr_len = skb_transport_header(skb) - skb_mac_header(skb);
+
+ /* + transport layer */
+- if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)))
+- hdr_len += tcp_hdrlen(skb);
+- else
+- hdr_len += sizeof(struct udphdr);
++ if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) {
++ const struct tcphdr *th;
++ struct tcphdr _tcphdr;
++
++ th = skb_header_pointer(skb, skb_transport_offset(skb),
++ sizeof(_tcphdr), &_tcphdr);
++ if (likely(th))
++ hdr_len += __tcp_hdrlen(th);
++ } else {
++ struct udphdr _udphdr;
++
++ if (skb_header_pointer(skb, skb_transport_offset(skb),
++ sizeof(_udphdr), &_udphdr))
++ hdr_len += sizeof(struct udphdr);
++ }
+
+ if (shinfo->gso_type & SKB_GSO_DODGY)
+ gso_segs = DIV_ROUND_UP(skb->len - hdr_len,
+diff --git a/net/core/neighbour.c b/net/core/neighbour.c
+index cb9a7ab5444c..5fd6c6e699aa 100644
+--- a/net/core/neighbour.c
++++ b/net/core/neighbour.c
+@@ -492,7 +492,7 @@ struct neighbour *__neigh_create(struct neigh_table *tbl, const void *pkey,
+ if (atomic_read(&tbl->entries) > (1 << nht->hash_shift))
+ nht = neigh_hash_grow(tbl, nht->hash_shift + 1);
+
+- hash_val = tbl->hash(pkey, dev, nht->hash_rnd) >> (32 - nht->hash_shift);
++ hash_val = tbl->hash(n->primary_key, dev, nht->hash_rnd) >> (32 - nht->hash_shift);
+
+ if (n->parms->dead) {
+ rc = ERR_PTR(-EINVAL);
+@@ -504,7 +504,7 @@ struct neighbour *__neigh_create(struct neigh_table *tbl, const void *pkey,
+ n1 != NULL;
+ n1 = rcu_dereference_protected(n1->next,
+ lockdep_is_held(&tbl->lock))) {
+- if (dev == n1->dev && !memcmp(n1->primary_key, pkey, key_len)) {
++ if (dev == n1->dev && !memcmp(n1->primary_key, n->primary_key, key_len)) {
+ if (want_ref)
+ neigh_hold(n1);
+ rc = n1;
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 97a1fa140a9b..853e82075ebd 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -3694,7 +3694,7 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
+ struct sock *sk = skb->sk;
+
+ if (!skb_may_tx_timestamp(sk, false))
+- return;
++ goto err;
+
+ /* Take a reference to prevent skb_orphan() from freeing the socket,
+ * but only if the socket refcount is not zero.
+@@ -3703,7 +3703,11 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
+ *skb_hwtstamps(skb) = *hwtstamps;
+ __skb_complete_tx_timestamp(skb, sk, SCM_TSTAMP_SND);
+ sock_put(sk);
++ return;
+ }
++
++err:
++ kfree_skb(skb);
+ }
+ EXPORT_SYMBOL_GPL(skb_complete_tx_timestamp);
+
+diff --git a/net/core/sock.c b/net/core/sock.c
+index 76e0b874f378..7697148eec4f 100644
+--- a/net/core/sock.c
++++ b/net/core/sock.c
+@@ -729,7 +729,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
+ val = min_t(u32, val, sysctl_wmem_max);
+ set_sndbuf:
+ sk->sk_userlocks |= SOCK_SNDBUF_LOCK;
+- sk->sk_sndbuf = max_t(u32, val * 2, SOCK_MIN_SNDBUF);
++ sk->sk_sndbuf = max_t(int, val * 2, SOCK_MIN_SNDBUF);
+ /* Wake up sending tasks if we upped the value. */
+ sk->sk_write_space(sk);
+ break;
+@@ -765,7 +765,7 @@ set_rcvbuf:
+ * returning the value we actually used in getsockopt
+ * is the most desirable behavior.
+ */
+- sk->sk_rcvbuf = max_t(u32, val * 2, SOCK_MIN_RCVBUF);
++ sk->sk_rcvbuf = max_t(int, val * 2, SOCK_MIN_RCVBUF);
+ break;
+
+ case SO_RCVBUFFORCE:
+diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
+index a6beb7b6ae55..f5ef2115871f 100644
+--- a/net/core/sysctl_net_core.c
++++ b/net/core/sysctl_net_core.c
+@@ -360,14 +360,16 @@ static struct ctl_table net_core_table[] = {
+ .data = &sysctl_net_busy_poll,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+- .proc_handler = proc_dointvec
++ .proc_handler = proc_dointvec_minmax,
++ .extra1 = &zero,
+ },
+ {
+ .procname = "busy_read",
+ .data = &sysctl_net_busy_read,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+- .proc_handler = proc_dointvec
++ .proc_handler = proc_dointvec_minmax,
++ .extra1 = &zero,
+ },
+ #endif
+ #ifdef CONFIG_NET_SCHED
+diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
+index 5e3a7302f774..7753681195c1 100644
+--- a/net/dccp/ccids/ccid2.c
++++ b/net/dccp/ccids/ccid2.c
+@@ -140,6 +140,9 @@ static void ccid2_hc_tx_rto_expire(unsigned long data)
+
+ ccid2_pr_debug("RTO_EXPIRE\n");
+
++ if (sk->sk_state == DCCP_CLOSED)
++ goto out;
++
+ /* back-off timer */
+ hc->tx_rto <<= 1;
+ if (hc->tx_rto > DCCP_RTO_MAX)
+diff --git a/net/dccp/proto.c b/net/dccp/proto.c
+index 522658179cca..a20dc23360f9 100644
+--- a/net/dccp/proto.c
++++ b/net/dccp/proto.c
+@@ -259,6 +259,7 @@ int dccp_disconnect(struct sock *sk, int flags)
+ {
+ struct inet_connection_sock *icsk = inet_csk(sk);
+ struct inet_sock *inet = inet_sk(sk);
++ struct dccp_sock *dp = dccp_sk(sk);
+ int err = 0;
+ const int old_state = sk->sk_state;
+
+@@ -278,6 +279,10 @@ int dccp_disconnect(struct sock *sk, int flags)
+ sk->sk_err = ECONNRESET;
+
+ dccp_clear_xmit_timers(sk);
++ ccid_hc_rx_delete(dp->dccps_hc_rx_ccid, sk);
++ ccid_hc_tx_delete(dp->dccps_hc_tx_ccid, sk);
++ dp->dccps_hc_rx_ccid = NULL;
++ dp->dccps_hc_tx_ccid = NULL;
+
+ __skb_queue_purge(&sk->sk_receive_queue);
+ __skb_queue_purge(&sk->sk_write_queue);
+diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
+index 2783c538ec19..e31f0da7537a 100644
+--- a/net/decnet/af_decnet.c
++++ b/net/decnet/af_decnet.c
+@@ -1337,6 +1337,12 @@ static int dn_setsockopt(struct socket *sock, int level, int optname, char __use
+ lock_sock(sk);
+ err = __dn_setsockopt(sock, level, optname, optval, optlen, 0);
+ release_sock(sk);
++#ifdef CONFIG_NETFILTER
++ /* we need to exclude all possible ENOPROTOOPTs except default case */
++ if (err == -ENOPROTOOPT && optname != DSO_LINKINFO &&
++ optname != DSO_STREAM && optname != DSO_SEQPACKET)
++ err = nf_setsockopt(sk, PF_DECnet, optname, optval, optlen);
++#endif
+
+ return err;
+ }
+@@ -1444,15 +1450,6 @@ static int __dn_setsockopt(struct socket *sock, int level,int optname, char __us
+ dn_nsp_send_disc(sk, 0x38, 0, sk->sk_allocation);
+ break;
+
+- default:
+-#ifdef CONFIG_NETFILTER
+- return nf_setsockopt(sk, PF_DECnet, optname, optval, optlen);
+-#endif
+- case DSO_LINKINFO:
+- case DSO_STREAM:
+- case DSO_SEQPACKET:
+- return -ENOPROTOOPT;
+-
+ case DSO_MAXWINDOW:
+ if (optlen != sizeof(unsigned long))
+ return -EINVAL;
+@@ -1500,6 +1497,12 @@ static int __dn_setsockopt(struct socket *sock, int level,int optname, char __us
+ return -EINVAL;
+ scp->info_loc = u.info;
+ break;
++
++ case DSO_LINKINFO:
++ case DSO_STREAM:
++ case DSO_SEQPACKET:
++ default:
++ return -ENOPROTOOPT;
+ }
+
+ return 0;
+@@ -1513,6 +1516,20 @@ static int dn_getsockopt(struct socket *sock, int level, int optname, char __use
+ lock_sock(sk);
+ err = __dn_getsockopt(sock, level, optname, optval, optlen, 0);
+ release_sock(sk);
++#ifdef CONFIG_NETFILTER
++ if (err == -ENOPROTOOPT && optname != DSO_STREAM &&
++ optname != DSO_SEQPACKET && optname != DSO_CONACCEPT &&
++ optname != DSO_CONREJECT) {
++ int len;
++
++ if (get_user(len, optlen))
++ return -EFAULT;
++
++ err = nf_getsockopt(sk, PF_DECnet, optname, optval, &len);
++ if (err >= 0)
++ err = put_user(len, optlen);
++ }
++#endif
+
+ return err;
+ }
+@@ -1578,26 +1595,6 @@ static int __dn_getsockopt(struct socket *sock, int level,int optname, char __us
+ r_data = &link;
+ break;
+
+- default:
+-#ifdef CONFIG_NETFILTER
+- {
+- int ret, len;
+-
+- if (get_user(len, optlen))
+- return -EFAULT;
+-
+- ret = nf_getsockopt(sk, PF_DECnet, optname, optval, &len);
+- if (ret >= 0)
+- ret = put_user(len, optlen);
+- return ret;
+- }
+-#endif
+- case DSO_STREAM:
+- case DSO_SEQPACKET:
+- case DSO_CONACCEPT:
+- case DSO_CONREJECT:
+- return -ENOPROTOOPT;
+-
+ case DSO_MAXWINDOW:
+ if (r_len > sizeof(unsigned long))
+ r_len = sizeof(unsigned long);
+@@ -1629,6 +1626,13 @@ static int __dn_getsockopt(struct socket *sock, int level,int optname, char __us
+ r_len = sizeof(unsigned char);
+ r_data = &scp->info_rem;
+ break;
++
++ case DSO_STREAM:
++ case DSO_SEQPACKET:
++ case DSO_CONACCEPT:
++ case DSO_CONREJECT:
++ default:
++ return -ENOPROTOOPT;
+ }
+
+ if (r_data) {
+diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
+index a7e74fbf2ce6..24b4174a84bf 100644
+--- a/net/ipv4/arp.c
++++ b/net/ipv4/arp.c
+@@ -221,11 +221,16 @@ static bool arp_key_eq(const struct neighbour *neigh, const void *pkey)
+
+ static int arp_constructor(struct neighbour *neigh)
+ {
+- __be32 addr = *(__be32 *)neigh->primary_key;
++ __be32 addr;
+ struct net_device *dev = neigh->dev;
+ struct in_device *in_dev;
+ struct neigh_parms *parms;
++ u32 inaddr_any = INADDR_ANY;
+
++ if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT))
++ memcpy(neigh->primary_key, &inaddr_any, arp_tbl.key_len);
++
++ addr = *(__be32 *)neigh->primary_key;
+ rcu_read_lock();
+ in_dev = __in_dev_get_rcu(dev);
+ if (!in_dev) {
+diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
+index a57056d87a43..1d2fba4aeeb2 100644
+--- a/net/ipv4/devinet.c
++++ b/net/ipv4/devinet.c
+@@ -1359,7 +1359,7 @@ skip:
+
+ static bool inetdev_valid_mtu(unsigned int mtu)
+ {
+- return mtu >= 68;
++ return mtu >= IPV4_MIN_MTU;
+ }
+
+ static void inetdev_send_gratuitous_arp(struct net_device *dev,
+diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
+index a8db70b7fe45..5095491e6141 100644
+--- a/net/ipv4/fib_frontend.c
++++ b/net/ipv4/fib_frontend.c
+@@ -1181,7 +1181,7 @@ fail:
+
+ static void ip_fib_net_exit(struct net *net)
+ {
+- unsigned int i;
++ int i;
+
+ rtnl_lock();
+ #ifdef CONFIG_IP_MULTIPLE_TABLES
+@@ -1189,7 +1189,12 @@ static void ip_fib_net_exit(struct net *net)
+ RCU_INIT_POINTER(net->ipv4.fib_main, NULL);
+ RCU_INIT_POINTER(net->ipv4.fib_default, NULL);
+ #endif
+- for (i = 0; i < FIB_TABLE_HASHSZ; i++) {
++ /* Destroy the tables in reverse order to guarantee that the
++ * local table, ID 255, is destroyed before the main table, ID
++ * 254. This is necessary as the local table may contain
++ * references to data contained in the main table.
++ */
++ for (i = FIB_TABLE_HASHSZ - 1; i >= 0; i--) {
+ struct hlist_head *head = &net->ipv4.fib_table_hash[i];
+ struct hlist_node *tmp;
+ struct fib_table *tb;
+diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
+index e2d3d62297ec..c17485bcb18a 100644
+--- a/net/ipv4/igmp.c
++++ b/net/ipv4/igmp.c
+@@ -89,6 +89,7 @@
+ #include <linux/rtnetlink.h>
+ #include <linux/times.h>
+ #include <linux/pkt_sched.h>
++#include <linux/byteorder/generic.h>
+
+ #include <net/net_namespace.h>
+ #include <net/arp.h>
+@@ -319,6 +320,23 @@ igmp_scount(struct ip_mc_list *pmc, int type, int gdeleted, int sdeleted)
+ return scount;
+ }
+
++/* source address selection per RFC 3376 section 4.2.13 */
++static __be32 igmpv3_get_srcaddr(struct net_device *dev,
++ const struct flowi4 *fl4)
++{
++ struct in_device *in_dev = __in_dev_get_rcu(dev);
++
++ if (!in_dev)
++ return htonl(INADDR_ANY);
++
++ for_ifa(in_dev) {
++ if (fl4->saddr == ifa->ifa_local)
++ return fl4->saddr;
++ } endfor_ifa(in_dev);
++
++ return htonl(INADDR_ANY);
++}
++
+ static struct sk_buff *igmpv3_newpack(struct net_device *dev, unsigned int mtu)
+ {
+ struct sk_buff *skb;
+@@ -366,7 +384,11 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, unsigned int mtu)
+ pip->frag_off = htons(IP_DF);
+ pip->ttl = 1;
+ pip->daddr = fl4.daddr;
+- pip->saddr = fl4.saddr;
++
++ rcu_read_lock();
++ pip->saddr = igmpv3_get_srcaddr(dev, &fl4);
++ rcu_read_unlock();
++
+ pip->protocol = IPPROTO_IGMP;
+ pip->tot_len = 0; /* filled in later */
+ ip_select_ident(net, skb, NULL);
+@@ -402,16 +424,17 @@ static int grec_size(struct ip_mc_list *pmc, int type, int gdel, int sdel)
+ }
+
+ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ip_mc_list *pmc,
+- int type, struct igmpv3_grec **ppgr)
++ int type, struct igmpv3_grec **ppgr, unsigned int mtu)
+ {
+ struct net_device *dev = pmc->interface->dev;
+ struct igmpv3_report *pih;
+ struct igmpv3_grec *pgr;
+
+- if (!skb)
+- skb = igmpv3_newpack(dev, dev->mtu);
+- if (!skb)
+- return NULL;
++ if (!skb) {
++ skb = igmpv3_newpack(dev, mtu);
++ if (!skb)
++ return NULL;
++ }
+ pgr = (struct igmpv3_grec *)skb_put(skb, sizeof(struct igmpv3_grec));
+ pgr->grec_type = type;
+ pgr->grec_auxwords = 0;
+@@ -433,10 +456,15 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc,
+ struct igmpv3_grec *pgr = NULL;
+ struct ip_sf_list *psf, *psf_next, *psf_prev, **psf_list;
+ int scount, stotal, first, isquery, truncate;
++ unsigned int mtu;
+
+ if (pmc->multiaddr == IGMP_ALL_HOSTS)
+ return skb;
+
++ mtu = READ_ONCE(dev->mtu);
++ if (mtu < IPV4_MIN_MTU)
++ return skb;
++
+ isquery = type == IGMPV3_MODE_IS_INCLUDE ||
+ type == IGMPV3_MODE_IS_EXCLUDE;
+ truncate = type == IGMPV3_MODE_IS_EXCLUDE ||
+@@ -457,7 +485,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc,
+ AVAILABLE(skb) < grec_size(pmc, type, gdeleted, sdeleted)) {
+ if (skb)
+ igmpv3_sendpack(skb);
+- skb = igmpv3_newpack(dev, dev->mtu);
++ skb = igmpv3_newpack(dev, mtu);
+ }
+ }
+ first = 1;
+@@ -484,12 +512,12 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc,
+ pgr->grec_nsrcs = htons(scount);
+ if (skb)
+ igmpv3_sendpack(skb);
+- skb = igmpv3_newpack(dev, dev->mtu);
++ skb = igmpv3_newpack(dev, mtu);
+ first = 1;
+ scount = 0;
+ }
+ if (first) {
+- skb = add_grhead(skb, pmc, type, &pgr);
++ skb = add_grhead(skb, pmc, type, &pgr, mtu);
+ first = 0;
+ }
+ if (!skb)
+@@ -523,7 +551,7 @@ empty_source:
+ igmpv3_sendpack(skb);
+ skb = NULL; /* add_grhead will get a new one */
+ }
+- skb = add_grhead(skb, pmc, type, &pgr);
++ skb = add_grhead(skb, pmc, type, &pgr, mtu);
+ }
+ }
+ if (pgr)
+diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
+index b6c7bdea4853..67c1333422a4 100644
+--- a/net/ipv4/ip_sockglue.c
++++ b/net/ipv4/ip_sockglue.c
+@@ -1203,11 +1203,8 @@ int ip_setsockopt(struct sock *sk, int level,
+ if (err == -ENOPROTOOPT && optname != IP_HDRINCL &&
+ optname != IP_IPSEC_POLICY &&
+ optname != IP_XFRM_POLICY &&
+- !ip_mroute_opt(optname)) {
+- lock_sock(sk);
++ !ip_mroute_opt(optname))
+ err = nf_setsockopt(sk, PF_INET, optname, optval, optlen);
+- release_sock(sk);
+- }
+ #endif
+ return err;
+ }
+@@ -1232,12 +1229,9 @@ int compat_ip_setsockopt(struct sock *sk, int level, int optname,
+ if (err == -ENOPROTOOPT && optname != IP_HDRINCL &&
+ optname != IP_IPSEC_POLICY &&
+ optname != IP_XFRM_POLICY &&
+- !ip_mroute_opt(optname)) {
+- lock_sock(sk);
+- err = compat_nf_setsockopt(sk, PF_INET, optname,
+- optval, optlen);
+- release_sock(sk);
+- }
++ !ip_mroute_opt(optname))
++ err = compat_nf_setsockopt(sk, PF_INET, optname, optval,
++ optlen);
+ #endif
+ return err;
+ }
+@@ -1497,10 +1491,7 @@ int ip_getsockopt(struct sock *sk, int level,
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+- lock_sock(sk);
+- err = nf_getsockopt(sk, PF_INET, optname, optval,
+- &len);
+- release_sock(sk);
++ err = nf_getsockopt(sk, PF_INET, optname, optval, &len);
+ if (err >= 0)
+ err = put_user(len, optlen);
+ return err;
+@@ -1532,9 +1523,7 @@ int compat_ip_getsockopt(struct sock *sk, int level, int optname,
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+- lock_sock(sk);
+ err = compat_nf_getsockopt(sk, PF_INET, optname, optval, &len);
+- release_sock(sk);
+ if (err >= 0)
+ err = put_user(len, optlen);
+ return err;
+diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
+index 35080a708b59..169bf7d1d8ca 100644
+--- a/net/ipv4/ip_tunnel.c
++++ b/net/ipv4/ip_tunnel.c
+@@ -393,8 +393,8 @@ static int ip_tunnel_bind_dev(struct net_device *dev)
+ dev->needed_headroom = t_hlen + hlen;
+ mtu -= (dev->hard_header_len + t_hlen);
+
+- if (mtu < 68)
+- mtu = 68;
++ if (mtu < IPV4_MIN_MTU)
++ mtu = IPV4_MIN_MTU;
+
+ return mtu;
+ }
+diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
+index 8e7328c6a390..6389616ccc3f 100644
+--- a/net/ipv4/ipconfig.c
++++ b/net/ipv4/ipconfig.c
+@@ -148,7 +148,11 @@ static char vendor_class_identifier[253] __initdata;
+
+ /* Persistent data: */
+
++#ifdef IPCONFIG_DYNAMIC
+ static int ic_proto_used; /* Protocol used, if any */
++#else
++#define ic_proto_used 0
++#endif
+ static __be32 ic_nameservers[CONF_NAMESERVERS_MAX]; /* DNS Server IP addresses */
+ static u8 ic_domain[64]; /* DNS (not NIS) domain name */
+
+diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
+index ebf5821caefb..7510a851d316 100644
+--- a/net/ipv4/netfilter/arp_tables.c
++++ b/net/ipv4/netfilter/arp_tables.c
+@@ -1330,8 +1330,8 @@ static int translate_compat_table(struct xt_table_info **pinfo,
+
+ newinfo->number = compatr->num_entries;
+ for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
+- newinfo->hook_entry[i] = info->hook_entry[i];
+- newinfo->underflow[i] = info->underflow[i];
++ newinfo->hook_entry[i] = compatr->hook_entry[i];
++ newinfo->underflow[i] = compatr->underflow[i];
+ }
+ entry1 = newinfo->entries[raw_smp_processor_id()];
+ pos = entry1;
+diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
+index 771ab3d01ad3..d098013855f0 100644
+--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
++++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
+@@ -365,7 +365,7 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
+ struct ipt_clusterip_tgt_info *cipinfo = par->targinfo;
+ const struct ipt_entry *e = par->entryinfo;
+ struct clusterip_config *config;
+- int ret;
++ int ret, i;
+
+ if (cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP &&
+ cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT &&
+@@ -379,8 +379,18 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
+ pr_info("Please specify destination IP\n");
+ return -EINVAL;
+ }
+-
+- /* FIXME: further sanity checks */
++ if (cipinfo->num_local_nodes > ARRAY_SIZE(cipinfo->local_nodes)) {
++ pr_info("bad num_local_nodes %u\n", cipinfo->num_local_nodes);
++ return -EINVAL;
++ }
++ for (i = 0; i < cipinfo->num_local_nodes; i++) {
++ if (cipinfo->local_nodes[i] - 1 >=
++ sizeof(config->local_nodes) * 8) {
++ pr_info("bad local_nodes[%d] %u\n",
++ i, cipinfo->local_nodes[i]);
++ return -EINVAL;
++ }
++ }
+
+ config = clusterip_config_find_get(par->net, e->ip.dst.s_addr, 1);
+ if (!config) {
+diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+index 30ad9554b5e9..406d69f033ac 100644
+--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
++++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+@@ -261,15 +261,19 @@ getorigdst(struct sock *sk, int optval, void __user *user, int *len)
+ struct nf_conntrack_tuple tuple;
+
+ memset(&tuple, 0, sizeof(tuple));
++
++ lock_sock(sk);
+ tuple.src.u3.ip = inet->inet_rcv_saddr;
+ tuple.src.u.tcp.port = inet->inet_sport;
+ tuple.dst.u3.ip = inet->inet_daddr;
+ tuple.dst.u.tcp.port = inet->inet_dport;
+ tuple.src.l3num = PF_INET;
+ tuple.dst.protonum = sk->sk_protocol;
++ release_sock(sk);
+
+ /* We only do TCP and SCTP at the moment: is there a better way? */
+- if (sk->sk_protocol != IPPROTO_TCP && sk->sk_protocol != IPPROTO_SCTP) {
++ if (tuple.dst.protonum != IPPROTO_TCP &&
++ tuple.dst.protonum != IPPROTO_SCTP) {
+ pr_debug("SO_ORIGINAL_DST: Not a TCP/SCTP socket\n");
+ return -ENOPROTOOPT;
+ }
+diff --git a/net/ipv4/netfilter/nf_nat_snmp_basic.c b/net/ipv4/netfilter/nf_nat_snmp_basic.c
+index cc626e1b06d3..64a8bbc06f23 100644
+--- a/net/ipv4/netfilter/nf_nat_snmp_basic.c
++++ b/net/ipv4/netfilter/nf_nat_snmp_basic.c
+@@ -1260,16 +1260,6 @@ static const struct nf_conntrack_expect_policy snmp_exp_policy = {
+ .timeout = 180,
+ };
+
+-static struct nf_conntrack_helper snmp_helper __read_mostly = {
+- .me = THIS_MODULE,
+- .help = help,
+- .expect_policy = &snmp_exp_policy,
+- .name = "snmp",
+- .tuple.src.l3num = AF_INET,
+- .tuple.src.u.udp.port = cpu_to_be16(SNMP_PORT),
+- .tuple.dst.protonum = IPPROTO_UDP,
+-};
+-
+ static struct nf_conntrack_helper snmp_trap_helper __read_mostly = {
+ .me = THIS_MODULE,
+ .help = help,
+@@ -1288,17 +1278,10 @@ static struct nf_conntrack_helper snmp_trap_helper __read_mostly = {
+
+ static int __init nf_nat_snmp_basic_init(void)
+ {
+- int ret = 0;
+-
+ BUG_ON(nf_nat_snmp_hook != NULL);
+ RCU_INIT_POINTER(nf_nat_snmp_hook, help);
+
+- ret = nf_conntrack_helper_register(&snmp_trap_helper);
+- if (ret < 0) {
+- nf_conntrack_helper_unregister(&snmp_helper);
+- return ret;
+- }
+- return ret;
++ return nf_conntrack_helper_register(&snmp_trap_helper);
+ }
+
+ static void __exit nf_nat_snmp_basic_fini(void)
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index a1de8300cfce..94a4b28e5da6 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -2137,6 +2137,9 @@ adjudge_to_death:
+ tcp_send_active_reset(sk, GFP_ATOMIC);
+ NET_INC_STATS_BH(sock_net(sk),
+ LINUX_MIB_TCPABORTONMEMORY);
++ } else if (!check_net(sock_net(sk))) {
++ /* Not possible to send reset; just close */
++ tcp_set_state(sk, TCP_CLOSE);
+ }
+ }
+
+@@ -2232,6 +2235,12 @@ int tcp_disconnect(struct sock *sk, int flags)
+
+ WARN_ON(inet->inet_num && !icsk->icsk_bind_hash);
+
++ if (sk->sk_frag.page) {
++ put_page(sk->sk_frag.page);
++ sk->sk_frag.page = NULL;
++ sk->sk_frag.offset = 0;
++ }
++
+ sk->sk_error_report(sk);
+ return err;
+ }
+diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
+index 2923f7f7932a..38e9dc5b735d 100644
+--- a/net/ipv4/tcp_ipv4.c
++++ b/net/ipv4/tcp_ipv4.c
+@@ -814,7 +814,7 @@ static void tcp_v4_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+ tcp_time_stamp,
+ req->ts_recent,
+ 0,
+- tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&ip_hdr(skb)->daddr,
++ tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&ip_hdr(skb)->saddr,
+ AF_INET),
+ inet_rsk(req)->no_srccheck ? IP_REPLY_ARG_NOSRCCHECK : 0,
+ ip_hdr(skb)->tos);
+diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
+index f8c6b2343301..4a3f230ef91b 100644
+--- a/net/ipv4/tcp_timer.c
++++ b/net/ipv4/tcp_timer.c
+@@ -46,11 +46,19 @@ static void tcp_write_err(struct sock *sk)
+ * to prevent DoS attacks. It is called when a retransmission timeout
+ * or zero probe timeout occurs on orphaned socket.
+ *
++ * Also close if our net namespace is exiting; in that case there is no
++ * hope of ever communicating again since all netns interfaces are already
++ * down (or about to be down), and we need to release our dst references,
++ * which have been moved to the netns loopback interface, so the namespace
++ * can finish exiting. This condition is only possible if we are a kernel
++ * socket, as those do not hold references to the namespace.
++ *
+ * Criteria is still not confirmed experimentally and may change.
+ * We kill the socket, if:
+ * 1. If number of orphaned sockets exceeds an administratively configured
+ * limit.
+ * 2. If we have strong memory pressure.
++ * 3. If our net namespace is exiting.
+ */
+ static int tcp_out_of_resources(struct sock *sk, bool do_reset)
+ {
+@@ -79,6 +87,13 @@ static int tcp_out_of_resources(struct sock *sk, bool do_reset)
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONMEMORY);
+ return 1;
+ }
++
++ if (!check_net(sock_net(sk))) {
++ /* Not possible to send reset; just close */
++ tcp_done(sk);
++ return 1;
++ }
++
+ return 0;
+ }
+
+diff --git a/net/ipv4/tcp_vegas.c b/net/ipv4/tcp_vegas.c
+index a6cea1d5e20d..33c0879612f5 100644
+--- a/net/ipv4/tcp_vegas.c
++++ b/net/ipv4/tcp_vegas.c
+@@ -158,7 +158,7 @@ EXPORT_SYMBOL_GPL(tcp_vegas_cwnd_event);
+
+ static inline u32 tcp_vegas_ssthresh(struct tcp_sock *tp)
+ {
+- return min(tp->snd_ssthresh, tp->snd_cwnd-1);
++ return min(tp->snd_ssthresh, tp->snd_cwnd);
+ }
+
+ static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack, u32 acked)
+diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
+index 7a6317671d32..97397a3df219 100644
+--- a/net/ipv6/ip6_output.c
++++ b/net/ipv6/ip6_output.c
+@@ -1217,14 +1217,16 @@ static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
+ v6_cork->tclass = tclass;
+ if (rt->dst.flags & DST_XFRM_TUNNEL)
+ mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ?
+- rt->dst.dev->mtu : dst_mtu(&rt->dst);
++ READ_ONCE(rt->dst.dev->mtu) : dst_mtu(&rt->dst);
+ else
+ mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ?
+- rt->dst.dev->mtu : dst_mtu(rt->dst.path);
++ READ_ONCE(rt->dst.dev->mtu) : dst_mtu(rt->dst.path);
+ if (np->frag_size < mtu) {
+ if (np->frag_size)
+ mtu = np->frag_size;
+ }
++ if (mtu < IPV6_MIN_MTU)
++ return -EINVAL;
+ cork->base.fragsize = mtu;
+ if (dst_allfrag(rt->dst.path))
+ cork->base.flags |= IPCORK_ALLFRAG;
+@@ -1757,10 +1759,13 @@ struct sk_buff *ip6_make_skb(struct sock *sk,
+ cork.base.flags = 0;
+ cork.base.addr = 0;
+ cork.base.opt = NULL;
++ cork.base.dst = NULL;
+ v6_cork.opt = NULL;
+ err = ip6_setup_cork(sk, &cork, &v6_cork, hlimit, tclass, opt, rt, fl6);
+- if (err)
++ if (err) {
++ ip6_cork_release(&cork, &v6_cork);
+ return ERR_PTR(err);
++ }
+
+ if (dontfrag < 0)
+ dontfrag = inet6_sk(sk)->dontfrag;
+diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
+index 1c4db0fe7f88..672dd08dc3dd 100644
+--- a/net/ipv6/ip6mr.c
++++ b/net/ipv6/ip6mr.c
+@@ -496,6 +496,7 @@ static void *ipmr_mfc_seq_start(struct seq_file *seq, loff_t *pos)
+ return ERR_PTR(-ENOENT);
+
+ it->mrt = mrt;
++ it->cache = NULL;
+ return *pos ? ipmr_mfc_seq_idx(net, seq->private, *pos - 1)
+ : SEQ_START_TOKEN;
+ }
+diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
+index 4449ad1f8114..2ad727bba3a5 100644
+--- a/net/ipv6/ipv6_sockglue.c
++++ b/net/ipv6/ipv6_sockglue.c
+@@ -896,12 +896,8 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname,
+ #ifdef CONFIG_NETFILTER
+ /* we need to exclude all possible ENOPROTOOPTs except default case */
+ if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
+- optname != IPV6_XFRM_POLICY) {
+- lock_sock(sk);
+- err = nf_setsockopt(sk, PF_INET6, optname, optval,
+- optlen);
+- release_sock(sk);
+- }
++ optname != IPV6_XFRM_POLICY)
++ err = nf_setsockopt(sk, PF_INET6, optname, optval, optlen);
+ #endif
+ return err;
+ }
+@@ -931,12 +927,9 @@ int compat_ipv6_setsockopt(struct sock *sk, int level, int optname,
+ #ifdef CONFIG_NETFILTER
+ /* we need to exclude all possible ENOPROTOOPTs except default case */
+ if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
+- optname != IPV6_XFRM_POLICY) {
+- lock_sock(sk);
+- err = compat_nf_setsockopt(sk, PF_INET6, optname,
+- optval, optlen);
+- release_sock(sk);
+- }
++ optname != IPV6_XFRM_POLICY)
++ err = compat_nf_setsockopt(sk, PF_INET6, optname, optval,
++ optlen);
+ #endif
+ return err;
+ }
+@@ -1338,10 +1331,7 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+- lock_sock(sk);
+- err = nf_getsockopt(sk, PF_INET6, optname, optval,
+- &len);
+- release_sock(sk);
++ err = nf_getsockopt(sk, PF_INET6, optname, optval, &len);
+ if (err >= 0)
+ err = put_user(len, optlen);
+ }
+@@ -1380,10 +1370,7 @@ int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+- lock_sock(sk);
+- err = compat_nf_getsockopt(sk, PF_INET6,
+- optname, optval, &len);
+- release_sock(sk);
++ err = compat_nf_getsockopt(sk, PF_INET6, optname, optval, &len);
+ if (err >= 0)
+ err = put_user(len, optlen);
+ }
+diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
+index 9a63110b6548..47de89f57a80 100644
+--- a/net/ipv6/mcast.c
++++ b/net/ipv6/mcast.c
+@@ -1668,16 +1668,16 @@ static int grec_size(struct ifmcaddr6 *pmc, int type, int gdel, int sdel)
+ }
+
+ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc,
+- int type, struct mld2_grec **ppgr)
++ int type, struct mld2_grec **ppgr, unsigned int mtu)
+ {
+- struct net_device *dev = pmc->idev->dev;
+ struct mld2_report *pmr;
+ struct mld2_grec *pgr;
+
+- if (!skb)
+- skb = mld_newpack(pmc->idev, dev->mtu);
+- if (!skb)
+- return NULL;
++ if (!skb) {
++ skb = mld_newpack(pmc->idev, mtu);
++ if (!skb)
++ return NULL;
++ }
+ pgr = (struct mld2_grec *)skb_put(skb, sizeof(struct mld2_grec));
+ pgr->grec_type = type;
+ pgr->grec_auxwords = 0;
+@@ -1700,10 +1700,15 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
+ struct mld2_grec *pgr = NULL;
+ struct ip6_sf_list *psf, *psf_next, *psf_prev, **psf_list;
+ int scount, stotal, first, isquery, truncate;
++ unsigned int mtu;
+
+ if (pmc->mca_flags & MAF_NOREPORT)
+ return skb;
+
++ mtu = READ_ONCE(dev->mtu);
++ if (mtu < IPV6_MIN_MTU)
++ return skb;
++
+ isquery = type == MLD2_MODE_IS_INCLUDE ||
+ type == MLD2_MODE_IS_EXCLUDE;
+ truncate = type == MLD2_MODE_IS_EXCLUDE ||
+@@ -1724,7 +1729,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
+ AVAILABLE(skb) < grec_size(pmc, type, gdeleted, sdeleted)) {
+ if (skb)
+ mld_sendpack(skb);
+- skb = mld_newpack(idev, dev->mtu);
++ skb = mld_newpack(idev, mtu);
+ }
+ }
+ first = 1;
+@@ -1751,12 +1756,12 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
+ pgr->grec_nsrcs = htons(scount);
+ if (skb)
+ mld_sendpack(skb);
+- skb = mld_newpack(idev, dev->mtu);
++ skb = mld_newpack(idev, mtu);
+ first = 1;
+ scount = 0;
+ }
+ if (first) {
+- skb = add_grhead(skb, pmc, type, &pgr);
++ skb = add_grhead(skb, pmc, type, &pgr, mtu);
+ first = 0;
+ }
+ if (!skb)
+@@ -1790,7 +1795,7 @@ empty_source:
+ mld_sendpack(skb);
+ skb = NULL; /* add_grhead will get a new one */
+ }
+- skb = add_grhead(skb, pmc, type, &pgr);
++ skb = add_grhead(skb, pmc, type, &pgr, mtu);
+ }
+ }
+ if (pgr)
+diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+index 4ba0c34c627b..6bb16657db3a 100644
+--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
++++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+@@ -232,20 +232,27 @@ static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {
+ static int
+ ipv6_getorigdst(struct sock *sk, int optval, void __user *user, int *len)
+ {
+- const struct inet_sock *inet = inet_sk(sk);
++ struct nf_conntrack_tuple tuple = { .src.l3num = NFPROTO_IPV6 };
+ const struct ipv6_pinfo *inet6 = inet6_sk(sk);
++ const struct inet_sock *inet = inet_sk(sk);
+ const struct nf_conntrack_tuple_hash *h;
+ struct sockaddr_in6 sin6;
+- struct nf_conntrack_tuple tuple = { .src.l3num = NFPROTO_IPV6 };
+ struct nf_conn *ct;
++ __be32 flow_label;
++ int bound_dev_if;
+
++ lock_sock(sk);
+ tuple.src.u3.in6 = sk->sk_v6_rcv_saddr;
+ tuple.src.u.tcp.port = inet->inet_sport;
+ tuple.dst.u3.in6 = sk->sk_v6_daddr;
+ tuple.dst.u.tcp.port = inet->inet_dport;
+ tuple.dst.protonum = sk->sk_protocol;
++ bound_dev_if = sk->sk_bound_dev_if;
++ flow_label = inet6->flow_label;
++ release_sock(sk);
+
+- if (sk->sk_protocol != IPPROTO_TCP && sk->sk_protocol != IPPROTO_SCTP)
++ if (tuple.dst.protonum != IPPROTO_TCP &&
++ tuple.dst.protonum != IPPROTO_SCTP)
+ return -ENOPROTOOPT;
+
+ if (*len < 0 || (unsigned int) *len < sizeof(sin6))
+@@ -263,14 +270,13 @@ ipv6_getorigdst(struct sock *sk, int optval, void __user *user, int *len)
+
+ sin6.sin6_family = AF_INET6;
+ sin6.sin6_port = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u.tcp.port;
+- sin6.sin6_flowinfo = inet6->flow_label & IPV6_FLOWINFO_MASK;
++ sin6.sin6_flowinfo = flow_label & IPV6_FLOWINFO_MASK;
+ memcpy(&sin6.sin6_addr,
+ &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.in6,
+ sizeof(sin6.sin6_addr));
+
+ nf_ct_put(ct);
+- sin6.sin6_scope_id = ipv6_iface_scope_id(&sin6.sin6_addr,
+- sk->sk_bound_dev_if);
++ sin6.sin6_scope_id = ipv6_iface_scope_id(&sin6.sin6_addr, bound_dev_if);
+ return copy_to_user(user, &sin6, sizeof(sin6)) ? -EFAULT : 0;
+ }
+
+diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
+index 2f0f1b415fbe..9f274781ba57 100644
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -940,7 +940,7 @@ static void tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+ tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
+ tcp_rsk(req)->rcv_nxt, req->rcv_wnd,
+ tcp_time_stamp, req->ts_recent, sk->sk_bound_dev_if,
+- tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr),
++ tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->saddr),
+ 0, 0);
+ }
+
+diff --git a/net/key/af_key.c b/net/key/af_key.c
+index 39c78c9e1c68..354c43a1c43d 100644
+--- a/net/key/af_key.c
++++ b/net/key/af_key.c
+@@ -401,6 +401,11 @@ static int verify_address_len(const void *p)
+ #endif
+ int len;
+
++ if (sp->sadb_address_len <
++ DIV_ROUND_UP(sizeof(*sp) + offsetofend(typeof(*addr), sa_family),
++ sizeof(uint64_t)))
++ return -EINVAL;
++
+ switch (addr->sa_family) {
+ case AF_INET:
+ len = DIV_ROUND_UP(sizeof(*sp) + sizeof(*sin), sizeof(uint64_t));
+@@ -511,6 +516,9 @@ static int parse_exthdrs(struct sk_buff *skb, const struct sadb_msg *hdr, void *
+ uint16_t ext_type;
+ int ext_len;
+
++ if (len < sizeof(*ehdr))
++ return -EINVAL;
++
+ ext_len = ehdr->sadb_ext_len;
+ ext_len *= sizeof(uint64_t);
+ ext_type = ehdr->sadb_ext_type;
+diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
+index 37e0aa4891a2..cd85cbf9bf39 100644
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -2857,7 +2857,7 @@ cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
+ }
+ if (beacon->probe_resp_len) {
+ new_beacon->probe_resp_len = beacon->probe_resp_len;
+- beacon->probe_resp = pos;
++ new_beacon->probe_resp = pos;
+ memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
+ pos += beacon->probe_resp_len;
+ }
+diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
+index 214e63b84e5c..4efc60236cdb 100644
+--- a/net/mac80211/mesh_hwmp.c
++++ b/net/mac80211/mesh_hwmp.c
+@@ -763,7 +763,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
+ struct mesh_path *mpath;
+ u8 ttl, flags, hopcount;
+ const u8 *orig_addr;
+- u32 orig_sn, metric, metric_txsta, interval;
++ u32 orig_sn, new_metric, orig_metric, last_hop_metric, interval;
+ bool root_is_gate;
+
+ ttl = rann->rann_ttl;
+@@ -774,7 +774,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
+ interval = le32_to_cpu(rann->rann_interval);
+ hopcount = rann->rann_hopcount;
+ hopcount++;
+- metric = le32_to_cpu(rann->rann_metric);
++ orig_metric = le32_to_cpu(rann->rann_metric);
+
+ /* Ignore our own RANNs */
+ if (ether_addr_equal(orig_addr, sdata->vif.addr))
+@@ -791,7 +791,10 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
+ return;
+ }
+
+- metric_txsta = airtime_link_metric_get(local, sta);
++ last_hop_metric = airtime_link_metric_get(local, sta);
++ new_metric = orig_metric + last_hop_metric;
++ if (new_metric < orig_metric)
++ new_metric = MAX_METRIC;
+
+ mpath = mesh_path_lookup(sdata, orig_addr);
+ if (!mpath) {
+@@ -804,7 +807,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
+ }
+
+ if (!(SN_LT(mpath->sn, orig_sn)) &&
+- !(mpath->sn == orig_sn && metric < mpath->rann_metric)) {
++ !(mpath->sn == orig_sn && new_metric < mpath->rann_metric)) {
+ rcu_read_unlock();
+ return;
+ }
+@@ -822,7 +825,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
+ }
+
+ mpath->sn = orig_sn;
+- mpath->rann_metric = metric + metric_txsta;
++ mpath->rann_metric = new_metric;
+ mpath->is_root = true;
+ /* Recording RANNs sender address to send individually
+ * addressed PREQs destined for root mesh STA */
+@@ -842,7 +845,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
+ mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr,
+ orig_sn, 0, NULL, 0, broadcast_addr,
+ hopcount, ttl, interval,
+- metric + metric_txsta, 0, sdata);
++ new_metric, 0, sdata);
+ }
+
+ rcu_read_unlock();
+diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
+index bc3f791845aa..e951ca98757e 100644
+--- a/net/netfilter/nf_conntrack_core.c
++++ b/net/netfilter/nf_conntrack_core.c
+@@ -695,6 +695,7 @@ nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple,
+ * least once for the stats anyway.
+ */
+ rcu_read_lock_bh();
++ begin:
+ hlist_nulls_for_each_entry_rcu(h, n, &net->ct.hash[hash], hnnode) {
+ ct = nf_ct_tuplehash_to_ctrack(h);
+ if (ct != ignored_conntrack &&
+@@ -706,6 +707,12 @@ nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple,
+ }
+ NF_CT_STAT_INC(net, searched);
+ }
++
++ if (get_nulls_value(n) != hash) {
++ NF_CT_STAT_INC(net, search_restart);
++ goto begin;
++ }
++
+ rcu_read_unlock_bh();
+
+ return 0;
+diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
+index 4f4c88d70a8f..cba342b37b62 100644
+--- a/net/netfilter/nf_conntrack_expect.c
++++ b/net/netfilter/nf_conntrack_expect.c
+@@ -557,7 +557,7 @@ static int exp_seq_show(struct seq_file *s, void *v)
+ helper = rcu_dereference(nfct_help(expect->master)->helper);
+ if (helper) {
+ seq_printf(s, "%s%s", expect->flags ? " " : "", helper->name);
+- if (helper->expect_policy[expect->class].name)
++ if (helper->expect_policy[expect->class].name[0])
+ seq_printf(s, "/%s",
+ helper->expect_policy[expect->class].name);
+ }
+diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
+index 885b4aba3695..1665c2159e4b 100644
+--- a/net/netfilter/nf_conntrack_sip.c
++++ b/net/netfilter/nf_conntrack_sip.c
+@@ -1434,9 +1434,12 @@ static int process_sip_request(struct sk_buff *skb, unsigned int protoff,
+ handler = &sip_handlers[i];
+ if (handler->request == NULL)
+ continue;
+- if (*datalen < handler->len ||
++ if (*datalen < handler->len + 2 ||
+ strncasecmp(*dptr, handler->method, handler->len))
+ continue;
++ if ((*dptr)[handler->len] != ' ' ||
++ !isalpha((*dptr)[handler->len+1]))
++ continue;
+
+ if (ct_sip_get_header(ct, *dptr, 0, *datalen, SIP_HDR_CSEQ,
+ &matchoff, &matchlen) <= 0) {
+diff --git a/net/netfilter/nfnetlink_cthelper.c b/net/netfilter/nfnetlink_cthelper.c
+index 6d10002d23f8..ac143ae4f7b6 100644
+--- a/net/netfilter/nfnetlink_cthelper.c
++++ b/net/netfilter/nfnetlink_cthelper.c
+@@ -17,6 +17,7 @@
+ #include <linux/types.h>
+ #include <linux/list.h>
+ #include <linux/errno.h>
++#include <linux/capability.h>
+ #include <net/netlink.h>
+ #include <net/sock.h>
+
+@@ -32,6 +33,13 @@ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
+ MODULE_DESCRIPTION("nfnl_cthelper: User-space connection tracking helpers");
+
++struct nfnl_cthelper {
++ struct list_head list;
++ struct nf_conntrack_helper helper;
++};
++
++static LIST_HEAD(nfnl_cthelper_list);
++
+ static int
+ nfnl_userspace_cthelper(struct sk_buff *skb, unsigned int protoff,
+ struct nf_conn *ct, enum ip_conntrack_info ctinfo)
+@@ -205,18 +213,20 @@ nfnl_cthelper_create(const struct nlattr * const tb[],
+ struct nf_conntrack_tuple *tuple)
+ {
+ struct nf_conntrack_helper *helper;
++ struct nfnl_cthelper *nfcth;
+ int ret;
+
+ if (!tb[NFCTH_TUPLE] || !tb[NFCTH_POLICY] || !tb[NFCTH_PRIV_DATA_LEN])
+ return -EINVAL;
+
+- helper = kzalloc(sizeof(struct nf_conntrack_helper), GFP_KERNEL);
+- if (helper == NULL)
++ nfcth = kzalloc(sizeof(*nfcth), GFP_KERNEL);
++ if (nfcth == NULL)
+ return -ENOMEM;
++ helper = &nfcth->helper;
+
+ ret = nfnl_cthelper_parse_expect_policy(helper, tb[NFCTH_POLICY]);
+ if (ret < 0)
+- goto err;
++ goto err1;
+
+ strncpy(helper->name, nla_data(tb[NFCTH_NAME]), NF_CT_HELPER_NAME_LEN);
+ helper->data_len = ntohl(nla_get_be32(tb[NFCTH_PRIV_DATA_LEN]));
+@@ -247,14 +257,100 @@ nfnl_cthelper_create(const struct nlattr * const tb[],
+
+ ret = nf_conntrack_helper_register(helper);
+ if (ret < 0)
+- goto err;
++ goto err2;
+
++ list_add_tail(&nfcth->list, &nfnl_cthelper_list);
+ return 0;
+-err:
+- kfree(helper);
++err2:
++ kfree(helper->expect_policy);
++err1:
++ kfree(nfcth);
+ return ret;
+ }
+
++static int
++nfnl_cthelper_update_policy_one(const struct nf_conntrack_expect_policy *policy,
++ struct nf_conntrack_expect_policy *new_policy,
++ const struct nlattr *attr)
++{
++ struct nlattr *tb[NFCTH_POLICY_MAX + 1];
++ int err;
++
++ err = nla_parse_nested(tb, NFCTH_POLICY_MAX, attr,
++ nfnl_cthelper_expect_pol);
++ if (err < 0)
++ return err;
++
++ if (!tb[NFCTH_POLICY_NAME] ||
++ !tb[NFCTH_POLICY_EXPECT_MAX] ||
++ !tb[NFCTH_POLICY_EXPECT_TIMEOUT])
++ return -EINVAL;
++
++ if (nla_strcmp(tb[NFCTH_POLICY_NAME], policy->name))
++ return -EBUSY;
++
++ new_policy->max_expected =
++ ntohl(nla_get_be32(tb[NFCTH_POLICY_EXPECT_MAX]));
++ new_policy->timeout =
++ ntohl(nla_get_be32(tb[NFCTH_POLICY_EXPECT_TIMEOUT]));
++
++ return 0;
++}
++
++static int nfnl_cthelper_update_policy_all(struct nlattr *tb[],
++ struct nf_conntrack_helper *helper)
++{
++ struct nf_conntrack_expect_policy new_policy[helper->expect_class_max + 1];
++ struct nf_conntrack_expect_policy *policy;
++ int i, err;
++
++ /* Check first that all policy attributes are well-formed, so we don't
++ * leave things in inconsistent state on errors.
++ */
++ for (i = 0; i < helper->expect_class_max + 1; i++) {
++
++ if (!tb[NFCTH_POLICY_SET + i])
++ return -EINVAL;
++
++ err = nfnl_cthelper_update_policy_one(&helper->expect_policy[i],
++ &new_policy[i],
++ tb[NFCTH_POLICY_SET + i]);
++ if (err < 0)
++ return err;
++ }
++ /* Now we can safely update them. */
++ for (i = 0; i < helper->expect_class_max + 1; i++) {
++ policy = (struct nf_conntrack_expect_policy *)
++ &helper->expect_policy[i];
++ policy->max_expected = new_policy->max_expected;
++ policy->timeout = new_policy->timeout;
++ }
++
++ return 0;
++}
++
++static int nfnl_cthelper_update_policy(struct nf_conntrack_helper *helper,
++ const struct nlattr *attr)
++{
++ struct nlattr *tb[NFCTH_POLICY_SET_MAX + 1];
++ unsigned int class_max;
++ int err;
++
++ err = nla_parse_nested(tb, NFCTH_POLICY_SET_MAX, attr,
++ nfnl_cthelper_expect_policy_set);
++ if (err < 0)
++ return err;
++
++ if (!tb[NFCTH_POLICY_SET_NUM])
++ return -EINVAL;
++
++ class_max = ntohl(nla_get_be32(tb[NFCTH_POLICY_SET_NUM]));
++ if (helper->expect_class_max + 1 != class_max)
++ return -EBUSY;
++
++ return nfnl_cthelper_update_policy_all(tb, helper);
++}
++
+ static int
+ nfnl_cthelper_update(const struct nlattr * const tb[],
+ struct nf_conntrack_helper *helper)
+@@ -265,8 +361,7 @@ nfnl_cthelper_update(const struct nlattr * const tb[],
+ return -EBUSY;
+
+ if (tb[NFCTH_POLICY]) {
+- ret = nfnl_cthelper_parse_expect_policy(helper,
+- tb[NFCTH_POLICY]);
++ ret = nfnl_cthelper_update_policy(helper, tb[NFCTH_POLICY]);
+ if (ret < 0)
+ return ret;
+ }
+@@ -295,7 +390,11 @@ nfnl_cthelper_new(struct sock *nfnl, struct sk_buff *skb,
+ const char *helper_name;
+ struct nf_conntrack_helper *cur, *helper = NULL;
+ struct nf_conntrack_tuple tuple;
+- int ret = 0, i;
++ struct nfnl_cthelper *nlcth;
++ int ret = 0;
++
++ if (!capable(CAP_NET_ADMIN))
++ return -EPERM;
+
+ if (!tb[NFCTH_NAME] || !tb[NFCTH_TUPLE])
+ return -EINVAL;
+@@ -306,31 +405,22 @@ nfnl_cthelper_new(struct sock *nfnl, struct sk_buff *skb,
+ if (ret < 0)
+ return ret;
+
+- rcu_read_lock();
+- for (i = 0; i < nf_ct_helper_hsize && !helper; i++) {
+- hlist_for_each_entry_rcu(cur, &nf_ct_helper_hash[i], hnode) {
++ list_for_each_entry(nlcth, &nfnl_cthelper_list, list) {
++ cur = &nlcth->helper;
+
+- /* skip non-userspace conntrack helpers. */
+- if (!(cur->flags & NF_CT_HELPER_F_USERSPACE))
+- continue;
++ if (strncmp(cur->name, helper_name, NF_CT_HELPER_NAME_LEN))
++ continue;
+
+- if (strncmp(cur->name, helper_name,
+- NF_CT_HELPER_NAME_LEN) != 0)
+- continue;
++ if ((tuple.src.l3num != cur->tuple.src.l3num ||
++ tuple.dst.protonum != cur->tuple.dst.protonum))
++ continue;
+
+- if ((tuple.src.l3num != cur->tuple.src.l3num ||
+- tuple.dst.protonum != cur->tuple.dst.protonum))
+- continue;
++ if (nlh->nlmsg_flags & NLM_F_EXCL)
++ return -EEXIST;
+
+- if (nlh->nlmsg_flags & NLM_F_EXCL) {
+- ret = -EEXIST;
+- goto err;
+- }
+- helper = cur;
+- break;
+- }
++ helper = cur;
++ break;
+ }
+- rcu_read_unlock();
+
+ if (helper == NULL)
+ ret = nfnl_cthelper_create(tb, &tuple);
+@@ -338,9 +428,6 @@ nfnl_cthelper_new(struct sock *nfnl, struct sk_buff *skb,
+ ret = nfnl_cthelper_update(tb, helper);
+
+ return ret;
+-err:
+- rcu_read_unlock();
+- return ret;
+ }
+
+ static int
+@@ -504,13 +591,17 @@ static int
+ nfnl_cthelper_get(struct sock *nfnl, struct sk_buff *skb,
+ const struct nlmsghdr *nlh, const struct nlattr * const tb[])
+ {
+- int ret = -ENOENT, i;
++ int ret = -ENOENT;
+ struct nf_conntrack_helper *cur;
+ struct sk_buff *skb2;
+ char *helper_name = NULL;
+ struct nf_conntrack_tuple tuple;
++ struct nfnl_cthelper *nlcth;
+ bool tuple_set = false;
+
++ if (!capable(CAP_NET_ADMIN))
++ return -EPERM;
++
+ if (nlh->nlmsg_flags & NLM_F_DUMP) {
+ struct netlink_dump_control c = {
+ .dump = nfnl_cthelper_dump_table,
+@@ -529,45 +620,39 @@ nfnl_cthelper_get(struct sock *nfnl, struct sk_buff *skb,
+ tuple_set = true;
+ }
+
+- for (i = 0; i < nf_ct_helper_hsize; i++) {
+- hlist_for_each_entry_rcu(cur, &nf_ct_helper_hash[i], hnode) {
+-
+- /* skip non-userspace conntrack helpers. */
+- if (!(cur->flags & NF_CT_HELPER_F_USERSPACE))
+- continue;
++ list_for_each_entry(nlcth, &nfnl_cthelper_list, list) {
++ cur = &nlcth->helper;
++ if (helper_name &&
++ strncmp(cur->name, helper_name, NF_CT_HELPER_NAME_LEN))
++ continue;
+
+- if (helper_name && strncmp(cur->name, helper_name,
+- NF_CT_HELPER_NAME_LEN) != 0) {
+- continue;
+- }
+- if (tuple_set &&
+- (tuple.src.l3num != cur->tuple.src.l3num ||
+- tuple.dst.protonum != cur->tuple.dst.protonum))
+- continue;
++ if (tuple_set &&
++ (tuple.src.l3num != cur->tuple.src.l3num ||
++ tuple.dst.protonum != cur->tuple.dst.protonum))
++ continue;
+
+- skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+- if (skb2 == NULL) {
+- ret = -ENOMEM;
+- break;
+- }
++ skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
++ if (skb2 == NULL) {
++ ret = -ENOMEM;
++ break;
++ }
+
+- ret = nfnl_cthelper_fill_info(skb2, NETLINK_CB(skb).portid,
+- nlh->nlmsg_seq,
+- NFNL_MSG_TYPE(nlh->nlmsg_type),
+- NFNL_MSG_CTHELPER_NEW, cur);
+- if (ret <= 0) {
+- kfree_skb(skb2);
+- break;
+- }
++ ret = nfnl_cthelper_fill_info(skb2, NETLINK_CB(skb).portid,
++ nlh->nlmsg_seq,
++ NFNL_MSG_TYPE(nlh->nlmsg_type),
++ NFNL_MSG_CTHELPER_NEW, cur);
++ if (ret <= 0) {
++ kfree_skb(skb2);
++ break;
++ }
+
+- ret = netlink_unicast(nfnl, skb2, NETLINK_CB(skb).portid,
+- MSG_DONTWAIT);
+- if (ret > 0)
+- ret = 0;
++ ret = netlink_unicast(nfnl, skb2, NETLINK_CB(skb).portid,
++ MSG_DONTWAIT);
++ if (ret > 0)
++ ret = 0;
+
+- /* this avoids a loop in nfnetlink. */
+- return ret == -EAGAIN ? -ENOBUFS : ret;
+- }
++ /* this avoids a loop in nfnetlink. */
++ return ret == -EAGAIN ? -ENOBUFS : ret;
+ }
+ return ret;
+ }
+@@ -578,10 +663,13 @@ nfnl_cthelper_del(struct sock *nfnl, struct sk_buff *skb,
+ {
+ char *helper_name = NULL;
+ struct nf_conntrack_helper *cur;
+- struct hlist_node *tmp;
+ struct nf_conntrack_tuple tuple;
+ bool tuple_set = false, found = false;
+- int i, j = 0, ret;
++ struct nfnl_cthelper *nlcth, *n;
++ int j = 0, ret;
++
++ if (!capable(CAP_NET_ADMIN))
++ return -EPERM;
+
+ if (tb[NFCTH_NAME])
+ helper_name = nla_data(tb[NFCTH_NAME]);
+@@ -594,28 +682,27 @@ nfnl_cthelper_del(struct sock *nfnl, struct sk_buff *skb,
+ tuple_set = true;
+ }
+
+- for (i = 0; i < nf_ct_helper_hsize; i++) {
+- hlist_for_each_entry_safe(cur, tmp, &nf_ct_helper_hash[i],
+- hnode) {
+- /* skip non-userspace conntrack helpers. */
+- if (!(cur->flags & NF_CT_HELPER_F_USERSPACE))
+- continue;
++ list_for_each_entry_safe(nlcth, n, &nfnl_cthelper_list, list) {
++ cur = &nlcth->helper;
++ j++;
+
+- j++;
++ if (helper_name &&
++ strncmp(cur->name, helper_name, NF_CT_HELPER_NAME_LEN))
++ continue;
+
+- if (helper_name && strncmp(cur->name, helper_name,
+- NF_CT_HELPER_NAME_LEN) != 0) {
+- continue;
+- }
+- if (tuple_set &&
+- (tuple.src.l3num != cur->tuple.src.l3num ||
+- tuple.dst.protonum != cur->tuple.dst.protonum))
+- continue;
++ if (tuple_set &&
++ (tuple.src.l3num != cur->tuple.src.l3num ||
++ tuple.dst.protonum != cur->tuple.dst.protonum))
++ continue;
+
+- found = true;
+- nf_conntrack_helper_unregister(cur);
+- }
++ found = true;
++ nf_conntrack_helper_unregister(cur);
++ kfree(cur->expect_policy);
++
++ list_del(&nlcth->list);
++ kfree(nlcth);
+ }
++
+ /* Make sure we return success if we flush and there is no helpers */
+ return (found || j == 0) ? 0 : -ENOENT;
+ }
+@@ -664,20 +751,16 @@ err_out:
+ static void __exit nfnl_cthelper_exit(void)
+ {
+ struct nf_conntrack_helper *cur;
+- struct hlist_node *tmp;
+- int i;
++ struct nfnl_cthelper *nlcth, *n;
+
+ nfnetlink_subsys_unregister(&nfnl_cthelper_subsys);
+
+- for (i=0; i<nf_ct_helper_hsize; i++) {
+- hlist_for_each_entry_safe(cur, tmp, &nf_ct_helper_hash[i],
+- hnode) {
+- /* skip non-userspace conntrack helpers. */
+- if (!(cur->flags & NF_CT_HELPER_F_USERSPACE))
+- continue;
++ list_for_each_entry_safe(nlcth, n, &nfnl_cthelper_list, list) {
++ cur = &nlcth->helper;
+
+- nf_conntrack_helper_unregister(cur);
+- }
++ nf_conntrack_helper_unregister(cur);
++ kfree(cur->expect_policy);
++ kfree(nlcth);
+ }
+ }
+
+diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
+index 703fc9ba6f20..f4fcd9441561 100644
+--- a/net/netfilter/x_tables.c
++++ b/net/netfilter/x_tables.c
+@@ -38,8 +38,6 @@ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
+ MODULE_DESCRIPTION("{ip,ip6,arp,eb}_tables backend module");
+
+-#define SMP_ALIGN(x) (((x) + SMP_CACHE_BYTES-1) & ~(SMP_CACHE_BYTES-1))
+-
+ struct compat_delta {
+ unsigned int offset; /* offset in kernel */
+ int delta; /* delta in 32bit user land */
+@@ -211,6 +209,9 @@ xt_request_find_match(uint8_t nfproto, const char *name, uint8_t revision)
+ {
+ struct xt_match *match;
+
++ if (strnlen(name, XT_EXTENSION_MAXNAMELEN) == XT_EXTENSION_MAXNAMELEN)
++ return ERR_PTR(-EINVAL);
++
+ match = xt_find_match(nfproto, name, revision);
+ if (IS_ERR(match)) {
+ request_module("%st_%s", xt_prefix[nfproto], name);
+@@ -253,6 +254,9 @@ struct xt_target *xt_request_find_target(u8 af, const char *name, u8 revision)
+ {
+ struct xt_target *target;
+
++ if (strnlen(name, XT_EXTENSION_MAXNAMELEN) == XT_EXTENSION_MAXNAMELEN)
++ return ERR_PTR(-EINVAL);
++
+ target = xt_find_target(af, name, revision);
+ if (IS_ERR(target)) {
+ request_module("%st_%s", xt_prefix[af], name);
+@@ -951,7 +955,7 @@ struct xt_table_info *xt_alloc_table_info(unsigned int size)
+ int cpu;
+
+ /* Pedantry: prevent them from hitting BUG() in vmalloc.c --RR */
+- if ((SMP_ALIGN(size) >> PAGE_SHIFT) + 2 > totalram_pages)
++ if ((size >> PAGE_SHIFT) + 2 > totalram_pages)
+ return NULL;
+
+ newinfo = kzalloc(XT_TABLE_INFO_SZ, GFP_KERNEL);
+diff --git a/net/netfilter/xt_RATEEST.c b/net/netfilter/xt_RATEEST.c
+index 604df6fae6fc..0be96f8475f7 100644
+--- a/net/netfilter/xt_RATEEST.c
++++ b/net/netfilter/xt_RATEEST.c
+@@ -40,23 +40,31 @@ static void xt_rateest_hash_insert(struct xt_rateest *est)
+ hlist_add_head(&est->list, &rateest_hash[h]);
+ }
+
+-struct xt_rateest *xt_rateest_lookup(const char *name)
++static struct xt_rateest *__xt_rateest_lookup(const char *name)
+ {
+ struct xt_rateest *est;
+ unsigned int h;
+
+ h = xt_rateest_hash(name);
+- mutex_lock(&xt_rateest_mutex);
+ hlist_for_each_entry(est, &rateest_hash[h], list) {
+ if (strcmp(est->name, name) == 0) {
+ est->refcnt++;
+- mutex_unlock(&xt_rateest_mutex);
+ return est;
+ }
+ }
+- mutex_unlock(&xt_rateest_mutex);
++
+ return NULL;
+ }
++
++struct xt_rateest *xt_rateest_lookup(const char *name)
++{
++ struct xt_rateest *est;
++
++ mutex_lock(&xt_rateest_mutex);
++ est = __xt_rateest_lookup(name);
++ mutex_unlock(&xt_rateest_mutex);
++ return est;
++}
+ EXPORT_SYMBOL_GPL(xt_rateest_lookup);
+
+ void xt_rateest_put(struct xt_rateest *est)
+@@ -104,8 +112,10 @@ static int xt_rateest_tg_checkentry(const struct xt_tgchk_param *par)
+ rnd_inited = true;
+ }
+
+- est = xt_rateest_lookup(info->name);
++ mutex_lock(&xt_rateest_mutex);
++ est = __xt_rateest_lookup(info->name);
+ if (est) {
++ mutex_unlock(&xt_rateest_mutex);
+ /*
+ * If estimator parameters are specified, they must match the
+ * existing estimator.
+@@ -143,11 +153,13 @@ static int xt_rateest_tg_checkentry(const struct xt_tgchk_param *par)
+
+ info->est = est;
+ xt_rateest_hash_insert(est);
++ mutex_unlock(&xt_rateest_mutex);
+ return 0;
+
+ err2:
+ kfree(est);
+ err1:
++ mutex_unlock(&xt_rateest_mutex);
+ return ret;
+ }
+
+diff --git a/net/netfilter/xt_osf.c b/net/netfilter/xt_osf.c
+index 0778855ea5e7..20f7bd64ad40 100644
+--- a/net/netfilter/xt_osf.c
++++ b/net/netfilter/xt_osf.c
+@@ -19,6 +19,7 @@
+ #include <linux/module.h>
+ #include <linux/kernel.h>
+
++#include <linux/capability.h>
+ #include <linux/if.h>
+ #include <linux/inetdevice.h>
+ #include <linux/ip.h>
+@@ -69,6 +70,9 @@ static int xt_osf_add_callback(struct sock *ctnl, struct sk_buff *skb,
+ struct xt_osf_finger *kf = NULL, *sf;
+ int err = 0;
+
++ if (!capable(CAP_NET_ADMIN))
++ return -EPERM;
++
+ if (!osf_attrs[OSF_ATTR_FINGER])
+ return -EINVAL;
+
+@@ -112,6 +116,9 @@ static int xt_osf_remove_callback(struct sock *ctnl, struct sk_buff *skb,
+ struct xt_osf_finger *sf;
+ int err = -ENOENT;
+
++ if (!capable(CAP_NET_ADMIN))
++ return -EPERM;
++
+ if (!osf_attrs[OSF_ATTR_FINGER])
+ return -EINVAL;
+
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index a5815be7c81c..66c340bc0553 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -94,6 +94,44 @@ EXPORT_SYMBOL_GPL(nl_table);
+
+ static DECLARE_WAIT_QUEUE_HEAD(nl_table_wait);
+
++static struct lock_class_key nlk_cb_mutex_keys[MAX_LINKS];
++
++static const char *const nlk_cb_mutex_key_strings[MAX_LINKS + 1] = {
++ "nlk_cb_mutex-ROUTE",
++ "nlk_cb_mutex-1",
++ "nlk_cb_mutex-USERSOCK",
++ "nlk_cb_mutex-FIREWALL",
++ "nlk_cb_mutex-SOCK_DIAG",
++ "nlk_cb_mutex-NFLOG",
++ "nlk_cb_mutex-XFRM",
++ "nlk_cb_mutex-SELINUX",
++ "nlk_cb_mutex-ISCSI",
++ "nlk_cb_mutex-AUDIT",
++ "nlk_cb_mutex-FIB_LOOKUP",
++ "nlk_cb_mutex-CONNECTOR",
++ "nlk_cb_mutex-NETFILTER",
++ "nlk_cb_mutex-IP6_FW",
++ "nlk_cb_mutex-DNRTMSG",
++ "nlk_cb_mutex-KOBJECT_UEVENT",
++ "nlk_cb_mutex-GENERIC",
++ "nlk_cb_mutex-17",
++ "nlk_cb_mutex-SCSITRANSPORT",
++ "nlk_cb_mutex-ECRYPTFS",
++ "nlk_cb_mutex-RDMA",
++ "nlk_cb_mutex-CRYPTO",
++ "nlk_cb_mutex-SMC",
++ "nlk_cb_mutex-23",
++ "nlk_cb_mutex-24",
++ "nlk_cb_mutex-25",
++ "nlk_cb_mutex-26",
++ "nlk_cb_mutex-27",
++ "nlk_cb_mutex-28",
++ "nlk_cb_mutex-29",
++ "nlk_cb_mutex-30",
++ "nlk_cb_mutex-31",
++ "nlk_cb_mutex-MAX_LINKS"
++};
++
+ static int netlink_dump(struct sock *sk);
+ static void netlink_skb_destructor(struct sk_buff *skb);
+
+@@ -221,6 +259,9 @@ static int __netlink_deliver_tap_skb(struct sk_buff *skb,
+ struct sock *sk = skb->sk;
+ int ret = -ENOMEM;
+
++ if (!net_eq(dev_net(dev), sock_net(sk)))
++ return 0;
++
+ dev_hold(dev);
+
+ if (netlink_skb_is_mmaped(skb) || is_vmalloc_addr(skb->head))
+@@ -1177,6 +1218,9 @@ static int __netlink_create(struct net *net, struct socket *sock,
+ } else {
+ nlk->cb_mutex = &nlk->cb_def_mutex;
+ mutex_init(nlk->cb_mutex);
++ lockdep_set_class_and_name(nlk->cb_mutex,
++ nlk_cb_mutex_keys + protocol,
++ nlk_cb_mutex_key_strings[protocol]);
+ }
+ init_waitqueue_head(&nlk->wait);
+ #ifdef CONFIG_NETLINK_MMAP
+diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
+index c691b1a1eee0..a2601b0c4b0f 100644
+--- a/net/openvswitch/flow_netlink.c
++++ b/net/openvswitch/flow_netlink.c
+@@ -1531,14 +1531,11 @@ int ovs_nla_put_mask(const struct sw_flow *flow, struct sk_buff *skb)
+
+ #define MAX_ACTIONS_BUFSIZE (32 * 1024)
+
+-static struct sw_flow_actions *nla_alloc_flow_actions(int size, bool log)
++static struct sw_flow_actions *nla_alloc_flow_actions(int size)
+ {
+ struct sw_flow_actions *sfa;
+
+- if (size > MAX_ACTIONS_BUFSIZE) {
+- OVS_NLERR(log, "Flow action size %u bytes exceeds max", size);
+- return ERR_PTR(-EINVAL);
+- }
++ WARN_ON_ONCE(size > MAX_ACTIONS_BUFSIZE);
+
+ sfa = kmalloc(sizeof(*sfa) + size, GFP_KERNEL);
+ if (!sfa)
+@@ -1571,12 +1568,15 @@ static struct nlattr *reserve_sfa_size(struct sw_flow_actions **sfa,
+ new_acts_size = ksize(*sfa) * 2;
+
+ if (new_acts_size > MAX_ACTIONS_BUFSIZE) {
+- if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size)
++ if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size) {
++ OVS_NLERR(log, "Flow action size exceeds max %u",
++ MAX_ACTIONS_BUFSIZE);
+ return ERR_PTR(-EMSGSIZE);
++ }
+ new_acts_size = MAX_ACTIONS_BUFSIZE;
+ }
+
+- acts = nla_alloc_flow_actions(new_acts_size, log);
++ acts = nla_alloc_flow_actions(new_acts_size);
+ if (IS_ERR(acts))
+ return (void *)acts;
+
+@@ -2170,7 +2170,7 @@ int ovs_nla_copy_actions(const struct nlattr *attr,
+ {
+ int err;
+
+- *sfa = nla_alloc_flow_actions(nla_len(attr), log);
++ *sfa = nla_alloc_flow_actions(min(nla_len(attr), MAX_ACTIONS_BUFSIZE));
+ if (IS_ERR(*sfa))
+ return PTR_ERR(*sfa);
+
+diff --git a/net/rds/rdma.c b/net/rds/rdma.c
+index 612c3050d514..b1ec96bca937 100644
+--- a/net/rds/rdma.c
++++ b/net/rds/rdma.c
+@@ -516,6 +516,9 @@ int rds_rdma_extra_size(struct rds_rdma_args *args)
+
+ local_vec = (struct rds_iovec __user *)(unsigned long) args->local_vec_addr;
+
++ if (args->nr_local == 0)
++ return -EINVAL;
++
+ /* figure out the number of pages in the vector */
+ for (i = 0; i < args->nr_local; i++) {
+ if (copy_from_user(&vec, &local_vec[i],
+@@ -863,6 +866,7 @@ int rds_cmsg_atomic(struct rds_sock *rs, struct rds_message *rm,
+ err:
+ if (page)
+ put_page(page);
++ rm->atomic.op_active = 0;
+ kfree(rm->atomic.op_notifier);
+
+ return ret;
+diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
+index 3f6437db9b0f..ec11aced121d 100644
+--- a/net/sched/sch_choke.c
++++ b/net/sched/sch_choke.c
+@@ -431,6 +431,9 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt)
+
+ ctl = nla_data(tb[TCA_CHOKE_PARMS]);
+
++ if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog))
++ return -EINVAL;
++
+ if (ctl->limit > CHOKE_MAX_QUEUE)
+ return -EINVAL;
+
+diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
+index 634529e0ce6b..5a476126a8fb 100644
+--- a/net/sched/sch_gred.c
++++ b/net/sched/sch_gred.c
+@@ -388,6 +388,9 @@ static inline int gred_change_vq(struct Qdisc *sch, int dp,
+ struct gred_sched *table = qdisc_priv(sch);
+ struct gred_sched_data *q = table->tab[dp];
+
++ if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog))
++ return -EINVAL;
++
+ if (!q) {
+ table->tab[dp] = q = *prealloc;
+ *prealloc = NULL;
+diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
+index 8c0508c0e287..0505b8408c8b 100644
+--- a/net/sched/sch_red.c
++++ b/net/sched/sch_red.c
+@@ -199,6 +199,8 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt)
+ max_P = tb[TCA_RED_MAX_P] ? nla_get_u32(tb[TCA_RED_MAX_P]) : 0;
+
+ ctl = nla_data(tb[TCA_RED_PARMS]);
++ if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog))
++ return -EINVAL;
+
+ if (ctl->limit > 0) {
+ child = fifo_create_dflt(sch, &bfifo_qdisc_ops, ctl->limit);
+diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
+index 78d0eaf5de61..0dd1f2b2eb10 100644
+--- a/net/sched/sch_sfq.c
++++ b/net/sched/sch_sfq.c
+@@ -656,6 +656,9 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt)
+ if (ctl->divisor &&
+ (!is_power_of_2(ctl->divisor) || ctl->divisor > 65536))
+ return -EINVAL;
++ if (ctl_v1 && !red_check_params(ctl_v1->qth_min, ctl_v1->qth_max,
++ ctl_v1->Wlog))
++ return -EINVAL;
+ if (ctl_v1 && ctl_v1->qth_min) {
+ p = kmalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index 946d1c28f93f..c44e3d208804 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -83,7 +83,7 @@
+ static int sctp_writeable(struct sock *sk);
+ static void sctp_wfree(struct sk_buff *skb);
+ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
+- size_t msg_len, struct sock **orig_sk);
++ size_t msg_len);
+ static int sctp_wait_for_packet(struct sock *sk, int *err, long *timeo_p);
+ static int sctp_wait_for_connect(struct sctp_association *, long *timeo_p);
+ static int sctp_wait_for_accept(struct sock *sk, long timeo);
+@@ -332,16 +332,14 @@ static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
+ if (len < sizeof (struct sockaddr))
+ return NULL;
+
++ if (!opt->pf->af_supported(addr->sa.sa_family, opt))
++ return NULL;
++
+ /* V4 mapped address are really of AF_INET family */
+ if (addr->sa.sa_family == AF_INET6 &&
+- ipv6_addr_v4mapped(&addr->v6.sin6_addr)) {
+- if (!opt->pf->af_supported(AF_INET, opt))
+- return NULL;
+- } else {
+- /* Does this PF support this AF? */
+- if (!opt->pf->af_supported(addr->sa.sa_family, opt))
+- return NULL;
+- }
++ ipv6_addr_v4mapped(&addr->v6.sin6_addr) &&
++ !opt->pf->af_supported(AF_INET, opt))
++ return NULL;
+
+ /* If we get this far, af is valid. */
+ af = sctp_get_af_specific(addr->sa.sa_family);
+@@ -1948,7 +1946,7 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
+ timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT);
+ if (!sctp_wspace(asoc)) {
+ /* sk can be changed by peel off when waiting for buf. */
+- err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len, &sk);
++ err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len);
+ if (err) {
+ if (err == -ESRCH) {
+ /* asoc is already dead. */
+@@ -4163,7 +4161,7 @@ static int sctp_init_sock(struct sock *sk)
+ SCTP_DBG_OBJCNT_INC(sock);
+
+ local_bh_disable();
+- percpu_counter_inc(&sctp_sockets_allocated);
++ sk_sockets_allocated_inc(sk);
+ sock_prot_inuse_add(net, sk->sk_prot, 1);
+
+ /* Nothing can fail after this block, otherwise
+@@ -4207,7 +4205,7 @@ static void sctp_destroy_sock(struct sock *sk)
+ }
+ sctp_endpoint_free(sp->ep);
+ local_bh_disable();
+- percpu_counter_dec(&sctp_sockets_allocated);
++ sk_sockets_allocated_dec(sk);
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
+ local_bh_enable();
+ }
+@@ -6979,12 +6977,12 @@ void sctp_sock_rfree(struct sk_buff *skb)
+
+ /* Helper function to wait for space in the sndbuf. */
+ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
+- size_t msg_len, struct sock **orig_sk)
++ size_t msg_len)
+ {
+ struct sock *sk = asoc->base.sk;
+- int err = 0;
+ long current_timeo = *timeo_p;
+ DEFINE_WAIT(wait);
++ int err = 0;
+
+ pr_debug("%s: asoc:%p, timeo:%ld, msg_len:%zu\n", __func__, asoc,
+ *timeo_p, msg_len);
+@@ -7014,17 +7012,13 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
+ current_timeo = schedule_timeout(current_timeo);
+ BUG_ON(sk != asoc->base.sk);
+ lock_sock(sk);
+- if (sk != asoc->base.sk) {
+- release_sock(sk);
+- sk = asoc->base.sk;
+- lock_sock(sk);
+- }
++ if (sk != asoc->base.sk)
++ goto do_error;
+
+ *timeo_p = current_timeo;
+ }
+
+ out:
+- *orig_sk = sk;
+ finish_wait(&asoc->wait, &wait);
+
+ /* Release the association's refcnt. */
+diff --git a/net/sunrpc/auth_gss/gss_rpc_xdr.c b/net/sunrpc/auth_gss/gss_rpc_xdr.c
+index 2410d557ae39..89731c9023f0 100644
+--- a/net/sunrpc/auth_gss/gss_rpc_xdr.c
++++ b/net/sunrpc/auth_gss/gss_rpc_xdr.c
+@@ -231,6 +231,7 @@ static int gssx_dec_linux_creds(struct xdr_stream *xdr,
+ goto out_free_groups;
+ GROUP_AT(creds->cr_group_info, i) = kgid;
+ }
++ groups_sort(creds->cr_group_info);
+
+ return 0;
+ out_free_groups:
+diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
+index 033fec307528..036bbf2b44c1 100644
+--- a/net/sunrpc/auth_gss/svcauth_gss.c
++++ b/net/sunrpc/auth_gss/svcauth_gss.c
+@@ -481,6 +481,7 @@ static int rsc_parse(struct cache_detail *cd,
+ goto out;
+ GROUP_AT(rsci.cred.cr_group_info, i) = kgid;
+ }
++ groups_sort(rsci.cred.cr_group_info);
+
+ /* mech name */
+ len = qword_get(&mesg, buf, mlen);
+diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
+index 621ca7b4a155..98db1715cb17 100644
+--- a/net/sunrpc/svcauth_unix.c
++++ b/net/sunrpc/svcauth_unix.c
+@@ -520,6 +520,7 @@ static int unix_gid_parse(struct cache_detail *cd,
+ GROUP_AT(ug.gi, i) = kgid;
+ }
+
++ groups_sort(ug.gi);
+ ugp = unix_gid_lookup(cd, uid);
+ if (ugp) {
+ struct cache_head *ch;
+@@ -827,6 +828,7 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
+ kgid_t kgid = make_kgid(&init_user_ns, svc_getnl(argv));
+ GROUP_AT(cred->cr_group_info, i) = kgid;
+ }
++ groups_sort(cred->cr_group_info);
+ if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
+ *authp = rpc_autherr_badverf;
+ return SVC_DENIED;
+diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
+index 5e3ad598d3f5..14972988d29d 100644
+--- a/net/sunrpc/xprtsock.c
++++ b/net/sunrpc/xprtsock.c
+@@ -2189,6 +2189,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
+ case -ECONNREFUSED:
+ case -ECONNRESET:
+ case -ENETUNREACH:
++ case -EHOSTUNREACH:
+ case -EADDRINUSE:
+ case -ENOBUFS:
+ /* retry with existing socket, after a delay */
+diff --git a/net/wireless/core.c b/net/wireless/core.c
+index 71e9b84847f3..a0e465845735 100644
+--- a/net/wireless/core.c
++++ b/net/wireless/core.c
+@@ -390,6 +390,8 @@ struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
+ if (rv)
+ goto use_default_name;
+ } else {
++ int rv;
++
+ use_default_name:
+ /* NOTE: This is *probably* safe w/out holding rtnl because of
+ * the restrictions on phy names. Probably this call could
+@@ -397,7 +399,11 @@ use_default_name:
+ * phyX. But, might should add some locking and check return
+ * value, and use a different name if this one exists?
+ */
+- dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx);
++ rv = dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx);
++ if (rv < 0) {
++ kfree(rdev);
++ return NULL;
++ }
+ }
+
+ INIT_LIST_HEAD(&rdev->wdev_list);
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index acb4ccf448ba..f96aa76865de 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -15,6 +15,7 @@
+ #include <linux/nl80211.h>
+ #include <linux/rtnetlink.h>
+ #include <linux/netlink.h>
++#include <linux/nospec.h>
+ #include <linux/etherdevice.h>
+ #include <net/net_namespace.h>
+ #include <net/genetlink.h>
+@@ -1874,20 +1875,22 @@ static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
+ static int parse_txq_params(struct nlattr *tb[],
+ struct ieee80211_txq_params *txq_params)
+ {
++ u8 ac;
++
+ if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
+ !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
+ !tb[NL80211_TXQ_ATTR_AIFS])
+ return -EINVAL;
+
+- txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
++ ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
+ txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
+ txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
+ txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
+ txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
+
+- if (txq_params->ac >= NL80211_NUM_ACS)
++ if (ac >= NL80211_NUM_ACS)
+ return -EINVAL;
+-
++ txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
+ return 0;
+ }
+
+diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
+index 30593cadd428..84541b35629a 100644
+--- a/net/xfrm/xfrm_user.c
++++ b/net/xfrm/xfrm_user.c
+@@ -1353,11 +1353,14 @@ static void copy_templates(struct xfrm_policy *xp, struct xfrm_user_tmpl *ut,
+
+ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
+ {
++ u16 prev_family;
+ int i;
+
+ if (nr > XFRM_MAX_DEPTH)
+ return -EINVAL;
+
++ prev_family = family;
++
+ for (i = 0; i < nr; i++) {
+ /* We never validated the ut->family value, so many
+ * applications simply leave it at zero. The check was
+@@ -1369,6 +1372,12 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
+ if (!ut[i].family)
+ ut[i].family = family;
+
++ if ((ut[i].mode == XFRM_MODE_TRANSPORT) &&
++ (ut[i].family != prev_family))
++ return -EINVAL;
++
++ prev_family = ut[i].family;
++
+ switch (ut[i].family) {
+ case AF_INET:
+ break;
+@@ -1379,6 +1388,21 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
+ default:
+ return -EINVAL;
+ }
++
++ switch (ut[i].id.proto) {
++ case IPPROTO_AH:
++ case IPPROTO_ESP:
++ case IPPROTO_COMP:
++#if IS_ENABLED(CONFIG_IPV6)
++ case IPPROTO_ROUTING:
++ case IPPROTO_DSTOPTS:
++#endif
++ case IPSEC_PROTO_ANY:
++ break;
++ default:
++ return -EINVAL;
++ }
++
+ }
+
+ return 0;
+diff --git a/scripts/Makefile.build b/scripts/Makefile.build
+index 01df30af4d4a..18209917e379 100644
+--- a/scripts/Makefile.build
++++ b/scripts/Makefile.build
+@@ -158,7 +158,8 @@ cmd_cc_i_c = $(CPP) $(c_flags) -o $@ $<
+ $(obj)/%.i: $(src)/%.c FORCE
+ $(call if_changed_dep,cc_i_c)
+
+-cmd_gensymtypes = \
++# These mirror gensymtypes_S and co below, keep them in synch.
++cmd_gensymtypes_c = \
+ $(CPP) -D__GENKSYMS__ $(c_flags) $< | \
+ $(GENKSYMS) $(if $(1), -T $(2)) \
+ $(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \
+@@ -168,7 +169,7 @@ cmd_gensymtypes = \
+ quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
+ cmd_cc_symtypes_c = \
+ set -e; \
+- $(call cmd_gensymtypes,true,$@) >/dev/null; \
++ $(call cmd_gensymtypes_c,true,$@) >/dev/null; \
+ test -s $@ || rm -f $@
+
+ $(obj)/%.symtypes : $(src)/%.c FORCE
+@@ -197,9 +198,10 @@ else
+ # the actual value of the checksum generated by genksyms
+
+ cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $<
+-cmd_modversions = \
++
++cmd_modversions_c = \
+ if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \
+- $(call cmd_gensymtypes,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
++ $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
+ > $(@D)/.tmp_$(@F:.o=.ver); \
+ \
+ $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \
+@@ -244,7 +246,7 @@ endif
+ define rule_cc_o_c
+ $(call echo-cmd,checksrc) $(cmd_checksrc) \
+ $(call echo-cmd,cc_o_c) $(cmd_cc_o_c); \
+- $(cmd_modversions) \
++ $(cmd_modversions_c) \
+ $(call echo-cmd,record_mcount) \
+ $(cmd_record_mcount) \
+ scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \
+@@ -253,6 +255,15 @@ define rule_cc_o_c
+ mv -f $(dot-target).tmp $(dot-target).cmd
+ endef
+
++define rule_as_o_S
++ $(call echo-cmd,as_o_S) $(cmd_as_o_S); \
++ scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,as_o_S)' > \
++ $(dot-target).tmp; \
++ $(cmd_modversions_S) \
++ rm -f $(depfile); \
++ mv -f $(dot-target).tmp $(dot-target).cmd
++endef
++
+ # Built-in and composite module parts
+ $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
+ $(call cmd,force_checksrc)
+@@ -281,6 +292,38 @@ modkern_aflags := $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)
+ $(real-objs-m) : modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
+ $(real-objs-m:.o=.s): modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
+
++# .S file exports must have their C prototypes defined in asm/asm-prototypes.h
++# or a file that it includes, in order to get versioned symbols. We build a
++# dummy C file that includes asm-prototypes and the EXPORT_SYMBOL lines from
++# the .S file (with trailing ';'), and run genksyms on that, to extract vers.
++#
++# This is convoluted. The .S file must first be preprocessed to run guards and
++# expand names, then the resulting exports must be constructed into plain
++# EXPORT_SYMBOL(symbol); to build our dummy C file, and that gets preprocessed
++# to make the genksyms input.
++#
++# These mirror gensymtypes_c and co above, keep them in synch.
++cmd_gensymtypes_S = \
++ (echo "\#include <linux/kernel.h>" ; \
++ echo "\#include <asm/asm-prototypes.h>" ; \
++ $(CPP) $(a_flags) $< | \
++ grep "\<___EXPORT_SYMBOL\>" | \
++ sed 's/.*___EXPORT_SYMBOL[[:space:]]*\([a-zA-Z0-9_]*\)[[:space:]]*,.*/EXPORT_SYMBOL(\1);/' ) | \
++ $(CPP) -D__GENKSYMS__ $(c_flags) -xc - | \
++ $(GENKSYMS) $(if $(1), -T $(2)) \
++ $(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \
++ $(if $(KBUILD_PRESERVE),-p) \
++ -r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
++
++quiet_cmd_cc_symtypes_S = SYM $(quiet_modtag) $@
++cmd_cc_symtypes_S = \
++ set -e; \
++ $(call cmd_gensymtypes_S,true,$@) >/dev/null; \
++ test -s $@ || rm -f $@
++
++$(obj)/%.symtypes : $(src)/%.S FORCE
++ $(call cmd,cc_symtypes_S)
++
+ quiet_cmd_as_s_S = CPP $(quiet_modtag) $@
+ cmd_as_s_S = $(CPP) $(a_flags) -o $@ $<
+
+@@ -288,10 +331,40 @@ $(obj)/%.s: $(src)/%.S FORCE
+ $(call if_changed_dep,as_s_S)
+
+ quiet_cmd_as_o_S = AS $(quiet_modtag) $@
+-cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
++
++ifndef CONFIG_MODVERSIONS
++cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
++
++else
++
++ASM_PROTOTYPES := $(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/asm-prototypes.h)
++
++ifeq ($(ASM_PROTOTYPES),)
++cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
++
++else
++
++# versioning matches the C process described above, with difference that
++# we parse asm-prototypes.h C header to get function definitions.
++
++cmd_as_o_S = $(CC) $(a_flags) -c -o $(@D)/.tmp_$(@F) $<
++
++cmd_modversions_S = \
++ if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \
++ $(call cmd_gensymtypes_S,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
++ > $(@D)/.tmp_$(@F:.o=.ver); \
++ \
++ $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \
++ -T $(@D)/.tmp_$(@F:.o=.ver); \
++ rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver); \
++ else \
++ mv -f $(@D)/.tmp_$(@F) $@; \
++ fi;
++endif
++endif
+
+ $(obj)/%.o: $(src)/%.S FORCE
+- $(call if_changed_dep,as_o_S)
++ $(call if_changed_rule,as_o_S)
+
+ targets += $(real-objs-y) $(real-objs-m) $(lib-y)
+ targets += $(extra-y) $(MAKECMDGOALS) $(always)
+diff --git a/scripts/genksyms/genksyms.c b/scripts/genksyms/genksyms.c
+index 88632df4381b..dafaf96e0a34 100644
+--- a/scripts/genksyms/genksyms.c
++++ b/scripts/genksyms/genksyms.c
+@@ -423,13 +423,15 @@ static struct string_list *read_node(FILE *f)
+ struct string_list node = {
+ .string = buffer,
+ .tag = SYM_NORMAL };
+- int c;
++ int c, in_string = 0;
+
+ while ((c = fgetc(f)) != EOF) {
+- if (c == ' ') {
++ if (!in_string && c == ' ') {
+ if (node.string == buffer)
+ continue;
+ break;
++ } else if (c == '"') {
++ in_string = !in_string;
+ } else if (c == '\n') {
+ if (node.string == buffer)
+ return NULL;
+diff --git a/scripts/kernel-doc b/scripts/kernel-doc
+index 9922e66883a5..f936d9e5db91 100755
+--- a/scripts/kernel-doc
++++ b/scripts/kernel-doc
+@@ -2616,4 +2616,4 @@ if ($verbose && $warnings) {
+ print STDERR "$warnings warnings\n";
+ }
+
+-exit($errors);
++exit($output_mode eq "none" ? 0 : $errors);
+diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
+index 91ee1b2e0f9a..a9f02fe15ce3 100644
+--- a/scripts/mod/modpost.c
++++ b/scripts/mod/modpost.c
+@@ -593,7 +593,8 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname)
+ if (strncmp(symname, "_restgpr0_", sizeof("_restgpr0_") - 1) == 0 ||
+ strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0 ||
+ strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 ||
+- strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0)
++ strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0 ||
++ strcmp(symname, ".TOC.") == 0)
+ return 1;
+ /* Do not ignore this symbol */
+ return 0;
+diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
+index 89d5695c51cd..20251ee5c491 100644
+--- a/security/keys/encrypted-keys/encrypted.c
++++ b/security/keys/encrypted-keys/encrypted.c
+@@ -141,23 +141,22 @@ static int valid_ecryptfs_desc(const char *ecryptfs_desc)
+ */
+ static int valid_master_desc(const char *new_desc, const char *orig_desc)
+ {
+- if (!memcmp(new_desc, KEY_TRUSTED_PREFIX, KEY_TRUSTED_PREFIX_LEN)) {
+- if (strlen(new_desc) == KEY_TRUSTED_PREFIX_LEN)
+- goto out;
+- if (orig_desc)
+- if (memcmp(new_desc, orig_desc, KEY_TRUSTED_PREFIX_LEN))
+- goto out;
+- } else if (!memcmp(new_desc, KEY_USER_PREFIX, KEY_USER_PREFIX_LEN)) {
+- if (strlen(new_desc) == KEY_USER_PREFIX_LEN)
+- goto out;
+- if (orig_desc)
+- if (memcmp(new_desc, orig_desc, KEY_USER_PREFIX_LEN))
+- goto out;
+- } else
+- goto out;
++ int prefix_len;
++
++ if (!strncmp(new_desc, KEY_TRUSTED_PREFIX, KEY_TRUSTED_PREFIX_LEN))
++ prefix_len = KEY_TRUSTED_PREFIX_LEN;
++ else if (!strncmp(new_desc, KEY_USER_PREFIX, KEY_USER_PREFIX_LEN))
++ prefix_len = KEY_USER_PREFIX_LEN;
++ else
++ return -EINVAL;
++
++ if (!new_desc[prefix_len])
++ return -EINVAL;
++
++ if (orig_desc && strncmp(new_desc, orig_desc, prefix_len))
++ return -EINVAL;
++
+ return 0;
+-out:
+- return -EINVAL;
+ }
+
+ /*
+diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
+index 9e2d82070915..31d1d2ebd6f2 100644
+--- a/security/selinux/ss/services.c
++++ b/security/selinux/ss/services.c
+@@ -823,6 +823,9 @@ int security_bounded_transition(u32 old_sid, u32 new_sid)
+ int index;
+ int rc;
+
++ if (!ss_initialized)
++ return 0;
++
+ read_lock(&policy_rwlock);
+
+ rc = -EINVAL;
+@@ -1236,27 +1239,25 @@ static int security_context_to_sid_core(const char *scontext, u32 scontext_len,
+ if (!scontext_len)
+ return -EINVAL;
+
++ /* Copy the string to allow changes and ensure a NUL terminator */
++ scontext2 = kmemdup_nul(scontext, scontext_len, gfp_flags);
++ if (!scontext2)
++ return -ENOMEM;
++
+ if (!ss_initialized) {
+ int i;
+
+ for (i = 1; i < SECINITSID_NUM; i++) {
+- if (!strcmp(initial_sid_to_string[i], scontext)) {
++ if (!strcmp(initial_sid_to_string[i], scontext2)) {
+ *sid = i;
+- return 0;
++ goto out;
+ }
+ }
+ *sid = SECINITSID_KERNEL;
+- return 0;
++ goto out;
+ }
+ *sid = SECSID_NULL;
+
+- /* Copy the string so that we can modify the copy as we parse it. */
+- scontext2 = kmalloc(scontext_len + 1, gfp_flags);
+- if (!scontext2)
+- return -ENOMEM;
+- memcpy(scontext2, scontext, scontext_len);
+- scontext2[scontext_len] = 0;
+-
+ if (force) {
+ /* Save another copy for storing in uninterpreted form */
+ rc = -ENOMEM;
+diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
+index 33e72c809e50..494b7b533366 100644
+--- a/sound/core/oss/pcm_oss.c
++++ b/sound/core/oss/pcm_oss.c
+@@ -465,7 +465,6 @@ static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm,
+ v = snd_pcm_hw_param_last(pcm, params, var, dir);
+ else
+ v = snd_pcm_hw_param_first(pcm, params, var, dir);
+- snd_BUG_ON(v < 0);
+ return v;
+ }
+
+@@ -1370,8 +1369,11 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
+
+ if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
+ return tmp;
+- mutex_lock(&runtime->oss.params_lock);
+ while (bytes > 0) {
++ if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
++ tmp = -ERESTARTSYS;
++ break;
++ }
+ if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
+ tmp = bytes;
+ if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
+@@ -1415,14 +1417,18 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
+ xfer += tmp;
+ if ((substream->f_flags & O_NONBLOCK) != 0 &&
+ tmp != runtime->oss.period_bytes)
+- break;
++ tmp = -EAGAIN;
+ }
+- }
+- mutex_unlock(&runtime->oss.params_lock);
+- return xfer;
+-
+ err:
+- mutex_unlock(&runtime->oss.params_lock);
++ mutex_unlock(&runtime->oss.params_lock);
++ if (tmp < 0)
++ break;
++ if (signal_pending(current)) {
++ tmp = -ERESTARTSYS;
++ break;
++ }
++ tmp = 0;
++ }
+ return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
+ }
+
+@@ -1470,8 +1476,11 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
+
+ if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
+ return tmp;
+- mutex_lock(&runtime->oss.params_lock);
+ while (bytes > 0) {
++ if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
++ tmp = -ERESTARTSYS;
++ break;
++ }
+ if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
+ if (runtime->oss.buffer_used == 0) {
+ tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
+@@ -1502,12 +1511,16 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
+ bytes -= tmp;
+ xfer += tmp;
+ }
+- }
+- mutex_unlock(&runtime->oss.params_lock);
+- return xfer;
+-
+ err:
+- mutex_unlock(&runtime->oss.params_lock);
++ mutex_unlock(&runtime->oss.params_lock);
++ if (tmp < 0)
++ break;
++ if (signal_pending(current)) {
++ tmp = -ERESTARTSYS;
++ break;
++ }
++ tmp = 0;
++ }
+ return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
+ }
+
+diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c
+index 727ac44d39f4..a84a1d3d23e5 100644
+--- a/sound/core/oss/pcm_plugin.c
++++ b/sound/core/oss/pcm_plugin.c
+@@ -591,18 +591,26 @@ snd_pcm_sframes_t snd_pcm_plug_write_transfer(struct snd_pcm_substream *plug, st
+ snd_pcm_sframes_t frames = size;
+
+ plugin = snd_pcm_plug_first(plug);
+- while (plugin && frames > 0) {
++ while (plugin) {
++ if (frames <= 0)
++ return frames;
+ if ((next = plugin->next) != NULL) {
+ snd_pcm_sframes_t frames1 = frames;
+- if (plugin->dst_frames)
++ if (plugin->dst_frames) {
+ frames1 = plugin->dst_frames(plugin, frames);
++ if (frames1 <= 0)
++ return frames1;
++ }
+ if ((err = next->client_channels(next, frames1, &dst_channels)) < 0) {
+ return err;
+ }
+ if (err != frames1) {
+ frames = err;
+- if (plugin->src_frames)
++ if (plugin->src_frames) {
+ frames = plugin->src_frames(plugin, frames1);
++ if (frames <= 0)
++ return frames;
++ }
+ }
+ } else
+ dst_channels = NULL;
+diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
+index 9a7cc9a56a21..169df070c22b 100644
+--- a/sound/core/pcm_lib.c
++++ b/sound/core/pcm_lib.c
+@@ -578,7 +578,6 @@ static inline unsigned int muldiv32(unsigned int a, unsigned int b,
+ {
+ u_int64_t n = (u_int64_t) a * b;
+ if (c == 0) {
+- snd_BUG_ON(!n);
+ *r = 0;
+ return UINT_MAX;
+ }
+@@ -1663,7 +1662,7 @@ int snd_pcm_hw_param_first(struct snd_pcm_substream *pcm,
+ return changed;
+ if (params->rmask) {
+ int err = snd_pcm_hw_refine(pcm, params);
+- if (snd_BUG_ON(err < 0))
++ if (err < 0)
+ return err;
+ }
+ return snd_pcm_hw_param_value(params, var, dir);
+@@ -1710,7 +1709,7 @@ int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm,
+ return changed;
+ if (params->rmask) {
+ int err = snd_pcm_hw_refine(pcm, params);
+- if (snd_BUG_ON(err < 0))
++ if (err < 0)
+ return err;
+ }
+ return snd_pcm_hw_param_value(params, var, dir);
+diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
+index b450a27588c8..16f8124b1150 100644
+--- a/sound/core/rawmidi.c
++++ b/sound/core/rawmidi.c
+@@ -579,15 +579,14 @@ static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream,
+ return 0;
+ }
+
+-int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info)
++static int __snd_rawmidi_info_select(struct snd_card *card,
++ struct snd_rawmidi_info *info)
+ {
+ struct snd_rawmidi *rmidi;
+ struct snd_rawmidi_str *pstr;
+ struct snd_rawmidi_substream *substream;
+
+- mutex_lock(®ister_mutex);
+ rmidi = snd_rawmidi_search(card, info->device);
+- mutex_unlock(®ister_mutex);
+ if (!rmidi)
+ return -ENXIO;
+ if (info->stream < 0 || info->stream > 1)
+@@ -603,6 +602,16 @@ int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info
+ }
+ return -ENXIO;
+ }
++
++int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info)
++{
++ int ret;
++
++ mutex_lock(®ister_mutex);
++ ret = __snd_rawmidi_info_select(card, info);
++ mutex_unlock(®ister_mutex);
++ return ret;
++}
+ EXPORT_SYMBOL(snd_rawmidi_info_select);
+
+ static int snd_rawmidi_info_select_user(struct snd_card *card,
+diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
+index e3767122dd0b..b9ce5da25938 100644
+--- a/sound/core/seq/seq_clientmgr.c
++++ b/sound/core/seq/seq_clientmgr.c
+@@ -236,6 +236,7 @@ static struct snd_seq_client *seq_create_client1(int client_index, int poolsize)
+ rwlock_init(&client->ports_lock);
+ mutex_init(&client->ports_mutex);
+ INIT_LIST_HEAD(&client->ports_list_head);
++ mutex_init(&client->ioctl_mutex);
+
+ /* find free slot in the client table */
+ spin_lock_irqsave(&clients_lock, flags);
+@@ -1011,7 +1012,7 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
+ {
+ struct snd_seq_client *client = file->private_data;
+ int written = 0, len;
+- int err = -EINVAL;
++ int err;
+ struct snd_seq_event event;
+
+ if (!(snd_seq_file_flags(file) & SNDRV_SEQ_LFLG_OUTPUT))
+@@ -1026,11 +1027,15 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
+
+ /* allocate the pool now if the pool is not allocated yet */
+ if (client->pool->size > 0 && !snd_seq_write_pool_allocated(client)) {
+- if (snd_seq_pool_init(client->pool) < 0)
++ mutex_lock(&client->ioctl_mutex);
++ err = snd_seq_pool_init(client->pool);
++ mutex_unlock(&client->ioctl_mutex);
++ if (err < 0)
+ return -ENOMEM;
+ }
+
+ /* only process whole events */
++ err = -EINVAL;
+ while (count >= sizeof(struct snd_seq_event)) {
+ /* Read in the event header from the user */
+ len = sizeof(event);
+@@ -2195,6 +2200,7 @@ static int snd_seq_do_ioctl(struct snd_seq_client *client, unsigned int cmd,
+ void __user *arg)
+ {
+ struct seq_ioctl_table *p;
++ int ret;
+
+ switch (cmd) {
+ case SNDRV_SEQ_IOCTL_PVERSION:
+@@ -2208,8 +2214,12 @@ static int snd_seq_do_ioctl(struct snd_seq_client *client, unsigned int cmd,
+ if (! arg)
+ return -EFAULT;
+ for (p = ioctl_tables; p->cmd; p++) {
+- if (p->cmd == cmd)
+- return p->func(client, arg);
++ if (p->cmd == cmd) {
++ mutex_lock(&client->ioctl_mutex);
++ ret = p->func(client, arg);
++ mutex_unlock(&client->ioctl_mutex);
++ return ret;
++ }
+ }
+ pr_debug("ALSA: seq unknown ioctl() 0x%x (type='%c', number=0x%02x)\n",
+ cmd, _IOC_TYPE(cmd), _IOC_NR(cmd));
+diff --git a/sound/core/seq/seq_clientmgr.h b/sound/core/seq/seq_clientmgr.h
+index 20f0a725ec7d..91f8f165bfdc 100644
+--- a/sound/core/seq/seq_clientmgr.h
++++ b/sound/core/seq/seq_clientmgr.h
+@@ -59,6 +59,7 @@ struct snd_seq_client {
+ struct list_head ports_list_head;
+ rwlock_t ports_lock;
+ struct mutex ports_mutex;
++ struct mutex ioctl_mutex;
+ int convert32; /* convert 32->64bit */
+
+ /* output pool */
+diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c
+index 7f9126efc1e5..83ae083b192f 100644
+--- a/sound/drivers/aloop.c
++++ b/sound/drivers/aloop.c
+@@ -39,6 +39,7 @@
+ #include <sound/core.h>
+ #include <sound/control.h>
+ #include <sound/pcm.h>
++#include <sound/pcm_params.h>
+ #include <sound/info.h>
+ #include <sound/initval.h>
+
+@@ -305,19 +306,6 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd)
+ return 0;
+ }
+
+-static void params_change_substream(struct loopback_pcm *dpcm,
+- struct snd_pcm_runtime *runtime)
+-{
+- struct snd_pcm_runtime *dst_runtime;
+-
+- if (dpcm == NULL || dpcm->substream == NULL)
+- return;
+- dst_runtime = dpcm->substream->runtime;
+- if (dst_runtime == NULL)
+- return;
+- dst_runtime->hw = dpcm->cable->hw;
+-}
+-
+ static void params_change(struct snd_pcm_substream *substream)
+ {
+ struct snd_pcm_runtime *runtime = substream->runtime;
+@@ -329,10 +317,6 @@ static void params_change(struct snd_pcm_substream *substream)
+ cable->hw.rate_max = runtime->rate;
+ cable->hw.channels_min = runtime->channels;
+ cable->hw.channels_max = runtime->channels;
+- params_change_substream(cable->streams[SNDRV_PCM_STREAM_PLAYBACK],
+- runtime);
+- params_change_substream(cable->streams[SNDRV_PCM_STREAM_CAPTURE],
+- runtime);
+ }
+
+ static int loopback_prepare(struct snd_pcm_substream *substream)
+@@ -620,26 +604,29 @@ static unsigned int get_cable_index(struct snd_pcm_substream *substream)
+ static int rule_format(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+ {
++ struct loopback_pcm *dpcm = rule->private;
++ struct loopback_cable *cable = dpcm->cable;
++ struct snd_mask m;
+
+- struct snd_pcm_hardware *hw = rule->private;
+- struct snd_mask *maskp = hw_param_mask(params, rule->var);
+-
+- maskp->bits[0] &= (u_int32_t)hw->formats;
+- maskp->bits[1] &= (u_int32_t)(hw->formats >> 32);
+- memset(maskp->bits + 2, 0, (SNDRV_MASK_MAX-64) / 8); /* clear rest */
+- if (! maskp->bits[0] && ! maskp->bits[1])
+- return -EINVAL;
+- return 0;
++ snd_mask_none(&m);
++ mutex_lock(&dpcm->loopback->cable_lock);
++ m.bits[0] = (u_int32_t)cable->hw.formats;
++ m.bits[1] = (u_int32_t)(cable->hw.formats >> 32);
++ mutex_unlock(&dpcm->loopback->cable_lock);
++ return snd_mask_refine(hw_param_mask(params, rule->var), &m);
+ }
+
+ static int rule_rate(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+ {
+- struct snd_pcm_hardware *hw = rule->private;
++ struct loopback_pcm *dpcm = rule->private;
++ struct loopback_cable *cable = dpcm->cable;
+ struct snd_interval t;
+
+- t.min = hw->rate_min;
+- t.max = hw->rate_max;
++ mutex_lock(&dpcm->loopback->cable_lock);
++ t.min = cable->hw.rate_min;
++ t.max = cable->hw.rate_max;
++ mutex_unlock(&dpcm->loopback->cable_lock);
+ t.openmin = t.openmax = 0;
+ t.integer = 0;
+ return snd_interval_refine(hw_param_interval(params, rule->var), &t);
+@@ -648,22 +635,44 @@ static int rule_rate(struct snd_pcm_hw_params *params,
+ static int rule_channels(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+ {
+- struct snd_pcm_hardware *hw = rule->private;
++ struct loopback_pcm *dpcm = rule->private;
++ struct loopback_cable *cable = dpcm->cable;
+ struct snd_interval t;
+
+- t.min = hw->channels_min;
+- t.max = hw->channels_max;
++ mutex_lock(&dpcm->loopback->cable_lock);
++ t.min = cable->hw.channels_min;
++ t.max = cable->hw.channels_max;
++ mutex_unlock(&dpcm->loopback->cable_lock);
+ t.openmin = t.openmax = 0;
+ t.integer = 0;
+ return snd_interval_refine(hw_param_interval(params, rule->var), &t);
+ }
+
++static void free_cable(struct snd_pcm_substream *substream)
++{
++ struct loopback *loopback = substream->private_data;
++ int dev = get_cable_index(substream);
++ struct loopback_cable *cable;
++
++ cable = loopback->cables[substream->number][dev];
++ if (!cable)
++ return;
++ if (cable->streams[!substream->stream]) {
++ /* other stream is still alive */
++ cable->streams[substream->stream] = NULL;
++ } else {
++ /* free the cable */
++ loopback->cables[substream->number][dev] = NULL;
++ kfree(cable);
++ }
++}
++
+ static int loopback_open(struct snd_pcm_substream *substream)
+ {
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct loopback *loopback = substream->private_data;
+ struct loopback_pcm *dpcm;
+- struct loopback_cable *cable;
++ struct loopback_cable *cable = NULL;
+ int err = 0;
+ int dev = get_cable_index(substream);
+
+@@ -682,7 +691,6 @@ static int loopback_open(struct snd_pcm_substream *substream)
+ if (!cable) {
+ cable = kzalloc(sizeof(*cable), GFP_KERNEL);
+ if (!cable) {
+- kfree(dpcm);
+ err = -ENOMEM;
+ goto unlock;
+ }
+@@ -700,19 +708,19 @@ static int loopback_open(struct snd_pcm_substream *substream)
+ /* are cached -> they do not reflect the actual state */
+ err = snd_pcm_hw_rule_add(runtime, 0,
+ SNDRV_PCM_HW_PARAM_FORMAT,
+- rule_format, &runtime->hw,
++ rule_format, dpcm,
+ SNDRV_PCM_HW_PARAM_FORMAT, -1);
+ if (err < 0)
+ goto unlock;
+ err = snd_pcm_hw_rule_add(runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+- rule_rate, &runtime->hw,
++ rule_rate, dpcm,
+ SNDRV_PCM_HW_PARAM_RATE, -1);
+ if (err < 0)
+ goto unlock;
+ err = snd_pcm_hw_rule_add(runtime, 0,
+ SNDRV_PCM_HW_PARAM_CHANNELS,
+- rule_channels, &runtime->hw,
++ rule_channels, dpcm,
+ SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+ if (err < 0)
+ goto unlock;
+@@ -724,6 +732,10 @@ static int loopback_open(struct snd_pcm_substream *substream)
+ else
+ runtime->hw = cable->hw;
+ unlock:
++ if (err < 0) {
++ free_cable(substream);
++ kfree(dpcm);
++ }
+ mutex_unlock(&loopback->cable_lock);
+ return err;
+ }
+@@ -732,20 +744,10 @@ static int loopback_close(struct snd_pcm_substream *substream)
+ {
+ struct loopback *loopback = substream->private_data;
+ struct loopback_pcm *dpcm = substream->runtime->private_data;
+- struct loopback_cable *cable;
+- int dev = get_cable_index(substream);
+
+ loopback_timer_stop(dpcm);
+ mutex_lock(&loopback->cable_lock);
+- cable = loopback->cables[substream->number][dev];
+- if (cable->streams[!substream->stream]) {
+- /* other stream is still alive */
+- cable->streams[substream->stream] = NULL;
+- } else {
+- /* free the cable */
+- loopback->cables[substream->number][dev] = NULL;
+- kfree(cable);
+- }
++ free_cable(substream);
+ mutex_unlock(&loopback->cable_lock);
+ return 0;
+ }
+diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
+index 0374bd5b61c8..1fb951225318 100644
+--- a/sound/pci/hda/patch_ca0132.c
++++ b/sound/pci/hda/patch_ca0132.c
+@@ -1452,6 +1452,9 @@ static int dspio_scp(struct hda_codec *codec,
+ } else if (ret_size != reply_data_size) {
+ codec_dbg(codec, "RetLen and HdrLen .NE.\n");
+ return -EINVAL;
++ } else if (!reply) {
++ codec_dbg(codec, "NULL reply\n");
++ return -EINVAL;
+ } else {
+ *reply_len = ret_size*sizeof(unsigned int);
+ memcpy(reply, scp_reply.data, *reply_len);
+diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
+index aeb054ca9ed9..b3d222d96a1b 100644
+--- a/sound/pci/hda/patch_cirrus.c
++++ b/sound/pci/hda/patch_cirrus.c
+@@ -394,6 +394,7 @@ static const struct snd_pci_quirk cs420x_fixup_tbl[] = {
+ /*SND_PCI_QUIRK(0x8086, 0x7270, "IMac 27 Inch", CS420X_IMAC27),*/
+
+ /* codec SSID */
++ SND_PCI_QUIRK(0x106b, 0x0600, "iMac 14,1", CS420X_IMAC27_122),
+ SND_PCI_QUIRK(0x106b, 0x1c00, "MacBookPro 8,1", CS420X_MBP81),
+ SND_PCI_QUIRK(0x106b, 0x2000, "iMac 12,2", CS420X_IMAC27_122),
+ SND_PCI_QUIRK(0x106b, 0x2800, "MacBookPro 10,1", CS420X_MBP101),
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 75c4e14f4156..861dc57cb082 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -3119,6 +3119,19 @@ static void alc269_fixup_pincfg_no_hp_to_lineout(struct hda_codec *codec,
+ spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP;
+ }
+
++static void alc269_fixup_pincfg_U7x7_headset_mic(struct hda_codec *codec,
++ const struct hda_fixup *fix,
++ int action)
++{
++ unsigned int cfg_headphone = snd_hda_codec_get_pincfg(codec, 0x21);
++ unsigned int cfg_headset_mic = snd_hda_codec_get_pincfg(codec, 0x19);
++
++ if (cfg_headphone && cfg_headset_mic == 0x411111f0)
++ snd_hda_codec_set_pincfg(codec, 0x19,
++ (cfg_headphone & ~AC_DEFCFG_DEVICE) |
++ (AC_JACK_MIC_IN << AC_DEFCFG_DEVICE_SHIFT));
++}
++
+ static void alc269_fixup_hweq(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+ {
+@@ -4675,6 +4688,7 @@ enum {
+ ALC269_FIXUP_LIFEBOOK_EXTMIC,
+ ALC269_FIXUP_LIFEBOOK_HP_PIN,
+ ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT,
++ ALC255_FIXUP_LIFEBOOK_U7x7_HEADSET_MIC,
+ ALC269_FIXUP_AMIC,
+ ALC269_FIXUP_DMIC,
+ ALC269VB_FIXUP_AMIC,
+@@ -4732,6 +4746,7 @@ enum {
+ ALC286_FIXUP_HP_GPIO_LED,
+ ALC280_FIXUP_HP_GPIO2_MIC_HOTKEY,
+ ALC280_FIXUP_HP_DOCK_PINS,
++ ALC269_FIXUP_HP_DOCK_GPIO_MIC1_LED,
+ ALC280_FIXUP_HP_9480M,
+ ALC288_FIXUP_DELL_HEADSET_MODE,
+ ALC288_FIXUP_DELL1_MIC_NO_PRESENCE,
+@@ -4864,6 +4879,10 @@ static const struct hda_fixup alc269_fixups[] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc269_fixup_pincfg_no_hp_to_lineout,
+ },
++ [ALC255_FIXUP_LIFEBOOK_U7x7_HEADSET_MIC] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc269_fixup_pincfg_U7x7_headset_mic,
++ },
+ [ALC269_FIXUP_AMIC] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+@@ -5270,6 +5289,16 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC280_FIXUP_HP_GPIO4
+ },
++ [ALC269_FIXUP_HP_DOCK_GPIO_MIC1_LED] = {
++ .type = HDA_FIXUP_PINS,
++ .v.pins = (const struct hda_pintbl[]) {
++ { 0x1b, 0x21011020 }, /* line-out */
++ { 0x18, 0x2181103f }, /* line-in */
++ { },
++ },
++ .chained = true,
++ .chain_id = ALC269_FIXUP_HP_GPIO_MIC1_LED
++ },
+ [ALC280_FIXUP_HP_9480M] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc280_fixup_hp_9480m,
+@@ -5482,6 +5511,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x075b, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x075d, "Dell AIO", ALC298_FIXUP_SPK_VOLUME),
+ SND_PCI_QUIRK(0x1028, 0x0798, "Dell Inspiron 17 7000 Gaming", ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER),
++ SND_PCI_QUIRK(0x1028, 0x082a, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
+@@ -5522,7 +5552,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x103c, 0x2256, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED),
+ SND_PCI_QUIRK(0x103c, 0x2257, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED),
+ SND_PCI_QUIRK(0x103c, 0x2259, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED),
+- SND_PCI_QUIRK(0x103c, 0x225a, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED),
++ SND_PCI_QUIRK(0x103c, 0x225a, "HP", ALC269_FIXUP_HP_DOCK_GPIO_MIC1_LED),
+ SND_PCI_QUIRK(0x103c, 0x2260, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+ SND_PCI_QUIRK(0x103c, 0x2263, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+ SND_PCI_QUIRK(0x103c, 0x2264, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+@@ -5568,6 +5598,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x10cf, 0x159f, "Lifebook E780", ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT),
+ SND_PCI_QUIRK(0x10cf, 0x15dc, "Lifebook T731", ALC269_FIXUP_LIFEBOOK_HP_PIN),
+ SND_PCI_QUIRK(0x10cf, 0x1757, "Lifebook E752", ALC269_FIXUP_LIFEBOOK_HP_PIN),
++ SND_PCI_QUIRK(0x10cf, 0x1629, "Lifebook U7x7", ALC255_FIXUP_LIFEBOOK_U7x7_HEADSET_MIC),
+ SND_PCI_QUIRK(0x10cf, 0x1845, "Lifebook U904", ALC269_FIXUP_LIFEBOOK_EXTMIC),
+ SND_PCI_QUIRK(0x144d, 0xc109, "Samsung Ativ book 9 (NP900X3G)", ALC269_FIXUP_INV_DMIC),
+ SND_PCI_QUIRK(0x1458, 0xfa53, "Gigabyte BXBT-2807", ALC283_FIXUP_BXBT2807_MIC),
+@@ -5684,6 +5715,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ {.id = ALC269_FIXUP_HEADSET_MIC, .name = "headset-mic"},
+ {.id = ALC269_FIXUP_LENOVO_DOCK, .name = "lenovo-dock"},
+ {.id = ALC269_FIXUP_HP_GPIO_LED, .name = "hp-gpio-led"},
++ {.id = ALC269_FIXUP_HP_DOCK_GPIO_MIC1_LED, .name = "hp-dock-gpio-mic1-led"},
+ {.id = ALC269_FIXUP_DELL1_MIC_NO_PRESENCE, .name = "dell-headset-multi"},
+ {.id = ALC269_FIXUP_DELL2_MIC_NO_PRESENCE, .name = "dell-headset-dock"},
+ {.id = ALC283_FIXUP_CHROME_BOOK, .name = "alc283-dac-wcaps"},
+diff --git a/sound/soc/codecs/pcm512x-spi.c b/sound/soc/codecs/pcm512x-spi.c
+index 7b64a9cef704..8adb0912d5f8 100644
+--- a/sound/soc/codecs/pcm512x-spi.c
++++ b/sound/soc/codecs/pcm512x-spi.c
+@@ -71,3 +71,7 @@ static struct spi_driver pcm512x_spi_driver = {
+ };
+
+ module_spi_driver(pcm512x_spi_driver);
++
++MODULE_DESCRIPTION("ASoC PCM512x codec driver - SPI");
++MODULE_AUTHOR("Mark Brown <broonie@kernel.org>");
++MODULE_LICENSE("GPL v2");
+diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
+index d04693e9cf9f..3a98c0910560 100644
+--- a/sound/soc/codecs/twl4030.c
++++ b/sound/soc/codecs/twl4030.c
+@@ -232,7 +232,7 @@ static struct twl4030_codec_data *twl4030_get_pdata(struct snd_soc_codec *codec)
+ struct twl4030_codec_data *pdata = dev_get_platdata(codec->dev);
+ struct device_node *twl4030_codec_node = NULL;
+
+- twl4030_codec_node = of_find_node_by_name(codec->dev->parent->of_node,
++ twl4030_codec_node = of_get_child_by_name(codec->dev->parent->of_node,
+ "codec");
+
+ if (!pdata && twl4030_codec_node) {
+@@ -241,9 +241,11 @@ static struct twl4030_codec_data *twl4030_get_pdata(struct snd_soc_codec *codec)
+ GFP_KERNEL);
+ if (!pdata) {
+ dev_err(codec->dev, "Can not allocate memory\n");
++ of_node_put(twl4030_codec_node);
+ return NULL;
+ }
+ twl4030_setup_pdata_of(pdata, twl4030_codec_node);
++ of_node_put(twl4030_codec_node);
+ }
+
+ return pdata;
+diff --git a/sound/soc/ux500/mop500.c b/sound/soc/ux500/mop500.c
+index 4e0c0e502ade..49a1b8050bc7 100644
+--- a/sound/soc/ux500/mop500.c
++++ b/sound/soc/ux500/mop500.c
+@@ -163,3 +163,7 @@ static struct platform_driver snd_soc_mop500_driver = {
+ };
+
+ module_platform_driver(snd_soc_mop500_driver);
++
++MODULE_LICENSE("GPL v2");
++MODULE_DESCRIPTION("ASoC MOP500 board driver");
++MODULE_AUTHOR("Ola Lilja");
+diff --git a/sound/soc/ux500/ux500_pcm.c b/sound/soc/ux500/ux500_pcm.c
+index 51a66a87305a..b4ab903fca1b 100644
+--- a/sound/soc/ux500/ux500_pcm.c
++++ b/sound/soc/ux500/ux500_pcm.c
+@@ -166,3 +166,8 @@ int ux500_pcm_unregister_platform(struct platform_device *pdev)
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(ux500_pcm_unregister_platform);
++
++MODULE_AUTHOR("Ola Lilja");
++MODULE_AUTHOR("Roger Nilsson");
++MODULE_DESCRIPTION("ASoC UX500 driver");
++MODULE_LICENSE("GPL v2");
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index 2ee449fbe55f..76f7c95b38af 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -343,17 +343,20 @@ static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request,
+ int validx, int *value_ret)
+ {
+ struct snd_usb_audio *chip = cval->head.mixer->chip;
+- unsigned char buf[4 + 3 * sizeof(__u32)]; /* enough space for one range */
++ /* enough space for one range */
++ unsigned char buf[sizeof(__u16) + 3 * sizeof(__u32)];
+ unsigned char *val;
+- int idx = 0, ret, size;
++ int idx = 0, ret, val_size, size;
+ __u8 bRequest;
+
++ val_size = uac2_ctl_value_size(cval->val_type);
++
+ if (request == UAC_GET_CUR) {
+ bRequest = UAC2_CS_CUR;
+- size = uac2_ctl_value_size(cval->val_type);
++ size = val_size;
+ } else {
+ bRequest = UAC2_CS_RANGE;
+- size = sizeof(buf);
++ size = sizeof(__u16) + 3 * val_size;
+ }
+
+ memset(buf, 0, sizeof(buf));
+@@ -386,16 +389,17 @@ error:
+ val = buf + sizeof(__u16);
+ break;
+ case UAC_GET_MAX:
+- val = buf + sizeof(__u16) * 2;
++ val = buf + sizeof(__u16) + val_size;
+ break;
+ case UAC_GET_RES:
+- val = buf + sizeof(__u16) * 3;
++ val = buf + sizeof(__u16) + val_size * 2;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+- *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16)));
++ *value_ret = convert_signed_value(cval,
++ snd_usb_combine_bytes(val, val_size));
+
+ return 0;
+ }
+@@ -2095,20 +2099,25 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid,
+ kctl->private_value = (unsigned long)namelist;
+ kctl->private_free = usb_mixer_selector_elem_free;
+
+- nameid = uac_selector_unit_iSelector(desc);
++ /* check the static mapping table at first */
+ len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
+- if (len)
+- ;
+- else if (nameid)
+- len = snd_usb_copy_string_desc(state, nameid, kctl->id.name,
+- sizeof(kctl->id.name));
+- else
+- len = get_term_name(state, &state->oterm,
+- kctl->id.name, sizeof(kctl->id.name), 0);
+-
+ if (!len) {
+- strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
++ /* no mapping ? */
++ /* if iSelector is given, use it */
++ nameid = uac_selector_unit_iSelector(desc);
++ if (nameid)
++ len = snd_usb_copy_string_desc(state, nameid,
++ kctl->id.name,
++ sizeof(kctl->id.name));
++ /* ... or pick up the terminal name at next */
++ if (!len)
++ len = get_term_name(state, &state->oterm,
++ kctl->id.name, sizeof(kctl->id.name), 0);
++ /* ... or use the fixed string "USB" as the last resort */
++ if (!len)
++ strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
+
++ /* and add the proper suffix */
+ if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR)
+ append_ctl_name(kctl, " Clock Source");
+ else if ((state->oterm.type & 0xff00) == 0x0100)
+diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
+index a51155197277..3351e2f9656d 100644
+--- a/sound/usb/pcm.c
++++ b/sound/usb/pcm.c
+@@ -343,6 +343,15 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
+ ep = 0x81;
+ iface = usb_ifnum_to_if(dev, 2);
+
++ if (!iface || iface->num_altsetting == 0)
++ return -EINVAL;
++
++ alts = &iface->altsetting[1];
++ goto add_sync_ep;
++ case USB_ID(0x1397, 0x0002):
++ ep = 0x81;
++ iface = usb_ifnum_to_if(dev, 1);
++
+ if (!iface || iface->num_altsetting == 0)
+ return -EINVAL;
+
+diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c
+index ba5efa4710b5..d464305c7c6c 100644
+--- a/tools/perf/bench/numa.c
++++ b/tools/perf/bench/numa.c
+@@ -203,6 +203,47 @@ static const char * const numa_usage[] = {
+ NULL
+ };
+
++/*
++ * To get number of numa nodes present.
++ */
++static int nr_numa_nodes(void)
++{
++ int i, nr_nodes = 0;
++
++ for (i = 0; i < g->p.nr_nodes; i++) {
++ if (numa_bitmask_isbitset(numa_nodes_ptr, i))
++ nr_nodes++;
++ }
++
++ return nr_nodes;
++}
++
++/*
++ * To check if given numa node is present.
++ */
++static int is_node_present(int node)
++{
++ return numa_bitmask_isbitset(numa_nodes_ptr, node);
++}
++
++/*
++ * To check given numa node has cpus.
++ */
++static bool node_has_cpus(int node)
++{
++ struct bitmask *cpu = numa_allocate_cpumask();
++ unsigned int i;
++
++ if (cpu && !numa_node_to_cpus(node, cpu)) {
++ for (i = 0; i < cpu->size; i++) {
++ if (numa_bitmask_isbitset(cpu, i))
++ return true;
++ }
++ }
++
++ return false; /* lets fall back to nocpus safely */
++}
++
+ static cpu_set_t bind_to_cpu(int target_cpu)
+ {
+ cpu_set_t orig_mask, mask;
+@@ -231,12 +272,12 @@ static cpu_set_t bind_to_cpu(int target_cpu)
+
+ static cpu_set_t bind_to_node(int target_node)
+ {
+- int cpus_per_node = g->p.nr_cpus/g->p.nr_nodes;
++ int cpus_per_node = g->p.nr_cpus / nr_numa_nodes();
+ cpu_set_t orig_mask, mask;
+ int cpu;
+ int ret;
+
+- BUG_ON(cpus_per_node*g->p.nr_nodes != g->p.nr_cpus);
++ BUG_ON(cpus_per_node * nr_numa_nodes() != g->p.nr_cpus);
+ BUG_ON(!cpus_per_node);
+
+ ret = sched_getaffinity(0, sizeof(orig_mask), &orig_mask);
+@@ -636,7 +677,7 @@ static int parse_setup_node_list(void)
+ int i;
+
+ for (i = 0; i < mul; i++) {
+- if (t >= g->p.nr_tasks) {
++ if (t >= g->p.nr_tasks || !node_has_cpus(bind_node)) {
+ printf("\n# NOTE: ignoring bind NODEs starting at NODE#%d\n", bind_node);
+ goto out;
+ }
+@@ -951,6 +992,8 @@ static void calc_convergence(double runtime_ns_max, double *convergence)
+ sum = 0;
+
+ for (node = 0; node < g->p.nr_nodes; node++) {
++ if (!is_node_present(node))
++ continue;
+ nr = nodes[node];
+ nr_min = min(nr, nr_min);
+ nr_max = max(nr, nr_max);
+@@ -971,8 +1014,11 @@ static void calc_convergence(double runtime_ns_max, double *convergence)
+ process_groups = 0;
+
+ for (node = 0; node < g->p.nr_nodes; node++) {
+- int processes = count_node_processes(node);
++ int processes;
+
++ if (!is_node_present(node))
++ continue;
++ processes = count_node_processes(node);
+ nr = nodes[node];
+ tprintf(" %2d/%-2d", nr, processes);
+
+@@ -1270,7 +1316,7 @@ static void print_summary(void)
+
+ printf("\n ###\n");
+ printf(" # %d %s will execute (on %d nodes, %d CPUs):\n",
+- g->p.nr_tasks, g->p.nr_tasks == 1 ? "task" : "tasks", g->p.nr_nodes, g->p.nr_cpus);
++ g->p.nr_tasks, g->p.nr_tasks == 1 ? "task" : "tasks", nr_numa_nodes(), g->p.nr_cpus);
+ printf(" # %5dx %5ldMB global shared mem operations\n",
+ g->p.nr_loops, g->p.bytes_global/1024/1024);
+ printf(" # %5dx %5ldMB process shared mem operations\n",
+diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
+index 65e138019b99..866b911bcda5 100644
+--- a/tools/perf/builtin-top.c
++++ b/tools/perf/builtin-top.c
+@@ -69,6 +69,7 @@
+ #include <linux/types.h>
+
+ static volatile int done;
++static volatile int resize;
+
+ #define HEADER_LINE_NR 5
+
+@@ -78,10 +79,13 @@ static void perf_top__update_print_entries(struct perf_top *top)
+ }
+
+ static void perf_top__sig_winch(int sig __maybe_unused,
+- siginfo_t *info __maybe_unused, void *arg)
++ siginfo_t *info __maybe_unused, void *arg __maybe_unused)
+ {
+- struct perf_top *top = arg;
++ resize = 1;
++}
+
++static void perf_top__resize(struct perf_top *top)
++{
+ get_term_dimensions(&top->winsize);
+ perf_top__update_print_entries(top);
+ }
+@@ -460,7 +464,7 @@ static bool perf_top__handle_keypress(struct perf_top *top, int c)
+ .sa_sigaction = perf_top__sig_winch,
+ .sa_flags = SA_SIGINFO,
+ };
+- perf_top__sig_winch(SIGWINCH, NULL, top);
++ perf_top__resize(top);
+ sigaction(SIGWINCH, &act, NULL);
+ } else {
+ signal(SIGWINCH, SIG_DFL);
+@@ -998,6 +1002,11 @@ static int __cmd_top(struct perf_top *top)
+
+ if (hits == top->samples)
+ ret = perf_evlist__poll(top->evlist, 100);
++
++ if (resize) {
++ perf_top__resize(top);
++ resize = 0;
++ }
+ }
+
+ ret = 0;
+diff --git a/tools/usb/usbip/libsrc/usbip_common.c b/tools/usb/usbip/libsrc/usbip_common.c
+index ac73710473de..8000445ff884 100644
+--- a/tools/usb/usbip/libsrc/usbip_common.c
++++ b/tools/usb/usbip/libsrc/usbip_common.c
+@@ -215,9 +215,16 @@ int read_usb_interface(struct usbip_usb_device *udev, int i,
+ struct usbip_usb_interface *uinf)
+ {
+ char busid[SYSFS_BUS_ID_SIZE];
++ int size;
+ struct udev_device *sif;
+
+- sprintf(busid, "%s:%d.%d", udev->busid, udev->bConfigurationValue, i);
++ size = snprintf(busid, sizeof(busid), "%s:%d.%d",
++ udev->busid, udev->bConfigurationValue, i);
++ if (size < 0 || (unsigned int)size >= sizeof(busid)) {
++ err("busid length %i >= %lu or < 0", size,
++ (unsigned long)sizeof(busid));
++ return -1;
++ }
+
+ sif = udev_device_new_from_subsystem_sysname(udev_context, "usb", busid);
+ if (!sif) {
+diff --git a/tools/usb/usbip/libsrc/usbip_host_driver.c b/tools/usb/usbip/libsrc/usbip_host_driver.c
+index bef08d5c44e8..071b9ce99420 100644
+--- a/tools/usb/usbip/libsrc/usbip_host_driver.c
++++ b/tools/usb/usbip/libsrc/usbip_host_driver.c
+@@ -39,13 +39,19 @@ struct udev *udev_context;
+ static int32_t read_attr_usbip_status(struct usbip_usb_device *udev)
+ {
+ char status_attr_path[SYSFS_PATH_MAX];
++ int size;
+ int fd;
+ int length;
+ char status;
+ int value = 0;
+
+- snprintf(status_attr_path, SYSFS_PATH_MAX, "%s/usbip_status",
+- udev->path);
++ size = snprintf(status_attr_path, SYSFS_PATH_MAX, "%s/usbip_status",
++ udev->path);
++ if (size < 0 || (unsigned int)size >= sizeof(status_attr_path)) {
++ err("usbip_status path length %i >= %lu or < 0", size,
++ (unsigned long)sizeof(status_attr_path));
++ return -1;
++ }
+
+ fd = open(status_attr_path, O_RDONLY);
+ if (fd < 0) {
+@@ -225,6 +231,7 @@ int usbip_host_export_device(struct usbip_exported_device *edev, int sockfd)
+ {
+ char attr_name[] = "usbip_sockfd";
+ char sockfd_attr_path[SYSFS_PATH_MAX];
++ int size;
+ char sockfd_buff[30];
+ int ret;
+
+@@ -244,10 +251,20 @@ int usbip_host_export_device(struct usbip_exported_device *edev, int sockfd)
+ }
+
+ /* only the first interface is true */
+- snprintf(sockfd_attr_path, sizeof(sockfd_attr_path), "%s/%s",
+- edev->udev.path, attr_name);
++ size = snprintf(sockfd_attr_path, sizeof(sockfd_attr_path), "%s/%s",
++ edev->udev.path, attr_name);
++ if (size < 0 || (unsigned int)size >= sizeof(sockfd_attr_path)) {
++ err("exported device path length %i >= %lu or < 0", size,
++ (unsigned long)sizeof(sockfd_attr_path));
++ return -1;
++ }
+
+- snprintf(sockfd_buff, sizeof(sockfd_buff), "%d\n", sockfd);
++ size = snprintf(sockfd_buff, sizeof(sockfd_buff), "%d\n", sockfd);
++ if (size < 0 || (unsigned int)size >= sizeof(sockfd_buff)) {
++ err("socket length %i >= %lu or < 0", size,
++ (unsigned long)sizeof(sockfd_buff));
++ return -1;
++ }
+
+ ret = write_sysfs_attribute(sockfd_attr_path, sockfd_buff,
+ strlen(sockfd_buff));
+diff --git a/tools/usb/usbip/libsrc/vhci_driver.c b/tools/usb/usbip/libsrc/vhci_driver.c
+index ad9204773533..1274f326242c 100644
+--- a/tools/usb/usbip/libsrc/vhci_driver.c
++++ b/tools/usb/usbip/libsrc/vhci_driver.c
+@@ -55,12 +55,12 @@ static int parse_status(const char *value)
+
+ while (*c != '\0') {
+ int port, status, speed, devid;
+- unsigned long socket;
++ int sockfd;
+ char lbusid[SYSFS_BUS_ID_SIZE];
+
+- ret = sscanf(c, "%d %d %d %x %lx %31s\n",
++ ret = sscanf(c, "%d %d %d %x %u %31s\n",
+ &port, &status, &speed,
+- &devid, &socket, lbusid);
++ &devid, &sockfd, lbusid);
+
+ if (ret < 5) {
+ dbg("sscanf failed: %d", ret);
+@@ -69,7 +69,7 @@ static int parse_status(const char *value)
+
+ dbg("port %d status %d speed %d devid %x",
+ port, status, speed, devid);
+- dbg("socket %lx lbusid %s", socket, lbusid);
++ dbg("sockfd %u lbusid %s", sockfd, lbusid);
+
+
+ /* if a device is connected, look at it */
+diff --git a/tools/usb/usbip/src/usbip.c b/tools/usb/usbip/src/usbip.c
+index d7599d943529..73d8eee8130b 100644
+--- a/tools/usb/usbip/src/usbip.c
++++ b/tools/usb/usbip/src/usbip.c
+@@ -176,6 +176,8 @@ int main(int argc, char *argv[])
+ break;
+ case '?':
+ printf("usbip: invalid option\n");
++ /* Terminate after printing error */
++ /* FALLTHRU */
+ default:
+ usbip_usage();
+ goto out;
+diff --git a/tools/usb/usbip/src/usbip_bind.c b/tools/usb/usbip/src/usbip_bind.c
+index fa46141ae68b..e121cfb1746a 100644
+--- a/tools/usb/usbip/src/usbip_bind.c
++++ b/tools/usb/usbip/src/usbip_bind.c
+@@ -144,6 +144,7 @@ static int bind_device(char *busid)
+ int rc;
+ struct udev *udev;
+ struct udev_device *dev;
++ const char *devpath;
+
+ /* Check whether the device with this bus ID exists. */
+ udev = udev_new();
+@@ -152,8 +153,16 @@ static int bind_device(char *busid)
+ err("device with the specified bus ID does not exist");
+ return -1;
+ }
++ devpath = udev_device_get_devpath(dev);
+ udev_unref(udev);
+
++ /* If the device is already attached to vhci_hcd - bail out */
++ if (strstr(devpath, USBIP_VHCI_DRV_NAME)) {
++ err("bind loop detected: device: %s is attached to %s\n",
++ devpath, USBIP_VHCI_DRV_NAME);
++ return -1;
++ }
++
+ rc = unbind_other(busid);
+ if (rc == UNBIND_ST_FAILED) {
+ err("could not unbind driver from device on busid %s", busid);
+diff --git a/tools/usb/usbip/src/usbip_list.c b/tools/usb/usbip/src/usbip_list.c
+index d5ce34a410e7..ac6081c3db82 100644
+--- a/tools/usb/usbip/src/usbip_list.c
++++ b/tools/usb/usbip/src/usbip_list.c
+@@ -180,6 +180,7 @@ static int list_devices(bool parsable)
+ const char *busid;
+ char product_name[128];
+ int ret = -1;
++ const char *devpath;
+
+ /* Create libudev context. */
+ udev = udev_new();
+@@ -202,6 +203,14 @@ static int list_devices(bool parsable)
+ path = udev_list_entry_get_name(dev_list_entry);
+ dev = udev_device_new_from_syspath(udev, path);
+
++ /* Ignore devices attached to vhci_hcd */
++ devpath = udev_device_get_devpath(dev);
++ if (strstr(devpath, USBIP_VHCI_DRV_NAME)) {
++ dbg("Skip the device %s already attached to %s\n",
++ devpath, USBIP_VHCI_DRV_NAME);
++ continue;
++ }
++
+ /* Get device information. */
+ idVendor = udev_device_get_sysattr_value(dev, "idVendor");
+ idProduct = udev_device_get_sysattr_value(dev, "idProduct");
+diff --git a/tools/usb/usbip/src/utils.c b/tools/usb/usbip/src/utils.c
+index 2b3d6d235015..3d7b42e77299 100644
+--- a/tools/usb/usbip/src/utils.c
++++ b/tools/usb/usbip/src/utils.c
+@@ -30,6 +30,7 @@ int modify_match_busid(char *busid, int add)
+ char command[SYSFS_BUS_ID_SIZE + 4];
+ char match_busid_attr_path[SYSFS_PATH_MAX];
+ int rc;
++ int cmd_size;
+
+ snprintf(match_busid_attr_path, sizeof(match_busid_attr_path),
+ "%s/%s/%s/%s/%s/%s", SYSFS_MNT_PATH, SYSFS_BUS_NAME,
+@@ -37,12 +38,14 @@ int modify_match_busid(char *busid, int add)
+ attr_name);
+
+ if (add)
+- snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s", busid);
++ cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s",
++ busid);
+ else
+- snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s", busid);
++ cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s",
++ busid);
+
+ rc = write_sysfs_attribute(match_busid_attr_path, command,
+- sizeof(command));
++ cmd_size);
+ if (rc < 0) {
+ dbg("failed to write match_busid: %s", strerror(errno));
+ return -1;
diff --git a/1050_linux-4.1.51.patch b/1050_linux-4.1.51.patch
new file mode 100644
index 0000000..e7f030a
--- /dev/null
+++ b/1050_linux-4.1.51.patch
@@ -0,0 +1,2698 @@
+diff --git a/Makefile b/Makefile
+index a655f63aedeb..caccc6f16d62 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 50
++SUBLEVEL = 51
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/include/asm/kvm_emulate.h b/arch/arm/include/asm/kvm_emulate.h
+index 642934a5ae9b..fc2acaefafb0 100644
+--- a/arch/arm/include/asm/kvm_emulate.h
++++ b/arch/arm/include/asm/kvm_emulate.h
+@@ -28,6 +28,18 @@
+ unsigned long *vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num);
+ unsigned long *vcpu_spsr(struct kvm_vcpu *vcpu);
+
++static inline unsigned long vcpu_get_reg(struct kvm_vcpu *vcpu,
++ u8 reg_num)
++{
++ return *vcpu_reg(vcpu, reg_num);
++}
++
++static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num,
++ unsigned long val)
++{
++ *vcpu_reg(vcpu, reg_num) = val;
++}
++
+ bool kvm_condition_valid(struct kvm_vcpu *vcpu);
+ void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr);
+ void kvm_inject_undefined(struct kvm_vcpu *vcpu);
+diff --git a/arch/arm/kvm/mmio.c b/arch/arm/kvm/mmio.c
+index 04e5004b34e1..387ee2a11e36 100644
+--- a/arch/arm/kvm/mmio.c
++++ b/arch/arm/kvm/mmio.c
+@@ -115,7 +115,7 @@ int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ trace_kvm_mmio(KVM_TRACE_MMIO_READ, len, run->mmio.phys_addr,
+ &data);
+ data = vcpu_data_host_to_guest(vcpu, data, len);
+- *vcpu_reg(vcpu, vcpu->arch.mmio_decode.rt) = data;
++ vcpu_set_reg(vcpu, vcpu->arch.mmio_decode.rt, data);
+ }
+
+ return 0;
+@@ -186,7 +186,8 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
+ rt = vcpu->arch.mmio_decode.rt;
+
+ if (is_write) {
+- data = vcpu_data_guest_to_host(vcpu, *vcpu_reg(vcpu, rt), len);
++ data = vcpu_data_guest_to_host(vcpu, vcpu_get_reg(vcpu, rt),
++ len);
+
+ trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, len, fault_ipa, &data);
+ mmio_write_buf(data_buf, len, data);
+diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
+index 97473168d6b6..60ad79edbc3c 100644
+--- a/arch/arm/mach-mvebu/Kconfig
++++ b/arch/arm/mach-mvebu/Kconfig
+@@ -37,7 +37,7 @@ config MACH_ARMADA_370
+ config MACH_ARMADA_375
+ bool "Marvell Armada 375 boards" if ARCH_MULTI_V7
+ select ARM_ERRATA_720789
+- select ARM_ERRATA_753970
++ select PL310_ERRATA_753970
+ select ARM_GIC
+ select ARMADA_375_CLK
+ select HAVE_ARM_SCU
+@@ -52,7 +52,7 @@ config MACH_ARMADA_375
+ config MACH_ARMADA_38X
+ bool "Marvell Armada 380/385 boards" if ARCH_MULTI_V7
+ select ARM_ERRATA_720789
+- select ARM_ERRATA_753970
++ select PL310_ERRATA_753970
+ select ARM_GIC
+ select ARMADA_38X_CLK
+ select HAVE_ARM_SCU
+diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
+index 9ff92050053c..fa7f308c9027 100644
+--- a/arch/arm/mach-omap2/omap-secure.c
++++ b/arch/arm/mach-omap2/omap-secure.c
+@@ -73,6 +73,7 @@ phys_addr_t omap_secure_ram_mempool_base(void)
+ return omap_secure_memblock_base;
+ }
+
++#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
+ u32 omap3_save_secure_ram(void __iomem *addr, int size)
+ {
+ u32 ret;
+@@ -91,6 +92,7 @@ u32 omap3_save_secure_ram(void __iomem *addr, int size)
+
+ return ret;
+ }
++#endif
+
+ /**
+ * rx51_secure_dispatcher: Routine to dispatch secure PPA API calls
+diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
+index 3e3c4c7a5082..0504f1347af0 100644
+--- a/arch/arm64/include/asm/kvm_emulate.h
++++ b/arch/arm64/include/asm/kvm_emulate.h
+@@ -109,6 +109,19 @@ static inline unsigned long *vcpu_reg(const struct kvm_vcpu *vcpu, u8 reg_num)
+ return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.regs[reg_num];
+ }
+
++static inline unsigned long vcpu_get_reg(const struct kvm_vcpu *vcpu,
++ u8 reg_num)
++{
++ return (reg_num == 31) ? 0 : vcpu_gp_regs(vcpu)->regs.regs[reg_num];
++}
++
++static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num,
++ unsigned long val)
++{
++ if (reg_num != 31)
++ vcpu_gp_regs(vcpu)->regs.regs[reg_num] = val;
++}
++
+ /* Get vcpu SPSR for current mode */
+ static inline unsigned long *vcpu_spsr(const struct kvm_vcpu *vcpu)
+ {
+diff --git a/arch/mips/ath25/board.c b/arch/mips/ath25/board.c
+index b8bb78282d6a..7df779f2cb63 100644
+--- a/arch/mips/ath25/board.c
++++ b/arch/mips/ath25/board.c
+@@ -135,6 +135,8 @@ int __init ath25_find_config(phys_addr_t base, unsigned long size)
+ }
+
+ board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
++ if (!board_data)
++ goto error;
+ ath25_board.config = (struct ath25_boarddata *)board_data;
+ memcpy_fromio(board_data, bcfg, 0x100);
+ if (broken_boarddata) {
+diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c
+index 10f762557b92..bacefffee16e 100644
+--- a/arch/mips/cavium-octeon/octeon-irq.c
++++ b/arch/mips/cavium-octeon/octeon-irq.c
+@@ -2242,6 +2242,8 @@ static int __init octeon_irq_init_cib(struct device_node *ciu_node,
+ }
+
+ host_data = kzalloc(sizeof(*host_data), GFP_KERNEL);
++ if (!host_data)
++ return -ENOMEM;
+ raw_spin_lock_init(&host_data->lock);
+
+ addr = of_get_address(ciu_node, 0, NULL, NULL);
+diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
+index 336708ae5c5b..ee306af6f3d9 100644
+--- a/arch/mips/kernel/smp-bmips.c
++++ b/arch/mips/kernel/smp-bmips.c
+@@ -166,11 +166,11 @@ static void bmips_prepare_cpus(unsigned int max_cpus)
+ return;
+ }
+
+- if (request_irq(IPI0_IRQ, bmips_ipi_interrupt, IRQF_PERCPU,
+- "smp_ipi0", NULL))
++ if (request_irq(IPI0_IRQ, bmips_ipi_interrupt,
++ IRQF_PERCPU | IRQF_NO_SUSPEND, "smp_ipi0", NULL))
+ panic("Can't request IPI0 interrupt");
+- if (request_irq(IPI1_IRQ, bmips_ipi_interrupt, IRQF_PERCPU,
+- "smp_ipi1", NULL))
++ if (request_irq(IPI1_IRQ, bmips_ipi_interrupt,
++ IRQF_PERCPU | IRQF_NO_SUSPEND, "smp_ipi1", NULL))
+ panic("Can't request IPI1 interrupt");
+ }
+
+diff --git a/arch/sh/boards/mach-se/770x/setup.c b/arch/sh/boards/mach-se/770x/setup.c
+index 658326f44df8..5e0267624d8d 100644
+--- a/arch/sh/boards/mach-se/770x/setup.c
++++ b/arch/sh/boards/mach-se/770x/setup.c
+@@ -8,6 +8,7 @@
+ */
+ #include <linux/init.h>
+ #include <linux/platform_device.h>
++#include <linux/sh_eth.h>
+ #include <mach-se/mach/se.h>
+ #include <mach-se/mach/mrshpc.h>
+ #include <asm/machvec.h>
+@@ -114,6 +115,11 @@ static struct platform_device heartbeat_device = {
+ #if defined(CONFIG_CPU_SUBTYPE_SH7710) ||\
+ defined(CONFIG_CPU_SUBTYPE_SH7712)
+ /* SH771X Ethernet driver */
++static struct sh_eth_plat_data sh_eth_plat = {
++ .phy = PHY_ID,
++ .phy_interface = PHY_INTERFACE_MODE_MII,
++};
++
+ static struct resource sh_eth0_resources[] = {
+ [0] = {
+ .start = SH_ETH0_BASE,
+@@ -131,7 +137,7 @@ static struct platform_device sh_eth0_device = {
+ .name = "sh771x-ether",
+ .id = 0,
+ .dev = {
+- .platform_data = PHY_ID,
++ .platform_data = &sh_eth_plat,
+ },
+ .num_resources = ARRAY_SIZE(sh_eth0_resources),
+ .resource = sh_eth0_resources,
+@@ -154,7 +160,7 @@ static struct platform_device sh_eth1_device = {
+ .name = "sh771x-ether",
+ .id = 1,
+ .dev = {
+- .platform_data = PHY_ID,
++ .platform_data = &sh_eth_plat,
+ },
+ .num_resources = ARRAY_SIZE(sh_eth1_resources),
+ .resource = sh_eth1_resources,
+diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
+index 8de489937b89..f726068e1804 100644
+--- a/arch/x86/kernel/cpu/mcheck/mce.c
++++ b/arch/x86/kernel/cpu/mcheck/mce.c
+@@ -57,6 +57,9 @@ static DEFINE_MUTEX(mce_chrdev_read_mutex);
+ rcu_read_lock_sched_held() || \
+ lockdep_is_held(&mce_chrdev_read_mutex))
+
++/* sysfs synchronization */
++static DEFINE_MUTEX(mce_sysfs_mutex);
++
+ #define CREATE_TRACE_POINTS
+ #include <trace/events/mce.h>
+
+@@ -2183,6 +2186,7 @@ static ssize_t set_ignore_ce(struct device *s,
+ if (kstrtou64(buf, 0, &new) < 0)
+ return -EINVAL;
+
++ mutex_lock(&mce_sysfs_mutex);
+ if (mca_cfg.ignore_ce ^ !!new) {
+ if (new) {
+ /* disable ce features */
+@@ -2195,6 +2199,8 @@ static ssize_t set_ignore_ce(struct device *s,
+ on_each_cpu(mce_enable_ce, (void *)1, 1);
+ }
+ }
++ mutex_unlock(&mce_sysfs_mutex);
++
+ return size;
+ }
+
+@@ -2207,6 +2213,7 @@ static ssize_t set_cmci_disabled(struct device *s,
+ if (kstrtou64(buf, 0, &new) < 0)
+ return -EINVAL;
+
++ mutex_lock(&mce_sysfs_mutex);
+ if (mca_cfg.cmci_disabled ^ !!new) {
+ if (new) {
+ /* disable cmci */
+@@ -2218,6 +2225,8 @@ static ssize_t set_cmci_disabled(struct device *s,
+ on_each_cpu(mce_enable_ce, NULL, 1);
+ }
+ }
++ mutex_unlock(&mce_sysfs_mutex);
++
+ return size;
+ }
+
+@@ -2225,8 +2234,19 @@ static ssize_t store_int_with_restart(struct device *s,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+ {
+- ssize_t ret = device_store_int(s, attr, buf, size);
++ unsigned long old_check_interval = check_interval;
++ ssize_t ret = device_store_ulong(s, attr, buf, size);
++
++ if (check_interval == old_check_interval)
++ return ret;
++
++ if (check_interval < 1)
++ check_interval = 1;
++
++ mutex_lock(&mce_sysfs_mutex);
+ mce_restart();
++ mutex_unlock(&mce_sysfs_mutex);
++
+ return ret;
+ }
+
+diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
+index 415480d3ea84..49ab807eca1c 100644
+--- a/arch/x86/kernel/machine_kexec_64.c
++++ b/arch/x86/kernel/machine_kexec_64.c
+@@ -517,6 +517,7 @@ int arch_kexec_apply_relocations_add(const Elf64_Ehdr *ehdr,
+ goto overflow;
+ break;
+ case R_X86_64_PC32:
++ case R_X86_64_PLT32:
+ value -= (u64)address;
+ *(u32 *)location = value;
+ break;
+diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
+index 005c03e93fc5..94779f66bf49 100644
+--- a/arch/x86/kernel/module.c
++++ b/arch/x86/kernel/module.c
+@@ -170,19 +170,28 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
+ case R_X86_64_NONE:
+ break;
+ case R_X86_64_64:
++ if (*(u64 *)loc != 0)
++ goto invalid_relocation;
+ *(u64 *)loc = val;
+ break;
+ case R_X86_64_32:
++ if (*(u32 *)loc != 0)
++ goto invalid_relocation;
+ *(u32 *)loc = val;
+ if (val != *(u32 *)loc)
+ goto overflow;
+ break;
+ case R_X86_64_32S:
++ if (*(s32 *)loc != 0)
++ goto invalid_relocation;
+ *(s32 *)loc = val;
+ if ((s64)val != *(s32 *)loc)
+ goto overflow;
+ break;
+ case R_X86_64_PC32:
++ case R_X86_64_PLT32:
++ if (*(u32 *)loc != 0)
++ goto invalid_relocation;
+ val -= (u64)loc;
+ *(u32 *)loc = val;
+ #if 0
+@@ -198,6 +207,11 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
+ }
+ return 0;
+
++invalid_relocation:
++ pr_err("x86/modules: Skipping invalid relocation target, existing value is nonzero for type %d, loc %p, val %Lx\n",
++ (int)ELF64_R_TYPE(rel[i].r_info), loc, val);
++ return -ENOEXEC;
++
+ overflow:
+ pr_err("overflow in relocation type %d val %Lx\n",
+ (int)ELF64_R_TYPE(rel[i].r_info), val);
+diff --git a/arch/x86/lib/checksum_32.S b/arch/x86/lib/checksum_32.S
+index b7518368492a..9bc944a91274 100644
+--- a/arch/x86/lib/checksum_32.S
++++ b/arch/x86/lib/checksum_32.S
+@@ -29,8 +29,7 @@
+ #include <asm/dwarf2.h>
+ #include <asm/errno.h>
+ #include <asm/asm.h>
+-#include <asm/nospec-branch.h>
+-
++
+ /*
+ * computes a partial checksum, e.g. for TCP/UDP fragments
+ */
+@@ -160,7 +159,7 @@ ENTRY(csum_partial)
+ negl %ebx
+ lea 45f(%ebx,%ebx,2), %ebx
+ testl %esi, %esi
+- JMP_NOSPEC %ebx
++ jmp *%ebx
+
+ # Handle 2-byte-aligned regions
+ 20: addw (%esi), %ax
+@@ -447,7 +446,7 @@ ENTRY(csum_partial_copy_generic)
+ andl $-32,%edx
+ lea 3f(%ebx,%ebx), %ebx
+ testl %esi, %esi
+- JMP_NOSPEC %ebx
++ jmp *%ebx
+ 1: addl $64,%esi
+ addl $64,%edi
+ SRC(movb -32(%edx),%bl) ; SRC(movb (%edx),%bl)
+diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
+index 73eb7fd4aec4..5b6c8486a0be 100644
+--- a/arch/x86/tools/relocs.c
++++ b/arch/x86/tools/relocs.c
+@@ -769,9 +769,12 @@ static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym,
+ break;
+
+ case R_X86_64_PC32:
++ case R_X86_64_PLT32:
+ /*
+ * PC relative relocations don't need to be adjusted unless
+ * referencing a percpu symbol.
++ *
++ * NB: R_X86_64_PLT32 can be treated as R_X86_64_PC32.
+ */
+ if (is_percpu_sym(sym, symname))
+ add_reloc(&relocs32neg, offset);
+diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
+index 7104d9e1b5f9..4d1cc6982518 100644
+--- a/block/blk-cgroup.c
++++ b/block/blk-cgroup.c
+@@ -870,10 +870,8 @@ int blkcg_init_queue(struct request_queue *q)
+ if (preloaded)
+ radix_tree_preload_end();
+
+- if (IS_ERR(blkg)) {
+- blkg_free(new_blkg);
++ if (IS_ERR(blkg))
+ return PTR_ERR(blkg);
+- }
+
+ q->root_blkg = blkg;
+ q->root_rl.blkg = blkg;
+diff --git a/drivers/block/loop.c b/drivers/block/loop.c
+index b5dbce192c6b..9e72be28ee9f 100644
+--- a/drivers/block/loop.c
++++ b/drivers/block/loop.c
+@@ -207,7 +207,7 @@ static int lo_write_bvec(struct file *file, struct bio_vec *bvec, loff_t *ppos)
+ struct iov_iter i;
+ ssize_t bw;
+
+- iov_iter_bvec(&i, ITER_BVEC, bvec, 1, bvec->bv_len);
++ iov_iter_bvec(&i, ITER_BVEC | WRITE, bvec, 1, bvec->bv_len);
+
+ file_start_write(file);
+ bw = vfs_iter_write(file, &i, ppos);
+diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c
+index 8d626784cd8d..49e4040eeb55 100644
+--- a/drivers/char/tpm/st33zp24/st33zp24.c
++++ b/drivers/char/tpm/st33zp24/st33zp24.c
+@@ -485,7 +485,7 @@ static int st33zp24_recv(struct tpm_chip *chip, unsigned char *buf,
+ size_t count)
+ {
+ int size = 0;
+- int expected;
++ u32 expected;
+
+ if (!chip)
+ return -EBUSY;
+@@ -502,7 +502,7 @@ static int st33zp24_recv(struct tpm_chip *chip, unsigned char *buf,
+ }
+
+ expected = be32_to_cpu(*(__be32 *)(buf + 2));
+- if (expected > count) {
++ if (expected > count || expected < TPM_HEADER_SIZE) {
+ size = -EIO;
+ goto out;
+ }
+diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c
+index 33c5f360ab01..ff9ed941862a 100644
+--- a/drivers/char/tpm/tpm_i2c_infineon.c
++++ b/drivers/char/tpm/tpm_i2c_infineon.c
+@@ -436,7 +436,8 @@ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)
+ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+ {
+ int size = 0;
+- int expected, status;
++ int status;
++ u32 expected;
+
+ if (count < TPM_HEADER_SIZE) {
+ size = -EIO;
+@@ -451,7 +452,7 @@ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+ }
+
+ expected = be32_to_cpu(*(__be32 *)(buf + 2));
+- if ((size_t) expected > count) {
++ if (((size_t) expected > count) || (expected < TPM_HEADER_SIZE)) {
+ size = -EIO;
+ goto out;
+ }
+diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
+index eac6dc93589f..134cef873aeb 100644
+--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
++++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
+@@ -275,7 +275,11 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+ struct device *dev = chip->pdev;
+ struct i2c_client *client = to_i2c_client(dev);
+ s32 rc;
+- int expected, status, burst_count, retries, size = 0;
++ int status;
++ int burst_count;
++ int retries;
++ int size = 0;
++ u32 expected;
+
+ if (count < TPM_HEADER_SIZE) {
+ i2c_nuvoton_ready(chip); /* return to idle */
+@@ -317,7 +321,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+ * to machine native
+ */
+ expected = be32_to_cpu(*(__be32 *) (buf + 2));
+- if (expected > count) {
++ if (expected > count || expected < size) {
+ dev_err(dev, "%s() expected > count\n", __func__);
+ size = -EIO;
+ continue;
+diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c
+index 733aa5153e74..e23fd9a9b8c4 100644
+--- a/drivers/cpufreq/s3c24xx-cpufreq.c
++++ b/drivers/cpufreq/s3c24xx-cpufreq.c
+@@ -364,7 +364,13 @@ struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name)
+ static int s3c_cpufreq_init(struct cpufreq_policy *policy)
+ {
+ policy->clk = clk_arm;
+- return cpufreq_generic_init(policy, ftab, cpu_cur.info->latency);
++
++ policy->cpuinfo.transition_latency = cpu_cur.info->latency;
++
++ if (ftab)
++ return cpufreq_table_validate_and_show(policy, ftab);
++
++ return 0;
+ }
+
+ static int __init s3c_cpufreq_initclks(void)
+diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
+index 2bf5fcb0062a..f80c719642b4 100644
+--- a/drivers/gpu/drm/radeon/cik.c
++++ b/drivers/gpu/drm/radeon/cik.c
+@@ -3574,35 +3574,8 @@ static void cik_gpu_init(struct radeon_device *rdev)
+ case CHIP_KAVERI:
+ rdev->config.cik.max_shader_engines = 1;
+ rdev->config.cik.max_tile_pipes = 4;
+- if ((rdev->pdev->device == 0x1304) ||
+- (rdev->pdev->device == 0x1305) ||
+- (rdev->pdev->device == 0x130C) ||
+- (rdev->pdev->device == 0x130F) ||
+- (rdev->pdev->device == 0x1310) ||
+- (rdev->pdev->device == 0x1311) ||
+- (rdev->pdev->device == 0x131C)) {
+- rdev->config.cik.max_cu_per_sh = 8;
+- rdev->config.cik.max_backends_per_se = 2;
+- } else if ((rdev->pdev->device == 0x1309) ||
+- (rdev->pdev->device == 0x130A) ||
+- (rdev->pdev->device == 0x130D) ||
+- (rdev->pdev->device == 0x1313) ||
+- (rdev->pdev->device == 0x131D)) {
+- rdev->config.cik.max_cu_per_sh = 6;
+- rdev->config.cik.max_backends_per_se = 2;
+- } else if ((rdev->pdev->device == 0x1306) ||
+- (rdev->pdev->device == 0x1307) ||
+- (rdev->pdev->device == 0x130B) ||
+- (rdev->pdev->device == 0x130E) ||
+- (rdev->pdev->device == 0x1315) ||
+- (rdev->pdev->device == 0x1318) ||
+- (rdev->pdev->device == 0x131B)) {
+- rdev->config.cik.max_cu_per_sh = 4;
+- rdev->config.cik.max_backends_per_se = 1;
+- } else {
+- rdev->config.cik.max_cu_per_sh = 3;
+- rdev->config.cik.max_backends_per_se = 1;
+- }
++ rdev->config.cik.max_cu_per_sh = 8;
++ rdev->config.cik.max_backends_per_se = 2;
+ rdev->config.cik.max_sh_per_se = 1;
+ rdev->config.cik.max_texture_channel_caches = 4;
+ rdev->config.cik.max_gprs = 256;
+diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
+index 5d8dfe027b30..75d51ec98e06 100644
+--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
++++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
+@@ -818,6 +818,8 @@ int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages)
+ pr_info("Initializing pool allocator\n");
+
+ _manager = kzalloc(sizeof(*_manager), GFP_KERNEL);
++ if (!_manager)
++ return -ENOMEM;
+
+ ttm_page_pool_init_locked(&_manager->wc_pool, GFP_HIGHUSER, "wc");
+
+diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
+index 81dd84d0b68b..9e7dd06031ae 100644
+--- a/drivers/infiniband/core/ucma.c
++++ b/drivers/infiniband/core/ucma.c
+@@ -1050,6 +1050,9 @@ static ssize_t ucma_init_qp_attr(struct ucma_file *file,
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
++ if (cmd.qp_state > IB_QPS_ERR)
++ return -EINVAL;
++
+ ctx = ucma_get_ctx(file, cmd.id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+@@ -1187,6 +1190,9 @@ static ssize_t ucma_set_option(struct ucma_file *file, const char __user *inbuf,
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
++ if (unlikely(cmd.optval > KMALLOC_MAX_SIZE))
++ return -EINVAL;
++
+ optval = memdup_user((void __user *) (unsigned long) cmd.optval,
+ cmd.optlen);
+ if (IS_ERR(optval)) {
+diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
+index 2ee6b1051975..ca920c633f25 100644
+--- a/drivers/infiniband/hw/mlx5/cq.c
++++ b/drivers/infiniband/hw/mlx5/cq.c
+@@ -959,7 +959,12 @@ static int resize_user(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq,
+ if (ucmd.reserved0 || ucmd.reserved1)
+ return -EINVAL;
+
+- umem = ib_umem_get(context, ucmd.buf_addr, entries * ucmd.cqe_size,
++ /* check multiplication overflow */
++ if (ucmd.cqe_size && SIZE_MAX / ucmd.cqe_size <= entries - 1)
++ return -EINVAL;
++
++ umem = ib_umem_get(context, ucmd.buf_addr,
++ (size_t)ucmd.cqe_size * entries,
+ IB_ACCESS_LOCAL_WRITE, 1);
+ if (IS_ERR(umem)) {
+ err = PTR_ERR(umem);
+diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
+index b370a59cb759..bfa9792b3184 100644
+--- a/drivers/input/keyboard/matrix_keypad.c
++++ b/drivers/input/keyboard/matrix_keypad.c
+@@ -216,8 +216,10 @@ static void matrix_keypad_stop(struct input_dev *dev)
+ {
+ struct matrix_keypad *keypad = input_get_drvdata(dev);
+
++ spin_lock_irq(&keypad->lock);
+ keypad->stopped = true;
+- mb();
++ spin_unlock_irq(&keypad->lock);
++
+ flush_work(&keypad->work.work);
+ /*
+ * matrix_keypad_scan() will leave IRQs enabled;
+diff --git a/drivers/input/keyboard/tca8418_keypad.c b/drivers/input/keyboard/tca8418_keypad.c
+index 5c4f7f8f2c20..05c3f25dd8c2 100644
+--- a/drivers/input/keyboard/tca8418_keypad.c
++++ b/drivers/input/keyboard/tca8418_keypad.c
+@@ -189,8 +189,6 @@ static void tca8418_read_keypad(struct tca8418_keypad *keypad_data)
+ input_event(input, EV_MSC, MSC_SCAN, code);
+ input_report_key(input, keymap[code], state);
+
+- /* Read for next loop */
+- error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, ®);
+ } while (1);
+
+ input_sync(input);
+diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
+index 9886dace5ad2..ba6db252e1cb 100644
+--- a/drivers/leds/led-core.c
++++ b/drivers/leds/led-core.c
+@@ -76,7 +76,7 @@ void led_blink_set(struct led_classdev *led_cdev,
+ unsigned long *delay_on,
+ unsigned long *delay_off)
+ {
+- del_timer_sync(&led_cdev->blink_timer);
++ led_stop_software_blink(led_cdev);
+
+ led_cdev->flags &= ~LED_BLINK_ONESHOT;
+ led_cdev->flags &= ~LED_BLINK_ONESHOT_STOP;
+diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
+index e8b1120f486d..eef3e64ca0a8 100644
+--- a/drivers/leds/led-triggers.c
++++ b/drivers/leds/led-triggers.c
+@@ -88,21 +88,23 @@ ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
+ down_read(&led_cdev->trigger_lock);
+
+ if (!led_cdev->trigger)
+- len += sprintf(buf+len, "[none] ");
++ len += scnprintf(buf+len, PAGE_SIZE - len, "[none] ");
+ else
+- len += sprintf(buf+len, "none ");
++ len += scnprintf(buf+len, PAGE_SIZE - len, "none ");
+
+ list_for_each_entry(trig, &trigger_list, next_trig) {
+ if (led_cdev->trigger && !strcmp(led_cdev->trigger->name,
+ trig->name))
+- len += sprintf(buf+len, "[%s] ", trig->name);
++ len += scnprintf(buf+len, PAGE_SIZE - len, "[%s] ",
++ trig->name);
+ else
+- len += sprintf(buf+len, "%s ", trig->name);
++ len += scnprintf(buf+len, PAGE_SIZE - len, "%s ",
++ trig->name);
+ }
+ up_read(&led_cdev->trigger_lock);
+ up_read(&triggers_list_lock);
+
+- len += sprintf(len+buf, "\n");
++ len += scnprintf(len+buf, PAGE_SIZE - len, "\n");
+ return len;
+ }
+ EXPORT_SYMBOL_GPL(led_trigger_show);
+diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
+index 6f7bc8a8674b..b8013e386c76 100644
+--- a/drivers/md/bcache/super.c
++++ b/drivers/md/bcache/super.c
+@@ -966,6 +966,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c)
+ uint32_t rtime = cpu_to_le32(get_seconds());
+ struct uuid_entry *u;
+ char buf[BDEVNAME_SIZE];
++ struct cached_dev *exist_dc, *t;
+
+ bdevname(dc->bdev, buf);
+
+@@ -989,6 +990,16 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c)
+ return -EINVAL;
+ }
+
++ /* Check whether already attached */
++ list_for_each_entry_safe(exist_dc, t, &c->cached_devs, list) {
++ if (!memcmp(dc->sb.uuid, exist_dc->sb.uuid, 16)) {
++ pr_err("Tried to attach %s but duplicate UUID already attached",
++ buf);
++
++ return -EINVAL;
++ }
++ }
++
+ u = uuid_find(c, dc->sb.uuid);
+
+ if (u &&
+diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
+index 74adcd2c967e..01d7b5785b8e 100644
+--- a/drivers/md/dm-io.c
++++ b/drivers/md/dm-io.c
+@@ -299,6 +299,7 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
+ else if (rw & REQ_WRITE_SAME)
+ special_cmd_max_sectors = q->limits.max_write_same_sectors;
+ if ((rw & (REQ_DISCARD | REQ_WRITE_SAME)) && special_cmd_max_sectors == 0) {
++ atomic_inc(&io->count);
+ dec_count(io, region, -EOPNOTSUPP);
+ return;
+ }
+diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+index 1b8f3500e6d2..d25f2563ffda 100644
+--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
++++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+@@ -1029,9 +1029,6 @@ static int gpmi_ecc_read_page(struct mtd_info *mtd, struct nand_chip *chip,
+ return ret;
+ }
+
+- /* handle the block mark swapping */
+- block_mark_swapping(this, payload_virt, auxiliary_virt);
+-
+ /* Loop over status bytes, accumulating ECC status. */
+ status = auxiliary_virt + nfc_geo->auxiliary_status_offset;
+
+@@ -1047,6 +1044,9 @@ static int gpmi_ecc_read_page(struct mtd_info *mtd, struct nand_chip *chip,
+ max_bitflips = max_t(unsigned int, max_bitflips, *status);
+ }
+
++ /* handle the block mark swapping */
++ block_mark_swapping(this, buf, auxiliary_virt);
++
+ if (oob_required) {
+ /*
+ * It's time to deliver the OOB bytes. See gpmi_ecc_read_oob()
+diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
+index 812ecf2d253a..9965acb8aca0 100644
+--- a/drivers/mtd/ubi/vmt.c
++++ b/drivers/mtd/ubi/vmt.c
+@@ -310,6 +310,12 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
+ vol->last_eb_bytes = vol->usable_leb_size;
+ }
+
++ /* Make volume "available" before it becomes accessible via sysfs */
++ spin_lock(&ubi->volumes_lock);
++ ubi->volumes[vol_id] = vol;
++ ubi->vol_count += 1;
++ spin_unlock(&ubi->volumes_lock);
++
+ /* Register character device for the volume */
+ cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
+ vol->cdev.owner = THIS_MODULE;
+@@ -352,11 +358,6 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
+ if (err)
+ goto out_sysfs;
+
+- spin_lock(&ubi->volumes_lock);
+- ubi->volumes[vol_id] = vol;
+- ubi->vol_count += 1;
+- spin_unlock(&ubi->volumes_lock);
+-
+ ubi_volume_notify(ubi, vol, UBI_VOLUME_ADDED);
+ self_check_volumes(ubi);
+ return err;
+@@ -376,6 +377,10 @@ out_sysfs:
+ out_cdev:
+ cdev_del(&vol->cdev);
+ out_mapping:
++ spin_lock(&ubi->volumes_lock);
++ ubi->volumes[vol_id] = NULL;
++ ubi->vol_count -= 1;
++ spin_unlock(&ubi->volumes_lock);
+ if (do_free)
+ kfree(vol->eba_tbl);
+ out_acc:
+diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c
+index abe1eabc0171..9cc5daed13ed 100644
+--- a/drivers/net/ethernet/arc/emac_main.c
++++ b/drivers/net/ethernet/arc/emac_main.c
+@@ -250,39 +250,48 @@ static int arc_emac_rx(struct net_device *ndev, int budget)
+ continue;
+ }
+
+- pktlen = info & LEN_MASK;
+- stats->rx_packets++;
+- stats->rx_bytes += pktlen;
+- skb = rx_buff->skb;
+- skb_put(skb, pktlen);
+- skb->dev = ndev;
+- skb->protocol = eth_type_trans(skb, ndev);
+-
+- dma_unmap_single(&ndev->dev, dma_unmap_addr(rx_buff, addr),
+- dma_unmap_len(rx_buff, len), DMA_FROM_DEVICE);
+-
+- /* Prepare the BD for next cycle */
+- rx_buff->skb = netdev_alloc_skb_ip_align(ndev,
+- EMAC_BUFFER_SIZE);
+- if (unlikely(!rx_buff->skb)) {
++ /* Prepare the BD for next cycle. netif_receive_skb()
++ * only if new skb was allocated and mapped to avoid holes
++ * in the RX fifo.
++ */
++ skb = netdev_alloc_skb_ip_align(ndev, EMAC_BUFFER_SIZE);
++ if (unlikely(!skb)) {
++ if (net_ratelimit())
++ netdev_err(ndev, "cannot allocate skb\n");
++ /* Return ownership to EMAC */
++ rxbd->info = cpu_to_le32(FOR_EMAC | EMAC_BUFFER_SIZE);
+ stats->rx_errors++;
+- /* Because receive_skb is below, increment rx_dropped */
+ stats->rx_dropped++;
+ continue;
+ }
+
+- /* receive_skb only if new skb was allocated to avoid holes */
+- netif_receive_skb(skb);
+-
+- addr = dma_map_single(&ndev->dev, (void *)rx_buff->skb->data,
++ addr = dma_map_single(&ndev->dev, (void *)skb->data,
+ EMAC_BUFFER_SIZE, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&ndev->dev, addr)) {
+ if (net_ratelimit())
+- netdev_err(ndev, "cannot dma map\n");
+- dev_kfree_skb(rx_buff->skb);
++ netdev_err(ndev, "cannot map dma buffer\n");
++ dev_kfree_skb(skb);
++ /* Return ownership to EMAC */
++ rxbd->info = cpu_to_le32(FOR_EMAC | EMAC_BUFFER_SIZE);
+ stats->rx_errors++;
++ stats->rx_dropped++;
+ continue;
+ }
++
++ /* unmap previosly mapped skb */
++ dma_unmap_single(&ndev->dev, dma_unmap_addr(rx_buff, addr),
++ dma_unmap_len(rx_buff, len), DMA_FROM_DEVICE);
++
++ pktlen = info & LEN_MASK;
++ stats->rx_packets++;
++ stats->rx_bytes += pktlen;
++ skb_put(rx_buff->skb, pktlen);
++ rx_buff->skb->dev = ndev;
++ rx_buff->skb->protocol = eth_type_trans(rx_buff->skb, ndev);
++
++ netif_receive_skb(rx_buff->skb);
++
++ rx_buff->skb = skb;
+ dma_unmap_addr_set(rx_buff, addr, addr);
+ dma_unmap_len_set(rx_buff, len, EMAC_BUFFER_SIZE);
+
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+index 5d9843bc73a1..0eb43586c034 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+@@ -2996,7 +2996,7 @@ int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode, bool keep_link)
+
+ del_timer_sync(&bp->timer);
+
+- if (IS_PF(bp)) {
++ if (IS_PF(bp) && !BP_NOMCP(bp)) {
+ /* Set ALWAYS_ALIVE bit in shmem */
+ bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
+ bnx2x_drv_pulse(bp);
+@@ -3078,7 +3078,7 @@ int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode, bool keep_link)
+ bp->cnic_loaded = false;
+
+ /* Clear driver version indication in shmem */
+- if (IS_PF(bp))
++ if (IS_PF(bp) && !BP_NOMCP(bp))
+ bnx2x_update_mng_version(bp);
+
+ /* Check if there are pending parity attentions. If there are - set
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+index a1d149515531..a33580119b7c 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+@@ -9488,6 +9488,15 @@ static int bnx2x_init_shmem(struct bnx2x *bp)
+
+ do {
+ bp->common.shmem_base = REG_RD(bp, MISC_REG_SHARED_MEM_ADDR);
++
++ /* If we read all 0xFFs, means we are in PCI error state and
++ * should bail out to avoid crashes on adapter's FW reads.
++ */
++ if (bp->common.shmem_base == 0xFFFFFFFF) {
++ bp->flags |= NO_MCP_FLAG;
++ return -ENODEV;
++ }
++
+ if (bp->common.shmem_base) {
+ val = SHMEM_RD(bp, validity_map[BP_PORT(bp)]);
+ if (val & SHR_MEM_VALIDITY_MB)
+@@ -13791,7 +13800,10 @@ static pci_ers_result_t bnx2x_io_slot_reset(struct pci_dev *pdev)
+ BNX2X_ERR("IO slot reset --> driver unload\n");
+
+ /* MCP should have been reset; Need to wait for validity */
+- bnx2x_init_shmem(bp);
++ if (bnx2x_init_shmem(bp)) {
++ rtnl_unlock();
++ return PCI_ERS_RESULT_DISCONNECT;
++ }
+
+ if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
+ u32 v;
+diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
+index 7b150085e34d..3640d6abc1e6 100644
+--- a/drivers/net/ethernet/broadcom/tg3.c
++++ b/drivers/net/ethernet/broadcom/tg3.c
+@@ -10051,6 +10051,16 @@ static int tg3_reset_hw(struct tg3 *tp, bool reset_phy)
+
+ tw32(GRC_MODE, tp->grc_mode | val);
+
++ /* On one of the AMD platform, MRRS is restricted to 4000 because of
++ * south bridge limitation. As a workaround, Driver is setting MRRS
++ * to 2048 instead of default 4096.
++ */
++ if (tp->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL &&
++ tp->pdev->subsystem_device == TG3PCI_SUBDEVICE_ID_DELL_5762) {
++ val = tr32(TG3PCI_DEV_STATUS_CTRL) & ~MAX_READ_REQ_MASK;
++ tw32(TG3PCI_DEV_STATUS_CTRL, val | MAX_READ_REQ_SIZE_2048);
++ }
++
+ /* Setup the timer prescalar register. Clock is always 66Mhz. */
+ val = tr32(GRC_MISC_CFG);
+ val &= ~0xff;
+@@ -14230,7 +14240,8 @@ static int tg3_change_mtu(struct net_device *dev, int new_mtu)
+ */
+ if (tg3_asic_rev(tp) == ASIC_REV_57766 ||
+ tg3_asic_rev(tp) == ASIC_REV_5717 ||
+- tg3_asic_rev(tp) == ASIC_REV_5719)
++ tg3_asic_rev(tp) == ASIC_REV_5719 ||
++ tg3_asic_rev(tp) == ASIC_REV_5720)
+ reset_phy = true;
+
+ err = tg3_restart_hw(tp, reset_phy);
+diff --git a/drivers/net/ethernet/broadcom/tg3.h b/drivers/net/ethernet/broadcom/tg3.h
+index 31c9f8295953..19532961e173 100644
+--- a/drivers/net/ethernet/broadcom/tg3.h
++++ b/drivers/net/ethernet/broadcom/tg3.h
+@@ -95,6 +95,7 @@
+ #define TG3PCI_SUBDEVICE_ID_DELL_JAGUAR 0x0106
+ #define TG3PCI_SUBDEVICE_ID_DELL_MERLOT 0x0109
+ #define TG3PCI_SUBDEVICE_ID_DELL_SLIM_MERLOT 0x010a
++#define TG3PCI_SUBDEVICE_ID_DELL_5762 0x07f0
+ #define TG3PCI_SUBVENDOR_ID_COMPAQ PCI_VENDOR_ID_COMPAQ
+ #define TG3PCI_SUBDEVICE_ID_COMPAQ_BANSHEE 0x007c
+ #define TG3PCI_SUBDEVICE_ID_COMPAQ_BANSHEE_2 0x009a
+@@ -280,6 +281,9 @@
+ #define TG3PCI_STD_RING_PROD_IDX 0x00000098 /* 64-bit */
+ #define TG3PCI_RCV_RET_RING_CON_IDX 0x000000a0 /* 64-bit */
+ /* 0xa8 --> 0xb8 unused */
++#define TG3PCI_DEV_STATUS_CTRL 0x000000b4
++#define MAX_READ_REQ_SIZE_2048 0x00004000
++#define MAX_READ_REQ_MASK 0x00007000
+ #define TG3PCI_DUAL_MAC_CTRL 0x000000b8
+ #define DUAL_MAC_CTRL_CH_MASK 0x00000003
+ #define DUAL_MAC_CTRL_ID 0x00000004
+diff --git a/drivers/net/ethernet/freescale/gianfar_ptp.c b/drivers/net/ethernet/freescale/gianfar_ptp.c
+index 8e3cd77aa347..9e5d64f559a4 100644
+--- a/drivers/net/ethernet/freescale/gianfar_ptp.c
++++ b/drivers/net/ethernet/freescale/gianfar_ptp.c
+@@ -314,11 +314,10 @@ static int ptp_gianfar_adjtime(struct ptp_clock_info *ptp, s64 delta)
+ now = tmr_cnt_read(etsects);
+ now += delta;
+ tmr_cnt_write(etsects, now);
++ set_fipers(etsects);
+
+ spin_unlock_irqrestore(&etsects->lock, flags);
+
+- set_fipers(etsects);
+-
+ return 0;
+ }
+
+diff --git a/drivers/net/ethernet/intel/e1000/e1000.h b/drivers/net/ethernet/intel/e1000/e1000.h
+index 69707108d23c..4cd6dac110f0 100644
+--- a/drivers/net/ethernet/intel/e1000/e1000.h
++++ b/drivers/net/ethernet/intel/e1000/e1000.h
+@@ -328,7 +328,8 @@ struct e1000_adapter {
+ enum e1000_state_t {
+ __E1000_TESTING,
+ __E1000_RESETTING,
+- __E1000_DOWN
++ __E1000_DOWN,
++ __E1000_DISABLED
+ };
+
+ #undef pr_fmt
+diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
+index 983eb4e6f7aa..4d80c92fa96d 100644
+--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
++++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
+@@ -940,7 +940,7 @@ static int e1000_init_hw_struct(struct e1000_adapter *adapter,
+ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ {
+ struct net_device *netdev;
+- struct e1000_adapter *adapter;
++ struct e1000_adapter *adapter = NULL;
+ struct e1000_hw *hw;
+
+ static int cards_found = 0;
+@@ -950,6 +950,7 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ u16 tmp = 0;
+ u16 eeprom_apme_mask = E1000_EEPROM_APME;
+ int bars, need_ioport;
++ bool disable_dev = false;
+
+ /* do not allocate ioport bars when not needed */
+ need_ioport = e1000_is_need_ioport(pdev);
+@@ -1250,11 +1251,13 @@ err_mdio_ioremap:
+ iounmap(hw->ce4100_gbe_mdio_base_virt);
+ iounmap(hw->hw_addr);
+ err_ioremap:
++ disable_dev = !test_and_set_bit(__E1000_DISABLED, &adapter->flags);
+ free_netdev(netdev);
+ err_alloc_etherdev:
+ pci_release_selected_regions(pdev, bars);
+ err_pci_reg:
+- pci_disable_device(pdev);
++ if (!adapter || disable_dev)
++ pci_disable_device(pdev);
+ return err;
+ }
+
+@@ -1272,6 +1275,7 @@ static void e1000_remove(struct pci_dev *pdev)
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
++ bool disable_dev;
+
+ e1000_down_and_stop(adapter);
+ e1000_release_manageability(adapter);
+@@ -1290,9 +1294,11 @@ static void e1000_remove(struct pci_dev *pdev)
+ iounmap(hw->flash_address);
+ pci_release_selected_regions(pdev, adapter->bars);
+
++ disable_dev = !test_and_set_bit(__E1000_DISABLED, &adapter->flags);
+ free_netdev(netdev);
+
+- pci_disable_device(pdev);
++ if (disable_dev)
++ pci_disable_device(pdev);
+ }
+
+ /**
+@@ -5137,7 +5143,8 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)
+ if (netif_running(netdev))
+ e1000_free_irq(adapter);
+
+- pci_disable_device(pdev);
++ if (!test_and_set_bit(__E1000_DISABLED, &adapter->flags))
++ pci_disable_device(pdev);
+
+ return 0;
+ }
+@@ -5181,6 +5188,10 @@ static int e1000_resume(struct pci_dev *pdev)
+ pr_err("Cannot enable PCI device from suspend\n");
+ return err;
+ }
++
++ /* flush memory to make sure state is correct */
++ smp_mb__before_atomic();
++ clear_bit(__E1000_DISABLED, &adapter->flags);
+ pci_set_master(pdev);
+
+ pci_enable_wake(pdev, PCI_D3hot, 0);
+@@ -5255,7 +5266,9 @@ static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
+
+ if (netif_running(netdev))
+ e1000_down(adapter);
+- pci_disable_device(pdev);
++
++ if (!test_and_set_bit(__E1000_DISABLED, &adapter->flags))
++ pci_disable_device(pdev);
+
+ /* Request a slot slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
+@@ -5283,6 +5296,10 @@ static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
+ pr_err("Cannot re-enable PCI device after reset.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
++
++ /* flush memory to make sure state is correct */
++ smp_mb__before_atomic();
++ clear_bit(__E1000_DISABLED, &adapter->flags);
+ pci_set_master(pdev);
+
+ pci_enable_wake(pdev, PCI_D3hot, 0);
+diff --git a/drivers/net/phy/mdio-sun4i.c b/drivers/net/phy/mdio-sun4i.c
+index 15bc7f9ea224..afd76e07088b 100644
+--- a/drivers/net/phy/mdio-sun4i.c
++++ b/drivers/net/phy/mdio-sun4i.c
+@@ -128,8 +128,10 @@ static int sun4i_mdio_probe(struct platform_device *pdev)
+
+ data->regulator = devm_regulator_get(&pdev->dev, "phy");
+ if (IS_ERR(data->regulator)) {
+- if (PTR_ERR(data->regulator) == -EPROBE_DEFER)
+- return -EPROBE_DEFER;
++ if (PTR_ERR(data->regulator) == -EPROBE_DEFER) {
++ ret = -EPROBE_DEFER;
++ goto err_out_free_mdiobus;
++ }
+
+ dev_info(&pdev->dev, "no regulator found\n");
+ } else {
+diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
+index c30c1fc7889a..ebd3fcf6dc62 100644
+--- a/drivers/net/ppp/ppp_generic.c
++++ b/drivers/net/ppp/ppp_generic.c
+@@ -2912,6 +2912,15 @@ ppp_connect_channel(struct channel *pch, int unit)
+ goto outl;
+
+ ppp_lock(ppp);
++ spin_lock_bh(&pch->downl);
++ if (!pch->chan) {
++ /* Don't connect unregistered channels */
++ spin_unlock_bh(&pch->downl);
++ ppp_unlock(ppp);
++ ret = -ENOTCONN;
++ goto outl;
++ }
++ spin_unlock_bh(&pch->downl);
+ if (pch->file.hdrlen > ppp->file.hdrlen)
+ ppp->file.hdrlen = pch->file.hdrlen;
+ hdrlen = pch->file.hdrlen + 2; /* for protocol bytes */
+diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c
+index 0d7645581f91..4842344a96f1 100644
+--- a/drivers/net/wan/hdlc_ppp.c
++++ b/drivers/net/wan/hdlc_ppp.c
+@@ -574,7 +574,10 @@ static void ppp_timer(unsigned long arg)
+ ppp_cp_event(proto->dev, proto->pid, TO_GOOD, 0, 0,
+ 0, NULL);
+ proto->restart_counter--;
+- } else
++ } else if (netif_carrier_ok(proto->dev))
++ ppp_cp_event(proto->dev, proto->pid, TO_GOOD, 0, 0,
++ 0, NULL);
++ else
+ ppp_cp_event(proto->dev, proto->pid, TO_BAD, 0, 0,
+ 0, NULL);
+ break;
+diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
+index 9e8461466534..fd9f6ce14e8e 100644
+--- a/drivers/net/xen-netfront.c
++++ b/drivers/net/xen-netfront.c
+@@ -1284,6 +1284,7 @@ static struct net_device *xennet_create_dev(struct xenbus_device *dev)
+
+ netif_carrier_off(netdev);
+
++ xenbus_switch_state(dev, XenbusStateInitialising);
+ return netdev;
+
+ exit:
+diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
+index d26134713682..d05c553eb552 100644
+--- a/drivers/s390/block/dasd_3990_erp.c
++++ b/drivers/s390/block/dasd_3990_erp.c
+@@ -2743,6 +2743,16 @@ dasd_3990_erp_action(struct dasd_ccw_req * cqr)
+ erp = dasd_3990_erp_handle_match_erp(cqr, erp);
+ }
+
++
++ /*
++ * For path verification work we need to stick with the path that was
++ * originally chosen so that the per path configuration data is
++ * assigned correctly.
++ */
++ if (test_bit(DASD_CQR_VERIFY_PATH, &erp->flags) && cqr->lpm) {
++ erp->lpm = cqr->lpm;
++ }
++
+ if (device->features & DASD_FEATURE_ERPLOG) {
+ /* print current erp_chain */
+ dev_err(&device->cdev->dev,
+diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
+index 77336d85a717..02780b8c1c15 100644
+--- a/drivers/s390/net/qeth_core.h
++++ b/drivers/s390/net/qeth_core.h
+@@ -588,6 +588,11 @@ struct qeth_cmd_buffer {
+ void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
+ };
+
++static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
++{
++ return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
++}
++
+ /**
+ * definition of a qeth channel, used for read and write
+ */
+diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
+index a81215d87ce1..9e9964ca696b 100644
+--- a/drivers/s390/net/qeth_core_main.c
++++ b/drivers/s390/net/qeth_core_main.c
+@@ -2061,7 +2061,7 @@ int qeth_send_control_data(struct qeth_card *card, int len,
+ unsigned long flags;
+ struct qeth_reply *reply = NULL;
+ unsigned long timeout, event_timeout;
+- struct qeth_ipa_cmd *cmd;
++ struct qeth_ipa_cmd *cmd = NULL;
+
+ QETH_CARD_TEXT(card, 2, "sendctl");
+
+@@ -2075,23 +2075,27 @@ int qeth_send_control_data(struct qeth_card *card, int len,
+ }
+ reply->callback = reply_cb;
+ reply->param = reply_param;
+- if (card->state == CARD_STATE_DOWN)
+- reply->seqno = QETH_IDX_COMMAND_SEQNO;
+- else
+- reply->seqno = card->seqno.ipa++;
++
+ init_waitqueue_head(&reply->wait_q);
+- spin_lock_irqsave(&card->lock, flags);
+- list_add_tail(&reply->list, &card->cmd_waiter_list);
+- spin_unlock_irqrestore(&card->lock, flags);
+ QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
+
+ while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
+- qeth_prepare_control_data(card, len, iob);
+
+- if (IS_IPA(iob->data))
++ if (IS_IPA(iob->data)) {
++ cmd = __ipa_cmd(iob);
++ cmd->hdr.seqno = card->seqno.ipa++;
++ reply->seqno = cmd->hdr.seqno;
+ event_timeout = QETH_IPA_TIMEOUT;
+- else
++ } else {
++ reply->seqno = QETH_IDX_COMMAND_SEQNO;
+ event_timeout = QETH_TIMEOUT;
++ }
++ qeth_prepare_control_data(card, len, iob);
++
++ spin_lock_irqsave(&card->lock, flags);
++ list_add_tail(&reply->list, &card->cmd_waiter_list);
++ spin_unlock_irqrestore(&card->lock, flags);
++
+ timeout = jiffies + event_timeout;
+
+ QETH_CARD_TEXT(card, 6, "noirqpnd");
+@@ -2116,9 +2120,8 @@ int qeth_send_control_data(struct qeth_card *card, int len,
+
+ /* we have only one long running ipassist, since we can ensure
+ process context of this command we can sleep */
+- cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+- if ((cmd->hdr.command == IPA_CMD_SETIP) &&
+- (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
++ if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
++ cmd->hdr.prot_version == QETH_PROT_IPV4) {
+ if (!wait_event_timeout(reply->wait_q,
+ atomic_read(&reply->received), event_timeout))
+ goto time_err;
+@@ -2925,7 +2928,7 @@ static void qeth_fill_ipacmd_header(struct qeth_card *card,
+ memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
+ cmd->hdr.command = command;
+ cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
+- cmd->hdr.seqno = card->seqno.ipa;
++ /* cmd->hdr.seqno is set by qeth_send_control_data() */
+ cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
+ cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
+ if (card->options.layer2)
+diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
+index 60f9651f2643..ad7170bffc05 100644
+--- a/drivers/scsi/qla2xxx/qla_init.c
++++ b/drivers/scsi/qla2xxx/qla_init.c
+@@ -365,6 +365,7 @@ qla24xx_abort_sp_done(void *data, void *ptr, int res)
+ srb_t *sp = (srb_t *)ptr;
+ struct srb_iocb *abt = &sp->u.iocb_cmd;
+
++ del_timer(&sp->u.iocb_cmd.timer);
+ complete(&abt->u.abt.comp);
+ }
+
+diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
+index 4de1394ebf22..1be1c2dca118 100644
+--- a/drivers/scsi/qla2xxx/qla_target.c
++++ b/drivers/scsi/qla2xxx/qla_target.c
+@@ -5513,7 +5513,7 @@ static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
+ fc_port_t *fcport;
+ int rc;
+
+- fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
++ fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
+ if (!fcport) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
+ "qla_target(%d): Allocation of tmp FC port failed",
+diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
+index 98b56a7069d3..af4dc8501269 100644
+--- a/drivers/scsi/storvsc_drv.c
++++ b/drivers/scsi/storvsc_drv.c
+@@ -1067,10 +1067,11 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb,
+ case TEST_UNIT_READY:
+ break;
+ default:
+- set_host_byte(scmnd, DID_TARGET_FAILURE);
++ set_host_byte(scmnd, DID_ERROR);
+ }
+ break;
+ case SRB_STATUS_INVALID_LUN:
++ set_host_byte(scmnd, DID_NO_CONNECT);
+ do_work = true;
+ process_err_fn = storvsc_remove_lun;
+ break;
+diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
+index a2f40b1b2225..3fef713f693b 100644
+--- a/drivers/spi/spi-atmel.c
++++ b/drivers/spi/spi-atmel.c
+@@ -1423,12 +1423,12 @@ static int atmel_spi_remove(struct platform_device *pdev)
+ pm_runtime_get_sync(&pdev->dev);
+
+ /* reset the hardware and block queue progress */
+- spin_lock_irq(&as->lock);
+ if (as->use_dma) {
+ atmel_spi_stop_dma(as);
+ atmel_spi_release_dma(as);
+ }
+
++ spin_lock_irq(&as->lock);
+ spi_writel(as, CR, SPI_BIT(SWRST));
+ spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */
+ spi_readl(as, SR);
+diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c
+index c40bd7fbc210..68a5a950bf34 100644
+--- a/drivers/staging/android/ashmem.c
++++ b/drivers/staging/android/ashmem.c
+@@ -330,24 +330,23 @@ static loff_t ashmem_llseek(struct file *file, loff_t offset, int origin)
+ mutex_lock(&ashmem_mutex);
+
+ if (asma->size == 0) {
+- ret = -EINVAL;
+- goto out;
++ mutex_unlock(&ashmem_mutex);
++ return -EINVAL;
+ }
+
+ if (!asma->file) {
+- ret = -EBADF;
+- goto out;
++ mutex_unlock(&ashmem_mutex);
++ return -EBADF;
+ }
+
++ mutex_unlock(&ashmem_mutex);
++
+ ret = vfs_llseek(asma->file, offset, origin);
+ if (ret < 0)
+- goto out;
++ return ret;
+
+ /** Copy f_pos from backing file, since f_ops->llseek() sets it */
+ file->f_pos = asma->file->f_pos;
+-
+-out:
+- mutex_unlock(&ashmem_mutex);
+ return ret;
+ }
+
+diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
+index 0a1e9f4d9882..e2956ccdd82c 100644
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -5396,6 +5396,17 @@ static struct pci_device_id serial_pci_tbl[] = {
+ { PCI_VENDOR_ID_INTASHIELD, PCI_DEVICE_ID_INTASHIELD_IS400,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, /* 135a.0dc0 */
+ pbn_b2_4_115200 },
++ /*
++ * BrainBoxes UC-260
++ */
++ { PCI_VENDOR_ID_INTASHIELD, 0x0D21,
++ PCI_ANY_ID, PCI_ANY_ID,
++ PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00,
++ pbn_b2_4_115200 },
++ { PCI_VENDOR_ID_INTASHIELD, 0x0E34,
++ PCI_ANY_ID, PCI_ANY_ID,
++ PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00,
++ pbn_b2_4_115200 },
+ /*
+ * Perle PCI-RAS cards
+ */
+diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
+index 1f45a0302b7c..839ba41b6232 100644
+--- a/drivers/tty/serial/atmel_serial.c
++++ b/drivers/tty/serial/atmel_serial.c
+@@ -1687,6 +1687,7 @@ static void atmel_get_ip_name(struct uart_port *port)
+ switch (version) {
+ case 0x302:
+ case 0x10213:
++ case 0x10302:
+ dev_dbg(port->dev, "This version is usart\n");
+ atmel_port->is_usart = true;
+ break;
+diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
+index 19316609d4f9..c8c564c71c75 100644
+--- a/drivers/tty/serial/sh-sci.c
++++ b/drivers/tty/serial/sh-sci.c
+@@ -736,6 +736,8 @@ static void sci_receive_chars(struct uart_port *port)
+ /* Tell the rest of the system the news. New characters! */
+ tty_flip_buffer_push(tport);
+ } else {
++ /* TTY buffers full; read from RX reg to prevent lockup */
++ serial_port_in(port, SCxRDR);
+ serial_port_in(port, SCxSR); /* dummy read */
+ serial_port_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
+ }
+diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
+index f368d2053da5..251b44300b38 100644
+--- a/drivers/usb/core/message.c
++++ b/drivers/usb/core/message.c
+@@ -147,6 +147,10 @@ int usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
+
+ ret = usb_internal_control_msg(dev, pipe, dr, data, size, timeout);
+
++ /* Linger a bit, prior to the next control message. */
++ if (dev->quirks & USB_QUIRK_DELAY_CTRL_MSG)
++ msleep(200);
++
+ kfree(dr);
+
+ return ret;
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 774c97bb1c08..4f1c6f8d4352 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -229,7 +229,8 @@ static const struct usb_device_id usb_quirk_list[] = {
+ { USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT },
+
+ /* Corsair Strafe RGB */
+- { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT },
++ { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT |
++ USB_QUIRK_DELAY_CTRL_MSG },
+
+ /* Corsair K70 LUX */
+ { USB_DEVICE(0x1b1c, 0x1b36), .driver_info = USB_QUIRK_DELAY_INIT },
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 6b62bb5c021c..3f4c6d97a4ff 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -1333,7 +1333,6 @@ ffs_fs_kill_sb(struct super_block *sb)
+ if (sb->s_fs_info) {
+ ffs_release_dev(sb->s_fs_info);
+ ffs_data_closed(sb->s_fs_info);
+- ffs_data_put(sb->s_fs_info);
+ }
+ }
+
+diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c
+index ad408251d955..108dcc5f5350 100644
+--- a/drivers/usb/mon/mon_text.c
++++ b/drivers/usb/mon/mon_text.c
+@@ -82,6 +82,8 @@ struct mon_reader_text {
+
+ wait_queue_head_t wait;
+ int printf_size;
++ size_t printf_offset;
++ size_t printf_togo;
+ char *printf_buf;
+ struct mutex printf_lock;
+
+@@ -373,73 +375,103 @@ err_alloc:
+ return rc;
+ }
+
+-/*
+- * For simplicity, we read one record in one system call and throw out
+- * what does not fit. This means that the following does not work:
+- * dd if=/dbg/usbmon/0t bs=10
+- * Also, we do not allow seeks and do not bother advancing the offset.
+- */
++static ssize_t mon_text_copy_to_user(struct mon_reader_text *rp,
++ char __user * const buf, const size_t nbytes)
++{
++ const size_t togo = min(nbytes, rp->printf_togo);
++
++ if (copy_to_user(buf, &rp->printf_buf[rp->printf_offset], togo))
++ return -EFAULT;
++ rp->printf_togo -= togo;
++ rp->printf_offset += togo;
++ return togo;
++}
++
++/* ppos is not advanced since the llseek operation is not permitted. */
+ static ssize_t mon_text_read_t(struct file *file, char __user *buf,
+- size_t nbytes, loff_t *ppos)
++ size_t nbytes, loff_t *ppos)
+ {
+ struct mon_reader_text *rp = file->private_data;
+ struct mon_event_text *ep;
+ struct mon_text_ptr ptr;
++ ssize_t ret;
+
+- if (IS_ERR(ep = mon_text_read_wait(rp, file)))
+- return PTR_ERR(ep);
+ mutex_lock(&rp->printf_lock);
+- ptr.cnt = 0;
+- ptr.pbuf = rp->printf_buf;
+- ptr.limit = rp->printf_size;
+-
+- mon_text_read_head_t(rp, &ptr, ep);
+- mon_text_read_statset(rp, &ptr, ep);
+- ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
+- " %d", ep->length);
+- mon_text_read_data(rp, &ptr, ep);
+-
+- if (copy_to_user(buf, rp->printf_buf, ptr.cnt))
+- ptr.cnt = -EFAULT;
++
++ if (rp->printf_togo == 0) {
++
++ ep = mon_text_read_wait(rp, file);
++ if (IS_ERR(ep)) {
++ mutex_unlock(&rp->printf_lock);
++ return PTR_ERR(ep);
++ }
++ ptr.cnt = 0;
++ ptr.pbuf = rp->printf_buf;
++ ptr.limit = rp->printf_size;
++
++ mon_text_read_head_t(rp, &ptr, ep);
++ mon_text_read_statset(rp, &ptr, ep);
++ ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
++ " %d", ep->length);
++ mon_text_read_data(rp, &ptr, ep);
++
++ rp->printf_togo = ptr.cnt;
++ rp->printf_offset = 0;
++
++ kmem_cache_free(rp->e_slab, ep);
++ }
++
++ ret = mon_text_copy_to_user(rp, buf, nbytes);
+ mutex_unlock(&rp->printf_lock);
+- kmem_cache_free(rp->e_slab, ep);
+- return ptr.cnt;
++ return ret;
+ }
+
++/* ppos is not advanced since the llseek operation is not permitted. */
+ static ssize_t mon_text_read_u(struct file *file, char __user *buf,
+- size_t nbytes, loff_t *ppos)
++ size_t nbytes, loff_t *ppos)
+ {
+ struct mon_reader_text *rp = file->private_data;
+ struct mon_event_text *ep;
+ struct mon_text_ptr ptr;
++ ssize_t ret;
+
+- if (IS_ERR(ep = mon_text_read_wait(rp, file)))
+- return PTR_ERR(ep);
+ mutex_lock(&rp->printf_lock);
+- ptr.cnt = 0;
+- ptr.pbuf = rp->printf_buf;
+- ptr.limit = rp->printf_size;
+
+- mon_text_read_head_u(rp, &ptr, ep);
+- if (ep->type == 'E') {
+- mon_text_read_statset(rp, &ptr, ep);
+- } else if (ep->xfertype == USB_ENDPOINT_XFER_ISOC) {
+- mon_text_read_isostat(rp, &ptr, ep);
+- mon_text_read_isodesc(rp, &ptr, ep);
+- } else if (ep->xfertype == USB_ENDPOINT_XFER_INT) {
+- mon_text_read_intstat(rp, &ptr, ep);
+- } else {
+- mon_text_read_statset(rp, &ptr, ep);
++ if (rp->printf_togo == 0) {
++
++ ep = mon_text_read_wait(rp, file);
++ if (IS_ERR(ep)) {
++ mutex_unlock(&rp->printf_lock);
++ return PTR_ERR(ep);
++ }
++ ptr.cnt = 0;
++ ptr.pbuf = rp->printf_buf;
++ ptr.limit = rp->printf_size;
++
++ mon_text_read_head_u(rp, &ptr, ep);
++ if (ep->type == 'E') {
++ mon_text_read_statset(rp, &ptr, ep);
++ } else if (ep->xfertype == USB_ENDPOINT_XFER_ISOC) {
++ mon_text_read_isostat(rp, &ptr, ep);
++ mon_text_read_isodesc(rp, &ptr, ep);
++ } else if (ep->xfertype == USB_ENDPOINT_XFER_INT) {
++ mon_text_read_intstat(rp, &ptr, ep);
++ } else {
++ mon_text_read_statset(rp, &ptr, ep);
++ }
++ ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
++ " %d", ep->length);
++ mon_text_read_data(rp, &ptr, ep);
++
++ rp->printf_togo = ptr.cnt;
++ rp->printf_offset = 0;
++
++ kmem_cache_free(rp->e_slab, ep);
+ }
+- ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
+- " %d", ep->length);
+- mon_text_read_data(rp, &ptr, ep);
+
+- if (copy_to_user(buf, rp->printf_buf, ptr.cnt))
+- ptr.cnt = -EFAULT;
++ ret = mon_text_copy_to_user(rp, buf, nbytes);
+ mutex_unlock(&rp->printf_lock);
+- kmem_cache_free(rp->e_slab, ep);
+- return ptr.cnt;
++ return ret;
+ }
+
+ static struct mon_event_text *mon_text_read_wait(struct mon_reader_text *rp,
+diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
+index 021d6880a3ed..b3c7670f0652 100644
+--- a/drivers/usb/storage/uas.c
++++ b/drivers/usb/storage/uas.c
+@@ -1052,7 +1052,7 @@ static int uas_post_reset(struct usb_interface *intf)
+ return 0;
+
+ err = uas_configure_endpoints(devinfo);
+- if (err && err != ENODEV)
++ if (err && err != -ENODEV)
+ shost_printk(KERN_ERR, shost,
+ "%s: alloc streams error %d after reset",
+ __func__, err);
+diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
+index cd2e880979f2..b9e9eaa8c45c 100644
+--- a/drivers/usb/storage/unusual_devs.h
++++ b/drivers/usb/storage/unusual_devs.h
+@@ -2131,6 +2131,13 @@ UNUSUAL_DEV( 0x22b8, 0x3010, 0x0001, 0x0001,
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_FIX_CAPACITY | US_FL_IGNORE_RESIDUE ),
+
++/* Reported by Teijo Kinnunen <teijo.kinnunen@code-q.fi> */
++UNUSUAL_DEV( 0x152d, 0x2567, 0x0117, 0x0117,
++ "JMicron",
++ "USB to ATA/ATAPI Bridge",
++ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
++ US_FL_BROKEN_FUA ),
++
+ /* Reported-by George Cherian <george.cherian@cavium.com> */
+ UNUSUAL_DEV(0x152d, 0x9561, 0x0000, 0x9999,
+ "JMicron",
+diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
+index ada3e44f9932..792d5fbad4e5 100644
+--- a/drivers/watchdog/hpwdt.c
++++ b/drivers/watchdog/hpwdt.c
+@@ -51,6 +51,7 @@ static char expect_release;
+ static unsigned long hpwdt_is_open;
+
+ static void __iomem *pci_mem_addr; /* the PCI-memory address */
++static unsigned long __iomem *hpwdt_nmistat;
+ static unsigned long __iomem *hpwdt_timer_reg;
+ static unsigned long __iomem *hpwdt_timer_con;
+
+@@ -474,6 +475,11 @@ static int hpwdt_time_left(void)
+ }
+
+ #ifdef CONFIG_HPWDT_NMI_DECODING
++static int hpwdt_my_nmi(void)
++{
++ return ioread8(hpwdt_nmistat) & 0x6;
++}
++
+ /*
+ * NMI Handler
+ */
+@@ -485,6 +491,9 @@ static int hpwdt_pretimeout(unsigned int ulReason, struct pt_regs *regs)
+ if (!hpwdt_nmi_decoding)
+ goto out;
+
++ if ((ulReason == NMI_UNKNOWN) && !hpwdt_my_nmi())
++ return NMI_DONE;
++
+ spin_lock_irqsave(&rom_lock, rom_pl);
+ if (!die_nmi_called && !is_icru && !is_uefi)
+ asminline_call(&cmn_regs, cru_rom_addr);
+@@ -686,7 +695,7 @@ static void dmi_find_icru(const struct dmi_header *dm, void *dummy)
+ smbios_proliant_ptr = (struct smbios_proliant_info *) dm;
+ if (smbios_proliant_ptr->misc_features & 0x01)
+ is_icru = 1;
+- if (smbios_proliant_ptr->misc_features & 0x408)
++ if (smbios_proliant_ptr->misc_features & 0x1400)
+ is_uefi = 1;
+ }
+ }
+@@ -826,6 +835,7 @@ static int hpwdt_init_one(struct pci_dev *dev,
+ retval = -ENOMEM;
+ goto error_pci_iomap;
+ }
++ hpwdt_nmistat = pci_mem_addr + 0x6e;
+ hpwdt_timer_reg = pci_mem_addr + 0x70;
+ hpwdt_timer_con = pci_mem_addr + 0x72;
+
+diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
+index cea37ee4c615..078982f509e3 100644
+--- a/drivers/xen/gntdev.c
++++ b/drivers/xen/gntdev.c
+@@ -378,10 +378,8 @@ static int unmap_grant_pages(struct grant_map *map, int offset, int pages)
+ }
+ range = 0;
+ while (range < pages) {
+- if (map->unmap_ops[offset+range].handle == -1) {
+- range--;
++ if (map->unmap_ops[offset+range].handle == -1)
+ break;
+- }
+ range++;
+ }
+ err = __unmap_grant_pages(map, offset, range);
+@@ -876,8 +874,10 @@ unlock_out:
+ out_unlock_put:
+ mutex_unlock(&priv->lock);
+ out_put_map:
+- if (use_ptemod)
++ if (use_ptemod) {
+ map->vma = NULL;
++ unmap_grant_pages(map, 0, map->count);
++ }
+ gntdev_put_map(priv, map);
+ return err;
+ }
+diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
+index fb3e64d37cb4..6b16b8653d98 100644
+--- a/fs/btrfs/acl.c
++++ b/fs/btrfs/acl.c
+@@ -82,12 +82,6 @@ static int __btrfs_set_acl(struct btrfs_trans_handle *trans,
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ name = POSIX_ACL_XATTR_ACCESS;
+- if (acl) {
+- ret = posix_acl_update_mode(inode, &inode->i_mode, &acl);
+- if (ret)
+- return ret;
+- }
+- ret = 0;
+ break;
+ case ACL_TYPE_DEFAULT:
+ if (!S_ISDIR(inode->i_mode))
+@@ -123,7 +117,18 @@ out:
+
+ int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ {
+- return __btrfs_set_acl(NULL, inode, acl, type);
++ int ret;
++ umode_t old_mode = inode->i_mode;
++
++ if (type == ACL_TYPE_ACCESS && acl) {
++ ret = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (ret)
++ return ret;
++ }
++ ret = __btrfs_set_acl(NULL, inode, acl, type);
++ if (ret)
++ inode->i_mode = old_mode;
++ return ret;
+ }
+
+ /*
+diff --git a/fs/super.c b/fs/super.c
+index 928c20f47af9..3fa6b945a34e 100644
+--- a/fs/super.c
++++ b/fs/super.c
+@@ -481,7 +481,11 @@ retry:
+ hlist_add_head(&s->s_instances, &type->fs_supers);
+ spin_unlock(&sb_lock);
+ get_filesystem(type);
+- register_shrinker(&s->s_shrink);
++ err = register_shrinker(&s->s_shrink);
++ if (err) {
++ deactivate_locked_super(s);
++ s = ERR_PTR(err);
++ }
+ return s;
+ }
+
+diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
+index 7d81032a645f..7806b3e0bf18 100644
+--- a/fs/xfs/xfs_qm.c
++++ b/fs/xfs/xfs_qm.c
+@@ -47,7 +47,7 @@
+ STATIC int xfs_qm_init_quotainos(xfs_mount_t *);
+ STATIC int xfs_qm_init_quotainfo(xfs_mount_t *);
+
+-
++STATIC void xfs_qm_destroy_quotainos(xfs_quotainfo_t *qi);
+ STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp);
+ /*
+ * We use the batch lookup interface to iterate over the dquots as it
+@@ -660,9 +660,17 @@ xfs_qm_init_quotainfo(
+ qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan;
+ qinf->qi_shrinker.seeks = DEFAULT_SEEKS;
+ qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE;
+- register_shrinker(&qinf->qi_shrinker);
++
++ error = register_shrinker(&qinf->qi_shrinker);
++ if (error)
++ goto out_free_inos;
++
+ return 0;
+
++out_free_inos:
++ mutex_destroy(&qinf->qi_quotaofflock);
++ mutex_destroy(&qinf->qi_tree_lock);
++ xfs_qm_destroy_quotainos(qinf);
+ out_free_lru:
+ list_lru_destroy(&qinf->qi_lru);
+ out_free_qinf:
+@@ -671,7 +679,6 @@ out_free_qinf:
+ return error;
+ }
+
+-
+ /*
+ * Gets called when unmounting a filesystem or when all quotas get
+ * turned off.
+@@ -688,19 +695,8 @@ xfs_qm_destroy_quotainfo(
+
+ unregister_shrinker(&qi->qi_shrinker);
+ list_lru_destroy(&qi->qi_lru);
+-
+- if (qi->qi_uquotaip) {
+- IRELE(qi->qi_uquotaip);
+- qi->qi_uquotaip = NULL; /* paranoia */
+- }
+- if (qi->qi_gquotaip) {
+- IRELE(qi->qi_gquotaip);
+- qi->qi_gquotaip = NULL;
+- }
+- if (qi->qi_pquotaip) {
+- IRELE(qi->qi_pquotaip);
+- qi->qi_pquotaip = NULL;
+- }
++ xfs_qm_destroy_quotainos(qi);
++ mutex_destroy(&qi->qi_tree_lock);
+ mutex_destroy(&qi->qi_quotaofflock);
+ kmem_free(qi);
+ mp->m_quotainfo = NULL;
+@@ -1562,6 +1558,24 @@ error_rele:
+ return error;
+ }
+
++STATIC void
++xfs_qm_destroy_quotainos(
++ xfs_quotainfo_t *qi)
++{
++ if (qi->qi_uquotaip) {
++ IRELE(qi->qi_uquotaip);
++ qi->qi_uquotaip = NULL; /* paranoia */
++ }
++ if (qi->qi_gquotaip) {
++ IRELE(qi->qi_gquotaip);
++ qi->qi_gquotaip = NULL;
++ }
++ if (qi->qi_pquotaip) {
++ IRELE(qi->qi_pquotaip);
++ qi->qi_pquotaip = NULL;
++ }
++}
++
+ STATIC void
+ xfs_qm_dqfree_one(
+ struct xfs_dquot *dqp)
+diff --git a/include/linux/nospec.h b/include/linux/nospec.h
+index b99bced39ac2..115381228203 100644
+--- a/include/linux/nospec.h
++++ b/include/linux/nospec.h
+@@ -5,6 +5,7 @@
+
+ #ifndef _LINUX_NOSPEC_H
+ #define _LINUX_NOSPEC_H
++#include <asm/barrier.h>
+
+ /**
+ * array_index_mask_nospec() - generate a ~0 mask when index < size, 0 otherwise
+@@ -66,7 +67,6 @@ static inline unsigned long array_index_mask_nospec(unsigned long index,
+ BUILD_BUG_ON(sizeof(_i) > sizeof(long)); \
+ BUILD_BUG_ON(sizeof(_s) > sizeof(long)); \
+ \
+- _i &= _mask; \
+- _i; \
++ (typeof(_i)) (_i & _mask); \
+ })
+ #endif /* _LINUX_NOSPEC_H */
+diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h
+index de2a722fe3cf..ea4f81c2a6d5 100644
+--- a/include/linux/usb/quirks.h
++++ b/include/linux/usb/quirks.h
+@@ -56,4 +56,7 @@
+ */
+ #define USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL BIT(11)
+
++/* Device needs a pause after every control message. */
++#define USB_QUIRK_DELAY_CTRL_MSG BIT(13)
++
+ #endif /* __LINUX_USB_QUIRKS_H */
+diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
+index deee212af8e0..e450bdbc4d84 100644
+--- a/include/linux/workqueue.h
++++ b/include/linux/workqueue.h
+@@ -449,6 +449,7 @@ extern bool cancel_delayed_work_sync(struct delayed_work *dwork);
+
+ extern void workqueue_set_max_active(struct workqueue_struct *wq,
+ int max_active);
++extern struct work_struct *current_work(void);
+ extern bool current_is_workqueue_rescuer(void);
+ extern bool workqueue_congested(int cpu, struct workqueue_struct *wq);
+ extern unsigned int work_busy(struct work_struct *work);
+diff --git a/include/net/udplite.h b/include/net/udplite.h
+index 80761938b9a7..8228155b305e 100644
+--- a/include/net/udplite.h
++++ b/include/net/udplite.h
+@@ -62,6 +62,7 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh)
+ UDP_SKB_CB(skb)->cscov = cscov;
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
++ skb->csum_valid = 0;
+ }
+
+ return 0;
+diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
+index e82a5f40a0ac..20df094556ae 100644
+--- a/kernel/time/hrtimer.c
++++ b/kernel/time/hrtimer.c
+@@ -1148,7 +1148,12 @@ static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id,
+
+ cpu_base = raw_cpu_ptr(&hrtimer_bases);
+
+- if (clock_id == CLOCK_REALTIME && mode != HRTIMER_MODE_ABS)
++ /*
++ * POSIX magic: Relative CLOCK_REALTIME timers are not affected by
++ * clock modifications, so they needs to become CLOCK_MONOTONIC to
++ * ensure POSIX compliance.
++ */
++ if (clock_id == CLOCK_REALTIME && mode & HRTIMER_MODE_REL)
+ clock_id = CLOCK_MONOTONIC;
+
+ base = hrtimer_clockid_to_base(clock_id);
+diff --git a/kernel/workqueue.c b/kernel/workqueue.c
+index 376db986db9b..782ba721984b 100644
+--- a/kernel/workqueue.c
++++ b/kernel/workqueue.c
+@@ -4062,6 +4062,22 @@ void workqueue_set_max_active(struct workqueue_struct *wq, int max_active)
+ }
+ EXPORT_SYMBOL_GPL(workqueue_set_max_active);
+
++/**
++ * current_work - retrieve %current task's work struct
++ *
++ * Determine if %current task is a workqueue worker and what it's working on.
++ * Useful to find out the context that the %current task is running in.
++ *
++ * Return: work struct if %current task is a workqueue worker, %NULL otherwise.
++ */
++struct work_struct *current_work(void)
++{
++ struct worker *worker = current_wq_worker();
++
++ return worker ? worker->current_work : NULL;
++}
++EXPORT_SYMBOL(current_work);
++
+ /**
+ * current_is_workqueue_rescuer - is %current workqueue rescuer?
+ *
+diff --git a/lib/mpi/longlong.h b/lib/mpi/longlong.h
+index a89d041592c8..e2851aafd1d3 100644
+--- a/lib/mpi/longlong.h
++++ b/lib/mpi/longlong.h
+@@ -671,7 +671,23 @@ do { \
+ ************** MIPS/64 **************
+ ***************************************/
+ #if (defined(__mips) && __mips >= 3) && W_TYPE_SIZE == 64
+-#if (__GNUC__ >= 5) || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
++#if defined(__mips_isa_rev) && __mips_isa_rev >= 6
++/*
++ * GCC ends up emitting a __multi3 intrinsic call for MIPS64r6 with the plain C
++ * code below, so we special case MIPS64r6 until the compiler can do better.
++ */
++#define umul_ppmm(w1, w0, u, v) \
++do { \
++ __asm__ ("dmulu %0,%1,%2" \
++ : "=d" ((UDItype)(w0)) \
++ : "d" ((UDItype)(u)), \
++ "d" ((UDItype)(v))); \
++ __asm__ ("dmuhu %0,%1,%2" \
++ : "=d" ((UDItype)(w1)) \
++ : "d" ((UDItype)(u)), \
++ "d" ((UDItype)(v))); \
++} while (0)
++#elif (__GNUC__ >= 5) || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
+ #define umul_ppmm(w1, w0, u, v) \
+ do { \
+ typedef unsigned int __ll_UTItype __attribute__((mode(TI))); \
+diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
+index 4905845a94e9..b5c4941fc068 100644
+--- a/net/bridge/br_sysfs_if.c
++++ b/net/bridge/br_sysfs_if.c
+@@ -229,6 +229,9 @@ static ssize_t brport_show(struct kobject *kobj,
+ struct brport_attribute *brport_attr = to_brport_attr(attr);
+ struct net_bridge_port *p = to_brport(kobj);
+
++ if (!brport_attr->show)
++ return -EINVAL;
++
+ return brport_attr->show(p, buf);
+ }
+
+diff --git a/net/bridge/netfilter/ebt_among.c b/net/bridge/netfilter/ebt_among.c
+index 9024283d2bca..9637a681bdda 100644
+--- a/net/bridge/netfilter/ebt_among.c
++++ b/net/bridge/netfilter/ebt_among.c
+@@ -172,18 +172,35 @@ ebt_among_mt(const struct sk_buff *skb, struct xt_action_param *par)
+ return true;
+ }
+
++static bool poolsize_invalid(const struct ebt_mac_wormhash *w)
++{
++ return w && w->poolsize >= (INT_MAX / sizeof(struct ebt_mac_wormhash_tuple));
++}
++
+ static int ebt_among_mt_check(const struct xt_mtchk_param *par)
+ {
+ const struct ebt_among_info *info = par->matchinfo;
+ const struct ebt_entry_match *em =
+ container_of(par->matchinfo, const struct ebt_entry_match, data);
+- int expected_length = sizeof(struct ebt_among_info);
++ unsigned int expected_length = sizeof(struct ebt_among_info);
+ const struct ebt_mac_wormhash *wh_dst, *wh_src;
+ int err;
+
++ if (expected_length > em->match_size)
++ return -EINVAL;
++
+ wh_dst = ebt_among_wh_dst(info);
+- wh_src = ebt_among_wh_src(info);
++ if (poolsize_invalid(wh_dst))
++ return -EINVAL;
++
+ expected_length += ebt_mac_wormhash_size(wh_dst);
++ if (expected_length > em->match_size)
++ return -EINVAL;
++
++ wh_src = ebt_among_wh_src(info);
++ if (poolsize_invalid(wh_src))
++ return -EINVAL;
++
+ expected_length += ebt_mac_wormhash_size(wh_src);
+
+ if (em->match_size != EBT_ALIGN(expected_length)) {
+diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
+index 91180a7fc943..3069eafeb33d 100644
+--- a/net/bridge/netfilter/ebtables.c
++++ b/net/bridge/netfilter/ebtables.c
+@@ -2019,7 +2019,9 @@ static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32,
+ if (match_kern)
+ match_kern->match_size = ret;
+
+- WARN_ON(type == EBT_COMPAT_TARGET && size_left);
++ if (WARN_ON(type == EBT_COMPAT_TARGET && size_left))
++ return -EINVAL;
++
+ match32 = (struct compat_ebt_entry_mwt *) buf;
+ }
+
+@@ -2076,6 +2078,15 @@ static int size_entry_mwt(struct ebt_entry *entry, const unsigned char *base,
+ *
+ * offsets are relative to beginning of struct ebt_entry (i.e., 0).
+ */
++ for (i = 0; i < 4 ; ++i) {
++ if (offsets[i] >= *total)
++ return -EINVAL;
++ if (i == 0)
++ continue;
++ if (offsets[i-1] > offsets[i])
++ return -EINVAL;
++ }
++
+ for (i = 0, j = 1 ; j < 4 ; j++, i++) {
+ struct compat_ebt_entry_mwt *match32;
+ unsigned int size;
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 0ccae464b46e..c2d927f91a30 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -2129,8 +2129,11 @@ EXPORT_SYMBOL(netif_set_xps_queue);
+ */
+ int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq)
+ {
++ bool disabling;
+ int rc;
+
++ disabling = txq < dev->real_num_tx_queues;
++
+ if (txq < 1 || txq > dev->num_tx_queues)
+ return -EINVAL;
+
+@@ -2146,15 +2149,19 @@ int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq)
+ if (dev->num_tc)
+ netif_setup_tc(dev, txq);
+
+- if (txq < dev->real_num_tx_queues) {
++ dev->real_num_tx_queues = txq;
++
++ if (disabling) {
++ synchronize_net();
+ qdisc_reset_all_tx_gt(dev, txq);
+ #ifdef CONFIG_XPS
+ netif_reset_xps_queues_gt(dev, txq);
+ #endif
+ }
++ } else {
++ dev->real_num_tx_queues = txq;
+ }
+
+- dev->real_num_tx_queues = txq;
+ return 0;
+ }
+ EXPORT_SYMBOL(netif_set_real_num_tx_queues);
+diff --git a/net/ipv4/route.c b/net/ipv4/route.c
+index 6a9a495aff23..7a6400345cb9 100644
+--- a/net/ipv4/route.c
++++ b/net/ipv4/route.c
+@@ -122,10 +122,13 @@ static int ip_rt_redirect_silence __read_mostly = ((HZ / 50) << (9 + 1));
+ static int ip_rt_error_cost __read_mostly = HZ;
+ static int ip_rt_error_burst __read_mostly = 5 * HZ;
+ static int ip_rt_mtu_expires __read_mostly = 10 * 60 * HZ;
+-static int ip_rt_min_pmtu __read_mostly = 512 + 20 + 20;
++static u32 ip_rt_min_pmtu __read_mostly = 512 + 20 + 20;
+ static int ip_rt_min_advmss __read_mostly = 256;
+
+ static int ip_rt_gc_timeout __read_mostly = RT_GC_TIMEOUT;
++
++static int ip_min_valid_pmtu __read_mostly = IPV4_MIN_MTU;
++
+ /*
+ * Interface to generic destination cache.
+ */
+@@ -2689,7 +2692,8 @@ static struct ctl_table ipv4_route_table[] = {
+ .data = &ip_rt_min_pmtu,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+- .proc_handler = proc_dointvec,
++ .proc_handler = proc_dointvec_minmax,
++ .extra1 = &ip_min_valid_pmtu,
+ },
+ {
+ .procname = "min_adv_mss",
+diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
+index 456718921552..75758e3d6c81 100644
+--- a/net/ipv4/udp.c
++++ b/net/ipv4/udp.c
+@@ -1733,6 +1733,11 @@ static inline int udp4_csum_init(struct sk_buff *skb, struct udphdr *uh,
+ err = udplite_checksum_init(skb, uh);
+ if (err)
+ return err;
++
++ if (UDP_SKB_CB(skb)->partial_cov) {
++ skb->csum = inet_compute_pseudo(skb, proto);
++ return 0;
++ }
+ }
+
+ return skb_checksum_init_zero_check(skb, proto, uh->check,
+diff --git a/net/ipv6/ip6_checksum.c b/net/ipv6/ip6_checksum.c
+index 9a4d7322fb22..391a8fedb27e 100644
+--- a/net/ipv6/ip6_checksum.c
++++ b/net/ipv6/ip6_checksum.c
+@@ -73,6 +73,11 @@ int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto)
+ err = udplite_checksum_init(skb, uh);
+ if (err)
+ return err;
++
++ if (UDP_SKB_CB(skb)->partial_cov) {
++ skb->csum = ip6_compute_pseudo(skb, proto);
++ return 0;
++ }
+ }
+
+ /* To support RFC 6936 (allow zero checksum in UDP/IPV6 for tunnels)
+diff --git a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
+index e76900e0aa92..25df2ce92ad8 100644
+--- a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
++++ b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
+@@ -99,6 +99,10 @@ static bool nf_nat_ipv6_manip_pkt(struct sk_buff *skb,
+ !l4proto->manip_pkt(skb, &nf_nat_l3proto_ipv6, iphdroff, hdroff,
+ target, maniptype))
+ return false;
++
++ /* must reload, offset might have changed */
++ ipv6h = (void *)skb->data + iphdroff;
++
+ manip_addr:
+ if (maniptype == NF_NAT_MANIP_SRC)
+ ipv6h->saddr = target->src.u3.in6;
+diff --git a/net/ipv6/route.c b/net/ipv6/route.c
+index 135fe458bfac..d17efa1b8473 100644
+--- a/net/ipv6/route.c
++++ b/net/ipv6/route.c
+@@ -1379,6 +1379,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
+ }
+
+ rt->dst.flags |= DST_HOST;
++ rt->dst.input = ip6_input;
+ rt->dst.output = ip6_output;
+ atomic_set(&rt->dst.__refcnt, 1);
+ rt->rt6i_gateway = fl6->daddr;
+diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
+index 295502b261a8..f4034c4eadf7 100644
+--- a/net/ipv6/sit.c
++++ b/net/ipv6/sit.c
+@@ -176,7 +176,7 @@ static void ipip6_tunnel_clone_6rd(struct net_device *dev, struct sit_net *sitn)
+ #ifdef CONFIG_IPV6_SIT_6RD
+ struct ip_tunnel *t = netdev_priv(dev);
+
+- if (t->dev == sitn->fb_tunnel_dev) {
++ if (dev == sitn->fb_tunnel_dev) {
+ ipv6_addr_set(&t->ip6rd.prefix, htonl(0x20020000), 0, 0, 0);
+ t->ip6rd.relay_prefix = 0;
+ t->ip6rd.prefixlen = 16;
+diff --git a/net/netfilter/nf_nat_proto_common.c b/net/netfilter/nf_nat_proto_common.c
+index fbce552a796e..7d7466dbf663 100644
+--- a/net/netfilter/nf_nat_proto_common.c
++++ b/net/netfilter/nf_nat_proto_common.c
+@@ -41,7 +41,7 @@ void nf_nat_l4proto_unique_tuple(const struct nf_nat_l3proto *l3proto,
+ const struct nf_conn *ct,
+ u16 *rover)
+ {
+- unsigned int range_size, min, i;
++ unsigned int range_size, min, max, i;
+ __be16 *portptr;
+ u_int16_t off;
+
+@@ -71,7 +71,10 @@ void nf_nat_l4proto_unique_tuple(const struct nf_nat_l3proto *l3proto,
+ }
+ } else {
+ min = ntohs(range->min_proto.all);
+- range_size = ntohs(range->max_proto.all) - min + 1;
++ max = ntohs(range->max_proto.all);
++ if (unlikely(max < min))
++ swap(max, min);
++ range_size = max - min + 1;
+ }
+
+ if (range->flags & NF_NAT_RANGE_PROTO_RANDOM) {
+diff --git a/net/netfilter/xt_IDLETIMER.c b/net/netfilter/xt_IDLETIMER.c
+index f407ebc13481..95b6dedc5ac7 100644
+--- a/net/netfilter/xt_IDLETIMER.c
++++ b/net/netfilter/xt_IDLETIMER.c
+@@ -146,11 +146,11 @@ static int idletimer_tg_create(struct idletimer_tg_info *info)
+ (unsigned long) info->timer);
+ info->timer->refcnt = 1;
+
++ INIT_WORK(&info->timer->work, idletimer_tg_work);
++
+ mod_timer(&info->timer->timer,
+ msecs_to_jiffies(info->timeout * 1000) + jiffies);
+
+- INIT_WORK(&info->timer->work, idletimer_tg_work);
+-
+ return 0;
+
+ out_free_attr:
+@@ -191,7 +191,10 @@ static int idletimer_tg_checkentry(const struct xt_tgchk_param *par)
+ pr_debug("timeout value is zero\n");
+ return -EINVAL;
+ }
+-
++ if (info->timeout >= INT_MAX / 1000) {
++ pr_debug("timeout value is too big\n");
++ return -EINVAL;
++ }
+ if (info->label[0] == '\0' ||
+ strnlen(info->label,
+ MAX_IDLETIMER_LABEL_SIZE) == MAX_IDLETIMER_LABEL_SIZE) {
+diff --git a/net/netfilter/xt_LED.c b/net/netfilter/xt_LED.c
+index 3ba31c194cce..0858fe17e14a 100644
+--- a/net/netfilter/xt_LED.c
++++ b/net/netfilter/xt_LED.c
+@@ -141,10 +141,11 @@ static int led_tg_check(const struct xt_tgchk_param *par)
+ goto exit_alloc;
+ }
+
+- /* See if we need to set up a timer */
+- if (ledinfo->delay > 0)
+- setup_timer(&ledinternal->timer, led_timeout_callback,
+- (unsigned long)ledinternal);
++ /* Since the letinternal timer can be shared between multiple targets,
++ * always set it up, even if the current target does not need it
++ */
++ setup_timer(&ledinternal->timer, led_timeout_callback,
++ (unsigned long)ledinternal);
+
+ list_add_tail(&ledinternal->list, &xt_led_triggers);
+
+@@ -181,8 +182,7 @@ static void led_tg_destroy(const struct xt_tgdtor_param *par)
+
+ list_del(&ledinternal->list);
+
+- if (ledinfo->delay > 0)
+- del_timer_sync(&ledinternal->timer);
++ del_timer_sync(&ledinternal->timer);
+
+ led_trigger_unregister(&ledinternal->netfilter_led_trigger);
+
+diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
+index 3d111b053e3e..97c22c818134 100644
+--- a/net/netlink/genetlink.c
++++ b/net/netlink/genetlink.c
+@@ -1118,6 +1118,7 @@ static int genlmsg_mcast(struct sk_buff *skb, u32 portid, unsigned long group,
+ {
+ struct sk_buff *tmp;
+ struct net *net, *prev = NULL;
++ bool delivered = false;
+ int err;
+
+ for_each_net_rcu(net) {
+@@ -1129,14 +1130,21 @@ static int genlmsg_mcast(struct sk_buff *skb, u32 portid, unsigned long group,
+ }
+ err = nlmsg_multicast(prev->genl_sock, tmp,
+ portid, group, flags);
+- if (err)
++ if (!err)
++ delivered = true;
++ else if (err != -ESRCH)
+ goto error;
+ }
+
+ prev = net;
+ }
+
+- return nlmsg_multicast(prev->genl_sock, skb, portid, group, flags);
++ err = nlmsg_multicast(prev->genl_sock, skb, portid, group, flags);
++ if (!err)
++ delivered = true;
++ else if (err != -ESRCH)
++ goto error;
++ return delivered ? 0 : -ESRCH;
+ error:
+ kfree_skb(skb);
+ return err;
+diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
+index 83a07d468644..5235f56d735d 100644
+--- a/net/sctp/sm_make_chunk.c
++++ b/net/sctp/sm_make_chunk.c
+@@ -1367,10 +1367,14 @@ static struct sctp_chunk *_sctp_make_chunk(const struct sctp_association *asoc,
+ sctp_chunkhdr_t *chunk_hdr;
+ struct sk_buff *skb;
+ struct sock *sk;
++ int chunklen;
++
++ chunklen = sizeof(*chunk_hdr) + paylen;
++ if (chunklen > SCTP_MAX_CHUNK_LEN)
++ goto nodata;
+
+ /* No need to allocate LL here, as this is only a chunk. */
+- skb = alloc_skb(WORD_ROUND(sizeof(sctp_chunkhdr_t) + paylen),
+- GFP_ATOMIC);
++ skb = alloc_skb(chunklen, GFP_ATOMIC);
+ if (!skb)
+ goto nodata;
+
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index c44e3d208804..195b54a19f1e 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -4455,7 +4455,7 @@ static int sctp_getsockopt_autoclose(struct sock *sk, int len, char __user *optv
+ len = sizeof(int);
+ if (put_user(len, optlen))
+ return -EFAULT;
+- if (copy_to_user(optval, &sctp_sk(sk)->autoclose, sizeof(int)))
++ if (copy_to_user(optval, &sctp_sk(sk)->autoclose, len))
+ return -EFAULT;
+ return 0;
+ }
+@@ -5032,6 +5032,9 @@ copy_getaddrs:
+ err = -EFAULT;
+ goto out;
+ }
++ /* XXX: We should have accounted for sizeof(struct sctp_getaddrs) too,
++ * but we can't change it anymore.
++ */
+ if (put_user(bytes_copied, optlen))
+ err = -EFAULT;
+ out:
+@@ -5468,7 +5471,7 @@ static int sctp_getsockopt_maxseg(struct sock *sk, int len,
+ params.assoc_id = 0;
+ } else if (len >= sizeof(struct sctp_assoc_value)) {
+ len = sizeof(struct sctp_assoc_value);
+- if (copy_from_user(¶ms, optval, sizeof(params)))
++ if (copy_from_user(¶ms, optval, len))
+ return -EFAULT;
+ } else
+ return -EINVAL;
+@@ -5637,7 +5640,9 @@ static int sctp_getsockopt_active_key(struct sock *sk, int len,
+
+ if (len < sizeof(struct sctp_authkeyid))
+ return -EINVAL;
+- if (copy_from_user(&val, optval, sizeof(struct sctp_authkeyid)))
++
++ len = sizeof(struct sctp_authkeyid);
++ if (copy_from_user(&val, optval, len))
+ return -EFAULT;
+
+ asoc = sctp_id2assoc(sk, val.scact_assoc_id);
+@@ -5649,7 +5654,6 @@ static int sctp_getsockopt_active_key(struct sock *sk, int len,
+ else
+ val.scact_keynumber = ep->active_key_id;
+
+- len = sizeof(struct sctp_authkeyid);
+ if (put_user(len, optlen))
+ return -EFAULT;
+ if (copy_to_user(optval, &val, len))
+@@ -5675,7 +5679,7 @@ static int sctp_getsockopt_peer_auth_chunks(struct sock *sk, int len,
+ if (len < sizeof(struct sctp_authchunks))
+ return -EINVAL;
+
+- if (copy_from_user(&val, optval, sizeof(struct sctp_authchunks)))
++ if (copy_from_user(&val, optval, sizeof(val)))
+ return -EFAULT;
+
+ to = p->gauth_chunks;
+@@ -5720,7 +5724,7 @@ static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
+ if (len < sizeof(struct sctp_authchunks))
+ return -EINVAL;
+
+- if (copy_from_user(&val, optval, sizeof(struct sctp_authchunks)))
++ if (copy_from_user(&val, optval, sizeof(val)))
+ return -EFAULT;
+
+ to = p->gauth_chunks;
+diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
+index b9ce5da25938..dac0a54e39de 100644
+--- a/sound/core/seq/seq_clientmgr.c
++++ b/sound/core/seq/seq_clientmgr.c
+@@ -919,7 +919,8 @@ int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop)
+ static int snd_seq_client_enqueue_event(struct snd_seq_client *client,
+ struct snd_seq_event *event,
+ struct file *file, int blocking,
+- int atomic, int hop)
++ int atomic, int hop,
++ struct mutex *mutexp)
+ {
+ struct snd_seq_event_cell *cell;
+ int err;
+@@ -957,7 +958,8 @@ static int snd_seq_client_enqueue_event(struct snd_seq_client *client,
+ return -ENXIO; /* queue is not allocated */
+
+ /* allocate an event cell */
+- err = snd_seq_event_dup(client->pool, event, &cell, !blocking || atomic, file);
++ err = snd_seq_event_dup(client->pool, event, &cell, !blocking || atomic,
++ file, mutexp);
+ if (err < 0)
+ return err;
+
+@@ -1026,12 +1028,11 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
+ return -ENXIO;
+
+ /* allocate the pool now if the pool is not allocated yet */
++ mutex_lock(&client->ioctl_mutex);
+ if (client->pool->size > 0 && !snd_seq_write_pool_allocated(client)) {
+- mutex_lock(&client->ioctl_mutex);
+ err = snd_seq_pool_init(client->pool);
+- mutex_unlock(&client->ioctl_mutex);
+ if (err < 0)
+- return -ENOMEM;
++ goto out;
+ }
+
+ /* only process whole events */
+@@ -1082,7 +1083,7 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
+ /* ok, enqueue it */
+ err = snd_seq_client_enqueue_event(client, &event, file,
+ !(file->f_flags & O_NONBLOCK),
+- 0, 0);
++ 0, 0, &client->ioctl_mutex);
+ if (err < 0)
+ break;
+
+@@ -1093,6 +1094,8 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
+ written += len;
+ }
+
++ out:
++ mutex_unlock(&client->ioctl_mutex);
+ return written ? written : err;
+ }
+
+@@ -1924,6 +1927,9 @@ static int snd_seq_ioctl_set_client_pool(struct snd_seq_client *client,
+ (! snd_seq_write_pool_allocated(client) ||
+ info.output_pool != client->pool->size)) {
+ if (snd_seq_write_pool_allocated(client)) {
++ /* is the pool in use? */
++ if (atomic_read(&client->pool->counter))
++ return -EBUSY;
+ /* remove all existing cells */
+ snd_seq_pool_mark_closing(client->pool);
+ snd_seq_queue_client_leave_cells(client->number);
+@@ -2348,7 +2354,8 @@ static int kernel_client_enqueue(int client, struct snd_seq_event *ev,
+ if (! cptr->accept_output)
+ result = -EPERM;
+ else /* send it */
+- result = snd_seq_client_enqueue_event(cptr, ev, file, blocking, atomic, hop);
++ result = snd_seq_client_enqueue_event(cptr, ev, file, blocking,
++ atomic, hop, NULL);
+
+ snd_seq_client_unlock(cptr);
+ return result;
+diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c
+index 3490d21ab9e7..9acbed1ac982 100644
+--- a/sound/core/seq/seq_fifo.c
++++ b/sound/core/seq/seq_fifo.c
+@@ -123,7 +123,7 @@ int snd_seq_fifo_event_in(struct snd_seq_fifo *f,
+ return -EINVAL;
+
+ snd_use_lock_use(&f->use_lock);
+- err = snd_seq_event_dup(f->pool, event, &cell, 1, NULL); /* always non-blocking */
++ err = snd_seq_event_dup(f->pool, event, &cell, 1, NULL, NULL); /* always non-blocking */
+ if (err < 0) {
+ if ((err == -ENOMEM) || (err == -EAGAIN))
+ atomic_inc(&f->overflow);
+diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c
+index 5847c4475bf3..4c8cbcd89887 100644
+--- a/sound/core/seq/seq_memory.c
++++ b/sound/core/seq/seq_memory.c
+@@ -221,7 +221,8 @@ void snd_seq_cell_free(struct snd_seq_event_cell * cell)
+ */
+ static int snd_seq_cell_alloc(struct snd_seq_pool *pool,
+ struct snd_seq_event_cell **cellp,
+- int nonblock, struct file *file)
++ int nonblock, struct file *file,
++ struct mutex *mutexp)
+ {
+ struct snd_seq_event_cell *cell;
+ unsigned long flags;
+@@ -245,7 +246,11 @@ static int snd_seq_cell_alloc(struct snd_seq_pool *pool,
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue(&pool->output_sleep, &wait);
+ spin_unlock_irq(&pool->lock);
++ if (mutexp)
++ mutex_unlock(mutexp);
+ schedule();
++ if (mutexp)
++ mutex_lock(mutexp);
+ spin_lock_irq(&pool->lock);
+ remove_wait_queue(&pool->output_sleep, &wait);
+ /* interrupted? */
+@@ -288,7 +293,7 @@ __error:
+ */
+ int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
+ struct snd_seq_event_cell **cellp, int nonblock,
+- struct file *file)
++ struct file *file, struct mutex *mutexp)
+ {
+ int ncells, err;
+ unsigned int extlen;
+@@ -305,7 +310,7 @@ int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
+ if (ncells >= pool->total_elements)
+ return -ENOMEM;
+
+- err = snd_seq_cell_alloc(pool, &cell, nonblock, file);
++ err = snd_seq_cell_alloc(pool, &cell, nonblock, file, mutexp);
+ if (err < 0)
+ return err;
+
+@@ -331,7 +336,8 @@ int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
+ int size = sizeof(struct snd_seq_event);
+ if (len < size)
+ size = len;
+- err = snd_seq_cell_alloc(pool, &tmp, nonblock, file);
++ err = snd_seq_cell_alloc(pool, &tmp, nonblock, file,
++ mutexp);
+ if (err < 0)
+ goto __error;
+ if (cell->event.data.ext.ptr == NULL)
+diff --git a/sound/core/seq/seq_memory.h b/sound/core/seq/seq_memory.h
+index 32f959c17786..3abe306c394a 100644
+--- a/sound/core/seq/seq_memory.h
++++ b/sound/core/seq/seq_memory.h
+@@ -66,7 +66,8 @@ struct snd_seq_pool {
+ void snd_seq_cell_free(struct snd_seq_event_cell *cell);
+
+ int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
+- struct snd_seq_event_cell **cellp, int nonblock, struct file *file);
++ struct snd_seq_event_cell **cellp, int nonblock,
++ struct file *file, struct mutex *mutexp);
+
+ /* return number of unused (free) cells */
+ static inline int snd_seq_unused_cells(struct snd_seq_pool *pool)
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 861dc57cb082..0fd1402e427b 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4615,6 +4615,16 @@ static void alc298_fixup_speaker_volume(struct hda_codec *codec,
+ }
+ }
+
++/* disable DAC3 (0x06) selection on NID 0x17 as it has no volume amp control */
++static void alc295_fixup_disable_dac3(struct hda_codec *codec,
++ const struct hda_fixup *fix, int action)
++{
++ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
++ hda_nid_t conn[2] = { 0x02, 0x03 };
++ snd_hda_override_conn_list(codec, 0x17, 2, conn);
++ }
++}
++
+ /* Hook to update amp GPIO4 for automute */
+ static void alc280_hp_gpio4_automute_hook(struct hda_codec *codec,
+ struct hda_jack_callback *jack)
+@@ -4764,6 +4774,7 @@ enum {
+ ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY,
+ ALC255_FIXUP_DELL_SPK_NOISE,
+ ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC295_FIXUP_DISABLE_DAC3,
+ ALC280_FIXUP_HP_HEADSET_MIC,
+ ALC221_FIXUP_HP_FRONT_MIC,
+ ALC292_FIXUP_TPT460,
+@@ -5453,6 +5464,10 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC298_FIXUP_DELL_AIO_MIC_NO_PRESENCE,
+ },
++ [ALC295_FIXUP_DISABLE_DAC3] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc295_fixup_disable_dac3,
++ },
+ [ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+@@ -5510,6 +5525,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x075b, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x075d, "Dell AIO", ALC298_FIXUP_SPK_VOLUME),
++ SND_PCI_QUIRK(0x1028, 0x07b0, "Dell Precision 7520", ALC295_FIXUP_DISABLE_DAC3),
+ SND_PCI_QUIRK(0x1028, 0x0798, "Dell Inspiron 17 7000 Gaming", ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER),
+ SND_PCI_QUIRK(0x1028, 0x082a, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
+index 32719f28aa86..c7c8aac1ace6 100644
+--- a/sound/usb/quirks-table.h
++++ b/sound/usb/quirks-table.h
+@@ -3274,4 +3274,51 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
+ }
+ },
+
++{
++ /*
++ * Bower's & Wilkins PX headphones only support the 48 kHz sample rate
++ * even though it advertises more. The capture interface doesn't work
++ * even on windows.
++ */
++ USB_DEVICE(0x19b5, 0x0021),
++ .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
++ .ifnum = QUIRK_ANY_INTERFACE,
++ .type = QUIRK_COMPOSITE,
++ .data = (const struct snd_usb_audio_quirk[]) {
++ {
++ .ifnum = 0,
++ .type = QUIRK_AUDIO_STANDARD_MIXER,
++ },
++ /* Capture */
++ {
++ .ifnum = 1,
++ .type = QUIRK_IGNORE_INTERFACE,
++ },
++ /* Playback */
++ {
++ .ifnum = 2,
++ .type = QUIRK_AUDIO_FIXED_ENDPOINT,
++ .data = &(const struct audioformat) {
++ .formats = SNDRV_PCM_FMTBIT_S16_LE,
++ .channels = 2,
++ .iface = 2,
++ .altsetting = 1,
++ .altset_idx = 1,
++ .attributes = UAC_EP_CS_ATTR_FILL_MAX |
++ UAC_EP_CS_ATTR_SAMPLE_RATE,
++ .endpoint = 0x03,
++ .ep_attr = USB_ENDPOINT_XFER_ISOC,
++ .rates = SNDRV_PCM_RATE_48000,
++ .rate_min = 48000,
++ .rate_max = 48000,
++ .nr_rates = 1,
++ .rate_table = (unsigned int[]) {
++ 48000
++ }
++ }
++ },
++ }
++ }
++},
++
+ #undef USB_DEVICE_VENDOR_SPEC
diff --git a/1051_linux-4.1.52.patch b/1051_linux-4.1.52.patch
new file mode 100644
index 0000000..6648ea5
--- /dev/null
+++ b/1051_linux-4.1.52.patch
@@ -0,0 +1,15535 @@
+diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt
+index caf297bee1fb..c28d4eb83b76 100644
+--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt
++++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt
+@@ -35,6 +35,15 @@ Optional properties:
+ - ti,palmas-enable-dvfs2: Enable DVFS2. Configure pins for DVFS2 mode.
+ Selection primary or secondary function associated to GPADC_START
+ and SYSEN2 pin/pad for DVFS2 interface
++- ti,palmas-override-powerhold: This is applicable for PMICs for which
++ GPIO7 is configured in POWERHOLD mode which has higher priority
++ over DEV_ON bit and keeps the PMIC supplies on even after the DEV_ON
++ bit is turned off. This property enables driver to over ride the
++ POWERHOLD value to GPIO7 so as to turn off the PMIC in power off
++ scenarios. So for GPIO7 if ti,palmas-override-powerhold is set
++ then the GPIO_7 field should never be muxed to anything else.
++ It should be set to POWERHOLD by default and only in case of
++ power off scenarios the driver will over ride the mux value.
+
+ This binding uses the following generic properties as defined in
+ pinctrl-bindings.txt:
+diff --git a/Makefile b/Makefile
+index caccc6f16d62..1f5560281f70 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 51
++SUBLEVEL = 52
+ EXTRAVERSION =
+ NAME = Series 4800
+
+@@ -772,6 +772,15 @@ KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
+ # disable invalid "can't wrap" optimizations for signed / pointers
+ KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
+
++# clang sets -fmerge-all-constants by default as optimization, but this
++# is non-conforming behavior for C and in fact breaks the kernel, so we
++# need to disable it here generally.
++KBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants)
++
++# for gcc -fno-merge-all-constants disables everything, but it is fine
++# to have actual conforming behavior enabled.
++KBUILD_CFLAGS += $(call cc-option,-fmerge-constants)
++
+ # Make sure -fstack-check isn't enabled (like gentoo apparently did)
+ KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,)
+
+diff --git a/arch/alpha/kernel/console.c b/arch/alpha/kernel/console.c
+index 6a61deed4a85..ab228ed45945 100644
+--- a/arch/alpha/kernel/console.c
++++ b/arch/alpha/kernel/console.c
+@@ -20,6 +20,7 @@
+ struct pci_controller *pci_vga_hose;
+ static struct resource alpha_vga = {
+ .name = "alpha-vga+",
++ .flags = IORESOURCE_IO,
+ .start = 0x3C0,
+ .end = 0x3DF
+ };
+diff --git a/arch/arm/boot/dts/am335x-pepper.dts b/arch/arm/boot/dts/am335x-pepper.dts
+index 0d35ab64641c..ac3ca3636405 100644
+--- a/arch/arm/boot/dts/am335x-pepper.dts
++++ b/arch/arm/boot/dts/am335x-pepper.dts
+@@ -138,7 +138,7 @@
+ &audio_codec {
+ status = "okay";
+
+- gpio-reset = <&gpio1 16 GPIO_ACTIVE_LOW>;
++ reset-gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;
+ AVDD-supply = <&ldo3_reg>;
+ IOVDD-supply = <&ldo3_reg>;
+ DRVDD-supply = <&ldo3_reg>;
+diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
+index e8397879d0a7..825237d03168 100644
+--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
++++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
+@@ -299,6 +299,7 @@
+ interrupt-controller;
+
+ ti,system-power-controller;
++ ti,palmas-override-powerhold;
+
+ tps659038_pmic {
+ compatible = "ti,tps659038-pmic";
+diff --git a/arch/arm/boot/dts/at91sam9g25.dtsi b/arch/arm/boot/dts/at91sam9g25.dtsi
+index a7da0dd0c98f..0898213f3bb2 100644
+--- a/arch/arm/boot/dts/at91sam9g25.dtsi
++++ b/arch/arm/boot/dts/at91sam9g25.dtsi
+@@ -21,7 +21,7 @@
+ atmel,mux-mask = <
+ /* A B C */
+ 0xffffffff 0xffe0399f 0xc000001c /* pioA */
+- 0x0007ffff 0x8000fe3f 0x00000000 /* pioB */
++ 0x0007ffff 0x00047e3f 0x00000000 /* pioB */
+ 0x80000000 0x07c0ffff 0xb83fffff /* pioC */
+ 0x003fffff 0x003f8000 0x00000000 /* pioD */
+ >;
+diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
+index 096f68be99e2..1e6369c24645 100644
+--- a/arch/arm/boot/dts/dra7-evm.dts
++++ b/arch/arm/boot/dts/dra7-evm.dts
+@@ -285,6 +285,8 @@
+ tps659038: tps659038@58 {
+ compatible = "ti,tps659038";
+ reg = <0x58>;
++ ti,palmas-override-powerhold;
++ ti,system-power-controller;
+
+ tps659038_pmic {
+ compatible = "ti,tps659038-pmic";
+diff --git a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
+index 9e096d811bed..7a032dd84bb2 100644
+--- a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
+@@ -88,6 +88,7 @@
+ clocks = <&clks 201>;
+ VDDA-supply = <®_2p5v>;
+ VDDIO-supply = <®_3p3v>;
++ lrclk-strength = <3>;
+ };
+ };
+
+diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi
+index c70bb27ac65a..3429ceb1d577 100644
+--- a/arch/arm/boot/dts/ls1021a.dtsi
++++ b/arch/arm/boot/dts/ls1021a.dtsi
+@@ -128,7 +128,7 @@
+ };
+
+ esdhc: esdhc@1560000 {
+- compatible = "fsl,esdhc";
++ compatible = "fsl,ls1021a-esdhc", "fsl,esdhc";
+ reg = <0x0 0x1560000 0x0 0x10000>;
+ interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <0>;
+diff --git a/arch/arm/boot/dts/moxart-uc7112lx.dts b/arch/arm/boot/dts/moxart-uc7112lx.dts
+index 10d088df0c35..4a962a26482d 100644
+--- a/arch/arm/boot/dts/moxart-uc7112lx.dts
++++ b/arch/arm/boot/dts/moxart-uc7112lx.dts
+@@ -6,7 +6,7 @@
+ */
+
+ /dts-v1/;
+-/include/ "moxart.dtsi"
++#include "moxart.dtsi"
+
+ / {
+ model = "MOXA UC-7112-LX";
+diff --git a/arch/arm/boot/dts/moxart.dtsi b/arch/arm/boot/dts/moxart.dtsi
+index 1fd27ed65a01..64f2f44235d0 100644
+--- a/arch/arm/boot/dts/moxart.dtsi
++++ b/arch/arm/boot/dts/moxart.dtsi
+@@ -6,6 +6,7 @@
+ */
+
+ /include/ "skeleton.dtsi"
++#include <dt-bindings/interrupt-controller/irq.h>
+
+ / {
+ compatible = "moxa,moxart";
+@@ -36,8 +37,8 @@
+ ranges;
+
+ intc: interrupt-controller@98800000 {
+- compatible = "moxa,moxart-ic";
+- reg = <0x98800000 0x38>;
++ compatible = "moxa,moxart-ic", "faraday,ftintc010";
++ reg = <0x98800000 0x100>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupt-mask = <0x00080000>;
+@@ -59,7 +60,7 @@
+ timer: timer@98400000 {
+ compatible = "moxa,moxart-timer";
+ reg = <0x98400000 0x42>;
+- interrupts = <19 1>;
++ interrupts = <19 IRQ_TYPE_EDGE_FALLING>;
+ clocks = <&clk_apb>;
+ };
+
+@@ -80,7 +81,7 @@
+ dma: dma@90500000 {
+ compatible = "moxa,moxart-dma";
+ reg = <0x90500080 0x40>;
+- interrupts = <24 0>;
++ interrupts = <24 IRQ_TYPE_LEVEL_HIGH>;
+ #dma-cells = <1>;
+ };
+
+@@ -93,7 +94,7 @@
+ sdhci: sdhci@98e00000 {
+ compatible = "moxa,moxart-sdhci";
+ reg = <0x98e00000 0x5C>;
+- interrupts = <5 0>;
++ interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_apb>;
+ dmas = <&dma 5>,
+ <&dma 5>;
+@@ -120,7 +121,7 @@
+ mac0: mac@90900000 {
+ compatible = "moxa,moxart-mac";
+ reg = <0x90900000 0x90>;
+- interrupts = <25 0>;
++ interrupts = <25 IRQ_TYPE_LEVEL_HIGH>;
+ phy-handle = <ðphy0>;
+ phy-mode = "mii";
+ status = "disabled";
+@@ -129,7 +130,7 @@
+ mac1: mac@92000000 {
+ compatible = "moxa,moxart-mac";
+ reg = <0x92000000 0x90>;
+- interrupts = <27 0>;
++ interrupts = <27 IRQ_TYPE_LEVEL_HIGH>;
+ phy-handle = <ðphy1>;
+ phy-mode = "mii";
+ status = "disabled";
+@@ -138,7 +139,7 @@
+ uart0: uart@98200000 {
+ compatible = "ns16550a";
+ reg = <0x98200000 0x20>;
+- interrupts = <31 8>;
++ interrupts = <31 IRQ_TYPE_LEVEL_HIGH>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clock-frequency = <14745600>;
+diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts
+index 27cd4abfc74d..731860314ab5 100644
+--- a/arch/arm/boot/dts/omap3-n900.dts
++++ b/arch/arm/boot/dts/omap3-n900.dts
+@@ -488,7 +488,7 @@
+ tlv320aic3x: tlv320aic3x@18 {
+ compatible = "ti,tlv320aic3x";
+ reg = <0x18>;
+- gpio-reset = <&gpio2 28 GPIO_ACTIVE_HIGH>; /* 60 */
++ reset-gpios = <&gpio2 28 GPIO_ACTIVE_LOW>; /* 60 */
+ ai3x-gpio-func = <
+ 0 /* AIC3X_GPIO1_FUNC_DISABLED */
+ 5 /* AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT */
+@@ -505,7 +505,7 @@
+ tlv320aic3x_aux: tlv320aic3x@19 {
+ compatible = "ti,tlv320aic3x";
+ reg = <0x19>;
+- gpio-reset = <&gpio2 28 GPIO_ACTIVE_HIGH>; /* 60 */
++ reset-gpios = <&gpio2 28 GPIO_ACTIVE_LOW>; /* 60 */
+
+ AVDD-supply = <&vmmc2>;
+ DRVDD-supply = <&vmmc2>;
+diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi
+index 4bb2f4c17321..07f31efec974 100644
+--- a/arch/arm/boot/dts/r8a7790.dtsi
++++ b/arch/arm/boot/dts/r8a7790.dtsi
+@@ -1227,8 +1227,11 @@
+ compatible = "renesas,r8a7790-mstp-clocks", "renesas,cpg-mstp-clocks";
+ reg = <0 0xe6150998 0 4>, <0 0xe61509a8 0 4>;
+ clocks = <&p_clk>,
+- <&p_clk>, <&p_clk>, <&p_clk>, <&p_clk>, <&p_clk>,
+- <&p_clk>, <&p_clk>, <&p_clk>, <&p_clk>, <&p_clk>,
++ <&mstp10_clks R8A7790_CLK_SSI_ALL>, <&mstp10_clks R8A7790_CLK_SSI_ALL>,
++ <&mstp10_clks R8A7790_CLK_SSI_ALL>, <&mstp10_clks R8A7790_CLK_SSI_ALL>,
++ <&mstp10_clks R8A7790_CLK_SSI_ALL>, <&mstp10_clks R8A7790_CLK_SSI_ALL>,
++ <&mstp10_clks R8A7790_CLK_SSI_ALL>, <&mstp10_clks R8A7790_CLK_SSI_ALL>,
++ <&mstp10_clks R8A7790_CLK_SSI_ALL>, <&mstp10_clks R8A7790_CLK_SSI_ALL>,
+ <&p_clk>,
+ <&mstp10_clks R8A7790_CLK_SCU_ALL>, <&mstp10_clks R8A7790_CLK_SCU_ALL>,
+ <&mstp10_clks R8A7790_CLK_SCU_ALL>, <&mstp10_clks R8A7790_CLK_SCU_ALL>,
+diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
+index 824ddab9c3ad..19106ceecd3a 100644
+--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
++++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
+@@ -273,7 +273,7 @@
+ x2_clk: x2-clock {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+- clock-frequency = <148500000>;
++ clock-frequency = <74250000>;
+ };
+
+ x13_clk: x13-clock {
+diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
+index 4696062f6dde..96cd539ee4c6 100644
+--- a/arch/arm/boot/dts/r8a7791.dtsi
++++ b/arch/arm/boot/dts/r8a7791.dtsi
+@@ -1232,8 +1232,11 @@
+ compatible = "renesas,r8a7791-mstp-clocks", "renesas,cpg-mstp-clocks";
+ reg = <0 0xe6150998 0 4>, <0 0xe61509a8 0 4>;
+ clocks = <&p_clk>,
+- <&p_clk>, <&p_clk>, <&p_clk>, <&p_clk>, <&p_clk>,
+- <&p_clk>, <&p_clk>, <&p_clk>, <&p_clk>, <&p_clk>,
++ <&mstp10_clks R8A7791_CLK_SSI_ALL>, <&mstp10_clks R8A7791_CLK_SSI_ALL>,
++ <&mstp10_clks R8A7791_CLK_SSI_ALL>, <&mstp10_clks R8A7791_CLK_SSI_ALL>,
++ <&mstp10_clks R8A7791_CLK_SSI_ALL>, <&mstp10_clks R8A7791_CLK_SSI_ALL>,
++ <&mstp10_clks R8A7791_CLK_SSI_ALL>, <&mstp10_clks R8A7791_CLK_SSI_ALL>,
++ <&mstp10_clks R8A7791_CLK_SSI_ALL>, <&mstp10_clks R8A7791_CLK_SSI_ALL>,
+ <&p_clk>,
+ <&mstp10_clks R8A7791_CLK_SCU_ALL>, <&mstp10_clks R8A7791_CLK_SCU_ALL>,
+ <&mstp10_clks R8A7791_CLK_SCU_ALL>, <&mstp10_clks R8A7791_CLK_SCU_ALL>,
+diff --git a/arch/arm/include/asm/xen/events.h b/arch/arm/include/asm/xen/events.h
+index 8b1f37bfeeec..b7aadab9b0e8 100644
+--- a/arch/arm/include/asm/xen/events.h
++++ b/arch/arm/include/asm/xen/events.h
+@@ -16,7 +16,7 @@ static inline int xen_irqs_disabled(struct pt_regs *regs)
+ return raw_irqs_disabled_flags(regs->ARM_cpsr);
+ }
+
+-#define xchg_xen_ulong(ptr, val) atomic64_xchg(container_of((ptr), \
++#define xchg_xen_ulong(ptr, val) atomic64_xchg(container_of((long long*)(ptr),\
+ atomic64_t, \
+ counter), (val))
+
+diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
+index 709ee1d6d4df..faa9a905826e 100644
+--- a/arch/arm/kernel/ftrace.c
++++ b/arch/arm/kernel/ftrace.c
+@@ -29,11 +29,6 @@
+ #endif
+
+ #ifdef CONFIG_DYNAMIC_FTRACE
+-#ifdef CONFIG_OLD_MCOUNT
+-#define OLD_MCOUNT_ADDR ((unsigned long) mcount)
+-#define OLD_FTRACE_ADDR ((unsigned long) ftrace_caller_old)
+-
+-#define OLD_NOP 0xe1a00000 /* mov r0, r0 */
+
+ static int __ftrace_modify_code(void *data)
+ {
+@@ -51,6 +46,12 @@ void arch_ftrace_update_code(int command)
+ stop_machine(__ftrace_modify_code, &command, NULL);
+ }
+
++#ifdef CONFIG_OLD_MCOUNT
++#define OLD_MCOUNT_ADDR ((unsigned long) mcount)
++#define OLD_FTRACE_ADDR ((unsigned long) ftrace_caller_old)
++
++#define OLD_NOP 0xe1a00000 /* mov r0, r0 */
++
+ static unsigned long ftrace_nop_replace(struct dyn_ftrace *rec)
+ {
+ return rec->arch.old_mcount ? OLD_NOP : NOP;
+diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
+index 4a86a0133ac3..016c87fc9b69 100644
+--- a/arch/arm/kernel/perf_event.c
++++ b/arch/arm/kernel/perf_event.c
+@@ -311,10 +311,16 @@ validate_group(struct perf_event *event)
+ return 0;
+ }
+
++static struct arm_pmu_platdata *armpmu_get_platdata(struct arm_pmu *armpmu)
++{
++ struct platform_device *pdev = armpmu->plat_device;
++
++ return pdev ? dev_get_platdata(&pdev->dev) : NULL;
++}
++
+ static irqreturn_t armpmu_dispatch_irq(int irq, void *dev)
+ {
+ struct arm_pmu *armpmu;
+- struct platform_device *plat_device;
+ struct arm_pmu_platdata *plat;
+ int ret;
+ u64 start_clock, finish_clock;
+@@ -326,8 +332,8 @@ static irqreturn_t armpmu_dispatch_irq(int irq, void *dev)
+ * dereference.
+ */
+ armpmu = *(void **)dev;
+- plat_device = armpmu->plat_device;
+- plat = dev_get_platdata(&plat_device->dev);
++
++ plat = armpmu_get_platdata(armpmu);
+
+ start_clock = sched_clock();
+ if (plat && plat->handle_irq)
+diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
+index ddfdd820e6f2..6bad2a02a2f9 100644
+--- a/arch/arm/mach-davinci/devices-da8xx.c
++++ b/arch/arm/mach-davinci/devices-da8xx.c
+@@ -827,6 +827,8 @@ static struct platform_device da8xx_dsp = {
+ .resource = da8xx_rproc_resources,
+ };
+
++static bool rproc_mem_inited __initdata;
++
+ #if IS_ENABLED(CONFIG_DA8XX_REMOTEPROC)
+
+ static phys_addr_t rproc_base __initdata;
+@@ -865,6 +867,8 @@ void __init da8xx_rproc_reserve_cma(void)
+ ret = dma_declare_contiguous(&da8xx_dsp.dev, rproc_size, rproc_base, 0);
+ if (ret)
+ pr_err("%s: dma_declare_contiguous failed %d\n", __func__, ret);
++ else
++ rproc_mem_inited = true;
+ }
+
+ #else
+@@ -879,6 +883,12 @@ int __init da8xx_register_rproc(void)
+ {
+ int ret;
+
++ if (!rproc_mem_inited) {
++ pr_warn("%s: memory not reserved for DSP, not registering DSP device\n",
++ __func__);
++ return -ENOMEM;
++ }
++
+ ret = platform_device_register(&da8xx_dsp);
+ if (ret)
+ pr_err("%s: can't register DSP device: %d\n", __func__, ret);
+diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
+index a2e8ef3c0bd9..777531ef58d6 100644
+--- a/arch/arm/mach-imx/clk-imx6q.c
++++ b/arch/arm/mach-imx/clk-imx6q.c
+@@ -402,7 +402,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
+ clk[IMX6QDL_CLK_GPU2D_CORE] = imx_clk_gate2("gpu2d_core", "gpu2d_core_podf", base + 0x6c, 24);
+ clk[IMX6QDL_CLK_GPU3D_CORE] = imx_clk_gate2("gpu3d_core", "gpu3d_core_podf", base + 0x6c, 26);
+ clk[IMX6QDL_CLK_HDMI_IAHB] = imx_clk_gate2("hdmi_iahb", "ahb", base + 0x70, 0);
+- clk[IMX6QDL_CLK_HDMI_ISFR] = imx_clk_gate2("hdmi_isfr", "video_27m", base + 0x70, 4);
++ clk[IMX6QDL_CLK_HDMI_ISFR] = imx_clk_gate2("hdmi_isfr", "mipi_core_cfg", base + 0x70, 4);
+ clk[IMX6QDL_CLK_I2C1] = imx_clk_gate2("i2c1", "ipg_per", base + 0x70, 6);
+ clk[IMX6QDL_CLK_I2C2] = imx_clk_gate2("i2c2", "ipg_per", base + 0x70, 8);
+ clk[IMX6QDL_CLK_I2C3] = imx_clk_gate2("i2c3", "ipg_per", base + 0x70, 10);
+diff --git a/arch/arm/mach-omap2/clockdomains7xx_data.c b/arch/arm/mach-omap2/clockdomains7xx_data.c
+index 7581e036bda6..70e3b711e79c 100644
+--- a/arch/arm/mach-omap2/clockdomains7xx_data.c
++++ b/arch/arm/mach-omap2/clockdomains7xx_data.c
+@@ -524,7 +524,7 @@ static struct clockdomain pcie_7xx_clkdm = {
+ .dep_bit = DRA7XX_PCIE_STATDEP_SHIFT,
+ .wkdep_srcs = pcie_wkup_sleep_deps,
+ .sleepdep_srcs = pcie_wkup_sleep_deps,
+- .flags = CLKDM_CAN_HWSUP_SWSUP,
++ .flags = CLKDM_CAN_SWSUP,
+ };
+
+ static struct clockdomain atl_7xx_clkdm = {
+diff --git a/arch/arm64/include/asm/futex.h b/arch/arm64/include/asm/futex.h
+index 5f750dc96e0f..49d057eb93d6 100644
+--- a/arch/arm64/include/asm/futex.h
++++ b/arch/arm64/include/asm/futex.h
+@@ -44,16 +44,16 @@
+ : "memory")
+
+ static inline int
+-futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
++futex_atomic_op_inuser(unsigned int encoded_op, u32 __user *uaddr)
+ {
+ int op = (encoded_op >> 28) & 7;
+ int cmp = (encoded_op >> 24) & 15;
+- int oparg = (encoded_op << 8) >> 20;
+- int cmparg = (encoded_op << 20) >> 20;
++ int oparg = (int)(encoded_op << 8) >> 20;
++ int cmparg = (int)(encoded_op << 20) >> 20;
+ int oldval = 0, ret, tmp;
+
+ if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
+- oparg = 1 << oparg;
++ oparg = 1U << (oparg & 0x1f);
+
+ if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ return -EFAULT;
+diff --git a/arch/frv/include/asm/timex.h b/arch/frv/include/asm/timex.h
+index a89bddefdacf..139093fab326 100644
+--- a/arch/frv/include/asm/timex.h
++++ b/arch/frv/include/asm/timex.h
+@@ -16,5 +16,11 @@ static inline cycles_t get_cycles(void)
+ #define vxtime_lock() do {} while (0)
+ #define vxtime_unlock() do {} while (0)
+
++/* This attribute is used in include/linux/jiffies.h alongside with
++ * __cacheline_aligned_in_smp. It is assumed that __cacheline_aligned_in_smp
++ * for frv does not contain another section specification.
++ */
++#define __jiffy_arch_data __attribute__((__section__(".data")))
++
+ #endif
+
+diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c
+index 29754aae5177..4268a78d8a5b 100644
+--- a/arch/ia64/kernel/module.c
++++ b/arch/ia64/kernel/module.c
+@@ -153,7 +153,7 @@ slot (const struct insn *insn)
+ static int
+ apply_imm64 (struct module *mod, struct insn *insn, uint64_t val)
+ {
+- if (slot(insn) != 2) {
++ if (slot(insn) != 1 && slot(insn) != 2) {
+ printk(KERN_ERR "%s: invalid slot number %d for IMM64\n",
+ mod->name, slot(insn));
+ return 0;
+@@ -165,7 +165,7 @@ apply_imm64 (struct module *mod, struct insn *insn, uint64_t val)
+ static int
+ apply_imm60 (struct module *mod, struct insn *insn, uint64_t val)
+ {
+- if (slot(insn) != 2) {
++ if (slot(insn) != 1 && slot(insn) != 2) {
+ printk(KERN_ERR "%s: invalid slot number %d for IMM60\n",
+ mod->name, slot(insn));
+ return 0;
+diff --git a/arch/mips/include/asm/kprobes.h b/arch/mips/include/asm/kprobes.h
+index daba1f9a4f79..174aedce3167 100644
+--- a/arch/mips/include/asm/kprobes.h
++++ b/arch/mips/include/asm/kprobes.h
+@@ -40,7 +40,8 @@ typedef union mips_instruction kprobe_opcode_t;
+
+ #define flush_insn_slot(p) \
+ do { \
+- flush_icache_range((unsigned long)p->addr, \
++ if (p->addr) \
++ flush_icache_range((unsigned long)p->addr, \
+ (unsigned long)p->addr + \
+ (MAX_INSN_SIZE * sizeof(kprobe_opcode_t))); \
+ } while (0)
+diff --git a/arch/mips/kernel/mips-r2-to-r6-emul.c b/arch/mips/kernel/mips-r2-to-r6-emul.c
+index d477508450de..805b71ed5129 100644
+--- a/arch/mips/kernel/mips-r2-to-r6-emul.c
++++ b/arch/mips/kernel/mips-r2-to-r6-emul.c
+@@ -1096,10 +1096,20 @@ repeat:
+ }
+ break;
+
+- case beql_op:
+- case bnel_op:
+ case blezl_op:
+ case bgtzl_op:
++ /*
++ * For BLEZL and BGTZL, rt field must be set to 0. If this
++ * is not the case, this may be an encoding of a MIPS R6
++ * instruction, so return to CPU execution if this occurs
++ */
++ if (MIPSInst_RT(inst)) {
++ err = SIGILL;
++ break;
++ }
++ /* fall through */
++ case beql_op:
++ case bnel_op:
+ if (delay_slot(regs)) {
+ err = SIGILL;
+ break;
+@@ -2329,6 +2339,8 @@ static int mipsr2_stats_clear_show(struct seq_file *s, void *unused)
+ __this_cpu_write((mipsr2bremustats).bgezl, 0);
+ __this_cpu_write((mipsr2bremustats).bltzll, 0);
+ __this_cpu_write((mipsr2bremustats).bgezll, 0);
++ __this_cpu_write((mipsr2bremustats).bltzall, 0);
++ __this_cpu_write((mipsr2bremustats).bgezall, 0);
+ __this_cpu_write((mipsr2bremustats).bltzal, 0);
+ __this_cpu_write((mipsr2bremustats).bgezal, 0);
+ __this_cpu_write((mipsr2bremustats).beql, 0);
+diff --git a/arch/mips/lib/memset.S b/arch/mips/lib/memset.S
+index b8e63fd00375..cda33475a481 100644
+--- a/arch/mips/lib/memset.S
++++ b/arch/mips/lib/memset.S
+@@ -218,7 +218,7 @@
+ 1: PTR_ADDIU a0, 1 /* fill bytewise */
+ R10KCBARRIER(0(ra))
+ bne t1, a0, 1b
+- sb a1, -1(a0)
++ EX(sb, a1, -1(a0), .Lsmall_fixup\@)
+
+ 2: jr ra /* done */
+ move a2, zero
+@@ -249,13 +249,18 @@
+ PTR_L t0, TI_TASK($28)
+ andi a2, STORMASK
+ LONG_L t0, THREAD_BUADDR(t0)
+- LONG_ADDU a2, t1
++ LONG_ADDU a2, a0
+ jr ra
+ LONG_SUBU a2, t0
+
+ .Llast_fixup\@:
+ jr ra
+- andi v1, a2, STORMASK
++ nop
++
++.Lsmall_fixup\@:
++ PTR_SUBU a2, t1, a0
++ jr ra
++ PTR_ADDIU a2, 1
+
+ .endm
+
+diff --git a/arch/mips/mm/pgtable-32.c b/arch/mips/mm/pgtable-32.c
+index adc6911ba748..b19a3c506b1e 100644
+--- a/arch/mips/mm/pgtable-32.c
++++ b/arch/mips/mm/pgtable-32.c
+@@ -51,15 +51,15 @@ void __init pagetable_init(void)
+ /*
+ * Fixed mappings:
+ */
+- vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
+- fixrange_init(vaddr, vaddr + FIXADDR_SIZE, pgd_base);
++ vaddr = __fix_to_virt(__end_of_fixed_addresses - 1);
++ fixrange_init(vaddr & PMD_MASK, vaddr + FIXADDR_SIZE, pgd_base);
+
+ #ifdef CONFIG_HIGHMEM
+ /*
+ * Permanent kmaps:
+ */
+ vaddr = PKMAP_BASE;
+- fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base);
++ fixrange_init(vaddr & PMD_MASK, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base);
+
+ pgd = swapper_pg_dir + __pgd_offset(vaddr);
+ pud = pud_offset(pgd, vaddr);
+diff --git a/arch/mips/net/bpf_jit.c b/arch/mips/net/bpf_jit.c
+index d6d27d51d131..5cf32b77f128 100644
+--- a/arch/mips/net/bpf_jit.c
++++ b/arch/mips/net/bpf_jit.c
+@@ -562,7 +562,8 @@ static void save_bpf_jit_regs(struct jit_ctx *ctx, unsigned offset)
+ u32 sflags, tmp_flags;
+
+ /* Adjust the stack pointer */
+- emit_stack_offset(-align_sp(offset), ctx);
++ if (offset)
++ emit_stack_offset(-align_sp(offset), ctx);
+
+ if (ctx->flags & SEEN_CALL) {
+ /* Argument save area */
+@@ -641,7 +642,8 @@ static void restore_bpf_jit_regs(struct jit_ctx *ctx,
+ emit_load_stack_reg(r_ra, r_sp, real_off, ctx);
+
+ /* Restore the sp and discard the scrach memory */
+- emit_stack_offset(align_sp(offset), ctx);
++ if (offset)
++ emit_stack_offset(align_sp(offset), ctx);
+ }
+
+ static unsigned int get_stack_depth(struct jit_ctx *ctx)
+@@ -685,8 +687,14 @@ static void build_prologue(struct jit_ctx *ctx)
+ if (ctx->flags & SEEN_X)
+ emit_jit_reg_move(r_X, r_zero, ctx);
+
+- /* Do not leak kernel data to userspace */
+- if (bpf_needs_clear_a(&ctx->skf->insns[0]))
++ /*
++ * Do not leak kernel data to userspace, we only need to clear
++ * r_A if it is ever used. In fact if it is never used, we
++ * will not save/restore it, so clearing it in this case would
++ * corrupt the state of the caller.
++ */
++ if (bpf_needs_clear_a(&ctx->skf->insns[0]) &&
++ (ctx->flags & SEEN_A))
+ emit_jit_reg_move(r_A, r_zero, ctx);
+ }
+
+diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
+index dba508fe1683..4f7060ec6875 100644
+--- a/arch/parisc/kernel/drivers.c
++++ b/arch/parisc/kernel/drivers.c
+@@ -648,6 +648,10 @@ static int match_pci_device(struct device *dev, int index,
+ (modpath->mod == PCI_FUNC(devfn)));
+ }
+
++ /* index might be out of bounds for bc[] */
++ if (index >= 6)
++ return 0;
++
+ id = PCI_SLOT(pdev->devfn) | (PCI_FUNC(pdev->devfn) << 5);
+ return (modpath->bc[index] == id);
+ }
+diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
+index a3bf5be111ff..bedaf3e3c558 100644
+--- a/arch/powerpc/include/asm/barrier.h
++++ b/arch/powerpc/include/asm/barrier.h
+@@ -36,7 +36,8 @@
+
+ #define set_mb(var, value) do { var = value; mb(); } while (0)
+
+-#ifdef __SUBARCH_HAS_LWSYNC
++/* The sub-arch has lwsync */
++#if defined(__powerpc64__) || defined(CONFIG_PPC_E500MC)
+ # define SMPWMB LWSYNC
+ #else
+ # define SMPWMB eieio
+diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
+index 042af1abfc4d..e1b164f4a8f0 100644
+--- a/arch/powerpc/include/asm/opal.h
++++ b/arch/powerpc/include/asm/opal.h
+@@ -21,6 +21,9 @@
+ /* We calculate number of sg entries based on PAGE_SIZE */
+ #define SG_ENTRIES_PER_NODE ((PAGE_SIZE - 16) / sizeof(struct opal_sg_entry))
+
++/* Default time to sleep or delay between OPAL_BUSY/OPAL_BUSY_EVENT loops */
++#define OPAL_BUSY_DELAY_MS 10
++
+ /* /sys/firmware/opal */
+ extern struct kobject *opal_kobj;
+
+diff --git a/arch/powerpc/include/asm/synch.h b/arch/powerpc/include/asm/synch.h
+index c50868681f9e..e8d6a842f4bb 100644
+--- a/arch/powerpc/include/asm/synch.h
++++ b/arch/powerpc/include/asm/synch.h
+@@ -5,10 +5,6 @@
+ #include <linux/stringify.h>
+ #include <asm/feature-fixups.h>
+
+-#if defined(__powerpc64__) || defined(CONFIG_PPC_E500MC)
+-#define __SUBARCH_HAS_LWSYNC
+-#endif
+-
+ #ifndef __ASSEMBLY__
+ extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup;
+ extern void do_lwsync_fixups(unsigned long value, void *fixup_start,
+diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
+index c3e0420b8a42..a9fec93c2144 100644
+--- a/arch/powerpc/kernel/eeh_pe.c
++++ b/arch/powerpc/kernel/eeh_pe.c
+@@ -766,7 +766,8 @@ static void eeh_restore_bridge_bars(struct eeh_dev *edev)
+ eeh_ops->write_config(pdn, 15*4, 4, edev->config_space[15]);
+
+ /* PCI Command: 0x4 */
+- eeh_ops->write_config(pdn, PCI_COMMAND, 4, edev->config_space[1]);
++ eeh_ops->write_config(pdn, PCI_COMMAND, 4, edev->config_space[1] |
++ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+
+ /* Check the PCIe link is ready */
+ eeh_bridge_check_link(edev);
+diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
+index 56f44848b044..4094e9013c18 100644
+--- a/arch/powerpc/kernel/time.c
++++ b/arch/powerpc/kernel/time.c
+@@ -685,12 +685,20 @@ static int __init get_freq(char *name, int cells, unsigned long *val)
+ static void start_cpu_decrementer(void)
+ {
+ #if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
++ unsigned int tcr;
++
+ /* Clear any pending timer interrupts */
+ mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);
+
+- /* Enable decrementer interrupt */
+- mtspr(SPRN_TCR, TCR_DIE);
+-#endif /* defined(CONFIG_BOOKE) || defined(CONFIG_40x) */
++ tcr = mfspr(SPRN_TCR);
++ /*
++ * The watchdog may have already been enabled by u-boot. So leave
++ * TRC[WP] (Watchdog Period) alone.
++ */
++ tcr &= TCR_WP_MASK; /* Clear all bits except for TCR[WP] */
++ tcr |= TCR_DIE; /* Enable decrementer */
++ mtspr(SPRN_TCR, tcr);
++#endif
+ }
+
+ void __init generic_calibrate_decr(void)
+diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c
+index b982d925c710..c74c9c4134b5 100644
+--- a/arch/powerpc/kvm/book3s_64_mmu_host.c
++++ b/arch/powerpc/kvm/book3s_64_mmu_host.c
+@@ -176,12 +176,15 @@ map_again:
+ ret = ppc_md.hpte_insert(hpteg, vpn, hpaddr, rflags, vflags,
+ hpsize, hpsize, MMU_SEGSIZE_256M);
+
+- if (ret < 0) {
++ if (ret == -1) {
+ /* If we couldn't map a primary PTE, try a secondary */
+ hash = ~hash;
+ vflags ^= HPTE_V_SECONDARY;
+ attempt++;
+ goto map_again;
++ } else if (ret < 0) {
++ r = -EIO;
++ goto out_unlock;
+ } else {
+ trace_kvm_book3s_64_mmu_map(rflags, hpteg,
+ vpn, hpaddr, orig_pte);
+diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
+index f57383941d03..7e66365cd0c9 100644
+--- a/arch/powerpc/kvm/book3s_pr.c
++++ b/arch/powerpc/kvm/book3s_pr.c
+@@ -625,7 +625,11 @@ int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu,
+ kvmppc_mmu_unmap_page(vcpu, &pte);
+ }
+ /* The guest's PTE is not mapped yet. Map on the host */
+- kvmppc_mmu_map_page(vcpu, &pte, iswrite);
++ if (kvmppc_mmu_map_page(vcpu, &pte, iswrite) == -EIO) {
++ /* Exit KVM if mapping failed */
++ run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
++ return RESUME_HOST;
++ }
+ if (data)
+ vcpu->stat.sp_storage++;
+ else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
+diff --git a/arch/powerpc/kvm/book3s_pr_papr.c b/arch/powerpc/kvm/book3s_pr_papr.c
+index f2c75a1e0536..0d91baf63fed 100644
+--- a/arch/powerpc/kvm/book3s_pr_papr.c
++++ b/arch/powerpc/kvm/book3s_pr_papr.c
+@@ -50,7 +50,9 @@ static int kvmppc_h_pr_enter(struct kvm_vcpu *vcpu)
+ pteg_addr = get_pteg_addr(vcpu, pte_index);
+
+ mutex_lock(&vcpu->kvm->arch.hpt_mutex);
+- copy_from_user(pteg, (void __user *)pteg_addr, sizeof(pteg));
++ ret = H_FUNCTION;
++ if (copy_from_user(pteg, (void __user *)pteg_addr, sizeof(pteg)))
++ goto done;
+ hpte = pteg;
+
+ ret = H_PTEG_FULL;
+@@ -71,7 +73,9 @@ static int kvmppc_h_pr_enter(struct kvm_vcpu *vcpu)
+ hpte[0] = cpu_to_be64(kvmppc_get_gpr(vcpu, 6));
+ hpte[1] = cpu_to_be64(kvmppc_get_gpr(vcpu, 7));
+ pteg_addr += i * HPTE_SIZE;
+- copy_to_user((void __user *)pteg_addr, hpte, HPTE_SIZE);
++ ret = H_FUNCTION;
++ if (copy_to_user((void __user *)pteg_addr, hpte, HPTE_SIZE))
++ goto done;
+ kvmppc_set_gpr(vcpu, 4, pte_index | i);
+ ret = H_SUCCESS;
+
+@@ -93,7 +97,9 @@ static int kvmppc_h_pr_remove(struct kvm_vcpu *vcpu)
+
+ pteg = get_pteg_addr(vcpu, pte_index);
+ mutex_lock(&vcpu->kvm->arch.hpt_mutex);
+- copy_from_user(pte, (void __user *)pteg, sizeof(pte));
++ ret = H_FUNCTION;
++ if (copy_from_user(pte, (void __user *)pteg, sizeof(pte)))
++ goto done;
+ pte[0] = be64_to_cpu((__force __be64)pte[0]);
+ pte[1] = be64_to_cpu((__force __be64)pte[1]);
+
+@@ -103,7 +109,9 @@ static int kvmppc_h_pr_remove(struct kvm_vcpu *vcpu)
+ ((flags & H_ANDCOND) && (pte[0] & avpn) != 0))
+ goto done;
+
+- copy_to_user((void __user *)pteg, &v, sizeof(v));
++ ret = H_FUNCTION;
++ if (copy_to_user((void __user *)pteg, &v, sizeof(v)))
++ goto done;
+
+ rb = compute_tlbie_rb(pte[0], pte[1], pte_index);
+ vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false);
+@@ -171,7 +179,10 @@ static int kvmppc_h_pr_bulk_remove(struct kvm_vcpu *vcpu)
+ }
+
+ pteg = get_pteg_addr(vcpu, tsh & H_BULK_REMOVE_PTEX);
+- copy_from_user(pte, (void __user *)pteg, sizeof(pte));
++ if (copy_from_user(pte, (void __user *)pteg, sizeof(pte))) {
++ ret = H_FUNCTION;
++ break;
++ }
+ pte[0] = be64_to_cpu((__force __be64)pte[0]);
+ pte[1] = be64_to_cpu((__force __be64)pte[1]);
+
+@@ -184,7 +195,10 @@ static int kvmppc_h_pr_bulk_remove(struct kvm_vcpu *vcpu)
+ tsh |= H_BULK_REMOVE_NOT_FOUND;
+ } else {
+ /* Splat the pteg in (userland) hpt */
+- copy_to_user((void __user *)pteg, &v, sizeof(v));
++ if (copy_to_user((void __user *)pteg, &v, sizeof(v))) {
++ ret = H_FUNCTION;
++ break;
++ }
+
+ rb = compute_tlbie_rb(pte[0], pte[1],
+ tsh & H_BULK_REMOVE_PTEX);
+@@ -211,7 +225,9 @@ static int kvmppc_h_pr_protect(struct kvm_vcpu *vcpu)
+
+ pteg = get_pteg_addr(vcpu, pte_index);
+ mutex_lock(&vcpu->kvm->arch.hpt_mutex);
+- copy_from_user(pte, (void __user *)pteg, sizeof(pte));
++ ret = H_FUNCTION;
++ if (copy_from_user(pte, (void __user *)pteg, sizeof(pte)))
++ goto done;
+ pte[0] = be64_to_cpu((__force __be64)pte[0]);
+ pte[1] = be64_to_cpu((__force __be64)pte[1]);
+
+@@ -234,7 +250,9 @@ static int kvmppc_h_pr_protect(struct kvm_vcpu *vcpu)
+ vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false);
+ pte[0] = (__force u64)cpu_to_be64(pte[0]);
+ pte[1] = (__force u64)cpu_to_be64(pte[1]);
+- copy_to_user((void __user *)pteg, pte, sizeof(pte));
++ ret = H_FUNCTION;
++ if (copy_to_user((void __user *)pteg, pte, sizeof(pte)))
++ goto done;
+ ret = H_SUCCESS;
+
+ done:
+diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
+index b396868d2aa7..f962209a6037 100644
+--- a/arch/powerpc/mm/fault.c
++++ b/arch/powerpc/mm/fault.c
+@@ -293,7 +293,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
+ * can result in fault, which will cause a deadlock when called with
+ * mmap_sem held
+ */
+- if (user_mode(regs))
++ if (!is_exec && user_mode(regs))
+ store_update_sp = store_updates_sp(regs);
+
+ if (user_mode(regs))
+diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c
+index be6212ddbf06..7e42e3ec2142 100644
+--- a/arch/powerpc/platforms/cell/spufs/coredump.c
++++ b/arch/powerpc/platforms/cell/spufs/coredump.c
+@@ -174,6 +174,8 @@ static int spufs_arch_write_note(struct spu_context *ctx, int i,
+ if (!dump_skip(cprm,
+ roundup(cprm->written - total + sz, 4) - cprm->written))
+ goto Eio;
++
++ rc = 0;
+ out:
+ free_page((unsigned long)buf);
+ return rc;
+diff --git a/arch/powerpc/platforms/powernv/opal-nvram.c b/arch/powerpc/platforms/powernv/opal-nvram.c
+index 9db4398ded5d..1bceb95f422d 100644
+--- a/arch/powerpc/platforms/powernv/opal-nvram.c
++++ b/arch/powerpc/platforms/powernv/opal-nvram.c
+@@ -11,6 +11,7 @@
+
+ #define DEBUG
+
++#include <linux/delay.h>
+ #include <linux/kernel.h>
+ #include <linux/init.h>
+ #include <linux/of.h>
+@@ -56,9 +57,17 @@ static ssize_t opal_nvram_write(char *buf, size_t count, loff_t *index)
+
+ while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
+ rc = opal_write_nvram(__pa(buf), count, off);
+- if (rc == OPAL_BUSY_EVENT)
++ if (rc == OPAL_BUSY_EVENT) {
++ msleep(OPAL_BUSY_DELAY_MS);
+ opal_poll_events(NULL);
++ } else if (rc == OPAL_BUSY) {
++ msleep(OPAL_BUSY_DELAY_MS);
++ }
+ }
++
++ if (rc)
++ return -EIO;
++
+ *index += count;
+ return count;
+ }
+diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
+index 2eeb0a0f506d..8e40530fd39c 100644
+--- a/arch/s390/hypfs/inode.c
++++ b/arch/s390/hypfs/inode.c
+@@ -323,7 +323,7 @@ static void hypfs_kill_super(struct super_block *sb)
+
+ if (sb->s_root)
+ hypfs_delete_tree(sb->s_root);
+- if (sb_info->update_file)
++ if (sb_info && sb_info->update_file)
+ hypfs_remove(sb_info->update_file);
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
+index 7963c6aa1196..09548603d782 100644
+--- a/arch/s390/kernel/ipl.c
++++ b/arch/s390/kernel/ipl.c
+@@ -770,6 +770,7 @@ static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
+ /* copy and convert to ebcdic */
+ memcpy(ipb->hdr.loadparm, buf, lp_len);
+ ASCEBC(ipb->hdr.loadparm, LOADPARM_LEN);
++ ipb->hdr.flags |= DIAG308_FLAGS_LP_VALID;
+ return len;
+ }
+
+diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
+index 445657fe658c..6c553f6e791a 100644
+--- a/arch/s390/kernel/vmlinux.lds.S
++++ b/arch/s390/kernel/vmlinux.lds.S
+@@ -21,8 +21,14 @@ SECTIONS
+ {
+ . = 0x00000000;
+ .text : {
+- _text = .; /* Text and read-only data */
++ /* Text and read-only data */
+ HEAD_TEXT
++ /*
++ * E.g. perf doesn't like symbols starting at address zero,
++ * therefore skip the initial PSW and channel program located
++ * at address zero and let _text start at 0x200.
++ */
++ _text = 0x200;
+ TEXT_TEXT
+ SCHED_TEXT
+ LOCK_TEXT
+diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
+index 7d3ca30fcd15..00e6b6c1dd79 100644
+--- a/arch/sparc/kernel/ldc.c
++++ b/arch/sparc/kernel/ldc.c
+@@ -1733,9 +1733,14 @@ static int read_nonraw(struct ldc_channel *lp, void *buf, unsigned int size)
+
+ lp->rcv_nxt = p->seqid;
+
++ /*
++ * If this is a control-only packet, there is nothing
++ * else to do but advance the rx queue since the packet
++ * was already processed above.
++ */
+ if (!(p->type & LDC_DATA)) {
+ new = rx_advance(lp, new);
+- goto no_data;
++ break;
+ }
+ if (p->stype & (LDC_ACK | LDC_NACK)) {
+ err = data_ack_nack(lp, p);
+diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
+index 7b605e4dfffa..2ac6a7e5a179 100644
+--- a/arch/um/os-Linux/signal.c
++++ b/arch/um/os-Linux/signal.c
+@@ -135,7 +135,7 @@ static void (*handlers[_NSIG])(int sig, struct siginfo *si, mcontext_t *mc) = {
+
+ static void hard_handler(int sig, siginfo_t *si, void *p)
+ {
+- struct ucontext *uc = p;
++ ucontext_t *uc = p;
+ mcontext_t *mc = &uc->uc_mcontext;
+ unsigned long pending = 1UL << sig;
+
+diff --git a/arch/x86/Makefile b/arch/x86/Makefile
+index 2fda005bb334..696c82f9035d 100644
+--- a/arch/x86/Makefile
++++ b/arch/x86/Makefile
+@@ -158,6 +158,15 @@ KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)
+
+ LDFLAGS := -m elf_$(UTS_MACHINE)
+
++#
++# The 64-bit kernel must be aligned to 2MB. Pass -z max-page-size=0x200000 to
++# the linker to force 2MB page size regardless of the default page size used
++# by the linker.
++#
++ifdef CONFIG_X86_64
++LDFLAGS += $(call ld-option, -z max-page-size=0x200000)
++endif
++
+ # Speed up the build
+ KBUILD_CFLAGS += -pipe
+ # Workaround for a gcc prelease that unfortunately was shipped in a suse release
+diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
+index e28437e0f708..fc48e8e11a95 100644
+--- a/arch/x86/boot/compressed/misc.c
++++ b/arch/x86/boot/compressed/misc.c
+@@ -349,6 +349,10 @@ static void parse_elf(void *output)
+
+ switch (phdr->p_type) {
+ case PT_LOAD:
++#ifdef CONFIG_X86_64
++ if ((phdr->p_align % 0x200000) != 0)
++ error("Alignment of LOAD segment isn't multiple of 2MB");
++#endif
+ #ifdef CONFIG_RELOCATABLE
+ dest = output;
+ dest += (phdr->p_paddr - LOAD_PHYSICAL_ADDR);
+diff --git a/arch/x86/crypto/cast5_avx_glue.c b/arch/x86/crypto/cast5_avx_glue.c
+index 236c80974457..75385fcf1074 100644
+--- a/arch/x86/crypto/cast5_avx_glue.c
++++ b/arch/x86/crypto/cast5_avx_glue.c
+@@ -67,8 +67,6 @@ static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk,
+ void (*fn)(struct cast5_ctx *ctx, u8 *dst, const u8 *src);
+ int err;
+
+- fn = (enc) ? cast5_ecb_enc_16way : cast5_ecb_dec_16way;
+-
+ err = blkcipher_walk_virt(desc, walk);
+ desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+
+@@ -80,6 +78,7 @@ static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk,
+
+ /* Process multi-block batch */
+ if (nbytes >= bsize * CAST5_PARALLEL_BLOCKS) {
++ fn = (enc) ? cast5_ecb_enc_16way : cast5_ecb_dec_16way;
+ do {
+ fn(ctx, wdst, wsrc);
+
+diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
+index da772edd19ab..b1965b6bbd68 100644
+--- a/arch/x86/include/asm/vmx.h
++++ b/arch/x86/include/asm/vmx.h
+@@ -306,6 +306,7 @@ enum vmcs_field {
+ #define INTR_TYPE_NMI_INTR (2 << 8) /* NMI */
+ #define INTR_TYPE_HARD_EXCEPTION (3 << 8) /* processor exception */
+ #define INTR_TYPE_SOFT_INTR (4 << 8) /* software interrupt */
++#define INTR_TYPE_PRIV_SW_EXCEPTION (5 << 8) /* ICE breakpoint - undocumented */
+ #define INTR_TYPE_SOFT_EXCEPTION (6 << 8) /* software exception */
+
+ /* GUEST_INTERRUPTIBILITY_INFO flags. */
+diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h
+index 06b407f79b24..da43f226e5a2 100644
+--- a/arch/x86/include/uapi/asm/msr-index.h
++++ b/arch/x86/include/uapi/asm/msr-index.h
+@@ -307,6 +307,9 @@
+ #define FAM10H_MMIO_CONF_BASE_MASK 0xfffffffULL
+ #define FAM10H_MMIO_CONF_BASE_SHIFT 20
+ #define MSR_FAM10H_NODE_ID 0xc001100c
++#define MSR_F10H_DECFG 0xc0011029
++#define MSR_F10H_DECFG_LFENCE_SERIALIZE_BIT 1
++#define MSR_F10H_DECFG_LFENCE_SERIALIZE BIT_ULL(MSR_F10H_DECFG_LFENCE_SERIALIZE_BIT)
+
+ /* K8 MSRs */
+ #define MSR_K8_TOP_MEM1 0xc001001a
+diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
+index c6c4248ab138..1d64ba0c9496 100644
+--- a/arch/x86/kernel/cpu/amd.c
++++ b/arch/x86/kernel/cpu/amd.c
+@@ -712,8 +712,32 @@ static void init_amd(struct cpuinfo_x86 *c)
+ set_cpu_cap(c, X86_FEATURE_K8);
+
+ if (cpu_has_xmm2) {
+- /* MFENCE stops RDTSC speculation */
+- set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC);
++ unsigned long long val;
++ int ret;
++
++ /*
++ * A serializing LFENCE has less overhead than MFENCE, so
++ * use it for execution serialization. On families which
++ * don't have that MSR, LFENCE is already serializing.
++ * msr_set_bit() uses the safe accessors, too, even if the MSR
++ * is not present.
++ */
++ msr_set_bit(MSR_F10H_DECFG,
++ MSR_F10H_DECFG_LFENCE_SERIALIZE_BIT);
++
++ /*
++ * Verify that the MSR write was successful (could be running
++ * under a hypervisor) and only then assume that LFENCE is
++ * serializing.
++ */
++ ret = rdmsrl_safe(MSR_F10H_DECFG, &val);
++ if (!ret && (val & MSR_F10H_DECFG_LFENCE_SERIALIZE)) {
++ /* A serializing LFENCE stops RDTSC speculation */
++ set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
++ } else {
++ /* MFENCE stops RDTSC speculation */
++ set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC);
++ }
+ }
+
+ /*
+diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
+index 185ebd2c0c3c..5d77df85c529 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel.c
++++ b/arch/x86/kernel/cpu/perf_event_intel.c
+@@ -2493,7 +2493,7 @@ static unsigned bdw_limit_period(struct perf_event *event, unsigned left)
+ X86_CONFIG(.event=0xc0, .umask=0x01)) {
+ if (left < 128)
+ left = 128;
+- left &= ~0x3fu;
++ left &= ~0x3fULL;
+ }
+ return left;
+ }
+diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c
+index e7cc5370cd2f..6c7e7986939a 100644
+--- a/arch/x86/kernel/i8259.c
++++ b/arch/x86/kernel/i8259.c
+@@ -405,6 +405,7 @@ struct legacy_pic default_legacy_pic = {
+ };
+
+ struct legacy_pic *legacy_pic = &default_legacy_pic;
++EXPORT_SYMBOL(legacy_pic);
+
+ static int __init i8259A_init_ops(void)
+ {
+diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
+index 228c233a2f36..106d4ac16a43 100644
+--- a/arch/x86/kernel/kprobes/core.c
++++ b/arch/x86/kernel/kprobes/core.c
+@@ -49,6 +49,7 @@
+ #include <linux/kdebug.h>
+ #include <linux/kallsyms.h>
+ #include <linux/ftrace.h>
++#include <linux/moduleloader.h>
+
+ #include <asm/cacheflush.h>
+ #include <asm/desc.h>
+@@ -196,6 +197,8 @@ retry:
+ return (opcode != 0x62 && opcode != 0x67);
+ case 0x70:
+ return 0; /* can't boost conditional jump */
++ case 0x90:
++ return opcode != 0x9a; /* can't boost call far */
+ case 0xc0:
+ /* can't boost software-interruptions */
+ return (0xc1 < opcode && opcode < 0xcc) || opcode == 0xcf;
+@@ -400,10 +403,20 @@ int __copy_instruction(u8 *dest, u8 *src)
+ return length;
+ }
+
++/* Recover page to RW mode before releasing it */
++void free_insn_page(void *page)
++{
++ set_memory_nx((unsigned long)page & PAGE_MASK, 1);
++ set_memory_rw((unsigned long)page & PAGE_MASK, 1);
++ module_memfree(page);
++}
++
+ static int arch_copy_kprobe(struct kprobe *p)
+ {
+ int ret;
+
++ set_memory_rw((unsigned long)p->ainsn.insn & PAGE_MASK, 1);
++
+ /* Copy an instruction with recovering if other optprobe modifies it.*/
+ ret = __copy_instruction(p->ainsn.insn, p->addr);
+ if (!ret)
+@@ -418,6 +431,8 @@ static int arch_copy_kprobe(struct kprobe *p)
+ else
+ p->ainsn.boostable = -1;
+
++ set_memory_ro((unsigned long)p->ainsn.insn & PAGE_MASK, 1);
++
+ /* Check whether the instruction modifies Interrupt Flag or not */
+ p->ainsn.if_modifier = is_IF_modifier(p->ainsn.insn);
+
+diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c
+index c9d488f3e4cd..085415d88326 100644
+--- a/arch/x86/kernel/kprobes/opt.c
++++ b/arch/x86/kernel/kprobes/opt.c
+@@ -349,6 +349,7 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op,
+ }
+
+ buf = (u8 *)op->optinsn.insn;
++ set_memory_rw((unsigned long)buf & PAGE_MASK, 1);
+
+ /* Copy instructions into the out-of-line buffer */
+ ret = copy_optimized_instructions(buf + TMPL_END_IDX, op->kp.addr);
+@@ -371,6 +372,8 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op,
+ synthesize_reljump(buf + TMPL_END_IDX + op->optinsn.size,
+ (u8 *)op->kp.addr + op->optinsn.size);
+
++ set_memory_ro((unsigned long)buf & PAGE_MASK, 1);
++
+ flush_icache_range((unsigned long) buf,
+ (unsigned long) buf + TMPL_END_IDX +
+ op->optinsn.size + RELATIVEJUMP_SIZE);
+diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
+index f6911cc90a81..a92919864e04 100644
+--- a/arch/x86/kernel/smpboot.c
++++ b/arch/x86/kernel/smpboot.c
+@@ -1400,6 +1400,8 @@ static inline void mwait_play_dead(void)
+ void *mwait_ptr;
+ int i;
+
++ if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
++ return;
+ if (!this_cpu_has(X86_FEATURE_MWAIT))
+ return;
+ if (!this_cpu_has(X86_FEATURE_CLFLUSH))
+diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
+index 21187ebee7d0..8fdcdbf5f309 100644
+--- a/arch/x86/kernel/tsc.c
++++ b/arch/x86/kernel/tsc.c
+@@ -356,6 +356,8 @@ static int __init tsc_setup(char *str)
+ tsc_clocksource_reliable = 1;
+ if (!strncmp(str, "noirqtime", 9))
+ no_sched_irq_time = 1;
++ if (!strcmp(str, "unstable"))
++ mark_tsc_unstable("boot parameter");
+ return 1;
+ }
+
+@@ -397,7 +399,7 @@ static unsigned long calc_hpet_ref(u64 deltatsc, u64 hpet1, u64 hpet2)
+ hpet2 -= hpet1;
+ tmp = ((u64)hpet2 * hpet_readl(HPET_PERIOD));
+ do_div(tmp, 1000000);
+- do_div(deltatsc, tmp);
++ deltatsc = div64_u64(deltatsc, tmp);
+
+ return (unsigned long) deltatsc;
+ }
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 6b87d8bcdcdd..28d48339af32 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -1470,6 +1470,7 @@ static void svm_get_segment(struct kvm_vcpu *vcpu,
+ */
+ if (var->unusable)
+ var->db = 0;
++ /* This is symmetric with svm_set_segment() */
+ var->dpl = to_svm(vcpu)->vmcb->save.cpl;
+ break;
+ }
+@@ -1614,18 +1615,14 @@ static void svm_set_segment(struct kvm_vcpu *vcpu,
+ s->base = var->base;
+ s->limit = var->limit;
+ s->selector = var->selector;
+- if (var->unusable)
+- s->attrib = 0;
+- else {
+- s->attrib = (var->type & SVM_SELECTOR_TYPE_MASK);
+- s->attrib |= (var->s & 1) << SVM_SELECTOR_S_SHIFT;
+- s->attrib |= (var->dpl & 3) << SVM_SELECTOR_DPL_SHIFT;
+- s->attrib |= (var->present & 1) << SVM_SELECTOR_P_SHIFT;
+- s->attrib |= (var->avl & 1) << SVM_SELECTOR_AVL_SHIFT;
+- s->attrib |= (var->l & 1) << SVM_SELECTOR_L_SHIFT;
+- s->attrib |= (var->db & 1) << SVM_SELECTOR_DB_SHIFT;
+- s->attrib |= (var->g & 1) << SVM_SELECTOR_G_SHIFT;
+- }
++ s->attrib = (var->type & SVM_SELECTOR_TYPE_MASK);
++ s->attrib |= (var->s & 1) << SVM_SELECTOR_S_SHIFT;
++ s->attrib |= (var->dpl & 3) << SVM_SELECTOR_DPL_SHIFT;
++ s->attrib |= ((var->present & 1) && !var->unusable) << SVM_SELECTOR_P_SHIFT;
++ s->attrib |= (var->avl & 1) << SVM_SELECTOR_AVL_SHIFT;
++ s->attrib |= (var->l & 1) << SVM_SELECTOR_L_SHIFT;
++ s->attrib |= (var->db & 1) << SVM_SELECTOR_DB_SHIFT;
++ s->attrib |= (var->g & 1) << SVM_SELECTOR_G_SHIFT;
+
+ /*
+ * This is always accurate, except if SYSRET returned to a segment
+@@ -1634,7 +1631,8 @@ static void svm_set_segment(struct kvm_vcpu *vcpu,
+ * would entail passing the CPL to userspace and back.
+ */
+ if (seg == VCPU_SREG_SS)
+- svm->vmcb->save.cpl = (s->attrib >> SVM_SELECTOR_DPL_SHIFT) & 3;
++ /* This is symmetric with svm_get_segment() */
++ svm->vmcb->save.cpl = (var->dpl & 3);
+
+ mark_dirty(svm->vmcb, VMCB_SEG);
+ }
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index ffd5502dd215..67f2d8e44fda 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -942,6 +942,13 @@ static inline bool is_machine_check(u32 intr_info)
+ (INTR_TYPE_HARD_EXCEPTION | MC_VECTOR | INTR_INFO_VALID_MASK);
+ }
+
++/* Undocumented: icebp/int1 */
++static inline bool is_icebp(u32 intr_info)
++{
++ return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK))
++ == (INTR_TYPE_PRIV_SW_EXCEPTION | INTR_INFO_VALID_MASK);
++}
++
+ static inline bool cpu_has_vmx_msr_bitmap(void)
+ {
+ return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_USE_MSR_BITMAPS;
+@@ -5151,7 +5158,7 @@ static int handle_exception(struct kvm_vcpu *vcpu)
+ (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))) {
+ vcpu->arch.dr6 &= ~15;
+ vcpu->arch.dr6 |= dr6 | DR6_RTM;
+- if (!(dr6 & ~DR6_RESERVED)) /* icebp */
++ if (is_icebp(intr_info))
+ skip_emulated_instruction(vcpu);
+
+ kvm_queue_exception(vcpu, DB_VECTOR);
+@@ -7417,11 +7424,13 @@ static bool nested_vmx_exit_handled_cr(struct kvm_vcpu *vcpu,
+ {
+ unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+ int cr = exit_qualification & 15;
+- int reg = (exit_qualification >> 8) & 15;
+- unsigned long val = kvm_register_readl(vcpu, reg);
++ int reg;
++ unsigned long val;
+
+ switch ((exit_qualification >> 4) & 3) {
+ case 0: /* mov to cr */
++ reg = (exit_qualification >> 8) & 15;
++ val = kvm_register_readl(vcpu, reg);
+ switch (cr) {
+ case 0:
+ if (vmcs12->cr0_guest_host_mask &
+@@ -7476,6 +7485,7 @@ static bool nested_vmx_exit_handled_cr(struct kvm_vcpu *vcpu,
+ * lmsw can change bits 1..3 of cr0, and only set bit 0 of
+ * cr0. Other attempted changes are ignored, with no exit.
+ */
++ val = (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f;
+ if (vmcs12->cr0_guest_host_mask & 0xe &
+ (val ^ vmcs12->cr0_read_shadow))
+ return true;
+diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
+index 27bc31f0da52..f6ca8a0d14ee 100644
+--- a/arch/x86/mm/fault.c
++++ b/arch/x86/mm/fault.c
+@@ -285,7 +285,7 @@ static noinline int vmalloc_fault(unsigned long address)
+ if (!pmd_k)
+ return -1;
+
+- if (pmd_huge(*pmd_k))
++ if (pmd_large(*pmd_k))
+ return 0;
+
+ pte_k = pte_offset_kernel(pmd_k, address);
+@@ -403,7 +403,7 @@ static noinline int vmalloc_fault(unsigned long address)
+ if (pud_none(*pud) || pud_pfn(*pud) != pud_pfn(*pud_ref))
+ BUG();
+
+- if (pud_huge(*pud))
++ if (pud_large(*pud))
+ return 0;
+
+ pmd = pmd_offset(pud, address);
+@@ -414,7 +414,7 @@ static noinline int vmalloc_fault(unsigned long address)
+ if (pmd_none(*pmd) || pmd_pfn(*pmd) != pmd_pfn(*pmd_ref))
+ BUG();
+
+- if (pmd_huge(*pmd))
++ if (pmd_large(*pmd))
+ return 0;
+
+ pte_ref = pte_offset_kernel(pmd_ref, address);
+diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
+index ddeff4844a10..31657a66e3fd 100644
+--- a/arch/x86/net/bpf_jit_comp.c
++++ b/arch/x86/net/bpf_jit_comp.c
+@@ -971,7 +971,7 @@ void bpf_int_jit_compile(struct bpf_prog *prog)
+ * may converge on the last pass. In such case do one more
+ * pass to emit the final image
+ */
+- for (pass = 0; pass < 10 || image; pass++) {
++ for (pass = 0; pass < 20 || image; pass++) {
+ proglen = do_jit(prog, addrs, image, oldproglen, &ctx);
+ if (proglen <= 0) {
+ image = NULL;
+@@ -994,6 +994,7 @@ void bpf_int_jit_compile(struct bpf_prog *prog)
+ goto out;
+ }
+ oldproglen = proglen;
++ cond_resched();
+ }
+
+ if (bpf_jit_enable > 1)
+diff --git a/arch/x86/um/stub_segv.c b/arch/x86/um/stub_segv.c
+index 1518d2805ae8..fd6825537b97 100644
+--- a/arch/x86/um/stub_segv.c
++++ b/arch/x86/um/stub_segv.c
+@@ -10,7 +10,7 @@
+ void __attribute__ ((__section__ (".__syscall_stub")))
+ stub_segv_handler(int sig, siginfo_t *info, void *p)
+ {
+- struct ucontext *uc = p;
++ ucontext_t *uc = p;
+
+ GET_FAULTINFO_FROM_MC(*((struct faultinfo *) STUB_DATA),
+ &uc->uc_mcontext);
+diff --git a/block/bio-integrity.c b/block/bio-integrity.c
+index 39ce74d10e2b..21978fcd877a 100644
+--- a/block/bio-integrity.c
++++ b/block/bio-integrity.c
+@@ -165,6 +165,9 @@ bool bio_integrity_enabled(struct bio *bio)
+ if (!bio_is_rw(bio))
+ return false;
+
++ if (!bio_sectors(bio))
++ return false;
++
+ /* Already protected? */
+ if (bio_integrity(bio))
+ return false;
+diff --git a/block/blk-mq.c b/block/blk-mq.c
+index 2dc1fd6c5bdb..0145b2ceafae 100644
+--- a/block/blk-mq.c
++++ b/block/blk-mq.c
+@@ -1607,7 +1607,8 @@ static void blk_mq_exit_hctx(struct request_queue *q,
+ {
+ unsigned flush_start_tag = set->queue_depth;
+
+- blk_mq_tag_idle(hctx);
++ if (blk_mq_hw_queue_mapped(hctx))
++ blk_mq_tag_idle(hctx);
+
+ if (set->ops->exit_request)
+ set->ops->exit_request(set->driver_data,
+diff --git a/block/blk-throttle.c b/block/blk-throttle.c
+index 5b9c6d5c3636..fd51c8be247d 100644
+--- a/block/blk-throttle.c
++++ b/block/blk-throttle.c
+@@ -648,6 +648,17 @@ static void throtl_dequeue_tg(struct throtl_grp *tg)
+ static void throtl_schedule_pending_timer(struct throtl_service_queue *sq,
+ unsigned long expires)
+ {
++ unsigned long max_expire = jiffies + 8 * throtl_slice;
++
++ /*
++ * Since we are adjusting the throttle limit dynamically, the sleep
++ * time calculated according to previous limit might be invalid. It's
++ * possible the cgroup sleep time is very long and no other cgroups
++ * have IO running so notify the limit changes. Make sure the cgroup
++ * doesn't sleep too long to avoid the missed notification.
++ */
++ if (time_after(expires, max_expire))
++ expires = max_expire;
+ mod_timer(&sq->pending_timer, expires);
+ throtl_log(sq, "schedule timer. delay=%lu jiffies=%lu",
+ expires - jiffies, jiffies);
+diff --git a/block/partition-generic.c b/block/partition-generic.c
+index 0d9e5f97f0a8..94de2055365e 100644
+--- a/block/partition-generic.c
++++ b/block/partition-generic.c
+@@ -309,8 +309,10 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
+
+ if (info) {
+ struct partition_meta_info *pinfo = alloc_part_info(disk);
+- if (!pinfo)
++ if (!pinfo) {
++ err = -ENOMEM;
+ goto out_free_stats;
++ }
+ memcpy(pinfo, info, sizeof(*info));
+ p->info = pinfo;
+ }
+diff --git a/block/partitions/msdos.c b/block/partitions/msdos.c
+index 5610cd537da7..7d8d50c11ce7 100644
+--- a/block/partitions/msdos.c
++++ b/block/partitions/msdos.c
+@@ -300,7 +300,9 @@ static void parse_bsd(struct parsed_partitions *state,
+ continue;
+ bsd_start = le32_to_cpu(p->p_offset);
+ bsd_size = le32_to_cpu(p->p_size);
+- if (memcmp(flavour, "bsd\0", 4) == 0)
++ /* FreeBSD has relative offset if C partition offset is zero */
++ if (memcmp(flavour, "bsd\0", 4) == 0 &&
++ le32_to_cpu(l->d_partitions[2].p_offset) == 0)
+ bsd_start += offset;
+ if (offset == bsd_start && size == bsd_size)
+ /* full parent partition, we have it already */
+diff --git a/crypto/ahash.c b/crypto/ahash.c
+index 7006dbfd39bd..6978ad86e516 100644
+--- a/crypto/ahash.c
++++ b/crypto/ahash.c
+@@ -91,13 +91,14 @@ int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err)
+
+ if (nbytes && walk->offset & alignmask && !err) {
+ walk->offset = ALIGN(walk->offset, alignmask + 1);
+- walk->data += walk->offset;
+-
+ nbytes = min(nbytes,
+ ((unsigned int)(PAGE_SIZE)) - walk->offset);
+ walk->entrylen -= nbytes;
+
+- return nbytes;
++ if (nbytes) {
++ walk->data += walk->offset;
++ return nbytes;
++ }
+ }
+
+ if (walk->flags & CRYPTO_ALG_ASYNC)
+diff --git a/crypto/async_tx/async_pq.c b/crypto/async_tx/async_pq.c
+index 5d355e0c2633..f3c4f0cd62dd 100644
+--- a/crypto/async_tx/async_pq.c
++++ b/crypto/async_tx/async_pq.c
+@@ -62,9 +62,6 @@ do_async_gen_syndrome(struct dma_chan *chan,
+ dma_addr_t dma_dest[2];
+ int src_off = 0;
+
+- if (submit->flags & ASYNC_TX_FENCE)
+- dma_flags |= DMA_PREP_FENCE;
+-
+ while (src_cnt > 0) {
+ submit->flags = flags_orig;
+ pq_src_cnt = min(src_cnt, dma_maxpq(dma, dma_flags));
+@@ -83,6 +80,8 @@ do_async_gen_syndrome(struct dma_chan *chan,
+ if (cb_fn_orig)
+ dma_flags |= DMA_PREP_INTERRUPT;
+ }
++ if (submit->flags & ASYNC_TX_FENCE)
++ dma_flags |= DMA_PREP_FENCE;
+
+ /* Drivers force forward progress in case they can not provide
+ * a descriptor
+diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
+index faad911d46b5..fe425951b2d1 100644
+--- a/drivers/acpi/acpica/evxfevnt.c
++++ b/drivers/acpi/acpica/evxfevnt.c
+@@ -180,6 +180,12 @@ acpi_status acpi_enable_event(u32 event, u32 flags)
+
+ ACPI_FUNCTION_TRACE(acpi_enable_event);
+
++ /* If Hardware Reduced flag is set, there are no fixed events */
++
++ if (acpi_gbl_reduced_hardware) {
++ return_ACPI_STATUS(AE_OK);
++ }
++
+ /* Decode the Fixed Event */
+
+ if (event > ACPI_EVENT_MAX) {
+@@ -237,6 +243,12 @@ acpi_status acpi_disable_event(u32 event, u32 flags)
+
+ ACPI_FUNCTION_TRACE(acpi_disable_event);
+
++ /* If Hardware Reduced flag is set, there are no fixed events */
++
++ if (acpi_gbl_reduced_hardware) {
++ return_ACPI_STATUS(AE_OK);
++ }
++
+ /* Decode the Fixed Event */
+
+ if (event > ACPI_EVENT_MAX) {
+@@ -290,6 +302,12 @@ acpi_status acpi_clear_event(u32 event)
+
+ ACPI_FUNCTION_TRACE(acpi_clear_event);
+
++ /* If Hardware Reduced flag is set, there are no fixed events */
++
++ if (acpi_gbl_reduced_hardware) {
++ return_ACPI_STATUS(AE_OK);
++ }
++
+ /* Decode the Fixed Event */
+
+ if (event > ACPI_EVENT_MAX) {
+diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c
+index 2f5ddd806c58..7a09290628ec 100644
+--- a/drivers/acpi/acpica/psobject.c
++++ b/drivers/acpi/acpica/psobject.c
+@@ -118,6 +118,9 @@ static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
+ (u32)(walk_state->aml_offset +
+ sizeof(struct acpi_table_header)));
+
++ ACPI_ERROR((AE_INFO,
++ "Aborting disassembly, AML byte code is corrupt"));
++
+ /* Dump the context surrounding the invalid opcode */
+
+ acpi_ut_dump_buffer(((u8 *)walk_state->parser_state.
+@@ -126,6 +129,14 @@ static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
+ sizeof(struct acpi_table_header) -
+ 16));
+ acpi_os_printf(" */\n");
++
++ /*
++ * Just abort the disassembly, cannot continue because the
++ * parser is essentially lost. The disassembler can then
++ * randomly fail because an ill-constructed parse tree
++ * can result.
++ */
++ return_ACPI_STATUS(AE_AML_BAD_OPCODE);
+ #endif
+ }
+
+@@ -290,6 +301,9 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state,
+ if (status == AE_CTRL_PARSE_CONTINUE) {
+ return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
+ }
++ if (ACPI_FAILURE(status)) {
++ return_ACPI_STATUS(status);
++ }
+
+ /* Create Op structure and append to parent's argument list */
+
+diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
+index b1def411c0b8..7249ba6b511f 100644
+--- a/drivers/acpi/pci_irq.c
++++ b/drivers/acpi/pci_irq.c
+@@ -136,9 +136,6 @@ static void do_prt_fixups(struct acpi_prt_entry *entry,
+ quirk = &prt_quirks[i];
+
+ /* All current quirks involve link devices, not GSIs */
+- if (!prt->source)
+- continue;
+-
+ if (dmi_check_system(quirk->system) &&
+ entry->id.segment == quirk->segment &&
+ entry->id.bus == quirk->bus &&
+diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c
+index 6a082d4de12c..24a793957bc0 100644
+--- a/drivers/acpi/pmic/intel_pmic_xpower.c
++++ b/drivers/acpi/pmic/intel_pmic_xpower.c
+@@ -28,97 +28,97 @@ static struct pmic_table power_table[] = {
+ .address = 0x00,
+ .reg = 0x13,
+ .bit = 0x05,
+- },
++ }, /* ALD1 */
+ {
+ .address = 0x04,
+ .reg = 0x13,
+ .bit = 0x06,
+- },
++ }, /* ALD2 */
+ {
+ .address = 0x08,
+ .reg = 0x13,
+ .bit = 0x07,
+- },
++ }, /* ALD3 */
+ {
+ .address = 0x0c,
+ .reg = 0x12,
+ .bit = 0x03,
+- },
++ }, /* DLD1 */
+ {
+ .address = 0x10,
+ .reg = 0x12,
+ .bit = 0x04,
+- },
++ }, /* DLD2 */
+ {
+ .address = 0x14,
+ .reg = 0x12,
+ .bit = 0x05,
+- },
++ }, /* DLD3 */
+ {
+ .address = 0x18,
+ .reg = 0x12,
+ .bit = 0x06,
+- },
++ }, /* DLD4 */
+ {
+ .address = 0x1c,
+ .reg = 0x12,
+ .bit = 0x00,
+- },
++ }, /* ELD1 */
+ {
+ .address = 0x20,
+ .reg = 0x12,
+ .bit = 0x01,
+- },
++ }, /* ELD2 */
+ {
+ .address = 0x24,
+ .reg = 0x12,
+ .bit = 0x02,
+- },
++ }, /* ELD3 */
+ {
+ .address = 0x28,
+ .reg = 0x13,
+ .bit = 0x02,
+- },
++ }, /* FLD1 */
+ {
+ .address = 0x2c,
+ .reg = 0x13,
+ .bit = 0x03,
+- },
++ }, /* FLD2 */
+ {
+ .address = 0x30,
+ .reg = 0x13,
+ .bit = 0x04,
+- },
++ }, /* FLD3 */
+ {
+- .address = 0x38,
++ .address = 0x34,
+ .reg = 0x10,
+ .bit = 0x03,
+- },
++ }, /* BUC1 */
+ {
+- .address = 0x3c,
++ .address = 0x38,
+ .reg = 0x10,
+ .bit = 0x06,
+- },
++ }, /* BUC2 */
+ {
+- .address = 0x40,
++ .address = 0x3c,
+ .reg = 0x10,
+ .bit = 0x05,
+- },
++ }, /* BUC3 */
+ {
+- .address = 0x44,
++ .address = 0x40,
+ .reg = 0x10,
+ .bit = 0x04,
+- },
++ }, /* BUC4 */
+ {
+- .address = 0x48,
++ .address = 0x44,
+ .reg = 0x10,
+ .bit = 0x01,
+- },
++ }, /* BUC5 */
+ {
+- .address = 0x4c,
++ .address = 0x48,
+ .reg = 0x10,
+ .bit = 0x00
+- },
++ }, /* BUC6 */
+ };
+
+ /* TMP0 - TMP5 are the same, all from GPADC */
+diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
+index d9f71581b79b..bdc3063f694d 100644
+--- a/drivers/acpi/processor_driver.c
++++ b/drivers/acpi/processor_driver.c
+@@ -231,11 +231,16 @@ static int __acpi_processor_start(struct acpi_device *device)
+ static int acpi_processor_start(struct device *dev)
+ {
+ struct acpi_device *device = ACPI_COMPANION(dev);
++ int ret;
+
+ if (!device)
+ return -ENODEV;
+
+- return __acpi_processor_start(device);
++ /* Protect against concurrent CPU hotplug operations */
++ get_online_cpus();
++ ret = __acpi_processor_start(device);
++ put_online_cpus();
++ return ret;
+ }
+
+ static int acpi_processor_stop(struct device *dev)
+diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
+index f3df4b5e5fc9..cd7398b7aa67 100644
+--- a/drivers/acpi/processor_throttling.c
++++ b/drivers/acpi/processor_throttling.c
+@@ -66,8 +66,8 @@ struct acpi_processor_throttling_arg {
+ #define THROTTLING_POSTCHANGE (2)
+
+ static int acpi_processor_get_throttling(struct acpi_processor *pr);
+-int acpi_processor_set_throttling(struct acpi_processor *pr,
+- int state, bool force);
++static int __acpi_processor_set_throttling(struct acpi_processor *pr,
++ int state, bool force, bool direct);
+
+ static int acpi_processor_update_tsd_coord(void)
+ {
+@@ -895,7 +895,8 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Invalid throttling state, reset\n"));
+ state = 0;
+- ret = acpi_processor_set_throttling(pr, state, true);
++ ret = __acpi_processor_set_throttling(pr, state, true,
++ true);
+ if (ret)
+ return ret;
+ }
+@@ -905,36 +906,31 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr)
+ return 0;
+ }
+
+-static int acpi_processor_get_throttling(struct acpi_processor *pr)
++static long __acpi_processor_get_throttling(void *data)
+ {
+- cpumask_var_t saved_mask;
+- int ret;
++ struct acpi_processor *pr = data;
++
++ return pr->throttling.acpi_processor_get_throttling(pr);
++}
+
++static int acpi_processor_get_throttling(struct acpi_processor *pr)
++{
+ if (!pr)
+ return -EINVAL;
+
+ if (!pr->flags.throttling)
+ return -ENODEV;
+
+- if (!alloc_cpumask_var(&saved_mask, GFP_KERNEL))
+- return -ENOMEM;
+-
+ /*
+- * Migrate task to the cpu pointed by pr.
++ * This is either called from the CPU hotplug callback of
++ * processor_driver or via the ACPI probe function. In the latter
++ * case the CPU is not guaranteed to be online. Both call sites are
++ * protected against CPU hotplug.
+ */
+- cpumask_copy(saved_mask, ¤t->cpus_allowed);
+- /* FIXME: use work_on_cpu() */
+- if (set_cpus_allowed_ptr(current, cpumask_of(pr->id))) {
+- /* Can't migrate to the target pr->id CPU. Exit */
+- free_cpumask_var(saved_mask);
++ if (!cpu_online(pr->id))
+ return -ENODEV;
+- }
+- ret = pr->throttling.acpi_processor_get_throttling(pr);
+- /* restore the previous state */
+- set_cpus_allowed_ptr(current, saved_mask);
+- free_cpumask_var(saved_mask);
+
+- return ret;
++ return work_on_cpu(pr->id, __acpi_processor_get_throttling, pr);
+ }
+
+ static int acpi_processor_get_fadt_info(struct acpi_processor *pr)
+@@ -1084,8 +1080,15 @@ static long acpi_processor_throttling_fn(void *data)
+ arg->target_state, arg->force);
+ }
+
+-int acpi_processor_set_throttling(struct acpi_processor *pr,
+- int state, bool force)
++static int call_on_cpu(int cpu, long (*fn)(void *), void *arg, bool direct)
++{
++ if (direct)
++ return fn(arg);
++ return work_on_cpu(cpu, fn, arg);
++}
++
++static int __acpi_processor_set_throttling(struct acpi_processor *pr,
++ int state, bool force, bool direct)
+ {
+ int ret = 0;
+ unsigned int i;
+@@ -1134,7 +1137,8 @@ int acpi_processor_set_throttling(struct acpi_processor *pr,
+ arg.pr = pr;
+ arg.target_state = state;
+ arg.force = force;
+- ret = work_on_cpu(pr->id, acpi_processor_throttling_fn, &arg);
++ ret = call_on_cpu(pr->id, acpi_processor_throttling_fn, &arg,
++ direct);
+ } else {
+ /*
+ * When the T-state coordination is SW_ALL or HW_ALL,
+@@ -1167,8 +1171,8 @@ int acpi_processor_set_throttling(struct acpi_processor *pr,
+ arg.pr = match_pr;
+ arg.target_state = state;
+ arg.force = force;
+- ret = work_on_cpu(pr->id, acpi_processor_throttling_fn,
+- &arg);
++ ret = call_on_cpu(pr->id, acpi_processor_throttling_fn,
++ &arg, direct);
+ }
+ }
+ /*
+@@ -1186,6 +1190,12 @@ int acpi_processor_set_throttling(struct acpi_processor *pr,
+ return ret;
+ }
+
++int acpi_processor_set_throttling(struct acpi_processor *pr, int state,
++ bool force)
++{
++ return __acpi_processor_set_throttling(pr, state, force, false);
++}
++
+ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
+ {
+ int result = 0;
+diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
+index f0099360039e..1accc01fb0ca 100644
+--- a/drivers/amba/bus.c
++++ b/drivers/amba/bus.c
+@@ -68,11 +68,12 @@ static ssize_t driver_override_show(struct device *_dev,
+ struct device_attribute *attr, char *buf)
+ {
+ struct amba_device *dev = to_amba_device(_dev);
++ ssize_t len;
+
+- if (!dev->driver_override)
+- return 0;
+-
+- return sprintf(buf, "%s\n", dev->driver_override);
++ device_lock(_dev);
++ len = sprintf(buf, "%s\n", dev->driver_override);
++ device_unlock(_dev);
++ return len;
+ }
+
+ static ssize_t driver_override_store(struct device *_dev,
+@@ -80,9 +81,10 @@ static ssize_t driver_override_store(struct device *_dev,
+ const char *buf, size_t count)
+ {
+ struct amba_device *dev = to_amba_device(_dev);
+- char *driver_override, *old = dev->driver_override, *cp;
++ char *driver_override, *old, *cp;
+
+- if (count > PATH_MAX)
++ /* We need to keep extra room for a newline */
++ if (count >= (PAGE_SIZE - 1))
+ return -EINVAL;
+
+ driver_override = kstrndup(buf, count, GFP_KERNEL);
+@@ -93,12 +95,15 @@ static ssize_t driver_override_store(struct device *_dev,
+ if (cp)
+ *cp = '\0';
+
++ device_lock(_dev);
++ old = dev->driver_override;
+ if (strlen(driver_override)) {
+ dev->driver_override = driver_override;
+ } else {
+ kfree(driver_override);
+ dev->driver_override = NULL;
+ }
++ device_unlock(_dev);
+
+ kfree(old);
+
+diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
+index 3b0cebb2122b..19733cdcd45c 100644
+--- a/drivers/ata/ahci.c
++++ b/drivers/ata/ahci.c
+@@ -542,7 +542,9 @@ static const struct pci_device_id ahci_pci_tbl[] = {
+ .driver_data = board_ahci_yes_fbs },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
+ .driver_data = board_ahci_yes_fbs },
+- { PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642),
++ { PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
++ .driver_data = board_ahci_yes_fbs },
++ { PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */
+ .driver_data = board_ahci_yes_fbs },
+
+ /* Promise */
+diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
+index d89305d289f6..cf7fdb79c992 100644
+--- a/drivers/ata/libahci_platform.c
++++ b/drivers/ata/libahci_platform.c
+@@ -514,8 +514,9 @@ int ahci_platform_init_host(struct platform_device *pdev,
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq <= 0) {
+- dev_err(dev, "no irq\n");
+- return -EINVAL;
++ if (irq != -EPROBE_DEFER)
++ dev_err(dev, "no irq\n");
++ return irq;
+ }
+
+ /* prepare host */
+diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
+index b31d6853ba7a..accad0598253 100644
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -4226,6 +4226,28 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ { "PIONEER DVD-RW DVR-212D", NULL, ATA_HORKAGE_NOSETXFER },
+ { "PIONEER DVD-RW DVR-216D", NULL, ATA_HORKAGE_NOSETXFER },
+
++ /* Crucial BX100 SSD 500GB has broken LPM support */
++ { "CT500BX100SSD1", NULL, ATA_HORKAGE_NOLPM },
++
++ /* 512GB MX100 with MU01 firmware has both queued TRIM and LPM issues */
++ { "Crucial_CT512MX100*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
++ ATA_HORKAGE_ZERO_AFTER_TRIM |
++ ATA_HORKAGE_NOLPM, },
++ /* 512GB MX100 with newer firmware has only LPM issues */
++ { "Crucial_CT512MX100*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM |
++ ATA_HORKAGE_NOLPM, },
++
++ /* 480GB+ M500 SSDs have both queued TRIM and LPM issues */
++ { "Crucial_CT480M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
++ ATA_HORKAGE_ZERO_AFTER_TRIM |
++ ATA_HORKAGE_NOLPM, },
++ { "Crucial_CT960M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
++ ATA_HORKAGE_ZERO_AFTER_TRIM |
++ ATA_HORKAGE_NOLPM, },
++
++ /* Sandisk devices which are known to not handle LPM well */
++ { "SanDisk SD7UB3Q*G1001", NULL, ATA_HORKAGE_NOLPM, },
++
+ /* devices that don't properly handle queued TRIM commands */
+ { "Micron_M500_*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+@@ -4237,7 +4259,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+ { "Crucial_CT*MX100*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+- { "Samsung SSD 8*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
++ { "Samsung SSD 840*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
++ ATA_HORKAGE_ZERO_AFTER_TRIM, },
++ { "Samsung SSD 850*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+ { "FCCT*M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+@@ -5078,8 +5102,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
+ * We guarantee to LLDs that they will have at least one
+ * non-zero sg if the command is a data command.
+ */
+- if (WARN_ON_ONCE(ata_is_data(prot) &&
+- (!qc->sg || !qc->n_elem || !qc->nbytes)))
++ if (ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes))
+ goto sys_err;
+
+ if (ata_is_dma(prot) || (ata_is_pio(prot) &&
+diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
+index 4d4cdade9d7e..c471bb8637f9 100644
+--- a/drivers/ata/libata-scsi.c
++++ b/drivers/ata/libata-scsi.c
+@@ -3465,7 +3465,9 @@ static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd,
+ if (likely((scsi_op != ATA_16) || !atapi_passthru16)) {
+ /* relay SCSI command to ATAPI device */
+ int len = COMMAND_SIZE(scsi_op);
+- if (unlikely(len > scmd->cmd_len || len > dev->cdb_len))
++ if (unlikely(len > scmd->cmd_len ||
++ len > dev->cdb_len ||
++ scmd->cmd_len > ATAPI_CDB_LEN))
+ goto bad_cdb_len;
+
+ xlat_func = atapi_xlat;
+diff --git a/drivers/block/loop.c b/drivers/block/loop.c
+index 9e72be28ee9f..53d22cc3cd3e 100644
+--- a/drivers/block/loop.c
++++ b/drivers/block/loop.c
+@@ -471,6 +471,9 @@ static int loop_switch(struct loop_device *lo, struct file *file)
+ */
+ static int loop_flush(struct loop_device *lo)
+ {
++ /* loop not yet configured, no running thread, nothing to flush */
++ if (lo->lo_state != Lo_bound)
++ return 0;
+ return loop_switch(lo, NULL);
+ }
+
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index 32f5b87fe93c..68a92550b4cd 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -203,7 +203,6 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
+- { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
+@@ -236,6 +235,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
+
+ /* QCA ROME chipset */
++ { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_QCA_ROME },
+ { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
+ { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
+ { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
+diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c
+index 738612c45266..8f78990205ec 100644
+--- a/drivers/bus/brcmstb_gisb.c
++++ b/drivers/bus/brcmstb_gisb.c
+@@ -33,8 +33,6 @@
+ #define ARB_ERR_CAP_CLEAR (1 << 0)
+ #define ARB_ERR_CAP_STATUS_TIMEOUT (1 << 12)
+ #define ARB_ERR_CAP_STATUS_TEA (1 << 11)
+-#define ARB_ERR_CAP_STATUS_BS_SHIFT (1 << 2)
+-#define ARB_ERR_CAP_STATUS_BS_MASK 0x3c
+ #define ARB_ERR_CAP_STATUS_WRITE (1 << 1)
+ #define ARB_ERR_CAP_STATUS_VALID (1 << 0)
+
+@@ -43,7 +41,6 @@ enum {
+ ARB_ERR_CAP_CLR,
+ ARB_ERR_CAP_HI_ADDR,
+ ARB_ERR_CAP_ADDR,
+- ARB_ERR_CAP_DATA,
+ ARB_ERR_CAP_STATUS,
+ ARB_ERR_CAP_MASTER,
+ };
+@@ -53,7 +50,6 @@ static const int gisb_offsets_bcm7038[] = {
+ [ARB_ERR_CAP_CLR] = 0x0c4,
+ [ARB_ERR_CAP_HI_ADDR] = -1,
+ [ARB_ERR_CAP_ADDR] = 0x0c8,
+- [ARB_ERR_CAP_DATA] = 0x0cc,
+ [ARB_ERR_CAP_STATUS] = 0x0d0,
+ [ARB_ERR_CAP_MASTER] = -1,
+ };
+@@ -63,7 +59,6 @@ static const int gisb_offsets_bcm7400[] = {
+ [ARB_ERR_CAP_CLR] = 0x0c8,
+ [ARB_ERR_CAP_HI_ADDR] = -1,
+ [ARB_ERR_CAP_ADDR] = 0x0cc,
+- [ARB_ERR_CAP_DATA] = 0x0d0,
+ [ARB_ERR_CAP_STATUS] = 0x0d4,
+ [ARB_ERR_CAP_MASTER] = 0x0d8,
+ };
+@@ -73,7 +68,6 @@ static const int gisb_offsets_bcm7435[] = {
+ [ARB_ERR_CAP_CLR] = 0x168,
+ [ARB_ERR_CAP_HI_ADDR] = -1,
+ [ARB_ERR_CAP_ADDR] = 0x16c,
+- [ARB_ERR_CAP_DATA] = 0x170,
+ [ARB_ERR_CAP_STATUS] = 0x174,
+ [ARB_ERR_CAP_MASTER] = 0x178,
+ };
+@@ -83,7 +77,6 @@ static const int gisb_offsets_bcm7445[] = {
+ [ARB_ERR_CAP_CLR] = 0x7e4,
+ [ARB_ERR_CAP_HI_ADDR] = 0x7e8,
+ [ARB_ERR_CAP_ADDR] = 0x7ec,
+- [ARB_ERR_CAP_DATA] = 0x7f0,
+ [ARB_ERR_CAP_STATUS] = 0x7f4,
+ [ARB_ERR_CAP_MASTER] = 0x7f8,
+ };
+@@ -104,13 +97,27 @@ static u32 gisb_read(struct brcmstb_gisb_arb_device *gdev, int reg)
+ {
+ int offset = gdev->gisb_offsets[reg];
+
+- /* return 1 if the hardware doesn't have ARB_ERR_CAP_MASTER */
+- if (offset == -1)
+- return 1;
++ if (offset < 0) {
++ /* return 1 if the hardware doesn't have ARB_ERR_CAP_MASTER */
++ if (reg == ARB_ERR_CAP_MASTER)
++ return 1;
++ else
++ return 0;
++ }
+
+ return ioread32(gdev->base + offset);
+ }
+
++static u64 gisb_read_address(struct brcmstb_gisb_arb_device *gdev)
++{
++ u64 value;
++
++ value = gisb_read(gdev, ARB_ERR_CAP_ADDR);
++ value |= (u64)gisb_read(gdev, ARB_ERR_CAP_HI_ADDR) << 32;
++
++ return value;
++}
++
+ static void gisb_write(struct brcmstb_gisb_arb_device *gdev, u32 val, int reg)
+ {
+ int offset = gdev->gisb_offsets[reg];
+@@ -173,7 +180,7 @@ static int brcmstb_gisb_arb_decode_addr(struct brcmstb_gisb_arb_device *gdev,
+ const char *reason)
+ {
+ u32 cap_status;
+- unsigned long arb_addr;
++ u64 arb_addr;
+ u32 master;
+ const char *m_name;
+ char m_fmt[11];
+@@ -185,10 +192,7 @@ static int brcmstb_gisb_arb_decode_addr(struct brcmstb_gisb_arb_device *gdev,
+ return 1;
+
+ /* Read the address and master */
+- arb_addr = gisb_read(gdev, ARB_ERR_CAP_ADDR) & 0xffffffff;
+-#if (IS_ENABLED(CONFIG_PHYS_ADDR_T_64BIT))
+- arb_addr |= (u64)gisb_read(gdev, ARB_ERR_CAP_HI_ADDR) << 32;
+-#endif
++ arb_addr = gisb_read_address(gdev);
+ master = gisb_read(gdev, ARB_ERR_CAP_MASTER);
+
+ m_name = brcmstb_gisb_master_to_str(gdev, master);
+@@ -197,7 +201,7 @@ static int brcmstb_gisb_arb_decode_addr(struct brcmstb_gisb_arb_device *gdev,
+ m_name = m_fmt;
+ }
+
+- pr_crit("%s: %s at 0x%lx [%c %s], core: %s\n",
++ pr_crit("%s: %s at 0x%llx [%c %s], core: %s\n",
+ __func__, reason, arb_addr,
+ cap_status & ARB_ERR_CAP_STATUS_WRITE ? 'W' : 'R',
+ cap_status & ARB_ERR_CAP_STATUS_TIMEOUT ? "timeout" : "",
+diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
+index 5d28a45d2960..3922ce87c2e4 100644
+--- a/drivers/cdrom/cdrom.c
++++ b/drivers/cdrom/cdrom.c
+@@ -2357,7 +2357,7 @@ static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
+ if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
+ return media_changed(cdi, 1);
+
+- if ((unsigned int)arg >= cdi->capacity)
++ if (arg >= cdi->capacity)
+ return -EINVAL;
+
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
+index c6dea3f6917b..b38e31221a7e 100644
+--- a/drivers/char/agp/intel-gtt.c
++++ b/drivers/char/agp/intel-gtt.c
+@@ -859,6 +859,8 @@ void intel_gtt_insert_sg_entries(struct sg_table *st,
+ }
+ }
+ wmb();
++ if (intel_private.driver->chipset_flush)
++ intel_private.driver->chipset_flush();
+ }
+ EXPORT_SYMBOL(intel_gtt_insert_sg_entries);
+
+diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
+index 9156bbd90b56..0166be52aacb 100644
+--- a/drivers/char/ipmi/ipmi_ssif.c
++++ b/drivers/char/ipmi/ipmi_ssif.c
+@@ -408,6 +408,7 @@ static void start_event_fetch(struct ssif_info *ssif_info, unsigned long *flags)
+ msg = ipmi_alloc_smi_msg();
+ if (!msg) {
+ ssif_info->ssif_state = SSIF_NORMAL;
++ ipmi_ssif_unlock_cond(ssif_info, flags);
+ return;
+ }
+
+@@ -430,6 +431,7 @@ static void start_recv_msg_fetch(struct ssif_info *ssif_info,
+ msg = ipmi_alloc_smi_msg();
+ if (!msg) {
+ ssif_info->ssif_state = SSIF_NORMAL;
++ ipmi_ssif_unlock_cond(ssif_info, flags);
+ return;
+ }
+
+diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
+index f335fcee09af..0109d3fb5fbc 100644
+--- a/drivers/char/ipmi/ipmi_watchdog.c
++++ b/drivers/char/ipmi/ipmi_watchdog.c
+@@ -509,7 +509,7 @@ static void panic_halt_ipmi_heartbeat(void)
+ msg.cmd = IPMI_WDOG_RESET_TIMER;
+ msg.data = NULL;
+ msg.data_len = 0;
+- atomic_add(2, &panic_done_count);
++ atomic_add(1, &panic_done_count);
+ rv = ipmi_request_supply_msgs(watchdog_user,
+ (struct ipmi_addr *) &addr,
+ 0,
+@@ -519,7 +519,7 @@ static void panic_halt_ipmi_heartbeat(void)
+ &panic_halt_heartbeat_recv_msg,
+ 1);
+ if (rv)
+- atomic_sub(2, &panic_done_count);
++ atomic_sub(1, &panic_done_count);
+ }
+
+ static struct ipmi_smi_msg panic_halt_smi_msg = {
+@@ -543,12 +543,12 @@ static void panic_halt_ipmi_set_timeout(void)
+ /* Wait for the messages to be free. */
+ while (atomic_read(&panic_done_count) != 0)
+ ipmi_poll_interface(watchdog_user);
+- atomic_add(2, &panic_done_count);
++ atomic_add(1, &panic_done_count);
+ rv = i_ipmi_set_timeout(&panic_halt_smi_msg,
+ &panic_halt_recv_msg,
+ &send_heartbeat_now);
+ if (rv) {
+- atomic_sub(2, &panic_done_count);
++ atomic_sub(1, &panic_done_count);
+ printk(KERN_WARNING PFX
+ "Unable to extend the watchdog timeout.");
+ } else {
+diff --git a/drivers/char/random.c b/drivers/char/random.c
+index d55156fc064d..4ba5c7e4e254 100644
+--- a/drivers/char/random.c
++++ b/drivers/char/random.c
+@@ -704,7 +704,7 @@ retry:
+
+ static void credit_entropy_bits_safe(struct entropy_store *r, int nbits)
+ {
+- const int nbits_max = (int)(~0U >> (ENTROPY_SHIFT + 1));
++ const int nbits_max = r->poolinfo->poolwords * 32;
+
+ /* Cap the value to avoid overflows */
+ nbits = min(nbits, nbits_max);
+@@ -863,12 +863,16 @@ static void add_interrupt_bench(cycles_t start)
+ static __u32 get_reg(struct fast_pool *f, struct pt_regs *regs)
+ {
+ __u32 *ptr = (__u32 *) regs;
++ unsigned int idx;
+
+ if (regs == NULL)
+ return 0;
+- if (f->reg_idx >= sizeof(struct pt_regs) / sizeof(__u32))
+- f->reg_idx = 0;
+- return *(ptr + f->reg_idx++);
++ idx = READ_ONCE(f->reg_idx);
++ if (idx >= sizeof(struct pt_regs) / sizeof(__u32))
++ idx = 0;
++ ptr += idx++;
++ WRITE_ONCE(f->reg_idx, idx);
++ return *ptr;
+ }
+
+ void add_interrupt_randomness(int irq, int irq_flags)
+diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
+index 5809567d3cf0..d696e5c3d079 100644
+--- a/drivers/char/tpm/tpm_tis.c
++++ b/drivers/char/tpm/tpm_tis.c
+@@ -283,7 +283,8 @@ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)
+ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+ {
+ int size = 0;
+- int expected, status;
++ int status;
++ u32 expected;
+
+ if (count < TPM_HEADER_SIZE) {
+ size = -EIO;
+@@ -298,7 +299,7 @@ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+ }
+
+ expected = be32_to_cpu(*(__be32 *) (buf + 2));
+- if (expected > count) {
++ if (expected > count || expected < TPM_HEADER_SIZE) {
+ size = -EIO;
+ goto out;
+ }
+diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
+index 374b0006aa7a..a7adfc633db9 100644
+--- a/drivers/char/virtio_console.c
++++ b/drivers/char/virtio_console.c
+@@ -1399,7 +1399,6 @@ static int add_port(struct ports_device *portdev, u32 id)
+ {
+ char debugfs_name[16];
+ struct port *port;
+- struct port_buffer *buf;
+ dev_t devt;
+ unsigned int nr_added_bufs;
+ int err;
+@@ -1510,8 +1509,6 @@ static int add_port(struct ports_device *portdev, u32 id)
+ return 0;
+
+ free_inbufs:
+- while ((buf = virtqueue_detach_unused_buf(port->in_vq)))
+- free_buf(buf, true);
+ free_device:
+ device_destroy(pdrvdata.class, port->dev->devt);
+ free_cdev:
+@@ -1536,34 +1533,14 @@ static void remove_port(struct kref *kref)
+
+ static void remove_port_data(struct port *port)
+ {
+- struct port_buffer *buf;
+-
+ spin_lock_irq(&port->inbuf_lock);
+ /* Remove unused data this port might have received. */
+ discard_port_data(port);
+ spin_unlock_irq(&port->inbuf_lock);
+
+- /* Remove buffers we queued up for the Host to send us data in. */
+- do {
+- spin_lock_irq(&port->inbuf_lock);
+- buf = virtqueue_detach_unused_buf(port->in_vq);
+- spin_unlock_irq(&port->inbuf_lock);
+- if (buf)
+- free_buf(buf, true);
+- } while (buf);
+-
+ spin_lock_irq(&port->outvq_lock);
+ reclaim_consumed_buffers(port);
+ spin_unlock_irq(&port->outvq_lock);
+-
+- /* Free pending buffers from the out-queue. */
+- do {
+- spin_lock_irq(&port->outvq_lock);
+- buf = virtqueue_detach_unused_buf(port->out_vq);
+- spin_unlock_irq(&port->outvq_lock);
+- if (buf)
+- free_buf(buf, true);
+- } while (buf);
+ }
+
+ /*
+@@ -1788,13 +1765,24 @@ static void control_work_handler(struct work_struct *work)
+ spin_unlock(&portdev->c_ivq_lock);
+ }
+
++static void flush_bufs(struct virtqueue *vq, bool can_sleep)
++{
++ struct port_buffer *buf;
++ unsigned int len;
++
++ while ((buf = virtqueue_get_buf(vq, &len)))
++ free_buf(buf, can_sleep);
++}
++
+ static void out_intr(struct virtqueue *vq)
+ {
+ struct port *port;
+
+ port = find_port_by_vq(vq->vdev->priv, vq);
+- if (!port)
++ if (!port) {
++ flush_bufs(vq, false);
+ return;
++ }
+
+ wake_up_interruptible(&port->waitqueue);
+ }
+@@ -1805,8 +1793,10 @@ static void in_intr(struct virtqueue *vq)
+ unsigned long flags;
+
+ port = find_port_by_vq(vq->vdev->priv, vq);
+- if (!port)
++ if (!port) {
++ flush_bufs(vq, false);
+ return;
++ }
+
+ spin_lock_irqsave(&port->inbuf_lock, flags);
+ port->inbuf = get_inbuf(port);
+@@ -1981,6 +1971,15 @@ static const struct file_operations portdev_fops = {
+
+ static void remove_vqs(struct ports_device *portdev)
+ {
++ struct virtqueue *vq;
++
++ virtio_device_for_each_vq(portdev->vdev, vq) {
++ struct port_buffer *buf;
++
++ flush_bufs(vq, true);
++ while ((buf = virtqueue_detach_unused_buf(vq)))
++ free_buf(buf, true);
++ }
+ portdev->vdev->config->del_vqs(portdev->vdev);
+ kfree(portdev->in_vqs);
+ kfree(portdev->out_vqs);
+diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c
+index 30335d3b99af..9db6d57f7ccc 100644
+--- a/drivers/clk/clk-si5351.c
++++ b/drivers/clk/clk-si5351.c
+@@ -72,7 +72,7 @@ static const char * const si5351_input_names[] = {
+ "xtal", "clkin"
+ };
+ static const char * const si5351_pll_names[] = {
+- "plla", "pllb", "vxco"
++ "si5351_plla", "si5351_pllb", "si5351_vxco"
+ };
+ static const char * const si5351_msynth_names[] = {
+ "ms0", "ms1", "ms2", "ms3", "ms4", "ms5", "ms6", "ms7"
+diff --git a/drivers/clk/mvebu/armada-38x.c b/drivers/clk/mvebu/armada-38x.c
+index 8bccf4ecdab6..9ff4ea63932d 100644
+--- a/drivers/clk/mvebu/armada-38x.c
++++ b/drivers/clk/mvebu/armada-38x.c
+@@ -46,10 +46,11 @@ static u32 __init armada_38x_get_tclk_freq(void __iomem *sar)
+ }
+
+ static const u32 armada_38x_cpu_frequencies[] __initconst = {
+- 0, 0, 0, 0,
+- 1066 * 1000 * 1000, 0, 0, 0,
++ 666 * 1000 * 1000, 0, 800 * 1000 * 1000, 0,
++ 1066 * 1000 * 1000, 0, 1200 * 1000 * 1000, 0,
+ 1332 * 1000 * 1000, 0, 0, 0,
+- 1600 * 1000 * 1000,
++ 1600 * 1000 * 1000, 0, 0, 0,
++ 1866 * 1000 * 1000, 0, 0, 2000 * 1000 * 1000,
+ };
+
+ static u32 __init armada_38x_get_cpu_freq(void __iomem *sar)
+@@ -75,11 +76,11 @@ static const struct coreclk_ratio armada_38x_coreclk_ratios[] __initconst = {
+ };
+
+ static const int armada_38x_cpu_l2_ratios[32][2] __initconst = {
+- {0, 1}, {0, 1}, {0, 1}, {0, 1},
+- {1, 2}, {0, 1}, {0, 1}, {0, 1},
++ {1, 2}, {0, 1}, {1, 2}, {0, 1},
++ {1, 2}, {0, 1}, {1, 2}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+- {0, 1}, {0, 1}, {0, 1}, {0, 1},
++ {1, 2}, {0, 1}, {0, 1}, {1, 2},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+@@ -90,7 +91,7 @@ static const int armada_38x_cpu_ddr_ratios[32][2] __initconst = {
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+- {0, 1}, {0, 1}, {0, 1}, {0, 1},
++ {1, 2}, {0, 1}, {0, 1}, {7, 15},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+diff --git a/drivers/cpufreq/sh-cpufreq.c b/drivers/cpufreq/sh-cpufreq.c
+index 86628e22b2a3..719c3d9f07fb 100644
+--- a/drivers/cpufreq/sh-cpufreq.c
++++ b/drivers/cpufreq/sh-cpufreq.c
+@@ -30,54 +30,63 @@
+
+ static DEFINE_PER_CPU(struct clk, sh_cpuclk);
+
++struct cpufreq_target {
++ struct cpufreq_policy *policy;
++ unsigned int freq;
++};
++
+ static unsigned int sh_cpufreq_get(unsigned int cpu)
+ {
+ return (clk_get_rate(&per_cpu(sh_cpuclk, cpu)) + 500) / 1000;
+ }
+
+-/*
+- * Here we notify other drivers of the proposed change and the final change.
+- */
+-static int sh_cpufreq_target(struct cpufreq_policy *policy,
+- unsigned int target_freq,
+- unsigned int relation)
++static long __sh_cpufreq_target(void *arg)
+ {
+- unsigned int cpu = policy->cpu;
++ struct cpufreq_target *target = arg;
++ struct cpufreq_policy *policy = target->policy;
++ int cpu = policy->cpu;
+ struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
+- cpumask_t cpus_allowed;
+ struct cpufreq_freqs freqs;
+ struct device *dev;
+ long freq;
+
+- cpus_allowed = current->cpus_allowed;
+- set_cpus_allowed_ptr(current, cpumask_of(cpu));
+-
+- BUG_ON(smp_processor_id() != cpu);
++ if (smp_processor_id() != cpu)
++ return -ENODEV;
+
+ dev = get_cpu_device(cpu);
+
+ /* Convert target_freq from kHz to Hz */
+- freq = clk_round_rate(cpuclk, target_freq * 1000);
++ freq = clk_round_rate(cpuclk, target->freq * 1000);
+
+ if (freq < (policy->min * 1000) || freq > (policy->max * 1000))
+ return -EINVAL;
+
+- dev_dbg(dev, "requested frequency %u Hz\n", target_freq * 1000);
++ dev_dbg(dev, "requested frequency %u Hz\n", target->freq * 1000);
+
+ freqs.old = sh_cpufreq_get(cpu);
+ freqs.new = (freq + 500) / 1000;
+ freqs.flags = 0;
+
+- cpufreq_freq_transition_begin(policy, &freqs);
+- set_cpus_allowed_ptr(current, &cpus_allowed);
++ cpufreq_freq_transition_begin(target->policy, &freqs);
+ clk_set_rate(cpuclk, freq);
+- cpufreq_freq_transition_end(policy, &freqs, 0);
++ cpufreq_freq_transition_end(target->policy, &freqs, 0);
+
+ dev_dbg(dev, "set frequency %lu Hz\n", freq);
+-
+ return 0;
+ }
+
++/*
++ * Here we notify other drivers of the proposed change and the final change.
++ */
++static int sh_cpufreq_target(struct cpufreq_policy *policy,
++ unsigned int target_freq,
++ unsigned int relation)
++{
++ struct cpufreq_target data = { .policy = policy, .freq = target_freq };
++
++ return work_on_cpu(policy->cpu, __sh_cpufreq_target, &data);
++}
++
+ static int sh_cpufreq_verify(struct cpufreq_policy *policy)
+ {
+ struct clk *cpuclk = &per_cpu(sh_cpuclk, policy->cpu);
+diff --git a/drivers/cpuidle/dt_idle_states.c b/drivers/cpuidle/dt_idle_states.c
+index a5c111b67f37..ea11a33e7fff 100644
+--- a/drivers/cpuidle/dt_idle_states.c
++++ b/drivers/cpuidle/dt_idle_states.c
+@@ -174,8 +174,10 @@ int dt_init_idle_driver(struct cpuidle_driver *drv,
+ if (!state_node)
+ break;
+
+- if (!of_device_is_available(state_node))
++ if (!of_device_is_available(state_node)) {
++ of_node_put(state_node);
+ continue;
++ }
+
+ if (!idle_state_valid(state_node, i, cpumask)) {
+ pr_warn("%s idle state not valid, bailing out\n",
+diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
+index c5e6c82516ce..e4b4c5c07037 100644
+--- a/drivers/dma/at_xdmac.c
++++ b/drivers/dma/at_xdmac.c
+@@ -1003,10 +1003,10 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ for (retry = 0; retry < AT_XDMAC_RESIDUE_MAX_RETRIES; retry++) {
+ check_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
+ rmb();
+- initd = !!(at_xdmac_chan_read(atchan, AT_XDMAC_CC) & AT_XDMAC_CC_INITD);
+- rmb();
+ cur_ubc = at_xdmac_chan_read(atchan, AT_XDMAC_CUBC);
+ rmb();
++ initd = !!(at_xdmac_chan_read(atchan, AT_XDMAC_CC) & AT_XDMAC_CC_INITD);
++ rmb();
+ cur_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
+ rmb();
+
+diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
+index 62bbd79338e0..348259b0db52 100644
+--- a/drivers/dma/imx-sdma.c
++++ b/drivers/dma/imx-sdma.c
+@@ -1503,17 +1503,24 @@ static int sdma_probe(struct platform_device *pdev)
+ if (IS_ERR(sdma->clk_ahb))
+ return PTR_ERR(sdma->clk_ahb);
+
+- clk_prepare(sdma->clk_ipg);
+- clk_prepare(sdma->clk_ahb);
++ ret = clk_prepare(sdma->clk_ipg);
++ if (ret)
++ return ret;
++
++ ret = clk_prepare(sdma->clk_ahb);
++ if (ret)
++ goto err_clk;
+
+ ret = devm_request_irq(&pdev->dev, irq, sdma_int_handler, 0, "sdma",
+ sdma);
+ if (ret)
+- return ret;
++ goto err_irq;
+
+ sdma->script_addrs = kzalloc(sizeof(*sdma->script_addrs), GFP_KERNEL);
+- if (!sdma->script_addrs)
+- return -ENOMEM;
++ if (!sdma->script_addrs) {
++ ret = -ENOMEM;
++ goto err_irq;
++ }
+
+ /* initially no scripts available */
+ saddr_arr = (s32 *)sdma->script_addrs;
+@@ -1618,6 +1625,10 @@ err_register:
+ dma_async_device_unregister(&sdma->dma_device);
+ err_init:
+ kfree(sdma->script_addrs);
++err_irq:
++ clk_unprepare(sdma->clk_ahb);
++err_clk:
++ clk_unprepare(sdma->clk_ipg);
+ return ret;
+ }
+
+@@ -1628,6 +1639,8 @@ static int sdma_remove(struct platform_device *pdev)
+
+ dma_async_device_unregister(&sdma->dma_device);
+ kfree(sdma->script_addrs);
++ clk_unprepare(sdma->clk_ahb);
++ clk_unprepare(sdma->clk_ipg);
+ /* Kill the tasklet */
+ for (i = 0; i < MAX_DMA_CHANNELS; i++) {
+ struct sdma_channel *sdmac = &sdma->channel[i];
+diff --git a/drivers/edac/mv64x60_edac.c b/drivers/edac/mv64x60_edac.c
+index 0574e1bbe45c..3ce5609b4611 100644
+--- a/drivers/edac/mv64x60_edac.c
++++ b/drivers/edac/mv64x60_edac.c
+@@ -763,7 +763,7 @@ static int mv64x60_mc_err_probe(struct platform_device *pdev)
+ /* Non-ECC RAM? */
+ printk(KERN_WARNING "%s: No ECC DIMMs discovered\n", __func__);
+ res = -ENODEV;
+- goto err2;
++ goto err;
+ }
+
+ edac_dbg(3, "init mci\n");
+diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
+index 95752d38b7fe..2ce21d9340cd 100644
+--- a/drivers/gpio/gpiolib.c
++++ b/drivers/gpio/gpiolib.c
+@@ -1998,7 +1998,8 @@ struct gpio_desc *__must_check __gpiod_get_index(struct device *dev,
+ return desc;
+ }
+
+- status = gpiod_request(desc, con_id);
++ /* If a connection label was passed use that, else use the device name as label */
++ status = gpiod_request(desc, con_id ? con_id : dev_name(dev));
+ if (status < 0)
+ return ERR_PTR(status);
+
+diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+index c25728bc388a..fc924d375d95 100644
+--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
++++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+@@ -519,11 +519,17 @@ static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
+ return ret;
+ }
+
++static void kfd_topology_kobj_release(struct kobject *kobj)
++{
++ kfree(kobj);
++}
++
+ static const struct sysfs_ops sysprops_ops = {
+ .show = sysprops_show,
+ };
+
+ static struct kobj_type sysprops_type = {
++ .release = kfd_topology_kobj_release,
+ .sysfs_ops = &sysprops_ops,
+ };
+
+@@ -559,6 +565,7 @@ static const struct sysfs_ops iolink_ops = {
+ };
+
+ static struct kobj_type iolink_type = {
++ .release = kfd_topology_kobj_release,
+ .sysfs_ops = &iolink_ops,
+ };
+
+@@ -586,6 +593,7 @@ static const struct sysfs_ops mem_ops = {
+ };
+
+ static struct kobj_type mem_type = {
++ .release = kfd_topology_kobj_release,
+ .sysfs_ops = &mem_ops,
+ };
+
+@@ -625,6 +633,7 @@ static const struct sysfs_ops cache_ops = {
+ };
+
+ static struct kobj_type cache_type = {
++ .release = kfd_topology_kobj_release,
+ .sysfs_ops = &cache_ops,
+ };
+
+@@ -747,6 +756,7 @@ static const struct sysfs_ops node_ops = {
+ };
+
+ static struct kobj_type node_type = {
++ .release = kfd_topology_kobj_release,
+ .sysfs_ops = &node_ops,
+ };
+
+diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
+index 53bc7a628909..27d5c7867e92 100644
+--- a/drivers/gpu/drm/drm_edid.c
++++ b/drivers/gpu/drm/drm_edid.c
+@@ -3103,8 +3103,7 @@ monitor_name(struct detailed_timing *t, void *data)
+ * @edid: EDID to parse
+ *
+ * Fill the ELD (EDID-Like Data) buffer for passing to the audio driver. The
+- * Conn_Type, HDCP and Port_ID ELD fields are left for the graphics driver to
+- * fill in.
++ * HDCP and Port_ID ELD fields are left for the graphics driver to fill in.
+ */
+ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
+ {
+@@ -3177,6 +3176,12 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
+ }
+ eld[5] |= sad_count << 4;
+
++ if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
++ connector->connector_type == DRM_MODE_CONNECTOR_eDP)
++ eld[DRM_ELD_SAD_COUNT_CONN_TYPE] |= DRM_ELD_CONN_TYPE_DP;
++ else
++ eld[DRM_ELD_SAD_COUNT_CONN_TYPE] |= DRM_ELD_CONN_TYPE_HDMI;
++
+ eld[DRM_ELD_BASELINE_ELD_LEN] =
+ DIV_ROUND_UP(drm_eld_calc_baseline_block_size(eld), 4);
+
+diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
+index af9662e58272..5ab0f02a2ab1 100644
+--- a/drivers/gpu/drm/drm_irq.c
++++ b/drivers/gpu/drm/drm_irq.c
+@@ -1090,9 +1090,9 @@ void drm_vblank_put(struct drm_device *dev, int crtc)
+ if (atomic_dec_and_test(&vblank->refcount)) {
+ if (drm_vblank_offdelay == 0)
+ return;
+- else if (dev->vblank_disable_immediate || drm_vblank_offdelay < 0)
++ else if (drm_vblank_offdelay < 0)
+ vblank_disable_fn((unsigned long)vblank);
+- else
++ else if (!dev->vblank_disable_immediate)
+ mod_timer(&vblank->disable_timer,
+ jiffies + ((drm_vblank_offdelay * HZ)/1000));
+ }
+@@ -1750,6 +1750,16 @@ bool drm_handle_vblank(struct drm_device *dev, int crtc)
+ wake_up(&vblank->queue);
+ drm_handle_vblank_events(dev, crtc);
+
++ /* With instant-off, we defer disabling the interrupt until after
++ * we finish processing the following vblank. The disable has to
++ * be last (after drm_handle_vblank_events) so that the timestamp
++ * is always accurate.
++ */
++ if (dev->vblank_disable_immediate &&
++ drm_vblank_offdelay > 0 &&
++ !atomic_read(&vblank->refcount))
++ vblank_disable_fn((unsigned long)vblank);
++
+ spin_unlock_irqrestore(&dev->event_lock, irqflags);
+
+ return true;
+diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
+index 0d5b9698d384..e7d6139528ca 100644
+--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
++++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
+@@ -241,6 +241,15 @@ struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev,
+
+ exynos_gem_obj->buffer = buf;
+
++ if (!is_drm_iommu_supported(dev) && (flags & EXYNOS_BO_NONCONTIG)) {
++ /*
++ * when no IOMMU is available, all allocated buffers are
++ * contiguous anyway, so drop EXYNOS_BO_NONCONTIG flag
++ */
++ flags &= ~EXYNOS_BO_NONCONTIG;
++ DRM_WARN("Non-contiguous allocation is not supported without IOMMU, falling back to contiguous buffer\n");
++ }
++
+ /* set memory type and cache attribute from user side. */
+ exynos_gem_obj->flags = flags;
+
+diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
+index 52839769eb6c..e101c2868734 100644
+--- a/drivers/gpu/drm/msm/msm_gem.c
++++ b/drivers/gpu/drm/msm/msm_gem.c
+@@ -89,14 +89,17 @@ static struct page **get_pages(struct drm_gem_object *obj)
+ return p;
+ }
+
++ msm_obj->pages = p;
++
+ msm_obj->sgt = drm_prime_pages_to_sg(p, npages);
+ if (IS_ERR(msm_obj->sgt)) {
++ void *ptr = ERR_CAST(msm_obj->sgt);
++
+ dev_err(dev->dev, "failed to allocate sgt\n");
+- return ERR_CAST(msm_obj->sgt);
++ msm_obj->sgt = NULL;
++ return ptr;
+ }
+
+- msm_obj->pages = p;
+-
+ /* For non-cached buffers, ensure the new pages are clean
+ * because display controller, GPU, etc. are not coherent:
+ */
+@@ -119,7 +122,10 @@ static void put_pages(struct drm_gem_object *obj)
+ if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED))
+ dma_unmap_sg(obj->dev->dev, msm_obj->sgt->sgl,
+ msm_obj->sgt->nents, DMA_BIDIRECTIONAL);
+- sg_free_table(msm_obj->sgt);
++
++ if (msm_obj->sgt)
++ sg_free_table(msm_obj->sgt);
++
+ kfree(msm_obj->sgt);
+
+ if (use_pages(obj))
+diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
+index 6e6634cd1d17..9eedb17a6b1b 100644
+--- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
++++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
+@@ -287,7 +287,12 @@ static int dmm_txn_commit(struct dmm_txn *txn, bool wait)
+ msecs_to_jiffies(1))) {
+ dev_err(dmm->dev, "timed out waiting for done\n");
+ ret = -ETIMEDOUT;
++ goto cleanup;
+ }
++
++ /* Check the engine status before continue */
++ ret = wait_status(engine, DMM_PATSTATUS_READY |
++ DMM_PATSTATUS_VALID | DMM_PATSTATUS_DONE);
+ }
+
+ cleanup:
+diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c
+index e9718b99a8a9..ee43b48ded73 100644
+--- a/drivers/gpu/drm/omapdrm/omap_gem.c
++++ b/drivers/gpu/drm/omapdrm/omap_gem.c
+@@ -158,7 +158,7 @@ static void evict_entry(struct drm_gem_object *obj,
+ size_t size = PAGE_SIZE * n;
+ loff_t off = mmap_offset(obj) +
+ (entry->obj_pgoff << PAGE_SHIFT);
+- const int m = 1 + ((omap_obj->width << fmt) / PAGE_SIZE);
++ const int m = DIV_ROUND_UP(omap_obj->width << fmt, PAGE_SIZE);
+
+ if (m > 1) {
+ int i;
+@@ -415,7 +415,7 @@ static int fault_2d(struct drm_gem_object *obj,
+ * into account in some of the math, so figure out virtual stride
+ * in pages
+ */
+- const int m = 1 + ((omap_obj->width << fmt) / PAGE_SIZE);
++ const int m = DIV_ROUND_UP(omap_obj->width << fmt, PAGE_SIZE);
+
+ /* We don't use vmf->pgoff since that has the fake offset: */
+ pgoff = ((unsigned long)vmf->virtual_address -
+diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
+index 9f699e87320a..6806772f3647 100644
+--- a/drivers/gpu/drm/radeon/radeon_connectors.c
++++ b/drivers/gpu/drm/radeon/radeon_connectors.c
+@@ -89,25 +89,18 @@ void radeon_connector_hotplug(struct drm_connector *connector)
+ /* don't do anything if sink is not display port, i.e.,
+ * passive dp->(dvi|hdmi) adaptor
+ */
+- if (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) {
+- int saved_dpms = connector->dpms;
+- /* Only turn off the display if it's physically disconnected */
+- if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) {
+- drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+- } else if (radeon_dp_needs_link_train(radeon_connector)) {
+- /* Don't try to start link training before we
+- * have the dpcd */
+- if (!radeon_dp_getdpcd(radeon_connector))
+- return;
+-
+- /* set it to OFF so that drm_helper_connector_dpms()
+- * won't return immediately since the current state
+- * is ON at this point.
+- */
+- connector->dpms = DRM_MODE_DPMS_OFF;
+- drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+- }
+- connector->dpms = saved_dpms;
++ if (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT &&
++ radeon_hpd_sense(rdev, radeon_connector->hpd.hpd) &&
++ radeon_dp_needs_link_train(radeon_connector)) {
++ /* Don't start link training before we have the DPCD */
++ if (!radeon_dp_getdpcd(radeon_connector))
++ return;
++
++ /* Turn the connector off and back on immediately, which
++ * will trigger link training
++ */
++ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
++ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+ }
+ }
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
+index 6743174acdbc..9dad7810d21b 100644
+--- a/drivers/gpu/drm/radeon/radeon_display.c
++++ b/drivers/gpu/drm/radeon/radeon_display.c
+@@ -1321,6 +1321,12 @@ radeon_user_framebuffer_create(struct drm_device *dev,
+ return ERR_PTR(-ENOENT);
+ }
+
++ /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */
++ if (obj->import_attach) {
++ DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n");
++ return ERR_PTR(-EINVAL);
++ }
++
+ radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
+ if (radeon_fb == NULL) {
+ drm_gem_object_unreference_unlocked(obj);
+diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
+index 741065bd14b3..ad172473f047 100644
+--- a/drivers/gpu/drm/radeon/radeon_object.c
++++ b/drivers/gpu/drm/radeon/radeon_object.c
+@@ -232,9 +232,10 @@ int radeon_bo_create(struct radeon_device *rdev,
+ * may be slow
+ * See https://bugs.freedesktop.org/show_bug.cgi?id=88758
+ */
+-
++#ifndef CONFIG_COMPILE_TEST
+ #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
+ thanks to write-combining
++#endif
+
+ DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
+ "better performance thanks to write-combining\n");
+diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
+index 128bd66b8cb0..f11a37832d78 100644
+--- a/drivers/gpu/drm/radeon/si_dpm.c
++++ b/drivers/gpu/drm/radeon/si_dpm.c
+@@ -5895,9 +5895,9 @@ static void si_set_pcie_lane_width_in_smc(struct radeon_device *rdev,
+ {
+ u32 lane_width;
+ u32 new_lane_width =
+- (radeon_new_state->caps & ATOM_PPLIB_PCIE_LINK_WIDTH_MASK) >> ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT;
++ ((radeon_new_state->caps & ATOM_PPLIB_PCIE_LINK_WIDTH_MASK) >> ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT) + 1;
+ u32 current_lane_width =
+- (radeon_current_state->caps & ATOM_PPLIB_PCIE_LINK_WIDTH_MASK) >> ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT;
++ ((radeon_current_state->caps & ATOM_PPLIB_PCIE_LINK_WIDTH_MASK) >> ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT) + 1;
+
+ if (new_lane_width != current_lane_width) {
+ radeon_set_pcie_lanes(rdev, new_lane_width);
+diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
+index cd8d183dcfe5..ccb26652198b 100644
+--- a/drivers/gpu/drm/udl/udl_fb.c
++++ b/drivers/gpu/drm/udl/udl_fb.c
+@@ -256,10 +256,15 @@ static int udl_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+ {
+ unsigned long start = vma->vm_start;
+ unsigned long size = vma->vm_end - vma->vm_start;
+- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
++ unsigned long offset;
+ unsigned long page, pos;
+
+- if (offset + size > info->fix.smem_len)
++ if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
++ return -EINVAL;
++
++ offset = vma->vm_pgoff << PAGE_SHIFT;
++
++ if (offset > info->fix.smem_len || size > info->fix.smem_len - offset)
+ return -EINVAL;
+
+ pos = (unsigned long)info->fix.smem_start + offset;
+diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
+index d8638d8221ea..8331dfddbd2c 100644
+--- a/drivers/hid/hid-core.c
++++ b/drivers/hid/hid-core.c
+@@ -1308,7 +1308,7 @@ u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
+ * of implement() working on 8 byte chunks
+ */
+
+- int len = hid_report_len(report) + 7;
++ u32 len = hid_report_len(report) + 7;
+
+ return kmalloc(len, flags);
+ }
+@@ -1373,7 +1373,7 @@ void __hid_request(struct hid_device *hid, struct hid_report *report,
+ {
+ char *buf;
+ int ret;
+- int len;
++ u32 len;
+
+ buf = hid_alloc_report_buf(report, GFP_KERNEL);
+ if (!buf)
+@@ -1399,14 +1399,14 @@ out:
+ }
+ EXPORT_SYMBOL_GPL(__hid_request);
+
+-int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
++int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
+ int interrupt)
+ {
+ struct hid_report_enum *report_enum = hid->report_enum + type;
+ struct hid_report *report;
+ struct hid_driver *hdrv;
+ unsigned int a;
+- int rsize, csize = size;
++ u32 rsize, csize = size;
+ u8 *cdata = data;
+ int ret = 0;
+
+@@ -1464,7 +1464,7 @@ EXPORT_SYMBOL_GPL(hid_report_raw_event);
+ *
+ * This is data entry for lower layers.
+ */
+-int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
++int hid_input_report(struct hid_device *hid, int type, u8 *data, u32 size, int interrupt)
+ {
+ struct hid_report_enum *report_enum;
+ struct hid_driver *hdrv;
+diff --git a/drivers/hid/hid-elo.c b/drivers/hid/hid-elo.c
+index d0c8a1c1e1fe..2fc43ad7f0b6 100644
+--- a/drivers/hid/hid-elo.c
++++ b/drivers/hid/hid-elo.c
+@@ -42,6 +42,12 @@ static void elo_input_configured(struct hid_device *hdev,
+ {
+ struct input_dev *input = hidinput->input;
+
++ /*
++ * ELO devices have one Button usage in GenDesk field, which makes
++ * hid-input map it to BTN_LEFT; that confuses userspace, which then
++ * considers the device to be a mouse/touchpad instead of touchscreen.
++ */
++ clear_bit(BTN_LEFT, input->keybit);
+ set_bit(BTN_TOUCH, input->keybit);
+ set_bit(ABS_PRESSURE, input->absbit);
+ input_set_abs_params(input, ABS_PRESSURE, 0, 256, 0, 0);
+diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
+index 32d52d29cc68..b4ace7561555 100644
+--- a/drivers/hid/hid-input.c
++++ b/drivers/hid/hid-input.c
+@@ -1128,18 +1128,26 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
+
+ /*
+ * Ignore out-of-range values as per HID specification,
+- * section 5.10 and 6.2.25.
++ * section 5.10 and 6.2.25, when NULL state bit is present.
++ * When it's not, clamp the value to match Microsoft's input
++ * driver as mentioned in "Required HID usages for digitizers":
++ * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
+ *
+ * The logical_minimum < logical_maximum check is done so that we
+ * don't unintentionally discard values sent by devices which
+ * don't specify logical min and max.
+ */
+ if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
+- (field->logical_minimum < field->logical_maximum) &&
+- (value < field->logical_minimum ||
+- value > field->logical_maximum)) {
+- dbg_hid("Ignoring out-of-range value %x\n", value);
+- return;
++ (field->logical_minimum < field->logical_maximum)) {
++ if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
++ (value < field->logical_minimum ||
++ value > field->logical_maximum)) {
++ dbg_hid("Ignoring out-of-range value %x\n", value);
++ return;
++ }
++ value = clamp(value,
++ field->logical_minimum,
++ field->logical_maximum);
+ }
+
+ /*
+diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
+index 9c2d7c23f296..c0c4df198725 100644
+--- a/drivers/hid/hidraw.c
++++ b/drivers/hid/hidraw.c
+@@ -197,6 +197,11 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t
+ int ret = 0, len;
+ unsigned char report_number;
+
++ if (!hidraw_table[minor] || !hidraw_table[minor]->exist) {
++ ret = -ENODEV;
++ goto out;
++ }
++
+ dev = hidraw_table[minor]->hid;
+
+ if (!dev->ll_driver->raw_request) {
+diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
+index a9054be9bca2..fd72f894865d 100644
+--- a/drivers/hid/i2c-hid/i2c-hid.c
++++ b/drivers/hid/i2c-hid/i2c-hid.c
+@@ -137,10 +137,10 @@ struct i2c_hid {
+ * register of the HID
+ * descriptor. */
+ unsigned int bufsize; /* i2c buffer size */
+- char *inbuf; /* Input buffer */
+- char *rawbuf; /* Raw Input buffer */
+- char *cmdbuf; /* Command buffer */
+- char *argsbuf; /* Command arguments buffer */
++ u8 *inbuf; /* Input buffer */
++ u8 *rawbuf; /* Raw Input buffer */
++ u8 *cmdbuf; /* Command buffer */
++ u8 *argsbuf; /* Command arguments buffer */
+
+ unsigned long flags; /* device flags */
+
+@@ -385,7 +385,8 @@ static int i2c_hid_hwreset(struct i2c_client *client)
+
+ static void i2c_hid_get_input(struct i2c_hid *ihid)
+ {
+- int ret, ret_size;
++ int ret;
++ u32 ret_size;
+ int size = le16_to_cpu(ihid->hdesc.wMaxInputLength);
+
+ if (size > ihid->bufsize)
+@@ -410,7 +411,7 @@ static void i2c_hid_get_input(struct i2c_hid *ihid)
+ return;
+ }
+
+- if (ret_size > size) {
++ if ((ret_size > size) || (ret_size <= 2)) {
+ dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
+ __func__, size, ret_size);
+ return;
+diff --git a/drivers/hsi/clients/ssi_protocol.c b/drivers/hsi/clients/ssi_protocol.c
+index e5c7a969f28b..0cb78f30696b 100644
+--- a/drivers/hsi/clients/ssi_protocol.c
++++ b/drivers/hsi/clients/ssi_protocol.c
+@@ -976,7 +976,7 @@ static int ssip_pn_xmit(struct sk_buff *skb, struct net_device *dev)
+ goto drop;
+ /* Pad to 32-bits - FIXME: Revisit*/
+ if ((skb->len & 3) && skb_pad(skb, 4 - (skb->len & 3)))
+- goto drop;
++ goto inc_dropped;
+
+ /*
+ * Modem sends Phonet messages over SSI with its own endianess...
+@@ -1028,8 +1028,9 @@ static int ssip_pn_xmit(struct sk_buff *skb, struct net_device *dev)
+ drop2:
+ hsi_free_msg(msg);
+ drop:
+- dev->stats.tx_dropped++;
+ dev_kfree_skb(skb);
++inc_dropped:
++ dev->stats.tx_dropped++;
+
+ return 0;
+ }
+diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c
+index 3b33af2416bb..12dc09db55e5 100644
+--- a/drivers/hwtracing/coresight/coresight-tpiu.c
++++ b/drivers/hwtracing/coresight/coresight-tpiu.c
+@@ -44,8 +44,11 @@
+ #define TPIU_ITATBCTR0 0xef8
+
+ /** register definition **/
++/* FFSR - 0x300 */
++#define FFSR_FT_STOPPED BIT(1)
+ /* FFCR - 0x304 */
+ #define FFCR_FON_MAN BIT(6)
++#define FFCR_STOP_FI BIT(12)
+
+ /**
+ * @base: memory mapped base address for this component.
+@@ -88,10 +91,14 @@ static void tpiu_disable_hw(struct tpiu_drvdata *drvdata)
+ {
+ CS_UNLOCK(drvdata->base);
+
+- /* Clear formatter controle reg. */
+- writel_relaxed(0x0, drvdata->base + TPIU_FFCR);
++ /* Clear formatter and stop on flush */
++ writel_relaxed(FFCR_STOP_FI, drvdata->base + TPIU_FFCR);
+ /* Generate manual flush */
+- writel_relaxed(FFCR_FON_MAN, drvdata->base + TPIU_FFCR);
++ writel_relaxed(FFCR_STOP_FI | FFCR_FON_MAN, drvdata->base + TPIU_FFCR);
++ /* Wait for flush to complete */
++ coresight_timeout(drvdata->base, TPIU_FFCR, FFCR_FON_MAN, 0);
++ /* Wait for formatter to stop */
++ coresight_timeout(drvdata->base, TPIU_FFSR, FFSR_FT_STOPPED, 1);
+
+ CS_LOCK(drvdata->base);
+ }
+diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c
+index 35e51ce93a5c..62a56654df97 100644
+--- a/drivers/hwtracing/coresight/of_coresight.c
++++ b/drivers/hwtracing/coresight/of_coresight.c
+@@ -150,7 +150,7 @@ struct coresight_platform_data *of_get_coresight_platform_data(
+ continue;
+
+ /* The local out port number */
+- pdata->outports[i] = endpoint.id;
++ pdata->outports[i] = endpoint.port;
+
+ /*
+ * Get a handle on the remote port and parent
+diff --git a/drivers/i2c/busses/i2c-scmi.c b/drivers/i2c/busses/i2c-scmi.c
+index dfc98df7b1b6..7aa7b9cb6203 100644
+--- a/drivers/i2c/busses/i2c-scmi.c
++++ b/drivers/i2c/busses/i2c-scmi.c
+@@ -18,6 +18,9 @@
+ #define ACPI_SMBUS_HC_CLASS "smbus"
+ #define ACPI_SMBUS_HC_DEVICE_NAME "cmi"
+
++/* SMBUS HID definition as supported by Microsoft Windows */
++#define ACPI_SMBUS_MS_HID "SMB0001"
++
+ ACPI_MODULE_NAME("smbus_cmi");
+
+ struct smbus_methods_t {
+@@ -51,6 +54,7 @@ static const struct smbus_methods_t ibm_smbus_methods = {
+ static const struct acpi_device_id acpi_smbus_cmi_ids[] = {
+ {"SMBUS01", (kernel_ulong_t)&smbus_methods},
+ {ACPI_SMBUS_IBM_HID, (kernel_ulong_t)&ibm_smbus_methods},
++ {ACPI_SMBUS_MS_HID, (kernel_ulong_t)&smbus_methods},
+ {"", 0}
+ };
+ MODULE_DEVICE_TABLE(acpi, acpi_smbus_cmi_ids);
+diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
+index 2ae7150442fc..2f94d1164730 100644
+--- a/drivers/iio/accel/st_accel_core.c
++++ b/drivers/iio/accel/st_accel_core.c
+@@ -535,6 +535,8 @@ static const struct iio_trigger_ops st_accel_trigger_ops = {
+ int st_accel_common_probe(struct iio_dev *indio_dev)
+ {
+ struct st_sensor_data *adata = iio_priv(indio_dev);
++ struct st_sensors_platform_data *pdata =
++ (struct st_sensors_platform_data *)adata->dev->platform_data;
+ int irq = adata->get_irq_data_ready(indio_dev);
+ int err;
+
+@@ -559,11 +561,10 @@ int st_accel_common_probe(struct iio_dev *indio_dev)
+ &adata->sensor_settings->fs.fs_avl[0];
+ adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;
+
+- if (!adata->dev->platform_data)
+- adata->dev->platform_data =
+- (struct st_sensors_platform_data *)&default_accel_pdata;
++ if (!pdata)
++ pdata = (struct st_sensors_platform_data *)&default_accel_pdata;
+
+- err = st_sensors_init_sensor(indio_dev, adata->dev->platform_data);
++ err = st_sensors_init_sensor(indio_dev, pdata);
+ if (err < 0)
+ return err;
+
+diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c
+index 7adacf160146..899ed591d666 100644
+--- a/drivers/iio/magnetometer/st_magn_spi.c
++++ b/drivers/iio/magnetometer/st_magn_spi.c
+@@ -48,8 +48,6 @@ static int st_magn_spi_remove(struct spi_device *spi)
+ }
+
+ static const struct spi_device_id st_magn_id_table[] = {
+- { LSM303DLHC_MAGN_DEV_NAME },
+- { LSM303DLM_MAGN_DEV_NAME },
+ { LIS3MDL_MAGN_DEV_NAME },
+ {},
+ };
+diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
+index 1f7f844bc0b8..c80bc75790e7 100644
+--- a/drivers/iio/pressure/st_pressure_core.c
++++ b/drivers/iio/pressure/st_pressure_core.c
+@@ -432,6 +432,8 @@ static const struct iio_trigger_ops st_press_trigger_ops = {
+ int st_press_common_probe(struct iio_dev *indio_dev)
+ {
+ struct st_sensor_data *press_data = iio_priv(indio_dev);
++ struct st_sensors_platform_data *pdata =
++ (struct st_sensors_platform_data *)press_data->dev->platform_data;
+ int irq = press_data->get_irq_data_ready(indio_dev);
+ int err;
+
+@@ -460,12 +462,10 @@ int st_press_common_probe(struct iio_dev *indio_dev)
+ press_data->odr = press_data->sensor_settings->odr.odr_avl[0].hz;
+
+ /* Some devices don't support a data ready pin. */
+- if (!press_data->dev->platform_data &&
+- press_data->sensor_settings->drdy_irq.addr)
+- press_data->dev->platform_data =
+- (struct st_sensors_platform_data *)&default_press_pdata;
++ if (!pdata && press_data->sensor_settings->drdy_irq.addr)
++ pdata = (struct st_sensors_platform_data *)&default_press_pdata;
+
+- err = st_sensors_init_sensor(indio_dev, press_data->dev->platform_data);
++ err = st_sensors_init_sensor(indio_dev, pdata);
+ if (err < 0)
+ return err;
+
+diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
+index 38339d220d7f..33d69b5d70ec 100644
+--- a/drivers/infiniband/core/addr.c
++++ b/drivers/infiniband/core/addr.c
+@@ -86,6 +86,22 @@ int rdma_addr_size(struct sockaddr *addr)
+ }
+ EXPORT_SYMBOL(rdma_addr_size);
+
++int rdma_addr_size_in6(struct sockaddr_in6 *addr)
++{
++ int ret = rdma_addr_size((struct sockaddr *) addr);
++
++ return ret <= sizeof(*addr) ? ret : 0;
++}
++EXPORT_SYMBOL(rdma_addr_size_in6);
++
++int rdma_addr_size_kss(struct __kernel_sockaddr_storage *addr)
++{
++ int ret = rdma_addr_size((struct sockaddr *) addr);
++
++ return ret <= sizeof(*addr) ? ret : 0;
++}
++EXPORT_SYMBOL(rdma_addr_size_kss);
++
+ static struct rdma_addr_client self;
+
+ void rdma_addr_register_client(struct rdma_addr_client *client)
+diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
+index de1c8a78374e..8c89dac48a04 100644
+--- a/drivers/infiniband/core/cma.c
++++ b/drivers/infiniband/core/cma.c
+@@ -3363,6 +3363,9 @@ int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,
+ struct cma_multicast *mc;
+ int ret;
+
++ if (!id->device)
++ return -EINVAL;
++
+ id_priv = container_of(id, struct rdma_id_private, id);
+ if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) &&
+ !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED))
+@@ -3645,7 +3648,7 @@ static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb)
+ RDMA_NL_RDMA_CM_ATTR_SRC_ADDR))
+ goto out;
+ if (ibnl_put_attr(skb, nlh,
+- rdma_addr_size(cma_src_addr(id_priv)),
++ rdma_addr_size(cma_dst_addr(id_priv)),
+ cma_dst_addr(id_priv),
+ RDMA_NL_RDMA_CM_ATTR_DST_ADDR))
+ goto out;
+diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
+index a626795bf9c7..f1c37b7c666f 100644
+--- a/drivers/infiniband/core/iwpm_util.c
++++ b/drivers/infiniband/core/iwpm_util.c
+@@ -654,6 +654,7 @@ int iwpm_send_mapinfo(u8 nl_client, int iwpm_pid)
+ }
+ skb_num++;
+ spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
++ ret = -EINVAL;
+ for (i = 0; i < IWPM_MAPINFO_HASH_SIZE; i++) {
+ hlist_for_each_entry(map_info, &iwpm_hash_bucket[i],
+ hlist_node) {
+diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
+index 9e7dd06031ae..2daae8b758f1 100644
+--- a/drivers/infiniband/core/ucma.c
++++ b/drivers/infiniband/core/ucma.c
+@@ -411,6 +411,9 @@ err1:
+ mutex_lock(&mut);
+ idr_remove(&ctx_idr, ctx->id);
+ mutex_unlock(&mut);
++ mutex_lock(&file->mut);
++ list_del(&ctx->list);
++ mutex_unlock(&file->mut);
+ kfree(ctx);
+ return ret;
+ }
+@@ -522,6 +525,9 @@ static ssize_t ucma_bind_ip(struct ucma_file *file, const char __user *inbuf,
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
++ if (!rdma_addr_size_in6(&cmd.addr))
++ return -EINVAL;
++
+ ctx = ucma_get_ctx(file, cmd.id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+@@ -535,22 +541,21 @@ static ssize_t ucma_bind(struct ucma_file *file, const char __user *inbuf,
+ int in_len, int out_len)
+ {
+ struct rdma_ucm_bind cmd;
+- struct sockaddr *addr;
+ struct ucma_context *ctx;
+ int ret;
+
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
+- addr = (struct sockaddr *) &cmd.addr;
+- if (cmd.reserved || !cmd.addr_size || (cmd.addr_size != rdma_addr_size(addr)))
++ if (cmd.reserved || !cmd.addr_size ||
++ cmd.addr_size != rdma_addr_size_kss(&cmd.addr))
+ return -EINVAL;
+
+ ctx = ucma_get_ctx(file, cmd.id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+- ret = rdma_bind_addr(ctx->cm_id, addr);
++ ret = rdma_bind_addr(ctx->cm_id, (struct sockaddr *) &cmd.addr);
+ ucma_put_ctx(ctx);
+ return ret;
+ }
+@@ -566,13 +571,16 @@ static ssize_t ucma_resolve_ip(struct ucma_file *file,
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
++ if ((cmd.src_addr.sin6_family && !rdma_addr_size_in6(&cmd.src_addr)) ||
++ !rdma_addr_size_in6(&cmd.dst_addr))
++ return -EINVAL;
++
+ ctx = ucma_get_ctx(file, cmd.id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+ ret = rdma_resolve_addr(ctx->cm_id, (struct sockaddr *) &cmd.src_addr,
+- (struct sockaddr *) &cmd.dst_addr,
+- cmd.timeout_ms);
++ (struct sockaddr *) &cmd.dst_addr, cmd.timeout_ms);
+ ucma_put_ctx(ctx);
+ return ret;
+ }
+@@ -582,24 +590,23 @@ static ssize_t ucma_resolve_addr(struct ucma_file *file,
+ int in_len, int out_len)
+ {
+ struct rdma_ucm_resolve_addr cmd;
+- struct sockaddr *src, *dst;
+ struct ucma_context *ctx;
+ int ret;
+
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
+- src = (struct sockaddr *) &cmd.src_addr;
+- dst = (struct sockaddr *) &cmd.dst_addr;
+- if (cmd.reserved || (cmd.src_size && (cmd.src_size != rdma_addr_size(src))) ||
+- !cmd.dst_size || (cmd.dst_size != rdma_addr_size(dst)))
++ if (cmd.reserved ||
++ (cmd.src_size && (cmd.src_size != rdma_addr_size_kss(&cmd.src_addr))) ||
++ !cmd.dst_size || (cmd.dst_size != rdma_addr_size_kss(&cmd.dst_addr)))
+ return -EINVAL;
+
+ ctx = ucma_get_ctx(file, cmd.id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+- ret = rdma_resolve_addr(ctx->cm_id, src, dst, cmd.timeout_ms);
++ ret = rdma_resolve_addr(ctx->cm_id, (struct sockaddr *) &cmd.src_addr,
++ (struct sockaddr *) &cmd.dst_addr, cmd.timeout_ms);
+ ucma_put_ctx(ctx);
+ return ret;
+ }
+@@ -1057,6 +1064,11 @@ static ssize_t ucma_init_qp_attr(struct ucma_file *file,
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
++ if (!ctx->cm_id->device) {
++ ret = -EINVAL;
++ goto out;
++ }
++
+ resp.qp_attr_mask = 0;
+ memset(&qp_attr, 0, sizeof qp_attr);
+ qp_attr.qp_state = cmd.qp_state;
+@@ -1127,6 +1139,9 @@ static int ucma_set_ib_path(struct ucma_context *ctx,
+ if (!optlen)
+ return -EINVAL;
+
++ if (!ctx->cm_id->device)
++ return -EINVAL;
++
+ memset(&sa_path, 0, sizeof(sa_path));
+ sa_path.vlan_id = 0xffff;
+
+@@ -1214,7 +1229,7 @@ static ssize_t ucma_notify(struct ucma_file *file, const char __user *inbuf,
+ {
+ struct rdma_ucm_notify cmd;
+ struct ucma_context *ctx;
+- int ret;
++ int ret = -EINVAL;
+
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+@@ -1223,7 +1238,9 @@ static ssize_t ucma_notify(struct ucma_file *file, const char __user *inbuf,
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+- ret = rdma_notify(ctx->cm_id, (enum ib_event_type) cmd.event);
++ if (ctx->cm_id->device)
++ ret = rdma_notify(ctx->cm_id, (enum ib_event_type)cmd.event);
++
+ ucma_put_ctx(ctx);
+ return ret;
+ }
+@@ -1241,7 +1258,7 @@ static ssize_t ucma_process_join(struct ucma_file *file,
+ return -ENOSPC;
+
+ addr = (struct sockaddr *) &cmd->addr;
+- if (cmd->reserved || !cmd->addr_size || (cmd->addr_size != rdma_addr_size(addr)))
++ if (cmd->reserved || (cmd->addr_size != rdma_addr_size(addr)))
+ return -EINVAL;
+
+ ctx = ucma_get_ctx(file, cmd->id);
+@@ -1300,7 +1317,10 @@ static ssize_t ucma_join_ip_multicast(struct ucma_file *file,
+ join_cmd.response = cmd.response;
+ join_cmd.uid = cmd.uid;
+ join_cmd.id = cmd.id;
+- join_cmd.addr_size = rdma_addr_size((struct sockaddr *) &cmd.addr);
++ join_cmd.addr_size = rdma_addr_size_in6(&cmd.addr);
++ if (!join_cmd.addr_size)
++ return -EINVAL;
++
+ join_cmd.reserved = 0;
+ memcpy(&join_cmd.addr, &cmd.addr, join_cmd.addr_size);
+
+@@ -1316,6 +1336,9 @@ static ssize_t ucma_join_multicast(struct ucma_file *file,
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
++ if (!rdma_addr_size_kss(&cmd.addr))
++ return -EINVAL;
++
+ return ucma_process_join(file, &cmd, out_len);
+ }
+
+diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
+index 38acb3cfc545..bda76b9cf396 100644
+--- a/drivers/infiniband/core/umem.c
++++ b/drivers/infiniband/core/umem.c
+@@ -352,7 +352,7 @@ int ib_umem_copy_from(void *dst, struct ib_umem *umem, size_t offset,
+ return -EINVAL;
+ }
+
+- ret = sg_pcopy_to_buffer(umem->sg_head.sgl, umem->nmap, dst, length,
++ ret = sg_pcopy_to_buffer(umem->sg_head.sgl, umem->npages, dst, length,
+ offset + ib_umem_offset(umem));
+
+ if (ret < 0)
+diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
+index d35f62d4f4c5..5d4ef3567743 100644
+--- a/drivers/infiniband/hw/mlx5/qp.c
++++ b/drivers/infiniband/hw/mlx5/qp.c
+@@ -236,7 +236,11 @@ static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
+ } else {
+ if (ucmd) {
+ qp->rq.wqe_cnt = ucmd->rq_wqe_count;
++ if (ucmd->rq_wqe_shift > BITS_PER_BYTE * sizeof(ucmd->rq_wqe_shift))
++ return -EINVAL;
+ qp->rq.wqe_shift = ucmd->rq_wqe_shift;
++ if ((1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) < qp->wq_sig)
++ return -EINVAL;
+ qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
+ qp->rq.max_post = qp->rq.wqe_cnt;
+ } else {
+diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
+index 48d7ef51aa0c..9b8a2c000280 100644
+--- a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
++++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
+@@ -819,7 +819,7 @@ void ocrdma_add_port_stats(struct ocrdma_dev *dev)
+
+ dev->reset_stats.type = OCRDMA_RESET_STATS;
+ dev->reset_stats.dev = dev;
+- if (!debugfs_create_file("reset_stats", S_IRUSR, dev->dir,
++ if (!debugfs_create_file("reset_stats", 0200, dev->dir,
+ &dev->reset_stats, &ocrdma_dbg_ops))
+ goto err;
+
+diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+index 545c7ef480e8..18f732aa1510 100644
+--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
++++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+@@ -963,6 +963,19 @@ static inline int update_parent_pkey(struct ipoib_dev_priv *priv)
+ */
+ priv->dev->broadcast[8] = priv->pkey >> 8;
+ priv->dev->broadcast[9] = priv->pkey & 0xff;
++
++ /*
++ * Update the broadcast address in the priv->broadcast object,
++ * in case it already exists, otherwise no one will do that.
++ */
++ if (priv->broadcast) {
++ spin_lock_irq(&priv->lock);
++ memcpy(priv->broadcast->mcmember.mgid.raw,
++ priv->dev->broadcast + 4,
++ sizeof(union ib_gid));
++ spin_unlock_irq(&priv->lock);
++ }
++
+ return 0;
+ }
+
+diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
+index 7599fb0b2d98..17a1bb19b8d1 100644
+--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
++++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
+@@ -488,6 +488,22 @@ static void path_rec_completion(int status,
+ spin_lock_irqsave(&priv->lock, flags);
+
+ if (!IS_ERR_OR_NULL(ah)) {
++ /*
++ * pathrec.dgid is used as the database key from the LLADDR,
++ * it must remain unchanged even if the SA returns a different
++ * GID to use in the AH.
++ */
++ if (memcmp(pathrec->dgid.raw, path->pathrec.dgid.raw,
++ sizeof(union ib_gid))) {
++ ipoib_dbg(
++ priv,
++ "%s got PathRec for gid %pI6 while asked for %pI6\n",
++ dev->name, pathrec->dgid.raw,
++ path->pathrec.dgid.raw);
++ memcpy(pathrec->dgid.raw, path->pathrec.dgid.raw,
++ sizeof(union ib_gid));
++ }
++
+ path->pathrec = *pathrec;
+
+ old_ah = path->ah;
+diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
+index 18e688d68e66..d210df3f7188 100644
+--- a/drivers/infiniband/ulp/srp/ib_srp.c
++++ b/drivers/infiniband/ulp/srp/ib_srp.c
+@@ -2510,9 +2510,11 @@ static int srp_abort(struct scsi_cmnd *scmnd)
+ ret = FAST_IO_FAIL;
+ else
+ ret = FAILED;
+- srp_free_req(ch, req, scmnd, 0);
+- scmnd->result = DID_ABORT << 16;
+- scmnd->scsi_done(scmnd);
++ if (ret == SUCCESS) {
++ srp_free_req(ch, req, scmnd, 0);
++ scmnd->result = DID_ABORT << 16;
++ scmnd->scsi_done(scmnd);
++ }
+
+ return ret;
+ }
+@@ -3245,12 +3247,10 @@ static ssize_t srp_create_target(struct device *dev,
+ num_online_nodes());
+ const int ch_end = ((node_idx + 1) * target->ch_count /
+ num_online_nodes());
+- const int cv_start = (node_idx * ibdev->num_comp_vectors /
+- num_online_nodes() + target->comp_vector)
+- % ibdev->num_comp_vectors;
+- const int cv_end = ((node_idx + 1) * ibdev->num_comp_vectors /
+- num_online_nodes() + target->comp_vector)
+- % ibdev->num_comp_vectors;
++ const int cv_start = node_idx * ibdev->num_comp_vectors /
++ num_online_nodes();
++ const int cv_end = (node_idx + 1) * ibdev->num_comp_vectors /
++ num_online_nodes();
+ int cpu_idx = 0;
+
+ for_each_online_cpu(cpu) {
+diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
+index 6c30192dcb78..ee696c6a769d 100644
+--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
++++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
+@@ -2981,12 +2981,8 @@ static void srpt_queue_response(struct se_cmd *cmd)
+ }
+ spin_unlock_irqrestore(&ioctx->spinlock, flags);
+
+- if (unlikely(transport_check_aborted_status(&ioctx->cmd, false)
+- || WARN_ON_ONCE(state == SRPT_STATE_CMD_RSP_SENT))) {
+- atomic_inc(&ch->req_lim_delta);
+- srpt_abort_cmd(ioctx);
++ if (unlikely(WARN_ON_ONCE(state == SRPT_STATE_CMD_RSP_SENT)))
+ return;
+- }
+
+ dir = ioctx->cmd.data_direction;
+
+diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c
+index 009f75d25268..4e5ad9e120d6 100644
+--- a/drivers/input/misc/drv260x.c
++++ b/drivers/input/misc/drv260x.c
+@@ -521,7 +521,7 @@ static int drv260x_probe(struct i2c_client *client,
+ if (!haptics)
+ return -ENOMEM;
+
+- haptics->rated_voltage = DRV260X_DEF_OD_CLAMP_VOLT;
++ haptics->overdrive_voltage = DRV260X_DEF_OD_CLAMP_VOLT;
+ haptics->rated_voltage = DRV260X_DEF_RATED_VOLT;
+
+ if (pdata) {
+diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
+index fd5068b2542d..152d057ed87c 100644
+--- a/drivers/input/mouse/elan_i2c_core.c
++++ b/drivers/input/mouse/elan_i2c_core.c
+@@ -972,6 +972,13 @@ static int elan_probe(struct i2c_client *client,
+ return error;
+ }
+
++ /* Make sure there is something at this address */
++ error = i2c_smbus_read_byte(client);
++ if (error < 0) {
++ dev_dbg(&client->dev, "nothing at this address: %d\n", error);
++ return -ENXIO;
++ }
++
+ /* Initialize the touchpad. */
+ error = elan_initialize(data);
+ if (error)
+diff --git a/drivers/input/mouse/elan_i2c_i2c.c b/drivers/input/mouse/elan_i2c_i2c.c
+index a0acbbf83bfd..4ea436c173be 100644
+--- a/drivers/input/mouse/elan_i2c_i2c.c
++++ b/drivers/input/mouse/elan_i2c_i2c.c
+@@ -555,7 +555,14 @@ static int elan_i2c_finish_fw_update(struct i2c_client *client,
+ long ret;
+ int error;
+ int len;
+- u8 buffer[ETP_I2C_INF_LENGTH];
++ u8 buffer[ETP_I2C_REPORT_LEN];
++
++ len = i2c_master_recv(client, buffer, ETP_I2C_REPORT_LEN);
++ if (len != ETP_I2C_REPORT_LEN) {
++ error = len < 0 ? len : -EIO;
++ dev_warn(dev, "failed to read I2C data after FW WDT reset: %d (%d)\n",
++ error, len);
++ }
+
+ reinit_completion(completion);
+ enable_irq(client->irq);
+diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
+index b604564dec5c..30328e57fdda 100644
+--- a/drivers/input/mousedev.c
++++ b/drivers/input/mousedev.c
+@@ -15,6 +15,7 @@
+ #define MOUSEDEV_MINORS 31
+ #define MOUSEDEV_MIX 63
+
++#include <linux/bitops.h>
+ #include <linux/sched.h>
+ #include <linux/slab.h>
+ #include <linux/poll.h>
+@@ -103,7 +104,7 @@ struct mousedev_client {
+ spinlock_t packet_lock;
+ int pos_x, pos_y;
+
+- signed char ps2[6];
++ u8 ps2[6];
+ unsigned char ready, buffer, bufsiz;
+ unsigned char imexseq, impsseq;
+ enum mousedev_emul mode;
+@@ -291,11 +292,10 @@ static void mousedev_notify_readers(struct mousedev *mousedev,
+ }
+
+ client->pos_x += packet->dx;
+- client->pos_x = client->pos_x < 0 ?
+- 0 : (client->pos_x >= xres ? xres : client->pos_x);
++ client->pos_x = clamp_val(client->pos_x, 0, xres);
++
+ client->pos_y += packet->dy;
+- client->pos_y = client->pos_y < 0 ?
+- 0 : (client->pos_y >= yres ? yres : client->pos_y);
++ client->pos_y = clamp_val(client->pos_y, 0, yres);
+
+ p->dx += packet->dx;
+ p->dy += packet->dy;
+@@ -571,44 +571,50 @@ static int mousedev_open(struct inode *inode, struct file *file)
+ return error;
+ }
+
+-static inline int mousedev_limit_delta(int delta, int limit)
+-{
+- return delta > limit ? limit : (delta < -limit ? -limit : delta);
+-}
+-
+-static void mousedev_packet(struct mousedev_client *client,
+- signed char *ps2_data)
++static void mousedev_packet(struct mousedev_client *client, u8 *ps2_data)
+ {
+ struct mousedev_motion *p = &client->packets[client->tail];
++ s8 dx, dy, dz;
++
++ dx = clamp_val(p->dx, -127, 127);
++ p->dx -= dx;
++
++ dy = clamp_val(p->dy, -127, 127);
++ p->dy -= dy;
+
+- ps2_data[0] = 0x08 |
+- ((p->dx < 0) << 4) | ((p->dy < 0) << 5) | (p->buttons & 0x07);
+- ps2_data[1] = mousedev_limit_delta(p->dx, 127);
+- ps2_data[2] = mousedev_limit_delta(p->dy, 127);
+- p->dx -= ps2_data[1];
+- p->dy -= ps2_data[2];
++ ps2_data[0] = BIT(3);
++ ps2_data[0] |= ((dx & BIT(7)) >> 3) | ((dy & BIT(7)) >> 2);
++ ps2_data[0] |= p->buttons & 0x07;
++ ps2_data[1] = dx;
++ ps2_data[2] = dy;
+
+ switch (client->mode) {
+ case MOUSEDEV_EMUL_EXPS:
+- ps2_data[3] = mousedev_limit_delta(p->dz, 7);
+- p->dz -= ps2_data[3];
+- ps2_data[3] = (ps2_data[3] & 0x0f) | ((p->buttons & 0x18) << 1);
++ dz = clamp_val(p->dz, -7, 7);
++ p->dz -= dz;
++
++ ps2_data[3] = (dz & 0x0f) | ((p->buttons & 0x18) << 1);
+ client->bufsiz = 4;
+ break;
+
+ case MOUSEDEV_EMUL_IMPS:
+- ps2_data[0] |=
+- ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
+- ps2_data[3] = mousedev_limit_delta(p->dz, 127);
+- p->dz -= ps2_data[3];
++ dz = clamp_val(p->dz, -127, 127);
++ p->dz -= dz;
++
++ ps2_data[0] |= ((p->buttons & 0x10) >> 3) |
++ ((p->buttons & 0x08) >> 1);
++ ps2_data[3] = dz;
++
+ client->bufsiz = 4;
+ break;
+
+ case MOUSEDEV_EMUL_PS2:
+ default:
+- ps2_data[0] |=
+- ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
+ p->dz = 0;
++
++ ps2_data[0] |= ((p->buttons & 0x10) >> 3) |
++ ((p->buttons & 0x08) >> 1);
++
+ client->bufsiz = 3;
+ break;
+ }
+@@ -714,7 +720,7 @@ static ssize_t mousedev_read(struct file *file, char __user *buffer,
+ {
+ struct mousedev_client *client = file->private_data;
+ struct mousedev *mousedev = client->mousedev;
+- signed char data[sizeof(client->ps2)];
++ u8 data[sizeof(client->ps2)];
+ int retval = 0;
+
+ if (!client->ready && !client->buffer && mousedev->exist &&
+diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
+index 74d69fdbdec9..10e340943218 100644
+--- a/drivers/input/serio/i8042-x86ia64io.h
++++ b/drivers/input/serio/i8042-x86ia64io.h
+@@ -602,6 +602,13 @@ static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "20046"),
+ },
+ },
++ {
++ /* Lenovo ThinkPad L460 */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L460"),
++ },
++ },
+ {
+ /* Clevo P650RS, 650RP6, Sager NP8152-S, and others */
+ .matches = {
+diff --git a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c
+index f0b954d46a25..b89fbc4d3096 100644
+--- a/drivers/input/touchscreen/ar1021_i2c.c
++++ b/drivers/input/touchscreen/ar1021_i2c.c
+@@ -152,7 +152,7 @@ static int __maybe_unused ar1021_i2c_resume(struct device *dev)
+ static SIMPLE_DEV_PM_OPS(ar1021_i2c_pm, ar1021_i2c_suspend, ar1021_i2c_resume);
+
+ static const struct i2c_device_id ar1021_i2c_id[] = {
+- { "MICROCHIP_AR1021_I2C", 0 },
++ { "ar1021", 0 },
+ { },
+ };
+ MODULE_DEVICE_TABLE(i2c, ar1021_i2c_id);
+diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
+index ccc8aa615709..0299a2882ff7 100644
+--- a/drivers/input/touchscreen/tsc2007.c
++++ b/drivers/input/touchscreen/tsc2007.c
+@@ -455,6 +455,14 @@ static int tsc2007_probe(struct i2c_client *client,
+
+ tsc2007_stop(ts);
+
++ /* power down the chip (TSC2007_SETUP does not ACK on I2C) */
++ err = tsc2007_xfer(ts, PWRDOWN);
++ if (err < 0) {
++ dev_err(&client->dev,
++ "Failed to setup chip: %d\n", err);
++ return err; /* usually, chip does not respond */
++ }
++
+ err = input_register_device(input_dev);
+ if (err) {
+ dev_err(&client->dev,
+diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c
+index 9dd8208312c2..3100bc0cc805 100644
+--- a/drivers/iommu/iova.c
++++ b/drivers/iommu/iova.c
+@@ -163,7 +163,7 @@ static int __alloc_and_insert_iova_range(struct iova_domain *iovad,
+ break; /* found a free slot */
+ }
+ adjust_limit_pfn:
+- limit_pfn = curr_iova->pfn_lo - 1;
++ limit_pfn = curr_iova->pfn_lo ? (curr_iova->pfn_lo - 1) : 0;
+ move_left:
+ prev = curr;
+ curr = rb_prev(curr);
+diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
+index a22c33d6a486..f604a74cc890 100644
+--- a/drivers/iommu/omap-iommu.c
++++ b/drivers/iommu/omap-iommu.c
+@@ -1386,6 +1386,7 @@ static int __init omap_iommu_init(void)
+ const unsigned long flags = SLAB_HWCACHE_ALIGN;
+ size_t align = 1 << 10; /* L2 pagetable alignement */
+ struct device_node *np;
++ int ret;
+
+ np = of_find_matching_node(NULL, omap_iommu_of_match);
+ if (!np)
+@@ -1399,11 +1400,25 @@ static int __init omap_iommu_init(void)
+ return -ENOMEM;
+ iopte_cachep = p;
+
+- bus_set_iommu(&platform_bus_type, &omap_iommu_ops);
+-
+ omap_iommu_debugfs_init();
+
+- return platform_driver_register(&omap_iommu_driver);
++ ret = platform_driver_register(&omap_iommu_driver);
++ if (ret) {
++ pr_err("%s: failed to register driver\n", __func__);
++ goto fail_driver;
++ }
++
++ ret = bus_set_iommu(&platform_bus_type, &omap_iommu_ops);
++ if (ret)
++ goto fail_bus;
++
++ return 0;
++
++fail_bus:
++ platform_driver_unregister(&omap_iommu_driver);
++fail_driver:
++ kmem_cache_destroy(iopte_cachep);
++ return ret;
+ }
+ /* must be ready before omap3isp is probed */
+ subsys_initcall(omap_iommu_init);
+diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
+index 9a791dd52199..eff99f862e83 100644
+--- a/drivers/irqchip/irq-gic-v3-its.c
++++ b/drivers/irqchip/irq-gic-v3-its.c
+@@ -674,7 +674,7 @@ static struct irq_chip its_msi_irq_chip = {
+ * This gives us (((1UL << id_bits) - 8192) >> 5) possible allocations.
+ */
+ #define IRQS_PER_CHUNK_SHIFT 5
+-#define IRQS_PER_CHUNK (1 << IRQS_PER_CHUNK_SHIFT)
++#define IRQS_PER_CHUNK (1UL << IRQS_PER_CHUNK_SHIFT)
+
+ static unsigned long *lpi_bitmap;
+ static u32 lpi_chunks;
+@@ -1145,11 +1145,10 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ /*
+- * At least one bit of EventID is being used, hence a minimum
+- * of two entries. No, the architecture doesn't let you
+- * express an ITT with a single entry.
++ * We allocate at least one chunk worth of LPIs bet device,
++ * and thus that many ITEs. The device may require less though.
+ */
+- nr_ites = max(2UL, roundup_pow_of_two(nvecs));
++ nr_ites = max(IRQS_PER_CHUNK, roundup_pow_of_two(nvecs));
+ sz = nr_ites * its->ite_size;
+ sz = max(sz, ITS_ITT_ALIGN) + ITS_ITT_ALIGN - 1;
+ itt = kzalloc(sz, GFP_KERNEL);
+diff --git a/drivers/isdn/mISDN/stack.c b/drivers/isdn/mISDN/stack.c
+index 9cb4b621fbc3..b92a19a594a1 100644
+--- a/drivers/isdn/mISDN/stack.c
++++ b/drivers/isdn/mISDN/stack.c
+@@ -72,7 +72,7 @@ send_socklist(struct mISDN_sock_list *sl, struct sk_buff *skb)
+ if (sk->sk_state != MISDN_BOUND)
+ continue;
+ if (!cskb)
+- cskb = skb_copy(skb, GFP_KERNEL);
++ cskb = skb_copy(skb, GFP_ATOMIC);
+ if (!cskb) {
+ printk(KERN_WARNING "%s no skb\n", __func__);
+ break;
+diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
+index c3a08b60535b..760deffa9ad3 100644
+--- a/drivers/leds/leds-pca955x.c
++++ b/drivers/leds/leds-pca955x.c
+@@ -281,7 +281,7 @@ static int pca955x_probe(struct i2c_client *client,
+ "slave address 0x%02x\n",
+ id->name, chip->bits, client->addr);
+
+- if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
++ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
+ if (pdata) {
+diff --git a/drivers/md/bcache/alloc.c b/drivers/md/bcache/alloc.c
+index 4d46f2ce606f..aa84fcfd59fc 100644
+--- a/drivers/md/bcache/alloc.c
++++ b/drivers/md/bcache/alloc.c
+@@ -514,15 +514,21 @@ struct open_bucket {
+
+ /*
+ * We keep multiple buckets open for writes, and try to segregate different
+- * write streams for better cache utilization: first we look for a bucket where
+- * the last write to it was sequential with the current write, and failing that
+- * we look for a bucket that was last used by the same task.
++ * write streams for better cache utilization: first we try to segregate flash
++ * only volume write streams from cached devices, secondly we look for a bucket
++ * where the last write to it was sequential with the current write, and
++ * failing that we look for a bucket that was last used by the same task.
+ *
+ * The ideas is if you've got multiple tasks pulling data into the cache at the
+ * same time, you'll get better cache utilization if you try to segregate their
+ * data and preserve locality.
+ *
+- * For example, say you've starting Firefox at the same time you're copying a
++ * For example, dirty sectors of flash only volume is not reclaimable, if their
++ * dirty sectors mixed with dirty sectors of cached device, such buckets will
++ * be marked as dirty and won't be reclaimed, though the dirty data of cached
++ * device have been written back to backend device.
++ *
++ * And say you've starting Firefox at the same time you're copying a
+ * bunch of files. Firefox will likely end up being fairly hot and stay in the
+ * cache awhile, but the data you copied might not be; if you wrote all that
+ * data to the same buckets it'd get invalidated at the same time.
+@@ -539,7 +545,10 @@ static struct open_bucket *pick_data_bucket(struct cache_set *c,
+ struct open_bucket *ret, *ret_task = NULL;
+
+ list_for_each_entry_reverse(ret, &c->data_buckets, list)
+- if (!bkey_cmp(&ret->key, search))
++ if (UUID_FLASH_ONLY(&c->uuids[KEY_INODE(&ret->key)]) !=
++ UUID_FLASH_ONLY(&c->uuids[KEY_INODE(search)]))
++ continue;
++ else if (!bkey_cmp(&ret->key, search))
+ goto found;
+ else if (ret->last_write_point == write_point)
+ ret_task = ret;
+diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
+index b8013e386c76..80812d05b3e2 100644
+--- a/drivers/md/bcache/super.c
++++ b/drivers/md/bcache/super.c
+@@ -921,6 +921,12 @@ static void cached_dev_detach_finish(struct work_struct *w)
+
+ mutex_lock(&bch_register_lock);
+
++ cancel_delayed_work_sync(&dc->writeback_rate_update);
++ if (!IS_ERR_OR_NULL(dc->writeback_thread)) {
++ kthread_stop(dc->writeback_thread);
++ dc->writeback_thread = NULL;
++ }
++
+ memset(&dc->sb.set_uuid, 0, 16);
+ SET_BDEV_STATE(&dc->sb, BDEV_STATE_NONE);
+
+diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
+index df060fd016f6..e8200892ed41 100644
+--- a/drivers/md/dm-ioctl.c
++++ b/drivers/md/dm-ioctl.c
+@@ -1773,12 +1773,12 @@ static int validate_params(uint cmd, struct dm_ioctl *param)
+ cmd == DM_LIST_VERSIONS_CMD)
+ return 0;
+
+- if ((cmd == DM_DEV_CREATE_CMD)) {
++ if (cmd == DM_DEV_CREATE_CMD) {
+ if (!*param->name) {
+ DMWARN("name not supplied when creating device");
+ return -EINVAL;
+ }
+- } else if ((*param->uuid && *param->name)) {
++ } else if (*param->uuid && *param->name) {
+ DMWARN("only supply one of name or uuid, cmd(%u)", cmd);
+ return -EINVAL;
+ }
+diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
+index 4eb5cb18f98d..f490382173b6 100644
+--- a/drivers/md/md-cluster.c
++++ b/drivers/md/md-cluster.c
+@@ -850,8 +850,10 @@ static int add_new_disk_start(struct mddev *mddev, struct md_rdev *rdev)
+ cmsg.raid_slot = rdev->desc_nr;
+ lock_comm(cinfo);
+ ret = __sendmsg(cinfo, &cmsg);
+- if (ret)
++ if (ret) {
++ unlock_comm(cinfo);
+ return ret;
++ }
+ cinfo->no_new_dev_lockres->flags |= DLM_LKF_NOQUEUE;
+ ret = dlm_lock_sync(cinfo->no_new_dev_lockres, DLM_LOCK_EX);
+ cinfo->no_new_dev_lockres->flags &= ~DLM_LKF_NOQUEUE;
+diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
+index 4cbc3df79a2a..641259fe891b 100644
+--- a/drivers/md/raid10.c
++++ b/drivers/md/raid10.c
+@@ -3702,6 +3702,7 @@ static int run(struct mddev *mddev)
+
+ if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
+ discard_supported = true;
++ first = 0;
+ }
+
+ if (mddev->queue) {
+@@ -4110,6 +4111,7 @@ static int raid10_start_reshape(struct mddev *mddev)
+ diff = 0;
+ if (first || diff < min_offset_diff)
+ min_offset_diff = diff;
++ first = 0;
+ }
+ }
+
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index 907aa9c6e894..8de0b1684dc6 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -110,8 +110,7 @@ static inline void unlock_device_hash_lock(struct r5conf *conf, int hash)
+ static inline void lock_all_device_hash_locks_irq(struct r5conf *conf)
+ {
+ int i;
+- local_irq_disable();
+- spin_lock(conf->hash_locks);
++ spin_lock_irq(conf->hash_locks);
+ for (i = 1; i < NR_STRIPE_HASH_LOCKS; i++)
+ spin_lock_nest_lock(conf->hash_locks + i, conf->hash_locks);
+ spin_lock(&conf->device_lock);
+@@ -121,9 +120,9 @@ static inline void unlock_all_device_hash_locks_irq(struct r5conf *conf)
+ {
+ int i;
+ spin_unlock(&conf->device_lock);
+- for (i = NR_STRIPE_HASH_LOCKS; i; i--)
+- spin_unlock(conf->hash_locks + i - 1);
+- local_irq_enable();
++ for (i = NR_STRIPE_HASH_LOCKS - 1; i; i--)
++ spin_unlock(conf->hash_locks + i);
++ spin_unlock_irq(conf->hash_locks);
+ }
+
+ /* bio's attached to a stripe+device for I/O are linked together in bi_sector
+@@ -728,12 +727,11 @@ static bool is_full_stripe_write(struct stripe_head *sh)
+
+ static void lock_two_stripes(struct stripe_head *sh1, struct stripe_head *sh2)
+ {
+- local_irq_disable();
+ if (sh1 > sh2) {
+- spin_lock(&sh2->stripe_lock);
++ spin_lock_irq(&sh2->stripe_lock);
+ spin_lock_nested(&sh1->stripe_lock, 1);
+ } else {
+- spin_lock(&sh1->stripe_lock);
++ spin_lock_irq(&sh1->stripe_lock);
+ spin_lock_nested(&sh2->stripe_lock, 1);
+ }
+ }
+@@ -741,8 +739,7 @@ static void lock_two_stripes(struct stripe_head *sh1, struct stripe_head *sh2)
+ static void unlock_two_stripes(struct stripe_head *sh1, struct stripe_head *sh2)
+ {
+ spin_unlock(&sh1->stripe_lock);
+- spin_unlock(&sh2->stripe_lock);
+- local_irq_enable();
++ spin_unlock_irq(&sh2->stripe_lock);
+ }
+
+ /* Only freshly new full stripe normal write stripe can be added to a batch list */
+@@ -3368,9 +3365,20 @@ static int fetch_block(struct stripe_head *sh, struct stripe_head_state *s,
+ BUG_ON(test_bit(R5_Wantcompute, &dev->flags));
+ BUG_ON(test_bit(R5_Wantread, &dev->flags));
+ BUG_ON(sh->batch_head);
++
++ /*
++ * In the raid6 case if the only non-uptodate disk is P
++ * then we already trusted P to compute the other failed
++ * drives. It is safe to compute rather than re-read P.
++ * In other cases we only compute blocks from failed
++ * devices, otherwise check/repair might fail to detect
++ * a real inconsistency.
++ */
++
+ if ((s->uptodate == disks - 1) &&
++ ((sh->qd_idx >= 0 && sh->pd_idx == disk_idx) ||
+ (s->failed && (disk_idx == s->failed_num[0] ||
+- disk_idx == s->failed_num[1]))) {
++ disk_idx == s->failed_num[1])))) {
+ /* have disk failed, and we're requested to fetch it;
+ * do compute it
+ */
+diff --git a/drivers/media/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb-core/dvb_ca_en50221.c
+index 72937756f60c..c084ad3f2811 100644
+--- a/drivers/media/dvb-core/dvb_ca_en50221.c
++++ b/drivers/media/dvb-core/dvb_ca_en50221.c
+@@ -749,6 +749,29 @@ static int dvb_ca_en50221_write_data(struct dvb_ca_private *ca, int slot, u8 * b
+ goto exit;
+ }
+
++ /*
++ * It may need some time for the CAM to settle down, or there might
++ * be a race condition between the CAM, writing HC and our last
++ * check for DA. This happens, if the CAM asserts DA, just after
++ * checking DA before we are setting HC. In this case it might be
++ * a bug in the CAM to keep the FR bit, the lower layer/HW
++ * communication requires a longer timeout or the CAM needs more
++ * time internally. But this happens in reality!
++ * We need to read the status from the HW again and do the same
++ * we did for the previous check for DA
++ */
++ status = ca->pub->read_cam_control(ca->pub, slot, CTRLIF_STATUS);
++ if (status < 0)
++ goto exit;
++
++ if (status & (STATUSREG_DA | STATUSREG_RE)) {
++ if (status & STATUSREG_DA)
++ dvb_ca_en50221_thread_wakeup(ca);
++
++ status = -EAGAIN;
++ goto exit;
++ }
++
+ /* send the amount of data */
+ if ((status = ca->pub->write_cam_control(ca->pub, slot, CTRLIF_SIZE_HIGH, bytes_write >> 8)) != 0)
+ goto exit;
+diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
+index 391e98395b41..c2cad898072a 100644
+--- a/drivers/media/dvb-frontends/si2168.c
++++ b/drivers/media/dvb-frontends/si2168.c
+@@ -14,6 +14,8 @@
+ * GNU General Public License for more details.
+ */
+
++#include <linux/delay.h>
++
+ #include "si2168_priv.h"
+
+ static const struct dvb_frontend_ops si2168_ops;
+@@ -375,6 +377,7 @@ static int si2168_init(struct dvb_frontend *fe)
+ if (ret)
+ goto err;
+
++ udelay(100);
+ memcpy(cmd.args, "\x85", 1);
+ cmd.wlen = 1;
+ cmd.rlen = 1;
+diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c
+index bd496447749a..8e4eccc1d952 100644
+--- a/drivers/media/i2c/cx25840/cx25840-core.c
++++ b/drivers/media/i2c/cx25840/cx25840-core.c
+@@ -420,11 +420,13 @@ static void cx25840_initialize(struct i2c_client *client)
+ INIT_WORK(&state->fw_work, cx25840_work_handler);
+ init_waitqueue_head(&state->fw_wait);
+ q = create_singlethread_workqueue("cx25840_fw");
+- prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
+- queue_work(q, &state->fw_work);
+- schedule();
+- finish_wait(&state->fw_wait, &wait);
+- destroy_workqueue(q);
++ if (q) {
++ prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
++ queue_work(q, &state->fw_work);
++ schedule();
++ finish_wait(&state->fw_wait, &wait);
++ destroy_workqueue(q);
++ }
+
+ /* 6. */
+ cx25840_write(client, 0x115, 0x8c);
+@@ -631,11 +633,13 @@ static void cx23885_initialize(struct i2c_client *client)
+ INIT_WORK(&state->fw_work, cx25840_work_handler);
+ init_waitqueue_head(&state->fw_wait);
+ q = create_singlethread_workqueue("cx25840_fw");
+- prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
+- queue_work(q, &state->fw_work);
+- schedule();
+- finish_wait(&state->fw_wait, &wait);
+- destroy_workqueue(q);
++ if (q) {
++ prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
++ queue_work(q, &state->fw_work);
++ schedule();
++ finish_wait(&state->fw_wait, &wait);
++ destroy_workqueue(q);
++ }
+
+ /* Call the cx23888 specific std setup func, we no longer rely on
+ * the generic cx24840 func.
+@@ -746,11 +750,13 @@ static void cx231xx_initialize(struct i2c_client *client)
+ INIT_WORK(&state->fw_work, cx25840_work_handler);
+ init_waitqueue_head(&state->fw_wait);
+ q = create_singlethread_workqueue("cx25840_fw");
+- prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
+- queue_work(q, &state->fw_work);
+- schedule();
+- finish_wait(&state->fw_wait, &wait);
+- destroy_workqueue(q);
++ if (q) {
++ prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
++ queue_work(q, &state->fw_work);
++ schedule();
++ finish_wait(&state->fw_wait, &wait);
++ destroy_workqueue(q);
++ }
+
+ cx25840_std_setup(client);
+
+diff --git a/drivers/media/i2c/soc_camera/ov6650.c b/drivers/media/i2c/soc_camera/ov6650.c
+index f4eef2fa6f6f..cd8f8151d834 100644
+--- a/drivers/media/i2c/soc_camera/ov6650.c
++++ b/drivers/media/i2c/soc_camera/ov6650.c
+@@ -1016,7 +1016,7 @@ static int ov6650_probe(struct i2c_client *client,
+ priv->code = MEDIA_BUS_FMT_YUYV8_2X8;
+ priv->colorspace = V4L2_COLORSPACE_JPEG;
+
+- priv->clk = v4l2_clk_get(&client->dev, "mclk");
++ priv->clk = v4l2_clk_get(&client->dev, NULL);
+ if (IS_ERR(priv->clk)) {
+ ret = PTR_ERR(priv->clk);
+ goto eclkget;
+diff --git a/drivers/media/pci/bt8xx/bt878.c b/drivers/media/pci/bt8xx/bt878.c
+index 8aa726651630..90fcccc05b56 100644
+--- a/drivers/media/pci/bt8xx/bt878.c
++++ b/drivers/media/pci/bt8xx/bt878.c
+@@ -422,8 +422,7 @@ static int bt878_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
+ bt878_num);
+ if (bt878_num >= BT878_MAX) {
+ printk(KERN_ERR "bt878: Too many devices inserted\n");
+- result = -ENOMEM;
+- goto fail0;
++ return -ENOMEM;
+ }
+ if (pci_enable_device(dev))
+ return -EIO;
+diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
+index f838d9c7ed12..0fba4a2c1602 100644
+--- a/drivers/media/rc/mceusb.c
++++ b/drivers/media/rc/mceusb.c
+@@ -1370,8 +1370,13 @@ static int mceusb_dev_probe(struct usb_interface *intf,
+ goto rc_dev_fail;
+
+ /* wire up inbound data handler */
+- usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
+- mceusb_dev_recv, ir, ep_in->bInterval);
++ if (usb_endpoint_xfer_int(ep_in))
++ usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
++ mceusb_dev_recv, ir, ep_in->bInterval);
++ else
++ usb_fill_bulk_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
++ mceusb_dev_recv, ir);
++
+ ir->urb_in->transfer_dma = ir->dma_in;
+ ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+diff --git a/drivers/media/usb/cpia2/cpia2_v4l.c b/drivers/media/usb/cpia2/cpia2_v4l.c
+index 9caea8344547..d793c630f1dd 100644
+--- a/drivers/media/usb/cpia2/cpia2_v4l.c
++++ b/drivers/media/usb/cpia2/cpia2_v4l.c
+@@ -812,7 +812,7 @@ static int cpia2_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf)
+ struct camera_data *cam = video_drvdata(file);
+
+ if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+- buf->index > cam->num_frames)
++ buf->index >= cam->num_frames)
+ return -EINVAL;
+
+ buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
+@@ -863,7 +863,7 @@ static int cpia2_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
+
+ if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+ buf->memory != V4L2_MEMORY_MMAP ||
+- buf->index > cam->num_frames)
++ buf->index >= cam->num_frames)
+ return -EINVAL;
+
+ DBG("QBUF #%d\n", buf->index);
+diff --git a/drivers/media/usb/usbtv/usbtv-core.c b/drivers/media/usb/usbtv/usbtv-core.c
+index 3bbc77aa6a33..483457d4904f 100644
+--- a/drivers/media/usb/usbtv/usbtv-core.c
++++ b/drivers/media/usb/usbtv/usbtv-core.c
+@@ -95,6 +95,8 @@ static int usbtv_probe(struct usb_interface *intf,
+ return 0;
+
+ usbtv_audio_fail:
++ /* we must not free at this point */
++ usb_get_dev(usbtv->udev);
+ usbtv_video_free(usbtv);
+
+ usbtv_video_fail:
+diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+index e03aa0961360..0686cbc94675 100644
+--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
++++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+@@ -101,7 +101,7 @@ static int get_v4l2_window32(struct v4l2_window __user *kp,
+ static int put_v4l2_window32(struct v4l2_window __user *kp,
+ struct v4l2_window32 __user *up)
+ {
+- struct v4l2_clip __user *kclips = kp->clips;
++ struct v4l2_clip __user *kclips;
+ struct v4l2_clip32 __user *uclips;
+ compat_caddr_t p;
+ u32 clipcount;
+@@ -116,6 +116,8 @@ static int put_v4l2_window32(struct v4l2_window __user *kp,
+ if (!clipcount)
+ return 0;
+
++ if (get_user(kclips, &kp->clips))
++ return -EFAULT;
+ if (get_user(p, &up->clips))
+ return -EFAULT;
+ uclips = compat_ptr(p);
+diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c
+index 28cb048f4760..907247bc2501 100644
+--- a/drivers/mfd/palmas.c
++++ b/drivers/mfd/palmas.c
+@@ -430,6 +430,20 @@ static void palmas_power_off(void)
+ {
+ unsigned int addr;
+ int ret, slave;
++ struct device_node *np = palmas_dev->dev->of_node;
++
++ if (of_property_read_bool(np, "ti,palmas-override-powerhold")) {
++ addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
++ PALMAS_PRIMARY_SECONDARY_PAD2);
++ slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
++
++ ret = regmap_update_bits(palmas_dev->regmap[slave], addr,
++ PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK, 0);
++ if (ret)
++ dev_err(palmas_dev->dev,
++ "Unable to write PRIMARY_SECONDARY_PAD2 %d\n",
++ ret);
++ }
+
+ if (!palmas_dev)
+ return;
+diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c
+index cc91f7b3d90c..eb29113e0bac 100644
+--- a/drivers/misc/enclosure.c
++++ b/drivers/misc/enclosure.c
+@@ -148,7 +148,7 @@ enclosure_register(struct device *dev, const char *name, int components,
+ for (i = 0; i < components; i++) {
+ edev->component[i].number = -1;
+ edev->component[i].slot = -1;
+- edev->component[i].power_status = 1;
++ edev->component[i].power_status = -1;
+ }
+
+ mutex_lock(&container_list_lock);
+@@ -600,6 +600,11 @@ static ssize_t get_component_power_status(struct device *cdev,
+
+ if (edev->cb->get_power_status)
+ edev->cb->get_power_status(edev, ecomp);
++
++ /* If still uninitialized, the callback failed or does not exist. */
++ if (ecomp->power_status == -1)
++ return (edev->cb->get_power_status) ? -EIO : -ENOTTY;
++
+ return snprintf(buf, 40, "%s\n", ecomp->power_status ? "on" : "off");
+ }
+
+diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
+index e40bcd03bd47..2353ec9dd7d2 100644
+--- a/drivers/misc/mei/main.c
++++ b/drivers/misc/mei/main.c
+@@ -503,7 +503,6 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
+ break;
+
+ default:
+- dev_err(dev->dev, ": unsupported ioctl %d.\n", cmd);
+ rets = -ENOIOCTLCMD;
+ }
+
+diff --git a/drivers/misc/vmw_vmci/vmci_queue_pair.c b/drivers/misc/vmw_vmci/vmci_queue_pair.c
+index f42d9c4e4561..cc277f7849b0 100644
+--- a/drivers/misc/vmw_vmci/vmci_queue_pair.c
++++ b/drivers/misc/vmw_vmci/vmci_queue_pair.c
+@@ -298,8 +298,11 @@ static void *qp_alloc_queue(u64 size, u32 flags)
+ size_t pas_size;
+ size_t vas_size;
+ size_t queue_size = sizeof(*queue) + sizeof(*queue->kernel_if);
+- const u64 num_pages = DIV_ROUND_UP(size, PAGE_SIZE) + 1;
++ u64 num_pages;
+
++ if (size > SIZE_MAX - PAGE_SIZE)
++ return NULL;
++ num_pages = DIV_ROUND_UP(size, PAGE_SIZE) + 1;
+ if (num_pages >
+ (SIZE_MAX - queue_size) /
+ (sizeof(*queue->kernel_if->u.g.pas) +
+@@ -624,9 +627,12 @@ static struct vmci_queue *qp_host_alloc_queue(u64 size)
+ {
+ struct vmci_queue *queue;
+ size_t queue_page_size;
+- const u64 num_pages = DIV_ROUND_UP(size, PAGE_SIZE) + 1;
++ u64 num_pages;
+ const size_t queue_size = sizeof(*queue) + sizeof(*(queue->kernel_if));
+
++ if (size > SIZE_MAX - PAGE_SIZE)
++ return NULL;
++ num_pages = DIV_ROUND_UP(size, PAGE_SIZE) + 1;
+ if (num_pages > (SIZE_MAX - queue_size) /
+ sizeof(*queue->kernel_if->u.h.page))
+ return NULL;
+diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
+index b5d8906ac34f..9368d49d3e83 100644
+--- a/drivers/mmc/core/core.c
++++ b/drivers/mmc/core/core.c
+@@ -2668,6 +2668,14 @@ int mmc_pm_notify(struct notifier_block *notify_block,
+ if (!err)
+ break;
+
++ if (!mmc_card_is_removable(host)) {
++ dev_warn(mmc_dev(host),
++ "pre_suspend failed for non-removable host: "
++ "%d\n", err);
++ /* Avoid removing non-removable hosts */
++ break;
++ }
++
+ /* Calling bus_ops->remove() with a claimed host can deadlock */
+ host->bus_ops->remove(host);
+ mmc_claim_host(host);
+diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c
+index 76e8bce6f46e..ad572a0f2124 100644
+--- a/drivers/mmc/host/jz4740_mmc.c
++++ b/drivers/mmc/host/jz4740_mmc.c
+@@ -368,9 +368,9 @@ static void jz4740_mmc_set_irq_enabled(struct jz4740_mmc_host *host,
+ host->irq_mask &= ~irq;
+ else
+ host->irq_mask |= irq;
+- spin_unlock_irqrestore(&host->lock, flags);
+
+ writew(host->irq_mask, host->base + JZ_REG_MMC_IMASK);
++ spin_unlock_irqrestore(&host->lock, flags);
+ }
+
+ static void jz4740_mmc_clock_enable(struct jz4740_mmc_host *host,
+diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
+index d0abdffb0d7c..18b716bb5752 100644
+--- a/drivers/mmc/host/omap_hsmmc.c
++++ b/drivers/mmc/host/omap_hsmmc.c
+@@ -1693,8 +1693,8 @@ static int omap_hsmmc_configure_wake_irq(struct omap_hsmmc_host *host)
+ */
+ if (host->pdata->controller_flags & OMAP_HSMMC_SWAKEUP_MISSING) {
+ struct pinctrl *p = devm_pinctrl_get(host->dev);
+- if (!p) {
+- ret = -ENODEV;
++ if (IS_ERR(p)) {
++ ret = PTR_ERR(p);
+ goto err_free_irq;
+ }
+ if (IS_ERR(pinctrl_lookup_state(p, PINCTRL_STATE_DEFAULT))) {
+diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
+index 286b97a304cf..4509ee0b294a 100644
+--- a/drivers/mtd/chips/cfi_cmdset_0001.c
++++ b/drivers/mtd/chips/cfi_cmdset_0001.c
+@@ -45,6 +45,7 @@
+ #define I82802AB 0x00ad
+ #define I82802AC 0x00ac
+ #define PF38F4476 0x881c
++#define M28F00AP30 0x8963
+ /* STMicroelectronics chips */
+ #define M50LPW080 0x002F
+ #define M50FLW080A 0x0080
+@@ -375,6 +376,17 @@ static void cfi_fixup_major_minor(struct cfi_private *cfi,
+ extp->MinorVersion = '1';
+ }
+
++static int cfi_is_micron_28F00AP30(struct cfi_private *cfi, struct flchip *chip)
++{
++ /*
++ * Micron(was Numonyx) 1Gbit bottom boot are buggy w.r.t
++ * Erase Supend for their small Erase Blocks(0x8000)
++ */
++ if (cfi->mfr == CFI_MFR_INTEL && cfi->id == M28F00AP30)
++ return 1;
++ return 0;
++}
++
+ static inline struct cfi_pri_intelext *
+ read_pri_intelext(struct map_info *map, __u16 adr)
+ {
+@@ -825,21 +837,30 @@ static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long
+ (mode == FL_WRITING && (cfip->SuspendCmdSupport & 1))))
+ goto sleep;
+
++ /* Do not allow suspend iff read/write to EB address */
++ if ((adr & chip->in_progress_block_mask) ==
++ chip->in_progress_block_addr)
++ goto sleep;
++
++ /* do not suspend small EBs, buggy Micron Chips */
++ if (cfi_is_micron_28F00AP30(cfi, chip) &&
++ (chip->in_progress_block_mask == ~(0x8000-1)))
++ goto sleep;
+
+ /* Erase suspend */
+- map_write(map, CMD(0xB0), adr);
++ map_write(map, CMD(0xB0), chip->in_progress_block_addr);
+
+ /* If the flash has finished erasing, then 'erase suspend'
+ * appears to make some (28F320) flash devices switch to
+ * 'read' mode. Make sure that we switch to 'read status'
+ * mode so we get the right data. --rmk
+ */
+- map_write(map, CMD(0x70), adr);
++ map_write(map, CMD(0x70), chip->in_progress_block_addr);
+ chip->oldstate = FL_ERASING;
+ chip->state = FL_ERASE_SUSPENDING;
+ chip->erase_suspended = 1;
+ for (;;) {
+- status = map_read(map, adr);
++ status = map_read(map, chip->in_progress_block_addr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
+ break;
+
+@@ -1035,8 +1056,8 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad
+ sending the 0x70 (Read Status) command to an erasing
+ chip and expecting it to be ignored, that's what we
+ do. */
+- map_write(map, CMD(0xd0), adr);
+- map_write(map, CMD(0x70), adr);
++ map_write(map, CMD(0xd0), chip->in_progress_block_addr);
++ map_write(map, CMD(0x70), chip->in_progress_block_addr);
+ chip->oldstate = FL_READY;
+ chip->state = FL_ERASING;
+ break;
+@@ -1927,6 +1948,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
+ map_write(map, CMD(0xD0), adr);
+ chip->state = FL_ERASING;
+ chip->erase_suspended = 0;
++ chip->in_progress_block_addr = adr;
++ chip->in_progress_block_mask = ~(len - 1);
+
+ ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
+ adr, len,
+diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
+index c50d8cf0f60d..16faa97ac3f2 100644
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -814,9 +814,10 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
+ (mode == FL_WRITING && (cfip->EraseSuspend & 0x2))))
+ goto sleep;
+
+- /* We could check to see if we're trying to access the sector
+- * that is currently being erased. However, no user will try
+- * anything like that so we just wait for the timeout. */
++ /* Do not allow suspend iff read/write to EB address */
++ if ((adr & chip->in_progress_block_mask) ==
++ chip->in_progress_block_addr)
++ goto sleep;
+
+ /* Erase suspend */
+ /* It's harmless to issue the Erase-Suspend and Erase-Resume
+@@ -2265,6 +2266,7 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip)
+ chip->state = FL_ERASING;
+ chip->erase_suspended = 0;
+ chip->in_progress_block_addr = adr;
++ chip->in_progress_block_mask = ~(map->size - 1);
+
+ INVALIDATE_CACHE_UDELAY(map, chip,
+ adr, map->size,
+@@ -2354,6 +2356,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
+ chip->state = FL_ERASING;
+ chip->erase_suspended = 0;
+ chip->in_progress_block_addr = adr;
++ chip->in_progress_block_mask = ~(len - 1);
+
+ INVALIDATE_CACHE_UDELAY(map, chip,
+ adr, len,
+diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c
+index 7c0b27d132b1..b479bd81120b 100644
+--- a/drivers/mtd/chips/jedec_probe.c
++++ b/drivers/mtd/chips/jedec_probe.c
+@@ -1889,6 +1889,8 @@ static inline u32 jedec_read_mfr(struct map_info *map, uint32_t base,
+ do {
+ uint32_t ofs = cfi_build_cmd_addr(0 + (bank << 8), map, cfi);
+ mask = (1 << (cfi->device_type * 8)) - 1;
++ if (ofs >= map->size)
++ return 0;
+ result = map_read(map, base + ofs);
+ bank++;
+ } while ((result.x[0] & mask) == CFI_MFR_CONTINUATION);
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index 14a5f559e300..eb5ff54c9263 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -618,7 +618,8 @@ static void nand_command(struct mtd_info *mtd, unsigned int command,
+ chip->cmd_ctrl(mtd, readcmd, ctrl);
+ ctrl &= ~NAND_CTRL_CHANGE;
+ }
+- chip->cmd_ctrl(mtd, command, ctrl);
++ if (command != NAND_CMD_NONE)
++ chip->cmd_ctrl(mtd, command, ctrl);
+
+ /* Address cycle, when necessary */
+ ctrl = NAND_CTRL_ALE | NAND_CTRL_CHANGE;
+@@ -647,6 +648,7 @@ static void nand_command(struct mtd_info *mtd, unsigned int command,
+ */
+ switch (command) {
+
++ case NAND_CMD_NONE:
+ case NAND_CMD_PAGEPROG:
+ case NAND_CMD_ERASE1:
+ case NAND_CMD_ERASE2:
+@@ -709,7 +711,9 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command,
+ }
+
+ /* Command latch cycle */
+- chip->cmd_ctrl(mtd, command, NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
++ if (command != NAND_CMD_NONE)
++ chip->cmd_ctrl(mtd, command,
++ NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
+
+ if (column != -1 || page_addr != -1) {
+ int ctrl = NAND_CTRL_CHANGE | NAND_NCE | NAND_ALE;
+@@ -742,6 +746,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command,
+ */
+ switch (command) {
+
++ case NAND_CMD_NONE:
+ case NAND_CMD_CACHEDPROG:
+ case NAND_CMD_PAGEPROG:
+ case NAND_CMD_ERASE1:
+diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
+index c9eb78f10a0d..421ae660d579 100644
+--- a/drivers/mtd/ubi/block.c
++++ b/drivers/mtd/ubi/block.c
+@@ -241,7 +241,7 @@ static int ubiblock_open(struct block_device *bdev, fmode_t mode)
+ * in any case.
+ */
+ if (mode & FMODE_WRITE) {
+- ret = -EPERM;
++ ret = -EROFS;
+ goto out_unlock;
+ }
+
+diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
+index 9fd4f7838080..db6957a2b011 100644
+--- a/drivers/mtd/ubi/build.c
++++ b/drivers/mtd/ubi/build.c
+@@ -907,6 +907,17 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
+ return -EINVAL;
+ }
+
++ /*
++ * Both UBI and UBIFS have been designed for SLC NAND and NOR flashes.
++ * MLC NAND is different and needs special care, otherwise UBI or UBIFS
++ * will die soon and you will lose all your data.
++ */
++ if (mtd->type == MTD_MLCNANDFLASH) {
++ pr_err("ubi: refuse attaching mtd%d - MLC NAND is not supported\n",
++ mtd->index);
++ return -EINVAL;
++ }
++
+ if (ubi_num == UBI_DEV_NUM_AUTO) {
+ /* Search for an empty slot in the @ubi_devices array */
+ for (ubi_num = 0; ubi_num < UBI_MAX_DEVICES; ubi_num++)
+diff --git a/drivers/mtd/ubi/fastmap-wl.c b/drivers/mtd/ubi/fastmap-wl.c
+index b2a665398bca..4c1d12bacfd0 100644
+--- a/drivers/mtd/ubi/fastmap-wl.c
++++ b/drivers/mtd/ubi/fastmap-wl.c
+@@ -331,7 +331,6 @@ static void ubi_fastmap_close(struct ubi_device *ubi)
+ {
+ int i;
+
+- flush_work(&ubi->fm_work);
+ return_unused_pool_pebs(ubi, &ubi->fm_pool);
+ return_unused_pool_pebs(ubi, &ubi->fm_wl_pool);
+
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index 16f9c742bc30..32fe93a2d73e 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -1476,39 +1476,6 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
+ goto err_close;
+ }
+
+- /* If the mode uses primary, then the following is handled by
+- * bond_change_active_slave().
+- */
+- if (!bond_uses_primary(bond)) {
+- /* set promiscuity level to new slave */
+- if (bond_dev->flags & IFF_PROMISC) {
+- res = dev_set_promiscuity(slave_dev, 1);
+- if (res)
+- goto err_close;
+- }
+-
+- /* set allmulti level to new slave */
+- if (bond_dev->flags & IFF_ALLMULTI) {
+- res = dev_set_allmulti(slave_dev, 1);
+- if (res)
+- goto err_close;
+- }
+-
+- netif_addr_lock_bh(bond_dev);
+-
+- dev_mc_sync_multiple(slave_dev, bond_dev);
+- dev_uc_sync_multiple(slave_dev, bond_dev);
+-
+- netif_addr_unlock_bh(bond_dev);
+- }
+-
+- if (BOND_MODE(bond) == BOND_MODE_8023AD) {
+- /* add lacpdu mc addr to mc list */
+- u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR;
+-
+- dev_mc_add(slave_dev, lacpdu_multicast);
+- }
+-
+ res = vlan_vids_add_by_dev(slave_dev, bond_dev);
+ if (res) {
+ netdev_err(bond_dev, "Couldn't add bond vlan ids to %s\n",
+@@ -1633,8 +1600,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
+ } /* switch(bond_mode) */
+
+ #ifdef CONFIG_NET_POLL_CONTROLLER
+- slave_dev->npinfo = bond->dev->npinfo;
+- if (slave_dev->npinfo) {
++ if (bond->dev->npinfo) {
+ if (slave_enable_netpoll(new_slave)) {
+ netdev_info(bond_dev, "master_dev is using netpoll, but new slave device does not support netpoll\n");
+ res = -EBUSY;
+@@ -1665,6 +1631,40 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
+ goto err_upper_unlink;
+ }
+
++ /* If the mode uses primary, then the following is handled by
++ * bond_change_active_slave().
++ */
++ if (!bond_uses_primary(bond)) {
++ /* set promiscuity level to new slave */
++ if (bond_dev->flags & IFF_PROMISC) {
++ res = dev_set_promiscuity(slave_dev, 1);
++ if (res)
++ goto err_sysfs_del;
++ }
++
++ /* set allmulti level to new slave */
++ if (bond_dev->flags & IFF_ALLMULTI) {
++ res = dev_set_allmulti(slave_dev, 1);
++ if (res) {
++ if (bond_dev->flags & IFF_PROMISC)
++ dev_set_promiscuity(slave_dev, -1);
++ goto err_sysfs_del;
++ }
++ }
++
++ netif_addr_lock_bh(bond_dev);
++ dev_mc_sync_multiple(slave_dev, bond_dev);
++ dev_uc_sync_multiple(slave_dev, bond_dev);
++ netif_addr_unlock_bh(bond_dev);
++
++ if (BOND_MODE(bond) == BOND_MODE_8023AD) {
++ /* add lacpdu mc addr to mc list */
++ u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR;
++
++ dev_mc_add(slave_dev, lacpdu_multicast);
++ }
++ }
++
+ bond->slave_cnt++;
+ bond_compute_features(bond);
+ bond_set_carrier(bond);
+@@ -1688,6 +1688,9 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
+ return 0;
+
+ /* Undo stages on error */
++err_sysfs_del:
++ bond_sysfs_slave_del(new_slave);
++
+ err_upper_unlink:
+ bond_upper_dev_unlink(bond_dev, slave_dev);
+
+@@ -1695,9 +1698,6 @@ err_unregister:
+ netdev_rx_handler_unregister(slave_dev);
+
+ err_detach:
+- if (!bond_uses_primary(bond))
+- bond_hw_addr_flush(bond_dev, slave_dev);
+-
+ vlan_vids_del_by_dev(slave_dev, bond_dev);
+ if (rcu_access_pointer(bond->primary_slave) == new_slave)
+ RCU_INIT_POINTER(bond->primary_slave, NULL);
+@@ -2533,11 +2533,13 @@ static void bond_loadbalance_arp_mon(struct work_struct *work)
+ bond_for_each_slave_rcu(bond, slave, iter) {
+ unsigned long trans_start = dev_trans_start(slave->dev);
+
++ slave->new_link = BOND_LINK_NOCHANGE;
++
+ if (slave->link != BOND_LINK_UP) {
+ if (bond_time_in_interval(bond, trans_start, 1) &&
+ bond_time_in_interval(bond, slave->last_rx, 1)) {
+
+- slave->link = BOND_LINK_UP;
++ slave->new_link = BOND_LINK_UP;
+ slave_state_changed = 1;
+
+ /* primary_slave has no meaning in round-robin
+@@ -2564,7 +2566,7 @@ static void bond_loadbalance_arp_mon(struct work_struct *work)
+ if (!bond_time_in_interval(bond, trans_start, 2) ||
+ !bond_time_in_interval(bond, slave->last_rx, 2)) {
+
+- slave->link = BOND_LINK_DOWN;
++ slave->new_link = BOND_LINK_DOWN;
+ slave_state_changed = 1;
+
+ if (slave->link_failure_count < UINT_MAX)
+@@ -2595,6 +2597,11 @@ static void bond_loadbalance_arp_mon(struct work_struct *work)
+ if (!rtnl_trylock())
+ goto re_arm;
+
++ bond_for_each_slave(bond, slave, iter) {
++ if (slave->new_link != BOND_LINK_NOCHANGE)
++ slave->link = slave->new_link;
++ }
++
+ if (slave_state_changed) {
+ bond_slave_state_change(bond);
+ if (BOND_MODE(bond) == BOND_MODE_XOR)
+@@ -3261,12 +3268,17 @@ static void bond_fold_stats(struct rtnl_link_stats64 *_res,
+ for (i = 0; i < sizeof(*_res) / sizeof(u64); i++) {
+ u64 nv = new[i];
+ u64 ov = old[i];
++ s64 delta = nv - ov;
+
+ /* detects if this particular field is 32bit only */
+ if (((nv | ov) >> 32) == 0)
+- res[i] += (u32)nv - (u32)ov;
+- else
+- res[i] += nv - ov;
++ delta = (s64)(s32)((u32)nv - (u32)ov);
++
++ /* filter anomalies, some drivers reset their stats
++ * at down/up events.
++ */
++ if (delta > 0)
++ res[i] += delta;
+ }
+ }
+
+diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c
+index c11d44984036..76b3c1462139 100644
+--- a/drivers/net/can/cc770/cc770.c
++++ b/drivers/net/can/cc770/cc770.c
+@@ -390,37 +390,23 @@ static int cc770_get_berr_counter(const struct net_device *dev,
+ return 0;
+ }
+
+-static netdev_tx_t cc770_start_xmit(struct sk_buff *skb, struct net_device *dev)
++static void cc770_tx(struct net_device *dev, int mo)
+ {
+ struct cc770_priv *priv = netdev_priv(dev);
+- struct net_device_stats *stats = &dev->stats;
+- struct can_frame *cf = (struct can_frame *)skb->data;
+- unsigned int mo = obj2msgobj(CC770_OBJ_TX);
++ struct can_frame *cf = (struct can_frame *)priv->tx_skb->data;
+ u8 dlc, rtr;
+ u32 id;
+ int i;
+
+- if (can_dropped_invalid_skb(dev, skb))
+- return NETDEV_TX_OK;
+-
+- if ((cc770_read_reg(priv,
+- msgobj[mo].ctrl1) & TXRQST_UNC) == TXRQST_SET) {
+- netdev_err(dev, "TX register is still occupied!\n");
+- return NETDEV_TX_BUSY;
+- }
+-
+- netif_stop_queue(dev);
+-
+ dlc = cf->can_dlc;
+ id = cf->can_id;
+- if (cf->can_id & CAN_RTR_FLAG)
+- rtr = 0;
+- else
+- rtr = MSGCFG_DIR;
++ rtr = cf->can_id & CAN_RTR_FLAG ? 0 : MSGCFG_DIR;
++
++ cc770_write_reg(priv, msgobj[mo].ctrl0,
++ MSGVAL_RES | TXIE_RES | RXIE_RES | INTPND_RES);
+ cc770_write_reg(priv, msgobj[mo].ctrl1,
+ RMTPND_RES | TXRQST_RES | CPUUPD_SET | NEWDAT_RES);
+- cc770_write_reg(priv, msgobj[mo].ctrl0,
+- MSGVAL_SET | TXIE_SET | RXIE_RES | INTPND_RES);
++
+ if (id & CAN_EFF_FLAG) {
+ id &= CAN_EFF_MASK;
+ cc770_write_reg(priv, msgobj[mo].config,
+@@ -439,22 +425,30 @@ static netdev_tx_t cc770_start_xmit(struct sk_buff *skb, struct net_device *dev)
+ for (i = 0; i < dlc; i++)
+ cc770_write_reg(priv, msgobj[mo].data[i], cf->data[i]);
+
+- /* Store echo skb before starting the transfer */
+- can_put_echo_skb(skb, dev, 0);
+-
+ cc770_write_reg(priv, msgobj[mo].ctrl1,
+- RMTPND_RES | TXRQST_SET | CPUUPD_RES | NEWDAT_UNC);
++ RMTPND_UNC | TXRQST_SET | CPUUPD_RES | NEWDAT_UNC);
++ cc770_write_reg(priv, msgobj[mo].ctrl0,
++ MSGVAL_SET | TXIE_SET | RXIE_SET | INTPND_UNC);
++}
+
+- stats->tx_bytes += dlc;
++static netdev_tx_t cc770_start_xmit(struct sk_buff *skb, struct net_device *dev)
++{
++ struct cc770_priv *priv = netdev_priv(dev);
++ unsigned int mo = obj2msgobj(CC770_OBJ_TX);
+
++ if (can_dropped_invalid_skb(dev, skb))
++ return NETDEV_TX_OK;
+
+- /*
+- * HM: We had some cases of repeated IRQs so make sure the
+- * INT is acknowledged I know it's already further up, but
+- * doing again fixed the issue
+- */
+- cc770_write_reg(priv, msgobj[mo].ctrl0,
+- MSGVAL_UNC | TXIE_UNC | RXIE_UNC | INTPND_RES);
++ netif_stop_queue(dev);
++
++ if ((cc770_read_reg(priv,
++ msgobj[mo].ctrl1) & TXRQST_UNC) == TXRQST_SET) {
++ netdev_err(dev, "TX register is still occupied!\n");
++ return NETDEV_TX_BUSY;
++ }
++
++ priv->tx_skb = skb;
++ cc770_tx(dev, mo);
+
+ return NETDEV_TX_OK;
+ }
+@@ -680,19 +674,46 @@ static void cc770_tx_interrupt(struct net_device *dev, unsigned int o)
+ struct cc770_priv *priv = netdev_priv(dev);
+ struct net_device_stats *stats = &dev->stats;
+ unsigned int mo = obj2msgobj(o);
++ struct can_frame *cf;
++ u8 ctrl1;
++
++ ctrl1 = cc770_read_reg(priv, msgobj[mo].ctrl1);
+
+- /* Nothing more to send, switch off interrupts */
+ cc770_write_reg(priv, msgobj[mo].ctrl0,
+ MSGVAL_RES | TXIE_RES | RXIE_RES | INTPND_RES);
+- /*
+- * We had some cases of repeated IRQ so make sure the
+- * INT is acknowledged
++ cc770_write_reg(priv, msgobj[mo].ctrl1,
++ RMTPND_RES | TXRQST_RES | MSGLST_RES | NEWDAT_RES);
++
++ if (unlikely(!priv->tx_skb)) {
++ netdev_err(dev, "missing tx skb in tx interrupt\n");
++ return;
++ }
++
++ if (unlikely(ctrl1 & MSGLST_SET)) {
++ stats->rx_over_errors++;
++ stats->rx_errors++;
++ }
++
++ /* When the CC770 is sending an RTR message and it receives a regular
++ * message that matches the id of the RTR message, it will overwrite the
++ * outgoing message in the TX register. When this happens we must
++ * process the received message and try to transmit the outgoing skb
++ * again.
+ */
+- cc770_write_reg(priv, msgobj[mo].ctrl0,
+- MSGVAL_UNC | TXIE_UNC | RXIE_UNC | INTPND_RES);
++ if (unlikely(ctrl1 & NEWDAT_SET)) {
++ cc770_rx(dev, mo, ctrl1);
++ cc770_tx(dev, mo);
++ return;
++ }
+
++ cf = (struct can_frame *)priv->tx_skb->data;
++ stats->tx_bytes += cf->can_dlc;
+ stats->tx_packets++;
++
++ can_put_echo_skb(priv->tx_skb, dev, 0);
+ can_get_echo_skb(dev, 0);
++ priv->tx_skb = NULL;
++
+ netif_wake_queue(dev);
+ }
+
+@@ -804,6 +825,7 @@ struct net_device *alloc_cc770dev(int sizeof_priv)
+ priv->can.do_set_bittiming = cc770_set_bittiming;
+ priv->can.do_set_mode = cc770_set_mode;
+ priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;
++ priv->tx_skb = NULL;
+
+ memcpy(priv->obj_flags, cc770_obj_flags, sizeof(cc770_obj_flags));
+
+diff --git a/drivers/net/can/cc770/cc770.h b/drivers/net/can/cc770/cc770.h
+index a1739db98d91..95752e1d1283 100644
+--- a/drivers/net/can/cc770/cc770.h
++++ b/drivers/net/can/cc770/cc770.h
+@@ -193,6 +193,8 @@ struct cc770_priv {
+ u8 cpu_interface; /* CPU interface register */
+ u8 clkout; /* Clock out register */
+ u8 bus_config; /* Bus conffiguration register */
++
++ struct sk_buff *tx_skb;
+ };
+
+ struct net_device *alloc_cc770dev(int sizeof_priv);
+diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
+index b927021c6c40..af3db6b146ab 100644
+--- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
++++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
+@@ -535,6 +535,7 @@ static void xgene_enet_cle_bypass(struct xgene_enet_pdata *pdata,
+ xgene_enet_rd_csr(pdata, CLE_BYPASS_REG0_0_ADDR, &cb);
+ cb |= CFG_CLE_BYPASS_EN0;
+ CFG_CLE_IP_PROTOCOL0_SET(&cb, 3);
++ CFG_CLE_IP_HDR_LEN_SET(&cb, 0);
+ xgene_enet_wr_csr(pdata, CLE_BYPASS_REG0_0_ADDR, cb);
+
+ xgene_enet_rd_csr(pdata, CLE_BYPASS_REG1_0_ADDR, &cb);
+diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h
+index d9bc89d69266..2a2b41a4c9bf 100644
+--- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h
++++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h
+@@ -145,6 +145,7 @@ enum xgene_enet_rm {
+ #define CFG_TXCLK_MUXSEL0_SET(dst, val) xgene_set_bits(dst, val, 29, 3)
+
+ #define CFG_CLE_IP_PROTOCOL0_SET(dst, val) xgene_set_bits(dst, val, 16, 2)
++#define CFG_CLE_IP_HDR_LEN_SET(dst, val) xgene_set_bits(dst, val, 8, 5)
+ #define CFG_CLE_DSTQID0_SET(dst, val) xgene_set_bits(dst, val, 0, 12)
+ #define CFG_CLE_FPSEL0_SET(dst, val) xgene_set_bits(dst, val, 16, 4)
+ #define CFG_MACMODE_SET(dst, val) xgene_set_bits(dst, val, 18, 2)
+diff --git a/drivers/net/ethernet/arc/emac_rockchip.c b/drivers/net/ethernet/arc/emac_rockchip.c
+index c31c7407b753..425dae560322 100644
+--- a/drivers/net/ethernet/arc/emac_rockchip.c
++++ b/drivers/net/ethernet/arc/emac_rockchip.c
+@@ -150,8 +150,10 @@ static int emac_rockchip_probe(struct platform_device *pdev)
+ /* Optional regulator for PHY */
+ priv->regulator = devm_regulator_get_optional(dev, "phy");
+ if (IS_ERR(priv->regulator)) {
+- if (PTR_ERR(priv->regulator) == -EPROBE_DEFER)
+- return -EPROBE_DEFER;
++ if (PTR_ERR(priv->regulator) == -EPROBE_DEFER) {
++ err = -EPROBE_DEFER;
++ goto out_clk_disable;
++ }
+ dev_err(dev, "no regulator found\n");
+ priv->regulator = NULL;
+ }
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+index 0eb43586c034..a3348ba658d3 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+@@ -2024,6 +2024,7 @@ static void bnx2x_set_rx_buf_size(struct bnx2x *bp)
+ ETH_OVREHEAD +
+ mtu +
+ BNX2X_FW_RX_ALIGN_END;
++ fp->rx_buf_size = SKB_DATA_ALIGN(fp->rx_buf_size);
+ /* Note : rx_buf_size doesn't take into account NET_SKB_PAD */
+ if (fp->rx_buf_size + NET_SKB_PAD <= PAGE_SIZE)
+ fp->rx_frag_size = fp->rx_buf_size + NET_SKB_PAD;
+@@ -3877,15 +3878,26 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
+ /* when transmitting in a vf, start bd must hold the ethertype
+ * for fw to enforce it
+ */
++ u16 vlan_tci = 0;
+ #ifndef BNX2X_STOP_ON_ERROR
+- if (IS_VF(bp))
++ if (IS_VF(bp)) {
+ #endif
+- tx_start_bd->vlan_or_ethertype =
+- cpu_to_le16(ntohs(eth->h_proto));
++ /* Still need to consider inband vlan for enforced */
++ if (__vlan_get_tag(skb, &vlan_tci)) {
++ tx_start_bd->vlan_or_ethertype =
++ cpu_to_le16(ntohs(eth->h_proto));
++ } else {
++ tx_start_bd->bd_flags.as_bitfield |=
++ (X_ETH_INBAND_VLAN <<
++ ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
++ tx_start_bd->vlan_or_ethertype =
++ cpu_to_le16(vlan_tci);
++ }
+ #ifndef BNX2X_STOP_ON_ERROR
+- else
++ } else {
+ /* used by FW for packet accounting */
+ tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
++ }
+ #endif
+ }
+
+diff --git a/drivers/net/ethernet/brocade/bna/bfa_ioc.c b/drivers/net/ethernet/brocade/bna/bfa_ioc.c
+index 5be892ffdaed..767132ec00f9 100644
+--- a/drivers/net/ethernet/brocade/bna/bfa_ioc.c
++++ b/drivers/net/ethernet/brocade/bna/bfa_ioc.c
+@@ -2861,7 +2861,7 @@ bfa_ioc_get_adapter_optrom_ver(struct bfa_ioc *ioc, char *optrom_ver)
+ static void
+ bfa_ioc_get_adapter_manufacturer(struct bfa_ioc *ioc, char *manufacturer)
+ {
+- memcpy(manufacturer, BFA_MFG_NAME, BFA_ADAPTER_MFG_NAME_LEN);
++ strncpy(manufacturer, BFA_MFG_NAME, BFA_ADAPTER_MFG_NAME_LEN);
+ }
+
+ static void
+diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
+index 482f6de6817d..ae96b4a32d90 100644
+--- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
++++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
+@@ -2573,8 +2573,8 @@ void t4vf_sge_stop(struct adapter *adapter)
+ int t4vf_sge_init(struct adapter *adapter)
+ {
+ struct sge_params *sge_params = &adapter->params.sge;
+- u32 fl0 = sge_params->sge_fl_buffer_size[0];
+- u32 fl1 = sge_params->sge_fl_buffer_size[1];
++ u32 fl_small_pg = sge_params->sge_fl_buffer_size[0];
++ u32 fl_large_pg = sge_params->sge_fl_buffer_size[1];
+ struct sge *s = &adapter->sge;
+ unsigned int ingpadboundary, ingpackboundary;
+
+@@ -2583,9 +2583,20 @@ int t4vf_sge_init(struct adapter *adapter)
+ * the Physical Function Driver. Ideally we should be able to deal
+ * with _any_ configuration. Practice is different ...
+ */
+- if (fl0 != PAGE_SIZE || (fl1 != 0 && fl1 <= fl0)) {
++
++ /* We only bother using the Large Page logic if the Large Page Buffer
++ * is larger than our Page Size Buffer.
++ */
++ if (fl_large_pg <= fl_small_pg)
++ fl_large_pg = 0;
++
++ /* The Page Size Buffer must be exactly equal to our Page Size and the
++ * Large Page Size Buffer should be 0 (per above) or a power of 2.
++ */
++ if (fl_small_pg != PAGE_SIZE ||
++ (fl_large_pg & (fl_large_pg - 1)) != 0) {
+ dev_err(adapter->pdev_dev, "bad SGE FL buffer sizes [%d, %d]\n",
+- fl0, fl1);
++ fl_small_pg, fl_large_pg);
+ return -EINVAL;
+ }
+ if ((sge_params->sge_control & RXPKTCPLMODE_F) == 0) {
+@@ -2596,8 +2607,8 @@ int t4vf_sge_init(struct adapter *adapter)
+ /*
+ * Now translate the adapter parameters into our internal forms.
+ */
+- if (fl1)
+- s->fl_pg_order = ilog2(fl1) - PAGE_SHIFT;
++ if (fl_large_pg)
++ s->fl_pg_order = ilog2(fl_large_pg) - PAGE_SHIFT;
+ s->stat_len = ((sge_params->sge_control & EGRSTATUSPAGESIZE_F)
+ ? 128 : 64);
+ s->pktshift = PKTSHIFT_G(sge_params->sge_control);
+diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
+index 6d0c5d5eea6d..58c0fccdd8cb 100644
+--- a/drivers/net/ethernet/faraday/ftgmac100.c
++++ b/drivers/net/ethernet/faraday/ftgmac100.c
+@@ -28,6 +28,7 @@
+ #include <linux/io.h>
+ #include <linux/module.h>
+ #include <linux/netdevice.h>
++#include <linux/of.h>
+ #include <linux/phy.h>
+ #include <linux/platform_device.h>
+ #include <net/ip.h>
+diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+index 3c40f6b99224..28e97686f6aa 100644
+--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
++++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+@@ -370,7 +370,7 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
+ {
+ const struct of_device_id *id =
+ of_match_device(fsl_pq_mdio_match, &pdev->dev);
+- const struct fsl_pq_mdio_data *data = id->data;
++ const struct fsl_pq_mdio_data *data;
+ struct device_node *np = pdev->dev.of_node;
+ struct resource res;
+ struct device_node *tbi;
+@@ -378,6 +378,13 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
+ struct mii_bus *new_bus;
+ int err;
+
++ if (!id) {
++ dev_err(&pdev->dev, "Failed to match device\n");
++ return -ENODEV;
++ }
++
++ data = id->data;
++
+ dev_dbg(&pdev->dev, "found %s compatible node\n", id->compatible);
+
+ new_bus = mdiobus_alloc_size(sizeof(*priv));
+diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c
+index b9df0cbd0a38..9571f7dad162 100644
+--- a/drivers/net/ethernet/ibm/emac/core.c
++++ b/drivers/net/ethernet/ibm/emac/core.c
+@@ -342,6 +342,7 @@ static int emac_reset(struct emac_instance *dev)
+ {
+ struct emac_regs __iomem *p = dev->emacp;
+ int n = 20;
++ bool __maybe_unused try_internal_clock = false;
+
+ DBG(dev, "reset" NL);
+
+@@ -354,6 +355,7 @@ static int emac_reset(struct emac_instance *dev)
+ }
+
+ #ifdef CONFIG_PPC_DCR_NATIVE
++do_retry:
+ /*
+ * PPC460EX/GT Embedded Processor Advanced User's Manual
+ * section 28.10.1 Mode Register 0 (EMACx_MR0) states:
+@@ -361,10 +363,19 @@ static int emac_reset(struct emac_instance *dev)
+ * of the EMAC. If none is present, select the internal clock
+ * (SDR0_ETH_CFG[EMACx_PHY_CLK] = 1).
+ * After a soft reset, select the external clock.
++ *
++ * The AR8035-A PHY Meraki MR24 does not provide a TX Clk if the
++ * ethernet cable is not attached. This causes the reset to timeout
++ * and the PHY detection code in emac_init_phy() is unable to
++ * communicate and detect the AR8035-A PHY. As a result, the emac
++ * driver bails out early and the user has no ethernet.
++ * In order to stay compatible with existing configurations, the
++ * driver will temporarily switch to the internal clock, after
++ * the first reset fails.
+ */
+ if (emac_has_feature(dev, EMAC_FTR_460EX_PHY_CLK_FIX)) {
+- if (dev->phy_address == 0xffffffff &&
+- dev->phy_map == 0xffffffff) {
++ if (try_internal_clock || (dev->phy_address == 0xffffffff &&
++ dev->phy_map == 0xffffffff)) {
+ /* No PHY: select internal loop clock before reset */
+ dcri_clrset(SDR0, SDR0_ETH_CFG,
+ 0, SDR0_ETH_CFG_ECS << dev->cell_index);
+@@ -382,8 +393,15 @@ static int emac_reset(struct emac_instance *dev)
+
+ #ifdef CONFIG_PPC_DCR_NATIVE
+ if (emac_has_feature(dev, EMAC_FTR_460EX_PHY_CLK_FIX)) {
+- if (dev->phy_address == 0xffffffff &&
+- dev->phy_map == 0xffffffff) {
++ if (!n && !try_internal_clock) {
++ /* first attempt has timed out. */
++ n = 20;
++ try_internal_clock = true;
++ goto do_retry;
++ }
++
++ if (try_internal_clock || (dev->phy_address == 0xffffffff &&
++ dev->phy_map == 0xffffffff)) {
+ /* No PHY: restore external clock source after reset */
+ dcri_clrset(SDR0, SDR0_ETH_CFG,
+ SDR0_ETH_CFG_ECS << dev->cell_index, 0);
+diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
+index 39e9d7db23df..66cbf19b7635 100644
+--- a/drivers/net/ethernet/intel/e1000e/netdev.c
++++ b/drivers/net/ethernet/intel/e1000e/netdev.c
+@@ -1182,6 +1182,7 @@ static void e1000e_tx_hwtstamp_work(struct work_struct *work)
+ struct e1000_hw *hw = &adapter->hw;
+
+ if (er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID) {
++ struct sk_buff *skb = adapter->tx_hwtstamp_skb;
+ struct skb_shared_hwtstamps shhwtstamps;
+ u64 txstmp;
+
+@@ -1190,9 +1191,14 @@ static void e1000e_tx_hwtstamp_work(struct work_struct *work)
+
+ e1000e_systim_to_hwtstamp(adapter, &shhwtstamps, txstmp);
+
+- skb_tstamp_tx(adapter->tx_hwtstamp_skb, &shhwtstamps);
+- dev_kfree_skb_any(adapter->tx_hwtstamp_skb);
++ /* Clear the global tx_hwtstamp_skb pointer and force writes
++ * prior to notifying the stack of a Tx timestamp.
++ */
+ adapter->tx_hwtstamp_skb = NULL;
++ wmb(); /* force write prior to skb_tstamp_tx */
++
++ skb_tstamp_tx(skb, &shhwtstamps);
++ dev_kfree_skb_any(skb);
+ } else if (time_after(jiffies, adapter->tx_hwtstamp_start
+ + adapter->tx_timeout_factor * HZ)) {
+ dev_kfree_skb_any(adapter->tx_hwtstamp_skb);
+@@ -3524,6 +3530,12 @@ s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca)
+
+ switch (hw->mac.type) {
+ case e1000_pch2lan:
++ /* Stable 96MHz frequency */
++ incperiod = INCPERIOD_96MHz;
++ incvalue = INCVALUE_96MHz;
++ shift = INCVALUE_SHIFT_96MHz;
++ adapter->cc.shift = shift + INCPERIOD_SHIFT_96MHz;
++ break;
+ case e1000_pch_lpt:
+ case e1000_pch_spt:
+ /* On I217, I218 and I219, the clock frequency is 25MHz
+@@ -6375,12 +6387,17 @@ static int e1000e_pm_thaw(struct device *dev)
+ static int e1000e_pm_suspend(struct device *dev)
+ {
+ struct pci_dev *pdev = to_pci_dev(dev);
++ int rc;
+
+ e1000e_flush_lpic(pdev);
+
+ e1000e_pm_freeze(dev);
+
+- return __e1000_shutdown(pdev, false);
++ rc = __e1000_shutdown(pdev, false);
++ if (rc)
++ e1000e_pm_thaw(dev);
++
++ return rc;
+ }
+
+ static int e1000e_pm_resume(struct device *dev)
+diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c b/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
+index 4b9d9f88af70..502a54e9ac33 100644
+--- a/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
++++ b/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
+@@ -869,7 +869,7 @@ static void fm10k_self_test(struct net_device *dev,
+
+ memset(data, 0, sizeof(*data) * FM10K_TEST_LEN);
+
+- if (FM10K_REMOVED(hw)) {
++ if (FM10K_REMOVED(hw->hw_addr)) {
+ netif_err(interface, drv, dev,
+ "Interface removed - test blocked\n");
+ eth_test->flags |= ETH_TEST_FL_FAILED;
+diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
+index d9f4498832a1..bc39fd5e22ad 100644
+--- a/drivers/net/ethernet/marvell/sky2.c
++++ b/drivers/net/ethernet/marvell/sky2.c
+@@ -5067,7 +5067,7 @@ static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ INIT_WORK(&hw->restart_work, sky2_restart);
+
+ pci_set_drvdata(pdev, hw);
+- pdev->d3_delay = 150;
++ pdev->d3_delay = 200;
+
+ return 0;
+
+diff --git a/drivers/net/ethernet/mellanox/mlx4/mcg.c b/drivers/net/ethernet/mellanox/mlx4/mcg.c
+index bd9ea0d01aae..b0d677cad93a 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/mcg.c
++++ b/drivers/net/ethernet/mellanox/mlx4/mcg.c
+@@ -35,6 +35,7 @@
+ #include <linux/etherdevice.h>
+
+ #include <linux/mlx4/cmd.h>
++#include <linux/mlx4/qp.h>
+ #include <linux/export.h>
+
+ #include "mlx4.h"
+@@ -985,16 +986,21 @@ int mlx4_flow_attach(struct mlx4_dev *dev,
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
++ if (!mlx4_qp_lookup(dev, rule->qpn)) {
++ mlx4_err_rule(dev, "QP doesn't exist\n", rule);
++ ret = -EINVAL;
++ goto out;
++ }
++
+ trans_rule_ctrl_to_hw(rule, mailbox->buf);
+
+ size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
+
+ list_for_each_entry(cur, &rule->list, list) {
+ ret = parse_trans_rule(dev, cur, mailbox->buf + size);
+- if (ret < 0) {
+- mlx4_free_cmd_mailbox(dev, mailbox);
+- return ret;
+- }
++ if (ret < 0)
++ goto out;
++
+ size += ret;
+ }
+
+@@ -1021,6 +1027,7 @@ int mlx4_flow_attach(struct mlx4_dev *dev,
+ }
+ }
+
++out:
+ mlx4_free_cmd_mailbox(dev, mailbox);
+
+ return ret;
+diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
+index eb1dcb7e9e96..c20e2d2f911a 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
++++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
+@@ -381,6 +381,19 @@ static void mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn)
+ __mlx4_qp_free_icm(dev, qpn);
+ }
+
++struct mlx4_qp *mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn)
++{
++ struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
++ struct mlx4_qp *qp;
++
++ spin_lock(&qp_table->lock);
++
++ qp = __mlx4_qp_lookup(dev, qpn);
++
++ spin_unlock(&qp_table->lock);
++ return qp;
++}
++
+ int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp, gfp_t gfp)
+ {
+ struct mlx4_priv *priv = mlx4_priv(dev);
+diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c
+index b8d5270359cd..e30676515529 100644
+--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c
++++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c
+@@ -247,7 +247,7 @@ nx_fw_cmd_set_mtu(struct netxen_adapter *adapter, int mtu)
+ cmd.req.arg3 = 0;
+
+ if (recv_ctx->state == NX_HOST_CTX_STATE_ACTIVE)
+- netxen_issue_cmd(adapter, &cmd);
++ rcode = netxen_issue_cmd(adapter, &cmd);
+
+ if (rcode != NX_RCODE_SUCCESS)
+ return -EIO;
+diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
+index 75ee9e4ced51..01e250935787 100644
+--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
++++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
+@@ -341,7 +341,7 @@ qlcnic_pcie_sem_lock(struct qlcnic_adapter *adapter, int sem, u32 id_reg)
+ }
+ return -EIO;
+ }
+- usleep_range(1000, 1500);
++ udelay(1200);
+ }
+
+ if (id_reg)
+diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
+index e6312465fe45..d732c63cd496 100644
+--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
++++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
+@@ -126,6 +126,8 @@ static int qlcnic_sriov_virtid_fn(struct qlcnic_adapter *adapter, int vf_id)
+ return 0;
+
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
++ if (!pos)
++ return 0;
+ pci_read_config_word(dev, pos + PCI_SRIOV_VF_OFFSET, &offset);
+ pci_read_config_word(dev, pos + PCI_SRIOV_VF_STRIDE, &stride);
+
+diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c b/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c
+index be258d90de9e..e3223f2fe2ff 100644
+--- a/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c
++++ b/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c
+@@ -765,7 +765,7 @@ int ql_core_dump(struct ql_adapter *qdev, struct ql_mpi_coredump *mpi_coredump)
+ sizeof(struct mpi_coredump_global_header);
+ mpi_coredump->mpi_global_header.imageSize =
+ sizeof(struct ql_mpi_coredump);
+- memcpy(mpi_coredump->mpi_global_header.idString, "MPI Coredump",
++ strncpy(mpi_coredump->mpi_global_header.idString, "MPI Coredump",
+ sizeof(mpi_coredump->mpi_global_header.idString));
+
+ /* Get generic NIC reg dump */
+@@ -1255,7 +1255,7 @@ static void ql_gen_reg_dump(struct ql_adapter *qdev,
+ sizeof(struct mpi_coredump_global_header);
+ mpi_coredump->mpi_global_header.imageSize =
+ sizeof(struct ql_reg_dump);
+- memcpy(mpi_coredump->mpi_global_header.idString, "MPI Coredump",
++ strncpy(mpi_coredump->mpi_global_header.idString, "MPI Coredump",
+ sizeof(mpi_coredump->mpi_global_header.idString));
+
+
+diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
+index cba41860167c..32113fafc07b 100644
+--- a/drivers/net/ethernet/qualcomm/qca_spi.c
++++ b/drivers/net/ethernet/qualcomm/qca_spi.c
+@@ -296,8 +296,9 @@ qcaspi_receive(struct qcaspi *qca)
+
+ /* Allocate rx SKB if we don't have one available. */
+ if (!qca->rx_skb) {
+- qca->rx_skb = netdev_alloc_skb(net_dev,
+- net_dev->mtu + VLAN_ETH_HLEN);
++ qca->rx_skb = netdev_alloc_skb_ip_align(net_dev,
++ net_dev->mtu +
++ VLAN_ETH_HLEN);
+ if (!qca->rx_skb) {
+ netdev_dbg(net_dev, "out of RX resources\n");
+ qca->stats.out_of_mem++;
+@@ -377,7 +378,7 @@ qcaspi_receive(struct qcaspi *qca)
+ qca->rx_skb, qca->rx_skb->dev);
+ qca->rx_skb->ip_summed = CHECKSUM_UNNECESSARY;
+ netif_rx_ni(qca->rx_skb);
+- qca->rx_skb = netdev_alloc_skb(net_dev,
++ qca->rx_skb = netdev_alloc_skb_ip_align(net_dev,
+ net_dev->mtu + VLAN_ETH_HLEN);
+ if (!qca->rx_skb) {
+ netdev_dbg(net_dev, "out of RX resources\n");
+@@ -759,7 +760,8 @@ qcaspi_netdev_init(struct net_device *dev)
+ if (!qca->rx_buffer)
+ return -ENOBUFS;
+
+- qca->rx_skb = netdev_alloc_skb(dev, qca->net_dev->mtu + VLAN_ETH_HLEN);
++ qca->rx_skb = netdev_alloc_skb_ip_align(dev, qca->net_dev->mtu +
++ VLAN_ETH_HLEN);
+ if (!qca->rx_skb) {
+ kfree(qca->rx_buffer);
+ netdev_info(qca->net_dev, "Failed to allocate RX sk_buff.\n");
+diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
+index 0ae76e419482..c64ed1613928 100644
+--- a/drivers/net/ethernet/renesas/sh_eth.c
++++ b/drivers/net/ethernet/renesas/sh_eth.c
+@@ -3217,7 +3217,7 @@ static int sh_eth_drv_probe(struct platform_device *pdev)
+ /* MDIO bus init */
+ ret = sh_mdio_init(mdp, pd);
+ if (ret) {
+- dev_err(&ndev->dev, "failed to initialise MDIO\n");
++ dev_err(&pdev->dev, "failed to initialise MDIO\n");
+ goto out_release;
+ }
+
+diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
+index b536b4c82752..9d12f7012798 100644
+--- a/drivers/net/ethernet/ti/cpsw.c
++++ b/drivers/net/ethernet/ti/cpsw.c
+@@ -291,6 +291,10 @@ struct cpsw_ss_regs {
+ /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
+ #define CPSW_V1_SEQ_ID_OFS_SHIFT 16
+
++#define CPSW_MAX_BLKS_TX 15
++#define CPSW_MAX_BLKS_TX_SHIFT 4
++#define CPSW_MAX_BLKS_RX 5
++
+ struct cpsw_host_regs {
+ u32 max_blks;
+ u32 blk_cnt;
+@@ -1126,11 +1130,23 @@ static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
+ switch (priv->version) {
+ case CPSW_VERSION_1:
+ slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
++ /* Increase RX FIFO size to 5 for supporting fullduplex
++ * flow control mode
++ */
++ slave_write(slave,
++ (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
++ CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
+ break;
+ case CPSW_VERSION_2:
+ case CPSW_VERSION_3:
+ case CPSW_VERSION_4:
+ slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
++ /* Increase RX FIFO size to 5 for supporting fullduplex
++ * flow control mode
++ */
++ slave_write(slave,
++ (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
++ CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
+ break;
+ }
+
+diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c
+index 49fe59b180a8..a75ce9051a7f 100644
+--- a/drivers/net/hamradio/hdlcdrv.c
++++ b/drivers/net/hamradio/hdlcdrv.c
+@@ -574,6 +574,8 @@ static int hdlcdrv_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+ case HDLCDRVCTL_CALIBRATE:
+ if(!capable(CAP_SYS_RAWIO))
+ return -EPERM;
++ if (s->par.bitrate <= 0)
++ return -EINVAL;
+ if (bi.data.calibrate > INT_MAX / s->par.bitrate)
+ return -EINVAL;
+ s->hdlctx.calibrate = bi.data.calibrate * s->par.bitrate / 16;
+diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
+index f3cd85ecd795..7439df3dd667 100644
+--- a/drivers/net/ipvlan/ipvlan_core.c
++++ b/drivers/net/ipvlan/ipvlan_core.c
+@@ -275,6 +275,10 @@ static int ipvlan_rcv_frame(struct ipvl_addr *addr, struct sk_buff *skb,
+ if (dev_forward_skb(ipvlan->dev, skb) == NET_RX_SUCCESS)
+ success = true;
+ } else {
++ if (!ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
++ ipvlan->phy_dev->dev_addr))
++ skb->pkt_type = PACKET_OTHERHOST;
++
+ ret = RX_HANDLER_ANOTHER;
+ success = true;
+ }
+diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
+index 1ca78b46c01b..0afda59439d5 100644
+--- a/drivers/net/phy/phy.c
++++ b/drivers/net/phy/phy.c
+@@ -123,6 +123,12 @@ static inline int phy_aneg_done(struct phy_device *phydev)
+ if (phydev->drv->aneg_done)
+ return phydev->drv->aneg_done(phydev);
+
++ /* Avoid genphy_aneg_done() if the Clause 45 PHY does not
++ * implement Clause 22 registers
++ */
++ if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
++ return -EINVAL;
++
+ return genphy_aneg_done(phydev);
+ }
+
+diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
+index 31aa93907b77..0123d7d1a391 100644
+--- a/drivers/net/ppp/pppoe.c
++++ b/drivers/net/ppp/pppoe.c
+@@ -638,6 +638,10 @@ static int pppoe_connect(struct socket *sock, struct sockaddr *uservaddr,
+ lock_sock(sk);
+
+ error = -EINVAL;
++
++ if (sockaddr_len != sizeof(struct sockaddr_pppox))
++ goto end;
++
+ if (sp->sa_protocol != PX_PROTO_OE)
+ goto end;
+
+diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
+index b35199cc8f34..17407494531e 100644
+--- a/drivers/net/ppp/pptp.c
++++ b/drivers/net/ppp/pptp.c
+@@ -502,7 +502,6 @@ static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr,
+ po->chan.mtu = dst_mtu(&rt->dst);
+ if (!po->chan.mtu)
+ po->chan.mtu = PPP_MRU;
+- ip_rt_put(rt);
+ po->chan.mtu -= PPTP_HEADER_OVERHEAD;
+
+ po->chan.hdrlen = 2 + sizeof(struct pptp_gre_header);
+diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
+index 27ed25252aac..cfd81eb1b532 100644
+--- a/drivers/net/slip/slhc.c
++++ b/drivers/net/slip/slhc.c
+@@ -509,6 +509,10 @@ slhc_uncompress(struct slcompress *comp, unsigned char *icp, int isize)
+ if(x < 0 || x > comp->rslot_limit)
+ goto bad;
+
++ /* Check if the cstate is initialized */
++ if (!comp->rstate[x].initialized)
++ goto bad;
++
+ comp->flags &=~ SLF_TOSS;
+ comp->recv_current = x;
+ } else {
+@@ -673,6 +677,7 @@ slhc_remember(struct slcompress *comp, unsigned char *icp, int isize)
+ if (cs->cs_tcp.doff > 5)
+ memcpy(cs->cs_tcpopt, icp + ihl*4 + sizeof(struct tcphdr), (cs->cs_tcp.doff - 5) * 4);
+ cs->cs_hsize = ihl*2 + cs->cs_tcp.doff*2;
++ cs->initialized = true;
+ /* Put headers back on packet
+ * Neither header checksum is recalculated
+ */
+diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
+index a16b054a4fa6..463b8d013deb 100644
+--- a/drivers/net/team/team.c
++++ b/drivers/net/team/team.c
+@@ -247,6 +247,17 @@ static void __team_option_inst_mark_removed_port(struct team *team,
+ }
+ }
+
++static bool __team_option_inst_tmp_find(const struct list_head *opts,
++ const struct team_option_inst *needle)
++{
++ struct team_option_inst *opt_inst;
++
++ list_for_each_entry(opt_inst, opts, tmp_list)
++ if (opt_inst == needle)
++ return true;
++ return false;
++}
++
+ static int __team_options_register(struct team *team,
+ const struct team_option *option,
+ size_t option_count)
+@@ -1034,14 +1045,11 @@ static void team_port_leave(struct team *team, struct team_port *port)
+ }
+
+ #ifdef CONFIG_NET_POLL_CONTROLLER
+-static int team_port_enable_netpoll(struct team *team, struct team_port *port)
++static int __team_port_enable_netpoll(struct team_port *port)
+ {
+ struct netpoll *np;
+ int err;
+
+- if (!team->dev->npinfo)
+- return 0;
+-
+ np = kzalloc(sizeof(*np), GFP_KERNEL);
+ if (!np)
+ return -ENOMEM;
+@@ -1055,6 +1063,14 @@ static int team_port_enable_netpoll(struct team *team, struct team_port *port)
+ return err;
+ }
+
++static int team_port_enable_netpoll(struct team_port *port)
++{
++ if (!port->team->dev->npinfo)
++ return 0;
++
++ return __team_port_enable_netpoll(port);
++}
++
+ static void team_port_disable_netpoll(struct team_port *port)
+ {
+ struct netpoll *np = port->np;
+@@ -1069,7 +1085,7 @@ static void team_port_disable_netpoll(struct team_port *port)
+ kfree(np);
+ }
+ #else
+-static int team_port_enable_netpoll(struct team *team, struct team_port *port)
++static int team_port_enable_netpoll(struct team_port *port)
+ {
+ return 0;
+ }
+@@ -1176,7 +1192,7 @@ static int team_port_add(struct team *team, struct net_device *port_dev)
+ goto err_vids_add;
+ }
+
+- err = team_port_enable_netpoll(team, port);
++ err = team_port_enable_netpoll(port);
+ if (err) {
+ netdev_err(dev, "Failed to enable netpoll on device %s\n",
+ portname);
+@@ -1884,7 +1900,7 @@ static int team_netpoll_setup(struct net_device *dev,
+
+ mutex_lock(&team->lock);
+ list_for_each_entry(port, &team->port_list, list) {
+- err = team_port_enable_netpoll(team, port);
++ err = __team_port_enable_netpoll(port);
+ if (err) {
+ __team_netpoll_cleanup(team);
+ break;
+@@ -2371,7 +2387,7 @@ send_done:
+ if (!nlh) {
+ err = __send_and_alloc_skb(&skb, team, portid, send_func);
+ if (err)
+- goto errout;
++ return err;
+ goto send_done;
+ }
+
+@@ -2535,6 +2551,14 @@ static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
+ if (err)
+ goto team_put;
+ opt_inst->changed = true;
++
++ /* dumb/evil user-space can send us duplicate opt,
++ * keep only the last one
++ */
++ if (__team_option_inst_tmp_find(&opt_inst_list,
++ opt_inst))
++ continue;
++
+ list_add(&opt_inst->tmp_list, &opt_inst_list);
+ }
+ if (!opt_found) {
+@@ -2651,7 +2675,7 @@ send_done:
+ if (!nlh) {
+ err = __send_and_alloc_skb(&skb, team, portid, send_func);
+ if (err)
+- goto errout;
++ return err;
+ goto send_done;
+ }
+
+diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
+index 4545e78840b0..5243d2797c3d 100644
+--- a/drivers/net/usb/cdc_ether.c
++++ b/drivers/net/usb/cdc_ether.c
+@@ -750,6 +750,12 @@ static const struct usb_device_id products[] = {
+ USB_CDC_SUBCLASS_ETHERNET,
+ USB_CDC_PROTO_NONE),
+ .driver_info = (unsigned long)&wwan_info,
++}, {
++ /* Cinterion AHS3 modem by GEMALTO */
++ USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0055, USB_CLASS_COMM,
++ USB_CDC_SUBCLASS_ETHERNET,
++ USB_CDC_PROTO_NONE),
++ .driver_info = (unsigned long)&wwan_info,
+ }, {
+ /* Telit modules */
+ USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index 3d97fd391793..23a327e93732 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -674,6 +674,7 @@ static const struct usb_device_id products[] = {
+ {QMI_FIXED_INTF(0x05c6, 0x9080, 8)},
+ {QMI_FIXED_INTF(0x05c6, 0x9083, 3)},
+ {QMI_FIXED_INTF(0x05c6, 0x9084, 4)},
++ {QMI_FIXED_INTF(0x05c6, 0x90b2, 3)}, /* ublox R410M */
+ {QMI_FIXED_INTF(0x05c6, 0x920d, 0)},
+ {QMI_FIXED_INTF(0x05c6, 0x920d, 5)},
+ {QMI_FIXED_INTF(0x0846, 0x68a2, 8)},
+diff --git a/drivers/net/veth.c b/drivers/net/veth.c
+index 2e61a799f32a..611c78be4da9 100644
+--- a/drivers/net/veth.c
++++ b/drivers/net/veth.c
+@@ -397,6 +397,9 @@ static int veth_newlink(struct net *src_net, struct net_device *dev,
+ if (ifmp && (dev->ifindex != 0))
+ peer->ifindex = ifmp->ifi_index;
+
++ peer->gso_max_size = dev->gso_max_size;
++ peer->gso_max_segs = dev->gso_max_segs;
++
+ err = register_netdevice(peer);
+ put_net(net);
+ net = NULL;
+diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
+index 64ca961bca18..9ecc6ca5e4b4 100644
+--- a/drivers/net/virtio_net.c
++++ b/drivers/net/virtio_net.c
+@@ -852,7 +852,7 @@ static int xmit_skb(struct send_queue *sq, struct sk_buff *skb)
+ struct virtio_net_hdr_mrg_rxbuf *hdr;
+ const unsigned char *dest = ((struct ethhdr *)skb->data)->h_dest;
+ struct virtnet_info *vi = sq->vq->vdev->priv;
+- unsigned num_sg;
++ int num_sg;
+ unsigned hdr_len = vi->hdr_len;
+ bool can_push;
+
+@@ -905,11 +905,16 @@ static int xmit_skb(struct send_queue *sq, struct sk_buff *skb)
+ if (can_push) {
+ __skb_push(skb, hdr_len);
+ num_sg = skb_to_sgvec(skb, sq->sg, 0, skb->len);
++ if (unlikely(num_sg < 0))
++ return num_sg;
+ /* Pull header back to avoid skew in tx bytes calculations. */
+ __skb_pull(skb, hdr_len);
+ } else {
+ sg_set_buf(sq->sg, hdr, hdr_len);
+- num_sg = skb_to_sgvec(skb, sq->sg + 1, 0, skb->len) + 1;
++ num_sg = skb_to_sgvec(skb, sq->sg + 1, 0, skb->len);
++ if (unlikely(num_sg < 0))
++ return num_sg;
++ num_sg++;
+ }
+ return virtqueue_add_outbuf(sq->vq, sq->sg, num_sg, skb, GFP_ATOMIC);
+ }
+diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
+index 0b9c8d61f7d1..51998a85e314 100644
+--- a/drivers/net/vmxnet3/vmxnet3_drv.c
++++ b/drivers/net/vmxnet3/vmxnet3_drv.c
+@@ -2655,6 +2655,11 @@ vmxnet3_force_close(struct vmxnet3_adapter *adapter)
+ /* we need to enable NAPI, otherwise dev_close will deadlock */
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ napi_enable(&adapter->rx_queue[i].napi);
++ /*
++ * Need to clear the quiesce bit to ensure that vmxnet3_close
++ * can quiesce the device properly
++ */
++ clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
+ dev_close(adapter->netdev);
+ }
+
+diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
+index 1ad3700ed9c7..8ddefc96fb50 100644
+--- a/drivers/net/vxlan.c
++++ b/drivers/net/vxlan.c
+@@ -1001,7 +1001,7 @@ static bool vxlan_snoop(struct net_device *dev,
+ return false;
+
+ /* Don't migrate static entries, drop packets */
+- if (f->state & NUD_NOARP)
++ if (f->state & (NUD_PERMANENT | NUD_NOARP))
+ return true;
+
+ if (net_ratelimit())
+diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c
+index db363856e0b5..2b064998915f 100644
+--- a/drivers/net/wan/pc300too.c
++++ b/drivers/net/wan/pc300too.c
+@@ -347,6 +347,7 @@ static int pc300_pci_init_one(struct pci_dev *pdev,
+ card->rambase == NULL) {
+ pr_err("ioremap() failed\n");
+ pc300_pci_remove_one(pdev);
++ return -ENOMEM;
+ }
+
+ /* PLX PCI 9050 workaround for local configuration register read bug */
+diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
+index 1b69427fbb29..8b1ab8880113 100644
+--- a/drivers/net/wireless/ath/ath10k/debug.c
++++ b/drivers/net/wireless/ath/ath10k/debug.c
+@@ -1853,6 +1853,15 @@ static ssize_t ath10k_write_simulate_radar(struct file *file,
+ size_t count, loff_t *ppos)
+ {
+ struct ath10k *ar = file->private_data;
++ struct ath10k_vif *arvif;
++
++ /* Just check for for the first vif alone, as all the vifs will be
++ * sharing the same channel and if the channel is disabled, all the
++ * vifs will share the same 'is_started' state.
++ */
++ arvif = list_first_entry(&ar->arvifs, typeof(*arvif), list);
++ if (!arvif->is_started)
++ return -EINVAL;
+
+ ieee80211_radar_detected(ar->hw);
+
+diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
+index 6757d9c63bf2..561a777ba8c7 100644
+--- a/drivers/net/wireless/ath/ath10k/mac.c
++++ b/drivers/net/wireless/ath/ath10k/mac.c
+@@ -4001,9 +4001,8 @@ static void ath10k_sta_rc_update_wk(struct work_struct *wk)
+ sta->addr, smps, err);
+ }
+
+- if (changed & IEEE80211_RC_SUPP_RATES_CHANGED ||
+- changed & IEEE80211_RC_NSS_CHANGED) {
+- ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates/nss\n",
++ if (changed & IEEE80211_RC_SUPP_RATES_CHANGED) {
++ ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates\n",
+ sta->addr);
+
+ err = ath10k_station_assoc(ar, arvif->vif, sta, true);
+diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
+index c70782e8f07b..b5802e37ab24 100644
+--- a/drivers/net/wireless/ath/ath5k/debug.c
++++ b/drivers/net/wireless/ath/ath5k/debug.c
+@@ -939,7 +939,10 @@ static int open_file_eeprom(struct inode *inode, struct file *file)
+ }
+
+ for (i = 0; i < eesize; ++i) {
+- AR5K_EEPROM_READ(i, val);
++ if (!ath5k_hw_nvram_read(ah, i, &val)) {
++ ret = -EIO;
++ goto freebuf;
++ }
+ buf[i] = val;
+ }
+
+diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
+index 5e15e8e10ed3..bb64d7377a96 100644
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1593,6 +1593,10 @@ bool ath9k_hw_check_alive(struct ath_hw *ah)
+ int count = 50;
+ u32 reg, last_val;
+
++ /* Check if chip failed to wake up */
++ if (REG_READ(ah, AR_CFG) == 0xdeadbeef)
++ return false;
++
+ if (AR_SREV_9300(ah))
+ return !ath9k_hw_detect_mac_hang(ah);
+
+diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c
+index 06ea6cc9e30a..62077bda8dde 100644
+--- a/drivers/net/wireless/ath/regd.c
++++ b/drivers/net/wireless/ath/regd.c
+@@ -254,8 +254,12 @@ bool ath_is_49ghz_allowed(u16 regdomain)
+ EXPORT_SYMBOL(ath_is_49ghz_allowed);
+
+ /* Frequency is one where radar detection is required */
+-static bool ath_is_radar_freq(u16 center_freq)
++static bool ath_is_radar_freq(u16 center_freq,
++ struct ath_regulatory *reg)
++
+ {
++ if (reg->country_code == CTRY_INDIA)
++ return (center_freq >= 5500 && center_freq <= 5700);
+ return (center_freq >= 5260 && center_freq <= 5700);
+ }
+
+@@ -306,7 +310,7 @@ __ath_reg_apply_beaconing_flags(struct wiphy *wiphy,
+ enum nl80211_reg_initiator initiator,
+ struct ieee80211_channel *ch)
+ {
+- if (ath_is_radar_freq(ch->center_freq) ||
++ if (ath_is_radar_freq(ch->center_freq, reg) ||
+ (ch->flags & IEEE80211_CHAN_RADAR))
+ return;
+
+@@ -395,8 +399,9 @@ ath_reg_apply_ir_flags(struct wiphy *wiphy,
+ }
+ }
+
+-/* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */
+-static void ath_reg_apply_radar_flags(struct wiphy *wiphy)
++/* Always apply Radar/DFS rules on freq range 5500 MHz - 5700 MHz */
++static void ath_reg_apply_radar_flags(struct wiphy *wiphy,
++ struct ath_regulatory *reg)
+ {
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_channel *ch;
+@@ -409,7 +414,7 @@ static void ath_reg_apply_radar_flags(struct wiphy *wiphy)
+
+ for (i = 0; i < sband->n_channels; i++) {
+ ch = &sband->channels[i];
+- if (!ath_is_radar_freq(ch->center_freq))
++ if (!ath_is_radar_freq(ch->center_freq, reg))
+ continue;
+ /* We always enable radar detection/DFS on this
+ * frequency range. Additionally we also apply on
+@@ -505,7 +510,7 @@ void ath_reg_notifier_apply(struct wiphy *wiphy,
+ struct ath_common *common = container_of(reg, struct ath_common,
+ regulatory);
+ /* We always apply this */
+- ath_reg_apply_radar_flags(wiphy);
++ ath_reg_apply_radar_flags(wiphy, reg);
+
+ /*
+ * This would happen when we have sent a custom regulatory request
+@@ -653,7 +658,7 @@ ath_regd_init_wiphy(struct ath_regulatory *reg,
+ }
+
+ wiphy_apply_custom_regulatory(wiphy, regd);
+- ath_reg_apply_radar_flags(wiphy);
++ ath_reg_apply_radar_flags(wiphy, reg);
+ ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg);
+ return 0;
+ }
+diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c
+index a058151f5eed..ec51447365c1 100644
+--- a/drivers/net/wireless/ath/wil6210/main.c
++++ b/drivers/net/wireless/ath/wil6210/main.c
+@@ -118,9 +118,15 @@ void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
+ u32 *d = dst;
+ const volatile u32 __iomem *s = src;
+
+- /* size_t is unsigned, if (count%4 != 0) it will wrap */
+- for (count += 4; count > 4; count -= 4)
++ for (; count >= 4; count -= 4)
+ *d++ = __raw_readl(s++);
++
++ if (unlikely(count)) {
++ /* count can be 1..3 */
++ u32 tmp = __raw_readl(s);
++
++ memcpy(d, &tmp, count);
++ }
+ }
+
+ void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
+@@ -129,8 +135,16 @@ void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
+ volatile u32 __iomem *d = dst;
+ const u32 *s = src;
+
+- for (count += 4; count > 4; count -= 4)
++ for (; count >= 4; count -= 4)
+ __raw_writel(*s++, d++);
++
++ if (unlikely(count)) {
++ /* count can be 1..3 */
++ u32 tmp = 0;
++
++ memcpy(&tmp, s, count);
++ __raw_writel(tmp, d);
++ }
+ }
+
+ static void wil_disconnect_cid(struct wil6210_priv *wil, int cid,
+diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c
+index 710fbe570eb2..a85ac706f892 100644
+--- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c
+@@ -460,25 +460,23 @@ static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
+ * @dev_addr: optional device address.
+ *
+ * P2P needs mac addresses for P2P device and interface. If no device
+- * address it specified, these are derived from the primary net device, ie.
+- * the permanent ethernet address of the device.
++ * address it specified, these are derived from a random ethernet
++ * address.
+ */
+ static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)
+ {
+- struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
+- bool local_admin = false;
++ bool random_addr = false;
+
+- if (!dev_addr || is_zero_ether_addr(dev_addr)) {
+- dev_addr = pri_ifp->mac_addr;
+- local_admin = true;
+- }
++ if (!dev_addr || is_zero_ether_addr(dev_addr))
++ random_addr = true;
+
+- /* Generate the P2P Device Address. This consists of the device's
+- * primary MAC address with the locally administered bit set.
++ /* Generate the P2P Device Address obtaining a random ethernet
++ * address with the locally administered bit set.
+ */
+- memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
+- if (local_admin)
+- p2p->dev_addr[0] |= 0x02;
++ if (random_addr)
++ eth_random_addr(p2p->dev_addr);
++ else
++ memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
+
+ /* Generate the P2P Interface Address. If the discovery and connection
+ * BSSCFGs need to simultaneously co-exist, then this address must be
+diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
+index aafb97ce080d..eadb9ded7070 100644
+--- a/drivers/net/wireless/mac80211_hwsim.c
++++ b/drivers/net/wireless/mac80211_hwsim.c
+@@ -699,16 +699,21 @@ static int hwsim_fops_ps_write(void *dat, u64 val)
+ val != PS_MANUAL_POLL)
+ return -EINVAL;
+
+- old_ps = data->ps;
+- data->ps = val;
+-
+- local_bh_disable();
+ if (val == PS_MANUAL_POLL) {
++ if (data->ps != PS_ENABLED)
++ return -EINVAL;
++ local_bh_disable();
+ ieee80211_iterate_active_interfaces_atomic(
+ data->hw, IEEE80211_IFACE_ITER_NORMAL,
+ hwsim_send_ps_poll, data);
+- data->ps_poll_pending = true;
+- } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
++ local_bh_enable();
++ return 0;
++ }
++ old_ps = data->ps;
++ data->ps = val;
++
++ local_bh_disable();
++ if (old_ps == PS_DISABLED && val != PS_DISABLED) {
+ ieee80211_iterate_active_interfaces_atomic(
+ data->hw, IEEE80211_IFACE_ITER_NORMAL,
+ hwsim_send_nullfunc_ps, data);
+diff --git a/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c
+index 477f86354dc5..4482debcfe84 100644
+--- a/drivers/net/wireless/ray_cs.c
++++ b/drivers/net/wireless/ray_cs.c
+@@ -247,7 +247,10 @@ static const UCHAR b4_default_startup_parms[] = {
+ 0x04, 0x08, /* Noise gain, limit offset */
+ 0x28, 0x28, /* det rssi, med busy offsets */
+ 7, /* det sync thresh */
+- 0, 2, 2 /* test mode, min, max */
++ 0, 2, 2, /* test mode, min, max */
++ 0, /* rx/tx delay */
++ 0, 0, 0, 0, 0, 0, /* current BSS id */
++ 0 /* hop set */
+ };
+
+ /*===========================================================================*/
+@@ -598,7 +601,7 @@ static void init_startup_params(ray_dev_t *local)
+ * a_beacon_period = hops a_beacon_period = KuS
+ *//* 64ms = 010000 */
+ if (local->fw_ver == 0x55) {
+- memcpy((UCHAR *) &local->sparm.b4, b4_default_startup_parms,
++ memcpy(&local->sparm.b4, b4_default_startup_parms,
+ sizeof(struct b4_startup_params));
+ /* Translate sane kus input values to old build 4/5 format */
+ /* i = hop time in uS truncated to 3 bytes */
+diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
+index d72ff8e7125d..3f2554fb1a62 100644
+--- a/drivers/net/wireless/rndis_wlan.c
++++ b/drivers/net/wireless/rndis_wlan.c
+@@ -3425,6 +3425,10 @@ static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
+
+ /* because rndis_command() sleeps we need to use workqueue */
+ priv->workqueue = create_singlethread_workqueue("rndis_wlan");
++ if (!priv->workqueue) {
++ wiphy_free(wiphy);
++ return -ENOMEM;
++ }
+ INIT_WORK(&priv->work, rndis_wlan_worker);
+ INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
+ INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
+diff --git a/drivers/net/wireless/rtl818x/rtl8187/dev.c b/drivers/net/wireless/rtl818x/rtl8187/dev.c
+index 629ad8cfa17b..6952aaa232f7 100644
+--- a/drivers/net/wireless/rtl818x/rtl8187/dev.c
++++ b/drivers/net/wireless/rtl818x/rtl8187/dev.c
+@@ -1454,6 +1454,7 @@ static int rtl8187_probe(struct usb_interface *intf,
+ goto err_free_dev;
+ }
+ mutex_init(&priv->io_mutex);
++ mutex_init(&priv->conf_mutex);
+
+ SET_IEEE80211_DEV(dev, &intf->dev);
+ usb_set_intfdata(intf, dev);
+@@ -1627,7 +1628,6 @@ static int rtl8187_probe(struct usb_interface *intf,
+ printk(KERN_ERR "rtl8187: Cannot register device\n");
+ goto err_free_dmabuf;
+ }
+- mutex_init(&priv->conf_mutex);
+ skb_queue_head_init(&priv->b_tx_status.queue);
+
+ wiphy_info(dev->wiphy, "hwaddr %pM, %s V%d + %s, rfkill mask %d\n",
+diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
+index 5b4048041147..1f75586ab3a6 100644
+--- a/drivers/net/wireless/rtlwifi/pci.c
++++ b/drivers/net/wireless/rtlwifi/pci.c
+@@ -1576,7 +1576,14 @@ int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw)
+ dev_kfree_skb_irq(skb);
+ ring->idx = (ring->idx + 1) % ring->entries;
+ }
++
++ if (rtlpriv->use_new_trx_flow) {
++ rtlpci->tx_ring[i].cur_tx_rp = 0;
++ rtlpci->tx_ring[i].cur_tx_wp = 0;
++ }
++
+ ring->idx = 0;
++ ring->entries = rtlpci->txringcount[i];
+ }
+ }
+ spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
+diff --git a/drivers/net/wireless/rtlwifi/rtl8192ee/fw.c b/drivers/net/wireless/rtlwifi/rtl8192ee/fw.c
+index c5d4b8013cde..5a0fffaed0f5 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8192ee/fw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8192ee/fw.c
+@@ -664,7 +664,7 @@ void rtl92ee_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ struct sk_buff *skb = NULL;
+-
++ bool rtstatus;
+ u32 totalpacketlen;
+ u8 u1rsvdpageloc[5] = { 0 };
+ bool b_dlok = false;
+@@ -727,7 +727,9 @@ void rtl92ee_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
+ memcpy((u8 *)skb_put(skb, totalpacketlen),
+ &reserved_page_packet, totalpacketlen);
+
+- b_dlok = true;
++ rtstatus = rtl_cmd_send_packet(hw, skb);
++ if (rtstatus)
++ b_dlok = true;
+
+ if (b_dlok) {
+ RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD ,
+diff --git a/drivers/net/wireless/rtlwifi/rtl8821ae/dm.c b/drivers/net/wireless/rtlwifi/rtl8821ae/dm.c
+index 342678d2ed42..19f0db505a50 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8821ae/dm.c
++++ b/drivers/net/wireless/rtlwifi/rtl8821ae/dm.c
+@@ -2490,9 +2490,9 @@ void rtl8821ae_dm_txpower_tracking_callback_thermalmeter(
+ for (p = RF90_PATH_A; p < MAX_PATH_NUM_8821A; p++)
+ rtldm->swing_idx_ofdm_base[p] = rtldm->swing_idx_ofdm[p];
+
+- RT_TRACE(rtlpriv, COMP_POWER_TRACKING, DBG_LOUD,
+- "pDM_Odm->RFCalibrateInfo.ThermalValue = %d ThermalValue= %d\n",
+- rtldm->thermalvalue, thermal_value);
++ RT_TRACE(rtlpriv, COMP_POWER_TRACKING, DBG_LOUD,
++ "pDM_Odm->RFCalibrateInfo.ThermalValue = %d ThermalValue= %d\n",
++ rtldm->thermalvalue, thermal_value);
+ /*Record last Power Tracking Thermal Value*/
+ rtldm->thermalvalue = thermal_value;
+ }
+diff --git a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+index 76e52dfb2be5..cf0e54b8846c 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+@@ -1377,6 +1377,7 @@ static void _rtl8821ae_get_wakeup_reason(struct ieee80211_hw *hw)
+
+ ppsc->wakeup_reason = 0;
+
++ do_gettimeofday(&ts);
+ rtlhal->last_suspend_sec = ts.tv_sec;
+
+ switch (fw_reason) {
+diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c
+index 040bf3c66958..0ac639ed4be9 100644
+--- a/drivers/net/wireless/ti/wl1251/main.c
++++ b/drivers/net/wireless/ti/wl1251/main.c
+@@ -1201,8 +1201,7 @@ static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
+ WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
+
+ enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc;
+- wl1251_acx_arp_ip_filter(wl, enable, addr);
+-
++ ret = wl1251_acx_arp_ip_filter(wl, enable, addr);
+ if (ret < 0)
+ goto out_sleep;
+ }
+diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
+index fd9f6ce14e8e..58cb86417da0 100644
+--- a/drivers/net/xen-netfront.c
++++ b/drivers/net/xen-netfront.c
+@@ -1986,7 +1986,10 @@ static void netback_changed(struct xenbus_device *dev,
+ case XenbusStateInitialised:
+ case XenbusStateReconfiguring:
+ case XenbusStateReconfigured:
++ break;
++
+ case XenbusStateUnknown:
++ wake_up_all(&module_unload_q);
+ break;
+
+ case XenbusStateInitWait:
+@@ -2117,7 +2120,9 @@ static int xennet_remove(struct xenbus_device *dev)
+ xenbus_switch_state(dev, XenbusStateClosing);
+ wait_event(module_unload_q,
+ xenbus_read_driver_state(dev->otherend) ==
+- XenbusStateClosing);
++ XenbusStateClosing ||
++ xenbus_read_driver_state(dev->otherend) ==
++ XenbusStateUnknown);
+
+ xenbus_switch_state(dev, XenbusStateClosed);
+ wait_event(module_unload_q,
+diff --git a/drivers/of/device.c b/drivers/of/device.c
+index 493b21bd1199..6601cc62a990 100644
+--- a/drivers/of/device.c
++++ b/drivers/of/device.c
+@@ -210,7 +210,7 @@ ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len)
+ str[i] = '_';
+ }
+
+- return tsize;
++ return repend;
+ }
+ EXPORT_SYMBOL_GPL(of_device_get_modalias);
+
+diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
+index 53d15b30636a..e914007f5523 100644
+--- a/drivers/parport/parport_pc.c
++++ b/drivers/parport/parport_pc.c
+@@ -2646,6 +2646,7 @@ enum parport_pc_pci_cards {
+ netmos_9901,
+ netmos_9865,
+ quatech_sppxp100,
++ wch_ch382l,
+ };
+
+
+@@ -2708,6 +2709,7 @@ static struct parport_pc_pci {
+ /* netmos_9901 */ { 1, { { 0, -1 }, } },
+ /* netmos_9865 */ { 1, { { 0, -1 }, } },
+ /* quatech_sppxp100 */ { 1, { { 0, 1 }, } },
++ /* wch_ch382l */ { 1, { { 2, -1 }, } },
+ };
+
+ static const struct pci_device_id parport_pc_pci_tbl[] = {
+@@ -2797,6 +2799,8 @@ static const struct pci_device_id parport_pc_pci_tbl[] = {
+ /* Quatech SPPXP-100 Parallel port PCI ExpressCard */
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_SPPXP_100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, quatech_sppxp100 },
++ /* WCH CH382L PCI-E single parallel port card */
++ { 0x1c00, 0x3050, 0x1c00, 0x3050, 0, 0, wch_ch382l },
+ { 0, } /* terminate list */
+ };
+ MODULE_DEVICE_TABLE(pci, parport_pc_pci_tbl);
+diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
+index b60309ee80ed..031f64da6151 100644
+--- a/drivers/pci/hotplug/acpiphp_glue.c
++++ b/drivers/pci/hotplug/acpiphp_glue.c
+@@ -587,6 +587,7 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot)
+ {
+ unsigned long long sta = 0;
+ struct acpiphp_func *func;
++ u32 dvid;
+
+ list_for_each_entry(func, &slot->funcs, sibling) {
+ if (func->flags & FUNC_HAS_STA) {
+@@ -597,19 +598,27 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot)
+ if (ACPI_SUCCESS(status) && sta)
+ break;
+ } else {
+- u32 dvid;
+-
+- pci_bus_read_config_dword(slot->bus,
+- PCI_DEVFN(slot->device,
+- func->function),
+- PCI_VENDOR_ID, &dvid);
+- if (dvid != 0xffffffff) {
++ if (pci_bus_read_dev_vendor_id(slot->bus,
++ PCI_DEVFN(slot->device, func->function),
++ &dvid, 0)) {
+ sta = ACPI_STA_ALL;
+ break;
+ }
+ }
+ }
+
++ if (!sta) {
++ /*
++ * Check for the slot itself since it may be that the
++ * ACPI slot is a device below PCIe upstream port so in
++ * that case it may not even be reachable yet.
++ */
++ if (pci_bus_read_dev_vendor_id(slot->bus,
++ PCI_DEVFN(slot->device, 0), &dvid, 0)) {
++ sta = ACPI_STA_ALL;
++ }
++ }
++
+ return (unsigned int)sta;
+ }
+
+diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
+index 1363fe636281..afb80eb5a528 100644
+--- a/drivers/pci/pci-driver.c
++++ b/drivers/pci/pci-driver.c
+@@ -450,8 +450,6 @@ static void pci_device_shutdown(struct device *dev)
+
+ if (drv && drv->shutdown)
+ drv->shutdown(pci_dev);
+- pci_msi_shutdown(pci_dev);
+- pci_msix_shutdown(pci_dev);
+
+ #ifdef CONFIG_KEXEC
+ /*
+diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
+index c7dc06636bf6..005fc2478ef4 100644
+--- a/drivers/pci/probe.c
++++ b/drivers/pci/probe.c
+@@ -227,7 +227,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
+ res->flags |= IORESOURCE_ROM_ENABLE;
+ l64 = l & PCI_ROM_ADDRESS_MASK;
+ sz64 = sz & PCI_ROM_ADDRESS_MASK;
+- mask64 = (u32)PCI_ROM_ADDRESS_MASK;
++ mask64 = PCI_ROM_ADDRESS_MASK;
+ }
+
+ if (res->flags & IORESOURCE_MEM_64) {
+diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
+index 7b9e3564fc43..4de72003515f 100644
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -3645,6 +3645,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
+ quirk_dma_func1_alias);
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
+ quirk_dma_func1_alias);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
++ quirk_dma_func1_alias);
+ /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
+ PCI_DEVICE_ID_JMICRON_JMB388_ESD,
+diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
+index 00f32ff6f74e..c03763d68a95 100644
+--- a/drivers/pci/setup-res.c
++++ b/drivers/pci/setup-res.c
+@@ -59,7 +59,7 @@ static void pci_std_update_resource(struct pci_dev *dev, int resno)
+ mask = (u32)PCI_BASE_ADDRESS_IO_MASK;
+ new |= res->flags & ~PCI_BASE_ADDRESS_IO_MASK;
+ } else if (resno == PCI_ROM_RESOURCE) {
+- mask = (u32)PCI_ROM_ADDRESS_MASK;
++ mask = PCI_ROM_ADDRESS_MASK;
+ } else {
+ mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
+ new |= res->flags & ~PCI_BASE_ADDRESS_MEM_MASK;
+diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
+index 18ee2089df4a..db43f8b34e2a 100644
+--- a/drivers/pinctrl/core.c
++++ b/drivers/pinctrl/core.c
+@@ -977,19 +977,16 @@ struct pinctrl_state *pinctrl_lookup_state(struct pinctrl *p,
+ EXPORT_SYMBOL_GPL(pinctrl_lookup_state);
+
+ /**
+- * pinctrl_select_state() - select/activate/program a pinctrl state to HW
++ * pinctrl_commit_state() - select/activate/program a pinctrl state to HW
+ * @p: the pinctrl handle for the device that requests configuration
+ * @state: the state handle to select/activate/program
+ */
+-int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *state)
++static int pinctrl_commit_state(struct pinctrl *p, struct pinctrl_state *state)
+ {
+ struct pinctrl_setting *setting, *setting2;
+ struct pinctrl_state *old_state = p->state;
+ int ret;
+
+- if (p->state == state)
+- return 0;
+-
+ if (p->state) {
+ /*
+ * For each pinmux setting in the old state, forget SW's record
+@@ -1053,6 +1050,19 @@ unapply_new_state:
+
+ return ret;
+ }
++
++/**
++ * pinctrl_select_state() - select/activate/program a pinctrl state to HW
++ * @p: the pinctrl handle for the device that requests configuration
++ * @state: the state handle to select/activate/program
++ */
++int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *state)
++{
++ if (p->state == state)
++ return 0;
++
++ return pinctrl_commit_state(p, state);
++}
+ EXPORT_SYMBOL_GPL(pinctrl_select_state);
+
+ static void devm_pinctrl_release(struct device *dev, void *res)
+@@ -1221,7 +1231,7 @@ void pinctrl_unregister_map(struct pinctrl_map const *map)
+ int pinctrl_force_sleep(struct pinctrl_dev *pctldev)
+ {
+ if (!IS_ERR(pctldev->p) && !IS_ERR(pctldev->hog_sleep))
+- return pinctrl_select_state(pctldev->p, pctldev->hog_sleep);
++ return pinctrl_commit_state(pctldev->p, pctldev->hog_sleep);
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(pinctrl_force_sleep);
+@@ -1233,7 +1243,7 @@ EXPORT_SYMBOL_GPL(pinctrl_force_sleep);
+ int pinctrl_force_default(struct pinctrl_dev *pctldev)
+ {
+ if (!IS_ERR(pctldev->p) && !IS_ERR(pctldev->hog_default))
+- return pinctrl_select_state(pctldev->p, pctldev->hog_default);
++ return pinctrl_commit_state(pctldev->p, pctldev->hog_default);
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(pinctrl_force_default);
+diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
+index abdaed34c728..5ea4c5a72a66 100644
+--- a/drivers/platform/x86/asus-nb-wmi.c
++++ b/drivers/platform/x86/asus-nb-wmi.c
+@@ -99,6 +99,15 @@ static const struct dmi_system_id asus_quirks[] = {
+ */
+ .driver_data = &quirk_asus_wapf4,
+ },
++ {
++ .callback = dmi_matched,
++ .ident = "ASUSTeK COMPUTER INC. X302UA",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
++ DMI_MATCH(DMI_PRODUCT_NAME, "X302UA"),
++ },
++ .driver_data = &quirk_asus_wapf4,
++ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X401U",
+diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
+index dfe1ee89f7c7..922a86787c5c 100644
+--- a/drivers/power/pda_power.c
++++ b/drivers/power/pda_power.c
+@@ -30,9 +30,9 @@ static inline unsigned int get_irq_flags(struct resource *res)
+ static struct device *dev;
+ static struct pda_power_pdata *pdata;
+ static struct resource *ac_irq, *usb_irq;
+-static struct timer_list charger_timer;
+-static struct timer_list supply_timer;
+-static struct timer_list polling_timer;
++static struct delayed_work charger_work;
++static struct delayed_work polling_work;
++static struct delayed_work supply_work;
+ static int polling;
+ static struct power_supply *pda_psy_ac, *pda_psy_usb;
+
+@@ -140,7 +140,7 @@ static void update_charger(void)
+ }
+ }
+
+-static void supply_timer_func(unsigned long unused)
++static void supply_work_func(struct work_struct *work)
+ {
+ if (ac_status == PDA_PSY_TO_CHANGE) {
+ ac_status = new_ac_status;
+@@ -161,11 +161,12 @@ static void psy_changed(void)
+ * Okay, charger set. Now wait a bit before notifying supplicants,
+ * charge power should stabilize.
+ */
+- mod_timer(&supply_timer,
+- jiffies + msecs_to_jiffies(pdata->wait_for_charger));
++ cancel_delayed_work(&supply_work);
++ schedule_delayed_work(&supply_work,
++ msecs_to_jiffies(pdata->wait_for_charger));
+ }
+
+-static void charger_timer_func(unsigned long unused)
++static void charger_work_func(struct work_struct *work)
+ {
+ update_status();
+ psy_changed();
+@@ -184,13 +185,14 @@ static irqreturn_t power_changed_isr(int irq, void *power_supply)
+ * Wait a bit before reading ac/usb line status and setting charger,
+ * because ac/usb status readings may lag from irq.
+ */
+- mod_timer(&charger_timer,
+- jiffies + msecs_to_jiffies(pdata->wait_for_status));
++ cancel_delayed_work(&charger_work);
++ schedule_delayed_work(&charger_work,
++ msecs_to_jiffies(pdata->wait_for_status));
+
+ return IRQ_HANDLED;
+ }
+
+-static void polling_timer_func(unsigned long unused)
++static void polling_work_func(struct work_struct *work)
+ {
+ int changed = 0;
+
+@@ -211,8 +213,9 @@ static void polling_timer_func(unsigned long unused)
+ if (changed)
+ psy_changed();
+
+- mod_timer(&polling_timer,
+- jiffies + msecs_to_jiffies(pdata->polling_interval));
++ cancel_delayed_work(&polling_work);
++ schedule_delayed_work(&polling_work,
++ msecs_to_jiffies(pdata->polling_interval));
+ }
+
+ #if IS_ENABLED(CONFIG_USB_PHY)
+@@ -250,8 +253,9 @@ static int otg_handle_notification(struct notifier_block *nb,
+ * Wait a bit before reading ac/usb line status and setting charger,
+ * because ac/usb status readings may lag from irq.
+ */
+- mod_timer(&charger_timer,
+- jiffies + msecs_to_jiffies(pdata->wait_for_status));
++ cancel_delayed_work(&charger_work);
++ schedule_delayed_work(&charger_work,
++ msecs_to_jiffies(pdata->wait_for_status));
+
+ return NOTIFY_OK;
+ }
+@@ -300,8 +304,8 @@ static int pda_power_probe(struct platform_device *pdev)
+ if (!pdata->ac_max_uA)
+ pdata->ac_max_uA = 500000;
+
+- setup_timer(&charger_timer, charger_timer_func, 0);
+- setup_timer(&supply_timer, supply_timer_func, 0);
++ INIT_DELAYED_WORK(&charger_work, charger_work_func);
++ INIT_DELAYED_WORK(&supply_work, supply_work_func);
+
+ ac_irq = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ac");
+ usb_irq = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "usb");
+@@ -385,9 +389,10 @@ static int pda_power_probe(struct platform_device *pdev)
+
+ if (polling) {
+ dev_dbg(dev, "will poll for status\n");
+- setup_timer(&polling_timer, polling_timer_func, 0);
+- mod_timer(&polling_timer,
+- jiffies + msecs_to_jiffies(pdata->polling_interval));
++ INIT_DELAYED_WORK(&polling_work, polling_work_func);
++ cancel_delayed_work(&polling_work);
++ schedule_delayed_work(&polling_work,
++ msecs_to_jiffies(pdata->polling_interval));
+ }
+
+ if (ac_irq || usb_irq)
+@@ -433,9 +438,9 @@ static int pda_power_remove(struct platform_device *pdev)
+ free_irq(ac_irq->start, pda_psy_ac);
+
+ if (polling)
+- del_timer_sync(&polling_timer);
+- del_timer_sync(&charger_timer);
+- del_timer_sync(&supply_timer);
++ cancel_delayed_work_sync(&polling_work);
++ cancel_delayed_work_sync(&charger_work);
++ cancel_delayed_work_sync(&supply_work);
+
+ if (pdata->is_usb_online)
+ power_supply_unregister(pda_psy_usb);
+diff --git a/drivers/powercap/powercap_sys.c b/drivers/powercap/powercap_sys.c
+index 84419af16f77..fd12ccc11e26 100644
+--- a/drivers/powercap/powercap_sys.c
++++ b/drivers/powercap/powercap_sys.c
+@@ -538,6 +538,7 @@ struct powercap_zone *powercap_register_zone(
+
+ power_zone->id = result;
+ idr_init(&power_zone->idr);
++ result = -ENOMEM;
+ power_zone->name = kstrdup(name, GFP_KERNEL);
+ if (!power_zone->name)
+ goto err_name_alloc;
+diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
+index cabd7d8e05cc..3e07855bbea7 100644
+--- a/drivers/pwm/pwm-tegra.c
++++ b/drivers/pwm/pwm-tegra.c
+@@ -69,6 +69,7 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct tegra_pwm_chip *pc = to_tegra_pwm_chip(chip);
+ unsigned long long c;
+ unsigned long rate, hz;
++ unsigned long long ns100 = NSEC_PER_SEC;
+ u32 val = 0;
+ int err;
+
+@@ -87,9 +88,11 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
+ * cycles at the PWM clock rate will take period_ns nanoseconds.
+ */
+ rate = clk_get_rate(pc->clk) >> PWM_DUTY_WIDTH;
+- hz = NSEC_PER_SEC / period_ns;
+
+- rate = (rate + (hz / 2)) / hz;
++ /* Consider precision in PWM_SCALE_WIDTH rate calculation */
++ ns100 *= 100;
++ hz = DIV_ROUND_CLOSEST_ULL(ns100, period_ns);
++ rate = DIV_ROUND_CLOSEST(rate * 100, hz);
+
+ /*
+ * Since the actual PWM divider is the register's frequency divider
+diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
+index 038da40e4038..f84c0506afd0 100644
+--- a/drivers/rtc/interface.c
++++ b/drivers/rtc/interface.c
+@@ -262,6 +262,13 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
+ missing = year;
+ }
+
++ /* Can't proceed if alarm is still invalid after replacing
++ * missing fields.
++ */
++ err = rtc_valid_tm(&alarm->time);
++ if (err)
++ goto done;
++
+ /* with luck, no rollover is needed */
+ t_now = rtc_tm_to_time64(&now);
+ t_alm = rtc_tm_to_time64(&alarm->time);
+@@ -313,9 +320,9 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
+ dev_warn(&rtc->dev, "alarm rollover not handled\n");
+ }
+
+-done:
+ err = rtc_valid_tm(&alarm->time);
+
++done:
+ if (err) {
+ dev_warn(&rtc->dev, "invalid alarm value: %d-%d-%d %d:%d:%d\n",
+ alarm->time.tm_year + 1900, alarm->time.tm_mon + 1,
+diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
+index 167783fa7ac1..216ad22996b8 100644
+--- a/drivers/rtc/rtc-ds1374.c
++++ b/drivers/rtc/rtc-ds1374.c
+@@ -527,6 +527,10 @@ static long ds1374_wdt_ioctl(struct file *file, unsigned int cmd,
+ if (get_user(new_margin, (int __user *)arg))
+ return -EFAULT;
+
++ /* the hardware's tick rate is 4096 Hz, so
++ * the counter value needs to be scaled accordingly
++ */
++ new_margin <<= 12;
+ if (new_margin < 1 || new_margin > 16777216)
+ return -EINVAL;
+
+@@ -535,7 +539,8 @@ static long ds1374_wdt_ioctl(struct file *file, unsigned int cmd,
+ ds1374_wdt_ping();
+ /* fallthrough */
+ case WDIOC_GETTIMEOUT:
+- return put_user(wdt_margin, (int __user *)arg);
++ /* when returning ... inverse is true */
++ return put_user((wdt_margin >> 12), (int __user *)arg);
+ case WDIOC_SETOPTIONS:
+ if (copy_from_user(&options, (int __user *)arg, sizeof(int)))
+ return -EFAULT;
+@@ -543,14 +548,15 @@ static long ds1374_wdt_ioctl(struct file *file, unsigned int cmd,
+ if (options & WDIOS_DISABLECARD) {
+ pr_info("disable watchdog\n");
+ ds1374_wdt_disable();
++ return 0;
+ }
+
+ if (options & WDIOS_ENABLECARD) {
+ pr_info("enable watchdog\n");
+ ds1374_wdt_settimeout(wdt_margin);
+ ds1374_wdt_ping();
++ return 0;
+ }
+-
+ return -EINVAL;
+ }
+ return -ENOTTY;
+diff --git a/drivers/rtc/rtc-opal.c b/drivers/rtc/rtc-opal.c
+index 482af0dda0b0..ff217034f6d6 100644
+--- a/drivers/rtc/rtc-opal.c
++++ b/drivers/rtc/rtc-opal.c
+@@ -150,6 +150,16 @@ static int opal_get_tpo_time(struct device *dev, struct rtc_wkalrm *alarm)
+
+ y_m_d = be32_to_cpu(__y_m_d);
+ h_m_s_ms = ((u64)be32_to_cpu(__h_m) << 32);
++
++ /* check if no alarm is set */
++ if (y_m_d == 0 && h_m_s_ms == 0) {
++ pr_debug("No alarm is set\n");
++ rc = -ENOENT;
++ goto exit;
++ } else {
++ pr_debug("Alarm set to %x %llx\n", y_m_d, h_m_s_ms);
++ }
++
+ opal_to_tm(y_m_d, h_m_s_ms, &alarm->time);
+
+ exit:
+diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
+index e3bf885f4a6c..d5f02c3da878 100644
+--- a/drivers/s390/cio/chsc.c
++++ b/drivers/s390/cio/chsc.c
+@@ -362,6 +362,7 @@ static void chsc_process_sei_link_incident(struct chsc_sei_nt0_area *sei_area)
+
+ static void chsc_process_sei_res_acc(struct chsc_sei_nt0_area *sei_area)
+ {
++ struct channel_path *chp;
+ struct chp_link link;
+ struct chp_id chpid;
+ int status;
+@@ -374,10 +375,17 @@ static void chsc_process_sei_res_acc(struct chsc_sei_nt0_area *sei_area)
+ chpid.id = sei_area->rsid;
+ /* allocate a new channel path structure, if needed */
+ status = chp_get_status(chpid);
+- if (status < 0)
+- chp_new(chpid);
+- else if (!status)
++ if (!status)
+ return;
++
++ if (status < 0) {
++ chp_new(chpid);
++ } else {
++ chp = chpid_to_chp(chpid);
++ mutex_lock(&chp->lock);
++ chp_update_desc(chp);
++ mutex_unlock(&chp->lock);
++ }
+ memset(&link, 0, sizeof(struct chp_link));
+ link.chpid = chpid;
+ if ((sei_area->vf & 0xc0) != 0) {
+diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
+index 848e3b64ea6e..fb7298920c8c 100644
+--- a/drivers/s390/cio/qdio_main.c
++++ b/drivers/s390/cio/qdio_main.c
+@@ -126,7 +126,7 @@ static inline int qdio_check_ccq(struct qdio_q *q, unsigned int ccq)
+ static int qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
+ int start, int count, int auto_ack)
+ {
+- int rc, tmp_count = count, tmp_start = start, nr = q->nr, retried = 0;
++ int rc, tmp_count = count, tmp_start = start, nr = q->nr;
+ unsigned int ccq = 0;
+
+ qperf_inc(q, eqbs);
+@@ -149,14 +149,7 @@ again:
+ qperf_inc(q, eqbs_partial);
+ DBF_DEV_EVENT(DBF_WARN, q->irq_ptr, "EQBS part:%02x",
+ tmp_count);
+- /*
+- * Retry once, if that fails bail out and process the
+- * extracted buffers before trying again.
+- */
+- if (!retried++)
+- goto again;
+- else
+- return count - tmp_count;
++ return count - tmp_count;
+ }
+
+ DBF_ERROR("%4x EQBS ERROR", SCH_NO(q));
+@@ -212,7 +205,10 @@ again:
+ return 0;
+ }
+
+-/* returns number of examined buffers and their common state in *state */
++/*
++ * Returns number of examined buffers and their common state in *state.
++ * Requested number of buffers-to-examine must be > 0.
++ */
+ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
+ unsigned char *state, unsigned int count,
+ int auto_ack, int merge_pending)
+@@ -223,17 +219,23 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
+ if (is_qebsm(q))
+ return qdio_do_eqbs(q, state, bufnr, count, auto_ack);
+
+- for (i = 0; i < count; i++) {
+- if (!__state) {
+- __state = q->slsb.val[bufnr];
+- if (merge_pending && __state == SLSB_P_OUTPUT_PENDING)
+- __state = SLSB_P_OUTPUT_EMPTY;
+- } else if (merge_pending) {
+- if ((q->slsb.val[bufnr] & __state) != __state)
+- break;
+- } else if (q->slsb.val[bufnr] != __state)
+- break;
++ /* get initial state: */
++ __state = q->slsb.val[bufnr];
++ if (merge_pending && __state == SLSB_P_OUTPUT_PENDING)
++ __state = SLSB_P_OUTPUT_EMPTY;
++
++ for (i = 1; i < count; i++) {
+ bufnr = next_buf(bufnr);
++
++ /* merge PENDING into EMPTY: */
++ if (merge_pending &&
++ q->slsb.val[bufnr] == SLSB_P_OUTPUT_PENDING &&
++ __state == SLSB_P_OUTPUT_EMPTY)
++ continue;
++
++ /* stop if next state differs from initial state: */
++ if (q->slsb.val[bufnr] != __state)
++ break;
+ }
+ *state = __state;
+ return i;
+diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
+index 9e9964ca696b..81d23bbbd316 100644
+--- a/drivers/s390/net/qeth_core_main.c
++++ b/drivers/s390/net/qeth_core_main.c
+@@ -517,8 +517,7 @@ static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
+ queue == card->qdio.no_in_queues - 1;
+ }
+
+-
+-static int qeth_issue_next_read(struct qeth_card *card)
++static int __qeth_issue_next_read(struct qeth_card *card)
+ {
+ int rc;
+ struct qeth_cmd_buffer *iob;
+@@ -549,6 +548,17 @@ static int qeth_issue_next_read(struct qeth_card *card)
+ return rc;
+ }
+
++static int qeth_issue_next_read(struct qeth_card *card)
++{
++ int ret;
++
++ spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
++ ret = __qeth_issue_next_read(card);
++ spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
++
++ return ret;
++}
++
+ static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
+ {
+ struct qeth_reply *reply;
+@@ -951,7 +961,7 @@ void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
+ spin_lock_irqsave(&card->thread_mask_lock, flags);
+ card->thread_running_mask &= ~thread;
+ spin_unlock_irqrestore(&card->thread_mask_lock, flags);
+- wake_up(&card->wait_q);
++ wake_up_all(&card->wait_q);
+ }
+ EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
+
+@@ -1155,6 +1165,7 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
+ }
+ rc = qeth_get_problem(cdev, irb);
+ if (rc) {
++ card->read_or_write_problem = 1;
+ qeth_clear_ipacmd_list(card);
+ qeth_schedule_recovery(card);
+ goto out;
+@@ -1173,7 +1184,7 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
+ return;
+ if (channel == &card->read &&
+ channel->state == CH_STATE_UP)
+- qeth_issue_next_read(card);
++ __qeth_issue_next_read(card);
+
+ iob = channel->iob;
+ index = channel->buf_no;
+@@ -5017,8 +5028,6 @@ static void qeth_core_free_card(struct qeth_card *card)
+ QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
+ qeth_clean_channel(&card->read);
+ qeth_clean_channel(&card->write);
+- if (card->dev)
+- free_netdev(card->dev);
+ kfree(card->ip_tbd_list);
+ qeth_free_qdio_buffers(card);
+ unregister_service_level(&card->qeth_service_level);
+diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
+index b0413f5611cf..3f79f83451ae 100644
+--- a/drivers/s390/net/qeth_l2_main.c
++++ b/drivers/s390/net/qeth_l2_main.c
+@@ -913,8 +913,8 @@ static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
+ qeth_l2_set_offline(cgdev);
+
+ if (card->dev) {
+- netif_napi_del(&card->napi);
+ unregister_netdev(card->dev);
++ free_netdev(card->dev);
+ card->dev = NULL;
+ }
+ return;
+diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
+index 6dbf0d5a2a22..34c8a4d20498 100644
+--- a/drivers/s390/net/qeth_l3_main.c
++++ b/drivers/s390/net/qeth_l3_main.c
+@@ -3358,8 +3358,8 @@ static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
+ qeth_l3_set_offline(cgdev);
+
+ if (card->dev) {
+- netif_napi_del(&card->napi);
+ unregister_netdev(card->dev);
++ free_netdev(card->dev);
+ card->dev = NULL;
+ }
+
+diff --git a/drivers/scsi/bnx2fc/bnx2fc.h b/drivers/scsi/bnx2fc/bnx2fc.h
+index 1346e052e03c..8009158a6639 100644
+--- a/drivers/scsi/bnx2fc/bnx2fc.h
++++ b/drivers/scsi/bnx2fc/bnx2fc.h
+@@ -191,6 +191,7 @@ struct bnx2fc_hba {
+ struct bnx2fc_cmd_mgr *cmd_mgr;
+ spinlock_t hba_lock;
+ struct mutex hba_mutex;
++ struct mutex hba_stats_mutex;
+ unsigned long adapter_state;
+ #define ADAPTER_STATE_UP 0
+ #define ADAPTER_STATE_GOING_DOWN 1
+diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
+index 98d06d151958..d477c687af55 100644
+--- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
++++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
+@@ -641,15 +641,17 @@ static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
+ if (!fw_stats)
+ return NULL;
+
++ mutex_lock(&hba->hba_stats_mutex);
++
+ bnx2fc_stats = fc_get_host_stats(shost);
+
+ init_completion(&hba->stat_req_done);
+ if (bnx2fc_send_stat_req(hba))
+- return bnx2fc_stats;
++ goto unlock_stats_mutex;
+ rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
+ if (!rc) {
+ BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
+- return bnx2fc_stats;
++ goto unlock_stats_mutex;
+ }
+ BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
+ bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
+@@ -671,6 +673,9 @@ static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
+
+ memcpy(&hba->prev_stats, hba->stats_buffer,
+ sizeof(struct fcoe_statistics_params));
++
++unlock_stats_mutex:
++ mutex_unlock(&hba->hba_stats_mutex);
+ return bnx2fc_stats;
+ }
+
+@@ -1303,6 +1308,7 @@ static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
+ }
+ spin_lock_init(&hba->hba_lock);
+ mutex_init(&hba->hba_mutex);
++ mutex_init(&hba->hba_stats_mutex);
+
+ hba->cnic = cnic;
+
+diff --git a/drivers/scsi/csiostor/csio_hw.c b/drivers/scsi/csiostor/csio_hw.c
+index 2e66f34ebb79..13580192691f 100644
+--- a/drivers/scsi/csiostor/csio_hw.c
++++ b/drivers/scsi/csiostor/csio_hw.c
+@@ -1769,7 +1769,6 @@ csio_hw_use_fwconfig(struct csio_hw *hw, int reset, u32 *fw_cfg_param)
+ goto bye;
+ }
+
+- mempool_free(mbp, hw->mb_mempool);
+ if (finicsum != cfcsum) {
+ csio_warn(hw,
+ "Config File checksum mismatch: csum=%#x, computed=%#x\n",
+@@ -1780,6 +1779,10 @@ csio_hw_use_fwconfig(struct csio_hw *hw, int reset, u32 *fw_cfg_param)
+ rv = csio_hw_validate_caps(hw, mbp);
+ if (rv != 0)
+ goto bye;
++
++ mempool_free(mbp, hw->mb_mempool);
++ mbp = NULL;
++
+ /*
+ * Note that we're operating with parameters
+ * not supplied by the driver, rather than from hard-wired
+diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
+index cd52c070701b..3a9648d7f441 100644
+--- a/drivers/scsi/ipr.c
++++ b/drivers/scsi/ipr.c
+@@ -835,8 +835,10 @@ static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
+
+ qc->err_mask |= AC_ERR_OTHER;
+ sata_port->ioasa.status |= ATA_BUSY;
+- list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ ata_qc_complete(qc);
++ if (ipr_cmd->eh_comp)
++ complete(ipr_cmd->eh_comp);
++ list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ }
+
+ /**
+@@ -5859,8 +5861,10 @@ static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
+ res->in_erp = 0;
+ }
+ scsi_dma_unmap(ipr_cmd->scsi_cmd);
+- list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ scsi_cmd->scsi_done(scsi_cmd);
++ if (ipr_cmd->eh_comp)
++ complete(ipr_cmd->eh_comp);
++ list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ }
+
+ /**
+@@ -6250,8 +6254,10 @@ static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
+ }
+
+ scsi_dma_unmap(ipr_cmd->scsi_cmd);
+- list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ scsi_cmd->scsi_done(scsi_cmd);
++ if (ipr_cmd->eh_comp)
++ complete(ipr_cmd->eh_comp);
++ list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ }
+
+ /**
+@@ -6277,8 +6283,10 @@ static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
+ scsi_dma_unmap(scsi_cmd);
+
+ spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
+- list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ scsi_cmd->scsi_done(scsi_cmd);
++ if (ipr_cmd->eh_comp)
++ complete(ipr_cmd->eh_comp);
++ list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
+ } else {
+ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
+index 8826110991eb..e14bfcd37692 100644
+--- a/drivers/scsi/libiscsi.c
++++ b/drivers/scsi/libiscsi.c
+@@ -1695,6 +1695,15 @@ int iscsi_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc)
+ */
+ switch (session->state) {
+ case ISCSI_STATE_FAILED:
++ /*
++ * cmds should fail during shutdown, if the session
++ * state is bad, allowing completion to happen
++ */
++ if (unlikely(system_state != SYSTEM_RUNNING)) {
++ reason = FAILURE_SESSION_FAILED;
++ sc->result = DID_NO_CONNECT << 16;
++ break;
++ }
+ case ISCSI_STATE_IN_RECOVERY:
+ reason = FAILURE_SESSION_IN_RECOVERY;
+ sc->result = DID_IMM_RETRY << 16;
+@@ -1979,6 +1988,19 @@ static enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc)
+ }
+
+ if (session->state != ISCSI_STATE_LOGGED_IN) {
++ /*
++ * During shutdown, if session is prematurely disconnected,
++ * recovery won't happen and there will be hung cmds. Not
++ * handling cmds would trigger EH, also bad in this case.
++ * Instead, handle cmd, allow completion to happen and let
++ * upper layer to deal with the result.
++ */
++ if (unlikely(system_state != SYSTEM_RUNNING)) {
++ sc->result = DID_NO_CONNECT << 16;
++ ISCSI_DBG_EH(session, "sc on shutdown, handled\n");
++ rc = BLK_EH_HANDLED;
++ goto done;
++ }
+ /*
+ * We are probably in the middle of iscsi recovery so let
+ * that complete and handle the error.
+@@ -2083,7 +2105,7 @@ done:
+ task->last_timeout = jiffies;
+ spin_unlock(&session->frwd_lock);
+ ISCSI_DBG_EH(session, "return %s\n", rc == BLK_EH_RESET_TIMER ?
+- "timer reset" : "nh");
++ "timer reset" : "shutdown or nh");
+ return rc;
+ }
+
+diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
+index 022bb6e10d98..12886f96b286 100644
+--- a/drivers/scsi/libsas/sas_expander.c
++++ b/drivers/scsi/libsas/sas_expander.c
+@@ -282,6 +282,7 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp)
+ phy->phy->minimum_linkrate = dr->pmin_linkrate;
+ phy->phy->maximum_linkrate = dr->pmax_linkrate;
+ phy->phy->negotiated_linkrate = phy->linkrate;
++ phy->phy->enabled = (phy->linkrate != SAS_PHY_DISABLED);
+
+ skip:
+ if (new_phy)
+@@ -675,7 +676,7 @@ int sas_smp_get_phy_events(struct sas_phy *phy)
+ res = smp_execute_task(dev, req, RPEL_REQ_SIZE,
+ resp, RPEL_RESP_SIZE);
+
+- if (!res)
++ if (res)
+ goto out;
+
+ phy->invalid_dword_count = scsi_to_u32(&resp[12]);
+@@ -684,6 +685,7 @@ int sas_smp_get_phy_events(struct sas_phy *phy)
+ phy->phy_reset_problem_count = scsi_to_u32(&resp[24]);
+
+ out:
++ kfree(req);
+ kfree(resp);
+ return res;
+
+diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
+index 625e3ee877ee..570332956ae7 100644
+--- a/drivers/scsi/lpfc/lpfc_sli.c
++++ b/drivers/scsi/lpfc/lpfc_sli.c
+@@ -13517,6 +13517,9 @@ lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
+ case LPFC_Q_CREATE_VERSION_1:
+ bf_set(lpfc_mbx_wq_create_wqe_count, &wq_create->u.request_1,
+ wq->entry_count);
++ bf_set(lpfc_mbox_hdr_version, &shdr->request,
++ LPFC_Q_CREATE_VERSION_1);
++
+ switch (wq->entry_size) {
+ default:
+ case 64:
+diff --git a/drivers/scsi/mac_esp.c b/drivers/scsi/mac_esp.c
+index 14c0334f41e4..26c67c42985c 100644
+--- a/drivers/scsi/mac_esp.c
++++ b/drivers/scsi/mac_esp.c
+@@ -55,6 +55,7 @@ struct mac_esp_priv {
+ int error;
+ };
+ static struct esp *esp_chips[2];
++static DEFINE_SPINLOCK(esp_chips_lock);
+
+ #define MAC_ESP_GET_PRIV(esp) ((struct mac_esp_priv *) \
+ platform_get_drvdata((struct platform_device *) \
+@@ -562,15 +563,18 @@ static int esp_mac_probe(struct platform_device *dev)
+ }
+
+ host->irq = IRQ_MAC_SCSI;
+- esp_chips[dev->id] = esp;
+- mb();
+- if (esp_chips[!dev->id] == NULL) {
+- err = request_irq(host->irq, mac_scsi_esp_intr, 0, "ESP", NULL);
+- if (err < 0) {
+- esp_chips[dev->id] = NULL;
+- goto fail_free_priv;
+- }
++
++ /* The request_irq() call is intended to succeed for the first device
++ * and fail for the second device.
++ */
++ err = request_irq(host->irq, mac_scsi_esp_intr, 0, "ESP", NULL);
++ spin_lock(&esp_chips_lock);
++ if (err < 0 && esp_chips[!dev->id] == NULL) {
++ spin_unlock(&esp_chips_lock);
++ goto fail_free_priv;
+ }
++ esp_chips[dev->id] = esp;
++ spin_unlock(&esp_chips_lock);
+
+ err = scsi_esp_register(esp, &dev->dev);
+ if (err)
+@@ -579,8 +583,13 @@ static int esp_mac_probe(struct platform_device *dev)
+ return 0;
+
+ fail_free_irq:
+- if (esp_chips[!dev->id] == NULL)
++ spin_lock(&esp_chips_lock);
++ esp_chips[dev->id] = NULL;
++ if (esp_chips[!dev->id] == NULL) {
++ spin_unlock(&esp_chips_lock);
+ free_irq(host->irq, esp);
++ } else
++ spin_unlock(&esp_chips_lock);
+ fail_free_priv:
+ kfree(mep);
+ fail_free_command_block:
+@@ -599,9 +608,13 @@ static int esp_mac_remove(struct platform_device *dev)
+
+ scsi_esp_unregister(esp);
+
++ spin_lock(&esp_chips_lock);
+ esp_chips[dev->id] = NULL;
+- if (!(esp_chips[0] || esp_chips[1]))
++ if (esp_chips[!dev->id] == NULL) {
++ spin_unlock(&esp_chips_lock);
+ free_irq(irq, NULL);
++ } else
++ spin_unlock(&esp_chips_lock);
+
+ kfree(mep);
+
+diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
+index 55df57341858..17c12263dbd1 100644
+--- a/drivers/scsi/scsi_devinfo.c
++++ b/drivers/scsi/scsi_devinfo.c
+@@ -180,7 +180,7 @@ static struct {
+ {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+ {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+ {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
+- {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
++ {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */
+ {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
+ {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
+ {"HP", "C1557A", NULL, BLIST_FORCELUN},
+diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
+index a678dd10905f..1977738cb0f5 100644
+--- a/drivers/scsi/sd.c
++++ b/drivers/scsi/sd.c
+@@ -1811,6 +1811,8 @@ sd_spinup_disk(struct scsi_disk *sdkp)
+ break; /* standby */
+ if (sshdr.asc == 4 && sshdr.ascq == 0xc)
+ break; /* unavailable */
++ if (sshdr.asc == 4 && sshdr.ascq == 0x1b)
++ break; /* sanitize in progress */
+ /*
+ * Issue command to spin up drive when not ready
+ */
+diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
+index dcb0d76d7312..2ecf9844eb2e 100644
+--- a/drivers/scsi/ses.c
++++ b/drivers/scsi/ses.c
+@@ -528,7 +528,6 @@ static void ses_enclosure_data_process(struct enclosure_device *edev,
+ ecomp = &edev->component[components++];
+
+ if (!IS_ERR(ecomp)) {
+- ses_get_power_status(edev, ecomp);
+ if (addl_desc_ptr)
+ ses_process_descriptor(
+ ecomp,
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index 2589a75f0810..b03ca046c79f 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -535,6 +535,7 @@ sg_read(struct file *filp, char __user *buf, size_t count, loff_t * ppos)
+ } else
+ count = (old_hdr->result == 0) ? 0 : -EIO;
+ sg_finish_rem_req(srp);
++ sg_remove_request(sfp, srp);
+ retval = count;
+ free_old_hdr:
+ kfree(old_hdr);
+@@ -575,6 +576,7 @@ sg_new_read(Sg_fd * sfp, char __user *buf, size_t count, Sg_request * srp)
+ }
+ err_out:
+ err2 = sg_finish_rem_req(srp);
++ sg_remove_request(sfp, srp);
+ return err ? : err2 ? : count;
+ }
+
+@@ -674,18 +676,14 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
+ * is a non-zero input_size, so emit a warning.
+ */
+ if (hp->dxfer_direction == SG_DXFER_TO_FROM_DEV) {
+- static char cmd[TASK_COMM_LEN];
+- if (strcmp(current->comm, cmd)) {
+- printk_ratelimited(KERN_WARNING
+- "sg_write: data in/out %d/%d bytes "
+- "for SCSI command 0x%x-- guessing "
+- "data in;\n program %s not setting "
+- "count and/or reply_len properly\n",
+- old_hdr.reply_len - (int)SZ_SG_HEADER,
+- input_size, (unsigned int) cmnd[0],
+- current->comm);
+- strcpy(cmd, current->comm);
+- }
++ printk_ratelimited(KERN_WARNING
++ "sg_write: data in/out %d/%d bytes "
++ "for SCSI command 0x%x-- guessing "
++ "data in;\n program %s not setting "
++ "count and/or reply_len properly\n",
++ old_hdr.reply_len - (int)SZ_SG_HEADER,
++ input_size, (unsigned int) cmnd[0],
++ current->comm);
+ }
+ k = sg_common_write(sfp, srp, cmnd, sfp->timeout, blocking);
+ return (k < 0) ? k : count;
+@@ -764,6 +762,35 @@ sg_new_write(Sg_fd *sfp, struct file *file, const char __user *buf,
+ return count;
+ }
+
++static bool sg_is_valid_dxfer(sg_io_hdr_t *hp)
++{
++ switch (hp->dxfer_direction) {
++ case SG_DXFER_NONE:
++ if (hp->dxferp || hp->dxfer_len > 0)
++ return false;
++ return true;
++ case SG_DXFER_FROM_DEV:
++ /*
++ * for SG_DXFER_FROM_DEV we always set dxfer_len to > 0. dxferp
++ * can either be NULL or != NULL so there's no point in checking
++ * it either. So just return true.
++ */
++ return true;
++ case SG_DXFER_TO_DEV:
++ case SG_DXFER_TO_FROM_DEV:
++ if (!hp->dxferp || hp->dxfer_len == 0)
++ return false;
++ return true;
++ case SG_DXFER_UNKNOWN:
++ if ((!hp->dxferp && hp->dxfer_len) ||
++ (hp->dxferp && hp->dxfer_len == 0))
++ return false;
++ return true;
++ default:
++ return false;
++ }
++}
++
+ static int
+ sg_common_write(Sg_fd * sfp, Sg_request * srp,
+ unsigned char *cmnd, int timeout, int blocking)
+@@ -784,17 +811,22 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
+ "sg_common_write: scsi opcode=0x%02x, cmd_size=%d\n",
+ (int) cmnd[0], (int) hp->cmd_len));
+
++ if (!sg_is_valid_dxfer(hp))
++ return -EINVAL;
++
+ k = sg_start_req(srp, cmnd);
+ if (k) {
+ SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_common_write: start_req err=%d\n", k));
+ sg_finish_rem_req(srp);
++ sg_remove_request(sfp, srp);
+ return k; /* probably out of space --> ENOMEM */
+ }
+ if (atomic_read(&sdp->detaching)) {
+ if (srp->bio)
+ blk_end_request_all(srp->rq, -EIO);
+ sg_finish_rem_req(srp);
++ sg_remove_request(sfp, srp);
+ return -ENODEV;
+ }
+
+@@ -1284,6 +1316,7 @@ sg_rq_end_io_usercontext(struct work_struct *work)
+ struct sg_fd *sfp = srp->parentfp;
+
+ sg_finish_rem_req(srp);
++ sg_remove_request(sfp, srp);
+ kref_put(&sfp->f_ref, sg_remove_sfp);
+ }
+
+@@ -1828,8 +1861,6 @@ sg_finish_rem_req(Sg_request *srp)
+ else
+ sg_remove_scat(sfp, req_schp);
+
+- sg_remove_request(sfp, srp);
+-
+ return ret;
+ }
+
+@@ -2066,11 +2097,12 @@ sg_get_rq_mark(Sg_fd * sfp, int pack_id)
+ if ((1 == resp->done) && (!resp->sg_io_owned) &&
+ ((-1 == pack_id) || (resp->header.pack_id == pack_id))) {
+ resp->done = 2; /* guard against other readers */
+- break;
++ write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
++ return resp;
+ }
+ }
+ write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
+- return resp;
++ return NULL;
+ }
+
+ /* always adds to end of list */
+@@ -2176,12 +2208,17 @@ sg_remove_sfp_usercontext(struct work_struct *work)
+ struct sg_fd *sfp = container_of(work, struct sg_fd, ew.work);
+ struct sg_device *sdp = sfp->parentdp;
+ Sg_request *srp;
++ unsigned long iflags;
+
+ /* Cleanup any responses which were never read(). */
++ write_lock_irqsave(&sfp->rq_list_lock, iflags);
+ while (!list_empty(&sfp->rq_list)) {
+ srp = list_first_entry(&sfp->rq_list, Sg_request, entry);
+ sg_finish_rem_req(srp);
++ list_del(&srp->entry);
++ srp->parentfp = NULL;
+ }
++ write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
+
+ if (sfp->reserve.bufflen > 0) {
+ SCSI_LOG_TIMEOUT(6, sg_printk(KERN_INFO, sdp,
+diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
+index d836414c920d..ac2b06a7142e 100644
+--- a/drivers/scsi/virtio_scsi.c
++++ b/drivers/scsi/virtio_scsi.c
+@@ -28,6 +28,7 @@
+ #include <scsi/scsi_device.h>
+ #include <scsi/scsi_cmnd.h>
+ #include <scsi/scsi_tcq.h>
++#include <scsi/scsi_devinfo.h>
+ #include <linux/seqlock.h>
+
+ #define VIRTIO_SCSI_MEMPOOL_SZ 64
+@@ -699,6 +700,28 @@ static int virtscsi_device_reset(struct scsi_cmnd *sc)
+ return virtscsi_tmf(vscsi, cmd);
+ }
+
++static int virtscsi_device_alloc(struct scsi_device *sdevice)
++{
++ /*
++ * Passed through SCSI targets (e.g. with qemu's 'scsi-block')
++ * may have transfer limits which come from the host SCSI
++ * controller or something on the host side other than the
++ * target itself.
++ *
++ * To make this work properly, the hypervisor can adjust the
++ * target's VPD information to advertise these limits. But
++ * for that to work, the guest has to look at the VPD pages,
++ * which we won't do by default if it is an SPC-2 device, even
++ * if it does actually support it.
++ *
++ * So, set the blist to always try to read the VPD pages.
++ */
++ sdevice->sdev_bflags = BLIST_TRY_VPD_PAGES;
++
++ return 0;
++}
++
++
+ /**
+ * virtscsi_change_queue_depth() - Change a virtscsi target's queue depth
+ * @sdev: Virtscsi target whose queue depth to change
+@@ -770,6 +793,7 @@ static struct scsi_host_template virtscsi_host_template_single = {
+ .change_queue_depth = virtscsi_change_queue_depth,
+ .eh_abort_handler = virtscsi_abort,
+ .eh_device_reset_handler = virtscsi_device_reset,
++ .slave_alloc = virtscsi_device_alloc,
+
+ .can_queue = 1024,
+ .dma_boundary = UINT_MAX,
+@@ -790,6 +814,7 @@ static struct scsi_host_template virtscsi_host_template_multi = {
+ .eh_abort_handler = virtscsi_abort,
+ .eh_device_reset_handler = virtscsi_device_reset,
+
++ .slave_alloc = virtscsi_device_alloc,
+ .can_queue = 1024,
+ .dma_boundary = UINT_MAX,
+ .use_clustering = ENABLE_CLUSTERING,
+diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
+index 7edede6e024b..d075ee4de8b5 100644
+--- a/drivers/spi/spi-dw-mmio.c
++++ b/drivers/spi/spi-dw-mmio.c
+@@ -121,8 +121,8 @@ static int dw_spi_mmio_remove(struct platform_device *pdev)
+ {
+ struct dw_spi_mmio *dwsmmio = platform_get_drvdata(pdev);
+
+- clk_disable_unprepare(dwsmmio->clk);
+ dw_spi_remove_host(&dwsmmio->dws);
++ clk_disable_unprepare(dwsmmio->clk);
+
+ return 0;
+ }
+diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
+index d1a5b9fc3eba..f1c1d84f9268 100644
+--- a/drivers/spi/spi-omap2-mcspi.c
++++ b/drivers/spi/spi-omap2-mcspi.c
+@@ -436,6 +436,8 @@ omap2_mcspi_rx_dma(struct spi_device *spi, struct spi_transfer *xfer,
+ int elements = 0;
+ int word_len, element_count;
+ struct omap2_mcspi_cs *cs = spi->controller_state;
++ void __iomem *chstat_reg = cs->base + OMAP2_MCSPI_CHSTAT0;
++
+ mcspi = spi_master_get_devdata(spi->master);
+ mcspi_dma = &mcspi->dma_channels[spi->chip_select];
+ count = xfer->len;
+@@ -496,8 +498,8 @@ omap2_mcspi_rx_dma(struct spi_device *spi, struct spi_transfer *xfer,
+ if (l & OMAP2_MCSPI_CHCONF_TURBO) {
+ elements--;
+
+- if (likely(mcspi_read_cs_reg(spi, OMAP2_MCSPI_CHSTAT0)
+- & OMAP2_MCSPI_CHSTAT_RXS)) {
++ if (!mcspi_wait_for_reg_bit(chstat_reg,
++ OMAP2_MCSPI_CHSTAT_RXS)) {
+ u32 w;
+
+ w = mcspi_read_cs_reg(spi, OMAP2_MCSPI_RX0);
+@@ -515,8 +517,7 @@ omap2_mcspi_rx_dma(struct spi_device *spi, struct spi_transfer *xfer,
+ return count;
+ }
+ }
+- if (likely(mcspi_read_cs_reg(spi, OMAP2_MCSPI_CHSTAT0)
+- & OMAP2_MCSPI_CHSTAT_RXS)) {
++ if (!mcspi_wait_for_reg_bit(chstat_reg, OMAP2_MCSPI_CHSTAT_RXS)) {
+ u32 w;
+
+ w = mcspi_read_cs_reg(spi, OMAP2_MCSPI_RX0);
+diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c
+index e77add01b0e9..48888ab630c2 100644
+--- a/drivers/spi/spi-sun6i.c
++++ b/drivers/spi/spi-sun6i.c
+@@ -457,7 +457,7 @@ err_free_master:
+
+ static int sun6i_spi_remove(struct platform_device *pdev)
+ {
+- pm_runtime_disable(&pdev->dev);
++ pm_runtime_force_suspend(&pdev->dev);
+
+ return 0;
+ }
+diff --git a/drivers/staging/speakup/kobjects.c b/drivers/staging/speakup/kobjects.c
+index 0211df60004a..4bd93e584075 100644
+--- a/drivers/staging/speakup/kobjects.c
++++ b/drivers/staging/speakup/kobjects.c
+@@ -830,7 +830,9 @@ static ssize_t message_show(struct kobject *kobj,
+ struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
+ unsigned long flags;
+
+- BUG_ON(!group);
++ if (WARN_ON(!group))
++ return -EINVAL;
++
+ spin_lock_irqsave(&speakup_info.spinlock, flags);
+ retval = message_show_helper(buf, group->start, group->end);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+@@ -842,7 +844,9 @@ static ssize_t message_store(struct kobject *kobj, struct kobj_attribute *attr,
+ {
+ struct msg_group_t *group = spk_find_msg_group(attr->attr.name);
+
+- BUG_ON(!group);
++ if (WARN_ON(!group))
++ return -EINVAL;
++
+ return message_store_helper(buf, count, group);
+ }
+
+diff --git a/drivers/staging/wlan-ng/prism2mgmt.c b/drivers/staging/wlan-ng/prism2mgmt.c
+index 013a6240f193..c1ad0aea23b9 100644
+--- a/drivers/staging/wlan-ng/prism2mgmt.c
++++ b/drivers/staging/wlan-ng/prism2mgmt.c
+@@ -169,7 +169,7 @@ int prism2mgmt_scan(wlandevice_t *wlandev, void *msgp)
+ hw->ident_sta_fw.variant) >
+ HFA384x_FIRMWARE_VERSION(1, 5, 0)) {
+ if (msg->scantype.data != P80211ENUM_scantype_active)
+- word = cpu_to_le16(msg->maxchanneltime.data);
++ word = msg->maxchanneltime.data;
+ else
+ word = 0;
+
+diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c
+index c68fe1222c16..5f3c4f45ab65 100644
+--- a/drivers/thunderbolt/nhi.c
++++ b/drivers/thunderbolt/nhi.c
+@@ -627,6 +627,7 @@ static const struct dev_pm_ops nhi_pm_ops = {
+ * we just disable hotplug, the
+ * pci-tunnels stay alive.
+ */
++ .thaw_noirq = nhi_resume_noirq,
+ .restore_noirq = nhi_resume_noirq,
+ };
+
+diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
+index 2ec337612a79..c41dfe40fd23 100644
+--- a/drivers/tty/n_gsm.c
++++ b/drivers/tty/n_gsm.c
+@@ -137,6 +137,9 @@ struct gsm_dlci {
+ struct mutex mutex;
+
+ /* Link layer */
++ int mode;
++#define DLCI_MODE_ABM 0 /* Normal Asynchronous Balanced Mode */
++#define DLCI_MODE_ADM 1 /* Asynchronous Disconnected Mode */
+ spinlock_t lock; /* Protects the internal state */
+ struct timer_list t1; /* Retransmit timer for SABM and UA */
+ int retries;
+@@ -1380,7 +1383,13 @@ retry:
+ ctrl->data = data;
+ ctrl->len = clen;
+ gsm->pending_cmd = ctrl;
+- gsm->cretries = gsm->n2;
++
++ /* If DLCI0 is in ADM mode skip retries, it won't respond */
++ if (gsm->dlci[0]->mode == DLCI_MODE_ADM)
++ gsm->cretries = 1;
++ else
++ gsm->cretries = gsm->n2;
++
+ mod_timer(&gsm->t2_timer, jiffies + gsm->t2 * HZ / 100);
+ gsm_control_transmit(gsm, ctrl);
+ spin_unlock_irqrestore(&gsm->control_lock, flags);
+@@ -1467,6 +1476,10 @@ static void gsm_dlci_open(struct gsm_dlci *dlci)
+ * in which case an opening port goes back to closed and a closing port
+ * is simply put into closed state (any further frames from the other
+ * end will get a DM response)
++ *
++ * Some control dlci can stay in ADM mode with other dlci working just
++ * fine. In that case we can just keep the control dlci open after the
++ * DLCI_OPENING retries time out.
+ */
+
+ static void gsm_dlci_t1(unsigned long data)
+@@ -1480,8 +1493,16 @@ static void gsm_dlci_t1(unsigned long data)
+ if (dlci->retries) {
+ gsm_command(dlci->gsm, dlci->addr, SABM|PF);
+ mod_timer(&dlci->t1, jiffies + gsm->t1 * HZ / 100);
+- } else
++ } else if (!dlci->addr && gsm->control == (DM | PF)) {
++ if (debug & 8)
++ pr_info("DLCI %d opening in ADM mode.\n",
++ dlci->addr);
++ dlci->mode = DLCI_MODE_ADM;
++ gsm_dlci_open(dlci);
++ } else {
+ gsm_dlci_close(dlci);
++ }
++
+ break;
+ case DLCI_CLOSING:
+ dlci->retries--;
+@@ -1499,8 +1520,8 @@ static void gsm_dlci_t1(unsigned long data)
+ * @dlci: DLCI to open
+ *
+ * Commence opening a DLCI from the Linux side. We issue SABM messages
+- * to the modem which should then reply with a UA, at which point we
+- * will move into open state. Opening is done asynchronously with retry
++ * to the modem which should then reply with a UA or ADM, at which point
++ * we will move into open state. Opening is done asynchronously with retry
+ * running off timers and the responses.
+ */
+
+@@ -2871,11 +2892,22 @@ static int gsmtty_modem_update(struct gsm_dlci *dlci, u8 brk)
+ static int gsm_carrier_raised(struct tty_port *port)
+ {
+ struct gsm_dlci *dlci = container_of(port, struct gsm_dlci, port);
++ struct gsm_mux *gsm = dlci->gsm;
++
+ /* Not yet open so no carrier info */
+ if (dlci->state != DLCI_OPEN)
+ return 0;
+ if (debug & 2)
+ return 1;
++
++ /*
++ * Basic mode with control channel in ADM mode may not respond
++ * to CMD_MSC at all and modem_rx is empty.
++ */
++ if (gsm->encoding == 0 && gsm->dlci[0]->mode == DLCI_MODE_ADM &&
++ !dlci->modem_rx)
++ return 1;
++
+ return dlci->modem_rx & TIOCM_CD;
+ }
+
+diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
+index 66e257b5a5b7..4693a1d0151f 100644
+--- a/drivers/tty/n_tty.c
++++ b/drivers/tty/n_tty.c
+@@ -2259,6 +2259,12 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
+ }
+ if (tty_hung_up_p(file))
+ break;
++ /*
++ * Abort readers for ttys which never actually
++ * get hung up. See __tty_hangup().
++ */
++ if (test_bit(TTY_HUPPING, &tty->flags))
++ break;
+ if (!timeout)
+ break;
+ if (file->f_flags & O_NONBLOCK) {
+diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
+index 531d76a276e4..89974a112cab 100644
+--- a/drivers/tty/serial/8250/8250_omap.c
++++ b/drivers/tty/serial/8250/8250_omap.c
+@@ -612,6 +612,10 @@ static int omap_8250_startup(struct uart_port *port)
+ up->lsr_saved_flags = 0;
+ up->msr_saved_flags = 0;
+
++ /* Disable DMA for console UART */
++ if (uart_console(port))
++ up->dma = NULL;
++
+ if (up->dma) {
+ ret = serial8250_request_dma(up);
+ if (ret) {
+diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
+index fcf803ffad19..cdd2f942317c 100644
+--- a/drivers/tty/serial/sccnxp.c
++++ b/drivers/tty/serial/sccnxp.c
+@@ -884,14 +884,19 @@ static int sccnxp_probe(struct platform_device *pdev)
+
+ clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(clk)) {
+- if (PTR_ERR(clk) == -EPROBE_DEFER) {
+- ret = -EPROBE_DEFER;
++ ret = PTR_ERR(clk);
++ if (ret == -EPROBE_DEFER)
+ goto err_out;
+- }
++ uartclk = 0;
++ } else {
++ clk_prepare_enable(clk);
++ uartclk = clk_get_rate(clk);
++ }
++
++ if (!uartclk) {
+ dev_notice(&pdev->dev, "Using default clock frequency\n");
+ uartclk = s->chip->freq_std;
+- } else
+- uartclk = clk_get_rate(clk);
++ }
+
+ /* Check input frequency */
+ if ((uartclk < s->chip->freq_min) || (uartclk > s->chip->freq_max)) {
+diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
+index be96970646a9..152cd369ce84 100644
+--- a/drivers/tty/tty_io.c
++++ b/drivers/tty/tty_io.c
+@@ -690,6 +690,14 @@ static void __tty_hangup(struct tty_struct *tty, int exit_session)
+ return;
+ }
+
++ /*
++ * Some console devices aren't actually hung up for technical and
++ * historical reasons, which can lead to indefinite interruptible
++ * sleep in n_tty_read(). The following explicitly tells
++ * n_tty_read() to abort readers.
++ */
++ set_bit(TTY_HUPPING, &tty->flags);
++
+ /* inuse_filps is protected by the single tty lock,
+ this really needs to change if we want to flush the
+ workqueue with the lock held */
+@@ -745,6 +753,7 @@ static void __tty_hangup(struct tty_struct *tty, int exit_session)
+ * can't yet guarantee all that.
+ */
+ set_bit(TTY_HUPPED, &tty->flags);
++ clear_bit(TTY_HUPPING, &tty->flags);
+ tty_unlock(tty);
+
+ if (f)
+@@ -3151,7 +3160,10 @@ struct tty_struct *alloc_tty_struct(struct tty_driver *driver, int idx)
+
+ kref_init(&tty->kref);
+ tty->magic = TTY_MAGIC;
+- tty_ldisc_init(tty);
++ if (tty_ldisc_init(tty)) {
++ kfree(tty);
++ return NULL;
++ }
+ tty->session = NULL;
+ tty->pgrp = NULL;
+ mutex_init(&tty->legacy_mutex);
+diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
+index 3737f55272d2..f4cfe7ca7d6d 100644
+--- a/drivers/tty/tty_ldisc.c
++++ b/drivers/tty/tty_ldisc.c
+@@ -171,12 +171,11 @@ static struct tty_ldisc *tty_ldisc_get(struct tty_struct *tty, int disc)
+ return ERR_CAST(ldops);
+ }
+
+- ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL);
+- if (ld == NULL) {
+- put_ldops(ldops);
+- return ERR_PTR(-ENOMEM);
+- }
+-
++ /*
++ * There is no way to handle allocation failure of only 16 bytes.
++ * Let's simplify error handling and save more memory.
++ */
++ ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL | __GFP_NOFAIL);
+ ld->ops = ldops;
+ ld->tty = tty;
+
+@@ -800,12 +799,13 @@ void tty_ldisc_release(struct tty_struct *tty)
+ * the tty structure is not completely set up when this call is made.
+ */
+
+-void tty_ldisc_init(struct tty_struct *tty)
++int tty_ldisc_init(struct tty_struct *tty)
+ {
+ struct tty_ldisc *ld = tty_ldisc_get(tty, N_TTY);
+ if (IS_ERR(ld))
+- panic("n_tty: init_tty");
++ return PTR_ERR(ld);
+ tty->ldisc = ld;
++ return 0;
+ }
+
+ /**
+diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
+index 50b67ff2b6ea..c989a6aa2561 100644
+--- a/drivers/tty/vt/vt.c
++++ b/drivers/tty/vt/vt.c
+@@ -1305,6 +1305,11 @@ static void csi_m(struct vc_data *vc)
+ case 3:
+ vc->vc_italic = 1;
+ break;
++ case 21:
++ /*
++ * No console drivers support double underline, so
++ * convert it to a single underline.
++ */
+ case 4:
+ vc->vc_underline = 1;
+ break;
+@@ -1341,7 +1346,6 @@ static void csi_m(struct vc_data *vc)
+ vc->vc_disp_ctrl = 1;
+ vc->vc_toggle_meta = 1;
+ break;
+- case 21:
+ case 22:
+ vc->vc_intensity = 1;
+ break;
+@@ -1711,7 +1715,7 @@ static void reset_terminal(struct vc_data *vc, int do_clear)
+ default_attr(vc);
+ update_attr(vc);
+
+- vc->vc_tab_stop[0] = 0x01010100;
++ vc->vc_tab_stop[0] =
+ vc->vc_tab_stop[1] =
+ vc->vc_tab_stop[2] =
+ vc->vc_tab_stop[3] =
+@@ -1754,7 +1758,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
+ vc->vc_pos -= (vc->vc_x << 1);
+ while (vc->vc_x < vc->vc_cols - 1) {
+ vc->vc_x++;
+- if (vc->vc_tab_stop[vc->vc_x >> 5] & (1 << (vc->vc_x & 31)))
++ if (vc->vc_tab_stop[7 & (vc->vc_x >> 5)] & (1 << (vc->vc_x & 31)))
+ break;
+ }
+ vc->vc_pos += (vc->vc_x << 1);
+@@ -1814,7 +1818,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
+ lf(vc);
+ return;
+ case 'H':
+- vc->vc_tab_stop[vc->vc_x >> 5] |= (1 << (vc->vc_x & 31));
++ vc->vc_tab_stop[7 & (vc->vc_x >> 5)] |= (1 << (vc->vc_x & 31));
+ return;
+ case 'Z':
+ respond_ID(tty);
+@@ -2007,7 +2011,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
+ return;
+ case 'g':
+ if (!vc->vc_par[0])
+- vc->vc_tab_stop[vc->vc_x >> 5] &= ~(1 << (vc->vc_x & 31));
++ vc->vc_tab_stop[7 & (vc->vc_x >> 5)] &= ~(1 << (vc->vc_x & 31));
+ else if (vc->vc_par[0] == 3) {
+ vc->vc_tab_stop[0] =
+ vc->vc_tab_stop[1] =
+diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
+index 3ad48e1c0c57..f37a908b2884 100644
+--- a/drivers/usb/chipidea/core.c
++++ b/drivers/usb/chipidea/core.c
+@@ -656,7 +656,7 @@ static inline void ci_role_destroy(struct ci_hdrc *ci)
+ {
+ ci_hdrc_gadget_destroy(ci);
+ ci_hdrc_host_destroy(ci);
+- if (ci->is_otg)
++ if (ci->is_otg && ci->roles[CI_ROLE_GADGET])
+ ci_hdrc_otg_destroy(ci);
+ }
+
+@@ -755,27 +755,35 @@ static int ci_hdrc_probe(struct platform_device *pdev)
+ /* initialize role(s) before the interrupt is requested */
+ if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_HOST) {
+ ret = ci_hdrc_host_init(ci);
+- if (ret)
+- dev_info(dev, "doesn't support host\n");
++ if (ret) {
++ if (ret == -ENXIO)
++ dev_info(dev, "doesn't support host\n");
++ else
++ goto deinit_phy;
++ }
+ }
+
+ if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) {
+ ret = ci_hdrc_gadget_init(ci);
+- if (ret)
+- dev_info(dev, "doesn't support gadget\n");
++ if (ret) {
++ if (ret == -ENXIO)
++ dev_info(dev, "doesn't support gadget\n");
++ else
++ goto deinit_host;
++ }
+ }
+
+ if (!ci->roles[CI_ROLE_HOST] && !ci->roles[CI_ROLE_GADGET]) {
+ dev_err(dev, "no supported roles\n");
+ ret = -ENODEV;
+- goto deinit_phy;
++ goto deinit_gadget;
+ }
+
+ if (ci->is_otg && ci->roles[CI_ROLE_GADGET]) {
+ ret = ci_hdrc_otg_init(ci);
+ if (ret) {
+ dev_err(dev, "init otg fails, ret = %d\n", ret);
+- goto stop;
++ goto deinit_gadget;
+ }
+ }
+
+@@ -835,7 +843,12 @@ static int ci_hdrc_probe(struct platform_device *pdev)
+ return 0;
+
+ stop:
+- ci_role_destroy(ci);
++ if (ci->is_otg && ci->roles[CI_ROLE_GADGET])
++ ci_hdrc_otg_destroy(ci);
++deinit_gadget:
++ ci_hdrc_gadget_destroy(ci);
++deinit_host:
++ ci_hdrc_host_destroy(ci);
+ deinit_phy:
+ ci_usb_phy_exit(ci);
+
+diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
+index 358ca8dd784f..a5240b4d7ab9 100644
+--- a/drivers/usb/core/generic.c
++++ b/drivers/usb/core/generic.c
+@@ -208,8 +208,13 @@ static int generic_suspend(struct usb_device *udev, pm_message_t msg)
+ if (!udev->parent)
+ rc = hcd_bus_suspend(udev, msg);
+
+- /* Non-root devices don't need to do anything for FREEZE or PRETHAW */
+- else if (msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW)
++ /*
++ * Non-root USB2 devices don't need to do anything for FREEZE
++ * or PRETHAW. USB3 devices don't support global suspend and
++ * needs to be selectively suspended.
++ */
++ else if ((msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW)
++ && (udev->speed < USB_SPEED_SUPER))
+ rc = 0;
+ else
+ rc = usb_port_suspend(udev, msg);
+diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
+index de0843cdeb9f..2a06bd656963 100644
+--- a/drivers/usb/core/hcd.c
++++ b/drivers/usb/core/hcd.c
+@@ -2288,6 +2288,7 @@ void usb_hcd_resume_root_hub (struct usb_hcd *hcd)
+
+ spin_lock_irqsave (&hcd_root_hub_lock, flags);
+ if (hcd->rh_registered) {
++ pm_wakeup_event(&hcd->self.root_hub->dev, 0);
+ set_bit(HCD_FLAG_WAKEUP_PENDING, &hcd->flags);
+ queue_work(pm_wq, &hcd->wakeup_work);
+ }
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index 1ba74441d7bf..a2686b95c3dd 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -633,12 +633,17 @@ void usb_wakeup_notification(struct usb_device *hdev,
+ unsigned int portnum)
+ {
+ struct usb_hub *hub;
++ struct usb_port *port_dev;
+
+ if (!hdev)
+ return;
+
+ hub = usb_hub_to_struct_hub(hdev);
+ if (hub) {
++ port_dev = hub->ports[portnum - 1];
++ if (port_dev && port_dev->child)
++ pm_wakeup_event(&port_dev->child->dev, 0);
++
+ set_bit(portnum, hub->wakeup_bits);
+ kick_hub_wq(hub);
+ }
+@@ -3375,8 +3380,11 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg)
+
+ /* Skip the initial Clear-Suspend step for a remote wakeup */
+ status = hub_port_status(hub, port1, &portstatus, &portchange);
+- if (status == 0 && !port_is_suspended(hub, portstatus))
++ if (status == 0 && !port_is_suspended(hub, portstatus)) {
++ if (portchange & USB_PORT_STAT_C_SUSPEND)
++ pm_wakeup_event(&udev->dev, 0);
+ goto SuspendCleared;
++ }
+
+ /* see 7.1.7.7; affects power usage, but not budgeting */
+ if (hub_is_superspeed(hub->hdev))
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 4f1c6f8d4352..40ce175655e6 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -45,6 +45,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ { USB_DEVICE(0x03f0, 0x0701), .driver_info =
+ USB_QUIRK_STRING_FETCH_255 },
+
++ /* HP v222w 16GB Mini USB Drive */
++ { USB_DEVICE(0x03f0, 0x3f40), .driver_info = USB_QUIRK_DELAY_INIT },
++
+ /* Creative SB Audigy 2 NX */
+ { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
+
+diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c
+index fe3b9335a74e..88a5b798b1ea 100644
+--- a/drivers/usb/dwc3/dwc3-keystone.c
++++ b/drivers/usb/dwc3/dwc3-keystone.c
+@@ -112,6 +112,10 @@ static int kdwc3_probe(struct platform_device *pdev)
+ dev->dma_mask = &kdwc3_dma_mask;
+
+ kdwc->clk = devm_clk_get(kdwc->dev, "usb");
++ if (IS_ERR(kdwc->clk)) {
++ dev_err(kdwc->dev, "unable to get usb clock\n");
++ return PTR_ERR(kdwc->clk);
++ }
+
+ error = clk_prepare_enable(kdwc->clk);
+ if (error < 0) {
+diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
+index c702f5d941d9..01816e8411fc 100644
+--- a/drivers/usb/dwc3/dwc3-pci.c
++++ b/drivers/usb/dwc3/dwc3-pci.c
+@@ -124,7 +124,7 @@ static int dwc3_pci_probe(struct pci_dev *pci,
+ ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
+ if (ret) {
+ dev_err(dev, "couldn't add resources to dwc3 device\n");
+- return ret;
++ goto err;
+ }
+
+ pci_set_drvdata(pci, dwc3);
+diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
+index 466640afa7be..4a7861022d20 100644
+--- a/drivers/usb/gadget/function/f_hid.c
++++ b/drivers/usb/gadget/function/f_hid.c
+@@ -223,6 +223,13 @@ static ssize_t f_hidg_read(struct file *file, char __user *buffer,
+ /* pick the first one */
+ list = list_first_entry(&hidg->completed_out_req,
+ struct f_hidg_req_list, list);
++
++ /*
++ * Remove this from list to protect it from beign free()
++ * while host disables our function
++ */
++ list_del(&list->list);
++
+ req = list->req;
+ count = min_t(unsigned int, count, req->actual - list->pos);
+ spin_unlock_irqrestore(&hidg->spinlock, flags);
+@@ -238,15 +245,20 @@ static ssize_t f_hidg_read(struct file *file, char __user *buffer,
+ * call, taking into account its current read position.
+ */
+ if (list->pos == req->actual) {
+- spin_lock_irqsave(&hidg->spinlock, flags);
+- list_del(&list->list);
+ kfree(list);
+- spin_unlock_irqrestore(&hidg->spinlock, flags);
+
+ req->length = hidg->report_length;
+ ret = usb_ep_queue(hidg->out_ep, req, GFP_KERNEL);
+- if (ret < 0)
++ if (ret < 0) {
++ free_ep_req(hidg->out_ep, req);
+ return ret;
++ }
++ } else {
++ spin_lock_irqsave(&hidg->spinlock, flags);
++ list_add(&list->list, &hidg->completed_out_req);
++ spin_unlock_irqrestore(&hidg->spinlock, flags);
++
++ wake_up(&hidg->read_queue);
+ }
+
+ return count;
+@@ -490,6 +502,7 @@ static void hidg_disable(struct usb_function *f)
+ {
+ struct f_hidg *hidg = func_to_hidg(f);
+ struct f_hidg_req_list *list, *next;
++ unsigned long flags;
+
+ usb_ep_disable(hidg->in_ep);
+ hidg->in_ep->driver_data = NULL;
+@@ -497,10 +510,13 @@ static void hidg_disable(struct usb_function *f)
+ usb_ep_disable(hidg->out_ep);
+ hidg->out_ep->driver_data = NULL;
+
++ spin_lock_irqsave(&hidg->spinlock, flags);
+ list_for_each_entry_safe(list, next, &hidg->completed_out_req, list) {
++ free_ep_req(hidg->out_ep, list->req);
+ list_del(&list->list);
+ kfree(list);
+ }
++ spin_unlock_irqrestore(&hidg->spinlock, flags);
+ }
+
+ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
+diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
+index d97f362b3604..a32ed6359b03 100644
+--- a/drivers/usb/gadget/function/f_midi.c
++++ b/drivers/usb/gadget/function/f_midi.c
+@@ -201,12 +201,6 @@ static inline struct usb_request *midi_alloc_ep_req(struct usb_ep *ep,
+ return alloc_ep_req(ep, length, length);
+ }
+
+-static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
+-{
+- kfree(req->buf);
+- usb_ep_free_request(ep, req);
+-}
+-
+ static const uint8_t f_midi_cin_length[] = {
+ 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
+ };
+diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c
+index 3a5ae9900b1e..eedea7f093d1 100644
+--- a/drivers/usb/gadget/function/f_sourcesink.c
++++ b/drivers/usb/gadget/function/f_sourcesink.c
+@@ -307,12 +307,6 @@ static inline struct usb_request *ss_alloc_ep_req(struct usb_ep *ep, int len)
+ return alloc_ep_req(ep, len, buflen);
+ }
+
+-void free_ep_req(struct usb_ep *ep, struct usb_request *req)
+-{
+- kfree(req->buf);
+- usb_ep_free_request(ep, req);
+-}
+-
+ static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep)
+ {
+ int value;
+diff --git a/drivers/usb/gadget/function/g_zero.h b/drivers/usb/gadget/function/g_zero.h
+index 15f180904f8a..5ed90b437f18 100644
+--- a/drivers/usb/gadget/function/g_zero.h
++++ b/drivers/usb/gadget/function/g_zero.h
+@@ -59,7 +59,6 @@ void lb_modexit(void);
+ int lb_modinit(void);
+
+ /* common utilities */
+-void free_ep_req(struct usb_ep *ep, struct usb_request *req);
+ void disable_endpoints(struct usb_composite_dev *cdev,
+ struct usb_ep *in, struct usb_ep *out,
+ struct usb_ep *iso_in, struct usb_ep *iso_out);
+diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c
+index c6276f0268ae..907f8144813c 100644
+--- a/drivers/usb/gadget/u_f.c
++++ b/drivers/usb/gadget/u_f.c
+@@ -11,16 +11,18 @@
+ * published by the Free Software Foundation.
+ */
+
+-#include <linux/usb/gadget.h>
+ #include "u_f.h"
++#include <linux/usb/ch9.h>
+
+-struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len)
++struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len, int default_len)
+ {
+ struct usb_request *req;
+
+ req = usb_ep_alloc_request(ep, GFP_ATOMIC);
+ if (req) {
+ req->length = len ?: default_len;
++ if (usb_endpoint_dir_out(ep->desc))
++ req->length = usb_ep_align(ep, req->length);
+ req->buf = kmalloc(req->length, GFP_ATOMIC);
+ if (!req->buf) {
+ usb_ep_free_request(ep, req);
+diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h
+index 1d5f0eb68552..69a1d10df04f 100644
+--- a/drivers/usb/gadget/u_f.h
++++ b/drivers/usb/gadget/u_f.h
+@@ -16,6 +16,8 @@
+ #ifndef __U_F_H__
+ #define __U_F_H__
+
++#include <linux/usb/gadget.h>
++
+ /* Variable Length Array Macros **********************************************/
+ #define vla_group(groupname) size_t groupname##__next = 0
+ #define vla_group_size(groupname) groupname##__next
+@@ -45,8 +47,26 @@
+ struct usb_ep;
+ struct usb_request;
+
+-struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len);
+-
+-#endif /* __U_F_H__ */
++/**
++ * alloc_ep_req - returns a usb_request allocated by the gadget driver and
++ * allocates the request's buffer.
++ *
++ * @ep: the endpoint to allocate a usb_request
++ * @len: usb_requests's buffer suggested size
++ * @default_len: used if @len is not provided, ie, is 0
++ *
++ * In case @ep direction is OUT, the @len will be aligned to ep's
++ * wMaxPacketSize. In order to avoid memory leaks or drops, *always* use
++ * usb_requests's length (req->length) to refer to the allocated buffer size.
++ * Requests allocated via alloc_ep_req() *must* be freed by free_ep_req().
++ */
++struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len, int default_len);
+
++/* Frees a usb_request previously allocated by alloc_ep_req() */
++static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req)
++{
++ kfree(req->buf);
++ usb_ep_free_request(ep, req);
++}
+
++#endif /* __U_F_H__ */
+diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c
+index 5c8f4effb62a..caec234822c6 100644
+--- a/drivers/usb/gadget/udc/bdc/bdc_core.c
++++ b/drivers/usb/gadget/udc/bdc/bdc_core.c
+@@ -476,7 +476,7 @@ static int bdc_probe(struct platform_device *pdev)
+ bdc->dev = dev;
+ dev_dbg(bdc->dev, "bdc->regs: %p irq=%d\n", bdc->regs, bdc->irq);
+
+- temp = bdc_readl(bdc->regs, BDC_BDCSC);
++ temp = bdc_readl(bdc->regs, BDC_BDCCAP1);
+ if ((temp & BDC_P64) &&
+ !dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) {
+ dev_dbg(bdc->dev, "Using 64-bit address\n");
+diff --git a/drivers/usb/gadget/udc/bdc/bdc_pci.c b/drivers/usb/gadget/udc/bdc/bdc_pci.c
+index 02968842b359..708e36f530d8 100644
+--- a/drivers/usb/gadget/udc/bdc/bdc_pci.c
++++ b/drivers/usb/gadget/udc/bdc/bdc_pci.c
+@@ -82,6 +82,7 @@ static int bdc_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
+ if (ret) {
+ dev_err(&pci->dev,
+ "couldn't add resources to bdc device\n");
++ platform_device_put(bdc);
+ return ret;
+ }
+
+diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
+index 35f730324b63..a5a260b7ff25 100644
+--- a/drivers/usb/gadget/udc/dummy_hcd.c
++++ b/drivers/usb/gadget/udc/dummy_hcd.c
+@@ -2026,16 +2026,13 @@ static int dummy_hub_control(
+ }
+ break;
+ case USB_PORT_FEAT_POWER:
+- if (hcd->speed == HCD_USB3) {
+- if (dum_hcd->port_status & USB_PORT_STAT_POWER)
+- dev_dbg(dummy_dev(dum_hcd),
+- "power-off\n");
+- } else
+- if (dum_hcd->port_status &
+- USB_SS_PORT_STAT_POWER)
+- dev_dbg(dummy_dev(dum_hcd),
+- "power-off\n");
+- /* FALLS THROUGH */
++ dev_dbg(dummy_dev(dum_hcd), "power-off\n");
++ if (hcd->speed == HCD_USB3)
++ dum_hcd->port_status &= ~USB_SS_PORT_STAT_POWER;
++ else
++ dum_hcd->port_status &= ~USB_PORT_STAT_POWER;
++ set_link_state(dum_hcd);
++ break;
+ default:
+ dum_hcd->port_status &= ~(1 << wValue);
+ set_link_state(dum_hcd);
+@@ -2206,14 +2203,13 @@ static int dummy_hub_control(
+ if ((dum_hcd->port_status &
+ USB_SS_PORT_STAT_POWER) != 0) {
+ dum_hcd->port_status |= (1 << wValue);
+- set_link_state(dum_hcd);
+ }
+ } else
+ if ((dum_hcd->port_status &
+ USB_PORT_STAT_POWER) != 0) {
+ dum_hcd->port_status |= (1 << wValue);
+- set_link_state(dum_hcd);
+ }
++ set_link_state(dum_hcd);
+ }
+ break;
+ case GetPortErrorCount:
+diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
+index e92b9903faa4..23c5bdab988d 100644
+--- a/drivers/usb/host/xhci-plat.c
++++ b/drivers/usb/host/xhci-plat.c
+@@ -266,7 +266,6 @@ MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
+ static struct platform_driver usb_xhci_driver = {
+ .probe = xhci_plat_probe,
+ .remove = xhci_plat_remove,
+- .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "xhci-hcd",
+ .pm = DEV_PM_OPS,
+diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
+index 10d30afe4a3c..a0d1417362cd 100644
+--- a/drivers/usb/musb/musb_gadget_ep0.c
++++ b/drivers/usb/musb/musb_gadget_ep0.c
+@@ -114,15 +114,19 @@ static int service_tx_status_request(
+ }
+
+ is_in = epnum & USB_DIR_IN;
+- if (is_in) {
+- epnum &= 0x0f;
++ epnum &= 0x0f;
++ if (epnum >= MUSB_C_NUM_EPS) {
++ handled = -EINVAL;
++ break;
++ }
++
++ if (is_in)
+ ep = &musb->endpoints[epnum].ep_in;
+- } else {
++ else
+ ep = &musb->endpoints[epnum].ep_out;
+- }
+ regs = musb->endpoints[epnum].regs;
+
+- if (epnum >= MUSB_C_NUM_EPS || !ep->desc) {
++ if (!ep->desc) {
+ handled = -EINVAL;
+ break;
+ }
+diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
+index 1d0c096c1b84..4b707d527855 100644
+--- a/drivers/usb/musb/musb_host.c
++++ b/drivers/usb/musb/musb_host.c
+@@ -1002,7 +1002,9 @@ static void musb_bulk_nak_timeout(struct musb *musb, struct musb_hw_ep *ep,
+ /* set tx_reinit and schedule the next qh */
+ ep->tx_reinit = 1;
+ }
+- musb_start_urb(musb, is_in, next_qh);
++
++ if (next_qh)
++ musb_start_urb(musb, is_in, next_qh);
+ }
+ }
+
+diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
+index 941716c1177e..3d09c1037e36 100644
+--- a/drivers/usb/serial/Kconfig
++++ b/drivers/usb/serial/Kconfig
+@@ -62,6 +62,7 @@ config USB_SERIAL_SIMPLE
+ - Fundamental Software dongle.
+ - Google USB serial devices
+ - HP4x calculators
++ - Libtransistor USB console
+ - a number of Motorola phones
+ - Motorola Tetra devices
+ - Novatel Wireless GPS receivers
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index 142c876e7b19..1011fc41deb7 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -149,6 +149,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x12B8, 0xEC62) }, /* Link G4+ ECU */
+ { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */
+ { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */
++ { USB_DEVICE(0x155A, 0x1006) }, /* ELDAT Easywave RX09 */
+ { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */
+ { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */
+ { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */
+@@ -207,6 +208,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */
+ { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */
+ { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */
++ { USB_DEVICE(0x3923, 0x7A0B) }, /* National Instruments USB Serial Console */
+ { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */
+ { } /* Terminating Entry */
+ };
+diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
+index 252f580cf3e7..00b5cc4c9f38 100644
+--- a/drivers/usb/serial/ftdi_sio.c
++++ b/drivers/usb/serial/ftdi_sio.c
+@@ -773,6 +773,7 @@ static const struct usb_device_id id_table_combined[] = {
+ .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
+ { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
+ { USB_DEVICE(NOVITUS_VID, NOVITUS_BONO_E_PID) },
++ { USB_DEVICE(FTDI_VID, RTSYSTEMS_USB_VX8_PID) },
+ { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S03_PID) },
+ { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_59_PID) },
+ { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_57A_PID) },
+@@ -935,6 +936,7 @@ static const struct usb_device_id id_table_combined[] = {
+ { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_LS_LOGBOOK_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_HS_LOGBOOK_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_CINTERION_MC55I_PID) },
++ { USB_DEVICE(FTDI_VID, FTDI_FHE_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_DOTEC_PID) },
+ { USB_DEVICE(QIHARDWARE_VID, MILKYMISTONE_JTAGSERIAL_PID),
+ .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+@@ -1904,7 +1906,8 @@ static int ftdi_8u2232c_probe(struct usb_serial *serial)
+ return ftdi_jtag_probe(serial);
+
+ if (udev->product &&
+- (!strcmp(udev->product, "BeagleBone/XDS100V2") ||
++ (!strcmp(udev->product, "Arrow USB Blaster") ||
++ !strcmp(udev->product, "BeagleBone/XDS100V2") ||
+ !strcmp(udev->product, "SNAP Connect E10")))
+ return ftdi_jtag_probe(serial);
+
+diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
+index 6d847ecb423f..eaaada41359e 100644
+--- a/drivers/usb/serial/ftdi_sio_ids.h
++++ b/drivers/usb/serial/ftdi_sio_ids.h
+@@ -903,6 +903,9 @@
+ /*
+ * RT Systems programming cables for various ham radios
+ */
++/* This device uses the VID of FTDI */
++#define RTSYSTEMS_USB_VX8_PID 0x9e50 /* USB-VX8 USB to 7 pin modular plug for Yaesu VX-8 radio */
++
+ #define RTSYSTEMS_VID 0x2100 /* Vendor ID */
+ #define RTSYSTEMS_USB_S03_PID 0x9001 /* RTS-03 USB to Serial Adapter */
+ #define RTSYSTEMS_USB_59_PID 0x9e50 /* USB-59 USB to 8 pin plug */
+@@ -1421,6 +1424,12 @@
+ */
+ #define FTDI_CINTERION_MC55I_PID 0xA951
+
++/*
++ * Product: FirmwareHubEmulator
++ * Manufacturer: Harman Becker Automotive Systems
++ */
++#define FTDI_FHE_PID 0xA9A0
++
+ /*
+ * Product: Comet Caller ID decoder
+ * Manufacturer: Crucible Technologies
+diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
+index 6aa7ff2c1cf7..2674da40d9cd 100644
+--- a/drivers/usb/serial/usb-serial-simple.c
++++ b/drivers/usb/serial/usb-serial-simple.c
+@@ -66,6 +66,11 @@ DEVICE(flashloader, FLASHLOADER_IDS);
+ 0x01) }
+ DEVICE(google, GOOGLE_IDS);
+
++/* Libtransistor USB console */
++#define LIBTRANSISTOR_IDS() \
++ { USB_DEVICE(0x1209, 0x8b00) }
++DEVICE(libtransistor, LIBTRANSISTOR_IDS);
++
+ /* ViVOpay USB Serial Driver */
+ #define VIVOPAY_IDS() \
+ { USB_DEVICE(0x1d5f, 0x1004) } /* ViVOpay 8800 */
+@@ -113,6 +118,7 @@ static struct usb_serial_driver * const serial_drivers[] = {
+ &funsoft_device,
+ &flashloader_device,
+ &google_device,
++ &libtransistor_device,
+ &vivopay_device,
+ &moto_modem_device,
+ &motorola_tetra_device,
+@@ -129,6 +135,7 @@ static const struct usb_device_id id_table[] = {
+ FUNSOFT_IDS(),
+ FLASHLOADER_IDS(),
+ GOOGLE_IDS(),
++ LIBTRANSISTOR_IDS(),
+ VIVOPAY_IDS(),
+ MOTO_IDS(),
+ MOTOROLA_TETRA_IDS(),
+diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
+index 337a0be89fcf..dbc3801b43eb 100644
+--- a/drivers/usb/serial/visor.c
++++ b/drivers/usb/serial/visor.c
+@@ -338,47 +338,48 @@ static int palm_os_3_probe(struct usb_serial *serial,
+ goto exit;
+ }
+
+- if (retval == sizeof(*connection_info)) {
+- connection_info = (struct visor_connection_info *)
+- transfer_buffer;
+-
+- num_ports = le16_to_cpu(connection_info->num_ports);
+- for (i = 0; i < num_ports; ++i) {
+- switch (
+- connection_info->connections[i].port_function_id) {
+- case VISOR_FUNCTION_GENERIC:
+- string = "Generic";
+- break;
+- case VISOR_FUNCTION_DEBUGGER:
+- string = "Debugger";
+- break;
+- case VISOR_FUNCTION_HOTSYNC:
+- string = "HotSync";
+- break;
+- case VISOR_FUNCTION_CONSOLE:
+- string = "Console";
+- break;
+- case VISOR_FUNCTION_REMOTE_FILE_SYS:
+- string = "Remote File System";
+- break;
+- default:
+- string = "unknown";
+- break;
+- }
+- dev_info(dev, "%s: port %d, is for %s use\n",
+- serial->type->description,
+- connection_info->connections[i].port, string);
+- }
++ if (retval != sizeof(*connection_info)) {
++ dev_err(dev, "Invalid connection information received from device\n");
++ retval = -ENODEV;
++ goto exit;
+ }
+- /*
+- * Handle devices that report invalid stuff here.
+- */
++
++ connection_info = (struct visor_connection_info *)transfer_buffer;
++
++ num_ports = le16_to_cpu(connection_info->num_ports);
++
++ /* Handle devices that report invalid stuff here. */
+ if (num_ports == 0 || num_ports > 2) {
+ dev_warn(dev, "%s: No valid connect info available\n",
+ serial->type->description);
+ num_ports = 2;
+ }
+
++ for (i = 0; i < num_ports; ++i) {
++ switch (connection_info->connections[i].port_function_id) {
++ case VISOR_FUNCTION_GENERIC:
++ string = "Generic";
++ break;
++ case VISOR_FUNCTION_DEBUGGER:
++ string = "Debugger";
++ break;
++ case VISOR_FUNCTION_HOTSYNC:
++ string = "HotSync";
++ break;
++ case VISOR_FUNCTION_CONSOLE:
++ string = "Console";
++ break;
++ case VISOR_FUNCTION_REMOTE_FILE_SYS:
++ string = "Remote File System";
++ break;
++ default:
++ string = "unknown";
++ break;
++ }
++ dev_info(dev, "%s: port %d, is for %s use\n",
++ serial->type->description,
++ connection_info->connections[i].port, string);
++ }
+ dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
+ num_ports);
+
+diff --git a/drivers/usb/storage/ene_ub6250.c b/drivers/usb/storage/ene_ub6250.c
+index 26c26e3e21d3..e82e179f3558 100644
+--- a/drivers/usb/storage/ene_ub6250.c
++++ b/drivers/usb/storage/ene_ub6250.c
+@@ -1950,6 +1950,8 @@ static int ene_load_bincode(struct us_data *us, unsigned char flag)
+ bcb->CDB[0] = 0xEF;
+
+ result = ene_send_scsi_cmd(us, FDIR_WRITE, buf, 0);
++ if (us->srb != NULL)
++ scsi_set_resid(us->srb, 0);
+ info->BIN_FLAG = flag;
+ kfree(buf);
+
+@@ -2303,21 +2305,22 @@ static int ms_scsi_irp(struct us_data *us, struct scsi_cmnd *srb)
+
+ static int ene_transport(struct scsi_cmnd *srb, struct us_data *us)
+ {
+- int result = 0;
++ int result = USB_STOR_XFER_GOOD;
+ struct ene_ub6250_info *info = (struct ene_ub6250_info *)(us->extra);
+
+ /*US_DEBUG(usb_stor_show_command(us, srb)); */
+ scsi_set_resid(srb, 0);
+- if (unlikely(!(info->SD_Status.Ready || info->MS_Status.Ready))) {
++ if (unlikely(!(info->SD_Status.Ready || info->MS_Status.Ready)))
+ result = ene_init(us);
+- } else {
++ if (result == USB_STOR_XFER_GOOD) {
++ result = USB_STOR_TRANSPORT_ERROR;
+ if (info->SD_Status.Ready)
+ result = sd_scsi_irp(us, srb);
+
+ if (info->MS_Status.Ready)
+ result = ms_scsi_irp(us, srb);
+ }
+- return 0;
++ return result;
+ }
+
+
+diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c
+index 325b4c05acdd..f761e02e75c9 100644
+--- a/drivers/usb/usbip/stub_main.c
++++ b/drivers/usb/usbip/stub_main.c
+@@ -201,7 +201,12 @@ static ssize_t rebind_store(struct device_driver *dev, const char *buf,
+ if (!bid)
+ return -ENODEV;
+
++ /* device_attach() callers should hold parent lock for USB */
++ if (bid->udev->dev.parent)
++ device_lock(bid->udev->dev.parent);
+ ret = device_attach(&bid->udev->dev);
++ if (bid->udev->dev.parent)
++ device_unlock(bid->udev->dev.parent);
+ if (ret < 0) {
+ dev_err(&bid->udev->dev, "rebind failed\n");
+ return ret;
+diff --git a/drivers/usb/usbip/usbip_common.h b/drivers/usb/usbip/usbip_common.h
+index f875ccaa55f9..0fc5ace57c0e 100644
+--- a/drivers/usb/usbip/usbip_common.h
++++ b/drivers/usb/usbip/usbip_common.h
+@@ -248,7 +248,7 @@ enum usbip_side {
+ #define SDEV_EVENT_ERROR_SUBMIT (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
+ #define SDEV_EVENT_ERROR_MALLOC (USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
+
+-#define VDEV_EVENT_REMOVED (USBIP_EH_SHUTDOWN | USBIP_EH_BYE)
++#define VDEV_EVENT_REMOVED (USBIP_EH_SHUTDOWN | USBIP_EH_RESET | USBIP_EH_BYE)
+ #define VDEV_EVENT_DOWN (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
+ #define VDEV_EVENT_ERROR_TCP (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
+ #define VDEV_EVENT_ERROR_MALLOC (USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
+diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
+index ff75ca31a199..a9fc4a6d010a 100644
+--- a/drivers/vfio/pci/vfio_pci_config.c
++++ b/drivers/vfio/pci/vfio_pci_config.c
+@@ -685,6 +685,62 @@ static int __init init_pci_cap_pcix_perm(struct perm_bits *perm)
+ return 0;
+ }
+
++static int vfio_exp_config_write(struct vfio_pci_device *vdev, int pos,
++ int count, struct perm_bits *perm,
++ int offset, __le32 val)
++{
++ __le16 *ctrl = (__le16 *)(vdev->vconfig + pos -
++ offset + PCI_EXP_DEVCTL);
++ int readrq = le16_to_cpu(*ctrl) & PCI_EXP_DEVCTL_READRQ;
++
++ count = vfio_default_config_write(vdev, pos, count, perm, offset, val);
++ if (count < 0)
++ return count;
++
++ /*
++ * The FLR bit is virtualized, if set and the device supports PCIe
++ * FLR, issue a reset_function. Regardless, clear the bit, the spec
++ * requires it to be always read as zero. NB, reset_function might
++ * not use a PCIe FLR, we don't have that level of granularity.
++ */
++ if (*ctrl & cpu_to_le16(PCI_EXP_DEVCTL_BCR_FLR)) {
++ u32 cap;
++ int ret;
++
++ *ctrl &= ~cpu_to_le16(PCI_EXP_DEVCTL_BCR_FLR);
++
++ ret = pci_user_read_config_dword(vdev->pdev,
++ pos - offset + PCI_EXP_DEVCAP,
++ &cap);
++
++ if (!ret && (cap & PCI_EXP_DEVCAP_FLR))
++ pci_try_reset_function(vdev->pdev);
++ }
++
++ /*
++ * MPS is virtualized to the user, writes do not change the physical
++ * register since determining a proper MPS value requires a system wide
++ * device view. The MRRS is largely independent of MPS, but since the
++ * user does not have that system-wide view, they might set a safe, but
++ * inefficiently low value. Here we allow writes through to hardware,
++ * but we set the floor to the physical device MPS setting, so that
++ * we can at least use full TLPs, as defined by the MPS value.
++ *
++ * NB, if any devices actually depend on an artificially low MRRS
++ * setting, this will need to be revisited, perhaps with a quirk
++ * though pcie_set_readrq().
++ */
++ if (readrq != (le16_to_cpu(*ctrl) & PCI_EXP_DEVCTL_READRQ)) {
++ readrq = 128 <<
++ ((le16_to_cpu(*ctrl) & PCI_EXP_DEVCTL_READRQ) >> 12);
++ readrq = max(readrq, pcie_get_mps(vdev->pdev));
++
++ pcie_set_readrq(vdev->pdev, readrq);
++ }
++
++ return count;
++}
++
+ /* Permissions for PCI Express capability */
+ static int __init init_pci_cap_exp_perm(struct perm_bits *perm)
+ {
+@@ -692,26 +748,67 @@ static int __init init_pci_cap_exp_perm(struct perm_bits *perm)
+ if (alloc_perm_bits(perm, PCI_CAP_EXP_ENDPOINT_SIZEOF_V2))
+ return -ENOMEM;
+
++ perm->writefn = vfio_exp_config_write;
++
+ p_setb(perm, PCI_CAP_LIST_NEXT, (u8)ALL_VIRT, NO_WRITE);
+
+ /*
+- * Allow writes to device control fields (includes FLR!)
+- * but not to devctl_phantom which could confuse IOMMU
+- * or to the ARI bit in devctl2 which is set at probe time
++ * Allow writes to device control fields, except devctl_phantom,
++ * which could confuse IOMMU, MPS, which can break communication
++ * with other physical devices, and the ARI bit in devctl2, which
++ * is set at probe time. FLR and MRRS get virtualized via our
++ * writefn.
+ */
+- p_setw(perm, PCI_EXP_DEVCTL, NO_VIRT, ~PCI_EXP_DEVCTL_PHANTOM);
++ p_setw(perm, PCI_EXP_DEVCTL,
++ PCI_EXP_DEVCTL_BCR_FLR | PCI_EXP_DEVCTL_PAYLOAD |
++ PCI_EXP_DEVCTL_READRQ, ~PCI_EXP_DEVCTL_PHANTOM);
+ p_setw(perm, PCI_EXP_DEVCTL2, NO_VIRT, ~PCI_EXP_DEVCTL2_ARI);
+ return 0;
+ }
+
++static int vfio_af_config_write(struct vfio_pci_device *vdev, int pos,
++ int count, struct perm_bits *perm,
++ int offset, __le32 val)
++{
++ u8 *ctrl = vdev->vconfig + pos - offset + PCI_AF_CTRL;
++
++ count = vfio_default_config_write(vdev, pos, count, perm, offset, val);
++ if (count < 0)
++ return count;
++
++ /*
++ * The FLR bit is virtualized, if set and the device supports AF
++ * FLR, issue a reset_function. Regardless, clear the bit, the spec
++ * requires it to be always read as zero. NB, reset_function might
++ * not use an AF FLR, we don't have that level of granularity.
++ */
++ if (*ctrl & PCI_AF_CTRL_FLR) {
++ u8 cap;
++ int ret;
++
++ *ctrl &= ~PCI_AF_CTRL_FLR;
++
++ ret = pci_user_read_config_byte(vdev->pdev,
++ pos - offset + PCI_AF_CAP,
++ &cap);
++
++ if (!ret && (cap & PCI_AF_CAP_FLR) && (cap & PCI_AF_CAP_TP))
++ pci_try_reset_function(vdev->pdev);
++ }
++
++ return count;
++}
++
+ /* Permissions for Advanced Function capability */
+ static int __init init_pci_cap_af_perm(struct perm_bits *perm)
+ {
+ if (alloc_perm_bits(perm, pci_cap_length[PCI_CAP_ID_AF]))
+ return -ENOMEM;
+
++ perm->writefn = vfio_af_config_write;
++
+ p_setb(perm, PCI_CAP_LIST_NEXT, (u8)ALL_VIRT, NO_WRITE);
+- p_setb(perm, PCI_AF_CTRL, NO_VIRT, PCI_AF_CTRL_FLR);
++ p_setb(perm, PCI_AF_CTRL, PCI_AF_CTRL_FLR, PCI_AF_CTRL_FLR);
+ return 0;
+ }
+
+diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
+index fa49d3294cd5..1fd31650e01c 100644
+--- a/drivers/vhost/vhost.c
++++ b/drivers/vhost/vhost.c
+@@ -96,8 +96,7 @@ int vhost_poll_start(struct vhost_poll *poll, struct file *file)
+ if (mask)
+ vhost_poll_wakeup(&poll->wait, 0, 0, (void *)mask);
+ if (mask & POLLERR) {
+- if (poll->wqh)
+- remove_wait_queue(poll->wqh, &poll->wait);
++ vhost_poll_stop(poll);
+ ret = -EINVAL;
+ }
+
+diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
+index 517f565b65d7..598ec7545e84 100644
+--- a/drivers/video/console/vgacon.c
++++ b/drivers/video/console/vgacon.c
+@@ -409,7 +409,10 @@ static const char *vgacon_startup(void)
+ vga_video_port_val = VGA_CRT_DM;
+ if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) {
+ static struct resource ega_console_resource =
+- { .name = "ega", .start = 0x3B0, .end = 0x3BF };
++ { .name = "ega",
++ .flags = IORESOURCE_IO,
++ .start = 0x3B0,
++ .end = 0x3BF };
+ vga_video_type = VIDEO_TYPE_EGAM;
+ vga_vram_size = 0x8000;
+ display_desc = "EGA+";
+@@ -417,9 +420,15 @@ static const char *vgacon_startup(void)
+ &ega_console_resource);
+ } else {
+ static struct resource mda1_console_resource =
+- { .name = "mda", .start = 0x3B0, .end = 0x3BB };
++ { .name = "mda",
++ .flags = IORESOURCE_IO,
++ .start = 0x3B0,
++ .end = 0x3BB };
+ static struct resource mda2_console_resource =
+- { .name = "mda", .start = 0x3BF, .end = 0x3BF };
++ { .name = "mda",
++ .flags = IORESOURCE_IO,
++ .start = 0x3BF,
++ .end = 0x3BF };
+ vga_video_type = VIDEO_TYPE_MDA;
+ vga_vram_size = 0x2000;
+ display_desc = "*MDA";
+@@ -441,15 +450,21 @@ static const char *vgacon_startup(void)
+ vga_vram_size = 0x8000;
+
+ if (!screen_info.orig_video_isVGA) {
+- static struct resource ega_console_resource
+- = { .name = "ega", .start = 0x3C0, .end = 0x3DF };
++ static struct resource ega_console_resource =
++ { .name = "ega",
++ .flags = IORESOURCE_IO,
++ .start = 0x3C0,
++ .end = 0x3DF };
+ vga_video_type = VIDEO_TYPE_EGAC;
+ display_desc = "EGA";
+ request_resource(&ioport_resource,
+ &ega_console_resource);
+ } else {
+- static struct resource vga_console_resource
+- = { .name = "vga+", .start = 0x3C0, .end = 0x3DF };
++ static struct resource vga_console_resource =
++ { .name = "vga+",
++ .flags = IORESOURCE_IO,
++ .start = 0x3C0,
++ .end = 0x3DF };
+ vga_video_type = VIDEO_TYPE_VGAC;
+ display_desc = "VGA+";
+ request_resource(&ioport_resource,
+@@ -493,7 +508,10 @@ static const char *vgacon_startup(void)
+ }
+ } else {
+ static struct resource cga_console_resource =
+- { .name = "cga", .start = 0x3D4, .end = 0x3D5 };
++ { .name = "cga",
++ .flags = IORESOURCE_IO,
++ .start = 0x3D4,
++ .end = 0x3D5 };
+ vga_video_type = VIDEO_TYPE_CGA;
+ vga_vram_size = 0x2000;
+ display_desc = "*CGA";
+diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c
+index 9362424c2340..924b3d6c3e9b 100644
+--- a/drivers/video/fbdev/amba-clcd.c
++++ b/drivers/video/fbdev/amba-clcd.c
+@@ -759,8 +759,8 @@ static int clcdfb_of_dma_setup(struct clcd_fb *fb)
+ if (err)
+ return err;
+
+- framesize = fb->panel->mode.xres * fb->panel->mode.yres *
+- fb->panel->bpp / 8;
++ framesize = PAGE_ALIGN(fb->panel->mode.xres * fb->panel->mode.yres *
++ fb->panel->bpp / 8);
+ fb->fb.screen_base = dma_alloc_coherent(&fb->dev->dev, framesize,
+ &dma, GFP_KERNEL);
+ if (!fb->fb.screen_base)
+diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c
+index d0a4e2f79a57..d215faacce04 100644
+--- a/drivers/video/fbdev/sm501fb.c
++++ b/drivers/video/fbdev/sm501fb.c
+@@ -1600,6 +1600,7 @@ static int sm501fb_start(struct sm501fb_info *info,
+ info->fbmem = ioremap(res->start, resource_size(res));
+ if (info->fbmem == NULL) {
+ dev_err(dev, "cannot remap framebuffer\n");
++ ret = -ENXIO;
+ goto err_mem_res;
+ }
+
+diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
+index d2a985e59fcd..105a269ff66a 100644
+--- a/drivers/video/fbdev/udlfb.c
++++ b/drivers/video/fbdev/udlfb.c
+@@ -1487,15 +1487,25 @@ static struct device_attribute fb_device_attrs[] = {
+ static int dlfb_select_std_channel(struct dlfb_data *dev)
+ {
+ int ret;
+- u8 set_def_chn[] = { 0x57, 0xCD, 0xDC, 0xA7,
++ void *buf;
++ static const u8 set_def_chn[] = {
++ 0x57, 0xCD, 0xDC, 0xA7,
+ 0x1C, 0x88, 0x5E, 0x15,
+ 0x60, 0xFE, 0xC6, 0x97,
+ 0x16, 0x3D, 0x47, 0xF2 };
+
++ buf = kmemdup(set_def_chn, sizeof(set_def_chn), GFP_KERNEL);
++
++ if (!buf)
++ return -ENOMEM;
++
+ ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
+ NR_USB_REQUEST_CHANNEL,
+ (USB_DIR_OUT | USB_TYPE_VENDOR), 0, 0,
+- set_def_chn, sizeof(set_def_chn), USB_CTRL_SET_TIMEOUT);
++ buf, sizeof(set_def_chn), USB_CTRL_SET_TIMEOUT);
++
++ kfree(buf);
++
+ return ret;
+ }
+
+diff --git a/drivers/video/fbdev/vfb.c b/drivers/video/fbdev/vfb.c
+index 70a897b1e458..146cc3516f61 100644
+--- a/drivers/video/fbdev/vfb.c
++++ b/drivers/video/fbdev/vfb.c
+@@ -284,8 +284,23 @@ static int vfb_check_var(struct fb_var_screeninfo *var,
+ */
+ static int vfb_set_par(struct fb_info *info)
+ {
++ switch (info->var.bits_per_pixel) {
++ case 1:
++ info->fix.visual = FB_VISUAL_MONO01;
++ break;
++ case 8:
++ info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
++ break;
++ case 16:
++ case 24:
++ case 32:
++ info->fix.visual = FB_VISUAL_TRUECOLOR;
++ break;
++ }
++
+ info->fix.line_length = get_line_length(info->var.xres_virtual,
+ info->var.bits_per_pixel);
++
+ return 0;
+ }
+
+@@ -526,6 +541,8 @@ static int vfb_probe(struct platform_device *dev)
+ goto err2;
+ platform_set_drvdata(dev, info);
+
++ vfb_set_par(info);
++
+ fb_info(info, "Virtual frame buffer device, using %ldK of video memory\n",
+ videomemorysize >> 10);
+ return 0;
+diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c
+index 162689227a23..b73520aaf697 100644
+--- a/drivers/video/hdmi.c
++++ b/drivers/video/hdmi.c
+@@ -321,6 +321,17 @@ int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame)
+ }
+ EXPORT_SYMBOL(hdmi_vendor_infoframe_init);
+
++static int hdmi_vendor_infoframe_length(const struct hdmi_vendor_infoframe *frame)
++{
++ /* for side by side (half) we also need to provide 3D_Ext_Data */
++ if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
++ return 6;
++ else if (frame->vic != 0 || frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
++ return 5;
++ else
++ return 4;
++}
++
+ /**
+ * hdmi_vendor_infoframe_pack() - write a HDMI vendor infoframe to binary buffer
+ * @frame: HDMI infoframe
+@@ -341,19 +352,11 @@ ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
+ u8 *ptr = buffer;
+ size_t length;
+
+- /* empty info frame */
+- if (frame->vic == 0 && frame->s3d_struct == HDMI_3D_STRUCTURE_INVALID)
+- return -EINVAL;
+-
+ /* only one of those can be supplied */
+ if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
+ return -EINVAL;
+
+- /* for side by side (half) we also need to provide 3D_Ext_Data */
+- if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
+- frame->length = 6;
+- else
+- frame->length = 5;
++ frame->length = hdmi_vendor_infoframe_length(frame);
+
+ length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
+
+@@ -372,14 +375,16 @@ ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
+ ptr[5] = 0x0c;
+ ptr[6] = 0x00;
+
+- if (frame->vic) {
+- ptr[7] = 0x1 << 5; /* video format */
+- ptr[8] = frame->vic;
+- } else {
++ if (frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) {
+ ptr[7] = 0x2 << 5; /* video format */
+ ptr[8] = (frame->s3d_struct & 0xf) << 4;
+ if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
+ ptr[9] = (frame->s3d_ext_data & 0xf) << 4;
++ } else if (frame->vic) {
++ ptr[7] = 0x1 << 5; /* video format */
++ ptr[8] = frame->vic;
++ } else {
++ ptr[7] = 0x0 << 5; /* video format */
+ }
+
+ hdmi_infoframe_set_checksum(buffer, length);
+@@ -1161,7 +1166,7 @@ hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
+
+ if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR ||
+ ptr[1] != 1 ||
+- (ptr[2] != 5 && ptr[2] != 6))
++ (ptr[2] != 4 && ptr[2] != 5 && ptr[2] != 6))
+ return -EINVAL;
+
+ length = ptr[2];
+@@ -1189,16 +1194,22 @@ hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
+
+ hvf->length = length;
+
+- if (hdmi_video_format == 0x1) {
+- hvf->vic = ptr[4];
+- } else if (hdmi_video_format == 0x2) {
++ if (hdmi_video_format == 0x2) {
++ if (length != 5 && length != 6)
++ return -EINVAL;
+ hvf->s3d_struct = ptr[4] >> 4;
+ if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) {
+- if (length == 6)
+- hvf->s3d_ext_data = ptr[5] >> 4;
+- else
++ if (length != 6)
+ return -EINVAL;
++ hvf->s3d_ext_data = ptr[5] >> 4;
+ }
++ } else if (hdmi_video_format == 0x1) {
++ if (length != 5)
++ return -EINVAL;
++ hvf->vic = ptr[4];
++ } else {
++ if (length != 4)
++ return -EINVAL;
+ }
+
+ return 0;
+diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
+index 016bd9355190..aa93df5833dc 100644
+--- a/drivers/watchdog/f71808e_wdt.c
++++ b/drivers/watchdog/f71808e_wdt.c
+@@ -450,7 +450,7 @@ static bool watchdog_is_running(void)
+
+ is_running = (superio_inb(watchdog.sioaddr, SIO_REG_ENABLE) & BIT(0))
+ && (superio_inb(watchdog.sioaddr, F71808FG_REG_WDT_CONF)
+- & F71808FG_FLAG_WD_EN);
++ & BIT(F71808FG_FLAG_WD_EN));
+
+ superio_exit(watchdog.sioaddr);
+
+diff --git a/fs/aio.c b/fs/aio.c
+index 480440f4701f..61ada5047da2 100644
+--- a/fs/aio.c
++++ b/fs/aio.c
+@@ -68,9 +68,9 @@ struct aio_ring {
+ #define AIO_RING_PAGES 8
+
+ struct kioctx_table {
+- struct rcu_head rcu;
+- unsigned nr;
+- struct kioctx *table[];
++ struct rcu_head rcu;
++ unsigned nr;
++ struct kioctx __rcu *table[];
+ };
+
+ struct kioctx_cpu {
+@@ -115,7 +115,8 @@ struct kioctx {
+ struct page **ring_pages;
+ long nr_pages;
+
+- struct work_struct free_work;
++ struct rcu_head free_rcu;
++ struct work_struct free_work; /* see free_ioctx() */
+
+ /*
+ * signals when all in-flight requests are done
+@@ -327,7 +328,7 @@ static int aio_ring_remap(struct file *file, struct vm_area_struct *vma)
+ for (i = 0; i < table->nr; i++) {
+ struct kioctx *ctx;
+
+- ctx = table->table[i];
++ ctx = rcu_dereference(table->table[i]);
+ if (ctx && ctx->aio_ring_file == file) {
+ if (!atomic_read(&ctx->dead)) {
+ ctx->user_id = ctx->mmap_base = vma->vm_start;
+@@ -559,6 +560,12 @@ static int kiocb_cancel(struct aio_kiocb *kiocb)
+ return cancel(&kiocb->common);
+ }
+
++/*
++ * free_ioctx() should be RCU delayed to synchronize against the RCU
++ * protected lookup_ioctx() and also needs process context to call
++ * aio_free_ring(), so the double bouncing through kioctx->free_rcu and
++ * ->free_work.
++ */
+ static void free_ioctx(struct work_struct *work)
+ {
+ struct kioctx *ctx = container_of(work, struct kioctx, free_work);
+@@ -572,6 +579,14 @@ static void free_ioctx(struct work_struct *work)
+ kmem_cache_free(kioctx_cachep, ctx);
+ }
+
++static void free_ioctx_rcufn(struct rcu_head *head)
++{
++ struct kioctx *ctx = container_of(head, struct kioctx, free_rcu);
++
++ INIT_WORK(&ctx->free_work, free_ioctx);
++ schedule_work(&ctx->free_work);
++}
++
+ static void free_ioctx_reqs(struct percpu_ref *ref)
+ {
+ struct kioctx *ctx = container_of(ref, struct kioctx, reqs);
+@@ -580,8 +595,8 @@ static void free_ioctx_reqs(struct percpu_ref *ref)
+ if (ctx->rq_wait && atomic_dec_and_test(&ctx->rq_wait->count))
+ complete(&ctx->rq_wait->comp);
+
+- INIT_WORK(&ctx->free_work, free_ioctx);
+- schedule_work(&ctx->free_work);
++ /* Synchronize against RCU protected table->table[] dereferences */
++ call_rcu(&ctx->free_rcu, free_ioctx_rcufn);
+ }
+
+ /*
+@@ -622,9 +637,9 @@ static int ioctx_add_table(struct kioctx *ctx, struct mm_struct *mm)
+ while (1) {
+ if (table)
+ for (i = 0; i < table->nr; i++)
+- if (!table->table[i]) {
++ if (!rcu_access_pointer(table->table[i])) {
+ ctx->id = i;
+- table->table[i] = ctx;
++ rcu_assign_pointer(table->table[i], ctx);
+ spin_unlock(&mm->ioctx_lock);
+
+ /* While kioctx setup is in progress,
+@@ -799,11 +814,11 @@ static int kill_ioctx(struct mm_struct *mm, struct kioctx *ctx,
+ }
+
+ table = rcu_dereference_raw(mm->ioctx_table);
+- WARN_ON(ctx != table->table[ctx->id]);
+- table->table[ctx->id] = NULL;
++ WARN_ON(ctx != rcu_access_pointer(table->table[ctx->id]));
++ RCU_INIT_POINTER(table->table[ctx->id], NULL);
+ spin_unlock(&mm->ioctx_lock);
+
+- /* percpu_ref_kill() will do the necessary call_rcu() */
++ /* free_ioctx_reqs() will do the necessary RCU synchronization */
+ wake_up_all(&ctx->wait);
+
+ /*
+@@ -845,7 +860,8 @@ void exit_aio(struct mm_struct *mm)
+
+ skipped = 0;
+ for (i = 0; i < table->nr; ++i) {
+- struct kioctx *ctx = table->table[i];
++ struct kioctx *ctx =
++ rcu_dereference_protected(table->table[i], true);
+
+ if (!ctx) {
+ skipped++;
+@@ -1034,7 +1050,7 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id)
+ if (!table || id >= table->nr)
+ goto out;
+
+- ctx = table->table[id];
++ ctx = rcu_dereference(table->table[id]);
+ if (ctx && ctx->user_id == ctx_id) {
+ percpu_ref_get(&ctx->users);
+ ret = ctx;
+diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
+index 7a54c6a867c8..500098cdb960 100644
+--- a/fs/autofs4/root.c
++++ b/fs/autofs4/root.c
+@@ -746,7 +746,7 @@ static int autofs4_dir_mkdir(struct inode *dir, struct dentry *dentry, umode_t m
+
+ autofs4_del_active(dentry);
+
+- inode = autofs4_get_inode(dir->i_sb, S_IFDIR | 0555);
++ inode = autofs4_get_inode(dir->i_sb, S_IFDIR | mode);
+ if (!inode)
+ return -ENOMEM;
+ d_add(dentry, inode);
+diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
+index 885f533a34d9..f179946d67ed 100644
+--- a/fs/btrfs/extent_io.c
++++ b/fs/btrfs/extent_io.c
+@@ -2466,7 +2466,7 @@ int end_extent_writepage(struct page *page, int err, u64 start, u64 end)
+ if (!uptodate) {
+ ClearPageUptodate(page);
+ SetPageError(page);
+- ret = ret < 0 ? ret : -EIO;
++ ret = err < 0 ? err : -EIO;
+ mapping_set_error(page->mapping, ret);
+ }
+ return 0;
+diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
+index 5fe5314270fd..68ca200b714a 100644
+--- a/fs/btrfs/send.c
++++ b/fs/btrfs/send.c
+@@ -4759,13 +4759,19 @@ static int is_extent_unchanged(struct send_ctx *sctx,
+ while (key.offset < ekey->offset + left_len) {
+ ei = btrfs_item_ptr(eb, slot, struct btrfs_file_extent_item);
+ right_type = btrfs_file_extent_type(eb, ei);
+- if (right_type != BTRFS_FILE_EXTENT_REG) {
++ if (right_type != BTRFS_FILE_EXTENT_REG &&
++ right_type != BTRFS_FILE_EXTENT_INLINE) {
+ ret = 0;
+ goto out;
+ }
+
+ right_disknr = btrfs_file_extent_disk_bytenr(eb, ei);
+- right_len = btrfs_file_extent_num_bytes(eb, ei);
++ if (right_type == BTRFS_FILE_EXTENT_INLINE) {
++ right_len = btrfs_file_extent_inline_len(eb, slot, ei);
++ right_len = PAGE_ALIGN(right_len);
++ } else {
++ right_len = btrfs_file_extent_num_bytes(eb, ei);
++ }
+ right_offset = btrfs_file_extent_offset(eb, ei);
+ right_gen = btrfs_file_extent_generation(eb, ei);
+
+@@ -4779,6 +4785,19 @@ static int is_extent_unchanged(struct send_ctx *sctx,
+ goto out;
+ }
+
++ /*
++ * We just wanted to see if when we have an inline extent, what
++ * follows it is a regular extent (wanted to check the above
++ * condition for inline extents too). This should normally not
++ * happen but it's possible for example when we have an inline
++ * compressed extent representing data with a size matching
++ * the page size (currently the same as sector size).
++ */
++ if (right_type == BTRFS_FILE_EXTENT_INLINE) {
++ ret = 0;
++ goto out;
++ }
++
+ left_offset_fixed = left_offset;
+ if (key.offset < ekey->offset) {
+ /* Fix the right offset for 2a and 7. */
+diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
+index 18a3573e1444..4a0318ee4ed1 100644
+--- a/fs/btrfs/volumes.c
++++ b/fs/btrfs/volumes.c
+@@ -4370,10 +4370,13 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
+ if (devs_max && ndevs > devs_max)
+ ndevs = devs_max;
+ /*
+- * the primary goal is to maximize the number of stripes, so use as many
+- * devices as possible, even if the stripes are not maximum sized.
++ * The primary goal is to maximize the number of stripes, so use as
++ * many devices as possible, even if the stripes are not maximum sized.
++ *
++ * The DUP profile stores more than one stripe per device, the
++ * max_avail is the total size so we have to adjust.
+ */
+- stripe_size = devices_info[ndevs-1].max_avail;
++ stripe_size = div_u64(devices_info[ndevs - 1].max_avail, dev_stripes);
+ num_stripes = ndevs * dev_stripes;
+
+ /*
+@@ -4413,8 +4416,6 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
+ stripe_size = devices_info[ndevs-1].max_avail;
+ }
+
+- stripe_size = div_u64(stripe_size, dev_stripes);
+-
+ /* align to BTRFS_STRIPE_LEN */
+ stripe_size = div_u64(stripe_size, raid_stripe_len);
+ stripe_size *= raid_stripe_len;
+diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
+index 49a0d6b027c1..76dacd5307b9 100644
+--- a/fs/cifs/dir.c
++++ b/fs/cifs/dir.c
+@@ -673,6 +673,9 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
+ goto mknod_out;
+ }
+
++ if (!S_ISCHR(mode) && !S_ISBLK(mode))
++ goto mknod_out;
++
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
+ goto mknod_out;
+
+@@ -681,10 +684,8 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
+
+ buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+ if (buf == NULL) {
+- kfree(full_path);
+ rc = -ENOMEM;
+- free_xid(xid);
+- return rc;
++ goto mknod_out;
+ }
+
+ if (backup_cred(cifs_sb))
+@@ -731,7 +732,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
+ pdev->minor = cpu_to_le64(MINOR(device_number));
+ rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
+ &bytes_written, iov, 1);
+- } /* else if (S_ISFIFO) */
++ }
+ tcon->ses->server->ops->close(xid, tcon, &fid);
+ d_drop(direntry);
+
+diff --git a/fs/cifs/file.c b/fs/cifs/file.c
+index 1366d2151389..6f20a8ca5e7c 100644
+--- a/fs/cifs/file.c
++++ b/fs/cifs/file.c
+@@ -582,7 +582,7 @@ cifs_relock_file(struct cifsFileInfo *cfile)
+ struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
+ int rc = 0;
+
+- down_read(&cinode->lock_sem);
++ down_read_nested(&cinode->lock_sem, SINGLE_DEPTH_NESTING);
+ if (cinode->can_cache_brlcks) {
+ /* can cache locks - no need to relock */
+ up_read(&cinode->lock_sem);
+diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
+index abae6dd2c6b9..cc88f4f0325e 100644
+--- a/fs/cifs/netmisc.c
++++ b/fs/cifs/netmisc.c
+@@ -980,10 +980,10 @@ struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
+ cifs_dbg(VFS, "illegal hours %d\n", st->Hours);
+ days = sd->Day;
+ month = sd->Month;
+- if ((days > 31) || (month > 12)) {
++ if (days < 1 || days > 31 || month < 1 || month > 12) {
+ cifs_dbg(VFS, "illegal date, month %d day: %d\n", month, days);
+- if (month > 12)
+- month = 12;
++ days = clamp(days, 1, 31);
++ month = clamp(month, 1, 12);
+ }
+ month -= 1;
+ days += total_days_of_prev_months[month];
+diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
+index 5f9229ddf335..11b562ac8f31 100644
+--- a/fs/cifs/sess.c
++++ b/fs/cifs/sess.c
+@@ -344,13 +344,12 @@ void build_ntlmssp_negotiate_blob(unsigned char *pbuffer,
+ /* BB is NTLMV2 session security format easier to use here? */
+ flags = NTLMSSP_NEGOTIATE_56 | NTLMSSP_REQUEST_TARGET |
+ NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE |
+- NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC;
+- if (ses->server->sign) {
++ NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC |
++ NTLMSSP_NEGOTIATE_SEAL;
++ if (ses->server->sign)
+ flags |= NTLMSSP_NEGOTIATE_SIGN;
+- if (!ses->server->session_estab ||
+- ses->ntlmssp->sesskey_per_smbsess)
+- flags |= NTLMSSP_NEGOTIATE_KEY_XCH;
+- }
++ if (!ses->server->session_estab || ses->ntlmssp->sesskey_per_smbsess)
++ flags |= NTLMSSP_NEGOTIATE_KEY_XCH;
+
+ sec_blob->NegotiateFlags = cpu_to_le32(flags);
+
+@@ -407,13 +406,12 @@ int build_ntlmssp_auth_blob(unsigned char **pbuffer,
+ flags = NTLMSSP_NEGOTIATE_56 |
+ NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_TARGET_INFO |
+ NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE |
+- NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC;
+- if (ses->server->sign) {
++ NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC |
++ NTLMSSP_NEGOTIATE_SEAL;
++ if (ses->server->sign)
+ flags |= NTLMSSP_NEGOTIATE_SIGN;
+- if (!ses->server->session_estab ||
+- ses->ntlmssp->sesskey_per_smbsess)
+- flags |= NTLMSSP_NEGOTIATE_KEY_XCH;
+- }
++ if (!ses->server->session_estab || ses->ntlmssp->sesskey_per_smbsess)
++ flags |= NTLMSSP_NEGOTIATE_KEY_XCH;
+
+ tmp = *pbuffer + sizeof(AUTHENTICATE_MESSAGE);
+ sec_blob->NegotiateFlags = cpu_to_le32(flags);
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 69422157c71b..4b4b1cbc69b2 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -754,10 +754,8 @@ ssetup_exit:
+
+ if (!rc) {
+ mutex_lock(&server->srv_mutex);
+- if (server->sign && server->ops->generate_signingkey) {
++ if (server->ops->generate_signingkey) {
+ rc = server->ops->generate_signingkey(ses);
+- kfree(ses->auth_key.response);
+- ses->auth_key.response = NULL;
+ if (rc) {
+ cifs_dbg(FYI,
+ "SMB3 session key generation failed\n");
+@@ -779,10 +777,6 @@ ssetup_exit:
+ }
+
+ keygen_exit:
+- if (!server->sign) {
+- kfree(ses->auth_key.response);
+- ses->auth_key.response = NULL;
+- }
+ if (spnego_key) {
+ key_invalidate(spnego_key);
+ key_put(spnego_key);
+@@ -921,15 +915,19 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
+ goto tcon_exit;
+ }
+
+- if (rsp->ShareType & SMB2_SHARE_TYPE_DISK)
++ switch (rsp->ShareType) {
++ case SMB2_SHARE_TYPE_DISK:
+ cifs_dbg(FYI, "connection to disk share\n");
+- else if (rsp->ShareType & SMB2_SHARE_TYPE_PIPE) {
++ break;
++ case SMB2_SHARE_TYPE_PIPE:
+ tcon->ipc = true;
+ cifs_dbg(FYI, "connection to pipe share\n");
+- } else if (rsp->ShareType & SMB2_SHARE_TYPE_PRINT) {
+- tcon->print = true;
++ break;
++ case SMB2_SHARE_TYPE_PRINT:
++ tcon->ipc = true;
+ cifs_dbg(FYI, "connection to printer\n");
+- } else {
++ break;
++ default:
+ cifs_dbg(VFS, "unknown share type %d\n", rsp->ShareType);
+ rc = -EOPNOTSUPP;
+ goto tcon_error_exit;
+@@ -1353,6 +1351,9 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
+ } else
+ iov[0].iov_len = get_rfc1002_length(req) + 4;
+
++ /* validate negotiate request must be signed - see MS-SMB2 3.2.5.5 */
++ if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO)
++ req->hdr.Flags |= SMB2_FLAGS_SIGNED;
+
+ rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0);
+ rsp = (struct smb2_ioctl_rsp *)iov[0].iov_base;
+diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
+index 6b8e2f091f5b..5e6798a3c9b6 100644
+--- a/fs/compat_ioctl.c
++++ b/fs/compat_ioctl.c
+@@ -811,7 +811,7 @@ static int compat_ioctl_preallocate(struct file *file,
+ */
+ #define XFORM(i) (((i) ^ ((i) << 27) ^ ((i) << 17)) & 0xffffffff)
+
+-#define COMPATIBLE_IOCTL(cmd) XFORM(cmd),
++#define COMPATIBLE_IOCTL(cmd) XFORM((u32)cmd),
+ /* ioctl should not be warned about even if it's not implemented.
+ Valid reasons to use this:
+ - It is implemented with ->compat_ioctl on some device, but programs
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 5ca8f0b2b897..c19576fa779e 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -607,11 +607,16 @@ again:
+ spin_unlock(&parent->d_lock);
+ goto again;
+ }
+- rcu_read_unlock();
+- if (parent != dentry)
++ if (parent != dentry) {
+ spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+- else
++ if (unlikely(dentry->d_lockref.count < 0)) {
++ spin_unlock(&parent->d_lock);
++ parent = NULL;
++ }
++ } else {
+ parent = NULL;
++ }
++ rcu_read_unlock();
+ return parent;
+ }
+
+diff --git a/fs/ext4/file.c b/fs/ext4/file.c
+index f57cf1c42ca3..79f974ba1999 100644
+--- a/fs/ext4/file.c
++++ b/fs/ext4/file.c
+@@ -351,7 +351,7 @@ static int ext4_find_unwritten_pgoff(struct inode *inode,
+ int i, num;
+ unsigned long nr_pages;
+
+- num = min_t(pgoff_t, end - index, PAGEVEC_SIZE);
++ num = min_t(pgoff_t, end - index, PAGEVEC_SIZE - 1) + 1;
+ nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index,
+ (pgoff_t)num);
+ if (nr_pages == 0)
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index c1feaf011515..25fcf7b2bdaa 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -1476,6 +1476,8 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd,
+ BUG_ON(!PageLocked(page));
+ BUG_ON(PageWriteback(page));
+ if (invalidate) {
++ if (page_mapped(page))
++ clear_page_dirty_for_io(page);
+ block_invalidatepage(page, 0, PAGE_CACHE_SIZE);
+ ClearPageUptodate(page);
+ }
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index c67056a8c901..1f5062222425 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -2126,6 +2126,8 @@ static int ext4_check_descriptors(struct super_block *sb,
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Block bitmap for group %u overlaps "
+ "superblock", i);
++ if (!(sb->s_flags & MS_RDONLY))
++ return 0;
+ }
+ if (block_bitmap < first_block || block_bitmap > last_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+@@ -2138,6 +2140,8 @@ static int ext4_check_descriptors(struct super_block *sb,
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Inode bitmap for group %u overlaps "
+ "superblock", i);
++ if (!(sb->s_flags & MS_RDONLY))
++ return 0;
+ }
+ if (inode_bitmap < first_block || inode_bitmap > last_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+@@ -2150,6 +2154,8 @@ static int ext4_check_descriptors(struct super_block *sb,
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Inode table for group %u overlaps "
+ "superblock", i);
++ if (!(sb->s_flags & MS_RDONLY))
++ return 0;
+ }
+ if (inode_table < first_block ||
+ inode_table + sbi->s_itb_per_group - 1 > last_block) {
+diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
+index e4d224315a1f..0bb394b4f04b 100644
+--- a/fs/jbd2/journal.c
++++ b/fs/jbd2/journal.c
+@@ -275,11 +275,11 @@ loop:
+ goto loop;
+
+ end_loop:
+- write_unlock(&journal->j_state_lock);
+ del_timer_sync(&journal->j_commit_timer);
+ journal->j_task = NULL;
+ wake_up(&journal->j_wait_done_commit);
+ jbd_debug(1, "Journal thread exiting.\n");
++ write_unlock(&journal->j_state_lock);
+ return 0;
+ }
+
+@@ -923,7 +923,7 @@ out:
+ }
+
+ /*
+- * This is a variaon of __jbd2_update_log_tail which checks for validity of
++ * This is a variation of __jbd2_update_log_tail which checks for validity of
+ * provided log tail and locks j_checkpoint_mutex. So it is safe against races
+ * with other threads updating log tail.
+ */
+@@ -1399,6 +1399,9 @@ int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
+ journal_superblock_t *sb = journal->j_superblock;
+ int ret;
+
++ if (is_journal_aborted(journal))
++ return -EIO;
++
+ BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
+ jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n",
+ tail_block, tail_tid);
+diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
+index deff03371626..4ddcaf949a16 100644
+--- a/fs/jbd2/transaction.c
++++ b/fs/jbd2/transaction.c
+@@ -515,6 +515,7 @@ int jbd2_journal_start_reserved(handle_t *handle, unsigned int type,
+ */
+ ret = start_this_handle(journal, handle, GFP_NOFS);
+ if (ret < 0) {
++ handle->h_journal = journal;
+ jbd2_journal_free_reserved(handle);
+ return ret;
+ }
+diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
+index d86c5e3176a1..600da1a4df29 100644
+--- a/fs/jffs2/super.c
++++ b/fs/jffs2/super.c
+@@ -345,7 +345,7 @@ static void jffs2_put_super (struct super_block *sb)
+ static void jffs2_kill_sb(struct super_block *sb)
+ {
+ struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
+- if (!(sb->s_flags & MS_RDONLY))
++ if (c && !(sb->s_flags & MS_RDONLY))
+ jffs2_stop_garbage_collect_thread(c);
+ kill_mtd_super(sb);
+ kfree(c);
+diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
+index 55505cbe11af..375efc1ced83 100644
+--- a/fs/lockd/svc.c
++++ b/fs/lockd/svc.c
+@@ -129,6 +129,8 @@ lockd(void *vrqstp)
+ {
+ int err = 0;
+ struct svc_rqst *rqstp = vrqstp;
++ struct net *net = &init_net;
++ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ /* try_to_freeze() is called from svc_recv() */
+ set_freezable();
+@@ -173,6 +175,8 @@ lockd(void *vrqstp)
+ if (nlmsvc_ops)
+ nlmsvc_invalidate_all();
+ nlm_shutdown_hosts();
++ cancel_delayed_work_sync(&ln->grace_period_end);
++ locks_end_grace(&ln->lockd_manager);
+ return 0;
+ }
+
+@@ -267,8 +271,6 @@ static void lockd_down_net(struct svc_serv *serv, struct net *net)
+ if (ln->nlmsvc_users) {
+ if (--ln->nlmsvc_users == 0) {
+ nlm_shutdown_hosts_net(net);
+- cancel_delayed_work_sync(&ln->grace_period_end);
+- locks_end_grace(&ln->lockd_manager);
+ svc_shutdown_net(serv, net);
+ dprintk("lockd_down_net: per-net data destroyed; net=%p\n", net);
+ }
+diff --git a/fs/namei.c b/fs/namei.c
+index 0d97235019a9..4d333d26a028 100644
+--- a/fs/namei.c
++++ b/fs/namei.c
+@@ -219,9 +219,10 @@ getname_kernel(const char * filename)
+ if (len <= EMBEDDED_NAME_MAX) {
+ result->name = (char *)result->iname;
+ } else if (len <= PATH_MAX) {
++ const size_t size = offsetof(struct filename, iname[1]);
+ struct filename *tmp;
+
+- tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
++ tmp = kmalloc(size, GFP_KERNEL);
+ if (unlikely(!tmp)) {
+ __putname(result);
+ return ERR_PTR(-ENOMEM);
+diff --git a/fs/namespace.c b/fs/namespace.c
+index 58b281ad30d5..45fc042b84ce 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -1007,7 +1007,8 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root,
+ goto out_free;
+ }
+
+- mnt->mnt.mnt_flags = old->mnt.mnt_flags & ~(MNT_WRITE_HOLD|MNT_MARKED);
++ mnt->mnt.mnt_flags = old->mnt.mnt_flags;
++ mnt->mnt.mnt_flags &= ~(MNT_WRITE_HOLD|MNT_MARKED|MNT_INTERNAL);
+ /* Don't allow unprivileged users to change mount flags */
+ if (flag & CL_UNPRIVILEGED) {
+ mnt->mnt.mnt_flags |= MNT_LOCK_ATIME;
+diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c
+index 88dbbc9fcf4d..f571570a2e72 100644
+--- a/fs/ncpfs/ncplib_kernel.c
++++ b/fs/ncpfs/ncplib_kernel.c
+@@ -980,6 +980,10 @@ ncp_read_kernel(struct ncp_server *server, const char *file_id,
+ goto out;
+ }
+ *bytes_read = ncp_reply_be16(server, 0);
++ if (*bytes_read > to_read) {
++ result = -EINVAL;
++ goto out;
++ }
+ source = ncp_reply_data(server, 2 + (offset & 1));
+
+ memcpy(target, source, *bytes_read);
+diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
+index cb050d1e8146..10b055105b36 100644
+--- a/fs/nfs/direct.c
++++ b/fs/nfs/direct.c
+@@ -86,9 +86,9 @@ struct nfs_direct_req {
+ struct nfs_direct_mirror mirrors[NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX];
+ int mirror_count;
+
++ loff_t io_start; /* Start offset for I/O */
+ ssize_t count, /* bytes actually processed */
+ bytes_left, /* bytes left to be sent */
+- io_start, /* start of IO */
+ error; /* any reported error */
+ struct completion completion; /* wait for i/o completion */
+
+diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
+index c2abdc7db6c3..4af8e428e4c9 100644
+--- a/fs/nfs/flexfilelayout/flexfilelayout.c
++++ b/fs/nfs/flexfilelayout/flexfilelayout.c
+@@ -307,6 +307,7 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh,
+ goto out_err_free;
+
+ /* fh */
++ rc = -EIO;
+ p = xdr_inline_decode(&stream, 4);
+ if (!p)
+ goto out_err_free;
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index 0fb0dc739fb2..9b6950a5fcc6 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -7531,6 +7531,12 @@ static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nf
+ /* fall through */
+ case -NFS4ERR_RETRY_UNCACHED_REP:
+ return -EAGAIN;
++ case -NFS4ERR_BADSESSION:
++ case -NFS4ERR_DEADSESSION:
++ case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
++ nfs4_schedule_session_recovery(clp->cl_session,
++ task->tk_status);
++ break;
+ default:
+ nfs4_schedule_lease_recovery(clp);
+ }
+@@ -7609,7 +7615,6 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
+ if (status == 0)
+ status = task->tk_status;
+ rpc_put_task(task);
+- return 0;
+ out:
+ dprintk("<-- %s status=%d\n", __func__, status);
+ return status;
+diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
+index f8d2902ec118..0b50bdfbc32f 100644
+--- a/fs/nfs/nfs4state.c
++++ b/fs/nfs/nfs4state.c
+@@ -1591,13 +1591,14 @@ static void nfs4_state_start_reclaim_reboot(struct nfs_client *clp)
+ nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_reboot);
+ }
+
+-static void nfs4_reclaim_complete(struct nfs_client *clp,
++static int nfs4_reclaim_complete(struct nfs_client *clp,
+ const struct nfs4_state_recovery_ops *ops,
+ struct rpc_cred *cred)
+ {
+ /* Notify the server we're done reclaiming our state */
+ if (ops->reclaim_complete)
+- (void)ops->reclaim_complete(clp, cred);
++ return ops->reclaim_complete(clp, cred);
++ return 0;
+ }
+
+ static void nfs4_clear_reclaim_server(struct nfs_server *server)
+@@ -1644,13 +1645,16 @@ static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
+ {
+ const struct nfs4_state_recovery_ops *ops;
+ struct rpc_cred *cred;
++ int err;
+
+ if (!nfs4_state_clear_reclaim_reboot(clp))
+ return;
+ ops = clp->cl_mvops->reboot_recovery_ops;
+ cred = nfs4_get_clid_cred(clp);
+- nfs4_reclaim_complete(clp, ops, cred);
++ err = nfs4_reclaim_complete(clp, ops, cred);
+ put_rpccred(cred);
++ if (err == -NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
++ set_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state);
+ }
+
+ static void nfs_delegation_clear_all(struct nfs_client *clp)
+diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
+index 93d355c8b467..50d40b129737 100644
+--- a/fs/nfs/pagelist.c
++++ b/fs/nfs/pagelist.c
+@@ -1277,8 +1277,10 @@ void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *desc, pgoff_t index)
+ mirror = &desc->pg_mirrors[midx];
+ if (!list_empty(&mirror->pg_list)) {
+ prev = nfs_list_entry(mirror->pg_list.prev);
+- if (index != prev->wb_index + 1)
+- nfs_pageio_complete_mirror(desc, midx);
++ if (index != prev->wb_index + 1) {
++ nfs_pageio_complete(desc);
++ break;
++ }
+ }
+ }
+ }
+diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
+index 1e58fa0a28a3..73c93f2d6353 100644
+--- a/fs/nfsd/nfs4proc.c
++++ b/fs/nfsd/nfs4proc.c
+@@ -1256,14 +1256,14 @@ nfsd4_layoutget(struct svc_rqst *rqstp,
+ const struct nfsd4_layout_ops *ops;
+ struct nfs4_layout_stateid *ls;
+ __be32 nfserr;
+- int accmode;
++ int accmode = NFSD_MAY_READ_IF_EXEC;
+
+ switch (lgp->lg_seg.iomode) {
+ case IOMODE_READ:
+- accmode = NFSD_MAY_READ;
++ accmode |= NFSD_MAY_READ;
+ break;
+ case IOMODE_RW:
+- accmode = NFSD_MAY_READ | NFSD_MAY_WRITE;
++ accmode |= NFSD_MAY_READ | NFSD_MAY_WRITE;
+ break;
+ default:
+ dprintk("%s: invalid iomode %d\n",
+diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
+index 5eaee287be23..9bfcd93448dc 100644
+--- a/fs/nfsd/vfs.c
++++ b/fs/nfsd/vfs.c
+@@ -92,6 +92,12 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
+ err = follow_down(&path);
+ if (err < 0)
+ goto out;
++ if (path.mnt == exp->ex_path.mnt && path.dentry == dentry &&
++ nfsd_mountpoint(dentry, exp) == 2) {
++ /* This is only a mountpoint in some other namespace */
++ path_put(&path);
++ goto out;
++ }
+
+ exp2 = rqst_exp_get_by_name(rqstp, &path);
+ if (IS_ERR(exp2)) {
+@@ -165,16 +171,26 @@ static int nfsd_lookup_parent(struct svc_rqst *rqstp, struct dentry *dparent, st
+ /*
+ * For nfsd purposes, we treat V4ROOT exports as though there was an
+ * export at *every* directory.
++ * We return:
++ * '1' if this dentry *must* be an export point,
++ * '2' if it might be, if there is really a mount here, and
++ * '0' if there is no chance of an export point here.
+ */
+ int nfsd_mountpoint(struct dentry *dentry, struct svc_export *exp)
+ {
+- if (d_mountpoint(dentry))
++ if (!d_inode(dentry))
++ return 0;
++ if (exp->ex_flags & NFSEXP_V4ROOT)
+ return 1;
+ if (nfsd4_is_junction(dentry))
+ return 1;
+- if (!(exp->ex_flags & NFSEXP_V4ROOT))
+- return 0;
+- return d_inode(dentry) != NULL;
++ if (d_mountpoint(dentry))
++ /*
++ * Might only be a mountpoint in a different namespace,
++ * but we need to check.
++ */
++ return 2;
++ return 0;
+ }
+
+ __be32
+diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
+index e0e5f7c3c99f..8a459b179183 100644
+--- a/fs/notify/fanotify/fanotify.c
++++ b/fs/notify/fanotify/fanotify.c
+@@ -92,7 +92,7 @@ static bool fanotify_should_send_event(struct fsnotify_mark *inode_mark,
+ u32 event_mask,
+ void *data, int data_type)
+ {
+- __u32 marks_mask, marks_ignored_mask;
++ __u32 marks_mask = 0, marks_ignored_mask = 0;
+ struct path *path = data;
+
+ pr_debug("%s: inode_mark=%p vfsmnt_mark=%p mask=%x data=%p"
+@@ -108,24 +108,20 @@ static bool fanotify_should_send_event(struct fsnotify_mark *inode_mark,
+ !d_can_lookup(path->dentry))
+ return false;
+
+- if (inode_mark && vfsmnt_mark) {
+- marks_mask = (vfsmnt_mark->mask | inode_mark->mask);
+- marks_ignored_mask = (vfsmnt_mark->ignored_mask | inode_mark->ignored_mask);
+- } else if (inode_mark) {
+- /*
+- * if the event is for a child and this inode doesn't care about
+- * events on the child, don't send it!
+- */
+- if ((event_mask & FS_EVENT_ON_CHILD) &&
+- !(inode_mark->mask & FS_EVENT_ON_CHILD))
+- return false;
+- marks_mask = inode_mark->mask;
+- marks_ignored_mask = inode_mark->ignored_mask;
+- } else if (vfsmnt_mark) {
+- marks_mask = vfsmnt_mark->mask;
+- marks_ignored_mask = vfsmnt_mark->ignored_mask;
+- } else {
+- BUG();
++ /*
++ * if the event is for a child and this inode doesn't care about
++ * events on the child, don't send it!
++ */
++ if (inode_mark &&
++ (!(event_mask & FS_EVENT_ON_CHILD) ||
++ (inode_mark->mask & FS_EVENT_ON_CHILD))) {
++ marks_mask |= inode_mark->mask;
++ marks_ignored_mask |= inode_mark->ignored_mask;
++ }
++
++ if (vfsmnt_mark) {
++ marks_mask |= vfsmnt_mark->mask;
++ marks_ignored_mask |= vfsmnt_mark->ignored_mask;
+ }
+
+ if (d_is_dir(path->dentry) &&
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index d293034ae2cb..e73f0070a0fc 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -274,6 +274,16 @@ ssize_t ovl_getxattr(struct dentry *dentry, const char *name,
+ return vfs_getxattr(realpath.dentry, name, value, size);
+ }
+
++static bool ovl_can_list(const char *s)
++{
++ /* List all non-trusted xatts */
++ if (strncmp(s, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) != 0)
++ return true;
++
++ /* Never list trusted.overlay, list other trusted for superuser only */
++ return !ovl_is_private_xattr(s) && capable(CAP_SYS_ADMIN);
++}
++
+ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)
+ {
+ struct path realpath;
+@@ -298,7 +308,7 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)
+ return -EIO;
+
+ len -= slen;
+- if (ovl_is_private_xattr(s)) {
++ if (!ovl_can_list(s)) {
+ res -= slen;
+ memmove(s, s + slen, len);
+ } else {
+diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
+index 9d6486d416a3..00985f9db9f7 100644
+--- a/fs/reiserfs/journal.c
++++ b/fs/reiserfs/journal.c
+@@ -1961,7 +1961,7 @@ static int do_journal_release(struct reiserfs_transaction_handle *th,
+ * will be requeued because superblock is being shutdown and doesn't
+ * have MS_ACTIVE set.
+ */
+- cancel_delayed_work_sync(&REISERFS_SB(sb)->old_work);
++ reiserfs_cancel_old_flush(sb);
+ /* wait for all commits to finish */
+ cancel_delayed_work_sync(&SB_JOURNAL(sb)->j_work);
+
+@@ -2643,7 +2643,7 @@ static int journal_init_dev(struct super_block *super,
+ if (IS_ERR(journal->j_dev_bd)) {
+ result = PTR_ERR(journal->j_dev_bd);
+ journal->j_dev_bd = NULL;
+- reiserfs_warning(super,
++ reiserfs_warning(super, "sh-457",
+ "journal_init_dev: Cannot open '%s': %i",
+ jdev_name, result);
+ return result;
+diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h
+index 5dcf3ab83886..6ca00471afbf 100644
+--- a/fs/reiserfs/reiserfs.h
++++ b/fs/reiserfs/reiserfs.h
+@@ -2948,6 +2948,7 @@ int reiserfs_allocate_list_bitmaps(struct super_block *s,
+ struct reiserfs_list_bitmap *, unsigned int);
+
+ void reiserfs_schedule_old_flush(struct super_block *s);
++void reiserfs_cancel_old_flush(struct super_block *s);
+ void add_save_link(struct reiserfs_transaction_handle *th,
+ struct inode *inode, int truncate);
+ int remove_save_link(struct inode *inode, int truncate);
+diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
+index cf6fa25f884b..45ec0e91010a 100644
+--- a/fs/reiserfs/super.c
++++ b/fs/reiserfs/super.c
+@@ -89,7 +89,9 @@ static void flush_old_commits(struct work_struct *work)
+ s = sbi->s_journal->j_work_sb;
+
+ spin_lock(&sbi->old_work_lock);
+- sbi->work_queued = 0;
++ /* Avoid clobbering the cancel state... */
++ if (sbi->work_queued == 1)
++ sbi->work_queued = 0;
+ spin_unlock(&sbi->old_work_lock);
+
+ reiserfs_sync_fs(s, 1);
+@@ -116,21 +118,22 @@ void reiserfs_schedule_old_flush(struct super_block *s)
+ spin_unlock(&sbi->old_work_lock);
+ }
+
+-static void cancel_old_flush(struct super_block *s)
++void reiserfs_cancel_old_flush(struct super_block *s)
+ {
+ struct reiserfs_sb_info *sbi = REISERFS_SB(s);
+
+- cancel_delayed_work_sync(&REISERFS_SB(s)->old_work);
+ spin_lock(&sbi->old_work_lock);
+- sbi->work_queued = 0;
++ /* Make sure no new flushes will be queued */
++ sbi->work_queued = 2;
+ spin_unlock(&sbi->old_work_lock);
++ cancel_delayed_work_sync(&REISERFS_SB(s)->old_work);
+ }
+
+ static int reiserfs_freeze(struct super_block *s)
+ {
+ struct reiserfs_transaction_handle th;
+
+- cancel_old_flush(s);
++ reiserfs_cancel_old_flush(s);
+
+ reiserfs_write_lock(s);
+ if (!(s->s_flags & MS_RDONLY)) {
+@@ -151,7 +154,13 @@ static int reiserfs_freeze(struct super_block *s)
+
+ static int reiserfs_unfreeze(struct super_block *s)
+ {
++ struct reiserfs_sb_info *sbi = REISERFS_SB(s);
++
+ reiserfs_allow_writes(s);
++ spin_lock(&sbi->old_work_lock);
++ /* Allow old_work to run again */
++ sbi->work_queued = 0;
++ spin_unlock(&sbi->old_work_lock);
+ return 0;
+ }
+
+@@ -2177,7 +2186,7 @@ error_unlocked:
+ if (sbi->commit_wq)
+ destroy_workqueue(sbi->commit_wq);
+
+- cancel_delayed_work_sync(&REISERFS_SB(s)->old_work);
++ reiserfs_cancel_old_flush(s);
+
+ reiserfs_free_bitmap_cache(s);
+ if (SB_BUFFER_WITH_SB(s))
+diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
+index 75e6f04bb795..48ab0c462f21 100644
+--- a/fs/ubifs/super.c
++++ b/fs/ubifs/super.c
+@@ -1724,8 +1724,11 @@ static void ubifs_remount_ro(struct ubifs_info *c)
+
+ dbg_save_space_info(c);
+
+- for (i = 0; i < c->jhead_cnt; i++)
+- ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ for (i = 0; i < c->jhead_cnt; i++) {
++ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ if (err)
++ ubifs_ro_mode(c, err);
++ }
+
+ c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY);
+ c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
+@@ -1791,8 +1794,11 @@ static void ubifs_put_super(struct super_block *sb)
+ int err;
+
+ /* Synchronize write-buffers */
+- for (i = 0; i < c->jhead_cnt; i++)
+- ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ for (i = 0; i < c->jhead_cnt; i++) {
++ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ if (err)
++ ubifs_ro_mode(c, err);
++ }
+
+ /*
+ * We are being cleanly unmounted which means the
+diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
+index d1e49d52b640..de179993e039 100644
+--- a/include/linux/compiler-clang.h
++++ b/include/linux/compiler-clang.h
+@@ -10,3 +10,8 @@
+ #undef uninitialized_var
+ #define uninitialized_var(x) x = *(&(x))
+ #endif
++
++/* same as gcc, this was present in clang-2.6 so we can assume it works
++ * with any version that can compile the kernel
++ */
++#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
+diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
+index a91b3b75da0f..bb3a4bb35183 100644
+--- a/include/linux/cpumask.h
++++ b/include/linux/cpumask.h
+@@ -661,6 +661,11 @@ void alloc_bootmem_cpumask_var(cpumask_var_t *mask);
+ void free_cpumask_var(cpumask_var_t mask);
+ void free_bootmem_cpumask_var(cpumask_var_t mask);
+
++static inline bool cpumask_available(cpumask_var_t mask)
++{
++ return mask != NULL;
++}
++
+ #else
+ typedef struct cpumask cpumask_var_t[1];
+
+@@ -701,6 +706,11 @@ static inline void free_cpumask_var(cpumask_var_t mask)
+ static inline void free_bootmem_cpumask_var(cpumask_var_t mask)
+ {
+ }
++
++static inline bool cpumask_available(cpumask_var_t mask)
++{
++ return true;
++}
+ #endif /* CONFIG_CPUMASK_OFFSTACK */
+
+ /* It's common to want to use cpu_all_mask in struct member initializers,
+diff --git a/include/linux/hid.h b/include/linux/hid.h
+index 176b43670e5d..123852d873fa 100644
+--- a/include/linux/hid.h
++++ b/include/linux/hid.h
+@@ -793,7 +793,7 @@ extern int hidinput_connect(struct hid_device *hid, unsigned int force);
+ extern void hidinput_disconnect(struct hid_device *);
+
+ int hid_set_field(struct hid_field *, unsigned, __s32);
+-int hid_input_report(struct hid_device *, int type, u8 *, int, int);
++int hid_input_report(struct hid_device *, int type, u8 *, u32, int);
+ int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
+ struct hid_field *hidinput_get_led_field(struct hid_device *hid);
+ unsigned int hidinput_count_leds(struct hid_device *hid);
+@@ -1096,13 +1096,13 @@ static inline void hid_hw_wait(struct hid_device *hdev)
+ *
+ * @report: the report we want to know the length
+ */
+-static inline int hid_report_len(struct hid_report *report)
++static inline u32 hid_report_len(struct hid_report *report)
+ {
+ /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
+ return ((report->size - 1) >> 3) + 1 + (report->id > 0);
+ }
+
+-int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
++int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
+ int interrupt);
+
+ /* HID quirks API */
+diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
+index 99de81a5a4c6..adbf5b313ff8 100644
+--- a/include/linux/if_vlan.h
++++ b/include/linux/if_vlan.h
+@@ -585,7 +585,7 @@ static inline bool skb_vlan_tagged(const struct sk_buff *skb)
+ * Returns true if the skb is tagged with multiple vlan headers, regardless
+ * of whether it is hardware accelerated or not.
+ */
+-static inline bool skb_vlan_tagged_multi(const struct sk_buff *skb)
++static inline bool skb_vlan_tagged_multi(struct sk_buff *skb)
+ {
+ __be16 protocol = skb->protocol;
+
+@@ -596,6 +596,9 @@ static inline bool skb_vlan_tagged_multi(const struct sk_buff *skb)
+ protocol != htons(ETH_P_8021AD)))
+ return false;
+
++ if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
++ return false;
++
+ veh = (struct vlan_ethhdr *)skb->data;
+ protocol = veh->h_vlan_encapsulated_proto;
+ }
+@@ -613,7 +616,7 @@ static inline bool skb_vlan_tagged_multi(const struct sk_buff *skb)
+ *
+ * Returns features without unsafe ones if the skb has multiple tags.
+ */
+-static inline netdev_features_t vlan_features_check(const struct sk_buff *skb,
++static inline netdev_features_t vlan_features_check(struct sk_buff *skb,
+ netdev_features_t features)
+ {
+ if (skb_vlan_tagged_multi(skb)) {
+diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
+index c367cbdf73ab..443dd702537f 100644
+--- a/include/linux/jiffies.h
++++ b/include/linux/jiffies.h
+@@ -1,6 +1,7 @@
+ #ifndef _LINUX_JIFFIES_H
+ #define _LINUX_JIFFIES_H
+
++#include <linux/cache.h>
+ #include <linux/math64.h>
+ #include <linux/kernel.h>
+ #include <linux/types.h>
+@@ -62,19 +63,17 @@ extern int register_refined_jiffies(long clock_tick_rate);
+ /* TICK_USEC is the time between ticks in usec assuming fake USER_HZ */
+ #define TICK_USEC ((1000000UL + USER_HZ/2) / USER_HZ)
+
+-/* some arch's have a small-data section that can be accessed register-relative
+- * but that can only take up to, say, 4-byte variables. jiffies being part of
+- * an 8-byte variable may not be correctly accessed unless we force the issue
+- */
+-#define __jiffy_data __attribute__((section(".data")))
++#ifndef __jiffy_arch_data
++#define __jiffy_arch_data
++#endif
+
+ /*
+ * The 64-bit value is not atomic - you MUST NOT read it
+ * without sampling the sequence number in jiffies_lock.
+ * get_jiffies_64() will do this for you as appropriate.
+ */
+-extern u64 __jiffy_data jiffies_64;
+-extern unsigned long volatile __jiffy_data jiffies;
++extern u64 __cacheline_aligned_in_smp jiffies_64;
++extern unsigned long volatile __cacheline_aligned_in_smp __jiffy_arch_data jiffies;
+
+ #if (BITS_PER_LONG < 64)
+ u64 get_jiffies_64(void);
+diff --git a/include/linux/llist.h b/include/linux/llist.h
+index fbf10a0bc095..4d86a9d273b3 100644
+--- a/include/linux/llist.h
++++ b/include/linux/llist.h
+@@ -87,6 +87,23 @@ static inline void init_llist_head(struct llist_head *list)
+ #define llist_entry(ptr, type, member) \
+ container_of(ptr, type, member)
+
++/**
++ * member_address_is_nonnull - check whether the member address is not NULL
++ * @ptr: the object pointer (struct type * that contains the llist_node)
++ * @member: the name of the llist_node within the struct.
++ *
++ * This macro is conceptually the same as
++ * &ptr->member != NULL
++ * but it works around the fact that compilers can decide that taking a member
++ * address is never a NULL pointer.
++ *
++ * Real objects that start at a high address and have a member at NULL are
++ * unlikely to exist, but such pointers may be returned e.g. by the
++ * container_of() macro.
++ */
++#define member_address_is_nonnull(ptr, member) \
++ ((uintptr_t)(ptr) + offsetof(typeof(*(ptr)), member) != 0)
++
+ /**
+ * llist_for_each - iterate over some deleted entries of a lock-less list
+ * @pos: the &struct llist_node to use as a loop cursor
+@@ -121,7 +138,7 @@ static inline void init_llist_head(struct llist_head *list)
+ */
+ #define llist_for_each_entry(pos, node, member) \
+ for ((pos) = llist_entry((node), typeof(*(pos)), member); \
+- &(pos)->member != NULL; \
++ member_address_is_nonnull(pos, member); \
+ (pos) = llist_entry((pos)->member.next, typeof(*(pos)), member))
+
+ /**
+@@ -143,7 +160,7 @@ static inline void init_llist_head(struct llist_head *list)
+ */
+ #define llist_for_each_entry_safe(pos, n, node, member) \
+ for (pos = llist_entry((node), typeof(*pos), member); \
+- &pos->member != NULL && \
++ member_address_is_nonnull(pos, member) && \
+ (n = llist_entry(pos->member.next, typeof(*n), member), true); \
+ pos = n)
+
+diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h
+index 6fed539e5456..066818f0a0ac 100644
+--- a/include/linux/mlx4/qp.h
++++ b/include/linux/mlx4/qp.h
+@@ -450,6 +450,7 @@ struct mlx4_update_qp_params {
+ u16 rate_val;
+ };
+
++struct mlx4_qp *mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn);
+ int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn,
+ enum mlx4_update_qp_attr attr,
+ struct mlx4_update_qp_params *params);
+diff --git a/include/linux/mtd/flashchip.h b/include/linux/mtd/flashchip.h
+index b63fa457febd..3529683f691e 100644
+--- a/include/linux/mtd/flashchip.h
++++ b/include/linux/mtd/flashchip.h
+@@ -85,6 +85,7 @@ struct flchip {
+ unsigned int write_suspended:1;
+ unsigned int erase_suspended:1;
+ unsigned long in_progress_block_addr;
++ unsigned long in_progress_block_mask;
+
+ struct mutex mutex;
+ wait_queue_head_t wq; /* Wait on here when we're waiting for the chip
+diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
+index cc615e273f80..b95f00cb6219 100644
+--- a/include/linux/netfilter/x_tables.h
++++ b/include/linux/netfilter/x_tables.h
+@@ -247,6 +247,8 @@ unsigned int *xt_alloc_entry_offsets(unsigned int size);
+ bool xt_find_jump_offset(const unsigned int *offsets,
+ unsigned int target, unsigned int size);
+
++int xt_check_proc_name(const char *name, unsigned int size);
++
+ int xt_check_match(struct xt_mtchk_param *, unsigned int size, u_int8_t proto,
+ bool inv_proto);
+ int xt_check_target(struct xt_tgchk_param *, unsigned int size, u_int8_t proto,
+diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
+index 30a8f531236c..2629fc3e24e0 100644
+--- a/include/linux/pagemap.h
++++ b/include/linux/pagemap.h
+@@ -146,7 +146,7 @@ static inline int page_cache_get_speculative(struct page *page)
+
+ #ifdef CONFIG_TINY_RCU
+ # ifdef CONFIG_PREEMPT_COUNT
+- VM_BUG_ON(!in_atomic());
++ VM_BUG_ON(!in_atomic() && !irqs_disabled());
+ # endif
+ /*
+ * Preempt must be disabled here - we rely on rcu_read_lock doing
+@@ -184,7 +184,7 @@ static inline int page_cache_add_speculative(struct page *page, int count)
+
+ #if !defined(CONFIG_SMP) && defined(CONFIG_TREE_RCU)
+ # ifdef CONFIG_PREEMPT_COUNT
+- VM_BUG_ON(!in_atomic());
++ VM_BUG_ON(!in_atomic() && !irqs_disabled());
+ # endif
+ VM_BUG_ON_PAGE(page_count(page) == 0, page);
+ atomic_add(count, &page->_count);
+diff --git a/include/linux/platform_data/isl9305.h b/include/linux/platform_data/isl9305.h
+index 1419133fa69e..4ac1a070af0a 100644
+--- a/include/linux/platform_data/isl9305.h
++++ b/include/linux/platform_data/isl9305.h
+@@ -24,7 +24,7 @@
+ struct regulator_init_data;
+
+ struct isl9305_pdata {
+- struct regulator_init_data *init_data[ISL9305_MAX_REGULATOR];
++ struct regulator_init_data *init_data[ISL9305_MAX_REGULATOR + 1];
+ };
+
+ #endif
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index 495ad8fbe240..30fb6495315b 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -847,10 +847,10 @@ struct sk_buff *skb_realloc_headroom(struct sk_buff *skb,
+ unsigned int headroom);
+ struct sk_buff *skb_copy_expand(const struct sk_buff *skb, int newheadroom,
+ int newtailroom, gfp_t priority);
+-int skb_to_sgvec_nomark(struct sk_buff *skb, struct scatterlist *sg,
+- int offset, int len);
+-int skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset,
+- int len);
++int __must_check skb_to_sgvec_nomark(struct sk_buff *skb, struct scatterlist *sg,
++ int offset, int len);
++int __must_check skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg,
++ int offset, int len);
+ int skb_cow_data(struct sk_buff *skb, int tailbits, struct sk_buff **trailer);
+ int skb_pad(struct sk_buff *skb, int pad);
+ #define dev_kfree_skb(a) consume_skb(a)
+diff --git a/include/linux/tty.h b/include/linux/tty.h
+index 52baf4089bd2..0d56f919bda3 100644
+--- a/include/linux/tty.h
++++ b/include/linux/tty.h
+@@ -343,6 +343,7 @@ struct tty_file_private {
+ #define TTY_PTY_LOCK 16 /* pty private */
+ #define TTY_NO_WRITE_SPLIT 17 /* Preserve write boundaries to driver */
+ #define TTY_HUPPED 18 /* Post driver->hangup() */
++#define TTY_HUPPING 19 /* Hangup in progress */
+ #define TTY_LDISC_HALTED 22 /* Line discipline is halted */
+
+ #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
+@@ -581,7 +582,7 @@ extern int tty_unregister_ldisc(int disc);
+ extern int tty_set_ldisc(struct tty_struct *tty, int ldisc);
+ extern int tty_ldisc_setup(struct tty_struct *tty, struct tty_struct *o_tty);
+ extern void tty_ldisc_release(struct tty_struct *tty);
+-extern void tty_ldisc_init(struct tty_struct *tty);
++extern int __must_check tty_ldisc_init(struct tty_struct *tty);
+ extern void tty_ldisc_deinit(struct tty_struct *tty);
+ extern void tty_ldisc_begin(void);
+
+diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
+index 4f3dfb7d0654..96a8870e38fe 100644
+--- a/include/linux/usb/gadget.h
++++ b/include/linux/usb/gadget.h
+@@ -585,9 +585,21 @@ static inline struct usb_gadget *dev_to_usb_gadget(struct device *dev)
+ list_for_each_entry(tmp, &(gadget)->ep_list, ep_list)
+
+
++/**
++ * usb_ep_align - returns @len aligned to ep's maxpacketsize.
++ * @ep: the endpoint whose maxpacketsize is used to align @len
++ * @len: buffer size's length to align to @ep's maxpacketsize
++ *
++ * This helper is used to align buffer's size to an ep's maxpacketsize.
++ */
++static inline size_t usb_ep_align(struct usb_ep *ep, size_t len)
++{
++ return round_up(len, (size_t)le16_to_cpu(ep->desc->wMaxPacketSize));
++}
++
+ /**
+ * usb_ep_align_maybe - returns @len aligned to ep's maxpacketsize if gadget
+- * requires quirk_ep_out_aligned_size, otherwise reguens len.
++ * requires quirk_ep_out_aligned_size, otherwise returns len.
+ * @g: controller to check for quirk
+ * @ep: the endpoint whose maxpacketsize is used to align @len
+ * @len: buffer size's length to align to @ep's maxpacketsize
+@@ -598,8 +610,7 @@ static inline struct usb_gadget *dev_to_usb_gadget(struct device *dev)
+ static inline size_t
+ usb_ep_align_maybe(struct usb_gadget *g, struct usb_ep *ep, size_t len)
+ {
+- return !g->quirk_ep_out_aligned_size ? len :
+- round_up(len, (size_t)ep->desc->wMaxPacketSize);
++ return g->quirk_ep_out_aligned_size ? usb_ep_align(ep, len) : len;
+ }
+
+ /**
+diff --git a/include/linux/virtio.h b/include/linux/virtio.h
+index 8f4d4bfa6d46..d7844d215381 100644
+--- a/include/linux/virtio.h
++++ b/include/linux/virtio.h
+@@ -124,6 +124,9 @@ int virtio_device_freeze(struct virtio_device *dev);
+ int virtio_device_restore(struct virtio_device *dev);
+ #endif
+
++#define virtio_device_for_each_vq(vdev, vq) \
++ list_for_each_entry(vq, &vdev->vqs, list)
++
+ /**
+ * virtio_driver - operations for a virtio I/O driver
+ * @driver: underlying device driver (populate name and owner).
+diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
+index f8d6813cd5b2..0cd8002cdddd 100644
+--- a/include/net/cfg80211.h
++++ b/include/net/cfg80211.h
+@@ -929,9 +929,9 @@ enum rate_info_flags {
+ * @RATE_INFO_BW_160: 160 MHz bandwidth
+ */
+ enum rate_info_bw {
++ RATE_INFO_BW_20 = 0,
+ RATE_INFO_BW_5,
+ RATE_INFO_BW_10,
+- RATE_INFO_BW_20,
+ RATE_INFO_BW_40,
+ RATE_INFO_BW_80,
+ RATE_INFO_BW_160,
+diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
+index 7682cb2ae237..378238f50208 100644
+--- a/include/net/inet_timewait_sock.h
++++ b/include/net/inet_timewait_sock.h
+@@ -55,6 +55,7 @@ struct inet_timewait_sock {
+ #define tw_family __tw_common.skc_family
+ #define tw_state __tw_common.skc_state
+ #define tw_reuse __tw_common.skc_reuse
++#define tw_reuseport __tw_common.skc_reuseport
+ #define tw_ipv6only __tw_common.skc_ipv6only
+ #define tw_bound_dev_if __tw_common.skc_bound_dev_if
+ #define tw_node __tw_common.skc_nulls_node
+diff --git a/include/net/nexthop.h b/include/net/nexthop.h
+index 3334dbfa5aa4..7fc78663ec9d 100644
+--- a/include/net/nexthop.h
++++ b/include/net/nexthop.h
+@@ -6,7 +6,7 @@
+
+ static inline int rtnh_ok(const struct rtnexthop *rtnh, int remaining)
+ {
+- return remaining >= sizeof(*rtnh) &&
++ return remaining >= (int)sizeof(*rtnh) &&
+ rtnh->rtnh_len >= sizeof(*rtnh) &&
+ rtnh->rtnh_len <= remaining;
+ }
+diff --git a/include/net/slhc_vj.h b/include/net/slhc_vj.h
+index 8716d5942b65..8fcf8908a694 100644
+--- a/include/net/slhc_vj.h
++++ b/include/net/slhc_vj.h
+@@ -127,6 +127,7 @@ typedef __u32 int32;
+ */
+ struct cstate {
+ byte_t cs_this; /* connection id number (xmit) */
++ bool initialized; /* true if initialized */
+ struct cstate *next; /* next in ring (xmit) */
+ struct iphdr cs_ip; /* ip/tcp hdr from most recent packet */
+ struct tcphdr cs_tcp;
+diff --git a/include/net/tcp.h b/include/net/tcp.h
+index 966d229d4482..dc542603d0f1 100644
+--- a/include/net/tcp.h
++++ b/include/net/tcp.h
+@@ -1123,9 +1123,11 @@ void tcp_select_initial_window(int __space, __u32 mss, __u32 *rcv_wnd,
+
+ static inline int tcp_win_from_space(int space)
+ {
+- return sysctl_tcp_adv_win_scale<=0 ?
+- (space>>(-sysctl_tcp_adv_win_scale)) :
+- space - (space>>sysctl_tcp_adv_win_scale);
++ int tcp_adv_win_scale = sysctl_tcp_adv_win_scale;
++
++ return tcp_adv_win_scale <= 0 ?
++ (space>>(-tcp_adv_win_scale)) :
++ space - (space>>tcp_adv_win_scale);
+ }
+
+ /* Note: caller must be prepared to deal with negative returns */
+diff --git a/include/net/x25.h b/include/net/x25.h
+index c383aa4edbf0..6d30a01d281d 100644
+--- a/include/net/x25.h
++++ b/include/net/x25.h
+@@ -298,10 +298,10 @@ void x25_check_rbuf(struct sock *);
+
+ /* sysctl_net_x25.c */
+ #ifdef CONFIG_SYSCTL
+-void x25_register_sysctl(void);
++int x25_register_sysctl(void);
+ void x25_unregister_sysctl(void);
+ #else
+-static inline void x25_register_sysctl(void) {};
++static inline int x25_register_sysctl(void) { return 0; };
+ static inline void x25_unregister_sysctl(void) {};
+ #endif /* CONFIG_SYSCTL */
+
+diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
+index e6796dc8c764..561b0ca8cb19 100644
+--- a/include/rdma/ib_addr.h
++++ b/include/rdma/ib_addr.h
+@@ -109,6 +109,8 @@ int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
+ const unsigned char *dst_dev_addr);
+
+ int rdma_addr_size(struct sockaddr *addr);
++int rdma_addr_size_in6(struct sockaddr_in6 *addr);
++int rdma_addr_size_kss(struct __kernel_sockaddr_storage *addr);
+
+ int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id);
+ int rdma_addr_find_dmac_by_grh(union ib_gid *sgid, union ib_gid *dgid, u8 *smac,
+diff --git a/include/sound/control.h b/include/sound/control.h
+index 95aad6d3fd1a..8e752793b94a 100644
+--- a/include/sound/control.h
++++ b/include/sound/control.h
+@@ -22,6 +22,7 @@
+ *
+ */
+
++#include <linux/nospec.h>
+ #include <sound/asound.h>
+
+ #define snd_kcontrol_chip(kcontrol) ((kcontrol)->private_data)
+@@ -147,12 +148,14 @@ int snd_ctl_get_preferred_subdevice(struct snd_card *card, int type);
+
+ static inline unsigned int snd_ctl_get_ioffnum(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
+ {
+- return id->numid - kctl->id.numid;
++ unsigned int ioff = id->numid - kctl->id.numid;
++ return array_index_nospec(ioff, kctl->count);
+ }
+
+ static inline unsigned int snd_ctl_get_ioffidx(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
+ {
+- return id->index - kctl->id.index;
++ unsigned int ioff = id->index - kctl->id.index;
++ return array_index_nospec(ioff, kctl->count);
+ }
+
+ static inline unsigned int snd_ctl_get_ioff(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
+diff --git a/include/sound/pcm_oss.h b/include/sound/pcm_oss.h
+index 760c969d885d..12bbf8c81112 100644
+--- a/include/sound/pcm_oss.h
++++ b/include/sound/pcm_oss.h
+@@ -57,6 +57,7 @@ struct snd_pcm_oss_runtime {
+ char *buffer; /* vmallocated period */
+ size_t buffer_used; /* used length from period buffer */
+ struct mutex params_lock;
++ atomic_t rw_ref; /* concurrent read/write accesses */
+ #ifdef CONFIG_SND_PCM_OSS_PLUGINS
+ struct snd_pcm_plugin *plugin_first;
+ struct snd_pcm_plugin *plugin_last;
+diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
+index 413417f3707b..7aa8cbc23b28 100644
+--- a/include/uapi/linux/pci_regs.h
++++ b/include/uapi/linux/pci_regs.h
+@@ -106,7 +106,7 @@
+ #define PCI_SUBSYSTEM_ID 0x2e
+ #define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */
+ #define PCI_ROM_ADDRESS_ENABLE 0x01
+-#define PCI_ROM_ADDRESS_MASK (~0x7ffUL)
++#define PCI_ROM_ADDRESS_MASK (~0x7ffU)
+
+ #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
+
+diff --git a/include/uapi/linux/usb/audio.h b/include/uapi/linux/usb/audio.h
+index d2314be4f0c0..19f9dc2c06f6 100644
+--- a/include/uapi/linux/usb/audio.h
++++ b/include/uapi/linux/usb/audio.h
+@@ -369,7 +369,7 @@ static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_d
+ {
+ return (protocol == UAC_VERSION_1) ?
+ desc->baSourceID[desc->bNrInPins + 4] :
+- desc->baSourceID[desc->bNrInPins + 6];
++ 2; /* in UAC2, this value is constant */
+ }
+
+ static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc,
+@@ -377,7 +377,7 @@ static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_de
+ {
+ return (protocol == UAC_VERSION_1) ?
+ &desc->baSourceID[desc->bNrInPins + 5] :
+- &desc->baSourceID[desc->bNrInPins + 7];
++ &desc->baSourceID[desc->bNrInPins + 6];
+ }
+
+ static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc,
+diff --git a/ipc/shm.c b/ipc/shm.c
+index c2384d0e4fa6..aa3090ddc9eb 100644
+--- a/ipc/shm.c
++++ b/ipc/shm.c
+@@ -198,6 +198,12 @@ static int __shm_open(struct vm_area_struct *vma)
+ if (IS_ERR(shp))
+ return PTR_ERR(shp);
+
++ if (shp->shm_file != sfd->file) {
++ /* ID was reused */
++ shm_unlock(shp);
++ return -EINVAL;
++ }
++
+ shp->shm_atim = get_seconds();
+ shp->shm_lprid = task_tgid_vnr(current);
+ shp->shm_nattch++;
+@@ -414,8 +420,9 @@ static int shm_mmap(struct file *file, struct vm_area_struct *vma)
+ int ret;
+
+ /*
+- * In case of remap_file_pages() emulation, the file can represent
+- * removed IPC ID: propogate shm_lock() error to caller.
++ * In case of remap_file_pages() emulation, the file can represent an
++ * IPC ID that was removed, and possibly even reused by another shm
++ * segment already. Propagate this case as an error to caller.
+ */
+ ret =__shm_open(vma);
+ if (ret)
+@@ -439,6 +446,7 @@ static int shm_release(struct inode *ino, struct file *file)
+ struct shm_file_data *sfd = shm_file_data(file);
+
+ put_ipc_ns(sfd->ns);
++ fput(sfd->file);
+ shm_file_data(file) = NULL;
+ kfree(sfd);
+ return 0;
+@@ -1198,7 +1206,16 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg,
+ file->f_mapping = shp->shm_file->f_mapping;
+ sfd->id = shp->shm_perm.id;
+ sfd->ns = get_ipc_ns(ns);
+- sfd->file = shp->shm_file;
++ /*
++ * We need to take a reference to the real shm file to prevent the
++ * pointer from becoming stale in cases where the lifetime of the outer
++ * file extends beyond that of the shm segment. It's not usually
++ * possible, but it can happen during remap_file_pages() emulation as
++ * that unmaps the memory, then does ->mmap() via file reference only.
++ * We'll deny the ->mmap() if the shm segment was since removed, but to
++ * detect shm ID reuse we need to compare the file pointers.
++ */
++ sfd->file = get_file(shp->shm_file);
+ sfd->vm_ops = NULL;
+
+ err = security_mmap_file(file, prot, flags);
+diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
+index 1c1b8ab34037..6c1783bff424 100644
+--- a/kernel/bpf/arraymap.c
++++ b/kernel/bpf/arraymap.c
+@@ -75,7 +75,7 @@ static void *array_map_lookup_elem(struct bpf_map *map, void *key)
+ static int array_map_get_next_key(struct bpf_map *map, void *key, void *next_key)
+ {
+ struct bpf_array *array = container_of(map, struct bpf_array, map);
+- u32 index = *(u32 *)key;
++ u32 index = key ? *(u32 *)key : U32_MAX;
+ u32 *next = (u32 *)next_key;
+
+ if (index >= array->map.max_entries) {
+diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c
+index 83c209d9b17a..ef7173e82179 100644
+--- a/kernel/bpf/hashtab.c
++++ b/kernel/bpf/hashtab.c
+@@ -149,12 +149,15 @@ static int htab_map_get_next_key(struct bpf_map *map, void *key, void *next_key)
+ struct hlist_head *head;
+ struct htab_elem *l, *next_l;
+ u32 hash, key_size;
+- int i;
++ int i = 0;
+
+ WARN_ON_ONCE(!rcu_read_lock_held());
+
+ key_size = map->key_size;
+
++ if (!key)
++ goto find_first_elem;
++
+ hash = htab_map_hash(key, key_size);
+
+ head = select_bucket(htab, hash);
+@@ -162,10 +165,8 @@ static int htab_map_get_next_key(struct bpf_map *map, void *key, void *next_key)
+ /* lookup the key */
+ l = lookup_elem_raw(head, hash, key, key_size);
+
+- if (!l) {
+- i = 0;
++ if (!l)
+ goto find_first_elem;
+- }
+
+ /* key was found, get next key in the same bucket */
+ next_l = hlist_entry_safe(rcu_dereference_raw(hlist_next_rcu(&l->hash_node)),
+diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
+index 3bae6c591914..0fcb43cb2006 100644
+--- a/kernel/bpf/syscall.c
++++ b/kernel/bpf/syscall.c
+@@ -311,14 +311,18 @@ static int map_get_next_key(union bpf_attr *attr)
+ if (IS_ERR(map))
+ return PTR_ERR(map);
+
+- err = -ENOMEM;
+- key = kmalloc(map->key_size, GFP_USER);
+- if (!key)
+- goto err_put;
+-
+- err = -EFAULT;
+- if (copy_from_user(key, ukey, map->key_size) != 0)
+- goto free_key;
++ if (ukey) {
++ err = -ENOMEM;
++ key = kmalloc(map->key_size, GFP_USER);
++ if (!key)
++ goto err_put;
++
++ err = -EFAULT;
++ if (copy_from_user(key, ukey, map->key_size) != 0)
++ goto free_key;
++ } else {
++ key = NULL;
++ }
+
+ err = -ENOMEM;
+ next_key = kmalloc(map->key_size, GFP_USER);
+diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
+index d659487254d5..d37acf86037a 100644
+--- a/kernel/events/callchain.c
++++ b/kernel/events/callchain.c
+@@ -107,14 +107,8 @@ int get_callchain_buffers(void)
+ goto exit;
+ }
+
+- if (count > 1) {
+- /* If the allocation failed, give up */
+- if (!callchain_cpus_entries)
+- err = -ENOMEM;
+- goto exit;
+- }
+-
+- err = alloc_callchain_buffers();
++ if (count == 1)
++ err = alloc_callchain_buffers();
+ exit:
+ if (err)
+ atomic_dec(&nr_callchain_events);
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index e5553bdaf6c2..c6e653201737 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -5107,9 +5107,6 @@ static void perf_output_read_one(struct perf_output_handle *handle,
+ __output_copy(handle, values, n * sizeof(u64));
+ }
+
+-/*
+- * XXX PERF_FORMAT_GROUP vs inherited events seems difficult.
+- */
+ static void perf_output_read_group(struct perf_output_handle *handle,
+ struct perf_event *event,
+ u64 enabled, u64 running)
+@@ -5154,6 +5151,13 @@ static void perf_output_read_group(struct perf_output_handle *handle,
+ #define PERF_FORMAT_TOTAL_TIMES (PERF_FORMAT_TOTAL_TIME_ENABLED|\
+ PERF_FORMAT_TOTAL_TIME_RUNNING)
+
++/*
++ * XXX PERF_SAMPLE_READ vs inherited events seems difficult.
++ *
++ * The problem is that its both hard and excessively expensive to iterate the
++ * child list, not to mention that its impossible to IPI the children running
++ * on another CPU, from interrupt/NMI context.
++ */
+ static void perf_output_read(struct perf_output_handle *handle,
+ struct perf_event *event)
+ {
+@@ -7630,9 +7634,10 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu,
+ local64_set(&hwc->period_left, hwc->sample_period);
+
+ /*
+- * we currently do not support PERF_FORMAT_GROUP on inherited events
++ * We currently do not support PERF_SAMPLE_READ on inherited events.
++ * See perf_output_read().
+ */
+- if (attr->inherit && (attr->read_format & PERF_FORMAT_GROUP))
++ if (attr->inherit && (attr->sample_type & PERF_SAMPLE_READ))
+ goto err_ns;
+
+ if (!has_branch_stack(event))
+@@ -7800,9 +7805,9 @@ static int perf_copy_attr(struct perf_event_attr __user *uattr,
+ * __u16 sample size limit.
+ */
+ if (attr->sample_stack_user >= USHRT_MAX)
+- ret = -EINVAL;
++ return -EINVAL;
+ else if (!IS_ALIGNED(attr->sample_stack_user, sizeof(u64)))
+- ret = -EINVAL;
++ return -EINVAL;
+ }
+
+ if (attr->sample_type & PERF_SAMPLE_REGS_INTR)
+diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
+index 92ce5f4ccc26..a27245fdcd81 100644
+--- a/kernel/events/hw_breakpoint.c
++++ b/kernel/events/hw_breakpoint.c
+@@ -427,16 +427,9 @@ EXPORT_SYMBOL_GPL(register_user_hw_breakpoint);
+ * modify_user_hw_breakpoint - modify a user-space hardware breakpoint
+ * @bp: the breakpoint structure to modify
+ * @attr: new breakpoint attributes
+- * @triggered: callback to trigger when we hit the breakpoint
+- * @tsk: pointer to 'task_struct' of the process to which the address belongs
+ */
+ int modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr)
+ {
+- u64 old_addr = bp->attr.bp_addr;
+- u64 old_len = bp->attr.bp_len;
+- int old_type = bp->attr.bp_type;
+- int err = 0;
+-
+ /*
+ * modify_user_hw_breakpoint can be invoked with IRQs disabled and hence it
+ * will not be possible to raise IPIs that invoke __perf_event_disable.
+@@ -451,27 +444,18 @@ int modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *att
+ bp->attr.bp_addr = attr->bp_addr;
+ bp->attr.bp_type = attr->bp_type;
+ bp->attr.bp_len = attr->bp_len;
++ bp->attr.disabled = 1;
+
+- if (attr->disabled)
+- goto end;
+-
+- err = validate_hw_breakpoint(bp);
+- if (!err)
+- perf_event_enable(bp);
++ if (!attr->disabled) {
++ int err = validate_hw_breakpoint(bp);
+
+- if (err) {
+- bp->attr.bp_addr = old_addr;
+- bp->attr.bp_type = old_type;
+- bp->attr.bp_len = old_len;
+- if (!bp->attr.disabled)
+- perf_event_enable(bp);
++ if (err)
++ return err;
+
+- return err;
++ perf_event_enable(bp);
++ bp->attr.disabled = 0;
+ }
+
+-end:
+- bp->attr.disabled = attr->disabled;
+-
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(modify_user_hw_breakpoint);
+diff --git a/kernel/futex.c b/kernel/futex.c
+index 4195616b27d9..8944e397cd47 100644
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -400,6 +400,7 @@ get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, int rw)
+ unsigned long address = (unsigned long)uaddr;
+ struct mm_struct *mm = current->mm;
+ struct page *page, *page_head;
++ struct address_space *mapping;
+ int err, ro = 0;
+
+ /*
+@@ -478,7 +479,19 @@ again:
+ }
+ #endif
+
+- lock_page(page_head);
++ /*
++ * The treatment of mapping from this point on is critical. The page
++ * lock protects many things but in this context the page lock
++ * stabilizes mapping, prevents inode freeing in the shared
++ * file-backed region case and guards against movement to swap cache.
++ *
++ * Strictly speaking the page lock is not needed in all cases being
++ * considered here and page lock forces unnecessarily serialization
++ * From this point on, mapping will be re-verified if necessary and
++ * page lock will be acquired only if it is unavoidable
++ */
++
++ mapping = READ_ONCE(page_head->mapping);
+
+ /*
+ * If page_head->mapping is NULL, then it cannot be a PageAnon
+@@ -495,18 +508,31 @@ again:
+ * shmem_writepage move it from filecache to swapcache beneath us:
+ * an unlikely race, but we do need to retry for page_head->mapping.
+ */
+- if (!page_head->mapping) {
+- int shmem_swizzled = PageSwapCache(page_head);
++ if (unlikely(!mapping)) {
++ int shmem_swizzled;
++
++ /*
++ * Page lock is required to identify which special case above
++ * applies. If this is really a shmem page then the page lock
++ * will prevent unexpected transitions.
++ */
++ lock_page(page);
++ shmem_swizzled = PageSwapCache(page) || page->mapping;
+ unlock_page(page_head);
+ put_page(page_head);
++
+ if (shmem_swizzled)
+ goto again;
++
+ return -EFAULT;
+ }
+
+ /*
+ * Private mappings are handled in a simple way.
+ *
++ * If the futex key is stored on an anonymous page, then the associated
++ * object is the mm which is implicitly pinned by the calling process.
++ *
+ * NOTE: When userspace waits on a MAP_SHARED mapping, even if
+ * it's a read-only handle, it's expected that futexes attach to
+ * the object not the particular process.
+@@ -524,16 +550,74 @@ again:
+ key->both.offset |= FUT_OFF_MMSHARED; /* ref taken on mm */
+ key->private.mm = mm;
+ key->private.address = address;
++
++ get_futex_key_refs(key); /* implies smp_mb(); (B) */
++
+ } else {
++ struct inode *inode;
++
++ /*
++ * The associated futex object in this case is the inode and
++ * the page->mapping must be traversed. Ordinarily this should
++ * be stabilised under page lock but it's not strictly
++ * necessary in this case as we just want to pin the inode, not
++ * update the radix tree or anything like that.
++ *
++ * The RCU read lock is taken as the inode is finally freed
++ * under RCU. If the mapping still matches expectations then the
++ * mapping->host can be safely accessed as being a valid inode.
++ */
++ rcu_read_lock();
++
++ if (READ_ONCE(page_head->mapping) != mapping) {
++ rcu_read_unlock();
++ put_page(page_head);
++
++ goto again;
++ }
++
++ inode = READ_ONCE(mapping->host);
++ if (!inode) {
++ rcu_read_unlock();
++ put_page(page_head);
++
++ goto again;
++ }
++
++ /*
++ * Take a reference unless it is about to be freed. Previously
++ * this reference was taken by ihold under the page lock
++ * pinning the inode in place so i_lock was unnecessary. The
++ * only way for this check to fail is if the inode was
++ * truncated in parallel so warn for now if this happens.
++ *
++ * We are not calling into get_futex_key_refs() in file-backed
++ * cases, therefore a successful atomic_inc return below will
++ * guarantee that get_futex_key() will still imply smp_mb(); (B).
++ */
++ if (WARN_ON_ONCE(!atomic_inc_not_zero(&inode->i_count))) {
++ rcu_read_unlock();
++ put_page(page_head);
++
++ goto again;
++ }
++
++ /* Should be impossible but lets be paranoid for now */
++ if (WARN_ON_ONCE(inode->i_mapping != mapping)) {
++ err = -EFAULT;
++ rcu_read_unlock();
++ iput(inode);
++
++ goto out;
++ }
++
+ key->both.offset |= FUT_OFF_INODE; /* inode-based key */
+- key->shared.inode = page_head->mapping->host;
++ key->shared.inode = inode;
+ key->shared.pgoff = basepage_index(page);
++ rcu_read_unlock();
+ }
+
+- get_futex_key_refs(key); /* implies MB (B) */
+-
+ out:
+- unlock_page(page_head);
+ put_page(page_head);
+ return err;
+ }
+diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
+index f4b1f0a1dba5..76c9d6f62458 100644
+--- a/kernel/irq/manage.c
++++ b/kernel/irq/manage.c
+@@ -1095,8 +1095,10 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
+ * set the trigger type must match. Also all must
+ * agree on ONESHOT.
+ */
++ unsigned int oldtype = irqd_get_trigger_type(&desc->irq_data);
++
+ if (!((old->flags & new->flags) & IRQF_SHARED) ||
+- ((old->flags ^ new->flags) & IRQF_TRIGGER_MASK) ||
++ (oldtype != (new->flags & IRQF_TRIGGER_MASK)) ||
+ ((old->flags ^ new->flags) & IRQF_ONESHOT))
+ goto mismatch;
+
+diff --git a/kernel/kprobes.c b/kernel/kprobes.c
+index 7dd73a3059b8..04486d8e5809 100644
+--- a/kernel/kprobes.c
++++ b/kernel/kprobes.c
+@@ -125,7 +125,7 @@ static void *alloc_insn_page(void)
+ return module_alloc(PAGE_SIZE);
+ }
+
+-static void free_insn_page(void *page)
++void __weak free_insn_page(void *page)
+ {
+ module_memfree(page);
+ }
+diff --git a/kernel/pid.c b/kernel/pid.c
+index 4fd07d5b7baf..365281244acc 100644
+--- a/kernel/pid.c
++++ b/kernel/pid.c
+@@ -322,8 +322,10 @@ struct pid *alloc_pid(struct pid_namespace *ns)
+ }
+
+ if (unlikely(is_child_reaper(pid))) {
+- if (pid_ns_prepare_proc(ns))
++ if (pid_ns_prepare_proc(ns)) {
++ disable_pid_allocation(ns);
+ goto out_free;
++ }
+ }
+
+ get_pid_ns(ns);
+diff --git a/kernel/printk/braille.c b/kernel/printk/braille.c
+index 276762f3a460..e035876af5e2 100644
+--- a/kernel/printk/braille.c
++++ b/kernel/printk/braille.c
+@@ -2,12 +2,13 @@
+
+ #include <linux/kernel.h>
+ #include <linux/console.h>
++#include <linux/errno.h>
+ #include <linux/string.h>
+
+ #include "console_cmdline.h"
+ #include "braille.h"
+
+-char *_braille_console_setup(char **str, char **brl_options)
++int _braille_console_setup(char **str, char **brl_options)
+ {
+ if (!memcmp(*str, "brl,", 4)) {
+ *brl_options = "";
+@@ -15,14 +16,14 @@ char *_braille_console_setup(char **str, char **brl_options)
+ } else if (!memcmp(str, "brl=", 4)) {
+ *brl_options = *str + 4;
+ *str = strchr(*brl_options, ',');
+- if (!*str)
++ if (!*str) {
+ pr_err("need port name after brl=\n");
+- else
+- *((*str)++) = 0;
+- } else
+- return NULL;
++ return -EINVAL;
++ }
++ *((*str)++) = 0;
++ }
+
+- return *str;
++ return 0;
+ }
+
+ int
+diff --git a/kernel/printk/braille.h b/kernel/printk/braille.h
+index 769d771145c8..749a6756843a 100644
+--- a/kernel/printk/braille.h
++++ b/kernel/printk/braille.h
+@@ -9,7 +9,14 @@ braille_set_options(struct console_cmdline *c, char *brl_options)
+ c->brl_options = brl_options;
+ }
+
+-char *
++/*
++ * Setup console according to braille options.
++ * Return -EINVAL on syntax error, 0 on success (or no braille option was
++ * actually given).
++ * Modifies str to point to the serial options
++ * Sets brl_options to the parsed braille options.
++ */
++int
+ _braille_console_setup(char **str, char **brl_options);
+
+ int
+@@ -25,10 +32,10 @@ braille_set_options(struct console_cmdline *c, char *brl_options)
+ {
+ }
+
+-static inline char *
++static inline int
+ _braille_console_setup(char **str, char **brl_options)
+ {
+- return NULL;
++ return 0;
+ }
+
+ static inline int
+diff --git a/kernel/resource.c b/kernel/resource.c
+index cbf725c24c3b..39ee5aeaf1e3 100644
+--- a/kernel/resource.c
++++ b/kernel/resource.c
+@@ -600,7 +600,8 @@ static int __find_resource(struct resource *root, struct resource *old,
+ alloc.start = constraint->alignf(constraint->alignf_data, &avail,
+ size, constraint->align);
+ alloc.end = alloc.start + size - 1;
+- if (resource_contains(&avail, &alloc)) {
++ if (alloc.start <= alloc.end &&
++ resource_contains(&avail, &alloc)) {
+ new->start = alloc.start;
+ new->end = alloc.end;
+ return 0;
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 9c905bd94ff0..5e7608c5b9ec 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -578,7 +578,8 @@ void resched_cpu(int cpu)
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&rq->lock, flags);
+- resched_curr(rq);
++ if (cpu_online(cpu) || cpu == smp_processor_id())
++ resched_curr(rq);
+ raw_spin_unlock_irqrestore(&rq->lock, flags);
+ }
+
+diff --git a/kernel/time/sched_clock.c b/kernel/time/sched_clock.c
+index a26036d37a38..382b159d8592 100644
+--- a/kernel/time/sched_clock.c
++++ b/kernel/time/sched_clock.c
+@@ -205,6 +205,11 @@ sched_clock_register(u64 (*read)(void), int bits, unsigned long rate)
+
+ update_clock_read_data(&rd);
+
++ if (sched_clock_timer.function != NULL) {
++ /* update timeout for clock wrap */
++ hrtimer_start(&sched_clock_timer, cd.wrap_kt, HRTIMER_MODE_REL);
++ }
++
+ r = rate;
+ if (r >= 4000000) {
+ r /= 1000000;
+diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
+index e878c2e0ba45..e81d45097d05 100644
+--- a/kernel/time/timer_list.c
++++ b/kernel/time/timer_list.c
+@@ -16,6 +16,7 @@
+ #include <linux/sched.h>
+ #include <linux/seq_file.h>
+ #include <linux/kallsyms.h>
++#include <linux/nmi.h>
+
+ #include <asm/uaccess.h>
+
+@@ -91,6 +92,9 @@ print_active_timers(struct seq_file *m, struct hrtimer_clock_base *base,
+
+ next_one:
+ i = 0;
++
++ touch_nmi_watchdog();
++
+ raw_spin_lock_irqsave(&base->cpu_base->lock, flags);
+
+ curr = timerqueue_getnext(&base->active);
+@@ -202,6 +206,8 @@ print_tickdevice(struct seq_file *m, struct tick_device *td, int cpu)
+ {
+ struct clock_event_device *dev = td->evtdev;
+
++ touch_nmi_watchdog();
++
+ SEQ_printf(m, "Tick Device: mode: %d\n", td->mode);
+ if (cpu < 0)
+ SEQ_printf(m, "Broadcast device\n");
+diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
+index 9a4aee1d3345..2bdb78ab3bd2 100644
+--- a/kernel/trace/trace_kprobe.c
++++ b/kernel/trace/trace_kprobe.c
+@@ -611,7 +611,7 @@ static int create_trace_kprobe(int argc, char **argv)
+ bool is_return = false, is_delete = false;
+ char *symbol = NULL, *event = NULL, *group = NULL;
+ char *arg;
+- unsigned long offset = 0;
++ long offset = 0;
+ void *addr = NULL;
+ char buf[MAX_EVENT_NAME_LEN];
+
+@@ -679,7 +679,7 @@ static int create_trace_kprobe(int argc, char **argv)
+ symbol = argv[1];
+ /* TODO: support .init module functions */
+ ret = traceprobe_split_symbol_offset(symbol, &offset);
+- if (ret) {
++ if (ret || offset < 0 || offset > UINT_MAX) {
+ pr_info("Failed to parse either an address or a symbol.\n");
+ return ret;
+ }
+diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
+index 1769a81da8a7..741c00b90fdc 100644
+--- a/kernel/trace/trace_probe.c
++++ b/kernel/trace/trace_probe.c
+@@ -293,7 +293,7 @@ static fetch_func_t get_fetch_size_function(const struct fetch_type *type,
+ }
+
+ /* Split symbol and offset. */
+-int traceprobe_split_symbol_offset(char *symbol, unsigned long *offset)
++int traceprobe_split_symbol_offset(char *symbol, long *offset)
+ {
+ char *tmp;
+ int ret;
+@@ -301,13 +301,11 @@ int traceprobe_split_symbol_offset(char *symbol, unsigned long *offset)
+ if (!offset)
+ return -EINVAL;
+
+- tmp = strchr(symbol, '+');
++ tmp = strpbrk(symbol, "+-");
+ if (tmp) {
+- /* skip sign because kstrtoul doesn't accept '+' */
+- ret = kstrtoul(tmp + 1, 0, offset);
++ ret = kstrtol(tmp, 0, offset);
+ if (ret)
+ return ret;
+-
+ *tmp = '\0';
+ } else
+ *offset = 0;
+diff --git a/kernel/trace/trace_probe.h b/kernel/trace/trace_probe.h
+index ab283e146b70..80c4ff36896c 100644
+--- a/kernel/trace/trace_probe.h
++++ b/kernel/trace/trace_probe.h
+@@ -335,7 +335,7 @@ extern int traceprobe_conflict_field_name(const char *name,
+ extern void traceprobe_update_arg(struct probe_arg *arg);
+ extern void traceprobe_free_probe_arg(struct probe_arg *arg);
+
+-extern int traceprobe_split_symbol_offset(char *symbol, unsigned long *offset);
++extern int traceprobe_split_symbol_offset(char *symbol, long *offset);
+
+ extern ssize_t traceprobe_probes_write(struct file *file,
+ const char __user *buffer, size_t count, loff_t *ppos,
+diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
+index 6dd022c7b5bc..1b11c3c21a29 100644
+--- a/kernel/trace/trace_uprobe.c
++++ b/kernel/trace/trace_uprobe.c
+@@ -149,6 +149,8 @@ static void FETCH_FUNC_NAME(memory, string)(struct pt_regs *regs,
+ return;
+
+ ret = strncpy_from_user(dst, src, maxlen);
++ if (ret == maxlen)
++ dst[--ret] = '\0';
+
+ if (ret < 0) { /* Failed to fetch string */
+ ((u8 *)get_rloc_data(dest))[0] = '\0';
+diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
+index 3490407dc7b7..4b12034e15b0 100644
+--- a/kernel/tracepoint.c
++++ b/kernel/tracepoint.c
+@@ -185,7 +185,7 @@ static int tracepoint_add_func(struct tracepoint *tp,
+ lockdep_is_held(&tracepoints_mutex));
+ old = func_add(&tp_funcs, func);
+ if (IS_ERR(old)) {
+- WARN_ON_ONCE(1);
++ WARN_ON_ONCE(PTR_ERR(old) != -ENOMEM);
+ return PTR_ERR(old);
+ }
+
+@@ -218,7 +218,7 @@ static int tracepoint_remove_func(struct tracepoint *tp,
+ lockdep_is_held(&tracepoints_mutex));
+ old = func_remove(&tp_funcs, func);
+ if (IS_ERR(old)) {
+- WARN_ON_ONCE(1);
++ WARN_ON_ONCE(PTR_ERR(old) != -ENOMEM);
+ return PTR_ERR(old);
+ }
+
+diff --git a/lib/kobject.c b/lib/kobject.c
+index 3b841b97fccd..bb89e879d3a4 100644
+--- a/lib/kobject.c
++++ b/lib/kobject.c
+@@ -234,14 +234,12 @@ static int kobject_add_internal(struct kobject *kobj)
+
+ /* be noisy on error issues */
+ if (error == -EEXIST)
+- WARN(1, "%s failed for %s with "
+- "-EEXIST, don't try to register things with "
+- "the same name in the same directory.\n",
+- __func__, kobject_name(kobj));
++ pr_err("%s failed for %s with -EEXIST, don't try to register things with the same name in the same directory.\n",
++ __func__, kobject_name(kobj));
+ else
+- WARN(1, "%s failed for %s (error: %d parent: %s)\n",
+- __func__, kobject_name(kobj), error,
+- parent ? kobject_name(parent) : "'none'");
++ pr_err("%s failed for %s (error: %d parent: %s)\n",
++ __func__, kobject_name(kobj), error,
++ parent ? kobject_name(parent) : "'none'");
+ } else
+ kobj->state_in_sysfs = 1;
+
+diff --git a/mm/percpu.c b/mm/percpu.c
+index a40d5e04a3d1..1b95b9fdd616 100644
+--- a/mm/percpu.c
++++ b/mm/percpu.c
+@@ -68,6 +68,7 @@
+ #include <linux/vmalloc.h>
+ #include <linux/workqueue.h>
+ #include <linux/kmemleak.h>
++#include <linux/sched.h>
+
+ #include <asm/cacheflush.h>
+ #include <asm/sections.h>
+diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
+index 93010f34c200..00fabb3424df 100644
+--- a/net/8021q/vlan_dev.c
++++ b/net/8021q/vlan_dev.c
+@@ -29,6 +29,7 @@
+ #include <linux/net_tstamp.h>
+ #include <linux/etherdevice.h>
+ #include <linux/ethtool.h>
++#include <linux/phy.h>
+ #include <net/arp.h>
+
+ #include "vlan.h"
+@@ -559,8 +560,7 @@ static int vlan_dev_init(struct net_device *dev)
+ NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM |
+ NETIF_F_ALL_FCOE;
+
+- dev->features |= real_dev->vlan_features | NETIF_F_LLTX |
+- NETIF_F_GSO_SOFTWARE;
++ dev->features |= dev->hw_features | NETIF_F_LLTX;
+ dev->gso_max_size = real_dev->gso_max_size;
+ if (dev->features & NETIF_F_VLAN_FEATURES)
+ netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
+@@ -655,8 +655,11 @@ static int vlan_ethtool_get_ts_info(struct net_device *dev,
+ {
+ const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+ const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops;
++ struct phy_device *phydev = vlan->real_dev->phydev;
+
+- if (ops->get_ts_info) {
++ if (phydev && phydev->drv && phydev->drv->ts_info) {
++ return phydev->drv->ts_info(phydev, info);
++ } else if (ops->get_ts_info) {
+ return ops->get_ts_info(vlan->real_dev, info);
+ } else {
+ info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
+diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
+index bd3357e69c5c..1732fe952089 100644
+--- a/net/batman-adv/bridge_loop_avoidance.c
++++ b/net/batman-adv/bridge_loop_avoidance.c
+@@ -1589,10 +1589,22 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ /* if yes, the client has roamed and we have
+ * to unclaim it.
+ */
+- batadv_handle_unclaim(bat_priv, primary_if,
+- primary_if->net_dev->dev_addr,
+- ethhdr->h_source, vid);
+- goto allow;
++ if (batadv_has_timed_out(claim->lasttime, 100)) {
++ /* only unclaim if the last claim entry is
++ * older than 100 ms to make sure we really
++ * have a roaming client here.
++ */
++ batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_tx(): Roaming client %pM detected. Unclaim it.\n",
++ ethhdr->h_source);
++ batadv_handle_unclaim(bat_priv, primary_if,
++ primary_if->net_dev->dev_addr,
++ ethhdr->h_source, vid);
++ goto allow;
++ } else {
++ batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_tx(): Race for claim %pM detected. Drop packet.\n",
++ ethhdr->h_source);
++ goto handled;
++ }
+ }
+
+ /* check if it is a multicast/broadcast frame */
+diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
+index c4802f3bd4c5..e0d20501df76 100644
+--- a/net/bluetooth/hci_core.c
++++ b/net/bluetooth/hci_core.c
+@@ -663,6 +663,7 @@ static void hci_set_event_mask_page_2(struct hci_request *req)
+ {
+ struct hci_dev *hdev = req->hdev;
+ u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
++ bool changed = false;
+
+ /* If Connectionless Slave Broadcast master role is supported
+ * enable all necessary events for it.
+@@ -672,6 +673,7 @@ static void hci_set_event_mask_page_2(struct hci_request *req)
+ events[1] |= 0x80; /* Synchronization Train Complete */
+ events[2] |= 0x10; /* Slave Page Response Timeout */
+ events[2] |= 0x20; /* CSB Channel Map Change */
++ changed = true;
+ }
+
+ /* If Connectionless Slave Broadcast slave role is supported
+@@ -682,13 +684,24 @@ static void hci_set_event_mask_page_2(struct hci_request *req)
+ events[2] |= 0x02; /* CSB Receive */
+ events[2] |= 0x04; /* CSB Timeout */
+ events[2] |= 0x08; /* Truncated Page Complete */
++ changed = true;
+ }
+
+ /* Enable Authenticated Payload Timeout Expired event if supported */
+- if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING)
++ if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) {
+ events[2] |= 0x80;
++ changed = true;
++ }
+
+- hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events);
++ /* Some Broadcom based controllers indicate support for Set Event
++ * Mask Page 2 command, but then actually do not support it. Since
++ * the default value is all bits set to zero, the command is only
++ * required if the event mask has to be changed. In case no change
++ * to the event mask is needed, skip this command.
++ */
++ if (changed)
++ hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2,
++ sizeof(events), events);
+ }
+
+ static void hci_init3_req(struct hci_request *req, unsigned long opt)
+diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
+index e4b56fcb5d4e..e259b9da05f1 100644
+--- a/net/bluetooth/smp.c
++++ b/net/bluetooth/smp.c
+@@ -2250,8 +2250,14 @@ static u8 smp_cmd_security_req(struct l2cap_conn *conn, struct sk_buff *skb)
+ else
+ sec_level = authreq_to_seclevel(auth);
+
+- if (smp_sufficient_security(hcon, sec_level, SMP_USE_LTK))
++ if (smp_sufficient_security(hcon, sec_level, SMP_USE_LTK)) {
++ /* If link is already encrypted with sufficient security we
++ * still need refresh encryption as per Core Spec 5.0 Vol 3,
++ * Part H 2.4.6
++ */
++ smp_ltk_encrypt(conn, hcon->sec_level);
+ return 0;
++ }
+
+ if (sec_level > hcon->pending_sec_level)
+ hcon->pending_sec_level = sec_level;
+diff --git a/net/bridge/netfilter/ebt_among.c b/net/bridge/netfilter/ebt_among.c
+index 9637a681bdda..9adf16258cab 100644
+--- a/net/bridge/netfilter/ebt_among.c
++++ b/net/bridge/netfilter/ebt_among.c
+@@ -177,6 +177,28 @@ static bool poolsize_invalid(const struct ebt_mac_wormhash *w)
+ return w && w->poolsize >= (INT_MAX / sizeof(struct ebt_mac_wormhash_tuple));
+ }
+
++static bool wormhash_offset_invalid(int off, unsigned int len)
++{
++ if (off == 0) /* not present */
++ return false;
++
++ if (off < (int)sizeof(struct ebt_among_info) ||
++ off % __alignof__(struct ebt_mac_wormhash))
++ return true;
++
++ off += sizeof(struct ebt_mac_wormhash);
++
++ return off > len;
++}
++
++static bool wormhash_sizes_valid(const struct ebt_mac_wormhash *wh, int a, int b)
++{
++ if (a == 0)
++ a = sizeof(struct ebt_among_info);
++
++ return ebt_mac_wormhash_size(wh) + a == b;
++}
++
+ static int ebt_among_mt_check(const struct xt_mtchk_param *par)
+ {
+ const struct ebt_among_info *info = par->matchinfo;
+@@ -189,6 +211,10 @@ static int ebt_among_mt_check(const struct xt_mtchk_param *par)
+ if (expected_length > em->match_size)
+ return -EINVAL;
+
++ if (wormhash_offset_invalid(info->wh_dst_ofs, em->match_size) ||
++ wormhash_offset_invalid(info->wh_src_ofs, em->match_size))
++ return -EINVAL;
++
+ wh_dst = ebt_among_wh_dst(info);
+ if (poolsize_invalid(wh_dst))
+ return -EINVAL;
+@@ -201,6 +227,14 @@ static int ebt_among_mt_check(const struct xt_mtchk_param *par)
+ if (poolsize_invalid(wh_src))
+ return -EINVAL;
+
++ if (info->wh_src_ofs < info->wh_dst_ofs) {
++ if (!wormhash_sizes_valid(wh_src, info->wh_src_ofs, info->wh_dst_ofs))
++ return -EINVAL;
++ } else {
++ if (!wormhash_sizes_valid(wh_dst, info->wh_dst_ofs, info->wh_src_ofs))
++ return -EINVAL;
++ }
++
+ expected_length += ebt_mac_wormhash_size(wh_src);
+
+ if (em->match_size != EBT_ALIGN(expected_length)) {
+diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
+index d30864a8ed57..1e08c25c43f3 100644
+--- a/net/ceph/messenger.c
++++ b/net/ceph/messenger.c
+@@ -2518,6 +2518,11 @@ static int try_write(struct ceph_connection *con)
+ int ret = 1;
+
+ dout("try_write start %p state %lu\n", con, con->state);
++ if (con->state != CON_STATE_PREOPEN &&
++ con->state != CON_STATE_CONNECTING &&
++ con->state != CON_STATE_NEGOTIATING &&
++ con->state != CON_STATE_OPEN)
++ return 0;
+
+ more:
+ dout("try_write out_kvec_bytes %d\n", con->out_kvec_bytes);
+@@ -2543,6 +2548,8 @@ more:
+ }
+
+ more_kvec:
++ BUG_ON(!con->sock);
++
+ /* kvec data queued? */
+ if (con->out_kvec_left) {
+ ret = write_partial_kvec(con);
+diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
+index bc95e48d5cfb..378c9ed00d40 100644
+--- a/net/ceph/osdmap.c
++++ b/net/ceph/osdmap.c
+@@ -295,6 +295,7 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
+ u32 yes;
+ struct crush_rule *r;
+
++ err = -EINVAL;
+ ceph_decode_32_safe(p, end, yes, bad);
+ if (!yes) {
+ dout("crush_decode NO rule %d off %x %p to %p\n",
+diff --git a/net/core/dev.c b/net/core/dev.c
+index c2d927f91a30..1cbbc79b4509 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -957,7 +957,7 @@ bool dev_valid_name(const char *name)
+ {
+ if (*name == '\0')
+ return false;
+- if (strlen(name) >= IFNAMSIZ)
++ if (strnlen(name, IFNAMSIZ) == IFNAMSIZ)
+ return false;
+ if (!strcmp(name, ".") || !strcmp(name, ".."))
+ return false;
+@@ -2430,7 +2430,7 @@ __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
+ if (unlikely(!pskb_may_pull(skb, sizeof(struct ethhdr))))
+ return 0;
+
+- eth = (struct ethhdr *)skb_mac_header(skb);
++ eth = (struct ethhdr *)skb->data;
+ type = eth->h_proto;
+ }
+
+@@ -2621,7 +2621,7 @@ netdev_features_t passthru_features_check(struct sk_buff *skb,
+ }
+ EXPORT_SYMBOL(passthru_features_check);
+
+-static netdev_features_t dflt_features_check(const struct sk_buff *skb,
++static netdev_features_t dflt_features_check(struct sk_buff *skb,
+ struct net_device *dev,
+ netdev_features_t features)
+ {
+diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c
+index c0548d268e1a..e3e6a3e2ca22 100644
+--- a/net/core/dev_addr_lists.c
++++ b/net/core/dev_addr_lists.c
+@@ -57,8 +57,8 @@ static int __hw_addr_add_ex(struct netdev_hw_addr_list *list,
+ return -EINVAL;
+
+ list_for_each_entry(ha, &list->list, list) {
+- if (!memcmp(ha->addr, addr, addr_len) &&
+- ha->type == addr_type) {
++ if (ha->type == addr_type &&
++ !memcmp(ha->addr, addr, addr_len)) {
+ if (global) {
+ /* check if addr is already used as global */
+ if (ha->global_use)
+diff --git a/net/core/neighbour.c b/net/core/neighbour.c
+index 5fd6c6e699aa..c305645b22bc 100644
+--- a/net/core/neighbour.c
++++ b/net/core/neighbour.c
+@@ -54,7 +54,8 @@ do { \
+ static void neigh_timer_handler(unsigned long arg);
+ static void __neigh_notify(struct neighbour *n, int type, int flags);
+ static void neigh_update_notify(struct neighbour *neigh);
+-static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev);
++static int pneigh_ifdown_and_unlock(struct neigh_table *tbl,
++ struct net_device *dev);
+
+ #ifdef CONFIG_PROC_FS
+ static const struct file_operations neigh_stat_seq_fops;
+@@ -254,8 +255,7 @@ int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
+ {
+ write_lock_bh(&tbl->lock);
+ neigh_flush_dev(tbl, dev);
+- pneigh_ifdown(tbl, dev);
+- write_unlock_bh(&tbl->lock);
++ pneigh_ifdown_and_unlock(tbl, dev);
+
+ del_timer_sync(&tbl->proxy_timer);
+ pneigh_queue_purge(&tbl->proxy_queue);
+@@ -641,9 +641,10 @@ int pneigh_delete(struct neigh_table *tbl, struct net *net, const void *pkey,
+ return -ENOENT;
+ }
+
+-static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
++static int pneigh_ifdown_and_unlock(struct neigh_table *tbl,
++ struct net_device *dev)
+ {
+- struct pneigh_entry *n, **np;
++ struct pneigh_entry *n, **np, *freelist = NULL;
+ u32 h;
+
+ for (h = 0; h <= PNEIGH_HASHMASK; h++) {
+@@ -651,16 +652,23 @@ static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
+ while ((n = *np) != NULL) {
+ if (!dev || n->dev == dev) {
+ *np = n->next;
+- if (tbl->pdestructor)
+- tbl->pdestructor(n);
+- if (n->dev)
+- dev_put(n->dev);
+- kfree(n);
++ n->next = freelist;
++ freelist = n;
+ continue;
+ }
+ np = &n->next;
+ }
+ }
++ write_unlock_bh(&tbl->lock);
++ while ((n = freelist)) {
++ freelist = n->next;
++ n->next = NULL;
++ if (tbl->pdestructor)
++ tbl->pdestructor(n);
++ if (n->dev)
++ dev_put(n->dev);
++ kfree(n);
++ }
+ return -ENOENT;
+ }
+
+@@ -1127,10 +1135,6 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
+ lladdr = neigh->ha;
+ }
+
+- if (new & NUD_CONNECTED)
+- neigh->confirmed = jiffies;
+- neigh->updated = jiffies;
+-
+ /* If entry was valid and address is not changed,
+ do not change entry state, if new one is STALE.
+ */
+@@ -1154,6 +1158,16 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
+ }
+ }
+
++ /* Update timestamps only once we know we will make a change to the
++ * neighbour entry. Otherwise we risk to move the locktime window with
++ * noop updates and ignore relevant ARP updates.
++ */
++ if (new != old || lladdr != neigh->ha) {
++ if (new & NUD_CONNECTED)
++ neigh->confirmed = jiffies;
++ neigh->updated = jiffies;
++ }
++
+ if (new != old) {
+ neigh_del_timer(neigh);
+ if (new & NUD_IN_TIMER)
+diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
+index 572af0011997..9195a109ea79 100644
+--- a/net/core/net_namespace.c
++++ b/net/core/net_namespace.c
+@@ -268,6 +268,25 @@ out_undo:
+ goto out;
+ }
+
++static int __net_init net_defaults_init_net(struct net *net)
++{
++ net->core.sysctl_somaxconn = SOMAXCONN;
++ return 0;
++}
++
++static struct pernet_operations net_defaults_ops = {
++ .init = net_defaults_init_net,
++};
++
++static __init int net_defaults_init(void)
++{
++ if (register_pernet_subsys(&net_defaults_ops))
++ panic("Cannot initialize net default settings");
++
++ return 0;
++}
++
++core_initcall(net_defaults_init);
+
+ #ifdef CONFIG_NET_NS
+ static struct kmem_cache *net_cachep;
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 853e82075ebd..ac1436be3cf7 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -875,6 +875,7 @@ static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb)
+ n->hdr_len = skb->nohdr ? skb_headroom(skb) : skb->hdr_len;
+ n->cloned = 1;
+ n->nohdr = 0;
++ n->peeked = 0;
+ n->destructor = NULL;
+ C(tail);
+ C(end);
+@@ -2587,7 +2588,8 @@ void skb_split(struct sk_buff *skb, struct sk_buff *skb1, const u32 len)
+ {
+ int pos = skb_headlen(skb);
+
+- skb_shinfo(skb1)->tx_flags = skb_shinfo(skb)->tx_flags & SKBTX_SHARED_FRAG;
++ skb_shinfo(skb1)->tx_flags |= skb_shinfo(skb)->tx_flags &
++ SKBTX_SHARED_FRAG;
+ if (len < pos) /* Split line is inside header. */
+ skb_split_inside_header(skb, skb1, len, pos);
+ else /* Second chunk has no header, nothing to copy. */
+@@ -3133,8 +3135,8 @@ struct sk_buff *skb_segment(struct sk_buff *head_skb,
+ skb_copy_from_linear_data_offset(head_skb, offset,
+ skb_put(nskb, hsize), hsize);
+
+- skb_shinfo(nskb)->tx_flags = skb_shinfo(head_skb)->tx_flags &
+- SKBTX_SHARED_FRAG;
++ skb_shinfo(nskb)->tx_flags |= skb_shinfo(head_skb)->tx_flags &
++ SKBTX_SHARED_FRAG;
+
+ while (pos < offset + len) {
+ if (i >= nfrags) {
+@@ -3347,24 +3349,18 @@ void __init skb_init(void)
+ NULL);
+ }
+
+-/**
+- * skb_to_sgvec - Fill a scatter-gather list from a socket buffer
+- * @skb: Socket buffer containing the buffers to be mapped
+- * @sg: The scatter-gather list to map into
+- * @offset: The offset into the buffer's contents to start mapping
+- * @len: Length of buffer space to be mapped
+- *
+- * Fill the specified scatter-gather list with mappings/pointers into a
+- * region of the buffer space attached to a socket buffer.
+- */
+ static int
+-__skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
++__skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len,
++ unsigned int recursion_level)
+ {
+ int start = skb_headlen(skb);
+ int i, copy = start - offset;
+ struct sk_buff *frag_iter;
+ int elt = 0;
+
++ if (unlikely(recursion_level >= 24))
++ return -EMSGSIZE;
++
+ if (copy > 0) {
+ if (copy > len)
+ copy = len;
+@@ -3383,6 +3379,8 @@ __skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
+ end = start + skb_frag_size(&skb_shinfo(skb)->frags[i]);
+ if ((copy = end - offset) > 0) {
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
++ if (unlikely(elt && sg_is_last(&sg[elt - 1])))
++ return -EMSGSIZE;
+
+ if (copy > len)
+ copy = len;
+@@ -3397,16 +3395,22 @@ __skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
+ }
+
+ skb_walk_frags(skb, frag_iter) {
+- int end;
++ int end, ret;
+
+ WARN_ON(start > offset + len);
+
+ end = start + frag_iter->len;
+ if ((copy = end - offset) > 0) {
++ if (unlikely(elt && sg_is_last(&sg[elt - 1])))
++ return -EMSGSIZE;
++
+ if (copy > len)
+ copy = len;
+- elt += __skb_to_sgvec(frag_iter, sg+elt, offset - start,
+- copy);
++ ret = __skb_to_sgvec(frag_iter, sg+elt, offset - start,
++ copy, recursion_level + 1);
++ if (unlikely(ret < 0))
++ return ret;
++ elt += ret;
+ if ((len -= copy) == 0)
+ return elt;
+ offset += copy;
+@@ -3417,6 +3421,31 @@ __skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
+ return elt;
+ }
+
++/**
++ * skb_to_sgvec - Fill a scatter-gather list from a socket buffer
++ * @skb: Socket buffer containing the buffers to be mapped
++ * @sg: The scatter-gather list to map into
++ * @offset: The offset into the buffer's contents to start mapping
++ * @len: Length of buffer space to be mapped
++ *
++ * Fill the specified scatter-gather list with mappings/pointers into a
++ * region of the buffer space attached to a socket buffer. Returns either
++ * the number of scatterlist items used, or -EMSGSIZE if the contents
++ * could not fit.
++ */
++int skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
++{
++ int nsg = __skb_to_sgvec(skb, sg, offset, len, 0);
++
++ if (nsg <= 0)
++ return nsg;
++
++ sg_mark_end(&sg[nsg - 1]);
++
++ return nsg;
++}
++EXPORT_SYMBOL_GPL(skb_to_sgvec);
++
+ /* As compared with skb_to_sgvec, skb_to_sgvec_nomark only map skb to given
+ * sglist without mark the sg which contain last skb data as the end.
+ * So the caller can mannipulate sg list as will when padding new data after
+@@ -3439,19 +3468,11 @@ __skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
+ int skb_to_sgvec_nomark(struct sk_buff *skb, struct scatterlist *sg,
+ int offset, int len)
+ {
+- return __skb_to_sgvec(skb, sg, offset, len);
++ return __skb_to_sgvec(skb, sg, offset, len, 0);
+ }
+ EXPORT_SYMBOL_GPL(skb_to_sgvec_nomark);
+
+-int skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
+-{
+- int nsg = __skb_to_sgvec(skb, sg, offset, len);
+
+- sg_mark_end(&sg[nsg - 1]);
+-
+- return nsg;
+-}
+-EXPORT_SYMBOL_GPL(skb_to_sgvec);
+
+ /**
+ * skb_cow_data - Check that a socket buffer's data buffers are writable
+@@ -3589,7 +3610,7 @@ int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb)
+
+ skb_queue_tail(&sk->sk_error_queue, skb);
+ if (!sock_flag(sk, SOCK_DEAD))
+- sk->sk_data_ready(sk);
++ sk->sk_error_report(sk);
+ return 0;
+ }
+ EXPORT_SYMBOL(sock_queue_err_skb);
+@@ -3733,7 +3754,8 @@ void __skb_tstamp_tx(struct sk_buff *orig_skb,
+ return;
+
+ if (tsonly) {
+- skb_shinfo(skb)->tx_flags = skb_shinfo(orig_skb)->tx_flags;
++ skb_shinfo(skb)->tx_flags |= skb_shinfo(orig_skb)->tx_flags &
++ SKBTX_ANY_TSTAMP;
+ skb_shinfo(skb)->tskey = skb_shinfo(orig_skb)->tskey;
+ }
+
+diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
+index f5ef2115871f..a9a4276609ef 100644
+--- a/net/core/sysctl_net_core.c
++++ b/net/core/sysctl_net_core.c
+@@ -423,8 +423,6 @@ static __net_init int sysctl_core_net_init(struct net *net)
+ {
+ struct ctl_table *tbl;
+
+- net->core.sysctl_somaxconn = SOMAXCONN;
+-
+ tbl = netns_core_table;
+ if (!net_eq(net, &init_net)) {
+ tbl = kmemdup(tbl, sizeof(netns_core_table), GFP_KERNEL);
+diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
+index bafb2223b879..2fa37d32ae3b 100644
+--- a/net/dccp/ipv4.c
++++ b/net/dccp/ipv4.c
+@@ -642,6 +642,7 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
+ ireq = inet_rsk(req);
+ sk_rcv_saddr_set(req_to_sk(req), ip_hdr(skb)->daddr);
+ sk_daddr_set(req_to_sk(req), ip_hdr(skb)->saddr);
++ ireq->ir_mark = inet_request_mark(sk, skb);
+ ireq->ireq_family = AF_INET;
+ ireq->ir_iif = sk->sk_bound_dev_if;
+
+diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
+index d61027e78e25..a56919d47403 100644
+--- a/net/dccp/ipv6.c
++++ b/net/dccp/ipv6.c
+@@ -375,6 +375,7 @@ static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
+ ireq->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr;
+ ireq->ir_v6_loc_addr = ipv6_hdr(skb)->daddr;
+ ireq->ireq_family = AF_INET6;
++ ireq->ir_mark = inet_request_mark(sk, skb);
+
+ if (ipv6_opt_accepted(sk, skb, IP6CB(skb)) ||
+ np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo ||
+diff --git a/net/dccp/proto.c b/net/dccp/proto.c
+index a20dc23360f9..be71e07ba6f1 100644
+--- a/net/dccp/proto.c
++++ b/net/dccp/proto.c
+@@ -790,6 +790,11 @@ int dccp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ if (skb == NULL)
+ goto out_release;
+
++ if (sk->sk_state == DCCP_CLOSED) {
++ rc = -ENOTCONN;
++ goto out_discard;
++ }
++
+ skb_reserve(skb, sk->sk_prot->max_header);
+ rc = memcpy_from_msg(skb_put(skb, len), msg, len);
+ if (rc != 0)
+diff --git a/net/dns_resolver/dns_key.c b/net/dns_resolver/dns_key.c
+index 31cd4fd75486..4b437445c2ea 100644
+--- a/net/dns_resolver/dns_key.c
++++ b/net/dns_resolver/dns_key.c
+@@ -25,6 +25,7 @@
+ #include <linux/moduleparam.h>
+ #include <linux/slab.h>
+ #include <linux/string.h>
++#include <linux/ratelimit.h>
+ #include <linux/kernel.h>
+ #include <linux/keyctl.h>
+ #include <linux/err.h>
+@@ -91,9 +92,9 @@ dns_resolver_preparse(struct key_preparsed_payload *prep)
+
+ next_opt = memchr(opt, '#', end - opt) ?: end;
+ opt_len = next_opt - opt;
+- if (!opt_len) {
+- printk(KERN_WARNING
+- "Empty option to dns_resolver key\n");
++ if (opt_len <= 0 || opt_len > 128) {
++ pr_warn_ratelimited("Invalid option length (%d) for dns_resolver key\n",
++ opt_len);
+ return -EINVAL;
+ }
+
+@@ -127,10 +128,8 @@ dns_resolver_preparse(struct key_preparsed_payload *prep)
+ }
+
+ bad_option_value:
+- printk(KERN_WARNING
+- "Option '%*.*s' to dns_resolver key:"
+- " bad/missing value\n",
+- opt_nlen, opt_nlen, opt);
++ pr_warn_ratelimited("Option '%*.*s' to dns_resolver key: bad/missing value\n",
++ opt_nlen, opt_nlen, opt);
+ return -EINVAL;
+ } while (opt = next_opt + 1, opt < end);
+ }
+diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
+index 627a2537634e..7c5040c4fa90 100644
+--- a/net/ieee802154/socket.c
++++ b/net/ieee802154/socket.c
+@@ -310,12 +310,12 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
+ skb->sk = sk;
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+- dev_put(dev);
+-
+ err = dev_queue_xmit(skb);
+ if (err > 0)
+ err = net_xmit_errno(err);
+
++ dev_put(dev);
++
+ return err ?: size;
+
+ out_skb:
+@@ -697,12 +697,12 @@ static int dgram_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
+ skb->sk = sk;
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+- dev_put(dev);
+-
+ err = dev_queue_xmit(skb);
+ if (err > 0)
+ err = net_xmit_errno(err);
+
++ dev_put(dev);
++
+ return err ?: size;
+
+ out_skb:
+diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
+index bb96c1c4edd6..35ea352a9cef 100644
+--- a/net/ipv4/inet_timewait_sock.c
++++ b/net/ipv4/inet_timewait_sock.c
+@@ -212,6 +212,7 @@ struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk,
+ tw->tw_dport = inet->inet_dport;
+ tw->tw_family = sk->sk_family;
+ tw->tw_reuse = sk->sk_reuse;
++ tw->tw_reuseport = sk->sk_reuseport;
+ tw->tw_hash = sk->sk_hash;
+ tw->tw_ipv6only = 0;
+ tw->tw_transparent = inet->transparent;
+diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
+index 67c1333422a4..d4bdeed4e0a4 100644
+--- a/net/ipv4/ip_sockglue.c
++++ b/net/ipv4/ip_sockglue.c
+@@ -239,7 +239,8 @@ int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc,
+ src_info = (struct in6_pktinfo *)CMSG_DATA(cmsg);
+ if (!ipv6_addr_v4mapped(&src_info->ipi6_addr))
+ return -EINVAL;
+- ipc->oif = src_info->ipi6_ifindex;
++ if (src_info->ipi6_ifindex)
++ ipc->oif = src_info->ipi6_ifindex;
+ ipc->addr = src_info->ipi6_addr.s6_addr32[3];
+ continue;
+ }
+@@ -262,7 +263,8 @@ int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc,
+ if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct in_pktinfo)))
+ return -EINVAL;
+ info = (struct in_pktinfo *)CMSG_DATA(cmsg);
+- ipc->oif = info->ipi_ifindex;
++ if (info->ipi_ifindex)
++ ipc->oif = info->ipi_ifindex;
+ ipc->addr = info->ipi_spec_dst.s_addr;
+ break;
+ }
+diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
+index 169bf7d1d8ca..2385ec7083c6 100644
+--- a/net/ipv4/ip_tunnel.c
++++ b/net/ipv4/ip_tunnel.c
+@@ -301,13 +301,14 @@ static struct net_device *__ip_tunnel_create(struct net *net,
+ struct net_device *dev;
+ char name[IFNAMSIZ];
+
+- if (parms->name[0])
++ err = -E2BIG;
++ if (parms->name[0]) {
++ if (!dev_valid_name(parms->name))
++ goto failed;
+ strlcpy(name, parms->name, IFNAMSIZ);
+- else {
+- if (strlen(ops->kind) > (IFNAMSIZ - 3)) {
+- err = -E2BIG;
++ } else {
++ if (strlen(ops->kind) > (IFNAMSIZ - 3))
+ goto failed;
+- }
+ strlcpy(name, ops->kind, IFNAMSIZ);
+ strncat(name, "%d", 2);
+ }
+diff --git a/net/ipv4/netfilter/nf_nat_h323.c b/net/ipv4/netfilter/nf_nat_h323.c
+index 574f7ebba0b6..ac8342dcb55e 100644
+--- a/net/ipv4/netfilter/nf_nat_h323.c
++++ b/net/ipv4/netfilter/nf_nat_h323.c
+@@ -252,16 +252,16 @@ static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
+ if (set_h245_addr(skb, protoff, data, dataoff, taddr,
+ &ct->tuplehash[!dir].tuple.dst.u3,
+ htons((port & htons(1)) ? nated_port + 1 :
+- nated_port)) == 0) {
+- /* Save ports */
+- info->rtp_port[i][dir] = rtp_port;
+- info->rtp_port[i][!dir] = htons(nated_port);
+- } else {
++ nated_port))) {
+ nf_ct_unexpect_related(rtp_exp);
+ nf_ct_unexpect_related(rtcp_exp);
+ return -1;
+ }
+
++ /* Save ports */
++ info->rtp_port[i][dir] = rtp_port;
++ info->rtp_port[i][!dir] = htons(nated_port);
++
+ /* Success */
+ pr_debug("nf_nat_h323: expect RTP %pI4:%hu->%pI4:%hu\n",
+ &rtp_exp->tuple.src.u3.ip,
+@@ -370,15 +370,15 @@ static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
+ /* Modify signal */
+ if (set_h225_addr(skb, protoff, data, dataoff, taddr,
+ &ct->tuplehash[!dir].tuple.dst.u3,
+- htons(nated_port)) == 0) {
+- /* Save ports */
+- info->sig_port[dir] = port;
+- info->sig_port[!dir] = htons(nated_port);
+- } else {
++ htons(nated_port))) {
+ nf_ct_unexpect_related(exp);
+ return -1;
+ }
+
++ /* Save ports */
++ info->sig_port[dir] = port;
++ info->sig_port[!dir] = htons(nated_port);
++
+ pr_debug("nf_nat_q931: expect H.245 %pI4:%hu->%pI4:%hu\n",
+ &exp->tuple.src.u3.ip,
+ ntohs(exp->tuple.src.u.tcp.port),
+@@ -462,24 +462,27 @@ static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
+ /* Modify signal */
+ if (set_h225_addr(skb, protoff, data, 0, &taddr[idx],
+ &ct->tuplehash[!dir].tuple.dst.u3,
+- htons(nated_port)) == 0) {
+- /* Save ports */
+- info->sig_port[dir] = port;
+- info->sig_port[!dir] = htons(nated_port);
+-
+- /* Fix for Gnomemeeting */
+- if (idx > 0 &&
+- get_h225_addr(ct, *data, &taddr[0], &addr, &port) &&
+- (ntohl(addr.ip) & 0xff000000) == 0x7f000000) {
+- set_h225_addr(skb, protoff, data, 0, &taddr[0],
+- &ct->tuplehash[!dir].tuple.dst.u3,
+- info->sig_port[!dir]);
+- }
+- } else {
++ htons(nated_port))) {
+ nf_ct_unexpect_related(exp);
+ return -1;
+ }
+
++ /* Save ports */
++ info->sig_port[dir] = port;
++ info->sig_port[!dir] = htons(nated_port);
++
++ /* Fix for Gnomemeeting */
++ if (idx > 0 &&
++ get_h225_addr(ct, *data, &taddr[0], &addr, &port) &&
++ (ntohl(addr.ip) & 0xff000000) == 0x7f000000) {
++ if (set_h225_addr(skb, protoff, data, 0, &taddr[0],
++ &ct->tuplehash[!dir].tuple.dst.u3,
++ info->sig_port[!dir])) {
++ nf_ct_unexpect_related(exp);
++ return -1;
++ }
++ }
++
+ /* Success */
+ pr_debug("nf_nat_ras: expect Q.931 %pI4:%hu->%pI4:%hu\n",
+ &exp->tuple.src.u3.ip,
+@@ -550,9 +553,9 @@ static int nat_callforwarding(struct sk_buff *skb, struct nf_conn *ct,
+ }
+
+ /* Modify signal */
+- if (!set_h225_addr(skb, protoff, data, dataoff, taddr,
+- &ct->tuplehash[!dir].tuple.dst.u3,
+- htons(nated_port)) == 0) {
++ if (set_h225_addr(skb, protoff, data, dataoff, taddr,
++ &ct->tuplehash[!dir].tuple.dst.u3,
++ htons(nated_port))) {
+ nf_ct_unexpect_related(exp);
+ return -1;
+ }
+diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
+index 9a2294d01b9d..acf09ab17a62 100644
+--- a/net/ipv4/raw.c
++++ b/net/ipv4/raw.c
+@@ -496,11 +496,16 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ int err;
+ struct ip_options_data opt_copy;
+ struct raw_frag_vec rfv;
++ int hdrincl;
+
+ err = -EMSGSIZE;
+ if (len > 0xFFFF)
+ goto out;
+
++ /* hdrincl should be READ_ONCE(inet->hdrincl)
++ * but READ_ONCE() doesn't work with bit fields
++ */
++ hdrincl = inet->hdrincl;
+ /*
+ * Check the flags.
+ */
+@@ -575,7 +580,7 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ /* Linux does not mangle headers on raw sockets,
+ * so that IP options + IP_HDRINCL is non-sense.
+ */
+- if (inet->hdrincl)
++ if (hdrincl)
+ goto done;
+ if (ipc.opt->opt.srr) {
+ if (!daddr)
+@@ -597,12 +602,12 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+
+ flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,
+ RT_SCOPE_UNIVERSE,
+- inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol,
++ hdrincl ? IPPROTO_RAW : sk->sk_protocol,
+ inet_sk_flowi_flags(sk) |
+- (inet->hdrincl ? FLOWI_FLAG_KNOWN_NH : 0),
++ (hdrincl ? FLOWI_FLAG_KNOWN_NH : 0),
+ daddr, saddr, 0, 0);
+
+- if (!inet->hdrincl) {
++ if (!hdrincl) {
+ rfv.msg = msg;
+ rfv.hlen = 0;
+
+@@ -627,7 +632,7 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ goto do_confirm;
+ back_from_confirm:
+
+- if (inet->hdrincl)
++ if (hdrincl)
+ err = raw_send_hdrinc(sk, &fl4, msg, len,
+ &rt, msg->msg_flags);
+
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index 94a4b28e5da6..07d65ae018ee 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -2416,7 +2416,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
+ case TCP_REPAIR_QUEUE:
+ if (!tp->repair)
+ err = -EPERM;
+- else if (val < TCP_QUEUES_NR)
++ else if ((unsigned int)val < TCP_QUEUES_NR)
+ tp->repair_queue = val;
+ else
+ err = -EINVAL;
+@@ -2548,8 +2548,10 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
+
+ #ifdef CONFIG_TCP_MD5SIG
+ case TCP_MD5SIG:
+- /* Read the IP->Key mappings from userspace */
+- err = tp->af_specific->md5_parse(sk, optval, optlen);
++ if ((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN))
++ err = tp->af_specific->md5_parse(sk, optval, optlen);
++ else
++ err = -EINVAL;
+ break;
+ #endif
+ case TCP_USER_TIMEOUT:
+diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
+index 4763c431f7d8..d61371cefaf0 100644
+--- a/net/ipv4/tcp_input.c
++++ b/net/ipv4/tcp_input.c
+@@ -3819,11 +3819,8 @@ const u8 *tcp_parse_md5sig_option(const struct tcphdr *th)
+ int length = (th->doff << 2) - sizeof(*th);
+ const u8 *ptr = (const u8 *)(th + 1);
+
+- /* If the TCP option is too short, we can short cut */
+- if (length < TCPOLEN_MD5SIG)
+- return NULL;
+-
+- while (length > 0) {
++ /* If not enough data remaining, we can short cut */
++ while (length >= TCPOLEN_MD5SIG) {
+ int opcode = *ptr++;
+ int opsize;
+
+@@ -5417,10 +5414,6 @@ void tcp_finish_connect(struct sock *sk, struct sk_buff *skb)
+ else
+ tp->pred_flags = 0;
+
+- if (!sock_flag(sk, SOCK_DEAD)) {
+- sk->sk_state_change(sk);
+- sk_wake_async(sk, SOCK_WAKE_IO, POLL_OUT);
+- }
+ }
+
+ static bool tcp_rcv_fastopen_synack(struct sock *sk, struct sk_buff *synack,
+@@ -5484,6 +5477,7 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
+ struct tcp_sock *tp = tcp_sk(sk);
+ struct tcp_fastopen_cookie foc = { .len = -1 };
+ int saved_clamp = tp->rx_opt.mss_clamp;
++ bool fastopen_fail;
+
+ tcp_parse_options(skb, &tp->rx_opt, 0, &foc);
+ if (tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr)
+@@ -5586,10 +5580,15 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
+
+ tcp_finish_connect(sk, skb);
+
+- if ((tp->syn_fastopen || tp->syn_data) &&
+- tcp_rcv_fastopen_synack(sk, skb, &foc))
+- return -1;
++ fastopen_fail = (tp->syn_fastopen || tp->syn_data) &&
++ tcp_rcv_fastopen_synack(sk, skb, &foc);
+
++ if (!sock_flag(sk, SOCK_DEAD)) {
++ sk->sk_state_change(sk);
++ sk_wake_async(sk, SOCK_WAKE_IO, POLL_OUT);
++ }
++ if (fastopen_fail)
++ return -1;
+ if (sk->sk_write_pending ||
+ icsk->icsk_accept_queue.rskq_defer_accept ||
+ icsk->icsk_ack.pingpong) {
+diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
+index 8441f9939d49..185ccfd781ed 100644
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -886,7 +886,10 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
+ INIT_HLIST_NODE(&ifa->addr_lst);
+ ifa->scope = scope;
+ ifa->prefix_len = pfxlen;
+- ifa->flags = flags | IFA_F_TENTATIVE;
++ ifa->flags = flags;
++ /* No need to add the TENTATIVE flag for addresses with NODAD */
++ if (!(flags & IFA_F_NODAD))
++ ifa->flags |= IFA_F_TENTATIVE;
+ ifa->valid_lft = valid_lft;
+ ifa->prefered_lft = prefered_lft;
+ ifa->cstamp = ifa->tstamp = jiffies;
+diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
+index b1311da5d7b8..cda3cc6c3535 100644
+--- a/net/ipv6/ip6_gre.c
++++ b/net/ipv6/ip6_gre.c
+@@ -319,11 +319,13 @@ static struct ip6_tnl *ip6gre_tunnel_locate(struct net *net,
+ if (t || !create)
+ return t;
+
+- if (parms->name[0])
++ if (parms->name[0]) {
++ if (!dev_valid_name(parms->name))
++ return NULL;
+ strlcpy(name, parms->name, IFNAMSIZ);
+- else
++ } else {
+ strcpy(name, "ip6gre%d");
+-
++ }
+ dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN,
+ ip6gre_tunnel_setup);
+ if (!dev)
+diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
+index c7c2c33aa4af..2219f454c0db 100644
+--- a/net/ipv6/ip6_tunnel.c
++++ b/net/ipv6/ip6_tunnel.c
+@@ -316,13 +316,16 @@ static struct ip6_tnl *ip6_tnl_create(struct net *net, struct __ip6_tnl_parm *p)
+ struct net_device *dev;
+ struct ip6_tnl *t;
+ char name[IFNAMSIZ];
+- int err = -ENOMEM;
++ int err = -E2BIG;
+
+- if (p->name[0])
++ if (p->name[0]) {
++ if (!dev_valid_name(p->name))
++ goto failed;
+ strlcpy(name, p->name, IFNAMSIZ);
+- else
++ } else {
+ sprintf(name, "ip6tnl%%d");
+-
++ }
++ err = -ENOMEM;
+ dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN,
+ ip6_tnl_dev_setup);
+ if (!dev)
+diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
+index c460e653b6a5..9b1c466fd0fd 100644
+--- a/net/ipv6/ip6_vti.c
++++ b/net/ipv6/ip6_vti.c
+@@ -212,10 +212,13 @@ static struct ip6_tnl *vti6_tnl_create(struct net *net, struct __ip6_tnl_parm *p
+ char name[IFNAMSIZ];
+ int err;
+
+- if (p->name[0])
++ if (p->name[0]) {
++ if (!dev_valid_name(p->name))
++ goto failed;
+ strlcpy(name, p->name, IFNAMSIZ);
+- else
++ } else {
+ sprintf(name, "ip6_vti%%d");
++ }
+
+ dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN, vti6_dev_setup);
+ if (!dev)
+@@ -614,6 +617,7 @@ static void vti6_link_config(struct ip6_tnl *t)
+ {
+ struct net_device *dev = t->dev;
+ struct __ip6_tnl_parm *p = &t->parms;
++ struct net_device *tdev = NULL;
+
+ memcpy(dev->dev_addr, &p->laddr, sizeof(struct in6_addr));
+ memcpy(dev->broadcast, &p->raddr, sizeof(struct in6_addr));
+@@ -626,6 +630,25 @@ static void vti6_link_config(struct ip6_tnl *t)
+ dev->flags |= IFF_POINTOPOINT;
+ else
+ dev->flags &= ~IFF_POINTOPOINT;
++
++ if (p->flags & IP6_TNL_F_CAP_XMIT) {
++ int strict = (ipv6_addr_type(&p->raddr) &
++ (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL));
++ struct rt6_info *rt = rt6_lookup(t->net,
++ &p->raddr, &p->laddr,
++ p->link, strict);
++
++ if (rt)
++ tdev = rt->dst.dev;
++ ip6_rt_put(rt);
++ }
++
++ if (!tdev && p->link)
++ tdev = __dev_get_by_index(t->net, p->link);
++
++ if (tdev)
++ dev->mtu = max_t(int, tdev->mtu - dev->hard_header_len,
++ IPV6_MIN_MTU);
+ }
+
+ /**
+diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
+index abb0bdda759a..460f63619552 100644
+--- a/net/ipv6/ndisc.c
++++ b/net/ipv6/ndisc.c
+@@ -1452,7 +1452,8 @@ static void ndisc_fill_redirect_hdr_option(struct sk_buff *skb,
+ *(opt++) = (rd_len >> 3);
+ opt += 6;
+
+- memcpy(opt, ipv6_hdr(orig_skb), rd_len - 8);
++ skb_copy_bits(orig_skb, skb_network_offset(orig_skb), opt,
++ rd_len - 8);
+ }
+
+ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
+@@ -1655,6 +1656,8 @@ static int ndisc_netdev_event(struct notifier_block *this, unsigned long event,
+ case NETDEV_CHANGEADDR:
+ neigh_changeaddr(&nd_tbl, dev);
+ fib6_run_gc(0, net, false);
++ /* fallthrough */
++ case NETDEV_UP:
+ idev = in6_dev_get(dev);
+ if (!idev)
+ break;
+diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
+index f4034c4eadf7..400548d53a43 100644
+--- a/net/ipv6/sit.c
++++ b/net/ipv6/sit.c
+@@ -244,11 +244,13 @@ static struct ip_tunnel *ipip6_tunnel_locate(struct net *net,
+ if (!create)
+ goto failed;
+
+- if (parms->name[0])
++ if (parms->name[0]) {
++ if (!dev_valid_name(parms->name))
++ goto failed;
+ strlcpy(name, parms->name, IFNAMSIZ);
+- else
++ } else {
+ strcpy(name, "sit%d");
+-
++ }
+ dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN,
+ ipip6_tunnel_setup);
+ if (!dev)
+diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
+index 123f6f9f854c..8f9493b1bb1f 100644
+--- a/net/iucv/af_iucv.c
++++ b/net/iucv/af_iucv.c
+@@ -2382,9 +2382,11 @@ static int afiucv_iucv_init(void)
+ af_iucv_dev->driver = &af_iucv_driver;
+ err = device_register(af_iucv_dev);
+ if (err)
+- goto out_driver;
++ goto out_iucv_dev;
+ return 0;
+
++out_iucv_dev:
++ put_device(af_iucv_dev);
+ out_driver:
+ driver_unregister(&af_iucv_driver);
+ out_iucv:
+diff --git a/net/key/af_key.c b/net/key/af_key.c
+index 354c43a1c43d..fd4b5a0cb7ee 100644
+--- a/net/key/af_key.c
++++ b/net/key/af_key.c
+@@ -3301,7 +3301,7 @@ static struct xfrm_policy *pfkey_compile_policy(struct sock *sk, int opt,
+ p += pol->sadb_x_policy_len*8;
+ sec_ctx = (struct sadb_x_sec_ctx *)p;
+ if (len < pol->sadb_x_policy_len*8 +
+- sec_ctx->sadb_x_sec_len) {
++ sec_ctx->sadb_x_sec_len*8) {
+ *dir = -EINVAL;
+ goto out;
+ }
+diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
+index 0c4de8dd58bf..0b92ff822534 100644
+--- a/net/l2tp/l2tp_core.c
++++ b/net/l2tp/l2tp_core.c
+@@ -1521,9 +1521,14 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32
+ encap = cfg->encap;
+
+ /* Quick sanity checks */
++ err = -EPROTONOSUPPORT;
++ if (sk->sk_type != SOCK_DGRAM) {
++ pr_debug("tunl %hu: fd %d wrong socket type\n",
++ tunnel_id, fd);
++ goto err;
++ }
+ switch (encap) {
+ case L2TP_ENCAPTYPE_UDP:
+- err = -EPROTONOSUPPORT;
+ if (sk->sk_protocol != IPPROTO_UDP) {
+ pr_err("tunl %hu: fd %d wrong protocol, got %d, expected %d\n",
+ tunnel_id, fd, sk->sk_protocol, IPPROTO_UDP);
+@@ -1531,7 +1536,6 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32
+ }
+ break;
+ case L2TP_ENCAPTYPE_IP:
+- err = -EPROTONOSUPPORT;
+ if (sk->sk_protocol != IPPROTO_L2TP) {
+ pr_err("tunl %hu: fd %d wrong protocol, got %d, expected %d\n",
+ tunnel_id, fd, sk->sk_protocol, IPPROTO_L2TP);
+diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
+index 1e412ad6ced5..ad2b93aafcd5 100644
+--- a/net/l2tp/l2tp_netlink.c
++++ b/net/l2tp/l2tp_netlink.c
+@@ -725,6 +725,8 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 portid, u32 seq, int fl
+
+ if ((session->ifname[0] &&
+ nla_put_string(skb, L2TP_ATTR_IFNAME, session->ifname)) ||
++ (session->offset &&
++ nla_put_u16(skb, L2TP_ATTR_OFFSET, session->offset)) ||
+ (session->cookie_len &&
+ nla_put(skb, L2TP_ATTR_COOKIE, session->cookie_len,
+ &session->cookie[0])) ||
+diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
+index 2d4d2230f976..ac518cc76c3e 100644
+--- a/net/l2tp/l2tp_ppp.c
++++ b/net/l2tp/l2tp_ppp.c
+@@ -606,6 +606,13 @@ static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr,
+ lock_sock(sk);
+
+ error = -EINVAL;
++
++ if (sockaddr_len != sizeof(struct sockaddr_pppol2tp) &&
++ sockaddr_len != sizeof(struct sockaddr_pppol2tpv3) &&
++ sockaddr_len != sizeof(struct sockaddr_pppol2tpin6) &&
++ sockaddr_len != sizeof(struct sockaddr_pppol2tpv3in6))
++ goto end;
++
+ if (sp->sa_protocol != PX_PROTO_OL2TP)
+ goto end;
+
+diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
+index c58f242c00f1..f5d8cf1b96f3 100644
+--- a/net/llc/af_llc.c
++++ b/net/llc/af_llc.c
+@@ -197,9 +197,19 @@ static int llc_ui_release(struct socket *sock)
+ llc->laddr.lsap, llc->daddr.lsap);
+ if (!llc_send_disc(sk))
+ llc_ui_wait_for_disc(sk, sk->sk_rcvtimeo);
+- if (!sock_flag(sk, SOCK_ZAPPED))
++ if (!sock_flag(sk, SOCK_ZAPPED)) {
++ struct llc_sap *sap = llc->sap;
++
++ /* Hold this for release_sock(), so that llc_backlog_rcv()
++ * could still use it.
++ */
++ llc_sap_hold(sap);
+ llc_sap_remove_socket(llc->sap, sk);
+- release_sock(sk);
++ release_sock(sk);
++ llc_sap_put(sap);
++ } else {
++ release_sock(sk);
++ }
+ if (llc->dev)
+ dev_put(llc->dev);
+ sock_put(sk);
+@@ -309,6 +319,8 @@ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen)
+ int rc = -EINVAL;
+
+ dprintk("%s: binding %02X\n", __func__, addr->sllc_sap);
++
++ lock_sock(sk);
+ if (unlikely(!sock_flag(sk, SOCK_ZAPPED) || addrlen != sizeof(*addr)))
+ goto out;
+ rc = -EAFNOSUPPORT;
+@@ -380,6 +392,7 @@ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen)
+ out_put:
+ llc_sap_put(sap);
+ out:
++ release_sock(sk);
+ return rc;
+ }
+
+diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
+index 6e89ab8eac44..83aade477855 100644
+--- a/net/mac80211/iface.c
++++ b/net/mac80211/iface.c
+@@ -1418,7 +1418,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
+ break;
+ case NL80211_IFTYPE_UNSPECIFIED:
+ case NUM_NL80211_IFTYPES:
+- BUG();
++ WARN_ON(1);
+ break;
+ }
+
+diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
+index 844825829992..41d059ec04b4 100644
+--- a/net/mac80211/mlme.c
++++ b/net/mac80211/mlme.c
+@@ -4321,6 +4321,10 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
+ if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
+ return -EINVAL;
+
++ /* If a reconfig is happening, bail out */
++ if (local->in_reconfig)
++ return -EBUSY;
++
+ if (assoc) {
+ rcu_read_lock();
+ have_sta = sta_info_get(sdata, cbss->bssid);
+diff --git a/net/mac80211/status.c b/net/mac80211/status.c
+index 005fdbe39a8b..363c82b08d28 100644
+--- a/net/mac80211/status.c
++++ b/net/mac80211/status.c
+@@ -193,6 +193,7 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
+ }
+
+ if (ieee80211_is_action(mgmt->frame_control) &&
++ !ieee80211_has_protected(mgmt->frame_control) &&
+ mgmt->u.action.category == WLAN_CATEGORY_HT &&
+ mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS &&
+ ieee80211_sdata_running(sdata)) {
+diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
+index c0e64d15cf34..ee4dfecdc596 100644
+--- a/net/netfilter/nf_conntrack_netlink.c
++++ b/net/netfilter/nf_conntrack_netlink.c
+@@ -855,8 +855,13 @@ restart:
+ }
+ out:
+ local_bh_enable();
+- if (last)
++ if (last) {
++ /* nf ct hash resize happened, now clear the leftover. */
++ if ((struct nf_conn *)cb->args[1] == last)
++ cb->args[1] = 0;
++
+ nf_ct_put(last);
++ }
+
+ return skb->len;
+ }
+diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
+index 32d0437abdd8..86f7555a98d1 100644
+--- a/net/netfilter/nfnetlink_queue_core.c
++++ b/net/netfilter/nfnetlink_queue_core.c
+@@ -993,10 +993,8 @@ nfqnl_recv_verdict(struct sock *ctnl, struct sk_buff *skb,
+ struct net *net = sock_net(ctnl);
+ struct nfnl_queue_net *q = nfnl_queue_pernet(net);
+
+- queue = instance_lookup(q, queue_num);
+- if (!queue)
+- queue = verdict_instance_lookup(q, queue_num,
+- NETLINK_CB(skb).portid);
++ queue = verdict_instance_lookup(q, queue_num,
++ NETLINK_CB(skb).portid);
+ if (IS_ERR(queue))
+ return PTR_ERR(queue);
+
+diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
+index f4fcd9441561..48e36611a869 100644
+--- a/net/netfilter/x_tables.c
++++ b/net/netfilter/x_tables.c
+@@ -367,6 +367,36 @@ textify_hooks(char *buf, size_t size, unsigned int mask, uint8_t nfproto)
+ return buf;
+ }
+
++/**
++ * xt_check_proc_name - check that name is suitable for /proc file creation
++ *
++ * @name: file name candidate
++ * @size: length of buffer
++ *
++ * some x_tables modules wish to create a file in /proc.
++ * This function makes sure that the name is suitable for this
++ * purpose, it checks that name is NUL terminated and isn't a 'special'
++ * name, like "..".
++ *
++ * returns negative number on error or 0 if name is useable.
++ */
++int xt_check_proc_name(const char *name, unsigned int size)
++{
++ if (name[0] == '\0')
++ return -EINVAL;
++
++ if (strnlen(name, size) == size)
++ return -ENAMETOOLONG;
++
++ if (strcmp(name, ".") == 0 ||
++ strcmp(name, "..") == 0 ||
++ strchr(name, '/'))
++ return -EINVAL;
++
++ return 0;
++}
++EXPORT_SYMBOL(xt_check_proc_name);
++
+ int xt_check_match(struct xt_mtchk_param *par,
+ unsigned int size, u_int8_t proto, bool inv_proto)
+ {
+diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
+index 178696852bde..7381be0cdcdf 100644
+--- a/net/netfilter/xt_hashlimit.c
++++ b/net/netfilter/xt_hashlimit.c
+@@ -668,8 +668,9 @@ static int hashlimit_mt_check(const struct xt_mtchk_param *par)
+
+ if (info->cfg.gc_interval == 0 || info->cfg.expire == 0)
+ return -EINVAL;
+- if (info->name[sizeof(info->name)-1] != '\0')
+- return -EINVAL;
++ ret = xt_check_proc_name(info->name, sizeof(info->name));
++ if (ret)
++ return ret;
+ if (par->family == NFPROTO_IPV4) {
+ if (info->cfg.srcmask > 32 || info->cfg.dstmask > 32)
+ return -EINVAL;
+diff --git a/net/netfilter/xt_recent.c b/net/netfilter/xt_recent.c
+index 45e1b30e4fb2..f2780ee57163 100644
+--- a/net/netfilter/xt_recent.c
++++ b/net/netfilter/xt_recent.c
+@@ -364,9 +364,9 @@ static int recent_mt_check(const struct xt_mtchk_param *par,
+ info->hit_count, XT_RECENT_MAX_NSTAMPS - 1);
+ return -EINVAL;
+ }
+- if (info->name[0] == '\0' ||
+- strnlen(info->name, XT_RECENT_NAME_LEN) == XT_RECENT_NAME_LEN)
+- return -EINVAL;
++ ret = xt_check_proc_name(info->name, sizeof(info->name));
++ if (ret)
++ return ret;
+
+ if (ip_pkt_list_tot && info->hit_count < ip_pkt_list_tot)
+ nstamp_mask = roundup_pow_of_two(ip_pkt_list_tot) - 1;
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index 66c340bc0553..45ecf1f433ad 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -1635,6 +1635,9 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
+ if (addr->sa_family != AF_NETLINK)
+ return -EINVAL;
+
++ if (alen < sizeof(struct sockaddr_nl))
++ return -EINVAL;
++
+ if ((nladdr->nl_groups || nladdr->nl_pid) &&
+ !netlink_allowed(sock, NL_CFG_F_NONROOT_SEND))
+ return -EPERM;
+@@ -2385,6 +2388,8 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
+
+ if (msg->msg_namelen) {
+ err = -EINVAL;
++ if (msg->msg_namelen < sizeof(struct sockaddr_nl))
++ goto out;
+ if (addr->nl_family != AF_NETLINK)
+ goto out;
+ dst_portid = addr->nl_pid;
+diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
+index 97c22c818134..1c58b0326c54 100644
+--- a/net/netlink/genetlink.c
++++ b/net/netlink/genetlink.c
+@@ -1143,7 +1143,7 @@ static int genlmsg_mcast(struct sk_buff *skb, u32 portid, unsigned long group,
+ if (!err)
+ delivered = true;
+ else if (err != -ESRCH)
+- goto error;
++ return err;
+ return delivered ? 0 : -ESRCH;
+ error:
+ kfree_skb(skb);
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index 7f5d147aff63..b778a3460842 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -2652,6 +2652,7 @@ static int packet_release(struct socket *sock)
+
+ packet_flush_mclist(sk);
+
++ lock_sock(sk);
+ if (po->rx_ring.pg_vec) {
+ memset(&req_u, 0, sizeof(req_u));
+ packet_set_ring(sk, &req_u, 1, 0);
+@@ -2661,6 +2662,7 @@ static int packet_release(struct socket *sock)
+ memset(&req_u, 0, sizeof(req_u));
+ packet_set_ring(sk, &req_u, 1, 1);
+ }
++ release_sock(sk);
+
+ fanout_release(sk);
+
+@@ -3320,6 +3322,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
+ union tpacket_req_u req_u;
+ int len;
+
++ lock_sock(sk);
+ switch (po->tp_version) {
+ case TPACKET_V1:
+ case TPACKET_V2:
+@@ -3330,14 +3333,21 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
+ len = sizeof(req_u.req3);
+ break;
+ }
+- if (optlen < len)
+- return -EINVAL;
+- if (pkt_sk(sk)->has_vnet_hdr)
+- return -EINVAL;
+- if (copy_from_user(&req_u.req, optval, len))
+- return -EFAULT;
+- return packet_set_ring(sk, &req_u, 0,
+- optname == PACKET_TX_RING);
++ if (optlen < len) {
++ ret = -EINVAL;
++ } else {
++ if (pkt_sk(sk)->has_vnet_hdr) {
++ ret = -EINVAL;
++ } else {
++ if (copy_from_user(&req_u.req, optval, len))
++ ret = -EFAULT;
++ else
++ ret = packet_set_ring(sk, &req_u, 0,
++ optname == PACKET_TX_RING);
++ }
++ }
++ release_sock(sk);
++ return ret;
+ }
+ case PACKET_COPY_THRESH:
+ {
+@@ -3847,7 +3857,6 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
+ /* Added to avoid minimal code churn */
+ struct tpacket_req *req = &req_u->req;
+
+- lock_sock(sk);
+ /* Opening a Tx-ring is NOT supported in TPACKET_V3 */
+ if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) {
+ WARN(1, "Tx-ring is not supported.\n");
+@@ -3983,7 +3992,6 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
+ if (pg_vec)
+ free_pg_vec(pg_vec, order, req->tp_block_nr);
+ out:
+- release_sock(sk);
+ return err;
+ }
+
+diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c
+index f226709ebd8f..ca5f3662a485 100644
+--- a/net/rxrpc/rxkad.c
++++ b/net/rxrpc/rxkad.c
+@@ -209,7 +209,7 @@ static int rxkad_secure_packet_encrypt(const struct rxrpc_call *call,
+ struct sk_buff *trailer;
+ unsigned int len;
+ u16 check;
+- int nsg;
++ int nsg, err;
+
+ sp = rxrpc_skb(skb);
+
+@@ -240,7 +240,9 @@ static int rxkad_secure_packet_encrypt(const struct rxrpc_call *call,
+ len &= ~(call->conn->size_align - 1);
+
+ sg_init_table(sg, nsg);
+- skb_to_sgvec(skb, sg, 0, len);
++ err = skb_to_sgvec(skb, sg, 0, len);
++ if (unlikely(err < 0))
++ return err;
+ crypto_blkcipher_encrypt_iv(&desc, sg, sg, len);
+
+ _leave(" = 0");
+@@ -336,7 +338,7 @@ static int rxkad_verify_packet_auth(const struct rxrpc_call *call,
+ struct sk_buff *trailer;
+ u32 data_size, buf;
+ u16 check;
+- int nsg;
++ int nsg, ret;
+
+ _enter("");
+
+@@ -348,7 +350,9 @@ static int rxkad_verify_packet_auth(const struct rxrpc_call *call,
+ goto nomem;
+
+ sg_init_table(sg, nsg);
+- skb_to_sgvec(skb, sg, 0, 8);
++ ret = skb_to_sgvec(skb, sg, 0, 8);
++ if (unlikely(ret < 0))
++ return ret;
+
+ /* start the decryption afresh */
+ memset(&iv, 0, sizeof(iv));
+@@ -411,7 +415,7 @@ static int rxkad_verify_packet_encrypt(const struct rxrpc_call *call,
+ struct sk_buff *trailer;
+ u32 data_size, buf;
+ u16 check;
+- int nsg;
++ int nsg, ret;
+
+ _enter(",{%d}", skb->len);
+
+@@ -430,7 +434,12 @@ static int rxkad_verify_packet_encrypt(const struct rxrpc_call *call,
+ }
+
+ sg_init_table(sg, nsg);
+- skb_to_sgvec(skb, sg, 0, skb->len);
++ ret = skb_to_sgvec(skb, sg, 0, skb->len);
++ if (unlikely(ret < 0)) {
++ if (sg != _sg)
++ kfree(sg);
++ return ret;
++ }
+
+ /* decrypt from the session key */
+ token = call->conn->key->payload.data;
+diff --git a/net/sched/act_api.c b/net/sched/act_api.c
+index c9387f62f634..97dbf5775c47 100644
+--- a/net/sched/act_api.c
++++ b/net/sched/act_api.c
+@@ -93,8 +93,10 @@ static int tcf_dump_walker(struct sk_buff *skb, struct netlink_callback *cb,
+ a->order = n_i;
+
+ nest = nla_nest_start(skb, a->order);
+- if (nest == NULL)
++ if (nest == NULL) {
++ index--;
+ goto nla_put_failure;
++ }
+ err = tcf_action_dump_1(skb, a, 0, 0);
+ if (err < 0) {
+ index--;
+diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
+index 4cd5cf1aedf8..a40ed3d29988 100644
+--- a/net/sched/act_csum.c
++++ b/net/sched/act_csum.c
+@@ -176,6 +176,9 @@ static int tcf_csum_ipv4_tcp(struct sk_buff *skb,
+ struct tcphdr *tcph;
+ const struct iphdr *iph;
+
++ if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4)
++ return 1;
++
+ tcph = tcf_csum_skb_nextlayer(skb, ihl, ipl, sizeof(*tcph));
+ if (tcph == NULL)
+ return 0;
+@@ -197,6 +200,9 @@ static int tcf_csum_ipv6_tcp(struct sk_buff *skb,
+ struct tcphdr *tcph;
+ const struct ipv6hdr *ip6h;
+
++ if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6)
++ return 1;
++
+ tcph = tcf_csum_skb_nextlayer(skb, ihl, ipl, sizeof(*tcph));
+ if (tcph == NULL)
+ return 0;
+@@ -220,6 +226,9 @@ static int tcf_csum_ipv4_udp(struct sk_buff *skb,
+ const struct iphdr *iph;
+ u16 ul;
+
++ if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_UDP)
++ return 1;
++
+ /*
+ * Support both UDP and UDPLITE checksum algorithms, Don't use
+ * udph->len to get the real length without any protocol check,
+@@ -273,6 +282,9 @@ static int tcf_csum_ipv6_udp(struct sk_buff *skb,
+ const struct ipv6hdr *ip6h;
+ u16 ul;
+
++ if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_UDP)
++ return 1;
++
+ /*
+ * Support both UDP and UDPLITE checksum algorithms, Don't use
+ * udph->len to get the real length without any protocol check,
+diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
+index 00db4424faf1..7fee02981619 100644
+--- a/net/sctp/ipv6.c
++++ b/net/sctp/ipv6.c
+@@ -496,46 +496,49 @@ static void sctp_v6_to_addr(union sctp_addr *addr, struct in6_addr *saddr,
+ addr->v6.sin6_scope_id = 0;
+ }
+
+-/* Compare addresses exactly.
+- * v4-mapped-v6 is also in consideration.
+- */
+-static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
+- const union sctp_addr *addr2)
++static int __sctp_v6_cmp_addr(const union sctp_addr *addr1,
++ const union sctp_addr *addr2)
+ {
+ if (addr1->sa.sa_family != addr2->sa.sa_family) {
+ if (addr1->sa.sa_family == AF_INET &&
+ addr2->sa.sa_family == AF_INET6 &&
+- ipv6_addr_v4mapped(&addr2->v6.sin6_addr)) {
+- if (addr2->v6.sin6_port == addr1->v4.sin_port &&
+- addr2->v6.sin6_addr.s6_addr32[3] ==
+- addr1->v4.sin_addr.s_addr)
+- return 1;
+- }
++ ipv6_addr_v4mapped(&addr2->v6.sin6_addr) &&
++ addr2->v6.sin6_addr.s6_addr32[3] ==
++ addr1->v4.sin_addr.s_addr)
++ return 1;
++
+ if (addr2->sa.sa_family == AF_INET &&
+ addr1->sa.sa_family == AF_INET6 &&
+- ipv6_addr_v4mapped(&addr1->v6.sin6_addr)) {
+- if (addr1->v6.sin6_port == addr2->v4.sin_port &&
+- addr1->v6.sin6_addr.s6_addr32[3] ==
+- addr2->v4.sin_addr.s_addr)
+- return 1;
+- }
++ ipv6_addr_v4mapped(&addr1->v6.sin6_addr) &&
++ addr1->v6.sin6_addr.s6_addr32[3] ==
++ addr2->v4.sin_addr.s_addr)
++ return 1;
++
+ return 0;
+ }
+- if (addr1->v6.sin6_port != addr2->v6.sin6_port)
+- return 0;
++
+ if (!ipv6_addr_equal(&addr1->v6.sin6_addr, &addr2->v6.sin6_addr))
+ return 0;
++
+ /* If this is a linklocal address, compare the scope_id. */
+- if (ipv6_addr_type(&addr1->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL) {
+- if (addr1->v6.sin6_scope_id && addr2->v6.sin6_scope_id &&
+- (addr1->v6.sin6_scope_id != addr2->v6.sin6_scope_id)) {
+- return 0;
+- }
+- }
++ if ((ipv6_addr_type(&addr1->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL) &&
++ addr1->v6.sin6_scope_id && addr2->v6.sin6_scope_id &&
++ addr1->v6.sin6_scope_id != addr2->v6.sin6_scope_id)
++ return 0;
+
+ return 1;
+ }
+
++/* Compare addresses exactly.
++ * v4-mapped-v6 is also in consideration.
++ */
++static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
++ const union sctp_addr *addr2)
++{
++ return __sctp_v6_cmp_addr(addr1, addr2) &&
++ addr1->v6.sin6_port == addr2->v6.sin6_port;
++}
++
+ /* Initialize addr struct to INADDR_ANY. */
+ static void sctp_v6_inaddr_any(union sctp_addr *addr, __be16 port)
+ {
+@@ -700,8 +703,10 @@ static int sctp_v6_addr_to_user(struct sctp_sock *sp, union sctp_addr *addr)
+ sctp_v6_map_v4(addr);
+ }
+
+- if (addr->sa.sa_family == AF_INET)
++ if (addr->sa.sa_family == AF_INET) {
++ memset(addr->v4.sin_zero, 0, sizeof(addr->v4.sin_zero));
+ return sizeof(struct sockaddr_in);
++ }
+ return sizeof(struct sockaddr_in6);
+ }
+
+@@ -818,8 +823,8 @@ static int sctp_inet6_cmp_addr(const union sctp_addr *addr1,
+ const union sctp_addr *addr2,
+ struct sctp_sock *opt)
+ {
+- struct sctp_af *af1, *af2;
+ struct sock *sk = sctp_opt2sk(opt);
++ struct sctp_af *af1, *af2;
+
+ af1 = sctp_get_af_specific(addr1->sa.sa_family);
+ af2 = sctp_get_af_specific(addr2->sa.sa_family);
+@@ -835,10 +840,7 @@ static int sctp_inet6_cmp_addr(const union sctp_addr *addr1,
+ if (sctp_is_any(sk, addr1) || sctp_is_any(sk, addr2))
+ return 1;
+
+- if (addr1->sa.sa_family != addr2->sa.sa_family)
+- return 0;
+-
+- return af1->cmp_addr(addr1, addr2);
++ return __sctp_v6_cmp_addr(addr1, addr2);
+ }
+
+ /* Verify that the provided sockaddr looks bindable. Common verification,
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index 195b54a19f1e..25127a0aeb3c 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -335,11 +335,14 @@ static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
+ if (!opt->pf->af_supported(addr->sa.sa_family, opt))
+ return NULL;
+
+- /* V4 mapped address are really of AF_INET family */
+- if (addr->sa.sa_family == AF_INET6 &&
+- ipv6_addr_v4mapped(&addr->v6.sin6_addr) &&
+- !opt->pf->af_supported(AF_INET, opt))
+- return NULL;
++ if (addr->sa.sa_family == AF_INET6) {
++ if (len < SIN6_LEN_RFC2133)
++ return NULL;
++ /* V4 mapped address are really of AF_INET family */
++ if (ipv6_addr_v4mapped(&addr->v6.sin6_addr) &&
++ !opt->pf->af_supported(AF_INET, opt))
++ return NULL;
++ }
+
+ /* If we get this far, af is valid. */
+ af = sctp_get_af_specific(addr->sa.sa_family);
+@@ -1512,7 +1515,7 @@ static void sctp_close(struct sock *sk, long timeout)
+
+ pr_debug("%s: sk:%p, timeout:%ld\n", __func__, sk, timeout);
+
+- lock_sock(sk);
++ lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
+ sk->sk_shutdown = SHUTDOWN_MASK;
+ sk->sk_state = SCTP_SS_CLOSING;
+
+@@ -1563,7 +1566,7 @@ static void sctp_close(struct sock *sk, long timeout)
+ * held and that should be grabbed before socket lock.
+ */
+ spin_lock_bh(&net->sctp.addr_wq_lock);
+- bh_lock_sock(sk);
++ bh_lock_sock_nested(sk);
+
+ /* Hold the sock, since sk_common_release() will put sock_put()
+ * and we have just a little more cleanup.
+diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
+index d81186d34558..9103dd15511c 100644
+--- a/net/sunrpc/rpc_pipe.c
++++ b/net/sunrpc/rpc_pipe.c
+@@ -1375,6 +1375,7 @@ rpc_gssd_dummy_depopulate(struct dentry *pipe_dentry)
+ struct dentry *clnt_dir = pipe_dentry->d_parent;
+ struct dentry *gssd_dir = clnt_dir->d_parent;
+
++ dget(pipe_dentry);
+ __rpc_rmpipe(d_inode(clnt_dir), pipe_dentry);
+ __rpc_depopulate(clnt_dir, gssd_dummy_info_file, 0, 1);
+ __rpc_depopulate(gssd_dir, gssd_dummy_clnt_dir, 0, 1);
+diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
+index 14972988d29d..3721a6422610 100644
+--- a/net/sunrpc/xprtsock.c
++++ b/net/sunrpc/xprtsock.c
+@@ -2192,7 +2192,12 @@ static void xs_tcp_setup_socket(struct work_struct *work)
+ case -EHOSTUNREACH:
+ case -EADDRINUSE:
+ case -ENOBUFS:
+- /* retry with existing socket, after a delay */
++ /*
++ * xs_tcp_force_close() wakes tasks with -EIO.
++ * We need to wake them first to ensure the
++ * correct error code.
++ */
++ xprt_wake_pending_tasks(xprt, status);
+ xs_tcp_force_close(xprt);
+ goto out;
+ }
+diff --git a/net/tipc/net.c b/net/tipc/net.c
+index a54f3cbe2246..64ead4f47b70 100644
+--- a/net/tipc/net.c
++++ b/net/tipc/net.c
+@@ -43,7 +43,8 @@
+
+ static const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = {
+ [TIPC_NLA_NET_UNSPEC] = { .type = NLA_UNSPEC },
+- [TIPC_NLA_NET_ID] = { .type = NLA_U32 }
++ [TIPC_NLA_NET_ID] = { .type = NLA_U32 },
++ [TIPC_NLA_NET_ADDR] = { .type = NLA_U32 },
+ };
+
+ /*
+diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
+index c3ab230e4493..a9072fb5c767 100644
+--- a/net/x25/af_x25.c
++++ b/net/x25/af_x25.c
+@@ -1794,32 +1794,40 @@ void x25_kill_by_neigh(struct x25_neigh *nb)
+
+ static int __init x25_init(void)
+ {
+- int rc = proto_register(&x25_proto, 0);
++ int rc;
+
+- if (rc != 0)
++ rc = proto_register(&x25_proto, 0);
++ if (rc)
+ goto out;
+
+ rc = sock_register(&x25_family_ops);
+- if (rc != 0)
++ if (rc)
+ goto out_proto;
+
+ dev_add_pack(&x25_packet_type);
+
+ rc = register_netdevice_notifier(&x25_dev_notifier);
+- if (rc != 0)
++ if (rc)
+ goto out_sock;
+
+- pr_info("Linux Version 0.2\n");
++ rc = x25_register_sysctl();
++ if (rc)
++ goto out_dev;
+
+- x25_register_sysctl();
+ rc = x25_proc_init();
+- if (rc != 0)
+- goto out_dev;
++ if (rc)
++ goto out_sysctl;
++
++ pr_info("Linux Version 0.2\n");
++
+ out:
+ return rc;
++out_sysctl:
++ x25_unregister_sysctl();
+ out_dev:
+ unregister_netdevice_notifier(&x25_dev_notifier);
+ out_sock:
++ dev_remove_pack(&x25_packet_type);
+ sock_unregister(AF_X25);
+ out_proto:
+ proto_unregister(&x25_proto);
+diff --git a/net/x25/sysctl_net_x25.c b/net/x25/sysctl_net_x25.c
+index 43239527a205..703d46aae7a2 100644
+--- a/net/x25/sysctl_net_x25.c
++++ b/net/x25/sysctl_net_x25.c
+@@ -73,9 +73,12 @@ static struct ctl_table x25_table[] = {
+ { 0, },
+ };
+
+-void __init x25_register_sysctl(void)
++int __init x25_register_sysctl(void)
+ {
+ x25_table_header = register_net_sysctl(&init_net, "net/x25", x25_table);
++ if (!x25_table_header)
++ return -ENOMEM;
++ return 0;
+ }
+
+ void x25_unregister_sysctl(void)
+diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c
+index ccfdc7115a83..a00ec715aa46 100644
+--- a/net/xfrm/xfrm_ipcomp.c
++++ b/net/xfrm/xfrm_ipcomp.c
+@@ -283,7 +283,7 @@ static struct crypto_comp * __percpu *ipcomp_alloc_tfms(const char *alg_name)
+ struct crypto_comp *tfm;
+
+ /* This can be any valid CPU ID so we don't need locking. */
+- tfm = __this_cpu_read(*pos->tfms);
++ tfm = this_cpu_read(*pos->tfms);
+
+ if (!strcmp(crypto_comp_name(tfm), alg_name)) {
+ pos->users++;
+diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
+index 7306683a7207..94b522fc231e 100644
+--- a/net/xfrm/xfrm_policy.c
++++ b/net/xfrm/xfrm_policy.c
+@@ -1299,7 +1299,7 @@ EXPORT_SYMBOL(xfrm_policy_delete);
+
+ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
+ {
+- struct net *net = xp_net(pol);
++ struct net *net = sock_net(sk);
+ struct xfrm_policy *old_pol;
+
+ #ifdef CONFIG_XFRM_SUB_POLICY
+diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
+index 96688cd0f6f1..733e8028f54f 100644
+--- a/net/xfrm/xfrm_state.c
++++ b/net/xfrm/xfrm_state.c
+@@ -1208,6 +1208,8 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig)
+ x->curlft.add_time = orig->curlft.add_time;
+ x->km.state = orig->km.state;
+ x->km.seq = orig->km.seq;
++ x->replay = orig->replay;
++ x->preplay = orig->preplay;
+
+ return x;
+
+@@ -1845,6 +1847,18 @@ int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen
+ struct xfrm_mgr *km;
+ struct xfrm_policy *pol = NULL;
+
++#ifdef CONFIG_COMPAT
++ if (is_compat_task())
++ return -EOPNOTSUPP;
++#endif
++
++ if (!optval && !optlen) {
++ xfrm_sk_policy_insert(sk, XFRM_POLICY_IN, NULL);
++ xfrm_sk_policy_insert(sk, XFRM_POLICY_OUT, NULL);
++ __sk_dst_reset(sk);
++ return 0;
++ }
++
+ if (optlen <= 0 || optlen > PAGE_SIZE)
+ return -EMSGSIZE;
+
+diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
+index 84541b35629a..0f6285f9674e 100644
+--- a/net/xfrm/xfrm_user.c
++++ b/net/xfrm/xfrm_user.c
+@@ -120,22 +120,17 @@ static inline int verify_replay(struct xfrm_usersa_info *p,
+ struct nlattr *rt = attrs[XFRMA_REPLAY_ESN_VAL];
+ struct xfrm_replay_state_esn *rs;
+
+- if (p->flags & XFRM_STATE_ESN) {
+- if (!rt)
+- return -EINVAL;
++ if (!rt)
++ return (p->flags & XFRM_STATE_ESN) ? -EINVAL : 0;
+
+- rs = nla_data(rt);
++ rs = nla_data(rt);
+
+- if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
+- return -EINVAL;
+-
+- if (nla_len(rt) < xfrm_replay_state_esn_len(rs) &&
+- nla_len(rt) != sizeof(*rs))
+- return -EINVAL;
+- }
++ if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
++ return -EINVAL;
+
+- if (!rt)
+- return 0;
++ if (nla_len(rt) < xfrm_replay_state_esn_len(rs) &&
++ nla_len(rt) != sizeof(*rs))
++ return -EINVAL;
+
+ /* As only ESP and AH support ESN feature. */
+ if ((p->id.proto != IPPROTO_ESP) && (p->id.proto != IPPROTO_AH))
+@@ -2460,7 +2455,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
+
+ #ifdef CONFIG_COMPAT
+ if (is_compat_task())
+- return -ENOTSUPP;
++ return -EOPNOTSUPP;
+ #endif
+
+ type = nlh->nlmsg_type;
+diff --git a/scripts/tags.sh b/scripts/tags.sh
+index cdb491d84503..7056322b53f0 100755
+--- a/scripts/tags.sh
++++ b/scripts/tags.sh
+@@ -106,6 +106,7 @@ all_compiled_sources()
+ case "$i" in
+ *.[cS])
+ j=${i/\.[cS]/\.o}
++ j="${j#$tree}"
+ if [ -e $j ]; then
+ echo $i
+ fi
+diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
+index e5f1561439db..b7e269317e0c 100644
+--- a/security/apparmor/lsm.c
++++ b/security/apparmor/lsm.c
+@@ -735,7 +735,7 @@ module_param_named(logsyscall, aa_g_logsyscall, aabool, S_IRUSR | S_IWUSR);
+
+ /* Maximum pathname length before accesses will start getting rejected */
+ unsigned int aa_g_path_max = 2 * PATH_MAX;
+-module_param_named(path_max, aa_g_path_max, aauint, S_IRUSR | S_IWUSR);
++module_param_named(path_max, aa_g_path_max, aauint, S_IRUSR);
+
+ /* Determines how paranoid loading of policy is and how much verification
+ * on the loaded policy is done.
+diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
+index 9ee9139b0b07..7f8c0322548c 100644
+--- a/security/integrity/ima/ima_appraise.c
++++ b/security/integrity/ima/ima_appraise.c
+@@ -206,7 +206,8 @@ int ima_appraise_measurement(int func, struct integrity_iint_cache *iint,
+ if (opened & FILE_CREATED)
+ iint->flags |= IMA_NEW_FILE;
+ if ((iint->flags & IMA_NEW_FILE) &&
+- !(iint->flags & IMA_DIGSIG_REQUIRED))
++ (!(iint->flags & IMA_DIGSIG_REQUIRED) ||
++ (inode->i_size == 0)))
+ status = INTEGRITY_PASS;
+ goto out;
+ }
+diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
+index 0034eb420b0e..de1e43f6adf1 100644
+--- a/security/selinux/hooks.c
++++ b/security/selinux/hooks.c
+@@ -321,18 +321,6 @@ static void superblock_free_security(struct super_block *sb)
+ kfree(sbsec);
+ }
+
+-/* The file system's label must be initialized prior to use. */
+-
+-static const char *labeling_behaviors[7] = {
+- "uses xattr",
+- "uses transition SIDs",
+- "uses task SIDs",
+- "uses genfs_contexts",
+- "not configured for labeling",
+- "uses mountpoint labeling",
+- "uses native labeling",
+-};
+-
+ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dentry);
+
+ static inline int inode_doinit(struct inode *inode)
+@@ -444,10 +432,6 @@ static int sb_finish_set_opts(struct super_block *sb)
+ }
+ }
+
+- if (sbsec->behavior > ARRAY_SIZE(labeling_behaviors))
+- printk(KERN_ERR "SELinux: initialized (dev %s, type %s), unknown behavior\n",
+- sb->s_id, sb->s_type->name);
+-
+ sbsec->flags |= SE_SBINITIALIZED;
+ if (selinux_is_sblabel_mnt(sb))
+ sbsec->flags |= SBLABEL_MNT;
+@@ -4106,10 +4090,18 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
+ u32 sid, node_perm;
+
+ if (family == PF_INET) {
++ if (addrlen < sizeof(struct sockaddr_in)) {
++ err = -EINVAL;
++ goto out;
++ }
+ addr4 = (struct sockaddr_in *)address;
+ snum = ntohs(addr4->sin_port);
+ addrp = (char *)&addr4->sin_addr.s_addr;
+ } else {
++ if (addrlen < SIN6_LEN_RFC2133) {
++ err = -EINVAL;
++ goto out;
++ }
+ addr6 = (struct sockaddr_in6 *)address;
+ snum = ntohs(addr6->sin6_port);
+ addrp = (char *)&addr6->sin6_addr.s6_addr;
+diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
+index 31d1d2ebd6f2..f20b2b0a2a54 100644
+--- a/security/selinux/ss/services.c
++++ b/security/selinux/ss/services.c
+@@ -154,7 +154,7 @@ static int selinux_set_mapping(struct policydb *pol,
+ }
+
+ k = 0;
+- while (p_in->perms && p_in->perms[k]) {
++ while (p_in->perms[k]) {
+ /* An empty permission string skips ahead */
+ if (!*p_in->perms[k]) {
+ k++;
+diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
+index 494b7b533366..7b2719acbeba 100644
+--- a/sound/core/oss/pcm_oss.c
++++ b/sound/core/oss/pcm_oss.c
+@@ -833,8 +833,25 @@ static int choose_rate(struct snd_pcm_substream *substream,
+ return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
+ }
+
+-static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
+- bool trylock)
++/* parameter locking: returns immediately if tried during streaming */
++static int lock_params(struct snd_pcm_runtime *runtime)
++{
++ if (mutex_lock_interruptible(&runtime->oss.params_lock))
++ return -ERESTARTSYS;
++ if (atomic_read(&runtime->oss.rw_ref)) {
++ mutex_unlock(&runtime->oss.params_lock);
++ return -EBUSY;
++ }
++ return 0;
++}
++
++static void unlock_params(struct snd_pcm_runtime *runtime)
++{
++ mutex_unlock(&runtime->oss.params_lock);
++}
++
++/* call with params_lock held */
++static int snd_pcm_oss_change_params_locked(struct snd_pcm_substream *substream)
+ {
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_pcm_hw_params *params, *sparams;
+@@ -848,12 +865,9 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
+ struct snd_mask sformat_mask;
+ struct snd_mask mask;
+
+- if (trylock) {
+- if (!(mutex_trylock(&runtime->oss.params_lock)))
+- return -EAGAIN;
+- } else if (mutex_lock_interruptible(&runtime->oss.params_lock))
+- return -EINTR;
+- sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
++ if (!runtime->oss.params)
++ return 0;
++ sw_params = kzalloc(sizeof(*sw_params), GFP_KERNEL);
+ params = kmalloc(sizeof(*params), GFP_KERNEL);
+ sparams = kmalloc(sizeof(*sparams), GFP_KERNEL);
+ if (!sw_params || !params || !sparams) {
+@@ -991,7 +1005,6 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
+ goto failure;
+ }
+
+- memset(sw_params, 0, sizeof(*sw_params));
+ if (runtime->oss.trigger) {
+ sw_params->start_threshold = 1;
+ } else {
+@@ -1079,6 +1092,23 @@ failure:
+ kfree(sw_params);
+ kfree(params);
+ kfree(sparams);
++ return err;
++}
++
++/* this one takes the lock by itself */
++static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
++ bool trylock)
++{
++ struct snd_pcm_runtime *runtime = substream->runtime;
++ int err;
++
++ if (trylock) {
++ if (!(mutex_trylock(&runtime->oss.params_lock)))
++ return -EAGAIN;
++ } else if (mutex_lock_interruptible(&runtime->oss.params_lock))
++ return -ERESTARTSYS;
++
++ err = snd_pcm_oss_change_params_locked(substream);
+ mutex_unlock(&runtime->oss.params_lock);
+ return err;
+ }
+@@ -1107,6 +1137,10 @@ static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_fil
+ return 0;
+ }
+
++/* call with params_lock held */
++/* NOTE: this always call PREPARE unconditionally no matter whether
++ * runtime->oss.prepare is set or not
++ */
+ static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
+ {
+ int err;
+@@ -1131,14 +1165,35 @@ static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
+ struct snd_pcm_runtime *runtime;
+ int err;
+
+- if (substream == NULL)
+- return 0;
+ runtime = substream->runtime;
+ if (runtime->oss.params) {
+ err = snd_pcm_oss_change_params(substream, false);
+ if (err < 0)
+ return err;
+ }
++ if (runtime->oss.prepare) {
++ if (mutex_lock_interruptible(&runtime->oss.params_lock))
++ return -ERESTARTSYS;
++ err = snd_pcm_oss_prepare(substream);
++ mutex_unlock(&runtime->oss.params_lock);
++ if (err < 0)
++ return err;
++ }
++ return 0;
++}
++
++/* call with params_lock held */
++static int snd_pcm_oss_make_ready_locked(struct snd_pcm_substream *substream)
++{
++ struct snd_pcm_runtime *runtime;
++ int err;
++
++ runtime = substream->runtime;
++ if (runtime->oss.params) {
++ err = snd_pcm_oss_change_params_locked(substream);
++ if (err < 0)
++ return err;
++ }
+ if (runtime->oss.prepare) {
+ err = snd_pcm_oss_prepare(substream);
+ if (err < 0)
+@@ -1367,13 +1422,15 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
+ if (atomic_read(&substream->mmap_count))
+ return -ENXIO;
+
+- if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
+- return tmp;
++ atomic_inc(&runtime->oss.rw_ref);
+ while (bytes > 0) {
+ if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
+ tmp = -ERESTARTSYS;
+ break;
+ }
++ tmp = snd_pcm_oss_make_ready_locked(substream);
++ if (tmp < 0)
++ goto err;
+ if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
+ tmp = bytes;
+ if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
+@@ -1429,6 +1486,7 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
+ }
+ tmp = 0;
+ }
++ atomic_dec(&runtime->oss.rw_ref);
+ return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
+ }
+
+@@ -1474,13 +1532,15 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
+ if (atomic_read(&substream->mmap_count))
+ return -ENXIO;
+
+- if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
+- return tmp;
++ atomic_inc(&runtime->oss.rw_ref);
+ while (bytes > 0) {
+ if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
+ tmp = -ERESTARTSYS;
+ break;
+ }
++ tmp = snd_pcm_oss_make_ready_locked(substream);
++ if (tmp < 0)
++ goto err;
+ if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
+ if (runtime->oss.buffer_used == 0) {
+ tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
+@@ -1521,6 +1581,7 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
+ }
+ tmp = 0;
+ }
++ atomic_dec(&runtime->oss.rw_ref);
+ return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
+ }
+
+@@ -1536,10 +1597,12 @@ static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file)
+ continue;
+ runtime = substream->runtime;
+ snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
++ mutex_lock(&runtime->oss.params_lock);
+ runtime->oss.prepare = 1;
+ runtime->oss.buffer_used = 0;
+ runtime->oss.prev_hw_ptr_period = 0;
+ runtime->oss.period_ptr = 0;
++ mutex_unlock(&runtime->oss.params_lock);
+ }
+ return 0;
+ }
+@@ -1625,9 +1688,13 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
+ goto __direct;
+ if ((err = snd_pcm_oss_make_ready(substream)) < 0)
+ return err;
++ atomic_inc(&runtime->oss.rw_ref);
++ if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
++ atomic_dec(&runtime->oss.rw_ref);
++ return -ERESTARTSYS;
++ }
+ format = snd_pcm_oss_format_from(runtime->oss.format);
+ width = snd_pcm_format_physical_width(format);
+- mutex_lock(&runtime->oss.params_lock);
+ if (runtime->oss.buffer_used > 0) {
+ #ifdef OSS_DEBUG
+ pcm_dbg(substream->pcm, "sync: buffer_used\n");
+@@ -1637,10 +1704,8 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
+ runtime->oss.buffer + runtime->oss.buffer_used,
+ size);
+ err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes);
+- if (err < 0) {
+- mutex_unlock(&runtime->oss.params_lock);
+- return err;
+- }
++ if (err < 0)
++ goto unlock;
+ } else if (runtime->oss.period_ptr > 0) {
+ #ifdef OSS_DEBUG
+ pcm_dbg(substream->pcm, "sync: period_ptr\n");
+@@ -1650,10 +1715,8 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
+ runtime->oss.buffer,
+ size * 8 / width);
+ err = snd_pcm_oss_sync1(substream, size);
+- if (err < 0) {
+- mutex_unlock(&runtime->oss.params_lock);
+- return err;
+- }
++ if (err < 0)
++ goto unlock;
+ }
+ /*
+ * The ALSA's period might be a bit large than OSS one.
+@@ -1684,7 +1747,11 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
+ snd_pcm_lib_writev(substream, buffers, size);
+ }
+ }
++unlock:
+ mutex_unlock(&runtime->oss.params_lock);
++ atomic_dec(&runtime->oss.rw_ref);
++ if (err < 0)
++ return err;
+ /*
+ * finish sync: drain the buffer
+ */
+@@ -1695,7 +1762,9 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
+ substream->f_flags = saved_f_flags;
+ if (err < 0)
+ return err;
++ mutex_lock(&runtime->oss.params_lock);
+ runtime->oss.prepare = 1;
++ mutex_unlock(&runtime->oss.params_lock);
+ }
+
+ substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
+@@ -1706,8 +1775,10 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
+ err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
+ if (err < 0)
+ return err;
++ mutex_lock(&runtime->oss.params_lock);
+ runtime->oss.buffer_used = 0;
+ runtime->oss.prepare = 1;
++ mutex_unlock(&runtime->oss.params_lock);
+ }
+ return 0;
+ }
+@@ -1719,6 +1790,8 @@ static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
+ for (idx = 1; idx >= 0; --idx) {
+ struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+ struct snd_pcm_runtime *runtime;
++ int err;
++
+ if (substream == NULL)
+ continue;
+ runtime = substream->runtime;
+@@ -1726,10 +1799,14 @@ static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
+ rate = 1000;
+ else if (rate > 192000)
+ rate = 192000;
++ err = lock_params(runtime);
++ if (err < 0)
++ return err;
+ if (runtime->oss.rate != rate) {
+ runtime->oss.params = 1;
+ runtime->oss.rate = rate;
+ }
++ unlock_params(runtime);
+ }
+ return snd_pcm_oss_get_rate(pcm_oss_file);
+ }
+@@ -1754,13 +1831,19 @@ static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsig
+ for (idx = 1; idx >= 0; --idx) {
+ struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+ struct snd_pcm_runtime *runtime;
++ int err;
++
+ if (substream == NULL)
+ continue;
+ runtime = substream->runtime;
++ err = lock_params(runtime);
++ if (err < 0)
++ return err;
+ if (runtime->oss.channels != channels) {
+ runtime->oss.params = 1;
+ runtime->oss.channels = channels;
+ }
++ unlock_params(runtime);
+ }
+ return snd_pcm_oss_get_channels(pcm_oss_file);
+ }
+@@ -1814,10 +1897,9 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
+ return -ENOMEM;
+ _snd_pcm_hw_params_any(params);
+ err = snd_pcm_hw_refine(substream, params);
+- format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+- kfree(params);
+ if (err < 0)
+- return err;
++ goto error;
++ format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ for (fmt = 0; fmt < 32; ++fmt) {
+ if (snd_mask_test(&format_mask, fmt)) {
+ int f = snd_pcm_oss_format_to(fmt);
+@@ -1825,12 +1907,16 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
+ formats |= f;
+ }
+ }
+- return formats;
++
++ error:
++ kfree(params);
++ return err < 0 ? err : formats;
+ }
+
+ static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
+ {
+ int formats, idx;
++ int err;
+
+ if (format != AFMT_QUERY) {
+ formats = snd_pcm_oss_get_formats(pcm_oss_file);
+@@ -1844,10 +1930,14 @@ static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int for
+ if (substream == NULL)
+ continue;
+ runtime = substream->runtime;
++ err = lock_params(runtime);
++ if (err < 0)
++ return err;
+ if (runtime->oss.format != format) {
+ runtime->oss.params = 1;
+ runtime->oss.format = format;
+ }
++ unlock_params(runtime);
+ }
+ }
+ return snd_pcm_oss_get_format(pcm_oss_file);
+@@ -1867,8 +1957,6 @@ static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int s
+ {
+ struct snd_pcm_runtime *runtime;
+
+- if (substream == NULL)
+- return 0;
+ runtime = substream->runtime;
+ if (subdivide == 0) {
+ subdivide = runtime->oss.subdivision;
+@@ -1892,9 +1980,17 @@ static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int
+
+ for (idx = 1; idx >= 0; --idx) {
+ struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
++ struct snd_pcm_runtime *runtime;
++
+ if (substream == NULL)
+ continue;
+- if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0)
++ runtime = substream->runtime;
++ err = lock_params(runtime);
++ if (err < 0)
++ return err;
++ err = snd_pcm_oss_set_subdivide1(substream, subdivide);
++ unlock_params(runtime);
++ if (err < 0)
+ return err;
+ }
+ return err;
+@@ -1904,8 +2000,6 @@ static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsign
+ {
+ struct snd_pcm_runtime *runtime;
+
+- if (substream == NULL)
+- return 0;
+ runtime = substream->runtime;
+ if (runtime->oss.subdivision || runtime->oss.fragshift)
+ return -EINVAL;
+@@ -1925,9 +2019,17 @@ static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsig
+
+ for (idx = 1; idx >= 0; --idx) {
+ struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
++ struct snd_pcm_runtime *runtime;
++
+ if (substream == NULL)
+ continue;
+- if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0)
++ runtime = substream->runtime;
++ err = lock_params(runtime);
++ if (err < 0)
++ return err;
++ err = snd_pcm_oss_set_fragment1(substream, val);
++ unlock_params(runtime);
++ if (err < 0)
+ return err;
+ }
+ return err;
+@@ -2011,6 +2113,9 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
+ }
+ if (psubstream) {
+ runtime = psubstream->runtime;
++ cmd = 0;
++ if (mutex_lock_interruptible(&runtime->oss.params_lock))
++ return -ERESTARTSYS;
+ if (trigger & PCM_ENABLE_OUTPUT) {
+ if (runtime->oss.trigger)
+ goto _skip1;
+@@ -2028,13 +2133,19 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
+ cmd = SNDRV_PCM_IOCTL_DROP;
+ runtime->oss.prepare = 1;
+ }
+- err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
+- if (err < 0)
+- return err;
+- }
+ _skip1:
++ mutex_unlock(&runtime->oss.params_lock);
++ if (cmd) {
++ err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
++ if (err < 0)
++ return err;
++ }
++ }
+ if (csubstream) {
+ runtime = csubstream->runtime;
++ cmd = 0;
++ if (mutex_lock_interruptible(&runtime->oss.params_lock))
++ return -ERESTARTSYS;
+ if (trigger & PCM_ENABLE_INPUT) {
+ if (runtime->oss.trigger)
+ goto _skip2;
+@@ -2049,11 +2160,14 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
+ cmd = SNDRV_PCM_IOCTL_DROP;
+ runtime->oss.prepare = 1;
+ }
+- err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
+- if (err < 0)
+- return err;
+- }
+ _skip2:
++ mutex_unlock(&runtime->oss.params_lock);
++ if (cmd) {
++ err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
++ if (err < 0)
++ return err;
++ }
++ }
+ return 0;
+ }
+
+@@ -2305,6 +2419,7 @@ static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
+ runtime->oss.maxfrags = 0;
+ runtime->oss.subdivision = 0;
+ substream->pcm_release = snd_pcm_oss_release_substream;
++ atomic_set(&runtime->oss.rw_ref, 0);
+ }
+
+ static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file)
+diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c
+index 1f64ab0c2a95..7ae080bae15c 100644
+--- a/sound/core/pcm_compat.c
++++ b/sound/core/pcm_compat.c
+@@ -426,6 +426,8 @@ static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
+ return -ENOTTY;
+ if (substream->stream != dir)
+ return -EINVAL;
++ if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
++ return -EBADFD;
+
+ if ((ch = substream->runtime->channels) > 128)
+ return -EINVAL;
+diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
+index aa999e747c94..889087808ebe 100644
+--- a/sound/core/pcm_native.c
++++ b/sound/core/pcm_native.c
+@@ -2729,6 +2729,7 @@ static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream,
+ sync_ptr.s.status.hw_ptr = status->hw_ptr;
+ sync_ptr.s.status.tstamp = status->tstamp;
+ sync_ptr.s.status.suspended_state = status->suspended_state;
++ sync_ptr.s.status.audio_tstamp = status->audio_tstamp;
+ snd_pcm_stream_unlock_irq(substream);
+ if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr)))
+ return -EFAULT;
+@@ -3410,7 +3411,7 @@ int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
+ area,
+ substream->runtime->dma_area,
+ substream->runtime->dma_addr,
+- area->vm_end - area->vm_start);
++ substream->runtime->dma_bytes);
+ #endif /* CONFIG_X86 */
+ /* mmap with fault handler */
+ area->vm_ops = &snd_pcm_vm_ops_data_fault;
+diff --git a/sound/core/rawmidi_compat.c b/sound/core/rawmidi_compat.c
+index 09a89094dcf7..4e304a24924a 100644
+--- a/sound/core/rawmidi_compat.c
++++ b/sound/core/rawmidi_compat.c
+@@ -36,8 +36,6 @@ static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile,
+ struct snd_rawmidi_params params;
+ unsigned int val;
+
+- if (rfile->output == NULL)
+- return -EINVAL;
+ if (get_user(params.stream, &src->stream) ||
+ get_user(params.buffer_size, &src->buffer_size) ||
+ get_user(params.avail_min, &src->avail_min) ||
+@@ -46,8 +44,12 @@ static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile,
+ params.no_active_sensing = val;
+ switch (params.stream) {
+ case SNDRV_RAWMIDI_STREAM_OUTPUT:
++ if (!rfile->output)
++ return -EINVAL;
+ return snd_rawmidi_output_params(rfile->output, ¶ms);
+ case SNDRV_RAWMIDI_STREAM_INPUT:
++ if (!rfile->input)
++ return -EINVAL;
+ return snd_rawmidi_input_params(rfile->input, ¶ms);
+ }
+ return -EINVAL;
+@@ -67,16 +69,18 @@ static int snd_rawmidi_ioctl_status_compat(struct snd_rawmidi_file *rfile,
+ int err;
+ struct snd_rawmidi_status status;
+
+- if (rfile->output == NULL)
+- return -EINVAL;
+ if (get_user(status.stream, &src->stream))
+ return -EFAULT;
+
+ switch (status.stream) {
+ case SNDRV_RAWMIDI_STREAM_OUTPUT:
++ if (!rfile->output)
++ return -EINVAL;
+ err = snd_rawmidi_output_status(rfile->output, &status);
+ break;
+ case SNDRV_RAWMIDI_STREAM_INPUT:
++ if (!rfile->input)
++ return -EINVAL;
+ err = snd_rawmidi_input_status(rfile->input, &status);
+ break;
+ default:
+@@ -113,16 +117,18 @@ static int snd_rawmidi_ioctl_status_x32(struct snd_rawmidi_file *rfile,
+ int err;
+ struct snd_rawmidi_status status;
+
+- if (rfile->output == NULL)
+- return -EINVAL;
+ if (get_user(status.stream, &src->stream))
+ return -EFAULT;
+
+ switch (status.stream) {
+ case SNDRV_RAWMIDI_STREAM_OUTPUT:
++ if (!rfile->output)
++ return -EINVAL;
+ err = snd_rawmidi_output_status(rfile->output, &status);
+ break;
+ case SNDRV_RAWMIDI_STREAM_INPUT:
++ if (!rfile->input)
++ return -EINVAL;
+ err = snd_rawmidi_input_status(rfile->input, &status);
+ break;
+ default:
+diff --git a/sound/core/seq/oss/seq_oss_event.c b/sound/core/seq/oss/seq_oss_event.c
+index c3908862bc8b..86ca584c27b2 100644
+--- a/sound/core/seq/oss/seq_oss_event.c
++++ b/sound/core/seq/oss/seq_oss_event.c
+@@ -26,6 +26,7 @@
+ #include <sound/seq_oss_legacy.h>
+ #include "seq_oss_readq.h"
+ #include "seq_oss_writeq.h"
++#include <linux/nospec.h>
+
+
+ /*
+@@ -287,10 +288,10 @@ note_on_event(struct seq_oss_devinfo *dp, int dev, int ch, int note, int vel, st
+ {
+ struct seq_oss_synthinfo *info;
+
+- if (!snd_seq_oss_synth_is_valid(dp, dev))
++ info = snd_seq_oss_synth_info(dp, dev);
++ if (!info)
+ return -ENXIO;
+
+- info = &dp->synths[dev];
+ switch (info->arg.event_passing) {
+ case SNDRV_SEQ_OSS_PROCESS_EVENTS:
+ if (! info->ch || ch < 0 || ch >= info->nr_voices) {
+@@ -298,6 +299,7 @@ note_on_event(struct seq_oss_devinfo *dp, int dev, int ch, int note, int vel, st
+ return set_note_event(dp, dev, SNDRV_SEQ_EVENT_NOTEON, ch, note, vel, ev);
+ }
+
++ ch = array_index_nospec(ch, info->nr_voices);
+ if (note == 255 && info->ch[ch].note >= 0) {
+ /* volume control */
+ int type;
+@@ -347,10 +349,10 @@ note_off_event(struct seq_oss_devinfo *dp, int dev, int ch, int note, int vel, s
+ {
+ struct seq_oss_synthinfo *info;
+
+- if (!snd_seq_oss_synth_is_valid(dp, dev))
++ info = snd_seq_oss_synth_info(dp, dev);
++ if (!info)
+ return -ENXIO;
+
+- info = &dp->synths[dev];
+ switch (info->arg.event_passing) {
+ case SNDRV_SEQ_OSS_PROCESS_EVENTS:
+ if (! info->ch || ch < 0 || ch >= info->nr_voices) {
+@@ -358,6 +360,7 @@ note_off_event(struct seq_oss_devinfo *dp, int dev, int ch, int note, int vel, s
+ return set_note_event(dp, dev, SNDRV_SEQ_EVENT_NOTEON, ch, note, vel, ev);
+ }
+
++ ch = array_index_nospec(ch, info->nr_voices);
+ if (info->ch[ch].note >= 0) {
+ note = info->ch[ch].note;
+ info->ch[ch].vel = 0;
+@@ -381,7 +384,7 @@ note_off_event(struct seq_oss_devinfo *dp, int dev, int ch, int note, int vel, s
+ static int
+ set_note_event(struct seq_oss_devinfo *dp, int dev, int type, int ch, int note, int vel, struct snd_seq_event *ev)
+ {
+- if (! snd_seq_oss_synth_is_valid(dp, dev))
++ if (!snd_seq_oss_synth_info(dp, dev))
+ return -ENXIO;
+
+ ev->type = type;
+@@ -399,7 +402,7 @@ set_note_event(struct seq_oss_devinfo *dp, int dev, int type, int ch, int note,
+ static int
+ set_control_event(struct seq_oss_devinfo *dp, int dev, int type, int ch, int param, int val, struct snd_seq_event *ev)
+ {
+- if (! snd_seq_oss_synth_is_valid(dp, dev))
++ if (!snd_seq_oss_synth_info(dp, dev))
+ return -ENXIO;
+
+ ev->type = type;
+diff --git a/sound/core/seq/oss/seq_oss_midi.c b/sound/core/seq/oss/seq_oss_midi.c
+index 74c68a0f8abe..28c8e6720a08 100644
+--- a/sound/core/seq/oss/seq_oss_midi.c
++++ b/sound/core/seq/oss/seq_oss_midi.c
+@@ -29,6 +29,7 @@
+ #include "../seq_lock.h"
+ #include <linux/init.h>
+ #include <linux/slab.h>
++#include <linux/nospec.h>
+
+
+ /*
+@@ -315,6 +316,7 @@ get_mididev(struct seq_oss_devinfo *dp, int dev)
+ {
+ if (dev < 0 || dev >= dp->max_mididev)
+ return NULL;
++ dev = array_index_nospec(dev, dp->max_mididev);
+ return get_mdev(dev);
+ }
+
+diff --git a/sound/core/seq/oss/seq_oss_synth.c b/sound/core/seq/oss/seq_oss_synth.c
+index f38cf91b4faf..ff3fe10555eb 100644
+--- a/sound/core/seq/oss/seq_oss_synth.c
++++ b/sound/core/seq/oss/seq_oss_synth.c
+@@ -26,6 +26,7 @@
+ #include <linux/init.h>
+ #include <linux/module.h>
+ #include <linux/slab.h>
++#include <linux/nospec.h>
+
+ /*
+ * constants
+@@ -339,17 +340,13 @@ snd_seq_oss_synth_cleanup(struct seq_oss_devinfo *dp)
+ dp->max_synthdev = 0;
+ }
+
+-/*
+- * check if the specified device is MIDI mapped device
+- */
+-static int
+-is_midi_dev(struct seq_oss_devinfo *dp, int dev)
++static struct seq_oss_synthinfo *
++get_synthinfo_nospec(struct seq_oss_devinfo *dp, int dev)
+ {
+ if (dev < 0 || dev >= dp->max_synthdev)
+- return 0;
+- if (dp->synths[dev].is_midi)
+- return 1;
+- return 0;
++ return NULL;
++ dev = array_index_nospec(dev, SNDRV_SEQ_OSS_MAX_SYNTH_DEVS);
++ return &dp->synths[dev];
+ }
+
+ /*
+@@ -359,14 +356,20 @@ static struct seq_oss_synth *
+ get_synthdev(struct seq_oss_devinfo *dp, int dev)
+ {
+ struct seq_oss_synth *rec;
+- if (dev < 0 || dev >= dp->max_synthdev)
+- return NULL;
+- if (! dp->synths[dev].opened)
++ struct seq_oss_synthinfo *info = get_synthinfo_nospec(dp, dev);
++
++ if (!info)
+ return NULL;
+- if (dp->synths[dev].is_midi)
+- return &midi_synth_dev;
+- if ((rec = get_sdev(dev)) == NULL)
++ if (!info->opened)
+ return NULL;
++ if (info->is_midi) {
++ rec = &midi_synth_dev;
++ snd_use_lock_use(&rec->use_lock);
++ } else {
++ rec = get_sdev(dev);
++ if (!rec)
++ return NULL;
++ }
+ if (! rec->opened) {
+ snd_use_lock_free(&rec->use_lock);
+ return NULL;
+@@ -402,10 +405,8 @@ snd_seq_oss_synth_reset(struct seq_oss_devinfo *dp, int dev)
+ struct seq_oss_synth *rec;
+ struct seq_oss_synthinfo *info;
+
+- if (snd_BUG_ON(dev < 0 || dev >= dp->max_synthdev))
+- return;
+- info = &dp->synths[dev];
+- if (! info->opened)
++ info = get_synthinfo_nospec(dp, dev);
++ if (!info || !info->opened)
+ return;
+ if (info->sysex)
+ info->sysex->len = 0; /* reset sysex */
+@@ -454,12 +455,14 @@ snd_seq_oss_synth_load_patch(struct seq_oss_devinfo *dp, int dev, int fmt,
+ const char __user *buf, int p, int c)
+ {
+ struct seq_oss_synth *rec;
++ struct seq_oss_synthinfo *info;
+ int rc;
+
+- if (dev < 0 || dev >= dp->max_synthdev)
++ info = get_synthinfo_nospec(dp, dev);
++ if (!info)
+ return -ENXIO;
+
+- if (is_midi_dev(dp, dev))
++ if (info->is_midi)
+ return 0;
+ if ((rec = get_synthdev(dp, dev)) == NULL)
+ return -ENXIO;
+@@ -467,24 +470,25 @@ snd_seq_oss_synth_load_patch(struct seq_oss_devinfo *dp, int dev, int fmt,
+ if (rec->oper.load_patch == NULL)
+ rc = -ENXIO;
+ else
+- rc = rec->oper.load_patch(&dp->synths[dev].arg, fmt, buf, p, c);
++ rc = rec->oper.load_patch(&info->arg, fmt, buf, p, c);
+ snd_use_lock_free(&rec->use_lock);
+ return rc;
+ }
+
+ /*
+- * check if the device is valid synth device
++ * check if the device is valid synth device and return the synth info
+ */
+-int
+-snd_seq_oss_synth_is_valid(struct seq_oss_devinfo *dp, int dev)
++struct seq_oss_synthinfo *
++snd_seq_oss_synth_info(struct seq_oss_devinfo *dp, int dev)
+ {
+ struct seq_oss_synth *rec;
++
+ rec = get_synthdev(dp, dev);
+ if (rec) {
+ snd_use_lock_free(&rec->use_lock);
+- return 1;
++ return get_synthinfo_nospec(dp, dev);
+ }
+- return 0;
++ return NULL;
+ }
+
+
+@@ -499,16 +503,18 @@ snd_seq_oss_synth_sysex(struct seq_oss_devinfo *dp, int dev, unsigned char *buf,
+ int i, send;
+ unsigned char *dest;
+ struct seq_oss_synth_sysex *sysex;
++ struct seq_oss_synthinfo *info;
+
+- if (! snd_seq_oss_synth_is_valid(dp, dev))
++ info = snd_seq_oss_synth_info(dp, dev);
++ if (!info)
+ return -ENXIO;
+
+- sysex = dp->synths[dev].sysex;
++ sysex = info->sysex;
+ if (sysex == NULL) {
+ sysex = kzalloc(sizeof(*sysex), GFP_KERNEL);
+ if (sysex == NULL)
+ return -ENOMEM;
+- dp->synths[dev].sysex = sysex;
++ info->sysex = sysex;
+ }
+
+ send = 0;
+@@ -553,10 +559,12 @@ snd_seq_oss_synth_sysex(struct seq_oss_devinfo *dp, int dev, unsigned char *buf,
+ int
+ snd_seq_oss_synth_addr(struct seq_oss_devinfo *dp, int dev, struct snd_seq_event *ev)
+ {
+- if (! snd_seq_oss_synth_is_valid(dp, dev))
++ struct seq_oss_synthinfo *info = snd_seq_oss_synth_info(dp, dev);
++
++ if (!info)
+ return -EINVAL;
+- snd_seq_oss_fill_addr(dp, ev, dp->synths[dev].arg.addr.client,
+- dp->synths[dev].arg.addr.port);
++ snd_seq_oss_fill_addr(dp, ev, info->arg.addr.client,
++ info->arg.addr.port);
+ return 0;
+ }
+
+@@ -568,16 +576,18 @@ int
+ snd_seq_oss_synth_ioctl(struct seq_oss_devinfo *dp, int dev, unsigned int cmd, unsigned long addr)
+ {
+ struct seq_oss_synth *rec;
++ struct seq_oss_synthinfo *info;
+ int rc;
+
+- if (is_midi_dev(dp, dev))
++ info = get_synthinfo_nospec(dp, dev);
++ if (!info || info->is_midi)
+ return -ENXIO;
+ if ((rec = get_synthdev(dp, dev)) == NULL)
+ return -ENXIO;
+ if (rec->oper.ioctl == NULL)
+ rc = -ENXIO;
+ else
+- rc = rec->oper.ioctl(&dp->synths[dev].arg, cmd, addr);
++ rc = rec->oper.ioctl(&info->arg, cmd, addr);
+ snd_use_lock_free(&rec->use_lock);
+ return rc;
+ }
+@@ -589,7 +599,10 @@ snd_seq_oss_synth_ioctl(struct seq_oss_devinfo *dp, int dev, unsigned int cmd, u
+ int
+ snd_seq_oss_synth_raw_event(struct seq_oss_devinfo *dp, int dev, unsigned char *data, struct snd_seq_event *ev)
+ {
+- if (! snd_seq_oss_synth_is_valid(dp, dev) || is_midi_dev(dp, dev))
++ struct seq_oss_synthinfo *info;
++
++ info = snd_seq_oss_synth_info(dp, dev);
++ if (!info || info->is_midi)
+ return -ENXIO;
+ ev->type = SNDRV_SEQ_EVENT_OSS;
+ memcpy(ev->data.raw8.d, data, 8);
+diff --git a/sound/core/seq/oss/seq_oss_synth.h b/sound/core/seq/oss/seq_oss_synth.h
+index 74ac55f166b6..a63f9e22974d 100644
+--- a/sound/core/seq/oss/seq_oss_synth.h
++++ b/sound/core/seq/oss/seq_oss_synth.h
+@@ -37,7 +37,8 @@ void snd_seq_oss_synth_cleanup(struct seq_oss_devinfo *dp);
+ void snd_seq_oss_synth_reset(struct seq_oss_devinfo *dp, int dev);
+ int snd_seq_oss_synth_load_patch(struct seq_oss_devinfo *dp, int dev, int fmt,
+ const char __user *buf, int p, int c);
+-int snd_seq_oss_synth_is_valid(struct seq_oss_devinfo *dp, int dev);
++struct seq_oss_synthinfo *snd_seq_oss_synth_info(struct seq_oss_devinfo *dp,
++ int dev);
+ int snd_seq_oss_synth_sysex(struct seq_oss_devinfo *dp, int dev, unsigned char *buf,
+ struct snd_seq_event *ev);
+ int snd_seq_oss_synth_addr(struct seq_oss_devinfo *dp, int dev, struct snd_seq_event *ev);
+diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
+index dac0a54e39de..64a1ae720e49 100644
+--- a/sound/core/seq/seq_clientmgr.c
++++ b/sound/core/seq/seq_clientmgr.c
+@@ -270,12 +270,12 @@ static int seq_free_client1(struct snd_seq_client *client)
+
+ if (!client)
+ return 0;
+- snd_seq_delete_all_ports(client);
+- snd_seq_queue_client_leave(client->number);
+ spin_lock_irqsave(&clients_lock, flags);
+ clienttablock[client->number] = 1;
+ clienttab[client->number] = NULL;
+ spin_unlock_irqrestore(&clients_lock, flags);
++ snd_seq_delete_all_ports(client);
++ snd_seq_queue_client_leave(client->number);
+ snd_use_lock_sync(&client->use_lock);
+ snd_seq_queue_client_termination(client->number);
+ if (client->pool)
+diff --git a/sound/core/seq/seq_prioq.c b/sound/core/seq/seq_prioq.c
+index bc1c8488fc2a..2bc6759e4adc 100644
+--- a/sound/core/seq/seq_prioq.c
++++ b/sound/core/seq/seq_prioq.c
+@@ -87,7 +87,7 @@ void snd_seq_prioq_delete(struct snd_seq_prioq **fifo)
+ if (f->cells > 0) {
+ /* drain prioQ */
+ while (f->cells > 0)
+- snd_seq_cell_free(snd_seq_prioq_cell_out(f));
++ snd_seq_cell_free(snd_seq_prioq_cell_out(f, NULL));
+ }
+
+ kfree(f);
+@@ -214,8 +214,18 @@ int snd_seq_prioq_cell_in(struct snd_seq_prioq * f,
+ return 0;
+ }
+
++/* return 1 if the current time >= event timestamp */
++static int event_is_ready(struct snd_seq_event *ev, void *current_time)
++{
++ if ((ev->flags & SNDRV_SEQ_TIME_STAMP_MASK) == SNDRV_SEQ_TIME_STAMP_TICK)
++ return snd_seq_compare_tick_time(current_time, &ev->time.tick);
++ else
++ return snd_seq_compare_real_time(current_time, &ev->time.time);
++}
++
+ /* dequeue cell from prioq */
+-struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f)
++struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,
++ void *current_time)
+ {
+ struct snd_seq_event_cell *cell;
+ unsigned long flags;
+@@ -227,6 +237,8 @@ struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f)
+ spin_lock_irqsave(&f->lock, flags);
+
+ cell = f->head;
++ if (cell && current_time && !event_is_ready(&cell->event, current_time))
++ cell = NULL;
+ if (cell) {
+ f->head = cell->next;
+
+@@ -252,18 +264,6 @@ int snd_seq_prioq_avail(struct snd_seq_prioq * f)
+ return f->cells;
+ }
+
+-
+-/* peek at cell at the head of the prioq */
+-struct snd_seq_event_cell *snd_seq_prioq_cell_peek(struct snd_seq_prioq * f)
+-{
+- if (f == NULL) {
+- pr_debug("ALSA: seq: snd_seq_prioq_cell_in() called with NULL prioq\n");
+- return NULL;
+- }
+- return f->head;
+-}
+-
+-
+ static inline int prioq_match(struct snd_seq_event_cell *cell,
+ int client, int timestamp)
+ {
+diff --git a/sound/core/seq/seq_prioq.h b/sound/core/seq/seq_prioq.h
+index d38bb78d9345..2c315ca10fc4 100644
+--- a/sound/core/seq/seq_prioq.h
++++ b/sound/core/seq/seq_prioq.h
+@@ -44,14 +44,12 @@ void snd_seq_prioq_delete(struct snd_seq_prioq **fifo);
+ int snd_seq_prioq_cell_in(struct snd_seq_prioq *f, struct snd_seq_event_cell *cell);
+
+ /* dequeue cell from prioq */
+-struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f);
++struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,
++ void *current_time);
+
+ /* return number of events available in prioq */
+ int snd_seq_prioq_avail(struct snd_seq_prioq *f);
+
+-/* peek at cell at the head of the prioq */
+-struct snd_seq_event_cell *snd_seq_prioq_cell_peek(struct snd_seq_prioq *f);
+-
+ /* client left queue */
+ void snd_seq_prioq_leave(struct snd_seq_prioq *f, int client, int timestamp);
+
+diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c
+index a7bd074f6c0e..b83fdc72011e 100644
+--- a/sound/core/seq/seq_queue.c
++++ b/sound/core/seq/seq_queue.c
+@@ -277,30 +277,20 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
+
+ __again:
+ /* Process tick queue... */
+- while ((cell = snd_seq_prioq_cell_peek(q->tickq)) != NULL) {
+- if (snd_seq_compare_tick_time(&q->timer->tick.cur_tick,
+- &cell->event.time.tick)) {
+- cell = snd_seq_prioq_cell_out(q->tickq);
+- if (cell)
+- snd_seq_dispatch_event(cell, atomic, hop);
+- } else {
+- /* event remains in the queue */
++ for (;;) {
++ cell = snd_seq_prioq_cell_out(q->tickq,
++ &q->timer->tick.cur_tick);
++ if (!cell)
+ break;
+- }
++ snd_seq_dispatch_event(cell, atomic, hop);
+ }
+
+-
+ /* Process time queue... */
+- while ((cell = snd_seq_prioq_cell_peek(q->timeq)) != NULL) {
+- if (snd_seq_compare_real_time(&q->timer->cur_time,
+- &cell->event.time.time)) {
+- cell = snd_seq_prioq_cell_out(q->timeq);
+- if (cell)
+- snd_seq_dispatch_event(cell, atomic, hop);
+- } else {
+- /* event remains in the queue */
++ for (;;) {
++ cell = snd_seq_prioq_cell_out(q->timeq, &q->timer->cur_time);
++ if (!cell)
+ break;
+- }
++ snd_seq_dispatch_event(cell, atomic, hop);
+ }
+
+ /* free lock */
+diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c
+index 3b126af4a026..ef494ffc1369 100644
+--- a/sound/core/seq/seq_virmidi.c
++++ b/sound/core/seq/seq_virmidi.c
+@@ -174,12 +174,12 @@ static void snd_virmidi_output_trigger(struct snd_rawmidi_substream *substream,
+ }
+ return;
+ }
++ spin_lock_irqsave(&substream->runtime->lock, flags);
+ if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
+ if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
+- return;
++ goto out;
+ vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
+ }
+- spin_lock_irqsave(&substream->runtime->lock, flags);
+ while (1) {
+ count = __snd_rawmidi_transmit_peek(substream, buf, sizeof(buf));
+ if (count <= 0)
+diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c
+index 83ae083b192f..23df6a501648 100644
+--- a/sound/drivers/aloop.c
++++ b/sound/drivers/aloop.c
+@@ -192,6 +192,11 @@ static inline void loopback_timer_stop(struct loopback_pcm *dpcm)
+ dpcm->timer.expires = 0;
+ }
+
++static inline void loopback_timer_stop_sync(struct loopback_pcm *dpcm)
++{
++ del_timer_sync(&dpcm->timer);
++}
++
+ #define CABLE_VALID_PLAYBACK (1 << SNDRV_PCM_STREAM_PLAYBACK)
+ #define CABLE_VALID_CAPTURE (1 << SNDRV_PCM_STREAM_CAPTURE)
+ #define CABLE_VALID_BOTH (CABLE_VALID_PLAYBACK|CABLE_VALID_CAPTURE)
+@@ -291,6 +296,8 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd)
+ cable->pause |= stream;
+ loopback_timer_stop(dpcm);
+ spin_unlock(&cable->lock);
++ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
++ loopback_active_notify(dpcm);
+ break;
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_RESUME:
+@@ -299,6 +306,8 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd)
+ cable->pause &= ~stream;
+ loopback_timer_start(dpcm);
+ spin_unlock(&cable->lock);
++ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
++ loopback_active_notify(dpcm);
+ break;
+ default:
+ return -EINVAL;
+@@ -326,6 +335,8 @@ static int loopback_prepare(struct snd_pcm_substream *substream)
+ struct loopback_cable *cable = dpcm->cable;
+ int bps, salign;
+
++ loopback_timer_stop_sync(dpcm);
++
+ salign = (snd_pcm_format_width(runtime->format) *
+ runtime->channels) / 8;
+ bps = salign * runtime->rate;
+@@ -659,7 +670,9 @@ static void free_cable(struct snd_pcm_substream *substream)
+ return;
+ if (cable->streams[!substream->stream]) {
+ /* other stream is still alive */
++ spin_lock_irq(&cable->lock);
+ cable->streams[substream->stream] = NULL;
++ spin_unlock_irq(&cable->lock);
+ } else {
+ /* free the cable */
+ loopback->cables[substream->number][dev] = NULL;
+@@ -699,7 +712,6 @@ static int loopback_open(struct snd_pcm_substream *substream)
+ loopback->cables[substream->number][dev] = cable;
+ }
+ dpcm->cable = cable;
+- cable->streams[substream->stream] = dpcm;
+
+ snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+
+@@ -731,6 +743,11 @@ static int loopback_open(struct snd_pcm_substream *substream)
+ runtime->hw = loopback_pcm_hardware;
+ else
+ runtime->hw = cable->hw;
++
++ spin_lock_irq(&cable->lock);
++ cable->streams[substream->stream] = dpcm;
++ spin_unlock_irq(&cable->lock);
++
+ unlock:
+ if (err < 0) {
+ free_cable(substream);
+@@ -745,7 +762,7 @@ static int loopback_close(struct snd_pcm_substream *substream)
+ struct loopback *loopback = substream->private_data;
+ struct loopback_pcm *dpcm = substream->runtime->private_data;
+
+- loopback_timer_stop(dpcm);
++ loopback_timer_stop_sync(dpcm);
+ mutex_lock(&loopback->cable_lock);
+ free_cable(substream);
+ mutex_unlock(&loopback->cable_lock);
+@@ -815,9 +832,11 @@ static int loopback_rate_shift_get(struct snd_kcontrol *kcontrol,
+ {
+ struct loopback *loopback = snd_kcontrol_chip(kcontrol);
+
++ mutex_lock(&loopback->cable_lock);
+ ucontrol->value.integer.value[0] =
+ loopback->setup[kcontrol->id.subdevice]
+ [kcontrol->id.device].rate_shift;
++ mutex_unlock(&loopback->cable_lock);
+ return 0;
+ }
+
+@@ -849,9 +868,11 @@ static int loopback_notify_get(struct snd_kcontrol *kcontrol,
+ {
+ struct loopback *loopback = snd_kcontrol_chip(kcontrol);
+
++ mutex_lock(&loopback->cable_lock);
+ ucontrol->value.integer.value[0] =
+ loopback->setup[kcontrol->id.subdevice]
+ [kcontrol->id.device].notify;
++ mutex_unlock(&loopback->cable_lock);
+ return 0;
+ }
+
+@@ -863,12 +884,14 @@ static int loopback_notify_put(struct snd_kcontrol *kcontrol,
+ int change = 0;
+
+ val = ucontrol->value.integer.value[0] ? 1 : 0;
++ mutex_lock(&loopback->cable_lock);
+ if (val != loopback->setup[kcontrol->id.subdevice]
+ [kcontrol->id.device].notify) {
+ loopback->setup[kcontrol->id.subdevice]
+ [kcontrol->id.device].notify = val;
+ change = 1;
+ }
++ mutex_unlock(&loopback->cable_lock);
+ return change;
+ }
+
+@@ -876,13 +899,18 @@ static int loopback_active_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+ {
+ struct loopback *loopback = snd_kcontrol_chip(kcontrol);
+- struct loopback_cable *cable = loopback->cables
+- [kcontrol->id.subdevice][kcontrol->id.device ^ 1];
++ struct loopback_cable *cable;
++
+ unsigned int val = 0;
+
+- if (cable != NULL)
+- val = (cable->running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) ?
+- 1 : 0;
++ mutex_lock(&loopback->cable_lock);
++ cable = loopback->cables[kcontrol->id.subdevice][kcontrol->id.device ^ 1];
++ if (cable != NULL) {
++ unsigned int running = cable->running ^ cable->pause;
++
++ val = (running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) ? 1 : 0;
++ }
++ mutex_unlock(&loopback->cable_lock);
+ ucontrol->value.integer.value[0] = val;
+ return 0;
+ }
+@@ -925,9 +953,11 @@ static int loopback_rate_get(struct snd_kcontrol *kcontrol,
+ {
+ struct loopback *loopback = snd_kcontrol_chip(kcontrol);
+
++ mutex_lock(&loopback->cable_lock);
+ ucontrol->value.integer.value[0] =
+ loopback->setup[kcontrol->id.subdevice]
+ [kcontrol->id.device].rate;
++ mutex_unlock(&loopback->cable_lock);
+ return 0;
+ }
+
+@@ -947,9 +977,11 @@ static int loopback_channels_get(struct snd_kcontrol *kcontrol,
+ {
+ struct loopback *loopback = snd_kcontrol_chip(kcontrol);
+
++ mutex_lock(&loopback->cable_lock);
+ ucontrol->value.integer.value[0] =
+ loopback->setup[kcontrol->id.subdevice]
+ [kcontrol->id.device].channels;
++ mutex_unlock(&loopback->cable_lock);
+ return 0;
+ }
+
+diff --git a/sound/drivers/opl3/opl3_synth.c b/sound/drivers/opl3/opl3_synth.c
+index ddcc1a325a61..42920a243328 100644
+--- a/sound/drivers/opl3/opl3_synth.c
++++ b/sound/drivers/opl3/opl3_synth.c
+@@ -21,6 +21,7 @@
+
+ #include <linux/slab.h>
+ #include <linux/export.h>
++#include <linux/nospec.h>
+ #include <sound/opl3.h>
+ #include <sound/asound_fm.h>
+
+@@ -448,7 +449,7 @@ static int snd_opl3_set_voice(struct snd_opl3 * opl3, struct snd_dm_fm_voice * v
+ {
+ unsigned short reg_side;
+ unsigned char op_offset;
+- unsigned char voice_offset;
++ unsigned char voice_offset, voice_op;
+
+ unsigned short opl3_reg;
+ unsigned char reg_val;
+@@ -473,7 +474,9 @@ static int snd_opl3_set_voice(struct snd_opl3 * opl3, struct snd_dm_fm_voice * v
+ voice_offset = voice->voice - MAX_OPL2_VOICES;
+ }
+ /* Get register offset of operator */
+- op_offset = snd_opl3_regmap[voice_offset][voice->op];
++ voice_offset = array_index_nospec(voice_offset, MAX_OPL2_VOICES);
++ voice_op = array_index_nospec(voice->op, 4);
++ op_offset = snd_opl3_regmap[voice_offset][voice_op];
+
+ reg_val = 0x00;
+ /* Set amplitude modulation (tremolo) effect */
+diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c
+index 57df06e76968..cc009a4a3d1d 100644
+--- a/sound/pci/hda/hda_hwdep.c
++++ b/sound/pci/hda/hda_hwdep.c
+@@ -21,6 +21,7 @@
+ #include <linux/init.h>
+ #include <linux/slab.h>
+ #include <linux/compat.h>
++#include <linux/nospec.h>
+ #include <sound/core.h>
+ #include "hda_codec.h"
+ #include "hda_local.h"
+@@ -51,7 +52,16 @@ static int get_wcap_ioctl(struct hda_codec *codec,
+
+ if (get_user(verb, &arg->verb))
+ return -EFAULT;
+- res = get_wcaps(codec, verb >> 24);
++ /* open-code get_wcaps(verb>>24) with nospec */
++ verb >>= 24;
++ if (verb < codec->core.start_nid ||
++ verb >= codec->core.start_nid + codec->core.num_nodes) {
++ res = 0;
++ } else {
++ verb -= codec->core.start_nid;
++ verb = array_index_nospec(verb, codec->core.num_nodes);
++ res = codec->wcaps[verb];
++ }
+ if (put_user(res, &arg->res))
+ return -EFAULT;
+ return 0;
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index b8886d493083..8c9345949794 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -1393,7 +1393,8 @@ static void azx_check_snoop_available(struct azx *chip)
+ */
+ u8 val;
+ pci_read_config_byte(chip->pci, 0x42, &val);
+- if (!(val & 0x80) && chip->pci->revision == 0x30)
++ if (!(val & 0x80) && (chip->pci->revision == 0x30 ||
++ chip->pci->revision == 0x20))
+ snoop = false;
+ }
+
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 0fd1402e427b..64214c72a71b 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -3250,8 +3250,12 @@ static void alc269_fixup_mic_mute_hook(void *private_data, int enabled)
+ pinval = snd_hda_codec_get_pin_target(codec, spec->mute_led_nid);
+ pinval &= ~AC_PINCTL_VREFEN;
+ pinval |= enabled ? AC_PINCTL_VREF_HIZ : AC_PINCTL_VREF_80;
+- if (spec->mute_led_nid)
++ if (spec->mute_led_nid) {
++ /* temporarily power up/down for setting VREF */
++ snd_hda_power_up_pm(codec);
+ snd_hda_set_pin_ctl_cache(codec, spec->mute_led_nid, pinval);
++ snd_hda_power_down_pm(codec);
++ }
+ }
+
+ /* Make sure the led works even in runtime suspend */
+@@ -6723,6 +6727,7 @@ enum {
+ ALC668_FIXUP_DELL_DISABLE_AAMIX,
+ ALC668_FIXUP_DELL_XPS13,
+ ALC662_FIXUP_ASUS_Nx50,
++ ALC668_FIXUP_ASUS_Nx51_HEADSET_MODE,
+ ALC668_FIXUP_ASUS_Nx51,
+ };
+
+@@ -6970,14 +6975,21 @@ static const struct hda_fixup alc662_fixups[] = {
+ .chained = true,
+ .chain_id = ALC662_FIXUP_BASS_1A
+ },
++ [ALC668_FIXUP_ASUS_Nx51_HEADSET_MODE] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_headset_mode_alc668,
++ .chain_id = ALC662_FIXUP_BASS_CHMAP
++ },
+ [ALC668_FIXUP_ASUS_Nx51] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+- {0x1a, 0x90170151}, /* bass speaker */
++ { 0x19, 0x03a1913d }, /* use as headphone mic, without its own jack detect */
++ { 0x1a, 0x90170151 }, /* bass speaker */
++ { 0x1b, 0x03a1113c }, /* use as headset mic, without its own jack detect */
+ {}
+ },
+ .chained = true,
+- .chain_id = ALC662_FIXUP_BASS_CHMAP,
++ .chain_id = ALC668_FIXUP_ASUS_Nx51_HEADSET_MODE,
+ },
+ };
+
+diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
+index 7f6190606f5e..61a8eafc575c 100644
+--- a/sound/pci/rme9652/hdspm.c
++++ b/sound/pci/rme9652/hdspm.c
+@@ -137,6 +137,7 @@
+ #include <linux/pci.h>
+ #include <linux/math64.h>
+ #include <linux/io.h>
++#include <linux/nospec.h>
+
+ #include <sound/core.h>
+ #include <sound/control.h>
+@@ -5692,40 +5693,43 @@ static int snd_hdspm_channel_info(struct snd_pcm_substream *substream,
+ struct snd_pcm_channel_info *info)
+ {
+ struct hdspm *hdspm = snd_pcm_substream_chip(substream);
++ unsigned int channel = info->channel;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+- if (snd_BUG_ON(info->channel >= hdspm->max_channels_out)) {
++ if (snd_BUG_ON(channel >= hdspm->max_channels_out)) {
+ dev_info(hdspm->card->dev,
+ "snd_hdspm_channel_info: output channel out of range (%d)\n",
+- info->channel);
++ channel);
+ return -EINVAL;
+ }
+
+- if (hdspm->channel_map_out[info->channel] < 0) {
++ channel = array_index_nospec(channel, hdspm->max_channels_out);
++ if (hdspm->channel_map_out[channel] < 0) {
+ dev_info(hdspm->card->dev,
+ "snd_hdspm_channel_info: output channel %d mapped out\n",
+- info->channel);
++ channel);
+ return -EINVAL;
+ }
+
+- info->offset = hdspm->channel_map_out[info->channel] *
++ info->offset = hdspm->channel_map_out[channel] *
+ HDSPM_CHANNEL_BUFFER_BYTES;
+ } else {
+- if (snd_BUG_ON(info->channel >= hdspm->max_channels_in)) {
++ if (snd_BUG_ON(channel >= hdspm->max_channels_in)) {
+ dev_info(hdspm->card->dev,
+ "snd_hdspm_channel_info: input channel out of range (%d)\n",
+- info->channel);
++ channel);
+ return -EINVAL;
+ }
+
+- if (hdspm->channel_map_in[info->channel] < 0) {
++ channel = array_index_nospec(channel, hdspm->max_channels_in);
++ if (hdspm->channel_map_in[channel] < 0) {
+ dev_info(hdspm->card->dev,
+ "snd_hdspm_channel_info: input channel %d mapped out\n",
+- info->channel);
++ channel);
+ return -EINVAL;
+ }
+
+- info->offset = hdspm->channel_map_in[info->channel] *
++ info->offset = hdspm->channel_map_in[channel] *
+ HDSPM_CHANNEL_BUFFER_BYTES;
+ }
+
+diff --git a/sound/pci/rme9652/rme9652.c b/sound/pci/rme9652/rme9652.c
+index fdbc0aa2776a..c253bdf92e36 100644
+--- a/sound/pci/rme9652/rme9652.c
++++ b/sound/pci/rme9652/rme9652.c
+@@ -26,6 +26,7 @@
+ #include <linux/pci.h>
+ #include <linux/module.h>
+ #include <linux/io.h>
++#include <linux/nospec.h>
+
+ #include <sound/core.h>
+ #include <sound/control.h>
+@@ -2036,9 +2037,10 @@ static int snd_rme9652_channel_info(struct snd_pcm_substream *substream,
+ if (snd_BUG_ON(info->channel >= RME9652_NCHANNELS))
+ return -EINVAL;
+
+- if ((chn = rme9652->channel_map[info->channel]) < 0) {
++ chn = rme9652->channel_map[array_index_nospec(info->channel,
++ RME9652_NCHANNELS)];
++ if (chn < 0)
+ return -EINVAL;
+- }
+
+ info->offset = chn * RME9652_CHANNEL_BUFFER_BYTES;
+ info->first = 0;
+diff --git a/sound/soc/codecs/ssm2602.c b/sound/soc/codecs/ssm2602.c
+index 314eaece1b7d..ddf67da394de 100644
+--- a/sound/soc/codecs/ssm2602.c
++++ b/sound/soc/codecs/ssm2602.c
+@@ -54,10 +54,17 @@ struct ssm2602_priv {
+ * using 2 wire for device control, so we cache them instead.
+ * There is no point in caching the reset register
+ */
+-static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
+- 0x0097, 0x0097, 0x0079, 0x0079,
+- 0x000a, 0x0008, 0x009f, 0x000a,
+- 0x0000, 0x0000
++static const struct reg_default ssm2602_reg[SSM2602_CACHEREGNUM] = {
++ { .reg = 0x00, .def = 0x0097 },
++ { .reg = 0x01, .def = 0x0097 },
++ { .reg = 0x02, .def = 0x0079 },
++ { .reg = 0x03, .def = 0x0079 },
++ { .reg = 0x04, .def = 0x000a },
++ { .reg = 0x05, .def = 0x0008 },
++ { .reg = 0x06, .def = 0x009f },
++ { .reg = 0x07, .def = 0x000a },
++ { .reg = 0x08, .def = 0x0000 },
++ { .reg = 0x09, .def = 0x0000 }
+ };
+
+
+@@ -620,8 +627,8 @@ const struct regmap_config ssm2602_regmap_config = {
+ .volatile_reg = ssm2602_register_volatile,
+
+ .cache_type = REGCACHE_RBTREE,
+- .reg_defaults_raw = ssm2602_reg,
+- .num_reg_defaults_raw = ARRAY_SIZE(ssm2602_reg),
++ .reg_defaults = ssm2602_reg,
++ .num_reg_defaults = ARRAY_SIZE(ssm2602_reg),
+ };
+ EXPORT_SYMBOL_GPL(ssm2602_regmap_config);
+
+diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
+index 5c7597191e3f..80e3ca115f15 100644
+--- a/sound/soc/fsl/fsl_esai.c
++++ b/sound/soc/fsl/fsl_esai.c
+@@ -143,6 +143,13 @@ static int fsl_esai_divisor_cal(struct snd_soc_dai *dai, bool tx, u32 ratio,
+
+ psr = ratio <= 256 * maxfp ? ESAI_xCCR_xPSR_BYPASS : ESAI_xCCR_xPSR_DIV8;
+
++ /* Do not loop-search if PM (1 ~ 256) alone can serve the ratio */
++ if (ratio <= 256) {
++ pm = ratio;
++ fp = 1;
++ goto out;
++ }
++
+ /* Set the max fluctuation -- 0.1% of the max devisor */
+ savesub = (psr ? 1 : 8) * 256 * maxfp / 1000;
+
+diff --git a/sound/soc/intel/atom/sst/sst_stream.c b/sound/soc/intel/atom/sst/sst_stream.c
+index a74c64c7053c..e83da42a8c03 100644
+--- a/sound/soc/intel/atom/sst/sst_stream.c
++++ b/sound/soc/intel/atom/sst/sst_stream.c
+@@ -221,7 +221,7 @@ int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
+ sst_free_block(sst_drv_ctx, block);
+ out:
+ test_and_clear_bit(pvt_id, &sst_drv_ctx->pvt_id);
+- return 0;
++ return ret;
+ }
+
+ /*
+diff --git a/sound/soc/intel/boards/cht_bsw_rt5645.c b/sound/soc/intel/boards/cht_bsw_rt5645.c
+index 20a28b22e30f..5c3a38612c01 100644
+--- a/sound/soc/intel/boards/cht_bsw_rt5645.c
++++ b/sound/soc/intel/boards/cht_bsw_rt5645.c
+@@ -89,6 +89,7 @@ static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone", NULL),
+ SND_SOC_DAPM_MIC("Headset Mic", NULL),
+ SND_SOC_DAPM_MIC("Int Mic", NULL),
++ SND_SOC_DAPM_MIC("Int Analog Mic", NULL),
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+ SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
+ platform_clock_control, SND_SOC_DAPM_POST_PMD),
+@@ -99,6 +100,8 @@ static const struct snd_soc_dapm_route cht_audio_map[] = {
+ {"IN1N", NULL, "Headset Mic"},
+ {"DMIC L1", NULL, "Int Mic"},
+ {"DMIC R1", NULL, "Int Mic"},
++ {"IN2P", NULL, "Int Analog Mic"},
++ {"IN2N", NULL, "Int Analog Mic"},
+ {"Headphone", NULL, "HPOL"},
+ {"Headphone", NULL, "HPOR"},
+ {"Ext Spk", NULL, "SPOL"},
+@@ -112,6 +115,9 @@ static const struct snd_soc_dapm_route cht_audio_map[] = {
+ {"Headphone", NULL, "Platform Clock"},
+ {"Headset Mic", NULL, "Platform Clock"},
+ {"Int Mic", NULL, "Platform Clock"},
++ {"Int Analog Mic", NULL, "Platform Clock"},
++ {"Int Analog Mic", NULL, "micbias1"},
++ {"Int Analog Mic", NULL, "micbias2"},
+ {"Ext Spk", NULL, "Platform Clock"},
+ };
+
+@@ -119,6 +125,7 @@ static const struct snd_kcontrol_new cht_mc_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Headphone"),
+ SOC_DAPM_PIN_SWITCH("Headset Mic"),
+ SOC_DAPM_PIN_SWITCH("Int Mic"),
++ SOC_DAPM_PIN_SWITCH("Int Analog Mic"),
+ SOC_DAPM_PIN_SWITCH("Ext Spk"),
+ };
+
+diff --git a/sound/soc/nuc900/nuc900-ac97.c b/sound/soc/nuc900/nuc900-ac97.c
+index b6615affe571..fde974d52bb2 100644
+--- a/sound/soc/nuc900/nuc900-ac97.c
++++ b/sound/soc/nuc900/nuc900-ac97.c
+@@ -67,7 +67,7 @@ static unsigned short nuc900_ac97_read(struct snd_ac97 *ac97,
+
+ /* polling the AC_R_FINISH */
+ while (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_R_FINISH)
+- && timeout--)
++ && --timeout)
+ mdelay(1);
+
+ if (!timeout) {
+@@ -121,7 +121,7 @@ static void nuc900_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
+
+ /* polling the AC_W_FINISH */
+ while ((AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_W_FINISH)
+- && timeout--)
++ && --timeout)
+ mdelay(1);
+
+ if (!timeout)
+diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
+index 4599983cfc8a..c3b9d01d4e91 100644
+--- a/sound/soc/sh/rcar/ssi.c
++++ b/sound/soc/sh/rcar/ssi.c
+@@ -396,6 +396,13 @@ static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ u32 *buf = (u32 *)(runtime->dma_area +
+ rsnd_dai_pointer_offset(io, 0));
++ int shift = 0;
++
++ switch (runtime->sample_bits) {
++ case 32:
++ shift = 8;
++ break;
++ }
+
+ /*
+ * 8/16/32 data can be assesse to TDR/RDR register
+@@ -403,9 +410,9 @@ static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
+ * see rsnd_ssi_init()
+ */
+ if (rsnd_io_is_play(io))
+- rsnd_mod_write(mod, SSITDR, *buf);
++ rsnd_mod_write(mod, SSITDR, (*buf) << shift);
+ else
+- *buf = rsnd_mod_read(mod, SSIRDR);
++ *buf = (rsnd_mod_read(mod, SSIRDR) >> shift);
+
+ rsnd_dai_pointer_update(io, sizeof(*buf));
+ }
+diff --git a/sound/usb/line6/midi.c b/sound/usb/line6/midi.c
+index cebea9b7f769..6a9be1df7851 100644
+--- a/sound/usb/line6/midi.c
++++ b/sound/usb/line6/midi.c
+@@ -125,7 +125,7 @@ static int send_midi_async(struct usb_line6 *line6, unsigned char *data,
+ }
+
+ usb_fill_int_urb(urb, line6->usbdev,
+- usb_sndbulkpipe(line6->usbdev,
++ usb_sndintpipe(line6->usbdev,
+ line6->properties->ep_ctrl_w),
+ transfer_buffer, length, midi_sent, line6,
+ line6->interval);
+diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
+index 1f8fb0d904e0..f5cf23ffb35b 100644
+--- a/sound/usb/mixer_maps.c
++++ b/sound/usb/mixer_maps.c
+@@ -351,8 +351,11 @@ static struct usbmix_name_map bose_companion5_map[] = {
+ /*
+ * Dell usb dock with ALC4020 codec had a firmware problem where it got
+ * screwed up when zero volume is passed; just skip it as a workaround
++ *
++ * Also the extension unit gives an access error, so skip it as well.
+ */
+ static const struct usbmix_name_map dell_alc4020_map[] = {
++ { 4, NULL }, /* extension unit */
+ { 16, NULL },
+ { 19, NULL },
+ { 0 }
+diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
+index 09b9b74e4c1b..6b169043db1f 100644
+--- a/tools/perf/builtin-trace.c
++++ b/tools/perf/builtin-trace.c
+@@ -1023,6 +1023,10 @@ static struct syscall_fmt {
+ { .name = "mlockall", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
+ { .name = "mmap", .hexret = true,
++/* The standard mmap maps to old_mmap on s390x */
++#if defined(__s390x__)
++ .alias = "old_mmap",
++#endif
+ .arg_scnprintf = { [0] = SCA_HEX, /* addr */
+ [2] = SCA_MMAP_PROT, /* prot */
+ [3] = SCA_MMAP_FLAGS, /* flags */
+diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
+index f671ec37a7c4..0a9362680aa4 100644
+--- a/tools/perf/tests/code-reading.c
++++ b/tools/perf/tests/code-reading.c
+@@ -140,6 +140,8 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode,
+ unsigned char buf2[BUFSZ];
+ size_t ret_len;
+ u64 objdump_addr;
++ const char *objdump_name;
++ char decomp_name[KMOD_DECOMP_LEN];
+ int ret;
+
+ pr_debug("Reading object code for memory address: %#"PRIx64"\n", addr);
+@@ -200,9 +202,25 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode,
+ state->done[state->done_cnt++] = al.map->start;
+ }
+
++ objdump_name = al.map->dso->long_name;
++ if (dso__needs_decompress(al.map->dso)) {
++ if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
++ decomp_name,
++ sizeof(decomp_name)) < 0) {
++ pr_debug("decompression failed\n");
++ return -1;
++ }
++
++ objdump_name = decomp_name;
++ }
++
+ /* Read the object code using objdump */
+ objdump_addr = map__rip_2objdump(al.map, al.addr);
+- ret = read_via_objdump(al.map->dso->long_name, objdump_addr, buf2, len);
++ ret = read_via_objdump(objdump_name, objdump_addr, buf2, len);
++
++ if (dso__needs_decompress(al.map->dso))
++ unlink(objdump_name);
++
+ if (ret > 0) {
+ /*
+ * The kernel maps are inaccurate - assume objdump is right in
+diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
+index 12ad79717d94..36822be05b07 100644
+--- a/tools/perf/util/event.c
++++ b/tools/perf/util/event.c
+@@ -221,8 +221,8 @@ int perf_event__synthesize_mmap_events(struct perf_tool *tool,
+ if (machine__is_default_guest(machine))
+ return 0;
+
+- snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
+- machine->root_dir, pid);
++ snprintf(filename, sizeof(filename), "%s/proc/%d/task/%d/maps",
++ machine->root_dir, pid, pid);
+
+ fp = fopen(filename, "r");
+ if (fp == NULL) {
+diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c
+index 52be201b9b25..90a986740684 100644
+--- a/tools/perf/util/ordered-events.c
++++ b/tools/perf/util/ordered-events.c
+@@ -79,7 +79,7 @@ static union perf_event *dup_event(struct ordered_events *oe,
+
+ static void free_dup_event(struct ordered_events *oe, union perf_event *event)
+ {
+- if (oe->copy_on_queue) {
++ if (event && oe->copy_on_queue) {
+ oe->cur_alloc_size -= event->header.size;
+ free(event);
+ }
+@@ -150,6 +150,7 @@ void ordered_events__delete(struct ordered_events *oe, struct ordered_event *eve
+ list_move(&event->list, &oe->cache);
+ oe->nr_events--;
+ free_dup_event(oe, event->event);
++ event->event = NULL;
+ }
+
+ int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
+diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
+index 83054ef6c1a1..f947f069449c 100644
+--- a/tools/perf/util/session.c
++++ b/tools/perf/util/session.c
+@@ -132,8 +132,14 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
+ if (perf_session__open(session) < 0)
+ goto out_close;
+
+- perf_session__set_id_hdr_size(session);
+- perf_session__set_comm_exec(session);
++ /*
++ * set session attributes that are present in perf.data
++ * but not in pipe-mode.
++ */
++ if (!file->is_pipe) {
++ perf_session__set_id_hdr_size(session);
++ perf_session__set_comm_exec(session);
++ }
+ }
+ }
+
+@@ -146,7 +152,11 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
+ pr_warning("Cannot read kernel map\n");
+ }
+
+- if (tool && tool->ordering_requires_timestamps &&
++ /*
++ * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
++ * processed, so perf_evlist__sample_id_all is not meaningful here.
++ */
++ if ((!file || !file->is_pipe) && tool && tool->ordering_requires_timestamps &&
+ tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
+ dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
+ tool->ordered_events = false;
+@@ -1193,6 +1203,7 @@ static int __perf_session__process_pipe_events(struct perf_session *session)
+ buf = malloc(cur_size);
+ if (!buf)
+ return -errno;
++ ordered_events__set_copy_on_queue(oe, true);
+ more:
+ event = buf;
+ err = readn(fd, event, sizeof(struct perf_event_header));
+diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
+index 2dcfe9a7c8d0..60edec383281 100644
+--- a/tools/perf/util/unwind-libdw.c
++++ b/tools/perf/util/unwind-libdw.c
+@@ -37,6 +37,14 @@ static int __report_module(struct addr_location *al, u64 ip,
+ return 0;
+
+ mod = dwfl_addrmodule(ui->dwfl, ip);
++ if (mod) {
++ Dwarf_Addr s;
++
++ dwfl_module_info(mod, NULL, &s, NULL, NULL, NULL, NULL, NULL);
++ if (s != al->map->start)
++ mod = 0;
++ }
++
+ if (!mod)
+ mod = dwfl_report_elf(ui->dwfl, dso->short_name,
+ dso->long_name, -1, al->map->start,
+diff --git a/tools/testing/selftests/powerpc/tm/tm-resched-dscr.c b/tools/testing/selftests/powerpc/tm/tm-resched-dscr.c
+index 42d4c8caad81..de8dc82e2567 100644
+--- a/tools/testing/selftests/powerpc/tm/tm-resched-dscr.c
++++ b/tools/testing/selftests/powerpc/tm/tm-resched-dscr.c
+@@ -45,12 +45,12 @@ int test_body(void)
+ printf("Check DSCR TM context switch: ");
+ fflush(stdout);
+ for (;;) {
+- rv = 1;
+ asm __volatile__ (
+ /* set a known value into the DSCR */
+ "ld 3, %[dscr1];"
+ "mtspr %[sprn_dscr], 3;"
+
++ "li %[rv], 1;"
+ /* start and suspend a transaction */
+ TBEGIN
+ "beq 1f;"
+diff --git a/tools/testing/selftests/rcutorture/bin/configinit.sh b/tools/testing/selftests/rcutorture/bin/configinit.sh
+index 15f1a17ca96e..0b679d8382c7 100755
+--- a/tools/testing/selftests/rcutorture/bin/configinit.sh
++++ b/tools/testing/selftests/rcutorture/bin/configinit.sh
+@@ -51,7 +51,7 @@ then
+ mkdir $builddir
+ fi
+ else
+- echo Bad build directory: \"$builddir\"
++ echo Bad build directory: \"$buildloc\"
+ exit 2
+ fi
+ fi
+diff --git a/tools/usb/usbip/src/usbipd.c b/tools/usb/usbip/src/usbipd.c
+index 2a7cd2b8d966..8c5b0faba229 100644
+--- a/tools/usb/usbip/src/usbipd.c
++++ b/tools/usb/usbip/src/usbipd.c
+@@ -451,7 +451,7 @@ static void set_signal(void)
+ sigaction(SIGTERM, &act, NULL);
+ sigaction(SIGINT, &act, NULL);
+ act.sa_handler = SIG_IGN;
+- sigaction(SIGCLD, &act, NULL);
++ sigaction(SIGCHLD, &act, NULL);
+ }
+
+ static const char *pid_file;
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2018-01-23 9:37 Alice Ferrazzi
0 siblings, 0 replies; 71+ messages in thread
From: Alice Ferrazzi @ 2018-01-23 9:37 UTC (permalink / raw
To: gentoo-commits
commit: e50c7e98641a337aac5975ac6fe0fe00036b9714
Author: Alice Ferrazzi <alicef <AT> gentoo <DOT> org>
AuthorDate: Tue Jan 23 09:37:39 2018 +0000
Commit: Alice Ferrazzi <alicef <AT> gentoo <DOT> org>
CommitDate: Tue Jan 23 09:37:39 2018 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=e50c7e98
linux kernel 4.1.49
0000_README | 4 +
1048_linux-4.1.49.patch | 8523 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 8527 insertions(+)
diff --git a/0000_README b/0000_README
index 1b3166c..3abfafc 100644
--- a/0000_README
+++ b/0000_README
@@ -235,6 +235,10 @@ Patch: 1047_linux-4.1.48.patch
From: http://www.kernel.org
Desc: Linux 4.1.48
+Patch: 1048_linux-4.1.49.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.49
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1048_linux-4.1.49.patch b/1048_linux-4.1.49.patch
new file mode 100644
index 0000000..702661c
--- /dev/null
+++ b/1048_linux-4.1.49.patch
@@ -0,0 +1,8523 @@
+diff --git a/Makefile b/Makefile
+index 97edf556bfe4..a51938e99e37 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 48
++SUBLEVEL = 49
+ EXTRAVERSION =
+ NAME = Series 4800
+
+@@ -612,6 +612,10 @@ include arch/$(SRCARCH)/Makefile
+ KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
+ KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
+ KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
++KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,)
++KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
++KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
++KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context)
+
+ ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+ KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
+diff --git a/arch/arm/include/asm/floppy.h b/arch/arm/include/asm/floppy.h
+index f4882553fbb0..85a34cc8316a 100644
+--- a/arch/arm/include/asm/floppy.h
++++ b/arch/arm/include/asm/floppy.h
+@@ -17,7 +17,7 @@
+
+ #define fd_outb(val,port) \
+ do { \
+- if ((port) == FD_DOR) \
++ if ((port) == (u32)FD_DOR) \
+ fd_setdor((val)); \
+ else \
+ outb((val),(port)); \
+diff --git a/arch/arm/include/asm/kvm_arm.h b/arch/arm/include/asm/kvm_arm.h
+index d995821f1698..aacd6668d1a0 100644
+--- a/arch/arm/include/asm/kvm_arm.h
++++ b/arch/arm/include/asm/kvm_arm.h
+@@ -209,6 +209,7 @@
+ #define HSR_EC_IABT_HYP (0x21)
+ #define HSR_EC_DABT (0x24)
+ #define HSR_EC_DABT_HYP (0x25)
++#define HSR_EC_MAX (0x3f)
+
+ #define HSR_WFI_IS_WFE (1U << 0)
+
+diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c
+index 95f12b2ccdcb..f36b5b1acd1f 100644
+--- a/arch/arm/kvm/handle_exit.c
++++ b/arch/arm/kvm/handle_exit.c
+@@ -100,7 +100,19 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ return 1;
+ }
+
++static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu, struct kvm_run *run)
++{
++ u32 hsr = kvm_vcpu_get_hsr(vcpu);
++
++ kvm_pr_unimpl("Unknown exception class: hsr: %#08x\n",
++ hsr);
++
++ kvm_inject_undefined(vcpu);
++ return 1;
++}
++
+ static exit_handle_fn arm_exit_handlers[] = {
++ [0 ... HSR_EC_MAX] = kvm_handle_unknown_ec,
+ [HSR_EC_WFI] = kvm_handle_wfx,
+ [HSR_EC_CP15_32] = kvm_handle_cp15_32,
+ [HSR_EC_CP15_64] = kvm_handle_cp15_64,
+@@ -122,13 +134,6 @@ static exit_handle_fn kvm_get_exit_handler(struct kvm_vcpu *vcpu)
+ {
+ u8 hsr_ec = kvm_vcpu_trap_get_class(vcpu);
+
+- if (hsr_ec >= ARRAY_SIZE(arm_exit_handlers) ||
+- !arm_exit_handlers[hsr_ec]) {
+- kvm_err("Unknown exception class: hsr: %#08x\n",
+- (unsigned int)kvm_vcpu_get_hsr(vcpu));
+- BUG();
+- }
+-
+ return arm_exit_handlers[hsr_ec];
+ }
+
+diff --git a/arch/arm/mach-omap1/dma.c b/arch/arm/mach-omap1/dma.c
+index 4be601b638d7..8129e5f9c94d 100644
+--- a/arch/arm/mach-omap1/dma.c
++++ b/arch/arm/mach-omap1/dma.c
+@@ -31,7 +31,6 @@
+ #include <mach/irqs.h>
+
+ #define OMAP1_DMA_BASE (0xfffed800)
+-#define OMAP1_LOGICAL_DMA_CH_COUNT 17
+
+ static u32 enable_1510_mode;
+
+@@ -311,8 +310,6 @@ static int __init omap1_system_dma_init(void)
+ goto exit_iounmap;
+ }
+
+- d->lch_count = OMAP1_LOGICAL_DMA_CH_COUNT;
+-
+ /* Valid attributes for omap1 plus processors */
+ if (cpu_is_omap15xx())
+ d->dev_caps = ENABLE_1510_MODE;
+@@ -329,13 +326,14 @@ static int __init omap1_system_dma_init(void)
+ d->dev_caps |= CLEAR_CSR_ON_READ;
+ d->dev_caps |= IS_WORD_16;
+
+- if (cpu_is_omap15xx())
+- d->chan_count = 9;
+- else if (cpu_is_omap16xx() || cpu_is_omap7xx()) {
+- if (!(d->dev_caps & ENABLE_1510_MODE))
+- d->chan_count = 16;
++ /* available logical channels */
++ if (cpu_is_omap15xx()) {
++ d->lch_count = 9;
++ } else {
++ if (d->dev_caps & ENABLE_1510_MODE)
++ d->lch_count = 9;
+ else
+- d->chan_count = 9;
++ d->lch_count = 16;
+ }
+
+ p = dma_plat_info;
+diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c
+index f899e77ff5e6..a9e7733f3c70 100644
+--- a/arch/arm/mach-omap2/gpmc-onenand.c
++++ b/arch/arm/mach-omap2/gpmc-onenand.c
+@@ -363,7 +363,7 @@ static int gpmc_onenand_setup(void __iomem *onenand_base, int *freq_ptr)
+ return ret;
+ }
+
+-void gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data)
++int gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data)
+ {
+ int err;
+ struct device *dev = &gpmc_onenand_device.dev;
+@@ -389,15 +389,17 @@ void gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data)
+ if (err < 0) {
+ dev_err(dev, "Cannot request GPMC CS %d, error %d\n",
+ gpmc_onenand_data->cs, err);
+- return;
++ return err;
+ }
+
+ gpmc_onenand_resource.end = gpmc_onenand_resource.start +
+ ONENAND_IO_SIZE - 1;
+
+- if (platform_device_register(&gpmc_onenand_device) < 0) {
++ err = platform_device_register(&gpmc_onenand_device);
++ if (err) {
+ dev_err(dev, "Unable to register OneNAND device\n");
+ gpmc_cs_free(gpmc_onenand_data->cs);
+- return;
+ }
++
++ return err;
+ }
+diff --git a/arch/arm/mach-ux500/pm.c b/arch/arm/mach-ux500/pm.c
+index 2cb587b50905..7ae4f94db1e8 100644
+--- a/arch/arm/mach-ux500/pm.c
++++ b/arch/arm/mach-ux500/pm.c
+@@ -132,8 +132,8 @@ bool prcmu_pending_irq(void)
+ */
+ bool prcmu_is_cpu_in_wfi(int cpu)
+ {
+- return readl(PRCM_ARM_WFI_STANDBY) & cpu ? PRCM_ARM_WFI_STANDBY_WFI1 :
+- PRCM_ARM_WFI_STANDBY_WFI0;
++ return readl(PRCM_ARM_WFI_STANDBY) &
++ (cpu ? PRCM_ARM_WFI_STANDBY_WFI1 : PRCM_ARM_WFI_STANDBY_WFI0);
+ }
+
+ /*
+diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
+index ac6fafb95fe7..4b695bfbb7fd 100644
+--- a/arch/arm64/include/asm/kvm_arm.h
++++ b/arch/arm64/include/asm/kvm_arm.h
+@@ -162,8 +162,7 @@
+ #define VTTBR_X (37 - VTCR_EL2_T0SZ_40B)
+ #endif
+
+-#define VTTBR_BADDR_SHIFT (VTTBR_X - 1)
+-#define VTTBR_BADDR_MASK (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT)
++#define VTTBR_BADDR_MASK (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_X)
+ #define VTTBR_VMID_SHIFT (UL(48))
+ #define VTTBR_VMID_MASK (UL(0xFF) << VTTBR_VMID_SHIFT)
+
+diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
+index 4849baa914d8..8f65f969f51c 100644
+--- a/arch/arm64/include/asm/uaccess.h
++++ b/arch/arm64/include/asm/uaccess.h
+@@ -21,6 +21,7 @@
+ /*
+ * User space memory access functions
+ */
++#include <linux/bitops.h>
+ #include <linux/string.h>
+ #include <linux/thread_info.h>
+
+@@ -100,6 +101,13 @@ static inline void set_fs(mm_segment_t fs)
+ flag; \
+ })
+
++/*
++ * When dealing with data aborts, watchpoints, or instruction traps we may end
++ * up with a tagged userland pointer. Clear the tag to get a sane pointer to
++ * pass on to access_ok(), for instance.
++ */
++#define untagged_addr(addr) sign_extend64(addr, 55)
++
+ #define access_ok(type, addr, size) __range_ok(addr, size)
+ #define user_addr_max get_fs
+
+diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c
+index e7d934d3afe0..30f92321c00f 100644
+--- a/arch/arm64/kernel/hw_breakpoint.c
++++ b/arch/arm64/kernel/hw_breakpoint.c
+@@ -35,6 +35,7 @@
+ #include <asm/traps.h>
+ #include <asm/cputype.h>
+ #include <asm/system_misc.h>
++#include <asm/uaccess.h>
+
+ /* Breakpoint currently in use for each BRP. */
+ static DEFINE_PER_CPU(struct perf_event *, bp_on_reg[ARM_MAX_BRP]);
+@@ -688,7 +689,7 @@ static int watchpoint_handler(unsigned long addr, unsigned int esr,
+
+ /* Check if the watchpoint value matches. */
+ val = read_wb_reg(AARCH64_DBG_REG_WVR, i);
+- if (val != (addr & ~alignment_mask))
++ if (val != (untagged_addr(addr) & ~alignment_mask))
+ goto unlock;
+
+ /* Possible match, check the byte address select to confirm. */
+diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
+index c6b1f3b96f45..a838d628cff7 100644
+--- a/arch/arm64/kernel/process.c
++++ b/arch/arm64/kernel/process.c
+@@ -258,6 +258,15 @@ int copy_thread(unsigned long clone_flags, unsigned long stack_start,
+
+ memset(&p->thread.cpu_context, 0, sizeof(struct cpu_context));
+
++ /*
++ * In case p was allocated the same task_struct pointer as some
++ * other recently-exited task, make sure p is disassociated from
++ * any cpu that may have run that now-exited task recently.
++ * Otherwise we could erroneously skip reloading the FPSIMD
++ * registers for p.
++ */
++ fpsimd_flush_task_state(p);
++
+ if (likely(!(p->flags & PF_KTHREAD))) {
+ *childregs = *current_pt_regs();
+ childregs->regs[0] = 0;
+diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
+index af76634f8d98..934573cc1134 100644
+--- a/arch/blackfin/Kconfig
++++ b/arch/blackfin/Kconfig
+@@ -318,11 +318,14 @@ config BF53x
+
+ config GPIO_ADI
+ def_bool y
++ depends on !PINCTRL
+ depends on (BF51x || BF52x || BF53x || BF538 || BF539 || BF561)
+
+-config PINCTRL
++config PINCTRL_BLACKFIN_ADI2
+ def_bool y
+- depends on BF54x || BF60x
++ depends on (BF54x || BF60x)
++ select PINCTRL
++ select PINCTRL_ADI2
+
+ config MEM_MT48LC64M4A2FB_7E
+ bool
+diff --git a/arch/blackfin/Kconfig.debug b/arch/blackfin/Kconfig.debug
+index f3337ee03621..a93cf06a4d6f 100644
+--- a/arch/blackfin/Kconfig.debug
++++ b/arch/blackfin/Kconfig.debug
+@@ -17,6 +17,7 @@ config DEBUG_VERBOSE
+
+ config DEBUG_MMRS
+ tristate "Generate Blackfin MMR tree"
++ depends on !PINCTRL
+ select DEBUG_FS
+ help
+ Create a tree of Blackfin MMRs via the debugfs tree. If
+diff --git a/arch/c6x/kernel/ptrace.c b/arch/c6x/kernel/ptrace.c
+index 3c494e84444d..a511ac16a8e3 100644
+--- a/arch/c6x/kernel/ptrace.c
++++ b/arch/c6x/kernel/ptrace.c
+@@ -69,46 +69,6 @@ static int gpr_get(struct task_struct *target,
+ 0, sizeof(*regs));
+ }
+
+-static int gpr_set(struct task_struct *target,
+- const struct user_regset *regset,
+- unsigned int pos, unsigned int count,
+- const void *kbuf, const void __user *ubuf)
+-{
+- int ret;
+- struct pt_regs *regs = task_pt_regs(target);
+-
+- /* Don't copyin TSR or CSR */
+- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+- ®s,
+- 0, PT_TSR * sizeof(long));
+- if (ret)
+- return ret;
+-
+- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+- PT_TSR * sizeof(long),
+- (PT_TSR + 1) * sizeof(long));
+- if (ret)
+- return ret;
+-
+- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+- ®s,
+- (PT_TSR + 1) * sizeof(long),
+- PT_CSR * sizeof(long));
+- if (ret)
+- return ret;
+-
+- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+- PT_CSR * sizeof(long),
+- (PT_CSR + 1) * sizeof(long));
+- if (ret)
+- return ret;
+-
+- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+- ®s,
+- (PT_CSR + 1) * sizeof(long), -1);
+- return ret;
+-}
+-
+ enum c6x_regset {
+ REGSET_GPR,
+ };
+@@ -120,7 +80,6 @@ static const struct user_regset c6x_regsets[] = {
+ .size = sizeof(u32),
+ .align = sizeof(u32),
+ .get = gpr_get,
+- .set = gpr_set
+ },
+ };
+
+diff --git a/arch/metag/kernel/ptrace.c b/arch/metag/kernel/ptrace.c
+index 7563628822bd..5e2dc7defd2c 100644
+--- a/arch/metag/kernel/ptrace.c
++++ b/arch/metag/kernel/ptrace.c
+@@ -24,6 +24,16 @@
+ * user_regset definitions.
+ */
+
++static unsigned long user_txstatus(const struct pt_regs *regs)
++{
++ unsigned long data = (unsigned long)regs->ctx.Flags;
++
++ if (regs->ctx.SaveMask & TBICTX_CBUF_BIT)
++ data |= USER_GP_REGS_STATUS_CATCH_BIT;
++
++ return data;
++}
++
+ int metag_gp_regs_copyout(const struct pt_regs *regs,
+ unsigned int pos, unsigned int count,
+ void *kbuf, void __user *ubuf)
+@@ -62,9 +72,7 @@ int metag_gp_regs_copyout(const struct pt_regs *regs,
+ if (ret)
+ goto out;
+ /* TXSTATUS */
+- data = (unsigned long)regs->ctx.Flags;
+- if (regs->ctx.SaveMask & TBICTX_CBUF_BIT)
+- data |= USER_GP_REGS_STATUS_CATCH_BIT;
++ data = user_txstatus(regs);
+ ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+ &data, 4*25, 4*26);
+ if (ret)
+@@ -119,6 +127,7 @@ int metag_gp_regs_copyin(struct pt_regs *regs,
+ if (ret)
+ goto out;
+ /* TXSTATUS */
++ data = user_txstatus(regs);
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &data, 4*25, 4*26);
+ if (ret)
+@@ -244,6 +253,8 @@ int metag_rp_state_copyin(struct pt_regs *regs,
+ unsigned long long *ptr;
+ int ret, i;
+
++ if (count < 4*13)
++ return -EINVAL;
+ /* Read the entire pipeline before making any changes */
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &rp, 0, 4*13);
+@@ -303,7 +314,7 @@ static int metag_tls_set(struct task_struct *target,
+ const void *kbuf, const void __user *ubuf)
+ {
+ int ret;
+- void __user *tls;
++ void __user *tls = target->thread.tls_ptr;
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &tls, 0, -1);
+ if (ret)
+diff --git a/arch/mips/configs/ip27_defconfig b/arch/mips/configs/ip27_defconfig
+index 48e16d98b2cc..6ecc67f3736b 100644
+--- a/arch/mips/configs/ip27_defconfig
++++ b/arch/mips/configs/ip27_defconfig
+@@ -206,7 +206,6 @@ CONFIG_MLX4_EN=m
+ # CONFIG_MLX4_DEBUG is not set
+ CONFIG_TEHUTI=m
+ CONFIG_BNX2X=m
+-CONFIG_QLGE=m
+ CONFIG_SFC=m
+ CONFIG_BE2NET=m
+ CONFIG_LIBERTAS_THINFIRM=m
+diff --git a/arch/mips/dec/int-handler.S b/arch/mips/dec/int-handler.S
+index 8c6f508e59de..554d1da97743 100644
+--- a/arch/mips/dec/int-handler.S
++++ b/arch/mips/dec/int-handler.S
+@@ -146,7 +146,25 @@
+ /*
+ * Find irq with highest priority
+ */
+- PTR_LA t1,cpu_mask_nr_tbl
++ # open coded PTR_LA t1, cpu_mask_nr_tbl
++#if (_MIPS_SZPTR == 32)
++ # open coded la t1, cpu_mask_nr_tbl
++ lui t1, %hi(cpu_mask_nr_tbl)
++ addiu t1, %lo(cpu_mask_nr_tbl)
++
++#endif
++#if (_MIPS_SZPTR == 64)
++ # open coded dla t1, cpu_mask_nr_tbl
++ .set push
++ .set noat
++ lui t1, %highest(cpu_mask_nr_tbl)
++ lui AT, %hi(cpu_mask_nr_tbl)
++ daddiu t1, t1, %higher(cpu_mask_nr_tbl)
++ daddiu AT, AT, %lo(cpu_mask_nr_tbl)
++ dsll t1, 32
++ daddu t1, t1, AT
++ .set pop
++#endif
+ 1: lw t2,(t1)
+ nop
+ and t2,t0
+@@ -195,7 +213,25 @@
+ /*
+ * Find irq with highest priority
+ */
+- PTR_LA t1,asic_mask_nr_tbl
++ # open coded PTR_LA t1,asic_mask_nr_tbl
++#if (_MIPS_SZPTR == 32)
++ # open coded la t1, asic_mask_nr_tbl
++ lui t1, %hi(asic_mask_nr_tbl)
++ addiu t1, %lo(asic_mask_nr_tbl)
++
++#endif
++#if (_MIPS_SZPTR == 64)
++ # open coded dla t1, asic_mask_nr_tbl
++ .set push
++ .set noat
++ lui t1, %highest(asic_mask_nr_tbl)
++ lui AT, %hi(asic_mask_nr_tbl)
++ daddiu t1, t1, %higher(asic_mask_nr_tbl)
++ daddiu AT, AT, %lo(asic_mask_nr_tbl)
++ dsll t1, 32
++ daddu t1, t1, AT
++ .set pop
++#endif
+ 2: lw t2,(t1)
+ nop
+ and t2,t0
+diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
+index 81a13fd56d13..2bea5db01b0b 100644
+--- a/arch/mips/kernel/ptrace.c
++++ b/arch/mips/kernel/ptrace.c
+@@ -484,7 +484,8 @@ static int fpr_set(struct task_struct *target,
+ &target->thread.fpu,
+ 0, sizeof(elf_fpregset_t));
+
+- for (i = 0; i < NUM_FPU_REGS; i++) {
++ BUILD_BUG_ON(sizeof(fpr_val) != sizeof(elf_fpreg_t));
++ for (i = 0; i < NUM_FPU_REGS && count >= sizeof(elf_fpreg_t); i++) {
+ err = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &fpr_val, i * sizeof(elf_fpreg_t),
+ (i + 1) * sizeof(elf_fpreg_t));
+diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
+index d01ade63492f..7e2279ac6c0d 100644
+--- a/arch/mips/lantiq/irq.c
++++ b/arch/mips/lantiq/irq.c
+@@ -269,6 +269,11 @@ static void ltq_hw5_irqdispatch(void)
+ DEFINE_HWx_IRQDISPATCH(5)
+ #endif
+
++static void ltq_hw_irq_handler(struct irq_desc *desc)
++{
++ ltq_hw_irqdispatch(irq_desc_get_irq(desc) - 2);
++}
++
+ #ifdef CONFIG_MIPS_MT_SMP
+ void __init arch_init_ipiirq(int irq, struct irqaction *action)
+ {
+@@ -313,23 +318,19 @@ static struct irqaction irq_call = {
+ asmlinkage void plat_irq_dispatch(void)
+ {
+ unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
+- unsigned int i;
+-
+- if ((MIPS_CPU_TIMER_IRQ == 7) && (pending & CAUSEF_IP7)) {
+- do_IRQ(MIPS_CPU_TIMER_IRQ);
+- goto out;
+- } else {
+- for (i = 0; i < MAX_IM; i++) {
+- if (pending & (CAUSEF_IP2 << i)) {
+- ltq_hw_irqdispatch(i);
+- goto out;
+- }
+- }
++ int irq;
++
++ if (!pending) {
++ spurious_interrupt();
++ return;
+ }
+- pr_alert("Spurious IRQ: CAUSE=0x%08x\n", read_c0_status());
+
+-out:
+- return;
++ pending >>= CAUSEB_IP;
++ while (pending) {
++ irq = fls(pending) - 1;
++ do_IRQ(MIPS_CPU_IRQ_BASE + irq);
++ pending &= ~BIT(irq);
++ }
+ }
+
+ static int icu_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
+@@ -354,11 +355,6 @@ static const struct irq_domain_ops irq_domain_ops = {
+ .map = icu_map,
+ };
+
+-static struct irqaction cascade = {
+- .handler = no_action,
+- .name = "cascade",
+-};
+-
+ int __init icu_of_init(struct device_node *node, struct device_node *parent)
+ {
+ struct device_node *eiu_node;
+@@ -390,7 +386,7 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
+ mips_cpu_irq_init();
+
+ for (i = 0; i < MAX_IM; i++)
+- setup_irq(i + 2, &cascade);
++ irq_set_chained_handler(i + 2, ltq_hw_irq_handler);
+
+ if (cpu_has_vint) {
+ pr_info("Setting up vectored interrupts\n");
+diff --git a/arch/mips/mm/sc-ip22.c b/arch/mips/mm/sc-ip22.c
+index dc7c5a5214a9..203e4661bc81 100644
+--- a/arch/mips/mm/sc-ip22.c
++++ b/arch/mips/mm/sc-ip22.c
+@@ -31,26 +31,29 @@ static inline void indy_sc_wipe(unsigned long first, unsigned long last)
+ unsigned long tmp;
+
+ __asm__ __volatile__(
+- ".set\tpush\t\t\t# indy_sc_wipe\n\t"
+- ".set\tnoreorder\n\t"
+- ".set\tmips3\n\t"
+- ".set\tnoat\n\t"
+- "mfc0\t%2, $12\n\t"
+- "li\t$1, 0x80\t\t\t# Go 64 bit\n\t"
+- "mtc0\t$1, $12\n\t"
+-
+- "dli\t$1, 0x9000000080000000\n\t"
+- "or\t%0, $1\t\t\t# first line to flush\n\t"
+- "or\t%1, $1\t\t\t# last line to flush\n\t"
+- ".set\tat\n\t"
+-
+- "1:\tsw\t$0, 0(%0)\n\t"
+- "bne\t%0, %1, 1b\n\t"
+- " daddu\t%0, 32\n\t"
+-
+- "mtc0\t%2, $12\t\t\t# Back to 32 bit\n\t"
+- "nop; nop; nop; nop;\n\t"
+- ".set\tpop"
++ " .set push # indy_sc_wipe \n"
++ " .set noreorder \n"
++ " .set mips3 \n"
++ " .set noat \n"
++ " mfc0 %2, $12 \n"
++ " li $1, 0x80 # Go 64 bit \n"
++ " mtc0 $1, $12 \n"
++ " \n"
++ " dli $1, 0x9000000080000000 \n"
++ " or %0, $1 # first line to flush \n"
++ " or %1, $1 # last line to flush \n"
++ " .set at \n"
++ " \n"
++ "1: sw $0, 0(%0) \n"
++ " bne %0, %1, 1b \n"
++ " daddu %0, 32 \n"
++ " \n"
++ " mtc0 %2, $12 # Back to 32 bit \n"
++ " nop # pipeline hazard \n"
++ " nop \n"
++ " nop \n"
++ " nop \n"
++ " .set pop \n"
+ : "=r" (first), "=r" (last), "=&r" (tmp)
+ : "0" (first), "1" (last));
+ }
+diff --git a/arch/mips/ralink/prom.c b/arch/mips/ralink/prom.c
+index 09419f67da39..bdfc253958f4 100644
+--- a/arch/mips/ralink/prom.c
++++ b/arch/mips/ralink/prom.c
+@@ -25,8 +25,10 @@ const char *get_system_type(void)
+ return soc_info.sys_type;
+ }
+
+-static __init void prom_init_cmdline(int argc, char **argv)
++static __init void prom_init_cmdline(void)
+ {
++ int argc;
++ char **argv;
+ int i;
+
+ pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
+@@ -55,14 +57,11 @@ static __init void prom_init_cmdline(int argc, char **argv)
+
+ void __init prom_init(void)
+ {
+- int argc;
+- char **argv;
+-
+ prom_soc_init(&soc_info);
+
+ pr_info("SoC Type: %s\n", get_system_type());
+
+- prom_init_cmdline(argc, argv);
++ prom_init_cmdline();
+ }
+
+ void __init prom_free_prom_memory(void)
+diff --git a/arch/mips/ralink/rt288x.c b/arch/mips/ralink/rt288x.c
+index 738cec865f41..1bd7d704b01b 100644
+--- a/arch/mips/ralink/rt288x.c
++++ b/arch/mips/ralink/rt288x.c
+@@ -40,16 +40,6 @@ static struct rt2880_pmx_group rt2880_pinmux_data_act[] = {
+ { 0 }
+ };
+
+-static void rt288x_wdt_reset(void)
+-{
+- u32 t;
+-
+- /* enable WDT reset output on pin SRAM_CS_N */
+- t = rt_sysc_r32(SYSC_REG_CLKCFG);
+- t |= CLKCFG_SRAM_CS_N_WDT;
+- rt_sysc_w32(t, SYSC_REG_CLKCFG);
+-}
+-
+ void __init ralink_clk_init(void)
+ {
+ unsigned long cpu_rate, wmac_rate = 40000000;
+diff --git a/arch/mips/ralink/rt305x.c b/arch/mips/ralink/rt305x.c
+index c40776ab67db..28bf6fbe8b04 100644
+--- a/arch/mips/ralink/rt305x.c
++++ b/arch/mips/ralink/rt305x.c
+@@ -91,17 +91,6 @@ static struct rt2880_pmx_group rt5350_pinmux_data[] = {
+ { 0 }
+ };
+
+-static void rt305x_wdt_reset(void)
+-{
+- u32 t;
+-
+- /* enable WDT reset output on pin SRAM_CS_N */
+- t = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG);
+- t |= RT305X_SYSCFG_SRAM_CS0_MODE_WDT <<
+- RT305X_SYSCFG_SRAM_CS0_MODE_SHIFT;
+- rt_sysc_w32(t, SYSC_REG_SYSTEM_CONFIG);
+-}
+-
+ static unsigned long rt5350_get_mem_size(void)
+ {
+ void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT305X_SYSC_BASE);
+diff --git a/arch/mips/ralink/rt3883.c b/arch/mips/ralink/rt3883.c
+index 5bda39fea483..d7998819954a 100644
+--- a/arch/mips/ralink/rt3883.c
++++ b/arch/mips/ralink/rt3883.c
+@@ -63,16 +63,6 @@ static struct rt2880_pmx_group rt3883_pinmux_data[] = {
+ { 0 }
+ };
+
+-static void rt3883_wdt_reset(void)
+-{
+- u32 t;
+-
+- /* enable WDT reset output on GPIO 2 */
+- t = rt_sysc_r32(RT3883_SYSC_REG_SYSCFG1);
+- t |= RT3883_SYSCFG1_GPIO2_AS_WDT_OUT;
+- rt_sysc_w32(t, RT3883_SYSC_REG_SYSCFG1);
+-}
+-
+ void __init ralink_clk_init(void)
+ {
+ unsigned long cpu_rate, sys_rate;
+diff --git a/arch/mips/sgi-ip22/Platform b/arch/mips/sgi-ip22/Platform
+index b7a4b7e04c38..e8f6b3a42a48 100644
+--- a/arch/mips/sgi-ip22/Platform
++++ b/arch/mips/sgi-ip22/Platform
+@@ -25,7 +25,7 @@ endif
+ # Simplified: what IP22 does at 128MB+ in ksegN, IP28 does at 512MB+ in xkphys
+ #
+ ifdef CONFIG_SGI_IP28
+- ifeq ($(call cc-option-yn,-mr10k-cache-barrier=store), n)
++ ifeq ($(call cc-option-yn,-march=r10000 -mr10k-cache-barrier=store), n)
+ $(error gcc doesn't support needed option -mr10k-cache-barrier=store)
+ endif
+ endif
+diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
+index 5cc6b4f1b795..1a836afb636d 100644
+--- a/arch/openrisc/include/asm/uaccess.h
++++ b/arch/openrisc/include/asm/uaccess.h
+@@ -215,7 +215,7 @@ do { \
+ case 1: __get_user_asm(x, ptr, retval, "l.lbz"); break; \
+ case 2: __get_user_asm(x, ptr, retval, "l.lhz"); break; \
+ case 4: __get_user_asm(x, ptr, retval, "l.lwz"); break; \
+- case 8: __get_user_asm2(x, ptr, retval); \
++ case 8: __get_user_asm2(x, ptr, retval); break; \
+ default: (x) = __get_user_bad(); \
+ } \
+ } while (0)
+diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
+index 5cc2e7af3a7b..b379146de55b 100644
+--- a/arch/powerpc/kvm/emulate.c
++++ b/arch/powerpc/kvm/emulate.c
+@@ -302,7 +302,6 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
+ advance = 0;
+ printk(KERN_ERR "Couldn't emulate instruction 0x%08x "
+ "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst));
+- kvmppc_core_queue_program(vcpu, 0);
+ }
+ }
+
+diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
+index ec2eb20631d1..14ac699d30aa 100644
+--- a/arch/powerpc/perf/hv-24x7.c
++++ b/arch/powerpc/perf/hv-24x7.c
+@@ -503,7 +503,7 @@ static int memord(const void *d1, size_t s1, const void *d2, size_t s2)
+ {
+ if (s1 < s2)
+ return 1;
+- if (s2 > s1)
++ if (s1 > s2)
+ return -1;
+
+ return memcmp(d1, d2, s1);
+diff --git a/arch/powerpc/platforms/powernv/opal-async.c b/arch/powerpc/platforms/powernv/opal-async.c
+index 693b6cdac691..3fcaa9ef447b 100644
+--- a/arch/powerpc/platforms/powernv/opal-async.c
++++ b/arch/powerpc/platforms/powernv/opal-async.c
+@@ -39,18 +39,18 @@ int __opal_async_get_token(void)
+ int token;
+
+ spin_lock_irqsave(&opal_async_comp_lock, flags);
+- token = find_first_bit(opal_async_complete_map, opal_max_async_tokens);
++ token = find_first_zero_bit(opal_async_token_map, opal_max_async_tokens);
+ if (token >= opal_max_async_tokens) {
+ token = -EBUSY;
+ goto out;
+ }
+
+- if (__test_and_set_bit(token, opal_async_token_map)) {
++ if (!__test_and_clear_bit(token, opal_async_complete_map)) {
+ token = -EBUSY;
+ goto out;
+ }
+
+- __clear_bit(token, opal_async_complete_map);
++ __set_bit(token, opal_async_token_map);
+
+ out:
+ spin_unlock_irqrestore(&opal_async_comp_lock, flags);
+diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
+index 16fdcb23f4c3..20974478f8d0 100644
+--- a/arch/powerpc/platforms/powernv/setup.c
++++ b/arch/powerpc/platforms/powernv/setup.c
+@@ -469,7 +469,7 @@ static unsigned long pnv_get_proc_freq(unsigned int cpu)
+ {
+ unsigned long ret_freq;
+
+- ret_freq = cpufreq_quick_get(cpu) * 1000ul;
++ ret_freq = cpufreq_get(cpu) * 1000ul;
+
+ /*
+ * If the backend cpufreq driver does not exist,
+diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c
+index ee90db17b097..1629dd5aaacb 100644
+--- a/arch/powerpc/sysdev/axonram.c
++++ b/arch/powerpc/sysdev/axonram.c
+@@ -274,7 +274,9 @@ failed:
+ if (bank->disk->major > 0)
+ unregister_blkdev(bank->disk->major,
+ bank->disk->disk_name);
+- del_gendisk(bank->disk);
++ if (bank->disk->flags & GENHD_FL_UP)
++ del_gendisk(bank->disk);
++ put_disk(bank->disk);
+ }
+ device->dev.platform_data = NULL;
+ if (bank->io_addr != 0)
+@@ -299,6 +301,7 @@ axon_ram_remove(struct platform_device *device)
+ device_remove_file(&device->dev, &dev_attr_ecc);
+ free_irq(bank->irq_id, device);
+ del_gendisk(bank->disk);
++ put_disk(bank->disk);
+ iounmap((void __iomem *) bank->io_addr);
+ kfree(bank);
+
+diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
+index b28733727ed3..2e41a73ad80a 100644
+--- a/arch/powerpc/sysdev/ipic.c
++++ b/arch/powerpc/sysdev/ipic.c
+@@ -843,12 +843,12 @@ void ipic_disable_mcp(enum ipic_mcp_irq mcp_irq)
+
+ u32 ipic_get_mcp_status(void)
+ {
+- return ipic_read(primary_ipic->regs, IPIC_SERMR);
++ return ipic_read(primary_ipic->regs, IPIC_SERSR);
+ }
+
+ void ipic_clear_mcp_status(u32 mask)
+ {
+- ipic_write(primary_ipic->regs, IPIC_SERMR, mask);
++ ipic_write(primary_ipic->regs, IPIC_SERSR, mask);
+ }
+
+ /* Return an interrupt vector or NO_IRQ if no interrupt is pending. */
+diff --git a/arch/s390/include/asm/pci_insn.h b/arch/s390/include/asm/pci_insn.h
+index 649eb62c52b3..9e02cb7955c1 100644
+--- a/arch/s390/include/asm/pci_insn.h
++++ b/arch/s390/include/asm/pci_insn.h
+@@ -81,6 +81,6 @@ int zpci_refresh_trans(u64 fn, u64 addr, u64 range);
+ int zpci_load(u64 *data, u64 req, u64 offset);
+ int zpci_store(u64 data, u64 req, u64 offset);
+ int zpci_store_block(const u64 *data, u64 req, u64 offset);
+-void zpci_set_irq_ctrl(u16 ctl, char *unused, u8 isc);
++int zpci_set_irq_ctrl(u16 ctl, char *unused, u8 isc);
+
+ #endif
+diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
+index 1942f22e6694..208511437a28 100644
+--- a/arch/s390/kernel/setup.c
++++ b/arch/s390/kernel/setup.c
+@@ -801,10 +801,10 @@ static void __init setup_randomness(void)
+ {
+ struct sysinfo_3_2_2 *vmms;
+
+- vmms = (struct sysinfo_3_2_2 *) alloc_page(GFP_KERNEL);
+- if (vmms && stsi(vmms, 3, 2, 2) == 0 && vmms->count)
+- add_device_randomness(&vmms, vmms->count);
+- free_page((unsigned long) vmms);
++ vmms = (struct sysinfo_3_2_2 *) memblock_alloc(PAGE_SIZE, PAGE_SIZE);
++ if (stsi(vmms, 3, 2, 2) == 0 && vmms->count)
++ add_device_randomness(&vmms->vm, sizeof(vmms->vm[0]) * vmms->count);
++ memblock_free((unsigned long) vmms, PAGE_SIZE);
+ }
+
+ /*
+diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
+index 50a79a5fc116..666baac18ff0 100644
+--- a/arch/s390/pci/pci.c
++++ b/arch/s390/pci/pci.c
+@@ -364,7 +364,8 @@ static void zpci_irq_handler(struct airq_struct *airq)
+ /* End of second scan with interrupts on. */
+ break;
+ /* First scan complete, reenable interrupts. */
+- zpci_set_irq_ctrl(SIC_IRQ_MODE_SINGLE, NULL, PCI_ISC);
++ if (zpci_set_irq_ctrl(SIC_IRQ_MODE_SINGLE, NULL, PCI_ISC))
++ break;
+ si = 0;
+ continue;
+ }
+@@ -922,7 +923,7 @@ static int __init pci_base_init(void)
+ if (!s390_pci_probe)
+ return 0;
+
+- if (!test_facility(69) || !test_facility(71) || !test_facility(72))
++ if (!test_facility(69) || !test_facility(71))
+ return 0;
+
+ rc = zpci_debug_init();
+diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
+index 6fd8d5836138..888cc878efaa 100644
+--- a/arch/s390/pci/pci_dma.c
++++ b/arch/s390/pci/pci_dma.c
+@@ -432,7 +432,7 @@ int zpci_dma_init_device(struct zpci_dev *zdev)
+ zdev->dma_table = dma_alloc_cpu_table();
+ if (!zdev->dma_table) {
+ rc = -ENOMEM;
+- goto out_clean;
++ goto out;
+ }
+
+ zdev->iommu_size = (unsigned long) high_memory - PAGE_OFFSET;
+@@ -440,7 +440,7 @@ int zpci_dma_init_device(struct zpci_dev *zdev)
+ zdev->iommu_bitmap = vzalloc(zdev->iommu_pages / 8);
+ if (!zdev->iommu_bitmap) {
+ rc = -ENOMEM;
+- goto out_reg;
++ goto free_dma_table;
+ }
+
+ rc = zpci_register_ioat(zdev,
+@@ -449,12 +449,16 @@ int zpci_dma_init_device(struct zpci_dev *zdev)
+ zdev->start_dma + zdev->iommu_size - 1,
+ (u64) zdev->dma_table);
+ if (rc)
+- goto out_reg;
+- return 0;
++ goto free_bitmap;
+
+-out_reg:
++ return 0;
++free_bitmap:
++ vfree(zdev->iommu_bitmap);
++ zdev->iommu_bitmap = NULL;
++free_dma_table:
+ dma_free_cpu_table(zdev->dma_table);
+-out_clean:
++ zdev->dma_table = NULL;
++out:
+ return rc;
+ }
+
+diff --git a/arch/s390/pci/pci_insn.c b/arch/s390/pci/pci_insn.c
+index 85267c058af8..abccf44c1e65 100644
+--- a/arch/s390/pci/pci_insn.c
++++ b/arch/s390/pci/pci_insn.c
+@@ -7,6 +7,7 @@
+ #include <linux/export.h>
+ #include <linux/errno.h>
+ #include <linux/delay.h>
++#include <asm/facility.h>
+ #include <asm/pci_insn.h>
+ #include <asm/processor.h>
+
+@@ -78,11 +79,14 @@ int zpci_refresh_trans(u64 fn, u64 addr, u64 range)
+ }
+
+ /* Set Interruption Controls */
+-void zpci_set_irq_ctrl(u16 ctl, char *unused, u8 isc)
++int zpci_set_irq_ctrl(u16 ctl, char *unused, u8 isc)
+ {
++ if (!test_facility(72))
++ return -EIO;
+ asm volatile (
+ " .insn rsy,0xeb00000000d1,%[ctl],%[isc],%[u]\n"
+ : : [ctl] "d" (ctl), [isc] "d" (isc << 27), [u] "Q" (*unused));
++ return 0;
+ }
+
+ /* PCI Load */
+diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
+index 9ddc4928a089..c1566170964f 100644
+--- a/arch/sparc/kernel/ptrace_64.c
++++ b/arch/sparc/kernel/ptrace_64.c
+@@ -311,7 +311,7 @@ static int genregs64_set(struct task_struct *target,
+ }
+
+ if (!ret) {
+- unsigned long y;
++ unsigned long y = regs->y;
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &y,
+diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
+index 214da575fdc5..49646684b42c 100644
+--- a/arch/sparc/mm/init_64.c
++++ b/arch/sparc/mm/init_64.c
+@@ -2285,9 +2285,16 @@ void __init mem_init(void)
+ {
+ high_memory = __va(last_valid_pfn << PAGE_SHIFT);
+
+- register_page_bootmem_info();
+ free_all_bootmem();
+
++ /*
++ * Must be done after boot memory is put on freelist, because here we
++ * might set fields in deferred struct pages that have not yet been
++ * initialized, and free_all_bootmem() initializes all the reserved
++ * deferred pages for us.
++ */
++ register_page_bootmem_info();
++
+ /*
+ * Set up the zero page, mark it reserved, so that page count
+ * is not manipulated when freeing the page from user ptes.
+diff --git a/arch/x86/crypto/ghash-clmulni-intel_glue.c b/arch/x86/crypto/ghash-clmulni-intel_glue.c
+index daf8d2b9a217..b7ef6e202bb7 100644
+--- a/arch/x86/crypto/ghash-clmulni-intel_glue.c
++++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c
+@@ -219,6 +219,29 @@ static int ghash_async_final(struct ahash_request *req)
+ }
+ }
+
++static int ghash_async_import(struct ahash_request *req, const void *in)
++{
++ struct ahash_request *cryptd_req = ahash_request_ctx(req);
++ struct shash_desc *desc = cryptd_shash_desc(cryptd_req);
++ struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
++
++ ghash_async_init(req);
++ memcpy(dctx, in, sizeof(*dctx));
++ return 0;
++
++}
++
++static int ghash_async_export(struct ahash_request *req, void *out)
++{
++ struct ahash_request *cryptd_req = ahash_request_ctx(req);
++ struct shash_desc *desc = cryptd_shash_desc(cryptd_req);
++ struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
++
++ memcpy(out, dctx, sizeof(*dctx));
++ return 0;
++
++}
++
+ static int ghash_async_digest(struct ahash_request *req)
+ {
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+@@ -288,8 +311,11 @@ static struct ahash_alg ghash_async_alg = {
+ .final = ghash_async_final,
+ .setkey = ghash_async_setkey,
+ .digest = ghash_async_digest,
++ .export = ghash_async_export,
++ .import = ghash_async_import,
+ .halg = {
+ .digestsize = GHASH_DIGEST_SIZE,
++ .statesize = sizeof(struct ghash_desc_ctx),
+ .base = {
+ .cra_name = "ghash",
+ .cra_driver_name = "ghash-clmulni",
+diff --git a/arch/x86/crypto/salsa20_glue.c b/arch/x86/crypto/salsa20_glue.c
+index 399a29d067d6..cb91a64a99e7 100644
+--- a/arch/x86/crypto/salsa20_glue.c
++++ b/arch/x86/crypto/salsa20_glue.c
+@@ -59,13 +59,6 @@ static int encrypt(struct blkcipher_desc *desc,
+
+ salsa20_ivsetup(ctx, walk.iv);
+
+- if (likely(walk.nbytes == nbytes))
+- {
+- salsa20_encrypt_bytes(ctx, walk.src.virt.addr,
+- walk.dst.virt.addr, nbytes);
+- return blkcipher_walk_done(desc, &walk, 0);
+- }
+-
+ while (walk.nbytes >= 64) {
+ salsa20_encrypt_bytes(ctx, walk.src.virt.addr,
+ walk.dst.virt.addr,
+diff --git a/arch/x86/kernel/kprobes/ftrace.c b/arch/x86/kernel/kprobes/ftrace.c
+index 5f8f0b3cc674..2c0b0b645a74 100644
+--- a/arch/x86/kernel/kprobes/ftrace.c
++++ b/arch/x86/kernel/kprobes/ftrace.c
+@@ -26,7 +26,7 @@
+ #include "common.h"
+
+ static nokprobe_inline
+-int __skip_singlestep(struct kprobe *p, struct pt_regs *regs,
++void __skip_singlestep(struct kprobe *p, struct pt_regs *regs,
+ struct kprobe_ctlblk *kcb, unsigned long orig_ip)
+ {
+ /*
+@@ -41,20 +41,21 @@ int __skip_singlestep(struct kprobe *p, struct pt_regs *regs,
+ __this_cpu_write(current_kprobe, NULL);
+ if (orig_ip)
+ regs->ip = orig_ip;
+- return 1;
+ }
+
+ int skip_singlestep(struct kprobe *p, struct pt_regs *regs,
+ struct kprobe_ctlblk *kcb)
+ {
+- if (kprobe_ftrace(p))
+- return __skip_singlestep(p, regs, kcb, 0);
+- else
+- return 0;
++ if (kprobe_ftrace(p)) {
++ __skip_singlestep(p, regs, kcb, 0);
++ preempt_enable_no_resched();
++ return 1;
++ }
++ return 0;
+ }
+ NOKPROBE_SYMBOL(skip_singlestep);
+
+-/* Ftrace callback handler for kprobes */
++/* Ftrace callback handler for kprobes -- called under preepmt disabed */
+ void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
+ struct ftrace_ops *ops, struct pt_regs *regs)
+ {
+@@ -77,13 +78,17 @@ void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
+ /* Kprobe handler expects regs->ip = ip + 1 as breakpoint hit */
+ regs->ip = ip + sizeof(kprobe_opcode_t);
+
++ /* To emulate trap based kprobes, preempt_disable here */
++ preempt_disable();
+ __this_cpu_write(current_kprobe, p);
+ kcb->kprobe_status = KPROBE_HIT_ACTIVE;
+- if (!p->pre_handler || !p->pre_handler(p, regs))
++ if (!p->pre_handler || !p->pre_handler(p, regs)) {
+ __skip_singlestep(p, regs, kcb, orig_ip);
++ preempt_enable_no_resched();
++ }
+ /*
+ * If pre_handler returns !0, it sets regs->ip and
+- * resets current kprobe.
++ * resets current kprobe, and keep preempt count +1.
+ */
+ }
+ end:
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 665b10a55b30..84f2825f19b5 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -3354,7 +3354,7 @@ static void fix_rmode_seg(int seg, struct kvm_segment *save)
+ }
+
+ vmcs_write16(sf->selector, var.selector);
+- vmcs_write32(sf->base, var.base);
++ vmcs_writel(sf->base, var.base);
+ vmcs_write32(sf->limit, var.limit);
+ vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(&var));
+ }
+@@ -6075,12 +6075,7 @@ static __init int hardware_setup(void)
+ memset(vmx_vmread_bitmap, 0xff, PAGE_SIZE);
+ memset(vmx_vmwrite_bitmap, 0xff, PAGE_SIZE);
+
+- /*
+- * Allow direct access to the PC debug port (it is often used for I/O
+- * delays, but the vmexits simply slow things down).
+- */
+ memset(vmx_io_bitmap_a, 0xff, PAGE_SIZE);
+- clear_bit(0x80, vmx_io_bitmap_a);
+
+ memset(vmx_io_bitmap_b, 0xff, PAGE_SIZE);
+
+@@ -10140,8 +10135,10 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
+ */
+ static void vmx_leave_nested(struct kvm_vcpu *vcpu)
+ {
+- if (is_guest_mode(vcpu))
++ if (is_guest_mode(vcpu)) {
++ to_vmx(vcpu)->nested.nested_run_pending = 0;
+ nested_vmx_vmexit(vcpu, -1, 0, 0);
++ }
+ free_nested(to_vmx(vcpu));
+ }
+
+diff --git a/arch/x86/pci/broadcom_bus.c b/arch/x86/pci/broadcom_bus.c
+index bb461cfd01ab..526536c81ddc 100644
+--- a/arch/x86/pci/broadcom_bus.c
++++ b/arch/x86/pci/broadcom_bus.c
+@@ -97,7 +97,7 @@ static int __init broadcom_postcore_init(void)
+ * We should get host bridge information from ACPI unless the BIOS
+ * doesn't support it.
+ */
+- if (acpi_os_get_root_pointer())
++ if (!acpi_disabled && acpi_os_get_root_pointer())
+ return 0;
+ #endif
+
+diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
+index 55b6f15dac90..3356fd91bc61 100644
+--- a/block/scsi_ioctl.c
++++ b/block/scsi_ioctl.c
+@@ -182,6 +182,9 @@ static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
+ __set_bit(WRITE_16, filter->write_ok);
+ __set_bit(WRITE_LONG, filter->write_ok);
+ __set_bit(WRITE_LONG_2, filter->write_ok);
++ __set_bit(WRITE_SAME, filter->write_ok);
++ __set_bit(WRITE_SAME_16, filter->write_ok);
++ __set_bit(WRITE_SAME_32, filter->write_ok);
+ __set_bit(ERASE, filter->write_ok);
+ __set_bit(GPCMD_MODE_SELECT_10, filter->write_ok);
+ __set_bit(MODE_SELECT, filter->write_ok);
+diff --git a/crypto/Makefile b/crypto/Makefile
+index 97b7d3ac87e7..16766ced6a44 100644
+--- a/crypto/Makefile
++++ b/crypto/Makefile
+@@ -47,6 +47,7 @@ obj-$(CONFIG_CRYPTO_SHA1) += sha1_generic.o
+ obj-$(CONFIG_CRYPTO_SHA256) += sha256_generic.o
+ obj-$(CONFIG_CRYPTO_SHA512) += sha512_generic.o
+ obj-$(CONFIG_CRYPTO_WP512) += wp512.o
++CFLAGS_wp512.o := $(call cc-option,-fno-schedule-insns) # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79149
+ obj-$(CONFIG_CRYPTO_TGR192) += tgr192.o
+ obj-$(CONFIG_CRYPTO_GF128MUL) += gf128mul.o
+ obj-$(CONFIG_CRYPTO_ECB) += ecb.o
+@@ -68,6 +69,7 @@ obj-$(CONFIG_CRYPTO_BLOWFISH_COMMON) += blowfish_common.o
+ obj-$(CONFIG_CRYPTO_TWOFISH) += twofish_generic.o
+ obj-$(CONFIG_CRYPTO_TWOFISH_COMMON) += twofish_common.o
+ obj-$(CONFIG_CRYPTO_SERPENT) += serpent_generic.o
++CFLAGS_serpent_generic.o := $(call cc-option,-fsched-pressure) # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79149
+ obj-$(CONFIG_CRYPTO_AES) += aes_generic.o
+ obj-$(CONFIG_CRYPTO_CAMELLIA) += camellia_generic.o
+ obj-$(CONFIG_CRYPTO_CAST_COMMON) += cast_common.o
+diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
+index d7a3435280d8..db83dabe5fc9 100644
+--- a/crypto/algif_hash.c
++++ b/crypto/algif_hash.c
+@@ -184,7 +184,7 @@ static int hash_accept(struct socket *sock, struct socket *newsock, int flags)
+ struct alg_sock *ask = alg_sk(sk);
+ struct hash_ctx *ctx = ask->private;
+ struct ahash_request *req = &ctx->req;
+- char state[crypto_ahash_statesize(crypto_ahash_reqtfm(req))];
++ char state[crypto_ahash_statesize(crypto_ahash_reqtfm(req)) ? : 1];
+ struct sock *sk2;
+ struct alg_sock *ask2;
+ struct hash_ctx *ctx2;
+diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
+index 1995d6d962f5..2eac68e51433 100644
+--- a/crypto/asymmetric_keys/x509_cert_parser.c
++++ b/crypto/asymmetric_keys/x509_cert_parser.c
+@@ -399,6 +399,8 @@ int x509_extract_key_data(void *context, size_t hdrlen,
+ ctx->cert->pub->pkey_algo = PKEY_ALGO_RSA;
+
+ /* Discard the BIT STRING metadata */
++ if (vlen < 1 || *(const u8 *)value != 0)
++ return -EBADMSG;
+ ctx->key = value + 1;
+ ctx->key_size = vlen - 1;
+ return 0;
+diff --git a/crypto/cryptd.c b/crypto/cryptd.c
+index 34e4dfafb94f..66c9e8262572 100644
+--- a/crypto/cryptd.c
++++ b/crypto/cryptd.c
+@@ -633,6 +633,7 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
+ inst->alg.halg.base.cra_flags = type;
+
+ inst->alg.halg.digestsize = salg->digestsize;
++ inst->alg.halg.statesize = salg->statesize;
+ inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx);
+
+ inst->alg.halg.base.cra_init = cryptd_hash_init_tfm;
+diff --git a/crypto/hmac.c b/crypto/hmac.c
+index 72e38c098bb3..ba07fb6221ae 100644
+--- a/crypto/hmac.c
++++ b/crypto/hmac.c
+@@ -194,11 +194,15 @@ static int hmac_create(struct crypto_template *tmpl, struct rtattr **tb)
+ salg = shash_attr_alg(tb[1], 0, 0);
+ if (IS_ERR(salg))
+ return PTR_ERR(salg);
++ alg = &salg->base;
+
++ /* The underlying hash algorithm must be unkeyed */
+ err = -EINVAL;
++ if (crypto_shash_alg_has_setkey(salg))
++ goto out_put_alg;
++
+ ds = salg->digestsize;
+ ss = salg->statesize;
+- alg = &salg->base;
+ if (ds > alg->cra_blocksize ||
+ ss < alg->cra_blocksize)
+ goto out_put_alg;
+diff --git a/crypto/mcryptd.c b/crypto/mcryptd.c
+index fe5b495a434d..cfb68a889ef6 100644
+--- a/crypto/mcryptd.c
++++ b/crypto/mcryptd.c
+@@ -526,6 +526,7 @@ static int mcryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
+ inst->alg.halg.base.cra_flags = type;
+
+ inst->alg.halg.digestsize = salg->digestsize;
++ inst->alg.halg.statesize = salg->statesize;
+ inst->alg.halg.base.cra_ctxsize = sizeof(struct mcryptd_hash_ctx);
+
+ inst->alg.halg.base.cra_init = mcryptd_hash_init_tfm;
+diff --git a/crypto/salsa20_generic.c b/crypto/salsa20_generic.c
+index f550b5d94630..d7da0eea5622 100644
+--- a/crypto/salsa20_generic.c
++++ b/crypto/salsa20_generic.c
+@@ -188,13 +188,6 @@ static int encrypt(struct blkcipher_desc *desc,
+
+ salsa20_ivsetup(ctx, walk.iv);
+
+- if (likely(walk.nbytes == nbytes))
+- {
+- salsa20_encrypt_bytes(ctx, walk.dst.virt.addr,
+- walk.src.virt.addr, nbytes);
+- return blkcipher_walk_done(desc, &walk, 0);
+- }
+-
+ while (walk.nbytes >= 64) {
+ salsa20_encrypt_bytes(ctx, walk.dst.virt.addr,
+ walk.src.virt.addr,
+diff --git a/crypto/shash.c b/crypto/shash.c
+index 17510eaf0a36..73c065321867 100644
+--- a/crypto/shash.c
++++ b/crypto/shash.c
+@@ -24,11 +24,12 @@
+
+ static const struct crypto_type crypto_shash_type;
+
+-static int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
+- unsigned int keylen)
++int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
++ unsigned int keylen)
+ {
+ return -ENOSYS;
+ }
++EXPORT_SYMBOL_GPL(shash_no_setkey);
+
+ static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key,
+ unsigned int keylen)
+diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
+index cc79d3fedfb2..493811b895bd 100644
+--- a/drivers/acpi/video.c
++++ b/drivers/acpi/video.c
+@@ -1276,6 +1276,9 @@ static int acpi_video_device_enumerate(struct acpi_video_bus *video)
+ union acpi_object *dod = NULL;
+ union acpi_object *obj;
+
++ if (!video->cap._DOD)
++ return AE_NOT_EXIST;
++
+ status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer);
+ if (!ACPI_SUCCESS(status)) {
+ ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD"));
+diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
+index 7dbba387d12a..18de4c457068 100644
+--- a/drivers/ata/libata-sff.c
++++ b/drivers/ata/libata-sff.c
+@@ -1480,7 +1480,6 @@ unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)
+ break;
+
+ default:
+- WARN_ON_ONCE(1);
+ return AC_ERR_SYSTEM;
+ }
+
+diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c
+index 527bbd595e37..d9b762a62e25 100644
+--- a/drivers/atm/horizon.c
++++ b/drivers/atm/horizon.c
+@@ -2804,7 +2804,7 @@ out:
+ return err;
+
+ out_free_irq:
+- free_irq(dev->irq, dev);
++ free_irq(irq, dev);
+ out_free:
+ kfree(dev);
+ out_release:
+diff --git a/drivers/base/isa.c b/drivers/base/isa.c
+index 91dba65d7264..901d8185309e 100644
+--- a/drivers/base/isa.c
++++ b/drivers/base/isa.c
+@@ -39,7 +39,7 @@ static int isa_bus_probe(struct device *dev)
+ {
+ struct isa_driver *isa_driver = dev->platform_data;
+
+- if (isa_driver->probe)
++ if (isa_driver && isa_driver->probe)
+ return isa_driver->probe(dev, to_isa_dev(dev)->id);
+
+ return 0;
+@@ -49,7 +49,7 @@ static int isa_bus_remove(struct device *dev)
+ {
+ struct isa_driver *isa_driver = dev->platform_data;
+
+- if (isa_driver->remove)
++ if (isa_driver && isa_driver->remove)
+ return isa_driver->remove(dev, to_isa_dev(dev)->id);
+
+ return 0;
+@@ -59,7 +59,7 @@ static void isa_bus_shutdown(struct device *dev)
+ {
+ struct isa_driver *isa_driver = dev->platform_data;
+
+- if (isa_driver->shutdown)
++ if (isa_driver && isa_driver->shutdown)
+ isa_driver->shutdown(dev, to_isa_dev(dev)->id);
+ }
+
+@@ -67,7 +67,7 @@ static int isa_bus_suspend(struct device *dev, pm_message_t state)
+ {
+ struct isa_driver *isa_driver = dev->platform_data;
+
+- if (isa_driver->suspend)
++ if (isa_driver && isa_driver->suspend)
+ return isa_driver->suspend(dev, to_isa_dev(dev)->id, state);
+
+ return 0;
+@@ -77,7 +77,7 @@ static int isa_bus_resume(struct device *dev)
+ {
+ struct isa_driver *isa_driver = dev->platform_data;
+
+- if (isa_driver->resume)
++ if (isa_driver && isa_driver->resume)
+ return isa_driver->resume(dev, to_isa_dev(dev)->id);
+
+ return 0;
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index 0c13dfd1c29d..32f5b87fe93c 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -945,6 +945,10 @@ static int btusb_open(struct hci_dev *hdev)
+ return err;
+
+ data->intf->needs_remote_wakeup = 1;
++ /* device specific wakeup source enabled and required for USB
++ * remote wakeup while host is suspended
++ */
++ device_wakeup_enable(&data->udev->dev);
+
+ if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
+ goto done;
+@@ -1008,6 +1012,7 @@ static int btusb_close(struct hci_dev *hdev)
+ goto failed;
+
+ data->intf->needs_remote_wakeup = 0;
++ device_wakeup_disable(&data->udev->dev);
+ usb_autopm_put_interface(data->intf);
+
+ failed:
+diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c
+index 4d523cfe51ce..31342fccd290 100644
+--- a/drivers/bus/arm-ccn.c
++++ b/drivers/bus/arm-ccn.c
+@@ -1157,6 +1157,7 @@ static int arm_ccn_pmu_init(struct arm_ccn *ccn)
+
+ /* Perf driver registration */
+ ccn->dt.pmu = (struct pmu) {
++ .module = THIS_MODULE,
+ .attr_groups = arm_ccn_pmu_attr_groups,
+ .task_ctx_nr = perf_invalid_context,
+ .event_init = arm_ccn_pmu_event_init,
+diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
+index 696ef1d56b4f..5809567d3cf0 100644
+--- a/drivers/char/tpm/tpm_tis.c
++++ b/drivers/char/tpm/tpm_tis.c
+@@ -401,7 +401,7 @@ static void disable_interrupts(struct tpm_chip *chip)
+ iowrite32(intmask,
+ chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+- free_irq(chip->vendor.irq, chip);
++ devm_free_irq(chip->pdev, chip->vendor.irq, chip);
+ chip->vendor.irq = 0;
+ }
+
+diff --git a/drivers/clk/tegra/clk-tegra30.c b/drivers/clk/tegra/clk-tegra30.c
+index 4b26509fc218..803ef926d682 100644
+--- a/drivers/clk/tegra/clk-tegra30.c
++++ b/drivers/clk/tegra/clk-tegra30.c
+@@ -1064,7 +1064,7 @@ static void __init tegra30_super_clk_init(void)
+ * U71 divider of cclk_lp.
+ */
+ clk = tegra_clk_register_divider("pll_p_out3_cclklp", "pll_p_out3",
+- clk_base + SUPER_CCLKG_DIVIDER, 0,
++ clk_base + SUPER_CCLKLP_DIVIDER, 0,
+ TEGRA_DIVIDER_INT, 16, 8, 1, NULL);
+ clk_register_clkdev(clk, "pll_p_out3_cclklp", NULL);
+
+diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
+index 36d936fb259e..4f0c4a3cc5c5 100644
+--- a/drivers/crypto/s5p-sss.c
++++ b/drivers/crypto/s5p-sss.c
+@@ -682,8 +682,9 @@ static int s5p_aes_probe(struct platform_device *pdev)
+ dev_warn(dev, "feed control interrupt is not available.\n");
+ goto err_irq;
+ }
+- err = devm_request_irq(dev, pdata->irq_fc, s5p_aes_interrupt,
+- IRQF_SHARED, pdev->name, pdev);
++ err = devm_request_threaded_irq(dev, pdata->irq_fc, NULL,
++ s5p_aes_interrupt, IRQF_ONESHOT,
++ pdev->name, pdev);
+ if (err < 0) {
+ dev_warn(dev, "feed control interrupt is not available.\n");
+ goto err_irq;
+diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
+index 3ddfd1f6c23c..3345a0acc975 100644
+--- a/drivers/dma/dmaengine.c
++++ b/drivers/dma/dmaengine.c
+@@ -1002,12 +1002,14 @@ static struct dmaengine_unmap_pool *__get_unmap_pool(int nr)
+ switch (order) {
+ case 0 ... 1:
+ return &unmap_pool[0];
++#if IS_ENABLED(CONFIG_DMA_ENGINE_RAID)
+ case 2 ... 4:
+ return &unmap_pool[1];
+ case 5 ... 7:
+ return &unmap_pool[2];
+ case 8:
+ return &unmap_pool[3];
++#endif
+ default:
+ BUG();
+ return NULL;
+diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
+index 897ec0f8d718..2e9bc49d30ec 100644
+--- a/drivers/dma/dmatest.c
++++ b/drivers/dma/dmatest.c
+@@ -148,6 +148,12 @@ MODULE_PARM_DESC(run, "Run the test (default: false)");
+ #define PATTERN_OVERWRITE 0x20
+ #define PATTERN_COUNT_MASK 0x1f
+
++/* poor man's completion - we want to use wait_event_freezable() on it */
++struct dmatest_done {
++ bool done;
++ wait_queue_head_t *wait;
++};
++
+ struct dmatest_thread {
+ struct list_head node;
+ struct dmatest_info *info;
+@@ -156,6 +162,8 @@ struct dmatest_thread {
+ u8 **srcs;
+ u8 **dsts;
+ enum dma_transaction_type type;
++ wait_queue_head_t done_wait;
++ struct dmatest_done test_done;
+ bool done;
+ };
+
+@@ -316,18 +324,25 @@ static unsigned int dmatest_verify(u8 **bufs, unsigned int start,
+ return error_count;
+ }
+
+-/* poor man's completion - we want to use wait_event_freezable() on it */
+-struct dmatest_done {
+- bool done;
+- wait_queue_head_t *wait;
+-};
+
+ static void dmatest_callback(void *arg)
+ {
+ struct dmatest_done *done = arg;
+-
+- done->done = true;
+- wake_up_all(done->wait);
++ struct dmatest_thread *thread =
++ container_of(arg, struct dmatest_thread, done_wait);
++ if (!thread->done) {
++ done->done = true;
++ wake_up_all(done->wait);
++ } else {
++ /*
++ * If thread->done, it means that this callback occurred
++ * after the parent thread has cleaned up. This can
++ * happen in the case that driver doesn't implement
++ * the terminate_all() functionality and a dma operation
++ * did not occur within the timeout period
++ */
++ WARN(1, "dmatest: Kernel memory may be corrupted!!\n");
++ }
+ }
+
+ static unsigned int min_odd(unsigned int x, unsigned int y)
+@@ -398,9 +413,8 @@ static unsigned long long dmatest_KBs(s64 runtime, unsigned long long len)
+ */
+ static int dmatest_func(void *data)
+ {
+- DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_wait);
+ struct dmatest_thread *thread = data;
+- struct dmatest_done done = { .wait = &done_wait };
++ struct dmatest_done *done = &thread->test_done;
+ struct dmatest_info *info;
+ struct dmatest_params *params;
+ struct dma_chan *chan;
+@@ -605,9 +619,9 @@ static int dmatest_func(void *data)
+ continue;
+ }
+
+- done.done = false;
++ done->done = false;
+ tx->callback = dmatest_callback;
+- tx->callback_param = &done;
++ tx->callback_param = done;
+ cookie = tx->tx_submit(tx);
+
+ if (dma_submit_error(cookie)) {
+@@ -620,21 +634,12 @@ static int dmatest_func(void *data)
+ }
+ dma_async_issue_pending(chan);
+
+- wait_event_freezable_timeout(done_wait, done.done,
++ wait_event_freezable_timeout(thread->done_wait, done->done,
+ msecs_to_jiffies(params->timeout));
+
+ status = dma_async_is_tx_complete(chan, cookie, NULL, NULL);
+
+- if (!done.done) {
+- /*
+- * We're leaving the timed out dma operation with
+- * dangling pointer to done_wait. To make this
+- * correct, we'll need to allocate wait_done for
+- * each test iteration and perform "who's gonna
+- * free it this time?" dancing. For now, just
+- * leave it dangling.
+- */
+- WARN(1, "dmatest: Kernel stack may be corrupted!!\n");
++ if (!done->done) {
+ dmaengine_unmap_put(um);
+ result("test timed out", total_tests, src_off, dst_off,
+ len, 0);
+@@ -708,7 +713,7 @@ err_thread_type:
+ dmatest_KBs(runtime, total_len), ret);
+
+ /* terminate all transfers on specified channels */
+- if (ret)
++ if (ret || failed_tests)
+ dmaengine_terminate_all(chan);
+
+ thread->done = true;
+@@ -766,6 +771,8 @@ static int dmatest_add_threads(struct dmatest_info *info,
+ thread->info = info;
+ thread->chan = dtc->chan;
+ thread->type = type;
++ thread->test_done.wait = &thread->done_wait;
++ init_waitqueue_head(&thread->done_wait);
+ smp_wmb();
+ thread->task = kthread_create(dmatest_func, thread, "%s-%s%u",
+ dma_chan_name(chan), op, i);
+diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
+index 3dabc52b9615..cb731749205a 100644
+--- a/drivers/dma/pl330.c
++++ b/drivers/dma/pl330.c
+@@ -1651,7 +1651,6 @@ static bool _chan_ns(const struct pl330_dmac *pl330, int i)
+ static struct pl330_thread *pl330_request_channel(struct pl330_dmac *pl330)
+ {
+ struct pl330_thread *thrd = NULL;
+- unsigned long flags;
+ int chans, i;
+
+ if (pl330->state == DYING)
+@@ -1659,8 +1658,6 @@ static struct pl330_thread *pl330_request_channel(struct pl330_dmac *pl330)
+
+ chans = pl330->pcfg.num_chan;
+
+- spin_lock_irqsave(&pl330->lock, flags);
+-
+ for (i = 0; i < chans; i++) {
+ thrd = &pl330->channels[i];
+ if ((thrd->free) && (!_manager_ns(thrd) ||
+@@ -1678,8 +1675,6 @@ static struct pl330_thread *pl330_request_channel(struct pl330_dmac *pl330)
+ thrd = NULL;
+ }
+
+- spin_unlock_irqrestore(&pl330->lock, flags);
+-
+ return thrd;
+ }
+
+@@ -1697,7 +1692,6 @@ static inline void _free_event(struct pl330_thread *thrd, int ev)
+ static void pl330_release_channel(struct pl330_thread *thrd)
+ {
+ struct pl330_dmac *pl330;
+- unsigned long flags;
+
+ if (!thrd || thrd->free)
+ return;
+@@ -1709,10 +1703,8 @@ static void pl330_release_channel(struct pl330_thread *thrd)
+
+ pl330 = thrd->dmac;
+
+- spin_lock_irqsave(&pl330->lock, flags);
+ _free_event(thrd, thrd->ev);
+ thrd->free = true;
+- spin_unlock_irqrestore(&pl330->lock, flags);
+ }
+
+ /* Initialize the structure for PL330 configuration, that can be used
+@@ -2077,20 +2069,20 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan)
+ struct pl330_dmac *pl330 = pch->dmac;
+ unsigned long flags;
+
+- spin_lock_irqsave(&pch->lock, flags);
++ spin_lock_irqsave(&pl330->lock, flags);
+
+ dma_cookie_init(chan);
+ pch->cyclic = false;
+
+ pch->thread = pl330_request_channel(pl330);
+ if (!pch->thread) {
+- spin_unlock_irqrestore(&pch->lock, flags);
++ spin_unlock_irqrestore(&pl330->lock, flags);
+ return -ENOMEM;
+ }
+
+ tasklet_init(&pch->task, pl330_tasklet, (unsigned long) pch);
+
+- spin_unlock_irqrestore(&pch->lock, flags);
++ spin_unlock_irqrestore(&pl330->lock, flags);
+
+ return 1;
+ }
+@@ -2188,12 +2180,13 @@ static int pl330_pause(struct dma_chan *chan)
+ static void pl330_free_chan_resources(struct dma_chan *chan)
+ {
+ struct dma_pl330_chan *pch = to_pchan(chan);
++ struct pl330_dmac *pl330 = pch->dmac;
+ unsigned long flags;
+
+ tasklet_kill(&pch->task);
+
+ pm_runtime_get_sync(pch->dmac->ddma.dev);
+- spin_lock_irqsave(&pch->lock, flags);
++ spin_lock_irqsave(&pl330->lock, flags);
+
+ pl330_release_channel(pch->thread);
+ pch->thread = NULL;
+@@ -2201,7 +2194,7 @@ static void pl330_free_chan_resources(struct dma_chan *chan)
+ if (pch->cyclic)
+ list_splice_tail_init(&pch->work_list, &pch->dmac->desc_pool);
+
+- spin_unlock_irqrestore(&pch->lock, flags);
++ spin_unlock_irqrestore(&pl330->lock, flags);
+ pm_runtime_mark_last_busy(pch->dmac->ddma.dev);
+ pm_runtime_put_autosuspend(pch->dmac->ddma.dev);
+ }
+diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
+index 72e07e3cf718..16e0eb523439 100644
+--- a/drivers/edac/i5000_edac.c
++++ b/drivers/edac/i5000_edac.c
+@@ -227,7 +227,7 @@
+ #define NREC_RDWR(x) (((x)>>11) & 1)
+ #define NREC_RANK(x) (((x)>>8) & 0x7)
+ #define NRECMEMB 0xC0
+-#define NREC_CAS(x) (((x)>>16) & 0xFFFFFF)
++#define NREC_CAS(x) (((x)>>16) & 0xFFF)
+ #define NREC_RAS(x) ((x) & 0x7FFF)
+ #define NRECFGLOG 0xC4
+ #define NREEECFBDA 0xC8
+@@ -371,7 +371,7 @@ struct i5000_error_info {
+ /* These registers are input ONLY if there was a
+ * Non-Recoverable Error */
+ u16 nrecmema; /* Non-Recoverable Mem log A */
+- u16 nrecmemb; /* Non-Recoverable Mem log B */
++ u32 nrecmemb; /* Non-Recoverable Mem log B */
+
+ };
+
+@@ -407,7 +407,7 @@ static void i5000_get_error_info(struct mem_ctl_info *mci,
+ NERR_FAT_FBD, &info->nerr_fat_fbd);
+ pci_read_config_word(pvt->branchmap_werrors,
+ NRECMEMA, &info->nrecmema);
+- pci_read_config_word(pvt->branchmap_werrors,
++ pci_read_config_dword(pvt->branchmap_werrors,
+ NRECMEMB, &info->nrecmemb);
+
+ /* Clear the error bits, by writing them back */
+@@ -1293,7 +1293,7 @@ static int i5000_init_csrows(struct mem_ctl_info *mci)
+ dimm->mtype = MEM_FB_DDR2;
+
+ /* ask what device type on this row */
+- if (MTR_DRAM_WIDTH(mtr))
++ if (MTR_DRAM_WIDTH(mtr) == 8)
+ dimm->dtype = DEV_X8;
+ else
+ dimm->dtype = DEV_X4;
+diff --git a/drivers/edac/i5400_edac.c b/drivers/edac/i5400_edac.c
+index 6ef6ad1ba16e..2ea2f32e608b 100644
+--- a/drivers/edac/i5400_edac.c
++++ b/drivers/edac/i5400_edac.c
+@@ -368,7 +368,7 @@ struct i5400_error_info {
+
+ /* These registers are input ONLY if there was a Non-Rec Error */
+ u16 nrecmema; /* Non-Recoverable Mem log A */
+- u16 nrecmemb; /* Non-Recoverable Mem log B */
++ u32 nrecmemb; /* Non-Recoverable Mem log B */
+
+ };
+
+@@ -458,7 +458,7 @@ static void i5400_get_error_info(struct mem_ctl_info *mci,
+ NERR_FAT_FBD, &info->nerr_fat_fbd);
+ pci_read_config_word(pvt->branchmap_werrors,
+ NRECMEMA, &info->nrecmema);
+- pci_read_config_word(pvt->branchmap_werrors,
++ pci_read_config_dword(pvt->branchmap_werrors,
+ NRECMEMB, &info->nrecmemb);
+
+ /* Clear the error bits, by writing them back */
+@@ -1207,13 +1207,14 @@ static int i5400_init_dimms(struct mem_ctl_info *mci)
+
+ dimm->nr_pages = size_mb << 8;
+ dimm->grain = 8;
+- dimm->dtype = MTR_DRAM_WIDTH(mtr) ? DEV_X8 : DEV_X4;
++ dimm->dtype = MTR_DRAM_WIDTH(mtr) == 8 ?
++ DEV_X8 : DEV_X4;
+ dimm->mtype = MEM_FB_DDR2;
+ /*
+ * The eccc mechanism is SDDC (aka SECC), with
+ * is similar to Chipkill.
+ */
+- dimm->edac_mode = MTR_DRAM_WIDTH(mtr) ?
++ dimm->edac_mode = MTR_DRAM_WIDTH(mtr) == 8 ?
+ EDAC_S8ECD8ED : EDAC_S4ECD4ED;
+ ndimms++;
+ }
+diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
+index cb46c468b01e..25e51151b957 100644
+--- a/drivers/edac/sb_edac.c
++++ b/drivers/edac/sb_edac.c
+@@ -1700,6 +1700,7 @@ static int ibridge_mci_bind_devs(struct mem_ctl_info *mci,
+ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA:
+ pvt->pci_ta = pdev;
++ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS:
+ pvt->pci_ras = pdev;
+ break;
+diff --git a/drivers/gpio/gpio-74xx-mmio.c b/drivers/gpio/gpio-74xx-mmio.c
+index 0763655cca6c..6ed7c0fb3378 100644
+--- a/drivers/gpio/gpio-74xx-mmio.c
++++ b/drivers/gpio/gpio-74xx-mmio.c
+@@ -129,7 +129,7 @@ static int mmio_74xx_gpio_probe(struct platform_device *pdev)
+ if (IS_ERR(dat))
+ return PTR_ERR(dat);
+
+- priv->flags = (unsigned)of_id->data;
++ priv->flags = (uintptr_t) of_id->data;
+
+ err = bgpio_init(&priv->bgc, &pdev->dev,
+ DIV_ROUND_UP(MMIO_74XX_BIT_CNT(priv->flags), 8),
+diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
+index 9e7f93bcd3ea..15031b46c9c4 100644
+--- a/drivers/hv/hv_balloon.c
++++ b/drivers/hv/hv_balloon.c
+@@ -748,7 +748,7 @@ static int pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt)
+ * If the pfn range we are dealing with is not in the current
+ * "hot add block", move on.
+ */
+- if ((start_pfn >= has->end_pfn))
++ if (start_pfn < has->start_pfn || start_pfn >= has->end_pfn)
+ continue;
+
+ /*
+@@ -811,7 +811,7 @@ static unsigned long handle_pg_range(unsigned long pg_start,
+ * If the pfn range we are dealing with is not in the current
+ * "hot add block", move on.
+ */
+- if ((start_pfn >= has->end_pfn))
++ if (start_pfn < has->start_pfn || start_pfn >= has->end_pfn)
+ continue;
+
+ old_covered_state = has->covered_end_pfn;
+diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c
+index d8803c3bbfdc..16833365475f 100644
+--- a/drivers/i2c/busses/i2c-riic.c
++++ b/drivers/i2c/busses/i2c-riic.c
+@@ -218,8 +218,12 @@ static irqreturn_t riic_tend_isr(int irq, void *data)
+ }
+
+ if (riic->is_last || riic->err) {
+- riic_clear_set_bit(riic, 0, ICIER_SPIE, RIIC_ICIER);
++ riic_clear_set_bit(riic, ICIER_TEIE, ICIER_SPIE, RIIC_ICIER);
+ writeb(ICCR2_SP, riic->base + RIIC_ICCR2);
++ } else {
++ /* Transfer is complete, but do not send STOP */
++ riic_clear_set_bit(riic, ICIER_TEIE, 0, RIIC_ICIER);
++ complete(&riic->msg_done);
+ }
+
+ return IRQ_HANDLED;
+diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
+index a0e7161f040c..58e1a54fc119 100644
+--- a/drivers/iio/adc/ti_am335x_adc.c
++++ b/drivers/iio/adc/ti_am335x_adc.c
+@@ -121,7 +121,9 @@ static irqreturn_t tiadc_irq_h(int irq, void *private)
+ {
+ struct iio_dev *indio_dev = private;
+ struct tiadc_device *adc_dev = iio_priv(indio_dev);
+- unsigned int status, config;
++ unsigned int status, config, adc_fsm;
++ unsigned short count = 0;
++
+ status = tiadc_readl(adc_dev, REG_IRQSTATUS);
+
+ /*
+@@ -135,6 +137,15 @@ static irqreturn_t tiadc_irq_h(int irq, void *private)
+ tiadc_writel(adc_dev, REG_CTRL, config);
+ tiadc_writel(adc_dev, REG_IRQSTATUS, IRQENB_FIFO1OVRRUN
+ | IRQENB_FIFO1UNDRFLW | IRQENB_FIFO1THRES);
++
++ /* wait for idle state.
++ * ADC needs to finish the current conversion
++ * before disabling the module
++ */
++ do {
++ adc_fsm = tiadc_readl(adc_dev, REG_ADCFSM);
++ } while (adc_fsm != 0x10 && count++ < 100);
++
+ tiadc_writel(adc_dev, REG_CTRL, (config | CNTRLREG_TSCSSENB));
+ return IRQ_HANDLED;
+ } else if (status & IRQENB_FIFO1THRES) {
+diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+index 3460dd0e3e99..a8db38db622e 100644
+--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
++++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+@@ -49,8 +49,6 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+ st->report_state.report_id,
+ st->report_state.index,
+ HID_USAGE_SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM);
+-
+- poll_value = hid_sensor_read_poll_value(st);
+ } else {
+ int val;
+
+@@ -90,7 +88,9 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+ sensor_hub_get_feature(st->hsdev, st->power_state.report_id,
+ st->power_state.index,
+ sizeof(state_val), &state_val);
+- if (state && poll_value)
++ if (state)
++ poll_value = hid_sensor_read_poll_value(st);
++ if (poll_value > 0)
+ msleep_interruptible(poll_value * 2);
+
+ return 0;
+diff --git a/drivers/iio/pressure/mpl115.c b/drivers/iio/pressure/mpl115.c
+index a0d7deeac62f..3f90985d545e 100644
+--- a/drivers/iio/pressure/mpl115.c
++++ b/drivers/iio/pressure/mpl115.c
+@@ -136,6 +136,7 @@ static const struct iio_chan_spec mpl115_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
++ .info_mask_shared_by_type =
+ BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE),
+ },
+ };
+diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
+index 01b2e0b18878..0f5b8767ec2e 100644
+--- a/drivers/iio/pressure/mpl3115.c
++++ b/drivers/iio/pressure/mpl3115.c
+@@ -182,7 +182,7 @@ static const struct iio_chan_spec mpl3115_channels[] = {
+ {
+ .type = IIO_PRESSURE,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+- BIT(IIO_CHAN_INFO_SCALE),
++ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 'u',
+@@ -195,7 +195,7 @@ static const struct iio_chan_spec mpl3115_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+- BIT(IIO_CHAN_INFO_SCALE),
++ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 's',
+diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
+index 02fc91c68027..ca24eebb5a35 100644
+--- a/drivers/infiniband/hw/mlx4/qp.c
++++ b/drivers/infiniband/hw/mlx4/qp.c
+@@ -1496,7 +1496,7 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
+ context->mtu_msgmax = (IB_MTU_4096 << 5) |
+ ilog2(dev->dev->caps.max_gso_sz);
+ else
+- context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
++ context->mtu_msgmax = (IB_MTU_4096 << 5) | 13;
+ } else if (attr_mask & IB_QP_PATH_MTU) {
+ if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) {
+ pr_err("path MTU (%u) is invalid\n",
+diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
+index 57c9809e8b87..031801671b80 100644
+--- a/drivers/infiniband/hw/mlx5/main.c
++++ b/drivers/infiniband/hw/mlx5/main.c
+@@ -1020,6 +1020,8 @@ static int create_umr_res(struct mlx5_ib_dev *dev)
+ qp->real_qp = qp;
+ qp->uobject = NULL;
+ qp->qp_type = MLX5_IB_QPT_REG_UMR;
++ qp->send_cq = init_attr->send_cq;
++ qp->recv_cq = init_attr->recv_cq;
+
+ attr->qp_state = IB_QPS_INIT;
+ attr->port_num = 1;
+diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+index 63b92cbb29ad..545c7ef480e8 100644
+--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
++++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+@@ -1052,10 +1052,15 @@ static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv,
+ ipoib_ib_dev_down(dev);
+
+ if (level == IPOIB_FLUSH_HEAVY) {
++ rtnl_lock();
+ if (test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags))
+ ipoib_ib_dev_stop(dev);
+- if (ipoib_ib_dev_open(dev) != 0)
++
++ result = ipoib_ib_dev_open(dev);
++ rtnl_unlock();
++ if (result)
+ return;
++
+ if (netif_queue_stopped(dev))
+ netif_start_queue(dev);
+ }
+diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
+index 18fd4cd6d3c7..74d69fdbdec9 100644
+--- a/drivers/input/serio/i8042-x86ia64io.h
++++ b/drivers/input/serio/i8042-x86ia64io.h
+@@ -514,6 +514,13 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "IC4I"),
+ },
+ },
++ {
++ /* TUXEDO BU1406 */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
++ DMI_MATCH(DMI_PRODUCT_NAME, "N24_25BU"),
++ },
++ },
+ { }
+ };
+
+diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
+index 275f59071f56..9d05a711a2f4 100644
+--- a/drivers/iommu/intel-iommu.c
++++ b/drivers/iommu/intel-iommu.c
+@@ -2018,10 +2018,12 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn,
+ uint64_t tmp;
+
+ if (!sg_res) {
++ unsigned int pgoff = sg->offset & ~PAGE_MASK;
++
+ sg_res = aligned_nrpages(sg->offset, sg->length);
+- sg->dma_address = ((dma_addr_t)iov_pfn << VTD_PAGE_SHIFT) + sg->offset;
++ sg->dma_address = ((dma_addr_t)iov_pfn << VTD_PAGE_SHIFT) + pgoff;
+ sg->dma_length = sg->length;
+- pteval = page_to_phys(sg_page(sg)) | prot;
++ pteval = (sg_phys(sg) - pgoff) | prot;
+ phys_pfn = pteval >> VTD_PAGE_SHIFT;
+ }
+
+@@ -3324,7 +3326,7 @@ static int intel_nontranslate_map_sg(struct device *hddev,
+
+ for_each_sg(sglist, sg, nelems, i) {
+ BUG_ON(!sg_page(sg));
+- sg->dma_address = page_to_phys(sg_page(sg)) + sg->offset;
++ sg->dma_address = sg_phys(sg);
+ sg->dma_length = sg->length;
+ }
+ return nelems;
+diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
+index 2f7dffaae93a..5ba30449ee53 100644
+--- a/drivers/irqchip/irq-crossbar.c
++++ b/drivers/irqchip/irq-crossbar.c
+@@ -194,7 +194,7 @@ static const struct irq_domain_ops crossbar_domain_ops = {
+ static int __init crossbar_of_init(struct device_node *node)
+ {
+ int i, size, reserved = 0;
+- u32 max = 0, entry;
++ u32 max = 0, entry, reg_size;
+ const __be32 *irqsr;
+ int ret = -ENOMEM;
+
+@@ -271,9 +271,9 @@ static int __init crossbar_of_init(struct device_node *node)
+ if (!cb->register_offsets)
+ goto err_irq_map;
+
+- of_property_read_u32(node, "ti,reg-size", &size);
++ of_property_read_u32(node, "ti,reg-size", ®_size);
+
+- switch (size) {
++ switch (reg_size) {
+ case 1:
+ cb->write = crossbar_writeb;
+ break;
+@@ -299,7 +299,7 @@ static int __init crossbar_of_init(struct device_node *node)
+ continue;
+
+ cb->register_offsets[i] = reserved;
+- reserved += size;
++ reserved += reg_size;
+ }
+
+ of_property_read_u32(node, "ti,irqs-safe-map", &cb->safe_map);
+diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
+index dfdd1908641c..f8a1d20c73f4 100644
+--- a/drivers/md/bcache/bcache.h
++++ b/drivers/md/bcache/bcache.h
+@@ -441,7 +441,7 @@ struct cache {
+ * until a gc finishes - otherwise we could pointlessly burn a ton of
+ * cpu
+ */
+- unsigned invalidate_needs_gc:1;
++ unsigned invalidate_needs_gc;
+
+ bool discard; /* Get rid of? */
+
+@@ -611,8 +611,8 @@ struct cache_set {
+
+ /* Counts how many sectors bio_insert has added to the cache */
+ atomic_t sectors_to_gc;
++ wait_queue_head_t gc_wait;
+
+- wait_queue_head_t moving_gc_wait;
+ struct keybuf moving_gc_keys;
+ /* Number of moving GC bios in flight */
+ struct semaphore moving_in_flight;
+diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
+index 43829d9493f7..f0b75d54951a 100644
+--- a/drivers/md/bcache/btree.c
++++ b/drivers/md/bcache/btree.c
+@@ -1762,33 +1762,34 @@ static void bch_btree_gc(struct cache_set *c)
+ bch_moving_gc(c);
+ }
+
+-static int bch_gc_thread(void *arg)
++static bool gc_should_run(struct cache_set *c)
+ {
+- struct cache_set *c = arg;
+ struct cache *ca;
+ unsigned i;
+
+- while (1) {
+-again:
+- bch_btree_gc(c);
++ for_each_cache(ca, c, i)
++ if (ca->invalidate_needs_gc)
++ return true;
+
+- set_current_state(TASK_INTERRUPTIBLE);
+- if (kthread_should_stop())
+- break;
++ if (atomic_read(&c->sectors_to_gc) < 0)
++ return true;
+
+- mutex_lock(&c->bucket_lock);
++ return false;
++}
+
+- for_each_cache(ca, c, i)
+- if (ca->invalidate_needs_gc) {
+- mutex_unlock(&c->bucket_lock);
+- set_current_state(TASK_RUNNING);
+- goto again;
+- }
++static int bch_gc_thread(void *arg)
++{
++ struct cache_set *c = arg;
+
+- mutex_unlock(&c->bucket_lock);
++ while (1) {
++ wait_event_interruptible(c->gc_wait,
++ kthread_should_stop() || gc_should_run(c));
+
+- try_to_freeze();
+- schedule();
++ if (kthread_should_stop())
++ break;
++
++ set_gc_sectors(c);
++ bch_btree_gc(c);
+ }
+
+ return 0;
+@@ -1796,11 +1797,10 @@ again:
+
+ int bch_gc_thread_start(struct cache_set *c)
+ {
+- c->gc_thread = kthread_create(bch_gc_thread, c, "bcache_gc");
++ c->gc_thread = kthread_run(bch_gc_thread, c, "bcache_gc");
+ if (IS_ERR(c->gc_thread))
+ return PTR_ERR(c->gc_thread);
+
+- set_task_state(c->gc_thread, TASK_INTERRUPTIBLE);
+ return 0;
+ }
+
+diff --git a/drivers/md/bcache/btree.h b/drivers/md/bcache/btree.h
+index 5c391fa01bed..9b80417cd547 100644
+--- a/drivers/md/bcache/btree.h
++++ b/drivers/md/bcache/btree.h
+@@ -260,8 +260,7 @@ void bch_initial_mark_key(struct cache_set *, int, struct bkey *);
+
+ static inline void wake_up_gc(struct cache_set *c)
+ {
+- if (c->gc_thread)
+- wake_up_process(c->gc_thread);
++ wake_up(&c->gc_wait);
+ }
+
+ #define MAP_DONE 0
+diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
+index ab43faddb447..eb496309af96 100644
+--- a/drivers/md/bcache/request.c
++++ b/drivers/md/bcache/request.c
+@@ -193,14 +193,12 @@ static void bch_data_insert_start(struct closure *cl)
+ struct data_insert_op *op = container_of(cl, struct data_insert_op, cl);
+ struct bio *bio = op->bio, *n;
+
+- if (atomic_sub_return(bio_sectors(bio), &op->c->sectors_to_gc) < 0) {
+- set_gc_sectors(op->c);
+- wake_up_gc(op->c);
+- }
+-
+ if (op->bypass)
+ return bch_data_invalidate(cl);
+
++ if (atomic_sub_return(bio_sectors(bio), &op->c->sectors_to_gc) < 0)
++ wake_up_gc(op->c);
++
+ /*
+ * Journal writes are marked REQ_FLUSH; if the original write was a
+ * flush, it'll wait on the journal write.
+@@ -464,6 +462,7 @@ struct search {
+ unsigned recoverable:1;
+ unsigned write:1;
+ unsigned read_dirty_data:1;
++ unsigned cache_missed:1;
+
+ unsigned long start_time;
+
+@@ -646,6 +645,7 @@ static inline struct search *search_alloc(struct bio *bio,
+
+ s->orig_bio = bio;
+ s->cache_miss = NULL;
++ s->cache_missed = 0;
+ s->d = d;
+ s->recoverable = 1;
+ s->write = (bio->bi_rw & REQ_WRITE) != 0;
+@@ -701,7 +701,14 @@ static void cached_dev_read_error(struct closure *cl)
+ struct search *s = container_of(cl, struct search, cl);
+ struct bio *bio = &s->bio.bio;
+
+- if (s->recoverable) {
++ /*
++ * If read request hit dirty data (s->read_dirty_data is true),
++ * then recovery a failed read request from cached device may
++ * get a stale data back. So read failure recovery is only
++ * permitted when read request hit clean data in cache device,
++ * or when cache read race happened.
++ */
++ if (s->recoverable && !s->read_dirty_data) {
+ /* Retry from the backing device: */
+ trace_bcache_read_retry(s->orig_bio);
+
+@@ -762,7 +769,7 @@ static void cached_dev_read_done_bh(struct closure *cl)
+ struct cached_dev *dc = container_of(s->d, struct cached_dev, disk);
+
+ bch_mark_cache_accounting(s->iop.c, s->d,
+- !s->cache_miss, s->iop.bypass);
++ !s->cache_missed, s->iop.bypass);
+ trace_bcache_read(s->orig_bio, !s->cache_miss, s->iop.bypass);
+
+ if (s->iop.error)
+@@ -781,6 +788,8 @@ static int cached_dev_cache_miss(struct btree *b, struct search *s,
+ struct cached_dev *dc = container_of(s->d, struct cached_dev, disk);
+ struct bio *miss, *cache_bio;
+
++ s->cache_missed = 1;
++
+ if (s->cache_miss || s->iop.bypass) {
+ miss = bio_next_split(bio, sectors, GFP_NOIO, s->d->bio_split);
+ ret = miss == bio ? MAP_DONE : MAP_CONTINUE;
+diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
+index 8e5666ac8a6a..6f7bc8a8674b 100644
+--- a/drivers/md/bcache/super.c
++++ b/drivers/md/bcache/super.c
+@@ -1523,6 +1523,7 @@ struct cache_set *bch_cache_set_alloc(struct cache_sb *sb)
+ mutex_init(&c->bucket_lock);
+ init_waitqueue_head(&c->btree_cache_wait);
+ init_waitqueue_head(&c->bucket_wait);
++ init_waitqueue_head(&c->gc_wait);
+ sema_init(&c->uuid_write_mutex, 1);
+
+ spin_lock_init(&c->btree_gc_time.lock);
+@@ -1581,6 +1582,7 @@ static void run_cache_set(struct cache_set *c)
+
+ for_each_cache(ca, c, i)
+ c->nbuckets += ca->sb.nbuckets;
++ set_gc_sectors(c);
+
+ if (CACHE_SYNC(&c->sb)) {
+ LIST_HEAD(journal);
+@@ -2120,6 +2122,7 @@ static void bcache_exit(void)
+ if (bcache_major)
+ unregister_blkdev(bcache_major, "bcache");
+ unregister_reboot_notifier(&reboot);
++ mutex_destroy(&bch_register_lock);
+ }
+
+ static int __init bcache_init(void)
+@@ -2138,14 +2141,15 @@ static int __init bcache_init(void)
+ bcache_major = register_blkdev(0, "bcache");
+ if (bcache_major < 0) {
+ unregister_reboot_notifier(&reboot);
++ mutex_destroy(&bch_register_lock);
+ return bcache_major;
+ }
+
+ if (!(bcache_wq = create_workqueue("bcache")) ||
+ !(bcache_kobj = kobject_create_and_add("bcache", fs_kobj)) ||
+- sysfs_create_files(bcache_kobj, files) ||
+ bch_request_init() ||
+- bch_debug_init(bcache_kobj))
++ bch_debug_init(bcache_kobj) ||
++ sysfs_create_files(bcache_kobj, files))
+ goto err;
+
+ return 0;
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index d192ab2ed17c..c2a13fd9e0ca 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -1435,11 +1435,62 @@ void dm_accept_partial_bio(struct bio *bio, unsigned n_sectors)
+ }
+ EXPORT_SYMBOL_GPL(dm_accept_partial_bio);
+
++/*
++ * Flush current->bio_list when the target map method blocks.
++ * This fixes deadlocks in snapshot and possibly in other targets.
++ */
++struct dm_offload {
++ struct blk_plug plug;
++ struct blk_plug_cb cb;
++};
++
++static void flush_current_bio_list(struct blk_plug_cb *cb, bool from_schedule)
++{
++ struct dm_offload *o = container_of(cb, struct dm_offload, cb);
++ struct bio_list list;
++ struct bio *bio;
++
++ INIT_LIST_HEAD(&o->cb.list);
++
++ if (unlikely(!current->bio_list))
++ return;
++
++ list = *current->bio_list;
++ bio_list_init(current->bio_list);
++
++ while ((bio = bio_list_pop(&list))) {
++ struct bio_set *bs = bio->bi_pool;
++ if (unlikely(!bs) || bs == fs_bio_set) {
++ bio_list_add(current->bio_list, bio);
++ continue;
++ }
++
++ spin_lock(&bs->rescue_lock);
++ bio_list_add(&bs->rescue_list, bio);
++ queue_work(bs->rescue_workqueue, &bs->rescue_work);
++ spin_unlock(&bs->rescue_lock);
++ }
++}
++
++static void dm_offload_start(struct dm_offload *o)
++{
++ blk_start_plug(&o->plug);
++ o->cb.callback = flush_current_bio_list;
++ list_add(&o->cb.list, ¤t->plug->cb_list);
++}
++
++static void dm_offload_end(struct dm_offload *o)
++{
++ list_del(&o->cb.list);
++ blk_finish_plug(&o->plug);
++}
++
+ static void __map_bio(struct dm_target_io *tio)
+ {
+ int r;
+ sector_t sector;
+ struct mapped_device *md;
++ struct dm_offload o;
+ struct bio *clone = &tio->clone;
+ struct dm_target *ti = tio->ti;
+
+@@ -1452,7 +1503,11 @@ static void __map_bio(struct dm_target_io *tio)
+ */
+ atomic_inc(&tio->io->io_count);
+ sector = clone->bi_iter.bi_sector;
++
++ dm_offload_start(&o);
+ r = ti->type->map(ti, clone);
++ dm_offload_end(&o);
++
+ if (r == DM_MAPIO_REMAPPED) {
+ /* the bio has been remapped so dispatch it */
+
+diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
+index fcfc4b9b2672..4eb5cb18f98d 100644
+--- a/drivers/md/md-cluster.c
++++ b/drivers/md/md-cluster.c
+@@ -738,6 +738,7 @@ static int leave(struct mddev *mddev)
+ lockres_free(cinfo->sb_lock);
+ lockres_free(cinfo->bitmap_lockres);
+ dlm_release_lockspace(cinfo->lockspace, 2);
++ kfree(cinfo);
+ return 0;
+ }
+
+diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
+index 0ba6c358c6e0..4cbc3df79a2a 100644
+--- a/drivers/md/raid10.c
++++ b/drivers/md/raid10.c
+@@ -1161,6 +1161,8 @@ static void __make_request(struct mddev *mddev, struct bio *bio)
+ int max_sectors;
+ int sectors;
+
++ md_write_start(mddev, bio);
++
+ /*
+ * Register the new request and wait if the reconstruction
+ * thread has put up a bar for new requests.
+@@ -1559,8 +1561,6 @@ static void make_request(struct mddev *mddev, struct bio *bio)
+ return;
+ }
+
+- md_write_start(mddev, bio);
+-
+ do {
+
+ /*
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index 02e6d335f178..907aa9c6e894 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -1679,8 +1679,11 @@ static void ops_complete_reconstruct(void *stripe_head_ref)
+ struct r5dev *dev = &sh->dev[i];
+
+ if (dev->written || i == pd_idx || i == qd_idx) {
+- if (!discard && !test_bit(R5_SkipCopy, &dev->flags))
++ if (!discard && !test_bit(R5_SkipCopy, &dev->flags)) {
+ set_bit(R5_UPTODATE, &dev->flags);
++ if (test_bit(STRIPE_EXPAND_READY, &sh->state))
++ set_bit(R5_Expanded, &dev->flags);
++ }
+ if (fua)
+ set_bit(R5_WantFUA, &dev->flags);
+ if (sync)
+diff --git a/drivers/media/usb/dvb-usb/dibusb-common.c b/drivers/media/usb/dvb-usb/dibusb-common.c
+index ef3a8f75f82e..7b15aea2723d 100644
+--- a/drivers/media/usb/dvb-usb/dibusb-common.c
++++ b/drivers/media/usb/dvb-usb/dibusb-common.c
+@@ -179,8 +179,20 @@ EXPORT_SYMBOL(dibusb_i2c_algo);
+
+ int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)
+ {
+- u8 wbuf[1] = { offs };
+- return dibusb_i2c_msg(d, 0x50, wbuf, 1, val, 1);
++ u8 *buf;
++ int rc;
++
++ buf = kmalloc(2, GFP_KERNEL);
++ if (!buf)
++ return -ENOMEM;
++
++ buf[0] = offs;
++
++ rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);
++ *val = buf[1];
++ kfree(buf);
++
++ return rc;
+ }
+ EXPORT_SYMBOL(dibusb_read_eeprom_byte);
+
+diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
+index 5970dd6a1c1c..a41a4f6a51b2 100644
+--- a/drivers/media/usb/uvc/uvc_driver.c
++++ b/drivers/media/usb/uvc/uvc_driver.c
+@@ -1574,6 +1574,114 @@ static const char *uvc_print_chain(struct uvc_video_chain *chain)
+ return buffer;
+ }
+
++static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
++{
++ struct uvc_video_chain *chain;
++
++ chain = kzalloc(sizeof(*chain), GFP_KERNEL);
++ if (chain == NULL)
++ return NULL;
++
++ INIT_LIST_HEAD(&chain->entities);
++ mutex_init(&chain->ctrl_mutex);
++ chain->dev = dev;
++ v4l2_prio_init(&chain->prio);
++
++ return chain;
++}
++
++/*
++ * Fallback heuristic for devices that don't connect units and terminals in a
++ * valid chain.
++ *
++ * Some devices have invalid baSourceID references, causing uvc_scan_chain()
++ * to fail, but if we just take the entities we can find and put them together
++ * in the most sensible chain we can think of, turns out they do work anyway.
++ * Note: This heuristic assumes there is a single chain.
++ *
++ * At the time of writing, devices known to have such a broken chain are
++ * - Acer Integrated Camera (5986:055a)
++ * - Realtek rtl157a7 (0bda:57a7)
++ */
++static int uvc_scan_fallback(struct uvc_device *dev)
++{
++ struct uvc_video_chain *chain;
++ struct uvc_entity *iterm = NULL;
++ struct uvc_entity *oterm = NULL;
++ struct uvc_entity *entity;
++ struct uvc_entity *prev;
++
++ /*
++ * Start by locating the input and output terminals. We only support
++ * devices with exactly one of each for now.
++ */
++ list_for_each_entry(entity, &dev->entities, list) {
++ if (UVC_ENTITY_IS_ITERM(entity)) {
++ if (iterm)
++ return -EINVAL;
++ iterm = entity;
++ }
++
++ if (UVC_ENTITY_IS_OTERM(entity)) {
++ if (oterm)
++ return -EINVAL;
++ oterm = entity;
++ }
++ }
++
++ if (iterm == NULL || oterm == NULL)
++ return -EINVAL;
++
++ /* Allocate the chain and fill it. */
++ chain = uvc_alloc_chain(dev);
++ if (chain == NULL)
++ return -ENOMEM;
++
++ if (uvc_scan_chain_entity(chain, oterm) < 0)
++ goto error;
++
++ prev = oterm;
++
++ /*
++ * Add all Processing and Extension Units with two pads. The order
++ * doesn't matter much, use reverse list traversal to connect units in
++ * UVC descriptor order as we build the chain from output to input. This
++ * leads to units appearing in the order meant by the manufacturer for
++ * the cameras known to require this heuristic.
++ */
++ list_for_each_entry_reverse(entity, &dev->entities, list) {
++ if (entity->type != UVC_VC_PROCESSING_UNIT &&
++ entity->type != UVC_VC_EXTENSION_UNIT)
++ continue;
++
++ if (entity->num_pads != 2)
++ continue;
++
++ if (uvc_scan_chain_entity(chain, entity) < 0)
++ goto error;
++
++ prev->baSourceID[0] = entity->id;
++ prev = entity;
++ }
++
++ if (uvc_scan_chain_entity(chain, iterm) < 0)
++ goto error;
++
++ prev->baSourceID[0] = iterm->id;
++
++ list_add_tail(&chain->list, &dev->chains);
++
++ uvc_trace(UVC_TRACE_PROBE,
++ "Found a video chain by fallback heuristic (%s).\n",
++ uvc_print_chain(chain));
++
++ return 0;
++
++error:
++ kfree(chain);
++ return -EINVAL;
++}
++
+ /*
+ * Scan the device for video chains and register video devices.
+ *
+@@ -1596,15 +1704,10 @@ static int uvc_scan_device(struct uvc_device *dev)
+ if (term->chain.next || term->chain.prev)
+ continue;
+
+- chain = kzalloc(sizeof(*chain), GFP_KERNEL);
++ chain = uvc_alloc_chain(dev);
+ if (chain == NULL)
+ return -ENOMEM;
+
+- INIT_LIST_HEAD(&chain->entities);
+- mutex_init(&chain->ctrl_mutex);
+- chain->dev = dev;
+- v4l2_prio_init(&chain->prio);
+-
+ term->flags |= UVC_ENTITY_FLAG_DEFAULT;
+
+ if (uvc_scan_chain(chain, term) < 0) {
+@@ -1618,6 +1721,9 @@ static int uvc_scan_device(struct uvc_device *dev)
+ list_add_tail(&chain->list, &dev->chains);
+ }
+
++ if (list_empty(&dev->chains))
++ uvc_scan_fallback(dev);
++
+ if (list_empty(&dev->chains)) {
+ uvc_printk(KERN_INFO, "No valid video chain found.\n");
+ return -1;
+diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
+index 87a19f33e460..6d072cae6134 100644
+--- a/drivers/media/usb/uvc/uvc_queue.c
++++ b/drivers/media/usb/uvc/uvc_queue.c
+@@ -399,7 +399,7 @@ struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
+ nextbuf = NULL;
+ spin_unlock_irqrestore(&queue->irqlock, flags);
+
+- buf->state = buf->error ? VB2_BUF_STATE_ERROR : UVC_BUF_STATE_DONE;
++ buf->state = buf->error ? UVC_BUF_STATE_ERROR : UVC_BUF_STATE_DONE;
+ vb2_set_plane_payload(&buf->buf, 0, buf->bytesused);
+ vb2_buffer_done(&buf->buf, VB2_BUF_STATE_DONE);
+
+diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
+index 2c51acce4b34..fedb19d1516b 100644
+--- a/drivers/memory/omap-gpmc.c
++++ b/drivers/memory/omap-gpmc.c
+@@ -1892,9 +1892,7 @@ static int gpmc_probe_onenand_child(struct platform_device *pdev,
+ if (!of_property_read_u32(child, "dma-channel", &val))
+ gpmc_onenand_data->dma_channel = val;
+
+- gpmc_onenand_init(gpmc_onenand_data);
+-
+- return 0;
++ return gpmc_onenand_init(gpmc_onenand_data);
+ }
+ #else
+ static int gpmc_probe_onenand_child(struct platform_device *pdev,
+diff --git a/drivers/mtd/maps/pmcmsp-flash.c b/drivers/mtd/maps/pmcmsp-flash.c
+index 744ca5cacc9b..cf54420f943d 100644
+--- a/drivers/mtd/maps/pmcmsp-flash.c
++++ b/drivers/mtd/maps/pmcmsp-flash.c
+@@ -139,15 +139,13 @@ static int __init init_msp_flash(void)
+ }
+
+ msp_maps[i].bankwidth = 1;
+- msp_maps[i].name = kmalloc(7, GFP_KERNEL);
++ msp_maps[i].name = kstrndup(flash_name, 7, GFP_KERNEL);
+ if (!msp_maps[i].name) {
+ iounmap(msp_maps[i].virt);
+ kfree(msp_parts[i]);
+ goto cleanup_loop;
+ }
+
+- msp_maps[i].name = strncpy(msp_maps[i].name, flash_name, 7);
+-
+ for (j = 0; j < pcnt; j++) {
+ part_name[5] = '0' + i;
+ part_name[7] = '0' + j;
+diff --git a/drivers/net/appletalk/ipddp.c b/drivers/net/appletalk/ipddp.c
+index e90c6a7333d7..2e4649655181 100644
+--- a/drivers/net/appletalk/ipddp.c
++++ b/drivers/net/appletalk/ipddp.c
+@@ -191,7 +191,7 @@ static netdev_tx_t ipddp_xmit(struct sk_buff *skb, struct net_device *dev)
+ */
+ static int ipddp_create(struct ipddp_route *new_rt)
+ {
+- struct ipddp_route *rt = kmalloc(sizeof(*rt), GFP_KERNEL);
++ struct ipddp_route *rt = kzalloc(sizeof(*rt), GFP_KERNEL);
+
+ if (rt == NULL)
+ return -ENOMEM;
+diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
+index 7bb3cf38f346..2965453853f3 100644
+--- a/drivers/net/can/ti_hecc.c
++++ b/drivers/net/can/ti_hecc.c
+@@ -652,6 +652,9 @@ static int ti_hecc_rx_poll(struct napi_struct *napi, int quota)
+ mbx_mask = hecc_read(priv, HECC_CANMIM);
+ mbx_mask |= HECC_TX_MBOX_MASK;
+ hecc_write(priv, HECC_CANMIM, mbx_mask);
++ } else {
++ /* repoll is done only if whole budget is used */
++ num_pkts = quota;
+ }
+
+ return num_pkts;
+diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
+index 339b0c5ce60c..a5b92d8ff345 100644
+--- a/drivers/net/can/usb/ems_usb.c
++++ b/drivers/net/can/usb/ems_usb.c
+@@ -290,6 +290,8 @@ static void ems_usb_read_interrupt_callback(struct urb *urb)
+
+ case -ECONNRESET: /* unlink */
+ case -ENOENT:
++ case -EPIPE:
++ case -EPROTO:
+ case -ESHUTDOWN:
+ return;
+
+diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c
+index 730a2bac124d..f413c0b7be23 100644
+--- a/drivers/net/can/usb/esd_usb2.c
++++ b/drivers/net/can/usb/esd_usb2.c
+@@ -396,6 +396,8 @@ static void esd_usb2_read_bulk_callback(struct urb *urb)
+ break;
+
+ case -ENOENT:
++ case -EPIPE:
++ case -EPROTO:
+ case -ESHUTDOWN:
+ return;
+
+diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c
+index dc77225227c7..699fdaf19895 100644
+--- a/drivers/net/can/usb/kvaser_usb.c
++++ b/drivers/net/can/usb/kvaser_usb.c
+@@ -603,8 +603,8 @@ static int kvaser_usb_wait_msg(const struct kvaser_usb *dev, u8 id,
+ }
+
+ if (pos + tmp->len > actual_len) {
+- dev_err(dev->udev->dev.parent,
+- "Format error\n");
++ dev_err_ratelimited(dev->udev->dev.parent,
++ "Format error\n");
+ break;
+ }
+
+@@ -809,6 +809,7 @@ static int kvaser_usb_simple_msg_async(struct kvaser_usb_net_priv *priv,
+ if (err) {
+ netdev_err(netdev, "Error transmitting URB\n");
+ usb_unanchor_urb(urb);
++ kfree(buf);
+ usb_free_urb(urb);
+ return err;
+ }
+@@ -1322,6 +1323,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb)
+ case 0:
+ break;
+ case -ENOENT:
++ case -EPIPE:
++ case -EPROTO:
+ case -ESHUTDOWN:
+ return;
+ default:
+@@ -1330,7 +1333,7 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb)
+ goto resubmit_urb;
+ }
+
+- while (pos <= urb->actual_length - MSG_HEADER_LEN) {
++ while (pos <= (int)(urb->actual_length - MSG_HEADER_LEN)) {
+ msg = urb->transfer_buffer + pos;
+
+ /* The Kvaser firmware can only read and write messages that
+@@ -1349,7 +1352,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb)
+ }
+
+ if (pos + msg->len > urb->actual_length) {
+- dev_err(dev->udev->dev.parent, "Format error\n");
++ dev_err_ratelimited(dev->udev->dev.parent,
++ "Format error\n");
+ break;
+ }
+
+@@ -1768,6 +1772,7 @@ static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
+ spin_unlock_irqrestore(&priv->tx_contexts_lock, flags);
+
+ usb_unanchor_urb(urb);
++ kfree(buf);
+
+ stats->tx_dropped++;
+
+diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
+index d60a9fcc9896..4f4a5be07634 100644
+--- a/drivers/net/can/usb/usb_8dev.c
++++ b/drivers/net/can/usb/usb_8dev.c
+@@ -528,6 +528,8 @@ static void usb_8dev_read_bulk_callback(struct urb *urb)
+ break;
+
+ case -ENOENT:
++ case -EPIPE:
++ case -EPROTO:
+ case -ESHUTDOWN:
+ return;
+
+diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
+index 783543ad1fcf..621a970bddf6 100644
+--- a/drivers/net/ethernet/broadcom/bcmsysport.c
++++ b/drivers/net/ethernet/broadcom/bcmsysport.c
+@@ -955,15 +955,6 @@ static netdev_tx_t bcm_sysport_xmit(struct sk_buff *skb,
+ goto out;
+ }
+
+- /* Insert TSB and checksum infos */
+- if (priv->tsb_en) {
+- skb = bcm_sysport_insert_tsb(skb, dev);
+- if (!skb) {
+- ret = NETDEV_TX_OK;
+- goto out;
+- }
+- }
+-
+ /* The Ethernet switch we are interfaced with needs packets to be at
+ * least 64 bytes (including FCS) otherwise they will be discarded when
+ * they enter the switch port logic. When Broadcom tags are enabled, we
+@@ -971,13 +962,21 @@ static netdev_tx_t bcm_sysport_xmit(struct sk_buff *skb,
+ * (including FCS and tag) because the length verification is done after
+ * the Broadcom tag is stripped off the ingress packet.
+ */
+- if (skb_padto(skb, ETH_ZLEN + ENET_BRCM_TAG_LEN)) {
++ if (skb_put_padto(skb, ETH_ZLEN + ENET_BRCM_TAG_LEN)) {
+ ret = NETDEV_TX_OK;
+ goto out;
+ }
+
+- skb_len = skb->len < ETH_ZLEN + ENET_BRCM_TAG_LEN ?
+- ETH_ZLEN + ENET_BRCM_TAG_LEN : skb->len;
++ /* Insert TSB and checksum infos */
++ if (priv->tsb_en) {
++ skb = bcm_sysport_insert_tsb(skb, dev);
++ if (!skb) {
++ ret = NETDEV_TX_OK;
++ goto out;
++ }
++ }
++
++ skb_len = skb->len;
+
+ mapping = dma_map_single(kdev, skb->data, skb_len, DMA_TO_DEVICE);
+ if (dma_mapping_error(kdev, mapping)) {
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+index 8a97d28f3d65..a1d149515531 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+@@ -13227,7 +13227,7 @@ static int bnx2x_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
+ if (!netif_running(bp->dev)) {
+ DP(BNX2X_MSG_PTP,
+ "PTP adjfreq called while the interface is down\n");
+- return -EFAULT;
++ return -ENETDOWN;
+ }
+
+ if (ppb < 0) {
+@@ -13286,6 +13286,12 @@ static int bnx2x_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
+ {
+ struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info);
+
++ if (!netif_running(bp->dev)) {
++ DP(BNX2X_MSG_PTP,
++ "PTP adjtime called while the interface is down\n");
++ return -ENETDOWN;
++ }
++
+ DP(BNX2X_MSG_PTP, "PTP adjtime called, delta = %llx\n", delta);
+
+ timecounter_adjtime(&bp->timecounter, delta);
+@@ -13298,6 +13304,12 @@ static int bnx2x_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
+ struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info);
+ u64 ns;
+
++ if (!netif_running(bp->dev)) {
++ DP(BNX2X_MSG_PTP,
++ "PTP gettime called while the interface is down\n");
++ return -ENETDOWN;
++ }
++
+ ns = timecounter_read(&bp->timecounter);
+
+ DP(BNX2X_MSG_PTP, "PTP gettime called, ns = %llu\n", ns);
+@@ -13313,6 +13325,12 @@ static int bnx2x_ptp_settime(struct ptp_clock_info *ptp,
+ struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info);
+ u64 ns;
+
++ if (!netif_running(bp->dev)) {
++ DP(BNX2X_MSG_PTP,
++ "PTP settime called while the interface is down\n");
++ return -ENETDOWN;
++ }
++
+ ns = timespec64_to_ns(ts);
+
+ DP(BNX2X_MSG_PTP, "PTP settime called, ns = %llu\n", ns);
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
+index 06b8c0d8fd3b..996d2dc21bde 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
+@@ -852,7 +852,7 @@ int bnx2x_vfpf_set_mcast(struct net_device *dev)
+ struct bnx2x *bp = netdev_priv(dev);
+ struct vfpf_set_q_filters_tlv *req = &bp->vf2pf_mbox->req.set_q_filters;
+ struct pfvf_general_resp_tlv *resp = &bp->vf2pf_mbox->resp.general_resp;
+- int rc, i = 0;
++ int rc = 0, i = 0;
+ struct netdev_hw_addr *ha;
+
+ if (bp->state != BNX2X_STATE_OPEN) {
+@@ -867,6 +867,15 @@ int bnx2x_vfpf_set_mcast(struct net_device *dev)
+ /* Get Rx mode requested */
+ DP(NETIF_MSG_IFUP, "dev->flags = %x\n", dev->flags);
+
++ /* We support PFVF_MAX_MULTICAST_PER_VF mcast addresses tops */
++ if (netdev_mc_count(dev) > PFVF_MAX_MULTICAST_PER_VF) {
++ DP(NETIF_MSG_IFUP,
++ "VF supports not more than %d multicast MAC addresses\n",
++ PFVF_MAX_MULTICAST_PER_VF);
++ rc = -EINVAL;
++ goto out;
++ }
++
+ netdev_for_each_mc_addr(ha, dev) {
+ DP(NETIF_MSG_IFUP, "Adding mcast MAC: %pM\n",
+ bnx2x_mc_addr(ha));
+@@ -874,16 +883,6 @@ int bnx2x_vfpf_set_mcast(struct net_device *dev)
+ i++;
+ }
+
+- /* We support four PFVF_MAX_MULTICAST_PER_VF mcast
+- * addresses tops
+- */
+- if (i >= PFVF_MAX_MULTICAST_PER_VF) {
+- DP(NETIF_MSG_IFUP,
+- "VF supports not more than %d multicast MAC addresses\n",
+- PFVF_MAX_MULTICAST_PER_VF);
+- return -EINVAL;
+- }
+-
+ req->n_multicast = i;
+ req->flags |= VFPF_SET_Q_FILTERS_MULTICAST_CHANGED;
+ req->vf_qid = 0;
+@@ -908,7 +907,7 @@ int bnx2x_vfpf_set_mcast(struct net_device *dev)
+ out:
+ bnx2x_vfpf_finalize(bp, &req->first_tlv);
+
+- return 0;
++ return rc;
+ }
+
+ int bnx2x_vfpf_storm_rx_mode(struct bnx2x *bp)
+diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+index a9fcac044e9e..77fc04271244 100644
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+@@ -1,7 +1,7 @@
+ /*
+ * Broadcom GENET (Gigabit Ethernet) controller driver
+ *
+- * Copyright (c) 2014 Broadcom Corporation
++ * Copyright (c) 2014-2017 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -631,8 +631,9 @@ static const struct bcmgenet_stats bcmgenet_gstrings_stats[] = {
+ STAT_GENET_RUNT("rx_runt_bytes", mib.rx_runt_bytes),
+ /* Misc UniMAC counters */
+ STAT_GENET_MISC("rbuf_ovflow_cnt", mib.rbuf_ovflow_cnt,
+- UMAC_RBUF_OVFL_CNT),
+- STAT_GENET_MISC("rbuf_err_cnt", mib.rbuf_err_cnt, UMAC_RBUF_ERR_CNT),
++ UMAC_RBUF_OVFL_CNT_V1),
++ STAT_GENET_MISC("rbuf_err_cnt", mib.rbuf_err_cnt,
++ UMAC_RBUF_ERR_CNT_V1),
+ STAT_GENET_MISC("mdf_err_cnt", mib.mdf_err_cnt, UMAC_MDF_ERR_CNT),
+ STAT_GENET_SOFT_MIB("alloc_rx_buff_failed", mib.alloc_rx_buff_failed),
+ STAT_GENET_SOFT_MIB("rx_dma_failed", mib.rx_dma_failed),
+@@ -675,6 +676,45 @@ static void bcmgenet_get_strings(struct net_device *dev, u32 stringset,
+ }
+ }
+
++static u32 bcmgenet_update_stat_misc(struct bcmgenet_priv *priv, u16 offset)
++{
++ u16 new_offset;
++ u32 val;
++
++ switch (offset) {
++ case UMAC_RBUF_OVFL_CNT_V1:
++ if (GENET_IS_V2(priv))
++ new_offset = RBUF_OVFL_CNT_V2;
++ else
++ new_offset = RBUF_OVFL_CNT_V3PLUS;
++
++ val = bcmgenet_rbuf_readl(priv, new_offset);
++ /* clear if overflowed */
++ if (val == ~0)
++ bcmgenet_rbuf_writel(priv, 0, new_offset);
++ break;
++ case UMAC_RBUF_ERR_CNT_V1:
++ if (GENET_IS_V2(priv))
++ new_offset = RBUF_ERR_CNT_V2;
++ else
++ new_offset = RBUF_ERR_CNT_V3PLUS;
++
++ val = bcmgenet_rbuf_readl(priv, new_offset);
++ /* clear if overflowed */
++ if (val == ~0)
++ bcmgenet_rbuf_writel(priv, 0, new_offset);
++ break;
++ default:
++ val = bcmgenet_umac_readl(priv, offset);
++ /* clear if overflowed */
++ if (val == ~0)
++ bcmgenet_umac_writel(priv, 0, offset);
++ break;
++ }
++
++ return val;
++}
++
+ static void bcmgenet_update_mib_counters(struct bcmgenet_priv *priv)
+ {
+ int i, j = 0;
+@@ -690,19 +730,28 @@ static void bcmgenet_update_mib_counters(struct bcmgenet_priv *priv)
+ case BCMGENET_STAT_NETDEV:
+ case BCMGENET_STAT_SOFT:
+ continue;
+- case BCMGENET_STAT_MIB_RX:
+- case BCMGENET_STAT_MIB_TX:
+ case BCMGENET_STAT_RUNT:
+- if (s->type != BCMGENET_STAT_MIB_RX)
+- offset = BCMGENET_STAT_OFFSET;
++ offset += BCMGENET_STAT_OFFSET;
++ /* fall through */
++ case BCMGENET_STAT_MIB_TX:
++ offset += BCMGENET_STAT_OFFSET;
++ /* fall through */
++ case BCMGENET_STAT_MIB_RX:
+ val = bcmgenet_umac_readl(priv,
+ UMAC_MIB_START + j + offset);
++ offset = 0; /* Reset Offset */
+ break;
+ case BCMGENET_STAT_MISC:
+- val = bcmgenet_umac_readl(priv, s->reg_offset);
+- /* clear if overflowed */
+- if (val == ~0)
+- bcmgenet_umac_writel(priv, 0, s->reg_offset);
++ if (GENET_IS_V1(priv)) {
++ val = bcmgenet_umac_readl(priv, s->reg_offset);
++ /* clear if overflowed */
++ if (val == ~0)
++ bcmgenet_umac_writel(priv, 0,
++ s->reg_offset);
++ } else {
++ val = bcmgenet_update_stat_misc(priv,
++ s->reg_offset);
++ }
+ break;
+ }
+
+@@ -3018,6 +3067,12 @@ static void bcmgenet_set_hw_params(struct bcmgenet_priv *priv)
+ */
+ gphy_rev = reg & 0xffff;
+
++ /* This is reserved so should require special treatment */
++ if (gphy_rev == 0 || gphy_rev == 0x01ff) {
++ pr_warn("Invalid GPHY revision detected: 0x%04x\n", gphy_rev);
++ return;
++ }
++
+ /* This is the good old scheme, just GPHY major, no minor nor patch */
+ if ((gphy_rev & 0xf0) != 0)
+ priv->gphy_rev = gphy_rev << 8;
+@@ -3026,12 +3081,6 @@ static void bcmgenet_set_hw_params(struct bcmgenet_priv *priv)
+ else if ((gphy_rev & 0xff00) != 0)
+ priv->gphy_rev = gphy_rev;
+
+- /* This is reserved so should require special treatment */
+- else if (gphy_rev == 0 || gphy_rev == 0x01ff) {
+- pr_warn("Invalid GPHY revision detected: 0x%04x\n", gphy_rev);
+- return;
+- }
+-
+ #ifdef CONFIG_PHYS_ADDR_T_64BIT
+ if (!(params->flags & GENET_HAS_40BITS))
+ pr_warn("GENET does not support 40-bits PA\n");
+@@ -3073,6 +3122,7 @@ static int bcmgenet_probe(struct platform_device *pdev)
+ const void *macaddr;
+ struct resource *r;
+ int err = -EIO;
++ const char *phy_mode_str;
+
+ /* Up to GENET_MAX_MQ_CNT + 1 TX queues and RX queues */
+ dev = alloc_etherdev_mqs(sizeof(*priv), GENET_MAX_MQ_CNT + 1,
+@@ -3175,6 +3225,13 @@ static int bcmgenet_probe(struct platform_device *pdev)
+ priv->clk_eee = NULL;
+ }
+
++ /* If this is an internal GPHY, power it on now, before UniMAC is
++ * brought out of reset as absolutely no UniMAC activity is allowed
++ */
++ if (dn && !of_property_read_string(dn, "phy-mode", &phy_mode_str) &&
++ !strcasecmp(phy_mode_str, "internal"))
++ bcmgenet_power_up(priv, GENET_POWER_PASSIVE);
++
+ err = reset_umac(priv);
+ if (err)
+ goto err_clk_disable;
+@@ -3234,7 +3291,8 @@ static int bcmgenet_suspend(struct device *d)
+
+ bcmgenet_netif_stop(dev);
+
+- phy_suspend(priv->phydev);
++ if (!device_may_wakeup(d))
++ phy_suspend(priv->phydev);
+
+ netif_device_detach(dev);
+
+@@ -3331,7 +3389,8 @@ static int bcmgenet_resume(struct device *d)
+
+ netif_device_attach(dev);
+
+- phy_resume(priv->phydev);
++ if (!device_may_wakeup(d))
++ phy_resume(priv->phydev);
+
+ if (priv->eee.eee_enabled)
+ bcmgenet_eee_enable_set(dev, true);
+diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+index 6f2887a5e0be..ae3979a4ca93 100644
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+@@ -1,5 +1,5 @@
+ /*
+- * Copyright (c) 2014 Broadcom Corporation
++ * Copyright (c) 2014-2017 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -214,7 +214,9 @@ struct bcmgenet_mib_counters {
+ #define MDIO_REG_SHIFT 16
+ #define MDIO_REG_MASK 0x1F
+
+-#define UMAC_RBUF_OVFL_CNT 0x61C
++#define UMAC_RBUF_OVFL_CNT_V1 0x61C
++#define RBUF_OVFL_CNT_V2 0x80
++#define RBUF_OVFL_CNT_V3PLUS 0x94
+
+ #define UMAC_MPD_CTRL 0x620
+ #define MPD_EN (1 << 0)
+@@ -224,7 +226,9 @@ struct bcmgenet_mib_counters {
+
+ #define UMAC_MPD_PW_MS 0x624
+ #define UMAC_MPD_PW_LS 0x628
+-#define UMAC_RBUF_ERR_CNT 0x634
++#define UMAC_RBUF_ERR_CNT_V1 0x634
++#define RBUF_ERR_CNT_V2 0x84
++#define RBUF_ERR_CNT_V3PLUS 0x98
+ #define UMAC_MDF_ERR_CNT 0x638
+ #define UMAC_MDF_CTRL 0x650
+ #define UMAC_MDF_ADDR 0x654
+diff --git a/drivers/net/ethernet/dec/tulip/tulip_core.c b/drivers/net/ethernet/dec/tulip/tulip_core.c
+index ed41559bae77..b553409e04ad 100644
+--- a/drivers/net/ethernet/dec/tulip/tulip_core.c
++++ b/drivers/net/ethernet/dec/tulip/tulip_core.c
+@@ -98,8 +98,7 @@ static int csr0 = 0x01A00000 | 0x4800;
+ #elif defined(__mips__)
+ static int csr0 = 0x00200000 | 0x4000;
+ #else
+-#warning Processor architecture undefined!
+-static int csr0 = 0x00A00000 | 0x4800;
++static int csr0;
+ #endif
+
+ /* Operational parameters that usually are not changed. */
+@@ -1982,6 +1981,12 @@ static int __init tulip_init (void)
+ pr_info("%s", version);
+ #endif
+
++ if (!csr0) {
++ pr_warn("tulip: unknown CPU architecture, using default csr0\n");
++ /* default to 8 longword cache line alignment */
++ csr0 = 0x00A00000 | 0x4800;
++ }
++
+ /* copy module parms into globals */
+ tulip_rx_copybreak = rx_copybreak;
+ tulip_max_interrupt_work = max_interrupt_work;
+diff --git a/drivers/net/ethernet/dec/tulip/winbond-840.c b/drivers/net/ethernet/dec/tulip/winbond-840.c
+index 9beb3d34d4ba..3c0e4d5c5fef 100644
+--- a/drivers/net/ethernet/dec/tulip/winbond-840.c
++++ b/drivers/net/ethernet/dec/tulip/winbond-840.c
+@@ -907,7 +907,7 @@ static void init_registers(struct net_device *dev)
+ #elif defined(CONFIG_SPARC) || defined (CONFIG_PARISC) || defined(CONFIG_ARM)
+ i |= 0x4800;
+ #else
+-#warning Processor architecture undefined
++ dev_warn(&dev->dev, "unknown CPU architecture, using default csr0 setting\n");
+ i |= 0x4800;
+ #endif
+ iowrite32(i, ioaddr + PCIBusCfg);
+diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
+index 67aec18dd76c..fe5a7d207b1d 100644
+--- a/drivers/net/ethernet/freescale/fec_main.c
++++ b/drivers/net/ethernet/freescale/fec_main.c
+@@ -2850,6 +2850,7 @@ static void set_multicast_list(struct net_device *ndev)
+ struct netdev_hw_addr *ha;
+ unsigned int i, bit, data, crc, tmp;
+ unsigned char hash;
++ unsigned int hash_high = 0, hash_low = 0;
+
+ if (ndev->flags & IFF_PROMISC) {
+ tmp = readl(fep->hwp + FEC_R_CNTRL);
+@@ -2872,11 +2873,7 @@ static void set_multicast_list(struct net_device *ndev)
+ return;
+ }
+
+- /* Clear filter and add the addresses in hash register
+- */
+- writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+- writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+-
++ /* Add the addresses in hash register */
+ netdev_for_each_mc_addr(ha, ndev) {
+ /* calculate crc32 value of mac address */
+ crc = 0xffffffff;
+@@ -2894,16 +2891,14 @@ static void set_multicast_list(struct net_device *ndev)
+ */
+ hash = (crc >> (32 - HASH_BITS)) & 0x3f;
+
+- if (hash > 31) {
+- tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+- tmp |= 1 << (hash - 32);
+- writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+- } else {
+- tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+- tmp |= 1 << hash;
+- writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+- }
++ if (hash > 31)
++ hash_high |= 1 << (hash - 32);
++ else
++ hash_low |= 1 << hash;
+ }
++
++ writel(hash_high, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
++ writel(hash_low, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+ }
+
+ /* Set a MAC change in hardware. */
+diff --git a/drivers/net/ethernet/intel/igb/e1000_phy.c b/drivers/net/ethernet/intel/igb/e1000_phy.c
+index c1bb64d8366f..62e36649ea09 100644
+--- a/drivers/net/ethernet/intel/igb/e1000_phy.c
++++ b/drivers/net/ethernet/intel/igb/e1000_phy.c
+@@ -83,6 +83,10 @@ s32 igb_get_phy_id(struct e1000_hw *hw)
+ s32 ret_val = 0;
+ u16 phy_id;
+
++ /* ensure PHY page selection to fix misconfigured i210 */
++ if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211))
++ phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 0);
++
+ ret_val = phy->ops.read_reg(hw, PHY_ID1, &phy_id);
+ if (ret_val)
+ goto out;
+diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
+index 3756e45d8cec..1ec0b405aa81 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
++++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
+@@ -2262,6 +2262,17 @@ static int sync_toggles(struct mlx4_dev *dev)
+ rd_toggle = swab32(readl(&priv->mfunc.comm->slave_read));
+ if (wr_toggle == 0xffffffff || rd_toggle == 0xffffffff) {
+ /* PCI might be offline */
++
++ /* If device removal has been requested,
++ * do not continue retrying.
++ */
++ if (dev->persist->interface_state &
++ MLX4_INTERFACE_STATE_NOWAIT) {
++ mlx4_warn(dev,
++ "communication channel is offline\n");
++ return -EIO;
++ }
++
+ msleep(100);
+ wr_toggle = swab32(readl(&priv->mfunc.comm->
+ slave_write));
+diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
+index 115d301f1f61..1f931e6ae3cb 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/main.c
++++ b/drivers/net/ethernet/mellanox/mlx4/main.c
+@@ -1717,6 +1717,14 @@ static int mlx4_comm_check_offline(struct mlx4_dev *dev)
+ (u32)(1 << COMM_CHAN_OFFLINE_OFFSET));
+ if (!offline_bit)
+ return 0;
++
++ /* If device removal has been requested,
++ * do not continue retrying.
++ */
++ if (dev->persist->interface_state &
++ MLX4_INTERFACE_STATE_NOWAIT)
++ break;
++
+ /* There are cases as part of AER/Reset flow that PF needs
+ * around 100 msec to load. We therefore sleep for 100 msec
+ * to allow other tasks to make use of that CPU during this
+@@ -3459,6 +3467,9 @@ static void mlx4_remove_one(struct pci_dev *pdev)
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ int active_vfs = 0;
+
++ if (mlx4_is_slave(dev))
++ persist->interface_state |= MLX4_INTERFACE_STATE_NOWAIT;
++
+ mutex_lock(&persist->interface_state_mutex);
+ persist->interface_state |= MLX4_INTERFACE_STATE_DELETION;
+ mutex_unlock(&persist->interface_state_mutex);
+diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
+index 28425e5ea91f..316fe86040d4 100644
+--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
++++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
+@@ -87,7 +87,7 @@ static struct mlx5_profile profile[] = {
+ [2] = {
+ .mask = MLX5_PROF_MASK_QP_SIZE |
+ MLX5_PROF_MASK_MR_CACHE,
+- .log_max_qp = 17,
++ .log_max_qp = 18,
+ .mr_cache[0] = {
+ .size = 500,
+ .limit = 250
+diff --git a/drivers/net/ethernet/ti/cpmac.c b/drivers/net/ethernet/ti/cpmac.c
+index dd9430043536..cf5ce371ec21 100644
+--- a/drivers/net/ethernet/ti/cpmac.c
++++ b/drivers/net/ethernet/ti/cpmac.c
+@@ -1235,7 +1235,7 @@ int cpmac_init(void)
+ goto fail_alloc;
+ }
+
+-#warning FIXME: unhardcode gpio&reset bits
++ /* FIXME: unhardcode gpio&reset bits */
+ ar7_gpio_disable(26);
+ ar7_gpio_disable(27);
+ ar7_device_reset(AR7_RESET_BIT_CPMAC_LO);
+diff --git a/drivers/net/irda/w83977af_ir.c b/drivers/net/irda/w83977af_ir.c
+index 4e3d2e7c697c..e8c3a8c32534 100644
+--- a/drivers/net/irda/w83977af_ir.c
++++ b/drivers/net/irda/w83977af_ir.c
+@@ -518,7 +518,9 @@ static netdev_tx_t w83977af_hard_xmit(struct sk_buff *skb,
+
+ mtt = irda_get_mtt(skb);
+ pr_debug("%s(%ld), mtt=%d\n", __func__ , jiffies, mtt);
+- if (mtt)
++ if (mtt > 1000)
++ mdelay(mtt/1000);
++ else if (mtt)
+ udelay(mtt);
+
+ /* Enable DMA interrupt */
+diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
+index 9f59f17dc317..e10cff854b24 100644
+--- a/drivers/net/macvlan.c
++++ b/drivers/net/macvlan.c
+@@ -440,7 +440,7 @@ static rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb)
+ struct macvlan_dev, list);
+ else
+ vlan = macvlan_hash_lookup(port, eth->h_dest);
+- if (vlan == NULL)
++ if (!vlan || vlan->mode == MACVLAN_MODE_SOURCE)
+ return RX_HANDLER_PASS;
+
+ dev = vlan->dev;
+diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
+index 1b1698f98818..9c582da5a08e 100644
+--- a/drivers/net/phy/marvell.c
++++ b/drivers/net/phy/marvell.c
+@@ -763,8 +763,6 @@ static int marvell_read_status(struct phy_device *phydev)
+ if (adv < 0)
+ return adv;
+
+- lpa &= adv;
+-
+ if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
+ phydev->duplex = DUPLEX_FULL;
+ else
+diff --git a/drivers/net/phy/spi_ks8995.c b/drivers/net/phy/spi_ks8995.c
+index 46530159256b..196f04015e8a 100644
+--- a/drivers/net/phy/spi_ks8995.c
++++ b/drivers/net/phy/spi_ks8995.c
+@@ -332,6 +332,7 @@ static int ks8995_probe(struct spi_device *spi)
+ if (err)
+ return err;
+
++ sysfs_attr_init(&ks->regs_attr.attr);
+ err = sysfs_create_bin_file(&spi->dev.kobj, &ks->regs_attr);
+ if (err) {
+ dev_err(&spi->dev, "unable to create sysfs file, err=%d\n",
+diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
+index 51ba895f0522..c30c1fc7889a 100644
+--- a/drivers/net/ppp/ppp_generic.c
++++ b/drivers/net/ppp/ppp_generic.c
+@@ -918,6 +918,7 @@ static __net_exit void ppp_exit_net(struct net *net)
+ {
+ struct ppp_net *pn = net_generic(net, ppp_net_id);
+
++ mutex_destroy(&pn->all_ppp_mutex);
+ idr_destroy(&pn->units_idr);
+ }
+
+diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
+index 422a9379a644..1ad3700ed9c7 100644
+--- a/drivers/net/vxlan.c
++++ b/drivers/net/vxlan.c
+@@ -2432,7 +2432,7 @@ static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[])
+
+ if (data[IFLA_VXLAN_ID]) {
+ __u32 id = nla_get_u32(data[IFLA_VXLAN_ID]);
+- if (id >= VXLAN_VID_MASK)
++ if (id >= VXLAN_N_VID)
+ return -ERANGE;
+ }
+
+diff --git a/drivers/net/wimax/i2400m/usb.c b/drivers/net/wimax/i2400m/usb.c
+index e7f5910a6519..f8eb66ef2944 100644
+--- a/drivers/net/wimax/i2400m/usb.c
++++ b/drivers/net/wimax/i2400m/usb.c
+@@ -467,6 +467,9 @@ int i2400mu_probe(struct usb_interface *iface,
+ struct i2400mu *i2400mu;
+ struct usb_device *usb_dev = interface_to_usbdev(iface);
+
++ if (iface->cur_altsetting->desc.bNumEndpoints < 4)
++ return -ENODEV;
++
+ if (usb_dev->speed != USB_SPEED_HIGH)
+ dev_err(dev, "device not connected as high speed\n");
+
+diff --git a/drivers/net/wireless/ath/ath9k/tx99.c b/drivers/net/wireless/ath/ath9k/tx99.c
+index b4e6304afd40..7ee1a3183a06 100644
+--- a/drivers/net/wireless/ath/ath9k/tx99.c
++++ b/drivers/net/wireless/ath/ath9k/tx99.c
+@@ -180,6 +180,9 @@ static ssize_t write_file_tx99(struct file *file, const char __user *user_buf,
+ ssize_t len;
+ int r;
+
++ if (count < 1)
++ return -EINVAL;
++
+ if (sc->cur_chan->nvifs > 1)
+ return -EOPNOTSUPP;
+
+@@ -187,6 +190,8 @@ static ssize_t write_file_tx99(struct file *file, const char __user *user_buf,
+ if (copy_from_user(buf, user_buf, len))
+ return -EFAULT;
+
++ buf[len] = '\0';
++
+ if (strtobool(buf, &start))
+ return -EINVAL;
+
+diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
+index 03097016fd43..aafb97ce080d 100644
+--- a/drivers/net/wireless/mac80211_hwsim.c
++++ b/drivers/net/wireless/mac80211_hwsim.c
+@@ -2884,6 +2884,7 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
+ {
+ struct hwsim_new_radio_params param = { 0 };
+ const char *hwname = NULL;
++ int ret;
+
+ param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
+ param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
+@@ -2923,7 +2924,9 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
+ param.regd = hwsim_world_regdom_custom[idx];
+ }
+
+- return mac80211_hwsim_new_radio(info, ¶m);
++ ret = mac80211_hwsim_new_radio(info, ¶m);
++ kfree(hwname);
++ return ret;
+ }
+
+ static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
+diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
+index ee0ebff103a4..089a1f41e44e 100644
+--- a/drivers/pci/iov.c
++++ b/drivers/pci/iov.c
+@@ -302,13 +302,6 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
+ return rc;
+ }
+
+- pci_iov_set_numvfs(dev, nr_virtfn);
+- iov->ctrl |= PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE;
+- pci_cfg_access_lock(dev);
+- pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);
+- msleep(100);
+- pci_cfg_access_unlock(dev);
+-
+ iov->initial_VFs = initial;
+ if (nr_virtfn < initial)
+ initial = nr_virtfn;
+@@ -319,6 +312,13 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
+ return retval;
+ }
+
++ pci_iov_set_numvfs(dev, nr_virtfn);
++ iov->ctrl |= PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE;
++ pci_cfg_access_lock(dev);
++ pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);
++ msleep(100);
++ pci_cfg_access_unlock(dev);
++
+ for (i = 0; i < initial; i++) {
+ rc = virtfn_add(dev, i, 0);
+ if (rc)
+@@ -552,21 +552,61 @@ void pci_iov_release(struct pci_dev *dev)
+ }
+
+ /**
+- * pci_iov_resource_bar - get position of the SR-IOV BAR
++ * pci_iov_update_resource - update a VF BAR
+ * @dev: the PCI device
+ * @resno: the resource number
+ *
+- * Returns position of the BAR encapsulated in the SR-IOV capability.
++ * Update a VF BAR in the SR-IOV capability of a PF.
+ */
+-int pci_iov_resource_bar(struct pci_dev *dev, int resno)
++void pci_iov_update_resource(struct pci_dev *dev, int resno)
+ {
+- if (resno < PCI_IOV_RESOURCES || resno > PCI_IOV_RESOURCE_END)
+- return 0;
++ struct pci_sriov *iov = dev->is_physfn ? dev->sriov : NULL;
++ struct resource *res = dev->resource + resno;
++ int vf_bar = resno - PCI_IOV_RESOURCES;
++ struct pci_bus_region region;
++ u16 cmd;
++ u32 new;
++ int reg;
++
++ /*
++ * The generic pci_restore_bars() path calls this for all devices,
++ * including VFs and non-SR-IOV devices. If this is not a PF, we
++ * have nothing to do.
++ */
++ if (!iov)
++ return;
++
++ pci_read_config_word(dev, iov->pos + PCI_SRIOV_CTRL, &cmd);
++ if ((cmd & PCI_SRIOV_CTRL_VFE) && (cmd & PCI_SRIOV_CTRL_MSE)) {
++ dev_WARN(&dev->dev, "can't update enabled VF BAR%d %pR\n",
++ vf_bar, res);
++ return;
++ }
++
++ /*
++ * Ignore unimplemented BARs, unused resource slots for 64-bit
++ * BARs, and non-movable resources, e.g., those described via
++ * Enhanced Allocation.
++ */
++ if (!res->flags)
++ return;
++
++ if (res->flags & IORESOURCE_UNSET)
++ return;
++
++ if (res->flags & IORESOURCE_PCI_FIXED)
++ return;
+
+- BUG_ON(!dev->is_physfn);
++ pcibios_resource_to_bus(dev->bus, ®ion, res);
++ new = region.start;
++ new |= res->flags & ~PCI_BASE_ADDRESS_MEM_MASK;
+
+- return dev->sriov->pos + PCI_SRIOV_BAR +
+- 4 * (resno - PCI_IOV_RESOURCES);
++ reg = iov->pos + PCI_SRIOV_BAR + 4 * vf_bar;
++ pci_write_config_dword(dev, reg, new);
++ if (res->flags & IORESOURCE_MEM_64) {
++ new = region.start >> 16 >> 16;
++ pci_write_config_dword(dev, reg + 4, new);
++ }
+ }
+
+ resource_size_t __weak pcibios_iov_resource_alignment(struct pci_dev *dev,
+diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
+index b5b80a5560ed..409f895b5a3d 100644
+--- a/drivers/pci/pci.c
++++ b/drivers/pci/pci.c
+@@ -4270,36 +4270,6 @@ int pci_select_bars(struct pci_dev *dev, unsigned long flags)
+ }
+ EXPORT_SYMBOL(pci_select_bars);
+
+-/**
+- * pci_resource_bar - get position of the BAR associated with a resource
+- * @dev: the PCI device
+- * @resno: the resource number
+- * @type: the BAR type to be filled in
+- *
+- * Returns BAR position in config space, or 0 if the BAR is invalid.
+- */
+-int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type)
+-{
+- int reg;
+-
+- if (resno < PCI_ROM_RESOURCE) {
+- *type = pci_bar_unknown;
+- return PCI_BASE_ADDRESS_0 + 4 * resno;
+- } else if (resno == PCI_ROM_RESOURCE) {
+- *type = pci_bar_mem32;
+- return dev->rom_base_reg;
+- } else if (resno < PCI_BRIDGE_RESOURCES) {
+- /* device specific resource */
+- *type = pci_bar_unknown;
+- reg = pci_iov_resource_bar(dev, resno);
+- if (reg)
+- return reg;
+- }
+-
+- dev_err(&dev->dev, "BAR %d: invalid resource\n", resno);
+- return 0;
+-}
+-
+ /* Some architectures require additional programming to enable VGA */
+ static arch_set_vga_state_t arch_set_vga_state;
+
+diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
+index 0c039200ed79..9dac40998336 100644
+--- a/drivers/pci/pci.h
++++ b/drivers/pci/pci.h
+@@ -208,7 +208,6 @@ bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
+ int pci_setup_device(struct pci_dev *dev);
+ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
+ struct resource *res, unsigned int reg);
+-int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
+ void pci_configure_ari(struct pci_dev *dev);
+ void __pci_bus_size_bridges(struct pci_bus *bus,
+ struct list_head *realloc_head);
+@@ -263,7 +262,7 @@ static inline void pci_restore_ats_state(struct pci_dev *dev)
+ #ifdef CONFIG_PCI_IOV
+ int pci_iov_init(struct pci_dev *dev);
+ void pci_iov_release(struct pci_dev *dev);
+-int pci_iov_resource_bar(struct pci_dev *dev, int resno);
++void pci_iov_update_resource(struct pci_dev *dev, int resno);
+ resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
+ void pci_restore_iov_state(struct pci_dev *dev);
+ int pci_iov_bus_range(struct pci_bus *bus);
+@@ -277,10 +276,6 @@ static inline void pci_iov_release(struct pci_dev *dev)
+
+ {
+ }
+-static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno)
+-{
+- return 0;
+-}
+ static inline void pci_restore_iov_state(struct pci_dev *dev)
+ {
+ }
+diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
+index 63fc63911295..deb903112974 100644
+--- a/drivers/pci/pcie/pme.c
++++ b/drivers/pci/pcie/pme.c
+@@ -233,6 +233,9 @@ static void pcie_pme_work_fn(struct work_struct *work)
+ break;
+
+ pcie_capability_read_dword(port, PCI_EXP_RTSTA, &rtsta);
++ if (rtsta == (u32) ~0)
++ break;
++
+ if (rtsta & PCI_EXP_RTSTA_PME) {
+ /*
+ * Clear PME status of the port. If there are other
+@@ -280,7 +283,7 @@ static irqreturn_t pcie_pme_irq(int irq, void *context)
+ spin_lock_irqsave(&data->lock, flags);
+ pcie_capability_read_dword(port, PCI_EXP_RTSTA, &rtsta);
+
+- if (!(rtsta & PCI_EXP_RTSTA_PME)) {
++ if (rtsta == (u32) ~0 || !(rtsta & PCI_EXP_RTSTA_PME)) {
+ spin_unlock_irqrestore(&data->lock, flags);
+ return IRQ_NONE;
+ }
+diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
+index 5754d7b48c1f..c7dc06636bf6 100644
+--- a/drivers/pci/probe.c
++++ b/drivers/pci/probe.c
+@@ -223,7 +223,8 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
+ mask64 = (u32)PCI_BASE_ADDRESS_MEM_MASK;
+ }
+ } else {
+- res->flags |= (l & IORESOURCE_ROM_ENABLE);
++ if (l & PCI_ROM_ADDRESS_ENABLE)
++ res->flags |= IORESOURCE_ROM_ENABLE;
+ l64 = l & PCI_ROM_ADDRESS_MASK;
+ sz64 = sz & PCI_ROM_ADDRESS_MASK;
+ mask64 = (u32)PCI_ROM_ADDRESS_MASK;
+diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
+index 8a280e9c2ad1..7e67af2bb366 100644
+--- a/drivers/pci/remove.c
++++ b/drivers/pci/remove.c
+@@ -20,9 +20,9 @@ static void pci_stop_dev(struct pci_dev *dev)
+ pci_pme_active(dev, false);
+
+ if (dev->is_added) {
++ device_release_driver(&dev->dev);
+ pci_proc_detach_device(dev);
+ pci_remove_sysfs_dev_files(dev);
+- device_release_driver(&dev->dev);
+ dev->is_added = 0;
+ }
+
+diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
+index eb0ad530dc43..3eea7fc5e1a2 100644
+--- a/drivers/pci/rom.c
++++ b/drivers/pci/rom.c
+@@ -31,6 +31,11 @@ int pci_enable_rom(struct pci_dev *pdev)
+ if (!res->flags)
+ return -1;
+
++ /*
++ * Ideally pci_update_resource() would update the ROM BAR address,
++ * and we would only set the enable bit here. But apparently some
++ * devices have buggy ROM BARs that read as zero when disabled.
++ */
+ pcibios_resource_to_bus(pdev->bus, ®ion, res);
+ pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_addr);
+ rom_addr &= ~PCI_ROM_ADDRESS_MASK;
+diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
+index 232f9254c11a..00f32ff6f74e 100644
+--- a/drivers/pci/setup-res.c
++++ b/drivers/pci/setup-res.c
+@@ -25,15 +25,13 @@
+ #include <linux/slab.h>
+ #include "pci.h"
+
+-
+-void pci_update_resource(struct pci_dev *dev, int resno)
++static void pci_std_update_resource(struct pci_dev *dev, int resno)
+ {
+ struct pci_bus_region region;
+ bool disable;
+ u16 cmd;
+ u32 new, check, mask;
+ int reg;
+- enum pci_bar_type type;
+ struct resource *res = dev->resource + resno;
+
+ /*
+@@ -55,21 +53,34 @@ void pci_update_resource(struct pci_dev *dev, int resno)
+ return;
+
+ pcibios_resource_to_bus(dev->bus, ®ion, res);
++ new = region.start;
+
+- new = region.start | (res->flags & PCI_REGION_FLAG_MASK);
+- if (res->flags & IORESOURCE_IO)
++ if (res->flags & IORESOURCE_IO) {
+ mask = (u32)PCI_BASE_ADDRESS_IO_MASK;
+- else
++ new |= res->flags & ~PCI_BASE_ADDRESS_IO_MASK;
++ } else if (resno == PCI_ROM_RESOURCE) {
++ mask = (u32)PCI_ROM_ADDRESS_MASK;
++ } else {
+ mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
++ new |= res->flags & ~PCI_BASE_ADDRESS_MEM_MASK;
++ }
+
+- reg = pci_resource_bar(dev, resno, &type);
+- if (!reg)
+- return;
+- if (type != pci_bar_unknown) {
++ if (resno < PCI_ROM_RESOURCE) {
++ reg = PCI_BASE_ADDRESS_0 + 4 * resno;
++ } else if (resno == PCI_ROM_RESOURCE) {
++
++ /*
++ * Apparently some Matrox devices have ROM BARs that read
++ * as zero when disabled, so don't update ROM BARs unless
++ * they're enabled. See https://lkml.org/lkml/2005/8/30/138.
++ */
+ if (!(res->flags & IORESOURCE_ROM_ENABLE))
+ return;
++
++ reg = dev->rom_base_reg;
+ new |= PCI_ROM_ADDRESS_ENABLE;
+- }
++ } else
++ return;
+
+ /*
+ * We can't update a 64-bit BAR atomically, so when possible,
+@@ -105,6 +116,16 @@ void pci_update_resource(struct pci_dev *dev, int resno)
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+ }
+
++void pci_update_resource(struct pci_dev *dev, int resno)
++{
++ if (resno <= PCI_ROM_RESOURCE)
++ pci_std_update_resource(dev, resno);
++#ifdef CONFIG_PCI_IOV
++ else if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
++ pci_iov_update_resource(dev, resno);
++#endif
++}
++
+ int pci_claim_resource(struct pci_dev *dev, int resource)
+ {
+ struct resource *res = &dev->resource[resource];
+diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
+index aeb5729fbda6..029ff74ec53c 100644
+--- a/drivers/pinctrl/Kconfig
++++ b/drivers/pinctrl/Kconfig
+@@ -28,7 +28,8 @@ config DEBUG_PINCTRL
+
+ config PINCTRL_ADI2
+ bool "ADI pin controller driver"
+- depends on BLACKFIN
++ depends on (BF54x || BF60x)
++ depends on !GPIO_ADI
+ select PINMUX
+ select IRQ_DOMAIN
+ help
+diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
+index 166fc60d8b55..faa81ac2d481 100644
+--- a/drivers/rtc/interface.c
++++ b/drivers/rtc/interface.c
+@@ -793,9 +793,23 @@ EXPORT_SYMBOL_GPL(rtc_irq_set_freq);
+ */
+ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer)
+ {
++ struct timerqueue_node *next = timerqueue_getnext(&rtc->timerqueue);
++ struct rtc_time tm;
++ ktime_t now;
++
+ timer->enabled = 1;
++ __rtc_read_time(rtc, &tm);
++ now = rtc_tm_to_ktime(tm);
++
++ /* Skip over expired timers */
++ while (next) {
++ if (next->expires.tv64 >= now.tv64)
++ break;
++ next = timerqueue_iterate_next(next);
++ }
++
+ timerqueue_add(&rtc->timerqueue, &timer->node);
+- if (&timer->node == timerqueue_getnext(&rtc->timerqueue)) {
++ if (!next) {
+ struct rtc_wkalrm alarm;
+ int err;
+ alarm.time = rtc_ktime_to_tm(timer->node.expires);
+diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c
+index f40afdd0e5f5..d5b572266a72 100644
+--- a/drivers/rtc/rtc-s35390a.c
++++ b/drivers/rtc/rtc-s35390a.c
+@@ -15,6 +15,7 @@
+ #include <linux/bitrev.h>
+ #include <linux/bcd.h>
+ #include <linux/slab.h>
++#include <linux/delay.h>
+
+ #define S35390A_CMD_STATUS1 0
+ #define S35390A_CMD_STATUS2 1
+@@ -34,10 +35,14 @@
+ #define S35390A_ALRM_BYTE_HOURS 1
+ #define S35390A_ALRM_BYTE_MINS 2
+
++/* flags for STATUS1 */
+ #define S35390A_FLAG_POC 0x01
+ #define S35390A_FLAG_BLD 0x02
++#define S35390A_FLAG_INT2 0x04
+ #define S35390A_FLAG_24H 0x40
+ #define S35390A_FLAG_RESET 0x80
++
++/* flag for STATUS2 */
+ #define S35390A_FLAG_TEST 0x01
+
+ #define S35390A_INT2_MODE_MASK 0xF0
+@@ -94,19 +99,63 @@ static int s35390a_get_reg(struct s35390a *s35390a, int reg, char *buf, int len)
+ return 0;
+ }
+
+-static int s35390a_reset(struct s35390a *s35390a)
++/*
++ * Returns <0 on error, 0 if rtc is setup fine and 1 if the chip was reset.
++ * To keep the information if an irq is pending, pass the value read from
++ * STATUS1 to the caller.
++ */
++static int s35390a_reset(struct s35390a *s35390a, char *status1)
+ {
+- char buf[1];
+-
+- if (s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, buf, sizeof(buf)) < 0)
+- return -EIO;
+-
+- if (!(buf[0] & (S35390A_FLAG_POC | S35390A_FLAG_BLD)))
++ char buf;
++ int ret;
++ unsigned initcount = 0;
++
++ ret = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, status1, 1);
++ if (ret < 0)
++ return ret;
++
++ if (*status1 & S35390A_FLAG_POC)
++ /*
++ * Do not communicate for 0.5 seconds since the power-on
++ * detection circuit is in operation.
++ */
++ msleep(500);
++ else if (!(*status1 & S35390A_FLAG_BLD))
++ /*
++ * If both POC and BLD are unset everything is fine.
++ */
+ return 0;
+
+- buf[0] |= (S35390A_FLAG_RESET | S35390A_FLAG_24H);
+- buf[0] &= 0xf0;
+- return s35390a_set_reg(s35390a, S35390A_CMD_STATUS1, buf, sizeof(buf));
++ /*
++ * At least one of POC and BLD are set, so reinitialise chip. Keeping
++ * this information in the hardware to know later that the time isn't
++ * valid is unfortunately not possible because POC and BLD are cleared
++ * on read. So the reset is best done now.
++ *
++ * The 24H bit is kept over reset, so set it already here.
++ */
++initialize:
++ *status1 = S35390A_FLAG_24H;
++ buf = S35390A_FLAG_RESET | S35390A_FLAG_24H;
++ ret = s35390a_set_reg(s35390a, S35390A_CMD_STATUS1, &buf, 1);
++
++ if (ret < 0)
++ return ret;
++
++ ret = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, &buf, 1);
++ if (ret < 0)
++ return ret;
++
++ if (buf & (S35390A_FLAG_POC | S35390A_FLAG_BLD)) {
++ /* Try up to five times to reset the chip */
++ if (initcount < 5) {
++ ++initcount;
++ goto initialize;
++ } else
++ return -EIO;
++ }
++
++ return 1;
+ }
+
+ static int s35390a_disable_test_mode(struct s35390a *s35390a)
+@@ -242,6 +291,8 @@ static int s35390a_set_alarm(struct i2c_client *client, struct rtc_wkalrm *alm)
+
+ if (alm->time.tm_wday != -1)
+ buf[S35390A_ALRM_BYTE_WDAY] = bin2bcd(alm->time.tm_wday) | 0x80;
++ else
++ buf[S35390A_ALRM_BYTE_WDAY] = 0;
+
+ buf[S35390A_ALRM_BYTE_HOURS] = s35390a_hr2reg(s35390a,
+ alm->time.tm_hour) | 0x80;
+@@ -269,23 +320,43 @@ static int s35390a_read_alarm(struct i2c_client *client, struct rtc_wkalrm *alm)
+ if (err < 0)
+ return err;
+
+- if (bitrev8(sts) != S35390A_INT2_MODE_ALARM)
+- return -EINVAL;
++ if ((bitrev8(sts) & S35390A_INT2_MODE_MASK) != S35390A_INT2_MODE_ALARM) {
++ /*
++ * When the alarm isn't enabled, the register to configure
++ * the alarm time isn't accessible.
++ */
++ alm->enabled = 0;
++ return 0;
++ } else {
++ alm->enabled = 1;
++ }
+
+ err = s35390a_get_reg(s35390a, S35390A_CMD_INT2_REG1, buf, sizeof(buf));
+ if (err < 0)
+ return err;
+
+ /* This chip returns the bits of each byte in reverse order */
+- for (i = 0; i < 3; ++i) {
++ for (i = 0; i < 3; ++i)
+ buf[i] = bitrev8(buf[i]);
+- buf[i] &= ~0x80;
+- }
+
+- alm->time.tm_wday = bcd2bin(buf[S35390A_ALRM_BYTE_WDAY]);
+- alm->time.tm_hour = s35390a_reg2hr(s35390a,
+- buf[S35390A_ALRM_BYTE_HOURS]);
+- alm->time.tm_min = bcd2bin(buf[S35390A_ALRM_BYTE_MINS]);
++ /*
++ * B0 of the three matching registers is an enable flag. Iff it is set
++ * the configured value is used for matching.
++ */
++ if (buf[S35390A_ALRM_BYTE_WDAY] & 0x80)
++ alm->time.tm_wday =
++ bcd2bin(buf[S35390A_ALRM_BYTE_WDAY] & ~0x80);
++
++ if (buf[S35390A_ALRM_BYTE_HOURS] & 0x80)
++ alm->time.tm_hour =
++ s35390a_reg2hr(s35390a,
++ buf[S35390A_ALRM_BYTE_HOURS] & ~0x80);
++
++ if (buf[S35390A_ALRM_BYTE_MINS] & 0x80)
++ alm->time.tm_min = bcd2bin(buf[S35390A_ALRM_BYTE_MINS] & ~0x80);
++
++ /* alarm triggers always at s=0 */
++ alm->time.tm_sec = 0;
+
+ dev_dbg(&client->dev, "%s: alm is mins=%d, hours=%d, wday=%d\n",
+ __func__, alm->time.tm_min, alm->time.tm_hour,
+@@ -327,11 +398,11 @@ static struct i2c_driver s35390a_driver;
+ static int s35390a_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+ {
+- int err;
++ int err, err_reset;
+ unsigned int i;
+ struct s35390a *s35390a;
+ struct rtc_time tm;
+- char buf[1];
++ char buf, status1;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ err = -ENODEV;
+@@ -360,29 +431,35 @@ static int s35390a_probe(struct i2c_client *client,
+ }
+ }
+
+- err = s35390a_reset(s35390a);
+- if (err < 0) {
++ err_reset = s35390a_reset(s35390a, &status1);
++ if (err_reset < 0) {
++ err = err_reset;
+ dev_err(&client->dev, "error resetting chip\n");
+ goto exit_dummy;
+ }
+
+- err = s35390a_disable_test_mode(s35390a);
+- if (err < 0) {
+- dev_err(&client->dev, "error disabling test mode\n");
+- goto exit_dummy;
+- }
+-
+- err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, buf, sizeof(buf));
+- if (err < 0) {
+- dev_err(&client->dev, "error checking 12/24 hour mode\n");
+- goto exit_dummy;
+- }
+- if (buf[0] & S35390A_FLAG_24H)
++ if (status1 & S35390A_FLAG_24H)
+ s35390a->twentyfourhour = 1;
+ else
+ s35390a->twentyfourhour = 0;
+
+- if (s35390a_get_datetime(client, &tm) < 0)
++ if (status1 & S35390A_FLAG_INT2) {
++ /* disable alarm (and maybe test mode) */
++ buf = 0;
++ err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1);
++ if (err < 0) {
++ dev_err(&client->dev, "error disabling alarm");
++ goto exit_dummy;
++ }
++ } else {
++ err = s35390a_disable_test_mode(s35390a);
++ if (err < 0) {
++ dev_err(&client->dev, "error disabling test mode\n");
++ goto exit_dummy;
++ }
++ }
++
++ if (err_reset > 0 || s35390a_get_datetime(client, &tm) < 0)
+ dev_warn(&client->dev, "clock needs to be set\n");
+
+ device_set_wakeup_capable(&client->dev, 1);
+@@ -395,6 +472,10 @@ static int s35390a_probe(struct i2c_client *client,
+ err = PTR_ERR(s35390a->rtc);
+ goto exit_dummy;
+ }
++
++ if (status1 & S35390A_FLAG_INT2)
++ rtc_update_irq(s35390a->rtc, 1, RTC_AF);
++
+ return 0;
+
+ exit_dummy:
+diff --git a/drivers/scsi/bfa/bfad_debugfs.c b/drivers/scsi/bfa/bfad_debugfs.c
+index 74a307c0a240..8f1c58d4d5b5 100644
+--- a/drivers/scsi/bfa/bfad_debugfs.c
++++ b/drivers/scsi/bfa/bfad_debugfs.c
+@@ -254,7 +254,8 @@ bfad_debugfs_write_regrd(struct file *file, const char __user *buf,
+ struct bfad_s *bfad = port->bfad;
+ struct bfa_s *bfa = &bfad->bfa;
+ struct bfa_ioc_s *ioc = &bfa->ioc;
+- int addr, len, rc, i;
++ int addr, rc, i;
++ u32 len;
+ u32 *regbuf;
+ void __iomem *rb, *reg_addr;
+ unsigned long flags;
+@@ -265,7 +266,7 @@ bfad_debugfs_write_regrd(struct file *file, const char __user *buf,
+ return PTR_ERR(kern_buf);
+
+ rc = sscanf(kern_buf, "%x:%x", &addr, &len);
+- if (rc < 2) {
++ if (rc < 2 || len > (UINT_MAX >> 2)) {
+ printk(KERN_INFO
+ "bfad[%d]: %s failed to read user buf\n",
+ bfad->inst_no, __func__);
+diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
+index 8eab107b53fb..0ef5d9286e0a 100644
+--- a/drivers/scsi/hpsa.c
++++ b/drivers/scsi/hpsa.c
+@@ -4158,7 +4158,7 @@ static void hpsa_scan_complete(struct ctlr_info *h)
+
+ spin_lock_irqsave(&h->scan_lock, flags);
+ h->scan_finished = 1;
+- wake_up_all(&h->scan_wait_queue);
++ wake_up(&h->scan_wait_queue);
+ spin_unlock_irqrestore(&h->scan_lock, flags);
+ }
+
+@@ -4176,11 +4176,23 @@ static void hpsa_scan_start(struct Scsi_Host *sh)
+ if (unlikely(lockup_detected(h)))
+ return hpsa_scan_complete(h);
+
++ /*
++ * If a scan is already waiting to run, no need to add another
++ */
++ spin_lock_irqsave(&h->scan_lock, flags);
++ if (h->scan_waiting) {
++ spin_unlock_irqrestore(&h->scan_lock, flags);
++ return;
++ }
++
++ spin_unlock_irqrestore(&h->scan_lock, flags);
++
+ /* wait until any scan already in progress is finished. */
+ while (1) {
+ spin_lock_irqsave(&h->scan_lock, flags);
+ if (h->scan_finished)
+ break;
++ h->scan_waiting = 1;
+ spin_unlock_irqrestore(&h->scan_lock, flags);
+ wait_event(h->scan_wait_queue, h->scan_finished);
+ /* Note: We don't need to worry about a race between this
+@@ -4190,6 +4202,7 @@ static void hpsa_scan_start(struct Scsi_Host *sh)
+ */
+ }
+ h->scan_finished = 0; /* mark scan as in progress */
++ h->scan_waiting = 0;
+ spin_unlock_irqrestore(&h->scan_lock, flags);
+
+ if (unlikely(lockup_detected(h)))
+@@ -6936,6 +6949,7 @@ reinit_after_soft_reset:
+ goto clean4;
+ init_waitqueue_head(&h->scan_wait_queue);
+ h->scan_finished = 1; /* no scan currently in progress */
++ h->scan_waiting = 0;
+
+ pci_set_drvdata(pdev, h);
+ h->ndevices = 0;
+diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
+index 657713050349..cbaf416d5456 100644
+--- a/drivers/scsi/hpsa.h
++++ b/drivers/scsi/hpsa.h
+@@ -166,6 +166,7 @@ struct ctlr_info {
+ dma_addr_t errinfo_pool_dhandle;
+ unsigned long *cmd_pool_bits;
+ int scan_finished;
++ u8 scan_waiting : 1;
+ spinlock_t scan_lock;
+ wait_queue_head_t scan_wait_queue;
+
+diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
+index 4da8963315c7..30f2fe9ba766 100644
+--- a/drivers/scsi/lpfc/lpfc_els.c
++++ b/drivers/scsi/lpfc/lpfc_els.c
+@@ -7286,11 +7286,17 @@ lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+ spin_unlock_irq(shost->host_lock);
+- if (vport->port_type == LPFC_PHYSICAL_PORT
+- && !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
+- lpfc_issue_init_vfi(vport);
+- else
++ if (mb->mbxStatus == MBX_NOT_FINISHED)
++ break;
++ if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
++ !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) {
++ if (phba->sli_rev == LPFC_SLI_REV4)
++ lpfc_issue_init_vfi(vport);
++ else
++ lpfc_initial_flogi(vport);
++ } else {
+ lpfc_initial_fdisc(vport);
++ }
+ break;
+ }
+ } else {
+diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
+index 1813c45946f4..3757a7399983 100644
+--- a/drivers/scsi/lpfc/lpfc_hw4.h
++++ b/drivers/scsi/lpfc/lpfc_hw4.h
+@@ -1180,6 +1180,7 @@ struct lpfc_mbx_wq_create {
+ #define lpfc_mbx_wq_create_page_size_SHIFT 0
+ #define lpfc_mbx_wq_create_page_size_MASK 0x000000FF
+ #define lpfc_mbx_wq_create_page_size_WORD word1
++#define LPFC_WQ_PAGE_SIZE_4096 0x1
+ #define lpfc_mbx_wq_create_wqe_size_SHIFT 8
+ #define lpfc_mbx_wq_create_wqe_size_MASK 0x0000000F
+ #define lpfc_mbx_wq_create_wqe_size_WORD word1
+@@ -1251,6 +1252,7 @@ struct rq_context {
+ #define lpfc_rq_context_page_size_SHIFT 0 /* Version 1 Only */
+ #define lpfc_rq_context_page_size_MASK 0x000000FF
+ #define lpfc_rq_context_page_size_WORD word0
++#define LPFC_RQ_PAGE_SIZE_4096 0x1
+ uint32_t reserved1;
+ uint32_t word2;
+ #define lpfc_rq_context_cq_id_SHIFT 16
+diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
+index 7ca27e5ef079..625e3ee877ee 100644
+--- a/drivers/scsi/lpfc/lpfc_sli.c
++++ b/drivers/scsi/lpfc/lpfc_sli.c
+@@ -13509,7 +13509,7 @@ lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
+ LPFC_WQ_WQE_SIZE_128);
+ bf_set(lpfc_mbx_wq_create_page_size,
+ &wq_create->u.request_1,
+- (PAGE_SIZE/SLI4_PAGE_SIZE));
++ LPFC_WQ_PAGE_SIZE_4096);
+ page = wq_create->u.request_1.page;
+ break;
+ }
+@@ -13535,8 +13535,9 @@ lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
+ LPFC_WQ_WQE_SIZE_128);
+ break;
+ }
+- bf_set(lpfc_mbx_wq_create_page_size, &wq_create->u.request_1,
+- (PAGE_SIZE/SLI4_PAGE_SIZE));
++ bf_set(lpfc_mbx_wq_create_page_size,
++ &wq_create->u.request_1,
++ LPFC_WQ_PAGE_SIZE_4096);
+ page = wq_create->u.request_1.page;
+ break;
+ default:
+@@ -13722,7 +13723,7 @@ lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq,
+ LPFC_RQE_SIZE_8);
+ bf_set(lpfc_rq_context_page_size,
+ &rq_create->u.request.context,
+- (PAGE_SIZE/SLI4_PAGE_SIZE));
++ LPFC_RQ_PAGE_SIZE_4096);
+ } else {
+ switch (hrq->entry_count) {
+ default:
+diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
+index 9c780740fb82..e712fe745955 100644
+--- a/drivers/scsi/mvsas/mv_sas.c
++++ b/drivers/scsi/mvsas/mv_sas.c
+@@ -737,8 +737,8 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf
+ mv_dprintk("device %016llx not ready.\n",
+ SAS_ADDR(dev->sas_addr));
+
+- rc = SAS_PHY_DOWN;
+- return rc;
++ rc = SAS_PHY_DOWN;
++ return rc;
+ }
+ tei.port = dev->port->lldd_port;
+ if (tei.port && !tei.port->port_attached && !tmf) {
+diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
+index 42d3f82e75c7..55df57341858 100644
+--- a/drivers/scsi/scsi_devinfo.c
++++ b/drivers/scsi/scsi_devinfo.c
+@@ -160,7 +160,7 @@ static struct {
+ {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */
+ {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
+ {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+- {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
++ {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_REPORTLUN2},
+ {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
+ {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
+ {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
+diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
+index 17fbf1d3eadc..8ef1d5e6619a 100644
+--- a/drivers/scsi/scsi_lib.c
++++ b/drivers/scsi/scsi_lib.c
+@@ -1119,7 +1119,8 @@ int scsi_init_io(struct scsi_cmnd *cmd)
+ bool is_mq = (rq->mq_ctx != NULL);
+ int error;
+
+- BUG_ON(!rq->nr_phys_segments);
++ if (WARN_ON_ONCE(!rq->nr_phys_segments))
++ return -EINVAL;
+
+ error = scsi_init_sgtable(rq, &cmd->sdb);
+ if (error)
+diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
+index 80cebe691fee..a678dd10905f 100644
+--- a/drivers/scsi/sd.c
++++ b/drivers/scsi/sd.c
+@@ -1383,11 +1383,15 @@ static int media_not_present(struct scsi_disk *sdkp,
+ **/
+ static unsigned int sd_check_events(struct gendisk *disk, unsigned int clearing)
+ {
+- struct scsi_disk *sdkp = scsi_disk(disk);
+- struct scsi_device *sdp = sdkp->device;
++ struct scsi_disk *sdkp = scsi_disk_get(disk);
++ struct scsi_device *sdp;
+ struct scsi_sense_hdr *sshdr = NULL;
+ int retval;
+
++ if (!sdkp)
++ return 0;
++
++ sdp = sdkp->device;
+ SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_check_events\n"));
+
+ /*
+@@ -1444,6 +1448,7 @@ out:
+ kfree(sshdr);
+ retval = sdp->changed ? DISK_EVENT_MEDIA_CHANGE : 0;
+ sdp->changed = 0;
++ scsi_disk_put(sdkp);
+ return retval;
+ }
+
+diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
+index 51a0cc047b5f..98b56a7069d3 100644
+--- a/drivers/scsi/storvsc_drv.c
++++ b/drivers/scsi/storvsc_drv.c
+@@ -325,8 +325,6 @@ MODULE_PARM_DESC(vcpus_per_sub_channel, "Ratio of VCPUs to subchannels");
+ */
+ static int storvsc_timeout = 180;
+
+-static int msft_blist_flags = BLIST_TRY_VPD_PAGES;
+-
+
+ static void storvsc_on_channel_callback(void *context);
+
+@@ -584,17 +582,18 @@ static int do_bounce_buffer(struct scatterlist *sgl, unsigned int sg_count)
+ for (i = 0; i < sg_count; i++) {
+ if (i == 0) {
+ /* make sure 1st one does not have hole */
+- if (sgl[i].offset + sgl[i].length != PAGE_SIZE)
++ if (sgl->offset + sgl->length != PAGE_SIZE)
+ return i;
+ } else if (i == sg_count - 1) {
+ /* make sure last one does not have hole */
+- if (sgl[i].offset != 0)
++ if (sgl->offset != 0)
+ return i;
+ } else {
+ /* make sure no hole in the middle */
+- if (sgl[i].length != PAGE_SIZE || sgl[i].offset != 0)
++ if (sgl->length != PAGE_SIZE || sgl->offset != 0)
+ return i;
+ }
++ sgl = sg_next(sgl);
+ }
+ return -1;
+ }
+@@ -1416,6 +1415,22 @@ static int storvsc_do_io(struct hv_device *device,
+ return ret;
+ }
+
++static int storvsc_device_alloc(struct scsi_device *sdevice)
++{
++ /*
++ * Set blist flag to permit the reading of the VPD pages even when
++ * the target may claim SPC-2 compliance. MSFT targets currently
++ * claim SPC-2 compliance while they implement post SPC-2 features.
++ * With this flag we can correctly handle WRITE_SAME_16 issues.
++ *
++ * Hypervisor reports SCSI_UNKNOWN type for DVD ROM device but
++ * still supports REPORT LUN.
++ */
++ sdevice->sdev_bflags = BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES;
++
++ return 0;
++}
++
+ static int storvsc_device_configure(struct scsi_device *sdevice)
+ {
+
+@@ -1427,14 +1442,6 @@ static int storvsc_device_configure(struct scsi_device *sdevice)
+
+ sdevice->no_write_same = 1;
+
+- /*
+- * Add blist flags to permit the reading of the VPD pages even when
+- * the target may claim SPC-2 compliance. MSFT targets currently
+- * claim SPC-2 compliance while they implement post SPC-2 features.
+- * With this patch we can correctly handle WRITE_SAME_16 issues.
+- */
+- sdevice->sdev_bflags |= msft_blist_flags;
+-
+ /*
+ * If the host is WIN8 or WIN8 R2, claim conformance to SPC-3
+ * if the device is a MSFT virtual device.
+@@ -1722,6 +1729,7 @@ static struct scsi_host_template scsi_driver = {
+ .eh_host_reset_handler = storvsc_host_reset_handler,
+ .proc_name = "storvsc_host",
+ .eh_timed_out = storvsc_eh_timed_out,
++ .slave_alloc = storvsc_device_alloc,
+ .slave_configure = storvsc_device_configure,
+ .cmd_per_lun = 255,
+ .this_id = -1,
+diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
+index 7872f3c78b51..dc0ffd3dd96a 100644
+--- a/drivers/spi/spi-sh-msiof.c
++++ b/drivers/spi/spi-sh-msiof.c
+@@ -860,7 +860,7 @@ static int sh_msiof_transfer_one(struct spi_master *master,
+ break;
+ copy32 = copy_bswap32;
+ } else if (bits <= 16) {
+- if (l & 1)
++ if (l & 3)
+ break;
+ copy32 = copy_wswap32;
+ } else {
+diff --git a/drivers/staging/lustre/lustre/llite/llite_mmap.c b/drivers/staging/lustre/lustre/llite/llite_mmap.c
+index a90214bb84dd..7511b4dfdfe5 100644
+--- a/drivers/staging/lustre/lustre/llite/llite_mmap.c
++++ b/drivers/staging/lustre/lustre/llite/llite_mmap.c
+@@ -404,15 +404,13 @@ static int ll_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
+ result = VM_FAULT_LOCKED;
+ break;
+ case -ENODATA:
++ case -EAGAIN:
+ case -EFAULT:
+ result = VM_FAULT_NOPAGE;
+ break;
+ case -ENOMEM:
+ result = VM_FAULT_OOM;
+ break;
+- case -EAGAIN:
+- result = VM_FAULT_RETRY;
+- break;
+ default:
+ result = VM_FAULT_SIGBUS;
+ break;
+diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
+index 376e4a0c15c6..8f1844f0547e 100644
+--- a/drivers/staging/vt6655/device_main.c
++++ b/drivers/staging/vt6655/device_main.c
+@@ -1838,10 +1838,11 @@ static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
+ MACbShutdown(priv->PortOffset);
+
+ pci_disable_device(pcid);
+- pci_set_power_state(pcid, pci_choose_state(pcid, state));
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
++ pci_set_power_state(pcid, pci_choose_state(pcid, state));
++
+ return 0;
+ }
+
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 8df1ff3766c4..2d6b0cf0929e 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -682,6 +682,7 @@ static int iscsit_add_reject_from_cmd(
+ unsigned char *buf)
+ {
+ struct iscsi_conn *conn;
++ const bool do_put = cmd->se_cmd.se_tfo != NULL;
+
+ if (!cmd->conn) {
+ pr_err("cmd->conn is NULL for ITT: 0x%08x\n",
+@@ -712,7 +713,7 @@ static int iscsit_add_reject_from_cmd(
+ * Perform the kref_put now if se_cmd has already been setup by
+ * scsit_setup_scsi_cmd()
+ */
+- if (cmd->se_cmd.se_tfo != NULL) {
++ if (do_put) {
+ pr_debug("iscsi reject: calling target_put_sess_cmd >>>>>>\n");
+ target_put_sess_cmd(&cmd->se_cmd);
+ }
+diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
+index f6169f722991..bc578d3d2178 100644
+--- a/drivers/target/iscsi/iscsi_target_configfs.c
++++ b/drivers/target/iscsi/iscsi_target_configfs.c
+@@ -1466,7 +1466,7 @@ static struct se_portal_group *lio_target_tiqn_addtpg(
+ ret = core_tpg_register(&iscsi_ops, wwn, &tpg->tpg_se_tpg,
+ tpg, TRANSPORT_TPG_TYPE_NORMAL);
+ if (ret < 0)
+- return NULL;
++ goto free_out;
+
+ ret = iscsit_tpg_add_portal_group(tiqn, tpg);
+ if (ret != 0)
+@@ -1478,6 +1478,7 @@ static struct se_portal_group *lio_target_tiqn_addtpg(
+ return &tpg->tpg_se_tpg;
+ out:
+ core_tpg_deregister(&tpg->tpg_se_tpg);
++free_out:
+ kfree(tpg);
+ return NULL;
+ }
+diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
+index 4f8d4d459aa4..edb880faa754 100644
+--- a/drivers/target/target_core_alua.c
++++ b/drivers/target/target_core_alua.c
+@@ -1126,13 +1126,11 @@ static int core_alua_do_transition_tg_pt(
+ unsigned long transition_tmo;
+
+ transition_tmo = tg_pt_gp->tg_pt_gp_implicit_trans_secs * HZ;
+- queue_delayed_work(tg_pt_gp->tg_pt_gp_dev->tmr_wq,
+- &tg_pt_gp->tg_pt_gp_transition_work,
+- transition_tmo);
++ schedule_delayed_work(&tg_pt_gp->tg_pt_gp_transition_work,
++ transition_tmo);
+ } else {
+ tg_pt_gp->tg_pt_gp_transition_complete = &wait;
+- queue_delayed_work(tg_pt_gp->tg_pt_gp_dev->tmr_wq,
+- &tg_pt_gp->tg_pt_gp_transition_work, 0);
++ schedule_delayed_work(&tg_pt_gp->tg_pt_gp_transition_work, 0);
+ wait_for_completion(&wait);
+ tg_pt_gp->tg_pt_gp_transition_complete = NULL;
+ }
+diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
+index dee7dfdf203a..5d5e5cd77261 100644
+--- a/drivers/target/target_core_file.c
++++ b/drivers/target/target_core_file.c
+@@ -539,6 +539,10 @@ fd_do_unmap(struct se_cmd *cmd, void *priv, sector_t lba, sector_t nolb)
+ struct inode *inode = file->f_mapping->host;
+ int ret;
+
++ if (!nolb) {
++ return 0;
++ }
++
+ if (cmd->se_dev->dev_attrib.pi_prot_type) {
+ ret = fd_do_prot_unmap(cmd, lba, nolb);
+ if (ret)
+diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
+index 57fd4e14d4eb..770fc5ae26a7 100644
+--- a/drivers/target/target_core_pr.c
++++ b/drivers/target/target_core_pr.c
+@@ -58,8 +58,10 @@ void core_pr_dump_initiator_port(
+ char *buf,
+ u32 size)
+ {
+- if (!pr_reg->isid_present_at_reg)
++ if (!pr_reg->isid_present_at_reg) {
+ buf[0] = '\0';
++ return;
++ }
+
+ snprintf(buf, size, ",i,0x%s", pr_reg->pr_reg_isid);
+ }
+diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
+index ec4ea5940bf7..96932e88464d 100644
+--- a/drivers/thermal/step_wise.c
++++ b/drivers/thermal/step_wise.c
+@@ -31,8 +31,7 @@
+ * If the temperature is higher than a trip point,
+ * a. if the trend is THERMAL_TREND_RAISING, use higher cooling
+ * state for this trip point
+- * b. if the trend is THERMAL_TREND_DROPPING, use lower cooling
+- * state for this trip point
++ * b. if the trend is THERMAL_TREND_DROPPING, do nothing
+ * c. if the trend is THERMAL_TREND_RAISE_FULL, use upper limit
+ * for this trip point
+ * d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit
+@@ -94,9 +93,11 @@ static unsigned long get_target_state(struct thermal_instance *instance,
+ if (!throttle)
+ next_target = THERMAL_NO_TARGET;
+ } else {
+- next_target = cur_state - 1;
+- if (next_target > instance->upper)
+- next_target = instance->upper;
++ if (!throttle) {
++ next_target = cur_state - 1;
++ if (next_target > instance->upper)
++ next_target = instance->upper;
++ }
+ }
+ break;
+ case THERMAL_TREND_DROP_FULL:
+diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
+index 644ddb841d9f..6d1e2f746ab4 100644
+--- a/drivers/tty/n_hdlc.c
++++ b/drivers/tty/n_hdlc.c
+@@ -114,7 +114,7 @@
+ #define DEFAULT_TX_BUF_COUNT 3
+
+ struct n_hdlc_buf {
+- struct n_hdlc_buf *link;
++ struct list_head list_item;
+ int count;
+ char buf[1];
+ };
+@@ -122,8 +122,7 @@ struct n_hdlc_buf {
+ #define N_HDLC_BUF_SIZE (sizeof(struct n_hdlc_buf) + maxframe)
+
+ struct n_hdlc_buf_list {
+- struct n_hdlc_buf *head;
+- struct n_hdlc_buf *tail;
++ struct list_head list;
+ int count;
+ spinlock_t spinlock;
+ };
+@@ -136,7 +135,6 @@ struct n_hdlc_buf_list {
+ * @backup_tty - TTY to use if tty gets closed
+ * @tbusy - reentrancy flag for tx wakeup code
+ * @woke_up - FIXME: describe this field
+- * @tbuf - currently transmitting tx buffer
+ * @tx_buf_list - list of pending transmit frame buffers
+ * @rx_buf_list - list of received frame buffers
+ * @tx_free_buf_list - list unused transmit frame buffers
+@@ -149,7 +147,6 @@ struct n_hdlc {
+ struct tty_struct *backup_tty;
+ int tbusy;
+ int woke_up;
+- struct n_hdlc_buf *tbuf;
+ struct n_hdlc_buf_list tx_buf_list;
+ struct n_hdlc_buf_list rx_buf_list;
+ struct n_hdlc_buf_list tx_free_buf_list;
+@@ -159,7 +156,8 @@ struct n_hdlc {
+ /*
+ * HDLC buffer list manipulation functions
+ */
+-static void n_hdlc_buf_list_init(struct n_hdlc_buf_list *list);
++static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list,
++ struct n_hdlc_buf *buf);
+ static void n_hdlc_buf_put(struct n_hdlc_buf_list *list,
+ struct n_hdlc_buf *buf);
+ static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *list);
+@@ -209,16 +207,9 @@ static void flush_tx_queue(struct tty_struct *tty)
+ {
+ struct n_hdlc *n_hdlc = tty2n_hdlc(tty);
+ struct n_hdlc_buf *buf;
+- unsigned long flags;
+
+ while ((buf = n_hdlc_buf_get(&n_hdlc->tx_buf_list)))
+ n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, buf);
+- spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock, flags);
+- if (n_hdlc->tbuf) {
+- n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, n_hdlc->tbuf);
+- n_hdlc->tbuf = NULL;
+- }
+- spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags);
+ }
+
+ static struct tty_ldisc_ops n_hdlc_ldisc = {
+@@ -284,7 +275,6 @@ static void n_hdlc_release(struct n_hdlc *n_hdlc)
+ } else
+ break;
+ }
+- kfree(n_hdlc->tbuf);
+ kfree(n_hdlc);
+
+ } /* end of n_hdlc_release() */
+@@ -403,13 +393,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
+ n_hdlc->woke_up = 0;
+ spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags);
+
+- /* get current transmit buffer or get new transmit */
+- /* buffer from list of pending transmit buffers */
+-
+- tbuf = n_hdlc->tbuf;
+- if (!tbuf)
+- tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
+-
++ tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
+ while (tbuf) {
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)sending frame %p, count=%d\n",
+@@ -421,7 +405,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
+
+ /* rollback was possible and has been done */
+ if (actual == -ERESTARTSYS) {
+- n_hdlc->tbuf = tbuf;
++ n_hdlc_buf_return(&n_hdlc->tx_buf_list, tbuf);
+ break;
+ }
+ /* if transmit error, throw frame away by */
+@@ -436,10 +420,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
+
+ /* free current transmit buffer */
+ n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, tbuf);
+-
+- /* this tx buffer is done */
+- n_hdlc->tbuf = NULL;
+-
++
+ /* wait up sleeping writers */
+ wake_up_interruptible(&tty->write_wait);
+
+@@ -449,10 +430,12 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)frame %p pending\n",
+ __FILE__,__LINE__,tbuf);
+-
+- /* buffer not accepted by driver */
+- /* set this buffer as pending buffer */
+- n_hdlc->tbuf = tbuf;
++
++ /*
++ * the buffer was not accepted by driver,
++ * return it back into tx queue
++ */
++ n_hdlc_buf_return(&n_hdlc->tx_buf_list, tbuf);
+ break;
+ }
+ }
+@@ -750,7 +733,8 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
+ int error = 0;
+ int count;
+ unsigned long flags;
+-
++ struct n_hdlc_buf *buf = NULL;
++
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_ioctl() called %d\n",
+ __FILE__,__LINE__,cmd);
+@@ -764,8 +748,10 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
+ /* report count of read data available */
+ /* in next available frame (if any) */
+ spin_lock_irqsave(&n_hdlc->rx_buf_list.spinlock,flags);
+- if (n_hdlc->rx_buf_list.head)
+- count = n_hdlc->rx_buf_list.head->count;
++ buf = list_first_entry_or_null(&n_hdlc->rx_buf_list.list,
++ struct n_hdlc_buf, list_item);
++ if (buf)
++ count = buf->count;
+ else
+ count = 0;
+ spin_unlock_irqrestore(&n_hdlc->rx_buf_list.spinlock,flags);
+@@ -777,8 +763,10 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
+ count = tty_chars_in_buffer(tty);
+ /* add size of next output frame in queue */
+ spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock,flags);
+- if (n_hdlc->tx_buf_list.head)
+- count += n_hdlc->tx_buf_list.head->count;
++ buf = list_first_entry_or_null(&n_hdlc->tx_buf_list.list,
++ struct n_hdlc_buf, list_item);
++ if (buf)
++ count += buf->count;
+ spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock,flags);
+ error = put_user(count, (int __user *)arg);
+ break;
+@@ -826,14 +814,14 @@ static unsigned int n_hdlc_tty_poll(struct tty_struct *tty, struct file *filp,
+ poll_wait(filp, &tty->write_wait, wait);
+
+ /* set bits for operations that won't block */
+- if (n_hdlc->rx_buf_list.head)
++ if (!list_empty(&n_hdlc->rx_buf_list.list))
+ mask |= POLLIN | POLLRDNORM; /* readable */
+ if (test_bit(TTY_OTHER_CLOSED, &tty->flags))
+ mask |= POLLHUP;
+ if (tty_hung_up_p(filp))
+ mask |= POLLHUP;
+ if (!tty_is_writelocked(tty) &&
+- n_hdlc->tx_free_buf_list.head)
++ !list_empty(&n_hdlc->tx_free_buf_list.list))
+ mask |= POLLOUT | POLLWRNORM; /* writable */
+ }
+ return mask;
+@@ -853,11 +841,16 @@ static struct n_hdlc *n_hdlc_alloc(void)
+ if (!n_hdlc)
+ return NULL;
+
+- n_hdlc_buf_list_init(&n_hdlc->rx_free_buf_list);
+- n_hdlc_buf_list_init(&n_hdlc->tx_free_buf_list);
+- n_hdlc_buf_list_init(&n_hdlc->rx_buf_list);
+- n_hdlc_buf_list_init(&n_hdlc->tx_buf_list);
+-
++ spin_lock_init(&n_hdlc->rx_free_buf_list.spinlock);
++ spin_lock_init(&n_hdlc->tx_free_buf_list.spinlock);
++ spin_lock_init(&n_hdlc->rx_buf_list.spinlock);
++ spin_lock_init(&n_hdlc->tx_buf_list.spinlock);
++
++ INIT_LIST_HEAD(&n_hdlc->rx_free_buf_list.list);
++ INIT_LIST_HEAD(&n_hdlc->tx_free_buf_list.list);
++ INIT_LIST_HEAD(&n_hdlc->rx_buf_list.list);
++ INIT_LIST_HEAD(&n_hdlc->tx_buf_list.list);
++
+ /* allocate free rx buffer list */
+ for(i=0;i<DEFAULT_RX_BUF_COUNT;i++) {
+ buf = kmalloc(N_HDLC_BUF_SIZE, GFP_KERNEL);
+@@ -885,63 +878,65 @@ static struct n_hdlc *n_hdlc_alloc(void)
+ } /* end of n_hdlc_alloc() */
+
+ /**
+- * n_hdlc_buf_list_init - initialize specified HDLC buffer list
+- * @list - pointer to buffer list
++ * n_hdlc_buf_return - put the HDLC buffer after the head of the specified list
++ * @buf_list - pointer to the buffer list
++ * @buf - pointer to the buffer
+ */
+-static void n_hdlc_buf_list_init(struct n_hdlc_buf_list *list)
++static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list,
++ struct n_hdlc_buf *buf)
+ {
+- memset(list, 0, sizeof(*list));
+- spin_lock_init(&list->spinlock);
+-} /* end of n_hdlc_buf_list_init() */
++ unsigned long flags;
++
++ spin_lock_irqsave(&buf_list->spinlock, flags);
++
++ list_add(&buf->list_item, &buf_list->list);
++ buf_list->count++;
++
++ spin_unlock_irqrestore(&buf_list->spinlock, flags);
++}
+
+ /**
+ * n_hdlc_buf_put - add specified HDLC buffer to tail of specified list
+- * @list - pointer to buffer list
++ * @buf_list - pointer to buffer list
+ * @buf - pointer to buffer
+ */
+-static void n_hdlc_buf_put(struct n_hdlc_buf_list *list,
++static void n_hdlc_buf_put(struct n_hdlc_buf_list *buf_list,
+ struct n_hdlc_buf *buf)
+ {
+ unsigned long flags;
+- spin_lock_irqsave(&list->spinlock,flags);
+-
+- buf->link=NULL;
+- if (list->tail)
+- list->tail->link = buf;
+- else
+- list->head = buf;
+- list->tail = buf;
+- (list->count)++;
+-
+- spin_unlock_irqrestore(&list->spinlock,flags);
+-
++
++ spin_lock_irqsave(&buf_list->spinlock, flags);
++
++ list_add_tail(&buf->list_item, &buf_list->list);
++ buf_list->count++;
++
++ spin_unlock_irqrestore(&buf_list->spinlock, flags);
+ } /* end of n_hdlc_buf_put() */
+
+ /**
+ * n_hdlc_buf_get - remove and return an HDLC buffer from list
+- * @list - pointer to HDLC buffer list
++ * @buf_list - pointer to HDLC buffer list
+ *
+ * Remove and return an HDLC buffer from the head of the specified HDLC buffer
+ * list.
+ * Returns a pointer to HDLC buffer if available, otherwise %NULL.
+ */
+-static struct n_hdlc_buf* n_hdlc_buf_get(struct n_hdlc_buf_list *list)
++static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *buf_list)
+ {
+ unsigned long flags;
+ struct n_hdlc_buf *buf;
+- spin_lock_irqsave(&list->spinlock,flags);
+-
+- buf = list->head;
++
++ spin_lock_irqsave(&buf_list->spinlock, flags);
++
++ buf = list_first_entry_or_null(&buf_list->list,
++ struct n_hdlc_buf, list_item);
+ if (buf) {
+- list->head = buf->link;
+- (list->count)--;
++ list_del(&buf->list_item);
++ buf_list->count--;
+ }
+- if (!list->head)
+- list->tail = NULL;
+-
+- spin_unlock_irqrestore(&list->spinlock,flags);
++
++ spin_unlock_irqrestore(&buf_list->spinlock, flags);
+ return buf;
+-
+ } /* end of n_hdlc_buf_get() */
+
+ static char hdlc_banner[] __initdata =
+diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
+index 5815e81b5fc6..a8a6fe6fc924 100644
+--- a/drivers/tty/serial/8250/8250_fintek.c
++++ b/drivers/tty/serial/8250/8250_fintek.c
+@@ -118,7 +118,7 @@ static int fintek_8250_rs485_config(struct uart_port *port,
+
+ if ((!!(rs485->flags & SER_RS485_RTS_ON_SEND)) ==
+ (!!(rs485->flags & SER_RS485_RTS_AFTER_SEND)))
+- rs485->flags &= SER_RS485_ENABLED;
++ rs485->flags &= ~SER_RS485_ENABLED;
+ else
+ config |= RS485_URA;
+
+diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
+index 83a145f61f1f..0a1e9f4d9882 100644
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -58,6 +58,7 @@ struct serial_private {
+ unsigned int nr;
+ void __iomem *remapped_bar[PCI_NUM_BAR_RESOURCES];
+ struct pci_serial_quirk *quirk;
++ const struct pciserial_board *board;
+ int line[0];
+ };
+
+@@ -4155,6 +4156,7 @@ pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board)
+ }
+ }
+ priv->nr = i;
++ priv->board = board;
+ return priv;
+
+ err_deinit:
+@@ -4165,7 +4167,7 @@ err_out:
+ }
+ EXPORT_SYMBOL_GPL(pciserial_init_ports);
+
+-void pciserial_remove_ports(struct serial_private *priv)
++void pciserial_detach_ports(struct serial_private *priv)
+ {
+ struct pci_serial_quirk *quirk;
+ int i;
+@@ -4185,7 +4187,11 @@ void pciserial_remove_ports(struct serial_private *priv)
+ quirk = find_quirk(priv->dev);
+ if (quirk->exit)
+ quirk->exit(priv->dev);
++}
+
++void pciserial_remove_ports(struct serial_private *priv)
++{
++ pciserial_detach_ports(priv);
+ kfree(priv);
+ }
+ EXPORT_SYMBOL_GPL(pciserial_remove_ports);
+@@ -5908,6 +5914,9 @@ static struct pci_device_id serial_pci_tbl[] = {
+ { PCI_DEVICE(0x1601, 0x0800), .driver_data = pbn_b0_4_1250000 },
+ { PCI_DEVICE(0x1601, 0xa801), .driver_data = pbn_b0_4_1250000 },
+
++ /* Amazon PCI serial device */
++ { PCI_DEVICE(0x1d0f, 0x8250), .driver_data = pbn_b0_1_115200 },
++
+ /*
+ * These entries match devices with class COMMUNICATION_SERIAL,
+ * COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL
+@@ -5936,7 +5945,7 @@ static pci_ers_result_t serial8250_io_error_detected(struct pci_dev *dev,
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ if (priv)
+- pciserial_suspend_ports(priv);
++ pciserial_detach_ports(priv);
+
+ pci_disable_device(dev);
+
+@@ -5961,9 +5970,16 @@ static pci_ers_result_t serial8250_io_slot_reset(struct pci_dev *dev)
+ static void serial8250_io_resume(struct pci_dev *dev)
+ {
+ struct serial_private *priv = pci_get_drvdata(dev);
++ struct serial_private *new;
+
+- if (priv)
+- pciserial_resume_ports(priv);
++ if (!priv)
++ return;
++
++ new = pciserial_init_ports(dev, priv->board);
++ if (!IS_ERR(new)) {
++ pci_set_drvdata(dev, new);
++ kfree(priv);
++ }
+ }
+
+ static const struct pci_error_handlers serial8250_err_handler = {
+diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
+index 2f7cfa5c7b8b..529cc86283e7 100644
+--- a/drivers/tty/sysrq.c
++++ b/drivers/tty/sysrq.c
+@@ -237,8 +237,10 @@ static void sysrq_handle_showallcpus(int key)
+ * architecture has no support for it:
+ */
+ if (!trigger_all_cpu_backtrace()) {
+- struct pt_regs *regs = get_irq_regs();
++ struct pt_regs *regs = NULL;
+
++ if (in_irq())
++ regs = get_irq_regs();
+ if (regs) {
+ pr_info("CPU%d:\n", smp_processor_id());
+ show_regs(regs);
+@@ -257,7 +259,10 @@ static struct sysrq_key_op sysrq_showallcpus_op = {
+
+ static void sysrq_handle_showregs(int key)
+ {
+- struct pt_regs *regs = get_irq_regs();
++ struct pt_regs *regs = NULL;
++
++ if (in_irq())
++ regs = get_irq_regs();
+ if (regs)
+ show_regs(regs);
+ perf_event_print_debug();
+diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
+index 0b99f913d7f2..b868e77f3bfb 100644
+--- a/drivers/usb/core/config.c
++++ b/drivers/usb/core/config.c
+@@ -460,6 +460,9 @@ static int usb_parse_configuration(struct usb_device *dev, int cfgidx,
+ unsigned iad_num = 0;
+
+ memcpy(&config->desc, buffer, USB_DT_CONFIG_SIZE);
++ nintf = nintf_orig = config->desc.bNumInterfaces;
++ config->desc.bNumInterfaces = 0; // Adjusted later
++
+ if (config->desc.bDescriptorType != USB_DT_CONFIG ||
+ config->desc.bLength < USB_DT_CONFIG_SIZE ||
+ config->desc.bLength > size) {
+@@ -473,7 +476,6 @@ static int usb_parse_configuration(struct usb_device *dev, int cfgidx,
+ buffer += config->desc.bLength;
+ size -= config->desc.bLength;
+
+- nintf = nintf_orig = config->desc.bNumInterfaces;
+ if (nintf > USB_MAXINTERFACES) {
+ dev_warn(ddev, "config %d has too many interfaces: %d, "
+ "using maximum allowed: %d\n",
+diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
+index 94a15883f8cc..3c31309f06d3 100644
+--- a/drivers/usb/core/devio.c
++++ b/drivers/usb/core/devio.c
+@@ -113,42 +113,38 @@ enum snoop_when {
+ #define USB_DEVICE_DEV MKDEV(USB_DEVICE_MAJOR, 0)
+
+ /* Limit on the total amount of memory we can allocate for transfers */
+-static unsigned usbfs_memory_mb = 16;
++static u32 usbfs_memory_mb = 16;
+ module_param(usbfs_memory_mb, uint, 0644);
+ MODULE_PARM_DESC(usbfs_memory_mb,
+ "maximum MB allowed for usbfs buffers (0 = no limit)");
+
+ /* Hard limit, necessary to avoid arithmetic overflow */
+-#define USBFS_XFER_MAX (UINT_MAX / 2 - 1000000)
++#define USBFS_XFER_MAX (UINT_MAX / 2 - 1000000)
+
+-static atomic_t usbfs_memory_usage; /* Total memory currently allocated */
++static atomic64_t usbfs_memory_usage; /* Total memory currently allocated */
+
+ /* Check whether it's okay to allocate more memory for a transfer */
+-static int usbfs_increase_memory_usage(unsigned amount)
++static int usbfs_increase_memory_usage(u64 amount)
+ {
+- unsigned lim;
++ u64 lim;
+
+- /*
+- * Convert usbfs_memory_mb to bytes, avoiding overflows.
+- * 0 means use the hard limit (effectively unlimited).
+- */
+ lim = ACCESS_ONCE(usbfs_memory_mb);
+- if (lim == 0 || lim > (USBFS_XFER_MAX >> 20))
+- lim = USBFS_XFER_MAX;
+- else
+- lim <<= 20;
++ lim <<= 20;
+
+- atomic_add(amount, &usbfs_memory_usage);
+- if (atomic_read(&usbfs_memory_usage) <= lim)
+- return 0;
+- atomic_sub(amount, &usbfs_memory_usage);
+- return -ENOMEM;
++ atomic64_add(amount, &usbfs_memory_usage);
++
++ if (lim > 0 && atomic64_read(&usbfs_memory_usage) > lim) {
++ atomic64_sub(amount, &usbfs_memory_usage);
++ return -ENOMEM;
++ }
++
++ return 0;
+ }
+
+ /* Memory for a transfer is being deallocated */
+-static void usbfs_decrease_memory_usage(unsigned amount)
++static void usbfs_decrease_memory_usage(u64 amount)
+ {
+- atomic_sub(amount, &usbfs_memory_usage);
++ atomic64_sub(amount, &usbfs_memory_usage);
+ }
+
+ static int connected(struct usb_dev_state *ps)
+@@ -1077,7 +1073,7 @@ static int proc_bulk(struct usb_dev_state *ps, void __user *arg)
+ if (!usb_maxpacket(dev, pipe, !(bulk.ep & USB_DIR_IN)))
+ return -EINVAL;
+ len1 = bulk.len;
+- if (len1 >= USBFS_XFER_MAX)
++ if (len1 >= (INT_MAX - sizeof(struct urb)))
+ return -EINVAL;
+ ret = usbfs_increase_memory_usage(len1 + sizeof(struct urb));
+ if (ret)
+@@ -1294,13 +1290,19 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
+ int number_of_packets = 0;
+ unsigned int stream_id = 0;
+ void *buf;
+-
+- if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP |
+- USBDEVFS_URB_SHORT_NOT_OK |
++ unsigned long mask = USBDEVFS_URB_SHORT_NOT_OK |
+ USBDEVFS_URB_BULK_CONTINUATION |
+ USBDEVFS_URB_NO_FSBR |
+ USBDEVFS_URB_ZERO_PACKET |
+- USBDEVFS_URB_NO_INTERRUPT))
++ USBDEVFS_URB_NO_INTERRUPT;
++ /* USBDEVFS_URB_ISO_ASAP is a special case */
++ if (uurb->type == USBDEVFS_URB_TYPE_ISO)
++ mask |= USBDEVFS_URB_ISO_ASAP;
++
++ if (uurb->flags & ~mask)
++ return -EINVAL;
++
++ if ((unsigned int)uurb->buffer_length >= USBFS_XFER_MAX)
+ return -EINVAL;
+ if (uurb->buffer_length > 0 && !uurb->buffer)
+ return -EINVAL;
+@@ -1420,10 +1422,6 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
+ return -EINVAL;
+ }
+
+- if (uurb->buffer_length >= USBFS_XFER_MAX) {
+- ret = -EINVAL;
+- goto error;
+- }
+ if (uurb->buffer_length > 0 &&
+ !access_ok(is_in ? VERIFY_WRITE : VERIFY_READ,
+ uurb->buffer, uurb->buffer_length)) {
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index 8600144a7aab..1ba74441d7bf 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -4815,6 +4815,15 @@ loop:
+ usb_put_dev(udev);
+ if ((status == -ENOTCONN) || (status == -ENOTSUPP))
+ break;
++
++ /* When halfway through our retry count, power-cycle the port */
++ if (i == (SET_CONFIG_TRIES / 2) - 1) {
++ dev_info(&port_dev->dev, "attempt power cycle\n");
++ usb_hub_set_port_power(hdev, hub, port1, false);
++ msleep(2 * hub_power_on_good_delay(hub));
++ usb_hub_set_port_power(hdev, hub, port1, true);
++ msleep(hub_power_on_good_delay(hub));
++ }
+ }
+ if (hub->hdev->parent ||
+ !hcd->driver->port_handed_over ||
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 37c418e581fb..50010282c010 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -151,6 +151,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* appletouch */
+ { USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME },
+
++ /* Genesys Logic hub, internally used by KY-688 USB 3.1 Type-C Hub */
++ { USB_DEVICE(0x05e3, 0x0612), .driver_info = USB_QUIRK_NO_LPM },
++
+ /* Genesys Logic hub, internally used by Moshi USB to Ethernet Adapter */
+ { USB_DEVICE(0x05e3, 0x0616), .driver_info = USB_QUIRK_NO_LPM },
+
+diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
+index 0495c94a23d7..23330697aff2 100644
+--- a/drivers/usb/gadget/configfs.c
++++ b/drivers/usb/gadget/configfs.c
+@@ -266,6 +266,7 @@ static ssize_t gadget_dev_desc_UDC_store(struct gadget_info *gi,
+ ret = unregister_gadget(gi);
+ if (ret)
+ goto err;
++ kfree(name);
+ } else {
+ if (gi->udc_name) {
+ ret = -EBUSY;
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 804b209f4c08..2c25a5dec442 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -791,7 +791,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
+ }
+
+ if (io_data->aio) {
+- req = usb_ep_alloc_request(ep->ep, GFP_KERNEL);
++ req = usb_ep_alloc_request(ep->ep, GFP_ATOMIC);
+ if (unlikely(!req))
+ goto error_lock;
+
+diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
+index 63d71400dcaf..ada2a4f5a774 100644
+--- a/drivers/usb/gadget/legacy/inode.c
++++ b/drivers/usb/gadget/legacy/inode.c
+@@ -1834,8 +1834,10 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
+
+ spin_lock_irq (&dev->lock);
+ value = -EINVAL;
+- if (dev->buf)
++ if (dev->buf) {
++ kfree(kbuf);
+ goto fail;
++ }
+ dev->buf = kbuf;
+
+ /* full or low speed config */
+diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
+index 524cbf26d992..e37395ef5d49 100644
+--- a/drivers/usb/host/ehci-dbg.c
++++ b/drivers/usb/host/ehci-dbg.c
+@@ -850,7 +850,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
+ default: /* unknown */
+ break;
+ }
+- temp = (cap >> 8) & 0xff;
++ offset = (cap >> 8) & 0xff;
+ }
+ }
+ #endif
+diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
+index 68e37424a26d..3d2b4d1482df 100644
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -981,6 +981,12 @@ void xhci_free_virt_devices_depth_first(struct xhci_hcd *xhci, int slot_id)
+ if (!vdev)
+ return;
+
++ if (vdev->real_port == 0 ||
++ vdev->real_port > HCS_MAX_PORTS(xhci->hcs_params1)) {
++ xhci_dbg(xhci, "Bad vdev->real_port.\n");
++ goto out;
++ }
++
+ tt_list_head = &(xhci->rh_bw[vdev->real_port - 1].tts);
+ list_for_each_entry_safe(tt_info, next, tt_list_head, tt_list) {
+ /* is this a hub device that added a tt_info to the tts list */
+@@ -994,6 +1000,7 @@ void xhci_free_virt_devices_depth_first(struct xhci_hcd *xhci, int slot_id)
+ }
+ }
+ }
++out:
+ /* we are now at a leaf device */
+ xhci_free_virt_device(xhci, slot_id);
+ }
+@@ -1010,10 +1017,9 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
+ return 0;
+ }
+
+- xhci->devs[slot_id] = kzalloc(sizeof(*xhci->devs[slot_id]), flags);
+- if (!xhci->devs[slot_id])
++ dev = kzalloc(sizeof(*dev), flags);
++ if (!dev)
+ return 0;
+- dev = xhci->devs[slot_id];
+
+ /* Allocate the (output) device context that will be used in the HC. */
+ dev->out_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_DEVICE, flags);
+@@ -1061,9 +1067,17 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
+ &xhci->dcbaa->dev_context_ptrs[slot_id],
+ le64_to_cpu(xhci->dcbaa->dev_context_ptrs[slot_id]));
+
++ xhci->devs[slot_id] = dev;
++
+ return 1;
+ fail:
+- xhci_free_virt_device(xhci, slot_id);
++
++ if (dev->in_ctx)
++ xhci_free_container_ctx(xhci, dev->in_ctx);
++ if (dev->out_ctx)
++ xhci_free_container_ctx(xhci, dev->out_ctx);
++ kfree(dev);
++
+ return 0;
+ }
+
+diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
+index 9a9c82a4d35d..d6a8e325950c 100644
+--- a/drivers/usb/musb/da8xx.c
++++ b/drivers/usb/musb/da8xx.c
+@@ -350,7 +350,15 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci)
+ musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
+ portstate(musb->port1_status |= USB_PORT_STAT_POWER);
+ del_timer(&otg_workaround);
+- } else {
++ } else if (!(musb->int_usb & MUSB_INTR_BABBLE)){
++ /*
++ * When babble condition happens, drvvbus interrupt
++ * is also generated. Ignore this drvvbus interrupt
++ * and let babble interrupt handler recovers the
++ * controller; otherwise, the host-mode flag is lost
++ * due to the MUSB_DEV_MODE() call below and babble
++ * recovery logic will not called.
++ */
+ musb->is_active = 0;
+ MUSB_DEV_MODE(musb);
+ otg->default_a = 0;
+diff --git a/drivers/usb/phy/phy-isp1301.c b/drivers/usb/phy/phy-isp1301.c
+index 8a55b37d1a02..d2ed59a38354 100644
+--- a/drivers/usb/phy/phy-isp1301.c
++++ b/drivers/usb/phy/phy-isp1301.c
+@@ -32,6 +32,12 @@ static const struct i2c_device_id isp1301_id[] = {
+ { }
+ };
+
++static const struct of_device_id isp1301_of_match[] = {
++ {.compatible = "nxp,isp1301" },
++ { },
++};
++MODULE_DEVICE_TABLE(of, isp1301_of_match);
++
+ static struct i2c_client *isp1301_i2c_client;
+
+ static int __isp1301_write(struct isp1301 *isp, u8 reg, u8 value, u8 clear)
+@@ -129,6 +135,7 @@ static int isp1301_remove(struct i2c_client *client)
+ static struct i2c_driver isp1301_driver = {
+ .driver = {
+ .name = DRV_NAME,
++ .of_match_table = of_match_ptr(isp1301_of_match),
+ },
+ .probe = isp1301_probe,
+ .remove = isp1301_remove,
+diff --git a/drivers/usb/storage/uas-detect.h b/drivers/usb/storage/uas-detect.h
+index a155cd02bce2..ecc83c405a8b 100644
+--- a/drivers/usb/storage/uas-detect.h
++++ b/drivers/usb/storage/uas-detect.h
+@@ -111,6 +111,10 @@ static int uas_use_uas_driver(struct usb_interface *intf,
+ }
+ }
+
++ /* All Seagate disk enclosures have broken ATA pass-through support */
++ if (le16_to_cpu(udev->descriptor.idVendor) == 0x0bc2)
++ flags |= US_FL_NO_ATA_1X;
++
+ usb_stor_adjust_quirks(udev, &flags);
+
+ if (flags & US_FL_IGNORE_UAS) {
+diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
+index 8e80da125b25..cd2e880979f2 100644
+--- a/drivers/usb/storage/unusual_devs.h
++++ b/drivers/usb/storage/unusual_devs.h
+@@ -2138,6 +2138,13 @@ UNUSUAL_DEV(0x152d, 0x9561, 0x0000, 0x9999,
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_NO_REPORT_OPCODES),
+
++/* Reported by David Kozub <zub@linux.fjfi.cvut.cz> */
++UNUSUAL_DEV(0x152d, 0x0578, 0x0000, 0x9999,
++ "JMicron",
++ "JMS567",
++ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
++ US_FL_BROKEN_FUA),
++
+ /*
+ * Patch by Constantin Baranov <const@tltsu.ru>
+ * Report by Andreas Koenecke.
+diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
+index a37ed1e59e99..2f80163ffb94 100644
+--- a/drivers/usb/storage/unusual_uas.h
++++ b/drivers/usb/storage/unusual_uas.h
+@@ -141,6 +141,13 @@ UNUSUAL_DEV(0x152d, 0x0567, 0x0000, 0x9999,
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_BROKEN_FUA | US_FL_NO_REPORT_OPCODES),
+
++/* Reported-by: David Kozub <zub@linux.fjfi.cvut.cz> */
++UNUSUAL_DEV(0x152d, 0x0578, 0x0000, 0x9999,
++ "JMicron",
++ "JMS567",
++ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
++ US_FL_BROKEN_FUA),
++
+ /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
+ UNUSUAL_DEV(0x2109, 0x0711, 0x0000, 0x9999,
+ "VIA",
+diff --git a/drivers/usb/usbip/stub_tx.c b/drivers/usb/usbip/stub_tx.c
+index 021003c4de53..af858d52608a 100644
+--- a/drivers/usb/usbip/stub_tx.c
++++ b/drivers/usb/usbip/stub_tx.c
+@@ -178,6 +178,13 @@ static int stub_send_ret_submit(struct stub_device *sdev)
+ memset(&pdu_header, 0, sizeof(pdu_header));
+ memset(&msg, 0, sizeof(msg));
+
++ if (urb->actual_length > 0 && !urb->transfer_buffer) {
++ dev_err(&sdev->udev->dev,
++ "urb: actual_length %d transfer_buffer null\n",
++ urb->actual_length);
++ return -1;
++ }
++
+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
+ iovnum = 2 + urb->number_of_packets;
+ else
+diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
+index b97210671a81..106348c6d993 100644
+--- a/drivers/video/console/fbcon.c
++++ b/drivers/video/console/fbcon.c
+@@ -1165,6 +1165,8 @@ static void fbcon_free_font(struct display *p, bool freefont)
+ p->userfont = 0;
+ }
+
++static void set_vc_hi_font(struct vc_data *vc, bool set);
++
+ static void fbcon_deinit(struct vc_data *vc)
+ {
+ struct display *p = &fb_display[vc->vc_num];
+@@ -1200,6 +1202,9 @@ finished:
+ if (free_font)
+ vc->vc_font.data = NULL;
+
++ if (vc->vc_hi_font_mask)
++ set_vc_hi_font(vc, false);
++
+ if (!con_is_bound(&fb_con))
+ fbcon_exit();
+
+@@ -2434,32 +2439,10 @@ static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
+ return 0;
+ }
+
+-static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
+- const u8 * data, int userfont)
++/* set/clear vc_hi_font_mask and update vc attrs accordingly */
++static void set_vc_hi_font(struct vc_data *vc, bool set)
+ {
+- struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
+- struct fbcon_ops *ops = info->fbcon_par;
+- struct display *p = &fb_display[vc->vc_num];
+- int resize;
+- int cnt;
+- char *old_data = NULL;
+-
+- if (CON_IS_VISIBLE(vc) && softback_lines)
+- fbcon_set_origin(vc);
+-
+- resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
+- if (p->userfont)
+- old_data = vc->vc_font.data;
+- if (userfont)
+- cnt = FNTCHARCNT(data);
+- else
+- cnt = 256;
+- vc->vc_font.data = (void *)(p->fontdata = data);
+- if ((p->userfont = userfont))
+- REFCOUNT(data)++;
+- vc->vc_font.width = w;
+- vc->vc_font.height = h;
+- if (vc->vc_hi_font_mask && cnt == 256) {
++ if (!set) {
+ vc->vc_hi_font_mask = 0;
+ if (vc->vc_can_do_color) {
+ vc->vc_complement_mask >>= 1;
+@@ -2482,7 +2465,7 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
+ ((c & 0xfe00) >> 1) | (c & 0xff);
+ vc->vc_attr >>= 1;
+ }
+- } else if (!vc->vc_hi_font_mask && cnt == 512) {
++ } else {
+ vc->vc_hi_font_mask = 0x100;
+ if (vc->vc_can_do_color) {
+ vc->vc_complement_mask <<= 1;
+@@ -2514,8 +2497,38 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
+ } else
+ vc->vc_video_erase_char = c & ~0x100;
+ }
+-
+ }
++}
++
++static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
++ const u8 * data, int userfont)
++{
++ struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
++ struct fbcon_ops *ops = info->fbcon_par;
++ struct display *p = &fb_display[vc->vc_num];
++ int resize;
++ int cnt;
++ char *old_data = NULL;
++
++ if (CON_IS_VISIBLE(vc) && softback_lines)
++ fbcon_set_origin(vc);
++
++ resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
++ if (p->userfont)
++ old_data = vc->vc_font.data;
++ if (userfont)
++ cnt = FNTCHARCNT(data);
++ else
++ cnt = 256;
++ vc->vc_font.data = (void *)(p->fontdata = data);
++ if ((p->userfont = userfont))
++ REFCOUNT(data)++;
++ vc->vc_font.width = w;
++ vc->vc_font.height = h;
++ if (vc->vc_hi_font_mask && cnt == 256)
++ set_vc_hi_font(vc, false);
++ else if (!vc->vc_hi_font_mask && cnt == 512)
++ set_vc_hi_font(vc, true);
+
+ if (resize) {
+ int cols, rows;
+diff --git a/drivers/video/fbdev/au1200fb.c b/drivers/video/fbdev/au1200fb.c
+index f9507b1894df..789d3f16ff9f 100644
+--- a/drivers/video/fbdev/au1200fb.c
++++ b/drivers/video/fbdev/au1200fb.c
+@@ -1680,8 +1680,10 @@ static int au1200fb_drv_probe(struct platform_device *dev)
+
+ fbi = framebuffer_alloc(sizeof(struct au1200fb_device),
+ &dev->dev);
+- if (!fbi)
++ if (!fbi) {
++ ret = -ENOMEM;
+ goto failed;
++ }
+
+ _au1200fb_infos[plane] = fbi;
+ fbdev = fbi->par;
+@@ -1699,7 +1701,8 @@ static int au1200fb_drv_probe(struct platform_device *dev)
+ if (!fbdev->fb_mem) {
+ print_err("fail to allocate frambuffer (size: %dK))",
+ fbdev->fb_len / 1024);
+- return -ENOMEM;
++ ret = -ENOMEM;
++ goto failed;
+ }
+
+ /*
+diff --git a/drivers/video/fbdev/controlfb.h b/drivers/video/fbdev/controlfb.h
+index 6026c60fc100..261522fabdac 100644
+--- a/drivers/video/fbdev/controlfb.h
++++ b/drivers/video/fbdev/controlfb.h
+@@ -141,5 +141,7 @@ static struct max_cmodes control_mac_modes[] = {
+ {{ 1, 2}}, /* 1152x870, 75Hz */
+ {{ 0, 1}}, /* 1280x960, 75Hz */
+ {{ 0, 1}}, /* 1280x1024, 75Hz */
++ {{ 1, 2}}, /* 1152x768, 60Hz */
++ {{ 0, 1}}, /* 1600x1024, 60Hz */
+ };
+
+diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
+index ff2b8731a2dc..d2a985e59fcd 100644
+--- a/drivers/video/fbdev/udlfb.c
++++ b/drivers/video/fbdev/udlfb.c
+@@ -769,11 +769,11 @@ static int dlfb_get_edid(struct dlfb_data *dev, char *edid, int len)
+
+ for (i = 0; i < len; i++) {
+ ret = usb_control_msg(dev->udev,
+- usb_rcvctrlpipe(dev->udev, 0), (0x02),
+- (0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
+- HZ);
+- if (ret < 1) {
+- pr_err("Read EDID byte %d failed err %x\n", i, ret);
++ usb_rcvctrlpipe(dev->udev, 0), 0x02,
++ (0x80 | (0x02 << 5)), i << 8, 0xA1,
++ rbuf, 2, USB_CTRL_GET_TIMEOUT);
++ if (ret < 2) {
++ pr_err("Read EDID byte %d failed: %d\n", i, ret);
+ i--;
+ break;
+ }
+diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
+index b1877d73fa56..42a51c872754 100644
+--- a/drivers/virtio/virtio.c
++++ b/drivers/virtio/virtio.c
+@@ -323,6 +323,8 @@ int register_virtio_device(struct virtio_device *dev)
+ /* device_register() causes the bus infrastructure to look for a
+ * matching driver. */
+ err = device_register(&dev->dev);
++ if (err)
++ ida_simple_remove(&virtio_index_ida, dev->index);
+ out:
+ if (err)
+ add_status(dev, VIRTIO_CONFIG_S_FAILED);
+diff --git a/fs/afs/callback.c b/fs/afs/callback.c
+index 7ef637d7f3a5..7d54efd73519 100644
+--- a/fs/afs/callback.c
++++ b/fs/afs/callback.c
+@@ -362,7 +362,7 @@ static void afs_callback_updater(struct work_struct *work)
+ {
+ struct afs_server *server;
+ struct afs_vnode *vnode, *xvnode;
+- time_t now;
++ time64_t now;
+ long timeout;
+ int ret;
+
+@@ -370,7 +370,7 @@ static void afs_callback_updater(struct work_struct *work)
+
+ _enter("");
+
+- now = get_seconds();
++ now = ktime_get_real_seconds();
+
+ /* find the first vnode to update */
+ spin_lock(&server->cb_lock);
+@@ -424,7 +424,8 @@ static void afs_callback_updater(struct work_struct *work)
+
+ /* and then reschedule */
+ _debug("reschedule");
+- vnode->update_at = get_seconds() + afs_vnode_update_timeout;
++ vnode->update_at = ktime_get_real_seconds() +
++ afs_vnode_update_timeout;
+
+ spin_lock(&server->cb_lock);
+
+diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c
+index 4b0eff6da674..83a8a33a0d73 100644
+--- a/fs/afs/cmservice.c
++++ b/fs/afs/cmservice.c
+@@ -115,6 +115,9 @@ bool afs_cm_incoming_call(struct afs_call *call)
+ case CBProbe:
+ call->type = &afs_SRXCBProbe;
+ return true;
++ case CBProbeUuid:
++ call->type = &afs_SRXCBProbeUuid;
++ return true;
+ case CBTellMeAboutYourself:
+ call->type = &afs_SRXCBTellMeAboutYourself;
+ return true;
+diff --git a/fs/afs/file.c b/fs/afs/file.c
+index 999bc3caec92..cf8a07e282a6 100644
+--- a/fs/afs/file.c
++++ b/fs/afs/file.c
+@@ -29,6 +29,7 @@ static int afs_readpages(struct file *filp, struct address_space *mapping,
+
+ const struct file_operations afs_file_operations = {
+ .open = afs_open,
++ .flush = afs_flush,
+ .release = afs_release,
+ .llseek = generic_file_llseek,
+ .read_iter = generic_file_read_iter,
+diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
+index c2e930ec2888..10ce44214005 100644
+--- a/fs/afs/fsclient.c
++++ b/fs/afs/fsclient.c
+@@ -105,7 +105,7 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
+ vnode->vfs_inode.i_mode = mode;
+ }
+
+- vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server;
++ vnode->vfs_inode.i_ctime.tv_sec = status->mtime_client;
+ vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime;
+ vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime;
+ vnode->vfs_inode.i_version = data_version;
+@@ -139,7 +139,7 @@ static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode)
+ vnode->cb_version = ntohl(*bp++);
+ vnode->cb_expiry = ntohl(*bp++);
+ vnode->cb_type = ntohl(*bp++);
+- vnode->cb_expires = vnode->cb_expiry + get_seconds();
++ vnode->cb_expires = vnode->cb_expiry + ktime_get_real_seconds();
+ *_bp = bp;
+ }
+
+@@ -703,8 +703,8 @@ int afs_fs_create(struct afs_server *server,
+ memset(bp, 0, padsz);
+ bp = (void *) bp + padsz;
+ }
+- *bp++ = htonl(AFS_SET_MODE);
+- *bp++ = 0; /* mtime */
++ *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
++ *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = htonl(mode & S_IALLUGO); /* unix mode */
+@@ -981,8 +981,8 @@ int afs_fs_symlink(struct afs_server *server,
+ memset(bp, 0, c_padsz);
+ bp = (void *) bp + c_padsz;
+ }
+- *bp++ = htonl(AFS_SET_MODE);
+- *bp++ = 0; /* mtime */
++ *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
++ *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = htonl(S_IRWXUGO); /* unix mode */
+@@ -1192,8 +1192,8 @@ static int afs_fs_store_data64(struct afs_server *server,
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+
+- *bp++ = 0; /* mask */
+- *bp++ = 0; /* mtime */
++ *bp++ = htonl(AFS_SET_MTIME); /* mask */
++ *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = 0; /* unix mode */
+@@ -1225,7 +1225,7 @@ int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb,
+ _enter(",%x,{%x:%u},,",
+ key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode);
+
+- size = to - offset;
++ size = (loff_t)to - (loff_t)offset;
+ if (first != last)
+ size += (loff_t)(last - first) << PAGE_SHIFT;
+ pos = (loff_t)first << PAGE_SHIFT;
+@@ -1269,8 +1269,8 @@ int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb,
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+
+- *bp++ = 0; /* mask */
+- *bp++ = 0; /* mtime */
++ *bp++ = htonl(AFS_SET_MTIME); /* mask */
++ *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = 0; /* unix mode */
+diff --git a/fs/afs/inode.c b/fs/afs/inode.c
+index e06f5a23352a..f8fa92b1d43c 100644
+--- a/fs/afs/inode.c
++++ b/fs/afs/inode.c
+@@ -69,9 +69,9 @@ static int afs_inode_map_status(struct afs_vnode *vnode, struct key *key)
+
+ set_nlink(inode, vnode->status.nlink);
+ inode->i_uid = vnode->status.owner;
+- inode->i_gid = GLOBAL_ROOT_GID;
++ inode->i_gid = vnode->status.group;
+ inode->i_size = vnode->status.size;
+- inode->i_ctime.tv_sec = vnode->status.mtime_server;
++ inode->i_ctime.tv_sec = vnode->status.mtime_client;
+ inode->i_ctime.tv_nsec = 0;
+ inode->i_atime = inode->i_mtime = inode->i_ctime;
+ inode->i_blocks = 0;
+@@ -244,12 +244,13 @@ struct inode *afs_iget(struct super_block *sb, struct key *key,
+ vnode->cb_version = 0;
+ vnode->cb_expiry = 0;
+ vnode->cb_type = 0;
+- vnode->cb_expires = get_seconds();
++ vnode->cb_expires = ktime_get_real_seconds();
+ } else {
+ vnode->cb_version = cb->version;
+ vnode->cb_expiry = cb->expiry;
+ vnode->cb_type = cb->type;
+- vnode->cb_expires = vnode->cb_expiry + get_seconds();
++ vnode->cb_expires = vnode->cb_expiry +
++ ktime_get_real_seconds();
+ }
+ }
+
+@@ -322,7 +323,7 @@ int afs_validate(struct afs_vnode *vnode, struct key *key)
+ !test_bit(AFS_VNODE_CB_BROKEN, &vnode->flags) &&
+ !test_bit(AFS_VNODE_MODIFIED, &vnode->flags) &&
+ !test_bit(AFS_VNODE_ZAP_DATA, &vnode->flags)) {
+- if (vnode->cb_expires < get_seconds() + 10) {
++ if (vnode->cb_expires < ktime_get_real_seconds() + 10) {
+ _debug("callback expired");
+ set_bit(AFS_VNODE_CB_BROKEN, &vnode->flags);
+ } else {
+diff --git a/fs/afs/internal.h b/fs/afs/internal.h
+index 71d5982312f3..1330b2a695ff 100644
+--- a/fs/afs/internal.h
++++ b/fs/afs/internal.h
+@@ -11,6 +11,7 @@
+
+ #include <linux/compiler.h>
+ #include <linux/kernel.h>
++#include <linux/ktime.h>
+ #include <linux/fs.h>
+ #include <linux/pagemap.h>
+ #include <linux/skbuff.h>
+@@ -247,7 +248,7 @@ struct afs_cache_vhash {
+ */
+ struct afs_vlocation {
+ atomic_t usage;
+- time_t time_of_death; /* time at which put reduced usage to 0 */
++ time64_t time_of_death; /* time at which put reduced usage to 0 */
+ struct list_head link; /* link in cell volume location list */
+ struct list_head grave; /* link in master graveyard list */
+ struct list_head update; /* link in master update list */
+@@ -258,7 +259,7 @@ struct afs_vlocation {
+ struct afs_cache_vlocation vldb; /* volume information DB record */
+ struct afs_volume *vols[3]; /* volume access record pointer (index by type) */
+ wait_queue_head_t waitq; /* status change waitqueue */
+- time_t update_at; /* time at which record should be updated */
++ time64_t update_at; /* time at which record should be updated */
+ spinlock_t lock; /* access lock */
+ afs_vlocation_state_t state; /* volume location state */
+ unsigned short upd_rej_cnt; /* ENOMEDIUM count during update */
+@@ -271,7 +272,7 @@ struct afs_vlocation {
+ */
+ struct afs_server {
+ atomic_t usage;
+- time_t time_of_death; /* time at which put reduced usage to 0 */
++ time64_t time_of_death; /* time at which put reduced usage to 0 */
+ struct in_addr addr; /* server address */
+ struct afs_cell *cell; /* cell in which server resides */
+ struct list_head link; /* link in cell's server list */
+@@ -374,8 +375,8 @@ struct afs_vnode {
+ struct rb_node server_rb; /* link in server->fs_vnodes */
+ struct rb_node cb_promise; /* link in server->cb_promises */
+ struct work_struct cb_broken_work; /* work to be done on callback break */
+- time_t cb_expires; /* time at which callback expires */
+- time_t cb_expires_at; /* time used to order cb_promise */
++ time64_t cb_expires; /* time at which callback expires */
++ time64_t cb_expires_at; /* time used to order cb_promise */
+ unsigned cb_version; /* callback version */
+ unsigned cb_expiry; /* callback expiry time */
+ afs_callback_type_t cb_type; /* type of callback */
+@@ -749,6 +750,7 @@ extern int afs_writepages(struct address_space *, struct writeback_control *);
+ extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
+ extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *);
+ extern int afs_writeback_all(struct afs_vnode *);
++extern int afs_flush(struct file *, fl_owner_t);
+ extern int afs_fsync(struct file *, loff_t, loff_t, int);
+
+
+diff --git a/fs/afs/security.c b/fs/afs/security.c
+index 8d010422dc89..bfa9d3428383 100644
+--- a/fs/afs/security.c
++++ b/fs/afs/security.c
+@@ -340,17 +340,22 @@ int afs_permission(struct inode *inode, int mask)
+ } else {
+ if (!(access & AFS_ACE_LOOKUP))
+ goto permission_denied;
++ if ((mask & MAY_EXEC) && !(inode->i_mode & S_IXUSR))
++ goto permission_denied;
+ if (mask & (MAY_EXEC | MAY_READ)) {
+ if (!(access & AFS_ACE_READ))
+ goto permission_denied;
++ if (!(inode->i_mode & S_IRUSR))
++ goto permission_denied;
+ } else if (mask & MAY_WRITE) {
+ if (!(access & AFS_ACE_WRITE))
+ goto permission_denied;
++ if (!(inode->i_mode & S_IWUSR))
++ goto permission_denied;
+ }
+ }
+
+ key_put(key);
+- ret = generic_permission(inode, mask);
+ _leave(" = %d", ret);
+ return ret;
+
+diff --git a/fs/afs/server.c b/fs/afs/server.c
+index f342acf3547d..3bc1a46f0bd6 100644
+--- a/fs/afs/server.c
++++ b/fs/afs/server.c
+@@ -237,7 +237,7 @@ void afs_put_server(struct afs_server *server)
+ spin_lock(&afs_server_graveyard_lock);
+ if (atomic_read(&server->usage) == 0) {
+ list_move_tail(&server->grave, &afs_server_graveyard);
+- server->time_of_death = get_seconds();
++ server->time_of_death = ktime_get_real_seconds();
+ queue_delayed_work(afs_wq, &afs_server_reaper,
+ afs_server_timeout * HZ);
+ }
+@@ -272,9 +272,9 @@ static void afs_reap_server(struct work_struct *work)
+ LIST_HEAD(corpses);
+ struct afs_server *server;
+ unsigned long delay, expiry;
+- time_t now;
++ time64_t now;
+
+- now = get_seconds();
++ now = ktime_get_real_seconds();
+ spin_lock(&afs_server_graveyard_lock);
+
+ while (!list_empty(&afs_server_graveyard)) {
+diff --git a/fs/afs/vlocation.c b/fs/afs/vlocation.c
+index 52976785a32c..ee9015c0db5a 100644
+--- a/fs/afs/vlocation.c
++++ b/fs/afs/vlocation.c
+@@ -340,7 +340,8 @@ static void afs_vlocation_queue_for_updates(struct afs_vlocation *vl)
+ struct afs_vlocation *xvl;
+
+ /* wait at least 10 minutes before updating... */
+- vl->update_at = get_seconds() + afs_vlocation_update_timeout;
++ vl->update_at = ktime_get_real_seconds() +
++ afs_vlocation_update_timeout;
+
+ spin_lock(&afs_vlocation_updates_lock);
+
+@@ -506,7 +507,7 @@ void afs_put_vlocation(struct afs_vlocation *vl)
+ if (atomic_read(&vl->usage) == 0) {
+ _debug("buried");
+ list_move_tail(&vl->grave, &afs_vlocation_graveyard);
+- vl->time_of_death = get_seconds();
++ vl->time_of_death = ktime_get_real_seconds();
+ queue_delayed_work(afs_wq, &afs_vlocation_reap,
+ afs_vlocation_timeout * HZ);
+
+@@ -543,11 +544,11 @@ static void afs_vlocation_reaper(struct work_struct *work)
+ LIST_HEAD(corpses);
+ struct afs_vlocation *vl;
+ unsigned long delay, expiry;
+- time_t now;
++ time64_t now;
+
+ _enter("");
+
+- now = get_seconds();
++ now = ktime_get_real_seconds();
+ spin_lock(&afs_vlocation_graveyard_lock);
+
+ while (!list_empty(&afs_vlocation_graveyard)) {
+@@ -622,13 +623,13 @@ static void afs_vlocation_updater(struct work_struct *work)
+ {
+ struct afs_cache_vlocation vldb;
+ struct afs_vlocation *vl, *xvl;
+- time_t now;
++ time64_t now;
+ long timeout;
+ int ret;
+
+ _enter("");
+
+- now = get_seconds();
++ now = ktime_get_real_seconds();
+
+ /* find a record to update */
+ spin_lock(&afs_vlocation_updates_lock);
+@@ -684,7 +685,8 @@ static void afs_vlocation_updater(struct work_struct *work)
+
+ /* and then reschedule */
+ _debug("reschedule");
+- vl->update_at = get_seconds() + afs_vlocation_update_timeout;
++ vl->update_at = ktime_get_real_seconds() +
++ afs_vlocation_update_timeout;
+
+ spin_lock(&afs_vlocation_updates_lock);
+
+diff --git a/fs/afs/write.c b/fs/afs/write.c
+index 0714abcd7f32..5cfc05ca184c 100644
+--- a/fs/afs/write.c
++++ b/fs/afs/write.c
+@@ -148,12 +148,12 @@ int afs_write_begin(struct file *file, struct address_space *mapping,
+ kfree(candidate);
+ return -ENOMEM;
+ }
+- *pagep = page;
+- /* page won't leak in error case: it eventually gets cleaned off LRU */
+
+ if (!PageUptodate(page) && len != PAGE_CACHE_SIZE) {
+ ret = afs_fill_page(vnode, key, index << PAGE_CACHE_SHIFT, page);
+ if (ret < 0) {
++ unlock_page(page);
++ put_page(page);
+ kfree(candidate);
+ _leave(" = %d [prep]", ret);
+ return ret;
+@@ -161,6 +161,9 @@ int afs_write_begin(struct file *file, struct address_space *mapping,
+ SetPageUptodate(page);
+ }
+
++ /* page won't leak in error case: it eventually gets cleaned off LRU */
++ *pagep = page;
++
+ try_again:
+ spin_lock(&vnode->writeback_lock);
+
+@@ -296,10 +299,14 @@ static void afs_kill_pages(struct afs_vnode *vnode, bool error,
+ ASSERTCMP(pv.nr, ==, count);
+
+ for (loop = 0; loop < count; loop++) {
+- ClearPageUptodate(pv.pages[loop]);
++ struct page *page = pv.pages[loop];
++ ClearPageUptodate(page);
+ if (error)
+- SetPageError(pv.pages[loop]);
+- end_page_writeback(pv.pages[loop]);
++ SetPageError(page);
++ if (PageWriteback(page))
++ end_page_writeback(page);
++ if (page->index >= first)
++ first = page->index + 1;
+ }
+
+ __pagevec_release(&pv);
+@@ -503,6 +510,7 @@ static int afs_writepages_region(struct address_space *mapping,
+
+ if (PageWriteback(page) || !PageDirty(page)) {
+ unlock_page(page);
++ put_page(page);
+ continue;
+ }
+
+@@ -739,6 +747,20 @@ out:
+ return ret;
+ }
+
++/*
++ * Flush out all outstanding writes on a file opened for writing when it is
++ * closed.
++ */
++int afs_flush(struct file *file, fl_owner_t id)
++{
++ _enter("");
++
++ if ((file->f_mode & FMODE_WRITE) == 0)
++ return 0;
++
++ return vfs_fsync(file, 0);
++}
++
+ /*
+ * notification that a previously read-only page is about to become writable
+ * - if it returns an error, the caller will deliver a bus error signal
+diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
+index fe6e7050fe50..98198c57370b 100644
+--- a/fs/autofs4/waitq.c
++++ b/fs/autofs4/waitq.c
+@@ -174,7 +174,6 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
+
+ mutex_unlock(&sbi->wq_mutex);
+
+- if (autofs4_write(sbi, pipe, &pkt, pktsz))
+ switch (ret = autofs4_write(sbi, pipe, &pkt, pktsz)) {
+ case 0:
+ break;
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index db6115486166..d14af5bd13d6 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -6667,6 +6667,20 @@ static noinline int uncompress_inline(struct btrfs_path *path,
+ max_size = min_t(unsigned long, PAGE_CACHE_SIZE, max_size);
+ ret = btrfs_decompress(compress_type, tmp, page,
+ extent_offset, inline_size, max_size);
++
++ /*
++ * decompression code contains a memset to fill in any space between the end
++ * of the uncompressed data and the end of max_size in case the decompressed
++ * data ends up shorter than ram_bytes. That doesn't cover the hole between
++ * the end of an inline extent and the beginning of the next block, so we
++ * cover that region here.
++ */
++
++ if (max_size + pg_offset < PAGE_SIZE) {
++ char *map = kmap(page);
++ memset(map + pg_offset + max_size, 0, PAGE_SIZE - max_size - pg_offset);
++ kunmap(page);
++ }
+ kfree(tmp);
+ return ret;
+ }
+diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
+index 447d64e47c4c..dbc793e31f35 100644
+--- a/fs/ext4/extents.c
++++ b/fs/ext4/extents.c
+@@ -4723,6 +4723,7 @@ retry:
+ EXT4_INODE_EOFBLOCKS);
+ }
+ ext4_mark_inode_dirty(handle, inode);
++ ext4_update_inode_fsync_trans(handle, inode, 1);
+ ret2 = ext4_journal_stop(handle);
+ if (ret2)
+ break;
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index 443ff49dc36f..c1feaf011515 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -3531,6 +3531,10 @@ static int ext4_block_truncate_page(handle_t *handle,
+ unsigned blocksize;
+ struct inode *inode = mapping->host;
+
++ /* If we are processing an encrypted inode during orphan list handling */
++ if (ext4_encrypted_inode(inode) && !ext4_has_encryption_key(inode))
++ return 0;
++
+ blocksize = inode->i_sb->s_blocksize;
+ length = blocksize - (offset & (blocksize - 1));
+
+diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
+index 03482c01fb3e..aa33db84ccba 100644
+--- a/fs/ext4/namei.c
++++ b/fs/ext4/namei.c
+@@ -1412,6 +1412,10 @@ static struct buffer_head * ext4_find_entry (struct inode *dir,
+ "falling back\n"));
+ }
+ nblocks = dir->i_size >> EXT4_BLOCK_SIZE_BITS(sb);
++ if (!nblocks) {
++ ret = NULL;
++ goto cleanup_and_exit;
++ }
+ start = EXT4_I(dir)->i_dir_start_lookup;
+ if (start >= nblocks)
+ start = 0;
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index 807b1df8e134..b29a7ef4953e 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -774,6 +774,7 @@ static void ext4_put_super(struct super_block *sb)
+ {
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_super_block *es = sbi->s_es;
++ int aborted = 0;
+ int i, err;
+
+ ext4_unregister_li_request(sb);
+@@ -783,9 +784,10 @@ static void ext4_put_super(struct super_block *sb)
+ destroy_workqueue(sbi->rsv_conversion_wq);
+
+ if (sbi->s_journal) {
++ aborted = is_journal_aborted(sbi->s_journal);
+ err = jbd2_journal_destroy(sbi->s_journal);
+ sbi->s_journal = NULL;
+- if (err < 0)
++ if ((err < 0) && !aborted)
+ ext4_abort(sb, "Couldn't clean up the journal");
+ }
+
+@@ -796,7 +798,7 @@ static void ext4_put_super(struct super_block *sb)
+ ext4_ext_release(sb);
+ ext4_xattr_put_super(sb);
+
+- if (!(sb->s_flags & MS_RDONLY)) {
++ if (!(sb->s_flags & MS_RDONLY) && !aborted) {
+ EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ es->s_state = cpu_to_le16(sbi->s_mount_state);
+ }
+diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
+index 31892871ea87..2f45f0ce5d66 100644
+--- a/fs/gfs2/file.c
++++ b/fs/gfs2/file.c
+@@ -255,7 +255,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
+ goto out;
+ }
+ if ((flags ^ new_flags) & GFS2_DIF_JDATA) {
+- if (flags & GFS2_DIF_JDATA)
++ if (new_flags & GFS2_DIF_JDATA)
+ gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH);
+ error = filemap_fdatawrite(inode->i_mapping);
+ if (error)
+@@ -263,6 +263,8 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
+ error = filemap_fdatawait(inode->i_mapping);
+ if (error)
+ goto out;
++ if (new_flags & GFS2_DIF_JDATA)
++ gfs2_ordered_del_inode(ip);
+ }
+ error = gfs2_trans_begin(sdp, RES_DINODE, 0);
+ if (error)
+diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
+index 1484ae1907c6..d2cb63259560 100644
+--- a/fs/nfs/dir.c
++++ b/fs/nfs/dir.c
+@@ -2076,7 +2076,7 @@ out:
+ if (new_inode != NULL)
+ nfs_drop_nlink(new_inode);
+ d_move(old_dentry, new_dentry);
+- nfs_set_verifier(new_dentry,
++ nfs_set_verifier(old_dentry,
+ nfs_save_change_attribute(new_dir));
+ } else if (error == -ENOENT)
+ nfs_dentry_handle_enoent(old_dentry);
+diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
+index 5dea913baf46..a03ec3b53d9e 100644
+--- a/fs/nfs/nfs4client.c
++++ b/fs/nfs/nfs4client.c
+@@ -899,9 +899,9 @@ static void nfs4_session_set_rwsize(struct nfs_server *server)
+ server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead;
+ server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead;
+
+- if (server->rsize > server_resp_sz)
++ if (!server->rsize || server->rsize > server_resp_sz)
+ server->rsize = server_resp_sz;
+- if (server->wsize > server_rqst_sz)
++ if (!server->wsize || server->wsize > server_rqst_sz)
+ server->wsize = server_rqst_sz;
+ #endif /* CONFIG_NFS_V4_1 */
+ }
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index 1ce18913762a..0fb0dc739fb2 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -38,7 +38,6 @@
+ #include <linux/mm.h>
+ #include <linux/delay.h>
+ #include <linux/errno.h>
+-#include <linux/file.h>
+ #include <linux/string.h>
+ #include <linux/ratelimit.h>
+ #include <linux/printk.h>
+@@ -5605,7 +5604,6 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
+ p->server = server;
+ atomic_inc(&lsp->ls_count);
+ p->ctx = get_nfs_open_context(ctx);
+- get_file(fl->fl_file);
+ memcpy(&p->fl, fl, sizeof(p->fl));
+ return p;
+ out_free_seqid:
+@@ -5718,7 +5716,6 @@ static void nfs4_lock_release(void *calldata)
+ nfs_free_seqid(data->arg.lock_seqid);
+ nfs4_put_lock_state(data->lsp);
+ put_nfs_open_context(data->ctx);
+- fput(data->fl.fl_file);
+ kfree(data);
+ dprintk("%s: done!\n", __func__);
+ }
+diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
+index 2a9ab265aa32..f8d2902ec118 100644
+--- a/fs/nfs/nfs4state.c
++++ b/fs/nfs/nfs4state.c
+@@ -1678,7 +1678,6 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
+ break;
+ case -NFS4ERR_STALE_CLIENTID:
+ set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
+- nfs4_state_clear_reclaim_reboot(clp);
+ nfs4_state_start_reclaim_reboot(clp);
+ break;
+ case -NFS4ERR_EXPIRED:
+diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
+index c493427e9d69..a208c7ea9680 100644
+--- a/fs/nfsd/nfssvc.c
++++ b/fs/nfsd/nfssvc.c
+@@ -151,7 +151,8 @@ int nfsd_vers(int vers, enum vers_op change)
+
+ int nfsd_minorversion(u32 minorversion, enum vers_op change)
+ {
+- if (minorversion > NFSD_SUPPORTED_MINOR_VERSION)
++ if (minorversion > NFSD_SUPPORTED_MINOR_VERSION &&
++ change != NFSD_AVAIL)
+ return -1;
+ switch(change) {
+ case NFSD_SET:
+@@ -329,23 +330,20 @@ static void nfsd_last_thread(struct svc_serv *serv, struct net *net)
+
+ void nfsd_reset_versions(void)
+ {
+- int found_one = 0;
+ int i;
+
+- for (i = NFSD_MINVERS; i < NFSD_NRVERS; i++) {
+- if (nfsd_program.pg_vers[i])
+- found_one = 1;
+- }
+-
+- if (!found_one) {
+- for (i = NFSD_MINVERS; i < NFSD_NRVERS; i++)
+- nfsd_program.pg_vers[i] = nfsd_version[i];
+-#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
+- for (i = NFSD_ACL_MINVERS; i < NFSD_ACL_NRVERS; i++)
+- nfsd_acl_program.pg_vers[i] =
+- nfsd_acl_version[i];
+-#endif
+- }
++ for (i = 0; i < NFSD_NRVERS; i++)
++ if (nfsd_vers(i, NFSD_TEST))
++ return;
++
++ for (i = 0; i < NFSD_NRVERS; i++)
++ if (i != 4)
++ nfsd_vers(i, NFSD_SET);
++ else {
++ int minor = 0;
++ while (nfsd_minorversion(minor, NFSD_SET) >= 0)
++ minor++;
++ }
+ }
+
+ /*
+diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
+index 92de3747ea8b..5eaee287be23 100644
+--- a/fs/nfsd/vfs.c
++++ b/fs/nfsd/vfs.c
+@@ -369,7 +369,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
+ __be32 err;
+ int host_err;
+ bool get_write_count;
+- int size_change = 0;
++ bool size_change = (iap->ia_valid & ATTR_SIZE);
+
+ if (iap->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_SIZE))
+ accmode |= NFSD_MAY_WRITE|NFSD_MAY_OWNER_OVERRIDE;
+@@ -382,11 +382,11 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
+ /* Get inode */
+ err = fh_verify(rqstp, fhp, ftype, accmode);
+ if (err)
+- goto out;
++ return err;
+ if (get_write_count) {
+ host_err = fh_want_write(fhp);
+ if (host_err)
+- return nfserrno(host_err);
++ goto out;
+ }
+
+ dentry = fhp->fh_dentry;
+@@ -397,20 +397,28 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
+ iap->ia_valid &= ~ATTR_MODE;
+
+ if (!iap->ia_valid)
+- goto out;
++ return 0;
+
+ nfsd_sanitize_attrs(inode, iap);
+
++ if (check_guard && guardtime != inode->i_ctime.tv_sec)
++ return nfserr_notsync;
++
+ /*
+ * The size case is special, it changes the file in addition to the
+- * attributes.
++ * attributes, and file systems don't expect it to be mixed with
++ * "random" attribute changes. We thus split out the size change
++ * into a separate call to ->setattr, and do the rest as a separate
++ * setattr call.
+ */
+- if (iap->ia_valid & ATTR_SIZE) {
++ if (size_change) {
+ err = nfsd_get_write_access(rqstp, fhp, iap);
+ if (err)
+- goto out;
+- size_change = 1;
++ return err;
++ }
+
++ fh_lock(fhp);
++ if (size_change) {
+ /*
+ * RFC5661, Section 18.30.4:
+ * Changing the size of a file with SETATTR indirectly
+@@ -418,29 +426,36 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
+ *
+ * (and similar for the older RFCs)
+ */
+- if (iap->ia_size != i_size_read(inode))
+- iap->ia_valid |= ATTR_MTIME;
+- }
++ struct iattr size_attr = {
++ .ia_valid = ATTR_SIZE | ATTR_CTIME | ATTR_MTIME,
++ .ia_size = iap->ia_size,
++ };
+
+- iap->ia_valid |= ATTR_CTIME;
++ host_err = notify_change(dentry, &size_attr, NULL);
++ if (host_err)
++ goto out_unlock;
++ iap->ia_valid &= ~ATTR_SIZE;
+
+- if (check_guard && guardtime != inode->i_ctime.tv_sec) {
+- err = nfserr_notsync;
+- goto out_put_write_access;
++ /*
++ * Avoid the additional setattr call below if the only other
++ * attribute that the client sends is the mtime, as we update
++ * it as part of the size change above.
++ */
++ if ((iap->ia_valid & ~ATTR_MTIME) == 0)
++ goto out_unlock;
+ }
+
+- fh_lock(fhp);
++ iap->ia_valid |= ATTR_CTIME;
+ host_err = notify_change(dentry, iap, NULL);
+- fh_unlock(fhp);
+- err = nfserrno(host_err);
+
+-out_put_write_access:
++out_unlock:
++ fh_unlock(fhp);
+ if (size_change)
+ put_write_access(inode);
+- if (!err)
+- err = nfserrno(commit_metadata(fhp));
+ out:
+- return err;
++ if (!host_err)
++ host_err = commit_metadata(fhp);
++ return nfserrno(host_err);
+ }
+
+ #if defined(CONFIG_NFSD_V4)
+diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c
+index 15f327bed8c6..7340c36978a3 100644
+--- a/fs/proc/proc_tty.c
++++ b/fs/proc/proc_tty.c
+@@ -14,6 +14,7 @@
+ #include <linux/tty.h>
+ #include <linux/seq_file.h>
+ #include <linux/bitops.h>
++#include "internal.h"
+
+ /*
+ * The /proc/tty directory inodes...
+@@ -164,7 +165,7 @@ void proc_tty_unregister_driver(struct tty_driver *driver)
+ if (!ent)
+ return;
+
+- remove_proc_entry(driver->driver_name, proc_tty_driver);
++ remove_proc_entry(ent->name, proc_tty_driver);
+
+ driver->proc_entry = NULL;
+ }
+diff --git a/fs/udf/super.c b/fs/udf/super.c
+index 6299f341967b..97bbcea2978a 100644
+--- a/fs/udf/super.c
++++ b/fs/udf/super.c
+@@ -705,7 +705,7 @@ static loff_t udf_check_vsd(struct super_block *sb)
+ else
+ sectorsize = sb->s_blocksize;
+
+- sector += (sbi->s_session << sb->s_blocksize_bits);
++ sector += (((loff_t)sbi->s_session) << sb->s_blocksize_bits);
+
+ udf_debug("Starting at sector %u (%ld byte sectors)\n",
+ (unsigned int)(sector >> sb->s_blocksize_bits),
+diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
+index 51c85b6a0c34..cf9029d9a3f3 100644
+--- a/fs/xfs/libxfs/xfs_bmap.c
++++ b/fs/xfs/libxfs/xfs_bmap.c
+@@ -2671,7 +2671,7 @@ xfs_bmap_add_extent_unwritten_real(
+ &i)))
+ goto done;
+ XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done);
+- cur->bc_rec.b.br_state = XFS_EXT_NORM;
++ cur->bc_rec.b.br_state = new->br_state;
+ if ((error = xfs_btree_insert(cur, &i)))
+ goto done;
+ XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
+diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
+index a217176fde65..bc151999b68b 100644
+--- a/fs/xfs/libxfs/xfs_inode_buf.c
++++ b/fs/xfs/libxfs/xfs_inode_buf.c
+@@ -301,6 +301,14 @@ xfs_dinode_verify(
+ if (dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC))
+ return false;
+
++ /* don't allow invalid i_size */
++ if (be64_to_cpu(dip->di_size) & (1ULL << 63))
++ return false;
++
++ /* No zero-length symlinks. */
++ if (S_ISLNK(be16_to_cpu(dip->di_mode)) && dip->di_size == 0)
++ return false;
++
+ /* only version 3 or greater inodes are extensively verified here */
+ if (dip->di_version < 3)
+ return true;
+diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
+index fb0eb697a621..bdb68e919b46 100644
+--- a/fs/xfs/xfs_buf.c
++++ b/fs/xfs/xfs_buf.c
+@@ -374,6 +374,7 @@ retry:
+ out_free_pages:
+ for (i = 0; i < bp->b_page_count; i++)
+ __free_page(bp->b_pages[i]);
++ bp->b_flags &= ~_XBF_PAGES;
+ return error;
+ }
+
+diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
+index 4aefff89949d..c0065697498c 100644
+--- a/fs/xfs/xfs_log_recover.c
++++ b/fs/xfs/xfs_log_recover.c
+@@ -738,7 +738,7 @@ xlog_find_head(
+ * in the in-core log. The following number can be made tighter if
+ * we actually look at the block size of the filesystem.
+ */
+- num_scan_bblks = XLOG_TOTAL_REC_SHIFT(log);
++ num_scan_bblks = min_t(int, log_bbnum, XLOG_TOTAL_REC_SHIFT(log));
+ if (head_blk >= num_scan_bblks) {
+ /*
+ * We are guaranteed that the entire check can be performed
+diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
+index a25414ce2898..9779c35f8454 100644
+--- a/include/crypto/internal/hash.h
++++ b/include/crypto/internal/hash.h
+@@ -83,6 +83,14 @@ int ahash_register_instance(struct crypto_template *tmpl,
+ struct ahash_instance *inst);
+ void ahash_free_instance(struct crypto_instance *inst);
+
++int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
++ unsigned int keylen);
++
++static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
++{
++ return alg->setkey != shash_no_setkey;
++}
++
+ int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
+ struct hash_alg_common *alg,
+ struct crypto_instance *inst);
+diff --git a/include/drm/drmP.h b/include/drm/drmP.h
+index 62c40777c009..8aba0f72aae4 100644
+--- a/include/drm/drmP.h
++++ b/include/drm/drmP.h
+@@ -153,6 +153,26 @@ void drm_err(const char *format, ...);
+ /** \name Macros to make printk easier */
+ /*@{*/
+
++#define _DRM_PRINTK(once, level, fmt, ...) \
++ do { \
++ printk##once(KERN_##level "[" DRM_NAME "] " fmt, \
++ ##__VA_ARGS__); \
++ } while (0)
++
++#define DRM_INFO(fmt, ...) \
++ _DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__)
++#define DRM_NOTE(fmt, ...) \
++ _DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__)
++#define DRM_WARN(fmt, ...) \
++ _DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__)
++
++#define DRM_INFO_ONCE(fmt, ...) \
++ _DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__)
++#define DRM_NOTE_ONCE(fmt, ...) \
++ _DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__)
++#define DRM_WARN_ONCE(fmt, ...) \
++ _DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__)
++
+ /**
+ * Error output.
+ *
+@@ -178,12 +198,6 @@ void drm_err(const char *format, ...);
+ drm_err(fmt, ##__VA_ARGS__); \
+ })
+
+-#define DRM_INFO(fmt, ...) \
+- printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
+-
+-#define DRM_INFO_ONCE(fmt, ...) \
+- printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
+-
+ /**
+ * Debug output.
+ *
+diff --git a/include/linux/bitops.h b/include/linux/bitops.h
+index 297f5bda4fdf..858020682ac8 100644
+--- a/include/linux/bitops.h
++++ b/include/linux/bitops.h
+@@ -171,6 +171,17 @@ static inline __s32 sign_extend32(__u32 value, int index)
+ return (__s32)(value << shift) >> shift;
+ }
+
++/**
++ * sign_extend64 - sign extend a 64-bit value using specified bit as sign-bit
++ * @value: value to sign extend
++ * @index: 0 based bit index (0<=index<64) to sign bit
++ */
++static inline __s64 sign_extend64(__u64 value, int index)
++{
++ __u8 shift = 63 - index;
++ return (__s64)(value << shift) >> shift;
++}
++
+ static inline unsigned fls_long(unsigned long l)
+ {
+ if (sizeof(l) == 4)
+diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
+index e6797ded700e..696b6c44c564 100644
+--- a/include/linux/buffer_head.h
++++ b/include/linux/buffer_head.h
+@@ -236,12 +236,10 @@ static inline int block_page_mkwrite_return(int err)
+ {
+ if (err == 0)
+ return VM_FAULT_LOCKED;
+- if (err == -EFAULT)
++ if (err == -EFAULT || err == -EAGAIN)
+ return VM_FAULT_NOPAGE;
+ if (err == -ENOMEM)
+ return VM_FAULT_OOM;
+- if (err == -EAGAIN)
+- return VM_FAULT_RETRY;
+ /* -ENOSPC, -EDQUOT, -EIO ... */
+ return VM_FAULT_SIGBUS;
+ }
+diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
+index e55c08bc3a96..0abc56140c83 100644
+--- a/include/linux/ceph/osdmap.h
++++ b/include/linux/ceph/osdmap.h
+@@ -49,7 +49,7 @@ static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool)
+ case CEPH_POOL_TYPE_EC:
+ return false;
+ default:
+- BUG_ON(1);
++ BUG();
+ }
+ }
+
+diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
+index 1ccaab44abcc..ec78cd93c0c1 100644
+--- a/include/linux/genalloc.h
++++ b/include/linux/genalloc.h
+@@ -31,6 +31,7 @@
+ #define __GENALLOC_H__
+
+ #include <linux/spinlock_types.h>
++#include <linux/atomic.h>
+
+ struct device;
+ struct device_node;
+@@ -66,7 +67,7 @@ struct gen_pool {
+ */
+ struct gen_pool_chunk {
+ struct list_head next_chunk; /* next chunk in pool */
+- atomic_t avail;
++ atomic_long_t avail;
+ phys_addr_t phys_addr; /* physical starting address of memory chunk */
+ unsigned long start_addr; /* start address of memory chunk */
+ unsigned long end_addr; /* end address of memory chunk (inclusive) */
+diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
+index 29a57a5b7cee..ef4945c3f713 100644
+--- a/include/linux/kvm_host.h
++++ b/include/linux/kvm_host.h
+@@ -173,8 +173,8 @@ int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
+ int len, void *val);
+ int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
+ int len, struct kvm_io_device *dev);
+-int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
+- struct kvm_io_device *dev);
++void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
++ struct kvm_io_device *dev);
+
+ #ifdef CONFIG_KVM_ASYNC_PF
+ struct kvm_async_pf {
+diff --git a/include/linux/log2.h b/include/linux/log2.h
+index ef3d4f67118c..c373295f359f 100644
+--- a/include/linux/log2.h
++++ b/include/linux/log2.h
+@@ -15,12 +15,6 @@
+ #include <linux/types.h>
+ #include <linux/bitops.h>
+
+-/*
+- * deal with unrepresentable constant logarithms
+- */
+-extern __attribute__((const, noreturn))
+-int ____ilog2_NaN(void);
+-
+ /*
+ * non-constant log of base 2 calculators
+ * - the arch may override these in asm/bitops.h if they can be implemented
+@@ -85,7 +79,7 @@ unsigned long __rounddown_pow_of_two(unsigned long n)
+ #define ilog2(n) \
+ ( \
+ __builtin_constant_p(n) ? ( \
+- (n) < 1 ? ____ilog2_NaN() : \
++ (n) < 2 ? 0 : \
+ (n) & (1ULL << 63) ? 63 : \
+ (n) & (1ULL << 62) ? 62 : \
+ (n) & (1ULL << 61) ? 61 : \
+@@ -148,10 +142,7 @@ unsigned long __rounddown_pow_of_two(unsigned long n)
+ (n) & (1ULL << 4) ? 4 : \
+ (n) & (1ULL << 3) ? 3 : \
+ (n) & (1ULL << 2) ? 2 : \
+- (n) & (1ULL << 1) ? 1 : \
+- (n) & (1ULL << 0) ? 0 : \
+- ____ilog2_NaN() \
+- ) : \
++ 1 ) : \
+ (sizeof(n) <= 4) ? \
+ __ilog2_u32(n) : \
+ __ilog2_u64(n) \
+diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
+index 83e80ab94500..41fe2f858830 100644
+--- a/include/linux/mlx4/device.h
++++ b/include/linux/mlx4/device.h
+@@ -443,6 +443,7 @@ enum {
+ enum {
+ MLX4_INTERFACE_STATE_UP = 1 << 0,
+ MLX4_INTERFACE_STATE_DELETION = 1 << 1,
++ MLX4_INTERFACE_STATE_NOWAIT = 1 << 2,
+ };
+
+ #define MSTR_SM_CHANGE_MASK (MLX4_EQ_PORT_INFO_MSTR_SM_SL_CHANGE_MASK | \
+diff --git a/include/linux/mman.h b/include/linux/mman.h
+index 16373c8f5f57..369bc3405a6d 100644
+--- a/include/linux/mman.h
++++ b/include/linux/mman.h
+@@ -63,8 +63,9 @@ static inline int arch_validate_prot(unsigned long prot)
+ * ("bit1" and "bit2" must be single bits)
+ */
+ #define _calc_vm_trans(x, bit1, bit2) \
++ ((!(bit1) || !(bit2)) ? 0 : \
+ ((bit1) <= (bit2) ? ((x) & (bit1)) * ((bit2) / (bit1)) \
+- : ((x) & (bit1)) / ((bit1) / (bit2)))
++ : ((x) & (bit1)) / ((bit1) / (bit2))))
+
+ /*
+ * Combine the mmap "prot" argument into "vm_flags" used internally.
+diff --git a/include/linux/omap-gpmc.h b/include/linux/omap-gpmc.h
+index 7dee00143afd..c201e31e9d7e 100644
+--- a/include/linux/omap-gpmc.h
++++ b/include/linux/omap-gpmc.h
+@@ -191,10 +191,11 @@ static inline int gpmc_nand_init(struct omap_nand_platform_data *d,
+ #endif
+
+ #if IS_ENABLED(CONFIG_MTD_ONENAND_OMAP2)
+-extern void gpmc_onenand_init(struct omap_onenand_platform_data *d);
++extern int gpmc_onenand_init(struct omap_onenand_platform_data *d);
+ #else
+ #define board_onenand_data NULL
+-static inline void gpmc_onenand_init(struct omap_onenand_platform_data *d)
++static inline int gpmc_onenand_init(struct omap_onenand_platform_data *d)
+ {
++ return 0;
+ }
+ #endif
+diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
+index dae99d7d2bc0..706a7017885c 100644
+--- a/include/scsi/libsas.h
++++ b/include/scsi/libsas.h
+@@ -165,11 +165,11 @@ struct expander_device {
+
+ struct sata_device {
+ unsigned int class;
+- struct smp_resp rps_resp; /* report_phy_sata_resp */
+ u8 port_no; /* port number, if this is a PM (Port) */
+
+ struct ata_port *ap;
+ struct ata_host ata_host;
++ struct smp_resp rps_resp ____cacheline_aligned; /* report_phy_sata_resp */
+ u8 fis[ATA_RESP_FIS_SIZE];
+ };
+
+diff --git a/include/uapi/linux/packet_diag.h b/include/uapi/linux/packet_diag.h
+index d08c63f3dd6f..0c5d5dd61b6a 100644
+--- a/include/uapi/linux/packet_diag.h
++++ b/include/uapi/linux/packet_diag.h
+@@ -64,7 +64,7 @@ struct packet_diag_mclist {
+ __u32 pdmc_count;
+ __u16 pdmc_type;
+ __u16 pdmc_alen;
+- __u8 pdmc_addr[MAX_ADDR_LEN];
++ __u8 pdmc_addr[32]; /* MAX_ADDR_LEN */
+ };
+
+ struct packet_diag_ring {
+diff --git a/kernel/audit.c b/kernel/audit.c
+index 1c13e4267de6..ae05a41d713a 100644
+--- a/kernel/audit.c
++++ b/kernel/audit.c
+@@ -80,13 +80,13 @@ static int audit_initialized;
+ #define AUDIT_OFF 0
+ #define AUDIT_ON 1
+ #define AUDIT_LOCKED 2
+-u32 audit_enabled;
+-u32 audit_ever_enabled;
++u32 audit_enabled = AUDIT_OFF;
++u32 audit_ever_enabled = !!AUDIT_OFF;
+
+ EXPORT_SYMBOL_GPL(audit_enabled);
+
+ /* Default state when kernel boots without any parameters. */
+-static u32 audit_default;
++static u32 audit_default = AUDIT_OFF;
+
+ /* If auditing cannot proceed, audit_failure selects what happens. */
+ static u32 audit_failure = AUDIT_FAIL_PRINTK;
+@@ -1165,8 +1165,6 @@ static int __init audit_init(void)
+ skb_queue_head_init(&audit_skb_queue);
+ skb_queue_head_init(&audit_skb_hold_queue);
+ audit_initialized = AUDIT_INITIALIZED;
+- audit_enabled = audit_default;
+- audit_ever_enabled |= !!audit_default;
+
+ audit_log(NULL, GFP_KERNEL, AUDIT_KERNEL, "initialized");
+
+@@ -1183,6 +1181,8 @@ static int __init audit_enable(char *str)
+ audit_default = !!simple_strtol(str, NULL, 0);
+ if (!audit_default)
+ audit_initialized = AUDIT_DISABLED;
++ audit_enabled = audit_default;
++ audit_ever_enabled = !!audit_enabled;
+
+ pr_info("%s\n", audit_default ?
+ "enabled (after initialization)" : "disabled (until reboot)");
+diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
+index fc1ef736253c..77777d918676 100644
+--- a/kernel/debug/kdb/kdb_io.c
++++ b/kernel/debug/kdb/kdb_io.c
+@@ -349,7 +349,7 @@ poll_again:
+ }
+ kdb_printf("\n");
+ for (i = 0; i < count; i++) {
+- if (kallsyms_symbol_next(p_tmp, i) < 0)
++ if (WARN_ON(!kallsyms_symbol_next(p_tmp, i)))
+ break;
+ kdb_printf("%s ", p_tmp);
+ *(p_tmp + len) = '\0';
+diff --git a/kernel/gcov/base.c b/kernel/gcov/base.c
+index a744098e4eb7..f850e906564b 100644
+--- a/kernel/gcov/base.c
++++ b/kernel/gcov/base.c
+@@ -92,6 +92,18 @@ void __gcov_merge_time_profile(gcov_type *counters, unsigned int n_counters)
+ }
+ EXPORT_SYMBOL(__gcov_merge_time_profile);
+
++void __gcov_merge_icall_topn(gcov_type *counters, unsigned int n_counters)
++{
++ /* Unused. */
++}
++EXPORT_SYMBOL(__gcov_merge_icall_topn);
++
++void __gcov_exit(void)
++{
++ /* Unused. */
++}
++EXPORT_SYMBOL(__gcov_exit);
++
+ /**
+ * gcov_enable_events - enable event reporting through gcov_event()
+ *
+diff --git a/kernel/gcov/gcc_4_7.c b/kernel/gcov/gcc_4_7.c
+index 826ba9fb5e32..46a18e72bce6 100644
+--- a/kernel/gcov/gcc_4_7.c
++++ b/kernel/gcov/gcc_4_7.c
+@@ -18,7 +18,11 @@
+ #include <linux/vmalloc.h>
+ #include "gcov.h"
+
+-#if __GNUC__ == 4 && __GNUC_MINOR__ >= 9
++#if (__GNUC__ >= 7)
++#define GCOV_COUNTERS 9
++#elif (__GNUC__ > 5) || (__GNUC__ == 5 && __GNUC_MINOR__ >= 1)
++#define GCOV_COUNTERS 10
++#elif __GNUC__ == 4 && __GNUC_MINOR__ >= 9
+ #define GCOV_COUNTERS 9
+ #else
+ #define GCOV_COUNTERS 8
+diff --git a/kernel/padata.c b/kernel/padata.c
+index ed6f4f93cc92..ecc7b3f452c7 100644
+--- a/kernel/padata.c
++++ b/kernel/padata.c
+@@ -189,19 +189,20 @@ static struct padata_priv *padata_get_next(struct parallel_data *pd)
+
+ reorder = &next_queue->reorder;
+
++ spin_lock(&reorder->lock);
+ if (!list_empty(&reorder->list)) {
+ padata = list_entry(reorder->list.next,
+ struct padata_priv, list);
+
+- spin_lock(&reorder->lock);
+ list_del_init(&padata->list);
+ atomic_dec(&pd->reorder_objects);
+- spin_unlock(&reorder->lock);
+
+ pd->processed++;
+
++ spin_unlock(&reorder->lock);
+ goto out;
+ }
++ spin_unlock(&reorder->lock);
+
+ if (__this_cpu_read(pd->pqueue->cpu_index) == next_queue->cpu_index) {
+ padata = ERR_PTR(-ENODATA);
+diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
+index 5e95145088fd..e45d441176a8 100644
+--- a/kernel/sched/deadline.c
++++ b/kernel/sched/deadline.c
+@@ -419,13 +419,13 @@ static void replenish_dl_entity(struct sched_dl_entity *dl_se,
+ *
+ * This function returns true if:
+ *
+- * runtime / (deadline - t) > dl_runtime / dl_period ,
++ * runtime / (deadline - t) > dl_runtime / dl_deadline ,
+ *
+ * IOW we can't recycle current parameters.
+ *
+- * Notice that the bandwidth check is done against the period. For
++ * Notice that the bandwidth check is done against the deadline. For
+ * task with deadline equal to period this is the same of using
+- * dl_deadline instead of dl_period in the equation above.
++ * dl_period instead of dl_deadline in the equation above.
+ */
+ static bool dl_entity_overflow(struct sched_dl_entity *dl_se,
+ struct sched_dl_entity *pi_se, u64 t)
+@@ -450,7 +450,7 @@ static bool dl_entity_overflow(struct sched_dl_entity *dl_se,
+ * of anything below microseconds resolution is actually fiction
+ * (but still we want to give the user that illusion >;).
+ */
+- left = (pi_se->dl_period >> DL_SCALE) * (dl_se->runtime >> DL_SCALE);
++ left = (pi_se->dl_deadline >> DL_SCALE) * (dl_se->runtime >> DL_SCALE);
+ right = ((dl_se->deadline - t) >> DL_SCALE) *
+ (pi_se->dl_runtime >> DL_SCALE);
+
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index ca1a306ea7e6..7a26798ffbf9 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -3376,37 +3376,30 @@ static const struct file_operations show_traces_fops = {
+ .llseek = seq_lseek,
+ };
+
+-/*
+- * The tracer itself will not take this lock, but still we want
+- * to provide a consistent cpumask to user-space:
+- */
+-static DEFINE_MUTEX(tracing_cpumask_update_lock);
+-
+-/*
+- * Temporary storage for the character representation of the
+- * CPU bitmask (and one more byte for the newline):
+- */
+-static char mask_str[NR_CPUS + 1];
+-
+ static ssize_t
+ tracing_cpumask_read(struct file *filp, char __user *ubuf,
+ size_t count, loff_t *ppos)
+ {
+ struct trace_array *tr = file_inode(filp)->i_private;
++ char *mask_str;
+ int len;
+
+- mutex_lock(&tracing_cpumask_update_lock);
++ len = snprintf(NULL, 0, "%*pb\n",
++ cpumask_pr_args(tr->tracing_cpumask)) + 1;
++ mask_str = kmalloc(len, GFP_KERNEL);
++ if (!mask_str)
++ return -ENOMEM;
+
+- len = snprintf(mask_str, count, "%*pb\n",
++ len = snprintf(mask_str, len, "%*pb\n",
+ cpumask_pr_args(tr->tracing_cpumask));
+ if (len >= count) {
+ count = -EINVAL;
+ goto out_err;
+ }
+- count = simple_read_from_buffer(ubuf, count, ppos, mask_str, NR_CPUS+1);
++ count = simple_read_from_buffer(ubuf, count, ppos, mask_str, len);
+
+ out_err:
+- mutex_unlock(&tracing_cpumask_update_lock);
++ kfree(mask_str);
+
+ return count;
+ }
+@@ -3426,8 +3419,6 @@ tracing_cpumask_write(struct file *filp, const char __user *ubuf,
+ if (err)
+ goto err_unlock;
+
+- mutex_lock(&tracing_cpumask_update_lock);
+-
+ local_irq_disable();
+ arch_spin_lock(&tr->max_lock);
+ for_each_tracing_cpu(cpu) {
+@@ -3450,8 +3441,6 @@ tracing_cpumask_write(struct file *filp, const char __user *ubuf,
+ local_irq_enable();
+
+ cpumask_copy(tr->tracing_cpumask, tracing_cpumask_new);
+-
+- mutex_unlock(&tracing_cpumask_update_lock);
+ free_cpumask_var(tracing_cpumask_new);
+
+ return count;
+diff --git a/kernel/workqueue.c b/kernel/workqueue.c
+index 791f6ebc84a3..376db986db9b 100644
+--- a/kernel/workqueue.c
++++ b/kernel/workqueue.c
+@@ -1484,6 +1484,7 @@ static void __queue_delayed_work(int cpu, struct workqueue_struct *wq,
+ struct timer_list *timer = &dwork->timer;
+ struct work_struct *work = &dwork->work;
+
++ WARN_ON_ONCE(!wq);
+ WARN_ON_ONCE(timer->function != delayed_work_timer_fn ||
+ timer->data != (unsigned long)dwork);
+ WARN_ON_ONCE(timer_pending(timer));
+diff --git a/lib/asn1_decoder.c b/lib/asn1_decoder.c
+index 3bb040e347ec..bbdfbcb912f3 100644
+--- a/lib/asn1_decoder.c
++++ b/lib/asn1_decoder.c
+@@ -421,6 +421,8 @@ next_op:
+ else
+ act = machine[pc + 1];
+ ret = actions[act](context, hdr, 0, data + tdp, len);
++ if (ret < 0)
++ return ret;
+ }
+ pc += asn1_op_lengths[op];
+ goto next_op;
+diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
+index d8f3d3150603..2b382c165571 100644
+--- a/lib/dynamic_debug.c
++++ b/lib/dynamic_debug.c
+@@ -353,6 +353,10 @@ static int ddebug_parse_query(char *words[], int nwords,
+ if (parse_lineno(last, &query->last_lineno) < 0)
+ return -EINVAL;
+
++ /* special case for last lineno not specified */
++ if (query->last_lineno == 0)
++ query->last_lineno = UINT_MAX;
++
+ if (query->last_lineno < query->first_lineno) {
+ pr_err("last-line:%d < 1st-line:%d\n",
+ query->last_lineno,
+diff --git a/lib/genalloc.c b/lib/genalloc.c
+index d214866eeea2..59dafa4ff412 100644
+--- a/lib/genalloc.c
++++ b/lib/genalloc.c
+@@ -193,7 +193,7 @@ int gen_pool_add_virt(struct gen_pool *pool, unsigned long virt, phys_addr_t phy
+ chunk->phys_addr = phys;
+ chunk->start_addr = virt;
+ chunk->end_addr = virt + size - 1;
+- atomic_set(&chunk->avail, size);
++ atomic_long_set(&chunk->avail, size);
+
+ spin_lock(&pool->lock);
+ list_add_rcu(&chunk->next_chunk, &pool->chunks);
+@@ -284,7 +284,7 @@ unsigned long gen_pool_alloc(struct gen_pool *pool, size_t size)
+ nbits = (size + (1UL << order) - 1) >> order;
+ rcu_read_lock();
+ list_for_each_entry_rcu(chunk, &pool->chunks, next_chunk) {
+- if (size > atomic_read(&chunk->avail))
++ if (size > atomic_long_read(&chunk->avail))
+ continue;
+
+ end_bit = chunk_size(chunk) >> order;
+@@ -303,7 +303,7 @@ retry:
+
+ addr = chunk->start_addr + ((unsigned long)start_bit << order);
+ size = nbits << order;
+- atomic_sub(size, &chunk->avail);
++ atomic_long_sub(size, &chunk->avail);
+ break;
+ }
+ rcu_read_unlock();
+@@ -369,7 +369,7 @@ void gen_pool_free(struct gen_pool *pool, unsigned long addr, size_t size)
+ remain = bitmap_clear_ll(chunk->bits, start_bit, nbits);
+ BUG_ON(remain);
+ size = nbits << order;
+- atomic_add(size, &chunk->avail);
++ atomic_long_add(size, &chunk->avail);
+ rcu_read_unlock();
+ return;
+ }
+@@ -443,7 +443,7 @@ size_t gen_pool_avail(struct gen_pool *pool)
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(chunk, &pool->chunks, next_chunk)
+- avail += atomic_read(&chunk->avail);
++ avail += atomic_long_read(&chunk->avail);
+ rcu_read_unlock();
+ return avail;
+ }
+diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
+index 940ba74b297c..d30864a8ed57 100644
+--- a/net/ceph/messenger.c
++++ b/net/ceph/messenger.c
+@@ -6,6 +6,7 @@
+ #include <linux/inet.h>
+ #include <linux/kthread.h>
+ #include <linux/net.h>
++#include <linux/sched.h>
+ #include <linux/slab.h>
+ #include <linux/socket.h>
+ #include <linux/string.h>
+@@ -477,11 +478,16 @@ static int ceph_tcp_connect(struct ceph_connection *con)
+ {
+ struct sockaddr_storage *paddr = &con->peer_addr.in_addr;
+ struct socket *sock;
++ unsigned int noio_flag;
+ int ret;
+
+ BUG_ON(con->sock);
++
++ /* sock_create_kern() allocates with GFP_KERNEL */
++ noio_flag = memalloc_noio_save();
+ ret = sock_create_kern(con->peer_addr.in_addr.ss_family, SOCK_STREAM,
+ IPPROTO_TCP, &sock);
++ memalloc_noio_restore(noio_flag);
+ if (ret)
+ return ret;
+ sock->sk->sk_allocation = GFP_NOFS;
+diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
+index ddc3573894b0..bc95e48d5cfb 100644
+--- a/net/ceph/osdmap.c
++++ b/net/ceph/osdmap.c
+@@ -1265,7 +1265,6 @@ static int decode_new_up_state_weight(void **p, void *end,
+ if ((map->osd_state[osd] & CEPH_OSD_EXISTS) &&
+ (xorstate & CEPH_OSD_EXISTS)) {
+ pr_info("osd%d does not exist\n", osd);
+- map->osd_weight[osd] = CEPH_OSD_IN;
+ ret = set_primary_affinity(map, osd,
+ CEPH_OSD_DEFAULT_PRIMARY_AFFINITY);
+ if (ret)
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 33674208d325..4d4213b6f7f6 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -1268,6 +1268,7 @@ void netdev_notify_peers(struct net_device *dev)
+ {
+ rtnl_lock();
+ call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, dev);
++ call_netdevice_notifiers(NETDEV_RESEND_IGMP, dev);
+ rtnl_unlock();
+ }
+ EXPORT_SYMBOL(netdev_notify_peers);
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 2894bb5b7e0a..97a1fa140a9b 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -3696,13 +3696,14 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
+ if (!skb_may_tx_timestamp(sk, false))
+ return;
+
+- /* take a reference to prevent skb_orphan() from freeing the socket */
+- sock_hold(sk);
+-
+- *skb_hwtstamps(skb) = *hwtstamps;
+- __skb_complete_tx_timestamp(skb, sk, SCM_TSTAMP_SND);
+-
+- sock_put(sk);
++ /* Take a reference to prevent skb_orphan() from freeing the socket,
++ * but only if the socket refcount is not zero.
++ */
++ if (likely(atomic_inc_not_zero(&sk->sk_refcnt))) {
++ *skb_hwtstamps(skb) = *hwtstamps;
++ __skb_complete_tx_timestamp(skb, sk, SCM_TSTAMP_SND);
++ sock_put(sk);
++ }
+ }
+ EXPORT_SYMBOL_GPL(skb_complete_tx_timestamp);
+
+@@ -3753,7 +3754,7 @@ void skb_complete_wifi_ack(struct sk_buff *skb, bool acked)
+ {
+ struct sock *sk = skb->sk;
+ struct sock_exterr_skb *serr;
+- int err;
++ int err = 1;
+
+ skb->wifi_acked_valid = 1;
+ skb->wifi_acked = acked;
+@@ -3763,14 +3764,15 @@ void skb_complete_wifi_ack(struct sk_buff *skb, bool acked)
+ serr->ee.ee_errno = ENOMSG;
+ serr->ee.ee_origin = SO_EE_ORIGIN_TXSTATUS;
+
+- /* take a reference to prevent skb_orphan() from freeing the socket */
+- sock_hold(sk);
+-
+- err = sock_queue_err_skb(sk, skb);
++ /* Take a reference to prevent skb_orphan() from freeing the socket,
++ * but only if the socket refcount is not zero.
++ */
++ if (likely(atomic_inc_not_zero(&sk->sk_refcnt))) {
++ err = sock_queue_err_skb(sk, skb);
++ sock_put(sk);
++ }
+ if (err)
+ kfree_skb(skb);
+-
+- sock_put(sk);
+ }
+ EXPORT_SYMBOL_GPL(skb_complete_wifi_ack);
+
+diff --git a/net/core/sock.c b/net/core/sock.c
+index e369262ea57e..76e0b874f378 100644
+--- a/net/core/sock.c
++++ b/net/core/sock.c
+@@ -1435,6 +1435,11 @@ static void __sk_free(struct sock *sk)
+ pr_debug("%s: optmem leakage (%d bytes) detected\n",
+ __func__, atomic_read(&sk->sk_omem_alloc));
+
++ if (sk->sk_frag.page) {
++ put_page(sk->sk_frag.page);
++ sk->sk_frag.page = NULL;
++ }
++
+ if (sk->sk_peer_cred)
+ put_cred(sk->sk_peer_cred);
+ put_pid(sk->sk_peer_pid);
+@@ -2622,11 +2627,6 @@ void sk_common_release(struct sock *sk)
+
+ sk_refcnt_debug_release(sk);
+
+- if (sk->sk_frag.page) {
+- put_page(sk->sk_frag.page);
+- sk->sk_frag.page = NULL;
+- }
+-
+ sock_put(sk);
+ }
+ EXPORT_SYMBOL(sk_common_release);
+diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
+index f053198e730c..5e3a7302f774 100644
+--- a/net/dccp/ccids/ccid2.c
++++ b/net/dccp/ccids/ccid2.c
+@@ -749,6 +749,7 @@ static void ccid2_hc_tx_exit(struct sock *sk)
+ for (i = 0; i < hc->tx_seqbufc; i++)
+ kfree(hc->tx_seqbuf[i]);
+ hc->tx_seqbufc = 0;
++ dccp_ackvec_parsed_cleanup(&hc->tx_av_chunks);
+ }
+
+ static void ccid2_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
+diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
+index fd7ac7895c38..bafb2223b879 100644
+--- a/net/dccp/ipv4.c
++++ b/net/dccp/ipv4.c
+@@ -289,7 +289,8 @@ static void dccp_v4_err(struct sk_buff *skb, u32 info)
+
+ switch (type) {
+ case ICMP_REDIRECT:
+- dccp_do_redirect(skb, sk);
++ if (!sock_owned_by_user(sk))
++ dccp_do_redirect(skb, sk);
+ goto out;
+ case ICMP_SOURCE_QUENCH:
+ /* Just silently ignore these. */
+diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
+index a0490508d213..d61027e78e25 100644
+--- a/net/dccp/ipv6.c
++++ b/net/dccp/ipv6.c
+@@ -121,10 +121,12 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+ np = inet6_sk(sk);
+
+ if (type == NDISC_REDIRECT) {
+- struct dst_entry *dst = __sk_dst_check(sk, np->dst_cookie);
++ if (!sock_owned_by_user(sk)) {
++ struct dst_entry *dst = __sk_dst_check(sk, np->dst_cookie);
+
+- if (dst)
+- dst->ops->redirect(dst, sk, skb);
++ if (dst)
++ dst->ops->redirect(dst, sk, skb);
++ }
+ goto out;
+ }
+
+diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c
+index 838f524cf11a..53c38641fe98 100644
+--- a/net/dccp/minisocks.c
++++ b/net/dccp/minisocks.c
+@@ -122,6 +122,7 @@ struct sock *dccp_create_openreq_child(struct sock *sk,
+ /* It is still raw copy of parent, so invalidate
+ * destructor and make plain sk_free() */
+ newsk->sk_destruct = NULL;
++ bh_unlock_sock(newsk);
+ sk_free(newsk);
+ return NULL;
+ }
+diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
+index 765909ba781e..a8db70b7fe45 100644
+--- a/net/ipv4/fib_frontend.c
++++ b/net/ipv4/fib_frontend.c
+@@ -1033,7 +1033,8 @@ static void nl_fib_input(struct sk_buff *skb)
+
+ net = sock_net(skb->sk);
+ nlh = nlmsg_hdr(skb);
+- if (skb->len < NLMSG_HDRLEN || skb->len < nlh->nlmsg_len ||
++ if (skb->len < nlmsg_total_size(sizeof(*frn)) ||
++ skb->len < nlh->nlmsg_len ||
+ nlmsg_len(nlh) < sizeof(*frn))
+ return;
+
+diff --git a/net/ipv4/route.c b/net/ipv4/route.c
+index 6141fef3a64b..6a9a495aff23 100644
+--- a/net/ipv4/route.c
++++ b/net/ipv4/route.c
+@@ -622,9 +622,12 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
+ struct fnhe_hash_bucket *hash;
+ struct fib_nh_exception *fnhe;
+ struct rtable *rt;
++ u32 genid, hval;
+ unsigned int i;
+ int depth;
+- u32 hval = fnhe_hashfun(daddr);
++
++ genid = fnhe_genid(dev_net(nh->nh_dev));
++ hval = fnhe_hashfun(daddr);
+
+ spin_lock_bh(&fnhe_lock);
+
+@@ -647,12 +650,13 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
+ }
+
+ if (fnhe) {
++ if (fnhe->fnhe_genid != genid)
++ fnhe->fnhe_genid = genid;
+ if (gw)
+ fnhe->fnhe_gw = gw;
+- if (pmtu) {
++ if (pmtu)
+ fnhe->fnhe_pmtu = pmtu;
+- fnhe->fnhe_expires = max(1UL, expires);
+- }
++ fnhe->fnhe_expires = max(1UL, expires);
+ /* Update all cached dsts too */
+ rt = rcu_dereference(fnhe->fnhe_rth_input);
+ if (rt)
+@@ -671,7 +675,7 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
+ fnhe->fnhe_next = hash->chain;
+ rcu_assign_pointer(hash->chain, fnhe);
+ }
+- fnhe->fnhe_genid = fnhe_genid(dev_net(nh->nh_dev));
++ fnhe->fnhe_genid = genid;
+ fnhe->fnhe_daddr = daddr;
+ fnhe->fnhe_gw = gw;
+ fnhe->fnhe_pmtu = pmtu;
+@@ -1887,6 +1891,7 @@ int ip_route_input_noref(struct sk_buff *skb, __be32 daddr, __be32 saddr,
+ {
+ int res;
+
++ tos &= IPTOS_RT_MASK;
+ rcu_read_lock();
+
+ /* Multicast recognition logic is moved from route cache to here.
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index 1ba4d0964042..a1de8300cfce 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -2227,6 +2227,8 @@ int tcp_disconnect(struct sock *sk, int flags)
+ tcp_init_send_head(sk);
+ memset(&tp->rx_opt, 0, sizeof(tp->rx_opt));
+ __sk_dst_reset(sk);
++ dst_release(sk->sk_rx_dst);
++ sk->sk_rx_dst = NULL;
+
+ WARN_ON(inet->inet_num && !icsk->icsk_bind_hash);
+
+diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
+index 95f98d2444fa..4763c431f7d8 100644
+--- a/net/ipv4/tcp_input.c
++++ b/net/ipv4/tcp_input.c
+@@ -4895,7 +4895,7 @@ static void tcp_check_space(struct sock *sk)
+ if (sock_flag(sk, SOCK_QUEUE_SHRUNK)) {
+ sock_reset_flag(sk, SOCK_QUEUE_SHRUNK);
+ /* pairs with tcp_poll() */
+- smp_mb__after_atomic();
++ smp_mb();
+ if (sk->sk_socket &&
+ test_bit(SOCK_NOSPACE, &sk->sk_socket->flags))
+ tcp_new_space(sk);
+@@ -5388,6 +5388,7 @@ void tcp_finish_connect(struct sock *sk, struct sk_buff *skb)
+ struct inet_connection_sock *icsk = inet_csk(sk);
+
+ tcp_set_state(sk, TCP_ESTABLISHED);
++ icsk->icsk_ack.lrcvtime = tcp_time_stamp;
+
+ if (skb) {
+ icsk->icsk_af_ops->sk_rx_dst_set(sk, skb);
+@@ -5600,7 +5601,6 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
+ * to stand against the temptation 8) --ANK
+ */
+ inet_csk_schedule_ack(sk);
+- icsk->icsk_ack.lrcvtime = tcp_time_stamp;
+ tcp_enter_quickack_mode(sk);
+ inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK,
+ TCP_DELACK_MAX, TCP_RTO_MAX);
+diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
+index 13b92d595138..2923f7f7932a 100644
+--- a/net/ipv4/tcp_ipv4.c
++++ b/net/ipv4/tcp_ipv4.c
+@@ -271,10 +271,13 @@ EXPORT_SYMBOL(tcp_v4_connect);
+ */
+ void tcp_v4_mtu_reduced(struct sock *sk)
+ {
+- struct dst_entry *dst;
+ struct inet_sock *inet = inet_sk(sk);
+- u32 mtu = tcp_sk(sk)->mtu_info;
++ struct dst_entry *dst;
++ u32 mtu;
+
++ if ((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE))
++ return;
++ mtu = tcp_sk(sk)->mtu_info;
+ dst = inet_csk_update_pmtu(sk, mtu);
+ if (!dst)
+ return;
+@@ -417,7 +420,8 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
+
+ switch (type) {
+ case ICMP_REDIRECT:
+- do_redirect(icmp_skb, sk);
++ if (!sock_owned_by_user(sk))
++ do_redirect(icmp_skb, sk);
+ goto out;
+ case ICMP_SOURCE_QUENCH:
+ /* Just silently ignore these. */
+diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
+index fec2907b85e8..2c58a5d4cba8 100644
+--- a/net/ipv4/tcp_minisocks.c
++++ b/net/ipv4/tcp_minisocks.c
+@@ -462,6 +462,7 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
+ newtp->srtt_us = 0;
+ newtp->mdev_us = jiffies_to_usecs(TCP_TIMEOUT_INIT);
+ newicsk->icsk_rto = TCP_TIMEOUT_INIT;
++ newicsk->icsk_ack.lrcvtime = tcp_time_stamp;
+
+ newtp->packets_out = 0;
+ newtp->retrans_out = 0;
+diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
+index c8f97858d6f6..f8c6b2343301 100644
+--- a/net/ipv4/tcp_timer.c
++++ b/net/ipv4/tcp_timer.c
+@@ -223,7 +223,8 @@ void tcp_delack_timer_handler(struct sock *sk)
+
+ sk_mem_reclaim_partial(sk);
+
+- if (sk->sk_state == TCP_CLOSE || !(icsk->icsk_ack.pending & ICSK_ACK_TIMER))
++ if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN)) ||
++ !(icsk->icsk_ack.pending & ICSK_ACK_TIMER))
+ goto out;
+
+ if (time_after(icsk->icsk_ack.timeout, jiffies)) {
+@@ -504,7 +505,8 @@ void tcp_write_timer_handler(struct sock *sk)
+ struct inet_connection_sock *icsk = inet_csk(sk);
+ int event;
+
+- if (sk->sk_state == TCP_CLOSE || !icsk->icsk_pending)
++ if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN)) ||
++ !icsk->icsk_pending)
+ goto out;
+
+ if (time_after(icsk->icsk_timeout, jiffies)) {
+diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
+index df4edab0ba3a..8441f9939d49 100644
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -3068,6 +3068,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
+ {
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+ struct inet6_dev *idev = __in6_dev_get(dev);
++ struct net *net = dev_net(dev);
+ int run_pending = 0;
+ int err;
+
+@@ -3170,7 +3171,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
+ * IPV6_MIN_MTU stop IPv6 on this interface.
+ */
+ if (dev->mtu < IPV6_MIN_MTU)
+- addrconf_ifdown(dev, 1);
++ addrconf_ifdown(dev, dev != net->loopback_dev);
+ }
+ break;
+
+diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
+index bad62fa5e70f..44bae47fa1b9 100644
+--- a/net/ipv6/af_inet6.c
++++ b/net/ipv6/af_inet6.c
+@@ -889,12 +889,12 @@ static int __init inet6_init(void)
+ err = register_pernet_subsys(&inet6_net_ops);
+ if (err)
+ goto register_pernet_fail;
+- err = icmpv6_init();
+- if (err)
+- goto icmp_fail;
+ err = ip6_mr_init();
+ if (err)
+ goto ipmr_fail;
++ err = icmpv6_init();
++ if (err)
++ goto icmp_fail;
+ err = ndisc_init();
+ if (err)
+ goto ndisc_fail;
+@@ -1012,10 +1012,10 @@ igmp_fail:
+ ndisc_cleanup();
+ ndisc_fail:
+ ip6_mr_cleanup();
+-ipmr_fail:
+- icmpv6_cleanup();
+ icmp_fail:
+ unregister_pernet_subsys(&inet6_net_ops);
++ipmr_fail:
++ icmpv6_cleanup();
+ register_pernet_fail:
+ sock_unregister(PF_INET6);
+ rtnl_unregister_all(PF_INET6);
+diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
+index e7a60f5de097..0c9a4cac95ee 100644
+--- a/net/ipv6/ip6_fib.c
++++ b/net/ipv6/ip6_fib.c
+@@ -868,6 +868,8 @@ add:
+ ins = &rt->dst.rt6_next;
+ iter = *ins;
+ while (iter) {
++ if (iter->rt6i_metric > rt->rt6i_metric)
++ break;
+ if (rt6_qualify_for_ecmp(iter)) {
+ *ins = iter->dst.rt6_next;
+ fib6_purge_rt(iter, fn, info->nl_net);
+diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
+index 6ac448d8dd76..c460e653b6a5 100644
+--- a/net/ipv6/ip6_vti.c
++++ b/net/ipv6/ip6_vti.c
+@@ -189,12 +189,12 @@ static int vti6_tnl_create2(struct net_device *dev)
+ struct vti6_net *ip6n = net_generic(net, vti6_net_id);
+ int err;
+
++ dev->rtnl_link_ops = &vti6_link_ops;
+ err = register_netdevice(dev);
+ if (err < 0)
+ goto out;
+
+ strcpy(t->parms.name, dev->name);
+- dev->rtnl_link_ops = &vti6_link_ops;
+
+ dev_hold(dev);
+ vti6_tnl_link(ip6n, t);
+@@ -474,11 +474,15 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
+ if (!skb->ignore_df && skb->len > mtu) {
+ skb_dst(skb)->ops->update_pmtu(dst, NULL, skb, mtu);
+
+- if (skb->protocol == htons(ETH_P_IPV6))
++ if (skb->protocol == htons(ETH_P_IPV6)) {
++ if (mtu < IPV6_MIN_MTU)
++ mtu = IPV6_MIN_MTU;
++
+ icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
+- else
++ } else {
+ icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
+ htonl(mtu));
++ }
+
+ return -EMSGSIZE;
+ }
+@@ -681,6 +685,10 @@ vti6_parm_to_user(struct ip6_tnl_parm2 *u, const struct __ip6_tnl_parm *p)
+ u->link = p->link;
+ u->i_key = p->i_key;
+ u->o_key = p->o_key;
++ if (u->i_key)
++ u->i_flags |= GRE_KEY;
++ if (u->o_key)
++ u->o_flags |= GRE_KEY;
+ u->proto = p->proto;
+
+ memcpy(u->name, p->name, sizeof(u->name));
+diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
+index 85c4b2fff504..295502b261a8 100644
+--- a/net/ipv6/sit.c
++++ b/net/ipv6/sit.c
+@@ -1092,6 +1092,7 @@ static void ipip6_tunnel_update(struct ip_tunnel *t, struct ip_tunnel_parm *p)
+ ipip6_tunnel_link(sitn, t);
+ t->parms.iph.ttl = p->iph.ttl;
+ t->parms.iph.tos = p->iph.tos;
++ t->parms.iph.frag_off = p->iph.frag_off;
+ if (t->parms.link != p->link) {
+ t->parms.link = p->link;
+ ipip6_tunnel_bind_dev(t->dev);
+diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
+index 0b43bcb6e576..2f0f1b415fbe 100644
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -382,10 +382,12 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+ np = inet6_sk(sk);
+
+ if (type == NDISC_REDIRECT) {
+- struct dst_entry *dst = __sk_dst_check(sk, np->dst_cookie);
++ if (!sock_owned_by_user(sk)) {
++ struct dst_entry *dst = __sk_dst_check(sk, np->dst_cookie);
+
+- if (dst)
+- dst->ops->redirect(dst, sk, skb);
++ if (dst)
++ dst->ops->redirect(dst, sk, skb);
++ }
+ goto out;
+ }
+
+diff --git a/net/irda/irqueue.c b/net/irda/irqueue.c
+index acbe61c7e683..160dc89335e2 100644
+--- a/net/irda/irqueue.c
++++ b/net/irda/irqueue.c
+@@ -383,9 +383,6 @@ EXPORT_SYMBOL(hashbin_new);
+ * for deallocating this structure if it's complex. If not the user can
+ * just supply kfree, which should take care of the job.
+ */
+-#ifdef CONFIG_LOCKDEP
+-static int hashbin_lock_depth = 0;
+-#endif
+ int hashbin_delete( hashbin_t* hashbin, FREE_FUNC free_func)
+ {
+ irda_queue_t* queue;
+@@ -396,22 +393,27 @@ int hashbin_delete( hashbin_t* hashbin, FREE_FUNC free_func)
+ IRDA_ASSERT(hashbin->magic == HB_MAGIC, return -1;);
+
+ /* Synchronize */
+- if ( hashbin->hb_type & HB_LOCK ) {
+- spin_lock_irqsave_nested(&hashbin->hb_spinlock, flags,
+- hashbin_lock_depth++);
+- }
++ if (hashbin->hb_type & HB_LOCK)
++ spin_lock_irqsave(&hashbin->hb_spinlock, flags);
+
+ /*
+ * Free the entries in the hashbin, TODO: use hashbin_clear when
+ * it has been shown to work
+ */
+ for (i = 0; i < HASHBIN_SIZE; i ++ ) {
+- queue = dequeue_first((irda_queue_t**) &hashbin->hb_queue[i]);
+- while (queue ) {
+- if (free_func)
+- (*free_func)(queue);
+- queue = dequeue_first(
+- (irda_queue_t**) &hashbin->hb_queue[i]);
++ while (1) {
++ queue = dequeue_first((irda_queue_t**) &hashbin->hb_queue[i]);
++
++ if (!queue)
++ break;
++
++ if (free_func) {
++ if (hashbin->hb_type & HB_LOCK)
++ spin_unlock_irqrestore(&hashbin->hb_spinlock, flags);
++ free_func(queue);
++ if (hashbin->hb_type & HB_LOCK)
++ spin_lock_irqsave(&hashbin->hb_spinlock, flags);
++ }
+ }
+ }
+
+@@ -420,12 +422,8 @@ int hashbin_delete( hashbin_t* hashbin, FREE_FUNC free_func)
+ hashbin->magic = ~HB_MAGIC;
+
+ /* Release lock */
+- if ( hashbin->hb_type & HB_LOCK) {
++ if (hashbin->hb_type & HB_LOCK)
+ spin_unlock_irqrestore(&hashbin->hb_spinlock, flags);
+-#ifdef CONFIG_LOCKDEP
+- hashbin_lock_depth--;
+-#endif
+- }
+
+ /*
+ * Free the hashbin structure
+diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
+index 8a1d1542eb2f..0c4de8dd58bf 100644
+--- a/net/l2tp/l2tp_core.c
++++ b/net/l2tp/l2tp_core.c
+@@ -1859,7 +1859,7 @@ static __net_exit void l2tp_exit_net(struct net *net)
+
+ rcu_read_lock_bh();
+ list_for_each_entry_rcu(tunnel, &pn->l2tp_tunnel_list, list) {
+- (void)l2tp_tunnel_delete(tunnel);
++ l2tp_tunnel_delete(tunnel);
+ }
+ rcu_read_unlock_bh();
+ }
+diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
+index 44ee0683b14b..13c5a7ca0482 100644
+--- a/net/l2tp/l2tp_ip.c
++++ b/net/l2tp/l2tp_ip.c
+@@ -381,7 +381,7 @@ static int l2tp_ip_backlog_recv(struct sock *sk, struct sk_buff *skb)
+ drop:
+ IP_INC_STATS(sock_net(sk), IPSTATS_MIB_INDISCARDS);
+ kfree_skb(skb);
+- return -1;
++ return 0;
+ }
+
+ /* Userspace will call sendmsg() on the tunnel socket to send L2TP
+diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
+index 4c0ce67329ca..1e412ad6ced5 100644
+--- a/net/l2tp/l2tp_netlink.c
++++ b/net/l2tp/l2tp_netlink.c
+@@ -285,7 +285,7 @@ static int l2tp_nl_cmd_tunnel_delete(struct sk_buff *skb, struct genl_info *info
+ l2tp_tunnel_notify(&l2tp_nl_family, info,
+ tunnel, L2TP_CMD_TUNNEL_DELETE);
+
+- (void) l2tp_tunnel_delete(tunnel);
++ l2tp_tunnel_delete(tunnel);
+
+ out:
+ return ret;
+diff --git a/net/llc/llc_conn.c b/net/llc/llc_conn.c
+index 81a61fce3afb..841026e02ce8 100644
+--- a/net/llc/llc_conn.c
++++ b/net/llc/llc_conn.c
+@@ -821,7 +821,10 @@ void llc_conn_handler(struct llc_sap *sap, struct sk_buff *skb)
+ * another trick required to cope with how the PROCOM state
+ * machine works. -acme
+ */
++ skb_orphan(skb);
++ sock_hold(sk);
+ skb->sk = sk;
++ skb->destructor = sock_efree;
+ }
+ if (!sock_owned_by_user(sk))
+ llc_conn_rcv(sk, skb);
+diff --git a/net/llc/llc_sap.c b/net/llc/llc_sap.c
+index d0e1e804ebd7..5404d0d195cc 100644
+--- a/net/llc/llc_sap.c
++++ b/net/llc/llc_sap.c
+@@ -290,7 +290,10 @@ static void llc_sap_rcv(struct llc_sap *sap, struct sk_buff *skb,
+
+ ev->type = LLC_SAP_EV_TYPE_PDU;
+ ev->reason = 0;
++ skb_orphan(skb);
++ sock_hold(sk);
+ skb->sk = sk;
++ skb->destructor = sock_efree;
+ llc_sap_state_process(sap, skb);
+ }
+
+diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
+index 48257f17688f..2ce35082a335 100644
+--- a/net/mac80211/mesh.c
++++ b/net/mac80211/mesh.c
+@@ -289,8 +289,6 @@ int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
+ /* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */
+ *pos |= ifmsh->ps_peers_deep_sleep ?
+ IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL : 0x00;
+- *pos++ = 0x00;
+-
+ return 0;
+ }
+
+diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
+index 1f93a5978f2a..398375098efb 100644
+--- a/net/mpls/af_mpls.c
++++ b/net/mpls/af_mpls.c
+@@ -1098,6 +1098,7 @@ static void mpls_net_exit(struct net *net)
+ for (index = 0; index < platform_labels; index++) {
+ struct mpls_route *rt = rtnl_dereference(platform_label[index]);
+ RCU_INIT_POINTER(platform_label[index], NULL);
++ mpls_notify_route(net, index, rt, NULL, NULL);
+ mpls_rt_free(rt);
+ }
+ rtnl_unlock();
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index 4cd7e27e3fc4..7f5d147aff63 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -1447,13 +1447,16 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags)
+ return -EINVAL;
+ }
+
++ mutex_lock(&fanout_mutex);
++
++ err = -EINVAL;
+ if (!po->running)
+- return -EINVAL;
++ goto out;
+
++ err = -EALREADY;
+ if (po->fanout)
+- return -EALREADY;
++ goto out;
+
+- mutex_lock(&fanout_mutex);
+ match = NULL;
+ list_for_each_entry(f, &fanout_list, list) {
+ if (f->id == id &&
+@@ -1509,17 +1512,16 @@ static void fanout_release(struct sock *sk)
+ struct packet_sock *po = pkt_sk(sk);
+ struct packet_fanout *f;
+
+- f = po->fanout;
+- if (!f)
+- return;
+-
+ mutex_lock(&fanout_mutex);
+- po->fanout = NULL;
++ f = po->fanout;
++ if (f) {
++ po->fanout = NULL;
+
+- if (atomic_dec_and_test(&f->sk_ref)) {
+- list_del(&f->list);
+- dev_remove_pack(&f->prot_hook);
+- kfree(f);
++ if (atomic_dec_and_test(&f->sk_ref)) {
++ list_del(&f->list);
++ dev_remove_pack(&f->prot_hook);
++ kfree(f);
++ }
+ }
+ mutex_unlock(&fanout_mutex);
+ }
+@@ -2728,6 +2730,10 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex,
+ if (need_rehook) {
+ if (po->running) {
+ rcu_read_unlock();
++ /* prevents packet_notifier() from calling
++ * register_prot_hook()
++ */
++ po->num = 0;
+ __unregister_prot_hook(sk, true);
+ rcu_read_lock();
+ dev_curr = po->prot_hook.dev;
+@@ -2736,6 +2742,7 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex,
+ dev->ifindex);
+ }
+
++ BUG_ON(po->running);
+ po->num = proto;
+ po->prot_hook.type = proto;
+
+@@ -2779,7 +2786,7 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr,
+ int addr_len)
+ {
+ struct sock *sk = sock->sk;
+- char name[15];
++ char name[sizeof(uaddr->sa_data) + 1];
+
+ /*
+ * Check legality
+@@ -2787,7 +2794,11 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr,
+
+ if (addr_len != sizeof(struct sockaddr))
+ return -EINVAL;
+- strlcpy(name, uaddr->sa_data, sizeof(name));
++ /* uaddr->sa_data comes from the userspace, it's not guaranteed to be
++ * zero-terminated.
++ */
++ memcpy(name, uaddr->sa_data, sizeof(uaddr->sa_data));
++ name[sizeof(uaddr->sa_data)] = 0;
+
+ return packet_do_bind(sk, name, 0, pkt_sk(sk)->num);
+ }
+diff --git a/net/rds/rdma.c b/net/rds/rdma.c
+index 3738b1920c09..612c3050d514 100644
+--- a/net/rds/rdma.c
++++ b/net/rds/rdma.c
+@@ -184,7 +184,7 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
+ long i;
+ int ret;
+
+- if (rs->rs_bound_addr == 0) {
++ if (rs->rs_bound_addr == 0 || !rs->rs_transport) {
+ ret = -ENOTCONN; /* XXX not a great errno */
+ goto out;
+ }
+diff --git a/net/sched/act_api.c b/net/sched/act_api.c
+index f8d9c2a2c451..c9387f62f634 100644
+--- a/net/sched/act_api.c
++++ b/net/sched/act_api.c
+@@ -802,10 +802,8 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
+ goto out_module_put;
+
+ err = a.ops->walk(skb, &dcb, RTM_DELACTION, &a);
+- if (err < 0)
++ if (err <= 0)
+ goto out_module_put;
+- if (err == 0)
+- goto noflush_out;
+
+ nla_nest_end(skb, nest);
+
+@@ -822,7 +820,6 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
+ out_module_put:
+ module_put(a.ops->owner);
+ err_out:
+-noflush_out:
+ kfree_skb(skb);
+ return err;
+ }
+diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c
+index 295d14bd6c67..85e3207d047a 100644
+--- a/net/sched/act_connmark.c
++++ b/net/sched/act_connmark.c
+@@ -105,6 +105,9 @@ static int tcf_connmark_init(struct net *net, struct nlattr *nla,
+ if (ret < 0)
+ return ret;
+
++ if (!tb[TCA_CONNMARK_PARMS])
++ return -EINVAL;
++
+ parm = nla_data(tb[TCA_CONNMARK_PARMS]);
+
+ if (!tcf_hash_check(parm->index, a, bind)) {
+diff --git a/net/sctp/debug.c b/net/sctp/debug.c
+index 95d7b15dad21..e371a0d90068 100644
+--- a/net/sctp/debug.c
++++ b/net/sctp/debug.c
+@@ -166,7 +166,7 @@ static const char *const sctp_timer_tbl[] = {
+ /* Lookup timer debug name. */
+ const char *sctp_tname(const sctp_subtype_t id)
+ {
+- if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
++ if (id.timeout < ARRAY_SIZE(sctp_timer_tbl))
+ return sctp_timer_tbl[id.timeout];
+ return "unknown_timer";
+ }
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index cb7193ed4284..946d1c28f93f 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -82,8 +82,8 @@
+ /* Forward declarations for internal helper functions. */
+ static int sctp_writeable(struct sock *sk);
+ static void sctp_wfree(struct sk_buff *skb);
+-static int sctp_wait_for_sndbuf(struct sctp_association *, long *timeo_p,
+- size_t msg_len);
++static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
++ size_t msg_len, struct sock **orig_sk);
+ static int sctp_wait_for_packet(struct sock *sk, int *err, long *timeo_p);
+ static int sctp_wait_for_connect(struct sctp_association *, long *timeo_p);
+ static int sctp_wait_for_accept(struct sock *sk, long timeo);
+@@ -1947,9 +1947,16 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
+
+ timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT);
+ if (!sctp_wspace(asoc)) {
+- err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len);
+- if (err)
++ /* sk can be changed by peel off when waiting for buf. */
++ err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len, &sk);
++ if (err) {
++ if (err == -ESRCH) {
++ /* asoc is already dead. */
++ new_asoc = NULL;
++ err = -EPIPE;
++ }
+ goto out_free;
++ }
+ }
+
+ /* If an address is passed with the sendto/sendmsg call, it is used
+@@ -6972,7 +6979,7 @@ void sctp_sock_rfree(struct sk_buff *skb)
+
+ /* Helper function to wait for space in the sndbuf. */
+ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
+- size_t msg_len)
++ size_t msg_len, struct sock **orig_sk)
+ {
+ struct sock *sk = asoc->base.sk;
+ int err = 0;
+@@ -6989,10 +6996,11 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
+ for (;;) {
+ prepare_to_wait_exclusive(&asoc->wait, &wait,
+ TASK_INTERRUPTIBLE);
++ if (asoc->base.dead)
++ goto do_dead;
+ if (!*timeo_p)
+ goto do_nonblock;
+- if (sk->sk_err || asoc->state >= SCTP_STATE_SHUTDOWN_PENDING ||
+- asoc->base.dead)
++ if (sk->sk_err || asoc->state >= SCTP_STATE_SHUTDOWN_PENDING)
+ goto do_error;
+ if (signal_pending(current))
+ goto do_interrupted;
+@@ -7006,11 +7014,17 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
+ current_timeo = schedule_timeout(current_timeo);
+ BUG_ON(sk != asoc->base.sk);
+ lock_sock(sk);
++ if (sk != asoc->base.sk) {
++ release_sock(sk);
++ sk = asoc->base.sk;
++ lock_sock(sk);
++ }
+
+ *timeo_p = current_timeo;
+ }
+
+ out:
++ *orig_sk = sk;
+ finish_wait(&asoc->wait, &wait);
+
+ /* Release the association's refcnt. */
+@@ -7018,6 +7032,10 @@ out:
+
+ return err;
+
++do_dead:
++ err = -ESRCH;
++ goto out;
++
+ do_error:
+ err = -EPIPE;
+ goto out;
+diff --git a/net/socket.c b/net/socket.c
+index e66e4f357506..12d681c1b66d 100644
+--- a/net/socket.c
++++ b/net/socket.c
+@@ -1706,6 +1706,7 @@ SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
+ /* We assume all kernel code knows the size of sockaddr_storage */
+ msg.msg_namelen = 0;
+ msg.msg_iocb = NULL;
++ msg.msg_flags = 0;
+ if (sock->file->f_flags & O_NONBLOCK)
+ flags |= MSG_DONTWAIT;
+ err = sock_recvmsg(sock, &msg, iov_iter_count(&msg.msg_iter), flags);
+@@ -2192,8 +2193,10 @@ int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
+ return err;
+
+ err = sock_error(sock->sk);
+- if (err)
++ if (err) {
++ datagrams = err;
+ goto out_put;
++ }
+
+ entry = mmsg;
+ compat_entry = (struct compat_mmsghdr __user *)mmsg;
+diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
+index 337ca851a350..d1907b3cf832 100644
+--- a/net/sunrpc/sched.c
++++ b/net/sunrpc/sched.c
+@@ -273,10 +273,9 @@ static inline void rpc_task_set_debuginfo(struct rpc_task *task)
+
+ static void rpc_set_active(struct rpc_task *task)
+ {
+- trace_rpc_task_begin(task->tk_client, task, NULL);
+-
+ rpc_task_set_debuginfo(task);
+ set_bit(RPC_TASK_ACTIVE, &task->tk_runstate);
++ trace_rpc_task_begin(task->tk_client, task, NULL);
+ }
+
+ /*
+diff --git a/net/tipc/server.c b/net/tipc/server.c
+index d0d619813684..7c52cb5781ab 100644
+--- a/net/tipc/server.c
++++ b/net/tipc/server.c
+@@ -614,14 +614,12 @@ int tipc_server_start(struct tipc_server *s)
+ void tipc_server_stop(struct tipc_server *s)
+ {
+ struct tipc_conn *con;
+- int total = 0;
+ int id;
+
+ spin_lock_bh(&s->idr_lock);
+- for (id = 0; total < s->idr_in_use; id++) {
++ for (id = 0; s->idr_in_use; id++) {
+ con = idr_find(&s->conn_idr, id);
+ if (con) {
+- total++;
+ spin_unlock_bh(&s->idr_lock);
+ tipc_close_conn(con);
+ spin_lock_bh(&s->idr_lock);
+diff --git a/net/unix/garbage.c b/net/unix/garbage.c
+index 6a0d48525fcf..c36757e72844 100644
+--- a/net/unix/garbage.c
++++ b/net/unix/garbage.c
+@@ -146,6 +146,7 @@ void unix_notinflight(struct user_struct *user, struct file *fp)
+ if (s) {
+ struct unix_sock *u = unix_sk(s);
+
++ BUG_ON(!atomic_long_read(&u->inflight));
+ BUG_ON(list_empty(&u->link));
+
+ if (atomic_long_dec_and_test(&u->inflight))
+@@ -341,6 +342,14 @@ void unix_gc(void)
+ }
+ list_del(&cursor);
+
++ /* Now gc_candidates contains only garbage. Restore original
++ * inflight counters for these as well, and remove the skbuffs
++ * which are creating the cycle(s).
++ */
++ skb_queue_head_init(&hitlist);
++ list_for_each_entry(u, &gc_candidates, link)
++ scan_children(&u->sk, inc_inflight, &hitlist);
++
+ /* not_cycle_list contains those sockets which do not make up a
+ * cycle. Restore these to the inflight list.
+ */
+@@ -350,14 +359,6 @@ void unix_gc(void)
+ list_move_tail(&u->link, &gc_inflight_list);
+ }
+
+- /* Now gc_candidates contains only garbage. Restore original
+- * inflight counters for these as well, and remove the skbuffs
+- * which are creating the cycle(s).
+- */
+- skb_queue_head_init(&hitlist);
+- list_for_each_entry(u, &gc_candidates, link)
+- scan_children(&u->sk, inc_inflight, &hitlist);
+-
+ spin_unlock(&unix_gc_lock);
+
+ /* Here we are. Hitlist is filled. Die. */
+diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
+index 04a025218d13..7306683a7207 100644
+--- a/net/xfrm/xfrm_policy.c
++++ b/net/xfrm/xfrm_policy.c
+@@ -1352,6 +1352,7 @@ static struct xfrm_policy *clone_policy(const struct xfrm_policy *old, int dir)
+ newp->xfrm_nr = old->xfrm_nr;
+ newp->index = old->index;
+ newp->type = old->type;
++ newp->family = old->family;
+ memcpy(newp->xfrm_vec, old->xfrm_vec,
+ newp->xfrm_nr*sizeof(struct xfrm_tmpl));
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
+@@ -2963,6 +2964,11 @@ static int __net_init xfrm_net_init(struct net *net)
+ {
+ int rv;
+
++ /* Initialize the per-net locks here */
++ spin_lock_init(&net->xfrm.xfrm_state_lock);
++ rwlock_init(&net->xfrm.xfrm_policy_lock);
++ mutex_init(&net->xfrm.xfrm_cfg_mutex);
++
+ rv = xfrm_statistics_init(net);
+ if (rv < 0)
+ goto out_statistics;
+@@ -2979,11 +2985,6 @@ static int __net_init xfrm_net_init(struct net *net)
+ if (rv < 0)
+ goto out;
+
+- /* Initialize the per-net locks here */
+- spin_lock_init(&net->xfrm.xfrm_state_lock);
+- rwlock_init(&net->xfrm.xfrm_policy_lock);
+- mutex_init(&net->xfrm.xfrm_cfg_mutex);
+-
+ return 0;
+
+ out:
+diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
+index 18d9cf2eb648..30593cadd428 100644
+--- a/net/xfrm/xfrm_user.c
++++ b/net/xfrm/xfrm_user.c
+@@ -386,7 +386,14 @@ static inline int xfrm_replay_verify_len(struct xfrm_replay_state_esn *replay_es
+ up = nla_data(rp);
+ ulen = xfrm_replay_state_esn_len(up);
+
+- if (nla_len(rp) < ulen || xfrm_replay_state_esn_len(replay_esn) != ulen)
++ /* Check the overall length and the internal bitmap length to avoid
++ * potential overflow. */
++ if (nla_len(rp) < ulen ||
++ xfrm_replay_state_esn_len(replay_esn) != ulen ||
++ replay_esn->bmp_len != up->bmp_len)
++ return -EINVAL;
++
++ if (up->replay_window > up->bmp_len * sizeof(__u32) * 8)
+ return -EINVAL;
+
+ return 0;
+diff --git a/scripts/module-common.lds b/scripts/module-common.lds
+index 73a2c7da0e55..53234e85192a 100644
+--- a/scripts/module-common.lds
++++ b/scripts/module-common.lds
+@@ -19,4 +19,6 @@ SECTIONS {
+
+ . = ALIGN(8);
+ .init_array 0 : { *(SORT(.init_array.*)) *(.init_array) }
++
++ __jump_table 0 : ALIGN(8) { KEEP(*(__jump_table)) }
+ }
+diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
+index eeee00dce729..cf837338a85e 100644
+--- a/security/integrity/ima/ima_main.c
++++ b/security/integrity/ima/ima_main.c
+@@ -52,6 +52,8 @@ static int __init hash_setup(char *str)
+ ima_hash_algo = HASH_ALGO_SHA1;
+ else if (strncmp(str, "md5", 3) == 0)
+ ima_hash_algo = HASH_ALGO_MD5;
++ else
++ return 1;
+ goto out;
+ }
+
+@@ -61,6 +63,8 @@ static int __init hash_setup(char *str)
+ break;
+ }
+ }
++ if (i == HASH_ALGO__LAST)
++ return 1;
+ out:
+ hash_setup_done = 1;
+ return 1;
+diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
+index a2d29cca16c6..c804189d0d03 100644
+--- a/security/keys/keyctl.c
++++ b/security/keys/keyctl.c
+@@ -99,7 +99,7 @@ SYSCALL_DEFINE5(add_key, const char __user *, _type,
+ payload = NULL;
+
+ vm = false;
+- if (_payload) {
++ if (plen) {
+ ret = -ENOMEM;
+ payload = kmalloc(plen, GFP_KERNEL | __GFP_NOWARN);
+ if (!payload) {
+@@ -333,7 +333,7 @@ long keyctl_update_key(key_serial_t id,
+
+ /* pull the payload in if one was supplied */
+ payload = NULL;
+- if (_payload) {
++ if (plen) {
+ ret = -ENOMEM;
+ payload = kmalloc(plen, GFP_KERNEL);
+ if (!payload)
+diff --git a/sound/core/pcm.c b/sound/core/pcm.c
+index f6e7fdd354de..7c60cb289719 100644
+--- a/sound/core/pcm.c
++++ b/sound/core/pcm.c
+@@ -149,7 +149,9 @@ static int snd_pcm_control_ioctl(struct snd_card *card,
+ err = -ENXIO;
+ goto _error;
+ }
++ mutex_lock(&pcm->open_mutex);
+ err = snd_pcm_info_user(substream, info);
++ mutex_unlock(&pcm->open_mutex);
+ _error:
+ mutex_unlock(®ister_mutex);
+ return err;
+diff --git a/sound/core/seq/seq_timer.c b/sound/core/seq/seq_timer.c
+index a2468f1101d1..0e6210000fa9 100644
+--- a/sound/core/seq/seq_timer.c
++++ b/sound/core/seq/seq_timer.c
+@@ -355,7 +355,7 @@ static int initialize_timer(struct snd_seq_timer *tmr)
+ unsigned long freq;
+
+ t = tmr->timeri->timer;
+- if (snd_BUG_ON(!t))
++ if (!t)
+ return -EINVAL;
+
+ freq = tmr->preferred_resolution;
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index 3ebfaa527825..2ee449fbe55f 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -203,6 +203,10 @@ static int snd_usb_copy_string_desc(struct mixer_build *state,
+ int index, char *buf, int maxlen)
+ {
+ int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
++
++ if (len < 0)
++ return 0;
++
+ buf[len] = 0;
+ return len;
+ }
+@@ -2096,13 +2100,14 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid,
+ if (len)
+ ;
+ else if (nameid)
+- snd_usb_copy_string_desc(state, nameid, kctl->id.name,
++ len = snd_usb_copy_string_desc(state, nameid, kctl->id.name,
+ sizeof(kctl->id.name));
+- else {
++ else
+ len = get_term_name(state, &state->oterm,
+ kctl->id.name, sizeof(kctl->id.name), 0);
+- if (!len)
+- strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
++
++ if (!len) {
++ strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
+
+ if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR)
+ append_ctl_name(kctl, " Clock Source");
+diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
+index 408bb076a234..db4a1eb5af7d 100644
+--- a/tools/hv/hv_kvp_daemon.c
++++ b/tools/hv/hv_kvp_daemon.c
+@@ -195,11 +195,14 @@ static void kvp_update_mem_state(int pool)
+ for (;;) {
+ readp = &record[records_read];
+ records_read += fread(readp, sizeof(struct kvp_record),
+- ENTRIES_PER_BLOCK * num_blocks,
+- filep);
++ ENTRIES_PER_BLOCK * num_blocks - records_read,
++ filep);
+
+ if (ferror(filep)) {
+- syslog(LOG_ERR, "Failed to read file, pool: %d", pool);
++ syslog(LOG_ERR,
++ "Failed to read file, pool: %d; error: %d %s",
++ pool, errno, strerror(errno));
++ kvp_release_lock(pool);
+ exit(EXIT_FAILURE);
+ }
+
+@@ -212,6 +215,7 @@ static void kvp_update_mem_state(int pool)
+
+ if (record == NULL) {
+ syslog(LOG_ERR, "malloc failed");
++ kvp_release_lock(pool);
+ exit(EXIT_FAILURE);
+ }
+ continue;
+@@ -226,15 +230,11 @@ static void kvp_update_mem_state(int pool)
+ fclose(filep);
+ kvp_release_lock(pool);
+ }
++
+ static int kvp_file_init(void)
+ {
+ int fd;
+- FILE *filep;
+- size_t records_read;
+ char *fname;
+- struct kvp_record *record;
+- struct kvp_record *readp;
+- int num_blocks;
+ int i;
+ int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK;
+
+@@ -248,61 +248,19 @@ static int kvp_file_init(void)
+
+ for (i = 0; i < KVP_POOL_COUNT; i++) {
+ fname = kvp_file_info[i].fname;
+- records_read = 0;
+- num_blocks = 1;
+ sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i);
+ fd = open(fname, O_RDWR | O_CREAT | O_CLOEXEC, 0644 /* rw-r--r-- */);
+
+ if (fd == -1)
+ return 1;
+
+-
+- filep = fopen(fname, "re");
+- if (!filep) {
+- close(fd);
+- return 1;
+- }
+-
+- record = malloc(alloc_unit * num_blocks);
+- if (record == NULL) {
+- fclose(filep);
+- close(fd);
+- return 1;
+- }
+- for (;;) {
+- readp = &record[records_read];
+- records_read += fread(readp, sizeof(struct kvp_record),
+- ENTRIES_PER_BLOCK,
+- filep);
+-
+- if (ferror(filep)) {
+- syslog(LOG_ERR, "Failed to read file, pool: %d",
+- i);
+- exit(EXIT_FAILURE);
+- }
+-
+- if (!feof(filep)) {
+- /*
+- * We have more data to read.
+- */
+- num_blocks++;
+- record = realloc(record, alloc_unit *
+- num_blocks);
+- if (record == NULL) {
+- fclose(filep);
+- close(fd);
+- return 1;
+- }
+- continue;
+- }
+- break;
+- }
+ kvp_file_info[i].fd = fd;
+- kvp_file_info[i].num_blocks = num_blocks;
+- kvp_file_info[i].records = record;
+- kvp_file_info[i].num_records = records_read;
+- fclose(filep);
+-
++ kvp_file_info[i].num_blocks = 1;
++ kvp_file_info[i].records = malloc(alloc_unit);
++ if (kvp_file_info[i].records == NULL)
++ return 1;
++ kvp_file_info[i].num_records = 0;
++ kvp_update_mem_state(i);
+ }
+
+ return 0;
+diff --git a/tools/include/linux/log2.h b/tools/include/linux/log2.h
+index 41446668ccce..d5677d39c1e4 100644
+--- a/tools/include/linux/log2.h
++++ b/tools/include/linux/log2.h
+@@ -12,12 +12,6 @@
+ #ifndef _TOOLS_LINUX_LOG2_H
+ #define _TOOLS_LINUX_LOG2_H
+
+-/*
+- * deal with unrepresentable constant logarithms
+- */
+-extern __attribute__((const, noreturn))
+-int ____ilog2_NaN(void);
+-
+ /*
+ * non-constant log of base 2 calculators
+ * - the arch may override these in asm/bitops.h if they can be implemented
+@@ -78,7 +72,7 @@ unsigned long __rounddown_pow_of_two(unsigned long n)
+ #define ilog2(n) \
+ ( \
+ __builtin_constant_p(n) ? ( \
+- (n) < 1 ? ____ilog2_NaN() : \
++ (n) < 2 ? 0 : \
+ (n) & (1ULL << 63) ? 63 : \
+ (n) & (1ULL << 62) ? 62 : \
+ (n) & (1ULL << 61) ? 61 : \
+@@ -141,10 +135,7 @@ unsigned long __rounddown_pow_of_two(unsigned long n)
+ (n) & (1ULL << 4) ? 4 : \
+ (n) & (1ULL << 3) ? 3 : \
+ (n) & (1ULL << 2) ? 2 : \
+- (n) & (1ULL << 1) ? 1 : \
+- (n) & (1ULL << 0) ? 0 : \
+- ____ilog2_NaN() \
+- ) : \
++ 1 ) : \
+ (sizeof(n) <= 4) ? \
+ __ilog2_u32(n) : \
+ __ilog2_u64(n) \
+diff --git a/tools/perf/tests/attr.c b/tools/perf/tests/attr.c
+index 2dfc9ad0e6f2..8e92b56c610a 100644
+--- a/tools/perf/tests/attr.c
++++ b/tools/perf/tests/attr.c
+@@ -150,7 +150,7 @@ static int run_dir(const char *d, const char *perf)
+ snprintf(cmd, 3*PATH_MAX, PYTHON " %s/attr.py -d %s/attr/ -p %s %.*s",
+ d, d, perf, vcnt, v);
+
+- return system(cmd);
++ return system(cmd) ? TEST_FAIL : TEST_OK;
+ }
+
+ int test__attr(void)
+diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
+index 99378a5c57a7..28ee003beee1 100644
+--- a/tools/perf/util/symbol.c
++++ b/tools/perf/util/symbol.c
+@@ -194,7 +194,7 @@ void symbols__fixup_end(struct rb_root *symbols)
+
+ /* Last entry */
+ if (curr->end == curr->start)
+- curr->end = roundup(curr->start, 4096);
++ curr->end = roundup(curr->start, 4096) + 4096;
+ }
+
+ void __map_groups__fixup_end(struct map_groups *mg, enum map_type type)
+diff --git a/tools/testing/selftests/powerpc/harness.c b/tools/testing/selftests/powerpc/harness.c
+index f7997affd143..f45cee80c58b 100644
+--- a/tools/testing/selftests/powerpc/harness.c
++++ b/tools/testing/selftests/powerpc/harness.c
+@@ -109,9 +109,11 @@ int test_harness(int (test_function)(void), char *name)
+
+ rc = run_test(test_function, name);
+
+- if (rc == MAGIC_SKIP_RETURN_VALUE)
++ if (rc == MAGIC_SKIP_RETURN_VALUE) {
+ test_skip(name);
+- else
++ /* so that skipped test is not marked as failed */
++ rc = 0;
++ } else
+ test_finish(name, rc);
+
+ return rc;
+diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
+index 79db45336e3a..962bf7371cee 100644
+--- a/virt/kvm/eventfd.c
++++ b/virt/kvm/eventfd.c
+@@ -862,7 +862,8 @@ kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,
+ continue;
+
+ kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);
+- kvm->buses[bus_idx]->ioeventfd_count--;
++ if (kvm->buses[bus_idx])
++ kvm->buses[bus_idx]->ioeventfd_count--;
+ ioeventfd_release(p);
+ ret = 0;
+ break;
+diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
+index f9746f29f870..457719410ab4 100644
+--- a/virt/kvm/kvm_main.c
++++ b/virt/kvm/kvm_main.c
+@@ -600,8 +600,11 @@ static void kvm_destroy_vm(struct kvm *kvm)
+ list_del(&kvm->vm_list);
+ spin_unlock(&kvm_lock);
+ kvm_free_irq_routing(kvm);
+- for (i = 0; i < KVM_NR_BUSES; i++)
+- kvm_io_bus_destroy(kvm->buses[i]);
++ for (i = 0; i < KVM_NR_BUSES; i++) {
++ if (kvm->buses[i])
++ kvm_io_bus_destroy(kvm->buses[i]);
++ kvm->buses[i] = NULL;
++ }
+ kvm_coalesced_mmio_free(kvm);
+ #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
+ mmu_notifier_unregister(&kvm->mmu_notifier, kvm->mm);
+@@ -3038,6 +3041,8 @@ int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
+ };
+
+ bus = srcu_dereference(vcpu->kvm->buses[bus_idx], &vcpu->kvm->srcu);
++ if (!bus)
++ return -ENOMEM;
+ r = __kvm_io_bus_write(vcpu, bus, &range, val);
+ return r < 0 ? r : 0;
+ }
+@@ -3055,6 +3060,8 @@ int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx,
+ };
+
+ bus = srcu_dereference(vcpu->kvm->buses[bus_idx], &vcpu->kvm->srcu);
++ if (!bus)
++ return -ENOMEM;
+
+ /* First try the device referenced by cookie. */
+ if ((cookie >= 0) && (cookie < bus->dev_count) &&
+@@ -3105,6 +3112,8 @@ int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
+ };
+
+ bus = srcu_dereference(vcpu->kvm->buses[bus_idx], &vcpu->kvm->srcu);
++ if (!bus)
++ return -ENOMEM;
+ r = __kvm_io_bus_read(vcpu, bus, &range, val);
+ return r < 0 ? r : 0;
+ }
+@@ -3117,6 +3126,9 @@ int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
+ struct kvm_io_bus *new_bus, *bus;
+
+ bus = kvm->buses[bus_idx];
++ if (!bus)
++ return -ENOMEM;
++
+ /* exclude ioeventfd which is limited by maximum fd */
+ if (bus->dev_count - bus->ioeventfd_count > NR_IOBUS_DEVS - 1)
+ return -ENOSPC;
+@@ -3136,37 +3148,41 @@ int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
+ }
+
+ /* Caller must hold slots_lock. */
+-int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
+- struct kvm_io_device *dev)
++void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
++ struct kvm_io_device *dev)
+ {
+- int i, r;
++ int i;
+ struct kvm_io_bus *new_bus, *bus;
+
+ bus = kvm->buses[bus_idx];
+- r = -ENOENT;
++ if (!bus)
++ return;
++
+ for (i = 0; i < bus->dev_count; i++)
+ if (bus->range[i].dev == dev) {
+- r = 0;
+ break;
+ }
+
+- if (r)
+- return r;
++ if (i == bus->dev_count)
++ return;
+
+ new_bus = kzalloc(sizeof(*bus) + ((bus->dev_count - 1) *
+ sizeof(struct kvm_io_range)), GFP_KERNEL);
+- if (!new_bus)
+- return -ENOMEM;
++ if (!new_bus) {
++ pr_err("kvm: failed to shrink bus, removing it completely\n");
++ goto broken;
++ }
+
+ memcpy(new_bus, bus, sizeof(*bus) + i * sizeof(struct kvm_io_range));
+ new_bus->dev_count--;
+ memcpy(new_bus->range + i, bus->range + i + 1,
+ (new_bus->dev_count - i) * sizeof(struct kvm_io_range));
+
++broken:
+ rcu_assign_pointer(kvm->buses[bus_idx], new_bus);
+ synchronize_srcu_expedited(&kvm->srcu);
+ kfree(bus);
+- return r;
++ return;
+ }
+
+ static struct notifier_block kvm_cpu_notifier = {
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-12-15 20:22 Alice Ferrazzi
0 siblings, 0 replies; 71+ messages in thread
From: Alice Ferrazzi @ 2017-12-15 20:22 UTC (permalink / raw
To: gentoo-commits
commit: 4f5e8935a83b7b615e64287b1ba50633ac6e39b1
Author: Alice Ferrazzi <alicef <AT> gentoo <DOT> org>
AuthorDate: Fri Dec 15 20:22:14 2017 +0000
Commit: Alice Ferrazzi <alicef <AT> gentoo <DOT> org>
CommitDate: Fri Dec 15 20:22:14 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=4f5e8935
linux kernel 4.1.48
0000_README | 4 +
1047_linux-4.1.48.patch | 3434 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 3438 insertions(+)
diff --git a/0000_README b/0000_README
index b37932b..1b3166c 100644
--- a/0000_README
+++ b/0000_README
@@ -231,6 +231,10 @@ Patch: 1046_linux-4.1.47.patch
From: http://www.kernel.org
Desc: Linux 4.1.47
+Patch: 1047_linux-4.1.48.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.48
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1047_linux-4.1.48.patch b/1047_linux-4.1.48.patch
new file mode 100644
index 0000000..bf1334d
--- /dev/null
+++ b/1047_linux-4.1.48.patch
@@ -0,0 +1,3434 @@
+diff --git a/Makefile b/Makefile
+index c730c9719f6d..97edf556bfe4 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 47
++SUBLEVEL = 48
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c
+index 9fe8e241335c..e1f6f0daa847 100644
+--- a/arch/arm/mm/dump.c
++++ b/arch/arm/mm/dump.c
+@@ -126,8 +126,8 @@ static const struct prot_bits section_bits[] = {
+ .val = PMD_SECT_USER,
+ .set = "USR",
+ }, {
+- .mask = L_PMD_SECT_RDONLY,
+- .val = L_PMD_SECT_RDONLY,
++ .mask = L_PMD_SECT_RDONLY | PMD_SECT_AP2,
++ .val = L_PMD_SECT_RDONLY | PMD_SECT_AP2,
+ .set = "ro",
+ .clear = "RW",
+ #elif __LINUX_ARM_ARCH__ >= 6
+diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
+index be92fa0f2f35..10058c00ddd9 100644
+--- a/arch/arm/mm/init.c
++++ b/arch/arm/mm/init.c
+@@ -609,8 +609,8 @@ static struct section_perm ro_perms[] = {
+ .start = (unsigned long)_stext,
+ .end = (unsigned long)__init_begin,
+ #ifdef CONFIG_ARM_LPAE
+- .mask = ~L_PMD_SECT_RDONLY,
+- .prot = L_PMD_SECT_RDONLY,
++ .mask = ~(L_PMD_SECT_RDONLY | PMD_SECT_AP2),
++ .prot = L_PMD_SECT_RDONLY | PMD_SECT_AP2,
+ #else
+ .mask = ~(PMD_SECT_APX | PMD_SECT_AP_WRITE),
+ .prot = PMD_SECT_APX | PMD_SECT_AP_WRITE,
+diff --git a/arch/mips/bcm47xx/leds.c b/arch/mips/bcm47xx/leds.c
+index 0e4ade342333..5c2e12923327 100644
+--- a/arch/mips/bcm47xx/leds.c
++++ b/arch/mips/bcm47xx/leds.c
+@@ -330,7 +330,7 @@ bcm47xx_leds_linksys_wrt54g3gv2[] __initconst = {
+ /* Verified on: WRT54GS V1.0 */
+ static const struct gpio_led
+ bcm47xx_leds_linksys_wrt54g_type_0101[] __initconst = {
+- BCM47XX_GPIO_LED(0, "green", "wlan", 0, LEDS_GPIO_DEFSTATE_OFF),
++ BCM47XX_GPIO_LED(0, "green", "wlan", 1, LEDS_GPIO_DEFSTATE_OFF),
+ BCM47XX_GPIO_LED(1, "green", "power", 0, LEDS_GPIO_DEFSTATE_ON),
+ BCM47XX_GPIO_LED(7, "green", "dmz", 1, LEDS_GPIO_DEFSTATE_OFF),
+ };
+diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
+index 5c3aa41a162f..81a13fd56d13 100644
+--- a/arch/mips/kernel/ptrace.c
++++ b/arch/mips/kernel/ptrace.c
+@@ -561,6 +561,19 @@ static const struct user_regset_view user_mips64_view = {
+ .n = ARRAY_SIZE(mips64_regsets),
+ };
+
++#ifdef CONFIG_MIPS32_N32
++
++static const struct user_regset_view user_mipsn32_view = {
++ .name = "mipsn32",
++ .e_flags = EF_MIPS_ABI2,
++ .e_machine = ELF_ARCH,
++ .ei_osabi = ELF_OSABI,
++ .regsets = mips64_regsets,
++ .n = ARRAY_SIZE(mips64_regsets),
++};
++
++#endif /* CONFIG_MIPS32_N32 */
++
+ #endif /* CONFIG_64BIT */
+
+ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
+@@ -571,6 +584,10 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
+ #ifdef CONFIG_MIPS32_O32
+ if (test_tsk_thread_flag(task, TIF_32BIT_REGS))
+ return &user_mips_view;
++#endif
++#ifdef CONFIG_MIPS32_N32
++ if (test_tsk_thread_flag(task, TIF_32BIT_ADDR))
++ return &user_mipsn32_view;
+ #endif
+ return &user_mips64_view;
+ #endif
+diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
+index 51e77841f9f6..2734f6a4857d 100644
+--- a/arch/mips/kernel/setup.c
++++ b/arch/mips/kernel/setup.c
+@@ -147,35 +147,6 @@ void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_add
+ add_memory_region(start, size, BOOT_MEM_RAM);
+ }
+
+-bool __init memory_region_available(phys_addr_t start, phys_addr_t size)
+-{
+- int i;
+- bool in_ram = false, free = true;
+-
+- for (i = 0; i < boot_mem_map.nr_map; i++) {
+- phys_addr_t start_, end_;
+-
+- start_ = boot_mem_map.map[i].addr;
+- end_ = boot_mem_map.map[i].addr + boot_mem_map.map[i].size;
+-
+- switch (boot_mem_map.map[i].type) {
+- case BOOT_MEM_RAM:
+- if (start >= start_ && start + size <= end_)
+- in_ram = true;
+- break;
+- case BOOT_MEM_RESERVED:
+- if ((start >= start_ && start < end_) ||
+- (start < start_ && start + size >= start_))
+- free = false;
+- break;
+- default:
+- continue;
+- }
+- }
+-
+- return in_ram && free;
+-}
+-
+ static void __init print_memory_map(void)
+ {
+ int i;
+@@ -324,19 +295,11 @@ static void __init bootmem_init(void)
+
+ #else /* !CONFIG_SGI_IP27 */
+
+-static unsigned long __init bootmap_bytes(unsigned long pages)
+-{
+- unsigned long bytes = DIV_ROUND_UP(pages, 8);
+-
+- return ALIGN(bytes, sizeof(long));
+-}
+-
+ static void __init bootmem_init(void)
+ {
+ unsigned long reserved_end;
+ unsigned long mapstart = ~0UL;
+ unsigned long bootmap_size;
+- bool bootmap_valid = false;
+ int i;
+
+ /*
+@@ -411,43 +374,12 @@ static void __init bootmem_init(void)
+ mapstart = max(mapstart, (unsigned long)PFN_UP(__pa(initrd_end)));
+ #endif
+
+- /*
+- * check that mapstart doesn't overlap with any of
+- * memory regions that have been reserved through eg. DTB
+- */
+- bootmap_size = bootmap_bytes(max_low_pfn - min_low_pfn);
+-
+- bootmap_valid = memory_region_available(PFN_PHYS(mapstart),
+- bootmap_size);
+- for (i = 0; i < boot_mem_map.nr_map && !bootmap_valid; i++) {
+- unsigned long mapstart_addr;
+-
+- switch (boot_mem_map.map[i].type) {
+- case BOOT_MEM_RESERVED:
+- mapstart_addr = PFN_ALIGN(boot_mem_map.map[i].addr +
+- boot_mem_map.map[i].size);
+- if (PHYS_PFN(mapstart_addr) < mapstart)
+- break;
+-
+- bootmap_valid = memory_region_available(mapstart_addr,
+- bootmap_size);
+- if (bootmap_valid)
+- mapstart = PHYS_PFN(mapstart_addr);
+- break;
+- default:
+- break;
+- }
+- }
+-
+- if (!bootmap_valid)
+- panic("No memory area to place a bootmap bitmap");
+-
+ /*
+ * Initialize the boot-time allocator with low memory only.
+ */
+- if (bootmap_size != init_bootmem_node(NODE_DATA(0), mapstart,
+- min_low_pfn, max_low_pfn))
+- panic("Unexpected memory size required for bootmap");
++ bootmap_size = init_bootmem_node(NODE_DATA(0), mapstart,
++ min_low_pfn, max_low_pfn);
++
+
+ for (i = 0; i < boot_mem_map.nr_map; i++) {
+ unsigned long start, end;
+diff --git a/arch/mips/ralink/mt7620.c b/arch/mips/ralink/mt7620.c
+index c57215a66181..e916b14234e6 100644
+--- a/arch/mips/ralink/mt7620.c
++++ b/arch/mips/ralink/mt7620.c
+@@ -132,8 +132,8 @@ static struct rt2880_pmx_func i2c_grp_mt7628[] = {
+ FUNC("i2c", 0, 4, 2),
+ };
+
+-static struct rt2880_pmx_func refclk_grp_mt7628[] = { FUNC("reclk", 0, 36, 1) };
+-static struct rt2880_pmx_func perst_grp_mt7628[] = { FUNC("perst", 0, 37, 1) };
++static struct rt2880_pmx_func refclk_grp_mt7628[] = { FUNC("refclk", 0, 37, 1) };
++static struct rt2880_pmx_func perst_grp_mt7628[] = { FUNC("perst", 0, 36, 1) };
+ static struct rt2880_pmx_func wdt_grp_mt7628[] = { FUNC("wdt", 0, 38, 1) };
+ static struct rt2880_pmx_func spi_grp_mt7628[] = { FUNC("spi", 0, 7, 4) };
+
+diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
+index 95f090fe385a..196395a0ac91 100644
+--- a/arch/parisc/kernel/syscall.S
++++ b/arch/parisc/kernel/syscall.S
+@@ -688,15 +688,15 @@ cas_action:
+ /* ELF32 Process entry path */
+ lws_compare_and_swap_2:
+ #ifdef CONFIG_64BIT
+- /* Clip the input registers */
++ /* Clip the input registers. We don't need to clip %r23 as we
++ only use it for word operations */
+ depdi 0, 31, 32, %r26
+ depdi 0, 31, 32, %r25
+ depdi 0, 31, 32, %r24
+- depdi 0, 31, 32, %r23
+ #endif
+
+ /* Check the validity of the size pointer */
+- subi,>>= 4, %r23, %r0
++ subi,>>= 3, %r23, %r0
+ b,n lws_exit_nosys
+
+ /* Jump to the functions which will load the old and new values into
+diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
+index cf8c7e4e0b21..984a54c85952 100644
+--- a/arch/powerpc/kernel/signal.c
++++ b/arch/powerpc/kernel/signal.c
+@@ -102,7 +102,7 @@ static void check_syscall_restart(struct pt_regs *regs, struct k_sigaction *ka,
+ static void do_signal(struct pt_regs *regs)
+ {
+ sigset_t *oldset = sigmask_to_save();
+- struct ksignal ksig;
++ struct ksignal ksig = { .sig = 0 };
+ int ret;
+ int is32 = is_32bit_task();
+
+diff --git a/arch/s390/include/asm/asm-prototypes.h b/arch/s390/include/asm/asm-prototypes.h
+new file mode 100644
+index 000000000000..2c3413b0ca52
+--- /dev/null
++++ b/arch/s390/include/asm/asm-prototypes.h
+@@ -0,0 +1,8 @@
++#ifndef _ASM_S390_PROTOTYPES_H
++
++#include <linux/kvm_host.h>
++#include <linux/ftrace.h>
++#include <asm/fpu/api.h>
++#include <asm-generic/asm-prototypes.h>
++
++#endif /* _ASM_S390_PROTOTYPES_H */
+diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
+index 8140d10c6785..d7c277664ec4 100644
+--- a/arch/s390/kernel/dis.c
++++ b/arch/s390/kernel/dis.c
+@@ -1549,6 +1549,7 @@ static struct s390_insn opcode_e7[] = {
+ { "vfsq", 0xce, INSTR_VRR_VV000MM },
+ { "vfs", 0xe2, INSTR_VRR_VVV00MM },
+ { "vftci", 0x4a, INSTR_VRI_VVIMM },
++ { "", 0, INSTR_INVALID }
+ };
+
+ static struct s390_insn opcode_eb[] = {
+@@ -1954,7 +1955,7 @@ void show_code(struct pt_regs *regs)
+ {
+ char *mode = user_mode(regs) ? "User" : "Krnl";
+ unsigned char code[64];
+- char buffer[64], *ptr;
++ char buffer[128], *ptr;
+ mm_segment_t old_fs;
+ unsigned long addr;
+ int start, end, opsize, hops, i;
+@@ -2017,7 +2018,7 @@ void show_code(struct pt_regs *regs)
+ start += opsize;
+ printk(buffer);
+ ptr = buffer;
+- ptr += sprintf(ptr, "\n ");
++ ptr += sprintf(ptr, "\n\t ");
+ hops++;
+ }
+ printk("\n");
+diff --git a/arch/s390/kernel/runtime_instr.c b/arch/s390/kernel/runtime_instr.c
+index 26b4ae96fdd7..ddbec1054f75 100644
+--- a/arch/s390/kernel/runtime_instr.c
++++ b/arch/s390/kernel/runtime_instr.c
+@@ -53,12 +53,14 @@ void exit_thread_runtime_instr(void)
+ {
+ struct task_struct *task = current;
+
++ preempt_disable();
+ if (!task->thread.ri_cb)
+ return;
+ disable_runtime_instr();
+ kfree(task->thread.ri_cb);
+ task->thread.ri_signum = 0;
+ task->thread.ri_cb = NULL;
++ preempt_enable();
+ }
+
+ static void runtime_instr_int_handler(struct ext_code ext_code,
+@@ -100,9 +102,7 @@ SYSCALL_DEFINE2(s390_runtime_instr, int, command, int, signum)
+ return -EOPNOTSUPP;
+
+ if (command == S390_RUNTIME_INSTR_STOP) {
+- preempt_disable();
+ exit_thread_runtime_instr();
+- preempt_enable();
+ return 0;
+ }
+
+diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
+index 3738b138b843..b047734842df 100644
+--- a/arch/x86/include/asm/efi.h
++++ b/arch/x86/include/asm/efi.h
+@@ -3,6 +3,7 @@
+
+ #include <asm/i387.h>
+ #include <asm/pgtable.h>
++#include <asm/tlb.h>
+
+ /*
+ * We map the EFI regions needed for runtime services non-contiguously,
+@@ -64,6 +65,17 @@ extern u64 asmlinkage efi_call(void *fp, ...);
+
+ #define efi_call_phys(f, args...) efi_call((f), args)
+
++/*
++ * Scratch space used for switching the pagetable in the EFI stub
++ */
++struct efi_scratch {
++ u64 r15;
++ u64 prev_cr3;
++ pgd_t *efi_pgt;
++ bool use_pgd;
++ u64 phys_stack;
++} __packed;
++
+ #define efi_call_virt(f, ...) \
+ ({ \
+ efi_status_t __s; \
+@@ -71,7 +83,20 @@ extern u64 asmlinkage efi_call(void *fp, ...);
+ efi_sync_low_kernel_mappings(); \
+ preempt_disable(); \
+ __kernel_fpu_begin(); \
++ \
++ if (efi_scratch.use_pgd) { \
++ efi_scratch.prev_cr3 = read_cr3(); \
++ write_cr3((unsigned long)efi_scratch.efi_pgt); \
++ __flush_tlb_all(); \
++ } \
++ \
+ __s = efi_call((void *)efi.systab->runtime->f, __VA_ARGS__); \
++ \
++ if (efi_scratch.use_pgd) { \
++ write_cr3(efi_scratch.prev_cr3); \
++ __flush_tlb_all(); \
++ } \
++ \
+ __kernel_fpu_end(); \
+ preempt_enable(); \
+ __s; \
+@@ -98,6 +123,7 @@ extern void __init efi_memory_uc(u64 addr, unsigned long size);
+ extern void __init efi_map_region(efi_memory_desc_t *md);
+ extern void __init efi_map_region_fixed(efi_memory_desc_t *md);
+ extern void efi_sync_low_kernel_mappings(void);
++extern int __init efi_alloc_page_tables(void);
+ extern int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages);
+ extern void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages);
+ extern void __init old_map_region(efi_memory_desc_t *md);
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 23be7ffebb4b..c5ecf85227e0 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -1780,6 +1780,8 @@ static int ud_interception(struct vcpu_svm *svm)
+ int er;
+
+ er = emulate_instruction(&svm->vcpu, EMULTYPE_TRAP_UD);
++ if (er == EMULATE_USER_EXIT)
++ return 0;
+ if (er != EMULATE_DONE)
+ kvm_queue_exception(&svm->vcpu, UD_VECTOR);
+ return 1;
+@@ -3196,6 +3198,13 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
+ u32 ecx = msr->index;
+ u64 data = msr->data;
+ switch (ecx) {
++ case MSR_IA32_CR_PAT:
++ if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data))
++ return 1;
++ vcpu->arch.pat = data;
++ svm->vmcb->save.g_pat = data;
++ mark_dirty(svm->vmcb, VMCB_NPT);
++ break;
+ case MSR_IA32_TSC:
+ kvm_write_tsc(vcpu, msr);
+ break;
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 33c1b5311b98..665b10a55b30 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -5096,6 +5096,8 @@ static int handle_exception(struct kvm_vcpu *vcpu)
+ return 1;
+ }
+ er = emulate_instruction(vcpu, EMULTYPE_TRAP_UD);
++ if (er == EMULATE_USER_EXIT)
++ return 0;
+ if (er != EMULATE_DONE)
+ kvm_queue_exception(vcpu, UD_VECTOR);
+ return 1;
+@@ -9966,6 +9968,8 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
+ vmcs_writel(GUEST_SYSENTER_EIP, vmcs12->host_ia32_sysenter_eip);
+ vmcs_writel(GUEST_IDTR_BASE, vmcs12->host_idtr_base);
+ vmcs_writel(GUEST_GDTR_BASE, vmcs12->host_gdtr_base);
++ vmcs_write32(GUEST_IDTR_LIMIT, 0xFFFF);
++ vmcs_write32(GUEST_GDTR_LIMIT, 0xFFFF);
+
+ /* If not VM_EXIT_CLEAR_BNDCFGS, the L2 value propagates to L1. */
+ if (vmcs12->vm_exit_controls & VM_EXIT_CLEAR_BNDCFGS)
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 5f9cf11f9446..e4e7d45fd551 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -1697,6 +1697,9 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
+ */
+ BUILD_BUG_ON(offsetof(struct pvclock_vcpu_time_info, version) != 0);
+
++ if (guest_hv_clock.version & 1)
++ ++guest_hv_clock.version; /* first time write, random junk */
++
+ vcpu->hv_clock.version = guest_hv_clock.version + 1;
+ kvm_write_guest_cached(v->kvm, &vcpu->pv_time,
+ &vcpu->hv_clock,
+@@ -5433,6 +5436,8 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu,
+ if (reexecute_instruction(vcpu, cr2, write_fault_to_spt,
+ emulation_type))
+ return EMULATE_DONE;
++ if (ctxt->have_exception && inject_emulated_exception(vcpu))
++ return EMULATE_DONE;
+ if (emulation_type & EMULTYPE_SKIP)
+ return EMULATE_FAIL;
+ return handle_emulation_failure(vcpu);
+diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt
+index 816488c0b97e..2dc6a7df16cd 100644
+--- a/arch/x86/lib/x86-opcode-map.txt
++++ b/arch/x86/lib/x86-opcode-map.txt
+@@ -822,7 +822,7 @@ EndTable
+
+ GrpTable: Grp3_1
+ 0: TEST Eb,Ib
+-1:
++1: TEST Eb,Ib
+ 2: NOT Eb
+ 3: NEG Eb
+ 4: MUL AL,Eb
+diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
+index 2dd9b3ad3bb5..1e5a786e75ce 100644
+--- a/arch/x86/mm/pageattr.c
++++ b/arch/x86/mm/pageattr.c
+@@ -884,15 +884,10 @@ static void populate_pte(struct cpa_data *cpa,
+ pte = pte_offset_kernel(pmd, start);
+
+ while (num_pages-- && start < end) {
+-
+- /* deal with the NX bit */
+- if (!(pgprot_val(pgprot) & _PAGE_NX))
+- cpa->pfn &= ~_PAGE_NX;
+-
+- set_pte(pte, pfn_pte(cpa->pfn >> PAGE_SHIFT, pgprot));
++ set_pte(pte, pfn_pte(cpa->pfn, pgprot));
+
+ start += PAGE_SIZE;
+- cpa->pfn += PAGE_SIZE;
++ cpa->pfn++;
+ pte++;
+ }
+ }
+@@ -948,11 +943,11 @@ static int populate_pmd(struct cpa_data *cpa,
+
+ pmd = pmd_offset(pud, start);
+
+- set_pmd(pmd, __pmd(cpa->pfn | _PAGE_PSE |
++ set_pmd(pmd, __pmd(cpa->pfn << PAGE_SHIFT | _PAGE_PSE |
+ massage_pgprot(pmd_pgprot)));
+
+ start += PMD_SIZE;
+- cpa->pfn += PMD_SIZE;
++ cpa->pfn += PMD_SIZE >> PAGE_SHIFT;
+ cur_pages += PMD_SIZE >> PAGE_SHIFT;
+ }
+
+@@ -1021,11 +1016,11 @@ static int populate_pud(struct cpa_data *cpa, unsigned long start, pgd_t *pgd,
+ * Map everything starting from the Gb boundary, possibly with 1G pages
+ */
+ while (end - start >= PUD_SIZE) {
+- set_pud(pud, __pud(cpa->pfn | _PAGE_PSE |
++ set_pud(pud, __pud(cpa->pfn << PAGE_SHIFT | _PAGE_PSE |
+ massage_pgprot(pud_pgprot)));
+
+ start += PUD_SIZE;
+- cpa->pfn += PUD_SIZE;
++ cpa->pfn += PUD_SIZE >> PAGE_SHIFT;
+ cur_pages += PUD_SIZE >> PAGE_SHIFT;
+ pud++;
+ }
+diff --git a/arch/x86/platform/efi/efi-bgrt.c b/arch/x86/platform/efi/efi-bgrt.c
+index d7f997f7c26d..10380c8749b7 100644
+--- a/arch/x86/platform/efi/efi-bgrt.c
++++ b/arch/x86/platform/efi/efi-bgrt.c
+@@ -28,8 +28,7 @@ struct bmp_header {
+ void __init efi_bgrt_init(void)
+ {
+ acpi_status status;
+- void __iomem *image;
+- bool ioremapped = false;
++ void *image;
+ struct bmp_header bmp_header;
+
+ if (acpi_disabled)
+@@ -65,20 +64,14 @@ void __init efi_bgrt_init(void)
+ return;
+ }
+
+- image = efi_lookup_mapped_addr(bgrt_tab->image_address);
++ image = early_memremap(bgrt_tab->image_address, sizeof(bmp_header));
+ if (!image) {
+- image = early_ioremap(bgrt_tab->image_address,
+- sizeof(bmp_header));
+- ioremapped = true;
+- if (!image) {
+- pr_err("Ignoring BGRT: failed to map image header memory\n");
+- return;
+- }
++ pr_err("Ignoring BGRT: failed to map image header memory\n");
++ return;
+ }
+
+- memcpy_fromio(&bmp_header, image, sizeof(bmp_header));
+- if (ioremapped)
+- early_iounmap(image, sizeof(bmp_header));
++ memcpy(&bmp_header, image, sizeof(bmp_header));
++ early_memunmap(image, sizeof(bmp_header));
+ bgrt_image_size = bmp_header.size;
+
+ bgrt_image = kmalloc(bgrt_image_size, GFP_KERNEL | __GFP_NOWARN);
+@@ -88,18 +81,14 @@ void __init efi_bgrt_init(void)
+ return;
+ }
+
+- if (ioremapped) {
+- image = early_ioremap(bgrt_tab->image_address,
+- bmp_header.size);
+- if (!image) {
+- pr_err("Ignoring BGRT: failed to map image memory\n");
+- kfree(bgrt_image);
+- bgrt_image = NULL;
+- return;
+- }
++ image = early_memremap(bgrt_tab->image_address, bmp_header.size);
++ if (!image) {
++ pr_err("Ignoring BGRT: failed to map image memory\n");
++ kfree(bgrt_image);
++ bgrt_image = NULL;
++ return;
+ }
+
+- memcpy_fromio(bgrt_image, image, bgrt_image_size);
+- if (ioremapped)
+- early_iounmap(image, bmp_header.size);
++ memcpy(bgrt_image, image, bgrt_image_size);
++ early_memunmap(image, bmp_header.size);
+ }
+diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
+index 477384985ac9..9b2fe733e9f7 100644
+--- a/arch/x86/platform/efi/efi.c
++++ b/arch/x86/platform/efi/efi.c
+@@ -843,7 +843,7 @@ static void __init kexec_enter_virtual_mode(void)
+ * This function will switch the EFI runtime services to virtual mode.
+ * Essentially, we look through the EFI memmap and map every region that
+ * has the runtime attribute bit set in its memory descriptor into the
+- * ->trampoline_pgd page table using a top-down VA allocation scheme.
++ * efi_pgd page table.
+ *
+ * The old method which used to update that memory descriptor with the
+ * virtual address obtained from ioremap() is still supported when the
+@@ -853,8 +853,8 @@ static void __init kexec_enter_virtual_mode(void)
+ *
+ * The new method does a pagetable switch in a preemption-safe manner
+ * so that we're in a different address space when calling a runtime
+- * function. For function arguments passing we do copy the PGDs of the
+- * kernel page table into ->trampoline_pgd prior to each call.
++ * function. For function arguments passing we do copy the PUDs of the
++ * kernel page table into efi_pgd prior to each call.
+ *
+ * Specially for kexec boot, efi runtime maps in previous kernel should
+ * be passed in via setup_data. In that case runtime ranges will be mapped
+@@ -869,6 +869,12 @@ static void __init __efi_enter_virtual_mode(void)
+
+ efi.systab = NULL;
+
++ if (efi_alloc_page_tables()) {
++ pr_err("Failed to allocate EFI page tables\n");
++ clear_bit(EFI_RUNTIME_SERVICES, &efi.flags);
++ return;
++ }
++
+ efi_merge_regions();
+ new_memmap = efi_map_regions(&count, &pg_shift);
+ if (!new_memmap) {
+@@ -928,28 +934,11 @@ static void __init __efi_enter_virtual_mode(void)
+ efi_runtime_mkexec();
+
+ /*
+- * We mapped the descriptor array into the EFI pagetable above but we're
+- * not unmapping it here. Here's why:
+- *
+- * We're copying select PGDs from the kernel page table to the EFI page
+- * table and when we do so and make changes to those PGDs like unmapping
+- * stuff from them, those changes appear in the kernel page table and we
+- * go boom.
+- *
+- * From setup_real_mode():
+- *
+- * ...
+- * trampoline_pgd[0] = init_level4_pgt[pgd_index(__PAGE_OFFSET)].pgd;
+- *
+- * In this particular case, our allocation is in PGD 0 of the EFI page
+- * table but we've copied that PGD from PGD[272] of the EFI page table:
+- *
+- * pgd_index(__PAGE_OFFSET = 0xffff880000000000) = 272
+- *
+- * where the direct memory mapping in kernel space is.
+- *
+- * new_memmap's VA comes from that direct mapping and thus clearing it,
+- * it would get cleared in the kernel page table too.
++ * We mapped the descriptor array into the EFI pagetable above
++ * but we're not unmapping it here because if we're running in
++ * EFI mixed mode we need all of memory to be accessible when
++ * we pass parameters to the EFI runtime services in the
++ * thunking code.
+ *
+ * efi_cleanup_page_tables(__pa(new_memmap), 1 << pg_shift);
+ */
+diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c
+index ed5b67338294..58d669bc8250 100644
+--- a/arch/x86/platform/efi/efi_32.c
++++ b/arch/x86/platform/efi/efi_32.c
+@@ -38,6 +38,11 @@
+ * say 0 - 3G.
+ */
+
++int __init efi_alloc_page_tables(void)
++{
++ return 0;
++}
++
+ void efi_sync_low_kernel_mappings(void) {}
+ void __init efi_dump_pagetable(void) {}
+ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages)
+diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
+index a0ac0f9c307f..18dfaad71c99 100644
+--- a/arch/x86/platform/efi/efi_64.c
++++ b/arch/x86/platform/efi/efi_64.c
+@@ -40,6 +40,7 @@
+ #include <asm/fixmap.h>
+ #include <asm/realmode.h>
+ #include <asm/time.h>
++#include <asm/pgalloc.h>
+
+ /*
+ * We allocate runtime services regions bottom-up, starting from -4G, i.e.
+@@ -47,16 +48,7 @@
+ */
+ static u64 efi_va = EFI_VA_START;
+
+-/*
+- * Scratch space used for switching the pagetable in the EFI stub
+- */
+-struct efi_scratch {
+- u64 r15;
+- u64 prev_cr3;
+- pgd_t *efi_pgt;
+- bool use_pgd;
+- u64 phys_stack;
+-} __packed;
++struct efi_scratch efi_scratch;
+
+ static void __init early_code_mapping_set_exec(int executable)
+ {
+@@ -83,8 +75,11 @@ pgd_t * __init efi_call_phys_prolog(void)
+ int pgd;
+ int n_pgds;
+
+- if (!efi_enabled(EFI_OLD_MEMMAP))
+- return NULL;
++ if (!efi_enabled(EFI_OLD_MEMMAP)) {
++ save_pgd = (pgd_t *)read_cr3();
++ write_cr3((unsigned long)efi_scratch.efi_pgt);
++ goto out;
++ }
+
+ early_code_mapping_set_exec(1);
+
+@@ -96,6 +91,7 @@ pgd_t * __init efi_call_phys_prolog(void)
+ vaddress = (unsigned long)__va(pgd * PGDIR_SIZE);
+ set_pgd(pgd_offset_k(pgd * PGDIR_SIZE), *pgd_offset_k(vaddress));
+ }
++out:
+ __flush_tlb_all();
+
+ return save_pgd;
+@@ -109,8 +105,11 @@ void __init efi_call_phys_epilog(pgd_t *save_pgd)
+ int pgd_idx;
+ int nr_pgds;
+
+- if (!save_pgd)
++ if (!efi_enabled(EFI_OLD_MEMMAP)) {
++ write_cr3((unsigned long)save_pgd);
++ __flush_tlb_all();
+ return;
++ }
+
+ nr_pgds = DIV_ROUND_UP((max_pfn << PAGE_SHIFT) , PGDIR_SIZE);
+
+@@ -123,27 +122,97 @@ void __init efi_call_phys_epilog(pgd_t *save_pgd)
+ early_code_mapping_set_exec(0);
+ }
+
++static pgd_t *efi_pgd;
++
++/*
++ * We need our own copy of the higher levels of the page tables
++ * because we want to avoid inserting EFI region mappings (EFI_VA_END
++ * to EFI_VA_START) into the standard kernel page tables. Everything
++ * else can be shared, see efi_sync_low_kernel_mappings().
++ */
++int __init efi_alloc_page_tables(void)
++{
++ pgd_t *pgd;
++ pud_t *pud;
++ gfp_t gfp_mask;
++
++ if (efi_enabled(EFI_OLD_MEMMAP))
++ return 0;
++
++ gfp_mask = GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO;
++ efi_pgd = (pgd_t *)__get_free_page(gfp_mask);
++ if (!efi_pgd)
++ return -ENOMEM;
++
++ pgd = efi_pgd + pgd_index(EFI_VA_END);
++
++ pud = pud_alloc_one(NULL, 0);
++ if (!pud) {
++ free_page((unsigned long)efi_pgd);
++ return -ENOMEM;
++ }
++
++ pgd_populate(NULL, pgd, pud);
++
++ return 0;
++}
++
+ /*
+ * Add low kernel mappings for passing arguments to EFI functions.
+ */
+ void efi_sync_low_kernel_mappings(void)
+ {
+- unsigned num_pgds;
+- pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd);
++ unsigned num_entries;
++ pgd_t *pgd_k, *pgd_efi;
++ pud_t *pud_k, *pud_efi;
+
+ if (efi_enabled(EFI_OLD_MEMMAP))
+ return;
+
+- num_pgds = pgd_index(MODULES_END - 1) - pgd_index(PAGE_OFFSET);
++ /*
++ * We can share all PGD entries apart from the one entry that
++ * covers the EFI runtime mapping space.
++ *
++ * Make sure the EFI runtime region mappings are guaranteed to
++ * only span a single PGD entry and that the entry also maps
++ * other important kernel regions.
++ */
++ BUILD_BUG_ON(pgd_index(EFI_VA_END) != pgd_index(MODULES_END));
++ BUILD_BUG_ON((EFI_VA_START & PGDIR_MASK) !=
++ (EFI_VA_END & PGDIR_MASK));
++
++ pgd_efi = efi_pgd + pgd_index(PAGE_OFFSET);
++ pgd_k = pgd_offset_k(PAGE_OFFSET);
+
+- memcpy(pgd + pgd_index(PAGE_OFFSET),
+- init_mm.pgd + pgd_index(PAGE_OFFSET),
+- sizeof(pgd_t) * num_pgds);
++ num_entries = pgd_index(EFI_VA_END) - pgd_index(PAGE_OFFSET);
++ memcpy(pgd_efi, pgd_k, sizeof(pgd_t) * num_entries);
++
++ /*
++ * We share all the PUD entries apart from those that map the
++ * EFI regions. Copy around them.
++ */
++ BUILD_BUG_ON((EFI_VA_START & ~PUD_MASK) != 0);
++ BUILD_BUG_ON((EFI_VA_END & ~PUD_MASK) != 0);
++
++ pgd_efi = efi_pgd + pgd_index(EFI_VA_END);
++ pud_efi = pud_offset(pgd_efi, 0);
++
++ pgd_k = pgd_offset_k(EFI_VA_END);
++ pud_k = pud_offset(pgd_k, 0);
++
++ num_entries = pud_index(EFI_VA_END);
++ memcpy(pud_efi, pud_k, sizeof(pud_t) * num_entries);
++
++ pud_efi = pud_offset(pgd_efi, EFI_VA_START);
++ pud_k = pud_offset(pgd_k, EFI_VA_START);
++
++ num_entries = PTRS_PER_PUD - pud_index(EFI_VA_START);
++ memcpy(pud_efi, pud_k, sizeof(pud_t) * num_entries);
+ }
+
+ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages)
+ {
+- unsigned long text;
++ unsigned long pfn, text;
+ struct page *page;
+ unsigned npages;
+ pgd_t *pgd;
+@@ -151,8 +220,8 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages)
+ if (efi_enabled(EFI_OLD_MEMMAP))
+ return 0;
+
+- efi_scratch.efi_pgt = (pgd_t *)(unsigned long)real_mode_header->trampoline_pgd;
+- pgd = __va(efi_scratch.efi_pgt);
++ efi_scratch.efi_pgt = (pgd_t *)__pa(efi_pgd);
++ pgd = efi_pgd;
+
+ /*
+ * It can happen that the physical address of new_memmap lands in memory
+@@ -160,7 +229,8 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages)
+ * and ident-map those pages containing the map before calling
+ * phys_efi_set_virtual_address_map().
+ */
+- if (kernel_map_pages_in_pgd(pgd, pa_memmap, pa_memmap, num_pages, _PAGE_NX)) {
++ pfn = pa_memmap >> PAGE_SHIFT;
++ if (kernel_map_pages_in_pgd(pgd, pfn, pa_memmap, num_pages, _PAGE_NX)) {
+ pr_err("Error ident-mapping new memmap (0x%lx)!\n", pa_memmap);
+ return 1;
+ }
+@@ -185,8 +255,9 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages)
+
+ npages = (_end - _text) >> PAGE_SHIFT;
+ text = __pa(_text);
++ pfn = text >> PAGE_SHIFT;
+
+- if (kernel_map_pages_in_pgd(pgd, text >> PAGE_SHIFT, text, npages, 0)) {
++ if (kernel_map_pages_in_pgd(pgd, pfn, text, npages, 0)) {
+ pr_err("Failed to map kernel text 1:1\n");
+ return 1;
+ }
+@@ -196,20 +267,20 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages)
+
+ void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages)
+ {
+- pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd);
+-
+- kernel_unmap_pages_in_pgd(pgd, pa_memmap, num_pages);
++ kernel_unmap_pages_in_pgd(efi_pgd, pa_memmap, num_pages);
+ }
+
+ static void __init __map_region(efi_memory_desc_t *md, u64 va)
+ {
+- pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd);
+- unsigned long pf = 0;
++ unsigned long flags = 0;
++ unsigned long pfn;
++ pgd_t *pgd = efi_pgd;
+
+ if (!(md->attribute & EFI_MEMORY_WB))
+- pf |= _PAGE_PCD;
++ flags |= _PAGE_PCD;
+
+- if (kernel_map_pages_in_pgd(pgd, md->phys_addr, va, md->num_pages, pf))
++ pfn = md->phys_addr >> PAGE_SHIFT;
++ if (kernel_map_pages_in_pgd(pgd, pfn, va, md->num_pages, flags))
+ pr_warn("Error mapping PA 0x%llx -> VA 0x%llx!\n",
+ md->phys_addr, va);
+ }
+@@ -312,9 +383,7 @@ void __init efi_runtime_mkexec(void)
+ void __init efi_dump_pagetable(void)
+ {
+ #ifdef CONFIG_EFI_PGT_DUMP
+- pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd);
+-
+- ptdump_walk_pgd_level(NULL, pgd);
++ ptdump_walk_pgd_level(NULL, efi_pgd);
+ #endif
+ }
+
+diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S
+index 86d0f9e08dd9..32020cb8bb08 100644
+--- a/arch/x86/platform/efi/efi_stub_64.S
++++ b/arch/x86/platform/efi/efi_stub_64.S
+@@ -38,41 +38,6 @@
+ mov %rsi, %cr0; \
+ mov (%rsp), %rsp
+
+- /* stolen from gcc */
+- .macro FLUSH_TLB_ALL
+- movq %r15, efi_scratch(%rip)
+- movq %r14, efi_scratch+8(%rip)
+- movq %cr4, %r15
+- movq %r15, %r14
+- andb $0x7f, %r14b
+- movq %r14, %cr4
+- movq %r15, %cr4
+- movq efi_scratch+8(%rip), %r14
+- movq efi_scratch(%rip), %r15
+- .endm
+-
+- .macro SWITCH_PGT
+- cmpb $0, efi_scratch+24(%rip)
+- je 1f
+- movq %r15, efi_scratch(%rip) # r15
+- # save previous CR3
+- movq %cr3, %r15
+- movq %r15, efi_scratch+8(%rip) # prev_cr3
+- movq efi_scratch+16(%rip), %r15 # EFI pgt
+- movq %r15, %cr3
+- 1:
+- .endm
+-
+- .macro RESTORE_PGT
+- cmpb $0, efi_scratch+24(%rip)
+- je 2f
+- movq efi_scratch+8(%rip), %r15
+- movq %r15, %cr3
+- movq efi_scratch(%rip), %r15
+- FLUSH_TLB_ALL
+- 2:
+- .endm
+-
+ ENTRY(efi_call)
+ SAVE_XMM
+ mov (%rsp), %rax
+@@ -83,16 +48,8 @@ ENTRY(efi_call)
+ mov %r8, %r9
+ mov %rcx, %r8
+ mov %rsi, %rcx
+- SWITCH_PGT
+ call *%rdi
+- RESTORE_PGT
+ addq $48, %rsp
+ RESTORE_XMM
+ ret
+ ENDPROC(efi_call)
+-
+- .data
+-ENTRY(efi_scratch)
+- .fill 3,8,0
+- .byte 0
+- .quad 0
+diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
+index 5ab6fa9cfc2f..5e8c07abf2e7 100644
+--- a/drivers/ata/libata-eh.c
++++ b/drivers/ata/libata-eh.c
+@@ -2237,8 +2237,8 @@ static void ata_eh_link_autopsy(struct ata_link *link)
+ if (dev->flags & ATA_DFLAG_DUBIOUS_XFER)
+ eflags |= ATA_EFLAG_DUBIOUS_XFER;
+ ehc->i.action |= ata_eh_speed_down(dev, eflags, all_err_mask);
++ trace_ata_eh_link_autopsy(dev, ehc->i.action, all_err_mask);
+ }
+- trace_ata_eh_link_autopsy(dev, ehc->i.action, all_err_mask);
+ DPRINTK("EXIT\n");
+ }
+
+diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c
+index 0a1df821860f..6fe6e08479e6 100644
+--- a/drivers/clk/ti/clk-dra7-atl.c
++++ b/drivers/clk/ti/clk-dra7-atl.c
+@@ -264,7 +264,7 @@ static int of_dra7_atl_clk_probe(struct platform_device *pdev)
+
+ /* Get configuration for the ATL instances */
+ snprintf(prop, sizeof(prop), "atl%u", i);
+- cfg_node = of_find_node_by_name(node, prop);
++ cfg_node = of_get_child_by_name(node, prop);
+ if (cfg_node) {
+ ret = of_property_read_u32(cfg_node, "bws",
+ &cdesc->bws);
+@@ -277,6 +277,7 @@ static int of_dra7_atl_clk_probe(struct platform_device *pdev)
+ atl_write(cinfo, DRA7_ATL_AWSMUX_REG(i),
+ cdesc->aws);
+ }
++ of_node_put(cfg_node);
+ }
+
+ cdesc->probed = true;
+diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
+index 1f2c86d81176..91231143d991 100644
+--- a/drivers/firmware/efi/efi.c
++++ b/drivers/firmware/efi/efi.c
+@@ -237,38 +237,6 @@ err_put:
+ subsys_initcall(efisubsys_init);
+
+
+-/*
+- * We can't ioremap data in EFI boot services RAM, because we've already mapped
+- * it as RAM. So, look it up in the existing EFI memory map instead. Only
+- * callable after efi_enter_virtual_mode and before efi_free_boot_services.
+- */
+-void __iomem *efi_lookup_mapped_addr(u64 phys_addr)
+-{
+- struct efi_memory_map *map;
+- void *p;
+- map = efi.memmap;
+- if (!map)
+- return NULL;
+- if (WARN_ON(!map->map))
+- return NULL;
+- for (p = map->map; p < map->map_end; p += map->desc_size) {
+- efi_memory_desc_t *md = p;
+- u64 size = md->num_pages << EFI_PAGE_SHIFT;
+- u64 end = md->phys_addr + size;
+- if (!(md->attribute & EFI_MEMORY_RUNTIME) &&
+- md->type != EFI_BOOT_SERVICES_CODE &&
+- md->type != EFI_BOOT_SERVICES_DATA)
+- continue;
+- if (!md->virt_addr)
+- continue;
+- if (phys_addr >= md->phys_addr && phys_addr < end) {
+- phys_addr += md->virt_addr - md->phys_addr;
+- return (__force void __iomem *)(unsigned long)phys_addr;
+- }
+- }
+- return NULL;
+-}
+-
+ static __initdata efi_config_table_type_t common_tables[] = {
+ {ACPI_20_TABLE_GUID, "ACPI 2.0", &efi.acpi20},
+ {ACPI_TABLE_GUID, "ACPI", &efi.acpi},
+diff --git a/drivers/gpu/drm/armada/Makefile b/drivers/gpu/drm/armada/Makefile
+index d6f43e06150a..c9c619727806 100644
+--- a/drivers/gpu/drm/armada/Makefile
++++ b/drivers/gpu/drm/armada/Makefile
+@@ -5,3 +5,5 @@ armada-y += armada_510.o
+ armada-$(CONFIG_DEBUG_FS) += armada_debugfs.o
+
+ obj-$(CONFIG_DRM_ARMADA) := armada.o
++
++CFLAGS_armada_trace.o := -I$(src)
+diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
+index ae628001fd97..b4891066a369 100644
+--- a/drivers/gpu/drm/i915/intel_i2c.c
++++ b/drivers/gpu/drm/i915/intel_i2c.c
+@@ -394,7 +394,9 @@ static bool
+ gmbus_is_index_read(struct i2c_msg *msgs, int i, int num)
+ {
+ return (i + 1 < num &&
+- !(msgs[i].flags & I2C_M_RD) && msgs[i].len <= 2 &&
++ msgs[i].addr == msgs[i + 1].addr &&
++ !(msgs[i].flags & I2C_M_RD) &&
++ (msgs[i].len == 1 || msgs[i].len == 2) &&
+ (msgs[i + 1].flags & I2C_M_RD));
+ }
+
+diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
+index 30904a9b2a4c..91848659b38e 100644
+--- a/drivers/gpu/drm/panel/panel-simple.c
++++ b/drivers/gpu/drm/panel/panel-simple.c
+@@ -352,6 +352,7 @@ static int panel_simple_remove(struct device *dev)
+ drm_panel_remove(&panel->base);
+
+ panel_simple_disable(&panel->base);
++ panel_simple_unprepare(&panel->base);
+
+ if (panel->ddc)
+ put_device(&panel->ddc->dev);
+@@ -367,6 +368,7 @@ static void panel_simple_shutdown(struct device *dev)
+ struct panel_simple *panel = dev_get_drvdata(dev);
+
+ panel_simple_disable(&panel->base);
++ panel_simple_unprepare(&panel->base);
+ }
+
+ static const struct drm_display_mode ampire_am800480r3tmqwa1h_mode = {
+diff --git a/drivers/iio/light/cm3232.c b/drivers/iio/light/cm3232.c
+index 39c8d99cc48e..02107ccf57a1 100644
+--- a/drivers/iio/light/cm3232.c
++++ b/drivers/iio/light/cm3232.c
+@@ -119,7 +119,7 @@ static int cm3232_reg_init(struct cm3232_chip *chip)
+ if (ret < 0)
+ dev_err(&chip->client->dev, "Error writing reg_cmd\n");
+
+- return 0;
++ return ret;
+ }
+
+ /**
+diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
+index b60fde9d9878..18e688d68e66 100644
+--- a/drivers/infiniband/ulp/srp/ib_srp.c
++++ b/drivers/infiniband/ulp/srp/ib_srp.c
+@@ -670,12 +670,19 @@ static void srp_path_rec_completion(int status,
+ static int srp_lookup_path(struct srp_rdma_ch *ch)
+ {
+ struct srp_target_port *target = ch->target;
+- int ret;
++ int ret = -ENODEV;
+
+ ch->path.numb_path = 1;
+
+ init_completion(&ch->done);
+
++ /*
++ * Avoid that the SCSI host can be removed by srp_remove_target()
++ * before srp_path_rec_completion() is called.
++ */
++ if (!scsi_host_get(target->scsi_host))
++ goto out;
++
+ ch->path_query_id = ib_sa_path_rec_get(&srp_sa_client,
+ target->srp_host->srp_dev->dev,
+ target->srp_host->port,
+@@ -689,18 +696,24 @@ static int srp_lookup_path(struct srp_rdma_ch *ch)
+ GFP_KERNEL,
+ srp_path_rec_completion,
+ ch, &ch->path_query);
+- if (ch->path_query_id < 0)
+- return ch->path_query_id;
++ ret = ch->path_query_id;
++ if (ret < 0)
++ goto put;
+
+ ret = wait_for_completion_interruptible(&ch->done);
+ if (ret < 0)
+- return ret;
++ goto put;
+
+- if (ch->status < 0)
++ ret = ch->status;
++ if (ret < 0)
+ shost_printk(KERN_WARNING, target->scsi_host,
+ PFX "Path record query failed\n");
+
+- return ch->status;
++put:
++ scsi_host_put(target->scsi_host);
++
++out:
++ return ret;
+ }
+
+ static int srp_send_req(struct srp_rdma_ch *ch, bool multich)
+diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
+index 27e5b0090e40..416cd07ab87a 100644
+--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
++++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
+@@ -3516,7 +3516,7 @@ static int srpt_parse_i_port_id(u8 i_port_id[16], const char *name)
+ {
+ const char *p;
+ unsigned len, count, leading_zero_bytes;
+- int ret, rc;
++ int ret;
+
+ p = name;
+ if (strncasecmp(p, "0x", 2) == 0)
+@@ -3528,10 +3528,9 @@ static int srpt_parse_i_port_id(u8 i_port_id[16], const char *name)
+ count = min(len / 2, 16U);
+ leading_zero_bytes = 16 - count;
+ memset(i_port_id, 0, leading_zero_bytes);
+- rc = hex2bin(i_port_id + leading_zero_bytes, p, count);
+- if (rc < 0)
+- pr_debug("hex2bin failed for srpt_parse_i_port_id: %d\n", rc);
+- ret = 0;
++ ret = hex2bin(i_port_id + leading_zero_bytes, p, count);
++ if (ret < 0)
++ pr_debug("hex2bin failed for srpt_parse_i_port_id: %d\n", ret);
+ out:
+ return ret;
+ }
+diff --git a/drivers/md/bcache/alloc.c b/drivers/md/bcache/alloc.c
+index 8eeab72b93e2..4d46f2ce606f 100644
+--- a/drivers/md/bcache/alloc.c
++++ b/drivers/md/bcache/alloc.c
+@@ -406,7 +406,8 @@ long bch_bucket_alloc(struct cache *ca, unsigned reserve, bool wait)
+
+ finish_wait(&ca->set->bucket_wait, &w);
+ out:
+- wake_up_process(ca->alloc_thread);
++ if (ca->alloc_thread)
++ wake_up_process(ca->alloc_thread);
+
+ trace_bcache_alloc(ca, reserve);
+
+@@ -478,7 +479,7 @@ int __bch_bucket_alloc_set(struct cache_set *c, unsigned reserve,
+ if (b == -1)
+ goto err;
+
+- k->ptr[i] = PTR(ca->buckets[b].gen,
++ k->ptr[i] = MAKE_PTR(ca->buckets[b].gen,
+ bucket_to_sector(c, b),
+ ca->sb.nr_this_dev);
+
+diff --git a/drivers/md/bcache/extents.c b/drivers/md/bcache/extents.c
+index 243de0bf15cd..4bf15182c4da 100644
+--- a/drivers/md/bcache/extents.c
++++ b/drivers/md/bcache/extents.c
+@@ -584,7 +584,7 @@ static bool bch_extent_merge(struct btree_keys *bk, struct bkey *l, struct bkey
+ return false;
+
+ for (i = 0; i < KEY_PTRS(l); i++)
+- if (l->ptr[i] + PTR(0, KEY_SIZE(l), 0) != r->ptr[i] ||
++ if (l->ptr[i] + MAKE_PTR(0, KEY_SIZE(l), 0) != r->ptr[i] ||
+ PTR_BUCKET_NR(b->c, l, i) != PTR_BUCKET_NR(b->c, r, i))
+ return false;
+
+diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
+index fe080ad0e558..6fb47a2a3d9d 100644
+--- a/drivers/md/bcache/journal.c
++++ b/drivers/md/bcache/journal.c
+@@ -508,7 +508,7 @@ static void journal_reclaim(struct cache_set *c)
+ continue;
+
+ ja->cur_idx = next;
+- k->ptr[n++] = PTR(0,
++ k->ptr[n++] = MAKE_PTR(0,
+ bucket_to_sector(c, ca->sb.d[ja->cur_idx]),
+ ca->sb.nr_this_dev);
+ }
+diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
+index 4520bca6dc3f..51dc353f7962 100644
+--- a/drivers/md/dm-bufio.c
++++ b/drivers/md/dm-bufio.c
+@@ -922,7 +922,8 @@ static void __get_memory_limit(struct dm_bufio_client *c,
+ buffers = c->minimum_buffers;
+
+ *limit_buffers = buffers;
+- *threshold_buffers = buffers * DM_BUFIO_WRITEBACK_PERCENT / 100;
++ *threshold_buffers = mult_frac(buffers,
++ DM_BUFIO_WRITEBACK_PERCENT, 100);
+ }
+
+ /*
+@@ -1823,19 +1824,15 @@ static int __init dm_bufio_init(void)
+ memset(&dm_bufio_caches, 0, sizeof dm_bufio_caches);
+ memset(&dm_bufio_cache_names, 0, sizeof dm_bufio_cache_names);
+
+- mem = (__u64)((totalram_pages - totalhigh_pages) *
+- DM_BUFIO_MEMORY_PERCENT / 100) << PAGE_SHIFT;
++ mem = (__u64)mult_frac(totalram_pages - totalhigh_pages,
++ DM_BUFIO_MEMORY_PERCENT, 100) << PAGE_SHIFT;
+
+ if (mem > ULONG_MAX)
+ mem = ULONG_MAX;
+
+ #ifdef CONFIG_MMU
+- /*
+- * Get the size of vmalloc space the same way as VMALLOC_TOTAL
+- * in fs/proc/internal.h
+- */
+- if (mem > (VMALLOC_END - VMALLOC_START) * DM_BUFIO_VMALLOC_PERCENT / 100)
+- mem = (VMALLOC_END - VMALLOC_START) * DM_BUFIO_VMALLOC_PERCENT / 100;
++ if (mem > mult_frac(VMALLOC_TOTAL, DM_BUFIO_VMALLOC_PERCENT, 100))
++ mem = mult_frac(VMALLOC_TOTAL, DM_BUFIO_VMALLOC_PERCENT, 100);
+ #endif
+
+ dm_bufio_default_cache_size = mem;
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index 87de9a0848b7..d192ab2ed17c 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -3516,11 +3516,15 @@ struct mapped_device *dm_get_from_kobject(struct kobject *kobj)
+
+ md = container_of(kobj, struct mapped_device, kobj_holder.kobj);
+
+- if (test_bit(DMF_FREEING, &md->flags) ||
+- dm_deleting_md(md))
+- return NULL;
+-
++ spin_lock(&_minor_lock);
++ if (test_bit(DMF_FREEING, &md->flags) || dm_deleting_md(md)) {
++ md = NULL;
++ goto out;
++ }
+ dm_get(md);
++out:
++ spin_unlock(&_minor_lock);
++
+ return md;
+ }
+
+diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
+index 4795c31ceebc..d2c1b340cf67 100644
+--- a/drivers/media/rc/ir-lirc-codec.c
++++ b/drivers/media/rc/ir-lirc-codec.c
+@@ -289,11 +289,14 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
+ if (!dev->max_timeout)
+ return -ENOSYS;
+
++ /* Check for multiply overflow */
++ if (val > U32_MAX / 1000)
++ return -EINVAL;
++
+ tmp = val * 1000;
+
+- if (tmp < dev->min_timeout ||
+- tmp > dev->max_timeout)
+- return -EINVAL;
++ if (tmp < dev->min_timeout || tmp > dev->max_timeout)
++ return -EINVAL;
+
+ dev->timeout = tmp;
+ break;
+diff --git a/drivers/media/usb/as102/as102_fw.c b/drivers/media/usb/as102/as102_fw.c
+index 07d08c49f4d4..b2e16bb67572 100644
+--- a/drivers/media/usb/as102/as102_fw.c
++++ b/drivers/media/usb/as102/as102_fw.c
+@@ -101,18 +101,23 @@ static int as102_firmware_upload(struct as10x_bus_adapter_t *bus_adap,
+ unsigned char *cmd,
+ const struct firmware *firmware) {
+
+- struct as10x_fw_pkt_t fw_pkt;
++ struct as10x_fw_pkt_t *fw_pkt;
+ int total_read_bytes = 0, errno = 0;
+ unsigned char addr_has_changed = 0;
+
++ fw_pkt = kmalloc(sizeof(*fw_pkt), GFP_KERNEL);
++ if (!fw_pkt)
++ return -ENOMEM;
++
++
+ for (total_read_bytes = 0; total_read_bytes < firmware->size; ) {
+ int read_bytes = 0, data_len = 0;
+
+ /* parse intel hex line */
+ read_bytes = parse_hex_line(
+ (u8 *) (firmware->data + total_read_bytes),
+- fw_pkt.raw.address,
+- fw_pkt.raw.data,
++ fw_pkt->raw.address,
++ fw_pkt->raw.data,
+ &data_len,
+ &addr_has_changed);
+
+@@ -122,28 +127,28 @@ static int as102_firmware_upload(struct as10x_bus_adapter_t *bus_adap,
+ /* detect the end of file */
+ total_read_bytes += read_bytes;
+ if (total_read_bytes == firmware->size) {
+- fw_pkt.u.request[0] = 0x00;
+- fw_pkt.u.request[1] = 0x03;
++ fw_pkt->u.request[0] = 0x00;
++ fw_pkt->u.request[1] = 0x03;
+
+ /* send EOF command */
+ errno = bus_adap->ops->upload_fw_pkt(bus_adap,
+ (uint8_t *)
+- &fw_pkt, 2, 0);
++ fw_pkt, 2, 0);
+ if (errno < 0)
+ goto error;
+ } else {
+ if (!addr_has_changed) {
+ /* prepare command to send */
+- fw_pkt.u.request[0] = 0x00;
+- fw_pkt.u.request[1] = 0x01;
++ fw_pkt->u.request[0] = 0x00;
++ fw_pkt->u.request[1] = 0x01;
+
+- data_len += sizeof(fw_pkt.u.request);
+- data_len += sizeof(fw_pkt.raw.address);
++ data_len += sizeof(fw_pkt->u.request);
++ data_len += sizeof(fw_pkt->raw.address);
+
+ /* send cmd to device */
+ errno = bus_adap->ops->upload_fw_pkt(bus_adap,
+ (uint8_t *)
+- &fw_pkt,
++ fw_pkt,
+ data_len,
+ 0);
+ if (errno < 0)
+@@ -152,6 +157,7 @@ static int as102_firmware_upload(struct as10x_bus_adapter_t *bus_adap,
+ }
+ }
+ error:
++ kfree(fw_pkt);
+ return (errno == 0) ? total_read_bytes : errno;
+ }
+
+diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c
+index 3503fcef7b51..2b437d89d32c 100644
+--- a/drivers/media/usb/cx231xx/cx231xx-cards.c
++++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
+@@ -1636,7 +1636,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
+ nr = dev->devno;
+
+ assoc_desc = udev->actconfig->intf_assoc[0];
+- if (assoc_desc->bFirstInterface != ifnum) {
++ if (!assoc_desc || assoc_desc->bFirstInterface != ifnum) {
+ dev_err(d, "Not found matching IAD interface\n");
+ retval = -ENODEV;
+ goto err_if;
+diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
+index e3a3468002e6..a8423943ffe4 100644
+--- a/drivers/media/v4l2-core/v4l2-ctrls.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls.c
+@@ -1198,6 +1198,16 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
+ }
+ EXPORT_SYMBOL(v4l2_ctrl_fill);
+
++static u32 user_flags(const struct v4l2_ctrl *ctrl)
++{
++ u32 flags = ctrl->flags;
++
++ if (ctrl->is_ptr)
++ flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
++
++ return flags;
++}
++
+ static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes)
+ {
+ memset(ev->reserved, 0, sizeof(ev->reserved));
+@@ -1205,7 +1215,7 @@ static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 change
+ ev->id = ctrl->id;
+ ev->u.ctrl.changes = changes;
+ ev->u.ctrl.type = ctrl->type;
+- ev->u.ctrl.flags = ctrl->flags;
++ ev->u.ctrl.flags = user_flags(ctrl);
+ if (ctrl->is_ptr)
+ ev->u.ctrl.value64 = 0;
+ else
+@@ -2549,10 +2559,8 @@ int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctr
+ else
+ qc->id = ctrl->id;
+ strlcpy(qc->name, ctrl->name, sizeof(qc->name));
+- qc->flags = ctrl->flags;
++ qc->flags = user_flags(ctrl);
+ qc->type = ctrl->type;
+- if (ctrl->is_ptr)
+- qc->flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
+ qc->elem_size = ctrl->elem_size;
+ qc->elems = ctrl->elems;
+ qc->nr_of_dims = ctrl->nr_of_dims;
+diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
+index 2d3db81be099..b3b69f0e0dd7 100644
+--- a/drivers/misc/eeprom/at24.c
++++ b/drivers/misc/eeprom/at24.c
+@@ -275,6 +275,9 @@ static ssize_t at24_read(struct at24_data *at24,
+ if (unlikely(!count))
+ return count;
+
++ if (off + count > at24->chip.byte_len)
++ return -EINVAL;
++
+ /*
+ * Read data from chip, protecting against concurrent updates
+ * from this host, but not from other I2C masters.
+@@ -329,6 +332,9 @@ static ssize_t at24_eeprom_write(struct at24_data *at24, const char *buf,
+ unsigned long timeout, write_time;
+ unsigned next_page;
+
++ if (offset + count > at24->chip.byte_len)
++ return -EINVAL;
++
+ /* Get corresponding I2C address and adjust offset */
+ client = at24_translate_offset(at24, &offset);
+
+diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
+index 972ff844cf5a..cf7c7bc1e940 100644
+--- a/drivers/mmc/core/bus.c
++++ b/drivers/mmc/core/bus.c
+@@ -155,6 +155,9 @@ static int mmc_bus_suspend(struct device *dev)
+ return ret;
+
+ ret = host->bus_ops->suspend(host);
++ if (ret)
++ pm_generic_resume(dev);
++
+ return ret;
+ }
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index fa5cd51cba38..f84113fc7cb7 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -2518,15 +2518,18 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const uint8_t *buf)
+ {
+ struct nand_chip *chip = mtd->priv;
++ int chipnr = (int)(to >> chip->chip_shift);
+ struct mtd_oob_ops ops;
+ int ret;
+
+- /* Wait for the device to get ready */
+- panic_nand_wait(mtd, chip, 400);
+-
+ /* Grab the device */
+ panic_nand_get_device(chip, mtd, FL_WRITING);
+
++ chip->select_chip(mtd, chipnr);
++
++ /* Wait for the device to get ready */
++ panic_nand_wait(mtd, chip, 400);
++
+ memset(&ops, 0, sizeof(ops));
+ ops.len = len;
+ ops.datbuf = (uint8_t *)buf;
+diff --git a/drivers/net/ethernet/3com/typhoon.c b/drivers/net/ethernet/3com/typhoon.c
+index 8f8418d2ac4a..a0012c3cb4f6 100644
+--- a/drivers/net/ethernet/3com/typhoon.c
++++ b/drivers/net/ethernet/3com/typhoon.c
+@@ -2366,9 +2366,9 @@ typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+ * 4) Get the hardware address.
+ * 5) Put the card to sleep.
+ */
+- if (typhoon_reset(ioaddr, WaitSleep) < 0) {
++ err = typhoon_reset(ioaddr, WaitSleep);
++ if (err < 0) {
+ err_msg = "could not reset 3XP";
+- err = -EIO;
+ goto error_out_dma;
+ }
+
+@@ -2382,24 +2382,25 @@ typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+ typhoon_init_interface(tp);
+ typhoon_init_rings(tp);
+
+- if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
++ err = typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST);
++ if (err < 0) {
+ err_msg = "cannot boot 3XP sleep image";
+- err = -EIO;
+ goto error_out_reset;
+ }
+
+ INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_MAC_ADDRESS);
+- if(typhoon_issue_command(tp, 1, &xp_cmd, 1, xp_resp) < 0) {
++ err = typhoon_issue_command(tp, 1, &xp_cmd, 1, xp_resp);
++ if (err < 0) {
+ err_msg = "cannot read MAC address";
+- err = -EIO;
+ goto error_out_reset;
+ }
+
+ *(__be16 *)&dev->dev_addr[0] = htons(le16_to_cpu(xp_resp[0].parm1));
+ *(__be32 *)&dev->dev_addr[2] = htonl(le32_to_cpu(xp_resp[0].parm2));
+
+- if(!is_valid_ether_addr(dev->dev_addr)) {
++ if (!is_valid_ether_addr(dev->dev_addr)) {
+ err_msg = "Could not obtain valid ethernet address, aborting";
++ err = -EIO;
+ goto error_out_reset;
+ }
+
+@@ -2407,7 +2408,8 @@ typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+ * later when we print out the version reported.
+ */
+ INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_VERSIONS);
+- if(typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp) < 0) {
++ err = typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp);
++ if (err < 0) {
+ err_msg = "Could not get Sleep Image version";
+ goto error_out_reset;
+ }
+@@ -2424,9 +2426,9 @@ typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+ if(xp_resp[0].numDesc != 0)
+ tp->capabilities |= TYPHOON_WAKEUP_NEEDS_RESET;
+
+- if(typhoon_sleep(tp, PCI_D3hot, 0) < 0) {
++ err = typhoon_sleep(tp, PCI_D3hot, 0);
++ if (err < 0) {
+ err_msg = "cannot put adapter to sleep";
+- err = -EIO;
+ goto error_out_reset;
+ }
+
+@@ -2449,7 +2451,8 @@ typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+ dev->features = dev->hw_features |
+ NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_RXCSUM;
+
+- if(register_netdev(dev) < 0) {
++ err = register_netdev(dev);
++ if (err < 0) {
+ err_msg = "unable to register netdev";
+ goto error_out_reset;
+ }
+diff --git a/drivers/net/ethernet/intel/e1000e/mac.c b/drivers/net/ethernet/intel/e1000e/mac.c
+index 30b74d590bee..1c9cb53c25a3 100644
+--- a/drivers/net/ethernet/intel/e1000e/mac.c
++++ b/drivers/net/ethernet/intel/e1000e/mac.c
+@@ -410,6 +410,9 @@ void e1000e_clear_hw_cntrs_base(struct e1000_hw *hw)
+ * Checks to see of the link status of the hardware has changed. If a
+ * change in link status has been detected, then we read the PHY registers
+ * to get the current speed/duplex if link exists.
++ *
++ * Returns a negative error code (-E1000_ERR_*) or 0 (link down) or 1 (link
++ * up).
+ **/
+ s32 e1000e_check_for_copper_link(struct e1000_hw *hw)
+ {
+@@ -423,7 +426,7 @@ s32 e1000e_check_for_copper_link(struct e1000_hw *hw)
+ * Change or Rx Sequence Error interrupt.
+ */
+ if (!mac->get_link_status)
+- return 0;
++ return 1;
+
+ /* First we want to see if the MII Status Register reports
+ * link. If so, then we want to get the current speed/duplex
+@@ -461,10 +464,12 @@ s32 e1000e_check_for_copper_link(struct e1000_hw *hw)
+ * different link partner.
+ */
+ ret_val = e1000e_config_fc_after_link_up(hw);
+- if (ret_val)
++ if (ret_val) {
+ e_dbg("Error configuring flow control\n");
++ return ret_val;
++ }
+
+- return ret_val;
++ return 1;
+ }
+
+ /**
+diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
+index 68913d103542..39e9d7db23df 100644
+--- a/drivers/net/ethernet/intel/e1000e/netdev.c
++++ b/drivers/net/ethernet/intel/e1000e/netdev.c
+@@ -4866,7 +4866,7 @@ static bool e1000e_has_link(struct e1000_adapter *adapter)
+ case e1000_media_type_copper:
+ if (hw->mac.get_link_status) {
+ ret_val = hw->mac.ops.check_for_link(hw);
+- link_active = !hw->mac.get_link_status;
++ link_active = ret_val > 0;
+ } else {
+ link_active = true;
+ }
+@@ -4884,7 +4884,7 @@ static bool e1000e_has_link(struct e1000_adapter *adapter)
+ break;
+ }
+
+- if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
++ if ((ret_val == -E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
+ (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
+ /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
+ e_info("Gigabit has been disabled, downgrading speed\n");
+diff --git a/drivers/net/ethernet/intel/e1000e/phy.c b/drivers/net/ethernet/intel/e1000e/phy.c
+index b2005e13fb01..0963aa2d5e45 100644
+--- a/drivers/net/ethernet/intel/e1000e/phy.c
++++ b/drivers/net/ethernet/intel/e1000e/phy.c
+@@ -1744,6 +1744,7 @@ s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations,
+ s32 ret_val = 0;
+ u16 i, phy_status;
+
++ *success = false;
+ for (i = 0; i < iterations; i++) {
+ /* Some PHYs require the MII_BMSR register to be read
+ * twice due to the link bit being sticky. No harm doing
+@@ -1763,16 +1764,16 @@ s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations,
+ ret_val = e1e_rphy(hw, MII_BMSR, &phy_status);
+ if (ret_val)
+ break;
+- if (phy_status & BMSR_LSTATUS)
++ if (phy_status & BMSR_LSTATUS) {
++ *success = true;
+ break;
++ }
+ if (usec_interval >= 1000)
+ msleep(usec_interval / 1000);
+ else
+ udelay(usec_interval);
+ }
+
+- *success = (i < iterations);
+-
+ return ret_val;
+ }
+
+diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_main.c b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
+index c9da1b5d4804..ae0b9300ab08 100644
+--- a/drivers/net/ethernet/intel/fm10k/fm10k_main.c
++++ b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
+@@ -1239,7 +1239,7 @@ static bool fm10k_clean_tx_irq(struct fm10k_q_vector *q_vector,
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+- read_barrier_depends();
++ smp_rmb();
+
+ /* if DD is not set pending work has not been completed */
+ if (!(eop_desc->flags & FM10K_TXD_FLAG_DONE))
+diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
+index 5b5bea159bd5..13e0cf90e567 100644
+--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
++++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
+@@ -3283,7 +3283,7 @@ static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+- read_barrier_depends();
++ smp_rmb();
+
+ /* if the descriptor isn't done, no work yet to do */
+ if (!(eop_desc->cmd_type_offset_bsz &
+diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+index 9d95042d5a0f..c1e8303062de 100644
+--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
++++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+@@ -712,7 +712,7 @@ static bool i40e_clean_tx_irq(struct i40e_ring *tx_ring, int budget)
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+- read_barrier_depends();
++ smp_rmb();
+
+ /* we have caught up to head, no work left to do */
+ if (tx_head == tx_desc)
+diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
+index 458fbb421090..1045ba3a554d 100644
+--- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
++++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
+@@ -231,7 +231,7 @@ static bool i40e_clean_tx_irq(struct i40e_ring *tx_ring, int budget)
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+- read_barrier_depends();
++ smp_rmb();
+
+ /* we have caught up to head, no work left to do */
+ if (tx_head == tx_desc)
+diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
+index b5a8a5e40870..34f15f56b2a1 100644
+--- a/drivers/net/ethernet/intel/igb/igb_main.c
++++ b/drivers/net/ethernet/intel/igb/igb_main.c
+@@ -6427,7 +6427,7 @@ static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+- read_barrier_depends();
++ smp_rmb();
+
+ /* if DD is not set pending work has not been completed */
+ if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)))
+diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c
+index 95af14e139d7..70f8f743a416 100644
+--- a/drivers/net/ethernet/intel/igbvf/netdev.c
++++ b/drivers/net/ethernet/intel/igbvf/netdev.c
+@@ -808,7 +808,7 @@ static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring)
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+- read_barrier_depends();
++ smp_rmb();
+
+ /* if DD is not set pending work has not been completed */
+ if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)))
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+index 2462b3c5fa40..e9762d0079eb 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+@@ -1100,7 +1100,7 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+- read_barrier_depends();
++ smp_rmb();
+
+ /* if DD is not set pending work has not been completed */
+ if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)))
+diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+index 1d7b00b038a2..80029560dd11 100644
+--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
++++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+@@ -312,7 +312,7 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector,
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+- read_barrier_depends();
++ smp_rmb();
+
+ /* if DD is not set pending work has not been completed */
+ if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)))
+diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
+index 56e0a1de0c37..6757d9c63bf2 100644
+--- a/drivers/net/wireless/ath/ath10k/mac.c
++++ b/drivers/net/wireless/ath/ath10k/mac.c
+@@ -3118,7 +3118,8 @@ static int ath10k_mac_txpower_recalc(struct ath10k *ar)
+ lockdep_assert_held(&ar->conf_mutex);
+
+ list_for_each_entry(arvif, &ar->arvifs, list) {
+- WARN_ON(arvif->txpower < 0);
++ if (arvif->txpower <= 0)
++ continue;
+
+ if (txpower == -1)
+ txpower = arvif->txpower;
+@@ -3126,8 +3127,8 @@ static int ath10k_mac_txpower_recalc(struct ath10k *ar)
+ txpower = min(txpower, arvif->txpower);
+ }
+
+- if (WARN_ON(txpower == -1))
+- return -EINVAL;
++ if (txpower == -1)
++ return 0;
+
+ ret = ath10k_mac_txpower_setup(ar, txpower);
+ if (ret) {
+diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
+index ee0c5f602e29..87638a6e7388 100644
+--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c
++++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
+@@ -953,8 +953,10 @@ static int ath10k_wmi_tlv_op_pull_fw_stats(struct ath10k *ar,
+ struct ath10k_fw_stats_pdev *dst;
+
+ src = data;
+- if (data_len < sizeof(*src))
++ if (data_len < sizeof(*src)) {
++ kfree(tb);
+ return -EPROTO;
++ }
+
+ data += sizeof(*src);
+ data_len -= sizeof(*src);
+@@ -974,8 +976,10 @@ static int ath10k_wmi_tlv_op_pull_fw_stats(struct ath10k *ar,
+ struct ath10k_fw_stats_vdev *dst;
+
+ src = data;
+- if (data_len < sizeof(*src))
++ if (data_len < sizeof(*src)) {
++ kfree(tb);
+ return -EPROTO;
++ }
+
+ data += sizeof(*src);
+ data_len -= sizeof(*src);
+@@ -993,8 +997,10 @@ static int ath10k_wmi_tlv_op_pull_fw_stats(struct ath10k *ar,
+ struct ath10k_fw_stats_peer *dst;
+
+ src = data;
+- if (data_len < sizeof(*src))
++ if (data_len < sizeof(*src)) {
++ kfree(tb);
+ return -EPROTO;
++ }
+
+ data += sizeof(*src);
+ data_len -= sizeof(*src);
+diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
+index 3c4e709cf9a1..5754d7b48c1f 100644
+--- a/drivers/pci/probe.c
++++ b/drivers/pci/probe.c
+@@ -1319,8 +1319,16 @@ static void program_hpp_type0(struct pci_dev *dev, struct hpp_type0 *hpp)
+
+ static void program_hpp_type1(struct pci_dev *dev, struct hpp_type1 *hpp)
+ {
+- if (hpp)
+- dev_warn(&dev->dev, "PCI-X settings not supported\n");
++ int pos;
++
++ if (!hpp)
++ return;
++
++ pos = pci_find_capability(dev, PCI_CAP_ID_PCIX);
++ if (!pos)
++ return;
++
++ dev_warn(&dev->dev, "PCI-X settings not supported\n");
+ }
+
+ static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
+@@ -1331,6 +1339,9 @@ static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
+ if (!hpp)
+ return;
+
++ if (!pci_is_pcie(dev))
++ return;
++
+ if (hpp->revision > 1) {
+ dev_warn(&dev->dev, "PCIe settings rev %d not supported\n",
+ hpp->revision);
+diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
+index a2b7ae3329c0..9fe1d5793cee 100644
+--- a/drivers/staging/iio/cdc/ad7150.c
++++ b/drivers/staging/iio/cdc/ad7150.c
+@@ -275,7 +275,7 @@ static int ad7150_write_event_config(struct iio_dev *indio_dev,
+ error_ret:
+ mutex_unlock(&chip->state_lock);
+
+- return 0;
++ return ret;
+ }
+
+ static int ad7150_read_event_value(struct iio_dev *indio_dev,
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 89d01943ca93..8df1ff3766c4 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -1919,12 +1919,14 @@ attach:
+
+ if (!(hdr->opcode & ISCSI_OP_IMMEDIATE)) {
+ int cmdsn_ret = iscsit_sequence_cmd(conn, cmd, buf, hdr->cmdsn);
+- if (cmdsn_ret == CMDSN_HIGHER_THAN_EXP)
++ if (cmdsn_ret == CMDSN_HIGHER_THAN_EXP) {
+ out_of_order_cmdsn = 1;
+- else if (cmdsn_ret == CMDSN_LOWER_THAN_EXP)
++ } else if (cmdsn_ret == CMDSN_LOWER_THAN_EXP) {
++ target_put_sess_cmd(&cmd->se_cmd);
+ return 0;
+- else if (cmdsn_ret == CMDSN_ERROR_CANNOT_RECOVER)
++ } else if (cmdsn_ret == CMDSN_ERROR_CANNOT_RECOVER) {
+ return -1;
++ }
+ }
+ iscsit_ack_from_expstatsn(conn, be32_to_cpu(hdr->exp_statsn));
+
+diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
+index 2209040bff95..46ae8d258669 100644
+--- a/drivers/vhost/scsi.c
++++ b/drivers/vhost/scsi.c
+@@ -862,6 +862,7 @@ vhost_scsi_iov_to_sgl(struct vhost_scsi_cmd *cmd, bool write,
+ struct scatterlist *sg, int sg_count)
+ {
+ size_t off = iter->iov_offset;
++ struct scatterlist *p = sg;
+ int i, ret;
+
+ for (i = 0; i < iter->nr_segs; i++) {
+@@ -870,8 +871,8 @@ vhost_scsi_iov_to_sgl(struct vhost_scsi_cmd *cmd, bool write,
+
+ ret = vhost_scsi_map_to_sgl(cmd, base, len, sg, write);
+ if (ret < 0) {
+- for (i = 0; i < sg_count; i++) {
+- struct page *page = sg_page(&sg[i]);
++ while (p < sg) {
++ struct page *page = sg_page(p++);
+ if (page)
+ put_page(page);
+ }
+diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
+index 0e0eb10f82a0..816a0e08ef10 100644
+--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
++++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
+@@ -316,7 +316,7 @@ static int xenbus_write_transaction(unsigned msg_type,
+ rc = -ENOMEM;
+ goto out;
+ }
+- } else if (msg_type == XS_TRANSACTION_END) {
++ } else if (u->u.msg.tx_id != 0) {
+ list_for_each_entry(trans, &u->transactions, list)
+ if (trans->handle.id == u->u.msg.tx_id)
+ break;
+diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
+index 99c3c4ffe1d9..2df79195652b 100644
+--- a/fs/9p/vfs_inode.c
++++ b/fs/9p/vfs_inode.c
+@@ -483,6 +483,9 @@ static int v9fs_test_inode(struct inode *inode, void *data)
+
+ if (v9inode->qid.type != st->qid.type)
+ return 0;
++
++ if (v9inode->qid.path != st->qid.path)
++ return 0;
+ return 1;
+ }
+
+diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
+index ce7ab92f7e84..095424bfab5e 100644
+--- a/fs/9p/vfs_inode_dotl.c
++++ b/fs/9p/vfs_inode_dotl.c
+@@ -87,6 +87,9 @@ static int v9fs_test_inode_dotl(struct inode *inode, void *data)
+
+ if (v9inode->qid.type != st->qid.type)
+ return 0;
++
++ if (v9inode->qid.path != st->qid.path)
++ return 0;
+ return 1;
+ }
+
+diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
+index 35b755e79c2d..fe6e7050fe50 100644
+--- a/fs/autofs4/waitq.c
++++ b/fs/autofs4/waitq.c
+@@ -87,7 +87,8 @@ static int autofs4_write(struct autofs_sb_info *sbi,
+ spin_unlock_irqrestore(¤t->sighand->siglock, flags);
+ }
+
+- return (bytes > 0);
++ /* if 'wr' returned 0 (impossible) we assume -EIO (safe) */
++ return bytes == 0 ? 0 : wr < 0 ? wr : -EIO;
+ }
+
+ static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
+@@ -101,6 +102,7 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
+ } pkt;
+ struct file *pipe = NULL;
+ size_t pktsz;
++ int ret;
+
+ DPRINTK("wait id = 0x%08lx, name = %.*s, type=%d",
+ (unsigned long) wq->wait_queue_token, wq->name.len, wq->name.name, type);
+@@ -173,7 +175,18 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
+ mutex_unlock(&sbi->wq_mutex);
+
+ if (autofs4_write(sbi, pipe, &pkt, pktsz))
++ switch (ret = autofs4_write(sbi, pipe, &pkt, pktsz)) {
++ case 0:
++ break;
++ case -ENOMEM:
++ case -ERESTARTSYS:
++ /* Just fail this one */
++ autofs4_wait_release(sbi, wq->wait_queue_token, ret);
++ break;
++ default:
+ autofs4_catatonic_mode(sbi);
++ break;
++ }
+ fput(pipe);
+ }
+
+diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
+index 1d8b3f8c3654..0fd2354dfd0a 100644
+--- a/fs/btrfs/extent-tree.c
++++ b/fs/btrfs/extent-tree.c
+@@ -3260,13 +3260,6 @@ again:
+ goto again;
+ }
+
+- /* We've already setup this transaction, go ahead and exit */
+- if (block_group->cache_generation == trans->transid &&
+- i_size_read(inode)) {
+- dcs = BTRFS_DC_SETUP;
+- goto out_put;
+- }
+-
+ /*
+ * We want to set the generation to 0, that way if anything goes wrong
+ * from here on out we know not to trust this cache when we load up next
+@@ -3290,6 +3283,13 @@ again:
+ }
+ WARN_ON(ret);
+
++ /* We've already setup this transaction, go ahead and exit */
++ if (block_group->cache_generation == trans->transid &&
++ i_size_read(inode)) {
++ dcs = BTRFS_DC_SETUP;
++ goto out_put;
++ }
++
+ if (i_size_read(inode) > 0) {
+ ret = btrfs_check_trunc_cache_free_space(root,
+ &root->fs_info->global_block_rsv);
+diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c
+index 286f10b0363b..4f457d5c4933 100644
+--- a/fs/ecryptfs/messaging.c
++++ b/fs/ecryptfs/messaging.c
+@@ -442,15 +442,16 @@ void ecryptfs_release_messaging(void)
+ }
+ if (ecryptfs_daemon_hash) {
+ struct ecryptfs_daemon *daemon;
++ struct hlist_node *n;
+ int i;
+
+ mutex_lock(&ecryptfs_daemon_hash_mux);
+ for (i = 0; i < (1 << ecryptfs_hash_bits); i++) {
+ int rc;
+
+- hlist_for_each_entry(daemon,
+- &ecryptfs_daemon_hash[i],
+- euid_chain) {
++ hlist_for_each_entry_safe(daemon, n,
++ &ecryptfs_daemon_hash[i],
++ euid_chain) {
+ rc = ecryptfs_exorcise_daemon(daemon);
+ if (rc)
+ printk(KERN_ERR "%s: Error whilst "
+diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
+index a3276bf9ac00..447d64e47c4c 100644
+--- a/fs/ext4/extents.c
++++ b/fs/ext4/extents.c
+@@ -4795,7 +4795,8 @@ static long ext4_zero_range(struct file *file, loff_t offset,
+ }
+
+ if (!(mode & FALLOC_FL_KEEP_SIZE) &&
+- offset + len > i_size_read(inode)) {
++ (offset + len > i_size_read(inode) ||
++ offset + len > EXT4_I(inode)->i_disksize)) {
+ new_size = offset + len;
+ ret = inode_newsize_ok(inode, new_size);
+ if (ret)
+@@ -4964,7 +4965,8 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
+ }
+
+ if (!(mode & FALLOC_FL_KEEP_SIZE) &&
+- offset + len > i_size_read(inode)) {
++ (offset + len > i_size_read(inode) ||
++ offset + len > EXT4_I(inode)->i_disksize)) {
+ new_size = offset + len;
+ ret = inode_newsize_ok(inode, new_size);
+ if (ret)
+diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
+index 0ac4c1f73fbd..25177e6bd603 100644
+--- a/fs/isofs/isofs.h
++++ b/fs/isofs/isofs.h
+@@ -103,7 +103,7 @@ static inline unsigned int isonum_733(char *p)
+ /* Ignore bigendian datum due to broken mastering programs */
+ return get_unaligned_le32(p);
+ }
+-extern int iso_date(char *, int);
++extern int iso_date(u8 *, int);
+
+ struct inode; /* To make gcc happy */
+
+diff --git a/fs/isofs/rock.h b/fs/isofs/rock.h
+index ed09e2b08637..f835976ce033 100644
+--- a/fs/isofs/rock.h
++++ b/fs/isofs/rock.h
+@@ -65,7 +65,7 @@ struct RR_PL_s {
+ };
+
+ struct stamp {
+- char time[7];
++ __u8 time[7]; /* actually 6 unsigned, 1 signed */
+ } __attribute__ ((packed));
+
+ struct RR_TF_s {
+diff --git a/fs/isofs/util.c b/fs/isofs/util.c
+index 005a15cfd30a..37860fea364d 100644
+--- a/fs/isofs/util.c
++++ b/fs/isofs/util.c
+@@ -15,7 +15,7 @@
+ * to GMT. Thus we should always be correct.
+ */
+
+-int iso_date(char * p, int flag)
++int iso_date(u8 *p, int flag)
+ {
+ int year, month, day, hour, minute, second, tz;
+ int crtime;
+diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
+index 4227adce3e52..1484ae1907c6 100644
+--- a/fs/nfs/dir.c
++++ b/fs/nfs/dir.c
+@@ -1279,7 +1279,7 @@ static int nfs_weak_revalidate(struct dentry *dentry, unsigned int flags)
+ return 0;
+ }
+
+- error = nfs_revalidate_inode(NFS_SERVER(inode), inode);
++ error = nfs_lookup_verify_inode(inode, flags);
+ dfprintk(LOOKUPCACHE, "NFS: %s: inode %lu is %s\n",
+ __func__, inode->i_ino, error ? "invalid" : "valid");
+ return !error;
+@@ -1439,6 +1439,7 @@ static int nfs4_lookup_revalidate(struct dentry *, unsigned int);
+
+ const struct dentry_operations nfs4_dentry_operations = {
+ .d_revalidate = nfs4_lookup_revalidate,
++ .d_weak_revalidate = nfs_weak_revalidate,
+ .d_delete = nfs_dentry_delete,
+ .d_iput = nfs_dentry_iput,
+ .d_automount = nfs_d_automount,
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index f06af7248be7..1ce18913762a 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -242,15 +242,12 @@ const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
+ };
+
+ const u32 nfs4_fs_locations_bitmap[3] = {
+- FATTR4_WORD0_TYPE
+- | FATTR4_WORD0_CHANGE
++ FATTR4_WORD0_CHANGE
+ | FATTR4_WORD0_SIZE
+ | FATTR4_WORD0_FSID
+ | FATTR4_WORD0_FILEID
+ | FATTR4_WORD0_FS_LOCATIONS,
+- FATTR4_WORD1_MODE
+- | FATTR4_WORD1_NUMLINKS
+- | FATTR4_WORD1_OWNER
++ FATTR4_WORD1_OWNER
+ | FATTR4_WORD1_OWNER_GROUP
+ | FATTR4_WORD1_RAWDEV
+ | FATTR4_WORD1_SPACE_USED
+@@ -6212,9 +6209,7 @@ static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
+ struct page *page)
+ {
+ struct nfs_server *server = NFS_SERVER(dir);
+- u32 bitmask[3] = {
+- [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
+- };
++ u32 bitmask[3];
+ struct nfs4_fs_locations_arg args = {
+ .dir_fh = NFS_FH(dir),
+ .name = name,
+@@ -6233,12 +6228,15 @@ static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
+
+ dprintk("%s: start\n", __func__);
+
++ bitmask[0] = nfs4_fattr_bitmap[0] | FATTR4_WORD0_FS_LOCATIONS;
++ bitmask[1] = nfs4_fattr_bitmap[1];
++
+ /* Ask for the fileid of the absent filesystem if mounted_on_fileid
+ * is not supported */
+ if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
+- bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
++ bitmask[0] &= ~FATTR4_WORD0_FILEID;
+ else
+- bitmask[0] |= FATTR4_WORD0_FILEID;
++ bitmask[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
+
+ nfs_fattr_init(&fs_locations->fattr);
+ fs_locations->server = server;
+diff --git a/fs/nfs/super.c b/fs/nfs/super.c
+index f175b833b6ba..0ee31759ddde 100644
+--- a/fs/nfs/super.c
++++ b/fs/nfs/super.c
+@@ -1319,7 +1319,7 @@ static int nfs_parse_mount_options(char *raw,
+ mnt->options |= NFS_OPTION_MIGRATION;
+ break;
+ case Opt_nomigration:
+- mnt->options &= NFS_OPTION_MIGRATION;
++ mnt->options &= ~NFS_OPTION_MIGRATION;
+ break;
+
+ /*
+diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
+index 22e9799323ad..529434f926f1 100644
+--- a/fs/nfsd/nfs4state.c
++++ b/fs/nfsd/nfs4state.c
+@@ -3776,7 +3776,8 @@ static struct nfs4_delegation *find_deleg_stateid(struct nfs4_client *cl, statei
+ {
+ struct nfs4_stid *ret;
+
+- ret = find_stateid_by_type(cl, s, NFS4_DELEG_STID);
++ ret = find_stateid_by_type(cl, s,
++ NFS4_DELEG_STID|NFS4_REVOKED_DELEG_STID);
+ if (!ret)
+ return NULL;
+ return delegstateid(ret);
+@@ -3799,6 +3800,12 @@ nfs4_check_deleg(struct nfs4_client *cl, struct nfsd4_open *open,
+ deleg = find_deleg_stateid(cl, &open->op_delegate_stateid);
+ if (deleg == NULL)
+ goto out;
++ if (deleg->dl_stid.sc_type == NFS4_REVOKED_DELEG_STID) {
++ nfs4_put_stid(&deleg->dl_stid);
++ if (cl->cl_minorversion)
++ status = nfserr_deleg_revoked;
++ goto out;
++ }
+ flags = share_access_to_flags(open->op_share_access);
+ status = nfs4_check_delegmode(deleg, flags);
+ if (status) {
+@@ -4655,6 +4662,16 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
+ struct nfs4_stid **s, struct nfsd_net *nn)
+ {
+ __be32 status;
++ bool return_revoked = false;
++
++ /*
++ * only return revoked delegations if explicitly asked.
++ * otherwise we report revoked or bad_stateid status.
++ */
++ if (typemask & NFS4_REVOKED_DELEG_STID)
++ return_revoked = true;
++ else if (typemask & NFS4_DELEG_STID)
++ typemask |= NFS4_REVOKED_DELEG_STID;
+
+ if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
+ return nfserr_bad_stateid;
+@@ -4669,6 +4686,12 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
+ *s = find_stateid_by_type(cstate->clp, stateid, typemask);
+ if (!*s)
+ return nfserr_bad_stateid;
++ if (((*s)->sc_type == NFS4_REVOKED_DELEG_STID) && !return_revoked) {
++ nfs4_put_stid(*s);
++ if (cstate->minorversion)
++ return nfserr_deleg_revoked;
++ return nfserr_bad_stateid;
++ }
+ return nfs_ok;
+ }
+
+diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
+index c6abbad9b8e3..3cdd5cc80c11 100644
+--- a/fs/nilfs2/segment.c
++++ b/fs/nilfs2/segment.c
+@@ -1883,8 +1883,6 @@ static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci,
+ "failed to get inode block.\n");
+ return err;
+ }
+- mark_buffer_dirty(ibh);
+- nilfs_mdt_mark_dirty(ifile);
+ spin_lock(&nilfs->ns_inode_lock);
+ if (likely(!ii->i_bh))
+ ii->i_bh = ibh;
+@@ -1893,6 +1891,10 @@ static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci,
+ goto retry;
+ }
+
++ // Always redirty the buffer to avoid race condition
++ mark_buffer_dirty(ii->i_bh);
++ nilfs_mdt_mark_dirty(ifile);
++
+ clear_bit(NILFS_I_QUEUED, &ii->i_state);
+ set_bit(NILFS_I_BUSY, &ii->i_state);
+ list_move_tail(&ii->i_dirty, &sci->sc_dirty_files);
+diff --git a/include/linux/netlink.h b/include/linux/netlink.h
+index 6835c1279df7..0a9f48df9c9e 100644
+--- a/include/linux/netlink.h
++++ b/include/linux/netlink.h
+@@ -120,6 +120,7 @@ netlink_skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
+ struct netlink_callback {
+ struct sk_buff *skb;
+ const struct nlmsghdr *nlh;
++ int (*start)(struct netlink_callback *);
+ int (*dump)(struct sk_buff * skb,
+ struct netlink_callback *cb);
+ int (*done)(struct netlink_callback *cb);
+@@ -142,6 +143,7 @@ struct nlmsghdr *
+ __nlmsg_put(struct sk_buff *skb, u32 portid, u32 seq, int type, int len, int flags);
+
+ struct netlink_dump_control {
++ int (*start)(struct netlink_callback *);
+ int (*dump)(struct sk_buff *skb, struct netlink_callback *);
+ int (*done)(struct netlink_callback *);
+ void *data;
+diff --git a/include/net/genetlink.h b/include/net/genetlink.h
+index a9af1cc8c1bc..d76f2da89b5a 100644
+--- a/include/net/genetlink.h
++++ b/include/net/genetlink.h
+@@ -114,6 +114,7 @@ static inline void genl_info_net_set(struct genl_info *info, struct net *net)
+ * @flags: flags
+ * @policy: attribute validation policy
+ * @doit: standard command callback
++ * @start: start callback for dumps
+ * @dumpit: callback for dumpers
+ * @done: completion callback for dumps
+ * @ops_list: operations list
+@@ -122,6 +123,7 @@ struct genl_ops {
+ const struct nla_policy *policy;
+ int (*doit)(struct sk_buff *skb,
+ struct genl_info *info);
++ int (*start)(struct netlink_callback *cb);
+ int (*dumpit)(struct sk_buff *skb,
+ struct netlink_callback *cb);
+ int (*done)(struct netlink_callback *cb);
+diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
+index 5664ca07c9c7..a01a076ea060 100644
+--- a/include/trace/events/sunrpc.h
++++ b/include/trace/events/sunrpc.h
+@@ -455,20 +455,22 @@ TRACE_EVENT(svc_recv,
+ TP_ARGS(rqst, status),
+
+ TP_STRUCT__entry(
+- __field(struct sockaddr *, addr)
+ __field(__be32, xid)
+ __field(int, status)
+ __field(unsigned long, flags)
++ __dynamic_array(unsigned char, addr, rqst->rq_addrlen)
+ ),
+
+ TP_fast_assign(
+- __entry->addr = (struct sockaddr *)&rqst->rq_addr;
+ __entry->xid = status > 0 ? rqst->rq_xid : 0;
+ __entry->status = status;
+ __entry->flags = rqst->rq_flags;
++ memcpy(__get_dynamic_array(addr),
++ &rqst->rq_addr, rqst->rq_addrlen);
+ ),
+
+- TP_printk("addr=%pIScp xid=0x%x status=%d flags=%s", __entry->addr,
++ TP_printk("addr=%pIScp xid=0x%x status=%d flags=%s",
++ (struct sockaddr *)__get_dynamic_array(addr),
+ be32_to_cpu(__entry->xid), __entry->status,
+ show_rqstp_flags(__entry->flags))
+ );
+@@ -480,22 +482,23 @@ DECLARE_EVENT_CLASS(svc_rqst_status,
+ TP_ARGS(rqst, status),
+
+ TP_STRUCT__entry(
+- __field(struct sockaddr *, addr)
+ __field(__be32, xid)
+- __field(int, dropme)
+ __field(int, status)
+ __field(unsigned long, flags)
++ __dynamic_array(unsigned char, addr, rqst->rq_addrlen)
+ ),
+
+ TP_fast_assign(
+- __entry->addr = (struct sockaddr *)&rqst->rq_addr;
+ __entry->xid = rqst->rq_xid;
+ __entry->status = status;
+ __entry->flags = rqst->rq_flags;
++ memcpy(__get_dynamic_array(addr),
++ &rqst->rq_addr, rqst->rq_addrlen);
+ ),
+
+ TP_printk("addr=%pIScp rq_xid=0x%x status=%d flags=%s",
+- __entry->addr, be32_to_cpu(__entry->xid),
++ (struct sockaddr *)__get_dynamic_array(addr),
++ be32_to_cpu(__entry->xid),
+ __entry->status, show_rqstp_flags(__entry->flags))
+ );
+
+diff --git a/include/uapi/linux/bcache.h b/include/uapi/linux/bcache.h
+index 22b6ad31c706..8562b1cb776b 100644
+--- a/include/uapi/linux/bcache.h
++++ b/include/uapi/linux/bcache.h
+@@ -90,7 +90,7 @@ PTR_FIELD(PTR_GEN, 0, 8)
+
+ #define PTR_CHECK_DEV ((1 << PTR_DEV_BITS) - 1)
+
+-#define PTR(gen, offset, dev) \
++#define MAKE_PTR(gen, offset, dev) \
+ ((((__u64) dev) << 51) | ((__u64) offset) << 8 | gen)
+
+ /* Bkey utility code */
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index f2f8ff54d2c0..8fbedeb5553f 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -577,8 +577,7 @@ void resched_cpu(int cpu)
+ struct rq *rq = cpu_rq(cpu);
+ unsigned long flags;
+
+- if (!raw_spin_trylock_irqsave(&rq->lock, flags))
+- return;
++ raw_spin_lock_irqsave(&rq->lock, flags);
+ resched_curr(rq);
+ raw_spin_unlock_irqrestore(&rq->lock, flags);
+ }
+diff --git a/mm/huge_memory.c b/mm/huge_memory.c
+index bdd6a8dd5797..4aa31c77cbab 100644
+--- a/mm/huge_memory.c
++++ b/mm/huge_memory.c
+@@ -1235,17 +1235,11 @@ struct page *follow_trans_huge_pmd(struct vm_area_struct *vma,
+ VM_BUG_ON_PAGE(!PageHead(page), page);
+ if (flags & FOLL_TOUCH) {
+ pmd_t _pmd;
+- /*
+- * We should set the dirty bit only for FOLL_WRITE but
+- * for now the dirty bit in the pmd is meaningless.
+- * And if the dirty bit will become meaningful and
+- * we'll only set it with FOLL_WRITE, an atomic
+- * set_bit will be required on the pmd to set the
+- * young bit, instead of the current set_pmd_at.
+- */
+- _pmd = pmd_mkyoung(pmd_mkdirty(*pmd));
++ _pmd = pmd_mkyoung(*pmd);
++ if (flags & FOLL_WRITE)
++ _pmd = pmd_mkdirty(_pmd);
+ if (pmdp_set_access_flags(vma, addr & HPAGE_PMD_MASK,
+- pmd, _pmd, 1))
++ pmd, _pmd, flags & FOLL_WRITE))
+ update_mmu_cache_pmd(vma, addr, pmd);
+ }
+ if ((flags & FOLL_POPULATE) && (vma->vm_flags & VM_LOCKED)) {
+diff --git a/mm/madvise.c b/mm/madvise.c
+index d551475517bf..a9c866c9cc0e 100644
+--- a/mm/madvise.c
++++ b/mm/madvise.c
+@@ -221,15 +221,14 @@ static long madvise_willneed(struct vm_area_struct *vma,
+ {
+ struct file *file = vma->vm_file;
+
++ *prev = vma;
+ #ifdef CONFIG_SWAP
+ if (!file) {
+- *prev = vma;
+ force_swapin_readahead(vma, start, end);
+ return 0;
+ }
+
+ if (shmem_mapping(file->f_mapping)) {
+- *prev = vma;
+ force_shm_swapin_readahead(vma, start, end,
+ file->f_mapping);
+ return 0;
+@@ -244,7 +243,6 @@ static long madvise_willneed(struct vm_area_struct *vma,
+ return 0;
+ }
+
+- *prev = vma;
+ start = ((start - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
+ if (end > vma->vm_end)
+ end = vma->vm_end;
+diff --git a/net/9p/client.c b/net/9p/client.c
+index fb4ac475311c..77b608dee691 100644
+--- a/net/9p/client.c
++++ b/net/9p/client.c
+@@ -749,8 +749,7 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
+ }
+ again:
+ /* Wait for the response */
+- err = wait_event_interruptible(*req->wq,
+- req->status >= REQ_STATUS_RCVD);
++ err = wait_event_killable(*req->wq, req->status >= REQ_STATUS_RCVD);
+
+ /*
+ * Make sure our req is coherent with regard to updates in other
+diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
+index 9dd49ca67dbc..202923a36677 100644
+--- a/net/9p/trans_virtio.c
++++ b/net/9p/trans_virtio.c
+@@ -290,8 +290,8 @@ req_retry:
+ if (err == -ENOSPC) {
+ chan->ring_bufs_avail = 0;
+ spin_unlock_irqrestore(&chan->lock, flags);
+- err = wait_event_interruptible(*chan->vc_wq,
+- chan->ring_bufs_avail);
++ err = wait_event_killable(*chan->vc_wq,
++ chan->ring_bufs_avail);
+ if (err == -ERESTARTSYS)
+ return err;
+
+@@ -331,7 +331,7 @@ static int p9_get_mapped_pages(struct virtio_chan *chan,
+ * Other zc request to finish here
+ */
+ if (atomic_read(&vp_pinned) >= chan->p9_max_pages) {
+- err = wait_event_interruptible(vp_wq,
++ err = wait_event_killable(vp_wq,
+ (atomic_read(&vp_pinned) < chan->p9_max_pages));
+ if (err == -ERESTARTSYS)
+ return err;
+@@ -475,8 +475,8 @@ req_retry_pinned:
+ if (err == -ENOSPC) {
+ chan->ring_bufs_avail = 0;
+ spin_unlock_irqrestore(&chan->lock, flags);
+- err = wait_event_interruptible(*chan->vc_wq,
+- chan->ring_bufs_avail);
++ err = wait_event_killable(*chan->vc_wq,
++ chan->ring_bufs_avail);
+ if (err == -ERESTARTSYS)
+ goto err_out;
+
+@@ -493,8 +493,7 @@ req_retry_pinned:
+ virtqueue_kick(chan->vq);
+ spin_unlock_irqrestore(&chan->lock, flags);
+ p9_debug(P9_DEBUG_TRANS, "virtio request kicked\n");
+- err = wait_event_interruptible(*req->wq,
+- req->status >= REQ_STATUS_RCVD);
++ err = wait_event_killable(*req->wq, req->status >= REQ_STATUS_RCVD);
+ /*
+ * Non kernel buffers are pinned, unpin them
+ */
+diff --git a/net/ipv6/route.c b/net/ipv6/route.c
+index 897f5941d86b..135fe458bfac 100644
+--- a/net/ipv6/route.c
++++ b/net/ipv6/route.c
+@@ -3056,7 +3056,11 @@ static int ip6_route_dev_notify(struct notifier_block *this,
+ net->ipv6.ip6_blk_hole_entry->dst.dev = dev;
+ net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev);
+ #endif
+- } else if (event == NETDEV_UNREGISTER) {
++ } else if (event == NETDEV_UNREGISTER &&
++ dev->reg_state != NETREG_UNREGISTERED) {
++ /* NETDEV_UNREGISTER could be fired for multiple times by
++ * netdev_wait_allrefs(). Make sure we only call this once.
++ */
+ in6_dev_put(net->ipv6.ip6_null_entry->rt6i_idev);
+ #ifdef CONFIG_IPV6_MULTIPLE_TABLES
+ in6_dev_put(net->ipv6.ip6_prohibit_entry->rt6i_idev);
+diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
+index cdf8609a6240..d0f2ce65e474 100644
+--- a/net/mac80211/ieee80211_i.h
++++ b/net/mac80211/ieee80211_i.h
+@@ -690,7 +690,6 @@ struct ieee80211_if_mesh {
+ const struct ieee80211_mesh_sync_ops *sync_ops;
+ s64 sync_offset_clockdrift_max;
+ spinlock_t sync_offset_lock;
+- bool adjusting_tbtt;
+ /* mesh power save */
+ enum nl80211_mesh_power_mode nonpeer_pm;
+ int ps_peers_light_sleep;
+diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
+index c5af4e3d4497..48257f17688f 100644
+--- a/net/mac80211/mesh.c
++++ b/net/mac80211/mesh.c
+@@ -289,8 +289,6 @@ int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
+ /* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */
+ *pos |= ifmsh->ps_peers_deep_sleep ?
+ IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL : 0x00;
+- *pos++ |= ifmsh->adjusting_tbtt ?
+- IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING : 0x00;
+ *pos++ = 0x00;
+
+ return 0;
+@@ -792,7 +790,6 @@ int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
+ ifmsh->mesh_cc_id = 0; /* Disabled */
+ /* register sync ops from extensible synchronization framework */
+ ifmsh->sync_ops = ieee80211_mesh_sync_ops_get(ifmsh->mesh_sp_id);
+- ifmsh->adjusting_tbtt = false;
+ ifmsh->sync_offset_clockdrift_max = 0;
+ set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
+ ieee80211_mesh_root_setup(ifmsh);
+diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
+index 60d737f144e3..7f758c9aa200 100644
+--- a/net/mac80211/mesh_plink.c
++++ b/net/mac80211/mesh_plink.c
+@@ -452,12 +452,14 @@ mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *addr,
+
+ /* Userspace handles station allocation */
+ if (sdata->u.mesh.user_mpm ||
+- sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED)
+- cfg80211_notify_new_peer_candidate(sdata->dev, addr,
+- elems->ie_start,
+- elems->total_len,
+- GFP_KERNEL);
+- else
++ sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) {
++ if (mesh_peer_accepts_plinks(elems) &&
++ mesh_plink_availables(sdata))
++ cfg80211_notify_new_peer_candidate(sdata->dev, addr,
++ elems->ie_start,
++ elems->total_len,
++ GFP_KERNEL);
++ } else
+ sta = __mesh_sta_info_alloc(sdata, addr);
+
+ return sta;
+diff --git a/net/mac80211/mesh_sync.c b/net/mac80211/mesh_sync.c
+index 09625d6205c3..6e8ece73bfa6 100644
+--- a/net/mac80211/mesh_sync.c
++++ b/net/mac80211/mesh_sync.c
+@@ -119,7 +119,6 @@ static void mesh_sync_offset_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
+ */
+
+ if (elems->mesh_config && mesh_peer_tbtt_adjusting(elems)) {
+- clear_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN);
+ msync_dbg(sdata, "STA %pM : is adjusting TBTT\n",
+ sta->sta.addr);
+ goto no_sync;
+@@ -168,11 +167,9 @@ static void mesh_sync_offset_adjust_tbtt(struct ieee80211_sub_if_data *sdata,
+ struct beacon_data *beacon)
+ {
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+- u8 cap;
+
+ WARN_ON(ifmsh->mesh_sp_id != IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET);
+ WARN_ON(!rcu_read_lock_held());
+- cap = beacon->meshconf->meshconf_cap;
+
+ spin_lock_bh(&ifmsh->sync_offset_lock);
+
+@@ -186,21 +183,13 @@ static void mesh_sync_offset_adjust_tbtt(struct ieee80211_sub_if_data *sdata,
+ "TBTT : kicking off TBTT adjustment with clockdrift_max=%lld\n",
+ ifmsh->sync_offset_clockdrift_max);
+ set_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags);
+-
+- ifmsh->adjusting_tbtt = true;
+ } else {
+ msync_dbg(sdata,
+ "TBTT : max clockdrift=%lld; too small to adjust\n",
+ (long long)ifmsh->sync_offset_clockdrift_max);
+ ifmsh->sync_offset_clockdrift_max = 0;
+-
+- ifmsh->adjusting_tbtt = false;
+ }
+ spin_unlock_bh(&ifmsh->sync_offset_lock);
+-
+- beacon->meshconf->meshconf_cap = ifmsh->adjusting_tbtt ?
+- IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING | cap :
+- ~IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING & cap;
+ }
+
+ static const struct sync_method sync_methods[] = {
+diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
+index 34ded09317e7..792f6637c83e 100644
+--- a/net/netfilter/nf_tables_api.c
++++ b/net/netfilter/nf_tables_api.c
+@@ -1925,7 +1925,7 @@ static void nf_tables_rule_destroy(const struct nft_ctx *ctx,
+ * is called on error from nf_tables_newrule().
+ */
+ expr = nft_expr_first(rule);
+- while (expr->ops && expr != nft_expr_last(rule)) {
++ while (expr != nft_expr_last(rule) && expr->ops) {
+ nf_tables_expr_destroy(ctx, expr);
+ expr = nft_expr_next(expr);
+ }
+diff --git a/net/netfilter/nft_queue.c b/net/netfilter/nft_queue.c
+index 96805d21d618..b204b7db515f 100644
+--- a/net/netfilter/nft_queue.c
++++ b/net/netfilter/nft_queue.c
+@@ -37,7 +37,7 @@ static void nft_queue_eval(const struct nft_expr *expr,
+
+ if (priv->queues_total > 1) {
+ if (priv->flags & NFT_QUEUE_FLAG_CPU_FANOUT) {
+- int cpu = smp_processor_id();
++ int cpu = raw_smp_processor_id();
+
+ queue = priv->queuenum + cpu % priv->queues_total;
+ } else {
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index 1c0d4aee783d..a5815be7c81c 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -2821,6 +2821,7 @@ int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
+
+ cb = &nlk->cb;
+ memset(cb, 0, sizeof(*cb));
++ cb->start = control->start;
+ cb->dump = control->dump;
+ cb->done = control->done;
+ cb->nlh = nlh;
+@@ -2834,6 +2835,9 @@ int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
+
+ mutex_unlock(nlk->cb_mutex);
+
++ if (cb->start)
++ cb->start(cb);
++
+ ret = netlink_dump(sk);
+ sock_put(sk);
+
+diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
+index 2ed5f964772e..3d111b053e3e 100644
+--- a/net/netlink/genetlink.c
++++ b/net/netlink/genetlink.c
+@@ -513,6 +513,20 @@ void *genlmsg_put(struct sk_buff *skb, u32 portid, u32 seq,
+ }
+ EXPORT_SYMBOL(genlmsg_put);
+
++static int genl_lock_start(struct netlink_callback *cb)
++{
++ /* our ops are always const - netlink API doesn't propagate that */
++ const struct genl_ops *ops = cb->data;
++ int rc = 0;
++
++ if (ops->start) {
++ genl_lock();
++ rc = ops->start(cb);
++ genl_unlock();
++ }
++ return rc;
++}
++
+ static int genl_lock_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
+ {
+ /* our ops are always const - netlink API doesn't propagate that */
+@@ -577,6 +591,7 @@ static int genl_family_rcv_msg(struct genl_family *family,
+ .module = family->module,
+ /* we have const, but the netlink API doesn't */
+ .data = (void *)ops,
++ .start = genl_lock_start,
+ .dump = genl_lock_dumpit,
+ .done = genl_lock_done,
+ };
+@@ -588,6 +603,7 @@ static int genl_family_rcv_msg(struct genl_family *family,
+ } else {
+ struct netlink_dump_control c = {
+ .module = family->module,
++ .start = ops->start,
+ .dump = ops->dumpit,
+ .done = ops->done,
+ };
+diff --git a/net/nfc/core.c b/net/nfc/core.c
+index 54596f609d04..ab4b1e1d186d 100644
+--- a/net/nfc/core.c
++++ b/net/nfc/core.c
+@@ -1093,7 +1093,7 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
+ err_free_dev:
+ kfree(dev);
+
+- return ERR_PTR(rc);
++ return NULL;
+ }
+ EXPORT_SYMBOL(nfc_allocate_device);
+
+diff --git a/net/rds/send.c b/net/rds/send.c
+index eba0eaf4cc38..37730bfa393f 100644
+--- a/net/rds/send.c
++++ b/net/rds/send.c
+@@ -932,6 +932,11 @@ static int rds_cmsg_send(struct rds_sock *rs, struct rds_message *rm,
+ ret = rds_cmsg_rdma_map(rs, rm, cmsg);
+ if (!ret)
+ *allocated_mr = 1;
++ else if (ret == -ENODEV)
++ /* Accommodate the get_mr() case which can fail
++ * if connection isn't established yet.
++ */
++ ret = -EAGAIN;
+ break;
+ case RDS_CMSG_ATOMIC_CSWP:
+ case RDS_CMSG_ATOMIC_FADD:
+@@ -1039,8 +1044,12 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
+
+ /* Parse any control messages the user may have included. */
+ ret = rds_cmsg_send(rs, rm, msg, &allocated_mr);
+- if (ret)
++ if (ret) {
++ /* Trigger connection so that its ready for the next retry */
++ if (ret == -EAGAIN)
++ rds_conn_connect_if_down(conn);
+ goto out;
++ }
+
+ if (rm->rdma.op_active && !conn->c_trans->xmit_rdma) {
+ printk_ratelimited(KERN_NOTICE "rdma_op %p conn xmit_rdma %p\n",
+diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
+index e1c69b216db3..dfc542ecf9c4 100644
+--- a/net/vmw_vsock/af_vsock.c
++++ b/net/vmw_vsock/af_vsock.c
+@@ -1209,10 +1209,14 @@ static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
+
+ if (signal_pending(current)) {
+ err = sock_intr_errno(timeout);
+- goto out_wait_error;
++ sk->sk_state = SS_UNCONNECTED;
++ sock->state = SS_UNCONNECTED;
++ goto out_wait;
+ } else if (timeout == 0) {
+ err = -ETIMEDOUT;
+- goto out_wait_error;
++ sk->sk_state = SS_UNCONNECTED;
++ sock->state = SS_UNCONNECTED;
++ goto out_wait;
+ }
+
+ prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
+@@ -1220,20 +1224,17 @@ static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
+
+ if (sk->sk_err) {
+ err = -sk->sk_err;
+- goto out_wait_error;
+- } else
++ sk->sk_state = SS_UNCONNECTED;
++ sock->state = SS_UNCONNECTED;
++ } else {
+ err = 0;
++ }
+
+ out_wait:
+ finish_wait(sk_sleep(sk), &wait);
+ out:
+ release_sock(sk);
+ return err;
+-
+-out_wait_error:
+- sk->sk_state = SS_UNCONNECTED;
+- sock->state = SS_UNCONNECTED;
+- goto out_wait;
+ }
+
+ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags)
+@@ -1270,18 +1271,20 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags)
+ listener->sk_err == 0) {
+ release_sock(listener);
+ timeout = schedule_timeout(timeout);
++ finish_wait(sk_sleep(listener), &wait);
+ lock_sock(listener);
+
+ if (signal_pending(current)) {
+ err = sock_intr_errno(timeout);
+- goto out_wait;
++ goto out;
+ } else if (timeout == 0) {
+ err = -EAGAIN;
+- goto out_wait;
++ goto out;
+ }
+
+ prepare_to_wait(sk_sleep(listener), &wait, TASK_INTERRUPTIBLE);
+ }
++ finish_wait(sk_sleep(listener), &wait);
+
+ if (listener->sk_err)
+ err = -listener->sk_err;
+@@ -1301,19 +1304,15 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags)
+ */
+ if (err) {
+ vconnected->rejected = true;
+- release_sock(connected);
+- sock_put(connected);
+- goto out_wait;
++ } else {
++ newsock->state = SS_CONNECTED;
++ sock_graft(connected, newsock);
+ }
+
+- newsock->state = SS_CONNECTED;
+- sock_graft(connected, newsock);
+ release_sock(connected);
+ sock_put(connected);
+ }
+
+-out_wait:
+- finish_wait(sk_sleep(listener), &wait);
+ out:
+ release_sock(listener);
+ return err;
+@@ -1513,8 +1512,7 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
+ long timeout;
+ int err;
+ struct vsock_transport_send_notify_data send_data;
+-
+- DEFINE_WAIT(wait);
++ DEFINE_WAIT_FUNC(wait, woken_wake_function);
+
+ sk = sock->sk;
+ vsk = vsock_sk(sk);
+@@ -1557,11 +1555,10 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
+ if (err < 0)
+ goto out;
+
+- prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
+-
+ while (total_written < len) {
+ ssize_t written;
+
++ add_wait_queue(sk_sleep(sk), &wait);
+ while (vsock_stream_has_space(vsk) == 0 &&
+ sk->sk_err == 0 &&
+ !(sk->sk_shutdown & SEND_SHUTDOWN) &&
+@@ -1570,27 +1567,30 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
+ /* Don't wait for non-blocking sockets. */
+ if (timeout == 0) {
+ err = -EAGAIN;
+- goto out_wait;
++ remove_wait_queue(sk_sleep(sk), &wait);
++ goto out_err;
+ }
+
+ err = transport->notify_send_pre_block(vsk, &send_data);
+- if (err < 0)
+- goto out_wait;
++ if (err < 0) {
++ remove_wait_queue(sk_sleep(sk), &wait);
++ goto out_err;
++ }
+
+ release_sock(sk);
+- timeout = schedule_timeout(timeout);
++ timeout = wait_woken(&wait, TASK_INTERRUPTIBLE, timeout);
+ lock_sock(sk);
+ if (signal_pending(current)) {
+ err = sock_intr_errno(timeout);
+- goto out_wait;
++ remove_wait_queue(sk_sleep(sk), &wait);
++ goto out_err;
+ } else if (timeout == 0) {
+ err = -EAGAIN;
+- goto out_wait;
++ remove_wait_queue(sk_sleep(sk), &wait);
++ goto out_err;
+ }
+-
+- prepare_to_wait(sk_sleep(sk), &wait,
+- TASK_INTERRUPTIBLE);
+ }
++ remove_wait_queue(sk_sleep(sk), &wait);
+
+ /* These checks occur both as part of and after the loop
+ * conditional since we need to check before and after
+@@ -1598,16 +1598,16 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
+ */
+ if (sk->sk_err) {
+ err = -sk->sk_err;
+- goto out_wait;
++ goto out_err;
+ } else if ((sk->sk_shutdown & SEND_SHUTDOWN) ||
+ (vsk->peer_shutdown & RCV_SHUTDOWN)) {
+ err = -EPIPE;
+- goto out_wait;
++ goto out_err;
+ }
+
+ err = transport->notify_send_pre_enqueue(vsk, &send_data);
+ if (err < 0)
+- goto out_wait;
++ goto out_err;
+
+ /* Note that enqueue will only write as many bytes as are free
+ * in the produce queue, so we don't need to ensure len is
+@@ -1620,7 +1620,7 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
+ len - total_written);
+ if (written < 0) {
+ err = -ENOMEM;
+- goto out_wait;
++ goto out_err;
+ }
+
+ total_written += written;
+@@ -1628,14 +1628,13 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
+ err = transport->notify_send_post_enqueue(
+ vsk, written, &send_data);
+ if (err < 0)
+- goto out_wait;
++ goto out_err;
+
+ }
+
+-out_wait:
++out_err:
+ if (total_written > 0)
+ err = total_written;
+- finish_wait(sk_sleep(sk), &wait);
+ out:
+ release_sock(sk);
+ return err;
+@@ -1716,21 +1715,61 @@ vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
+ if (err < 0)
+ goto out;
+
+- prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
+
+ while (1) {
+- s64 ready = vsock_stream_has_data(vsk);
++ s64 ready;
+
+- if (ready < 0) {
+- /* Invalid queue pair content. XXX This should be
+- * changed to a connection reset in a later change.
+- */
++ prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
++ ready = vsock_stream_has_data(vsk);
+
+- err = -ENOMEM;
+- goto out_wait;
+- } else if (ready > 0) {
++ if (ready == 0) {
++ if (sk->sk_err != 0 ||
++ (sk->sk_shutdown & RCV_SHUTDOWN) ||
++ (vsk->peer_shutdown & SEND_SHUTDOWN)) {
++ finish_wait(sk_sleep(sk), &wait);
++ break;
++ }
++ /* Don't wait for non-blocking sockets. */
++ if (timeout == 0) {
++ err = -EAGAIN;
++ finish_wait(sk_sleep(sk), &wait);
++ break;
++ }
++
++ err = transport->notify_recv_pre_block(
++ vsk, target, &recv_data);
++ if (err < 0) {
++ finish_wait(sk_sleep(sk), &wait);
++ break;
++ }
++ release_sock(sk);
++ timeout = schedule_timeout(timeout);
++ lock_sock(sk);
++
++ if (signal_pending(current)) {
++ err = sock_intr_errno(timeout);
++ finish_wait(sk_sleep(sk), &wait);
++ break;
++ } else if (timeout == 0) {
++ err = -EAGAIN;
++ finish_wait(sk_sleep(sk), &wait);
++ break;
++ }
++ } else {
+ ssize_t read;
+
++ finish_wait(sk_sleep(sk), &wait);
++
++ if (ready < 0) {
++ /* Invalid queue pair content. XXX This should
++ * be changed to a connection reset in a later
++ * change.
++ */
++
++ err = -ENOMEM;
++ goto out;
++ }
++
+ err = transport->notify_recv_pre_dequeue(
+ vsk, target, &recv_data);
+ if (err < 0)
+@@ -1750,42 +1789,12 @@ vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
+ vsk, target, read,
+ !(flags & MSG_PEEK), &recv_data);
+ if (err < 0)
+- goto out_wait;
++ goto out;
+
+ if (read >= target || flags & MSG_PEEK)
+ break;
+
+ target -= read;
+- } else {
+- if (sk->sk_err != 0 || (sk->sk_shutdown & RCV_SHUTDOWN)
+- || (vsk->peer_shutdown & SEND_SHUTDOWN)) {
+- break;
+- }
+- /* Don't wait for non-blocking sockets. */
+- if (timeout == 0) {
+- err = -EAGAIN;
+- break;
+- }
+-
+- err = transport->notify_recv_pre_block(
+- vsk, target, &recv_data);
+- if (err < 0)
+- break;
+-
+- release_sock(sk);
+- timeout = schedule_timeout(timeout);
+- lock_sock(sk);
+-
+- if (signal_pending(current)) {
+- err = sock_intr_errno(timeout);
+- break;
+- } else if (timeout == 0) {
+- err = -EAGAIN;
+- break;
+- }
+-
+- prepare_to_wait(sk_sleep(sk), &wait,
+- TASK_INTERRUPTIBLE);
+ }
+ }
+
+@@ -1797,8 +1806,6 @@ vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
+ if (copied > 0)
+ err = copied;
+
+-out_wait:
+- finish_wait(sk_sleep(sk), &wait);
+ out:
+ release_sock(sk);
+ return err;
+diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
+index 2091664295ba..18d9cf2eb648 100644
+--- a/net/xfrm/xfrm_user.c
++++ b/net/xfrm/xfrm_user.c
+@@ -1622,32 +1622,34 @@ static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr
+
+ static int xfrm_dump_policy_done(struct netlink_callback *cb)
+ {
+- struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1];
++ struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
+ struct net *net = sock_net(cb->skb->sk);
+
+ xfrm_policy_walk_done(walk, net);
+ return 0;
+ }
+
++static int xfrm_dump_policy_start(struct netlink_callback *cb)
++{
++ struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
++
++ BUILD_BUG_ON(sizeof(*walk) > sizeof(cb->args));
++
++ xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY);
++ return 0;
++}
++
+ static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
+ {
+ struct net *net = sock_net(skb->sk);
+- struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1];
++ struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
+ struct xfrm_dump_info info;
+
+- BUILD_BUG_ON(sizeof(struct xfrm_policy_walk) >
+- sizeof(cb->args) - sizeof(cb->args[0]));
+-
+ info.in_skb = cb->skb;
+ info.out_skb = skb;
+ info.nlmsg_seq = cb->nlh->nlmsg_seq;
+ info.nlmsg_flags = NLM_F_MULTI;
+
+- if (!cb->args[0]) {
+- cb->args[0] = 1;
+- xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY);
+- }
+-
+ (void) xfrm_policy_walk(net, walk, dump_one_policy, &info);
+
+ return skb->len;
+@@ -2383,6 +2385,7 @@ static const struct nla_policy xfrma_spd_policy[XFRMA_SPD_MAX+1] = {
+
+ static const struct xfrm_link {
+ int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **);
++ int (*start)(struct netlink_callback *);
+ int (*dump)(struct sk_buff *, struct netlink_callback *);
+ int (*done)(struct netlink_callback *);
+ const struct nla_policy *nla_pol;
+@@ -2396,6 +2399,7 @@ static const struct xfrm_link {
+ [XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_add_policy },
+ [XFRM_MSG_DELPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy },
+ [XFRM_MSG_GETPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy,
++ .start = xfrm_dump_policy_start,
+ .dump = xfrm_dump_policy,
+ .done = xfrm_dump_policy_done },
+ [XFRM_MSG_ALLOCSPI - XFRM_MSG_BASE] = { .doit = xfrm_alloc_userspi },
+@@ -2447,6 +2451,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
+
+ {
+ struct netlink_dump_control c = {
++ .start = link->start,
+ .dump = link->dump,
+ .done = link->done,
+ };
+diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
+index 253a2da05cf0..9a7cc9a56a21 100644
+--- a/sound/core/pcm_lib.c
++++ b/sound/core/pcm_lib.c
+@@ -264,8 +264,10 @@ static void update_audio_tstamp(struct snd_pcm_substream *substream,
+ runtime->rate);
+ *audio_tstamp = ns_to_timespec(audio_nsecs);
+ }
+- runtime->status->audio_tstamp = *audio_tstamp;
+- runtime->status->tstamp = *curr_tstamp;
++ if (!timespec_equal(&runtime->status->audio_tstamp, audio_tstamp)) {
++ runtime->status->audio_tstamp = *audio_tstamp;
++ runtime->status->tstamp = *curr_tstamp;
++ }
+
+ /*
+ * re-take a driver timestamp to let apps detect if the reference tstamp
+diff --git a/sound/core/timer_compat.c b/sound/core/timer_compat.c
+index 0b4b028e8e98..de9155eed727 100644
+--- a/sound/core/timer_compat.c
++++ b/sound/core/timer_compat.c
+@@ -40,11 +40,11 @@ static int snd_timer_user_info_compat(struct file *file,
+ struct snd_timer *t;
+
+ tu = file->private_data;
+- if (snd_BUG_ON(!tu->timeri))
+- return -ENXIO;
++ if (!tu->timeri)
++ return -EBADFD;
+ t = tu->timeri->timer;
+- if (snd_BUG_ON(!t))
+- return -ENXIO;
++ if (!t)
++ return -EBADFD;
+ memset(&info, 0, sizeof(info));
+ info.card = t->card ? t->card->number : -1;
+ if (t->hw.flags & SNDRV_TIMER_HW_SLAVE)
+@@ -73,8 +73,8 @@ static int snd_timer_user_status_compat(struct file *file,
+ struct snd_timer_status32 status;
+
+ tu = file->private_data;
+- if (snd_BUG_ON(!tu->timeri))
+- return -ENXIO;
++ if (!tu->timeri)
++ return -EBADFD;
+ memset(&status, 0, sizeof(status));
+ status.tstamp.tv_sec = tu->tstamp.tv_sec;
+ status.tstamp.tv_nsec = tu->tstamp.tv_nsec;
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index 68bd0ba8bab8..b8886d493083 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -2126,6 +2126,9 @@ static const struct pci_device_id azx_ids[] = {
+ /* AMD Hudson */
+ { PCI_DEVICE(0x1022, 0x780d),
+ .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
++ /* AMD Raven */
++ { PCI_DEVICE(0x1022, 0x15e3),
++ .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
+ /* ATI HDMI */
+ { PCI_DEVICE(0x1002, 0x0002),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 55601ce89e0f..75c4e14f4156 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4297,7 +4297,7 @@ static void alc_no_shutup(struct hda_codec *codec)
+ static void alc_fixup_no_shutup(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+ {
+- if (action == HDA_FIXUP_ACT_PRE_PROBE) {
++ if (action == HDA_FIXUP_ACT_PROBE) {
+ struct alc_spec *spec = codec->spec;
+ spec->shutup = alc_no_shutup;
+ }
+diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
+index 431d94397219..21a2f1bd7369 100644
+--- a/sound/soc/codecs/wm_adsp.c
++++ b/sound/soc/codecs/wm_adsp.c
+@@ -533,7 +533,7 @@ static int wm_adsp_load(struct wm_adsp *dsp)
+ const struct wmfw_region *region;
+ const struct wm_adsp_region *mem;
+ const char *region_name;
+- char *file, *text;
++ char *file, *text = NULL;
+ struct wm_adsp_buf *buf;
+ unsigned int reg;
+ int regions = 0;
+@@ -678,10 +678,21 @@ static int wm_adsp_load(struct wm_adsp *dsp)
+ regions, le32_to_cpu(region->len), offset,
+ region_name);
+
++ if ((pos + le32_to_cpu(region->len) + sizeof(*region)) >
++ firmware->size) {
++ adsp_err(dsp,
++ "%s.%d: %s region len %d bytes exceeds file length %zu\n",
++ file, regions, region_name,
++ le32_to_cpu(region->len), firmware->size);
++ ret = -EINVAL;
++ goto out_fw;
++ }
++
+ if (text) {
+ memcpy(text, region->data, le32_to_cpu(region->len));
+ adsp_info(dsp, "%s: %s\n", file, text);
+ kfree(text);
++ text = NULL;
+ }
+
+ if (reg) {
+@@ -724,6 +735,7 @@ out_fw:
+ regmap_async_complete(regmap);
+ wm_adsp_buf_free(&buf_list);
+ release_firmware(firmware);
++ kfree(text);
+ out:
+ kfree(file);
+
+@@ -1312,6 +1324,17 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
+ }
+
+ if (reg) {
++ if ((pos + le32_to_cpu(blk->len) + sizeof(*blk)) >
++ firmware->size) {
++ adsp_err(dsp,
++ "%s.%d: %s region len %d bytes exceeds file length %zu\n",
++ file, blocks, region_name,
++ le32_to_cpu(blk->len),
++ firmware->size);
++ ret = -EINVAL;
++ goto out_fw;
++ }
++
+ buf = wm_adsp_buf_alloc(blk->data,
+ le32_to_cpu(blk->len),
+ &buf_list);
+diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
+index 9f48d75fa992..9a198248e6cb 100644
+--- a/sound/soc/sh/rcar/core.c
++++ b/sound/soc/sh/rcar/core.c
+@@ -850,10 +850,8 @@ static int __rsnd_kctrl_new(struct rsnd_mod *mod,
+ return -ENOMEM;
+
+ ret = snd_ctl_add(card, kctrl);
+- if (ret < 0) {
+- snd_ctl_free_one(kctrl);
++ if (ret < 0)
+ return ret;
+- }
+
+ cfg->update = update;
+ cfg->card = card;
+diff --git a/sound/usb/clock.c b/sound/usb/clock.c
+index 7ccbcaf6a147..66294eb64501 100644
+--- a/sound/usb/clock.c
++++ b/sound/usb/clock.c
+@@ -43,7 +43,7 @@ static struct uac_clock_source_descriptor *
+ while ((cs = snd_usb_find_csint_desc(ctrl_iface->extra,
+ ctrl_iface->extralen,
+ cs, UAC2_CLOCK_SOURCE))) {
+- if (cs->bClockID == clock_id)
++ if (cs->bLength >= sizeof(*cs) && cs->bClockID == clock_id)
+ return cs;
+ }
+
+@@ -59,8 +59,11 @@ static struct uac_clock_selector_descriptor *
+ while ((cs = snd_usb_find_csint_desc(ctrl_iface->extra,
+ ctrl_iface->extralen,
+ cs, UAC2_CLOCK_SELECTOR))) {
+- if (cs->bClockID == clock_id)
++ if (cs->bLength >= sizeof(*cs) && cs->bClockID == clock_id) {
++ if (cs->bLength < 5 + cs->bNrInPins)
++ return NULL;
+ return cs;
++ }
+ }
+
+ return NULL;
+@@ -75,7 +78,7 @@ static struct uac_clock_multiplier_descriptor *
+ while ((cs = snd_usb_find_csint_desc(ctrl_iface->extra,
+ ctrl_iface->extralen,
+ cs, UAC2_CLOCK_MULTIPLIER))) {
+- if (cs->bClockID == clock_id)
++ if (cs->bLength >= sizeof(*cs) && cs->bClockID == clock_id)
+ return cs;
+ }
+
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index cb0ef39adc36..3ebfaa527825 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -1391,6 +1391,12 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
+ __u8 *bmaControls;
+
+ if (state->mixer->protocol == UAC_VERSION_1) {
++ if (hdr->bLength < 7) {
++ usb_audio_err(state->chip,
++ "unit %u: invalid UAC_FEATURE_UNIT descriptor\n",
++ unitid);
++ return -EINVAL;
++ }
+ csize = hdr->bControlSize;
+ if (!csize) {
+ usb_audio_dbg(state->chip,
+@@ -1408,6 +1414,12 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
+ }
+ } else {
+ struct uac2_feature_unit_descriptor *ftr = _ftr;
++ if (hdr->bLength < 6) {
++ usb_audio_err(state->chip,
++ "unit %u: invalid UAC_FEATURE_UNIT descriptor\n",
++ unitid);
++ return -EINVAL;
++ }
+ csize = 4;
+ channels = (hdr->bLength - 6) / 4 - 1;
+ bmaControls = ftr->bmaControls;
+@@ -2008,7 +2020,8 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid,
+ const struct usbmix_name_map *map;
+ char **namelist;
+
+- if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) {
++ if (desc->bLength < 5 || !desc->bNrInPins ||
++ desc->bLength < 5 + desc->bNrInPins) {
+ usb_audio_err(state->chip,
+ "invalid SELECTOR UNIT descriptor %d\n", unitid);
+ return -EINVAL;
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-12-08 14:48 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-12-08 14:48 UTC (permalink / raw
To: gentoo-commits
commit: ca5583f1a2b0ded411d4436cb5f0a2e6b431d5cd
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Dec 8 14:48:13 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Dec 8 14:48:13 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=ca5583f1
Removal of redundant patchset
0000_README | 4 -
2400_BT-check-L2CAP-buffer-length.patch | 357 --------------------------------
2 files changed, 361 deletions(-)
diff --git a/0000_README b/0000_README
index 85f04e7..b37932b 100644
--- a/0000_README
+++ b/0000_README
@@ -247,10 +247,6 @@ Patch: 1800_fix-lru-cache-add-oom-regression.patch
From: http://thread.gmane.org/gmane.linux.kernel.stable/184384
Desc: Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
-Patch: 2400_BT-check-L2CAP-buffer-length.patch
-From: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e860d2c904d1a9f38a24eb44c9f34b8f915a6ea3
-Desc: Validate the output buffer length for L2CAP config reqs and resps to avoid stack buffer overflowing. CVE-2017-1000251. See bug #630840
-
Patch: 2700_ThinkPad-30-brightness-control-fix.patch
From: Seth Forshee <seth.forshee@canonical.com>
Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
diff --git a/2400_BT-check-L2CAP-buffer-length.patch b/2400_BT-check-L2CAP-buffer-length.patch
deleted file mode 100644
index c6bfdf7..0000000
--- a/2400_BT-check-L2CAP-buffer-length.patch
+++ /dev/null
@@ -1,357 +0,0 @@
-From e860d2c904d1a9f38a24eb44c9f34b8f915a6ea3 Mon Sep 17 00:00:00 2001
-From: Ben Seri <ben@armis.com>
-Date: Sat, 9 Sep 2017 23:15:59 +0200
-Subject: Bluetooth: Properly check L2CAP config option output buffer length
-
-Validate the output buffer length for L2CAP config requests and responses
-to avoid overflowing the stack buffer used for building the option blocks.
-
-Cc: stable@vger.kernel.org
-Signed-off-by: Ben Seri <ben@armis.com>
-Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
-Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
----
- net/bluetooth/l2cap_core.c | 80 +++++++++++++++++++++++++---------------------
- 1 file changed, 43 insertions(+), 37 deletions(-)
-
-diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
-index 303c779..43ba91c 100644
---- a/net/bluetooth/l2cap_core.c
-+++ b/net/bluetooth/l2cap_core.c
-@@ -58,7 +58,7 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
- u8 code, u8 ident, u16 dlen, void *data);
- static void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len,
- void *data);
--static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data);
-+static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data, size_t data_size);
- static void l2cap_send_disconn_req(struct l2cap_chan *chan, int err);
-
- static void l2cap_tx(struct l2cap_chan *chan, struct l2cap_ctrl *control,
-@@ -1473,7 +1473,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
-
- set_bit(CONF_REQ_SENT, &chan->conf_state);
- l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-- l2cap_build_conf_req(chan, buf), buf);
-+ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
- chan->num_conf_req++;
- }
-
-@@ -2987,12 +2987,15 @@ static inline int l2cap_get_conf_opt(void **ptr, int *type, int *olen,
- return len;
- }
-
--static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
-+static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val, size_t size)
- {
- struct l2cap_conf_opt *opt = *ptr;
-
- BT_DBG("type 0x%2.2x len %u val 0x%lx", type, len, val);
-
-+ if (size < L2CAP_CONF_OPT_SIZE + len)
-+ return;
-+
- opt->type = type;
- opt->len = len;
-
-@@ -3017,7 +3020,7 @@ static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
- *ptr += L2CAP_CONF_OPT_SIZE + len;
- }
-
--static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan)
-+static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan, size_t size)
- {
- struct l2cap_conf_efs efs;
-
-@@ -3045,7 +3048,7 @@ static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan)
- }
-
- l2cap_add_conf_opt(ptr, L2CAP_CONF_EFS, sizeof(efs),
-- (unsigned long) &efs);
-+ (unsigned long) &efs, size);
- }
-
- static void l2cap_ack_timeout(struct work_struct *work)
-@@ -3191,11 +3194,12 @@ static inline void l2cap_txwin_setup(struct l2cap_chan *chan)
- chan->ack_win = chan->tx_win;
- }
-
--static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
-+static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data, size_t data_size)
- {
- struct l2cap_conf_req *req = data;
- struct l2cap_conf_rfc rfc = { .mode = chan->mode };
- void *ptr = req->data;
-+ void *endptr = data + data_size;
- u16 size;
-
- BT_DBG("chan %p", chan);
-@@ -3220,7 +3224,7 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
-
- done:
- if (chan->imtu != L2CAP_DEFAULT_MTU)
-- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
-+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu, endptr - ptr);
-
- switch (chan->mode) {
- case L2CAP_MODE_BASIC:
-@@ -3239,7 +3243,7 @@ done:
- rfc.max_pdu_size = 0;
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
-- (unsigned long) &rfc);
-+ (unsigned long) &rfc, endptr - ptr);
- break;
-
- case L2CAP_MODE_ERTM:
-@@ -3259,21 +3263,21 @@ done:
- L2CAP_DEFAULT_TX_WINDOW);
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
-- (unsigned long) &rfc);
-+ (unsigned long) &rfc, endptr - ptr);
-
- if (test_bit(FLAG_EFS_ENABLE, &chan->flags))
-- l2cap_add_opt_efs(&ptr, chan);
-+ l2cap_add_opt_efs(&ptr, chan, endptr - ptr);
-
- if (test_bit(FLAG_EXT_CTRL, &chan->flags))
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS, 2,
-- chan->tx_win);
-+ chan->tx_win, endptr - ptr);
-
- if (chan->conn->feat_mask & L2CAP_FEAT_FCS)
- if (chan->fcs == L2CAP_FCS_NONE ||
- test_bit(CONF_RECV_NO_FCS, &chan->conf_state)) {
- chan->fcs = L2CAP_FCS_NONE;
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1,
-- chan->fcs);
-+ chan->fcs, endptr - ptr);
- }
- break;
-
-@@ -3291,17 +3295,17 @@ done:
- rfc.max_pdu_size = cpu_to_le16(size);
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
-- (unsigned long) &rfc);
-+ (unsigned long) &rfc, endptr - ptr);
-
- if (test_bit(FLAG_EFS_ENABLE, &chan->flags))
-- l2cap_add_opt_efs(&ptr, chan);
-+ l2cap_add_opt_efs(&ptr, chan, endptr - ptr);
-
- if (chan->conn->feat_mask & L2CAP_FEAT_FCS)
- if (chan->fcs == L2CAP_FCS_NONE ||
- test_bit(CONF_RECV_NO_FCS, &chan->conf_state)) {
- chan->fcs = L2CAP_FCS_NONE;
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1,
-- chan->fcs);
-+ chan->fcs, endptr - ptr);
- }
- break;
- }
-@@ -3312,10 +3316,11 @@ done:
- return ptr - data;
- }
-
--static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data)
-+static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data, size_t data_size)
- {
- struct l2cap_conf_rsp *rsp = data;
- void *ptr = rsp->data;
-+ void *endptr = data + data_size;
- void *req = chan->conf_req;
- int len = chan->conf_len;
- int type, hint, olen;
-@@ -3417,7 +3422,7 @@ done:
- return -ECONNREFUSED;
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
-- (unsigned long) &rfc);
-+ (unsigned long) &rfc, endptr - ptr);
- }
-
- if (result == L2CAP_CONF_SUCCESS) {
-@@ -3430,7 +3435,7 @@ done:
- chan->omtu = mtu;
- set_bit(CONF_MTU_DONE, &chan->conf_state);
- }
-- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu);
-+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu, endptr - ptr);
-
- if (remote_efs) {
- if (chan->local_stype != L2CAP_SERV_NOTRAFIC &&
-@@ -3444,7 +3449,7 @@ done:
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
- sizeof(efs),
-- (unsigned long) &efs);
-+ (unsigned long) &efs, endptr - ptr);
- } else {
- /* Send PENDING Conf Rsp */
- result = L2CAP_CONF_PENDING;
-@@ -3477,7 +3482,7 @@ done:
- set_bit(CONF_MODE_DONE, &chan->conf_state);
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-- sizeof(rfc), (unsigned long) &rfc);
-+ sizeof(rfc), (unsigned long) &rfc, endptr - ptr);
-
- if (test_bit(FLAG_EFS_ENABLE, &chan->flags)) {
- chan->remote_id = efs.id;
-@@ -3491,7 +3496,7 @@ done:
- le32_to_cpu(efs.sdu_itime);
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
- sizeof(efs),
-- (unsigned long) &efs);
-+ (unsigned long) &efs, endptr - ptr);
- }
- break;
-
-@@ -3505,7 +3510,7 @@ done:
- set_bit(CONF_MODE_DONE, &chan->conf_state);
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
-- (unsigned long) &rfc);
-+ (unsigned long) &rfc, endptr - ptr);
-
- break;
-
-@@ -3527,10 +3532,11 @@ done:
- }
-
- static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
-- void *data, u16 *result)
-+ void *data, size_t size, u16 *result)
- {
- struct l2cap_conf_req *req = data;
- void *ptr = req->data;
-+ void *endptr = data + size;
- int type, olen;
- unsigned long val;
- struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
-@@ -3548,13 +3554,13 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
- chan->imtu = L2CAP_DEFAULT_MIN_MTU;
- } else
- chan->imtu = val;
-- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
-+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu, endptr - ptr);
- break;
-
- case L2CAP_CONF_FLUSH_TO:
- chan->flush_to = val;
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO,
-- 2, chan->flush_to);
-+ 2, chan->flush_to, endptr - ptr);
- break;
-
- case L2CAP_CONF_RFC:
-@@ -3568,13 +3574,13 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
- chan->fcs = 0;
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-- sizeof(rfc), (unsigned long) &rfc);
-+ sizeof(rfc), (unsigned long) &rfc, endptr - ptr);
- break;
-
- case L2CAP_CONF_EWS:
- chan->ack_win = min_t(u16, val, chan->ack_win);
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS, 2,
-- chan->tx_win);
-+ chan->tx_win, endptr - ptr);
- break;
-
- case L2CAP_CONF_EFS:
-@@ -3587,7 +3593,7 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
- return -ECONNREFUSED;
-
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs),
-- (unsigned long) &efs);
-+ (unsigned long) &efs, endptr - ptr);
- break;
-
- case L2CAP_CONF_FCS:
-@@ -3692,7 +3698,7 @@ void __l2cap_connect_rsp_defer(struct l2cap_chan *chan)
- return;
-
- l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-- l2cap_build_conf_req(chan, buf), buf);
-+ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
- chan->num_conf_req++;
- }
-
-@@ -3900,7 +3906,7 @@ sendresp:
- u8 buf[128];
- set_bit(CONF_REQ_SENT, &chan->conf_state);
- l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-- l2cap_build_conf_req(chan, buf), buf);
-+ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
- chan->num_conf_req++;
- }
-
-@@ -3978,7 +3984,7 @@ static int l2cap_connect_create_rsp(struct l2cap_conn *conn,
- break;
-
- l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-- l2cap_build_conf_req(chan, req), req);
-+ l2cap_build_conf_req(chan, req, sizeof(req)), req);
- chan->num_conf_req++;
- break;
-
-@@ -4090,7 +4096,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
- }
-
- /* Complete config. */
-- len = l2cap_parse_conf_req(chan, rsp);
-+ len = l2cap_parse_conf_req(chan, rsp, sizeof(rsp));
- if (len < 0) {
- l2cap_send_disconn_req(chan, ECONNRESET);
- goto unlock;
-@@ -4124,7 +4130,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
- if (!test_and_set_bit(CONF_REQ_SENT, &chan->conf_state)) {
- u8 buf[64];
- l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-- l2cap_build_conf_req(chan, buf), buf);
-+ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
- chan->num_conf_req++;
- }
-
-@@ -4184,7 +4190,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn,
- char buf[64];
-
- len = l2cap_parse_conf_rsp(chan, rsp->data, len,
-- buf, &result);
-+ buf, sizeof(buf), &result);
- if (len < 0) {
- l2cap_send_disconn_req(chan, ECONNRESET);
- goto done;
-@@ -4214,7 +4220,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn,
- /* throw out any old stored conf requests */
- result = L2CAP_CONF_SUCCESS;
- len = l2cap_parse_conf_rsp(chan, rsp->data, len,
-- req, &result);
-+ req, sizeof(req), &result);
- if (len < 0) {
- l2cap_send_disconn_req(chan, ECONNRESET);
- goto done;
-@@ -4791,7 +4797,7 @@ static void l2cap_do_create(struct l2cap_chan *chan, int result,
- set_bit(CONF_REQ_SENT, &chan->conf_state);
- l2cap_send_cmd(chan->conn, l2cap_get_ident(chan->conn),
- L2CAP_CONF_REQ,
-- l2cap_build_conf_req(chan, buf), buf);
-+ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
- chan->num_conf_req++;
- }
- }
-@@ -7465,7 +7471,7 @@ static void l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
- set_bit(CONF_REQ_SENT, &chan->conf_state);
- l2cap_send_cmd(conn, l2cap_get_ident(conn),
- L2CAP_CONF_REQ,
-- l2cap_build_conf_req(chan, buf),
-+ l2cap_build_conf_req(chan, buf, sizeof(buf)),
- buf);
- chan->num_conf_req++;
- }
---
-cgit v1.1
-
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-12-07 18:53 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-12-07 18:53 UTC (permalink / raw
To: gentoo-commits
commit: 54acffba0b4c473f2da2098df12e5b6b053602a2
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Dec 7 18:53:29 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Dec 7 18:53:29 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=54acffba
Linux patch 4.1.46 and 4.1.47
0000_README | 8 +
1045_linux-4.1.46.patch | 6685 +++++++++++++++++++++++++++++++++++++++++++++++
1046_linux-4.1.47.patch | 5346 +++++++++++++++++++++++++++++++++++++
3 files changed, 12039 insertions(+)
diff --git a/0000_README b/0000_README
index 43ea8eb..85f04e7 100644
--- a/0000_README
+++ b/0000_README
@@ -223,6 +223,14 @@ Patch: 1044_linux-4.1.45.patch
From: http://www.kernel.org
Desc: Linux 4.1.45
+Patch: 1045_linux-4.1.46.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.46
+
+Patch: 1046_linux-4.1.47.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.47
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1045_linux-4.1.46.patch b/1045_linux-4.1.46.patch
new file mode 100644
index 0000000..9a7f15d
--- /dev/null
+++ b/1045_linux-4.1.46.patch
@@ -0,0 +1,6685 @@
+diff --git a/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
+new file mode 100644
+index 000000000000..6ec1a880ac18
+--- /dev/null
++++ b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
+@@ -0,0 +1,46 @@
++THS8135 Video DAC
++-----------------
++
++This is the binding for Texas Instruments THS8135 Video DAC bridge.
++
++Required properties:
++
++- compatible: Must be "ti,ths8135"
++
++Required nodes:
++
++This device has two video ports. Their connections are modelled using the OF
++graph bindings specified in Documentation/devicetree/bindings/graph.txt.
++
++- Video port 0 for RGB input
++- Video port 1 for VGA output
++
++Example
++-------
++
++vga-bridge {
++ compatible = "ti,ths8135";
++ #address-cells = <1>;
++ #size-cells = <0>;
++
++ ports {
++ #address-cells = <1>;
++ #size-cells = <0>;
++
++ port@0 {
++ reg = <0>;
++
++ vga_bridge_in: endpoint {
++ remote-endpoint = <&lcdc_out_vga>;
++ };
++ };
++
++ port@1 {
++ reg = <1>;
++
++ vga_bridge_out: endpoint {
++ remote-endpoint = <&vga_con_in>;
++ };
++ };
++ };
++};
+diff --git a/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt
+new file mode 100644
+index 000000000000..b3629405f568
+--- /dev/null
++++ b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt
+@@ -0,0 +1,18 @@
++* AVIA HX711 ADC chip for weight cells
++ Bit-banging driver
++
++Required properties:
++ - compatible: Should be "avia,hx711"
++ - sck-gpios: Definition of the GPIO for the clock
++ - dout-gpios: Definition of the GPIO for data-out
++ See Documentation/devicetree/bindings/gpio/gpio.txt
++ - avdd-supply: Definition of the regulator used as analog supply
++
++Example:
++weight@0 {
++ compatible = "avia,hx711";
++ sck-gpios = <&gpio3 10 GPIO_ACTIVE_HIGH>;
++ dout-gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>;
++ avdd-suppy = <&avdd>;
++};
++
+diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
+index 80339192c93e..6a7fa617b07a 100644
+--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
++++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
+@@ -31,6 +31,7 @@ asahi-kasei Asahi Kasei Corp.
+ atmel Atmel Corporation
+ auo AU Optronics Corporation
+ avago Avago Technologies
++avia avia semiconductor
+ avic Shanghai AVIC Optoelectronics Co., Ltd.
+ axis Axis Communications AB
+ bosch Bosch Sensortec GmbH
+diff --git a/Makefile b/Makefile
+index d4c064604058..1b4148baf398 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 45
++SUBLEVEL = 46
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/Kconfig-nommu b/arch/arm/Kconfig-nommu
+index aed66d5df7f1..b7576349528c 100644
+--- a/arch/arm/Kconfig-nommu
++++ b/arch/arm/Kconfig-nommu
+@@ -34,8 +34,7 @@ config PROCESSOR_ID
+ used instead of the auto-probing which utilizes the register.
+
+ config REMAP_VECTORS_TO_RAM
+- bool 'Install vectors to the beginning of RAM' if DRAM_BASE
+- depends on DRAM_BASE
++ bool 'Install vectors to the beginning of RAM'
+ help
+ The kernel needs to change the hardware exception vectors.
+ In nommu mode, the hardware exception vectors are normally
+diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
+index b346b35f827d..e9bef82bff42 100644
+--- a/arch/arm64/kernel/head.S
++++ b/arch/arm64/kernel/head.S
+@@ -502,6 +502,7 @@ ENDPROC(__mmap_switched)
+ * booted in EL1 or EL2 respectively.
+ */
+ ENTRY(el2_setup)
++ msr SPsel, #1 // We want to use SP_EL{1,2}
+ mrs x0, CurrentEL
+ cmp x0, #CurrentEL_EL2
+ b.ne 1f
+diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
+index 3b46f7ce9ca7..77733b403c09 100644
+--- a/arch/mips/kernel/vmlinux.lds.S
++++ b/arch/mips/kernel/vmlinux.lds.S
+@@ -141,7 +141,7 @@ SECTIONS
+ * Force .bss to 64K alignment so that .bss..swapper_pg_dir
+ * gets that alignment. .sbss should be empty, so there will be
+ * no holes after __init_end. */
+- BSS_SECTION(0, 0x10000, 0)
++ BSS_SECTION(0, 0x10000, 8)
+
+ _end = . ;
+
+diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
+index ba0c053e25ae..2a2fff407ac4 100644
+--- a/arch/parisc/kernel/perf.c
++++ b/arch/parisc/kernel/perf.c
+@@ -39,7 +39,7 @@
+ * the PDC INTRIGUE calls. This is done to eliminate bugs introduced
+ * in various PDC revisions. The code is much more maintainable
+ * and reliable this way vs having to debug on every version of PDC
+- * on every box.
++ * on every box.
+ */
+
+ #include <linux/capability.h>
+@@ -195,8 +195,8 @@ static int perf_config(uint32_t *image_ptr);
+ static int perf_release(struct inode *inode, struct file *file);
+ static int perf_open(struct inode *inode, struct file *file);
+ static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos);
+-static ssize_t perf_write(struct file *file, const char __user *buf, size_t count,
+- loff_t *ppos);
++static ssize_t perf_write(struct file *file, const char __user *buf,
++ size_t count, loff_t *ppos);
+ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+ static void perf_start_counters(void);
+ static int perf_stop_counters(uint32_t *raddr);
+@@ -222,7 +222,7 @@ extern void perf_intrigue_disable_perf_counters (void);
+ /*
+ * configure:
+ *
+- * Configure the cpu with a given data image. First turn off the counters,
++ * Configure the cpu with a given data image. First turn off the counters,
+ * then download the image, then turn the counters back on.
+ */
+ static int perf_config(uint32_t *image_ptr)
+@@ -234,7 +234,7 @@ static int perf_config(uint32_t *image_ptr)
+ error = perf_stop_counters(raddr);
+ if (error != 0) {
+ printk("perf_config: perf_stop_counters = %ld\n", error);
+- return -EINVAL;
++ return -EINVAL;
+ }
+
+ printk("Preparing to write image\n");
+@@ -242,7 +242,7 @@ printk("Preparing to write image\n");
+ error = perf_write_image((uint64_t *)image_ptr);
+ if (error != 0) {
+ printk("perf_config: DOWNLOAD = %ld\n", error);
+- return -EINVAL;
++ return -EINVAL;
+ }
+
+ printk("Preparing to start counters\n");
+@@ -254,7 +254,7 @@ printk("Preparing to start counters\n");
+ }
+
+ /*
+- * Open the device and initialize all of its memory. The device is only
++ * Open the device and initialize all of its memory. The device is only
+ * opened once, but can be "queried" by multiple processes that know its
+ * file descriptor.
+ */
+@@ -298,8 +298,8 @@ static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t
+ * called on the processor that the download should happen
+ * on.
+ */
+-static ssize_t perf_write(struct file *file, const char __user *buf, size_t count,
+- loff_t *ppos)
++static ssize_t perf_write(struct file *file, const char __user *buf,
++ size_t count, loff_t *ppos)
+ {
+ int err;
+ size_t image_size;
+@@ -307,11 +307,11 @@ static ssize_t perf_write(struct file *file, const char __user *buf, size_t coun
+ uint32_t interface_type;
+ uint32_t test;
+
+- if (perf_processor_interface == ONYX_INTF)
++ if (perf_processor_interface == ONYX_INTF)
+ image_size = PCXU_IMAGE_SIZE;
+- else if (perf_processor_interface == CUDA_INTF)
++ else if (perf_processor_interface == CUDA_INTF)
+ image_size = PCXW_IMAGE_SIZE;
+- else
++ else
+ return -EFAULT;
+
+ if (!capable(CAP_SYS_ADMIN))
+@@ -331,22 +331,22 @@ static ssize_t perf_write(struct file *file, const char __user *buf, size_t coun
+
+ /* First check the machine type is correct for
+ the requested image */
+- if (((perf_processor_interface == CUDA_INTF) &&
+- (interface_type != CUDA_INTF)) ||
+- ((perf_processor_interface == ONYX_INTF) &&
+- (interface_type != ONYX_INTF)))
++ if (((perf_processor_interface == CUDA_INTF) &&
++ (interface_type != CUDA_INTF)) ||
++ ((perf_processor_interface == ONYX_INTF) &&
++ (interface_type != ONYX_INTF)))
+ return -EINVAL;
+
+ /* Next check to make sure the requested image
+ is valid */
+- if (((interface_type == CUDA_INTF) &&
++ if (((interface_type == CUDA_INTF) &&
+ (test >= MAX_CUDA_IMAGES)) ||
+- ((interface_type == ONYX_INTF) &&
+- (test >= MAX_ONYX_IMAGES)))
++ ((interface_type == ONYX_INTF) &&
++ (test >= MAX_ONYX_IMAGES)))
+ return -EINVAL;
+
+ /* Copy the image into the processor */
+- if (interface_type == CUDA_INTF)
++ if (interface_type == CUDA_INTF)
+ return perf_config(cuda_images[test]);
+ else
+ return perf_config(onyx_images[test]);
+@@ -360,7 +360,7 @@ static ssize_t perf_write(struct file *file, const char __user *buf, size_t coun
+ static void perf_patch_images(void)
+ {
+ #if 0 /* FIXME!! */
+-/*
++/*
+ * NOTE: this routine is VERY specific to the current TLB image.
+ * If the image is changed, this routine might also need to be changed.
+ */
+@@ -368,9 +368,9 @@ static void perf_patch_images(void)
+ extern void $i_dtlb_miss_2_0();
+ extern void PA2_0_iva();
+
+- /*
++ /*
+ * We can only use the lower 32-bits, the upper 32-bits should be 0
+- * anyway given this is in the kernel
++ * anyway given this is in the kernel
+ */
+ uint32_t itlb_addr = (uint32_t)&($i_itlb_miss_2_0);
+ uint32_t dtlb_addr = (uint32_t)&($i_dtlb_miss_2_0);
+@@ -378,21 +378,21 @@ static void perf_patch_images(void)
+
+ if (perf_processor_interface == ONYX_INTF) {
+ /* clear last 2 bytes */
+- onyx_images[TLBMISS][15] &= 0xffffff00;
++ onyx_images[TLBMISS][15] &= 0xffffff00;
+ /* set 2 bytes */
+ onyx_images[TLBMISS][15] |= (0x000000ff&((dtlb_addr) >> 24));
+ onyx_images[TLBMISS][16] = (dtlb_addr << 8)&0xffffff00;
+ onyx_images[TLBMISS][17] = itlb_addr;
+
+ /* clear last 2 bytes */
+- onyx_images[TLBHANDMISS][15] &= 0xffffff00;
++ onyx_images[TLBHANDMISS][15] &= 0xffffff00;
+ /* set 2 bytes */
+ onyx_images[TLBHANDMISS][15] |= (0x000000ff&((dtlb_addr) >> 24));
+ onyx_images[TLBHANDMISS][16] = (dtlb_addr << 8)&0xffffff00;
+ onyx_images[TLBHANDMISS][17] = itlb_addr;
+
+ /* clear last 2 bytes */
+- onyx_images[BIG_CPI][15] &= 0xffffff00;
++ onyx_images[BIG_CPI][15] &= 0xffffff00;
+ /* set 2 bytes */
+ onyx_images[BIG_CPI][15] |= (0x000000ff&((dtlb_addr) >> 24));
+ onyx_images[BIG_CPI][16] = (dtlb_addr << 8)&0xffffff00;
+@@ -405,24 +405,24 @@ static void perf_patch_images(void)
+
+ } else if (perf_processor_interface == CUDA_INTF) {
+ /* Cuda interface */
+- cuda_images[TLBMISS][16] =
++ cuda_images[TLBMISS][16] =
+ (cuda_images[TLBMISS][16]&0xffff0000) |
+ ((dtlb_addr >> 8)&0x0000ffff);
+- cuda_images[TLBMISS][17] =
++ cuda_images[TLBMISS][17] =
+ ((dtlb_addr << 24)&0xff000000) | ((itlb_addr >> 16)&0x000000ff);
+ cuda_images[TLBMISS][18] = (itlb_addr << 16)&0xffff0000;
+
+- cuda_images[TLBHANDMISS][16] =
++ cuda_images[TLBHANDMISS][16] =
+ (cuda_images[TLBHANDMISS][16]&0xffff0000) |
+ ((dtlb_addr >> 8)&0x0000ffff);
+- cuda_images[TLBHANDMISS][17] =
++ cuda_images[TLBHANDMISS][17] =
+ ((dtlb_addr << 24)&0xff000000) | ((itlb_addr >> 16)&0x000000ff);
+ cuda_images[TLBHANDMISS][18] = (itlb_addr << 16)&0xffff0000;
+
+- cuda_images[BIG_CPI][16] =
++ cuda_images[BIG_CPI][16] =
+ (cuda_images[BIG_CPI][16]&0xffff0000) |
+ ((dtlb_addr >> 8)&0x0000ffff);
+- cuda_images[BIG_CPI][17] =
++ cuda_images[BIG_CPI][17] =
+ ((dtlb_addr << 24)&0xff000000) | ((itlb_addr >> 16)&0x000000ff);
+ cuda_images[BIG_CPI][18] = (itlb_addr << 16)&0xffff0000;
+ } else {
+@@ -434,7 +434,7 @@ static void perf_patch_images(void)
+
+ /*
+ * ioctl routine
+- * All routines effect the processor that they are executed on. Thus you
++ * All routines effect the processor that they are executed on. Thus you
+ * must be running on the processor that you wish to change.
+ */
+
+@@ -460,7 +460,7 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ }
+
+ /* copy out the Counters */
+- if (copy_to_user((void __user *)arg, raddr,
++ if (copy_to_user((void __user *)arg, raddr,
+ sizeof (raddr)) != 0) {
+ error = -EFAULT;
+ break;
+@@ -488,7 +488,7 @@ static const struct file_operations perf_fops = {
+ .open = perf_open,
+ .release = perf_release
+ };
+-
++
+ static struct miscdevice perf_dev = {
+ MISC_DYNAMIC_MINOR,
+ PA_PERF_DEV,
+@@ -595,7 +595,7 @@ static int perf_stop_counters(uint32_t *raddr)
+ /* OR sticky2 (bit 1496) to counter2 bit 32 */
+ tmp64 |= (userbuf[23] >> 8) & 0x0000000080000000;
+ raddr[2] = (uint32_t)tmp64;
+-
++
+ /* Counter3 is bits 1497 to 1528 */
+ tmp64 = (userbuf[23] >> 7) & 0x00000000ffffffff;
+ /* OR sticky3 (bit 1529) to counter3 bit 32 */
+@@ -617,7 +617,7 @@ static int perf_stop_counters(uint32_t *raddr)
+ userbuf[22] = 0;
+ userbuf[23] = 0;
+
+- /*
++ /*
+ * Write back the zeroed bytes + the image given
+ * the read was destructive.
+ */
+@@ -625,13 +625,13 @@ static int perf_stop_counters(uint32_t *raddr)
+ } else {
+
+ /*
+- * Read RDR-15 which contains the counters and sticky bits
++ * Read RDR-15 which contains the counters and sticky bits
+ */
+ if (!perf_rdr_read_ubuf(15, userbuf)) {
+ return -13;
+ }
+
+- /*
++ /*
+ * Clear out the counters
+ */
+ perf_rdr_clear(15);
+@@ -644,7 +644,7 @@ static int perf_stop_counters(uint32_t *raddr)
+ raddr[2] = (uint32_t)((userbuf[1] >> 32) & 0x00000000ffffffffUL);
+ raddr[3] = (uint32_t)(userbuf[1] & 0x00000000ffffffffUL);
+ }
+-
++
+ return 0;
+ }
+
+@@ -682,7 +682,7 @@ static int perf_rdr_read_ubuf(uint32_t rdr_num, uint64_t *buffer)
+ i = tentry->num_words;
+ while (i--) {
+ buffer[i] = 0;
+- }
++ }
+
+ /* Check for bits an even number of 64 */
+ if ((xbits = width & 0x03f) != 0) {
+@@ -808,18 +808,22 @@ static int perf_write_image(uint64_t *memaddr)
+ }
+
+ runway = ioremap_nocache(cpu_device->hpa.start, 4096);
++ if (!runway) {
++ pr_err("perf_write_image: ioremap failed!\n");
++ return -ENOMEM;
++ }
+
+ /* Merge intrigue bits into Runway STATUS 0 */
+ tmp64 = __raw_readq(runway + RUNWAY_STATUS) & 0xffecfffffffffffful;
+- __raw_writeq(tmp64 | (*memaddr++ & 0x0013000000000000ul),
++ __raw_writeq(tmp64 | (*memaddr++ & 0x0013000000000000ul),
+ runway + RUNWAY_STATUS);
+-
++
+ /* Write RUNWAY DEBUG registers */
+ for (i = 0; i < 8; i++) {
+ __raw_writeq(*memaddr++, runway + RUNWAY_DEBUG);
+ }
+
+- return 0;
++ return 0;
+ }
+
+ /*
+@@ -843,7 +847,7 @@ printk("perf_rdr_write\n");
+ perf_rdr_shift_out_U(rdr_num, buffer[i]);
+ } else {
+ perf_rdr_shift_out_W(rdr_num, buffer[i]);
+- }
++ }
+ }
+ printk("perf_rdr_write done\n");
+ }
+diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
+index 8f13c7facdd7..95f090fe385a 100644
+--- a/arch/parisc/kernel/syscall.S
++++ b/arch/parisc/kernel/syscall.S
+@@ -479,11 +479,6 @@ lws_start:
+ comiclr,>> __NR_lws_entries, %r20, %r0
+ b,n lws_exit_nosys
+
+- /* WARNING: Trashing sr2 and sr3 */
+- mfsp %sr7,%r1 /* get userspace into sr3 */
+- mtsp %r1,%sr3
+- mtsp %r0,%sr2 /* get kernel space into sr2 */
+-
+ /* Load table start */
+ ldil L%lws_table, %r1
+ ldo R%lws_table(%r1), %r28 /* Scratch use of r28 */
+@@ -632,9 +627,9 @@ cas_action:
+ stw %r1, 4(%sr2,%r20)
+ #endif
+ /* The load and store could fail */
+-1: ldw,ma 0(%sr3,%r26), %r28
++1: ldw,ma 0(%r26), %r28
+ sub,<> %r28, %r25, %r0
+-2: stw,ma %r24, 0(%sr3,%r26)
++2: stw,ma %r24, 0(%r26)
+ /* Free lock */
+ stw,ma %r20, 0(%sr2,%r20)
+ #if ENABLE_LWS_DEBUG
+@@ -711,9 +706,9 @@ lws_compare_and_swap_2:
+ nop
+
+ /* 8bit load */
+-4: ldb 0(%sr3,%r25), %r25
++4: ldb 0(%r25), %r25
+ b cas2_lock_start
+-5: ldb 0(%sr3,%r24), %r24
++5: ldb 0(%r24), %r24
+ nop
+ nop
+ nop
+@@ -721,9 +716,9 @@ lws_compare_and_swap_2:
+ nop
+
+ /* 16bit load */
+-6: ldh 0(%sr3,%r25), %r25
++6: ldh 0(%r25), %r25
+ b cas2_lock_start
+-7: ldh 0(%sr3,%r24), %r24
++7: ldh 0(%r24), %r24
+ nop
+ nop
+ nop
+@@ -731,9 +726,9 @@ lws_compare_and_swap_2:
+ nop
+
+ /* 32bit load */
+-8: ldw 0(%sr3,%r25), %r25
++8: ldw 0(%r25), %r25
+ b cas2_lock_start
+-9: ldw 0(%sr3,%r24), %r24
++9: ldw 0(%r24), %r24
+ nop
+ nop
+ nop
+@@ -742,14 +737,14 @@ lws_compare_and_swap_2:
+
+ /* 64bit load */
+ #ifdef CONFIG_64BIT
+-10: ldd 0(%sr3,%r25), %r25
+-11: ldd 0(%sr3,%r24), %r24
++10: ldd 0(%r25), %r25
++11: ldd 0(%r24), %r24
+ #else
+- /* Load new value into r22/r23 - high/low */
+-10: ldw 0(%sr3,%r25), %r22
+-11: ldw 4(%sr3,%r25), %r23
++ /* Load old value into r22/r23 - high/low */
++10: ldw 0(%r25), %r22
++11: ldw 4(%r25), %r23
+ /* Load new value into fr4 for atomic store later */
+-12: flddx 0(%sr3,%r24), %fr4
++12: flddx 0(%r24), %fr4
+ #endif
+
+ cas2_lock_start:
+@@ -799,30 +794,30 @@ cas2_action:
+ ldo 1(%r0),%r28
+
+ /* 8bit CAS */
+-13: ldb,ma 0(%sr3,%r26), %r29
++13: ldb,ma 0(%r26), %r29
+ sub,= %r29, %r25, %r0
+ b,n cas2_end
+-14: stb,ma %r24, 0(%sr3,%r26)
++14: stb,ma %r24, 0(%r26)
+ b cas2_end
+ copy %r0, %r28
+ nop
+ nop
+
+ /* 16bit CAS */
+-15: ldh,ma 0(%sr3,%r26), %r29
++15: ldh,ma 0(%r26), %r29
+ sub,= %r29, %r25, %r0
+ b,n cas2_end
+-16: sth,ma %r24, 0(%sr3,%r26)
++16: sth,ma %r24, 0(%r26)
+ b cas2_end
+ copy %r0, %r28
+ nop
+ nop
+
+ /* 32bit CAS */
+-17: ldw,ma 0(%sr3,%r26), %r29
++17: ldw,ma 0(%r26), %r29
+ sub,= %r29, %r25, %r0
+ b,n cas2_end
+-18: stw,ma %r24, 0(%sr3,%r26)
++18: stw,ma %r24, 0(%r26)
+ b cas2_end
+ copy %r0, %r28
+ nop
+@@ -830,22 +825,22 @@ cas2_action:
+
+ /* 64bit CAS */
+ #ifdef CONFIG_64BIT
+-19: ldd,ma 0(%sr3,%r26), %r29
++19: ldd,ma 0(%r26), %r29
+ sub,*= %r29, %r25, %r0
+ b,n cas2_end
+-20: std,ma %r24, 0(%sr3,%r26)
++20: std,ma %r24, 0(%r26)
+ copy %r0, %r28
+ #else
+ /* Compare first word */
+-19: ldw,ma 0(%sr3,%r26), %r29
++19: ldw 0(%r26), %r29
+ sub,= %r29, %r22, %r0
+ b,n cas2_end
+ /* Compare second word */
+-20: ldw,ma 4(%sr3,%r26), %r29
++20: ldw 4(%r26), %r29
+ sub,= %r29, %r23, %r0
+ b,n cas2_end
+ /* Perform the store */
+-21: fstdx %fr4, 0(%sr3,%r26)
++21: fstdx %fr4, 0(%r26)
+ copy %r0, %r28
+ #endif
+
+diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
+index 54cf9bc94dad..3a095670b0c4 100644
+--- a/arch/powerpc/kvm/book3s_64_vio.c
++++ b/arch/powerpc/kvm/book3s_64_vio.c
+@@ -101,22 +101,17 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
+ struct kvm_create_spapr_tce *args)
+ {
+ struct kvmppc_spapr_tce_table *stt = NULL;
++ struct kvmppc_spapr_tce_table *siter;
+ long npages;
+ int ret = -ENOMEM;
+ int i;
+
+- /* Check this LIOBN hasn't been previously allocated */
+- list_for_each_entry(stt, &kvm->arch.spapr_tce_tables, list) {
+- if (stt->liobn == args->liobn)
+- return -EBUSY;
+- }
+-
+ npages = kvmppc_stt_npages(args->window_size);
+
+ stt = kzalloc(sizeof(*stt) + npages * sizeof(struct page *),
+ GFP_KERNEL);
+ if (!stt)
+- goto fail;
++ return ret;
+
+ stt->liobn = args->liobn;
+ stt->window_size = args->window_size;
+@@ -128,23 +123,36 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
+ goto fail;
+ }
+
+- kvm_get_kvm(kvm);
+-
+ mutex_lock(&kvm->lock);
+- list_add(&stt->list, &kvm->arch.spapr_tce_tables);
++
++ /* Check this LIOBN hasn't been previously allocated */
++ ret = 0;
++ list_for_each_entry(siter, &kvm->arch.spapr_tce_tables, list) {
++ if (siter->liobn == args->liobn) {
++ ret = -EBUSY;
++ break;
++ }
++ }
++
++ if (!ret)
++ ret = anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops,
++ stt, O_RDWR | O_CLOEXEC);
++
++ if (ret >= 0) {
++ list_add(&stt->list, &kvm->arch.spapr_tce_tables);
++ kvm_get_kvm(kvm);
++ }
+
+ mutex_unlock(&kvm->lock);
+
+- return anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops,
+- stt, O_RDWR | O_CLOEXEC);
++ if (ret >= 0)
++ return ret;
+
+-fail:
+- if (stt) {
+- for (i = 0; i < npages; i++)
+- if (stt->pages[i])
+- __free_page(stt->pages[i]);
++ fail:
++ for (i = 0; i < npages; i++)
++ if (stt->pages[i])
++ __free_page(stt->pages[i]);
+
+- kfree(stt);
+- }
++ kfree(stt);
+ return ret;
+ }
+diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
+index ceb18d349459..8dd0c8edefd6 100644
+--- a/arch/powerpc/platforms/pseries/mobility.c
++++ b/arch/powerpc/platforms/pseries/mobility.c
+@@ -225,8 +225,10 @@ static int add_dt_node(__be32 parent_phandle, __be32 drc_index)
+ return -ENOENT;
+
+ dn = dlpar_configure_connector(drc_index, parent_dn);
+- if (!dn)
++ if (!dn) {
++ of_node_put(parent_dn);
+ return -ENOENT;
++ }
+
+ rc = dlpar_attach_node(dn);
+ if (rc)
+diff --git a/arch/sparc/include/asm/setup.h b/arch/sparc/include/asm/setup.h
+index be0cc1beed41..3fae200dd251 100644
+--- a/arch/sparc/include/asm/setup.h
++++ b/arch/sparc/include/asm/setup.h
+@@ -59,8 +59,11 @@ extern atomic_t dcpage_flushes;
+ extern atomic_t dcpage_flushes_xcall;
+
+ extern int sysctl_tsb_ratio;
+-#endif
+
++#ifdef CONFIG_SERIAL_SUNHV
++void sunhv_migrate_hvcons_irq(int cpu);
++#endif
++#endif
+ void sun_do_break(void);
+ extern int stop_a_enabled;
+ extern int scons_pwroff;
+diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
+index 4511caa3b7e9..46866b2097e8 100644
+--- a/arch/sparc/kernel/smp_64.c
++++ b/arch/sparc/kernel/smp_64.c
+@@ -1443,8 +1443,12 @@ void smp_send_stop(void)
+ int cpu;
+
+ if (tlb_type == hypervisor) {
++ int this_cpu = smp_processor_id();
++#ifdef CONFIG_SERIAL_SUNHV
++ sunhv_migrate_hvcons_irq(this_cpu);
++#endif
+ for_each_online_cpu(cpu) {
+- if (cpu == smp_processor_id())
++ if (cpu == this_cpu)
+ continue;
+ #ifdef CONFIG_SUN_LDOMS
+ if (ldom_domaining_enabled) {
+diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h
+index bdf02eeee765..c5f0af61420d 100644
+--- a/arch/x86/include/asm/alternative-asm.h
++++ b/arch/x86/include/asm/alternative-asm.h
+@@ -50,8 +50,10 @@
+ #define new_len2 145f-144f
+
+ /*
+- * max without conditionals. Idea adapted from:
++ * gas compatible max based on the idea from:
+ * http://graphics.stanford.edu/~seander/bithacks.html#IntegerMinOrMax
++ *
++ * The additional "-" is needed because gas uses a "true" value of -1.
+ */
+ #define alt_max_short(a, b) ((a) ^ (((a) ^ (b)) & -(-((a) < (b)))))
+
+diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
+index ba32af062f61..c97effa6c72b 100644
+--- a/arch/x86/include/asm/alternative.h
++++ b/arch/x86/include/asm/alternative.h
+@@ -96,12 +96,12 @@ static inline int alternatives_text_reserved(void *start, void *end)
+ alt_end_marker ":\n"
+
+ /*
+- * max without conditionals. Idea adapted from:
++ * gas compatible max based on the idea from:
+ * http://graphics.stanford.edu/~seander/bithacks.html#IntegerMinOrMax
+ *
+- * The additional "-" is needed because gas works with s32s.
++ * The additional "-" is needed because gas uses a "true" value of -1.
+ */
+-#define alt_max_short(a, b) "((" a ") ^ (((" a ") ^ (" b ")) & -(-((" a ") - (" b ")))))"
++#define alt_max_short(a, b) "((" a ") ^ (((" a ") ^ (" b ")) & -(-((" a ") < (" b ")))))"
+
+ /*
+ * Pad the second replacement alternative with additional NOPs if it is
+diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
+index a41beadb3db9..6ca31bf3ccbd 100644
+--- a/arch/x86/kernel/cpu/microcode/intel.c
++++ b/arch/x86/kernel/cpu/microcode/intel.c
+@@ -272,6 +272,18 @@ static int get_ucode_fw(void *to, const void *from, size_t n)
+ return 0;
+ }
+
++static bool is_blacklisted(unsigned int cpu)
++{
++ struct cpuinfo_x86 *c = &cpu_data(cpu);
++
++ if (c->x86 == 6 && c->x86_model == 79) {
++ pr_err_once("late loading on model 79 is disabled.\n");
++ return true;
++ }
++
++ return false;
++}
++
+ static enum ucode_state request_microcode_fw(int cpu, struct device *device,
+ bool refresh_fw)
+ {
+@@ -280,6 +292,9 @@ static enum ucode_state request_microcode_fw(int cpu, struct device *device,
+ const struct firmware *firmware;
+ enum ucode_state ret;
+
++ if (is_blacklisted(cpu))
++ return UCODE_NFOUND;
++
+ sprintf(name, "intel-ucode/%02x-%02x-%02x",
+ c->x86, c->x86_model, c->x86_mask);
+
+@@ -304,6 +319,9 @@ static int get_ucode_user(void *to, const void *from, size_t n)
+ static enum ucode_state
+ request_microcode_user(int cpu, const void __user *buf, size_t size)
+ {
++ if (is_blacklisted(cpu))
++ return UCODE_NFOUND;
++
+ return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user);
+ }
+
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 32e29f926e5a..33c1b5311b98 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -9276,6 +9276,11 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
+ vmcs_write64(VIRTUAL_APIC_PAGE_ADDR,
+ page_to_phys(vmx->nested.virtual_apic_page));
+ vmcs_write32(TPR_THRESHOLD, vmcs12->tpr_threshold);
++ } else {
++#ifdef CONFIG_X86_64
++ exec_control |= CPU_BASED_CR8_LOAD_EXITING |
++ CPU_BASED_CR8_STORE_EXITING;
++#endif
+ }
+
+ if (cpu_has_vmx_msr_bitmap() &&
+@@ -9936,7 +9941,7 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
+ * (KVM doesn't change it)- no reason to call set_cr4_guest_host_mask();
+ */
+ vcpu->arch.cr4_guest_owned_bits = ~vmcs_readl(CR4_GUEST_HOST_MASK);
+- kvm_set_cr4(vcpu, vmcs12->host_cr4);
++ vmx_set_cr4(vcpu, vmcs12->host_cr4);
+
+ nested_ept_uninit_mmu_context(vcpu);
+
+diff --git a/block/bio.c b/block/bio.c
+index cbce3e2208f4..d9cf77c6a847 100644
+--- a/block/bio.c
++++ b/block/bio.c
+@@ -1342,6 +1342,7 @@ struct bio *bio_map_user_iov(struct request_queue *q,
+ offset = uaddr & ~PAGE_MASK;
+ for (j = cur_page; j < page_limit; j++) {
+ unsigned int bytes = PAGE_SIZE - offset;
++ unsigned short prev_bi_vcnt = bio->bi_vcnt;
+
+ if (len <= 0)
+ break;
+@@ -1356,6 +1357,13 @@ struct bio *bio_map_user_iov(struct request_queue *q,
+ bytes)
+ break;
+
++ /*
++ * check if vector was merged with previous
++ * drop page reference if needed
++ */
++ if (bio->bi_vcnt == prev_bi_vcnt)
++ put_page(pages[j]);
++
+ len -= bytes;
+ offset = 0;
+ }
+diff --git a/block/bsg-lib.c b/block/bsg-lib.c
+index 650f427d915b..341b8d858e67 100644
+--- a/block/bsg-lib.c
++++ b/block/bsg-lib.c
+@@ -147,7 +147,6 @@ static int bsg_create_job(struct device *dev, struct request *req)
+ failjob_rls_rqst_payload:
+ kfree(job->request_payload.sg_list);
+ failjob_rls_job:
+- kfree(job);
+ return -ENOMEM;
+ }
+
+diff --git a/block/partitions/efi.c b/block/partitions/efi.c
+index 26cb624ace05..d26d0d27f5fd 100644
+--- a/block/partitions/efi.c
++++ b/block/partitions/efi.c
+@@ -293,7 +293,7 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state,
+ if (!gpt)
+ return NULL;
+
+- count = le32_to_cpu(gpt->num_partition_entries) *
++ count = (size_t)le32_to_cpu(gpt->num_partition_entries) *
+ le32_to_cpu(gpt->sizeof_partition_entry);
+ if (!count)
+ return NULL;
+@@ -352,7 +352,7 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba,
+ gpt_header **gpt, gpt_entry **ptes)
+ {
+ u32 crc, origcrc;
+- u64 lastlba;
++ u64 lastlba, pt_size;
+
+ if (!ptes)
+ return 0;
+@@ -434,13 +434,20 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba,
+ goto fail;
+ }
+
++ /* Sanity check partition table size */
++ pt_size = (u64)le32_to_cpu((*gpt)->num_partition_entries) *
++ le32_to_cpu((*gpt)->sizeof_partition_entry);
++ if (pt_size > KMALLOC_MAX_SIZE) {
++ pr_debug("GUID Partition Table is too large: %llu > %lu bytes\n",
++ (unsigned long long)pt_size, KMALLOC_MAX_SIZE);
++ goto fail;
++ }
++
+ if (!(*ptes = alloc_read_gpt_entries(state, *gpt)))
+ goto fail;
+
+ /* Check the GUID Partition Entry Array CRC */
+- crc = efi_crc32((const unsigned char *) (*ptes),
+- le32_to_cpu((*gpt)->num_partition_entries) *
+- le32_to_cpu((*gpt)->sizeof_partition_entry));
++ crc = efi_crc32((const unsigned char *) (*ptes), pt_size);
+
+ if (crc != le32_to_cpu((*gpt)->partition_entry_array_crc32)) {
+ pr_debug("GUID Partitition Entry Array CRC check failed.\n");
+diff --git a/crypto/Kconfig b/crypto/Kconfig
+index 362905e7c841..1b7480773899 100644
+--- a/crypto/Kconfig
++++ b/crypto/Kconfig
+@@ -290,6 +290,7 @@ config CRYPTO_XTS
+ select CRYPTO_BLKCIPHER
+ select CRYPTO_MANAGER
+ select CRYPTO_GF128MUL
++ select CRYPTO_ECB
+ help
+ XTS: IEEE1619/D16 narrow block cipher use with aes-xts-plain,
+ key size 256, 384 or 512 bits. This implementation currently
+diff --git a/crypto/shash.c b/crypto/shash.c
+index 03fbcd4a82c4..17510eaf0a36 100644
+--- a/crypto/shash.c
++++ b/crypto/shash.c
+@@ -274,12 +274,14 @@ static int shash_async_finup(struct ahash_request *req)
+
+ int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc)
+ {
+- struct scatterlist *sg = req->src;
+- unsigned int offset = sg->offset;
+ unsigned int nbytes = req->nbytes;
++ struct scatterlist *sg;
++ unsigned int offset;
+ int err;
+
+- if (nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset)) {
++ if (nbytes &&
++ (sg = req->src, offset = sg->offset,
++ nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset))) {
+ void *data;
+
+ data = kmap_atomic(sg_page(sg));
+diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c
+index e2d94972962d..7aa10c200ecb 100644
+--- a/drivers/ata/libata-transport.c
++++ b/drivers/ata/libata-transport.c
+@@ -224,7 +224,6 @@ static DECLARE_TRANSPORT_CLASS(ata_port_class,
+
+ static void ata_tport_release(struct device *dev)
+ {
+- put_device(dev->parent);
+ }
+
+ /**
+@@ -284,7 +283,7 @@ int ata_tport_add(struct device *parent,
+ device_initialize(dev);
+ dev->type = &ata_port_type;
+
+- dev->parent = get_device(parent);
++ dev->parent = parent;
+ dev->release = ata_tport_release;
+ dev_set_name(dev, "ata%d", ap->print_id);
+ transport_setup_device(dev);
+@@ -348,7 +347,6 @@ static DECLARE_TRANSPORT_CLASS(ata_link_class,
+
+ static void ata_tlink_release(struct device *dev)
+ {
+- put_device(dev->parent);
+ }
+
+ /**
+@@ -410,7 +408,7 @@ int ata_tlink_add(struct ata_link *link)
+ int error;
+
+ device_initialize(dev);
+- dev->parent = get_device(&ap->tdev);
++ dev->parent = &ap->tdev;
+ dev->release = ata_tlink_release;
+ if (ata_is_host_link(link))
+ dev_set_name(dev, "link%d", ap->print_id);
+@@ -588,7 +586,6 @@ static DECLARE_TRANSPORT_CLASS(ata_dev_class,
+
+ static void ata_tdev_release(struct device *dev)
+ {
+- put_device(dev->parent);
+ }
+
+ /**
+@@ -661,7 +658,7 @@ static int ata_tdev_add(struct ata_device *ata_dev)
+ int error;
+
+ device_initialize(dev);
+- dev->parent = get_device(&link->tdev);
++ dev->parent = &link->tdev;
+ dev->release = ata_tdev_release;
+ if (ata_is_host_link(link))
+ dev_set_name(dev, "dev%d.%d", ap->print_id,ata_dev->devno);
+diff --git a/drivers/base/platform.c b/drivers/base/platform.c
+index 29a4ef08e051..018482d7c87b 100644
+--- a/drivers/base/platform.c
++++ b/drivers/base/platform.c
+@@ -731,7 +731,8 @@ static ssize_t driver_override_store(struct device *dev,
+ struct platform_device *pdev = to_platform_device(dev);
+ char *driver_override, *old, *cp;
+
+- if (count > PATH_MAX)
++ /* We need to keep extra room for a newline */
++ if (count >= (PAGE_SIZE - 1))
+ return -EINVAL;
+
+ driver_override = kstrndup(buf, count, GFP_KERNEL);
+diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
+index 6f047dcb94c2..155fdb3e3d55 100644
+--- a/drivers/bus/mvebu-mbus.c
++++ b/drivers/bus/mvebu-mbus.c
+@@ -604,7 +604,7 @@ mvebu_mbus_default_setup_cpu_target(struct mvebu_mbus_state *mbus)
+ if (mbus->hw_io_coherency)
+ w->mbus_attr |= ATTR_HW_COHERENCY;
+ w->base = base & DDR_BASE_CS_LOW_MASK;
+- w->size = (size | ~DDR_SIZE_MASK) + 1;
++ w->size = (u64)(size | ~DDR_SIZE_MASK) + 1;
+ }
+ }
+ mvebu_mbus_dram_info.num_cs = cs;
+diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
+index eb79d49ab88c..3159bafdbe6b 100644
+--- a/drivers/crypto/talitos.c
++++ b/drivers/crypto/talitos.c
+@@ -1579,9 +1579,9 @@ static int common_nonsnoop_hash(struct talitos_edesc *edesc,
+ req_ctx->swinit = 0;
+ } else {
+ desc->ptr[1] = zero_entry;
+- /* Indicate next op is not the first. */
+- req_ctx->first = 0;
+ }
++ /* Indicate next op is not the first. */
++ req_ctx->first = 0;
+
+ /* HMAC key */
+ if (ctx->keylen)
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 7724ddb0f776..fd11a251024d 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -1800,6 +1800,7 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr)
+ return -EINVAL;
+ }
+ req_payload.num_slots = mgr->proposed_vcpis[i]->num_slots;
++ req_payload.vcpi = mgr->proposed_vcpis[i]->vcpi;
+ } else {
+ port = NULL;
+ req_payload.num_slots = 0;
+@@ -1815,6 +1816,7 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr)
+ if (req_payload.num_slots) {
+ drm_dp_create_payload_step1(mgr, mgr->proposed_vcpis[i]->vcpi, &req_payload);
+ mgr->payloads[i].num_slots = req_payload.num_slots;
++ mgr->payloads[i].vcpi = req_payload.vcpi;
+ } else if (mgr->payloads[i].num_slots) {
+ mgr->payloads[i].num_slots = 0;
+ drm_dp_destroy_payload_step1(mgr, port, mgr->payloads[i].vcpi, &mgr->payloads[i]);
+diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
+index fadf9865709e..cb1d140db6b9 100644
+--- a/drivers/gpu/drm/i915/intel_bios.c
++++ b/drivers/gpu/drm/i915/intel_bios.c
+@@ -991,6 +991,13 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
+ is_hdmi = is_dvi && (child->common.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
+ is_edp = is_dp && (child->common.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR);
+
++ if (port == PORT_A && is_dvi) {
++ DRM_DEBUG_KMS("VBT claims port A supports DVI%s, ignoring\n",
++ is_hdmi ? "/HDMI" : "");
++ is_dvi = false;
++ is_hdmi = false;
++ }
++
+ info->supports_dvi = is_dvi;
+ info->supports_hdmi = is_hdmi;
+ info->supports_dp = is_dp;
+diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
+index 1ec738292a1a..a9054be9bca2 100644
+--- a/drivers/hid/i2c-hid/i2c-hid.c
++++ b/drivers/hid/i2c-hid/i2c-hid.c
+@@ -538,7 +538,8 @@ static int i2c_hid_alloc_buffers(struct i2c_hid *ihid, size_t report_size)
+ {
+ /* the worst case is computed from the set_report command with a
+ * reportID > 15 and the maximum report length */
+- int args_len = sizeof(__u8) + /* optional ReportID byte */
++ int args_len = sizeof(__u8) + /* ReportID */
++ sizeof(__u8) + /* optional ReportID byte */
+ sizeof(__u16) + /* data register */
+ sizeof(__u16) + /* size of the report */
+ report_size; /* report */
+diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
+index 49a259fc610e..765aad050e34 100644
+--- a/drivers/hid/usbhid/hid-core.c
++++ b/drivers/hid/usbhid/hid-core.c
+@@ -970,6 +970,8 @@ static int usbhid_parse(struct hid_device *hid)
+ unsigned int rsize = 0;
+ char *rdesc;
+ int ret, n;
++ int num_descriptors;
++ size_t offset = offsetof(struct hid_descriptor, desc);
+
+ quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct));
+@@ -992,10 +994,18 @@ static int usbhid_parse(struct hid_device *hid)
+ return -ENODEV;
+ }
+
++ if (hdesc->bLength < sizeof(struct hid_descriptor)) {
++ dbg_hid("hid descriptor is too short\n");
++ return -EINVAL;
++ }
++
+ hid->version = le16_to_cpu(hdesc->bcdHID);
+ hid->country = hdesc->bCountryCode;
+
+- for (n = 0; n < hdesc->bNumDescriptors; n++)
++ num_descriptors = min_t(int, hdesc->bNumDescriptors,
++ (hdesc->bLength - offset) / sizeof(struct hid_class_descriptor));
++
++ for (n = 0; n < num_descriptors; n++)
+ if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
+ rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
+
+diff --git a/drivers/hwmon/gl520sm.c b/drivers/hwmon/gl520sm.c
+index dee93ec87d02..84e0994aafdd 100644
+--- a/drivers/hwmon/gl520sm.c
++++ b/drivers/hwmon/gl520sm.c
+@@ -208,11 +208,13 @@ static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
+ }
+ static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
+
+-#define VDD_FROM_REG(val) (((val) * 95 + 2) / 4)
+-#define VDD_TO_REG(val) clamp_val((((val) * 4 + 47) / 95), 0, 255)
++#define VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4)
++#define VDD_CLAMP(val) clamp_val(val, 0, 255 * 95 / 4)
++#define VDD_TO_REG(val) DIV_ROUND_CLOSEST(VDD_CLAMP(val) * 4, 95)
+
+-#define IN_FROM_REG(val) ((val) * 19)
+-#define IN_TO_REG(val) clamp_val((((val) + 9) / 19), 0, 255)
++#define IN_FROM_REG(val) ((val) * 19)
++#define IN_CLAMP(val) clamp_val(val, 0, 255 * 19)
++#define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19)
+
+ static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
+ char *buf)
+@@ -349,8 +351,13 @@ static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
+
+ #define DIV_FROM_REG(val) (1 << (val))
+ #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div))))
+-#define FAN_TO_REG(val, div) ((val) <= 0 ? 0 : \
+- clamp_val((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255))
++
++#define FAN_BASE(div) (480000 >> (div))
++#define FAN_CLAMP(val, div) clamp_val(val, FAN_BASE(div) / 255, \
++ FAN_BASE(div))
++#define FAN_TO_REG(val, div) ((val) == 0 ? 0 : \
++ DIV_ROUND_CLOSEST(480000, \
++ FAN_CLAMP(val, div) << (div)))
+
+ static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
+ char *buf)
+@@ -513,9 +520,9 @@ static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
+ static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
+ get_fan_off, set_fan_off);
+
+-#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
+-#define TEMP_TO_REG(val) clamp_val(((((val) < 0 ? \
+- (val) - 500 : (val) + 500) / 1000) + 130), 0, 255)
++#define TEMP_FROM_REG(val) (((val) - 130) * 1000)
++#define TEMP_CLAMP(val) clamp_val(val, -130000, 125000)
++#define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 130)
+
+ static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
+ char *buf)
+diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
+index 9bd10a9b4b50..8029a81a3799 100644
+--- a/drivers/i2c/busses/i2c-at91.c
++++ b/drivers/i2c/busses/i2c-at91.c
+@@ -875,6 +875,7 @@ static int at91_twi_suspend_noirq(struct device *dev)
+
+ static int at91_twi_resume_noirq(struct device *dev)
+ {
++ struct at91_twi_dev *twi_dev = dev_get_drvdata(dev);
+ int ret;
+
+ if (!pm_runtime_status_suspended(dev)) {
+@@ -886,6 +887,8 @@ static int at91_twi_resume_noirq(struct device *dev)
+ pm_runtime_mark_last_busy(dev);
+ pm_request_autosuspend(dev);
+
++ at91_init_twi_bus(twi_dev);
++
+ return 0;
+ }
+
+diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c
+index a9276eeb61d5..1d60af5dbffc 100644
+--- a/drivers/i2c/busses/i2c-ismt.c
++++ b/drivers/i2c/busses/i2c-ismt.c
+@@ -339,12 +339,15 @@ static int ismt_process_desc(const struct ismt_desc *desc,
+ data->word = dma_buffer[0] | (dma_buffer[1] << 8);
+ break;
+ case I2C_SMBUS_BLOCK_DATA:
+- case I2C_SMBUS_I2C_BLOCK_DATA:
+ if (desc->rxbytes != dma_buffer[0] + 1)
+ return -EMSGSIZE;
+
+ memcpy(data->block, dma_buffer, desc->rxbytes);
+ break;
++ case I2C_SMBUS_I2C_BLOCK_DATA:
++ memcpy(&data->block[1], dma_buffer, desc->rxbytes);
++ data->block[0] = desc->rxbytes;
++ break;
+ }
+ return 0;
+ }
+diff --git a/drivers/i2c/busses/i2c-meson.c b/drivers/i2c/busses/i2c-meson.c
+index 5e176adca8e8..ee7685f15d88 100644
+--- a/drivers/i2c/busses/i2c-meson.c
++++ b/drivers/i2c/busses/i2c-meson.c
+@@ -175,7 +175,7 @@ static void meson_i2c_put_data(struct meson_i2c *i2c, char *buf, int len)
+ wdata1 |= *buf++ << ((i - 4) * 8);
+
+ writel(wdata0, i2c->regs + REG_TOK_WDATA0);
+- writel(wdata0, i2c->regs + REG_TOK_WDATA1);
++ writel(wdata1, i2c->regs + REG_TOK_WDATA1);
+
+ dev_dbg(i2c->dev, "%s: data %08x %08x len %d\n", __func__,
+ wdata0, wdata1, len);
+diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
+index d10bd0c97233..22c4c17cd996 100644
+--- a/drivers/iio/adc/ad_sigma_delta.c
++++ b/drivers/iio/adc/ad_sigma_delta.c
+@@ -177,6 +177,34 @@ out:
+ }
+ EXPORT_SYMBOL_GPL(ad_sd_read_reg);
+
++/**
++ * ad_sd_reset() - Reset the serial interface
++ *
++ * @sigma_delta: The sigma delta device
++ * @reset_length: Number of SCLKs with DIN = 1
++ *
++ * Returns 0 on success, an error code otherwise.
++ **/
++int ad_sd_reset(struct ad_sigma_delta *sigma_delta,
++ unsigned int reset_length)
++{
++ uint8_t *buf;
++ unsigned int size;
++ int ret;
++
++ size = DIV_ROUND_UP(reset_length, 8);
++ buf = kcalloc(size, sizeof(*buf), GFP_KERNEL);
++ if (!buf)
++ return -ENOMEM;
++
++ memset(buf, 0xff, size);
++ ret = spi_write(sigma_delta->spi, buf, size);
++ kfree(buf);
++
++ return ret;
++}
++EXPORT_SYMBOL_GPL(ad_sd_reset);
++
+ static int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
+ unsigned int mode, unsigned int channel)
+ {
+diff --git a/drivers/iio/adc/axp288_adc.c b/drivers/iio/adc/axp288_adc.c
+index 56008a86b78f..1c626a3cc7f2 100644
+--- a/drivers/iio/adc/axp288_adc.c
++++ b/drivers/iio/adc/axp288_adc.c
+@@ -28,8 +28,6 @@
+ #include <linux/iio/driver.h>
+
+ #define AXP288_ADC_EN_MASK 0xF1
+-#define AXP288_ADC_TS_PIN_GPADC 0xF2
+-#define AXP288_ADC_TS_PIN_ON 0xF3
+
+ enum axp288_adc_id {
+ AXP288_ADC_TS,
+@@ -123,16 +121,6 @@ static int axp288_adc_read_channel(int *val, unsigned long address,
+ return IIO_VAL_INT;
+ }
+
+-static int axp288_adc_set_ts(struct regmap *regmap, unsigned int mode,
+- unsigned long address)
+-{
+- /* channels other than GPADC do not need to switch TS pin */
+- if (address != AXP288_GP_ADC_H)
+- return 0;
+-
+- return regmap_write(regmap, AXP288_ADC_TS_PIN_CTRL, mode);
+-}
+-
+ static int axp288_adc_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+@@ -143,16 +131,7 @@ static int axp288_adc_read_raw(struct iio_dev *indio_dev,
+ mutex_lock(&indio_dev->mlock);
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+- if (axp288_adc_set_ts(info->regmap, AXP288_ADC_TS_PIN_GPADC,
+- chan->address)) {
+- dev_err(&indio_dev->dev, "GPADC mode\n");
+- ret = -EINVAL;
+- break;
+- }
+ ret = axp288_adc_read_channel(val, chan->address, info->regmap);
+- if (axp288_adc_set_ts(info->regmap, AXP288_ADC_TS_PIN_ON,
+- chan->address))
+- dev_err(&indio_dev->dev, "TS pin restore\n");
+ break;
+ default:
+ ret = -EINVAL;
+@@ -162,15 +141,6 @@ static int axp288_adc_read_raw(struct iio_dev *indio_dev,
+ return ret;
+ }
+
+-static int axp288_adc_set_state(struct regmap *regmap)
+-{
+- /* ADC should be always enabled for internal FG to function */
+- if (regmap_write(regmap, AXP288_ADC_TS_PIN_CTRL, AXP288_ADC_TS_PIN_ON))
+- return -EIO;
+-
+- return regmap_write(regmap, AXP20X_ADC_EN1, AXP288_ADC_EN_MASK);
+-}
+-
+ static const struct iio_info axp288_adc_iio_info = {
+ .read_raw = &axp288_adc_read_raw,
+ .driver_module = THIS_MODULE,
+@@ -199,7 +169,7 @@ static int axp288_adc_probe(struct platform_device *pdev)
+ * Set ADC to enabled state at all time, including system suspend.
+ * otherwise internal fuel gauge functionality may be affected.
+ */
+- ret = axp288_adc_set_state(axp20x->regmap);
++ ret = regmap_write(info->regmap, AXP20X_ADC_EN1, AXP288_ADC_EN_MASK);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to enable ADC device\n");
+ return ret;
+diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c
+index 8d9c9b9215dd..e7c68a71eeb8 100644
+--- a/drivers/iio/adc/mcp320x.c
++++ b/drivers/iio/adc/mcp320x.c
+@@ -294,6 +294,7 @@ static int mcp320x_probe(struct spi_device *spi)
+ indio_dev->name = spi_get_device_id(spi)->name;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->info = &mcp320x_info;
++ spi_set_drvdata(spi, indio_dev);
+
+ chip_info = &mcp320x_chip_infos[spi_get_device_id(spi)->driver_data];
+ indio_dev->channels = chip_info->channels;
+diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
+index ce93bd8e3f68..a483747cdc9b 100644
+--- a/drivers/iio/adc/xilinx-xadc-core.c
++++ b/drivers/iio/adc/xilinx-xadc-core.c
+@@ -1223,7 +1223,7 @@ static int xadc_probe(struct platform_device *pdev)
+
+ ret = xadc->ops->setup(pdev, indio_dev, irq);
+ if (ret)
+- goto err_free_samplerate_trigger;
++ goto err_clk_disable_unprepare;
+
+ ret = request_threaded_irq(irq, xadc->ops->interrupt_handler,
+ xadc->ops->threaded_interrupt_handler,
+@@ -1284,6 +1284,8 @@ static int xadc_probe(struct platform_device *pdev)
+
+ err_free_irq:
+ free_irq(irq, indio_dev);
++err_clk_disable_unprepare:
++ clk_disable_unprepare(xadc->clk);
+ err_free_samplerate_trigger:
+ if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
+ iio_trigger_free(xadc->samplerate_trigger);
+@@ -1293,8 +1295,6 @@ err_free_convst_trigger:
+ err_triggered_buffer_cleanup:
+ if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
+ iio_triggered_buffer_cleanup(indio_dev);
+-err_clk_disable_unprepare:
+- clk_disable_unprepare(xadc->clk);
+ err_device_free:
+ kfree(indio_dev->channels);
+
+diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
+index 4df97f650e44..b17aaa27c042 100644
+--- a/drivers/iio/industrialio-core.c
++++ b/drivers/iio/industrialio-core.c
+@@ -203,8 +203,10 @@ static ssize_t iio_debugfs_read_reg(struct file *file, char __user *userbuf,
+ ret = indio_dev->info->debugfs_reg_access(indio_dev,
+ indio_dev->cached_reg_addr,
+ 0, &val);
+- if (ret)
++ if (ret) {
+ dev_err(indio_dev->dev.parent, "%s: read failed\n", __func__);
++ return ret;
++ }
+
+ len = snprintf(buf, sizeof(buf), "0x%X\n", val);
+
+diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
+index f32b4628e991..55d51aa1bf56 100644
+--- a/drivers/infiniband/hw/qib/qib_iba7322.c
++++ b/drivers/infiniband/hw/qib/qib_iba7322.c
+@@ -7096,7 +7096,7 @@ static void qib_7322_txchk_change(struct qib_devdata *dd, u32 start,
+ unsigned long flags;
+
+ while (wait) {
+- unsigned long shadow;
++ unsigned long shadow = 0;
+ int cstart, previ = -1;
+
+ /*
+diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
+index c65e62da1502..7599fb0b2d98 100644
+--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
++++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
+@@ -977,7 +977,7 @@ static void __ipoib_reap_neigh(struct ipoib_dev_priv *priv)
+ rcu_dereference_protected(neigh->hnext,
+ lockdep_is_held(&priv->lock)));
+ /* remove from path/mc list */
+- list_del(&neigh->list);
++ list_del_init(&neigh->list);
+ call_rcu(&neigh->rcu, ipoib_neigh_reclaim);
+ } else {
+ np = &neigh->hnext;
+@@ -1140,7 +1140,7 @@ void ipoib_neigh_free(struct ipoib_neigh *neigh)
+ rcu_dereference_protected(neigh->hnext,
+ lockdep_is_held(&priv->lock)));
+ /* remove from parent list */
+- list_del(&neigh->list);
++ list_del_init(&neigh->list);
+ call_rcu(&neigh->rcu, ipoib_neigh_reclaim);
+ return;
+ } else {
+@@ -1225,7 +1225,7 @@ void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid)
+ rcu_dereference_protected(neigh->hnext,
+ lockdep_is_held(&priv->lock)));
+ /* remove from parent list */
+- list_del(&neigh->list);
++ list_del_init(&neigh->list);
+ call_rcu(&neigh->rcu, ipoib_neigh_reclaim);
+ } else {
+ np = &neigh->hnext;
+@@ -1267,7 +1267,7 @@ static void ipoib_flush_neighs(struct ipoib_dev_priv *priv)
+ rcu_dereference_protected(neigh->hnext,
+ lockdep_is_held(&priv->lock)));
+ /* remove from path/mc list */
+- list_del(&neigh->list);
++ list_del_init(&neigh->list);
+ call_rcu(&neigh->rcu, ipoib_neigh_reclaim);
+ }
+ }
+diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
+index 57a34f87dedf..9b47a437d6c9 100644
+--- a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
++++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
+@@ -160,11 +160,11 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
+ out:
+ up_write(&ppriv->vlan_rwsem);
+
++ rtnl_unlock();
++
+ if (result)
+ free_netdev(priv->dev);
+
+- rtnl_unlock();
+-
+ return result;
+ }
+
+@@ -185,7 +185,6 @@ int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
+ list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
+ if (priv->pkey == pkey &&
+ priv->child_type == IPOIB_LEGACY_CHILD) {
+- unregister_netdevice(priv->dev);
+ list_del(&priv->list);
+ dev = priv->dev;
+ break;
+@@ -193,6 +192,11 @@ int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
+ }
+ up_write(&ppriv->vlan_rwsem);
+
++ if (dev) {
++ ipoib_dbg(ppriv, "delete child vlan %s\n", dev->name);
++ unregister_netdevice(dev);
++ }
++
+ rtnl_unlock();
+
+ if (dev) {
+diff --git a/drivers/input/tablet/gtco.c b/drivers/input/tablet/gtco.c
+index 7c18249d6c8e..8b68a210277b 100644
+--- a/drivers/input/tablet/gtco.c
++++ b/drivers/input/tablet/gtco.c
+@@ -231,13 +231,17 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
+
+ /* Walk this report and pull out the info we need */
+ while (i < length) {
+- prefix = report[i];
+-
+- /* Skip over prefix */
+- i++;
++ prefix = report[i++];
+
+ /* Determine data size and save the data in the proper variable */
+- size = PREF_SIZE(prefix);
++ size = (1U << PREF_SIZE(prefix)) >> 1;
++ if (i + size > length) {
++ dev_err(ddev,
++ "Not enough data (need %d, have %d)\n",
++ i + size, length);
++ break;
++ }
++
+ switch (size) {
+ case 1:
+ data = report[i];
+@@ -245,8 +249,7 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
+ case 2:
+ data16 = get_unaligned_le16(&report[i]);
+ break;
+- case 3:
+- size = 4;
++ case 4:
+ data32 = get_unaligned_le32(&report[i]);
+ break;
+ }
+diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
+index f0fd5352f8ef..354da81a16bd 100644
+--- a/drivers/iommu/amd_iommu.c
++++ b/drivers/iommu/amd_iommu.c
+@@ -3380,6 +3380,7 @@ static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova,
+ mutex_unlock(&domain->api_lock);
+
+ domain_flush_tlb_pde(domain);
++ domain_flush_complete(domain);
+
+ return unmap_size;
+ }
+diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
+index c12bb93334ff..2f7dffaae93a 100644
+--- a/drivers/irqchip/irq-crossbar.c
++++ b/drivers/irqchip/irq-crossbar.c
+@@ -193,7 +193,8 @@ static const struct irq_domain_ops crossbar_domain_ops = {
+
+ static int __init crossbar_of_init(struct device_node *node)
+ {
+- int i, size, max = 0, reserved = 0, entry;
++ int i, size, reserved = 0;
++ u32 max = 0, entry;
+ const __be32 *irqsr;
+ int ret = -ENOMEM;
+
+diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
+index bf3fbd00a091..64b586458d3d 100644
+--- a/drivers/isdn/i4l/isdn_ppp.c
++++ b/drivers/isdn/i4l/isdn_ppp.c
+@@ -828,7 +828,6 @@ isdn_ppp_write(int min, struct file *file, const char __user *buf, int count)
+ isdn_net_local *lp;
+ struct ippp_struct *is;
+ int proto;
+- unsigned char protobuf[4];
+
+ is = file->private_data;
+
+@@ -842,24 +841,28 @@ isdn_ppp_write(int min, struct file *file, const char __user *buf, int count)
+ if (!lp)
+ printk(KERN_DEBUG "isdn_ppp_write: lp == NULL\n");
+ else {
+- /*
+- * Don't reset huptimer for
+- * LCP packets. (Echo requests).
+- */
+- if (copy_from_user(protobuf, buf, 4))
+- return -EFAULT;
+- proto = PPP_PROTOCOL(protobuf);
+- if (proto != PPP_LCP)
+- lp->huptimer = 0;
++ if (lp->isdn_device < 0 || lp->isdn_channel < 0) {
++ unsigned char protobuf[4];
++ /*
++ * Don't reset huptimer for
++ * LCP packets. (Echo requests).
++ */
++ if (copy_from_user(protobuf, buf, 4))
++ return -EFAULT;
++
++ proto = PPP_PROTOCOL(protobuf);
++ if (proto != PPP_LCP)
++ lp->huptimer = 0;
+
+- if (lp->isdn_device < 0 || lp->isdn_channel < 0)
+ return 0;
++ }
+
+ if ((dev->drv[lp->isdn_device]->flags & DRV_FLAG_RUNNING) &&
+ lp->dialstate == 0 &&
+ (lp->flags & ISDN_NET_CONNECTED)) {
+ unsigned short hl;
+ struct sk_buff *skb;
++ unsigned char *cpy_buf;
+ /*
+ * we need to reserve enough space in front of
+ * sk_buff. old call to dev_alloc_skb only reserved
+@@ -872,11 +875,21 @@ isdn_ppp_write(int min, struct file *file, const char __user *buf, int count)
+ return count;
+ }
+ skb_reserve(skb, hl);
+- if (copy_from_user(skb_put(skb, count), buf, count))
++ cpy_buf = skb_put(skb, count);
++ if (copy_from_user(cpy_buf, buf, count))
+ {
+ kfree_skb(skb);
+ return -EFAULT;
+ }
++
++ /*
++ * Don't reset huptimer for
++ * LCP packets. (Echo requests).
++ */
++ proto = PPP_PROTOCOL(cpy_buf);
++ if (proto != PPP_LCP)
++ lp->huptimer = 0;
++
+ if (is->debug & 0x40) {
+ printk(KERN_DEBUG "ppp xmit: len %d\n", (int) skb->len);
+ isdn_ppp_frame_log("xmit", skb->data, skb->len, 32, is->unit, lp->ppp_slot);
+diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
+index 213c3332d7fb..0ba6c358c6e0 100644
+--- a/drivers/md/raid10.c
++++ b/drivers/md/raid10.c
+@@ -1502,11 +1502,24 @@ retry_write:
+ mbio->bi_private = r10_bio;
+
+ atomic_inc(&r10_bio->remaining);
++
++ cb = blk_check_plugged(raid10_unplug, mddev,
++ sizeof(*plug));
++ if (cb)
++ plug = container_of(cb, struct raid10_plug_cb,
++ cb);
++ else
++ plug = NULL;
+ spin_lock_irqsave(&conf->device_lock, flags);
+- bio_list_add(&conf->pending_bio_list, mbio);
+- conf->pending_count++;
++ if (plug) {
++ bio_list_add(&plug->pending, mbio);
++ plug->pending_cnt++;
++ } else {
++ bio_list_add(&conf->pending_bio_list, mbio);
++ conf->pending_count++;
++ }
+ spin_unlock_irqrestore(&conf->device_lock, flags);
+- if (!mddev_check_plugged(mddev))
++ if (!plug)
+ md_wakeup_thread(mddev->thread);
+ }
+ }
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index 69542a92e4b0..02e6d335f178 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -816,6 +816,14 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh
+ spin_unlock(&head->batch_head->batch_lock);
+ goto unlock_out;
+ }
++ /*
++ * We must assign batch_head of this stripe within the
++ * batch_lock, otherwise clear_batch_ready of batch head
++ * stripe could clear BATCH_READY bit of this stripe and
++ * this stripe->batch_head doesn't get assigned, which
++ * could confuse clear_batch_ready for this stripe
++ */
++ sh->batch_head = head->batch_head;
+
+ /*
+ * at this point, head's BATCH_READY could be cleared, but we
+@@ -823,8 +831,6 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh
+ */
+ list_add(&sh->batch_list, &head->batch_list);
+ spin_unlock(&head->batch_head->batch_lock);
+-
+- sh->batch_head = head->batch_head;
+ } else {
+ head->batch_head = head;
+ sh->batch_head = head->batch_head;
+@@ -4249,7 +4255,8 @@ static void break_stripe_batch_list(struct stripe_head *head_sh,
+
+ set_mask_bits(&sh->state, ~(STRIPE_EXPAND_SYNC_FLAGS |
+ (1 << STRIPE_PREREAD_ACTIVE) |
+- (1 << STRIPE_DEGRADED)),
++ (1 << STRIPE_DEGRADED) |
++ (1 << STRIPE_ON_UNPLUG_LIST)),
+ head_sh->state & (1 << STRIPE_INSYNC));
+
+ sh->check_state = head_sh->check_state;
+diff --git a/drivers/media/pci/ttpci/av7110_hw.c b/drivers/media/pci/ttpci/av7110_hw.c
+index 300bd3c94738..0992bb0e207e 100644
+--- a/drivers/media/pci/ttpci/av7110_hw.c
++++ b/drivers/media/pci/ttpci/av7110_hw.c
+@@ -56,11 +56,11 @@
+ by Nathan Laredo <laredo@gnu.org> */
+
+ int av7110_debiwrite(struct av7110 *av7110, u32 config,
+- int addr, u32 val, int count)
++ int addr, u32 val, unsigned int count)
+ {
+ struct saa7146_dev *dev = av7110->dev;
+
+- if (count <= 0 || count > 32764) {
++ if (count > 32764) {
+ printk("%s: invalid count %d\n", __func__, count);
+ return -1;
+ }
+@@ -78,12 +78,12 @@ int av7110_debiwrite(struct av7110 *av7110, u32 config,
+ return 0;
+ }
+
+-u32 av7110_debiread(struct av7110 *av7110, u32 config, int addr, int count)
++u32 av7110_debiread(struct av7110 *av7110, u32 config, int addr, unsigned int count)
+ {
+ struct saa7146_dev *dev = av7110->dev;
+ u32 result = 0;
+
+- if (count > 32764 || count <= 0) {
++ if (count > 32764) {
+ printk("%s: invalid count %d\n", __func__, count);
+ return 0;
+ }
+diff --git a/drivers/media/pci/ttpci/av7110_hw.h b/drivers/media/pci/ttpci/av7110_hw.h
+index 1634aba5cb84..ccb148059406 100644
+--- a/drivers/media/pci/ttpci/av7110_hw.h
++++ b/drivers/media/pci/ttpci/av7110_hw.h
+@@ -377,14 +377,14 @@ extern int av7110_fw_request(struct av7110 *av7110, u16 *request_buf,
+
+ /* DEBI (saa7146 data extension bus interface) access */
+ extern int av7110_debiwrite(struct av7110 *av7110, u32 config,
+- int addr, u32 val, int count);
++ int addr, u32 val, unsigned int count);
+ extern u32 av7110_debiread(struct av7110 *av7110, u32 config,
+- int addr, int count);
++ int addr, unsigned int count);
+
+
+ /* DEBI during interrupt */
+ /* single word writes */
+-static inline void iwdebi(struct av7110 *av7110, u32 config, int addr, u32 val, int count)
++static inline void iwdebi(struct av7110 *av7110, u32 config, int addr, u32 val, unsigned int count)
+ {
+ av7110_debiwrite(av7110, config, addr, val, count);
+ }
+@@ -397,7 +397,7 @@ static inline void mwdebi(struct av7110 *av7110, u32 config, int addr,
+ av7110_debiwrite(av7110, config, addr, 0, count);
+ }
+
+-static inline u32 irdebi(struct av7110 *av7110, u32 config, int addr, u32 val, int count)
++static inline u32 irdebi(struct av7110 *av7110, u32 config, int addr, u32 val, unsigned int count)
+ {
+ u32 res;
+
+@@ -408,7 +408,7 @@ static inline u32 irdebi(struct av7110 *av7110, u32 config, int addr, u32 val, i
+ }
+
+ /* DEBI outside interrupts, only for count <= 4! */
+-static inline void wdebi(struct av7110 *av7110, u32 config, int addr, u32 val, int count)
++static inline void wdebi(struct av7110 *av7110, u32 config, int addr, u32 val, unsigned int count)
+ {
+ unsigned long flags;
+
+@@ -417,7 +417,7 @@ static inline void wdebi(struct av7110 *av7110, u32 config, int addr, u32 val, i
+ spin_unlock_irqrestore(&av7110->debilock, flags);
+ }
+
+-static inline u32 rdebi(struct av7110 *av7110, u32 config, int addr, u32 val, int count)
++static inline u32 rdebi(struct av7110 *av7110, u32 config, int addr, u32 val, unsigned int count)
+ {
+ unsigned long flags;
+ u32 res;
+diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c
+index fd2891c886a3..668eacade975 100644
+--- a/drivers/media/platform/exynos-gsc/gsc-core.c
++++ b/drivers/media/platform/exynos-gsc/gsc-core.c
+@@ -849,9 +849,7 @@ int gsc_prepare_addr(struct gsc_ctx *ctx, struct vb2_buffer *vb,
+
+ if ((frame->fmt->pixelformat == V4L2_PIX_FMT_VYUY) ||
+ (frame->fmt->pixelformat == V4L2_PIX_FMT_YVYU) ||
+- (frame->fmt->pixelformat == V4L2_PIX_FMT_NV61) ||
+ (frame->fmt->pixelformat == V4L2_PIX_FMT_YVU420) ||
+- (frame->fmt->pixelformat == V4L2_PIX_FMT_NV21) ||
+ (frame->fmt->pixelformat == V4L2_PIX_FMT_YVU420M))
+ swap(addr->cb, addr->cr);
+
+diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
+index bee02e644d62..2900c0d4bd4e 100644
+--- a/drivers/mmc/core/sdio_bus.c
++++ b/drivers/mmc/core/sdio_bus.c
+@@ -259,7 +259,7 @@ static void sdio_release_func(struct device *dev)
+ sdio_free_func_cis(func);
+
+ kfree(func->info);
+-
++ kfree(func->tmpbuf);
+ kfree(func);
+ }
+
+@@ -274,6 +274,16 @@ struct sdio_func *sdio_alloc_func(struct mmc_card *card)
+ if (!func)
+ return ERR_PTR(-ENOMEM);
+
++ /*
++ * allocate buffer separately to make sure it's properly aligned for
++ * DMA usage (incl. 64 bit DMA)
++ */
++ func->tmpbuf = kmalloc(4, GFP_KERNEL);
++ if (!func->tmpbuf) {
++ kfree(func);
++ return ERR_PTR(-ENOMEM);
++ }
++
+ func->card = card;
+
+ device_initialize(&func->dev);
+diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c
+index 411c1af92c62..730a2bac124d 100644
+--- a/drivers/net/can/usb/esd_usb2.c
++++ b/drivers/net/can/usb/esd_usb2.c
+@@ -335,7 +335,7 @@ static void esd_usb2_rx_can_msg(struct esd_usb2_net_priv *priv,
+ }
+
+ cf->can_id = id & ESD_IDMASK;
+- cf->can_dlc = get_can_dlc(msg->msg.rx.dlc);
++ cf->can_dlc = get_can_dlc(msg->msg.rx.dlc & ~ESD_RTR);
+
+ if (id & ESD_EXTID)
+ cf->can_id |= CAN_EFF_FLAG;
+diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
+index d47ae410ba6c..3b850f390fd7 100644
+--- a/drivers/net/can/usb/gs_usb.c
++++ b/drivers/net/can/usb/gs_usb.c
+@@ -356,6 +356,8 @@ static void gs_usb_recieve_bulk_callback(struct urb *urb)
+
+ gs_free_tx_context(txc);
+
++ atomic_dec(&dev->active_tx_urbs);
++
+ netif_wake_queue(netdev);
+ }
+
+@@ -444,14 +446,6 @@ static void gs_usb_xmit_callback(struct urb *urb)
+ urb->transfer_buffer_length,
+ urb->transfer_buffer,
+ urb->transfer_dma);
+-
+- atomic_dec(&dev->active_tx_urbs);
+-
+- if (!netif_device_present(netdev))
+- return;
+-
+- if (netif_queue_stopped(netdev))
+- netif_wake_queue(netdev);
+ }
+
+ static netdev_tx_t gs_can_start_xmit(struct sk_buff *skb, struct net_device *netdev)
+diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c
+index 8b17a9065b0b..dc77225227c7 100644
+--- a/drivers/net/can/usb/kvaser_usb.c
++++ b/drivers/net/can/usb/kvaser_usb.c
+@@ -134,6 +134,7 @@ static inline bool kvaser_is_usbcan(const struct usb_device_id *id)
+ #define CMD_RESET_ERROR_COUNTER 49
+ #define CMD_TX_ACKNOWLEDGE 50
+ #define CMD_CAN_ERROR_EVENT 51
++#define CMD_FLUSH_QUEUE_REPLY 68
+
+ #define CMD_LEAF_USB_THROTTLE 77
+ #define CMD_LEAF_LOG_MESSAGE 106
+@@ -1298,6 +1299,11 @@ static void kvaser_usb_handle_message(const struct kvaser_usb *dev,
+ goto warn;
+ break;
+
++ case CMD_FLUSH_QUEUE_REPLY:
++ if (dev->family != KVASER_LEAF)
++ goto warn;
++ break;
++
+ default:
+ warn: dev_warn(dev->udev->dev.parent,
+ "Unhandled message (%d)\n", msg->id);
+@@ -1608,7 +1614,8 @@ static int kvaser_usb_close(struct net_device *netdev)
+ if (err)
+ netdev_warn(netdev, "Cannot flush queue, error %d\n", err);
+
+- if (kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, priv->channel))
++ err = kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, priv->channel);
++ if (err)
+ netdev_warn(netdev, "Cannot reset card, error %d\n", err);
+
+ err = kvaser_usb_stop_chip(priv);
+diff --git a/drivers/net/ethernet/ibm/emac/mal.c b/drivers/net/ethernet/ibm/emac/mal.c
+index fdb5cdb3cd15..81abe46c9e0d 100644
+--- a/drivers/net/ethernet/ibm/emac/mal.c
++++ b/drivers/net/ethernet/ibm/emac/mal.c
+@@ -402,7 +402,7 @@ static int mal_poll(struct napi_struct *napi, int budget)
+ unsigned long flags;
+
+ MAL_DBG2(mal, "poll(%d)" NL, budget);
+- again:
++
+ /* Process TX skbs */
+ list_for_each(l, &mal->poll_list) {
+ struct mal_commac *mc =
+@@ -451,7 +451,6 @@ static int mal_poll(struct napi_struct *napi, int budget)
+ spin_lock_irqsave(&mal->lock, flags);
+ mal_disable_eob_irq(mal);
+ spin_unlock_irqrestore(&mal->lock, flags);
+- goto again;
+ }
+ mc->ops->poll_tx(mc->dev);
+ }
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_clock.c b/drivers/net/ethernet/mellanox/mlx4/en_clock.c
+index dae2ebb53af7..d6677de375af 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_clock.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_clock.c
+@@ -88,10 +88,17 @@ void mlx4_en_remove_timestamp(struct mlx4_en_dev *mdev)
+ }
+ }
+
++#define MLX4_EN_WRAP_AROUND_SEC 10UL
++/* By scheduling the overflow check every 5 seconds, we have a reasonably
++ * good chance we wont miss a wrap around.
++ * TOTO: Use a timer instead of a work queue to increase the guarantee.
++ */
++#define MLX4_EN_OVERFLOW_PERIOD (MLX4_EN_WRAP_AROUND_SEC * HZ / 2)
++
+ void mlx4_en_ptp_overflow_check(struct mlx4_en_dev *mdev)
+ {
+ bool timeout = time_is_before_jiffies(mdev->last_overflow_check +
+- mdev->overflow_period);
++ MLX4_EN_OVERFLOW_PERIOD);
+ unsigned long flags;
+
+ if (timeout) {
+@@ -236,7 +243,6 @@ static const struct ptp_clock_info mlx4_en_ptp_clock_info = {
+ .enable = mlx4_en_phc_enable,
+ };
+
+-#define MLX4_EN_WRAP_AROUND_SEC 10ULL
+
+ /* This function calculates the max shift that enables the user range
+ * of MLX4_EN_WRAP_AROUND_SEC values in the cycles register.
+@@ -258,7 +264,6 @@ void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev)
+ {
+ struct mlx4_dev *dev = mdev->dev;
+ unsigned long flags;
+- u64 ns, zero = 0;
+
+ rwlock_init(&mdev->clock_lock);
+
+@@ -275,13 +280,6 @@ void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev)
+ ktime_to_ns(ktime_get_real()));
+ write_unlock_irqrestore(&mdev->clock_lock, flags);
+
+- /* Calculate period in seconds to call the overflow watchdog - to make
+- * sure counter is checked at least once every wrap around.
+- */
+- ns = cyclecounter_cyc2ns(&mdev->cycles, mdev->cycles.mask, zero, &zero);
+- do_div(ns, NSEC_PER_SEC / 2 / HZ);
+- mdev->overflow_period = ns;
+-
+ /* Configure the PHC */
+ mdev->ptp_clock_info = mlx4_en_ptp_clock_info;
+ snprintf(mdev->ptp_clock_info.name, 16, "mlx4 ptp");
+diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
+index ced5ecab5aa7..115d301f1f61 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/main.c
++++ b/drivers/net/ethernet/mellanox/mlx4/main.c
+@@ -768,8 +768,6 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
+ return -ENOSYS;
+ }
+
+- mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
+-
+ dev->caps.hca_core_clock = hca_param.hca_core_clock;
+
+ memset(&dev_cap, 0, sizeof(dev_cap));
+diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+index 909fcf803c54..239ef9dcc2e0 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
++++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+@@ -408,7 +408,6 @@ struct mlx4_en_dev {
+ struct cyclecounter cycles;
+ struct timecounter clock;
+ unsigned long last_overflow_check;
+- unsigned long overflow_period;
+ struct ptp_clock *ptp_clock;
+ struct ptp_clock_info ptp_clock_info;
+ struct notifier_block nb;
+diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h
+index 06dbbe5201cb..2a22ac72cd1b 100644
+--- a/drivers/net/ethernet/renesas/sh_eth.h
++++ b/drivers/net/ethernet/renesas/sh_eth.h
+@@ -328,7 +328,7 @@ enum FELIC_MODE_BIT {
+ ECMR_DPAD = 0x00200000, ECMR_RZPF = 0x00100000,
+ ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
+ ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
+- ECMR_PMDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
++ ECMR_MPDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
+ ECMR_RTM = 0x00000010, ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004,
+ ECMR_DM = 0x00000002, ECMR_PRM = 0x00000001,
+ };
+diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
+index 2b45d0168c3c..a16b054a4fa6 100644
+--- a/drivers/net/team/team.c
++++ b/drivers/net/team/team.c
+@@ -2334,8 +2334,10 @@ start_again:
+
+ hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
+ TEAM_CMD_OPTIONS_GET);
+- if (!hdr)
++ if (!hdr) {
++ nlmsg_free(skb);
+ return -EMSGSIZE;
++ }
+
+ if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
+ goto nla_put_failure;
+@@ -2602,8 +2604,10 @@ start_again:
+
+ hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
+ TEAM_CMD_PORT_LIST_GET);
+- if (!hdr)
++ if (!hdr) {
++ nlmsg_free(skb);
+ return -EMSGSIZE;
++ }
+
+ if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
+ goto nla_put_failure;
+diff --git a/drivers/net/tun.c b/drivers/net/tun.c
+index 01f5ff84cf6b..12e67e0eb9c9 100644
+--- a/drivers/net/tun.c
++++ b/drivers/net/tun.c
+@@ -1142,11 +1142,13 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
+ switch (tun->flags & TUN_TYPE_MASK) {
+ case IFF_TUN:
+ if (tun->flags & IFF_NO_PI) {
+- switch (skb->data[0] & 0xf0) {
+- case 0x40:
++ u8 ip_version = skb->len ? (skb->data[0] >> 4) : 0;
++
++ switch (ip_version) {
++ case 4:
+ pi.proto = htons(ETH_P_IP);
+ break;
+- case 0x60:
++ case 6:
+ pi.proto = htons(ETH_P_IPV6);
+ break;
+ default:
+diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
+index 7ba8d0885f12..2b47cbae524c 100644
+--- a/drivers/net/usb/Kconfig
++++ b/drivers/net/usb/Kconfig
+@@ -351,7 +351,7 @@ config USB_NET_NET1080
+ optionally with LEDs that indicate traffic
+
+ config USB_NET_PLUSB
+- tristate "Prolific PL-2301/2302/25A1 based cables"
++ tristate "Prolific PL-2301/2302/25A1/27A1 based cables"
+ # if the handshake/init/reset problems, from original 'plusb',
+ # are ever resolved ... then remove "experimental"
+ depends on USB_USBNET
+diff --git a/drivers/net/usb/plusb.c b/drivers/net/usb/plusb.c
+index 1bfe0fcaccf5..7c02231c1a1b 100644
+--- a/drivers/net/usb/plusb.c
++++ b/drivers/net/usb/plusb.c
+@@ -102,7 +102,7 @@ static int pl_reset(struct usbnet *dev)
+ }
+
+ static const struct driver_info prolific_info = {
+- .description = "Prolific PL-2301/PL-2302/PL-25A1",
++ .description = "Prolific PL-2301/PL-2302/PL-25A1/PL-27A1",
+ .flags = FLAG_POINTTOPOINT | FLAG_NO_SETINT,
+ /* some PL-2302 versions seem to fail usb_set_interface() */
+ .reset = pl_reset,
+@@ -139,6 +139,17 @@ static const struct usb_device_id products [] = {
+ * Host-to-Host Cable
+ */
+ .driver_info = (unsigned long) &prolific_info,
++
++},
++
++/* super speed cables */
++{
++ USB_DEVICE(0x067b, 0x27a1), /* PL-27A1, no eeprom
++ * also: goobay Active USB 3.0
++ * Data Link,
++ * Unitek Y-3501
++ */
++ .driver_info = (unsigned long) &prolific_info,
+ },
+
+ { }, // END
+@@ -158,5 +169,5 @@ static struct usb_driver plusb_driver = {
+ module_usb_driver(plusb_driver);
+
+ MODULE_AUTHOR("David Brownell");
+-MODULE_DESCRIPTION("Prolific PL-2301/2302/25A1 USB Host to Host Link Driver");
++MODULE_DESCRIPTION("Prolific PL-2301/2302/25A1/27A1 USB Host to Host Link Driver");
+ MODULE_LICENSE("GPL");
+diff --git a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+index c304b66af5c6..ab9f55344acd 100644
+--- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+@@ -869,7 +869,7 @@ static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
+
+ eth_broadcast_addr(params_le->bssid);
+ params_le->bss_type = DOT11_BSSTYPE_ANY;
+- params_le->scan_type = 0;
++ params_le->scan_type = BRCMF_SCANTYPE_ACTIVE;
+ params_le->channel_num = 0;
+ params_le->nprobes = cpu_to_le32(-1);
+ params_le->active_time = cpu_to_le32(-1);
+@@ -877,12 +877,9 @@ static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
+ params_le->home_time = cpu_to_le32(-1);
+ memset(¶ms_le->ssid_le, 0, sizeof(params_le->ssid_le));
+
+- /* if request is null exit so it will be all channel broadcast scan */
+- if (!request)
+- return;
+-
+ n_ssids = request->n_ssids;
+ n_channels = request->n_channels;
++
+ /* Copy channel array if applicable */
+ brcmf_dbg(SCAN, "### List of channelspecs to scan ### %d\n",
+ n_channels);
+@@ -919,16 +916,8 @@ static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
+ ptr += sizeof(ssid_le);
+ }
+ } else {
+- brcmf_dbg(SCAN, "Broadcast scan %p\n", request->ssids);
+- if ((request->ssids) && request->ssids->ssid_len) {
+- brcmf_dbg(SCAN, "SSID %s len=%d\n",
+- params_le->ssid_le.SSID,
+- request->ssids->ssid_len);
+- params_le->ssid_le.SSID_len =
+- cpu_to_le32(request->ssids->ssid_len);
+- memcpy(¶ms_le->ssid_le.SSID, request->ssids->ssid,
+- request->ssids->ssid_len);
+- }
++ brcmf_dbg(SCAN, "Performing passive scan\n");
++ params_le->scan_type = BRCMF_SCANTYPE_PASSIVE;
+ }
+ /* Adding mask to channel numbers */
+ params_le->channel_num =
+@@ -2826,6 +2815,7 @@ brcmf_cfg80211_escan_handler(struct brcmf_if *ifp,
+ struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
+ s32 status;
+ struct brcmf_escan_result_le *escan_result_le;
++ u32 escan_buflen;
+ struct brcmf_bss_info_le *bss_info_le;
+ struct brcmf_bss_info_le *bss = NULL;
+ u32 bi_length;
+@@ -2842,11 +2832,23 @@ brcmf_cfg80211_escan_handler(struct brcmf_if *ifp,
+
+ if (status == BRCMF_E_STATUS_PARTIAL) {
+ brcmf_dbg(SCAN, "ESCAN Partial result\n");
++ if (e->datalen < sizeof(*escan_result_le)) {
++ brcmf_err("invalid event data length\n");
++ goto exit;
++ }
+ escan_result_le = (struct brcmf_escan_result_le *) data;
+ if (!escan_result_le) {
+ brcmf_err("Invalid escan result (NULL pointer)\n");
+ goto exit;
+ }
++ escan_buflen = le32_to_cpu(escan_result_le->buflen);
++ if (escan_buflen > WL_ESCAN_BUF_SIZE ||
++ escan_buflen > e->datalen ||
++ escan_buflen < sizeof(*escan_result_le)) {
++ brcmf_err("Invalid escan buffer length: %d\n",
++ escan_buflen);
++ goto exit;
++ }
+ if (le16_to_cpu(escan_result_le->bss_count) != 1) {
+ brcmf_err("Invalid bss_count %d: ignoring\n",
+ escan_result_le->bss_count);
+@@ -2863,9 +2865,8 @@ brcmf_cfg80211_escan_handler(struct brcmf_if *ifp,
+ }
+
+ bi_length = le32_to_cpu(bss_info_le->length);
+- if (bi_length != (le32_to_cpu(escan_result_le->buflen) -
+- WL_ESCAN_RESULTS_FIXED_SIZE)) {
+- brcmf_err("Invalid bss_info length %d: ignoring\n",
++ if (bi_length != escan_buflen - WL_ESCAN_RESULTS_FIXED_SIZE) {
++ brcmf_err("Ignoring invalid bss_info length: %d\n",
+ bi_length);
+ goto exit;
+ }
+diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
+index 374920965108..909f4571e5c7 100644
+--- a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
++++ b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
+@@ -41,6 +41,11 @@
+ #define BRCMF_SCAN_PARAMS_COUNT_MASK 0x0000ffff
+ #define BRCMF_SCAN_PARAMS_NSSID_SHIFT 16
+
++/* scan type definitions */
++#define BRCMF_SCANTYPE_DEFAULT 0xFF
++#define BRCMF_SCANTYPE_ACTIVE 0
++#define BRCMF_SCANTYPE_PASSIVE 1
++
+ /* primary (ie tx) key */
+ #define BRCMF_PRIMARY_KEY (1 << 1)
+ #define DOT11_BSSTYPE_ANY 2
+diff --git a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_n.c b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_n.c
+index 99dac9b8a082..c75bfd3f8cb3 100644
+--- a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_n.c
++++ b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_n.c
+@@ -14764,8 +14764,8 @@ static void wlc_phy_ipa_restore_tx_digi_filts_nphy(struct brcms_phy *pi)
+ }
+
+ static void
+-wlc_phy_set_rfseq_nphy(struct brcms_phy *pi, u8 cmd, u8 *events, u8 *dlys,
+- u8 len)
++wlc_phy_set_rfseq_nphy(struct brcms_phy *pi, u8 cmd, const u8 *events,
++ const u8 *dlys, u8 len)
+ {
+ u32 t1_offset, t2_offset;
+ u8 ctr;
+@@ -15240,16 +15240,16 @@ static void wlc_phy_workarounds_nphy_gainctrl_2057_rev5(struct brcms_phy *pi)
+ static void wlc_phy_workarounds_nphy_gainctrl_2057_rev6(struct brcms_phy *pi)
+ {
+ u16 currband;
+- s8 lna1G_gain_db_rev7[] = { 9, 14, 19, 24 };
+- s8 *lna1_gain_db = NULL;
+- s8 *lna1_gain_db_2 = NULL;
+- s8 *lna2_gain_db = NULL;
+- s8 tiaA_gain_db_rev7[] = { -9, -6, -3, 0, 3, 3, 3, 3, 3, 3 };
+- s8 *tia_gain_db;
+- s8 tiaA_gainbits_rev7[] = { 0, 1, 2, 3, 4, 4, 4, 4, 4, 4 };
+- s8 *tia_gainbits;
+- u16 rfseqA_init_gain_rev7[] = { 0x624f, 0x624f };
+- u16 *rfseq_init_gain;
++ static const s8 lna1G_gain_db_rev7[] = { 9, 14, 19, 24 };
++ const s8 *lna1_gain_db = NULL;
++ const s8 *lna1_gain_db_2 = NULL;
++ const s8 *lna2_gain_db = NULL;
++ static const s8 tiaA_gain_db_rev7[] = { -9, -6, -3, 0, 3, 3, 3, 3, 3, 3 };
++ const s8 *tia_gain_db;
++ static const s8 tiaA_gainbits_rev7[] = { 0, 1, 2, 3, 4, 4, 4, 4, 4, 4 };
++ const s8 *tia_gainbits;
++ static const u16 rfseqA_init_gain_rev7[] = { 0x624f, 0x624f };
++ const u16 *rfseq_init_gain;
+ u16 init_gaincode;
+ u16 clip1hi_gaincode;
+ u16 clip1md_gaincode = 0;
+@@ -15310,10 +15310,9 @@ static void wlc_phy_workarounds_nphy_gainctrl_2057_rev6(struct brcms_phy *pi)
+
+ if ((freq <= 5080) || (freq == 5825)) {
+
+- s8 lna1A_gain_db_rev7[] = { 11, 16, 20, 24 };
+- s8 lna1A_gain_db_2_rev7[] = {
+- 11, 17, 22, 25};
+- s8 lna2A_gain_db_rev7[] = { -1, 6, 10, 14 };
++ static const s8 lna1A_gain_db_rev7[] = { 11, 16, 20, 24 };
++ static const s8 lna1A_gain_db_2_rev7[] = { 11, 17, 22, 25};
++ static const s8 lna2A_gain_db_rev7[] = { -1, 6, 10, 14 };
+
+ crsminu_th = 0x3e;
+ lna1_gain_db = lna1A_gain_db_rev7;
+@@ -15321,10 +15320,9 @@ static void wlc_phy_workarounds_nphy_gainctrl_2057_rev6(struct brcms_phy *pi)
+ lna2_gain_db = lna2A_gain_db_rev7;
+ } else if ((freq >= 5500) && (freq <= 5700)) {
+
+- s8 lna1A_gain_db_rev7[] = { 11, 17, 21, 25 };
+- s8 lna1A_gain_db_2_rev7[] = {
+- 12, 18, 22, 26};
+- s8 lna2A_gain_db_rev7[] = { 1, 8, 12, 16 };
++ static const s8 lna1A_gain_db_rev7[] = { 11, 17, 21, 25 };
++ static const s8 lna1A_gain_db_2_rev7[] = { 12, 18, 22, 26};
++ static const s8 lna2A_gain_db_rev7[] = { 1, 8, 12, 16 };
+
+ crsminu_th = 0x45;
+ clip1md_gaincode_B = 0x14;
+@@ -15335,10 +15333,9 @@ static void wlc_phy_workarounds_nphy_gainctrl_2057_rev6(struct brcms_phy *pi)
+ lna2_gain_db = lna2A_gain_db_rev7;
+ } else {
+
+- s8 lna1A_gain_db_rev7[] = { 12, 18, 22, 26 };
+- s8 lna1A_gain_db_2_rev7[] = {
+- 12, 18, 22, 26};
+- s8 lna2A_gain_db_rev7[] = { -1, 6, 10, 14 };
++ static const s8 lna1A_gain_db_rev7[] = { 12, 18, 22, 26 };
++ static const s8 lna1A_gain_db_2_rev7[] = { 12, 18, 22, 26};
++ static const s8 lna2A_gain_db_rev7[] = { -1, 6, 10, 14 };
+
+ crsminu_th = 0x41;
+ lna1_gain_db = lna1A_gain_db_rev7;
+@@ -15450,65 +15447,65 @@ static void wlc_phy_workarounds_nphy_gainctrl(struct brcms_phy *pi)
+ NPHY_RFSEQ_CMD_CLR_HIQ_DIS,
+ NPHY_RFSEQ_CMD_SET_HPF_BW
+ };
+- u8 rfseq_updategainu_dlys[] = { 10, 30, 1 };
+- s8 lna1G_gain_db[] = { 7, 11, 16, 23 };
+- s8 lna1G_gain_db_rev4[] = { 8, 12, 17, 25 };
+- s8 lna1G_gain_db_rev5[] = { 9, 13, 18, 26 };
+- s8 lna1G_gain_db_rev6[] = { 8, 13, 18, 25 };
+- s8 lna1G_gain_db_rev6_224B0[] = { 10, 14, 19, 27 };
+- s8 lna1A_gain_db[] = { 7, 11, 17, 23 };
+- s8 lna1A_gain_db_rev4[] = { 8, 12, 18, 23 };
+- s8 lna1A_gain_db_rev5[] = { 6, 10, 16, 21 };
+- s8 lna1A_gain_db_rev6[] = { 6, 10, 16, 21 };
+- s8 *lna1_gain_db = NULL;
+- s8 lna2G_gain_db[] = { -5, 6, 10, 14 };
+- s8 lna2G_gain_db_rev5[] = { -3, 7, 11, 16 };
+- s8 lna2G_gain_db_rev6[] = { -5, 6, 10, 14 };
+- s8 lna2G_gain_db_rev6_224B0[] = { -5, 6, 10, 15 };
+- s8 lna2A_gain_db[] = { -6, 2, 6, 10 };
+- s8 lna2A_gain_db_rev4[] = { -5, 2, 6, 10 };
+- s8 lna2A_gain_db_rev5[] = { -7, 0, 4, 8 };
+- s8 lna2A_gain_db_rev6[] = { -7, 0, 4, 8 };
+- s8 *lna2_gain_db = NULL;
+- s8 tiaG_gain_db[] = {
++ static const u8 rfseq_updategainu_dlys[] = { 10, 30, 1 };
++ static const s8 lna1G_gain_db[] = { 7, 11, 16, 23 };
++ static const s8 lna1G_gain_db_rev4[] = { 8, 12, 17, 25 };
++ static const s8 lna1G_gain_db_rev5[] = { 9, 13, 18, 26 };
++ static const s8 lna1G_gain_db_rev6[] = { 8, 13, 18, 25 };
++ static const s8 lna1G_gain_db_rev6_224B0[] = { 10, 14, 19, 27 };
++ static const s8 lna1A_gain_db[] = { 7, 11, 17, 23 };
++ static const s8 lna1A_gain_db_rev4[] = { 8, 12, 18, 23 };
++ static const s8 lna1A_gain_db_rev5[] = { 6, 10, 16, 21 };
++ static const s8 lna1A_gain_db_rev6[] = { 6, 10, 16, 21 };
++ const s8 *lna1_gain_db = NULL;
++ static const s8 lna2G_gain_db[] = { -5, 6, 10, 14 };
++ static const s8 lna2G_gain_db_rev5[] = { -3, 7, 11, 16 };
++ static const s8 lna2G_gain_db_rev6[] = { -5, 6, 10, 14 };
++ static const s8 lna2G_gain_db_rev6_224B0[] = { -5, 6, 10, 15 };
++ static const s8 lna2A_gain_db[] = { -6, 2, 6, 10 };
++ static const s8 lna2A_gain_db_rev4[] = { -5, 2, 6, 10 };
++ static const s8 lna2A_gain_db_rev5[] = { -7, 0, 4, 8 };
++ static const s8 lna2A_gain_db_rev6[] = { -7, 0, 4, 8 };
++ const s8 *lna2_gain_db = NULL;
++ static const s8 tiaG_gain_db[] = {
+ 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A };
+- s8 tiaA_gain_db[] = {
++ static const s8 tiaA_gain_db[] = {
+ 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13 };
+- s8 tiaA_gain_db_rev4[] = {
++ static const s8 tiaA_gain_db_rev4[] = {
+ 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d };
+- s8 tiaA_gain_db_rev5[] = {
++ static const s8 tiaA_gain_db_rev5[] = {
+ 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d };
+- s8 tiaA_gain_db_rev6[] = {
++ static const s8 tiaA_gain_db_rev6[] = {
+ 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d };
+- s8 *tia_gain_db;
+- s8 tiaG_gainbits[] = {
++ const s8 *tia_gain_db;
++ static const s8 tiaG_gainbits[] = {
+ 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 };
+- s8 tiaA_gainbits[] = {
++ static const s8 tiaA_gainbits[] = {
+ 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06 };
+- s8 tiaA_gainbits_rev4[] = {
++ static const s8 tiaA_gainbits_rev4[] = {
+ 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04 };
+- s8 tiaA_gainbits_rev5[] = {
++ static const s8 tiaA_gainbits_rev5[] = {
+ 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04 };
+- s8 tiaA_gainbits_rev6[] = {
++ static const s8 tiaA_gainbits_rev6[] = {
+ 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04 };
+- s8 *tia_gainbits;
+- s8 lpf_gain_db[] = { 0x00, 0x06, 0x0c, 0x12, 0x12, 0x12 };
+- s8 lpf_gainbits[] = { 0x00, 0x01, 0x02, 0x03, 0x03, 0x03 };
+- u16 rfseqG_init_gain[] = { 0x613f, 0x613f, 0x613f, 0x613f };
+- u16 rfseqG_init_gain_rev4[] = { 0x513f, 0x513f, 0x513f, 0x513f };
+- u16 rfseqG_init_gain_rev5[] = { 0x413f, 0x413f, 0x413f, 0x413f };
+- u16 rfseqG_init_gain_rev5_elna[] = {
++ const s8 *tia_gainbits;
++ static const s8 lpf_gain_db[] = { 0x00, 0x06, 0x0c, 0x12, 0x12, 0x12 };
++ static const s8 lpf_gainbits[] = { 0x00, 0x01, 0x02, 0x03, 0x03, 0x03 };
++ static const u16 rfseqG_init_gain[] = { 0x613f, 0x613f, 0x613f, 0x613f };
++ static const u16 rfseqG_init_gain_rev4[] = { 0x513f, 0x513f, 0x513f, 0x513f };
++ static const u16 rfseqG_init_gain_rev5[] = { 0x413f, 0x413f, 0x413f, 0x413f };
++ static const u16 rfseqG_init_gain_rev5_elna[] = {
+ 0x013f, 0x013f, 0x013f, 0x013f };
+- u16 rfseqG_init_gain_rev6[] = { 0x513f, 0x513f };
+- u16 rfseqG_init_gain_rev6_224B0[] = { 0x413f, 0x413f };
+- u16 rfseqG_init_gain_rev6_elna[] = { 0x113f, 0x113f };
+- u16 rfseqA_init_gain[] = { 0x516f, 0x516f, 0x516f, 0x516f };
+- u16 rfseqA_init_gain_rev4[] = { 0x614f, 0x614f, 0x614f, 0x614f };
+- u16 rfseqA_init_gain_rev4_elna[] = {
++ static const u16 rfseqG_init_gain_rev6[] = { 0x513f, 0x513f };
++ static const u16 rfseqG_init_gain_rev6_224B0[] = { 0x413f, 0x413f };
++ static const u16 rfseqG_init_gain_rev6_elna[] = { 0x113f, 0x113f };
++ static const u16 rfseqA_init_gain[] = { 0x516f, 0x516f, 0x516f, 0x516f };
++ static const u16 rfseqA_init_gain_rev4[] = { 0x614f, 0x614f, 0x614f, 0x614f };
++ static const u16 rfseqA_init_gain_rev4_elna[] = {
+ 0x314f, 0x314f, 0x314f, 0x314f };
+- u16 rfseqA_init_gain_rev5[] = { 0x714f, 0x714f, 0x714f, 0x714f };
+- u16 rfseqA_init_gain_rev6[] = { 0x714f, 0x714f };
+- u16 *rfseq_init_gain;
++ static const u16 rfseqA_init_gain_rev5[] = { 0x714f, 0x714f, 0x714f, 0x714f };
++ static const u16 rfseqA_init_gain_rev6[] = { 0x714f, 0x714f };
++ const u16 *rfseq_init_gain;
+ u16 initG_gaincode = 0x627e;
+ u16 initG_gaincode_rev4 = 0x527e;
+ u16 initG_gaincode_rev5 = 0x427e;
+@@ -15538,10 +15535,10 @@ static void wlc_phy_workarounds_nphy_gainctrl(struct brcms_phy *pi)
+ u16 clip1mdA_gaincode_rev6 = 0x2084;
+ u16 clip1md_gaincode = 0;
+ u16 clip1loG_gaincode = 0x0074;
+- u16 clip1loG_gaincode_rev5[] = {
++ static const u16 clip1loG_gaincode_rev5[] = {
+ 0x0062, 0x0064, 0x006a, 0x106a, 0x106c, 0x1074, 0x107c, 0x207c
+ };
+- u16 clip1loG_gaincode_rev6[] = {
++ static const u16 clip1loG_gaincode_rev6[] = {
+ 0x106a, 0x106c, 0x1074, 0x107c, 0x007e, 0x107e, 0x207e, 0x307e
+ };
+ u16 clip1loG_gaincode_rev6_224B0 = 0x1074;
+@@ -16066,7 +16063,7 @@ static void wlc_phy_workarounds_nphy_gainctrl(struct brcms_phy *pi)
+
+ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
+ {
+- u8 rfseq_rx2tx_events[] = {
++ static const u8 rfseq_rx2tx_events[] = {
+ NPHY_RFSEQ_CMD_NOP,
+ NPHY_RFSEQ_CMD_RXG_FBW,
+ NPHY_RFSEQ_CMD_TR_SWITCH,
+@@ -16076,7 +16073,7 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
+ NPHY_RFSEQ_CMD_EXT_PA
+ };
+ u8 rfseq_rx2tx_dlys[] = { 8, 6, 6, 2, 4, 60, 1 };
+- u8 rfseq_tx2rx_events[] = {
++ static const u8 rfseq_tx2rx_events[] = {
+ NPHY_RFSEQ_CMD_NOP,
+ NPHY_RFSEQ_CMD_EXT_PA,
+ NPHY_RFSEQ_CMD_TX_GAIN,
+@@ -16085,8 +16082,8 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
+ NPHY_RFSEQ_CMD_RXG_FBW,
+ NPHY_RFSEQ_CMD_CLR_HIQ_DIS
+ };
+- u8 rfseq_tx2rx_dlys[] = { 8, 6, 2, 4, 4, 6, 1 };
+- u8 rfseq_tx2rx_events_rev3[] = {
++ static const u8 rfseq_tx2rx_dlys[] = { 8, 6, 2, 4, 4, 6, 1 };
++ static const u8 rfseq_tx2rx_events_rev3[] = {
+ NPHY_REV3_RFSEQ_CMD_EXT_PA,
+ NPHY_REV3_RFSEQ_CMD_INT_PA_PU,
+ NPHY_REV3_RFSEQ_CMD_TX_GAIN,
+@@ -16096,7 +16093,7 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
+ NPHY_REV3_RFSEQ_CMD_CLR_HIQ_DIS,
+ NPHY_REV3_RFSEQ_CMD_END
+ };
+- u8 rfseq_tx2rx_dlys_rev3[] = { 8, 4, 2, 2, 4, 4, 6, 1 };
++ static const u8 rfseq_tx2rx_dlys_rev3[] = { 8, 4, 2, 2, 4, 4, 6, 1 };
+ u8 rfseq_rx2tx_events_rev3[] = {
+ NPHY_REV3_RFSEQ_CMD_NOP,
+ NPHY_REV3_RFSEQ_CMD_RXG_FBW,
+@@ -16110,7 +16107,7 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
+ };
+ u8 rfseq_rx2tx_dlys_rev3[] = { 8, 6, 6, 4, 4, 18, 42, 1, 1 };
+
+- u8 rfseq_rx2tx_events_rev3_ipa[] = {
++ static const u8 rfseq_rx2tx_events_rev3_ipa[] = {
+ NPHY_REV3_RFSEQ_CMD_NOP,
+ NPHY_REV3_RFSEQ_CMD_RXG_FBW,
+ NPHY_REV3_RFSEQ_CMD_TR_SWITCH,
+@@ -16121,15 +16118,15 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
+ NPHY_REV3_RFSEQ_CMD_INT_PA_PU,
+ NPHY_REV3_RFSEQ_CMD_END
+ };
+- u8 rfseq_rx2tx_dlys_rev3_ipa[] = { 8, 6, 6, 4, 4, 16, 43, 1, 1 };
+- u16 rfseq_rx2tx_dacbufpu_rev7[] = { 0x10f, 0x10f };
++ static const u8 rfseq_rx2tx_dlys_rev3_ipa[] = { 8, 6, 6, 4, 4, 16, 43, 1, 1 };
++ static const u16 rfseq_rx2tx_dacbufpu_rev7[] = { 0x10f, 0x10f };
+
+ s16 alpha0, alpha1, alpha2;
+ s16 beta0, beta1, beta2;
+ u32 leg_data_weights, ht_data_weights, nss1_data_weights,
+ stbc_data_weights;
+ u8 chan_freq_range = 0;
+- u16 dac_control = 0x0002;
++ static const u16 dac_control = 0x0002;
+ u16 aux_adc_vmid_rev7_core0[] = { 0x8e, 0x96, 0x96, 0x96 };
+ u16 aux_adc_vmid_rev7_core1[] = { 0x8f, 0x9f, 0x9f, 0x96 };
+ u16 aux_adc_vmid_rev4[] = { 0xa2, 0xb4, 0xb4, 0x89 };
+@@ -16139,8 +16136,8 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
+ u16 aux_adc_gain_rev4[] = { 0x02, 0x02, 0x02, 0x00 };
+ u16 aux_adc_gain_rev3[] = { 0x02, 0x02, 0x02, 0x00 };
+ u16 *aux_adc_gain;
+- u16 sk_adc_vmid[] = { 0xb4, 0xb4, 0xb4, 0x24 };
+- u16 sk_adc_gain[] = { 0x02, 0x02, 0x02, 0x02 };
++ static const u16 sk_adc_vmid[] = { 0xb4, 0xb4, 0xb4, 0x24 };
++ static const u16 sk_adc_gain[] = { 0x02, 0x02, 0x02, 0x02 };
+ s32 min_nvar_val = 0x18d;
+ s32 min_nvar_offset_6mbps = 20;
+ u8 pdetrange;
+@@ -16151,9 +16148,9 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
+ u16 rfseq_rx2tx_lpf_h_hpc_rev7 = 0x77;
+ u16 rfseq_tx2rx_lpf_h_hpc_rev7 = 0x77;
+ u16 rfseq_pktgn_lpf_h_hpc_rev7 = 0x77;
+- u16 rfseq_htpktgn_lpf_hpc_rev7[] = { 0x77, 0x11, 0x11 };
+- u16 rfseq_pktgn_lpf_hpc_rev7[] = { 0x11, 0x11 };
+- u16 rfseq_cckpktgn_lpf_hpc_rev7[] = { 0x11, 0x11 };
++ static const u16 rfseq_htpktgn_lpf_hpc_rev7[] = { 0x77, 0x11, 0x11 };
++ static const u16 rfseq_pktgn_lpf_hpc_rev7[] = { 0x11, 0x11 };
++ static const u16 rfseq_cckpktgn_lpf_hpc_rev7[] = { 0x11, 0x11 };
+ u16 ipalvlshift_3p3_war_en = 0;
+ u16 rccal_bcap_val, rccal_scap_val;
+ u16 rccal_tx20_11b_bcap = 0;
+@@ -24291,13 +24288,13 @@ static void wlc_phy_update_txcal_ladder_nphy(struct brcms_phy *pi, u16 core)
+ u16 bbmult;
+ u16 tblentry;
+
+- struct nphy_txiqcal_ladder ladder_lo[] = {
++ static const struct nphy_txiqcal_ladder ladder_lo[] = {
+ {3, 0}, {4, 0}, {6, 0}, {9, 0}, {13, 0}, {18, 0},
+ {25, 0}, {25, 1}, {25, 2}, {25, 3}, {25, 4}, {25, 5},
+ {25, 6}, {25, 7}, {35, 7}, {50, 7}, {71, 7}, {100, 7}
+ };
+
+- struct nphy_txiqcal_ladder ladder_iq[] = {
++ static const struct nphy_txiqcal_ladder ladder_iq[] = {
+ {3, 0}, {4, 0}, {6, 0}, {9, 0}, {13, 0}, {18, 0},
+ {25, 0}, {35, 0}, {50, 0}, {71, 0}, {100, 0}, {100, 1},
+ {100, 2}, {100, 3}, {100, 4}, {100, 5}, {100, 6}, {100, 7}
+@@ -25773,67 +25770,67 @@ wlc_phy_cal_txiqlo_nphy(struct brcms_phy *pi, struct nphy_txgains target_gain,
+ u16 cal_gain[2];
+ struct nphy_iqcal_params cal_params[2];
+ u32 tbl_len;
+- void *tbl_ptr;
++ const void *tbl_ptr;
+ bool ladder_updated[2];
+ u8 mphase_cal_lastphase = 0;
+ int bcmerror = 0;
+ bool phyhang_avoid_state = false;
+
+- u16 tbl_tx_iqlo_cal_loft_ladder_20[] = {
++ static const u16 tbl_tx_iqlo_cal_loft_ladder_20[] = {
+ 0x0300, 0x0500, 0x0700, 0x0900, 0x0d00, 0x1100, 0x1900, 0x1901,
+ 0x1902,
+ 0x1903, 0x1904, 0x1905, 0x1906, 0x1907, 0x2407, 0x3207, 0x4607,
+ 0x6407
+ };
+
+- u16 tbl_tx_iqlo_cal_iqimb_ladder_20[] = {
++ static const u16 tbl_tx_iqlo_cal_iqimb_ladder_20[] = {
+ 0x0200, 0x0300, 0x0600, 0x0900, 0x0d00, 0x1100, 0x1900, 0x2400,
+ 0x3200,
+ 0x4600, 0x6400, 0x6401, 0x6402, 0x6403, 0x6404, 0x6405, 0x6406,
+ 0x6407
+ };
+
+- u16 tbl_tx_iqlo_cal_loft_ladder_40[] = {
++ static const u16 tbl_tx_iqlo_cal_loft_ladder_40[] = {
+ 0x0200, 0x0300, 0x0400, 0x0700, 0x0900, 0x0c00, 0x1200, 0x1201,
+ 0x1202,
+ 0x1203, 0x1204, 0x1205, 0x1206, 0x1207, 0x1907, 0x2307, 0x3207,
+ 0x4707
+ };
+
+- u16 tbl_tx_iqlo_cal_iqimb_ladder_40[] = {
++ static const u16 tbl_tx_iqlo_cal_iqimb_ladder_40[] = {
+ 0x0100, 0x0200, 0x0400, 0x0700, 0x0900, 0x0c00, 0x1200, 0x1900,
+ 0x2300,
+ 0x3200, 0x4700, 0x4701, 0x4702, 0x4703, 0x4704, 0x4705, 0x4706,
+ 0x4707
+ };
+
+- u16 tbl_tx_iqlo_cal_startcoefs[] = {
++ static const u16 tbl_tx_iqlo_cal_startcoefs[] = {
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000
+ };
+
+- u16 tbl_tx_iqlo_cal_cmds_fullcal[] = {
++ static const u16 tbl_tx_iqlo_cal_cmds_fullcal[] = {
+ 0x8123, 0x8264, 0x8086, 0x8245, 0x8056,
+ 0x9123, 0x9264, 0x9086, 0x9245, 0x9056
+ };
+
+- u16 tbl_tx_iqlo_cal_cmds_recal[] = {
++ static const u16 tbl_tx_iqlo_cal_cmds_recal[] = {
+ 0x8101, 0x8253, 0x8053, 0x8234, 0x8034,
+ 0x9101, 0x9253, 0x9053, 0x9234, 0x9034
+ };
+
+- u16 tbl_tx_iqlo_cal_startcoefs_nphyrev3[] = {
++ static const u16 tbl_tx_iqlo_cal_startcoefs_nphyrev3[] = {
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000
+ };
+
+- u16 tbl_tx_iqlo_cal_cmds_fullcal_nphyrev3[] = {
++ static const u16 tbl_tx_iqlo_cal_cmds_fullcal_nphyrev3[] = {
+ 0x8434, 0x8334, 0x8084, 0x8267, 0x8056, 0x8234,
+ 0x9434, 0x9334, 0x9084, 0x9267, 0x9056, 0x9234
+ };
+
+- u16 tbl_tx_iqlo_cal_cmds_recal_nphyrev3[] = {
++ static const u16 tbl_tx_iqlo_cal_cmds_recal_nphyrev3[] = {
+ 0x8423, 0x8323, 0x8073, 0x8256, 0x8045, 0x8223,
+ 0x9423, 0x9323, 0x9073, 0x9256, 0x9045, 0x9223
+ };
+diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+index 90e8b662e44d..d82d2b787c7c 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
++++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+@@ -1766,6 +1766,11 @@ static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
+ struct iwl_mvm_mc_iter_data *data = _data;
+ struct iwl_mvm *mvm = data->mvm;
+ struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
++ struct iwl_host_cmd hcmd = {
++ .id = MCAST_FILTER_CMD,
++ .flags = CMD_ASYNC,
++ .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
++ };
+ int ret, len;
+
+ /* if we don't have free ports, mcast frames will be dropped */
+@@ -1780,7 +1785,10 @@ static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
+ memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
+ len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
+
+- ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
++ hcmd.len[0] = len;
++ hcmd.data[0] = cmd;
++
++ ret = iwl_mvm_send_cmd(mvm, &hcmd);
+ if (ret)
+ IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
+ }
+diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
+index cdbad7d72afa..03097016fd43 100644
+--- a/drivers/net/wireless/mac80211_hwsim.c
++++ b/drivers/net/wireless/mac80211_hwsim.c
+@@ -2883,6 +2883,7 @@ static int hwsim_register_received_nl(struct sk_buff *skb_2,
+ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
+ {
+ struct hwsim_new_radio_params param = { 0 };
++ const char *hwname = NULL;
+
+ param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
+ param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
+@@ -2896,8 +2897,14 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
+ if (info->attrs[HWSIM_ATTR_NO_VIF])
+ param.no_vif = true;
+
+- if (info->attrs[HWSIM_ATTR_RADIO_NAME])
+- param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
++ if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
++ hwname = kasprintf(GFP_KERNEL, "%.*s",
++ nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
++ (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
++ if (!hwname)
++ return -ENOMEM;
++ param.hwname = hwname;
++ }
+
+ if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
+ param.use_chanctx = true;
+@@ -2925,11 +2932,15 @@ static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
+ s64 idx = -1;
+ const char *hwname = NULL;
+
+- if (info->attrs[HWSIM_ATTR_RADIO_ID])
++ if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
+ idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
+- else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
+- hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
+- else
++ } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
++ hwname = kasprintf(GFP_KERNEL, "%.*s",
++ nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
++ (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
++ if (!hwname)
++ return -ENOMEM;
++ } else
+ return -EINVAL;
+
+ spin_lock_bh(&hwsim_radio_lock);
+@@ -2938,7 +2949,8 @@ static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
+ if (data->idx != idx)
+ continue;
+ } else {
+- if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
++ if (!hwname ||
++ strcmp(hwname, wiphy_name(data->hw->wiphy)))
+ continue;
+ }
+
+@@ -2946,10 +2958,12 @@ static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
+ spin_unlock_bh(&hwsim_radio_lock);
+ mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
+ info);
++ kfree(hwname);
+ return 0;
+ }
+ spin_unlock_bh(&hwsim_radio_lock);
+
++ kfree(hwname);
+ return -ENODEV;
+ }
+
+diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
+index 1cfaafc670a8..c8be27dd8e59 100644
+--- a/drivers/pci/pci-sysfs.c
++++ b/drivers/pci/pci-sysfs.c
+@@ -519,7 +519,7 @@ static ssize_t driver_override_store(struct device *dev,
+ const char *buf, size_t count)
+ {
+ struct pci_dev *pdev = to_pci_dev(dev);
+- char *driver_override, *old = pdev->driver_override, *cp;
++ char *driver_override, *old, *cp;
+
+ /* We need to keep extra room for a newline */
+ if (count >= (PAGE_SIZE - 1))
+@@ -533,12 +533,15 @@ static ssize_t driver_override_store(struct device *dev,
+ if (cp)
+ *cp = '\0';
+
++ device_lock(dev);
++ old = pdev->driver_override;
+ if (strlen(driver_override)) {
+ pdev->driver_override = driver_override;
+ } else {
+ kfree(driver_override);
+ pdev->driver_override = NULL;
+ }
++ device_unlock(dev);
+
+ kfree(old);
+
+@@ -549,8 +552,12 @@ static ssize_t driver_override_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+ {
+ struct pci_dev *pdev = to_pci_dev(dev);
++ ssize_t len;
+
+- return snprintf(buf, PAGE_SIZE, "%s\n", pdev->driver_override);
++ device_lock(dev);
++ len = snprintf(buf, PAGE_SIZE, "%s\n", pdev->driver_override);
++ device_unlock(dev);
++ return len;
+ }
+ static DEVICE_ATTR_RW(driver_override);
+
+diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
+index 6de09147e791..ad42fe8e6d23 100644
+--- a/drivers/s390/scsi/zfcp_scsi.c
++++ b/drivers/s390/scsi/zfcp_scsi.c
+@@ -225,7 +225,7 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
+ zfcp_erp_wait(adapter);
+ ret = fc_block_scsi_eh(scpnt);
+ if (ret) {
+- zfcp_dbf_scsi_devreset("fiof", scpnt, tm_flags, NULL);
++ zfcp_dbf_scsi_devreset("fiof", scpnt, tm_flags);
+ return ret;
+ }
+
+@@ -236,7 +236,7 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
+ }
+ }
+ if (!fsf_req) {
+- zfcp_dbf_scsi_devreset("reqf", scpnt, tm_flags, NULL);
++ zfcp_dbf_scsi_devreset("reqf", scpnt, tm_flags);
+ return FAILED;
+ }
+
+diff --git a/drivers/scsi/device_handler/scsi_dh_emc.c b/drivers/scsi/device_handler/scsi_dh_emc.c
+index 6ed1caadbc6a..78ff191e9427 100644
+--- a/drivers/scsi/device_handler/scsi_dh_emc.c
++++ b/drivers/scsi/device_handler/scsi_dh_emc.c
+@@ -464,7 +464,7 @@ static int clariion_prep_fn(struct scsi_device *sdev, struct request *req)
+ static int clariion_std_inquiry(struct scsi_device *sdev,
+ struct clariion_dh_data *csdev)
+ {
+- int err;
++ int err = SCSI_DH_OK;
+ char *sp_model;
+
+ err = send_inquiry_cmd(sdev, 0, csdev);
+diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
+index 67d43e35693d..b5a653aed5a4 100644
+--- a/drivers/scsi/scsi_transport_iscsi.c
++++ b/drivers/scsi/scsi_transport_iscsi.c
+@@ -3693,7 +3693,7 @@ iscsi_if_rx(struct sk_buff *skb)
+ uint32_t group;
+
+ nlh = nlmsg_hdr(skb);
+- if (nlh->nlmsg_len < sizeof(*nlh) ||
++ if (nlh->nlmsg_len < sizeof(*nlh) + sizeof(*ev) ||
+ skb->len < nlh->nlmsg_len) {
+ break;
+ }
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index fbdba7925723..102806a961da 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -842,7 +842,7 @@ sg_fill_request_table(Sg_fd *sfp, sg_req_info_t *rinfo)
+
+ val = 0;
+ list_for_each_entry(srp, &sfp->rq_list, entry) {
+- if (val > SG_MAX_QUEUE)
++ if (val >= SG_MAX_QUEUE)
+ break;
+ rinfo[val].req_state = srp->done + 1;
+ rinfo[val].problem =
+diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c
+index fe56fb6c7d30..2684b8adfa50 100644
+--- a/drivers/staging/iio/adc/ad7192.c
++++ b/drivers/staging/iio/adc/ad7192.c
+@@ -206,11 +206,9 @@ static int ad7192_setup(struct ad7192_state *st,
+ struct iio_dev *indio_dev = spi_get_drvdata(st->sd.spi);
+ unsigned long long scale_uv;
+ int i, ret, id;
+- u8 ones[6];
+
+ /* reset the serial interface */
+- memset(&ones, 0xFF, 6);
+- ret = spi_write(st->sd.spi, &ones, 6);
++ ret = ad_sd_reset(&st->sd, 48);
+ if (ret < 0)
+ goto out;
+ usleep_range(500, 1000); /* Wait for at least 500us */
+diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c
+index 959a14c9dd5d..10c81298eb0a 100644
+--- a/drivers/target/iscsi/iscsi_target_erl0.c
++++ b/drivers/target/iscsi/iscsi_target_erl0.c
+@@ -44,10 +44,8 @@ void iscsit_set_dataout_sequence_values(
+ */
+ if (cmd->unsolicited_data) {
+ cmd->seq_start_offset = cmd->write_data_done;
+- cmd->seq_end_offset = (cmd->write_data_done +
+- ((cmd->se_cmd.data_length >
+- conn->sess->sess_ops->FirstBurstLength) ?
+- conn->sess->sess_ops->FirstBurstLength : cmd->se_cmd.data_length));
++ cmd->seq_end_offset = min(cmd->se_cmd.data_length,
++ conn->sess->sess_ops->FirstBurstLength);
+ return;
+ }
+
+diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c
+index 0655fecf8240..ed7831b0f8b5 100644
+--- a/drivers/tty/goldfish.c
++++ b/drivers/tty/goldfish.c
+@@ -293,7 +293,7 @@ static int goldfish_tty_probe(struct platform_device *pdev)
+ return 0;
+
+ err_tty_register_device_failed:
+- free_irq(irq, pdev);
++ free_irq(irq, qtty);
+ err_request_irq_failed:
+ goldfish_tty_current_line_count--;
+ if (goldfish_tty_current_line_count == 0)
+diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
+index 534754440fa8..5d5f25600f04 100644
+--- a/drivers/tty/serial/sunhv.c
++++ b/drivers/tty/serial/sunhv.c
+@@ -397,6 +397,12 @@ static struct uart_driver sunhv_reg = {
+
+ static struct uart_port *sunhv_port;
+
++void sunhv_migrate_hvcons_irq(int cpu)
++{
++ /* Migrate hvcons irq to param cpu */
++ irq_force_affinity(sunhv_port->irq, cpumask_of(cpu));
++}
++
+ /* Copy 's' into the con_write_page, decoding "\n" into
+ * "\r\n" along the way. We have to return two lengths
+ * because the caller needs to know how much to advance
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index acab64245923..463d8a3375f5 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1774,6 +1774,9 @@ static const struct usb_device_id acm_ids[] = {
+ { USB_DEVICE(0xfff0, 0x0100), /* DATECS FP-2000 */
+ .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
+ },
++ { USB_DEVICE(0x09d8, 0x0320), /* Elatec GmbH TWN3 */
++ .driver_info = NO_UNION_NORMAL, /* has misplaced union descriptor */
++ },
+
+ { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
+ .driver_info = CLEAR_HALT_CONDITIONS,
+diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
+index 28085c240160..0b99f913d7f2 100644
+--- a/drivers/usb/core/config.c
++++ b/drivers/usb/core/config.c
+@@ -548,15 +548,23 @@ static int usb_parse_configuration(struct usb_device *dev, int cfgidx,
+
+ } else if (header->bDescriptorType ==
+ USB_DT_INTERFACE_ASSOCIATION) {
++ struct usb_interface_assoc_descriptor *d;
++
++ d = (struct usb_interface_assoc_descriptor *)header;
++ if (d->bLength < USB_DT_INTERFACE_ASSOCIATION_SIZE) {
++ dev_warn(ddev,
++ "config %d has an invalid interface association descriptor of length %d, skipping\n",
++ cfgno, d->bLength);
++ continue;
++ }
++
+ if (iad_num == USB_MAXIADS) {
+ dev_warn(ddev, "found more Interface "
+ "Association Descriptors "
+ "than allocated for in "
+ "configuration %d\n", cfgno);
+ } else {
+- config->intf_assoc[iad_num] =
+- (struct usb_interface_assoc_descriptor
+- *)header;
++ config->intf_assoc[iad_num] = d;
+ iad_num++;
+ }
+
+@@ -757,7 +765,7 @@ int usb_get_configuration(struct usb_device *dev)
+ }
+
+ if (dev->quirks & USB_QUIRK_DELAY_INIT)
+- msleep(100);
++ msleep(200);
+
+ result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno,
+ bigbuffer, length);
+@@ -857,10 +865,12 @@ int usb_get_bos_descriptor(struct usb_device *dev)
+ for (i = 0; i < num; i++) {
+ buffer += length;
+ cap = (struct usb_dev_cap_header *)buffer;
+- length = cap->bLength;
+
+- if (total_len < length)
++ if (total_len < sizeof(*cap) || total_len < cap->bLength) {
++ dev->bos->desc->bNumDeviceCaps = i;
+ break;
++ }
++ length = cap->bLength;
+ total_len -= length;
+
+ if (cap->bDescriptorType != USB_DT_DEVICE_CAPABILITY) {
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index fbf5c57b8251..8600144a7aab 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -2670,13 +2670,16 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
+ if (!(portstatus & USB_PORT_STAT_CONNECTION))
+ return -ENOTCONN;
+
+- /* bomb out completely if the connection bounced. A USB 3.0
+- * connection may bounce if multiple warm resets were issued,
++ /* Retry if connect change is set but status is still connected.
++ * A USB 3.0 connection may bounce if multiple warm resets were issued,
+ * but the device may have successfully re-connected. Ignore it.
+ */
+ if (!hub_is_superspeed(hub->hdev) &&
+- (portchange & USB_PORT_STAT_C_CONNECTION))
+- return -ENOTCONN;
++ (portchange & USB_PORT_STAT_C_CONNECTION)) {
++ usb_clear_port_feature(hub->hdev, port1,
++ USB_PORT_FEAT_C_CONNECTION);
++ return -EAGAIN;
++ }
+
+ if (!(portstatus & USB_PORT_STAT_ENABLE))
+ return -EBUSY;
+@@ -4718,7 +4721,7 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
+ goto loop;
+
+ if (udev->quirks & USB_QUIRK_DELAY_INIT)
+- msleep(1000);
++ msleep(2000);
+
+ /* consecutive bus-powered hubs aren't reliable; they can
+ * violate the voltage drop budget. if the new child has
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 82806e311202..a6aaf2f193a4 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -221,6 +221,10 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* Corsair Strafe RGB */
+ { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT },
+
++ /* MIDI keyboard WORLDE MINI */
++ { USB_DEVICE(0x1c75, 0x0204), .driver_info =
++ USB_QUIRK_CONFIG_INTF_STRINGS },
++
+ /* Acer C120 LED Projector */
+ { USB_DEVICE(0x1de1, 0xc102), .driver_info = USB_QUIRK_NO_LPM },
+
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index d17304ae0b42..a01d90fe37d9 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -1867,6 +1867,8 @@ static DEVICE_ATTR_RO(suspended);
+ static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver)
+ {
+ struct usb_composite_dev *cdev = get_gadget_data(gadget);
++ struct usb_gadget_strings *gstr = cdev->driver->strings[0];
++ struct usb_string *dev_str = gstr->strings;
+
+ /* composite_disconnect() must already have been called
+ * by the underlying peripheral controller driver!
+@@ -1886,6 +1888,9 @@ static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver)
+
+ composite_dev_cleanup(cdev);
+
++ if (dev_str[USB_GADGET_MANUFACTURER_IDX].s == cdev->def_manufacturer)
++ dev_str[USB_GADGET_MANUFACTURER_IDX].s = "";
++
+ kfree(cdev->def_manufacturer);
+ kfree(cdev);
+ set_gadget_data(gadget, NULL);
+diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
+index 11f183c7d348..335137d4e892 100644
+--- a/drivers/usb/gadget/function/f_mass_storage.c
++++ b/drivers/usb/gadget/function/f_mass_storage.c
+@@ -306,8 +306,6 @@ struct fsg_common {
+ struct completion thread_notifier;
+ struct task_struct *thread_task;
+
+- /* Callback functions. */
+- const struct fsg_operations *ops;
+ /* Gadget's private data. */
+ void *private_data;
+
+@@ -2508,6 +2506,7 @@ static void handle_exception(struct fsg_common *common)
+ static int fsg_main_thread(void *common_)
+ {
+ struct fsg_common *common = common_;
++ int i;
+
+ /*
+ * Allow the thread to be killed by a signal, but set the signal mask
+@@ -2569,21 +2568,16 @@ static int fsg_main_thread(void *common_)
+ common->thread_task = NULL;
+ spin_unlock_irq(&common->lock);
+
+- if (!common->ops || !common->ops->thread_exits
+- || common->ops->thread_exits(common) < 0) {
+- int i;
++ /* Eject media from all LUNs */
+
+- down_write(&common->filesem);
+- for (i = 0; i < ARRAY_SIZE(common->luns); --i) {
+- struct fsg_lun *curlun = common->luns[i];
+- if (!curlun || !fsg_lun_is_open(curlun))
+- continue;
++ down_write(&common->filesem);
++ for (i = 0; i < ARRAY_SIZE(common->luns); i++) {
++ struct fsg_lun *curlun = common->luns[i];
+
++ if (curlun && fsg_lun_is_open(curlun))
+ fsg_lun_close(curlun);
+- curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT;
+- }
+- up_write(&common->filesem);
+ }
++ up_write(&common->filesem);
+
+ /* Let fsg_unbind() know the thread has exited */
+ complete_and_exit(&common->thread_notifier, 0);
+@@ -2787,13 +2781,6 @@ void fsg_common_remove_luns(struct fsg_common *common)
+ _fsg_common_remove_luns(common, ARRAY_SIZE(common->luns));
+ }
+
+-void fsg_common_set_ops(struct fsg_common *common,
+- const struct fsg_operations *ops)
+-{
+- common->ops = ops;
+-}
+-EXPORT_SYMBOL_GPL(fsg_common_set_ops);
+-
+ void fsg_common_free_buffers(struct fsg_common *common)
+ {
+ _fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers);
+diff --git a/drivers/usb/gadget/function/f_mass_storage.h b/drivers/usb/gadget/function/f_mass_storage.h
+index b6a9918eaefb..dfa2176f43c2 100644
+--- a/drivers/usb/gadget/function/f_mass_storage.h
++++ b/drivers/usb/gadget/function/f_mass_storage.h
+@@ -60,17 +60,6 @@ struct fsg_module_parameters {
+ struct fsg_common;
+
+ /* FSF callback functions */
+-struct fsg_operations {
+- /*
+- * Callback function to call when thread exits. If no
+- * callback is set or it returns value lower then zero MSF
+- * will force eject all LUNs it operates on (including those
+- * marked as non-removable or with prevent_medium_removal flag
+- * set).
+- */
+- int (*thread_exits)(struct fsg_common *common);
+-};
+-
+ struct fsg_lun_opts {
+ struct config_group group;
+ struct fsg_lun *lun;
+@@ -141,9 +130,6 @@ void fsg_common_remove_lun(struct fsg_lun *lun);
+
+ void fsg_common_remove_luns(struct fsg_common *common);
+
+-void fsg_common_set_ops(struct fsg_common *common,
+- const struct fsg_operations *ops);
+-
+ int fsg_common_create_lun(struct fsg_common *common, struct fsg_lun_config *cfg,
+ unsigned int id, const char *name,
+ const char **name_pfx);
+diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
+index a60f4c9ea292..63d71400dcaf 100644
+--- a/drivers/usb/gadget/legacy/inode.c
++++ b/drivers/usb/gadget/legacy/inode.c
+@@ -27,7 +27,7 @@
+ #include <linux/mmu_context.h>
+ #include <linux/aio.h>
+ #include <linux/uio.h>
+-
++#include <linux/delay.h>
+ #include <linux/device.h>
+ #include <linux/moduleparam.h>
+
+@@ -116,6 +116,7 @@ enum ep0_state {
+ struct dev_data {
+ spinlock_t lock;
+ atomic_t count;
++ int udc_usage;
+ enum ep0_state state; /* P: lock */
+ struct usb_gadgetfs_event event [N_EVENT];
+ unsigned ev_next;
+@@ -512,9 +513,9 @@ static void ep_aio_complete(struct usb_ep *ep, struct usb_request *req)
+ INIT_WORK(&priv->work, ep_user_copy_worker);
+ schedule_work(&priv->work);
+ }
+- spin_unlock(&epdata->dev->lock);
+
+ usb_ep_free_request(ep, req);
++ spin_unlock(&epdata->dev->lock);
+ put_ep(epdata);
+ }
+
+@@ -935,9 +936,11 @@ ep0_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr)
+ struct usb_request *req = dev->req;
+
+ if ((retval = setup_req (ep, req, 0)) == 0) {
++ ++dev->udc_usage;
+ spin_unlock_irq (&dev->lock);
+ retval = usb_ep_queue (ep, req, GFP_KERNEL);
+ spin_lock_irq (&dev->lock);
++ --dev->udc_usage;
+ }
+ dev->state = STATE_DEV_CONNECTED;
+
+@@ -979,11 +982,14 @@ ep0_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr)
+ retval = -EIO;
+ else {
+ len = min (len, (size_t)dev->req->actual);
+-// FIXME don't call this with the spinlock held ...
++ ++dev->udc_usage;
++ spin_unlock_irq(&dev->lock);
+ if (copy_to_user (buf, dev->req->buf, len))
+ retval = -EFAULT;
+ else
+ retval = len;
++ spin_lock_irq(&dev->lock);
++ --dev->udc_usage;
+ clean_req (dev->gadget->ep0, dev->req);
+ /* NOTE userspace can't yet choose to stall */
+ }
+@@ -1127,6 +1133,7 @@ ep0_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
+ retval = setup_req (dev->gadget->ep0, dev->req, len);
+ if (retval == 0) {
+ dev->state = STATE_DEV_CONNECTED;
++ ++dev->udc_usage;
+ spin_unlock_irq (&dev->lock);
+ if (copy_from_user (dev->req->buf, buf, len))
+ retval = -EFAULT;
+@@ -1137,10 +1144,10 @@ ep0_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
+ dev->gadget->ep0, dev->req,
+ GFP_KERNEL);
+ }
++ spin_lock_irq(&dev->lock);
++ --dev->udc_usage;
+ if (retval < 0) {
+- spin_lock_irq (&dev->lock);
+ clean_req (dev->gadget->ep0, dev->req);
+- spin_unlock_irq (&dev->lock);
+ } else
+ retval = len;
+
+@@ -1237,9 +1244,21 @@ static long dev_ioctl (struct file *fd, unsigned code, unsigned long value)
+ struct usb_gadget *gadget = dev->gadget;
+ long ret = -ENOTTY;
+
+- if (gadget->ops->ioctl)
++ spin_lock_irq(&dev->lock);
++ if (dev->state == STATE_DEV_OPENED ||
++ dev->state == STATE_DEV_UNBOUND) {
++ /* Not bound to a UDC */
++ } else if (gadget->ops->ioctl) {
++ ++dev->udc_usage;
++ spin_unlock_irq(&dev->lock);
++
+ ret = gadget->ops->ioctl (gadget, code, value);
+
++ spin_lock_irq(&dev->lock);
++ --dev->udc_usage;
++ }
++ spin_unlock_irq(&dev->lock);
++
+ return ret;
+ }
+
+@@ -1457,10 +1476,12 @@ delegate:
+ if (value < 0)
+ break;
+
++ ++dev->udc_usage;
+ spin_unlock (&dev->lock);
+ value = usb_ep_queue (gadget->ep0, dev->req,
+ GFP_KERNEL);
+ spin_lock (&dev->lock);
++ --dev->udc_usage;
+ if (value < 0) {
+ clean_req (gadget->ep0, dev->req);
+ break;
+@@ -1484,8 +1505,12 @@ delegate:
+ req->length = value;
+ req->zero = value < w_length;
+
++ ++dev->udc_usage;
+ spin_unlock (&dev->lock);
+ value = usb_ep_queue (gadget->ep0, req, GFP_KERNEL);
++ spin_lock(&dev->lock);
++ --dev->udc_usage;
++ spin_unlock(&dev->lock);
+ if (value < 0) {
+ DBG (dev, "ep_queue --> %d\n", value);
+ req->status = 0;
+@@ -1512,21 +1537,24 @@ static void destroy_ep_files (struct dev_data *dev)
+ /* break link to FS */
+ ep = list_first_entry (&dev->epfiles, struct ep_data, epfiles);
+ list_del_init (&ep->epfiles);
++ spin_unlock_irq (&dev->lock);
++
+ dentry = ep->dentry;
+ ep->dentry = NULL;
+ parent = d_inode(dentry->d_parent);
+
+ /* break link to controller */
++ mutex_lock(&ep->lock);
+ if (ep->state == STATE_EP_ENABLED)
+ (void) usb_ep_disable (ep->ep);
+ ep->state = STATE_EP_UNBOUND;
+ usb_ep_free_request (ep->ep, ep->req);
+ ep->ep = NULL;
++ mutex_unlock(&ep->lock);
++
+ wake_up (&ep->wait);
+ put_ep (ep);
+
+- spin_unlock_irq (&dev->lock);
+-
+ /* break link to dcache */
+ mutex_lock (&parent->i_mutex);
+ d_delete (dentry);
+@@ -1597,6 +1625,11 @@ gadgetfs_unbind (struct usb_gadget *gadget)
+
+ spin_lock_irq (&dev->lock);
+ dev->state = STATE_DEV_UNBOUND;
++ while (dev->udc_usage > 0) {
++ spin_unlock_irq(&dev->lock);
++ usleep_range(1000, 2000);
++ spin_lock_irq(&dev->lock);
++ }
+ spin_unlock_irq (&dev->lock);
+
+ destroy_ep_files (dev);
+diff --git a/drivers/usb/gadget/legacy/mass_storage.c b/drivers/usb/gadget/legacy/mass_storage.c
+index 3eb1b9fad5a0..f1347d4492d1 100644
+--- a/drivers/usb/gadget/legacy/mass_storage.c
++++ b/drivers/usb/gadget/legacy/mass_storage.c
+@@ -121,15 +121,6 @@ static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
+
+ FSG_MODULE_PARAMETERS(/* no prefix */, mod_data);
+
+-static unsigned long msg_registered;
+-static void msg_cleanup(void);
+-
+-static int msg_thread_exits(struct fsg_common *common)
+-{
+- msg_cleanup();
+- return 0;
+-}
+-
+ static int msg_do_config(struct usb_configuration *c)
+ {
+ struct fsg_opts *opts;
+@@ -168,9 +159,6 @@ static struct usb_configuration msg_config_driver = {
+
+ static int msg_bind(struct usb_composite_dev *cdev)
+ {
+- static const struct fsg_operations ops = {
+- .thread_exits = msg_thread_exits,
+- };
+ struct fsg_opts *opts;
+ struct fsg_config config;
+ int status;
+@@ -187,8 +175,6 @@ static int msg_bind(struct usb_composite_dev *cdev)
+ if (status)
+ goto fail;
+
+- fsg_common_set_ops(opts->common, &ops);
+-
+ status = fsg_common_set_cdev(opts->common, cdev, config.can_stall);
+ if (status)
+ goto fail_set_cdev;
+@@ -213,7 +199,6 @@ static int msg_bind(struct usb_composite_dev *cdev)
+ usb_composite_overwrite_options(cdev, &coverwrite);
+ dev_info(&cdev->gadget->dev,
+ DRIVER_DESC ", version: " DRIVER_VERSION "\n");
+- set_bit(0, &msg_registered);
+ return 0;
+
+ fail_string_ids:
+@@ -258,9 +243,8 @@ static int __init msg_init(void)
+ }
+ module_init(msg_init);
+
+-static void msg_cleanup(void)
++static void __exit msg_cleanup(void)
+ {
+- if (test_and_clear_bit(0, &msg_registered))
+- usb_composite_unregister(&msg_driver);
++ usb_composite_unregister(&msg_driver);
+ }
+ module_exit(msg_cleanup);
+diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
+index 09e6ff835e1c..35f730324b63 100644
+--- a/drivers/usb/gadget/udc/dummy_hcd.c
++++ b/drivers/usb/gadget/udc/dummy_hcd.c
+@@ -173,6 +173,8 @@ struct dummy_hcd {
+
+ struct usb_device *udev;
+ struct list_head urbp_list;
++ struct urbp *next_frame_urbp;
++
+ u32 stream_en_ep;
+ u8 num_stream[30 / 2];
+
+@@ -189,11 +191,13 @@ struct dummy {
+ */
+ struct dummy_ep ep[DUMMY_ENDPOINTS];
+ int address;
++ int callback_usage;
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *driver;
+ struct dummy_request fifo_req;
+ u8 fifo_buf[FIFO_SIZE];
+ u16 devstatus;
++ unsigned ints_enabled:1;
+ unsigned udc_suspended:1;
+ unsigned pullup:1;
+
+@@ -352,6 +356,7 @@ static void set_link_state_by_speed(struct dummy_hcd *dum_hcd)
+ static void set_link_state(struct dummy_hcd *dum_hcd)
+ {
+ struct dummy *dum = dum_hcd->dum;
++ unsigned int power_bit;
+
+ dum_hcd->active = 0;
+ if (dum->pullup)
+@@ -362,32 +367,43 @@ static void set_link_state(struct dummy_hcd *dum_hcd)
+ return;
+
+ set_link_state_by_speed(dum_hcd);
++ power_bit = (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 ?
++ USB_SS_PORT_STAT_POWER : USB_PORT_STAT_POWER);
+
+ if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 ||
+ dum_hcd->active)
+ dum_hcd->resuming = 0;
+
+ /* Currently !connected or in reset */
+- if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 ||
++ if ((dum_hcd->port_status & power_bit) == 0 ||
+ (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) {
+- unsigned disconnect = USB_PORT_STAT_CONNECTION &
++ unsigned int disconnect = power_bit &
+ dum_hcd->old_status & (~dum_hcd->port_status);
+- unsigned reset = USB_PORT_STAT_RESET &
++ unsigned int reset = USB_PORT_STAT_RESET &
+ (~dum_hcd->old_status) & dum_hcd->port_status;
+
+ /* Report reset and disconnect events to the driver */
+- if (dum->driver && (disconnect || reset)) {
++ if (dum->ints_enabled && (disconnect || reset)) {
+ stop_activity(dum);
++ ++dum->callback_usage;
++ spin_unlock(&dum->lock);
+ if (reset)
+ usb_gadget_udc_reset(&dum->gadget, dum->driver);
+ else
+ dum->driver->disconnect(&dum->gadget);
++ spin_lock(&dum->lock);
++ --dum->callback_usage;
+ }
+- } else if (dum_hcd->active != dum_hcd->old_active) {
++ } else if (dum_hcd->active != dum_hcd->old_active &&
++ dum->ints_enabled) {
++ ++dum->callback_usage;
++ spin_unlock(&dum->lock);
+ if (dum_hcd->old_active && dum->driver->suspend)
+ dum->driver->suspend(&dum->gadget);
+ else if (!dum_hcd->old_active && dum->driver->resume)
+ dum->driver->resume(&dum->gadget);
++ spin_lock(&dum->lock);
++ --dum->callback_usage;
+ }
+
+ dum_hcd->old_status = dum_hcd->port_status;
+@@ -903,8 +919,11 @@ static int dummy_udc_start(struct usb_gadget *g,
+ * can't enumerate without help from the driver we're binding.
+ */
+
++ spin_lock_irq(&dum->lock);
+ dum->devstatus = 0;
+ dum->driver = driver;
++ dum->ints_enabled = 1;
++ spin_unlock_irq(&dum->lock);
+
+ return 0;
+ }
+@@ -915,6 +934,16 @@ static int dummy_udc_stop(struct usb_gadget *g)
+ struct dummy *dum = dum_hcd->dum;
+
+ spin_lock_irq(&dum->lock);
++ dum->ints_enabled = 0;
++ stop_activity(dum);
++
++ /* emulate synchronize_irq(): wait for callbacks to finish */
++ while (dum->callback_usage > 0) {
++ spin_unlock_irq(&dum->lock);
++ usleep_range(1000, 2000);
++ spin_lock_irq(&dum->lock);
++ }
++
+ dum->driver = NULL;
+ spin_unlock_irq(&dum->lock);
+
+@@ -967,7 +996,12 @@ static int dummy_udc_probe(struct platform_device *pdev)
+ memzero_explicit(&dum->gadget, sizeof(struct usb_gadget));
+ dum->gadget.name = gadget_name;
+ dum->gadget.ops = &dummy_ops;
+- dum->gadget.max_speed = USB_SPEED_SUPER;
++ if (mod_data.is_super_speed)
++ dum->gadget.max_speed = USB_SPEED_SUPER;
++ else if (mod_data.is_high_speed)
++ dum->gadget.max_speed = USB_SPEED_HIGH;
++ else
++ dum->gadget.max_speed = USB_SPEED_FULL;
+
+ dum->gadget.dev.parent = &pdev->dev;
+ init_dummy_udc_hw(dum);
+@@ -1176,6 +1210,8 @@ static int dummy_urb_enqueue(
+
+ list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list);
+ urb->hcpriv = urbp;
++ if (!dum_hcd->next_frame_urbp)
++ dum_hcd->next_frame_urbp = urbp;
+ if (usb_pipetype(urb->pipe) == PIPE_CONTROL)
+ urb->error_count = 1; /* mark as a new urb */
+
+@@ -1438,6 +1474,8 @@ static struct dummy_ep *find_endpoint(struct dummy *dum, u8 address)
+ if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ?
+ dum->ss_hcd : dum->hs_hcd)))
+ return NULL;
++ if (!dum->ints_enabled)
++ return NULL;
+ if ((address & ~USB_DIR_IN) == 0)
+ return &dum->ep[0];
+ for (i = 1; i < DUMMY_ENDPOINTS; i++) {
+@@ -1679,6 +1717,7 @@ static void dummy_timer(unsigned long _dum_hcd)
+ spin_unlock_irqrestore(&dum->lock, flags);
+ return;
+ }
++ dum_hcd->next_frame_urbp = NULL;
+
+ for (i = 0; i < DUMMY_ENDPOINTS; i++) {
+ if (!ep_name[i])
+@@ -1695,6 +1734,10 @@ restart:
+ int type;
+ int status = -EINPROGRESS;
+
++ /* stop when we reach URBs queued after the timer interrupt */
++ if (urbp == dum_hcd->next_frame_urbp)
++ break;
++
+ urb = urbp->urb;
+ if (urb->unlinked)
+ goto return_urb;
+@@ -1774,10 +1817,12 @@ restart:
+ * until setup() returns; no reentrancy issues etc.
+ */
+ if (value > 0) {
++ ++dum->callback_usage;
+ spin_unlock(&dum->lock);
+ value = dum->driver->setup(&dum->gadget,
+ &setup);
+ spin_lock(&dum->lock);
++ --dum->callback_usage;
+
+ if (value >= 0) {
+ /* no delays (max 64KB data stage) */
+@@ -2485,8 +2530,6 @@ static struct hc_driver dummy_hcd = {
+ .product_desc = "Dummy host controller",
+ .hcd_priv_size = sizeof(struct dummy_hcd),
+
+- .flags = HCD_USB3 | HCD_SHARED,
+-
+ .reset = dummy_setup,
+ .start = dummy_start,
+ .stop = dummy_stop,
+@@ -2515,8 +2558,12 @@ static int dummy_hcd_probe(struct platform_device *pdev)
+ dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc);
+ dum = *((void **)dev_get_platdata(&pdev->dev));
+
+- if (!mod_data.is_super_speed)
++ if (mod_data.is_super_speed)
++ dummy_hcd.flags = HCD_USB3 | HCD_SHARED;
++ else if (mod_data.is_high_speed)
+ dummy_hcd.flags = HCD_USB2;
++ else
++ dummy_hcd.flags = HCD_USB11;
+ hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev));
+ if (!hs_hcd)
+ return -ENOMEM;
+diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
+index 1fc6f478a02c..89e9494c3245 100644
+--- a/drivers/usb/host/pci-quirks.c
++++ b/drivers/usb/host/pci-quirks.c
+@@ -969,7 +969,7 @@ EXPORT_SYMBOL_GPL(usb_disable_xhci_ports);
+ *
+ * Takes care of the handoff between the Pre-OS (i.e. BIOS) and the OS.
+ * It signals to the BIOS that the OS wants control of the host controller,
+- * and then waits 5 seconds for the BIOS to hand over control.
++ * and then waits 1 second for the BIOS to hand over control.
+ * If we timeout, assume the BIOS is broken and take control anyway.
+ */
+ static void quirk_usb_handoff_xhci(struct pci_dev *pdev)
+@@ -1015,9 +1015,9 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev)
+ if (val & XHCI_HC_BIOS_OWNED) {
+ writel(val | XHCI_HC_OS_OWNED, base + ext_cap_offset);
+
+- /* Wait for 5 seconds with 10 microsecond polling interval */
++ /* Wait for 1 second with 10 microsecond polling interval */
+ timeout = handshake(base + ext_cap_offset, XHCI_HC_BIOS_OWNED,
+- 0, 5000, 10);
++ 0, 1000000, 10);
+
+ /* Assume a buggy BIOS and take HC ownership anyway */
+ if (timeout) {
+@@ -1046,7 +1046,7 @@ hc_init:
+ * operational or runtime registers. Wait 5 seconds and no more.
+ */
+ timeout = handshake(op_reg_base + XHCI_STS_OFFSET, XHCI_STS_CNR, 0,
+- 5000, 10);
++ 5000000, 10);
+ /* Assume a buggy HC and start HC initialization anyway */
+ if (timeout) {
+ val = readl(op_reg_base + XHCI_STS_OFFSET);
+diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
+index 25b1cf0b6848..064bdf78286d 100644
+--- a/drivers/usb/host/xhci-hub.c
++++ b/drivers/usb/host/xhci-hub.c
+@@ -293,15 +293,25 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend)
+ GFP_NOWAIT);
+ if (!command) {
+ spin_unlock_irqrestore(&xhci->lock, flags);
+- xhci_free_command(xhci, cmd);
+- return -ENOMEM;
++ ret = -ENOMEM;
++ goto cmd_cleanup;
++ }
+
++ ret = xhci_queue_stop_endpoint(xhci, command, slot_id,
++ i, suspend);
++ if (ret) {
++ spin_unlock_irqrestore(&xhci->lock, flags);
++ xhci_free_command(xhci, command);
++ goto cmd_cleanup;
+ }
+- xhci_queue_stop_endpoint(xhci, command, slot_id, i,
+- suspend);
+ }
+ }
+- xhci_queue_stop_endpoint(xhci, cmd, slot_id, 0, suspend);
++ ret = xhci_queue_stop_endpoint(xhci, cmd, slot_id, 0, suspend);
++ if (ret) {
++ spin_unlock_irqrestore(&xhci->lock, flags);
++ goto cmd_cleanup;
++ }
++
+ xhci_ring_cmd_db(xhci);
+ spin_unlock_irqrestore(&xhci->lock, flags);
+
+@@ -312,6 +322,8 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend)
+ xhci_warn(xhci, "Timeout while waiting for stop endpoint command\n");
+ ret = -ETIME;
+ }
++
++cmd_cleanup:
+ xhci_free_command(xhci, cmd);
+ return ret;
+ }
+diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
+index f33028642e31..566ba291e1be 100644
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1439,7 +1439,7 @@ struct xhci_bus_state {
+
+ static inline unsigned int hcd_index(struct usb_hcd *hcd)
+ {
+- if (hcd->speed == HCD_USB3)
++ if (hcd->speed >= HCD_USB3)
+ return 0;
+ else
+ return 1;
+diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
+index 9f65d8477372..3ecc79644b7a 100644
+--- a/drivers/usb/musb/musb_core.c
++++ b/drivers/usb/musb/musb_core.c
+@@ -863,7 +863,7 @@ b_host:
+ */
+ if (int_usb & MUSB_INTR_RESET) {
+ handled = IRQ_HANDLED;
+- if (devctl & MUSB_DEVCTL_HM) {
++ if (is_host_active(musb)) {
+ /*
+ * When BABBLE happens what we can depends on which
+ * platform MUSB is running, because some platforms
+@@ -873,9 +873,7 @@ b_host:
+ * drop the session.
+ */
+ dev_err(musb->controller, "Babble\n");
+-
+- if (is_host_active(musb))
+- musb_recover_from_babble(musb);
++ musb_recover_from_babble(musb);
+ } else {
+ dev_dbg(musb->controller, "BUS RESET as %s\n",
+ usb_otg_state_string(musb->xceiv->otg->state));
+diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
+index 36e5b5c530bd..8bb9367ada45 100644
+--- a/drivers/usb/renesas_usbhs/fifo.c
++++ b/drivers/usb/renesas_usbhs/fifo.c
+@@ -285,11 +285,26 @@ static void usbhsf_fifo_clear(struct usbhs_pipe *pipe,
+ struct usbhs_fifo *fifo)
+ {
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
++ int ret = 0;
+
+- if (!usbhs_pipe_is_dcp(pipe))
+- usbhsf_fifo_barrier(priv, fifo);
++ if (!usbhs_pipe_is_dcp(pipe)) {
++ /*
++ * This driver checks the pipe condition first to avoid -EBUSY
++ * from usbhsf_fifo_barrier() with about 10 msec delay in
++ * the interrupt handler if the pipe is RX direction and empty.
++ */
++ if (usbhs_pipe_is_dir_in(pipe))
++ ret = usbhs_pipe_is_accessible(pipe);
++ if (!ret)
++ ret = usbhsf_fifo_barrier(priv, fifo);
++ }
+
+- usbhs_write(priv, fifo->ctr, BCLR);
++ /*
++ * if non-DCP pipe, this driver should set BCLR when
++ * usbhsf_fifo_barrier() returns 0.
++ */
++ if (!ret)
++ usbhs_write(priv, fifo->ctr, BCLR);
+ }
+
+ static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv,
+@@ -843,9 +858,9 @@ static void xfer_work(struct work_struct *work)
+ fifo->name, usbhs_pipe_number(pipe), pkt->length, pkt->zero);
+
+ usbhs_pipe_running(pipe, 1);
+- usbhsf_dma_start(pipe, fifo);
+ usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->trans);
+ dma_async_issue_pending(chan);
++ usbhsf_dma_start(pipe, fifo);
+ usbhs_pipe_enable(pipe);
+
+ xfer_work_end:
+diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
+index 3806e7014199..2938153fe7b1 100644
+--- a/drivers/usb/serial/console.c
++++ b/drivers/usb/serial/console.c
+@@ -189,6 +189,7 @@ static int usb_console_setup(struct console *co, char *options)
+ tty_kref_put(tty);
+ reset_open_count:
+ port->port.count = 0;
++ info->port = NULL;
+ usb_autopm_put_interface(serial->interface);
+ error_get_interface:
+ usb_serial_put(serial);
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index 31cd99f59a6a..b1be08570088 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -168,6 +168,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */
+ { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
+ { USB_DEVICE(0x18EF, 0xE025) }, /* ELV Marble Sound Board 1 */
++ { USB_DEVICE(0x18EF, 0xE032) }, /* ELV TFD500 Data Logger */
+ { USB_DEVICE(0x1901, 0x0190) }, /* GE B850 CP2105 Recorder interface */
+ { USB_DEVICE(0x1901, 0x0193) }, /* GE B650 CP2104 PMC interface */
+ { USB_DEVICE(0x1901, 0x0194) }, /* GE Healthcare Remote Alarm Box */
+diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c
+index 39e683096e94..45182c65fa1f 100644
+--- a/drivers/usb/serial/metro-usb.c
++++ b/drivers/usb/serial/metro-usb.c
+@@ -45,6 +45,7 @@ struct metrousb_private {
+ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(FOCUS_VENDOR_ID, FOCUS_PRODUCT_ID_BI) },
+ { USB_DEVICE(FOCUS_VENDOR_ID, FOCUS_PRODUCT_ID_UNI) },
++ { USB_DEVICE_INTERFACE_CLASS(0x0c2e, 0x0730, 0xff) }, /* MS7820 */
+ { }, /* Terminating entry. */
+ };
+ MODULE_DEVICE_TABLE(usb, id_table);
+diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
+index 3c0552df5e37..02f189e2bda7 100644
+--- a/drivers/usb/serial/mos7720.c
++++ b/drivers/usb/serial/mos7720.c
+@@ -234,11 +234,16 @@ static int read_mos_reg(struct usb_serial *serial, unsigned int serial_portnum,
+
+ status = usb_control_msg(usbdev, pipe, request, requesttype, value,
+ index, buf, 1, MOS_WDR_TIMEOUT);
+- if (status == 1)
++ if (status == 1) {
+ *data = *buf;
+- else if (status < 0)
++ } else {
+ dev_err(&usbdev->dev,
+ "mos7720: usb_control_msg() failed: %d\n", status);
++ if (status >= 0)
++ status = -EIO;
++ *data = 0;
++ }
++
+ kfree(buf);
+
+ return status;
+diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
+index 03813d86a847..f16211a32922 100644
+--- a/drivers/usb/serial/mos7840.c
++++ b/drivers/usb/serial/mos7840.c
+@@ -285,9 +285,15 @@ static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg,
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
+ MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH,
+ MOS_WDR_TIMEOUT);
++ if (ret < VENDOR_READ_LENGTH) {
++ if (ret >= 0)
++ ret = -EIO;
++ goto out;
++ }
++
+ *val = buf[0];
+ dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val);
+-
++out:
+ kfree(buf);
+ return ret;
+ }
+@@ -353,8 +359,13 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg,
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
+ MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH,
+ MOS_WDR_TIMEOUT);
++ if (ret < VENDOR_READ_LENGTH) {
++ if (ret >= 0)
++ ret = -EIO;
++ goto out;
++ }
+ *val = buf[0];
+-
++out:
+ kfree(buf);
+ return ret;
+ }
+@@ -1490,10 +1501,10 @@ static int mos7840_tiocmget(struct tty_struct *tty)
+ return -ENODEV;
+
+ status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr);
+- if (status != 1)
++ if (status < 0)
+ return -EIO;
+ status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr);
+- if (status != 1)
++ if (status < 0)
+ return -EIO;
+ result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
+ | ((mcr & MCR_RTS) ? TIOCM_RTS : 0)
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index a0fbc4e5a272..dc489fb4261b 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -517,6 +517,7 @@ static void option_instat_callback(struct urb *urb);
+
+ /* TP-LINK Incorporated products */
+ #define TPLINK_VENDOR_ID 0x2357
++#define TPLINK_PRODUCT_LTE 0x000D
+ #define TPLINK_PRODUCT_MA180 0x0201
+
+ /* Changhong products */
+@@ -2008,6 +2009,7 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(CELLIENT_VENDOR_ID, CELLIENT_PRODUCT_MEN200) },
+ { USB_DEVICE(PETATEL_VENDOR_ID, PETATEL_PRODUCT_NP10T_600A) },
+ { USB_DEVICE(PETATEL_VENDOR_ID, PETATEL_PRODUCT_NP10T_600E) },
++ { USB_DEVICE_AND_INTERFACE_INFO(TPLINK_VENDOR_ID, TPLINK_PRODUCT_LTE, 0xff, 0x00, 0x00) }, /* TP-Link LTE Module */
+ { USB_DEVICE(TPLINK_VENDOR_ID, TPLINK_PRODUCT_MA180),
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE(TPLINK_VENDOR_ID, 0x9000), /* TP-Link MA260 */
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index 23c303b2a3a2..996dc09b00b8 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -172,6 +172,10 @@ static const struct usb_device_id id_table[] = {
+ {DEVICE_SWI(0x413c, 0x81b3)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
+ {DEVICE_SWI(0x413c, 0x81b5)}, /* Dell Wireless 5811e QDL */
+ {DEVICE_SWI(0x413c, 0x81b6)}, /* Dell Wireless 5811e QDL */
++ {DEVICE_SWI(0x413c, 0x81cf)}, /* Dell Wireless 5819 */
++ {DEVICE_SWI(0x413c, 0x81d0)}, /* Dell Wireless 5819 */
++ {DEVICE_SWI(0x413c, 0x81d1)}, /* Dell Wireless 5818 */
++ {DEVICE_SWI(0x413c, 0x81d2)}, /* Dell Wireless 5818 */
+
+ /* Huawei devices */
+ {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
+diff --git a/drivers/usb/storage/uas-detect.h b/drivers/usb/storage/uas-detect.h
+index f58caa9e6a27..a155cd02bce2 100644
+--- a/drivers/usb/storage/uas-detect.h
++++ b/drivers/usb/storage/uas-detect.h
+@@ -9,7 +9,8 @@ static int uas_is_interface(struct usb_host_interface *intf)
+ intf->desc.bInterfaceProtocol == USB_PR_UAS);
+ }
+
+-static int uas_find_uas_alt_setting(struct usb_interface *intf)
++static struct usb_host_interface *uas_find_uas_alt_setting(
++ struct usb_interface *intf)
+ {
+ int i;
+
+@@ -17,10 +18,10 @@ static int uas_find_uas_alt_setting(struct usb_interface *intf)
+ struct usb_host_interface *alt = &intf->altsetting[i];
+
+ if (uas_is_interface(alt))
+- return alt->desc.bAlternateSetting;
++ return alt;
+ }
+
+- return -ENODEV;
++ return NULL;
+ }
+
+ static int uas_find_endpoints(struct usb_host_interface *alt,
+@@ -58,14 +59,14 @@ static int uas_use_uas_driver(struct usb_interface *intf,
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+ unsigned long flags = id->driver_info;
+- int r, alt;
+-
++ struct usb_host_interface *alt;
++ int r;
+
+ alt = uas_find_uas_alt_setting(intf);
+- if (alt < 0)
++ if (!alt)
+ return 0;
+
+- r = uas_find_endpoints(&intf->altsetting[alt], eps);
++ r = uas_find_endpoints(alt, eps);
+ if (r < 0)
+ return 0;
+
+diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
+index 546bb2b1ffc2..f58ae4a84c11 100644
+--- a/drivers/usb/storage/uas.c
++++ b/drivers/usb/storage/uas.c
+@@ -851,14 +851,14 @@ MODULE_DEVICE_TABLE(usb, uas_usb_ids);
+ static int uas_switch_interface(struct usb_device *udev,
+ struct usb_interface *intf)
+ {
+- int alt;
++ struct usb_host_interface *alt;
+
+ alt = uas_find_uas_alt_setting(intf);
+- if (alt < 0)
+- return alt;
++ if (!alt)
++ return -ENODEV;
+
+- return usb_set_interface(udev,
+- intf->altsetting[0].desc.bInterfaceNumber, alt);
++ return usb_set_interface(udev, alt->desc.bInterfaceNumber,
++ alt->desc.bAlternateSetting);
+ }
+
+ static int uas_configure_endpoints(struct uas_dev_info *devinfo)
+diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
+index 2f40b6150fdc..8e80da125b25 100644
+--- a/drivers/usb/storage/unusual_devs.h
++++ b/drivers/usb/storage/unusual_devs.h
+@@ -1379,6 +1379,13 @@ UNUSUAL_DEV( 0x0bc2, 0x3010, 0x0000, 0x0000,
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_SANE_SENSE ),
+
++/* Reported by Kris Lindgren <kris.lindgren@gmail.com> */
++UNUSUAL_DEV( 0x0bc2, 0x3332, 0x0000, 0x9999,
++ "Seagate",
++ "External",
++ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
++ US_FL_NO_WP_DETECT ),
++
+ UNUSUAL_DEV( 0x0d49, 0x7310, 0x0000, 0x9999,
+ "Maxtor",
+ "USB to SATA",
+diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c
+index e75bbe5a10cd..1212b4b3c5a9 100644
+--- a/drivers/uwb/hwa-rc.c
++++ b/drivers/uwb/hwa-rc.c
+@@ -827,6 +827,8 @@ static int hwarc_probe(struct usb_interface *iface,
+
+ if (iface->cur_altsetting->desc.bNumEndpoints < 1)
+ return -ENODEV;
++ if (!usb_endpoint_xfer_int(&iface->cur_altsetting->endpoint[0].desc))
++ return -ENODEV;
+
+ result = -ENOMEM;
+ uwb_rc = uwb_rc_alloc();
+diff --git a/drivers/uwb/uwbd.c b/drivers/uwb/uwbd.c
+index bdcb13cc1d54..5c9828370217 100644
+--- a/drivers/uwb/uwbd.c
++++ b/drivers/uwb/uwbd.c
+@@ -303,18 +303,22 @@ static int uwbd(void *param)
+ /** Start the UWB daemon */
+ void uwbd_start(struct uwb_rc *rc)
+ {
+- rc->uwbd.task = kthread_run(uwbd, rc, "uwbd");
+- if (rc->uwbd.task == NULL)
++ struct task_struct *task = kthread_run(uwbd, rc, "uwbd");
++ if (IS_ERR(task)) {
++ rc->uwbd.task = NULL;
+ printk(KERN_ERR "UWB: Cannot start management daemon; "
+ "UWB won't work\n");
+- else
++ } else {
++ rc->uwbd.task = task;
+ rc->uwbd.pid = rc->uwbd.task->pid;
++ }
+ }
+
+ /* Stop the UWB daemon and free any unprocessed events */
+ void uwbd_stop(struct uwb_rc *rc)
+ {
+- kthread_stop(rc->uwbd.task);
++ if (rc->uwbd.task)
++ kthread_stop(rc->uwbd.task);
+ uwbd_flush(rc);
+ }
+
+diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c
+index 8789e487b96e..f84b5225aa5f 100644
+--- a/drivers/video/fbdev/aty/atyfb_base.c
++++ b/drivers/video/fbdev/aty/atyfb_base.c
+@@ -1852,7 +1852,7 @@ static int atyfb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
+ #if defined(DEBUG) && defined(CONFIG_FB_ATY_CT)
+ case ATYIO_CLKR:
+ if (M64_HAS(INTEGRATED)) {
+- struct atyclk clk;
++ struct atyclk clk = { 0 };
+ union aty_pll *pll = &par->pll;
+ u32 dsp_config = pll->ct.dsp_config;
+ u32 dsp_on_off = pll->ct.dsp_on_off;
+diff --git a/drivers/watchdog/kempld_wdt.c b/drivers/watchdog/kempld_wdt.c
+index 5bf931ce1353..978098f71761 100644
+--- a/drivers/watchdog/kempld_wdt.c
++++ b/drivers/watchdog/kempld_wdt.c
+@@ -140,12 +140,19 @@ static int kempld_wdt_set_stage_timeout(struct kempld_wdt_data *wdt_data,
+ unsigned int timeout)
+ {
+ struct kempld_device_data *pld = wdt_data->pld;
+- u32 prescaler = kempld_prescaler[PRESCALER_21];
++ u32 prescaler;
+ u64 stage_timeout64;
+ u32 stage_timeout;
+ u32 remainder;
+ u8 stage_cfg;
+
++#if GCC_VERSION < 40400
++ /* work around a bug compiling do_div() */
++ prescaler = READ_ONCE(kempld_prescaler[PRESCALER_21]);
++#else
++ prescaler = kempld_prescaler[PRESCALER_21];
++#endif
++
+ if (!stage)
+ return -EINVAL;
+
+diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
+index e227eb09b1a0..cea37ee4c615 100644
+--- a/drivers/xen/gntdev.c
++++ b/drivers/xen/gntdev.c
+@@ -827,6 +827,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
+ mutex_unlock(&priv->lock);
+
+ if (use_ptemod) {
++ map->pages_vm_start = vma->vm_start;
+ err = apply_to_page_range(vma->vm_mm, vma->vm_start,
+ vma->vm_end - vma->vm_start,
+ find_grant_ptes, map);
+@@ -864,7 +865,6 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
+ set_grant_ptes_as_special, NULL);
+ }
+ #endif
+- map->pages_vm_start = vma->vm_start;
+ }
+
+ return 0;
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index f1feb3123c9c..2b115c309e1c 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -3948,6 +3948,10 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp)
+ ret = PTR_ERR(new_root);
+ goto out;
+ }
++ if (!is_fstree(new_root->objectid)) {
++ ret = -ENOENT;
++ goto out;
++ }
+
+ path = btrfs_alloc_path();
+ if (!path) {
+diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
+index b2c1ab7cae78..5fe5314270fd 100644
+--- a/fs/btrfs/send.c
++++ b/fs/btrfs/send.c
+@@ -1641,6 +1641,9 @@ static int is_inode_existent(struct send_ctx *sctx, u64 ino, u64 gen)
+ {
+ int ret;
+
++ if (ino == BTRFS_FIRST_FREE_OBJECTID)
++ return 1;
++
+ ret = get_cur_inode_state(sctx, ino, gen);
+ if (ret < 0)
+ goto out;
+@@ -1826,7 +1829,7 @@ static int will_overwrite_ref(struct send_ctx *sctx, u64 dir, u64 dir_gen,
+ * not delted and then re-created, if it was then we have no overwrite
+ * and we can just unlink this entry.
+ */
+- if (sctx->parent_root) {
++ if (sctx->parent_root && dir != BTRFS_FIRST_FREE_OBJECTID) {
+ ret = get_inode_info(sctx->parent_root, dir, NULL, &gen, NULL,
+ NULL, NULL, NULL);
+ if (ret < 0 && ret != -ENOENT)
+diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
+index be5ea6af8366..2380d6916ea1 100644
+--- a/fs/ceph/caps.c
++++ b/fs/ceph/caps.c
+@@ -1791,6 +1791,7 @@ static int try_flush_caps(struct inode *inode, unsigned *flush_tid)
+ retry:
+ spin_lock(&ci->i_ceph_lock);
+ if (ci->i_ceph_flags & CEPH_I_NOFLUSH) {
++ spin_unlock(&ci->i_ceph_lock);
+ dout("try_flush_caps skipping %p I_NOFLUSH set\n", inode);
+ goto out;
+ }
+@@ -1808,8 +1809,10 @@ retry:
+ mutex_lock(&session->s_mutex);
+ goto retry;
+ }
+- if (cap->session->s_state < CEPH_MDS_SESSION_OPEN)
++ if (cap->session->s_state < CEPH_MDS_SESSION_OPEN) {
++ spin_unlock(&ci->i_ceph_lock);
+ goto out;
++ }
+
+ flushing = __mark_caps_flushing(inode, session);
+
+diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
+index 4f3bf0f527f6..c1105075e3e5 100644
+--- a/fs/ceph/mds_client.c
++++ b/fs/ceph/mds_client.c
+@@ -1803,13 +1803,18 @@ static int build_dentry_path(struct dentry *dentry,
+ int *pfreepath)
+ {
+ char *path;
++ struct inode *dir;
+
+- if (ceph_snap(d_inode(dentry->d_parent)) == CEPH_NOSNAP) {
+- *pino = ceph_ino(d_inode(dentry->d_parent));
++ rcu_read_lock();
++ dir = d_inode_rcu(dentry->d_parent);
++ if (dir && ceph_snap(dir) == CEPH_NOSNAP) {
++ *pino = ceph_ino(dir);
++ rcu_read_unlock();
+ *ppath = dentry->d_name.name;
+ *ppathlen = dentry->d_name.len;
+ return 0;
+ }
++ rcu_read_unlock();
+ path = ceph_mdsc_build_path(dentry, ppathlen, pino, 1);
+ if (IS_ERR(path))
+ return PTR_ERR(path);
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index cb3406815330..a2c100aed4b0 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -3957,6 +3957,14 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
+ cifs_dbg(FYI, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d\n",
+ server->sec_mode, server->capabilities, server->timeAdj);
+
++ if (ses->auth_key.response) {
++ cifs_dbg(VFS, "Free previous auth_key.response = %p\n",
++ ses->auth_key.response);
++ kfree(ses->auth_key.response);
++ ses->auth_key.response = NULL;
++ ses->auth_key.len = 0;
++ }
++
+ if (server->ops->sess_setup)
+ rc = server->ops->sess_setup(xid, ses, nls_info);
+
+diff --git a/fs/cifs/file.c b/fs/cifs/file.c
+index fcf986aa2abe..47e04038a846 100644
+--- a/fs/cifs/file.c
++++ b/fs/cifs/file.c
+@@ -224,6 +224,13 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
+ if (backup_cred(cifs_sb))
+ create_options |= CREATE_OPEN_BACKUP_INTENT;
+
++ /* O_SYNC also has bit for O_DSYNC so following check picks up either */
++ if (f_flags & O_SYNC)
++ create_options |= CREATE_WRITE_THROUGH;
++
++ if (f_flags & O_DIRECT)
++ create_options |= CREATE_NO_BUFFER;
++
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = desired_access;
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 2f6f164c83ab..0cf4a76e8e94 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -453,15 +453,22 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
+
+ /*
+ * validation ioctl must be signed, so no point sending this if we
+- * can not sign it. We could eventually change this to selectively
++ * can not sign it (ie are not known user). Even if signing is not
++ * required (enabled but not negotiated), in those cases we selectively
+ * sign just this, the first and only signed request on a connection.
+- * This is good enough for now since a user who wants better security
+- * would also enable signing on the mount. Having validation of
+- * negotiate info for signed connections helps reduce attack vectors
++ * Having validation of negotiate info helps reduce attack vectors.
+ */
+- if (tcon->ses->server->sign == false)
++ if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
+ return 0; /* validation requires signing */
+
++ if (tcon->ses->user_name == NULL) {
++ cifs_dbg(FYI, "Can't validate negotiate: null user mount\n");
++ return 0; /* validation requires signing */
++ }
++
++ if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
++ cifs_dbg(VFS, "Unexpected null user (anonymous) auth flag sent by server\n");
++
+ vneg_inbuf.Capabilities =
+ cpu_to_le32(tcon->ses->server->vals->req_capabilities);
+ memcpy(vneg_inbuf.Guid, tcon->ses->server->client_guid,
+diff --git a/fs/direct-io.c b/fs/direct-io.c
+index d83a021a659f..7484537424a7 100644
+--- a/fs/direct-io.c
++++ b/fs/direct-io.c
+@@ -813,7 +813,8 @@ out:
+ */
+ if (sdio->boundary) {
+ ret = dio_send_cur_page(dio, sdio, map_bh);
+- dio_bio_submit(dio, sdio);
++ if (sdio->bio)
++ dio_bio_submit(dio, sdio);
+ page_cache_release(sdio->cur_page);
+ sdio->cur_page = NULL;
+ }
+diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
+index c3fe1e323951..ea2ef0eac0c4 100644
+--- a/fs/ext4/acl.c
++++ b/fs/ext4/acl.c
+@@ -195,13 +195,6 @@ __ext4_set_acl(handle_t *handle, struct inode *inode, int type,
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
+- if (acl) {
+- error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
+- if (error)
+- return error;
+- inode->i_ctime = ext4_current_time(inode);
+- ext4_mark_inode_dirty(handle, inode);
+- }
+ break;
+
+ case ACL_TYPE_DEFAULT:
+@@ -234,6 +227,8 @@ ext4_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ {
+ handle_t *handle;
+ int error, retries = 0;
++ umode_t mode = inode->i_mode;
++ int update_mode = 0;
+
+ retry:
+ handle = ext4_journal_start(inode, EXT4_HT_XATTR,
+@@ -241,7 +236,20 @@ retry:
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+
++ if ((type == ACL_TYPE_ACCESS) && acl) {
++ error = posix_acl_update_mode(inode, &mode, &acl);
++ if (error)
++ goto out_stop;
++ update_mode = 1;
++ }
++
+ error = __ext4_set_acl(handle, inode, type, acl);
++ if (!error && update_mode) {
++ inode->i_mode = mode;
++ inode->i_ctime = ext4_current_time(inode);
++ ext4_mark_inode_dirty(handle, inode);
++ }
++out_stop:
+ ext4_journal_stop(handle);
+ if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
+ goto retry;
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index 2ab9fd88a7c3..1cc4bfa49823 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -1896,15 +1896,29 @@ static int ext4_writepage(struct page *page,
+ static int mpage_submit_page(struct mpage_da_data *mpd, struct page *page)
+ {
+ int len;
+- loff_t size = i_size_read(mpd->inode);
++ loff_t size;
+ int err;
+
+ BUG_ON(page->index != mpd->first_page);
+- if (page->index == size >> PAGE_CACHE_SHIFT)
+- len = size & ~PAGE_CACHE_MASK;
+- else
+- len = PAGE_CACHE_SIZE;
+ clear_page_dirty_for_io(page);
++ /*
++ * We have to be very careful here! Nothing protects writeback path
++ * against i_size changes and the page can be writeably mapped into
++ * page tables. So an application can be growing i_size and writing
++ * data through mmap while writeback runs. clear_page_dirty_for_io()
++ * write-protects our page in page tables and the page cannot get
++ * written to again until we release page lock. So only after
++ * clear_page_dirty_for_io() we are safe to sample i_size for
++ * ext4_bio_write_page() to zero-out tail of the written page. We rely
++ * on the barrier provided by TestClearPageDirty in
++ * clear_page_dirty_for_io() to make sure i_size is really sampled only
++ * after page tables are updated.
++ */
++ size = i_size_read(mpd->inode);
++ if (page->index == size >> PAGE_SHIFT)
++ len = size & ~PAGE_MASK;
++ else
++ len = PAGE_SIZE;
+ err = ext4_bio_write_page(&mpd->io_submit, page, len, mpd->wbc, false);
+ if (!err)
+ mpd->wbc->nr_to_write--;
+diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
+index 1e1aae669fa8..9242087a73c2 100644
+--- a/fs/f2fs/data.c
++++ b/fs/f2fs/data.c
+@@ -1590,7 +1590,12 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
+ goto fail;
+ }
+ repeat:
+- page = grab_cache_page_write_begin(mapping, index, flags);
++ /*
++ * Do not use grab_cache_page_write_begin() to avoid deadlock due to
++ * wait_for_stable_page. Will wait that below with our IO control.
++ */
++ page = pagecache_get_page(mapping, index,
++ FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS);
+ if (!page) {
+ err = -ENOMEM;
+ goto fail;
+diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
+index 88b09a33d117..b795117b3643 100644
+--- a/fs/fuse/dir.c
++++ b/fs/fuse/dir.c
+@@ -1295,7 +1295,8 @@ static int parse_dirplusfile(char *buf, size_t nbytes, struct file *file,
+ */
+ over = !dir_emit(ctx, dirent->name, dirent->namelen,
+ dirent->ino, dirent->type);
+- ctx->pos = dirent->off;
++ if (!over)
++ ctx->pos = dirent->off;
+ }
+
+ buf += reclen;
+diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
+index 4a4ac9386d4d..5c22d61869a4 100644
+--- a/fs/ocfs2/dlmglue.c
++++ b/fs/ocfs2/dlmglue.c
+@@ -531,6 +531,7 @@ void ocfs2_lock_res_init_once(struct ocfs2_lock_res *res)
+ init_waitqueue_head(&res->l_event);
+ INIT_LIST_HEAD(&res->l_blocked_list);
+ INIT_LIST_HEAD(&res->l_mask_waiters);
++ INIT_LIST_HEAD(&res->l_holders);
+ }
+
+ void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res,
+@@ -748,6 +749,50 @@ void ocfs2_lock_res_free(struct ocfs2_lock_res *res)
+ res->l_flags = 0UL;
+ }
+
++/*
++ * Keep a list of processes who have interest in a lockres.
++ * Note: this is now only uesed for check recursive cluster locking.
++ */
++static inline void ocfs2_add_holder(struct ocfs2_lock_res *lockres,
++ struct ocfs2_lock_holder *oh)
++{
++ INIT_LIST_HEAD(&oh->oh_list);
++ oh->oh_owner_pid = get_pid(task_pid(current));
++
++ spin_lock(&lockres->l_lock);
++ list_add_tail(&oh->oh_list, &lockres->l_holders);
++ spin_unlock(&lockres->l_lock);
++}
++
++static inline void ocfs2_remove_holder(struct ocfs2_lock_res *lockres,
++ struct ocfs2_lock_holder *oh)
++{
++ spin_lock(&lockres->l_lock);
++ list_del(&oh->oh_list);
++ spin_unlock(&lockres->l_lock);
++
++ put_pid(oh->oh_owner_pid);
++}
++
++static inline int ocfs2_is_locked_by_me(struct ocfs2_lock_res *lockres)
++{
++ struct ocfs2_lock_holder *oh;
++ struct pid *pid;
++
++ /* look in the list of holders for one with the current task as owner */
++ spin_lock(&lockres->l_lock);
++ pid = task_pid(current);
++ list_for_each_entry(oh, &lockres->l_holders, oh_list) {
++ if (oh->oh_owner_pid == pid) {
++ spin_unlock(&lockres->l_lock);
++ return 1;
++ }
++ }
++ spin_unlock(&lockres->l_lock);
++
++ return 0;
++}
++
+ static inline void ocfs2_inc_holders(struct ocfs2_lock_res *lockres,
+ int level)
+ {
+@@ -2343,8 +2388,9 @@ int ocfs2_inode_lock_full_nested(struct inode *inode,
+ goto getbh;
+ }
+
+- if (ocfs2_mount_local(osb))
+- goto local;
++ if ((arg_flags & OCFS2_META_LOCK_GETBH) ||
++ ocfs2_mount_local(osb))
++ goto update;
+
+ if (!(arg_flags & OCFS2_META_LOCK_RECOVERY))
+ ocfs2_wait_for_recovery(osb);
+@@ -2373,7 +2419,7 @@ int ocfs2_inode_lock_full_nested(struct inode *inode,
+ if (!(arg_flags & OCFS2_META_LOCK_RECOVERY))
+ ocfs2_wait_for_recovery(osb);
+
+-local:
++update:
+ /*
+ * We only see this flag if we're being called from
+ * ocfs2_read_locked_inode(). It means we're locking an inode
+@@ -2515,6 +2561,59 @@ void ocfs2_inode_unlock(struct inode *inode,
+ ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
+ }
+
++/*
++ * This _tracker variantes are introduced to deal with the recursive cluster
++ * locking issue. The idea is to keep track of a lock holder on the stack of
++ * the current process. If there's a lock holder on the stack, we know the
++ * task context is already protected by cluster locking. Currently, they're
++ * used in some VFS entry routines.
++ *
++ * return < 0 on error, return == 0 if there's no lock holder on the stack
++ * before this call, return == 1 if this call would be a recursive locking.
++ */
++int ocfs2_inode_lock_tracker(struct inode *inode,
++ struct buffer_head **ret_bh,
++ int ex,
++ struct ocfs2_lock_holder *oh)
++{
++ int status;
++ int arg_flags = 0, has_locked;
++ struct ocfs2_lock_res *lockres;
++
++ lockres = &OCFS2_I(inode)->ip_inode_lockres;
++ has_locked = ocfs2_is_locked_by_me(lockres);
++ /* Just get buffer head if the cluster lock has been taken */
++ if (has_locked)
++ arg_flags = OCFS2_META_LOCK_GETBH;
++
++ if (likely(!has_locked || ret_bh)) {
++ status = ocfs2_inode_lock_full(inode, ret_bh, ex, arg_flags);
++ if (status < 0) {
++ if (status != -ENOENT)
++ mlog_errno(status);
++ return status;
++ }
++ }
++ if (!has_locked)
++ ocfs2_add_holder(lockres, oh);
++
++ return has_locked;
++}
++
++void ocfs2_inode_unlock_tracker(struct inode *inode,
++ int ex,
++ struct ocfs2_lock_holder *oh,
++ int had_lock)
++{
++ struct ocfs2_lock_res *lockres;
++
++ lockres = &OCFS2_I(inode)->ip_inode_lockres;
++ if (!had_lock) {
++ ocfs2_remove_holder(lockres, oh);
++ ocfs2_inode_unlock(inode, ex);
++ }
++}
++
+ int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno)
+ {
+ struct ocfs2_lock_res *lockres;
+diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h
+index d293a22c32c5..a7fc18ba0dc1 100644
+--- a/fs/ocfs2/dlmglue.h
++++ b/fs/ocfs2/dlmglue.h
+@@ -70,6 +70,11 @@ struct ocfs2_orphan_scan_lvb {
+ __be32 lvb_os_seqno;
+ };
+
++struct ocfs2_lock_holder {
++ struct list_head oh_list;
++ struct pid *oh_owner_pid;
++};
++
+ /* ocfs2_inode_lock_full() 'arg_flags' flags */
+ /* don't wait on recovery. */
+ #define OCFS2_META_LOCK_RECOVERY (0x01)
+@@ -77,6 +82,8 @@ struct ocfs2_orphan_scan_lvb {
+ #define OCFS2_META_LOCK_NOQUEUE (0x02)
+ /* don't block waiting for the downconvert thread, instead return -EAGAIN */
+ #define OCFS2_LOCK_NONBLOCK (0x04)
++/* just get back disk inode bh if we've got cluster lock. */
++#define OCFS2_META_LOCK_GETBH (0x08)
+
+ /* Locking subclasses of inode cluster lock */
+ enum {
+@@ -170,4 +177,15 @@ void ocfs2_put_dlm_debug(struct ocfs2_dlm_debug *dlm_debug);
+
+ /* To set the locking protocol on module initialization */
+ void ocfs2_set_locking_protocol(void);
++
++/* The _tracker pair is used to avoid cluster recursive locking */
++int ocfs2_inode_lock_tracker(struct inode *inode,
++ struct buffer_head **ret_bh,
++ int ex,
++ struct ocfs2_lock_holder *oh);
++void ocfs2_inode_unlock_tracker(struct inode *inode,
++ int ex,
++ struct ocfs2_lock_holder *oh,
++ int had_lock);
++
+ #endif /* DLMGLUE_H */
+diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
+index 460c6c37e683..2424adbc4fef 100644
+--- a/fs/ocfs2/ocfs2.h
++++ b/fs/ocfs2/ocfs2.h
+@@ -172,6 +172,7 @@ struct ocfs2_lock_res {
+
+ struct list_head l_blocked_list;
+ struct list_head l_mask_waiters;
++ struct list_head l_holders;
+
+ unsigned long l_flags;
+ char l_name[OCFS2_LOCK_ID_MAX_LEN];
+diff --git a/fs/read_write.c b/fs/read_write.c
+index 819ef3faf1bb..bfd1a5dddf6e 100644
+--- a/fs/read_write.c
++++ b/fs/read_write.c
+@@ -112,7 +112,7 @@ generic_file_llseek_size(struct file *file, loff_t offset, int whence,
+ * In the generic case the entire file is data, so as long as
+ * offset isn't at the end of the file then the offset is data.
+ */
+- if (offset >= eof)
++ if ((unsigned long long)offset >= eof)
+ return -ENXIO;
+ break;
+ case SEEK_HOLE:
+@@ -120,7 +120,7 @@ generic_file_llseek_size(struct file *file, loff_t offset, int whence,
+ * There is a virtual hole at the end of the file, so as long as
+ * offset isn't i_size or larger, return i_size.
+ */
+- if (offset >= eof)
++ if ((unsigned long long)offset >= eof)
+ return -ENXIO;
+ offset = eof;
+ break;
+diff --git a/fs/xattr.c b/fs/xattr.c
+index 81d4695a6115..c7219609bd40 100644
+--- a/fs/xattr.c
++++ b/fs/xattr.c
+@@ -163,7 +163,7 @@ xattr_getsecurity(struct inode *inode, const char *name, void *value,
+ }
+ memcpy(value, buffer, len);
+ out:
+- security_release_secctx(buffer, len);
++ kfree(buffer);
+ out_noalloc:
+ return len;
+ }
+diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c
+index a7a3a63bb360..ab018bafb777 100644
+--- a/fs/xfs/kmem.c
++++ b/fs/xfs/kmem.c
+@@ -24,24 +24,6 @@
+ #include "kmem.h"
+ #include "xfs_message.h"
+
+-/*
+- * Greedy allocation. May fail and may return vmalloced memory.
+- */
+-void *
+-kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize)
+-{
+- void *ptr;
+- size_t kmsize = maxsize;
+-
+- while (!(ptr = vzalloc(kmsize))) {
+- if ((kmsize >>= 1) <= minsize)
+- kmsize = minsize;
+- }
+- if (ptr)
+- *size = kmsize;
+- return ptr;
+-}
+-
+ void *
+ kmem_alloc(size_t size, xfs_km_flags_t flags)
+ {
+diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h
+index cc6b768fc068..ae45f77ce33b 100644
+--- a/fs/xfs/kmem.h
++++ b/fs/xfs/kmem.h
+@@ -69,8 +69,6 @@ static inline void kmem_free(const void *ptr)
+ }
+
+
+-extern void *kmem_zalloc_greedy(size_t *, size_t, size_t);
+-
+ static inline void *
+ kmem_zalloc(size_t size, xfs_km_flags_t flags)
+ {
+diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
+index b5cab0d1831b..7c89623f891b 100644
+--- a/fs/xfs/xfs_itable.c
++++ b/fs/xfs/xfs_itable.c
+@@ -351,7 +351,6 @@ xfs_bulkstat(
+ xfs_agino_t agino; /* inode # in allocation group */
+ xfs_agnumber_t agno; /* allocation group number */
+ xfs_btree_cur_t *cur; /* btree cursor for ialloc btree */
+- size_t irbsize; /* size of irec buffer in bytes */
+ xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */
+ int nirbuf; /* size of irbuf */
+ int ubcount; /* size of user's buffer */
+@@ -378,11 +377,10 @@ xfs_bulkstat(
+ *ubcountp = 0;
+ *done = 0;
+
+- irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4);
++ irbuf = kmem_zalloc_large(PAGE_SIZE * 4, KM_SLEEP);
+ if (!irbuf)
+ return -ENOMEM;
+-
+- nirbuf = irbsize / sizeof(*irbuf);
++ nirbuf = (PAGE_SIZE * 4) / sizeof(*irbuf);
+
+ /*
+ * Loop over the allocation groups, starting from the last
+diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
+index 4d9f233c4ba8..7d58ffdacd62 100644
+--- a/include/asm-generic/percpu.h
++++ b/include/asm-generic/percpu.h
+@@ -105,15 +105,35 @@ do { \
+ (__ret); \
+ })
+
+-#define this_cpu_generic_read(pcp) \
++#define __this_cpu_generic_read_nopreempt(pcp) \
+ ({ \
+ typeof(pcp) __ret; \
+ preempt_disable(); \
+- __ret = *this_cpu_ptr(&(pcp)); \
++ __ret = READ_ONCE(*raw_cpu_ptr(&(pcp))); \
+ preempt_enable(); \
+ __ret; \
+ })
+
++#define __this_cpu_generic_read_noirq(pcp) \
++({ \
++ typeof(pcp) __ret; \
++ unsigned long __flags; \
++ raw_local_irq_save(__flags); \
++ __ret = *raw_cpu_ptr(&(pcp)); \
++ raw_local_irq_restore(__flags); \
++ __ret; \
++})
++
++#define this_cpu_generic_read(pcp) \
++({ \
++ typeof(pcp) __ret; \
++ if (__native_word(pcp)) \
++ __ret = __this_cpu_generic_read_nopreempt(pcp); \
++ else \
++ __ret = __this_cpu_generic_read_noirq(pcp); \
++ __ret; \
++})
++
+ #define this_cpu_generic_to_op(pcp, val, op) \
+ do { \
+ unsigned long __flags; \
+diff --git a/include/linux/audit.h b/include/linux/audit.h
+index c2e7e3a83965..d810e6e55d79 100644
+--- a/include/linux/audit.h
++++ b/include/linux/audit.h
+@@ -277,6 +277,20 @@ static inline int audit_socketcall(int nargs, unsigned long *args)
+ return __audit_socketcall(nargs, args);
+ return 0;
+ }
++
++static inline int audit_socketcall_compat(int nargs, u32 *args)
++{
++ unsigned long a[AUDITSC_ARGS];
++ int i;
++
++ if (audit_dummy_context())
++ return 0;
++
++ for (i = 0; i < nargs; i++)
++ a[i] = (unsigned long)args[i];
++ return __audit_socketcall(nargs, a);
++}
++
+ static inline int audit_sockaddr(int len, void *addr)
+ {
+ if (unlikely(!audit_dummy_context()))
+@@ -403,6 +417,12 @@ static inline int audit_socketcall(int nargs, unsigned long *args)
+ {
+ return 0;
+ }
++
++static inline int audit_socketcall_compat(int nargs, u32 *args)
++{
++ return 0;
++}
++
+ static inline void audit_fd_pair(int fd1, int fd2)
+ { }
+ static inline int audit_sockaddr(int len, void *addr)
+diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
+index 1b357997cac5..d7d426c3c9b1 100644
+--- a/include/linux/cpuset.h
++++ b/include/linux/cpuset.h
+@@ -40,7 +40,9 @@ static inline void cpuset_dec(void)
+
+ extern int cpuset_init(void);
+ extern void cpuset_init_smp(void);
++extern void cpuset_force_rebuild(void);
+ extern void cpuset_update_active_cpus(bool cpu_online);
++extern void cpuset_wait_for_hotplug(void);
+ extern void cpuset_cpus_allowed(struct task_struct *p, struct cpumask *mask);
+ extern void cpuset_cpus_allowed_fallback(struct task_struct *p);
+ extern nodemask_t cpuset_mems_allowed(struct task_struct *p);
+@@ -138,11 +140,15 @@ static inline bool cpusets_enabled(void) { return false; }
+ static inline int cpuset_init(void) { return 0; }
+ static inline void cpuset_init_smp(void) {}
+
++static inline void cpuset_force_rebuild(void) { }
++
+ static inline void cpuset_update_active_cpus(bool cpu_online)
+ {
+ partition_sched_domains(1, NULL, NULL);
+ }
+
++static inline void cpuset_wait_for_hotplug(void) { }
++
+ static inline void cpuset_cpus_allowed(struct task_struct *p,
+ struct cpumask *mask)
+ {
+diff --git a/include/linux/iio/adc/ad_sigma_delta.h b/include/linux/iio/adc/ad_sigma_delta.h
+index e7fdec4db9da..6cc48ac55fd2 100644
+--- a/include/linux/iio/adc/ad_sigma_delta.h
++++ b/include/linux/iio/adc/ad_sigma_delta.h
+@@ -111,6 +111,9 @@ int ad_sd_write_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
+ int ad_sd_read_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
+ unsigned int size, unsigned int *val);
+
++int ad_sd_reset(struct ad_sigma_delta *sigma_delta,
++ unsigned int reset_length);
++
+ int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int *val);
+ int ad_sd_calibrate_all(struct ad_sigma_delta *sigma_delta,
+diff --git a/include/linux/key.h b/include/linux/key.h
+index e1d4715f3222..dcc00a7a5b8d 100644
+--- a/include/linux/key.h
++++ b/include/linux/key.h
+@@ -172,6 +172,7 @@ struct key {
+ #define KEY_FLAG_TRUSTED_ONLY 9 /* set if keyring only accepts links to trusted keys */
+ #define KEY_FLAG_BUILTIN 10 /* set if key is builtin */
+ #define KEY_FLAG_ROOT_CAN_INVAL 11 /* set if key can be invalidated by root without permission */
++#define KEY_FLAG_UID_KEYRING 12 /* set if key is a user or user session keyring */
+
+ /* the key type and key description string
+ * - the desc is used to match a key against search criteria
+@@ -223,6 +224,7 @@ extern struct key *key_alloc(struct key_type *type,
+ #define KEY_ALLOC_QUOTA_OVERRUN 0x0001 /* add to quota, permit even if overrun */
+ #define KEY_ALLOC_NOT_IN_QUOTA 0x0002 /* not in quota */
+ #define KEY_ALLOC_TRUSTED 0x0004 /* Key should be flagged as trusted */
++#define KEY_ALLOC_UID_KEYRING 0x0010 /* allocating a user or user session keyring */
+
+ extern void key_revoke(struct key *key);
+ extern void key_invalidate(struct key *key);
+diff --git a/include/linux/mbus.h b/include/linux/mbus.h
+index 611b69fa8594..653aa56a13ca 100644
+--- a/include/linux/mbus.h
++++ b/include/linux/mbus.h
+@@ -29,8 +29,8 @@ struct mbus_dram_target_info
+ struct mbus_dram_window {
+ u8 cs_index;
+ u8 mbus_attr;
+- u32 base;
+- u32 size;
++ u64 base;
++ u64 size;
+ } cs[4];
+ };
+
+diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
+index aab032a6ae61..97ca105347a6 100644
+--- a/include/linux/mmc/sdio_func.h
++++ b/include/linux/mmc/sdio_func.h
+@@ -53,7 +53,7 @@ struct sdio_func {
+ unsigned int state; /* function state */
+ #define SDIO_STATE_PRESENT (1<<0) /* present in sysfs */
+
+- u8 tmpbuf[4]; /* DMA:able scratch buffer */
++ u8 *tmpbuf; /* DMA:able scratch buffer */
+
+ unsigned num_info; /* number of info strings */
+ const char **info; /* info strings */
+diff --git a/include/linux/platform_data/mmp_dma.h b/include/linux/platform_data/mmp_dma.h
+index 2a330ec9e2af..d1397c8ed94e 100644
+--- a/include/linux/platform_data/mmp_dma.h
++++ b/include/linux/platform_data/mmp_dma.h
+@@ -14,6 +14,7 @@
+
+ struct mmp_dma_platdata {
+ int dma_channels;
++ int nb_requestors;
+ };
+
+ #endif /* MMP_DMA_H */
+diff --git a/include/net/sctp/ulpevent.h b/include/net/sctp/ulpevent.h
+index cccdcfd14973..f348c736e6e0 100644
+--- a/include/net/sctp/ulpevent.h
++++ b/include/net/sctp/ulpevent.h
+@@ -141,8 +141,12 @@ __u16 sctp_ulpevent_get_notification_type(const struct sctp_ulpevent *event);
+ static inline int sctp_ulpevent_type_enabled(__u16 sn_type,
+ struct sctp_event_subscribe *mask)
+ {
++ int offset = sn_type - SCTP_SN_TYPE_BASE;
+ char *amask = (char *) mask;
+- return amask[sn_type - SCTP_SN_TYPE_BASE];
++
++ if (offset >= sizeof(struct sctp_event_subscribe))
++ return 0;
++ return amask[offset];
+ }
+
+ /* Given an event subscription, is this event enabled? */
+diff --git a/include/sound/seq_virmidi.h b/include/sound/seq_virmidi.h
+index a03acd0d398a..695257ae64ac 100644
+--- a/include/sound/seq_virmidi.h
++++ b/include/sound/seq_virmidi.h
+@@ -60,6 +60,7 @@ struct snd_virmidi_dev {
+ int port; /* created/attached port */
+ unsigned int flags; /* SNDRV_VIRMIDI_* */
+ rwlock_t filelist_lock;
++ struct rw_semaphore filelist_sem;
+ struct list_head filelist;
+ };
+
+diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
+index 07735822a28f..c43dd2b765b1 100644
+--- a/include/uapi/drm/drm_fourcc.h
++++ b/include/uapi/drm/drm_fourcc.h
+@@ -143,6 +143,7 @@
+
+ /* Vendor Ids: */
+ #define DRM_FORMAT_MOD_NONE 0
++#define DRM_FORMAT_MOD_VENDOR_NONE 0
+ #define DRM_FORMAT_MOD_VENDOR_INTEL 0x01
+ #define DRM_FORMAT_MOD_VENDOR_AMD 0x02
+ #define DRM_FORMAT_MOD_VENDOR_NV 0x03
+diff --git a/include/uapi/linux/mroute6.h b/include/uapi/linux/mroute6.h
+index ce91215cf7e6..e0b566dc72ef 100644
+--- a/include/uapi/linux/mroute6.h
++++ b/include/uapi/linux/mroute6.h
+@@ -3,6 +3,7 @@
+
+ #include <linux/types.h>
+ #include <linux/sockios.h>
++#include <linux/in6.h> /* For struct sockaddr_in6. */
+
+ /*
+ * Based on the MROUTING 3.5 defines primarily to keep
+diff --git a/include/uapi/linux/rds.h b/include/uapi/linux/rds.h
+index 91950950aa59..25e865320288 100644
+--- a/include/uapi/linux/rds.h
++++ b/include/uapi/linux/rds.h
+@@ -35,6 +35,7 @@
+ #define _LINUX_RDS_H
+
+ #include <linux/types.h>
++#include <linux/socket.h> /* For __kernel_sockaddr_storage. */
+
+ #define RDS_IB_ABI_VERSION 0x301
+
+@@ -213,7 +214,7 @@ struct rds_get_mr_args {
+ };
+
+ struct rds_get_mr_for_dest_args {
+- struct sockaddr_storage dest_addr;
++ struct __kernel_sockaddr_storage dest_addr;
+ struct rds_iovec vec;
+ uint64_t cookie_addr;
+ uint64_t flags;
+diff --git a/include/uapi/linux/spi/spidev.h b/include/uapi/linux/spi/spidev.h
+index dd5f21e75805..856de39d0b89 100644
+--- a/include/uapi/linux/spi/spidev.h
++++ b/include/uapi/linux/spi/spidev.h
+@@ -23,6 +23,7 @@
+ #define SPIDEV_H
+
+ #include <linux/types.h>
++#include <linux/ioctl.h>
+
+ /* User space versions of kernel symbols for SPI clocking modes,
+ * matching <linux/spi/spi.h>
+diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
+index aa33fd1b2d4f..400196c45b3c 100644
+--- a/include/uapi/linux/usb/ch9.h
++++ b/include/uapi/linux/usb/ch9.h
+@@ -705,6 +705,7 @@ struct usb_interface_assoc_descriptor {
+ __u8 iFunction;
+ } __attribute__ ((packed));
+
++#define USB_DT_INTERFACE_ASSOCIATION_SIZE 8
+
+ /*-------------------------------------------------------------------------*/
+
+diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
+index efd143dcedf1..1bdc6f910a1d 100644
+--- a/kernel/bpf/verifier.c
++++ b/kernel/bpf/verifier.c
+@@ -926,7 +926,8 @@ static int check_alu_op(struct reg_state *regs, struct bpf_insn *insn)
+ }
+ } else {
+ if (insn->src_reg != BPF_REG_0 || insn->off != 0 ||
+- (insn->imm != 16 && insn->imm != 32 && insn->imm != 64)) {
++ (insn->imm != 16 && insn->imm != 32 && insn->imm != 64) ||
++ BPF_CLASS(insn->code) == BPF_ALU64) {
+ verbose("BPF_END uses reserved fields\n");
+ return -EINVAL;
+ }
+diff --git a/kernel/cpuset.c b/kernel/cpuset.c
+index d222a0c32e34..ec15d7f7ceb9 100644
+--- a/kernel/cpuset.c
++++ b/kernel/cpuset.c
+@@ -2246,6 +2246,13 @@ retry:
+ mutex_unlock(&cpuset_mutex);
+ }
+
++static bool force_rebuild;
++
++void cpuset_force_rebuild(void)
++{
++ force_rebuild = true;
++}
++
+ /**
+ * cpuset_hotplug_workfn - handle CPU/memory hotunplug for a cpuset
+ *
+@@ -2320,8 +2327,10 @@ static void cpuset_hotplug_workfn(struct work_struct *work)
+ }
+
+ /* rebuild sched domains if cpus_allowed has changed */
+- if (cpus_updated)
++ if (cpus_updated || force_rebuild) {
++ force_rebuild = false;
+ rebuild_sched_domains();
++ }
+ }
+
+ void cpuset_update_active_cpus(bool cpu_online)
+@@ -2340,6 +2349,11 @@ void cpuset_update_active_cpus(bool cpu_online)
+ schedule_work(&cpuset_hotplug_work);
+ }
+
++void cpuset_wait_for_hotplug(void)
++{
++ flush_work(&cpuset_hotplug_work);
++}
++
+ /*
+ * Keep top_cpuset.mems_allowed tracking node_states[N_MEMORY].
+ * Call this routine anytime after node_states[N_MEMORY] changes.
+diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
+index aaeae885d9af..a42ad8d8a4a5 100644
+--- a/kernel/locking/lockdep.c
++++ b/kernel/locking/lockdep.c
+@@ -3128,10 +3128,17 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass,
+ if (depth) {
+ hlock = curr->held_locks + depth - 1;
+ if (hlock->class_idx == class_idx && nest_lock) {
+- if (hlock->references)
++ if (hlock->references) {
++ /*
++ * Check: unsigned int references:12, overflow.
++ */
++ if (DEBUG_LOCKS_WARN_ON(hlock->references == (1 << 12)-1))
++ return 0;
++
+ hlock->references++;
+- else
++ } else {
+ hlock->references = 2;
++ }
+
+ return 1;
+ }
+diff --git a/kernel/power/process.c b/kernel/power/process.c
+index 564f786df470..ba2029a02259 100644
+--- a/kernel/power/process.c
++++ b/kernel/power/process.c
+@@ -18,8 +18,9 @@
+ #include <linux/workqueue.h>
+ #include <linux/kmod.h>
+ #include <trace/events/power.h>
++#include <linux/cpuset.h>
+
+-/*
++/*
+ * Timeout for stopping processes
+ */
+ unsigned int __read_mostly freeze_timeout_msecs = 20 * MSEC_PER_SEC;
+@@ -198,6 +199,8 @@ void thaw_processes(void)
+ __usermodehelper_set_disable_depth(UMH_FREEZING);
+ thaw_workqueues();
+
++ cpuset_wait_for_hotplug();
++
+ read_lock(&tasklist_lock);
+ for_each_process_thread(g, p) {
+ /* No other threads should have PF_SUSPEND_TASK set */
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 976d5fbcd60d..f2f8ff54d2c0 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -7024,17 +7024,16 @@ static int cpuset_cpu_active(struct notifier_block *nfb, unsigned long action,
+ * operation in the resume sequence, just build a single sched
+ * domain, ignoring cpusets.
+ */
+- num_cpus_frozen--;
+- if (likely(num_cpus_frozen)) {
+- partition_sched_domains(1, NULL, NULL);
++ partition_sched_domains(1, NULL, NULL);
++ if (--num_cpus_frozen)
+ break;
+- }
+
+ /*
+ * This is the last CPU online operation. So fall through and
+ * restore the original sched domains by considering the
+ * cpuset configurations.
+ */
++ cpuset_force_rebuild();
+
+ case CPU_ONLINE:
+ cpuset_update_active_cpus(true);
+diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
+index 06d0e5712e86..05eeb7bd9f99 100644
+--- a/kernel/trace/ftrace.c
++++ b/kernel/trace/ftrace.c
+@@ -4286,9 +4286,6 @@ static char ftrace_graph_buf[FTRACE_FILTER_SIZE] __initdata;
+ static char ftrace_graph_notrace_buf[FTRACE_FILTER_SIZE] __initdata;
+ static int ftrace_set_func(unsigned long *array, int *idx, int size, char *buffer);
+
+-static unsigned long save_global_trampoline;
+-static unsigned long save_global_flags;
+-
+ static int __init set_graph_function(char *str)
+ {
+ strlcpy(ftrace_graph_buf, str, FTRACE_FILTER_SIZE);
+@@ -5879,17 +5876,6 @@ void unregister_ftrace_graph(void)
+ unregister_pm_notifier(&ftrace_suspend_notifier);
+ unregister_trace_sched_switch(ftrace_graph_probe_sched_switch, NULL);
+
+-#ifdef CONFIG_DYNAMIC_FTRACE
+- /*
+- * Function graph does not allocate the trampoline, but
+- * other global_ops do. We need to reset the ALLOC_TRAMP flag
+- * if one was used.
+- */
+- global_ops.trampoline = save_global_trampoline;
+- if (save_global_flags & FTRACE_OPS_FL_ALLOC_TRAMP)
+- global_ops.flags |= FTRACE_OPS_FL_ALLOC_TRAMP;
+-#endif
+-
+ out:
+ mutex_unlock(&ftrace_lock);
+ }
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index 17213d74540b..ca1a306ea7e6 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -3218,11 +3218,17 @@ static int tracing_open(struct inode *inode, struct file *file)
+ /* If this file was open for write, then erase contents */
+ if ((file->f_mode & FMODE_WRITE) && (file->f_flags & O_TRUNC)) {
+ int cpu = tracing_get_cpu(inode);
++ struct trace_buffer *trace_buf = &tr->trace_buffer;
++
++#ifdef CONFIG_TRACER_MAX_TRACE
++ if (tr->current_trace->print_max)
++ trace_buf = &tr->max_buffer;
++#endif
+
+ if (cpu == RING_BUFFER_ALL_CPUS)
+- tracing_reset_online_cpus(&tr->trace_buffer);
++ tracing_reset_online_cpus(trace_buf);
+ else
+- tracing_reset(&tr->trace_buffer, cpu);
++ tracing_reset(trace_buf, cpu);
+ }
+
+ if (file->f_mode & FMODE_READ) {
+@@ -4668,7 +4674,7 @@ static int tracing_wait_pipe(struct file *filp)
+ *
+ * iter->pos will be 0 if we haven't read anything.
+ */
+- if (!tracing_is_on() && iter->pos)
++ if (!tracer_tracing_is_on(iter->tr) && iter->pos)
+ break;
+
+ mutex_unlock(&iter->mutex);
+diff --git a/kernel/workqueue.c b/kernel/workqueue.c
+index 9cdf3bfc9178..791f6ebc84a3 100644
+--- a/kernel/workqueue.c
++++ b/kernel/workqueue.c
+@@ -68,6 +68,7 @@ enum {
+ * attach_mutex to avoid changing binding state while
+ * worker_attach_to_pool() is in progress.
+ */
++ POOL_MANAGER_ACTIVE = 1 << 0, /* being managed */
+ POOL_DISASSOCIATED = 1 << 2, /* cpu can't serve workers */
+
+ /* worker flags */
+@@ -163,7 +164,6 @@ struct worker_pool {
+ /* L: hash of busy workers */
+
+ /* see manage_workers() for details on the two manager mutexes */
+- struct mutex manager_arb; /* manager arbitration */
+ struct worker *manager; /* L: purely informational */
+ struct mutex attach_mutex; /* attach/detach exclusion */
+ struct list_head workers; /* A: attached workers */
+@@ -300,6 +300,7 @@ static struct workqueue_attrs *wq_update_unbound_numa_attrs_buf;
+
+ static DEFINE_MUTEX(wq_pool_mutex); /* protects pools and workqueues list */
+ static DEFINE_SPINLOCK(wq_mayday_lock); /* protects wq->maydays list */
++static DECLARE_WAIT_QUEUE_HEAD(wq_manager_wait); /* wait for manager to go away */
+
+ static LIST_HEAD(workqueues); /* PR: list of all workqueues */
+ static bool workqueue_freezing; /* PL: have wqs started freezing? */
+@@ -813,7 +814,7 @@ static bool need_to_create_worker(struct worker_pool *pool)
+ /* Do we have too many workers and should some go away? */
+ static bool too_many_workers(struct worker_pool *pool)
+ {
+- bool managing = mutex_is_locked(&pool->manager_arb);
++ bool managing = pool->flags & POOL_MANAGER_ACTIVE;
+ int nr_idle = pool->nr_idle + managing; /* manager is considered idle */
+ int nr_busy = pool->nr_workers - nr_idle;
+
+@@ -1959,24 +1960,17 @@ static bool manage_workers(struct worker *worker)
+ {
+ struct worker_pool *pool = worker->pool;
+
+- /*
+- * Anyone who successfully grabs manager_arb wins the arbitration
+- * and becomes the manager. mutex_trylock() on pool->manager_arb
+- * failure while holding pool->lock reliably indicates that someone
+- * else is managing the pool and the worker which failed trylock
+- * can proceed to executing work items. This means that anyone
+- * grabbing manager_arb is responsible for actually performing
+- * manager duties. If manager_arb is grabbed and released without
+- * actual management, the pool may stall indefinitely.
+- */
+- if (!mutex_trylock(&pool->manager_arb))
++ if (pool->flags & POOL_MANAGER_ACTIVE)
+ return false;
++
++ pool->flags |= POOL_MANAGER_ACTIVE;
+ pool->manager = worker;
+
+ maybe_create_worker(pool);
+
+ pool->manager = NULL;
+- mutex_unlock(&pool->manager_arb);
++ pool->flags &= ~POOL_MANAGER_ACTIVE;
++ wake_up(&wq_manager_wait);
+ return true;
+ }
+
+@@ -3156,7 +3150,6 @@ static int init_worker_pool(struct worker_pool *pool)
+ setup_timer(&pool->mayday_timer, pool_mayday_timeout,
+ (unsigned long)pool);
+
+- mutex_init(&pool->manager_arb);
+ mutex_init(&pool->attach_mutex);
+ INIT_LIST_HEAD(&pool->workers);
+
+@@ -3226,13 +3219,15 @@ static void put_unbound_pool(struct worker_pool *pool)
+ hash_del(&pool->hash_node);
+
+ /*
+- * Become the manager and destroy all workers. Grabbing
+- * manager_arb prevents @pool's workers from blocking on
+- * attach_mutex.
++ * Become the manager and destroy all workers. This prevents
++ * @pool's workers from blocking on attach_mutex. We're the last
++ * manager and @pool gets freed with the flag set.
+ */
+- mutex_lock(&pool->manager_arb);
+-
+ spin_lock_irq(&pool->lock);
++ wait_event_lock_irq(wq_manager_wait,
++ !(pool->flags & POOL_MANAGER_ACTIVE), pool->lock);
++ pool->flags |= POOL_MANAGER_ACTIVE;
++
+ while ((worker = first_idle_worker(pool)))
+ destroy_worker(worker);
+ WARN_ON(pool->nr_workers || pool->nr_idle);
+@@ -3246,8 +3241,6 @@ static void put_unbound_pool(struct worker_pool *pool)
+ if (pool->detach_completion)
+ wait_for_completion(pool->detach_completion);
+
+- mutex_unlock(&pool->manager_arb);
+-
+ /* shut down the timers */
+ del_timer_sync(&pool->idle_timer);
+ del_timer_sync(&pool->mayday_timer);
+diff --git a/lib/assoc_array.c b/lib/assoc_array.c
+index 59fd7c0b119c..5cd093589c5a 100644
+--- a/lib/assoc_array.c
++++ b/lib/assoc_array.c
+@@ -598,21 +598,31 @@ static bool assoc_array_insert_into_terminal_node(struct assoc_array_edit *edit,
+ if ((edit->segment_cache[ASSOC_ARRAY_FAN_OUT] ^ base_seg) == 0)
+ goto all_leaves_cluster_together;
+
+- /* Otherwise we can just insert a new node ahead of the old
+- * one.
++ /* Otherwise all the old leaves cluster in the same slot, but
++ * the new leaf wants to go into a different slot - so we
++ * create a new node (n0) to hold the new leaf and a pointer to
++ * a new node (n1) holding all the old leaves.
++ *
++ * This can be done by falling through to the node splitting
++ * path.
+ */
+- goto present_leaves_cluster_but_not_new_leaf;
++ pr_devel("present leaves cluster but not new leaf\n");
+ }
+
+ split_node:
+ pr_devel("split node\n");
+
+- /* We need to split the current node; we know that the node doesn't
+- * simply contain a full set of leaves that cluster together (it
+- * contains meta pointers and/or non-clustering leaves).
++ /* We need to split the current node. The node must contain anything
++ * from a single leaf (in the one leaf case, this leaf will cluster
++ * with the new leaf) and the rest meta-pointers, to all leaves, some
++ * of which may cluster.
++ *
++ * It won't contain the case in which all the current leaves plus the
++ * new leaves want to cluster in the same slot.
+ *
+ * We need to expel at least two leaves out of a set consisting of the
+- * leaves in the node and the new leaf.
++ * leaves in the node and the new leaf. The current meta pointers can
++ * just be copied as they shouldn't cluster with any of the leaves.
+ *
+ * We need a new node (n0) to replace the current one and a new node to
+ * take the expelled nodes (n1).
+@@ -717,33 +727,6 @@ found_slot_for_multiple_occupancy:
+ pr_devel("<--%s() = ok [split node]\n", __func__);
+ return true;
+
+-present_leaves_cluster_but_not_new_leaf:
+- /* All the old leaves cluster in the same slot, but the new leaf wants
+- * to go into a different slot, so we create a new node to hold the new
+- * leaf and a pointer to a new node holding all the old leaves.
+- */
+- pr_devel("present leaves cluster but not new leaf\n");
+-
+- new_n0->back_pointer = node->back_pointer;
+- new_n0->parent_slot = node->parent_slot;
+- new_n0->nr_leaves_on_branch = node->nr_leaves_on_branch;
+- new_n1->back_pointer = assoc_array_node_to_ptr(new_n0);
+- new_n1->parent_slot = edit->segment_cache[0];
+- new_n1->nr_leaves_on_branch = node->nr_leaves_on_branch;
+- edit->adjust_count_on = new_n0;
+-
+- for (i = 0; i < ASSOC_ARRAY_FAN_OUT; i++)
+- new_n1->slots[i] = node->slots[i];
+-
+- new_n0->slots[edit->segment_cache[0]] = assoc_array_node_to_ptr(new_n0);
+- edit->leaf_p = &new_n0->slots[edit->segment_cache[ASSOC_ARRAY_FAN_OUT]];
+-
+- edit->set[0].ptr = &assoc_array_ptr_to_node(node->back_pointer)->slots[node->parent_slot];
+- edit->set[0].to = assoc_array_node_to_ptr(new_n0);
+- edit->excised_meta[0] = assoc_array_node_to_ptr(node);
+- pr_devel("<--%s() = ok [insert node before]\n", __func__);
+- return true;
+-
+ all_leaves_cluster_together:
+ /* All the leaves, new and old, want to cluster together in this node
+ * in the same slot, so we have to replace this node with a shortcut to
+diff --git a/lib/digsig.c b/lib/digsig.c
+index ae05ea393fc8..4b8ef0bd315b 100644
+--- a/lib/digsig.c
++++ b/lib/digsig.c
+@@ -86,6 +86,12 @@ static int digsig_verify_rsa(struct key *key,
+ down_read(&key->sem);
+ ukp = key->payload.data;
+
++ if (!ukp) {
++ /* key was revoked before we acquired its semaphore */
++ err = -EKEYREVOKED;
++ goto err1;
++ }
++
+ if (ukp->datalen < sizeof(*pkh))
+ goto err1;
+
+diff --git a/mm/slab_common.c b/mm/slab_common.c
+index 999bb3424d44..c0395d54aadc 100644
+--- a/mm/slab_common.c
++++ b/mm/slab_common.c
+@@ -228,7 +228,7 @@ struct kmem_cache *find_mergeable(size_t size, size_t align,
+ {
+ struct kmem_cache *s;
+
+- if (slab_nomerge || (flags & SLAB_NEVER_MERGE))
++ if (slab_nomerge)
+ return NULL;
+
+ if (ctor)
+@@ -239,6 +239,9 @@ struct kmem_cache *find_mergeable(size_t size, size_t align,
+ size = ALIGN(size, align);
+ flags = kmem_cache_flags(size, flags, name, NULL);
+
++ if (flags & SLAB_NEVER_MERGE)
++ return NULL;
++
+ list_for_each_entry_reverse(s, &slab_caches, list) {
+ if (slab_unmergeable(s))
+ continue;
+diff --git a/net/compat.c b/net/compat.c
+index 5cfd26a0006f..0ccf3ecf6bbb 100644
+--- a/net/compat.c
++++ b/net/compat.c
+@@ -22,6 +22,7 @@
+ #include <linux/filter.h>
+ #include <linux/compat.h>
+ #include <linux/security.h>
++#include <linux/audit.h>
+ #include <linux/export.h>
+
+ #include <net/scm.h>
+@@ -767,14 +768,24 @@ COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
+
+ COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
+ {
+- int ret;
+- u32 a[6];
++ u32 a[AUDITSC_ARGS];
++ unsigned int len;
+ u32 a0, a1;
++ int ret;
+
+ if (call < SYS_SOCKET || call > SYS_SENDMMSG)
+ return -EINVAL;
+- if (copy_from_user(a, args, nas[call]))
++ len = nas[call];
++ if (len > sizeof(a))
++ return -EINVAL;
++
++ if (copy_from_user(a, args, len))
+ return -EFAULT;
++
++ ret = audit_socketcall_compat(len / sizeof(a[0]), a);
++ if (ret)
++ return ret;
++
+ a0 = a[0];
+ a1 = a[1];
+
+diff --git a/net/core/dev.c b/net/core/dev.c
+index bb711e5e345b..5d94dadb8df9 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -2284,6 +2284,9 @@ void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason)
+ {
+ unsigned long flags;
+
++ if (unlikely(!skb))
++ return;
++
+ if (likely(atomic_read(&skb->users) == 1)) {
+ smp_rmb();
+ atomic_set(&skb->users, 0);
+diff --git a/net/core/sock.c b/net/core/sock.c
+index 1b70ed7015cb..e369262ea57e 100644
+--- a/net/core/sock.c
++++ b/net/core/sock.c
+@@ -1497,6 +1497,8 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
+
+ sock_copy(newsk, sk);
+
++ newsk->sk_prot_creator = sk->sk_prot;
++
+ /* SANITY */
+ get_net(sock_net(newsk));
+ sk_node_init(&newsk->sk_node);
+diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
+index 0c152087ca15..eaa50d69b607 100644
+--- a/net/ipv4/ip_vti.c
++++ b/net/ipv4/ip_vti.c
+@@ -156,6 +156,7 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
+ struct ip_tunnel_parm *parms = &tunnel->parms;
+ struct dst_entry *dst = skb_dst(skb);
+ struct net_device *tdev; /* Device to other host */
++ int pkt_len = skb->len;
+ int err;
+
+ if (!dst) {
+@@ -199,7 +200,7 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
+
+ err = dst_output(skb);
+ if (net_xmit_eval(err) == 0)
+- err = skb->len;
++ err = pkt_len;
+ iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
+ return NETDEV_TX_OK;
+
+diff --git a/net/ipv4/netfilter/nf_nat_snmp_basic.c b/net/ipv4/netfilter/nf_nat_snmp_basic.c
+index 7c676671329d..cc626e1b06d3 100644
+--- a/net/ipv4/netfilter/nf_nat_snmp_basic.c
++++ b/net/ipv4/netfilter/nf_nat_snmp_basic.c
+@@ -1304,6 +1304,7 @@ static int __init nf_nat_snmp_basic_init(void)
+ static void __exit nf_nat_snmp_basic_fini(void)
+ {
+ RCU_INIT_POINTER(nf_nat_snmp_hook, NULL);
++ synchronize_rcu();
+ nf_conntrack_helper_unregister(&snmp_trap_helper);
+ }
+
+diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
+index 0224c032dca5..6ac448d8dd76 100644
+--- a/net/ipv6/ip6_vti.c
++++ b/net/ipv6/ip6_vti.c
+@@ -434,6 +434,7 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
+ struct dst_entry *dst = skb_dst(skb);
+ struct net_device *tdev;
+ struct xfrm_state *x;
++ int pkt_len = skb->len;
+ int err = -1;
+ int mtu;
+
+@@ -487,7 +488,7 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
+ struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
+
+ u64_stats_update_begin(&tstats->syncp);
+- tstats->tx_bytes += skb->len;
++ tstats->tx_bytes += pkt_len;
+ tstats->tx_packets++;
+ u64_stats_update_end(&tstats->syncp);
+ } else {
+diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
+index 2c1d77bc6979..a6842f1ad3ac 100644
+--- a/net/ipv6/udp.c
++++ b/net/ipv6/udp.c
+@@ -1003,6 +1003,7 @@ static void udp6_hwcsum_outgoing(struct sock *sk, struct sk_buff *skb,
+ */
+ offset = skb_transport_offset(skb);
+ skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
++ csum = skb->csum;
+
+ skb->ip_summed = CHECKSUM_NONE;
+
+diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
+index cd0a5903376c..8a1d1542eb2f 100644
+--- a/net/l2tp/l2tp_core.c
++++ b/net/l2tp/l2tp_core.c
+@@ -1321,6 +1321,9 @@ static void l2tp_tunnel_del_work(struct work_struct *work)
+ struct sock *sk = NULL;
+
+ tunnel = container_of(work, struct l2tp_tunnel, del_work);
++
++ l2tp_tunnel_closeall(tunnel);
++
+ sk = l2tp_tunnel_sock_lookup(tunnel);
+ if (!sk)
+ goto out;
+@@ -1643,15 +1646,12 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_create);
+
+ /* This function is used by the netlink TUNNEL_DELETE command.
+ */
+-int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel)
++void l2tp_tunnel_delete(struct l2tp_tunnel *tunnel)
+ {
+- l2tp_tunnel_inc_refcount(tunnel);
+- l2tp_tunnel_closeall(tunnel);
+- if (false == queue_work(l2tp_wq, &tunnel->del_work)) {
+- l2tp_tunnel_dec_refcount(tunnel);
+- return 1;
++ if (!test_and_set_bit(0, &tunnel->dead)) {
++ l2tp_tunnel_inc_refcount(tunnel);
++ queue_work(l2tp_wq, &tunnel->del_work);
+ }
+- return 0;
+ }
+ EXPORT_SYMBOL_GPL(l2tp_tunnel_delete);
+
+diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
+index cfb50c2acbd9..d23b760d7f35 100644
+--- a/net/l2tp/l2tp_core.h
++++ b/net/l2tp/l2tp_core.h
+@@ -169,6 +169,9 @@ struct l2tp_tunnel_cfg {
+
+ struct l2tp_tunnel {
+ int magic; /* Should be L2TP_TUNNEL_MAGIC */
++
++ unsigned long dead;
++
+ struct rcu_head rcu;
+ rwlock_t hlist_lock; /* protect session_hlist */
+ struct hlist_head session_hlist[L2TP_HASH_SIZE];
+@@ -253,7 +256,7 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id,
+ u32 peer_tunnel_id, struct l2tp_tunnel_cfg *cfg,
+ struct l2tp_tunnel **tunnelp);
+ void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel);
+-int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel);
++void l2tp_tunnel_delete(struct l2tp_tunnel *tunnel);
+ struct l2tp_session *l2tp_session_create(int priv_size,
+ struct l2tp_tunnel *tunnel,
+ u32 session_id, u32 peer_session_id,
+diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
+index 683f0e3cb124..d97a8131b6de 100644
+--- a/net/mac80211/offchannel.c
++++ b/net/mac80211/offchannel.c
+@@ -469,6 +469,8 @@ void ieee80211_roc_purge(struct ieee80211_local *local,
+ struct ieee80211_roc_work *roc, *tmp;
+ LIST_HEAD(tmp_list);
+
++ flush_work(&local->hw_roc_start);
++
+ mutex_lock(&local->mtx);
+ list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
+ if (sdata && roc->sdata != sdata)
+diff --git a/net/netfilter/nf_conntrack_ecache.c b/net/netfilter/nf_conntrack_ecache.c
+index 4e78c57b818f..f3b92ce463b0 100644
+--- a/net/netfilter/nf_conntrack_ecache.c
++++ b/net/netfilter/nf_conntrack_ecache.c
+@@ -200,6 +200,7 @@ void nf_conntrack_unregister_notifier(struct net *net,
+ BUG_ON(notify != new);
+ RCU_INIT_POINTER(net->ct.nf_conntrack_event_cb, NULL);
+ mutex_unlock(&nf_ct_ecache_mutex);
++ /* synchronize_rcu() is called from ctnetlink_exit. */
+ }
+ EXPORT_SYMBOL_GPL(nf_conntrack_unregister_notifier);
+
+@@ -236,6 +237,7 @@ void nf_ct_expect_unregister_notifier(struct net *net,
+ BUG_ON(notify != new);
+ RCU_INIT_POINTER(net->ct.nf_expect_event_cb, NULL);
+ mutex_unlock(&nf_ct_ecache_mutex);
++ /* synchronize_rcu() is called from ctnetlink_exit. */
+ }
+ EXPORT_SYMBOL_GPL(nf_ct_expect_unregister_notifier);
+
+diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
+index b45a4223cb05..4f4c88d70a8f 100644
+--- a/net/netfilter/nf_conntrack_expect.c
++++ b/net/netfilter/nf_conntrack_expect.c
+@@ -392,7 +392,7 @@ static inline int __nf_ct_expect_check(struct nf_conntrack_expect *expect)
+ struct net *net = nf_ct_exp_net(expect);
+ struct hlist_node *next;
+ unsigned int h;
+- int ret = 1;
++ int ret = 0;
+
+ if (!master_help) {
+ ret = -ESHUTDOWN;
+@@ -442,7 +442,7 @@ int nf_ct_expect_related_report(struct nf_conntrack_expect *expect,
+
+ spin_lock_bh(&nf_conntrack_expect_lock);
+ ret = __nf_ct_expect_check(expect);
+- if (ret <= 0)
++ if (ret < 0)
+ goto out;
+
+ ret = nf_ct_expect_insert(expect);
+diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
+index b6e939a8b099..c0e64d15cf34 100644
+--- a/net/netfilter/nf_conntrack_netlink.c
++++ b/net/netfilter/nf_conntrack_netlink.c
+@@ -3281,6 +3281,7 @@ static void __exit ctnetlink_exit(void)
+ #ifdef CONFIG_NETFILTER_NETLINK_QUEUE_CT
+ RCU_INIT_POINTER(nfq_ct_hook, NULL);
+ #endif
++ synchronize_rcu();
+ }
+
+ module_init(ctnetlink_init);
+diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
+index 4e0b47831d43..56e175efb66e 100644
+--- a/net/netfilter/nf_nat_core.c
++++ b/net/netfilter/nf_nat_core.c
+@@ -888,6 +888,8 @@ static void __exit nf_nat_cleanup(void)
+ #ifdef CONFIG_XFRM
+ RCU_INIT_POINTER(nf_nat_decode_session_hook, NULL);
+ #endif
++ synchronize_rcu();
++
+ for (i = 0; i < NFPROTO_NUMPROTO; i++)
+ kfree(nf_nat_l4protos[i]);
+ synchronize_net();
+diff --git a/net/netfilter/nfnetlink_cthelper.c b/net/netfilter/nfnetlink_cthelper.c
+index 54330fb5efaf..6d10002d23f8 100644
+--- a/net/netfilter/nfnetlink_cthelper.c
++++ b/net/netfilter/nfnetlink_cthelper.c
+@@ -161,6 +161,7 @@ nfnl_cthelper_parse_expect_policy(struct nf_conntrack_helper *helper,
+ int i, ret;
+ struct nf_conntrack_expect_policy *expect_policy;
+ struct nlattr *tb[NFCTH_POLICY_SET_MAX+1];
++ unsigned int class_max;
+
+ ret = nla_parse_nested(tb, NFCTH_POLICY_SET_MAX, attr,
+ nfnl_cthelper_expect_policy_set);
+@@ -170,19 +171,18 @@ nfnl_cthelper_parse_expect_policy(struct nf_conntrack_helper *helper,
+ if (!tb[NFCTH_POLICY_SET_NUM])
+ return -EINVAL;
+
+- helper->expect_class_max =
+- ntohl(nla_get_be32(tb[NFCTH_POLICY_SET_NUM]));
+-
+- if (helper->expect_class_max != 0 &&
+- helper->expect_class_max > NF_CT_MAX_EXPECT_CLASSES)
++ class_max = ntohl(nla_get_be32(tb[NFCTH_POLICY_SET_NUM]));
++ if (class_max == 0)
++ return -EINVAL;
++ if (class_max > NF_CT_MAX_EXPECT_CLASSES)
+ return -EOVERFLOW;
+
+ expect_policy = kzalloc(sizeof(struct nf_conntrack_expect_policy) *
+- helper->expect_class_max, GFP_KERNEL);
++ class_max, GFP_KERNEL);
+ if (expect_policy == NULL)
+ return -ENOMEM;
+
+- for (i=0; i<helper->expect_class_max; i++) {
++ for (i = 0; i < class_max; i++) {
+ if (!tb[NFCTH_POLICY_SET+i])
+ goto err;
+
+@@ -191,6 +191,8 @@ nfnl_cthelper_parse_expect_policy(struct nf_conntrack_helper *helper,
+ if (ret < 0)
+ goto err;
+ }
++
++ helper->expect_class_max = class_max - 1;
+ helper->expect_policy = expect_policy;
+ return 0;
+ err:
+@@ -377,10 +379,10 @@ nfnl_cthelper_dump_policy(struct sk_buff *skb,
+ goto nla_put_failure;
+
+ if (nla_put_be32(skb, NFCTH_POLICY_SET_NUM,
+- htonl(helper->expect_class_max)))
++ htonl(helper->expect_class_max + 1)))
+ goto nla_put_failure;
+
+- for (i=0; i<helper->expect_class_max; i++) {
++ for (i = 0; i < helper->expect_class_max + 1; i++) {
+ nest_parms2 = nla_nest_start(skb,
+ (NFCTH_POLICY_SET+i) | NLA_F_NESTED);
+ if (nest_parms2 == NULL)
+diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c
+index 476accd17145..3dfe3b7271e4 100644
+--- a/net/netfilter/nfnetlink_cttimeout.c
++++ b/net/netfilter/nfnetlink_cttimeout.c
+@@ -578,6 +578,7 @@ static void __exit cttimeout_exit(void)
+ #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
+ RCU_INIT_POINTER(nf_ct_timeout_find_get_hook, NULL);
+ RCU_INIT_POINTER(nf_ct_timeout_put_hook, NULL);
++ synchronize_rcu();
+ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
+ }
+
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index c29070c27073..4cd7e27e3fc4 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -2694,13 +2694,15 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex,
+ int ret = 0;
+ bool unlisted = false;
+
+- if (po->fanout)
+- return -EINVAL;
+-
+ lock_sock(sk);
+ spin_lock(&po->bind_lock);
+ rcu_read_lock();
+
++ if (po->fanout) {
++ ret = -EINVAL;
++ goto out_unlock;
++ }
++
+ if (name) {
+ dev = dev_get_by_name_rcu(sock_net(sk), name);
+ if (!dev) {
+@@ -3542,6 +3544,8 @@ static int packet_getsockopt(struct socket *sock, int level, int optname,
+ case PACKET_HDRLEN:
+ if (len > sizeof(int))
+ len = sizeof(int);
++ if (len < sizeof(int))
++ return -EINVAL;
+ if (copy_from_user(&val, optval, len))
+ return -EFAULT;
+ switch (val) {
+diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
+index 8a09ee7db3c1..920b39572edd 100644
+--- a/net/rds/ib_cm.c
++++ b/net/rds/ib_cm.c
+@@ -307,7 +307,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ ret = PTR_ERR(ic->i_send_cq);
+ ic->i_send_cq = NULL;
+ rdsdebug("ib_create_cq send failed: %d\n", ret);
+- goto out;
++ goto rds_ibdev_out;
+ }
+
+ ic->i_recv_cq = ib_create_cq(dev, rds_ib_recv_cq_comp_handler,
+@@ -317,19 +317,19 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ ret = PTR_ERR(ic->i_recv_cq);
+ ic->i_recv_cq = NULL;
+ rdsdebug("ib_create_cq recv failed: %d\n", ret);
+- goto out;
++ goto send_cq_out;
+ }
+
+ ret = ib_req_notify_cq(ic->i_send_cq, IB_CQ_NEXT_COMP);
+ if (ret) {
+ rdsdebug("ib_req_notify_cq send failed: %d\n", ret);
+- goto out;
++ goto recv_cq_out;
+ }
+
+ ret = ib_req_notify_cq(ic->i_recv_cq, IB_CQ_SOLICITED);
+ if (ret) {
+ rdsdebug("ib_req_notify_cq recv failed: %d\n", ret);
+- goto out;
++ goto recv_cq_out;
+ }
+
+ /* XXX negotiate max send/recv with remote? */
+@@ -353,7 +353,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ ret = rdma_create_qp(ic->i_cm_id, ic->i_pd, &attr);
+ if (ret) {
+ rdsdebug("rdma_create_qp failed: %d\n", ret);
+- goto out;
++ goto recv_cq_out;
+ }
+
+ ic->i_send_hdrs = ib_dma_alloc_coherent(dev,
+@@ -363,7 +363,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ if (!ic->i_send_hdrs) {
+ ret = -ENOMEM;
+ rdsdebug("ib_dma_alloc_coherent send failed\n");
+- goto out;
++ goto qp_out;
+ }
+
+ ic->i_recv_hdrs = ib_dma_alloc_coherent(dev,
+@@ -373,7 +373,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ if (!ic->i_recv_hdrs) {
+ ret = -ENOMEM;
+ rdsdebug("ib_dma_alloc_coherent recv failed\n");
+- goto out;
++ goto send_hdrs_dma_out;
+ }
+
+ ic->i_ack = ib_dma_alloc_coherent(dev, sizeof(struct rds_header),
+@@ -381,7 +381,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ if (!ic->i_ack) {
+ ret = -ENOMEM;
+ rdsdebug("ib_dma_alloc_coherent ack failed\n");
+- goto out;
++ goto recv_hdrs_dma_out;
+ }
+
+ ic->i_sends = vzalloc_node(ic->i_send_ring.w_nr * sizeof(struct rds_ib_send_work),
+@@ -389,7 +389,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ if (!ic->i_sends) {
+ ret = -ENOMEM;
+ rdsdebug("send allocation failed\n");
+- goto out;
++ goto ack_dma_out;
+ }
+
+ ic->i_recvs = vzalloc_node(ic->i_recv_ring.w_nr * sizeof(struct rds_ib_recv_work),
+@@ -397,7 +397,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ if (!ic->i_recvs) {
+ ret = -ENOMEM;
+ rdsdebug("recv allocation failed\n");
+- goto out;
++ goto sends_out;
+ }
+
+ rds_ib_recv_init_ack(ic);
+@@ -405,8 +405,33 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
+ rdsdebug("conn %p pd %p mr %p cq %p %p\n", conn, ic->i_pd, ic->i_mr,
+ ic->i_send_cq, ic->i_recv_cq);
+
+-out:
++ return ret;
++
++sends_out:
++ vfree(ic->i_sends);
++ack_dma_out:
++ ib_dma_free_coherent(dev, sizeof(struct rds_header),
++ ic->i_ack, ic->i_ack_dma);
++recv_hdrs_dma_out:
++ ib_dma_free_coherent(dev, ic->i_recv_ring.w_nr *
++ sizeof(struct rds_header),
++ ic->i_recv_hdrs, ic->i_recv_hdrs_dma);
++send_hdrs_dma_out:
++ ib_dma_free_coherent(dev, ic->i_send_ring.w_nr *
++ sizeof(struct rds_header),
++ ic->i_send_hdrs, ic->i_send_hdrs_dma);
++qp_out:
++ rdma_destroy_qp(ic->i_cm_id);
++recv_cq_out:
++ if (!ib_destroy_cq(ic->i_recv_cq))
++ ic->i_recv_cq = NULL;
++send_cq_out:
++ if (!ib_destroy_cq(ic->i_send_cq))
++ ic->i_send_cq = NULL;
++rds_ibdev_out:
++ rds_ib_remove_conn(rds_ibdev, conn);
+ rds_ib_dev_put(rds_ibdev);
++
+ return ret;
+ }
+
+diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c
+index bd3825d38abc..716d0b4d4834 100644
+--- a/net/rds/ib_send.c
++++ b/net/rds/ib_send.c
+@@ -102,16 +102,6 @@ static void rds_ib_send_complete(struct rds_message *rm,
+ complete(rm, notify_status);
+ }
+
+-static void rds_ib_send_unmap_data(struct rds_ib_connection *ic,
+- struct rm_data_op *op,
+- int wc_status)
+-{
+- if (op->op_nents)
+- ib_dma_unmap_sg(ic->i_cm_id->device,
+- op->op_sg, op->op_nents,
+- DMA_TO_DEVICE);
+-}
+-
+ static void rds_ib_send_unmap_rdma(struct rds_ib_connection *ic,
+ struct rm_rdma_op *op,
+ int wc_status)
+@@ -172,6 +162,21 @@ static void rds_ib_send_unmap_atomic(struct rds_ib_connection *ic,
+ rds_ib_stats_inc(s_ib_atomic_fadd);
+ }
+
++static void rds_ib_send_unmap_data(struct rds_ib_connection *ic,
++ struct rm_data_op *op,
++ int wc_status)
++{
++ struct rds_message *rm = container_of(op, struct rds_message, data);
++
++ if (op->op_nents)
++ ib_dma_unmap_sg(ic->i_cm_id->device,
++ op->op_sg, op->op_nents,
++ DMA_TO_DEVICE);
++
++ if (rm->rdma.op_active && rm->data.op_notify)
++ rds_ib_send_unmap_rdma(ic, &rm->rdma, wc_status);
++}
++
+ /*
+ * Unmap the resources associated with a struct send_work.
+ *
+diff --git a/net/rds/rdma.c b/net/rds/rdma.c
+index 40084d843e9f..3738b1920c09 100644
+--- a/net/rds/rdma.c
++++ b/net/rds/rdma.c
+@@ -625,6 +625,16 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
+ }
+ op->op_notifier->n_user_token = args->user_token;
+ op->op_notifier->n_status = RDS_RDMA_SUCCESS;
++
++ /* Enable rmda notification on data operation for composite
++ * rds messages and make sure notification is enabled only
++ * for the data operation which follows it so that application
++ * gets notified only after full message gets delivered.
++ */
++ if (rm->data.op_sg) {
++ rm->rdma.op_notify = 0;
++ rm->data.op_notify = !!(args->flags & RDS_RDMA_NOTIFY_ME);
++ }
+ }
+
+ /* The cookie contains the R_Key of the remote memory region, and
+diff --git a/net/rds/rds.h b/net/rds/rds.h
+index 0d41155a2258..af68d5941d5f 100644
+--- a/net/rds/rds.h
++++ b/net/rds/rds.h
+@@ -361,6 +361,7 @@ struct rds_message {
+ } rdma;
+ struct rm_data_op {
+ unsigned int op_active:1;
++ unsigned int op_notify:1;
+ unsigned int op_nents;
+ unsigned int op_count;
+ struct scatterlist *op_sg;
+diff --git a/net/rds/send.c b/net/rds/send.c
+index 7b30c0f3180d..eba0eaf4cc38 100644
+--- a/net/rds/send.c
++++ b/net/rds/send.c
+@@ -454,12 +454,14 @@ void rds_rdma_send_complete(struct rds_message *rm, int status)
+ struct rm_rdma_op *ro;
+ struct rds_notifier *notifier;
+ unsigned long flags;
++ unsigned int notify = 0;
+
+ spin_lock_irqsave(&rm->m_rs_lock, flags);
+
++ notify = rm->rdma.op_notify | rm->data.op_notify;
+ ro = &rm->rdma;
+ if (test_bit(RDS_MSG_ON_SOCK, &rm->m_flags) &&
+- ro->op_active && ro->op_notify && ro->op_notifier) {
++ ro->op_active && notify && ro->op_notifier) {
+ notifier = ro->op_notifier;
+ rs = rm->m_rs;
+ sock_hold(rds_rs_to_sk(rs));
+diff --git a/net/tipc/msg.c b/net/tipc/msg.c
+index e9333147d6f1..7c7ec95459f6 100644
+--- a/net/tipc/msg.c
++++ b/net/tipc/msg.c
+@@ -525,7 +525,7 @@ bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb,
+ return false;
+ if (msg_errcode(msg))
+ return false;
+- *err = -TIPC_ERR_NO_NAME;
++ *err = TIPC_ERR_NO_NAME;
+ if (skb_linearize(skb))
+ return false;
+ if (msg_reroute_cnt(msg))
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index e81e20cbe6dd..acb4ccf448ba 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -9605,6 +9605,9 @@ static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
+ if (err)
+ return err;
+
++ if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
++ !tb[NL80211_REKEY_DATA_KCK])
++ return -EINVAL;
+ if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
+ return -ERANGE;
+ if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
+diff --git a/security/keys/internal.h b/security/keys/internal.h
+index 5105c2c2da75..51ffb9cde073 100644
+--- a/security/keys/internal.h
++++ b/security/keys/internal.h
+@@ -136,7 +136,7 @@ extern key_ref_t keyring_search_aux(key_ref_t keyring_ref,
+ extern key_ref_t search_my_process_keyrings(struct keyring_search_context *ctx);
+ extern key_ref_t search_process_keyrings(struct keyring_search_context *ctx);
+
+-extern struct key *find_keyring_by_name(const char *name, bool skip_perm_check);
++extern struct key *find_keyring_by_name(const char *name, bool uid_keyring);
+
+ extern int install_user_keyrings(void);
+ extern int install_thread_keyring_to_cred(struct cred *);
+diff --git a/security/keys/key.c b/security/keys/key.c
+index 72ed9be9da28..c50a926cea54 100644
+--- a/security/keys/key.c
++++ b/security/keys/key.c
+@@ -296,6 +296,8 @@ struct key *key_alloc(struct key_type *type, const char *desc,
+ key->flags |= 1 << KEY_FLAG_IN_QUOTA;
+ if (flags & KEY_ALLOC_TRUSTED)
+ key->flags |= 1 << KEY_FLAG_TRUSTED;
++ if (flags & KEY_ALLOC_UID_KEYRING)
++ key->flags |= 1 << KEY_FLAG_UID_KEYRING;
+
+ #ifdef KEY_DEBUGGING
+ key->magic = KEY_DEBUG_MAGIC;
+@@ -905,6 +907,16 @@ error:
+ */
+ __key_link_end(keyring, &index_key, edit);
+
++ key = key_ref_to_ptr(key_ref);
++ if (test_bit(KEY_FLAG_USER_CONSTRUCT, &key->flags)) {
++ ret = wait_for_key_construction(key, true);
++ if (ret < 0) {
++ key_ref_put(key_ref);
++ key_ref = ERR_PTR(ret);
++ goto error_free_prep;
++ }
++ }
++
+ key_ref = __key_update(key_ref, &prep);
+ goto error_free_prep;
+ }
+diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
+index 0be918844c1e..a2d29cca16c6 100644
+--- a/security/keys/keyctl.c
++++ b/security/keys/keyctl.c
+@@ -744,6 +744,11 @@ long keyctl_read_key(key_serial_t keyid, char __user *buffer, size_t buflen)
+
+ key = key_ref_to_ptr(key_ref);
+
++ if (test_bit(KEY_FLAG_NEGATIVE, &key->flags)) {
++ ret = -ENOKEY;
++ goto error2;
++ }
++
+ /* see if we can read it directly */
+ ret = key_permission(key_ref, KEY_NEED_READ);
+ if (ret == 0)
+diff --git a/security/keys/keyring.c b/security/keys/keyring.c
+index d33437007ad2..6d913f40b6f0 100644
+--- a/security/keys/keyring.c
++++ b/security/keys/keyring.c
+@@ -416,7 +416,7 @@ static void keyring_describe(const struct key *keyring, struct seq_file *m)
+ }
+
+ struct keyring_read_iterator_context {
+- size_t qty;
++ size_t buflen;
+ size_t count;
+ key_serial_t __user *buffer;
+ };
+@@ -428,9 +428,9 @@ static int keyring_read_iterator(const void *object, void *data)
+ int ret;
+
+ kenter("{%s,%d},,{%zu/%zu}",
+- key->type->name, key->serial, ctx->count, ctx->qty);
++ key->type->name, key->serial, ctx->count, ctx->buflen);
+
+- if (ctx->count >= ctx->qty)
++ if (ctx->count >= ctx->buflen)
+ return 1;
+
+ ret = put_user(key->serial, ctx->buffer);
+@@ -465,16 +465,12 @@ static long keyring_read(const struct key *keyring,
+ return 0;
+
+ /* Calculate how much data we could return */
+- ctx.qty = nr_keys * sizeof(key_serial_t);
+-
+ if (!buffer || !buflen)
+- return ctx.qty;
+-
+- if (buflen > ctx.qty)
+- ctx.qty = buflen;
++ return nr_keys * sizeof(key_serial_t);
+
+ /* Copy the IDs of the subscribed keys into the buffer */
+ ctx.buffer = (key_serial_t __user *)buffer;
++ ctx.buflen = buflen;
+ ctx.count = 0;
+ ret = assoc_array_iterate(&keyring->keys, keyring_read_iterator, &ctx);
+ if (ret < 0) {
+@@ -965,15 +961,15 @@ found:
+ /*
+ * Find a keyring with the specified name.
+ *
+- * All named keyrings in the current user namespace are searched, provided they
+- * grant Search permission directly to the caller (unless this check is
+- * skipped). Keyrings whose usage points have reached zero or who have been
+- * revoked are skipped.
++ * Only keyrings that have nonzero refcount, are not revoked, and are owned by a
++ * user in the current user namespace are considered. If @uid_keyring is %true,
++ * the keyring additionally must have been allocated as a user or user session
++ * keyring; otherwise, it must grant Search permission directly to the caller.
+ *
+ * Returns a pointer to the keyring with the keyring's refcount having being
+ * incremented on success. -ENOKEY is returned if a key could not be found.
+ */
+-struct key *find_keyring_by_name(const char *name, bool skip_perm_check)
++struct key *find_keyring_by_name(const char *name, bool uid_keyring)
+ {
+ struct key *keyring;
+ int bucket;
+@@ -1001,10 +997,15 @@ struct key *find_keyring_by_name(const char *name, bool skip_perm_check)
+ if (strcmp(keyring->description, name) != 0)
+ continue;
+
+- if (!skip_perm_check &&
+- key_permission(make_key_ref(keyring, 0),
+- KEY_NEED_SEARCH) < 0)
+- continue;
++ if (uid_keyring) {
++ if (!test_bit(KEY_FLAG_UID_KEYRING,
++ &keyring->flags))
++ continue;
++ } else {
++ if (key_permission(make_key_ref(keyring, 0),
++ KEY_NEED_SEARCH) < 0)
++ continue;
++ }
+
+ /* we've got a match but we might end up racing with
+ * key_cleanup() if the keyring is currently 'dead'
+diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
+index 162077db5f81..85b61a3ac981 100644
+--- a/security/keys/process_keys.c
++++ b/security/keys/process_keys.c
+@@ -76,7 +76,9 @@ int install_user_keyrings(void)
+ if (IS_ERR(uid_keyring)) {
+ uid_keyring = keyring_alloc(buf, user->uid, INVALID_GID,
+ cred, user_keyring_perm,
+- KEY_ALLOC_IN_QUOTA, NULL);
++ KEY_ALLOC_UID_KEYRING |
++ KEY_ALLOC_IN_QUOTA,
++ NULL);
+ if (IS_ERR(uid_keyring)) {
+ ret = PTR_ERR(uid_keyring);
+ goto error;
+@@ -92,7 +94,9 @@ int install_user_keyrings(void)
+ session_keyring =
+ keyring_alloc(buf, user->uid, INVALID_GID,
+ cred, user_keyring_perm,
+- KEY_ALLOC_IN_QUOTA, NULL);
++ KEY_ALLOC_UID_KEYRING |
++ KEY_ALLOC_IN_QUOTA,
++ NULL);
+ if (IS_ERR(session_keyring)) {
+ ret = PTR_ERR(session_keyring);
+ goto error_release;
+diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
+index e45f0a3df127..10c0d33afdba 100644
+--- a/security/smack/smack_lsm.c
++++ b/security/smack/smack_lsm.c
+@@ -1271,7 +1271,7 @@ static int smack_inode_removexattr(struct dentry *dentry, const char *name)
+ * @inode: the object
+ * @name: attribute name
+ * @buffer: where to put the result
+- * @alloc: unused
++ * @alloc: duplicate memory
+ *
+ * Returns the size of the attribute or an error code
+ */
+@@ -1284,43 +1284,38 @@ static int smack_inode_getsecurity(const struct inode *inode,
+ struct super_block *sbp;
+ struct inode *ip = (struct inode *)inode;
+ struct smack_known *isp;
+- int ilen;
+- int rc = 0;
+
+- if (strcmp(name, XATTR_SMACK_SUFFIX) == 0) {
++ if (strcmp(name, XATTR_SMACK_SUFFIX) == 0)
+ isp = smk_of_inode(inode);
+- ilen = strlen(isp->smk_known);
+- *buffer = isp->smk_known;
+- return ilen;
+- }
++ else {
++ /*
++ * The rest of the Smack xattrs are only on sockets.
++ */
++ sbp = ip->i_sb;
++ if (sbp->s_magic != SOCKFS_MAGIC)
++ return -EOPNOTSUPP;
+
+- /*
+- * The rest of the Smack xattrs are only on sockets.
+- */
+- sbp = ip->i_sb;
+- if (sbp->s_magic != SOCKFS_MAGIC)
+- return -EOPNOTSUPP;
++ sock = SOCKET_I(ip);
++ if (sock == NULL || sock->sk == NULL)
++ return -EOPNOTSUPP;
+
+- sock = SOCKET_I(ip);
+- if (sock == NULL || sock->sk == NULL)
+- return -EOPNOTSUPP;
+-
+- ssp = sock->sk->sk_security;
++ ssp = sock->sk->sk_security;
+
+- if (strcmp(name, XATTR_SMACK_IPIN) == 0)
+- isp = ssp->smk_in;
+- else if (strcmp(name, XATTR_SMACK_IPOUT) == 0)
+- isp = ssp->smk_out;
+- else
+- return -EOPNOTSUPP;
++ if (strcmp(name, XATTR_SMACK_IPIN) == 0)
++ isp = ssp->smk_in;
++ else if (strcmp(name, XATTR_SMACK_IPOUT) == 0)
++ isp = ssp->smk_out;
++ else
++ return -EOPNOTSUPP;
++ }
+
+- ilen = strlen(isp->smk_known);
+- if (rc == 0) {
+- *buffer = isp->smk_known;
+- rc = ilen;
++ if (alloc) {
++ *buffer = kstrdup(isp->smk_known, GFP_KERNEL);
++ if (*buffer == NULL)
++ return -ENOMEM;
+ }
+
+- return rc;
++ return strlen(isp->smk_known);
+ }
+
+
+diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
+index b554d7f9e3be..6163bf3e8177 100644
+--- a/sound/core/compress_offload.c
++++ b/sound/core/compress_offload.c
+@@ -872,14 +872,13 @@ static const struct file_operations snd_compr_file_ops = {
+ static int snd_compress_dev_register(struct snd_device *device)
+ {
+ int ret = -EINVAL;
+- char str[16];
+ struct snd_compr *compr;
+
+ if (snd_BUG_ON(!device || !device->device_data))
+ return -EBADFD;
+ compr = device->device_data;
+
+- pr_debug("reg %s for device %s, direction %d\n", str, compr->name,
++ pr_debug("reg device %s, direction %d\n", compr->name,
+ compr->direction);
+ /* register compressed device */
+ ret = snd_register_device(SNDRV_DEVICE_TYPE_COMPRESS,
+diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
+index b6f5f47048ba..5d2d3d63abcf 100644
+--- a/sound/core/seq/seq_clientmgr.c
++++ b/sound/core/seq/seq_clientmgr.c
+@@ -1260,6 +1260,7 @@ static int snd_seq_ioctl_create_port(struct snd_seq_client *client,
+ struct snd_seq_client_port *port;
+ struct snd_seq_port_info info;
+ struct snd_seq_port_callback *callback;
++ int port_idx;
+
+ if (copy_from_user(&info, arg, sizeof(info)))
+ return -EFAULT;
+@@ -1273,7 +1274,9 @@ static int snd_seq_ioctl_create_port(struct snd_seq_client *client,
+ return -ENOMEM;
+
+ if (client->type == USER_CLIENT && info.kernel) {
+- snd_seq_delete_port(client, port->addr.port);
++ port_idx = port->addr.port;
++ snd_seq_port_unlock(port);
++ snd_seq_delete_port(client, port_idx);
+ return -EINVAL;
+ }
+ if (client->type == KERNEL_CLIENT) {
+@@ -1294,6 +1297,7 @@ static int snd_seq_ioctl_create_port(struct snd_seq_client *client,
+
+ snd_seq_set_port_info(port, &info);
+ snd_seq_system_client_ev_port_start(port->addr.client, port->addr.port);
++ snd_seq_port_unlock(port);
+
+ if (copy_to_user(arg, &info, sizeof(info)))
+ return -EFAULT;
+diff --git a/sound/core/seq/seq_lock.c b/sound/core/seq/seq_lock.c
+index 12ba83367b1b..ba5752ee9af3 100644
+--- a/sound/core/seq/seq_lock.c
++++ b/sound/core/seq/seq_lock.c
+@@ -23,8 +23,6 @@
+ #include <sound/core.h>
+ #include "seq_lock.h"
+
+-#if defined(CONFIG_SMP) || defined(CONFIG_SND_DEBUG)
+-
+ /* wait until all locks are released */
+ void snd_use_lock_sync_helper(snd_use_lock_t *lockp, const char *file, int line)
+ {
+@@ -42,5 +40,3 @@ void snd_use_lock_sync_helper(snd_use_lock_t *lockp, const char *file, int line)
+ }
+
+ EXPORT_SYMBOL(snd_use_lock_sync_helper);
+-
+-#endif
+diff --git a/sound/core/seq/seq_lock.h b/sound/core/seq/seq_lock.h
+index 54044bc2c9ef..ac38031c370e 100644
+--- a/sound/core/seq/seq_lock.h
++++ b/sound/core/seq/seq_lock.h
+@@ -3,8 +3,6 @@
+
+ #include <linux/sched.h>
+
+-#if defined(CONFIG_SMP) || defined(CONFIG_SND_DEBUG)
+-
+ typedef atomic_t snd_use_lock_t;
+
+ /* initialize lock */
+@@ -20,14 +18,4 @@ typedef atomic_t snd_use_lock_t;
+ void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line);
+ #define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__)
+
+-#else /* SMP || CONFIG_SND_DEBUG */
+-
+-typedef spinlock_t snd_use_lock_t; /* dummy */
+-#define snd_use_lock_init(lockp) /**/
+-#define snd_use_lock_use(lockp) /**/
+-#define snd_use_lock_free(lockp) /**/
+-#define snd_use_lock_sync(lockp) /**/
+-
+-#endif /* SMP || CONFIG_SND_DEBUG */
+-
+ #endif /* __SND_SEQ_LOCK_H */
+diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c
+index fe686ee41c6d..f04714d70bf7 100644
+--- a/sound/core/seq/seq_ports.c
++++ b/sound/core/seq/seq_ports.c
+@@ -122,7 +122,9 @@ static void port_subs_info_init(struct snd_seq_port_subs_info *grp)
+ }
+
+
+-/* create a port, port number is returned (-1 on failure) */
++/* create a port, port number is returned (-1 on failure);
++ * the caller needs to unref the port via snd_seq_port_unlock() appropriately
++ */
+ struct snd_seq_client_port *snd_seq_create_port(struct snd_seq_client *client,
+ int port)
+ {
+@@ -151,6 +153,7 @@ struct snd_seq_client_port *snd_seq_create_port(struct snd_seq_client *client,
+ snd_use_lock_init(&new_port->use_lock);
+ port_subs_info_init(&new_port->c_src);
+ port_subs_info_init(&new_port->c_dest);
++ snd_use_lock_use(&new_port->use_lock);
+
+ num = port >= 0 ? port : 0;
+ mutex_lock(&client->ports_mutex);
+@@ -165,9 +168,9 @@ struct snd_seq_client_port *snd_seq_create_port(struct snd_seq_client *client,
+ list_add_tail(&new_port->list, &p->list);
+ client->num_ports++;
+ new_port->addr.port = num; /* store the port number in the port */
++ sprintf(new_port->name, "port-%d", num);
+ write_unlock_irqrestore(&client->ports_lock, flags);
+ mutex_unlock(&client->ports_mutex);
+- sprintf(new_port->name, "port-%d", num);
+
+ return new_port;
+ }
+diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c
+index 81134e067184..3b126af4a026 100644
+--- a/sound/core/seq/seq_virmidi.c
++++ b/sound/core/seq/seq_virmidi.c
+@@ -77,13 +77,17 @@ static void snd_virmidi_init_event(struct snd_virmidi *vmidi,
+ * decode input event and put to read buffer of each opened file
+ */
+ static int snd_virmidi_dev_receive_event(struct snd_virmidi_dev *rdev,
+- struct snd_seq_event *ev)
++ struct snd_seq_event *ev,
++ bool atomic)
+ {
+ struct snd_virmidi *vmidi;
+ unsigned char msg[4];
+ int len;
+
+- read_lock(&rdev->filelist_lock);
++ if (atomic)
++ read_lock(&rdev->filelist_lock);
++ else
++ down_read(&rdev->filelist_sem);
+ list_for_each_entry(vmidi, &rdev->filelist, list) {
+ if (!vmidi->trigger)
+ continue;
+@@ -97,7 +101,10 @@ static int snd_virmidi_dev_receive_event(struct snd_virmidi_dev *rdev,
+ snd_rawmidi_receive(vmidi->substream, msg, len);
+ }
+ }
+- read_unlock(&rdev->filelist_lock);
++ if (atomic)
++ read_unlock(&rdev->filelist_lock);
++ else
++ up_read(&rdev->filelist_sem);
+
+ return 0;
+ }
+@@ -115,7 +122,7 @@ int snd_virmidi_receive(struct snd_rawmidi *rmidi, struct snd_seq_event *ev)
+ struct snd_virmidi_dev *rdev;
+
+ rdev = rmidi->private_data;
+- return snd_virmidi_dev_receive_event(rdev, ev);
++ return snd_virmidi_dev_receive_event(rdev, ev, true);
+ }
+ #endif /* 0 */
+
+@@ -130,7 +137,7 @@ static int snd_virmidi_event_input(struct snd_seq_event *ev, int direct,
+ rdev = private_data;
+ if (!(rdev->flags & SNDRV_VIRMIDI_USE))
+ return 0; /* ignored */
+- return snd_virmidi_dev_receive_event(rdev, ev);
++ return snd_virmidi_dev_receive_event(rdev, ev, atomic);
+ }
+
+ /*
+@@ -209,7 +216,6 @@ static int snd_virmidi_input_open(struct snd_rawmidi_substream *substream)
+ struct snd_virmidi_dev *rdev = substream->rmidi->private_data;
+ struct snd_rawmidi_runtime *runtime = substream->runtime;
+ struct snd_virmidi *vmidi;
+- unsigned long flags;
+
+ vmidi = kzalloc(sizeof(*vmidi), GFP_KERNEL);
+ if (vmidi == NULL)
+@@ -223,9 +229,11 @@ static int snd_virmidi_input_open(struct snd_rawmidi_substream *substream)
+ vmidi->client = rdev->client;
+ vmidi->port = rdev->port;
+ runtime->private_data = vmidi;
+- write_lock_irqsave(&rdev->filelist_lock, flags);
++ down_write(&rdev->filelist_sem);
++ write_lock_irq(&rdev->filelist_lock);
+ list_add_tail(&vmidi->list, &rdev->filelist);
+- write_unlock_irqrestore(&rdev->filelist_lock, flags);
++ write_unlock_irq(&rdev->filelist_lock);
++ up_write(&rdev->filelist_sem);
+ vmidi->rdev = rdev;
+ return 0;
+ }
+@@ -264,9 +272,11 @@ static int snd_virmidi_input_close(struct snd_rawmidi_substream *substream)
+ struct snd_virmidi_dev *rdev = substream->rmidi->private_data;
+ struct snd_virmidi *vmidi = substream->runtime->private_data;
+
++ down_write(&rdev->filelist_sem);
+ write_lock_irq(&rdev->filelist_lock);
+ list_del(&vmidi->list);
+ write_unlock_irq(&rdev->filelist_lock);
++ up_write(&rdev->filelist_sem);
+ snd_midi_event_free(vmidi->parser);
+ substream->runtime->private_data = NULL;
+ kfree(vmidi);
+@@ -520,6 +530,7 @@ int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmi
+ rdev->rmidi = rmidi;
+ rdev->device = device;
+ rdev->client = -1;
++ init_rwsem(&rdev->filelist_sem);
+ rwlock_init(&rdev->filelist_lock);
+ INIT_LIST_HEAD(&rdev->filelist);
+ rdev->seq_mode = SNDRV_VIRMIDI_SEQ_DISPATCH;
+diff --git a/sound/pci/au88x0/au88x0_core.c b/sound/pci/au88x0/au88x0_core.c
+index d3125c169684..065a69cf6118 100644
+--- a/sound/pci/au88x0/au88x0_core.c
++++ b/sound/pci/au88x0/au88x0_core.c
+@@ -2279,6 +2279,9 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
+ } else {
+ int src[2], mix[2];
+
++ if (nr_ch < 1)
++ return -EINVAL;
++
+ /* Get SRC and MIXER hardware resources. */
+ for (i = 0; i < nr_ch; i++) {
+ if ((mix[i] =
+diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
+index 57197bef5f5b..8cd701dbd52c 100644
+--- a/sound/pci/hda/hda_codec.c
++++ b/sound/pci/hda/hda_codec.c
+@@ -1958,7 +1958,7 @@ static int get_kctl_0dB_offset(struct hda_codec *codec,
+ return -1;
+ if (*step_to_check && *step_to_check != step) {
+ codec_err(codec, "Mismatching dB step for vmaster slave (%d!=%d)\n",
+-- *step_to_check, step);
++ *step_to_check, step);
+ return -1;
+ }
+ *step_to_check = step;
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index a0e45ae0a628..55601ce89e0f 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5771,6 +5771,14 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ ALC225_STANDARD_PINS,
+ {0x12, 0xb7a60130},
+ {0x1b, 0x90170110}),
++ SND_HDA_PIN_QUIRK(0x10ec0236, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x12, 0x90a60140},
++ {0x14, 0x90170110},
++ {0x21, 0x02211020}),
++ SND_HDA_PIN_QUIRK(0x10ec0236, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x12, 0x90a60140},
++ {0x14, 0x90170150},
++ {0x21, 0x02211020}),
+ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL2_MIC_NO_PRESENCE,
+ ALC255_STANDARD_PINS,
+ {0x12, 0x40300000},
+diff --git a/sound/usb/caiaq/device.c b/sound/usb/caiaq/device.c
+index b871ba407e4e..4458190149d1 100644
+--- a/sound/usb/caiaq/device.c
++++ b/sound/usb/caiaq/device.c
+@@ -469,10 +469,12 @@ static int init_card(struct snd_usb_caiaqdev *cdev)
+
+ err = snd_usb_caiaq_send_command(cdev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
+ if (err)
+- return err;
++ goto err_kill_urb;
+
+- if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ))
+- return -ENODEV;
++ if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ)) {
++ err = -ENODEV;
++ goto err_kill_urb;
++ }
+
+ usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
+ cdev->vendor_name, CAIAQ_USB_STR_LEN);
+@@ -507,6 +509,10 @@ static int init_card(struct snd_usb_caiaqdev *cdev)
+
+ setup_card(cdev);
+ return 0;
++
++ err_kill_urb:
++ usb_kill_urb(&cdev->ep1_in_urb);
++ return err;
+ }
+
+ static int snd_probe(struct usb_interface *intf,
+diff --git a/sound/usb/card.c b/sound/usb/card.c
+index 86cf7b585e01..4bfbbd63ae90 100644
+--- a/sound/usb/card.c
++++ b/sound/usb/card.c
+@@ -218,6 +218,7 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
+ struct usb_interface_descriptor *altsd;
+ void *control_header;
+ int i, protocol;
++ int rest_bytes;
+
+ /* find audiocontrol interface */
+ host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0];
+@@ -232,6 +233,15 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
+ return -EINVAL;
+ }
+
++ rest_bytes = (void *)(host_iface->extra + host_iface->extralen) -
++ control_header;
++
++ /* just to be sure -- this shouldn't hit at all */
++ if (rest_bytes <= 0) {
++ dev_err(&dev->dev, "invalid control header\n");
++ return -EINVAL;
++ }
++
+ switch (protocol) {
+ default:
+ dev_warn(&dev->dev,
+@@ -242,11 +252,21 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
+ case UAC_VERSION_1: {
+ struct uac1_ac_header_descriptor *h1 = control_header;
+
++ if (rest_bytes < sizeof(*h1)) {
++ dev_err(&dev->dev, "too short v1 buffer descriptor\n");
++ return -EINVAL;
++ }
++
+ if (!h1->bInCollection) {
+ dev_info(&dev->dev, "skipping empty audio interface (v1)\n");
+ return -EINVAL;
+ }
+
++ if (rest_bytes < h1->bLength) {
++ dev_err(&dev->dev, "invalid buffer length (v1)\n");
++ return -EINVAL;
++ }
++
+ if (h1->bLength < sizeof(*h1) + h1->bInCollection) {
+ dev_err(&dev->dev, "invalid UAC_HEADER (v1)\n");
+ return -EINVAL;
+diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c
+index 81b7da8e56d3..6ea0350fe097 100644
+--- a/sound/usb/line6/driver.c
++++ b/sound/usb/line6/driver.c
+@@ -586,9 +586,10 @@ int line6_probe(struct usb_interface *interface,
+ return 0;
+
+ error:
+- if (line6->disconnect)
+- line6->disconnect(line6);
+- snd_card_free(card);
++ /* we can call disconnect callback here because no close-sync is
++ * needed yet at this point
++ */
++ line6_disconnect(interface);
+ return ret;
+ }
+ EXPORT_SYMBOL_GPL(line6_probe);
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index 33c544acf3f6..cb0ef39adc36 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -2155,6 +2155,9 @@ static int parse_audio_unit(struct mixer_build *state, int unitid)
+
+ static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
+ {
++ /* kill pending URBs */
++ snd_usb_mixer_disconnect(mixer);
++
+ kfree(mixer->id_elems);
+ if (mixer->urb) {
+ kfree(mixer->urb->transfer_buffer);
+@@ -2498,8 +2501,13 @@ _error:
+
+ void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer)
+ {
+- usb_kill_urb(mixer->urb);
+- usb_kill_urb(mixer->rc_urb);
++ if (mixer->disconnected)
++ return;
++ if (mixer->urb)
++ usb_kill_urb(mixer->urb);
++ if (mixer->rc_urb)
++ usb_kill_urb(mixer->rc_urb);
++ mixer->disconnected = true;
+ }
+
+ #ifdef CONFIG_PM
+diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h
+index 2b4b067646ab..545d99b09706 100644
+--- a/sound/usb/mixer.h
++++ b/sound/usb/mixer.h
+@@ -22,6 +22,8 @@ struct usb_mixer_interface {
+ struct urb *rc_urb;
+ struct usb_ctrlrequest *rc_setup_packet;
+ u8 rc_buffer[6];
++
++ bool disconnected;
+ };
+
+ #define MAX_CHANNELS 16 /* max logical channels */
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 693b2ac6720a..0cb245493d07 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1300,6 +1300,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
+ case USB_ID(0x20b1, 0x2008): /* Matrix Audio X-Sabre */
+ case USB_ID(0x20b1, 0x300a): /* Matrix Audio Mini-i Pro */
+ case USB_ID(0x22d9, 0x0416): /* OPPO HA-1 */
++ case USB_ID(0x2772, 0x0230): /* Pro-Ject Pre Box S2 Digital */
+ if (fp->altsetting == 2)
+ return SNDRV_PCM_FMTBIT_DSD_U32_BE;
+ break;
+diff --git a/sound/usb/usx2y/usb_stream.c b/sound/usb/usx2y/usb_stream.c
+index bf618e1500ac..e7b934f4d837 100644
+--- a/sound/usb/usx2y/usb_stream.c
++++ b/sound/usb/usx2y/usb_stream.c
+@@ -191,7 +191,8 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
+ }
+
+ pg = get_order(read_size);
+- sk->s = (void *) __get_free_pages(GFP_KERNEL|__GFP_COMP|__GFP_ZERO, pg);
++ sk->s = (void *) __get_free_pages(GFP_KERNEL|__GFP_COMP|__GFP_ZERO|
++ __GFP_NOWARN, pg);
+ if (!sk->s) {
+ snd_printk(KERN_WARNING "couldn't __get_free_pages()\n");
+ goto out;
+@@ -211,7 +212,8 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
+ pg = get_order(write_size);
+
+ sk->write_page =
+- (void *)__get_free_pages(GFP_KERNEL|__GFP_COMP|__GFP_ZERO, pg);
++ (void *)__get_free_pages(GFP_KERNEL|__GFP_COMP|__GFP_ZERO|
++ __GFP_NOWARN, pg);
+ if (!sk->write_page) {
+ snd_printk(KERN_WARNING "couldn't __get_free_pages()\n");
+ usb_stream_free(sk);
+diff --git a/tools/include/linux/compiler.h b/tools/include/linux/compiler.h
+index 88461f09cc86..8717c80f759c 100644
+--- a/tools/include/linux/compiler.h
++++ b/tools/include/linux/compiler.h
+@@ -37,4 +37,12 @@
+
+ #define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
+
++#ifndef __fallthrough
++# if defined(__GNUC__) && __GNUC__ >= 7
++# define __fallthrough __attribute__ ((fallthrough))
++# else
++# define __fallthrough
++# endif
++#endif
++
+ #endif /* _TOOLS_LINUX_COMPILER_H */
+diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/Build b/tools/perf/scripts/perl/Perf-Trace-Util/Build
+index 928e110179cb..34faecf774ae 100644
+--- a/tools/perf/scripts/perl/Perf-Trace-Util/Build
++++ b/tools/perf/scripts/perl/Perf-Trace-Util/Build
+@@ -1,3 +1,5 @@
+ libperf-y += Context.o
+
+-CFLAGS_Context.o += $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-nested-externs -Wno-undef -Wno-switch-default
++CFLAGS_Context.o += $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes
++CFLAGS_Context.o += -Wno-unused-parameter -Wno-nested-externs -Wno-undef
++CFLAGS_Context.o += -Wno-switch-default -Wno-shadow
diff --git a/1046_linux-4.1.47.patch b/1046_linux-4.1.47.patch
new file mode 100644
index 0000000..30005e4
--- /dev/null
+++ b/1046_linux-4.1.47.patch
@@ -0,0 +1,5346 @@
+diff --git a/Makefile b/Makefile
+index 1b4148baf398..c730c9719f6d 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 46
++SUBLEVEL = 47
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
+index 3743ca221d40..a04518090875 100644
+--- a/arch/arm/configs/omap2plus_defconfig
++++ b/arch/arm/configs/omap2plus_defconfig
+@@ -215,6 +215,7 @@ CONFIG_SERIO=m
+ CONFIG_SERIAL_8250=y
+ CONFIG_SERIAL_8250_CONSOLE=y
+ CONFIG_SERIAL_8250_NR_UARTS=32
++CONFIG_SERIAL_8250_RUNTIME_UARTS=6
+ CONFIG_SERIAL_8250_EXTENDED=y
+ CONFIG_SERIAL_8250_MANY_PORTS=y
+ CONFIG_SERIAL_8250_SHARE_IRQ=y
+diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
+index 3c4596d0ce6c..4f633276452a 100644
+--- a/arch/arm/include/asm/Kbuild
++++ b/arch/arm/include/asm/Kbuild
+@@ -36,4 +36,3 @@ generic-y += termbits.h
+ generic-y += termios.h
+ generic-y += timex.h
+ generic-y += trace_clock.h
+-generic-y += unaligned.h
+diff --git a/arch/arm/include/asm/unaligned.h b/arch/arm/include/asm/unaligned.h
+new file mode 100644
+index 000000000000..ab905ffcf193
+--- /dev/null
++++ b/arch/arm/include/asm/unaligned.h
+@@ -0,0 +1,27 @@
++#ifndef __ASM_ARM_UNALIGNED_H
++#define __ASM_ARM_UNALIGNED_H
++
++/*
++ * We generally want to set CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS on ARMv6+,
++ * but we don't want to use linux/unaligned/access_ok.h since that can lead
++ * to traps on unaligned stm/ldm or strd/ldrd.
++ */
++#include <asm/byteorder.h>
++
++#if defined(__LITTLE_ENDIAN)
++# include <linux/unaligned/le_struct.h>
++# include <linux/unaligned/be_byteshift.h>
++# include <linux/unaligned/generic.h>
++# define get_unaligned __get_unaligned_le
++# define put_unaligned __put_unaligned_le
++#elif defined(__BIG_ENDIAN)
++# include <linux/unaligned/be_struct.h>
++# include <linux/unaligned/le_byteshift.h>
++# include <linux/unaligned/generic.h>
++# define get_unaligned __get_unaligned_be
++# define put_unaligned __put_unaligned_be
++#else
++# error need to define endianess
++#endif
++
++#endif /* __ASM_ARM_UNALIGNED_H */
+diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
+index 3dce1a342030..6da8d9754450 100644
+--- a/arch/arm/kernel/traps.c
++++ b/arch/arm/kernel/traps.c
+@@ -132,30 +132,26 @@ static void dump_mem(const char *lvl, const char *str, unsigned long bottom,
+ set_fs(fs);
+ }
+
+-static void dump_instr(const char *lvl, struct pt_regs *regs)
++static void __dump_instr(const char *lvl, struct pt_regs *regs)
+ {
+ unsigned long addr = instruction_pointer(regs);
+ const int thumb = thumb_mode(regs);
+ const int width = thumb ? 4 : 8;
+- mm_segment_t fs;
+ char str[sizeof("00000000 ") * 5 + 2 + 1], *p = str;
+ int i;
+
+ /*
+- * We need to switch to kernel mode so that we can use __get_user
+- * to safely read from kernel space. Note that we now dump the
+- * code first, just in case the backtrace kills us.
++ * Note that we now dump the code first, just in case the backtrace
++ * kills us.
+ */
+- fs = get_fs();
+- set_fs(KERNEL_DS);
+
+ for (i = -4; i < 1 + !!thumb; i++) {
+ unsigned int val, bad;
+
+ if (thumb)
+- bad = __get_user(val, &((u16 *)addr)[i]);
++ bad = get_user(val, &((u16 *)addr)[i]);
+ else
+- bad = __get_user(val, &((u32 *)addr)[i]);
++ bad = get_user(val, &((u32 *)addr)[i]);
+
+ if (!bad)
+ p += sprintf(p, i == 0 ? "(%0*x) " : "%0*x ",
+@@ -166,8 +162,20 @@ static void dump_instr(const char *lvl, struct pt_regs *regs)
+ }
+ }
+ printk("%sCode: %s\n", lvl, str);
++}
+
+- set_fs(fs);
++static void dump_instr(const char *lvl, struct pt_regs *regs)
++{
++ mm_segment_t fs;
++
++ if (!user_mode(regs)) {
++ fs = get_fs();
++ set_fs(KERNEL_DS);
++ __dump_instr(lvl, regs);
++ set_fs(fs);
++ } else {
++ __dump_instr(lvl, regs);
++ }
+ }
+
+ #ifdef CONFIG_ARM_UNWIND
+diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
+index af11511dda50..d9a044ff0a5d 100644
+--- a/arch/arm/mach-omap2/pdata-quirks.c
++++ b/arch/arm/mach-omap2/pdata-quirks.c
+@@ -372,7 +372,6 @@ static void pdata_quirks_check(struct pdata_init *quirks)
+ if (of_machine_is_compatible(quirks->compatible)) {
+ if (quirks->fn)
+ quirks->fn();
+- break;
+ }
+ quirks++;
+ }
+diff --git a/arch/arm/mach-pxa/balloon3.c b/arch/arm/mach-pxa/balloon3.c
+index d897292712eb..4452d45f724f 100644
+--- a/arch/arm/mach-pxa/balloon3.c
++++ b/arch/arm/mach-pxa/balloon3.c
+@@ -17,6 +17,7 @@
+ #include <linux/init.h>
+ #include <linux/platform_device.h>
+ #include <linux/interrupt.h>
++#include <linux/leds.h>
+ #include <linux/sched.h>
+ #include <linux/bitops.h>
+ #include <linux/fb.h>
+diff --git a/arch/arm/mach-pxa/colibri-pxa270-income.c b/arch/arm/mach-pxa/colibri-pxa270-income.c
+index 3aa264640c9d..caa66c06a7a3 100644
+--- a/arch/arm/mach-pxa/colibri-pxa270-income.c
++++ b/arch/arm/mach-pxa/colibri-pxa270-income.c
+@@ -17,6 +17,7 @@
+ #include <linux/gpio.h>
+ #include <linux/init.h>
+ #include <linux/interrupt.h>
++#include <linux/leds.h>
+ #include <linux/ioport.h>
+ #include <linux/kernel.h>
+ #include <linux/platform_device.h>
+diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
+index 89f790dda93e..d1f12909f740 100644
+--- a/arch/arm/mach-pxa/corgi.c
++++ b/arch/arm/mach-pxa/corgi.c
+@@ -18,6 +18,7 @@
+ #include <linux/major.h>
+ #include <linux/fs.h>
+ #include <linux/interrupt.h>
++#include <linux/leds.h>
+ #include <linux/mmc/host.h>
+ #include <linux/mtd/physmap.h>
+ #include <linux/pm.h>
+diff --git a/arch/arm/mach-pxa/trizeps4.c b/arch/arm/mach-pxa/trizeps4.c
+index 066e3a250ee0..5e50c53f1f4b 100644
+--- a/arch/arm/mach-pxa/trizeps4.c
++++ b/arch/arm/mach-pxa/trizeps4.c
+@@ -16,6 +16,7 @@
+ #include <linux/kernel.h>
+ #include <linux/platform_device.h>
+ #include <linux/interrupt.h>
++#include <linux/leds.h>
+ #include <linux/export.h>
+ #include <linux/sched.h>
+ #include <linux/bitops.h>
+diff --git a/arch/arm/mach-pxa/vpac270.c b/arch/arm/mach-pxa/vpac270.c
+index 54122a983ae3..2cce92924068 100644
+--- a/arch/arm/mach-pxa/vpac270.c
++++ b/arch/arm/mach-pxa/vpac270.c
+@@ -15,6 +15,7 @@
+ #include <linux/irq.h>
+ #include <linux/gpio_keys.h>
+ #include <linux/input.h>
++#include <linux/leds.h>
+ #include <linux/gpio.h>
+ #include <linux/usb/gpio_vbus.h>
+ #include <linux/mtd/mtd.h>
+diff --git a/arch/arm/mach-pxa/zeus.c b/arch/arm/mach-pxa/zeus.c
+index 6158566fa0f7..dc96cb9b7a89 100644
+--- a/arch/arm/mach-pxa/zeus.c
++++ b/arch/arm/mach-pxa/zeus.c
+@@ -13,6 +13,7 @@
+
+ #include <linux/cpufreq.h>
+ #include <linux/interrupt.h>
++#include <linux/leds.h>
+ #include <linux/irq.h>
+ #include <linux/pm.h>
+ #include <linux/gpio.h>
+diff --git a/arch/arm/mach-pxa/zylonite.c b/arch/arm/mach-pxa/zylonite.c
+index 77daea478e88..68019c393b83 100644
+--- a/arch/arm/mach-pxa/zylonite.c
++++ b/arch/arm/mach-pxa/zylonite.c
+@@ -16,6 +16,7 @@
+ #include <linux/module.h>
+ #include <linux/kernel.h>
+ #include <linux/interrupt.h>
++#include <linux/leds.h>
+ #include <linux/init.h>
+ #include <linux/platform_device.h>
+ #include <linux/gpio.h>
+diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
+index 498325074a06..0576be82b533 100644
+--- a/arch/arm/xen/mm.c
++++ b/arch/arm/xen/mm.c
+@@ -180,6 +180,7 @@ static struct dma_map_ops xen_swiotlb_dma_ops = {
+ .unmap_page = xen_swiotlb_unmap_page,
+ .dma_supported = xen_swiotlb_dma_supported,
+ .set_dma_mask = xen_swiotlb_set_dma_mask,
++ .mmap = xen_swiotlb_dma_mmap,
+ };
+
+ int __init xen_mm_init(void)
+diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
+index 1ef2940df13c..8bbd57efae78 100644
+--- a/arch/arm64/kernel/traps.c
++++ b/arch/arm64/kernel/traps.c
+@@ -116,7 +116,7 @@ static void dump_instr(const char *lvl, struct pt_regs *regs)
+ for (i = -4; i < 1; i++) {
+ unsigned int val, bad;
+
+- bad = __get_user(val, &((u32 *)addr)[i]);
++ bad = get_user(val, &((u32 *)addr)[i]);
+
+ if (!bad)
+ p += sprintf(p, i == 0 ? "(%08x) " : "%08x ", val);
+diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c
+index be9ff1673ded..5afbb7b41160 100644
+--- a/arch/mips/ar7/platform.c
++++ b/arch/mips/ar7/platform.c
+@@ -577,6 +577,7 @@ static int __init ar7_register_uarts(void)
+ uart_port.type = PORT_AR7;
+ uart_port.uartclk = clk_get_rate(bus_clk) / 2;
+ uart_port.iotype = UPIO_MEM32;
++ uart_port.flags = UPF_FIXED_TYPE;
+ uart_port.regshift = 2;
+
+ uart_port.line = 0;
+@@ -655,6 +656,10 @@ static int __init ar7_register_devices(void)
+ u32 val;
+ int res;
+
++ res = ar7_gpio_init();
++ if (res)
++ pr_warn("unable to register gpios: %d\n", res);
++
+ res = ar7_register_uarts();
+ if (res)
+ pr_err("unable to setup uart(s): %d\n", res);
+diff --git a/arch/mips/ar7/prom.c b/arch/mips/ar7/prom.c
+index a23adc49d50f..36aabee9cba4 100644
+--- a/arch/mips/ar7/prom.c
++++ b/arch/mips/ar7/prom.c
+@@ -246,8 +246,6 @@ void __init prom_init(void)
+ ar7_init_cmdline(fw_arg0, (char **)fw_arg1);
+ ar7_init_env((struct env_var *)fw_arg2);
+ console_config();
+-
+- ar7_gpio_init();
+ }
+
+ #define PORT(offset) (KSEG1ADDR(AR7_REGS_UART0 + (offset * 4)))
+diff --git a/arch/mips/include/asm/asm.h b/arch/mips/include/asm/asm.h
+index 7c26b28bf252..859cf7048347 100644
+--- a/arch/mips/include/asm/asm.h
++++ b/arch/mips/include/asm/asm.h
+@@ -54,7 +54,8 @@
+ .align 2; \
+ .type symbol, @function; \
+ .ent symbol, 0; \
+-symbol: .frame sp, 0, ra
++symbol: .frame sp, 0, ra; \
++ .insn
+
+ /*
+ * NESTED - declare nested routine entry point
+@@ -63,8 +64,9 @@ symbol: .frame sp, 0, ra
+ .globl symbol; \
+ .align 2; \
+ .type symbol, @function; \
+- .ent symbol, 0; \
+-symbol: .frame sp, framesize, rpc
++ .ent symbol, 0; \
++symbol: .frame sp, framesize, rpc; \
++ .insn
+
+ /*
+ * END - mark end of function
+@@ -86,7 +88,7 @@ symbol:
+ #define FEXPORT(symbol) \
+ .globl symbol; \
+ .type symbol, @function; \
+-symbol:
++symbol: .insn
+
+ /*
+ * ABS - export absolute symbol
+diff --git a/arch/mips/include/asm/mips-cm.h b/arch/mips/include/asm/mips-cm.h
+index 59c0901bdd84..cd74e7fae9e4 100644
+--- a/arch/mips/include/asm/mips-cm.h
++++ b/arch/mips/include/asm/mips-cm.h
+@@ -173,8 +173,8 @@ BUILD_CM_Cx_R_(tcid_8_priority, 0x80)
+ #define CM_GCR_BASE_GCRBASE_MSK (_ULCAST_(0x1ffff) << 15)
+ #define CM_GCR_BASE_CMDEFTGT_SHF 0
+ #define CM_GCR_BASE_CMDEFTGT_MSK (_ULCAST_(0x3) << 0)
+-#define CM_GCR_BASE_CMDEFTGT_DISABLED 0
+-#define CM_GCR_BASE_CMDEFTGT_MEM 1
++#define CM_GCR_BASE_CMDEFTGT_MEM 0
++#define CM_GCR_BASE_CMDEFTGT_RESERVED 1
+ #define CM_GCR_BASE_CMDEFTGT_IOCU0 2
+ #define CM_GCR_BASE_CMDEFTGT_IOCU1 3
+
+diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
+index fc537d1b649d..ded8b8ba34fd 100644
+--- a/arch/mips/kernel/process.c
++++ b/arch/mips/kernel/process.c
+@@ -48,9 +48,7 @@
+ #ifdef CONFIG_HOTPLUG_CPU
+ void arch_cpu_idle_dead(void)
+ {
+- /* What the heck is this check doing ? */
+- if (!cpumask_test_cpu(smp_processor_id(), &cpu_callin_map))
+- play_dead();
++ play_dead();
+ }
+ #endif
+
+diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
+index be73c491182b..51e77841f9f6 100644
+--- a/arch/mips/kernel/setup.c
++++ b/arch/mips/kernel/setup.c
+@@ -147,6 +147,35 @@ void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_add
+ add_memory_region(start, size, BOOT_MEM_RAM);
+ }
+
++bool __init memory_region_available(phys_addr_t start, phys_addr_t size)
++{
++ int i;
++ bool in_ram = false, free = true;
++
++ for (i = 0; i < boot_mem_map.nr_map; i++) {
++ phys_addr_t start_, end_;
++
++ start_ = boot_mem_map.map[i].addr;
++ end_ = boot_mem_map.map[i].addr + boot_mem_map.map[i].size;
++
++ switch (boot_mem_map.map[i].type) {
++ case BOOT_MEM_RAM:
++ if (start >= start_ && start + size <= end_)
++ in_ram = true;
++ break;
++ case BOOT_MEM_RESERVED:
++ if ((start >= start_ && start < end_) ||
++ (start < start_ && start + size >= start_))
++ free = false;
++ break;
++ default:
++ continue;
++ }
++ }
++
++ return in_ram && free;
++}
++
+ static void __init print_memory_map(void)
+ {
+ int i;
+@@ -295,11 +324,19 @@ static void __init bootmem_init(void)
+
+ #else /* !CONFIG_SGI_IP27 */
+
++static unsigned long __init bootmap_bytes(unsigned long pages)
++{
++ unsigned long bytes = DIV_ROUND_UP(pages, 8);
++
++ return ALIGN(bytes, sizeof(long));
++}
++
+ static void __init bootmem_init(void)
+ {
+ unsigned long reserved_end;
+ unsigned long mapstart = ~0UL;
+ unsigned long bootmap_size;
++ bool bootmap_valid = false;
+ int i;
+
+ /*
+@@ -375,11 +412,42 @@ static void __init bootmem_init(void)
+ #endif
+
+ /*
+- * Initialize the boot-time allocator with low memory only.
++ * check that mapstart doesn't overlap with any of
++ * memory regions that have been reserved through eg. DTB
+ */
+- bootmap_size = init_bootmem_node(NODE_DATA(0), mapstart,
+- min_low_pfn, max_low_pfn);
++ bootmap_size = bootmap_bytes(max_low_pfn - min_low_pfn);
++
++ bootmap_valid = memory_region_available(PFN_PHYS(mapstart),
++ bootmap_size);
++ for (i = 0; i < boot_mem_map.nr_map && !bootmap_valid; i++) {
++ unsigned long mapstart_addr;
++
++ switch (boot_mem_map.map[i].type) {
++ case BOOT_MEM_RESERVED:
++ mapstart_addr = PFN_ALIGN(boot_mem_map.map[i].addr +
++ boot_mem_map.map[i].size);
++ if (PHYS_PFN(mapstart_addr) < mapstart)
++ break;
++
++ bootmap_valid = memory_region_available(mapstart_addr,
++ bootmap_size);
++ if (bootmap_valid)
++ mapstart = PHYS_PFN(mapstart_addr);
++ break;
++ default:
++ break;
++ }
++ }
+
++ if (!bootmap_valid)
++ panic("No memory area to place a bootmap bitmap");
++
++ /*
++ * Initialize the boot-time allocator with low memory only.
++ */
++ if (bootmap_size != init_bootmem_node(NODE_DATA(0), mapstart,
++ min_low_pfn, max_low_pfn))
++ panic("Unexpected memory size required for bootmap");
+
+ for (i = 0; i < boot_mem_map.nr_map; i++) {
+ unsigned long start, end;
+@@ -428,6 +496,10 @@ static void __init bootmem_init(void)
+ continue;
+ default:
+ /* Not usable memory */
++ if (start > min_low_pfn && end < max_low_pfn)
++ reserve_bootmem(boot_mem_map.map[i].addr,
++ boot_mem_map.map[i].size,
++ BOOTMEM_DEFAULT);
+ continue;
+ }
+
+diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
+index a0268f61cd57..51d3c301dae9 100644
+--- a/arch/mips/kernel/smp.c
++++ b/arch/mips/kernel/smp.c
+@@ -63,6 +63,9 @@ EXPORT_SYMBOL(cpu_sibling_map);
+ cpumask_t cpu_core_map[NR_CPUS] __read_mostly;
+ EXPORT_SYMBOL(cpu_core_map);
+
++static DECLARE_COMPLETION(cpu_starting);
++static DECLARE_COMPLETION(cpu_running);
++
+ /*
+ * A logcal cpu mask containing only one VPE per core to
+ * reduce the number of IPIs on large MT systems.
+@@ -172,9 +175,12 @@ asmlinkage void start_secondary(void)
+ cpumask_set_cpu(cpu, &cpu_coherent_mask);
+ notify_cpu_starting(cpu);
+
+- cpumask_set_cpu(cpu, &cpu_callin_map);
++ /* Notify boot CPU that we're starting & ready to sync counters */
++ complete(&cpu_starting);
++
+ synchronise_count_slave(cpu);
+
++ /* The CPU is running and counters synchronised, now mark it online */
+ set_cpu_online(cpu, true);
+
+ set_cpu_sibling_map(cpu);
+@@ -182,6 +188,12 @@ asmlinkage void start_secondary(void)
+
+ calculate_cpu_foreign_map();
+
++ /*
++ * Notify boot CPU that we're up & online and it can safely return
++ * from __cpu_up
++ */
++ complete(&cpu_running);
++
+ /*
+ * irq will be enabled in ->smp_finish(), enabling it too early
+ * is dangerous.
+@@ -250,22 +262,23 @@ void smp_prepare_boot_cpu(void)
+ {
+ set_cpu_possible(0, true);
+ set_cpu_online(0, true);
+- cpumask_set_cpu(0, &cpu_callin_map);
+ }
+
+ int __cpu_up(unsigned int cpu, struct task_struct *tidle)
+ {
+ mp_ops->boot_secondary(cpu, tidle);
+
+- /*
+- * Trust is futile. We should really have timeouts ...
+- */
+- while (!cpumask_test_cpu(cpu, &cpu_callin_map)) {
+- udelay(100);
+- schedule();
++ /* Wait for CPU to start and be ready to sync counters */
++ if (!wait_for_completion_timeout(&cpu_starting,
++ msecs_to_jiffies(1000))) {
++ pr_crit("CPU%u: failed to start\n", cpu);
++ return -EIO;
+ }
+
+ synchronise_count_master(cpu);
++
++ /* Wait for CPU to finish startup & mark itself online before return */
++ wait_for_completion(&cpu_running);
+ return 0;
+ }
+
+diff --git a/arch/mips/mm/uasm-micromips.c b/arch/mips/mm/uasm-micromips.c
+index d78178daea4b..e2fe48dd67b5 100644
+--- a/arch/mips/mm/uasm-micromips.c
++++ b/arch/mips/mm/uasm-micromips.c
+@@ -75,7 +75,7 @@ static struct insn insn_table_MM[] = {
+ { insn_jr, M(mm_pool32a_op, 0, 0, 0, mm_jalr_op, mm_pool32axf_op), RS },
+ { insn_lb, M(mm_lb32_op, 0, 0, 0, 0, 0), RT | RS | SIMM },
+ { insn_ld, 0, 0 },
+- { insn_lh, M(mm_lh32_op, 0, 0, 0, 0, 0), RS | RS | SIMM },
++ { insn_lh, M(mm_lh32_op, 0, 0, 0, 0, 0), RT | RS | SIMM },
+ { insn_ll, M(mm_pool32c_op, 0, 0, (mm_ll_func << 1), 0, 0), RS | RT | SIMM },
+ { insn_lld, 0, 0 },
+ { insn_lui, M(mm_pool32i_op, mm_lui_op, 0, 0, 0, 0), RS | SIMM },
+diff --git a/arch/mips/netlogic/common/irq.c b/arch/mips/netlogic/common/irq.c
+index 5f5d18b0e94d..14e368d88dac 100644
+--- a/arch/mips/netlogic/common/irq.c
++++ b/arch/mips/netlogic/common/irq.c
+@@ -275,7 +275,7 @@ asmlinkage void plat_irq_dispatch(void)
+ do_IRQ(nlm_irq_to_xirq(node, i));
+ }
+
+-#ifdef CONFIG_OF
++#ifdef CONFIG_CPU_XLP
+ static const struct irq_domain_ops xlp_pic_irq_domain_ops = {
+ .xlate = irq_domain_xlate_onetwocell,
+ };
+@@ -348,7 +348,7 @@ void __init arch_init_irq(void)
+ #if defined(CONFIG_CPU_XLR)
+ nlm_setup_fmn_irq();
+ #endif
+-#if defined(CONFIG_OF)
++#ifdef CONFIG_CPU_XLP
+ of_irq_init(xlp_pic_irq_ids);
+ #endif
+ }
+diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
+index 190cc48abc0c..4b8c928a9873 100644
+--- a/arch/powerpc/Kconfig
++++ b/arch/powerpc/Kconfig
+@@ -1079,11 +1079,6 @@ source "arch/powerpc/Kconfig.debug"
+
+ source "security/Kconfig"
+
+-config KEYS_COMPAT
+- bool
+- depends on COMPAT && KEYS
+- default y
+-
+ source "crypto/Kconfig"
+
+ config PPC_LIB_RHEAP
+diff --git a/arch/powerpc/kvm/book3s_hv_rm_xics.c b/arch/powerpc/kvm/book3s_hv_rm_xics.c
+index 00e45b6d4f24..1c0f762c7613 100644
+--- a/arch/powerpc/kvm/book3s_hv_rm_xics.c
++++ b/arch/powerpc/kvm/book3s_hv_rm_xics.c
+@@ -282,6 +282,7 @@ static void icp_rm_deliver_irq(struct kvmppc_xics *xics, struct kvmppc_icp *icp,
+ */
+ if (reject && reject != XICS_IPI) {
+ arch_spin_unlock(&ics->lock);
++ icp->n_reject++;
+ new_irq = reject;
+ goto again;
+ }
+@@ -613,10 +614,8 @@ int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr)
+ state = &ics->irq_state[src];
+
+ /* Still asserted, resend it */
+- if (state->asserted) {
+- icp->n_reject++;
++ if (state->asserted)
+ icp_rm_deliver_irq(xics, icp, irq);
+- }
+
+ if (!hlist_empty(&vcpu->kvm->irq_ack_notifier_list)) {
+ icp->rm_action |= XICS_RM_NOTIFY_EOI;
+diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
+index b06dc3839268..a37c902c123f 100644
+--- a/arch/s390/Kconfig
++++ b/arch/s390/Kconfig
+@@ -338,9 +338,6 @@ config COMPAT
+ config SYSVIPC_COMPAT
+ def_bool y if COMPAT && SYSVIPC
+
+-config KEYS_COMPAT
+- def_bool y if COMPAT && KEYS
+-
+ config SMP
+ def_bool y
+ prompt "Symmetric multi-processing support"
+diff --git a/arch/sh/kernel/cpu/sh3/setup-sh770x.c b/arch/sh/kernel/cpu/sh3/setup-sh770x.c
+index 538c10db3537..8dc315b212c2 100644
+--- a/arch/sh/kernel/cpu/sh3/setup-sh770x.c
++++ b/arch/sh/kernel/cpu/sh3/setup-sh770x.c
+@@ -165,7 +165,6 @@ static struct plat_sci_port scif2_platform_data = {
+ .scscr = SCSCR_TE | SCSCR_RE,
+ .type = PORT_IRDA,
+ .ops = &sh770x_sci_port_ops,
+- .regshift = 1,
+ };
+
+ static struct resource scif2_resources[] = {
+diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
+index a1c2ecc4bec7..6fd39d987b05 100644
+--- a/arch/sparc/Kconfig
++++ b/arch/sparc/Kconfig
+@@ -549,9 +549,6 @@ config SYSVIPC_COMPAT
+ depends on COMPAT && SYSVIPC
+ default y
+
+-config KEYS_COMPAT
+- def_bool y if COMPAT && KEYS
+-
+ endmenu
+
+ source "net/Kconfig"
+diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
+index 226d5696e1d1..a3d283addbde 100644
+--- a/arch/x86/Kconfig
++++ b/arch/x86/Kconfig
+@@ -2552,10 +2552,6 @@ config COMPAT_FOR_U64_ALIGNMENT
+ config SYSVIPC_COMPAT
+ def_bool y
+ depends on SYSVIPC
+-
+-config KEYS_COMPAT
+- def_bool y
+- depends on KEYS
+ endif
+
+ endmenu
+diff --git a/arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S b/arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S
+index 85c4e1cf7172..e1693457c178 100644
+--- a/arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S
++++ b/arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S
+@@ -174,8 +174,8 @@ LABEL skip_ %I
+ .endr
+
+ # Find min length
+- vmovdqa _lens+0*16(state), %xmm0
+- vmovdqa _lens+1*16(state), %xmm1
++ vmovdqu _lens+0*16(state), %xmm0
++ vmovdqu _lens+1*16(state), %xmm1
+
+ vpminud %xmm1, %xmm0, %xmm2 # xmm2 has {D,C,B,A}
+ vpalignr $8, %xmm2, %xmm3, %xmm3 # xmm3 has {x,x,D,C}
+@@ -195,8 +195,8 @@ LABEL skip_ %I
+ vpsubd %xmm2, %xmm0, %xmm0
+ vpsubd %xmm2, %xmm1, %xmm1
+
+- vmovdqa %xmm0, _lens+0*16(state)
+- vmovdqa %xmm1, _lens+1*16(state)
++ vmovdqu %xmm0, _lens+0*16(state)
++ vmovdqu %xmm1, _lens+1*16(state)
+
+ # "state" and "args" are the same address, arg1
+ # len is arg2
+@@ -260,8 +260,8 @@ ENTRY(sha1_mb_mgr_get_comp_job_avx2)
+ jc .return_null
+
+ # Find min length
+- vmovdqa _lens(state), %xmm0
+- vmovdqa _lens+1*16(state), %xmm1
++ vmovdqu _lens(state), %xmm0
++ vmovdqu _lens+1*16(state), %xmm1
+
+ vpminud %xmm1, %xmm0, %xmm2 # xmm2 has {D,C,B,A}
+ vpalignr $8, %xmm2, %xmm3, %xmm3 # xmm3 has {x,x,D,C}
+diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
+index 57a9d94fe160..cba3ef3c690d 100644
+--- a/arch/x86/include/asm/kvm_emulate.h
++++ b/arch/x86/include/asm/kvm_emulate.h
+@@ -277,6 +277,7 @@ struct x86_emulate_ctxt {
+ bool guest_mode; /* guest running a nested guest */
+ bool perm_ok; /* do not check permissions if true */
+ bool ud; /* inject an #UD if host doesn't support insn */
++ bool tf; /* TF value before instruction (after for syscall/sysret) */
+
+ bool have_exception;
+ struct x86_exception exception;
+diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
+index 630bcb0d7a04..d877a59f8de8 100644
+--- a/arch/x86/kvm/emulate.c
++++ b/arch/x86/kvm/emulate.c
+@@ -2400,6 +2400,7 @@ static int em_syscall(struct x86_emulate_ctxt *ctxt)
+ ctxt->eflags &= ~(X86_EFLAGS_VM | X86_EFLAGS_IF);
+ }
+
++ ctxt->tf = (ctxt->eflags & X86_EFLAGS_TF) != 0;
+ return X86EMUL_CONTINUE;
+ }
+
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 9d7ea42482e3..5f9cf11f9446 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -5132,6 +5132,8 @@ static void init_emulate_ctxt(struct kvm_vcpu *vcpu)
+ kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
+
+ ctxt->eflags = kvm_get_rflags(vcpu);
++ ctxt->tf = (ctxt->eflags & X86_EFLAGS_TF) != 0;
++
+ ctxt->eip = kvm_rip_read(vcpu);
+ ctxt->mode = (!is_protmode(vcpu)) ? X86EMUL_MODE_REAL :
+ (ctxt->eflags & X86_EFLAGS_VM) ? X86EMUL_MODE_VM86 :
+@@ -5322,37 +5324,26 @@ static int kvm_vcpu_check_hw_bp(unsigned long addr, u32 type, u32 dr7,
+ return dr6;
+ }
+
+-static void kvm_vcpu_check_singlestep(struct kvm_vcpu *vcpu, unsigned long rflags, int *r)
++static void kvm_vcpu_do_singlestep(struct kvm_vcpu *vcpu, int *r)
+ {
+ struct kvm_run *kvm_run = vcpu->run;
+
+- /*
+- * rflags is the old, "raw" value of the flags. The new value has
+- * not been saved yet.
+- *
+- * This is correct even for TF set by the guest, because "the
+- * processor will not generate this exception after the instruction
+- * that sets the TF flag".
+- */
+- if (unlikely(rflags & X86_EFLAGS_TF)) {
+- if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
+- kvm_run->debug.arch.dr6 = DR6_BS | DR6_FIXED_1 |
+- DR6_RTM;
+- kvm_run->debug.arch.pc = vcpu->arch.singlestep_rip;
+- kvm_run->debug.arch.exception = DB_VECTOR;
+- kvm_run->exit_reason = KVM_EXIT_DEBUG;
+- *r = EMULATE_USER_EXIT;
+- } else {
+- vcpu->arch.emulate_ctxt.eflags &= ~X86_EFLAGS_TF;
+- /*
+- * "Certain debug exceptions may clear bit 0-3. The
+- * remaining contents of the DR6 register are never
+- * cleared by the processor".
+- */
+- vcpu->arch.dr6 &= ~15;
+- vcpu->arch.dr6 |= DR6_BS | DR6_RTM;
+- kvm_queue_exception(vcpu, DB_VECTOR);
+- }
++ if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
++ kvm_run->debug.arch.dr6 = DR6_BS | DR6_FIXED_1 | DR6_RTM;
++ kvm_run->debug.arch.pc = vcpu->arch.singlestep_rip;
++ kvm_run->debug.arch.exception = DB_VECTOR;
++ kvm_run->exit_reason = KVM_EXIT_DEBUG;
++ *r = EMULATE_USER_EXIT;
++ } else {
++ vcpu->arch.emulate_ctxt.eflags &= ~X86_EFLAGS_TF;
++ /*
++ * "Certain debug exceptions may clear bit 0-3. The
++ * remaining contents of the DR6 register are never
++ * cleared by the processor".
++ */
++ vcpu->arch.dr6 &= ~15;
++ vcpu->arch.dr6 |= DR6_BS | DR6_RTM;
++ kvm_queue_exception(vcpu, DB_VECTOR);
+ }
+ }
+
+@@ -5507,8 +5498,9 @@ restart:
+ toggle_interruptibility(vcpu, ctxt->interruptibility);
+ vcpu->arch.emulate_regs_need_sync_to_vcpu = false;
+ kvm_rip_write(vcpu, ctxt->eip);
+- if (r == EMULATE_DONE)
+- kvm_vcpu_check_singlestep(vcpu, rflags, &r);
++ if (r == EMULATE_DONE &&
++ (ctxt->tf || (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)))
++ kvm_vcpu_do_singlestep(vcpu, &r);
+ if (!ctxt->have_exception ||
+ exception_type(ctxt->exception.vector) == EXCPT_TRAP)
+ __kvm_set_rflags(vcpu, ctxt->eflags);
+diff --git a/arch/x86/oprofile/op_model_ppro.c b/arch/x86/oprofile/op_model_ppro.c
+index d90528ea5412..12c051d19e4b 100644
+--- a/arch/x86/oprofile/op_model_ppro.c
++++ b/arch/x86/oprofile/op_model_ppro.c
+@@ -212,8 +212,8 @@ static void arch_perfmon_setup_counters(void)
+ eax.full = cpuid_eax(0xa);
+
+ /* Workaround for BIOS bugs in 6/15. Taken from perfmon2 */
+- if (eax.split.version_id == 0 && __this_cpu_read(cpu_info.x86) == 6 &&
+- __this_cpu_read(cpu_info.x86_model) == 15) {
++ if (eax.split.version_id == 0 && boot_cpu_data.x86 == 6 &&
++ boot_cpu_data.x86_model == 15) {
+ eax.split.version_id = 2;
+ eax.split.num_counters = 2;
+ eax.split.bit_width = 40;
+diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
+index 9dca4b995be0..d9a94bee1905 100644
+--- a/drivers/ata/Kconfig
++++ b/drivers/ata/Kconfig
+@@ -245,6 +245,7 @@ config SATA_SX4
+
+ config ATA_BMDMA
+ bool "ATA BMDMA support"
++ depends on HAS_DMA
+ default y
+ help
+ This option adds support for SFF ATA controllers with BMDMA
+@@ -291,6 +292,7 @@ config SATA_DWC_VDEBUG
+
+ config SATA_HIGHBANK
+ tristate "Calxeda Highbank SATA support"
++ depends on HAS_DMA
+ depends on ARCH_HIGHBANK || COMPILE_TEST
+ help
+ This option enables support for the Calxeda Highbank SoC's
+@@ -300,6 +302,7 @@ config SATA_HIGHBANK
+
+ config SATA_MV
+ tristate "Marvell SATA support"
++ depends on HAS_DMA
+ depends on PCI || ARCH_DOVE || ARCH_MV78XX0 || \
+ ARCH_MVEBU || ARCH_ORION5X || COMPILE_TEST
+ select GENERIC_PHY
+diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
+index 89ecec13c567..4e83ece479d2 100644
+--- a/drivers/block/rbd.c
++++ b/drivers/block/rbd.c
+@@ -2712,7 +2712,7 @@ static int rbd_img_obj_parent_read_full(struct rbd_obj_request *obj_request)
+ * from the parent.
+ */
+ page_count = (u32)calc_pages_for(0, length);
+- pages = ceph_alloc_page_vector(page_count, GFP_KERNEL);
++ pages = ceph_alloc_page_vector(page_count, GFP_NOIO);
+ if (IS_ERR(pages)) {
+ result = PTR_ERR(pages);
+ pages = NULL;
+@@ -2839,7 +2839,7 @@ static int rbd_img_obj_exists_submit(struct rbd_obj_request *obj_request)
+ */
+ size = sizeof (__le64) + sizeof (__le32) + sizeof (__le32);
+ page_count = (u32)calc_pages_for(0, size);
+- pages = ceph_alloc_page_vector(page_count, GFP_KERNEL);
++ pages = ceph_alloc_page_vector(page_count, GFP_NOIO);
+ if (IS_ERR(pages))
+ return PTR_ERR(pages);
+
+diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
+index 1d8c6cb89c7f..c5f0e2b7668c 100644
+--- a/drivers/block/xen-blkback/blkback.c
++++ b/drivers/block/xen-blkback/blkback.c
+@@ -1394,33 +1394,34 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
+ static void make_response(struct xen_blkif *blkif, u64 id,
+ unsigned short op, int st)
+ {
+- struct blkif_response resp;
++ struct blkif_response *resp;
+ unsigned long flags;
+ union blkif_back_rings *blk_rings = &blkif->blk_rings;
+ int notify;
+
+- resp.id = id;
+- resp.operation = op;
+- resp.status = st;
+-
+ spin_lock_irqsave(&blkif->blk_ring_lock, flags);
+ /* Place on the response ring for the relevant domain. */
+ switch (blkif->blk_protocol) {
+ case BLKIF_PROTOCOL_NATIVE:
+- memcpy(RING_GET_RESPONSE(&blk_rings->native, blk_rings->native.rsp_prod_pvt),
+- &resp, sizeof(resp));
++ resp = RING_GET_RESPONSE(&blk_rings->native,
++ blk_rings->native.rsp_prod_pvt);
+ break;
+ case BLKIF_PROTOCOL_X86_32:
+- memcpy(RING_GET_RESPONSE(&blk_rings->x86_32, blk_rings->x86_32.rsp_prod_pvt),
+- &resp, sizeof(resp));
++ resp = RING_GET_RESPONSE(&blk_rings->x86_32,
++ blk_rings->x86_32.rsp_prod_pvt);
+ break;
+ case BLKIF_PROTOCOL_X86_64:
+- memcpy(RING_GET_RESPONSE(&blk_rings->x86_64, blk_rings->x86_64.rsp_prod_pvt),
+- &resp, sizeof(resp));
++ resp = RING_GET_RESPONSE(&blk_rings->x86_64,
++ blk_rings->x86_64.rsp_prod_pvt);
+ break;
+ default:
+ BUG();
+ }
++
++ resp->id = id;
++ resp->operation = op;
++ resp->status = st;
++
+ blk_rings->common.rsp_prod_pvt++;
+ RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&blk_rings->common, notify);
+ spin_unlock_irqrestore(&blkif->blk_ring_lock, flags);
+diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h
+index f620b5d3f77c..5fa081c7ef8e 100644
+--- a/drivers/block/xen-blkback/common.h
++++ b/drivers/block/xen-blkback/common.h
+@@ -64,9 +64,8 @@
+ struct blkif_common_request {
+ char dummy;
+ };
+-struct blkif_common_response {
+- char dummy;
+-};
++
++/* i386 protocol version */
+
+ struct blkif_x86_32_request_rw {
+ uint8_t nr_segments; /* number of segments */
+@@ -118,14 +117,6 @@ struct blkif_x86_32_request {
+ } u;
+ } __attribute__((__packed__));
+
+-/* i386 protocol version */
+-#pragma pack(push, 4)
+-struct blkif_x86_32_response {
+- uint64_t id; /* copied from request */
+- uint8_t operation; /* copied from request */
+- int16_t status; /* BLKIF_RSP_??? */
+-};
+-#pragma pack(pop)
+ /* x86_64 protocol version */
+
+ struct blkif_x86_64_request_rw {
+@@ -182,18 +173,12 @@ struct blkif_x86_64_request {
+ } u;
+ } __attribute__((__packed__));
+
+-struct blkif_x86_64_response {
+- uint64_t __attribute__((__aligned__(8))) id;
+- uint8_t operation; /* copied from request */
+- int16_t status; /* BLKIF_RSP_??? */
+-};
+-
+ DEFINE_RING_TYPES(blkif_common, struct blkif_common_request,
+- struct blkif_common_response);
++ struct blkif_response);
+ DEFINE_RING_TYPES(blkif_x86_32, struct blkif_x86_32_request,
+- struct blkif_x86_32_response);
++ struct blkif_response __packed);
+ DEFINE_RING_TYPES(blkif_x86_64, struct blkif_x86_64_request,
+- struct blkif_x86_64_response);
++ struct blkif_response);
+
+ union blkif_back_rings {
+ struct blkif_back_ring native;
+diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
+index 5da703c65d93..e10f28fc50ee 100644
+--- a/drivers/char/ipmi/ipmi_msghandler.c
++++ b/drivers/char/ipmi/ipmi_msghandler.c
+@@ -4019,7 +4019,8 @@ smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg,
+ }
+
+ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
+- struct list_head *timeouts, long timeout_period,
++ struct list_head *timeouts,
++ unsigned long timeout_period,
+ int slot, unsigned long *flags,
+ unsigned int *waiting_msgs)
+ {
+@@ -4032,8 +4033,8 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
+ if (!ent->inuse)
+ return;
+
+- ent->timeout -= timeout_period;
+- if (ent->timeout > 0) {
++ if (timeout_period < ent->timeout) {
++ ent->timeout -= timeout_period;
+ (*waiting_msgs)++;
+ return;
+ }
+@@ -4099,7 +4100,8 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
+ }
+ }
+
+-static unsigned int ipmi_timeout_handler(ipmi_smi_t intf, long timeout_period)
++static unsigned int ipmi_timeout_handler(ipmi_smi_t intf,
++ unsigned long timeout_period)
+ {
+ struct list_head timeouts;
+ struct ipmi_recv_msg *msg, *msg2;
+diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
+index 220ee49633e4..897ec0f8d718 100644
+--- a/drivers/dma/dmatest.c
++++ b/drivers/dma/dmatest.c
+@@ -634,6 +634,7 @@ static int dmatest_func(void *data)
+ * free it this time?" dancing. For now, just
+ * leave it dangling.
+ */
++ WARN(1, "dmatest: Kernel stack may be corrupted!!\n");
+ dmaengine_unmap_put(um);
+ result("test timed out", total_tests, src_off, dst_off,
+ len, 0);
+diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
+index 11c6757b6c40..ccb21f2b8cbf 100644
+--- a/drivers/extcon/extcon-palmas.c
++++ b/drivers/extcon/extcon-palmas.c
+@@ -150,6 +150,11 @@ static int palmas_usb_probe(struct platform_device *pdev)
+ struct palmas_usb *palmas_usb;
+ int status;
+
++ if (!palmas) {
++ dev_err(&pdev->dev, "failed to get valid parent\n");
++ return -EINVAL;
++ }
++
+ palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL);
+ if (!palmas_usb)
+ return -ENOMEM;
+diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
+index 48f7359e2a6b..2859161f3478 100644
+--- a/drivers/gpu/drm/drm_drv.c
++++ b/drivers/gpu/drm/drm_drv.c
+@@ -325,7 +325,7 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
+ ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
+ if (ret) {
+ DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
+- return ret;
++ goto err_debugfs;
+ }
+
+ ret = device_add(minor->kdev);
+diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c
+index f6b283b8375e..d8352e47774d 100644
+--- a/drivers/gpu/drm/mgag200/mgag200_main.c
++++ b/drivers/gpu/drm/mgag200/mgag200_main.c
+@@ -138,6 +138,8 @@ static int mga_vram_init(struct mga_device *mdev)
+ }
+
+ mem = pci_iomap(mdev->dev->pdev, 0, 0);
++ if (!mem)
++ return -ENOMEM;
+
+ mdev->mc.vram_size = mga_probe_vram(mdev, mem);
+
+diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
+index 4a45ae01cc3e..258ec8644dee 100644
+--- a/drivers/gpu/drm/msm/msm_gem_submit.c
++++ b/drivers/gpu/drm/msm/msm_gem_submit.c
+@@ -34,10 +34,13 @@ static inline void __user *to_user_ptr(u64 address)
+ }
+
+ static struct msm_gem_submit *submit_create(struct drm_device *dev,
+- struct msm_gpu *gpu, int nr)
++ struct msm_gpu *gpu, uint32_t nr)
+ {
+ struct msm_gem_submit *submit;
+- int sz = sizeof(*submit) + (nr * sizeof(submit->bos[0]));
++ uint64_t sz = sizeof(*submit) + ((u64)nr * sizeof(submit->bos[0]));
++
++ if (sz > SIZE_MAX)
++ return NULL;
+
+ submit = kmalloc(sz, GFP_TEMPORARY | __GFP_NOWARN | __GFP_NORETRY);
+ if (submit) {
+diff --git a/drivers/gpu/drm/sti/sti_vtg.c b/drivers/gpu/drm/sti/sti_vtg.c
+index 9564f2568e2c..73d49d0eb05d 100644
+--- a/drivers/gpu/drm/sti/sti_vtg.c
++++ b/drivers/gpu/drm/sti/sti_vtg.c
+@@ -328,6 +328,10 @@ static int vtg_probe(struct platform_device *pdev)
+ return -ENOMEM;
+ }
+ vtg->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
++ if (!vtg->regs) {
++ DRM_ERROR("failed to remap I/O memory\n");
++ return -ENOMEM;
++ }
+
+ np = of_parse_phandle(pdev->dev.of_node, "st,slave", 0);
+ if (np) {
+diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c
+index d7e3af671543..d8803c3bbfdc 100644
+--- a/drivers/i2c/busses/i2c-riic.c
++++ b/drivers/i2c/busses/i2c-riic.c
+@@ -80,6 +80,7 @@
+ #define ICIER_TEIE 0x40
+ #define ICIER_RIE 0x20
+ #define ICIER_NAKIE 0x10
++#define ICIER_SPIE 0x08
+
+ #define ICSR2_NACKF 0x10
+
+@@ -216,11 +217,10 @@ static irqreturn_t riic_tend_isr(int irq, void *data)
+ return IRQ_NONE;
+ }
+
+- if (riic->is_last || riic->err)
++ if (riic->is_last || riic->err) {
++ riic_clear_set_bit(riic, 0, ICIER_SPIE, RIIC_ICIER);
+ writeb(ICCR2_SP, riic->base + RIIC_ICCR2);
+-
+- writeb(0, riic->base + RIIC_ICIER);
+- complete(&riic->msg_done);
++ }
+
+ return IRQ_HANDLED;
+ }
+@@ -240,13 +240,13 @@ static irqreturn_t riic_rdrf_isr(int irq, void *data)
+
+ if (riic->bytes_left == 1) {
+ /* STOP must come before we set ACKBT! */
+- if (riic->is_last)
++ if (riic->is_last) {
++ riic_clear_set_bit(riic, 0, ICIER_SPIE, RIIC_ICIER);
+ writeb(ICCR2_SP, riic->base + RIIC_ICCR2);
++ }
+
+ riic_clear_set_bit(riic, 0, ICMR3_ACKBT, RIIC_ICMR3);
+
+- writeb(0, riic->base + RIIC_ICIER);
+- complete(&riic->msg_done);
+ } else {
+ riic_clear_set_bit(riic, ICMR3_ACKBT, 0, RIIC_ICMR3);
+ }
+@@ -259,6 +259,21 @@ static irqreturn_t riic_rdrf_isr(int irq, void *data)
+ return IRQ_HANDLED;
+ }
+
++static irqreturn_t riic_stop_isr(int irq, void *data)
++{
++ struct riic_dev *riic = data;
++
++ /* read back registers to confirm writes have fully propagated */
++ writeb(0, riic->base + RIIC_ICSR2);
++ readb(riic->base + RIIC_ICSR2);
++ writeb(0, riic->base + RIIC_ICIER);
++ readb(riic->base + RIIC_ICIER);
++
++ complete(&riic->msg_done);
++
++ return IRQ_HANDLED;
++}
++
+ static u32 riic_func(struct i2c_adapter *adap)
+ {
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+@@ -326,6 +341,7 @@ static struct riic_irq_desc riic_irqs[] = {
+ { .res_num = 0, .isr = riic_tend_isr, .name = "riic-tend" },
+ { .res_num = 1, .isr = riic_rdrf_isr, .name = "riic-rdrf" },
+ { .res_num = 2, .isr = riic_tdre_isr, .name = "riic-tdre" },
++ { .res_num = 3, .isr = riic_stop_isr, .name = "riic-stop" },
+ { .res_num = 5, .isr = riic_tend_isr, .name = "riic-nack" },
+ };
+
+diff --git a/drivers/iio/trigger/iio-trig-interrupt.c b/drivers/iio/trigger/iio-trig-interrupt.c
+index 572bc6f02ca8..e18f12b74610 100644
+--- a/drivers/iio/trigger/iio-trig-interrupt.c
++++ b/drivers/iio/trigger/iio-trig-interrupt.c
+@@ -58,7 +58,7 @@ static int iio_interrupt_trigger_probe(struct platform_device *pdev)
+ trig_info = kzalloc(sizeof(*trig_info), GFP_KERNEL);
+ if (!trig_info) {
+ ret = -ENOMEM;
+- goto error_put_trigger;
++ goto error_free_trigger;
+ }
+ iio_trigger_set_drvdata(trig, trig_info);
+ trig_info->irq = irq;
+@@ -83,8 +83,8 @@ error_release_irq:
+ free_irq(irq, trig);
+ error_free_trig_info:
+ kfree(trig_info);
+-error_put_trigger:
+- iio_trigger_put(trig);
++error_free_trigger:
++ iio_trigger_free(trig);
+ error_ret:
+ return ret;
+ }
+@@ -99,7 +99,7 @@ static int iio_interrupt_trigger_remove(struct platform_device *pdev)
+ iio_trigger_unregister(trig);
+ free_irq(trig_info->irq, trig);
+ kfree(trig_info);
+- iio_trigger_put(trig);
++ iio_trigger_free(trig);
+
+ return 0;
+ }
+diff --git a/drivers/iio/trigger/iio-trig-sysfs.c b/drivers/iio/trigger/iio-trig-sysfs.c
+index 3dfab2bc6d69..202e8b89caf2 100644
+--- a/drivers/iio/trigger/iio-trig-sysfs.c
++++ b/drivers/iio/trigger/iio-trig-sysfs.c
+@@ -174,7 +174,7 @@ static int iio_sysfs_trigger_probe(int id)
+ return 0;
+
+ out2:
+- iio_trigger_put(t->trig);
++ iio_trigger_free(t->trig);
+ free_t:
+ kfree(t);
+ out1:
+diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+index 2e61df01c0ac..082c1a2b93af 100644
+--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
++++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+@@ -1362,7 +1362,7 @@ static void ipoib_cm_tx_reap(struct work_struct *work)
+
+ while (!list_empty(&priv->cm.reap_list)) {
+ p = list_entry(priv->cm.reap_list.next, typeof(*p), list);
+- list_del(&p->list);
++ list_del_init(&p->list);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ netif_tx_unlock_bh(dev);
+ ipoib_cm_tx_destroy(p);
+diff --git a/drivers/input/keyboard/mpr121_touchkey.c b/drivers/input/keyboard/mpr121_touchkey.c
+index 3aa2ec45bcab..b5e7317ee1c1 100644
+--- a/drivers/input/keyboard/mpr121_touchkey.c
++++ b/drivers/input/keyboard/mpr121_touchkey.c
+@@ -87,7 +87,8 @@ static irqreturn_t mpr_touchkey_interrupt(int irq, void *dev_id)
+ struct mpr121_touchkey *mpr121 = dev_id;
+ struct i2c_client *client = mpr121->client;
+ struct input_dev *input = mpr121->input_dev;
+- unsigned int key_num, key_val, pressed;
++ unsigned long bit_changed;
++ unsigned int key_num;
+ int reg;
+
+ reg = i2c_smbus_read_byte_data(client, ELE_TOUCH_STATUS_1_ADDR);
+@@ -105,18 +106,22 @@ static irqreturn_t mpr_touchkey_interrupt(int irq, void *dev_id)
+
+ reg &= TOUCH_STATUS_MASK;
+ /* use old press bit to figure out which bit changed */
+- key_num = ffs(reg ^ mpr121->statusbits) - 1;
+- pressed = reg & (1 << key_num);
++ bit_changed = reg ^ mpr121->statusbits;
+ mpr121->statusbits = reg;
++ for_each_set_bit(key_num, &bit_changed, mpr121->keycount) {
++ unsigned int key_val, pressed;
+
+- key_val = mpr121->keycodes[key_num];
++ pressed = reg & BIT(key_num);
++ key_val = mpr121->keycodes[key_num];
+
+- input_event(input, EV_MSC, MSC_SCAN, key_num);
+- input_report_key(input, key_val, pressed);
+- input_sync(input);
++ input_event(input, EV_MSC, MSC_SCAN, key_num);
++ input_report_key(input, key_val, pressed);
++
++ dev_dbg(&client->dev, "key %d %d %s\n", key_num, key_val,
++ pressed ? "pressed" : "released");
+
+- dev_dbg(&client->dev, "key %d %d %s\n", key_num, key_val,
+- pressed ? "pressed" : "released");
++ }
++ input_sync(input);
+
+ out:
+ return IRQ_HANDLED;
+@@ -231,6 +236,7 @@ static int mpr_touchkey_probe(struct i2c_client *client,
+ input_dev->id.bustype = BUS_I2C;
+ input_dev->dev.parent = &client->dev;
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
++ input_set_capability(input_dev, EV_MSC, MSC_SCAN);
+
+ input_dev->keycode = mpr121->keycodes;
+ input_dev->keycodesize = sizeof(mpr121->keycodes[0]);
+diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
+index f4e8fbec6a94..b5304e264881 100644
+--- a/drivers/input/misc/ims-pcu.c
++++ b/drivers/input/misc/ims-pcu.c
+@@ -1635,13 +1635,25 @@ ims_pcu_get_cdc_union_desc(struct usb_interface *intf)
+ return NULL;
+ }
+
+- while (buflen > 0) {
++ while (buflen >= sizeof(*union_desc)) {
+ union_desc = (struct usb_cdc_union_desc *)buf;
+
++ if (union_desc->bLength > buflen) {
++ dev_err(&intf->dev, "Too large descriptor\n");
++ return NULL;
++ }
++
+ if (union_desc->bDescriptorType == USB_DT_CS_INTERFACE &&
+ union_desc->bDescriptorSubType == USB_CDC_UNION_TYPE) {
+ dev_dbg(&intf->dev, "Found union header\n");
+- return union_desc;
++
++ if (union_desc->bLength >= sizeof(*union_desc))
++ return union_desc;
++
++ dev_err(&intf->dev,
++ "Union descriptor to short (%d vs %zd\n)",
++ union_desc->bLength, sizeof(*union_desc));
++ return NULL;
+ }
+
+ buflen -= union_desc->bLength;
+diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
+index 5f92ec23bb07..2621a045dfa8 100644
+--- a/drivers/media/i2c/adv7604.c
++++ b/drivers/media/i2c/adv7604.c
+@@ -2669,6 +2669,9 @@ static int adv76xx_parse_dt(struct adv76xx_state *state)
+ state->pdata.alt_data_sat = 1;
+ state->pdata.op_format_mode_sel = ADV7604_OP_FORMAT_MODE0;
+ state->pdata.bus_order = ADV7604_BUS_ORDER_RGB;
++ state->pdata.dr_str_data = ADV76XX_DR_STR_MEDIUM_HIGH;
++ state->pdata.dr_str_clk = ADV76XX_DR_STR_MEDIUM_HIGH;
++ state->pdata.dr_str_sync = ADV76XX_DR_STR_MEDIUM_HIGH;
+
+ return 0;
+ }
+diff --git a/drivers/media/pci/bt8xx/dvb-bt8xx.c b/drivers/media/pci/bt8xx/dvb-bt8xx.c
+index d407244fd1bc..bd0f5b195188 100644
+--- a/drivers/media/pci/bt8xx/dvb-bt8xx.c
++++ b/drivers/media/pci/bt8xx/dvb-bt8xx.c
+@@ -680,6 +680,7 @@ static void frontend_init(struct dvb_bt8xx_card *card, u32 type)
+ /* DST is not a frontend, attaching the ASIC */
+ if (dvb_attach(dst_attach, state, &card->dvb_adapter) == NULL) {
+ pr_err("%s: Could not find a Twinhan DST\n", __func__);
++ kfree(state);
+ break;
+ }
+ /* Attach other DST peripherals if any */
+diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c
+index 49658ca39e51..a851f20dca23 100644
+--- a/drivers/media/platform/exynos4-is/fimc-is.c
++++ b/drivers/media/platform/exynos4-is/fimc-is.c
+@@ -815,12 +815,13 @@ static int fimc_is_probe(struct platform_device *pdev)
+ is->irq = irq_of_parse_and_map(dev->of_node, 0);
+ if (!is->irq) {
+ dev_err(dev, "no irq found\n");
+- return -EINVAL;
++ ret = -EINVAL;
++ goto err_iounmap;
+ }
+
+ ret = fimc_is_get_clocks(is);
+ if (ret < 0)
+- return ret;
++ goto err_iounmap;
+
+ platform_set_drvdata(pdev, is);
+
+@@ -880,6 +881,8 @@ err_irq:
+ free_irq(is->irq, is);
+ err_clk:
+ fimc_is_put_clocks(is);
++err_iounmap:
++ iounmap(is->pmu_regs);
+ return ret;
+ }
+
+@@ -935,6 +938,7 @@ static int fimc_is_remove(struct platform_device *pdev)
+ fimc_is_unregister_subdevs(is);
+ vb2_dma_contig_cleanup_ctx(is->alloc_ctx);
+ fimc_is_put_clocks(is);
++ iounmap(is->pmu_regs);
+ fimc_is_debugfs_remove(is);
+ release_firmware(is->fw.f_w);
+ fimc_is_free_cpu_memory(is);
+diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
+index eb9e7feb9b13..7a16e9ea041c 100644
+--- a/drivers/media/rc/imon.c
++++ b/drivers/media/rc/imon.c
+@@ -2419,6 +2419,11 @@ static int imon_probe(struct usb_interface *interface,
+ mutex_lock(&driver_lock);
+
+ first_if = usb_ifnum_to_if(usbdev, 0);
++ if (!first_if) {
++ ret = -ENODEV;
++ goto fail;
++ }
++
+ first_if_ctx = usb_get_intfdata(first_if);
+
+ if (ifnum == 0) {
+diff --git a/drivers/media/usb/cx231xx/cx231xx-core.c b/drivers/media/usb/cx231xx/cx231xx-core.c
+index e42bde081cd7..ae055466fc01 100644
+--- a/drivers/media/usb/cx231xx/cx231xx-core.c
++++ b/drivers/media/usb/cx231xx/cx231xx-core.c
+@@ -356,7 +356,12 @@ int cx231xx_send_vendor_cmd(struct cx231xx *dev,
+ */
+ if ((ven_req->wLength > 4) && ((ven_req->bRequest == 0x4) ||
+ (ven_req->bRequest == 0x5) ||
+- (ven_req->bRequest == 0x6))) {
++ (ven_req->bRequest == 0x6) ||
++
++ /* Internal Master 3 Bus can send
++ * and receive only 4 bytes per time
++ */
++ (ven_req->bRequest == 0x2))) {
+ unsend_size = 0;
+ pdata = ven_req->pBuff;
+
+diff --git a/drivers/media/usb/dvb-usb/dib0700_devices.c b/drivers/media/usb/dvb-usb/dib0700_devices.c
+index c170523226aa..0d7565158207 100644
+--- a/drivers/media/usb/dvb-usb/dib0700_devices.c
++++ b/drivers/media/usb/dvb-usb/dib0700_devices.c
+@@ -292,7 +292,7 @@ static int stk7700P2_frontend_attach(struct dvb_usb_adapter *adap)
+ stk7700d_dib7000p_mt2266_config)
+ != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+ }
+@@ -326,7 +326,7 @@ static int stk7700d_frontend_attach(struct dvb_usb_adapter *adap)
+ stk7700d_dib7000p_mt2266_config)
+ != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+ }
+@@ -479,7 +479,7 @@ static int stk7700ph_frontend_attach(struct dvb_usb_adapter *adap)
+ &stk7700ph_dib7700_xc3028_config) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n",
+ __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+
+@@ -1010,7 +1010,7 @@ static int stk7070p_frontend_attach(struct dvb_usb_adapter *adap)
+ &dib7070p_dib7000p_config) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n",
+ __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+
+@@ -1068,7 +1068,7 @@ static int stk7770p_frontend_attach(struct dvb_usb_adapter *adap)
+ &dib7770p_dib7000p_config) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n",
+ __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+
+@@ -3036,7 +3036,7 @@ static int nim7090_frontend_attach(struct dvb_usb_adapter *adap)
+
+ if (state->dib7000p_ops.i2c_enumeration(&adap->dev->i2c_adap, 1, 0x10, &nim7090_dib7000p_config) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+ adap->fe_adap[0].fe = state->dib7000p_ops.init(&adap->dev->i2c_adap, 0x80, &nim7090_dib7000p_config);
+@@ -3089,7 +3089,7 @@ static int tfe7090pvr_frontend0_attach(struct dvb_usb_adapter *adap)
+ /* initialize IC 0 */
+ if (state->dib7000p_ops.i2c_enumeration(&adap->dev->i2c_adap, 1, 0x20, &tfe7090pvr_dib7000p_config[0]) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+
+@@ -3119,7 +3119,7 @@ static int tfe7090pvr_frontend1_attach(struct dvb_usb_adapter *adap)
+ i2c = state->dib7000p_ops.get_i2c_master(adap->dev->adapter[0].fe_adap[0].fe, DIBX000_I2C_INTERFACE_GPIO_6_7, 1);
+ if (state->dib7000p_ops.i2c_enumeration(i2c, 1, 0x10, &tfe7090pvr_dib7000p_config[1]) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+
+@@ -3194,7 +3194,7 @@ static int tfe7790p_frontend_attach(struct dvb_usb_adapter *adap)
+ 1, 0x10, &tfe7790p_dib7000p_config) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n",
+ __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+ adap->fe_adap[0].fe = state->dib7000p_ops.init(&adap->dev->i2c_adap,
+@@ -3289,7 +3289,7 @@ static int stk7070pd_frontend_attach0(struct dvb_usb_adapter *adap)
+ stk7070pd_dib7000p_config) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n",
+ __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+
+@@ -3364,7 +3364,7 @@ static int novatd_frontend_attach(struct dvb_usb_adapter *adap)
+ stk7070pd_dib7000p_config) != 0) {
+ err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n",
+ __func__);
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+ }
+@@ -3600,7 +3600,7 @@ static int pctv340e_frontend_attach(struct dvb_usb_adapter *adap)
+
+ if (state->dib7000p_ops.dib7000pc_detection(&adap->dev->i2c_adap) == 0) {
+ /* Demodulator not found for some reason? */
+- dvb_detach(&state->dib7000p_ops);
++ dvb_detach(state->dib7000p_ops.set_wbd_ref);
+ return -ENODEV;
+ }
+
+diff --git a/drivers/mfd/ab8500-sysctrl.c b/drivers/mfd/ab8500-sysctrl.c
+index 0d1825696153..405ce78c1ef4 100644
+--- a/drivers/mfd/ab8500-sysctrl.c
++++ b/drivers/mfd/ab8500-sysctrl.c
+@@ -99,7 +99,7 @@ int ab8500_sysctrl_read(u16 reg, u8 *value)
+ u8 bank;
+
+ if (sysctrl_dev == NULL)
+- return -EINVAL;
++ return -EPROBE_DEFER;
+
+ bank = (reg >> 8);
+ if (!valid_bank(bank))
+@@ -115,11 +115,13 @@ int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value)
+ u8 bank;
+
+ if (sysctrl_dev == NULL)
+- return -EINVAL;
++ return -EPROBE_DEFER;
+
+ bank = (reg >> 8);
+- if (!valid_bank(bank))
++ if (!valid_bank(bank)) {
++ pr_err("invalid bank\n");
+ return -EINVAL;
++ }
+
+ return abx500_mask_and_set_register_interruptible(sysctrl_dev, bank,
+ (u8)(reg & 0xFF), mask, value);
+@@ -180,9 +182,15 @@ static int ab8500_sysctrl_remove(struct platform_device *pdev)
+ return 0;
+ }
+
++static const struct of_device_id ab8500_sysctrl_match[] = {
++ { .compatible = "stericsson,ab8500-sysctrl", },
++ {}
++};
++
+ static struct platform_driver ab8500_sysctrl_driver = {
+ .driver = {
+ .name = "ab8500-sysctrl",
++ .of_match_table = ab8500_sysctrl_match,
+ },
+ .probe = ab8500_sysctrl_probe,
+ .remove = ab8500_sysctrl_remove,
+diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
+index 94cddf381ba3..5186ac611564 100644
+--- a/drivers/mmc/host/s3cmci.c
++++ b/drivers/mmc/host/s3cmci.c
+@@ -21,6 +21,7 @@
+ #include <linux/debugfs.h>
+ #include <linux/seq_file.h>
+ #include <linux/gpio.h>
++#include <linux/interrupt.h>
+ #include <linux/irq.h>
+ #include <linux/io.h>
+
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index 9ba92e23e67f..16f9c742bc30 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -3151,7 +3151,7 @@ u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb)
+ hash ^= (hash >> 16);
+ hash ^= (hash >> 8);
+
+- return hash;
++ return hash >> 1;
+ }
+
+ /*-------------------------- Device entry points ----------------------------*/
+diff --git a/drivers/net/can/c_can/c_can_pci.c b/drivers/net/can/c_can/c_can_pci.c
+index cf7c18947189..d065c0e2d18e 100644
+--- a/drivers/net/can/c_can/c_can_pci.c
++++ b/drivers/net/can/c_can/c_can_pci.c
+@@ -178,7 +178,6 @@ static int c_can_pci_probe(struct pci_dev *pdev,
+ break;
+ case BOSCH_D_CAN:
+ priv->regs = reg_map_d_can;
+- priv->can.ctrlmode_supported |= CAN_CTRLMODE_3_SAMPLES;
+ break;
+ default:
+ ret = -EINVAL;
+diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
+index e36d10520e24..717530eac70c 100644
+--- a/drivers/net/can/c_can/c_can_platform.c
++++ b/drivers/net/can/c_can/c_can_platform.c
+@@ -320,7 +320,6 @@ static int c_can_plat_probe(struct platform_device *pdev)
+ break;
+ case BOSCH_D_CAN:
+ priv->regs = reg_map_d_can;
+- priv->can.ctrlmode_supported |= CAN_CTRLMODE_3_SAMPLES;
+ priv->read_reg = c_can_plat_read_reg_aligned_to_16bit;
+ priv->write_reg = c_can_plat_write_reg_aligned_to_16bit;
+ priv->read_reg32 = d_can_plat_read_reg32;
+diff --git a/drivers/net/ethernet/fealnx.c b/drivers/net/ethernet/fealnx.c
+index b1b9ebafb354..a3b2e23921bf 100644
+--- a/drivers/net/ethernet/fealnx.c
++++ b/drivers/net/ethernet/fealnx.c
+@@ -257,8 +257,8 @@ enum rx_desc_status_bits {
+ RXFSD = 0x00000800, /* first descriptor */
+ RXLSD = 0x00000400, /* last descriptor */
+ ErrorSummary = 0x80, /* error summary */
+- RUNT = 0x40, /* runt packet received */
+- LONG = 0x20, /* long packet received */
++ RUNTPKT = 0x40, /* runt packet received */
++ LONGPKT = 0x20, /* long packet received */
+ FAE = 0x10, /* frame align error */
+ CRC = 0x08, /* crc error */
+ RXER = 0x04, /* receive error */
+@@ -1633,7 +1633,7 @@ static int netdev_rx(struct net_device *dev)
+ dev->name, rx_status);
+
+ dev->stats.rx_errors++; /* end of a packet. */
+- if (rx_status & (LONG | RUNT))
++ if (rx_status & (LONGPKT | RUNTPKT))
+ dev->stats.rx_length_errors++;
+ if (rx_status & RXER)
+ dev->stats.rx_frame_errors++;
+diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_mbx.c b/drivers/net/ethernet/intel/fm10k/fm10k_mbx.c
+index 1b2738380518..a00fd1a44393 100644
+--- a/drivers/net/ethernet/intel/fm10k/fm10k_mbx.c
++++ b/drivers/net/ethernet/intel/fm10k/fm10k_mbx.c
+@@ -1967,9 +1967,10 @@ static void fm10k_sm_mbx_create_reply(struct fm10k_hw *hw,
+ * function can also be used to respond to an error as the connection
+ * resetting would also be a means of dealing with errors.
+ **/
+-static void fm10k_sm_mbx_process_reset(struct fm10k_hw *hw,
+- struct fm10k_mbx_info *mbx)
++static s32 fm10k_sm_mbx_process_reset(struct fm10k_hw *hw,
++ struct fm10k_mbx_info *mbx)
+ {
++ s32 err = 0;
+ const enum fm10k_mbx_state state = mbx->state;
+
+ switch (state) {
+@@ -1982,6 +1983,7 @@ static void fm10k_sm_mbx_process_reset(struct fm10k_hw *hw,
+ case FM10K_STATE_OPEN:
+ /* flush any incomplete work */
+ fm10k_sm_mbx_connect_reset(mbx);
++ err = FM10K_ERR_RESET_REQUESTED;
+ break;
+ case FM10K_STATE_CONNECT:
+ /* Update remote value to match local value */
+@@ -1991,6 +1993,8 @@ static void fm10k_sm_mbx_process_reset(struct fm10k_hw *hw,
+ }
+
+ fm10k_sm_mbx_create_reply(hw, mbx, mbx->tail);
++
++ return err;
+ }
+
+ /**
+@@ -2071,7 +2075,7 @@ static s32 fm10k_sm_mbx_process(struct fm10k_hw *hw,
+
+ switch (FM10K_MSG_HDR_FIELD_GET(mbx->mbx_hdr, SM_VER)) {
+ case 0:
+- fm10k_sm_mbx_process_reset(hw, mbx);
++ err = fm10k_sm_mbx_process_reset(hw, mbx);
+ break;
+ case FM10K_SM_MBX_VERSION:
+ err = fm10k_sm_mbx_process_version_1(hw, mbx);
+diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
+index df9fda38bdd1..0b5938834703 100644
+--- a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
++++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
+@@ -990,6 +990,7 @@ static irqreturn_t fm10k_msix_mbx_pf(int __always_unused irq, void *data)
+ struct fm10k_hw *hw = &interface->hw;
+ struct fm10k_mbx_info *mbx = &hw->mbx;
+ u32 eicr;
++ s32 err = 0;
+
+ /* unmask any set bits related to this interrupt */
+ eicr = fm10k_read_reg(hw, FM10K_EICR);
+@@ -1005,12 +1006,15 @@ static irqreturn_t fm10k_msix_mbx_pf(int __always_unused irq, void *data)
+
+ /* service mailboxes */
+ if (fm10k_mbx_trylock(interface)) {
+- mbx->ops.process(hw, mbx);
++ err = mbx->ops.process(hw, mbx);
+ /* handle VFLRE events */
+ fm10k_iov_event(interface);
+ fm10k_mbx_unlock(interface);
+ }
+
++ if (err == FM10K_ERR_RESET_REQUESTED)
++ interface->flags |= FM10K_FLAG_RESET_REQUESTED;
++
+ /* if switch toggled state we should reset GLORTs */
+ if (eicr & FM10K_EICR_SWITCHNOTREADY) {
+ /* force link down for at least 4 seconds */
+diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
+index 0f69ef81751a..099bd0af6a4e 100644
+--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
++++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
+@@ -215,6 +215,17 @@ static s32 igb_init_phy_params_82575(struct e1000_hw *hw)
+ hw->bus.func = (rd32(E1000_STATUS) & E1000_STATUS_FUNC_MASK) >>
+ E1000_STATUS_FUNC_SHIFT;
+
++ /* Make sure the PHY is in a good state. Several people have reported
++ * firmware leaving the PHY's page select register set to something
++ * other than the default of zero, which causes the PHY ID read to
++ * access something other than the intended register.
++ */
++ ret_val = hw->phy.ops.reset(hw);
++ if (ret_val) {
++ hw_dbg("Error resetting the PHY.\n");
++ goto out;
++ }
++
+ /* Set phy->phy_addr and phy->id. */
+ ret_val = igb_get_phy_id_82575(hw);
+ if (ret_val)
+diff --git a/drivers/net/ethernet/intel/igb/e1000_i210.c b/drivers/net/ethernet/intel/igb/e1000_i210.c
+index 65d931669f81..89402fce7d79 100644
+--- a/drivers/net/ethernet/intel/igb/e1000_i210.c
++++ b/drivers/net/ethernet/intel/igb/e1000_i210.c
+@@ -699,9 +699,9 @@ static s32 igb_update_flash_i210(struct e1000_hw *hw)
+
+ ret_val = igb_pool_flash_update_done_i210(hw);
+ if (ret_val)
+- hw_dbg("Flash update complete\n");
+- else
+ hw_dbg("Flash update time out\n");
++ else
++ hw_dbg("Flash update complete\n");
+
+ out:
+ return ret_val;
+diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
+index 7dfbcde34509..b5a8a5e40870 100644
+--- a/drivers/net/ethernet/intel/igb/igb_main.c
++++ b/drivers/net/ethernet/intel/igb/igb_main.c
+@@ -3167,7 +3167,9 @@ static int __igb_close(struct net_device *netdev, bool suspending)
+
+ static int igb_close(struct net_device *netdev)
+ {
+- return __igb_close(netdev, false);
++ if (netif_device_present(netdev))
++ return __igb_close(netdev, false);
++ return 0;
+ }
+
+ /**
+@@ -7363,12 +7365,14 @@ static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake,
+ int retval = 0;
+ #endif
+
++ rtnl_lock();
+ netif_device_detach(netdev);
+
+ if (netif_running(netdev))
+ __igb_close(netdev, true);
+
+ igb_clear_interrupt_scheme(adapter);
++ rtnl_unlock();
+
+ #ifdef CONFIG_PM
+ retval = pci_save_state(pdev);
+@@ -7487,16 +7491,15 @@ static int igb_resume(struct device *dev)
+
+ wr32(E1000_WUS, ~0);
+
+- if (netdev->flags & IFF_UP) {
+- rtnl_lock();
++ rtnl_lock();
++ if (!err && netif_running(netdev))
+ err = __igb_open(netdev, true);
+- rtnl_unlock();
+- if (err)
+- return err;
+- }
+
+- netif_device_attach(netdev);
+- return 0;
++ if (!err)
++ netif_device_attach(netdev);
++ rtnl_unlock();
++
++ return err;
+ }
+
+ static int igb_runtime_idle(struct device *dev)
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
+index 68e1e757ecef..2582fa5d9cfc 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
+@@ -307,6 +307,7 @@ static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
+ ixgbe_cache_ring_rss(adapter);
+ }
+
++#define IXGBE_RSS_64Q_MASK 0x3F
+ #define IXGBE_RSS_16Q_MASK 0xF
+ #define IXGBE_RSS_8Q_MASK 0x7
+ #define IXGBE_RSS_4Q_MASK 0x3
+@@ -602,6 +603,7 @@ static bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
+ **/
+ static bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
+ {
++ struct ixgbe_hw *hw = &adapter->hw;
+ struct ixgbe_ring_feature *f;
+ u16 rss_i;
+
+@@ -610,7 +612,11 @@ static bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
+ rss_i = f->limit;
+
+ f->indices = rss_i;
+- f->mask = IXGBE_RSS_16Q_MASK;
++
++ if (hw->mac.type < ixgbe_mac_X550)
++ f->mask = IXGBE_RSS_16Q_MASK;
++ else
++ f->mask = IXGBE_RSS_64Q_MASK;
+
+ /* disable ATR by default, it will be configured below */
+ adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+index 463ff47200f1..2462b3c5fa40 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+@@ -5765,7 +5765,8 @@ static int ixgbe_close(struct net_device *netdev)
+
+ ixgbe_ptp_stop(adapter);
+
+- ixgbe_close_suspend(adapter);
++ if (netif_device_present(netdev))
++ ixgbe_close_suspend(adapter);
+
+ ixgbe_fdir_filter_exit(adapter);
+
+@@ -5810,14 +5811,12 @@ static int ixgbe_resume(struct pci_dev *pdev)
+ if (!err && netif_running(netdev))
+ err = ixgbe_open(netdev);
+
+- rtnl_unlock();
+-
+- if (err)
+- return err;
+
+- netif_device_attach(netdev);
++ if (!err)
++ netif_device_attach(netdev);
++ rtnl_unlock();
+
+- return 0;
++ return err;
+ }
+ #endif /* CONFIG_PM */
+
+@@ -5832,14 +5831,14 @@ static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
+ int retval = 0;
+ #endif
+
++ rtnl_lock();
+ netif_device_detach(netdev);
+
+- rtnl_lock();
+ if (netif_running(netdev))
+ ixgbe_close_suspend(adapter);
+- rtnl_unlock();
+
+ ixgbe_clear_interrupt_scheme(adapter);
++ rtnl_unlock();
+
+ #ifdef CONFIG_PM
+ retval = pci_save_state(pdev);
+@@ -8963,7 +8962,7 @@ skip_bad_vf_detection:
+ }
+
+ if (netif_running(netdev))
+- ixgbe_down(adapter);
++ ixgbe_close_suspend(adapter);
+
+ if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
+ pci_disable_device(pdev);
+@@ -9033,10 +9032,12 @@ static void ixgbe_io_resume(struct pci_dev *pdev)
+ }
+
+ #endif
++ rtnl_lock();
+ if (netif_running(netdev))
+- ixgbe_up(adapter);
++ ixgbe_open(netdev);
+
+ netif_device_attach(netdev);
++ rtnl_unlock();
+ }
+
+ static const struct pci_error_handlers ixgbe_err_handler = {
+diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
+index 2b212f3e140c..1f67ebf0e8ef 100644
+--- a/drivers/net/macvtap.c
++++ b/drivers/net/macvtap.c
+@@ -1059,6 +1059,8 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
+ case TUNSETSNDBUF:
+ if (get_user(s, sp))
+ return -EFAULT;
++ if (s <= 0)
++ return -EINVAL;
+
+ q->sk.sk_sndbuf = s;
+ return 0;
+diff --git a/drivers/net/tun.c b/drivers/net/tun.c
+index 12e67e0eb9c9..0bd2d20d22cb 100644
+--- a/drivers/net/tun.c
++++ b/drivers/net/tun.c
+@@ -1637,6 +1637,9 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
+
+ if (!dev)
+ return -ENOMEM;
++ err = dev_get_valid_name(net, dev, name);
++ if (err < 0)
++ goto err_free_dev;
+
+ dev_net_set(dev, net);
+ dev->rtnl_link_ops = &tun_link_ops;
+@@ -2017,6 +2020,10 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
+ ret = -EFAULT;
+ break;
+ }
++ if (sndbuf <= 0) {
++ ret = -EINVAL;
++ break;
++ }
+
+ tun->sndbuf = sndbuf;
+ tun_set_sndbuf(tun);
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index 480c9366d6b6..6cf881ce4d4e 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -316,7 +316,7 @@ next_desc:
+ }
+
+ /* errors aren't fatal - we can live with the dynamic address */
+- if (cdc_ether) {
++ if (cdc_ether && cdc_ether->wMaxSegmentSize) {
+ dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
+ usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
+ }
+diff --git a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+index ab9f55344acd..89d8109a8a47 100644
+--- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+@@ -4207,9 +4207,6 @@ static int brcmf_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *ndev)
+ err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_AP, 0);
+ if (err < 0)
+ brcmf_err("setting AP mode failed %d\n", err);
+- err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, 0);
+- if (err < 0)
+- brcmf_err("setting INFRA mode failed %d\n", err);
+ if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MBSS))
+ brcmf_fil_iovar_int_set(ifp, "mbss", 0);
+ err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_REGULATORY,
+diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
+index 7bd3c5a8116d..e683925220d1 100644
+--- a/drivers/net/xen-netback/netback.c
++++ b/drivers/net/xen-netback/netback.c
+@@ -67,6 +67,7 @@ module_param(rx_drain_timeout_msecs, uint, 0444);
+ unsigned int rx_stall_timeout_msecs = 60000;
+ module_param(rx_stall_timeout_msecs, uint, 0444);
+
++#define MAX_QUEUES_DEFAULT 8
+ unsigned int xenvif_max_queues;
+ module_param_named(max_queues, xenvif_max_queues, uint, 0644);
+ MODULE_PARM_DESC(max_queues,
+@@ -2011,11 +2012,12 @@ static int __init netback_init(void)
+ if (!xen_domain())
+ return -ENODEV;
+
+- /* Allow as many queues as there are CPUs if user has not
++ /* Allow as many queues as there are CPUs but max. 8 if user has not
+ * specified a value.
+ */
+ if (xenvif_max_queues == 0)
+- xenvif_max_queues = num_online_cpus();
++ xenvif_max_queues = min_t(unsigned int, MAX_QUEUES_DEFAULT,
++ num_online_cpus());
+
+ if (fatal_skb_slots < XEN_NETBK_LEGACY_SLOTS_MAX) {
+ pr_info("fatal_skb_slots too small (%d), bump it to XEN_NETBK_LEGACY_SLOTS_MAX (%d)\n",
+diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
+index 1ab863551920..4225d3d3198a 100644
+--- a/drivers/pci/host/pci-mvebu.c
++++ b/drivers/pci/host/pci-mvebu.c
+@@ -107,6 +107,12 @@ struct mvebu_pcie {
+ int nports;
+ };
+
++struct mvebu_pcie_window {
++ phys_addr_t base;
++ phys_addr_t remap;
++ size_t size;
++};
++
+ /* Structure representing one PCIe interface */
+ struct mvebu_pcie_port {
+ char *name;
+@@ -125,10 +131,8 @@ struct mvebu_pcie_port {
+ struct mvebu_sw_pci_bridge bridge;
+ struct device_node *dn;
+ struct mvebu_pcie *pcie;
+- phys_addr_t memwin_base;
+- size_t memwin_size;
+- phys_addr_t iowin_base;
+- size_t iowin_size;
++ struct mvebu_pcie_window memwin;
++ struct mvebu_pcie_window iowin;
+ u32 saved_pcie_stat;
+ };
+
+@@ -345,23 +349,45 @@ static void mvebu_pcie_add_windows(struct mvebu_pcie_port *port,
+ }
+ }
+
++static void mvebu_pcie_set_window(struct mvebu_pcie_port *port,
++ unsigned int target, unsigned int attribute,
++ const struct mvebu_pcie_window *desired,
++ struct mvebu_pcie_window *cur)
++{
++ if (desired->base == cur->base && desired->remap == cur->remap &&
++ desired->size == cur->size)
++ return;
++
++ if (cur->size != 0) {
++ mvebu_pcie_del_windows(port, cur->base, cur->size);
++ cur->size = 0;
++ cur->base = 0;
++
++ /*
++ * If something tries to change the window while it is enabled
++ * the change will not be done atomically. That would be
++ * difficult to do in the general case.
++ */
++ }
++
++ if (desired->size == 0)
++ return;
++
++ mvebu_pcie_add_windows(port, target, attribute, desired->base,
++ desired->size, desired->remap);
++ *cur = *desired;
++}
++
+ static void mvebu_pcie_handle_iobase_change(struct mvebu_pcie_port *port)
+ {
+- phys_addr_t iobase;
++ struct mvebu_pcie_window desired = {};
+
+ /* Are the new iobase/iolimit values invalid? */
+ if (port->bridge.iolimit < port->bridge.iobase ||
+ port->bridge.iolimitupper < port->bridge.iobaseupper ||
+ !(port->bridge.command & PCI_COMMAND_IO)) {
+-
+- /* If a window was configured, remove it */
+- if (port->iowin_base) {
+- mvebu_pcie_del_windows(port, port->iowin_base,
+- port->iowin_size);
+- port->iowin_base = 0;
+- port->iowin_size = 0;
+- }
+-
++ mvebu_pcie_set_window(port, port->io_target, port->io_attr,
++ &desired, &port->iowin);
+ return;
+ }
+
+@@ -378,32 +404,27 @@ static void mvebu_pcie_handle_iobase_change(struct mvebu_pcie_port *port)
+ * specifications. iobase is the bus address, port->iowin_base
+ * is the CPU address.
+ */
+- iobase = ((port->bridge.iobase & 0xF0) << 8) |
+- (port->bridge.iobaseupper << 16);
+- port->iowin_base = port->pcie->io.start + iobase;
+- port->iowin_size = ((0xFFF | ((port->bridge.iolimit & 0xF0) << 8) |
+- (port->bridge.iolimitupper << 16)) -
+- iobase) + 1;
+-
+- mvebu_pcie_add_windows(port, port->io_target, port->io_attr,
+- port->iowin_base, port->iowin_size,
+- iobase);
++ desired.remap = ((port->bridge.iobase & 0xF0) << 8) |
++ (port->bridge.iobaseupper << 16);
++ desired.base = port->pcie->io.start + desired.remap;
++ desired.size = ((0xFFF | ((port->bridge.iolimit & 0xF0) << 8) |
++ (port->bridge.iolimitupper << 16)) -
++ desired.remap) +
++ 1;
++
++ mvebu_pcie_set_window(port, port->io_target, port->io_attr, &desired,
++ &port->iowin);
+ }
+
+ static void mvebu_pcie_handle_membase_change(struct mvebu_pcie_port *port)
+ {
++ struct mvebu_pcie_window desired = {.remap = MVEBU_MBUS_NO_REMAP};
++
+ /* Are the new membase/memlimit values invalid? */
+ if (port->bridge.memlimit < port->bridge.membase ||
+ !(port->bridge.command & PCI_COMMAND_MEMORY)) {
+-
+- /* If a window was configured, remove it */
+- if (port->memwin_base) {
+- mvebu_pcie_del_windows(port, port->memwin_base,
+- port->memwin_size);
+- port->memwin_base = 0;
+- port->memwin_size = 0;
+- }
+-
++ mvebu_pcie_set_window(port, port->mem_target, port->mem_attr,
++ &desired, &port->memwin);
+ return;
+ }
+
+@@ -413,14 +434,12 @@ static void mvebu_pcie_handle_membase_change(struct mvebu_pcie_port *port)
+ * window to setup, according to the PCI-to-PCI bridge
+ * specifications.
+ */
+- port->memwin_base = ((port->bridge.membase & 0xFFF0) << 16);
+- port->memwin_size =
+- (((port->bridge.memlimit & 0xFFF0) << 16) | 0xFFFFF) -
+- port->memwin_base + 1;
+-
+- mvebu_pcie_add_windows(port, port->mem_target, port->mem_attr,
+- port->memwin_base, port->memwin_size,
+- MVEBU_MBUS_NO_REMAP);
++ desired.base = ((port->bridge.membase & 0xFFF0) << 16);
++ desired.size = (((port->bridge.memlimit & 0xFFF0) << 16) | 0xFFFFF) -
++ desired.base + 1;
++
++ mvebu_pcie_set_window(port, port->mem_target, port->mem_attr, &desired,
++ &port->memwin);
+ }
+
+ /*
+diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
+index af2046c87806..847f75601591 100644
+--- a/drivers/platform/x86/hp-wmi.c
++++ b/drivers/platform/x86/hp-wmi.c
+@@ -249,7 +249,7 @@ static int hp_wmi_display_state(void)
+ int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+ return state;
+ }
+
+@@ -259,7 +259,7 @@ static int hp_wmi_hddtemp_state(void)
+ int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+ return state;
+ }
+
+@@ -269,7 +269,7 @@ static int hp_wmi_als_state(void)
+ int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+ return state;
+ }
+
+@@ -280,7 +280,7 @@ static int hp_wmi_dock_state(void)
+ sizeof(state), sizeof(state));
+
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+
+ return state & 0x1;
+ }
+@@ -291,7 +291,7 @@ static int hp_wmi_tablet_state(void)
+ int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+- return ret;
++ return ret < 0 ? ret : -EINVAL;
+
+ return (state & 0x4) ? 1 : 0;
+ }
+@@ -324,7 +324,7 @@ static int __init hp_wmi_enable_hotkeys(void)
+ int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &value,
+ sizeof(value), 0);
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+ return 0;
+ }
+
+@@ -337,7 +337,7 @@ static int hp_wmi_set_block(void *data, bool blocked)
+ ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
+ &query, sizeof(query), 0);
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+ return 0;
+ }
+
+@@ -429,7 +429,7 @@ static int hp_wmi_post_code_state(void)
+ int ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+ return state;
+ }
+
+@@ -495,7 +495,7 @@ static ssize_t set_als(struct device *dev, struct device_attribute *attr,
+ int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
+ sizeof(tmp), sizeof(tmp));
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+
+ return count;
+ }
+@@ -516,7 +516,7 @@ static ssize_t set_postcode(struct device *dev, struct device_attribute *attr,
+ ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 1, &tmp,
+ sizeof(tmp), sizeof(tmp));
+ if (ret)
+- return -EINVAL;
++ return ret < 0 ? ret : -EINVAL;
+
+ return count;
+ }
+@@ -573,10 +573,12 @@ static void hp_wmi_notify(u32 value, void *context)
+
+ switch (event_id) {
+ case HPWMI_DOCK_EVENT:
+- input_report_switch(hp_wmi_input_dev, SW_DOCK,
+- hp_wmi_dock_state());
+- input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+- hp_wmi_tablet_state());
++ if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
++ input_report_switch(hp_wmi_input_dev, SW_DOCK,
++ hp_wmi_dock_state());
++ if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
++ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
++ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+ break;
+ case HPWMI_PARK_HDD:
+@@ -649,6 +651,7 @@ static int __init hp_wmi_input_setup(void)
+ {
+ acpi_status status;
+ int err;
++ int val;
+
+ hp_wmi_input_dev = input_allocate_device();
+ if (!hp_wmi_input_dev)
+@@ -659,17 +662,26 @@ static int __init hp_wmi_input_setup(void)
+ hp_wmi_input_dev->id.bustype = BUS_HOST;
+
+ __set_bit(EV_SW, hp_wmi_input_dev->evbit);
+- __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
+- __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
++
++ /* Dock */
++ val = hp_wmi_dock_state();
++ if (!(val < 0)) {
++ __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
++ input_report_switch(hp_wmi_input_dev, SW_DOCK, val);
++ }
++
++ /* Tablet mode */
++ val = hp_wmi_tablet_state();
++ if (!(val < 0)) {
++ __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
++ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, val);
++ }
+
+ err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ /* Set initial hardware state */
+- input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
+- input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+- hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+
+ if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
+@@ -982,10 +994,12 @@ static int hp_wmi_resume_handler(struct device *device)
+ * changed.
+ */
+ if (hp_wmi_input_dev) {
+- input_report_switch(hp_wmi_input_dev, SW_DOCK,
+- hp_wmi_dock_state());
+- input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+- hp_wmi_tablet_state());
++ if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
++ input_report_switch(hp_wmi_input_dev, SW_DOCK,
++ hp_wmi_dock_state());
++ if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
++ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
++ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+ }
+
+diff --git a/drivers/platform/x86/intel_mid_thermal.c b/drivers/platform/x86/intel_mid_thermal.c
+index 0944e834af8d..aeb3f786d2f0 100644
+--- a/drivers/platform/x86/intel_mid_thermal.c
++++ b/drivers/platform/x86/intel_mid_thermal.c
+@@ -551,6 +551,7 @@ static const struct platform_device_id therm_id_table[] = {
+ { "msic_thermal", 1 },
+ { }
+ };
++MODULE_DEVICE_TABLE(platform, therm_id_table);
+
+ static struct platform_driver mid_thermal_driver = {
+ .driver = {
+diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
+index 028d7f76e94e..5f12645f70b8 100644
+--- a/drivers/s390/block/dasd.c
++++ b/drivers/s390/block/dasd.c
+@@ -1633,8 +1633,11 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
+ /* check for for attention message */
+ if (scsw_dstat(&irb->scsw) & DEV_STAT_ATTENTION) {
+ device = dasd_device_from_cdev_locked(cdev);
+- device->discipline->check_attention(device, irb->esw.esw1.lpum);
+- dasd_put_device(device);
++ if (!IS_ERR(device)) {
++ device->discipline->check_attention(device,
++ irb->esw.esw1.lpum);
++ dasd_put_device(device);
++ }
+ }
+
+ if (!cqr)
+diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
+index d296847a0a7c..77336d85a717 100644
+--- a/drivers/s390/net/qeth_core.h
++++ b/drivers/s390/net/qeth_core.h
+@@ -902,7 +902,6 @@ void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
+ int qeth_core_hardsetup_card(struct qeth_card *);
+ void qeth_print_status_message(struct qeth_card *);
+ int qeth_init_qdio_queues(struct qeth_card *);
+-int qeth_send_startlan(struct qeth_card *);
+ int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
+ int (*reply_cb)
+ (struct qeth_card *, struct qeth_reply *, unsigned long),
+diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
+index 2289a2cf7bd8..a81215d87ce1 100644
+--- a/drivers/s390/net/qeth_core_main.c
++++ b/drivers/s390/net/qeth_core_main.c
+@@ -3003,7 +3003,7 @@ int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
+ }
+ EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
+
+-int qeth_send_startlan(struct qeth_card *card)
++static int qeth_send_startlan(struct qeth_card *card)
+ {
+ int rc;
+ struct qeth_cmd_buffer *iob;
+@@ -3016,7 +3016,6 @@ int qeth_send_startlan(struct qeth_card *card)
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+ return rc;
+ }
+-EXPORT_SYMBOL_GPL(qeth_send_startlan);
+
+ static int qeth_default_setadapterparms_cb(struct qeth_card *card,
+ struct qeth_reply *reply, unsigned long data)
+@@ -5130,6 +5129,20 @@ retriable:
+ goto out;
+ }
+
++ rc = qeth_send_startlan(card);
++ if (rc) {
++ QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
++ if (rc == IPA_RC_LAN_OFFLINE) {
++ dev_warn(&card->gdev->dev,
++ "The LAN is offline\n");
++ card->lan_online = 0;
++ } else {
++ rc = -ENODEV;
++ goto out;
++ }
++ } else
++ card->lan_online = 1;
++
+ card->options.ipa4.supported_funcs = 0;
+ card->options.adp.supported_funcs = 0;
+ card->options.sbp.supported_funcs = 0;
+@@ -5140,14 +5153,14 @@ retriable:
+ if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
+ rc = qeth_query_setadapterparms(card);
+ if (rc < 0) {
+- QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
++ QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
+ goto out;
+ }
+ }
+ if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
+ rc = qeth_query_setdiagass(card);
+ if (rc < 0) {
+- QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
++ QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
+ goto out;
+ }
+ }
+diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
+index 743673b8b046..b0413f5611cf 100644
+--- a/drivers/s390/net/qeth_l2_main.c
++++ b/drivers/s390/net/qeth_l2_main.c
+@@ -1035,21 +1035,6 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
+ /* softsetup */
+ QETH_DBF_TEXT(SETUP, 2, "softsetp");
+
+- rc = qeth_send_startlan(card);
+- if (rc) {
+- QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
+- if (rc == 0xe080) {
+- dev_warn(&card->gdev->dev,
+- "The LAN is offline\n");
+- card->lan_online = 0;
+- goto contin;
+- }
+- rc = -ENODEV;
+- goto out_remove;
+- } else
+- card->lan_online = 1;
+-
+-contin:
+ if ((card->info.type == QETH_CARD_TYPE_OSD) ||
+ (card->info.type == QETH_CARD_TYPE_OSX)) {
+ /* configure isolation level */
+diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
+index 976c81b32f99..fefd3c512386 100644
+--- a/drivers/s390/net/qeth_l3_main.c
++++ b/drivers/s390/net/qeth_l3_main.c
+@@ -3413,21 +3413,6 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
+ /* softsetup */
+ QETH_DBF_TEXT(SETUP, 2, "softsetp");
+
+- rc = qeth_send_startlan(card);
+- if (rc) {
+- QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
+- if (rc == 0xe080) {
+- dev_warn(&card->gdev->dev,
+- "The LAN is offline\n");
+- card->lan_online = 0;
+- goto contin;
+- }
+- rc = -ENODEV;
+- goto out_remove;
+- } else
+- card->lan_online = 1;
+-
+-contin:
+ rc = qeth_l3_setadapter_parms(card);
+ if (rc)
+ QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
+diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
+index d65bd178d131..ba82403f2cdf 100644
+--- a/drivers/scsi/lpfc/lpfc_attr.c
++++ b/drivers/scsi/lpfc/lpfc_attr.c
+@@ -5147,6 +5147,19 @@ lpfc_free_sysfs_attr(struct lpfc_vport *vport)
+ * Dynamic FC Host Attributes Support
+ */
+
++/**
++ * lpfc_get_host_symbolic_name - Copy symbolic name into the scsi host
++ * @shost: kernel scsi host pointer.
++ **/
++static void
++lpfc_get_host_symbolic_name(struct Scsi_Host *shost)
++{
++ struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
++
++ lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
++ sizeof fc_host_symbolic_name(shost));
++}
++
+ /**
+ * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id
+ * @shost: kernel scsi host pointer.
+@@ -5681,6 +5694,8 @@ struct fc_function_template lpfc_transport_functions = {
+ .show_host_supported_fc4s = 1,
+ .show_host_supported_speeds = 1,
+ .show_host_maxframe_size = 1,
++
++ .get_host_symbolic_name = lpfc_get_host_symbolic_name,
+ .show_host_symbolic_name = 1,
+
+ /* dynamic attributes the driver supports */
+@@ -5748,6 +5763,8 @@ struct fc_function_template lpfc_vport_transport_functions = {
+ .show_host_supported_fc4s = 1,
+ .show_host_supported_speeds = 1,
+ .show_host_maxframe_size = 1,
++
++ .get_host_symbolic_name = lpfc_get_host_symbolic_name,
+ .show_host_symbolic_name = 1,
+
+ /* dynamic attributes the driver supports */
+diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
+index edb1a4d648dd..7ca27e5ef079 100644
+--- a/drivers/scsi/lpfc/lpfc_sli.c
++++ b/drivers/scsi/lpfc/lpfc_sli.c
+@@ -118,6 +118,8 @@ lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe)
+ if (q->phba->sli3_options & LPFC_SLI4_PHWQ_ENABLED)
+ bf_set(wqe_wqid, &wqe->generic.wqe_com, q->queue_id);
+ lpfc_sli_pcimem_bcopy(wqe, temp_wqe, q->entry_size);
++ /* ensure WQE bcopy flushed before doorbell write */
++ wmb();
+
+ /* Update the host index before invoking device */
+ host_index = q->host_index;
+@@ -9823,6 +9825,7 @@ lpfc_sli_abort_iotag_issue(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ iabt->ulpCommand = CMD_CLOSE_XRI_CN;
+
+ abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl;
++ abtsiocbp->vport = vport;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
+ "0339 Abort xri x%x, original iotag x%x, "
+diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c
+index a87ee33f4f2a..1ea4702da5bb 100644
+--- a/drivers/scsi/lpfc/lpfc_vport.c
++++ b/drivers/scsi/lpfc/lpfc_vport.c
+@@ -528,6 +528,12 @@ enable_vport(struct fc_vport *fc_vport)
+
+ spin_lock_irq(shost->host_lock);
+ vport->load_flag |= FC_LOADING;
++ if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
++ spin_unlock_irq(shost->host_lock);
++ lpfc_issue_init_vpi(vport);
++ goto out;
++ }
++
+ vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+ spin_unlock_irq(shost->host_lock);
+
+@@ -548,6 +554,8 @@ enable_vport(struct fc_vport *fc_vport)
+ } else {
+ lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+ }
++
++out:
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+ "1827 Vport Enabled.\n");
+ return VPORT_OK;
+diff --git a/drivers/staging/iio/trigger/iio-trig-bfin-timer.c b/drivers/staging/iio/trigger/iio-trig-bfin-timer.c
+index 3c1c8c6c4a6c..bb8ab4e8e846 100644
+--- a/drivers/staging/iio/trigger/iio-trig-bfin-timer.c
++++ b/drivers/staging/iio/trigger/iio-trig-bfin-timer.c
+@@ -258,7 +258,7 @@ out_free_irq:
+ out1:
+ iio_trigger_unregister(st->trig);
+ out:
+- iio_trigger_put(st->trig);
++ iio_trigger_free(st->trig);
+ return ret;
+ }
+
+@@ -271,7 +271,7 @@ static int iio_bfin_tmr_trigger_remove(struct platform_device *pdev)
+ peripheral_free(st->t->pin);
+ free_irq(st->irq, st);
+ iio_trigger_unregister(st->trig);
+- iio_trigger_put(st->trig);
++ iio_trigger_free(st->trig);
+
+ return 0;
+ }
+diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_user.h b/drivers/staging/lustre/lustre/include/lustre/lustre_user.h
+index 89794fdfec9d..3b93270d5146 100644
+--- a/drivers/staging/lustre/lustre/include/lustre/lustre_user.h
++++ b/drivers/staging/lustre/lustre/include/lustre/lustre_user.h
+@@ -1066,23 +1066,21 @@ struct hsm_action_item {
+ * \retval buffer
+ */
+ static inline char *hai_dump_data_field(struct hsm_action_item *hai,
+- char *buffer, int len)
++ char *buffer, size_t len)
+ {
+- int i, sz, data_len;
++ int i, data_len;
+ char *ptr;
+
+ ptr = buffer;
+- sz = len;
+ data_len = hai->hai_len - sizeof(*hai);
+- for (i = 0 ; (i < data_len) && (sz > 0) ; i++) {
+- int cnt;
+-
+- cnt = snprintf(ptr, sz, "%.2X",
+- (unsigned char)hai->hai_data[i]);
+- ptr += cnt;
+- sz -= cnt;
++ for (i = 0; (i < data_len) && (len > 2); i++) {
++ snprintf(ptr, 3, "%02X", (unsigned char)hai->hai_data[i]);
++ ptr += 2;
++ len -= 2;
+ }
++
+ *ptr = '\0';
++
+ return buffer;
+ }
+
+diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
+index 84b111eb48fa..fddf8ee143da 100644
+--- a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
++++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
+@@ -572,6 +572,13 @@ struct ldlm_lock *__ldlm_handle2lock(const struct lustre_handle *handle,
+ if (lock == NULL)
+ return NULL;
+
++ if (lock->l_export && lock->l_export->exp_failed) {
++ CDEBUG(D_INFO, "lock export failed: lock %p, exp %p\n",
++ lock, lock->l_export);
++ LDLM_LOCK_PUT(lock);
++ return NULL;
++ }
++
+ /* It's unlikely but possible that someone marked the lock as
+ * destroyed after we did handle2object on it */
+ if (flags == 0 && ((lock->l_flags & LDLM_FL_DESTROYED) == 0)) {
+diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c
+index c6c824356464..7dc9fd006b12 100644
+--- a/drivers/staging/lustre/lustre/llite/rw26.c
++++ b/drivers/staging/lustre/lustre/llite/rw26.c
+@@ -376,6 +376,10 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter,
+ if (!lli->lli_has_smd)
+ return -EBADF;
+
++ /* Check EOF by ourselves */
++ if (iov_iter_rw(iter) == READ && file_offset >= i_size_read(inode))
++ return 0;
++
+ /* FIXME: io smaller than PAGE_SIZE is broken on ia64 ??? */
+ if ((file_offset & ~CFS_PAGE_MASK) || (count & ~CFS_PAGE_MASK))
+ return -EINVAL;
+diff --git a/drivers/staging/lustre/lustre/ptlrpc/service.c b/drivers/staging/lustre/lustre/ptlrpc/service.c
+index 8e61421515cb..58997fb0c1dd 100644
+--- a/drivers/staging/lustre/lustre/ptlrpc/service.c
++++ b/drivers/staging/lustre/lustre/ptlrpc/service.c
+@@ -1498,20 +1498,15 @@ static int ptlrpc_server_hpreq_init(struct ptlrpc_service_part *svcpt,
+ * it may hit swab race at LU-1044. */
+ if (req->rq_ops->hpreq_check) {
+ rc = req->rq_ops->hpreq_check(req);
+- /**
+- * XXX: Out of all current
+- * ptlrpc_hpreq_ops::hpreq_check(), only
+- * ldlm_cancel_hpreq_check() can return an error code;
+- * other functions assert in similar places, which seems
+- * odd. What also does not seem right is that handlers
+- * for those RPCs do not assert on the same checks, but
+- * rather handle the error cases. e.g. see
+- * ost_rw_hpreq_check(), and ost_brw_read(),
+- * ost_brw_write().
++ if (rc == -ESTALE) {
++ req->rq_status = rc;
++ ptlrpc_error(req);
++ }
++ /** can only return error,
++ * 0 for normal request,
++ * or 1 for high priority request
+ */
+- if (rc < 0)
+- return rc;
+- LASSERT(rc == 0 || rc == 1);
++ LASSERT(rc <= 1);
+ }
+
+ spin_lock_bh(&req->rq_export->exp_rpc_lock);
+diff --git a/drivers/staging/rtl8188eu/include/rtw_debug.h b/drivers/staging/rtl8188eu/include/rtw_debug.h
+index 971bf457f32d..e75a386344e4 100644
+--- a/drivers/staging/rtl8188eu/include/rtw_debug.h
++++ b/drivers/staging/rtl8188eu/include/rtw_debug.h
+@@ -75,7 +75,7 @@ extern u32 GlobalDebugLevel;
+ #define DBG_88E_LEVEL(_level, fmt, arg...) \
+ do { \
+ if (_level <= GlobalDebugLevel) \
+- pr_info(DRIVER_PREFIX"ERROR " fmt, ##arg); \
++ pr_info(DRIVER_PREFIX fmt, ##arg); \
+ } while (0)
+
+ #define DBG_88E(...) \
+diff --git a/drivers/staging/rtl8712/ieee80211.h b/drivers/staging/rtl8712/ieee80211.h
+index 8269be80437a..53c39ca99ee4 100644
+--- a/drivers/staging/rtl8712/ieee80211.h
++++ b/drivers/staging/rtl8712/ieee80211.h
+@@ -142,52 +142,52 @@ struct ieee_ibss_seq {
+ };
+
+ struct ieee80211_hdr {
+- u16 frame_ctl;
+- u16 duration_id;
++ __le16 frame_ctl;
++ __le16 duration_id;
+ u8 addr1[ETH_ALEN];
+ u8 addr2[ETH_ALEN];
+ u8 addr3[ETH_ALEN];
+- u16 seq_ctl;
++ __le16 seq_ctl;
+ u8 addr4[ETH_ALEN];
+-} __packed;
++} __packed __aligned(2);
+
+ struct ieee80211_hdr_3addr {
+- u16 frame_ctl;
+- u16 duration_id;
++ __le16 frame_ctl;
++ __le16 duration_id;
+ u8 addr1[ETH_ALEN];
+ u8 addr2[ETH_ALEN];
+ u8 addr3[ETH_ALEN];
+- u16 seq_ctl;
+-} __packed;
++ __le16 seq_ctl;
++} __packed __aligned(2);
+
+
+ struct ieee80211_hdr_qos {
+- u16 frame_ctl;
+- u16 duration_id;
++ __le16 frame_ctl;
++ __le16 duration_id;
+ u8 addr1[ETH_ALEN];
+ u8 addr2[ETH_ALEN];
+ u8 addr3[ETH_ALEN];
+- u16 seq_ctl;
++ __le16 seq_ctl;
+ u8 addr4[ETH_ALEN];
+- u16 qc;
+-} __packed;
++ __le16 qc;
++} __packed __aligned(2);
+
+ struct ieee80211_hdr_3addr_qos {
+- u16 frame_ctl;
+- u16 duration_id;
++ __le16 frame_ctl;
++ __le16 duration_id;
+ u8 addr1[ETH_ALEN];
+ u8 addr2[ETH_ALEN];
+ u8 addr3[ETH_ALEN];
+- u16 seq_ctl;
+- u16 qc;
++ __le16 seq_ctl;
++ __le16 qc;
+ } __packed;
+
+ struct eapol {
+ u8 snap[6];
+- u16 ethertype;
++ __be16 ethertype;
+ u8 version;
+ u8 type;
+- u16 length;
++ __le16 length;
+ } __packed;
+
+
+@@ -554,13 +554,13 @@ Total: 28-2340 bytes
+ */
+
+ struct ieee80211_header_data {
+- u16 frame_ctl;
+- u16 duration_id;
++ __le16 frame_ctl;
++ __le16 duration_id;
+ u8 addr1[6];
+ u8 addr2[6];
+ u8 addr3[6];
+- u16 seq_ctrl;
+-};
++ __le16 seq_ctrl;
++} __packed __aligned(2);
+
+ #define BEACON_PROBE_SSID_ID_POSITION 12
+
+@@ -592,18 +592,18 @@ struct ieee80211_info_element {
+ /*
+ * These are the data types that can make up management packets
+ *
+- u16 auth_algorithm;
+- u16 auth_sequence;
+- u16 beacon_interval;
+- u16 capability;
++ __le16 auth_algorithm;
++ __le16 auth_sequence;
++ __le16 beacon_interval;
++ __le16 capability;
+ u8 current_ap[ETH_ALEN];
+- u16 listen_interval;
++ __le16 listen_interval;
+ struct {
+ u16 association_id:14, reserved:2;
+ } __packed;
+- u32 time_stamp[2];
+- u16 reason;
+- u16 status;
++ __le32 time_stamp[2];
++ __le16 reason;
++ __le16 status;
+ */
+
+ #define IEEE80211_DEFAULT_TX_ESSID "Penguin"
+@@ -611,16 +611,16 @@ struct ieee80211_info_element {
+
+ struct ieee80211_authentication {
+ struct ieee80211_header_data header;
+- u16 algorithm;
+- u16 transaction;
+- u16 status;
++ __le16 algorithm;
++ __le16 transaction;
++ __le16 status;
+ } __packed;
+
+ struct ieee80211_probe_response {
+ struct ieee80211_header_data header;
+- u32 time_stamp[2];
+- u16 beacon_interval;
+- u16 capability;
++ __le32 time_stamp[2];
++ __le16 beacon_interval;
++ __le16 capability;
+ struct ieee80211_info_element info_element;
+ } __packed;
+
+@@ -630,16 +630,16 @@ struct ieee80211_probe_request {
+
+ struct ieee80211_assoc_request_frame {
+ struct ieee80211_hdr_3addr header;
+- u16 capability;
+- u16 listen_interval;
++ __le16 capability;
++ __le16 listen_interval;
+ struct ieee80211_info_element_hdr info_element;
+ } __packed;
+
+ struct ieee80211_assoc_response_frame {
+ struct ieee80211_hdr_3addr header;
+- u16 capability;
+- u16 status;
+- u16 aid;
++ __le16 capability;
++ __le16 status;
++ __le16 aid;
+ } __packed;
+
+ struct ieee80211_txb {
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 7444640a7453..89d01943ca93 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -1755,7 +1755,7 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ struct iscsi_tm *hdr;
+ int out_of_order_cmdsn = 0, ret;
+ bool sess_ref = false;
+- u8 function;
++ u8 function, tcm_function = TMR_UNKNOWN;
+
+ hdr = (struct iscsi_tm *) buf;
+ hdr->flags &= ~ISCSI_FLAG_CMD_FINAL;
+@@ -1801,10 +1801,6 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ * LIO-Target $FABRIC_MOD
+ */
+ if (function != ISCSI_TM_FUNC_TASK_REASSIGN) {
+-
+- u8 tcm_function;
+- int ret;
+-
+ transport_init_se_cmd(&cmd->se_cmd, &iscsi_ops,
+ conn->sess->se_sess, 0, DMA_NONE,
+ TCM_SIMPLE_TAG, cmd->sense_buffer + 2);
+@@ -1840,15 +1836,14 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ return iscsit_add_reject_cmd(cmd,
+ ISCSI_REASON_BOOKMARK_NO_RESOURCES, buf);
+ }
+-
+- ret = core_tmr_alloc_req(&cmd->se_cmd, cmd->tmr_req,
+- tcm_function, GFP_KERNEL);
+- if (ret < 0)
+- return iscsit_add_reject_cmd(cmd,
++ }
++ ret = core_tmr_alloc_req(&cmd->se_cmd, cmd->tmr_req, tcm_function,
++ GFP_KERNEL);
++ if (ret < 0)
++ return iscsit_add_reject_cmd(cmd,
+ ISCSI_REASON_BOOKMARK_NO_RESOURCES, buf);
+
+- cmd->tmr_req->se_tmr_req = cmd->se_cmd.se_tmr_req;
+- }
++ cmd->tmr_req->se_tmr_req = cmd->se_cmd.se_tmr_req;
+
+ cmd->iscsi_opcode = ISCSI_OP_SCSI_TMFUNC;
+ cmd->i_state = ISTATE_SEND_TASKMGTRSP;
+@@ -3449,7 +3444,7 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd,
+
+ if ((tpg->tpg_attrib.generate_node_acls == 0) &&
+ (tpg->tpg_attrib.demo_mode_discovery == 0) &&
+- (!core_tpg_get_initiator_node_acl(&tpg->tpg_se_tpg,
++ (!target_tpg_has_node_acl(&tpg->tpg_se_tpg,
+ cmd->conn->sess->sess_ops->InitiatorName))) {
+ continue;
+ }
+@@ -3969,6 +3964,8 @@ int iscsi_target_tx_thread(void *arg)
+ {
+ int ret = 0;
+ struct iscsi_conn *conn = arg;
++ bool conn_freed = false;
++
+ /*
+ * Allow ourselves to be interrupted by SIGINT so that a
+ * connection recovery / failure event can be triggered externally.
+@@ -3994,12 +3991,14 @@ get_immediate:
+ goto transport_err;
+
+ ret = iscsit_handle_response_queue(conn);
+- if (ret == 1)
++ if (ret == 1) {
+ goto get_immediate;
+- else if (ret == -ECONNRESET)
++ } else if (ret == -ECONNRESET) {
++ conn_freed = true;
+ goto out;
+- else if (ret < 0)
++ } else if (ret < 0) {
+ goto transport_err;
++ }
+ }
+
+ transport_err:
+@@ -4009,8 +4008,13 @@ transport_err:
+ * responsible for cleaning up the early connection failure.
+ */
+ if (conn->conn_state != TARG_CONN_STATE_IN_LOGIN)
+- iscsit_take_action_for_connection_exit(conn);
++ iscsit_take_action_for_connection_exit(conn, &conn_freed);
+ out:
++ if (!conn_freed) {
++ while (!kthread_should_stop()) {
++ msleep(100);
++ }
++ }
+ return 0;
+ }
+
+@@ -4117,6 +4121,7 @@ int iscsi_target_rx_thread(void *arg)
+ u32 checksum = 0, digest = 0;
+ struct iscsi_conn *conn = arg;
+ struct kvec iov;
++ bool conn_freed = false;
+ /*
+ * Allow ourselves to be interrupted by SIGINT so that a
+ * connection recovery / failure event can be triggered externally.
+@@ -4128,7 +4133,7 @@ int iscsi_target_rx_thread(void *arg)
+ */
+ rc = wait_for_completion_interruptible(&conn->rx_login_comp);
+ if (rc < 0 || iscsi_target_check_conn_state(conn))
+- return 0;
++ goto out;
+
+ if (conn->conn_transport->transport_type == ISCSI_INFINIBAND) {
+ struct completion comp;
+@@ -4213,7 +4218,13 @@ int iscsi_target_rx_thread(void *arg)
+ transport_err:
+ if (!signal_pending(current))
+ atomic_set(&conn->transport_failed, 1);
+- iscsit_take_action_for_connection_exit(conn);
++ iscsit_take_action_for_connection_exit(conn, &conn_freed);
++out:
++ if (!conn_freed) {
++ while (!kthread_should_stop()) {
++ msleep(100);
++ }
++ }
+ return 0;
+ }
+
+diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c
+index 10c81298eb0a..84c1c36867ba 100644
+--- a/drivers/target/iscsi/iscsi_target_erl0.c
++++ b/drivers/target/iscsi/iscsi_target_erl0.c
+@@ -928,8 +928,10 @@ static void iscsit_handle_connection_cleanup(struct iscsi_conn *conn)
+ }
+ }
+
+-void iscsit_take_action_for_connection_exit(struct iscsi_conn *conn)
++void iscsit_take_action_for_connection_exit(struct iscsi_conn *conn, bool *conn_freed)
+ {
++ *conn_freed = false;
++
+ spin_lock_bh(&conn->state_lock);
+ if (atomic_read(&conn->connection_exit)) {
+ spin_unlock_bh(&conn->state_lock);
+@@ -940,6 +942,7 @@ void iscsit_take_action_for_connection_exit(struct iscsi_conn *conn)
+ if (conn->conn_state == TARG_CONN_STATE_IN_LOGOUT) {
+ spin_unlock_bh(&conn->state_lock);
+ iscsit_close_connection(conn);
++ *conn_freed = true;
+ return;
+ }
+
+@@ -953,6 +956,7 @@ void iscsit_take_action_for_connection_exit(struct iscsi_conn *conn)
+ spin_unlock_bh(&conn->state_lock);
+
+ iscsit_handle_connection_cleanup(conn);
++ *conn_freed = true;
+ }
+
+ /*
+diff --git a/drivers/target/iscsi/iscsi_target_erl0.h b/drivers/target/iscsi/iscsi_target_erl0.h
+index 21acc9a06376..42673fb44790 100644
+--- a/drivers/target/iscsi/iscsi_target_erl0.h
++++ b/drivers/target/iscsi/iscsi_target_erl0.h
+@@ -9,7 +9,7 @@ extern int iscsit_stop_time2retain_timer(struct iscsi_session *);
+ extern void iscsit_connection_reinstatement_rcfr(struct iscsi_conn *);
+ extern void iscsit_cause_connection_reinstatement(struct iscsi_conn *, int);
+ extern void iscsit_fall_back_to_erl0(struct iscsi_session *);
+-extern void iscsit_take_action_for_connection_exit(struct iscsi_conn *);
++extern void iscsit_take_action_for_connection_exit(struct iscsi_conn *, bool *);
+ extern int iscsit_recover_from_unknown_opcode(struct iscsi_conn *);
+
+ #endif /*** ISCSI_TARGET_ERL0_H ***/
+diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
+index ee3a4bb9fba7..0e75ea8b2a69 100644
+--- a/drivers/target/iscsi/iscsi_target_login.c
++++ b/drivers/target/iscsi/iscsi_target_login.c
+@@ -1510,5 +1510,9 @@ int iscsi_target_login_thread(void *arg)
+ break;
+ }
+
++ while (!kthread_should_stop()) {
++ msleep(100);
++ }
++
+ return 0;
+ }
+diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c
+index 1f7886bb16bf..65e0a06ed916 100644
+--- a/drivers/target/target_core_fabric_configfs.c
++++ b/drivers/target/target_core_fabric_configfs.c
+@@ -98,6 +98,11 @@ static int target_fabric_mappedlun_link(
+ "_tpg does not exist\n");
+ return -EINVAL;
+ }
++ if (lun->lun_shutdown) {
++ pr_err("Unable to create mappedlun symlink because"
++ " lun->lun_shutdown=true\n");
++ return -EINVAL;
++ }
+ se_tpg = lun->lun_sep->sep_tpg;
+
+ nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
+diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
+index 8bf7a06c25a9..5de51c51c37d 100644
+--- a/drivers/target/target_core_sbc.c
++++ b/drivers/target/target_core_sbc.c
+@@ -768,59 +768,6 @@ sbc_check_dpofua(struct se_device *dev, struct se_cmd *cmd, unsigned char *cdb)
+ return 0;
+ }
+
+-/**
+- * sbc_parse_verify - parse VERIFY, VERIFY_16 and WRITE VERIFY commands
+- * @cmd: (in) structure that describes the SCSI command to be parsed.
+- * @sectors: (out) Number of logical blocks on the storage medium that will be
+- * affected by the SCSI command.
+- * @bufflen: (out) Expected length of the SCSI Data-Out buffer.
+- */
+-static sense_reason_t sbc_parse_verify(struct se_cmd *cmd, int *sectors,
+- u32 *bufflen)
+-{
+- struct se_device *dev = cmd->se_dev;
+- u8 *cdb = cmd->t_task_cdb;
+- u8 bytchk = (cdb[1] >> 1) & 3;
+- sense_reason_t ret;
+-
+- switch (cdb[0]) {
+- case VERIFY:
+- case WRITE_VERIFY:
+- *sectors = transport_get_sectors_10(cdb);
+- cmd->t_task_lba = transport_lba_32(cdb);
+- break;
+- case VERIFY_16:
+- *sectors = transport_get_sectors_16(cdb);
+- cmd->t_task_lba = transport_lba_64(cdb);
+- break;
+- default:
+- WARN_ON_ONCE(true);
+- return TCM_UNSUPPORTED_SCSI_OPCODE;
+- }
+-
+- if (sbc_check_dpofua(dev, cmd, cdb))
+- return TCM_INVALID_CDB_FIELD;
+-
+- ret = sbc_check_prot(dev, cmd, cdb, *sectors, true);
+- if (ret)
+- return ret;
+-
+- switch (bytchk) {
+- case 0:
+- *bufflen = 0;
+- break;
+- case 1:
+- *bufflen = sbc_get_size(cmd, *sectors);
+- cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+- break;
+- default:
+- pr_err("Unsupported BYTCHK value %d for SCSI opcode %#x\n",
+- bytchk, cdb[0]);
+- return TCM_INVALID_CDB_FIELD;
+- }
+- return TCM_NO_SENSE;
+-}
+-
+ sense_reason_t
+ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
+ {
+@@ -891,6 +838,7 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
+ cmd->execute_cmd = sbc_execute_rw;
+ break;
+ case WRITE_10:
++ case WRITE_VERIFY:
+ sectors = transport_get_sectors_10(cdb);
+ cmd->t_task_lba = transport_lba_32(cdb);
+
+@@ -905,12 +853,6 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
+ cmd->execute_rw = ops->execute_rw;
+ cmd->execute_cmd = sbc_execute_rw;
+ break;
+- case WRITE_VERIFY:
+- ret = sbc_parse_verify(cmd, §ors, &size);
+- if (ret)
+- return ret;
+- cmd->execute_cmd = sbc_execute_rw;
+- goto check_lba;
+ case WRITE_12:
+ sectors = transport_get_sectors_12(cdb);
+ cmd->t_task_lba = transport_lba_32(cdb);
+@@ -1110,9 +1052,14 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
+ break;
+ case VERIFY:
+ case VERIFY_16:
+- ret = sbc_parse_verify(cmd, §ors, &size);
+- if (ret)
+- return ret;
++ size = 0;
++ if (cdb[0] == VERIFY) {
++ sectors = transport_get_sectors_10(cdb);
++ cmd->t_task_lba = transport_lba_32(cdb);
++ } else {
++ sectors = transport_get_sectors_16(cdb);
++ cmd->t_task_lba = transport_lba_64(cdb);
++ }
+ cmd->execute_cmd = sbc_emulate_noop;
+ goto check_lba;
+ case REZERO_UNIT:
+diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
+index 47f064415bf6..707717221b49 100644
+--- a/drivers/target/target_core_tpg.c
++++ b/drivers/target/target_core_tpg.c
+@@ -110,9 +110,21 @@ struct se_node_acl *core_tpg_get_initiator_node_acl(
+ unsigned char *initiatorname)
+ {
+ struct se_node_acl *acl;
+-
++ /*
++ * Obtain se_node_acl->acl_kref using fabric driver provided
++ * initiatorname[] during node acl endpoint lookup driven by
++ * new se_session login.
++ *
++ * The reference is held until se_session shutdown -> release
++ * occurs via fabric driver invoked transport_deregister_session()
++ * or transport_free_session() code.
++ */
+ spin_lock_irq(&tpg->acl_node_lock);
+ acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname);
++ if (acl) {
++ if (!kref_get_unless_zero(&acl->acl_kref))
++ acl = NULL;
++ }
+ spin_unlock_irq(&tpg->acl_node_lock);
+
+ return acl;
+@@ -254,6 +266,25 @@ static int core_create_device_list_for_node(struct se_node_acl *nacl)
+ return 0;
+ }
+
++bool target_tpg_has_node_acl(struct se_portal_group *tpg,
++ const char *initiatorname)
++{
++ struct se_node_acl *acl;
++ bool found = false;
++
++ spin_lock_irq(&tpg->acl_node_lock);
++ list_for_each_entry(acl, &tpg->acl_node_list, acl_list) {
++ if (!strcmp(acl->initiatorname, initiatorname)) {
++ found = true;
++ break;
++ }
++ }
++ spin_unlock_irq(&tpg->acl_node_lock);
++
++ return found;
++}
++EXPORT_SYMBOL(target_tpg_has_node_acl);
++
+ /* core_tpg_check_initiator_node_acl()
+ *
+ *
+@@ -274,10 +305,19 @@ struct se_node_acl *core_tpg_check_initiator_node_acl(
+ acl = tpg->se_tpg_tfo->tpg_alloc_fabric_acl(tpg);
+ if (!acl)
+ return NULL;
++ /*
++ * When allocating a dynamically generated node_acl, go ahead
++ * and take the extra kref now before returning to the fabric
++ * driver caller.
++ *
++ * Note this reference will be released at session shutdown
++ * time within transport_free_session() code.
++ */
++ kref_init(&acl->acl_kref);
++ kref_get(&acl->acl_kref);
+
+ INIT_LIST_HEAD(&acl->acl_list);
+ INIT_LIST_HEAD(&acl->acl_sess_list);
+- kref_init(&acl->acl_kref);
+ init_completion(&acl->acl_free_comp);
+ spin_lock_init(&acl->device_list_lock);
+ spin_lock_init(&acl->nacl_sess_lock);
+@@ -460,7 +500,7 @@ int core_tpg_del_initiator_node_acl(
+ if (acl->dynamic_node_acl) {
+ acl->dynamic_node_acl = 0;
+ }
+- list_del(&acl->acl_list);
++ list_del_init(&acl->acl_list);
+ tpg->num_node_acls--;
+ spin_unlock_irq(&tpg->acl_node_lock);
+
+@@ -761,7 +801,7 @@ int core_tpg_deregister(struct se_portal_group *se_tpg)
+ spin_lock_irq(&se_tpg->acl_node_lock);
+ list_for_each_entry_safe(nacl, nacl_tmp, &se_tpg->acl_node_list,
+ acl_list) {
+- list_del(&nacl->acl_list);
++ list_del_init(&nacl->acl_list);
+ se_tpg->num_node_acls--;
+ spin_unlock_irq(&se_tpg->acl_node_lock);
+
+@@ -843,6 +883,8 @@ void core_tpg_remove_lun(
+ struct se_portal_group *tpg,
+ struct se_lun *lun)
+ {
++ lun->lun_shutdown = true;
++
+ core_clear_lun_from_tpg(lun, tpg);
+ transport_clear_lun_ref(lun);
+
+@@ -850,6 +892,7 @@ void core_tpg_remove_lun(
+
+ spin_lock(&tpg->tpg_lun_lock);
+ lun->lun_status = TRANSPORT_LUN_STATUS_FREE;
++ lun->lun_shutdown = false;
+ spin_unlock(&tpg->tpg_lun_lock);
+
+ percpu_ref_exit(&lun->lun_ref);
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index b7d27b816359..958b0dc8ada7 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -359,7 +359,6 @@ void __transport_register_session(
+ &buf[0], PR_REG_ISID_LEN);
+ se_sess->sess_bin_isid = get_unaligned_be64(&buf[0]);
+ }
+- kref_get(&se_nacl->acl_kref);
+
+ spin_lock_irq(&se_nacl->nacl_sess_lock);
+ /*
+@@ -448,14 +447,30 @@ static void target_complete_nacl(struct kref *kref)
+ {
+ struct se_node_acl *nacl = container_of(kref,
+ struct se_node_acl, acl_kref);
++ struct se_portal_group *se_tpg = nacl->se_tpg;
++ const struct target_core_fabric_ops *se_tfo = se_tpg->se_tpg_tfo;
++ unsigned long flags;
++
++ if (!nacl->dynamic_stop) {
++ complete(&nacl->acl_free_comp);
++ return;
++ }
+
+- complete(&nacl->acl_free_comp);
++ spin_lock_irqsave(&se_tpg->acl_node_lock, flags);
++ list_del_init(&nacl->acl_list);
++ se_tpg->num_node_acls--;
++ spin_unlock_irqrestore(&se_tpg->acl_node_lock, flags);
++
++ core_tpg_wait_for_nacl_pr_ref(nacl);
++ core_free_device_list_for_node(nacl, se_tpg);
++ se_tfo->tpg_release_fabric_acl(se_tpg, nacl);
+ }
+
+ void target_put_nacl(struct se_node_acl *nacl)
+ {
+ kref_put(&nacl->acl_kref, target_complete_nacl);
+ }
++EXPORT_SYMBOL(target_put_nacl);
+
+ void transport_deregister_session_configfs(struct se_session *se_sess)
+ {
+@@ -488,6 +503,42 @@ EXPORT_SYMBOL(transport_deregister_session_configfs);
+
+ void transport_free_session(struct se_session *se_sess)
+ {
++ struct se_node_acl *se_nacl = se_sess->se_node_acl;
++
++ /*
++ * Drop the se_node_acl->nacl_kref obtained from within
++ * core_tpg_get_initiator_node_acl().
++ */
++ if (se_nacl) {
++ struct se_portal_group *se_tpg = se_nacl->se_tpg;
++ const struct target_core_fabric_ops *se_tfo = se_tpg->se_tpg_tfo;
++ unsigned long flags;
++
++ se_sess->se_node_acl = NULL;
++
++ /*
++ * Also determine if we need to drop the extra ->cmd_kref if
++ * it had been previously dynamically generated, and
++ * the endpoint is not caching dynamic ACLs.
++ */
++ spin_lock_irqsave(&se_tpg->acl_node_lock, flags);
++ if (se_nacl->dynamic_node_acl &&
++ !se_tfo->tpg_check_demo_mode_cache(se_tpg)) {
++ spin_lock(&se_nacl->nacl_sess_lock);
++ if (list_empty(&se_nacl->acl_sess_list))
++ se_nacl->dynamic_stop = true;
++ spin_unlock(&se_nacl->nacl_sess_lock);
++
++ if (se_nacl->dynamic_stop)
++ list_del_init(&se_nacl->acl_list);
++ }
++ spin_unlock_irqrestore(&se_tpg->acl_node_lock, flags);
++
++ if (se_nacl->dynamic_stop)
++ target_put_nacl(se_nacl);
++
++ target_put_nacl(se_nacl);
++ }
+ if (se_sess->sess_cmd_map) {
+ percpu_ida_destroy(&se_sess->sess_tag_pool);
+ if (is_vmalloc_addr(se_sess->sess_cmd_map))
+@@ -502,16 +553,12 @@ EXPORT_SYMBOL(transport_free_session);
+ void transport_deregister_session(struct se_session *se_sess)
+ {
+ struct se_portal_group *se_tpg = se_sess->se_tpg;
+- const struct target_core_fabric_ops *se_tfo;
+- struct se_node_acl *se_nacl;
+ unsigned long flags;
+- bool comp_nacl = true;
+
+ if (!se_tpg) {
+ transport_free_session(se_sess);
+ return;
+ }
+- se_tfo = se_tpg->se_tpg_tfo;
+
+ spin_lock_irqsave(&se_tpg->session_lock, flags);
+ list_del(&se_sess->sess_list);
+@@ -519,37 +566,16 @@ void transport_deregister_session(struct se_session *se_sess)
+ se_sess->fabric_sess_ptr = NULL;
+ spin_unlock_irqrestore(&se_tpg->session_lock, flags);
+
+- /*
+- * Determine if we need to do extra work for this initiator node's
+- * struct se_node_acl if it had been previously dynamically generated.
+- */
+- se_nacl = se_sess->se_node_acl;
+-
+- spin_lock_irqsave(&se_tpg->acl_node_lock, flags);
+- if (se_nacl && se_nacl->dynamic_node_acl) {
+- if (!se_tfo->tpg_check_demo_mode_cache(se_tpg)) {
+- list_del(&se_nacl->acl_list);
+- se_tpg->num_node_acls--;
+- spin_unlock_irqrestore(&se_tpg->acl_node_lock, flags);
+- core_tpg_wait_for_nacl_pr_ref(se_nacl);
+- core_free_device_list_for_node(se_nacl, se_tpg);
+- se_tfo->tpg_release_fabric_acl(se_tpg, se_nacl);
+-
+- comp_nacl = false;
+- spin_lock_irqsave(&se_tpg->acl_node_lock, flags);
+- }
+- }
+- spin_unlock_irqrestore(&se_tpg->acl_node_lock, flags);
+-
+ pr_debug("TARGET_CORE[%s]: Deregistered fabric_sess\n",
+ se_tpg->se_tpg_tfo->get_fabric_name());
+ /*
+ * If last kref is dropping now for an explicit NodeACL, awake sleeping
+ * ->acl_free_comp caller to wakeup configfs se_node_acl->acl_group
+- * removal context.
++ * removal context from within transport_free_session() code.
++ *
++ * For dynamic ACL, target_put_nacl() uses target_complete_nacl()
++ * to release all remaining generate_node_acl=1 created ACL resources.
+ */
+- if (se_nacl && comp_nacl)
+- target_put_nacl(se_nacl);
+
+ transport_free_session(se_sess);
+ }
+diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
+index 6b07b1040dbb..b8e618ab2273 100644
+--- a/drivers/tty/serial/omap-serial.c
++++ b/drivers/tty/serial/omap-serial.c
+@@ -708,7 +708,7 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl)
+ if ((mctrl & TIOCM_RTS) && (port->status & UPSTAT_AUTORTS))
+ up->efr |= UART_EFR_RTS;
+ else
+- up->efr &= UART_EFR_RTS;
++ up->efr &= ~UART_EFR_RTS;
+ serial_out(up, UART_EFR, up->efr);
+ serial_out(up, UART_LCR, lcr);
+
+diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
+index e7d6566fafaf..19316609d4f9 100644
+--- a/drivers/tty/serial/sh-sci.c
++++ b/drivers/tty/serial/sh-sci.c
+@@ -171,18 +171,17 @@ static struct plat_sci_reg sci_regmap[SCIx_NR_REGTYPES][SCIx_NR_REGS] = {
+ },
+
+ /*
+- * Common definitions for legacy IrDA ports, dependent on
+- * regshift value.
++ * Common definitions for legacy IrDA ports.
+ */
+ [SCIx_IRDA_REGTYPE] = {
+ [SCSMR] = { 0x00, 8 },
+- [SCBRR] = { 0x01, 8 },
+- [SCSCR] = { 0x02, 8 },
+- [SCxTDR] = { 0x03, 8 },
+- [SCxSR] = { 0x04, 8 },
+- [SCxRDR] = { 0x05, 8 },
+- [SCFCR] = { 0x06, 8 },
+- [SCFDR] = { 0x07, 16 },
++ [SCBRR] = { 0x02, 8 },
++ [SCSCR] = { 0x04, 8 },
++ [SCxTDR] = { 0x06, 8 },
++ [SCxSR] = { 0x08, 16 },
++ [SCxRDR] = { 0x0a, 8 },
++ [SCFCR] = { 0x0c, 8 },
++ [SCFDR] = { 0x0e, 16 },
+ [SCTFDR] = sci_reg_invalid,
+ [SCRFDR] = sci_reg_invalid,
+ [SCSPTR] = sci_reg_invalid,
+diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
+index a235e9ab932c..94a15883f8cc 100644
+--- a/drivers/usb/core/devio.c
++++ b/drivers/usb/core/devio.c
+@@ -1649,6 +1649,18 @@ static int proc_unlinkurb(struct usb_dev_state *ps, void __user *arg)
+ return 0;
+ }
+
++static void compute_isochronous_actual_length(struct urb *urb)
++{
++ unsigned int i;
++
++ if (urb->number_of_packets > 0) {
++ urb->actual_length = 0;
++ for (i = 0; i < urb->number_of_packets; i++)
++ urb->actual_length +=
++ urb->iso_frame_desc[i].actual_length;
++ }
++}
++
+ static int processcompl(struct async *as, void __user * __user *arg)
+ {
+ struct urb *urb = as->urb;
+@@ -1656,6 +1668,7 @@ static int processcompl(struct async *as, void __user * __user *arg)
+ void __user *addr = as->userurb;
+ unsigned int i;
+
++ compute_isochronous_actual_length(urb);
+ if (as->userbuffer && urb->actual_length) {
+ if (copy_urb_data_to_user(as->userbuffer, urb))
+ goto err_out;
+@@ -1825,6 +1838,7 @@ static int processcompl_compat(struct async *as, void __user * __user *arg)
+ void __user *addr = as->userurb;
+ unsigned int i;
+
++ compute_isochronous_actual_length(urb);
+ if (as->userbuffer && urb->actual_length) {
+ if (copy_urb_data_to_user(as->userbuffer, urb))
+ return -EFAULT;
+diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
+index 78f357b1a8fd..de0843cdeb9f 100644
+--- a/drivers/usb/core/hcd.c
++++ b/drivers/usb/core/hcd.c
+@@ -2927,6 +2927,7 @@ void usb_remove_hcd(struct usb_hcd *hcd)
+ }
+
+ usb_put_invalidate_rhdev(hcd);
++ hcd->flags = 0;
+ }
+ EXPORT_SYMBOL_GPL(usb_remove_hcd);
+
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index a6aaf2f193a4..37c418e581fb 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -221,6 +221,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* Corsair Strafe RGB */
+ { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT },
+
++ /* Corsair K70 LUX */
++ { USB_DEVICE(0x1b1c, 0x1b36), .driver_info = USB_QUIRK_DELAY_INIT },
++
+ /* MIDI keyboard WORLDE MINI */
+ { USB_DEVICE(0x1c75, 0x0204), .driver_info =
+ USB_QUIRK_CONFIG_INTF_STRINGS },
+diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
+index 58b4c2828ee9..9176837442e9 100644
+--- a/drivers/usb/misc/usbtest.c
++++ b/drivers/usb/misc/usbtest.c
+@@ -183,12 +183,13 @@ found:
+ return tmp;
+ }
+
+- if (in) {
++ if (in)
+ dev->in_pipe = usb_rcvbulkpipe(udev,
+ in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
++ if (out)
+ dev->out_pipe = usb_sndbulkpipe(udev,
+ out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+- }
++
+ if (iso_in) {
+ dev->iso_in = &iso_in->desc;
+ dev->in_iso_pipe = usb_rcvisocpipe(udev,
+diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
+index 37d0e8cc7af6..2220c1b9df10 100644
+--- a/drivers/usb/serial/garmin_gps.c
++++ b/drivers/usb/serial/garmin_gps.c
+@@ -138,6 +138,7 @@ struct garmin_data {
+ __u8 privpkt[4*6];
+ spinlock_t lock;
+ struct list_head pktlist;
++ struct usb_anchor write_urbs;
+ };
+
+
+@@ -906,13 +907,19 @@ static int garmin_init_session(struct usb_serial_port *port)
+ sizeof(GARMIN_START_SESSION_REQ), 0);
+
+ if (status < 0)
+- break;
++ goto err_kill_urbs;
+ }
+
+ if (status > 0)
+ status = 0;
+ }
+
++ return status;
++
++err_kill_urbs:
++ usb_kill_anchored_urbs(&garmin_data_p->write_urbs);
++ usb_kill_urb(port->interrupt_in_urb);
++
+ return status;
+ }
+
+@@ -931,7 +938,6 @@ static int garmin_open(struct tty_struct *tty, struct usb_serial_port *port)
+ spin_unlock_irqrestore(&garmin_data_p->lock, flags);
+
+ /* shutdown any bulk reads that might be going on */
+- usb_kill_urb(port->write_urb);
+ usb_kill_urb(port->read_urb);
+
+ if (garmin_data_p->state == STATE_RESET)
+@@ -954,7 +960,7 @@ static void garmin_close(struct usb_serial_port *port)
+
+ /* shutdown our urbs */
+ usb_kill_urb(port->read_urb);
+- usb_kill_urb(port->write_urb);
++ usb_kill_anchored_urbs(&garmin_data_p->write_urbs);
+
+ /* keep reset state so we know that we must start a new session */
+ if (garmin_data_p->state != STATE_RESET)
+@@ -1038,12 +1044,14 @@ static int garmin_write_bulk(struct usb_serial_port *port,
+ }
+
+ /* send it down the pipe */
++ usb_anchor_urb(urb, &garmin_data_p->write_urbs);
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+ if (status) {
+ dev_err(&port->dev,
+ "%s - usb_submit_urb(write bulk) failed with status = %d\n",
+ __func__, status);
+ count = status;
++ usb_unanchor_urb(urb);
+ kfree(buffer);
+ }
+
+@@ -1402,9 +1410,16 @@ static int garmin_port_probe(struct usb_serial_port *port)
+ garmin_data_p->state = 0;
+ garmin_data_p->flags = 0;
+ garmin_data_p->count = 0;
++ init_usb_anchor(&garmin_data_p->write_urbs);
+ usb_set_serial_port_data(port, garmin_data_p);
+
+ status = garmin_init_session(port);
++ if (status)
++ goto err_free;
++
++ return 0;
++err_free:
++ kfree(garmin_data_p);
+
+ return status;
+ }
+@@ -1414,6 +1429,7 @@ static int garmin_port_remove(struct usb_serial_port *port)
+ {
+ struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
+
++ usb_kill_anchored_urbs(&garmin_data_p->write_urbs);
+ usb_kill_urb(port->interrupt_in_urb);
+ del_timer_sync(&garmin_data_p->timer);
+ kfree(garmin_data_p);
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index 996dc09b00b8..7b3ce6e42fc6 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -147,6 +147,7 @@ static const struct usb_device_id id_table[] = {
+ {DEVICE_SWI(0x114f, 0x68a2)}, /* Sierra Wireless MC7750 */
+ {DEVICE_SWI(0x1199, 0x68a2)}, /* Sierra Wireless MC7710 */
+ {DEVICE_SWI(0x1199, 0x901c)}, /* Sierra Wireless EM7700 */
++ {DEVICE_SWI(0x1199, 0x901e)}, /* Sierra Wireless EM7355 QDL */
+ {DEVICE_SWI(0x1199, 0x901f)}, /* Sierra Wireless EM7355 */
+ {DEVICE_SWI(0x1199, 0x9040)}, /* Sierra Wireless Modem */
+ {DEVICE_SWI(0x1199, 0x9051)}, /* Netgear AirCard 340U */
+diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
+index dd88ba1d71ce..35373e2065b2 100644
+--- a/drivers/video/backlight/adp5520_bl.c
++++ b/drivers/video/backlight/adp5520_bl.c
+@@ -332,10 +332,18 @@ static int adp5520_bl_probe(struct platform_device *pdev)
+ }
+
+ platform_set_drvdata(pdev, bl);
+- ret |= adp5520_bl_setup(bl);
++ ret = adp5520_bl_setup(bl);
++ if (ret) {
++ dev_err(&pdev->dev, "failed to setup\n");
++ if (data->pdata->en_ambl_sens)
++ sysfs_remove_group(&bl->dev.kobj,
++ &adp5520_bl_attr_group);
++ return ret;
++ }
++
+ backlight_update_status(bl);
+
+- return ret;
++ return 0;
+ }
+
+ static int adp5520_bl_remove(struct platform_device *pdev)
+diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
+index 7de847df224f..4b40c6a4d441 100644
+--- a/drivers/video/backlight/lcd.c
++++ b/drivers/video/backlight/lcd.c
+@@ -226,6 +226,8 @@ struct lcd_device *lcd_device_register(const char *name, struct device *parent,
+ dev_set_name(&new_ld->dev, "%s", name);
+ dev_set_drvdata(&new_ld->dev, devdata);
+
++ new_ld->ops = ops;
++
+ rc = device_register(&new_ld->dev);
+ if (rc) {
+ put_device(&new_ld->dev);
+@@ -238,8 +240,6 @@ struct lcd_device *lcd_device_register(const char *name, struct device *parent,
+ return ERR_PTR(rc);
+ }
+
+- new_ld->ops = ops;
+-
+ return new_ld;
+ }
+ EXPORT_SYMBOL(lcd_device_register);
+diff --git a/drivers/video/fbdev/pmag-ba-fb.c b/drivers/video/fbdev/pmag-ba-fb.c
+index 914a52ba8477..77837665ce89 100644
+--- a/drivers/video/fbdev/pmag-ba-fb.c
++++ b/drivers/video/fbdev/pmag-ba-fb.c
+@@ -129,7 +129,7 @@ static struct fb_ops pmagbafb_ops = {
+ /*
+ * Turn the hardware cursor off.
+ */
+-static void __init pmagbafb_erase_cursor(struct fb_info *info)
++static void pmagbafb_erase_cursor(struct fb_info *info)
+ {
+ struct pmagbafb_par *par = info->par;
+
+diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
+index 9e6a85104a20..adc4444ff458 100644
+--- a/drivers/xen/manage.c
++++ b/drivers/xen/manage.c
+@@ -275,8 +275,16 @@ static void sysrq_handler(struct xenbus_watch *watch, const char **vec,
+ err = xenbus_transaction_start(&xbt);
+ if (err)
+ return;
+- if (!xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key)) {
+- pr_err("Unable to read sysrq code in control/sysrq\n");
++ err = xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key);
++ if (err < 0) {
++ /*
++ * The Xenstore watch fires directly after registering it and
++ * after a suspend/resume cycle. So ENOENT is no error but
++ * might happen in those cases.
++ */
++ if (err != -ENOENT)
++ pr_err("Error %d reading sysrq code in control/sysrq\n",
++ err);
+ xenbus_transaction_end(xbt, 1);
+ return;
+ }
+diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
+index 3a0e6a031174..004d0e663d9d 100644
+--- a/drivers/xen/swiotlb-xen.c
++++ b/drivers/xen/swiotlb-xen.c
+@@ -687,3 +687,22 @@ xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask)
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(xen_swiotlb_set_dma_mask);
++
++/*
++ * Create userspace mapping for the DMA-coherent memory.
++ * This function should be called with the pages from the current domain only,
++ * passing pages mapped from other domains would lead to memory corruption.
++ */
++int
++xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
++ void *cpu_addr, dma_addr_t dma_addr, size_t size,
++ unsigned long attrs)
++{
++#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
++ if (__generic_dma_ops(dev)->mmap)
++ return __generic_dma_ops(dev)->mmap(dev, vma, cpu_addr,
++ dma_addr, size, attrs);
++#endif
++ return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
++}
++EXPORT_SYMBOL_GPL(xen_swiotlb_dma_mmap);
+diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
+index 297e05c9e2b0..49a0d6b027c1 100644
+--- a/fs/cifs/dir.c
++++ b/fs/cifs/dir.c
+@@ -193,7 +193,8 @@ check_name(struct dentry *direntry, struct cifs_tcon *tcon)
+ struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
+ int i;
+
+- if (unlikely(direntry->d_name.len >
++ if (unlikely(tcon->fsAttrInfo.MaxPathNameComponentLength &&
++ direntry->d_name.len >
+ le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength)))
+ return -ENAMETOOLONG;
+
+@@ -509,7 +510,7 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
+
+ rc = check_name(direntry, tcon);
+ if (rc)
+- goto out_free_xid;
++ goto out;
+
+ server = tcon->ses->server;
+
+diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
+index 9b1ffaa0572e..e362c5dad208 100644
+--- a/fs/coda/upcall.c
++++ b/fs/coda/upcall.c
+@@ -446,8 +446,7 @@ int venus_fsync(struct super_block *sb, struct CodaFid *fid)
+ UPARG(CODA_FSYNC);
+
+ inp->coda_fsync.VFid = *fid;
+- error = coda_upcall(coda_vcp(sb), sizeof(union inputArgs),
+- &outsize, inp);
++ error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
+
+ CODA_FREE(inp, insize);
+ return error;
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index 1cc4bfa49823..443ff49dc36f 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -652,6 +652,20 @@ has_zeroout:
+ ret = check_block_validity(inode, map);
+ if (ret != 0)
+ return ret;
++
++ /*
++ * Inodes with freshly allocated blocks where contents will be
++ * visible after transaction commit must be on transaction's
++ * ordered data list.
++ */
++ if (map->m_flags & EXT4_MAP_NEW &&
++ !(map->m_flags & EXT4_MAP_UNWRITTEN) &&
++ !IS_NOQUOTA(inode) &&
++ ext4_should_order_data(inode)) {
++ ret = ext4_jbd2_file_inode(handle, inode);
++ if (ret)
++ return ret;
++ }
+ }
+ return retval;
+ }
+@@ -1146,15 +1160,6 @@ static int ext4_write_end(struct file *file,
+ int i_size_changed = 0;
+
+ trace_ext4_write_end(inode, pos, len, copied);
+- if (ext4_test_inode_state(inode, EXT4_STATE_ORDERED_MODE)) {
+- ret = ext4_jbd2_file_inode(handle, inode);
+- if (ret) {
+- unlock_page(page);
+- page_cache_release(page);
+- goto errout;
+- }
+- }
+-
+ if (ext4_has_inline_data(inode)) {
+ ret = ext4_write_inline_data_end(inode, pos, len,
+ copied, page);
+diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
+index 2524057fd880..07ba42156a6a 100644
+--- a/fs/ext4/mballoc.c
++++ b/fs/ext4/mballoc.c
+@@ -2113,8 +2113,10 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
+ * We search using buddy data only if the order of the request
+ * is greater than equal to the sbi_s_mb_order2_reqs
+ * You can tune it via /sys/fs/ext4/<partition>/mb_order2_req
++ * We also support searching for power-of-two requests only for
++ * requests upto maximum buddy size we have constructed.
+ */
+- if (i >= sbi->s_mb_order2_reqs) {
++ if (i >= sbi->s_mb_order2_reqs && i <= sb->s_blocksize_bits + 2) {
+ /*
+ * This should tell if fe_len is exactly power of 2
+ */
+@@ -2176,7 +2178,7 @@ repeat:
+ }
+
+ ac->ac_groups_scanned++;
+- if (cr == 0 && ac->ac_2order < sb->s_blocksize_bits+2)
++ if (cr == 0)
+ ext4_mb_simple_scan_group(ac, &e4b);
+ else if (cr == 1 && sbi->s_stripe &&
+ !(ac->ac_g_ex.fe_len % sbi->s_stripe))
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index ccc43e2f07e2..807b1df8e134 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -2469,9 +2469,9 @@ static unsigned long ext4_get_stripe_size(struct ext4_sb_info *sbi)
+
+ if (sbi->s_stripe && sbi->s_stripe <= sbi->s_blocks_per_group)
+ ret = sbi->s_stripe;
+- else if (stripe_width <= sbi->s_blocks_per_group)
++ else if (stripe_width && stripe_width <= sbi->s_blocks_per_group)
+ ret = stripe_width;
+- else if (stride <= sbi->s_blocks_per_group)
++ else if (stride && stride <= sbi->s_blocks_per_group)
+ ret = stride;
+ else
+ ret = 0;
+diff --git a/fs/fscache/object-list.c b/fs/fscache/object-list.c
+index 51dde817e1f2..11cf71ac1cb5 100644
+--- a/fs/fscache/object-list.c
++++ b/fs/fscache/object-list.c
+@@ -330,6 +330,13 @@ static void fscache_objlist_config(struct fscache_objlist_data *data)
+ rcu_read_lock();
+
+ confkey = key->payload.data;
++ if (!confkey) {
++ /* key was revoked */
++ rcu_read_unlock();
++ key_put(key);
++ goto no_config;
++ }
++
+ buf = confkey->data;
+
+ for (len = confkey->datalen - 1; len >= 0; len--) {
+diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
+index 2d7f76e52c37..28d273eb5102 100644
+--- a/fs/ocfs2/alloc.c
++++ b/fs/ocfs2/alloc.c
+@@ -7245,13 +7245,24 @@ out:
+
+ static int ocfs2_trim_extent(struct super_block *sb,
+ struct ocfs2_group_desc *gd,
+- u32 start, u32 count)
++ u64 group, u32 start, u32 count)
+ {
+ u64 discard, bcount;
++ struct ocfs2_super *osb = OCFS2_SB(sb);
+
+ bcount = ocfs2_clusters_to_blocks(sb, count);
+- discard = le64_to_cpu(gd->bg_blkno) +
+- ocfs2_clusters_to_blocks(sb, start);
++ discard = ocfs2_clusters_to_blocks(sb, start);
++
++ /*
++ * For the first cluster group, the gd->bg_blkno is not at the start
++ * of the group, but at an offset from the start. If we add it while
++ * calculating discard for first group, we will wrongly start fstrim a
++ * few blocks after the desried start block and the range can cross
++ * over into the next cluster group. So, add it only if this is not
++ * the first cluster group.
++ */
++ if (group != osb->first_cluster_group_blkno)
++ discard += le64_to_cpu(gd->bg_blkno);
+
+ trace_ocfs2_trim_extent(sb, (unsigned long long)discard, bcount);
+
+@@ -7259,7 +7270,7 @@ static int ocfs2_trim_extent(struct super_block *sb,
+ }
+
+ static int ocfs2_trim_group(struct super_block *sb,
+- struct ocfs2_group_desc *gd,
++ struct ocfs2_group_desc *gd, u64 group,
+ u32 start, u32 max, u32 minbits)
+ {
+ int ret = 0, count = 0, next;
+@@ -7278,7 +7289,7 @@ static int ocfs2_trim_group(struct super_block *sb,
+ next = ocfs2_find_next_bit(bitmap, max, start);
+
+ if ((next - start) >= minbits) {
+- ret = ocfs2_trim_extent(sb, gd,
++ ret = ocfs2_trim_extent(sb, gd, group,
+ start, next - start);
+ if (ret < 0) {
+ mlog_errno(ret);
+@@ -7376,7 +7387,8 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range)
+ }
+
+ gd = (struct ocfs2_group_desc *)gd_bh->b_data;
+- cnt = ocfs2_trim_group(sb, gd, first_bit, last_bit, minlen);
++ cnt = ocfs2_trim_group(sb, gd, group,
++ first_bit, last_bit, minlen);
+ brelse(gd_bh);
+ gd_bh = NULL;
+ if (cnt < 0) {
+diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
+index bc06b982e9ea..024128c7f3f2 100644
+--- a/fs/ocfs2/file.c
++++ b/fs/ocfs2/file.c
+@@ -1158,6 +1158,13 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
+ dquot_initialize(inode);
+ size_change = S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_SIZE;
+ if (size_change) {
++ /*
++ * Here we should wait dio to finish before inode lock
++ * to avoid a deadlock between ocfs2_setattr() and
++ * ocfs2_dio_end_io_write()
++ */
++ inode_dio_wait(inode);
++
+ status = ocfs2_rw_lock(inode, 1);
+ if (status < 0) {
+ mlog_errno(status);
+@@ -1177,8 +1184,6 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
+ if (status)
+ goto bail_unlock;
+
+- inode_dio_wait(inode);
+-
+ if (i_size_read(inode) >= attr->ia_size) {
+ if (ocfs2_should_order_data(inode)) {
+ status = ocfs2_begin_ordered_truncate(inode,
+diff --git a/include/dt-bindings/pinctrl/omap.h b/include/dt-bindings/pinctrl/omap.h
+index 13949259705a..0d4fe32b3ae2 100644
+--- a/include/dt-bindings/pinctrl/omap.h
++++ b/include/dt-bindings/pinctrl/omap.h
+@@ -45,8 +45,8 @@
+ #define PIN_OFF_NONE 0
+ #define PIN_OFF_OUTPUT_HIGH (OFF_EN | OFFOUT_EN | OFFOUT_VAL)
+ #define PIN_OFF_OUTPUT_LOW (OFF_EN | OFFOUT_EN)
+-#define PIN_OFF_INPUT_PULLUP (OFF_EN | OFF_PULL_EN | OFF_PULL_UP)
+-#define PIN_OFF_INPUT_PULLDOWN (OFF_EN | OFF_PULL_EN)
++#define PIN_OFF_INPUT_PULLUP (OFF_EN | OFFOUT_EN | OFF_PULL_EN | OFF_PULL_UP)
++#define PIN_OFF_INPUT_PULLDOWN (OFF_EN | OFFOUT_EN | OFF_PULL_EN)
+ #define PIN_OFF_WAKEUPENABLE WAKEUP_EN
+
+ /*
+diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
+index c11f9d1963c3..0fe33734ef41 100644
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -3380,6 +3380,9 @@ struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name,
+ unsigned char name_assign_type,
+ void (*setup)(struct net_device *),
+ unsigned int txqs, unsigned int rxqs);
++int dev_get_valid_name(struct net *net, struct net_device *dev,
++ const char *name);
++
+ #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \
+ alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1)
+
+diff --git a/include/linux/phy.h b/include/linux/phy.h
+index d164045e296c..af193347dc4e 100644
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -135,11 +135,7 @@ static inline const char *phy_modes(phy_interface_t interface)
+ /* Used when trying to connect to a specific phy (mii bus id:phy device id) */
+ #define PHY_ID_FMT "%s:%02x"
+
+-/*
+- * Need to be a little smaller than phydev->dev.bus_id to leave room
+- * for the ":%02x"
+- */
+-#define MII_BUS_ID_SIZE (20 - 3)
++#define MII_BUS_ID_SIZE 61
+
+ /* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit
+ IEEE 802.3ae clause 45 addressing mode used by 10GIGE phy chips. */
+@@ -587,7 +583,7 @@ struct phy_driver {
+ /* A Structure for boards to register fixups with the PHY Lib */
+ struct phy_fixup {
+ struct list_head list;
+- char bus_id[20];
++ char bus_id[MII_BUS_ID_SIZE + 3];
+ u32 phy_uid;
+ u32 phy_uid_mask;
+ int (*run)(struct phy_device *phydev);
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index ca2e26a486ee..495ad8fbe240 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -3230,6 +3230,13 @@ static inline void nf_reset_trace(struct sk_buff *skb)
+ #endif
+ }
+
++static inline void ipvs_reset(struct sk_buff *skb)
++{
++#if IS_ENABLED(CONFIG_IP_VS)
++ skb->ipvs_property = 0;
++#endif
++}
++
+ /* Note: This doesn't put any conntrack and bridge info in dst. */
+ static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src,
+ bool copy)
+diff --git a/include/net/tcp.h b/include/net/tcp.h
+index 3d3a365233f0..966d229d4482 100644
+--- a/include/net/tcp.h
++++ b/include/net/tcp.h
+@@ -1535,12 +1535,12 @@ static inline void tcp_highest_sack_reset(struct sock *sk)
+ tcp_sk(sk)->highest_sack = tcp_write_queue_head(sk);
+ }
+
+-/* Called when old skb is about to be deleted (to be combined with new skb) */
+-static inline void tcp_highest_sack_combine(struct sock *sk,
++/* Called when old skb is about to be deleted and replaced by new skb */
++static inline void tcp_highest_sack_replace(struct sock *sk,
+ struct sk_buff *old,
+ struct sk_buff *new)
+ {
+- if (tcp_sk(sk)->sacked_out && (old == tcp_sk(sk)->highest_sack))
++ if (old == tcp_highest_sack(sk))
+ tcp_sk(sk)->highest_sack = new;
+ }
+
+diff --git a/include/sound/seq_kernel.h b/include/sound/seq_kernel.h
+index feb58d455560..4b9ee3009aa0 100644
+--- a/include/sound/seq_kernel.h
++++ b/include/sound/seq_kernel.h
+@@ -49,7 +49,8 @@ typedef union snd_seq_timestamp snd_seq_timestamp_t;
+ #define SNDRV_SEQ_DEFAULT_CLIENT_EVENTS 200
+
+ /* max delivery path length */
+-#define SNDRV_SEQ_MAX_HOPS 10
++/* NOTE: this shouldn't be greater than MAX_LOCKDEP_SUBCLASSES */
++#define SNDRV_SEQ_MAX_HOPS 8
+
+ /* max size of event size */
+ #define SNDRV_SEQ_MAX_EVENT_LEN 0x3fffffff
+diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
+index 2b40a1fab293..ad3c146bda32 100644
+--- a/include/target/target_core_base.h
++++ b/include/target/target_core_base.h
+@@ -228,6 +228,7 @@ enum tcm_tmreq_table {
+ TMR_LUN_RESET = 5,
+ TMR_TARGET_WARM_RESET = 6,
+ TMR_TARGET_COLD_RESET = 7,
++ TMR_UNKNOWN = 0xff,
+ };
+
+ /* fabric independent task management response values */
+@@ -590,6 +591,7 @@ struct se_node_acl {
+ /* Used to signal demo mode created ACL, disabled by default */
+ bool dynamic_node_acl;
+ bool acl_stop:1;
++ bool dynamic_stop;
+ u32 queue_depth;
+ u32 acl_index;
+ enum target_prot_type saved_prot_type;
+@@ -723,6 +725,7 @@ struct se_lun {
+ u32 lun_access;
+ u32 lun_flags;
+ u32 unpacked_lun;
++ bool lun_shutdown;
+ atomic_t lun_acl_count;
+ spinlock_t lun_acl_lock;
+ spinlock_t lun_sep_lock;
+diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
+index 24c8d9d0d946..419a8c8d2f3e 100644
+--- a/include/target/target_core_fabric.h
++++ b/include/target/target_core_fabric.h
+@@ -171,6 +171,8 @@ int transport_lookup_tmr_lun(struct se_cmd *, u32);
+
+ struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
+ unsigned char *);
++bool target_tpg_has_node_acl(struct se_portal_group *tpg,
++ const char *);
+ struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *,
+ unsigned char *);
+ void core_tpg_clear_object_luns(struct se_portal_group *);
+diff --git a/include/xen/swiotlb-xen.h b/include/xen/swiotlb-xen.h
+index 8b2eb93ae8ba..fab4fb9c6442 100644
+--- a/include/xen/swiotlb-xen.h
++++ b/include/xen/swiotlb-xen.h
+@@ -58,4 +58,9 @@ xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);
+
+ extern int
+ xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask);
++
++extern int
++xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
++ void *cpu_addr, dma_addr_t dma_addr, size_t size,
++ unsigned long attrs);
+ #endif /* __LINUX_SWIOTLB_XEN_H */
+diff --git a/lib/asn1_decoder.c b/lib/asn1_decoder.c
+index 1a000bb050f9..3bb040e347ec 100644
+--- a/lib/asn1_decoder.c
++++ b/lib/asn1_decoder.c
+@@ -219,7 +219,7 @@ next_op:
+ hdr = 2;
+
+ /* Extract a tag from the data */
+- if (unlikely(dp >= datalen - 1))
++ if (unlikely(datalen - dp < 2))
+ goto data_overrun_error;
+ tag = data[dp++];
+ if (unlikely((tag & 0x1f) == ASN1_LONG_TAG))
+@@ -265,7 +265,7 @@ next_op:
+ int n = len - 0x80;
+ if (unlikely(n > 2))
+ goto length_too_long;
+- if (unlikely(dp >= datalen - n))
++ if (unlikely(n > datalen - dp))
+ goto data_overrun_error;
+ hdr += n;
+ for (len = 0; n > 0; n--) {
+@@ -275,6 +275,9 @@ next_op:
+ if (unlikely(len > datalen - dp))
+ goto data_overrun_error;
+ }
++ } else {
++ if (unlikely(len > datalen - dp))
++ goto data_overrun_error;
+ }
+
+ if (flags & FLAG_CONS) {
+diff --git a/lib/test_firmware.c b/lib/test_firmware.c
+index 86374c1c49a4..841191061816 100644
+--- a/lib/test_firmware.c
++++ b/lib/test_firmware.c
+@@ -65,14 +65,19 @@ static ssize_t trigger_request_store(struct device *dev,
+ release_firmware(test_firmware);
+ test_firmware = NULL;
+ rc = request_firmware(&test_firmware, name, dev);
+- if (rc)
++ if (rc) {
+ pr_info("load of '%s' failed: %d\n", name, rc);
+- pr_info("loaded: %zu\n", test_firmware ? test_firmware->size : 0);
++ goto out;
++ }
++ pr_info("loaded: %zu\n", test_firmware->size);
++ rc = count;
++
++out:
+ mutex_unlock(&test_fw_mutex);
+
+ kfree(name);
+
+- return count;
++ return rc;
+ }
+ static DEVICE_ATTR_WO(trigger_request);
+
+diff --git a/mm/page_ext.c b/mm/page_ext.c
+index d86fd2f5353f..0380a9d2507d 100644
+--- a/mm/page_ext.c
++++ b/mm/page_ext.c
+@@ -102,7 +102,6 @@ struct page_ext *lookup_page_ext(struct page *page)
+ struct page_ext *base;
+
+ base = NODE_DATA(page_to_nid(page))->node_page_ext;
+-#ifdef CONFIG_DEBUG_VM
+ /*
+ * The sanity checks the page allocator does upon freeing a
+ * page can reach here before the page_ext arrays are
+@@ -111,7 +110,6 @@ struct page_ext *lookup_page_ext(struct page *page)
+ */
+ if (unlikely(!base))
+ return NULL;
+-#endif
+ offset = pfn - round_down(node_start_pfn(page_to_nid(page)),
+ MAX_ORDER_NR_PAGES);
+ return base + offset;
+@@ -176,7 +174,6 @@ struct page_ext *lookup_page_ext(struct page *page)
+ {
+ unsigned long pfn = page_to_pfn(page);
+ struct mem_section *section = __pfn_to_section(pfn);
+-#ifdef CONFIG_DEBUG_VM
+ /*
+ * The sanity checks the page allocator does upon freeing a
+ * page can reach here before the page_ext arrays are
+@@ -185,7 +182,6 @@ struct page_ext *lookup_page_ext(struct page *page)
+ */
+ if (!section->page_ext)
+ return NULL;
+-#endif
+ return section->page_ext + pfn;
+ }
+
+diff --git a/mm/pagewalk.c b/mm/pagewalk.c
+index 29f2f8b853ae..c2cbd2620169 100644
+--- a/mm/pagewalk.c
++++ b/mm/pagewalk.c
+@@ -142,8 +142,12 @@ static int walk_hugetlb_range(unsigned long addr, unsigned long end,
+ do {
+ next = hugetlb_entry_end(h, addr, end);
+ pte = huge_pte_offset(walk->mm, addr & hmask);
+- if (pte && walk->hugetlb_entry)
++
++ if (pte)
+ err = walk->hugetlb_entry(pte, hmask, addr, next, walk);
++ else if (walk->pte_hole)
++ err = walk->pte_hole(addr, next, walk);
++
+ if (err)
+ break;
+ } while (addr = next, addr != end);
+diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
+index dfecba30d83a..ce53c8691604 100644
+--- a/net/8021q/vlan.c
++++ b/net/8021q/vlan.c
+@@ -376,6 +376,9 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
+ dev->name);
+ vlan_vid_add(dev, htons(ETH_P_8021Q), 0);
+ }
++ if (event == NETDEV_DOWN &&
++ (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
++ vlan_vid_del(dev, htons(ETH_P_8021Q), 0);
+
+ vlan_info = rtnl_dereference(dev->vlan_info);
+ if (!vlan_info)
+@@ -423,9 +426,6 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
+ struct net_device *tmp;
+ LIST_HEAD(close_list);
+
+- if (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
+- vlan_vid_del(dev, htons(ETH_P_8021Q), 0);
+-
+ /* Put all VLANs for this dev in the down state too. */
+ vlan_group_for_each_dev(grp, i, vlandev) {
+ flgs = vlandev->flags;
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 5d94dadb8df9..33674208d325 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -1079,9 +1079,8 @@ static int dev_alloc_name_ns(struct net *net,
+ return ret;
+ }
+
+-static int dev_get_valid_name(struct net *net,
+- struct net_device *dev,
+- const char *name)
++int dev_get_valid_name(struct net *net, struct net_device *dev,
++ const char *name)
+ {
+ BUG_ON(!net);
+
+@@ -1097,6 +1096,7 @@ static int dev_get_valid_name(struct net *net,
+
+ return 0;
+ }
++EXPORT_SYMBOL(dev_get_valid_name);
+
+ /**
+ * dev_change_name - change name of a device
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index c9793c6c5005..2894bb5b7e0a 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -4159,6 +4159,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
+ if (!xnet)
+ return;
+
++ ipvs_reset(skb);
+ skb_orphan(skb);
+ skb->mark = 0;
+ }
+diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
+index ff7736f7ff42..fc0c09e770e6 100644
+--- a/net/dsa/Kconfig
++++ b/net/dsa/Kconfig
+@@ -1,12 +1,13 @@
+ config HAVE_NET_DSA
+ def_bool y
+- depends on NETDEVICES && !S390
++ depends on INET && NETDEVICES && !S390
+
+ # Drivers must select NET_DSA and the appropriate tagging format
+
+ config NET_DSA
+ tristate "Distributed Switch Architecture"
+- depends on HAVE_NET_DSA && NET_SWITCHDEV
++ depends on HAVE_NET_DSA
++ select NET_SWITCHDEV
+ select PHYLIB
+ ---help---
+ Say Y if you want to enable support for the hardware switches supported
+diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
+index ac9a32ec3ee4..0157f09c0de9 100644
+--- a/net/ipv4/ah4.c
++++ b/net/ipv4/ah4.c
+@@ -270,6 +270,9 @@ static void ah_input_done(struct crypto_async_request *base, int err)
+ int ihl = ip_hdrlen(skb);
+ int ah_hlen = (ah->hdrlen + 2) << 2;
+
++ if (err)
++ goto out;
++
+ work_iph = AH_SKB_CB(skb)->tmp;
+ auth_data = ah_tmp_auth(work_iph, ihl);
+ icv = ah_tmp_icv(ahp->ahash, auth_data, ahp->icv_trunc_len);
+diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
+index ff96396ebec5..80d70716dbc1 100644
+--- a/net/ipv4/ipip.c
++++ b/net/ipv4/ipip.c
+@@ -129,42 +129,68 @@ static struct rtnl_link_ops ipip_link_ops __read_mostly;
+ static int ipip_err(struct sk_buff *skb, u32 info)
+ {
+
+-/* All the routers (except for Linux) return only
+- 8 bytes of packet payload. It means, that precise relaying of
+- ICMP in the real Internet is absolutely infeasible.
+- */
++ /* All the routers (except for Linux) return only
++ 8 bytes of packet payload. It means, that precise relaying of
++ ICMP in the real Internet is absolutely infeasible.
++ */
+ struct net *net = dev_net(skb->dev);
+ struct ip_tunnel_net *itn = net_generic(net, ipip_net_id);
+ const struct iphdr *iph = (const struct iphdr *)skb->data;
+- struct ip_tunnel *t;
+- int err;
+ const int type = icmp_hdr(skb)->type;
+ const int code = icmp_hdr(skb)->code;
++ struct ip_tunnel *t;
++ int err = 0;
++
++ switch (type) {
++ case ICMP_DEST_UNREACH:
++ switch (code) {
++ case ICMP_SR_FAILED:
++ /* Impossible event. */
++ goto out;
++ default:
++ /* All others are translated to HOST_UNREACH.
++ * rfc2003 contains "deep thoughts" about NET_UNREACH,
++ * I believe they are just ether pollution. --ANK
++ */
++ break;
++ }
++ break;
++
++ case ICMP_TIME_EXCEEDED:
++ if (code != ICMP_EXC_TTL)
++ goto out;
++ break;
++
++ case ICMP_REDIRECT:
++ break;
++
++ default:
++ goto out;
++ }
+
+- err = -ENOENT;
+ t = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY,
+ iph->daddr, iph->saddr, 0);
+- if (!t)
++ if (!t) {
++ err = -ENOENT;
+ goto out;
++ }
+
+ if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) {
+- ipv4_update_pmtu(skb, dev_net(skb->dev), info,
+- t->parms.link, 0, IPPROTO_IPIP, 0);
+- err = 0;
++ ipv4_update_pmtu(skb, net, info, t->parms.link, 0,
++ iph->protocol, 0);
+ goto out;
+ }
+
+ if (type == ICMP_REDIRECT) {
+- ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0,
+- IPPROTO_IPIP, 0);
+- err = 0;
++ ipv4_redirect(skb, net, t->parms.link, 0, iph->protocol, 0);
+ goto out;
+ }
+
+- if (t->parms.iph.daddr == 0)
++ if (t->parms.iph.daddr == 0) {
++ err = -ENOENT;
+ goto out;
++ }
+
+- err = 0;
+ if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)
+ goto out;
+
+diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
+index f23590a85ce4..4e48774ea851 100644
+--- a/net/ipv4/tcp_output.c
++++ b/net/ipv4/tcp_output.c
+@@ -1962,6 +1962,7 @@ static int tcp_mtu_probe(struct sock *sk)
+ nskb->ip_summed = skb->ip_summed;
+
+ tcp_insert_write_queue_before(nskb, skb, sk);
++ tcp_highest_sack_replace(sk, skb, nskb);
+
+ len = 0;
+ tcp_for_write_queue_from_safe(skb, next, sk) {
+@@ -2465,7 +2466,7 @@ static void tcp_collapse_retrans(struct sock *sk, struct sk_buff *skb)
+
+ BUG_ON(tcp_skb_pcount(skb) != 1 || tcp_skb_pcount(next_skb) != 1);
+
+- tcp_highest_sack_combine(sk, next_skb, skb);
++ tcp_highest_sack_replace(sk, next_skb, skb);
+
+ tcp_unlink_write_queue(next_skb, sk);
+
+@@ -3004,13 +3005,8 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
+ tcp_ecn_make_synack(req, th, sk);
+ th->source = htons(ireq->ir_num);
+ th->dest = ireq->ir_rmt_port;
+- /* Setting of flags are superfluous here for callers (and ECE is
+- * not even correctly set)
+- */
+- tcp_init_nondata_skb(skb, tcp_rsk(req)->snt_isn,
+- TCPHDR_SYN | TCPHDR_ACK);
+-
+- th->seq = htonl(TCP_SKB_CB(skb)->seq);
++ skb->ip_summed = CHECKSUM_PARTIAL;
++ th->seq = htonl(tcp_rsk(req)->snt_isn);
+ /* XXX data is queued and acked as is. No buffer/window check */
+ th->ack_seq = htonl(tcp_rsk(req)->rcv_nxt);
+
+diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
+index db939e4ac68a..bcd3cbe0a02f 100644
+--- a/net/ipv6/ip6_flowlabel.c
++++ b/net/ipv6/ip6_flowlabel.c
+@@ -315,6 +315,7 @@ struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space,
+ }
+ opt_space->dst1opt = fopt->dst1opt;
+ opt_space->opt_flen = fopt->opt_flen;
++ opt_space->tot_len = fopt->tot_len;
+ return opt_space;
+ }
+ EXPORT_SYMBOL_GPL(fl6_merge_options);
+diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
+index 29a1ffa72cd0..7a6317671d32 100644
+--- a/net/ipv6/ip6_output.c
++++ b/net/ipv6/ip6_output.c
+@@ -1180,11 +1180,11 @@ static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
+ if (WARN_ON(v6_cork->opt))
+ return -EINVAL;
+
+- v6_cork->opt = kzalloc(opt->tot_len, sk->sk_allocation);
++ v6_cork->opt = kzalloc(sizeof(*opt), sk->sk_allocation);
+ if (unlikely(!v6_cork->opt))
+ return -ENOBUFS;
+
+- v6_cork->opt->tot_len = opt->tot_len;
++ v6_cork->opt->tot_len = sizeof(*opt);
+ v6_cork->opt->opt_flen = opt->opt_flen;
+ v6_cork->opt->opt_nflen = opt->opt_nflen;
+
+diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
+index afbb50e378ec..2d4d2230f976 100644
+--- a/net/l2tp/l2tp_ppp.c
++++ b/net/l2tp/l2tp_ppp.c
+@@ -1015,6 +1015,9 @@ static int pppol2tp_session_ioctl(struct l2tp_session *session,
+ session->name, cmd, arg);
+
+ sk = ps->sock;
++ if (!sk)
++ return -EBADR;
++
+ sock_hold(sk);
+
+ switch (cmd) {
+diff --git a/net/mac80211/key.c b/net/mac80211/key.c
+index 81e9785f38bc..2fb91a7a11f0 100644
+--- a/net/mac80211/key.c
++++ b/net/mac80211/key.c
+@@ -4,6 +4,7 @@
+ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
++ * Copyright 2017 Intel Deutschland GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -18,6 +19,7 @@
+ #include <linux/slab.h>
+ #include <linux/export.h>
+ #include <net/mac80211.h>
++#include <crypto/algapi.h>
+ #include <asm/unaligned.h>
+ #include "ieee80211_i.h"
+ #include "driver-ops.h"
+@@ -603,6 +605,39 @@ void ieee80211_key_free_unused(struct ieee80211_key *key)
+ ieee80211_key_free_common(key);
+ }
+
++static bool ieee80211_key_identical(struct ieee80211_sub_if_data *sdata,
++ struct ieee80211_key *old,
++ struct ieee80211_key *new)
++{
++ u8 tkip_old[WLAN_KEY_LEN_TKIP], tkip_new[WLAN_KEY_LEN_TKIP];
++ u8 *tk_old, *tk_new;
++
++ if (!old || new->conf.keylen != old->conf.keylen)
++ return false;
++
++ tk_old = old->conf.key;
++ tk_new = new->conf.key;
++
++ /*
++ * In station mode, don't compare the TX MIC key, as it's never used
++ * and offloaded rekeying may not care to send it to the host. This
++ * is the case in iwlwifi, for example.
++ */
++ if (sdata->vif.type == NL80211_IFTYPE_STATION &&
++ new->conf.cipher == WLAN_CIPHER_SUITE_TKIP &&
++ new->conf.keylen == WLAN_KEY_LEN_TKIP &&
++ !(new->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
++ memcpy(tkip_old, tk_old, WLAN_KEY_LEN_TKIP);
++ memcpy(tkip_new, tk_new, WLAN_KEY_LEN_TKIP);
++ memset(tkip_old + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY, 0, 8);
++ memset(tkip_new + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY, 0, 8);
++ tk_old = tkip_old;
++ tk_new = tkip_new;
++ }
++
++ return !crypto_memneq(tk_old, tk_new, new->conf.keylen);
++}
++
+ int ieee80211_key_link(struct ieee80211_key *key,
+ struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta)
+@@ -614,9 +649,6 @@ int ieee80211_key_link(struct ieee80211_key *key,
+
+ pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE;
+ idx = key->conf.keyidx;
+- key->local = sdata->local;
+- key->sdata = sdata;
+- key->sta = sta;
+
+ mutex_lock(&sdata->local->key_mtx);
+
+@@ -627,6 +659,20 @@ int ieee80211_key_link(struct ieee80211_key *key,
+ else
+ old_key = key_mtx_dereference(sdata->local, sdata->keys[idx]);
+
++ /*
++ * Silently accept key re-installation without really installing the
++ * new version of the key to avoid nonce reuse or replay issues.
++ */
++ if (ieee80211_key_identical(sdata, old_key, key)) {
++ ieee80211_key_free_unused(key);
++ ret = 0;
++ goto out;
++ }
++
++ key->local = sdata->local;
++ key->sdata = sdata;
++ key->sta = sta;
++
+ increment_tailroom_need_count(sdata);
+
+ ieee80211_key_replace(sdata, sta, pairwise, old_key, key);
+@@ -642,6 +688,7 @@ int ieee80211_key_link(struct ieee80211_key *key,
+ ret = 0;
+ }
+
++ out:
+ mutex_unlock(&sdata->local->key_mtx);
+
+ return ret;
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index dbc32b19c574..1c0d4aee783d 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -2684,7 +2684,7 @@ static int netlink_dump(struct sock *sk)
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ struct module *module;
+- int len, err = -ENOBUFS;
++ int err = -ENOBUFS;
+ int alloc_min_size;
+ int alloc_size;
+
+@@ -2734,9 +2734,11 @@ static int netlink_dump(struct sock *sk)
+ skb_reserve(skb, skb_tailroom(skb) - alloc_size);
+ netlink_skb_set_owner_r(skb, sk);
+
+- len = cb->dump(skb, cb);
++ if (nlk->dump_done_errno > 0)
++ nlk->dump_done_errno = cb->dump(skb, cb);
+
+- if (len > 0) {
++ if (nlk->dump_done_errno > 0 ||
++ skb_tailroom(skb) < nlmsg_total_size(sizeof(nlk->dump_done_errno))) {
+ mutex_unlock(nlk->cb_mutex);
+
+ if (sk_filter(sk, skb))
+@@ -2746,13 +2748,15 @@ static int netlink_dump(struct sock *sk)
+ return 0;
+ }
+
+- nlh = nlmsg_put_answer(skb, cb, NLMSG_DONE, sizeof(len), NLM_F_MULTI);
+- if (!nlh)
++ nlh = nlmsg_put_answer(skb, cb, NLMSG_DONE,
++ sizeof(nlk->dump_done_errno), NLM_F_MULTI);
++ if (WARN_ON(!nlh))
+ goto errout_skb;
+
+ nl_dump_check_consistent(cb, nlh);
+
+- memcpy(nlmsg_data(nlh), &len, sizeof(len));
++ memcpy(nlmsg_data(nlh), &nlk->dump_done_errno,
++ sizeof(nlk->dump_done_errno));
+
+ if (sk_filter(sk, skb))
+ kfree_skb(skb);
+@@ -2826,6 +2830,7 @@ int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
+ cb->skb = skb;
+
+ nlk->cb_running = true;
++ nlk->dump_done_errno = INT_MAX;
+
+ mutex_unlock(nlk->cb_mutex);
+
+diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h
+index 14437d9b1965..34dc71b0fe56 100644
+--- a/net/netlink/af_netlink.h
++++ b/net/netlink/af_netlink.h
+@@ -37,6 +37,7 @@ struct netlink_sock {
+ wait_queue_head_t wait;
+ bool bound;
+ bool cb_running;
++ int dump_done_errno;
+ struct netlink_callback cb;
+ struct mutex *cb_mutex;
+ struct mutex cb_def_mutex;
+diff --git a/net/sctp/input.c b/net/sctp/input.c
+index 2d7859c03fd2..71c2ef84c5b0 100644
+--- a/net/sctp/input.c
++++ b/net/sctp/input.c
+@@ -420,7 +420,7 @@ void sctp_icmp_redirect(struct sock *sk, struct sctp_transport *t,
+ {
+ struct dst_entry *dst;
+
+- if (!t)
++ if (sock_owned_by_user(sk) || !t)
+ return;
+ dst = sctp_transport_dst_check(t);
+ if (dst)
+diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
+index 2bb7240c6f8b..00db4424faf1 100644
+--- a/net/sctp/ipv6.c
++++ b/net/sctp/ipv6.c
+@@ -787,6 +787,8 @@ static void sctp_inet6_skb_msgname(struct sk_buff *skb, char *msgname,
+ if (ipv6_addr_type(&addr->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL) {
+ struct sctp_ulpevent *ev = sctp_skb2event(skb);
+ addr->v6.sin6_scope_id = ev->iif;
++ } else {
++ addr->v6.sin6_scope_id = 0;
+ }
+ }
+
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index 34d3d4056a11..cb7193ed4284 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -168,6 +168,36 @@ static inline void sctp_set_owner_w(struct sctp_chunk *chunk)
+ sk_mem_charge(sk, chunk->skb->truesize);
+ }
+
++static void sctp_clear_owner_w(struct sctp_chunk *chunk)
++{
++ skb_orphan(chunk->skb);
++}
++
++static void sctp_for_each_tx_datachunk(struct sctp_association *asoc,
++ void (*cb)(struct sctp_chunk *))
++
++{
++ struct sctp_outq *q = &asoc->outqueue;
++ struct sctp_transport *t;
++ struct sctp_chunk *chunk;
++
++ list_for_each_entry(t, &asoc->peer.transport_addr_list, transports)
++ list_for_each_entry(chunk, &t->transmitted, transmitted_list)
++ cb(chunk);
++
++ list_for_each_entry(chunk, &q->retransmit, list)
++ cb(chunk);
++
++ list_for_each_entry(chunk, &q->sacked, list)
++ cb(chunk);
++
++ list_for_each_entry(chunk, &q->abandoned, list)
++ cb(chunk);
++
++ list_for_each_entry(chunk, &q->out_chunk_list, list)
++ cb(chunk);
++}
++
+ /* Verify that this is a valid address. */
+ static inline int sctp_verify_addr(struct sock *sk, union sctp_addr *addr,
+ int len)
+@@ -4433,6 +4463,10 @@ int sctp_do_peeloff(struct sock *sk, sctp_assoc_t id, struct socket **sockp)
+ struct socket *sock;
+ int err = 0;
+
++ /* Do not peel off from one netns to another one. */
++ if (!net_eq(current->nsproxy->net_ns, sock_net(sk)))
++ return -EINVAL;
++
+ if (!asoc)
+ return -EINVAL;
+
+@@ -7358,7 +7392,9 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
+ * paths won't try to lock it and then oldsk.
+ */
+ lock_sock_nested(newsk, SINGLE_DEPTH_NESTING);
++ sctp_for_each_tx_datachunk(assoc, sctp_clear_owner_w);
+ sctp_assoc_migrate(assoc, newsk);
++ sctp_for_each_tx_datachunk(assoc, sctp_set_owner_w);
+
+ /* If the association on the newsk is already closed before accept()
+ * is called, set RCV_SHUTDOWN flag.
+diff --git a/net/unix/diag.c b/net/unix/diag.c
+index 4d9679701a6d..384c84e83462 100644
+--- a/net/unix/diag.c
++++ b/net/unix/diag.c
+@@ -257,6 +257,8 @@ static int unix_diag_get_exact(struct sk_buff *in_skb,
+ err = -ENOENT;
+ if (sk == NULL)
+ goto out_nosk;
++ if (!net_eq(sock_net(sk), net))
++ goto out;
+
+ err = sock_diag_check_cookie(sk, req->udiag_cookie);
+ if (err)
+diff --git a/samples/trace_events/trace-events-sample.c b/samples/trace_events/trace-events-sample.c
+index 880a7d1d27d2..4ccff66523c9 100644
+--- a/samples/trace_events/trace-events-sample.c
++++ b/samples/trace_events/trace-events-sample.c
+@@ -78,28 +78,36 @@ static int simple_thread_fn(void *arg)
+ }
+
+ static DEFINE_MUTEX(thread_mutex);
++static int simple_thread_cnt;
+
+ void foo_bar_reg(void)
+ {
++ mutex_lock(&thread_mutex);
++ if (simple_thread_cnt++)
++ goto out;
++
+ pr_info("Starting thread for foo_bar_fn\n");
+ /*
+ * We shouldn't be able to start a trace when the module is
+ * unloading (there's other locks to prevent that). But
+ * for consistency sake, we still take the thread_mutex.
+ */
+- mutex_lock(&thread_mutex);
+ simple_tsk_fn = kthread_run(simple_thread_fn, NULL, "event-sample-fn");
++ out:
+ mutex_unlock(&thread_mutex);
+ }
+
+ void foo_bar_unreg(void)
+ {
+- pr_info("Killing thread for foo_bar_fn\n");
+- /* protect against module unloading */
+ mutex_lock(&thread_mutex);
++ if (--simple_thread_cnt)
++ goto out;
++
++ pr_info("Killing thread for foo_bar_fn\n");
+ if (simple_tsk_fn)
+ kthread_stop(simple_tsk_fn);
+ simple_tsk_fn = NULL;
++ out:
+ mutex_unlock(&thread_mutex);
+ }
+
+diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
+index 5970161625a5..9ee9139b0b07 100644
+--- a/security/integrity/ima/ima_appraise.c
++++ b/security/integrity/ima/ima_appraise.c
+@@ -297,6 +297,9 @@ void ima_update_xattr(struct integrity_iint_cache *iint, struct file *file)
+ if (iint->flags & IMA_DIGSIG)
+ return;
+
++ if (iint->ima_file_status != INTEGRITY_PASS)
++ return;
++
+ rc = ima_collect_measurement(iint, file, NULL, NULL);
+ if (rc < 0)
+ return;
+diff --git a/security/keys/Kconfig b/security/keys/Kconfig
+index 72483b8f1be5..1edb37eea81d 100644
+--- a/security/keys/Kconfig
++++ b/security/keys/Kconfig
+@@ -20,6 +20,10 @@ config KEYS
+
+ If you are unsure as to whether this is required, answer N.
+
++config KEYS_COMPAT
++ def_bool y
++ depends on COMPAT && KEYS
++
+ config PERSISTENT_KEYRINGS
+ bool "Enable register of persistent per-UID keyrings"
+ depends on KEYS
+diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
+index 8e1c0099bb66..89d5695c51cd 100644
+--- a/security/keys/encrypted-keys/encrypted.c
++++ b/security/keys/encrypted-keys/encrypted.c
+@@ -315,6 +315,13 @@ static struct key *request_user_key(const char *master_desc, u8 **master_key,
+
+ down_read(&ukey->sem);
+ upayload = ukey->payload.data;
++ if (!upayload) {
++ /* key was revoked before we acquired its semaphore */
++ up_read(&ukey->sem);
++ key_put(ukey);
++ ukey = ERR_PTR(-EKEYREVOKED);
++ goto error;
++ }
+ *master_key = upayload->data;
+ *master_keylen = upayload->datalen;
+ error:
+diff --git a/security/keys/keyring.c b/security/keys/keyring.c
+index 6d913f40b6f0..ac424781d54d 100644
+--- a/security/keys/keyring.c
++++ b/security/keys/keyring.c
+@@ -452,34 +452,33 @@ static long keyring_read(const struct key *keyring,
+ char __user *buffer, size_t buflen)
+ {
+ struct keyring_read_iterator_context ctx;
+- unsigned long nr_keys;
+- int ret;
++ long ret;
+
+ kenter("{%d},,%zu", key_serial(keyring), buflen);
+
+ if (buflen & (sizeof(key_serial_t) - 1))
+ return -EINVAL;
+
+- nr_keys = keyring->keys.nr_leaves_on_tree;
+- if (nr_keys == 0)
+- return 0;
+-
+- /* Calculate how much data we could return */
+- if (!buffer || !buflen)
+- return nr_keys * sizeof(key_serial_t);
+-
+- /* Copy the IDs of the subscribed keys into the buffer */
+- ctx.buffer = (key_serial_t __user *)buffer;
+- ctx.buflen = buflen;
+- ctx.count = 0;
+- ret = assoc_array_iterate(&keyring->keys, keyring_read_iterator, &ctx);
+- if (ret < 0) {
+- kleave(" = %d [iterate]", ret);
+- return ret;
++ /* Copy as many key IDs as fit into the buffer */
++ if (buffer && buflen) {
++ ctx.buffer = (key_serial_t __user *)buffer;
++ ctx.buflen = buflen;
++ ctx.count = 0;
++ ret = assoc_array_iterate(&keyring->keys,
++ keyring_read_iterator, &ctx);
++ if (ret < 0) {
++ kleave(" = %ld [iterate]", ret);
++ return ret;
++ }
+ }
+
+- kleave(" = %zu [ok]", ctx.count);
+- return ctx.count;
++ /* Return the size of the buffer needed */
++ ret = keyring->keys.nr_leaves_on_tree * sizeof(key_serial_t);
++ if (ret <= buflen)
++ kleave("= %ld [ok]", ret);
++ else
++ kleave("= %ld [buffer too small]", ret);
++ return ret;
+ }
+
+ /*
+diff --git a/sound/core/seq/oss/seq_oss_midi.c b/sound/core/seq/oss/seq_oss_midi.c
+index 96e8395ae586..74c68a0f8abe 100644
+--- a/sound/core/seq/oss/seq_oss_midi.c
++++ b/sound/core/seq/oss/seq_oss_midi.c
+@@ -612,9 +612,7 @@ send_midi_event(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, struct seq
+ if (!dp->timer->running)
+ len = snd_seq_oss_timer_start(dp->timer);
+ if (ev->type == SNDRV_SEQ_EVENT_SYSEX) {
+- if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
+- snd_seq_oss_readq_puts(dp->readq, mdev->seq_device,
+- ev->data.ext.ptr, ev->data.ext.len);
++ snd_seq_oss_readq_sysex(dp->readq, mdev->seq_device, ev);
+ } else {
+ len = snd_midi_event_decode(mdev->coder, msg, sizeof(msg), ev);
+ if (len > 0)
+diff --git a/sound/core/seq/oss/seq_oss_readq.c b/sound/core/seq/oss/seq_oss_readq.c
+index c080c73cea04..ed7c7bc038aa 100644
+--- a/sound/core/seq/oss/seq_oss_readq.c
++++ b/sound/core/seq/oss/seq_oss_readq.c
+@@ -118,6 +118,35 @@ snd_seq_oss_readq_puts(struct seq_oss_readq *q, int dev, unsigned char *data, in
+ return 0;
+ }
+
++/*
++ * put MIDI sysex bytes; the event buffer may be chained, thus it has
++ * to be expanded via snd_seq_dump_var_event().
++ */
++struct readq_sysex_ctx {
++ struct seq_oss_readq *readq;
++ int dev;
++};
++
++static int readq_dump_sysex(void *ptr, void *buf, int count)
++{
++ struct readq_sysex_ctx *ctx = ptr;
++
++ return snd_seq_oss_readq_puts(ctx->readq, ctx->dev, buf, count);
++}
++
++int snd_seq_oss_readq_sysex(struct seq_oss_readq *q, int dev,
++ struct snd_seq_event *ev)
++{
++ struct readq_sysex_ctx ctx = {
++ .readq = q,
++ .dev = dev
++ };
++
++ if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) != SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
++ return 0;
++ return snd_seq_dump_var_event(ev, readq_dump_sysex, &ctx);
++}
++
+ /*
+ * copy an event to input queue:
+ * return zero if enqueued
+diff --git a/sound/core/seq/oss/seq_oss_readq.h b/sound/core/seq/oss/seq_oss_readq.h
+index f1463f1f449e..8d033ca2d23f 100644
+--- a/sound/core/seq/oss/seq_oss_readq.h
++++ b/sound/core/seq/oss/seq_oss_readq.h
+@@ -44,6 +44,8 @@ void snd_seq_oss_readq_delete(struct seq_oss_readq *q);
+ void snd_seq_oss_readq_clear(struct seq_oss_readq *readq);
+ unsigned int snd_seq_oss_readq_poll(struct seq_oss_readq *readq, struct file *file, poll_table *wait);
+ int snd_seq_oss_readq_puts(struct seq_oss_readq *readq, int dev, unsigned char *data, int len);
++int snd_seq_oss_readq_sysex(struct seq_oss_readq *q, int dev,
++ struct snd_seq_event *ev);
+ int snd_seq_oss_readq_put_event(struct seq_oss_readq *readq, union evrec *ev);
+ int snd_seq_oss_readq_put_timestamp(struct seq_oss_readq *readq, unsigned long curt, int seq_mode);
+ int snd_seq_oss_readq_pick(struct seq_oss_readq *q, union evrec *rec);
+diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
+index 5d2d3d63abcf..e3767122dd0b 100644
+--- a/sound/core/seq/seq_clientmgr.c
++++ b/sound/core/seq/seq_clientmgr.c
+@@ -676,7 +676,7 @@ static int deliver_to_subscribers(struct snd_seq_client *client,
+ if (atomic)
+ read_lock(&grp->list_lock);
+ else
+- down_read(&grp->list_mutex);
++ down_read_nested(&grp->list_mutex, hop);
+ list_for_each_entry(subs, &grp->list_head, src_list) {
+ /* both ports ready? */
+ if (atomic_read(&subs->ref_count) != 2)
+diff --git a/sound/core/seq/seq_device.c b/sound/core/seq/seq_device.c
+index d99f99d61983..59ec91589ad9 100644
+--- a/sound/core/seq/seq_device.c
++++ b/sound/core/seq/seq_device.c
+@@ -148,8 +148,10 @@ void snd_seq_device_load_drivers(void)
+ flush_work(&autoload_work);
+ }
+ EXPORT_SYMBOL(snd_seq_device_load_drivers);
++#define cancel_autoload_drivers() cancel_work_sync(&autoload_work)
+ #else
+ #define queue_autoload_drivers() /* NOP */
++#define cancel_autoload_drivers() /* NOP */
+ #endif
+
+ /*
+@@ -159,6 +161,7 @@ static int snd_seq_device_dev_free(struct snd_device *device)
+ {
+ struct snd_seq_device *dev = device->device_data;
+
++ cancel_autoload_drivers();
+ put_device(&dev->dev);
+ return 0;
+ }
+diff --git a/sound/core/timer_compat.c b/sound/core/timer_compat.c
+index 2e908225d754..0b4b028e8e98 100644
+--- a/sound/core/timer_compat.c
++++ b/sound/core/timer_compat.c
+@@ -106,7 +106,8 @@ enum {
+ #endif /* CONFIG_X86_X32 */
+ };
+
+-static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
++static long __snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd,
++ unsigned long arg)
+ {
+ void __user *argp = compat_ptr(arg);
+
+@@ -127,7 +128,7 @@ static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, uns
+ case SNDRV_TIMER_IOCTL_PAUSE:
+ case SNDRV_TIMER_IOCTL_PAUSE_OLD:
+ case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
+- return snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
++ return __snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
+ case SNDRV_TIMER_IOCTL_INFO32:
+ return snd_timer_user_info_compat(file, argp);
+ case SNDRV_TIMER_IOCTL_STATUS32:
+@@ -139,3 +140,15 @@ static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, uns
+ }
+ return -ENOIOCTLCMD;
+ }
++
++static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd,
++ unsigned long arg)
++{
++ struct snd_timer_user *tu = file->private_data;
++ long ret;
++
++ mutex_lock(&tu->ioctl_lock);
++ ret = __snd_timer_user_ioctl_compat(file, cmd, arg);
++ mutex_unlock(&tu->ioctl_lock);
++ return ret;
++}
+diff --git a/sound/drivers/vx/vx_pcm.c b/sound/drivers/vx/vx_pcm.c
+index 11467272089e..ea7b377f0378 100644
+--- a/sound/drivers/vx/vx_pcm.c
++++ b/sound/drivers/vx/vx_pcm.c
+@@ -1015,7 +1015,7 @@ static void vx_pcm_capture_update(struct vx_core *chip, struct snd_pcm_substream
+ int size, space, count;
+ struct snd_pcm_runtime *runtime = subs->runtime;
+
+- if (! pipe->prepared || (chip->chip_status & VX_STAT_IS_STALE))
++ if (!pipe->running || (chip->chip_status & VX_STAT_IS_STALE))
+ return;
+
+ size = runtime->buffer_size - snd_pcm_capture_avail(runtime);
+@@ -1048,8 +1048,10 @@ static void vx_pcm_capture_update(struct vx_core *chip, struct snd_pcm_substream
+ /* ok, let's accelerate! */
+ int align = pipe->align * 3;
+ space = (count / align) * align;
+- vx_pseudo_dma_read(chip, runtime, pipe, space);
+- count -= space;
++ if (space > 0) {
++ vx_pseudo_dma_read(chip, runtime, pipe, space);
++ count -= space;
++ }
+ }
+ /* read the rest of bytes */
+ while (count > 0) {
+diff --git a/sound/pci/vx222/vx222_ops.c b/sound/pci/vx222/vx222_ops.c
+index af83b3b38052..8e457ea27f89 100644
+--- a/sound/pci/vx222/vx222_ops.c
++++ b/sound/pci/vx222/vx222_ops.c
+@@ -269,12 +269,12 @@ static void vx2_dma_write(struct vx_core *chip, struct snd_pcm_runtime *runtime,
+
+ /* Transfer using pseudo-dma.
+ */
+- if (offset + count > pipe->buffer_bytes) {
++ if (offset + count >= pipe->buffer_bytes) {
+ int length = pipe->buffer_bytes - offset;
+ count -= length;
+ length >>= 2; /* in 32bit words */
+ /* Transfer using pseudo-dma. */
+- while (length-- > 0) {
++ for (; length > 0; length--) {
+ outl(cpu_to_le32(*addr), port);
+ addr++;
+ }
+@@ -284,7 +284,7 @@ static void vx2_dma_write(struct vx_core *chip, struct snd_pcm_runtime *runtime,
+ pipe->hw_ptr += count;
+ count >>= 2; /* in 32bit words */
+ /* Transfer using pseudo-dma. */
+- while (count-- > 0) {
++ for (; count > 0; count--) {
+ outl(cpu_to_le32(*addr), port);
+ addr++;
+ }
+@@ -307,12 +307,12 @@ static void vx2_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime,
+ vx2_setup_pseudo_dma(chip, 0);
+ /* Transfer using pseudo-dma.
+ */
+- if (offset + count > pipe->buffer_bytes) {
++ if (offset + count >= pipe->buffer_bytes) {
+ int length = pipe->buffer_bytes - offset;
+ count -= length;
+ length >>= 2; /* in 32bit words */
+ /* Transfer using pseudo-dma. */
+- while (length-- > 0)
++ for (; length > 0; length--)
+ *addr++ = le32_to_cpu(inl(port));
+ addr = (u32 *)runtime->dma_area;
+ pipe->hw_ptr = 0;
+@@ -320,7 +320,7 @@ static void vx2_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime,
+ pipe->hw_ptr += count;
+ count >>= 2; /* in 32bit words */
+ /* Transfer using pseudo-dma. */
+- while (count-- > 0)
++ for (; count > 0; count--)
+ *addr++ = le32_to_cpu(inl(port));
+
+ vx2_release_pseudo_dma(chip);
+diff --git a/sound/pcmcia/vx/vxp_ops.c b/sound/pcmcia/vx/vxp_ops.c
+index 281972913c32..56aa1ba73ccc 100644
+--- a/sound/pcmcia/vx/vxp_ops.c
++++ b/sound/pcmcia/vx/vxp_ops.c
+@@ -369,12 +369,12 @@ static void vxp_dma_write(struct vx_core *chip, struct snd_pcm_runtime *runtime,
+ unsigned short *addr = (unsigned short *)(runtime->dma_area + offset);
+
+ vx_setup_pseudo_dma(chip, 1);
+- if (offset + count > pipe->buffer_bytes) {
++ if (offset + count >= pipe->buffer_bytes) {
+ int length = pipe->buffer_bytes - offset;
+ count -= length;
+ length >>= 1; /* in 16bit words */
+ /* Transfer using pseudo-dma. */
+- while (length-- > 0) {
++ for (; length > 0; length--) {
+ outw(cpu_to_le16(*addr), port);
+ addr++;
+ }
+@@ -384,7 +384,7 @@ static void vxp_dma_write(struct vx_core *chip, struct snd_pcm_runtime *runtime,
+ pipe->hw_ptr += count;
+ count >>= 1; /* in 16bit words */
+ /* Transfer using pseudo-dma. */
+- while (count-- > 0) {
++ for (; count > 0; count--) {
+ outw(cpu_to_le16(*addr), port);
+ addr++;
+ }
+@@ -411,12 +411,12 @@ static void vxp_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime,
+ if (snd_BUG_ON(count % 2))
+ return;
+ vx_setup_pseudo_dma(chip, 0);
+- if (offset + count > pipe->buffer_bytes) {
++ if (offset + count >= pipe->buffer_bytes) {
+ int length = pipe->buffer_bytes - offset;
+ count -= length;
+ length >>= 1; /* in 16bit words */
+ /* Transfer using pseudo-dma. */
+- while (length-- > 0)
++ for (; length > 0; length--)
+ *addr++ = le16_to_cpu(inw(port));
+ addr = (unsigned short *)runtime->dma_area;
+ pipe->hw_ptr = 0;
+@@ -424,7 +424,7 @@ static void vxp_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime,
+ pipe->hw_ptr += count;
+ count >>= 1; /* in 16bit words */
+ /* Transfer using pseudo-dma. */
+- while (count-- > 1)
++ for (; count > 1; count--)
+ *addr++ = le16_to_cpu(inw(port));
+ /* Disable DMA */
+ pchip->regDIALOG &= ~VXP_DLG_DMAREAD_SEL_MASK;
+diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c
+index fa2e690e51c8..12024799fda1 100644
+--- a/sound/soc/codecs/adau17x1.c
++++ b/sound/soc/codecs/adau17x1.c
+@@ -89,6 +89,27 @@ static int adau17x1_pll_event(struct snd_soc_dapm_widget *w,
+ return 0;
+ }
+
++static int adau17x1_adc_fixup(struct snd_soc_dapm_widget *w,
++ struct snd_kcontrol *kcontrol, int event)
++{
++ struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
++ struct adau *adau = snd_soc_codec_get_drvdata(codec);
++
++ /*
++ * If we are capturing, toggle the ADOSR bit in Converter Control 0 to
++ * avoid losing SNR (workaround from ADI). This must be done after
++ * the ADC(s) have been enabled. According to the data sheet, it is
++ * normally illegal to set this bit when the sampling rate is 96 kHz,
++ * but according to ADI it is acceptable for this workaround.
++ */
++ regmap_update_bits(adau->regmap, ADAU17X1_CONVERTER0,
++ ADAU17X1_CONVERTER0_ADOSR, ADAU17X1_CONVERTER0_ADOSR);
++ regmap_update_bits(adau->regmap, ADAU17X1_CONVERTER0,
++ ADAU17X1_CONVERTER0_ADOSR, 0);
++
++ return 0;
++}
++
+ static const char * const adau17x1_mono_stereo_text[] = {
+ "Stereo",
+ "Mono Left Channel (L+R)",
+@@ -120,7 +141,8 @@ static const struct snd_soc_dapm_widget adau17x1_dapm_widgets[] = {
+ SND_SOC_DAPM_MUX("Right DAC Mode Mux", SND_SOC_NOPM, 0, 0,
+ &adau17x1_dac_mode_mux),
+
+- SND_SOC_DAPM_ADC("Left Decimator", NULL, ADAU17X1_ADC_CONTROL, 0, 0),
++ SND_SOC_DAPM_ADC_E("Left Decimator", NULL, ADAU17X1_ADC_CONTROL, 0, 0,
++ adau17x1_adc_fixup, SND_SOC_DAPM_POST_PMU),
+ SND_SOC_DAPM_ADC("Right Decimator", NULL, ADAU17X1_ADC_CONTROL, 1, 0),
+ SND_SOC_DAPM_DAC("Left DAC", NULL, ADAU17X1_DAC_CONTROL0, 0, 0),
+ SND_SOC_DAPM_DAC("Right DAC", NULL, ADAU17X1_DAC_CONTROL0, 1, 0),
+diff --git a/sound/soc/codecs/adau17x1.h b/sound/soc/codecs/adau17x1.h
+index e13583e6ff56..6b46461cdc03 100644
+--- a/sound/soc/codecs/adau17x1.h
++++ b/sound/soc/codecs/adau17x1.h
+@@ -123,5 +123,7 @@ bool adau17x1_has_dsp(struct adau *adau);
+
+ #define ADAU17X1_CONVERTER0_CONVSR_MASK 0x7
+
++#define ADAU17X1_CONVERTER0_ADOSR BIT(3)
++
+
+ #endif
+diff --git a/tools/testing/selftests/firmware/fw_filesystem.sh b/tools/testing/selftests/firmware/fw_filesystem.sh
+index 3fc6c10c2479..874694e647ae 100755
+--- a/tools/testing/selftests/firmware/fw_filesystem.sh
++++ b/tools/testing/selftests/firmware/fw_filesystem.sh
+@@ -35,8 +35,16 @@ echo "ABCD0123" >"$FW"
+
+ NAME=$(basename "$FW")
+
++if printf '\000' >"$DIR"/trigger_request 2> /dev/null; then
++ echo "$0: empty filename should not succeed" >&2
++ exit 1
++fi
++
+ # Request a firmware that doesn't exist, it should fail.
+-echo -n "nope-$NAME" >"$DIR"/trigger_request
++if echo -n "nope-$NAME" >"$DIR"/trigger_request 2> /dev/null; then
++ echo "$0: firmware shouldn't have loaded" >&2
++ exit 1
++fi
+ if diff -q "$FW" /dev/test_firmware >/dev/null ; then
+ echo "$0: firmware was not expected to match" >&2
+ exit 1
+diff --git a/tools/testing/selftests/firmware/fw_userhelper.sh b/tools/testing/selftests/firmware/fw_userhelper.sh
+index 6efbade12139..97126d30ff04 100755
+--- a/tools/testing/selftests/firmware/fw_userhelper.sh
++++ b/tools/testing/selftests/firmware/fw_userhelper.sh
+@@ -54,9 +54,33 @@ trap "test_finish" EXIT
+ echo "ABCD0123" >"$FW"
+ NAME=$(basename "$FW")
+
++DEVPATH="$DIR"/"nope-$NAME"/loading
++
+ # Test failure when doing nothing (timeout works).
+-echo 1 >/sys/class/firmware/timeout
+-echo -n "$NAME" >"$DIR"/trigger_request
++echo -n 2 >/sys/class/firmware/timeout
++echo -n "nope-$NAME" >"$DIR"/trigger_request 2>/dev/null &
++
++# Give the kernel some time to load the loading file, must be less
++# than the timeout above.
++sleep 1
++if [ ! -f $DEVPATH ]; then
++ echo "$0: fallback mechanism immediately cancelled"
++ echo ""
++ echo "The file never appeared: $DEVPATH"
++ echo ""
++ echo "This might be a distribution udev rule setup by your distribution"
++ echo "to immediately cancel all fallback requests, this must be"
++ echo "removed before running these tests. To confirm look for"
++ echo "a firmware rule like /lib/udev/rules.d/50-firmware.rules"
++ echo "and see if you have something like this:"
++ echo ""
++ echo "SUBSYSTEM==\"firmware\", ACTION==\"add\", ATTR{loading}=\"-1\""
++ echo ""
++ echo "If you do remove this file or comment out this line before"
++ echo "proceeding with these tests."
++ exit 1
++fi
++
+ if diff -q "$FW" /dev/test_firmware >/dev/null ; then
+ echo "$0: firmware was not expected to match" >&2
+ exit 1
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-10-18 11:51 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-10-18 11:51 UTC (permalink / raw
To: gentoo-commits
commit: f3c55170f5ab7f92a5cef3ea0b6c5f9f910d1145
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Oct 18 11:51:15 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Oct 18 11:51:15 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=f3c55170
Linux patches 4.1.44 and 4.1.45
0000_README | 8 +
1043_linux-4.1.44.patch | 4971 +++++++++++++++++++++++++++++++++++++++++++++++
1044_linux-4.1.45.patch | 4031 ++++++++++++++++++++++++++++++++++++++
3 files changed, 9010 insertions(+)
diff --git a/0000_README b/0000_README
index 959795e..43ea8eb 100644
--- a/0000_README
+++ b/0000_README
@@ -215,6 +215,14 @@ Patch: 1042_linux-4.1.43.patch
From: http://www.kernel.org
Desc: Linux 4.1.43
+Patch: 1043_linux-4.1.44.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.44
+
+Patch: 1044_linux-4.1.45.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.45
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1043_linux-4.1.44.patch b/1043_linux-4.1.44.patch
new file mode 100644
index 0000000..962183f
--- /dev/null
+++ b/1043_linux-4.1.44.patch
@@ -0,0 +1,4971 @@
+diff --git a/Makefile b/Makefile
+index 50d0a93fa343..9c7aa08c70b7 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 43
++SUBLEVEL = 44
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/armada-388-gp.dts b/arch/arm/boot/dts/armada-388-gp.dts
+index 757ac079e7f2..bcf4f1b6b2bc 100644
+--- a/arch/arm/boot/dts/armada-388-gp.dts
++++ b/arch/arm/boot/dts/armada-388-gp.dts
+@@ -91,7 +91,7 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pca0_pins>;
+ interrupt-parent = <&gpio0>;
+- interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
++ interrupts = <18 IRQ_TYPE_LEVEL_LOW>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+@@ -103,7 +103,7 @@
+ compatible = "nxp,pca9555";
+ pinctrl-names = "default";
+ interrupt-parent = <&gpio0>;
+- interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
++ interrupts = <18 IRQ_TYPE_LEVEL_LOW>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts
+index 5f5e0f3d5b64..27cd4abfc74d 100644
+--- a/arch/arm/boot/dts/omap3-n900.dts
++++ b/arch/arm/boot/dts/omap3-n900.dts
+@@ -697,6 +697,8 @@
+ vmmc_aux-supply = <&vsim>;
+ bus-width = <8>;
+ non-removable;
++ no-sdio;
++ no-sd;
+ };
+
+ &mmc3 {
+diff --git a/arch/arm/configs/s3c2410_defconfig b/arch/arm/configs/s3c2410_defconfig
+index f3142369f594..01116ee1284b 100644
+--- a/arch/arm/configs/s3c2410_defconfig
++++ b/arch/arm/configs/s3c2410_defconfig
+@@ -87,9 +87,9 @@ CONFIG_IPV6_TUNNEL=m
+ CONFIG_NETFILTER=y
+ CONFIG_NF_CONNTRACK=m
+ CONFIG_NF_CONNTRACK_EVENTS=y
+-CONFIG_NF_CT_PROTO_DCCP=m
+-CONFIG_NF_CT_PROTO_SCTP=m
+-CONFIG_NF_CT_PROTO_UDPLITE=m
++CONFIG_NF_CT_PROTO_DCCP=y
++CONFIG_NF_CT_PROTO_SCTP=y
++CONFIG_NF_CT_PROTO_UDPLITE=y
+ CONFIG_NF_CONNTRACK_AMANDA=m
+ CONFIG_NF_CONNTRACK_FTP=m
+ CONFIG_NF_CONNTRACK_H323=m
+diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
+index bfe2a2f5a644..22b73112b75f 100644
+--- a/arch/arm/include/asm/ftrace.h
++++ b/arch/arm/include/asm/ftrace.h
+@@ -54,6 +54,24 @@ static inline void *return_address(unsigned int level)
+
+ #define ftrace_return_address(n) return_address(n)
+
++#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
++
++static inline bool arch_syscall_match_sym_name(const char *sym,
++ const char *name)
++{
++ if (!strcmp(sym, "sys_mmap2"))
++ sym = "sys_mmap_pgoff";
++ else if (!strcmp(sym, "sys_statfs64_wrapper"))
++ sym = "sys_statfs64";
++ else if (!strcmp(sym, "sys_fstatfs64_wrapper"))
++ sym = "sys_fstatfs64";
++ else if (!strcmp(sym, "sys_arm_fadvise64_64"))
++ sym = "sys_fadvise64_64";
++
++ /* Ignore case since sym may start with "SyS" instead of "sys" */
++ return !strcasecmp(sym, name);
++}
++
+ #endif /* ifndef __ASSEMBLY__ */
+
+ #endif /* _ASM_ARM_FTRACE */
+diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
+index 4e15eed87074..3ca19cdb0eac 100644
+--- a/arch/arm/kvm/mmu.c
++++ b/arch/arm/kvm/mmu.c
+@@ -1611,12 +1611,16 @@ static int kvm_test_age_hva_handler(struct kvm *kvm, gpa_t gpa, void *data)
+
+ int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
+ {
++ if (!kvm->arch.pgd)
++ return 0;
+ trace_kvm_age_hva(start, end);
+ return handle_hva_to_gpa(kvm, start, end, kvm_age_hva_handler, NULL);
+ }
+
+ int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
+ {
++ if (!kvm->arch.pgd)
++ return 0;
+ trace_kvm_test_age_hva(hva);
+ return handle_hva_to_gpa(kvm, hva, hva, kvm_test_age_hva_handler, NULL);
+ }
+diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-ep108.dts b/arch/arm64/boot/dts/xilinx/zynqmp-ep108.dts
+index 0a3f40ecd06d..96235d2b135d 100644
+--- a/arch/arm64/boot/dts/xilinx/zynqmp-ep108.dts
++++ b/arch/arm64/boot/dts/xilinx/zynqmp-ep108.dts
+@@ -26,7 +26,7 @@
+ stdout-path = "serial0:115200n8";
+ };
+
+- memory {
++ memory@0 {
+ device_type = "memory";
+ reg = <0x0 0x0 0x40000000>;
+ };
+diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
+index 11e0b00045cf..0cb2cdfd7309 100644
+--- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
++++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
+@@ -71,7 +71,7 @@
+ <1 10 0xf01>;
+ };
+
+- amba_apu {
++ amba_apu: amba_apu@0 {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <1>;
+@@ -251,7 +251,7 @@
+ };
+
+ i2c0: i2c@ff020000 {
+- compatible = "cdns,i2c-r1p10";
++ compatible = "cdns,i2c-r1p14", "cdns,i2c-r1p10";
+ status = "disabled";
+ interrupt-parent = <&gic>;
+ interrupts = <0 17 4>;
+@@ -262,7 +262,7 @@
+ };
+
+ i2c1: i2c@ff030000 {
+- compatible = "cdns,i2c-r1p10";
++ compatible = "cdns,i2c-r1p14", "cdns,i2c-r1p10";
+ status = "disabled";
+ interrupt-parent = <&gic>;
+ interrupts = <0 18 4>;
+diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
+index fa5efaa5c3ac..16523fbd9671 100644
+--- a/arch/arm64/mm/fault.c
++++ b/arch/arm64/mm/fault.c
+@@ -62,21 +62,21 @@ void show_pte(struct mm_struct *mm, unsigned long addr)
+ break;
+
+ pud = pud_offset(pgd, addr);
+- printk(", *pud=%016llx", pud_val(*pud));
++ pr_cont(", *pud=%016llx", pud_val(*pud));
+ if (pud_none(*pud) || pud_bad(*pud))
+ break;
+
+ pmd = pmd_offset(pud, addr);
+- printk(", *pmd=%016llx", pmd_val(*pmd));
++ pr_cont(", *pmd=%016llx", pmd_val(*pmd));
+ if (pmd_none(*pmd) || pmd_bad(*pmd))
+ break;
+
+ pte = pte_offset_map(pmd, addr);
+- printk(", *pte=%016llx", pte_val(*pte));
++ pr_cont(", *pte=%016llx", pte_val(*pte));
+ pte_unmap(pte);
+ } while(0);
+
+- printk("\n");
++ pr_cont("\n");
+ }
+
+ /*
+diff --git a/arch/mips/include/asm/branch.h b/arch/mips/include/asm/branch.h
+index de781cf54bc7..da80878f2c0d 100644
+--- a/arch/mips/include/asm/branch.h
++++ b/arch/mips/include/asm/branch.h
+@@ -74,10 +74,7 @@ static inline int compute_return_epc(struct pt_regs *regs)
+ return __microMIPS_compute_return_epc(regs);
+ if (cpu_has_mips16)
+ return __MIPS16e_compute_return_epc(regs);
+- return regs->cp0_epc;
+- }
+-
+- if (!delay_slot(regs)) {
++ } else if (!delay_slot(regs)) {
+ regs->cp0_epc += 4;
+ return 0;
+ }
+diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c
+index fe376aa705c5..13254da66ce8 100644
+--- a/arch/mips/kernel/branch.c
++++ b/arch/mips/kernel/branch.c
+@@ -399,7 +399,7 @@ int __MIPS16e_compute_return_epc(struct pt_regs *regs)
+ *
+ * @regs: Pointer to pt_regs
+ * @insn: branch instruction to decode
+- * @returns: -EFAULT on error and forces SIGBUS, and on success
++ * @returns: -EFAULT on error and forces SIGILL, and on success
+ * returns 0 or BRANCH_LIKELY_TAKEN as appropriate after
+ * evaluating the branch.
+ *
+@@ -556,6 +556,7 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
+ /*
+ * These are unconditional and in j_format.
+ */
++ case jalx_op:
+ case jal_op:
+ regs->regs[31] = regs->cp0_epc + 8;
+ case j_op:
+@@ -843,8 +844,9 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
+ return ret;
+
+ sigill_dsp:
+- printk("%s: DSP branch but not DSP ASE - sending SIGBUS.\n", current->comm);
+- force_sig(SIGBUS, current);
++ pr_info("%s: DSP branch but not DSP ASE - sending SIGILL.\n",
++ current->comm);
++ force_sig(SIGILL, current);
+ return -EFAULT;
+ sigill_r6:
+ pr_info("%s: R2 branch but r2-to-r6 emulator is not preset - sending SIGILL.\n",
+diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
+index 298b2b773d12..f1fab6ff53e6 100644
+--- a/arch/mips/kernel/proc.c
++++ b/arch/mips/kernel/proc.c
+@@ -83,7 +83,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
+ }
+
+ seq_printf(m, "isa\t\t\t:");
+- if (cpu_has_mips_r1)
++ if (cpu_has_mips_1)
+ seq_printf(m, " mips1");
+ if (cpu_has_mips_2)
+ seq_printf(m, "%s", " mips2");
+diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
+index f7968b5149b0..5c3aa41a162f 100644
+--- a/arch/mips/kernel/ptrace.c
++++ b/arch/mips/kernel/ptrace.c
+@@ -838,7 +838,7 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
+ audit_syscall_exit(regs);
+
+ if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
+- trace_sys_exit(regs, regs->regs[2]);
++ trace_sys_exit(regs, regs_return_value(regs));
+
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ tracehook_report_syscall_exit(regs, 0);
+diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
+index 6e8de80bb446..d516765ce320 100644
+--- a/arch/mips/kernel/scall32-o32.S
++++ b/arch/mips/kernel/scall32-o32.S
+@@ -362,7 +362,7 @@ EXPORT(sys_call_table)
+ PTR sys_writev
+ PTR sys_cacheflush
+ PTR sys_cachectl
+- PTR sys_sysmips
++ PTR __sys_sysmips
+ PTR sys_ni_syscall /* 4150 */
+ PTR sys_getsid
+ PTR sys_fdatasync
+diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
+index a6f6b762c47a..a60edb497da3 100644
+--- a/arch/mips/kernel/scall64-64.S
++++ b/arch/mips/kernel/scall64-64.S
+@@ -318,7 +318,7 @@ EXPORT(sys_call_table)
+ PTR sys_sched_getaffinity
+ PTR sys_cacheflush
+ PTR sys_cachectl
+- PTR sys_sysmips
++ PTR __sys_sysmips
+ PTR sys_io_setup /* 5200 */
+ PTR sys_io_destroy
+ PTR sys_io_getevents
+diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
+index 97fa4c7b9a5e..5de53e4b9607 100644
+--- a/arch/mips/kernel/scall64-n32.S
++++ b/arch/mips/kernel/scall64-n32.S
+@@ -307,7 +307,7 @@ EXPORT(sysn32_call_table)
+ PTR compat_sys_sched_getaffinity
+ PTR sys_cacheflush
+ PTR sys_cachectl
+- PTR sys_sysmips
++ PTR __sys_sysmips
+ PTR compat_sys_io_setup /* 6200 */
+ PTR sys_io_destroy
+ PTR compat_sys_io_getevents
+diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
+index 80e39776e377..185092b9ecc1 100644
+--- a/arch/mips/kernel/scall64-o32.S
++++ b/arch/mips/kernel/scall64-o32.S
+@@ -359,7 +359,7 @@ EXPORT(sys32_call_table)
+ PTR compat_sys_writev
+ PTR sys_cacheflush
+ PTR sys_cachectl
+- PTR sys_sysmips
++ PTR __sys_sysmips
+ PTR sys_ni_syscall /* 4150 */
+ PTR sys_getsid
+ PTR sys_fdatasync
+diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
+index 53a7ef9a8f32..4234b2d726c5 100644
+--- a/arch/mips/kernel/syscall.c
++++ b/arch/mips/kernel/syscall.c
+@@ -28,6 +28,7 @@
+ #include <linux/elf.h>
+
+ #include <asm/asm.h>
++#include <asm/asm-eva.h>
+ #include <asm/branch.h>
+ #include <asm/cachectl.h>
+ #include <asm/cacheflush.h>
+@@ -138,10 +139,12 @@ static inline int mips_atomic_set(unsigned long addr, unsigned long new)
+ __asm__ __volatile__ (
+ " .set "MIPS_ISA_ARCH_LEVEL" \n"
+ " li %[err], 0 \n"
+- "1: ll %[old], (%[addr]) \n"
++ "1: \n"
++ user_ll("%[old]", "(%[addr])")
+ " move %[tmp], %[new] \n"
+- "2: sc %[tmp], (%[addr]) \n"
+- " bnez %[tmp], 4f \n"
++ "2: \n"
++ user_sc("%[tmp]", "(%[addr])")
++ " beqz %[tmp], 4f \n"
+ "3: \n"
+ " .insn \n"
+ " .subsection 2 \n"
+@@ -199,6 +202,12 @@ static inline int mips_atomic_set(unsigned long addr, unsigned long new)
+ unreachable();
+ }
+
++/*
++ * mips_atomic_set() normally returns directly via syscall_exit potentially
++ * clobbering static registers, so be sure to preserve them.
++ */
++save_static_function(sys_sysmips);
++
+ SYSCALL_DEFINE3(sysmips, long, cmd, long, arg1, long, arg2)
+ {
+ switch (cmd) {
+diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
+index 81f645973eb3..62ad117675b3 100644
+--- a/arch/mips/math-emu/cp1emu.c
++++ b/arch/mips/math-emu/cp1emu.c
+@@ -2140,6 +2140,35 @@ dcopuop:
+ return 0;
+ }
+
++/*
++ * Emulate FPU instructions.
++ *
++ * If we use FPU hardware, then we have been typically called to handle
++ * an unimplemented operation, such as where an operand is a NaN or
++ * denormalized. In that case exit the emulation loop after a single
++ * iteration so as to let hardware execute any subsequent instructions.
++ *
++ * If we have no FPU hardware or it has been disabled, then continue
++ * emulating floating-point instructions until one of these conditions
++ * has occurred:
++ *
++ * - a non-FPU instruction has been encountered,
++ *
++ * - an attempt to emulate has ended with a signal,
++ *
++ * - the ISA mode has been switched.
++ *
++ * We need to terminate the emulation loop if we got switched to the
++ * MIPS16 mode, whether supported or not, so that we do not attempt
++ * to emulate a MIPS16 instruction as a regular MIPS FPU instruction.
++ * Similarly if we got switched to the microMIPS mode and only the
++ * regular MIPS mode is supported, so that we do not attempt to emulate
++ * a microMIPS instruction as a regular MIPS FPU instruction. Or if
++ * we got switched to the regular MIPS mode and only the microMIPS mode
++ * is supported, so that we do not attempt to emulate a regular MIPS
++ * instruction that should cause an Address Error exception instead.
++ * For simplicity we always terminate upon an ISA mode switch.
++ */
+ int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
+ int has_fpu, void *__user *fault_addr)
+ {
+@@ -2225,6 +2254,15 @@ int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
+ break;
+ if (sig)
+ break;
++ /*
++ * We have to check for the ISA bit explicitly here,
++ * because `get_isa16_mode' may return 0 if support
++ * for code compression has been globally disabled,
++ * or otherwise we may produce the wrong signal or
++ * even proceed successfully where we must not.
++ */
++ if ((xcp->cp0_epc ^ prevepc) & 0x1)
++ break;
+
+ cond_resched();
+ } while (xcp->cp0_epc > prevepc);
+diff --git a/arch/openrisc/kernel/vmlinux.lds.S b/arch/openrisc/kernel/vmlinux.lds.S
+index 2d69a853b742..3a08b55609b6 100644
+--- a/arch/openrisc/kernel/vmlinux.lds.S
++++ b/arch/openrisc/kernel/vmlinux.lds.S
+@@ -38,6 +38,8 @@ SECTIONS
+ /* Read-only sections, merged into text segment: */
+ . = LOAD_BASE ;
+
++ _text = .;
++
+ /* _s_kernel_ro must be page aligned */
+ . = ALIGN(PAGE_SIZE);
+ _s_kernel_ro = .;
+diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
+index 512d2782b043..0d6670056cd2 100644
+--- a/arch/powerpc/include/asm/atomic.h
++++ b/arch/powerpc/include/asm/atomic.h
+@@ -453,7 +453,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
+ * Atomically increments @v by 1, so long as @v is non-zero.
+ * Returns non-zero if @v was non-zero, and zero otherwise.
+ */
+-static __inline__ long atomic64_inc_not_zero(atomic64_t *v)
++static __inline__ int atomic64_inc_not_zero(atomic64_t *v)
+ {
+ long t1, t2;
+
+@@ -472,7 +472,7 @@ static __inline__ long atomic64_inc_not_zero(atomic64_t *v)
+ : "r" (&v->counter)
+ : "cc", "xer", "memory");
+
+- return t1;
++ return t1 != 0;
+ }
+
+ #endif /* __powerpc64__ */
+diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
+index a4bf6e0eb813..e97e58e28668 100644
+--- a/arch/powerpc/include/asm/reg.h
++++ b/arch/powerpc/include/asm/reg.h
+@@ -1237,7 +1237,7 @@ static inline unsigned long mfvtb (void)
+ " .llong 0\n" \
+ ".previous" \
+ : "=r" (rval) \
+- : "i" (CPU_FTR_CELL_TB_BUG), "i" (SPRN_TBRL)); \
++ : "i" (CPU_FTR_CELL_TB_BUG), "i" (SPRN_TBRL) : "cr0"); \
+ rval;})
+ #else
+ #define mftb() ({unsigned long rval; \
+diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
+index c1e10ffadd17..8e7a6c8efd27 100644
+--- a/arch/powerpc/kvm/book3s_hv.c
++++ b/arch/powerpc/kvm/book3s_hv.c
+@@ -2232,6 +2232,10 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
+ {
+ int r;
+ int srcu_idx;
++ unsigned long ebb_regs[3] = {}; /* shut up GCC */
++ unsigned long user_tar = 0;
++ unsigned long proc_fscr = 0;
++ unsigned int user_vrsave;
+
+ if (!vcpu->arch.sane) {
+ run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+@@ -2281,6 +2285,17 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
+ flush_fp_to_thread(current);
+ flush_altivec_to_thread(current);
+ flush_vsx_to_thread(current);
++
++ /* Save userspace EBB and other register values */
++ if (cpu_has_feature(CPU_FTR_ARCH_207S)) {
++ ebb_regs[0] = mfspr(SPRN_EBBHR);
++ ebb_regs[1] = mfspr(SPRN_EBBRR);
++ ebb_regs[2] = mfspr(SPRN_BESCR);
++ user_tar = mfspr(SPRN_TAR);
++ proc_fscr = mfspr(SPRN_FSCR);
++ }
++ user_vrsave = mfspr(SPRN_VRSAVE);
++
+ vcpu->arch.wqp = &vcpu->arch.vcore->wq;
+ vcpu->arch.pgdir = current->mm->pgd;
+ vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST;
+@@ -2302,6 +2317,16 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
+ }
+ } while (is_kvmppc_resume_guest(r));
+
++ /* Restore userspace EBB and other register values */
++ if (cpu_has_feature(CPU_FTR_ARCH_207S)) {
++ mtspr(SPRN_EBBHR, ebb_regs[0]);
++ mtspr(SPRN_EBBRR, ebb_regs[1]);
++ mtspr(SPRN_BESCR, ebb_regs[2]);
++ mtspr(SPRN_TAR, user_tar);
++ mtspr(SPRN_FSCR, proc_fscr);
++ }
++ mtspr(SPRN_VRSAVE, user_vrsave);
++
+ out:
+ vcpu->arch.state = KVMPPC_VCPU_NOTREADY;
+ atomic_dec(&vcpu->kvm->arch.vcpus_running);
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index 70eaf547703e..a3018f109cd3 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -36,6 +36,13 @@
+ #define NAPPING_CEDE 1
+ #define NAPPING_NOVCPU 2
+
++/* Stack frame offsets for kvmppc_hv_entry */
++#define SFS 112
++#define STACK_SLOT_TRAP (SFS-4)
++#define STACK_SLOT_CIABR (SFS-16)
++#define STACK_SLOT_DAWR (SFS-24)
++#define STACK_SLOT_DAWRX (SFS-32)
++
+ /*
+ * Call kvmppc_hv_entry in real mode.
+ * Must be called with interrupts hard-disabled.
+@@ -265,10 +272,10 @@ kvm_novcpu_exit:
+ bl kvmhv_accumulate_time
+ #endif
+ 13: mr r3, r12
+- stw r12, 112-4(r1)
++ stw r12, STACK_SLOT_TRAP(r1)
+ bl kvmhv_commence_exit
+ nop
+- lwz r12, 112-4(r1)
++ lwz r12, STACK_SLOT_TRAP(r1)
+ b kvmhv_switch_to_host
+
+ /*
+@@ -404,7 +411,7 @@ kvmppc_hv_entry:
+ */
+ mflr r0
+ std r0, PPC_LR_STKOFF(r1)
+- stdu r1, -112(r1)
++ stdu r1, -SFS(r1)
+
+ /* Save R1 in the PACA */
+ std r1, HSTATE_HOST_R1(r13)
+@@ -558,6 +565,16 @@ kvmppc_got_guest:
+ mtspr SPRN_PURR,r7
+ mtspr SPRN_SPURR,r8
+
++ /* Save host values of some registers */
++BEGIN_FTR_SECTION
++ mfspr r5, SPRN_CIABR
++ mfspr r6, SPRN_DAWR
++ mfspr r7, SPRN_DAWRX
++ std r5, STACK_SLOT_CIABR(r1)
++ std r6, STACK_SLOT_DAWR(r1)
++ std r7, STACK_SLOT_DAWRX(r1)
++END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
++
+ BEGIN_FTR_SECTION
+ /* Set partition DABR */
+ /* Do this before re-enabling PMU to avoid P7 DABR corruption bug */
+@@ -1169,8 +1186,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
+ */
+ li r0, 0
+ mtspr SPRN_IAMR, r0
+- mtspr SPRN_CIABR, r0
+- mtspr SPRN_DAWRX, r0
++ mtspr SPRN_PSPB, r0
+ mtspr SPRN_TCSCR, r0
+ mtspr SPRN_WORT, r0
+ /* Set MMCRS to 1<<31 to freeze and disable the SPMC counters */
+@@ -1186,6 +1202,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
+ std r6,VCPU_UAMOR(r9)
+ li r6,0
+ mtspr SPRN_AMR,r6
++ mtspr SPRN_UAMOR, r6
+
+ /* Switch DSCR back to host value */
+ mfspr r8, SPRN_DSCR
+@@ -1327,6 +1344,16 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
+ slbia
+ ptesync
+
++ /* Restore host values of some registers */
++BEGIN_FTR_SECTION
++ ld r5, STACK_SLOT_CIABR(r1)
++ ld r6, STACK_SLOT_DAWR(r1)
++ ld r7, STACK_SLOT_DAWRX(r1)
++ mtspr SPRN_CIABR, r5
++ mtspr SPRN_DAWR, r6
++ mtspr SPRN_DAWRX, r7
++END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
++
+ /*
+ * POWER7/POWER8 guest -> host partition switch code.
+ * We don't have to lock against tlbies but we do
+@@ -1431,8 +1458,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
+ li r0, KVM_GUEST_MODE_NONE
+ stb r0, HSTATE_IN_GUEST(r13)
+
+- ld r0, 112+PPC_LR_STKOFF(r1)
+- addi r1, r1, 112
++ ld r0, SFS+PPC_LR_STKOFF(r1)
++ addi r1, r1, SFS
+ mtlr r0
+ blr
+
+diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
+index 4014881e9843..e37162d356d8 100644
+--- a/arch/powerpc/lib/sstep.c
++++ b/arch/powerpc/lib/sstep.c
+@@ -687,8 +687,10 @@ int __kprobes analyse_instr(struct instruction_op *op, struct pt_regs *regs,
+ case 19:
+ switch ((instr >> 1) & 0x3ff) {
+ case 0: /* mcrf */
+- rd = (instr >> 21) & 0x1c;
+- ra = (instr >> 16) & 0x1c;
++ rd = 7 - ((instr >> 23) & 0x7);
++ ra = 7 - ((instr >> 18) & 0x7);
++ rd *= 4;
++ ra *= 4;
+ val = (regs->ccr >> ra) & 0xf;
+ regs->ccr = (regs->ccr & ~(0xfUL << rd)) | (val << rd);
+ goto instr_done;
+@@ -967,6 +969,19 @@ int __kprobes analyse_instr(struct instruction_op *op, struct pt_regs *regs,
+ #endif
+
+ case 19: /* mfcr */
++ if ((instr >> 20) & 1) {
++ imm = 0xf0000000UL;
++ for (sh = 0; sh < 8; ++sh) {
++ if (instr & (0x80000 >> sh)) {
++ regs->gpr[rd] = regs->ccr & imm;
++ break;
++ }
++ imm >>= 4;
++ }
++
++ goto instr_done;
++ }
++
+ regs->gpr[rd] = regs->ccr;
+ regs->gpr[rd] &= 0xffffffffUL;
+ goto instr_done;
+diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
+index 0f319521e002..14392b4e4693 100644
+--- a/arch/powerpc/platforms/pseries/reconfig.c
++++ b/arch/powerpc/platforms/pseries/reconfig.c
+@@ -112,7 +112,6 @@ static int pSeries_reconfig_remove_node(struct device_node *np)
+
+ of_detach_node(np);
+ of_node_put(parent);
+- of_node_put(np); /* Must decrement the refcount */
+ return 0;
+ }
+
+diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
+index 6ba0bf928909..6bc941be6921 100644
+--- a/arch/s390/include/asm/syscall.h
++++ b/arch/s390/include/asm/syscall.h
+@@ -64,6 +64,12 @@ static inline void syscall_get_arguments(struct task_struct *task,
+ {
+ unsigned long mask = -1UL;
+
++ /*
++ * No arguments for this syscall, there's nothing to do.
++ */
++ if (!n)
++ return;
++
+ BUG_ON(i + n > 6);
+ #ifdef CONFIG_COMPAT
+ if (test_tsk_thread_flag(task, TIF_31BIT))
+diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
+index dc2d7aa56440..a3b51d30e8d8 100644
+--- a/arch/s390/net/bpf_jit_comp.c
++++ b/arch/s390/net/bpf_jit_comp.c
+@@ -1139,7 +1139,8 @@ static int bpf_jit_prog(struct bpf_jit *jit, struct bpf_prog *fp)
+ insn_count = bpf_jit_insn(jit, fp, i);
+ if (insn_count < 0)
+ return -1;
+- jit->addrs[i + 1] = jit->prg; /* Next instruction address */
++ /* Next instruction address */
++ jit->addrs[i + insn_count] = jit->prg;
+ }
+ bpf_jit_epilogue(jit);
+
+diff --git a/arch/sparc/include/asm/mmu_context_64.h b/arch/sparc/include/asm/mmu_context_64.h
+index 349dd23e2876..0cdeb2b483a0 100644
+--- a/arch/sparc/include/asm/mmu_context_64.h
++++ b/arch/sparc/include/asm/mmu_context_64.h
+@@ -25,9 +25,11 @@ void destroy_context(struct mm_struct *mm);
+ void __tsb_context_switch(unsigned long pgd_pa,
+ struct tsb_config *tsb_base,
+ struct tsb_config *tsb_huge,
+- unsigned long tsb_descr_pa);
++ unsigned long tsb_descr_pa,
++ unsigned long secondary_ctx);
+
+-static inline void tsb_context_switch(struct mm_struct *mm)
++static inline void tsb_context_switch_ctx(struct mm_struct *mm,
++ unsigned long ctx)
+ {
+ __tsb_context_switch(__pa(mm->pgd),
+ &mm->context.tsb_block[0],
+@@ -38,9 +40,12 @@ static inline void tsb_context_switch(struct mm_struct *mm)
+ #else
+ NULL
+ #endif
+- , __pa(&mm->context.tsb_descr[0]));
++ , __pa(&mm->context.tsb_descr[0]),
++ ctx);
+ }
+
++#define tsb_context_switch(X) tsb_context_switch_ctx(X, 0)
++
+ void tsb_grow(struct mm_struct *mm,
+ unsigned long tsb_index,
+ unsigned long mm_rss);
+@@ -110,8 +115,7 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str
+ * cpu0 to update it's TSB because at that point the cpu_vm_mask
+ * only had cpu1 set in it.
+ */
+- load_secondary_context(mm);
+- tsb_context_switch(mm);
++ tsb_context_switch_ctx(mm, CTX_HWBITS(mm->context));
+
+ /* Any time a processor runs a context on an address space
+ * for the first time, we must flush that context out of the
+diff --git a/arch/sparc/include/asm/trap_block.h b/arch/sparc/include/asm/trap_block.h
+index ec9c04de3664..ff05992dae7a 100644
+--- a/arch/sparc/include/asm/trap_block.h
++++ b/arch/sparc/include/asm/trap_block.h
+@@ -54,6 +54,7 @@ extern struct trap_per_cpu trap_block[NR_CPUS];
+ void init_cur_cpu_trap(struct thread_info *);
+ void setup_tba(void);
+ extern int ncpus_probed;
++extern u64 cpu_mondo_counter[NR_CPUS];
+
+ unsigned long real_hard_smp_processor_id(void);
+
+diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
+index 95a9fa0d2195..4511caa3b7e9 100644
+--- a/arch/sparc/kernel/smp_64.c
++++ b/arch/sparc/kernel/smp_64.c
+@@ -617,22 +617,48 @@ retry:
+ }
+ }
+
+-/* Multi-cpu list version. */
++#define CPU_MONDO_COUNTER(cpuid) (cpu_mondo_counter[cpuid])
++#define MONDO_USEC_WAIT_MIN 2
++#define MONDO_USEC_WAIT_MAX 100
++#define MONDO_RETRY_LIMIT 500000
++
++/* Multi-cpu list version.
++ *
++ * Deliver xcalls to 'cnt' number of cpus in 'cpu_list'.
++ * Sometimes not all cpus receive the mondo, requiring us to re-send
++ * the mondo until all cpus have received, or cpus are truly stuck
++ * unable to receive mondo, and we timeout.
++ * Occasionally a target cpu strand is borrowed briefly by hypervisor to
++ * perform guest service, such as PCIe error handling. Consider the
++ * service time, 1 second overall wait is reasonable for 1 cpu.
++ * Here two in-between mondo check wait time are defined: 2 usec for
++ * single cpu quick turn around and up to 100usec for large cpu count.
++ * Deliver mondo to large number of cpus could take longer, we adjusts
++ * the retry count as long as target cpus are making forward progress.
++ */
+ static void hypervisor_xcall_deliver(struct trap_per_cpu *tb, int cnt)
+ {
+- int retries, this_cpu, prev_sent, i, saw_cpu_error;
++ int this_cpu, tot_cpus, prev_sent, i, rem;
++ int usec_wait, retries, tot_retries;
++ u16 first_cpu = 0xffff;
++ unsigned long xc_rcvd = 0;
+ unsigned long status;
++ int ecpuerror_id = 0;
++ int enocpu_id = 0;
+ u16 *cpu_list;
++ u16 cpu;
+
+ this_cpu = smp_processor_id();
+-
+ cpu_list = __va(tb->cpu_list_pa);
+-
+- saw_cpu_error = 0;
+- retries = 0;
++ usec_wait = cnt * MONDO_USEC_WAIT_MIN;
++ if (usec_wait > MONDO_USEC_WAIT_MAX)
++ usec_wait = MONDO_USEC_WAIT_MAX;
++ retries = tot_retries = 0;
++ tot_cpus = cnt;
+ prev_sent = 0;
++
+ do {
+- int forward_progress, n_sent;
++ int n_sent, mondo_delivered, target_cpu_busy;
+
+ status = sun4v_cpu_mondo_send(cnt,
+ tb->cpu_list_pa,
+@@ -640,94 +666,113 @@ static void hypervisor_xcall_deliver(struct trap_per_cpu *tb, int cnt)
+
+ /* HV_EOK means all cpus received the xcall, we're done. */
+ if (likely(status == HV_EOK))
+- break;
++ goto xcall_done;
++
++ /* If not these non-fatal errors, panic */
++ if (unlikely((status != HV_EWOULDBLOCK) &&
++ (status != HV_ECPUERROR) &&
++ (status != HV_ENOCPU)))
++ goto fatal_errors;
+
+ /* First, see if we made any forward progress.
++ *
++ * Go through the cpu_list, count the target cpus that have
++ * received our mondo (n_sent), and those that did not (rem).
++ * Re-pack cpu_list with the cpus remain to be retried in the
++ * front - this simplifies tracking the truly stalled cpus.
+ *
+ * The hypervisor indicates successful sends by setting
+ * cpu list entries to the value 0xffff.
++ *
++ * EWOULDBLOCK means some target cpus did not receive the
++ * mondo and retry usually helps.
++ *
++ * ECPUERROR means at least one target cpu is in error state,
++ * it's usually safe to skip the faulty cpu and retry.
++ *
++ * ENOCPU means one of the target cpu doesn't belong to the
++ * domain, perhaps offlined which is unexpected, but not
++ * fatal and it's okay to skip the offlined cpu.
+ */
++ rem = 0;
+ n_sent = 0;
+ for (i = 0; i < cnt; i++) {
+- if (likely(cpu_list[i] == 0xffff))
++ cpu = cpu_list[i];
++ if (likely(cpu == 0xffff)) {
+ n_sent++;
++ } else if ((status == HV_ECPUERROR) &&
++ (sun4v_cpu_state(cpu) == HV_CPU_STATE_ERROR)) {
++ ecpuerror_id = cpu + 1;
++ } else if (status == HV_ENOCPU && !cpu_online(cpu)) {
++ enocpu_id = cpu + 1;
++ } else {
++ cpu_list[rem++] = cpu;
++ }
+ }
+
+- forward_progress = 0;
+- if (n_sent > prev_sent)
+- forward_progress = 1;
++ /* No cpu remained, we're done. */
++ if (rem == 0)
++ break;
+
+- prev_sent = n_sent;
++ /* Otherwise, update the cpu count for retry. */
++ cnt = rem;
+
+- /* If we get a HV_ECPUERROR, then one or more of the cpus
+- * in the list are in error state. Use the cpu_state()
+- * hypervisor call to find out which cpus are in error state.
++ /* Record the overall number of mondos received by the
++ * first of the remaining cpus.
+ */
+- if (unlikely(status == HV_ECPUERROR)) {
+- for (i = 0; i < cnt; i++) {
+- long err;
+- u16 cpu;
++ if (first_cpu != cpu_list[0]) {
++ first_cpu = cpu_list[0];
++ xc_rcvd = CPU_MONDO_COUNTER(first_cpu);
++ }
+
+- cpu = cpu_list[i];
+- if (cpu == 0xffff)
+- continue;
++ /* Was any mondo delivered successfully? */
++ mondo_delivered = (n_sent > prev_sent);
++ prev_sent = n_sent;
+
+- err = sun4v_cpu_state(cpu);
+- if (err == HV_CPU_STATE_ERROR) {
+- saw_cpu_error = (cpu + 1);
+- cpu_list[i] = 0xffff;
+- }
+- }
+- } else if (unlikely(status != HV_EWOULDBLOCK))
+- goto fatal_mondo_error;
++ /* or, was any target cpu busy processing other mondos? */
++ target_cpu_busy = (xc_rcvd < CPU_MONDO_COUNTER(first_cpu));
++ xc_rcvd = CPU_MONDO_COUNTER(first_cpu);
+
+- /* Don't bother rewriting the CPU list, just leave the
+- * 0xffff and non-0xffff entries in there and the
+- * hypervisor will do the right thing.
+- *
+- * Only advance timeout state if we didn't make any
+- * forward progress.
++ /* Retry count is for no progress. If we're making progress,
++ * reset the retry count.
+ */
+- if (unlikely(!forward_progress)) {
+- if (unlikely(++retries > 10000))
+- goto fatal_mondo_timeout;
+-
+- /* Delay a little bit to let other cpus catch up
+- * on their cpu mondo queue work.
+- */
+- udelay(2 * cnt);
++ if (likely(mondo_delivered || target_cpu_busy)) {
++ tot_retries += retries;
++ retries = 0;
++ } else if (unlikely(retries > MONDO_RETRY_LIMIT)) {
++ goto fatal_mondo_timeout;
+ }
+- } while (1);
+
+- if (unlikely(saw_cpu_error))
+- goto fatal_mondo_cpu_error;
++ /* Delay a little bit to let other cpus catch up on
++ * their cpu mondo queue work.
++ */
++ if (!mondo_delivered)
++ udelay(usec_wait);
+
+- return;
++ retries++;
++ } while (1);
+
+-fatal_mondo_cpu_error:
+- printk(KERN_CRIT "CPU[%d]: SUN4V mondo cpu error, some target cpus "
+- "(including %d) were in error state\n",
+- this_cpu, saw_cpu_error - 1);
++xcall_done:
++ if (unlikely(ecpuerror_id > 0)) {
++ pr_crit("CPU[%d]: SUN4V mondo cpu error, target cpu(%d) was in error state\n",
++ this_cpu, ecpuerror_id - 1);
++ } else if (unlikely(enocpu_id > 0)) {
++ pr_crit("CPU[%d]: SUN4V mondo cpu error, target cpu(%d) does not belong to the domain\n",
++ this_cpu, enocpu_id - 1);
++ }
+ return;
+
++fatal_errors:
++ /* fatal errors include bad alignment, etc */
++ pr_crit("CPU[%d]: Args were cnt(%d) cpulist_pa(%lx) mondo_block_pa(%lx)\n",
++ this_cpu, tot_cpus, tb->cpu_list_pa, tb->cpu_mondo_block_pa);
++ panic("Unexpected SUN4V mondo error %lu\n", status);
++
+ fatal_mondo_timeout:
+- printk(KERN_CRIT "CPU[%d]: SUN4V mondo timeout, no forward "
+- " progress after %d retries.\n",
+- this_cpu, retries);
+- goto dump_cpu_list_and_out;
+-
+-fatal_mondo_error:
+- printk(KERN_CRIT "CPU[%d]: Unexpected SUN4V mondo error %lu\n",
+- this_cpu, status);
+- printk(KERN_CRIT "CPU[%d]: Args were cnt(%d) cpulist_pa(%lx) "
+- "mondo_block_pa(%lx)\n",
+- this_cpu, cnt, tb->cpu_list_pa, tb->cpu_mondo_block_pa);
+-
+-dump_cpu_list_and_out:
+- printk(KERN_CRIT "CPU[%d]: CPU list [ ", this_cpu);
+- for (i = 0; i < cnt; i++)
+- printk("%u ", cpu_list[i]);
+- printk("]\n");
++ /* some cpus being non-responsive to the cpu mondo */
++ pr_crit("CPU[%d]: SUN4V mondo timeout, cpu(%d) made no forward progress after %d retries. Total target cpus(%d).\n",
++ this_cpu, first_cpu, (tot_retries + retries), tot_cpus);
++ panic("SUN4V mondo timeout panic\n");
+ }
+
+ static void (*xcall_deliver_impl)(struct trap_per_cpu *, int);
+diff --git a/arch/sparc/kernel/sun4v_ivec.S b/arch/sparc/kernel/sun4v_ivec.S
+index 559bc5e9c199..34631995859a 100644
+--- a/arch/sparc/kernel/sun4v_ivec.S
++++ b/arch/sparc/kernel/sun4v_ivec.S
+@@ -26,6 +26,21 @@ sun4v_cpu_mondo:
+ ldxa [%g0] ASI_SCRATCHPAD, %g4
+ sub %g4, TRAP_PER_CPU_FAULT_INFO, %g4
+
++ /* Get smp_processor_id() into %g3 */
++ sethi %hi(trap_block), %g5
++ or %g5, %lo(trap_block), %g5
++ sub %g4, %g5, %g3
++ srlx %g3, TRAP_BLOCK_SZ_SHIFT, %g3
++
++ /* Increment cpu_mondo_counter[smp_processor_id()] */
++ sethi %hi(cpu_mondo_counter), %g5
++ or %g5, %lo(cpu_mondo_counter), %g5
++ sllx %g3, 3, %g3
++ add %g5, %g3, %g5
++ ldx [%g5], %g3
++ add %g3, 1, %g3
++ stx %g3, [%g5]
++
+ /* Get CPU mondo queue base phys address into %g7. */
+ ldx [%g4 + TRAP_PER_CPU_CPU_MONDO_PA], %g7
+
+diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
+index cc97a43268ee..d883c5951e8b 100644
+--- a/arch/sparc/kernel/traps_64.c
++++ b/arch/sparc/kernel/traps_64.c
+@@ -2659,6 +2659,7 @@ void do_getpsr(struct pt_regs *regs)
+ }
+ }
+
++u64 cpu_mondo_counter[NR_CPUS] = {0};
+ struct trap_per_cpu trap_block[NR_CPUS];
+ EXPORT_SYMBOL(trap_block);
+
+diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S
+index 8e920d152565..12fe20c9042c 100644
+--- a/arch/sparc/kernel/tsb.S
++++ b/arch/sparc/kernel/tsb.S
+@@ -367,6 +367,7 @@ tsb_flush:
+ * %o1: TSB base config pointer
+ * %o2: TSB huge config pointer, or NULL if none
+ * %o3: Hypervisor TSB descriptor physical address
++ * %o4: Secondary context to load, if non-zero
+ *
+ * We have to run this whole thing with interrupts
+ * disabled so that the current cpu doesn't change
+@@ -379,6 +380,17 @@ __tsb_context_switch:
+ rdpr %pstate, %g1
+ wrpr %g1, PSTATE_IE, %pstate
+
++ brz,pn %o4, 1f
++ mov SECONDARY_CONTEXT, %o5
++
++661: stxa %o4, [%o5] ASI_DMMU
++ .section .sun4v_1insn_patch, "ax"
++ .word 661b
++ stxa %o4, [%o5] ASI_MMU
++ .previous
++ flush %g6
++
++1:
+ TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
+
+ stx %o0, [%g2 + TRAP_PER_CPU_PGD_PADDR]
+diff --git a/arch/sparc/power/hibernate.c b/arch/sparc/power/hibernate.c
+index 17bd2e167e07..df707a8ad311 100644
+--- a/arch/sparc/power/hibernate.c
++++ b/arch/sparc/power/hibernate.c
+@@ -35,6 +35,5 @@ void restore_processor_state(void)
+ {
+ struct mm_struct *mm = current->active_mm;
+
+- load_secondary_context(mm);
+- tsb_context_switch(mm);
++ tsb_context_switch_ctx(mm, CTX_HWBITS(mm->context));
+ }
+diff --git a/arch/x86/boot/string.c b/arch/x86/boot/string.c
+index 318b8465d302..06ceddb3a22e 100644
+--- a/arch/x86/boot/string.c
++++ b/arch/x86/boot/string.c
+@@ -14,6 +14,7 @@
+
+ #include <linux/types.h>
+ #include "ctype.h"
++#include "string.h"
+
+ int memcmp(const void *s1, const void *s2, size_t len)
+ {
+diff --git a/arch/x86/boot/string.h b/arch/x86/boot/string.h
+index 725e820602b1..113588ddb43f 100644
+--- a/arch/x86/boot/string.h
++++ b/arch/x86/boot/string.h
+@@ -18,4 +18,13 @@ int memcmp(const void *s1, const void *s2, size_t len);
+ #define memset(d,c,l) __builtin_memset(d,c,l)
+ #define memcmp __builtin_memcmp
+
++extern int strcmp(const char *str1, const char *str2);
++extern int strncmp(const char *cs, const char *ct, size_t count);
++extern size_t strlen(const char *s);
++extern char *strstr(const char *s1, const char *s2);
++extern size_t strnlen(const char *s, size_t maxlen);
++extern unsigned int atou(const char *s);
++extern unsigned long long simple_strtoull(const char *cp, char **endp,
++ unsigned int base);
++
+ #endif /* BOOT_STRING_H */
+diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
+index ca08a27b90b3..4ad5a91aea79 100644
+--- a/arch/x86/include/asm/xen/hypercall.h
++++ b/arch/x86/include/asm/xen/hypercall.h
+@@ -43,6 +43,7 @@
+
+ #include <asm/page.h>
+ #include <asm/pgtable.h>
++#include <asm/smap.h>
+
+ #include <xen/interface/xen.h>
+ #include <xen/interface/sched.h>
+@@ -213,10 +214,12 @@ privcmd_call(unsigned call,
+ __HYPERCALL_DECLS;
+ __HYPERCALL_5ARG(a1, a2, a3, a4, a5);
+
++ stac();
+ asm volatile("call *%[call]"
+ : __HYPERCALL_5PARAM
+ : [call] "a" (&hypercall_page[call])
+ : __HYPERCALL_CLOBBER5);
++ clac();
+
+ return (long)__res;
+ }
+diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
+index 07bea80223f6..60aa02503b48 100644
+--- a/arch/x86/kernel/acpi/boot.c
++++ b/arch/x86/kernel/acpi/boot.c
+@@ -328,6 +328,14 @@ static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
+ int pin;
+ struct mpc_intsrc mp_irq;
+
++ /*
++ * Check bus_irq boundary.
++ */
++ if (bus_irq >= NR_IRQS_LEGACY) {
++ pr_warn("Invalid bus_irq %u for legacy override\n", bus_irq);
++ return;
++ }
++
+ /*
+ * Convert 'gsi' to 'ioapic.pin'.
+ */
+diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c
+index df61c2d0cb56..bd7e7d6c29c5 100644
+--- a/arch/x86/kernel/cpu/mcheck/mce_amd.c
++++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c
+@@ -581,6 +581,9 @@ static int threshold_create_bank(unsigned int cpu, unsigned int bank)
+ const char *name = th_names[bank];
+ int err = 0;
+
++ if (!dev)
++ return -ENODEV;
++
+ if (is_shared_bank(bank)) {
+ nb = node_to_amd_nb(amd_get_nb_id(cpu));
+
+diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
+index 27e63c1770e6..916e84aa5447 100644
+--- a/arch/x86/kernel/kvm.c
++++ b/arch/x86/kernel/kvm.c
+@@ -151,6 +151,8 @@ void kvm_async_pf_task_wait(u32 token)
+ if (hlist_unhashed(&n.link))
+ break;
+
++ rcu_irq_exit();
++
+ if (!n.halted) {
+ local_irq_enable();
+ schedule();
+@@ -159,11 +161,11 @@ void kvm_async_pf_task_wait(u32 token)
+ /*
+ * We cannot reschedule. So halt.
+ */
+- rcu_irq_exit();
+ native_safe_halt();
+ local_irq_disable();
+- rcu_irq_enter();
+ }
++
++ rcu_irq_enter();
+ }
+ if (!n.halted)
+ finish_wait(&n.wq, &wait);
+diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
+index 39c485b0c25c..db89f4b8b966 100644
+--- a/drivers/acpi/glue.c
++++ b/drivers/acpi/glue.c
+@@ -97,7 +97,15 @@ static int find_child_checks(struct acpi_device *adev, bool check_children)
+ if (check_children && list_empty(&adev->children))
+ return -ENODEV;
+
+- return sta_present ? FIND_CHILD_MAX_SCORE : FIND_CHILD_MIN_SCORE;
++ /*
++ * If the device has a _HID (or _CID) returning a valid ACPI/PNP
++ * device ID, it is better to make it look less attractive here, so that
++ * the other device with the same _ADR value (that may not have a valid
++ * device ID) can be matched going forward. [This means a second spec
++ * violation in a row, so whatever we do here is best effort anyway.]
++ */
++ return sta_present && list_empty(&adev->pnp.ids) ?
++ FIND_CHILD_MAX_SCORE : FIND_CHILD_MIN_SCORE;
+ }
+
+ struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
+diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
+index ae7cfcb562dc..4d4cdade9d7e 100644
+--- a/drivers/ata/libata-scsi.c
++++ b/drivers/ata/libata-scsi.c
+@@ -2834,10 +2834,12 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
+ static struct ata_device *ata_find_dev(struct ata_port *ap, int devno)
+ {
+ if (!sata_pmp_attached(ap)) {
+- if (likely(devno < ata_link_max_devices(&ap->link)))
++ if (likely(devno >= 0 &&
++ devno < ata_link_max_devices(&ap->link)))
+ return &ap->link.device[devno];
+ } else {
+- if (likely(devno < ap->nr_pmp_links))
++ if (likely(devno >= 0 &&
++ devno < ap->nr_pmp_links))
+ return &ap->pmp_link[devno].device[0];
+ }
+
+diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
+index 2327613d4539..75e29733af54 100644
+--- a/drivers/base/power/domain.c
++++ b/drivers/base/power/domain.c
+@@ -1440,7 +1440,6 @@ static struct generic_pm_domain_data *genpd_alloc_dev_data(struct device *dev,
+ }
+
+ dev->power.subsys_data->domain_data = &gpd_data->base;
+- dev->pm_domain = &genpd->domain;
+
+ spin_unlock_irq(&dev->power.lock);
+
+@@ -1459,7 +1458,6 @@ static void genpd_free_dev_data(struct device *dev,
+ {
+ spin_lock_irq(&dev->power.lock);
+
+- dev->pm_domain = NULL;
+ dev->power.subsys_data->domain_data = NULL;
+
+ spin_unlock_irq(&dev->power.lock);
+@@ -1500,6 +1498,8 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
+ if (ret)
+ goto out;
+
++ dev->pm_domain = &genpd->domain;
++
+ genpd->device_count++;
+ genpd->max_off_time_changed = true;
+
+@@ -1563,6 +1563,8 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd,
+ if (genpd->detach_dev)
+ genpd->detach_dev(genpd, dev);
+
++ dev->pm_domain = NULL;
++
+ list_del_init(&pdd->list_node);
+
+ genpd_release_lock(genpd);
+@@ -1673,7 +1675,7 @@ int pm_genpd_add_subdomain_names(const char *master_name,
+ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
+ struct generic_pm_domain *subdomain)
+ {
+- struct gpd_link *link;
++ struct gpd_link *l, *link;
+ int ret = -EINVAL;
+
+ if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(subdomain))
+@@ -1682,7 +1684,7 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
+ start:
+ genpd_acquire_lock(genpd);
+
+- list_for_each_entry(link, &genpd->master_links, master_node) {
++ list_for_each_entry_safe(link, l, &genpd->master_links, master_node) {
+ if (link->slave != subdomain)
+ continue;
+
+@@ -2062,10 +2064,10 @@ EXPORT_SYMBOL_GPL(__of_genpd_add_provider);
+ */
+ void of_genpd_del_provider(struct device_node *np)
+ {
+- struct of_genpd_provider *cp;
++ struct of_genpd_provider *cp, *tmp;
+
+ mutex_lock(&of_genpd_mutex);
+- list_for_each_entry(cp, &of_genpd_providers, link) {
++ list_for_each_entry_safe(cp, tmp, &of_genpd_providers, link) {
+ if (cp->node == np) {
+ list_del(&cp->link);
+ of_node_put(cp->node);
+diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
+index 5ea2f0bbbc7c..071c3ea70882 100644
+--- a/drivers/block/virtio_blk.c
++++ b/drivers/block/virtio_blk.c
+@@ -642,11 +642,12 @@ static int virtblk_probe(struct virtio_device *vdev)
+ if (err)
+ goto out_put_disk;
+
+- q = vblk->disk->queue = blk_mq_init_queue(&vblk->tag_set);
++ q = blk_mq_init_queue(&vblk->tag_set);
+ if (IS_ERR(q)) {
+ err = -ENOMEM;
+ goto out_free_tags;
+ }
++ vblk->disk->queue = q;
+
+ q->queuedata = vblk;
+
+diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
+index 3e9ec9523f73..1d8c6cb89c7f 100644
+--- a/drivers/block/xen-blkback/blkback.c
++++ b/drivers/block/xen-blkback/blkback.c
+@@ -588,8 +588,6 @@ int xen_blkif_schedule(void *arg)
+ unsigned long timeout;
+ int ret;
+
+- xen_blkif_get(blkif);
+-
+ while (!kthread_should_stop()) {
+ if (try_to_freeze())
+ continue;
+@@ -643,7 +641,6 @@ purge_gnt_list:
+ print_stats(blkif);
+
+ blkif->xenblkd = NULL;
+- xen_blkif_put(blkif);
+
+ return 0;
+ }
+diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
+index 6ab69ad61ee1..b8c48da3b19f 100644
+--- a/drivers/block/xen-blkback/xenbus.c
++++ b/drivers/block/xen-blkback/xenbus.c
+@@ -256,7 +256,6 @@ static int xen_blkif_disconnect(struct xen_blkif *blkif)
+ if (blkif->xenblkd) {
+ kthread_stop(blkif->xenblkd);
+ wake_up(&blkif->shutdown_wq);
+- blkif->xenblkd = NULL;
+ }
+
+ /* The above kthread_stop() guarantees that at this point we
+diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
+index 4bc508c14900..5da703c65d93 100644
+--- a/drivers/char/ipmi/ipmi_msghandler.c
++++ b/drivers/char/ipmi/ipmi_msghandler.c
+@@ -3871,6 +3871,9 @@ static void smi_recv_tasklet(unsigned long val)
+ * because the lower layer is allowed to hold locks while calling
+ * message delivery.
+ */
++
++ rcu_read_lock();
++
+ if (!run_to_completion)
+ spin_lock_irqsave(&intf->xmit_msgs_lock, flags);
+ if (intf->curr_msg == NULL && !intf->in_shutdown) {
+@@ -3893,6 +3896,8 @@ static void smi_recv_tasklet(unsigned long val)
+ if (newmsg)
+ intf->handlers->sender(intf->send_info, newmsg);
+
++ rcu_read_unlock();
++
+ handle_new_recv_msgs(intf);
+ }
+
+diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
+index 9df92eda8749..9156bbd90b56 100644
+--- a/drivers/char/ipmi/ipmi_ssif.c
++++ b/drivers/char/ipmi/ipmi_ssif.c
+@@ -757,6 +757,11 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result,
+ result, len, data[2]);
+ } else if (data[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2
+ || data[1] != IPMI_GET_MSG_FLAGS_CMD) {
++ /*
++ * Don't abort here, maybe it was a queued
++ * response to a previous command.
++ */
++ ipmi_ssif_unlock_cond(ssif_info, flags);
+ pr_warn(PFX "Invalid response getting flags: %x %x\n",
+ data[0], data[1]);
+ } else {
+diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
+index 37b8be7cba95..f335fcee09af 100644
+--- a/drivers/char/ipmi/ipmi_watchdog.c
++++ b/drivers/char/ipmi/ipmi_watchdog.c
+@@ -1156,10 +1156,11 @@ static int wdog_reboot_handler(struct notifier_block *this,
+ ipmi_watchdog_state = WDOG_TIMEOUT_NONE;
+ ipmi_set_timeout(IPMI_SET_TIMEOUT_NO_HB);
+ } else if (ipmi_watchdog_state != WDOG_TIMEOUT_NONE) {
+- /* Set a long timer to let the reboot happens, but
+- reboot if it hangs, but only if the watchdog
++ /* Set a long timer to let the reboot happen or
++ reset if it hangs, but only if the watchdog
+ timer was already running. */
+- timeout = 120;
++ if (timeout < 120)
++ timeout = 120;
+ pretimeout = 0;
+ ipmi_watchdog_state = WDOG_TIMEOUT_RESET;
+ ipmi_set_timeout(IPMI_SET_TIMEOUT_NO_HB);
+diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
+index ee66fd4673f3..62a6117b57d7 100644
+--- a/drivers/char/tpm/tpm-sysfs.c
++++ b/drivers/char/tpm/tpm-sysfs.c
+@@ -38,6 +38,8 @@ static ssize_t pubek_show(struct device *dev, struct device_attribute *attr,
+
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+
++ memset(&tpm_cmd, 0, sizeof(tpm_cmd));
++
+ tpm_cmd.header.in = tpm_readpubek_header;
+ err = tpm_transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE,
+ "attempting to read the PUBEK");
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index f557695a2409..7724ddb0f776 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -330,6 +330,13 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg,
+ return false;
+ }
+
++ /*
++ * ignore out-of-order messages or messages that are part of a
++ * failed transaction
++ */
++ if (!recv_hdr.somt && !msg->have_somt)
++ return false;
++
+ /* get length contained in this portion */
+ msg->curchunk_len = recv_hdr.msg_len;
+ msg->curchunk_hdrlen = hdrlen;
+@@ -2161,7 +2168,7 @@ out_unlock:
+ }
+ EXPORT_SYMBOL(drm_dp_mst_topology_mgr_resume);
+
+-static void drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
++static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
+ {
+ int len;
+ u8 replyblock[32];
+@@ -2176,12 +2183,12 @@ static void drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
+ replyblock, len);
+ if (ret != len) {
+ DRM_DEBUG_KMS("failed to read DPCD down rep %d %d\n", len, ret);
+- return;
++ return false;
+ }
+ ret = drm_dp_sideband_msg_build(msg, replyblock, len, true);
+ if (!ret) {
+ DRM_DEBUG_KMS("sideband msg build failed %d\n", replyblock[0]);
+- return;
++ return false;
+ }
+ replylen = msg->curchunk_len + msg->curchunk_hdrlen;
+
+@@ -2193,21 +2200,32 @@ static void drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
+ ret = drm_dp_dpcd_read(mgr->aux, basereg + curreply,
+ replyblock, len);
+ if (ret != len) {
+- DRM_DEBUG_KMS("failed to read a chunk\n");
++ DRM_DEBUG_KMS("failed to read a chunk (len %d, ret %d)\n",
++ len, ret);
++ return false;
+ }
++
+ ret = drm_dp_sideband_msg_build(msg, replyblock, len, false);
+- if (ret == false)
++ if (!ret) {
+ DRM_DEBUG_KMS("failed to build sideband msg\n");
++ return false;
++ }
++
+ curreply += len;
+ replylen -= len;
+ }
++ return true;
+ }
+
+ static int drm_dp_mst_handle_down_rep(struct drm_dp_mst_topology_mgr *mgr)
+ {
+ int ret = 0;
+
+- drm_dp_get_one_sb_msg(mgr, false);
++ if (!drm_dp_get_one_sb_msg(mgr, false)) {
++ memset(&mgr->down_rep_recv, 0,
++ sizeof(struct drm_dp_sideband_msg_rx));
++ return 0;
++ }
+
+ if (mgr->down_rep_recv.have_eomt) {
+ struct drm_dp_sideband_msg_tx *txmsg;
+@@ -2263,7 +2281,12 @@ static int drm_dp_mst_handle_down_rep(struct drm_dp_mst_topology_mgr *mgr)
+ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
+ {
+ int ret = 0;
+- drm_dp_get_one_sb_msg(mgr, true);
++
++ if (!drm_dp_get_one_sb_msg(mgr, true)) {
++ memset(&mgr->up_req_recv, 0,
++ sizeof(struct drm_dp_sideband_msg_rx));
++ return 0;
++ }
+
+ if (mgr->up_req_recv.have_eomt) {
+ struct drm_dp_sideband_msg_req_body msg;
+@@ -2315,7 +2338,9 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
+ DRM_DEBUG_KMS("Got RSN: pn: %d avail_pbn %d\n", msg.u.resource_stat.port_number, msg.u.resource_stat.available_pbn);
+ }
+
+- drm_dp_put_mst_branch_device(mstb);
++ if (mstb)
++ drm_dp_put_mst_branch_device(mstb);
++
+ memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
+ }
+ return ret;
+diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+index bbdcab0a56c1..3401df5b44db 100644
+--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
++++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+@@ -193,7 +193,14 @@ int adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
+ void adreno_flush(struct msm_gpu *gpu)
+ {
+ struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+- uint32_t wptr = get_wptr(gpu->rb);
++ uint32_t wptr;
++
++ /*
++ * Mask wptr value that we calculate to fit in the HW range. This is
++ * to account for the possibility that the last command fit exactly into
++ * the ringbuffer and rb->next hasn't wrapped to zero yet
++ */
++ wptr = get_wptr(gpu->rb) & ((gpu->rb->size / 4) - 1);
+
+ /* ensure writes to ringbuffer have hit system memory: */
+ mb();
+diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
+index 4ff8c334e7c8..4a45ae01cc3e 100644
+--- a/drivers/gpu/drm/msm/msm_gem_submit.c
++++ b/drivers/gpu/drm/msm/msm_gem_submit.c
+@@ -90,7 +90,8 @@ static int submit_lookup_objects(struct msm_gem_submit *submit,
+ pagefault_disable();
+ }
+
+- if (submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) {
++ if ((submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) ||
++ !(submit_bo.flags & MSM_SUBMIT_BO_FLAGS)) {
+ DRM_ERROR("invalid flags: %x\n", submit_bo.flags);
+ ret = -EINVAL;
+ goto out_unlock;
+diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c
+index 1f14b908b221..ae317271cf81 100644
+--- a/drivers/gpu/drm/msm/msm_ringbuffer.c
++++ b/drivers/gpu/drm/msm/msm_ringbuffer.c
+@@ -23,7 +23,8 @@ struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int size)
+ struct msm_ringbuffer *ring;
+ int ret;
+
+- size = ALIGN(size, 4); /* size should be dword aligned */
++ if (WARN_ON(!is_power_of_2(size)))
++ return ERR_PTR(-EINVAL);
+
+ ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+ if (!ring) {
+diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
+index d4ac8c837314..8e86cf7da614 100644
+--- a/drivers/gpu/drm/radeon/atombios_encoders.c
++++ b/drivers/gpu/drm/radeon/atombios_encoders.c
+@@ -30,6 +30,7 @@
+ #include "radeon_audio.h"
+ #include "atom.h"
+ #include <linux/backlight.h>
++#include <linux/dmi.h>
+
+ extern int atom_debug;
+
+@@ -2183,9 +2184,17 @@ int radeon_atom_pick_dig_encoder(struct drm_encoder *encoder, int fe_idx)
+ goto assigned;
+ }
+
+- /* on DCE32 and encoder can driver any block so just crtc id */
++ /*
++ * On DCE32 any encoder can drive any block so usually just use crtc id,
++ * but Apple thinks different at least on iMac10,1, so there use linkb,
++ * otherwise the internal eDP panel will stay dark.
++ */
+ if (ASIC_IS_DCE32(rdev)) {
+- enc_idx = radeon_crtc->crtc_id;
++ if (dmi_match(DMI_PRODUCT_NAME, "iMac10,1"))
++ enc_idx = (dig->linkb) ? 1 : 0;
++ else
++ enc_idx = radeon_crtc->crtc_id;
++
+ goto assigned;
+ }
+
+diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+index 7d0b8ef9bea2..7c6f15d284e3 100644
+--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
++++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+@@ -277,26 +277,6 @@ static void rcar_du_crtc_update_planes(struct rcar_du_crtc *rcrtc)
+ * Page Flip
+ */
+
+-void rcar_du_crtc_cancel_page_flip(struct rcar_du_crtc *rcrtc,
+- struct drm_file *file)
+-{
+- struct drm_pending_vblank_event *event;
+- struct drm_device *dev = rcrtc->crtc.dev;
+- unsigned long flags;
+-
+- /* Destroy the pending vertical blanking event associated with the
+- * pending page flip, if any, and disable vertical blanking interrupts.
+- */
+- spin_lock_irqsave(&dev->event_lock, flags);
+- event = rcrtc->event;
+- if (event && event->base.file_priv == file) {
+- rcrtc->event = NULL;
+- event->base.destroy(&event->base);
+- drm_crtc_vblank_put(&rcrtc->crtc);
+- }
+- spin_unlock_irqrestore(&dev->event_lock, flags);
+-}
+-
+ static void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc)
+ {
+ struct drm_pending_vblank_event *event;
+diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
+index 5d9aa9b33769..0d61a813054a 100644
+--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
++++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
+@@ -53,8 +53,6 @@ enum rcar_du_output {
+
+ int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index);
+ void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable);
+-void rcar_du_crtc_cancel_page_flip(struct rcar_du_crtc *rcrtc,
+- struct drm_file *file);
+ void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
+ void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
+
+diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+index da1216a73969..94133c3ffe20 100644
+--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
++++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+@@ -205,15 +205,6 @@ done:
+ return ret;
+ }
+
+-static void rcar_du_preclose(struct drm_device *dev, struct drm_file *file)
+-{
+- struct rcar_du_device *rcdu = dev->dev_private;
+- unsigned int i;
+-
+- for (i = 0; i < rcdu->num_crtcs; ++i)
+- rcar_du_crtc_cancel_page_flip(&rcdu->crtcs[i], file);
+-}
+-
+ static void rcar_du_lastclose(struct drm_device *dev)
+ {
+ struct rcar_du_device *rcdu = dev->dev_private;
+@@ -256,7 +247,6 @@ static struct drm_driver rcar_du_driver = {
+ | DRIVER_ATOMIC,
+ .load = rcar_du_load,
+ .unload = rcar_du_unload,
+- .preclose = rcar_du_preclose,
+ .lastclose = rcar_du_lastclose,
+ .set_busid = drm_platform_set_busid,
+ .get_vblank_counter = drm_vblank_count,
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+index aee1c6ccc52d..6c312b584802 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+@@ -285,7 +285,7 @@ static int vmw_cmd_invalid(struct vmw_private *dev_priv,
+ struct vmw_sw_context *sw_context,
+ SVGA3dCmdHeader *header)
+ {
+- return capable(CAP_SYS_ADMIN) ? : -EINVAL;
++ return -EINVAL;
+ }
+
+ static int vmw_cmd_ok(struct vmw_private *dev_priv,
+diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
+index 07a963039b60..d786b48f5d7b 100644
+--- a/drivers/hid/hid-core.c
++++ b/drivers/hid/hid-core.c
+@@ -2391,6 +2391,7 @@ static const struct hid_device_id hid_ignore_list[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
++ { HID_USB_DEVICE(USB_VENDOR_ID_PETZL, USB_DEVICE_ID_PETZL_HEADLAMP) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
+ #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
+diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
+index 7ce93d927f62..e995058ad264 100644
+--- a/drivers/hid/hid-ids.h
++++ b/drivers/hid/hid-ids.h
+@@ -760,6 +760,9 @@
+ #define USB_VENDOR_ID_PETALYNX 0x18b1
+ #define USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE 0x0037
+
++#define USB_VENDOR_ID_PETZL 0x2122
++#define USB_DEVICE_ID_PETZL_HEADLAMP 0x1234
++
+ #define USB_VENDOR_ID_PHILIPS 0x0471
+ #define USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE 0x0617
+
+diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
+index 56292ae4538d..9bcad9a444f7 100644
+--- a/drivers/iio/adc/vf610_adc.c
++++ b/drivers/iio/adc/vf610_adc.c
+@@ -71,7 +71,7 @@
+ #define VF610_ADC_ADSTS_MASK 0x300
+ #define VF610_ADC_ADLPC_EN 0x80
+ #define VF610_ADC_ADHSC_EN 0x400
+-#define VF610_ADC_REFSEL_VALT 0x100
++#define VF610_ADC_REFSEL_VALT 0x800
+ #define VF610_ADC_REFSEL_VBG 0x1000
+ #define VF610_ADC_ADTRG_HARD 0x2000
+ #define VF610_ADC_AVGS_8 0x4000
+diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c
+index 94daa9fc1247..6a135effb7c5 100644
+--- a/drivers/iio/light/tsl2563.c
++++ b/drivers/iio/light/tsl2563.c
+@@ -626,7 +626,7 @@ static irqreturn_t tsl2563_event_handler(int irq, void *private)
+ struct tsl2563_chip *chip = iio_priv(dev_info);
+
+ iio_push_event(dev_info,
+- IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
++ IIO_UNMOD_EVENT_CODE(IIO_INTENSITY,
+ 0,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
+index b52a704c3449..2d515a544f33 100644
+--- a/drivers/infiniband/ulp/isert/ib_isert.c
++++ b/drivers/infiniband/ulp/isert/ib_isert.c
+@@ -1586,7 +1586,7 @@ isert_rcv_completion(struct iser_rx_desc *desc,
+ struct isert_conn *isert_conn,
+ u32 xfer_len)
+ {
+- struct ib_device *ib_dev = isert_conn->cm_id->device;
++ struct ib_device *ib_dev = isert_conn->device->ib_device;
+ struct iscsi_hdr *hdr;
+ u64 rx_dma;
+ int rx_buflen, outstanding;
+diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
+index 4cfb0ac797ef..6f15cdf5ff40 100644
+--- a/drivers/input/serio/i8042.c
++++ b/drivers/input/serio/i8042.c
+@@ -397,8 +397,10 @@ static int i8042_start(struct serio *serio)
+ {
+ struct i8042_port *port = serio->port_data;
+
++ spin_lock_irq(&i8042_lock);
+ port->exists = true;
+- mb();
++ spin_unlock_irq(&i8042_lock);
++
+ return 0;
+ }
+
+@@ -411,16 +413,20 @@ static void i8042_stop(struct serio *serio)
+ {
+ struct i8042_port *port = serio->port_data;
+
++ spin_lock_irq(&i8042_lock);
+ port->exists = false;
++ port->serio = NULL;
++ spin_unlock_irq(&i8042_lock);
+
+ /*
++ * We need to make sure that interrupt handler finishes using
++ * our serio port before we return from this function.
+ * We synchronize with both AUX and KBD IRQs because there is
+ * a (very unlikely) chance that AUX IRQ is raised for KBD port
+ * and vice versa.
+ */
+ synchronize_irq(I8042_AUX_IRQ);
+ synchronize_irq(I8042_KBD_IRQ);
+- port->serio = NULL;
+ }
+
+ /*
+@@ -537,7 +543,7 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id)
+
+ spin_unlock_irqrestore(&i8042_lock, flags);
+
+- if (likely(port->exists && !filtered))
++ if (likely(serio && !filtered))
+ serio_interrupt(serio, data, dfl);
+
+ out:
+diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
+index 9c1e8adaf4fc..bf3fbd00a091 100644
+--- a/drivers/isdn/i4l/isdn_ppp.c
++++ b/drivers/isdn/i4l/isdn_ppp.c
+@@ -2364,7 +2364,7 @@ static struct ippp_ccp_reset_state *isdn_ppp_ccp_reset_alloc_state(struct ippp_s
+ id);
+ return NULL;
+ } else {
+- rs = kzalloc(sizeof(struct ippp_ccp_reset_state), GFP_KERNEL);
++ rs = kzalloc(sizeof(struct ippp_ccp_reset_state), GFP_ATOMIC);
+ if (!rs)
+ return NULL;
+ rs->state = CCPResetIdle;
+diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c
+index 19b491d2964f..ac6087f77e08 100644
+--- a/drivers/mailbox/mailbox.c
++++ b/drivers/mailbox/mailbox.c
+@@ -104,11 +104,14 @@ static void tx_tick(struct mbox_chan *chan, int r)
+ /* Submit next message */
+ msg_submit(chan);
+
++ if (!mssg)
++ return;
++
+ /* Notify the client */
+- if (mssg && chan->cl->tx_done)
++ if (chan->cl->tx_done)
+ chan->cl->tx_done(chan->cl, mssg, r);
+
+- if (chan->cl->tx_block)
++ if (r != -ETIME && chan->cl->tx_block)
+ complete(&chan->tx_complete);
+ }
+
+@@ -258,7 +261,7 @@ int mbox_send_message(struct mbox_chan *chan, void *mssg)
+
+ msg_submit(chan);
+
+- if (chan->cl->tx_block && chan->active_req) {
++ if (chan->cl->tx_block) {
+ unsigned long wait;
+ int ret;
+
+@@ -269,8 +272,8 @@ int mbox_send_message(struct mbox_chan *chan, void *mssg)
+
+ ret = wait_for_completion_timeout(&chan->tx_complete, wait);
+ if (ret == 0) {
+- t = -EIO;
+- tx_tick(chan, -EIO);
++ t = -ETIME;
++ tx_tick(chan, t);
+ }
+ }
+
+diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
+index 2b4e51c0544c..bf29edd8e8ee 100644
+--- a/drivers/md/raid1.c
++++ b/drivers/md/raid1.c
+@@ -1118,7 +1118,7 @@ static void make_request(struct mddev *mddev, struct bio * bio)
+ */
+ DEFINE_WAIT(w);
+ for (;;) {
+- flush_signals(current);
++ sigset_t full, old;
+ prepare_to_wait(&conf->wait_barrier,
+ &w, TASK_INTERRUPTIBLE);
+ if (bio_end_sector(bio) <= mddev->suspend_lo ||
+@@ -1127,7 +1127,10 @@ static void make_request(struct mddev *mddev, struct bio * bio)
+ !md_cluster_ops->area_resyncing(mddev,
+ bio->bi_iter.bi_sector, bio_end_sector(bio))))
+ break;
++ sigfillset(&full);
++ sigprocmask(SIG_BLOCK, &full, &old);
+ schedule();
++ sigprocmask(SIG_SETMASK, &old, NULL);
+ }
+ finish_wait(&conf->wait_barrier, &w);
+ }
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index d7942cbaa1b0..69542a92e4b0 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -5275,12 +5275,15 @@ static void make_request(struct mddev *mddev, struct bio * bi)
+ * userspace, we want an interruptible
+ * wait.
+ */
+- flush_signals(current);
+ prepare_to_wait(&conf->wait_for_overlap,
+ &w, TASK_INTERRUPTIBLE);
+ if (logical_sector >= mddev->suspend_lo &&
+ logical_sector < mddev->suspend_hi) {
++ sigset_t full, old;
++ sigfillset(&full);
++ sigprocmask(SIG_BLOCK, &full, &old);
+ schedule();
++ sigprocmask(SIG_SETMASK, &old, NULL);
+ do_prepare = true;
+ }
+ goto retry;
+@@ -5796,6 +5799,8 @@ static void raid5_do_work(struct work_struct *work)
+ pr_debug("%d stripes handled\n", handled);
+
+ spin_unlock_irq(&conf->device_lock);
++
++ async_tx_issue_pending_all();
+ blk_finish_plug(&plug);
+
+ pr_debug("--- raid5worker inactive\n");
+@@ -7441,12 +7446,10 @@ static void end_reshape(struct r5conf *conf)
+ {
+
+ if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) {
+- struct md_rdev *rdev;
+
+ spin_lock_irq(&conf->device_lock);
+ conf->previous_raid_disks = conf->raid_disks;
+- rdev_for_each(rdev, conf->mddev)
+- rdev->data_offset = rdev->new_data_offset;
++ md_finish_reshape(conf->mddev);
+ smp_wmb();
+ conf->reshape_progress = MaxSector;
+ spin_unlock_irq(&conf->device_lock);
+diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-ctrls.c b/drivers/media/i2c/s5c73m3/s5c73m3-ctrls.c
+index 8001cde1db1e..503135a4f47a 100644
+--- a/drivers/media/i2c/s5c73m3/s5c73m3-ctrls.c
++++ b/drivers/media/i2c/s5c73m3/s5c73m3-ctrls.c
+@@ -211,7 +211,7 @@ static int s5c73m3_3a_lock(struct s5c73m3 *state, struct v4l2_ctrl *ctrl)
+ }
+
+ if ((ctrl->val ^ ctrl->cur.val) & V4L2_LOCK_FOCUS)
+- ret = s5c73m3_af_run(state, ~af_lock);
++ ret = s5c73m3_af_run(state, !af_lock);
+
+ return ret;
+ }
+diff --git a/drivers/media/pci/cx88/cx88-cards.c b/drivers/media/pci/cx88/cx88-cards.c
+index 8f2556ec3971..61611d1682d1 100644
+--- a/drivers/media/pci/cx88/cx88-cards.c
++++ b/drivers/media/pci/cx88/cx88-cards.c
+@@ -3691,7 +3691,14 @@ struct cx88_core *cx88_core_create(struct pci_dev *pci, int nr)
+ core->nr = nr;
+ sprintf(core->name, "cx88[%d]", core->nr);
+
+- core->tvnorm = V4L2_STD_NTSC_M;
++ /*
++ * Note: Setting initial standard here would cause first call to
++ * cx88_set_tvnorm() to return without programming any registers. Leave
++ * it blank for at this point and it will get set later in
++ * cx8800_initdev()
++ */
++ core->tvnorm = 0;
++
+ core->width = 320;
+ core->height = 240;
+ core->field = V4L2_FIELD_INTERLACED;
+diff --git a/drivers/media/pci/cx88/cx88-video.c b/drivers/media/pci/cx88/cx88-video.c
+index c9decd80bf61..53073def2bec 100644
+--- a/drivers/media/pci/cx88/cx88-video.c
++++ b/drivers/media/pci/cx88/cx88-video.c
+@@ -1429,7 +1429,7 @@ static int cx8800_initdev(struct pci_dev *pci_dev,
+
+ /* initial device configuration */
+ mutex_lock(&core->lock);
+- cx88_set_tvnorm(core, core->tvnorm);
++ cx88_set_tvnorm(core, V4L2_STD_NTSC_M);
+ v4l2_ctrl_handler_setup(&core->video_hdl);
+ v4l2_ctrl_handler_setup(&core->audio_hdl);
+ cx88_video_mux(core, 0);
+diff --git a/drivers/media/pci/saa7164/saa7164-bus.c b/drivers/media/pci/saa7164/saa7164-bus.c
+index 6c73f5b155f6..1c779ea8b5ec 100644
+--- a/drivers/media/pci/saa7164/saa7164-bus.c
++++ b/drivers/media/pci/saa7164/saa7164-bus.c
+@@ -393,11 +393,11 @@ int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
+ msg_tmp.size = le16_to_cpu((__force __le16)msg_tmp.size);
+ msg_tmp.command = le32_to_cpu((__force __le32)msg_tmp.command);
+ msg_tmp.controlselector = le16_to_cpu((__force __le16)msg_tmp.controlselector);
++ memcpy(msg, &msg_tmp, sizeof(*msg));
+
+ /* No need to update the read positions, because this was a peek */
+ /* If the caller specifically want to peek, return */
+ if (peekonly) {
+- memcpy(msg, &msg_tmp, sizeof(*msg));
+ goto peekout;
+ }
+
+@@ -442,21 +442,15 @@ int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
+ space_rem = bus->m_dwSizeGetRing - curr_grp;
+
+ if (space_rem < sizeof(*msg)) {
+- /* msg wraps around the ring */
+- memcpy_fromio(msg, bus->m_pdwGetRing + curr_grp, space_rem);
+- memcpy_fromio((u8 *)msg + space_rem, bus->m_pdwGetRing,
+- sizeof(*msg) - space_rem);
+ if (buf)
+ memcpy_fromio(buf, bus->m_pdwGetRing + sizeof(*msg) -
+ space_rem, buf_size);
+
+ } else if (space_rem == sizeof(*msg)) {
+- memcpy_fromio(msg, bus->m_pdwGetRing + curr_grp, sizeof(*msg));
+ if (buf)
+ memcpy_fromio(buf, bus->m_pdwGetRing, buf_size);
+ } else {
+ /* Additional data wraps around the ring */
+- memcpy_fromio(msg, bus->m_pdwGetRing + curr_grp, sizeof(*msg));
+ if (buf) {
+ memcpy_fromio(buf, bus->m_pdwGetRing + curr_grp +
+ sizeof(*msg), space_rem - sizeof(*msg));
+@@ -469,15 +463,10 @@ int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
+
+ } else {
+ /* No wrapping */
+- memcpy_fromio(msg, bus->m_pdwGetRing + curr_grp, sizeof(*msg));
+ if (buf)
+ memcpy_fromio(buf, bus->m_pdwGetRing + curr_grp + sizeof(*msg),
+ buf_size);
+ }
+- /* Convert from little endian to CPU */
+- msg->size = le16_to_cpu((__force __le16)msg->size);
+- msg->command = le32_to_cpu((__force __le32)msg->command);
+- msg->controlselector = le16_to_cpu((__force __le16)msg->controlselector);
+
+ /* Update the read positions, adjusting the ring */
+ saa7164_writel(bus->m_dwGetReadPos, new_grp);
+diff --git a/drivers/media/platform/davinci/vpfe_capture.c b/drivers/media/platform/davinci/vpfe_capture.c
+index ccfcf3f528d3..445e17aeb8b2 100644
+--- a/drivers/media/platform/davinci/vpfe_capture.c
++++ b/drivers/media/platform/davinci/vpfe_capture.c
+@@ -1706,27 +1706,9 @@ static long vpfe_param_handler(struct file *file, void *priv,
+
+ switch (cmd) {
+ case VPFE_CMD_S_CCDC_RAW_PARAMS:
++ ret = -EINVAL;
+ v4l2_warn(&vpfe_dev->v4l2_dev,
+- "VPFE_CMD_S_CCDC_RAW_PARAMS: experimental ioctl\n");
+- if (ccdc_dev->hw_ops.set_params) {
+- ret = ccdc_dev->hw_ops.set_params(param);
+- if (ret) {
+- v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+- "Error setting parameters in CCDC\n");
+- goto unlock_out;
+- }
+- ret = vpfe_get_ccdc_image_format(vpfe_dev,
+- &vpfe_dev->fmt);
+- if (ret < 0) {
+- v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+- "Invalid image format at CCDC\n");
+- goto unlock_out;
+- }
+- } else {
+- ret = -EINVAL;
+- v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
+- "VPFE_CMD_S_CCDC_RAW_PARAMS not supported\n");
+- }
++ "VPFE_CMD_S_CCDC_RAW_PARAMS not supported\n");
+ break;
+ default:
+ ret = -ENOTTY;
+diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
+index 65f80b8b9f7a..eb9e7feb9b13 100644
+--- a/drivers/media/rc/imon.c
++++ b/drivers/media/rc/imon.c
+@@ -1629,7 +1629,7 @@ static void imon_incoming_packet(struct imon_context *ictx,
+ if (kc == KEY_KEYBOARD && !ictx->release_code) {
+ ictx->last_keycode = kc;
+ if (!nomouse) {
+- ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1;
++ ictx->pad_mouse = !ictx->pad_mouse;
+ dev_dbg(dev, "toggling to %s mode\n",
+ ictx->pad_mouse ? "mouse" : "keyboard");
+ spin_unlock_irqrestore(&ictx->kc_lock, flags);
+diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
+index 98893a8332c7..4795c31ceebc 100644
+--- a/drivers/media/rc/ir-lirc-codec.c
++++ b/drivers/media/rc/ir-lirc-codec.c
+@@ -257,7 +257,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
+ return 0;
+
+ case LIRC_GET_REC_RESOLUTION:
+- val = dev->rx_resolution;
++ val = dev->rx_resolution / 1000;
+ break;
+
+ case LIRC_SET_WIDEBAND_RECEIVER:
+diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c
+index 65fed7146e9b..cc91f7b3d90c 100644
+--- a/drivers/misc/enclosure.c
++++ b/drivers/misc/enclosure.c
+@@ -375,6 +375,7 @@ int enclosure_add_device(struct enclosure_device *edev, int component,
+ struct device *dev)
+ {
+ struct enclosure_component *cdev;
++ int err;
+
+ if (!edev || component >= edev->components)
+ return -EINVAL;
+@@ -384,12 +385,17 @@ int enclosure_add_device(struct enclosure_device *edev, int component,
+ if (cdev->dev == dev)
+ return -EEXIST;
+
+- if (cdev->dev)
++ if (cdev->dev) {
+ enclosure_remove_links(cdev);
+-
+- put_device(cdev->dev);
++ put_device(cdev->dev);
++ }
+ cdev->dev = get_device(dev);
+- return enclosure_add_links(cdev);
++ err = enclosure_add_links(cdev);
++ if (err) {
++ put_device(cdev->dev);
++ cdev->dev = NULL;
++ }
++ return err;
+ }
+ EXPORT_SYMBOL_GPL(enclosure_add_device);
+
+diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
+index 5d5d36272bb5..448123268e3b 100644
+--- a/drivers/mtd/spi-nor/fsl-quadspi.c
++++ b/drivers/mtd/spi-nor/fsl-quadspi.c
+@@ -140,15 +140,15 @@
+ #define LUT_MODE 4
+ #define LUT_MODE2 5
+ #define LUT_MODE4 6
+-#define LUT_READ 7
+-#define LUT_WRITE 8
++#define LUT_FSL_READ 7
++#define LUT_FSL_WRITE 8
+ #define LUT_JMP_ON_CS 9
+ #define LUT_ADDR_DDR 10
+ #define LUT_MODE_DDR 11
+ #define LUT_MODE2_DDR 12
+ #define LUT_MODE4_DDR 13
+-#define LUT_READ_DDR 14
+-#define LUT_WRITE_DDR 15
++#define LUT_FSL_READ_DDR 14
++#define LUT_FSL_WRITE_DDR 15
+ #define LUT_DATA_LEARN 16
+
+ /*
+@@ -312,7 +312,7 @@ static void fsl_qspi_init_lut(struct fsl_qspi *q)
+
+ writel(LUT0(CMD, PAD1, cmd) | LUT1(ADDR, PAD1, addrlen),
+ base + QUADSPI_LUT(lut_base));
+- writel(LUT0(DUMMY, PAD1, dummy) | LUT1(READ, PAD4, rxfifo),
++ writel(LUT0(DUMMY, PAD1, dummy) | LUT1(FSL_READ, PAD4, rxfifo),
+ base + QUADSPI_LUT(lut_base + 1));
+
+ /* Write enable */
+@@ -333,11 +333,11 @@ static void fsl_qspi_init_lut(struct fsl_qspi *q)
+
+ writel(LUT0(CMD, PAD1, cmd) | LUT1(ADDR, PAD1, addrlen),
+ base + QUADSPI_LUT(lut_base));
+- writel(LUT0(WRITE, PAD1, 0), base + QUADSPI_LUT(lut_base + 1));
++ writel(LUT0(FSL_WRITE, PAD1, 0), base + QUADSPI_LUT(lut_base + 1));
+
+ /* Read Status */
+ lut_base = SEQID_RDSR * 4;
+- writel(LUT0(CMD, PAD1, SPINOR_OP_RDSR) | LUT1(READ, PAD1, 0x1),
++ writel(LUT0(CMD, PAD1, SPINOR_OP_RDSR) | LUT1(FSL_READ, PAD1, 0x1),
+ base + QUADSPI_LUT(lut_base));
+
+ /* Erase a sector */
+@@ -362,17 +362,17 @@ static void fsl_qspi_init_lut(struct fsl_qspi *q)
+
+ /* READ ID */
+ lut_base = SEQID_RDID * 4;
+- writel(LUT0(CMD, PAD1, SPINOR_OP_RDID) | LUT1(READ, PAD1, 0x8),
++ writel(LUT0(CMD, PAD1, SPINOR_OP_RDID) | LUT1(FSL_READ, PAD1, 0x8),
+ base + QUADSPI_LUT(lut_base));
+
+ /* Write Register */
+ lut_base = SEQID_WRSR * 4;
+- writel(LUT0(CMD, PAD1, SPINOR_OP_WRSR) | LUT1(WRITE, PAD1, 0x2),
++ writel(LUT0(CMD, PAD1, SPINOR_OP_WRSR) | LUT1(FSL_WRITE, PAD1, 0x2),
+ base + QUADSPI_LUT(lut_base));
+
+ /* Read Configuration Register */
+ lut_base = SEQID_RDCR * 4;
+- writel(LUT0(CMD, PAD1, SPINOR_OP_RDCR) | LUT1(READ, PAD1, 0x1),
++ writel(LUT0(CMD, PAD1, SPINOR_OP_RDCR) | LUT1(FSL_READ, PAD1, 0x1),
+ base + QUADSPI_LUT(lut_base));
+
+ /* Write disable */
+diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
+index 7896f0f1fa05..f9713fe036ef 100644
+--- a/drivers/net/ethernet/broadcom/tg3.c
++++ b/drivers/net/ethernet/broadcom/tg3.c
+@@ -8722,11 +8722,14 @@ static void tg3_free_consistent(struct tg3 *tp)
+ tg3_mem_rx_release(tp);
+ tg3_mem_tx_release(tp);
+
++ /* Protect tg3_get_stats64() from reading freed tp->hw_stats. */
++ tg3_full_lock(tp, 0);
+ if (tp->hw_stats) {
+ dma_free_coherent(&tp->pdev->dev, sizeof(struct tg3_hw_stats),
+ tp->hw_stats, tp->stats_mapping);
+ tp->hw_stats = NULL;
+ }
++ tg3_full_unlock(tp);
+ }
+
+ /*
+diff --git a/drivers/net/ethernet/mellanox/mlx4/icm.c b/drivers/net/ethernet/mellanox/mlx4/icm.c
+index 2a9dd460a95f..e1f9e7cebf8f 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/icm.c
++++ b/drivers/net/ethernet/mellanox/mlx4/icm.c
+@@ -118,8 +118,13 @@ static int mlx4_alloc_icm_coherent(struct device *dev, struct scatterlist *mem,
+ if (!buf)
+ return -ENOMEM;
+
++ if (offset_in_page(buf)) {
++ dma_free_coherent(dev, PAGE_SIZE << order,
++ buf, sg_dma_address(mem));
++ return -ENOMEM;
++ }
++
+ sg_set_buf(mem, buf, PAGE_SIZE << order);
+- BUG_ON(mem->offset);
+ sg_dma_len(mem) = PAGE_SIZE << order;
+ return 0;
+ }
+diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
+index 3df51faf18ae..af4b1f4c24d2 100644
+--- a/drivers/net/ethernet/realtek/r8169.c
++++ b/drivers/net/ethernet/realtek/r8169.c
+@@ -326,6 +326,7 @@ enum cfg_version {
+ static const struct pci_device_id rtl8169_pci_tbl[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
+ { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
++ { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8161), 0, 0, RTL_CFG_1 },
+ { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167), 0, 0, RTL_CFG_0 },
+ { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168), 0, 0, RTL_CFG_1 },
+ { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), 0, 0, RTL_CFG_0 },
+diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
+index c93a458f96f7..e2dd94a91c15 100644
+--- a/drivers/net/ethernet/renesas/sh_eth.c
++++ b/drivers/net/ethernet/renesas/sh_eth.c
+@@ -726,6 +726,7 @@ static struct sh_eth_cpu_data sh7734_data = {
+ .tsu = 1,
+ .hw_crc = 1,
+ .select_mii = 1,
++ .shift_rd0 = 1,
+ };
+
+ /* SH7763 */
+@@ -794,6 +795,7 @@ static struct sh_eth_cpu_data r8a7740_data = {
+ .rpadir_value = 2 << 16,
+ .no_trimd = 1,
+ .no_ade = 1,
++ .hw_crc = 1,
+ .tsu = 1,
+ .select_mii = 1,
+ .shift_rd0 = 1,
+diff --git a/drivers/net/irda/mcs7780.c b/drivers/net/irda/mcs7780.c
+index bca6a1e72d1d..e1bb802d4a4d 100644
+--- a/drivers/net/irda/mcs7780.c
++++ b/drivers/net/irda/mcs7780.c
+@@ -141,9 +141,19 @@ static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val)
+ static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val)
+ {
+ struct usb_device *dev = mcs->usbdev;
+- int ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
+- MCS_RD_RTYPE, 0, reg, val, 2,
+- msecs_to_jiffies(MCS_CTRL_TIMEOUT));
++ void *dmabuf;
++ int ret;
++
++ dmabuf = kmalloc(sizeof(__u16), GFP_KERNEL);
++ if (!dmabuf)
++ return -ENOMEM;
++
++ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
++ MCS_RD_RTYPE, 0, reg, dmabuf, 2,
++ msecs_to_jiffies(MCS_CTRL_TIMEOUT));
++
++ memcpy(val, dmabuf, sizeof(__u16));
++ kfree(dmabuf);
+
+ return ret;
+ }
+diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
+index 21a668faacd7..1ca78b46c01b 100644
+--- a/drivers/net/phy/phy.c
++++ b/drivers/net/phy/phy.c
+@@ -512,6 +512,9 @@ void phy_stop_machine(struct phy_device *phydev)
+ if (phydev->state > PHY_UP && phydev->state != PHY_HALTED)
+ phydev->state = PHY_UP;
+ mutex_unlock(&phydev->lock);
++
++ /* Now we can run the state machine synchronously */
++ phy_state_machine(&phydev->state_queue.work);
+ }
+
+ /**
+diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
+index d551df62e61a..afb87840f853 100644
+--- a/drivers/net/phy/phy_device.c
++++ b/drivers/net/phy/phy_device.c
+@@ -1281,6 +1281,8 @@ static int phy_remove(struct device *dev)
+ {
+ struct phy_device *phydev = to_phy_device(dev);
+
++ cancel_delayed_work_sync(&phydev->state_queue);
++
+ mutex_lock(&phydev->lock);
+ phydev->state = PHY_DOWN;
+ mutex_unlock(&phydev->lock);
+@@ -1355,7 +1357,7 @@ static struct phy_driver genphy_driver[] = {
+ .phy_id = 0xffffffff,
+ .phy_id_mask = 0xffffffff,
+ .name = "Generic PHY",
+- .soft_reset = genphy_soft_reset,
++ .soft_reset = genphy_no_soft_reset,
+ .config_init = genphy_config_init,
+ .features = PHY_GBIT_FEATURES | SUPPORTED_MII |
+ SUPPORTED_AUI | SUPPORTED_FIBRE |
+diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c
+index 1e9cdca37014..c626971096d4 100644
+--- a/drivers/net/usb/kaweth.c
++++ b/drivers/net/usb/kaweth.c
+@@ -1009,6 +1009,7 @@ static int kaweth_probe(
+ struct net_device *netdev;
+ const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
+ int result = 0;
++ int rv = -EIO;
+
+ dev_dbg(dev,
+ "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n",
+@@ -1029,6 +1030,7 @@ static int kaweth_probe(
+ kaweth = netdev_priv(netdev);
+ kaweth->dev = udev;
+ kaweth->net = netdev;
++ kaweth->intf = intf;
+
+ spin_lock_init(&kaweth->device_lock);
+ init_waitqueue_head(&kaweth->term_wait);
+@@ -1048,6 +1050,10 @@ static int kaweth_probe(
+ /* Download the firmware */
+ dev_info(dev, "Downloading firmware...\n");
+ kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
++ if (!kaweth->firmware_buf) {
++ rv = -ENOMEM;
++ goto err_free_netdev;
++ }
+ if ((result = kaweth_download_firmware(kaweth,
+ "kaweth/new_code.bin",
+ 100,
+@@ -1139,8 +1145,6 @@ err_fw:
+
+ dev_dbg(dev, "Initializing net device.\n");
+
+- kaweth->intf = intf;
+-
+ kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!kaweth->tx_urb)
+ goto err_free_netdev;
+@@ -1210,7 +1214,7 @@ err_only_tx:
+ err_free_netdev:
+ free_netdev(netdev);
+
+- return -EIO;
++ return rv;
+ }
+
+ /****************************************************************
+diff --git a/drivers/net/wireless/ath/ath10k/wmi-ops.h b/drivers/net/wireless/ath/ath10k/wmi-ops.h
+index c8b64e7a6089..deed8dcfd91a 100644
+--- a/drivers/net/wireless/ath/ath10k/wmi-ops.h
++++ b/drivers/net/wireless/ath/ath10k/wmi-ops.h
+@@ -562,6 +562,9 @@ ath10k_wmi_vdev_spectral_conf(struct ath10k *ar,
+ struct sk_buff *skb;
+ u32 cmd_id;
+
++ if (!ar->wmi.ops->gen_vdev_spectral_conf)
++ return -EOPNOTSUPP;
++
+ skb = ar->wmi.ops->gen_vdev_spectral_conf(ar, arg);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+@@ -577,6 +580,9 @@ ath10k_wmi_vdev_spectral_enable(struct ath10k *ar, u32 vdev_id, u32 trigger,
+ struct sk_buff *skb;
+ u32 cmd_id;
+
++ if (!ar->wmi.ops->gen_vdev_spectral_enable)
++ return -EOPNOTSUPP;
++
+ skb = ar->wmi.ops->gen_vdev_spectral_enable(ar, vdev_id, trigger,
+ enable);
+ if (IS_ERR(skb))
+diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+index 1ad66b76749b..c1b661e5c8c4 100644
+--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+@@ -1816,8 +1816,6 @@ static void ar9003_hw_spectral_scan_wait(struct ath_hw *ah)
+ static void ar9003_hw_tx99_start(struct ath_hw *ah, u32 qnum)
+ {
+ REG_SET_BIT(ah, AR_PHY_TEST, PHY_AGC_CLR);
+- REG_SET_BIT(ah, 0x9864, 0x7f000);
+- REG_SET_BIT(ah, 0x9924, 0x7f00fe);
+ REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
+ REG_WRITE(ah, AR_CR, AR_CR_RXD);
+ REG_WRITE(ah, AR_DLCL_IFS(qnum), 0);
+diff --git a/drivers/net/wireless/ath/ath9k/tx99.c b/drivers/net/wireless/ath/ath9k/tx99.c
+index ac4781f37e78..b4e6304afd40 100644
+--- a/drivers/net/wireless/ath/ath9k/tx99.c
++++ b/drivers/net/wireless/ath/ath9k/tx99.c
+@@ -190,22 +190,27 @@ static ssize_t write_file_tx99(struct file *file, const char __user *user_buf,
+ if (strtobool(buf, &start))
+ return -EINVAL;
+
++ mutex_lock(&sc->mutex);
++
+ if (start == sc->tx99_state) {
+ if (!start)
+- return count;
++ goto out;
+ ath_dbg(common, XMIT, "Resetting TX99\n");
+ ath9k_tx99_deinit(sc);
+ }
+
+ if (!start) {
+ ath9k_tx99_deinit(sc);
+- return count;
++ goto out;
+ }
+
+ r = ath9k_tx99_init(sc);
+- if (r)
++ if (r) {
++ mutex_unlock(&sc->mutex);
+ return r;
+-
++ }
++out:
++ mutex_unlock(&sc->mutex);
+ return count;
+ }
+
+diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c
+index c2a238426425..a058151f5eed 100644
+--- a/drivers/net/wireless/ath/wil6210/main.c
++++ b/drivers/net/wireless/ath/wil6210/main.c
+@@ -323,18 +323,19 @@ static void wil_fw_error_worker(struct work_struct *work)
+
+ wil->last_fw_recovery = jiffies;
+
++ wil_info(wil, "fw error recovery requested (try %d)...\n",
++ wil->recovery_count);
++ if (!no_fw_recovery)
++ wil->recovery_state = fw_recovery_running;
++ if (wil_wait_for_recovery(wil) != 0)
++ return;
++
+ mutex_lock(&wil->mutex);
+ switch (wdev->iftype) {
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_P2P_CLIENT:
+ case NL80211_IFTYPE_MONITOR:
+- wil_info(wil, "fw error recovery requested (try %d)...\n",
+- wil->recovery_count);
+- if (!no_fw_recovery)
+- wil->recovery_state = fw_recovery_running;
+- if (0 != wil_wait_for_recovery(wil))
+- break;
+-
++ /* silent recovery, upper layers will see disconnect */
+ __wil_down(wil);
+ __wil_up(wil);
+ break;
+diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h
+index 8a495b318b6f..aa8400e3839c 100644
+--- a/drivers/net/xen-netback/common.h
++++ b/drivers/net/xen-netback/common.h
+@@ -195,6 +195,7 @@ struct xenvif_queue { /* Per-queue data for xenvif */
+ unsigned long remaining_credit;
+ struct timer_list credit_timeout;
+ u64 credit_window_start;
++ bool rate_limited;
+
+ /* Statistics */
+ struct xenvif_stats stats;
+diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
+index 1a83e190fc15..e34527071260 100644
+--- a/drivers/net/xen-netback/interface.c
++++ b/drivers/net/xen-netback/interface.c
+@@ -99,7 +99,11 @@ static int xenvif_poll(struct napi_struct *napi, int budget)
+
+ if (work_done < budget) {
+ napi_complete(napi);
+- xenvif_napi_schedule_or_enable_events(queue);
++ /* If the queue is rate-limited, it shall be
++ * rescheduled in the timer callback.
++ */
++ if (likely(!queue->rate_limited))
++ xenvif_napi_schedule_or_enable_events(queue);
+ }
+
+ return work_done;
+diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
+index 5e5b6184e720..7bd3c5a8116d 100644
+--- a/drivers/net/xen-netback/netback.c
++++ b/drivers/net/xen-netback/netback.c
+@@ -640,6 +640,7 @@ static void tx_add_credit(struct xenvif_queue *queue)
+ max_credit = ULONG_MAX; /* wrapped: clamp to ULONG_MAX */
+
+ queue->remaining_credit = min(max_credit, max_burst);
++ queue->rate_limited = false;
+ }
+
+ void xenvif_tx_credit_callback(unsigned long data)
+@@ -1152,8 +1153,10 @@ static bool tx_credit_exceeded(struct xenvif_queue *queue, unsigned size)
+ msecs_to_jiffies(queue->credit_usec / 1000);
+
+ /* Timer could already be pending in rare cases. */
+- if (timer_pending(&queue->credit_timeout))
++ if (timer_pending(&queue->credit_timeout)) {
++ queue->rate_limited = true;
+ return true;
++ }
+
+ /* Passed the point where we can replenish credit? */
+ if (time_after_eq64(now, next_credit)) {
+@@ -1168,6 +1171,7 @@ static bool tx_credit_exceeded(struct xenvif_queue *queue, unsigned size)
+ mod_timer(&queue->credit_timeout,
+ next_credit);
+ queue->credit_window_start = next_credit;
++ queue->rate_limited = true;
+
+ return true;
+ }
+diff --git a/drivers/of/device.c b/drivers/of/device.c
+index 20c1332a0018..493b21bd1199 100644
+--- a/drivers/of/device.c
++++ b/drivers/of/device.c
+@@ -212,6 +212,7 @@ ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len)
+
+ return tsize;
+ }
++EXPORT_SYMBOL_GPL(of_device_get_modalias);
+
+ /**
+ * of_device_uevent - Display OF related uevent information
+@@ -274,3 +275,4 @@ int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env)
+
+ return 0;
+ }
++EXPORT_SYMBOL_GPL(of_device_uevent_modalias);
+diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
+index 74f4a26e16b5..98101c4118bb 100644
+--- a/drivers/pci/pci-driver.c
++++ b/drivers/pci/pci-driver.c
+@@ -937,6 +937,7 @@ static int pci_pm_thaw_noirq(struct device *dev)
+ return pci_legacy_resume_early(dev);
+
+ pci_update_current_state(pci_dev, PCI_D0);
++ pci_restore_state(pci_dev);
+
+ if (drv && drv->pm && drv->pm->thaw_noirq)
+ error = drv->pm->thaw_noirq(dev);
+diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c
+index 0b7afa50121a..390feee4d47c 100644
+--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
++++ b/drivers/pinctrl/samsung/pinctrl-exynos.c
+@@ -194,8 +194,6 @@ static int exynos_irq_request_resources(struct irq_data *irqd)
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+
+- exynos_irq_unmask(irqd);
+-
+ return 0;
+ }
+
+@@ -216,8 +214,6 @@ static void exynos_irq_release_resources(struct irq_data *irqd)
+ shift = irqd->hwirq * bank_type->fld_width[PINCFG_TYPE_FUNC];
+ mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
+
+- exynos_irq_mask(irqd);
+-
+ spin_lock_irqsave(&bank->slock, flags);
+
+ con = readl(d->virt_base + reg_con);
+diff --git a/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c b/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c
+index 7376a97b5e65..727ce62de0bd 100644
+--- a/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c
++++ b/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c
+@@ -800,6 +800,7 @@ static const struct sunxi_desc_pin sun4i_a10_pins[] = {
+ SUNXI_FUNCTION(0x2, "lcd1"), /* D16 */
+ SUNXI_FUNCTION(0x3, "pata"), /* ATAD12 */
+ SUNXI_FUNCTION(0x4, "keypad"), /* IN6 */
++ SUNXI_FUNCTION(0x5, "sim"), /* DET */
+ SUNXI_FUNCTION_IRQ(0x6, 16), /* EINT16 */
+ SUNXI_FUNCTION(0x7, "csi1")), /* D16 */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(H, 17),
+diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
+index ce129e595b55..5c935847599c 100644
+--- a/drivers/scsi/fnic/fnic.h
++++ b/drivers/scsi/fnic/fnic.h
+@@ -248,6 +248,7 @@ struct fnic {
+ struct completion *remove_wait; /* device remove thread blocks */
+
+ atomic_t in_flight; /* io counter */
++ bool internal_reset_inprogress;
+ u32 _reserved; /* fill hole */
+ unsigned long state_flags; /* protected by host lock */
+ enum fnic_state state;
+diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
+index 25436cd2860c..eaf29b18fb7a 100644
+--- a/drivers/scsi/fnic/fnic_scsi.c
++++ b/drivers/scsi/fnic/fnic_scsi.c
+@@ -2517,6 +2517,19 @@ int fnic_host_reset(struct scsi_cmnd *sc)
+ unsigned long wait_host_tmo;
+ struct Scsi_Host *shost = sc->device->host;
+ struct fc_lport *lp = shost_priv(shost);
++ struct fnic *fnic = lport_priv(lp);
++ unsigned long flags;
++
++ spin_lock_irqsave(&fnic->fnic_lock, flags);
++ if (fnic->internal_reset_inprogress == 0) {
++ fnic->internal_reset_inprogress = 1;
++ } else {
++ spin_unlock_irqrestore(&fnic->fnic_lock, flags);
++ FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
++ "host reset in progress skipping another host reset\n");
++ return SUCCESS;
++ }
++ spin_unlock_irqrestore(&fnic->fnic_lock, flags);
+
+ /*
+ * If fnic_reset is successful, wait for fabric login to complete
+@@ -2537,6 +2550,9 @@ int fnic_host_reset(struct scsi_cmnd *sc)
+ }
+ }
+
++ spin_lock_irqsave(&fnic->fnic_lock, flags);
++ fnic->internal_reset_inprogress = 0;
++ spin_unlock_irqrestore(&fnic->fnic_lock, flags);
+ return ret;
+ }
+
+diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
+index 14a781b6b88d..093f7b4847df 100644
+--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
++++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
+@@ -4410,14 +4410,13 @@ _base_make_ioc_ready(struct MPT3SAS_ADAPTER *ioc, int sleep_flag,
+ static int
+ _base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
+ {
+- int r, i;
++ int r, i, index;
+ unsigned long flags;
+ u32 reply_address;
+ u16 smid;
+ struct _tr_list *delayed_tr, *delayed_tr_next;
+ struct adapter_reply_queue *reply_q;
+- long reply_post_free;
+- u32 reply_post_free_sz, index = 0;
++ Mpi2ReplyDescriptorsUnion_t *reply_post_free_contig;
+
+ dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
+ __func__));
+@@ -4488,27 +4487,27 @@ _base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
+ _base_assign_reply_queues(ioc);
+
+ /* initialize Reply Post Free Queue */
+- reply_post_free_sz = ioc->reply_post_queue_depth *
+- sizeof(Mpi2DefaultReplyDescriptor_t);
+- reply_post_free = (long)ioc->reply_post[index].reply_post_free;
++ index = 0;
++ reply_post_free_contig = ioc->reply_post[0].reply_post_free;
+ list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
++ /*
++ * If RDPQ is enabled, switch to the next allocation.
++ * Otherwise advance within the contiguous region.
++ */
++ if (ioc->rdpq_array_enable) {
++ reply_q->reply_post_free =
++ ioc->reply_post[index++].reply_post_free;
++ } else {
++ reply_q->reply_post_free = reply_post_free_contig;
++ reply_post_free_contig += ioc->reply_post_queue_depth;
++ }
++
+ reply_q->reply_post_host_index = 0;
+- reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
+- reply_post_free;
+ for (i = 0; i < ioc->reply_post_queue_depth; i++)
+ reply_q->reply_post_free[i].Words =
+ cpu_to_le64(ULLONG_MAX);
+ if (!_base_is_controller_msix_enabled(ioc))
+ goto skip_init_reply_post_free_queue;
+- /*
+- * If RDPQ is enabled, switch to the next allocation.
+- * Otherwise advance within the contiguous region.
+- */
+- if (ioc->rdpq_array_enable)
+- reply_post_free = (long)
+- ioc->reply_post[++index].reply_post_free;
+- else
+- reply_post_free += reply_post_free_sz;
+ }
+ skip_init_reply_post_free_queue:
+
+diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
+index 82b92c414a9c..c1b2e86839ae 100644
+--- a/drivers/scsi/qla2xxx/qla_attr.c
++++ b/drivers/scsi/qla2xxx/qla_attr.c
+@@ -329,12 +329,15 @@ qla2x00_sysfs_read_optrom(struct file *filp, struct kobject *kobj,
+ struct qla_hw_data *ha = vha->hw;
+ ssize_t rval = 0;
+
++ mutex_lock(&ha->optrom_mutex);
++
+ if (ha->optrom_state != QLA_SREADING)
+- return 0;
++ goto out;
+
+- mutex_lock(&ha->optrom_mutex);
+ rval = memory_read_from_buffer(buf, count, &off, ha->optrom_buffer,
+ ha->optrom_region_size);
++
++out:
+ mutex_unlock(&ha->optrom_mutex);
+
+ return rval;
+@@ -349,14 +352,19 @@ qla2x00_sysfs_write_optrom(struct file *filp, struct kobject *kobj,
+ struct device, kobj)));
+ struct qla_hw_data *ha = vha->hw;
+
+- if (ha->optrom_state != QLA_SWRITING)
++ mutex_lock(&ha->optrom_mutex);
++
++ if (ha->optrom_state != QLA_SWRITING) {
++ mutex_unlock(&ha->optrom_mutex);
+ return -EINVAL;
+- if (off > ha->optrom_region_size)
++ }
++ if (off > ha->optrom_region_size) {
++ mutex_unlock(&ha->optrom_mutex);
+ return -ERANGE;
++ }
+ if (off + count > ha->optrom_region_size)
+ count = ha->optrom_region_size - off;
+
+- mutex_lock(&ha->optrom_mutex);
+ memcpy(&ha->optrom_buffer[off], buf, count);
+ mutex_unlock(&ha->optrom_mutex);
+
+diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
+index 4fbfcdc5cb24..ebaefecd6e82 100644
+--- a/drivers/spi/spi-dw.c
++++ b/drivers/spi/spi-dw.c
+@@ -113,7 +113,10 @@ static const struct file_operations dw_spi_regs_ops = {
+
+ static int dw_spi_debugfs_init(struct dw_spi *dws)
+ {
+- dws->debugfs = debugfs_create_dir("dw_spi", NULL);
++ char name[128];
++
++ snprintf(name, 128, "dw_spi-%s", dev_name(&dws->master->dev));
++ dws->debugfs = debugfs_create_dir(name, NULL);
+ if (!dws->debugfs)
+ return -ENOMEM;
+
+diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c
+index 94938436aef9..2f9f2958c203 100644
+--- a/drivers/spmi/spmi.c
++++ b/drivers/spmi/spmi.c
+@@ -348,11 +348,23 @@ static int spmi_drv_remove(struct device *dev)
+ return 0;
+ }
+
++static int spmi_drv_uevent(struct device *dev, struct kobj_uevent_env *env)
++{
++ int ret;
++
++ ret = of_device_uevent_modalias(dev, env);
++ if (ret != -ENODEV)
++ return ret;
++
++ return 0;
++}
++
+ static struct bus_type spmi_bus_type = {
+ .name = "spmi",
+ .match = spmi_device_match,
+ .probe = spmi_drv_probe,
+ .remove = spmi_drv_remove,
++ .uevent = spmi_drv_uevent,
+ };
+
+ /**
+diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
+index a503132f91e8..ab6139b5472f 100644
+--- a/drivers/staging/comedi/comedi_fops.c
++++ b/drivers/staging/comedi/comedi_fops.c
+@@ -2875,9 +2875,6 @@ static int __init comedi_init(void)
+
+ comedi_class->dev_groups = comedi_dev_groups;
+
+- /* XXX requires /proc interface */
+- comedi_proc_init();
+-
+ /* create devices files for legacy/manual use */
+ for (i = 0; i < comedi_num_legacy_minors; i++) {
+ struct comedi_device *dev;
+@@ -2895,6 +2892,9 @@ static int __init comedi_init(void)
+ mutex_unlock(&dev->mutex);
+ }
+
++ /* XXX requires /proc interface */
++ comedi_proc_init();
++
+ return 0;
+ }
+ module_init(comedi_init);
+diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c
+index 7bc3e4a73834..16af77d20bdb 100644
+--- a/drivers/staging/iio/resolver/ad2s1210.c
++++ b/drivers/staging/iio/resolver/ad2s1210.c
+@@ -468,7 +468,7 @@ static int ad2s1210_read_raw(struct iio_dev *indio_dev,
+ long m)
+ {
+ struct ad2s1210_state *st = iio_priv(indio_dev);
+- bool negative;
++ u16 negative;
+ int ret = 0;
+ u16 pos;
+ s16 vel;
+diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+index ef3c73e38172..4273e34ff3ea 100644
+--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
++++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+@@ -48,6 +48,7 @@ static struct usb_device_id rtw_usb_id_tbl[] = {
+ {USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */
+ {USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */
+ {USB_DEVICE(0x2001, 0x3311)}, /* DLink GO-USB-N150 REV B1 */
++ {USB_DEVICE(0x2357, 0x010c)}, /* TP-Link TL-WN722N v2 */
+ {USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
+ {} /* Terminating entry */
+ };
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 2fc3a231c2b6..7444640a7453 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -426,6 +426,7 @@ int iscsit_reset_np_thread(
+ return 0;
+ }
+ np->np_thread_state = ISCSI_NP_THREAD_RESET;
++ atomic_inc(&np->np_reset_count);
+
+ if (np->np_thread) {
+ spin_unlock_bh(&np->np_thread_lock);
+@@ -1992,6 +1993,7 @@ iscsit_setup_text_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ cmd->cmd_sn = be32_to_cpu(hdr->cmdsn);
+ cmd->exp_stat_sn = be32_to_cpu(hdr->exp_statsn);
+ cmd->data_direction = DMA_NONE;
++ kfree(cmd->text_in_ptr);
+ cmd->text_in_ptr = NULL;
+
+ return 0;
+@@ -4589,8 +4591,11 @@ static void iscsit_logout_post_handler_closesession(
+ * always sleep waiting for RX/TX thread shutdown to complete
+ * within iscsit_close_connection().
+ */
+- if (conn->conn_transport->transport_type == ISCSI_TCP)
++ if (conn->conn_transport->transport_type == ISCSI_TCP) {
+ sleep = cmpxchg(&conn->tx_thread_active, true, false);
++ if (!sleep)
++ return;
++ }
+
+ atomic_set(&conn->conn_logout_remove, 0);
+ complete(&conn->conn_logout_comp);
+@@ -4606,8 +4611,11 @@ static void iscsit_logout_post_handler_samecid(
+ {
+ int sleep = 1;
+
+- if (conn->conn_transport->transport_type == ISCSI_TCP)
++ if (conn->conn_transport->transport_type == ISCSI_TCP) {
+ sleep = cmpxchg(&conn->tx_thread_active, true, false);
++ if (!sleep)
++ return;
++ }
+
+ atomic_set(&conn->conn_logout_remove, 0);
+ complete(&conn->conn_logout_comp);
+diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
+index c5cbd702e7cd..ee3a4bb9fba7 100644
+--- a/drivers/target/iscsi/iscsi_target_login.c
++++ b/drivers/target/iscsi/iscsi_target_login.c
+@@ -1290,9 +1290,11 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
+ flush_signals(current);
+
+ spin_lock_bh(&np->np_thread_lock);
+- if (np->np_thread_state == ISCSI_NP_THREAD_RESET) {
++ if (atomic_dec_if_positive(&np->np_reset_count) >= 0) {
+ np->np_thread_state = ISCSI_NP_THREAD_ACTIVE;
++ spin_unlock_bh(&np->np_thread_lock);
+ complete(&np->np_restart_comp);
++ return 1;
+ } else if (np->np_thread_state == ISCSI_NP_THREAD_SHUTDOWN) {
+ spin_unlock_bh(&np->np_thread_lock);
+ goto exit;
+@@ -1325,7 +1327,8 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
+ goto exit;
+ } else if (rc < 0) {
+ spin_lock_bh(&np->np_thread_lock);
+- if (np->np_thread_state == ISCSI_NP_THREAD_RESET) {
++ if (atomic_dec_if_positive(&np->np_reset_count) >= 0) {
++ np->np_thread_state = ISCSI_NP_THREAD_ACTIVE;
+ spin_unlock_bh(&np->np_thread_lock);
+ complete(&np->np_restart_comp);
+ iscsit_put_transport(conn->conn_transport);
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index 95c1c4ecf336..b7d27b816359 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -733,6 +733,15 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
+ if (cmd->transport_state & CMD_T_ABORTED ||
+ cmd->transport_state & CMD_T_STOP) {
+ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ /*
++ * If COMPARE_AND_WRITE was stopped by __transport_wait_for_tasks(),
++ * release se_device->caw_sem obtained by sbc_compare_and_write()
++ * since target_complete_ok_work() or target_complete_failure_work()
++ * won't be called to invoke the normal CAW completion callbacks.
++ */
++ if (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE) {
++ up(&dev->caw_sem);
++ }
+ complete_all(&cmd->t_transport_stop_comp);
+ return;
+ } else if (!success) {
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index 7983298ab32c..acab64245923 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1771,6 +1771,9 @@ static const struct usb_device_id acm_ids[] = {
+ { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
+ .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
+ },
++ { USB_DEVICE(0xfff0, 0x0100), /* DATECS FP-2000 */
++ .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
++ },
+
+ { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
+ .driver_info = CLEAR_HALT_CONDITIONS,
+diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
+index 029fa26d2ac9..78f357b1a8fd 100644
+--- a/drivers/usb/core/hcd.c
++++ b/drivers/usb/core/hcd.c
+@@ -2397,6 +2397,8 @@ void usb_hc_died (struct usb_hcd *hcd)
+ }
+ if (usb_hcd_is_primary_hcd(hcd) && hcd->shared_hcd) {
+ hcd = hcd->shared_hcd;
++ clear_bit(HCD_FLAG_RH_RUNNING, &hcd->flags);
++ set_bit(HCD_FLAG_DEAD, &hcd->flags);
+ if (hcd->rh_registered) {
+ clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
+
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index e479c7d47a9f..fbf5c57b8251 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -4618,7 +4618,8 @@ hub_power_remaining (struct usb_hub *hub)
+ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
+ u16 portchange)
+ {
+- int status, i;
++ int status = -ENODEV;
++ int i;
+ unsigned unit_load;
+ struct usb_device *hdev = hub->hdev;
+ struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
+@@ -4822,9 +4823,10 @@ loop:
+
+ done:
+ hub_port_disable(hub, port1, 1);
+- if (hcd->driver->relinquish_port && !hub->hdev->parent)
+- hcd->driver->relinquish_port(hcd, port1);
+-
++ if (hcd->driver->relinquish_port && !hub->hdev->parent) {
++ if (status != -ENOTCONN && status != -ENODEV)
++ hcd->driver->relinquish_port(hcd, port1);
++ }
+ }
+
+ /* Handle physical or logical connection change events.
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 3116edfcdc18..574da2b4529c 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -150,6 +150,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* appletouch */
+ { USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME },
+
++ /* Genesys Logic hub, internally used by Moshi USB to Ethernet Adapter */
++ { USB_DEVICE(0x05e3, 0x0616), .driver_info = USB_QUIRK_NO_LPM },
++
+ /* Avision AV600U */
+ { USB_DEVICE(0x0638, 0x0a13), .driver_info =
+ USB_QUIRK_STRING_FETCH_255 },
+@@ -249,6 +252,7 @@ static const struct usb_device_id usb_amd_resume_quirk_list[] = {
+ { USB_DEVICE(0x093a, 0x2500), .driver_info = USB_QUIRK_RESET_RESUME },
+ { USB_DEVICE(0x093a, 0x2510), .driver_info = USB_QUIRK_RESET_RESUME },
+ { USB_DEVICE(0x093a, 0x2521), .driver_info = USB_QUIRK_RESET_RESUME },
++ { USB_DEVICE(0x03f0, 0x2b4a), .driver_info = USB_QUIRK_RESET_RESUME },
+
+ /* Logitech Optical Mouse M90/M100 */
+ { USB_DEVICE(0x046d, 0xc05a), .driver_info = USB_QUIRK_RESET_RESUME },
+diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
+index f7f35a36c09a..466640afa7be 100644
+--- a/drivers/usb/gadget/function/f_hid.c
++++ b/drivers/usb/gadget/function/f_hid.c
+@@ -544,7 +544,7 @@ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
+ }
+ status = usb_ep_enable(hidg->out_ep);
+ if (status < 0) {
+- ERROR(cdev, "Enable IN endpoint FAILED!\n");
++ ERROR(cdev, "Enable OUT endpoint FAILED!\n");
+ goto fail;
+ }
+ hidg->out_ep->driver_data = hidg;
+diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
+index f9400564cb72..03b9a372636f 100644
+--- a/drivers/usb/host/pci-quirks.c
++++ b/drivers/usb/host/pci-quirks.c
+@@ -89,6 +89,7 @@ enum amd_chipset_gen {
+ AMD_CHIPSET_HUDSON2,
+ AMD_CHIPSET_BOLTON,
+ AMD_CHIPSET_YANGTZE,
++ AMD_CHIPSET_TAISHAN,
+ AMD_CHIPSET_UNKNOWN,
+ };
+
+@@ -132,6 +133,11 @@ static int amd_chipset_sb_type_init(struct amd_chipset_info *pinfo)
+ pinfo->sb_type.gen = AMD_CHIPSET_SB700;
+ else if (rev >= 0x40 && rev <= 0x4f)
+ pinfo->sb_type.gen = AMD_CHIPSET_SB800;
++ }
++ pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
++ 0x145c, NULL);
++ if (pinfo->smbus_dev) {
++ pinfo->sb_type.gen = AMD_CHIPSET_TAISHAN;
+ } else {
+ pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+ PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
+@@ -251,11 +257,12 @@ int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *pdev)
+ {
+ /* Make sure amd chipset type has already been initialized */
+ usb_amd_find_chipset_info();
+- if (amd_chipset.sb_type.gen != AMD_CHIPSET_YANGTZE)
+- return 0;
+-
+- dev_dbg(&pdev->dev, "QUIRK: Enable AMD remote wakeup fix\n");
+- return 1;
++ if (amd_chipset.sb_type.gen == AMD_CHIPSET_YANGTZE ||
++ amd_chipset.sb_type.gen == AMD_CHIPSET_TAISHAN) {
++ dev_dbg(&pdev->dev, "QUIRK: Enable AMD remote wakeup fix\n");
++ return 1;
++ }
++ return 0;
+ }
+ EXPORT_SYMBOL_GPL(usb_hcd_amd_remote_wakeup_quirk);
+
+diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
+index 2dd322e92951..25b1cf0b6848 100644
+--- a/drivers/usb/host/xhci-hub.c
++++ b/drivers/usb/host/xhci-hub.c
+@@ -651,6 +651,9 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
+ clear_bit(wIndex, &bus_state->resuming_ports);
+
+ set_bit(wIndex, &bus_state->rexit_ports);
++
++ xhci_test_and_clear_bit(xhci, port_array, wIndex,
++ PORT_PLC);
+ xhci_set_link_state(xhci, port_array, wIndex,
+ XDEV_U0);
+
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index fbb77e2b288d..639419066ec4 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -789,13 +789,16 @@ static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci,
+ (ep->ep_state & EP_GETTING_NO_STREAMS)) {
+ int stream_id;
+
+- for (stream_id = 0; stream_id < ep->stream_info->num_streams;
++ for (stream_id = 1; stream_id < ep->stream_info->num_streams;
+ stream_id++) {
++ ring = ep->stream_info->stream_rings[stream_id];
++ if (!ring)
++ continue;
++
+ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+ "Killing URBs for slot ID %u, ep index %u, stream %u",
+- slot_id, ep_index, stream_id + 1);
+- xhci_kill_ring_urbs(xhci,
+- ep->stream_info->stream_rings[stream_id]);
++ slot_id, ep_index, stream_id);
++ xhci_kill_ring_urbs(xhci, ring);
+ }
+ } else {
+ ring = ep->ring;
+diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
+index 0f7e850fd4aa..61a898e4a010 100644
+--- a/drivers/usb/renesas_usbhs/common.c
++++ b/drivers/usb/renesas_usbhs/common.c
+@@ -731,8 +731,10 @@ static int usbhsc_resume(struct device *dev)
+ struct usbhs_priv *priv = dev_get_drvdata(dev);
+ struct platform_device *pdev = usbhs_priv_to_pdev(priv);
+
+- if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
++ if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
+ usbhsc_power_ctrl(priv, 1);
++ usbhs_mod_autonomy_mode(priv);
++ }
+
+ usbhs_platform_call(priv, phy_reset, pdev);
+
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index 69040e9069e0..31cd99f59a6a 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -133,6 +133,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x10C4, 0x8998) }, /* KCF Technologies PRN */
+ { USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */
+ { USB_DEVICE(0x10C4, 0x8A5E) }, /* CEL EM3588 ZigBee USB Stick Long Range */
++ { USB_DEVICE(0x10C4, 0x8B34) }, /* Qivicon ZigBee USB Radio Stick */
+ { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 5d841485bbe3..f08b35819666 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -2022,6 +2022,8 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff) }, /* D-Link DWM-158 */
+ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e19, 0xff), /* D-Link DWM-221 B1 */
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
++ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e35, 0xff), /* D-Link DWM-222 */
++ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x7e11, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/A3 */
+diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
+index 1db4b61bdf7b..a51b28379850 100644
+--- a/drivers/usb/serial/pl2303.c
++++ b/drivers/usb/serial/pl2303.c
+@@ -49,6 +49,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
+ { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
+ { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },
++ { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_UC485) },
+ { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID2) },
+ { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) },
+ { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) },
+diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
+index 09d9be88209e..3b5a15d1dc0d 100644
+--- a/drivers/usb/serial/pl2303.h
++++ b/drivers/usb/serial/pl2303.h
+@@ -27,6 +27,7 @@
+ #define ATEN_VENDOR_ID 0x0557
+ #define ATEN_VENDOR_ID2 0x0547
+ #define ATEN_PRODUCT_ID 0x2008
++#define ATEN_PRODUCT_UC485 0x2021
+ #define ATEN_PRODUCT_ID2 0x2118
+
+ #define IODATA_VENDOR_ID 0x04bb
+diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
+index 076178645ba4..45b18df9fef1 100644
+--- a/drivers/usb/storage/isd200.c
++++ b/drivers/usb/storage/isd200.c
+@@ -1522,8 +1522,11 @@ static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
+
+ /* Make sure driver was initialized */
+
+- if (us->extra == NULL)
++ if (us->extra == NULL) {
+ usb_stor_dbg(us, "ERROR Driver not initialized\n");
++ srb->result = DID_ERROR << 16;
++ return;
++ }
+
+ scsi_set_resid(srb, 0);
+ /* scsi_bufflen might change in protocol translation to ata */
+diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
+index 53341a77d89f..a37ed1e59e99 100644
+--- a/drivers/usb/storage/unusual_uas.h
++++ b/drivers/usb/storage/unusual_uas.h
+@@ -123,9 +123,9 @@ UNUSUAL_DEV(0x0bc2, 0xab2a, 0x0000, 0x9999,
+ /* Reported-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> */
+ UNUSUAL_DEV(0x13fd, 0x3940, 0x0000, 0x9999,
+ "Initio Corporation",
+- "",
++ "INIC-3069",
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+- US_FL_NO_ATA_1X),
++ US_FL_NO_ATA_1X | US_FL_IGNORE_RESIDUE),
+
+ /* Reported-by: Tom Arild Naess <tanaess@gmail.com> */
+ UNUSUAL_DEV(0x152d, 0x0539, 0x0000, 0x9999,
+diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
+index ae90cf8867b5..f85e3a17cf5a 100644
+--- a/drivers/vfio/pci/vfio_pci.c
++++ b/drivers/vfio/pci/vfio_pci.c
+@@ -902,6 +902,10 @@ static int vfio_pci_mmap(void *device_data, struct vm_area_struct *vma)
+ return ret;
+
+ vdev->barmap[index] = pci_iomap(pdev, index, 0);
++ if (!vdev->barmap[index]) {
++ pci_release_selected_regions(pdev, 1 << index);
++ return -ENOMEM;
++ }
+ }
+
+ vma->vm_private_data = vdev;
+diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c
+index 210db24d2204..4d39f7959adf 100644
+--- a/drivers/vfio/pci/vfio_pci_rdwr.c
++++ b/drivers/vfio/pci/vfio_pci_rdwr.c
+@@ -190,7 +190,10 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf,
+ if (!vdev->has_vga)
+ return -EINVAL;
+
+- switch (pos) {
++ if (pos > 0xbfffful)
++ return -EINVAL;
++
++ switch ((u32)pos) {
+ case 0xa0000 ... 0xbffff:
+ count = min(count, (size_t)(0xc0000 - pos));
+ iomem = ioremap_nocache(0xa0000, 0xbffff - 0xa0000 + 1);
+diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
+index e1278fe04b1e..8b2354536bbb 100644
+--- a/drivers/vfio/vfio.c
++++ b/drivers/vfio/vfio.c
+@@ -295,6 +295,34 @@ static void vfio_group_put(struct vfio_group *group)
+ kref_put_mutex(&group->kref, vfio_group_release, &vfio.group_lock);
+ }
+
++struct vfio_group_put_work {
++ struct work_struct work;
++ struct vfio_group *group;
++};
++
++static void vfio_group_put_bg(struct work_struct *work)
++{
++ struct vfio_group_put_work *do_work;
++
++ do_work = container_of(work, struct vfio_group_put_work, work);
++
++ vfio_group_put(do_work->group);
++ kfree(do_work);
++}
++
++static void vfio_group_schedule_put(struct vfio_group *group)
++{
++ struct vfio_group_put_work *do_work;
++
++ do_work = kmalloc(sizeof(*do_work), GFP_KERNEL);
++ if (WARN_ON(!do_work))
++ return;
++
++ INIT_WORK(&do_work->work, vfio_group_put_bg);
++ do_work->group = group;
++ schedule_work(&do_work->work);
++}
++
+ /* Assume group_lock or group reference is held */
+ static void vfio_group_get(struct vfio_group *group)
+ {
+@@ -601,7 +629,14 @@ static int vfio_iommu_group_notifier(struct notifier_block *nb,
+ break;
+ }
+
+- vfio_group_put(group);
++ /*
++ * If we're the last reference to the group, the group will be
++ * released, which includes unregistering the iommu group notifier.
++ * We hold a read-lock on that notifier list, unregistering needs
++ * a write-lock... deadlock. Release our reference asynchronously
++ * to avoid that situation.
++ */
++ vfio_group_schedule_put(group);
+ return NOTIFY_OK;
+ }
+
+@@ -1504,6 +1539,15 @@ void vfio_group_put_external_user(struct vfio_group *group)
+ }
+ EXPORT_SYMBOL_GPL(vfio_group_put_external_user);
+
++bool vfio_external_group_match_file(struct vfio_group *test_group,
++ struct file *filep)
++{
++ struct vfio_group *group = filep->private_data;
++
++ return (filep->f_op == &vfio_group_fops) && (group == test_group);
++}
++EXPORT_SYMBOL_GPL(vfio_external_group_match_file);
++
+ int vfio_external_user_iommu_id(struct vfio_group *group)
+ {
+ return iommu_group_id(group->iommu_group);
+diff --git a/drivers/video/fbdev/cobalt_lcdfb.c b/drivers/video/fbdev/cobalt_lcdfb.c
+index 07675d6f323e..d4530b54479c 100644
+--- a/drivers/video/fbdev/cobalt_lcdfb.c
++++ b/drivers/video/fbdev/cobalt_lcdfb.c
+@@ -350,6 +350,11 @@ static int cobalt_lcdfb_probe(struct platform_device *dev)
+ info->screen_size = resource_size(res);
+ info->screen_base = devm_ioremap(&dev->dev, res->start,
+ info->screen_size);
++ if (!info->screen_base) {
++ framebuffer_release(info);
++ return -ENOMEM;
++ }
++
+ info->fbops = &cobalt_lcd_fbops;
+ info->fix = cobalt_lcdfb_fix;
+ info->fix.smem_start = res->start;
+diff --git a/fs/ext4/file.c b/fs/ext4/file.c
+index ece4982ee593..f57cf1c42ca3 100644
+--- a/fs/ext4/file.c
++++ b/fs/ext4/file.c
+@@ -391,6 +391,8 @@ static int ext4_find_unwritten_pgoff(struct inode *inode,
+ lastoff = page_offset(page);
+ bh = head = page_buffers(page);
+ do {
++ if (lastoff + bh->b_size <= startoff)
++ goto next;
+ if (buffer_uptodate(bh) ||
+ buffer_unwritten(bh)) {
+ if (whence == SEEK_DATA)
+@@ -405,6 +407,7 @@ static int ext4_find_unwritten_pgoff(struct inode *inode,
+ unlock_page(page);
+ goto out;
+ }
++next:
+ lastoff += bh->b_size;
+ bh = bh->b_this_page;
+ } while (bh != head);
+diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
+index 0e783b9f7007..b63e308e2545 100644
+--- a/fs/ext4/resize.c
++++ b/fs/ext4/resize.c
+@@ -1932,7 +1932,8 @@ retry:
+ n_desc_blocks = o_desc_blocks +
+ le16_to_cpu(es->s_reserved_gdt_blocks);
+ n_group = n_desc_blocks * EXT4_DESC_PER_BLOCK(sb);
+- n_blocks_count = n_group * EXT4_BLOCKS_PER_GROUP(sb);
++ n_blocks_count = (ext4_fsblk_t)n_group *
++ EXT4_BLOCKS_PER_GROUP(sb);
+ n_group--; /* set to last group number */
+ }
+
+diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c
+index c5e4a1856a0f..4147d83e6fdd 100644
+--- a/fs/f2fs/acl.c
++++ b/fs/f2fs/acl.c
+@@ -213,7 +213,7 @@ static int __f2fs_set_acl(struct inode *inode, int type,
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS;
+- if (acl) {
++ if (acl && !ipage) {
+ error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
+ if (error)
+ return error;
+diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
+index 660183e9ab7c..f2ada269feb7 100644
+--- a/fs/f2fs/super.c
++++ b/fs/f2fs/super.c
+@@ -979,6 +979,8 @@ static int sanity_check_ckpt(struct f2fs_sb_info *sbi)
+ unsigned int total, fsmeta;
+ struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
+ struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
++ unsigned int main_segs, blocks_per_seg;
++ int i;
+
+ total = le32_to_cpu(raw_super->segment_count);
+ fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
+@@ -990,6 +992,20 @@ static int sanity_check_ckpt(struct f2fs_sb_info *sbi)
+ if (unlikely(fsmeta >= total))
+ return 1;
+
++ main_segs = le32_to_cpu(raw_super->segment_count_main);
++ blocks_per_seg = sbi->blocks_per_seg;
++
++ for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
++ if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
++ le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
++ return 1;
++ }
++ for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
++ if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
++ le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
++ return 1;
++ }
++
+ if (unlikely(f2fs_cp_error(sbi))) {
+ f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
+ return 1;
+diff --git a/fs/fuse/file.c b/fs/fuse/file.c
+index 1f03f0a36e35..cacf95ac49fe 100644
+--- a/fs/fuse/file.c
++++ b/fs/fuse/file.c
+@@ -46,7 +46,7 @@ struct fuse_file *fuse_file_alloc(struct fuse_conn *fc)
+ {
+ struct fuse_file *ff;
+
+- ff = kmalloc(sizeof(struct fuse_file), GFP_KERNEL);
++ ff = kzalloc(sizeof(struct fuse_file), GFP_KERNEL);
+ if (unlikely(!ff))
+ return NULL;
+
+diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
+index f31fd0dd92c6..b1daeafbea92 100644
+--- a/fs/nfs/Kconfig
++++ b/fs/nfs/Kconfig
+@@ -121,6 +121,7 @@ config PNFS_FILE_LAYOUT
+ config PNFS_BLOCK
+ tristate
+ depends on NFS_V4_1 && BLK_DEV_DM
++ depends on 64BIT || LBDAF
+ default NFS_V4
+
+ config PNFS_OBJLAYOUT
+diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
+index b6d97dfa9cb6..4227adce3e52 100644
+--- a/fs/nfs/dir.c
++++ b/fs/nfs/dir.c
+@@ -1154,11 +1154,13 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
+ /* Force a full look up iff the parent directory has changed */
+ if (!nfs_is_exclusive_create(dir, flags) &&
+ nfs_check_verifier(dir, dentry, flags & LOOKUP_RCU)) {
+-
+- if (nfs_lookup_verify_inode(inode, flags)) {
++ error = nfs_lookup_verify_inode(inode, flags);
++ if (error) {
+ if (flags & LOOKUP_RCU)
+ return -ECHILD;
+- goto out_zap_parent;
++ if (error == -ESTALE)
++ goto out_zap_parent;
++ goto out_error;
+ }
+ goto out_valid;
+ }
+@@ -1182,8 +1184,10 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
+ trace_nfs_lookup_revalidate_enter(dir, dentry, flags);
+ error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label);
+ trace_nfs_lookup_revalidate_exit(dir, dentry, flags, error);
+- if (error)
++ if (error == -ESTALE || error == -ENOENT)
+ goto out_bad;
++ if (error)
++ goto out_error;
+ if (nfs_compare_fh(NFS_FH(inode), fhandle))
+ goto out_bad;
+ if ((error = nfs_refresh_inode(inode, fattr)) != 0)
+diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+index b28fa4cbea52..a84dd247b13a 100644
+--- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c
++++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+@@ -30,6 +30,7 @@ void nfs4_ff_layout_free_deviceid(struct nfs4_ff_layout_ds *mirror_ds)
+ {
+ nfs4_print_deviceid(&mirror_ds->id_node.deviceid);
+ nfs4_pnfs_ds_put(mirror_ds->ds);
++ kfree(mirror_ds->ds_versions);
+ kfree_rcu(mirror_ds, id_node.rcu);
+ }
+
+diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
+index 723b8922d76b..8ddff9a72b34 100644
+--- a/fs/nfs/inode.c
++++ b/fs/nfs/inode.c
+@@ -1227,9 +1227,9 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
+ return 0;
+ /* Has the inode gone and changed behind our back? */
+ if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid)
+- return -EIO;
++ return -ESTALE;
+ if ((fattr->valid & NFS_ATTR_FATTR_TYPE) && (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
+- return -EIO;
++ return -ESTALE;
+
+ if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
+ inode->i_version != fattr->change_attr)
+diff --git a/fs/seq_file.c b/fs/seq_file.c
+index 4408057d1dc8..4dcf9d28f022 100644
+--- a/fs/seq_file.c
++++ b/fs/seq_file.c
+@@ -62,9 +62,10 @@ int seq_open(struct file *file, const struct seq_operations *op)
+ memset(p, 0, sizeof(*p));
+ mutex_init(&p->lock);
+ p->op = op;
+-#ifdef CONFIG_USER_NS
+- p->user_ns = file->f_cred->user_ns;
+-#endif
++
++ // No refcounting: the lifetime of 'p' is constrained
++ // to the lifetime of the file.
++ p->file = file;
+
+ /*
+ * Wrappers around seq_open(e.g. swaps_open) need to be
+diff --git a/fs/udf/inode.c b/fs/udf/inode.c
+index 78a40ef0c463..9635cd478cc9 100644
+--- a/fs/udf/inode.c
++++ b/fs/udf/inode.c
+@@ -1235,8 +1235,8 @@ int udf_setsize(struct inode *inode, loff_t newsize)
+ return err;
+ }
+ set_size:
+- truncate_setsize(inode, newsize);
+ up_write(&iinfo->i_data_sem);
++ truncate_setsize(inode, newsize);
+ } else {
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ down_write(&iinfo->i_data_sem);
+@@ -1253,9 +1253,9 @@ set_size:
+ udf_get_block);
+ if (err)
+ return err;
++ truncate_setsize(inode, newsize);
+ down_write(&iinfo->i_data_sem);
+ udf_clear_extent_cache(inode);
+- truncate_setsize(inode, newsize);
+ udf_truncate_extents(inode);
+ up_write(&iinfo->i_data_sem);
+ }
+diff --git a/include/linux/phy.h b/include/linux/phy.h
+index 685809835b5c..d164045e296c 100644
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -751,6 +751,10 @@ int genphy_read_status(struct phy_device *phydev);
+ int genphy_suspend(struct phy_device *phydev);
+ int genphy_resume(struct phy_device *phydev);
+ int genphy_soft_reset(struct phy_device *phydev);
++static inline int genphy_no_soft_reset(struct phy_device *phydev)
++{
++ return 0;
++}
+ void phy_driver_unregister(struct phy_driver *drv);
+ void phy_drivers_unregister(struct phy_driver *drv, int n);
+ int phy_driver_register(struct phy_driver *new_driver);
+diff --git a/include/linux/sched.h b/include/linux/sched.h
+index af99802ce7fe..b6c033430b15 100644
+--- a/include/linux/sched.h
++++ b/include/linux/sched.h
+@@ -774,6 +774,16 @@ struct signal_struct {
+
+ #define SIGNAL_UNKILLABLE 0x00000040 /* for init: ignore fatal signals */
+
++#define SIGNAL_STOP_MASK (SIGNAL_CLD_MASK | SIGNAL_STOP_STOPPED | \
++ SIGNAL_STOP_CONTINUED)
++
++static inline void signal_set_stop_flags(struct signal_struct *sig,
++ unsigned int flags)
++{
++ WARN_ON(sig->flags & (SIGNAL_GROUP_EXIT|SIGNAL_GROUP_COREDUMP));
++ sig->flags = (sig->flags & ~SIGNAL_STOP_MASK) | flags;
++}
++
+ /* If true, all threads except ->group_exit_task have pending SIGKILL */
+ static inline int signal_group_exit(const struct signal_struct *sig)
+ {
+diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
+index 7848473a5bc8..f36c3a27f7f6 100644
+--- a/include/linux/seq_file.h
++++ b/include/linux/seq_file.h
+@@ -7,13 +7,10 @@
+ #include <linux/mutex.h>
+ #include <linux/cpumask.h>
+ #include <linux/nodemask.h>
++#include <linux/fs.h>
++#include <linux/cred.h>
+
+ struct seq_operations;
+-struct file;
+-struct path;
+-struct inode;
+-struct dentry;
+-struct user_namespace;
+
+ struct seq_file {
+ char *buf;
+@@ -27,9 +24,7 @@ struct seq_file {
+ struct mutex lock;
+ const struct seq_operations *op;
+ int poll_event;
+-#ifdef CONFIG_USER_NS
+- struct user_namespace *user_ns;
+-#endif
++ const struct file *file;
+ void *private;
+ };
+
+@@ -141,7 +136,7 @@ int seq_put_decimal_ll(struct seq_file *m, char delimiter,
+ static inline struct user_namespace *seq_user_ns(struct seq_file *seq)
+ {
+ #ifdef CONFIG_USER_NS
+- return seq->user_ns;
++ return seq->file->f_cred->user_ns;
+ #else
+ extern struct user_namespace init_user_ns;
+ return &init_user_ns;
+diff --git a/include/linux/slab.h b/include/linux/slab.h
+index ffd24c830151..ef441d93cea0 100644
+--- a/include/linux/slab.h
++++ b/include/linux/slab.h
+@@ -185,7 +185,7 @@ size_t ksize(const void *);
+ * (PAGE_SIZE*2). Larger requests are passed to the page allocator.
+ */
+ #define KMALLOC_SHIFT_HIGH (PAGE_SHIFT + 1)
+-#define KMALLOC_SHIFT_MAX (MAX_ORDER + PAGE_SHIFT)
++#define KMALLOC_SHIFT_MAX (MAX_ORDER + PAGE_SHIFT - 1)
+ #ifndef KMALLOC_SHIFT_LOW
+ #define KMALLOC_SHIFT_LOW 3
+ #endif
+@@ -198,7 +198,7 @@ size_t ksize(const void *);
+ * be allocated from the same page.
+ */
+ #define KMALLOC_SHIFT_HIGH PAGE_SHIFT
+-#define KMALLOC_SHIFT_MAX 30
++#define KMALLOC_SHIFT_MAX (MAX_ORDER + PAGE_SHIFT - 1)
+ #ifndef KMALLOC_SHIFT_LOW
+ #define KMALLOC_SHIFT_LOW 3
+ #endif
+diff --git a/include/linux/vfio.h b/include/linux/vfio.h
+index ddb440975382..34851bf2e2c8 100644
+--- a/include/linux/vfio.h
++++ b/include/linux/vfio.h
+@@ -85,6 +85,8 @@ extern void vfio_unregister_iommu_driver(
+ */
+ extern struct vfio_group *vfio_group_get_external_user(struct file *filep);
+ extern void vfio_group_put_external_user(struct vfio_group *group);
++extern bool vfio_external_group_match_file(struct vfio_group *group,
++ struct file *filep);
+ extern int vfio_external_user_iommu_id(struct vfio_group *group);
+ extern long vfio_external_check_extension(struct vfio_group *group,
+ unsigned long arg);
+diff --git a/include/net/iw_handler.h b/include/net/iw_handler.h
+index e0f4109e64c6..c2aa73e5e6bb 100644
+--- a/include/net/iw_handler.h
++++ b/include/net/iw_handler.h
+@@ -556,7 +556,8 @@ iwe_stream_add_point(struct iw_request_info *info, char *stream, char *ends,
+ memcpy(stream + lcp_len,
+ ((char *) &iwe->u) + IW_EV_POINT_OFF,
+ IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
+- memcpy(stream + point_len, extra, iwe->u.data.length);
++ if (iwe->u.data.length && extra)
++ memcpy(stream + point_len, extra, iwe->u.data.length);
+ stream += event_len;
+ }
+ return stream;
+diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
+index ce13cf20f625..d33b17ba51d2 100644
+--- a/include/net/sctp/sctp.h
++++ b/include/net/sctp/sctp.h
+@@ -444,6 +444,8 @@ _sctp_walk_params((pos), (chunk), ntohs((chunk)->chunk_hdr.length), member)
+
+ #define _sctp_walk_params(pos, chunk, end, member)\
+ for (pos.v = chunk->member;\
++ (pos.v + offsetof(struct sctp_paramhdr, length) + sizeof(pos.p->length) <=\
++ (void *)chunk + end) &&\
+ pos.v <= (void *)chunk + end - ntohs(pos.p->length) &&\
+ ntohs(pos.p->length) >= sizeof(sctp_paramhdr_t);\
+ pos.v += WORD_ROUND(ntohs(pos.p->length)))
+@@ -454,6 +456,8 @@ _sctp_walk_errors((err), (chunk_hdr), ntohs((chunk_hdr)->length))
+ #define _sctp_walk_errors(err, chunk_hdr, end)\
+ for (err = (sctp_errhdr_t *)((void *)chunk_hdr + \
+ sizeof(sctp_chunkhdr_t));\
++ ((void *)err + offsetof(sctp_errhdr_t, length) + sizeof(err->length) <=\
++ (void *)chunk_hdr + end) &&\
+ (void *)err <= (void *)chunk_hdr + end - ntohs(err->length) &&\
+ ntohs(err->length) >= sizeof(sctp_errhdr_t); \
+ err = (sctp_errhdr_t *)((void *)err + WORD_ROUND(ntohs(err->length))))
+diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h
+index e37059c901e2..e12eec076cd5 100644
+--- a/include/target/iscsi/iscsi_target_core.h
++++ b/include/target/iscsi/iscsi_target_core.h
+@@ -785,6 +785,7 @@ struct iscsi_np {
+ int np_sock_type;
+ enum np_thread_state_table np_thread_state;
+ bool enabled;
++ atomic_t np_reset_count;
+ enum iscsi_timer_flags_table np_login_timer_flags;
+ u32 np_exports;
+ enum np_flags_table np_flags;
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 10e9eec3e228..e871080bc44e 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -6111,21 +6111,6 @@ static void perf_log_itrace_start(struct perf_event *event)
+ perf_output_end(&handle);
+ }
+
+-static bool sample_is_allowed(struct perf_event *event, struct pt_regs *regs)
+-{
+- /*
+- * Due to interrupt latency (AKA "skid"), we may enter the
+- * kernel before taking an overflow, even if the PMU is only
+- * counting user events.
+- * To avoid leaking information to userspace, we must always
+- * reject kernel samples when exclude_kernel is set.
+- */
+- if (event->attr.exclude_kernel && !user_mode(regs))
+- return false;
+-
+- return true;
+-}
+-
+ /*
+ * Generic event overflow handling, sampling.
+ */
+@@ -6172,12 +6157,6 @@ static int __perf_event_overflow(struct perf_event *event,
+ perf_adjust_period(event, delta, hwc->last_period, true);
+ }
+
+- /*
+- * For security, drop the skid kernel samples if necessary.
+- */
+- if (!sample_is_allowed(event, regs))
+- return ret;
+-
+ /*
+ * XXX event_limit might not quite work as expected on inherited
+ * events
+diff --git a/kernel/resource.c b/kernel/resource.c
+index a7c27cb71fc5..cbf725c24c3b 100644
+--- a/kernel/resource.c
++++ b/kernel/resource.c
+@@ -105,16 +105,25 @@ static int r_show(struct seq_file *m, void *v)
+ {
+ struct resource *root = m->private;
+ struct resource *r = v, *p;
++ unsigned long long start, end;
+ int width = root->end < 0x10000 ? 4 : 8;
+ int depth;
+
+ for (depth = 0, p = r; depth < MAX_IORES_LEVEL; depth++, p = p->parent)
+ if (p->parent == root)
+ break;
++
++ if (file_ns_capable(m->file, &init_user_ns, CAP_SYS_ADMIN)) {
++ start = r->start;
++ end = r->end;
++ } else {
++ start = end = 0;
++ }
++
+ seq_printf(m, "%*s%0*llx-%0*llx : %s\n",
+ depth * 2, "",
+- width, (unsigned long long) r->start,
+- width, (unsigned long long) r->end,
++ width, start,
++ width, end,
+ r->name ? r->name : "<BAD>");
+ return 0;
+ }
+diff --git a/kernel/signal.c b/kernel/signal.c
+index 0206be728dac..525a4cda5598 100644
+--- a/kernel/signal.c
++++ b/kernel/signal.c
+@@ -346,7 +346,7 @@ static bool task_participate_group_stop(struct task_struct *task)
+ * fresh group stop. Read comment in do_signal_stop() for details.
+ */
+ if (!sig->group_stop_count && !(sig->flags & SIGNAL_STOP_STOPPED)) {
+- sig->flags = SIGNAL_STOP_STOPPED;
++ signal_set_stop_flags(sig, SIGNAL_STOP_STOPPED);
+ return true;
+ }
+ return false;
+@@ -888,7 +888,7 @@ static bool prepare_signal(int sig, struct task_struct *p, bool force)
+ * will take ->siglock, notice SIGNAL_CLD_MASK, and
+ * notify its parent. See get_signal_to_deliver().
+ */
+- signal->flags = why | SIGNAL_STOP_CONTINUED;
++ signal_set_stop_flags(signal, why | SIGNAL_STOP_CONTINUED);
+ signal->group_stop_count = 0;
+ signal->group_exit_code = 0;
+ }
+diff --git a/kernel/workqueue.c b/kernel/workqueue.c
+index d0efe9295a0e..9cdf3bfc9178 100644
+--- a/kernel/workqueue.c
++++ b/kernel/workqueue.c
+@@ -3854,6 +3854,16 @@ struct workqueue_struct *__alloc_workqueue_key(const char *fmt,
+ struct workqueue_struct *wq;
+ struct pool_workqueue *pwq;
+
++ /*
++ * Unbound && max_active == 1 used to imply ordered, which is no
++ * longer the case on NUMA machines due to per-node pools. While
++ * alloc_ordered_workqueue() is the right way to create an ordered
++ * workqueue, keep the previous behavior to avoid subtle breakages
++ * on NUMA.
++ */
++ if ((flags & WQ_UNBOUND) && max_active == 1)
++ flags |= __WQ_ORDERED;
++
+ /* see the comment above the definition of WQ_POWER_EFFICIENT */
+ if ((flags & WQ_POWER_EFFICIENT) && wq_power_efficient)
+ flags |= WQ_UNBOUND;
+diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
+index ba2b0c87e65b..c986a6198b0e 100644
+--- a/lib/Kconfig.debug
++++ b/lib/Kconfig.debug
+@@ -145,7 +145,7 @@ config DEBUG_INFO_REDUCED
+
+ config DEBUG_INFO_SPLIT
+ bool "Produce split debuginfo in .dwo files"
+- depends on DEBUG_INFO
++ depends on DEBUG_INFO && !FRV
+ help
+ Generate debug info into separate .dwo files. This significantly
+ reduces the build directory size for builds with DEBUG_INFO,
+diff --git a/mm/mempool.c b/mm/mempool.c
+index 2cc08de8b1db..70cccdcff860 100644
+--- a/mm/mempool.c
++++ b/mm/mempool.c
+@@ -135,8 +135,8 @@ static void *remove_element(mempool_t *pool)
+ void *element = pool->elements[--pool->curr_nr];
+
+ BUG_ON(pool->curr_nr < 0);
+- check_element(pool, element);
+ kasan_unpoison_element(pool, element);
++ check_element(pool, element);
+ return element;
+ }
+
+diff --git a/mm/page_alloc.c b/mm/page_alloc.c
+index 4f1ff71074c7..35bda77211ea 100644
+--- a/mm/page_alloc.c
++++ b/mm/page_alloc.c
+@@ -1106,14 +1106,14 @@ int move_freepages(struct zone *zone,
+ #endif
+
+ for (page = start_page; page <= end_page;) {
+- /* Make sure we are not inadvertently changing nodes */
+- VM_BUG_ON_PAGE(page_to_nid(page) != zone_to_nid(zone), page);
+-
+ if (!pfn_valid_within(page_to_pfn(page))) {
+ page++;
+ continue;
+ }
+
++ /* Make sure we are not inadvertently changing nodes */
++ VM_BUG_ON_PAGE(page_to_nid(page) != zone_to_nid(zone), page);
++
+ if (!PageBuddy(page)) {
+ page++;
+ continue;
+@@ -5555,8 +5555,8 @@ unsigned long free_reserved_area(void *start, void *end, int poison, char *s)
+ }
+
+ if (pages && s)
+- pr_info("Freeing %s memory: %ldK (%p - %p)\n",
+- s, pages << (PAGE_SHIFT - 10), start, end);
++ pr_info("Freeing %s memory: %ldK\n",
++ s, pages << (PAGE_SHIFT - 10));
+
+ return pages;
+ }
+@@ -6513,7 +6513,7 @@ int alloc_contig_range(unsigned long start, unsigned long end,
+
+ /* Make sure the range is really isolated. */
+ if (test_pages_isolated(outer_start, end, false)) {
+- pr_info("%s: [%lx, %lx) PFNs busy\n",
++ pr_info_ratelimited("%s: [%lx, %lx) PFNs busy\n",
+ __func__, outer_start, end);
+ ret = -EBUSY;
+ goto done;
+diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
+index d45e590e8f10..dfecba30d83a 100644
+--- a/net/8021q/vlan.c
++++ b/net/8021q/vlan.c
+@@ -292,6 +292,10 @@ static void vlan_sync_address(struct net_device *dev,
+ if (ether_addr_equal(vlan->real_dev_addr, dev->dev_addr))
+ return;
+
++ /* vlan continues to inherit address of lower device */
++ if (vlan_dev_inherit_address(vlandev, dev))
++ goto out;
++
+ /* vlan address was different from the old address and is equal to
+ * the new address */
+ if (!ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) &&
+@@ -304,6 +308,7 @@ static void vlan_sync_address(struct net_device *dev,
+ !ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
+ dev_uc_add(dev, vlandev->dev_addr);
+
++out:
+ ether_addr_copy(vlan->real_dev_addr, dev->dev_addr);
+ }
+
+diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
+index 9d010a09ab98..cc1557978066 100644
+--- a/net/8021q/vlan.h
++++ b/net/8021q/vlan.h
+@@ -109,6 +109,8 @@ int vlan_check_real_dev(struct net_device *real_dev,
+ void vlan_setup(struct net_device *dev);
+ int register_vlan_dev(struct net_device *dev);
+ void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
++bool vlan_dev_inherit_address(struct net_device *dev,
++ struct net_device *real_dev);
+
+ static inline u32 vlan_get_ingress_priority(struct net_device *dev,
+ u16 vlan_tci)
+diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
+index 01d7ba840df8..93010f34c200 100644
+--- a/net/8021q/vlan_dev.c
++++ b/net/8021q/vlan_dev.c
+@@ -244,6 +244,17 @@ void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
+ strncpy(result, vlan_dev_priv(dev)->real_dev->name, 23);
+ }
+
++bool vlan_dev_inherit_address(struct net_device *dev,
++ struct net_device *real_dev)
++{
++ if (dev->addr_assign_type != NET_ADDR_STOLEN)
++ return false;
++
++ ether_addr_copy(dev->dev_addr, real_dev->dev_addr);
++ call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
++ return true;
++}
++
+ static int vlan_dev_open(struct net_device *dev)
+ {
+ struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+@@ -254,7 +265,8 @@ static int vlan_dev_open(struct net_device *dev)
+ !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
+ return -ENETDOWN;
+
+- if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr)) {
++ if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) &&
++ !vlan_dev_inherit_address(dev, real_dev)) {
+ err = dev_uc_add(real_dev, dev->dev_addr);
+ if (err < 0)
+ goto out;
+@@ -558,8 +570,10 @@ static int vlan_dev_init(struct net_device *dev)
+ /* ipv6 shared card related stuff */
+ dev->dev_id = real_dev->dev_id;
+
+- if (is_zero_ether_addr(dev->dev_addr))
+- eth_hw_addr_inherit(dev, real_dev);
++ if (is_zero_ether_addr(dev->dev_addr)) {
++ ether_addr_copy(dev->dev_addr, real_dev->dev_addr);
++ dev->addr_assign_type = NET_ADDR_STOLEN;
++ }
+ if (is_zero_ether_addr(dev->broadcast))
+ memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
+
+diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
+index 69ad5091e2ce..e4b56fcb5d4e 100644
+--- a/net/bluetooth/smp.c
++++ b/net/bluetooth/smp.c
+@@ -23,6 +23,7 @@
+ #include <linux/debugfs.h>
+ #include <linux/crypto.h>
+ #include <linux/scatterlist.h>
++#include <crypto/algapi.h>
+ #include <crypto/b128ops.h>
+
+ #include <net/bluetooth/bluetooth.h>
+@@ -506,7 +507,7 @@ bool smp_irk_matches(struct hci_dev *hdev, const u8 irk[16],
+ if (err)
+ return false;
+
+- return !memcmp(bdaddr->b, hash, 3);
++ return !crypto_memneq(bdaddr->b, hash, 3);
+ }
+
+ int smp_generate_rpa(struct hci_dev *hdev, const u8 irk[16], bdaddr_t *rpa)
+@@ -559,7 +560,7 @@ int smp_generate_oob(struct hci_dev *hdev, u8 hash[16], u8 rand[16])
+ /* This is unlikely, but we need to check that
+ * we didn't accidentially generate a debug key.
+ */
+- if (memcmp(smp->local_sk, debug_sk, 32))
++ if (crypto_memneq(smp->local_sk, debug_sk, 32))
+ break;
+ }
+ smp->debug_key = false;
+@@ -973,7 +974,7 @@ static u8 smp_random(struct smp_chan *smp)
+ if (ret)
+ return SMP_UNSPECIFIED;
+
+- if (memcmp(smp->pcnf, confirm, sizeof(smp->pcnf)) != 0) {
++ if (crypto_memneq(smp->pcnf, confirm, sizeof(smp->pcnf))) {
+ BT_ERR("Pairing failed (confirmation values mismatch)");
+ return SMP_CONFIRM_FAILED;
+ }
+@@ -1490,7 +1491,7 @@ static u8 sc_passkey_round(struct smp_chan *smp, u8 smp_op)
+ smp->rrnd, r, cfm))
+ return SMP_UNSPECIFIED;
+
+- if (memcmp(smp->pcnf, cfm, 16))
++ if (crypto_memneq(smp->pcnf, cfm, 16))
+ return SMP_CONFIRM_FAILED;
+
+ smp->passkey_round++;
+@@ -1874,7 +1875,7 @@ static u8 sc_send_public_key(struct smp_chan *smp)
+ /* This is unlikely, but we need to check that
+ * we didn't accidentially generate a debug key.
+ */
+- if (memcmp(smp->local_sk, debug_sk, 32))
++ if (crypto_memneq(smp->local_sk, debug_sk, 32))
+ break;
+ }
+ }
+@@ -2139,7 +2140,7 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb)
+ if (err)
+ return SMP_UNSPECIFIED;
+
+- if (memcmp(smp->pcnf, cfm, 16))
++ if (crypto_memneq(smp->pcnf, cfm, 16))
+ return SMP_CONFIRM_FAILED;
+ } else {
+ smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd),
+@@ -2594,7 +2595,7 @@ static int smp_cmd_public_key(struct l2cap_conn *conn, struct sk_buff *skb)
+ if (err)
+ return SMP_UNSPECIFIED;
+
+- if (memcmp(cfm.confirm_val, smp->pcnf, 16))
++ if (crypto_memneq(cfm.confirm_val, smp->pcnf, 16))
+ return SMP_CONFIRM_FAILED;
+ }
+
+@@ -2627,7 +2628,7 @@ static int smp_cmd_public_key(struct l2cap_conn *conn, struct sk_buff *skb)
+ else
+ hcon->pending_sec_level = BT_SECURITY_FIPS;
+
+- if (!memcmp(debug_pk, smp->remote_pk, 64))
++ if (!crypto_memneq(debug_pk, smp->remote_pk, 64))
+ set_bit(SMP_FLAG_DEBUG_KEY, &smp->flags);
+
+ if (smp->method == DSP_PASSKEY) {
+@@ -2726,7 +2727,7 @@ static int smp_cmd_dhkey_check(struct l2cap_conn *conn, struct sk_buff *skb)
+ if (err)
+ return SMP_UNSPECIFIED;
+
+- if (memcmp(check->e, e, 16))
++ if (crypto_memneq(check->e, e, 16))
+ return SMP_DHKEY_CHECK_FAILED;
+
+ if (!hcon->out) {
+@@ -3336,7 +3337,7 @@ static int __init test_ah(struct crypto_blkcipher *tfm_aes)
+ if (err)
+ return err;
+
+- if (memcmp(res, exp, 3))
++ if (crypto_memneq(res, exp, 3))
+ return -EINVAL;
+
+ return 0;
+@@ -3366,7 +3367,7 @@ static int __init test_c1(struct crypto_blkcipher *tfm_aes)
+ if (err)
+ return err;
+
+- if (memcmp(res, exp, 16))
++ if (crypto_memneq(res, exp, 16))
+ return -EINVAL;
+
+ return 0;
+@@ -3391,7 +3392,7 @@ static int __init test_s1(struct crypto_blkcipher *tfm_aes)
+ if (err)
+ return err;
+
+- if (memcmp(res, exp, 16))
++ if (crypto_memneq(res, exp, 16))
+ return -EINVAL;
+
+ return 0;
+@@ -3423,7 +3424,7 @@ static int __init test_f4(struct crypto_hash *tfm_cmac)
+ if (err)
+ return err;
+
+- if (memcmp(res, exp, 16))
++ if (crypto_memneq(res, exp, 16))
+ return -EINVAL;
+
+ return 0;
+@@ -3457,10 +3458,10 @@ static int __init test_f5(struct crypto_hash *tfm_cmac)
+ if (err)
+ return err;
+
+- if (memcmp(mackey, exp_mackey, 16))
++ if (crypto_memneq(mackey, exp_mackey, 16))
+ return -EINVAL;
+
+- if (memcmp(ltk, exp_ltk, 16))
++ if (crypto_memneq(ltk, exp_ltk, 16))
+ return -EINVAL;
+
+ return 0;
+@@ -3493,7 +3494,7 @@ static int __init test_f6(struct crypto_hash *tfm_cmac)
+ if (err)
+ return err;
+
+- if (memcmp(res, exp, 16))
++ if (crypto_memneq(res, exp, 16))
+ return -EINVAL;
+
+ return 0;
+@@ -3547,7 +3548,7 @@ static int __init test_h6(struct crypto_hash *tfm_cmac)
+ if (err)
+ return err;
+
+- if (memcmp(res, exp, 16))
++ if (crypto_memneq(res, exp, 16))
+ return -EINVAL;
+
+ return 0;
+diff --git a/net/core/dev.c b/net/core/dev.c
+index bd47736b689e..bb711e5e345b 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -2465,9 +2465,10 @@ EXPORT_SYMBOL(skb_mac_gso_segment);
+ static inline bool skb_needs_check(struct sk_buff *skb, bool tx_path)
+ {
+ if (tx_path)
+- return skb->ip_summed != CHECKSUM_PARTIAL;
+- else
+- return skb->ip_summed == CHECKSUM_NONE;
++ return skb->ip_summed != CHECKSUM_PARTIAL &&
++ skb->ip_summed != CHECKSUM_UNNECESSARY;
++
++ return skb->ip_summed == CHECKSUM_NONE;
+ }
+
+ /**
+@@ -2486,11 +2487,12 @@ static inline bool skb_needs_check(struct sk_buff *skb, bool tx_path)
+ struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
+ netdev_features_t features, bool tx_path)
+ {
++ struct sk_buff *segs;
++
+ if (unlikely(skb_needs_check(skb, tx_path))) {
+ int err;
+
+- skb_warn_bad_offload(skb);
+-
++ /* We're going to init ->check field in TCP or UDP header */
+ err = skb_cow_head(skb, 0);
+ if (err < 0)
+ return ERR_PTR(err);
+@@ -2505,7 +2507,12 @@ struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
+ skb_reset_mac_header(skb);
+ skb_reset_mac_len(skb);
+
+- return skb_mac_gso_segment(skb, features);
++ segs = skb_mac_gso_segment(skb, features);
++
++ if (unlikely(skb_needs_check(skb, tx_path)))
++ skb_warn_bad_offload(skb);
++
++ return segs;
+ }
+ EXPORT_SYMBOL(__skb_gso_segment);
+
+diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
+index b94b1d293506..151e047ce072 100644
+--- a/net/core/dev_ioctl.c
++++ b/net/core/dev_ioctl.c
+@@ -28,6 +28,7 @@ static int dev_ifname(struct net *net, struct ifreq __user *arg)
+
+ if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
+ return -EFAULT;
++ ifr.ifr_name[IFNAMSIZ-1] = 0;
+
+ error = netdev_get_name(net, ifr.ifr_name, ifr.ifr_ifindex);
+ if (error)
+diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
+index 7a0d98628137..3936683486e9 100644
+--- a/net/core/rtnetlink.c
++++ b/net/core/rtnetlink.c
+@@ -1628,7 +1628,8 @@ static int do_setlink(const struct sk_buff *skb,
+ struct sockaddr *sa;
+ int len;
+
+- len = sizeof(sa_family_t) + dev->addr_len;
++ len = sizeof(sa_family_t) + max_t(size_t, dev->addr_len,
++ sizeof(*sa));
+ sa = kmalloc(len, GFP_KERNEL);
+ if (!sa) {
+ err = -ENOMEM;
+diff --git a/net/dccp/feat.c b/net/dccp/feat.c
+index 1704948e6a12..f227f002c73d 100644
+--- a/net/dccp/feat.c
++++ b/net/dccp/feat.c
+@@ -1471,9 +1471,12 @@ int dccp_feat_init(struct sock *sk)
+ * singleton values (which always leads to failure).
+ * These settings can still (later) be overridden via sockopts.
+ */
+- if (ccid_get_builtin_ccids(&tx.val, &tx.len) ||
+- ccid_get_builtin_ccids(&rx.val, &rx.len))
++ if (ccid_get_builtin_ccids(&tx.val, &tx.len))
+ return -ENOBUFS;
++ if (ccid_get_builtin_ccids(&rx.val, &rx.len)) {
++ kfree(tx.val);
++ return -ENOBUFS;
++ }
+
+ if (!dccp_feat_prefer(sysctl_dccp_tx_ccid, tx.val, tx.len) ||
+ !dccp_feat_prefer(sysctl_dccp_rx_ccid, rx.val, rx.len))
+diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
+index ccf4c5629b3c..fd7ac7895c38 100644
+--- a/net/dccp/ipv4.c
++++ b/net/dccp/ipv4.c
+@@ -661,6 +661,7 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
+ goto drop_and_free;
+
+ inet_csk_reqsk_queue_hash_add(sk, req, DCCP_TIMEOUT_INIT);
++ reqsk_put(req);
+ return 0;
+
+ drop_and_free:
+diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
+index 513b6aabc5b7..765909ba781e 100644
+--- a/net/ipv4/fib_frontend.c
++++ b/net/ipv4/fib_frontend.c
+@@ -1247,13 +1247,14 @@ static struct pernet_operations fib_net_ops = {
+
+ void __init ip_fib_init(void)
+ {
+- rtnl_register(PF_INET, RTM_NEWROUTE, inet_rtm_newroute, NULL, NULL);
+- rtnl_register(PF_INET, RTM_DELROUTE, inet_rtm_delroute, NULL, NULL);
+- rtnl_register(PF_INET, RTM_GETROUTE, NULL, inet_dump_fib, NULL);
++ fib_trie_init();
+
+ register_pernet_subsys(&fib_net_ops);
++
+ register_netdevice_notifier(&fib_netdev_notifier);
+ register_inetaddr_notifier(&fib_inetaddr_notifier);
+
+- fib_trie_init();
++ rtnl_register(PF_INET, RTM_NEWROUTE, inet_rtm_newroute, NULL, NULL);
++ rtnl_register(PF_INET, RTM_DELROUTE, inet_rtm_delroute, NULL, NULL);
++ rtnl_register(PF_INET, RTM_GETROUTE, NULL, inet_dump_fib, NULL);
+ }
+diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
+index 51573f8a39bc..adbb28b39413 100644
+--- a/net/ipv4/ip_output.c
++++ b/net/ipv4/ip_output.c
+@@ -891,7 +891,7 @@ static int __ip_append_data(struct sock *sk,
+ csummode = CHECKSUM_PARTIAL;
+
+ cork->length += length;
+- if (((length > mtu) || (skb && skb_is_gso(skb))) &&
++ if ((((length + fragheaderlen) > mtu) || (skb && skb_is_gso(skb))) &&
+ (sk->sk_protocol == IPPROTO_UDP) &&
+ (rt->dst.dev->features & NETIF_F_UFO) && !rt->dst.header_len &&
+ (sk->sk_type == SOCK_DGRAM) && !sk->sk_no_check_tx) {
+diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
+index 4a3a17ff046d..767ee7471c9b 100644
+--- a/net/ipv4/tcp_input.c
++++ b/net/ipv4/tcp_input.c
+@@ -2536,8 +2536,8 @@ static inline void tcp_end_cwnd_reduction(struct sock *sk)
+ struct tcp_sock *tp = tcp_sk(sk);
+
+ /* Reset cwnd to ssthresh in CWR or Recovery (unless it's undone) */
+- if (inet_csk(sk)->icsk_ca_state == TCP_CA_CWR ||
+- (tp->undo_marker && tp->snd_ssthresh < TCP_INFINITE_SSTHRESH)) {
++ if (tp->snd_ssthresh < TCP_INFINITE_SSTHRESH &&
++ (inet_csk(sk)->icsk_ca_state == TCP_CA_CWR || tp->undo_marker)) {
+ tp->snd_cwnd = tp->snd_ssthresh;
+ tp->snd_cwnd_stamp = tcp_time_stamp;
+ }
+diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
+index dfcab88c3e74..8f27dce93f71 100644
+--- a/net/ipv4/udp_offload.c
++++ b/net/ipv4/udp_offload.c
+@@ -231,7 +231,7 @@ static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
+ if (uh->check == 0)
+ uh->check = CSUM_MANGLED_0;
+
+- skb->ip_summed = CHECKSUM_NONE;
++ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ /* Fragment the skb. IP headers of the fragments are updated in
+ * inet_gso_segment()
+diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
+index eefb8759cfa4..29a1ffa72cd0 100644
+--- a/net/ipv6/ip6_output.c
++++ b/net/ipv6/ip6_output.c
+@@ -1340,7 +1340,7 @@ emsgsize:
+ */
+
+ cork->length += length;
+- if (((length > mtu) ||
++ if ((((length + fragheaderlen) > mtu) ||
+ (skb && skb_is_gso(skb))) &&
+ (sk->sk_protocol == IPPROTO_UDP) &&
+ (rt->dst.dev->features & NETIF_F_UFO) &&
+diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
+index 3f6ee4138cab..292ef2e584db 100644
+--- a/net/ipv6/output_core.c
++++ b/net/ipv6/output_core.c
+@@ -76,7 +76,7 @@ EXPORT_SYMBOL(ipv6_select_ident);
+
+ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
+ {
+- u16 offset = sizeof(struct ipv6hdr);
++ unsigned int offset = sizeof(struct ipv6hdr);
+ unsigned int packet_len = skb_tail_pointer(skb) -
+ skb_network_header(skb);
+ int found_rhdr = 0;
+@@ -84,6 +84,7 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
+
+ while (offset <= packet_len) {
+ struct ipv6_opt_hdr *exthdr;
++ unsigned int len;
+
+ switch (**nexthdr) {
+
+@@ -109,7 +110,10 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
+
+ exthdr = (struct ipv6_opt_hdr *)(skb_network_header(skb) +
+ offset);
+- offset += ipv6_optlen(exthdr);
++ len = ipv6_optlen(exthdr);
++ if (len + offset >= IPV6_MAXPLEN)
++ return -EINVAL;
++ offset += len;
+ *nexthdr = &exthdr->nexthdr;
+ }
+
+diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
+index 01582966ffa0..2e3c12eeca07 100644
+--- a/net/ipv6/udp_offload.c
++++ b/net/ipv6/udp_offload.c
+@@ -86,7 +86,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
+ if (uh->check == 0)
+ uh->check = CSUM_MANGLED_0;
+
+- skb->ip_summed = CHECKSUM_NONE;
++ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ /* Check if there is enough headroom to insert fragment header. */
+ tnl_hlen = skb_tnl_header_len(skb);
+diff --git a/net/key/af_key.c b/net/key/af_key.c
+index 9a556e434f59..39c78c9e1c68 100644
+--- a/net/key/af_key.c
++++ b/net/key/af_key.c
+@@ -63,8 +63,13 @@ struct pfkey_sock {
+ } u;
+ struct sk_buff *skb;
+ } dump;
++ struct mutex dump_lock;
+ };
+
++static int parse_sockaddr_pair(struct sockaddr *sa, int ext_len,
++ xfrm_address_t *saddr, xfrm_address_t *daddr,
++ u16 *family);
++
+ static inline struct pfkey_sock *pfkey_sk(struct sock *sk)
+ {
+ return (struct pfkey_sock *)sk;
+@@ -139,6 +144,7 @@ static int pfkey_create(struct net *net, struct socket *sock, int protocol,
+ {
+ struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
+ struct sock *sk;
++ struct pfkey_sock *pfk;
+ int err;
+
+ if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+@@ -153,6 +159,9 @@ static int pfkey_create(struct net *net, struct socket *sock, int protocol,
+ if (sk == NULL)
+ goto out;
+
++ pfk = pfkey_sk(sk);
++ mutex_init(&pfk->dump_lock);
++
+ sock->ops = &pfkey_ops;
+ sock_init_data(sock, sk);
+
+@@ -281,13 +290,23 @@ static int pfkey_do_dump(struct pfkey_sock *pfk)
+ struct sadb_msg *hdr;
+ int rc;
+
++ mutex_lock(&pfk->dump_lock);
++ if (!pfk->dump.dump) {
++ rc = 0;
++ goto out;
++ }
++
+ rc = pfk->dump.dump(pfk);
+- if (rc == -ENOBUFS)
+- return 0;
++ if (rc == -ENOBUFS) {
++ rc = 0;
++ goto out;
++ }
+
+ if (pfk->dump.skb) {
+- if (!pfkey_can_dump(&pfk->sk))
+- return 0;
++ if (!pfkey_can_dump(&pfk->sk)) {
++ rc = 0;
++ goto out;
++ }
+
+ hdr = (struct sadb_msg *) pfk->dump.skb->data;
+ hdr->sadb_msg_seq = 0;
+@@ -298,6 +317,9 @@ static int pfkey_do_dump(struct pfkey_sock *pfk)
+ }
+
+ pfkey_terminate_dump(pfk);
++
++out:
++ mutex_unlock(&pfk->dump_lock);
+ return rc;
+ }
+
+@@ -1801,19 +1823,26 @@ static int pfkey_dump(struct sock *sk, struct sk_buff *skb, const struct sadb_ms
+ struct xfrm_address_filter *filter = NULL;
+ struct pfkey_sock *pfk = pfkey_sk(sk);
+
+- if (pfk->dump.dump != NULL)
++ mutex_lock(&pfk->dump_lock);
++ if (pfk->dump.dump != NULL) {
++ mutex_unlock(&pfk->dump_lock);
+ return -EBUSY;
++ }
+
+ proto = pfkey_satype2proto(hdr->sadb_msg_satype);
+- if (proto == 0)
++ if (proto == 0) {
++ mutex_unlock(&pfk->dump_lock);
+ return -EINVAL;
++ }
+
+ if (ext_hdrs[SADB_X_EXT_FILTER - 1]) {
+ struct sadb_x_filter *xfilter = ext_hdrs[SADB_X_EXT_FILTER - 1];
+
+ filter = kmalloc(sizeof(*filter), GFP_KERNEL);
+- if (filter == NULL)
++ if (filter == NULL) {
++ mutex_unlock(&pfk->dump_lock);
+ return -ENOMEM;
++ }
+
+ memcpy(&filter->saddr, &xfilter->sadb_x_filter_saddr,
+ sizeof(xfrm_address_t));
+@@ -1829,6 +1858,7 @@ static int pfkey_dump(struct sock *sk, struct sk_buff *skb, const struct sadb_ms
+ pfk->dump.dump = pfkey_dump_sa;
+ pfk->dump.done = pfkey_dump_sa_done;
+ xfrm_state_walk_init(&pfk->dump.u.state, proto, filter);
++ mutex_unlock(&pfk->dump_lock);
+
+ return pfkey_do_dump(pfk);
+ }
+@@ -1921,19 +1951,14 @@ parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)
+
+ /* addresses present only in tunnel mode */
+ if (t->mode == XFRM_MODE_TUNNEL) {
+- u8 *sa = (u8 *) (rq + 1);
+- int family, socklen;
++ int err;
+
+- family = pfkey_sockaddr_extract((struct sockaddr *)sa,
+- &t->saddr);
+- if (!family)
+- return -EINVAL;
+-
+- socklen = pfkey_sockaddr_len(family);
+- if (pfkey_sockaddr_extract((struct sockaddr *)(sa + socklen),
+- &t->id.daddr) != family)
+- return -EINVAL;
+- t->encap_family = family;
++ err = parse_sockaddr_pair(
++ (struct sockaddr *)(rq + 1),
++ rq->sadb_x_ipsecrequest_len - sizeof(*rq),
++ &t->saddr, &t->id.daddr, &t->encap_family);
++ if (err)
++ return err;
+ } else
+ t->encap_family = xp->family;
+
+@@ -1953,7 +1978,11 @@ parse_ipsecrequests(struct xfrm_policy *xp, struct sadb_x_policy *pol)
+ if (pol->sadb_x_policy_len * 8 < sizeof(struct sadb_x_policy))
+ return -EINVAL;
+
+- while (len >= sizeof(struct sadb_x_ipsecrequest)) {
++ while (len >= sizeof(*rq)) {
++ if (len < rq->sadb_x_ipsecrequest_len ||
++ rq->sadb_x_ipsecrequest_len < sizeof(*rq))
++ return -EINVAL;
++
+ if ((err = parse_ipsecrequest(xp, rq)) < 0)
+ return err;
+ len -= rq->sadb_x_ipsecrequest_len;
+@@ -2416,7 +2445,6 @@ out:
+ return err;
+ }
+
+-#ifdef CONFIG_NET_KEY_MIGRATE
+ static int pfkey_sockaddr_pair_size(sa_family_t family)
+ {
+ return PFKEY_ALIGN8(pfkey_sockaddr_len(family) * 2);
+@@ -2428,7 +2456,7 @@ static int parse_sockaddr_pair(struct sockaddr *sa, int ext_len,
+ {
+ int af, socklen;
+
+- if (ext_len < pfkey_sockaddr_pair_size(sa->sa_family))
++ if (ext_len < 2 || ext_len < pfkey_sockaddr_pair_size(sa->sa_family))
+ return -EINVAL;
+
+ af = pfkey_sockaddr_extract(sa, saddr);
+@@ -2444,6 +2472,7 @@ static int parse_sockaddr_pair(struct sockaddr *sa, int ext_len,
+ return 0;
+ }
+
++#ifdef CONFIG_NET_KEY_MIGRATE
+ static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
+ struct xfrm_migrate *m)
+ {
+@@ -2451,13 +2480,14 @@ static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
+ struct sadb_x_ipsecrequest *rq2;
+ int mode;
+
+- if (len <= sizeof(struct sadb_x_ipsecrequest) ||
+- len < rq1->sadb_x_ipsecrequest_len)
++ if (len < sizeof(*rq1) ||
++ len < rq1->sadb_x_ipsecrequest_len ||
++ rq1->sadb_x_ipsecrequest_len < sizeof(*rq1))
+ return -EINVAL;
+
+ /* old endoints */
+ err = parse_sockaddr_pair((struct sockaddr *)(rq1 + 1),
+- rq1->sadb_x_ipsecrequest_len,
++ rq1->sadb_x_ipsecrequest_len - sizeof(*rq1),
+ &m->old_saddr, &m->old_daddr,
+ &m->old_family);
+ if (err)
+@@ -2466,13 +2496,14 @@ static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
+ rq2 = (struct sadb_x_ipsecrequest *)((u8 *)rq1 + rq1->sadb_x_ipsecrequest_len);
+ len -= rq1->sadb_x_ipsecrequest_len;
+
+- if (len <= sizeof(struct sadb_x_ipsecrequest) ||
+- len < rq2->sadb_x_ipsecrequest_len)
++ if (len <= sizeof(*rq2) ||
++ len < rq2->sadb_x_ipsecrequest_len ||
++ rq2->sadb_x_ipsecrequest_len < sizeof(*rq2))
+ return -EINVAL;
+
+ /* new endpoints */
+ err = parse_sockaddr_pair((struct sockaddr *)(rq2 + 1),
+- rq2->sadb_x_ipsecrequest_len,
++ rq2->sadb_x_ipsecrequest_len - sizeof(*rq2),
+ &m->new_saddr, &m->new_daddr,
+ &m->new_family);
+ if (err)
+@@ -2687,14 +2718,18 @@ static int pfkey_spddump(struct sock *sk, struct sk_buff *skb, const struct sadb
+ {
+ struct pfkey_sock *pfk = pfkey_sk(sk);
+
+- if (pfk->dump.dump != NULL)
++ mutex_lock(&pfk->dump_lock);
++ if (pfk->dump.dump != NULL) {
++ mutex_unlock(&pfk->dump_lock);
+ return -EBUSY;
++ }
+
+ pfk->dump.msg_version = hdr->sadb_msg_version;
+ pfk->dump.msg_portid = hdr->sadb_msg_pid;
+ pfk->dump.dump = pfkey_dump_sp;
+ pfk->dump.done = pfkey_dump_sp_done;
+ xfrm_policy_walk_init(&pfk->dump.u.policy, XFRM_POLICY_TYPE_MAIN);
++ mutex_unlock(&pfk->dump_lock);
+
+ return pfkey_do_dump(pfk);
+ }
+diff --git a/net/nfc/core.c b/net/nfc/core.c
+index cff3f1614ad4..54596f609d04 100644
+--- a/net/nfc/core.c
++++ b/net/nfc/core.c
+@@ -969,6 +969,8 @@ static void nfc_release(struct device *d)
+ kfree(se);
+ }
+
++ ida_simple_remove(&nfc_index_ida, dev->idx);
++
+ kfree(dev);
+ }
+
+@@ -1043,6 +1045,7 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
+ int tx_headroom, int tx_tailroom)
+ {
+ struct nfc_dev *dev;
++ int rc;
+
+ if (!ops->start_poll || !ops->stop_poll || !ops->activate_target ||
+ !ops->deactivate_target || !ops->im_transceive)
+@@ -1055,6 +1058,15 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
+ if (!dev)
+ return NULL;
+
++ rc = ida_simple_get(&nfc_index_ida, 0, 0, GFP_KERNEL);
++ if (rc < 0)
++ goto err_free_dev;
++ dev->idx = rc;
++
++ dev->dev.class = &nfc_class;
++ dev_set_name(&dev->dev, "nfc%d", dev->idx);
++ device_initialize(&dev->dev);
++
+ dev->ops = ops;
+ dev->supported_protocols = supported_protocols;
+ dev->tx_headroom = tx_headroom;
+@@ -1077,6 +1089,11 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
+ }
+
+ return dev;
++
++err_free_dev:
++ kfree(dev);
++
++ return ERR_PTR(rc);
+ }
+ EXPORT_SYMBOL(nfc_allocate_device);
+
+@@ -1091,14 +1108,6 @@ int nfc_register_device(struct nfc_dev *dev)
+
+ pr_debug("dev_name=%s\n", dev_name(&dev->dev));
+
+- dev->idx = ida_simple_get(&nfc_index_ida, 0, 0, GFP_KERNEL);
+- if (dev->idx < 0)
+- return dev->idx;
+-
+- dev->dev.class = &nfc_class;
+- dev_set_name(&dev->dev, "nfc%d", dev->idx);
+- device_initialize(&dev->dev);
+-
+ mutex_lock(&nfc_devlist_mutex);
+ nfc_devlist_generation++;
+ rc = device_add(&dev->dev);
+@@ -1136,12 +1145,10 @@ EXPORT_SYMBOL(nfc_register_device);
+ */
+ void nfc_unregister_device(struct nfc_dev *dev)
+ {
+- int rc, id;
++ int rc;
+
+ pr_debug("dev_name=%s\n", dev_name(&dev->dev));
+
+- id = dev->idx;
+-
+ if (dev->rfkill) {
+ rfkill_unregister(dev->rfkill);
+ rfkill_destroy(dev->rfkill);
+@@ -1166,8 +1173,6 @@ void nfc_unregister_device(struct nfc_dev *dev)
+ nfc_devlist_generation++;
+ device_del(&dev->dev);
+ mutex_unlock(&nfc_devlist_mutex);
+-
+- ida_simple_remove(&nfc_index_ida, id);
+ }
+ EXPORT_SYMBOL(nfc_unregister_device);
+
+diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c
+index 9578bd6a4f3e..5a6b76f8d157 100644
+--- a/net/nfc/llcp_sock.c
++++ b/net/nfc/llcp_sock.c
+@@ -76,7 +76,8 @@ static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
+ struct sockaddr_nfc_llcp llcp_addr;
+ int len, ret = 0;
+
+- if (!addr || addr->sa_family != AF_NFC)
++ if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
++ addr->sa_family != AF_NFC)
+ return -EINVAL;
+
+ pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
+@@ -150,7 +151,8 @@ static int llcp_raw_sock_bind(struct socket *sock, struct sockaddr *addr,
+ struct sockaddr_nfc_llcp llcp_addr;
+ int len, ret = 0;
+
+- if (!addr || addr->sa_family != AF_NFC)
++ if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
++ addr->sa_family != AF_NFC)
+ return -EINVAL;
+
+ pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
+@@ -655,8 +657,7 @@ static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
+
+ pr_debug("sock %p sk %p flags 0x%x\n", sock, sk, flags);
+
+- if (!addr || len < sizeof(struct sockaddr_nfc) ||
+- addr->sa_family != AF_NFC)
++ if (!addr || len < sizeof(*addr) || addr->sa_family != AF_NFC)
+ return -EINVAL;
+
+ if (addr->service_name_len == 0 && addr->dsap == 0)
+diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
+index 49ff32106080..a776fb53d66d 100644
+--- a/net/nfc/nci/core.c
++++ b/net/nfc/nci/core.c
+@@ -981,8 +981,7 @@ struct nci_dev *nci_allocate_device(struct nci_ops *ops,
+ return ndev;
+
+ free_nfc:
+- kfree(ndev->nfc_dev);
+-
++ nfc_free_device(ndev->nfc_dev);
+ free_nci:
+ kfree(ndev);
+ return NULL;
+diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
+index 3763036710ae..2f2a2a0e56ec 100644
+--- a/net/nfc/netlink.c
++++ b/net/nfc/netlink.c
+@@ -865,7 +865,9 @@ static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info)
+ u32 device_idx, target_idx, protocol;
+ int rc;
+
+- if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
++ if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
++ !info->attrs[NFC_ATTR_TARGET_INDEX] ||
++ !info->attrs[NFC_ATTR_PROTOCOLS])
+ return -EINVAL;
+
+ device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index 93c9a70d046e..c29070c27073 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -3370,14 +3370,19 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
+
+ if (optlen != sizeof(val))
+ return -EINVAL;
+- if (po->rx_ring.pg_vec || po->tx_ring.pg_vec)
+- return -EBUSY;
+ if (copy_from_user(&val, optval, sizeof(val)))
+ return -EFAULT;
+ if (val > INT_MAX)
+ return -EINVAL;
+- po->tp_reserve = val;
+- return 0;
++ lock_sock(sk);
++ if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) {
++ ret = -EBUSY;
++ } else {
++ po->tp_reserve = val;
++ ret = 0;
++ }
++ release_sock(sk);
++ return ret;
+ }
+ case PACKET_LOSS:
+ {
+@@ -3954,7 +3959,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
+ register_prot_hook(sk);
+ }
+ spin_unlock(&po->bind_lock);
+- if (closing && (po->tp_version > TPACKET_V2)) {
++ if (pg_vec && (po->tp_version > TPACKET_V2)) {
+ /* Because we don't support block-based V3 on tx-ring */
+ if (!tx_ring)
+ prb_shutdown_retire_blk_timer(po, tx_ring, rb_queue);
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 9b5dd2ac60b6..a0e45ae0a628 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -2228,6 +2228,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1043, 0x8691, "ASUS ROG Ranger VIII", ALC882_FIXUP_GPIO3),
+ SND_PCI_QUIRK(0x104d, 0x9047, "Sony Vaio TT", ALC889_FIXUP_VAIO_TT),
+ SND_PCI_QUIRK(0x104d, 0x905a, "Sony Vaio Z", ALC882_FIXUP_NO_PRIMARY_HP),
++ SND_PCI_QUIRK(0x104d, 0x9060, "Sony Vaio VPCL14M1R", ALC882_FIXUP_NO_PRIMARY_HP),
+ SND_PCI_QUIRK(0x104d, 0x9043, "Sony Vaio VGC-LN51JGB", ALC882_FIXUP_NO_PRIMARY_HP),
+ SND_PCI_QUIRK(0x104d, 0x9044, "Sony VAIO AiO", ALC882_FIXUP_NO_PRIMARY_HP),
+
+diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
+index 51c4713ac6e3..468fdf21be4f 100644
+--- a/sound/soc/codecs/tlv320aic3x.c
++++ b/sound/soc/codecs/tlv320aic3x.c
+@@ -125,6 +125,16 @@ static const struct reg_default aic3x_reg[] = {
+ { 108, 0x00 }, { 109, 0x00 },
+ };
+
++static bool aic3x_volatile_reg(struct device *dev, unsigned int reg)
++{
++ switch (reg) {
++ case AIC3X_RESET:
++ return true;
++ default:
++ return false;
++ }
++}
++
+ static const struct regmap_config aic3x_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+@@ -132,6 +142,9 @@ static const struct regmap_config aic3x_regmap = {
+ .max_register = DAC_ICC_ADJ,
+ .reg_defaults = aic3x_reg,
+ .num_reg_defaults = ARRAY_SIZE(aic3x_reg),
++
++ .volatile_reg = aic3x_volatile_reg,
++
+ .cache_type = REGCACHE_RBTREE,
+ };
+
+diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
+index 1874cf0e6cab..35805d7e2bc2 100644
+--- a/sound/soc/soc-compress.c
++++ b/sound/soc/soc-compress.c
+@@ -68,7 +68,8 @@ out:
+ static int soc_compr_open_fe(struct snd_compr_stream *cstream)
+ {
+ struct snd_soc_pcm_runtime *fe = cstream->private_data;
+- struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
++ struct snd_pcm_substream *fe_substream =
++ fe->pcm->streams[cstream->direction].substream;
+ struct snd_soc_platform *platform = fe->platform;
+ struct snd_soc_dpcm *dpcm;
+ struct snd_soc_dapm_widget_list *list;
+@@ -412,7 +413,8 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
+ struct snd_compr_params *params)
+ {
+ struct snd_soc_pcm_runtime *fe = cstream->private_data;
+- struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
++ struct snd_pcm_substream *fe_substream =
++ fe->pcm->streams[cstream->direction].substream;
+ struct snd_soc_platform *platform = fe->platform;
+ int ret = 0, stream;
+
+diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
+index 52fe7eb2dea1..c99e18cb2ba7 100644
+--- a/sound/soc/soc-pcm.c
++++ b/sound/soc/soc-pcm.c
+@@ -163,6 +163,10 @@ int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
+ dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
+ be->dai_link->name, event, dir);
+
++ if ((event == SND_SOC_DAPM_STREAM_STOP) &&
++ (be->dpcm[dir].users >= 1))
++ continue;
++
+ snd_soc_dapm_stream_event(be, dir, event);
+ }
+
+@@ -1991,9 +1995,11 @@ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
+ break;
++ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++ fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
++ break;
+ }
+
+ out:
+diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
+index c2131b851602..5fed093fd447 100644
+--- a/sound/usb/endpoint.c
++++ b/sound/usb/endpoint.c
+@@ -361,6 +361,9 @@ static void snd_complete_urb(struct urb *urb)
+ if (unlikely(atomic_read(&ep->chip->shutdown)))
+ goto exit_clear;
+
++ if (unlikely(!test_bit(EP_FLAG_RUNNING, &ep->flags)))
++ goto exit_clear;
++
+ if (usb_pipeout(ep->pipe)) {
+ retire_outbound_urb(ep, ctx);
+ /* can be stopped during retire callback */
+diff --git a/tools/lib/traceevent/plugin_sched_switch.c b/tools/lib/traceevent/plugin_sched_switch.c
+index f1ce60065258..ec30c2fcbac0 100644
+--- a/tools/lib/traceevent/plugin_sched_switch.c
++++ b/tools/lib/traceevent/plugin_sched_switch.c
+@@ -111,7 +111,7 @@ static int sched_switch_handler(struct trace_seq *s,
+ trace_seq_printf(s, "%lld ", val);
+
+ if (pevent_get_field_val(s, event, "prev_prio", record, &val, 0) == 0)
+- trace_seq_printf(s, "[%lld] ", val);
++ trace_seq_printf(s, "[%d] ", (int) val);
+
+ if (pevent_get_field_val(s, event, "prev_state", record, &val, 0) == 0)
+ write_state(s, val);
+@@ -129,7 +129,7 @@ static int sched_switch_handler(struct trace_seq *s,
+ trace_seq_printf(s, "%lld", val);
+
+ if (pevent_get_field_val(s, event, "next_prio", record, &val, 0) == 0)
+- trace_seq_printf(s, " [%lld]", val);
++ trace_seq_printf(s, " [%d]", (int) val);
+
+ return 0;
+ }
+diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
+index 6680fa5cb9dd..d9f04239a12a 100644
+--- a/tools/perf/ui/browser.c
++++ b/tools/perf/ui/browser.c
+@@ -673,7 +673,7 @@ static void __ui_browser__line_arrow_down(struct ui_browser *browser,
+ ui_browser__gotorc(browser, row, column + 1);
+ SLsmg_draw_hline(2);
+
+- if (row++ == 0)
++ if (++row == 0)
+ goto out;
+ } else
+ row = 0;
+diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
+index 3ddfab315e19..ec35cb33e46b 100644
+--- a/tools/perf/util/symbol-elf.c
++++ b/tools/perf/util/symbol-elf.c
+@@ -488,6 +488,12 @@ int sysfs__read_build_id(const char *filename, void *build_id, size_t size)
+ break;
+ } else {
+ int n = namesz + descsz;
++
++ if (n > (int)sizeof(bf)) {
++ n = sizeof(bf);
++ pr_debug("%s: truncating reading of build id in sysfs file %s: n_namesz=%u, n_descsz=%u.\n",
++ __func__, filename, nhdr.n_namesz, nhdr.n_descsz);
++ }
+ if (read(fd, bf, n) != n)
+ break;
+ }
+diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c
+index 620e37f741b8..6ddd3c742555 100644
+--- a/virt/kvm/vfio.c
++++ b/virt/kvm/vfio.c
+@@ -47,6 +47,22 @@ static struct vfio_group *kvm_vfio_group_get_external_user(struct file *filep)
+ return vfio_group;
+ }
+
++static bool kvm_vfio_external_group_match_file(struct vfio_group *group,
++ struct file *filep)
++{
++ bool ret, (*fn)(struct vfio_group *, struct file *);
++
++ fn = symbol_get(vfio_external_group_match_file);
++ if (!fn)
++ return false;
++
++ ret = fn(group, filep);
++
++ symbol_put(vfio_external_group_match_file);
++
++ return ret;
++}
++
+ static void kvm_vfio_group_put_external_user(struct vfio_group *vfio_group)
+ {
+ void (*fn)(struct vfio_group *);
+@@ -169,18 +185,13 @@ static int kvm_vfio_set_group(struct kvm_device *dev, long attr, u64 arg)
+ if (!f.file)
+ return -EBADF;
+
+- vfio_group = kvm_vfio_group_get_external_user(f.file);
+- fdput(f);
+-
+- if (IS_ERR(vfio_group))
+- return PTR_ERR(vfio_group);
+-
+ ret = -ENOENT;
+
+ mutex_lock(&kv->lock);
+
+ list_for_each_entry(kvg, &kv->group_list, node) {
+- if (kvg->vfio_group != vfio_group)
++ if (!kvm_vfio_external_group_match_file(kvg->vfio_group,
++ f.file))
+ continue;
+
+ list_del(&kvg->node);
+@@ -192,7 +203,7 @@ static int kvm_vfio_set_group(struct kvm_device *dev, long attr, u64 arg)
+
+ mutex_unlock(&kv->lock);
+
+- kvm_vfio_group_put_external_user(vfio_group);
++ fdput(f);
+
+ kvm_vfio_update_coherency(dev);
+
diff --git a/1044_linux-4.1.45.patch b/1044_linux-4.1.45.patch
new file mode 100644
index 0000000..eb4d11d
--- /dev/null
+++ b/1044_linux-4.1.45.patch
@@ -0,0 +1,4031 @@
+diff --git a/Makefile b/Makefile
+index 9c7aa08c70b7..d4c064604058 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 44
++SUBLEVEL = 45
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/alpha/include/asm/types.h b/arch/alpha/include/asm/types.h
+index 4cb4b6d3452c..0bc66e1d3a7e 100644
+--- a/arch/alpha/include/asm/types.h
++++ b/arch/alpha/include/asm/types.h
+@@ -1,6 +1,6 @@
+ #ifndef _ALPHA_TYPES_H
+ #define _ALPHA_TYPES_H
+
+-#include <asm-generic/int-ll64.h>
++#include <uapi/asm/types.h>
+
+ #endif /* _ALPHA_TYPES_H */
+diff --git a/arch/alpha/include/uapi/asm/types.h b/arch/alpha/include/uapi/asm/types.h
+index 9fd3cd459777..8d1024d7be05 100644
+--- a/arch/alpha/include/uapi/asm/types.h
++++ b/arch/alpha/include/uapi/asm/types.h
+@@ -9,8 +9,18 @@
+ * need to be careful to avoid a name clashes.
+ */
+
+-#ifndef __KERNEL__
++/*
++ * This is here because we used to use l64 for alpha
++ * and we don't want to impact user mode with our change to ll64
++ * in the kernel.
++ *
++ * However, some user programs are fine with this. They can
++ * flag __SANE_USERSPACE_TYPES__ to get int-ll64.h here.
++ */
++#if !defined(__SANE_USERSPACE_TYPES__) && !defined(__KERNEL__)
+ #include <asm-generic/int-l64.h>
++#else
++#include <asm-generic/int-ll64.h>
+ #endif
+
+ #endif /* _UAPI_ALPHA_TYPES_H */
+diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S
+index d868289c5a26..da600d814035 100644
+--- a/arch/arc/kernel/entry.S
++++ b/arch/arc/kernel/entry.S
+@@ -315,6 +315,12 @@ ENTRY(EV_MachineCheck)
+ lr r0, [efa]
+ mov r1, sp
+
++ ; hardware auto-disables MMU, re-enable it to allow kernel vaddr
++ ; access for say stack unwinding of modules for crash dumps
++ lr r3, [ARC_REG_PID]
++ or r3, r3, MMU_ENABLE
++ sr r3, [ARC_REG_PID]
++
+ lsr r3, r2, 8
+ bmsk r3, r3, 7
+ brne r3, ECR_C_MCHK_DUP_TLB, 1f
+diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c
+index 7f47d2a56f44..b7a0c44785c1 100644
+--- a/arch/arc/mm/tlb.c
++++ b/arch/arc/mm/tlb.c
+@@ -689,9 +689,6 @@ void do_tlb_overlap_fault(unsigned long cause, unsigned long address,
+
+ local_irq_save(flags);
+
+- /* re-enable the MMU */
+- write_aux_reg(ARC_REG_PID, MMU_ENABLE | read_aux_reg(ARC_REG_PID));
+-
+ /* loop thru all sets of TLB */
+ for (set = 0; set < mmu->sets; set++) {
+
+diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
+index 6333d9c17875..9c521f9959a9 100644
+--- a/arch/arm/mm/fault.c
++++ b/arch/arm/mm/fault.c
+@@ -314,8 +314,11 @@ retry:
+ * signal first. We do not need to release the mmap_sem because
+ * it would already be released in __lock_page_or_retry in
+ * mm/filemap.c. */
+- if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
++ if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current)) {
++ if (!user_mode(regs))
++ goto no_context;
+ return 0;
++ }
+
+ /*
+ * Major/minor page fault accounting is only done on the
+diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
+index c31e59fe2cb8..7b4e9ea0b1a4 100644
+--- a/arch/arm64/kernel/fpsimd.c
++++ b/arch/arm64/kernel/fpsimd.c
+@@ -156,9 +156,11 @@ void fpsimd_thread_switch(struct task_struct *next)
+
+ void fpsimd_flush_thread(void)
+ {
++ preempt_disable();
+ memset(¤t->thread.fpsimd_state, 0, sizeof(struct fpsimd_state));
+ fpsimd_flush_task_state(current);
+ set_thread_flag(TIF_FOREIGN_FPSTATE);
++ preempt_enable();
+ }
+
+ /*
+diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
+index 16523fbd9671..d0e42f6fcddd 100644
+--- a/arch/arm64/mm/fault.c
++++ b/arch/arm64/mm/fault.c
+@@ -253,8 +253,11 @@ retry:
+ * signal first. We do not need to release the mmap_sem because it
+ * would already be released in __lock_page_or_retry in mm/filemap.c.
+ */
+- if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
++ if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current)) {
++ if (!user_mode(regs))
++ goto no_context;
+ return 0;
++ }
+
+ /*
+ * Major/minor page fault accounting is only done on the initial
+diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
+index 91e5c1758b5c..64e016abb2a5 100644
+--- a/arch/powerpc/kernel/align.c
++++ b/arch/powerpc/kernel/align.c
+@@ -236,6 +236,28 @@ static int emulate_dcbz(struct pt_regs *regs, unsigned char __user *addr)
+
+ #define SWIZ_PTR(p) ((unsigned char __user *)((p) ^ swiz))
+
++#define __get_user_or_set_dar(_regs, _dest, _addr) \
++ ({ \
++ int rc = 0; \
++ typeof(_addr) __addr = (_addr); \
++ if (__get_user_inatomic(_dest, __addr)) { \
++ _regs->dar = (unsigned long)__addr; \
++ rc = -EFAULT; \
++ } \
++ rc; \
++ })
++
++#define __put_user_or_set_dar(_regs, _src, _addr) \
++ ({ \
++ int rc = 0; \
++ typeof(_addr) __addr = (_addr); \
++ if (__put_user_inatomic(_src, __addr)) { \
++ _regs->dar = (unsigned long)__addr; \
++ rc = -EFAULT; \
++ } \
++ rc; \
++ })
++
+ static int emulate_multiple(struct pt_regs *regs, unsigned char __user *addr,
+ unsigned int reg, unsigned int nb,
+ unsigned int flags, unsigned int instr,
+@@ -264,9 +286,10 @@ static int emulate_multiple(struct pt_regs *regs, unsigned char __user *addr,
+ } else {
+ unsigned long pc = regs->nip ^ (swiz & 4);
+
+- if (__get_user_inatomic(instr,
+- (unsigned int __user *)pc))
++ if (__get_user_or_set_dar(regs, instr,
++ (unsigned int __user *)pc))
+ return -EFAULT;
++
+ if (swiz == 0 && (flags & SW))
+ instr = cpu_to_le32(instr);
+ nb = (instr >> 11) & 0x1f;
+@@ -310,31 +333,31 @@ static int emulate_multiple(struct pt_regs *regs, unsigned char __user *addr,
+ ((nb0 + 3) / 4) * sizeof(unsigned long));
+
+ for (i = 0; i < nb; ++i, ++p)
+- if (__get_user_inatomic(REG_BYTE(rptr, i ^ bswiz),
+- SWIZ_PTR(p)))
++ if (__get_user_or_set_dar(regs, REG_BYTE(rptr, i ^ bswiz),
++ SWIZ_PTR(p)))
+ return -EFAULT;
+ if (nb0 > 0) {
+ rptr = ®s->gpr[0];
+ addr += nb;
+ for (i = 0; i < nb0; ++i, ++p)
+- if (__get_user_inatomic(REG_BYTE(rptr,
+- i ^ bswiz),
+- SWIZ_PTR(p)))
++ if (__get_user_or_set_dar(regs,
++ REG_BYTE(rptr, i ^ bswiz),
++ SWIZ_PTR(p)))
+ return -EFAULT;
+ }
+
+ } else {
+ for (i = 0; i < nb; ++i, ++p)
+- if (__put_user_inatomic(REG_BYTE(rptr, i ^ bswiz),
+- SWIZ_PTR(p)))
++ if (__put_user_or_set_dar(regs, REG_BYTE(rptr, i ^ bswiz),
++ SWIZ_PTR(p)))
+ return -EFAULT;
+ if (nb0 > 0) {
+ rptr = ®s->gpr[0];
+ addr += nb;
+ for (i = 0; i < nb0; ++i, ++p)
+- if (__put_user_inatomic(REG_BYTE(rptr,
+- i ^ bswiz),
+- SWIZ_PTR(p)))
++ if (__put_user_or_set_dar(regs,
++ REG_BYTE(rptr, i ^ bswiz),
++ SWIZ_PTR(p)))
+ return -EFAULT;
+ }
+ }
+@@ -346,29 +369,32 @@ static int emulate_multiple(struct pt_regs *regs, unsigned char __user *addr,
+ * Only POWER6 has these instructions, and it does true little-endian,
+ * so we don't need the address swizzling.
+ */
+-static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg,
+- unsigned int flags)
++static int emulate_fp_pair(struct pt_regs *regs, unsigned char __user *addr,
++ unsigned int reg, unsigned int flags)
+ {
+ char *ptr0 = (char *) ¤t->thread.TS_FPR(reg);
+ char *ptr1 = (char *) ¤t->thread.TS_FPR(reg+1);
+- int i, ret, sw = 0;
++ int i, sw = 0;
+
+ if (reg & 1)
+ return 0; /* invalid form: FRS/FRT must be even */
+ if (flags & SW)
+ sw = 7;
+- ret = 0;
++
+ for (i = 0; i < 8; ++i) {
+ if (!(flags & ST)) {
+- ret |= __get_user(ptr0[i^sw], addr + i);
+- ret |= __get_user(ptr1[i^sw], addr + i + 8);
++ if (__get_user_or_set_dar(regs, ptr0[i^sw], addr + i))
++ return -EFAULT;
++ if (__get_user_or_set_dar(regs, ptr1[i^sw], addr + i + 8))
++ return -EFAULT;
+ } else {
+- ret |= __put_user(ptr0[i^sw], addr + i);
+- ret |= __put_user(ptr1[i^sw], addr + i + 8);
++ if (__put_user_or_set_dar(regs, ptr0[i^sw], addr + i))
++ return -EFAULT;
++ if (__put_user_or_set_dar(regs, ptr1[i^sw], addr + i + 8))
++ return -EFAULT;
+ }
+ }
+- if (ret)
+- return -EFAULT;
++
+ return 1; /* exception handled and fixed up */
+ }
+
+@@ -378,24 +404,27 @@ static int emulate_lq_stq(struct pt_regs *regs, unsigned char __user *addr,
+ {
+ char *ptr0 = (char *)®s->gpr[reg];
+ char *ptr1 = (char *)®s->gpr[reg+1];
+- int i, ret, sw = 0;
++ int i, sw = 0;
+
+ if (reg & 1)
+ return 0; /* invalid form: GPR must be even */
+ if (flags & SW)
+ sw = 7;
+- ret = 0;
++
+ for (i = 0; i < 8; ++i) {
+ if (!(flags & ST)) {
+- ret |= __get_user(ptr0[i^sw], addr + i);
+- ret |= __get_user(ptr1[i^sw], addr + i + 8);
++ if (__get_user_or_set_dar(regs, ptr0[i^sw], addr + i))
++ return -EFAULT;
++ if (__get_user_or_set_dar(regs, ptr1[i^sw], addr + i + 8))
++ return -EFAULT;
+ } else {
+- ret |= __put_user(ptr0[i^sw], addr + i);
+- ret |= __put_user(ptr1[i^sw], addr + i + 8);
++ if (__put_user_or_set_dar(regs, ptr0[i^sw], addr + i))
++ return -EFAULT;
++ if (__put_user_or_set_dar(regs, ptr1[i^sw], addr + i + 8))
++ return -EFAULT;
+ }
+ }
+- if (ret)
+- return -EFAULT;
++
+ return 1; /* exception handled and fixed up */
+ }
+ #endif /* CONFIG_PPC64 */
+@@ -688,9 +717,14 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
+ for (j = 0; j < length; j += elsize) {
+ for (i = 0; i < elsize; ++i) {
+ if (flags & ST)
+- ret |= __put_user(ptr[i^sw], addr + i);
++ ret = __put_user_or_set_dar(regs, ptr[i^sw],
++ addr + i);
+ else
+- ret |= __get_user(ptr[i^sw], addr + i);
++ ret = __get_user_or_set_dar(regs, ptr[i^sw],
++ addr + i);
++
++ if (ret)
++ return ret;
+ }
+ ptr += elsize;
+ #ifdef __LITTLE_ENDIAN__
+@@ -740,7 +774,7 @@ int fix_alignment(struct pt_regs *regs)
+ unsigned int dsisr;
+ unsigned char __user *addr;
+ unsigned long p, swiz;
+- int ret, i;
++ int i;
+ union data {
+ u64 ll;
+ double dd;
+@@ -923,7 +957,7 @@ int fix_alignment(struct pt_regs *regs)
+ if (flags & F) {
+ /* Special case for 16-byte FP loads and stores */
+ PPC_WARN_ALIGNMENT(fp_pair, regs);
+- return emulate_fp_pair(addr, reg, flags);
++ return emulate_fp_pair(regs, addr, reg, flags);
+ } else {
+ #ifdef CONFIG_PPC64
+ /* Special case for 16-byte loads and stores */
+@@ -953,15 +987,12 @@ int fix_alignment(struct pt_regs *regs)
+ }
+
+ data.ll = 0;
+- ret = 0;
+ p = (unsigned long)addr;
+
+ for (i = 0; i < nb; i++)
+- ret |= __get_user_inatomic(data.v[start + i],
+- SWIZ_PTR(p++));
+-
+- if (unlikely(ret))
+- return -EFAULT;
++ if (__get_user_or_set_dar(regs, data.v[start + i],
++ SWIZ_PTR(p++)))
++ return -EFAULT;
+
+ } else if (flags & F) {
+ data.ll = current->thread.TS_FPR(reg);
+@@ -1031,15 +1062,13 @@ int fix_alignment(struct pt_regs *regs)
+ break;
+ }
+
+- ret = 0;
+ p = (unsigned long)addr;
+
+ for (i = 0; i < nb; i++)
+- ret |= __put_user_inatomic(data.v[start + i],
+- SWIZ_PTR(p++));
++ if (__put_user_or_set_dar(regs, data.v[start + i],
++ SWIZ_PTR(p++)))
++ return -EFAULT;
+
+- if (unlikely(ret))
+- return -EFAULT;
+ } else if (flags & F)
+ current->thread.TS_FPR(reg) = data.ll;
+ else
+diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
+index 2903ff34174c..a8bd57d5ef43 100644
+--- a/arch/x86/include/asm/elf.h
++++ b/arch/x86/include/asm/elf.h
+@@ -204,6 +204,7 @@ void set_personality_ia32(bool);
+
+ #define ELF_CORE_COPY_REGS(pr_reg, regs) \
+ do { \
++ unsigned long base; \
+ unsigned v; \
+ (pr_reg)[0] = (regs)->r15; \
+ (pr_reg)[1] = (regs)->r14; \
+@@ -226,8 +227,8 @@ do { \
+ (pr_reg)[18] = (regs)->flags; \
+ (pr_reg)[19] = (regs)->sp; \
+ (pr_reg)[20] = (regs)->ss; \
+- (pr_reg)[21] = current->thread.fs; \
+- (pr_reg)[22] = current->thread.gs; \
++ rdmsrl(MSR_FS_BASE, base); (pr_reg)[21] = base; \
++ rdmsrl(MSR_KERNEL_GS_BASE, base); (pr_reg)[22] = base; \
+ asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \
+ asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \
+ asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \
+diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
+index 34a5b93704d3..b36deb1d9561 100644
+--- a/arch/x86/include/asm/io.h
++++ b/arch/x86/include/asm/io.h
+@@ -301,13 +301,13 @@ static inline unsigned type in##bwl##_p(int port) \
+ static inline void outs##bwl(int port, const void *addr, unsigned long count) \
+ { \
+ asm volatile("rep; outs" #bwl \
+- : "+S"(addr), "+c"(count) : "d"(port)); \
++ : "+S"(addr), "+c"(count) : "d"(port) : "memory"); \
+ } \
+ \
+ static inline void ins##bwl(int port, void *addr, unsigned long count) \
+ { \
+ asm volatile("rep; ins" #bwl \
+- : "+D"(addr), "+c"(count) : "d"(port)); \
++ : "+D"(addr), "+c"(count) : "d"(port) : "memory"); \
+ }
+
+ BUILDIO(b, b, char)
+diff --git a/block/blk-core.c b/block/blk-core.c
+index bbbf36e6066b..a891e1f19f7b 100644
+--- a/block/blk-core.c
++++ b/block/blk-core.c
+@@ -194,7 +194,7 @@ EXPORT_SYMBOL(blk_delay_queue);
+ **/
+ void blk_start_queue(struct request_queue *q)
+ {
+- WARN_ON(!irqs_disabled());
++ WARN_ON(!in_interrupt() && !irqs_disabled());
+
+ queue_flag_clear(QUEUE_FLAG_STOPPED, q);
+ __blk_run_queue(q);
+diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
+index c0f03562a145..3734c5591d07 100644
+--- a/crypto/algif_skcipher.c
++++ b/crypto/algif_skcipher.c
+@@ -94,8 +94,13 @@ static void skcipher_free_async_sgls(struct skcipher_async_req *sreq)
+ }
+ sgl = sreq->tsg;
+ n = sg_nents(sgl);
+- for_each_sg(sgl, sg, n, i)
+- put_page(sg_page(sg));
++ for_each_sg(sgl, sg, n, i) {
++ struct page *page = sg_page(sg);
++
++ /* some SGs may not have a page mapped */
++ if (page && atomic_read(&page->_count))
++ put_page(page);
++ }
+
+ kfree(sreq->tsg);
+ }
+diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
+index e82d0976a5d0..568120eee7d9 100644
+--- a/drivers/acpi/apei/ghes.c
++++ b/drivers/acpi/apei/ghes.c
+@@ -1064,6 +1064,7 @@ static int ghes_remove(struct platform_device *ghes_dev)
+ if (list_empty(&ghes_sci))
+ unregister_acpi_hed_notifier(&ghes_notifier_sci);
+ mutex_unlock(&ghes_list_mutex);
++ synchronize_rcu();
+ break;
+ case ACPI_HEST_NOTIFY_NMI:
+ ghes_nmi_remove(ghes);
+diff --git a/drivers/acpi/ioapic.c b/drivers/acpi/ioapic.c
+index ccdc8db16bb8..fa2cf2dc4e33 100644
+--- a/drivers/acpi/ioapic.c
++++ b/drivers/acpi/ioapic.c
+@@ -45,6 +45,12 @@ static acpi_status setup_res(struct acpi_resource *acpi_res, void *data)
+ struct resource *res = data;
+ struct resource_win win;
+
++ /*
++ * We might assign this to 'res' later, make sure all pointers are
++ * cleared before the resource is added to the global list
++ */
++ memset(&win, 0, sizeof(win));
++
+ res->flags = 0;
+ if (acpi_dev_filter_resource_type(acpi_res, IORESOURCE_MEM) == 0)
+ return AE_OK;
+diff --git a/drivers/android/binder.c b/drivers/android/binder.c
+index 6f086415727c..235ba1fbabdb 100644
+--- a/drivers/android/binder.c
++++ b/drivers/android/binder.c
+@@ -2865,7 +2865,7 @@ static int binder_mmap(struct file *filp, struct vm_area_struct *vma)
+ const char *failure_string;
+ struct binder_buffer *buffer;
+
+- if (proc->tsk != current)
++ if (proc->tsk != current->group_leader)
+ return -EINVAL;
+
+ if ((vma->vm_end - vma->vm_start) > SZ_4M)
+diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
+index 8d4d959a821c..8706533db57b 100644
+--- a/drivers/ata/pata_amd.c
++++ b/drivers/ata/pata_amd.c
+@@ -616,6 +616,7 @@ static const struct pci_device_id amd[] = {
+ { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE), 8 },
+ { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE), 8 },
+ { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_IDE), 9 },
++ { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_DEV_IDE), 9 },
+
+ { },
+ };
+diff --git a/drivers/ata/pata_cs5536.c b/drivers/ata/pata_cs5536.c
+index 6c15a554efbe..dc1255294628 100644
+--- a/drivers/ata/pata_cs5536.c
++++ b/drivers/ata/pata_cs5536.c
+@@ -289,6 +289,7 @@ static int cs5536_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+
+ static const struct pci_device_id cs5536[] = {
+ { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_IDE), },
++ { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_DEV_IDE), },
+ { },
+ };
+
+diff --git a/drivers/base/bus.c b/drivers/base/bus.c
+index 79bc203f51ef..07ea8608fb0b 100644
+--- a/drivers/base/bus.c
++++ b/drivers/base/bus.c
+@@ -722,7 +722,7 @@ int bus_add_driver(struct device_driver *drv)
+
+ out_unregister:
+ kobject_put(&priv->kobj);
+- kfree(drv->p);
++ /* drv->p is freed in driver_release() */
+ drv->p = NULL;
+ out_put_bus:
+ bus_put(bus);
+diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
+index 1e46eb2305c0..f928e698f659 100644
+--- a/drivers/block/skd_main.c
++++ b/drivers/block/skd_main.c
+@@ -2214,6 +2214,9 @@ static void skd_send_fitmsg(struct skd_device *skdev,
+ */
+ qcmd |= FIT_QCMD_MSGSIZE_64;
+
++ /* Make sure skd_msg_buf is written before the doorbell is triggered. */
++ smp_wmb();
++
+ SKD_WRITEQ(skdev, qcmd, FIT_Q_COMMAND);
+
+ }
+@@ -2260,6 +2263,9 @@ static void skd_send_special_fitmsg(struct skd_device *skdev,
+ qcmd = skspcl->mb_dma_address;
+ qcmd |= FIT_QCMD_QID_NORMAL + FIT_QCMD_MSGSIZE_128;
+
++ /* Make sure skd_msg_buf is written before the doorbell is triggered. */
++ smp_wmb();
++
+ SKD_WRITEQ(skdev, qcmd, FIT_Q_COMMAND);
+ }
+
+@@ -4679,15 +4685,16 @@ static void skd_free_disk(struct skd_device *skdev)
+ {
+ struct gendisk *disk = skdev->disk;
+
+- if (disk != NULL) {
+- struct request_queue *q = disk->queue;
++ if (disk && (disk->flags & GENHD_FL_UP))
++ del_gendisk(disk);
+
+- if (disk->flags & GENHD_FL_UP)
+- del_gendisk(disk);
+- if (q)
+- blk_cleanup_queue(q);
+- put_disk(disk);
++ if (skdev->queue) {
++ blk_cleanup_queue(skdev->queue);
++ skdev->queue = NULL;
++ disk->queue = NULL;
+ }
++
++ put_disk(disk);
+ skdev->disk = NULL;
+ }
+
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index 3956fd646bf2..0c13dfd1c29d 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -323,6 +323,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
++ { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
+
+ /* Additional Realtek 8821AE Bluetooth devices */
+ { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
+diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
+index 6e3b78ee7d16..be9b1c8b9209 100644
+--- a/drivers/gpu/drm/drm_atomic.c
++++ b/drivers/gpu/drm/drm_atomic.c
+@@ -996,6 +996,9 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
+ if (config->funcs->atomic_check)
+ ret = config->funcs->atomic_check(state->dev, state);
+
++ if (ret)
++ return ret;
++
+ if (!state->allow_modeset) {
+ for_each_crtc_in_state(state, crtc, crtc_state, i) {
+ if (crtc_state->mode_changed ||
+@@ -1007,7 +1010,7 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
+ }
+ }
+
+- return ret;
++ return 0;
+ }
+ EXPORT_SYMBOL(drm_atomic_check_only);
+
+diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
+index 16a164770713..9b2de3ff66d9 100644
+--- a/drivers/gpu/drm/drm_gem.c
++++ b/drivers/gpu/drm/drm_gem.c
+@@ -710,13 +710,13 @@ drm_gem_object_release_handle(int id, void *ptr, void *data)
+ struct drm_gem_object *obj = ptr;
+ struct drm_device *dev = obj->dev;
+
++ if (dev->driver->gem_close_object)
++ dev->driver->gem_close_object(obj, file_priv);
++
+ if (drm_core_check_feature(dev, DRIVER_PRIME))
+ drm_gem_remove_prime_handles(obj, file_priv);
+ drm_vma_node_revoke(&obj->vma_node, file_priv->filp);
+
+- if (dev->driver->gem_close_object)
+- dev->driver->gem_close_object(obj, file_priv);
+-
+ drm_gem_object_handle_unreference_unlocked(obj);
+
+ return 0;
+diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c
+index b728523e194f..bfdbfc431e07 100644
+--- a/drivers/gpu/drm/i2c/adv7511.c
++++ b/drivers/gpu/drm/i2c/adv7511.c
+@@ -48,6 +48,10 @@ struct adv7511 {
+ struct gpio_desc *gpio_pd;
+ };
+
++static const int edid_i2c_addr = 0x7e;
++static const int packet_i2c_addr = 0x70;
++static const int cec_i2c_addr = 0x78;
++
+ static struct adv7511 *encoder_to_adv7511(struct drm_encoder *encoder)
+ {
+ return to_encoder_slave(encoder)->slave_priv;
+@@ -362,12 +366,19 @@ static void adv7511_power_on(struct adv7511 *adv7511)
+ {
+ adv7511->current_edid_segment = -1;
+
+- regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
+- ADV7511_INT0_EDID_READY);
+- regmap_write(adv7511->regmap, ADV7511_REG_INT(1),
+- ADV7511_INT1_DDC_ERROR);
+ regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
+ ADV7511_POWER_POWER_DOWN, 0);
++ if (adv7511->i2c_main->irq) {
++ /*
++ * Documentation says the INT_ENABLE registers are reset in
++ * POWER_DOWN mode. My 7511w preserved the bits, however.
++ * Still, let's be safe and stick to the documentation.
++ */
++ regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0),
++ ADV7511_INT0_EDID_READY);
++ regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1),
++ ADV7511_INT1_DDC_ERROR);
++ }
+
+ /*
+ * Per spec it is allowed to pulse the HDP signal to indicate that the
+@@ -567,13 +578,18 @@ static int adv7511_get_modes(struct drm_encoder *encoder,
+
+ /* Reading the EDID only works if the device is powered */
+ if (!adv7511->powered) {
+- regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
+- ADV7511_INT0_EDID_READY);
+- regmap_write(adv7511->regmap, ADV7511_REG_INT(1),
+- ADV7511_INT1_DDC_ERROR);
+ regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
+ ADV7511_POWER_POWER_DOWN, 0);
++ if (adv7511->i2c_main->irq) {
++ regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0),
++ ADV7511_INT0_EDID_READY);
++ regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1),
++ ADV7511_INT1_DDC_ERROR);
++ }
+ adv7511->current_edid_segment = -1;
++ /* Reset the EDID_I2C_ADDR register as it might be cleared */
++ regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
++ edid_i2c_addr);
+ }
+
+ edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511);
+@@ -849,10 +865,6 @@ static int adv7511_parse_dt(struct device_node *np,
+ return 0;
+ }
+
+-static const int edid_i2c_addr = 0x7e;
+-static const int packet_i2c_addr = 0x70;
+-static const int cec_i2c_addr = 0x78;
+-
+ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
+ {
+ struct adv7511_link_config link_config;
+diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+index 7c6f15d284e3..824c835330df 100644
+--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
++++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+@@ -148,8 +148,8 @@ static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc)
+ rcar_du_group_write(rcrtc->group, rcrtc->index % 2 ? OTAR2 : OTAR, 0);
+
+ /* Signal polarities */
+- value = ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : DSMR_VSL)
+- | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : DSMR_HSL)
++ value = ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? DSMR_VSL : 0)
++ | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? DSMR_HSL : 0)
+ | DSMR_DIPM_DE | DSMR_CSPM;
+ rcar_du_crtc_write(rcrtc, DSMR, value);
+
+@@ -171,7 +171,7 @@ static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc)
+ mode->crtc_vsync_start - 1);
+ rcar_du_crtc_write(rcrtc, VCR, mode->crtc_vtotal - 1);
+
+- rcar_du_crtc_write(rcrtc, DESR, mode->htotal - mode->hsync_start);
++ rcar_du_crtc_write(rcrtc, DESR, mode->htotal - mode->hsync_start - 1);
+ rcar_du_crtc_write(rcrtc, DEWR, mode->hdisplay);
+ }
+
+diff --git a/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c b/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c
+index 85043c5bad03..873e04aa9352 100644
+--- a/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c
++++ b/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c
+@@ -56,11 +56,11 @@ static int rcar_du_lvdsenc_start(struct rcar_du_lvdsenc *lvds,
+ return ret;
+
+ /* PLL clock configuration */
+- if (freq <= 38000)
++ if (freq < 39000)
+ pllcr = LVDPLLCR_CEEN | LVDPLLCR_COSEL | LVDPLLCR_PLLDLYCNT_38M;
+- else if (freq <= 60000)
++ else if (freq < 61000)
+ pllcr = LVDPLLCR_CEEN | LVDPLLCR_COSEL | LVDPLLCR_PLLDLYCNT_60M;
+- else if (freq <= 121000)
++ else if (freq < 121000)
+ pllcr = LVDPLLCR_CEEN | LVDPLLCR_COSEL | LVDPLLCR_PLLDLYCNT_121M;
+ else
+ pllcr = LVDPLLCR_PLLDLYCNT_150M;
+@@ -102,7 +102,7 @@ static int rcar_du_lvdsenc_start(struct rcar_du_lvdsenc *lvds,
+ /* Turn the PLL on, wait for the startup delay, and turn the output
+ * on.
+ */
+- lvdcr0 |= LVDCR0_PLLEN;
++ lvdcr0 |= LVDCR0_PLLON;
+ rcar_lvds_write(lvds, LVDCR0, lvdcr0);
+
+ usleep_range(100, 150);
+diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds_regs.h b/drivers/gpu/drm/rcar-du/rcar_lvds_regs.h
+index 77cf9289ab65..b1eafd097a79 100644
+--- a/drivers/gpu/drm/rcar-du/rcar_lvds_regs.h
++++ b/drivers/gpu/drm/rcar-du/rcar_lvds_regs.h
+@@ -18,7 +18,7 @@
+ #define LVDCR0_DMD (1 << 12)
+ #define LVDCR0_LVMD_MASK (0xf << 8)
+ #define LVDCR0_LVMD_SHIFT 8
+-#define LVDCR0_PLLEN (1 << 4)
++#define LVDCR0_PLLON (1 << 4)
+ #define LVDCR0_BEN (1 << 2)
+ #define LVDCR0_LVEN (1 << 1)
+ #define LVDCR0_LVRES (1 << 0)
+diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
+index 025c429050c0..5d8dfe027b30 100644
+--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
++++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
+@@ -612,7 +612,7 @@ static void ttm_page_pool_fill_locked(struct ttm_page_pool *pool,
+ } else {
+ pr_err("Failed to fill pool (%p)\n", pool);
+ /* If we have any pages left put them to the pool. */
+- list_for_each_entry(p, &pool->list, lru) {
++ list_for_each_entry(p, &new_pages, lru) {
+ ++cpages;
+ }
+ list_splice(&new_pages, &pool->list);
+diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c
+index f994712d0904..a9276eeb61d5 100644
+--- a/drivers/i2c/busses/i2c-ismt.c
++++ b/drivers/i2c/busses/i2c-ismt.c
+@@ -340,8 +340,10 @@ static int ismt_process_desc(const struct ismt_desc *desc,
+ break;
+ case I2C_SMBUS_BLOCK_DATA:
+ case I2C_SMBUS_I2C_BLOCK_DATA:
+- memcpy(&data->block[1], dma_buffer, desc->rxbytes);
+- data->block[0] = desc->rxbytes;
++ if (desc->rxbytes != dma_buffer[0] + 1)
++ return -EMSGSIZE;
++
++ memcpy(data->block, dma_buffer, desc->rxbytes);
+ break;
+ }
+ return 0;
+diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c
+index 19b2d689a5ef..4880aae98b4c 100644
+--- a/drivers/i2c/busses/i2c-jz4780.c
++++ b/drivers/i2c/busses/i2c-jz4780.c
+@@ -783,10 +783,6 @@ static int jz4780_i2c_probe(struct platform_device *pdev)
+
+ jz4780_i2c_writew(i2c, JZ4780_I2C_INTM, 0x0);
+
+- i2c->cmd = 0;
+- memset(i2c->cmd_buf, 0, BUFSIZE);
+- memset(i2c->data_buf, 0, BUFSIZE);
+-
+ i2c->irq = platform_get_irq(pdev, 0);
+ ret = devm_request_irq(&pdev->dev, i2c->irq, jz4780_i2c_irq, 0,
+ dev_name(&pdev->dev), i2c);
+diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+index 595511022795..3460dd0e3e99 100644
+--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
++++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+@@ -36,8 +36,6 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+ s32 poll_value = 0;
+
+ if (state) {
+- if (!atomic_read(&st->user_requested_state))
+- return 0;
+ if (sensor_hub_device_open(st->hsdev))
+ return -EIO;
+
+@@ -86,6 +84,9 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+ &report_val);
+ }
+
++ pr_debug("HID_SENSOR %s set power_state %d report_state %d\n",
++ st->pdev->name, state_val, report_val);
++
+ sensor_hub_get_feature(st->hsdev, st->power_state.report_id,
+ st->power_state.index,
+ sizeof(state_val), &state_val);
+@@ -107,6 +108,7 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+ ret = pm_runtime_get_sync(&st->pdev->dev);
+ else {
+ pm_runtime_mark_last_busy(&st->pdev->dev);
++ pm_runtime_use_autosuspend(&st->pdev->dev);
+ ret = pm_runtime_put_autosuspend(&st->pdev->dev);
+ }
+ if (ret < 0) {
+@@ -175,8 +177,6 @@ int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
+ /* Default to 3 seconds, but can be changed from sysfs */
+ pm_runtime_set_autosuspend_delay(&attrb->pdev->dev,
+ 3000);
+- pm_runtime_use_autosuspend(&attrb->pdev->dev);
+-
+ return ret;
+ error_unreg_trigger:
+ iio_trigger_unregister(trig);
+diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
+index b94bfd3f595b..7a9c50842d8b 100644
+--- a/drivers/iio/imu/adis16480.c
++++ b/drivers/iio/imu/adis16480.c
+@@ -696,7 +696,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
+ .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
+ .gyro_max_scale = 450,
+ .accel_max_val = IIO_M_S_2_TO_G(12500),
+- .accel_max_scale = 5,
++ .accel_max_scale = 10,
+ },
+ [ADIS16485] = {
+ .channels = adis16485_channels,
+diff --git a/drivers/input/mouse/trackpoint.c b/drivers/input/mouse/trackpoint.c
+index 354d47ecd66a..7e2dc5e56632 100644
+--- a/drivers/input/mouse/trackpoint.c
++++ b/drivers/input/mouse/trackpoint.c
+@@ -265,7 +265,8 @@ static int trackpoint_start_protocol(struct psmouse *psmouse, unsigned char *fir
+ if (ps2_command(&psmouse->ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID)))
+ return -1;
+
+- if (param[0] != TP_MAGIC_IDENT)
++ /* add new TP ID. */
++ if (!(param[0] & TP_MAGIC_IDENT))
+ return -1;
+
+ if (firmware_id)
+@@ -380,8 +381,8 @@ int trackpoint_detect(struct psmouse *psmouse, bool set_properties)
+ return 0;
+
+ if (trackpoint_read(&psmouse->ps2dev, TP_EXT_BTN, &button_info)) {
+- psmouse_warn(psmouse, "failed to get extended button data\n");
+- button_info = 0;
++ psmouse_warn(psmouse, "failed to get extended button data, assuming 3 buttons\n");
++ button_info = 0x33;
+ }
+
+ psmouse->private = kzalloc(sizeof(struct trackpoint_data), GFP_KERNEL);
+diff --git a/drivers/input/mouse/trackpoint.h b/drivers/input/mouse/trackpoint.h
+index 5617ed3a7d7a..88055755f82e 100644
+--- a/drivers/input/mouse/trackpoint.h
++++ b/drivers/input/mouse/trackpoint.h
+@@ -21,8 +21,9 @@
+ #define TP_COMMAND 0xE2 /* Commands start with this */
+
+ #define TP_READ_ID 0xE1 /* Sent for device identification */
+-#define TP_MAGIC_IDENT 0x01 /* Sent after a TP_READ_ID followed */
++#define TP_MAGIC_IDENT 0x03 /* Sent after a TP_READ_ID followed */
+ /* by the firmware ID */
++ /* Firmware ID includes 0x1, 0x2, 0x3 */
+
+
+ /*
+diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
+index 1f40cdc1b357..18fd4cd6d3c7 100644
+--- a/drivers/input/serio/i8042-x86ia64io.h
++++ b/drivers/input/serio/i8042-x86ia64io.h
+@@ -814,6 +814,13 @@ static const struct dmi_system_id __initconst i8042_dmi_kbdreset_table[] = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "P34"),
+ },
+ },
++ {
++ /* Gigabyte P57 - Elantech touchpad */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
++ DMI_MATCH(DMI_PRODUCT_NAME, "P57"),
++ },
++ },
+ {
+ /* Schenker XMG C504 - Elantech touchpad */
+ .matches = {
+diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c
+index 869d01dd4063..af20eac63ad4 100644
+--- a/drivers/irqchip/irq-atmel-aic-common.c
++++ b/drivers/irqchip/irq-atmel-aic-common.c
+@@ -148,9 +148,9 @@ void __init aic_common_rtc_irq_fixup(struct device_node *root)
+ struct device_node *np;
+ void __iomem *regs;
+
+- np = of_find_compatible_node(root, NULL, "atmel,at91rm9200-rtc");
++ np = of_find_compatible_node(NULL, NULL, "atmel,at91rm9200-rtc");
+ if (!np)
+- np = of_find_compatible_node(root, NULL,
++ np = of_find_compatible_node(NULL, NULL,
+ "atmel,at91sam9x5-rtc");
+
+ if (!np)
+@@ -202,7 +202,6 @@ void __init aic_common_irq_fixup(const struct of_device_id *matches)
+ return;
+
+ match = of_match_node(matches, root);
+- of_node_put(root);
+
+ if (match) {
+ void (*fixup)(struct device_node *) = match->data;
+diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c
+index 269c2354c431..e1d71574bdb5 100644
+--- a/drivers/irqchip/irq-mips-gic.c
++++ b/drivers/irqchip/irq-mips-gic.c
+@@ -861,8 +861,11 @@ static int __init gic_of_init(struct device_node *node,
+ gic_len = resource_size(&res);
+ }
+
+- if (mips_cm_present())
++ if (mips_cm_present()) {
+ write_gcr_gic_base(gic_base | CM_GCR_GIC_BASE_GICEN_MSK);
++ /* Ensure GIC region is enabled before trying to access it */
++ __sync();
++ }
+ gic_present = true;
+
+ __gic_init(gic_base, gic_len, cpu_vec, 0, node);
+diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
+index 04f7bc28ef83..dfdd1908641c 100644
+--- a/drivers/md/bcache/bcache.h
++++ b/drivers/md/bcache/bcache.h
+@@ -348,6 +348,7 @@ struct cached_dev {
+ /* Limit number of writeback bios in flight */
+ struct semaphore in_flight;
+ struct task_struct *writeback_thread;
++ struct workqueue_struct *writeback_write_wq;
+
+ struct keybuf writeback_keys;
+
+diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
+index a7a03a21d78a..8e5666ac8a6a 100644
+--- a/drivers/md/bcache/super.c
++++ b/drivers/md/bcache/super.c
+@@ -1054,7 +1054,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c)
+ }
+
+ if (BDEV_STATE(&dc->sb) == BDEV_STATE_DIRTY) {
+- bch_sectors_dirty_init(dc);
++ bch_sectors_dirty_init(&dc->disk);
+ atomic_set(&dc->has_dirty, 1);
+ atomic_inc(&dc->count);
+ bch_writeback_queue(dc);
+@@ -1087,6 +1087,8 @@ static void cached_dev_free(struct closure *cl)
+ cancel_delayed_work_sync(&dc->writeback_rate_update);
+ if (!IS_ERR_OR_NULL(dc->writeback_thread))
+ kthread_stop(dc->writeback_thread);
++ if (dc->writeback_write_wq)
++ destroy_workqueue(dc->writeback_write_wq);
+
+ mutex_lock(&bch_register_lock);
+
+@@ -1258,6 +1260,7 @@ static int flash_dev_run(struct cache_set *c, struct uuid_entry *u)
+ goto err;
+
+ bcache_device_attach(d, c, u - c->uuids);
++ bch_sectors_dirty_init(d);
+ bch_flash_dev_request_init(d);
+ add_disk(d->disk);
+
+@@ -1996,6 +1999,8 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
+ else
+ err = "device busy";
+ mutex_unlock(&bch_register_lock);
++ if (!IS_ERR(bdev))
++ bdput(bdev);
+ if (attr == &ksysfs_register_quiet)
+ goto out;
+ }
+diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
+index b3ff57d61dde..4fbb5532f24c 100644
+--- a/drivers/md/bcache/sysfs.c
++++ b/drivers/md/bcache/sysfs.c
+@@ -191,7 +191,7 @@ STORE(__cached_dev)
+ {
+ struct cached_dev *dc = container_of(kobj, struct cached_dev,
+ disk.kobj);
+- unsigned v = size;
++ ssize_t v = size;
+ struct cache_set *c;
+ struct kobj_uevent_env *env;
+
+@@ -226,7 +226,7 @@ STORE(__cached_dev)
+ bch_cached_dev_run(dc);
+
+ if (attr == &sysfs_cache_mode) {
+- ssize_t v = bch_read_string_list(buf, bch_cache_modes + 1);
++ v = bch_read_string_list(buf, bch_cache_modes + 1);
+
+ if (v < 0)
+ return v;
+diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c
+index db3ae4c2b223..6c18e3ec3e48 100644
+--- a/drivers/md/bcache/util.c
++++ b/drivers/md/bcache/util.c
+@@ -73,24 +73,44 @@ STRTO_H(strtouint, unsigned int)
+ STRTO_H(strtoll, long long)
+ STRTO_H(strtoull, unsigned long long)
+
++/**
++ * bch_hprint() - formats @v to human readable string for sysfs.
++ *
++ * @v - signed 64 bit integer
++ * @buf - the (at least 8 byte) buffer to format the result into.
++ *
++ * Returns the number of bytes used by format.
++ */
+ ssize_t bch_hprint(char *buf, int64_t v)
+ {
+ static const char units[] = "?kMGTPEZY";
+- char dec[4] = "";
+- int u, t = 0;
+-
+- for (u = 0; v >= 1024 || v <= -1024; u++) {
+- t = v & ~(~0 << 10);
+- v >>= 10;
+- }
+-
+- if (!u)
+- return sprintf(buf, "%llu", v);
+-
+- if (v < 100 && v > -100)
+- snprintf(dec, sizeof(dec), ".%i", t / 100);
+-
+- return sprintf(buf, "%lli%s%c", v, dec, units[u]);
++ int u = 0, t;
++
++ uint64_t q;
++
++ if (v < 0)
++ q = -v;
++ else
++ q = v;
++
++ /* For as long as the number is more than 3 digits, but at least
++ * once, shift right / divide by 1024. Keep the remainder for
++ * a digit after the decimal point.
++ */
++ do {
++ u++;
++
++ t = q & ~(~0 << 10);
++ q >>= 10;
++ } while (q >= 1000);
++
++ if (v < 0)
++ /* '-', up to 3 digits, '.', 1 digit, 1 character, null;
++ * yields 8 bytes.
++ */
++ return sprintf(buf, "-%llu.%i%c", q, t * 10 / 1024, units[u]);
++ else
++ return sprintf(buf, "%llu.%i%c", q, t * 10 / 1024, units[u]);
+ }
+
+ ssize_t bch_snprint_string_list(char *buf, size_t size, const char * const list[],
+diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
+index 540256a0df4f..b0667b321a3f 100644
+--- a/drivers/md/bcache/writeback.c
++++ b/drivers/md/bcache/writeback.c
+@@ -21,7 +21,8 @@
+ static void __update_writeback_rate(struct cached_dev *dc)
+ {
+ struct cache_set *c = dc->disk.c;
+- uint64_t cache_sectors = c->nbuckets * c->sb.bucket_size;
++ uint64_t cache_sectors = c->nbuckets * c->sb.bucket_size -
++ bcache_flash_devs_sectors_dirty(c);
+ uint64_t cache_dirty_target =
+ div_u64(cache_sectors * dc->writeback_percent, 100);
+
+@@ -190,7 +191,7 @@ static void write_dirty(struct closure *cl)
+
+ closure_bio_submit(&io->bio, cl, &io->dc->disk);
+
+- continue_at(cl, write_dirty_finish, system_wq);
++ continue_at(cl, write_dirty_finish, io->dc->writeback_write_wq);
+ }
+
+ static void read_dirty_endio(struct bio *bio, int error)
+@@ -210,7 +211,7 @@ static void read_dirty_submit(struct closure *cl)
+
+ closure_bio_submit(&io->bio, cl, &io->dc->disk);
+
+- continue_at(cl, write_dirty, system_wq);
++ continue_at(cl, write_dirty, io->dc->writeback_write_wq);
+ }
+
+ static void read_dirty(struct cached_dev *dc)
+@@ -488,17 +489,17 @@ static int sectors_dirty_init_fn(struct btree_op *_op, struct btree *b,
+ return MAP_CONTINUE;
+ }
+
+-void bch_sectors_dirty_init(struct cached_dev *dc)
++void bch_sectors_dirty_init(struct bcache_device *d)
+ {
+ struct sectors_dirty_init op;
+
+ bch_btree_op_init(&op.op, -1);
+- op.inode = dc->disk.id;
++ op.inode = d->id;
+
+- bch_btree_map_keys(&op.op, dc->disk.c, &KEY(op.inode, 0, 0),
++ bch_btree_map_keys(&op.op, d->c, &KEY(op.inode, 0, 0),
+ sectors_dirty_init_fn, 0);
+
+- dc->disk.sectors_dirty_last = bcache_dev_sectors_dirty(&dc->disk);
++ d->sectors_dirty_last = bcache_dev_sectors_dirty(d);
+ }
+
+ void bch_cached_dev_writeback_init(struct cached_dev *dc)
+@@ -522,6 +523,11 @@ void bch_cached_dev_writeback_init(struct cached_dev *dc)
+
+ int bch_cached_dev_writeback_start(struct cached_dev *dc)
+ {
++ dc->writeback_write_wq = alloc_workqueue("bcache_writeback_wq",
++ WQ_MEM_RECLAIM, 0);
++ if (!dc->writeback_write_wq)
++ return -ENOMEM;
++
+ dc->writeback_thread = kthread_create(bch_writeback_thread, dc,
+ "bcache_writeback");
+ if (IS_ERR(dc->writeback_thread))
+diff --git a/drivers/md/bcache/writeback.h b/drivers/md/bcache/writeback.h
+index 073a042aed24..daec4fd782ea 100644
+--- a/drivers/md/bcache/writeback.h
++++ b/drivers/md/bcache/writeback.h
+@@ -14,6 +14,25 @@ static inline uint64_t bcache_dev_sectors_dirty(struct bcache_device *d)
+ return ret;
+ }
+
++static inline uint64_t bcache_flash_devs_sectors_dirty(struct cache_set *c)
++{
++ uint64_t i, ret = 0;
++
++ mutex_lock(&bch_register_lock);
++
++ for (i = 0; i < c->nr_uuids; i++) {
++ struct bcache_device *d = c->devices[i];
++
++ if (!d || !UUID_FLASH_ONLY(&c->uuids[i]))
++ continue;
++ ret += bcache_dev_sectors_dirty(d);
++ }
++
++ mutex_unlock(&bch_register_lock);
++
++ return ret;
++}
++
+ static inline unsigned offset_to_stripe(struct bcache_device *d,
+ uint64_t offset)
+ {
+@@ -85,7 +104,7 @@ static inline void bch_writeback_add(struct cached_dev *dc)
+
+ void bcache_dev_sectors_dirty_add(struct cache_set *, unsigned, uint64_t, int);
+
+-void bch_sectors_dirty_init(struct cached_dev *dc);
++void bch_sectors_dirty_init(struct bcache_device *);
+ void bch_cached_dev_writeback_init(struct cached_dev *);
+ int bch_cached_dev_writeback_start(struct cached_dev *);
+
+diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
+index a7621a258936..7078447c8cd7 100644
+--- a/drivers/md/bitmap.c
++++ b/drivers/md/bitmap.c
+@@ -1965,6 +1965,11 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
+ long pages;
+ struct bitmap_page *new_bp;
+
++ if (bitmap->storage.file && !init) {
++ pr_info("md: cannot resize file-based bitmap\n");
++ return -EINVAL;
++ }
++
+ if (chunksize == 0) {
+ /* If there is enough space, leave the chunk size unchanged,
+ * else increase by factor of two until there is enough space.
+diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
+index 3e59b288b8a8..618e4e2b4207 100644
+--- a/drivers/media/usb/uvc/uvc_ctrl.c
++++ b/drivers/media/usb/uvc/uvc_ctrl.c
+@@ -2001,6 +2001,13 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
+ goto done;
+ }
+
++ /* Validate the user-provided bit-size and offset */
++ if (mapping->size > 32 ||
++ mapping->offset + mapping->size > ctrl->info.size * 8) {
++ ret = -EINVAL;
++ goto done;
++ }
++
+ list_for_each_entry(map, &ctrl->info.mappings, list) {
+ if (mapping->id == map->id) {
+ uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', "
+diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+index 4b777be714a4..4f002d0bebb1 100644
+--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
++++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+@@ -750,7 +750,8 @@ static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *u
+ copy_to_user(&up->u, &kp->u, sizeof(kp->u)) ||
+ put_user(kp->pending, &up->pending) ||
+ put_user(kp->sequence, &up->sequence) ||
+- compat_put_timespec(&kp->timestamp, &up->timestamp) ||
++ put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
++ put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) ||
+ put_user(kp->id, &up->id) ||
+ copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32)))
+ return -EFAULT;
+diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
+index 4ee080d49bc0..3ea651afa63d 100644
+--- a/drivers/net/ethernet/freescale/gianfar.c
++++ b/drivers/net/ethernet/freescale/gianfar.c
+@@ -3512,7 +3512,7 @@ static noinline void gfar_update_link_state(struct gfar_private *priv)
+ u32 tempval1 = gfar_read(®s->maccfg1);
+ u32 tempval = gfar_read(®s->maccfg2);
+ u32 ecntrl = gfar_read(®s->ecntrl);
+- u32 tx_flow_oldval = (tempval & MACCFG1_TX_FLOW);
++ u32 tx_flow_oldval = (tempval1 & MACCFG1_TX_FLOW);
+
+ if (phydev->duplex != priv->oldduplex) {
+ if (!(phydev->duplex))
+diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c b/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c
+index 829be21f97b2..be258d90de9e 100644
+--- a/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c
++++ b/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c
+@@ -724,7 +724,7 @@ static void ql_build_coredump_seg_header(
+ seg_hdr->cookie = MPI_COREDUMP_COOKIE;
+ seg_hdr->segNum = seg_number;
+ seg_hdr->segSize = seg_size;
+- memcpy(seg_hdr->description, desc, (sizeof(seg_hdr->description)) - 1);
++ strncpy(seg_hdr->description, desc, (sizeof(seg_hdr->description)) - 1);
+ }
+
+ /*
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index 34a59e79a33c..480c9366d6b6 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -750,6 +750,7 @@ static const struct usb_device_id products[] = {
+ {QMI_FIXED_INTF(0x19d2, 0x1428, 2)}, /* Telewell TW-LTE 4G v2 */
+ {QMI_FIXED_INTF(0x19d2, 0x2002, 4)}, /* ZTE (Vodafone) K3765-Z */
+ {QMI_FIXED_INTF(0x2001, 0x7e19, 4)}, /* D-Link DWM-221 B1 */
++ {QMI_FIXED_INTF(0x2001, 0x7e35, 4)}, /* D-Link DWM-222 */
+ {QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)}, /* Sierra Wireless MC7700 */
+ {QMI_FIXED_INTF(0x114f, 0x68a2, 8)}, /* Sierra Wireless MC7750 */
+ {QMI_FIXED_INTF(0x1199, 0x68a2, 8)}, /* Sierra Wireless MC7710 in QMI mode */
+diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
+index c0e454bb6a8d..e0e23470a380 100644
+--- a/drivers/net/wireless/ath/ath10k/core.c
++++ b/drivers/net/wireless/ath/ath10k/core.c
+@@ -1040,6 +1040,12 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode)
+ goto err_wmi_detach;
+ }
+
++ /* If firmware indicates Full Rx Reorder support it must be used in a
++ * slightly different manner. Let HTT code know.
++ */
++ ar->htt.rx_ring.in_ord_rx = !!(test_bit(WMI_SERVICE_RX_FULL_REORDER,
++ ar->wmi.svc_map));
++
+ status = ath10k_htt_rx_alloc(&ar->htt);
+ if (status) {
+ ath10k_err(ar, "failed to alloc htt rx: %d\n", status);
+@@ -1104,12 +1110,6 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode)
+ goto err_hif_stop;
+ }
+
+- /* If firmware indicates Full Rx Reorder support it must be used in a
+- * slightly different manner. Let HTT code know.
+- */
+- ar->htt.rx_ring.in_ord_rx = !!(test_bit(WMI_SERVICE_RX_FULL_REORDER,
+- ar->wmi.svc_map));
+-
+ status = ath10k_htt_rx_ring_refill(ar);
+ if (status) {
+ ath10k_err(ar, "failed to refill htt rx ring: %d\n", status);
+diff --git a/drivers/net/wireless/p54/fwio.c b/drivers/net/wireless/p54/fwio.c
+index 275408eaf95e..8a11dab8f4b3 100644
+--- a/drivers/net/wireless/p54/fwio.c
++++ b/drivers/net/wireless/p54/fwio.c
+@@ -489,7 +489,7 @@ int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
+
+ entry += sizeof(__le16);
+ chan->pa_points_per_curve = 8;
+- memset(chan->curve_data, 0, sizeof(*chan->curve_data));
++ memset(chan->curve_data, 0, sizeof(chan->curve_data));
+ memcpy(chan->curve_data, entry,
+ sizeof(struct p54_pa_curve_data_sample) *
+ min((u8)8, curve_data->points_per_channel));
+diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c
+index 5d54d16a59e7..040bf3c66958 100644
+--- a/drivers/net/wireless/ti/wl1251/main.c
++++ b/drivers/net/wireless/ti/wl1251/main.c
+@@ -1571,6 +1571,7 @@ struct ieee80211_hw *wl1251_alloc_hw(void)
+
+ wl->state = WL1251_STATE_OFF;
+ mutex_init(&wl->mutex);
++ spin_lock_init(&wl->wl_lock);
+
+ wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
+ wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
+diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
+index bf89754fe973..308a95ead432 100644
+--- a/drivers/of/fdt.c
++++ b/drivers/of/fdt.c
+@@ -413,7 +413,7 @@ static void __unflatten_device_tree(void *blob,
+ /* Allocate memory for the expanded device tree */
+ mem = dt_alloc(size + 4, __alignof__(struct device_node));
+ if (!mem)
+- return NULL;
++ return;
+
+ memset(mem, 0, size);
+
+diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
+index 7b0ca1551d7b..005ea632ba53 100644
+--- a/drivers/parisc/dino.c
++++ b/drivers/parisc/dino.c
+@@ -954,7 +954,7 @@ static int __init dino_probe(struct parisc_device *dev)
+
+ dino_dev->hba.dev = dev;
+ dino_dev->hba.base_addr = ioremap_nocache(hpa, 4096);
+- dino_dev->hba.lmmio_space_offset = 0; /* CPU addrs == bus addrs */
++ dino_dev->hba.lmmio_space_offset = PCI_F_EXTEND;
+ spin_lock_init(&dino_dev->dinosaur_pen);
+ dino_dev->hba.iommu = ccio_get_iommu(dev);
+
+diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c
+index 7d223e9080ef..77dddee2753a 100644
+--- a/drivers/pci/hotplug/shpchp_hpc.c
++++ b/drivers/pci/hotplug/shpchp_hpc.c
+@@ -1062,6 +1062,8 @@ int shpc_init(struct controller *ctrl, struct pci_dev *pdev)
+ if (rc) {
+ ctrl_info(ctrl, "Can't get msi for the hotplug controller\n");
+ ctrl_info(ctrl, "Use INTx for the hotplug controller\n");
++ } else {
++ pci_set_master(pdev);
+ }
+
+ rc = request_irq(ctrl->pci_dev->irq, shpc_isr, IRQF_SHARED,
+diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
+index 5d7fbe4e907e..296889dc193f 100644
+--- a/drivers/s390/scsi/zfcp_dbf.c
++++ b/drivers/s390/scsi/zfcp_dbf.c
+@@ -418,8 +418,8 @@ void zfcp_dbf_scsi(char *tag, struct scsi_cmnd *sc, struct zfcp_fsf_req *fsf)
+ rec->scsi_retries = sc->retries;
+ rec->scsi_allowed = sc->allowed;
+ rec->scsi_id = sc->device->id;
+- /* struct zfcp_dbf_scsi needs to be updated to handle 64bit LUNs */
+ rec->scsi_lun = (u32)sc->device->lun;
++ rec->scsi_lun_64_hi = (u32)(sc->device->lun >> 32);
+ rec->host_scribble = (unsigned long)sc->host_scribble;
+
+ memcpy(rec->scsi_opcode, sc->cmnd,
+@@ -427,19 +427,32 @@ void zfcp_dbf_scsi(char *tag, struct scsi_cmnd *sc, struct zfcp_fsf_req *fsf)
+
+ if (fsf) {
+ rec->fsf_req_id = fsf->req_id;
++ rec->pl_len = FCP_RESP_WITH_EXT;
+ fcp_rsp = (struct fcp_resp_with_ext *)
+ &(fsf->qtcb->bottom.io.fcp_rsp);
++ /* mandatory parts of FCP_RSP IU in this SCSI record */
+ memcpy(&rec->fcp_rsp, fcp_rsp, FCP_RESP_WITH_EXT);
+ if (fcp_rsp->resp.fr_flags & FCP_RSP_LEN_VAL) {
+ fcp_rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
+ rec->fcp_rsp_info = fcp_rsp_info->rsp_code;
++ rec->pl_len += be32_to_cpu(fcp_rsp->ext.fr_rsp_len);
+ }
+ if (fcp_rsp->resp.fr_flags & FCP_SNS_LEN_VAL) {
+- rec->pl_len = min((u16)SCSI_SENSE_BUFFERSIZE,
+- (u16)ZFCP_DBF_PAY_MAX_REC);
+- zfcp_dbf_pl_write(dbf, sc->sense_buffer, rec->pl_len,
+- "fcp_sns", fsf->req_id);
++ rec->pl_len += be32_to_cpu(fcp_rsp->ext.fr_sns_len);
+ }
++ /* complete FCP_RSP IU in associated PAYload record
++ * but only if there are optional parts
++ */
++ if (fcp_rsp->resp.fr_flags != 0)
++ zfcp_dbf_pl_write(
++ dbf, fcp_rsp,
++ /* at least one full PAY record
++ * but not beyond hardware response field
++ */
++ min_t(u16, max_t(u16, rec->pl_len,
++ ZFCP_DBF_PAY_MAX_REC),
++ FSF_FCP_RSP_SIZE),
++ "fcp_riu", fsf->req_id);
+ }
+
+ debug_event(dbf->scsi, 1, rec, sizeof(*rec));
+diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h
+index 0be3d48681ae..2039e7510a30 100644
+--- a/drivers/s390/scsi/zfcp_dbf.h
++++ b/drivers/s390/scsi/zfcp_dbf.h
+@@ -196,7 +196,7 @@ enum zfcp_dbf_scsi_id {
+ * @id: unique number of recovery record type
+ * @tag: identifier string specifying the location of initiation
+ * @scsi_id: scsi device id
+- * @scsi_lun: scsi device logical unit number
++ * @scsi_lun: scsi device logical unit number, low part of 64 bit, old 32 bit
+ * @scsi_result: scsi result
+ * @scsi_retries: current retry number of scsi request
+ * @scsi_allowed: allowed retries
+@@ -206,6 +206,7 @@ enum zfcp_dbf_scsi_id {
+ * @host_scribble: LLD specific data attached to SCSI request
+ * @pl_len: length of paload stored as zfcp_dbf_pay
+ * @fsf_rsp: response for fsf request
++ * @scsi_lun_64_hi: scsi device logical unit number, high part of 64 bit
+ */
+ struct zfcp_dbf_scsi {
+ u8 id;
+@@ -222,6 +223,7 @@ struct zfcp_dbf_scsi {
+ u64 host_scribble;
+ u16 pl_len;
+ struct fcp_resp_with_ext fcp_rsp;
++ u32 scsi_lun_64_hi;
+ } __packed;
+
+ /**
+@@ -291,7 +293,11 @@ void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req)
+ {
+ struct fsf_qtcb *qtcb = req->qtcb;
+
+- if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
++ if (unlikely(req->status & (ZFCP_STATUS_FSFREQ_DISMISSED |
++ ZFCP_STATUS_FSFREQ_ERROR))) {
++ zfcp_dbf_hba_fsf_resp("fs_rerr", 3, req);
++
++ } else if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
+ (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
+ zfcp_dbf_hba_fsf_resp("fs_perr", 1, req);
+
+diff --git a/drivers/s390/scsi/zfcp_fc.h b/drivers/s390/scsi/zfcp_fc.h
+index df2b541c8287..a2275825186f 100644
+--- a/drivers/s390/scsi/zfcp_fc.h
++++ b/drivers/s390/scsi/zfcp_fc.h
+@@ -4,7 +4,7 @@
+ * Fibre Channel related definitions and inline functions for the zfcp
+ * device driver
+ *
+- * Copyright IBM Corp. 2009
++ * Copyright IBM Corp. 2009, 2017
+ */
+
+ #ifndef ZFCP_FC_H
+@@ -279,6 +279,10 @@ void zfcp_fc_eval_fcp_rsp(struct fcp_resp_with_ext *fcp_rsp,
+ !(rsp_flags & FCP_SNS_LEN_VAL) &&
+ fcp_rsp->resp.fr_status == SAM_STAT_GOOD)
+ set_host_byte(scsi, DID_ERROR);
++ } else if (unlikely(rsp_flags & FCP_RESID_OVER)) {
++ /* FCP_DL was not sufficient for SCSI data length */
++ if (fcp_rsp->resp.fr_status == SAM_STAT_GOOD)
++ set_host_byte(scsi, DID_ERROR);
+ }
+ }
+
+diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
+index 21ec5e2f584c..7d77c318cc16 100644
+--- a/drivers/s390/scsi/zfcp_fsf.c
++++ b/drivers/s390/scsi/zfcp_fsf.c
+@@ -2246,7 +2246,8 @@ int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
+ fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
+ zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);
+
+- if (scsi_prot_sg_count(scsi_cmnd)) {
++ if ((scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) &&
++ scsi_prot_sg_count(scsi_cmnd)) {
+ zfcp_qdio_set_data_div(qdio, &req->qdio_req,
+ scsi_prot_sg_count(scsi_cmnd));
+ retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
+diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
+index 75f4bfc2b98a..6de09147e791 100644
+--- a/drivers/s390/scsi/zfcp_scsi.c
++++ b/drivers/s390/scsi/zfcp_scsi.c
+@@ -224,8 +224,10 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
+
+ zfcp_erp_wait(adapter);
+ ret = fc_block_scsi_eh(scpnt);
+- if (ret)
++ if (ret) {
++ zfcp_dbf_scsi_devreset("fiof", scpnt, tm_flags, NULL);
+ return ret;
++ }
+
+ if (!(atomic_read(&adapter->status) &
+ ZFCP_STATUS_COMMON_RUNNING)) {
+@@ -233,8 +235,10 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
+ return SUCCESS;
+ }
+ }
+- if (!fsf_req)
++ if (!fsf_req) {
++ zfcp_dbf_scsi_devreset("reqf", scpnt, tm_flags, NULL);
+ return FAILED;
++ }
+
+ wait_for_completion(&fsf_req->completion);
+
+diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c
+index 1910100638a2..00602abec0ea 100644
+--- a/drivers/scsi/isci/remote_node_context.c
++++ b/drivers/scsi/isci/remote_node_context.c
+@@ -66,6 +66,9 @@ const char *rnc_state_name(enum scis_sds_remote_node_context_states state)
+ {
+ static const char * const strings[] = RNC_STATES;
+
++ if (state >= ARRAY_SIZE(strings))
++ return "UNKNOWN";
++
+ return strings[state];
+ }
+ #undef C
+diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
+index 0e5b3584e918..4da8963315c7 100644
+--- a/drivers/scsi/lpfc/lpfc_els.c
++++ b/drivers/scsi/lpfc/lpfc_els.c
+@@ -1068,7 +1068,10 @@ stop_rr_fcf_flogi:
+ lpfc_sli4_unreg_all_rpis(vport);
+ }
+ }
+- lpfc_issue_reg_vfi(vport);
++
++ /* Do not register VFI if the driver aborted FLOGI */
++ if (!lpfc_error_lost_link(irsp))
++ lpfc_issue_reg_vfi(vport);
+ lpfc_nlp_put(ndlp);
+ goto out;
+ }
+diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
+index a991690167aa..b66a7a6a601d 100644
+--- a/drivers/scsi/megaraid/megaraid_sas_base.c
++++ b/drivers/scsi/megaraid/megaraid_sas_base.c
+@@ -1709,9 +1709,12 @@ void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
+ if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
+ cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
+ if (cmd_mfi->sync_cmd &&
+- cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
++ (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
++ cmd_mfi->frame->hdr.cmd_status =
++ MFI_STAT_WRONG_STATE;
+ megasas_complete_cmd(instance,
+ cmd_mfi, DID_OK);
++ }
+ }
+ }
+ } else {
+diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
+index c1b2e86839ae..e9cd3013dcd0 100644
+--- a/drivers/scsi/qla2xxx/qla_attr.c
++++ b/drivers/scsi/qla2xxx/qla_attr.c
+@@ -404,6 +404,8 @@ qla2x00_sysfs_write_optrom_ctl(struct file *filp, struct kobject *kobj,
+ return -EINVAL;
+ if (start > ha->optrom_size)
+ return -EINVAL;
++ if (size > ha->optrom_size - start)
++ size = ha->optrom_size - start;
+
+ mutex_lock(&ha->optrom_mutex);
+ switch (val) {
+@@ -429,8 +431,7 @@ qla2x00_sysfs_write_optrom_ctl(struct file *filp, struct kobject *kobj,
+ }
+
+ ha->optrom_region_start = start;
+- ha->optrom_region_size = start + size > ha->optrom_size ?
+- ha->optrom_size - start : size;
++ ha->optrom_region_size = start + size;
+
+ ha->optrom_state = QLA_SREADING;
+ ha->optrom_buffer = vmalloc(ha->optrom_region_size);
+@@ -503,8 +504,7 @@ qla2x00_sysfs_write_optrom_ctl(struct file *filp, struct kobject *kobj,
+ }
+
+ ha->optrom_region_start = start;
+- ha->optrom_region_size = start + size > ha->optrom_size ?
+- ha->optrom_size - start : size;
++ ha->optrom_region_size = start + size;
+
+ ha->optrom_state = QLA_SWRITING;
+ ha->optrom_buffer = vmalloc(ha->optrom_region_size);
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index c94191369452..fbdba7925723 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -133,7 +133,7 @@ struct sg_device; /* forward declarations */
+ struct sg_fd;
+
+ typedef struct sg_request { /* SG_MAX_QUEUE requests outstanding per file */
+- struct sg_request *nextrp; /* NULL -> tail request (slist) */
++ struct list_head entry; /* list entry */
+ struct sg_fd *parentfp; /* NULL -> not in use */
+ Sg_scatter_hold data; /* hold buffer, perhaps scatter list */
+ sg_io_hdr_t header; /* scsi command+info, see <scsi/sg.h> */
+@@ -153,11 +153,11 @@ typedef struct sg_fd { /* holds the state of a file descriptor */
+ struct sg_device *parentdp; /* owning device */
+ wait_queue_head_t read_wait; /* queue read until command done */
+ rwlock_t rq_list_lock; /* protect access to list in req_arr */
++ struct mutex f_mutex; /* protect against changes in this fd */
+ int timeout; /* defaults to SG_DEFAULT_TIMEOUT */
+ int timeout_user; /* defaults to SG_DEFAULT_TIMEOUT_USER */
+ Sg_scatter_hold reserve; /* buffer held for this file descriptor */
+- unsigned save_scat_len; /* original length of trunc. scat. element */
+- Sg_request *headrp; /* head of request slist, NULL->empty */
++ struct list_head rq_list; /* head of request list */
+ struct fasync_struct *async_qp; /* used by asynchronous notification */
+ Sg_request req_arr[SG_MAX_QUEUE]; /* used as singly-linked list */
+ char low_dma; /* as in parent but possibly overridden to 1 */
+@@ -166,6 +166,7 @@ typedef struct sg_fd { /* holds the state of a file descriptor */
+ unsigned char next_cmd_len; /* 0: automatic, >0: use on next write() */
+ char keep_orphan; /* 0 -> drop orphan (def), 1 -> keep for read() */
+ char mmap_called; /* 0 -> mmap() never called on this fd */
++ char res_in_use; /* 1 -> 'reserve' array in use */
+ struct kref f_ref;
+ struct execute_work ew;
+ } Sg_fd;
+@@ -209,7 +210,6 @@ static void sg_remove_sfp(struct kref *);
+ static Sg_request *sg_get_rq_mark(Sg_fd * sfp, int pack_id);
+ static Sg_request *sg_add_request(Sg_fd * sfp);
+ static int sg_remove_request(Sg_fd * sfp, Sg_request * srp);
+-static int sg_res_in_use(Sg_fd * sfp);
+ static Sg_device *sg_get_dev(int dev);
+ static void sg_device_destroy(struct kref *kref);
+
+@@ -625,6 +625,7 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
+ }
+ buf += SZ_SG_HEADER;
+ __get_user(opcode, buf);
++ mutex_lock(&sfp->f_mutex);
+ if (sfp->next_cmd_len > 0) {
+ cmd_size = sfp->next_cmd_len;
+ sfp->next_cmd_len = 0; /* reset so only this write() effected */
+@@ -633,6 +634,7 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
+ if ((opcode >= 0xc0) && old_hdr.twelve_byte)
+ cmd_size = 12;
+ }
++ mutex_unlock(&sfp->f_mutex);
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sdp,
+ "sg_write: scsi opcode=0x%02x, cmd_size=%d\n", (int) opcode, cmd_size));
+ /* Determine buffer size. */
+@@ -732,7 +734,7 @@ sg_new_write(Sg_fd *sfp, struct file *file, const char __user *buf,
+ sg_remove_request(sfp, srp);
+ return -EINVAL; /* either MMAP_IO or DIRECT_IO (not both) */
+ }
+- if (sg_res_in_use(sfp)) {
++ if (sfp->res_in_use) {
+ sg_remove_request(sfp, srp);
+ return -EBUSY; /* reserve buffer already being used */
+ }
+@@ -831,6 +833,39 @@ static int max_sectors_bytes(struct request_queue *q)
+ return max_sectors << 9;
+ }
+
++static void
++sg_fill_request_table(Sg_fd *sfp, sg_req_info_t *rinfo)
++{
++ Sg_request *srp;
++ int val;
++ unsigned int ms;
++
++ val = 0;
++ list_for_each_entry(srp, &sfp->rq_list, entry) {
++ if (val > SG_MAX_QUEUE)
++ break;
++ rinfo[val].req_state = srp->done + 1;
++ rinfo[val].problem =
++ srp->header.masked_status &
++ srp->header.host_status &
++ srp->header.driver_status;
++ if (srp->done)
++ rinfo[val].duration =
++ srp->header.duration;
++ else {
++ ms = jiffies_to_msecs(jiffies);
++ rinfo[val].duration =
++ (ms > srp->header.duration) ?
++ (ms - srp->header.duration) : 0;
++ }
++ rinfo[val].orphan = srp->orphan;
++ rinfo[val].sg_io_owned = srp->sg_io_owned;
++ rinfo[val].pack_id = srp->header.pack_id;
++ rinfo[val].usr_ptr = srp->header.usr_ptr;
++ val++;
++ }
++}
++
+ static long
+ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
+ {
+@@ -896,7 +931,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
+ return result;
+ if (val) {
+ sfp->low_dma = 1;
+- if ((0 == sfp->low_dma) && (0 == sg_res_in_use(sfp))) {
++ if ((0 == sfp->low_dma) && !sfp->res_in_use) {
+ val = (int) sfp->reserve.bufflen;
+ sg_remove_scat(sfp, &sfp->reserve);
+ sg_build_reserve(sfp, val);
+@@ -942,7 +977,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
+ if (!access_ok(VERIFY_WRITE, ip, sizeof (int)))
+ return -EFAULT;
+ read_lock_irqsave(&sfp->rq_list_lock, iflags);
+- for (srp = sfp->headrp; srp; srp = srp->nextrp) {
++ list_for_each_entry(srp, &sfp->rq_list, entry) {
+ if ((1 == srp->done) && (!srp->sg_io_owned)) {
+ read_unlock_irqrestore(&sfp->rq_list_lock,
+ iflags);
+@@ -955,7 +990,8 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
+ return 0;
+ case SG_GET_NUM_WAITING:
+ read_lock_irqsave(&sfp->rq_list_lock, iflags);
+- for (val = 0, srp = sfp->headrp; srp; srp = srp->nextrp) {
++ val = 0;
++ list_for_each_entry(srp, &sfp->rq_list, entry) {
+ if ((1 == srp->done) && (!srp->sg_io_owned))
+ ++val;
+ }
+@@ -971,12 +1007,18 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
+ return -EINVAL;
+ val = min_t(int, val,
+ max_sectors_bytes(sdp->device->request_queue));
++ mutex_lock(&sfp->f_mutex);
+ if (val != sfp->reserve.bufflen) {
+- if (sg_res_in_use(sfp) || sfp->mmap_called)
++ if (sfp->mmap_called ||
++ sfp->res_in_use) {
++ mutex_unlock(&sfp->f_mutex);
+ return -EBUSY;
++ }
++
+ sg_remove_scat(sfp, &sfp->reserve);
+ sg_build_reserve(sfp, val);
+ }
++ mutex_unlock(&sfp->f_mutex);
+ return 0;
+ case SG_GET_RESERVED_SIZE:
+ val = min_t(int, sfp->reserve.bufflen,
+@@ -1017,42 +1059,15 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
+ return -EFAULT;
+ else {
+ sg_req_info_t *rinfo;
+- unsigned int ms;
+
+- rinfo = kmalloc(SZ_SG_REQ_INFO * SG_MAX_QUEUE,
+- GFP_KERNEL);
++ rinfo = kzalloc(SZ_SG_REQ_INFO * SG_MAX_QUEUE,
++ GFP_KERNEL);
+ if (!rinfo)
+ return -ENOMEM;
+ read_lock_irqsave(&sfp->rq_list_lock, iflags);
+- for (srp = sfp->headrp, val = 0; val < SG_MAX_QUEUE;
+- ++val, srp = srp ? srp->nextrp : srp) {
+- memset(&rinfo[val], 0, SZ_SG_REQ_INFO);
+- if (srp) {
+- rinfo[val].req_state = srp->done + 1;
+- rinfo[val].problem =
+- srp->header.masked_status &
+- srp->header.host_status &
+- srp->header.driver_status;
+- if (srp->done)
+- rinfo[val].duration =
+- srp->header.duration;
+- else {
+- ms = jiffies_to_msecs(jiffies);
+- rinfo[val].duration =
+- (ms > srp->header.duration) ?
+- (ms - srp->header.duration) : 0;
+- }
+- rinfo[val].orphan = srp->orphan;
+- rinfo[val].sg_io_owned =
+- srp->sg_io_owned;
+- rinfo[val].pack_id =
+- srp->header.pack_id;
+- rinfo[val].usr_ptr =
+- srp->header.usr_ptr;
+- }
+- }
++ sg_fill_request_table(sfp, rinfo);
+ read_unlock_irqrestore(&sfp->rq_list_lock, iflags);
+- result = __copy_to_user(p, rinfo,
++ result = __copy_to_user(p, rinfo,
+ SZ_SG_REQ_INFO * SG_MAX_QUEUE);
+ result = result ? -EFAULT : 0;
+ kfree(rinfo);
+@@ -1158,7 +1173,7 @@ sg_poll(struct file *filp, poll_table * wait)
+ return POLLERR;
+ poll_wait(filp, &sfp->read_wait, wait);
+ read_lock_irqsave(&sfp->rq_list_lock, iflags);
+- for (srp = sfp->headrp; srp; srp = srp->nextrp) {
++ list_for_each_entry(srp, &sfp->rq_list, entry) {
+ /* if any read waiting, flag it */
+ if ((0 == res) && (1 == srp->done) && (!srp->sg_io_owned))
+ res = POLLIN | POLLRDNORM;
+@@ -1239,6 +1254,7 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
+ unsigned long req_sz, len, sa;
+ Sg_scatter_hold *rsv_schp;
+ int k, length;
++ int ret = 0;
+
+ if ((!filp) || (!vma) || (!(sfp = (Sg_fd *) filp->private_data)))
+ return -ENXIO;
+@@ -1249,8 +1265,11 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
+ if (vma->vm_pgoff)
+ return -EINVAL; /* want no offset */
+ rsv_schp = &sfp->reserve;
+- if (req_sz > rsv_schp->bufflen)
+- return -ENOMEM; /* cannot map more than reserved buffer */
++ mutex_lock(&sfp->f_mutex);
++ if (req_sz > rsv_schp->bufflen) {
++ ret = -ENOMEM; /* cannot map more than reserved buffer */
++ goto out;
++ }
+
+ sa = vma->vm_start;
+ length = 1 << (PAGE_SHIFT + rsv_schp->page_order);
+@@ -1264,7 +1283,9 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
+ vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+ vma->vm_private_data = sfp;
+ vma->vm_ops = &sg_mmap_vm_ops;
+- return 0;
++out:
++ mutex_unlock(&sfp->f_mutex);
++ return ret;
+ }
+
+ static void
+@@ -1731,13 +1752,25 @@ sg_start_req(Sg_request *srp, unsigned char *cmd)
+ md = &map_data;
+
+ if (md) {
+- if (!sg_res_in_use(sfp) && dxfer_len <= rsv_schp->bufflen)
++ mutex_lock(&sfp->f_mutex);
++ if (dxfer_len <= rsv_schp->bufflen &&
++ !sfp->res_in_use) {
++ sfp->res_in_use = 1;
+ sg_link_reserve(sfp, srp, dxfer_len);
+- else {
++ } else if (hp->flags & SG_FLAG_MMAP_IO) {
++ res = -EBUSY; /* sfp->res_in_use == 1 */
++ if (dxfer_len > rsv_schp->bufflen)
++ res = -ENOMEM;
++ mutex_unlock(&sfp->f_mutex);
++ return res;
++ } else {
+ res = sg_build_indirect(req_schp, sfp, dxfer_len);
+- if (res)
++ if (res) {
++ mutex_unlock(&sfp->f_mutex);
+ return res;
++ }
+ }
++ mutex_unlock(&sfp->f_mutex);
+
+ md->pages = req_schp->pages;
+ md->page_order = req_schp->page_order;
+@@ -2026,8 +2059,9 @@ sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp)
+ req_schp->pages = NULL;
+ req_schp->page_order = 0;
+ req_schp->sglist_len = 0;
+- sfp->save_scat_len = 0;
+ srp->res_used = 0;
++ /* Called without mutex lock to avoid deadlock */
++ sfp->res_in_use = 0;
+ }
+
+ static Sg_request *
+@@ -2037,7 +2071,7 @@ sg_get_rq_mark(Sg_fd * sfp, int pack_id)
+ unsigned long iflags;
+
+ write_lock_irqsave(&sfp->rq_list_lock, iflags);
+- for (resp = sfp->headrp; resp; resp = resp->nextrp) {
++ list_for_each_entry(resp, &sfp->rq_list, entry) {
+ /* look for requests that are ready + not SG_IO owned */
+ if ((1 == resp->done) && (!resp->sg_io_owned) &&
+ ((-1 == pack_id) || (resp->header.pack_id == pack_id))) {
+@@ -2055,70 +2089,45 @@ sg_add_request(Sg_fd * sfp)
+ {
+ int k;
+ unsigned long iflags;
+- Sg_request *resp;
+ Sg_request *rp = sfp->req_arr;
+
+ write_lock_irqsave(&sfp->rq_list_lock, iflags);
+- resp = sfp->headrp;
+- if (!resp) {
+- memset(rp, 0, sizeof (Sg_request));
+- rp->parentfp = sfp;
+- resp = rp;
+- sfp->headrp = resp;
+- } else {
+- if (0 == sfp->cmd_q)
+- resp = NULL; /* command queuing disallowed */
+- else {
+- for (k = 0; k < SG_MAX_QUEUE; ++k, ++rp) {
+- if (!rp->parentfp)
+- break;
+- }
+- if (k < SG_MAX_QUEUE) {
+- memset(rp, 0, sizeof (Sg_request));
+- rp->parentfp = sfp;
+- while (resp->nextrp)
+- resp = resp->nextrp;
+- resp->nextrp = rp;
+- resp = rp;
+- } else
+- resp = NULL;
++ if (!list_empty(&sfp->rq_list)) {
++ if (!sfp->cmd_q)
++ goto out_unlock;
++
++ for (k = 0; k < SG_MAX_QUEUE; ++k, ++rp) {
++ if (!rp->parentfp)
++ break;
+ }
++ if (k >= SG_MAX_QUEUE)
++ goto out_unlock;
+ }
+- if (resp) {
+- resp->nextrp = NULL;
+- resp->header.duration = jiffies_to_msecs(jiffies);
+- }
++ memset(rp, 0, sizeof (Sg_request));
++ rp->parentfp = sfp;
++ rp->header.duration = jiffies_to_msecs(jiffies);
++ list_add_tail(&rp->entry, &sfp->rq_list);
+ write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
+- return resp;
++ return rp;
++out_unlock:
++ write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
++ return NULL;
+ }
+
+ /* Return of 1 for found; 0 for not found */
+ static int
+ sg_remove_request(Sg_fd * sfp, Sg_request * srp)
+ {
+- Sg_request *prev_rp;
+- Sg_request *rp;
+ unsigned long iflags;
+ int res = 0;
+
+- if ((!sfp) || (!srp) || (!sfp->headrp))
++ if (!sfp || !srp || list_empty(&sfp->rq_list))
+ return res;
+ write_lock_irqsave(&sfp->rq_list_lock, iflags);
+- prev_rp = sfp->headrp;
+- if (srp == prev_rp) {
+- sfp->headrp = prev_rp->nextrp;
+- prev_rp->parentfp = NULL;
++ if (!list_empty(&srp->entry)) {
++ list_del(&srp->entry);
++ srp->parentfp = NULL;
+ res = 1;
+- } else {
+- while ((rp = prev_rp->nextrp)) {
+- if (srp == rp) {
+- prev_rp->nextrp = rp->nextrp;
+- rp->parentfp = NULL;
+- res = 1;
+- break;
+- }
+- prev_rp = rp;
+- }
+ }
+ write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
+ return res;
+@@ -2137,8 +2146,9 @@ sg_add_sfp(Sg_device * sdp)
+
+ init_waitqueue_head(&sfp->read_wait);
+ rwlock_init(&sfp->rq_list_lock);
+-
++ INIT_LIST_HEAD(&sfp->rq_list);
+ kref_init(&sfp->f_ref);
++ mutex_init(&sfp->f_mutex);
+ sfp->timeout = SG_DEFAULT_TIMEOUT;
+ sfp->timeout_user = SG_DEFAULT_TIMEOUT_USER;
+ sfp->force_packid = SG_DEF_FORCE_PACK_ID;
+@@ -2177,10 +2187,13 @@ sg_remove_sfp_usercontext(struct work_struct *work)
+ {
+ struct sg_fd *sfp = container_of(work, struct sg_fd, ew.work);
+ struct sg_device *sdp = sfp->parentdp;
++ Sg_request *srp;
+
+ /* Cleanup any responses which were never read(). */
+- while (sfp->headrp)
+- sg_finish_rem_req(sfp->headrp);
++ while (!list_empty(&sfp->rq_list)) {
++ srp = list_first_entry(&sfp->rq_list, Sg_request, entry);
++ sg_finish_rem_req(srp);
++ }
+
+ if (sfp->reserve.bufflen > 0) {
+ SCSI_LOG_TIMEOUT(6, sg_printk(KERN_INFO, sdp,
+@@ -2214,20 +2227,6 @@ sg_remove_sfp(struct kref *kref)
+ schedule_work(&sfp->ew.work);
+ }
+
+-static int
+-sg_res_in_use(Sg_fd * sfp)
+-{
+- const Sg_request *srp;
+- unsigned long iflags;
+-
+- read_lock_irqsave(&sfp->rq_list_lock, iflags);
+- for (srp = sfp->headrp; srp; srp = srp->nextrp)
+- if (srp->res_used)
+- break;
+- read_unlock_irqrestore(&sfp->rq_list_lock, iflags);
+- return srp ? 1 : 0;
+-}
+-
+ #ifdef CONFIG_SCSI_PROC_FS
+ static int
+ sg_idr_max_id(int id, void *p, void *data)
+@@ -2597,7 +2596,7 @@ static int sg_proc_seq_show_devstrs(struct seq_file *s, void *v)
+ /* must be called while holding sg_index_lock */
+ static void sg_proc_debug_helper(struct seq_file *s, Sg_device * sdp)
+ {
+- int k, m, new_interface, blen, usg;
++ int k, new_interface, blen, usg;
+ Sg_request *srp;
+ Sg_fd *fp;
+ const sg_io_hdr_t *hp;
+@@ -2617,13 +2616,11 @@ static void sg_proc_debug_helper(struct seq_file *s, Sg_device * sdp)
+ seq_printf(s, " cmd_q=%d f_packid=%d k_orphan=%d closed=0\n",
+ (int) fp->cmd_q, (int) fp->force_packid,
+ (int) fp->keep_orphan);
+- for (m = 0, srp = fp->headrp;
+- srp != NULL;
+- ++m, srp = srp->nextrp) {
++ list_for_each_entry(srp, &fp->rq_list, entry) {
+ hp = &srp->header;
+ new_interface = (hp->interface_id == '\0') ? 0 : 1;
+ if (srp->res_used) {
+- if (new_interface &&
++ if (new_interface &&
+ (SG_FLAG_MMAP_IO & hp->flags))
+ cp = " mmap>> ";
+ else
+@@ -2654,7 +2651,7 @@ static void sg_proc_debug_helper(struct seq_file *s, Sg_device * sdp)
+ seq_printf(s, "ms sgat=%d op=0x%02x\n", usg,
+ (int) srp->data.cmd_opcode);
+ }
+- if (0 == m)
++ if (list_empty(&fp->rq_list))
+ seq_puts(s, " No requests active\n");
+ read_unlock(&fp->rq_list_lock);
+ }
+diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
+index 6c52d1411a73..51a0cc047b5f 100644
+--- a/drivers/scsi/storvsc_drv.c
++++ b/drivers/scsi/storvsc_drv.c
+@@ -1699,6 +1699,8 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
+ ret = storvsc_do_io(dev, cmd_request);
+
+ if (ret == -EAGAIN) {
++ if (payload_sz > sizeof(cmd_request->mpb))
++ kfree(payload);
+ /* no more space */
+
+ if (cmd_request->bounce_sgl_count)
+diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+index 4273e34ff3ea..9af6ce2b6782 100644
+--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
++++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+@@ -50,6 +50,7 @@ static struct usb_device_id rtw_usb_id_tbl[] = {
+ {USB_DEVICE(0x2001, 0x3311)}, /* DLink GO-USB-N150 REV B1 */
+ {USB_DEVICE(0x2357, 0x010c)}, /* TP-Link TL-WN722N v2 */
+ {USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
++ {USB_DEVICE(USB_VENDER_ID_REALTEK, 0xffef)}, /* Rosewill RNX-N150NUB */
+ {} /* Terminating entry */
+ };
+
+diff --git a/drivers/staging/rts5208/rtsx_scsi.c b/drivers/staging/rts5208/rtsx_scsi.c
+index 8a5d6a8e780f..ba32ac8d1747 100644
+--- a/drivers/staging/rts5208/rtsx_scsi.c
++++ b/drivers/staging/rts5208/rtsx_scsi.c
+@@ -414,7 +414,7 @@ void set_sense_data(struct rtsx_chip *chip, unsigned int lun, u8 err_code,
+ sense->ascq = ascq;
+ if (sns_key_info0 != 0) {
+ sense->sns_key_info[0] = SKSV | sns_key_info0;
+- sense->sns_key_info[1] = (sns_key_info1 & 0xf0) >> 8;
++ sense->sns_key_info[1] = (sns_key_info1 & 0xf0) >> 4;
+ sense->sns_key_info[2] = sns_key_info1 & 0x0f;
+ }
+ }
+diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
+index aa9fad4f35b9..25c15910af77 100644
+--- a/drivers/tty/tty_buffer.c
++++ b/drivers/tty/tty_buffer.c
+@@ -355,6 +355,32 @@ int tty_insert_flip_string_flags(struct tty_port *port,
+ }
+ EXPORT_SYMBOL(tty_insert_flip_string_flags);
+
++/**
++ * __tty_insert_flip_char - Add one character to the tty buffer
++ * @port: tty port
++ * @ch: character
++ * @flag: flag byte
++ *
++ * Queue a single byte to the tty buffering, with an optional flag.
++ * This is the slow path of tty_insert_flip_char.
++ */
++int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag)
++{
++ struct tty_buffer *tb;
++ int flags = (flag == TTY_NORMAL) ? TTYB_NORMAL : 0;
++
++ if (!__tty_buffer_request_room(port, 1, flags))
++ return 0;
++
++ tb = port->buf.tail;
++ if (~tb->flags & TTYB_NORMAL)
++ *flag_buf_ptr(tb, tb->used) = flag;
++ *char_buf_ptr(tb, tb->used++) = ch;
++
++ return 1;
++}
++EXPORT_SYMBOL(__tty_insert_flip_char);
++
+ /**
+ * tty_schedule_flip - push characters to ldisc
+ * @port: tty port to push from
+diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
+index eb8fdc75843b..a235e9ab932c 100644
+--- a/drivers/usb/core/devio.c
++++ b/drivers/usb/core/devio.c
+@@ -519,6 +519,8 @@ static void async_completed(struct urb *urb)
+ if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&
+ as->status != -ENOENT)
+ cancel_bulk_urbs(ps, as->bulk_addr);
++
++ wake_up(&ps->wait);
+ spin_unlock(&ps->lock);
+
+ if (signr) {
+@@ -526,8 +528,6 @@ static void async_completed(struct urb *urb)
+ put_pid(pid);
+ put_cred(cred);
+ }
+-
+- wake_up(&ps->wait);
+ }
+
+ static void destroy_async(struct usb_dev_state *ps, struct list_head *list)
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 574da2b4529c..82806e311202 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -57,8 +57,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* Microsoft LifeCam-VX700 v2.0 */
+ { USB_DEVICE(0x045e, 0x0770), .driver_info = USB_QUIRK_RESET_RESUME },
+
+- /* Logitech HD Pro Webcams C920 and C930e */
++ /* Logitech HD Pro Webcams C920, C920-C and C930e */
+ { USB_DEVICE(0x046d, 0x082d), .driver_info = USB_QUIRK_DELAY_INIT },
++ { USB_DEVICE(0x046d, 0x0841), .driver_info = USB_QUIRK_DELAY_INIT },
+ { USB_DEVICE(0x046d, 0x0843), .driver_info = USB_QUIRK_DELAY_INIT },
+
+ /* Logitech ConferenceCam CC3000e */
+@@ -217,6 +218,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ { USB_DEVICE(0x1a0a, 0x0200), .driver_info =
+ USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
+
++ /* Corsair Strafe RGB */
++ { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT },
++
+ /* Acer C120 LED Projector */
+ { USB_DEVICE(0x1de1, 0xc102), .driver_info = USB_QUIRK_NO_LPM },
+
+diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
+index 2776cfe64c09..ef9cf4a21afe 100644
+--- a/drivers/usb/core/usb-acpi.c
++++ b/drivers/usb/core/usb-acpi.c
+@@ -127,6 +127,22 @@ out:
+ */
+ #define USB_ACPI_LOCATION_VALID (1 << 31)
+
++static struct acpi_device *usb_acpi_find_port(struct acpi_device *parent,
++ int raw)
++{
++ struct acpi_device *adev;
++
++ if (!parent)
++ return NULL;
++
++ list_for_each_entry(adev, &parent->children, node) {
++ if (acpi_device_adr(adev) == raw)
++ return adev;
++ }
++
++ return acpi_find_child_device(parent, raw, false);
++}
++
+ static struct acpi_device *usb_acpi_find_companion(struct device *dev)
+ {
+ struct usb_device *udev;
+@@ -174,8 +190,10 @@ static struct acpi_device *usb_acpi_find_companion(struct device *dev)
+ int raw;
+
+ raw = usb_hcd_find_raw_port_number(hcd, port1);
+- adev = acpi_find_child_device(ACPI_COMPANION(&udev->dev),
+- raw, false);
++
++ adev = usb_acpi_find_port(ACPI_COMPANION(&udev->dev),
++ raw);
++
+ if (!adev)
+ return NULL;
+ } else {
+@@ -186,7 +204,9 @@ static struct acpi_device *usb_acpi_find_companion(struct device *dev)
+ return NULL;
+
+ acpi_bus_get_device(parent_handle, &adev);
+- adev = acpi_find_child_device(adev, port1, false);
++
++ adev = usb_acpi_find_port(adev, port1);
++
+ if (!adev)
+ return NULL;
+ }
+diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
+index 03b9a372636f..1fc6f478a02c 100644
+--- a/drivers/usb/host/pci-quirks.c
++++ b/drivers/usb/host/pci-quirks.c
+@@ -133,29 +133,30 @@ static int amd_chipset_sb_type_init(struct amd_chipset_info *pinfo)
+ pinfo->sb_type.gen = AMD_CHIPSET_SB700;
+ else if (rev >= 0x40 && rev <= 0x4f)
+ pinfo->sb_type.gen = AMD_CHIPSET_SB800;
+- }
+- pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+- 0x145c, NULL);
+- if (pinfo->smbus_dev) {
+- pinfo->sb_type.gen = AMD_CHIPSET_TAISHAN;
+ } else {
+ pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+ PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
+
+- if (!pinfo->smbus_dev) {
+- pinfo->sb_type.gen = NOT_AMD_CHIPSET;
+- return 0;
++ if (pinfo->smbus_dev) {
++ rev = pinfo->smbus_dev->revision;
++ if (rev >= 0x11 && rev <= 0x14)
++ pinfo->sb_type.gen = AMD_CHIPSET_HUDSON2;
++ else if (rev >= 0x15 && rev <= 0x18)
++ pinfo->sb_type.gen = AMD_CHIPSET_BOLTON;
++ else if (rev >= 0x39 && rev <= 0x3a)
++ pinfo->sb_type.gen = AMD_CHIPSET_YANGTZE;
++ } else {
++ pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
++ 0x145c, NULL);
++ if (pinfo->smbus_dev) {
++ rev = pinfo->smbus_dev->revision;
++ pinfo->sb_type.gen = AMD_CHIPSET_TAISHAN;
++ } else {
++ pinfo->sb_type.gen = NOT_AMD_CHIPSET;
++ return 0;
++ }
+ }
+-
+- rev = pinfo->smbus_dev->revision;
+- if (rev >= 0x11 && rev <= 0x14)
+- pinfo->sb_type.gen = AMD_CHIPSET_HUDSON2;
+- else if (rev >= 0x15 && rev <= 0x18)
+- pinfo->sb_type.gen = AMD_CHIPSET_BOLTON;
+- else if (rev >= 0x39 && rev <= 0x3a)
+- pinfo->sb_type.gen = AMD_CHIPSET_YANGTZE;
+ }
+-
+ pinfo->sb_type.rev = rev;
+ return 1;
+ }
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index f08b35819666..a0fbc4e5a272 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -2020,6 +2020,7 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x02, 0x01) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x00, 0x00) },
+ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff) }, /* D-Link DWM-158 */
++ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d0e, 0xff) }, /* D-Link DWM-157 C1 */
+ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e19, 0xff), /* D-Link DWM-221 B1 */
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e35, 0xff), /* D-Link DWM-222 */
+diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
+index a40b454aea44..4f6a3afc45f4 100644
+--- a/fs/btrfs/super.c
++++ b/fs/btrfs/super.c
+@@ -1593,6 +1593,8 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
+ goto restore;
+ }
+
++ btrfs_qgroup_rescan_resume(fs_info);
++
+ if (!fs_info->uuid_root) {
+ btrfs_info(fs_info, "creating UUID tree");
+ ret = btrfs_create_uuid_tree(fs_info);
+diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
+index 26a3b389a265..297e05c9e2b0 100644
+--- a/fs/cifs/dir.c
++++ b/fs/cifs/dir.c
+@@ -183,15 +183,20 @@ cifs_bp_rename_retry:
+ }
+
+ /*
++ * Don't allow path components longer than the server max.
+ * Don't allow the separator character in a path component.
+ * The VFS will not allow "/", but "\" is allowed by posix.
+ */
+ static int
+-check_name(struct dentry *direntry)
++check_name(struct dentry *direntry, struct cifs_tcon *tcon)
+ {
+ struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
+ int i;
+
++ if (unlikely(direntry->d_name.len >
++ le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength)))
++ return -ENAMETOOLONG;
++
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) {
+ for (i = 0; i < direntry->d_name.len; i++) {
+ if (direntry->d_name.name[i] == '\\') {
+@@ -489,10 +494,6 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
+ return finish_no_open(file, res);
+ }
+
+- rc = check_name(direntry);
+- if (rc)
+- return rc;
+-
+ xid = get_xid();
+
+ cifs_dbg(FYI, "parent inode = 0x%p name is: %pd and dentry = 0x%p\n",
+@@ -505,6 +506,11 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
+ }
+
+ tcon = tlink_tcon(tlink);
++
++ rc = check_name(direntry, tcon);
++ if (rc)
++ goto out_free_xid;
++
+ server = tcon->ses->server;
+
+ if (server->ops->new_lease_key)
+@@ -765,7 +771,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
+ }
+ pTcon = tlink_tcon(tlink);
+
+- rc = check_name(direntry);
++ rc = check_name(direntry, pTcon);
+ if (rc)
+ goto lookup_out;
+
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index f8ae041d60fe..2f6f164c83ab 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -2554,8 +2554,8 @@ copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf,
+ kst->f_bsize = le32_to_cpu(pfs_inf->BytesPerSector) *
+ le32_to_cpu(pfs_inf->SectorsPerAllocationUnit);
+ kst->f_blocks = le64_to_cpu(pfs_inf->TotalAllocationUnits);
+- kst->f_bfree = le64_to_cpu(pfs_inf->ActualAvailableAllocationUnits);
+- kst->f_bavail = le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits);
++ kst->f_bfree = kst->f_bavail =
++ le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits);
+ return;
+ }
+
+diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
+index 70867d54fb8b..31acb20d0b6e 100644
+--- a/fs/cifs/smb2pdu.h
++++ b/fs/cifs/smb2pdu.h
+@@ -82,8 +82,8 @@
+
+ #define NUMBER_OF_SMB2_COMMANDS 0x0013
+
+-/* BB FIXME - analyze following length BB */
+-#define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (2*24 wct) + 2 bct + 2 pad */
++/* 4 len + 52 transform hdr + 64 hdr + 56 create rsp */
++#define MAX_SMB2_HDR_SIZE 0x00b0
+
+ #define SMB2_PROTO_NUMBER cpu_to_le32(0x424d53fe)
+
+diff --git a/fs/dlm/user.c b/fs/dlm/user.c
+index fb85f32e9eca..0221731a9462 100644
+--- a/fs/dlm/user.c
++++ b/fs/dlm/user.c
+@@ -355,6 +355,10 @@ static int dlm_device_register(struct dlm_ls *ls, char *name)
+ error = misc_register(&ls->ls_device);
+ if (error) {
+ kfree(ls->ls_device.name);
++ /* this has to be set to NULL
++ * to avoid a double-free in dlm_device_deregister
++ */
++ ls->ls_device.name = NULL;
+ }
+ fail:
+ return error;
+diff --git a/fs/eventpoll.c b/fs/eventpoll.c
+index 1e009cad8d5c..1b08556776ce 100644
+--- a/fs/eventpoll.c
++++ b/fs/eventpoll.c
+@@ -518,8 +518,13 @@ static void ep_remove_wait_queue(struct eppoll_entry *pwq)
+ wait_queue_head_t *whead;
+
+ rcu_read_lock();
+- /* If it is cleared by POLLFREE, it should be rcu-safe */
+- whead = rcu_dereference(pwq->whead);
++ /*
++ * If it is cleared by POLLFREE, it should be rcu-safe.
++ * If we read NULL we need a barrier paired with
++ * smp_store_release() in ep_poll_callback(), otherwise
++ * we rely on whead->lock.
++ */
++ whead = smp_load_acquire(&pwq->whead);
+ if (whead)
+ remove_wait_queue(whead, &pwq->wait);
+ rcu_read_unlock();
+@@ -1003,17 +1008,6 @@ static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *k
+ struct epitem *epi = ep_item_from_wait(wait);
+ struct eventpoll *ep = epi->ep;
+
+- if ((unsigned long)key & POLLFREE) {
+- ep_pwq_from_wait(wait)->whead = NULL;
+- /*
+- * whead = NULL above can race with ep_remove_wait_queue()
+- * which can do another remove_wait_queue() after us, so we
+- * can't use __remove_wait_queue(). whead->lock is held by
+- * the caller.
+- */
+- list_del_init(&wait->task_list);
+- }
+-
+ spin_lock_irqsave(&ep->lock, flags);
+
+ /*
+@@ -1078,6 +1072,23 @@ out_unlock:
+ if (pwake)
+ ep_poll_safewake(&ep->poll_wait);
+
++
++ if ((unsigned long)key & POLLFREE) {
++ /*
++ * If we race with ep_remove_wait_queue() it can miss
++ * ->whead = NULL and do another remove_wait_queue() after
++ * us, so we can't use __remove_wait_queue().
++ */
++ list_del_init(&wait->task_list);
++ /*
++ * ->whead != NULL protects us from the race with ep_free()
++ * or ep_remove(), ep_remove_wait_queue() takes whead->lock
++ * held by the caller. Once we nullify it, nothing protects
++ * ep/epi or even wait.
++ */
++ smp_store_release(&ep_pwq_from_wait(wait)->whead, NULL);
++ }
++
+ return 1;
+ }
+
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index 97aa8be40175..ccc43e2f07e2 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -2233,7 +2233,7 @@ static void ext4_orphan_cleanup(struct super_block *sb,
+ #ifdef CONFIG_QUOTA
+ /* Needed for iput() to work correctly and not trash data */
+ sb->s_flags |= MS_ACTIVE;
+- /* Turn on quotas so that they are updated correctly */
++ /* Turn on journaled quotas so that they are updated correctly */
+ for (i = 0; i < EXT4_MAXQUOTAS; i++) {
+ if (EXT4_SB(sb)->s_qf_names[i]) {
+ int ret = ext4_quota_on_mount(sb, i);
+@@ -2299,9 +2299,9 @@ static void ext4_orphan_cleanup(struct super_block *sb,
+ ext4_msg(sb, KERN_INFO, "%d truncate%s cleaned up",
+ PLURAL(nr_truncates));
+ #ifdef CONFIG_QUOTA
+- /* Turn quotas off */
++ /* Turn off journaled quotas if they were enabled for orphan cleanup */
+ for (i = 0; i < EXT4_MAXQUOTAS; i++) {
+- if (sb_dqopt(sb)->files[i])
++ if (EXT4_SB(sb)->s_qf_names[i] && sb_dqopt(sb)->files[i])
+ dquot_quota_off(sb, i);
+ }
+ #endif
+diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
+index 8d8ea99f2156..e195cc5e3590 100644
+--- a/fs/f2fs/recovery.c
++++ b/fs/f2fs/recovery.c
+@@ -265,7 +265,7 @@ static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi,
+ return 0;
+
+ /* Get the previous summary */
+- for (i = CURSEG_WARM_DATA; i <= CURSEG_COLD_DATA; i++) {
++ for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
+ struct curseg_info *curseg = CURSEG_I(sbi, i);
+ if (curseg->segno == segno) {
+ sum = curseg->sum_blk->entries[blkoff];
+diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
+index 16fcfdd6011c..280cd3d9151f 100644
+--- a/fs/nfsd/nfs4xdr.c
++++ b/fs/nfsd/nfs4xdr.c
+@@ -128,7 +128,7 @@ static void next_decode_page(struct nfsd4_compoundargs *argp)
+ argp->p = page_address(argp->pagelist[0]);
+ argp->pagelist++;
+ if (argp->pagelen < PAGE_SIZE) {
+- argp->end = argp->p + (argp->pagelen>>2);
++ argp->end = argp->p + XDR_QUADLEN(argp->pagelen);
+ argp->pagelen = 0;
+ } else {
+ argp->end = argp->p + (PAGE_SIZE>>2);
+@@ -1245,9 +1245,7 @@ nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
+ argp->pagelen -= pages * PAGE_SIZE;
+ len -= pages * PAGE_SIZE;
+
+- argp->p = (__be32 *)page_address(argp->pagelist[0]);
+- argp->pagelist++;
+- argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE);
++ next_decode_page(argp);
+ }
+ argp->p += XDR_QUADLEN(len);
+
+diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
+index 7c7842c85a08..530c2f9c47c7 100644
+--- a/fs/xfs/xfs_linux.h
++++ b/fs/xfs/xfs_linux.h
+@@ -376,7 +376,14 @@ static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y)
+ #endif /* DEBUG */
+
+ #ifdef CONFIG_XFS_RT
+-#define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME)
++
++/*
++ * make sure we ignore the inode flag if the filesystem doesn't have a
++ * configured realtime device.
++ */
++#define XFS_IS_REALTIME_INODE(ip) \
++ (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \
++ (ip)->i_mount->m_rtdev_targp)
+ #else
+ #define XFS_IS_REALTIME_INODE(ip) (0)
+ #endif
+diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
+index fc824e2828f3..5d2add1a6c96 100644
+--- a/include/asm-generic/topology.h
++++ b/include/asm-generic/topology.h
+@@ -48,7 +48,11 @@
+ #define parent_node(node) ((void)(node),0)
+ #endif
+ #ifndef cpumask_of_node
+-#define cpumask_of_node(node) ((void)node, cpu_online_mask)
++ #ifdef CONFIG_NEED_MULTIPLE_NODES
++ #define cpumask_of_node(node) ((node) == 0 ? cpu_online_mask : cpu_none_mask)
++ #else
++ #define cpumask_of_node(node) ((void)node, cpu_online_mask)
++ #endif
+ #endif
+ #ifndef pcibus_to_node
+ #define pcibus_to_node(bus) ((void)(bus), -1)
+diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
+index 9b6f5dc58732..d57b902407dd 100644
+--- a/include/linux/pci_ids.h
++++ b/include/linux/pci_ids.h
+@@ -573,6 +573,7 @@
+ #define PCI_DEVICE_ID_AMD_CS5536_EHC 0x2095
+ #define PCI_DEVICE_ID_AMD_CS5536_UDC 0x2096
+ #define PCI_DEVICE_ID_AMD_CS5536_UOC 0x2097
++#define PCI_DEVICE_ID_AMD_CS5536_DEV_IDE 0x2092
+ #define PCI_DEVICE_ID_AMD_CS5536_IDE 0x209A
+ #define PCI_DEVICE_ID_AMD_LX_VIDEO 0x2081
+ #define PCI_DEVICE_ID_AMD_LX_AES 0x2082
+diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
+index c28dd523f96e..d43837f2ce3a 100644
+--- a/include/linux/tty_flip.h
++++ b/include/linux/tty_flip.h
+@@ -12,6 +12,7 @@ extern int tty_prepare_flip_string(struct tty_port *port,
+ unsigned char **chars, size_t size);
+ extern void tty_flip_buffer_push(struct tty_port *port);
+ void tty_schedule_flip(struct tty_port *port);
++int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag);
+
+ static inline int tty_insert_flip_char(struct tty_port *port,
+ unsigned char ch, char flag)
+@@ -26,7 +27,7 @@ static inline int tty_insert_flip_char(struct tty_port *port,
+ *char_buf_ptr(tb, tb->used++) = ch;
+ return 1;
+ }
+- return tty_insert_flip_string_flags(port, &ch, &flag, 1);
++ return __tty_insert_flip_char(port, ch, flag);
+ }
+
+ static inline int tty_insert_flip_string(struct tty_port *port,
+diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
+index 530bdca19803..35fdedac3e25 100644
+--- a/include/net/sch_generic.h
++++ b/include/net/sch_generic.h
+@@ -701,8 +701,11 @@ static inline struct Qdisc *qdisc_replace(struct Qdisc *sch, struct Qdisc *new,
+ old = *pold;
+ *pold = new;
+ if (old != NULL) {
+- qdisc_tree_reduce_backlog(old, old->q.qlen, old->qstats.backlog);
++ unsigned int qlen = old->q.qlen;
++ unsigned int backlog = old->qstats.backlog;
++
+ qdisc_reset(old);
++ qdisc_tree_reduce_backlog(old, qlen, backlog);
+ }
+ sch_tree_unlock(sch);
+
+diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
+index 6e30024d9aac..d53c6e284e87 100644
+--- a/kernel/audit_watch.c
++++ b/kernel/audit_watch.c
+@@ -455,13 +455,15 @@ void audit_remove_watch_rule(struct audit_krule *krule)
+ list_del(&krule->rlist);
+
+ if (list_empty(&watch->rules)) {
++ /*
++ * audit_remove_watch() drops our reference to 'parent' which
++ * can get freed. Grab our own reference to be safe.
++ */
++ audit_get_parent(parent);
+ audit_remove_watch(watch);
+-
+- if (list_empty(&parent->watches)) {
+- audit_get_parent(parent);
++ if (list_empty(&parent->watches))
+ fsnotify_destroy_mark(&parent->mark, audit_watch_group);
+- audit_put_parent(parent);
+- }
++ audit_put_parent(parent);
+ }
+ }
+
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index e871080bc44e..e5553bdaf6c2 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -8102,28 +8102,27 @@ SYSCALL_DEFINE5(perf_event_open,
+ goto err_context;
+
+ /*
+- * Do not allow to attach to a group in a different
+- * task or CPU context:
++ * Make sure we're both events for the same CPU;
++ * grouping events for different CPUs is broken; since
++ * you can never concurrently schedule them anyhow.
+ */
+- if (move_group) {
+- /*
+- * Make sure we're both on the same task, or both
+- * per-cpu events.
+- */
+- if (group_leader->ctx->task != ctx->task)
+- goto err_context;
++ if (group_leader->cpu != event->cpu)
++ goto err_context;
+
+- /*
+- * Make sure we're both events for the same CPU;
+- * grouping events for different CPUs is broken; since
+- * you can never concurrently schedule them anyhow.
+- */
+- if (group_leader->cpu != event->cpu)
+- goto err_context;
+- } else {
+- if (group_leader->ctx != ctx)
+- goto err_context;
+- }
++ /*
++ * Make sure we're both on the same task, or both
++ * per-CPU events.
++ */
++ if (group_leader->ctx->task != ctx->task)
++ goto err_context;
++
++ /*
++ * Do not allow to attach to a group in a different task
++ * or CPU context. If we're moving SW events, we'll fix
++ * this up later, so allow that.
++ */
++ if (!move_group && group_leader->ctx != ctx)
++ goto err_context;
+
+ /*
+ * Only a group leader can be exclusive or pinned
+diff --git a/kernel/locking/locktorture.c b/kernel/locking/locktorture.c
+index ec8cce259779..a25e3a11f1b3 100644
+--- a/kernel/locking/locktorture.c
++++ b/kernel/locking/locktorture.c
+@@ -630,6 +630,8 @@ static void lock_torture_cleanup(void)
+ else
+ lock_torture_print_module_parms(cxt.cur_ops,
+ "End of test: SUCCESS");
++ kfree(cxt.lwsa);
++ kfree(cxt.lrsa);
+ torture_cleanup_end();
+ }
+
+@@ -763,6 +765,8 @@ static int __init lock_torture_init(void)
+ GFP_KERNEL);
+ if (reader_tasks == NULL) {
+ VERBOSE_TOROUT_ERRSTRING("reader_tasks: Out of memory");
++ kfree(writer_tasks);
++ writer_tasks = NULL;
+ firsterr = -ENOMEM;
+ goto unwind;
+ }
+diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
+index eb11011b5292..06d0e5712e86 100644
+--- a/kernel/trace/ftrace.c
++++ b/kernel/trace/ftrace.c
+@@ -2657,13 +2657,14 @@ static int ftrace_shutdown(struct ftrace_ops *ops, int command)
+
+ if (!command || !ftrace_enabled) {
+ /*
+- * If these are control ops, they still need their
+- * per_cpu field freed. Since, function tracing is
++ * If these are dynamic or control ops, they still
++ * need their data freed. Since, function tracing is
+ * not currently active, we can just free them
+ * without synchronizing all CPUs.
+ */
+- if (ops->flags & FTRACE_OPS_FL_CONTROL)
+- control_ops_free(ops);
++ if (ops->flags & (FTRACE_OPS_FL_DYNAMIC | FTRACE_OPS_FL_CONTROL))
++ goto free_ops;
++
+ return 0;
+ }
+
+@@ -2718,6 +2719,7 @@ static int ftrace_shutdown(struct ftrace_ops *ops, int command)
+ if (ops->flags & (FTRACE_OPS_FL_DYNAMIC | FTRACE_OPS_FL_CONTROL)) {
+ schedule_on_each_cpu(ftrace_sync);
+
++ free_ops:
+ arch_ftrace_trampoline_free(ops);
+
+ if (ops->flags & FTRACE_OPS_FL_CONTROL)
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index 591b3b4f5337..17213d74540b 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -5204,7 +5204,7 @@ static int tracing_set_clock(struct trace_array *tr, const char *clockstr)
+ tracing_reset_online_cpus(&tr->trace_buffer);
+
+ #ifdef CONFIG_TRACER_MAX_TRACE
+- if (tr->flags & TRACE_ARRAY_FL_GLOBAL && tr->max_buffer.buffer)
++ if (tr->max_buffer.buffer)
+ ring_buffer_set_clock(tr->max_buffer.buffer, trace_clocks[i].func);
+ tracing_reset_online_cpus(&tr->max_buffer);
+ #endif
+diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
+index 52adf02d7619..f186066f8b87 100644
+--- a/kernel/trace/trace_events_filter.c
++++ b/kernel/trace/trace_events_filter.c
+@@ -1928,6 +1928,10 @@ static int create_filter(struct ftrace_event_call *call,
+ if (err && set_str)
+ append_filter_err(ps, filter);
+ }
++ if (err && !set_str) {
++ free_event_filter(filter);
++ filter = NULL;
++ }
+ create_filter_finish(ps);
+
+ *filterp = filter;
+diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
+index b0f86ea77881..ca70d11b8aa7 100644
+--- a/kernel/trace/trace_selftest.c
++++ b/kernel/trace/trace_selftest.c
+@@ -272,7 +272,7 @@ static int trace_selftest_ops(struct trace_array *tr, int cnt)
+ goto out_free;
+ if (cnt > 1) {
+ if (trace_selftest_test_global_cnt == 0)
+- goto out;
++ goto out_free;
+ }
+ if (trace_selftest_test_dyn_cnt == 0)
+ goto out_free;
+diff --git a/mm/mempolicy.c b/mm/mempolicy.c
+index ea06282f8a3e..dacd2e9a5b68 100644
+--- a/mm/mempolicy.c
++++ b/mm/mempolicy.c
+@@ -897,11 +897,6 @@ static long do_get_mempolicy(int *policy, nodemask_t *nmask,
+ *policy |= (pol->flags & MPOL_MODE_FLAGS);
+ }
+
+- if (vma) {
+- up_read(¤t->mm->mmap_sem);
+- vma = NULL;
+- }
+-
+ err = 0;
+ if (nmask) {
+ if (mpol_store_user_nodemask(pol)) {
+diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
+index 1641367e54ca..69f56073b337 100644
+--- a/net/bluetooth/bnep/core.c
++++ b/net/bluetooth/bnep/core.c
+@@ -484,16 +484,16 @@ static int bnep_session(void *arg)
+ struct net_device *dev = s->dev;
+ struct sock *sk = s->sock->sk;
+ struct sk_buff *skb;
+- wait_queue_t wait;
++ DEFINE_WAIT_FUNC(wait, woken_wake_function);
+
+ BT_DBG("");
+
+ set_user_nice(current, -15);
+
+- init_waitqueue_entry(&wait, current);
+ add_wait_queue(sk_sleep(sk), &wait);
+ while (1) {
+- set_current_state(TASK_INTERRUPTIBLE);
++ /* Ensure session->terminate is updated */
++ smp_mb__before_atomic();
+
+ if (atomic_read(&s->terminate))
+ break;
+@@ -515,9 +515,8 @@ static int bnep_session(void *arg)
+ break;
+ netif_wake_queue(dev);
+
+- schedule();
++ wait_woken(&wait, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT);
+ }
+- __set_current_state(TASK_RUNNING);
+ remove_wait_queue(sk_sleep(sk), &wait);
+
+ /* Cleanup session */
+@@ -663,7 +662,7 @@ int bnep_del_connection(struct bnep_conndel_req *req)
+ s = __bnep_get_session(req->dst);
+ if (s) {
+ atomic_inc(&s->terminate);
+- wake_up_process(s->task);
++ wake_up_interruptible(sk_sleep(s->sock->sk));
+ } else
+ err = -ENOENT;
+
+diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
+index 298ed37010e6..3a39fd523e40 100644
+--- a/net/bluetooth/cmtp/core.c
++++ b/net/bluetooth/cmtp/core.c
+@@ -281,16 +281,16 @@ static int cmtp_session(void *arg)
+ struct cmtp_session *session = arg;
+ struct sock *sk = session->sock->sk;
+ struct sk_buff *skb;
+- wait_queue_t wait;
++ DEFINE_WAIT_FUNC(wait, woken_wake_function);
+
+ BT_DBG("session %p", session);
+
+ set_user_nice(current, -15);
+
+- init_waitqueue_entry(&wait, current);
+ add_wait_queue(sk_sleep(sk), &wait);
+ while (1) {
+- set_current_state(TASK_INTERRUPTIBLE);
++ /* Ensure session->terminate is updated */
++ smp_mb__before_atomic();
+
+ if (atomic_read(&session->terminate))
+ break;
+@@ -307,9 +307,8 @@ static int cmtp_session(void *arg)
+
+ cmtp_process_transmit(session);
+
+- schedule();
++ wait_woken(&wait, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT);
+ }
+- __set_current_state(TASK_RUNNING);
+ remove_wait_queue(sk_sleep(sk), &wait);
+
+ down_write(&cmtp_session_sem);
+@@ -394,7 +393,7 @@ int cmtp_add_connection(struct cmtp_connadd_req *req, struct socket *sock)
+ err = cmtp_attach_device(session);
+ if (err < 0) {
+ atomic_inc(&session->terminate);
+- wake_up_process(session->task);
++ wake_up_interruptible(sk_sleep(session->sock->sk));
+ up_write(&cmtp_session_sem);
+ return err;
+ }
+@@ -432,7 +431,11 @@ int cmtp_del_connection(struct cmtp_conndel_req *req)
+
+ /* Stop session thread */
+ atomic_inc(&session->terminate);
+- wake_up_process(session->task);
++
++ /* Ensure session->terminate is updated */
++ smp_mb__after_atomic();
++
++ wake_up_interruptible(sk_sleep(session->sock->sk));
+ } else
+ err = -ENOENT;
+
+diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
+index 4a0015e16d4f..b9eb90109f7c 100644
+--- a/net/bluetooth/hidp/core.c
++++ b/net/bluetooth/hidp/core.c
+@@ -36,6 +36,7 @@
+ #define VERSION "1.2"
+
+ static DECLARE_RWSEM(hidp_session_sem);
++static DECLARE_WAIT_QUEUE_HEAD(hidp_session_wq);
+ static LIST_HEAD(hidp_session_list);
+
+ static unsigned char hidp_keycode[256] = {
+@@ -1067,12 +1068,12 @@ static int hidp_session_start_sync(struct hidp_session *session)
+ * Wake up session thread and notify it to stop. This is asynchronous and
+ * returns immediately. Call this whenever a runtime error occurs and you want
+ * the session to stop.
+- * Note: wake_up_process() performs any necessary memory-barriers for us.
++ * Note: wake_up_interruptible() performs any necessary memory-barriers for us.
+ */
+ static void hidp_session_terminate(struct hidp_session *session)
+ {
+ atomic_inc(&session->terminate);
+- wake_up_process(session->task);
++ wake_up_interruptible(&hidp_session_wq);
+ }
+
+ /*
+@@ -1179,7 +1180,9 @@ static void hidp_session_run(struct hidp_session *session)
+ struct sock *ctrl_sk = session->ctrl_sock->sk;
+ struct sock *intr_sk = session->intr_sock->sk;
+ struct sk_buff *skb;
++ DEFINE_WAIT_FUNC(wait, woken_wake_function);
+
++ add_wait_queue(&hidp_session_wq, &wait);
+ for (;;) {
+ /*
+ * This thread can be woken up two ways:
+@@ -1187,12 +1190,10 @@ static void hidp_session_run(struct hidp_session *session)
+ * session->terminate flag and wakes this thread up.
+ * - Via modifying the socket state of ctrl/intr_sock. This
+ * thread is woken up by ->sk_state_changed().
+- *
+- * Note: set_current_state() performs any necessary
+- * memory-barriers for us.
+ */
+- set_current_state(TASK_INTERRUPTIBLE);
+
++ /* Ensure session->terminate is updated */
++ smp_mb__before_atomic();
+ if (atomic_read(&session->terminate))
+ break;
+
+@@ -1226,11 +1227,22 @@ static void hidp_session_run(struct hidp_session *session)
+ hidp_process_transmit(session, &session->ctrl_transmit,
+ session->ctrl_sock);
+
+- schedule();
++ wait_woken(&wait, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT);
+ }
++ remove_wait_queue(&hidp_session_wq, &wait);
+
+ atomic_inc(&session->terminate);
+- set_current_state(TASK_RUNNING);
++
++ /* Ensure session->terminate is updated */
++ smp_mb__after_atomic();
++}
++
++static int hidp_session_wake_function(wait_queue_t *wait,
++ unsigned int mode,
++ int sync, void *key)
++{
++ wake_up_interruptible(&hidp_session_wq);
++ return false;
+ }
+
+ /*
+@@ -1243,7 +1255,8 @@ static void hidp_session_run(struct hidp_session *session)
+ static int hidp_session_thread(void *arg)
+ {
+ struct hidp_session *session = arg;
+- wait_queue_t ctrl_wait, intr_wait;
++ DEFINE_WAIT_FUNC(ctrl_wait, hidp_session_wake_function);
++ DEFINE_WAIT_FUNC(intr_wait, hidp_session_wake_function);
+
+ BT_DBG("session %p", session);
+
+@@ -1253,8 +1266,6 @@ static int hidp_session_thread(void *arg)
+ set_user_nice(current, -15);
+ hidp_set_timer(session);
+
+- init_waitqueue_entry(&ctrl_wait, current);
+- init_waitqueue_entry(&intr_wait, current);
+ add_wait_queue(sk_sleep(session->ctrl_sock->sk), &ctrl_wait);
+ add_wait_queue(sk_sleep(session->intr_sock->sk), &intr_wait);
+ /* This memory barrier is paired with wq_has_sleeper(). See
+diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
+index dad419782a12..9b6b35977f48 100644
+--- a/net/bluetooth/l2cap_core.c
++++ b/net/bluetooth/l2cap_core.c
+@@ -57,7 +57,7 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
+ u8 code, u8 ident, u16 dlen, void *data);
+ static void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len,
+ void *data);
+-static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data);
++static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data, size_t data_size);
+ static void l2cap_send_disconn_req(struct l2cap_chan *chan, int err);
+
+ static void l2cap_tx(struct l2cap_chan *chan, struct l2cap_ctrl *control,
+@@ -1462,7 +1462,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
+
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+
+@@ -2970,12 +2970,15 @@ static inline int l2cap_get_conf_opt(void **ptr, int *type, int *olen,
+ return len;
+ }
+
+-static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
++static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val, size_t size)
+ {
+ struct l2cap_conf_opt *opt = *ptr;
+
+ BT_DBG("type 0x%2.2x len %u val 0x%lx", type, len, val);
+
++ if (size < L2CAP_CONF_OPT_SIZE + len)
++ return;
++
+ opt->type = type;
+ opt->len = len;
+
+@@ -3000,7 +3003,7 @@ static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
+ *ptr += L2CAP_CONF_OPT_SIZE + len;
+ }
+
+-static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan)
++static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan, size_t size)
+ {
+ struct l2cap_conf_efs efs;
+
+@@ -3028,7 +3031,7 @@ static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan)
+ }
+
+ l2cap_add_conf_opt(ptr, L2CAP_CONF_EFS, sizeof(efs),
+- (unsigned long) &efs);
++ (unsigned long) &efs, size);
+ }
+
+ static void l2cap_ack_timeout(struct work_struct *work)
+@@ -3174,11 +3177,12 @@ static inline void l2cap_txwin_setup(struct l2cap_chan *chan)
+ chan->ack_win = chan->tx_win;
+ }
+
+-static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
++static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data, size_t data_size)
+ {
+ struct l2cap_conf_req *req = data;
+ struct l2cap_conf_rfc rfc = { .mode = chan->mode };
+ void *ptr = req->data;
++ void *endptr = data + data_size;
+ u16 size;
+
+ BT_DBG("chan %p", chan);
+@@ -3203,7 +3207,7 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
+
+ done:
+ if (chan->imtu != L2CAP_DEFAULT_MTU)
+- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
++ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu, endptr - ptr);
+
+ switch (chan->mode) {
+ case L2CAP_MODE_BASIC:
+@@ -3222,7 +3226,7 @@ done:
+ rfc.max_pdu_size = 0;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+ break;
+
+ case L2CAP_MODE_ERTM:
+@@ -3242,21 +3246,21 @@ done:
+ L2CAP_DEFAULT_TX_WINDOW);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags))
+- l2cap_add_opt_efs(&ptr, chan);
++ l2cap_add_opt_efs(&ptr, chan, endptr - ptr);
+
+ if (test_bit(FLAG_EXT_CTRL, &chan->flags))
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS, 2,
+- chan->tx_win);
++ chan->tx_win, endptr - ptr);
+
+ if (chan->conn->feat_mask & L2CAP_FEAT_FCS)
+ if (chan->fcs == L2CAP_FCS_NONE ||
+ test_bit(CONF_RECV_NO_FCS, &chan->conf_state)) {
+ chan->fcs = L2CAP_FCS_NONE;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1,
+- chan->fcs);
++ chan->fcs, endptr - ptr);
+ }
+ break;
+
+@@ -3274,17 +3278,17 @@ done:
+ rfc.max_pdu_size = cpu_to_le16(size);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags))
+- l2cap_add_opt_efs(&ptr, chan);
++ l2cap_add_opt_efs(&ptr, chan, endptr - ptr);
+
+ if (chan->conn->feat_mask & L2CAP_FEAT_FCS)
+ if (chan->fcs == L2CAP_FCS_NONE ||
+ test_bit(CONF_RECV_NO_FCS, &chan->conf_state)) {
+ chan->fcs = L2CAP_FCS_NONE;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1,
+- chan->fcs);
++ chan->fcs, endptr - ptr);
+ }
+ break;
+ }
+@@ -3295,10 +3299,11 @@ done:
+ return ptr - data;
+ }
+
+-static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data)
++static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data, size_t data_size)
+ {
+ struct l2cap_conf_rsp *rsp = data;
+ void *ptr = rsp->data;
++ void *endptr = data + data_size;
+ void *req = chan->conf_req;
+ int len = chan->conf_len;
+ int type, hint, olen;
+@@ -3400,7 +3405,7 @@ done:
+ return -ECONNREFUSED;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+ }
+
+ if (result == L2CAP_CONF_SUCCESS) {
+@@ -3413,7 +3418,7 @@ done:
+ chan->omtu = mtu;
+ set_bit(CONF_MTU_DONE, &chan->conf_state);
+ }
+- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu);
++ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu, endptr - ptr);
+
+ if (remote_efs) {
+ if (chan->local_stype != L2CAP_SERV_NOTRAFIC &&
+@@ -3427,7 +3432,7 @@ done:
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
+ sizeof(efs),
+- (unsigned long) &efs);
++ (unsigned long) &efs, endptr - ptr);
+ } else {
+ /* Send PENDING Conf Rsp */
+ result = L2CAP_CONF_PENDING;
+@@ -3460,7 +3465,7 @@ done:
+ set_bit(CONF_MODE_DONE, &chan->conf_state);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+- sizeof(rfc), (unsigned long) &rfc);
++ sizeof(rfc), (unsigned long) &rfc, endptr - ptr);
+
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags)) {
+ chan->remote_id = efs.id;
+@@ -3474,7 +3479,7 @@ done:
+ le32_to_cpu(efs.sdu_itime);
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
+ sizeof(efs),
+- (unsigned long) &efs);
++ (unsigned long) &efs, endptr - ptr);
+ }
+ break;
+
+@@ -3488,7 +3493,7 @@ done:
+ set_bit(CONF_MODE_DONE, &chan->conf_state);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+
+ break;
+
+@@ -3510,10 +3515,11 @@ done:
+ }
+
+ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+- void *data, u16 *result)
++ void *data, size_t size, u16 *result)
+ {
+ struct l2cap_conf_req *req = data;
+ void *ptr = req->data;
++ void *endptr = data + size;
+ int type, olen;
+ unsigned long val;
+ struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
+@@ -3531,13 +3537,13 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+ chan->imtu = L2CAP_DEFAULT_MIN_MTU;
+ } else
+ chan->imtu = val;
+- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
++ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_FLUSH_TO:
+ chan->flush_to = val;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO,
+- 2, chan->flush_to);
++ 2, chan->flush_to, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_RFC:
+@@ -3551,13 +3557,13 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+ chan->fcs = 0;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+- sizeof(rfc), (unsigned long) &rfc);
++ sizeof(rfc), (unsigned long) &rfc, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_EWS:
+ chan->ack_win = min_t(u16, val, chan->ack_win);
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS, 2,
+- chan->tx_win);
++ chan->tx_win, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_EFS:
+@@ -3570,7 +3576,7 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+ return -ECONNREFUSED;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs),
+- (unsigned long) &efs);
++ (unsigned long) &efs, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_FCS:
+@@ -3675,7 +3681,7 @@ void __l2cap_connect_rsp_defer(struct l2cap_chan *chan)
+ return;
+
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+
+@@ -3883,7 +3889,7 @@ sendresp:
+ u8 buf[128];
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+
+@@ -3961,7 +3967,7 @@ static int l2cap_connect_create_rsp(struct l2cap_conn *conn,
+ break;
+
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, req), req);
++ l2cap_build_conf_req(chan, req, sizeof(req)), req);
+ chan->num_conf_req++;
+ break;
+
+@@ -4073,7 +4079,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
+ }
+
+ /* Complete config. */
+- len = l2cap_parse_conf_req(chan, rsp);
++ len = l2cap_parse_conf_req(chan, rsp, sizeof(rsp));
+ if (len < 0) {
+ l2cap_send_disconn_req(chan, ECONNRESET);
+ goto unlock;
+@@ -4107,7 +4113,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
+ if (!test_and_set_bit(CONF_REQ_SENT, &chan->conf_state)) {
+ u8 buf[64];
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+
+@@ -4167,7 +4173,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn,
+ char buf[64];
+
+ len = l2cap_parse_conf_rsp(chan, rsp->data, len,
+- buf, &result);
++ buf, sizeof(buf), &result);
+ if (len < 0) {
+ l2cap_send_disconn_req(chan, ECONNRESET);
+ goto done;
+@@ -4197,7 +4203,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn,
+ /* throw out any old stored conf requests */
+ result = L2CAP_CONF_SUCCESS;
+ len = l2cap_parse_conf_rsp(chan, rsp->data, len,
+- req, &result);
++ req, sizeof(req), &result);
+ if (len < 0) {
+ l2cap_send_disconn_req(chan, ECONNRESET);
+ goto done;
+@@ -4774,7 +4780,7 @@ static void l2cap_do_create(struct l2cap_chan *chan, int result,
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(chan->conn, l2cap_get_ident(chan->conn),
+ L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+ }
+@@ -7430,7 +7436,7 @@ static void l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn),
+ L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf),
++ l2cap_build_conf_req(chan, buf, sizeof(buf)),
+ buf);
+ chan->num_conf_req++;
+ }
+diff --git a/net/dccp/proto.c b/net/dccp/proto.c
+index 52a94016526d..522658179cca 100644
+--- a/net/dccp/proto.c
++++ b/net/dccp/proto.c
+@@ -24,6 +24,7 @@
+ #include <net/checksum.h>
+
+ #include <net/inet_sock.h>
++#include <net/inet_common.h>
+ #include <net/sock.h>
+ #include <net/xfrm.h>
+
+@@ -170,6 +171,15 @@ const char *dccp_packet_name(const int type)
+
+ EXPORT_SYMBOL_GPL(dccp_packet_name);
+
++static void dccp_sk_destruct(struct sock *sk)
++{
++ struct dccp_sock *dp = dccp_sk(sk);
++
++ ccid_hc_tx_delete(dp->dccps_hc_tx_ccid, sk);
++ dp->dccps_hc_tx_ccid = NULL;
++ inet_sock_destruct(sk);
++}
++
+ int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized)
+ {
+ struct dccp_sock *dp = dccp_sk(sk);
+@@ -179,6 +189,7 @@ int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized)
+ icsk->icsk_syn_retries = sysctl_dccp_request_retries;
+ sk->sk_state = DCCP_CLOSED;
+ sk->sk_write_space = dccp_write_space;
++ sk->sk_destruct = dccp_sk_destruct;
+ icsk->icsk_sync_mss = dccp_sync_mss;
+ dp->dccps_mss_cache = 536;
+ dp->dccps_rate_last = jiffies;
+@@ -201,10 +212,7 @@ void dccp_destroy_sock(struct sock *sk)
+ {
+ struct dccp_sock *dp = dccp_sk(sk);
+
+- /*
+- * DCCP doesn't use sk_write_queue, just sk_send_head
+- * for retransmissions
+- */
++ __skb_queue_purge(&sk->sk_write_queue);
+ if (sk->sk_send_head != NULL) {
+ kfree_skb(sk->sk_send_head);
+ sk->sk_send_head = NULL;
+@@ -222,8 +230,7 @@ void dccp_destroy_sock(struct sock *sk)
+ dp->dccps_hc_rx_ackvec = NULL;
+ }
+ ccid_hc_rx_delete(dp->dccps_hc_rx_ccid, sk);
+- ccid_hc_tx_delete(dp->dccps_hc_tx_ccid, sk);
+- dp->dccps_hc_rx_ccid = dp->dccps_hc_tx_ccid = NULL;
++ dp->dccps_hc_rx_ccid = NULL;
+
+ /* clean up feature negotiation state */
+ dccp_feat_list_purge(&dp->dccps_featneg);
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index d935c9815564..1ba4d0964042 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -2220,6 +2220,10 @@ int tcp_disconnect(struct sock *sk, int flags)
+ tcp_set_ca_state(sk, TCP_CA_Open);
+ tcp_clear_retrans(tp);
+ inet_csk_delack_init(sk);
++ /* Initialize rcv_mss to TCP_MIN_MSS to avoid division by 0
++ * issue in __tcp_select_window()
++ */
++ icsk->icsk_ack.rcv_mss = TCP_MIN_MSS;
+ tcp_init_send_head(sk);
+ memset(&tp->rx_opt, 0, sizeof(tp->rx_opt));
+ __sk_dst_reset(sk);
+diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
+index 767ee7471c9b..95f98d2444fa 100644
+--- a/net/ipv4/tcp_input.c
++++ b/net/ipv4/tcp_input.c
+@@ -2989,8 +2989,7 @@ void tcp_rearm_rto(struct sock *sk)
+ /* delta may not be positive if the socket is locked
+ * when the retrans timer fires and is rescheduled.
+ */
+- if (delta > 0)
+- rto = delta;
++ rto = max(delta, 1);
+ }
+ inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS, rto,
+ TCP_RTO_MAX);
+diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
+index bde57b113009..e7a60f5de097 100644
+--- a/net/ipv6/ip6_fib.c
++++ b/net/ipv6/ip6_fib.c
+@@ -160,6 +160,12 @@ static void rt6_release(struct rt6_info *rt)
+ dst_free(&rt->dst);
+ }
+
++static void fib6_free_table(struct fib6_table *table)
++{
++ inetpeer_invalidate_tree(&table->tb6_peers);
++ kfree(table);
++}
++
+ static void fib6_link_table(struct net *net, struct fib6_table *tb)
+ {
+ unsigned int h;
+@@ -853,6 +859,8 @@ add:
+ }
+ nsiblings = iter->rt6i_nsiblings;
+ fib6_purge_rt(iter, fn, info->nl_net);
++ if (fn->rr_ptr == iter)
++ fn->rr_ptr = NULL;
+ rt6_release(iter);
+
+ if (nsiblings) {
+@@ -863,6 +871,8 @@ add:
+ if (rt6_qualify_for_ecmp(iter)) {
+ *ins = iter->dst.rt6_next;
+ fib6_purge_rt(iter, fn, info->nl_net);
++ if (fn->rr_ptr == iter)
++ fn->rr_ptr = NULL;
+ rt6_release(iter);
+ nsiblings--;
+ } else {
+@@ -1818,15 +1828,22 @@ out_timer:
+
+ static void fib6_net_exit(struct net *net)
+ {
++ unsigned int i;
++
+ rt6_ifdown(net, NULL);
+ del_timer_sync(&net->ipv6.ip6_fib_timer);
+
+-#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+- inetpeer_invalidate_tree(&net->ipv6.fib6_local_tbl->tb6_peers);
+- kfree(net->ipv6.fib6_local_tbl);
+-#endif
+- inetpeer_invalidate_tree(&net->ipv6.fib6_main_tbl->tb6_peers);
+- kfree(net->ipv6.fib6_main_tbl);
++ for (i = 0; i < FIB6_TABLE_HASHSZ; i++) {
++ struct hlist_head *head = &net->ipv6.fib_table_hash[i];
++ struct hlist_node *tmp;
++ struct fib6_table *tb;
++
++ hlist_for_each_entry_safe(tb, tmp, head, tb6_hlist) {
++ hlist_del(&tb->tb6_hlist);
++ fib6_free_table(tb);
++ }
++ }
++
+ kfree(net->ipv6.fib_table_hash);
+ kfree(net->ipv6.rt6_stats);
+ }
+diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
+index 606a07890c68..1cb68e01c301 100644
+--- a/net/ipv6/ip6_offload.c
++++ b/net/ipv6/ip6_offload.c
+@@ -261,19 +261,6 @@ out:
+ return pp;
+ }
+
+-static struct sk_buff **sit_gro_receive(struct sk_buff **head,
+- struct sk_buff *skb)
+-{
+- if (NAPI_GRO_CB(skb)->encap_mark) {
+- NAPI_GRO_CB(skb)->flush = 1;
+- return NULL;
+- }
+-
+- NAPI_GRO_CB(skb)->encap_mark = 1;
+-
+- return ipv6_gro_receive(head, skb);
+-}
+-
+ static int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
+ {
+ const struct net_offload *ops;
+diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
+index 292ef2e584db..7c6159b1481a 100644
+--- a/net/ipv6/output_core.c
++++ b/net/ipv6/output_core.c
+@@ -84,7 +84,6 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
+
+ while (offset <= packet_len) {
+ struct ipv6_opt_hdr *exthdr;
+- unsigned int len;
+
+ switch (**nexthdr) {
+
+@@ -110,10 +109,9 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
+
+ exthdr = (struct ipv6_opt_hdr *)(skb_network_header(skb) +
+ offset);
+- len = ipv6_optlen(exthdr);
+- if (len + offset >= IPV6_MAXPLEN)
++ offset += ipv6_optlen(exthdr);
++ if (offset > IPV6_MAXPLEN)
+ return -EINVAL;
+- offset += len;
+ *nexthdr = &exthdr->nexthdr;
+ }
+
+diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
+index eca46d3d3ff3..d7637c9218bd 100644
+--- a/net/irda/af_irda.c
++++ b/net/irda/af_irda.c
+@@ -2228,7 +2228,7 @@ static int irda_getsockopt(struct socket *sock, int level, int optname,
+ {
+ struct sock *sk = sock->sk;
+ struct irda_sock *self = irda_sk(sk);
+- struct irda_device_list list;
++ struct irda_device_list list = { 0 };
+ struct irda_device_info *discoveries;
+ struct irda_ias_set * ias_opt; /* IAS get/query params */
+ struct ias_object * ias_obj; /* Object in IAS */
+diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c
+index 1a9545965c0d..531ca55f1af6 100644
+--- a/net/netfilter/nf_conntrack_extend.c
++++ b/net/netfilter/nf_conntrack_extend.c
+@@ -53,7 +53,11 @@ nf_ct_ext_create(struct nf_ct_ext **ext, enum nf_ct_ext_id id,
+
+ rcu_read_lock();
+ t = rcu_dereference(nf_ct_ext_types[id]);
+- BUG_ON(t == NULL);
++ if (!t) {
++ rcu_read_unlock();
++ return NULL;
++ }
++
+ off = ALIGN(sizeof(struct nf_ct_ext), t->align);
+ len = off + t->len + var_alloc_len;
+ alloc_size = t->alloc_size + var_alloc_len;
+@@ -88,7 +92,10 @@ void *__nf_ct_ext_add_length(struct nf_conn *ct, enum nf_ct_ext_id id,
+
+ rcu_read_lock();
+ t = rcu_dereference(nf_ct_ext_types[id]);
+- BUG_ON(t == NULL);
++ if (!t) {
++ rcu_read_unlock();
++ return NULL;
++ }
+
+ newoff = ALIGN(old->len, t->align);
+ newlen = newoff + t->len + var_alloc_len;
+@@ -186,6 +193,6 @@ void nf_ct_extend_unregister(struct nf_ct_ext_type *type)
+ RCU_INIT_POINTER(nf_ct_ext_types[type->id], NULL);
+ update_alloc_size(type);
+ mutex_unlock(&nf_ct_ext_type_mutex);
+- rcu_barrier(); /* Wait for completion of call_rcu()'s */
++ synchronize_rcu();
+ }
+ EXPORT_SYMBOL_GPL(nf_ct_extend_unregister);
+diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
+index fdcced6aa71d..78d0eaf5de61 100644
+--- a/net/sched/sch_sfq.c
++++ b/net/sched/sch_sfq.c
+@@ -457,6 +457,7 @@ congestion_drop:
+ qdisc_drop(head, sch);
+
+ slot_queue_add(slot, skb);
++ qdisc_tree_reduce_backlog(sch, 0, delta);
+ return NET_XMIT_CN;
+ }
+
+@@ -488,8 +489,10 @@ enqueue:
+ /* Return Congestion Notification only if we dropped a packet
+ * from this flow.
+ */
+- if (qlen != slot->qlen)
++ if (qlen != slot->qlen) {
++ qdisc_tree_reduce_backlog(sch, 0, dropped - qdisc_pkt_len(skb));
+ return NET_XMIT_CN;
++ }
+
+ /* As we dropped a packet, better let upper stack know this */
+ qdisc_tree_reduce_backlog(sch, 1, dropped);
+diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
+index 29fa707d61fd..2bb7240c6f8b 100644
+--- a/net/sctp/ipv6.c
++++ b/net/sctp/ipv6.c
+@@ -491,7 +491,9 @@ static void sctp_v6_to_addr(union sctp_addr *addr, struct in6_addr *saddr,
+ {
+ addr->sa.sa_family = AF_INET6;
+ addr->v6.sin6_port = port;
++ addr->v6.sin6_flowinfo = 0;
+ addr->v6.sin6_addr = *saddr;
++ addr->v6.sin6_scope_id = 0;
+ }
+
+ /* Compare addresses exactly.
+diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
+index e5ec86dd8dc1..a8dd585fcc38 100644
+--- a/net/tipc/netlink_compat.c
++++ b/net/tipc/netlink_compat.c
+@@ -256,13 +256,15 @@ static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
+ arg = nlmsg_new(0, GFP_KERNEL);
+ if (!arg) {
+ kfree_skb(msg->rep);
++ msg->rep = NULL;
+ return -ENOMEM;
+ }
+
+ err = __tipc_nl_compat_dumpit(cmd, msg, arg);
+- if (err)
++ if (err) {
+ kfree_skb(msg->rep);
+-
++ msg->rep = NULL;
++ }
+ kfree_skb(arg);
+
+ return err;
+diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
+index 155070f500aa..04a025218d13 100644
+--- a/net/xfrm/xfrm_policy.c
++++ b/net/xfrm/xfrm_policy.c
+@@ -3255,9 +3255,15 @@ int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
+ struct xfrm_state *x_new[XFRM_MAX_DEPTH];
+ struct xfrm_migrate *mp;
+
++ /* Stage 0 - sanity checks */
+ if ((err = xfrm_migrate_check(m, num_migrate)) < 0)
+ goto out;
+
++ if (dir >= XFRM_POLICY_MAX) {
++ err = -EINVAL;
++ goto out;
++ }
++
+ /* Stage 1 - find policy */
+ if ((pol = xfrm_migrate_policy_find(sel, dir, type, net)) == NULL) {
+ err = -ENOENT;
+diff --git a/sound/core/control.c b/sound/core/control.c
+index b4fe9b002512..bd01d492f46a 100644
+--- a/sound/core/control.c
++++ b/sound/core/control.c
+@@ -1126,7 +1126,7 @@ static int snd_ctl_elem_user_tlv(struct snd_kcontrol *kcontrol,
+ mutex_lock(&ue->card->user_ctl_lock);
+ change = ue->tlv_data_size != size;
+ if (!change)
+- change = memcmp(ue->tlv_data, new_data, size);
++ change = memcmp(ue->tlv_data, new_data, size) != 0;
+ kfree(ue->tlv_data);
+ ue->tlv_data = new_data;
+ ue->tlv_data_size = size;
+diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
+index 8158ba354b48..b6f5f47048ba 100644
+--- a/sound/core/seq/seq_clientmgr.c
++++ b/sound/core/seq/seq_clientmgr.c
+@@ -1530,19 +1530,14 @@ static int snd_seq_ioctl_create_queue(struct snd_seq_client *client,
+ void __user *arg)
+ {
+ struct snd_seq_queue_info info;
+- int result;
+ struct snd_seq_queue *q;
+
+ if (copy_from_user(&info, arg, sizeof(info)))
+ return -EFAULT;
+
+- result = snd_seq_queue_alloc(client->number, info.locked, info.flags);
+- if (result < 0)
+- return result;
+-
+- q = queueptr(result);
+- if (q == NULL)
+- return -EINVAL;
++ q = snd_seq_queue_alloc(client->number, info.locked, info.flags);
++ if (IS_ERR(q))
++ return PTR_ERR(q);
+
+ info.queue = q->queue;
+ info.locked = q->locked;
+@@ -1552,7 +1547,7 @@ static int snd_seq_ioctl_create_queue(struct snd_seq_client *client,
+ if (! info.name[0])
+ snprintf(info.name, sizeof(info.name), "Queue-%d", q->queue);
+ strlcpy(q->name, info.name, sizeof(q->name));
+- queuefree(q);
++ snd_use_lock_free(&q->use_lock);
+
+ if (copy_to_user(arg, &info, sizeof(info)))
+ return -EFAULT;
+diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c
+index f676ae53c477..a7bd074f6c0e 100644
+--- a/sound/core/seq/seq_queue.c
++++ b/sound/core/seq/seq_queue.c
+@@ -184,22 +184,26 @@ void __exit snd_seq_queues_delete(void)
+ static void queue_use(struct snd_seq_queue *queue, int client, int use);
+
+ /* allocate a new queue -
+- * return queue index value or negative value for error
++ * return pointer to new queue or ERR_PTR(-errno) for error
++ * The new queue's use_lock is set to 1. It is the caller's responsibility to
++ * call snd_use_lock_free(&q->use_lock).
+ */
+-int snd_seq_queue_alloc(int client, int locked, unsigned int info_flags)
++struct snd_seq_queue *snd_seq_queue_alloc(int client, int locked, unsigned int info_flags)
+ {
+ struct snd_seq_queue *q;
+
+ q = queue_new(client, locked);
+ if (q == NULL)
+- return -ENOMEM;
++ return ERR_PTR(-ENOMEM);
+ q->info_flags = info_flags;
+ queue_use(q, client, 1);
++ snd_use_lock_use(&q->use_lock);
+ if (queue_list_add(q) < 0) {
++ snd_use_lock_free(&q->use_lock);
+ queue_delete(q);
+- return -ENOMEM;
++ return ERR_PTR(-ENOMEM);
+ }
+- return q->queue;
++ return q;
+ }
+
+ /* delete a queue - queue must be owned by the client */
+diff --git a/sound/core/seq/seq_queue.h b/sound/core/seq/seq_queue.h
+index 30c8111477f6..719093489a2c 100644
+--- a/sound/core/seq/seq_queue.h
++++ b/sound/core/seq/seq_queue.h
+@@ -71,7 +71,7 @@ void snd_seq_queues_delete(void);
+
+
+ /* create new queue (constructor) */
+-int snd_seq_queue_alloc(int client, int locked, unsigned int flags);
++struct snd_seq_queue *snd_seq_queue_alloc(int client, int locked, unsigned int flags);
+
+ /* delete queue (destructor) */
+ int snd_seq_queue_delete(int client, int queueid);
+diff --git a/sound/isa/msnd/msnd_midi.c b/sound/isa/msnd/msnd_midi.c
+index ffc67fd80c23..58e59cd3c95c 100644
+--- a/sound/isa/msnd/msnd_midi.c
++++ b/sound/isa/msnd/msnd_midi.c
+@@ -120,24 +120,24 @@ void snd_msndmidi_input_read(void *mpuv)
+ unsigned long flags;
+ struct snd_msndmidi *mpu = mpuv;
+ void *pwMIDQData = mpu->dev->mappedbase + MIDQ_DATA_BUFF;
++ u16 head, tail, size;
+
+ spin_lock_irqsave(&mpu->input_lock, flags);
+- while (readw(mpu->dev->MIDQ + JQS_wTail) !=
+- readw(mpu->dev->MIDQ + JQS_wHead)) {
+- u16 wTmp, val;
+- val = readw(pwMIDQData + 2 * readw(mpu->dev->MIDQ + JQS_wHead));
+-
+- if (test_bit(MSNDMIDI_MODE_BIT_INPUT_TRIGGER,
+- &mpu->mode))
+- snd_rawmidi_receive(mpu->substream_input,
+- (unsigned char *)&val, 1);
+-
+- wTmp = readw(mpu->dev->MIDQ + JQS_wHead) + 1;
+- if (wTmp > readw(mpu->dev->MIDQ + JQS_wSize))
+- writew(0, mpu->dev->MIDQ + JQS_wHead);
+- else
+- writew(wTmp, mpu->dev->MIDQ + JQS_wHead);
++ head = readw(mpu->dev->MIDQ + JQS_wHead);
++ tail = readw(mpu->dev->MIDQ + JQS_wTail);
++ size = readw(mpu->dev->MIDQ + JQS_wSize);
++ if (head > size || tail > size)
++ goto out;
++ while (head != tail) {
++ unsigned char val = readw(pwMIDQData + 2 * head);
++
++ if (test_bit(MSNDMIDI_MODE_BIT_INPUT_TRIGGER, &mpu->mode))
++ snd_rawmidi_receive(mpu->substream_input, &val, 1);
++ if (++head > size)
++ head = 0;
++ writew(head, mpu->dev->MIDQ + JQS_wHead);
+ }
++ out:
+ spin_unlock_irqrestore(&mpu->input_lock, flags);
+ }
+ EXPORT_SYMBOL(snd_msndmidi_input_read);
+diff --git a/sound/isa/msnd/msnd_pinnacle.c b/sound/isa/msnd/msnd_pinnacle.c
+index 4c072666115d..a31ea6c22d19 100644
+--- a/sound/isa/msnd/msnd_pinnacle.c
++++ b/sound/isa/msnd/msnd_pinnacle.c
+@@ -170,23 +170,24 @@ static irqreturn_t snd_msnd_interrupt(int irq, void *dev_id)
+ {
+ struct snd_msnd *chip = dev_id;
+ void *pwDSPQData = chip->mappedbase + DSPQ_DATA_BUFF;
++ u16 head, tail, size;
+
+ /* Send ack to DSP */
+ /* inb(chip->io + HP_RXL); */
+
+ /* Evaluate queued DSP messages */
+- while (readw(chip->DSPQ + JQS_wTail) != readw(chip->DSPQ + JQS_wHead)) {
+- u16 wTmp;
+-
+- snd_msnd_eval_dsp_msg(chip,
+- readw(pwDSPQData + 2 * readw(chip->DSPQ + JQS_wHead)));
+-
+- wTmp = readw(chip->DSPQ + JQS_wHead) + 1;
+- if (wTmp > readw(chip->DSPQ + JQS_wSize))
+- writew(0, chip->DSPQ + JQS_wHead);
+- else
+- writew(wTmp, chip->DSPQ + JQS_wHead);
++ head = readw(chip->DSPQ + JQS_wHead);
++ tail = readw(chip->DSPQ + JQS_wTail);
++ size = readw(chip->DSPQ + JQS_wSize);
++ if (head > size || tail > size)
++ goto out;
++ while (head != tail) {
++ snd_msnd_eval_dsp_msg(chip, readw(pwDSPQData + 2 * head));
++ if (++head > size)
++ head = 0;
++ writew(head, chip->DSPQ + JQS_wHead);
+ }
++ out:
+ /* Send ack to DSP */
+ inb(chip->io + HP_RXL);
+ return IRQ_HANDLED;
+diff --git a/sound/pci/au88x0/au88x0_core.c b/sound/pci/au88x0/au88x0_core.c
+index 74177189063c..d3125c169684 100644
+--- a/sound/pci/au88x0/au88x0_core.c
++++ b/sound/pci/au88x0/au88x0_core.c
+@@ -2150,8 +2150,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
+ stream->resources, en,
+ VORTEX_RESOURCE_SRC)) < 0) {
+ memset(stream->resources, 0,
+- sizeof(unsigned char) *
+- VORTEX_RESOURCE_LAST);
++ sizeof(stream->resources));
+ return -EBUSY;
+ }
+ if (stream->type != VORTEX_PCM_A3D) {
+@@ -2161,7 +2160,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
+ VORTEX_RESOURCE_MIXIN)) < 0) {
+ memset(stream->resources,
+ 0,
+- sizeof(unsigned char) * VORTEX_RESOURCE_LAST);
++ sizeof(stream->resources));
+ return -EBUSY;
+ }
+ }
+@@ -2174,8 +2173,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
+ stream->resources, en,
+ VORTEX_RESOURCE_A3D)) < 0) {
+ memset(stream->resources, 0,
+- sizeof(unsigned char) *
+- VORTEX_RESOURCE_LAST);
++ sizeof(stream->resources));
+ dev_err(vortex->card->dev,
+ "out of A3D sources. Sorry\n");
+ return -EBUSY;
+@@ -2289,8 +2287,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
+ VORTEX_RESOURCE_MIXOUT))
+ < 0) {
+ memset(stream->resources, 0,
+- sizeof(unsigned char) *
+- VORTEX_RESOURCE_LAST);
++ sizeof(stream->resources));
+ return -EBUSY;
+ }
+ if ((src[i] =
+@@ -2298,8 +2295,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
+ stream->resources, en,
+ VORTEX_RESOURCE_SRC)) < 0) {
+ memset(stream->resources, 0,
+- sizeof(unsigned char) *
+- VORTEX_RESOURCE_LAST);
++ sizeof(stream->resources));
+ return -EBUSY;
+ }
+ }
+diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
+index 91b77bad03ea..a780540b7d4f 100644
+--- a/sound/pci/hda/patch_conexant.c
++++ b/sound/pci/hda/patch_conexant.c
+@@ -827,6 +827,7 @@ static const struct snd_pci_quirk cxt5066_fixups[] = {
+ SND_PCI_QUIRK(0x17aa, 0x390b, "Lenovo G50-80", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x3975, "Lenovo U300s", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x3977, "Lenovo IdeaPad U310", CXT_FIXUP_STEREO_DMIC),
++ SND_PCI_QUIRK(0x17aa, 0x3978, "Lenovo G50-70", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x397b, "Lenovo S205", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK_VENDOR(0x17aa, "Thinkpad", CXT_FIXUP_THINKPAD_ACPI),
+ SND_PCI_QUIRK(0x1c06, 0x2011, "Lemote A1004", CXT_PINCFG_LEMOTE_A1004),
+diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
+index 7bb9c087f3dc..4599983cfc8a 100644
+--- a/sound/soc/sh/rcar/ssi.c
++++ b/sound/soc/sh/rcar/ssi.c
+@@ -39,6 +39,7 @@
+ #define SCKP (1 << 13) /* Serial Bit Clock Polarity */
+ #define SWSP (1 << 12) /* Serial WS Polarity */
+ #define SDTA (1 << 10) /* Serial Data Alignment */
++#define PDTA (1 << 9) /* Parallel Data Alignment */
+ #define DEL (1 << 8) /* Serial Data Delay */
+ #define CKDV(v) (v << 4) /* Serial Clock Division Ratio */
+ #define TRMD (1 << 1) /* Transmit/Receive Mode Select */
+@@ -278,7 +279,7 @@ static int rsnd_ssi_init(struct rsnd_mod *mod,
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ u32 cr;
+
+- cr = FORCE;
++ cr = FORCE | PDTA;
+
+ /*
+ * always use 32bit system word for easy clock calculation.
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index 4a033cbbd361..33c544acf3f6 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -541,6 +541,8 @@ int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
+
+ if (size < sizeof(scale))
+ return -ENOMEM;
++ if (cval->min_mute)
++ scale[0] = SNDRV_CTL_TLVT_DB_MINMAX_MUTE;
+ scale[2] = cval->dBmin;
+ scale[3] = cval->dBmax;
+ if (copy_to_user(_tlv, scale, sizeof(scale)))
+diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h
+index 3417ef347e40..2b4b067646ab 100644
+--- a/sound/usb/mixer.h
++++ b/sound/usb/mixer.h
+@@ -64,6 +64,7 @@ struct usb_mixer_elem_info {
+ int cached;
+ int cache_val[MAX_CHANNELS];
+ u8 initialized;
++ u8 min_mute;
+ void *private_data;
+ };
+
+diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
+index 940442848fc8..de3f18059213 100644
+--- a/sound/usb/mixer_quirks.c
++++ b/sound/usb/mixer_quirks.c
+@@ -1863,6 +1863,12 @@ void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
+ if (unitid == 7 && cval->min == 0 && cval->max == 50)
+ snd_dragonfly_quirk_db_scale(mixer, kctl);
+ break;
++ /* lowest playback value is muted on C-Media devices */
++ case USB_ID(0x0d8c, 0x000c):
++ case USB_ID(0x0d8c, 0x0014):
++ if (strstr(kctl->id.name, "Playback"))
++ cval->min_mute = 1;
++ break;
+ }
+ }
+
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 2c71e5682716..693b2ac6720a 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1138,6 +1138,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
+ case USB_ID(0x0556, 0x0014): /* Phoenix Audio TMX320VC */
+ case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
++ case USB_ID(0x1395, 0x740a): /* Sennheiser DECT */
+ case USB_ID(0x1901, 0x0191): /* GE B850V3 CP2114 audio interface */
+ case USB_ID(0x1de7, 0x0013): /* Phoenix Audio MT202exe */
+ case USB_ID(0x1de7, 0x0014): /* Phoenix Audio TMX320 */
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-09-13 19:38 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-09-13 19:38 UTC (permalink / raw
To: gentoo-commits
commit: 853af618e0ee4cee610f17b65bf4d1d60a7f3da2
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Sep 13 19:38:16 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Sep 13 19:38:16 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=853af618
Validate the output buffer length for L2CAP config reqs and resps to avoid stack buffer overflowing. CVE-2017-1000251. See bug #630840
0000_README | 4 +
2400_BT-check-L2CAP-buffer-length.patch | 357 ++++++++++++++++++++++++++++++++
2 files changed, 361 insertions(+)
diff --git a/0000_README b/0000_README
index 60f0ad1..959795e 100644
--- a/0000_README
+++ b/0000_README
@@ -231,6 +231,10 @@ Patch: 1800_fix-lru-cache-add-oom-regression.patch
From: http://thread.gmane.org/gmane.linux.kernel.stable/184384
Desc: Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
+Patch: 2400_BT-check-L2CAP-buffer-length.patch
+From: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e860d2c904d1a9f38a24eb44c9f34b8f915a6ea3
+Desc: Validate the output buffer length for L2CAP config reqs and resps to avoid stack buffer overflowing. CVE-2017-1000251. See bug #630840
+
Patch: 2700_ThinkPad-30-brightness-control-fix.patch
From: Seth Forshee <seth.forshee@canonical.com>
Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
diff --git a/2400_BT-check-L2CAP-buffer-length.patch b/2400_BT-check-L2CAP-buffer-length.patch
new file mode 100644
index 0000000..c6bfdf7
--- /dev/null
+++ b/2400_BT-check-L2CAP-buffer-length.patch
@@ -0,0 +1,357 @@
+From e860d2c904d1a9f38a24eb44c9f34b8f915a6ea3 Mon Sep 17 00:00:00 2001
+From: Ben Seri <ben@armis.com>
+Date: Sat, 9 Sep 2017 23:15:59 +0200
+Subject: Bluetooth: Properly check L2CAP config option output buffer length
+
+Validate the output buffer length for L2CAP config requests and responses
+to avoid overflowing the stack buffer used for building the option blocks.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Ben Seri <ben@armis.com>
+Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+---
+ net/bluetooth/l2cap_core.c | 80 +++++++++++++++++++++++++---------------------
+ 1 file changed, 43 insertions(+), 37 deletions(-)
+
+diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
+index 303c779..43ba91c 100644
+--- a/net/bluetooth/l2cap_core.c
++++ b/net/bluetooth/l2cap_core.c
+@@ -58,7 +58,7 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
+ u8 code, u8 ident, u16 dlen, void *data);
+ static void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len,
+ void *data);
+-static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data);
++static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data, size_t data_size);
+ static void l2cap_send_disconn_req(struct l2cap_chan *chan, int err);
+
+ static void l2cap_tx(struct l2cap_chan *chan, struct l2cap_ctrl *control,
+@@ -1473,7 +1473,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
+
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+
+@@ -2987,12 +2987,15 @@ static inline int l2cap_get_conf_opt(void **ptr, int *type, int *olen,
+ return len;
+ }
+
+-static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
++static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val, size_t size)
+ {
+ struct l2cap_conf_opt *opt = *ptr;
+
+ BT_DBG("type 0x%2.2x len %u val 0x%lx", type, len, val);
+
++ if (size < L2CAP_CONF_OPT_SIZE + len)
++ return;
++
+ opt->type = type;
+ opt->len = len;
+
+@@ -3017,7 +3020,7 @@ static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
+ *ptr += L2CAP_CONF_OPT_SIZE + len;
+ }
+
+-static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan)
++static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan, size_t size)
+ {
+ struct l2cap_conf_efs efs;
+
+@@ -3045,7 +3048,7 @@ static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan)
+ }
+
+ l2cap_add_conf_opt(ptr, L2CAP_CONF_EFS, sizeof(efs),
+- (unsigned long) &efs);
++ (unsigned long) &efs, size);
+ }
+
+ static void l2cap_ack_timeout(struct work_struct *work)
+@@ -3191,11 +3194,12 @@ static inline void l2cap_txwin_setup(struct l2cap_chan *chan)
+ chan->ack_win = chan->tx_win;
+ }
+
+-static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
++static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data, size_t data_size)
+ {
+ struct l2cap_conf_req *req = data;
+ struct l2cap_conf_rfc rfc = { .mode = chan->mode };
+ void *ptr = req->data;
++ void *endptr = data + data_size;
+ u16 size;
+
+ BT_DBG("chan %p", chan);
+@@ -3220,7 +3224,7 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
+
+ done:
+ if (chan->imtu != L2CAP_DEFAULT_MTU)
+- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
++ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu, endptr - ptr);
+
+ switch (chan->mode) {
+ case L2CAP_MODE_BASIC:
+@@ -3239,7 +3243,7 @@ done:
+ rfc.max_pdu_size = 0;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+ break;
+
+ case L2CAP_MODE_ERTM:
+@@ -3259,21 +3263,21 @@ done:
+ L2CAP_DEFAULT_TX_WINDOW);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags))
+- l2cap_add_opt_efs(&ptr, chan);
++ l2cap_add_opt_efs(&ptr, chan, endptr - ptr);
+
+ if (test_bit(FLAG_EXT_CTRL, &chan->flags))
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS, 2,
+- chan->tx_win);
++ chan->tx_win, endptr - ptr);
+
+ if (chan->conn->feat_mask & L2CAP_FEAT_FCS)
+ if (chan->fcs == L2CAP_FCS_NONE ||
+ test_bit(CONF_RECV_NO_FCS, &chan->conf_state)) {
+ chan->fcs = L2CAP_FCS_NONE;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1,
+- chan->fcs);
++ chan->fcs, endptr - ptr);
+ }
+ break;
+
+@@ -3291,17 +3295,17 @@ done:
+ rfc.max_pdu_size = cpu_to_le16(size);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags))
+- l2cap_add_opt_efs(&ptr, chan);
++ l2cap_add_opt_efs(&ptr, chan, endptr - ptr);
+
+ if (chan->conn->feat_mask & L2CAP_FEAT_FCS)
+ if (chan->fcs == L2CAP_FCS_NONE ||
+ test_bit(CONF_RECV_NO_FCS, &chan->conf_state)) {
+ chan->fcs = L2CAP_FCS_NONE;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1,
+- chan->fcs);
++ chan->fcs, endptr - ptr);
+ }
+ break;
+ }
+@@ -3312,10 +3316,11 @@ done:
+ return ptr - data;
+ }
+
+-static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data)
++static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data, size_t data_size)
+ {
+ struct l2cap_conf_rsp *rsp = data;
+ void *ptr = rsp->data;
++ void *endptr = data + data_size;
+ void *req = chan->conf_req;
+ int len = chan->conf_len;
+ int type, hint, olen;
+@@ -3417,7 +3422,7 @@ done:
+ return -ECONNREFUSED;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+ }
+
+ if (result == L2CAP_CONF_SUCCESS) {
+@@ -3430,7 +3435,7 @@ done:
+ chan->omtu = mtu;
+ set_bit(CONF_MTU_DONE, &chan->conf_state);
+ }
+- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu);
++ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu, endptr - ptr);
+
+ if (remote_efs) {
+ if (chan->local_stype != L2CAP_SERV_NOTRAFIC &&
+@@ -3444,7 +3449,7 @@ done:
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
+ sizeof(efs),
+- (unsigned long) &efs);
++ (unsigned long) &efs, endptr - ptr);
+ } else {
+ /* Send PENDING Conf Rsp */
+ result = L2CAP_CONF_PENDING;
+@@ -3477,7 +3482,7 @@ done:
+ set_bit(CONF_MODE_DONE, &chan->conf_state);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+- sizeof(rfc), (unsigned long) &rfc);
++ sizeof(rfc), (unsigned long) &rfc, endptr - ptr);
+
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags)) {
+ chan->remote_id = efs.id;
+@@ -3491,7 +3496,7 @@ done:
+ le32_to_cpu(efs.sdu_itime);
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
+ sizeof(efs),
+- (unsigned long) &efs);
++ (unsigned long) &efs, endptr - ptr);
+ }
+ break;
+
+@@ -3505,7 +3510,7 @@ done:
+ set_bit(CONF_MODE_DONE, &chan->conf_state);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+- (unsigned long) &rfc);
++ (unsigned long) &rfc, endptr - ptr);
+
+ break;
+
+@@ -3527,10 +3532,11 @@ done:
+ }
+
+ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+- void *data, u16 *result)
++ void *data, size_t size, u16 *result)
+ {
+ struct l2cap_conf_req *req = data;
+ void *ptr = req->data;
++ void *endptr = data + size;
+ int type, olen;
+ unsigned long val;
+ struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
+@@ -3548,13 +3554,13 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+ chan->imtu = L2CAP_DEFAULT_MIN_MTU;
+ } else
+ chan->imtu = val;
+- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
++ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_FLUSH_TO:
+ chan->flush_to = val;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO,
+- 2, chan->flush_to);
++ 2, chan->flush_to, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_RFC:
+@@ -3568,13 +3574,13 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+ chan->fcs = 0;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+- sizeof(rfc), (unsigned long) &rfc);
++ sizeof(rfc), (unsigned long) &rfc, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_EWS:
+ chan->ack_win = min_t(u16, val, chan->ack_win);
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS, 2,
+- chan->tx_win);
++ chan->tx_win, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_EFS:
+@@ -3587,7 +3593,7 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
+ return -ECONNREFUSED;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs),
+- (unsigned long) &efs);
++ (unsigned long) &efs, endptr - ptr);
+ break;
+
+ case L2CAP_CONF_FCS:
+@@ -3692,7 +3698,7 @@ void __l2cap_connect_rsp_defer(struct l2cap_chan *chan)
+ return;
+
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+
+@@ -3900,7 +3906,7 @@ sendresp:
+ u8 buf[128];
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+
+@@ -3978,7 +3984,7 @@ static int l2cap_connect_create_rsp(struct l2cap_conn *conn,
+ break;
+
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, req), req);
++ l2cap_build_conf_req(chan, req, sizeof(req)), req);
+ chan->num_conf_req++;
+ break;
+
+@@ -4090,7 +4096,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
+ }
+
+ /* Complete config. */
+- len = l2cap_parse_conf_req(chan, rsp);
++ len = l2cap_parse_conf_req(chan, rsp, sizeof(rsp));
+ if (len < 0) {
+ l2cap_send_disconn_req(chan, ECONNRESET);
+ goto unlock;
+@@ -4124,7 +4130,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
+ if (!test_and_set_bit(CONF_REQ_SENT, &chan->conf_state)) {
+ u8 buf[64];
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+
+@@ -4184,7 +4190,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn,
+ char buf[64];
+
+ len = l2cap_parse_conf_rsp(chan, rsp->data, len,
+- buf, &result);
++ buf, sizeof(buf), &result);
+ if (len < 0) {
+ l2cap_send_disconn_req(chan, ECONNRESET);
+ goto done;
+@@ -4214,7 +4220,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn,
+ /* throw out any old stored conf requests */
+ result = L2CAP_CONF_SUCCESS;
+ len = l2cap_parse_conf_rsp(chan, rsp->data, len,
+- req, &result);
++ req, sizeof(req), &result);
+ if (len < 0) {
+ l2cap_send_disconn_req(chan, ECONNRESET);
+ goto done;
+@@ -4791,7 +4797,7 @@ static void l2cap_do_create(struct l2cap_chan *chan, int result,
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(chan->conn, l2cap_get_ident(chan->conn),
+ L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf), buf);
++ l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
+ chan->num_conf_req++;
+ }
+ }
+@@ -7465,7 +7471,7 @@ static void l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn),
+ L2CAP_CONF_REQ,
+- l2cap_build_conf_req(chan, buf),
++ l2cap_build_conf_req(chan, buf, sizeof(buf)),
+ buf);
+ chan->num_conf_req++;
+ }
+--
+cgit v1.1
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-08-06 18:01 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-08-06 18:01 UTC (permalink / raw
To: gentoo-commits
commit: 5a402b476904049d5733853f1cee6216b9a21424
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sun Aug 6 18:01:10 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sun Aug 6 18:01:10 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=5a402b47
Linux patch 4.1.43
0000_README | 4 +
1042_linux-4.1.43.patch | 5611 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 5615 insertions(+)
diff --git a/0000_README b/0000_README
index 85eb55c..60f0ad1 100644
--- a/0000_README
+++ b/0000_README
@@ -211,6 +211,10 @@ Patch: 1041_linux-4.1.42.patch
From: http://www.kernel.org
Desc: Linux 4.1.42
+Patch: 1042_linux-4.1.43.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.43
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1042_linux-4.1.43.patch b/1042_linux-4.1.43.patch
new file mode 100644
index 0000000..ad0b111
--- /dev/null
+++ b/1042_linux-4.1.43.patch
@@ -0,0 +1,5611 @@
+diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
+index c831001c45f1..4c88aa047790 100644
+--- a/Documentation/sysctl/kernel.txt
++++ b/Documentation/sysctl/kernel.txt
+@@ -798,14 +798,13 @@ via the /proc/sys interface:
+ Each write syscall must fully contain the sysctl value to be
+ written, and multiple writes on the same sysctl file descriptor
+ will rewrite the sysctl value, regardless of file position.
+- 0 - (default) Same behavior as above, but warn about processes that
+- perform writes to a sysctl file descriptor when the file position
+- is not 0.
+- 1 - Respect file position when writing sysctl strings. Multiple writes
+- will append to the sysctl value buffer. Anything past the max length
+- of the sysctl value buffer will be ignored. Writes to numeric sysctl
+- entries must always be at file position 0 and the value must be
+- fully contained in the buffer sent in the write syscall.
++ 0 - Same behavior as above, but warn about processes that perform writes
++ to a sysctl file descriptor when the file position is not 0.
++ 1 - (default) Respect file position when writing sysctl strings. Multiple
++ writes will append to the sysctl value buffer. Anything past the max
++ length of the sysctl value buffer will be ignored. Writes to numeric
++ sysctl entries must always be at file position 0 and the value must
++ be fully contained in the buffer sent in the write syscall.
+
+ ==============================================================
+
+diff --git a/Makefile b/Makefile
+index 0c3313f14ff0..50d0a93fa343 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 42
++SUBLEVEL = 43
+ EXTRAVERSION =
+ NAME = Series 4800
+
+@@ -622,6 +622,12 @@ endif
+ # Tell gcc to never replace conditional load with a non-conditional one
+ KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
+
++# check for 'asm goto'
++ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
++ KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
++ KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
++endif
++
+ ifdef CONFIG_READABLE_ASM
+ # Disable optimizations that make assembler listings hard to read.
+ # reorder blocks reorders the control in the function
+@@ -777,12 +783,6 @@ KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
+ # use the deterministic mode of AR if available
+ KBUILD_ARFLAGS := $(call ar-option,D)
+
+-# check for 'asm goto'
+-ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
+- KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
+- KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
+-endif
+-
+ include scripts/Makefile.kasan
+ include scripts/Makefile.extrawarn
+
+diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
+index 78aec6270c2f..90fbda066122 100644
+--- a/arch/arm/boot/dts/bcm5301x.dtsi
++++ b/arch/arm/boot/dts/bcm5301x.dtsi
+@@ -54,14 +54,14 @@
+ timer@0200 {
+ compatible = "arm,cortex-a9-global-timer";
+ reg = <0x0200 0x100>;
+- interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
++ interrupts = <GIC_PPI 11 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&clk_periph>;
+ };
+
+ local-timer@0600 {
+ compatible = "arm,cortex-a9-twd-timer";
+ reg = <0x0600 0x100>;
+- interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH>;
++ interrupts = <GIC_PPI 13 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&clk_periph>;
+ };
+
+diff --git a/arch/arm/boot/dts/imx6dl.dtsi b/arch/arm/boot/dts/imx6dl.dtsi
+index f94bf72832af..d6da4cc23920 100644
+--- a/arch/arm/boot/dts/imx6dl.dtsi
++++ b/arch/arm/boot/dts/imx6dl.dtsi
+@@ -30,7 +30,7 @@
+ /* kHz uV */
+ 996000 1250000
+ 792000 1175000
+- 396000 1075000
++ 396000 1150000
+ >;
+ fsl,soc-operating-points = <
+ /* ARM kHz SOC-PU uV */
+diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
+index d2315ffd8f12..f13ae153fb24 100644
+--- a/arch/arm/include/asm/elf.h
++++ b/arch/arm/include/asm/elf.h
+@@ -112,12 +112,8 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
+ #define CORE_DUMP_USE_REGSET
+ #define ELF_EXEC_PAGESIZE 4096
+
+-/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
+- use of this is to invoke "./ld.so someprog" to test out a new version of
+- the loader. We need to make sure that it is out of the way of the program
+- that it will "exec", and that there is sufficient room for the brk. */
+-
+-#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
++/* This is the base location for PIE (ET_DYN with INTERP) loads. */
++#define ELF_ET_DYN_BASE 0x400000UL
+
+ /* When the program starts, a1 contains a pointer to a function to be
+ registered with atexit, as per the SVR4 ABI. A value of 0 means we
+diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
+index 7186382672b5..d89d35b40e47 100644
+--- a/arch/arm/mm/mmu.c
++++ b/arch/arm/mm/mmu.c
+@@ -1136,15 +1136,15 @@ void __init sanity_check_meminfo(void)
+
+ high_memory = __va(arm_lowmem_limit - 1) + 1;
+
++ if (!memblock_limit)
++ memblock_limit = arm_lowmem_limit;
++
+ /*
+ * Round the memblock limit down to a pmd size. This
+ * helps to ensure that we will allocate memory from the
+ * last full pmd, which should be mapped.
+ */
+- if (memblock_limit)
+- memblock_limit = round_down(memblock_limit, PMD_SIZE);
+- if (!memblock_limit)
+- memblock_limit = arm_lowmem_limit;
++ memblock_limit = round_down(memblock_limit, PMD_SIZE);
+
+ memblock_set_current_limit(memblock_limit);
+ }
+diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
+index 71f19c4dc0de..ffe7850afdbd 100644
+--- a/arch/arm64/include/asm/barrier.h
++++ b/arch/arm64/include/asm/barrier.h
+@@ -63,23 +63,33 @@ do { \
+
+ #define smp_store_release(p, v) \
+ do { \
++ union { typeof(*p) __val; char __c[1]; } __u = \
++ { .__val = (__force typeof(*p)) (v) }; \
+ compiletime_assert_atomic_type(*p); \
+ switch (sizeof(*p)) { \
+ case 1: \
+ asm volatile ("stlrb %w1, %0" \
+- : "=Q" (*p) : "r" (v) : "memory"); \
++ : "=Q" (*p) \
++ : "r" (*(__u8 *)__u.__c) \
++ : "memory"); \
+ break; \
+ case 2: \
+ asm volatile ("stlrh %w1, %0" \
+- : "=Q" (*p) : "r" (v) : "memory"); \
++ : "=Q" (*p) \
++ : "r" (*(__u16 *)__u.__c) \
++ : "memory"); \
+ break; \
+ case 4: \
+ asm volatile ("stlr %w1, %0" \
+- : "=Q" (*p) : "r" (v) : "memory"); \
++ : "=Q" (*p) \
++ : "r" (*(__u32 *)__u.__c) \
++ : "memory"); \
+ break; \
+ case 8: \
+ asm volatile ("stlr %1, %0" \
+- : "=Q" (*p) : "r" (v) : "memory"); \
++ : "=Q" (*p) \
++ : "r" (*(__u64 *)__u.__c) \
++ : "memory"); \
+ break; \
+ } \
+ } while (0)
+diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c
+index 7ac3920b1356..802dd71ed0b3 100644
+--- a/arch/arm64/kernel/armv8_deprecated.c
++++ b/arch/arm64/kernel/armv8_deprecated.c
+@@ -298,7 +298,8 @@ static void register_insn_emulation_sysctl(struct ctl_table *table)
+ " .quad 1b, 4b\n" \
+ " .popsection\n" \
+ : "=&r" (res), "+r" (data), "=&r" (temp) \
+- : "r" (addr), "i" (-EAGAIN), "i" (-EFAULT) \
++ : "r" ((unsigned long)addr), "i" (-EAGAIN), \
++ "i" (-EFAULT) \
+ : "memory")
+
+ #define __user_swp_asm(data, addr, res, temp) \
+diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
+index 7791840cf22c..db07793f7b43 100644
+--- a/arch/mips/kernel/entry.S
++++ b/arch/mips/kernel/entry.S
+@@ -11,6 +11,7 @@
+ #include <asm/asm.h>
+ #include <asm/asmmacro.h>
+ #include <asm/compiler.h>
++#include <asm/irqflags.h>
+ #include <asm/regdef.h>
+ #include <asm/mipsregs.h>
+ #include <asm/stackframe.h>
+@@ -137,6 +138,7 @@ work_pending:
+ andi t0, a2, _TIF_NEED_RESCHED # a2 is preloaded with TI_FLAGS
+ beqz t0, work_notifysig
+ work_resched:
++ TRACE_IRQS_OFF
+ jal schedule
+
+ local_irq_disable # make sure need_resched and
+@@ -173,6 +175,7 @@ syscall_exit_work:
+ beqz t0, work_pending # trace bit set?
+ local_irq_enable # could let syscall_trace_leave()
+ # call schedule() instead
++ TRACE_IRQS_ON
+ move a0, sp
+ jal syscall_trace_leave
+ b resume_userspace
+diff --git a/arch/mips/kernel/pm-cps.c b/arch/mips/kernel/pm-cps.c
+index 06147179a175..cd25b616075d 100644
+--- a/arch/mips/kernel/pm-cps.c
++++ b/arch/mips/kernel/pm-cps.c
+@@ -55,7 +55,6 @@ DECLARE_BITMAP(state_support, CPS_PM_STATE_COUNT);
+ * state. Actually per-core rather than per-CPU.
+ */
+ static DEFINE_PER_CPU_ALIGNED(u32*, ready_count);
+-static DEFINE_PER_CPU_ALIGNED(void*, ready_count_alloc);
+
+ /* Indicates online CPUs coupled with the current CPU */
+ static DEFINE_PER_CPU_ALIGNED(cpumask_t, online_coupled);
+@@ -624,7 +623,6 @@ static int __init cps_gen_core_entries(unsigned cpu)
+ {
+ enum cps_pm_state state;
+ unsigned core = cpu_data[cpu].core;
+- unsigned dlinesz = cpu_data[cpu].dcache.linesz;
+ void *entry_fn, *core_rc;
+
+ for (state = CPS_PM_NC_WAIT; state < CPS_PM_STATE_COUNT; state++) {
+@@ -644,16 +642,11 @@ static int __init cps_gen_core_entries(unsigned cpu)
+ }
+
+ if (!per_cpu(ready_count, core)) {
+- core_rc = kmalloc(dlinesz * 2, GFP_KERNEL);
++ core_rc = kmalloc(sizeof(u32), GFP_KERNEL);
+ if (!core_rc) {
+ pr_err("Failed allocate core %u ready_count\n", core);
+ return -ENOMEM;
+ }
+- per_cpu(ready_count_alloc, core) = core_rc;
+-
+- /* Ensure ready_count is aligned to a cacheline boundary */
+- core_rc += dlinesz - 1;
+- core_rc = (void *)((unsigned long)core_rc & ~(dlinesz - 1));
+ per_cpu(ready_count, core) = core_rc;
+ }
+
+diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
+index 74403953e407..2e29b1aed924 100644
+--- a/arch/mips/kernel/traps.c
++++ b/arch/mips/kernel/traps.c
+@@ -193,6 +193,8 @@ void show_stack(struct task_struct *task, unsigned long *sp)
+ {
+ struct pt_regs regs;
+ mm_segment_t old_fs = get_fs();
++
++ regs.cp0_status = KSU_KERNEL;
+ if (sp) {
+ regs.regs[29] = (unsigned long)sp;
+ regs.regs[31] = 0;
+diff --git a/arch/mips/ralink/mt7620.c b/arch/mips/ralink/mt7620.c
+index 2ea5ff6dc22e..c57215a66181 100644
+--- a/arch/mips/ralink/mt7620.c
++++ b/arch/mips/ralink/mt7620.c
+@@ -98,31 +98,31 @@ static struct rt2880_pmx_group mt7620a_pinmux_data[] = {
+ };
+
+ static struct rt2880_pmx_func pwm1_grp_mt7628[] = {
+- FUNC("sdcx", 3, 19, 1),
++ FUNC("sdxc d6", 3, 19, 1),
+ FUNC("utif", 2, 19, 1),
+ FUNC("gpio", 1, 19, 1),
+- FUNC("pwm", 0, 19, 1),
++ FUNC("pwm1", 0, 19, 1),
+ };
+
+ static struct rt2880_pmx_func pwm0_grp_mt7628[] = {
+- FUNC("sdcx", 3, 18, 1),
++ FUNC("sdxc d7", 3, 18, 1),
+ FUNC("utif", 2, 18, 1),
+ FUNC("gpio", 1, 18, 1),
+- FUNC("pwm", 0, 18, 1),
++ FUNC("pwm0", 0, 18, 1),
+ };
+
+ static struct rt2880_pmx_func uart2_grp_mt7628[] = {
+- FUNC("sdcx", 3, 20, 2),
++ FUNC("sdxc d5 d4", 3, 20, 2),
+ FUNC("pwm", 2, 20, 2),
+ FUNC("gpio", 1, 20, 2),
+- FUNC("uart", 0, 20, 2),
++ FUNC("uart2", 0, 20, 2),
+ };
+
+ static struct rt2880_pmx_func uart1_grp_mt7628[] = {
+- FUNC("sdcx", 3, 45, 2),
++ FUNC("sw_r", 3, 45, 2),
+ FUNC("pwm", 2, 45, 2),
+ FUNC("gpio", 1, 45, 2),
+- FUNC("uart", 0, 45, 2),
++ FUNC("uart1", 0, 45, 2),
+ };
+
+ static struct rt2880_pmx_func i2c_grp_mt7628[] = {
+@@ -134,21 +134,21 @@ static struct rt2880_pmx_func i2c_grp_mt7628[] = {
+
+ static struct rt2880_pmx_func refclk_grp_mt7628[] = { FUNC("reclk", 0, 36, 1) };
+ static struct rt2880_pmx_func perst_grp_mt7628[] = { FUNC("perst", 0, 37, 1) };
+-static struct rt2880_pmx_func wdt_grp_mt7628[] = { FUNC("wdt", 0, 15, 38) };
++static struct rt2880_pmx_func wdt_grp_mt7628[] = { FUNC("wdt", 0, 38, 1) };
+ static struct rt2880_pmx_func spi_grp_mt7628[] = { FUNC("spi", 0, 7, 4) };
+
+ static struct rt2880_pmx_func sd_mode_grp_mt7628[] = {
+ FUNC("jtag", 3, 22, 8),
+ FUNC("utif", 2, 22, 8),
+ FUNC("gpio", 1, 22, 8),
+- FUNC("sdcx", 0, 22, 8),
++ FUNC("sdxc", 0, 22, 8),
+ };
+
+ static struct rt2880_pmx_func uart0_grp_mt7628[] = {
+ FUNC("-", 3, 12, 2),
+ FUNC("-", 2, 12, 2),
+ FUNC("gpio", 1, 12, 2),
+- FUNC("uart", 0, 12, 2),
++ FUNC("uart0", 0, 12, 2),
+ };
+
+ static struct rt2880_pmx_func i2s_grp_mt7628[] = {
+@@ -162,7 +162,7 @@ static struct rt2880_pmx_func spi_cs1_grp_mt7628[] = {
+ FUNC("-", 3, 6, 1),
+ FUNC("refclk", 2, 6, 1),
+ FUNC("gpio", 1, 6, 1),
+- FUNC("spi", 0, 6, 1),
++ FUNC("spi cs1", 0, 6, 1),
+ };
+
+ static struct rt2880_pmx_func spis_grp_mt7628[] = {
+@@ -179,28 +179,44 @@ static struct rt2880_pmx_func gpio_grp_mt7628[] = {
+ FUNC("gpio", 0, 11, 1),
+ };
+
+-#define MT7628_GPIO_MODE_MASK 0x3
+-
+-#define MT7628_GPIO_MODE_PWM1 30
+-#define MT7628_GPIO_MODE_PWM0 28
+-#define MT7628_GPIO_MODE_UART2 26
+-#define MT7628_GPIO_MODE_UART1 24
+-#define MT7628_GPIO_MODE_I2C 20
+-#define MT7628_GPIO_MODE_REFCLK 18
+-#define MT7628_GPIO_MODE_PERST 16
+-#define MT7628_GPIO_MODE_WDT 14
+-#define MT7628_GPIO_MODE_SPI 12
+-#define MT7628_GPIO_MODE_SDMODE 10
+-#define MT7628_GPIO_MODE_UART0 8
+-#define MT7628_GPIO_MODE_I2S 6
+-#define MT7628_GPIO_MODE_CS1 4
+-#define MT7628_GPIO_MODE_SPIS 2
+-#define MT7628_GPIO_MODE_GPIO 0
++static struct rt2880_pmx_func wled_kn_grp_mt7628[] = {
++ FUNC("rsvd", 3, 35, 1),
++ FUNC("rsvd", 2, 35, 1),
++ FUNC("gpio", 1, 35, 1),
++ FUNC("wled_kn", 0, 35, 1),
++};
++
++static struct rt2880_pmx_func wled_an_grp_mt7628[] = {
++ FUNC("rsvd", 3, 44, 1),
++ FUNC("rsvd", 2, 44, 1),
++ FUNC("gpio", 1, 44, 1),
++ FUNC("wled_an", 0, 44, 1),
++};
++
++#define MT7628_GPIO_MODE_MASK 0x3
++
++#define MT7628_GPIO_MODE_WLED_KN 48
++#define MT7628_GPIO_MODE_WLED_AN 32
++#define MT7628_GPIO_MODE_PWM1 30
++#define MT7628_GPIO_MODE_PWM0 28
++#define MT7628_GPIO_MODE_UART2 26
++#define MT7628_GPIO_MODE_UART1 24
++#define MT7628_GPIO_MODE_I2C 20
++#define MT7628_GPIO_MODE_REFCLK 18
++#define MT7628_GPIO_MODE_PERST 16
++#define MT7628_GPIO_MODE_WDT 14
++#define MT7628_GPIO_MODE_SPI 12
++#define MT7628_GPIO_MODE_SDMODE 10
++#define MT7628_GPIO_MODE_UART0 8
++#define MT7628_GPIO_MODE_I2S 6
++#define MT7628_GPIO_MODE_CS1 4
++#define MT7628_GPIO_MODE_SPIS 2
++#define MT7628_GPIO_MODE_GPIO 0
+
+ static struct rt2880_pmx_group mt7628an_pinmux_data[] = {
+- GRP_G("pmw1", pwm1_grp_mt7628, MT7628_GPIO_MODE_MASK,
++ GRP_G("pwm1", pwm1_grp_mt7628, MT7628_GPIO_MODE_MASK,
+ 1, MT7628_GPIO_MODE_PWM1),
+- GRP_G("pmw1", pwm0_grp_mt7628, MT7628_GPIO_MODE_MASK,
++ GRP_G("pwm0", pwm0_grp_mt7628, MT7628_GPIO_MODE_MASK,
+ 1, MT7628_GPIO_MODE_PWM0),
+ GRP_G("uart2", uart2_grp_mt7628, MT7628_GPIO_MODE_MASK,
+ 1, MT7628_GPIO_MODE_UART2),
+@@ -224,6 +240,10 @@ static struct rt2880_pmx_group mt7628an_pinmux_data[] = {
+ 1, MT7628_GPIO_MODE_SPIS),
+ GRP_G("gpio", gpio_grp_mt7628, MT7628_GPIO_MODE_MASK,
+ 1, MT7628_GPIO_MODE_GPIO),
++ GRP_G("wled_an", wled_an_grp_mt7628, MT7628_GPIO_MODE_MASK,
++ 1, MT7628_GPIO_MODE_WLED_AN),
++ GRP_G("wled_kn", wled_kn_grp_mt7628, MT7628_GPIO_MODE_MASK,
++ 1, MT7628_GPIO_MODE_WLED_KN),
+ { 0 }
+ };
+
+diff --git a/arch/parisc/include/asm/dma-mapping.h b/arch/parisc/include/asm/dma-mapping.h
+index d0eae5f2bd87..4fb62add2636 100644
+--- a/arch/parisc/include/asm/dma-mapping.h
++++ b/arch/parisc/include/asm/dma-mapping.h
+@@ -39,6 +39,8 @@ struct hppa_dma_ops {
+ ** flush/purge and allocate "regular" cacheable pages for everything.
+ */
+
++#define DMA_ERROR_CODE (~(dma_addr_t)0)
++
+ #ifdef CONFIG_PA11
+ extern struct hppa_dma_ops pcxl_dma_ops;
+ extern struct hppa_dma_ops pcx_dma_ops;
+@@ -209,12 +211,13 @@ parisc_walk_tree(struct device *dev)
+ break;
+ }
+ }
+- BUG_ON(!dev->platform_data);
+ return dev->platform_data;
+ }
+-
+-#define GET_IOC(dev) (HBA_DATA(parisc_walk_tree(dev))->iommu)
+-
++
++#define GET_IOC(dev) ({ \
++ void *__pdata = parisc_walk_tree(dev); \
++ __pdata ? HBA_DATA(__pdata)->iommu : NULL; \
++})
+
+ #ifdef CONFIG_IOMMU_CCIO
+ struct parisc_device;
+diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
+index 8eefb12d1d33..3781b8c0fad9 100644
+--- a/arch/parisc/kernel/syscall_table.S
++++ b/arch/parisc/kernel/syscall_table.S
+@@ -361,7 +361,7 @@
+ ENTRY_SAME(ni_syscall) /* 263: reserved for vserver */
+ ENTRY_SAME(add_key)
+ ENTRY_SAME(request_key) /* 265 */
+- ENTRY_SAME(keyctl)
++ ENTRY_COMP(keyctl)
+ ENTRY_SAME(ioprio_set)
+ ENTRY_SAME(ioprio_get)
+ ENTRY_SAME(inotify_init)
+diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
+index 50d64a7fc672..3b7c02f9b726 100644
+--- a/arch/parisc/mm/fault.c
++++ b/arch/parisc/mm/fault.c
+@@ -303,7 +303,7 @@ bad_area:
+ case 15: /* Data TLB miss fault/Data page fault */
+ /* send SIGSEGV when outside of vma */
+ if (!vma ||
+- address < vma->vm_start || address > vma->vm_end) {
++ address < vma->vm_start || address >= vma->vm_end) {
+ si.si_signo = SIGSEGV;
+ si.si_code = SEGV_MAPERR;
+ break;
+diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
+index ee46ffef608e..743ad7a400d6 100644
+--- a/arch/powerpc/include/asm/elf.h
++++ b/arch/powerpc/include/asm/elf.h
+@@ -23,12 +23,13 @@
+ #define CORE_DUMP_USE_REGSET
+ #define ELF_EXEC_PAGESIZE PAGE_SIZE
+
+-/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
+- use of this is to invoke "./ld.so someprog" to test out a new version of
+- the loader. We need to make sure that it is out of the way of the program
+- that it will "exec", and that there is sufficient room for the brk. */
+-
+-#define ELF_ET_DYN_BASE 0x20000000
++/*
++ * This is the base location for PIE (ET_DYN with INTERP) loads. On
++ * 64-bit, this is raised to 4GB to leave the entire 32-bit address
++ * space open for things that want to use the area for 32-bit pointers.
++ */
++#define ELF_ET_DYN_BASE (is_32bit_task() ? 0x000400000UL : \
++ 0x100000000UL)
+
+ #define ELF_CORE_EFLAGS (is_elf2_task() ? 2 : 0)
+
+diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
+index b264937bba68..9340d05bcdc9 100644
+--- a/arch/powerpc/kernel/eeh.c
++++ b/arch/powerpc/kernel/eeh.c
+@@ -306,9 +306,17 @@ void eeh_slot_error_detail(struct eeh_pe *pe, int severity)
+ *
+ * For pHyp, we have to enable IO for log retrieval. Otherwise,
+ * 0xFF's is always returned from PCI config space.
++ *
++ * When the @severity is EEH_LOG_PERM, the PE is going to be
++ * removed. Prior to that, the drivers for devices included in
++ * the PE will be closed. The drivers rely on working IO path
++ * to bring the devices to quiet state. Otherwise, PCI traffic
++ * from those devices after they are removed is like to cause
++ * another unexpected EEH error.
+ */
+ if (!(pe->type & EEH_PE_PHB)) {
+- if (eeh_has_flag(EEH_ENABLE_IO_FOR_LOG))
++ if (eeh_has_flag(EEH_ENABLE_IO_FOR_LOG) ||
++ severity == EEH_LOG_PERM)
+ eeh_pci_enable(pe, EEH_OPT_THAW_MMIO);
+
+ /*
+diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
+index 0a4f23a070ab..ffca0bf5b8b4 100644
+--- a/arch/powerpc/kernel/eeh_driver.c
++++ b/arch/powerpc/kernel/eeh_driver.c
+@@ -651,7 +651,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
+ */
+ #define MAX_WAIT_FOR_RECOVERY 300
+
+-static void eeh_handle_normal_event(struct eeh_pe *pe)
++static bool eeh_handle_normal_event(struct eeh_pe *pe)
+ {
+ struct pci_bus *frozen_bus;
+ int rc = 0;
+@@ -661,7 +661,7 @@ static void eeh_handle_normal_event(struct eeh_pe *pe)
+ if (!frozen_bus) {
+ pr_err("%s: Cannot find PCI bus for PHB#%d-PE#%x\n",
+ __func__, pe->phb->global_number, pe->addr);
+- return;
++ return false;
+ }
+
+ eeh_pe_update_time_stamp(pe);
+@@ -778,7 +778,7 @@ static void eeh_handle_normal_event(struct eeh_pe *pe)
+ pr_info("EEH: Notify device driver to resume\n");
+ eeh_pe_dev_traverse(pe, eeh_report_resume, NULL);
+
+- return;
++ return false;
+
+ excess_failures:
+ /*
+@@ -819,7 +819,11 @@ perm_error:
+ pci_lock_rescan_remove();
+ pcibios_remove_pci_devices(frozen_bus);
+ pci_unlock_rescan_remove();
++
++ /* The passed PE should no longer be used */
++ return true;
+ }
++ return false;
+ }
+
+ static void eeh_handle_special_event(void)
+@@ -885,7 +889,14 @@ static void eeh_handle_special_event(void)
+ */
+ if (rc == EEH_NEXT_ERR_FROZEN_PE ||
+ rc == EEH_NEXT_ERR_FENCED_PHB) {
+- eeh_handle_normal_event(pe);
++ /*
++ * eeh_handle_normal_event() can make the PE stale if it
++ * determines that the PE cannot possibly be recovered.
++ * Don't modify the PE state if that's the case.
++ */
++ if (eeh_handle_normal_event(pe))
++ continue;
++
+ eeh_pe_state_clear(pe, EEH_PE_RECOVERING);
+ } else {
+ pci_lock_rescan_remove();
+diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
+index 7c053f281406..1138fec3dd65 100644
+--- a/arch/powerpc/kernel/kprobes.c
++++ b/arch/powerpc/kernel/kprobes.c
+@@ -514,6 +514,15 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
+ #endif
+ #endif
+
++ /*
++ * jprobes use jprobe_return() which skips the normal return
++ * path of the function, and this messes up the accounting of the
++ * function graph tracer.
++ *
++ * Pause function graph tracing while performing the jprobe function.
++ */
++ pause_graph_tracing();
++
+ return 1;
+ }
+
+@@ -536,6 +545,8 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
+ * saved regs...
+ */
+ memcpy(regs, &kcb->jprobe_saved_regs, sizeof(struct pt_regs));
++ /* It's OK to start function graph tracing again */
++ unpause_graph_tracing();
+ preempt_enable_no_resched();
+ return 1;
+ }
+diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
+index 63c37fd2b7a6..c1e10ffadd17 100644
+--- a/arch/powerpc/kvm/book3s_hv.c
++++ b/arch/powerpc/kvm/book3s_hv.c
+@@ -2238,6 +2238,27 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
+ return -EINVAL;
+ }
+
++ /*
++ * Don't allow entry with a suspended transaction, because
++ * the guest entry/exit code will lose it.
++ * If the guest has TM enabled, save away their TM-related SPRs
++ * (they will get restored by the TM unavailable interrupt).
++ */
++#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
++ if (cpu_has_feature(CPU_FTR_TM) && current->thread.regs &&
++ (current->thread.regs->msr & MSR_TM)) {
++ if (MSR_TM_ACTIVE(current->thread.regs->msr)) {
++ run->exit_reason = KVM_EXIT_FAIL_ENTRY;
++ run->fail_entry.hardware_entry_failure_reason = 0;
++ return -EINVAL;
++ }
++ current->thread.tm_tfhar = mfspr(SPRN_TFHAR);
++ current->thread.tm_tfiar = mfspr(SPRN_TFIAR);
++ current->thread.tm_texasr = mfspr(SPRN_TEXASR);
++ current->thread.regs->msr &= ~MSR_TM;
++ }
++#endif
++
+ kvmppc_core_prepare_to_enter(vcpu);
+
+ /* No need to go into the guest when all we'll do is come back out */
+diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h
+index d7697ab802f6..8e136b88cdf4 100644
+--- a/arch/s390/include/asm/ctl_reg.h
++++ b/arch/s390/include/asm/ctl_reg.h
+@@ -15,7 +15,9 @@
+ BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
+ asm volatile( \
+ " lctlg %1,%2,%0\n" \
+- : : "Q" (*(addrtype *)(&array)), "i" (low), "i" (high));\
++ : \
++ : "Q" (*(addrtype *)(&array)), "i" (low), "i" (high) \
++ : "memory"); \
+ }
+
+ #define __ctl_store(array, low, high) { \
+diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
+index 3ad48f22de78..f133ce08b270 100644
+--- a/arch/s390/include/asm/elf.h
++++ b/arch/s390/include/asm/elf.h
+@@ -154,14 +154,13 @@ extern unsigned int vdso_enabled;
+ #define CORE_DUMP_USE_REGSET
+ #define ELF_EXEC_PAGESIZE 4096
+
+-/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
+- use of this is to invoke "./ld.so someprog" to test out a new version of
+- the loader. We need to make sure that it is out of the way of the program
+- that it will "exec", and that there is sufficient room for the brk. 64-bit
+- tasks are aligned to 4GB. */
+-#define ELF_ET_DYN_BASE (is_32bit_task() ? \
+- (STACK_TOP / 3 * 2) : \
+- (STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))
++/*
++ * This is the base location for PIE (ET_DYN with INTERP) loads. On
++ * 64-bit, this is raised to 4GB to leave the entire 32-bit address
++ * space open for things that want to use the area for 32-bit pointers.
++ */
++#define ELF_ET_DYN_BASE (is_compat_task() ? 0x000400000UL : \
++ 0x100000000UL)
+
+ /* This yields a mask that user programs can use to figure out what
+ instruction set this CPU supports. */
+diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
+index ef7d6c8fea66..f354fd84adeb 100644
+--- a/arch/s390/mm/vmem.c
++++ b/arch/s390/mm/vmem.c
+@@ -372,7 +372,7 @@ void __init vmem_map_init(void)
+ ro_end = (unsigned long)&_eshared & PAGE_MASK;
+ for_each_memblock(memory, reg) {
+ start = reg->base;
+- end = reg->base + reg->size - 1;
++ end = reg->base + reg->size;
+ if (start >= ro_end || end <= ro_start)
+ vmem_add_mem(start, end - start, 0);
+ else if (start >= ro_start && end <= ro_end)
+diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
+index 3b5b7a9c866d..2903ff34174c 100644
+--- a/arch/x86/include/asm/elf.h
++++ b/arch/x86/include/asm/elf.h
+@@ -245,12 +245,13 @@ extern int force_personality32;
+ #define CORE_DUMP_USE_REGSET
+ #define ELF_EXEC_PAGESIZE 4096
+
+-/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
+- use of this is to invoke "./ld.so someprog" to test out a new version of
+- the loader. We need to make sure that it is out of the way of the program
+- that it will "exec", and that there is sufficient room for the brk. */
+-
+-#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
++/*
++ * This is the base location for PIE (ET_DYN with INTERP) loads. On
++ * 64-bit, this is raised to 4GB to leave the entire 32-bit address
++ * space open for things that want to use the area for 32-bit pointers.
++ */
++#define ELF_ET_DYN_BASE (mmap_is_ia32() ? 0x000400000UL : \
++ 0x100000000UL)
+
+ /* This yields a mask that user programs can use to figure out what
+ instruction set this CPU supports. This could be done in user space,
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 99a15e38fa06..32e29f926e5a 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -2118,7 +2118,7 @@ static int nested_vmx_check_exception(struct kvm_vcpu *vcpu, unsigned nr)
+ if (!(vmcs12->exception_bitmap & (1u << nr)))
+ return 0;
+
+- nested_vmx_vmexit(vcpu, to_vmx(vcpu)->exit_reason,
++ nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI,
+ vmcs_read32(VM_EXIT_INTR_INFO),
+ vmcs_readl(EXIT_QUALIFICATION));
+ return 1;
+@@ -6153,7 +6153,6 @@ static __init int hardware_setup(void)
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_CS, false);
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_ESP, false);
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_EIP, false);
+- vmx_disable_intercept_for_msr(MSR_IA32_BNDCFGS, true);
+
+ memcpy(vmx_msr_bitmap_legacy_x2apic,
+ vmx_msr_bitmap_legacy, PAGE_SIZE);
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index c730e4708c7d..9d7ea42482e3 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -4910,6 +4910,8 @@ static bool emulator_get_segment(struct x86_emulate_ctxt *ctxt, u16 *selector,
+
+ if (var.unusable) {
+ memset(desc, 0, sizeof(*desc));
++ if (base3)
++ *base3 = 0;
+ return false;
+ }
+
+@@ -6049,7 +6051,8 @@ static int emulator_fix_hypercall(struct x86_emulate_ctxt *ctxt)
+
+ kvm_x86_ops->patch_hypercall(vcpu, instruction);
+
+- return emulator_write_emulated(ctxt, rip, instruction, 3, NULL);
++ return emulator_write_emulated(ctxt, rip, instruction, 3,
++ &ctxt->exception);
+ }
+
+ /*
+diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S
+index fa997dfaef24..2f1c52e252b0 100644
+--- a/arch/x86/lib/copy_user_64.S
++++ b/arch/x86/lib/copy_user_64.S
+@@ -112,7 +112,7 @@ ENTRY(copy_user_generic_unrolled)
+ movl %edx,%ecx
+ andl $63,%edx
+ shrl $6,%ecx
+- jz 17f
++ jz .L_copy_short_string
+ 1: movq (%rsi),%r8
+ 2: movq 1*8(%rsi),%r9
+ 3: movq 2*8(%rsi),%r10
+@@ -133,7 +133,8 @@ ENTRY(copy_user_generic_unrolled)
+ leaq 64(%rdi),%rdi
+ decl %ecx
+ jnz 1b
+-17: movl %edx,%ecx
++.L_copy_short_string:
++ movl %edx,%ecx
+ andl $7,%edx
+ shrl $3,%ecx
+ jz 20f
+@@ -251,6 +252,8 @@ ENDPROC(copy_user_generic_string)
+ ENTRY(copy_user_enhanced_fast_string)
+ CFI_STARTPROC
+ ASM_STAC
++ cmpl $64,%edx
++ jb .L_copy_short_string /* less then 64 bytes, avoid the costly 'rep' */
+ movl %edx,%ecx
+ 1: rep
+ movsb
+diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c
+index 6a3c774eaff6..c2fea3af515d 100644
+--- a/arch/x86/mm/mpx.c
++++ b/arch/x86/mm/mpx.c
+@@ -312,7 +312,7 @@ siginfo_t *mpx_generate_siginfo(struct pt_regs *regs,
+ * We were not able to extract an address from the instruction,
+ * probably because there was something invalid in it.
+ */
+- if (info->si_addr == (void *)-1) {
++ if (info->si_addr == (void __user *)-1) {
+ err = -EINVAL;
+ goto err_out;
+ }
+diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
+index 0c2fae8d929d..73eb7fd4aec4 100644
+--- a/arch/x86/tools/relocs.c
++++ b/arch/x86/tools/relocs.c
+@@ -992,11 +992,12 @@ static void emit_relocs(int as_text, int use_real_mode)
+ die("Segment relocations found but --realmode not specified\n");
+
+ /* Order the relocations for more efficient processing */
+- sort_relocs(&relocs16);
+ sort_relocs(&relocs32);
+ #if ELF_BITS == 64
+ sort_relocs(&relocs32neg);
+ sort_relocs(&relocs64);
++#else
++ sort_relocs(&relocs16);
+ #endif
+
+ /* Print the relocations */
+diff --git a/drivers/base/core.c b/drivers/base/core.c
+index 21d13038534e..ed29f61d1338 100644
+--- a/drivers/base/core.c
++++ b/drivers/base/core.c
+@@ -1981,7 +1981,11 @@ void device_shutdown(void)
+ pm_runtime_get_noresume(dev);
+ pm_runtime_barrier(dev);
+
+- if (dev->bus && dev->bus->shutdown) {
++ if (dev->class && dev->class->shutdown) {
++ if (initcall_debug)
++ dev_info(dev, "shutdown\n");
++ dev->class->shutdown(dev);
++ } else if (dev->bus && dev->bus->shutdown) {
+ if (initcall_debug)
+ dev_info(dev, "shutdown\n");
+ dev->bus->shutdown(dev);
+diff --git a/drivers/base/platform.c b/drivers/base/platform.c
+index 7403de94832c..29a4ef08e051 100644
+--- a/drivers/base/platform.c
++++ b/drivers/base/platform.c
+@@ -729,7 +729,7 @@ static ssize_t driver_override_store(struct device *dev,
+ const char *buf, size_t count)
+ {
+ struct platform_device *pdev = to_platform_device(dev);
+- char *driver_override, *old = pdev->driver_override, *cp;
++ char *driver_override, *old, *cp;
+
+ if (count > PATH_MAX)
+ return -EINVAL;
+@@ -742,12 +742,15 @@ static ssize_t driver_override_store(struct device *dev,
+ if (cp)
+ *cp = '\0';
+
++ device_lock(dev);
++ old = pdev->driver_override;
+ if (strlen(driver_override)) {
+ pdev->driver_override = driver_override;
+ } else {
+ kfree(driver_override);
+ pdev->driver_override = NULL;
+ }
++ device_unlock(dev);
+
+ kfree(old);
+
+@@ -758,8 +761,12 @@ static ssize_t driver_override_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+ {
+ struct platform_device *pdev = to_platform_device(dev);
++ ssize_t len;
+
+- return sprintf(buf, "%s\n", pdev->driver_override);
++ device_lock(dev);
++ len = sprintf(buf, "%s\n", pdev->driver_override);
++ device_unlock(dev);
++ return len;
+ }
+ static DEVICE_ATTR_RW(driver_override);
+
+diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
+index d2be3f9c211c..dcc09e3e5778 100644
+--- a/drivers/base/power/sysfs.c
++++ b/drivers/base/power/sysfs.c
+@@ -268,6 +268,8 @@ static ssize_t pm_qos_latency_tolerance_store(struct device *dev,
+ value = PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT;
+ else if (!strcmp(buf, "any") || !strcmp(buf, "any\n"))
+ value = PM_QOS_LATENCY_ANY;
++ else
++ return -EINVAL;
+ }
+ ret = dev_pm_qos_update_user_latency_tolerance(dev, value);
+ return ret < 0 ? ret : n;
+diff --git a/drivers/char/random.c b/drivers/char/random.c
+index 9cd6968e2f92..d55156fc064d 100644
+--- a/drivers/char/random.c
++++ b/drivers/char/random.c
+@@ -1714,13 +1714,15 @@ int random_int_secret_init(void)
+ return 0;
+ }
+
++static DEFINE_PER_CPU(__u32 [MD5_DIGEST_WORDS], get_random_int_hash)
++ __aligned(sizeof(unsigned long));
++
+ /*
+ * Get a random word for internal kernel use only. Similar to urandom but
+ * with the goal of minimal entropy pool depletion. As a result, the random
+ * value is not cryptographically secure but for several uses the cost of
+ * depleting entropy is too high
+ */
+-static DEFINE_PER_CPU(__u32 [MD5_DIGEST_WORDS], get_random_int_hash);
+ unsigned int get_random_int(void)
+ {
+ __u32 *hash;
+@@ -1741,6 +1743,28 @@ unsigned int get_random_int(void)
+ EXPORT_SYMBOL(get_random_int);
+
+ /*
++ * Same as get_random_int(), but returns unsigned long.
++ */
++unsigned long get_random_long(void)
++{
++ __u32 *hash;
++ unsigned long ret;
++
++ if (arch_get_random_long(&ret))
++ return ret;
++
++ hash = get_cpu_var(get_random_int_hash);
++
++ hash[0] += current->pid + jiffies + random_get_entropy();
++ md5_transform(hash, random_int_secret);
++ ret = *(unsigned long *)hash;
++ put_cpu_var(get_random_int_hash);
++
++ return ret;
++}
++EXPORT_SYMBOL(get_random_long);
++
++/*
+ * randomize_range() returns a start address such that
+ *
+ * [...... <range> .....]
+diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
+index 810b171b55b7..374b0006aa7a 100644
+--- a/drivers/char/virtio_console.c
++++ b/drivers/char/virtio_console.c
+@@ -1864,7 +1864,7 @@ static void config_work_handler(struct work_struct *work)
+ {
+ struct ports_device *portdev;
+
+- portdev = container_of(work, struct ports_device, control_work);
++ portdev = container_of(work, struct ports_device, config_work);
+ if (!use_multiport(portdev)) {
+ struct virtio_device *vdev;
+ struct port *port;
+diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
+index 25a70d06c5bf..55836a538a68 100644
+--- a/drivers/cpufreq/cpufreq_conservative.c
++++ b/drivers/cpufreq/cpufreq_conservative.c
+@@ -204,8 +204,8 @@ static ssize_t store_down_threshold(struct dbs_data *dbs_data, const char *buf,
+ int ret;
+ ret = sscanf(buf, "%u", &input);
+
+- /* cannot be lower than 11 otherwise freq will not fall */
+- if (ret != 1 || input < 11 || input > 100 ||
++ /* cannot be lower than 1 otherwise freq will not fall */
++ if (ret != 1 || input < 1 || input > 100 ||
+ input >= cs_tuners->up_threshold)
+ return -EINVAL;
+
+diff --git a/drivers/cpufreq/s3c2416-cpufreq.c b/drivers/cpufreq/s3c2416-cpufreq.c
+index d6d425773fa4..5b2db3c6568f 100644
+--- a/drivers/cpufreq/s3c2416-cpufreq.c
++++ b/drivers/cpufreq/s3c2416-cpufreq.c
+@@ -400,7 +400,6 @@ static int s3c2416_cpufreq_driver_init(struct cpufreq_policy *policy)
+ rate = clk_get_rate(s3c_freq->hclk);
+ if (rate < 133 * 1000 * 1000) {
+ pr_err("cpufreq: HCLK not at 133MHz\n");
+- clk_put(s3c_freq->hclk);
+ ret = -EINVAL;
+ goto err_armclk;
+ }
+diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
+index 3178f84d2757..6bff78c5c032 100644
+--- a/drivers/crypto/atmel-sha.c
++++ b/drivers/crypto/atmel-sha.c
+@@ -963,7 +963,9 @@ static int atmel_sha_finup(struct ahash_request *req)
+ ctx->flags |= SHA_FLAGS_FINUP;
+
+ err1 = atmel_sha_update(req);
+- if (err1 == -EINPROGRESS || err1 == -EBUSY)
++ if (err1 == -EINPROGRESS ||
++ (err1 == -EBUSY && (ahash_request_flags(req) &
++ CRYPTO_TFM_REQ_MAY_BACKLOG)))
+ return err1;
+
+ /*
+diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
+index 9742b3d66288..fc6d2d568541 100644
+--- a/drivers/crypto/caam/caamhash.c
++++ b/drivers/crypto/caam/caamhash.c
+@@ -490,7 +490,7 @@ static int hash_digest_key(struct caam_hash_ctx *ctx, const u8 *key_in,
+ ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result);
+ if (!ret) {
+ /* in progress */
+- wait_for_completion_interruptible(&result.completion);
++ wait_for_completion(&result.completion);
+ ret = result.err;
+ #ifdef DEBUG
+ print_hex_dump(KERN_ERR,
+diff --git a/drivers/crypto/caam/key_gen.c b/drivers/crypto/caam/key_gen.c
+index e1eaf4ff9762..3ce1d5cdcbd2 100644
+--- a/drivers/crypto/caam/key_gen.c
++++ b/drivers/crypto/caam/key_gen.c
+@@ -103,7 +103,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out, int split_key_len,
+ ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result);
+ if (!ret) {
+ /* in progress */
+- wait_for_completion_interruptible(&result.completion);
++ wait_for_completion(&result.completion);
+ ret = result.err;
+ #ifdef DEBUG
+ print_hex_dump(KERN_ERR, "ctx.key@"__stringify(__LINE__)": ",
+diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
+index f062158d4dc9..eb79d49ab88c 100644
+--- a/drivers/crypto/talitos.c
++++ b/drivers/crypto/talitos.c
+@@ -634,7 +634,7 @@ static void talitos_unregister_rng(struct device *dev)
+ * crypto alg
+ */
+ #define TALITOS_CRA_PRIORITY 3000
+-#define TALITOS_MAX_KEY_SIZE 96
++#define TALITOS_MAX_KEY_SIZE (AES_MAX_KEY_SIZE + SHA512_BLOCK_SIZE)
+ #define TALITOS_MAX_IV_LENGTH 16 /* max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */
+
+ struct talitos_ctx {
+@@ -1322,6 +1322,11 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *cipher,
+ {
+ struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+
++ if (keylen > TALITOS_MAX_KEY_SIZE) {
++ crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
++ return -EINVAL;
++ }
++
+ memcpy(&ctx->key, key, keylen);
+ ctx->keylen = keylen;
+
+diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c
+index 1638d39af595..023c08708b56 100644
+--- a/drivers/dma/ep93xx_dma.c
++++ b/drivers/dma/ep93xx_dma.c
+@@ -201,7 +201,6 @@ struct ep93xx_dma_engine {
+ struct dma_device dma_dev;
+ bool m2m;
+ int (*hw_setup)(struct ep93xx_dma_chan *);
+- void (*hw_synchronize)(struct ep93xx_dma_chan *);
+ void (*hw_shutdown)(struct ep93xx_dma_chan *);
+ void (*hw_submit)(struct ep93xx_dma_chan *);
+ int (*hw_interrupt)(struct ep93xx_dma_chan *);
+@@ -336,27 +335,21 @@ static inline u32 m2p_channel_state(struct ep93xx_dma_chan *edmac)
+ return (readl(edmac->regs + M2P_STATUS) >> 4) & 0x3;
+ }
+
+-static void m2p_hw_synchronize(struct ep93xx_dma_chan *edmac)
++static void m2p_hw_shutdown(struct ep93xx_dma_chan *edmac)
+ {
+- unsigned long flags;
+ u32 control;
+
+- spin_lock_irqsave(&edmac->lock, flags);
+ control = readl(edmac->regs + M2P_CONTROL);
+ control &= ~(M2P_CONTROL_STALLINT | M2P_CONTROL_NFBINT);
+ m2p_set_control(edmac, control);
+- spin_unlock_irqrestore(&edmac->lock, flags);
+
+ while (m2p_channel_state(edmac) >= M2P_STATE_ON)
+- schedule();
+-}
++ cpu_relax();
+
+-static void m2p_hw_shutdown(struct ep93xx_dma_chan *edmac)
+-{
+ m2p_set_control(edmac, 0);
+
+- while (m2p_channel_state(edmac) != M2P_STATE_IDLE)
+- dev_warn(chan2dev(edmac), "M2P: Not yet IDLE\n");
++ while (m2p_channel_state(edmac) == M2P_STATE_STALL)
++ cpu_relax();
+ }
+
+ static void m2p_fill_desc(struct ep93xx_dma_chan *edmac)
+@@ -1172,26 +1165,6 @@ fail:
+ }
+
+ /**
+- * ep93xx_dma_synchronize - Synchronizes the termination of transfers to the
+- * current context.
+- * @chan: channel
+- *
+- * Synchronizes the DMA channel termination to the current context. When this
+- * function returns it is guaranteed that all transfers for previously issued
+- * descriptors have stopped and and it is safe to free the memory associated
+- * with them. Furthermore it is guaranteed that all complete callback functions
+- * for a previously submitted descriptor have finished running and it is safe to
+- * free resources accessed from within the complete callbacks.
+- */
+-static void ep93xx_dma_synchronize(struct dma_chan *chan)
+-{
+- struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan);
+-
+- if (edmac->edma->hw_synchronize)
+- edmac->edma->hw_synchronize(edmac);
+-}
+-
+-/**
+ * ep93xx_dma_terminate_all - terminate all transactions
+ * @chan: channel
+ *
+@@ -1354,7 +1327,6 @@ static int __init ep93xx_dma_probe(struct platform_device *pdev)
+ dma_dev->device_prep_slave_sg = ep93xx_dma_prep_slave_sg;
+ dma_dev->device_prep_dma_cyclic = ep93xx_dma_prep_dma_cyclic;
+ dma_dev->device_config = ep93xx_dma_slave_config;
+- dma_dev->device_synchronize = ep93xx_dma_synchronize;
+ dma_dev->device_terminate_all = ep93xx_dma_terminate_all;
+ dma_dev->device_issue_pending = ep93xx_dma_issue_pending;
+ dma_dev->device_tx_status = ep93xx_dma_tx_status;
+@@ -1372,7 +1344,6 @@ static int __init ep93xx_dma_probe(struct platform_device *pdev)
+ } else {
+ dma_cap_set(DMA_PRIVATE, dma_dev->cap_mask);
+
+- edma->hw_synchronize = m2p_hw_synchronize;
+ edma->hw_setup = m2p_hw_setup;
+ edma->hw_shutdown = m2p_hw_shutdown;
+ edma->hw_submit = m2p_hw_submit;
+diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
+index d33ea7ff8614..20e26b3a5a3d 100644
+--- a/drivers/gpu/drm/ast/ast_drv.h
++++ b/drivers/gpu/drm/ast/ast_drv.h
+@@ -113,7 +113,11 @@ struct ast_private {
+ struct ttm_bo_kmap_obj cache_kmap;
+ int next_cursor;
+ bool support_wide_screen;
+- bool DisableP2A;
++ enum {
++ ast_use_p2a,
++ ast_use_dt,
++ ast_use_defaults
++ } config_mode;
+
+ enum ast_tx_chip tx_chip_type;
+ u8 dp501_maxclk;
+diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
+index dacfe512a93f..fd9a738ff882 100644
+--- a/drivers/gpu/drm/ast/ast_main.c
++++ b/drivers/gpu/drm/ast/ast_main.c
+@@ -62,13 +62,84 @@ uint8_t ast_get_index_reg_mask(struct ast_private *ast,
+ return ret;
+ }
+
++static void ast_detect_config_mode(struct drm_device *dev, u32 *scu_rev)
++{
++ struct device_node *np = dev->pdev->dev.of_node;
++ struct ast_private *ast = dev->dev_private;
++ uint32_t data, jregd0, jregd1;
++
++ /* Defaults */
++ ast->config_mode = ast_use_defaults;
++ *scu_rev = 0xffffffff;
++
++ /* Check if we have device-tree properties */
++ if (np && !of_property_read_u32(np, "aspeed,scu-revision-id",
++ scu_rev)) {
++ /* We do, disable P2A access */
++ ast->config_mode = ast_use_dt;
++ DRM_INFO("Using device-tree for configuration\n");
++ return;
++ }
++
++ /* Not all families have a P2A bridge */
++ if (dev->pdev->device != PCI_CHIP_AST2000)
++ return;
++
++ /*
++ * The BMC will set SCU 0x40 D[12] to 1 if the P2 bridge
++ * is disabled. We force using P2A if VGA only mode bit
++ * is set D[7]
++ */
++ jregd0 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
++ jregd1 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
++ if (!(jregd0 & 0x80) || !(jregd1 & 0x10)) {
++ /* Double check it's actually working */
++ data = ast_read32(ast, 0xf004);
++ if (data != 0xFFFFFFFF) {
++ /* P2A works, grab silicon revision */
++ ast->config_mode = ast_use_p2a;
++
++ DRM_INFO("Using P2A bridge for configuration\n");
++
++ /* Read SCU7c (silicon revision register) */
++ ast_write32(ast, 0xf004, 0x1e6e0000);
++ ast_write32(ast, 0xf000, 0x1);
++ *scu_rev = ast_read32(ast, 0x1207c);
++ return;
++ }
++ }
++
++ /* We have a P2A bridge but it's disabled */
++ DRM_INFO("P2A bridge disabled, using default configuration\n");
++}
+
+ static int ast_detect_chip(struct drm_device *dev, bool *need_post)
+ {
+ struct ast_private *ast = dev->dev_private;
+- uint32_t data, jreg;
++ uint32_t jreg, scu_rev;
++
++ /*
++ * If VGA isn't enabled, we need to enable now or subsequent
++ * access to the scratch registers will fail. We also inform
++ * our caller that it needs to POST the chip
++ * (Assumption: VGA not enabled -> need to POST)
++ */
++ if (!ast_is_vga_enabled(dev)) {
++ ast_enable_vga(dev);
++ DRM_INFO("VGA not enabled on entry, requesting chip POST\n");
++ *need_post = true;
++ } else
++ *need_post = false;
++
++
++ /* Enable extended register access */
++ ast_enable_mmio(dev);
+ ast_open_key(ast);
+
++ /* Find out whether P2A works or whether to use device-tree */
++ ast_detect_config_mode(dev, &scu_rev);
++
++ /* Identify chipset */
+ if (dev->pdev->device == PCI_CHIP_AST1180) {
+ ast->chip = AST1100;
+ DRM_INFO("AST 1180 detected\n");
+@@ -80,12 +151,7 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post)
+ ast->chip = AST2300;
+ DRM_INFO("AST 2300 detected\n");
+ } else if (dev->pdev->revision >= 0x10) {
+- uint32_t data;
+- ast_write32(ast, 0xf004, 0x1e6e0000);
+- ast_write32(ast, 0xf000, 0x1);
+-
+- data = ast_read32(ast, 0x1207c);
+- switch (data & 0x0300) {
++ switch (scu_rev & 0x0300) {
+ case 0x0200:
+ ast->chip = AST1100;
+ DRM_INFO("AST 1100 detected\n");
+@@ -110,26 +176,6 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post)
+ }
+ }
+
+- /*
+- * If VGA isn't enabled, we need to enable now or subsequent
+- * access to the scratch registers will fail. We also inform
+- * our caller that it needs to POST the chip
+- * (Assumption: VGA not enabled -> need to POST)
+- */
+- if (!ast_is_vga_enabled(dev)) {
+- ast_enable_vga(dev);
+- ast_enable_mmio(dev);
+- DRM_INFO("VGA not enabled on entry, requesting chip POST\n");
+- *need_post = true;
+- } else
+- *need_post = false;
+-
+- /* Check P2A Access */
+- ast->DisableP2A = true;
+- data = ast_read32(ast, 0xf004);
+- if (data != 0xFFFFFFFF)
+- ast->DisableP2A = false;
+-
+ /* Check if we support wide screen */
+ switch (ast->chip) {
+ case AST1180:
+@@ -146,17 +192,12 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post)
+ ast->support_wide_screen = true;
+ else {
+ ast->support_wide_screen = false;
+- if (ast->DisableP2A == false) {
+- /* Read SCU7c (silicon revision register) */
+- ast_write32(ast, 0xf004, 0x1e6e0000);
+- ast_write32(ast, 0xf000, 0x1);
+- data = ast_read32(ast, 0x1207c);
+- data &= 0x300;
+- if (ast->chip == AST2300 && data == 0x0) /* ast1300 */
+- ast->support_wide_screen = true;
+- if (ast->chip == AST2400 && data == 0x100) /* ast1400 */
+- ast->support_wide_screen = true;
+- }
++ if (ast->chip == AST2300 &&
++ (scu_rev & 0x300) == 0x0) /* ast1300 */
++ ast->support_wide_screen = true;
++ if (ast->chip == AST2400 &&
++ (scu_rev & 0x300) == 0x100) /* ast1400 */
++ ast->support_wide_screen = true;
+ }
+ break;
+ }
+@@ -220,85 +261,102 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post)
+
+ static int ast_get_dram_info(struct drm_device *dev)
+ {
++ struct device_node *np = dev->pdev->dev.of_node;
+ struct ast_private *ast = dev->dev_private;
+- uint32_t data, data2;
+- uint32_t denum, num, div, ref_pll;
++ uint32_t mcr_cfg, mcr_scu_mpll, mcr_scu_strap;
++ uint32_t denum, num, div, ref_pll, dsel;
+
+- if (ast->DisableP2A)
+- {
++ switch (ast->config_mode) {
++ case ast_use_dt:
++ /*
++ * If some properties are missing, use reasonable
++ * defaults for AST2400
++ */
++ if (of_property_read_u32(np, "aspeed,mcr-configuration",
++ &mcr_cfg))
++ mcr_cfg = 0x00000577;
++ if (of_property_read_u32(np, "aspeed,mcr-scu-mpll",
++ &mcr_scu_mpll))
++ mcr_scu_mpll = 0x000050C0;
++ if (of_property_read_u32(np, "aspeed,mcr-scu-strap",
++ &mcr_scu_strap))
++ mcr_scu_strap = 0;
++ break;
++ case ast_use_p2a:
++ ast_write32(ast, 0xf004, 0x1e6e0000);
++ ast_write32(ast, 0xf000, 0x1);
++ mcr_cfg = ast_read32(ast, 0x10004);
++ mcr_scu_mpll = ast_read32(ast, 0x10120);
++ mcr_scu_strap = ast_read32(ast, 0x10170);
++ break;
++ case ast_use_defaults:
++ default:
+ ast->dram_bus_width = 16;
+ ast->dram_type = AST_DRAM_1Gx16;
+ ast->mclk = 396;
++ return 0;
+ }
+- else
+- {
+- ast_write32(ast, 0xf004, 0x1e6e0000);
+- ast_write32(ast, 0xf000, 0x1);
+- data = ast_read32(ast, 0x10004);
+-
+- if (data & 0x40)
+- ast->dram_bus_width = 16;
+- else
+- ast->dram_bus_width = 32;
+
+- if (ast->chip == AST2300 || ast->chip == AST2400) {
+- switch (data & 0x03) {
+- case 0:
+- ast->dram_type = AST_DRAM_512Mx16;
+- break;
+- default:
+- case 1:
+- ast->dram_type = AST_DRAM_1Gx16;
+- break;
+- case 2:
+- ast->dram_type = AST_DRAM_2Gx16;
+- break;
+- case 3:
+- ast->dram_type = AST_DRAM_4Gx16;
+- break;
+- }
+- } else {
+- switch (data & 0x0c) {
+- case 0:
+- case 4:
+- ast->dram_type = AST_DRAM_512Mx16;
+- break;
+- case 8:
+- if (data & 0x40)
+- ast->dram_type = AST_DRAM_1Gx16;
+- else
+- ast->dram_type = AST_DRAM_512Mx32;
+- break;
+- case 0xc:
+- ast->dram_type = AST_DRAM_1Gx32;
+- break;
+- }
+- }
++ if (mcr_cfg & 0x40)
++ ast->dram_bus_width = 16;
++ else
++ ast->dram_bus_width = 32;
+
+- data = ast_read32(ast, 0x10120);
+- data2 = ast_read32(ast, 0x10170);
+- if (data2 & 0x2000)
+- ref_pll = 14318;
+- else
+- ref_pll = 12000;
+-
+- denum = data & 0x1f;
+- num = (data & 0x3fe0) >> 5;
+- data = (data & 0xc000) >> 14;
+- switch (data) {
+- case 3:
+- div = 0x4;
++ if (ast->chip == AST2300 || ast->chip == AST2400) {
++ switch (mcr_cfg & 0x03) {
++ case 0:
++ ast->dram_type = AST_DRAM_512Mx16;
+ break;
+- case 2:
++ default:
+ case 1:
+- div = 0x2;
++ ast->dram_type = AST_DRAM_1Gx16;
+ break;
+- default:
+- div = 0x1;
++ case 2:
++ ast->dram_type = AST_DRAM_2Gx16;
++ break;
++ case 3:
++ ast->dram_type = AST_DRAM_4Gx16;
++ break;
++ }
++ } else {
++ switch (mcr_cfg & 0x0c) {
++ case 0:
++ case 4:
++ ast->dram_type = AST_DRAM_512Mx16;
++ break;
++ case 8:
++ if (mcr_cfg & 0x40)
++ ast->dram_type = AST_DRAM_1Gx16;
++ else
++ ast->dram_type = AST_DRAM_512Mx32;
++ break;
++ case 0xc:
++ ast->dram_type = AST_DRAM_1Gx32;
+ break;
+ }
+- ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
+ }
++
++ if (mcr_scu_strap & 0x2000)
++ ref_pll = 14318;
++ else
++ ref_pll = 12000;
++
++ denum = mcr_scu_mpll & 0x1f;
++ num = (mcr_scu_mpll & 0x3fe0) >> 5;
++ dsel = (mcr_scu_mpll & 0xc000) >> 14;
++ switch (dsel) {
++ case 3:
++ div = 0x4;
++ break;
++ case 2:
++ case 1:
++ div = 0x2;
++ break;
++ default:
++ div = 0x1;
++ break;
++ }
++ ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
+ return 0;
+ }
+
+diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
+index 270e8fb2803f..c7c58becb25d 100644
+--- a/drivers/gpu/drm/ast/ast_post.c
++++ b/drivers/gpu/drm/ast/ast_post.c
+@@ -375,17 +375,14 @@ void ast_post_gpu(struct drm_device *dev)
+ ast_enable_mmio(dev);
+ ast_set_def_ext_reg(dev);
+
+- if (ast->DisableP2A == false)
+- {
++ if (ast->config_mode == ast_use_p2a) {
+ if (ast->chip == AST2300 || ast->chip == AST2400)
+ ast_init_dram_2300(dev);
+ else
+ ast_init_dram_reg(dev);
+
+ ast_init_3rdtx(dev);
+- }
+- else
+- {
++ } else {
+ if (ast->tx_chip_type != AST_TX_NONE)
+ ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xcf, 0x80); /* Enable DVO */
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
+index a9b01bcf7d0a..fcecaf5b5526 100644
+--- a/drivers/gpu/drm/radeon/radeon_combios.c
++++ b/drivers/gpu/drm/radeon/radeon_combios.c
+@@ -3394,6 +3394,13 @@ void radeon_combios_asic_init(struct drm_device *dev)
+ rdev->pdev->subsystem_vendor == 0x103c &&
+ rdev->pdev->subsystem_device == 0x280a)
+ return;
++ /* quirk for rs4xx Toshiba Sattellite L20-183 latop to make it resume
++ * - it hangs on resume inside the dynclk 1 table.
++ */
++ if (rdev->family == CHIP_RS400 &&
++ rdev->pdev->subsystem_vendor == 0x1179 &&
++ rdev->pdev->subsystem_device == 0xff31)
++ return;
+
+ /* DYN CLK 1 */
+ table = combios_get_table_offset(dev, COMBIOS_DYN_CLK_1_TABLE);
+diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
+index 83b3eb2e444a..3c74c60fb8ea 100644
+--- a/drivers/gpu/drm/radeon/radeon_device.c
++++ b/drivers/gpu/drm/radeon/radeon_device.c
+@@ -127,6 +127,10 @@ static struct radeon_px_quirk radeon_px_quirk_list[] = {
+ * https://bugzilla.kernel.org/show_bug.cgi?id=51381
+ */
+ { PCI_VENDOR_ID_ATI, 0x6840, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
++ /* Asus K53TK laptop with AMD A6-3420M APU and Radeon 7670m GPU
++ * https://bugs.freedesktop.org/show_bug.cgi?id=101491
++ */
++ { PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
+ /* macbook pro 8.2 */
+ { PCI_VENDOR_ID_ATI, 0x6741, PCI_VENDOR_ID_APPLE, 0x00e2, RADEON_PX_QUIRK_LONG_WAKEUP },
+ { 0, 0, 0, 0, 0 },
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
+index 21e9b7f8dad0..c3b8ebac18c2 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
+@@ -317,6 +317,7 @@ void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man)
+ list_for_each_entry_safe(entry, next, &man->list, head)
+ vmw_cmdbuf_res_free(man, entry);
+
++ drm_ht_remove(&man->resources);
+ kfree(man);
+ }
+
+diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
+index bf039dbaa7eb..07a963039b60 100644
+--- a/drivers/hid/hid-core.c
++++ b/drivers/hid/hid-core.c
+@@ -1228,6 +1228,7 @@ static void hid_input_field(struct hid_device *hid, struct hid_field *field,
+ /* Ignore report if ErrorRollOver */
+ if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
+ value[n] >= min && value[n] <= max &&
++ value[n] - min < field->maxusage &&
+ field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
+ goto exit;
+ }
+@@ -1240,11 +1241,13 @@ static void hid_input_field(struct hid_device *hid, struct hid_field *field,
+ }
+
+ if (field->value[n] >= min && field->value[n] <= max
++ && field->value[n] - min < field->maxusage
+ && field->usage[field->value[n] - min].hid
+ && search(value, field->value[n], count))
+ hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
+
+ if (value[n] >= min && value[n] <= max
++ && value[n] - min < field->maxusage
+ && field->usage[value[n] - min].hid
+ && search(field->value, value[n], count))
+ hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
+diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
+index c4c9d9523694..1ec738292a1a 100644
+--- a/drivers/hid/i2c-hid/i2c-hid.c
++++ b/drivers/hid/i2c-hid/i2c-hid.c
+@@ -362,6 +362,15 @@ static int i2c_hid_hwreset(struct i2c_client *client)
+ if (ret)
+ return ret;
+
++ /*
++ * The HID over I2C specification states that if a DEVICE needs time
++ * after the PWR_ON request, it should utilise CLOCK stretching.
++ * However, it has been observered that the Windows driver provides a
++ * 1ms sleep between the PWR_ON and RESET requests and that some devices
++ * rely on this.
++ */
++ usleep_range(1000, 5000);
++
+ i2c_hid_dbg(ihid, "resetting...\n");
+
+ ret = i2c_hid_command(client, &hid_reset_cmd, NULL, 0);
+diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
+index 785570272505..1f40cdc1b357 100644
+--- a/drivers/input/serio/i8042-x86ia64io.h
++++ b/drivers/input/serio/i8042-x86ia64io.h
+@@ -698,6 +698,13 @@ static const struct dmi_system_id __initconst i8042_dmi_notimeout_table[] = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U574"),
+ },
+ },
++ {
++ /* Fujitsu UH554 laptop */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
++ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK UH544"),
++ },
++ },
+ { }
+ };
+
+diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
+index 45087c3e5c57..d29c499375cb 100644
+--- a/drivers/iommu/amd_iommu_v2.c
++++ b/drivers/iommu/amd_iommu_v2.c
+@@ -675,9 +675,9 @@ out_clear_state:
+
+ out_unregister:
+ mmu_notifier_unregister(&pasid_state->mn, mm);
++ mmput(mm);
+
+ out_free:
+- mmput(mm);
+ free_pasid_state(pasid_state);
+
+ out:
+diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
+index b85a8614c128..275f59071f56 100644
+--- a/drivers/iommu/intel-iommu.c
++++ b/drivers/iommu/intel-iommu.c
+@@ -965,7 +965,7 @@ static void dma_pte_free_level(struct dmar_domain *domain, int level,
+ if (!dma_pte_present(pte) || dma_pte_superpage(pte))
+ goto next;
+
+- level_pfn = pfn & level_mask(level - 1);
++ level_pfn = pfn & level_mask(level);
+ level_pte = phys_to_virt(dma_pte_addr(pte));
+
+ if (level > 2)
+diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
+index f1b15a0b3774..9976c37b9c64 100644
+--- a/drivers/irqchip/irq-gic-v3.c
++++ b/drivers/irqchip/irq-gic-v3.c
+@@ -612,6 +612,9 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
+ int enabled;
+ u64 val;
+
++ if (cpu >= nr_cpu_ids)
++ return -EINVAL;
++
+ if (gic_irq_in_rdist(d))
+ return -EINVAL;
+
+diff --git a/drivers/md/md.c b/drivers/md/md.c
+index 7453c3ed4b8f..1fdcd5735418 100644
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -1852,7 +1852,7 @@ super_1_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors)
+ }
+ sb = page_address(rdev->sb_page);
+ sb->data_size = cpu_to_le64(num_sectors);
+- sb->super_offset = rdev->sb_start;
++ sb->super_offset = cpu_to_le64(rdev->sb_start);
+ sb->sb_csum = calc_sb_1_csum(sb);
+ md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size,
+ rdev->sb_page);
+diff --git a/drivers/media/pci/saa7134/saa7134-i2c.c b/drivers/media/pci/saa7134/saa7134-i2c.c
+index f4da674e7f26..ae651007ee0f 100644
+--- a/drivers/media/pci/saa7134/saa7134-i2c.c
++++ b/drivers/media/pci/saa7134/saa7134-i2c.c
+@@ -350,12 +350,43 @@ static struct i2c_client saa7134_client_template = {
+
+ /* ----------------------------------------------------------- */
+
++/* On Medion 7134 reading EEPROM needs DVB-T demod i2c gate open */
++static void saa7134_i2c_eeprom_md7134_gate(struct saa7134_dev *dev)
++{
++ u8 subaddr = 0x7, dmdregval;
++ u8 data[2];
++ int ret;
++ struct i2c_msg i2cgatemsg_r[] = { {.addr = 0x08, .flags = 0,
++ .buf = &subaddr, .len = 1},
++ {.addr = 0x08,
++ .flags = I2C_M_RD,
++ .buf = &dmdregval, .len = 1}
++ };
++ struct i2c_msg i2cgatemsg_w[] = { {.addr = 0x08, .flags = 0,
++ .buf = data, .len = 2} };
++
++ ret = i2c_transfer(&dev->i2c_adap, i2cgatemsg_r, 2);
++ if ((ret == 2) && (dmdregval & 0x2)) {
++ pr_debug("%s: DVB-T demod i2c gate was left closed\n",
++ dev->name);
++
++ data[0] = subaddr;
++ data[1] = (dmdregval & ~0x2);
++ if (i2c_transfer(&dev->i2c_adap, i2cgatemsg_w, 1) != 1)
++ pr_err("%s: EEPROM i2c gate open failure\n",
++ dev->name);
++ }
++}
++
+ static int
+ saa7134_i2c_eeprom(struct saa7134_dev *dev, unsigned char *eedata, int len)
+ {
+ unsigned char buf;
+ int i,err;
+
++ if (dev->board == SAA7134_BOARD_MD7134)
++ saa7134_i2c_eeprom_md7134_gate(dev);
++
+ dev->i2c_client.addr = 0xa0 >> 1;
+ buf = 0;
+ if (1 != (err = i2c_master_send(&dev->i2c_client,&buf,1))) {
+diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c
+index 5abab8800891..9190057535e6 100644
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -66,11 +66,13 @@ static const char *bcm47xxpart_trx_data_part_name(struct mtd_info *master,
+ {
+ uint32_t buf;
+ size_t bytes_read;
++ int err;
+
+- if (mtd_read(master, offset, sizeof(buf), &bytes_read,
+- (uint8_t *)&buf) < 0) {
+- pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
+- offset);
++ err = mtd_read(master, offset, sizeof(buf), &bytes_read,
++ (uint8_t *)&buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ goto out_default;
+ }
+
+@@ -95,6 +97,7 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ int trx_part = -1;
+ int last_trx_part = -1;
+ int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
++ int err;
+
+ /*
+ * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
+@@ -118,8 +121,8 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ /* Parse block by block looking for magics */
+ for (offset = 0; offset <= master->size - blocksize;
+ offset += blocksize) {
+- /* Nothing more in higher memory */
+- if (offset >= 0x2000000)
++ /* Nothing more in higher memory on BCM47XX (MIPS) */
++ if (config_enabled(CONFIG_BCM47XX) && offset >= 0x2000000)
+ break;
+
+ if (curr_part >= BCM47XXPART_MAX_PARTS) {
+@@ -128,10 +131,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ /* Read beginning of the block */
+- if (mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
+- &bytes_read, (uint8_t *)buf) < 0) {
+- pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
+- offset);
++ err = mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
++ &bytes_read, (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+@@ -252,10 +256,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ /* Read middle of the block */
+- if (mtd_read(master, offset + 0x8000, 0x4,
+- &bytes_read, (uint8_t *)buf) < 0) {
+- pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
+- offset);
++ err = mtd_read(master, offset + 0x8000, 0x4, &bytes_read,
++ (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+@@ -275,10 +280,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ offset = master->size - possible_nvram_sizes[i];
+- if (mtd_read(master, offset, 0x4, &bytes_read,
+- (uint8_t *)buf) < 0) {
+- pr_err("mtd_read error while reading at offset 0x%X!\n",
+- offset);
++ err = mtd_read(master, offset, 0x4, &bytes_read,
++ (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while reading (offset 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
+index 14a5d2325dac..ac2d68d6d446 100644
+--- a/drivers/mtd/spi-nor/spi-nor.c
++++ b/drivers/mtd/spi-nor/spi-nor.c
+@@ -900,6 +900,13 @@ static int spansion_quad_enable(struct spi_nor *nor)
+ return -EINVAL;
+ }
+
++ ret = spi_nor_wait_till_ready(nor);
++ if (ret) {
++ dev_err(nor->dev,
++ "timeout while writing configuration register\n");
++ return ret;
++ }
++
+ /* read back and check it */
+ ret = read_cr(nor);
+ if (!(ret > 0 && (ret & CR_QUAD_EN_SPAN))) {
+diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+index 21d9497518fd..8b3c60b1f486 100644
+--- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
++++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+@@ -2779,8 +2779,10 @@ static int xgbe_init(struct xgbe_prv_data *pdata)
+
+ /* Flush Tx queues */
+ ret = xgbe_flush_tx_queues(pdata);
+- if (ret)
++ if (ret) {
++ netdev_err(pdata->netdev, "error flushing TX queues\n");
+ return ret;
++ }
+
+ /*
+ * Initialize DMA related features
+diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+index 9fd6c69a8bac..eea5b58496a3 100644
+--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
++++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+@@ -951,7 +951,9 @@ static int xgbe_start(struct xgbe_prv_data *pdata)
+
+ DBGPR("-->xgbe_start\n");
+
+- hw_if->init(pdata);
++ ret = hw_if->init(pdata);
++ if (ret)
++ return ret;
+
+ phy_start(pdata->phydev);
+
+diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
+index 21e3c38c7c75..6f0aad85c524 100644
+--- a/drivers/net/ethernet/broadcom/bgmac.c
++++ b/drivers/net/ethernet/broadcom/bgmac.c
+@@ -255,15 +255,16 @@ static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
+ while (ring->start != ring->end) {
+ int slot_idx = ring->start % BGMAC_TX_RING_SLOTS;
+ struct bgmac_slot_info *slot = &ring->slots[slot_idx];
+- u32 ctl1;
++ u32 ctl0, ctl1;
+ int len;
+
+ if (slot_idx == empty_slot)
+ break;
+
++ ctl0 = le32_to_cpu(ring->cpu_base[slot_idx].ctl0);
+ ctl1 = le32_to_cpu(ring->cpu_base[slot_idx].ctl1);
+ len = ctl1 & BGMAC_DESC_CTL1_LEN;
+- if (ctl1 & BGMAC_DESC_CTL0_SOF)
++ if (ctl0 & BGMAC_DESC_CTL0_SOF)
+ /* Unmap no longer used buffer */
+ dma_unmap_single(dma_dev, slot->dma_addr, len,
+ DMA_TO_DEVICE);
+@@ -466,6 +467,11 @@ static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,
+ len -= ETH_FCS_LEN;
+
+ skb = build_skb(buf, BGMAC_RX_ALLOC_SIZE);
++ if (unlikely(!skb)) {
++ bgmac_err(bgmac, "build_skb failed\n");
++ put_page(virt_to_head_page(buf));
++ break;
++ }
+ skb_put(skb, BGMAC_RX_FRAME_OFFSET +
+ BGMAC_RX_BUF_OFFSET + len);
+ skb_pull(skb, BGMAC_RX_FRAME_OFFSET +
+@@ -1299,7 +1305,8 @@ static int bgmac_open(struct net_device *net_dev)
+
+ phy_start(bgmac->phy_dev);
+
+- netif_carrier_on(net_dev);
++ netif_start_queue(net_dev);
++
+ return 0;
+ }
+
+@@ -1564,6 +1571,11 @@ static int bgmac_probe(struct bcma_device *core)
+ dev_warn(&core->dev, "Using random MAC: %pM\n", mac);
+ }
+
++ /* This (reset &) enable is not preset in specs or reference driver but
++ * Broadcom does it in arch PCI code when enabling fake PCI device.
++ */
++ bcma_core_enable(core, 0);
++
+ /* Allocation and references */
+ net_dev = alloc_etherdev(sizeof(*bgmac));
+ if (!net_dev)
+diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c
+index c5e1d0ac75f9..8f3ef77902b9 100644
+--- a/drivers/net/ethernet/emulex/benet/be_cmds.c
++++ b/drivers/net/ethernet/emulex/benet/be_cmds.c
+@@ -1017,7 +1017,7 @@ int be_cmd_pmac_add(struct be_adapter *adapter, u8 *mac_addr,
+ err:
+ spin_unlock_bh(&adapter->mcc_lock);
+
+- if (status == MCC_STATUS_UNAUTHORIZED_REQUEST)
++ if (base_status(status) == MCC_STATUS_UNAUTHORIZED_REQUEST)
+ status = -EPERM;
+
+ return status;
+diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c
+index d74f5f4e5782..07eabf72c480 100644
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -900,10 +900,10 @@ static void korina_restart_task(struct work_struct *work)
+ DMA_STAT_DONE | DMA_STAT_HALT | DMA_STAT_ERR,
+ &lp->rx_dma_regs->dmasm);
+
+- korina_free_ring(dev);
+-
+ napi_disable(&lp->napi);
+
++ korina_free_ring(dev);
++
+ if (korina_init(dev) < 0) {
+ printk(KERN_ERR "%s: cannot restart device\n", dev->name);
+ return;
+@@ -1064,12 +1064,12 @@ static int korina_close(struct net_device *dev)
+ tmp = tmp | DMA_STAT_DONE | DMA_STAT_HALT | DMA_STAT_ERR;
+ writel(tmp, &lp->rx_dma_regs->dmasm);
+
+- korina_free_ring(dev);
+-
+ napi_disable(&lp->napi);
+
+ cancel_work_sync(&lp->restart_task);
+
++ korina_free_ring(dev);
++
+ free_irq(lp->rx_irq, dev);
+ free_irq(lp->tx_irq, dev);
+ free_irq(lp->ovr_irq, dev);
+diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
+index 337811d208bd..fdc129151b18 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
++++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
+@@ -514,8 +514,9 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
+ break;
+
+ case MLX4_EVENT_TYPE_SRQ_LIMIT:
+- mlx4_dbg(dev, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT\n",
+- __func__);
++ mlx4_dbg(dev, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT. srq_no=0x%x, eq 0x%x\n",
++ __func__, be32_to_cpu(eqe->event.srq.srqn),
++ eq->eqn);
+ case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR:
+ if (mlx4_is_master(dev)) {
+ /* forward only to slave owning the SRQ */
+@@ -530,15 +531,19 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
+ eq->eqn, eq->cons_index, ret);
+ break;
+ }
+- mlx4_warn(dev, "%s: slave:%d, srq_no:0x%x, event: %02x(%02x)\n",
+- __func__, slave,
+- be32_to_cpu(eqe->event.srq.srqn),
+- eqe->type, eqe->subtype);
++ if (eqe->type ==
++ MLX4_EVENT_TYPE_SRQ_CATAS_ERROR)
++ mlx4_warn(dev, "%s: slave:%d, srq_no:0x%x, event: %02x(%02x)\n",
++ __func__, slave,
++ be32_to_cpu(eqe->event.srq.srqn),
++ eqe->type, eqe->subtype);
+
+ if (!ret && slave != dev->caps.function) {
+- mlx4_warn(dev, "%s: sending event %02x(%02x) to slave:%d\n",
+- __func__, eqe->type,
+- eqe->subtype, slave);
++ if (eqe->type ==
++ MLX4_EVENT_TYPE_SRQ_CATAS_ERROR)
++ mlx4_warn(dev, "%s: sending event %02x(%02x) to slave:%d\n",
++ __func__, eqe->type,
++ eqe->subtype, slave);
+ mlx4_slave_event(dev, slave, eqe);
+ break;
+ }
+diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c
+index c56cf0b86f2c..09e3e0d8412e 100644
+--- a/drivers/net/phy/dp83640.c
++++ b/drivers/net/phy/dp83640.c
+@@ -895,7 +895,7 @@ static void decode_txts(struct dp83640_private *dp83640,
+ if (overflow) {
+ pr_debug("tx timestamp queue overflow, count %d\n", overflow);
+ while (skb) {
+- skb_complete_tx_timestamp(skb, NULL);
++ kfree_skb(skb);
+ skb = skb_dequeue(&dp83640->tx_queue);
+ }
+ return;
+diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
+index ef36e8c70b4d..64ca961bca18 100644
+--- a/drivers/net/virtio_net.c
++++ b/drivers/net/virtio_net.c
+@@ -47,8 +47,16 @@ module_param(gso, bool, 0444);
+ */
+ #define RECEIVE_AVG_WEIGHT 64
+
++/* With mergeable buffers we align buffer address and use the low bits to
++ * encode its true size. Buffer size is up to 1 page so we need to align to
++ * square root of page size to ensure we reserve enough bits to encode the true
++ * size.
++ */
++#define MERGEABLE_BUFFER_MIN_ALIGN_SHIFT ((PAGE_SHIFT + 1) / 2)
++
+ /* Minimum alignment for mergeable packet buffers. */
+-#define MERGEABLE_BUFFER_ALIGN max(L1_CACHE_BYTES, 256)
++#define MERGEABLE_BUFFER_ALIGN max(L1_CACHE_BYTES, \
++ 1 << MERGEABLE_BUFFER_MIN_ALIGN_SHIFT)
+
+ #define VIRTNET_DRIVER_VERSION "1.0.0"
+
+diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
+index d9e873c3a273..422a9379a644 100644
+--- a/drivers/net/vxlan.c
++++ b/drivers/net/vxlan.c
+@@ -2136,7 +2136,7 @@ static void vxlan_cleanup(unsigned long arg)
+ = container_of(p, struct vxlan_fdb, hlist);
+ unsigned long timeout;
+
+- if (f->state & NUD_PERMANENT)
++ if (f->state & (NUD_PERMANENT | NUD_NOARP))
+ continue;
+
+ timeout = f->used + vxlan->age_interval * HZ;
+diff --git a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+index 8a15ebbce4a3..c304b66af5c6 100644
+--- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+@@ -4384,6 +4384,11 @@ brcmf_cfg80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
+ cfg80211_mgmt_tx_status(wdev, *cookie, buf, len, true,
+ GFP_KERNEL);
+ } else if (ieee80211_is_action(mgmt->frame_control)) {
++ if (len > BRCMF_FIL_ACTION_FRAME_SIZE + DOT11_MGMT_HDR_LEN) {
++ brcmf_err("invalid action frame length\n");
++ err = -EINVAL;
++ goto exit;
++ }
+ af_params = kzalloc(sizeof(*af_params), GFP_KERNEL);
+ if (af_params == NULL) {
+ brcmf_err("unable to allocate frame\n");
+diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
+index eafaeb01aa3e..cdbad7d72afa 100644
+--- a/drivers/net/wireless/mac80211_hwsim.c
++++ b/drivers/net/wireless/mac80211_hwsim.c
+@@ -2538,7 +2538,7 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
+
+ tasklet_hrtimer_init(&data->beacon_timer,
+ mac80211_hwsim_beacon,
+- CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
++ CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
+
+ spin_lock_bh(&hwsim_radio_lock);
+ list_add_tail(&data->list, &hwsim_radios);
+diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
+index ea1be52f5515..8a38a5bd34b8 100644
+--- a/drivers/net/xen-netfront.c
++++ b/drivers/net/xen-netfront.c
+@@ -305,7 +305,7 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue)
+ queue->rx_skbs[id] = skb;
+
+ ref = gnttab_claim_grant_reference(&queue->gref_rx_head);
+- BUG_ON((signed short)ref < 0);
++ WARN_ON_ONCE(IS_ERR_VALUE((unsigned long)(int)ref));
+ queue->grant_rx_ref[id] = ref;
+
+ pfn = page_to_pfn(skb_frag_page(&skb_shinfo(skb)->frags[0]));
+@@ -323,7 +323,7 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue)
+ queue->rx.req_prod_pvt = req_prod;
+
+ /* Not enough requests? Try again later. */
+- if (req_prod - queue->rx.rsp_cons < NET_RX_SLOTS_MIN) {
++ if (req_prod - queue->rx.sring->req_prod < NET_RX_SLOTS_MIN) {
+ mod_timer(&queue->rx_refill_timer, jiffies + (HZ/10));
+ return;
+ }
+@@ -429,7 +429,7 @@ static struct xen_netif_tx_request *xennet_make_one_txreq(
+ id = get_id_from_freelist(&queue->tx_skb_freelist, queue->tx_skbs);
+ tx = RING_GET_REQUEST(&queue->tx, queue->tx.req_prod_pvt++);
+ ref = gnttab_claim_grant_reference(&queue->gref_tx_head);
+- BUG_ON((signed short)ref < 0);
++ WARN_ON_ONCE(IS_ERR_VALUE((unsigned long)(int)ref));
+
+ gnttab_grant_foreign_access_ref(ref, queue->info->xbdev->otherend_id,
+ page_to_mfn(page), GNTMAP_readonly);
+diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
+index 63ea1e5b1c95..bf89754fe973 100644
+--- a/drivers/of/fdt.c
++++ b/drivers/of/fdt.c
+@@ -618,9 +618,12 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
+ const char *pathp;
+ int offset, rc = 0, depth = -1;
+
+- for (offset = fdt_next_node(blob, -1, &depth);
+- offset >= 0 && depth >= 0 && !rc;
+- offset = fdt_next_node(blob, offset, &depth)) {
++ if (!blob)
++ return 0;
++
++ for (offset = fdt_next_node(blob, -1, &depth);
++ offset >= 0 && depth >= 0 && !rc;
++ offset = fdt_next_node(blob, offset, &depth)) {
+
+ pathp = fdt_get_name(blob, offset, NULL);
+ if (*pathp == '/')
+diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
+index 02ff84fcfa61..635e7c3a24ad 100644
+--- a/drivers/parisc/ccio-dma.c
++++ b/drivers/parisc/ccio-dma.c
+@@ -743,6 +743,8 @@ ccio_map_single(struct device *dev, void *addr, size_t size,
+
+ BUG_ON(!dev);
+ ioc = GET_IOC(dev);
++ if (!ioc)
++ return DMA_ERROR_CODE;
+
+ BUG_ON(size <= 0);
+
+@@ -807,6 +809,10 @@ ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size,
+
+ BUG_ON(!dev);
+ ioc = GET_IOC(dev);
++ if (!ioc) {
++ WARN_ON(!ioc);
++ return;
++ }
+
+ DBG_RUN("%s() iovp 0x%lx/%x\n",
+ __func__, (long)iova, size);
+@@ -910,6 +916,8 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
+
+ BUG_ON(!dev);
+ ioc = GET_IOC(dev);
++ if (!ioc)
++ return 0;
+
+ DBG_RUN_SG("%s() START %d entries\n", __func__, nents);
+
+@@ -982,6 +990,10 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
+
+ BUG_ON(!dev);
+ ioc = GET_IOC(dev);
++ if (!ioc) {
++ WARN_ON(!ioc);
++ return;
++ }
+
+ DBG_RUN_SG("%s() START %d entries, %p,%x\n",
+ __func__, nents, sg_virt(sglist), sglist->length);
+diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
+index a0580afe1713..7b0ca1551d7b 100644
+--- a/drivers/parisc/dino.c
++++ b/drivers/parisc/dino.c
+@@ -154,7 +154,10 @@ struct dino_device
+ };
+
+ /* Looks nice and keeps the compiler happy */
+-#define DINO_DEV(d) ((struct dino_device *) d)
++#define DINO_DEV(d) ({ \
++ void *__pdata = d; \
++ BUG_ON(!__pdata); \
++ (struct dino_device *)__pdata; })
+
+
+ /*
+diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
+index a32c1f6c252c..3901ff66d0ee 100644
+--- a/drivers/parisc/lba_pci.c
++++ b/drivers/parisc/lba_pci.c
+@@ -111,8 +111,10 @@ static u32 lba_t32;
+
+
+ /* Looks nice and keeps the compiler happy */
+-#define LBA_DEV(d) ((struct lba_device *) (d))
+-
++#define LBA_DEV(d) ({ \
++ void *__pdata = d; \
++ BUG_ON(!__pdata); \
++ (struct lba_device *)__pdata; })
+
+ /*
+ ** Only allow 8 subsidiary busses per LBA
+diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
+index f1441e466c06..d3243071509a 100644
+--- a/drivers/parisc/sba_iommu.c
++++ b/drivers/parisc/sba_iommu.c
+@@ -691,6 +691,8 @@ static int sba_dma_supported( struct device *dev, u64 mask)
+ return 0;
+
+ ioc = GET_IOC(dev);
++ if (!ioc)
++ return 0;
+
+ /*
+ * check if mask is >= than the current max IO Virt Address
+@@ -722,6 +724,8 @@ sba_map_single(struct device *dev, void *addr, size_t size,
+ int pide;
+
+ ioc = GET_IOC(dev);
++ if (!ioc)
++ return DMA_ERROR_CODE;
+
+ /* save offset bits */
+ offset = ((dma_addr_t) (long) addr) & ~IOVP_MASK;
+@@ -803,6 +807,10 @@ sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size,
+ DBG_RUN("%s() iovp 0x%lx/%x\n", __func__, (long) iova, size);
+
+ ioc = GET_IOC(dev);
++ if (!ioc) {
++ WARN_ON(!ioc);
++ return;
++ }
+ offset = iova & ~IOVP_MASK;
+ iova ^= offset; /* clear offset bits */
+ size += offset;
+@@ -942,6 +950,8 @@ sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
+ DBG_RUN_SG("%s() START %d entries\n", __func__, nents);
+
+ ioc = GET_IOC(dev);
++ if (!ioc)
++ return 0;
+
+ /* Fast path single entry scatterlists. */
+ if (nents == 1) {
+@@ -1027,6 +1037,10 @@ sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
+ __func__, nents, sg_virt(sglist), sglist->length);
+
+ ioc = GET_IOC(dev);
++ if (!ioc) {
++ WARN_ON(!ioc);
++ return;
++ }
+
+ #ifdef SBA_COLLECT_STATS
+ ioc->usg_calls++;
+diff --git a/drivers/pinctrl/freescale/pinctrl-mxs.c b/drivers/pinctrl/freescale/pinctrl-mxs.c
+index 646d5c244af1..496075928af9 100644
+--- a/drivers/pinctrl/freescale/pinctrl-mxs.c
++++ b/drivers/pinctrl/freescale/pinctrl-mxs.c
+@@ -195,6 +195,16 @@ static int mxs_pinctrl_get_func_groups(struct pinctrl_dev *pctldev,
+ return 0;
+ }
+
++static void mxs_pinctrl_rmwl(u32 value, u32 mask, u8 shift, void __iomem *reg)
++{
++ u32 tmp;
++
++ tmp = readl(reg);
++ tmp &= ~(mask << shift);
++ tmp |= value << shift;
++ writel(tmp, reg);
++}
++
+ static int mxs_pinctrl_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
+ unsigned group)
+ {
+@@ -212,8 +222,7 @@ static int mxs_pinctrl_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
+ reg += bank * 0x20 + pin / 16 * 0x10;
+ shift = pin % 16 * 2;
+
+- writel(0x3 << shift, reg + CLR);
+- writel(g->muxsel[i] << shift, reg + SET);
++ mxs_pinctrl_rmwl(g->muxsel[i], 0x3, shift, reg);
+ }
+
+ return 0;
+@@ -280,8 +289,7 @@ static int mxs_pinconf_group_set(struct pinctrl_dev *pctldev,
+ /* mA */
+ if (config & MA_PRESENT) {
+ shift = pin % 8 * 4;
+- writel(0x3 << shift, reg + CLR);
+- writel(ma << shift, reg + SET);
++ mxs_pinctrl_rmwl(ma, 0x3, shift, reg);
+ }
+
+ /* vol */
+diff --git a/drivers/pinctrl/meson/pinctrl-meson8b.c b/drivers/pinctrl/meson/pinctrl-meson8b.c
+index 9677807db364..b505b87661f8 100644
+--- a/drivers/pinctrl/meson/pinctrl-meson8b.c
++++ b/drivers/pinctrl/meson/pinctrl-meson8b.c
+@@ -732,8 +732,8 @@ static const char * const sdxc_c_groups[] = {
+ static const char * const nand_groups[] = {
+ "nand_io", "nand_io_ce0", "nand_io_ce1",
+ "nand_io_rb0", "nand_ale", "nand_cle",
+- "nand_wen_clk", "nand_ren_clk", "nand_dqs0",
+- "nand_dqs1"
++ "nand_wen_clk", "nand_ren_clk", "nand_dqs_0",
++ "nand_dqs_1"
+ };
+
+ static const char * const nor_groups[] = {
+diff --git a/drivers/pinctrl/sh-pfc/core.c b/drivers/pinctrl/sh-pfc/core.c
+index 7b2c9495c383..a2b021958213 100644
+--- a/drivers/pinctrl/sh-pfc/core.c
++++ b/drivers/pinctrl/sh-pfc/core.c
+@@ -529,6 +529,9 @@ static int sh_pfc_probe(struct platform_device *pdev)
+ ret = info->ops->init(pfc);
+ if (ret < 0)
+ return ret;
++
++ /* .init() may have overridden pfc->info */
++ info = pfc->info;
+ }
+
+ pinctrl_provide_dummies();
+diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
+index 8cad6c165680..a100d58dbfd7 100644
+--- a/drivers/platform/x86/ideapad-laptop.c
++++ b/drivers/platform/x86/ideapad-laptop.c
+@@ -800,6 +800,7 @@ static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
+ case 11:
+ case 7:
+ case 6:
++ case 1:
+ ideapad_input_report(priv, vpc_bit);
+ break;
+ case 5:
+diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
+index 851e8efe364e..0e5b3584e918 100644
+--- a/drivers/scsi/lpfc/lpfc_els.c
++++ b/drivers/scsi/lpfc/lpfc_els.c
+@@ -3600,12 +3600,14 @@ lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
+ } else {
+ buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
+ lpfc_els_free_data(phba, buf_ptr1);
++ elsiocb->context2 = NULL;
+ }
+ }
+
+ if (elsiocb->context3) {
+ buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
+ lpfc_els_free_bpl(phba, buf_ptr);
++ elsiocb->context3 = NULL;
+ }
+ lpfc_sli_release_iocbq(phba, elsiocb);
+ return 0;
+diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
+index 56f73682d4bd..edb1a4d648dd 100644
+--- a/drivers/scsi/lpfc/lpfc_sli.c
++++ b/drivers/scsi/lpfc/lpfc_sli.c
+@@ -5887,18 +5887,25 @@ lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba)
+
+ free_vfi_bmask:
+ kfree(phba->sli4_hba.vfi_bmask);
++ phba->sli4_hba.vfi_bmask = NULL;
+ free_xri_ids:
+ kfree(phba->sli4_hba.xri_ids);
++ phba->sli4_hba.xri_ids = NULL;
+ free_xri_bmask:
+ kfree(phba->sli4_hba.xri_bmask);
++ phba->sli4_hba.xri_bmask = NULL;
+ free_vpi_ids:
+ kfree(phba->vpi_ids);
++ phba->vpi_ids = NULL;
+ free_vpi_bmask:
+ kfree(phba->vpi_bmask);
++ phba->vpi_bmask = NULL;
+ free_rpi_ids:
+ kfree(phba->sli4_hba.rpi_ids);
++ phba->sli4_hba.rpi_ids = NULL;
+ free_rpi_bmask:
+ kfree(phba->sli4_hba.rpi_bmask);
++ phba->sli4_hba.rpi_bmask = NULL;
+ err_exit:
+ return rc;
+ }
+diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
+index 1f3991ba7580..b33762f1013f 100644
+--- a/drivers/scsi/qla2xxx/qla_isr.c
++++ b/drivers/scsi/qla2xxx/qla_isr.c
+@@ -2434,6 +2434,10 @@ qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
+ if (pkt->entry_status & RF_BUSY)
+ res = DID_BUS_BUSY << 16;
+
++ if (pkt->entry_type == NOTIFY_ACK_TYPE &&
++ pkt->handle == QLA_TGT_SKIP_HANDLE)
++ return;
++
+ sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
+ if (sp) {
+ sp->done(ha, sp, res);
+diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
+index df6193b48177..4de1394ebf22 100644
+--- a/drivers/scsi/qla2xxx/qla_target.c
++++ b/drivers/scsi/qla2xxx/qla_target.c
+@@ -2872,7 +2872,7 @@ static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
+
+ pkt->entry_type = NOTIFY_ACK_TYPE;
+ pkt->entry_count = 1;
+- pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
++ pkt->handle = QLA_TGT_SKIP_HANDLE;
+
+ nack = (struct nack_to_isp *)pkt;
+ nack->ox_id = ntfy->ox_id;
+diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
+index 8a2cba63b5ff..80cebe691fee 100644
+--- a/drivers/scsi/sd.c
++++ b/drivers/scsi/sd.c
+@@ -2454,7 +2454,8 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer)
+ if (sdp->broken_fua) {
+ sd_first_printk(KERN_NOTICE, sdkp, "Disabling FUA\n");
+ sdkp->DPOFUA = 0;
+- } else if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw) {
++ } else if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw &&
++ !sdkp->device->use_16_for_rw) {
+ sd_first_printk(KERN_NOTICE, sdkp,
+ "Uses READ/WRITE(6), disabling FUA\n");
+ sdkp->DPOFUA = 0;
+diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
+index f164f24a4a55..d836414c920d 100644
+--- a/drivers/scsi/virtio_scsi.c
++++ b/drivers/scsi/virtio_scsi.c
+@@ -531,7 +531,9 @@ static int virtscsi_queuecommand(struct virtio_scsi *vscsi,
+ {
+ struct Scsi_Host *shost = virtio_scsi_host(vscsi->vdev);
+ struct virtio_scsi_cmd *cmd = scsi_cmd_priv(sc);
++ unsigned long flags;
+ int req_size;
++ int ret;
+
+ BUG_ON(scsi_sg_count(sc) > shost->sg_tablesize);
+
+@@ -556,8 +558,15 @@ static int virtscsi_queuecommand(struct virtio_scsi *vscsi,
+ req_size = sizeof(cmd->req.cmd);
+ }
+
+- if (virtscsi_kick_cmd(req_vq, cmd, req_size, sizeof(cmd->resp.cmd)) != 0)
++ ret = virtscsi_kick_cmd(req_vq, cmd, req_size, sizeof(cmd->resp.cmd));
++ if (ret == -EIO) {
++ cmd->resp.cmd.response = VIRTIO_SCSI_S_BAD_TARGET;
++ spin_lock_irqsave(&req_vq->vq_lock, flags);
++ virtscsi_complete_cmd(vscsi, cmd);
++ spin_unlock_irqrestore(&req_vq->vq_lock, flags);
++ } else if (ret != 0) {
+ return SCSI_MLQUEUE_HOST_BUSY;
++ }
+ return 0;
+ }
+
+diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
+index 5e991065f5b0..4e7110351e8c 100644
+--- a/drivers/spi/spi-davinci.c
++++ b/drivers/spi/spi-davinci.c
+@@ -655,7 +655,7 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
+ buf = t->rx_buf;
+ t->rx_dma = dma_map_single(&spi->dev, buf,
+ t->len, DMA_FROM_DEVICE);
+- if (!t->rx_dma) {
++ if (dma_mapping_error(&spi->dev, !t->rx_dma)) {
+ ret = -EFAULT;
+ goto err_rx_map;
+ }
+@@ -669,7 +669,7 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
+ buf = (void *)t->tx_buf;
+ t->tx_dma = dma_map_single(&spi->dev, buf,
+ t->len, DMA_TO_DEVICE);
+- if (!t->tx_dma) {
++ if (dma_mapping_error(&spi->dev, t->tx_dma)) {
+ ret = -EFAULT;
+ goto err_tx_map;
+ }
+diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
+index e78ddbe5a954..a503132f91e8 100644
+--- a/drivers/staging/comedi/comedi_fops.c
++++ b/drivers/staging/comedi/comedi_fops.c
+@@ -2885,6 +2885,7 @@ static int __init comedi_init(void)
+ dev = comedi_alloc_board_minor(NULL);
+ if (IS_ERR(dev)) {
+ comedi_cleanup_board_minors();
++ class_destroy(comedi_class);
+ cdev_del(&comedi_cdev);
+ unregister_chrdev_region(MKDEV(COMEDI_MAJOR, 0),
+ COMEDI_NUM_MINORS);
+diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
+index f7bcefd46b5e..c50b304ce0b4 100644
+--- a/drivers/staging/comedi/drivers/ni_mio_common.c
++++ b/drivers/staging/comedi/drivers/ni_mio_common.c
+@@ -2120,7 +2120,7 @@ static int ni_ai_insn_read(struct comedi_device *dev,
+ return -ETIME;
+ }
+ d += signbits;
+- data[n] = d;
++ data[n] = d & 0xffff;
+ }
+ } else if (devpriv->is_6143) {
+ for (n = 0; n < insn->n; n++) {
+@@ -2163,8 +2163,8 @@ static int ni_ai_insn_read(struct comedi_device *dev,
+ data[n] = dl;
+ } else {
+ d = ni_readw(dev, ADC_FIFO_Data_Register);
+- d += signbits; /* subtle: needs to be short addition */
+- data[n] = d;
++ d += signbits;
++ data[n] = d & 0xffff;
+ }
+ }
+ }
+diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
+index 766fdcece074..4c6b479a34c2 100644
+--- a/drivers/staging/vt6656/main_usb.c
++++ b/drivers/staging/vt6656/main_usb.c
+@@ -534,6 +534,9 @@ static int vnt_start(struct ieee80211_hw *hw)
+ goto free_all;
+ }
+
++ if (vnt_key_init_table(priv))
++ goto free_all;
++
+ priv->int_interval = 1; /* bInterval is set to 1 */
+
+ vnt_int_start_interrupt(priv);
+diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
+index 68bd7f5d9f73..6d561e1170f4 100644
+--- a/drivers/target/target_core_internal.h
++++ b/drivers/target/target_core_internal.h
+@@ -67,7 +67,7 @@ int init_se_kmem_caches(void);
+ void release_se_kmem_caches(void);
+ u32 scsi_get_new_index(scsi_index_t);
+ void transport_subsystem_check_init(void);
+-void transport_cmd_finish_abort(struct se_cmd *, int);
++int transport_cmd_finish_abort(struct se_cmd *, int);
+ unsigned char *transport_dump_cmd_direction(struct se_cmd *);
+ void transport_dump_dev_state(struct se_device *, char *, int *);
+ void transport_dump_dev_info(struct se_device *, struct se_lun *,
+diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
+index eed7c5a31b15..44510bd74963 100644
+--- a/drivers/target/target_core_tmr.c
++++ b/drivers/target/target_core_tmr.c
+@@ -78,7 +78,7 @@ void core_tmr_release_req(struct se_tmr_req *tmr)
+ kfree(tmr);
+ }
+
+-static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
++static int core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
+ {
+ unsigned long flags;
+ bool remove = true, send_tas;
+@@ -94,7 +94,7 @@ static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
+ transport_send_task_abort(cmd);
+ }
+
+- transport_cmd_finish_abort(cmd, remove);
++ return transport_cmd_finish_abort(cmd, remove);
+ }
+
+ static int target_check_cdb_and_preempt(struct list_head *list,
+@@ -190,8 +190,8 @@ void core_tmr_abort_task(
+ cancel_work_sync(&se_cmd->work);
+ transport_wait_for_tasks(se_cmd);
+
+- transport_cmd_finish_abort(se_cmd, true);
+- target_put_sess_cmd(se_cmd);
++ if (!transport_cmd_finish_abort(se_cmd, true))
++ target_put_sess_cmd(se_cmd);
+
+ printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for"
+ " ref_tag: %d\n", ref_tag);
+@@ -291,8 +291,8 @@ static void core_tmr_drain_tmr_list(
+ cancel_work_sync(&cmd->work);
+ transport_wait_for_tasks(cmd);
+
+- transport_cmd_finish_abort(cmd, 1);
+- target_put_sess_cmd(cmd);
++ if (!transport_cmd_finish_abort(cmd, 1))
++ target_put_sess_cmd(cmd);
+ }
+ }
+
+@@ -390,8 +390,8 @@ static void core_tmr_drain_state_list(
+ cancel_work_sync(&cmd->work);
+ transport_wait_for_tasks(cmd);
+
+- core_tmr_handle_tas_abort(cmd, tas);
+- target_put_sess_cmd(cmd);
++ if (!core_tmr_handle_tas_abort(cmd, tas))
++ target_put_sess_cmd(cmd);
+ }
+ }
+
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index 1cf3c0819b81..95c1c4ecf336 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -644,9 +644,10 @@ static void transport_lun_remove_cmd(struct se_cmd *cmd)
+ percpu_ref_put(&lun->lun_ref);
+ }
+
+-void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
++int transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
+ {
+ bool ack_kref = (cmd->se_cmd_flags & SCF_ACK_KREF);
++ int ret = 0;
+
+ if (cmd->se_cmd_flags & SCF_SE_LUN_CMD)
+ transport_lun_remove_cmd(cmd);
+@@ -658,9 +659,11 @@ void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
+ cmd->se_tfo->aborted_task(cmd);
+
+ if (transport_cmd_check_stop_to_fabric(cmd))
+- return;
++ return 1;
+ if (remove && ack_kref)
+- transport_put_cmd(cmd);
++ ret = transport_put_cmd(cmd);
++
++ return ret;
+ }
+
+ static void target_complete_failure_work(struct work_struct *work)
+diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
+index 2df90a54509a..50b67ff2b6ea 100644
+--- a/drivers/tty/vt/vt.c
++++ b/drivers/tty/vt/vt.c
+@@ -2693,13 +2693,13 @@ int tioclinux(struct tty_struct *tty, unsigned long arg)
+ * related to the kernel should not use this.
+ */
+ data = vt_get_shift_state();
+- ret = __put_user(data, p);
++ ret = put_user(data, p);
+ break;
+ case TIOCL_GETMOUSEREPORTING:
+ console_lock(); /* May be overkill */
+ data = mouse_reporting();
+ console_unlock();
+- ret = __put_user(data, p);
++ ret = put_user(data, p);
+ break;
+ case TIOCL_SETVESABLANK:
+ console_lock();
+@@ -2708,7 +2708,7 @@ int tioclinux(struct tty_struct *tty, unsigned long arg)
+ break;
+ case TIOCL_GETKMSGREDIRECT:
+ data = vt_get_kmsg_redirect();
+- ret = __put_user(data, p);
++ ret = put_user(data, p);
+ break;
+ case TIOCL_SETKMSGREDIRECT:
+ if (!capable(CAP_SYS_ADMIN)) {
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 96b21b0dac1e..3116edfcdc18 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -223,6 +223,10 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* Blackmagic Design UltraStudio SDI */
+ { USB_DEVICE(0x1edb, 0xbd4f), .driver_info = USB_QUIRK_NO_LPM },
+
++ /* Hauppauge HVR-950q */
++ { USB_DEVICE(0x2040, 0x7200), .driver_info =
++ USB_QUIRK_CONFIG_INTF_STRINGS },
++
+ /* INTEL VALUE SSD */
+ { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
+
+diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c
+index 4a1a543deeda..da885c3bc33f 100644
+--- a/drivers/usb/dwc3/dwc3-st.c
++++ b/drivers/usb/dwc3/dwc3-st.c
+@@ -227,7 +227,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
+
+ dwc3_data->syscfg_reg_off = res->start;
+
+- dev_vdbg(&pdev->dev, "glue-logic addr 0x%p, syscfg-reg offset 0x%x\n",
++ dev_vdbg(&pdev->dev, "glue-logic addr 0x%pK, syscfg-reg offset 0x%x\n",
+ dwc3_data->glue_base, dwc3_data->syscfg_reg_off);
+
+ dwc3_data->rstc_pwrdn = devm_reset_control_get(dev, "powerdown");
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index 48412e4afb1b..ff56aaa00bf7 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -1202,7 +1202,7 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,
+ goto out;
+ }
+
+- if (WARN(req->dep != dep, "request %p belongs to '%s'\n",
++ if (WARN(req->dep != dep, "request %pK belongs to '%s'\n",
+ request, req->dep->name)) {
+ ret = -EINVAL;
+ goto out;
+@@ -1249,7 +1249,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
+ dwc3_stop_active_transfer(dwc, dep->number, true);
+ goto out1;
+ }
+- dev_err(dwc->dev, "request %p was not queued to %s\n",
++ dev_err(dwc->dev, "request %pK was not queued to %s\n",
+ request, ep->name);
+ ret = -EINVAL;
+ goto out0;
+@@ -1854,7 +1854,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
+ * would help. Lets hope that if this occurs, someone
+ * fixes the root cause instead of looking away :)
+ */
+- dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n",
++ dev_err(dwc->dev, "%s's TRB (%pK) still owned by HW\n",
+ dep->name, trb);
+
+ count = trb->size & DWC3_TRB_SIZE_MASK;
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 921dd8b0733f..804b209f4c08 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -1668,12 +1668,12 @@ static int ffs_func_eps_enable(struct ffs_function *func)
+ ep->ep->driver_data = ep;
+ ep->ep->desc = ds;
+
+- comp_desc = (struct usb_ss_ep_comp_descriptor *)(ds +
+- USB_DT_ENDPOINT_SIZE);
+- ep->ep->maxburst = comp_desc->bMaxBurst + 1;
+-
+- if (needs_comp_desc)
++ if (needs_comp_desc) {
++ comp_desc = (struct usb_ss_ep_comp_descriptor *)(ds +
++ USB_DT_ENDPOINT_SIZE);
++ ep->ep->maxburst = comp_desc->bMaxBurst + 1;
+ ep->ep->comp_desc = comp_desc;
++ }
+
+ ret = usb_ep_enable(ep->ep);
+ if (likely(!ret)) {
+@@ -3459,6 +3459,7 @@ static void ffs_closed(struct ffs_data *ffs)
+ {
+ struct ffs_dev *ffs_obj;
+ struct f_fs_opts *opts;
++ struct config_item *ci;
+
+ ENTER();
+ ffs_dev_lock();
+@@ -3482,8 +3483,11 @@ static void ffs_closed(struct ffs_data *ffs)
+ || !atomic_read(&opts->func_inst.group.cg_item.ci_kref.refcount))
+ goto done;
+
+- unregister_gadget_item(ffs_obj->opts->
+- func_inst.group.cg_item.ci_parent->ci_parent);
++ ci = opts->func_inst.group.cg_item.ci_parent->ci_parent;
++ ffs_dev_unlock();
++
++ unregister_gadget_item(ci);
++ return;
+ done:
+ ffs_dev_unlock();
+ }
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index f36f964a9a37..69040e9069e0 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -132,6 +132,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x10C4, 0x8977) }, /* CEL MeshWorks DevKit Device */
+ { USB_DEVICE(0x10C4, 0x8998) }, /* KCF Technologies PRN */
+ { USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */
++ { USB_DEVICE(0x10C4, 0x8A5E) }, /* CEL EM3588 ZigBee USB Stick Long Range */
+ { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 80d93bccc09b..5d841485bbe3 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -1874,6 +1874,10 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&four_g_w100_blacklist
+ },
+ { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, SPEEDUP_PRODUCT_SU9800, 0xff) },
++ { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, 0x9801, 0xff),
++ .driver_info = (kernel_ulong_t)&net_intf3_blacklist },
++ { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, 0x9803, 0xff),
++ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE(LONGCHEER_VENDOR_ID, ZOOM_PRODUCT_4597) },
+ { USB_DEVICE(LONGCHEER_VENDOR_ID, IBALL_3_5G_CONNECT) },
+ { USB_DEVICE(HAIER_VENDOR_ID, HAIER_PRODUCT_CE100) },
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index 4f91868736a5..23c303b2a3a2 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -156,6 +156,7 @@ static const struct usb_device_id id_table[] = {
+ {DEVICE_SWI(0x1199, 0x9056)}, /* Sierra Wireless Modem */
+ {DEVICE_SWI(0x1199, 0x9060)}, /* Sierra Wireless Modem */
+ {DEVICE_SWI(0x1199, 0x9061)}, /* Sierra Wireless Modem */
++ {DEVICE_SWI(0x1199, 0x9063)}, /* Sierra Wireless EM7305 */
+ {DEVICE_SWI(0x1199, 0x9070)}, /* Sierra Wireless MC74xx */
+ {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx */
+ {DEVICE_SWI(0x1199, 0x9078)}, /* Sierra Wireless EM74xx */
+diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c
+index 44ab43fc4fcc..af10f7b131a4 100644
+--- a/drivers/usb/usbip/stub_main.c
++++ b/drivers/usb/usbip/stub_main.c
+@@ -262,7 +262,11 @@ void stub_device_cleanup_urbs(struct stub_device *sdev)
+ kmem_cache_free(stub_priv_cache, priv);
+
+ kfree(urb->transfer_buffer);
++ urb->transfer_buffer = NULL;
++
+ kfree(urb->setup_packet);
++ urb->setup_packet = NULL;
++
+ usb_free_urb(urb);
+ }
+ }
+diff --git a/drivers/usb/usbip/stub_tx.c b/drivers/usb/usbip/stub_tx.c
+index dbcabc9dbe0d..021003c4de53 100644
+--- a/drivers/usb/usbip/stub_tx.c
++++ b/drivers/usb/usbip/stub_tx.c
+@@ -28,7 +28,11 @@ static void stub_free_priv_and_urb(struct stub_priv *priv)
+ struct urb *urb = priv->urb;
+
+ kfree(urb->setup_packet);
++ urb->setup_packet = NULL;
++
+ kfree(urb->transfer_buffer);
++ urb->transfer_buffer = NULL;
++
+ list_del(&priv->list);
+ kmem_cache_free(stub_priv_cache, priv);
+ usb_free_urb(urb);
+diff --git a/drivers/watchdog/bcm_kona_wdt.c b/drivers/watchdog/bcm_kona_wdt.c
+index 22d8ae65772a..35af1d15c7ef 100644
+--- a/drivers/watchdog/bcm_kona_wdt.c
++++ b/drivers/watchdog/bcm_kona_wdt.c
+@@ -304,6 +304,8 @@ static int bcm_kona_wdt_probe(struct platform_device *pdev)
+ if (!wdt)
+ return -ENOMEM;
+
++ spin_lock_init(&wdt->lock);
++
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ wdt->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(wdt->base))
+@@ -316,7 +318,6 @@ static int bcm_kona_wdt_probe(struct platform_device *pdev)
+ return ret;
+ }
+
+- spin_lock_init(&wdt->lock);
+ platform_set_drvdata(pdev, wdt);
+ watchdog_set_drvdata(&bcm_kona_wdt_wdd, wdt);
+
+diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
+index 4c549323c605..3a0e6a031174 100644
+--- a/drivers/xen/swiotlb-xen.c
++++ b/drivers/xen/swiotlb-xen.c
+@@ -416,9 +416,9 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
+ if (map == SWIOTLB_MAP_ERROR)
+ return DMA_ERROR_CODE;
+
++ dev_addr = xen_phys_to_bus(map);
+ xen_dma_map_page(dev, pfn_to_page(map >> PAGE_SHIFT),
+ dev_addr, map & ~PAGE_MASK, size, dir, attrs);
+- dev_addr = xen_phys_to_bus(map);
+
+ /*
+ * Ensure that the address returned is DMA'ble
+@@ -574,13 +574,14 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
+ sg_dma_len(sgl) = 0;
+ return 0;
+ }
++ dev_addr = xen_phys_to_bus(map);
+ xen_dma_map_page(hwdev, pfn_to_page(map >> PAGE_SHIFT),
+ dev_addr,
+ map & ~PAGE_MASK,
+ sg->length,
+ dir,
+ attrs);
+- sg->dma_address = xen_phys_to_bus(map);
++ sg->dma_address = dev_addr;
+ } else {
+ /* we are not interested in the dma_addr returned by
+ * xen_dma_map_page, only in the potential cache flushes executed
+diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
+index ac7d921ed984..257425511d10 100644
+--- a/fs/autofs4/dev-ioctl.c
++++ b/fs/autofs4/dev-ioctl.c
+@@ -331,7 +331,7 @@ static int autofs_dev_ioctl_fail(struct file *fp,
+ int status;
+
+ token = (autofs_wqt_t) param->fail.token;
+- status = param->fail.status ? param->fail.status : -ENOENT;
++ status = param->fail.status < 0 ? param->fail.status : -ENOENT;
+ return autofs4_wait_release(sbi, token, status);
+ }
+
+diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
+index cd46e4158830..90f20f8ce87e 100644
+--- a/fs/binfmt_elf.c
++++ b/fs/binfmt_elf.c
+@@ -904,17 +904,60 @@ static int load_elf_binary(struct linux_binprm *bprm)
+ elf_flags = MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE;
+
+ vaddr = elf_ppnt->p_vaddr;
++ /*
++ * If we are loading ET_EXEC or we have already performed
++ * the ET_DYN load_addr calculations, proceed normally.
++ */
+ if (loc->elf_ex.e_type == ET_EXEC || load_addr_set) {
+ elf_flags |= MAP_FIXED;
+ } else if (loc->elf_ex.e_type == ET_DYN) {
+- /* Try and get dynamic programs out of the way of the
+- * default mmap base, as well as whatever program they
+- * might try to exec. This is because the brk will
+- * follow the loader, and is not movable. */
+- load_bias = ELF_ET_DYN_BASE - vaddr;
+- if (current->flags & PF_RANDOMIZE)
+- load_bias += arch_mmap_rnd();
+- load_bias = ELF_PAGESTART(load_bias);
++ /*
++ * This logic is run once for the first LOAD Program
++ * Header for ET_DYN binaries to calculate the
++ * randomization (load_bias) for all the LOAD
++ * Program Headers, and to calculate the entire
++ * size of the ELF mapping (total_size). (Note that
++ * load_addr_set is set to true later once the
++ * initial mapping is performed.)
++ *
++ * There are effectively two types of ET_DYN
++ * binaries: programs (i.e. PIE: ET_DYN with INTERP)
++ * and loaders (ET_DYN without INTERP, since they
++ * _are_ the ELF interpreter). The loaders must
++ * be loaded away from programs since the program
++ * may otherwise collide with the loader (especially
++ * for ET_EXEC which does not have a randomized
++ * position). For example to handle invocations of
++ * "./ld.so someprog" to test out a new version of
++ * the loader, the subsequent program that the
++ * loader loads must avoid the loader itself, so
++ * they cannot share the same load range. Sufficient
++ * room for the brk must be allocated with the
++ * loader as well, since brk must be available with
++ * the loader.
++ *
++ * Therefore, programs are loaded offset from
++ * ELF_ET_DYN_BASE and loaders are loaded into the
++ * independently randomized mmap region (0 load_bias
++ * without MAP_FIXED).
++ */
++ if (elf_interpreter) {
++ load_bias = ELF_ET_DYN_BASE;
++ if (current->flags & PF_RANDOMIZE)
++ load_bias += arch_mmap_rnd();
++ elf_flags |= MAP_FIXED;
++ } else
++ load_bias = 0;
++
++ /*
++ * Since load_bias is used for all subsequent loading
++ * calculations, we must lower it by the first vaddr
++ * so that the remaining calculations based on the
++ * ELF vaddrs will be correctly offset. The result
++ * is then page aligned.
++ */
++ load_bias = ELF_PAGESTART(load_bias - vaddr);
++
+ total_size = total_mapping_size(elf_phdata,
+ loc->elf_ex.e_phnum);
+ if (!total_size) {
+@@ -2285,6 +2328,7 @@ static int elf_core_dump(struct coredump_params *cprm)
+ goto end_coredump;
+ }
+ }
++ dump_truncate(cprm);
+
+ if (!elf_core_write_extra_data(cprm))
+ goto end_coredump;
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index 04997ac958c4..db6115486166 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -4358,8 +4358,19 @@ search_again:
+ if (found_type > min_type) {
+ del_item = 1;
+ } else {
+- if (item_end < new_size)
++ if (item_end < new_size) {
++ /*
++ * With NO_HOLES mode, for the following mapping
++ *
++ * [0-4k][hole][8k-12k]
++ *
++ * if truncating isize down to 6k, it ends up
++ * isize being 8k.
++ */
++ if (btrfs_fs_incompat(root->fs_info, NO_HOLES))
++ last_size = new_size;
+ break;
++ }
+ if (found_key.offset >= new_size)
+ del_item = 1;
+ else
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index 7d7bd466520b..cb3406815330 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -401,6 +401,9 @@ cifs_reconnect(struct TCP_Server_Info *server)
+ }
+ } while (server->tcpStatus == CifsNeedReconnect);
+
++ if (server->tcpStatus == CifsNeedNegotiate)
++ mod_delayed_work(cifsiod_wq, &server->echo, 0);
++
+ return rc;
+ }
+
+@@ -410,18 +413,27 @@ cifs_echo_request(struct work_struct *work)
+ int rc;
+ struct TCP_Server_Info *server = container_of(work,
+ struct TCP_Server_Info, echo.work);
++ unsigned long echo_interval;
++
++ /*
++ * If we need to renegotiate, set echo interval to zero to
++ * immediately call echo service where we can renegotiate.
++ */
++ if (server->tcpStatus == CifsNeedNegotiate)
++ echo_interval = 0;
++ else
++ echo_interval = SMB_ECHO_INTERVAL;
+
+ /*
+- * We cannot send an echo if it is disabled or until the
+- * NEGOTIATE_PROTOCOL request is done, which is indicated by
+- * server->ops->need_neg() == true. Also, no need to ping if
+- * we got a response recently.
++ * We cannot send an echo if it is disabled.
++ * Also, no need to ping if we got a response recently.
+ */
+
+ if (server->tcpStatus == CifsNeedReconnect ||
+- server->tcpStatus == CifsExiting || server->tcpStatus == CifsNew ||
++ server->tcpStatus == CifsExiting ||
++ server->tcpStatus == CifsNew ||
+ (server->ops->can_echo && !server->ops->can_echo(server)) ||
+- time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
++ time_before(jiffies, server->lstrp + echo_interval - HZ))
+ goto requeue_echo;
+
+ rc = server->ops->echo ? server->ops->echo(server) : -ENOSYS;
+diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
+index 87b87e091e8e..efd72e1fae74 100644
+--- a/fs/cifs/smb1ops.c
++++ b/fs/cifs/smb1ops.c
+@@ -849,8 +849,13 @@ cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_fid *fid, __u16 search_flags,
+ struct cifs_search_info *srch_inf)
+ {
+- return CIFSFindFirst(xid, tcon, path, cifs_sb,
+- &fid->netfid, search_flags, srch_inf, true);
++ int rc;
++
++ rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
++ &fid->netfid, search_flags, srch_inf, true);
++ if (rc)
++ cifs_dbg(FYI, "find first failed=%d\n", rc);
++ return rc;
+ }
+
+ static int
+diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
+index 57aeae6116d6..16212dab81d5 100644
+--- a/fs/cifs/smb2ops.c
++++ b/fs/cifs/smb2ops.c
+@@ -843,7 +843,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
+ kfree(utf16_path);
+ if (rc) {
+- cifs_dbg(VFS, "open dir failed\n");
++ cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
+ return rc;
+ }
+
+@@ -853,7 +853,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
+ rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
+ fid->volatile_fid, 0, srch_inf);
+ if (rc) {
+- cifs_dbg(VFS, "query directory failed\n");
++ cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
+ SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
+ }
+ return rc;
+diff --git a/fs/coredump.c b/fs/coredump.c
+index 26d05e3bc6db..e07cbb629f1c 100644
+--- a/fs/coredump.c
++++ b/fs/coredump.c
+@@ -803,3 +803,21 @@ int dump_align(struct coredump_params *cprm, int align)
+ return mod ? dump_skip(cprm, align - mod) : 1;
+ }
+ EXPORT_SYMBOL(dump_align);
++
++/*
++ * Ensures that file size is big enough to contain the current file
++ * postion. This prevents gdb from complaining about a truncated file
++ * if the last "write" to the file was dump_skip.
++ */
++void dump_truncate(struct coredump_params *cprm)
++{
++ struct file *file = cprm->file;
++ loff_t offset;
++
++ if (file->f_op->llseek && file->f_op->llseek != no_llseek) {
++ offset = file->f_op->llseek(file, 0, SEEK_CUR);
++ if (i_size_read(file->f_mapping->host) < offset)
++ do_truncate(file->f_path.dentry, offset, 0, file);
++ }
++}
++EXPORT_SYMBOL(dump_truncate);
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 11d466bbfb0b..5ca8f0b2b897 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -1128,11 +1128,12 @@ void shrink_dcache_sb(struct super_block *sb)
+ LIST_HEAD(dispose);
+
+ freed = list_lru_walk(&sb->s_dentry_lru,
+- dentry_lru_isolate_shrink, &dispose, UINT_MAX);
++ dentry_lru_isolate_shrink, &dispose, 1024);
+
+ this_cpu_sub(nr_dentry_unused, freed);
+ shrink_dentry_list(&dispose);
+- } while (freed > 0);
++ cond_resched();
++ } while (list_lru_count(&sb->s_dentry_lru) > 0);
+ }
+ EXPORT_SYMBOL(shrink_dcache_sb);
+
+diff --git a/fs/exec.c b/fs/exec.c
+index 04c9cab4d4d3..3ba35c21726e 100644
+--- a/fs/exec.c
++++ b/fs/exec.c
+@@ -199,7 +199,24 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
+
+ if (write) {
+ unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start;
+- struct rlimit *rlim;
++ unsigned long ptr_size, limit;
++
++ /*
++ * Since the stack will hold pointers to the strings, we
++ * must account for them as well.
++ *
++ * The size calculation is the entire vma while each arg page is
++ * built, so each time we get here it's calculating how far it
++ * is currently (rather than each call being just the newly
++ * added size from the arg page). As a result, we need to
++ * always add the entire size of the pointers, so that on the
++ * last call to get_arg_page() we'll actually have the entire
++ * correct size.
++ */
++ ptr_size = (bprm->argc + bprm->envc) * sizeof(void *);
++ if (ptr_size > ULONG_MAX - size)
++ goto fail;
++ size += ptr_size;
+
+ acct_arg_size(bprm, size / PAGE_SIZE);
+
+@@ -211,20 +228,24 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
+ return page;
+
+ /*
+- * Limit to 1/4-th the stack size for the argv+env strings.
++ * Limit to 1/4 of the max stack size or 3/4 of _STK_LIM
++ * (whichever is smaller) for the argv+env strings.
+ * This ensures that:
+ * - the remaining binfmt code will not run out of stack space,
+ * - the program will have a reasonable amount of stack left
+ * to work from.
+ */
+- rlim = current->signal->rlim;
+- if (size > ACCESS_ONCE(rlim[RLIMIT_STACK].rlim_cur) / 4) {
+- put_page(page);
+- return NULL;
+- }
++ limit = _STK_LIM / 4 * 3;
++ limit = min(limit, rlimit(RLIMIT_STACK) / 4);
++ if (size > limit)
++ goto fail;
+ }
+
+ return page;
++
++fail:
++ put_page(page);
++ return NULL;
+ }
+
+ static void put_arg_page(struct page *page)
+diff --git a/fs/fcntl.c b/fs/fcntl.c
+index ee85cd4e136a..62376451bbce 100644
+--- a/fs/fcntl.c
++++ b/fs/fcntl.c
+@@ -740,16 +740,10 @@ static int __init fcntl_init(void)
+ * Exceptions: O_NONBLOCK is a two bit define on parisc; O_NDELAY
+ * is defined as O_NONBLOCK on some platforms and not on others.
+ */
+- BUILD_BUG_ON(21 - 1 /* for O_RDONLY being 0 */ != HWEIGHT32(
+- O_RDONLY | O_WRONLY | O_RDWR |
+- O_CREAT | O_EXCL | O_NOCTTY |
+- O_TRUNC | O_APPEND | /* O_NONBLOCK | */
+- __O_SYNC | O_DSYNC | FASYNC |
+- O_DIRECT | O_LARGEFILE | O_DIRECTORY |
+- O_NOFOLLOW | O_NOATIME | O_CLOEXEC |
+- __FMODE_EXEC | O_PATH | __O_TMPFILE |
+- __FMODE_NONOTIFY
+- ));
++ BUILD_BUG_ON(21 - 1 /* for O_RDONLY being 0 */ !=
++ HWEIGHT32(
++ (VALID_OPEN_FLAGS & ~(O_NONBLOCK | O_NDELAY)) |
++ __FMODE_EXEC | __FMODE_NONOTIFY));
+
+ fasync_cache = kmem_cache_create("fasync_cache",
+ sizeof(struct fasync_struct), 0, SLAB_PANIC, NULL);
+diff --git a/fs/mount.h b/fs/mount.h
+index 32cabd55a787..bae2b0943019 100644
+--- a/fs/mount.h
++++ b/fs/mount.h
+@@ -57,6 +57,7 @@ struct mount {
+ struct mnt_namespace *mnt_ns; /* containing namespace */
+ struct mountpoint *mnt_mp; /* where is it mounted */
+ struct hlist_node mnt_mp_list; /* list mounts with the same mountpoint */
++ struct list_head mnt_umounting; /* list entry for umount propagation */
+ #ifdef CONFIG_FSNOTIFY
+ struct hlist_head mnt_fsnotify_marks;
+ __u32 mnt_fsnotify_mask;
+diff --git a/fs/namespace.c b/fs/namespace.c
+index df20ee946f7c..58b281ad30d5 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -237,6 +237,7 @@ static struct mount *alloc_vfsmnt(const char *name)
+ INIT_LIST_HEAD(&mnt->mnt_slave_list);
+ INIT_LIST_HEAD(&mnt->mnt_slave);
+ INIT_HLIST_NODE(&mnt->mnt_mp_list);
++ INIT_LIST_HEAD(&mnt->mnt_umounting);
+ #ifdef CONFIG_FSNOTIFY
+ INIT_HLIST_HEAD(&mnt->mnt_fsnotify_marks);
+ #endif
+diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
+index aadb4af4a0fe..b6d97dfa9cb6 100644
+--- a/fs/nfs/dir.c
++++ b/fs/nfs/dir.c
+@@ -2446,6 +2446,20 @@ int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags)
+ }
+ EXPORT_SYMBOL_GPL(nfs_may_open);
+
++static int nfs_execute_ok(struct inode *inode, int mask)
++{
++ struct nfs_server *server = NFS_SERVER(inode);
++ int ret;
++
++ if (mask & MAY_NOT_BLOCK)
++ ret = nfs_revalidate_inode_rcu(server, inode);
++ else
++ ret = nfs_revalidate_inode(server, inode);
++ if (ret == 0 && !execute_ok(inode))
++ ret = -EACCES;
++ return ret;
++}
++
+ int nfs_permission(struct inode *inode, int mask)
+ {
+ struct rpc_cred *cred;
+@@ -2463,6 +2477,9 @@ int nfs_permission(struct inode *inode, int mask)
+ case S_IFLNK:
+ goto out;
+ case S_IFREG:
++ if ((mask & MAY_OPEN) &&
++ nfs_server_capable(inode, NFS_CAP_ATOMIC_OPEN))
++ return 0;
+ break;
+ case S_IFDIR:
+ /*
+@@ -2495,8 +2512,8 @@ force_lookup:
+ res = PTR_ERR(cred);
+ }
+ out:
+- if (!res && (mask & MAY_EXEC) && !execute_ok(inode))
+- res = -EACCES;
++ if (!res && (mask & MAY_EXEC))
++ res = nfs_execute_ok(inode, mask);
+
+ dfprintk(VFS, "NFS: permission(%s/%lu), mask=0x%x, res=%d\n",
+ inode->i_sb->s_id, inode->i_ino, mask, res);
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index 5d8c7e978c33..f06af7248be7 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -2068,8 +2068,6 @@ static int nfs4_opendata_access(struct rpc_cred *cred,
+ if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0)
+ return 0;
+
+- /* even though OPEN succeeded, access is denied. Close the file */
+- nfs4_close_state(state, fmode);
+ return -EACCES;
+ }
+
+diff --git a/fs/open.c b/fs/open.c
+index ff80b2542989..d0169e52d7fe 100644
+--- a/fs/open.c
++++ b/fs/open.c
+@@ -881,6 +881,12 @@ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *o
+ int lookup_flags = 0;
+ int acc_mode;
+
++ /*
++ * Clear out all open flags we don't know about so that we don't report
++ * them in fcntl(F_GETFD) or similar interfaces.
++ */
++ flags &= VALID_OPEN_FLAGS;
++
+ if (flags & (O_CREAT | __O_TMPFILE))
+ op->mode = (mode & S_IALLUGO) | S_IFREG;
+ else
+diff --git a/fs/pnode.c b/fs/pnode.c
+index b394ca5307ec..d15c63e97ef1 100644
+--- a/fs/pnode.c
++++ b/fs/pnode.c
+@@ -24,6 +24,11 @@ static inline struct mount *first_slave(struct mount *p)
+ return list_entry(p->mnt_slave_list.next, struct mount, mnt_slave);
+ }
+
++static inline struct mount *last_slave(struct mount *p)
++{
++ return list_entry(p->mnt_slave_list.prev, struct mount, mnt_slave);
++}
++
+ static inline struct mount *next_slave(struct mount *p)
+ {
+ return list_entry(p->mnt_slave.next, struct mount, mnt_slave);
+@@ -164,6 +169,19 @@ static struct mount *propagation_next(struct mount *m,
+ }
+ }
+
++static struct mount *skip_propagation_subtree(struct mount *m,
++ struct mount *origin)
++{
++ /*
++ * Advance m such that propagation_next will not return
++ * the slaves of m.
++ */
++ if (!IS_MNT_NEW(m) && !list_empty(&m->mnt_slave_list))
++ m = last_slave(m);
++
++ return m;
++}
++
+ static struct mount *next_group(struct mount *m, struct mount *origin)
+ {
+ while (1) {
+@@ -415,65 +433,104 @@ void propagate_mount_unlock(struct mount *mnt)
+ }
+ }
+
+-/*
+- * Mark all mounts that the MNT_LOCKED logic will allow to be unmounted.
+- */
+-static void mark_umount_candidates(struct mount *mnt)
++static void umount_one(struct mount *mnt, struct list_head *to_umount)
+ {
+- struct mount *parent = mnt->mnt_parent;
+- struct mount *m;
+-
+- BUG_ON(parent == mnt);
+-
+- for (m = propagation_next(parent, parent); m;
+- m = propagation_next(m, parent)) {
+- struct mount *child = __lookup_mnt(&m->mnt,
+- mnt->mnt_mountpoint);
+- if (!child || (child->mnt.mnt_flags & MNT_UMOUNT))
+- continue;
+- if (!IS_MNT_LOCKED(child) || IS_MNT_MARKED(m)) {
+- SET_MNT_MARK(child);
+- }
+- }
++ CLEAR_MNT_MARK(mnt);
++ mnt->mnt.mnt_flags |= MNT_UMOUNT;
++ list_del_init(&mnt->mnt_child);
++ list_del_init(&mnt->mnt_umounting);
++ list_move_tail(&mnt->mnt_list, to_umount);
+ }
+
+ /*
+ * NOTE: unmounting 'mnt' naturally propagates to all other mounts its
+ * parent propagates to.
+ */
+-static void __propagate_umount(struct mount *mnt)
++static bool __propagate_umount(struct mount *mnt,
++ struct list_head *to_umount,
++ struct list_head *to_restore)
+ {
+- struct mount *parent = mnt->mnt_parent;
+- struct mount *m;
++ bool progress = false;
++ struct mount *child;
+
+- BUG_ON(parent == mnt);
++ /*
++ * The state of the parent won't change if this mount is
++ * already unmounted or marked as without children.
++ */
++ if (mnt->mnt.mnt_flags & (MNT_UMOUNT | MNT_MARKED))
++ goto out;
+
+- for (m = propagation_next(parent, parent); m;
+- m = propagation_next(m, parent)) {
+- struct mount *topper;
+- struct mount *child = __lookup_mnt(&m->mnt,
+- mnt->mnt_mountpoint);
+- /*
+- * umount the child only if the child has no children
+- * and the child is marked safe to unmount.
+- */
+- if (!child || !IS_MNT_MARKED(child))
++ /* Verify topper is the only grandchild that has not been
++ * speculatively unmounted.
++ */
++ list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
++ if (child->mnt_mountpoint == mnt->mnt.mnt_root)
+ continue;
+- CLEAR_MNT_MARK(child);
++ if (!list_empty(&child->mnt_umounting) && IS_MNT_MARKED(child))
++ continue;
++ /* Found a mounted child */
++ goto children;
++ }
+
+- /* If there is exactly one mount covering all of child
+- * replace child with that mount.
+- */
+- topper = find_topper(child);
+- if (topper)
+- mnt_change_mountpoint(child->mnt_parent, child->mnt_mp,
+- topper);
++ /* Mark mounts that can be unmounted if not locked */
++ SET_MNT_MARK(mnt);
++ progress = true;
++
++ /* If a mount is without children and not locked umount it. */
++ if (!IS_MNT_LOCKED(mnt)) {
++ umount_one(mnt, to_umount);
++ } else {
++children:
++ list_move_tail(&mnt->mnt_umounting, to_restore);
++ }
++out:
++ return progress;
++}
++
++static void umount_list(struct list_head *to_umount,
++ struct list_head *to_restore)
++{
++ struct mount *mnt, *child, *tmp;
++ list_for_each_entry(mnt, to_umount, mnt_list) {
++ list_for_each_entry_safe(child, tmp, &mnt->mnt_mounts, mnt_child) {
++ /* topper? */
++ if (child->mnt_mountpoint == mnt->mnt.mnt_root)
++ list_move_tail(&child->mnt_umounting, to_restore);
++ else
++ umount_one(child, to_umount);
++ }
++ }
++}
+
+- if (list_empty(&child->mnt_mounts)) {
+- list_del_init(&child->mnt_child);
+- child->mnt.mnt_flags |= MNT_UMOUNT;
+- list_move_tail(&child->mnt_list, &mnt->mnt_list);
++static void restore_mounts(struct list_head *to_restore)
++{
++ /* Restore mounts to a clean working state */
++ while (!list_empty(to_restore)) {
++ struct mount *mnt, *parent;
++ struct mountpoint *mp;
++
++ mnt = list_first_entry(to_restore, struct mount, mnt_umounting);
++ CLEAR_MNT_MARK(mnt);
++ list_del_init(&mnt->mnt_umounting);
++
++ /* Should this mount be reparented? */
++ mp = mnt->mnt_mp;
++ parent = mnt->mnt_parent;
++ while (parent->mnt.mnt_flags & MNT_UMOUNT) {
++ mp = parent->mnt_mp;
++ parent = parent->mnt_parent;
+ }
++ if (parent != mnt->mnt_parent)
++ mnt_change_mountpoint(parent, mp, mnt);
++ }
++}
++
++static void cleanup_umount_visitations(struct list_head *visited)
++{
++ while (!list_empty(visited)) {
++ struct mount *mnt =
++ list_first_entry(visited, struct mount, mnt_umounting);
++ list_del_init(&mnt->mnt_umounting);
+ }
+ }
+
+@@ -487,11 +544,68 @@ static void __propagate_umount(struct mount *mnt)
+ int propagate_umount(struct list_head *list)
+ {
+ struct mount *mnt;
++ LIST_HEAD(to_restore);
++ LIST_HEAD(to_umount);
++ LIST_HEAD(visited);
++
++ /* Find candidates for unmounting */
++ list_for_each_entry_reverse(mnt, list, mnt_list) {
++ struct mount *parent = mnt->mnt_parent;
++ struct mount *m;
++
++ /*
++ * If this mount has already been visited it is known that it's
++ * entire peer group and all of their slaves in the propagation
++ * tree for the mountpoint has already been visited and there is
++ * no need to visit them again.
++ */
++ if (!list_empty(&mnt->mnt_umounting))
++ continue;
++
++ list_add_tail(&mnt->mnt_umounting, &visited);
++ for (m = propagation_next(parent, parent); m;
++ m = propagation_next(m, parent)) {
++ struct mount *child = __lookup_mnt(&m->mnt,
++ mnt->mnt_mountpoint);
++ if (!child)
++ continue;
++
++ if (!list_empty(&child->mnt_umounting)) {
++ /*
++ * If the child has already been visited it is
++ * know that it's entire peer group and all of
++ * their slaves in the propgation tree for the
++ * mountpoint has already been visited and there
++ * is no need to visit this subtree again.
++ */
++ m = skip_propagation_subtree(m, parent);
++ continue;
++ } else if (child->mnt.mnt_flags & MNT_UMOUNT) {
++ /*
++ * We have come accross an partially unmounted
++ * mount in list that has not been visited yet.
++ * Remember it has been visited and continue
++ * about our merry way.
++ */
++ list_add_tail(&child->mnt_umounting, &visited);
++ continue;
++ }
++
++ /* Check the child and parents while progress is made */
++ while (__propagate_umount(child,
++ &to_umount, &to_restore)) {
++ /* Is the parent a umount candidate? */
++ child = child->mnt_parent;
++ if (list_empty(&child->mnt_umounting))
++ break;
++ }
++ }
++ }
+
+- list_for_each_entry_reverse(mnt, list, mnt_list)
+- mark_umount_candidates(mnt);
++ umount_list(&to_umount, &to_restore);
++ restore_mounts(&to_restore);
++ cleanup_umount_visitations(&visited);
++ list_splice_tail(&to_umount, list);
+
+- list_for_each_entry(mnt, list, mnt_list)
+- __propagate_umount(mnt);
+ return 0;
+ }
+diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h
+index dd4824589470..234331227c0c 100644
+--- a/fs/xfs/xfs_attr.h
++++ b/fs/xfs/xfs_attr.h
+@@ -112,6 +112,7 @@ typedef struct attrlist_cursor_kern {
+ *========================================================================*/
+
+
++/* Return 0 on success, or -errno; other state communicated via *context */
+ typedef int (*put_listent_func_t)(struct xfs_attr_list_context *, int,
+ unsigned char *, int, int, unsigned char *);
+
+diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c
+index 8f7e09d0d0f0..36db8b21969f 100644
+--- a/fs/xfs/xfs_attr_list.c
++++ b/fs/xfs/xfs_attr_list.c
+@@ -108,16 +108,14 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context)
+ (int)sfe->namelen,
+ (int)sfe->valuelen,
+ &sfe->nameval[sfe->namelen]);
+-
++ if (error)
++ return error;
+ /*
+ * Either search callback finished early or
+ * didn't fit it all in the buffer after all.
+ */
+ if (context->seen_enough)
+ break;
+-
+- if (error)
+- return error;
+ sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
+ }
+ trace_xfs_attr_list_sf_all(context);
+@@ -581,7 +579,7 @@ xfs_attr_put_listent(
+ trace_xfs_attr_list_full(context);
+ alist->al_more = 1;
+ context->seen_enough = 1;
+- return 1;
++ return 0;
+ }
+
+ aep = (attrlist_ent_t *)&context->alist[context->firstu];
+diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
+index e69a0899bc05..3b7985991823 100644
+--- a/fs/xfs/xfs_ioctl.c
++++ b/fs/xfs/xfs_ioctl.c
+@@ -402,6 +402,7 @@ xfs_attrlist_by_handle(
+ {
+ int error = -ENOMEM;
+ attrlist_cursor_kern_t *cursor;
++ struct xfs_fsop_attrlist_handlereq __user *p = arg;
+ xfs_fsop_attrlist_handlereq_t al_hreq;
+ struct dentry *dentry;
+ char *kbuf;
+@@ -434,6 +435,11 @@ xfs_attrlist_by_handle(
+ if (error)
+ goto out_kfree;
+
++ if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
++ error = -EFAULT;
++ goto out_kfree;
++ }
++
+ if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
+ error = -EFAULT;
+
+diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
+index c036815183cb..ead53c933de6 100644
+--- a/fs/xfs/xfs_xattr.c
++++ b/fs/xfs/xfs_xattr.c
+@@ -151,7 +151,8 @@ xfs_xattr_put_listent(
+ arraytop = context->count + prefix_len + namelen + 1;
+ if (arraytop > context->firstu) {
+ context->count = -1; /* insufficient space */
+- return 1;
++ context->seen_enough = 1;
++ return 0;
+ }
+ offset = (char *)context->alist + context->count;
+ strncpy(offset, xfs_xattr_prefix(flags), prefix_len);
+@@ -193,12 +194,15 @@ list_one_attr(const char *name, const size_t len, void *data,
+ }
+
+ ssize_t
+-xfs_vn_listxattr(struct dentry *dentry, char *data, size_t size)
++xfs_vn_listxattr(
++ struct dentry *dentry,
++ char *data,
++ size_t size)
+ {
+ struct xfs_attr_list_context context;
+ struct attrlist_cursor_kern cursor = { 0 };
+- struct inode *inode = d_inode(dentry);
+- int error;
++ struct inode *inode = d_inode(dentry);
++ int error;
+
+ /*
+ * First read the regular on-disk attributes.
+@@ -216,7 +220,9 @@ xfs_vn_listxattr(struct dentry *dentry, char *data, size_t size)
+ else
+ context.put_listent = xfs_xattr_put_listent_sizes;
+
+- xfs_attr_list_int(&context);
++ error = xfs_attr_list_int(&context);
++ if (error)
++ return error;
+ if (context.count < 0)
+ return -ERANGE;
+
+diff --git a/include/linux/coredump.h b/include/linux/coredump.h
+index d016a121a8c4..28ffa94aed6b 100644
+--- a/include/linux/coredump.h
++++ b/include/linux/coredump.h
+@@ -14,6 +14,7 @@ struct coredump_params;
+ extern int dump_skip(struct coredump_params *cprm, size_t nr);
+ extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr);
+ extern int dump_align(struct coredump_params *cprm, int align);
++extern void dump_truncate(struct coredump_params *cprm);
+ #ifdef CONFIG_COREDUMP
+ extern void do_coredump(const siginfo_t *siginfo);
+ #else
+diff --git a/include/linux/device.h b/include/linux/device.h
+index 6558af90c8fe..98a1d9748eec 100644
+--- a/include/linux/device.h
++++ b/include/linux/device.h
+@@ -338,6 +338,7 @@ int subsys_virtual_register(struct bus_type *subsys,
+ * @suspend: Used to put the device to sleep mode, usually to a low power
+ * state.
+ * @resume: Used to bring the device from the sleep mode.
++ * @shutdown: Called at shut-down time to quiesce the device.
+ * @ns_type: Callbacks so sysfs can detemine namespaces.
+ * @namespace: Namespace of the device belongs to this class.
+ * @pm: The default device power management operations of this class.
+@@ -366,6 +367,7 @@ struct class {
+
+ int (*suspend)(struct device *dev, pm_message_t state);
+ int (*resume)(struct device *dev);
++ int (*shutdown)(struct device *dev);
+
+ const struct kobj_ns_type_operations *ns_type;
+ const void *(*namespace)(struct device *dev);
+diff --git a/include/linux/fcntl.h b/include/linux/fcntl.h
+index 76ce329e656d..1b48d9c9a561 100644
+--- a/include/linux/fcntl.h
++++ b/include/linux/fcntl.h
+@@ -3,6 +3,12 @@
+
+ #include <uapi/linux/fcntl.h>
+
++/* list of all valid flags for the open/openat flags argument: */
++#define VALID_OPEN_FLAGS \
++ (O_RDONLY | O_WRONLY | O_RDWR | O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC | \
++ O_APPEND | O_NDELAY | O_NONBLOCK | O_NDELAY | __O_SYNC | O_DSYNC | \
++ FASYNC | O_DIRECT | O_LARGEFILE | O_DIRECTORY | O_NOFOLLOW | \
++ O_NOATIME | O_CLOEXEC | O_PATH | __O_TMPFILE)
+
+ #ifndef force_o_largefile
+ #define force_o_largefile() (BITS_PER_LONG != 32)
+diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h
+index 2a6b9947aaa3..743b34f56f2b 100644
+--- a/include/linux/list_lru.h
++++ b/include/linux/list_lru.h
+@@ -44,6 +44,7 @@ struct list_lru_node {
+ /* for cgroup aware lrus points to per cgroup lists, otherwise NULL */
+ struct list_lru_memcg *memcg_lrus;
+ #endif
++ long nr_items;
+ } ____cacheline_aligned_in_smp;
+
+ struct list_lru {
+diff --git a/include/linux/random.h b/include/linux/random.h
+index b05856e16b75..0fe49a14daa5 100644
+--- a/include/linux/random.h
++++ b/include/linux/random.h
+@@ -23,6 +23,7 @@ extern const struct file_operations random_fops, urandom_fops;
+ #endif
+
+ unsigned int get_random_int(void);
++unsigned long get_random_long(void);
+ unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len);
+
+ u32 prandom_u32(void);
+diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h
+index fb86963859c7..866cb3c596f9 100644
+--- a/include/linux/timekeeper_internal.h
++++ b/include/linux/timekeeper_internal.h
+@@ -29,7 +29,6 @@
+ */
+ struct tk_read_base {
+ struct clocksource *clock;
+- cycle_t (*read)(struct clocksource *cs);
+ cycle_t mask;
+ cycle_t cycle_last;
+ u32 mult;
+diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
+index c00c7393ce8c..e70cea22f093 100644
+--- a/include/linux/usb/hcd.h
++++ b/include/linux/usb/hcd.h
+@@ -548,9 +548,9 @@ extern void usb_ep0_reinit(struct usb_device *);
+ ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
+
+ #define EndpointRequest \
+- ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
++ ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
+ #define EndpointOutRequest \
+- ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
++ ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
+
+ /* class requests from the USB 2.0 hub spec, table 11-15 */
+ /* GetBusState and SetHubDescriptor are optional, omitted */
+diff --git a/include/net/xfrm.h b/include/net/xfrm.h
+index 36ac102c97c7..3dac7ac61f48 100644
+--- a/include/net/xfrm.h
++++ b/include/net/xfrm.h
+@@ -945,10 +945,6 @@ struct xfrm_dst {
+ struct flow_cache_object flo;
+ struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX];
+ int num_pols, num_xfrms;
+-#ifdef CONFIG_XFRM_SUB_POLICY
+- struct flowi *origin;
+- struct xfrm_selector *partner;
+-#endif
+ u32 xfrm_genid;
+ u32 policy_genid;
+ u32 route_mtu_cached;
+@@ -964,12 +960,6 @@ static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
+ dst_release(xdst->route);
+ if (likely(xdst->u.dst.xfrm))
+ xfrm_state_put(xdst->u.dst.xfrm);
+-#ifdef CONFIG_XFRM_SUB_POLICY
+- kfree(xdst->origin);
+- xdst->origin = NULL;
+- kfree(xdst->partner);
+- xdst->partner = NULL;
+-#endif
+ }
+ #endif
+
+diff --git a/ipc/mqueue.c b/ipc/mqueue.c
+index c3fc5c2b63f3..e4e8b6080b33 100644
+--- a/ipc/mqueue.c
++++ b/ipc/mqueue.c
+@@ -1239,8 +1239,10 @@ retry:
+
+ timeo = MAX_SCHEDULE_TIMEOUT;
+ ret = netlink_attachskb(sock, nc, &timeo, NULL);
+- if (ret == 1)
++ if (ret == 1) {
++ sock = NULL;
+ goto retry;
++ }
+ if (ret) {
+ sock = NULL;
+ nc = NULL;
+diff --git a/kernel/extable.c b/kernel/extable.c
+index c98f926277a8..818019777503 100644
+--- a/kernel/extable.c
++++ b/kernel/extable.c
+@@ -67,7 +67,7 @@ static inline int init_kernel_text(unsigned long addr)
+ return 0;
+ }
+
+-int core_kernel_text(unsigned long addr)
++int notrace core_kernel_text(unsigned long addr)
+ {
+ if (addr >= (unsigned long)_stext &&
+ addr < (unsigned long)_etext)
+diff --git a/kernel/fork.c b/kernel/fork.c
+index 8209fa2d36ef..edc1916e89ee 100644
+--- a/kernel/fork.c
++++ b/kernel/fork.c
+@@ -361,7 +361,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
+ set_task_stack_end_magic(tsk);
+
+ #ifdef CONFIG_CC_STACKPROTECTOR
+- tsk->stack_canary = get_random_int();
++ tsk->stack_canary = get_random_long();
+ #endif
+
+ /*
+diff --git a/kernel/panic.c b/kernel/panic.c
+index a4f7820f5930..10e28b8d1ac9 100644
+--- a/kernel/panic.c
++++ b/kernel/panic.c
+@@ -166,7 +166,7 @@ void panic(const char *fmt, ...)
+ * Delay timeout seconds before rebooting the machine.
+ * We can't use the "normal" timers since we just panicked.
+ */
+- pr_emerg("Rebooting in %d seconds..", panic_timeout);
++ pr_emerg("Rebooting in %d seconds..\n", panic_timeout);
+
+ for (i = 0; i < panic_timeout * 1000; i += PANIC_TIMER_STEP) {
+ touch_nmi_watchdog();
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 6cb5f00696f5..976d5fbcd60d 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -5863,6 +5863,9 @@ enum s_alloc {
+ * Build an iteration mask that can exclude certain CPUs from the upwards
+ * domain traversal.
+ *
++ * Only CPUs that can arrive at this group should be considered to continue
++ * balancing.
++ *
+ * Asymmetric node setups can result in situations where the domain tree is of
+ * unequal depth, make sure to skip domains that already cover the entire
+ * range.
+@@ -5874,18 +5877,31 @@ enum s_alloc {
+ */
+ static void build_group_mask(struct sched_domain *sd, struct sched_group *sg)
+ {
+- const struct cpumask *span = sched_domain_span(sd);
++ const struct cpumask *sg_span = sched_group_cpus(sg);
+ struct sd_data *sdd = sd->private;
+ struct sched_domain *sibling;
+ int i;
+
+- for_each_cpu(i, span) {
++ for_each_cpu(i, sg_span) {
+ sibling = *per_cpu_ptr(sdd->sd, i);
+- if (!cpumask_test_cpu(i, sched_domain_span(sibling)))
++
++ /*
++ * Can happen in the asymmetric case, where these siblings are
++ * unused. The mask will not be empty because those CPUs that
++ * do have the top domain _should_ span the domain.
++ */
++ if (!sibling->child)
++ continue;
++
++ /* If we would not end up here, we can't continue from here */
++ if (!cpumask_equal(sg_span, sched_domain_span(sibling->child)))
+ continue;
+
+ cpumask_set_cpu(i, sched_group_mask(sg));
+ }
++
++ /* We must not have empty masks here */
++ WARN_ON_ONCE(cpumask_empty(sched_group_mask(sg)));
+ }
+
+ /*
+diff --git a/kernel/sysctl.c b/kernel/sysctl.c
+index 1431089b8a67..d59551865035 100644
+--- a/kernel/sysctl.c
++++ b/kernel/sysctl.c
+@@ -173,7 +173,7 @@ extern int no_unaligned_warning;
+ #define SYSCTL_WRITES_WARN 0
+ #define SYSCTL_WRITES_STRICT 1
+
+-static int sysctl_writes_strict = SYSCTL_WRITES_WARN;
++static int sysctl_writes_strict = SYSCTL_WRITES_STRICT;
+
+ static int proc_do_cad_pid(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos);
+diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
+index d296b904685b..308f8f019594 100644
+--- a/kernel/time/timekeeping.c
++++ b/kernel/time/timekeeping.c
+@@ -116,6 +116,26 @@ static inline void tk_update_sleep_time(struct timekeeper *tk, ktime_t delta)
+ tk->offs_boot = ktime_add(tk->offs_boot, delta);
+ }
+
++/*
++ * tk_clock_read - atomic clocksource read() helper
++ *
++ * This helper is necessary to use in the read paths because, while the
++ * seqlock ensures we don't return a bad value while structures are updated,
++ * it doesn't protect from potential crashes. There is the possibility that
++ * the tkr's clocksource may change between the read reference, and the
++ * clock reference passed to the read function. This can cause crashes if
++ * the wrong clocksource is passed to the wrong read function.
++ * This isn't necessary to use when holding the timekeeper_lock or doing
++ * a read of the fast-timekeeper tkrs (which is protected by its own locking
++ * and update logic).
++ */
++static inline u64 tk_clock_read(struct tk_read_base *tkr)
++{
++ struct clocksource *clock = READ_ONCE(tkr->clock);
++
++ return clock->read(clock);
++}
++
+ #ifdef CONFIG_DEBUG_TIMEKEEPING
+ #define WARNING_FREQ (HZ*300) /* 5 minute rate-limiting */
+ /*
+@@ -184,7 +204,7 @@ static inline cycle_t timekeeping_get_delta(struct tk_read_base *tkr)
+ */
+ do {
+ seq = read_seqcount_begin(&tk_core.seq);
+- now = tkr->read(tkr->clock);
++ now = tk_clock_read(tkr);
+ last = tkr->cycle_last;
+ mask = tkr->mask;
+ max = tkr->clock->max_cycles;
+@@ -218,7 +238,7 @@ static inline cycle_t timekeeping_get_delta(struct tk_read_base *tkr)
+ cycle_t cycle_now, delta;
+
+ /* read clocksource */
+- cycle_now = tkr->read(tkr->clock);
++ cycle_now = tk_clock_read(tkr);
+
+ /* calculate the delta since the last update_wall_time */
+ delta = clocksource_delta(cycle_now, tkr->cycle_last, tkr->mask);
+@@ -246,12 +266,10 @@ static void tk_setup_internals(struct timekeeper *tk, struct clocksource *clock)
+
+ old_clock = tk->tkr_mono.clock;
+ tk->tkr_mono.clock = clock;
+- tk->tkr_mono.read = clock->read;
+ tk->tkr_mono.mask = clock->mask;
+- tk->tkr_mono.cycle_last = tk->tkr_mono.read(clock);
++ tk->tkr_mono.cycle_last = tk_clock_read(&tk->tkr_mono);
+
+ tk->tkr_raw.clock = clock;
+- tk->tkr_raw.read = clock->read;
+ tk->tkr_raw.mask = clock->mask;
+ tk->tkr_raw.cycle_last = tk->tkr_mono.cycle_last;
+
+@@ -440,7 +458,7 @@ static __always_inline u64 __ktime_get_fast_ns(struct tk_fast *tkf)
+
+ now += timekeeping_delta_to_ns(tkr,
+ clocksource_delta(
+- tkr->read(tkr->clock),
++ tk_clock_read(tkr),
+ tkr->cycle_last,
+ tkr->mask));
+ } while (read_seqcount_retry(&tkf->seq, seq));
+@@ -468,6 +486,10 @@ static cycle_t dummy_clock_read(struct clocksource *cs)
+ return cycles_at_suspend;
+ }
+
++static struct clocksource dummy_clock = {
++ .read = dummy_clock_read,
++};
++
+ /**
+ * halt_fast_timekeeper - Prevent fast timekeeper from accessing clocksource.
+ * @tk: Timekeeper to snapshot.
+@@ -484,13 +506,13 @@ static void halt_fast_timekeeper(struct timekeeper *tk)
+ struct tk_read_base *tkr = &tk->tkr_mono;
+
+ memcpy(&tkr_dummy, tkr, sizeof(tkr_dummy));
+- cycles_at_suspend = tkr->read(tkr->clock);
+- tkr_dummy.read = dummy_clock_read;
++ cycles_at_suspend = tk_clock_read(tkr);
++ tkr_dummy.clock = &dummy_clock;
+ update_fast_timekeeper(&tkr_dummy, &tk_fast_mono);
+
+ tkr = &tk->tkr_raw;
+ memcpy(&tkr_dummy, tkr, sizeof(tkr_dummy));
+- tkr_dummy.read = dummy_clock_read;
++ tkr_dummy.clock = &dummy_clock;
+ update_fast_timekeeper(&tkr_dummy, &tk_fast_raw);
+ }
+
+@@ -635,11 +657,10 @@ static void timekeeping_update(struct timekeeper *tk, unsigned int action)
+ */
+ static void timekeeping_forward_now(struct timekeeper *tk)
+ {
+- struct clocksource *clock = tk->tkr_mono.clock;
+ cycle_t cycle_now, delta;
+ s64 nsec;
+
+- cycle_now = tk->tkr_mono.read(clock);
++ cycle_now = tk_clock_read(&tk->tkr_mono);
+ delta = clocksource_delta(cycle_now, tk->tkr_mono.cycle_last, tk->tkr_mono.mask);
+ tk->tkr_mono.cycle_last = cycle_now;
+ tk->tkr_raw.cycle_last = cycle_now;
+@@ -1406,7 +1427,7 @@ void timekeeping_resume(void)
+ * The less preferred source will only be tried if there is no better
+ * usable source. The rtc part is handled separately in rtc core code.
+ */
+- cycle_now = tk->tkr_mono.read(clock);
++ cycle_now = tk_clock_read(&tk->tkr_mono);
+ if ((clock->flags & CLOCK_SOURCE_SUSPEND_NONSTOP) &&
+ cycle_now > tk->tkr_mono.cycle_last) {
+ u64 num, max = ULLONG_MAX;
+@@ -1801,7 +1822,7 @@ void update_wall_time(void)
+ #ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
+ offset = real_tk->cycle_interval;
+ #else
+- offset = clocksource_delta(tk->tkr_mono.read(tk->tkr_mono.clock),
++ offset = clocksource_delta(tk_clock_read(&tk->tkr_mono),
+ tk->tkr_mono.cycle_last, tk->tkr_mono.mask);
+ #endif
+
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index a4c0ae70c6dd..591b3b4f5337 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -1638,7 +1638,7 @@ tracing_generic_entry_update(struct trace_entry *entry, unsigned long flags,
+ TRACE_FLAG_IRQS_NOSUPPORT |
+ #endif
+ ((pc & HARDIRQ_MASK) ? TRACE_FLAG_HARDIRQ : 0) |
+- ((pc & SOFTIRQ_MASK) ? TRACE_FLAG_SOFTIRQ : 0) |
++ ((pc & SOFTIRQ_OFFSET) ? TRACE_FLAG_SOFTIRQ : 0) |
+ (tif_need_resched() ? TRACE_FLAG_NEED_RESCHED : 0) |
+ (test_preempt_need_resched() ? TRACE_FLAG_PREEMPT_RESCHED : 0);
+ }
+diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
+index 28b291f83a4c..9a4aee1d3345 100644
+--- a/kernel/trace/trace_kprobe.c
++++ b/kernel/trace/trace_kprobe.c
+@@ -671,30 +671,25 @@ static int create_trace_kprobe(int argc, char **argv)
+ pr_info("Probe point is not specified.\n");
+ return -EINVAL;
+ }
+- if (isdigit(argv[1][0])) {
+- if (is_return) {
+- pr_info("Return probe point must be a symbol.\n");
+- return -EINVAL;
+- }
+- /* an address specified */
+- ret = kstrtoul(&argv[1][0], 0, (unsigned long *)&addr);
+- if (ret) {
+- pr_info("Failed to parse address.\n");
+- return ret;
+- }
+- } else {
++
++ /* try to parse an address. if that fails, try to read the
++ * input as a symbol. */
++ if (kstrtoul(argv[1], 0, (unsigned long *)&addr)) {
+ /* a symbol specified */
+ symbol = argv[1];
+ /* TODO: support .init module functions */
+ ret = traceprobe_split_symbol_offset(symbol, &offset);
+ if (ret) {
+- pr_info("Failed to parse symbol.\n");
++ pr_info("Failed to parse either an address or a symbol.\n");
+ return ret;
+ }
+ if (offset && is_return) {
+ pr_info("Return probe must be used without offset.\n");
+ return -EINVAL;
+ }
++ } else if (is_return) {
++ pr_info("Return probe point must be a symbol.\n");
++ return -EINVAL;
+ }
+ argc -= 2; argv += 2;
+
+diff --git a/lib/cmdline.c b/lib/cmdline.c
+index 8f13cf73c2ec..79069d7938ea 100644
+--- a/lib/cmdline.c
++++ b/lib/cmdline.c
+@@ -22,14 +22,14 @@
+ * the values[M, M+1, ..., N] into the ints array in get_options.
+ */
+
+-static int get_range(char **str, int *pint)
++static int get_range(char **str, int *pint, int n)
+ {
+ int x, inc_counter, upper_range;
+
+ (*str)++;
+ upper_range = simple_strtol((*str), NULL, 0);
+ inc_counter = upper_range - *pint;
+- for (x = *pint; x < upper_range; x++)
++ for (x = *pint; n && x < upper_range; x++, n--)
+ *pint++ = x;
+ return inc_counter;
+ }
+@@ -96,7 +96,7 @@ char *get_options(const char *str, int nints, int *ints)
+ break;
+ if (res == 3) {
+ int range_nums;
+- range_nums = get_range((char **)&str, ints + i);
++ range_nums = get_range((char **)&str, ints + i, nints - i);
+ if (range_nums < 0)
+ break;
+ /*
+diff --git a/lib/swiotlb.c b/lib/swiotlb.c
+index 3c365ab6cf5f..87a203e439f8 100644
+--- a/lib/swiotlb.c
++++ b/lib/swiotlb.c
+@@ -452,11 +452,11 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev,
+ : 1UL << (BITS_PER_LONG - IO_TLB_SHIFT);
+
+ /*
+- * For mappings greater than a page, we limit the stride (and
+- * hence alignment) to a page size.
++ * For mappings greater than or equal to a page, we limit the stride
++ * (and hence alignment) to a page size.
+ */
+ nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
+- if (size > PAGE_SIZE)
++ if (size >= PAGE_SIZE)
+ stride = (1 << (PAGE_SHIFT - IO_TLB_SHIFT));
+ else
+ stride = 1;
+diff --git a/mm/huge_memory.c b/mm/huge_memory.c
+index a58270f60602..bdd6a8dd5797 100644
+--- a/mm/huge_memory.c
++++ b/mm/huge_memory.c
+@@ -1294,8 +1294,11 @@ int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
+ */
+ if (unlikely(pmd_trans_migrating(*pmdp))) {
+ page = pmd_page(*pmdp);
++ if (!get_page_unless_zero(page))
++ goto out_unlock;
+ spin_unlock(ptl);
+ wait_on_page_locked(page);
++ put_page(page);
+ goto out;
+ }
+
+@@ -1327,8 +1330,11 @@ int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
+
+ /* Migration could have started since the pmd_trans_migrating check */
+ if (!page_locked) {
++ if (!get_page_unless_zero(page))
++ goto out_unlock;
+ spin_unlock(ptl);
+ wait_on_page_locked(page);
++ put_page(page);
+ page_nid = -1;
+ goto out;
+ }
+diff --git a/mm/list_lru.c b/mm/list_lru.c
+index 84b4c21d78d7..2a6a2e4b64ba 100644
+--- a/mm/list_lru.c
++++ b/mm/list_lru.c
+@@ -103,6 +103,7 @@ bool list_lru_add(struct list_lru *lru, struct list_head *item)
+ if (list_empty(item)) {
+ list_add_tail(item, &l->list);
+ l->nr_items++;
++ nlru->nr_items++;
+ spin_unlock(&nlru->lock);
+ return true;
+ }
+@@ -122,6 +123,7 @@ bool list_lru_del(struct list_lru *lru, struct list_head *item)
+ if (!list_empty(item)) {
+ list_del_init(item);
+ l->nr_items--;
++ nlru->nr_items--;
+ spin_unlock(&nlru->lock);
+ return true;
+ }
+@@ -169,15 +171,10 @@ EXPORT_SYMBOL_GPL(list_lru_count_one);
+
+ unsigned long list_lru_count_node(struct list_lru *lru, int nid)
+ {
+- long count = 0;
+- int memcg_idx;
++ struct list_lru_node *nlru;
+
+- count += __list_lru_count_one(lru, nid, -1);
+- if (list_lru_memcg_aware(lru)) {
+- for_each_memcg_cache_index(memcg_idx)
+- count += __list_lru_count_one(lru, nid, memcg_idx);
+- }
+- return count;
++ nlru = &lru->node[nid];
++ return nlru->nr_items;
+ }
+ EXPORT_SYMBOL_GPL(list_lru_count_node);
+
+@@ -212,6 +209,7 @@ restart:
+ assert_spin_locked(&nlru->lock);
+ case LRU_REMOVED:
+ isolated++;
++ nlru->nr_items--;
+ /*
+ * If the lru lock has been dropped, our list
+ * traversal is now invalid and so we have to
+diff --git a/mm/swap_cgroup.c b/mm/swap_cgroup.c
+index 40dd0f9b00d6..09f733b0424a 100644
+--- a/mm/swap_cgroup.c
++++ b/mm/swap_cgroup.c
+@@ -205,6 +205,8 @@ void swap_cgroup_swapoff(int type)
+ struct page *page = map[i];
+ if (page)
+ __free_page(page);
++ if (!(i % SWAP_CLUSTER_MAX))
++ cond_resched();
+ }
+ vfree(map);
+ }
+diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
+index 59555f0f8fc8..d45e590e8f10 100644
+--- a/net/8021q/vlan.c
++++ b/net/8021q/vlan.c
+@@ -278,7 +278,8 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
+ return 0;
+
+ out_free_newdev:
+- free_netdev(new_dev);
++ if (new_dev->reg_state == NETREG_UNINITIALIZED)
++ free_netdev(new_dev);
+ return err;
+ }
+
+diff --git a/net/caif/cfpkt_skbuff.c b/net/caif/cfpkt_skbuff.c
+index f6c3b2137eea..bcb62e10a99c 100644
+--- a/net/caif/cfpkt_skbuff.c
++++ b/net/caif/cfpkt_skbuff.c
+@@ -81,11 +81,7 @@ static struct cfpkt *cfpkt_create_pfx(u16 len, u16 pfx)
+ {
+ struct sk_buff *skb;
+
+- if (likely(in_interrupt()))
+- skb = alloc_skb(len + pfx, GFP_ATOMIC);
+- else
+- skb = alloc_skb(len + pfx, GFP_KERNEL);
+-
++ skb = alloc_skb(len + pfx, GFP_ATOMIC);
+ if (unlikely(skb == NULL))
+ return NULL;
+
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 0f9289ff0f2a..bd47736b689e 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -1214,8 +1214,9 @@ int dev_set_alias(struct net_device *dev, const char *alias, size_t len)
+ if (!new_ifalias)
+ return -ENOMEM;
+ dev->ifalias = new_ifalias;
++ memcpy(dev->ifalias, alias, len);
++ dev->ifalias[len] = 0;
+
+- strlcpy(dev->ifalias, alias, len+1);
+ return len;
+ }
+
+@@ -6726,8 +6727,8 @@ struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
+ } else {
+ netdev_stats_to_stats64(storage, &dev->stats);
+ }
+- storage->rx_dropped += atomic_long_read(&dev->rx_dropped);
+- storage->tx_dropped += atomic_long_read(&dev->tx_dropped);
++ storage->rx_dropped += (unsigned long)atomic_long_read(&dev->rx_dropped);
++ storage->tx_dropped += (unsigned long)atomic_long_read(&dev->tx_dropped);
+ return storage;
+ }
+ EXPORT_SYMBOL(dev_get_stats);
+diff --git a/net/core/dst.c b/net/core/dst.c
+index 540066cb33ef..4d385b292f5d 100644
+--- a/net/core/dst.c
++++ b/net/core/dst.c
+@@ -373,6 +373,20 @@ static int dst_dev_event(struct notifier_block *this, unsigned long event,
+ spin_lock_bh(&dst_garbage.lock);
+ dst = dst_garbage.list;
+ dst_garbage.list = NULL;
++ /* The code in dst_ifdown places a hold on the loopback device.
++ * If the gc entry processing is set to expire after a lengthy
++ * interval, this hold can cause netdev_wait_allrefs() to hang
++ * out and wait for a long time -- until the the loopback
++ * interface is released. If we're really unlucky, it'll emit
++ * pr_emerg messages to console too. Reset the interval here,
++ * so dst cleanups occur in a more timely fashion.
++ */
++ if (dst_garbage.timer_inc > DST_GC_INC) {
++ dst_garbage.timer_inc = DST_GC_INC;
++ dst_garbage.timer_expires = DST_GC_MIN;
++ mod_delayed_work(system_wq, &dst_gc_work,
++ dst_garbage.timer_expires);
++ }
+ spin_unlock_bh(&dst_garbage.lock);
+
+ if (last)
+diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
+index 76d3bf70c31a..53b9099c331f 100644
+--- a/net/decnet/dn_route.c
++++ b/net/decnet/dn_route.c
+@@ -188,12 +188,6 @@ static inline void dnrt_free(struct dn_route *rt)
+ call_rcu_bh(&rt->dst.rcu_head, dst_rcu_free);
+ }
+
+-static inline void dnrt_drop(struct dn_route *rt)
+-{
+- dst_release(&rt->dst);
+- call_rcu_bh(&rt->dst.rcu_head, dst_rcu_free);
+-}
+-
+ static void dn_dst_check_expire(unsigned long dummy)
+ {
+ int i;
+@@ -248,7 +242,7 @@ static int dn_dst_gc(struct dst_ops *ops)
+ }
+ *rtp = rt->dst.dn_next;
+ rt->dst.dn_next = NULL;
+- dnrt_drop(rt);
++ dnrt_free(rt);
+ break;
+ }
+ spin_unlock_bh(&dn_rt_hash_table[i].lock);
+@@ -350,7 +344,7 @@ static int dn_insert_route(struct dn_route *rt, unsigned int hash, struct dn_rou
+ dst_use(&rth->dst, now);
+ spin_unlock_bh(&dn_rt_hash_table[hash].lock);
+
+- dnrt_drop(rt);
++ dst_free(&rt->dst);
+ *rp = rth;
+ return 0;
+ }
+@@ -380,7 +374,7 @@ static void dn_run_flush(unsigned long dummy)
+ for(; rt; rt = next) {
+ next = rcu_dereference_raw(rt->dst.dn_next);
+ RCU_INIT_POINTER(rt->dst.dn_next, NULL);
+- dst_free((struct dst_entry *)rt);
++ dnrt_free(rt);
+ }
+
+ nothing_to_declare:
+@@ -1189,7 +1183,7 @@ make_route:
+ if (dev_out->flags & IFF_LOOPBACK)
+ flags |= RTCF_LOCAL;
+
+- rt = dst_alloc(&dn_dst_ops, dev_out, 1, DST_OBSOLETE_NONE, DST_HOST);
++ rt = dst_alloc(&dn_dst_ops, dev_out, 0, DST_OBSOLETE_NONE, DST_HOST);
+ if (rt == NULL)
+ goto e_nobufs;
+
+diff --git a/net/decnet/netfilter/dn_rtmsg.c b/net/decnet/netfilter/dn_rtmsg.c
+index af34fc9bdf69..2fe45762ca70 100644
+--- a/net/decnet/netfilter/dn_rtmsg.c
++++ b/net/decnet/netfilter/dn_rtmsg.c
+@@ -102,7 +102,9 @@ static inline void dnrmg_receive_user_skb(struct sk_buff *skb)
+ {
+ struct nlmsghdr *nlh = nlmsg_hdr(skb);
+
+- if (nlh->nlmsg_len < sizeof(*nlh) || skb->len < nlh->nlmsg_len)
++ if (skb->len < sizeof(*nlh) ||
++ nlh->nlmsg_len < sizeof(*nlh) ||
++ skb->len < nlh->nlmsg_len)
+ return;
+
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
+diff --git a/net/dsa/slave.c b/net/dsa/slave.c
+index 57978c5b2c91..fe2758c72dbf 100644
+--- a/net/dsa/slave.c
++++ b/net/dsa/slave.c
+@@ -734,10 +734,8 @@ static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
+ /* Use already configured phy mode */
+ if (p->phy_interface == PHY_INTERFACE_MODE_NA)
+ p->phy_interface = p->phy->interface;
+- phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
+- p->phy_interface);
+-
+- return 0;
++ return phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
++ p->phy_interface);
+ }
+
+ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
+diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
+index 218abf9fb1ed..e2d3d62297ec 100644
+--- a/net/ipv4/igmp.c
++++ b/net/ipv4/igmp.c
+@@ -1080,6 +1080,7 @@ static void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im)
+ pmc = kzalloc(sizeof(*pmc), GFP_KERNEL);
+ if (!pmc)
+ return;
++ spin_lock_init(&pmc->lock);
+ spin_lock_bh(&im->lock);
+ pmc->interface = im->interface;
+ in_dev_hold(in_dev);
+@@ -1832,21 +1833,26 @@ static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
+
+ static void ip_mc_clear_src(struct ip_mc_list *pmc)
+ {
+- struct ip_sf_list *psf, *nextpsf;
++ struct ip_sf_list *psf, *nextpsf, *tomb, *sources;
+
+- for (psf = pmc->tomb; psf; psf = nextpsf) {
++ spin_lock_bh(&pmc->lock);
++ tomb = pmc->tomb;
++ pmc->tomb = NULL;
++ sources = pmc->sources;
++ pmc->sources = NULL;
++ pmc->sfmode = MCAST_EXCLUDE;
++ pmc->sfcount[MCAST_INCLUDE] = 0;
++ pmc->sfcount[MCAST_EXCLUDE] = 1;
++ spin_unlock_bh(&pmc->lock);
++
++ for (psf = tomb; psf; psf = nextpsf) {
+ nextpsf = psf->sf_next;
+ kfree(psf);
+ }
+- pmc->tomb = NULL;
+- for (psf = pmc->sources; psf; psf = nextpsf) {
++ for (psf = sources; psf; psf = nextpsf) {
+ nextpsf = psf->sf_next;
+ kfree(psf);
+ }
+- pmc->sources = NULL;
+- pmc->sfmode = MCAST_EXCLUDE;
+- pmc->sfcount[MCAST_INCLUDE] = 0;
+- pmc->sfcount[MCAST_EXCLUDE] = 1;
+ }
+
+ /* Join a multicast group
+diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
+index e31af0c23e56..df4edab0ba3a 100644
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -286,9 +286,9 @@ static void addrconf_mod_rs_timer(struct inet6_dev *idev,
+ static void addrconf_mod_dad_work(struct inet6_ifaddr *ifp,
+ unsigned long delay)
+ {
+- if (!delayed_work_pending(&ifp->dad_work))
+- in6_ifa_hold(ifp);
+- mod_delayed_work(addrconf_wq, &ifp->dad_work, delay);
++ in6_ifa_hold(ifp);
++ if (mod_delayed_work(addrconf_wq, &ifp->dad_work, delay))
++ in6_ifa_put(ifp);
+ }
+
+ static int snmp6_alloc_dev(struct inet6_dev *idev)
+@@ -1675,17 +1675,7 @@ struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct in6_addr *add
+
+ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
+ {
+- if (ifp->flags&IFA_F_PERMANENT) {
+- spin_lock_bh(&ifp->lock);
+- addrconf_del_dad_work(ifp);
+- ifp->flags |= IFA_F_TENTATIVE;
+- if (dad_failed)
+- ifp->flags |= IFA_F_DADFAILED;
+- spin_unlock_bh(&ifp->lock);
+- if (dad_failed)
+- ipv6_ifa_notify(0, ifp);
+- in6_ifa_put(ifp);
+- } else if (ifp->flags&IFA_F_TEMPORARY) {
++ if (ifp->flags&IFA_F_TEMPORARY) {
+ struct inet6_ifaddr *ifpub;
+ spin_lock_bh(&ifp->lock);
+ ifpub = ifp->ifpub;
+@@ -1698,6 +1688,16 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
+ spin_unlock_bh(&ifp->lock);
+ }
+ ipv6_del_addr(ifp);
++ } else if (ifp->flags&IFA_F_PERMANENT || !dad_failed) {
++ spin_lock_bh(&ifp->lock);
++ addrconf_del_dad_work(ifp);
++ ifp->flags |= IFA_F_TENTATIVE;
++ if (dad_failed)
++ ifp->flags |= IFA_F_DADFAILED;
++ spin_unlock_bh(&ifp->lock);
++ if (dad_failed)
++ ipv6_ifa_notify(0, ifp);
++ in6_ifa_put(ifp);
+ } else {
+ ipv6_del_addr(ifp);
+ }
+diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
+index f91ee783a5fd..eefb8759cfa4 100644
+--- a/net/ipv6/ip6_output.c
++++ b/net/ipv6/ip6_output.c
+@@ -978,8 +978,10 @@ static int ip6_dst_lookup_tail(struct sock *sk,
+ }
+ #endif
+ if (ipv6_addr_v4mapped(&fl6->saddr) &&
+- !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr)))
+- return -EAFNOSUPPORT;
++ !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) {
++ err = -EAFNOSUPPORT;
++ goto out_err_release;
++ }
+
+ return 0;
+
+diff --git a/net/key/af_key.c b/net/key/af_key.c
+index f0d52d721b3a..9a556e434f59 100644
+--- a/net/key/af_key.c
++++ b/net/key/af_key.c
+@@ -1135,6 +1135,7 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
+ goto out;
+ }
+
++ err = -ENOBUFS;
+ key = ext_hdrs[SADB_EXT_KEY_AUTH - 1];
+ if (sa->sadb_sa_auth) {
+ int keysize = 0;
+@@ -1146,8 +1147,10 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
+ if (key)
+ keysize = (key->sadb_key_bits + 7) / 8;
+ x->aalg = kmalloc(sizeof(*x->aalg) + keysize, GFP_KERNEL);
+- if (!x->aalg)
++ if (!x->aalg) {
++ err = -ENOMEM;
+ goto out;
++ }
+ strcpy(x->aalg->alg_name, a->name);
+ x->aalg->alg_key_len = 0;
+ if (key) {
+@@ -1166,8 +1169,10 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
+ goto out;
+ }
+ x->calg = kmalloc(sizeof(*x->calg), GFP_KERNEL);
+- if (!x->calg)
++ if (!x->calg) {
++ err = -ENOMEM;
+ goto out;
++ }
+ strcpy(x->calg->alg_name, a->name);
+ x->props.calgo = sa->sadb_sa_encrypt;
+ } else {
+@@ -1181,8 +1186,10 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
+ if (key)
+ keysize = (key->sadb_key_bits + 7) / 8;
+ x->ealg = kmalloc(sizeof(*x->ealg) + keysize, GFP_KERNEL);
+- if (!x->ealg)
++ if (!x->ealg) {
++ err = -ENOMEM;
+ goto out;
++ }
+ strcpy(x->ealg->alg_name, a->name);
+ x->ealg->alg_key_len = 0;
+ if (key) {
+@@ -1226,8 +1233,10 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
+ struct xfrm_encap_tmpl *natt;
+
+ x->encap = kmalloc(sizeof(*x->encap), GFP_KERNEL);
+- if (!x->encap)
++ if (!x->encap) {
++ err = -ENOMEM;
+ goto out;
++ }
+
+ natt = x->encap;
+ n_type = ext_hdrs[SADB_X_EXT_NAT_T_TYPE-1];
+diff --git a/net/mac80211/main.c b/net/mac80211/main.c
+index e86daed83c6f..0ddf23971b50 100644
+--- a/net/mac80211/main.c
++++ b/net/mac80211/main.c
+@@ -887,12 +887,17 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
+ supp_ht = supp_ht || sband->ht_cap.ht_supported;
+ supp_vht = supp_vht || sband->vht_cap.vht_supported;
+
+- if (sband->ht_cap.ht_supported)
+- local->rx_chains =
+- max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
+- local->rx_chains);
++ if (!sband->ht_cap.ht_supported)
++ continue;
+
+ /* TODO: consider VHT for RX chains, hopefully it's the same */
++ local->rx_chains =
++ max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
++ local->rx_chains);
++
++ /* no need to mask, SM_PS_DISABLED has all bits set */
++ sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
++ IEEE80211_HT_CAP_SM_PS_SHIFT;
+ }
+
+ /* if low-level driver supports AP, we also support VLAN */
+diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
+index a26bd6532829..a837e405a8ab 100644
+--- a/net/netfilter/ipvs/ip_vs_core.c
++++ b/net/netfilter/ipvs/ip_vs_core.c
+@@ -822,10 +822,8 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
+ {
+ unsigned int verdict = NF_DROP;
+
+- if (IP_VS_FWD_METHOD(cp) != 0) {
+- pr_err("shouldn't reach here, because the box is on the "
+- "half connection in the tun/dr module.\n");
+- }
++ if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ)
++ goto ignore_cp;
+
+ /* Ensure the checksum is correct */
+ if (!skb_csum_unnecessary(skb) && ip_vs_checksum_complete(skb, ihl)) {
+@@ -859,6 +857,8 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
+ ip_vs_notrack(skb);
+ else
+ ip_vs_update_conntrack(skb, cp, 0);
++
++ignore_cp:
+ verdict = NF_ACCEPT;
+
+ out:
+@@ -1229,8 +1229,11 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
+ */
+ cp = pp->conn_out_get(af, skb, &iph, 0);
+
+- if (likely(cp))
++ if (likely(cp)) {
++ if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ)
++ goto ignore_cp;
+ return handle_response(af, skb, pd, cp, &iph, hooknum);
++ }
+ if (sysctl_nat_icmp_send(net) &&
+ (pp->protocol == IPPROTO_TCP ||
+ pp->protocol == IPPROTO_UDP ||
+@@ -1272,9 +1275,15 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
+ }
+ }
+ }
++
++out:
+ IP_VS_DBG_PKT(12, af, pp, skb, 0,
+ "ip_vs_out: packet continues traversal as normal");
+ return NF_ACCEPT;
++
++ignore_cp:
++ __ip_vs_conn_put(cp);
++ goto out;
+ }
+
+ /*
+diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
+index 6b8b0abbfab4..b6e939a8b099 100644
+--- a/net/netfilter/nf_conntrack_netlink.c
++++ b/net/netfilter/nf_conntrack_netlink.c
+@@ -45,6 +45,8 @@
+ #include <net/netfilter/nf_conntrack_zones.h>
+ #include <net/netfilter/nf_conntrack_timestamp.h>
+ #include <net/netfilter/nf_conntrack_labels.h>
++#include <net/netfilter/nf_conntrack_seqadj.h>
++#include <net/netfilter/nf_conntrack_synproxy.h>
+ #ifdef CONFIG_NF_NAT_NEEDED
+ #include <net/netfilter/nf_nat_core.h>
+ #include <net/netfilter/nf_nat_l4proto.h>
+@@ -1727,6 +1729,8 @@ ctnetlink_create_conntrack(struct net *net, u16 zone,
+ nf_ct_tstamp_ext_add(ct, GFP_ATOMIC);
+ nf_ct_ecache_ext_add(ct, 0, 0, GFP_ATOMIC);
+ nf_ct_labels_ext_add(ct);
++ nfct_seqadj_ext_add(ct);
++ nfct_synproxy_ext_add(ct);
+
+ /* we must add conntrack extensions before confirmation. */
+ ct->status |= IPS_CONFIRMED;
+diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
+index e762de5ee89b..6531d7039b11 100644
+--- a/net/netfilter/xt_TCPMSS.c
++++ b/net/netfilter/xt_TCPMSS.c
+@@ -104,7 +104,7 @@ tcpmss_mangle_packet(struct sk_buff *skb,
+ tcph = (struct tcphdr *)(skb_network_header(skb) + tcphoff);
+ tcp_hdrlen = tcph->doff * 4;
+
+- if (len < tcp_hdrlen)
++ if (len < tcp_hdrlen || tcp_hdrlen < sizeof(struct tcphdr))
+ return -1;
+
+ if (info->mss == XT_TCPMSS_CLAMP_PMTU) {
+@@ -156,6 +156,10 @@ tcpmss_mangle_packet(struct sk_buff *skb,
+ if (len > tcp_hdrlen)
+ return 0;
+
++ /* tcph->doff has 4 bits, do not wrap it to 0 */
++ if (tcp_hdrlen >= 15 * 4)
++ return 0;
++
+ /*
+ * MSS Option not found ?! add it..
+ */
+diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c
+index db0f39f5ef96..6851a6d98fce 100644
+--- a/net/rxrpc/ar-key.c
++++ b/net/rxrpc/ar-key.c
+@@ -215,7 +215,7 @@ static int rxrpc_krb5_decode_principal(struct krb5_principal *princ,
+ unsigned int *_toklen)
+ {
+ const __be32 *xdr = *_xdr;
+- unsigned int toklen = *_toklen, n_parts, loop, tmp;
++ unsigned int toklen = *_toklen, n_parts, loop, tmp, paddedlen;
+
+ /* there must be at least one name, and at least #names+1 length
+ * words */
+@@ -245,16 +245,16 @@ static int rxrpc_krb5_decode_principal(struct krb5_principal *princ,
+ toklen -= 4;
+ if (tmp <= 0 || tmp > AFSTOKEN_STRING_MAX)
+ return -EINVAL;
+- if (tmp > toklen)
++ paddedlen = (tmp + 3) & ~3;
++ if (paddedlen > toklen)
+ return -EINVAL;
+ princ->name_parts[loop] = kmalloc(tmp + 1, GFP_KERNEL);
+ if (!princ->name_parts[loop])
+ return -ENOMEM;
+ memcpy(princ->name_parts[loop], xdr, tmp);
+ princ->name_parts[loop][tmp] = 0;
+- tmp = (tmp + 3) & ~3;
+- toklen -= tmp;
+- xdr += tmp >> 2;
++ toklen -= paddedlen;
++ xdr += paddedlen >> 2;
+ }
+
+ if (toklen < 4)
+@@ -263,16 +263,16 @@ static int rxrpc_krb5_decode_principal(struct krb5_principal *princ,
+ toklen -= 4;
+ if (tmp <= 0 || tmp > AFSTOKEN_K5_REALM_MAX)
+ return -EINVAL;
+- if (tmp > toklen)
++ paddedlen = (tmp + 3) & ~3;
++ if (paddedlen > toklen)
+ return -EINVAL;
+ princ->realm = kmalloc(tmp + 1, GFP_KERNEL);
+ if (!princ->realm)
+ return -ENOMEM;
+ memcpy(princ->realm, xdr, tmp);
+ princ->realm[tmp] = 0;
+- tmp = (tmp + 3) & ~3;
+- toklen -= tmp;
+- xdr += tmp >> 2;
++ toklen -= paddedlen;
++ xdr += paddedlen >> 2;
+
+ _debug("%s/...@%s", princ->name_parts[0], princ->realm);
+
+@@ -291,7 +291,7 @@ static int rxrpc_krb5_decode_tagged_data(struct krb5_tagged_data *td,
+ unsigned int *_toklen)
+ {
+ const __be32 *xdr = *_xdr;
+- unsigned int toklen = *_toklen, len;
++ unsigned int toklen = *_toklen, len, paddedlen;
+
+ /* there must be at least one tag and one length word */
+ if (toklen <= 8)
+@@ -305,15 +305,17 @@ static int rxrpc_krb5_decode_tagged_data(struct krb5_tagged_data *td,
+ toklen -= 8;
+ if (len > max_data_size)
+ return -EINVAL;
++ paddedlen = (len + 3) & ~3;
++ if (paddedlen > toklen)
++ return -EINVAL;
+ td->data_len = len;
+
+ if (len > 0) {
+ td->data = kmemdup(xdr, len, GFP_KERNEL);
+ if (!td->data)
+ return -ENOMEM;
+- len = (len + 3) & ~3;
+- toklen -= len;
+- xdr += len >> 2;
++ toklen -= paddedlen;
++ xdr += paddedlen >> 2;
+ }
+
+ _debug("tag %x len %x", td->tag, td->data_len);
+@@ -385,7 +387,7 @@ static int rxrpc_krb5_decode_ticket(u8 **_ticket, u16 *_tktlen,
+ const __be32 **_xdr, unsigned int *_toklen)
+ {
+ const __be32 *xdr = *_xdr;
+- unsigned int toklen = *_toklen, len;
++ unsigned int toklen = *_toklen, len, paddedlen;
+
+ /* there must be at least one length word */
+ if (toklen <= 4)
+@@ -397,6 +399,9 @@ static int rxrpc_krb5_decode_ticket(u8 **_ticket, u16 *_tktlen,
+ toklen -= 4;
+ if (len > AFSTOKEN_K5_TIX_MAX)
+ return -EINVAL;
++ paddedlen = (len + 3) & ~3;
++ if (paddedlen > toklen)
++ return -EINVAL;
+ *_tktlen = len;
+
+ _debug("ticket len %u", len);
+@@ -405,9 +410,8 @@ static int rxrpc_krb5_decode_ticket(u8 **_ticket, u16 *_tktlen,
+ *_ticket = kmemdup(xdr, len, GFP_KERNEL);
+ if (!*_ticket)
+ return -ENOMEM;
+- len = (len + 3) & ~3;
+- toklen -= len;
+- xdr += len >> 2;
++ toklen -= paddedlen;
++ xdr += paddedlen >> 2;
+ }
+
+ *_xdr = xdr;
+@@ -550,7 +554,7 @@ static int rxrpc_preparse_xdr(struct key_preparsed_payload *prep)
+ {
+ const __be32 *xdr = prep->data, *token;
+ const char *cp;
+- unsigned int len, tmp, loop, ntoken, toklen, sec_ix;
++ unsigned int len, paddedlen, loop, ntoken, toklen, sec_ix;
+ size_t datalen = prep->datalen;
+ int ret;
+
+@@ -576,22 +580,21 @@ static int rxrpc_preparse_xdr(struct key_preparsed_payload *prep)
+ if (len < 1 || len > AFSTOKEN_CELL_MAX)
+ goto not_xdr;
+ datalen -= 4;
+- tmp = (len + 3) & ~3;
+- if (tmp > datalen)
++ paddedlen = (len + 3) & ~3;
++ if (paddedlen > datalen)
+ goto not_xdr;
+
+ cp = (const char *) xdr;
+ for (loop = 0; loop < len; loop++)
+ if (!isprint(cp[loop]))
+ goto not_xdr;
+- if (len < tmp)
+- for (; loop < tmp; loop++)
+- if (cp[loop])
+- goto not_xdr;
++ for (; loop < paddedlen; loop++)
++ if (cp[loop])
++ goto not_xdr;
+ _debug("cellname: [%u/%u] '%*.*s'",
+- len, tmp, len, len, (const char *) xdr);
+- datalen -= tmp;
+- xdr += tmp >> 2;
++ len, paddedlen, len, len, (const char *) xdr);
++ datalen -= paddedlen;
++ xdr += paddedlen >> 2;
+
+ /* get the token count */
+ if (datalen < 12)
+@@ -612,10 +615,11 @@ static int rxrpc_preparse_xdr(struct key_preparsed_payload *prep)
+ sec_ix = ntohl(*xdr);
+ datalen -= 4;
+ _debug("token: [%x/%zx] %x", toklen, datalen, sec_ix);
+- if (toklen < 20 || toklen > datalen)
++ paddedlen = (toklen + 3) & ~3;
++ if (toklen < 20 || toklen > datalen || paddedlen > datalen)
+ goto not_xdr;
+- datalen -= (toklen + 3) & ~3;
+- xdr += (toklen + 3) >> 2;
++ datalen -= paddedlen;
++ xdr += paddedlen >> 2;
+
+ } while (--loop > 0);
+
+diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
+index c244a49ae4ac..25353056439d 100644
+--- a/net/sched/sch_api.c
++++ b/net/sched/sch_api.c
+@@ -1004,6 +1004,9 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
+
+ return sch;
+ }
++ /* ops->init() failed, we call ->destroy() like qdisc_create_dflt() */
++ if (ops->destroy)
++ ops->destroy(sch);
+ err_out3:
+ dev_put(dev);
+ kfree((char *) sch - sch->padded);
+diff --git a/net/sched/sch_hhf.c b/net/sched/sch_hhf.c
+index 792c6f330f77..c072305068e3 100644
+--- a/net/sched/sch_hhf.c
++++ b/net/sched/sch_hhf.c
+@@ -644,7 +644,9 @@ static int hhf_init(struct Qdisc *sch, struct nlattr *opt)
+ q->hhf_arrays[i] = hhf_zalloc(HHF_ARRAYS_LEN *
+ sizeof(u32));
+ if (!q->hhf_arrays[i]) {
+- hhf_destroy(sch);
++ /* Note: hhf_destroy() will be called
++ * by our caller.
++ */
+ return -ENOMEM;
+ }
+ }
+@@ -655,7 +657,9 @@ static int hhf_init(struct Qdisc *sch, struct nlattr *opt)
+ q->hhf_valid_bits[i] = hhf_zalloc(HHF_ARRAYS_LEN /
+ BITS_PER_BYTE);
+ if (!q->hhf_valid_bits[i]) {
+- hhf_destroy(sch);
++ /* Note: hhf_destroy() will be called
++ * by our caller.
++ */
+ return -ENOMEM;
+ }
+ }
+diff --git a/net/sched/sch_mq.c b/net/sched/sch_mq.c
+index 3e82f047caaf..d9c84328e7eb 100644
+--- a/net/sched/sch_mq.c
++++ b/net/sched/sch_mq.c
+@@ -52,7 +52,7 @@ static int mq_init(struct Qdisc *sch, struct nlattr *opt)
+ /* pre-allocate qdiscs, attachment can't fail */
+ priv->qdiscs = kcalloc(dev->num_tx_queues, sizeof(priv->qdiscs[0]),
+ GFP_KERNEL);
+- if (priv->qdiscs == NULL)
++ if (!priv->qdiscs)
+ return -ENOMEM;
+
+ for (ntx = 0; ntx < dev->num_tx_queues; ntx++) {
+@@ -60,18 +60,14 @@ static int mq_init(struct Qdisc *sch, struct nlattr *opt)
+ qdisc = qdisc_create_dflt(dev_queue, default_qdisc_ops,
+ TC_H_MAKE(TC_H_MAJ(sch->handle),
+ TC_H_MIN(ntx + 1)));
+- if (qdisc == NULL)
+- goto err;
++ if (!qdisc)
++ return -ENOMEM;
+ priv->qdiscs[ntx] = qdisc;
+ qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
+ }
+
+ sch->flags |= TCQ_F_MQROOT;
+ return 0;
+-
+-err:
+- mq_destroy(sch);
+- return -ENOMEM;
+ }
+
+ static void mq_attach(struct Qdisc *sch)
+diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
+index ad70ecf57ce7..66bccc5ff4ea 100644
+--- a/net/sched/sch_mqprio.c
++++ b/net/sched/sch_mqprio.c
+@@ -117,20 +117,17 @@ static int mqprio_init(struct Qdisc *sch, struct nlattr *opt)
+ /* pre-allocate qdisc, attachment can't fail */
+ priv->qdiscs = kcalloc(dev->num_tx_queues, sizeof(priv->qdiscs[0]),
+ GFP_KERNEL);
+- if (priv->qdiscs == NULL) {
+- err = -ENOMEM;
+- goto err;
+- }
++ if (!priv->qdiscs)
++ return -ENOMEM;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ dev_queue = netdev_get_tx_queue(dev, i);
+ qdisc = qdisc_create_dflt(dev_queue, default_qdisc_ops,
+ TC_H_MAKE(TC_H_MAJ(sch->handle),
+ TC_H_MIN(i + 1)));
+- if (qdisc == NULL) {
+- err = -ENOMEM;
+- goto err;
+- }
++ if (!qdisc)
++ return -ENOMEM;
++
+ priv->qdiscs[i] = qdisc;
+ qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
+ }
+@@ -143,7 +140,7 @@ static int mqprio_init(struct Qdisc *sch, struct nlattr *opt)
+ priv->hw_owned = 1;
+ err = dev->netdev_ops->ndo_setup_tc(dev, qopt->num_tc);
+ if (err)
+- goto err;
++ return err;
+ } else {
+ netdev_set_num_tc(dev, qopt->num_tc);
+ for (i = 0; i < qopt->num_tc; i++)
+@@ -157,10 +154,6 @@ static int mqprio_init(struct Qdisc *sch, struct nlattr *opt)
+
+ sch->flags |= TCQ_F_MQROOT;
+ return 0;
+-
+-err:
+- mqprio_destroy(sch);
+- return err;
+ }
+
+ static void mqprio_attach(struct Qdisc *sch)
+diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
+index 4417fb25166f..fdcced6aa71d 100644
+--- a/net/sched/sch_sfq.c
++++ b/net/sched/sch_sfq.c
+@@ -765,9 +765,10 @@ static int sfq_init(struct Qdisc *sch, struct nlattr *opt)
+ q->ht = sfq_alloc(sizeof(q->ht[0]) * q->divisor);
+ q->slots = sfq_alloc(sizeof(q->slots[0]) * q->maxflows);
+ if (!q->ht || !q->slots) {
+- sfq_destroy(sch);
++ /* Note: sfq_destroy() will be called by our caller */
+ return -ENOMEM;
+ }
++
+ for (i = 0; i < q->divisor; i++)
+ q->ht[i] = SFQ_EMPTY_SLOT;
+
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index 6c880961554f..34d3d4056a11 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -239,7 +239,7 @@ static struct sctp_transport *sctp_addr_id2transport(struct sock *sk,
+ union sctp_addr *laddr = (union sctp_addr *)addr;
+ struct sctp_transport *transport;
+
+- if (sctp_verify_addr(sk, laddr, af->sockaddr_len))
++ if (!af || sctp_verify_addr(sk, laddr, af->sockaddr_len))
+ return NULL;
+
+ addr_asoc = sctp_endpoint_lookup_assoc(sctp_sk(sk)->ep,
+diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
+index 03da879008d7..ce6f2bff5208 100644
+--- a/net/unix/af_unix.c
++++ b/net/unix/af_unix.c
+@@ -967,7 +967,8 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ struct dentry *dentry;
+
+ err = -EINVAL;
+- if (sunaddr->sun_family != AF_UNIX)
++ if (addr_len < offsetofend(struct sockaddr_un, sun_family) ||
++ sunaddr->sun_family != AF_UNIX)
+ goto out;
+
+ if (addr_len == sizeof(short)) {
+@@ -1098,6 +1099,10 @@ static int unix_dgram_connect(struct socket *sock, struct sockaddr *addr,
+ unsigned int hash;
+ int err;
+
++ err = -EINVAL;
++ if (alen < offsetofend(struct sockaddr, sa_family))
++ goto out;
++
+ if (addr->sa_family != AF_UNSPEC) {
+ err = unix_mkname(sunaddr, alen, &hash);
+ if (err < 0)
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index 81203bbb2eef..e81e20cbe6dd 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -301,8 +301,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
+ [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
+ [NL80211_ATTR_PID] = { .type = NLA_U32 },
+ [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
+- [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
+- .len = WLAN_PMKID_LEN },
++ [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
+ [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
+ [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
+ [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
+@@ -358,6 +357,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
+ [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
+ [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
+ [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
++ [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
+ [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
+ [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
+ [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
+@@ -5678,6 +5678,10 @@ static int validate_scan_freqs(struct nlattr *freqs)
+ struct nlattr *attr1, *attr2;
+ int n_channels = 0, tmp1, tmp2;
+
++ nla_for_each_nested(attr1, freqs, tmp1)
++ if (nla_len(attr1) != sizeof(u32))
++ return 0;
++
+ nla_for_each_nested(attr1, freqs, tmp1) {
+ n_channels++;
+ /*
+diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
+index 4cd2076ff84b..155070f500aa 100644
+--- a/net/xfrm/xfrm_policy.c
++++ b/net/xfrm/xfrm_policy.c
+@@ -1757,43 +1757,6 @@ free_dst:
+ goto out;
+ }
+
+-#ifdef CONFIG_XFRM_SUB_POLICY
+-static int xfrm_dst_alloc_copy(void **target, const void *src, int size)
+-{
+- if (!*target) {
+- *target = kmalloc(size, GFP_ATOMIC);
+- if (!*target)
+- return -ENOMEM;
+- }
+-
+- memcpy(*target, src, size);
+- return 0;
+-}
+-#endif
+-
+-static int xfrm_dst_update_parent(struct dst_entry *dst,
+- const struct xfrm_selector *sel)
+-{
+-#ifdef CONFIG_XFRM_SUB_POLICY
+- struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
+- return xfrm_dst_alloc_copy((void **)&(xdst->partner),
+- sel, sizeof(*sel));
+-#else
+- return 0;
+-#endif
+-}
+-
+-static int xfrm_dst_update_origin(struct dst_entry *dst,
+- const struct flowi *fl)
+-{
+-#ifdef CONFIG_XFRM_SUB_POLICY
+- struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
+- return xfrm_dst_alloc_copy((void **)&(xdst->origin), fl, sizeof(*fl));
+-#else
+- return 0;
+-#endif
+-}
+-
+ static int xfrm_expand_policies(const struct flowi *fl, u16 family,
+ struct xfrm_policy **pols,
+ int *num_pols, int *num_xfrms)
+@@ -1865,16 +1828,6 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
+
+ xdst = (struct xfrm_dst *)dst;
+ xdst->num_xfrms = err;
+- if (num_pols > 1)
+- err = xfrm_dst_update_parent(dst, &pols[1]->selector);
+- else
+- err = xfrm_dst_update_origin(dst, fl);
+- if (unlikely(err)) {
+- dst_free(dst);
+- XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTBUNDLECHECKERROR);
+- return ERR_PTR(err);
+- }
+-
+ xdst->num_pols = num_pols;
+ memcpy(xdst->pols, pols, sizeof(struct xfrm_policy *) * num_pols);
+ xdst->policy_genid = atomic_read(&pols[0]->genid);
+diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
+index c5ec977b9c37..928c1cf8606b 100755
+--- a/scripts/checkpatch.pl
++++ b/scripts/checkpatch.pl
+@@ -3085,7 +3085,7 @@ sub process {
+ $fixedline =~ s/\s*=\s*$/ = {/;
+ fix_insert_line($fixlinenr, $fixedline);
+ $fixedline = $line;
+- $fixedline =~ s/^(.\s*){\s*/$1/;
++ $fixedline =~ s/^(.\s*)\{\s*/$1/;
+ fix_insert_line($fixlinenr, $fixedline);
+ }
+ }
+@@ -3435,7 +3435,7 @@ sub process {
+ my $fixedline = rtrim($prevrawline) . " {";
+ fix_insert_line($fixlinenr, $fixedline);
+ $fixedline = $rawline;
+- $fixedline =~ s/^(.\s*){\s*/$1\t/;
++ $fixedline =~ s/^(.\s*)\{\s*/$1\t/;
+ if ($fixedline !~ /^\+\s*$/) {
+ fix_insert_line($fixlinenr, $fixedline);
+ }
+@@ -3924,7 +3924,7 @@ sub process {
+ if (ERROR("SPACING",
+ "space required before the open brace '{'\n" . $herecurr) &&
+ $fix) {
+- $fixed[$fixlinenr] =~ s/^(\+.*(?:do|\))){/$1 {/;
++ $fixed[$fixlinenr] =~ s/^(\+.*(?:do|\)))\{/$1 {/;
+ }
+ }
+
+diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
+index 0a374a2ce030..8e1c0099bb66 100644
+--- a/security/keys/encrypted-keys/encrypted.c
++++ b/security/keys/encrypted-keys/encrypted.c
+@@ -428,7 +428,7 @@ static int init_blkcipher_desc(struct blkcipher_desc *desc, const u8 *key,
+ static struct key *request_master_key(struct encrypted_key_payload *epayload,
+ u8 **master_key, size_t *master_keylen)
+ {
+- struct key *mkey = NULL;
++ struct key *mkey = ERR_PTR(-EINVAL);
+
+ if (!strncmp(epayload->master_desc, KEY_TRUSTED_PREFIX,
+ KEY_TRUSTED_PREFIX_LEN)) {
+diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
+index 0fda7b4901dd..e998aaf14338 100644
+--- a/sound/pci/hda/hda_generic.c
++++ b/sound/pci/hda/hda_generic.c
+@@ -3188,6 +3188,7 @@ static int check_dyn_adc_switch(struct hda_codec *codec)
+ spec->input_paths[i][nums]);
+ spec->input_paths[i][nums] =
+ spec->input_paths[i][n];
++ spec->input_paths[i][n] = 0;
+ }
+ }
+ nums++;
+diff --git a/tools/lib/lockdep/uinclude/linux/lockdep.h b/tools/lib/lockdep/uinclude/linux/lockdep.h
+index c1552c28507e..908a9c6fecf0 100644
+--- a/tools/lib/lockdep/uinclude/linux/lockdep.h
++++ b/tools/lib/lockdep/uinclude/linux/lockdep.h
+@@ -8,7 +8,7 @@
+ #include <linux/utsname.h>
+
+
+-#define MAX_LOCK_DEPTH 2000UL
++#define MAX_LOCK_DEPTH 255UL
+
+ #define asmlinkage
+ #define __visible
+diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
+index 58f10b8e6ff2..7ee9c19e8466 100644
+--- a/tools/perf/builtin-script.c
++++ b/tools/perf/builtin-script.c
+@@ -1061,21 +1061,19 @@ static int is_directory(const char *base_path, const struct dirent *dent)
+ return S_ISDIR(st.st_mode);
+ }
+
+-#define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
+- while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
+- lang_next) \
+- if ((lang_dirent.d_type == DT_DIR || \
+- (lang_dirent.d_type == DT_UNKNOWN && \
+- is_directory(scripts_path, &lang_dirent))) && \
+- (strcmp(lang_dirent.d_name, ".")) && \
+- (strcmp(lang_dirent.d_name, "..")))
+-
+-#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
+- while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
+- script_next) \
+- if (script_dirent.d_type != DT_DIR && \
+- (script_dirent.d_type != DT_UNKNOWN || \
+- !is_directory(lang_path, &script_dirent)))
++#define for_each_lang(scripts_path, scripts_dir, lang_dirent) \
++ while ((lang_dirent = readdir(scripts_dir)) != NULL) \
++ if ((lang_dirent->d_type == DT_DIR || \
++ (lang_dirent->d_type == DT_UNKNOWN && \
++ is_directory(scripts_path, lang_dirent))) && \
++ (strcmp(lang_dirent->d_name, ".")) && \
++ (strcmp(lang_dirent->d_name, "..")))
++
++#define for_each_script(lang_path, lang_dir, script_dirent) \
++ while ((script_dirent = readdir(lang_dir)) != NULL) \
++ if (script_dirent->d_type != DT_DIR && \
++ (script_dirent->d_type != DT_UNKNOWN || \
++ !is_directory(lang_path, script_dirent)))
+
+
+ #define RECORD_SUFFIX "-record"
+@@ -1221,7 +1219,7 @@ static int list_available_scripts(const struct option *opt __maybe_unused,
+ const char *s __maybe_unused,
+ int unset __maybe_unused)
+ {
+- struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
++ struct dirent *script_dirent, *lang_dirent;
+ char scripts_path[MAXPATHLEN];
+ DIR *scripts_dir, *lang_dir;
+ char script_path[MAXPATHLEN];
+@@ -1236,19 +1234,19 @@ static int list_available_scripts(const struct option *opt __maybe_unused,
+ if (!scripts_dir)
+ return -1;
+
+- for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
++ for_each_lang(scripts_path, scripts_dir, lang_dirent) {
+ snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
+- lang_dirent.d_name);
++ lang_dirent->d_name);
+ lang_dir = opendir(lang_path);
+ if (!lang_dir)
+ continue;
+
+- for_each_script(lang_path, lang_dir, script_dirent, script_next) {
+- script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
++ for_each_script(lang_path, lang_dir, script_dirent) {
++ script_root = get_script_root(script_dirent, REPORT_SUFFIX);
+ if (script_root) {
+ desc = script_desc__findnew(script_root);
+ snprintf(script_path, MAXPATHLEN, "%s/%s",
+- lang_path, script_dirent.d_name);
++ lang_path, script_dirent->d_name);
+ read_script_info(desc, script_path);
+ free(script_root);
+ }
+@@ -1336,7 +1334,7 @@ static int check_ev_match(char *dir_name, char *scriptname,
+ */
+ int find_scripts(char **scripts_array, char **scripts_path_array)
+ {
+- struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
++ struct dirent *script_dirent, *lang_dirent;
+ char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
+ DIR *scripts_dir, *lang_dir;
+ struct perf_session *session;
+@@ -1359,9 +1357,9 @@ int find_scripts(char **scripts_array, char **scripts_path_array)
+ return -1;
+ }
+
+- for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
++ for_each_lang(scripts_path, scripts_dir, lang_dirent) {
+ snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
+- lang_dirent.d_name);
++ lang_dirent->d_name);
+ #ifdef NO_LIBPERL
+ if (strstr(lang_path, "perl"))
+ continue;
+@@ -1375,16 +1373,16 @@ int find_scripts(char **scripts_array, char **scripts_path_array)
+ if (!lang_dir)
+ continue;
+
+- for_each_script(lang_path, lang_dir, script_dirent, script_next) {
++ for_each_script(lang_path, lang_dir, script_dirent) {
+ /* Skip those real time scripts: xxxtop.p[yl] */
+- if (strstr(script_dirent.d_name, "top."))
++ if (strstr(script_dirent->d_name, "top."))
+ continue;
+ sprintf(scripts_path_array[i], "%s/%s", lang_path,
+- script_dirent.d_name);
+- temp = strchr(script_dirent.d_name, '.');
++ script_dirent->d_name);
++ temp = strchr(script_dirent->d_name, '.');
+ snprintf(scripts_array[i],
+- (temp - script_dirent.d_name) + 1,
+- "%s", script_dirent.d_name);
++ (temp - script_dirent->d_name) + 1,
++ "%s", script_dirent->d_name);
+
+ if (check_ev_match(lang_path,
+ scripts_array[i], session))
+@@ -1402,7 +1400,7 @@ int find_scripts(char **scripts_array, char **scripts_path_array)
+
+ static char *get_script_path(const char *script_root, const char *suffix)
+ {
+- struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
++ struct dirent *script_dirent, *lang_dirent;
+ char scripts_path[MAXPATHLEN];
+ char script_path[MAXPATHLEN];
+ DIR *scripts_dir, *lang_dir;
+@@ -1415,21 +1413,21 @@ static char *get_script_path(const char *script_root, const char *suffix)
+ if (!scripts_dir)
+ return NULL;
+
+- for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
++ for_each_lang(scripts_path, scripts_dir, lang_dirent) {
+ snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
+- lang_dirent.d_name);
++ lang_dirent->d_name);
+ lang_dir = opendir(lang_path);
+ if (!lang_dir)
+ continue;
+
+- for_each_script(lang_path, lang_dir, script_dirent, script_next) {
+- __script_root = get_script_root(&script_dirent, suffix);
++ for_each_script(lang_path, lang_dir, script_dirent) {
++ __script_root = get_script_root(script_dirent, suffix);
+ if (__script_root && !strcmp(script_root, __script_root)) {
+ free(__script_root);
+ closedir(lang_dir);
+ closedir(scripts_dir);
+ snprintf(script_path, MAXPATHLEN, "%s/%s",
+- lang_path, script_dirent.d_name);
++ lang_path, script_dirent->d_name);
+ return strdup(script_path);
+ }
+ free(__script_root);
+diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
+index 6a4d5d41c671..65e138019b99 100644
+--- a/tools/perf/builtin-top.c
++++ b/tools/perf/builtin-top.c
+@@ -627,7 +627,7 @@ repeat:
+ case -1:
+ if (errno == EINTR)
+ continue;
+- /* Fall trhu */
++ __fallthrough;
+ default:
+ c = getc(stdin);
+ tcsetattr(0, TCSAFLUSH, &save);
+diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
+index e122970361f2..09b9b74e4c1b 100644
+--- a/tools/perf/builtin-trace.c
++++ b/tools/perf/builtin-trace.c
+@@ -1404,6 +1404,7 @@ static int trace__process_event(struct trace *trace, struct machine *machine,
+ color_fprintf(trace->output, PERF_COLOR_RED,
+ "LOST %" PRIu64 " events!\n", event->lost.lost);
+ ret = machine__process_lost_event(machine, event, sample);
++ break;
+ default:
+ ret = machine__process_event(machine, event, sample);
+ break;
+diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
+index 3de744961739..024583871237 100644
+--- a/tools/perf/tests/parse-events.c
++++ b/tools/perf/tests/parse-events.c
+@@ -1677,15 +1677,14 @@ static int test_pmu_events(void)
+ }
+
+ while (!ret && (ent = readdir(dir))) {
+-#define MAX_NAME 100
+ struct evlist_test e;
+- char name[MAX_NAME];
++ char name[2 * NAME_MAX + 1 + 12 + 3];
+
+ if (!strcmp(ent->d_name, ".") ||
+ !strcmp(ent->d_name, ".."))
+ continue;
+
+- snprintf(name, MAX_NAME, "cpu/event=%s/u", ent->d_name);
++ snprintf(name, sizeof(name), "cpu/event=%s/u", ent->d_name);
+
+ e.name = name;
+ e.check = test__checkevent_pmu_events;
+@@ -1693,11 +1692,10 @@ static int test_pmu_events(void)
+ ret = test_event(&e);
+ if (ret)
+ break;
+- snprintf(name, MAX_NAME, "%s:u,cpu/event=%s/u", ent->d_name, ent->d_name);
++ snprintf(name, sizeof(name), "%s:u,cpu/event=%s/u", ent->d_name, ent->d_name);
+ e.name = name;
+ e.check = test__checkevent_pmu_events_mix;
+ ret = test_event(&e);
+-#undef MAX_NAME
+ }
+
+ closedir(dir);
+diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
+index e5250eb2dd57..96b5638c3342 100644
+--- a/tools/perf/ui/browsers/annotate.c
++++ b/tools/perf/ui/browsers/annotate.c
+@@ -716,11 +716,11 @@ static int annotate_browser__run(struct annotate_browser *browser,
+ nd = browser->curr_hot;
+ break;
+ case K_UNTAB:
+- if (nd != NULL)
++ if (nd != NULL) {
+ nd = rb_next(nd);
+ if (nd == NULL)
+ nd = rb_first(&browser->entries);
+- else
++ } else
+ nd = browser->curr_hot;
+ break;
+ case K_F1:
+diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
+index d18a59ab4ed5..12ad79717d94 100644
+--- a/tools/perf/util/event.c
++++ b/tools/perf/util/event.c
+@@ -385,7 +385,7 @@ static int __event__synthesize_thread(union perf_event *comm_event,
+ {
+ char filename[PATH_MAX];
+ DIR *tasks;
+- struct dirent dirent, *next;
++ struct dirent *dirent;
+ pid_t tgid, ppid;
+ int rc = 0;
+
+@@ -413,11 +413,11 @@ static int __event__synthesize_thread(union perf_event *comm_event,
+ return 0;
+ }
+
+- while (!readdir_r(tasks, &dirent, &next) && next) {
++ while ((dirent = readdir(tasks)) != NULL) {
+ char *end;
+ pid_t _pid;
+
+- _pid = strtol(dirent.d_name, &end, 10);
++ _pid = strtol(dirent->d_name, &end, 10);
+ if (*end)
+ continue;
+
+@@ -523,7 +523,7 @@ int perf_event__synthesize_threads(struct perf_tool *tool,
+ {
+ DIR *proc;
+ char proc_path[PATH_MAX];
+- struct dirent dirent, *next;
++ struct dirent *dirent;
+ union perf_event *comm_event, *mmap_event, *fork_event;
+ int err = -1;
+
+@@ -548,9 +548,9 @@ int perf_event__synthesize_threads(struct perf_tool *tool,
+ if (proc == NULL)
+ goto out_free_fork;
+
+- while (!readdir_r(proc, &dirent, &next) && next) {
++ while ((dirent = readdir(proc)) != NULL) {
+ char *end;
+- pid_t pid = strtol(dirent.d_name, &end, 10);
++ pid_t pid = strtol(dirent->d_name, &end, 10);
+
+ if (*end) /* only interested in proper numerical dirents */
+ continue;
+diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
+index 8b02a4355659..3297d7e85dd7 100644
+--- a/tools/perf/util/pmu.c
++++ b/tools/perf/util/pmu.c
+@@ -148,7 +148,7 @@ static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *n
+ if (fd == -1)
+ return -1;
+
+- sret = read(fd, alias->unit, UNIT_MAX_LEN);
++ sret = read(fd, alias->unit, UNIT_MAX_LEN);
+ if (sret < 0)
+ goto error;
+
+diff --git a/tools/perf/util/scripting-engines/Build b/tools/perf/util/scripting-engines/Build
+index 6516e220c247..82d28c67e0f3 100644
+--- a/tools/perf/util/scripting-engines/Build
++++ b/tools/perf/util/scripting-engines/Build
+@@ -1,6 +1,6 @@
+ libperf-$(CONFIG_LIBPERL) += trace-event-perl.o
+ libperf-$(CONFIG_LIBPYTHON) += trace-event-python.o
+
+-CFLAGS_trace-event-perl.o += $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-shadow -Wno-undef -Wno-switch-default
++CFLAGS_trace-event-perl.o += $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-shadow -Wno-nested-externs -Wno-undef -Wno-switch-default
+
+ CFLAGS_trace-event-python.o += $(PYTHON_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-shadow
+diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c
+index 6afd6106ceb5..3b2d7fdde6a6 100644
+--- a/tools/perf/util/string.c
++++ b/tools/perf/util/string.c
+@@ -21,6 +21,8 @@ s64 perf_atoll(const char *str)
+ case 'b': case 'B':
+ if (*p)
+ goto out_err;
++
++ __fallthrough;
+ case '\0':
+ return length;
+ default:
+diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
+index 1c8fbc9588c5..c0b7e17e3167 100644
+--- a/tools/perf/util/thread.c
++++ b/tools/perf/util/thread.c
+@@ -217,7 +217,7 @@ void thread__find_cpumode_addr_location(struct thread *thread,
+ struct addr_location *al)
+ {
+ size_t i;
+- const u8 const cpumodes[] = {
++ const u8 cpumodes[] = {
+ PERF_RECORD_MISC_USER,
+ PERF_RECORD_MISC_KERNEL,
+ PERF_RECORD_MISC_GUEST_USER,
+diff --git a/tools/perf/util/thread_map.c b/tools/perf/util/thread_map.c
+index f93b9734735b..905a55401842 100644
+--- a/tools/perf/util/thread_map.c
++++ b/tools/perf/util/thread_map.c
+@@ -63,7 +63,7 @@ struct thread_map *thread_map__new_by_uid(uid_t uid)
+ {
+ DIR *proc;
+ int max_threads = 32, items, i;
+- char path[256];
++ char path[NAME_MAX + 1 + 6];
+ struct dirent dirent, *next, **namelist = NULL;
+ struct thread_map *threads = malloc(sizeof(*threads) +
+ max_threads * sizeof(pid_t));
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-04-14 19:17 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-04-14 19:17 UTC (permalink / raw
To: gentoo-commits
commit: b8d213a1983935e8741527f7a87ff63f1a44e648
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Apr 14 19:17:28 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Apr 14 19:17:28 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=b8d213a1
Fix for CVE-2016-10229. Unsafe second checksum calculation in udp.c. See bug #615480.
0000_README | 4 +
...udp-prop-suprt-MSG-PEEK-wth-trunc-buffers.patch | 94 ++++++++++++++++++++++
2 files changed, 98 insertions(+)
diff --git a/0000_README b/0000_README
index 80a401b..c91ff69 100644
--- a/0000_README
+++ b/0000_README
@@ -211,6 +211,10 @@ Patch: 1520_CVE-2017-6074-dccp-skb-freeing-fix.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=610600
Desc: dccp: fix freeing skb too early for IPV6_RECVPKTINFO. CVE-2017-6074
+Patch: 1530_udp-prop-suprt-MSG-PEEK-wth-trunc-buffers.patch
+From: https://bugs.gentoo.org/show_bug.cgi?id=615480
+Desc: Fixes CVE-2016-10229. Unsafe second checksum calculation in udp.c
+
Patch: 1800_fix-lru-cache-add-oom-regression.patch
From: http://thread.gmane.org/gmane.linux.kernel.stable/184384
Desc: Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
diff --git a/1530_udp-prop-suprt-MSG-PEEK-wth-trunc-buffers.patch b/1530_udp-prop-suprt-MSG-PEEK-wth-trunc-buffers.patch
new file mode 100644
index 0000000..1d12eaa
--- /dev/null
+++ b/1530_udp-prop-suprt-MSG-PEEK-wth-trunc-buffers.patch
@@ -0,0 +1,94 @@
+From 197c949e7798fbf28cfadc69d9ca0c2abbf93191 Mon Sep 17 00:00:00 2001
+From: Eric Dumazet <edumazet@google.com>
+Date: Wed, 30 Dec 2015 08:51:12 -0500
+Subject: udp: properly support MSG_PEEK with truncated buffers
+
+Backport of this upstream commit into stable kernels :
+89c22d8c3b27 ("net: Fix skb csum races when peeking")
+exposed a bug in udp stack vs MSG_PEEK support, when user provides
+a buffer smaller than skb payload.
+
+In this case,
+skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr),
+ msg->msg_iov);
+returns -EFAULT.
+
+This bug does not happen in upstream kernels since Al Viro did a great
+job to replace this into :
+skb_copy_and_csum_datagram_msg(skb, sizeof(struct udphdr), msg);
+This variant is safe vs short buffers.
+
+For the time being, instead reverting Herbert Xu patch and add back
+skb->ip_summed invalid changes, simply store the result of
+udp_lib_checksum_complete() so that we avoid computing the checksum a
+second time, and avoid the problematic
+skb_copy_and_csum_datagram_iovec() call.
+
+This patch can be applied on recent kernels as it avoids a double
+checksumming, then backported to stable kernels as a bug fix.
+
+Signed-off-by: Eric Dumazet <edumazet@google.com>
+Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ net/ipv4/udp.c | 6 ++++--
+ net/ipv6/udp.c | 6 ++++--
+ 2 files changed, 8 insertions(+), 4 deletions(-)
+
+diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
+index 8841e98..ac14ae4 100644
+--- a/net/ipv4/udp.c
++++ b/net/ipv4/udp.c
+@@ -1271,6 +1271,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,
+ int peeked, off = 0;
+ int err;
+ int is_udplite = IS_UDPLITE(sk);
++ bool checksum_valid = false;
+ bool slow;
+
+ if (flags & MSG_ERRQUEUE)
+@@ -1296,11 +1297,12 @@ try_again:
+ */
+
+ if (copied < ulen || UDP_SKB_CB(skb)->partial_cov) {
+- if (udp_lib_checksum_complete(skb))
++ checksum_valid = !udp_lib_checksum_complete(skb);
++ if (!checksum_valid)
+ goto csum_copy_err;
+ }
+
+- if (skb_csum_unnecessary(skb))
++ if (checksum_valid || skb_csum_unnecessary(skb))
+ err = skb_copy_datagram_msg(skb, sizeof(struct udphdr),
+ msg, copied);
+ else {
+diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
+index 9da3287..00775ee 100644
+--- a/net/ipv6/udp.c
++++ b/net/ipv6/udp.c
+@@ -402,6 +402,7 @@ int udpv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
+ int peeked, off = 0;
+ int err;
+ int is_udplite = IS_UDPLITE(sk);
++ bool checksum_valid = false;
+ int is_udp4;
+ bool slow;
+
+@@ -433,11 +434,12 @@ try_again:
+ */
+
+ if (copied < ulen || UDP_SKB_CB(skb)->partial_cov) {
+- if (udp_lib_checksum_complete(skb))
++ checksum_valid = !udp_lib_checksum_complete(skb);
++ if (!checksum_valid)
+ goto csum_copy_err;
+ }
+
+- if (skb_csum_unnecessary(skb))
++ if (checksum_valid || skb_csum_unnecessary(skb))
+ err = skb_copy_datagram_msg(skb, sizeof(struct udphdr),
+ msg, copied);
+ else {
+--
+cgit v1.1
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-03-14 11:39 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-03-14 11:39 UTC (permalink / raw
To: gentoo-commits
commit: 0ad43040a8e5b8482af4024d8a4d0128942d4a6c
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Mar 14 11:39:22 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Mar 14 11:39:22 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=0ad43040
Linux patch 4.1.39
0000_README | 4 +
1038_linux-4.1.39.patch | 4379 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 4383 insertions(+)
diff --git a/0000_README b/0000_README
index 9c6c940..80a401b 100644
--- a/0000_README
+++ b/0000_README
@@ -195,6 +195,10 @@ Patch: 1037_linux-4.1.38.patch
From: http://www.kernel.org
Desc: Linux 4.1.38
+Patch: 1038_linux-4.1.39.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.39
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1038_linux-4.1.39.patch b/1038_linux-4.1.39.patch
new file mode 100644
index 0000000..8c4add5
--- /dev/null
+++ b/1038_linux-4.1.39.patch
@@ -0,0 +1,4379 @@
+diff --git a/Makefile b/Makefile
+index 1aba5352e0bd..88cc36d6b469 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 38
++SUBLEVEL = 39
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arc/kernel/unaligned.c b/arch/arc/kernel/unaligned.c
+index 74db59b6f392..86970eef24e5 100644
+--- a/arch/arc/kernel/unaligned.c
++++ b/arch/arc/kernel/unaligned.c
+@@ -241,8 +241,9 @@ int misaligned_fixup(unsigned long address, struct pt_regs *regs,
+ if (state.fault)
+ goto fault;
+
++ /* clear any remanants of delay slot */
+ if (delay_mode(regs)) {
+- regs->ret = regs->bta;
++ regs->ret = regs->bta & ~1U;
+ regs->status32 &= ~STATUS_DE_MASK;
+ } else {
+ regs->ret += state.instr_len;
+diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
+index 4f935ad9f27b..6881757b03e8 100644
+--- a/arch/arm/boot/dts/da850-evm.dts
++++ b/arch/arm/boot/dts/da850-evm.dts
+@@ -85,6 +85,7 @@
+ #size-cells = <1>;
+ compatible = "m25p64";
+ spi-max-frequency = <30000000>;
++ m25p,fast-read;
+ reg = <0>;
+ partition@0 {
+ label = "U-Boot-SPL";
+diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
+index 85e374f873ac..e9d04f475929 100644
+--- a/arch/arm/include/asm/cputype.h
++++ b/arch/arm/include/asm/cputype.h
+@@ -81,6 +81,9 @@
+ #define ARM_CPU_XSCALE_ARCH_V2 0x4000
+ #define ARM_CPU_XSCALE_ARCH_V3 0x6000
+
++/* Qualcomm implemented cores */
++#define ARM_CPU_PART_SCORPION 0x510002d0
++
+ extern unsigned int processor_id;
+
+ #ifdef CONFIG_CPU_CP15
+diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c
+index dc7d0a95bd36..c02c06b1f755 100644
+--- a/arch/arm/kernel/hw_breakpoint.c
++++ b/arch/arm/kernel/hw_breakpoint.c
+@@ -1067,6 +1067,22 @@ static int __init arch_hw_breakpoint_init(void)
+ return 0;
+ }
+
++ /*
++ * Scorpion CPUs (at least those in APQ8060) seem to set DBGPRSR.SPD
++ * whenever a WFI is issued, even if the core is not powered down, in
++ * violation of the architecture. When DBGPRSR.SPD is set, accesses to
++ * breakpoint and watchpoint registers are treated as undefined, so
++ * this results in boot time and runtime failures when these are
++ * accessed and we unexpectedly take a trap.
++ *
++ * It's not clear if/how this can be worked around, so we blacklist
++ * Scorpion CPUs to avoid these issues.
++ */
++ if (read_cpuid_part() == ARM_CPU_PART_SCORPION) {
++ pr_info("Scorpion CPU detected. Hardware breakpoints and watchpoints disabled\n");
++ return 0;
++ }
++
+ has_ossr = core_has_os_save_restore();
+
+ /* Determine how many BRPs/WRPs are available. */
+diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
+index 4d9375814b53..d54c53b7ab63 100644
+--- a/arch/arm/kernel/ptrace.c
++++ b/arch/arm/kernel/ptrace.c
+@@ -600,7 +600,7 @@ static int gpr_set(struct task_struct *target,
+ const void *kbuf, const void __user *ubuf)
+ {
+ int ret;
+- struct pt_regs newregs;
++ struct pt_regs newregs = *task_pt_regs(target);
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &newregs,
+diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S
+index 8ecfd15c3a02..df73914e81c8 100644
+--- a/arch/arm/lib/getuser.S
++++ b/arch/arm/lib/getuser.S
+@@ -67,7 +67,7 @@ ENTRY(__get_user_4)
+ ENDPROC(__get_user_4)
+
+ ENTRY(__get_user_8)
+- check_uaccess r0, 8, r1, r2, __get_user_bad
++ check_uaccess r0, 8, r1, r2, __get_user_bad8
+ #ifdef CONFIG_THUMB2_KERNEL
+ 5: TUSER(ldr) r2, [r0]
+ 6: TUSER(ldr) r3, [r0, #4]
+diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
+index 45ce065e7170..1180a75cd707 100644
+--- a/arch/arm/mach-davinci/da850.c
++++ b/arch/arm/mach-davinci/da850.c
+@@ -297,6 +297,16 @@ static struct clk emac_clk = {
+ .gpsc = 1,
+ };
+
++/*
++ * In order to avoid adding the emac_clk to the clock lookup table twice (and
++ * screwing up the linked list in the process) create a separate clock for
++ * mdio inheriting the rate from emac_clk.
++ */
++static struct clk mdio_clk = {
++ .name = "mdio",
++ .parent = &emac_clk,
++};
++
+ static struct clk mcasp_clk = {
+ .name = "mcasp",
+ .parent = &pll0_sysclk2,
+@@ -461,7 +471,7 @@ static struct clk_lookup da850_clks[] = {
+ CLK(NULL, "arm", &arm_clk),
+ CLK(NULL, "rmii", &rmii_clk),
+ CLK("davinci_emac.1", NULL, &emac_clk),
+- CLK("davinci_mdio.0", "fck", &emac_clk),
++ CLK("davinci_mdio.0", "fck", &mdio_clk),
+ CLK("davinci-mcasp.0", NULL, &mcasp_clk),
+ CLK("da8xx_lcdc.0", "fck", &lcdc_clk),
+ CLK("da830-mmc.0", NULL, &mmcsd0_clk),
+diff --git a/arch/arm64/crypto/aes-modes.S b/arch/arm64/crypto/aes-modes.S
+index f6e372c528eb..94b5669ee4d3 100644
+--- a/arch/arm64/crypto/aes-modes.S
++++ b/arch/arm64/crypto/aes-modes.S
+@@ -193,15 +193,16 @@ AES_ENTRY(aes_cbc_encrypt)
+ cbz w6, .Lcbcencloop
+
+ ld1 {v0.16b}, [x5] /* get iv */
+- enc_prepare w3, x2, x5
++ enc_prepare w3, x2, x6
+
+ .Lcbcencloop:
+ ld1 {v1.16b}, [x1], #16 /* get next pt block */
+ eor v0.16b, v0.16b, v1.16b /* ..and xor with iv */
+- encrypt_block v0, w3, x2, x5, w6
++ encrypt_block v0, w3, x2, x6, w7
+ st1 {v0.16b}, [x0], #16
+ subs w4, w4, #1
+ bne .Lcbcencloop
++ st1 {v0.16b}, [x5] /* return iv */
+ ret
+ AES_ENDPROC(aes_cbc_encrypt)
+
+@@ -211,7 +212,7 @@ AES_ENTRY(aes_cbc_decrypt)
+ cbz w6, .LcbcdecloopNx
+
+ ld1 {v7.16b}, [x5] /* get iv */
+- dec_prepare w3, x2, x5
++ dec_prepare w3, x2, x6
+
+ .LcbcdecloopNx:
+ #if INTERLEAVE >= 2
+@@ -248,7 +249,7 @@ AES_ENTRY(aes_cbc_decrypt)
+ .Lcbcdecloop:
+ ld1 {v1.16b}, [x1], #16 /* get next ct block */
+ mov v0.16b, v1.16b /* ...and copy to v0 */
+- decrypt_block v0, w3, x2, x5, w6
++ decrypt_block v0, w3, x2, x6, w7
+ eor v0.16b, v0.16b, v7.16b /* xor with iv => pt */
+ mov v7.16b, v1.16b /* ct is next iv */
+ st1 {v0.16b}, [x0], #16
+@@ -256,6 +257,7 @@ AES_ENTRY(aes_cbc_decrypt)
+ bne .Lcbcdecloop
+ .Lcbcdecout:
+ FRAME_POP
++ st1 {v7.16b}, [x5] /* return iv */
+ ret
+ AES_ENDPROC(aes_cbc_decrypt)
+
+@@ -267,24 +269,15 @@ AES_ENDPROC(aes_cbc_decrypt)
+
+ AES_ENTRY(aes_ctr_encrypt)
+ FRAME_PUSH
+- cbnz w6, .Lctrfirst /* 1st time around? */
+- umov x5, v4.d[1] /* keep swabbed ctr in reg */
+- rev x5, x5
+-#if INTERLEAVE >= 2
+- cmn w5, w4 /* 32 bit overflow? */
+- bcs .Lctrinc
+- add x5, x5, #1 /* increment BE ctr */
+- b .LctrincNx
+-#else
+- b .Lctrinc
+-#endif
+-.Lctrfirst:
++ cbz w6, .Lctrnotfirst /* 1st time around? */
+ enc_prepare w3, x2, x6
+ ld1 {v4.16b}, [x5]
+- umov x5, v4.d[1] /* keep swabbed ctr in reg */
+- rev x5, x5
++
++.Lctrnotfirst:
++ umov x8, v4.d[1] /* keep swabbed ctr in reg */
++ rev x8, x8
+ #if INTERLEAVE >= 2
+- cmn w5, w4 /* 32 bit overflow? */
++ cmn w8, w4 /* 32 bit overflow? */
+ bcs .Lctrloop
+ .LctrloopNx:
+ subs w4, w4, #INTERLEAVE
+@@ -292,11 +285,11 @@ AES_ENTRY(aes_ctr_encrypt)
+ #if INTERLEAVE == 2
+ mov v0.8b, v4.8b
+ mov v1.8b, v4.8b
+- rev x7, x5
+- add x5, x5, #1
++ rev x7, x8
++ add x8, x8, #1
+ ins v0.d[1], x7
+- rev x7, x5
+- add x5, x5, #1
++ rev x7, x8
++ add x8, x8, #1
+ ins v1.d[1], x7
+ ld1 {v2.16b-v3.16b}, [x1], #32 /* get 2 input blocks */
+ do_encrypt_block2x
+@@ -305,7 +298,7 @@ AES_ENTRY(aes_ctr_encrypt)
+ st1 {v0.16b-v1.16b}, [x0], #32
+ #else
+ ldr q8, =0x30000000200000001 /* addends 1,2,3[,0] */
+- dup v7.4s, w5
++ dup v7.4s, w8
+ mov v0.16b, v4.16b
+ add v7.4s, v7.4s, v8.4s
+ mov v1.16b, v4.16b
+@@ -323,18 +316,12 @@ AES_ENTRY(aes_ctr_encrypt)
+ eor v2.16b, v7.16b, v2.16b
+ eor v3.16b, v5.16b, v3.16b
+ st1 {v0.16b-v3.16b}, [x0], #64
+- add x5, x5, #INTERLEAVE
++ add x8, x8, #INTERLEAVE
+ #endif
+- cbz w4, .LctroutNx
+-.LctrincNx:
+- rev x7, x5
++ rev x7, x8
+ ins v4.d[1], x7
++ cbz w4, .Lctrout
+ b .LctrloopNx
+-.LctroutNx:
+- sub x5, x5, #1
+- rev x7, x5
+- ins v4.d[1], x7
+- b .Lctrout
+ .Lctr1x:
+ adds w4, w4, #INTERLEAVE
+ beq .Lctrout
+@@ -342,30 +329,39 @@ AES_ENTRY(aes_ctr_encrypt)
+ .Lctrloop:
+ mov v0.16b, v4.16b
+ encrypt_block v0, w3, x2, x6, w7
++
++ adds x8, x8, #1 /* increment BE ctr */
++ rev x7, x8
++ ins v4.d[1], x7
++ bcs .Lctrcarry /* overflow? */
++
++.Lctrcarrydone:
+ subs w4, w4, #1
+ bmi .Lctrhalfblock /* blocks < 0 means 1/2 block */
+ ld1 {v3.16b}, [x1], #16
+ eor v3.16b, v0.16b, v3.16b
+ st1 {v3.16b}, [x0], #16
+- beq .Lctrout
+-.Lctrinc:
+- adds x5, x5, #1 /* increment BE ctr */
+- rev x7, x5
+- ins v4.d[1], x7
+- bcc .Lctrloop /* no overflow? */
+- umov x7, v4.d[0] /* load upper word of ctr */
+- rev x7, x7 /* ... to handle the carry */
+- add x7, x7, #1
+- rev x7, x7
+- ins v4.d[0], x7
+- b .Lctrloop
++ bne .Lctrloop
++
++.Lctrout:
++ st1 {v4.16b}, [x5] /* return next CTR value */
++ FRAME_POP
++ ret
++
+ .Lctrhalfblock:
+ ld1 {v3.8b}, [x1]
+ eor v3.8b, v0.8b, v3.8b
+ st1 {v3.8b}, [x0]
+-.Lctrout:
+ FRAME_POP
+ ret
++
++.Lctrcarry:
++ umov x7, v4.d[0] /* load upper word of ctr */
++ rev x7, x7 /* ... to handle the carry */
++ add x7, x7, #1
++ rev x7, x7
++ ins v4.d[0], x7
++ b .Lctrcarrydone
+ AES_ENDPROC(aes_ctr_encrypt)
+ .ltorg
+
+diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h
+index 6913643bbe54..c136fd53c847 100644
+--- a/arch/arm64/include/uapi/asm/ptrace.h
++++ b/arch/arm64/include/uapi/asm/ptrace.h
+@@ -75,6 +75,7 @@ struct user_fpsimd_state {
+ __uint128_t vregs[32];
+ __u32 fpsr;
+ __u32 fpcr;
++ __u32 __reserved[2];
+ };
+
+ struct user_hwdebug_state {
+diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
+index 7038b9a3b42c..f7738bbc8c3f 100644
+--- a/arch/arm64/kernel/ptrace.c
++++ b/arch/arm64/kernel/ptrace.c
+@@ -450,6 +450,8 @@ static int hw_break_set(struct task_struct *target,
+ /* (address, ctrl) registers */
+ limit = regset->n * regset->size;
+ while (count && offset < limit) {
++ if (count < PTRACE_HBP_ADDR_SZ)
++ return -EINVAL;
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &addr,
+ offset, offset + PTRACE_HBP_ADDR_SZ);
+ if (ret)
+@@ -459,6 +461,8 @@ static int hw_break_set(struct task_struct *target,
+ return ret;
+ offset += PTRACE_HBP_ADDR_SZ;
+
++ if (!count)
++ break;
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &ctrl,
+ offset, offset + PTRACE_HBP_CTRL_SZ);
+ if (ret)
+@@ -495,7 +499,7 @@ static int gpr_set(struct task_struct *target, const struct user_regset *regset,
+ const void *kbuf, const void __user *ubuf)
+ {
+ int ret;
+- struct user_pt_regs newregs;
++ struct user_pt_regs newregs = task_pt_regs(target)->user_regs;
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &newregs, 0, -1);
+ if (ret)
+@@ -525,7 +529,8 @@ static int fpr_set(struct task_struct *target, const struct user_regset *regset,
+ const void *kbuf, const void __user *ubuf)
+ {
+ int ret;
+- struct user_fpsimd_state newstate;
++ struct user_fpsimd_state newstate =
++ target->thread.fpsimd_state.user_fpsimd;
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &newstate, 0, -1);
+ if (ret)
+@@ -549,7 +554,7 @@ static int tls_set(struct task_struct *target, const struct user_regset *regset,
+ const void *kbuf, const void __user *ubuf)
+ {
+ int ret;
+- unsigned long tls;
++ unsigned long tls = target->thread.tp_value;
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &tls, 0, -1);
+ if (ret)
+diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
+index 485fdc462243..02afe4b9755a 100644
+--- a/arch/mips/kvm/mips.c
++++ b/arch/mips/kvm/mips.c
+@@ -322,8 +322,8 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
+ #endif
+
+ /* Invalidate the icache for these ranges */
+- local_flush_icache_range((unsigned long)gebase,
+- (unsigned long)gebase + ALIGN(size, PAGE_SIZE));
++ flush_icache_range((unsigned long)gebase,
++ (unsigned long)gebase + ALIGN(size, PAGE_SIZE));
+
+ /*
+ * Allocate comm page for guest kernel, a TLB will be reserved for
+diff --git a/arch/parisc/include/asm/bitops.h b/arch/parisc/include/asm/bitops.h
+index 3f9406d9b9d6..da87943328a5 100644
+--- a/arch/parisc/include/asm/bitops.h
++++ b/arch/parisc/include/asm/bitops.h
+@@ -6,7 +6,7 @@
+ #endif
+
+ #include <linux/compiler.h>
+-#include <asm/types.h> /* for BITS_PER_LONG/SHIFT_PER_LONG */
++#include <asm/types.h>
+ #include <asm/byteorder.h>
+ #include <asm/barrier.h>
+ #include <linux/atomic.h>
+@@ -17,6 +17,12 @@
+ * to include/asm-i386/bitops.h or kerneldoc
+ */
+
++#if __BITS_PER_LONG == 64
++#define SHIFT_PER_LONG 6
++#else
++#define SHIFT_PER_LONG 5
++#endif
++
+ #define CHOP_SHIFTCOUNT(x) (((unsigned long) (x)) & (BITS_PER_LONG - 1))
+
+
+diff --git a/arch/parisc/include/uapi/asm/bitsperlong.h b/arch/parisc/include/uapi/asm/bitsperlong.h
+index e0a23c7bdd43..07fa7e50bdc0 100644
+--- a/arch/parisc/include/uapi/asm/bitsperlong.h
++++ b/arch/parisc/include/uapi/asm/bitsperlong.h
+@@ -3,10 +3,8 @@
+
+ #if defined(__LP64__)
+ #define __BITS_PER_LONG 64
+-#define SHIFT_PER_LONG 6
+ #else
+ #define __BITS_PER_LONG 32
+-#define SHIFT_PER_LONG 5
+ #endif
+
+ #include <asm-generic/bitsperlong.h>
+diff --git a/arch/parisc/include/uapi/asm/swab.h b/arch/parisc/include/uapi/asm/swab.h
+index e78403b129ef..928e1bbac98f 100644
+--- a/arch/parisc/include/uapi/asm/swab.h
++++ b/arch/parisc/include/uapi/asm/swab.h
+@@ -1,6 +1,7 @@
+ #ifndef _PARISC_SWAB_H
+ #define _PARISC_SWAB_H
+
++#include <asm/bitsperlong.h>
+ #include <linux/types.h>
+ #include <linux/compiler.h>
+
+@@ -38,7 +39,7 @@ static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
+ }
+ #define __arch_swab32 __arch_swab32
+
+-#if BITS_PER_LONG > 32
++#if __BITS_PER_LONG > 32
+ /*
+ ** From "PA-RISC 2.0 Architecture", HP Professional Books.
+ ** See Appendix I page 8 , "Endian Byte Swapping".
+@@ -61,6 +62,6 @@ static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
+ return x;
+ }
+ #define __arch_swab64 __arch_swab64
+-#endif /* BITS_PER_LONG > 32 */
++#endif /* __BITS_PER_LONG > 32 */
+
+ #endif /* _PARISC_SWAB_H */
+diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
+index 6d04c9efb496..0a4f23a070ab 100644
+--- a/arch/powerpc/kernel/eeh_driver.c
++++ b/arch/powerpc/kernel/eeh_driver.c
+@@ -483,7 +483,7 @@ static void *eeh_pe_detach_dev(void *data, void *userdata)
+ static void *__eeh_clear_pe_frozen_state(void *data, void *flag)
+ {
+ struct eeh_pe *pe = (struct eeh_pe *)data;
+- bool *clear_sw_state = flag;
++ bool clear_sw_state = *(bool *)flag;
+ int i, rc = 1;
+
+ for (i = 0; rc && i < 3; i++)
+diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
+index ae97ba211d8e..f409bfc0ae42 100644
+--- a/arch/powerpc/kernel/prom_init.c
++++ b/arch/powerpc/kernel/prom_init.c
+@@ -2633,6 +2633,9 @@ static void __init prom_find_boot_cpu(void)
+
+ cpu_pkg = call_prom("instance-to-package", 1, 1, prom_cpu);
+
++ if (!PHANDLE_VALID(cpu_pkg))
++ return;
++
+ prom_getprop(cpu_pkg, "reg", &rval, sizeof(rval));
+ prom.cpu = be32_to_cpu(rval);
+
+diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c
+index f84eed8243da..1231bff72582 100644
+--- a/arch/tile/kernel/ptrace.c
++++ b/arch/tile/kernel/ptrace.c
+@@ -111,7 +111,7 @@ static int tile_gpr_set(struct task_struct *target,
+ const void *kbuf, const void __user *ubuf)
+ {
+ int ret;
+- struct pt_regs regs;
++ struct pt_regs regs = *task_pt_regs(target);
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, ®s, 0,
+ sizeof(regs));
+diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
+index 41b06fca39f7..606f5fff1989 100644
+--- a/arch/x86/include/asm/kvm_host.h
++++ b/arch/x86/include/asm/kvm_host.h
+@@ -718,7 +718,7 @@ struct kvm_x86_ops {
+ void (*vcpu_put)(struct kvm_vcpu *vcpu);
+
+ void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
+- int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
++ int (*get_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
+ int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
+ u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
+ void (*get_segment)(struct kvm_vcpu *vcpu,
+@@ -938,7 +938,7 @@ static inline int emulate_instruction(struct kvm_vcpu *vcpu,
+
+ void kvm_enable_efer_bits(u64);
+ bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
+-int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
++int kvm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
+ int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
+
+ struct x86_emulate_ctxt;
+@@ -967,7 +967,7 @@ void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
+ void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
+ int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
+
+-int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
++int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
+ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
+
+ unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
+diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
+index 7dd9a8d3911a..b9cf3ee6514f 100644
+--- a/arch/x86/kvm/lapic.c
++++ b/arch/x86/kvm/lapic.c
+@@ -2080,3 +2080,9 @@ void kvm_lapic_init(void)
+ jump_label_rate_limit(&apic_hw_disabled, HZ);
+ jump_label_rate_limit(&apic_sw_disabled, HZ);
+ }
++
++void kvm_lapic_exit(void)
++{
++ static_key_deferred_flush(&apic_hw_disabled);
++ static_key_deferred_flush(&apic_sw_disabled);
++}
+diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
+index c4ea87eedf8a..5773f1eaf46e 100644
+--- a/arch/x86/kvm/lapic.h
++++ b/arch/x86/kvm/lapic.h
+@@ -95,6 +95,7 @@ static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu)
+
+ int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data);
+ void kvm_lapic_init(void);
++void kvm_lapic_exit(void);
+
+ static inline u32 kvm_apic_get_reg(struct kvm_lapic *apic, int reg_off)
+ {
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 0d039cd268a8..23be7ffebb4b 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -3069,42 +3069,42 @@ static u64 svm_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc)
+ svm_scale_tsc(vcpu, host_tsc);
+ }
+
+-static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
++static int svm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+ {
+ struct vcpu_svm *svm = to_svm(vcpu);
+
+- switch (ecx) {
++ switch (msr_info->index) {
+ case MSR_IA32_TSC: {
+- *data = svm->vmcb->control.tsc_offset +
++ msr_info->data = svm->vmcb->control.tsc_offset +
+ svm_scale_tsc(vcpu, native_read_tsc());
+
+ break;
+ }
+ case MSR_STAR:
+- *data = svm->vmcb->save.star;
++ msr_info->data = svm->vmcb->save.star;
+ break;
+ #ifdef CONFIG_X86_64
+ case MSR_LSTAR:
+- *data = svm->vmcb->save.lstar;
++ msr_info->data = svm->vmcb->save.lstar;
+ break;
+ case MSR_CSTAR:
+- *data = svm->vmcb->save.cstar;
++ msr_info->data = svm->vmcb->save.cstar;
+ break;
+ case MSR_KERNEL_GS_BASE:
+- *data = svm->vmcb->save.kernel_gs_base;
++ msr_info->data = svm->vmcb->save.kernel_gs_base;
+ break;
+ case MSR_SYSCALL_MASK:
+- *data = svm->vmcb->save.sfmask;
++ msr_info->data = svm->vmcb->save.sfmask;
+ break;
+ #endif
+ case MSR_IA32_SYSENTER_CS:
+- *data = svm->vmcb->save.sysenter_cs;
++ msr_info->data = svm->vmcb->save.sysenter_cs;
+ break;
+ case MSR_IA32_SYSENTER_EIP:
+- *data = svm->sysenter_eip;
++ msr_info->data = svm->sysenter_eip;
+ break;
+ case MSR_IA32_SYSENTER_ESP:
+- *data = svm->sysenter_esp;
++ msr_info->data = svm->sysenter_esp;
+ break;
+ /*
+ * Nobody will change the following 5 values in the VMCB so we can
+@@ -3112,31 +3112,31 @@ static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
+ * implemented.
+ */
+ case MSR_IA32_DEBUGCTLMSR:
+- *data = svm->vmcb->save.dbgctl;
++ msr_info->data = svm->vmcb->save.dbgctl;
+ break;
+ case MSR_IA32_LASTBRANCHFROMIP:
+- *data = svm->vmcb->save.br_from;
++ msr_info->data = svm->vmcb->save.br_from;
+ break;
+ case MSR_IA32_LASTBRANCHTOIP:
+- *data = svm->vmcb->save.br_to;
++ msr_info->data = svm->vmcb->save.br_to;
+ break;
+ case MSR_IA32_LASTINTFROMIP:
+- *data = svm->vmcb->save.last_excp_from;
++ msr_info->data = svm->vmcb->save.last_excp_from;
+ break;
+ case MSR_IA32_LASTINTTOIP:
+- *data = svm->vmcb->save.last_excp_to;
++ msr_info->data = svm->vmcb->save.last_excp_to;
+ break;
+ case MSR_VM_HSAVE_PA:
+- *data = svm->nested.hsave_msr;
++ msr_info->data = svm->nested.hsave_msr;
+ break;
+ case MSR_VM_CR:
+- *data = svm->nested.vm_cr_msr;
++ msr_info->data = svm->nested.vm_cr_msr;
+ break;
+ case MSR_IA32_UCODE_REV:
+- *data = 0x01000065;
++ msr_info->data = 0x01000065;
+ break;
+ default:
+- return kvm_get_msr_common(vcpu, ecx, data);
++ return kvm_get_msr_common(vcpu, msr_info);
+ }
+ return 0;
+ }
+@@ -3144,16 +3144,20 @@ static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
+ static int rdmsr_interception(struct vcpu_svm *svm)
+ {
+ u32 ecx = kvm_register_read(&svm->vcpu, VCPU_REGS_RCX);
+- u64 data;
++ struct msr_data msr_info;
+
+- if (svm_get_msr(&svm->vcpu, ecx, &data)) {
++ msr_info.index = ecx;
++ msr_info.host_initiated = false;
++ if (svm_get_msr(&svm->vcpu, &msr_info)) {
+ trace_kvm_msr_read_ex(ecx);
+ kvm_inject_gp(&svm->vcpu, 0);
+ } else {
+- trace_kvm_msr_read(ecx, data);
++ trace_kvm_msr_read(ecx, msr_info.data);
+
+- kvm_register_write(&svm->vcpu, VCPU_REGS_RAX, data & 0xffffffff);
+- kvm_register_write(&svm->vcpu, VCPU_REGS_RDX, data >> 32);
++ kvm_register_write(&svm->vcpu, VCPU_REGS_RAX,
++ msr_info.data & 0xffffffff);
++ kvm_register_write(&svm->vcpu, VCPU_REGS_RDX,
++ msr_info.data >> 32);
+ svm->next_rip = kvm_rip_read(&svm->vcpu) + 2;
+ skip_emulated_instruction(&svm->vcpu);
+ }
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 341ea55d2e85..048830f2927d 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -2640,76 +2640,69 @@ static int vmx_get_vmx_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
+ * Returns 0 on success, non-0 otherwise.
+ * Assumes vcpu_load() was already called.
+ */
+-static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
++static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+ {
+- u64 data;
+ struct shared_msr_entry *msr;
+
+- if (!pdata) {
+- printk(KERN_ERR "BUG: get_msr called with NULL pdata\n");
+- return -EINVAL;
+- }
+-
+- switch (msr_index) {
++ switch (msr_info->index) {
+ #ifdef CONFIG_X86_64
+ case MSR_FS_BASE:
+- data = vmcs_readl(GUEST_FS_BASE);
++ msr_info->data = vmcs_readl(GUEST_FS_BASE);
+ break;
+ case MSR_GS_BASE:
+- data = vmcs_readl(GUEST_GS_BASE);
++ msr_info->data = vmcs_readl(GUEST_GS_BASE);
+ break;
+ case MSR_KERNEL_GS_BASE:
+ vmx_load_host_state(to_vmx(vcpu));
+- data = to_vmx(vcpu)->msr_guest_kernel_gs_base;
++ msr_info->data = to_vmx(vcpu)->msr_guest_kernel_gs_base;
+ break;
+ #endif
+ case MSR_EFER:
+- return kvm_get_msr_common(vcpu, msr_index, pdata);
++ return kvm_get_msr_common(vcpu, msr_info);
+ case MSR_IA32_TSC:
+- data = guest_read_tsc();
++ msr_info->data = guest_read_tsc();
+ break;
+ case MSR_IA32_SYSENTER_CS:
+- data = vmcs_read32(GUEST_SYSENTER_CS);
++ msr_info->data = vmcs_read32(GUEST_SYSENTER_CS);
+ break;
+ case MSR_IA32_SYSENTER_EIP:
+- data = vmcs_readl(GUEST_SYSENTER_EIP);
++ msr_info->data = vmcs_readl(GUEST_SYSENTER_EIP);
+ break;
+ case MSR_IA32_SYSENTER_ESP:
+- data = vmcs_readl(GUEST_SYSENTER_ESP);
++ msr_info->data = vmcs_readl(GUEST_SYSENTER_ESP);
+ break;
+ case MSR_IA32_BNDCFGS:
+ if (!vmx_mpx_supported())
+ return 1;
+- data = vmcs_read64(GUEST_BNDCFGS);
++ msr_info->data = vmcs_read64(GUEST_BNDCFGS);
+ break;
+ case MSR_IA32_FEATURE_CONTROL:
+ if (!nested_vmx_allowed(vcpu))
+ return 1;
+- data = to_vmx(vcpu)->nested.msr_ia32_feature_control;
++ msr_info->data = to_vmx(vcpu)->nested.msr_ia32_feature_control;
+ break;
+ case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
+ if (!nested_vmx_allowed(vcpu))
+ return 1;
+- return vmx_get_vmx_msr(vcpu, msr_index, pdata);
++ return vmx_get_vmx_msr(vcpu, msr_info->index, &msr_info->data);
+ case MSR_IA32_XSS:
+ if (!vmx_xsaves_supported())
+ return 1;
+- data = vcpu->arch.ia32_xss;
++ msr_info->data = vcpu->arch.ia32_xss;
+ break;
+ case MSR_TSC_AUX:
+- if (!to_vmx(vcpu)->rdtscp_enabled)
++ if (!to_vmx(vcpu)->rdtscp_enabled && !msr_info->host_initiated)
+ return 1;
+ /* Otherwise falls through */
+ default:
+- msr = find_msr_entry(to_vmx(vcpu), msr_index);
++ msr = find_msr_entry(to_vmx(vcpu), msr_info->index);
+ if (msr) {
+- data = msr->data;
++ msr_info->data = msr->data;
+ break;
+ }
+- return kvm_get_msr_common(vcpu, msr_index, pdata);
++ return kvm_get_msr_common(vcpu, msr_info);
+ }
+
+- *pdata = data;
+ return 0;
+ }
+
+@@ -2804,7 +2797,7 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+ clear_atomic_switch_msr(vmx, MSR_IA32_XSS);
+ break;
+ case MSR_TSC_AUX:
+- if (!vmx->rdtscp_enabled)
++ if (!vmx->rdtscp_enabled && !msr_info->host_initiated)
+ return 1;
+ /* Check reserved bit, higher 32 bits should be zero */
+ if ((data >> 32) != 0)
+@@ -5496,19 +5489,21 @@ static int handle_cpuid(struct kvm_vcpu *vcpu)
+ static int handle_rdmsr(struct kvm_vcpu *vcpu)
+ {
+ u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX];
+- u64 data;
++ struct msr_data msr_info;
+
+- if (vmx_get_msr(vcpu, ecx, &data)) {
++ msr_info.index = ecx;
++ msr_info.host_initiated = false;
++ if (vmx_get_msr(vcpu, &msr_info)) {
+ trace_kvm_msr_read_ex(ecx);
+ kvm_inject_gp(vcpu, 0);
+ return 1;
+ }
+
+- trace_kvm_msr_read(ecx, data);
++ trace_kvm_msr_read(ecx, msr_info.data);
+
+ /* FIXME: handling of bits 32:63 of rax, rdx */
+- vcpu->arch.regs[VCPU_REGS_RAX] = data & -1u;
+- vcpu->arch.regs[VCPU_REGS_RDX] = (data >> 32) & -1u;
++ vcpu->arch.regs[VCPU_REGS_RAX] = msr_info.data & -1u;
++ vcpu->arch.regs[VCPU_REGS_RDX] = (msr_info.data >> 32) & -1u;
+ skip_emulated_instruction(vcpu);
+ return 1;
+ }
+@@ -9038,6 +9033,7 @@ static int nested_vmx_store_msr(struct kvm_vcpu *vcpu, u64 gpa, u32 count)
+ struct vmx_msr_entry e;
+
+ for (i = 0; i < count; i++) {
++ struct msr_data msr_info;
+ if (kvm_read_guest(vcpu->kvm,
+ gpa + i * sizeof(e),
+ &e, 2 * sizeof(u32))) {
+@@ -9052,7 +9048,9 @@ static int nested_vmx_store_msr(struct kvm_vcpu *vcpu, u64 gpa, u32 count)
+ __func__, i, e.index, e.reserved);
+ return -EINVAL;
+ }
+- if (kvm_get_msr(vcpu, e.index, &e.value)) {
++ msr_info.host_initiated = false;
++ msr_info.index = e.index;
++ if (kvm_get_msr(vcpu, &msr_info)) {
+ pr_warn_ratelimited(
+ "%s cannot read MSR (%u, 0x%x)\n",
+ __func__, i, e.index);
+@@ -9061,10 +9059,10 @@ static int nested_vmx_store_msr(struct kvm_vcpu *vcpu, u64 gpa, u32 count)
+ if (kvm_write_guest(vcpu->kvm,
+ gpa + i * sizeof(e) +
+ offsetof(struct vmx_msr_entry, value),
+- &e.value, sizeof(e.value))) {
++ &msr_info.data, sizeof(msr_info.data))) {
+ pr_warn_ratelimited(
+ "%s cannot write MSR (%u, 0x%x, 0x%llx)\n",
+- __func__, i, e.index, e.value);
++ __func__, i, e.index, msr_info.data);
+ return -EINVAL;
+ }
+ }
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index bd84d2226ca1..012820f6acb9 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -1045,6 +1045,21 @@ EXPORT_SYMBOL_GPL(kvm_set_msr);
+ /*
+ * Adapt set_msr() to msr_io()'s calling convention
+ */
++static int do_get_msr(struct kvm_vcpu *vcpu, unsigned index, u64 *data)
++{
++ struct msr_data msr;
++ int r;
++
++ msr.index = index;
++ msr.host_initiated = true;
++ r = kvm_get_msr(vcpu, &msr);
++ if (r)
++ return r;
++
++ *data = msr.data;
++ return 0;
++}
++
+ static int do_set_msr(struct kvm_vcpu *vcpu, unsigned index, u64 *data)
+ {
+ struct msr_data msr;
+@@ -2374,9 +2389,9 @@ EXPORT_SYMBOL_GPL(kvm_set_msr_common);
+ * Returns 0 on success, non-0 otherwise.
+ * Assumes vcpu_load() was already called.
+ */
+-int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
++int kvm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
+ {
+- return kvm_x86_ops->get_msr(vcpu, msr_index, pdata);
++ return kvm_x86_ops->get_msr(vcpu, msr);
+ }
+ EXPORT_SYMBOL_GPL(kvm_get_msr);
+
+@@ -2513,11 +2528,9 @@ static int get_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+ return 0;
+ }
+
+-int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
++int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+ {
+- u64 data;
+-
+- switch (msr) {
++ switch (msr_info->index) {
+ case MSR_IA32_PLATFORM_ID:
+ case MSR_IA32_EBL_CR_POWERON:
+ case MSR_IA32_DEBUGCTLMSR:
+@@ -2540,26 +2553,26 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+ case MSR_AMD64_NB_CFG:
+ case MSR_FAM10H_MMIO_CONF_BASE:
+ case MSR_AMD64_BU_CFG2:
+- data = 0;
++ msr_info->data = 0;
+ break;
+ case MSR_P6_PERFCTR0:
+ case MSR_P6_PERFCTR1:
+ case MSR_P6_EVNTSEL0:
+ case MSR_P6_EVNTSEL1:
+- if (kvm_pmu_msr(vcpu, msr))
+- return kvm_pmu_get_msr(vcpu, msr, pdata);
+- data = 0;
++ if (kvm_pmu_msr(vcpu, msr_info->index))
++ return kvm_pmu_get_msr(vcpu, msr_info->index, &msr_info->data);
++ msr_info->data = 0;
+ break;
+ case MSR_IA32_UCODE_REV:
+- data = 0x100000000ULL;
++ msr_info->data = 0x100000000ULL;
+ break;
+ case MSR_MTRRcap:
+- data = 0x500 | KVM_NR_VAR_MTRR;
++ msr_info->data = 0x500 | KVM_NR_VAR_MTRR;
+ break;
+ case 0x200 ... 0x2ff:
+- return get_msr_mtrr(vcpu, msr, pdata);
++ return get_msr_mtrr(vcpu, msr_info->index, &msr_info->data);
+ case 0xcd: /* fsb frequency */
+- data = 3;
++ msr_info->data = 3;
+ break;
+ /*
+ * MSR_EBC_FREQUENCY_ID
+@@ -2573,48 +2586,48 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+ * multiplying by zero otherwise.
+ */
+ case MSR_EBC_FREQUENCY_ID:
+- data = 1 << 24;
++ msr_info->data = 1 << 24;
+ break;
+ case MSR_IA32_APICBASE:
+- data = kvm_get_apic_base(vcpu);
++ msr_info->data = kvm_get_apic_base(vcpu);
+ break;
+ case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff:
+- return kvm_x2apic_msr_read(vcpu, msr, pdata);
++ return kvm_x2apic_msr_read(vcpu, msr_info->index, &msr_info->data);
+ break;
+ case MSR_IA32_TSCDEADLINE:
+- data = kvm_get_lapic_tscdeadline_msr(vcpu);
++ msr_info->data = kvm_get_lapic_tscdeadline_msr(vcpu);
+ break;
+ case MSR_IA32_TSC_ADJUST:
+- data = (u64)vcpu->arch.ia32_tsc_adjust_msr;
++ msr_info->data = (u64)vcpu->arch.ia32_tsc_adjust_msr;
+ break;
+ case MSR_IA32_MISC_ENABLE:
+- data = vcpu->arch.ia32_misc_enable_msr;
++ msr_info->data = vcpu->arch.ia32_misc_enable_msr;
+ break;
+ case MSR_IA32_PERF_STATUS:
+ /* TSC increment by tick */
+- data = 1000ULL;
++ msr_info->data = 1000ULL;
+ /* CPU multiplier */
+- data |= (((uint64_t)4ULL) << 40);
++ msr_info->data |= (((uint64_t)4ULL) << 40);
+ break;
+ case MSR_EFER:
+- data = vcpu->arch.efer;
++ msr_info->data = vcpu->arch.efer;
+ break;
+ case MSR_KVM_WALL_CLOCK:
+ case MSR_KVM_WALL_CLOCK_NEW:
+- data = vcpu->kvm->arch.wall_clock;
++ msr_info->data = vcpu->kvm->arch.wall_clock;
+ break;
+ case MSR_KVM_SYSTEM_TIME:
+ case MSR_KVM_SYSTEM_TIME_NEW:
+- data = vcpu->arch.time;
++ msr_info->data = vcpu->arch.time;
+ break;
+ case MSR_KVM_ASYNC_PF_EN:
+- data = vcpu->arch.apf.msr_val;
++ msr_info->data = vcpu->arch.apf.msr_val;
+ break;
+ case MSR_KVM_STEAL_TIME:
+- data = vcpu->arch.st.msr_val;
++ msr_info->data = vcpu->arch.st.msr_val;
+ break;
+ case MSR_KVM_PV_EOI_EN:
+- data = vcpu->arch.pv_eoi.msr_val;
++ msr_info->data = vcpu->arch.pv_eoi.msr_val;
+ break;
+ case MSR_IA32_P5_MC_ADDR:
+ case MSR_IA32_P5_MC_TYPE:
+@@ -2622,7 +2635,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+ case MSR_IA32_MCG_CTL:
+ case MSR_IA32_MCG_STATUS:
+ case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_CTL(KVM_MAX_MCE_BANKS) - 1:
+- return get_msr_mce(vcpu, msr, pdata);
++ return get_msr_mce(vcpu, msr_info->index, &msr_info->data);
+ case MSR_K7_CLK_CTL:
+ /*
+ * Provide expected ramp-up count for K7. All other
+@@ -2633,17 +2646,17 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+ * type 6, model 8 and higher from exploding due to
+ * the rdmsr failing.
+ */
+- data = 0x20000000;
++ msr_info->data = 0x20000000;
+ break;
+ case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15:
+- if (kvm_hv_msr_partition_wide(msr)) {
++ if (kvm_hv_msr_partition_wide(msr_info->index)) {
+ int r;
+ mutex_lock(&vcpu->kvm->lock);
+- r = get_msr_hyperv_pw(vcpu, msr, pdata);
++ r = get_msr_hyperv_pw(vcpu, msr_info->index, &msr_info->data);
+ mutex_unlock(&vcpu->kvm->lock);
+ return r;
+ } else
+- return get_msr_hyperv(vcpu, msr, pdata);
++ return get_msr_hyperv(vcpu, msr_info->index, &msr_info->data);
+ break;
+ case MSR_IA32_BBL_CR_CTL3:
+ /* This legacy MSR exists but isn't fully documented in current
+@@ -2656,31 +2669,30 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+ * L2 cache control register 3: 64GB range, 256KB size,
+ * enabled, latency 0x1, configured
+ */
+- data = 0xbe702111;
++ msr_info->data = 0xbe702111;
+ break;
+ case MSR_AMD64_OSVW_ID_LENGTH:
+ if (!guest_cpuid_has_osvw(vcpu))
+ return 1;
+- data = vcpu->arch.osvw.length;
++ msr_info->data = vcpu->arch.osvw.length;
+ break;
+ case MSR_AMD64_OSVW_STATUS:
+ if (!guest_cpuid_has_osvw(vcpu))
+ return 1;
+- data = vcpu->arch.osvw.status;
++ msr_info->data = vcpu->arch.osvw.status;
+ break;
+ default:
+- if (kvm_pmu_msr(vcpu, msr))
+- return kvm_pmu_get_msr(vcpu, msr, pdata);
++ if (kvm_pmu_msr(vcpu, msr_info->index))
++ return kvm_pmu_get_msr(vcpu, msr_info->index, &msr_info->data);
+ if (!ignore_msrs) {
+- vcpu_unimpl(vcpu, "unhandled rdmsr: 0x%x\n", msr);
++ vcpu_unimpl(vcpu, "unhandled rdmsr: 0x%x\n", msr_info->index);
+ return 1;
+ } else {
+- vcpu_unimpl(vcpu, "ignored rdmsr: 0x%x\n", msr);
+- data = 0;
++ vcpu_unimpl(vcpu, "ignored rdmsr: 0x%x\n", msr_info->index);
++ msr_info->data = 0;
+ }
+ break;
+ }
+- *pdata = data;
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(kvm_get_msr_common);
+@@ -3453,7 +3465,7 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
+ break;
+ }
+ case KVM_GET_MSRS:
+- r = msr_io(vcpu, argp, kvm_get_msr, 1);
++ r = msr_io(vcpu, argp, do_get_msr, 1);
+ break;
+ case KVM_SET_MSRS:
+ r = msr_io(vcpu, argp, do_set_msr, 0);
+@@ -4948,7 +4960,17 @@ static void emulator_set_segment(struct x86_emulate_ctxt *ctxt, u16 selector,
+ static int emulator_get_msr(struct x86_emulate_ctxt *ctxt,
+ u32 msr_index, u64 *pdata)
+ {
+- return kvm_get_msr(emul_to_vcpu(ctxt), msr_index, pdata);
++ struct msr_data msr;
++ int r;
++
++ msr.index = msr_index;
++ msr.host_initiated = false;
++ r = kvm_get_msr(emul_to_vcpu(ctxt), &msr);
++ if (r)
++ return r;
++
++ *pdata = msr.data;
++ return 0;
+ }
+
+ static int emulator_set_msr(struct x86_emulate_ctxt *ctxt,
+@@ -5848,6 +5870,7 @@ out:
+
+ void kvm_arch_exit(void)
+ {
++ kvm_lapic_exit();
+ perf_unregister_guest_info_callbacks(&kvm_guest_cbs);
+
+ if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC))
+diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
+index ff9911707160..3b29bd7e0342 100644
+--- a/arch/x86/pci/acpi.c
++++ b/arch/x86/pci/acpi.c
+@@ -115,6 +115,16 @@ static const struct dmi_system_id pci_crs_quirks[] __initconst = {
+ DMI_MATCH(DMI_BIOS_VERSION, "6JET85WW (1.43 )"),
+ },
+ },
++ /* https://bugzilla.kernel.org/show_bug.cgi?id=42606 */
++ {
++ .callback = set_nouse_crs,
++ .ident = "Supermicro X8DTH",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
++ DMI_MATCH(DMI_PRODUCT_NAME, "X8DTH-i/6/iF/6F"),
++ DMI_MATCH(DMI_BIOS_VERSION, "2.0a"),
++ },
++ },
+
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=15362 */
+ {
+diff --git a/crypto/algapi.c b/crypto/algapi.c
+index dda720c6ab08..4e69f3161888 100644
+--- a/crypto/algapi.c
++++ b/crypto/algapi.c
+@@ -349,6 +349,7 @@ int crypto_register_alg(struct crypto_alg *alg)
+ struct crypto_larval *larval;
+ int err;
+
++ alg->cra_flags &= ~CRYPTO_ALG_DEAD;
+ err = crypto_check_alg(alg);
+ if (err)
+ return err;
+diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
+index 9daf46bf3a28..4c0dac27882f 100644
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -1692,6 +1692,8 @@ unsigned ata_exec_internal_sg(struct ata_device *dev,
+
+ if (qc->err_mask & ~AC_ERR_OTHER)
+ qc->err_mask &= ~AC_ERR_OTHER;
++ } else if (qc->tf.command == ATA_CMD_REQ_SENSE_DATA) {
++ qc->result_tf.command |= ATA_SENSE;
+ }
+
+ /* finish up */
+@@ -4139,10 +4141,10 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ { "ST380013AS", "3.20", ATA_HORKAGE_MAX_SEC_1024 },
+
+ /*
+- * Device times out with higher max sects.
++ * These devices time out with higher max sects.
+ * https://bugzilla.kernel.org/show_bug.cgi?id=121671
+ */
+- { "LITEON CX1-JB256-HP", NULL, ATA_HORKAGE_MAX_SEC_1024 },
++ { "LITEON CX1-JB*-HP", NULL, ATA_HORKAGE_MAX_SEC_1024 },
+
+ /* Devices we expect to fail diagnostics */
+
+diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
+index bd74ee555278..729f26322095 100644
+--- a/drivers/ata/sata_mv.c
++++ b/drivers/ata/sata_mv.c
+@@ -4121,6 +4121,9 @@ static int mv_platform_probe(struct platform_device *pdev)
+ host->iomap = NULL;
+ hpriv->base = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
++ if (!hpriv->base)
++ return -ENOMEM;
++
+ hpriv->base -= SATAHC0_REG_BASE;
+
+ hpriv->clk = clk_get(&pdev->dev, NULL);
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index ef773bf58a25..f557695a2409 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -1810,7 +1810,7 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr)
+ mgr->payloads[i].num_slots = req_payload.num_slots;
+ } else if (mgr->payloads[i].num_slots) {
+ mgr->payloads[i].num_slots = 0;
+- drm_dp_destroy_payload_step1(mgr, port, port->vcpi.vcpi, &mgr->payloads[i]);
++ drm_dp_destroy_payload_step1(mgr, port, mgr->payloads[i].vcpi, &mgr->payloads[i]);
+ req_payload.payload_state = mgr->payloads[i].payload_state;
+ mgr->payloads[i].start_slot = 0;
+ }
+diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
+index 213b11ea69b5..76a1461149fb 100644
+--- a/drivers/gpu/drm/drm_modes.c
++++ b/drivers/gpu/drm/drm_modes.c
+@@ -1401,6 +1401,13 @@ drm_mode_create_from_cmdline_mode(struct drm_device *dev,
+ return NULL;
+
+ mode->type |= DRM_MODE_TYPE_USERDEF;
++ /* fix up 1368x768: GFT/CVT can't express 1366 width due to alignment */
++ if (cmd->xres == 1366 && mode->hdisplay == 1368) {
++ mode->hdisplay = 1366;
++ mode->hsync_start--;
++ mode->hsync_end--;
++ drm_mode_set_name(mode);
++ }
+ drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
+ return mode;
+ }
+diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
+index 0542c252dde5..131874409d84 100644
+--- a/drivers/gpu/drm/i915/intel_crt.c
++++ b/drivers/gpu/drm/i915/intel_crt.c
+@@ -506,6 +506,7 @@ static bool intel_crt_detect_ddc(struct drm_connector *connector)
+ struct drm_i915_private *dev_priv = crt->base.base.dev->dev_private;
+ struct edid *edid;
+ struct i2c_adapter *i2c;
++ bool ret = false;
+
+ BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG);
+
+@@ -522,17 +523,17 @@ static bool intel_crt_detect_ddc(struct drm_connector *connector)
+ */
+ if (!is_digital) {
+ DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
+- return true;
++ ret = true;
++ } else {
++ DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
+ }
+-
+- DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
+ } else {
+ DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n");
+ }
+
+ kfree(edid);
+
+- return false;
++ return ret;
+ }
+
+ static enum drm_connector_status
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index 56323732c748..78d82689b8d6 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -3785,10 +3785,10 @@ static void page_flip_completed(struct intel_crtc *intel_crtc)
+ drm_crtc_vblank_put(&intel_crtc->base);
+
+ wake_up_all(&dev_priv->pending_flip_queue);
+- queue_work(dev_priv->wq, &work->work);
+-
+ trace_i915_flip_complete(intel_crtc->plane,
+ work->pending_flip_obj);
++
++ queue_work(dev_priv->wq, &work->work);
+ }
+
+ void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
+diff --git a/drivers/gpu/drm/nouveau/dispnv04/hw.c b/drivers/gpu/drm/nouveau/dispnv04/hw.c
+index 42e07afc4c2b..9666e2b4c6d6 100644
+--- a/drivers/gpu/drm/nouveau/dispnv04/hw.c
++++ b/drivers/gpu/drm/nouveau/dispnv04/hw.c
+@@ -222,6 +222,7 @@ nouveau_hw_get_clock(struct drm_device *dev, enum nvbios_pll_type plltype)
+ uint32_t mpllP;
+
+ pci_read_config_dword(pci_get_bus_and_slot(0, 3), 0x6c, &mpllP);
++ mpllP = (mpllP >> 8) & 0xf;
+ if (!mpllP)
+ mpllP = 4;
+
+@@ -232,7 +233,7 @@ nouveau_hw_get_clock(struct drm_device *dev, enum nvbios_pll_type plltype)
+ uint32_t clock;
+
+ pci_read_config_dword(pci_get_bus_and_slot(0, 5), 0x4c, &clock);
+- return clock;
++ return clock / 1000;
+ }
+
+ ret = nouveau_hw_get_pllvals(dev, plltype, &pllvals);
+diff --git a/drivers/gpu/drm/radeon/radeon_cursor.c b/drivers/gpu/drm/radeon/radeon_cursor.c
+index cba23008eca4..57f0082edb5f 100644
+--- a/drivers/gpu/drm/radeon/radeon_cursor.c
++++ b/drivers/gpu/drm/radeon/radeon_cursor.c
+@@ -186,8 +186,8 @@ static int radeon_cursor_move_locked(struct drm_crtc *crtc, int x, int y)
+ }
+
+ if (x <= (crtc->x - w) || y <= (crtc->y - radeon_crtc->cursor_height) ||
+- x >= (crtc->x + crtc->mode.crtc_hdisplay) ||
+- y >= (crtc->y + crtc->mode.crtc_vdisplay))
++ x >= (crtc->x + crtc->mode.hdisplay) ||
++ y >= (crtc->y + crtc->mode.vdisplay))
+ goto out_of_bounds;
+
+ x += xorigin;
+diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
+index a717da729fb8..23cf21215f42 100644
+--- a/drivers/gpu/drm/radeon/si_dpm.c
++++ b/drivers/gpu/drm/radeon/si_dpm.c
+@@ -2957,19 +2957,6 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
+ (rdev->pdev->device == 0x6817) ||
+ (rdev->pdev->device == 0x6806))
+ max_mclk = 120000;
+- } else if (rdev->family == CHIP_VERDE) {
+- if ((rdev->pdev->revision == 0x81) ||
+- (rdev->pdev->revision == 0x83) ||
+- (rdev->pdev->revision == 0x87) ||
+- (rdev->pdev->device == 0x6820) ||
+- (rdev->pdev->device == 0x6821) ||
+- (rdev->pdev->device == 0x6822) ||
+- (rdev->pdev->device == 0x6823) ||
+- (rdev->pdev->device == 0x682A) ||
+- (rdev->pdev->device == 0x682B)) {
+- max_sclk = 75000;
+- max_mclk = 80000;
+- }
+ } else if (rdev->family == CHIP_OLAND) {
+ if ((rdev->pdev->revision == 0xC7) ||
+ (rdev->pdev->revision == 0x80) ||
+diff --git a/drivers/hid/hid-cypress.c b/drivers/hid/hid-cypress.c
+index c4ef3bc726e3..e299576004ce 100644
+--- a/drivers/hid/hid-cypress.c
++++ b/drivers/hid/hid-cypress.c
+@@ -39,6 +39,9 @@ static __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX))
+ return rdesc;
+
++ if (*rsize < 4)
++ return rdesc;
++
+ for (i = 0; i < *rsize - 4; i++)
+ if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) {
+ __u8 tmp;
+diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
+index 0efd766a545b..880b04b7bab3 100644
+--- a/drivers/input/touchscreen/elants_i2c.c
++++ b/drivers/input/touchscreen/elants_i2c.c
+@@ -889,9 +889,9 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
+
+ case QUEUE_HEADER_NORMAL:
+ report_count = ts->buf[FW_HDR_COUNT];
+- if (report_count > 3) {
++ if (report_count == 0 || report_count > 3) {
+ dev_err(&client->dev,
+- "too large report count: %*ph\n",
++ "bad report count: %*ph\n",
+ HEADER_SIZE, ts->buf);
+ break;
+ }
+diff --git a/drivers/isdn/hardware/eicon/message.c b/drivers/isdn/hardware/eicon/message.c
+index d7c286656a25..7b4ddf0a39ec 100644
+--- a/drivers/isdn/hardware/eicon/message.c
++++ b/drivers/isdn/hardware/eicon/message.c
+@@ -11304,7 +11304,8 @@ static void mixer_notify_update(PLCI *plci, byte others)
+ ((CAPI_MSG *) msg)->header.ncci = 0;
+ ((CAPI_MSG *) msg)->info.facility_req.Selector = SELECTOR_LINE_INTERCONNECT;
+ ((CAPI_MSG *) msg)->info.facility_req.structs[0] = 3;
+- PUT_WORD(&(((CAPI_MSG *) msg)->info.facility_req.structs[1]), LI_REQ_SILENT_UPDATE);
++ ((CAPI_MSG *) msg)->info.facility_req.structs[1] = LI_REQ_SILENT_UPDATE & 0xff;
++ ((CAPI_MSG *) msg)->info.facility_req.structs[2] = LI_REQ_SILENT_UPDATE >> 8;
+ ((CAPI_MSG *) msg)->info.facility_req.structs[3] = 0;
+ w = api_put(notify_plci->appl, (CAPI_MSG *) msg);
+ if (w != _QUEUE_FULL)
+diff --git a/drivers/media/usb/siano/smsusb.c b/drivers/media/usb/siano/smsusb.c
+index c945e4c2fbd4..ec30a004f319 100644
+--- a/drivers/media/usb/siano/smsusb.c
++++ b/drivers/media/usb/siano/smsusb.c
+@@ -200,22 +200,30 @@ static int smsusb_start_streaming(struct smsusb_device_t *dev)
+ static int smsusb_sendrequest(void *context, void *buffer, size_t size)
+ {
+ struct smsusb_device_t *dev = (struct smsusb_device_t *) context;
+- struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) buffer;
+- int dummy;
++ struct sms_msg_hdr *phdr;
++ int dummy, ret;
+
+ if (dev->state != SMSUSB_ACTIVE) {
+ pr_debug("Device not active yet\n");
+ return -ENOENT;
+ }
+
++ phdr = kmalloc(size, GFP_KERNEL);
++ if (!phdr)
++ return -ENOMEM;
++ memcpy(phdr, buffer, size);
++
+ pr_debug("sending %s(%d) size: %d\n",
+ smscore_translate_msg(phdr->msg_type), phdr->msg_type,
+ phdr->msg_length);
+
+ smsendian_handle_tx_message((struct sms_msg_data *) phdr);
+- smsendian_handle_message_header((struct sms_msg_hdr *)buffer);
+- return usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2),
+- buffer, size, &dummy, 1000);
++ smsendian_handle_message_header((struct sms_msg_hdr *)phdr);
++ ret = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2),
++ phdr, size, &dummy, 1000);
++
++ kfree(phdr);
++ return ret;
+ }
+
+ static char *smsusb1_fw_lkup[] = {
+diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
+index 3ccc89d4c473..1cc1e51a1866 100644
+--- a/drivers/mmc/core/mmc.c
++++ b/drivers/mmc/core/mmc.c
+@@ -1415,10 +1415,10 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
+ err = mmc_select_hs400(card);
+ if (err)
+ goto free_card;
+- } else if (mmc_card_hs(card)) {
++ } else {
+ /* Select the desired bus width optionally */
+ err = mmc_select_bus_width(card);
+- if (!IS_ERR_VALUE(err)) {
++ if (!IS_ERR_VALUE(err) && mmc_card_hs(card)) {
+ err = mmc_select_hs_ddr(card);
+ if (err)
+ goto free_card;
+diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
+index a82411a2c024..7a178215866c 100644
+--- a/drivers/mmc/host/mxs-mmc.c
++++ b/drivers/mmc/host/mxs-mmc.c
+@@ -309,6 +309,9 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host)
+ cmd0 = BF_SSP(cmd->opcode, CMD0_CMD);
+ cmd1 = cmd->arg;
+
++ if (cmd->opcode == MMC_STOP_TRANSMISSION)
++ cmd0 |= BM_SSP_CMD0_APPEND_8CYC;
++
+ if (host->sdio_irq_en) {
+ ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
+ cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN | BM_SSP_CMD0_SLOW_CLKING_EN;
+@@ -417,8 +420,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
+ ssp->base + HW_SSP_BLOCK_SIZE);
+ }
+
+- if ((cmd->opcode == MMC_STOP_TRANSMISSION) ||
+- (cmd->opcode == SD_IO_RW_EXTENDED))
++ if (cmd->opcode == SD_IO_RW_EXTENDED)
+ cmd0 |= BM_SSP_CMD0_APPEND_8CYC;
+
+ cmd1 = cmd->arg;
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index fdc44c8200ba..84e3f7a43f47 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -2650,7 +2650,8 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
+ pr_err("%s: Card is consuming too much power!\n",
+ mmc_hostname(host->mmc));
+
+- if (intmask & SDHCI_INT_CARD_INT) {
++ if ((intmask & SDHCI_INT_CARD_INT) &&
++ (host->ier & SDHCI_INT_CARD_INT)) {
+ sdhci_enable_sdio_irq_nolock(host, false);
+ host->thread_isr |= SDHCI_INT_CARD_INT;
+ result = IRQ_WAKE_THREAD;
+diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
+index 5897d8d8fa5a..e60105dd1654 100644
+--- a/drivers/mtd/nand/Kconfig
++++ b/drivers/mtd/nand/Kconfig
+@@ -511,7 +511,7 @@ config MTD_NAND_FSMC
+ Flexible Static Memory Controller (FSMC)
+
+ config MTD_NAND_XWAY
+- tristate "Support for NAND on Lantiq XWAY SoC"
++ bool "Support for NAND on Lantiq XWAY SoC"
+ depends on LANTIQ && SOC_TYPE_XWAY
+ select MTD_NAND_PLATFORM
+ help
+diff --git a/drivers/net/can/c_can/c_can_pci.c b/drivers/net/can/c_can/c_can_pci.c
+index 7be393c96b1a..cf7c18947189 100644
+--- a/drivers/net/can/c_can/c_can_pci.c
++++ b/drivers/net/can/c_can/c_can_pci.c
+@@ -161,6 +161,7 @@ static int c_can_pci_probe(struct pci_dev *pdev,
+
+ dev->irq = pdev->irq;
+ priv->base = addr;
++ priv->device = &pdev->dev;
+
+ if (!c_can_pci_data->freq) {
+ dev_err(&pdev->dev, "no clock frequency defined\n");
+diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
+index e95a9e1a889f..7bb3cf38f346 100644
+--- a/drivers/net/can/ti_hecc.c
++++ b/drivers/net/can/ti_hecc.c
+@@ -951,7 +951,12 @@ static int ti_hecc_probe(struct platform_device *pdev)
+ netif_napi_add(ndev, &priv->napi, ti_hecc_rx_poll,
+ HECC_DEF_NAPI_WEIGHT);
+
+- clk_enable(priv->clk);
++ err = clk_prepare_enable(priv->clk);
++ if (err) {
++ dev_err(&pdev->dev, "clk_prepare_enable() failed\n");
++ goto probe_exit_clk;
++ }
++
+ err = register_candev(ndev);
+ if (err) {
+ dev_err(&pdev->dev, "register_candev() failed\n");
+@@ -984,7 +989,7 @@ static int ti_hecc_remove(struct platform_device *pdev)
+ struct ti_hecc_priv *priv = netdev_priv(ndev);
+
+ unregister_candev(ndev);
+- clk_disable(priv->clk);
++ clk_disable_unprepare(priv->clk);
+ clk_put(priv->clk);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ iounmap(priv->base);
+@@ -1009,7 +1014,7 @@ static int ti_hecc_suspend(struct platform_device *pdev, pm_message_t state)
+ hecc_set_bit(priv, HECC_CANMC, HECC_CANMC_PDR);
+ priv->can.state = CAN_STATE_SLEEPING;
+
+- clk_disable(priv->clk);
++ clk_disable_unprepare(priv->clk);
+
+ return 0;
+ }
+@@ -1018,8 +1023,11 @@ static int ti_hecc_resume(struct platform_device *pdev)
+ {
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct ti_hecc_priv *priv = netdev_priv(dev);
++ int err;
+
+- clk_enable(priv->clk);
++ err = clk_prepare_enable(priv->clk);
++ if (err)
++ return err;
+
+ hecc_clear_bit(priv, HECC_CANMC, HECC_CANMC_PDR);
+ priv->can.state = CAN_STATE_ERROR_ACTIVE;
+diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
+index fd51626e859e..ea1be52f5515 100644
+--- a/drivers/net/xen-netfront.c
++++ b/drivers/net/xen-netfront.c
+@@ -1344,6 +1344,8 @@ static void xennet_disconnect_backend(struct netfront_info *info)
+ for (i = 0; i < num_queues; ++i) {
+ struct netfront_queue *queue = &info->queues[i];
+
++ del_timer_sync(&queue->rx_refill_timer);
++
+ if (queue->tx_irq && (queue->tx_irq == queue->rx_irq))
+ unbind_from_irqhandler(queue->tx_irq, queue);
+ if (queue->tx_irq && (queue->tx_irq != queue->rx_irq)) {
+@@ -1699,7 +1701,6 @@ static void xennet_destroy_queues(struct netfront_info *info)
+
+ if (netif_running(info->netdev))
+ napi_disable(&queue->napi);
+- del_timer_sync(&queue->rx_refill_timer);
+ netif_napi_del(&queue->napi);
+ }
+
+diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
+index 993ff22df7ec..3c4e709cf9a1 100644
+--- a/drivers/pci/probe.c
++++ b/drivers/pci/probe.c
+@@ -982,6 +982,7 @@ void set_pcie_port_type(struct pci_dev *pdev)
+ pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+ if (!pos)
+ return;
++
+ pdev->pcie_cap = pos;
+ pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
+ pdev->pcie_flags_reg = reg16;
+@@ -989,13 +990,14 @@ void set_pcie_port_type(struct pci_dev *pdev)
+ pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
+
+ /*
+- * A Root Port is always the upstream end of a Link. No PCIe
+- * component has two Links. Two Links are connected by a Switch
+- * that has a Port on each Link and internal logic to connect the
+- * two Ports.
++ * A Root Port or a PCI-to-PCIe bridge is always the upstream end
++ * of a Link. No PCIe component has two Links. Two Links are
++ * connected by a Switch that has a Port on each Link and internal
++ * logic to connect the two Ports.
+ */
+ type = pci_pcie_type(pdev);
+- if (type == PCI_EXP_TYPE_ROOT_PORT)
++ if (type == PCI_EXP_TYPE_ROOT_PORT ||
++ type == PCI_EXP_TYPE_PCIE_BRIDGE)
+ pdev->has_secondary_link = 1;
+ else if (type == PCI_EXP_TYPE_UPSTREAM ||
+ type == PCI_EXP_TYPE_DOWNSTREAM) {
+diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
+index e736ecb3b8a4..3c96f23e2896 100644
+--- a/drivers/scsi/aacraid/comminit.c
++++ b/drivers/scsi/aacraid/comminit.c
+@@ -52,9 +52,13 @@ struct aac_common aac_config = {
+
+ static inline int aac_is_msix_mode(struct aac_dev *dev)
+ {
+- u32 status;
++ u32 status = 0;
+
+- status = src_readl(dev, MUnit.OMR);
++ if (dev->pdev->device == PMC_DEVICE_S6 ||
++ dev->pdev->device == PMC_DEVICE_S7 ||
++ dev->pdev->device == PMC_DEVICE_S8) {
++ status = src_readl(dev, MUnit.OMR);
++ }
+ return (status & AAC_INT_MODE_MSIX);
+ }
+
+diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
+index d00725574577..6a5e63460953 100644
+--- a/drivers/scsi/qla2xxx/qla_os.c
++++ b/drivers/scsi/qla2xxx/qla_os.c
+@@ -3365,7 +3365,7 @@ qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
+ sizeof(struct ct6_dsd), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (!ctx_cachep)
+- goto fail_free_gid_list;
++ goto fail_free_srb_mempool;
+ }
+ ha->ctx_mempool = mempool_create_slab_pool(SRB_MIN_REQ,
+ ctx_cachep);
+@@ -3518,7 +3518,7 @@ qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
+ ha->loop_id_map = kzalloc(BITS_TO_LONGS(LOOPID_MAP_SIZE) * sizeof(long),
+ GFP_KERNEL);
+ if (!ha->loop_id_map)
+- goto fail_async_pd;
++ goto fail_loop_id_map;
+ else {
+ qla2x00_set_reserved_loop_ids(ha);
+ ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0123,
+@@ -3527,6 +3527,8 @@ qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
+
+ return 0;
+
++fail_loop_id_map:
++ dma_pool_free(ha->s_dma_pool, ha->async_pd, ha->async_pd_dma);
+ fail_async_pd:
+ dma_pool_free(ha->s_dma_pool, ha->ex_init_cb, ha->ex_init_cb_dma);
+ fail_ex_init_cb:
+@@ -3554,6 +3556,10 @@ fail_free_ms_iocb:
+ dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
+ ha->ms_iocb = NULL;
+ ha->ms_iocb_dma = 0;
++
++ if (ha->sns_cmd)
++ dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
++ ha->sns_cmd, ha->sns_cmd_dma);
+ fail_dma_pool:
+ if (IS_QLA82XX(ha) || ql2xenabledif) {
+ dma_pool_destroy(ha->fcp_cmnd_dma_pool);
+@@ -3571,10 +3577,12 @@ fail_free_nvram:
+ kfree(ha->nvram);
+ ha->nvram = NULL;
+ fail_free_ctx_mempool:
+- mempool_destroy(ha->ctx_mempool);
++ if (ha->ctx_mempool)
++ mempool_destroy(ha->ctx_mempool);
+ ha->ctx_mempool = NULL;
+ fail_free_srb_mempool:
+- mempool_destroy(ha->srb_mempool);
++ if (ha->srb_mempool)
++ mempool_destroy(ha->srb_mempool);
+ ha->srb_mempool = NULL;
+ fail_free_gid_list:
+ dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index 26bc4e9c7441..0cc067ce5715 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -1757,6 +1757,10 @@ sg_start_req(Sg_request *srp, unsigned char *cmd)
+ return res;
+
+ iov_iter_truncate(&i, hp->dxfer_len);
++ if (!iov_iter_count(&i)) {
++ kfree(iov);
++ return -EINVAL;
++ }
+
+ res = blk_rq_map_user_iov(q, rq, md, &i, GFP_ATOMIC);
+ kfree(iov);
+diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
+index 46b966d09af2..35180fbaa460 100644
+--- a/drivers/target/target_core_sbc.c
++++ b/drivers/target/target_core_sbc.c
+@@ -390,6 +390,7 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success,
+ int *post_ret)
+ {
+ struct se_device *dev = cmd->se_dev;
++ sense_reason_t ret = TCM_NO_SENSE;
+
+ /*
+ * Only set SCF_COMPARE_AND_WRITE_POST to force a response fall-through
+@@ -397,9 +398,12 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success,
+ * sent to the backend driver.
+ */
+ spin_lock_irq(&cmd->t_state_lock);
+- if ((cmd->transport_state & CMD_T_SENT) && !cmd->scsi_status) {
++ if (cmd->transport_state & CMD_T_SENT) {
+ cmd->se_cmd_flags |= SCF_COMPARE_AND_WRITE_POST;
+ *post_ret = 1;
++
++ if (cmd->scsi_status == SAM_STAT_CHECK_CONDITION)
++ ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+ }
+ spin_unlock_irq(&cmd->t_state_lock);
+
+@@ -409,7 +413,7 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success,
+ */
+ up(&dev->caw_sem);
+
+- return TCM_NO_SENSE;
++ return ret;
+ }
+
+ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool success,
+diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
+index ddb0d6bc45f2..71778b1e4c7b 100644
+--- a/drivers/target/target_core_xcopy.c
++++ b/drivers/target/target_core_xcopy.c
+@@ -849,7 +849,7 @@ out:
+ " CHECK_CONDITION -> sending response\n", rc);
+ ec_cmd->scsi_status = SAM_STAT_CHECK_CONDITION;
+ }
+- target_complete_cmd(ec_cmd, SAM_STAT_CHECK_CONDITION);
++ target_complete_cmd(ec_cmd, ec_cmd->scsi_status);
+ }
+
+ sense_reason_t target_do_xcopy(struct se_cmd *se_cmd)
+diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
+index 9ffdfcf2ec6e..2f7cfa5c7b8b 100644
+--- a/drivers/tty/sysrq.c
++++ b/drivers/tty/sysrq.c
+@@ -929,8 +929,8 @@ static const struct input_device_id sysrq_ids[] = {
+ {
+ .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
+ INPUT_DEVICE_ID_MATCH_KEYBIT,
+- .evbit = { BIT_MASK(EV_KEY) },
+- .keybit = { BIT_MASK(KEY_LEFTALT) },
++ .evbit = { [BIT_WORD(EV_KEY)] = BIT_MASK(EV_KEY) },
++ .keybit = { [BIT_WORD(KEY_LEFTALT)] = BIT_MASK(KEY_LEFTALT) },
+ },
+ { },
+ };
+diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
+index 81336acc7040..70af0804465c 100644
+--- a/drivers/usb/core/config.c
++++ b/drivers/usb/core/config.c
+@@ -178,6 +178,16 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
+ if (ifp->desc.bNumEndpoints >= num_ep)
+ goto skip_to_next_endpoint_or_interface_descriptor;
+
++ /* Check for duplicate endpoint addresses */
++ for (i = 0; i < ifp->desc.bNumEndpoints; ++i) {
++ if (ifp->endpoint[i].desc.bEndpointAddress ==
++ d->bEndpointAddress) {
++ dev_warn(ddev, "config %d interface %d altsetting %d has a duplicate endpoint with address 0x%X, skipping\n",
++ cfgno, inum, asnum, d->bEndpointAddress);
++ goto skip_to_next_endpoint_or_interface_descriptor;
++ }
++ }
++
+ endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
+ ++ifp->desc.bNumEndpoints;
+
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index d2e50a27140c..24f9f98968a5 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -37,6 +37,10 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* CBM - Flash disk */
+ { USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME },
+
++ /* WORLDE easy key (easykey.25) MIDI controller */
++ { USB_DEVICE(0x0218, 0x0401), .driver_info =
++ USB_QUIRK_CONFIG_INTF_STRINGS },
++
+ /* HP 5300/5370C scanner */
+ { USB_DEVICE(0x03f0, 0x0701), .driver_info =
+ USB_QUIRK_STRING_FETCH_255 },
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index a5e1b8b39ff5..1e51ded8607a 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -259,11 +259,11 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
+ if (req->request.status == -EINPROGRESS)
+ req->request.status = status;
+
+- if (dwc->ep0_bounced && dep->number == 0)
++ if (dwc->ep0_bounced && dep->number <= 1)
+ dwc->ep0_bounced = false;
+- else
+- usb_gadget_unmap_request(&dwc->gadget, &req->request,
+- req->direction);
++
++ usb_gadget_unmap_request(&dwc->gadget, &req->request,
++ req->direction);
+
+ dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n",
+ req, dep->name, req->request.actual,
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index 9cd76cc8c0d9..d17304ae0b42 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -1563,9 +1563,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+ value = min(w_length, (u16) 1);
+ break;
+
+- /* function drivers must handle get/set altsetting; if there's
+- * no get() method, we know only altsetting zero works.
+- */
++ /* function drivers must handle get/set altsetting */
+ case USB_REQ_SET_INTERFACE:
+ if (ctrl->bRequestType != USB_RECIP_INTERFACE)
+ goto unknown;
+@@ -1574,7 +1572,13 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+ f = cdev->config->interface[intf];
+ if (!f)
+ break;
+- if (w_value && !f->set_alt)
++
++ /*
++ * If there's no get_alt() method, we know only altsetting zero
++ * works. There is no need to check if set_alt() is not NULL
++ * as we check this in usb_add_function().
++ */
++ if (w_value && !f->get_alt)
+ break;
+ value = f->set_alt(f, w_index, w_value);
+ if (value == USB_GADGET_DELAYED_STATUS) {
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index db9433eed2cc..71c7d1db784f 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -2079,6 +2079,8 @@ static int __ffs_data_do_os_desc(enum ffs_os_desc_type type,
+ if (len < sizeof(*d) || h->interface >= ffs->interfaces_count)
+ return -EINVAL;
+ length = le32_to_cpu(d->dwSize);
++ if (len < length)
++ return -EINVAL;
+ type = le32_to_cpu(d->dwPropertyDataType);
+ if (type < USB_EXT_PROP_UNICODE ||
+ type > USB_EXT_PROP_UNICODE_MULTI) {
+@@ -2087,6 +2089,11 @@ static int __ffs_data_do_os_desc(enum ffs_os_desc_type type,
+ return -EINVAL;
+ }
+ pnl = le16_to_cpu(d->wPropertyNameLength);
++ if (length < 14 + pnl) {
++ pr_vdebug("invalid os descriptor length: %d pnl:%d (descriptor %d)\n",
++ length, pnl, type);
++ return -EINVAL;
++ }
+ pdl = le32_to_cpu(*(u32 *)((u8 *)data + 10 + pnl));
+ if (length != 14 + pnl + pdl) {
+ pr_vdebug("invalid os descriptor length: %d pnl:%d pdl:%d (descriptor %d)\n",
+@@ -2171,6 +2178,9 @@ static int __ffs_data_got_descs(struct ffs_data *ffs,
+ }
+ }
+ if (flags & (1 << i)) {
++ if (len < 4) {
++ goto error;
++ }
+ os_descs_count = get_unaligned_le32(data);
+ data += 4;
+ len -= 4;
+@@ -2243,7 +2253,8 @@ static int __ffs_data_got_strings(struct ffs_data *ffs,
+
+ ENTER();
+
+- if (unlikely(get_unaligned_le32(data) != FUNCTIONFS_STRINGS_MAGIC ||
++ if (unlikely(len < 16 ||
++ get_unaligned_le32(data) != FUNCTIONFS_STRINGS_MAGIC ||
+ get_unaligned_le32(data + 4) != len))
+ goto error;
+ str_count = get_unaligned_le32(data + 8);
+diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
+index bccc5788bb98..44e74fd3a80a 100644
+--- a/drivers/usb/gadget/legacy/inode.c
++++ b/drivers/usb/gadget/legacy/inode.c
+@@ -1122,7 +1122,7 @@ ep0_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
+ /* data and/or status stage for control request */
+ } else if (dev->state == STATE_DEV_SETUP) {
+
+- /* IN DATA+STATUS caller makes len <= wLength */
++ len = min_t(size_t, len, dev->setup_wLength);
+ if (dev->setup_in) {
+ retval = setup_req (dev->gadget->ep0, dev->req, len);
+ if (retval == 0) {
+@@ -1752,10 +1752,12 @@ static struct usb_gadget_driver probe_driver = {
+ * such as configuration notifications.
+ */
+
+-static int is_valid_config (struct usb_config_descriptor *config)
++static int is_valid_config(struct usb_config_descriptor *config,
++ unsigned int total)
+ {
+ return config->bDescriptorType == USB_DT_CONFIG
+ && config->bLength == USB_DT_CONFIG_SIZE
++ && total >= USB_DT_CONFIG_SIZE
+ && config->bConfigurationValue != 0
+ && (config->bmAttributes & USB_CONFIG_ATT_ONE) != 0
+ && (config->bmAttributes & USB_CONFIG_ATT_WAKEUP) == 0;
+@@ -1780,7 +1782,8 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
+ }
+ spin_unlock_irq(&dev->lock);
+
+- if (len < (USB_DT_CONFIG_SIZE + USB_DT_DEVICE_SIZE + 4))
++ if ((len < (USB_DT_CONFIG_SIZE + USB_DT_DEVICE_SIZE + 4)) ||
++ (len > PAGE_SIZE * 4))
+ return -EINVAL;
+
+ /* we might need to change message format someday */
+@@ -1804,7 +1807,8 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
+ /* full or low speed config */
+ dev->config = (void *) kbuf;
+ total = le16_to_cpu(dev->config->wTotalLength);
+- if (!is_valid_config (dev->config) || total >= length)
++ if (!is_valid_config(dev->config, total) ||
++ total > length - USB_DT_DEVICE_SIZE)
+ goto fail;
+ kbuf += total;
+ length -= total;
+@@ -1813,10 +1817,13 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
+ if (kbuf [1] == USB_DT_CONFIG) {
+ dev->hs_config = (void *) kbuf;
+ total = le16_to_cpu(dev->hs_config->wTotalLength);
+- if (!is_valid_config (dev->hs_config) || total >= length)
++ if (!is_valid_config(dev->hs_config, total) ||
++ total > length - USB_DT_DEVICE_SIZE)
+ goto fail;
+ kbuf += total;
+ length -= total;
++ } else {
++ dev->hs_config = NULL;
+ }
+
+ /* could support multiple configs, using another encoding! */
+diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
+index 181112c88f43..3300091e0e2a 100644
+--- a/drivers/usb/gadget/udc/dummy_hcd.c
++++ b/drivers/usb/gadget/udc/dummy_hcd.c
+@@ -266,7 +266,7 @@ static void nuke(struct dummy *dum, struct dummy_ep *ep)
+ /* caller must hold lock */
+ static void stop_activity(struct dummy *dum)
+ {
+- struct dummy_ep *ep;
++ int i;
+
+ /* prevent any more requests */
+ dum->address = 0;
+@@ -274,8 +274,8 @@ static void stop_activity(struct dummy *dum)
+ /* The timer is left running so that outstanding URBs can fail */
+
+ /* nuke any pending requests first, so driver i/o is quiesced */
+- list_for_each_entry(ep, &dum->gadget.ep_list, ep.ep_list)
+- nuke(dum, ep);
++ for (i = 0; i < DUMMY_ENDPOINTS; ++i)
++ nuke(dum, &dum->ep[i]);
+
+ /* driver now does any non-usb quiescing necessary */
+ }
+diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
+index 5ab70afd5624..bd06e3a907fa 100644
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -964,6 +964,40 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id)
+ xhci->devs[slot_id] = NULL;
+ }
+
++/*
++ * Free a virt_device structure.
++ * If the virt_device added a tt_info (a hub) and has children pointing to
++ * that tt_info, then free the child first. Recursive.
++ * We can't rely on udev at this point to find child-parent relationships.
++ */
++void xhci_free_virt_devices_depth_first(struct xhci_hcd *xhci, int slot_id)
++{
++ struct xhci_virt_device *vdev;
++ struct list_head *tt_list_head;
++ struct xhci_tt_bw_info *tt_info, *next;
++ int i;
++
++ vdev = xhci->devs[slot_id];
++ if (!vdev)
++ return;
++
++ tt_list_head = &(xhci->rh_bw[vdev->real_port - 1].tts);
++ list_for_each_entry_safe(tt_info, next, tt_list_head, tt_list) {
++ /* is this a hub device that added a tt_info to the tts list */
++ if (tt_info->slot_id == slot_id) {
++ /* are any devices using this tt_info? */
++ for (i = 1; i < HCS_MAX_SLOTS(xhci->hcs_params1); i++) {
++ vdev = xhci->devs[i];
++ if (vdev && (vdev->tt_info == tt_info))
++ xhci_free_virt_devices_depth_first(
++ xhci, i);
++ }
++ }
++ }
++ /* we are now at a leaf device */
++ xhci_free_virt_device(xhci, slot_id);
++}
++
+ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
+ struct usb_device *udev, gfp_t flags)
+ {
+@@ -1825,8 +1859,8 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
+ }
+ }
+
+- for (i = 1; i < MAX_HC_SLOTS; ++i)
+- xhci_free_virt_device(xhci, i);
++ for (i = HCS_MAX_SLOTS(xhci->hcs_params1); i > 0; i--)
++ xhci_free_virt_devices_depth_first(xhci, i);
+
+ if (xhci->segment_pool)
+ dma_pool_destroy(xhci->segment_pool);
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index fc60a9e8a129..bb47ea2c9c39 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -159,7 +159,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI ||
+- pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI)) {
++ pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI ||
++ pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI)) {
+ xhci->quirks |= XHCI_PME_STUCK_QUIRK;
+ }
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index 2d8e77ff7821..7c08c7175c01 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -846,17 +846,6 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg)
+ spin_lock_irqsave(&xhci->lock, flags);
+
+ ep->stop_cmds_pending--;
+- if (xhci->xhc_state & XHCI_STATE_REMOVING) {
+- spin_unlock_irqrestore(&xhci->lock, flags);
+- return;
+- }
+- if (xhci->xhc_state & XHCI_STATE_DYING) {
+- xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+- "Stop EP timer ran, but another timer marked "
+- "xHCI as DYING, exiting.");
+- spin_unlock_irqrestore(&xhci->lock, flags);
+- return;
+- }
+ if (!(ep->stop_cmds_pending == 0 && (ep->ep_state & EP_HALT_PENDING))) {
+ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+ "Stop EP timer ran, but no command pending, "
+@@ -1268,41 +1257,54 @@ void xhci_handle_command_timeout(unsigned long data)
+ bool second_timeout = false;
+ xhci = (struct xhci_hcd *) data;
+
+- /* mark this command to be cancelled */
+ spin_lock_irqsave(&xhci->lock, flags);
+- if (xhci->current_cmd) {
+- if (xhci->current_cmd->status == COMP_CMD_ABORT)
+- second_timeout = true;
+- xhci->current_cmd->status = COMP_CMD_ABORT;
++
++ /*
++ * If timeout work is pending, or current_cmd is NULL, it means we
++ * raced with command completion. Command is handled so just return.
++ */
++ if (!xhci->current_cmd || timer_pending(&xhci->cmd_timer)) {
++ spin_unlock_irqrestore(&xhci->lock, flags);
++ return;
+ }
+
++ /* mark this command to be cancelled */
++ if (xhci->current_cmd->status == COMP_CMD_ABORT)
++ second_timeout = true;
++ xhci->current_cmd->status = COMP_CMD_ABORT;
++
+ /* Make sure command ring is running before aborting it */
+ hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring);
+ if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) &&
+ (hw_ring_state & CMD_RING_RUNNING)) {
+- spin_unlock_irqrestore(&xhci->lock, flags);
+ xhci_dbg(xhci, "Command timeout\n");
+ ret = xhci_abort_cmd_ring(xhci);
+ if (unlikely(ret == -ESHUTDOWN)) {
+ xhci_err(xhci, "Abort command ring failed\n");
+ xhci_cleanup_command_queue(xhci);
++ spin_unlock_irqrestore(&xhci->lock, flags);
+ usb_hc_died(xhci_to_hcd(xhci)->primary_hcd);
+ xhci_dbg(xhci, "xHCI host controller is dead.\n");
++
++ return;
+ }
+- return;
++
++ goto time_out_completed;
+ }
+
+ /* command ring failed to restart, or host removed. Bail out */
+ if (second_timeout || xhci->xhc_state & XHCI_STATE_REMOVING) {
+- spin_unlock_irqrestore(&xhci->lock, flags);
+ xhci_dbg(xhci, "command timed out twice, ring start fail?\n");
+ xhci_cleanup_command_queue(xhci);
+- return;
++
++ goto time_out_completed;
+ }
+
+ /* command timeout on stopped ring, ring can't be aborted */
+ xhci_dbg(xhci, "Command timeout on stopped ring\n");
+ xhci_handle_stopped_cmd_ring(xhci, xhci->current_cmd);
++
++time_out_completed:
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ return;
+ }
+@@ -1361,8 +1363,11 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
+ */
+ if (cmd_comp_code == COMP_CMD_ABORT) {
+ xhci->cmd_ring_state = CMD_RING_STATE_STOPPED;
+- if (cmd->status == COMP_CMD_ABORT)
++ if (cmd->status == COMP_CMD_ABORT) {
++ if (xhci->current_cmd == cmd)
++ xhci->current_cmd = NULL;
+ goto event_handled;
++ }
+ }
+
+ cmd_type = TRB_FIELD_TO_TYPE(le32_to_cpu(cmd_trb->generic.field[3]));
+@@ -1424,6 +1429,8 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
+ xhci->current_cmd = list_entry(cmd->cmd_list.next,
+ struct xhci_command, cmd_list);
+ mod_timer(&xhci->cmd_timer, jiffies + XHCI_CMD_DEFAULT_TIMEOUT);
++ } else if (xhci->current_cmd == cmd) {
++ xhci->current_cmd = NULL;
+ }
+
+ event_handled:
+diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
+index 896b928f7412..8ae4f9f50b6f 100644
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -1576,19 +1576,6 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+ xhci_urb_free_priv(urb_priv);
+ return ret;
+ }
+- if ((xhci->xhc_state & XHCI_STATE_DYING) ||
+- (xhci->xhc_state & XHCI_STATE_HALTED)) {
+- xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+- "Ep 0x%x: URB %p to be canceled on "
+- "non-responsive xHCI host.",
+- urb->ep->desc.bEndpointAddress, urb);
+- /* Let the stop endpoint command watchdog timer (which set this
+- * state) finish cleaning up the endpoint TD lists. We must
+- * have caught it in the middle of dropping a lock and giving
+- * back an URB.
+- */
+- goto done;
+- }
+
+ ep_index = xhci_get_endpoint_index(&urb->ep->desc);
+ ep = &xhci->devs[urb->dev->slot_id]->eps[ep_index];
+diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
+index 3877249a8b2d..4a1182354e98 100644
+--- a/drivers/usb/musb/musb_core.h
++++ b/drivers/usb/musb/musb_core.h
+@@ -205,6 +205,7 @@ struct musb_platform_ops {
+ int (*adjust_channel_params)(struct dma_channel *channel,
+ u16 packet_sz, u8 *mode,
+ dma_addr_t *dma_addr, u32 *len);
++ void (*clear_ep_rxintr)(struct musb *musb, int epnum);
+ };
+
+ /*
+@@ -590,4 +591,10 @@ static inline int musb_platform_exit(struct musb *musb)
+ return musb->ops->exit(musb);
+ }
+
++static inline void musb_platform_clear_ep_rxintr(struct musb *musb, int epnum)
++{
++ if (musb->ops->clear_ep_rxintr)
++ musb->ops->clear_ep_rxintr(musb, epnum);
++}
++
+ #endif /* __MUSB_CORE_H__ */
+diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
+index dcac5e7f19e0..fad6d5b92df9 100644
+--- a/drivers/usb/musb/musb_dsps.c
++++ b/drivers/usb/musb/musb_dsps.c
+@@ -301,6 +301,17 @@ static void otg_timer(unsigned long _musb)
+ spin_unlock_irqrestore(&musb->lock, flags);
+ }
+
++void dsps_musb_clear_ep_rxintr(struct musb *musb, int epnum)
++{
++ u32 epintr;
++ struct dsps_glue *glue = dev_get_drvdata(musb->controller->parent);
++ const struct dsps_musb_wrapper *wrp = glue->wrp;
++
++ /* musb->lock might already been held */
++ epintr = (1 << epnum) << wrp->rxep_shift;
++ musb_writel(musb->ctrl_base, wrp->epintr_status, epintr);
++}
++
+ static irqreturn_t dsps_interrupt(int irq, void *hci)
+ {
+ struct musb *musb = hci;
+@@ -647,6 +658,7 @@ static struct musb_platform_ops dsps_ops = {
+ .try_idle = dsps_musb_try_idle,
+ .set_mode = dsps_musb_set_mode,
+ .recover = dsps_musb_recover,
++ .clear_ep_rxintr = dsps_musb_clear_ep_rxintr,
+ };
+
+ static u64 musb_dmamask = DMA_BIT_MASK(32);
+diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
+index 06853d7c89fd..1d0c096c1b84 100644
+--- a/drivers/usb/musb/musb_host.c
++++ b/drivers/usb/musb/musb_host.c
+@@ -2273,12 +2273,11 @@ static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh)
+ int is_in = usb_pipein(urb->pipe);
+ int status = 0;
+ u16 csr;
++ struct dma_channel *dma = NULL;
+
+ musb_ep_select(regs, hw_end);
+
+ if (is_dma_capable()) {
+- struct dma_channel *dma;
+-
+ dma = is_in ? ep->rx_channel : ep->tx_channel;
+ if (dma) {
+ status = ep->musb->dma_controller->channel_abort(dma);
+@@ -2295,10 +2294,9 @@ static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh)
+ /* giveback saves bulk toggle */
+ csr = musb_h_flush_rxfifo(ep, 0);
+
+- /* REVISIT we still get an irq; should likely clear the
+- * endpoint's irq status here to avoid bogus irqs.
+- * clearing that status is platform-specific...
+- */
++ /* clear the endpoint's irq status here to avoid bogus irqs */
++ if (is_dma_capable() && dma)
++ musb_platform_clear_ep_rxintr(musb, ep->epnum);
+ } else if (ep->epnum) {
+ musb_h_tx_flush_fifo(ep);
+ csr = musb_readw(epio, MUSB_TXCSR);
+diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
+index c73808f095bb..a9fb5838e717 100644
+--- a/drivers/usb/serial/ch341.c
++++ b/drivers/usb/serial/ch341.c
+@@ -99,6 +99,8 @@ static int ch341_control_out(struct usb_device *dev, u8 request,
+ r = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+ value, index, NULL, 0, DEFAULT_TIMEOUT);
++ if (r < 0)
++ dev_err(&dev->dev, "failed to send control message: %d\n", r);
+
+ return r;
+ }
+@@ -116,7 +118,20 @@ static int ch341_control_in(struct usb_device *dev,
+ r = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+ value, index, buf, bufsize, DEFAULT_TIMEOUT);
+- return r;
++ if (r < bufsize) {
++ if (r >= 0) {
++ dev_err(&dev->dev,
++ "short control message received (%d < %u)\n",
++ r, bufsize);
++ r = -EIO;
++ }
++
++ dev_err(&dev->dev, "failed to receive control message: %d\n",
++ r);
++ return r;
++ }
++
++ return 0;
+ }
+
+ static int ch341_set_baudrate(struct usb_device *dev,
+@@ -158,9 +173,9 @@ static int ch341_set_handshake(struct usb_device *dev, u8 control)
+
+ static int ch341_get_status(struct usb_device *dev, struct ch341_private *priv)
+ {
++ const unsigned int size = 2;
+ char *buffer;
+ int r;
+- const unsigned size = 8;
+ unsigned long flags;
+
+ buffer = kmalloc(size, GFP_KERNEL);
+@@ -171,14 +186,9 @@ static int ch341_get_status(struct usb_device *dev, struct ch341_private *priv)
+ if (r < 0)
+ goto out;
+
+- /* setup the private status if available */
+- if (r == 2) {
+- r = 0;
+- spin_lock_irqsave(&priv->lock, flags);
+- priv->line_status = (~(*buffer)) & CH341_BITS_MODEM_STAT;
+- spin_unlock_irqrestore(&priv->lock, flags);
+- } else
+- r = -EPROTO;
++ spin_lock_irqsave(&priv->lock, flags);
++ priv->line_status = (~(*buffer)) & CH341_BITS_MODEM_STAT;
++ spin_unlock_irqrestore(&priv->lock, flags);
+
+ out: kfree(buffer);
+ return r;
+@@ -188,9 +198,9 @@ out: kfree(buffer);
+
+ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv)
+ {
++ const unsigned int size = 2;
+ char *buffer;
+ int r;
+- const unsigned size = 8;
+
+ buffer = kmalloc(size, GFP_KERNEL);
+ if (!buffer)
+@@ -253,7 +263,6 @@ static int ch341_port_probe(struct usb_serial_port *port)
+
+ spin_lock_init(&priv->lock);
+ priv->baud_rate = DEFAULT_BAUD_RATE;
+- priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR;
+
+ r = ch341_configure(port->serial->dev, priv);
+ if (r < 0)
+@@ -315,7 +324,7 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port)
+
+ r = ch341_configure(serial->dev, priv);
+ if (r)
+- goto out;
++ return r;
+
+ if (tty)
+ ch341_set_termios(tty, port, NULL);
+@@ -325,12 +334,19 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port)
+ if (r) {
+ dev_err(&port->dev, "%s - failed to submit interrupt urb: %d\n",
+ __func__, r);
+- goto out;
++ return r;
+ }
+
+ r = usb_serial_generic_open(tty, port);
++ if (r)
++ goto err_kill_interrupt_urb;
++
++ return 0;
++
++err_kill_interrupt_urb:
++ usb_kill_urb(port->interrupt_in_urb);
+
+-out: return r;
++ return r;
+ }
+
+ /* Old_termios contains the original termios settings and
+@@ -345,26 +361,25 @@ static void ch341_set_termios(struct tty_struct *tty,
+
+ baud_rate = tty_get_baud_rate(tty);
+
+- priv->baud_rate = baud_rate;
+-
+ if (baud_rate) {
+- spin_lock_irqsave(&priv->lock, flags);
+- priv->line_control |= (CH341_BIT_DTR | CH341_BIT_RTS);
+- spin_unlock_irqrestore(&priv->lock, flags);
++ priv->baud_rate = baud_rate;
+ ch341_set_baudrate(port->serial->dev, priv);
+- } else {
+- spin_lock_irqsave(&priv->lock, flags);
+- priv->line_control &= ~(CH341_BIT_DTR | CH341_BIT_RTS);
+- spin_unlock_irqrestore(&priv->lock, flags);
+ }
+
+- ch341_set_handshake(port->serial->dev, priv->line_control);
+-
+ /* Unimplemented:
+ * (cflag & CSIZE) : data bits [5, 8]
+ * (cflag & PARENB) : parity {NONE, EVEN, ODD}
+ * (cflag & CSTOPB) : stop bits [1, 2]
+ */
++
++ spin_lock_irqsave(&priv->lock, flags);
++ if (C_BAUD(tty) == B0)
++ priv->line_control &= ~(CH341_BIT_DTR | CH341_BIT_RTS);
++ else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
++ priv->line_control |= (CH341_BIT_DTR | CH341_BIT_RTS);
++ spin_unlock_irqrestore(&priv->lock, flags);
++
++ ch341_set_handshake(port->serial->dev, priv->line_control);
+ }
+
+ static void ch341_break_ctl(struct tty_struct *tty, int break_state)
+diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
+index 2916dea3ede8..8948f375e75d 100644
+--- a/drivers/usb/serial/cyberjack.c
++++ b/drivers/usb/serial/cyberjack.c
+@@ -50,6 +50,7 @@
+ #define CYBERJACK_PRODUCT_ID 0x0100
+
+ /* Function prototypes */
++static int cyberjack_attach(struct usb_serial *serial);
+ static int cyberjack_port_probe(struct usb_serial_port *port);
+ static int cyberjack_port_remove(struct usb_serial_port *port);
+ static int cyberjack_open(struct tty_struct *tty,
+@@ -77,6 +78,7 @@ static struct usb_serial_driver cyberjack_device = {
+ .description = "Reiner SCT Cyberjack USB card reader",
+ .id_table = id_table,
+ .num_ports = 1,
++ .attach = cyberjack_attach,
+ .port_probe = cyberjack_port_probe,
+ .port_remove = cyberjack_port_remove,
+ .open = cyberjack_open,
+@@ -100,6 +102,14 @@ struct cyberjack_private {
+ short wrsent; /* Data already sent */
+ };
+
++static int cyberjack_attach(struct usb_serial *serial)
++{
++ if (serial->num_bulk_out < serial->num_ports)
++ return -ENODEV;
++
++ return 0;
++}
++
+ static int cyberjack_port_probe(struct usb_serial_port *port)
+ {
+ struct cyberjack_private *priv;
+diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
+index db591d19d416..37d0e8cc7af6 100644
+--- a/drivers/usb/serial/garmin_gps.c
++++ b/drivers/usb/serial/garmin_gps.c
+@@ -1044,6 +1044,7 @@ static int garmin_write_bulk(struct usb_serial_port *port,
+ "%s - usb_submit_urb(write bulk) failed with status = %d\n",
+ __func__, status);
+ count = status;
++ kfree(buffer);
+ }
+
+ /* we are done with this urb, so let the host driver
+diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
+index 1947ea0e0988..b63a6c3899c5 100644
+--- a/drivers/usb/serial/io_edgeport.c
++++ b/drivers/usb/serial/io_edgeport.c
+@@ -2761,6 +2761,11 @@ static int edge_startup(struct usb_serial *serial)
+ EDGE_COMPATIBILITY_MASK1,
+ EDGE_COMPATIBILITY_MASK2 };
+
++ if (serial->num_bulk_in < 1 || serial->num_interrupt_in < 1) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ return -ENODEV;
++ }
++
+ dev = serial->dev;
+
+ /* create our private serial structure */
+diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
+index ddbb8fe1046d..2ef757f35162 100644
+--- a/drivers/usb/serial/io_ti.c
++++ b/drivers/usb/serial/io_ti.c
+@@ -2378,6 +2378,13 @@ static int edge_startup(struct usb_serial *serial)
+ struct edgeport_serial *edge_serial;
+ int status;
+
++ /* Make sure we have the required endpoints when in download mode. */
++ if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) {
++ if (serial->num_bulk_in < serial->num_ports ||
++ serial->num_bulk_out < serial->num_ports)
++ return -ENODEV;
++ }
++
+ /* create our private serial structure */
+ edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
+ if (!edge_serial)
+diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
+index 5ad4a0fb4b26..7ed7d33d6c10 100644
+--- a/drivers/usb/serial/iuu_phoenix.c
++++ b/drivers/usb/serial/iuu_phoenix.c
+@@ -68,6 +68,16 @@ struct iuu_private {
+ u32 clk;
+ };
+
++static int iuu_attach(struct usb_serial *serial)
++{
++ unsigned char num_ports = serial->num_ports;
++
++ if (serial->num_bulk_in < num_ports || serial->num_bulk_out < num_ports)
++ return -ENODEV;
++
++ return 0;
++}
++
+ static int iuu_port_probe(struct usb_serial_port *port)
+ {
+ struct iuu_private *priv;
+@@ -1196,6 +1206,7 @@ static struct usb_serial_driver iuu_device = {
+ .tiocmset = iuu_tiocmset,
+ .set_termios = iuu_set_termios,
+ .init_termios = iuu_init_termios,
++ .attach = iuu_attach,
+ .port_probe = iuu_port_probe,
+ .port_remove = iuu_port_remove,
+ };
+diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
+index 4f7e072e4e00..930be98d59b3 100644
+--- a/drivers/usb/serial/keyspan_pda.c
++++ b/drivers/usb/serial/keyspan_pda.c
+@@ -699,6 +699,19 @@ MODULE_FIRMWARE("keyspan_pda/keyspan_pda.fw");
+ MODULE_FIRMWARE("keyspan_pda/xircom_pgs.fw");
+ #endif
+
++static int keyspan_pda_attach(struct usb_serial *serial)
++{
++ unsigned char num_ports = serial->num_ports;
++
++ if (serial->num_bulk_out < num_ports ||
++ serial->num_interrupt_in < num_ports) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ return -ENODEV;
++ }
++
++ return 0;
++}
++
+ static int keyspan_pda_port_probe(struct usb_serial_port *port)
+ {
+
+@@ -776,6 +789,7 @@ static struct usb_serial_driver keyspan_pda_device = {
+ .break_ctl = keyspan_pda_break_ctl,
+ .tiocmget = keyspan_pda_tiocmget,
+ .tiocmset = keyspan_pda_tiocmset,
++ .attach = keyspan_pda_attach,
+ .port_probe = keyspan_pda_port_probe,
+ .port_remove = keyspan_pda_port_remove,
+ };
+diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
+index 53c90131764d..28cd1d05ed58 100644
+--- a/drivers/usb/serial/kl5kusb105.c
++++ b/drivers/usb/serial/kl5kusb105.c
+@@ -192,10 +192,11 @@ static int klsi_105_get_line_state(struct usb_serial_port *port,
+ status_buf, KLSI_STATUSBUF_LEN,
+ 10000
+ );
+- if (rc < 0)
+- dev_err(&port->dev, "Reading line status failed (error = %d)\n",
+- rc);
+- else {
++ if (rc != KLSI_STATUSBUF_LEN) {
++ dev_err(&port->dev, "reading line status failed: %d\n", rc);
++ if (rc >= 0)
++ rc = -EIO;
++ } else {
+ status = get_unaligned_le16(status_buf);
+
+ dev_info(&port->serial->dev->dev, "read status %x %x\n",
+diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
+index 2363654cafc9..813035f51fe7 100644
+--- a/drivers/usb/serial/kobil_sct.c
++++ b/drivers/usb/serial/kobil_sct.c
+@@ -51,6 +51,7 @@
+
+
+ /* Function prototypes */
++static int kobil_attach(struct usb_serial *serial);
+ static int kobil_port_probe(struct usb_serial_port *probe);
+ static int kobil_port_remove(struct usb_serial_port *probe);
+ static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
+@@ -86,6 +87,7 @@ static struct usb_serial_driver kobil_device = {
+ .description = "KOBIL USB smart card terminal",
+ .id_table = id_table,
+ .num_ports = 1,
++ .attach = kobil_attach,
+ .port_probe = kobil_port_probe,
+ .port_remove = kobil_port_remove,
+ .ioctl = kobil_ioctl,
+@@ -113,6 +115,16 @@ struct kobil_private {
+ };
+
+
++static int kobil_attach(struct usb_serial *serial)
++{
++ if (serial->num_interrupt_out < serial->num_ports) {
++ dev_err(&serial->interface->dev, "missing interrupt-out endpoint\n");
++ return -ENODEV;
++ }
++
++ return 0;
++}
++
+ static int kobil_port_probe(struct usb_serial_port *port)
+ {
+ struct usb_serial *serial = port->serial;
+diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
+index 9a0c610d85a9..3c0552df5e37 100644
+--- a/drivers/usb/serial/mos7720.c
++++ b/drivers/usb/serial/mos7720.c
+@@ -65,8 +65,6 @@ struct moschip_port {
+ struct urb *write_urb_pool[NUM_URBS];
+ };
+
+-static struct usb_serial_driver moschip7720_2port_driver;
+-
+ #define USB_VENDOR_ID_MOSCHIP 0x9710
+ #define MOSCHIP_DEVICE_ID_7720 0x7720
+ #define MOSCHIP_DEVICE_ID_7715 0x7715
+@@ -962,25 +960,6 @@ static void mos7720_bulk_out_data_callback(struct urb *urb)
+ tty_port_tty_wakeup(&mos7720_port->port->port);
+ }
+
+-/*
+- * mos77xx_probe
+- * this function installs the appropriate read interrupt endpoint callback
+- * depending on whether the device is a 7720 or 7715, thus avoiding costly
+- * run-time checks in the high-frequency callback routine itself.
+- */
+-static int mos77xx_probe(struct usb_serial *serial,
+- const struct usb_device_id *id)
+-{
+- if (id->idProduct == MOSCHIP_DEVICE_ID_7715)
+- moschip7720_2port_driver.read_int_callback =
+- mos7715_interrupt_callback;
+- else
+- moschip7720_2port_driver.read_int_callback =
+- mos7720_interrupt_callback;
+-
+- return 0;
+-}
+-
+ static int mos77xx_calc_num_ports(struct usb_serial *serial)
+ {
+ u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
+@@ -1897,6 +1876,11 @@ static int mos7720_startup(struct usb_serial *serial)
+ u16 product;
+ int ret_val;
+
++ if (serial->num_bulk_in < 2 || serial->num_bulk_out < 2) {
++ dev_err(&serial->interface->dev, "missing bulk endpoints\n");
++ return -ENODEV;
++ }
++
+ product = le16_to_cpu(serial->dev->descriptor.idProduct);
+ dev = serial->dev;
+
+@@ -1921,19 +1905,18 @@ static int mos7720_startup(struct usb_serial *serial)
+ tmp->interrupt_in_endpointAddress;
+ serial->port[1]->interrupt_in_urb = NULL;
+ serial->port[1]->interrupt_in_buffer = NULL;
++
++ if (serial->port[0]->interrupt_in_urb) {
++ struct urb *urb = serial->port[0]->interrupt_in_urb;
++
++ urb->complete = mos7715_interrupt_callback;
++ }
+ }
+
+ /* setting configuration feature to one */
+ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5000);
+
+- /* start the interrupt urb */
+- ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL);
+- if (ret_val)
+- dev_err(&dev->dev,
+- "%s - Error %d submitting control urb\n",
+- __func__, ret_val);
+-
+ #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT
+ if (product == MOSCHIP_DEVICE_ID_7715) {
+ ret_val = mos7715_parport_init(serial);
+@@ -1941,6 +1924,13 @@ static int mos7720_startup(struct usb_serial *serial)
+ return ret_val;
+ }
+ #endif
++ /* start the interrupt urb */
++ ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL);
++ if (ret_val) {
++ dev_err(&dev->dev, "failed to submit interrupt urb: %d\n",
++ ret_val);
++ }
++
+ /* LSR For Port 1 */
+ read_mos_reg(serial, 0, LSR, &data);
+ dev_dbg(&dev->dev, "LSR:%x\n", data);
+@@ -1950,6 +1940,8 @@ static int mos7720_startup(struct usb_serial *serial)
+
+ static void mos7720_release(struct usb_serial *serial)
+ {
++ usb_kill_urb(serial->port[0]->interrupt_in_urb);
++
+ #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT
+ /* close the parallel port */
+
+@@ -2032,7 +2024,6 @@ static struct usb_serial_driver moschip7720_2port_driver = {
+ .close = mos7720_close,
+ .throttle = mos7720_throttle,
+ .unthrottle = mos7720_unthrottle,
+- .probe = mos77xx_probe,
+ .attach = mos7720_startup,
+ .release = mos7720_release,
+ .port_probe = mos7720_port_probe,
+@@ -2046,7 +2037,7 @@ static struct usb_serial_driver moschip7720_2port_driver = {
+ .chars_in_buffer = mos7720_chars_in_buffer,
+ .break_ctl = mos7720_break,
+ .read_bulk_callback = mos7720_bulk_in_callback,
+- .read_int_callback = NULL /* dynamically assigned in probe() */
++ .read_int_callback = mos7720_interrupt_callback,
+ };
+
+ static struct usb_serial_driver * const serial_drivers[] = {
+diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
+index f5ab4cd9e7a1..d9f7b3bae09a 100644
+--- a/drivers/usb/serial/mos7840.c
++++ b/drivers/usb/serial/mos7840.c
+@@ -2116,6 +2116,17 @@ static int mos7840_calc_num_ports(struct usb_serial *serial)
+ return mos7840_num_ports;
+ }
+
++static int mos7840_attach(struct usb_serial *serial)
++{
++ if (serial->num_bulk_in < serial->num_ports ||
++ serial->num_bulk_out < serial->num_ports) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ return -ENODEV;
++ }
++
++ return 0;
++}
++
+ static int mos7840_port_probe(struct usb_serial_port *port)
+ {
+ struct usb_serial *serial = port->serial;
+@@ -2394,6 +2405,7 @@ static struct usb_serial_driver moschip7840_4port_device = {
+ .tiocmset = mos7840_tiocmset,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
++ .attach = mos7840_attach,
+ .port_probe = mos7840_port_probe,
+ .port_remove = mos7840_port_remove,
+ .read_bulk_callback = mos7840_bulk_in_callback,
+diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
+index f6c6900bccf0..a180b17d2432 100644
+--- a/drivers/usb/serial/omninet.c
++++ b/drivers/usb/serial/omninet.c
+@@ -38,6 +38,7 @@ static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *buf, int count);
+ static int omninet_write_room(struct tty_struct *tty);
+ static void omninet_disconnect(struct usb_serial *serial);
++static int omninet_attach(struct usb_serial *serial);
+ static int omninet_port_probe(struct usb_serial_port *port);
+ static int omninet_port_remove(struct usb_serial_port *port);
+
+@@ -56,6 +57,7 @@ static struct usb_serial_driver zyxel_omninet_device = {
+ .description = "ZyXEL - omni.net lcd plus usb",
+ .id_table = id_table,
+ .num_ports = 1,
++ .attach = omninet_attach,
+ .port_probe = omninet_port_probe,
+ .port_remove = omninet_port_remove,
+ .open = omninet_open,
+@@ -104,6 +106,17 @@ struct omninet_data {
+ __u8 od_outseq; /* Sequence number for bulk_out URBs */
+ };
+
++static int omninet_attach(struct usb_serial *serial)
++{
++ /* The second bulk-out endpoint is used for writing. */
++ if (serial->num_bulk_out < 2) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ return -ENODEV;
++ }
++
++ return 0;
++}
++
+ static int omninet_port_probe(struct usb_serial_port *port)
+ {
+ struct omninet_data *od;
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 248dac170f39..cfa46e2a8482 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -2019,6 +2019,7 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD200, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_6802, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD300, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x421d, 0xff, 0xff, 0xff) }, /* HP lt2523 (Novatel E371) */
+ { } /* Terminating entry */
+ };
+ MODULE_DEVICE_TABLE(usb, option_ids);
+diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c
+index a4b88bc038b6..b8bf52bf7a94 100644
+--- a/drivers/usb/serial/oti6858.c
++++ b/drivers/usb/serial/oti6858.c
+@@ -134,6 +134,7 @@ static int oti6858_chars_in_buffer(struct tty_struct *tty);
+ static int oti6858_tiocmget(struct tty_struct *tty);
+ static int oti6858_tiocmset(struct tty_struct *tty,
+ unsigned int set, unsigned int clear);
++static int oti6858_attach(struct usb_serial *serial);
+ static int oti6858_port_probe(struct usb_serial_port *port);
+ static int oti6858_port_remove(struct usb_serial_port *port);
+
+@@ -158,6 +159,7 @@ static struct usb_serial_driver oti6858_device = {
+ .write_bulk_callback = oti6858_write_bulk_callback,
+ .write_room = oti6858_write_room,
+ .chars_in_buffer = oti6858_chars_in_buffer,
++ .attach = oti6858_attach,
+ .port_probe = oti6858_port_probe,
+ .port_remove = oti6858_port_remove,
+ };
+@@ -324,6 +326,20 @@ static void send_data(struct work_struct *work)
+ usb_serial_port_softint(port);
+ }
+
++static int oti6858_attach(struct usb_serial *serial)
++{
++ unsigned char num_ports = serial->num_ports;
++
++ if (serial->num_bulk_in < num_ports ||
++ serial->num_bulk_out < num_ports ||
++ serial->num_interrupt_in < num_ports) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ return -ENODEV;
++ }
++
++ return 0;
++}
++
+ static int oti6858_port_probe(struct usb_serial_port *port)
+ {
+ struct oti6858_private *priv;
+diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
+index ae682e4eeaef..1db4b61bdf7b 100644
+--- a/drivers/usb/serial/pl2303.c
++++ b/drivers/usb/serial/pl2303.c
+@@ -49,6 +49,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
+ { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
+ { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },
++ { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID2) },
+ { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) },
+ { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) },
+ { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) },
+@@ -220,9 +221,17 @@ static int pl2303_probe(struct usb_serial *serial,
+ static int pl2303_startup(struct usb_serial *serial)
+ {
+ struct pl2303_serial_private *spriv;
++ unsigned char num_ports = serial->num_ports;
+ enum pl2303_type type = TYPE_01;
+ unsigned char *buf;
+
++ if (serial->num_bulk_in < num_ports ||
++ serial->num_bulk_out < num_ports ||
++ serial->num_interrupt_in < num_ports) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ return -ENODEV;
++ }
++
+ spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
+ if (!spriv)
+ return -ENOMEM;
+diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
+index e3b7af8adfb7..09d9be88209e 100644
+--- a/drivers/usb/serial/pl2303.h
++++ b/drivers/usb/serial/pl2303.h
+@@ -27,6 +27,7 @@
+ #define ATEN_VENDOR_ID 0x0557
+ #define ATEN_VENDOR_ID2 0x0547
+ #define ATEN_PRODUCT_ID 0x2008
++#define ATEN_PRODUCT_ID2 0x2118
+
+ #define IODATA_VENDOR_ID 0x04bb
+ #define IODATA_PRODUCT_ID 0x0a03
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index f0a2ad15a992..e08ae0505ad2 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -124,6 +124,7 @@ static const struct usb_device_id id_table[] = {
+ {USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */
+ {USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */
+ {USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */
++ {USB_DEVICE(0x413c, 0x81a6)}, /* Dell DW5570 QDL (MC8805) */
+ {USB_DEVICE(0x1199, 0x68a4)}, /* Sierra Wireless QDL */
+ {USB_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */
+ {USB_DEVICE(0x1199, 0x68a8)}, /* Sierra Wireless QDL */
+diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
+index b18974cbd995..a3ed07c58754 100644
+--- a/drivers/usb/serial/quatech2.c
++++ b/drivers/usb/serial/quatech2.c
+@@ -408,16 +408,12 @@ static void qt2_close(struct usb_serial_port *port)
+ {
+ struct usb_serial *serial;
+ struct qt2_port_private *port_priv;
+- unsigned long flags;
+ int i;
+
+ serial = port->serial;
+ port_priv = usb_get_serial_port_data(port);
+
+- spin_lock_irqsave(&port_priv->urb_lock, flags);
+ usb_kill_urb(port_priv->write_urb);
+- port_priv->urb_in_use = false;
+- spin_unlock_irqrestore(&port_priv->urb_lock, flags);
+
+ /* flush the port transmit buffer */
+ i = usb_control_msg(serial->dev,
+diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c
+index ef0dbf0703c5..475e6c31b266 100644
+--- a/drivers/usb/serial/spcp8x5.c
++++ b/drivers/usb/serial/spcp8x5.c
+@@ -154,6 +154,19 @@ static int spcp8x5_probe(struct usb_serial *serial,
+ return 0;
+ }
+
++static int spcp8x5_attach(struct usb_serial *serial)
++{
++ unsigned char num_ports = serial->num_ports;
++
++ if (serial->num_bulk_in < num_ports ||
++ serial->num_bulk_out < num_ports) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ return -ENODEV;
++ }
++
++ return 0;
++}
++
+ static int spcp8x5_port_probe(struct usb_serial_port *port)
+ {
+ const struct usb_device_id *id = usb_get_serial_data(port->serial);
+@@ -477,6 +490,7 @@ static struct usb_serial_driver spcp8x5_device = {
+ .tiocmget = spcp8x5_tiocmget,
+ .tiocmset = spcp8x5_tiocmset,
+ .probe = spcp8x5_probe,
++ .attach = spcp8x5_attach,
+ .port_probe = spcp8x5_port_probe,
+ .port_remove = spcp8x5_port_remove,
+ };
+diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
+index 2694df2f4559..535fcfafc097 100644
+--- a/drivers/usb/serial/ti_usb_3410_5052.c
++++ b/drivers/usb/serial/ti_usb_3410_5052.c
+@@ -339,6 +339,13 @@ static int ti_startup(struct usb_serial *serial)
+ goto free_tdev;
+ }
+
++ if (serial->num_bulk_in < serial->num_ports ||
++ serial->num_bulk_out < serial->num_ports) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ status = -ENODEV;
++ goto free_tdev;
++ }
++
+ return 0;
+
+ free_tdev:
+diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
+index 4095824c8c6d..2f40b6150fdc 100644
+--- a/drivers/usb/storage/unusual_devs.h
++++ b/drivers/usb/storage/unusual_devs.h
+@@ -2124,6 +2124,13 @@ UNUSUAL_DEV( 0x22b8, 0x3010, 0x0001, 0x0001,
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_FIX_CAPACITY | US_FL_IGNORE_RESIDUE ),
+
++/* Reported-by George Cherian <george.cherian@cavium.com> */
++UNUSUAL_DEV(0x152d, 0x9561, 0x0000, 0x9999,
++ "JMicron",
++ "JMS56x",
++ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
++ US_FL_NO_REPORT_OPCODES),
++
+ /*
+ * Patch by Constantin Baranov <const@tltsu.ru>
+ * Report by Andreas Koenecke.
+diff --git a/drivers/video/fbdev/core/fbcmap.c b/drivers/video/fbdev/core/fbcmap.c
+index f89245b8ba8e..68a113594808 100644
+--- a/drivers/video/fbdev/core/fbcmap.c
++++ b/drivers/video/fbdev/core/fbcmap.c
+@@ -163,17 +163,18 @@ void fb_dealloc_cmap(struct fb_cmap *cmap)
+
+ int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to)
+ {
+- int tooff = 0, fromoff = 0;
+- int size;
++ unsigned int tooff = 0, fromoff = 0;
++ size_t size;
+
+ if (to->start > from->start)
+ fromoff = to->start - from->start;
+ else
+ tooff = from->start - to->start;
+- size = to->len - tooff;
+- if (size > (int) (from->len - fromoff))
+- size = from->len - fromoff;
+- if (size <= 0)
++ if (fromoff >= from->len || tooff >= to->len)
++ return -EINVAL;
++
++ size = min_t(size_t, to->len - tooff, from->len - fromoff);
++ if (size == 0)
+ return -EINVAL;
+ size *= sizeof(u16);
+
+@@ -187,17 +188,18 @@ int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to)
+
+ int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to)
+ {
+- int tooff = 0, fromoff = 0;
+- int size;
++ unsigned int tooff = 0, fromoff = 0;
++ size_t size;
+
+ if (to->start > from->start)
+ fromoff = to->start - from->start;
+ else
+ tooff = from->start - to->start;
+- size = to->len - tooff;
+- if (size > (int) (from->len - fromoff))
+- size = from->len - fromoff;
+- if (size <= 0)
++ if (fromoff >= from->len || tooff >= to->len)
++ return -EINVAL;
++
++ size = min_t(size_t, to->len - tooff, from->len - fromoff);
++ if (size == 0)
+ return -EINVAL;
+ size *= sizeof(u16);
+
+diff --git a/drivers/vme/bridges/vme_ca91cx42.c b/drivers/vme/bridges/vme_ca91cx42.c
+index 18078ecbfcc6..78271c8721f8 100644
+--- a/drivers/vme/bridges/vme_ca91cx42.c
++++ b/drivers/vme/bridges/vme_ca91cx42.c
+@@ -468,7 +468,7 @@ static int ca91cx42_slave_get(struct vme_slave_resource *image, int *enabled,
+ vme_bound = ioread32(bridge->base + CA91CX42_VSI_BD[i]);
+ pci_offset = ioread32(bridge->base + CA91CX42_VSI_TO[i]);
+
+- *pci_base = (dma_addr_t)vme_base + pci_offset;
++ *pci_base = (dma_addr_t)*vme_base + pci_offset;
+ *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
+
+ *enabled = 0;
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index ff742d30ba60..f1feb3123c9c 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -5508,6 +5508,10 @@ long btrfs_ioctl(struct file *file, unsigned int
+ #ifdef CONFIG_COMPAT
+ long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ {
++ /*
++ * These all access 32-bit values anyway so no further
++ * handling is necessary.
++ */
+ switch (cmd) {
+ case FS_IOC32_GETFLAGS:
+ cmd = FS_IOC_GETFLAGS;
+@@ -5518,8 +5522,6 @@ long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ case FS_IOC32_GETVERSION:
+ cmd = FS_IOC_GETVERSION;
+ break;
+- default:
+- return -ENOIOCTLCMD;
+ }
+
+ return btrfs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
+diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
+index 1e99b29650a9..4f3bf0f527f6 100644
+--- a/fs/ceph/mds_client.c
++++ b/fs/ceph/mds_client.c
+@@ -273,12 +273,13 @@ static int parse_reply_info_extra(void **p, void *end,
+ struct ceph_mds_reply_info_parsed *info,
+ u64 features)
+ {
+- if (info->head->op == CEPH_MDS_OP_GETFILELOCK)
++ u32 op = le32_to_cpu(info->head->op);
++
++ if (op == CEPH_MDS_OP_GETFILELOCK)
+ return parse_reply_info_filelock(p, end, info, features);
+- else if (info->head->op == CEPH_MDS_OP_READDIR ||
+- info->head->op == CEPH_MDS_OP_LSSNAP)
++ else if (op == CEPH_MDS_OP_READDIR || op == CEPH_MDS_OP_LSSNAP)
+ return parse_reply_info_dir(p, end, info, features);
+- else if (info->head->op == CEPH_MDS_OP_CREATE)
++ else if (op == CEPH_MDS_OP_CREATE)
+ return parse_reply_info_create(p, end, info, features);
+ else
+ return -EIO;
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 660857431b1c..11d466bbfb0b 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -1322,8 +1322,11 @@ int d_set_mounted(struct dentry *dentry)
+ }
+ spin_lock(&dentry->d_lock);
+ if (!d_unlinked(dentry)) {
+- dentry->d_flags |= DCACHE_MOUNTED;
+- ret = 0;
++ ret = -EBUSY;
++ if (!d_mountpoint(dentry)) {
++ dentry->d_flags |= DCACHE_MOUNTED;
++ ret = 0;
++ }
+ }
+ spin_unlock(&dentry->d_lock);
+ out:
+diff --git a/fs/exec.c b/fs/exec.c
+index d392c8ad0de0..04c9cab4d4d3 100644
+--- a/fs/exec.c
++++ b/fs/exec.c
+@@ -1254,7 +1254,7 @@ static void check_unsafe_exec(struct linux_binprm *bprm)
+ unsigned n_fs;
+
+ if (p->ptrace) {
+- if (p->ptrace & PT_PTRACE_CAP)
++ if (ptracer_capable(p, current_user_ns()))
+ bprm->unsafe |= LSM_UNSAFE_PTRACE_CAP;
+ else
+ bprm->unsafe |= LSM_UNSAFE_PTRACE;
+diff --git a/fs/namespace.c b/fs/namespace.c
+index f853aaf92ec9..c46921daca22 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -735,26 +735,50 @@ static struct mountpoint *lookup_mountpoint(struct dentry *dentry)
+ return NULL;
+ }
+
+-static struct mountpoint *new_mountpoint(struct dentry *dentry)
++static struct mountpoint *get_mountpoint(struct dentry *dentry)
+ {
+- struct hlist_head *chain = mp_hash(dentry);
+- struct mountpoint *mp;
++ struct mountpoint *mp, *new = NULL;
+ int ret;
+
+- mp = kmalloc(sizeof(struct mountpoint), GFP_KERNEL);
+- if (!mp)
++ if (d_mountpoint(dentry)) {
++mountpoint:
++ read_seqlock_excl(&mount_lock);
++ mp = lookup_mountpoint(dentry);
++ read_sequnlock_excl(&mount_lock);
++ if (mp)
++ goto done;
++ }
++
++ if (!new)
++ new = kmalloc(sizeof(struct mountpoint), GFP_KERNEL);
++ if (!new)
+ return ERR_PTR(-ENOMEM);
+
++
++ /* Exactly one processes may set d_mounted */
+ ret = d_set_mounted(dentry);
+- if (ret) {
+- kfree(mp);
+- return ERR_PTR(ret);
+- }
+
+- mp->m_dentry = dentry;
+- mp->m_count = 1;
+- hlist_add_head(&mp->m_hash, chain);
+- INIT_HLIST_HEAD(&mp->m_list);
++ /* Someone else set d_mounted? */
++ if (ret == -EBUSY)
++ goto mountpoint;
++
++ /* The dentry is not available as a mountpoint? */
++ mp = ERR_PTR(ret);
++ if (ret)
++ goto done;
++
++ /* Add the new mountpoint to the hash table */
++ read_seqlock_excl(&mount_lock);
++ new->m_dentry = dentry;
++ new->m_count = 1;
++ hlist_add_head(&new->m_hash, mp_hash(dentry));
++ INIT_HLIST_HEAD(&new->m_list);
++ read_sequnlock_excl(&mount_lock);
++
++ mp = new;
++ new = NULL;
++done:
++ kfree(new);
+ return mp;
+ }
+
+@@ -1557,11 +1581,11 @@ void __detach_mounts(struct dentry *dentry)
+ struct mount *mnt;
+
+ namespace_lock();
++ lock_mount_hash();
+ mp = lookup_mountpoint(dentry);
+ if (IS_ERR_OR_NULL(mp))
+ goto out_unlock;
+
+- lock_mount_hash();
+ event++;
+ while (!hlist_empty(&mp->m_list)) {
+ mnt = hlist_entry(mp->m_list.first, struct mount, mnt_mp_list);
+@@ -1571,9 +1595,9 @@ void __detach_mounts(struct dentry *dentry)
+ }
+ else umount_tree(mnt, UMOUNT_CONNECTED);
+ }
+- unlock_mount_hash();
+ put_mountpoint(mp);
+ out_unlock:
++ unlock_mount_hash();
+ namespace_unlock();
+ }
+
+@@ -1994,9 +2018,7 @@ retry:
+ namespace_lock();
+ mnt = lookup_mnt(path);
+ if (likely(!mnt)) {
+- struct mountpoint *mp = lookup_mountpoint(dentry);
+- if (!mp)
+- mp = new_mountpoint(dentry);
++ struct mountpoint *mp = get_mountpoint(dentry);
+ if (IS_ERR(mp)) {
+ namespace_unlock();
+ mutex_unlock(&dentry->d_inode->i_mutex);
+@@ -2015,7 +2037,11 @@ retry:
+ static void unlock_mount(struct mountpoint *where)
+ {
+ struct dentry *dentry = where->m_dentry;
++
++ read_seqlock_excl(&mount_lock);
+ put_mountpoint(where);
++ read_sequnlock_excl(&mount_lock);
++
+ namespace_unlock();
+ mutex_unlock(&dentry->d_inode->i_mutex);
+ }
+@@ -3091,9 +3117,9 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root,
+ touch_mnt_namespace(current->nsproxy->mnt_ns);
+ /* A moved mount should not expire automatically */
+ list_del_init(&new_mnt->mnt_expire);
++ put_mountpoint(root_mp);
+ unlock_mount_hash();
+ chroot_fs_refs(&root, &new);
+- put_mountpoint(root_mp);
+ error = 0;
+ out4:
+ unlock_mount(old_mp);
+diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
+index ddef1dc80cf7..2a9ab265aa32 100644
+--- a/fs/nfs/nfs4state.c
++++ b/fs/nfs/nfs4state.c
+@@ -1073,6 +1073,7 @@ static void nfs_increment_seqid(int status, struct nfs_seqid *seqid)
+ case -NFS4ERR_BADXDR:
+ case -NFS4ERR_RESOURCE:
+ case -NFS4ERR_NOFILEHANDLE:
++ case -NFS4ERR_MOVED:
+ /* Non-seqid mutating errors */
+ return;
+ };
+diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c
+index 6904213a4363..8b6ec3eab627 100644
+--- a/fs/nfsd/nfs4layouts.c
++++ b/fs/nfsd/nfs4layouts.c
+@@ -189,10 +189,11 @@ nfsd4_alloc_layout_stateid(struct nfsd4_compound_state *cstate,
+ struct nfs4_layout_stateid *ls;
+ struct nfs4_stid *stp;
+
+- stp = nfs4_alloc_stid(cstate->clp, nfs4_layout_stateid_cache);
++ stp = nfs4_alloc_stid(cstate->clp, nfs4_layout_stateid_cache,
++ nfsd4_free_layout_stateid);
+ if (!stp)
+ return NULL;
+- stp->sc_free = nfsd4_free_layout_stateid;
++
+ get_nfs4_file(fp);
+ stp->sc_file = fp;
+
+diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
+index bb6c324f1f3d..22e9799323ad 100644
+--- a/fs/nfsd/nfs4state.c
++++ b/fs/nfsd/nfs4state.c
+@@ -553,8 +553,8 @@ out:
+ return co;
+ }
+
+-struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl,
+- struct kmem_cache *slab)
++struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab,
++ void (*sc_free)(struct nfs4_stid *))
+ {
+ struct nfs4_stid *stid;
+ int new_id;
+@@ -570,6 +570,8 @@ struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl,
+ idr_preload_end();
+ if (new_id < 0)
+ goto out_free;
++
++ stid->sc_free = sc_free;
+ stid->sc_client = cl;
+ stid->sc_stateid.si_opaque.so_id = new_id;
+ stid->sc_stateid.si_opaque.so_clid = cl->cl_clientid;
+@@ -594,15 +596,12 @@ out_free:
+ static struct nfs4_ol_stateid * nfs4_alloc_open_stateid(struct nfs4_client *clp)
+ {
+ struct nfs4_stid *stid;
+- struct nfs4_ol_stateid *stp;
+
+- stid = nfs4_alloc_stid(clp, stateid_slab);
++ stid = nfs4_alloc_stid(clp, stateid_slab, nfs4_free_ol_stateid);
+ if (!stid)
+ return NULL;
+
+- stp = openlockstateid(stid);
+- stp->st_stid.sc_free = nfs4_free_ol_stateid;
+- return stp;
++ return openlockstateid(stid);
+ }
+
+ static void nfs4_free_deleg(struct nfs4_stid *stid)
+@@ -700,11 +699,10 @@ alloc_init_deleg(struct nfs4_client *clp, struct svc_fh *current_fh,
+ goto out_dec;
+ if (delegation_blocked(¤t_fh->fh_handle))
+ goto out_dec;
+- dp = delegstateid(nfs4_alloc_stid(clp, deleg_slab));
++ dp = delegstateid(nfs4_alloc_stid(clp, deleg_slab, nfs4_free_deleg));
+ if (dp == NULL)
+ goto out_dec;
+
+- dp->dl_stid.sc_free = nfs4_free_deleg;
+ /*
+ * delegation seqid's are never incremented. The 4.1 special
+ * meaning of seqid 0 isn't meaningful, really, but let's avoid
+@@ -5309,7 +5307,6 @@ init_lock_stateid(struct nfs4_ol_stateid *stp, struct nfs4_lockowner *lo,
+ stp->st_stateowner = nfs4_get_stateowner(&lo->lo_owner);
+ get_nfs4_file(fp);
+ stp->st_stid.sc_file = fp;
+- stp->st_stid.sc_free = nfs4_free_lock_stateid;
+ stp->st_access_bmap = 0;
+ stp->st_deny_bmap = open_stp->st_deny_bmap;
+ stp->st_openstp = open_stp;
+@@ -5352,7 +5349,7 @@ find_or_create_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fi,
+ lst = find_lock_stateid(lo, fi);
+ if (lst == NULL) {
+ spin_unlock(&clp->cl_lock);
+- ns = nfs4_alloc_stid(clp, stateid_slab);
++ ns = nfs4_alloc_stid(clp, stateid_slab, nfs4_free_lock_stateid);
+ if (ns == NULL)
+ return NULL;
+
+diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
+index 67685b6cfef3..fa2430e3d6a8 100644
+--- a/fs/nfsd/state.h
++++ b/fs/nfsd/state.h
+@@ -589,8 +589,8 @@ extern __be32 nfs4_preprocess_stateid_op(struct net *net,
+ __be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
+ stateid_t *stateid, unsigned char typemask,
+ struct nfs4_stid **s, struct nfsd_net *nn);
+-struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl,
+- struct kmem_cache *slab);
++struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab,
++ void (*sc_free)(struct nfs4_stid *));
+ void nfs4_unhash_stid(struct nfs4_stid *s);
+ void nfs4_put_stid(struct nfs4_stid *s);
+ void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *);
+diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
+index 3623ab6fa97f..4a4ac9386d4d 100644
+--- a/fs/ocfs2/dlmglue.c
++++ b/fs/ocfs2/dlmglue.c
+@@ -3322,6 +3322,16 @@ static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
+ mlog(ML_BASTS, "lockres %s, level %d => %d\n", lockres->l_name,
+ lockres->l_level, new_level);
+
++ /*
++ * On DLM_LKF_VALBLK, fsdlm behaves differently with o2cb. It always
++ * expects DLM_LKF_VALBLK being set if the LKB has LVB, so that
++ * we can recover correctly from node failure. Otherwise, we may get
++ * invalid LVB in LKB, but without DLM_SBF_VALNOTVALID being set.
++ */
++ if (!ocfs2_is_o2cb_active() &&
++ lockres->l_ops->flags & LOCK_TYPE_USES_LVB)
++ lvb = 1;
++
+ if (lvb)
+ dlm_flags |= DLM_LKF_VALBLK;
+
+diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
+index 5d965e83bd43..783bcdce5666 100644
+--- a/fs/ocfs2/stackglue.c
++++ b/fs/ocfs2/stackglue.c
+@@ -48,6 +48,12 @@ static char ocfs2_hb_ctl_path[OCFS2_MAX_HB_CTL_PATH] = "/sbin/ocfs2_hb_ctl";
+ */
+ static struct ocfs2_stack_plugin *active_stack;
+
++inline int ocfs2_is_o2cb_active(void)
++{
++ return !strcmp(active_stack->sp_name, OCFS2_STACK_PLUGIN_O2CB);
++}
++EXPORT_SYMBOL_GPL(ocfs2_is_o2cb_active);
++
+ static struct ocfs2_stack_plugin *ocfs2_stack_lookup(const char *name)
+ {
+ struct ocfs2_stack_plugin *p;
+diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
+index 66334a30cea8..e1b30931974d 100644
+--- a/fs/ocfs2/stackglue.h
++++ b/fs/ocfs2/stackglue.h
+@@ -298,4 +298,7 @@ void ocfs2_stack_glue_set_max_proto_version(struct ocfs2_protocol_version *max_p
+ int ocfs2_stack_glue_register(struct ocfs2_stack_plugin *plugin);
+ void ocfs2_stack_glue_unregister(struct ocfs2_stack_plugin *plugin);
+
++/* In ocfs2_downconvert_lock(), we need to know which stack we are using */
++int ocfs2_is_o2cb_active(void);
++
+ #endif /* STACKGLUE_H */
+diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
+index 0dea606074c7..d38541256287 100644
+--- a/fs/proc/proc_sysctl.c
++++ b/fs/proc/proc_sysctl.c
+@@ -703,7 +703,7 @@ static int proc_sys_readdir(struct file *file, struct dir_context *ctx)
+ ctl_dir = container_of(head, struct ctl_dir, header);
+
+ if (!dir_emit_dots(file, ctx))
+- return 0;
++ goto out;
+
+ pos = 2;
+
+@@ -713,6 +713,7 @@ static int proc_sys_readdir(struct file *file, struct dir_context *ctx)
+ break;
+ }
+ }
++out:
+ sysctl_head_finish(head);
+ return 0;
+ }
+diff --git a/fs/splice.c b/fs/splice.c
+index e7522c486068..6ec6054df138 100644
+--- a/fs/splice.c
++++ b/fs/splice.c
+@@ -211,6 +211,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
+ buf->len = spd->partial[page_nr].len;
+ buf->private = spd->partial[page_nr].private;
+ buf->ops = spd->ops;
++ buf->flags = 0;
+ if (spd->flags & SPLICE_F_GIFT)
+ buf->flags |= PIPE_BUF_FLAG_GIFT;
+
+diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
+index 957f5757f374..a18574237034 100644
+--- a/fs/ubifs/tnc.c
++++ b/fs/ubifs/tnc.c
+@@ -34,6 +34,11 @@
+ #include <linux/slab.h>
+ #include "ubifs.h"
+
++static int try_read_node(const struct ubifs_info *c, void *buf, int type,
++ int len, int lnum, int offs);
++static int fallible_read_node(struct ubifs_info *c, const union ubifs_key *key,
++ struct ubifs_zbranch *zbr, void *node);
++
+ /*
+ * Returned codes of 'matches_name()' and 'fallible_matches_name()' functions.
+ * @NAME_LESS: name corresponding to the first argument is less than second
+@@ -403,7 +408,19 @@ static int tnc_read_node_nm(struct ubifs_info *c, struct ubifs_zbranch *zbr,
+ return 0;
+ }
+
+- err = ubifs_tnc_read_node(c, zbr, node);
++ if (c->replaying) {
++ err = fallible_read_node(c, &zbr->key, zbr, node);
++ /*
++ * When the node was not found, return -ENOENT, 0 otherwise.
++ * Negative return codes stay as-is.
++ */
++ if (err == 0)
++ err = -ENOENT;
++ else if (err == 1)
++ err = 0;
++ } else {
++ err = ubifs_tnc_read_node(c, zbr, node);
++ }
+ if (err)
+ return err;
+
+@@ -2767,7 +2784,11 @@ struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
+ if (nm->name) {
+ if (err) {
+ /* Handle collisions */
+- err = resolve_collision(c, key, &znode, &n, nm);
++ if (c->replaying)
++ err = fallible_resolve_collision(c, key, &znode, &n,
++ nm, 0);
++ else
++ err = resolve_collision(c, key, &znode, &n, nm);
+ dbg_tnc("rc returned %d, znode %p, n %d",
+ err, znode, n);
+ if (unlikely(err < 0))
+diff --git a/include/linux/capability.h b/include/linux/capability.h
+index af9f0b9e80e6..99d19db09908 100644
+--- a/include/linux/capability.h
++++ b/include/linux/capability.h
+@@ -244,6 +244,7 @@ static inline bool ns_capable(struct user_namespace *ns, int cap)
+ #endif /* CONFIG_MULTIUSER */
+ extern bool capable_wrt_inode_uidgid(const struct inode *inode, int cap);
+ extern bool file_ns_capable(const struct file *file, struct user_namespace *ns, int cap);
++extern bool ptracer_capable(struct task_struct *tsk, struct user_namespace *ns);
+
+ /* audit system wants to get cap info from files as well */
+ extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps);
+diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
+index 59915ea5373c..a91b3b75da0f 100644
+--- a/include/linux/cpumask.h
++++ b/include/linux/cpumask.h
+@@ -556,7 +556,7 @@ static inline void cpumask_copy(struct cpumask *dstp,
+ static inline int cpumask_parse_user(const char __user *buf, int len,
+ struct cpumask *dstp)
+ {
+- return bitmap_parse_user(buf, len, cpumask_bits(dstp), nr_cpu_ids);
++ return bitmap_parse_user(buf, len, cpumask_bits(dstp), nr_cpumask_bits);
+ }
+
+ /**
+@@ -571,7 +571,7 @@ static inline int cpumask_parselist_user(const char __user *buf, int len,
+ struct cpumask *dstp)
+ {
+ return bitmap_parselist_user(buf, len, cpumask_bits(dstp),
+- nr_cpu_ids);
++ nr_cpumask_bits);
+ }
+
+ /**
+@@ -586,7 +586,7 @@ static inline int cpumask_parse(const char *buf, struct cpumask *dstp)
+ char *nl = strchr(buf, '\n');
+ unsigned int len = nl ? (unsigned int)(nl - buf) : strlen(buf);
+
+- return bitmap_parse(buf, len, cpumask_bits(dstp), nr_cpu_ids);
++ return bitmap_parse(buf, len, cpumask_bits(dstp), nr_cpumask_bits);
+ }
+
+ /**
+@@ -598,7 +598,7 @@ static inline int cpumask_parse(const char *buf, struct cpumask *dstp)
+ */
+ static inline int cpulist_parse(const char *buf, struct cpumask *dstp)
+ {
+- return bitmap_parselist(buf, cpumask_bits(dstp), nr_cpu_ids);
++ return bitmap_parselist(buf, cpumask_bits(dstp), nr_cpumask_bits);
+ }
+
+ /**
+diff --git a/include/linux/jump_label_ratelimit.h b/include/linux/jump_label_ratelimit.h
+index 089f70f83e97..23da3af459fe 100644
+--- a/include/linux/jump_label_ratelimit.h
++++ b/include/linux/jump_label_ratelimit.h
+@@ -14,6 +14,7 @@ struct static_key_deferred {
+
+ #ifdef HAVE_JUMP_LABEL
+ extern void static_key_slow_dec_deferred(struct static_key_deferred *key);
++extern void static_key_deferred_flush(struct static_key_deferred *key);
+ extern void
+ jump_label_rate_limit(struct static_key_deferred *key, unsigned long rl);
+
+@@ -26,6 +27,10 @@ static inline void static_key_slow_dec_deferred(struct static_key_deferred *key)
+ STATIC_KEY_CHECK_USE();
+ static_key_slow_dec(&key->key);
+ }
++static inline void static_key_deferred_flush(struct static_key_deferred *key)
++{
++ STATIC_KEY_CHECK_USE();
++}
+ static inline void
+ jump_label_rate_limit(struct static_key_deferred *key,
+ unsigned long rl)
+diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
+index 32201c269890..84662efaf657 100644
+--- a/include/linux/nfs4.h
++++ b/include/linux/nfs4.h
+@@ -265,7 +265,7 @@ enum nfsstat4 {
+
+ static inline bool seqid_mutating_err(u32 err)
+ {
+- /* rfc 3530 section 8.1.5: */
++ /* See RFC 7530, section 9.1.7 */
+ switch (err) {
+ case NFS4ERR_STALE_CLIENTID:
+ case NFS4ERR_STALE_STATEID:
+@@ -274,6 +274,7 @@ static inline bool seqid_mutating_err(u32 err)
+ case NFS4ERR_BADXDR:
+ case NFS4ERR_RESOURCE:
+ case NFS4ERR_NOFILEHANDLE:
++ case NFS4ERR_MOVED:
+ return false;
+ };
+ return true;
+diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h
+index 12c9b485beb7..abd7c01c84db 100644
+--- a/include/linux/percpu-refcount.h
++++ b/include/linux/percpu-refcount.h
+@@ -206,7 +206,7 @@ static inline void percpu_ref_get(struct percpu_ref *ref)
+ static inline bool percpu_ref_tryget(struct percpu_ref *ref)
+ {
+ unsigned long __percpu *percpu_count;
+- int ret;
++ bool ret;
+
+ rcu_read_lock_sched();
+
+@@ -240,7 +240,7 @@ static inline bool percpu_ref_tryget(struct percpu_ref *ref)
+ static inline bool percpu_ref_tryget_live(struct percpu_ref *ref)
+ {
+ unsigned long __percpu *percpu_count;
+- int ret = false;
++ bool ret = false;
+
+ rcu_read_lock_sched();
+
+diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
+index 998c098dd172..e615c7553959 100644
+--- a/include/linux/ptrace.h
++++ b/include/linux/ptrace.h
+@@ -19,7 +19,6 @@
+ #define PT_SEIZED 0x00010000 /* SEIZE used, enable new behavior */
+ #define PT_PTRACED 0x00000001
+ #define PT_DTRACE 0x00000002 /* delayed trace (used on m68k, i386) */
+-#define PT_PTRACE_CAP 0x00000004 /* ptracer can follow suid-exec */
+
+ #define PT_OPT_FLAG_SHIFT 3
+ /* PT_TRACE_* event enable flags */
+diff --git a/include/linux/sched.h b/include/linux/sched.h
+index 9e39deaeddd6..c68ecb17a7e1 100644
+--- a/include/linux/sched.h
++++ b/include/linux/sched.h
+@@ -1454,6 +1454,7 @@ struct task_struct {
+ struct list_head cpu_timers[3];
+
+ /* process credentials */
++ const struct cred __rcu *ptracer_cred; /* Tracer's credentials at attach */
+ const struct cred __rcu *real_cred; /* objective and real subjective task
+ * credentials (COW) */
+ const struct cred __rcu *cred; /* effective (overridable) subjective task
+diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
+index ee29cb43470f..d4bb3f429645 100644
+--- a/include/linux/sunrpc/clnt.h
++++ b/include/linux/sunrpc/clnt.h
+@@ -179,5 +179,6 @@ const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
+ int rpc_localaddr(struct rpc_clnt *, struct sockaddr *, size_t);
+
+ const char *rpc_proc_name(const struct rpc_task *task);
++void rpc_cleanup_clids(void);
+ #endif /* __KERNEL__ */
+ #endif /* _LINUX_SUNRPC_CLNT_H */
+diff --git a/kernel/capability.c b/kernel/capability.c
+index 45432b54d5c6..022df097a6bc 100644
+--- a/kernel/capability.c
++++ b/kernel/capability.c
+@@ -447,3 +447,23 @@ bool capable_wrt_inode_uidgid(const struct inode *inode, int cap)
+ kgid_has_mapping(ns, inode->i_gid);
+ }
+ EXPORT_SYMBOL(capable_wrt_inode_uidgid);
++
++/**
++ * ptracer_capable - Determine if the ptracer holds CAP_SYS_PTRACE in the namespace
++ * @tsk: The task that may be ptraced
++ * @ns: The user namespace to search for CAP_SYS_PTRACE in
++ *
++ * Return true if the task that is ptracing the current task had CAP_SYS_PTRACE
++ * in the specified user namespace.
++ */
++bool ptracer_capable(struct task_struct *tsk, struct user_namespace *ns)
++{
++ int ret = 0; /* An absent tracer adds no restrictions */
++ const struct cred *cred;
++ rcu_read_lock();
++ cred = rcu_dereference(tsk->ptracer_cred);
++ if (cred)
++ ret = security_capable_noaudit(cred, ns, CAP_SYS_PTRACE);
++ rcu_read_unlock();
++ return (ret == 0);
++}
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 6da64f0d0630..34d4db5cd984 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -198,8 +198,11 @@ void update_perf_cpu_limits(void)
+ u64 tmp = perf_sample_period_ns;
+
+ tmp *= sysctl_perf_cpu_time_max_percent;
+- do_div(tmp, 100);
+- ACCESS_ONCE(perf_sample_allowed_ns) = tmp;
++ tmp = div_u64(tmp, 100);
++ if (!tmp)
++ tmp = 1;
++
++ WRITE_ONCE(perf_sample_allowed_ns, tmp);
+ }
+
+ static int perf_rotate_context(struct perf_cpu_context *cpuctx);
+@@ -213,6 +216,13 @@ int perf_proc_update_handler(struct ctl_table *table, int write,
+ if (ret || !write)
+ return ret;
+
++ /*
++ * If throttling is disabled don't allow the write:
++ */
++ if (sysctl_perf_cpu_time_max_percent == 100 ||
++ sysctl_perf_cpu_time_max_percent == 0)
++ return -EINVAL;
++
+ max_samples_per_tick = DIV_ROUND_UP(sysctl_perf_event_sample_rate, HZ);
+ perf_sample_period_ns = NSEC_PER_SEC / sysctl_perf_event_sample_rate;
+ update_perf_cpu_limits();
+@@ -226,12 +236,19 @@ int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+ {
+- int ret = proc_dointvec(table, write, buffer, lenp, ppos);
++ int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
+
+ if (ret || !write)
+ return ret;
+
+- update_perf_cpu_limits();
++ if (sysctl_perf_cpu_time_max_percent == 100 ||
++ sysctl_perf_cpu_time_max_percent == 0) {
++ printk(KERN_WARNING
++ "perf: Dynamic interrupt throttling disabled, can hang your system!\n");
++ WRITE_ONCE(perf_sample_allowed_ns, 0);
++ } else {
++ update_perf_cpu_limits();
++ }
+
+ return 0;
+ }
+@@ -245,62 +262,68 @@ int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
+ #define NR_ACCUMULATED_SAMPLES 128
+ static DEFINE_PER_CPU(u64, running_sample_length);
+
++static u64 __report_avg;
++static u64 __report_allowed;
++
+ static void perf_duration_warn(struct irq_work *w)
+ {
+- u64 allowed_ns = ACCESS_ONCE(perf_sample_allowed_ns);
+- u64 avg_local_sample_len;
+- u64 local_samples_len;
+-
+- local_samples_len = __this_cpu_read(running_sample_length);
+- avg_local_sample_len = local_samples_len/NR_ACCUMULATED_SAMPLES;
+-
+ printk_ratelimited(KERN_WARNING
+- "perf interrupt took too long (%lld > %lld), lowering "
+- "kernel.perf_event_max_sample_rate to %d\n",
+- avg_local_sample_len, allowed_ns >> 1,
+- sysctl_perf_event_sample_rate);
++ "perf: interrupt took too long (%lld > %lld), lowering "
++ "kernel.perf_event_max_sample_rate to %d\n",
++ __report_avg, __report_allowed,
++ sysctl_perf_event_sample_rate);
+ }
+
+ static DEFINE_IRQ_WORK(perf_duration_work, perf_duration_warn);
+
+ void perf_sample_event_took(u64 sample_len_ns)
+ {
+- u64 allowed_ns = ACCESS_ONCE(perf_sample_allowed_ns);
+- u64 avg_local_sample_len;
+- u64 local_samples_len;
++ u64 max_len = READ_ONCE(perf_sample_allowed_ns);
++ u64 running_len;
++ u64 avg_len;
++ u32 max;
+
+- if (allowed_ns == 0)
++ if (max_len == 0)
+ return;
+
+- /* decay the counter by 1 average sample */
+- local_samples_len = __this_cpu_read(running_sample_length);
+- local_samples_len -= local_samples_len/NR_ACCUMULATED_SAMPLES;
+- local_samples_len += sample_len_ns;
+- __this_cpu_write(running_sample_length, local_samples_len);
++ /* Decay the counter by 1 average sample. */
++ running_len = __this_cpu_read(running_sample_length);
++ running_len -= running_len/NR_ACCUMULATED_SAMPLES;
++ running_len += sample_len_ns;
++ __this_cpu_write(running_sample_length, running_len);
+
+ /*
+- * note: this will be biased artifically low until we have
+- * seen NR_ACCUMULATED_SAMPLES. Doing it this way keeps us
++ * Note: this will be biased artifically low until we have
++ * seen NR_ACCUMULATED_SAMPLES. Doing it this way keeps us
+ * from having to maintain a count.
+ */
+- avg_local_sample_len = local_samples_len/NR_ACCUMULATED_SAMPLES;
+-
+- if (avg_local_sample_len <= allowed_ns)
++ avg_len = running_len/NR_ACCUMULATED_SAMPLES;
++ if (avg_len <= max_len)
+ return;
+
+- if (max_samples_per_tick <= 1)
+- return;
++ __report_avg = avg_len;
++ __report_allowed = max_len;
+
+- max_samples_per_tick = DIV_ROUND_UP(max_samples_per_tick, 2);
+- sysctl_perf_event_sample_rate = max_samples_per_tick * HZ;
+- perf_sample_period_ns = NSEC_PER_SEC / sysctl_perf_event_sample_rate;
++ /*
++ * Compute a throttle threshold 25% below the current duration.
++ */
++ avg_len += avg_len / 4;
++ max = (TICK_NSEC / 100) * sysctl_perf_cpu_time_max_percent;
++ if (avg_len < max)
++ max /= (u32)avg_len;
++ else
++ max = 1;
+
+- update_perf_cpu_limits();
++ WRITE_ONCE(perf_sample_allowed_ns, avg_len);
++ WRITE_ONCE(max_samples_per_tick, max);
++
++ sysctl_perf_event_sample_rate = max * HZ;
++ perf_sample_period_ns = NSEC_PER_SEC / sysctl_perf_event_sample_rate;
+
+ if (!irq_work_queue(&perf_duration_work)) {
+- early_printk("perf interrupt took too long (%lld > %lld), lowering "
++ early_printk("perf: interrupt took too long (%lld > %lld), lowering "
+ "kernel.perf_event_max_sample_rate to %d\n",
+- avg_local_sample_len, allowed_ns >> 1,
++ __report_avg, __report_allowed,
+ sysctl_perf_event_sample_rate);
+ }
+ }
+@@ -5833,6 +5856,27 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
+ char *buf = NULL;
+ char *name;
+
++ if (vma->vm_flags & VM_READ)
++ prot |= PROT_READ;
++ if (vma->vm_flags & VM_WRITE)
++ prot |= PROT_WRITE;
++ if (vma->vm_flags & VM_EXEC)
++ prot |= PROT_EXEC;
++
++ if (vma->vm_flags & VM_MAYSHARE)
++ flags = MAP_SHARED;
++ else
++ flags = MAP_PRIVATE;
++
++ if (vma->vm_flags & VM_DENYWRITE)
++ flags |= MAP_DENYWRITE;
++ if (vma->vm_flags & VM_MAYEXEC)
++ flags |= MAP_EXECUTABLE;
++ if (vma->vm_flags & VM_LOCKED)
++ flags |= MAP_LOCKED;
++ if (vma->vm_flags & VM_HUGETLB)
++ flags |= MAP_HUGETLB;
++
+ if (file) {
+ struct inode *inode;
+ dev_t dev;
+@@ -5859,27 +5903,6 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
+ maj = MAJOR(dev);
+ min = MINOR(dev);
+
+- if (vma->vm_flags & VM_READ)
+- prot |= PROT_READ;
+- if (vma->vm_flags & VM_WRITE)
+- prot |= PROT_WRITE;
+- if (vma->vm_flags & VM_EXEC)
+- prot |= PROT_EXEC;
+-
+- if (vma->vm_flags & VM_MAYSHARE)
+- flags = MAP_SHARED;
+- else
+- flags = MAP_PRIVATE;
+-
+- if (vma->vm_flags & VM_DENYWRITE)
+- flags |= MAP_DENYWRITE;
+- if (vma->vm_flags & VM_MAYEXEC)
+- flags |= MAP_EXECUTABLE;
+- if (vma->vm_flags & VM_LOCKED)
+- flags |= MAP_LOCKED;
+- if (vma->vm_flags & VM_HUGETLB)
+- flags |= MAP_HUGETLB;
+-
+ goto got_name;
+ } else {
+ if (vma->vm_ops && vma->vm_ops->name) {
+diff --git a/kernel/futex.c b/kernel/futex.c
+index 2214b70f1910..01ee2e8859c4 100644
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -3074,4 +3074,4 @@ static int __init futex_init(void)
+
+ return 0;
+ }
+-__initcall(futex_init);
++core_initcall(futex_init);
+diff --git a/kernel/jump_label.c b/kernel/jump_label.c
+index 9019f15deab2..7d4d0a917d13 100644
+--- a/kernel/jump_label.c
++++ b/kernel/jump_label.c
+@@ -116,6 +116,13 @@ void static_key_slow_dec_deferred(struct static_key_deferred *key)
+ }
+ EXPORT_SYMBOL_GPL(static_key_slow_dec_deferred);
+
++void static_key_deferred_flush(struct static_key_deferred *key)
++{
++ STATIC_KEY_CHECK_USE();
++ flush_delayed_work(&key->work);
++}
++EXPORT_SYMBOL_GPL(static_key_deferred_flush);
++
+ void jump_label_rate_limit(struct static_key_deferred *key,
+ unsigned long rl)
+ {
+diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
+index 3c1aca0c3543..59dc17ba820b 100644
+--- a/kernel/printk/printk.c
++++ b/kernel/printk/printk.c
+@@ -1394,7 +1394,7 @@ static void call_console_drivers(int level, const char *text, size_t len)
+ {
+ struct console *con;
+
+- trace_console(text, len);
++ trace_console_rcuidle(text, len);
+
+ if (level >= console_loglevel && !ignore_loglevel)
+ return;
+diff --git a/kernel/ptrace.c b/kernel/ptrace.c
+index 9650e7aee267..c67aab541ee2 100644
+--- a/kernel/ptrace.c
++++ b/kernel/ptrace.c
+@@ -40,6 +40,9 @@ void __ptrace_link(struct task_struct *child, struct task_struct *new_parent)
+ BUG_ON(!list_empty(&child->ptrace_entry));
+ list_add(&child->ptrace_entry, &new_parent->ptraced);
+ child->parent = new_parent;
++ rcu_read_lock();
++ child->ptracer_cred = get_cred(__task_cred(new_parent));
++ rcu_read_unlock();
+ }
+
+ /**
+@@ -72,11 +75,15 @@ void __ptrace_link(struct task_struct *child, struct task_struct *new_parent)
+ */
+ void __ptrace_unlink(struct task_struct *child)
+ {
++ const struct cred *old_cred;
+ BUG_ON(!child->ptrace);
+
+ child->ptrace = 0;
+ child->parent = child->real_parent;
+ list_del_init(&child->ptrace_entry);
++ old_cred = child->ptracer_cred;
++ child->ptracer_cred = NULL;
++ put_cred(old_cred);
+
+ spin_lock(&child->sighand->siglock);
+
+@@ -366,10 +373,6 @@ static int ptrace_attach(struct task_struct *task, long request,
+
+ if (seize)
+ flags |= PT_SEIZED;
+- rcu_read_lock();
+- if (ns_capable(__task_cred(task)->user_ns, CAP_SYS_PTRACE))
+- flags |= PT_PTRACE_CAP;
+- rcu_read_unlock();
+ task->ptrace = flags;
+
+ __ptrace_link(task, current);
+diff --git a/kernel/sysctl.c b/kernel/sysctl.c
+index cebbff5f34fe..1431089b8a67 100644
+--- a/kernel/sysctl.c
++++ b/kernel/sysctl.c
+@@ -2349,6 +2349,7 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int
+ break;
+ if (neg)
+ continue;
++ val = convmul * val / convdiv;
+ if ((min && val < *min) || (max && val > *max))
+ continue;
+ *i = val;
+diff --git a/mm/filemap.c b/mm/filemap.c
+index 1ffef05f1c1f..fc5165c744a8 100644
+--- a/mm/filemap.c
++++ b/mm/filemap.c
+@@ -1485,6 +1485,11 @@ static ssize_t do_generic_file_read(struct file *filp, loff_t *ppos,
+
+ cond_resched();
+ find_page:
++ if (fatal_signal_pending(current)) {
++ error = -EINTR;
++ goto out;
++ }
++
+ page = find_get_page(mapping, index);
+ if (!page) {
+ page_cache_sync_readahead(mapping,
+diff --git a/mm/hugetlb.c b/mm/hugetlb.c
+index 88b472bec71d..2f47f0332a2c 100644
+--- a/mm/hugetlb.c
++++ b/mm/hugetlb.c
+@@ -1387,23 +1387,32 @@ free:
+ }
+
+ /*
+- * When releasing a hugetlb pool reservation, any surplus pages that were
+- * allocated to satisfy the reservation must be explicitly freed if they were
+- * never used.
+- * Called with hugetlb_lock held.
++ * This routine has two main purposes:
++ * 1) Decrement the reservation count (resv_huge_pages) by the value passed
++ * in unused_resv_pages. This corresponds to the prior adjustments made
++ * to the associated reservation map.
++ * 2) Free any unused surplus pages that may have been allocated to satisfy
++ * the reservation. As many as unused_resv_pages may be freed.
++ *
++ * Called with hugetlb_lock held. However, the lock could be dropped (and
++ * reacquired) during calls to cond_resched_lock. Whenever dropping the lock,
++ * we must make sure nobody else can claim pages we are in the process of
++ * freeing. Do this by ensuring resv_huge_page always is greater than the
++ * number of huge pages we plan to free when dropping the lock.
+ */
+ static void return_unused_surplus_pages(struct hstate *h,
+ unsigned long unused_resv_pages)
+ {
+ unsigned long nr_pages;
+
+- /* Uncommit the reservation */
+- h->resv_huge_pages -= unused_resv_pages;
+-
+ /* Cannot return gigantic pages currently */
+ if (hstate_is_gigantic(h))
+- return;
++ goto out;
+
++ /*
++ * Part (or even all) of the reservation could have been backed
++ * by pre-allocated pages. Only free surplus pages.
++ */
+ nr_pages = min(unused_resv_pages, h->surplus_huge_pages);
+
+ /*
+@@ -1413,12 +1422,22 @@ static void return_unused_surplus_pages(struct hstate *h,
+ * when the nodes with surplus pages have no free pages.
+ * free_pool_huge_page() will balance the the freed pages across the
+ * on-line nodes with memory and will handle the hstate accounting.
++ *
++ * Note that we decrement resv_huge_pages as we free the pages. If
++ * we drop the lock, resv_huge_pages will still be sufficiently large
++ * to cover subsequent pages we may free.
+ */
+ while (nr_pages--) {
++ h->resv_huge_pages--;
++ unused_resv_pages--;
+ if (!free_pool_huge_page(h, &node_states[N_MEMORY], 1))
+- break;
++ goto out;
+ cond_resched_lock(&hugetlb_lock);
+ }
++
++out:
++ /* Fully uncommit the reservation */
++ h->resv_huge_pages -= unused_resv_pages;
+ }
+
+ /*
+diff --git a/mm/mempolicy.c b/mm/mempolicy.c
+index 99d4c1d0b858..18c63b754e49 100644
+--- a/mm/mempolicy.c
++++ b/mm/mempolicy.c
+@@ -2009,8 +2009,8 @@ retry_cpuset:
+
+ nmask = policy_nodemask(gfp, pol);
+ zl = policy_zonelist(gfp, pol, node);
+- mpol_cond_put(pol);
+ page = __alloc_pages_nodemask(gfp, order, zl, nmask);
++ mpol_cond_put(pol);
+ out:
+ if (unlikely(!page && read_mems_allowed_retry(cpuset_mems_cookie)))
+ goto retry_cpuset;
+diff --git a/net/can/bcm.c b/net/can/bcm.c
+index a1ba6875c2a2..2d9ffc2ac376 100644
+--- a/net/can/bcm.c
++++ b/net/can/bcm.c
+@@ -705,14 +705,23 @@ static struct bcm_op *bcm_find_op(struct list_head *ops, canid_t can_id,
+
+ static void bcm_remove_op(struct bcm_op *op)
+ {
+- hrtimer_cancel(&op->timer);
+- hrtimer_cancel(&op->thrtimer);
+-
+- if (op->tsklet.func)
+- tasklet_kill(&op->tsklet);
++ if (op->tsklet.func) {
++ while (test_bit(TASKLET_STATE_SCHED, &op->tsklet.state) ||
++ test_bit(TASKLET_STATE_RUN, &op->tsklet.state) ||
++ hrtimer_active(&op->timer)) {
++ hrtimer_cancel(&op->timer);
++ tasklet_kill(&op->tsklet);
++ }
++ }
+
+- if (op->thrtsklet.func)
+- tasklet_kill(&op->thrtsklet);
++ if (op->thrtsklet.func) {
++ while (test_bit(TASKLET_STATE_SCHED, &op->thrtsklet.state) ||
++ test_bit(TASKLET_STATE_RUN, &op->thrtsklet.state) ||
++ hrtimer_active(&op->thrtimer)) {
++ hrtimer_cancel(&op->thrtimer);
++ tasklet_kill(&op->thrtsklet);
++ }
++ }
+
+ if ((op->frames) && (op->frames != &op->sframe))
+ kfree(op->frames);
+diff --git a/net/sunrpc/auth_gss/gss_rpc_xdr.c b/net/sunrpc/auth_gss/gss_rpc_xdr.c
+index eeeba5adee6d..2410d557ae39 100644
+--- a/net/sunrpc/auth_gss/gss_rpc_xdr.c
++++ b/net/sunrpc/auth_gss/gss_rpc_xdr.c
+@@ -260,7 +260,7 @@ static int gssx_dec_option_array(struct xdr_stream *xdr,
+ if (!oa->data)
+ return -ENOMEM;
+
+- creds = kmalloc(sizeof(struct svc_cred), GFP_KERNEL);
++ creds = kzalloc(sizeof(struct svc_cred), GFP_KERNEL);
+ if (!creds) {
+ kfree(oa->data);
+ return -ENOMEM;
+diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
+index 4605dc73def6..033fec307528 100644
+--- a/net/sunrpc/auth_gss/svcauth_gss.c
++++ b/net/sunrpc/auth_gss/svcauth_gss.c
+@@ -1481,7 +1481,7 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
+ case RPC_GSS_PROC_DESTROY:
+ if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
+ goto auth_err;
+- rsci->h.expiry_time = get_seconds();
++ rsci->h.expiry_time = seconds_since_boot();
+ set_bit(CACHE_NEGATIVE, &rsci->h.flags);
+ if (resv->iov_len + 4 > PAGE_SIZE)
+ goto drop;
+diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
+index 16e831dcfde0..c67d3627cf01 100644
+--- a/net/sunrpc/clnt.c
++++ b/net/sunrpc/clnt.c
+@@ -337,6 +337,11 @@ out:
+
+ static DEFINE_IDA(rpc_clids);
+
++void rpc_cleanup_clids(void)
++{
++ ida_destroy(&rpc_clids);
++}
++
+ static int rpc_alloc_clid(struct rpc_clnt *clnt)
+ {
+ int clid;
+diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c
+index ee5d3d253102..3142f38d1104 100644
+--- a/net/sunrpc/sunrpc_syms.c
++++ b/net/sunrpc/sunrpc_syms.c
+@@ -119,6 +119,7 @@ out:
+ static void __exit
+ cleanup_sunrpc(void)
+ {
++ rpc_cleanup_clids();
+ rpcauth_remove_module();
+ cleanup_socket_xprt();
+ svc_cleanup_xprt_sock();
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index 978d7f91ca91..81203bbb2eef 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -12784,13 +12784,17 @@ static int nl80211_netlink_notify(struct notifier_block * nb,
+
+ list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
+ bool schedule_destroy_work = false;
+- bool schedule_scan_stop = false;
+ struct cfg80211_sched_scan_request *sched_scan_req =
+ rcu_dereference(rdev->sched_scan_req);
+
+ if (sched_scan_req && notify->portid &&
+- sched_scan_req->owner_nlportid == notify->portid)
+- schedule_scan_stop = true;
++ sched_scan_req->owner_nlportid == notify->portid) {
++ sched_scan_req->owner_nlportid = 0;
++
++ if (rdev->ops->sched_scan_stop &&
++ rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
++ schedule_work(&rdev->sched_scan_stop_wk);
++ }
+
+ list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
+ cfg80211_mlme_unregister_socket(wdev, notify->portid);
+@@ -12821,12 +12825,6 @@ static int nl80211_netlink_notify(struct notifier_block * nb,
+ spin_unlock(&rdev->destroy_list_lock);
+ schedule_work(&rdev->destroy_work);
+ }
+- } else if (schedule_scan_stop) {
+- sched_scan_req->owner_nlportid = 0;
+-
+- if (rdev->ops->sched_scan_stop &&
+- rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
+- schedule_work(&rdev->sched_scan_stop_wk);
+ }
+ }
+
+diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
+index 280235cc3a98..0034eb420b0e 100644
+--- a/security/selinux/hooks.c
++++ b/security/selinux/hooks.c
+@@ -5626,7 +5626,7 @@ static int selinux_setprocattr(struct task_struct *p,
+ return error;
+
+ /* Obtain a SID for the context, if one was specified. */
+- if (size && str[1] && str[1] != '\n') {
++ if (size && str[0] && str[0] != '\n') {
+ if (str[size-1] == '\n') {
+ str[size-1] = 0;
+ size--;
+diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c
+index c850345c43b5..dfa5156f3585 100644
+--- a/sound/core/seq/seq_memory.c
++++ b/sound/core/seq/seq_memory.c
+@@ -419,7 +419,6 @@ int snd_seq_pool_done(struct snd_seq_pool *pool)
+ {
+ unsigned long flags;
+ struct snd_seq_event_cell *ptr;
+- int max_count = 5 * HZ;
+
+ if (snd_BUG_ON(!pool))
+ return -EINVAL;
+@@ -432,14 +431,8 @@ int snd_seq_pool_done(struct snd_seq_pool *pool)
+ if (waitqueue_active(&pool->output_sleep))
+ wake_up(&pool->output_sleep);
+
+- while (atomic_read(&pool->counter) > 0) {
+- if (max_count == 0) {
+- pr_warn("ALSA: snd_seq_pool_done timeout: %d cells remain\n", atomic_read(&pool->counter));
+- break;
+- }
++ while (atomic_read(&pool->counter) > 0)
+ schedule_timeout_uninterruptible(1);
+- max_count--;
+- }
+
+ /* release all resources */
+ spin_lock_irqsave(&pool->lock, flags);
+diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c
+index 77ec21420355..f676ae53c477 100644
+--- a/sound/core/seq/seq_queue.c
++++ b/sound/core/seq/seq_queue.c
+@@ -181,6 +181,8 @@ void __exit snd_seq_queues_delete(void)
+ }
+ }
+
++static void queue_use(struct snd_seq_queue *queue, int client, int use);
++
+ /* allocate a new queue -
+ * return queue index value or negative value for error
+ */
+@@ -192,11 +194,11 @@ int snd_seq_queue_alloc(int client, int locked, unsigned int info_flags)
+ if (q == NULL)
+ return -ENOMEM;
+ q->info_flags = info_flags;
++ queue_use(q, client, 1);
+ if (queue_list_add(q) < 0) {
+ queue_delete(q);
+ return -ENOMEM;
+ }
+- snd_seq_queue_use(q->queue, client, 1); /* use this queue */
+ return q->queue;
+ }
+
+@@ -502,19 +504,9 @@ int snd_seq_queue_timer_set_tempo(int queueid, int client,
+ return result;
+ }
+
+-
+-/* use or unuse this queue -
+- * if it is the first client, starts the timer.
+- * if it is not longer used by any clients, stop the timer.
+- */
+-int snd_seq_queue_use(int queueid, int client, int use)
++/* use or unuse this queue */
++static void queue_use(struct snd_seq_queue *queue, int client, int use)
+ {
+- struct snd_seq_queue *queue;
+-
+- queue = queueptr(queueid);
+- if (queue == NULL)
+- return -EINVAL;
+- mutex_lock(&queue->timer_mutex);
+ if (use) {
+ if (!test_and_set_bit(client, queue->clients_bitmap))
+ queue->clients++;
+@@ -529,6 +521,21 @@ int snd_seq_queue_use(int queueid, int client, int use)
+ } else {
+ snd_seq_timer_close(queue);
+ }
++}
++
++/* use or unuse this queue -
++ * if it is the first client, starts the timer.
++ * if it is not longer used by any clients, stop the timer.
++ */
++int snd_seq_queue_use(int queueid, int client, int use)
++{
++ struct snd_seq_queue *queue;
++
++ queue = queueptr(queueid);
++ if (queue == NULL)
++ return -EINVAL;
++ mutex_lock(&queue->timer_mutex);
++ queue_use(queue, client, use);
+ mutex_unlock(&queue->timer_mutex);
+ queuefree(queue);
+ return 0;
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index b93458698335..3adf376092dd 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -2225,6 +2225,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1043, 0x1971, "Asus W2JC", ALC882_FIXUP_ASUS_W2JC),
+ SND_PCI_QUIRK(0x1043, 0x835f, "Asus Eee 1601", ALC888_FIXUP_EEE1601),
+ SND_PCI_QUIRK(0x1043, 0x84bc, "ASUS ET2700", ALC887_FIXUP_ASUS_BASS),
++ SND_PCI_QUIRK(0x1043, 0x8691, "ASUS ROG Ranger VIII", ALC882_FIXUP_GPIO3),
+ SND_PCI_QUIRK(0x104d, 0x9047, "Sony Vaio TT", ALC889_FIXUP_VAIO_TT),
+ SND_PCI_QUIRK(0x104d, 0x905a, "Sony Vaio Z", ALC882_FIXUP_NO_PRIMARY_HP),
+ SND_PCI_QUIRK(0x104d, 0x9043, "Sony Vaio VGC-LN51JGB", ALC882_FIXUP_NO_PRIMARY_HP),
+@@ -6939,6 +6940,7 @@ static const struct snd_pci_quirk alc662_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1043, 0x15a7, "ASUS UX51VZH", ALC662_FIXUP_BASS_16),
+ SND_PCI_QUIRK(0x1043, 0x177d, "ASUS N551", ALC668_FIXUP_ASUS_Nx51),
+ SND_PCI_QUIRK(0x1043, 0x17bd, "ASUS N751", ALC668_FIXUP_ASUS_Nx51),
++ SND_PCI_QUIRK(0x1043, 0x1963, "ASUS X71SL", ALC662_FIXUP_ASUS_MODE8),
+ SND_PCI_QUIRK(0x1043, 0x1b73, "ASUS N55SF", ALC662_FIXUP_BASS_16),
+ SND_PCI_QUIRK(0x1043, 0x1bf3, "ASUS N76VZ", ALC662_FIXUP_BASS_MODE4_CHMAP),
+ SND_PCI_QUIRK(0x1043, 0x8469, "ASUS mobo", ALC662_FIXUP_NO_JACK_DETECT),
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 4a083433944e..2c71e5682716 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1132,6 +1132,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ case USB_ID(0x045E, 0x076F): /* MS Lifecam HD-6000 */
+ case USB_ID(0x045E, 0x0772): /* MS Lifecam Studio */
+ case USB_ID(0x045E, 0x0779): /* MS Lifecam HD-3000 */
++ case USB_ID(0x047F, 0x02F7): /* Plantronics BT-600 */
+ case USB_ID(0x047F, 0x0415): /* Plantronics BT-300 */
+ case USB_ID(0x047F, 0xAA05): /* Plantronics DA45 */
+ case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
+diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
+index f76830643086..c98c53f272c1 100644
+--- a/tools/testing/selftests/Makefile
++++ b/tools/testing/selftests/Makefile
+@@ -70,7 +70,7 @@ ifdef INSTALL_PATH
+ done;
+
+ @# Ask all targets to emit their test scripts
+- echo "#!/bin/bash" > $(ALL_SCRIPT)
++ echo "#!/bin/sh" > $(ALL_SCRIPT)
+ echo "cd \$$(dirname \$$0)" >> $(ALL_SCRIPT)
+ echo "ROOT=\$$PWD" >> $(ALL_SCRIPT)
+
+diff --git a/tools/testing/selftests/net/run_netsocktests b/tools/testing/selftests/net/run_netsocktests
+index c09a682df56a..16058bbea7a8 100755
+--- a/tools/testing/selftests/net/run_netsocktests
++++ b/tools/testing/selftests/net/run_netsocktests
+@@ -1,4 +1,4 @@
+-#!/bin/bash
++#!/bin/sh
+
+ echo "--------------------"
+ echo "running socket test"
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-03-02 16:31 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-03-02 16:31 UTC (permalink / raw
To: gentoo-commits
commit: dd4e296ce656f9d84cda4d366ddadd9404b7039e
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Mar 2 16:16:08 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Mar 2 16:31:51 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=dd4e296c
Enable crypto API for systemd as its required for systemd versions >= 233. See bug #611368.
4567_distro-Gentoo-Kconfig.patch | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/4567_distro-Gentoo-Kconfig.patch b/4567_distro-Gentoo-Kconfig.patch
index 4a88040..5555b8a 100644
--- a/4567_distro-Gentoo-Kconfig.patch
+++ b/4567_distro-Gentoo-Kconfig.patch
@@ -7,9 +7,9 @@
+source "distro/Kconfig"
+
source "arch/$SRCARCH/Kconfig"
---- /dev/null 2017-02-18 04:25:56.900821893 -0500
-+++ b/distro/Kconfig 2017-02-18 10:41:16.512328155 -0500
-@@ -0,0 +1,142 @@
+--- /dev/null 2017-03-02 01:55:04.096566155 -0500
++++ b/distro/Kconfig 2017-03-02 11:12:05.049448255 -0500
+@@ -0,0 +1,145 @@
+menu "Gentoo Linux"
+
+config GENTOO_LINUX
@@ -114,6 +114,9 @@
+ select BLK_DEV_BSG
+ select CGROUPS
+ select CHECKPOINT_RESTORE
++ select CRYPTO_HMAC
++ select CRYPTO_SHA256
++ select CRYPTO_USER_API_HASH
+ select DEVPTS_MULTIPLE_INSTANCES
+ select DMIID if X86_32 || X86_64 || X86
+ select EPOLL
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-03-02 16:31 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-03-02 16:31 UTC (permalink / raw
To: gentoo-commits
commit: 590c1d9ccf1174bc04ee8c2e6156fe06ddac9db4
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sat Feb 18 20:36:37 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Mar 2 16:30:03 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=590c1d9c
For GENTOO_LINUX_INIT_SYSTEMD don't add DMIID for non X86 architectures. See bug #609590.
4567_distro-Gentoo-Kconfig.patch | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/4567_distro-Gentoo-Kconfig.patch b/4567_distro-Gentoo-Kconfig.patch
index acb0972..4a88040 100644
--- a/4567_distro-Gentoo-Kconfig.patch
+++ b/4567_distro-Gentoo-Kconfig.patch
@@ -7,8 +7,8 @@
+source "distro/Kconfig"
+
source "arch/$SRCARCH/Kconfig"
---- /dev/null 2016-11-15 00:56:18.320838834 -0500
-+++ b/distro/Kconfig 2016-11-16 06:24:29.457357409 -0500
+--- /dev/null 2017-02-18 04:25:56.900821893 -0500
++++ b/distro/Kconfig 2017-02-18 10:41:16.512328155 -0500
@@ -0,0 +1,142 @@
+menu "Gentoo Linux"
+
@@ -115,7 +115,7 @@
+ select CGROUPS
+ select CHECKPOINT_RESTORE
+ select DEVPTS_MULTIPLE_INSTANCES
-+ select DMIID
++ select DMIID if X86_32 || X86_64 || X86
+ select EPOLL
+ select FANOTIFY
+ select FHANDLE
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-02-24 16:11 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2017-02-24 16:11 UTC (permalink / raw
To: gentoo-commits
commit: 6ed8b62e018b2d75b73c9d848d64b1394c1e362a
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Feb 24 16:11:39 2017 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Feb 24 16:11:39 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=6ed8b62e
dccp: fix freeing skb too early for IPV6_RECVPKTINFO. CVE-2017-6074
0000_README | 4 ++
1520_CVE-2017-6074-dccp-fix-early-skb-free.patch | 47 ++++++++++++++++++++++++
2 files changed, 51 insertions(+)
diff --git a/0000_README b/0000_README
index 061bd5e..9c6c940 100644
--- a/0000_README
+++ b/0000_README
@@ -203,6 +203,10 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
Desc: Enable link security restrictions by default.
+Patch: 1520_CVE-2017-6074-dccp-skb-freeing-fix.patch
+From: https://bugs.gentoo.org/show_bug.cgi?id=610600
+Desc: dccp: fix freeing skb too early for IPV6_RECVPKTINFO. CVE-2017-6074
+
Patch: 1800_fix-lru-cache-add-oom-regression.patch
From: http://thread.gmane.org/gmane.linux.kernel.stable/184384
Desc: Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
diff --git a/1520_CVE-2017-6074-dccp-fix-early-skb-free.patch b/1520_CVE-2017-6074-dccp-fix-early-skb-free.patch
new file mode 100644
index 0000000..433fd4b
--- /dev/null
+++ b/1520_CVE-2017-6074-dccp-fix-early-skb-free.patch
@@ -0,0 +1,47 @@
+From 5edabca9d4cff7f1f2b68f0bac55ef99d9798ba4 Mon Sep 17 00:00:00 2001
+From: Andrey Konovalov <andreyknvl@google.com>
+Date: Thu, 16 Feb 2017 17:22:46 +0100
+Subject: dccp: fix freeing skb too early for IPV6_RECVPKTINFO
+
+In the current DCCP implementation an skb for a DCCP_PKT_REQUEST packet
+is forcibly freed via __kfree_skb in dccp_rcv_state_process if
+dccp_v6_conn_request successfully returns.
+
+However, if IPV6_RECVPKTINFO is set on a socket, the address of the skb
+is saved to ireq->pktopts and the ref count for skb is incremented in
+dccp_v6_conn_request, so skb is still in use. Nevertheless, it gets freed
+in dccp_rcv_state_process.
+
+Fix by calling consume_skb instead of doing goto discard and therefore
+calling __kfree_skb.
+
+Similar fixes for TCP:
+
+fb7e2399ec17f1004c0e0ccfd17439f8759ede01 [TCP]: skb is unexpectedly freed.
+0aea76d35c9651d55bbaf746e7914e5f9ae5a25d tcp: SYN packets are now
+simply consumed
+
+Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
+Acked-by: Eric Dumazet <edumazet@google.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ net/dccp/input.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/net/dccp/input.c b/net/dccp/input.c
+index ba34718..8fedc2d 100644
+--- a/net/dccp/input.c
++++ b/net/dccp/input.c
+@@ -606,7 +606,8 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
+ if (inet_csk(sk)->icsk_af_ops->conn_request(sk,
+ skb) < 0)
+ return 1;
+- goto discard;
++ consume_skb(skb);
++ return 0;
+ }
+ if (dh->dccph_type == DCCP_PKT_RESET)
+ goto discard;
+--
+cgit v0.12
+
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-01-18 23:50 Alice Ferrazzi
0 siblings, 0 replies; 71+ messages in thread
From: Alice Ferrazzi @ 2017-01-18 23:50 UTC (permalink / raw
To: gentoo-commits
commit: d98fbf46c2bf583f517b78dda8df9422fdffe1b2
Author: Alice Ferrazzi <alicef <AT> gentoo <DOT> org>
AuthorDate: Wed Jan 18 23:49:33 2017 +0000
Commit: Alice Ferrazzi <alicef <AT> gentoo <DOT> org>
CommitDate: Wed Jan 18 23:49:33 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=d98fbf46
Linux patch 4.1.38
0000_README | 4 +
1037_linux-4.1.38.patch | 2415 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2419 insertions(+)
diff --git a/0000_README b/0000_README
index e28d8f1..061bd5e 100644
--- a/0000_README
+++ b/0000_README
@@ -191,6 +191,10 @@ Patch: 1036_linux-4.1.37.patch
From: http://www.kernel.org
Desc: Linux 4.1.37
+Patch: 1037_linux-4.1.38.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.38
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1037_linux-4.1.38.patch b/1037_linux-4.1.38.patch
new file mode 100644
index 0000000..a0b5049
--- /dev/null
+++ b/1037_linux-4.1.38.patch
@@ -0,0 +1,2415 @@
+diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
+index 9fa2bf8c3f6f..7830f1c34a7d 100644
+--- a/Documentation/virtual/kvm/api.txt
++++ b/Documentation/virtual/kvm/api.txt
+@@ -1955,6 +1955,7 @@ registers, find a list below:
+ PPC | KVM_REG_PPC_TM_VSCR | 32
+ PPC | KVM_REG_PPC_TM_DSCR | 64
+ PPC | KVM_REG_PPC_TM_TAR | 64
++ PPC | KVM_REG_PPC_TM_XER | 64
+ | |
+ MIPS | KVM_REG_MIPS_R0 | 64
+ ...
+diff --git a/Makefile b/Makefile
+index df72b644f78c..1aba5352e0bd 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 37
++SUBLEVEL = 38
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
+index 7d0f07020c80..ab19044815f5 100644
+--- a/arch/arm/xen/enlighten.c
++++ b/arch/arm/xen/enlighten.c
+@@ -218,8 +218,7 @@ static int __init xen_guest_init(void)
+ * for secondary CPUs as they are brought up.
+ * For uniformity we use VCPUOP_register_vcpu_info even on cpu0.
+ */
+- xen_vcpu_info = __alloc_percpu(sizeof(struct vcpu_info),
+- sizeof(struct vcpu_info));
++ xen_vcpu_info = alloc_percpu(struct vcpu_info);
+ if (xen_vcpu_info == NULL)
+ return -ENOMEM;
+
+diff --git a/arch/powerpc/boot/ps3-head.S b/arch/powerpc/boot/ps3-head.S
+index b6fcbaf5027b..3dc44b05fb97 100644
+--- a/arch/powerpc/boot/ps3-head.S
++++ b/arch/powerpc/boot/ps3-head.S
+@@ -57,11 +57,6 @@ __system_reset_overlay:
+ bctr
+
+ 1:
+- /* Save the value at addr zero for a null pointer write check later. */
+-
+- li r4, 0
+- lwz r3, 0(r4)
+-
+ /* Primary delays then goes to _zimage_start in wrapper. */
+
+ or 31, 31, 31 /* db16cyc */
+diff --git a/arch/powerpc/boot/ps3.c b/arch/powerpc/boot/ps3.c
+index 4ec2d86d3c50..a05558a7e51a 100644
+--- a/arch/powerpc/boot/ps3.c
++++ b/arch/powerpc/boot/ps3.c
+@@ -119,13 +119,12 @@ void ps3_copy_vectors(void)
+ flush_cache((void *)0x100, 512);
+ }
+
+-void platform_init(unsigned long null_check)
++void platform_init(void)
+ {
+ const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */
+ void *chosen;
+ unsigned long ft_addr;
+ u64 rm_size;
+- unsigned long val;
+
+ console_ops.write = ps3_console_write;
+ platform_ops.exit = ps3_exit;
+@@ -153,11 +152,6 @@ void platform_init(unsigned long null_check)
+
+ printf(" flat tree at 0x%lx\n\r", ft_addr);
+
+- val = *(unsigned long *)0;
+-
+- if (val != null_check)
+- printf("null check failed: %lx != %lx\n\r", val, null_check);
+-
+ ((kernel_entry_t)0)(ft_addr, 0, NULL);
+
+ ps3_exit();
+diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
+index a193a13cf08b..7fe65af0035d 100644
+--- a/arch/powerpc/include/asm/kvm_host.h
++++ b/arch/powerpc/include/asm/kvm_host.h
+@@ -532,6 +532,7 @@ struct kvm_vcpu_arch {
+ u64 tfiar;
+
+ u32 cr_tm;
++ u64 xer_tm;
+ u64 lr_tm;
+ u64 ctr_tm;
+ u64 amr_tm;
+diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h
+index ab4d4732c492..720b71a636c8 100644
+--- a/arch/powerpc/include/uapi/asm/kvm.h
++++ b/arch/powerpc/include/uapi/asm/kvm.h
+@@ -587,6 +587,7 @@ struct kvm_get_htab_header {
+ #define KVM_REG_PPC_TM_VSCR (KVM_REG_PPC_TM | KVM_REG_SIZE_U32 | 0x67)
+ #define KVM_REG_PPC_TM_DSCR (KVM_REG_PPC_TM | KVM_REG_SIZE_U64 | 0x68)
+ #define KVM_REG_PPC_TM_TAR (KVM_REG_PPC_TM | KVM_REG_SIZE_U64 | 0x69)
++#define KVM_REG_PPC_TM_XER (KVM_REG_PPC_TM | KVM_REG_SIZE_U64 | 0x6a)
+
+ /* PPC64 eXternal Interrupt Controller Specification */
+ #define KVM_DEV_XICS_GRP_SOURCES 1 /* 64-bit source attributes */
+diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
+index 0034b6b3556a..d8d332e65078 100644
+--- a/arch/powerpc/kernel/asm-offsets.c
++++ b/arch/powerpc/kernel/asm-offsets.c
+@@ -583,6 +583,7 @@ int main(void)
+ DEFINE(VCPU_VRS_TM, offsetof(struct kvm_vcpu, arch.vr_tm.vr));
+ DEFINE(VCPU_VRSAVE_TM, offsetof(struct kvm_vcpu, arch.vrsave_tm));
+ DEFINE(VCPU_CR_TM, offsetof(struct kvm_vcpu, arch.cr_tm));
++ DEFINE(VCPU_XER_TM, offsetof(struct kvm_vcpu, arch.xer_tm));
+ DEFINE(VCPU_LR_TM, offsetof(struct kvm_vcpu, arch.lr_tm));
+ DEFINE(VCPU_CTR_TM, offsetof(struct kvm_vcpu, arch.ctr_tm));
+ DEFINE(VCPU_AMR_TM, offsetof(struct kvm_vcpu, arch.amr_tm));
+diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
+index f5b3de7f7fa2..63c37fd2b7a6 100644
+--- a/arch/powerpc/kvm/book3s_hv.c
++++ b/arch/powerpc/kvm/book3s_hv.c
+@@ -1171,6 +1171,9 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
+ case KVM_REG_PPC_TM_CR:
+ *val = get_reg_val(id, vcpu->arch.cr_tm);
+ break;
++ case KVM_REG_PPC_TM_XER:
++ *val = get_reg_val(id, vcpu->arch.xer_tm);
++ break;
+ case KVM_REG_PPC_TM_LR:
+ *val = get_reg_val(id, vcpu->arch.lr_tm);
+ break;
+@@ -1378,6 +1381,9 @@ static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
+ case KVM_REG_PPC_TM_CR:
+ vcpu->arch.cr_tm = set_reg_val(id, *val);
+ break;
++ case KVM_REG_PPC_TM_XER:
++ vcpu->arch.xer_tm = set_reg_val(id, *val);
++ break;
+ case KVM_REG_PPC_TM_LR:
+ vcpu->arch.lr_tm = set_reg_val(id, *val);
+ break;
+diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+index c6d601cc9764..bee16411de73 100644
+--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
++++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+@@ -619,6 +619,8 @@ long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
+ HPTE_V_ABSENT);
+ do_tlbies(kvm, &rb, 1, global_invalidates(kvm, flags),
+ true);
++ /* Don't lose R/C bit updates done by hardware */
++ r |= be64_to_cpu(hpte[1]) & (HPTE_R_R | HPTE_R_C);
+ hpte[1] = cpu_to_be64(r);
+ }
+ }
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index 11d82b91aa4f..70eaf547703e 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -2399,11 +2399,13 @@ kvmppc_save_tm:
+ mfctr r7
+ mfspr r8, SPRN_AMR
+ mfspr r10, SPRN_TAR
++ mfxer r11
+ std r5, VCPU_LR_TM(r9)
+ stw r6, VCPU_CR_TM(r9)
+ std r7, VCPU_CTR_TM(r9)
+ std r8, VCPU_AMR_TM(r9)
+ std r10, VCPU_TAR_TM(r9)
++ std r11, VCPU_XER_TM(r9)
+
+ /* Restore r12 as trap number. */
+ lwz r12, VCPU_TRAP(r9)
+@@ -2496,11 +2498,13 @@ kvmppc_restore_tm:
+ ld r7, VCPU_CTR_TM(r4)
+ ld r8, VCPU_AMR_TM(r4)
+ ld r9, VCPU_TAR_TM(r4)
++ ld r10, VCPU_XER_TM(r4)
+ mtlr r5
+ mtcr r6
+ mtctr r7
+ mtspr SPRN_AMR, r8
+ mtspr SPRN_TAR, r9
++ mtxer r10
+
+ /*
+ * Load up PPR and DSCR values but don't put them in the actual SPRs
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 08f9d9230b94..341ea55d2e85 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -1172,10 +1172,10 @@ static inline bool nested_cpu_has_posted_intr(struct vmcs12 *vmcs12)
+ return vmcs12->pin_based_vm_exec_control & PIN_BASED_POSTED_INTR;
+ }
+
+-static inline bool is_exception(u32 intr_info)
++static inline bool is_nmi(u32 intr_info)
+ {
+ return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK))
+- == (INTR_TYPE_HARD_EXCEPTION | INTR_INFO_VALID_MASK);
++ == (INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK);
+ }
+
+ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
+@@ -5089,7 +5089,7 @@ static int handle_exception(struct kvm_vcpu *vcpu)
+ if (is_machine_check(intr_info))
+ return handle_machine_check(vcpu);
+
+- if ((intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR)
++ if (is_nmi(intr_info))
+ return 1; /* already handled by vmx_vcpu_run() */
+
+ if (is_no_device(intr_info)) {
+@@ -7519,7 +7519,7 @@ static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu)
+
+ switch (exit_reason) {
+ case EXIT_REASON_EXCEPTION_NMI:
+- if (!is_exception(intr_info))
++ if (is_nmi(intr_info))
+ return false;
+ else if (is_page_fault(intr_info))
+ return enable_ept;
+@@ -7967,8 +7967,7 @@ static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx)
+ kvm_machine_check();
+
+ /* We need to handle NMIs before interrupts are enabled */
+- if ((exit_intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR &&
+- (exit_intr_info & INTR_INFO_VALID_MASK)) {
++ if (is_nmi(exit_intr_info)) {
+ kvm_before_handle_nmi(&vmx->vcpu);
+ asm("int $2");
+ kvm_after_handle_nmi(&vmx->vcpu);
+diff --git a/block/bsg.c b/block/bsg.c
+index d214e929ce18..b9a53615bdef 100644
+--- a/block/bsg.c
++++ b/block/bsg.c
+@@ -655,6 +655,9 @@ bsg_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+
+ dprintk("%s: write %Zd bytes\n", bd->name, count);
+
++ if (unlikely(segment_eq(get_fs(), KERNEL_DS)))
++ return -EINVAL;
++
+ bsg_set_block(bd, file);
+
+ bytes_written = 0;
+diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
+index 4d1d9de4f9bf..8b0b95014465 100644
+--- a/drivers/base/firmware_class.c
++++ b/drivers/base/firmware_class.c
+@@ -923,13 +923,14 @@ static int _request_firmware_load(struct firmware_priv *fw_priv,
+ timeout = MAX_JIFFY_OFFSET;
+ }
+
+- retval = wait_for_completion_interruptible_timeout(&buf->completion,
++ timeout = wait_for_completion_interruptible_timeout(&buf->completion,
+ timeout);
+- if (retval == -ERESTARTSYS || !retval) {
++ if (timeout == -ERESTARTSYS || !timeout) {
++ retval = timeout;
+ mutex_lock(&fw_lock);
+ fw_load_abort(fw_priv);
+ mutex_unlock(&fw_lock);
+- } else if (retval > 0) {
++ } else if (timeout > 0) {
+ retval = 0;
+ }
+
+diff --git a/drivers/block/loop.c b/drivers/block/loop.c
+index cef6fa83a274..ea0c863861b9 100644
+--- a/drivers/block/loop.c
++++ b/drivers/block/loop.c
+@@ -1436,7 +1436,7 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
+ blk_mq_start_request(bd->rq);
+
+ if (lo->lo_state != Lo_bound)
+- return -EIO;
++ return BLK_MQ_RQ_QUEUE_ERROR;
+
+ if (cmd->rq->cmd_flags & REQ_WRITE) {
+ struct loop_device *lo = cmd->rq->q->queuedata;
+diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c
+index 3111f2778079..849f2e29c243 100644
+--- a/drivers/char/tpm/xen-tpmfront.c
++++ b/drivers/char/tpm/xen-tpmfront.c
+@@ -305,7 +305,6 @@ static int tpmfront_probe(struct xenbus_device *dev,
+ rv = setup_ring(dev, priv);
+ if (rv) {
+ chip = dev_get_drvdata(&dev->dev);
+- tpm_chip_unregister(chip);
+ ring_free(priv);
+ return rv;
+ }
+diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
+index 29071a156cbe..c9202f6feda8 100644
+--- a/drivers/crypto/caam/caamalg.c
++++ b/drivers/crypto/caam/caamalg.c
+@@ -703,7 +703,9 @@ static int aead_set_sh_desc(struct crypto_aead *aead)
+
+ /* Will read cryptlen */
+ append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
+- aead_append_src_dst(desc, FIFOLD_TYPE_MSG1OUT2);
++ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | KEY_VLF |
++ FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LASTBOTH);
++ append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF);
+
+ /* Write ICV */
+ append_seq_store(desc, ctx->authsize, LDST_CLASS_2_CCB |
+diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
+index fd5c5f3370f6..e53dbc90fcb6 100644
+--- a/drivers/gpu/drm/ast/ast_main.c
++++ b/drivers/gpu/drm/ast/ast_main.c
+@@ -223,7 +223,8 @@ static int ast_get_dram_info(struct drm_device *dev)
+ ast_write32(ast, 0x10000, 0xfc600309);
+
+ do {
+- ;
++ if (pci_channel_offline(dev->pdev))
++ return -EIO;
+ } while (ast_read32(ast, 0x10000) != 0x01);
+ data = ast_read32(ast, 0x10004);
+
+@@ -429,7 +430,9 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
+ ast_detect_chip(dev, &need_post);
+
+ if (ast->chip != AST1180) {
+- ast_get_dram_info(dev);
++ ret = ast_get_dram_info(dev);
++ if (ret)
++ goto out_free;
+ ast->vram_size = ast_get_vram_info(dev);
+ DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
+ }
+diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
+index 92e7e5795398..db98ab5cde3d 100644
+--- a/drivers/gpu/drm/gma500/psb_drv.c
++++ b/drivers/gpu/drm/gma500/psb_drv.c
+@@ -484,6 +484,9 @@ static const struct file_operations psb_gem_fops = {
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = psb_unlocked_ioctl,
++#ifdef CONFIG_COMPAT
++ .compat_ioctl = drm_compat_ioctl,
++#endif
+ .mmap = drm_gem_mmap,
+ .poll = drm_poll,
+ .read = drm_read,
+diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
+index 7d53d7e15455..c7a7cc17db32 100644
+--- a/drivers/gpu/drm/i915/i915_drv.h
++++ b/drivers/gpu/drm/i915/i915_drv.h
+@@ -2006,21 +2006,19 @@ struct drm_i915_gem_object {
+ /** Record of address bit 17 of each page at last unbind. */
+ unsigned long *bit_17;
+
+- union {
+- /** for phy allocated objects */
+- struct drm_dma_handle *phys_handle;
+-
+- struct i915_gem_userptr {
+- uintptr_t ptr;
+- unsigned read_only :1;
+- unsigned workers :4;
++ struct i915_gem_userptr {
++ uintptr_t ptr;
++ unsigned read_only :1;
++ unsigned workers :4;
+ #define I915_GEM_USERPTR_MAX_WORKERS 15
+
+- struct i915_mm_struct *mm;
+- struct i915_mmu_object *mmu_object;
+- struct work_struct *work;
+- } userptr;
+- };
++ struct i915_mm_struct *mm;
++ struct i915_mmu_object *mmu_object;
++ struct work_struct *work;
++ } userptr;
++
++ /** for phys allocated objects */
++ struct drm_dma_handle *phys_handle;
+ };
+ #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base)
+
+diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
+index 00bc49835e09..52c703be7882 100644
+--- a/drivers/gpu/drm/i915/intel_pm.c
++++ b/drivers/gpu/drm/i915/intel_pm.c
+@@ -1849,32 +1849,34 @@ static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[8])
+ GEN9_MEM_LATENCY_LEVEL_MASK;
+
+ /*
++ * If a level n (n > 1) has a 0us latency, all levels m (m >= n)
++ * need to be disabled. We make sure to sanitize the values out
++ * of the punit to satisfy this requirement.
++ */
++ for (level = 1; level <= max_level; level++) {
++ if (wm[level] == 0) {
++ for (i = level + 1; i <= max_level; i++)
++ wm[i] = 0;
++ break;
++ }
++ }
++
++ /*
+ * WaWmMemoryReadLatency:skl
+ *
+ * punit doesn't take into account the read latency so we need
+- * to add 2us to the various latency levels we retrieve from
+- * the punit.
+- * - W0 is a bit special in that it's the only level that
+- * can't be disabled if we want to have display working, so
+- * we always add 2us there.
+- * - For levels >=1, punit returns 0us latency when they are
+- * disabled, so we respect that and don't add 2us then
+- *
+- * Additionally, if a level n (n > 1) has a 0us latency, all
+- * levels m (m >= n) need to be disabled. We make sure to
+- * sanitize the values out of the punit to satisfy this
+- * requirement.
++ * to add 2us to the various latency levels we retrieve from the
++ * punit when level 0 response data us 0us.
+ */
+- wm[0] += 2;
+- for (level = 1; level <= max_level; level++)
+- if (wm[level] != 0)
++ if (wm[0] == 0) {
++ wm[0] += 2;
++ for (level = 1; level <= max_level; level++) {
++ if (wm[level] == 0)
++ break;
+ wm[level] += 2;
+- else {
+- for (i = level + 1; i <= max_level; i++)
+- wm[i] = 0;
+-
+- break;
+ }
++ }
++
+ } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+ uint64_t sskpd = I915_READ64(MCH_SSKPD);
+
+diff --git a/drivers/gpu/drm/radeon/radeon_cursor.c b/drivers/gpu/drm/radeon/radeon_cursor.c
+index fa661744a1f5..cba23008eca4 100644
+--- a/drivers/gpu/drm/radeon/radeon_cursor.c
++++ b/drivers/gpu/drm/radeon/radeon_cursor.c
+@@ -90,6 +90,9 @@ static void radeon_show_cursor(struct drm_crtc *crtc)
+ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+ struct radeon_device *rdev = crtc->dev->dev_private;
+
++ if (radeon_crtc->cursor_out_of_bounds)
++ return;
++
+ if (ASIC_IS_DCE4(rdev)) {
+ WREG32(RADEON_MM_INDEX, EVERGREEN_CUR_CONTROL + radeon_crtc->crtc_offset);
+ WREG32(RADEON_MM_DATA, EVERGREEN_CURSOR_EN |
+@@ -124,21 +127,25 @@ static int radeon_cursor_move_locked(struct drm_crtc *crtc, int x, int y)
+ int xorigin = 0, yorigin = 0;
+ int w = radeon_crtc->cursor_width;
+
++ radeon_crtc->cursor_x = x;
++ radeon_crtc->cursor_y = y;
++
+ if (ASIC_IS_AVIVO(rdev)) {
+ /* avivo cursor are offset into the total surface */
+ x += crtc->x;
+ y += crtc->y;
+ }
+- DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);
+
+- if (x < 0) {
++ if (x < 0)
+ xorigin = min(-x, radeon_crtc->max_cursor_width - 1);
+- x = 0;
+- }
+- if (y < 0) {
++ if (y < 0)
+ yorigin = min(-y, radeon_crtc->max_cursor_height - 1);
+- y = 0;
++
++ if (!ASIC_IS_AVIVO(rdev)) {
++ x += crtc->x;
++ y += crtc->y;
+ }
++ DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);
+
+ /* fixed on DCE6 and newer */
+ if (ASIC_IS_AVIVO(rdev) && !ASIC_IS_DCE6(rdev)) {
+@@ -161,27 +168,31 @@ static int radeon_cursor_move_locked(struct drm_crtc *crtc, int x, int y)
+ if (i > 1) {
+ int cursor_end, frame_end;
+
+- cursor_end = x - xorigin + w;
++ cursor_end = x + w;
+ frame_end = crtc->x + crtc->mode.crtc_hdisplay;
+ if (cursor_end >= frame_end) {
+ w = w - (cursor_end - frame_end);
+ if (!(frame_end & 0x7f))
+ w--;
+- } else {
+- if (!(cursor_end & 0x7f))
+- w--;
++ } else if (cursor_end <= 0) {
++ goto out_of_bounds;
++ } else if (!(cursor_end & 0x7f)) {
++ w--;
+ }
+ if (w <= 0) {
+- w = 1;
+- cursor_end = x - xorigin + w;
+- if (!(cursor_end & 0x7f)) {
+- x--;
+- WARN_ON_ONCE(x < 0);
+- }
++ goto out_of_bounds;
+ }
+ }
+ }
+
++ if (x <= (crtc->x - w) || y <= (crtc->y - radeon_crtc->cursor_height) ||
++ x >= (crtc->x + crtc->mode.crtc_hdisplay) ||
++ y >= (crtc->y + crtc->mode.crtc_vdisplay))
++ goto out_of_bounds;
++
++ x += xorigin;
++ y += yorigin;
++
+ if (ASIC_IS_DCE4(rdev)) {
+ WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, (x << 16) | y);
+ WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
+@@ -193,6 +204,9 @@ static int radeon_cursor_move_locked(struct drm_crtc *crtc, int x, int y)
+ WREG32(AVIVO_D1CUR_SIZE + radeon_crtc->crtc_offset,
+ ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
+ } else {
++ x -= crtc->x;
++ y -= crtc->y;
++
+ if (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)
+ y *= 2;
+
+@@ -210,10 +224,20 @@ static int radeon_cursor_move_locked(struct drm_crtc *crtc, int x, int y)
+ yorigin * 256);
+ }
+
+- radeon_crtc->cursor_x = x;
+- radeon_crtc->cursor_y = y;
++ if (radeon_crtc->cursor_out_of_bounds) {
++ radeon_crtc->cursor_out_of_bounds = false;
++ if (radeon_crtc->cursor_bo)
++ radeon_show_cursor(crtc);
++ }
+
+ return 0;
++
++ out_of_bounds:
++ if (!radeon_crtc->cursor_out_of_bounds) {
++ radeon_hide_cursor(crtc);
++ radeon_crtc->cursor_out_of_bounds = true;
++ }
++ return 0;
+ }
+
+ int radeon_crtc_cursor_move(struct drm_crtc *crtc,
+@@ -306,22 +330,23 @@ int radeon_crtc_cursor_set2(struct drm_crtc *crtc,
+ return ret;
+ }
+
+- radeon_crtc->cursor_width = width;
+- radeon_crtc->cursor_height = height;
+-
+ radeon_lock_cursor(crtc, true);
+
+- if (hot_x != radeon_crtc->cursor_hot_x ||
++ if (width != radeon_crtc->cursor_width ||
++ height != radeon_crtc->cursor_height ||
++ hot_x != radeon_crtc->cursor_hot_x ||
+ hot_y != radeon_crtc->cursor_hot_y) {
+ int x, y;
+
+ x = radeon_crtc->cursor_x + radeon_crtc->cursor_hot_x - hot_x;
+ y = radeon_crtc->cursor_y + radeon_crtc->cursor_hot_y - hot_y;
+
+- radeon_cursor_move_locked(crtc, x, y);
+-
++ radeon_crtc->cursor_width = width;
++ radeon_crtc->cursor_height = height;
+ radeon_crtc->cursor_hot_x = hot_x;
+ radeon_crtc->cursor_hot_y = hot_y;
++
++ radeon_cursor_move_locked(crtc, x, y);
+ }
+
+ radeon_set_cursor(crtc);
+diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
+index 43ba333949c7..3974e03bd82f 100644
+--- a/drivers/gpu/drm/radeon/radeon_mode.h
++++ b/drivers/gpu/drm/radeon/radeon_mode.h
+@@ -330,6 +330,7 @@ struct radeon_crtc {
+ u16 lut_r[256], lut_g[256], lut_b[256];
+ bool enabled;
+ bool can_tile;
++ bool cursor_out_of_bounds;
+ uint32_t crtc_offset;
+ struct drm_gem_object *cursor_bo;
+ uint64_t cursor_addr;
+diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
+index a808ba001ee7..a717da729fb8 100644
+--- a/drivers/gpu/drm/radeon/si_dpm.c
++++ b/drivers/gpu/drm/radeon/si_dpm.c
+@@ -2975,6 +2975,7 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
+ (rdev->pdev->revision == 0x80) ||
+ (rdev->pdev->revision == 0x81) ||
+ (rdev->pdev->revision == 0x83) ||
++ (rdev->pdev->revision == 0x87) ||
+ (rdev->pdev->device == 0x6604) ||
+ (rdev->pdev->device == 0x6605)) {
+ max_sclk = 75000;
+diff --git a/drivers/infiniband/core/multicast.c b/drivers/infiniband/core/multicast.c
+index fa17b552ff78..aab811d4c0e1 100644
+--- a/drivers/infiniband/core/multicast.c
++++ b/drivers/infiniband/core/multicast.c
+@@ -526,8 +526,11 @@ static void join_handler(int status, struct ib_sa_mcmember_rec *rec,
+ process_join_error(group, status);
+ else {
+ int mgids_changed, is_mgid0;
+- ib_find_pkey(group->port->dev->device, group->port->port_num,
+- be16_to_cpu(rec->pkey), &pkey_index);
++
++ if (ib_find_pkey(group->port->dev->device,
++ group->port->port_num, be16_to_cpu(rec->pkey),
++ &pkey_index))
++ pkey_index = MCAST_INVALID_PKEY_INDEX;
+
+ spin_lock_irq(&group->port->lock);
+ if (group->state == MCAST_BUSY &&
+diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+index 0d23e0568deb..b9705395b0aa 100644
+--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
++++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+@@ -522,8 +522,11 @@ void ipoib_mcast_join_task(struct work_struct *work)
+ if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags))
+ return;
+
+- if (ib_query_port(priv->ca, priv->port, &port_attr) ||
+- port_attr.state != IB_PORT_ACTIVE) {
++ if (ib_query_port(priv->ca, priv->port, &port_attr)) {
++ ipoib_dbg(priv, "ib_query_port() failed\n");
++ return;
++ }
++ if (port_attr.state != IB_PORT_ACTIVE) {
+ ipoib_dbg(priv, "port state is not ACTIVE (state = %d) suspending join task\n",
+ port_attr.state);
+ return;
+diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c
+index 599578042ea0..009f75d25268 100644
+--- a/drivers/input/misc/drv260x.c
++++ b/drivers/input/misc/drv260x.c
+@@ -597,7 +597,6 @@ static int drv260x_probe(struct i2c_client *client,
+ }
+
+ haptics->input_dev->name = "drv260x:haptics";
+- haptics->input_dev->dev.parent = client->dev.parent;
+ haptics->input_dev->close = drv260x_close;
+ input_set_drvdata(haptics->input_dev, haptics);
+ input_set_capability(haptics->input_dev, EV_FF, FF_RUMBLE);
+diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
+index ce507a405d05..ab16f33b743b 100644
+--- a/drivers/md/dm-crypt.c
++++ b/drivers/md/dm-crypt.c
+@@ -1482,12 +1482,15 @@ static int crypt_set_key(struct crypt_config *cc, char *key)
+ if (!cc->key_size && strcmp(key, "-"))
+ goto out;
+
++ /* clear the flag since following operations may invalidate previously valid key */
++ clear_bit(DM_CRYPT_KEY_VALID, &cc->flags);
++
+ if (cc->key_size && crypt_decode_key(cc->key, key, cc->key_size) < 0)
+ goto out;
+
+- set_bit(DM_CRYPT_KEY_VALID, &cc->flags);
+-
+ r = crypt_setkey_allcpus(cc);
++ if (!r)
++ set_bit(DM_CRYPT_KEY_VALID, &cc->flags);
+
+ out:
+ /* Hex key string not needed after here, so wipe it. */
+diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c
+index 53091295fce9..4ca451e679a3 100644
+--- a/drivers/md/persistent-data/dm-space-map-metadata.c
++++ b/drivers/md/persistent-data/dm-space-map-metadata.c
+@@ -766,17 +766,15 @@ int dm_sm_metadata_create(struct dm_space_map *sm,
+ memcpy(&smm->sm, &bootstrap_ops, sizeof(smm->sm));
+
+ r = sm_ll_new_metadata(&smm->ll, tm);
++ if (!r) {
++ if (nr_blocks > DM_SM_METADATA_MAX_BLOCKS)
++ nr_blocks = DM_SM_METADATA_MAX_BLOCKS;
++ r = sm_ll_extend(&smm->ll, nr_blocks);
++ }
++ memcpy(&smm->sm, &ops, sizeof(smm->sm));
+ if (r)
+ return r;
+
+- if (nr_blocks > DM_SM_METADATA_MAX_BLOCKS)
+- nr_blocks = DM_SM_METADATA_MAX_BLOCKS;
+- r = sm_ll_extend(&smm->ll, nr_blocks);
+- if (r)
+- return r;
+-
+- memcpy(&smm->sm, &ops, sizeof(smm->sm));
+-
+ /*
+ * Now we need to update the newly created data structures with the
+ * allocated blocks that they were built from.
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index ef0a99a3a779..e6d689c0a175 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -6918,6 +6918,15 @@ static int run(struct mddev *mddev)
+ stripe = (stripe | (stripe-1)) + 1;
+ mddev->queue->limits.discard_alignment = stripe;
+ mddev->queue->limits.discard_granularity = stripe;
++
++ /*
++ * We use 16-bit counter of active stripes in bi_phys_segments
++ * (minus one for over-loaded initialization)
++ */
++ blk_queue_max_hw_sectors(mddev->queue, 0xfffe * STRIPE_SECTORS);
++ blk_queue_max_discard_sectors(mddev->queue,
++ 0xfffe * STRIPE_SECTORS);
++
+ /*
+ * unaligned part of discard request will be ignored, so can't
+ * guarantee discard_zeroes_data
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index 5eb23ae82def..fdc44c8200ba 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -2055,7 +2055,27 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
+ ctrl &= ~SDHCI_CTRL_EXEC_TUNING;
+ sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+
++ sdhci_do_reset(host, SDHCI_RESET_CMD);
++ sdhci_do_reset(host, SDHCI_RESET_DATA);
++
+ err = -EIO;
++
++ if (cmd.opcode != MMC_SEND_TUNING_BLOCK_HS200)
++ goto out;
++
++ sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
++ sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
++
++ spin_unlock_irqrestore(&host->lock, flags);
++
++ memset(&cmd, 0, sizeof(cmd));
++ cmd.opcode = MMC_STOP_TRANSMISSION;
++ cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
++ cmd.busy_timeout = 50;
++ mmc_wait_for_cmd(mmc, &cmd, 0);
++
++ spin_lock_irqsave(&host->lock, flags);
++
+ goto out;
+ }
+
+diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
+index 7cdaf40c3057..ea7b8c25955f 100644
+--- a/drivers/net/wireless/ath/ath9k/pci.c
++++ b/drivers/net/wireless/ath/ath9k/pci.c
+@@ -27,7 +27,6 @@ static const struct pci_device_id ath_pci_id_table[] = {
+ { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */
+ { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
+ { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
+- { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
+
+ #ifdef CONFIG_ATH9K_PCOEM
+ /* Mini PCI AR9220 MB92 cards: Compex WLM200NX, Wistron DNMA-92 */
+@@ -38,7 +37,7 @@ static const struct pci_device_id ath_pci_id_table[] = {
+ .driver_data = ATH9K_PCI_LED_ACT_HI },
+ #endif
+
+- { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
++ { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
+
+ #ifdef CONFIG_ATH9K_PCOEM
+ { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
+@@ -86,7 +85,11 @@ static const struct pci_device_id ath_pci_id_table[] = {
+ 0x10CF, /* Fujitsu */
+ 0x1536),
+ .driver_data = ATH9K_PCI_D3_L1_WAR },
++#endif
+
++ { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
++
++#ifdef CONFIG_ATH9K_PCOEM
+ /* AR9285 card for Asus */
+ { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
+ 0x002B,
+diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
+index 4e720ed402ef..66c12c8f968b 100644
+--- a/drivers/pci/pci.c
++++ b/drivers/pci/pci.c
+@@ -1993,6 +1993,10 @@ bool pci_dev_run_wake(struct pci_dev *dev)
+ if (!dev->pme_support)
+ return false;
+
++ /* PME-capable in principle, but not from the intended sleep state */
++ if (!pci_pme_capable(dev, pci_target_state(dev)))
++ return false;
++
+ while (bus->parent) {
+ struct pci_dev *bridge = bus->self;
+
+diff --git a/drivers/regulator/stw481x-vmmc.c b/drivers/regulator/stw481x-vmmc.c
+index 7d2ae3e9e942..342f5da79975 100644
+--- a/drivers/regulator/stw481x-vmmc.c
++++ b/drivers/regulator/stw481x-vmmc.c
+@@ -47,7 +47,8 @@ static struct regulator_desc vmmc_regulator = {
+ .volt_table = stw481x_vmmc_voltages,
+ .enable_time = 200, /* FIXME: look this up */
+ .enable_reg = STW_CONF1,
+- .enable_mask = STW_CONF1_PDN_VMMC,
++ .enable_mask = STW_CONF1_PDN_VMMC | STW_CONF1_MMC_LS_STATUS,
++ .enable_val = STW_CONF1_PDN_VMMC,
+ .vsel_reg = STW_CONF1,
+ .vsel_mask = STW_CONF1_VMMC_MASK,
+ };
+diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
+index 9bb48d70957c..4d20f7298cb8 100644
+--- a/drivers/s390/char/vmlogrdr.c
++++ b/drivers/s390/char/vmlogrdr.c
+@@ -872,7 +872,7 @@ static int __init vmlogrdr_init(void)
+ goto cleanup;
+
+ for (i=0; i < MAXMINOR; ++i ) {
+- sys_ser[i].buffer = (char *) get_zeroed_page(GFP_KERNEL);
++ sys_ser[i].buffer = (char *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!sys_ser[i].buffer) {
+ rc = -ENOMEM;
+ break;
+diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
+index 5a0800d19970..bd6f71b97710 100644
+--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
++++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
+@@ -2490,6 +2490,7 @@ int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
+ printk("megaraid_sas: pending commands remain after waiting, "
+ "will reset adapter scsi%d.\n",
+ instance->host->host_no);
++ *convert = 1;
+ retval = 1;
+ }
+ out:
+diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
+index 9ad41168d26d..72699ac0a0c4 100644
+--- a/drivers/scsi/scsi_sysfs.c
++++ b/drivers/scsi/scsi_sysfs.c
+@@ -1005,10 +1005,6 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
+ struct request_queue *rq = sdev->request_queue;
+ struct scsi_target *starget = sdev->sdev_target;
+
+- error = scsi_device_set_state(sdev, SDEV_RUNNING);
+- if (error)
+- return error;
+-
+ error = scsi_target_add(starget);
+ if (error)
+ return error;
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index ec192939750e..26bc4e9c7441 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -592,6 +592,9 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
+ sg_io_hdr_t *hp;
+ unsigned char cmnd[SG_MAX_CDB_SIZE];
+
++ if (unlikely(segment_eq(get_fs(), KERNEL_DS)))
++ return -EINVAL;
++
+ if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
+ return -ENXIO;
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+diff --git a/drivers/ssb/pci.c b/drivers/ssb/pci.c
+index 0f28c08fcb3c..77b551da5728 100644
+--- a/drivers/ssb/pci.c
++++ b/drivers/ssb/pci.c
+@@ -909,6 +909,7 @@ static int ssb_pci_sprom_get(struct ssb_bus *bus,
+ if (err) {
+ ssb_warn("WARNING: Using fallback SPROM failed (err %d)\n",
+ err);
++ goto out_free;
+ } else {
+ ssb_dbg("Using SPROM revision %d provided by platform\n",
+ sprom->revision);
+diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
+index 4b8da862cd7e..f7bcefd46b5e 100644
+--- a/drivers/staging/comedi/drivers/ni_mio_common.c
++++ b/drivers/staging/comedi/drivers/ni_mio_common.c
+@@ -2079,7 +2079,7 @@ static int ni_ai_insn_read(struct comedi_device *dev,
+ unsigned int *data)
+ {
+ struct ni_private *devpriv = dev->private;
+- unsigned int mask = (s->maxdata + 1) >> 1;
++ unsigned int mask = s->maxdata;
+ int i, n;
+ unsigned signbits;
+ unsigned int d;
+diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
+index 07d2996d8c1f..39e8f22be68b 100644
+--- a/drivers/target/target_core_user.c
++++ b/drivers/target/target_core_user.c
+@@ -605,8 +605,6 @@ static int tcmu_check_expired_cmd(int id, void *p, void *data)
+ target_complete_cmd(cmd->se_cmd, SAM_STAT_CHECK_CONDITION);
+ cmd->se_cmd = NULL;
+
+- kmem_cache_free(tcmu_cmd_cache, cmd);
+-
+ return 0;
+ }
+
+diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
+index 1967bee4f076..9035fbc5e98d 100644
+--- a/drivers/thermal/thermal_hwmon.c
++++ b/drivers/thermal/thermal_hwmon.c
+@@ -98,7 +98,7 @@ temp_crit_show(struct device *dev, struct device_attribute *attr, char *buf)
+ long temperature;
+ int ret;
+
+- ret = tz->ops->get_trip_temp(tz, 0, &temperature);
++ ret = tz->ops->get_crit_temp(tz, &temperature);
+ if (ret)
+ return ret;
+
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index 41dcefe67b43..84532dc93801 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1720,6 +1720,7 @@ static const struct usb_device_id acm_ids[] = {
+ { USB_DEVICE(0x20df, 0x0001), /* Simtec Electronics Entropy Key */
+ .driver_info = QUIRK_CONTROL_LINE_STATE, },
+ { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */
++ { USB_DEVICE(0x2184, 0x0036) }, /* GW Instek AFG-125 */
+ { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
+ },
+ /* Motorola H24 HSPA module: */
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index c98f78b0bf11..7602eceb5403 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -101,6 +101,8 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem);
+
+ static void hub_release(struct kref *kref);
+ static int usb_reset_and_verify_device(struct usb_device *udev);
++static void hub_usb3_port_prepare_disable(struct usb_hub *hub,
++ struct usb_port *port_dev);
+
+ static inline char *portspeed(struct usb_hub *hub, int portstatus)
+ {
+@@ -882,82 +884,28 @@ static int hub_set_port_link_state(struct usb_hub *hub, int port1,
+ }
+
+ /*
+- * If USB 3.0 ports are placed into the Disabled state, they will no longer
+- * detect any device connects or disconnects. This is generally not what the
+- * USB core wants, since it expects a disabled port to produce a port status
+- * change event when a new device connects.
+- *
+- * Instead, set the link state to Disabled, wait for the link to settle into
+- * that state, clear any change bits, and then put the port into the RxDetect
+- * state.
++ * USB-3 does not have a similar link state as USB-2 that will avoid negotiating
++ * a connection with a plugged-in cable but will signal the host when the cable
++ * is unplugged. Disable remote wake and set link state to U3 for USB-3 devices
+ */
+-static int hub_usb3_port_disable(struct usb_hub *hub, int port1)
+-{
+- int ret;
+- int total_time;
+- u16 portchange, portstatus;
+-
+- if (!hub_is_superspeed(hub->hdev))
+- return -EINVAL;
+-
+- ret = hub_port_status(hub, port1, &portstatus, &portchange);
+- if (ret < 0)
+- return ret;
+-
+- /*
+- * USB controller Advanced Micro Devices, Inc. [AMD] FCH USB XHCI
+- * Controller [1022:7814] will have spurious result making the following
+- * usb 3.0 device hotplugging route to the 2.0 root hub and recognized
+- * as high-speed device if we set the usb 3.0 port link state to
+- * Disabled. Since it's already in USB_SS_PORT_LS_RX_DETECT state, we
+- * check the state here to avoid the bug.
+- */
+- if ((portstatus & USB_PORT_STAT_LINK_STATE) ==
+- USB_SS_PORT_LS_RX_DETECT) {
+- dev_dbg(&hub->ports[port1 - 1]->dev,
+- "Not disabling port; link state is RxDetect\n");
+- return ret;
+- }
+-
+- ret = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_SS_DISABLED);
+- if (ret)
+- return ret;
+-
+- /* Wait for the link to enter the disabled state. */
+- for (total_time = 0; ; total_time += HUB_DEBOUNCE_STEP) {
+- ret = hub_port_status(hub, port1, &portstatus, &portchange);
+- if (ret < 0)
+- return ret;
+-
+- if ((portstatus & USB_PORT_STAT_LINK_STATE) ==
+- USB_SS_PORT_LS_SS_DISABLED)
+- break;
+- if (total_time >= HUB_DEBOUNCE_TIMEOUT)
+- break;
+- msleep(HUB_DEBOUNCE_STEP);
+- }
+- if (total_time >= HUB_DEBOUNCE_TIMEOUT)
+- dev_warn(&hub->ports[port1 - 1]->dev,
+- "Could not disable after %d ms\n", total_time);
+-
+- return hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_RX_DETECT);
+-}
+-
+ static int hub_port_disable(struct usb_hub *hub, int port1, int set_state)
+ {
+ struct usb_port *port_dev = hub->ports[port1 - 1];
+ struct usb_device *hdev = hub->hdev;
+ int ret = 0;
+
+- if (port_dev->child && set_state)
+- usb_set_device_state(port_dev->child, USB_STATE_NOTATTACHED);
+ if (!hub->error) {
+- if (hub_is_superspeed(hub->hdev))
+- ret = hub_usb3_port_disable(hub, port1);
+- else
++ if (hub_is_superspeed(hub->hdev)) {
++ hub_usb3_port_prepare_disable(hub, port_dev);
++ ret = hub_set_port_link_state(hub, port_dev->portnum,
++ USB_SS_PORT_LS_U3);
++ } else {
+ ret = usb_clear_port_feature(hdev, port1,
+ USB_PORT_FEAT_ENABLE);
++ }
+ }
++ if (port_dev->child && set_state)
++ usb_set_device_state(port_dev->child, USB_STATE_NOTATTACHED);
+ if (ret && ret != -ENODEV)
+ dev_err(&port_dev->dev, "cannot disable (err = %d)\n", ret);
+ return ret;
+@@ -4036,6 +3984,26 @@ void usb_unlocked_enable_lpm(struct usb_device *udev)
+ }
+ EXPORT_SYMBOL_GPL(usb_unlocked_enable_lpm);
+
++/* usb3 devices use U3 for disabled, make sure remote wakeup is disabled */
++static void hub_usb3_port_prepare_disable(struct usb_hub *hub,
++ struct usb_port *port_dev)
++{
++ struct usb_device *udev = port_dev->child;
++ int ret;
++
++ if (udev && udev->port_is_suspended && udev->do_remote_wakeup) {
++ ret = hub_set_port_link_state(hub, port_dev->portnum,
++ USB_SS_PORT_LS_U0);
++ if (!ret) {
++ msleep(USB_RESUME_TIMEOUT);
++ ret = usb_disable_remote_wakeup(udev);
++ }
++ if (ret)
++ dev_warn(&udev->dev,
++ "Port disable: can't disable remote wake\n");
++ udev->do_remote_wakeup = 0;
++ }
++}
+
+ #else /* CONFIG_PM */
+
+@@ -4043,6 +4011,9 @@ EXPORT_SYMBOL_GPL(usb_unlocked_enable_lpm);
+ #define hub_resume NULL
+ #define hub_reset_resume NULL
+
++static inline void hub_usb3_port_prepare_disable(struct usb_hub *hub,
++ struct usb_port *port_dev) { }
++
+ int usb_disable_lpm(struct usb_device *udev)
+ {
+ return 0;
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index 58b4657fc721..9cd76cc8c0d9 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -143,7 +143,7 @@ int config_ep_by_speed(struct usb_gadget *g,
+
+ ep_found:
+ /* commit results */
+- _ep->maxpacket = usb_endpoint_maxp(chosen_desc);
++ _ep->maxpacket = usb_endpoint_maxp(chosen_desc) & 0x7ff;
+ _ep->desc = chosen_desc;
+ _ep->comp_desc = NULL;
+ _ep->maxburst = 0;
+diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c
+index 940304c33224..02260cfdedb1 100644
+--- a/drivers/usb/host/uhci-pci.c
++++ b/drivers/usb/host/uhci-pci.c
+@@ -129,6 +129,10 @@ static int uhci_pci_init(struct usb_hcd *hcd)
+ if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_HP)
+ uhci->wait_for_hp = 1;
+
++ /* Intel controllers use non-PME wakeup signalling */
++ if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_INTEL)
++ device_set_run_wake(uhci_dev(uhci), 1);
++
+ /* Set up pointers to PCI-specific functions */
+ uhci->reset_hc = uhci_pci_reset_hc;
+ uhci->check_and_reset_hc = uhci_pci_check_and_reset_hc;
+diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
+index e020ad28a00c..53c90131764d 100644
+--- a/drivers/usb/serial/kl5kusb105.c
++++ b/drivers/usb/serial/kl5kusb105.c
+@@ -296,7 +296,7 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port)
+ rc = usb_serial_generic_open(tty, port);
+ if (rc) {
+ retval = rc;
+- goto exit;
++ goto err_free_cfg;
+ }
+
+ rc = usb_control_msg(port->serial->dev,
+@@ -315,17 +315,32 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port)
+ dev_dbg(&port->dev, "%s - enabled reading\n", __func__);
+
+ rc = klsi_105_get_line_state(port, &line_state);
+- if (rc >= 0) {
+- spin_lock_irqsave(&priv->lock, flags);
+- priv->line_state = line_state;
+- spin_unlock_irqrestore(&priv->lock, flags);
+- dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, line_state);
+- retval = 0;
+- } else
++ if (rc < 0) {
+ retval = rc;
++ goto err_disable_read;
++ }
++
++ spin_lock_irqsave(&priv->lock, flags);
++ priv->line_state = line_state;
++ spin_unlock_irqrestore(&priv->lock, flags);
++ dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__,
++ line_state);
++
++ return 0;
+
+-exit:
++err_disable_read:
++ usb_control_msg(port->serial->dev,
++ usb_sndctrlpipe(port->serial->dev, 0),
++ KL5KUSB105A_SIO_CONFIGURE,
++ USB_TYPE_VENDOR | USB_DIR_OUT,
++ KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
++ 0, /* index */
++ NULL, 0,
++ KLSI_TIMEOUT);
++ usb_serial_generic_close(port);
++err_free_cfg:
+ kfree(cfg);
++
+ return retval;
+ }
+
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index a599e8a841b0..248dac170f39 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -271,6 +271,8 @@ static void option_instat_callback(struct urb *urb);
+ #define TELIT_PRODUCT_CC864_SINGLE 0x1006
+ #define TELIT_PRODUCT_DE910_DUAL 0x1010
+ #define TELIT_PRODUCT_UE910_V2 0x1012
++#define TELIT_PRODUCT_LE922_USBCFG1 0x1040
++#define TELIT_PRODUCT_LE922_USBCFG2 0x1041
+ #define TELIT_PRODUCT_LE922_USBCFG0 0x1042
+ #define TELIT_PRODUCT_LE922_USBCFG3 0x1043
+ #define TELIT_PRODUCT_LE922_USBCFG5 0x1045
+@@ -1222,6 +1224,10 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UE910_V2) },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG0),
+ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG1),
++ .driver_info = (kernel_ulong_t)&telit_le910_blacklist },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG2),
++ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG3),
+ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG5, 0xff),
+@@ -2001,6 +2007,7 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d02, 0xff, 0x00, 0x00) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x02, 0x01) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x00, 0x00) },
++ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff) }, /* D-Link DWM-158 */
+ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e19, 0xff), /* D-Link DWM-221 B1 */
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */
+diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
+index ee71baddbb10..e227eb09b1a0 100644
+--- a/drivers/xen/gntdev.c
++++ b/drivers/xen/gntdev.c
+@@ -804,7 +804,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
+
+ vma->vm_ops = &gntdev_vmops;
+
+- vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP | VM_IO;
++ vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP | VM_MIXEDMAP;
+
+ if (use_ptemod)
+ vma->vm_flags |= VM_DONTCOPY;
+diff --git a/fs/block_dev.c b/fs/block_dev.c
+index ccfd31f1df3a..300566ea9b74 100644
+--- a/fs/block_dev.c
++++ b/fs/block_dev.c
+@@ -729,7 +729,7 @@ static bool bd_may_claim(struct block_device *bdev, struct block_device *whole,
+ return true; /* already a holder */
+ else if (bdev->bd_holder != NULL)
+ return false; /* held by someone else */
+- else if (bdev->bd_contains == bdev)
++ else if (whole == bdev)
+ return true; /* is a whole device which isn't held */
+
+ else if (whole->bd_holder == bd_may_claim)
+@@ -1772,6 +1772,7 @@ void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg)
+ spin_lock(&inode_sb_list_lock);
+ list_for_each_entry(inode, &blockdev_superblock->s_inodes, i_sb_list) {
+ struct address_space *mapping = inode->i_mapping;
++ struct block_device *bdev;
+
+ spin_lock(&inode->i_lock);
+ if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW) ||
+@@ -1792,8 +1793,12 @@ void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg)
+ */
+ iput(old_inode);
+ old_inode = inode;
++ bdev = I_BDEV(inode);
+
+- func(I_BDEV(inode), arg);
++ mutex_lock(&bdev->bd_mutex);
++ if (bdev->bd_openers)
++ func(bdev, arg);
++ mutex_unlock(&bdev->bd_mutex);
+
+ spin_lock(&inode_sb_list_lock);
+ }
+diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
+index 1848705506ff..0ce4de6430ef 100644
+--- a/fs/btrfs/async-thread.c
++++ b/fs/btrfs/async-thread.c
+@@ -64,6 +64,20 @@ void btrfs_##name(struct work_struct *arg) \
+ normal_work_helper(work); \
+ }
+
++bool btrfs_workqueue_normal_congested(struct btrfs_workqueue *wq)
++{
++ /*
++ * We could compare wq->normal->pending with num_online_cpus()
++ * to support "thresh == NO_THRESHOLD" case, but it requires
++ * moving up atomic_inc/dec in thresh_queue/exec_hook. Let's
++ * postpone it until someone needs the support of that case.
++ */
++ if (wq->normal->thresh == NO_THRESHOLD)
++ return false;
++
++ return atomic_read(&wq->normal->pending) > wq->normal->thresh * 2;
++}
++
+ BTRFS_WORK_HELPER(worker_helper);
+ BTRFS_WORK_HELPER(delalloc_helper);
+ BTRFS_WORK_HELPER(flush_delalloc_helper);
+diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h
+index ec2ee477f8ba..8c4564204f25 100644
+--- a/fs/btrfs/async-thread.h
++++ b/fs/btrfs/async-thread.h
+@@ -78,4 +78,5 @@ void btrfs_queue_work(struct btrfs_workqueue *wq,
+ void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
+ void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
+ void btrfs_set_work_high_priority(struct btrfs_work *work);
++bool btrfs_workqueue_normal_congested(struct btrfs_workqueue *wq);
+ #endif
+diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
+index bc2d048a9eb9..8265b0754dca 100644
+--- a/fs/btrfs/delayed-inode.c
++++ b/fs/btrfs/delayed-inode.c
+@@ -1371,7 +1371,8 @@ release_path:
+ total_done++;
+
+ btrfs_release_prepared_delayed_node(delayed_node);
+- if (async_work->nr == 0 || total_done < async_work->nr)
++ if ((async_work->nr == 0 && total_done < BTRFS_DELAYED_WRITEBACK) ||
++ total_done < async_work->nr)
+ goto again;
+
+ free_path:
+@@ -1387,7 +1388,8 @@ static int btrfs_wq_run_delayed_node(struct btrfs_delayed_root *delayed_root,
+ {
+ struct btrfs_async_delayed_work *async_work;
+
+- if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND)
++ if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND ||
++ btrfs_workqueue_normal_congested(fs_info->delayed_workers))
+ return 0;
+
+ async_work = kmalloc(sizeof(*async_work), GFP_NOFS);
+diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
+index 32ecb95f6214..6ee954c62fe6 100644
+--- a/fs/btrfs/tree-log.c
++++ b/fs/btrfs/tree-log.c
+@@ -1821,12 +1821,11 @@ static noinline int find_dir_range(struct btrfs_root *root,
+ next:
+ /* check the next slot in the tree to see if it is a valid item */
+ nritems = btrfs_header_nritems(path->nodes[0]);
++ path->slots[0]++;
+ if (path->slots[0] >= nritems) {
+ ret = btrfs_next_leaf(root, path);
+ if (ret)
+ goto out;
+- } else {
+- path->slots[0]++;
+ }
+
+ btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
+@@ -4984,6 +4983,7 @@ process_leaf:
+ if (di_key.type == BTRFS_ROOT_ITEM_KEY)
+ continue;
+
++ btrfs_release_path(path);
+ di_inode = btrfs_iget(root->fs_info->sb, &di_key,
+ root, NULL);
+ if (IS_ERR(di_inode)) {
+@@ -4993,13 +4993,12 @@ process_leaf:
+
+ if (btrfs_inode_in_log(di_inode, trans->transid)) {
+ iput(di_inode);
+- continue;
++ break;
+ }
+
+ ctx->log_new_dentries = false;
+ if (type == BTRFS_FT_DIR)
+ log_mode = LOG_INODE_ALL;
+- btrfs_release_path(path);
+ ret = btrfs_log_inode(trans, root, di_inode,
+ log_mode, 0, LLONG_MAX, ctx);
+ iput(di_inode);
+diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
+index 22b289a3b1c4..9d0e4fef8ee1 100644
+--- a/fs/cifs/cifsglob.h
++++ b/fs/cifs/cifsglob.h
+@@ -615,6 +615,8 @@ struct TCP_Server_Info {
+ #ifdef CONFIG_CIFS_SMB2
+ unsigned int max_read;
+ unsigned int max_write;
++ struct delayed_work reconnect; /* reconnect workqueue job */
++ struct mutex reconnect_mutex; /* prevent simultaneous reconnects */
+ #endif /* CONFIG_CIFS_SMB2 */
+ };
+
+@@ -814,6 +816,7 @@ cap_unix(struct cifs_ses *ses)
+ struct cifs_tcon {
+ struct list_head tcon_list;
+ int tc_count;
++ struct list_head rlist; /* reconnect list */
+ struct list_head openFileList;
+ struct cifs_ses *ses; /* pointer to session associated with */
+ char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
+diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
+index f730c065df34..5ee60b50d8eb 100644
+--- a/fs/cifs/cifsproto.h
++++ b/fs/cifs/cifsproto.h
+@@ -207,6 +207,9 @@ extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
+ struct tcon_link *tlink,
+ struct cifs_pending_open *open);
+ extern void cifs_del_pending_open(struct cifs_pending_open *open);
++extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
++ int from_reconnect);
++extern void cifs_put_tcon(struct cifs_tcon *tcon);
+
+ #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
+ extern void cifs_dfs_release_automount_timer(void);
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index cd9d50e4f5f4..7d7bd466520b 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -52,6 +52,9 @@
+ #include "nterr.h"
+ #include "rfc1002pdu.h"
+ #include "fscache.h"
++#ifdef CONFIG_CIFS_SMB2
++#include "smb2proto.h"
++#endif
+
+ #define CIFS_PORT 445
+ #define RFC1001_PORT 139
+@@ -2069,8 +2072,8 @@ cifs_find_tcp_session(struct smb_vol *vol)
+ return NULL;
+ }
+
+-static void
+-cifs_put_tcp_session(struct TCP_Server_Info *server)
++void
++cifs_put_tcp_session(struct TCP_Server_Info *server, int from_reconnect)
+ {
+ struct task_struct *task;
+
+@@ -2087,6 +2090,19 @@ cifs_put_tcp_session(struct TCP_Server_Info *server)
+
+ cancel_delayed_work_sync(&server->echo);
+
++#ifdef CONFIG_CIFS_SMB2
++ if (from_reconnect)
++ /*
++ * Avoid deadlock here: reconnect work calls
++ * cifs_put_tcp_session() at its end. Need to be sure
++ * that reconnect work does nothing with server pointer after
++ * that step.
++ */
++ cancel_delayed_work(&server->reconnect);
++ else
++ cancel_delayed_work_sync(&server->reconnect);
++#endif
++
+ spin_lock(&GlobalMid_Lock);
+ server->tcpStatus = CifsExiting;
+ spin_unlock(&GlobalMid_Lock);
+@@ -2151,6 +2167,10 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
+ INIT_LIST_HEAD(&tcp_ses->tcp_ses_list);
+ INIT_LIST_HEAD(&tcp_ses->smb_ses_list);
+ INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request);
++#ifdef CONFIG_CIFS_SMB2
++ INIT_DELAYED_WORK(&tcp_ses->reconnect, smb2_reconnect_server);
++ mutex_init(&tcp_ses->reconnect_mutex);
++#endif
+ memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr,
+ sizeof(tcp_ses->srcaddr));
+ memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr,
+@@ -2303,7 +2323,7 @@ cifs_put_smb_ses(struct cifs_ses *ses)
+ spin_unlock(&cifs_tcp_ses_lock);
+
+ sesInfoFree(ses);
+- cifs_put_tcp_session(server);
++ cifs_put_tcp_session(server, 0);
+ }
+
+ #ifdef CONFIG_KEYS
+@@ -2476,7 +2496,7 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
+ mutex_unlock(&ses->session_mutex);
+
+ /* existing SMB ses has a server reference already */
+- cifs_put_tcp_session(server);
++ cifs_put_tcp_session(server, 0);
+ free_xid(xid);
+ return ses;
+ }
+@@ -2566,7 +2586,7 @@ cifs_find_tcon(struct cifs_ses *ses, const char *unc)
+ return NULL;
+ }
+
+-static void
++void
+ cifs_put_tcon(struct cifs_tcon *tcon)
+ {
+ unsigned int xid;
+@@ -3673,7 +3693,7 @@ mount_fail_check:
+ else if (ses)
+ cifs_put_smb_ses(ses);
+ else
+- cifs_put_tcp_session(server);
++ cifs_put_tcp_session(server, 0);
+ bdi_destroy(&cifs_sb->bdi);
+ }
+
+@@ -3984,7 +4004,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
+ ses = cifs_get_smb_ses(master_tcon->ses->server, vol_info);
+ if (IS_ERR(ses)) {
+ tcon = (struct cifs_tcon *)ses;
+- cifs_put_tcp_session(master_tcon->ses->server);
++ cifs_put_tcp_session(master_tcon->ses->server, 0);
+ goto out;
+ }
+
+diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
+index 2ab297dae5a7..1bdfd7c5309c 100644
+--- a/fs/cifs/smb2file.c
++++ b/fs/cifs/smb2file.c
+@@ -241,7 +241,7 @@ smb2_push_mandatory_locks(struct cifsFileInfo *cfile)
+ * and check it for zero before using.
+ */
+ max_buf = tlink_tcon(cfile->tlink)->ses->server->maxBuf;
+- if (!max_buf) {
++ if (max_buf < sizeof(struct smb2_lock_element)) {
+ free_xid(xid);
+ return -EINVAL;
+ }
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 8f527c867f78..e3cf4a5fb35a 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -264,7 +264,7 @@ out:
+ case SMB2_CHANGE_NOTIFY:
+ case SMB2_QUERY_INFO:
+ case SMB2_SET_INFO:
+- return -EAGAIN;
++ rc = -EAGAIN;
+ }
+ unload_nls(nls_codepage);
+ return rc;
+@@ -1615,6 +1615,54 @@ smb2_echo_callback(struct mid_q_entry *mid)
+ add_credits(server, credits_received, CIFS_ECHO_OP);
+ }
+
++void smb2_reconnect_server(struct work_struct *work)
++{
++ struct TCP_Server_Info *server = container_of(work,
++ struct TCP_Server_Info, reconnect.work);
++ struct cifs_ses *ses;
++ struct cifs_tcon *tcon, *tcon2;
++ struct list_head tmp_list;
++ int tcon_exist = false;
++
++ /* Prevent simultaneous reconnects that can corrupt tcon->rlist list */
++ mutex_lock(&server->reconnect_mutex);
++
++ INIT_LIST_HEAD(&tmp_list);
++ cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n");
++
++ spin_lock(&cifs_tcp_ses_lock);
++ list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
++ list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
++ if (tcon->need_reconnect) {
++ tcon->tc_count++;
++ list_add_tail(&tcon->rlist, &tmp_list);
++ tcon_exist = true;
++ }
++ }
++ }
++ /*
++ * Get the reference to server struct to be sure that the last call of
++ * cifs_put_tcon() in the loop below won't release the server pointer.
++ */
++ if (tcon_exist)
++ server->srv_count++;
++
++ spin_unlock(&cifs_tcp_ses_lock);
++
++ list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) {
++ smb2_reconnect(SMB2_ECHO, tcon);
++ list_del_init(&tcon->rlist);
++ cifs_put_tcon(tcon);
++ }
++
++ cifs_dbg(FYI, "Reconnecting tcons finished\n");
++ mutex_unlock(&server->reconnect_mutex);
++
++ /* now we can safely release srv struct */
++ if (tcon_exist)
++ cifs_put_tcp_session(server, 1);
++}
++
+ int
+ SMB2_echo(struct TCP_Server_Info *server)
+ {
+@@ -1627,32 +1675,11 @@ SMB2_echo(struct TCP_Server_Info *server)
+ cifs_dbg(FYI, "In echo request\n");
+
+ if (server->tcpStatus == CifsNeedNegotiate) {
+- struct list_head *tmp, *tmp2;
+- struct cifs_ses *ses;
+- struct cifs_tcon *tcon;
+-
+- cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n");
+- spin_lock(&cifs_tcp_ses_lock);
+- list_for_each(tmp, &server->smb_ses_list) {
+- ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
+- list_for_each(tmp2, &ses->tcon_list) {
+- tcon = list_entry(tmp2, struct cifs_tcon,
+- tcon_list);
+- /* add check for persistent handle reconnect */
+- if (tcon && tcon->need_reconnect) {
+- spin_unlock(&cifs_tcp_ses_lock);
+- rc = smb2_reconnect(SMB2_ECHO, tcon);
+- spin_lock(&cifs_tcp_ses_lock);
+- }
+- }
+- }
+- spin_unlock(&cifs_tcp_ses_lock);
++ /* No need to send echo on newly established connections */
++ queue_delayed_work(cifsiod_wq, &server->reconnect, 0);
++ return rc;
+ }
+
+- /* if no session, renegotiate failed above */
+- if (server->tcpStatus == CifsNeedNegotiate)
+- return -EIO;
+-
+ rc = small_smb2_init(SMB2_ECHO, NULL, (void **)&req);
+ if (rc)
+ return rc;
+diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
+index 9bc59f9c12fb..0a406ae78129 100644
+--- a/fs/cifs/smb2proto.h
++++ b/fs/cifs/smb2proto.h
+@@ -95,6 +95,7 @@ extern int smb2_open_file(const unsigned int xid,
+ extern int smb2_unlock_range(struct cifsFileInfo *cfile,
+ struct file_lock *flock, const unsigned int xid);
+ extern int smb2_push_mandatory_locks(struct cifsFileInfo *cfile);
++extern void smb2_reconnect_server(struct work_struct *work);
+
+ /*
+ * SMB2 Worker functions - most of protocol specific implementation details
+diff --git a/fs/exec.c b/fs/exec.c
+index 1977c2a553ac..d392c8ad0de0 100644
+--- a/fs/exec.c
++++ b/fs/exec.c
+@@ -19,7 +19,7 @@
+ * current->executable is only used by the procfs. This allows a dispatch
+ * table to check for several different types of binary formats. We keep
+ * trying until we recognize the file or we run out of supported binary
+- * formats.
++ * formats.
+ */
+
+ #include <linux/slab.h>
+@@ -1108,6 +1108,13 @@ int flush_old_exec(struct linux_binprm * bprm)
+ flush_thread();
+ current->personality &= ~bprm->per_clear;
+
++ /*
++ * We have to apply CLOEXEC before we change whether the process is
++ * dumpable (in setup_new_exec) to avoid a race with a process in userspace
++ * trying to access the should-be-closed file descriptors of a process
++ * undergoing exec(2).
++ */
++ do_close_on_exec(current->files);
+ return 0;
+
+ out:
+@@ -1157,7 +1164,6 @@ void setup_new_exec(struct linux_binprm * bprm)
+ group */
+ current->self_exec_id++;
+ flush_signal_handlers(current, 0);
+- do_close_on_exec(current->files);
+ }
+ EXPORT_SYMBOL(setup_new_exec);
+
+diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
+index 145d6ba4117d..df67a6f8582a 100644
+--- a/fs/ext4/ext4.h
++++ b/fs/ext4/ext4.h
+@@ -224,6 +224,7 @@ struct ext4_io_submit {
+ #define EXT4_MAX_BLOCK_SIZE 65536
+ #define EXT4_MIN_BLOCK_LOG_SIZE 10
+ #define EXT4_MAX_BLOCK_LOG_SIZE 16
++#define EXT4_MAX_CLUSTER_LOG_SIZE 30
+ #ifdef __KERNEL__
+ # define EXT4_BLOCK_SIZE(s) ((s)->s_blocksize)
+ #else
+diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
+index 095c7a258d97..d77d542c2ed5 100644
+--- a/fs/ext4/inline.c
++++ b/fs/ext4/inline.c
+@@ -336,8 +336,10 @@ static int ext4_update_inline_data(handle_t *handle, struct inode *inode,
+
+ len -= EXT4_MIN_INLINE_DATA_SIZE;
+ value = kzalloc(len, GFP_NOFS);
+- if (!value)
++ if (!value) {
++ error = -ENOMEM;
+ goto out;
++ }
+
+ error = ext4_xattr_ibody_get(inode, i.name_index, i.name,
+ value, len);
+diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
+index 5b58e266892b..e6798ca34928 100644
+--- a/fs/ext4/mballoc.c
++++ b/fs/ext4/mballoc.c
+@@ -668,7 +668,7 @@ static void ext4_mb_mark_free_simple(struct super_block *sb,
+ ext4_grpblk_t min;
+ ext4_grpblk_t max;
+ ext4_grpblk_t chunk;
+- unsigned short border;
++ unsigned int border;
+
+ BUG_ON(len > EXT4_CLUSTERS_PER_GROUP(sb));
+
+@@ -2254,7 +2254,7 @@ static int ext4_mb_seq_groups_show(struct seq_file *seq, void *v)
+ struct ext4_group_info *grinfo;
+ struct sg {
+ struct ext4_group_info info;
+- ext4_grpblk_t counters[16];
++ ext4_grpblk_t counters[EXT4_MAX_BLOCK_LOG_SIZE + 2];
+ } sg;
+
+ group--;
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index 4723d8b02747..97aa8be40175 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -3361,10 +3361,15 @@ static int count_overhead(struct super_block *sb, ext4_group_t grp,
+ ext4_set_bit(s++, buf);
+ count++;
+ }
+- for (j = ext4_bg_num_gdb(sb, grp); j > 0; j--) {
+- ext4_set_bit(EXT4_B2C(sbi, s++), buf);
+- count++;
++ j = ext4_bg_num_gdb(sb, grp);
++ if (s + j > EXT4_BLOCKS_PER_GROUP(sb)) {
++ ext4_error(sb, "Invalid number of block group "
++ "descriptor blocks: %d", j);
++ j = EXT4_BLOCKS_PER_GROUP(sb) - s;
+ }
++ count += j;
++ for (; j > 0; j--)
++ ext4_set_bit(EXT4_B2C(sbi, s++), buf);
+ }
+ if (!count)
+ return 0;
+@@ -3736,7 +3741,15 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
+ if (blocksize < EXT4_MIN_BLOCK_SIZE ||
+ blocksize > EXT4_MAX_BLOCK_SIZE) {
+ ext4_msg(sb, KERN_ERR,
+- "Unsupported filesystem blocksize %d", blocksize);
++ "Unsupported filesystem blocksize %d (%d log_block_size)",
++ blocksize, le32_to_cpu(es->s_log_block_size));
++ goto failed_mount;
++ }
++ if (le32_to_cpu(es->s_log_block_size) >
++ (EXT4_MAX_BLOCK_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE)) {
++ ext4_msg(sb, KERN_ERR,
++ "Invalid log block size: %u",
++ le32_to_cpu(es->s_log_block_size));
+ goto failed_mount;
+ }
+
+@@ -3832,12 +3845,16 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
+
+ sbi->s_blocks_per_group = le32_to_cpu(es->s_blocks_per_group);
+ sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
+- if (EXT4_INODE_SIZE(sb) == 0 || EXT4_INODES_PER_GROUP(sb) == 0)
+- goto cantfind_ext4;
+
+ sbi->s_inodes_per_block = blocksize / EXT4_INODE_SIZE(sb);
+ if (sbi->s_inodes_per_block == 0)
+ goto cantfind_ext4;
++ if (sbi->s_inodes_per_group < sbi->s_inodes_per_block ||
++ sbi->s_inodes_per_group > blocksize * 8) {
++ ext4_msg(sb, KERN_ERR, "invalid inodes per group: %lu\n",
++ sbi->s_blocks_per_group);
++ goto failed_mount;
++ }
+ sbi->s_itb_per_group = sbi->s_inodes_per_group /
+ sbi->s_inodes_per_block;
+ sbi->s_desc_per_block = blocksize / EXT4_DESC_SIZE(sb);
+@@ -3878,6 +3895,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
+ "block size (%d)", clustersize, blocksize);
+ goto failed_mount;
+ }
++ if (le32_to_cpu(es->s_log_cluster_size) >
++ (EXT4_MAX_CLUSTER_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE)) {
++ ext4_msg(sb, KERN_ERR,
++ "Invalid log cluster size: %u",
++ le32_to_cpu(es->s_log_cluster_size));
++ goto failed_mount;
++ }
+ sbi->s_cluster_bits = le32_to_cpu(es->s_log_cluster_size) -
+ le32_to_cpu(es->s_log_block_size);
+ sbi->s_clusters_per_group =
+@@ -3914,13 +3938,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
+ }
+ sbi->s_cluster_ratio = clustersize / blocksize;
+
+- if (sbi->s_inodes_per_group > blocksize * 8) {
+- ext4_msg(sb, KERN_ERR,
+- "#inodes per group too big: %lu",
+- sbi->s_inodes_per_group);
+- goto failed_mount;
+- }
+-
+ /* Do we have standard group size of clustersize * 8 blocks ? */
+ if (sbi->s_blocks_per_group == clustersize << 3)
+ set_opt2(sb, STD_GROUP_SIZE);
+diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
+index f5388f37217e..bb73d0a0f387 100644
+--- a/fs/f2fs/debug.c
++++ b/fs/f2fs/debug.c
+@@ -339,6 +339,7 @@ static int stat_open(struct inode *inode, struct file *file)
+ }
+
+ static const struct file_operations stat_fops = {
++ .owner = THIS_MODULE,
+ .open = stat_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+diff --git a/fs/nfs/file.c b/fs/nfs/file.c
+index 8b8d83a526ce..ddf5f9fd719f 100644
+--- a/fs/nfs/file.c
++++ b/fs/nfs/file.c
+@@ -414,7 +414,7 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
+ */
+ if (!PageUptodate(page)) {
+ unsigned pglen = nfs_page_length(page);
+- unsigned end = offset + len;
++ unsigned end = offset + copied;
+
+ if (pglen == 0) {
+ zero_user_segments(page, 0, offset,
+diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
+index 1114afdd5a6b..4aefff89949d 100644
+--- a/fs/xfs/xfs_log_recover.c
++++ b/fs/xfs/xfs_log_recover.c
+@@ -3864,6 +3864,7 @@ xlog_recover_clear_agi_bucket(
+ agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
+ offset = offsetof(xfs_agi_t, agi_unlinked) +
+ (sizeof(xfs_agino_t) * bucket);
++ xfs_trans_buf_set_type(tp, agibp, XFS_BLFT_AGI_BUF);
+ xfs_trans_log_buf(tp, agibp, offset,
+ (offset + sizeof(xfs_agino_t) - 1));
+
+diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
+index ddd47c3a757d..c11f9d1963c3 100644
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -1940,8 +1940,8 @@ struct napi_gro_cb {
+ /* This is non-zero if the packet may be of the same flow. */
+ u8 same_flow:1;
+
+- /* Used in udp_gro_receive */
+- u8 udp_mark:1;
++ /* Used in tunnel GRO receive */
++ u8 encap_mark:1;
+
+ /* GRO checksum is valid */
+ u8 csum_valid:1;
+diff --git a/include/net/ip.h b/include/net/ip.h
+index f41fc497b21b..117bde93995d 100644
+--- a/include/net/ip.h
++++ b/include/net/ip.h
+@@ -234,6 +234,8 @@ static inline int inet_is_local_reserved_port(struct net *net, int port)
+ }
+ #endif
+
++__be32 inet_current_timestamp(void);
++
+ /* From inetpeer.c */
+ extern int inet_peer_threshold;
+ extern int inet_peer_minttl;
+diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
+index ac54c27a2bfd..e6796dc8c764 100644
+--- a/include/rdma/ib_addr.h
++++ b/include/rdma/ib_addr.h
+@@ -183,10 +183,12 @@ static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
+
+ dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if);
+ if (dev) {
+- ip4 = (struct in_device *)dev->ip_ptr;
+- if (ip4 && ip4->ifa_list && ip4->ifa_list->ifa_address)
++ ip4 = in_dev_get(dev);
++ if (ip4 && ip4->ifa_list && ip4->ifa_list->ifa_address) {
+ ipv6_addr_set_v4mapped(ip4->ifa_list->ifa_address,
+ (struct in6_addr *)gid);
++ in_dev_put(ip4);
++ }
+ dev_put(dev);
+ }
+ }
+diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
+index 0874e2edd275..79517e5549f1 100644
+--- a/kernel/debug/debug_core.c
++++ b/kernel/debug/debug_core.c
+@@ -598,11 +598,11 @@ return_normal:
+ /*
+ * Wait for the other CPUs to be notified and be waiting for us:
+ */
+- time_left = loops_per_jiffy * HZ;
++ time_left = MSEC_PER_SEC;
+ while (kgdb_do_roundup && --time_left &&
+ (atomic_read(&masters_in_kgdb) + atomic_read(&slaves_in_kgdb)) !=
+ online_cpus)
+- cpu_relax();
++ udelay(1000);
+ if (!time_left)
+ pr_crit("Timed out waiting for secondary CPUs.\n");
+
+diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
+index d9f112bd42a7..d296b904685b 100644
+--- a/kernel/time/timekeeping.c
++++ b/kernel/time/timekeeping.c
+@@ -309,10 +309,10 @@ u32 (*arch_gettimeoffset)(void) = default_arch_gettimeoffset;
+ static inline u32 arch_gettimeoffset(void) { return 0; }
+ #endif
+
+-static inline s64 timekeeping_delta_to_ns(struct tk_read_base *tkr,
++static inline u64 timekeeping_delta_to_ns(struct tk_read_base *tkr,
+ cycle_t delta)
+ {
+- s64 nsec;
++ u64 nsec;
+
+ nsec = delta * tkr->mult + tkr->xtime_nsec;
+ nsec >>= tkr->shift;
+diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
+index a51e79688455..972ce5b596f4 100644
+--- a/kernel/trace/trace_functions_graph.c
++++ b/kernel/trace/trace_functions_graph.c
+@@ -779,6 +779,10 @@ print_graph_entry_leaf(struct trace_iterator *iter,
+
+ cpu_data = per_cpu_ptr(data->cpu_data, cpu);
+
++ /* If a graph tracer ignored set_graph_notrace */
++ if (call->depth < -1)
++ call->depth += FTRACE_NOTRACE_DEPTH;
++
+ /*
+ * Comments display at + 1 to depth. Since
+ * this is a leaf function, keep the comments
+@@ -787,7 +791,8 @@ print_graph_entry_leaf(struct trace_iterator *iter,
+ cpu_data->depth = call->depth - 1;
+
+ /* No need to keep this function around for this depth */
+- if (call->depth < FTRACE_RETFUNC_DEPTH)
++ if (call->depth < FTRACE_RETFUNC_DEPTH &&
++ !WARN_ON_ONCE(call->depth < 0))
+ cpu_data->enter_funcs[call->depth] = 0;
+ }
+
+@@ -816,11 +821,16 @@ print_graph_entry_nested(struct trace_iterator *iter,
+ struct fgraph_cpu_data *cpu_data;
+ int cpu = iter->cpu;
+
++ /* If a graph tracer ignored set_graph_notrace */
++ if (call->depth < -1)
++ call->depth += FTRACE_NOTRACE_DEPTH;
++
+ cpu_data = per_cpu_ptr(data->cpu_data, cpu);
+ cpu_data->depth = call->depth;
+
+ /* Save this function pointer to see if the exit matches */
+- if (call->depth < FTRACE_RETFUNC_DEPTH)
++ if (call->depth < FTRACE_RETFUNC_DEPTH &&
++ !WARN_ON_ONCE(call->depth < 0))
+ cpu_data->enter_funcs[call->depth] = call->func;
+ }
+
+@@ -1048,7 +1058,8 @@ print_graph_return(struct ftrace_graph_ret *trace, struct trace_seq *s,
+ */
+ cpu_data->depth = trace->depth - 1;
+
+- if (trace->depth < FTRACE_RETFUNC_DEPTH) {
++ if (trace->depth < FTRACE_RETFUNC_DEPTH &&
++ !WARN_ON_ONCE(trace->depth < 0)) {
+ if (cpu_data->enter_funcs[trace->depth] != trace->func)
+ func_match = 0;
+ cpu_data->enter_funcs[trace->depth] = 0;
+diff --git a/mm/vmscan.c b/mm/vmscan.c
+index e1a95dbcd5f8..f16e330e1096 100644
+--- a/mm/vmscan.c
++++ b/mm/vmscan.c
+@@ -246,6 +246,7 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl,
+ int nid = shrinkctl->nid;
+ long batch_size = shrinker->batch ? shrinker->batch
+ : SHRINK_BATCH;
++ long scanned = 0, next_deferred;
+
+ freeable = shrinker->count_objects(shrinker, shrinkctl);
+ if (freeable == 0)
+@@ -267,7 +268,9 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl,
+ pr_err("shrink_slab: %pF negative objects to delete nr=%ld\n",
+ shrinker->scan_objects, total_scan);
+ total_scan = freeable;
+- }
++ next_deferred = nr;
++ } else
++ next_deferred = total_scan;
+
+ /*
+ * We need to avoid excessive windup on filesystem shrinkers
+@@ -324,17 +327,22 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl,
+
+ count_vm_events(SLABS_SCANNED, nr_to_scan);
+ total_scan -= nr_to_scan;
++ scanned += nr_to_scan;
+
+ cond_resched();
+ }
+
++ if (next_deferred >= scanned)
++ next_deferred -= scanned;
++ else
++ next_deferred = 0;
+ /*
+ * move the unused scan count back into the shrinker in a
+ * manner that handles concurrent updates. If we exhausted the
+ * scan, there is no need to do an update.
+ */
+- if (total_scan > 0)
+- new_nr = atomic_long_add_return(total_scan,
++ if (next_deferred > 0)
++ new_nr = atomic_long_add_return(next_deferred,
+ &shrinker->nr_deferred[nid]);
+ else
+ new_nr = atomic_long_read(&shrinker->nr_deferred[nid]);
+diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
+index 84201c21705e..940ba74b297c 100644
+--- a/net/ceph/messenger.c
++++ b/net/ceph/messenger.c
+@@ -2029,6 +2029,19 @@ static int process_connect(struct ceph_connection *con)
+
+ dout("process_connect on %p tag %d\n", con, (int)con->in_tag);
+
++ if (con->auth_reply_buf) {
++ /*
++ * Any connection that defines ->get_authorizer()
++ * should also define ->verify_authorizer_reply().
++ * See get_connect_authorizer().
++ */
++ ret = con->ops->verify_authorizer_reply(con, 0);
++ if (ret < 0) {
++ con->error_msg = "bad authorize reply";
++ return ret;
++ }
++ }
++
+ switch (con->in_reply.tag) {
+ case CEPH_MSGR_TAG_FEATURES:
+ pr_err("%s%lld %s feature set mismatch,"
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 56d820fc2707..0f9289ff0f2a 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -4059,8 +4059,8 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
+ NAPI_GRO_CB(skb)->same_flow = 0;
+ NAPI_GRO_CB(skb)->flush = 0;
+ NAPI_GRO_CB(skb)->free = 0;
+- NAPI_GRO_CB(skb)->udp_mark = 0;
+ NAPI_GRO_CB(skb)->recursion_counter = 0;
++ NAPI_GRO_CB(skb)->encap_mark = 0;
+ NAPI_GRO_CB(skb)->gro_remcsum_start = 0;
+
+ /* Setup for GRO checksum validation */
+diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
+index 2095cd6c31fd..84e46837610b 100644
+--- a/net/ipv4/af_inet.c
++++ b/net/ipv4/af_inet.c
+@@ -1388,6 +1388,45 @@ out:
+ return pp;
+ }
+
++static struct sk_buff **ipip_gro_receive(struct sk_buff **head,
++ struct sk_buff *skb)
++{
++ if (NAPI_GRO_CB(skb)->encap_mark) {
++ NAPI_GRO_CB(skb)->flush = 1;
++ return NULL;
++ }
++
++ NAPI_GRO_CB(skb)->encap_mark = 1;
++
++ return inet_gro_receive(head, skb);
++}
++
++#define SECONDS_PER_DAY 86400
++
++/* inet_current_timestamp - Return IP network timestamp
++ *
++ * Return milliseconds since midnight in network byte order.
++ */
++__be32 inet_current_timestamp(void)
++{
++ u32 secs;
++ u32 msecs;
++ struct timespec64 ts;
++
++ ktime_get_real_ts64(&ts);
++
++ /* Get secs since midnight. */
++ (void)div_u64_rem(ts.tv_sec, SECONDS_PER_DAY, &secs);
++ /* Convert to msecs. */
++ msecs = secs * MSEC_PER_SEC;
++ /* Convert nsec to msec. */
++ msecs += (u32)ts.tv_nsec / NSEC_PER_MSEC;
++
++ /* Convert to network byte order. */
++ return htons(msecs);
++}
++EXPORT_SYMBOL(inet_current_timestamp);
++
+ int inet_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
+ {
+ if (sk->sk_family == AF_INET)
+@@ -1430,6 +1469,13 @@ out_unlock:
+ return err;
+ }
+
++static int ipip_gro_complete(struct sk_buff *skb, int nhoff)
++{
++ skb->encapsulation = 1;
++ skb_shinfo(skb)->gso_type |= SKB_GSO_IPIP;
++ return inet_gro_complete(skb, nhoff);
++}
++
+ int inet_ctl_sock_create(struct sock **sk, unsigned short family,
+ unsigned short type, unsigned char protocol,
+ struct net *net)
+@@ -1646,8 +1692,8 @@ static struct packet_offload ip_packet_offload __read_mostly = {
+ static const struct net_offload ipip_offload = {
+ .callbacks = {
+ .gso_segment = inet_gso_segment,
+- .gro_receive = inet_gro_receive,
+- .gro_complete = inet_gro_complete,
++ .gro_receive = ipip_gro_receive,
++ .gro_complete = ipip_gro_complete,
+ },
+ };
+
+diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
+index b22a75c0a3d9..7841b35e5ab0 100644
+--- a/net/ipv4/fou.c
++++ b/net/ipv4/fou.c
+@@ -182,6 +182,14 @@ static struct sk_buff **fou_gro_receive(struct sk_buff **head,
+ u8 proto = NAPI_GRO_CB(skb)->proto;
+ const struct net_offload **offloads;
+
++ /* We can clear the encap_mark for FOU as we are essentially doing
++ * one of two possible things. We are either adding an L4 tunnel
++ * header to the outer L3 tunnel header, or we are are simply
++ * treating the GRE tunnel header as though it is a UDP protocol
++ * specific header such as VXLAN or GENEVE.
++ */
++ NAPI_GRO_CB(skb)->encap_mark = 0;
++
+ rcu_read_lock();
+ offloads = NAPI_GRO_CB(skb)->is_ipv6 ? inet6_offloads : inet_offloads;
+ ops = rcu_dereference(offloads[proto]);
+@@ -349,6 +357,14 @@ static struct sk_buff **gue_gro_receive(struct sk_buff **head,
+ }
+ }
+
++ /* We can clear the encap_mark for GUE as we are essentially doing
++ * one of two possible things. We are either adding an L4 tunnel
++ * header to the outer L3 tunnel header, or we are are simply
++ * treating the GRE tunnel header as though it is a UDP protocol
++ * specific header such as VXLAN or GENEVE.
++ */
++ NAPI_GRO_CB(skb)->encap_mark = 0;
++
+ rcu_read_lock();
+ offloads = NAPI_GRO_CB(skb)->is_ipv6 ? inet6_offloads : inet_offloads;
+ ops = rcu_dereference(offloads[guehdr->proto_ctype]);
+diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
+index 53300b88d569..79ae0d7becbf 100644
+--- a/net/ipv4/gre_offload.c
++++ b/net/ipv4/gre_offload.c
+@@ -128,6 +128,11 @@ static struct sk_buff **gre_gro_receive(struct sk_buff **head,
+ struct packet_offload *ptype;
+ __be16 type;
+
++ if (NAPI_GRO_CB(skb)->encap_mark)
++ goto out;
++
++ NAPI_GRO_CB(skb)->encap_mark = 1;
++
+ off = skb_gro_offset(skb);
+ hlen = off + sizeof(*greh);
+ greh = skb_gro_header_fast(skb, off);
+diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
+index f5203fba6236..2ba975272ff6 100644
+--- a/net/ipv4/icmp.c
++++ b/net/ipv4/icmp.c
+@@ -907,7 +907,6 @@ static bool icmp_echo(struct sk_buff *skb)
+ */
+ static bool icmp_timestamp(struct sk_buff *skb)
+ {
+- struct timespec tv;
+ struct icmp_bxm icmp_param;
+ /*
+ * Too short.
+@@ -918,9 +917,7 @@ static bool icmp_timestamp(struct sk_buff *skb)
+ /*
+ * Fill in the current time as ms since midnight UT:
+ */
+- getnstimeofday(&tv);
+- icmp_param.data.times[1] = htonl((tv.tv_sec % 86400) * MSEC_PER_SEC +
+- tv.tv_nsec / NSEC_PER_MSEC);
++ icmp_param.data.times[1] = inet_current_timestamp();
+ icmp_param.data.times[2] = icmp_param.data.times[1];
+ if (skb_copy_bits(skb, 0, &icmp_param.data.times[0], 4))
+ BUG();
+diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
+index bd246792360b..4d158ff1def1 100644
+--- a/net/ipv4/ip_options.c
++++ b/net/ipv4/ip_options.c
+@@ -58,10 +58,9 @@ void ip_options_build(struct sk_buff *skb, struct ip_options *opt,
+ if (opt->ts_needaddr)
+ ip_rt_get_source(iph+opt->ts+iph[opt->ts+2]-9, skb, rt);
+ if (opt->ts_needtime) {
+- struct timespec tv;
+ __be32 midtime;
+- getnstimeofday(&tv);
+- midtime = htonl((tv.tv_sec % 86400) * MSEC_PER_SEC + tv.tv_nsec / NSEC_PER_MSEC);
++
++ midtime = inet_current_timestamp();
+ memcpy(iph+opt->ts+iph[opt->ts+2]-5, &midtime, 4);
+ }
+ return;
+@@ -415,11 +414,10 @@ int ip_options_compile(struct net *net,
+ break;
+ }
+ if (timeptr) {
+- struct timespec tv;
+- u32 midtime;
+- getnstimeofday(&tv);
+- midtime = (tv.tv_sec % 86400) * MSEC_PER_SEC + tv.tv_nsec / NSEC_PER_MSEC;
+- put_unaligned_be32(midtime, timeptr);
++ __be32 midtime;
++
++ midtime = inet_current_timestamp();
++ memcpy(timeptr, &midtime, 4);
+ opt->is_changed = 1;
+ }
+ } else if ((optptr[3]&0xF) != IPOPT_TS_PRESPEC) {
+diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
+index 2af7b7e1a0f6..dfcab88c3e74 100644
+--- a/net/ipv4/udp_offload.c
++++ b/net/ipv4/udp_offload.c
+@@ -299,14 +299,14 @@ struct sk_buff **udp_gro_receive(struct sk_buff **head, struct sk_buff *skb,
+ unsigned int off = skb_gro_offset(skb);
+ int flush = 1;
+
+- if (NAPI_GRO_CB(skb)->udp_mark ||
++ if (NAPI_GRO_CB(skb)->encap_mark ||
+ (skb->ip_summed != CHECKSUM_PARTIAL &&
+ NAPI_GRO_CB(skb)->csum_cnt == 0 &&
+ !NAPI_GRO_CB(skb)->csum_valid))
+ goto out;
+
+- /* mark that this skb passed once through the udp gro layer */
+- NAPI_GRO_CB(skb)->udp_mark = 1;
++ /* mark that this skb passed once through the tunnel gro layer */
++ NAPI_GRO_CB(skb)->encap_mark = 1;
+
+ rcu_read_lock();
+ uo_priv = rcu_dereference(udp_offload_base);
+diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
+index db0b8428d248..9b01da54d475 100644
+--- a/net/ipv6/ip6_offload.c
++++ b/net/ipv6/ip6_offload.c
+@@ -258,6 +258,19 @@ out:
+ return pp;
+ }
+
++static struct sk_buff **sit_gro_receive(struct sk_buff **head,
++ struct sk_buff *skb)
++{
++ if (NAPI_GRO_CB(skb)->encap_mark) {
++ NAPI_GRO_CB(skb)->flush = 1;
++ return NULL;
++ }
++
++ NAPI_GRO_CB(skb)->encap_mark = 1;
++
++ return ipv6_gro_receive(head, skb);
++}
++
+ static int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
+ {
+ const struct net_offload *ops;
+diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
+index dace13d7638e..b7569238a410 100644
+--- a/net/sunrpc/auth_gss/auth_gss.c
++++ b/net/sunrpc/auth_gss/auth_gss.c
+@@ -539,9 +539,13 @@ gss_setup_upcall(struct gss_auth *gss_auth, struct rpc_cred *cred)
+ return gss_new;
+ gss_msg = gss_add_msg(gss_new);
+ if (gss_msg == gss_new) {
+- int res = rpc_queue_upcall(gss_new->pipe, &gss_new->msg);
++ int res;
++ atomic_inc(&gss_msg->count);
++ res = rpc_queue_upcall(gss_new->pipe, &gss_new->msg);
+ if (res) {
+ gss_unhash_msg(gss_new);
++ atomic_dec(&gss_msg->count);
++ gss_release_msg(gss_new);
+ gss_msg = ERR_PTR(res);
+ }
+ } else
+@@ -834,6 +838,7 @@ gss_pipe_destroy_msg(struct rpc_pipe_msg *msg)
+ warn_gssd();
+ gss_release_msg(gss_msg);
+ }
++ gss_release_msg(gss_msg);
+ }
+
+ static void gss_pipe_dentry_destroy(struct dentry *dir,
+diff --git a/scripts/kconfig/nconf.gui.c b/scripts/kconfig/nconf.gui.c
+index 8275f0e55106..4b2f44c20caf 100644
+--- a/scripts/kconfig/nconf.gui.c
++++ b/scripts/kconfig/nconf.gui.c
+@@ -364,12 +364,14 @@ int dialog_inputbox(WINDOW *main_window,
+ WINDOW *prompt_win;
+ WINDOW *form_win;
+ PANEL *panel;
+- int i, x, y;
++ int i, x, y, lines, columns, win_lines, win_cols;
+ int res = -1;
+ int cursor_position = strlen(init);
+ int cursor_form_win;
+ char *result = *resultp;
+
++ getmaxyx(stdscr, lines, columns);
++
+ if (strlen(init)+1 > *result_len) {
+ *result_len = strlen(init)+1;
+ *resultp = result = realloc(result, *result_len);
+@@ -386,14 +388,19 @@ int dialog_inputbox(WINDOW *main_window,
+ if (title)
+ prompt_width = max(prompt_width, strlen(title));
+
++ win_lines = min(prompt_lines+6, lines-2);
++ win_cols = min(prompt_width+7, columns-2);
++ prompt_lines = max(win_lines-6, 0);
++ prompt_width = max(win_cols-7, 0);
++
+ /* place dialog in middle of screen */
+- y = (getmaxy(stdscr)-(prompt_lines+4))/2;
+- x = (getmaxx(stdscr)-(prompt_width+4))/2;
++ y = (lines-win_lines)/2;
++ x = (columns-win_cols)/2;
+
+ strncpy(result, init, *result_len);
+
+ /* create the windows */
+- win = newwin(prompt_lines+6, prompt_width+7, y, x);
++ win = newwin(win_lines, win_cols, y, x);
+ prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2);
+ form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2);
+ keypad(form_win, TRUE);
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 2a9ec9706db8..b93458698335 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5876,6 +5876,9 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ {0x12, 0x90a60180},
+ {0x14, 0x90170120},
+ {0x21, 0x02211030}),
++ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x1b, 0x01011020},
++ {0x21, 0x02211010}),
+ SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC255_STANDARD_PINS,
+ {0x12, 0x90a60160},
+diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+index 2fbaf2c75d17..5f43e1ced179 100644
+--- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c
++++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+@@ -739,6 +739,9 @@ static int sst_soc_prepare(struct device *dev)
+ struct sst_data *drv = dev_get_drvdata(dev);
+ int i;
+
++ if (!drv->soc_card)
++ return 0;
++
+ /* suspend all pcms first */
+ snd_soc_suspend(drv->soc_card->dev);
+ snd_soc_poweroff(drv->soc_card->dev);
+@@ -761,6 +764,9 @@ static void sst_soc_complete(struct device *dev)
+ struct sst_data *drv = dev_get_drvdata(dev);
+ int i;
+
++ if (!drv->soc_card)
++ return;
++
+ /* restart SSPs */
+ for (i = 0; i < drv->soc_card->num_rtd; i++) {
+ struct snd_soc_dai *dai = drv->soc_card->rtd[i].cpu_dai;
+diff --git a/sound/usb/hiface/pcm.c b/sound/usb/hiface/pcm.c
+index 2c44139b4041..33db205dd12b 100644
+--- a/sound/usb/hiface/pcm.c
++++ b/sound/usb/hiface/pcm.c
+@@ -445,6 +445,8 @@ static int hiface_pcm_prepare(struct snd_pcm_substream *alsa_sub)
+
+ mutex_lock(&rt->stream_mutex);
+
++ hiface_pcm_stream_stop(rt);
++
+ sub->dma_off = 0;
+ sub->period_off = 0;
+
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index e0fc02763024..4a033cbbd361 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -925,9 +925,10 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
+ case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */
+ case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */
+ case USB_ID(0x046d, 0x0991):
++ case USB_ID(0x046d, 0x09a2): /* QuickCam Communicate Deluxe/S7500 */
+ /* Most audio usb devices lie about volume resolution.
+ * Most Logitech webcams have res = 384.
+- * Proboly there is some logitech magic behind this number --fishor
++ * Probably there is some logitech magic behind this number --fishor
+ */
+ if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
+ usb_audio_info(chip,
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2017-01-10 4:02 Alice Ferrazzi
0 siblings, 0 replies; 71+ messages in thread
From: Alice Ferrazzi @ 2017-01-10 4:02 UTC (permalink / raw
To: gentoo-commits
commit: 3f861dc13e810781883d0f1cfe33a821ee3504f8
Author: Alice Ferrazzi <alicef <AT> gentoo <DOT> org>
AuthorDate: Tue Jan 10 04:07:56 2017 +0000
Commit: Alice Ferrazzi <alicef <AT> gentoo <DOT> org>
CommitDate: Tue Jan 10 04:07:56 2017 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=3f861dc1
Linux patch 4.1.37
0000_README | 8 +-
1036_linux-4.1.37.patch | 2732 ++++++++++++++++++++++
1520_fix-race-condition-in-packet-set-ring.patch | 62 -
3 files changed, 2736 insertions(+), 66 deletions(-)
diff --git a/0000_README b/0000_README
index 7e1cb6f..e28d8f1 100644
--- a/0000_README
+++ b/0000_README
@@ -187,6 +187,10 @@ Patch: 1035_linux-4.1.36.patch
From: http://www.kernel.org
Desc: Linux 4.1.36
+Patch: 1036_linux-4.1.37.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.37
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
@@ -195,10 +199,6 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
Desc: Enable link security restrictions by default.
-Patch: 1520_fix-race-condition-in-packet-set-ring.patch
-From: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=84ac7260236a49c79eede91617700174c2c19b0c
-Desc: packet: fix race condition in packet_set_ring. CVE-2016-8655. Bug #601926.
-
Patch: 1800_fix-lru-cache-add-oom-regression.patch
From: http://thread.gmane.org/gmane.linux.kernel.stable/184384
Desc: Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
diff --git a/1036_linux-4.1.37.patch b/1036_linux-4.1.37.patch
new file mode 100644
index 0000000..c9fbe6d
--- /dev/null
+++ b/1036_linux-4.1.37.patch
@@ -0,0 +1,2732 @@
+diff --git a/Documentation/arm/CCN.txt b/Documentation/arm/CCN.txt
+index 0632b3aad83e..715776f06df6 100644
+--- a/Documentation/arm/CCN.txt
++++ b/Documentation/arm/CCN.txt
+@@ -38,7 +38,7 @@ Example of perf tool use:
+ / # perf list | grep ccn
+ ccn/cycles/ [Kernel PMU event]
+ <...>
+- ccn/xp_valid_flit/ [Kernel PMU event]
++ ccn/xp_valid_flit,xp=?,port=?,vc=?,dir=?/ [Kernel PMU event]
+ <...>
+
+ / # perf stat -C 0 -e ccn/cycles/,ccn/xp_valid_flit,xp=1,port=0,vc=1,dir=1/ \
+diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
+index e69274de8d0c..0500895b768f 100644
+--- a/Documentation/filesystems/porting
++++ b/Documentation/filesystems/porting
+@@ -287,8 +287,8 @@ implementing on-disk size changes. Start with a copy of the old inode_setattr
+ and vmtruncate, and the reorder the vmtruncate + foofs_vmtruncate sequence to
+ be in order of zeroing blocks using block_truncate_page or similar helpers,
+ size update and on finally on-disk truncation which should not fail.
+-inode_change_ok now includes the size checks for ATTR_SIZE and must be called
+-in the beginning of ->setattr unconditionally.
++setattr_prepare (which used to be inode_change_ok) now includes the size checks
++for ATTR_SIZE and must be called in the beginning of ->setattr unconditionally.
+
+ [mandatory]
+
+diff --git a/Documentation/sysctl/fs.txt b/Documentation/sysctl/fs.txt
+index 302b5ed616a6..35e17f748ca7 100644
+--- a/Documentation/sysctl/fs.txt
++++ b/Documentation/sysctl/fs.txt
+@@ -265,6 +265,13 @@ aio-nr can grow to.
+
+ ==============================================================
+
++mount-max:
++
++This denotes the maximum number of mounts that may exist
++in a mount namespace.
++
++==============================================================
++
+
+ 2. /proc/sys/fs/binfmt_misc
+ ----------------------------------------------------------
+diff --git a/Makefile b/Makefile
+index aa9fbee620ff..df72b644f78c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 36
++SUBLEVEL = 37
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
+index b52101d37ec7..ee21eecbe0d2 100644
+--- a/arch/arm/include/asm/dma-mapping.h
++++ b/arch/arm/include/asm/dma-mapping.h
+@@ -117,7 +117,7 @@ static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
+ /* The ARM override for dma_max_pfn() */
+ static inline unsigned long dma_max_pfn(struct device *dev)
+ {
+- return PHYS_PFN_OFFSET + dma_to_pfn(dev, *dev->dma_mask);
++ return dma_to_pfn(dev, *dev->dma_mask);
+ }
+ #define dma_max_pfn(dev) dma_max_pfn(dev)
+
+diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
+index cd791948b286..7e459b7ee708 100644
+--- a/arch/x86/include/asm/tlbflush.h
++++ b/arch/x86/include/asm/tlbflush.h
+@@ -32,7 +32,7 @@ DECLARE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate);
+ /* Initialize cr4 shadow for this CPU. */
+ static inline void cr4_init_shadow(void)
+ {
+- this_cpu_write(cpu_tlbstate.cr4, __read_cr4());
++ this_cpu_write(cpu_tlbstate.cr4, __read_cr4_safe());
+ }
+
+ /* Set in this cpu's CR4. */
+diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
+index 2c835e356349..d445c5f1aeb1 100644
+--- a/arch/x86/purgatory/Makefile
++++ b/arch/x86/purgatory/Makefile
+@@ -12,6 +12,7 @@ targets += purgatory.ro
+
+ KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large
+ KBUILD_CFLAGS += -m$(BITS)
++KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
+
+ $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
+ $(call if_changed,ld)
+diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c
+index 27fd0dacad5f..4d523cfe51ce 100644
+--- a/drivers/bus/arm-ccn.c
++++ b/drivers/bus/arm-ccn.c
+@@ -183,6 +183,7 @@ struct arm_ccn {
+ struct arm_ccn_component *xp;
+
+ struct arm_ccn_dt dt;
++ int mn_id;
+ };
+
+
+@@ -322,6 +323,7 @@ struct arm_ccn_pmu_event {
+ static ssize_t arm_ccn_pmu_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+ {
++ struct arm_ccn *ccn = pmu_to_arm_ccn(dev_get_drvdata(dev));
+ struct arm_ccn_pmu_event *event = container_of(attr,
+ struct arm_ccn_pmu_event, attr);
+ ssize_t res;
+@@ -336,6 +338,26 @@ static ssize_t arm_ccn_pmu_event_show(struct device *dev,
+ if (event->mask)
+ res += snprintf(buf + res, PAGE_SIZE - res, ",mask=0x%x",
+ event->mask);
++
++ /* Arguments required by an event */
++ switch (event->type) {
++ case CCN_TYPE_CYCLES:
++ break;
++ case CCN_TYPE_XP:
++ res += snprintf(buf + res, PAGE_SIZE - res,
++ ",xp=?,port=?,vc=?,dir=?");
++ if (event->event == CCN_EVENT_WATCHPOINT)
++ res += snprintf(buf + res, PAGE_SIZE - res,
++ ",cmp_l=?,cmp_h=?,mask=?");
++ break;
++ case CCN_TYPE_MN:
++ res += snprintf(buf + res, PAGE_SIZE - res, ",node=%d", ccn->mn_id);
++ break;
++ default:
++ res += snprintf(buf + res, PAGE_SIZE - res, ",node=?");
++ break;
++ }
++
+ res += snprintf(buf + res, PAGE_SIZE - res, "\n");
+
+ return res;
+@@ -360,9 +382,9 @@ static umode_t arm_ccn_pmu_events_is_visible(struct kobject *kobj,
+ }
+
+ static struct arm_ccn_pmu_event arm_ccn_pmu_events[] = {
+- CCN_EVENT_MN(eobarrier, "dir=0,vc=0,cmp_h=0x1c00", CCN_IDX_MASK_OPCODE),
+- CCN_EVENT_MN(ecbarrier, "dir=0,vc=0,cmp_h=0x1e00", CCN_IDX_MASK_OPCODE),
+- CCN_EVENT_MN(dvmop, "dir=0,vc=0,cmp_h=0x2800", CCN_IDX_MASK_OPCODE),
++ CCN_EVENT_MN(eobarrier, "dir=1,vc=0,cmp_h=0x1c00", CCN_IDX_MASK_OPCODE),
++ CCN_EVENT_MN(ecbarrier, "dir=1,vc=0,cmp_h=0x1e00", CCN_IDX_MASK_OPCODE),
++ CCN_EVENT_MN(dvmop, "dir=1,vc=0,cmp_h=0x2800", CCN_IDX_MASK_OPCODE),
+ CCN_EVENT_HNI(txdatflits, "dir=1,vc=3", CCN_IDX_MASK_ANY),
+ CCN_EVENT_HNI(rxdatflits, "dir=0,vc=3", CCN_IDX_MASK_ANY),
+ CCN_EVENT_HNI(txreqflits, "dir=1,vc=0", CCN_IDX_MASK_ANY),
+@@ -649,6 +671,12 @@ static int arm_ccn_pmu_event_init(struct perf_event *event)
+
+ /* Validate node/xp vs topology */
+ switch (type) {
++ case CCN_TYPE_MN:
++ if (node_xp != ccn->mn_id) {
++ dev_warn(ccn->dev, "Invalid MN ID %d!\n", node_xp);
++ return -EINVAL;
++ }
++ break;
+ case CCN_TYPE_XP:
+ if (node_xp >= ccn->num_xps) {
+ dev_warn(ccn->dev, "Invalid XP ID %d!\n", node_xp);
+@@ -1214,6 +1242,8 @@ static int arm_ccn_init_nodes(struct arm_ccn *ccn, int region,
+
+ switch (type) {
+ case CCN_TYPE_MN:
++ ccn->mn_id = id;
++ return 0;
+ case CCN_TYPE_DT:
+ return 0;
+ case CCN_TYPE_XP:
+diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
+index cd0554f68316..4ff8c334e7c8 100644
+--- a/drivers/gpu/drm/msm/msm_gem_submit.c
++++ b/drivers/gpu/drm/msm/msm_gem_submit.c
+@@ -55,6 +55,14 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev,
+ return submit;
+ }
+
++static inline unsigned long __must_check
++copy_from_user_inatomic(void *to, const void __user *from, unsigned long n)
++{
++ if (access_ok(VERIFY_READ, from, n))
++ return __copy_from_user_inatomic(to, from, n);
++ return -EFAULT;
++}
++
+ static int submit_lookup_objects(struct msm_gem_submit *submit,
+ struct drm_msm_gem_submit *args, struct drm_file *file)
+ {
+@@ -62,6 +70,7 @@ static int submit_lookup_objects(struct msm_gem_submit *submit,
+ int ret = 0;
+
+ spin_lock(&file->table_lock);
++ pagefault_disable();
+
+ for (i = 0; i < args->nr_bos; i++) {
+ struct drm_msm_gem_submit_bo submit_bo;
+@@ -70,10 +79,15 @@ static int submit_lookup_objects(struct msm_gem_submit *submit,
+ void __user *userptr =
+ to_user_ptr(args->bos + (i * sizeof(submit_bo)));
+
+- ret = copy_from_user(&submit_bo, userptr, sizeof(submit_bo));
+- if (ret) {
+- ret = -EFAULT;
+- goto out_unlock;
++ ret = copy_from_user_inatomic(&submit_bo, userptr, sizeof(submit_bo));
++ if (unlikely(ret)) {
++ pagefault_enable();
++ spin_unlock(&file->table_lock);
++ ret = copy_from_user(&submit_bo, userptr, sizeof(submit_bo));
++ if (ret)
++ goto out;
++ spin_lock(&file->table_lock);
++ pagefault_disable();
+ }
+
+ if (submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) {
+@@ -113,9 +127,12 @@ static int submit_lookup_objects(struct msm_gem_submit *submit,
+ }
+
+ out_unlock:
+- submit->nr_bos = i;
++ pagefault_enable();
+ spin_unlock(&file->table_lock);
+
++out:
++ submit->nr_bos = i;
++
+ return ret;
+ }
+
+diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
+index feb6d18de78d..16970fccc5cd 100644
+--- a/drivers/mtd/nand/davinci_nand.c
++++ b/drivers/mtd/nand/davinci_nand.c
+@@ -241,6 +241,9 @@ static void nand_davinci_hwctl_4bit(struct mtd_info *mtd, int mode)
+ unsigned long flags;
+ u32 val;
+
++ /* Reset ECC hardware */
++ davinci_nand_readl(info, NAND_4BIT_ECC1_OFFSET);
++
+ spin_lock_irqsave(&davinci_nand_lock, flags);
+
+ /* Start 4-bit ECC calculation for read/write */
+diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
+index ad535a854e5c..eab132778e67 100644
+--- a/drivers/net/can/dev.c
++++ b/drivers/net/can/dev.c
+@@ -21,6 +21,7 @@
+ #include <linux/slab.h>
+ #include <linux/netdevice.h>
+ #include <linux/if_arp.h>
++#include <linux/workqueue.h>
+ #include <linux/can.h>
+ #include <linux/can/dev.h>
+ #include <linux/can/skb.h>
+@@ -471,9 +472,8 @@ EXPORT_SYMBOL_GPL(can_free_echo_skb);
+ /*
+ * CAN device restart for bus-off recovery
+ */
+-static void can_restart(unsigned long data)
++static void can_restart(struct net_device *dev)
+ {
+- struct net_device *dev = (struct net_device *)data;
+ struct can_priv *priv = netdev_priv(dev);
+ struct net_device_stats *stats = &dev->stats;
+ struct sk_buff *skb;
+@@ -513,6 +513,14 @@ restart:
+ netdev_err(dev, "Error %d during restart", err);
+ }
+
++static void can_restart_work(struct work_struct *work)
++{
++ struct delayed_work *dwork = to_delayed_work(work);
++ struct can_priv *priv = container_of(dwork, struct can_priv, restart_work);
++
++ can_restart(priv->dev);
++}
++
+ int can_restart_now(struct net_device *dev)
+ {
+ struct can_priv *priv = netdev_priv(dev);
+@@ -526,8 +534,8 @@ int can_restart_now(struct net_device *dev)
+ if (priv->state != CAN_STATE_BUS_OFF)
+ return -EBUSY;
+
+- /* Runs as soon as possible in the timer context */
+- mod_timer(&priv->restart_timer, jiffies);
++ cancel_delayed_work_sync(&priv->restart_work);
++ can_restart(dev);
+
+ return 0;
+ }
+@@ -548,8 +556,8 @@ void can_bus_off(struct net_device *dev)
+ netif_carrier_off(dev);
+
+ if (priv->restart_ms)
+- mod_timer(&priv->restart_timer,
+- jiffies + (priv->restart_ms * HZ) / 1000);
++ schedule_delayed_work(&priv->restart_work,
++ msecs_to_jiffies(priv->restart_ms));
+ }
+ EXPORT_SYMBOL_GPL(can_bus_off);
+
+@@ -658,6 +666,7 @@ struct net_device *alloc_candev(int sizeof_priv, unsigned int echo_skb_max)
+ return NULL;
+
+ priv = netdev_priv(dev);
++ priv->dev = dev;
+
+ if (echo_skb_max) {
+ priv->echo_skb_max = echo_skb_max;
+@@ -667,7 +676,7 @@ struct net_device *alloc_candev(int sizeof_priv, unsigned int echo_skb_max)
+
+ priv->state = CAN_STATE_STOPPED;
+
+- init_timer(&priv->restart_timer);
++ INIT_DELAYED_WORK(&priv->restart_work, can_restart_work);
+
+ return dev;
+ }
+@@ -748,8 +757,6 @@ int open_candev(struct net_device *dev)
+ if (!netif_carrier_ok(dev))
+ netif_carrier_on(dev);
+
+- setup_timer(&priv->restart_timer, can_restart, (unsigned long)dev);
+-
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(open_candev);
+@@ -764,7 +771,7 @@ void close_candev(struct net_device *dev)
+ {
+ struct can_priv *priv = netdev_priv(dev);
+
+- del_timer_sync(&priv->restart_timer);
++ cancel_delayed_work_sync(&priv->restart_work);
+ can_flush_echo_skb(dev);
+ }
+ EXPORT_SYMBOL_GPL(close_candev);
+diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
+index 940f78e41993..d9e873c3a273 100644
+--- a/drivers/net/vxlan.c
++++ b/drivers/net/vxlan.c
+@@ -635,7 +635,7 @@ static struct sk_buff **vxlan_gro_receive(struct sk_buff **head,
+ }
+ }
+
+- pp = eth_gro_receive(head, skb);
++ pp = call_gro_receive(eth_gro_receive, head, skb);
+
+ out:
+ skb_gro_remcsum_cleanup(skb, &grc);
+diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
+index 2926295a936d..c9f87cdc85c1 100644
+--- a/drivers/scsi/arcmsr/arcmsr_hba.c
++++ b/drivers/scsi/arcmsr/arcmsr_hba.c
+@@ -2300,7 +2300,8 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
+ }
+ case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
+ unsigned char *ver_addr;
+- int32_t user_len, cnt2end;
++ uint32_t user_len;
++ int32_t cnt2end;
+ uint8_t *pQbuffer, *ptmpuserbuffer;
+ ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
+ if (!ver_addr) {
+@@ -2309,6 +2310,11 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
+ }
+ ptmpuserbuffer = ver_addr;
+ user_len = pcmdmessagefld->cmdmessage.Length;
++ if (user_len > ARCMSR_API_DATA_BUFLEN) {
++ retvalue = ARCMSR_MESSAGE_FAIL;
++ kfree(ver_addr);
++ goto message_out;
++ }
+ memcpy(ptmpuserbuffer,
+ pcmdmessagefld->messagedatabuffer, user_len);
+ spin_lock_irqsave(&acb->wqbuffer_lock, flags);
+diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
+index 14e5c7cea929..1fcd31c6b37b 100644
+--- a/drivers/scsi/megaraid/megaraid_sas.h
++++ b/drivers/scsi/megaraid/megaraid_sas.h
+@@ -1862,7 +1862,7 @@ struct megasas_instance_template {
+ };
+
+ #define MEGASAS_IS_LOGICAL(scp) \
+- (scp->device->channel < MEGASAS_MAX_PD_CHANNELS) ? 0 : 1
++ ((scp->device->channel < MEGASAS_MAX_PD_CHANNELS) ? 0 : 1)
+
+ #define MEGASAS_DEV_INDEX(inst, scp) \
+ ((scp->device->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + \
+diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
+index a27af7882170..d60425996948 100644
+--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
++++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
+@@ -1323,7 +1323,7 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
+ attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
+ }
+
+- /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
++ /* POSIX: check before ATTR_*TIME_SET set (from setattr_prepare) */
+ if (attr->ia_valid & TIMES_SET_FLAGS) {
+ if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
+ !capable(CFS_CAP_FOWNER))
+diff --git a/fs/9p/acl.c b/fs/9p/acl.c
+index 31c010372660..de59b4892bfb 100644
+--- a/fs/9p/acl.c
++++ b/fs/9p/acl.c
+@@ -320,32 +320,26 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
+ case ACL_TYPE_ACCESS:
+ name = POSIX_ACL_XATTR_ACCESS;
+ if (acl) {
+- umode_t mode = inode->i_mode;
+- retval = posix_acl_equiv_mode(acl, &mode);
+- if (retval < 0)
++ struct iattr iattr;
++
++ retval = posix_acl_update_mode(inode, &iattr.ia_mode, &acl);
++ if (retval)
+ goto err_out;
+- else {
+- struct iattr iattr;
+- if (retval == 0) {
+- /*
+- * ACL can be represented
+- * by the mode bits. So don't
+- * update ACL.
+- */
+- acl = NULL;
+- value = NULL;
+- size = 0;
+- }
+- /* Updte the mode bits */
+- iattr.ia_mode = ((mode & S_IALLUGO) |
+- (inode->i_mode & ~S_IALLUGO));
+- iattr.ia_valid = ATTR_MODE;
+- /* FIXME should we update ctime ?
+- * What is the following setxattr update the
+- * mode ?
++ if (!acl) {
++ /*
++ * ACL can be represented
++ * by the mode bits. So don't
++ * update ACL.
+ */
+- v9fs_vfs_setattr_dotl(dentry, &iattr);
++ value = NULL;
++ size = 0;
+ }
++ iattr.ia_valid = ATTR_MODE;
++ /* FIXME should we update ctime ?
++ * What is the following setxattr update the
++ * mode ?
++ */
++ v9fs_vfs_setattr_dotl(dentry, &iattr);
+ }
+ break;
+ case ACL_TYPE_DEFAULT:
+diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
+index 53f1e8a21707..99c3c4ffe1d9 100644
+--- a/fs/9p/vfs_inode.c
++++ b/fs/9p/vfs_inode.c
+@@ -1094,7 +1094,7 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
+ struct p9_wstat wstat;
+
+ p9_debug(P9_DEBUG_VFS, "\n");
+- retval = inode_change_ok(d_inode(dentry), iattr);
++ retval = setattr_prepare(dentry, iattr);
+ if (retval)
+ return retval;
+
+diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
+index 4d3ecfb55fcf..ce7ab92f7e84 100644
+--- a/fs/9p/vfs_inode_dotl.c
++++ b/fs/9p/vfs_inode_dotl.c
+@@ -560,7 +560,7 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
+
+ p9_debug(P9_DEBUG_VFS, "\n");
+
+- retval = inode_change_ok(inode, iattr);
++ retval = setattr_prepare(dentry, iattr);
+ if (retval)
+ return retval;
+
+diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c
+index 335055d828e4..f57baaa511aa 100644
+--- a/fs/adfs/inode.c
++++ b/fs/adfs/inode.c
+@@ -303,7 +303,7 @@ adfs_notify_change(struct dentry *dentry, struct iattr *attr)
+ unsigned int ia_valid = attr->ia_valid;
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+
+ /*
+ * we can't change the UID or GID of any file -
+diff --git a/fs/affs/inode.c b/fs/affs/inode.c
+index a022f4accd76..87953b94a5ae 100644
+--- a/fs/affs/inode.c
++++ b/fs/affs/inode.c
+@@ -218,7 +218,7 @@ affs_notify_change(struct dentry *dentry, struct iattr *attr)
+
+ pr_debug("notify_change(%lu,0x%x)\n", inode->i_ino, attr->ia_valid);
+
+- error = inode_change_ok(inode,attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ goto out;
+
+diff --git a/fs/attr.c b/fs/attr.c
+index 6530ced19697..ee697ddc6c2e 100644
+--- a/fs/attr.c
++++ b/fs/attr.c
+@@ -17,19 +17,22 @@
+ #include <linux/ima.h>
+
+ /**
+- * inode_change_ok - check if attribute changes to an inode are allowed
+- * @inode: inode to check
++ * setattr_prepare - check if attribute changes to a dentry are allowed
++ * @dentry: dentry to check
+ * @attr: attributes to change
+ *
+ * Check if we are allowed to change the attributes contained in @attr
+- * in the given inode. This includes the normal unix access permission
+- * checks, as well as checks for rlimits and others.
++ * in the given dentry. This includes the normal unix access permission
++ * checks, as well as checks for rlimits and others. The function also clears
++ * SGID bit from mode if user is not allowed to set it. Also file capabilities
++ * and IMA extended attributes are cleared if ATTR_KILL_PRIV is set.
+ *
+ * Should be called as the first thing in ->setattr implementations,
+ * possibly after taking additional locks.
+ */
+-int inode_change_ok(const struct inode *inode, struct iattr *attr)
++int setattr_prepare(struct dentry *dentry, struct iattr *attr)
+ {
++ struct inode *inode = d_inode(dentry);
+ unsigned int ia_valid = attr->ia_valid;
+
+ /*
+@@ -44,7 +47,7 @@ int inode_change_ok(const struct inode *inode, struct iattr *attr)
+
+ /* If force is set do it anyway. */
+ if (ia_valid & ATTR_FORCE)
+- return 0;
++ goto kill_priv;
+
+ /* Make sure a caller can chown. */
+ if ((ia_valid & ATTR_UID) &&
+@@ -77,9 +80,19 @@ int inode_change_ok(const struct inode *inode, struct iattr *attr)
+ return -EPERM;
+ }
+
++kill_priv:
++ /* User has permission for the change */
++ if (ia_valid & ATTR_KILL_PRIV) {
++ int error;
++
++ error = security_inode_killpriv(dentry);
++ if (error)
++ return error;
++ }
++
+ return 0;
+ }
+-EXPORT_SYMBOL(inode_change_ok);
++EXPORT_SYMBOL(setattr_prepare);
+
+ /**
+ * inode_newsize_ok - may this inode be truncated to a given size
+@@ -217,13 +230,11 @@ int notify_change(struct dentry * dentry, struct iattr * attr, struct inode **de
+ if (!(ia_valid & ATTR_MTIME_SET))
+ attr->ia_mtime = now;
+ if (ia_valid & ATTR_KILL_PRIV) {
+- attr->ia_valid &= ~ATTR_KILL_PRIV;
+- ia_valid &= ~ATTR_KILL_PRIV;
+ error = security_inode_need_killpriv(dentry);
+- if (error > 0)
+- error = security_inode_killpriv(dentry);
+- if (error)
++ if (error < 0)
+ return error;
++ if (error == 0)
++ ia_valid = attr->ia_valid &= ~ATTR_KILL_PRIV;
+ }
+
+ /*
+diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
+index 9a0124a95851..fb3e64d37cb4 100644
+--- a/fs/btrfs/acl.c
++++ b/fs/btrfs/acl.c
+@@ -83,11 +83,9 @@ static int __btrfs_set_acl(struct btrfs_trans_handle *trans,
+ case ACL_TYPE_ACCESS:
+ name = POSIX_ACL_XATTR_ACCESS;
+ if (acl) {
+- ret = posix_acl_equiv_mode(acl, &inode->i_mode);
+- if (ret < 0)
++ ret = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (ret)
+ return ret;
+- if (ret == 0)
+- acl = NULL;
+ }
+ ret = 0;
+ break;
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index c4771af7fd6f..757a34bdd2b9 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -4975,7 +4975,7 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr)
+ if (btrfs_root_readonly(root))
+ return -EROFS;
+
+- err = inode_change_ok(inode, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err)
+ return err;
+
+diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c
+index 64fa248343f6..d7496e3dbfc4 100644
+--- a/fs/ceph/acl.c
++++ b/fs/ceph/acl.c
+@@ -94,11 +94,9 @@ int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ case ACL_TYPE_ACCESS:
+ name = POSIX_ACL_XATTR_ACCESS;
+ if (acl) {
+- ret = posix_acl_equiv_mode(acl, &new_mode);
+- if (ret < 0)
++ ret = posix_acl_update_mode(inode, &new_mode, &acl);
++ if (ret)
+ goto out;
+- if (ret == 0)
+- acl = NULL;
+ }
+ break;
+ case ACL_TYPE_DEFAULT:
+diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
+index e876e1944519..4484aaf5c478 100644
+--- a/fs/ceph/inode.c
++++ b/fs/ceph/inode.c
+@@ -1728,7 +1728,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
+ if (ceph_snap(inode) != CEPH_NOSNAP)
+ return -EROFS;
+
+- err = inode_change_ok(inode, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err != 0)
+ return err;
+
+diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
+index 9fb3bc26a2ab..f82dfe7ae3e8 100644
+--- a/fs/cifs/inode.c
++++ b/fs/cifs/inode.c
+@@ -2134,7 +2134,7 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
+ attrs->ia_valid |= ATTR_FORCE;
+
+- rc = inode_change_ok(inode, attrs);
++ rc = setattr_prepare(direntry, attrs);
+ if (rc < 0)
+ goto out;
+
+@@ -2274,7 +2274,7 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
+ attrs->ia_valid |= ATTR_FORCE;
+
+- rc = inode_change_ok(inode, attrs);
++ rc = setattr_prepare(direntry, attrs);
+ if (rc < 0) {
+ free_xid(xid);
+ return rc;
+diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
+index fc850b55db67..661dd53f0040 100644
+--- a/fs/ecryptfs/inode.c
++++ b/fs/ecryptfs/inode.c
+@@ -942,7 +942,7 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
+ }
+ mutex_unlock(&crypt_stat->cs_mutex);
+
+- rc = inode_change_ok(inode, ia);
++ rc = setattr_prepare(dentry, ia);
+ if (rc)
+ goto out;
+ if (ia->ia_valid & ATTR_SIZE) {
+diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
+index 786e4cc8c889..159c30c18395 100644
+--- a/fs/exofs/inode.c
++++ b/fs/exofs/inode.c
+@@ -1038,7 +1038,7 @@ int exofs_setattr(struct dentry *dentry, struct iattr *iattr)
+ if (unlikely(error))
+ return error;
+
+- error = inode_change_ok(inode, iattr);
++ error = setattr_prepare(dentry, iattr);
+ if (unlikely(error))
+ return error;
+
+diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
+index 27695e6f4e46..d6aeb84e90b6 100644
+--- a/fs/ext2/acl.c
++++ b/fs/ext2/acl.c
+@@ -193,15 +193,11 @@ ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ case ACL_TYPE_ACCESS:
+ name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS;
+ if (acl) {
+- error = posix_acl_equiv_mode(acl, &inode->i_mode);
+- if (error < 0)
++ error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (error)
+ return error;
+- else {
+- inode->i_ctime = CURRENT_TIME_SEC;
+- mark_inode_dirty(inode);
+- if (error == 0)
+- acl = NULL;
+- }
++ inode->i_ctime = CURRENT_TIME_SEC;
++ mark_inode_dirty(inode);
+ }
+ break;
+
+diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
+index f460ae36d5b7..f08604366cb5 100644
+--- a/fs/ext2/inode.c
++++ b/fs/ext2/inode.c
+@@ -1547,7 +1547,7 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
+ struct inode *inode = d_inode(dentry);
+ int error;
+
+- error = inode_change_ok(inode, iattr);
++ error = setattr_prepare(dentry, iattr);
+ if (error)
+ return error;
+
+diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
+index 2ee2dc4351d1..3613e87c688f 100644
+--- a/fs/ext3/inode.c
++++ b/fs/ext3/inode.c
+@@ -3244,7 +3244,7 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
+ int error, rc = 0;
+ const unsigned int ia_valid = attr->ia_valid;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
+index 69b1e73026a5..c3fe1e323951 100644
+--- a/fs/ext4/acl.c
++++ b/fs/ext4/acl.c
+@@ -196,15 +196,11 @@ __ext4_set_acl(handle_t *handle, struct inode *inode, int type,
+ case ACL_TYPE_ACCESS:
+ name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
+ if (acl) {
+- error = posix_acl_equiv_mode(acl, &inode->i_mode);
+- if (error < 0)
++ error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (error)
+ return error;
+- else {
+- inode->i_ctime = ext4_current_time(inode);
+- ext4_mark_inode_dirty(handle, inode);
+- if (error == 0)
+- acl = NULL;
+- }
++ inode->i_ctime = ext4_current_time(inode);
++ ext4_mark_inode_dirty(handle, inode);
+ }
+ break;
+
+diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
+index 15213a567301..145d6ba4117d 100644
+--- a/fs/ext4/ext4.h
++++ b/fs/ext4/ext4.h
+@@ -1008,6 +1008,7 @@ struct ext4_inode_info {
+ /*
+ * Mount flags set via mount options or defaults
+ */
++#define EXT4_MOUNT_NO_MBCACHE 0x00001 /* Disable mbcache */
+ #define EXT4_MOUNT_GRPID 0x00004 /* Create files with directory's group */
+ #define EXT4_MOUNT_DEBUG 0x00008 /* Some debugging messages */
+ #define EXT4_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index 9b55c6f71bf2..5beca5c5413e 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -4751,7 +4751,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
+ int orphan = 0;
+ const unsigned int ia_valid = attr->ia_valid;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index afb3eb3e8b0f..4723d8b02747 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -1144,6 +1144,7 @@ enum {
+ Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
+ Opt_inode_readahead_blks, Opt_journal_ioprio,
+ Opt_dioread_nolock, Opt_dioread_lock,
++ Opt_no_mbcache,
+ Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
+ Opt_max_dir_size_kb, Opt_nojournal_checksum,
+ };
+@@ -1222,6 +1223,7 @@ static const match_table_t tokens = {
+ {Opt_discard, "discard"},
+ {Opt_nodiscard, "nodiscard"},
+ {Opt_init_itable, "init_itable=%u"},
++ {Opt_no_mbcache, "no_mbcache"},
+ {Opt_init_itable, "init_itable"},
+ {Opt_noinit_itable, "noinit_itable"},
+ {Opt_max_dir_size_kb, "max_dir_size_kb=%u"},
+@@ -1385,6 +1387,7 @@ static const struct mount_opts {
+ {Opt_noauto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_SET},
+ {Opt_auto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_CLEAR},
+ {Opt_noinit_itable, EXT4_MOUNT_INIT_INODE_TABLE, MOPT_CLEAR},
++ {Opt_no_mbcache, EXT4_MOUNT_NO_MBCACHE, MOPT_SET},
+ {Opt_commit, 0, MOPT_GTE0},
+ {Opt_max_batch_time, 0, MOPT_GTE0},
+ {Opt_min_batch_time, 0, MOPT_GTE0},
+diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
+index 16e28c08d1e8..cdc26e54400f 100644
+--- a/fs/ext4/xattr.c
++++ b/fs/ext4/xattr.c
+@@ -80,7 +80,7 @@
+ # define ea_bdebug(bh, fmt, ...) no_printk(fmt, ##__VA_ARGS__)
+ #endif
+
+-static void ext4_xattr_cache_insert(struct mb_cache *, struct buffer_head *);
++static void ext4_xattr_cache_insert(struct inode *, struct buffer_head *);
+ static struct buffer_head *ext4_xattr_cache_find(struct inode *,
+ struct ext4_xattr_header *,
+ struct mb_cache_entry **);
+@@ -278,7 +278,6 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
+ struct ext4_xattr_entry *entry;
+ size_t size;
+ int error;
+- struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+
+ ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
+ name_index, name, buffer, (long)buffer_size);
+@@ -300,7 +299,7 @@ bad_block:
+ error = -EIO;
+ goto cleanup;
+ }
+- ext4_xattr_cache_insert(ext4_mb_cache, bh);
++ ext4_xattr_cache_insert(inode, bh);
+ entry = BFIRST(bh);
+ error = ext4_xattr_find_entry(&entry, name_index, name, bh->b_size, 1);
+ if (error == -EIO)
+@@ -426,7 +425,6 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
+ struct inode *inode = d_inode(dentry);
+ struct buffer_head *bh = NULL;
+ int error;
+- struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+
+ ea_idebug(inode, "buffer=%p, buffer_size=%ld",
+ buffer, (long)buffer_size);
+@@ -448,7 +446,7 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
+ error = -EIO;
+ goto cleanup;
+ }
+- ext4_xattr_cache_insert(ext4_mb_cache, bh);
++ ext4_xattr_cache_insert(inode, bh);
+ error = ext4_xattr_list_entries(dentry, BFIRST(bh), buffer, buffer_size);
+
+ cleanup:
+@@ -547,7 +545,8 @@ ext4_xattr_release_block(handle_t *handle, struct inode *inode,
+ int error = 0;
+ struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+
+- ce = mb_cache_entry_get(ext4_mb_cache, bh->b_bdev, bh->b_blocknr);
++ if (!test_opt(inode->i_sb, NO_MBCACHE))
++ ce = mb_cache_entry_get(ext4_mb_cache, bh->b_bdev, bh->b_blocknr);
+ BUFFER_TRACE(bh, "get_write_access");
+ error = ext4_journal_get_write_access(handle, bh);
+ if (error)
+@@ -788,8 +787,9 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
+ if (i->value && i->value_len > sb->s_blocksize)
+ return -ENOSPC;
+ if (s->base) {
+- ce = mb_cache_entry_get(ext4_mb_cache, bs->bh->b_bdev,
+- bs->bh->b_blocknr);
++ if (!test_opt(inode->i_sb, NO_MBCACHE))
++ ce = mb_cache_entry_get(ext4_mb_cache, bs->bh->b_bdev,
++ bs->bh->b_blocknr);
+ BUFFER_TRACE(bs->bh, "get_write_access");
+ error = ext4_journal_get_write_access(handle, bs->bh);
+ if (error)
+@@ -807,7 +807,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
+ if (!IS_LAST_ENTRY(s->first))
+ ext4_xattr_rehash(header(s->base),
+ s->here);
+- ext4_xattr_cache_insert(ext4_mb_cache,
++ ext4_xattr_cache_insert(inode,
+ bs->bh);
+ }
+ unlock_buffer(bs->bh);
+@@ -892,7 +892,8 @@ inserted:
+ if (error)
+ goto cleanup_dquot;
+ }
+- mb_cache_entry_release(ce);
++ if (ce)
++ mb_cache_entry_release(ce);
+ ce = NULL;
+ } else if (bs->bh && s->base == bs->bh->b_data) {
+ /* We were modifying this block in-place. */
+@@ -939,7 +940,7 @@ getblk_failed:
+ memcpy(new_bh->b_data, s->base, new_bh->b_size);
+ set_buffer_uptodate(new_bh);
+ unlock_buffer(new_bh);
+- ext4_xattr_cache_insert(ext4_mb_cache, new_bh);
++ ext4_xattr_cache_insert(inode, new_bh);
+ error = ext4_handle_dirty_xattr_block(handle,
+ inode, new_bh);
+ if (error)
+@@ -1529,12 +1530,17 @@ ext4_xattr_put_super(struct super_block *sb)
+ * Returns 0, or a negative error number on failure.
+ */
+ static void
+-ext4_xattr_cache_insert(struct mb_cache *ext4_mb_cache, struct buffer_head *bh)
++ext4_xattr_cache_insert(struct inode *inode, struct buffer_head *bh)
+ {
++ struct super_block *sb = inode->i_sb;
++ struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+ __u32 hash = le32_to_cpu(BHDR(bh)->h_hash);
+ struct mb_cache_entry *ce;
+ int error;
+
++ if (test_opt(sb, NO_MBCACHE))
++ return;
++
+ ce = mb_cache_entry_alloc(ext4_mb_cache, GFP_NOFS);
+ if (!ce) {
+ ea_bdebug(bh, "out of memory");
+@@ -1609,6 +1615,8 @@ ext4_xattr_cache_find(struct inode *inode, struct ext4_xattr_header *header,
+ struct mb_cache_entry *ce;
+ struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+
++ if (test_opt(inode->i_sb, NO_MBCACHE))
++ return NULL;
+ if (!header->h_hash)
+ return NULL; /* never share */
+ ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
+diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c
+index 4320ffab3495..c5e4a1856a0f 100644
+--- a/fs/f2fs/acl.c
++++ b/fs/f2fs/acl.c
+@@ -214,12 +214,10 @@ static int __f2fs_set_acl(struct inode *inode, int type,
+ case ACL_TYPE_ACCESS:
+ name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS;
+ if (acl) {
+- error = posix_acl_equiv_mode(acl, &inode->i_mode);
+- if (error < 0)
++ error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (error)
+ return error;
+ set_acl_inode(fi, inode->i_mode);
+- if (error == 0)
+- acl = NULL;
+ }
+ break;
+
+diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
+index 2b52e48d7482..85e40c0fdcc4 100644
+--- a/fs/f2fs/file.c
++++ b/fs/f2fs/file.c
+@@ -617,7 +617,7 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
+ struct f2fs_inode_info *fi = F2FS_I(inode);
+ int err;
+
+- err = inode_change_ok(inode, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err)
+ return err;
+
+diff --git a/fs/fat/file.c b/fs/fat/file.c
+index 442d50a0e33e..5d37650483c6 100644
+--- a/fs/fat/file.c
++++ b/fs/fat/file.c
+@@ -388,7 +388,7 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
+ attr->ia_valid &= ~TIMES_SET_FLAGS;
+ }
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ attr->ia_valid = ia_valid;
+ if (error) {
+ if (sbi->options.quiet)
+diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
+index 0572bca49f15..88b09a33d117 100644
+--- a/fs/fuse/dir.c
++++ b/fs/fuse/dir.c
+@@ -1602,9 +1602,10 @@ int fuse_flush_times(struct inode *inode, struct fuse_file *ff)
+ * vmtruncate() doesn't allow for this case, so do the rlimit checking
+ * and the actual truncation by hand.
+ */
+-int fuse_do_setattr(struct inode *inode, struct iattr *attr,
++int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
+ struct file *file)
+ {
++ struct inode *inode = d_inode(dentry);
+ struct fuse_conn *fc = get_fuse_conn(inode);
+ struct fuse_inode *fi = get_fuse_inode(inode);
+ FUSE_ARGS(args);
+@@ -1619,7 +1620,7 @@ int fuse_do_setattr(struct inode *inode, struct iattr *attr,
+ if (!(fc->flags & FUSE_DEFAULT_PERMISSIONS))
+ attr->ia_valid |= ATTR_FORCE;
+
+- err = inode_change_ok(inode, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err)
+ return err;
+
+@@ -1718,9 +1719,9 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
+ return -EACCES;
+
+ if (attr->ia_valid & ATTR_FILE)
+- return fuse_do_setattr(inode, attr, attr->ia_file);
++ return fuse_do_setattr(entry, attr, attr->ia_file);
+ else
+- return fuse_do_setattr(inode, attr, NULL);
++ return fuse_do_setattr(entry, attr, NULL);
+ }
+
+ static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry,
+diff --git a/fs/fuse/file.c b/fs/fuse/file.c
+index d8f29ef2d819..1f03f0a36e35 100644
+--- a/fs/fuse/file.c
++++ b/fs/fuse/file.c
+@@ -2797,7 +2797,7 @@ static void fuse_do_truncate(struct file *file)
+ attr.ia_file = file;
+ attr.ia_valid |= ATTR_FILE;
+
+- fuse_do_setattr(inode, &attr, file);
++ fuse_do_setattr(file->f_path.dentry, &attr, file);
+ }
+
+ static inline loff_t fuse_round_up(loff_t off)
+diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
+index 85f9d8273455..30d2bde45f68 100644
+--- a/fs/fuse/fuse_i.h
++++ b/fs/fuse/fuse_i.h
+@@ -913,7 +913,7 @@ bool fuse_write_update_size(struct inode *inode, loff_t pos);
+ int fuse_flush_times(struct inode *inode, struct fuse_file *ff);
+ int fuse_write_inode(struct inode *inode, struct writeback_control *wbc);
+
+-int fuse_do_setattr(struct inode *inode, struct iattr *attr,
++int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
+ struct file *file);
+
+ void fuse_set_initialized(struct fuse_conn *fc);
+diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c
+index 1be3b061c05c..ff0ac96a8e7b 100644
+--- a/fs/gfs2/acl.c
++++ b/fs/gfs2/acl.c
+@@ -79,17 +79,11 @@ int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ if (type == ACL_TYPE_ACCESS) {
+ umode_t mode = inode->i_mode;
+
+- error = posix_acl_equiv_mode(acl, &mode);
+- if (error < 0)
++ error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (error)
+ return error;
+-
+- if (error == 0)
+- acl = NULL;
+-
+- if (mode != inode->i_mode) {
+- inode->i_mode = mode;
++ if (mode != inode->i_mode)
+ mark_inode_dirty(inode);
+- }
+ }
+
+ if (acl) {
+diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
+index 1b3ca7a2e3fc..6f7f848a3c4e 100644
+--- a/fs/gfs2/inode.c
++++ b/fs/gfs2/inode.c
+@@ -1759,7 +1759,7 @@ static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+ goto out;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ goto out;
+
+diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
+index b99ebddb10cb..6409b8b4afd4 100644
+--- a/fs/hfs/inode.c
++++ b/fs/hfs/inode.c
+@@ -604,7 +604,7 @@ int hfs_inode_setattr(struct dentry *dentry, struct iattr * attr)
+ struct hfs_sb_info *hsb = HFS_SB(inode->i_sb);
+ int error;
+
+- error = inode_change_ok(inode, attr); /* basic permission checks */
++ error = setattr_prepare(dentry, attr); /* basic permission checks */
+ if (error)
+ return error;
+
+diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
+index 6dd107d7421e..d87c8a27e063 100644
+--- a/fs/hfsplus/inode.c
++++ b/fs/hfsplus/inode.c
+@@ -246,7 +246,7 @@ static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
+ struct inode *inode = d_inode(dentry);
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/hfsplus/posix_acl.c b/fs/hfsplus/posix_acl.c
+index df0c9af68d05..71b3087b7e32 100644
+--- a/fs/hfsplus/posix_acl.c
++++ b/fs/hfsplus/posix_acl.c
+@@ -68,8 +68,8 @@ int hfsplus_set_posix_acl(struct inode *inode, struct posix_acl *acl,
+ case ACL_TYPE_ACCESS:
+ xattr_name = POSIX_ACL_XATTR_ACCESS;
+ if (acl) {
+- err = posix_acl_equiv_mode(acl, &inode->i_mode);
+- if (err < 0)
++ err = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (err)
+ return err;
+ }
+ err = 0;
+diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
+index f895a85d9304..81ce4e4ad0f9 100644
+--- a/fs/hostfs/hostfs_kern.c
++++ b/fs/hostfs/hostfs_kern.c
+@@ -812,7 +812,7 @@ static int hostfs_setattr(struct dentry *dentry, struct iattr *attr)
+
+ int fd = HOSTFS_I(inode)->fd;
+
+- err = inode_change_ok(inode, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err)
+ return err;
+
+diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c
+index 933c73780813..efbed9520fdc 100644
+--- a/fs/hpfs/inode.c
++++ b/fs/hpfs/inode.c
+@@ -272,7 +272,7 @@ int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
+ if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
+ goto out_unlock;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ goto out_unlock;
+
+diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
+index 87724c1d7be6..a533d8c66489 100644
+--- a/fs/hugetlbfs/inode.c
++++ b/fs/hugetlbfs/inode.c
+@@ -400,7 +400,7 @@ static int hugetlbfs_setattr(struct dentry *dentry, struct iattr *attr)
+
+ BUG_ON(!inode);
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
+index 2f7a3c090489..f9f86f87d32b 100644
+--- a/fs/jffs2/acl.c
++++ b/fs/jffs2/acl.c
+@@ -235,9 +235,10 @@ int jffs2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ case ACL_TYPE_ACCESS:
+ xprefix = JFFS2_XPREFIX_ACL_ACCESS;
+ if (acl) {
+- umode_t mode = inode->i_mode;
+- rc = posix_acl_equiv_mode(acl, &mode);
+- if (rc < 0)
++ umode_t mode;
++
++ rc = posix_acl_update_mode(inode, &mode, &acl);
++ if (rc)
+ return rc;
+ if (inode->i_mode != mode) {
+ struct iattr attr;
+@@ -249,8 +250,6 @@ int jffs2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ if (rc < 0)
+ return rc;
+ }
+- if (rc == 0)
+- acl = NULL;
+ }
+ break;
+ case ACL_TYPE_DEFAULT:
+diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
+index fe5ea080b4ec..6273abad377f 100644
+--- a/fs/jffs2/fs.c
++++ b/fs/jffs2/fs.c
+@@ -193,7 +193,7 @@ int jffs2_setattr(struct dentry *dentry, struct iattr *iattr)
+ struct inode *inode = d_inode(dentry);
+ int rc;
+
+- rc = inode_change_ok(inode, iattr);
++ rc = setattr_prepare(dentry, iattr);
+ if (rc)
+ return rc;
+
+diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
+index 0c8ca830b113..9fad9f4fe883 100644
+--- a/fs/jfs/acl.c
++++ b/fs/jfs/acl.c
+@@ -84,13 +84,11 @@ static int __jfs_set_acl(tid_t tid, struct inode *inode, int type,
+ case ACL_TYPE_ACCESS:
+ ea_name = POSIX_ACL_XATTR_ACCESS;
+ if (acl) {
+- rc = posix_acl_equiv_mode(acl, &inode->i_mode);
+- if (rc < 0)
++ rc = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (rc)
+ return rc;
+ inode->i_ctime = CURRENT_TIME;
+ mark_inode_dirty(inode);
+- if (rc == 0)
+- acl = NULL;
+ }
+ break;
+ case ACL_TYPE_DEFAULT:
+diff --git a/fs/jfs/file.c b/fs/jfs/file.c
+index e98d39d75cf4..66d6362a9007 100644
+--- a/fs/jfs/file.c
++++ b/fs/jfs/file.c
+@@ -103,7 +103,7 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
+ struct inode *inode = d_inode(dentry);
+ int rc;
+
+- rc = inode_change_ok(inode, iattr);
++ rc = setattr_prepare(dentry, iattr);
+ if (rc)
+ return rc;
+
+diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
+index 756dd56aaf60..a17c850a4958 100644
+--- a/fs/kernfs/inode.c
++++ b/fs/kernfs/inode.c
+@@ -119,7 +119,7 @@ int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr)
+ return -EINVAL;
+
+ mutex_lock(&kernfs_mutex);
+- error = inode_change_ok(inode, iattr);
++ error = setattr_prepare(dentry, iattr);
+ if (error)
+ goto out;
+
+diff --git a/fs/libfs.c b/fs/libfs.c
+index f4641fd27bda..50edbdc23cef 100644
+--- a/fs/libfs.c
++++ b/fs/libfs.c
+@@ -371,7 +371,7 @@ int simple_setattr(struct dentry *dentry, struct iattr *iattr)
+ struct inode *inode = d_inode(dentry);
+ int error;
+
+- error = inode_change_ok(inode, iattr);
++ error = setattr_prepare(dentry, iattr);
+ if (error)
+ return error;
+
+diff --git a/fs/logfs/file.c b/fs/logfs/file.c
+index 1a6f0167b16a..3abe1414c3f4 100644
+--- a/fs/logfs/file.c
++++ b/fs/logfs/file.c
+@@ -244,7 +244,7 @@ static int logfs_setattr(struct dentry *dentry, struct iattr *attr)
+ struct inode *inode = d_inode(dentry);
+ int err = 0;
+
+- err = inode_change_ok(inode, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err)
+ return err;
+
+diff --git a/fs/minix/file.c b/fs/minix/file.c
+index 94f0eb9a6e2c..a6a4797aa0d4 100644
+--- a/fs/minix/file.c
++++ b/fs/minix/file.c
+@@ -26,7 +26,7 @@ static int minix_setattr(struct dentry *dentry, struct iattr *attr)
+ struct inode *inode = d_inode(dentry);
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/mount.h b/fs/mount.h
+index 6a61c2b3e385..2152c16ddf74 100644
+--- a/fs/mount.h
++++ b/fs/mount.h
+@@ -13,6 +13,8 @@ struct mnt_namespace {
+ u64 seq; /* Sequence number to prevent loops */
+ wait_queue_head_t poll;
+ u64 event;
++ unsigned int mounts; /* # of mounts in the namespace */
++ unsigned int pending_mounts;
+ };
+
+ struct mnt_pcp {
+diff --git a/fs/namespace.c b/fs/namespace.c
+index 556721fb0cf6..f853aaf92ec9 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -27,6 +27,9 @@
+ #include "pnode.h"
+ #include "internal.h"
+
++/* Maximum number of mounts in a mount namespace */
++unsigned int sysctl_mount_max __read_mostly = 100000;
++
+ static unsigned int m_hash_mask __read_mostly;
+ static unsigned int m_hash_shift __read_mostly;
+ static unsigned int mp_hash_mask __read_mostly;
+@@ -888,6 +891,9 @@ static void commit_tree(struct mount *mnt, struct mount *shadows)
+
+ list_splice(&head, n->list.prev);
+
++ n->mounts += n->pending_mounts;
++ n->pending_mounts = 0;
++
+ attach_shadowed(mnt, parent, shadows);
+ touch_mnt_namespace(n);
+ }
+@@ -1408,11 +1414,16 @@ static void umount_tree(struct mount *mnt, enum umount_tree_flags how)
+ propagate_umount(&tmp_list);
+
+ while (!list_empty(&tmp_list)) {
++ struct mnt_namespace *ns;
+ bool disconnect;
+ p = list_first_entry(&tmp_list, struct mount, mnt_list);
+ list_del_init(&p->mnt_expire);
+ list_del_init(&p->mnt_list);
+- __touch_mnt_namespace(p->mnt_ns);
++ ns = p->mnt_ns;
++ if (ns) {
++ ns->mounts--;
++ __touch_mnt_namespace(ns);
++ }
+ p->mnt_ns = NULL;
+ if (how & UMOUNT_SYNC)
+ p->mnt.mnt_flags |= MNT_SYNC_UMOUNT;
+@@ -1821,6 +1832,28 @@ static int invent_group_ids(struct mount *mnt, bool recurse)
+ return 0;
+ }
+
++int count_mounts(struct mnt_namespace *ns, struct mount *mnt)
++{
++ unsigned int max = READ_ONCE(sysctl_mount_max);
++ unsigned int mounts = 0, old, pending, sum;
++ struct mount *p;
++
++ for (p = mnt; p; p = next_mnt(p, mnt))
++ mounts++;
++
++ old = ns->mounts;
++ pending = ns->pending_mounts;
++ sum = old + pending;
++ if ((old > sum) ||
++ (pending > sum) ||
++ (max < sum) ||
++ (mounts > (max - sum)))
++ return -ENOSPC;
++
++ ns->pending_mounts = pending + mounts;
++ return 0;
++}
++
+ /*
+ * @source_mnt : mount tree to be attached
+ * @nd : place the mount tree @source_mnt is attached
+@@ -1890,10 +1923,18 @@ static int attach_recursive_mnt(struct mount *source_mnt,
+ struct path *parent_path)
+ {
+ HLIST_HEAD(tree_list);
++ struct mnt_namespace *ns = dest_mnt->mnt_ns;
+ struct mount *child, *p;
+ struct hlist_node *n;
+ int err;
+
++ /* Is there space to add these mounts to the mount namespace? */
++ if (!parent_path) {
++ err = count_mounts(ns, source_mnt);
++ if (err)
++ goto out;
++ }
++
+ if (IS_MNT_SHARED(dest_mnt)) {
+ err = invent_group_ids(source_mnt, true);
+ if (err)
+@@ -1930,11 +1971,13 @@ static int attach_recursive_mnt(struct mount *source_mnt,
+ out_cleanup_ids:
+ while (!hlist_empty(&tree_list)) {
+ child = hlist_entry(tree_list.first, struct mount, mnt_hash);
++ child->mnt_parent->mnt_ns->pending_mounts = 0;
+ umount_tree(child, UMOUNT_SYNC);
+ }
+ unlock_mount_hash();
+ cleanup_group_ids(source_mnt, NULL);
+ out:
++ ns->pending_mounts = 0;
+ return err;
+ }
+
+@@ -2758,6 +2801,8 @@ static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns)
+ init_waitqueue_head(&new_ns->poll);
+ new_ns->event = 0;
+ new_ns->user_ns = get_user_ns(user_ns);
++ new_ns->mounts = 0;
++ new_ns->pending_mounts = 0;
+ return new_ns;
+ }
+
+@@ -2807,6 +2852,7 @@ struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
+ q = new;
+ while (p) {
+ q->mnt_ns = new_ns;
++ new_ns->mounts++;
+ if (new_fs) {
+ if (&p->mnt == new_fs->root.mnt) {
+ new_fs->root.mnt = mntget(&q->mnt);
+@@ -2845,6 +2891,7 @@ static struct mnt_namespace *create_mnt_ns(struct vfsmount *m)
+ struct mount *mnt = real_mount(m);
+ mnt->mnt_ns = new_ns;
+ new_ns->root = mnt;
++ new_ns->mounts++;
+ list_add(&mnt->mnt_list, &new_ns->list);
+ } else {
+ mntput(m);
+diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
+index 9605a2f63549..7b1261bc2dee 100644
+--- a/fs/ncpfs/inode.c
++++ b/fs/ncpfs/inode.c
+@@ -884,7 +884,7 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
+ /* ageing the dentry to force validation */
+ ncp_age_dentry(server, dentry);
+
+- result = inode_change_ok(inode, attr);
++ result = setattr_prepare(dentry, attr);
+ if (result < 0)
+ goto out;
+
+diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
+index aecbcd34d336..44f6f4f5eee0 100644
+--- a/fs/nfsd/nfsproc.c
++++ b/fs/nfsd/nfsproc.c
+@@ -59,13 +59,59 @@ static __be32
+ nfsd_proc_setattr(struct svc_rqst *rqstp, struct nfsd_sattrargs *argp,
+ struct nfsd_attrstat *resp)
+ {
++ struct iattr *iap = &argp->attrs;
++ struct svc_fh *fhp;
+ __be32 nfserr;
++
+ dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n",
+ SVCFH_fmt(&argp->fh),
+ argp->attrs.ia_valid, (long) argp->attrs.ia_size);
+
+- fh_copy(&resp->fh, &argp->fh);
+- nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,0, (time_t)0);
++ fhp = fh_copy(&resp->fh, &argp->fh);
++
++ /*
++ * NFSv2 does not differentiate between "set-[ac]time-to-now"
++ * which only requires access, and "set-[ac]time-to-X" which
++ * requires ownership.
++ * So if it looks like it might be "set both to the same time which
++ * is close to now", and if setattr_prepare fails, then we
++ * convert to "set to now" instead of "set to explicit time"
++ *
++ * We only call setattr_prepare as the last test as technically
++ * it is not an interface that we should be using.
++ */
++#define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
++#define MAX_TOUCH_TIME_ERROR (30*60)
++ if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET &&
++ iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) {
++ /*
++ * Looks probable.
++ *
++ * Now just make sure time is in the right ballpark.
++ * Solaris, at least, doesn't seem to care what the time
++ * request is. We require it be within 30 minutes of now.
++ */
++ time_t delta = iap->ia_atime.tv_sec - get_seconds();
++
++ nfserr = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
++ if (nfserr)
++ goto done;
++
++ if (delta < 0)
++ delta = -delta;
++ if (delta < MAX_TOUCH_TIME_ERROR &&
++ setattr_prepare(fhp->fh_dentry, iap) != 0) {
++ /*
++ * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME.
++ * This will cause notify_change to set these times
++ * to "now"
++ */
++ iap->ia_valid &= ~BOTH_TIME_SET;
++ }
++ }
++
++ nfserr = nfsd_setattr(rqstp, fhp, iap, 0, (time_t)0);
++done:
+ return nfsd_return_attrs(nfserr, resp);
+ }
+
+diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
+index 84d770be056e..92de3747ea8b 100644
+--- a/fs/nfsd/vfs.c
++++ b/fs/nfsd/vfs.c
+@@ -302,42 +302,6 @@ commit_metadata(struct svc_fh *fhp)
+ static void
+ nfsd_sanitize_attrs(struct inode *inode, struct iattr *iap)
+ {
+- /*
+- * NFSv2 does not differentiate between "set-[ac]time-to-now"
+- * which only requires access, and "set-[ac]time-to-X" which
+- * requires ownership.
+- * So if it looks like it might be "set both to the same time which
+- * is close to now", and if inode_change_ok fails, then we
+- * convert to "set to now" instead of "set to explicit time"
+- *
+- * We only call inode_change_ok as the last test as technically
+- * it is not an interface that we should be using.
+- */
+-#define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
+-#define MAX_TOUCH_TIME_ERROR (30*60)
+- if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET &&
+- iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) {
+- /*
+- * Looks probable.
+- *
+- * Now just make sure time is in the right ballpark.
+- * Solaris, at least, doesn't seem to care what the time
+- * request is. We require it be within 30 minutes of now.
+- */
+- time_t delta = iap->ia_atime.tv_sec - get_seconds();
+- if (delta < 0)
+- delta = -delta;
+- if (delta < MAX_TOUCH_TIME_ERROR &&
+- inode_change_ok(inode, iap) != 0) {
+- /*
+- * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME.
+- * This will cause notify_change to set these times
+- * to "now"
+- */
+- iap->ia_valid &= ~BOTH_TIME_SET;
+- }
+- }
+-
+ /* sanitize the mode change */
+ if (iap->ia_valid & ATTR_MODE) {
+ iap->ia_mode &= S_IALLUGO;
+diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
+index 258d9fe2521a..b40df2bb5ee4 100644
+--- a/fs/nilfs2/inode.c
++++ b/fs/nilfs2/inode.c
+@@ -839,7 +839,7 @@ int nilfs_setattr(struct dentry *dentry, struct iattr *iattr)
+ struct super_block *sb = inode->i_sb;
+ int err;
+
+- err = inode_change_ok(inode, iattr);
++ err = setattr_prepare(dentry, iattr);
+ if (err)
+ return err;
+
+diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
+index d284f07eda77..c178763893f3 100644
+--- a/fs/ntfs/inode.c
++++ b/fs/ntfs/inode.c
+@@ -2893,7 +2893,7 @@ int ntfs_setattr(struct dentry *dentry, struct iattr *attr)
+ int err;
+ unsigned int ia_valid = attr->ia_valid;
+
+- err = inode_change_ok(vi, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err)
+ goto out;
+ /* We do not support NTFS ACLs yet. */
+diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
+index 762e5a3aecd3..c7641f656494 100644
+--- a/fs/ocfs2/acl.c
++++ b/fs/ocfs2/acl.c
+@@ -241,13 +241,11 @@ int ocfs2_set_acl(handle_t *handle,
+ case ACL_TYPE_ACCESS:
+ name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS;
+ if (acl) {
+- umode_t mode = inode->i_mode;
+- ret = posix_acl_equiv_mode(acl, &mode);
+- if (ret < 0)
+- return ret;
++ umode_t mode;
+
+- if (ret == 0)
+- acl = NULL;
++ ret = posix_acl_update_mode(inode, &mode, &acl);
++ if (ret)
++ return ret;
+
+ ret = ocfs2_acl_set_mode(inode, di_bh,
+ handle, mode);
+diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c
+index b5cf27dcb18a..43ac2289c613 100644
+--- a/fs/ocfs2/dlmfs/dlmfs.c
++++ b/fs/ocfs2/dlmfs/dlmfs.c
+@@ -211,7 +211,7 @@ static int dlmfs_file_setattr(struct dentry *dentry, struct iattr *attr)
+ struct inode *inode = d_inode(dentry);
+
+ attr->ia_valid &= ~ATTR_SIZE;
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
+index e00be7f509db..bc06b982e9ea 100644
+--- a/fs/ocfs2/file.c
++++ b/fs/ocfs2/file.c
+@@ -1150,7 +1150,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
+ if (!(attr->ia_valid & OCFS2_VALID_ATTRS))
+ return 0;
+
+- status = inode_change_ok(inode, attr);
++ status = setattr_prepare(dentry, attr);
+ if (status)
+ return status;
+
+diff --git a/fs/omfs/file.c b/fs/omfs/file.c
+index d9e26cfbb793..bf83e6644333 100644
+--- a/fs/omfs/file.c
++++ b/fs/omfs/file.c
+@@ -349,7 +349,7 @@ static int omfs_setattr(struct dentry *dentry, struct iattr *attr)
+ struct inode *inode = d_inode(dentry);
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index 0bb8347c0d8b..d293034ae2cb 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -54,7 +54,7 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr)
+ * inode_newsize_ok() will always check against MAX_LFS_FILESIZE and not
+ * check for a swapfile (which this won't be anyway).
+ */
+- err = inode_change_ok(dentry->d_inode, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err)
+ return err;
+
+diff --git a/fs/pnode.c b/fs/pnode.c
+index 99899705b105..234a9ac49958 100644
+--- a/fs/pnode.c
++++ b/fs/pnode.c
+@@ -259,7 +259,7 @@ static int propagate_one(struct mount *m)
+ read_sequnlock_excl(&mount_lock);
+ }
+ hlist_add_head(&child->mnt_hash, list);
+- return 0;
++ return count_mounts(m->mnt_ns, child);
+ }
+
+ /*
+diff --git a/fs/pnode.h b/fs/pnode.h
+index 0fcdbe7ca648..550f5a8b4fcf 100644
+--- a/fs/pnode.h
++++ b/fs/pnode.h
+@@ -52,4 +52,5 @@ void mnt_set_mountpoint(struct mount *, struct mountpoint *,
+ struct mount *copy_tree(struct mount *, struct dentry *, int);
+ bool is_path_reachable(struct mount *, struct dentry *,
+ const struct path *root);
++int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
+ #endif /* _LINUX_PNODE_H */
+diff --git a/fs/posix_acl.c b/fs/posix_acl.c
+index a9dafa83678c..0ef1c3722504 100644
+--- a/fs/posix_acl.c
++++ b/fs/posix_acl.c
+@@ -598,6 +598,37 @@ no_mem:
+ }
+ EXPORT_SYMBOL_GPL(posix_acl_create);
+
++/**
++ * posix_acl_update_mode - update mode in set_acl
++ *
++ * Update the file mode when setting an ACL: compute the new file permission
++ * bits based on the ACL. In addition, if the ACL is equivalent to the new
++ * file mode, set *acl to NULL to indicate that no ACL should be set.
++ *
++ * As with chmod, clear the setgit bit if the caller is not in the owning group
++ * or capable of CAP_FSETID (see inode_change_ok).
++ *
++ * Called from set_acl inode operations.
++ */
++int posix_acl_update_mode(struct inode *inode, umode_t *mode_p,
++ struct posix_acl **acl)
++{
++ umode_t mode = inode->i_mode;
++ int error;
++
++ error = posix_acl_equiv_mode(*acl, &mode);
++ if (error < 0)
++ return error;
++ if (error == 0)
++ *acl = NULL;
++ if (!in_group_p(inode->i_gid) &&
++ !capable_wrt_inode_uidgid(inode, CAP_FSETID))
++ mode &= ~S_ISGID;
++ *mode_p = mode;
++ return 0;
++}
++EXPORT_SYMBOL(posix_acl_update_mode);
++
+ /*
+ * Fix up the uids and gids in posix acl extended attributes in place.
+ */
+diff --git a/fs/proc/base.c b/fs/proc/base.c
+index 239dca3fb676..fab32ad5d96d 100644
+--- a/fs/proc/base.c
++++ b/fs/proc/base.c
+@@ -517,7 +517,7 @@ int proc_setattr(struct dentry *dentry, struct iattr *attr)
+ if (attr->ia_valid & ATTR_MODE)
+ return -EPERM;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/proc/generic.c b/fs/proc/generic.c
+index e5dee5c3188e..d99099fe62d4 100644
+--- a/fs/proc/generic.c
++++ b/fs/proc/generic.c
+@@ -105,7 +105,7 @@ static int proc_notify_change(struct dentry *dentry, struct iattr *iattr)
+ struct proc_dir_entry *de = PDE(inode);
+ int error;
+
+- error = inode_change_ok(inode, iattr);
++ error = setattr_prepare(dentry, iattr);
+ if (error)
+ return error;
+
+diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
+index fdda62e6115e..0dea606074c7 100644
+--- a/fs/proc/proc_sysctl.c
++++ b/fs/proc/proc_sysctl.c
+@@ -753,7 +753,7 @@ static int proc_sys_setattr(struct dentry *dentry, struct iattr *attr)
+ if (attr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID))
+ return -EPERM;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
+index ba1323a94924..aab2593f3179 100644
+--- a/fs/ramfs/file-nommu.c
++++ b/fs/ramfs/file-nommu.c
+@@ -168,7 +168,7 @@ static int ramfs_nommu_setattr(struct dentry *dentry, struct iattr *ia)
+ int ret = 0;
+
+ /* POSIX UID/GID verification for setting inode attributes */
+- ret = inode_change_ok(inode, ia);
++ ret = setattr_prepare(dentry, ia);
+ if (ret)
+ return ret;
+
+diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
+index f6f2fbad9777..7da1232a78e3 100644
+--- a/fs/reiserfs/inode.c
++++ b/fs/reiserfs/inode.c
+@@ -3312,7 +3312,7 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
+ unsigned int ia_valid;
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
+index 4b34b9dc03dd..9b1824f35501 100644
+--- a/fs/reiserfs/xattr_acl.c
++++ b/fs/reiserfs/xattr_acl.c
+@@ -246,13 +246,9 @@ __reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode,
+ case ACL_TYPE_ACCESS:
+ name = POSIX_ACL_XATTR_ACCESS;
+ if (acl) {
+- error = posix_acl_equiv_mode(acl, &inode->i_mode);
+- if (error < 0)
++ error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
++ if (error)
+ return error;
+- else {
+- if (error == 0)
+- acl = NULL;
+- }
+ }
+ break;
+ case ACL_TYPE_DEFAULT:
+diff --git a/fs/sysv/file.c b/fs/sysv/file.c
+index 82ddc09061e2..7ba997e31aeb 100644
+--- a/fs/sysv/file.c
++++ b/fs/sysv/file.c
+@@ -33,7 +33,7 @@ static int sysv_setattr(struct dentry *dentry, struct iattr *attr)
+ struct inode *inode = d_inode(dentry);
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
+index 75e9b2db14ab..2dc8ce485c51 100644
+--- a/fs/ubifs/file.c
++++ b/fs/ubifs/file.c
+@@ -1263,7 +1263,7 @@ int ubifs_setattr(struct dentry *dentry, struct iattr *attr)
+
+ dbg_gen("ino %lu, mode %#x, ia_valid %#x",
+ inode->i_ino, inode->i_mode, attr->ia_valid);
+- err = inode_change_ok(inode, attr);
++ err = setattr_prepare(dentry, attr);
+ if (err)
+ return err;
+
+diff --git a/fs/udf/file.c b/fs/udf/file.c
+index 7a95b8fed302..889f1e5da507 100644
+--- a/fs/udf/file.c
++++ b/fs/udf/file.c
+@@ -252,7 +252,7 @@ static int udf_setattr(struct dentry *dentry, struct iattr *attr)
+ struct inode *inode = d_inode(dentry);
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
+index 21154704c168..a958b36f40bb 100644
+--- a/fs/ufs/truncate.c
++++ b/fs/ufs/truncate.c
+@@ -496,7 +496,7 @@ int ufs_setattr(struct dentry *dentry, struct iattr *attr)
+ unsigned int ia_valid = attr->ia_valid;
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/fs/utimes.c b/fs/utimes.c
+index aa138d64560a..61abc3051377 100644
+--- a/fs/utimes.c
++++ b/fs/utimes.c
+@@ -81,7 +81,7 @@ static int utimes_common(struct path *path, struct timespec *times)
+ newattrs.ia_valid |= ATTR_MTIME_SET;
+ }
+ /*
+- * Tell inode_change_ok(), that this is an explicit time
++ * Tell setattr_prepare(), that this is an explicit time
+ * update, even if neither ATTR_ATIME_SET nor ATTR_MTIME_SET
+ * were used.
+ */
+@@ -90,7 +90,7 @@ static int utimes_common(struct path *path, struct timespec *times)
+ /*
+ * If times is NULL (or both times are UTIME_NOW),
+ * then we need to check permissions, because
+- * inode_change_ok() won't do it.
++ * setattr_prepare() won't do it.
+ */
+ error = -EACCES;
+ if (IS_IMMUTABLE(inode))
+diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
+index 4b641676f258..e80dbfa2a7b9 100644
+--- a/fs/xfs/xfs_acl.c
++++ b/fs/xfs/xfs_acl.c
+@@ -284,16 +284,11 @@ xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ return error;
+
+ if (type == ACL_TYPE_ACCESS) {
+- umode_t mode = inode->i_mode;
+- error = posix_acl_equiv_mode(acl, &mode);
+-
+- if (error <= 0) {
+- acl = NULL;
+-
+- if (error < 0)
+- return error;
+- }
++ umode_t mode;
+
++ error = posix_acl_update_mode(inode, &mode, &acl);
++ if (error)
++ return error;
+ error = xfs_set_mode(inode, mode);
+ if (error)
+ return error;
+diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
+index 3b7591224f4a..550f8c4733ee 100644
+--- a/fs/xfs/xfs_file.c
++++ b/fs/xfs/xfs_file.c
+@@ -973,7 +973,7 @@ xfs_file_fallocate(
+
+ iattr.ia_valid = ATTR_SIZE;
+ iattr.ia_size = new_size;
+- error = xfs_setattr_size(ip, &iattr);
++ error = xfs_vn_setattr_size(file->f_path.dentry, &iattr);
+ if (error)
+ goto out_unlock;
+ }
+diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
+index c29f34253e2b..6b67d617c092 100644
+--- a/fs/xfs/xfs_inode.c
++++ b/fs/xfs/xfs_inode.c
+@@ -1766,7 +1766,7 @@ xfs_inactive_truncate(
+ /*
+ * Log the inode size first to prevent stale data exposure in the event
+ * of a system crash before the truncate completes. See the related
+- * comment in xfs_setattr_size() for details.
++ * comment in xfs_vn_setattr_size() for details.
+ */
+ ip->i_d.di_size = 0;
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
+index 87f67c6b654c..82e49109d0b6 100644
+--- a/fs/xfs/xfs_ioctl.c
++++ b/fs/xfs/xfs_ioctl.c
+@@ -720,7 +720,7 @@ xfs_ioc_space(
+ iattr.ia_valid = ATTR_SIZE;
+ iattr.ia_size = bf->l_start;
+
+- error = xfs_setattr_size(ip, &iattr);
++ error = xfs_vn_setattr_size(filp->f_path.dentry, &iattr);
+ break;
+ default:
+ ASSERT(0);
+diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
+index f4cd7204e236..4e4d6511185b 100644
+--- a/fs/xfs/xfs_iops.c
++++ b/fs/xfs/xfs_iops.c
+@@ -537,6 +537,30 @@ xfs_setattr_time(
+ }
+ }
+
++static int
++xfs_vn_change_ok(
++ struct dentry *dentry,
++ struct iattr *iattr)
++{
++ struct inode *inode = d_inode(dentry);
++ struct xfs_inode *ip = XFS_I(inode);
++ struct xfs_mount *mp = ip->i_mount;
++
++ if (mp->m_flags & XFS_MOUNT_RDONLY)
++ return -EROFS;
++
++ if (XFS_FORCED_SHUTDOWN(mp))
++ return -EIO;
++
++ return setattr_prepare(dentry, iattr);
++}
++
++/*
++ * Set non-size attributes of an inode.
++ *
++ * Caution: The caller of this function is responsible for calling
++ * setattr_prepare() or otherwise verifying the change is fine.
++ */
+ int
+ xfs_setattr_nonsize(
+ struct xfs_inode *ip,
+@@ -553,21 +577,6 @@ xfs_setattr_nonsize(
+ struct xfs_dquot *udqp = NULL, *gdqp = NULL;
+ struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL;
+
+- trace_xfs_setattr(ip);
+-
+- /* If acls are being inherited, we already have this checked */
+- if (!(flags & XFS_ATTR_NOACL)) {
+- if (mp->m_flags & XFS_MOUNT_RDONLY)
+- return -EROFS;
+-
+- if (XFS_FORCED_SHUTDOWN(mp))
+- return -EIO;
+-
+- error = inode_change_ok(inode, iattr);
+- if (error)
+- return error;
+- }
+-
+ ASSERT((mask & ATTR_SIZE) == 0);
+
+ /*
+@@ -741,8 +750,27 @@ out_dqrele:
+ return error;
+ }
+
++int
++xfs_vn_setattr_nonsize(
++ struct dentry *dentry,
++ struct iattr *iattr)
++{
++ struct xfs_inode *ip = XFS_I(d_inode(dentry));
++ int error;
++
++ trace_xfs_setattr(ip);
++
++ error = xfs_vn_change_ok(dentry, iattr);
++ if (error)
++ return error;
++ return xfs_setattr_nonsize(ip, iattr, 0);
++}
++
+ /*
+ * Truncate file. Must have write permission and not be a directory.
++ *
++ * Caution: The caller of this function is responsible for calling
++ * setattr_prepare() or otherwise verifying the change is fine.
+ */
+ int
+ xfs_setattr_size(
+@@ -758,18 +786,6 @@ xfs_setattr_size(
+ uint commit_flags = 0;
+ bool did_zeroing = false;
+
+- trace_xfs_setattr(ip);
+-
+- if (mp->m_flags & XFS_MOUNT_RDONLY)
+- return -EROFS;
+-
+- if (XFS_FORCED_SHUTDOWN(mp))
+- return -EIO;
+-
+- error = inode_change_ok(inode, iattr);
+- if (error)
+- return error;
+-
+ ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
+ ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
+ ASSERT(S_ISREG(ip->i_d.di_mode));
+@@ -941,16 +957,32 @@ out_trans_cancel:
+ goto out_unlock;
+ }
+
++int
++xfs_vn_setattr_size(
++ struct dentry *dentry,
++ struct iattr *iattr)
++{
++ struct xfs_inode *ip = XFS_I(d_inode(dentry));
++ int error;
++
++ trace_xfs_setattr(ip);
++
++ error = xfs_vn_change_ok(dentry, iattr);
++ if (error)
++ return error;
++ return xfs_setattr_size(ip, iattr);
++}
++
+ STATIC int
+ xfs_vn_setattr(
+ struct dentry *dentry,
+ struct iattr *iattr)
+ {
+- struct xfs_inode *ip = XFS_I(d_inode(dentry));
+ int error;
+
+ if (iattr->ia_valid & ATTR_SIZE) {
+- uint iolock = XFS_IOLOCK_EXCL;
++ struct xfs_inode *ip = XFS_I(d_inode(dentry));
++ uint iolock = XFS_IOLOCK_EXCL;
+
+ xfs_ilock(ip, iolock);
+ error = xfs_break_layouts(d_inode(dentry), &iolock, true);
+@@ -958,11 +990,11 @@ xfs_vn_setattr(
+ xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
+ iolock |= XFS_MMAPLOCK_EXCL;
+
+- error = xfs_setattr_size(ip, iattr);
++ error = xfs_vn_setattr_size(dentry, iattr);
+ }
+ xfs_iunlock(ip, iolock);
+ } else {
+- error = xfs_setattr_nonsize(ip, iattr, 0);
++ error = xfs_vn_setattr_nonsize(dentry, iattr);
+ }
+
+ return error;
+diff --git a/fs/xfs/xfs_iops.h b/fs/xfs/xfs_iops.h
+index a0f84abb0d09..0259a383721a 100644
+--- a/fs/xfs/xfs_iops.h
++++ b/fs/xfs/xfs_iops.h
+@@ -33,6 +33,7 @@ extern ssize_t xfs_vn_listxattr(struct dentry *, char *data, size_t size);
+ extern void xfs_setattr_time(struct xfs_inode *ip, struct iattr *iattr);
+ extern int xfs_setattr_nonsize(struct xfs_inode *ip, struct iattr *vap,
+ int flags);
+-extern int xfs_setattr_size(struct xfs_inode *ip, struct iattr *vap);
++extern int xfs_vn_setattr_nonsize(struct dentry *dentry, struct iattr *vap);
++extern int xfs_vn_setattr_size(struct dentry *dentry, struct iattr *vap);
+
+ #endif /* __XFS_IOPS_H__ */
+diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
+index 5e13b987d9e2..678e97fa3869 100644
+--- a/include/linux/can/dev.h
++++ b/include/linux/can/dev.h
+@@ -31,6 +31,7 @@ enum can_mode {
+ * CAN common private data
+ */
+ struct can_priv {
++ struct net_device *dev;
+ struct can_device_stats can_stats;
+
+ struct can_bittiming bittiming, data_bittiming;
+@@ -46,7 +47,7 @@ struct can_priv {
+ u32 ctrlmode_static; /* static enabled options for driver/hardware */
+
+ int restart_ms;
+- struct timer_list restart_timer;
++ struct delayed_work restart_work;
+
+ int (*do_set_bittiming)(struct net_device *dev);
+ int (*do_set_data_bittiming)(struct net_device *dev);
+diff --git a/include/linux/fs.h b/include/linux/fs.h
+index ae327f6a53f6..31c3d818c981 100644
+--- a/include/linux/fs.h
++++ b/include/linux/fs.h
+@@ -2816,7 +2816,7 @@ extern int buffer_migrate_page(struct address_space *,
+ #define buffer_migrate_page NULL
+ #endif
+
+-extern int inode_change_ok(const struct inode *, struct iattr *);
++extern int setattr_prepare(struct dentry *, struct iattr *);
+ extern int inode_newsize_ok(const struct inode *, loff_t offset);
+ extern void setattr_copy(struct inode *inode, const struct iattr *attr);
+
+diff --git a/include/linux/mount.h b/include/linux/mount.h
+index f822c3c11377..dc6cd800cd5d 100644
+--- a/include/linux/mount.h
++++ b/include/linux/mount.h
+@@ -95,4 +95,6 @@ extern void mark_mounts_for_expiry(struct list_head *mounts);
+
+ extern dev_t name_to_dev_t(const char *name);
+
++extern unsigned int sysctl_mount_max;
++
+ #endif /* _LINUX_MOUNT_H */
+diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
+index 6c86c7edafa7..ddd47c3a757d 100644
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -1957,7 +1957,10 @@ struct napi_gro_cb {
+ /* Used in foo-over-udp, set in udp[46]_gro_receive */
+ u8 is_ipv6:1;
+
+- /* 7 bit hole */
++ /* Number of gro_receive callbacks this packet already went through */
++ u8 recursion_counter:4;
++
++ /* 3 bit hole */
+
+ /* used to support CHECKSUM_COMPLETE for tunneling protocols */
+ __wsum csum;
+@@ -1968,6 +1971,25 @@ struct napi_gro_cb {
+
+ #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
+
++#define GRO_RECURSION_LIMIT 15
++static inline int gro_recursion_inc_test(struct sk_buff *skb)
++{
++ return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT;
++}
++
++typedef struct sk_buff **(*gro_receive_t)(struct sk_buff **, struct sk_buff *);
++static inline struct sk_buff **call_gro_receive(gro_receive_t cb,
++ struct sk_buff **head,
++ struct sk_buff *skb)
++{
++ if (gro_recursion_inc_test(skb)) {
++ NAPI_GRO_CB(skb)->flush |= 1;
++ return NULL;
++ }
++
++ return cb(head, skb);
++}
++
+ struct packet_type {
+ __be16 type; /* This is really htons(ether_type). */
+ struct net_device *dev; /* NULL is wildcarded here */
+diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h
+index 3e96a6a76103..d1a8ad7e5ae4 100644
+--- a/include/linux/posix_acl.h
++++ b/include/linux/posix_acl.h
+@@ -95,6 +95,7 @@ extern int set_posix_acl(struct inode *, int, struct posix_acl *);
+ extern int posix_acl_chmod(struct inode *, umode_t);
+ extern int posix_acl_create(struct inode *, umode_t *, struct posix_acl **,
+ struct posix_acl **);
++extern int posix_acl_update_mode(struct inode *, umode_t *, struct posix_acl **);
+
+ extern int simple_set_acl(struct inode *, struct posix_acl *, int);
+ extern int simple_acl_create(struct inode *, struct inode *);
+diff --git a/include/net/tcp.h b/include/net/tcp.h
+index 6d204f3f9df8..3d3a365233f0 100644
+--- a/include/net/tcp.h
++++ b/include/net/tcp.h
+@@ -1434,6 +1434,8 @@ static inline void tcp_check_send_head(struct sock *sk, struct sk_buff *skb_unli
+ {
+ if (sk->sk_send_head == skb_unlinked)
+ sk->sk_send_head = NULL;
++ if (tcp_sk(sk)->highest_sack == skb_unlinked)
++ tcp_sk(sk)->highest_sack = NULL;
+ }
+
+ static inline void tcp_init_send_head(struct sock *sk)
+diff --git a/kernel/cpuset.c b/kernel/cpuset.c
+index 388fc6f78c6f..71403502411b 100644
+--- a/kernel/cpuset.c
++++ b/kernel/cpuset.c
+@@ -323,8 +323,7 @@ static struct file_system_type cpuset_fs_type = {
+ /*
+ * Return in pmask the portion of a cpusets's cpus_allowed that
+ * are online. If none are online, walk up the cpuset hierarchy
+- * until we find one that does have some online cpus. The top
+- * cpuset always has some cpus online.
++ * until we find one that does have some online cpus.
+ *
+ * One way or another, we guarantee to return some non-empty subset
+ * of cpu_online_mask.
+@@ -333,8 +332,20 @@ static struct file_system_type cpuset_fs_type = {
+ */
+ static void guarantee_online_cpus(struct cpuset *cs, struct cpumask *pmask)
+ {
+- while (!cpumask_intersects(cs->effective_cpus, cpu_online_mask))
++ while (!cpumask_intersects(cs->effective_cpus, cpu_online_mask)) {
+ cs = parent_cs(cs);
++ if (unlikely(!cs)) {
++ /*
++ * The top cpuset doesn't have any online cpu as a
++ * consequence of a race between cpuset_hotplug_work
++ * and cpu hotplug notifier. But we know the top
++ * cpuset's effective_cpus is on its way to to be
++ * identical to cpu_online_mask.
++ */
++ cpumask_copy(pmask, cpu_online_mask);
++ return;
++ }
++ }
+ cpumask_and(pmask, cs->effective_cpus, cpu_online_mask);
+ }
+
+diff --git a/kernel/ptrace.c b/kernel/ptrace.c
+index 261ee21e62db..9650e7aee267 100644
+--- a/kernel/ptrace.c
++++ b/kernel/ptrace.c
+@@ -20,6 +20,7 @@
+ #include <linux/uio.h>
+ #include <linux/audit.h>
+ #include <linux/pid_namespace.h>
++#include <linux/user_namespace.h>
+ #include <linux/syscalls.h>
+ #include <linux/uaccess.h>
+ #include <linux/regset.h>
+@@ -207,12 +208,34 @@ static int ptrace_check_attach(struct task_struct *child, bool ignore_state)
+ return ret;
+ }
+
+-static int ptrace_has_cap(struct user_namespace *ns, unsigned int mode)
++static bool ptrace_has_cap(const struct cred *tcred, unsigned int mode)
+ {
++ struct user_namespace *tns = tcred->user_ns;
++
++ /* When a root-owned process enters a user namespace created by a
++ * malicious user, the user shouldn't be able to execute code under
++ * uid 0 by attaching to the root-owned process via ptrace.
++ * Therefore, similar to the capable_wrt_inode_uidgid() check,
++ * verify that all the uids and gids of the target process are
++ * mapped into a namespace below the current one in which the caller
++ * is capable.
++ * No fsuid/fsgid check because __ptrace_may_access doesn't do it
++ * either.
++ */
++ while (
++ !kuid_has_mapping(tns, tcred->euid) ||
++ !kuid_has_mapping(tns, tcred->suid) ||
++ !kuid_has_mapping(tns, tcred->uid) ||
++ !kgid_has_mapping(tns, tcred->egid) ||
++ !kgid_has_mapping(tns, tcred->sgid) ||
++ !kgid_has_mapping(tns, tcred->gid)) {
++ tns = tns->parent;
++ }
++
+ if (mode & PTRACE_MODE_NOAUDIT)
+- return has_ns_capability_noaudit(current, ns, CAP_SYS_PTRACE);
++ return has_ns_capability_noaudit(current, tns, CAP_SYS_PTRACE);
+ else
+- return has_ns_capability(current, ns, CAP_SYS_PTRACE);
++ return has_ns_capability(current, tns, CAP_SYS_PTRACE);
+ }
+
+ /* Returns 0 on success, -errno on denial. */
+@@ -264,7 +287,7 @@ static int __ptrace_may_access(struct task_struct *task, unsigned int mode)
+ gid_eq(caller_gid, tcred->sgid) &&
+ gid_eq(caller_gid, tcred->gid))
+ goto ok;
+- if (ptrace_has_cap(tcred->user_ns, mode))
++ if (ptrace_has_cap(tcred, mode))
+ goto ok;
+ rcu_read_unlock();
+ return -EPERM;
+@@ -275,7 +298,7 @@ ok:
+ dumpable = get_dumpable(task->mm);
+ rcu_read_lock();
+ if (dumpable != SUID_DUMP_USER &&
+- !ptrace_has_cap(__task_cred(task)->user_ns, mode)) {
++ !ptrace_has_cap(__task_cred(task), mode)) {
+ rcu_read_unlock();
+ return -EPERM;
+ }
+diff --git a/kernel/sysctl.c b/kernel/sysctl.c
+index 7d4900404c94..cebbff5f34fe 100644
+--- a/kernel/sysctl.c
++++ b/kernel/sysctl.c
+@@ -64,6 +64,7 @@
+ #include <linux/binfmts.h>
+ #include <linux/sched/sysctl.h>
+ #include <linux/kexec.h>
++#include <linux/mount.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/processor.h>
+@@ -1709,6 +1710,14 @@ static struct ctl_table fs_table[] = {
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ },
++ {
++ .procname = "mount-max",
++ .data = &sysctl_mount_max,
++ .maxlen = sizeof(unsigned int),
++ .mode = 0644,
++ .proc_handler = proc_dointvec_minmax,
++ .extra1 = &one,
++ },
+ { }
+ };
+
+diff --git a/mm/ksm.c b/mm/ksm.c
+index 7ee101eaacdf..22a2883eb822 100644
+--- a/mm/ksm.c
++++ b/mm/ksm.c
+@@ -283,7 +283,8 @@ static inline struct rmap_item *alloc_rmap_item(void)
+ {
+ struct rmap_item *rmap_item;
+
+- rmap_item = kmem_cache_zalloc(rmap_item_cache, GFP_KERNEL);
++ rmap_item = kmem_cache_zalloc(rmap_item_cache, GFP_KERNEL |
++ __GFP_NORETRY | __GFP_NOWARN);
+ if (rmap_item)
+ ksm_rmap_items++;
+ return rmap_item;
+diff --git a/mm/shmem.c b/mm/shmem.c
+index 46511ad90bc5..feaaf6ea1b86 100644
+--- a/mm/shmem.c
++++ b/mm/shmem.c
+@@ -548,7 +548,7 @@ static int shmem_setattr(struct dentry *dentry, struct iattr *attr)
+ struct shmem_inode_info *info = SHMEM_I(inode);
+ int error;
+
+- error = inode_change_ok(inode, attr);
++ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
+index 825e8fb5114b..f9e9a8148a43 100644
+--- a/net/bluetooth/rfcomm/sock.c
++++ b/net/bluetooth/rfcomm/sock.c
+@@ -334,16 +334,19 @@ static int rfcomm_sock_create(struct net *net, struct socket *sock,
+
+ static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
+ {
+- struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
++ struct sockaddr_rc sa;
+ struct sock *sk = sock->sk;
+- int chan = sa->rc_channel;
+- int err = 0;
+-
+- BT_DBG("sk %p %pMR", sk, &sa->rc_bdaddr);
++ int len, err = 0;
+
+ if (!addr || addr->sa_family != AF_BLUETOOTH)
+ return -EINVAL;
+
++ memset(&sa, 0, sizeof(sa));
++ len = min_t(unsigned int, sizeof(sa), addr_len);
++ memcpy(&sa, addr, len);
++
++ BT_DBG("sk %p %pMR", sk, &sa.rc_bdaddr);
++
+ lock_sock(sk);
+
+ if (sk->sk_state != BT_OPEN) {
+@@ -358,12 +361,13 @@ static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr
+
+ write_lock(&rfcomm_sk_list.lock);
+
+- if (chan && __rfcomm_get_listen_sock_by_addr(chan, &sa->rc_bdaddr)) {
++ if (sa.rc_channel &&
++ __rfcomm_get_listen_sock_by_addr(sa.rc_channel, &sa.rc_bdaddr)) {
+ err = -EADDRINUSE;
+ } else {
+ /* Save source address */
+- bacpy(&rfcomm_pi(sk)->src, &sa->rc_bdaddr);
+- rfcomm_pi(sk)->channel = chan;
++ bacpy(&rfcomm_pi(sk)->src, &sa.rc_bdaddr);
++ rfcomm_pi(sk)->channel = sa.rc_channel;
+ sk->sk_state = BT_BOUND;
+ }
+
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 185a3398c651..56d820fc2707 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -4060,6 +4060,7 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
+ NAPI_GRO_CB(skb)->flush = 0;
+ NAPI_GRO_CB(skb)->free = 0;
+ NAPI_GRO_CB(skb)->udp_mark = 0;
++ NAPI_GRO_CB(skb)->recursion_counter = 0;
+ NAPI_GRO_CB(skb)->gro_remcsum_start = 0;
+
+ /* Setup for GRO checksum validation */
+diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
+index f3bad41d725f..76f8389eacd2 100644
+--- a/net/ethernet/eth.c
++++ b/net/ethernet/eth.c
+@@ -434,7 +434,7 @@ struct sk_buff **eth_gro_receive(struct sk_buff **head,
+
+ skb_gro_pull(skb, sizeof(*eh));
+ skb_gro_postpull_rcsum(skb, eh, sizeof(*eh));
+- pp = ptype->callbacks.gro_receive(head, skb);
++ pp = call_gro_receive(ptype->callbacks.gro_receive, head, skb);
+
+ out_unlock:
+ rcu_read_unlock();
+diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
+index 0cc98b135b8f..2095cd6c31fd 100644
+--- a/net/ipv4/af_inet.c
++++ b/net/ipv4/af_inet.c
+@@ -1377,7 +1377,7 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head,
+ skb_gro_pull(skb, sizeof(*iph));
+ skb_set_transport_header(skb, skb_gro_offset(skb));
+
+- pp = ops->callbacks.gro_receive(head, skb);
++ pp = call_gro_receive(ops->callbacks.gro_receive, head, skb);
+
+ out_unlock:
+ rcu_read_unlock();
+diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
+index 4b67937692c9..b22a75c0a3d9 100644
+--- a/net/ipv4/fou.c
++++ b/net/ipv4/fou.c
+@@ -188,7 +188,7 @@ static struct sk_buff **fou_gro_receive(struct sk_buff **head,
+ if (!ops || !ops->callbacks.gro_receive)
+ goto out_unlock;
+
+- pp = ops->callbacks.gro_receive(head, skb);
++ pp = call_gro_receive(ops->callbacks.gro_receive, head, skb);
+
+ out_unlock:
+ rcu_read_unlock();
+@@ -355,7 +355,7 @@ static struct sk_buff **gue_gro_receive(struct sk_buff **head,
+ if (WARN_ON(!ops || !ops->callbacks.gro_receive))
+ goto out_unlock;
+
+- pp = ops->callbacks.gro_receive(head, skb);
++ pp = call_gro_receive(ops->callbacks.gro_receive, head, skb);
+
+ out_unlock:
+ rcu_read_unlock();
+diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
+index 5a8ee3282550..53300b88d569 100644
+--- a/net/ipv4/gre_offload.c
++++ b/net/ipv4/gre_offload.c
+@@ -214,7 +214,7 @@ static struct sk_buff **gre_gro_receive(struct sk_buff **head,
+ /* Adjusted NAPI_GRO_CB(skb)->csum after skb_gro_pull()*/
+ skb_gro_postpull_rcsum(skb, greh, grehlen);
+
+- pp = ptype->callbacks.gro_receive(head, skb);
++ pp = call_gro_receive(ptype->callbacks.gro_receive, head, skb);
+
+ out_unlock:
+ rcu_read_unlock();
+diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
+index f6ee0d561aab..3dac3d4aa26f 100644
+--- a/net/ipv4/ping.c
++++ b/net/ipv4/ping.c
+@@ -659,6 +659,10 @@ int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
+ if (len > 0xFFFF)
+ return -EMSGSIZE;
+
++ /* Must have at least a full ICMP header. */
++ if (len < icmph_len)
++ return -EINVAL;
++
+ /*
+ * Check the flags.
+ */
+diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
+index f9386160cbee..2af7b7e1a0f6 100644
+--- a/net/ipv4/udp_offload.c
++++ b/net/ipv4/udp_offload.c
+@@ -339,8 +339,13 @@ unflush:
+ skb_gro_pull(skb, sizeof(struct udphdr)); /* pull encapsulating udp header */
+ skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr));
+ NAPI_GRO_CB(skb)->proto = uo_priv->offload->ipproto;
+- pp = uo_priv->offload->callbacks.gro_receive(head, skb,
+- uo_priv->offload);
++
++ if (gro_recursion_inc_test(skb)) {
++ pp = NULL;
++ } else {
++ pp = uo_priv->offload->callbacks.gro_receive(head, skb,
++ uo_priv->offload);
++ }
+
+ out_unlock:
+ rcu_read_unlock();
+diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
+index 08b62047c67f..db0b8428d248 100644
+--- a/net/ipv6/ip6_offload.c
++++ b/net/ipv6/ip6_offload.c
+@@ -247,7 +247,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
+
+ skb_gro_postpull_rcsum(skb, iph, nlen);
+
+- pp = ops->callbacks.gro_receive(head, skb);
++ pp = call_gro_receive(ops->callbacks.gro_receive, head, skb);
+
+ out_unlock:
+ rcu_read_unlock();
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index a3654d929814..b9d1baaa8bdc 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -3344,19 +3344,25 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
+
+ if (optlen != sizeof(val))
+ return -EINVAL;
+- if (po->rx_ring.pg_vec || po->tx_ring.pg_vec)
+- return -EBUSY;
+ if (copy_from_user(&val, optval, sizeof(val)))
+ return -EFAULT;
+ switch (val) {
+ case TPACKET_V1:
+ case TPACKET_V2:
+ case TPACKET_V3:
+- po->tp_version = val;
+- return 0;
++ break;
+ default:
+ return -EINVAL;
+ }
++ lock_sock(sk);
++ if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) {
++ ret = -EBUSY;
++ } else {
++ po->tp_version = val;
++ ret = 0;
++ }
++ release_sock(sk);
++ return ret;
+ }
+ case PACKET_RESERVE:
+ {
+@@ -3819,6 +3825,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
+ /* Added to avoid minimal code churn */
+ struct tpacket_req *req = &req_u->req;
+
++ lock_sock(sk);
+ /* Opening a Tx-ring is NOT supported in TPACKET_V3 */
+ if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) {
+ WARN(1, "Tx-ring is not supported.\n");
+@@ -3900,7 +3907,6 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
+ goto out;
+ }
+
+- lock_sock(sk);
+
+ /* Detach socket from network */
+ spin_lock(&po->bind_lock);
+@@ -3949,11 +3955,11 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
+ if (!tx_ring)
+ prb_shutdown_retire_blk_timer(po, tx_ring, rb_queue);
+ }
+- release_sock(sk);
+
+ if (pg_vec)
+ free_pg_vec(pg_vec, order, req->tp_block_nr);
+ out:
++ release_sock(sk);
+ return err;
+ }
+
+diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
+index 70e3dacbf84a..bf7d6a44c6f2 100644
+--- a/net/tipc/bearer.c
++++ b/net/tipc/bearer.c
+@@ -386,6 +386,10 @@ int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b,
+ dev = dev_get_by_name(net, driver_name);
+ if (!dev)
+ return -ENODEV;
++ if (tipc_mtu_bad(dev, 0)) {
++ dev_put(dev);
++ return -EINVAL;
++ }
+
+ /* Associate TIPC bearer with L2 bearer */
+ rcu_assign_pointer(b->media_ptr, dev);
+@@ -524,14 +528,17 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
+ if (!b_ptr)
+ return NOTIFY_DONE;
+
+- b_ptr->mtu = dev->mtu;
+-
+ switch (evt) {
+ case NETDEV_CHANGE:
+ if (netif_carrier_ok(dev))
+ break;
+ case NETDEV_DOWN:
+ case NETDEV_CHANGEMTU:
++ if (tipc_mtu_bad(dev, 0)) {
++ bearer_disable(net, b_ptr, false);
++ break;
++ }
++ b_ptr->mtu = dev->mtu;
+ tipc_reset_bearer(net, b_ptr);
+ break;
+ case NETDEV_CHANGEADDR:
+diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
+index 5cad243ee8fc..b7302b012624 100644
+--- a/net/tipc/bearer.h
++++ b/net/tipc/bearer.h
+@@ -38,6 +38,7 @@
+ #define _TIPC_BEARER_H
+
+ #include "netlink.h"
++#include "msg.h"
+ #include <net/genetlink.h>
+
+ #define MAX_BEARERS 2
+@@ -61,6 +62,9 @@
+ #define TIPC_MEDIA_TYPE_IB 2
+ #define TIPC_MEDIA_TYPE_UDP 3
+
++/* minimum bearer MTU */
++#define TIPC_MIN_BEARER_MTU (MAX_H_SIZE + INT_H_SIZE)
++
+ /**
+ * struct tipc_node_map - set of node identifiers
+ * @count: # of nodes in set
+@@ -218,4 +222,13 @@ void tipc_bearer_stop(struct net *net);
+ void tipc_bearer_send(struct net *net, u32 bearer_id, struct sk_buff *buf,
+ struct tipc_media_addr *dest);
+
++/* check if device MTU is too low for tipc headers */
++static inline bool tipc_mtu_bad(struct net_device *dev, unsigned int reserve)
++{
++ if (dev->mtu >= TIPC_MIN_BEARER_MTU + reserve)
++ return false;
++ netdev_warn(dev, "MTU too low for tipc bearer\n");
++ return true;
++}
++
+ #endif /* _TIPC_BEARER_H */
+diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
+index f8dfee5072c0..e14f23542a1a 100644
+--- a/net/tipc/udp_media.c
++++ b/net/tipc/udp_media.c
+@@ -374,6 +374,11 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b,
+ udp_conf.local_ip.s_addr = htonl(INADDR_ANY);
+ udp_conf.use_udp_checksums = false;
+ ub->ifindex = dev->ifindex;
++ if (tipc_mtu_bad(dev, sizeof(struct iphdr) +
++ sizeof(struct udphdr))) {
++ err = -EINVAL;
++ goto err;
++ }
+ b->mtu = dev->mtu - sizeof(struct iphdr)
+ - sizeof(struct udphdr);
+ #if IS_ENABLED(CONFIG_IPV6)
+diff --git a/scripts/gcc-x86_64-has-stack-protector.sh b/scripts/gcc-x86_64-has-stack-protector.sh
+index 973e8c141567..17867e723a51 100755
+--- a/scripts/gcc-x86_64-has-stack-protector.sh
++++ b/scripts/gcc-x86_64-has-stack-protector.sh
+@@ -1,6 +1,6 @@
+ #!/bin/sh
+
+-echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
++echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fno-PIE -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
+ if [ "$?" -eq "0" ] ; then
+ echo y
+ else
diff --git a/1520_fix-race-condition-in-packet-set-ring.patch b/1520_fix-race-condition-in-packet-set-ring.patch
deleted file mode 100644
index d85527f..0000000
--- a/1520_fix-race-condition-in-packet-set-ring.patch
+++ /dev/null
@@ -1,62 +0,0 @@
---- a/net/packet/af_packet.c 2016-12-07 18:10:25.785812861 -0500
-+++ b/net/packet/af_packet.c 2016-12-07 18:18:45.597933525 -0500
-@@ -3648,19 +3648,25 @@ packet_setsockopt(struct socket *sock, i
-
- if (optlen != sizeof(val))
- return -EINVAL;
-- if (po->rx_ring.pg_vec || po->tx_ring.pg_vec)
-- return -EBUSY;
- if (copy_from_user(&val, optval, sizeof(val)))
- return -EFAULT;
- switch (val) {
- case TPACKET_V1:
- case TPACKET_V2:
- case TPACKET_V3:
-- po->tp_version = val;
-- return 0;
-+ break;
- default:
- return -EINVAL;
- }
-+ lock_sock(sk);
-+ if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) {
-+ ret = -EBUSY;
-+ } else {
-+ po->tp_version = val;
-+ ret = 0;
-+ }
-+ release_sock(sk);
-+ return ret;
- }
- case PACKET_RESERVE:
- {
-@@ -4164,6 +4170,7 @@ static int packet_set_ring(struct sock *
- /* Added to avoid minimal code churn */
- struct tpacket_req *req = &req_u->req;
-
-+ lock_sock(sk);
- /* Opening a Tx-ring is NOT supported in TPACKET_V3 */
- if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) {
- net_warn_ratelimited("Tx-ring is not supported.\n");
-@@ -4245,8 +4252,6 @@ static int packet_set_ring(struct sock *
- goto out;
- }
-
-- lock_sock(sk);
--
- /* Detach socket from network */
- spin_lock(&po->bind_lock);
- was_running = po->running;
-@@ -4294,11 +4299,11 @@ static int packet_set_ring(struct sock *
- if (!tx_ring)
- prb_shutdown_retire_blk_timer(po, rb_queue);
- }
-- release_sock(sk);
-
- if (pg_vec)
- free_pg_vec(pg_vec, order, req->tp_block_nr);
- out:
-+ release_sock(sk);
- return err;
- }
-
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-12-08 0:43 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-12-08 0:43 UTC (permalink / raw
To: gentoo-commits
commit: ef9c8970cb2c6c361f43617cc4de9528a6159b8a
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Dec 8 00:43:10 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Dec 8 00:43:10 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=ef9c8970
Fix race condition in packet_set_ring. CVE-2016-8655. Bug #601926.
0000_README | 4 ++
1520_fix-race-condition-in-packet-set-ring.patch | 62 ++++++++++++++++++++++++
2 files changed, 66 insertions(+)
diff --git a/0000_README b/0000_README
index 87cf515..7e1cb6f 100644
--- a/0000_README
+++ b/0000_README
@@ -195,6 +195,10 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
Desc: Enable link security restrictions by default.
+Patch: 1520_fix-race-condition-in-packet-set-ring.patch
+From: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=84ac7260236a49c79eede91617700174c2c19b0c
+Desc: packet: fix race condition in packet_set_ring. CVE-2016-8655. Bug #601926.
+
Patch: 1800_fix-lru-cache-add-oom-regression.patch
From: http://thread.gmane.org/gmane.linux.kernel.stable/184384
Desc: Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
diff --git a/1520_fix-race-condition-in-packet-set-ring.patch b/1520_fix-race-condition-in-packet-set-ring.patch
new file mode 100644
index 0000000..d85527f
--- /dev/null
+++ b/1520_fix-race-condition-in-packet-set-ring.patch
@@ -0,0 +1,62 @@
+--- a/net/packet/af_packet.c 2016-12-07 18:10:25.785812861 -0500
++++ b/net/packet/af_packet.c 2016-12-07 18:18:45.597933525 -0500
+@@ -3648,19 +3648,25 @@ packet_setsockopt(struct socket *sock, i
+
+ if (optlen != sizeof(val))
+ return -EINVAL;
+- if (po->rx_ring.pg_vec || po->tx_ring.pg_vec)
+- return -EBUSY;
+ if (copy_from_user(&val, optval, sizeof(val)))
+ return -EFAULT;
+ switch (val) {
+ case TPACKET_V1:
+ case TPACKET_V2:
+ case TPACKET_V3:
+- po->tp_version = val;
+- return 0;
++ break;
+ default:
+ return -EINVAL;
+ }
++ lock_sock(sk);
++ if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) {
++ ret = -EBUSY;
++ } else {
++ po->tp_version = val;
++ ret = 0;
++ }
++ release_sock(sk);
++ return ret;
+ }
+ case PACKET_RESERVE:
+ {
+@@ -4164,6 +4170,7 @@ static int packet_set_ring(struct sock *
+ /* Added to avoid minimal code churn */
+ struct tpacket_req *req = &req_u->req;
+
++ lock_sock(sk);
+ /* Opening a Tx-ring is NOT supported in TPACKET_V3 */
+ if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) {
+ net_warn_ratelimited("Tx-ring is not supported.\n");
+@@ -4245,8 +4252,6 @@ static int packet_set_ring(struct sock *
+ goto out;
+ }
+
+- lock_sock(sk);
+-
+ /* Detach socket from network */
+ spin_lock(&po->bind_lock);
+ was_running = po->running;
+@@ -4294,11 +4299,11 @@ static int packet_set_ring(struct sock *
+ if (!tx_ring)
+ prb_shutdown_retire_blk_timer(po, rb_queue);
+ }
+- release_sock(sk);
+
+ if (pg_vec)
+ free_pg_vec(pg_vec, order, req->tp_block_nr);
+ out:
++ release_sock(sk);
+ return err;
+ }
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-11-30 11:45 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-11-30 11:45 UTC (permalink / raw
To: gentoo-commits
commit: 5eab8276b7a473c02bb93990416e06e7c0bb7f5f
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Nov 30 11:45:51 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Nov 30 11:45:51 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=5eab8276
Linux patch 4.1.36
0000_README | 4 +
1035_linux-4.1.36.patch | 2346 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2350 insertions(+)
diff --git a/0000_README b/0000_README
index 5bb6b6b..87cf515 100644
--- a/0000_README
+++ b/0000_README
@@ -183,6 +183,10 @@ Patch: 1034_linux-4.1.35.patch
From: http://www.kernel.org
Desc: Linux 4.1.35
+Patch: 1035_linux-4.1.36.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.36
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1035_linux-4.1.36.patch b/1035_linux-4.1.36.patch
new file mode 100644
index 0000000..57e0271
--- /dev/null
+++ b/1035_linux-4.1.36.patch
@@ -0,0 +1,2346 @@
+diff --git a/Documentation/x86/exception-tables.txt b/Documentation/x86/exception-tables.txt
+index 32901aa36f0a..e396bcd8d830 100644
+--- a/Documentation/x86/exception-tables.txt
++++ b/Documentation/x86/exception-tables.txt
+@@ -290,3 +290,38 @@ Due to the way that the exception table is built and needs to be ordered,
+ only use exceptions for code in the .text section. Any other section
+ will cause the exception table to not be sorted correctly, and the
+ exceptions will fail.
++
++Things changed when 64-bit support was added to x86 Linux. Rather than
++double the size of the exception table by expanding the two entries
++from 32-bits to 64 bits, a clever trick was used to store addresses
++as relative offsets from the table itself. The assembly code changed
++from:
++ .long 1b,3b
++to:
++ .long (from) - .
++ .long (to) - .
++
++and the C-code that uses these values converts back to absolute addresses
++like this:
++
++ ex_insn_addr(const struct exception_table_entry *x)
++ {
++ return (unsigned long)&x->insn + x->insn;
++ }
++
++In v4.6 the exception table entry was expanded with a new field "handler".
++This is also 32-bits wide and contains a third relative function
++pointer which points to one of:
++
++1) int ex_handler_default(const struct exception_table_entry *fixup)
++ This is legacy case that just jumps to the fixup code
++2) int ex_handler_fault(const struct exception_table_entry *fixup)
++ This case provides the fault number of the trap that occurred at
++ entry->insn. It is used to distinguish page faults from machine
++ check.
++3) int ex_handler_ext(const struct exception_table_entry *fixup)
++ This case is used for uaccess_err ... we need to set a flag
++ in the task structure. Before the handler functions existed this
++ case was handled by adding a large offset to the fixup to tag
++ it as special.
++More functions can easily be added.
+diff --git a/Makefile b/Makefile
+index 21f657f2c4e6..aa9fbee620ff 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 35
++SUBLEVEL = 36
+ EXTRAVERSION =
+ NAME = Series 4800
+
+@@ -610,6 +610,8 @@ all: vmlinux
+ include arch/$(SRCARCH)/Makefile
+
+ KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
++KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
++KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
+
+ ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+ KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
+diff --git a/arch/arm/include/asm/kvm_emulate.h b/arch/arm/include/asm/kvm_emulate.h
+index a9c80a2ea1a7..642934a5ae9b 100644
+--- a/arch/arm/include/asm/kvm_emulate.h
++++ b/arch/arm/include/asm/kvm_emulate.h
+@@ -131,6 +131,11 @@ static inline bool kvm_vcpu_dabt_iss1tw(struct kvm_vcpu *vcpu)
+ return kvm_vcpu_get_hsr(vcpu) & HSR_DABT_S1PTW;
+ }
+
++static inline bool kvm_vcpu_dabt_is_cm(struct kvm_vcpu *vcpu)
++{
++ return !!(kvm_vcpu_get_hsr(vcpu) & HSR_DABT_CM);
++}
++
+ /* Get Access Size from a data abort */
+ static inline int kvm_vcpu_dabt_get_as(struct kvm_vcpu *vcpu)
+ {
+diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
+index a33af44230da..4681b6832d9f 100644
+--- a/arch/arm/kvm/mmu.c
++++ b/arch/arm/kvm/mmu.c
+@@ -1435,6 +1435,22 @@ int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ }
+
+ /*
++ * Check for a cache maintenance operation. Since we
++ * ended-up here, we know it is outside of any memory
++ * slot. But we can't find out if that is for a device,
++ * or if the guest is just being stupid. The only thing
++ * we know for sure is that this range cannot be cached.
++ *
++ * So let's assume that the guest is just being
++ * cautious, and skip the instruction.
++ */
++ if (kvm_vcpu_dabt_is_cm(vcpu)) {
++ kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
++ ret = 1;
++ goto out_unlock;
++ }
++
++ /*
+ * The IPA is reported as [MAX:12], so we need to
+ * complement it with the bottom 12 bits from the
+ * faulting VA. This is always 12 bits, irrespective
+diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
+index 3ca894ecf699..3e3c4c7a5082 100644
+--- a/arch/arm64/include/asm/kvm_emulate.h
++++ b/arch/arm64/include/asm/kvm_emulate.h
+@@ -153,11 +153,6 @@ static inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu)
+ return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_ISV);
+ }
+
+-static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu)
+-{
+- return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WNR);
+-}
+-
+ static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu)
+ {
+ return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SSE);
+@@ -178,6 +173,17 @@ static inline bool kvm_vcpu_dabt_iss1tw(const struct kvm_vcpu *vcpu)
+ return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_S1PTW);
+ }
+
++static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu)
++{
++ return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WNR) ||
++ kvm_vcpu_dabt_iss1tw(vcpu); /* AF/DBM update */
++}
++
++static inline bool kvm_vcpu_dabt_is_cm(const struct kvm_vcpu *vcpu)
++{
++ return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_CM);
++}
++
+ static inline int kvm_vcpu_dabt_get_as(const struct kvm_vcpu *vcpu)
+ {
+ return 1 << ((kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SAS) >> ESR_ELx_SAS_SHIFT);
+diff --git a/arch/arm64/include/asm/percpu.h b/arch/arm64/include/asm/percpu.h
+index 4fde8c1df97f..9d096bc89287 100644
+--- a/arch/arm64/include/asm/percpu.h
++++ b/arch/arm64/include/asm/percpu.h
+@@ -52,48 +52,44 @@ static inline unsigned long __percpu_##op(void *ptr, \
+ \
+ switch (size) { \
+ case 1: \
+- do { \
+- asm ("//__per_cpu_" #op "_1\n" \
+- "ldxrb %w[ret], %[ptr]\n" \
++ asm ("//__per_cpu_" #op "_1\n" \
++ "1: ldxrb %w[ret], %[ptr]\n" \
+ #asm_op " %w[ret], %w[ret], %w[val]\n" \
+- "stxrb %w[loop], %w[ret], %[ptr]\n" \
+- : [loop] "=&r" (loop), [ret] "=&r" (ret), \
+- [ptr] "+Q"(*(u8 *)ptr) \
+- : [val] "Ir" (val)); \
+- } while (loop); \
++ " stxrb %w[loop], %w[ret], %[ptr]\n" \
++ " cbnz %w[loop], 1b" \
++ : [loop] "=&r" (loop), [ret] "=&r" (ret), \
++ [ptr] "+Q"(*(u8 *)ptr) \
++ : [val] "Ir" (val)); \
+ break; \
+ case 2: \
+- do { \
+- asm ("//__per_cpu_" #op "_2\n" \
+- "ldxrh %w[ret], %[ptr]\n" \
++ asm ("//__per_cpu_" #op "_2\n" \
++ "1: ldxrh %w[ret], %[ptr]\n" \
+ #asm_op " %w[ret], %w[ret], %w[val]\n" \
+- "stxrh %w[loop], %w[ret], %[ptr]\n" \
+- : [loop] "=&r" (loop), [ret] "=&r" (ret), \
+- [ptr] "+Q"(*(u16 *)ptr) \
+- : [val] "Ir" (val)); \
+- } while (loop); \
++ " stxrh %w[loop], %w[ret], %[ptr]\n" \
++ " cbnz %w[loop], 1b" \
++ : [loop] "=&r" (loop), [ret] "=&r" (ret), \
++ [ptr] "+Q"(*(u16 *)ptr) \
++ : [val] "Ir" (val)); \
+ break; \
+ case 4: \
+- do { \
+- asm ("//__per_cpu_" #op "_4\n" \
+- "ldxr %w[ret], %[ptr]\n" \
++ asm ("//__per_cpu_" #op "_4\n" \
++ "1: ldxr %w[ret], %[ptr]\n" \
+ #asm_op " %w[ret], %w[ret], %w[val]\n" \
+- "stxr %w[loop], %w[ret], %[ptr]\n" \
+- : [loop] "=&r" (loop), [ret] "=&r" (ret), \
+- [ptr] "+Q"(*(u32 *)ptr) \
+- : [val] "Ir" (val)); \
+- } while (loop); \
++ " stxr %w[loop], %w[ret], %[ptr]\n" \
++ " cbnz %w[loop], 1b" \
++ : [loop] "=&r" (loop), [ret] "=&r" (ret), \
++ [ptr] "+Q"(*(u32 *)ptr) \
++ : [val] "Ir" (val)); \
+ break; \
+ case 8: \
+- do { \
+- asm ("//__per_cpu_" #op "_8\n" \
+- "ldxr %[ret], %[ptr]\n" \
++ asm ("//__per_cpu_" #op "_8\n" \
++ "1: ldxr %[ret], %[ptr]\n" \
+ #asm_op " %[ret], %[ret], %[val]\n" \
+- "stxr %w[loop], %[ret], %[ptr]\n" \
+- : [loop] "=&r" (loop), [ret] "=&r" (ret), \
+- [ptr] "+Q"(*(u64 *)ptr) \
+- : [val] "Ir" (val)); \
+- } while (loop); \
++ " stxr %w[loop], %[ret], %[ptr]\n" \
++ " cbnz %w[loop], 1b" \
++ : [loop] "=&r" (loop), [ret] "=&r" (ret), \
++ [ptr] "+Q"(*(u64 *)ptr) \
++ : [val] "Ir" (val)); \
+ break; \
+ default: \
+ BUILD_BUG(); \
+@@ -158,44 +154,40 @@ static inline unsigned long __percpu_xchg(void *ptr, unsigned long val,
+
+ switch (size) {
+ case 1:
+- do {
+- asm ("//__percpu_xchg_1\n"
+- "ldxrb %w[ret], %[ptr]\n"
+- "stxrb %w[loop], %w[val], %[ptr]\n"
+- : [loop] "=&r"(loop), [ret] "=&r"(ret),
+- [ptr] "+Q"(*(u8 *)ptr)
+- : [val] "r" (val));
+- } while (loop);
++ asm ("//__percpu_xchg_1\n"
++ "1: ldxrb %w[ret], %[ptr]\n"
++ " stxrb %w[loop], %w[val], %[ptr]\n"
++ " cbnz %w[loop], 1b"
++ : [loop] "=&r"(loop), [ret] "=&r"(ret),
++ [ptr] "+Q"(*(u8 *)ptr)
++ : [val] "r" (val));
+ break;
+ case 2:
+- do {
+- asm ("//__percpu_xchg_2\n"
+- "ldxrh %w[ret], %[ptr]\n"
+- "stxrh %w[loop], %w[val], %[ptr]\n"
+- : [loop] "=&r"(loop), [ret] "=&r"(ret),
+- [ptr] "+Q"(*(u16 *)ptr)
+- : [val] "r" (val));
+- } while (loop);
++ asm ("//__percpu_xchg_2\n"
++ "1: ldxrh %w[ret], %[ptr]\n"
++ " stxrh %w[loop], %w[val], %[ptr]\n"
++ " cbnz %w[loop], 1b"
++ : [loop] "=&r"(loop), [ret] "=&r"(ret),
++ [ptr] "+Q"(*(u16 *)ptr)
++ : [val] "r" (val));
+ break;
+ case 4:
+- do {
+- asm ("//__percpu_xchg_4\n"
+- "ldxr %w[ret], %[ptr]\n"
+- "stxr %w[loop], %w[val], %[ptr]\n"
+- : [loop] "=&r"(loop), [ret] "=&r"(ret),
+- [ptr] "+Q"(*(u32 *)ptr)
+- : [val] "r" (val));
+- } while (loop);
++ asm ("//__percpu_xchg_4\n"
++ "1: ldxr %w[ret], %[ptr]\n"
++ " stxr %w[loop], %w[val], %[ptr]\n"
++ " cbnz %w[loop], 1b"
++ : [loop] "=&r"(loop), [ret] "=&r"(ret),
++ [ptr] "+Q"(*(u32 *)ptr)
++ : [val] "r" (val));
+ break;
+ case 8:
+- do {
+- asm ("//__percpu_xchg_8\n"
+- "ldxr %[ret], %[ptr]\n"
+- "stxr %w[loop], %[val], %[ptr]\n"
+- : [loop] "=&r"(loop), [ret] "=&r"(ret),
+- [ptr] "+Q"(*(u64 *)ptr)
+- : [val] "r" (val));
+- } while (loop);
++ asm ("//__percpu_xchg_8\n"
++ "1: ldxr %[ret], %[ptr]\n"
++ " stxr %w[loop], %[val], %[ptr]\n"
++ " cbnz %w[loop], 1b"
++ : [loop] "=&r"(loop), [ret] "=&r"(ret),
++ [ptr] "+Q"(*(u64 *)ptr)
++ : [val] "r" (val));
+ break;
+ default:
+ BUILD_BUG();
+diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
+index cc7435c9676e..b346b35f827d 100644
+--- a/arch/arm64/kernel/head.S
++++ b/arch/arm64/kernel/head.S
+@@ -572,8 +572,9 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems
+ b.lt 4f // Skip if no PMU present
+ mrs x0, pmcr_el0 // Disable debug access traps
+ ubfx x0, x0, #11, #5 // to EL2 and allow access to
+- msr mdcr_el2, x0 // all PMU counters from EL1
+ 4:
++ csel x0, xzr, x0, lt // all PMU counters from EL1
++ msr mdcr_el2, x0 // (if they exist)
+
+ /* Stage-2 translation */
+ msr vttbr_el2, xzr
+diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
+index ab518d14b7b0..2ab11c31d77c 100644
+--- a/arch/mips/include/asm/kvm_host.h
++++ b/arch/mips/include/asm/kvm_host.h
+@@ -398,7 +398,10 @@ struct kvm_vcpu_arch {
+ /* Host KSEG0 address of the EI/DI offset */
+ void *kseg0_commpage;
+
+- u32 io_gpr; /* GPR used as IO source/target */
++ /* Resume PC after MMIO completion */
++ unsigned long io_pc;
++ /* GPR used as IO source/target */
++ u32 io_gpr;
+
+ struct hrtimer comparecount_timer;
+ /* Count timer control KVM register */
+@@ -420,8 +423,6 @@ struct kvm_vcpu_arch {
+ /* Bitmask of pending exceptions to be cleared */
+ unsigned long pending_exceptions_clr;
+
+- unsigned long pending_load_cause;
+-
+ /* Save/Restore the entryhi register when are are preempted/scheduled back in */
+ unsigned long preempt_entryhi;
+
+diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
+index d6476d11212e..7f3183494e69 100644
+--- a/arch/mips/kvm/emulate.c
++++ b/arch/mips/kvm/emulate.c
+@@ -752,15 +752,15 @@ enum emulation_result kvm_mips_emul_eret(struct kvm_vcpu *vcpu)
+ struct mips_coproc *cop0 = vcpu->arch.cop0;
+ enum emulation_result er = EMULATE_DONE;
+
+- if (kvm_read_c0_guest_status(cop0) & ST0_EXL) {
++ if (kvm_read_c0_guest_status(cop0) & ST0_ERL) {
++ kvm_clear_c0_guest_status(cop0, ST0_ERL);
++ vcpu->arch.pc = kvm_read_c0_guest_errorepc(cop0);
++ } else if (kvm_read_c0_guest_status(cop0) & ST0_EXL) {
+ kvm_debug("[%#lx] ERET to %#lx\n", vcpu->arch.pc,
+ kvm_read_c0_guest_epc(cop0));
+ kvm_clear_c0_guest_status(cop0, ST0_EXL);
+ vcpu->arch.pc = kvm_read_c0_guest_epc(cop0);
+
+- } else if (kvm_read_c0_guest_status(cop0) & ST0_ERL) {
+- kvm_clear_c0_guest_status(cop0, ST0_ERL);
+- vcpu->arch.pc = kvm_read_c0_guest_errorepc(cop0);
+ } else {
+ kvm_err("[%#lx] ERET when MIPS_SR_EXL|MIPS_SR_ERL == 0\n",
+ vcpu->arch.pc);
+@@ -1430,6 +1430,7 @@ enum emulation_result kvm_mips_emulate_load(uint32_t inst, uint32_t cause,
+ struct kvm_vcpu *vcpu)
+ {
+ enum emulation_result er = EMULATE_DO_MMIO;
++ unsigned long curr_pc;
+ int32_t op, base, rt, offset;
+ uint32_t bytes;
+
+@@ -1438,7 +1439,18 @@ enum emulation_result kvm_mips_emulate_load(uint32_t inst, uint32_t cause,
+ offset = inst & 0xffff;
+ op = (inst >> 26) & 0x3f;
+
+- vcpu->arch.pending_load_cause = cause;
++ /*
++ * Find the resume PC now while we have safe and easy access to the
++ * prior branch instruction, and save it for
++ * kvm_mips_complete_mmio_load() to restore later.
++ */
++ curr_pc = vcpu->arch.pc;
++ er = update_pc(vcpu, cause);
++ if (er == EMULATE_FAIL)
++ return er;
++ vcpu->arch.io_pc = vcpu->arch.pc;
++ vcpu->arch.pc = curr_pc;
++
+ vcpu->arch.io_gpr = rt;
+
+ switch (op) {
+@@ -2418,9 +2430,8 @@ enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
+ goto done;
+ }
+
+- er = update_pc(vcpu, vcpu->arch.pending_load_cause);
+- if (er == EMULATE_FAIL)
+- return er;
++ /* Restore saved resume PC */
++ vcpu->arch.pc = vcpu->arch.io_pc;
+
+ switch (run->mmio.len) {
+ case 4:
+@@ -2442,11 +2453,6 @@ enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
+ break;
+ }
+
+- if (vcpu->arch.pending_load_cause & CAUSEF_BD)
+- kvm_debug("[%#lx] Completing %d byte BD Load to gpr %d (0x%08lx) type %d\n",
+- vcpu->arch.pc, run->mmio.len, vcpu->arch.io_gpr, *gpr,
+- vcpu->mmio_needed);
+-
+ done:
+ return er;
+ }
+diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
+index 099c23616901..8f13c7facdd7 100644
+--- a/arch/parisc/kernel/syscall.S
++++ b/arch/parisc/kernel/syscall.S
+@@ -106,8 +106,6 @@ linux_gateway_entry:
+ mtsp %r0,%sr4 /* get kernel space into sr4 */
+ mtsp %r0,%sr5 /* get kernel space into sr5 */
+ mtsp %r0,%sr6 /* get kernel space into sr6 */
+- mfsp %sr7,%r1 /* save user sr7 */
+- mtsp %r1,%sr3 /* and store it in sr3 */
+
+ #ifdef CONFIG_64BIT
+ /* for now we can *always* set the W bit on entry to the syscall
+@@ -133,6 +131,14 @@ linux_gateway_entry:
+ depdi 0, 31, 32, %r21
+ 1:
+ #endif
++
++ /* We use a rsm/ssm pair to prevent sr3 from being clobbered
++ * by external interrupts.
++ */
++ mfsp %sr7,%r1 /* save user sr7 */
++ rsm PSW_SM_I, %r0 /* disable interrupts */
++ mtsp %r1,%sr3 /* and store it in sr3 */
++
+ mfctl %cr30,%r1
+ xor %r1,%r30,%r30 /* ye olde xor trick */
+ xor %r1,%r30,%r1
+@@ -147,6 +153,7 @@ linux_gateway_entry:
+ */
+
+ mtsp %r0,%sr7 /* get kernel space into sr7 */
++ ssm PSW_SM_I, %r0 /* enable interrupts */
+ STREGM %r1,FRAME_SIZE(%r30) /* save r1 (usp) here for now */
+ mfctl %cr30,%r1 /* get task ptr in %r1 */
+ LDREG TI_TASK(%r1),%r1
+diff --git a/arch/powerpc/kernel/idle_power7.S b/arch/powerpc/kernel/idle_power7.S
+index 112ccf497562..73f638789a38 100644
+--- a/arch/powerpc/kernel/idle_power7.S
++++ b/arch/powerpc/kernel/idle_power7.S
+@@ -44,7 +44,7 @@
+ std r0,0(r1); \
+ ptesync; \
+ ld r0,0(r1); \
+-1: cmp cr0,r0,r0; \
++1: cmpd cr0,r0,r0; \
+ bne 1b; \
+ IDLE_INST; \
+ b .
+diff --git a/arch/powerpc/mm/copro_fault.c b/arch/powerpc/mm/copro_fault.c
+index f031a47d7701..6fb1b3774b11 100644
+--- a/arch/powerpc/mm/copro_fault.c
++++ b/arch/powerpc/mm/copro_fault.c
+@@ -106,6 +106,8 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb)
+ switch (REGION_ID(ea)) {
+ case USER_REGION_ID:
+ pr_devel("%s: 0x%llx -- USER_REGION_ID\n", __func__, ea);
++ if (mm == NULL)
++ return 1;
+ psize = get_slice_psize(mm, ea);
+ ssize = user_segment_size(ea);
+ vsid = get_vsid(mm->context.id, ea, ssize);
+diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
+index 7730c1c5c83a..e2015452177d 100644
+--- a/arch/x86/include/asm/asm.h
++++ b/arch/x86/include/asm/asm.h
+@@ -44,19 +44,22 @@
+
+ /* Exception table entry */
+ #ifdef __ASSEMBLY__
+-# define _ASM_EXTABLE(from,to) \
++# define _ASM_EXTABLE_HANDLE(from, to, handler) \
+ .pushsection "__ex_table","a" ; \
+- .balign 8 ; \
++ .balign 4 ; \
+ .long (from) - . ; \
+ .long (to) - . ; \
++ .long (handler) - . ; \
+ .popsection
+
+-# define _ASM_EXTABLE_EX(from,to) \
+- .pushsection "__ex_table","a" ; \
+- .balign 8 ; \
+- .long (from) - . ; \
+- .long (to) - . + 0x7ffffff0 ; \
+- .popsection
++# define _ASM_EXTABLE(from, to) \
++ _ASM_EXTABLE_HANDLE(from, to, ex_handler_default)
++
++# define _ASM_EXTABLE_FAULT(from, to) \
++ _ASM_EXTABLE_HANDLE(from, to, ex_handler_fault)
++
++# define _ASM_EXTABLE_EX(from, to) \
++ _ASM_EXTABLE_HANDLE(from, to, ex_handler_ext)
+
+ # define _ASM_NOKPROBE(entry) \
+ .pushsection "_kprobe_blacklist","aw" ; \
+@@ -64,19 +67,24 @@
+ _ASM_PTR (entry); \
+ .popsection
+ #else
+-# define _ASM_EXTABLE(from,to) \
++# define _EXPAND_EXTABLE_HANDLE(x) #x
++# define _ASM_EXTABLE_HANDLE(from, to, handler) \
+ " .pushsection \"__ex_table\",\"a\"\n" \
+- " .balign 8\n" \
++ " .balign 4\n" \
+ " .long (" #from ") - .\n" \
+ " .long (" #to ") - .\n" \
++ " .long (" _EXPAND_EXTABLE_HANDLE(handler) ") - .\n" \
+ " .popsection\n"
+
+-# define _ASM_EXTABLE_EX(from,to) \
+- " .pushsection \"__ex_table\",\"a\"\n" \
+- " .balign 8\n" \
+- " .long (" #from ") - .\n" \
+- " .long (" #to ") - . + 0x7ffffff0\n" \
+- " .popsection\n"
++# define _ASM_EXTABLE(from, to) \
++ _ASM_EXTABLE_HANDLE(from, to, ex_handler_default)
++
++# define _ASM_EXTABLE_FAULT(from, to) \
++ _ASM_EXTABLE_HANDLE(from, to, ex_handler_fault)
++
++# define _ASM_EXTABLE_EX(from, to) \
++ _ASM_EXTABLE_HANDLE(from, to, ex_handler_ext)
++
+ /* For C file, we already have NOKPROBE_SYMBOL macro */
+ #endif
+
+diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
+index d081e7e42fb3..81782dc54193 100644
+--- a/arch/x86/include/asm/uaccess.h
++++ b/arch/x86/include/asm/uaccess.h
+@@ -89,12 +89,11 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un
+ likely(!__range_not_ok(addr, size, user_addr_max()))
+
+ /*
+- * The exception table consists of pairs of addresses relative to the
+- * exception table enty itself: the first is the address of an
+- * instruction that is allowed to fault, and the second is the address
+- * at which the program should continue. No registers are modified,
+- * so it is entirely up to the continuation code to figure out what to
+- * do.
++ * The exception table consists of triples of addresses relative to the
++ * exception table entry itself. The first address is of an instruction
++ * that is allowed to fault, the second is the target at which the program
++ * should continue. The third is a handler function to deal with the fault
++ * caused by the instruction in the first field.
+ *
+ * All the routines below use bits of fixup code that are out of line
+ * with the main instruction path. This means when everything is well,
+@@ -103,13 +102,14 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un
+ */
+
+ struct exception_table_entry {
+- int insn, fixup;
++ int insn, fixup, handler;
+ };
+ /* This is not the generic standard exception_table_entry format */
+ #define ARCH_HAS_SORT_EXTABLE
+ #define ARCH_HAS_SEARCH_EXTABLE
+
+-extern int fixup_exception(struct pt_regs *regs);
++extern int fixup_exception(struct pt_regs *regs, int trapnr);
++extern bool ex_has_fault_handler(unsigned long ip);
+ extern int early_fixup_exception(unsigned long *ip);
+
+ /*
+diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
+index 023c442c33bb..e1d1f6cbaf11 100644
+--- a/arch/x86/kernel/kprobes/core.c
++++ b/arch/x86/kernel/kprobes/core.c
+@@ -1000,7 +1000,7 @@ int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+ * In case the user-specified fault handler returned
+ * zero, try to fix up.
+ */
+- if (fixup_exception(regs))
++ if (fixup_exception(regs, trapnr))
+ return 1;
+
+ /*
+diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
+index 324ab5247687..020248f2cec4 100644
+--- a/arch/x86/kernel/traps.c
++++ b/arch/x86/kernel/traps.c
+@@ -208,7 +208,7 @@ do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
+ }
+
+ if (!user_mode(regs)) {
+- if (!fixup_exception(regs)) {
++ if (!fixup_exception(regs, trapnr)) {
+ tsk->thread.error_code = error_code;
+ tsk->thread.trap_nr = trapnr;
+ die(str, regs, error_code);
+@@ -469,7 +469,7 @@ do_general_protection(struct pt_regs *regs, long error_code)
+
+ tsk = current;
+ if (!user_mode(regs)) {
+- if (fixup_exception(regs))
++ if (fixup_exception(regs, X86_TRAP_GP))
+ goto exit;
+
+ tsk->thread.error_code = error_code;
+@@ -720,7 +720,7 @@ static void math_error(struct pt_regs *regs, int error_code, int trapnr)
+
+ if (!user_mode(regs))
+ {
+- if (!fixup_exception(regs)) {
++ if (!fixup_exception(regs, trapnr)) {
+ task->thread.error_code = error_code;
+ task->thread.trap_nr = trapnr;
+ die(str, regs, error_code);
+diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
+index 28146f03c514..74c3285dfdcf 100644
+--- a/arch/x86/kvm/ioapic.c
++++ b/arch/x86/kvm/ioapic.c
+@@ -596,7 +596,7 @@ static void kvm_ioapic_reset(struct kvm_ioapic *ioapic)
+ ioapic->irr = 0;
+ ioapic->irr_delivered = 0;
+ ioapic->id = 0;
+- memset(ioapic->irq_eoi, 0x00, IOAPIC_NUM_PINS);
++ memset(ioapic->irq_eoi, 0x00, sizeof(ioapic->irq_eoi));
+ rtc_irq_eoi_tracking_reset(ioapic);
+ update_handled_vectors(ioapic);
+ }
+diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c
+index 903ec1e9c326..9dd7e4b7fcde 100644
+--- a/arch/x86/mm/extable.c
++++ b/arch/x86/mm/extable.c
+@@ -3,6 +3,9 @@
+ #include <linux/sort.h>
+ #include <asm/uaccess.h>
+
++typedef bool (*ex_handler_t)(const struct exception_table_entry *,
++ struct pt_regs *, int);
++
+ static inline unsigned long
+ ex_insn_addr(const struct exception_table_entry *x)
+ {
+@@ -13,11 +16,56 @@ ex_fixup_addr(const struct exception_table_entry *x)
+ {
+ return (unsigned long)&x->fixup + x->fixup;
+ }
++static inline ex_handler_t
++ex_fixup_handler(const struct exception_table_entry *x)
++{
++ return (ex_handler_t)((unsigned long)&x->handler + x->handler);
++}
+
+-int fixup_exception(struct pt_regs *regs)
++bool ex_handler_default(const struct exception_table_entry *fixup,
++ struct pt_regs *regs, int trapnr)
+ {
+- const struct exception_table_entry *fixup;
+- unsigned long new_ip;
++ regs->ip = ex_fixup_addr(fixup);
++ return true;
++}
++EXPORT_SYMBOL(ex_handler_default);
++
++bool ex_handler_fault(const struct exception_table_entry *fixup,
++ struct pt_regs *regs, int trapnr)
++{
++ regs->ip = ex_fixup_addr(fixup);
++ regs->ax = trapnr;
++ return true;
++}
++EXPORT_SYMBOL_GPL(ex_handler_fault);
++
++bool ex_handler_ext(const struct exception_table_entry *fixup,
++ struct pt_regs *regs, int trapnr)
++{
++ /* Special hack for uaccess_err */
++ current_thread_info()->uaccess_err = 1;
++ regs->ip = ex_fixup_addr(fixup);
++ return true;
++}
++EXPORT_SYMBOL(ex_handler_ext);
++
++bool ex_has_fault_handler(unsigned long ip)
++{
++ const struct exception_table_entry *e;
++ ex_handler_t handler;
++
++ e = search_exception_tables(ip);
++ if (!e)
++ return false;
++ handler = ex_fixup_handler(e);
++
++ return handler == ex_handler_fault;
++}
++
++int fixup_exception(struct pt_regs *regs, int trapnr)
++{
++ const struct exception_table_entry *e;
++ ex_handler_t handler;
+
+ #ifdef CONFIG_PNPBIOS
+ if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) {
+@@ -33,42 +81,34 @@ int fixup_exception(struct pt_regs *regs)
+ }
+ #endif
+
+- fixup = search_exception_tables(regs->ip);
+- if (fixup) {
+- new_ip = ex_fixup_addr(fixup);
+-
+- if (fixup->fixup - fixup->insn >= 0x7ffffff0 - 4) {
+- /* Special hack for uaccess_err */
+- current_thread_info()->uaccess_err = 1;
+- new_ip -= 0x7ffffff0;
+- }
+- regs->ip = new_ip;
+- return 1;
+- }
++ e = search_exception_tables(regs->ip);
++ if (!e)
++ return 0;
+
+- return 0;
++ handler = ex_fixup_handler(e);
++ return handler(e, regs, trapnr);
+ }
+
+ /* Restricted version used during very early boot */
+ int __init early_fixup_exception(unsigned long *ip)
+ {
+- const struct exception_table_entry *fixup;
++ const struct exception_table_entry *e;
+ unsigned long new_ip;
++ ex_handler_t handler;
+
+- fixup = search_exception_tables(*ip);
+- if (fixup) {
+- new_ip = ex_fixup_addr(fixup);
++ e = search_exception_tables(*ip);
++ if (!e)
++ return 0;
+
+- if (fixup->fixup - fixup->insn >= 0x7ffffff0 - 4) {
+- /* uaccess handling not supported during early boot */
+- return 0;
+- }
++ new_ip = ex_fixup_addr(e);
++ handler = ex_fixup_handler(e);
+
+- *ip = new_ip;
+- return 1;
+- }
++ /* special handling not supported during early boot */
++ if (handler != ex_handler_default)
++ return 0;
+
+- return 0;
++ *ip = new_ip;
++ return 1;
+ }
+
+ /*
+@@ -133,6 +173,8 @@ void sort_extable(struct exception_table_entry *start,
+ i += 4;
+ p->fixup += i;
+ i += 4;
++ p->handler += i;
++ i += 4;
+ }
+
+ sort(start, finish - start, sizeof(struct exception_table_entry),
+@@ -145,6 +187,8 @@ void sort_extable(struct exception_table_entry *start,
+ i += 4;
+ p->fixup -= i;
+ i += 4;
++ p->handler -= i;
++ i += 4;
+ }
+ }
+
+diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
+index 62855ac37ab7..27bc31f0da52 100644
+--- a/arch/x86/mm/fault.c
++++ b/arch/x86/mm/fault.c
+@@ -659,7 +659,7 @@ no_context(struct pt_regs *regs, unsigned long error_code,
+ int sig;
+
+ /* Are we prepared to handle this kernel fault? */
+- if (fixup_exception(regs)) {
++ if (fixup_exception(regs, X86_TRAP_PF)) {
+ /*
+ * Any interrupt that takes a fault gets the fixup. This makes
+ * the below recursive fault logic only apply to a faults from
+diff --git a/drivers/android/binder.c b/drivers/android/binder.c
+index f1a26d937d98..6f086415727c 100644
+--- a/drivers/android/binder.c
++++ b/drivers/android/binder.c
+@@ -1003,7 +1003,7 @@ static int binder_dec_node(struct binder_node *node, int strong, int internal)
+
+
+ static struct binder_ref *binder_get_ref(struct binder_proc *proc,
+- uint32_t desc)
++ u32 desc, bool need_strong_ref)
+ {
+ struct rb_node *n = proc->refs_by_desc.rb_node;
+ struct binder_ref *ref;
+@@ -1011,12 +1011,16 @@ static struct binder_ref *binder_get_ref(struct binder_proc *proc,
+ while (n) {
+ ref = rb_entry(n, struct binder_ref, rb_node_desc);
+
+- if (desc < ref->desc)
++ if (desc < ref->desc) {
+ n = n->rb_left;
+- else if (desc > ref->desc)
++ } else if (desc > ref->desc) {
+ n = n->rb_right;
+- else
++ } else if (need_strong_ref && !ref->strong) {
++ binder_user_error("tried to use weak ref as strong ref\n");
++ return NULL;
++ } else {
+ return ref;
++ }
+ }
+ return NULL;
+ }
+@@ -1286,7 +1290,10 @@ static void binder_transaction_buffer_release(struct binder_proc *proc,
+ } break;
+ case BINDER_TYPE_HANDLE:
+ case BINDER_TYPE_WEAK_HANDLE: {
+- struct binder_ref *ref = binder_get_ref(proc, fp->handle);
++ struct binder_ref *ref;
++
++ ref = binder_get_ref(proc, fp->handle,
++ fp->type == BINDER_TYPE_HANDLE);
+
+ if (ref == NULL) {
+ pr_err("transaction release %d bad handle %d\n",
+@@ -1380,7 +1387,7 @@ static void binder_transaction(struct binder_proc *proc,
+ if (tr->target.handle) {
+ struct binder_ref *ref;
+
+- ref = binder_get_ref(proc, tr->target.handle);
++ ref = binder_get_ref(proc, tr->target.handle, true);
+ if (ref == NULL) {
+ binder_user_error("%d:%d got transaction to invalid handle\n",
+ proc->pid, thread->pid);
+@@ -1571,7 +1578,9 @@ static void binder_transaction(struct binder_proc *proc,
+ fp->type = BINDER_TYPE_HANDLE;
+ else
+ fp->type = BINDER_TYPE_WEAK_HANDLE;
++ fp->binder = 0;
+ fp->handle = ref->desc;
++ fp->cookie = 0;
+ binder_inc_ref(ref, fp->type == BINDER_TYPE_HANDLE,
+ &thread->todo);
+
+@@ -1583,7 +1592,10 @@ static void binder_transaction(struct binder_proc *proc,
+ } break;
+ case BINDER_TYPE_HANDLE:
+ case BINDER_TYPE_WEAK_HANDLE: {
+- struct binder_ref *ref = binder_get_ref(proc, fp->handle);
++ struct binder_ref *ref;
++
++ ref = binder_get_ref(proc, fp->handle,
++ fp->type == BINDER_TYPE_HANDLE);
+
+ if (ref == NULL) {
+ binder_user_error("%d:%d got transaction with invalid handle, %d\n",
+@@ -1618,7 +1630,9 @@ static void binder_transaction(struct binder_proc *proc,
+ return_error = BR_FAILED_REPLY;
+ goto err_binder_get_ref_for_node_failed;
+ }
++ fp->binder = 0;
+ fp->handle = new_ref->desc;
++ fp->cookie = 0;
+ binder_inc_ref(new_ref, fp->type == BINDER_TYPE_HANDLE, NULL);
+ trace_binder_transaction_ref_to_ref(t, ref,
+ new_ref);
+@@ -1672,6 +1686,7 @@ static void binder_transaction(struct binder_proc *proc,
+ binder_debug(BINDER_DEBUG_TRANSACTION,
+ " fd %d -> %d\n", fp->handle, target_fd);
+ /* TODO: fput? */
++ fp->binder = 0;
+ fp->handle = target_fd;
+ } break;
+
+@@ -1794,7 +1809,9 @@ static int binder_thread_write(struct binder_proc *proc,
+ ref->desc);
+ }
+ } else
+- ref = binder_get_ref(proc, target);
++ ref = binder_get_ref(proc, target,
++ cmd == BC_ACQUIRE ||
++ cmd == BC_RELEASE);
+ if (ref == NULL) {
+ binder_user_error("%d:%d refcount change on invalid ref %d\n",
+ proc->pid, thread->pid, target);
+@@ -1990,7 +2007,7 @@ static int binder_thread_write(struct binder_proc *proc,
+ if (get_user(cookie, (binder_uintptr_t __user *)ptr))
+ return -EFAULT;
+ ptr += sizeof(binder_uintptr_t);
+- ref = binder_get_ref(proc, target);
++ ref = binder_get_ref(proc, target, false);
+ if (ref == NULL) {
+ binder_user_error("%d:%d %s invalid ref %d\n",
+ proc->pid, thread->pid,
+diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
+index 50754d203310..8cc67132d55d 100644
+--- a/drivers/char/virtio_console.c
++++ b/drivers/char/virtio_console.c
+@@ -1533,19 +1533,29 @@ static void remove_port_data(struct port *port)
+ spin_lock_irq(&port->inbuf_lock);
+ /* Remove unused data this port might have received. */
+ discard_port_data(port);
++ spin_unlock_irq(&port->inbuf_lock);
+
+ /* Remove buffers we queued up for the Host to send us data in. */
+- while ((buf = virtqueue_detach_unused_buf(port->in_vq)))
+- free_buf(buf, true);
+- spin_unlock_irq(&port->inbuf_lock);
++ do {
++ spin_lock_irq(&port->inbuf_lock);
++ buf = virtqueue_detach_unused_buf(port->in_vq);
++ spin_unlock_irq(&port->inbuf_lock);
++ if (buf)
++ free_buf(buf, true);
++ } while (buf);
+
+ spin_lock_irq(&port->outvq_lock);
+ reclaim_consumed_buffers(port);
++ spin_unlock_irq(&port->outvq_lock);
+
+ /* Free pending buffers from the out-queue. */
+- while ((buf = virtqueue_detach_unused_buf(port->out_vq)))
+- free_buf(buf, true);
+- spin_unlock_irq(&port->outvq_lock);
++ do {
++ spin_lock_irq(&port->outvq_lock);
++ buf = virtqueue_detach_unused_buf(port->out_vq);
++ spin_unlock_irq(&port->outvq_lock);
++ if (buf)
++ free_buf(buf, true);
++ } while (buf);
+ }
+
+ /*
+diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
+index f4ea80d602f7..b9d2f76a0cf7 100644
+--- a/drivers/firewire/net.c
++++ b/drivers/firewire/net.c
+@@ -73,13 +73,13 @@ struct rfc2734_header {
+
+ #define fwnet_get_hdr_lf(h) (((h)->w0 & 0xc0000000) >> 30)
+ #define fwnet_get_hdr_ether_type(h) (((h)->w0 & 0x0000ffff))
+-#define fwnet_get_hdr_dg_size(h) (((h)->w0 & 0x0fff0000) >> 16)
++#define fwnet_get_hdr_dg_size(h) ((((h)->w0 & 0x0fff0000) >> 16) + 1)
+ #define fwnet_get_hdr_fg_off(h) (((h)->w0 & 0x00000fff))
+ #define fwnet_get_hdr_dgl(h) (((h)->w1 & 0xffff0000) >> 16)
+
+-#define fwnet_set_hdr_lf(lf) ((lf) << 30)
++#define fwnet_set_hdr_lf(lf) ((lf) << 30)
+ #define fwnet_set_hdr_ether_type(et) (et)
+-#define fwnet_set_hdr_dg_size(dgs) ((dgs) << 16)
++#define fwnet_set_hdr_dg_size(dgs) (((dgs) - 1) << 16)
+ #define fwnet_set_hdr_fg_off(fgo) (fgo)
+
+ #define fwnet_set_hdr_dgl(dgl) ((dgl) << 16)
+@@ -578,6 +578,9 @@ static int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len,
+ int retval;
+ u16 ether_type;
+
++ if (len <= RFC2374_UNFRAG_HDR_SIZE)
++ return 0;
++
+ hdr.w0 = be32_to_cpu(buf[0]);
+ lf = fwnet_get_hdr_lf(&hdr);
+ if (lf == RFC2374_HDR_UNFRAG) {
+@@ -602,7 +605,12 @@ static int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len,
+ return fwnet_finish_incoming_packet(net, skb, source_node_id,
+ is_broadcast, ether_type);
+ }
++
+ /* A datagram fragment has been received, now the fun begins. */
++
++ if (len <= RFC2374_FRAG_HDR_SIZE)
++ return 0;
++
+ hdr.w1 = ntohl(buf[1]);
+ buf += 2;
+ len -= RFC2374_FRAG_HDR_SIZE;
+@@ -614,7 +622,10 @@ static int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len,
+ fg_off = fwnet_get_hdr_fg_off(&hdr);
+ }
+ datagram_label = fwnet_get_hdr_dgl(&hdr);
+- dg_size = fwnet_get_hdr_dg_size(&hdr); /* ??? + 1 */
++ dg_size = fwnet_get_hdr_dg_size(&hdr);
++
++ if (fg_off + len > dg_size)
++ return 0;
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+@@ -722,6 +733,22 @@ static void fwnet_receive_packet(struct fw_card *card, struct fw_request *r,
+ fw_send_response(card, r, rcode);
+ }
+
++static int gasp_source_id(__be32 *p)
++{
++ return be32_to_cpu(p[0]) >> 16;
++}
++
++static u32 gasp_specifier_id(__be32 *p)
++{
++ return (be32_to_cpu(p[0]) & 0xffff) << 8 |
++ (be32_to_cpu(p[1]) & 0xff000000) >> 24;
++}
++
++static u32 gasp_version(__be32 *p)
++{
++ return be32_to_cpu(p[1]) & 0xffffff;
++}
++
+ static void fwnet_receive_broadcast(struct fw_iso_context *context,
+ u32 cycle, size_t header_length, void *header, void *data)
+ {
+@@ -731,9 +758,6 @@ static void fwnet_receive_broadcast(struct fw_iso_context *context,
+ __be32 *buf_ptr;
+ int retval;
+ u32 length;
+- u16 source_node_id;
+- u32 specifier_id;
+- u32 ver;
+ unsigned long offset;
+ unsigned long flags;
+
+@@ -750,22 +774,17 @@ static void fwnet_receive_broadcast(struct fw_iso_context *context,
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+- specifier_id = (be32_to_cpu(buf_ptr[0]) & 0xffff) << 8
+- | (be32_to_cpu(buf_ptr[1]) & 0xff000000) >> 24;
+- ver = be32_to_cpu(buf_ptr[1]) & 0xffffff;
+- source_node_id = be32_to_cpu(buf_ptr[0]) >> 16;
+-
+- if (specifier_id == IANA_SPECIFIER_ID &&
+- (ver == RFC2734_SW_VERSION
++ if (length > IEEE1394_GASP_HDR_SIZE &&
++ gasp_specifier_id(buf_ptr) == IANA_SPECIFIER_ID &&
++ (gasp_version(buf_ptr) == RFC2734_SW_VERSION
+ #if IS_ENABLED(CONFIG_IPV6)
+- || ver == RFC3146_SW_VERSION
++ || gasp_version(buf_ptr) == RFC3146_SW_VERSION
+ #endif
+- )) {
+- buf_ptr += 2;
+- length -= IEEE1394_GASP_HDR_SIZE;
+- fwnet_incoming_packet(dev, buf_ptr, length, source_node_id,
++ ))
++ fwnet_incoming_packet(dev, buf_ptr + 2,
++ length - IEEE1394_GASP_HDR_SIZE,
++ gasp_source_id(buf_ptr),
+ context->card->generation, true);
+- }
+
+ packet.payload_length = dev->rcv_buffer_size;
+ packet.interrupt = 1;
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 52dea773bb1b..ef773bf58a25 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -909,6 +909,7 @@ static void drm_dp_destroy_port(struct kref *kref)
+ /* no need to clean up vcpi
+ * as if we have no connector we never setup a vcpi */
+ drm_dp_port_teardown_pdt(port, port->pdt);
++ port->pdt = DP_PEER_DEVICE_NONE;
+ }
+ kfree(port);
+ }
+@@ -1155,7 +1156,9 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
+ drm_dp_put_port(port);
+ goto out;
+ }
+- if (port->port_num >= 8) {
++ if ((port->pdt == DP_PEER_DEVICE_DP_LEGACY_CONV ||
++ port->pdt == DP_PEER_DEVICE_SST_SINK) &&
++ port->port_num >= DP_MST_LOGICAL_PORT_0) {
+ port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc);
+ }
+ }
+@@ -2860,6 +2863,7 @@ static void drm_dp_destroy_connector_work(struct work_struct *work)
+ mgr->cbs->destroy_connector(mgr, port->connector);
+
+ drm_dp_port_teardown_pdt(port, port->pdt);
++ port->pdt = DP_PEER_DEVICE_NONE;
+
+ if (!port->input && port->vcpi.vcpi > 0) {
+ drm_dp_mst_reset_vcpi_slots(mgr, port);
+diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
+index 64d3a771920d..fc305ee22471 100644
+--- a/drivers/gpu/drm/radeon/ni.c
++++ b/drivers/gpu/drm/radeon/ni.c
+@@ -1371,9 +1371,7 @@ static void cayman_pcie_gart_fini(struct radeon_device *rdev)
+ void cayman_cp_int_cntl_setup(struct radeon_device *rdev,
+ int ring, u32 cp_int_cntl)
+ {
+- u32 srbm_gfx_cntl = RREG32(SRBM_GFX_CNTL) & ~3;
+-
+- WREG32(SRBM_GFX_CNTL, srbm_gfx_cntl | (ring & 3));
++ WREG32(SRBM_GFX_CNTL, RINGID(ring));
+ WREG32(CP_INT_CNTL, cp_int_cntl);
+ }
+
+diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c
+index fa2154493cf1..470af4aa4a6a 100644
+--- a/drivers/gpu/drm/radeon/r600_dpm.c
++++ b/drivers/gpu/drm/radeon/r600_dpm.c
+@@ -156,19 +156,20 @@ u32 r600_dpm_get_vblank_time(struct radeon_device *rdev)
+ struct drm_device *dev = rdev->ddev;
+ struct drm_crtc *crtc;
+ struct radeon_crtc *radeon_crtc;
+- u32 line_time_us, vblank_lines;
++ u32 vblank_in_pixels;
+ u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
+
+ if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ radeon_crtc = to_radeon_crtc(crtc);
+ if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
+- line_time_us = (radeon_crtc->hw_mode.crtc_htotal * 1000) /
+- radeon_crtc->hw_mode.clock;
+- vblank_lines = radeon_crtc->hw_mode.crtc_vblank_end -
+- radeon_crtc->hw_mode.crtc_vdisplay +
+- (radeon_crtc->v_border * 2);
+- vblank_time_us = vblank_lines * line_time_us;
++ vblank_in_pixels =
++ radeon_crtc->hw_mode.crtc_htotal *
++ (radeon_crtc->hw_mode.crtc_vblank_end -
++ radeon_crtc->hw_mode.crtc_vdisplay +
++ (radeon_crtc->v_border * 2));
++
++ vblank_time_us = vblank_in_pixels * 1000 / radeon_crtc->hw_mode.clock;
+ break;
+ }
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_dp_auxch.c b/drivers/gpu/drm/radeon/radeon_dp_auxch.c
+index db64e0062689..3b0c229d7dcd 100644
+--- a/drivers/gpu/drm/radeon/radeon_dp_auxch.c
++++ b/drivers/gpu/drm/radeon/radeon_dp_auxch.c
+@@ -105,7 +105,7 @@ radeon_dp_aux_transfer_native(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg
+
+ tmp &= AUX_HPD_SEL(0x7);
+ tmp |= AUX_HPD_SEL(chan->rec.hpd);
+- tmp |= AUX_EN | AUX_LS_READ_EN | AUX_HPD_DISCON(0x1);
++ tmp |= AUX_EN | AUX_LS_READ_EN;
+
+ WREG32(AUX_CONTROL + aux_offset[instance], tmp);
+
+diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
+index f666277a8993..a808ba001ee7 100644
+--- a/drivers/gpu/drm/radeon/si_dpm.c
++++ b/drivers/gpu/drm/radeon/si_dpm.c
+@@ -2948,6 +2948,49 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
+ int i;
+ struct si_dpm_quirk *p = si_dpm_quirk_list;
+
++ /* limit all SI kickers */
++ if (rdev->family == CHIP_PITCAIRN) {
++ if ((rdev->pdev->revision == 0x81) ||
++ (rdev->pdev->device == 0x6810) ||
++ (rdev->pdev->device == 0x6811) ||
++ (rdev->pdev->device == 0x6816) ||
++ (rdev->pdev->device == 0x6817) ||
++ (rdev->pdev->device == 0x6806))
++ max_mclk = 120000;
++ } else if (rdev->family == CHIP_VERDE) {
++ if ((rdev->pdev->revision == 0x81) ||
++ (rdev->pdev->revision == 0x83) ||
++ (rdev->pdev->revision == 0x87) ||
++ (rdev->pdev->device == 0x6820) ||
++ (rdev->pdev->device == 0x6821) ||
++ (rdev->pdev->device == 0x6822) ||
++ (rdev->pdev->device == 0x6823) ||
++ (rdev->pdev->device == 0x682A) ||
++ (rdev->pdev->device == 0x682B)) {
++ max_sclk = 75000;
++ max_mclk = 80000;
++ }
++ } else if (rdev->family == CHIP_OLAND) {
++ if ((rdev->pdev->revision == 0xC7) ||
++ (rdev->pdev->revision == 0x80) ||
++ (rdev->pdev->revision == 0x81) ||
++ (rdev->pdev->revision == 0x83) ||
++ (rdev->pdev->device == 0x6604) ||
++ (rdev->pdev->device == 0x6605)) {
++ max_sclk = 75000;
++ max_mclk = 80000;
++ }
++ } else if (rdev->family == CHIP_HAINAN) {
++ if ((rdev->pdev->revision == 0x81) ||
++ (rdev->pdev->revision == 0x83) ||
++ (rdev->pdev->revision == 0xC3) ||
++ (rdev->pdev->device == 0x6664) ||
++ (rdev->pdev->device == 0x6665) ||
++ (rdev->pdev->device == 0x6667)) {
++ max_sclk = 75000;
++ max_mclk = 80000;
++ }
++ }
+ /* Apply dpm quirks */
+ while (p && p->chip_device != 0) {
+ if (rdev->pdev->vendor == p->chip_vendor &&
+@@ -2960,10 +3003,6 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
+ }
+ ++p;
+ }
+- /* limit mclk on all R7 370 parts for stability */
+- if (rdev->pdev->device == 0x6811 &&
+- rdev->pdev->revision == 0x81)
+- max_mclk = 120000;
+
+ if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
+ ni_dpm_vblank_too_short(rdev))
+diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
+index 7994ec2e4151..41f5896224bd 100644
+--- a/drivers/hv/hv_util.c
++++ b/drivers/hv/hv_util.c
+@@ -283,10 +283,14 @@ static void heartbeat_onchannelcallback(void *context)
+ u8 *hbeat_txf_buf = util_heartbeat.recv_buffer;
+ struct icmsg_negotiate *negop = NULL;
+
+- vmbus_recvpacket(channel, hbeat_txf_buf,
+- PAGE_SIZE, &recvlen, &requestid);
++ while (1) {
++
++ vmbus_recvpacket(channel, hbeat_txf_buf,
++ PAGE_SIZE, &recvlen, &requestid);
++
++ if (!recvlen)
++ break;
+
+- if (recvlen > 0) {
+ icmsghdrp = (struct icmsg_hdr *)&hbeat_txf_buf[
+ sizeof(struct vmbuspipe_hdr)];
+
+diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
+index 68f5f4a0f1e7..418701947800 100644
+--- a/drivers/input/serio/i8042-x86ia64io.h
++++ b/drivers/input/serio/i8042-x86ia64io.h
+@@ -793,6 +793,13 @@ static const struct dmi_system_id __initconst i8042_dmi_kbdreset_table[] = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "P34"),
+ },
+ },
++ {
++ /* Schenker XMG C504 - Elantech touchpad */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "XMG"),
++ DMI_MATCH(DMI_PRODUCT_NAME, "C504"),
++ },
++ },
+ { }
+ };
+
+diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
+index 1dbae580e8ca..f1b15a0b3774 100644
+--- a/drivers/irqchip/irq-gic-v3.c
++++ b/drivers/irqchip/irq-gic-v3.c
+@@ -180,7 +180,7 @@ static void gic_enable_redist(bool enable)
+ return; /* No PM support in this redistributor */
+ }
+
+- while (count--) {
++ while (--count) {
+ val = readl_relaxed(rbase + GICR_WAKER);
+ if (enable ^ (val & GICR_WAKER_ChildrenAsleep))
+ break;
+diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
+index e411ccba0af6..94533bdcbef2 100644
+--- a/drivers/md/dm-table.c
++++ b/drivers/md/dm-table.c
+@@ -700,37 +700,32 @@ int dm_table_add_target(struct dm_table *t, const char *type,
+
+ tgt->type = dm_get_target_type(type);
+ if (!tgt->type) {
+- DMERR("%s: %s: unknown target type", dm_device_name(t->md),
+- type);
++ DMERR("%s: %s: unknown target type", dm_device_name(t->md), type);
+ return -EINVAL;
+ }
+
+ if (dm_target_needs_singleton(tgt->type)) {
+ if (t->num_targets) {
+- DMERR("%s: target type %s must appear alone in table",
+- dm_device_name(t->md), type);
+- return -EINVAL;
++ tgt->error = "singleton target type must appear alone in table";
++ goto bad;
+ }
+ t->singleton = 1;
+ }
+
+ if (dm_target_always_writeable(tgt->type) && !(t->mode & FMODE_WRITE)) {
+- DMERR("%s: target type %s may not be included in read-only tables",
+- dm_device_name(t->md), type);
+- return -EINVAL;
++ tgt->error = "target type may not be included in a read-only table";
++ goto bad;
+ }
+
+ if (t->immutable_target_type) {
+ if (t->immutable_target_type != tgt->type) {
+- DMERR("%s: immutable target type %s cannot be mixed with other target types",
+- dm_device_name(t->md), t->immutable_target_type->name);
+- return -EINVAL;
++ tgt->error = "immutable target type cannot be mixed with other target types";
++ goto bad;
+ }
+ } else if (dm_target_is_immutable(tgt->type)) {
+ if (t->num_targets) {
+- DMERR("%s: immutable target type %s cannot be mixed with other target types",
+- dm_device_name(t->md), tgt->type->name);
+- return -EINVAL;
++ tgt->error = "immutable target type cannot be mixed with other target types";
++ goto bad;
+ }
+ t->immutable_target_type = tgt->type;
+ }
+@@ -745,7 +740,6 @@ int dm_table_add_target(struct dm_table *t, const char *type,
+ */
+ if (!adjoin(t, tgt)) {
+ tgt->error = "Gap in table";
+- r = -EINVAL;
+ goto bad;
+ }
+
+diff --git a/drivers/md/md.c b/drivers/md/md.c
+index 72dc91de80f8..7453c3ed4b8f 100644
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -7847,6 +7847,9 @@ void md_do_sync(struct md_thread *thread)
+ break;
+
+ j += sectors;
++ if (j > max_sectors)
++ /* when skipping, extra large numbers can be returned. */
++ j = max_sectors;
+ if (j > 2)
+ mddev->curr_resync = j;
+ if (mddev_is_clustered(mddev))
+@@ -7915,6 +7918,12 @@ void md_do_sync(struct md_thread *thread)
+ blk_finish_plug(&plug);
+ wait_event(mddev->recovery_wait, !atomic_read(&mddev->recovery_active));
+
++ if (!test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) &&
++ !test_bit(MD_RECOVERY_INTR, &mddev->recovery) &&
++ mddev->curr_resync > 3) {
++ mddev->curr_resync_completed = mddev->curr_resync;
++ sysfs_notify(&mddev->kobj, NULL, "sync_completed");
++ }
+ /* tell personality that we are finished */
+ mddev->pers->sync_request(mddev, max_sectors, &skipped);
+
+@@ -7922,7 +7931,7 @@ void md_do_sync(struct md_thread *thread)
+ md_cluster_ops->resync_finish(mddev);
+
+ if (!test_bit(MD_RECOVERY_CHECK, &mddev->recovery) &&
+- mddev->curr_resync > 2) {
++ mddev->curr_resync > 3) {
+ if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
+ if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
+ if (mddev->curr_resync >= mddev->recovery_cp) {
+diff --git a/drivers/memstick/host/rtsx_usb_ms.c b/drivers/memstick/host/rtsx_usb_ms.c
+index 1105db2355d2..83bfb1659abe 100644
+--- a/drivers/memstick/host/rtsx_usb_ms.c
++++ b/drivers/memstick/host/rtsx_usb_ms.c
+@@ -524,6 +524,7 @@ static void rtsx_usb_ms_handle_req(struct work_struct *work)
+ int rc;
+
+ if (!host->req) {
++ pm_runtime_get_sync(ms_dev(host));
+ do {
+ rc = memstick_next_req(msh, &host->req);
+ dev_dbg(ms_dev(host), "next req %d\n", rc);
+@@ -544,6 +545,7 @@ static void rtsx_usb_ms_handle_req(struct work_struct *work)
+ host->req->error);
+ }
+ } while (!rc);
++ pm_runtime_put(ms_dev(host));
+ }
+
+ }
+@@ -570,6 +572,7 @@ static int rtsx_usb_ms_set_param(struct memstick_host *msh,
+ dev_dbg(ms_dev(host), "%s: param = %d, value = %d\n",
+ __func__, param, value);
+
++ pm_runtime_get_sync(ms_dev(host));
+ mutex_lock(&ucr->dev_mutex);
+
+ err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_MS_CARD);
+@@ -635,6 +638,7 @@ static int rtsx_usb_ms_set_param(struct memstick_host *msh,
+ }
+ out:
+ mutex_unlock(&ucr->dev_mutex);
++ pm_runtime_put(ms_dev(host));
+
+ /* power-on delay */
+ if (param == MEMSTICK_POWER && value == MEMSTICK_POWER_ON)
+@@ -681,6 +685,7 @@ static int rtsx_usb_detect_ms_card(void *__host)
+ int err;
+
+ for (;;) {
++ pm_runtime_get_sync(ms_dev(host));
+ mutex_lock(&ucr->dev_mutex);
+
+ /* Check pending MS card changes */
+@@ -703,6 +708,7 @@ static int rtsx_usb_detect_ms_card(void *__host)
+ }
+
+ poll_again:
++ pm_runtime_put(ms_dev(host));
+ if (host->eject)
+ break;
+
+diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c
+index 1ca94e6fa8fb..e9e6f7d61a71 100644
+--- a/drivers/misc/genwqe/card_utils.c
++++ b/drivers/misc/genwqe/card_utils.c
+@@ -351,17 +351,27 @@ int genwqe_alloc_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl,
+ if (copy_from_user(sgl->lpage, user_addr + user_size -
+ sgl->lpage_size, sgl->lpage_size)) {
+ rc = -EFAULT;
+- goto err_out1;
++ goto err_out2;
+ }
+ }
+ return 0;
+
++ err_out2:
++ __genwqe_free_consistent(cd, PAGE_SIZE, sgl->lpage,
++ sgl->lpage_dma_addr);
++ sgl->lpage = NULL;
++ sgl->lpage_dma_addr = 0;
+ err_out1:
+ __genwqe_free_consistent(cd, PAGE_SIZE, sgl->fpage,
+ sgl->fpage_dma_addr);
++ sgl->fpage = NULL;
++ sgl->fpage_dma_addr = 0;
+ err_out:
+ __genwqe_free_consistent(cd, sgl->sgl_size, sgl->sgl,
+ sgl->sgl_dma_addr);
++ sgl->sgl = NULL;
++ sgl->sgl_dma_addr = 0;
++ sgl->sgl_size = 0;
+ return -ENOMEM;
+ }
+
+diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
+index bae680c648ff..396d75d9fb11 100644
+--- a/drivers/misc/mei/hw-txe.c
++++ b/drivers/misc/mei/hw-txe.c
+@@ -972,11 +972,13 @@ static bool mei_txe_check_and_ack_intrs(struct mei_device *dev, bool do_ack)
+ hisr = mei_txe_br_reg_read(hw, HISR_REG);
+
+ aliveness = mei_txe_aliveness_get(dev);
+- if (hhisr & IPC_HHIER_SEC && aliveness)
++ if (hhisr & IPC_HHIER_SEC && aliveness) {
+ ipc_isr = mei_txe_sec_reg_read_silent(hw,
+ SEC_IPC_HOST_INT_STATUS_REG);
+- else
++ } else {
+ ipc_isr = 0;
++ hhisr &= ~IPC_HHIER_SEC;
++ }
+
+ generated = generated ||
+ (hisr & HISR_INT_STS_MSK) ||
+diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
+index ccefd6ca9c99..25939928d8fe 100644
+--- a/drivers/mmc/card/block.c
++++ b/drivers/mmc/card/block.c
+@@ -1652,7 +1652,7 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq,
+ struct mmc_blk_data *md = mq->data;
+ struct mmc_packed *packed = mqrq->packed;
+ bool do_rel_wr, do_data_tag;
+- u32 *packed_cmd_hdr;
++ __le32 *packed_cmd_hdr;
+ u8 hdr_blocks;
+ u8 i = 1;
+
+diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
+index 99e6521e6169..f42c11293dd8 100644
+--- a/drivers/mmc/card/queue.h
++++ b/drivers/mmc/card/queue.h
+@@ -24,7 +24,7 @@ enum mmc_packed_type {
+
+ struct mmc_packed {
+ struct list_head list;
+- u32 cmd_hdr[1024];
++ __le32 cmd_hdr[1024];
+ unsigned int blocks;
+ u8 nr_entries;
+ u8 retries;
+diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c
+index 88af827e086b..a9e97a138f3d 100644
+--- a/drivers/mmc/host/rtsx_usb_sdmmc.c
++++ b/drivers/mmc/host/rtsx_usb_sdmmc.c
+@@ -1138,11 +1138,6 @@ static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+ dev_dbg(sdmmc_dev(host), "%s\n", __func__);
+ mutex_lock(&ucr->dev_mutex);
+
+- if (rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD)) {
+- mutex_unlock(&ucr->dev_mutex);
+- return;
+- }
+-
+ sd_set_power_mode(host, ios->power_mode);
+ sd_set_bus_width(host, ios->bus_width);
+ sd_set_timing(host, ios->timing, &host->ddr_mode);
+@@ -1314,6 +1309,7 @@ static void rtsx_usb_update_led(struct work_struct *work)
+ container_of(work, struct rtsx_usb_sdmmc, led_work);
+ struct rtsx_ucr *ucr = host->ucr;
+
++ pm_runtime_get_sync(sdmmc_dev(host));
+ mutex_lock(&ucr->dev_mutex);
+
+ if (host->led.brightness == LED_OFF)
+@@ -1322,6 +1318,7 @@ static void rtsx_usb_update_led(struct work_struct *work)
+ rtsx_usb_turn_on_led(ucr);
+
+ mutex_unlock(&ucr->dev_mutex);
++ pm_runtime_put(sdmmc_dev(host));
+ }
+ #endif
+
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index c60dde917e49..5eb23ae82def 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -690,7 +690,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
+ * host->clock is in Hz. target_timeout is in us.
+ * Hence, us = 1000000 * cycles / Hz. Round up.
+ */
+- val = 1000000 * data->timeout_clks;
++ val = 1000000ULL * data->timeout_clks;
+ if (do_div(val, host->clock))
+ target_timeout++;
+ target_timeout += val;
+diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
+index 914c39f9f388..2926295a936d 100644
+--- a/drivers/scsi/arcmsr/arcmsr_hba.c
++++ b/drivers/scsi/arcmsr/arcmsr_hba.c
+@@ -2540,18 +2540,9 @@ static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
+ struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
+ struct CommandControlBlock *ccb;
+ int target = cmd->device->id;
+- int lun = cmd->device->lun;
+- uint8_t scsicmd = cmd->cmnd[0];
+ cmd->scsi_done = done;
+ cmd->host_scribble = NULL;
+ cmd->result = 0;
+- if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
+- if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
+- cmd->result = (DID_NO_CONNECT << 16);
+- }
+- cmd->scsi_done(cmd);
+- return 0;
+- }
+ if (target == 16) {
+ /* virtual device for iop message transfer */
+ arcmsr_handle_virtual_command(acb, cmd);
+diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
+index 7a1c4b4e764b..a991690167aa 100644
+--- a/drivers/scsi/megaraid/megaraid_sas_base.c
++++ b/drivers/scsi/megaraid/megaraid_sas_base.c
+@@ -1622,16 +1622,13 @@ megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
+ goto out_done;
+ }
+
+- switch (scmd->cmnd[0]) {
+- case SYNCHRONIZE_CACHE:
+- /*
+- * FW takes care of flush cache on its own
+- * No need to send it down
+- */
++ /*
++ * FW takes care of flush cache on its own for Virtual Disk.
++ * No need to send it down for VD. For JBOD send SYNCHRONIZE_CACHE to FW.
++ */
++ if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) && MEGASAS_IS_LOGICAL(scmd)) {
+ scmd->result = DID_OK << 16;
+ goto out_done;
+- default:
+- break;
+ }
+
+ if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
+diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
+index 1f8e2dc9c616..c07d1cd28e91 100644
+--- a/drivers/scsi/scsi_debug.c
++++ b/drivers/scsi/scsi_debug.c
+@@ -4993,6 +4993,7 @@ static void __exit scsi_debug_exit(void)
+ if (dif_storep)
+ vfree(dif_storep);
+
++ vfree(map_storep);
+ vfree(fake_storep);
+ }
+
+diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
+index 6efab1c455e1..f7aa434811b5 100644
+--- a/drivers/scsi/scsi_scan.c
++++ b/drivers/scsi/scsi_scan.c
+@@ -1516,12 +1516,12 @@ retry:
+ out_err:
+ kfree(lun_data);
+ out:
+- scsi_device_put(sdev);
+ if (scsi_device_created(sdev))
+ /*
+ * the sdev we used didn't appear in the report luns scan
+ */
+ __scsi_remove_device(sdev);
++ scsi_device_put(sdev);
+ return ret;
+ }
+
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index 7580abe7cb45..1cf3c0819b81 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -2495,8 +2495,10 @@ int target_get_sess_cmd(struct se_cmd *se_cmd, bool ack_kref)
+ * fabric acknowledgement that requires two target_put_sess_cmd()
+ * invocations before se_cmd descriptor release.
+ */
+- if (ack_kref)
++ if (ack_kref) {
+ kref_get(&se_cmd->cmd_kref);
++ se_cmd->se_cmd_flags |= SCF_ACK_KREF;
++ }
+
+ spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
+ if (se_sess->sess_tearing_down) {
+diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
+index 4609305a1591..ddb0d6bc45f2 100644
+--- a/drivers/target/target_core_xcopy.c
++++ b/drivers/target/target_core_xcopy.c
+@@ -675,6 +675,7 @@ static int target_xcopy_read_source(
+ rc = target_xcopy_setup_pt_cmd(xpt_cmd, xop, src_dev, &cdb[0],
+ remote_port, true);
+ if (rc < 0) {
++ ec_cmd->scsi_status = xpt_cmd->se_cmd.scsi_status;
+ transport_generic_free_cmd(se_cmd, 0);
+ return rc;
+ }
+@@ -686,6 +687,7 @@ static int target_xcopy_read_source(
+
+ rc = target_xcopy_issue_pt_cmd(xpt_cmd);
+ if (rc < 0) {
++ ec_cmd->scsi_status = xpt_cmd->se_cmd.scsi_status;
+ transport_generic_free_cmd(se_cmd, 0);
+ return rc;
+ }
+@@ -736,6 +738,7 @@ static int target_xcopy_write_destination(
+ remote_port, false);
+ if (rc < 0) {
+ struct se_cmd *src_cmd = &xop->src_pt_cmd->se_cmd;
++ ec_cmd->scsi_status = xpt_cmd->se_cmd.scsi_status;
+ /*
+ * If the failure happened before the t_mem_list hand-off in
+ * target_xcopy_setup_pt_cmd(), Reset memory + clear flag so that
+@@ -751,6 +754,7 @@ static int target_xcopy_write_destination(
+
+ rc = target_xcopy_issue_pt_cmd(xpt_cmd);
+ if (rc < 0) {
++ ec_cmd->scsi_status = xpt_cmd->se_cmd.scsi_status;
+ se_cmd->se_cmd_flags &= ~SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC;
+ transport_generic_free_cmd(se_cmd, 0);
+ return rc;
+@@ -837,9 +841,14 @@ static void target_xcopy_do_work(struct work_struct *work)
+ out:
+ xcopy_pt_undepend_remotedev(xop);
+ kfree(xop);
+-
+- pr_warn("target_xcopy_do_work: Setting X-COPY CHECK_CONDITION -> sending response\n");
+- ec_cmd->scsi_status = SAM_STAT_CHECK_CONDITION;
++ /*
++ * Don't override an error scsi status if it has already been set
++ */
++ if (ec_cmd->scsi_status == SAM_STAT_GOOD) {
++ pr_warn_ratelimited("target_xcopy_do_work: rc: %d, Setting X-COPY"
++ " CHECK_CONDITION -> sending response\n", rc);
++ ec_cmd->scsi_status = SAM_STAT_CHECK_CONDITION;
++ }
+ target_complete_cmd(ec_cmd, SAM_STAT_CHECK_CONDITION);
+ }
+
+diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
+index ba86956ef4b5..2df90a54509a 100644
+--- a/drivers/tty/vt/vt.c
++++ b/drivers/tty/vt/vt.c
+@@ -865,10 +865,15 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
+ if (new_cols == vc->vc_cols && new_rows == vc->vc_rows)
+ return 0;
+
++ if (new_screen_size > (4 << 20))
++ return -EINVAL;
+ newscreen = kmalloc(new_screen_size, GFP_USER);
+ if (!newscreen)
+ return -ENOMEM;
+
++ if (vc == sel_cons)
++ clear_selection();
++
+ old_rows = vc->vc_rows;
+ old_row_size = vc->vc_size_row;
+
+diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
+index f1fd777ef4ec..82e63f73bfd5 100644
+--- a/drivers/usb/gadget/function/u_ether.c
++++ b/drivers/usb/gadget/function/u_ether.c
+@@ -591,8 +591,9 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
+
+ /* throttle high/super speed IRQ rate back slightly */
+ if (gadget_is_dualspeed(dev->gadget))
+- req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH ||
+- dev->gadget->speed == USB_SPEED_SUPER)
++ req->no_interrupt = (((dev->gadget->speed == USB_SPEED_HIGH ||
++ dev->gadget->speed == USB_SPEED_SUPER)) &&
++ !list_empty(&dev->tx_reqs))
+ ? ((atomic_read(&dev->tx_qlen) % dev->qmult) != 0)
+ : 0;
+
+diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
+index 1dab9dfbca6a..c5de2e24c9e7 100644
+--- a/drivers/usb/host/ohci-hcd.c
++++ b/drivers/usb/host/ohci-hcd.c
+@@ -72,7 +72,7 @@
+ static const char hcd_name [] = "ohci_hcd";
+
+ #define STATECHANGE_DELAY msecs_to_jiffies(300)
+-#define IO_WATCHDOG_DELAY msecs_to_jiffies(250)
++#define IO_WATCHDOG_DELAY msecs_to_jiffies(275)
+
+ #include "ohci.h"
+ #include "pci-quirks.h"
+diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
+index 9d781d3ccc09..2dd322e92951 100644
+--- a/drivers/usb/host/xhci-hub.c
++++ b/drivers/usb/host/xhci-hub.c
+@@ -1224,6 +1224,35 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
+ return 0;
+ }
+
++/*
++ * Workaround for missing Cold Attach Status (CAS) if device re-plugged in S3.
++ * warm reset a USB3 device stuck in polling or compliance mode after resume.
++ * See Intel 100/c230 series PCH specification update Doc #332692-006 Errata #8
++ */
++static bool xhci_port_missing_cas_quirk(int port_index,
++ __le32 __iomem **port_array)
++{
++ u32 portsc;
++
++ portsc = readl(port_array[port_index]);
++
++ /* if any of these are set we are not stuck */
++ if (portsc & (PORT_CONNECT | PORT_CAS))
++ return false;
++
++ if (((portsc & PORT_PLS_MASK) != XDEV_POLLING) &&
++ ((portsc & PORT_PLS_MASK) != XDEV_COMP_MODE))
++ return false;
++
++ /* clear wakeup/change bits, and do a warm port reset */
++ portsc &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
++ portsc |= PORT_WR;
++ writel(portsc, port_array[port_index]);
++ /* flush write */
++ readl(port_array[port_index]);
++ return true;
++}
++
+ int xhci_bus_resume(struct usb_hcd *hcd)
+ {
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+@@ -1258,6 +1287,14 @@ int xhci_bus_resume(struct usb_hcd *hcd)
+ int slot_id;
+
+ temp = readl(port_array[port_index]);
++
++ /* warm reset CAS limited ports stuck in polling/compliance */
++ if ((xhci->quirks & XHCI_MISSING_CAS) &&
++ (hcd->speed >= HCD_USB3) &&
++ xhci_port_missing_cas_quirk(port_index, port_array)) {
++ xhci_dbg(xhci, "reset stuck port %d\n", port_index);
++ continue;
++ }
+ if (DEV_SUPERSPEED(temp))
+ temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
+ else
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index 54caaf87c567..fc60a9e8a129 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -45,11 +45,13 @@
+
+ #define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI 0x8c31
+ #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
++#define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI 0x9cb1
+ #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI 0x22b5
+ #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI 0xa12f
+ #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI 0x9d2f
+ #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8
+ #define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI 0x1aa8
++#define PCI_DEVICE_ID_INTEL_APL_XHCI 0x5aa8
+
+ static const char hcd_name[] = "xhci_hcd";
+
+@@ -147,7 +149,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ xhci->quirks |= XHCI_SPURIOUS_REBOOT;
+ }
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+- pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) {
++ (pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI ||
++ pdev->device == PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI)) {
+ xhci->quirks |= XHCI_SPURIOUS_REBOOT;
+ xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
+ }
+@@ -163,6 +166,11 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
+ xhci->quirks |= XHCI_SSIC_PORT_UNUSED;
+ }
++ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
++ (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
++ pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI))
++ xhci->quirks |= XHCI_MISSING_CAS;
++
+ if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
+ pdev->device == PCI_DEVICE_ID_EJ168) {
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
+diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
+index c5d6963e9cbe..f33028642e31 100644
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -286,6 +286,8 @@ struct xhci_op_regs {
+ #define XDEV_U2 (0x2 << 5)
+ #define XDEV_U3 (0x3 << 5)
+ #define XDEV_INACTIVE (0x6 << 5)
++#define XDEV_POLLING (0x7 << 5)
++#define XDEV_COMP_MODE (0xa << 5)
+ #define XDEV_RESUME (0xf << 5)
+ /* true: port has power (see HCC_PPC) */
+ #define PORT_POWER (1 << 9)
+@@ -1573,6 +1575,7 @@ struct xhci_hcd {
+ #define XHCI_PME_STUCK_QUIRK (1 << 20)
+ #define XHCI_SSIC_PORT_UNUSED (1 << 22)
+ #define XHCI_NO_64BIT_SUPPORT (1 << 23)
++#define XHCI_MISSING_CAS (1 << 24)
+ unsigned int num_active_eps;
+ unsigned int limit_active_eps;
+ /* There are two roothubs to keep track of bus suspend info for */
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index f49e859ac5ce..6d4d8b828971 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -844,7 +844,9 @@ static int cp210x_tiocmget(struct tty_struct *tty)
+ unsigned int control;
+ int result;
+
+- cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1);
++ result = cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1);
++ if (result)
++ return result;
+
+ result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0)
+ |((control & CONTROL_RTS) ? TIOCM_RTS : 0)
+diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
+index 8c48c9d83d48..494167fe6a2c 100644
+--- a/drivers/usb/serial/ftdi_sio.c
++++ b/drivers/usb/serial/ftdi_sio.c
+@@ -986,7 +986,8 @@ static const struct usb_device_id id_table_combined[] = {
+ /* ekey Devices */
+ { USB_DEVICE(FTDI_VID, FTDI_EKEY_CONV_USB_PID) },
+ /* Infineon Devices */
+- { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_PID, 1) },
++ { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_TC1798_PID, 1) },
++ { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_TC2X7_PID, 1) },
+ /* GE Healthcare devices */
+ { USB_DEVICE(GE_HEALTHCARE_VID, GE_HEALTHCARE_NEMO_TRACKER_PID) },
+ /* Active Research (Actisense) devices */
+diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
+index 48db84f25cc9..db1a9b3a5f38 100644
+--- a/drivers/usb/serial/ftdi_sio_ids.h
++++ b/drivers/usb/serial/ftdi_sio_ids.h
+@@ -626,8 +626,9 @@
+ /*
+ * Infineon Technologies
+ */
+-#define INFINEON_VID 0x058b
+-#define INFINEON_TRIBOARD_PID 0x0028 /* DAS JTAG TriBoard TC1798 V1.0 */
++#define INFINEON_VID 0x058b
++#define INFINEON_TRIBOARD_TC1798_PID 0x0028 /* DAS JTAG TriBoard TC1798 V1.0 */
++#define INFINEON_TRIBOARD_TC2X7_PID 0x0043 /* DAS JTAG TriBoard TC2X7 V1.0 */
+
+ /*
+ * Acton Research Corp.
+diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
+index a0ca291bc07f..e7e29c797824 100644
+--- a/drivers/usb/serial/usb-serial.c
++++ b/drivers/usb/serial/usb-serial.c
+@@ -1077,7 +1077,8 @@ static int usb_serial_probe(struct usb_interface *interface,
+
+ serial->disconnected = 0;
+
+- usb_serial_console_init(serial->port[0]->minor);
++ if (num_ports > 0)
++ usb_serial_console_init(serial->port[0]->minor);
+ exit:
+ module_put(type->driver.owner);
+ return 0;
+diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
+index bd3c92b4bcee..32ecb95f6214 100644
+--- a/fs/btrfs/tree-log.c
++++ b/fs/btrfs/tree-log.c
+@@ -2596,14 +2596,12 @@ static inline void btrfs_remove_all_log_ctxs(struct btrfs_root *root,
+ int index, int error)
+ {
+ struct btrfs_log_ctx *ctx;
++ struct btrfs_log_ctx *safe;
+
+- if (!error) {
+- INIT_LIST_HEAD(&root->log_ctxs[index]);
+- return;
+- }
+-
+- list_for_each_entry(ctx, &root->log_ctxs[index], list)
++ list_for_each_entry_safe(ctx, safe, &root->log_ctxs[index], list) {
++ list_del_init(&ctx->list);
+ ctx->log_ret = error;
++ }
+
+ INIT_LIST_HEAD(&root->log_ctxs[index]);
+ }
+@@ -2842,13 +2840,9 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
+ mutex_unlock(&root->log_mutex);
+
+ out_wake_log_root:
+- /*
+- * We needn't get log_mutex here because we are sure all
+- * the other tasks are blocked.
+- */
++ mutex_lock(&log_root_tree->log_mutex);
+ btrfs_remove_all_log_ctxs(log_root_tree, index2, ret);
+
+- mutex_lock(&log_root_tree->log_mutex);
+ log_root_tree->log_transid_committed++;
+ atomic_set(&log_root_tree->log_commit[index2], 0);
+ mutex_unlock(&log_root_tree->log_mutex);
+@@ -2856,10 +2850,8 @@ out_wake_log_root:
+ if (waitqueue_active(&log_root_tree->log_commit_wait[index2]))
+ wake_up(&log_root_tree->log_commit_wait[index2]);
+ out:
+- /* See above. */
+- btrfs_remove_all_log_ctxs(root, index1, ret);
+-
+ mutex_lock(&root->log_mutex);
++ btrfs_remove_all_log_ctxs(root, index1, ret);
+ root->log_transid_committed++;
+ atomic_set(&root->log_commit[index1], 0);
+ mutex_unlock(&root->log_mutex);
+diff --git a/fs/ceph/file.c b/fs/ceph/file.c
+index 3b6b522b4b31..5ae447cbd2b5 100644
+--- a/fs/ceph/file.c
++++ b/fs/ceph/file.c
+@@ -868,7 +868,8 @@ again:
+ statret = __ceph_do_getattr(inode, page,
+ CEPH_STAT_CAP_INLINE_DATA, !!page);
+ if (statret < 0) {
+- __free_page(page);
++ if (page)
++ __free_page(page);
+ if (statret == -ENODATA) {
+ BUG_ON(retry_op != READ_INLINE);
+ goto again;
+diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
+index d67a16f2a45d..350f67fb5b9c 100644
+--- a/fs/isofs/inode.c
++++ b/fs/isofs/inode.c
+@@ -690,6 +690,11 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent)
+ pri_bh = NULL;
+
+ root_found:
++ /* We don't support read-write mounts */
++ if (!(s->s_flags & MS_RDONLY)) {
++ error = -EACCES;
++ goto out_freebh;
++ }
+
+ if (joliet_level && (pri == NULL || !opt.rock)) {
+ /* This is the case of Joliet with the norock mount flag.
+@@ -1503,9 +1508,6 @@ struct inode *__isofs_iget(struct super_block *sb,
+ static struct dentry *isofs_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data)
+ {
+- /* We don't support read-write mounts */
+- if (!(flags & MS_RDONLY))
+- return ERR_PTR(-EACCES);
+ return mount_bdev(fs_type, flags, dev_name, data, isofs_fill_super);
+ }
+
+diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
+index ff2f2e6ad311..2abbb2babcae 100644
+--- a/fs/jbd2/transaction.c
++++ b/fs/jbd2/transaction.c
+@@ -1087,6 +1087,7 @@ int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh)
+ JBUFFER_TRACE(jh, "file as BJ_Reserved");
+ spin_lock(&journal->j_list_lock);
+ __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved);
++ spin_unlock(&journal->j_list_lock);
+ } else if (jh->b_transaction == journal->j_committing_transaction) {
+ /* first access by this transaction */
+ jh->b_modified = 0;
+@@ -1094,8 +1095,8 @@ int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh)
+ JBUFFER_TRACE(jh, "set next transaction");
+ spin_lock(&journal->j_list_lock);
+ jh->b_next_transaction = transaction;
++ spin_unlock(&journal->j_list_lock);
+ }
+- spin_unlock(&journal->j_list_lock);
+ jbd_unlock_bh_state(bh);
+
+ /*
+diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
+index 4d8aa749d9b2..c57cd417802b 100644
+--- a/fs/overlayfs/copy_up.c
++++ b/fs/overlayfs/copy_up.c
+@@ -129,6 +129,8 @@ static int ovl_copy_up_data(struct path *old, struct path *new, loff_t len)
+ len -= bytes;
+ }
+
++ if (!error)
++ error = vfs_fsync(new_file, 0);
+ fput(new_file);
+ out_fput:
+ fput(old_file);
+diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
+index 27060fc855d4..e0af247f4740 100644
+--- a/fs/ubifs/dir.c
++++ b/fs/ubifs/dir.c
+@@ -350,7 +350,7 @@ static unsigned int vfs_dent_type(uint8_t type)
+ */
+ static int ubifs_readdir(struct file *file, struct dir_context *ctx)
+ {
+- int err;
++ int err = 0;
+ struct qstr nm;
+ union ubifs_key key;
+ struct ubifs_dent_node *dent;
+@@ -449,16 +449,23 @@ static int ubifs_readdir(struct file *file, struct dir_context *ctx)
+ }
+
+ out:
+- if (err != -ENOENT) {
+- ubifs_err(c, "cannot find next direntry, error %d", err);
+- return err;
+- }
+-
+ kfree(file->private_data);
+ file->private_data = NULL;
++
++ if (err != -ENOENT)
++ ubifs_err(c, "cannot find next direntry, error %d", err);
++ else
++ /*
++ * -ENOENT is a non-fatal error in this context, the TNC uses
++ * it to indicate that the cursor moved past the current directory
++ * and readdir() has to stop.
++ */
++ err = 0;
++
++
+ /* 2 is a special value indicating that there are no more direntries */
+ ctx->pos = 2;
+- return 0;
++ return err;
+ }
+
+ /* Free saved readdir() state when the directory is closed */
+diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
+index fd65b3f1923c..7270162b72e4 100644
+--- a/fs/ubifs/xattr.c
++++ b/fs/ubifs/xattr.c
+@@ -173,6 +173,7 @@ out_cancel:
+ host_ui->xattr_cnt -= 1;
+ host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
+ host_ui->xattr_size -= CALC_XATTR_BYTES(size);
++ host_ui->xattr_names -= nm->len;
+ mutex_unlock(&host_ui->ui_mutex);
+ out_free:
+ make_bad_inode(inode);
+@@ -527,6 +528,7 @@ out_cancel:
+ host_ui->xattr_cnt += 1;
+ host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
+ host_ui->xattr_size += CALC_XATTR_BYTES(ui->data_len);
++ host_ui->xattr_names += nm->len;
+ mutex_unlock(&host_ui->ui_mutex);
+ ubifs_release_budget(c, &req);
+ make_bad_inode(inode);
+diff --git a/fs/xfs/libxfs/xfs_dquot_buf.c b/fs/xfs/libxfs/xfs_dquot_buf.c
+index f48c3040c9ce..6021c322316c 100644
+--- a/fs/xfs/libxfs/xfs_dquot_buf.c
++++ b/fs/xfs/libxfs/xfs_dquot_buf.c
+@@ -191,8 +191,7 @@ xfs_dquot_buf_verify_crc(
+ if (mp->m_quotainfo)
+ ndquots = mp->m_quotainfo->qi_dqperchunk;
+ else
+- ndquots = xfs_calc_dquots_per_chunk(
+- XFS_BB_TO_FSB(mp, bp->b_length));
++ ndquots = xfs_calc_dquots_per_chunk(bp->b_length);
+
+ for (i = 0; i < ndquots; i++, d++) {
+ if (!xfs_verify_cksum((char *)d, sizeof(struct xfs_dqblk),
+diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
+index 523f04c90dea..cede0a45b9c0 100644
+--- a/include/drm/drm_dp_helper.h
++++ b/include/drm/drm_dp_helper.h
+@@ -568,6 +568,10 @@
+ #define MODE_I2C_READ 4
+ #define MODE_I2C_STOP 8
+
++/* DP 1.2 MST PORTs - Section 2.5.1 v1.2a spec */
++#define DP_MST_PHYSICAL_PORT_0 0
++#define DP_MST_LOGICAL_PORT_0 8
++
+ #define DP_LINK_STATUS_SIZE 6
+ bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
+ int lane_count);
+diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
+index cbf1ce800fd1..5ef99b18966d 100644
+--- a/include/linux/irqchip/arm-gic-v3.h
++++ b/include/linux/irqchip/arm-gic-v3.h
+@@ -218,7 +218,7 @@
+ #define GITS_BASER_TYPE_SHIFT (56)
+ #define GITS_BASER_TYPE(r) (((r) >> GITS_BASER_TYPE_SHIFT) & 7)
+ #define GITS_BASER_ENTRY_SIZE_SHIFT (48)
+-#define GITS_BASER_ENTRY_SIZE(r) ((((r) >> GITS_BASER_ENTRY_SIZE_SHIFT) & 0xff) + 1)
++#define GITS_BASER_ENTRY_SIZE(r) ((((r) >> GITS_BASER_ENTRY_SIZE_SHIFT) & 0x1f) + 1)
+ #define GITS_BASER_NonShareable (0UL << 10)
+ #define GITS_BASER_InnerShareable (1UL << 10)
+ #define GITS_BASER_OuterShareable (2UL << 10)
+diff --git a/mm/list_lru.c b/mm/list_lru.c
+index 909eca2c820e..84b4c21d78d7 100644
+--- a/mm/list_lru.c
++++ b/mm/list_lru.c
+@@ -532,6 +532,8 @@ int __list_lru_init(struct list_lru *lru, bool memcg_aware,
+ err = memcg_init_list_lru(lru, memcg_aware);
+ if (err) {
+ kfree(lru->node);
++ /* Do this so a list_lru_destroy() doesn't crash: */
++ lru->node = NULL;
+ goto out;
+ }
+
+diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
+index 3073164a6fcf..06d1732e2094 100644
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -2179,16 +2179,22 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
+ if (!(status->rx_flags & IEEE80211_RX_AMSDU))
+ return RX_CONTINUE;
+
+- if (ieee80211_has_a4(hdr->frame_control) &&
+- rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
+- !rx->sdata->u.vlan.sta)
+- return RX_DROP_UNUSABLE;
++ if (unlikely(ieee80211_has_a4(hdr->frame_control))) {
++ switch (rx->sdata->vif.type) {
++ case NL80211_IFTYPE_AP_VLAN:
++ if (!rx->sdata->u.vlan.sta)
++ return RX_DROP_UNUSABLE;
++ break;
++ case NL80211_IFTYPE_STATION:
++ if (!rx->sdata->u.mgd.use_4addr)
++ return RX_DROP_UNUSABLE;
++ break;
++ default:
++ return RX_DROP_UNUSABLE;
++ }
++ }
+
+- if (is_multicast_ether_addr(hdr->addr1) &&
+- ((rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
+- rx->sdata->u.vlan.sta) ||
+- (rx->sdata->vif.type == NL80211_IFTYPE_STATION &&
+- rx->sdata->u.mgd.use_4addr)))
++ if (is_multicast_ether_addr(hdr->addr1))
+ return RX_DROP_UNUSABLE;
+
+ skb->dev = dev;
+diff --git a/scripts/sortextable.c b/scripts/sortextable.c
+index 1052d4834a44..4dd16a72a2ef 100644
+--- a/scripts/sortextable.c
++++ b/scripts/sortextable.c
+@@ -205,6 +205,35 @@ static int compare_relative_table(const void *a, const void *b)
+ return 0;
+ }
+
++static void x86_sort_relative_table(char *extab_image, int image_size)
++{
++ int i;
++
++ i = 0;
++ while (i < image_size) {
++ uint32_t *loc = (uint32_t *)(extab_image + i);
++
++ w(r(loc) + i, loc);
++ w(r(loc + 1) + i + 4, loc + 1);
++ w(r(loc + 2) + i + 8, loc + 2);
++
++ i += sizeof(uint32_t) * 3;
++ }
++
++ qsort(extab_image, image_size / 12, 12, compare_relative_table);
++
++ i = 0;
++ while (i < image_size) {
++ uint32_t *loc = (uint32_t *)(extab_image + i);
++
++ w(r(loc) - i, loc);
++ w(r(loc + 1) - (i + 4), loc + 1);
++ w(r(loc + 2) - (i + 8), loc + 2);
++
++ i += sizeof(uint32_t) * 3;
++ }
++}
++
+ static void sort_relative_table(char *extab_image, int image_size)
+ {
+ int i;
+@@ -277,6 +306,9 @@ do_file(char const *const fname)
+ break;
+ case EM_386:
+ case EM_X86_64:
++ custom_sort = x86_sort_relative_table;
++ break;
++
+ case EM_S390:
+ custom_sort = sort_relative_table;
+ break;
+diff --git a/security/keys/proc.c b/security/keys/proc.c
+index f0611a6368cd..b9f531c9e4fa 100644
+--- a/security/keys/proc.c
++++ b/security/keys/proc.c
+@@ -181,7 +181,7 @@ static int proc_keys_show(struct seq_file *m, void *v)
+ struct timespec now;
+ unsigned long timo;
+ key_ref_t key_ref, skey_ref;
+- char xbuf[12];
++ char xbuf[16];
+ int rc;
+
+ struct keyring_search_context ctx = {
+diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
+index 26ce990592a0..40072d630b49 100644
+--- a/sound/pci/hda/hda_controller.c
++++ b/sound/pci/hda/hda_controller.c
+@@ -1738,7 +1738,7 @@ irqreturn_t azx_interrupt(int irq, void *dev_id)
+ status = azx_readb(chip, RIRBSTS);
+ if (status & RIRB_INT_MASK) {
+ if (status & RIRB_INT_RESPONSE) {
+- if (chip->driver_caps & AZX_DCAPS_RIRB_PRE_DELAY)
++ if (chip->driver_caps & AZX_DCAPS_CTX_WORKAROUND)
+ udelay(80);
+ azx_update_rirb(chip);
+ }
+diff --git a/sound/pci/hda/hda_controller.h b/sound/pci/hda/hda_controller.h
+index 0efdb094d21c..6bb5340cf842 100644
+--- a/sound/pci/hda/hda_controller.h
++++ b/sound/pci/hda/hda_controller.h
+@@ -158,7 +158,7 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
+ #define AZX_DCAPS_SNOOP_MASK (3 << 10) /* snoop type mask */
+ #define AZX_DCAPS_SNOOP_OFF (1 << 12) /* snoop default off */
+ #define AZX_DCAPS_RIRB_DELAY (1 << 13) /* Long delay in read loop */
+-#define AZX_DCAPS_RIRB_PRE_DELAY (1 << 14) /* Put a delay before read */
++/* 14 unused */
+ #define AZX_DCAPS_CTX_WORKAROUND (1 << 15) /* X-Fi workaround */
+ #define AZX_DCAPS_POSFIX_LPIB (1 << 16) /* Use LPIB as default */
+ #define AZX_DCAPS_POSFIX_VIA (1 << 17) /* Use VIACOMBO as default */
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index c8506496826a..16d09825a995 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -2220,14 +2220,12 @@ static const struct pci_device_id azx_ids[] = {
+ .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
+ .class_mask = 0xffffff,
+ .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
+- AZX_DCAPS_NO_64BIT |
+- AZX_DCAPS_RIRB_PRE_DELAY | AZX_DCAPS_POSFIX_LPIB },
++ AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
+ #else
+ /* this entry seems still valid -- i.e. without emu20kx chip */
+ { PCI_DEVICE(0x1102, 0x0009),
+ .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
+- AZX_DCAPS_NO_64BIT |
+- AZX_DCAPS_RIRB_PRE_DELAY | AZX_DCAPS_POSFIX_LPIB },
++ AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
+ #endif
+ /* CM8888 */
+ { PCI_DEVICE(0x13f6, 0x5011),
+diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
+index ecc2a4ea014d..32719f28aa86 100644
+--- a/sound/usb/quirks-table.h
++++ b/sound/usb/quirks-table.h
+@@ -2898,6 +2898,23 @@ AU0828_DEVICE(0x2040, 0x7260, "Hauppauge", "HVR-950Q"),
+ AU0828_DEVICE(0x2040, 0x7213, "Hauppauge", "HVR-950Q"),
+ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
+
++/* Syntek STK1160 */
++{
++ .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
++ USB_DEVICE_ID_MATCH_INT_CLASS |
++ USB_DEVICE_ID_MATCH_INT_SUBCLASS,
++ .idVendor = 0x05e1,
++ .idProduct = 0x0408,
++ .bInterfaceClass = USB_CLASS_AUDIO,
++ .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,
++ .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
++ .vendor_name = "Syntek",
++ .product_name = "STK1160",
++ .ifnum = QUIRK_ANY_INTERFACE,
++ .type = QUIRK_AUDIO_ALIGN_TRANSFER
++ }
++},
++
+ /* Digidesign Mbox */
+ {
+ /* Thanks to Clemens Ladisch <clemens@ladisch.de> */
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-11-23 11:25 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-11-23 11:25 UTC (permalink / raw
To: gentoo-commits
commit: bde6e65e58795d11ff0054877b4a2363df426327
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Nov 23 11:25:01 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Nov 23 11:25:01 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=bde6e65e
Update gentoo kconfig patch for GENTOO_LINUX_INIT_SYSTEMD. See bug #598623
4567_distro-Gentoo-Kconfig.patch | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/4567_distro-Gentoo-Kconfig.patch b/4567_distro-Gentoo-Kconfig.patch
index 499b21f..acb0972 100644
--- a/4567_distro-Gentoo-Kconfig.patch
+++ b/4567_distro-Gentoo-Kconfig.patch
@@ -7,9 +7,9 @@
+source "distro/Kconfig"
+
source "arch/$SRCARCH/Kconfig"
---- /dev/null 2016-07-01 11:23:26.087932647 -0400
-+++ b/distro/Kconfig 2016-07-01 19:32:35.581415519 -0400
-@@ -0,0 +1,134 @@
+--- /dev/null 2016-11-15 00:56:18.320838834 -0500
++++ b/distro/Kconfig 2016-11-16 06:24:29.457357409 -0500
+@@ -0,0 +1,142 @@
+menu "Gentoo Linux"
+
+config GENTOO_LINUX
@@ -33,6 +33,7 @@
+
+ select DEVTMPFS
+ select TMPFS
++ select UNIX
+
+ select MMU
+ select SHMEM
@@ -112,17 +113,24 @@
+ select AUTOFS4_FS
+ select BLK_DEV_BSG
+ select CGROUPS
++ select CHECKPOINT_RESTORE
+ select DEVPTS_MULTIPLE_INSTANCES
++ select DMIID
+ select EPOLL
+ select FANOTIFY
+ select FHANDLE
+ select INOTIFY_USER
++ select IPV6
+ select NET
+ select NET_NS
+ select PROC_FS
++ select SECCOMP
++ select SECCOMP_FILTER
+ select SIGNALFD
+ select SYSFS
+ select TIMERFD
++ select TMPFS_POSIX_ACL
++ select TMPFS_XATTR
+
+ select ANON_INODES
+ select BLOCK
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-10-28 10:19 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-10-28 10:19 UTC (permalink / raw
To: gentoo-commits
commit: 880d575a3330d9626698dd16935b7b664d62739d
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Oct 28 10:19:17 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Oct 28 10:19:17 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=880d575a
Linux patch 4.1.35
0000_README | 4 +
1034_linux-4.1.35.patch | 215 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 219 insertions(+)
diff --git a/0000_README b/0000_README
index 72df015..5bb6b6b 100644
--- a/0000_README
+++ b/0000_README
@@ -179,6 +179,10 @@ Patch: 1033_linux-4.1.34.patch
From: http://www.kernel.org
Desc: Linux 4.1.34
+Patch: 1034_linux-4.1.35.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.35
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1034_linux-4.1.35.patch b/1034_linux-4.1.35.patch
new file mode 100644
index 0000000..cfb75c7
--- /dev/null
+++ b/1034_linux-4.1.35.patch
@@ -0,0 +1,215 @@
+diff --git a/Makefile b/Makefile
+index 2d4dea4b3107..21f657f2c4e6 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 34
++SUBLEVEL = 35
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
+index cc1993c5556e..9d781d3ccc09 100644
+--- a/drivers/usb/host/xhci-hub.c
++++ b/drivers/usb/host/xhci-hub.c
+@@ -619,8 +619,30 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
+ if ((raw_port_status & PORT_RESET) ||
+ !(raw_port_status & PORT_PE))
+ return 0xffffffff;
+- if (time_after_eq(jiffies,
+- bus_state->resume_done[wIndex])) {
++ /* did port event handler already start resume timing? */
++ if (!bus_state->resume_done[wIndex]) {
++ /* If not, maybe we are in a host initated resume? */
++ if (test_bit(wIndex, &bus_state->resuming_ports)) {
++ /* Host initated resume doesn't time the resume
++ * signalling using resume_done[].
++ * It manually sets RESUME state, sleeps 20ms
++ * and sets U0 state. This should probably be
++ * changed, but not right now.
++ */
++ } else {
++ /* port resume was discovered now and here,
++ * start resume timing
++ */
++ unsigned long timeout = jiffies +
++ msecs_to_jiffies(USB_RESUME_TIMEOUT);
++
++ set_bit(wIndex, &bus_state->resuming_ports);
++ bus_state->resume_done[wIndex] = timeout;
++ mod_timer(&hcd->rh_timer, timeout);
++ }
++ /* Has resume been signalled for USB_RESUME_TIME yet? */
++ } else if (time_after_eq(jiffies,
++ bus_state->resume_done[wIndex])) {
+ int time_left;
+
+ xhci_dbg(xhci, "Resume USB2 port %d\n",
+@@ -661,13 +683,24 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
+ } else {
+ /*
+ * The resume has been signaling for less than
+- * 20ms. Report the port status as SUSPEND,
+- * let the usbcore check port status again
+- * and clear resume signaling later.
++ * USB_RESUME_TIME. Report the port status as SUSPEND,
++ * let the usbcore check port status again and clear
++ * resume signaling later.
+ */
+ status |= USB_PORT_STAT_SUSPEND;
+ }
+ }
++ /*
++ * Clear stale usb2 resume signalling variables in case port changed
++ * state during resume signalling. For example on error
++ */
++ if ((bus_state->resume_done[wIndex] ||
++ test_bit(wIndex, &bus_state->resuming_ports)) &&
++ (raw_port_status & PORT_PLS_MASK) != XDEV_U3 &&
++ (raw_port_status & PORT_PLS_MASK) != XDEV_RESUME) {
++ bus_state->resume_done[wIndex] = 0;
++ clear_bit(wIndex, &bus_state->resuming_ports);
++ }
+ if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0
+ && (raw_port_status & PORT_POWER)
+ && (bus_state->suspended_ports & (1 << wIndex))) {
+@@ -998,6 +1031,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ if ((temp & PORT_PE) == 0)
+ goto error;
+
++ set_bit(wIndex, &bus_state->resuming_ports);
+ xhci_set_link_state(xhci, port_array, wIndex,
+ XDEV_RESUME);
+ spin_unlock_irqrestore(&xhci->lock, flags);
+@@ -1005,6 +1039,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ spin_lock_irqsave(&xhci->lock, flags);
+ xhci_set_link_state(xhci, port_array, wIndex,
+ XDEV_U0);
++ clear_bit(wIndex, &bus_state->resuming_ports);
+ }
+ bus_state->port_c_suspend |= 1 << wIndex;
+
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index 6a2911743829..2d8e77ff7821 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -1605,7 +1605,8 @@ static void handle_port_status(struct xhci_hcd *xhci,
+ */
+ bogus_port_status = true;
+ goto cleanup;
+- } else {
++ } else if (!test_bit(faked_port_index,
++ &bus_state->resuming_ports)) {
+ xhci_dbg(xhci, "resume HS port %d\n", port_id);
+ bus_state->resume_done[faked_port_index] = jiffies +
+ msecs_to_jiffies(USB_RESUME_TIMEOUT);
+diff --git a/include/linux/mm.h b/include/linux/mm.h
+index 6b85ec64d302..7cadf0a660e7 100644
+--- a/include/linux/mm.h
++++ b/include/linux/mm.h
+@@ -2064,6 +2064,7 @@ static inline struct page *follow_page(struct vm_area_struct *vma,
+ #define FOLL_NUMA 0x200 /* force NUMA hinting page fault */
+ #define FOLL_MIGRATION 0x400 /* wait for page to replace migration entry */
+ #define FOLL_TRIED 0x800 /* a retry, previous pass started an IO */
++#define FOLL_COW 0x4000 /* internal GUP flag */
+
+ typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr,
+ void *data);
+diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
+index 8fcc801fde15..d9f112bd42a7 100644
+--- a/kernel/time/timekeeping.c
++++ b/kernel/time/timekeeping.c
+@@ -309,17 +309,34 @@ u32 (*arch_gettimeoffset)(void) = default_arch_gettimeoffset;
+ static inline u32 arch_gettimeoffset(void) { return 0; }
+ #endif
+
++static inline s64 timekeeping_delta_to_ns(struct tk_read_base *tkr,
++ cycle_t delta)
++{
++ s64 nsec;
++
++ nsec = delta * tkr->mult + tkr->xtime_nsec;
++ nsec >>= tkr->shift;
++
++ /* If arch requires, add in get_arch_timeoffset() */
++ return nsec + arch_gettimeoffset();
++}
++
+ static inline s64 timekeeping_get_ns(struct tk_read_base *tkr)
+ {
+ cycle_t delta;
+- s64 nsec;
+
+ delta = timekeeping_get_delta(tkr);
++ return timekeeping_delta_to_ns(tkr, delta);
++}
+
+- nsec = (delta * tkr->mult + tkr->xtime_nsec) >> tkr->shift;
++static inline s64 timekeeping_cycles_to_ns(struct tk_read_base *tkr,
++ cycle_t cycles)
++{
++ cycle_t delta;
+
+- /* If arch requires, add in get_arch_timeoffset() */
+- return nsec + arch_gettimeoffset();
++ /* calculate the delta since the last update_wall_time */
++ delta = clocksource_delta(cycles, tkr->cycle_last, tkr->mask);
++ return timekeeping_delta_to_ns(tkr, delta);
+ }
+
+ /**
+@@ -421,8 +438,11 @@ static __always_inline u64 __ktime_get_fast_ns(struct tk_fast *tkf)
+ tkr = tkf->base + (seq & 0x01);
+ now = ktime_to_ns(tkr->base);
+
+- now += clocksource_delta(tkr->read(tkr->clock),
+- tkr->cycle_last, tkr->mask);
++ now += timekeeping_delta_to_ns(tkr,
++ clocksource_delta(
++ tkr->read(tkr->clock),
++ tkr->cycle_last,
++ tkr->mask));
+ } while (read_seqcount_retry(&tkf->seq, seq));
+
+ return now;
+diff --git a/mm/gup.c b/mm/gup.c
+index 6297f6bccfb1..e6de9e74e4ae 100644
+--- a/mm/gup.c
++++ b/mm/gup.c
+@@ -32,6 +32,16 @@ static struct page *no_page_table(struct vm_area_struct *vma,
+ return NULL;
+ }
+
++/*
++ * FOLL_FORCE can write to even unwritable pte's, but only
++ * after we've gone through a COW cycle and they are dirty.
++ */
++static inline bool can_follow_write_pte(pte_t pte, unsigned int flags)
++{
++ return pte_write(pte) ||
++ ((flags & FOLL_FORCE) && (flags & FOLL_COW) && pte_dirty(pte));
++}
++
+ static struct page *follow_page_pte(struct vm_area_struct *vma,
+ unsigned long address, pmd_t *pmd, unsigned int flags)
+ {
+@@ -66,7 +76,7 @@ retry:
+ }
+ if ((flags & FOLL_NUMA) && pte_protnone(pte))
+ goto no_page;
+- if ((flags & FOLL_WRITE) && !pte_write(pte)) {
++ if ((flags & FOLL_WRITE) && !can_follow_write_pte(pte, flags)) {
+ pte_unmap_unlock(ptep, ptl);
+ return NULL;
+ }
+@@ -315,7 +325,7 @@ static int faultin_page(struct task_struct *tsk, struct vm_area_struct *vma,
+ * reCOWed by userspace write).
+ */
+ if ((ret & VM_FAULT_WRITE) && !(vma->vm_flags & VM_WRITE))
+- *flags &= ~FOLL_WRITE;
++ *flags |= FOLL_COW;
+ return 0;
+ }
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-10-12 19:52 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-10-12 19:52 UTC (permalink / raw
To: gentoo-commits
commit: 4635b6f052c8eab94dec6e8fbb7dbbc8905f83eb
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Oct 12 19:52:44 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Oct 12 19:52:44 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=4635b6f0
Linux patch 4.1.34
0000_README | 4 +
1033_linux-4.1.34.patch | 3255 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 3259 insertions(+)
diff --git a/0000_README b/0000_README
index 9a2fbfa..72df015 100644
--- a/0000_README
+++ b/0000_README
@@ -175,6 +175,10 @@ Patch: 1032_linux-4.1.33.patch
From: http://www.kernel.org
Desc: Linux 4.1.33
+Patch: 1033_linux-4.1.34.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.34
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1033_linux-4.1.34.patch b/1033_linux-4.1.34.patch
new file mode 100644
index 0000000..fffc6fa
--- /dev/null
+++ b/1033_linux-4.1.34.patch
@@ -0,0 +1,3255 @@
+diff --git a/Makefile b/Makefile
+index 47c47d7c0926..2d4dea4b3107 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 33
++SUBLEVEL = 34
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/alpha/include/asm/uaccess.h b/arch/alpha/include/asm/uaccess.h
+index 9b0d40093c9a..c0ddbbf73400 100644
+--- a/arch/alpha/include/asm/uaccess.h
++++ b/arch/alpha/include/asm/uaccess.h
+@@ -371,14 +371,6 @@ __copy_tofrom_user_nocheck(void *to, const void *from, long len)
+ return __cu_len;
+ }
+
+-extern inline long
+-__copy_tofrom_user(void *to, const void *from, long len, const void __user *validate)
+-{
+- if (__access_ok((unsigned long)validate, len, get_fs()))
+- len = __copy_tofrom_user_nocheck(to, from, len);
+- return len;
+-}
+-
+ #define __copy_to_user(to, from, n) \
+ ({ \
+ __chk_user_ptr(to); \
+@@ -393,17 +385,22 @@ __copy_tofrom_user(void *to, const void *from, long len, const void __user *vali
+ #define __copy_to_user_inatomic __copy_to_user
+ #define __copy_from_user_inatomic __copy_from_user
+
+-
+ extern inline long
+ copy_to_user(void __user *to, const void *from, long n)
+ {
+- return __copy_tofrom_user((__force void *)to, from, n, to);
++ if (likely(__access_ok((unsigned long)to, n, get_fs())))
++ n = __copy_tofrom_user_nocheck((__force void *)to, from, n);
++ return n;
+ }
+
+ extern inline long
+ copy_from_user(void *to, const void __user *from, long n)
+ {
+- return __copy_tofrom_user(to, (__force void *)from, n, from);
++ if (likely(__access_ok((unsigned long)from, n, get_fs())))
++ n = __copy_tofrom_user_nocheck(to, (__force void *)from, n);
++ else
++ memset(to, 0, n);
++ return n;
+ }
+
+ extern void __do_clear_user(void);
+diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h
+index 30c9baffa96f..08770c750696 100644
+--- a/arch/arc/include/asm/uaccess.h
++++ b/arch/arc/include/asm/uaccess.h
+@@ -83,7 +83,10 @@
+ "2: ;nop\n" \
+ " .section .fixup, \"ax\"\n" \
+ " .align 4\n" \
+- "3: mov %0, %3\n" \
++ "3: # return -EFAULT\n" \
++ " mov %0, %3\n" \
++ " # zero out dst ptr\n" \
++ " mov %1, 0\n" \
+ " j 2b\n" \
+ " .previous\n" \
+ " .section __ex_table, \"a\"\n" \
+@@ -101,7 +104,11 @@
+ "2: ;nop\n" \
+ " .section .fixup, \"ax\"\n" \
+ " .align 4\n" \
+- "3: mov %0, %3\n" \
++ "3: # return -EFAULT\n" \
++ " mov %0, %3\n" \
++ " # zero out dst ptr\n" \
++ " mov %1, 0\n" \
++ " mov %R1, 0\n" \
+ " j 2b\n" \
+ " .previous\n" \
+ " .section __ex_table, \"a\"\n" \
+diff --git a/arch/arm/boot/dts/kirkwood-ib62x0.dts b/arch/arm/boot/dts/kirkwood-ib62x0.dts
+index bfa5edde179c..2c1e7f09205f 100644
+--- a/arch/arm/boot/dts/kirkwood-ib62x0.dts
++++ b/arch/arm/boot/dts/kirkwood-ib62x0.dts
+@@ -113,7 +113,7 @@
+
+ partition@e0000 {
+ label = "u-boot environment";
+- reg = <0xe0000 0x100000>;
++ reg = <0xe0000 0x20000>;
+ };
+
+ partition@100000 {
+diff --git a/arch/arm/boot/dts/stih410.dtsi b/arch/arm/boot/dts/stih410.dtsi
+index 208b5e89036a..f7b2c8defe56 100644
+--- a/arch/arm/boot/dts/stih410.dtsi
++++ b/arch/arm/boot/dts/stih410.dtsi
+@@ -33,7 +33,8 @@
+ compatible = "st,st-ohci-300x";
+ reg = <0x9a03c00 0x100>;
+ interrupts = <GIC_SPI 180 IRQ_TYPE_NONE>;
+- clocks = <&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>;
++ clocks = <&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>,
++ <&clk_s_c0_flexgen CLK_RX_ICN_DISP_0>;
+ resets = <&powerdown STIH407_USB2_PORT0_POWERDOWN>,
+ <&softreset STIH407_USB2_PORT0_SOFTRESET>;
+ reset-names = "power", "softreset";
+@@ -47,7 +48,8 @@
+ interrupts = <GIC_SPI 151 IRQ_TYPE_NONE>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb0>;
+- clocks = <&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>;
++ clocks = <&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>,
++ <&clk_s_c0_flexgen CLK_RX_ICN_DISP_0>;
+ resets = <&powerdown STIH407_USB2_PORT0_POWERDOWN>,
+ <&softreset STIH407_USB2_PORT0_SOFTRESET>;
+ reset-names = "power", "softreset";
+@@ -59,7 +61,8 @@
+ compatible = "st,st-ohci-300x";
+ reg = <0x9a83c00 0x100>;
+ interrupts = <GIC_SPI 181 IRQ_TYPE_NONE>;
+- clocks = <&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>;
++ clocks = <&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>,
++ <&clk_s_c0_flexgen CLK_RX_ICN_DISP_0>;
+ resets = <&powerdown STIH407_USB2_PORT1_POWERDOWN>,
+ <&softreset STIH407_USB2_PORT1_SOFTRESET>;
+ reset-names = "power", "softreset";
+@@ -73,7 +76,8 @@
+ interrupts = <GIC_SPI 153 IRQ_TYPE_NONE>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb1>;
+- clocks = <&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>;
++ clocks = <&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>,
++ <&clk_s_c0_flexgen CLK_RX_ICN_DISP_0>;
+ resets = <&powerdown STIH407_USB2_PORT1_POWERDOWN>,
+ <&softreset STIH407_USB2_PORT1_SOFTRESET>;
+ reset-names = "power", "softreset";
+diff --git a/arch/arm/crypto/aes-ce-glue.c b/arch/arm/crypto/aes-ce-glue.c
+index b445a5d56f43..593da7ffb449 100644
+--- a/arch/arm/crypto/aes-ce-glue.c
++++ b/arch/arm/crypto/aes-ce-glue.c
+@@ -279,7 +279,7 @@ static int ctr_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+ err = blkcipher_walk_done(desc, &walk,
+ walk.nbytes % AES_BLOCK_SIZE);
+ }
+- if (nbytes) {
++ if (walk.nbytes % AES_BLOCK_SIZE) {
+ u8 *tdst = walk.dst.virt.addr + blocks * AES_BLOCK_SIZE;
+ u8 *tsrc = walk.src.virt.addr + blocks * AES_BLOCK_SIZE;
+ u8 __aligned(8) tail[AES_BLOCK_SIZE];
+diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
+index 5414081c0bbf..87b2663a5564 100644
+--- a/arch/arm/kvm/arm.c
++++ b/arch/arm/kvm/arm.c
+@@ -154,8 +154,6 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
+ {
+ int i;
+
+- kvm_free_stage2_pgd(kvm);
+-
+ for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+ if (kvm->vcpus[i]) {
+ kvm_arch_vcpu_free(kvm->vcpus[i]);
+diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
+index 691ea94897fd..a33af44230da 100644
+--- a/arch/arm/kvm/mmu.c
++++ b/arch/arm/kvm/mmu.c
+@@ -1850,6 +1850,7 @@ void kvm_arch_memslots_updated(struct kvm *kvm)
+
+ void kvm_arch_flush_shadow_all(struct kvm *kvm)
+ {
++ kvm_free_stage2_pgd(kvm);
+ }
+
+ void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
+diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c
+index 6a7c6fc780cc..4627c862beac 100644
+--- a/arch/arm/mach-imx/pm-imx6.c
++++ b/arch/arm/mach-imx/pm-imx6.c
+@@ -288,7 +288,7 @@ int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
+ val |= 0x3 << BP_CLPCR_STBY_COUNT;
+ val |= BM_CLPCR_VSTBY;
+ val |= BM_CLPCR_SBYOS;
+- if (cpu_is_imx6sl())
++ if (cpu_is_imx6sl() || cpu_is_imx6sx())
+ val |= BM_CLPCR_BYPASS_PMIC_READY;
+ if (cpu_is_imx6sl() || cpu_is_imx6sx())
+ val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS;
+diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+index 4e8e93c398db..808c8e59000d 100644
+--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
++++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+@@ -724,8 +724,20 @@ static struct omap_hwmod omap3xxx_dss_dispc_hwmod = {
+ * display serial interface controller
+ */
+
++static struct omap_hwmod_class_sysconfig omap3xxx_dsi_sysc = {
++ .rev_offs = 0x0000,
++ .sysc_offs = 0x0010,
++ .syss_offs = 0x0014,
++ .sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY |
++ SYSC_HAS_ENAWAKEUP | SYSC_HAS_SIDLEMODE |
++ SYSC_HAS_SOFTRESET | SYSS_HAS_RESET_STATUS),
++ .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
++ .sysc_fields = &omap_hwmod_sysc_type1,
++};
++
+ static struct omap_hwmod_class omap3xxx_dsi_hwmod_class = {
+ .name = "dsi",
++ .sysc = &omap3xxx_dsi_sysc,
+ };
+
+ static struct omap_hwmod_irq_info omap3xxx_dsi1_irqs[] = {
+diff --git a/arch/arm64/crypto/aes-glue.c b/arch/arm64/crypto/aes-glue.c
+index 05d9e16c0dfd..6a51dfccfe71 100644
+--- a/arch/arm64/crypto/aes-glue.c
++++ b/arch/arm64/crypto/aes-glue.c
+@@ -211,7 +211,7 @@ static int ctr_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+ err = blkcipher_walk_done(desc, &walk,
+ walk.nbytes % AES_BLOCK_SIZE);
+ }
+- if (nbytes) {
++ if (walk.nbytes % AES_BLOCK_SIZE) {
+ u8 *tdst = walk.dst.virt.addr + blocks * AES_BLOCK_SIZE;
+ u8 *tsrc = walk.src.virt.addr + blocks * AES_BLOCK_SIZE;
+ u8 __aligned(8) tail[AES_BLOCK_SIZE];
+diff --git a/arch/arm64/include/asm/spinlock.h b/arch/arm64/include/asm/spinlock.h
+index cee128732435..d155a9bbfab6 100644
+--- a/arch/arm64/include/asm/spinlock.h
++++ b/arch/arm64/include/asm/spinlock.h
+@@ -231,4 +231,14 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
+ #define arch_read_relax(lock) cpu_relax()
+ #define arch_write_relax(lock) cpu_relax()
+
++/*
++ * Accesses appearing in program order before a spin_lock() operation
++ * can be reordered with accesses inside the critical section, by virtue
++ * of arch_spin_lock being constructed using acquire semantics.
++ *
++ * In cases where this is problematic (e.g. try_to_wake_up), an
++ * smp_mb__before_spinlock() can restore the required ordering.
++ */
++#define smp_mb__before_spinlock() smp_mb()
++
+ #endif /* __ASM_SPINLOCK_H */
+diff --git a/arch/avr32/include/asm/uaccess.h b/arch/avr32/include/asm/uaccess.h
+index a46f7cf3e1ea..20b52c40bcd2 100644
+--- a/arch/avr32/include/asm/uaccess.h
++++ b/arch/avr32/include/asm/uaccess.h
+@@ -74,7 +74,7 @@ extern __kernel_size_t __copy_user(void *to, const void *from,
+
+ extern __kernel_size_t copy_to_user(void __user *to, const void *from,
+ __kernel_size_t n);
+-extern __kernel_size_t copy_from_user(void *to, const void __user *from,
++extern __kernel_size_t ___copy_from_user(void *to, const void __user *from,
+ __kernel_size_t n);
+
+ static inline __kernel_size_t __copy_to_user(void __user *to, const void *from,
+@@ -88,6 +88,15 @@ static inline __kernel_size_t __copy_from_user(void *to,
+ {
+ return __copy_user(to, (const void __force *)from, n);
+ }
++static inline __kernel_size_t copy_from_user(void *to,
++ const void __user *from,
++ __kernel_size_t n)
++{
++ size_t res = ___copy_from_user(to, from, n);
++ if (unlikely(res))
++ memset(to + (n - res), 0, res);
++ return res;
++}
+
+ #define __copy_to_user_inatomic __copy_to_user
+ #define __copy_from_user_inatomic __copy_from_user
+diff --git a/arch/avr32/kernel/avr32_ksyms.c b/arch/avr32/kernel/avr32_ksyms.c
+index d93ead02daed..7c6cf14f0985 100644
+--- a/arch/avr32/kernel/avr32_ksyms.c
++++ b/arch/avr32/kernel/avr32_ksyms.c
+@@ -36,7 +36,7 @@ EXPORT_SYMBOL(copy_page);
+ /*
+ * Userspace access stuff.
+ */
+-EXPORT_SYMBOL(copy_from_user);
++EXPORT_SYMBOL(___copy_from_user);
+ EXPORT_SYMBOL(copy_to_user);
+ EXPORT_SYMBOL(__copy_user);
+ EXPORT_SYMBOL(strncpy_from_user);
+diff --git a/arch/avr32/lib/copy_user.S b/arch/avr32/lib/copy_user.S
+index ea59c04b07de..075373471da1 100644
+--- a/arch/avr32/lib/copy_user.S
++++ b/arch/avr32/lib/copy_user.S
+@@ -23,13 +23,13 @@
+ */
+ .text
+ .align 1
+- .global copy_from_user
+- .type copy_from_user, @function
+-copy_from_user:
++ .global ___copy_from_user
++ .type ___copy_from_user, @function
++___copy_from_user:
+ branch_if_kernel r8, __copy_user
+ ret_if_privileged r8, r11, r10, r10
+ rjmp __copy_user
+- .size copy_from_user, . - copy_from_user
++ .size ___copy_from_user, . - ___copy_from_user
+
+ .global copy_to_user
+ .type copy_to_user, @function
+diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h
+index 90612a7f2cf3..8cd0184ea9ef 100644
+--- a/arch/blackfin/include/asm/uaccess.h
++++ b/arch/blackfin/include/asm/uaccess.h
+@@ -177,11 +177,12 @@ static inline int bad_user_access_length(void)
+ static inline unsigned long __must_check
+ copy_from_user(void *to, const void __user *from, unsigned long n)
+ {
+- if (access_ok(VERIFY_READ, from, n))
++ if (likely(access_ok(VERIFY_READ, from, n))) {
+ memcpy(to, (const void __force *)from, n);
+- else
+- return n;
+- return 0;
++ return 0;
++ }
++ memset(to, 0, n);
++ return n;
+ }
+
+ static inline unsigned long __must_check
+diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h
+index e3530d0f13ee..56c7d5750abd 100644
+--- a/arch/cris/include/asm/uaccess.h
++++ b/arch/cris/include/asm/uaccess.h
+@@ -194,30 +194,6 @@ extern unsigned long __copy_user(void __user *to, const void *from, unsigned lon
+ extern unsigned long __copy_user_zeroing(void *to, const void __user *from, unsigned long n);
+ extern unsigned long __do_clear_user(void __user *to, unsigned long n);
+
+-static inline unsigned long
+-__generic_copy_to_user(void __user *to, const void *from, unsigned long n)
+-{
+- if (access_ok(VERIFY_WRITE, to, n))
+- return __copy_user(to, from, n);
+- return n;
+-}
+-
+-static inline unsigned long
+-__generic_copy_from_user(void *to, const void __user *from, unsigned long n)
+-{
+- if (access_ok(VERIFY_READ, from, n))
+- return __copy_user_zeroing(to, from, n);
+- return n;
+-}
+-
+-static inline unsigned long
+-__generic_clear_user(void __user *to, unsigned long n)
+-{
+- if (access_ok(VERIFY_WRITE, to, n))
+- return __do_clear_user(to, n);
+- return n;
+-}
+-
+ static inline long
+ __strncpy_from_user(char *dst, const char __user *src, long count)
+ {
+@@ -282,7 +258,7 @@ __constant_copy_from_user(void *to, const void __user *from, unsigned long n)
+ else if (n == 24)
+ __asm_copy_from_user_24(to, from, ret);
+ else
+- ret = __generic_copy_from_user(to, from, n);
++ ret = __copy_user_zeroing(to, from, n);
+
+ return ret;
+ }
+@@ -333,7 +309,7 @@ __constant_copy_to_user(void __user *to, const void *from, unsigned long n)
+ else if (n == 24)
+ __asm_copy_to_user_24(to, from, ret);
+ else
+- ret = __generic_copy_to_user(to, from, n);
++ ret = __copy_user(to, from, n);
+
+ return ret;
+ }
+@@ -366,26 +342,43 @@ __constant_clear_user(void __user *to, unsigned long n)
+ else if (n == 24)
+ __asm_clear_24(to, ret);
+ else
+- ret = __generic_clear_user(to, n);
++ ret = __do_clear_user(to, n);
+
+ return ret;
+ }
+
+
+-#define clear_user(to, n) \
+- (__builtin_constant_p(n) ? \
+- __constant_clear_user(to, n) : \
+- __generic_clear_user(to, n))
++static inline size_t clear_user(void __user *to, size_t n)
++{
++ if (unlikely(!access_ok(VERIFY_WRITE, to, n)))
++ return n;
++ if (__builtin_constant_p(n))
++ return __constant_clear_user(to, n);
++ else
++ return __do_clear_user(to, n);
++}
+
+-#define copy_from_user(to, from, n) \
+- (__builtin_constant_p(n) ? \
+- __constant_copy_from_user(to, from, n) : \
+- __generic_copy_from_user(to, from, n))
++static inline size_t copy_from_user(void *to, const void __user *from, size_t n)
++{
++ if (unlikely(!access_ok(VERIFY_READ, from, n))) {
++ memset(to, 0, n);
++ return n;
++ }
++ if (__builtin_constant_p(n))
++ return __constant_copy_from_user(to, from, n);
++ else
++ return __copy_user_zeroing(to, from, n);
++}
+
+-#define copy_to_user(to, from, n) \
+- (__builtin_constant_p(n) ? \
+- __constant_copy_to_user(to, from, n) : \
+- __generic_copy_to_user(to, from, n))
++static inline size_t copy_to_user(void __user *to, const void *from, size_t n)
++{
++ if (unlikely(!access_ok(VERIFY_WRITE, to, n)))
++ return n;
++ if (__builtin_constant_p(n))
++ return __constant_copy_to_user(to, from, n);
++ else
++ return __copy_user(to, from, n);
++}
+
+ /* We let the __ versions of copy_from/to_user inline, because they're often
+ * used in fast paths and have only a small space overhead.
+diff --git a/arch/frv/include/asm/uaccess.h b/arch/frv/include/asm/uaccess.h
+index 3ac9a59d65d4..87d9e34c5df8 100644
+--- a/arch/frv/include/asm/uaccess.h
++++ b/arch/frv/include/asm/uaccess.h
+@@ -263,19 +263,25 @@ do { \
+ extern long __memset_user(void *dst, unsigned long count);
+ extern long __memcpy_user(void *dst, const void *src, unsigned long count);
+
+-#define clear_user(dst,count) __memset_user(____force(dst), (count))
++#define __clear_user(dst,count) __memset_user(____force(dst), (count))
+ #define __copy_from_user_inatomic(to, from, n) __memcpy_user((to), ____force(from), (n))
+ #define __copy_to_user_inatomic(to, from, n) __memcpy_user(____force(to), (from), (n))
+
+ #else
+
+-#define clear_user(dst,count) (memset(____force(dst), 0, (count)), 0)
++#define __clear_user(dst,count) (memset(____force(dst), 0, (count)), 0)
+ #define __copy_from_user_inatomic(to, from, n) (memcpy((to), ____force(from), (n)), 0)
+ #define __copy_to_user_inatomic(to, from, n) (memcpy(____force(to), (from), (n)), 0)
+
+ #endif
+
+-#define __clear_user clear_user
++static inline unsigned long __must_check
++clear_user(void __user *to, unsigned long n)
++{
++ if (likely(__access_ok(to, n)))
++ n = __clear_user(to, n);
++ return n;
++}
+
+ static inline unsigned long __must_check
+ __copy_to_user(void __user *to, const void *from, unsigned long n)
+diff --git a/arch/hexagon/include/asm/uaccess.h b/arch/hexagon/include/asm/uaccess.h
+index e4127e4d6a5b..25fc9049db8a 100644
+--- a/arch/hexagon/include/asm/uaccess.h
++++ b/arch/hexagon/include/asm/uaccess.h
+@@ -102,7 +102,8 @@ static inline long hexagon_strncpy_from_user(char *dst, const char __user *src,
+ {
+ long res = __strnlen_user(src, n);
+
+- /* return from strnlen can't be zero -- that would be rubbish. */
++ if (unlikely(!res))
++ return -EFAULT;
+
+ if (res > n) {
+ copy_from_user(dst, src, n);
+diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h
+index 4f3fb6ccbf21..40c2027a2bf4 100644
+--- a/arch/ia64/include/asm/uaccess.h
++++ b/arch/ia64/include/asm/uaccess.h
+@@ -263,17 +263,15 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
+ __cu_len; \
+ })
+
+-#define copy_from_user(to, from, n) \
+-({ \
+- void *__cu_to = (to); \
+- const void __user *__cu_from = (from); \
+- long __cu_len = (n); \
+- \
+- __chk_user_ptr(__cu_from); \
+- if (__access_ok(__cu_from, __cu_len, get_fs())) \
+- __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \
+- __cu_len; \
+-})
++static inline unsigned long
++copy_from_user(void *to, const void __user *from, unsigned long n)
++{
++ if (likely(__access_ok(from, n, get_fs())))
++ n = __copy_user((__force void __user *) to, from, n);
++ else
++ memset(to, 0, n);
++ return n;
++}
+
+ #define __copy_in_user(to, from, size) __copy_user((to), (from), (size))
+
+diff --git a/arch/m32r/include/asm/uaccess.h b/arch/m32r/include/asm/uaccess.h
+index 71adff209405..c66a38d0a895 100644
+--- a/arch/m32r/include/asm/uaccess.h
++++ b/arch/m32r/include/asm/uaccess.h
+@@ -215,7 +215,7 @@ extern int fixup_exception(struct pt_regs *regs);
+ #define __get_user_nocheck(x, ptr, size) \
+ ({ \
+ long __gu_err = 0; \
+- unsigned long __gu_val; \
++ unsigned long __gu_val = 0; \
+ might_fault(); \
+ __get_user_size(__gu_val, (ptr), (size), __gu_err); \
+ (x) = (__force __typeof__(*(ptr)))__gu_val; \
+diff --git a/arch/metag/include/asm/uaccess.h b/arch/metag/include/asm/uaccess.h
+index 8282cbce7e39..273e61225c27 100644
+--- a/arch/metag/include/asm/uaccess.h
++++ b/arch/metag/include/asm/uaccess.h
+@@ -204,8 +204,9 @@ extern unsigned long __must_check __copy_user_zeroing(void *to,
+ static inline unsigned long
+ copy_from_user(void *to, const void __user *from, unsigned long n)
+ {
+- if (access_ok(VERIFY_READ, from, n))
++ if (likely(access_ok(VERIFY_READ, from, n)))
+ return __copy_user_zeroing(to, from, n);
++ memset(to, 0, n);
+ return n;
+ }
+
+diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
+index 62942fd12672..0c0a5cfbf79a 100644
+--- a/arch/microblaze/include/asm/uaccess.h
++++ b/arch/microblaze/include/asm/uaccess.h
+@@ -226,7 +226,7 @@ extern long __user_bad(void);
+
+ #define __get_user(x, ptr) \
+ ({ \
+- unsigned long __gu_val; \
++ unsigned long __gu_val = 0; \
+ /*unsigned long __gu_ptr = (unsigned long)(ptr);*/ \
+ long __gu_err; \
+ switch (sizeof(*(ptr))) { \
+@@ -371,10 +371,13 @@ extern long __user_bad(void);
+ static inline long copy_from_user(void *to,
+ const void __user *from, unsigned long n)
+ {
++ unsigned long res = n;
+ might_fault();
+- if (access_ok(VERIFY_READ, from, n))
+- return __copy_from_user(to, from, n);
+- return n;
++ if (likely(access_ok(VERIFY_READ, from, n)))
++ res = __copy_from_user(to, from, n);
++ if (unlikely(res))
++ memset(to + (n - res), 0, res);
++ return res;
+ }
+
+ #define __copy_to_user(to, from, n) \
+diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
+index 6156ac8c4cfb..ab49b14a4be0 100644
+--- a/arch/mips/include/asm/asmmacro.h
++++ b/arch/mips/include/asm/asmmacro.h
+@@ -135,6 +135,7 @@
+ ldc1 $f28, THREAD_FPR28(\thread)
+ ldc1 $f30, THREAD_FPR30(\thread)
+ ctc1 \tmp, fcr31
++ .set pop
+ .endm
+
+ .macro fpu_restore_16odd thread
+diff --git a/arch/mips/include/asm/mach-paravirt/kernel-entry-init.h b/arch/mips/include/asm/mach-paravirt/kernel-entry-init.h
+index 2f82bfa3a773..c9f5769dfc8f 100644
+--- a/arch/mips/include/asm/mach-paravirt/kernel-entry-init.h
++++ b/arch/mips/include/asm/mach-paravirt/kernel-entry-init.h
+@@ -11,11 +11,13 @@
+ #define CP0_EBASE $15, 1
+
+ .macro kernel_entry_setup
++#ifdef CONFIG_SMP
+ mfc0 t0, CP0_EBASE
+ andi t0, t0, 0x3ff # CPUNum
+ beqz t0, 1f
+ # CPUs other than zero goto smp_bootstrap
+ j smp_bootstrap
++#endif /* CONFIG_SMP */
+
+ 1:
+ .endm
+diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
+index bf8b32450ef6..bc2f5164ce51 100644
+--- a/arch/mips/include/asm/uaccess.h
++++ b/arch/mips/include/asm/uaccess.h
+@@ -14,6 +14,7 @@
+ #include <linux/kernel.h>
+ #include <linux/errno.h>
+ #include <linux/thread_info.h>
++#include <linux/string.h>
+ #include <asm/asm-eva.h>
+
+ /*
+@@ -1136,6 +1137,8 @@ extern size_t __copy_in_user_eva(void *__to, const void *__from, size_t __n);
+ __cu_len = __invoke_copy_from_user(__cu_to, \
+ __cu_from, \
+ __cu_len); \
++ } else { \
++ memset(__cu_to, 0, __cu_len); \
+ } \
+ } \
+ __cu_len; \
+diff --git a/arch/mips/kernel/mips-r2-to-r6-emul.c b/arch/mips/kernel/mips-r2-to-r6-emul.c
+index e19fa363c8fe..488e50dd2fe6 100644
+--- a/arch/mips/kernel/mips-r2-to-r6-emul.c
++++ b/arch/mips/kernel/mips-r2-to-r6-emul.c
+@@ -1163,7 +1163,9 @@ fpu_emul:
+ regs->regs[31] = r31;
+ regs->cp0_epc = epc;
+ if (!used_math()) { /* First time FPU user. */
++ preempt_disable();
+ err = init_fpu();
++ preempt_enable();
+ set_used_math();
+ }
+ lose_fpu(1); /* Save FPU state for the emulator. */
+diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
+index 89847bee2b53..44a6f25e902e 100644
+--- a/arch/mips/kernel/process.c
++++ b/arch/mips/kernel/process.c
+@@ -593,14 +593,14 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
+ return -EOPNOTSUPP;
+
+ /* Avoid inadvertently triggering emulation */
+- if ((value & PR_FP_MODE_FR) && cpu_has_fpu &&
+- !(current_cpu_data.fpu_id & MIPS_FPIR_F64))
++ if ((value & PR_FP_MODE_FR) && raw_cpu_has_fpu &&
++ !(raw_current_cpu_data.fpu_id & MIPS_FPIR_F64))
+ return -EOPNOTSUPP;
+- if ((value & PR_FP_MODE_FRE) && cpu_has_fpu && !cpu_has_fre)
++ if ((value & PR_FP_MODE_FRE) && raw_cpu_has_fpu && !cpu_has_fre)
+ return -EOPNOTSUPP;
+
+ /* FR = 0 not supported in MIPS R6 */
+- if (!(value & PR_FP_MODE_FR) && cpu_has_fpu && cpu_has_mips_r6)
++ if (!(value & PR_FP_MODE_FR) && raw_cpu_has_fpu && cpu_has_mips_r6)
+ return -EOPNOTSUPP;
+
+ /* Proceed with the mode switch */
+diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
+index 3cef551908f4..a0268f61cd57 100644
+--- a/arch/mips/kernel/smp.c
++++ b/arch/mips/kernel/smp.c
+@@ -172,6 +172,9 @@ asmlinkage void start_secondary(void)
+ cpumask_set_cpu(cpu, &cpu_coherent_mask);
+ notify_cpu_starting(cpu);
+
++ cpumask_set_cpu(cpu, &cpu_callin_map);
++ synchronise_count_slave(cpu);
++
+ set_cpu_online(cpu, true);
+
+ set_cpu_sibling_map(cpu);
+@@ -179,10 +182,6 @@ asmlinkage void start_secondary(void)
+
+ calculate_cpu_foreign_map();
+
+- cpumask_set_cpu(cpu, &cpu_callin_map);
+-
+- synchronise_count_slave(cpu);
+-
+ /*
+ * irq will be enabled in ->smp_finish(), enabling it too early
+ * is dangerous.
+diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c
+index 7a7ed9ca01bb..eff71c75dc27 100644
+--- a/arch/mips/kvm/tlb.c
++++ b/arch/mips/kvm/tlb.c
+@@ -152,7 +152,7 @@ static int kvm_mips_map_page(struct kvm *kvm, gfn_t gfn)
+ srcu_idx = srcu_read_lock(&kvm->srcu);
+ pfn = kvm_mips_gfn_to_pfn(kvm, gfn);
+
+- if (kvm_mips_is_error_pfn(pfn)) {
++ if (is_error_noslot_pfn(pfn)) {
+ kvm_err("Couldn't get pfn for gfn %#" PRIx64 "!\n", gfn);
+ err = -EFAULT;
+ goto out;
+diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h
+index 537278746a15..4af43d9ba495 100644
+--- a/arch/mn10300/include/asm/uaccess.h
++++ b/arch/mn10300/include/asm/uaccess.h
+@@ -181,6 +181,7 @@ struct __large_struct { unsigned long buf[100]; };
+ "2:\n" \
+ " .section .fixup,\"ax\"\n" \
+ "3:\n\t" \
++ " mov 0,%1\n" \
+ " mov %3,%0\n" \
+ " jmp 2b\n" \
+ " .previous\n" \
+diff --git a/arch/mn10300/lib/usercopy.c b/arch/mn10300/lib/usercopy.c
+index 7826e6c364e7..ce8899e5e171 100644
+--- a/arch/mn10300/lib/usercopy.c
++++ b/arch/mn10300/lib/usercopy.c
+@@ -9,7 +9,7 @@
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+-#include <asm/uaccess.h>
++#include <linux/uaccess.h>
+
+ unsigned long
+ __generic_copy_to_user(void *to, const void *from, unsigned long n)
+@@ -24,6 +24,8 @@ __generic_copy_from_user(void *to, const void *from, unsigned long n)
+ {
+ if (access_ok(VERIFY_READ, from, n))
+ __copy_user_zeroing(to, from, n);
++ else
++ memset(to, 0, n);
+ return n;
+ }
+
+diff --git a/arch/nios2/include/asm/uaccess.h b/arch/nios2/include/asm/uaccess.h
+index caa51ff85a3c..0ab82324c817 100644
+--- a/arch/nios2/include/asm/uaccess.h
++++ b/arch/nios2/include/asm/uaccess.h
+@@ -102,9 +102,12 @@ extern long __copy_to_user(void __user *to, const void *from, unsigned long n);
+ static inline long copy_from_user(void *to, const void __user *from,
+ unsigned long n)
+ {
+- if (!access_ok(VERIFY_READ, from, n))
+- return n;
+- return __copy_from_user(to, from, n);
++ unsigned long res = n;
++ if (access_ok(VERIFY_READ, from, n))
++ res = __copy_from_user(to, from, n);
++ if (unlikely(res))
++ memset(to + (n - res), 0, res);
++ return res;
+ }
+
+ static inline long copy_to_user(void __user *to, const void *from,
+@@ -139,7 +142,7 @@ extern long strnlen_user(const char __user *s, long n);
+
+ #define __get_user_unknown(val, size, ptr, err) do { \
+ err = 0; \
+- if (copy_from_user(&(val), ptr, size)) { \
++ if (__copy_from_user(&(val), ptr, size)) { \
+ err = -EFAULT; \
+ } \
+ } while (0)
+@@ -166,7 +169,7 @@ do { \
+ ({ \
+ long __gu_err = -EFAULT; \
+ const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
+- unsigned long __gu_val; \
++ unsigned long __gu_val = 0; \
+ __get_user_common(__gu_val, sizeof(*(ptr)), __gu_ptr, __gu_err);\
+ (x) = (__force __typeof__(x))__gu_val; \
+ __gu_err; \
+diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
+index a6bd07ca3d6c..5cc6b4f1b795 100644
+--- a/arch/openrisc/include/asm/uaccess.h
++++ b/arch/openrisc/include/asm/uaccess.h
+@@ -273,28 +273,20 @@ __copy_tofrom_user(void *to, const void *from, unsigned long size);
+ static inline unsigned long
+ copy_from_user(void *to, const void *from, unsigned long n)
+ {
+- unsigned long over;
+-
+- if (access_ok(VERIFY_READ, from, n))
+- return __copy_tofrom_user(to, from, n);
+- if ((unsigned long)from < TASK_SIZE) {
+- over = (unsigned long)from + n - TASK_SIZE;
+- return __copy_tofrom_user(to, from, n - over) + over;
+- }
+- return n;
++ unsigned long res = n;
++
++ if (likely(access_ok(VERIFY_READ, from, n)))
++ res = __copy_tofrom_user(to, from, n);
++ if (unlikely(res))
++ memset(to + (n - res), 0, res);
++ return res;
+ }
+
+ static inline unsigned long
+ copy_to_user(void *to, const void *from, unsigned long n)
+ {
+- unsigned long over;
+-
+- if (access_ok(VERIFY_WRITE, to, n))
+- return __copy_tofrom_user(to, from, n);
+- if ((unsigned long)to < TASK_SIZE) {
+- over = (unsigned long)to + n - TASK_SIZE;
+- return __copy_tofrom_user(to, from, n - over) + over;
+- }
++ if (likely(access_ok(VERIFY_WRITE, to, n)))
++ n = __copy_tofrom_user(to, from, n);
+ return n;
+ }
+
+@@ -303,13 +295,8 @@ extern unsigned long __clear_user(void *addr, unsigned long size);
+ static inline __must_check unsigned long
+ clear_user(void *addr, unsigned long size)
+ {
+-
+- if (access_ok(VERIFY_WRITE, addr, size))
+- return __clear_user(addr, size);
+- if ((unsigned long)addr < TASK_SIZE) {
+- unsigned long over = (unsigned long)addr + size - TASK_SIZE;
+- return __clear_user(addr, size - over) + over;
+- }
++ if (likely(access_ok(VERIFY_WRITE, addr, size)))
++ size = __clear_user(addr, size);
+ return size;
+ }
+
+diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
+index 1960b87c1c8b..4ad51465890b 100644
+--- a/arch/parisc/include/asm/uaccess.h
++++ b/arch/parisc/include/asm/uaccess.h
+@@ -10,6 +10,7 @@
+ #include <asm-generic/uaccess-unaligned.h>
+
+ #include <linux/bug.h>
++#include <linux/string.h>
+
+ #define VERIFY_READ 0
+ #define VERIFY_WRITE 1
+@@ -245,13 +246,14 @@ static inline unsigned long __must_check copy_from_user(void *to,
+ unsigned long n)
+ {
+ int sz = __compiletime_object_size(to);
+- int ret = -EFAULT;
++ unsigned long ret = n;
+
+ if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
+ ret = __copy_from_user(to, from, n);
+ else
+ copy_from_user_overflow();
+-
++ if (unlikely(ret))
++ memset(to + (n - ret), 0, ret);
+ return ret;
+ }
+
+diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
+index a0c071d24e0e..6fbea25d8c78 100644
+--- a/arch/powerpc/include/asm/uaccess.h
++++ b/arch/powerpc/include/asm/uaccess.h
+@@ -323,30 +323,17 @@ extern unsigned long __copy_tofrom_user(void __user *to,
+ static inline unsigned long copy_from_user(void *to,
+ const void __user *from, unsigned long n)
+ {
+- unsigned long over;
+-
+- if (access_ok(VERIFY_READ, from, n))
++ if (likely(access_ok(VERIFY_READ, from, n)))
+ return __copy_tofrom_user((__force void __user *)to, from, n);
+- if ((unsigned long)from < TASK_SIZE) {
+- over = (unsigned long)from + n - TASK_SIZE;
+- return __copy_tofrom_user((__force void __user *)to, from,
+- n - over) + over;
+- }
++ memset(to, 0, n);
+ return n;
+ }
+
+ static inline unsigned long copy_to_user(void __user *to,
+ const void *from, unsigned long n)
+ {
+- unsigned long over;
+-
+ if (access_ok(VERIFY_WRITE, to, n))
+ return __copy_tofrom_user(to, (__force void __user *)from, n);
+- if ((unsigned long)to < TASK_SIZE) {
+- over = (unsigned long)to + n - TASK_SIZE;
+- return __copy_tofrom_user(to, (__force void __user *)from,
+- n - over) + over;
+- }
+ return n;
+ }
+
+@@ -437,10 +424,6 @@ static inline unsigned long clear_user(void __user *addr, unsigned long size)
+ might_fault();
+ if (likely(access_ok(VERIFY_WRITE, addr, size)))
+ return __clear_user(addr, size);
+- if ((unsigned long)addr < TASK_SIZE) {
+- unsigned long over = (unsigned long)addr + size - TASK_SIZE;
+- return __clear_user(addr, size - over) + over;
+- }
+ return size;
+ }
+
+diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
+index 736d18b3cefd..4c48b487698c 100644
+--- a/arch/powerpc/mm/slb_low.S
++++ b/arch/powerpc/mm/slb_low.S
+@@ -113,7 +113,12 @@ BEGIN_FTR_SECTION
+ END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT)
+ b slb_finish_load_1T
+
+-0:
++0: /*
++ * For userspace addresses, make sure this is region 0.
++ */
++ cmpdi r9, 0
++ bne 8f
++
+ /* when using slices, we extract the psize off the slice bitmaps
+ * and then we need to get the sllp encoding off the mmu_psize_defs
+ * array.
+diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
+index d64a7a62164f..f6ac1d7e7ed8 100644
+--- a/arch/s390/include/asm/uaccess.h
++++ b/arch/s390/include/asm/uaccess.h
+@@ -213,28 +213,28 @@ int __put_user_bad(void) __attribute__((noreturn));
+ __chk_user_ptr(ptr); \
+ switch (sizeof(*(ptr))) { \
+ case 1: { \
+- unsigned char __x; \
++ unsigned char __x = 0; \
+ __gu_err = __get_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
+ (x) = *(__force __typeof__(*(ptr)) *) &__x; \
+ break; \
+ }; \
+ case 2: { \
+- unsigned short __x; \
++ unsigned short __x = 0; \
+ __gu_err = __get_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
+ (x) = *(__force __typeof__(*(ptr)) *) &__x; \
+ break; \
+ }; \
+ case 4: { \
+- unsigned int __x; \
++ unsigned int __x = 0; \
+ __gu_err = __get_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
+ (x) = *(__force __typeof__(*(ptr)) *) &__x; \
+ break; \
+ }; \
+ case 8: { \
+- unsigned long long __x; \
++ unsigned long long __x = 0; \
+ __gu_err = __get_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
+ (x) = *(__force __typeof__(*(ptr)) *) &__x; \
+diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h
+index ab66ddde777b..69326dfb894d 100644
+--- a/arch/score/include/asm/uaccess.h
++++ b/arch/score/include/asm/uaccess.h
+@@ -158,7 +158,7 @@ do { \
+ __get_user_asm(val, "lw", ptr); \
+ break; \
+ case 8: \
+- if ((copy_from_user((void *)&val, ptr, 8)) == 0) \
++ if (__copy_from_user((void *)&val, ptr, 8) == 0) \
+ __gu_err = 0; \
+ else \
+ __gu_err = -EFAULT; \
+@@ -183,6 +183,8 @@ do { \
+ \
+ if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \
+ __get_user_common((x), size, __gu_ptr); \
++ else \
++ (x) = 0; \
+ \
+ __gu_err; \
+ })
+@@ -196,6 +198,7 @@ do { \
+ "2:\n" \
+ ".section .fixup,\"ax\"\n" \
+ "3:li %0, %4\n" \
++ "li %1, 0\n" \
+ "j 2b\n" \
+ ".previous\n" \
+ ".section __ex_table,\"a\"\n" \
+@@ -293,35 +296,34 @@ extern int __copy_tofrom_user(void *to, const void *from, unsigned long len);
+ static inline unsigned long
+ copy_from_user(void *to, const void *from, unsigned long len)
+ {
+- unsigned long over;
++ unsigned long res = len;
+
+- if (access_ok(VERIFY_READ, from, len))
+- return __copy_tofrom_user(to, from, len);
++ if (likely(access_ok(VERIFY_READ, from, len)))
++ res = __copy_tofrom_user(to, from, len);
+
+- if ((unsigned long)from < TASK_SIZE) {
+- over = (unsigned long)from + len - TASK_SIZE;
+- return __copy_tofrom_user(to, from, len - over) + over;
+- }
+- return len;
++ if (unlikely(res))
++ memset(to + (len - res), 0, res);
++
++ return res;
+ }
+
+ static inline unsigned long
+ copy_to_user(void *to, const void *from, unsigned long len)
+ {
+- unsigned long over;
+-
+- if (access_ok(VERIFY_WRITE, to, len))
+- return __copy_tofrom_user(to, from, len);
++ if (likely(access_ok(VERIFY_WRITE, to, len)))
++ len = __copy_tofrom_user(to, from, len);
+
+- if ((unsigned long)to < TASK_SIZE) {
+- over = (unsigned long)to + len - TASK_SIZE;
+- return __copy_tofrom_user(to, from, len - over) + over;
+- }
+ return len;
+ }
+
+-#define __copy_from_user(to, from, len) \
+- __copy_tofrom_user((to), (from), (len))
++static inline unsigned long
++__copy_from_user(void *to, const void *from, unsigned long len)
++{
++ unsigned long left = __copy_tofrom_user(to, from, len);
++ if (unlikely(left))
++ memset(to + (len - left), 0, left);
++ return left;
++}
+
+ #define __copy_to_user(to, from, len) \
+ __copy_tofrom_user((to), (from), (len))
+@@ -335,17 +337,17 @@ __copy_to_user_inatomic(void *to, const void *from, unsigned long len)
+ static inline unsigned long
+ __copy_from_user_inatomic(void *to, const void *from, unsigned long len)
+ {
+- return __copy_from_user(to, from, len);
++ return __copy_tofrom_user(to, from, len);
+ }
+
+-#define __copy_in_user(to, from, len) __copy_from_user(to, from, len)
++#define __copy_in_user(to, from, len) __copy_tofrom_user(to, from, len)
+
+ static inline unsigned long
+ copy_in_user(void *to, const void *from, unsigned long len)
+ {
+ if (access_ok(VERIFY_READ, from, len) &&
+ access_ok(VERFITY_WRITE, to, len))
+- return copy_from_user(to, from, len);
++ return __copy_tofrom_user(to, from, len);
+ }
+
+ /*
+diff --git a/arch/sh/include/asm/uaccess.h b/arch/sh/include/asm/uaccess.h
+index a49635c51266..92ade79ac427 100644
+--- a/arch/sh/include/asm/uaccess.h
++++ b/arch/sh/include/asm/uaccess.h
+@@ -151,7 +151,10 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
+ __kernel_size_t __copy_size = (__kernel_size_t) n;
+
+ if (__copy_size && __access_ok(__copy_from, __copy_size))
+- return __copy_user(to, from, __copy_size);
++ __copy_size = __copy_user(to, from, __copy_size);
++
++ if (unlikely(__copy_size))
++ memset(to + (n - __copy_size), 0, __copy_size);
+
+ return __copy_size;
+ }
+diff --git a/arch/sh/include/asm/uaccess_64.h b/arch/sh/include/asm/uaccess_64.h
+index c01376c76b86..ca5073dd4596 100644
+--- a/arch/sh/include/asm/uaccess_64.h
++++ b/arch/sh/include/asm/uaccess_64.h
+@@ -24,6 +24,7 @@
+ #define __get_user_size(x,ptr,size,retval) \
+ do { \
+ retval = 0; \
++ x = 0; \
+ switch (size) { \
+ case 1: \
+ retval = __get_user_asm_b((void *)&x, \
+diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
+index 64ee103dc29d..dfb542c7cc71 100644
+--- a/arch/sparc/include/asm/uaccess_32.h
++++ b/arch/sparc/include/asm/uaccess_32.h
+@@ -328,8 +328,10 @@ static inline unsigned long copy_from_user(void *to, const void __user *from, un
+ {
+ if (n && __access_ok((unsigned long) from, n))
+ return __copy_user((__force void __user *) to, from, n);
+- else
++ else {
++ memset(to, 0, n);
+ return n;
++ }
+ }
+
+ static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n)
+diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
+index ace9dec050b1..d081e7e42fb3 100644
+--- a/arch/x86/include/asm/uaccess.h
++++ b/arch/x86/include/asm/uaccess.h
+@@ -391,7 +391,11 @@ do { \
+ #define __get_user_asm_ex(x, addr, itype, rtype, ltype) \
+ asm volatile("1: mov"itype" %1,%"rtype"0\n" \
+ "2:\n" \
+- _ASM_EXTABLE_EX(1b, 2b) \
++ ".section .fixup,\"ax\"\n" \
++ "3:xor"itype" %"rtype"0,%"rtype"0\n" \
++ " jmp 2b\n" \
++ ".previous\n" \
++ _ASM_EXTABLE_EX(1b, 3b) \
+ : ltype(x) : "m" (__m(addr)))
+
+ #define __put_user_nocheck(x, ptr, size) \
+diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c
+index 0122bec38564..f25799f351f7 100644
+--- a/crypto/blkcipher.c
++++ b/crypto/blkcipher.c
+@@ -233,6 +233,8 @@ static int blkcipher_walk_next(struct blkcipher_desc *desc,
+ return blkcipher_walk_done(desc, walk, -EINVAL);
+ }
+
++ bsize = min(walk->walk_blocksize, n);
++
+ walk->flags &= ~(BLKCIPHER_WALK_SLOW | BLKCIPHER_WALK_COPY |
+ BLKCIPHER_WALK_DIFF);
+ if (!scatterwalk_aligned(&walk->in, walk->alignmask) ||
+@@ -245,7 +247,6 @@ static int blkcipher_walk_next(struct blkcipher_desc *desc,
+ }
+ }
+
+- bsize = min(walk->walk_blocksize, n);
+ n = scatterwalk_clamp(&walk->in, n);
+ n = scatterwalk_clamp(&walk->out, n);
+
+diff --git a/crypto/cryptd.c b/crypto/cryptd.c
+index b0602ba03111..34e4dfafb94f 100644
+--- a/crypto/cryptd.c
++++ b/crypto/cryptd.c
+@@ -585,9 +585,14 @@ static int cryptd_hash_export(struct ahash_request *req, void *out)
+
+ static int cryptd_hash_import(struct ahash_request *req, const void *in)
+ {
+- struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
++ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
++ struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm);
++ struct shash_desc *desc = cryptd_shash_desc(req);
++
++ desc->tfm = ctx->child;
++ desc->flags = req->base.flags;
+
+- return crypto_shash_import(&rctx->desc, in);
++ return crypto_shash_import(desc, in);
+ }
+
+ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
+diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c
+index 60397ec77ff7..27fd0dacad5f 100644
+--- a/drivers/bus/arm-ccn.c
++++ b/drivers/bus/arm-ccn.c
+@@ -804,6 +804,10 @@ static void arm_ccn_pmu_xp_dt_config(struct perf_event *event, int enable)
+ struct arm_ccn_component *xp;
+ u32 val, dt_cfg;
+
++ /* Nothing to do for cycle counter */
++ if (hw->idx == CCN_IDX_PMU_CYCLE_COUNTER)
++ return;
++
+ if (CCN_CONFIG_TYPE(event->attr.config) == CCN_TYPE_XP)
+ xp = &ccn->xp[CCN_CONFIG_XP(event->attr.config)];
+ else
+@@ -901,7 +905,7 @@ static void arm_ccn_pmu_xp_watchpoint_config(struct perf_event *event)
+
+ /* Comparison values */
+ writel(cmp_l & 0xffffffff, source->base + CCN_XP_DT_CMP_VAL_L(wp));
+- writel((cmp_l >> 32) & 0xefffffff,
++ writel((cmp_l >> 32) & 0x7fffffff,
+ source->base + CCN_XP_DT_CMP_VAL_L(wp) + 4);
+ writel(cmp_h & 0xffffffff, source->base + CCN_XP_DT_CMP_VAL_H(wp));
+ writel((cmp_h >> 32) & 0x0fffffff,
+@@ -909,7 +913,7 @@ static void arm_ccn_pmu_xp_watchpoint_config(struct perf_event *event)
+
+ /* Mask */
+ writel(mask_l & 0xffffffff, source->base + CCN_XP_DT_CMP_MASK_L(wp));
+- writel((mask_l >> 32) & 0xefffffff,
++ writel((mask_l >> 32) & 0x7fffffff,
+ source->base + CCN_XP_DT_CMP_MASK_L(wp) + 4);
+ writel(mask_h & 0xffffffff, source->base + CCN_XP_DT_CMP_MASK_H(wp));
+ writel((mask_h >> 32) & 0x0fffffff,
+diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+index 767d0eaabe97..3101f57492c0 100644
+--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
++++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+@@ -316,19 +316,19 @@ atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane,
+ u32 *coeff_tab = heo_upscaling_ycoef;
+ u32 max_memsize;
+
+- if (state->crtc_w < state->src_w)
++ if (state->crtc_h < state->src_h)
+ coeff_tab = heo_downscaling_ycoef;
+ for (i = 0; i < ARRAY_SIZE(heo_upscaling_ycoef); i++)
+ atmel_hlcdc_layer_update_cfg(&plane->layer,
+ 33 + i,
+ 0xffffffff,
+ coeff_tab[i]);
+- factor = ((8 * 256 * state->src_w) - (256 * 4)) /
+- state->crtc_w;
++ factor = ((8 * 256 * state->src_h) - (256 * 4)) /
++ state->crtc_h;
+ factor++;
+- max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
++ max_memsize = ((factor * state->crtc_h) + (256 * 4)) /
+ 2048;
+- if (max_memsize > state->src_w)
++ if (max_memsize > state->src_h)
+ factor--;
+ factor_reg |= (factor << 16) | 0x80000000;
+ }
+diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
+index 9cfcd0aef0df..92c4698e8427 100644
+--- a/drivers/gpu/drm/drm_ioc32.c
++++ b/drivers/gpu/drm/drm_ioc32.c
+@@ -1018,6 +1018,7 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
+ return 0;
+ }
+
++#if defined(CONFIG_X86) || defined(CONFIG_IA64)
+ typedef struct drm_mode_fb_cmd232 {
+ u32 fb_id;
+ u32 width;
+@@ -1074,6 +1075,7 @@ static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
+
+ return 0;
+ }
++#endif
+
+ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
+@@ -1107,7 +1109,9 @@ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
+ #endif
+ [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
++#if defined(CONFIG_X86) || defined(CONFIG_IA64)
+ [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
++#endif
+ };
+
+ /**
+diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c
+index 78c911be115d..6bf81d95a3f4 100644
+--- a/drivers/iio/accel/kxsd9.c
++++ b/drivers/iio/accel/kxsd9.c
+@@ -166,6 +166,7 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev,
+ ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
+ if (ret < 0)
+ goto error_ret;
++ *val = 0;
+ *val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK];
+ ret = IIO_VAL_INT_PLUS_MICRO;
+ break;
+diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
+index ad0a7e8c2c2b..8b8cacbaf20d 100644
+--- a/drivers/net/can/flexcan.c
++++ b/drivers/net/can/flexcan.c
+@@ -1273,11 +1273,10 @@ static int __maybe_unused flexcan_suspend(struct device *device)
+ struct flexcan_priv *priv = netdev_priv(dev);
+ int err;
+
+- err = flexcan_chip_disable(priv);
+- if (err)
+- return err;
+-
+ if (netif_running(dev)) {
++ err = flexcan_chip_disable(priv);
++ if (err)
++ return err;
+ netif_stop_queue(dev);
+ netif_device_detach(dev);
+ }
+@@ -1290,13 +1289,17 @@ static int __maybe_unused flexcan_resume(struct device *device)
+ {
+ struct net_device *dev = dev_get_drvdata(device);
+ struct flexcan_priv *priv = netdev_priv(dev);
++ int err;
+
+ priv->can.state = CAN_STATE_ERROR_ACTIVE;
+ if (netif_running(dev)) {
+ netif_device_attach(dev);
+ netif_start_queue(dev);
++ err = flexcan_chip_enable(priv);
++ if (err)
++ return err;
+ }
+- return flexcan_chip_enable(priv);
++ return 0;
+ }
+
+ static SIMPLE_DEV_PM_OPS(flexcan_pm_ops, flexcan_suspend, flexcan_resume);
+diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
+index d5f2fbf62d72..534b2b87bd5d 100644
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -1541,13 +1541,13 @@ static int ath9k_sta_state(struct ieee80211_hw *hw,
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ int ret = 0;
+
+- if (old_state == IEEE80211_STA_AUTH &&
+- new_state == IEEE80211_STA_ASSOC) {
++ if (old_state == IEEE80211_STA_NOTEXIST &&
++ new_state == IEEE80211_STA_NONE) {
+ ret = ath9k_sta_add(hw, vif, sta);
+ ath_dbg(common, CONFIG,
+ "Add station: %pM\n", sta->addr);
+- } else if (old_state == IEEE80211_STA_ASSOC &&
+- new_state == IEEE80211_STA_AUTH) {
++ } else if (old_state == IEEE80211_STA_NONE &&
++ new_state == IEEE80211_STA_NOTEXIST) {
+ ret = ath9k_sta_remove(hw, vif, sta);
+ ath_dbg(common, CONFIG,
+ "Remove station: %pM\n", sta->addr);
+diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
+index fa09d4be2b53..2b456ca69d5c 100644
+--- a/drivers/scsi/constants.c
++++ b/drivers/scsi/constants.c
+@@ -1181,8 +1181,9 @@ static const char * const snstext[] = {
+
+ /* Get sense key string or NULL if not available */
+ const char *
+-scsi_sense_key_string(unsigned char key) {
+- if (key <= 0xE)
++scsi_sense_key_string(unsigned char key)
++{
++ if (key < ARRAY_SIZE(snstext))
+ return snstext[key];
+ return NULL;
+ }
+diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
+index d93e43cfb6f8..ebcf40c2f12b 100644
+--- a/drivers/usb/chipidea/udc.c
++++ b/drivers/usb/chipidea/udc.c
+@@ -939,6 +939,15 @@ static int isr_setup_status_phase(struct ci_hdrc *ci)
+ int retval;
+ struct ci_hw_ep *hwep;
+
++ /*
++ * Unexpected USB controller behavior, caused by bad signal integrity
++ * or ground reference problems, can lead to isr_setup_status_phase
++ * being called with ci->status equal to NULL.
++ * If this situation occurs, you should review your USB hardware design.
++ */
++ if (WARN_ON_ONCE(!ci->status))
++ return -EPIPE;
++
+ hwep = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in;
+ ci->status->context = ci;
+ ci->status->complete = isr_setup_status_complete;
+diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
+index 894894f2ff93..81336acc7040 100644
+--- a/drivers/usb/core/config.c
++++ b/drivers/usb/core/config.c
+@@ -184,8 +184,10 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
+ memcpy(&endpoint->desc, d, n);
+ INIT_LIST_HEAD(&endpoint->urb_list);
+
+- /* Fix up bInterval values outside the legal range. Use 32 ms if no
+- * proper value can be guessed. */
++ /*
++ * Fix up bInterval values outside the legal range.
++ * Use 10 or 8 ms if no proper value can be guessed.
++ */
+ i = 0; /* i = min, j = max, n = default */
+ j = 255;
+ if (usb_endpoint_xfer_int(d)) {
+@@ -193,13 +195,15 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
+ switch (to_usb_device(ddev)->speed) {
+ case USB_SPEED_SUPER:
+ case USB_SPEED_HIGH:
+- /* Many device manufacturers are using full-speed
++ /*
++ * Many device manufacturers are using full-speed
+ * bInterval values in high-speed interrupt endpoint
+- * descriptors. Try to fix those and fall back to a
+- * 32 ms default value otherwise. */
++ * descriptors. Try to fix those and fall back to an
++ * 8-ms default value otherwise.
++ */
+ n = fls(d->bInterval*8);
+ if (n == 0)
+- n = 9; /* 32 ms = 2^(9-1) uframes */
++ n = 7; /* 8 ms = 2^(7-1) uframes */
+ j = 16;
+
+ /*
+@@ -214,10 +218,12 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
+ }
+ break;
+ default: /* USB_SPEED_FULL or _LOW */
+- /* For low-speed, 10 ms is the official minimum.
++ /*
++ * For low-speed, 10 ms is the official minimum.
+ * But some "overclocked" devices might want faster
+- * polling so we'll allow it. */
+- n = 32;
++ * polling so we'll allow it.
++ */
++ n = 10;
+ break;
+ }
+ } else if (usb_endpoint_xfer_isoc(d)) {
+@@ -225,10 +231,10 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
+ j = 16;
+ switch (to_usb_device(ddev)->speed) {
+ case USB_SPEED_HIGH:
+- n = 9; /* 32 ms = 2^(9-1) uframes */
++ n = 7; /* 8 ms = 2^(7-1) uframes */
+ break;
+ default: /* USB_SPEED_FULL */
+- n = 6; /* 32 ms = 2^(6-1) frames */
++ n = 4; /* 8 ms = 2^(4-1) frames */
+ break;
+ }
+ }
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index f7e917866e05..6a2911743829 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -846,6 +846,10 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg)
+ spin_lock_irqsave(&xhci->lock, flags);
+
+ ep->stop_cmds_pending--;
++ if (xhci->xhc_state & XHCI_STATE_REMOVING) {
++ spin_unlock_irqrestore(&xhci->lock, flags);
++ return;
++ }
+ if (xhci->xhc_state & XHCI_STATE_DYING) {
+ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+ "Stop EP timer ran, but another timer marked "
+@@ -899,7 +903,7 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg)
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+ "Calling usb_hc_died()");
+- usb_hc_died(xhci_to_hcd(xhci)->primary_hcd);
++ usb_hc_died(xhci_to_hcd(xhci));
+ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+ "xHCI host controller is dead.");
+ }
+diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c
+index 9a705b15b3a1..cf274b8c63fe 100644
+--- a/drivers/usb/renesas_usbhs/mod.c
++++ b/drivers/usb/renesas_usbhs/mod.c
+@@ -277,9 +277,16 @@ static irqreturn_t usbhs_interrupt(int irq, void *data)
+ usbhs_write(priv, INTSTS0, ~irq_state.intsts0 & INTSTS0_MAGIC);
+ usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC);
+
+- usbhs_write(priv, BRDYSTS, ~irq_state.brdysts);
++ /*
++ * The driver should not clear the xxxSTS after the line of
++ * "call irq callback functions" because each "if" statement is
++ * possible to call the callback function for avoiding any side effects.
++ */
++ if (irq_state.intsts0 & BRDY)
++ usbhs_write(priv, BRDYSTS, ~irq_state.brdysts);
+ usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts);
+- usbhs_write(priv, BEMPSTS, ~irq_state.bempsts);
++ if (irq_state.intsts0 & BEMP)
++ usbhs_write(priv, BEMPSTS, ~irq_state.bempsts);
+
+ /*
+ * call irq callback functions
+diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
+index a204782ae530..e98b6e57b703 100644
+--- a/drivers/usb/serial/usb-serial-simple.c
++++ b/drivers/usb/serial/usb-serial-simple.c
+@@ -54,7 +54,8 @@ DEVICE(funsoft, FUNSOFT_IDS);
+ /* Infineon Flashloader driver */
+ #define FLASHLOADER_IDS() \
+ { USB_DEVICE_INTERFACE_CLASS(0x058b, 0x0041, USB_CLASS_CDC_DATA) }, \
+- { USB_DEVICE(0x8087, 0x0716) }
++ { USB_DEVICE(0x8087, 0x0716) }, \
++ { USB_DEVICE(0x8087, 0x0801) }
+ DEVICE(flashloader, FLASHLOADER_IDS);
+
+ /* Google Serial USB SubClass */
+diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
+index 5b700ef1e59d..6196b5eaf9a5 100644
+--- a/fs/autofs4/autofs_i.h
++++ b/fs/autofs4/autofs_i.h
+@@ -79,9 +79,13 @@ struct autofs_info {
+ };
+
+ #define AUTOFS_INF_EXPIRING (1<<0) /* dentry is in the process of expiring */
+-#define AUTOFS_INF_NO_RCU (1<<1) /* the dentry is being considered
++#define AUTOFS_INF_WANT_EXPIRE (1<<1) /* the dentry is being considered
+ * for expiry, so RCU_walk is
+- * not permitted
++ * not permitted. If it progresses to
++ * actual expiry attempt, the flag is
++ * not cleared when EXPIRING is set -
++ * in that case it gets cleared only
++ * when it comes to clearing EXPIRING.
+ */
+ #define AUTOFS_INF_PENDING (1<<2) /* dentry pending mount */
+
+diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
+index 1cebc3c52fa5..7a5a598a2d94 100644
+--- a/fs/autofs4/expire.c
++++ b/fs/autofs4/expire.c
+@@ -315,19 +315,17 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
+ if (ino->flags & AUTOFS_INF_PENDING)
+ goto out;
+ if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
+- ino->flags |= AUTOFS_INF_NO_RCU;
++ ino->flags |= AUTOFS_INF_WANT_EXPIRE;
+ spin_unlock(&sbi->fs_lock);
+ synchronize_rcu();
+ spin_lock(&sbi->fs_lock);
+ if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
+ ino->flags |= AUTOFS_INF_EXPIRING;
+- smp_mb();
+- ino->flags &= ~AUTOFS_INF_NO_RCU;
+ init_completion(&ino->expire_complete);
+ spin_unlock(&sbi->fs_lock);
+ return root;
+ }
+- ino->flags &= ~AUTOFS_INF_NO_RCU;
++ ino->flags &= ~AUTOFS_INF_WANT_EXPIRE;
+ }
+ out:
+ spin_unlock(&sbi->fs_lock);
+@@ -417,6 +415,7 @@ static struct dentry *should_expire(struct dentry *dentry,
+ }
+ return NULL;
+ }
++
+ /*
+ * Find an eligible tree to time-out
+ * A tree is eligible if :-
+@@ -432,6 +431,7 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
+ struct dentry *root = sb->s_root;
+ struct dentry *dentry;
+ struct dentry *expired;
++ struct dentry *found;
+ struct autofs_info *ino;
+
+ if (!root)
+@@ -442,48 +442,54 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
+
+ dentry = NULL;
+ while ((dentry = get_next_positive_subdir(dentry, root))) {
++ int flags = how;
++
+ spin_lock(&sbi->fs_lock);
+ ino = autofs4_dentry_ino(dentry);
+- if (ino->flags & AUTOFS_INF_NO_RCU)
+- expired = NULL;
+- else
+- expired = should_expire(dentry, mnt, timeout, how);
+- if (!expired) {
++ if (ino->flags & AUTOFS_INF_WANT_EXPIRE) {
+ spin_unlock(&sbi->fs_lock);
+ continue;
+ }
++ spin_unlock(&sbi->fs_lock);
++
++ expired = should_expire(dentry, mnt, timeout, flags);
++ if (!expired)
++ continue;
++
++ spin_lock(&sbi->fs_lock);
+ ino = autofs4_dentry_ino(expired);
+- ino->flags |= AUTOFS_INF_NO_RCU;
++ ino->flags |= AUTOFS_INF_WANT_EXPIRE;
+ spin_unlock(&sbi->fs_lock);
+ synchronize_rcu();
+- spin_lock(&sbi->fs_lock);
+- if (should_expire(expired, mnt, timeout, how)) {
+- if (expired != dentry)
+- dput(dentry);
+- goto found;
+- }
+
+- ino->flags &= ~AUTOFS_INF_NO_RCU;
++ /* Make sure a reference is not taken on found if
++ * things have changed.
++ */
++ flags &= ~AUTOFS_EXP_LEAVES;
++ found = should_expire(expired, mnt, timeout, how);
++ if (!found || found != expired)
++ /* Something has changed, continue */
++ goto next;
++
+ if (expired != dentry)
+- dput(expired);
++ dput(dentry);
++
++ spin_lock(&sbi->fs_lock);
++ goto found;
++next:
++ spin_lock(&sbi->fs_lock);
++ ino->flags &= ~AUTOFS_INF_WANT_EXPIRE;
+ spin_unlock(&sbi->fs_lock);
++ if (expired != dentry)
++ dput(expired);
+ }
+ return NULL;
+
+ found:
+ DPRINTK("returning %p %pd", expired, expired);
+ ino->flags |= AUTOFS_INF_EXPIRING;
+- smp_mb();
+- ino->flags &= ~AUTOFS_INF_NO_RCU;
+ init_completion(&ino->expire_complete);
+ spin_unlock(&sbi->fs_lock);
+- spin_lock(&sbi->lookup_lock);
+- spin_lock(&expired->d_parent->d_lock);
+- spin_lock_nested(&expired->d_lock, DENTRY_D_LOCK_NESTED);
+- list_move(&expired->d_parent->d_subdirs, &expired->d_child);
+- spin_unlock(&expired->d_lock);
+- spin_unlock(&expired->d_parent->d_lock);
+- spin_unlock(&sbi->lookup_lock);
+ return expired;
+ }
+
+@@ -492,15 +498,27 @@ int autofs4_expire_wait(struct dentry *dentry, int rcu_walk)
+ struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ int status;
++ int state;
+
+ /* Block on any pending expire */
+- if (!(ino->flags & (AUTOFS_INF_EXPIRING | AUTOFS_INF_NO_RCU)))
++ if (!(ino->flags & AUTOFS_INF_WANT_EXPIRE))
+ return 0;
+ if (rcu_walk)
+ return -ECHILD;
+
++retry:
+ spin_lock(&sbi->fs_lock);
+- if (ino->flags & AUTOFS_INF_EXPIRING) {
++ state = ino->flags & (AUTOFS_INF_WANT_EXPIRE | AUTOFS_INF_EXPIRING);
++ if (state == AUTOFS_INF_WANT_EXPIRE) {
++ spin_unlock(&sbi->fs_lock);
++ /*
++ * Possibly being selected for expire, wait until
++ * it's selected or not.
++ */
++ schedule_timeout_uninterruptible(HZ/10);
++ goto retry;
++ }
++ if (state & AUTOFS_INF_EXPIRING) {
+ spin_unlock(&sbi->fs_lock);
+
+ DPRINTK("waiting for expire %p name=%pd", dentry, dentry);
+@@ -551,7 +569,7 @@ int autofs4_expire_run(struct super_block *sb,
+ ino = autofs4_dentry_ino(dentry);
+ /* avoid rapid-fire expire attempts if expiry fails */
+ ino->last_used = now;
+- ino->flags &= ~AUTOFS_INF_EXPIRING;
++ ino->flags &= ~(AUTOFS_INF_EXPIRING|AUTOFS_INF_WANT_EXPIRE);
+ complete_all(&ino->expire_complete);
+ spin_unlock(&sbi->fs_lock);
+
+@@ -579,7 +597,7 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
+ spin_lock(&sbi->fs_lock);
+ /* avoid rapid-fire expire attempts if expiry fails */
+ ino->last_used = now;
+- ino->flags &= ~AUTOFS_INF_EXPIRING;
++ ino->flags &= ~(AUTOFS_INF_EXPIRING|AUTOFS_INF_WANT_EXPIRE);
+ complete_all(&ino->expire_complete);
+ spin_unlock(&sbi->fs_lock);
+ dput(dentry);
+diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
+index c6d7d3dbd52a..7a54c6a867c8 100644
+--- a/fs/autofs4/root.c
++++ b/fs/autofs4/root.c
+@@ -455,7 +455,7 @@ static int autofs4_d_manage(struct dentry *dentry, bool rcu_walk)
+ * a mount-trap.
+ */
+ struct inode *inode;
+- if (ino->flags & (AUTOFS_INF_EXPIRING | AUTOFS_INF_NO_RCU))
++ if (ino->flags & AUTOFS_INF_WANT_EXPIRE)
+ return 0;
+ if (d_mountpoint(dentry))
+ return 0;
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index 2eca30adb3e3..ff742d30ba60 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -1610,6 +1610,9 @@ static noinline int btrfs_ioctl_snap_create_transid(struct file *file,
+ int namelen;
+ int ret = 0;
+
++ if (!S_ISDIR(file_inode(file)->i_mode))
++ return -ENOTDIR;
++
+ ret = mnt_want_write_file(file);
+ if (ret)
+ goto out;
+@@ -1667,6 +1670,9 @@ static noinline int btrfs_ioctl_snap_create(struct file *file,
+ struct btrfs_ioctl_vol_args *vol_args;
+ int ret;
+
++ if (!S_ISDIR(file_inode(file)->i_mode))
++ return -ENOTDIR;
++
+ vol_args = memdup_user(arg, sizeof(*vol_args));
+ if (IS_ERR(vol_args))
+ return PTR_ERR(vol_args);
+@@ -1690,6 +1696,9 @@ static noinline int btrfs_ioctl_snap_create_v2(struct file *file,
+ bool readonly = false;
+ struct btrfs_qgroup_inherit *inherit = NULL;
+
++ if (!S_ISDIR(file_inode(file)->i_mode))
++ return -ENOTDIR;
++
+ vol_args = memdup_user(arg, sizeof(*vol_args));
+ if (IS_ERR(vol_args))
+ return PTR_ERR(vol_args);
+@@ -2318,6 +2327,9 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file,
+ int ret;
+ int err = 0;
+
++ if (!S_ISDIR(dir->i_mode))
++ return -ENOTDIR;
++
+ vol_args = memdup_user(arg, sizeof(*vol_args));
+ if (IS_ERR(vol_args))
+ return PTR_ERR(vol_args);
+diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
+index 5c222f3c4841..bd3c92b4bcee 100644
+--- a/fs/btrfs/tree-log.c
++++ b/fs/btrfs/tree-log.c
+@@ -2748,6 +2748,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
+
+ if (log_root_tree->log_transid_committed >= root_log_ctx.log_transid) {
+ blk_finish_plug(&plug);
++ list_del_init(&root_log_ctx.list);
+ mutex_unlock(&log_root_tree->log_mutex);
+ ret = root_log_ctx.log_ret;
+ goto out;
+diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
+index 2cb9e178d1c5..4196aa567784 100644
+--- a/fs/ext4/ioctl.c
++++ b/fs/ext4/ioctl.c
+@@ -637,7 +637,13 @@ resizefs_out:
+ goto encryption_policy_out;
+ }
+
++ err = mnt_want_write_file(filp);
++ if (err)
++ goto encryption_policy_out;
++
+ err = ext4_process_policy(&policy, inode);
++
++ mnt_drop_write_file(filp);
+ encryption_policy_out:
+ return err;
+ #else
+diff --git a/fs/fuse/file.c b/fs/fuse/file.c
+index 5cae35490b37..d8f29ef2d819 100644
+--- a/fs/fuse/file.c
++++ b/fs/fuse/file.c
+@@ -540,13 +540,13 @@ void fuse_read_fill(struct fuse_req *req, struct file *file, loff_t pos,
+ req->out.args[0].size = count;
+ }
+
+-static void fuse_release_user_pages(struct fuse_req *req, int write)
++static void fuse_release_user_pages(struct fuse_req *req, bool should_dirty)
+ {
+ unsigned i;
+
+ for (i = 0; i < req->num_pages; i++) {
+ struct page *page = req->pages[i];
+- if (write)
++ if (should_dirty)
+ set_page_dirty_lock(page);
+ put_page(page);
+ }
+@@ -1331,6 +1331,7 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter,
+ loff_t *ppos, int flags)
+ {
+ int write = flags & FUSE_DIO_WRITE;
++ bool should_dirty = !write && iter_is_iovec(iter);
+ int cuse = flags & FUSE_DIO_CUSE;
+ struct file *file = io->file;
+ struct inode *inode = file->f_mapping->host;
+@@ -1375,7 +1376,7 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter,
+ nres = fuse_send_read(req, io, pos, nbytes, owner);
+
+ if (!io->async)
+- fuse_release_user_pages(req, !write);
++ fuse_release_user_pages(req, should_dirty);
+ if (req->out.h.error) {
+ if (!res)
+ res = req->out.h.error;
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index eef16ec0638a..319ba6814899 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -7281,12 +7281,20 @@ static int _nfs4_proc_create_session(struct nfs_client *clp,
+ status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
+ trace_nfs4_create_session(clp, status);
+
++ switch (status) {
++ case -NFS4ERR_STALE_CLIENTID:
++ case -NFS4ERR_DELAY:
++ case -ETIMEDOUT:
++ case -EACCES:
++ case -EAGAIN:
++ goto out;
++ };
++
++ clp->cl_seqid++;
+ if (!status) {
+ /* Verify the session's negotiated channel_attrs values */
+ status = nfs4_verify_channel_attrs(&args, &res);
+ /* Increment the clientid slot sequence id */
+- if (clp->cl_seqid == res.seqid)
+- clp->cl_seqid++;
+ if (status)
+ goto out;
+ nfs4_update_session(session, &res);
+diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
+index d2f97ecca6a5..e0e5f7c3c99f 100644
+--- a/fs/notify/fanotify/fanotify.c
++++ b/fs/notify/fanotify/fanotify.c
+@@ -67,18 +67,7 @@ static int fanotify_get_response(struct fsnotify_group *group,
+
+ pr_debug("%s: group=%p event=%p\n", __func__, group, event);
+
+- wait_event(group->fanotify_data.access_waitq, event->response ||
+- atomic_read(&group->fanotify_data.bypass_perm));
+-
+- if (!event->response) { /* bypass_perm set */
+- /*
+- * Event was canceled because group is being destroyed. Remove
+- * it from group's event list because we are responsible for
+- * freeing the permission event.
+- */
+- fsnotify_remove_event(group, &event->fae.fse);
+- return 0;
+- }
++ wait_event(group->fanotify_data.access_waitq, event->response);
+
+ /* userspace responded, convert to something usable */
+ switch (event->response) {
+diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
+index cf275500a665..45ca844d1323 100644
+--- a/fs/notify/fanotify/fanotify_user.c
++++ b/fs/notify/fanotify/fanotify_user.c
+@@ -358,16 +358,20 @@ static int fanotify_release(struct inode *ignored, struct file *file)
+
+ #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
+ struct fanotify_perm_event_info *event, *next;
++ struct fsnotify_event *fsn_event;
+
+ /*
+- * There may be still new events arriving in the notification queue
+- * but since userspace cannot use fanotify fd anymore, no event can
+- * enter or leave access_list by now.
++ * Stop new events from arriving in the notification queue. since
++ * userspace cannot use fanotify fd anymore, no event can enter or
++ * leave access_list by now either.
+ */
+- spin_lock(&group->fanotify_data.access_lock);
+-
+- atomic_inc(&group->fanotify_data.bypass_perm);
++ fsnotify_group_stop_queueing(group);
+
++ /*
++ * Process all permission events on access_list and notification queue
++ * and simulate reply from userspace.
++ */
++ spin_lock(&group->fanotify_data.access_lock);
+ list_for_each_entry_safe(event, next, &group->fanotify_data.access_list,
+ fae.fse.list) {
+ pr_debug("%s: found group=%p event=%p\n", __func__, group,
+@@ -379,12 +383,21 @@ static int fanotify_release(struct inode *ignored, struct file *file)
+ spin_unlock(&group->fanotify_data.access_lock);
+
+ /*
+- * Since bypass_perm is set, newly queued events will not wait for
+- * access response. Wake up the already sleeping ones now.
+- * synchronize_srcu() in fsnotify_destroy_group() will wait for all
+- * processes sleeping in fanotify_handle_event() waiting for access
+- * response and thus also for all permission events to be freed.
++ * Destroy all non-permission events. For permission events just
++ * dequeue them and set the response. They will be freed once the
++ * response is consumed and fanotify_get_response() returns.
+ */
++ mutex_lock(&group->notification_mutex);
++ while (!fsnotify_notify_queue_is_empty(group)) {
++ fsn_event = fsnotify_remove_first_event(group);
++ if (!(fsn_event->mask & FAN_ALL_PERM_EVENTS))
++ fsnotify_destroy_event(group, fsn_event);
++ else
++ FANOTIFY_PE(fsn_event)->response = FAN_ALLOW;
++ }
++ mutex_unlock(&group->notification_mutex);
++
++ /* Response for all permission events it set, wakeup waiters */
+ wake_up(&group->fanotify_data.access_waitq);
+ #endif
+
+@@ -751,7 +764,6 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags)
+ spin_lock_init(&group->fanotify_data.access_lock);
+ init_waitqueue_head(&group->fanotify_data.access_waitq);
+ INIT_LIST_HEAD(&group->fanotify_data.access_list);
+- atomic_set(&group->fanotify_data.bypass_perm, 0);
+ #endif
+ switch (flags & FAN_ALL_CLASS_BITS) {
+ case FAN_CLASS_NOTIF:
+diff --git a/fs/notify/group.c b/fs/notify/group.c
+index d16b62cb2854..18eb30c6bd8f 100644
+--- a/fs/notify/group.c
++++ b/fs/notify/group.c
+@@ -40,6 +40,17 @@ static void fsnotify_final_destroy_group(struct fsnotify_group *group)
+ }
+
+ /*
++ * Stop queueing new events for this group. Once this function returns
++ * fsnotify_add_event() will not add any new events to the group's queue.
++ */
++void fsnotify_group_stop_queueing(struct fsnotify_group *group)
++{
++ mutex_lock(&group->notification_mutex);
++ group->shutdown = true;
++ mutex_unlock(&group->notification_mutex);
++}
++
++/*
+ * Trying to get rid of a group. Remove all marks, flush all events and release
+ * the group reference.
+ * Note that another thread calling fsnotify_clear_marks_by_group() may still
+@@ -47,6 +58,14 @@ static void fsnotify_final_destroy_group(struct fsnotify_group *group)
+ */
+ void fsnotify_destroy_group(struct fsnotify_group *group)
+ {
++ /*
++ * Stop queueing new events. The code below is careful enough to not
++ * require this but fanotify needs to stop queuing events even before
++ * fsnotify_destroy_group() is called and this makes the other callers
++ * of fsnotify_destroy_group() to see the same behavior.
++ */
++ fsnotify_group_stop_queueing(group);
++
+ /* clear all inode marks for this group */
+ fsnotify_clear_marks_by_group(group);
+
+diff --git a/fs/notify/notification.c b/fs/notify/notification.c
+index a95d8e037aeb..e455e83ceeeb 100644
+--- a/fs/notify/notification.c
++++ b/fs/notify/notification.c
+@@ -82,7 +82,8 @@ void fsnotify_destroy_event(struct fsnotify_group *group,
+ * Add an event to the group notification queue. The group can later pull this
+ * event off the queue to deal with. The function returns 0 if the event was
+ * added to the queue, 1 if the event was merged with some other queued event,
+- * 2 if the queue of events has overflown.
++ * 2 if the event was not queued - either the queue of events has overflown
++ * or the group is shutting down.
+ */
+ int fsnotify_add_event(struct fsnotify_group *group,
+ struct fsnotify_event *event,
+@@ -96,6 +97,11 @@ int fsnotify_add_event(struct fsnotify_group *group,
+
+ mutex_lock(&group->notification_mutex);
+
++ if (group->shutdown) {
++ mutex_unlock(&group->notification_mutex);
++ return 2;
++ }
++
+ if (group->q_len >= group->max_events) {
+ ret = 2;
+ /* Queue overflow event only if it isn't already queued */
+@@ -126,21 +132,6 @@ queue:
+ }
+
+ /*
+- * Remove @event from group's notification queue. It is the responsibility of
+- * the caller to destroy the event.
+- */
+-void fsnotify_remove_event(struct fsnotify_group *group,
+- struct fsnotify_event *event)
+-{
+- mutex_lock(&group->notification_mutex);
+- if (!list_empty(&event->list)) {
+- list_del_init(&event->list);
+- group->q_len--;
+- }
+- mutex_unlock(&group->notification_mutex);
+-}
+-
+-/*
+ * Remove and return the first event from the notification list. It is the
+ * responsibility of the caller to destroy the obtained event
+ */
+diff --git a/fs/ocfs2/dlm/dlmconvert.c b/fs/ocfs2/dlm/dlmconvert.c
+index f90931335c6b..2e11658676eb 100644
+--- a/fs/ocfs2/dlm/dlmconvert.c
++++ b/fs/ocfs2/dlm/dlmconvert.c
+@@ -262,7 +262,6 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm,
+ struct dlm_lock *lock, int flags, int type)
+ {
+ enum dlm_status status;
+- u8 old_owner = res->owner;
+
+ mlog(0, "type=%d, convert_type=%d, busy=%d\n", lock->ml.type,
+ lock->ml.convert_type, res->state & DLM_LOCK_RES_IN_PROGRESS);
+@@ -329,7 +328,6 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm,
+
+ spin_lock(&res->spinlock);
+ res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
+- lock->convert_pending = 0;
+ /* if it failed, move it back to granted queue.
+ * if master returns DLM_NORMAL and then down before sending ast,
+ * it may have already been moved to granted queue, reset to
+@@ -338,12 +336,14 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm,
+ if (status != DLM_NOTQUEUED)
+ dlm_error(status);
+ dlm_revert_pending_convert(res, lock);
+- } else if ((res->state & DLM_LOCK_RES_RECOVERING) ||
+- (old_owner != res->owner)) {
+- mlog(0, "res %.*s is in recovering or has been recovered.\n",
+- res->lockname.len, res->lockname.name);
++ } else if (!lock->convert_pending) {
++ mlog(0, "%s: res %.*s, owner died and lock has been moved back "
++ "to granted list, retry convert.\n",
++ dlm->name, res->lockname.len, res->lockname.name);
+ status = DLM_RECOVERING;
+ }
++
++ lock->convert_pending = 0;
+ bail:
+ spin_unlock(&res->spinlock);
+
+diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
+index 3f1ee404f40f..e00be7f509db 100644
+--- a/fs/ocfs2/file.c
++++ b/fs/ocfs2/file.c
+@@ -1522,7 +1522,8 @@ static int ocfs2_zero_partial_clusters(struct inode *inode,
+ u64 start, u64 len)
+ {
+ int ret = 0;
+- u64 tmpend, end = start + len;
++ u64 tmpend = 0;
++ u64 end = start + len;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ unsigned int csize = osb->s_clustersize;
+ handle_t *handle;
+@@ -1554,18 +1555,31 @@ static int ocfs2_zero_partial_clusters(struct inode *inode,
+ }
+
+ /*
+- * We want to get the byte offset of the end of the 1st cluster.
++ * If start is on a cluster boundary and end is somewhere in another
++ * cluster, we have not COWed the cluster starting at start, unless
++ * end is also within the same cluster. So, in this case, we skip this
++ * first call to ocfs2_zero_range_for_truncate() truncate and move on
++ * to the next one.
+ */
+- tmpend = (u64)osb->s_clustersize + (start & ~(osb->s_clustersize - 1));
+- if (tmpend > end)
+- tmpend = end;
++ if ((start & (csize - 1)) != 0) {
++ /*
++ * We want to get the byte offset of the end of the 1st
++ * cluster.
++ */
++ tmpend = (u64)osb->s_clustersize +
++ (start & ~(osb->s_clustersize - 1));
++ if (tmpend > end)
++ tmpend = end;
+
+- trace_ocfs2_zero_partial_clusters_range1((unsigned long long)start,
+- (unsigned long long)tmpend);
++ trace_ocfs2_zero_partial_clusters_range1(
++ (unsigned long long)start,
++ (unsigned long long)tmpend);
+
+- ret = ocfs2_zero_range_for_truncate(inode, handle, start, tmpend);
+- if (ret)
+- mlog_errno(ret);
++ ret = ocfs2_zero_range_for_truncate(inode, handle, start,
++ tmpend);
++ if (ret)
++ mlog_errno(ret);
++ }
+
+ if (tmpend < end) {
+ /*
+diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
+index c9b740111526..f60b2c745d02 100644
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -679,11 +679,11 @@ retry:
+ goto out_dput;
+
+ err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT);
+- if (err && err != -ENODATA)
++ if (err && err != -ENODATA && err != -EOPNOTSUPP)
+ goto out_dput;
+
+ err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_ACCESS);
+- if (err && err != -ENODATA)
++ if (err && err != -ENODATA && err != -EOPNOTSUPP)
+ goto out_dput;
+
+ /* Clear any inherited mode bits */
+diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h
+index 72d8803832ff..32901d11f8c4 100644
+--- a/include/asm-generic/uaccess.h
++++ b/include/asm-generic/uaccess.h
+@@ -163,9 +163,10 @@ static inline __must_check long __copy_to_user(void __user *to,
+
+ #define put_user(x, ptr) \
+ ({ \
++ void *__p = (ptr); \
+ might_fault(); \
+- access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)) ? \
+- __put_user(x, ptr) : \
++ access_ok(VERIFY_WRITE, __p, sizeof(*ptr)) ? \
++ __put_user((x), ((__typeof__(*(ptr)) *)__p)) : \
+ -EFAULT; \
+ })
+
+@@ -225,17 +226,22 @@ extern int __put_user_bad(void) __attribute__((noreturn));
+
+ #define get_user(x, ptr) \
+ ({ \
++ const void *__p = (ptr); \
+ might_fault(); \
+- access_ok(VERIFY_READ, ptr, sizeof(*ptr)) ? \
+- __get_user(x, ptr) : \
+- -EFAULT; \
++ access_ok(VERIFY_READ, __p, sizeof(*ptr)) ? \
++ __get_user((x), (__typeof__(*(ptr)) *)__p) : \
++ ((x) = (__typeof__(*(ptr)))0,-EFAULT); \
+ })
+
+ #ifndef __get_user_fn
+ static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
+ {
+- size = __copy_from_user(x, ptr, size);
+- return size ? -EFAULT : size;
++ size_t n = __copy_from_user(x, ptr, size);
++ if (unlikely(n)) {
++ memset(x + (size - n), 0, n);
++ return -EFAULT;
++ }
++ return 0;
+ }
+
+ #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
+@@ -255,11 +261,13 @@ extern int __get_user_bad(void) __attribute__((noreturn));
+ static inline long copy_from_user(void *to,
+ const void __user * from, unsigned long n)
+ {
++ unsigned long res = n;
+ might_fault();
+- if (access_ok(VERIFY_READ, from, n))
+- return __copy_from_user(to, from, n);
+- else
+- return n;
++ if (likely(access_ok(VERIFY_READ, from, n)))
++ res = __copy_from_user(to, from, n);
++ if (unlikely(res))
++ memset(to + (n - res), 0, res);
++ return res;
+ }
+
+ static inline long copy_to_user(void __user *to,
+diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
+index 0f313f93c586..46dde3a3c891 100644
+--- a/include/linux/fsnotify_backend.h
++++ b/include/linux/fsnotify_backend.h
+@@ -150,6 +150,7 @@ struct fsnotify_group {
+ #define FS_PRIO_1 1 /* fanotify content based access control */
+ #define FS_PRIO_2 2 /* fanotify pre-content access */
+ unsigned int priority;
++ bool shutdown; /* group is being shut down, don't queue more events */
+
+ /* stores all fastpath marks assoc with this group so they can be cleaned on unregister */
+ struct mutex mark_mutex; /* protect marks_list */
+@@ -181,7 +182,6 @@ struct fsnotify_group {
+ spinlock_t access_lock;
+ struct list_head access_list;
+ wait_queue_head_t access_waitq;
+- atomic_t bypass_perm;
+ #endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */
+ int f_flags;
+ unsigned int max_marks;
+@@ -301,6 +301,8 @@ extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *op
+ extern void fsnotify_get_group(struct fsnotify_group *group);
+ /* drop reference on a group from fsnotify_alloc_group */
+ extern void fsnotify_put_group(struct fsnotify_group *group);
++/* group destruction begins, stop queuing new events */
++extern void fsnotify_group_stop_queueing(struct fsnotify_group *group);
+ /* destroy group */
+ extern void fsnotify_destroy_group(struct fsnotify_group *group);
+ /* fasync handler function */
+@@ -313,8 +315,6 @@ extern int fsnotify_add_event(struct fsnotify_group *group,
+ struct fsnotify_event *event,
+ int (*merge)(struct list_head *,
+ struct fsnotify_event *));
+-/* Remove passed event from groups notification queue */
+-extern void fsnotify_remove_event(struct fsnotify_group *group, struct fsnotify_event *event);
+ /* true if the group notification queue is empty */
+ extern bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group);
+ /* return, but do not dequeue the first event on the notification queue */
+diff --git a/include/linux/irq.h b/include/linux/irq.h
+index 3532dca843f4..33475a37f1bb 100644
+--- a/include/linux/irq.h
++++ b/include/linux/irq.h
+@@ -852,6 +852,16 @@ static inline void irq_gc_lock(struct irq_chip_generic *gc) { }
+ static inline void irq_gc_unlock(struct irq_chip_generic *gc) { }
+ #endif
+
++/*
++ * The irqsave variants are for usage in non interrupt code. Do not use
++ * them in irq_chip callbacks. Use irq_gc_lock() instead.
++ */
++#define irq_gc_lock_irqsave(gc, flags) \
++ raw_spin_lock_irqsave(&(gc)->lock, flags)
++
++#define irq_gc_unlock_irqrestore(gc, flags) \
++ raw_spin_unlock_irqrestore(&(gc)->lock, flags)
++
+ static inline void irq_reg_writel(struct irq_chip_generic *gc,
+ u32 val, int reg_offset)
+ {
+diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
+index 4b3736f7065c..30a8f531236c 100644
+--- a/include/linux/pagemap.h
++++ b/include/linux/pagemap.h
+@@ -594,56 +594,56 @@ static inline int fault_in_pages_readable(const char __user *uaddr, int size)
+ */
+ static inline int fault_in_multipages_writeable(char __user *uaddr, int size)
+ {
+- int ret = 0;
+ char __user *end = uaddr + size - 1;
+
+ if (unlikely(size == 0))
+- return ret;
++ return 0;
+
++ if (unlikely(uaddr > end))
++ return -EFAULT;
+ /*
+ * Writing zeroes into userspace here is OK, because we know that if
+ * the zero gets there, we'll be overwriting it.
+ */
+- while (uaddr <= end) {
+- ret = __put_user(0, uaddr);
+- if (ret != 0)
+- return ret;
++ do {
++ if (unlikely(__put_user(0, uaddr) != 0))
++ return -EFAULT;
+ uaddr += PAGE_SIZE;
+- }
++ } while (uaddr <= end);
+
+ /* Check whether the range spilled into the next page. */
+ if (((unsigned long)uaddr & PAGE_MASK) ==
+ ((unsigned long)end & PAGE_MASK))
+- ret = __put_user(0, end);
++ return __put_user(0, end);
+
+- return ret;
++ return 0;
+ }
+
+ static inline int fault_in_multipages_readable(const char __user *uaddr,
+ int size)
+ {
+ volatile char c;
+- int ret = 0;
+ const char __user *end = uaddr + size - 1;
+
+ if (unlikely(size == 0))
+- return ret;
++ return 0;
+
+- while (uaddr <= end) {
+- ret = __get_user(c, uaddr);
+- if (ret != 0)
+- return ret;
++ if (unlikely(uaddr > end))
++ return -EFAULT;
++
++ do {
++ if (unlikely(__get_user(c, uaddr) != 0))
++ return -EFAULT;
+ uaddr += PAGE_SIZE;
+- }
++ } while (uaddr <= end);
+
+ /* Check whether the range spilled into the next page. */
+ if (((unsigned long)uaddr & PAGE_MASK) ==
+ ((unsigned long)end & PAGE_MASK)) {
+- ret = __get_user(c, end);
+- (void)c;
++ return __get_user(c, end);
+ }
+
+- return ret;
++ return 0;
+ }
+
+ int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
+diff --git a/include/linux/uio.h b/include/linux/uio.h
+index 8b01e1c3c614..5f9c59da978b 100644
+--- a/include/linux/uio.h
++++ b/include/linux/uio.h
+@@ -76,7 +76,7 @@ size_t iov_iter_copy_from_user_atomic(struct page *page,
+ struct iov_iter *i, unsigned long offset, size_t bytes);
+ void iov_iter_advance(struct iov_iter *i, size_t bytes);
+ int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes);
+-int iov_iter_fault_in_multipages_readable(struct iov_iter *i, size_t bytes);
++#define iov_iter_fault_in_multipages_readable iov_iter_fault_in_readable
+ size_t iov_iter_single_seg_count(const struct iov_iter *i);
+ size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes,
+ struct iov_iter *i);
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 98e607121d09..6cb5f00696f5 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -1672,6 +1672,28 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags)
+ success = 1; /* we're going to change ->state */
+ cpu = task_cpu(p);
+
++ /*
++ * Ensure we load p->on_rq _after_ p->state, otherwise it would
++ * be possible to, falsely, observe p->on_rq == 0 and get stuck
++ * in smp_cond_load_acquire() below.
++ *
++ * sched_ttwu_pending() try_to_wake_up()
++ * [S] p->on_rq = 1; [L] P->state
++ * UNLOCK rq->lock -----.
++ * \
++ * +--- RMB
++ * schedule() /
++ * LOCK rq->lock -----'
++ * UNLOCK rq->lock
++ *
++ * [task p]
++ * [S] p->state = UNINTERRUPTIBLE [L] p->on_rq
++ *
++ * Pairs with the UNLOCK+LOCK on rq->lock from the
++ * last wakeup of our task and the schedule that got our task
++ * current.
++ */
++ smp_rmb();
+ if (p->on_rq && ttwu_remote(p, wake_flags))
+ goto stat;
+
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index de6ea94c41bb..61ea7e8cdde5 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -4694,19 +4694,20 @@ tracing_read_pipe(struct file *filp, char __user *ubuf,
+ struct trace_iterator *iter = filp->private_data;
+ ssize_t sret;
+
+- /* return any leftover data */
+- sret = trace_seq_to_user(&iter->seq, ubuf, cnt);
+- if (sret != -EBUSY)
+- return sret;
+-
+- trace_seq_init(&iter->seq);
+-
+ /*
+ * Avoid more than one consumer on a single file descriptor
+ * This is just a matter of traces coherency, the ring buffer itself
+ * is protected.
+ */
+ mutex_lock(&iter->mutex);
++
++ /* return any leftover data */
++ sret = trace_seq_to_user(&iter->seq, ubuf, cnt);
++ if (sret != -EBUSY)
++ goto out;
++
++ trace_seq_init(&iter->seq);
++
+ if (iter->trace->read) {
+ sret = iter->trace->read(iter, filp, ubuf, cnt, ppos);
+ if (sret)
+@@ -5731,9 +5732,6 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
+ return -EBUSY;
+ #endif
+
+- if (splice_grow_spd(pipe, &spd))
+- return -ENOMEM;
+-
+ if (*ppos & (PAGE_SIZE - 1))
+ return -EINVAL;
+
+@@ -5743,6 +5741,9 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
+ len &= PAGE_MASK;
+ }
+
++ if (splice_grow_spd(pipe, &spd))
++ return -ENOMEM;
++
+ again:
+ trace_access_lock(iter->cpu_file);
+ entries = ring_buffer_entries_cpu(iter->trace_buffer->buffer, iter->cpu_file);
+@@ -5800,19 +5801,21 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
+ /* did we read anything? */
+ if (!spd.nr_pages) {
+ if (ret)
+- return ret;
++ goto out;
+
++ ret = -EAGAIN;
+ if ((file->f_flags & O_NONBLOCK) || (flags & SPLICE_F_NONBLOCK))
+- return -EAGAIN;
++ goto out;
+
+ ret = wait_on_pipe(iter, true);
+ if (ret)
+- return ret;
++ goto out;
+
+ goto again;
+ }
+
+ ret = splice_to_pipe(pipe, &spd);
++out:
+ splice_shrink_spd(&spd);
+
+ return ret;
+diff --git a/lib/iov_iter.c b/lib/iov_iter.c
+index 75232ad0a5e7..daca582a8ed0 100644
+--- a/lib/iov_iter.c
++++ b/lib/iov_iter.c
+@@ -298,33 +298,13 @@ done:
+ }
+
+ /*
+- * Fault in the first iovec of the given iov_iter, to a maximum length
+- * of bytes. Returns 0 on success, or non-zero if the memory could not be
+- * accessed (ie. because it is an invalid address).
+- *
+- * writev-intensive code may want this to prefault several iovecs -- that
+- * would be possible (callers must not rely on the fact that _only_ the
+- * first iovec will be faulted with the current implementation).
+- */
+-int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes)
+-{
+- if (!(i->type & (ITER_BVEC|ITER_KVEC))) {
+- char __user *buf = i->iov->iov_base + i->iov_offset;
+- bytes = min(bytes, i->iov->iov_len - i->iov_offset);
+- return fault_in_pages_readable(buf, bytes);
+- }
+- return 0;
+-}
+-EXPORT_SYMBOL(iov_iter_fault_in_readable);
+-
+-/*
+ * Fault in one or more iovecs of the given iov_iter, to a maximum length of
+ * bytes. For each iovec, fault in each page that constitutes the iovec.
+ *
+ * Return 0 on success, or non-zero if the memory could not be accessed (i.e.
+ * because it is an invalid address).
+ */
+-int iov_iter_fault_in_multipages_readable(struct iov_iter *i, size_t bytes)
++int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes)
+ {
+ size_t skip = i->iov_offset;
+ const struct iovec *iov;
+@@ -341,7 +321,7 @@ int iov_iter_fault_in_multipages_readable(struct iov_iter *i, size_t bytes)
+ }
+ return 0;
+ }
+-EXPORT_SYMBOL(iov_iter_fault_in_multipages_readable);
++EXPORT_SYMBOL(iov_iter_fault_in_readable);
+
+ void iov_iter_init(struct iov_iter *i, int direction,
+ const struct iovec *iov, unsigned long nr_segs,
+diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
+index f555f4fc1d62..c66b7d325a39 100644
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -1801,6 +1801,7 @@ errdad:
+ spin_unlock_bh(&ifp->lock);
+
+ addrconf_mod_dad_work(ifp, 0);
++ in6_ifa_put(ifp);
+ }
+
+ /* Join to solicited addr multicast group.
+@@ -3526,6 +3527,7 @@ static void addrconf_dad_work(struct work_struct *w)
+ addrconf_dad_begin(ifp);
+ goto out;
+ } else if (action == DAD_ABORT) {
++ in6_ifa_hold(ifp);
+ addrconf_dad_stop(ifp, 1);
+ goto out;
+ }
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index f24138681b80..978d7f91ca91 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -6466,7 +6466,7 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
+
+ params.n_counter_offsets_presp = len / sizeof(u16);
+ if (rdev->wiphy.max_num_csa_counters &&
+- (params.n_counter_offsets_beacon >
++ (params.n_counter_offsets_presp >
+ rdev->wiphy.max_num_csa_counters))
+ return -EINVAL;
+
+diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
+index c753211cb83f..b50ee5d622e1 100644
+--- a/net/wireless/wext-core.c
++++ b/net/wireless/wext-core.c
+@@ -955,29 +955,8 @@ static int wireless_process_ioctl(struct net *net, struct ifreq *ifr,
+ return private(dev, iwr, cmd, info, handler);
+ }
+ /* Old driver API : call driver ioctl handler */
+- if (dev->netdev_ops->ndo_do_ioctl) {
+-#ifdef CONFIG_COMPAT
+- if (info->flags & IW_REQUEST_FLAG_COMPAT) {
+- int ret = 0;
+- struct iwreq iwr_lcl;
+- struct compat_iw_point *iwp_compat = (void *) &iwr->u.data;
+-
+- memcpy(&iwr_lcl, iwr, sizeof(struct iwreq));
+- iwr_lcl.u.data.pointer = compat_ptr(iwp_compat->pointer);
+- iwr_lcl.u.data.length = iwp_compat->length;
+- iwr_lcl.u.data.flags = iwp_compat->flags;
+-
+- ret = dev->netdev_ops->ndo_do_ioctl(dev, (void *) &iwr_lcl, cmd);
+-
+- iwp_compat->pointer = ptr_to_compat(iwr_lcl.u.data.pointer);
+- iwp_compat->length = iwr_lcl.u.data.length;
+- iwp_compat->flags = iwr_lcl.u.data.flags;
+-
+- return ret;
+- } else
+-#endif
+- return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
+- }
++ if (dev->netdev_ops->ndo_do_ioctl)
++ return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
+ return -EOPNOTSUPP;
+ }
+
+diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
+index 795437b10082..b450a27588c8 100644
+--- a/sound/core/rawmidi.c
++++ b/sound/core/rawmidi.c
+@@ -1633,11 +1633,13 @@ static int snd_rawmidi_dev_register(struct snd_device *device)
+ return -EBUSY;
+ }
+ list_add_tail(&rmidi->list, &snd_rawmidi_devices);
++ mutex_unlock(®ister_mutex);
+ err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI,
+ rmidi->card, rmidi->device,
+ &snd_rawmidi_f_ops, rmidi, &rmidi->dev);
+ if (err < 0) {
+ rmidi_err(rmidi, "unable to register\n");
++ mutex_lock(®ister_mutex);
+ list_del(&rmidi->list);
+ mutex_unlock(®ister_mutex);
+ return err;
+@@ -1645,6 +1647,7 @@ static int snd_rawmidi_dev_register(struct snd_device *device)
+ if (rmidi->ops && rmidi->ops->dev_register &&
+ (err = rmidi->ops->dev_register(rmidi)) < 0) {
+ snd_unregister_device(&rmidi->dev);
++ mutex_lock(®ister_mutex);
+ list_del(&rmidi->list);
+ mutex_unlock(®ister_mutex);
+ return err;
+@@ -1677,7 +1680,6 @@ static int snd_rawmidi_dev_register(struct snd_device *device)
+ }
+ }
+ #endif /* CONFIG_SND_OSSEMUL */
+- mutex_unlock(®ister_mutex);
+ sprintf(name, "midi%d", rmidi->device);
+ entry = snd_info_create_card_entry(rmidi->card, name, rmidi->card->proc_root);
+ if (entry) {
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index 43e785a79eb3..8800d237369a 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -35,6 +35,9 @@
+ #include <sound/initval.h>
+ #include <linux/kmod.h>
+
++/* internal flags */
++#define SNDRV_TIMER_IFLG_PAUSED 0x00010000
++
+ #if IS_ENABLED(CONFIG_SND_HRTIMER)
+ #define DEFAULT_TIMER_LIMIT 4
+ #elif IS_ENABLED(CONFIG_SND_RTCTIMER)
+@@ -296,8 +299,21 @@ int snd_timer_open(struct snd_timer_instance **ti,
+ get_device(&timer->card->card_dev);
+ timeri->slave_class = tid->dev_sclass;
+ timeri->slave_id = slave_id;
+- if (list_empty(&timer->open_list_head) && timer->hw.open)
+- timer->hw.open(timer);
++
++ if (list_empty(&timer->open_list_head) && timer->hw.open) {
++ int err = timer->hw.open(timer);
++ if (err) {
++ kfree(timeri->owner);
++ kfree(timeri);
++
++ if (timer->card)
++ put_device(&timer->card->card_dev);
++ module_put(timer->module);
++ mutex_unlock(®ister_mutex);
++ return err;
++ }
++ }
++
+ list_add_tail(&timeri->open_list, &timer->open_list_head);
+ snd_timer_check_master(timeri);
+ mutex_unlock(®ister_mutex);
+@@ -305,8 +321,6 @@ int snd_timer_open(struct snd_timer_instance **ti,
+ return 0;
+ }
+
+-static int _snd_timer_stop(struct snd_timer_instance *timeri, int event);
+-
+ /*
+ * close a timer instance
+ */
+@@ -395,7 +409,6 @@ unsigned long snd_timer_resolution(struct snd_timer_instance *timeri)
+ static void snd_timer_notify1(struct snd_timer_instance *ti, int event)
+ {
+ struct snd_timer *timer;
+- unsigned long flags;
+ unsigned long resolution = 0;
+ struct snd_timer_instance *ts;
+ struct timespec tstamp;
+@@ -419,34 +432,66 @@ static void snd_timer_notify1(struct snd_timer_instance *ti, int event)
+ return;
+ if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE)
+ return;
+- spin_lock_irqsave(&timer->lock, flags);
+ list_for_each_entry(ts, &ti->slave_active_head, active_list)
+ if (ts->ccallback)
+ ts->ccallback(ts, event + 100, &tstamp, resolution);
+- spin_unlock_irqrestore(&timer->lock, flags);
+ }
+
+-static int snd_timer_start1(struct snd_timer *timer, struct snd_timer_instance *timeri,
+- unsigned long sticks)
++/* start/continue a master timer */
++static int snd_timer_start1(struct snd_timer_instance *timeri,
++ bool start, unsigned long ticks)
+ {
++ struct snd_timer *timer;
++ int result;
++ unsigned long flags;
++
++ timer = timeri->timer;
++ if (!timer)
++ return -EINVAL;
++
++ spin_lock_irqsave(&timer->lock, flags);
++ if (timer->card && timer->card->shutdown) {
++ result = -ENODEV;
++ goto unlock;
++ }
++ if (timeri->flags & (SNDRV_TIMER_IFLG_RUNNING |
++ SNDRV_TIMER_IFLG_START)) {
++ result = -EBUSY;
++ goto unlock;
++ }
++
++ if (start)
++ timeri->ticks = timeri->cticks = ticks;
++ else if (!timeri->cticks)
++ timeri->cticks = 1;
++ timeri->pticks = 0;
++
+ list_move_tail(&timeri->active_list, &timer->active_list_head);
+ if (timer->running) {
+ if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE)
+ goto __start_now;
+ timer->flags |= SNDRV_TIMER_FLG_RESCHED;
+ timeri->flags |= SNDRV_TIMER_IFLG_START;
+- return 1; /* delayed start */
++ result = 1; /* delayed start */
+ } else {
+- timer->sticks = sticks;
++ if (start)
++ timer->sticks = ticks;
+ timer->hw.start(timer);
+ __start_now:
+ timer->running++;
+ timeri->flags |= SNDRV_TIMER_IFLG_RUNNING;
+- return 0;
++ result = 0;
+ }
++ snd_timer_notify1(timeri, start ? SNDRV_TIMER_EVENT_START :
++ SNDRV_TIMER_EVENT_CONTINUE);
++ unlock:
++ spin_unlock_irqrestore(&timer->lock, flags);
++ return result;
+ }
+
+-static int snd_timer_start_slave(struct snd_timer_instance *timeri)
++/* start/continue a slave timer */
++static int snd_timer_start_slave(struct snd_timer_instance *timeri,
++ bool start)
+ {
+ unsigned long flags;
+
+@@ -460,88 +505,37 @@ static int snd_timer_start_slave(struct snd_timer_instance *timeri)
+ spin_lock(&timeri->timer->lock);
+ list_add_tail(&timeri->active_list,
+ &timeri->master->slave_active_head);
++ snd_timer_notify1(timeri, start ? SNDRV_TIMER_EVENT_START :
++ SNDRV_TIMER_EVENT_CONTINUE);
+ spin_unlock(&timeri->timer->lock);
+ }
+ spin_unlock_irqrestore(&slave_active_lock, flags);
+ return 1; /* delayed start */
+ }
+
+-/*
+- * start the timer instance
+- */
+-int snd_timer_start(struct snd_timer_instance *timeri, unsigned int ticks)
++/* stop/pause a master timer */
++static int snd_timer_stop1(struct snd_timer_instance *timeri, bool stop)
+ {
+ struct snd_timer *timer;
+- int result = -EINVAL;
++ int result = 0;
+ unsigned long flags;
+
+- if (timeri == NULL || ticks < 1)
+- return -EINVAL;
+- if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
+- result = snd_timer_start_slave(timeri);
+- if (result >= 0)
+- snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
+- return result;
+- }
+- timer = timeri->timer;
+- if (timer == NULL)
+- return -EINVAL;
+- if (timer->card && timer->card->shutdown)
+- return -ENODEV;
+- spin_lock_irqsave(&timer->lock, flags);
+- if (timeri->flags & (SNDRV_TIMER_IFLG_RUNNING |
+- SNDRV_TIMER_IFLG_START)) {
+- result = -EBUSY;
+- goto unlock;
+- }
+- timeri->ticks = timeri->cticks = ticks;
+- timeri->pticks = 0;
+- result = snd_timer_start1(timer, timeri, ticks);
+- unlock:
+- spin_unlock_irqrestore(&timer->lock, flags);
+- if (result >= 0)
+- snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
+- return result;
+-}
+-
+-static int _snd_timer_stop(struct snd_timer_instance *timeri, int event)
+-{
+- struct snd_timer *timer;
+- unsigned long flags;
+-
+- if (snd_BUG_ON(!timeri))
+- return -ENXIO;
+-
+- if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
+- spin_lock_irqsave(&slave_active_lock, flags);
+- if (!(timeri->flags & SNDRV_TIMER_IFLG_RUNNING)) {
+- spin_unlock_irqrestore(&slave_active_lock, flags);
+- return -EBUSY;
+- }
+- if (timeri->timer)
+- spin_lock(&timeri->timer->lock);
+- timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+- list_del_init(&timeri->ack_list);
+- list_del_init(&timeri->active_list);
+- if (timeri->timer)
+- spin_unlock(&timeri->timer->lock);
+- spin_unlock_irqrestore(&slave_active_lock, flags);
+- goto __end;
+- }
+ timer = timeri->timer;
+ if (!timer)
+ return -EINVAL;
+ spin_lock_irqsave(&timer->lock, flags);
+ if (!(timeri->flags & (SNDRV_TIMER_IFLG_RUNNING |
+ SNDRV_TIMER_IFLG_START))) {
+- spin_unlock_irqrestore(&timer->lock, flags);
+- return -EBUSY;
++ result = -EBUSY;
++ goto unlock;
+ }
+ list_del_init(&timeri->ack_list);
+ list_del_init(&timeri->active_list);
+- if (timer->card && timer->card->shutdown) {
+- spin_unlock_irqrestore(&timer->lock, flags);
+- return 0;
++ if (timer->card && timer->card->shutdown)
++ goto unlock;
++ if (stop) {
++ timeri->cticks = timeri->ticks;
++ timeri->pticks = 0;
+ }
+ if ((timeri->flags & SNDRV_TIMER_IFLG_RUNNING) &&
+ !(--timer->running)) {
+@@ -556,35 +550,64 @@ static int _snd_timer_stop(struct snd_timer_instance *timeri, int event)
+ }
+ }
+ timeri->flags &= ~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
++ if (stop)
++ timeri->flags &= ~SNDRV_TIMER_IFLG_PAUSED;
++ else
++ timeri->flags |= SNDRV_TIMER_IFLG_PAUSED;
++ snd_timer_notify1(timeri, stop ? SNDRV_TIMER_EVENT_STOP :
++ SNDRV_TIMER_EVENT_CONTINUE);
++ unlock:
+ spin_unlock_irqrestore(&timer->lock, flags);
+- __end:
+- if (event != SNDRV_TIMER_EVENT_RESOLUTION)
+- snd_timer_notify1(timeri, event);
++ return result;
++}
++
++/* stop/pause a slave timer */
++static int snd_timer_stop_slave(struct snd_timer_instance *timeri, bool stop)
++{
++ unsigned long flags;
++
++ spin_lock_irqsave(&slave_active_lock, flags);
++ if (!(timeri->flags & SNDRV_TIMER_IFLG_RUNNING)) {
++ spin_unlock_irqrestore(&slave_active_lock, flags);
++ return -EBUSY;
++ }
++ timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
++ if (timeri->timer) {
++ spin_lock(&timeri->timer->lock);
++ list_del_init(&timeri->ack_list);
++ list_del_init(&timeri->active_list);
++ snd_timer_notify1(timeri, stop ? SNDRV_TIMER_EVENT_STOP :
++ SNDRV_TIMER_EVENT_CONTINUE);
++ spin_unlock(&timeri->timer->lock);
++ }
++ spin_unlock_irqrestore(&slave_active_lock, flags);
+ return 0;
+ }
+
+ /*
++ * start the timer instance
++ */
++int snd_timer_start(struct snd_timer_instance *timeri, unsigned int ticks)
++{
++ if (timeri == NULL || ticks < 1)
++ return -EINVAL;
++ if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE)
++ return snd_timer_start_slave(timeri, true);
++ else
++ return snd_timer_start1(timeri, true, ticks);
++}
++
++/*
+ * stop the timer instance.
+ *
+ * do not call this from the timer callback!
+ */
+ int snd_timer_stop(struct snd_timer_instance *timeri)
+ {
+- struct snd_timer *timer;
+- unsigned long flags;
+- int err;
+-
+- err = _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_STOP);
+- if (err < 0)
+- return err;
+- timer = timeri->timer;
+- if (!timer)
+- return -EINVAL;
+- spin_lock_irqsave(&timer->lock, flags);
+- timeri->cticks = timeri->ticks;
+- timeri->pticks = 0;
+- spin_unlock_irqrestore(&timer->lock, flags);
+- return 0;
++ if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE)
++ return snd_timer_stop_slave(timeri, true);
++ else
++ return snd_timer_stop1(timeri, true);
+ }
+
+ /*
+@@ -592,32 +615,14 @@ int snd_timer_stop(struct snd_timer_instance *timeri)
+ */
+ int snd_timer_continue(struct snd_timer_instance *timeri)
+ {
+- struct snd_timer *timer;
+- int result = -EINVAL;
+- unsigned long flags;
++ /* timer can continue only after pause */
++ if (!(timeri->flags & SNDRV_TIMER_IFLG_PAUSED))
++ return -EINVAL;
+
+- if (timeri == NULL)
+- return result;
+ if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE)
+- return snd_timer_start_slave(timeri);
+- timer = timeri->timer;
+- if (! timer)
+- return -EINVAL;
+- if (timer->card && timer->card->shutdown)
+- return -ENODEV;
+- spin_lock_irqsave(&timer->lock, flags);
+- if (timeri->flags & SNDRV_TIMER_IFLG_RUNNING) {
+- result = -EBUSY;
+- goto unlock;
+- }
+- if (!timeri->cticks)
+- timeri->cticks = 1;
+- timeri->pticks = 0;
+- result = snd_timer_start1(timer, timeri, timer->sticks);
+- unlock:
+- spin_unlock_irqrestore(&timer->lock, flags);
+- snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_CONTINUE);
+- return result;
++ return snd_timer_start_slave(timeri, false);
++ else
++ return snd_timer_start1(timeri, false, 0);
+ }
+
+ /*
+@@ -625,7 +630,10 @@ int snd_timer_continue(struct snd_timer_instance *timeri)
+ */
+ int snd_timer_pause(struct snd_timer_instance * timeri)
+ {
+- return _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_PAUSE);
++ if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE)
++ return snd_timer_stop_slave(timeri, false);
++ else
++ return snd_timer_stop1(timeri, false);
+ }
+
+ /*
+@@ -837,6 +845,7 @@ int snd_timer_new(struct snd_card *card, char *id, struct snd_timer_id *tid,
+ timer->tmr_subdevice = tid->subdevice;
+ if (id)
+ strlcpy(timer->id, id, sizeof(timer->id));
++ timer->sticks = 1;
+ INIT_LIST_HEAD(&timer->device_list);
+ INIT_LIST_HEAD(&timer->open_list_head);
+ INIT_LIST_HEAD(&timer->active_list_head);
+@@ -1826,6 +1835,9 @@ static int snd_timer_user_continue(struct file *file)
+ tu = file->private_data;
+ if (!tu->timeri)
+ return -EBADFD;
++ /* start timer instead of continue if it's not used before */
++ if (!(tu->timeri->flags & SNDRV_TIMER_IFLG_PAUSED))
++ return snd_timer_user_start(file);
+ tu->timeri->lost = 0;
+ return (err = snd_timer_continue(tu->timeri)) < 0 ? err : 0;
+ }
+@@ -1967,6 +1979,7 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
+ tu->qused--;
+ spin_unlock_irq(&tu->qlock);
+
++ mutex_lock(&tu->ioctl_lock);
+ if (tu->tread) {
+ if (copy_to_user(buffer, &tu->tqueue[qhead],
+ sizeof(struct snd_timer_tread)))
+@@ -1976,6 +1989,7 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
+ sizeof(struct snd_timer_read)))
+ err = -EFAULT;
+ }
++ mutex_unlock(&tu->ioctl_lock);
+
+ spin_lock_irq(&tu->qlock);
+ if (err < 0)
+diff --git a/sound/firewire/fireworks/fireworks.h b/sound/firewire/fireworks/fireworks.h
+index 084d414b228c..b431c34b2d74 100644
+--- a/sound/firewire/fireworks/fireworks.h
++++ b/sound/firewire/fireworks/fireworks.h
+@@ -106,7 +106,6 @@ struct snd_efw {
+ u8 *resp_buf;
+ u8 *pull_ptr;
+ u8 *push_ptr;
+- unsigned int resp_queues;
+ };
+
+ int snd_efw_transaction_cmd(struct fw_unit *unit,
+diff --git a/sound/firewire/fireworks/fireworks_hwdep.c b/sound/firewire/fireworks/fireworks_hwdep.c
+index 33df8655fe81..2e1d9a23920c 100644
+--- a/sound/firewire/fireworks/fireworks_hwdep.c
++++ b/sound/firewire/fireworks/fireworks_hwdep.c
+@@ -25,6 +25,7 @@ hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained,
+ {
+ unsigned int length, till_end, type;
+ struct snd_efw_transaction *t;
++ u8 *pull_ptr;
+ long count = 0;
+
+ if (remained < sizeof(type) + sizeof(struct snd_efw_transaction))
+@@ -38,8 +39,17 @@ hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained,
+ buf += sizeof(type);
+
+ /* write into buffer as many responses as possible */
+- while (efw->resp_queues > 0) {
+- t = (struct snd_efw_transaction *)(efw->pull_ptr);
++ spin_lock_irq(&efw->lock);
++
++ /*
++ * When another task reaches here during this task's access to user
++ * space, it picks up current position in buffer and can read the same
++ * series of responses.
++ */
++ pull_ptr = efw->pull_ptr;
++
++ while (efw->push_ptr != pull_ptr) {
++ t = (struct snd_efw_transaction *)(pull_ptr);
+ length = be32_to_cpu(t->length) * sizeof(__be32);
+
+ /* confirm enough space for this response */
+@@ -49,26 +59,39 @@ hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained,
+ /* copy from ring buffer to user buffer */
+ while (length > 0) {
+ till_end = snd_efw_resp_buf_size -
+- (unsigned int)(efw->pull_ptr - efw->resp_buf);
++ (unsigned int)(pull_ptr - efw->resp_buf);
+ till_end = min_t(unsigned int, length, till_end);
+
+- if (copy_to_user(buf, efw->pull_ptr, till_end))
++ spin_unlock_irq(&efw->lock);
++
++ if (copy_to_user(buf, pull_ptr, till_end))
+ return -EFAULT;
+
+- efw->pull_ptr += till_end;
+- if (efw->pull_ptr >= efw->resp_buf +
+- snd_efw_resp_buf_size)
+- efw->pull_ptr -= snd_efw_resp_buf_size;
++ spin_lock_irq(&efw->lock);
++
++ pull_ptr += till_end;
++ if (pull_ptr >= efw->resp_buf + snd_efw_resp_buf_size)
++ pull_ptr -= snd_efw_resp_buf_size;
+
+ length -= till_end;
+ buf += till_end;
+ count += till_end;
+ remained -= till_end;
+ }
+-
+- efw->resp_queues--;
+ }
+
++ /*
++ * All of tasks can read from the buffer nearly simultaneously, but the
++ * last position for each task is different depending on the length of
++ * given buffer. Here, for simplicity, a position of buffer is set by
++ * the latest task. It's better for a listening application to allow one
++ * thread to read from the buffer. Unless, each task can read different
++ * sequence of responses depending on variation of buffer length.
++ */
++ efw->pull_ptr = pull_ptr;
++
++ spin_unlock_irq(&efw->lock);
++
+ return count;
+ }
+
+@@ -76,14 +99,17 @@ static long
+ hwdep_read_locked(struct snd_efw *efw, char __user *buf, long count,
+ loff_t *offset)
+ {
+- union snd_firewire_event event;
++ union snd_firewire_event event = {
++ .lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS,
++ };
+
+- memset(&event, 0, sizeof(event));
++ spin_lock_irq(&efw->lock);
+
+- event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS;
+ event.lock_status.status = (efw->dev_lock_count > 0);
+ efw->dev_lock_changed = false;
+
++ spin_unlock_irq(&efw->lock);
++
+ count = min_t(long, count, sizeof(event.lock_status));
+
+ if (copy_to_user(buf, &event, count))
+@@ -98,10 +124,15 @@ hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
+ {
+ struct snd_efw *efw = hwdep->private_data;
+ DEFINE_WAIT(wait);
++ bool dev_lock_changed;
++ bool queued;
+
+ spin_lock_irq(&efw->lock);
+
+- while ((!efw->dev_lock_changed) && (efw->resp_queues == 0)) {
++ dev_lock_changed = efw->dev_lock_changed;
++ queued = efw->push_ptr != efw->pull_ptr;
++
++ while (!dev_lock_changed && !queued) {
+ prepare_to_wait(&efw->hwdep_wait, &wait, TASK_INTERRUPTIBLE);
+ spin_unlock_irq(&efw->lock);
+ schedule();
+@@ -109,15 +140,17 @@ hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ spin_lock_irq(&efw->lock);
++ dev_lock_changed = efw->dev_lock_changed;
++ queued = efw->push_ptr != efw->pull_ptr;
+ }
+
+- if (efw->dev_lock_changed)
++ spin_unlock_irq(&efw->lock);
++
++ if (dev_lock_changed)
+ count = hwdep_read_locked(efw, buf, count, offset);
+- else if (efw->resp_queues > 0)
++ else if (queued)
+ count = hwdep_read_resp_buf(efw, buf, count, offset);
+
+- spin_unlock_irq(&efw->lock);
+-
+ return count;
+ }
+
+@@ -160,7 +193,7 @@ hwdep_poll(struct snd_hwdep *hwdep, struct file *file, poll_table *wait)
+ poll_wait(file, &efw->hwdep_wait, wait);
+
+ spin_lock_irq(&efw->lock);
+- if (efw->dev_lock_changed || (efw->resp_queues > 0))
++ if (efw->dev_lock_changed || efw->pull_ptr != efw->push_ptr)
+ events = POLLIN | POLLRDNORM;
+ else
+ events = 0;
+diff --git a/sound/firewire/fireworks/fireworks_proc.c b/sound/firewire/fireworks/fireworks_proc.c
+index 0639dcb13f7d..beb0a0ffee57 100644
+--- a/sound/firewire/fireworks/fireworks_proc.c
++++ b/sound/firewire/fireworks/fireworks_proc.c
+@@ -188,8 +188,8 @@ proc_read_queues_state(struct snd_info_entry *entry,
+ else
+ consumed = (unsigned int)(efw->push_ptr - efw->pull_ptr);
+
+- snd_iprintf(buffer, "%d %d/%d\n",
+- efw->resp_queues, consumed, snd_efw_resp_buf_size);
++ snd_iprintf(buffer, "%d/%d\n",
++ consumed, snd_efw_resp_buf_size);
+ }
+
+ static void
+diff --git a/sound/firewire/fireworks/fireworks_transaction.c b/sound/firewire/fireworks/fireworks_transaction.c
+index f550808d1784..36a08ba51ec7 100644
+--- a/sound/firewire/fireworks/fireworks_transaction.c
++++ b/sound/firewire/fireworks/fireworks_transaction.c
+@@ -121,11 +121,11 @@ copy_resp_to_buf(struct snd_efw *efw, void *data, size_t length, int *rcode)
+ size_t capacity, till_end;
+ struct snd_efw_transaction *t;
+
+- spin_lock_irq(&efw->lock);
+-
+ t = (struct snd_efw_transaction *)data;
+ length = min_t(size_t, be32_to_cpu(t->length) * sizeof(u32), length);
+
++ spin_lock_irq(&efw->lock);
++
+ if (efw->push_ptr < efw->pull_ptr)
+ capacity = (unsigned int)(efw->pull_ptr - efw->push_ptr);
+ else
+@@ -155,7 +155,6 @@ copy_resp_to_buf(struct snd_efw *efw, void *data, size_t length, int *rcode)
+ }
+
+ /* for hwdep */
+- efw->resp_queues++;
+ wake_up(&efw->hwdep_wait);
+
+ *rcode = RCODE_COMPLETE;
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 429697a93a71..2a9ec9706db8 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4750,6 +4750,7 @@ enum {
+ ALC221_FIXUP_HP_FRONT_MIC,
+ ALC292_FIXUP_TPT460,
+ ALC298_FIXUP_SPK_VOLUME,
++ ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER,
+ };
+
+ static const struct hda_fixup alc269_fixups[] = {
+@@ -5411,6 +5412,15 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
+ },
++ [ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER] = {
++ .type = HDA_FIXUP_PINS,
++ .v.pins = (const struct hda_pintbl[]) {
++ { 0x1b, 0x90170151 },
++ { }
++ },
++ .chained = true,
++ .chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
++ },
+ };
+
+ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+@@ -5455,6 +5465,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x06df, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK),
+ SND_PCI_QUIRK(0x1028, 0x06e0, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK),
+ SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13 9350", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
++ SND_PCI_QUIRK(0x1028, 0x0706, "Dell Inspiron 7559", ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER),
+ SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x075b, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x075d, "Dell AIO", ALC298_FIXUP_SPK_VOLUME),
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index e27df0d3898b..4a083433944e 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1137,6 +1137,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
+ case USB_ID(0x0556, 0x0014): /* Phoenix Audio TMX320VC */
+ case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
++ case USB_ID(0x1901, 0x0191): /* GE B850V3 CP2114 audio interface */
+ case USB_ID(0x1de7, 0x0013): /* Phoenix Audio MT202exe */
+ case USB_ID(0x1de7, 0x0014): /* Phoenix Audio TMX320 */
+ case USB_ID(0x1de7, 0x0114): /* Phoenix Audio MT202pcs */
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-09-18 12:47 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-09-18 12:47 UTC (permalink / raw
To: gentoo-commits
commit: 859d270f730c3d0b708c6cc88ddfc3ed97fc5b3a
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sun Sep 18 12:47:05 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sun Sep 18 12:47:05 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=859d270f
Linux patch 4.1.32. Linux patch 4.1.33
0000_README | 8 +
1031_linux-4.1.32.patch | 1489 +++++++++++++++++++++++++++++++++++++++++++++++
1032_linux-4.1.33.patch | 982 +++++++++++++++++++++++++++++++
3 files changed, 2479 insertions(+)
diff --git a/0000_README b/0000_README
index 0ce7ab6..9a2fbfa 100644
--- a/0000_README
+++ b/0000_README
@@ -167,6 +167,14 @@ Patch: 1030_linux-4.1.31.patch
From: http://www.kernel.org
Desc: Linux 4.1.31
+Patch: 1031_linux-4.1.32.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.32
+
+Patch: 1032_linux-4.1.33.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.33
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1031_linux-4.1.32.patch b/1031_linux-4.1.32.patch
new file mode 100644
index 0000000..87bef87
--- /dev/null
+++ b/1031_linux-4.1.32.patch
@@ -0,0 +1,1489 @@
+diff --git a/Makefile b/Makefile
+index bea5ca2ca2b0..e995f28b6d37 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 31
++SUBLEVEL = 32
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h
+index 884081099f80..81cdbc36699b 100644
+--- a/arch/arc/include/asm/entry.h
++++ b/arch/arc/include/asm/entry.h
+@@ -143,8 +143,6 @@
+ POP r13
+ .endm
+
+-#define OFF_USER_R25_FROM_R24 (SZ_CALLEE_REGS + SZ_PT_REGS - 8)/4
+-
+ /*--------------------------------------------------------------
+ * Collect User Mode callee regs as struct callee_regs - needed by
+ * fork/do_signal/unaligned-access-emulation.
+@@ -157,12 +155,13 @@
+ *-------------------------------------------------------------*/
+ .macro SAVE_CALLEE_SAVED_USER
+
++ mov r12, sp ; save SP as ref to pt_regs
+ SAVE_R13_TO_R24
+
+ #ifdef CONFIG_ARC_CURR_IN_REG
+- ; Retrieve orig r25 and save it on stack
+- ld.as r12, [sp, OFF_USER_R25_FROM_R24]
+- st.a r12, [sp, -4]
++ ; Retrieve orig r25 and save it with rest of callee_regs
++ ld r12, [r12, PT_user_r25]
++ PUSH r12
+ #else
+ PUSH r25
+ #endif
+@@ -209,12 +208,16 @@
+ .macro RESTORE_CALLEE_SAVED_USER
+
+ #ifdef CONFIG_ARC_CURR_IN_REG
+- ld.ab r12, [sp, 4]
+- st.as r12, [sp, OFF_USER_R25_FROM_R24]
++ POP r12
+ #else
+ POP r25
+ #endif
+ RESTORE_R24_TO_R13
++
++ ; SP is back to start of pt_regs
++#ifdef CONFIG_ARC_CURR_IN_REG
++ st r12, [sp, PT_user_r25]
++#endif
+ .endm
+
+ /*--------------------------------------------------------------
+diff --git a/arch/arc/include/asm/irqflags.h b/arch/arc/include/asm/irqflags.h
+index 27ecc6975a58..853a80ee7aaa 100644
+--- a/arch/arc/include/asm/irqflags.h
++++ b/arch/arc/include/asm/irqflags.h
+@@ -168,10 +168,10 @@ static inline int arch_irqs_disabled(void)
+ .endm
+
+ .macro IRQ_ENABLE scratch
++ TRACE_ASM_IRQ_ENABLE
+ lr \scratch, [status32]
+ or \scratch, \scratch, (STATUS_E1_MASK | STATUS_E2_MASK)
+ flag \scratch
+- TRACE_ASM_IRQ_ENABLE
+ .endm
+
+ #endif /* __ASSEMBLY__ */
+diff --git a/arch/arc/include/uapi/asm/elf.h b/arch/arc/include/uapi/asm/elf.h
+index 0f99ac8fcbb2..0037a587320d 100644
+--- a/arch/arc/include/uapi/asm/elf.h
++++ b/arch/arc/include/uapi/asm/elf.h
+@@ -13,8 +13,15 @@
+
+ /* Machine specific ELF Hdr flags */
+ #define EF_ARC_OSABI_MSK 0x00000f00
+-#define EF_ARC_OSABI_ORIG 0x00000000 /* MUST be zero for back-compat */
+-#define EF_ARC_OSABI_CURRENT 0x00000300 /* v3 (no legacy syscalls) */
++
++#define EF_ARC_OSABI_V3 0x00000300 /* v3 (no legacy syscalls) */
++#define EF_ARC_OSABI_V4 0x00000400 /* v4 (64bit data any reg align) */
++
++#if __GNUC__ < 6
++#define EF_ARC_OSABI_CURRENT EF_ARC_OSABI_V3
++#else
++#define EF_ARC_OSABI_CURRENT EF_ARC_OSABI_V4
++#endif
+
+ typedef unsigned long elf_greg_t;
+ typedef unsigned long elf_fpregset_t;
+diff --git a/arch/arc/kernel/arcksyms.c b/arch/arc/kernel/arcksyms.c
+index 4d9e77724bed..000dd041ab42 100644
+--- a/arch/arc/kernel/arcksyms.c
++++ b/arch/arc/kernel/arcksyms.c
+@@ -28,6 +28,7 @@ extern void __muldf3(void);
+ extern void __divdf3(void);
+ extern void __floatunsidf(void);
+ extern void __floatunsisf(void);
++extern void __udivdi3(void);
+
+ EXPORT_SYMBOL(__ashldi3);
+ EXPORT_SYMBOL(__ashrdi3);
+@@ -45,6 +46,7 @@ EXPORT_SYMBOL(__muldf3);
+ EXPORT_SYMBOL(__divdf3);
+ EXPORT_SYMBOL(__floatunsidf);
+ EXPORT_SYMBOL(__floatunsisf);
++EXPORT_SYMBOL(__udivdi3);
+
+ /* ARC optimised assembler routines */
+ EXPORT_SYMBOL(memset);
+diff --git a/arch/arc/kernel/asm-offsets.c b/arch/arc/kernel/asm-offsets.c
+index 6c3aa0edb9b5..5f14311ce59e 100644
+--- a/arch/arc/kernel/asm-offsets.c
++++ b/arch/arc/kernel/asm-offsets.c
+@@ -59,5 +59,7 @@ int main(void)
+
+ DEFINE(SZ_CALLEE_REGS, sizeof(struct callee_regs));
+ DEFINE(SZ_PT_REGS, sizeof(struct pt_regs));
++ DEFINE(PT_user_r25, offsetof(struct pt_regs, user_r25));
++
+ return 0;
+ }
+diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c
+index e095c557afdd..72d3990799d5 100644
+--- a/arch/arc/kernel/process.c
++++ b/arch/arc/kernel/process.c
+@@ -201,7 +201,7 @@ int elf_check_arch(const struct elf32_hdr *x)
+ return 0;
+
+ eflags = x->e_flags;
+- if ((eflags & EF_ARC_OSABI_MSK) < EF_ARC_OSABI_CURRENT) {
++ if ((eflags & EF_ARC_OSABI_MSK) != EF_ARC_OSABI_CURRENT) {
+ pr_err("ABI mismatch - you need newer toolchain\n");
+ force_sigsegv(SIGSEGV, current);
+ return 0;
+diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
+index 1d167c6df8ca..321a4b67bfa0 100644
+--- a/arch/arc/kernel/setup.c
++++ b/arch/arc/kernel/setup.c
+@@ -237,8 +237,10 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
+ cpu->dccm.base_addr, TO_KB(cpu->dccm.sz),
+ cpu->iccm.base_addr, TO_KB(cpu->iccm.sz));
+
+- n += scnprintf(buf + n, len - n,
+- "OS ABI [v3]\t: no-legacy-syscalls\n");
++ n += scnprintf(buf + n, len - n, "OS ABI [v%d]\t: %s\n",
++ EF_ARC_OSABI_CURRENT >> 8,
++ EF_ARC_OSABI_CURRENT == EF_ARC_OSABI_V3 ?
++ "no-legacy-syscalls" : "64-bit data any register aligned");
+
+ return buf;
+ }
+diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c
+index 12b2100db073..9cfaae9887b9 100644
+--- a/arch/arc/mm/cache_arc700.c
++++ b/arch/arc/mm/cache_arc700.c
+@@ -155,6 +155,15 @@ void arc_cache_init(void)
+
+ printk(arc_cache_mumbojumbo(0, str, sizeof(str)));
+
++ /*
++ * Only master CPU needs to execute rest of function:
++ * - Assume SMP so all cores will have same cache config so
++ * any geomtry checks will be same for all
++ * - IOC setup / dma callbacks only need to be setup once
++ */
++ if (cpu)
++ return;
++
+ if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) {
+ struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache;
+
+diff --git a/arch/parisc/include/uapi/asm/errno.h b/arch/parisc/include/uapi/asm/errno.h
+index c0ae62520d15..274d5bc6ecce 100644
+--- a/arch/parisc/include/uapi/asm/errno.h
++++ b/arch/parisc/include/uapi/asm/errno.h
+@@ -97,10 +97,10 @@
+ #define ENOTCONN 235 /* Transport endpoint is not connected */
+ #define ESHUTDOWN 236 /* Cannot send after transport endpoint shutdown */
+ #define ETOOMANYREFS 237 /* Too many references: cannot splice */
+-#define EREFUSED ECONNREFUSED /* for HP's NFS apparently */
+ #define ETIMEDOUT 238 /* Connection timed out */
+ #define ECONNREFUSED 239 /* Connection refused */
+-#define EREMOTERELEASE 240 /* Remote peer released connection */
++#define EREFUSED ECONNREFUSED /* for HP's NFS apparently */
++#define EREMOTERELEASE 240 /* Remote peer released connection */
+ #define EHOSTDOWN 241 /* Host is down */
+ #define EHOSTUNREACH 242 /* No route to host */
+
+diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
+index 9a4e71261fca..b264937bba68 100644
+--- a/arch/powerpc/kernel/eeh.c
++++ b/arch/powerpc/kernel/eeh.c
+@@ -678,7 +678,7 @@ int eeh_pci_enable(struct eeh_pe *pe, int function)
+ /* Check if the request is finished successfully */
+ if (active_flag) {
+ rc = eeh_ops->wait_state(pe, PCI_BUS_RESET_WAIT_MSEC);
+- if (rc <= 0)
++ if (rc < 0)
+ return rc;
+
+ if (rc & active_flag)
+diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S
+index 1dd5bd8a8c59..133055311dce 100644
+--- a/arch/um/include/asm/common.lds.S
++++ b/arch/um/include/asm/common.lds.S
+@@ -81,7 +81,7 @@
+ .altinstr_replacement : { *(.altinstr_replacement) }
+ /* .exit.text is discard at runtime, not link time, to deal with references
+ from .altinstructions and .eh_frame */
+- .exit.text : { *(.exit.text) }
++ .exit.text : { EXIT_TEXT }
+ .exit.data : { *(.exit.data) }
+
+ .preinit_array : {
+diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
+index 307a49828826..def2e2e523f1 100644
+--- a/arch/x86/kernel/apic/apic.c
++++ b/arch/x86/kernel/apic/apic.c
+@@ -1583,6 +1583,9 @@ void __init enable_IR_x2apic(void)
+ unsigned long flags;
+ int ret, ir_stat;
+
++ if (skip_ioapic_setup)
++ return;
++
+ ir_stat = irq_remapping_prepare();
+ if (ir_stat < 0 && !x2apic_supported())
+ return;
+diff --git a/block/blk-core.c b/block/blk-core.c
+index 7f29dc0237d1..bbbf36e6066b 100644
+--- a/block/blk-core.c
++++ b/block/blk-core.c
+@@ -475,7 +475,9 @@ EXPORT_SYMBOL_GPL(blk_queue_bypass_end);
+
+ void blk_set_queue_dying(struct request_queue *q)
+ {
+- queue_flag_set_unlocked(QUEUE_FLAG_DYING, q);
++ spin_lock_irq(q->queue_lock);
++ queue_flag_set(QUEUE_FLAG_DYING, q);
++ spin_unlock_irq(q->queue_lock);
+
+ if (q->mq_ops)
+ blk_mq_wake_waiters(q);
+diff --git a/drivers/clocksource/sun4i_timer.c b/drivers/clocksource/sun4i_timer.c
+index 1928a8912584..b03d7919f919 100644
+--- a/drivers/clocksource/sun4i_timer.c
++++ b/drivers/clocksource/sun4i_timer.c
+@@ -120,12 +120,16 @@ static struct clock_event_device sun4i_clockevent = {
+ .set_next_event = sun4i_clkevt_next_event,
+ };
+
++static void sun4i_timer_clear_interrupt(void)
++{
++ writel(TIMER_IRQ_EN(0), timer_base + TIMER_IRQ_ST_REG);
++}
+
+ static irqreturn_t sun4i_timer_interrupt(int irq, void *dev_id)
+ {
+ struct clock_event_device *evt = (struct clock_event_device *)dev_id;
+
+- writel(0x1, timer_base + TIMER_IRQ_ST_REG);
++ sun4i_timer_clear_interrupt();
+ evt->event_handler(evt);
+
+ return IRQ_HANDLED;
+@@ -190,6 +194,9 @@ static void __init sun4i_timer_init(struct device_node *node)
+ /* Make sure timer is stopped before playing with interrupts */
+ sun4i_clkevt_time_stop(0);
+
++ /* clear timer0 interrupt */
++ sun4i_timer_clear_interrupt();
++
+ sun4i_clockevent.cpumask = cpu_possible_mask;
+ sun4i_clockevent.irq = irq;
+
+diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
+index 0436997e054b..9742b3d66288 100644
+--- a/drivers/crypto/caam/caamhash.c
++++ b/drivers/crypto/caam/caamhash.c
+@@ -1862,6 +1862,7 @@ caam_hash_alloc(struct caam_hash_template *template,
+ template->name);
+ snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
+ template->driver_name);
++ t_alg->ahash_alg.setkey = NULL;
+ }
+ alg->cra_module = THIS_MODULE;
+ alg->cra_init = caam_hash_cra_init;
+diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
+index caefe806db5e..c88b01bbf9a3 100644
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -50,6 +50,7 @@ config GPIO_DEVRES
+ config OF_GPIO
+ def_bool y
+ depends on OF
++ depends on HAS_IOMEM
+
+ config GPIO_ACPI
+ def_bool y
+diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
+index 800a025dd062..8a9f49b7391b 100644
+--- a/drivers/gpu/drm/drm_crtc.c
++++ b/drivers/gpu/drm/drm_crtc.c
+@@ -4923,6 +4923,9 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
+ unsigned long flags;
+ int ret = -EINVAL;
+
++ if (!drm_core_check_feature(dev, DRIVER_MODESET))
++ return -EINVAL;
++
+ if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
+ page_flip->reserved != 0)
+ return -EINVAL;
+diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
+index ad90fa3045e5..084dcae37a3d 100644
+--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
++++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
+@@ -2115,6 +2115,7 @@ void i915_global_gtt_cleanup(struct drm_device *dev)
+ struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
+
+ ppgtt->base.cleanup(&ppgtt->base);
++ kfree(ppgtt);
+ }
+
+ if (drm_mm_initialized(&vm->mm)) {
+diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
+index 79bab6fd76bb..eb2a5bac215a 100644
+--- a/drivers/gpu/drm/radeon/atombios_crtc.c
++++ b/drivers/gpu/drm/radeon/atombios_crtc.c
+@@ -586,7 +586,8 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
+ if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev) || ASIC_IS_DCE8(rdev))
+ radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
+ /* use frac fb div on RS780/RS880 */
+- if ((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880))
++ if (((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880))
++ && !radeon_crtc->ss_enabled)
+ radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
+ if (ASIC_IS_DCE32(rdev) && mode->clock > 165000)
+ radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
+@@ -623,7 +624,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
+ if (radeon_crtc->ss.refdiv) {
+ radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV;
+ radeon_crtc->pll_reference_div = radeon_crtc->ss.refdiv;
+- if (ASIC_IS_AVIVO(rdev))
++ if (ASIC_IS_AVIVO(rdev) &&
++ rdev->family != CHIP_RS780 &&
++ rdev->family != CHIP_RS880)
+ radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
+ }
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
+index 50ce26a3b314..f27d81b61536 100644
+--- a/drivers/gpu/drm/radeon/radeon_ttm.c
++++ b/drivers/gpu/drm/radeon/radeon_ttm.c
+@@ -263,8 +263,8 @@ static int radeon_move_blit(struct ttm_buffer_object *bo,
+
+ rdev = radeon_get_rdev(bo->bdev);
+ ridx = radeon_copy_ring_index(rdev);
+- old_start = old_mem->start << PAGE_SHIFT;
+- new_start = new_mem->start << PAGE_SHIFT;
++ old_start = (u64)old_mem->start << PAGE_SHIFT;
++ new_start = (u64)new_mem->start << PAGE_SHIFT;
+
+ switch (old_mem->mem_type) {
+ case TTM_PL_VRAM:
+diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
+index f97c73bd14f8..f04fbd3ef9f3 100644
+--- a/drivers/input/keyboard/tegra-kbc.c
++++ b/drivers/input/keyboard/tegra-kbc.c
+@@ -376,7 +376,7 @@ static int tegra_kbc_start(struct tegra_kbc *kbc)
+ /* Reset the KBC controller to clear all previous status.*/
+ reset_control_assert(kbc->rst);
+ udelay(100);
+- reset_control_assert(kbc->rst);
++ reset_control_deassert(kbc->rst);
+ udelay(100);
+
+ tegra_kbc_config_pins(kbc);
+diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
+index e7d7230a7e31..4cfb0ac797ef 100644
+--- a/drivers/input/serio/i8042.c
++++ b/drivers/input/serio/i8042.c
+@@ -1277,6 +1277,7 @@ static int __init i8042_create_aux_port(int idx)
+ serio->write = i8042_aux_write;
+ serio->start = i8042_start;
+ serio->stop = i8042_stop;
++ serio->ps2_cmd_mutex = &i8042_mutex;
+ serio->port_data = port;
+ serio->dev.parent = &i8042_platform_device->dev;
+ if (idx < 0) {
+diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
+index 2a102834c2ee..a7a03a21d78a 100644
+--- a/drivers/md/bcache/super.c
++++ b/drivers/md/bcache/super.c
+@@ -1851,7 +1851,7 @@ static int cache_alloc(struct cache_sb *sb, struct cache *ca)
+ free = roundup_pow_of_two(ca->sb.nbuckets) >> 10;
+
+ if (!init_fifo(&ca->free[RESERVE_BTREE], 8, GFP_KERNEL) ||
+- !init_fifo(&ca->free[RESERVE_PRIO], prio_buckets(ca), GFP_KERNEL) ||
++ !init_fifo_exact(&ca->free[RESERVE_PRIO], prio_buckets(ca), GFP_KERNEL) ||
+ !init_fifo(&ca->free[RESERVE_MOVINGGC], free, GFP_KERNEL) ||
+ !init_fifo(&ca->free[RESERVE_NONE], free, GFP_KERNEL) ||
+ !init_fifo(&ca->free_inc, free << 2, GFP_KERNEL) ||
+@@ -1876,7 +1876,7 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
+ struct block_device *bdev, struct cache *ca)
+ {
+ char name[BDEVNAME_SIZE];
+- const char *err = NULL;
++ const char *err = NULL; /* must be set for any error case */
+ int ret = 0;
+
+ memcpy(&ca->sb, sb, sizeof(struct cache_sb));
+@@ -1893,8 +1893,13 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
+ ca->discard = CACHE_DISCARD(&ca->sb);
+
+ ret = cache_alloc(sb, ca);
+- if (ret != 0)
++ if (ret != 0) {
++ if (ret == -ENOMEM)
++ err = "cache_alloc(): -ENOMEM";
++ else
++ err = "cache_alloc(): unknown error";
+ goto err;
++ }
+
+ if (kobject_add(&ca->kobj, &part_to_dev(bdev->bd_part)->kobj, "bcache")) {
+ err = "error calling kobject_add";
+diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
+index 0f5e1820c92d..768c9fdf0df8 100644
+--- a/drivers/md/dm-flakey.c
++++ b/drivers/md/dm-flakey.c
+@@ -287,15 +287,13 @@ static int flakey_map(struct dm_target *ti, struct bio *bio)
+ pb->bio_submitted = true;
+
+ /*
+- * Map reads as normal only if corrupt_bio_byte set.
++ * Error reads if neither corrupt_bio_byte or drop_writes are set.
++ * Otherwise, flakey_end_io() will decide if the reads should be modified.
+ */
+ if (bio_data_dir(bio) == READ) {
+- /* If flags were specified, only corrupt those that match. */
+- if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) &&
+- all_corrupt_bio_flags_match(bio, fc))
+- goto map_bio;
+- else
++ if (!fc->corrupt_bio_byte && !test_bit(DROP_WRITES, &fc->flags))
+ return -EIO;
++ goto map_bio;
+ }
+
+ /*
+@@ -332,14 +330,21 @@ static int flakey_end_io(struct dm_target *ti, struct bio *bio, int error)
+ struct flakey_c *fc = ti->private;
+ struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
+
+- /*
+- * Corrupt successful READs while in down state.
+- */
+ if (!error && pb->bio_submitted && (bio_data_dir(bio) == READ)) {
+- if (fc->corrupt_bio_byte)
++ if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) &&
++ all_corrupt_bio_flags_match(bio, fc)) {
++ /*
++ * Corrupt successful matching READs while in down state.
++ */
+ corrupt_bio_data(bio, fc);
+- else
++
++ } else if (!test_bit(DROP_WRITES, &fc->flags)) {
++ /*
++ * Error read during the down_interval if drop_writes
++ * wasn't configured.
++ */
+ return -EIO;
++ }
+ }
+
+ return error;
+diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
+index 92618686604c..9cd27b703dd6 100644
+--- a/drivers/pci/pci-sysfs.c
++++ b/drivers/pci/pci-sysfs.c
+@@ -1369,10 +1369,10 @@ int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev)
+ if (!sysfs_initialized)
+ return -EACCES;
+
+- if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
+- retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr);
+- else
++ if (pdev->cfg_size > PCI_CFG_SPACE_SIZE)
+ retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr);
++ else
++ retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr);
+ if (retval)
+ goto err;
+
+@@ -1424,10 +1424,10 @@ err_rom_file:
+ err_resource_files:
+ pci_remove_resource_files(pdev);
+ err_config_file:
+- if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
+- sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
+- else
++ if (pdev->cfg_size > PCI_CFG_SPACE_SIZE)
+ sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
++ else
++ sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
+ err:
+ return retval;
+ }
+@@ -1461,10 +1461,10 @@ void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
+
+ pci_remove_capabilities_sysfs(pdev);
+
+- if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
+- sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
+- else
++ if (pdev->cfg_size > PCI_CFG_SPACE_SIZE)
+ sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
++ else
++ sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
+
+ pci_remove_resource_files(pdev);
+
+diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
+index ae12c0317645..5d8c049fe503 100644
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -288,6 +288,18 @@ static void quirk_citrine(struct pci_dev *dev)
+ }
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
+
++/*
++ * This chip can cause bus lockups if config addresses above 0x600
++ * are read or written.
++ */
++static void quirk_nfp6000(struct pci_dev *dev)
++{
++ dev->cfg_size = 0x600;
++}
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
++
+ /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
+ static void quirk_extend_bar_to_page(struct pci_dev *dev)
+ {
+diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
+index 7de3b64bf142..4e1b3bf58093 100644
+--- a/drivers/pinctrl/pinctrl-amd.c
++++ b/drivers/pinctrl/pinctrl-amd.c
+@@ -48,17 +48,6 @@ static int amd_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
+
+ spin_lock_irqsave(&gpio_dev->lock, flags);
+ pin_reg = readl(gpio_dev->base + offset * 4);
+- /*
+- * Suppose BIOS or Bootloader sets specific debounce for the
+- * GPIO. if not, set debounce to be 2.75ms and remove glitch.
+- */
+- if ((pin_reg & DB_TMR_OUT_MASK) == 0) {
+- pin_reg |= 0xf;
+- pin_reg |= BIT(DB_TMR_OUT_UNIT_OFF);
+- pin_reg |= DB_TYPE_REMOVE_GLITCH << DB_CNTRL_OFF;
+- pin_reg &= ~BIT(DB_TMR_LARGE_OFF);
+- }
+-
+ pin_reg &= ~BIT(OUTPUT_ENABLE_OFF);
+ writel(pin_reg, gpio_dev->base + offset * 4);
+ spin_unlock_irqrestore(&gpio_dev->lock, flags);
+@@ -331,15 +320,6 @@ static void amd_gpio_irq_enable(struct irq_data *d)
+
+ spin_lock_irqsave(&gpio_dev->lock, flags);
+ pin_reg = readl(gpio_dev->base + (d->hwirq)*4);
+- /*
+- Suppose BIOS or Bootloader sets specific debounce for the
+- GPIO. if not, set debounce to be 2.75ms.
+- */
+- if ((pin_reg & DB_TMR_OUT_MASK) == 0) {
+- pin_reg |= 0xf;
+- pin_reg |= BIT(DB_TMR_OUT_UNIT_OFF);
+- pin_reg &= ~BIT(DB_TMR_LARGE_OFF);
+- }
+ pin_reg |= BIT(INTERRUPT_ENABLE_OFF);
+ pin_reg |= BIT(INTERRUPT_MASK_OFF);
+ writel(pin_reg, gpio_dev->base + (d->hwirq)*4);
+diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
+index 57fd66357b95..028d7f76e94e 100644
+--- a/drivers/s390/block/dasd.c
++++ b/drivers/s390/block/dasd.c
+@@ -1582,9 +1582,18 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
+ unsigned long long now;
+ int expires;
+
++ cqr = (struct dasd_ccw_req *) intparm;
+ if (IS_ERR(irb)) {
+ switch (PTR_ERR(irb)) {
+ case -EIO:
++ if (cqr && cqr->status == DASD_CQR_CLEAR_PENDING) {
++ device = (struct dasd_device *) cqr->startdev;
++ cqr->status = DASD_CQR_CLEARED;
++ dasd_device_clear_timer(device);
++ wake_up(&dasd_flush_wq);
++ dasd_schedule_device_bh(device);
++ return;
++ }
+ break;
+ case -ETIMEDOUT:
+ DBF_EVENT_DEVID(DBF_WARNING, cdev, "%s: "
+@@ -1600,7 +1609,6 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
+ }
+
+ now = get_tod_clock();
+- cqr = (struct dasd_ccw_req *) intparm;
+ /* check for conditions that should be handled immediately */
+ if (!cqr ||
+ !(scsw_dstat(&irb->scsw) == (DEV_STAT_CHN_END | DEV_STAT_DEV_END) &&
+diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
+index 54195a117f72..f78cc943d230 100644
+--- a/drivers/scsi/aacraid/commctrl.c
++++ b/drivers/scsi/aacraid/commctrl.c
+@@ -63,7 +63,7 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
+ struct fib *fibptr;
+ struct hw_fib * hw_fib = (struct hw_fib *)0;
+ dma_addr_t hw_fib_pa = (dma_addr_t)0LL;
+- unsigned size;
++ unsigned int size, osize;
+ int retval;
+
+ if (dev->in_reset) {
+@@ -87,7 +87,8 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
+ * will not overrun the buffer when we copy the memory. Return
+ * an error if we would.
+ */
+- size = le16_to_cpu(kfib->header.Size) + sizeof(struct aac_fibhdr);
++ osize = size = le16_to_cpu(kfib->header.Size) +
++ sizeof(struct aac_fibhdr);
+ if (size < le16_to_cpu(kfib->header.SenderSize))
+ size = le16_to_cpu(kfib->header.SenderSize);
+ if (size > dev->max_fib_size) {
+@@ -118,6 +119,14 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
+ goto cleanup;
+ }
+
++ /* Sanity check the second copy */
++ if ((osize != le16_to_cpu(kfib->header.Size) +
++ sizeof(struct aac_fibhdr))
++ || (size < le16_to_cpu(kfib->header.SenderSize))) {
++ retval = -EINVAL;
++ goto cleanup;
++ }
++
+ if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) {
+ aac_adapter_interrupt(dev);
+ /*
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index 09084c9da8b7..41dcefe67b43 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1346,7 +1346,6 @@ made_compressed_probe:
+ spin_lock_init(&acm->write_lock);
+ spin_lock_init(&acm->read_lock);
+ mutex_init(&acm->mutex);
+- acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
+ acm->is_int_ep = usb_endpoint_xfer_int(epread);
+ if (acm->is_int_ep)
+ acm->bInterval = epread->bInterval;
+@@ -1386,14 +1385,14 @@ made_compressed_probe:
+ urb->transfer_dma = rb->dma;
+ if (acm->is_int_ep) {
+ usb_fill_int_urb(urb, acm->dev,
+- acm->rx_endpoint,
++ usb_rcvintpipe(usb_dev, epread->bEndpointAddress),
+ rb->base,
+ acm->readsize,
+ acm_read_bulk_callback, rb,
+ acm->bInterval);
+ } else {
+ usb_fill_bulk_urb(urb, acm->dev,
+- acm->rx_endpoint,
++ usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress),
+ rb->base,
+ acm->readsize,
+ acm_read_bulk_callback, rb);
+diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
+index ac830e0ae38b..bae1e3717d20 100644
+--- a/drivers/usb/class/cdc-acm.h
++++ b/drivers/usb/class/cdc-acm.h
+@@ -95,7 +95,6 @@ struct acm {
+ struct urb *read_urbs[ACM_NR];
+ struct acm_rb read_buffers[ACM_NR];
+ int rx_buflimit;
+- int rx_endpoint;
+ spinlock_t read_lock;
+ int write_used; /* number of non-empty write buffers */
+ int transmitting;
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index 563d84eb484d..c98f78b0bf11 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -1298,8 +1298,6 @@ static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type)
+ struct usb_device *hdev = hub->hdev;
+ int i;
+
+- cancel_delayed_work_sync(&hub->init_work);
+-
+ /* hub_wq and related activity won't re-trigger */
+ hub->quiescing = 1;
+
+diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
+index 830f020230c4..c702f5d941d9 100644
+--- a/drivers/usb/dwc3/dwc3-pci.c
++++ b/drivers/usb/dwc3/dwc3-pci.c
+@@ -24,14 +24,17 @@
+
+ #include "platform_data.h"
+
+-#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
+-#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce
+-#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf
+-#define PCI_DEVICE_ID_INTEL_BYT 0x0f37
+-#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e
+-#define PCI_DEVICE_ID_INTEL_BSW 0x22B7
+-#define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30
+-#define PCI_DEVICE_ID_INTEL_SPTH 0xa130
++#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
++#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce
++#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf
++#define PCI_DEVICE_ID_INTEL_BYT 0x0f37
++#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e
++#define PCI_DEVICE_ID_INTEL_BSW 0x22b7
++#define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30
++#define PCI_DEVICE_ID_INTEL_SPTH 0xa130
++#define PCI_DEVICE_ID_INTEL_BXT 0x0aaa
++#define PCI_DEVICE_ID_INTEL_APL 0x5aaa
++#define PCI_DEVICE_ID_INTEL_KBP 0xa2b0
+
+ static int dwc3_pci_quirks(struct pci_dev *pdev)
+ {
+@@ -166,6 +169,9 @@ static const struct pci_device_id dwc3_pci_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
++ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
++ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
++ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
+ { } /* Terminating Entry */
+ };
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index f4c6e81df034..a5e1b8b39ff5 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -1810,7 +1810,8 @@ static void dwc3_gadget_free_endpoints(struct dwc3 *dwc)
+
+ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
+ struct dwc3_request *req, struct dwc3_trb *trb,
+- const struct dwc3_event_depevt *event, int status)
++ const struct dwc3_event_depevt *event, int status,
++ int chain)
+ {
+ unsigned int count;
+ unsigned int s_pkt = 0;
+@@ -1818,6 +1819,19 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
+
+ trace_dwc3_complete_trb(dep, trb);
+
++ /*
++ * If we're in the middle of series of chained TRBs and we
++ * receive a short transfer along the way, DWC3 will skip
++ * through all TRBs including the last TRB in the chain (the
++ * where CHN bit is zero. DWC3 will also avoid clearing HWO
++ * bit and SW has to do it manually.
++ *
++ * We're going to do that here to avoid problems of HW trying
++ * to use bogus TRBs for transfers.
++ */
++ if (chain && (trb->ctrl & DWC3_TRB_CTRL_HWO))
++ trb->ctrl &= ~DWC3_TRB_CTRL_HWO;
++
+ if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)
+ /*
+ * We continue despite the error. There is not much we
+@@ -1829,6 +1843,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
+ */
+ dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n",
+ dep->name, trb);
++
+ count = trb->size & DWC3_TRB_SIZE_MASK;
+
+ if (dep->direction) {
+@@ -1866,15 +1881,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
+ s_pkt = 1;
+ }
+
+- /*
+- * We assume here we will always receive the entire data block
+- * which we should receive. Meaning, if we program RX to
+- * receive 4K but we receive only 2K, we assume that's all we
+- * should receive and we simply bounce the request back to the
+- * gadget driver for further processing.
+- */
+- req->request.actual += req->request.length - count;
+- if (s_pkt)
++ if (s_pkt && !chain)
+ return 1;
+ if ((event->status & DEPEVT_STATUS_LST) &&
+ (trb->ctrl & (DWC3_TRB_CTRL_LST |
+@@ -1893,14 +1900,19 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
+ struct dwc3_trb *trb;
+ unsigned int slot;
+ unsigned int i;
++ int count = 0;
+ int ret;
+
+ do {
++ int chain;
++
+ req = next_request(&dep->req_queued);
+ if (!req) {
+ WARN_ON_ONCE(1);
+ return 1;
+ }
++
++ chain = req->request.num_mapped_sgs > 0;
+ i = 0;
+ do {
+ slot = req->start_slot + i;
+@@ -1909,13 +1921,22 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
+ slot++;
+ slot %= DWC3_TRB_NUM;
+ trb = &dep->trb_pool[slot];
++ count += trb->size & DWC3_TRB_SIZE_MASK;
+
+ ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb,
+- event, status);
++ event, status, chain);
+ if (ret)
+ break;
+ } while (++i < req->request.num_mapped_sgs);
+
++ /*
++ * We assume here we will always receive the entire data block
++ * which we should receive. Meaning, if we program RX to
++ * receive 4K but we receive only 2K, we assume that's all we
++ * should receive and we simply bounce the request back to the
++ * gadget driver for further processing.
++ */
++ req->request.actual += req->request.length - count;
+ dwc3_gadget_giveback(dep, req, status);
+
+ if (ret)
+diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
+index f4d88dfb26a7..53946d107bc2 100644
+--- a/drivers/usb/host/ehci-hcd.c
++++ b/drivers/usb/host/ehci-hcd.c
+@@ -331,11 +331,11 @@ static void ehci_turn_off_all_ports(struct ehci_hcd *ehci)
+ int port = HCS_N_PORTS(ehci->hcs_params);
+
+ while (port--) {
+- ehci_writel(ehci, PORT_RWC_BITS,
+- &ehci->regs->port_status[port]);
+ spin_unlock_irq(&ehci->lock);
+ ehci_port_power(ehci, port, false);
+ spin_lock_irq(&ehci->lock);
++ ehci_writel(ehci, PORT_RWC_BITS,
++ &ehci->regs->port_status[port]);
+ }
+ }
+
+diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
+index ee07ba41c8db..cc1993c5556e 100644
+--- a/drivers/usb/host/xhci-hub.c
++++ b/drivers/usb/host/xhci-hub.c
+@@ -276,6 +276,9 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend)
+
+ ret = 0;
+ virt_dev = xhci->devs[slot_id];
++ if (!virt_dev)
++ return -ENODEV;
++
+ cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO);
+ if (!cmd) {
+ xhci_dbg(xhci, "Couldn't allocate command structure.\n");
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index 6ef255142e01..f7e917866e05 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -1331,12 +1331,6 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
+
+ cmd = list_entry(xhci->cmd_list.next, struct xhci_command, cmd_list);
+
+- if (cmd->command_trb != xhci->cmd_ring->dequeue) {
+- xhci_err(xhci,
+- "Command completion event does not match command\n");
+- return;
+- }
+-
+ del_timer(&xhci->cmd_timer);
+
+ trace_xhci_cmd_completion(cmd_trb, (struct xhci_generic_trb *) event);
+@@ -1348,6 +1342,13 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
+ xhci_handle_stopped_cmd_ring(xhci, cmd);
+ return;
+ }
++
++ if (cmd->command_trb != xhci->cmd_ring->dequeue) {
++ xhci_err(xhci,
++ "Command completion event does not match command\n");
++ return;
++ }
++
+ /*
+ * Host aborted the command ring, check if the current command was
+ * supposed to be aborted, otherwise continue normally.
+diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
+index bbddc44ce8bc..c33ad2181b33 100644
+--- a/drivers/usb/misc/usbtest.c
++++ b/drivers/usb/misc/usbtest.c
+@@ -545,7 +545,6 @@ static void sg_timeout(unsigned long _req)
+ {
+ struct usb_sg_request *req = (struct usb_sg_request *) _req;
+
+- req->status = -ETIMEDOUT;
+ usb_sg_cancel(req);
+ }
+
+@@ -576,8 +575,10 @@ static int perform_sglist(
+ mod_timer(&sg_timer, jiffies +
+ msecs_to_jiffies(SIMPLE_IO_TIMEOUT));
+ usb_sg_wait(req);
+- del_timer_sync(&sg_timer);
+- retval = req->status;
++ if (!del_timer_sync(&sg_timer))
++ retval = -ETIMEDOUT;
++ else
++ retval = req->status;
+
+ /* FIXME check resulting data pattern */
+
+diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
+index db565f620f82..36e5b5c530bd 100644
+--- a/drivers/usb/renesas_usbhs/fifo.c
++++ b/drivers/usb/renesas_usbhs/fifo.c
+@@ -869,7 +869,7 @@ static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done)
+
+ /* use PIO if packet is less than pio_dma_border or pipe is DCP */
+ if ((len < usbhs_get_dparam(priv, pio_dma_border)) ||
+- usbhs_pipe_is_dcp(pipe))
++ usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC))
+ goto usbhsf_pio_prepare_push;
+
+ /* check data length if this driver don't use USB-DMAC */
+@@ -974,7 +974,7 @@ static int usbhsf_dma_prepare_pop_with_usb_dmac(struct usbhs_pkt *pkt,
+
+ /* use PIO if packet is less than pio_dma_border or pipe is DCP */
+ if ((pkt->length < usbhs_get_dparam(priv, pio_dma_border)) ||
+- usbhs_pipe_is_dcp(pipe))
++ usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC))
+ goto usbhsf_pio_prepare_pop;
+
+ fifo = usbhsf_get_dma_fifo(priv, pkt);
+diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
+index 74af77a022a8..275c9aebc4c9 100644
+--- a/drivers/usb/renesas_usbhs/mod_gadget.c
++++ b/drivers/usb/renesas_usbhs/mod_gadget.c
+@@ -614,10 +614,13 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
+ * use dmaengine if possible.
+ * It will use pio handler if impossible.
+ */
+- if (usb_endpoint_dir_in(desc))
++ if (usb_endpoint_dir_in(desc)) {
+ pipe->handler = &usbhs_fifo_dma_push_handler;
+- else
++ } else {
+ pipe->handler = &usbhs_fifo_dma_pop_handler;
++ usbhs_xxxsts_clear(priv, BRDYSTS,
++ usbhs_pipe_number(pipe));
++ }
+
+ ret = 0;
+ }
+diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
+index b61f12160d37..8c48c9d83d48 100644
+--- a/drivers/usb/serial/ftdi_sio.c
++++ b/drivers/usb/serial/ftdi_sio.c
+@@ -648,6 +648,8 @@ static const struct usb_device_id id_table_combined[] = {
+ { USB_DEVICE(FTDI_VID, FTDI_ELV_TFD128_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_ELV_FM3RX_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_ELV_WS777_PID) },
++ { USB_DEVICE(FTDI_VID, FTDI_PALMSENS_PID) },
++ { USB_DEVICE(FTDI_VID, FTDI_IVIUM_XSTAT_PID) },
+ { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
+ { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
+ { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
+@@ -1008,6 +1010,7 @@ static const struct usb_device_id id_table_combined[] = {
+ { USB_DEVICE(ICPDAS_VID, ICPDAS_I7560U_PID) },
+ { USB_DEVICE(ICPDAS_VID, ICPDAS_I7561U_PID) },
+ { USB_DEVICE(ICPDAS_VID, ICPDAS_I7563U_PID) },
++ { USB_DEVICE(WICED_VID, WICED_USB20706V2_PID) },
+ { } /* Terminating entry */
+ };
+
+diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
+index 334bc600282d..48db84f25cc9 100644
+--- a/drivers/usb/serial/ftdi_sio_ids.h
++++ b/drivers/usb/serial/ftdi_sio_ids.h
+@@ -406,6 +406,12 @@
+ #define FTDI_4N_GALAXY_DE_3_PID 0xF3C2
+
+ /*
++ * Ivium Technologies product IDs
++ */
++#define FTDI_PALMSENS_PID 0xf440
++#define FTDI_IVIUM_XSTAT_PID 0xf441
++
++/*
+ * Linx Technologies product ids
+ */
+ #define LINX_SDMUSBQSS_PID 0xF448 /* Linx SDM-USB-QS-S */
+@@ -673,6 +679,12 @@
+ #define INTREPID_NEOVI_PID 0x0701
+
+ /*
++ * WICED USB UART
++ */
++#define WICED_VID 0x0A5C
++#define WICED_USB20706V2_PID 0x6422
++
++/*
+ * Definitions for ID TECH (www.idt-net.com) devices
+ */
+ #define IDTECH_VID 0x0ACD /* ID TECH Vendor ID */
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 2a7bf26c68e6..ca03fbfa2a32 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -277,6 +277,12 @@ static void option_instat_callback(struct urb *urb);
+ #define TELIT_PRODUCT_LE920 0x1200
+ #define TELIT_PRODUCT_LE910 0x1201
+ #define TELIT_PRODUCT_LE910_USBCFG4 0x1206
++#define TELIT_PRODUCT_LE920A4_1207 0x1207
++#define TELIT_PRODUCT_LE920A4_1208 0x1208
++#define TELIT_PRODUCT_LE920A4_1211 0x1211
++#define TELIT_PRODUCT_LE920A4_1212 0x1212
++#define TELIT_PRODUCT_LE920A4_1213 0x1213
++#define TELIT_PRODUCT_LE920A4_1214 0x1214
+
+ /* ZTE PRODUCTS */
+ #define ZTE_VENDOR_ID 0x19d2
+@@ -636,6 +642,11 @@ static const struct option_blacklist_info sierra_mc73xx_blacklist = {
+ .reserved = BIT(8) | BIT(10) | BIT(11),
+ };
+
++static const struct option_blacklist_info telit_le920a4_blacklist_1 = {
++ .sendsetup = BIT(0),
++ .reserved = BIT(1),
++};
++
+ static const struct option_blacklist_info telit_le922_blacklist_usbcfg0 = {
+ .sendsetup = BIT(2),
+ .reserved = BIT(0) | BIT(1) | BIT(3),
+@@ -1215,6 +1226,16 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920),
+ .driver_info = (kernel_ulong_t)&telit_le920_blacklist },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1207) },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1208),
++ .driver_info = (kernel_ulong_t)&telit_le920a4_blacklist_1 },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1211),
++ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1212),
++ .driver_info = (kernel_ulong_t)&telit_le920a4_blacklist_1 },
++ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1213, 0xff) },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1214),
++ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0002, 0xff, 0xff, 0xff),
+ .driver_info = (kernel_ulong_t)&net_intf1_blacklist },
+@@ -1978,6 +1999,7 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */
++ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x7e11, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/A3 */
+ { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) }, /* OLICARD300 - MT6225 */
+ { USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) },
+ { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) },
+diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
+index 46f1f13b41f1..a0ca291bc07f 100644
+--- a/drivers/usb/serial/usb-serial.c
++++ b/drivers/usb/serial/usb-serial.c
+@@ -1432,7 +1432,7 @@ int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[]
+
+ rc = usb_register(udriver);
+ if (rc)
+- return rc;
++ goto failed_usb_register;
+
+ for (sd = serial_drivers; *sd; ++sd) {
+ (*sd)->usb_driver = udriver;
+@@ -1450,6 +1450,8 @@ int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[]
+ while (sd-- > serial_drivers)
+ usb_serial_deregister(*sd);
+ usb_deregister(udriver);
++failed_usb_register:
++ kfree(udriver);
+ return rc;
+ }
+ EXPORT_SYMBOL_GPL(usb_serial_register_drivers);
+diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
+index 636435b41293..2209040bff95 100644
+--- a/drivers/vhost/scsi.c
++++ b/drivers/vhost/scsi.c
+@@ -89,7 +89,7 @@ struct vhost_scsi_cmd {
+ struct scatterlist *tvc_prot_sgl;
+ struct page **tvc_upages;
+ /* Pointer to response header iovec */
+- struct iovec *tvc_resp_iov;
++ struct iovec tvc_resp_iov;
+ /* Pointer to vhost_scsi for our device */
+ struct vhost_scsi *tvc_vhost;
+ /* Pointer to vhost_virtqueue for the cmd */
+@@ -716,7 +716,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
+ memcpy(v_rsp.sense, cmd->tvc_sense_buf,
+ se_cmd->scsi_sense_length);
+
+- iov_iter_init(&iov_iter, READ, cmd->tvc_resp_iov,
++ iov_iter_init(&iov_iter, READ, &cmd->tvc_resp_iov,
+ cmd->tvc_in_iovs, sizeof(v_rsp));
+ ret = copy_to_iter(&v_rsp, sizeof(v_rsp), &iov_iter);
+ if (likely(ret == sizeof(v_rsp))) {
+@@ -1212,7 +1212,7 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
+ }
+ cmd->tvc_vhost = vs;
+ cmd->tvc_vq = vq;
+- cmd->tvc_resp_iov = &vq->iov[out];
++ cmd->tvc_resp_iov = vq->iov[out];
+ cmd->tvc_in_iovs = in;
+
+ pr_debug("vhost_scsi got command opcode: %#02x, lun: %d\n",
+diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
+index 531e76474983..0e0eb10f82a0 100644
+--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
++++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
+@@ -316,7 +316,7 @@ static int xenbus_write_transaction(unsigned msg_type,
+ rc = -ENOMEM;
+ goto out;
+ }
+- } else {
++ } else if (msg_type == XS_TRANSACTION_END) {
+ list_for_each_entry(trans, &u->transactions, list)
+ if (trans->handle.id == u->u.msg.tx_id)
+ break;
+diff --git a/fs/seq_file.c b/fs/seq_file.c
+index 555f82155be8..4408057d1dc8 100644
+--- a/fs/seq_file.c
++++ b/fs/seq_file.c
+@@ -212,8 +212,10 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
+ size -= n;
+ buf += n;
+ copied += n;
+- if (!m->count)
++ if (!m->count) {
++ m->from = 0;
+ m->index++;
++ }
+ if (!size)
+ goto Done;
+ }
+diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
+index b45345d701e7..51157da3f76e 100644
+--- a/fs/ubifs/tnc_commit.c
++++ b/fs/ubifs/tnc_commit.c
+@@ -370,7 +370,7 @@ static int layout_in_gaps(struct ubifs_info *c, int cnt)
+
+ p = c->gap_lebs;
+ do {
+- ubifs_assert(p < c->gap_lebs + sizeof(int) * c->lst.idx_lebs);
++ ubifs_assert(p < c->gap_lebs + c->lst.idx_lebs);
+ written = layout_leb_in_gaps(c, p);
+ if (written < 0) {
+ err = written;
+diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
+index 2f7b9a40f627..9b6f5dc58732 100644
+--- a/include/linux/pci_ids.h
++++ b/include/linux/pci_ids.h
+@@ -2483,6 +2483,13 @@
+ #define PCI_DEVICE_ID_KORENIX_JETCARDF2 0x1700
+ #define PCI_DEVICE_ID_KORENIX_JETCARDF3 0x17ff
+
++#define PCI_VENDOR_ID_NETRONOME 0x19ee
++#define PCI_DEVICE_ID_NETRONOME_NFP3200 0x3200
++#define PCI_DEVICE_ID_NETRONOME_NFP3240 0x3240
++#define PCI_DEVICE_ID_NETRONOME_NFP4000 0x4000
++#define PCI_DEVICE_ID_NETRONOME_NFP6000 0x6000
++#define PCI_DEVICE_ID_NETRONOME_NFP6000_VF 0x6003
++
+ #define PCI_VENDOR_ID_QMI 0x1a32
+
+ #define PCI_VENDOR_ID_AZWAVE 0x1a3b
+diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
+index cb346f26a22d..a89bca964b1f 100644
+--- a/kernel/events/uprobes.c
++++ b/kernel/events/uprobes.c
+@@ -179,8 +179,10 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr,
+ mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end);
+ err = -EAGAIN;
+ ptep = page_check_address(page, mm, addr, &ptl, 0);
+- if (!ptep)
++ if (!ptep) {
++ mem_cgroup_cancel_charge(kpage, memcg);
+ goto unlock;
++ }
+
+ get_page(kpage);
+ page_add_new_anon_rmap(kpage, vma, addr);
+@@ -207,7 +209,6 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr,
+
+ err = 0;
+ unlock:
+- mem_cgroup_cancel_charge(kpage, memcg);
+ mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end);
+ unlock_page(page);
+ return err;
+diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
+index 65dbf8aee751..8fcc801fde15 100644
+--- a/kernel/time/timekeeping.c
++++ b/kernel/time/timekeeping.c
+@@ -419,7 +419,10 @@ static __always_inline u64 __ktime_get_fast_ns(struct tk_fast *tkf)
+ do {
+ seq = raw_read_seqcount(&tkf->seq);
+ tkr = tkf->base + (seq & 0x01);
+- now = ktime_to_ns(tkr->base) + timekeeping_get_ns(tkr);
++ now = ktime_to_ns(tkr->base);
++
++ now += clocksource_delta(tkr->read(tkr->clock),
++ tkr->cycle_last, tkr->mask);
+ } while (read_seqcount_retry(&tkf->seq, seq));
+
+ return now;
+diff --git a/kernel/time/timekeeping_debug.c b/kernel/time/timekeeping_debug.c
+index f6bd65236712..107310a6f36f 100644
+--- a/kernel/time/timekeeping_debug.c
++++ b/kernel/time/timekeeping_debug.c
+@@ -23,7 +23,9 @@
+
+ #include "timekeeping_internal.h"
+
+-static unsigned int sleep_time_bin[32] = {0};
++#define NUM_BINS 32
++
++static unsigned int sleep_time_bin[NUM_BINS] = {0};
+
+ static int tk_debug_show_sleep_time(struct seq_file *s, void *data)
+ {
+@@ -69,6 +71,9 @@ late_initcall(tk_debug_sleep_time_init);
+
+ void tk_debug_account_sleep_time(struct timespec64 *t)
+ {
+- sleep_time_bin[fls(t->tv_sec)]++;
++ /* Cap bin index so we don't overflow the array */
++ int bin = min(fls(t->tv_sec), NUM_BINS-1);
++
++ sleep_time_bin[bin]++;
+ }
+
+diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
+index 87463c814896..36b93adfd7da 100644
+--- a/net/ipv4/tcp_input.c
++++ b/net/ipv4/tcp_input.c
+@@ -89,7 +89,7 @@ int sysctl_tcp_adv_win_scale __read_mostly = 1;
+ EXPORT_SYMBOL(sysctl_tcp_adv_win_scale);
+
+ /* rfc5961 challenge ack rate limiting */
+-int sysctl_tcp_challenge_ack_limit = 100;
++int sysctl_tcp_challenge_ack_limit = 1000;
+
+ int sysctl_tcp_stdurg __read_mostly;
+ int sysctl_tcp_rfc1337 __read_mostly;
+@@ -3343,6 +3343,23 @@ static int tcp_ack_update_window(struct sock *sk, const struct sk_buff *skb, u32
+ return flag;
+ }
+
++static bool __tcp_oow_rate_limited(struct net *net, int mib_idx,
++ u32 *last_oow_ack_time)
++{
++ if (*last_oow_ack_time) {
++ s32 elapsed = (s32)(tcp_time_stamp - *last_oow_ack_time);
++
++ if (0 <= elapsed && elapsed < sysctl_tcp_invalid_ratelimit) {
++ NET_INC_STATS(net, mib_idx);
++ return true; /* rate-limited: don't send yet! */
++ }
++ }
++
++ *last_oow_ack_time = tcp_time_stamp;
++
++ return false; /* not rate-limited: go ahead, send dupack now! */
++}
++
+ /* Return true if we're currently rate-limiting out-of-window ACKs and
+ * thus shouldn't send a dupack right now. We rate-limit dupacks in
+ * response to out-of-window SYNs or ACKs to mitigate ACK loops or DoS
+@@ -3356,21 +3373,9 @@ bool tcp_oow_rate_limited(struct net *net, const struct sk_buff *skb,
+ /* Data packets without SYNs are not likely part of an ACK loop. */
+ if ((TCP_SKB_CB(skb)->seq != TCP_SKB_CB(skb)->end_seq) &&
+ !tcp_hdr(skb)->syn)
+- goto not_rate_limited;
+-
+- if (*last_oow_ack_time) {
+- s32 elapsed = (s32)(tcp_time_stamp - *last_oow_ack_time);
+-
+- if (0 <= elapsed && elapsed < sysctl_tcp_invalid_ratelimit) {
+- NET_INC_STATS_BH(net, mib_idx);
+- return true; /* rate-limited: don't send yet! */
+- }
+- }
+-
+- *last_oow_ack_time = tcp_time_stamp;
++ return false;
+
+-not_rate_limited:
+- return false; /* not rate-limited: go ahead, send dupack now! */
++ return __tcp_oow_rate_limited(net, mib_idx, last_oow_ack_time);
+ }
+
+ /* RFC 5961 7 [ACK Throttling] */
+@@ -3380,21 +3385,26 @@ static void tcp_send_challenge_ack(struct sock *sk, const struct sk_buff *skb)
+ static u32 challenge_timestamp;
+ static unsigned int challenge_count;
+ struct tcp_sock *tp = tcp_sk(sk);
+- u32 now;
++ u32 count, now;
+
+ /* First check our per-socket dupack rate limit. */
+- if (tcp_oow_rate_limited(sock_net(sk), skb,
+- LINUX_MIB_TCPACKSKIPPEDCHALLENGE,
+- &tp->last_oow_ack_time))
++ if (__tcp_oow_rate_limited(sock_net(sk),
++ LINUX_MIB_TCPACKSKIPPEDCHALLENGE,
++ &tp->last_oow_ack_time))
+ return;
+
+- /* Then check the check host-wide RFC 5961 rate limit. */
++ /* Then check host-wide RFC 5961 rate limit. */
+ now = jiffies / HZ;
+ if (now != challenge_timestamp) {
++ u32 half = (sysctl_tcp_challenge_ack_limit + 1) >> 1;
++
+ challenge_timestamp = now;
+- challenge_count = 0;
++ WRITE_ONCE(challenge_count, half +
++ prandom_u32_max(sysctl_tcp_challenge_ack_limit));
+ }
+- if (++challenge_count <= sysctl_tcp_challenge_ack_limit) {
++ count = READ_ONCE(challenge_count);
++ if (count > 0) {
++ WRITE_ONCE(challenge_count, count - 1);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPCHALLENGEACK);
+ tcp_send_ack(sk);
+ }
+diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
+index f06d42267306..89ed0206882c 100644
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -907,7 +907,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
+
+ /* free all potentially still buffered bcast frames */
+ local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
+- skb_queue_purge(&sdata->u.ap.ps.bc_buf);
++ ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
+
+ mutex_lock(&local->mtx);
+ ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
+diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
+index 5787f15a3a12..8dbdbaea70fd 100644
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -355,7 +355,7 @@ static void purge_old_ps_buffers(struct ieee80211_local *local)
+ skb = skb_dequeue(&ps->bc_buf);
+ if (skb) {
+ purged++;
+- dev_kfree_skb(skb);
++ ieee80211_free_txskb(&local->hw, skb);
+ }
+ total += skb_queue_len(&ps->bc_buf);
+ }
+@@ -438,7 +438,7 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
+ if (skb_queue_len(&ps->bc_buf) >= AP_MAX_BC_BUFFER) {
+ ps_dbg(tx->sdata,
+ "BC TX buffer full - dropping the oldest frame\n");
+- dev_kfree_skb(skb_dequeue(&ps->bc_buf));
++ ieee80211_free_txskb(&tx->local->hw, skb_dequeue(&ps->bc_buf));
+ } else
+ tx->local->total_ps_buffered++;
+
+@@ -3247,7 +3247,7 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
+ sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev);
+ if (!ieee80211_tx_prepare(sdata, &tx, NULL, skb))
+ break;
+- dev_kfree_skb_any(skb);
++ ieee80211_free_txskb(hw, skb);
+ }
+
+ info = IEEE80211_SKB_CB(skb);
+diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
+index 841d05946b88..5420f2fe717e 100644
+--- a/sound/soc/atmel/atmel_ssc_dai.c
++++ b/sound/soc/atmel/atmel_ssc_dai.c
+@@ -298,8 +298,9 @@ static int atmel_ssc_startup(struct snd_pcm_substream *substream,
+ clk_enable(ssc_p->ssc->clk);
+ ssc_p->mck_rate = clk_get_rate(ssc_p->ssc->clk);
+
+- /* Reset the SSC to keep it at a clean status */
+- ssc_writel(ssc_p->ssc->regs, CR, SSC_BIT(CR_SWRST));
++ /* Reset the SSC unless initialized to keep it in a clean state */
++ if (!ssc_p->initialized)
++ ssc_writel(ssc_p->ssc->regs, CR, SSC_BIT(CR_SWRST));
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ dir = 0;
+diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
+index 204cc074adb9..41aa3355e920 100644
+--- a/sound/usb/line6/pcm.c
++++ b/sound/usb/line6/pcm.c
+@@ -55,7 +55,6 @@ static int snd_line6_impulse_volume_put(struct snd_kcontrol *kcontrol,
+ err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE);
+ if (err < 0) {
+ line6pcm->impulse_volume = 0;
+- line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE);
+ return err;
+ }
+ } else {
+@@ -211,7 +210,9 @@ static void line6_stream_stop(struct snd_line6_pcm *line6pcm, int direction,
+ spin_lock_irqsave(&pstr->lock, flags);
+ clear_bit(type, &pstr->running);
+ if (!pstr->running) {
++ spin_unlock_irqrestore(&pstr->lock, flags);
+ line6_unlink_audio_urbs(line6pcm, pstr);
++ spin_lock_irqsave(&pstr->lock, flags);
+ if (direction == SNDRV_PCM_STREAM_CAPTURE) {
+ line6pcm->prev_fbuf = NULL;
+ line6pcm->prev_fsize = 0;
+diff --git a/sound/usb/line6/pod.c b/sound/usb/line6/pod.c
+index daf81d169a42..45dd34874f43 100644
+--- a/sound/usb/line6/pod.c
++++ b/sound/usb/line6/pod.c
+@@ -244,8 +244,8 @@ static int pod_set_system_param_int(struct usb_line6_pod *pod, int value,
+ static ssize_t serial_number_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+ {
+- struct usb_interface *interface = to_usb_interface(dev);
+- struct usb_line6_pod *pod = usb_get_intfdata(interface);
++ struct snd_card *card = dev_to_snd_card(dev);
++ struct usb_line6_pod *pod = card->private_data;
+
+ return sprintf(buf, "%u\n", pod->serial_number);
+ }
+@@ -256,8 +256,8 @@ static ssize_t serial_number_show(struct device *dev,
+ static ssize_t firmware_version_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+ {
+- struct usb_interface *interface = to_usb_interface(dev);
+- struct usb_line6_pod *pod = usb_get_intfdata(interface);
++ struct snd_card *card = dev_to_snd_card(dev);
++ struct usb_line6_pod *pod = card->private_data;
+
+ return sprintf(buf, "%d.%02d\n", pod->firmware_version / 100,
+ pod->firmware_version % 100);
+@@ -269,8 +269,8 @@ static ssize_t firmware_version_show(struct device *dev,
+ static ssize_t device_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+ {
+- struct usb_interface *interface = to_usb_interface(dev);
+- struct usb_line6_pod *pod = usb_get_intfdata(interface);
++ struct snd_card *card = dev_to_snd_card(dev);
++ struct usb_line6_pod *pod = card->private_data;
+
+ return sprintf(buf, "%d\n", pod->device_id);
+ }
diff --git a/1032_linux-4.1.33.patch b/1032_linux-4.1.33.patch
new file mode 100644
index 0000000..17c9a86
--- /dev/null
+++ b/1032_linux-4.1.33.patch
@@ -0,0 +1,982 @@
+diff --git a/Makefile b/Makefile
+index e995f28b6d37..47c47d7c0926 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 32
++SUBLEVEL = 33
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
+index 09c549826c5f..9615fe1701c6 100644
+--- a/arch/arc/include/asm/pgtable.h
++++ b/arch/arc/include/asm/pgtable.h
+@@ -96,7 +96,7 @@
+ #define ___DEF (_PAGE_PRESENT | _PAGE_DEF_CACHEABLE)
+
+ /* Set of bits not changed in pte_modify */
+-#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_SPECIAL)
++#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED)
+
+ /* More Abbrevaited helpers */
+ #define PAGE_U_NONE __pgprot(___DEF)
+diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c
+index b83f3b7737fb..087acb569b63 100644
+--- a/arch/arm/kernel/sys_oabi-compat.c
++++ b/arch/arm/kernel/sys_oabi-compat.c
+@@ -193,15 +193,44 @@ struct oabi_flock64 {
+ pid_t l_pid;
+ } __attribute__ ((packed,aligned(4)));
+
+-asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd,
++static long do_locks(unsigned int fd, unsigned int cmd,
+ unsigned long arg)
+ {
+- struct oabi_flock64 user;
+ struct flock64 kernel;
+- mm_segment_t fs = USER_DS; /* initialized to kill a warning */
+- unsigned long local_arg = arg;
+- int ret;
++ struct oabi_flock64 user;
++ mm_segment_t fs;
++ long ret;
++
++ if (copy_from_user(&user, (struct oabi_flock64 __user *)arg,
++ sizeof(user)))
++ return -EFAULT;
++ kernel.l_type = user.l_type;
++ kernel.l_whence = user.l_whence;
++ kernel.l_start = user.l_start;
++ kernel.l_len = user.l_len;
++ kernel.l_pid = user.l_pid;
++
++ fs = get_fs();
++ set_fs(KERNEL_DS);
++ ret = sys_fcntl64(fd, cmd, (unsigned long)&kernel);
++ set_fs(fs);
++
++ if (!ret && (cmd == F_GETLK64 || cmd == F_OFD_GETLK)) {
++ user.l_type = kernel.l_type;
++ user.l_whence = kernel.l_whence;
++ user.l_start = kernel.l_start;
++ user.l_len = kernel.l_len;
++ user.l_pid = kernel.l_pid;
++ if (copy_to_user((struct oabi_flock64 __user *)arg,
++ &user, sizeof(user)))
++ ret = -EFAULT;
++ }
++ return ret;
++}
+
++asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd,
++ unsigned long arg)
++{
+ switch (cmd) {
+ case F_OFD_GETLK:
+ case F_OFD_SETLK:
+@@ -209,39 +238,11 @@ asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd,
+ case F_GETLK64:
+ case F_SETLK64:
+ case F_SETLKW64:
+- if (copy_from_user(&user, (struct oabi_flock64 __user *)arg,
+- sizeof(user)))
+- return -EFAULT;
+- kernel.l_type = user.l_type;
+- kernel.l_whence = user.l_whence;
+- kernel.l_start = user.l_start;
+- kernel.l_len = user.l_len;
+- kernel.l_pid = user.l_pid;
+- local_arg = (unsigned long)&kernel;
+- fs = get_fs();
+- set_fs(KERNEL_DS);
+- }
+-
+- ret = sys_fcntl64(fd, cmd, local_arg);
++ return do_locks(fd, cmd, arg);
+
+- switch (cmd) {
+- case F_GETLK64:
+- if (!ret) {
+- user.l_type = kernel.l_type;
+- user.l_whence = kernel.l_whence;
+- user.l_start = kernel.l_start;
+- user.l_len = kernel.l_len;
+- user.l_pid = kernel.l_pid;
+- if (copy_to_user((struct oabi_flock64 __user *)arg,
+- &user, sizeof(user)))
+- ret = -EFAULT;
+- }
+- case F_SETLK64:
+- case F_SETLKW64:
+- set_fs(fs);
++ default:
++ return sys_fcntl64(fd, cmd, arg);
+ }
+-
+- return ret;
+ }
+
+ struct oabi_epoll_event {
+diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
+index e4cf63301ff4..c6c4248ab138 100644
+--- a/arch/x86/kernel/cpu/amd.c
++++ b/arch/x86/kernel/cpu/amd.c
+@@ -618,6 +618,17 @@ static void init_amd_gh(struct cpuinfo_x86 *c)
+ set_cpu_bug(c, X86_BUG_AMD_TLB_MMATCH);
+ }
+
++#define MSR_AMD64_DE_CFG 0xC0011029
++
++static void init_amd_ln(struct cpuinfo_x86 *c)
++{
++ /*
++ * Apply erratum 665 fix unconditionally so machines without a BIOS
++ * fix work.
++ */
++ msr_set_bit(MSR_AMD64_DE_CFG, 31);
++}
++
+ static void init_amd_bd(struct cpuinfo_x86 *c)
+ {
+ u64 value;
+@@ -675,6 +686,7 @@ static void init_amd(struct cpuinfo_x86 *c)
+ case 6: init_amd_k7(c); break;
+ case 0xf: init_amd_k8(c); break;
+ case 0x10: init_amd_gh(c); break;
++ case 0x12: init_amd_ln(c); break;
+ case 0x15: init_amd_bd(c); break;
+ }
+
+diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
+index 1f316f066c49..68cf2ec816d5 100644
+--- a/arch/x86/kernel/paravirt.c
++++ b/arch/x86/kernel/paravirt.c
+@@ -55,12 +55,12 @@ asm (".pushsection .entry.text, \"ax\"\n"
+ ".popsection");
+
+ /* identity function, which can be inlined */
+-u32 _paravirt_ident_32(u32 x)
++u32 notrace _paravirt_ident_32(u32 x)
+ {
+ return x;
+ }
+
+-u64 _paravirt_ident_64(u64 x)
++u64 notrace _paravirt_ident_64(u64 x)
+ {
+ return x;
+ }
+diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c
+index ebd8a5f398b0..900cf63d0420 100644
+--- a/drivers/dma/sh/usb-dmac.c
++++ b/drivers/dma/sh/usb-dmac.c
+@@ -600,27 +600,30 @@ static irqreturn_t usb_dmac_isr_channel(int irq, void *dev)
+ {
+ struct usb_dmac_chan *chan = dev;
+ irqreturn_t ret = IRQ_NONE;
+- u32 mask = USB_DMACHCR_TE;
+- u32 check_bits = USB_DMACHCR_TE | USB_DMACHCR_SP;
++ u32 mask = 0;
+ u32 chcr;
++ bool xfer_end = false;
+
+ spin_lock(&chan->vc.lock);
+
+ chcr = usb_dmac_chan_read(chan, USB_DMACHCR);
+- if (chcr & check_bits)
+- mask |= USB_DMACHCR_DE | check_bits;
++ if (chcr & (USB_DMACHCR_TE | USB_DMACHCR_SP)) {
++ mask |= USB_DMACHCR_DE | USB_DMACHCR_TE | USB_DMACHCR_SP;
++ if (chcr & USB_DMACHCR_DE)
++ xfer_end = true;
++ ret |= IRQ_HANDLED;
++ }
+ if (chcr & USB_DMACHCR_NULL) {
+ /* An interruption of TE will happen after we set FTE */
+ mask |= USB_DMACHCR_NULL;
+ chcr |= USB_DMACHCR_FTE;
+ ret |= IRQ_HANDLED;
+ }
+- usb_dmac_chan_write(chan, USB_DMACHCR, chcr & ~mask);
++ if (mask)
++ usb_dmac_chan_write(chan, USB_DMACHCR, chcr & ~mask);
+
+- if (chcr & check_bits) {
++ if (xfer_end)
+ usb_dmac_isr_transfer_end(chan);
+- ret |= IRQ_HANDLED;
+- }
+
+ spin_unlock(&chan->vc.lock);
+
+diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c
+index d8738d4f8df3..78c911be115d 100644
+--- a/drivers/iio/accel/kxsd9.c
++++ b/drivers/iio/accel/kxsd9.c
+@@ -160,6 +160,7 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev,
+ if (ret < 0)
+ goto error_ret;
+ *val = ret;
++ ret = IIO_VAL_INT;
+ break;
+ case IIO_CHAN_INFO_SCALE:
+ ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
+diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
+index 049282e6482f..ce507a405d05 100644
+--- a/drivers/md/dm-crypt.c
++++ b/drivers/md/dm-crypt.c
+@@ -1433,7 +1433,7 @@ static int crypt_alloc_tfms(struct crypt_config *cc, char *ciphermode)
+ unsigned i;
+ int err;
+
+- cc->tfms = kmalloc(cc->tfms_count * sizeof(struct crypto_ablkcipher *),
++ cc->tfms = kzalloc(cc->tfms_count * sizeof(struct crypto_ablkcipher *),
+ GFP_KERNEL);
+ if (!cc->tfms)
+ return -ENOMEM;
+@@ -1898,6 +1898,13 @@ static int crypt_map(struct dm_target *ti, struct bio *bio)
+ return DM_MAPIO_REMAPPED;
+ }
+
++ /*
++ * Check if bio is too large, split as needed.
++ */
++ if (unlikely(bio->bi_iter.bi_size > (BIO_MAX_PAGES << PAGE_SHIFT)) &&
++ bio_data_dir(bio) == WRITE)
++ dm_accept_partial_bio(bio, ((BIO_MAX_PAGES << PAGE_SHIFT) >> SECTOR_SHIFT));
++
+ io = dm_per_bio_data(bio, cc->per_bio_data_size);
+ crypt_io_init(io, cc, bio, dm_target_offset(ti, bio->bi_iter.bi_sector));
+ io->ctx.req = (struct ablkcipher_request *)(io + 1);
+diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
+index 93e08446a87d..9e136baf5fc5 100644
+--- a/drivers/md/dm-log-writes.c
++++ b/drivers/md/dm-log-writes.c
+@@ -259,12 +259,12 @@ static int log_one_block(struct log_writes_c *lc,
+ goto out;
+ sector++;
+
+- bio = bio_alloc(GFP_KERNEL, block->vec_cnt);
++ atomic_inc(&lc->io_blocks);
++ bio = bio_alloc(GFP_KERNEL, min(block->vec_cnt, BIO_MAX_PAGES));
+ if (!bio) {
+ DMERR("Couldn't alloc log bio");
+ goto error;
+ }
+- atomic_inc(&lc->io_blocks);
+ bio->bi_iter.bi_size = 0;
+ bio->bi_iter.bi_sector = sector;
+ bio->bi_bdev = lc->logdev->bdev;
+@@ -282,7 +282,7 @@ static int log_one_block(struct log_writes_c *lc,
+ if (ret != block->vecs[i].bv_len) {
+ atomic_inc(&lc->io_blocks);
+ submit_bio(WRITE, bio);
+- bio = bio_alloc(GFP_KERNEL, block->vec_cnt - i);
++ bio = bio_alloc(GFP_KERNEL, min(block->vec_cnt - i, BIO_MAX_PAGES));
+ if (!bio) {
+ DMERR("Couldn't alloc log bio");
+ goto error;
+@@ -456,7 +456,7 @@ static int log_writes_ctr(struct dm_target *ti, unsigned int argc, char **argv)
+ }
+
+ lc->log_kthread = kthread_run(log_writes_kthread, lc, "log-write");
+- if (!lc->log_kthread) {
++ if (IS_ERR(lc->log_kthread)) {
+ ti->error = "Couldn't alloc kthread";
+ dm_put_device(ti, lc->dev);
+ dm_put_device(ti, lc->logdev);
+diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c
+index 80d613c0fbc6..6fd2c17125fc 100644
+--- a/drivers/staging/comedi/drivers/comedi_test.c
++++ b/drivers/staging/comedi/drivers/comedi_test.c
+@@ -55,10 +55,6 @@ zero volts).
+
+ #define N_CHANS 8
+
+-enum waveform_state_bits {
+- WAVEFORM_AI_RUNNING = 0
+-};
+-
+ /* Data unique to this driver */
+ struct waveform_private {
+ struct timer_list timer;
+@@ -67,7 +63,6 @@ struct waveform_private {
+ unsigned long usec_period; /* waveform period in microseconds */
+ unsigned long usec_current; /* current time (mod waveform period) */
+ unsigned long usec_remainder; /* usec since last scan */
+- unsigned long state_bits;
+ unsigned int scan_period; /* scan period in usec */
+ unsigned int convert_period; /* conversion period in usec */
+ unsigned int ao_loopbacks[N_CHANS];
+@@ -177,10 +172,6 @@ static void waveform_ai_interrupt(unsigned long arg)
+ unsigned int num_scans;
+ ktime_t now;
+
+- /* check command is still active */
+- if (!test_bit(WAVEFORM_AI_RUNNING, &devpriv->state_bits))
+- return;
+-
+ now = ktime_get();
+
+ elapsed_time = ktime_to_us(ktime_sub(now, devpriv->last));
+@@ -322,10 +313,6 @@ static int waveform_ai_cmd(struct comedi_device *dev,
+ devpriv->usec_remainder = 0;
+
+ devpriv->timer.expires = jiffies + 1;
+- /* mark command as active */
+- smp_mb__before_atomic();
+- set_bit(WAVEFORM_AI_RUNNING, &devpriv->state_bits);
+- smp_mb__after_atomic();
+ add_timer(&devpriv->timer);
+ return 0;
+ }
+@@ -335,11 +322,12 @@ static int waveform_ai_cancel(struct comedi_device *dev,
+ {
+ struct waveform_private *devpriv = dev->private;
+
+- /* mark command as no longer active */
+- clear_bit(WAVEFORM_AI_RUNNING, &devpriv->state_bits);
+- smp_mb__after_atomic();
+- /* cannot call del_timer_sync() as may be called from timer routine */
+- del_timer(&devpriv->timer);
++ if (in_softirq()) {
++ /* Assume we were called from the timer routine itself. */
++ del_timer(&devpriv->timer);
++ } else {
++ del_timer_sync(&devpriv->timer);
++ }
+ return 0;
+ }
+
+diff --git a/drivers/staging/comedi/drivers/daqboard2000.c b/drivers/staging/comedi/drivers/daqboard2000.c
+index f97d18d92255..63c338223548 100644
+--- a/drivers/staging/comedi/drivers/daqboard2000.c
++++ b/drivers/staging/comedi/drivers/daqboard2000.c
+@@ -636,7 +636,7 @@ static const void *daqboard2000_find_boardinfo(struct comedi_device *dev,
+ const struct daq200_boardtype *board;
+ int i;
+
+- if (pcidev->subsystem_device != PCI_VENDOR_ID_IOTECH)
++ if (pcidev->subsystem_vendor != PCI_VENDOR_ID_IOTECH)
+ return NULL;
+
+ for (i = 0; i < ARRAY_SIZE(boardtypes); i++) {
+diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
+index 34b3a522668f..4b8da862cd7e 100644
+--- a/drivers/staging/comedi/drivers/ni_mio_common.c
++++ b/drivers/staging/comedi/drivers/ni_mio_common.c
+@@ -2987,7 +2987,15 @@ static int ni_ao_inttrig(struct comedi_device *dev,
+ int i;
+ static const int timeout = 1000;
+
+- if (trig_num != cmd->start_arg)
++ /*
++ * Require trig_num == cmd->start_arg when cmd->start_src == TRIG_INT.
++ * For backwards compatibility, also allow trig_num == 0 when
++ * cmd->start_src != TRIG_INT (i.e. when cmd->start_src == TRIG_EXT);
++ * in that case, the internal trigger is being used as a pre-trigger
++ * before the external trigger.
++ */
++ if (!(trig_num == cmd->start_arg ||
++ (trig_num == 0 && cmd->start_src != TRIG_INT)))
+ return -EINVAL;
+
+ /* Null trig at beginning prevent ao start trigger from executing more than
+@@ -5635,7 +5643,7 @@ static int ni_E_init(struct comedi_device *dev,
+ s->maxdata = (devpriv->is_m_series) ? 0xffffffff
+ : 0x00ffffff;
+ s->insn_read = ni_tio_insn_read;
+- s->insn_write = ni_tio_insn_read;
++ s->insn_write = ni_tio_insn_write;
+ s->insn_config = ni_tio_insn_config;
+ #ifdef PCIDMA
+ if (dev->irq && devpriv->mite) {
+diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
+index a78a62bf0c96..6057a8a2d57d 100644
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -2016,6 +2016,43 @@ pci_wch_ch38x_setup(struct serial_private *priv,
+ #define PCI_DEVICE_ID_PERICOM_PI7C9X7954 0x7954
+ #define PCI_DEVICE_ID_PERICOM_PI7C9X7958 0x7958
+
++#define PCI_VENDOR_ID_ACCESIO 0x494f
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SDB 0x1051
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2S 0x1053
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB 0x105C
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S 0x105E
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_2DB 0x1091
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_2 0x1093
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB 0x1099
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4 0x109B
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SMDB 0x10D1
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2SM 0x10D3
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB 0x10DA
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM 0x10DC
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_1 0x1108
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_2 0x1110
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_2 0x1111
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4 0x1118
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4 0x1119
++#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2S 0x1152
++#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S 0x115A
++#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_2 0x1190
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_2 0x1191
++#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4 0x1198
++#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4 0x1199
++#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2SM 0x11D0
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4 0x105A
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4 0x105B
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM422_8 0x106A
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM485_8 0x106B
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4 0x1098
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_8 0x10A9
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM 0x10D9
++#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_8SM 0x10E9
++#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM 0x11D8
++
++
++
+ /* Unknown vendors/cards - this should not be in linux/pci_ids.h */
+ #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
+ #define PCI_SUBDEVICE_ID_UNKNOWN_0x1588 0x1588
+@@ -5217,6 +5254,108 @@ static struct pci_device_id serial_pci_tbl[] = {
+ 0,
+ 0, pbn_pericom_PI7C9X7958 },
+ /*
++ * ACCES I/O Products quad
++ */
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SDB,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2S,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_2DB,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_2,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SMDB,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2SM,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_1,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_2,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_2,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2S,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_2,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_2,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2SM,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM422_8,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM485_8,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_8,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_8SM,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM,
++ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
++ pbn_pericom_PI7C9X7958 },
++ /*
+ * Topic TP560 Data/Fax/Voice 56k modem (reported by Evan Clarke)
+ */
+ { PCI_VENDOR_ID_TOPIC, PCI_DEVICE_ID_TOPIC_TP560,
+diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
+index 92937c14f818..d93e43cfb6f8 100644
+--- a/drivers/usb/chipidea/udc.c
++++ b/drivers/usb/chipidea/udc.c
+@@ -1578,8 +1578,11 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on)
+ {
+ struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
+
+- /* Data+ pullup controlled by OTG state machine in OTG fsm mode */
+- if (ci_otg_is_fsm_mode(ci))
++ /*
++ * Data+ pullup controlled by OTG state machine in OTG fsm mode;
++ * and don't touch Data+ in host mode for dual role config.
++ */
++ if (ci_otg_is_fsm_mode(ci) || ci->role == CI_ROLE_HOST)
+ return 0;
+
+ pm_runtime_get_sync(&ci->gadget.dev);
+diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
+index 986abde07683..3d46b0bae75c 100644
+--- a/drivers/usb/core/devio.c
++++ b/drivers/usb/core/devio.c
+@@ -1526,11 +1526,17 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
+ as->urb->start_frame = uurb->start_frame;
+ as->urb->number_of_packets = number_of_packets;
+ as->urb->stream_id = stream_id;
+- if (uurb->type == USBDEVFS_URB_TYPE_ISO ||
+- ps->dev->speed == USB_SPEED_HIGH)
+- as->urb->interval = 1 << min(15, ep->desc.bInterval - 1);
+- else
+- as->urb->interval = ep->desc.bInterval;
++
++ if (ep->desc.bInterval) {
++ if (uurb->type == USBDEVFS_URB_TYPE_ISO ||
++ ps->dev->speed == USB_SPEED_HIGH ||
++ ps->dev->speed >= USB_SPEED_SUPER)
++ as->urb->interval = 1 <<
++ min(15, ep->desc.bInterval - 1);
++ else
++ as->urb->interval = ep->desc.bInterval;
++ }
++
+ as->urb->context = as;
+ as->urb->complete = async_completed;
+ for (totlen = u = 0; u < number_of_packets; u++) {
+diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
+index 4f70df33975a..9a0c610d85a9 100644
+--- a/drivers/usb/serial/mos7720.c
++++ b/drivers/usb/serial/mos7720.c
+@@ -1239,7 +1239,7 @@ static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port,
+
+ if (urb->transfer_buffer == NULL) {
+ urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE,
+- GFP_KERNEL);
++ GFP_ATOMIC);
+ if (!urb->transfer_buffer)
+ goto exit;
+ }
+diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
+index e4473a9109cf..f5ab4cd9e7a1 100644
+--- a/drivers/usb/serial/mos7840.c
++++ b/drivers/usb/serial/mos7840.c
+@@ -1340,8 +1340,8 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port,
+ }
+
+ if (urb->transfer_buffer == NULL) {
+- urb->transfer_buffer =
+- kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
++ urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE,
++ GFP_ATOMIC);
+ if (!urb->transfer_buffer)
+ goto exit;
+ }
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index ca03fbfa2a32..a599e8a841b0 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -528,6 +528,12 @@ static void option_instat_callback(struct urb *urb);
+ #define VIATELECOM_VENDOR_ID 0x15eb
+ #define VIATELECOM_PRODUCT_CDS7 0x0001
+
++/* WeTelecom products */
++#define WETELECOM_VENDOR_ID 0x22de
++#define WETELECOM_PRODUCT_WMD200 0x6801
++#define WETELECOM_PRODUCT_6802 0x6802
++#define WETELECOM_PRODUCT_WMD300 0x6803
++
+ struct option_blacklist_info {
+ /* bitmask of interface numbers blacklisted for send_setup */
+ const unsigned long sendsetup;
+@@ -2003,6 +2009,9 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) }, /* OLICARD300 - MT6225 */
+ { USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) },
+ { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) },
++ { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD200, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_6802, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD300, 0xff, 0xff, 0xff) },
+ { } /* Terminating entry */
+ };
+ MODULE_DEVICE_TABLE(usb, option_ids);
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index f01dd19adb7b..afb3eb3e8b0f 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -2082,6 +2082,7 @@ void ext4_group_desc_csum_set(struct super_block *sb, __u32 block_group,
+
+ /* Called at mount-time, super-block is locked */
+ static int ext4_check_descriptors(struct super_block *sb,
++ ext4_fsblk_t sb_block,
+ ext4_group_t *first_not_zeroed)
+ {
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+@@ -2112,6 +2113,11 @@ static int ext4_check_descriptors(struct super_block *sb,
+ grp = i;
+
+ block_bitmap = ext4_block_bitmap(sb, gdp);
++ if (block_bitmap == sb_block) {
++ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
++ "Block bitmap for group %u overlaps "
++ "superblock", i);
++ }
+ if (block_bitmap < first_block || block_bitmap > last_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Block bitmap for group %u not in group "
+@@ -2119,6 +2125,11 @@ static int ext4_check_descriptors(struct super_block *sb,
+ return 0;
+ }
+ inode_bitmap = ext4_inode_bitmap(sb, gdp);
++ if (inode_bitmap == sb_block) {
++ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
++ "Inode bitmap for group %u overlaps "
++ "superblock", i);
++ }
+ if (inode_bitmap < first_block || inode_bitmap > last_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Inode bitmap for group %u not in group "
+@@ -2126,6 +2137,11 @@ static int ext4_check_descriptors(struct super_block *sb,
+ return 0;
+ }
+ inode_table = ext4_inode_table(sb, gdp);
++ if (inode_table == sb_block) {
++ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
++ "Inode table for group %u overlaps "
++ "superblock", i);
++ }
+ if (inode_table < first_block ||
+ inode_table + sbi->s_itb_per_group - 1 > last_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+@@ -3989,7 +4005,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
+ goto failed_mount2;
+ }
+ }
+- if (!ext4_check_descriptors(sb, &first_not_zeroed)) {
++ if (!ext4_check_descriptors(sb, logical_sb_block, &first_not_zeroed)) {
+ ext4_msg(sb, KERN_ERR, "group descriptors corrupted!");
+ goto failed_mount2;
+ }
+diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
+index 2bacb9988566..9ff28bc294c0 100644
+--- a/fs/kernfs/file.c
++++ b/fs/kernfs/file.c
+@@ -834,21 +834,35 @@ repeat:
+ mutex_lock(&kernfs_mutex);
+
+ list_for_each_entry(info, &kernfs_root(kn)->supers, node) {
++ struct kernfs_node *parent;
+ struct inode *inode;
+- struct dentry *dentry;
+
++ /*
++ * We want fsnotify_modify() on @kn but as the
++ * modifications aren't originating from userland don't
++ * have the matching @file available. Look up the inodes
++ * and generate the events manually.
++ */
+ inode = ilookup(info->sb, kn->ino);
+ if (!inode)
+ continue;
+
+- dentry = d_find_any_alias(inode);
+- if (dentry) {
+- fsnotify_parent(NULL, dentry, FS_MODIFY);
+- fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE,
+- NULL, 0);
+- dput(dentry);
++ parent = kernfs_get_parent(kn);
++ if (parent) {
++ struct inode *p_inode;
++
++ p_inode = ilookup(info->sb, parent->ino);
++ if (p_inode) {
++ fsnotify(p_inode, FS_MODIFY | FS_EVENT_ON_CHILD,
++ inode, FSNOTIFY_EVENT_INODE, kn->name, 0);
++ iput(p_inode);
++ }
++
++ kernfs_put(parent);
+ }
+
++ fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE,
++ kn->name, 0);
+ iput(inode);
+ }
+
+diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
+index 8d129bb7355a..a78558a25035 100644
+--- a/fs/nfs/callback.c
++++ b/fs/nfs/callback.c
+@@ -303,6 +303,7 @@ static int nfs_callback_up_net(int minorversion, struct svc_serv *serv, struct n
+ err_socks:
+ svc_rpcb_cleanup(serv, net);
+ err_bind:
++ nn->cb_users[minorversion]--;
+ dprintk("NFS: Couldn't create callback socket: err = %d; "
+ "net = %p\n", ret, net);
+ return ret;
+diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
+index d47c188682b1..ea4fe630cdac 100644
+--- a/fs/nfs/pnfs.c
++++ b/fs/nfs/pnfs.c
+@@ -1472,6 +1472,7 @@ pnfs_update_layout(struct inode *ino,
+ goto out;
+
+ lookup_again:
++ nfs4_client_recover_expired_lease(clp);
+ first = false;
+ spin_lock(&ino->i_lock);
+ lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags);
+diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
+index 758012bfd5f0..4d8aa749d9b2 100644
+--- a/fs/overlayfs/copy_up.c
++++ b/fs/overlayfs/copy_up.c
+@@ -48,6 +48,8 @@ int ovl_copy_xattr(struct dentry *old, struct dentry *new)
+ }
+
+ for (name = buf; name < (buf + list_size); name += strlen(name) + 1) {
++ if (ovl_is_private_xattr(name))
++ continue;
+ retry:
+ size = vfs_getxattr(old, name, value, value_size);
+ if (size == -ERANGE)
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index 97fd65700ae2..0bb8347c0d8b 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -221,8 +221,7 @@ static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz)
+ return realinode->i_op->readlink(realpath.dentry, buf, bufsiz);
+ }
+
+-
+-static bool ovl_is_private_xattr(const char *name)
++bool ovl_is_private_xattr(const char *name)
+ {
+ return strncmp(name, OVL_XATTR_PRE_NAME, OVL_XATTR_PRE_LEN) == 0;
+ }
+@@ -280,7 +279,8 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)
+ struct path realpath;
+ enum ovl_path_type type = ovl_path_real(dentry, &realpath);
+ ssize_t res;
+- int off;
++ size_t len;
++ char *s;
+
+ res = vfs_listxattr(realpath.dentry, list, size);
+ if (res <= 0 || size == 0)
+@@ -290,17 +290,19 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)
+ return res;
+
+ /* filter out private xattrs */
+- for (off = 0; off < res;) {
+- char *s = list + off;
+- size_t slen = strlen(s) + 1;
++ for (s = list, len = res; len;) {
++ size_t slen = strnlen(s, len) + 1;
+
+- BUG_ON(off + slen > res);
++ /* underlying fs providing us with an broken xattr list? */
++ if (WARN_ON(slen > len))
++ return -EIO;
+
++ len -= slen;
+ if (ovl_is_private_xattr(s)) {
+ res -= slen;
+- memmove(s, s + slen, res - off);
++ memmove(s, s + slen, len);
+ } else {
+- off += slen;
++ s += slen;
+ }
+ }
+
+diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
+index 983540910ba8..32b077b07085 100644
+--- a/fs/overlayfs/overlayfs.h
++++ b/fs/overlayfs/overlayfs.h
+@@ -174,6 +174,7 @@ ssize_t ovl_getxattr(struct dentry *dentry, const char *name,
+ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size);
+ int ovl_removexattr(struct dentry *dentry, const char *name);
+ struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags);
++bool ovl_is_private_xattr(const char *name);
+
+ struct inode *ovl_new_inode(struct super_block *sb, umode_t mode,
+ struct ovl_entry *oe);
+diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
+index 39266655d2bd..c9b740111526 100644
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -658,6 +658,10 @@ retry:
+ struct kstat stat = {
+ .mode = S_IFDIR | 0,
+ };
++ struct iattr attr = {
++ .ia_valid = ATTR_MODE,
++ .ia_mode = stat.mode,
++ };
+
+ if (work->d_inode) {
+ err = -EEXIST;
+@@ -673,6 +677,21 @@ retry:
+ err = ovl_create_real(dir, work, &stat, NULL, NULL, true);
+ if (err)
+ goto out_dput;
++
++ err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT);
++ if (err && err != -ENODATA)
++ goto out_dput;
++
++ err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_ACCESS);
++ if (err && err != -ENODATA)
++ goto out_dput;
++
++ /* Clear any inherited mode bits */
++ mutex_lock(&work->d_inode->i_mutex);
++ err = notify_change(work, &attr, NULL);
++ mutex_unlock(&work->d_inode->i_mutex);
++ if (err)
++ goto out_dput;
+ }
+ out_unlock:
+ mutex_unlock(&dir->i_mutex);
+diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
+index 7c2867b44141..167f80e8f08d 100644
+--- a/fs/sysfs/file.c
++++ b/fs/sysfs/file.c
+@@ -108,14 +108,22 @@ static ssize_t sysfs_kf_read(struct kernfs_open_file *of, char *buf,
+ {
+ const struct sysfs_ops *ops = sysfs_file_ops(of->kn);
+ struct kobject *kobj = of->kn->parent->priv;
++ size_t len;
+
+ /*
+ * If buf != of->prealloc_buf, we don't know how
+ * large it is, so cannot safely pass it to ->show
+ */
+- if (pos || WARN_ON_ONCE(buf != of->prealloc_buf))
++ if (WARN_ON_ONCE(buf != of->prealloc_buf))
+ return 0;
+- return ops->show(kobj, of->kn->priv, buf);
++ len = ops->show(kobj, of->kn->priv, buf);
++ if (pos) {
++ if (len <= pos)
++ return 0;
++ len -= pos;
++ memmove(buf, buf + pos, len);
++ }
++ return min(count, len);
+ }
+
+ /* kernfs write callback for regular sysfs files */
+diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
+index 535bd843f2f4..901f11b30174 100644
+--- a/fs/xfs/libxfs/xfs_sb.c
++++ b/fs/xfs/libxfs/xfs_sb.c
+@@ -539,7 +539,8 @@ xfs_sb_verify(
+ * Only check the in progress field for the primary superblock as
+ * mkfs.xfs doesn't clear it from secondary superblocks.
+ */
+- return xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR,
++ return xfs_mount_validate_sb(mp, &sb,
++ bp->b_maps[0].bm_bn == XFS_SB_DADDR,
+ check_version);
+ }
+
+diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
+index 7dd64bf98c56..6e2b892b58ee 100644
+--- a/fs/xfs/xfs_buf.c
++++ b/fs/xfs/xfs_buf.c
+@@ -1537,7 +1537,7 @@ xfs_wait_buftarg(
+ * ensure here that all reference counts have been dropped before we
+ * start walking the LRU list.
+ */
+- drain_workqueue(btp->bt_mount->m_buf_workqueue);
++ flush_workqueue(btp->bt_mount->m_buf_workqueue);
+
+ /* loop until there is nothing left on the lru list. */
+ while (list_lru_count(&btp->bt_lru)) {
+diff --git a/kernel/cpuset.c b/kernel/cpuset.c
+index f0acff0f66c9..388fc6f78c6f 100644
+--- a/kernel/cpuset.c
++++ b/kernel/cpuset.c
+@@ -2042,6 +2042,20 @@ static void cpuset_bind(struct cgroup_subsys_state *root_css)
+ mutex_unlock(&cpuset_mutex);
+ }
+
++/*
++ * Make sure the new task conform to the current state of its parent,
++ * which could have been changed by cpuset just after it inherits the
++ * state from the parent and before it sits on the cgroup's task list.
++ */
++void cpuset_fork(struct task_struct *task)
++{
++ if (task_css_is_root(task, cpuset_cgrp_id))
++ return;
++
++ set_cpus_allowed_ptr(task, ¤t->cpus_allowed);
++ task->mems_allowed = current->mems_allowed;
++}
++
+ struct cgroup_subsys cpuset_cgrp_subsys = {
+ .css_alloc = cpuset_css_alloc,
+ .css_online = cpuset_css_online,
+@@ -2051,6 +2065,7 @@ struct cgroup_subsys cpuset_cgrp_subsys = {
+ .cancel_attach = cpuset_cancel_attach,
+ .attach = cpuset_attach,
+ .bind = cpuset_bind,
++ .fork = cpuset_fork,
+ .legacy_cftypes = files,
+ .early_init = 1,
+ };
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-08-22 23:29 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-08-22 23:29 UTC (permalink / raw
To: gentoo-commits
commit: d944130d7f18157ffd062622fe16340d4f456677
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Aug 22 23:28:53 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Aug 22 23:28:53 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=d944130d
Linux patch 4.1.31
0000_README | 4 +
1030_linux-4.1.31.patch | 6882 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 6886 insertions(+)
diff --git a/0000_README b/0000_README
index f04d74d..0ce7ab6 100644
--- a/0000_README
+++ b/0000_README
@@ -163,6 +163,10 @@ Patch: 1029_linux-4.1.30.patch
From: http://www.kernel.org
Desc: Linux 4.1.30
+Patch: 1030_linux-4.1.31.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.31
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1030_linux-4.1.31.patch b/1030_linux-4.1.31.patch
new file mode 100644
index 0000000..c3197a6
--- /dev/null
+++ b/1030_linux-4.1.31.patch
@@ -0,0 +1,6882 @@
+diff --git a/.mailmap b/.mailmap
+index 6287004040e7..d4b4748bab36 100644
+--- a/.mailmap
++++ b/.mailmap
+@@ -80,6 +80,7 @@ Leonid I Ananiev <leonid.i.ananiev@intel.com>
+ Linas Vepstas <linas@austin.ibm.com>
+ Mark Brown <broonie@sirena.org.uk>
+ Matthieu CASTET <castet.matthieu@free.fr>
++Mauro Carvalho Chehab <mchehab@kernel.org> <maurochehab@gmail.com> <mchehab@infradead.org> <mchehab@redhat.com> <m.chehab@samsung.com> <mchehab@osg.samsung.com> <mchehab@s-opensource.com>
+ Mayuresh Janorkar <mayur@ti.com>
+ Michael Buesch <m@bues.ch>
+ Michel Dänzer <michel@tungstengraphics.com>
+diff --git a/CREDITS b/CREDITS
+index ec7e6c7fdd1b..a830a8622417 100644
+--- a/CREDITS
++++ b/CREDITS
+@@ -644,6 +644,7 @@ D: Configure, Menuconfig, xconfig
+
+ N: Mauro Carvalho Chehab
+ E: m.chehab@samsung.org
++E: mchehab@osg.samsung.com
+ E: mchehab@infradead.org
+ D: Media subsystem (V4L/DVB) drivers and core
+ D: EDAC drivers and EDAC 3.0 core rework
+diff --git a/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935 b/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935
+index 6708c5e264aa..33e96f740639 100644
+--- a/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935
++++ b/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935
+@@ -1,4 +1,4 @@
+-What /sys/bus/iio/devices/iio:deviceX/in_proximity_raw
++What /sys/bus/iio/devices/iio:deviceX/in_proximity_input
+ Date: March 2014
+ KernelVersion: 3.15
+ Contact: Matt Ranostay <mranostay@gmail.com>
+diff --git a/Documentation/module-signing.txt b/Documentation/module-signing.txt
+index c72702ec1ded..aacf1ce73b8a 100644
+--- a/Documentation/module-signing.txt
++++ b/Documentation/module-signing.txt
+@@ -239,3 +239,9 @@ Since the private key is used to sign modules, viruses and malware could use
+ the private key to sign modules and compromise the operating system. The
+ private key must be either destroyed or moved to a secure location and not kept
+ in the root node of the kernel source tree.
++
++If you use the same private key to sign modules for multiple kernel
++configurations, you must ensure that the module version information is
++sufficient to prevent loading a module into a different kernel. Either
++set CONFIG_MODVERSIONS=y or ensure that each configuration has a different
++kernel release string by changing EXTRAVERSION or CONFIG_LOCALVERSION.
+diff --git a/MAINTAINERS b/MAINTAINERS
+index a1d127a83a48..ecd0eb88f51a 100644
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -1913,7 +1913,8 @@ F: include/net/ax25.h
+ F: net/ax25/
+
+ AZ6007 DVB DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -2318,7 +2319,8 @@ F: Documentation/filesystems/btrfs.txt
+ F: fs/btrfs/
+
+ BTTV VIDEO4LINUX DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -2882,7 +2884,8 @@ F: drivers/media/common/cx2341x*
+ F: include/media/cx2341x*
+
+ CX88 VIDEO4LINUX DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -3614,7 +3617,8 @@ F: fs/ecryptfs/
+ EDAC-CORE
+ M: Doug Thompson <dougthompson@xmission.com>
+ M: Borislav Petkov <bp@alien8.de>
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-edac@vger.kernel.org
+ W: bluesmoke.sourceforge.net
+ T: git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git#for-next
+@@ -3665,7 +3669,8 @@ S: Maintained
+ F: drivers/edac/e7xxx_edac.c
+
+ EDAC-GHES
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-edac@vger.kernel.org
+ W: bluesmoke.sourceforge.net
+ S: Maintained
+@@ -3693,21 +3698,24 @@ S: Maintained
+ F: drivers/edac/i5000_edac.c
+
+ EDAC-I5400
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-edac@vger.kernel.org
+ W: bluesmoke.sourceforge.net
+ S: Maintained
+ F: drivers/edac/i5400_edac.c
+
+ EDAC-I7300
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-edac@vger.kernel.org
+ W: bluesmoke.sourceforge.net
+ S: Maintained
+ F: drivers/edac/i7300_edac.c
+
+ EDAC-I7CORE
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-edac@vger.kernel.org
+ W: bluesmoke.sourceforge.net
+ S: Maintained
+@@ -3750,7 +3758,8 @@ S: Maintained
+ F: drivers/edac/r82600_edac.c
+
+ EDAC-SBRIDGE
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-edac@vger.kernel.org
+ W: bluesmoke.sourceforge.net
+ S: Maintained
+@@ -3810,7 +3819,8 @@ S: Maintained
+ F: drivers/net/ethernet/ibm/ehea/
+
+ EM28XX VIDEO4LINUX DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -6345,7 +6355,8 @@ S: Maintained
+ F: drivers/media/radio/radio-maxiradio*
+
+ MEDIA INPUT INFRASTRUCTURE (V4L/DVB)
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ P: LinuxTV.org Project
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+@@ -8502,7 +8513,8 @@ S: Odd Fixes
+ F: drivers/media/i2c/saa6588*
+
+ SAA7134 VIDEO4LINUX DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -8947,7 +8959,8 @@ S: Maintained
+ F: drivers/media/radio/si4713/radio-usb-si4713.c
+
+ SIANO DVB DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -9695,7 +9708,8 @@ S: Maintained
+ F: drivers/media/i2c/tda9840*
+
+ TEA5761 TUNER DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -9703,7 +9717,8 @@ S: Odd fixes
+ F: drivers/media/tuners/tea5761.*
+
+ TEA5767 TUNER DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -10042,7 +10057,8 @@ F: include/linux/shmem_fs.h
+ F: mm/shmem.c
+
+ TM6000 VIDEO4LINUX DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+@@ -10900,7 +10916,8 @@ S: Maintained
+ F: arch/x86/vdso/
+
+ XC2028/3028 TUNER DRIVER
+-M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
++M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
+ L: linux-media@vger.kernel.org
+ W: http://linuxtv.org
+ T: git git://linuxtv.org/media_tree.git
+diff --git a/Makefile b/Makefile
+index 137679c0cc49..bea5ca2ca2b0 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 30
++SUBLEVEL = 31
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
+index 9615fe1701c6..09c549826c5f 100644
+--- a/arch/arc/include/asm/pgtable.h
++++ b/arch/arc/include/asm/pgtable.h
+@@ -96,7 +96,7 @@
+ #define ___DEF (_PAGE_PRESENT | _PAGE_DEF_CACHEABLE)
+
+ /* Set of bits not changed in pte_modify */
+-#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED)
++#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_SPECIAL)
+
+ /* More Abbrevaited helpers */
+ #define PAGE_U_NONE __pgprot(___DEF)
+diff --git a/arch/arm/boot/dts/sun4i-a10-a1000.dts b/arch/arm/boot/dts/sun4i-a10-a1000.dts
+index b67e5be618cf..28b6b0e46e63 100644
+--- a/arch/arm/boot/dts/sun4i-a10-a1000.dts
++++ b/arch/arm/boot/dts/sun4i-a10-a1000.dts
+@@ -178,6 +178,7 @@
+ regulator-name = "emac-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
++ startup-delay-us = <20000>;
+ enable-active-high;
+ gpio = <&pio 7 15 GPIO_ACTIVE_HIGH>;
+ };
+diff --git a/arch/arm/boot/dts/sun4i-a10-hackberry.dts b/arch/arm/boot/dts/sun4i-a10-hackberry.dts
+index d3f73ea25567..864acaa00c9e 100644
+--- a/arch/arm/boot/dts/sun4i-a10-hackberry.dts
++++ b/arch/arm/boot/dts/sun4i-a10-hackberry.dts
+@@ -159,6 +159,7 @@
+ regulator-name = "emac-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
++ startup-delay-us = <20000>;
+ enable-active-high;
+ gpio = <&pio 7 19 GPIO_ACTIVE_HIGH>;
+ };
+diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
+index d4264bb0a409..7cc281d94769 100644
+--- a/arch/arm64/include/asm/ptrace.h
++++ b/arch/arm64/include/asm/ptrace.h
+@@ -58,6 +58,7 @@
+ #define COMPAT_PSR_Z_BIT 0x40000000
+ #define COMPAT_PSR_N_BIT 0x80000000
+ #define COMPAT_PSR_IT_MASK 0x0600fc00 /* If-Then execution state mask */
++#define COMPAT_PSR_GE_MASK 0x000f0000
+
+ #ifdef CONFIG_CPU_BIG_ENDIAN
+ #define COMPAT_PSR_ENDSTATE COMPAT_PSR_E_BIT
+@@ -116,6 +117,8 @@ struct pt_regs {
+ };
+ u64 orig_x0;
+ u64 syscallno;
++ u64 orig_addr_limit;
++ u64 unused; // maintain 16 byte alignment
+ };
+
+ #define arch_has_single_step() (1)
+@@ -151,35 +154,9 @@ static inline unsigned long regs_return_value(struct pt_regs *regs)
+ return regs->regs[0];
+ }
+
+-/*
+- * Are the current registers suitable for user mode? (used to maintain
+- * security in signal handlers)
+- */
+-static inline int valid_user_regs(struct user_pt_regs *regs)
+-{
+- if (user_mode(regs) && (regs->pstate & PSR_I_BIT) == 0) {
+- regs->pstate &= ~(PSR_F_BIT | PSR_A_BIT);
+-
+- /* The T bit is reserved for AArch64 */
+- if (!(regs->pstate & PSR_MODE32_BIT))
+- regs->pstate &= ~COMPAT_PSR_T_BIT;
+-
+- return 1;
+- }
+-
+- /*
+- * Force PSR to something logical...
+- */
+- regs->pstate &= PSR_f | PSR_s | (PSR_x & ~PSR_A_BIT) | \
+- COMPAT_PSR_T_BIT | PSR_MODE32_BIT;
+-
+- if (!(regs->pstate & PSR_MODE32_BIT)) {
+- regs->pstate &= ~COMPAT_PSR_T_BIT;
+- regs->pstate |= PSR_MODE_EL0t;
+- }
+-
+- return 0;
+-}
++/* We must avoid circular header include via sched.h */
++struct task_struct;
++int valid_user_regs(struct user_pt_regs *regs, struct task_struct *task);
+
+ #define instruction_pointer(regs) ((unsigned long)(regs)->pc)
+
+diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c
+index da675cc5dfae..4106ac64f95e 100644
+--- a/arch/arm64/kernel/asm-offsets.c
++++ b/arch/arm64/kernel/asm-offsets.c
+@@ -58,6 +58,7 @@ int main(void)
+ DEFINE(S_PC, offsetof(struct pt_regs, pc));
+ DEFINE(S_ORIG_X0, offsetof(struct pt_regs, orig_x0));
+ DEFINE(S_SYSCALLNO, offsetof(struct pt_regs, syscallno));
++ DEFINE(S_ORIG_ADDR_LIMIT, offsetof(struct pt_regs, orig_addr_limit));
+ DEFINE(S_FRAME_SIZE, sizeof(struct pt_regs));
+ BLANK();
+ DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id));
+diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c
+index 0d1d675f2cce..00ced919fa5a 100644
+--- a/arch/arm64/kernel/debug-monitors.c
++++ b/arch/arm64/kernel/debug-monitors.c
+@@ -150,7 +150,6 @@ static int debug_monitors_init(void)
+ /* Clear the OS lock. */
+ on_each_cpu(clear_os_lock, NULL, 1);
+ isb();
+- local_dbg_enable();
+
+ /* Register hotplug handler. */
+ __register_cpu_notifier(&os_lock_nb);
+diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
+index bddd04d031db..05012cdb555f 100644
+--- a/arch/arm64/kernel/entry.S
++++ b/arch/arm64/kernel/entry.S
+@@ -27,6 +27,7 @@
+ #include <asm/cpufeature.h>
+ #include <asm/errno.h>
+ #include <asm/esr.h>
++#include <asm/memory.h>
+ #include <asm/thread_info.h>
+ #include <asm/unistd.h>
+
+@@ -93,7 +94,13 @@
+ disable_step_tsk x19, x20 // exceptions when scheduling.
+ .else
+ add x21, sp, #S_FRAME_SIZE
+- .endif
++ get_thread_info tsk
++ /* Save the task's original addr_limit and set USER_DS (TASK_SIZE_64) */
++ ldr x20, [tsk, #TI_ADDR_LIMIT]
++ str x20, [sp, #S_ORIG_ADDR_LIMIT]
++ mov x20, #TASK_SIZE_64
++ str x20, [tsk, #TI_ADDR_LIMIT]
++ .endif /* \el == 0 */
+ mrs x22, elr_el1
+ mrs x23, spsr_el1
+ stp lr, x21, [sp, #S_LR]
+@@ -117,6 +124,12 @@
+ .endm
+
+ .macro kernel_exit, el, ret = 0
++ .if \el != 0
++ /* Restore the task's original addr_limit. */
++ ldr x20, [sp, #S_ORIG_ADDR_LIMIT]
++ str x20, [tsk, #TI_ADDR_LIMIT]
++ .endif
++
+ ldp x21, x22, [sp, #S_PC] // load ELR, SPSR
+ .if \el == 0
+ ct_user_enter
+diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
+index 608ac6aa497b..7038b9a3b42c 100644
+--- a/arch/arm64/kernel/ptrace.c
++++ b/arch/arm64/kernel/ptrace.c
+@@ -39,6 +39,7 @@
+ #include <linux/elf.h>
+
+ #include <asm/compat.h>
++#include <asm/cpufeature.h>
+ #include <asm/debug-monitors.h>
+ #include <asm/pgtable.h>
+ #include <asm/syscall.h>
+@@ -500,7 +501,7 @@ static int gpr_set(struct task_struct *target, const struct user_regset *regset,
+ if (ret)
+ return ret;
+
+- if (!valid_user_regs(&newregs))
++ if (!valid_user_regs(&newregs, target))
+ return -EINVAL;
+
+ task_pt_regs(target)->user_regs = newregs;
+@@ -770,7 +771,7 @@ static int compat_gpr_set(struct task_struct *target,
+
+ }
+
+- if (valid_user_regs(&newregs.user_regs))
++ if (valid_user_regs(&newregs.user_regs, target))
+ *task_pt_regs(target) = newregs;
+ else
+ ret = -EINVAL;
+@@ -1182,3 +1183,79 @@ asmlinkage void syscall_trace_exit(struct pt_regs *regs)
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ tracehook_report_syscall(regs, PTRACE_SYSCALL_EXIT);
+ }
++
++/*
++ * Bits which are always architecturally RES0 per ARM DDI 0487A.h
++ * Userspace cannot use these until they have an architectural meaning.
++ * We also reserve IL for the kernel; SS is handled dynamically.
++ */
++#define SPSR_EL1_AARCH64_RES0_BITS \
++ (GENMASK_ULL(63,32) | GENMASK_ULL(27, 22) | GENMASK_ULL(20, 10) | \
++ GENMASK_ULL(5, 5))
++#define SPSR_EL1_AARCH32_RES0_BITS \
++ (GENMASK_ULL(63,32) | GENMASK_ULL(24, 22) | GENMASK_ULL(20,20))
++
++static int valid_compat_regs(struct user_pt_regs *regs)
++{
++ regs->pstate &= ~SPSR_EL1_AARCH32_RES0_BITS;
++
++ if (!system_supports_mixed_endian_el0()) {
++ if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
++ regs->pstate |= COMPAT_PSR_E_BIT;
++ else
++ regs->pstate &= ~COMPAT_PSR_E_BIT;
++ }
++
++ if (user_mode(regs) && (regs->pstate & PSR_MODE32_BIT) &&
++ (regs->pstate & COMPAT_PSR_A_BIT) == 0 &&
++ (regs->pstate & COMPAT_PSR_I_BIT) == 0 &&
++ (regs->pstate & COMPAT_PSR_F_BIT) == 0) {
++ return 1;
++ }
++
++ /*
++ * Force PSR to a valid 32-bit EL0t, preserving the same bits as
++ * arch/arm.
++ */
++ regs->pstate &= COMPAT_PSR_N_BIT | COMPAT_PSR_Z_BIT |
++ COMPAT_PSR_C_BIT | COMPAT_PSR_V_BIT |
++ COMPAT_PSR_Q_BIT | COMPAT_PSR_IT_MASK |
++ COMPAT_PSR_GE_MASK | COMPAT_PSR_E_BIT |
++ COMPAT_PSR_T_BIT;
++ regs->pstate |= PSR_MODE32_BIT;
++
++ return 0;
++}
++
++static int valid_native_regs(struct user_pt_regs *regs)
++{
++ regs->pstate &= ~SPSR_EL1_AARCH64_RES0_BITS;
++
++ if (user_mode(regs) && !(regs->pstate & PSR_MODE32_BIT) &&
++ (regs->pstate & PSR_D_BIT) == 0 &&
++ (regs->pstate & PSR_A_BIT) == 0 &&
++ (regs->pstate & PSR_I_BIT) == 0 &&
++ (regs->pstate & PSR_F_BIT) == 0) {
++ return 1;
++ }
++
++ /* Force PSR to a valid 64-bit EL0t */
++ regs->pstate &= PSR_N_BIT | PSR_Z_BIT | PSR_C_BIT | PSR_V_BIT;
++
++ return 0;
++}
++
++/*
++ * Are the current registers suitable for user mode? (used to maintain
++ * security in signal handlers)
++ */
++int valid_user_regs(struct user_pt_regs *regs, struct task_struct *task)
++{
++ if (!test_tsk_thread_flag(task, TIF_SINGLESTEP))
++ regs->pstate &= ~DBG_SPSR_SS;
++
++ if (is_compat_thread(task_thread_info(task)))
++ return valid_compat_regs(regs);
++ else
++ return valid_native_regs(regs);
++}
+diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
+index e18c48cb6db1..a8eafdbc7cb8 100644
+--- a/arch/arm64/kernel/signal.c
++++ b/arch/arm64/kernel/signal.c
+@@ -115,7 +115,7 @@ static int restore_sigframe(struct pt_regs *regs,
+ */
+ regs->syscallno = ~0UL;
+
+- err |= !valid_user_regs(®s->user_regs);
++ err |= !valid_user_regs(®s->user_regs, current);
+
+ if (err == 0) {
+ struct fpsimd_context *fpsimd_ctx =
+@@ -307,7 +307,7 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
+ /*
+ * Check that the resulting registers are actually sane.
+ */
+- ret |= !valid_user_regs(®s->user_regs);
++ ret |= !valid_user_regs(®s->user_regs, current);
+
+ /*
+ * Fast forward the stepping logic so we step into the signal
+diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
+index c58aee062590..bb3ba4aab30a 100644
+--- a/arch/arm64/kernel/signal32.c
++++ b/arch/arm64/kernel/signal32.c
+@@ -356,7 +356,7 @@ static int compat_restore_sigframe(struct pt_regs *regs,
+ */
+ regs->syscallno = ~0UL;
+
+- err |= !valid_user_regs(®s->user_regs);
++ err |= !valid_user_regs(®s->user_regs, current);
+
+ aux = (struct compat_aux_sigframe __user *) sf->uc.uc_regspace;
+ if (err == 0)
+diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
+index d3a202b85ba6..edf73a6e16a8 100644
+--- a/arch/arm64/kernel/smp.c
++++ b/arch/arm64/kernel/smp.c
+@@ -179,7 +179,6 @@ asmlinkage void secondary_start_kernel(void)
+ set_cpu_online(cpu, true);
+ complete(&cpu_running);
+
+- local_dbg_enable();
+ local_irq_enable();
+ local_async_enable();
+
+diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
+index d253908a988d..262c8ec55790 100644
+--- a/arch/arm64/mm/proc.S
++++ b/arch/arm64/mm/proc.S
+@@ -205,6 +205,8 @@ ENTRY(__cpu_setup)
+ msr cpacr_el1, x0 // Enable FP/ASIMD
+ mov x0, #1 << 12 // Reset mdscr_el1 and disable
+ msr mdscr_el1, x0 // access to the DCC from EL0
++ isb // Unmask debug exceptions now,
++ enable_dbg // since this is per-cpu
+ reset_pmuserenr_el0 x0 // Disable PMU access from EL0
+ /*
+ * Memory region attributes for LPAE:
+diff --git a/arch/metag/include/asm/cmpxchg_lnkget.h b/arch/metag/include/asm/cmpxchg_lnkget.h
+index 0154e2807ebb..2369ad394876 100644
+--- a/arch/metag/include/asm/cmpxchg_lnkget.h
++++ b/arch/metag/include/asm/cmpxchg_lnkget.h
+@@ -73,7 +73,7 @@ static inline unsigned long __cmpxchg_u32(volatile int *m, unsigned long old,
+ " DCACHE [%2], %0\n"
+ #endif
+ "2:\n"
+- : "=&d" (temp), "=&da" (retval)
++ : "=&d" (temp), "=&d" (retval)
+ : "da" (m), "bd" (old), "da" (new)
+ : "cc"
+ );
+diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c
+index e5ed7ada1433..3a317e1ede71 100644
+--- a/arch/mips/kernel/csrc-r4k.c
++++ b/arch/mips/kernel/csrc-r4k.c
+@@ -23,7 +23,7 @@ static struct clocksource clocksource_mips = {
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+ };
+
+-static u64 notrace r4k_read_sched_clock(void)
++static u64 __maybe_unused notrace r4k_read_sched_clock(void)
+ {
+ return read_c0_count();
+ }
+@@ -38,7 +38,9 @@ int __init init_r4k_clocksource(void)
+
+ clocksource_register_hz(&clocksource_mips, mips_hpt_frequency);
+
++#ifndef CONFIG_CPU_FREQ
+ sched_clock_register(r4k_read_sched_clock, 32, mips_hpt_frequency);
++#endif
+
+ return 0;
+ }
+diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
+index 4b2010654c46..97fa4c7b9a5e 100644
+--- a/arch/mips/kernel/scall64-n32.S
++++ b/arch/mips/kernel/scall64-n32.S
+@@ -353,7 +353,7 @@ EXPORT(sysn32_call_table)
+ PTR sys_ni_syscall /* available, was setaltroot */
+ PTR sys_add_key
+ PTR sys_request_key
+- PTR sys_keyctl /* 6245 */
++ PTR compat_sys_keyctl /* 6245 */
+ PTR sys_set_thread_area
+ PTR sys_inotify_init
+ PTR sys_inotify_add_watch
+diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
+index d07b210fbeff..80e39776e377 100644
+--- a/arch/mips/kernel/scall64-o32.S
++++ b/arch/mips/kernel/scall64-o32.S
+@@ -492,7 +492,7 @@ EXPORT(sys32_call_table)
+ PTR sys_ni_syscall /* available, was setaltroot */
+ PTR sys_add_key /* 4280 */
+ PTR sys_request_key
+- PTR sys_keyctl
++ PTR compat_sys_keyctl
+ PTR sys_set_thread_area
+ PTR sys_inotify_init
+ PTR sys_inotify_add_watch /* 4285 */
+diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
+index dc10c77b7500..d6476d11212e 100644
+--- a/arch/mips/kvm/emulate.c
++++ b/arch/mips/kvm/emulate.c
+@@ -1629,8 +1629,14 @@ enum emulation_result kvm_mips_emulate_cache(uint32_t inst, uint32_t *opc,
+
+ preempt_disable();
+ if (KVM_GUEST_KSEGX(va) == KVM_GUEST_KSEG0) {
+- if (kvm_mips_host_tlb_lookup(vcpu, va) < 0)
+- kvm_mips_handle_kseg0_tlb_fault(va, vcpu);
++ if (kvm_mips_host_tlb_lookup(vcpu, va) < 0 &&
++ kvm_mips_handle_kseg0_tlb_fault(va, vcpu)) {
++ kvm_err("%s: handling mapped kseg0 tlb fault for %lx, vcpu: %p, ASID: %#lx\n",
++ __func__, va, vcpu, read_c0_entryhi());
++ er = EMULATE_FAIL;
++ preempt_enable();
++ goto done;
++ }
+ } else if ((KVM_GUEST_KSEGX(va) < KVM_GUEST_KSEG0) ||
+ KVM_GUEST_KSEGX(va) == KVM_GUEST_KSEG23) {
+ int index;
+@@ -1665,14 +1671,19 @@ enum emulation_result kvm_mips_emulate_cache(uint32_t inst, uint32_t *opc,
+ run, vcpu);
+ preempt_enable();
+ goto dont_update_pc;
+- } else {
+- /*
+- * We fault an entry from the guest tlb to the
+- * shadow host TLB
+- */
+- kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb,
+- NULL,
+- NULL);
++ }
++ /*
++ * We fault an entry from the guest tlb to the
++ * shadow host TLB
++ */
++ if (kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb,
++ NULL, NULL)) {
++ kvm_err("%s: handling mapped seg tlb fault for %lx, index: %u, vcpu: %p, ASID: %#lx\n",
++ __func__, va, index, vcpu,
++ read_c0_entryhi());
++ er = EMULATE_FAIL;
++ preempt_enable();
++ goto done;
+ }
+ }
+ } else {
+@@ -2633,8 +2644,13 @@ enum emulation_result kvm_mips_handle_tlbmiss(unsigned long cause,
+ * OK we have a Guest TLB entry, now inject it into the
+ * shadow host TLB
+ */
+- kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb, NULL,
+- NULL);
++ if (kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb,
++ NULL, NULL)) {
++ kvm_err("%s: handling mapped seg tlb fault for %lx, index: %u, vcpu: %p, ASID: %#lx\n",
++ __func__, va, index, vcpu,
++ read_c0_entryhi());
++ er = EMULATE_FAIL;
++ }
+ }
+ }
+
+diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c
+index aed0ac2a4972..7a7ed9ca01bb 100644
+--- a/arch/mips/kvm/tlb.c
++++ b/arch/mips/kvm/tlb.c
+@@ -276,7 +276,7 @@ int kvm_mips_handle_kseg0_tlb_fault(unsigned long badvaddr,
+ }
+
+ gfn = (KVM_GUEST_CPHYSADDR(badvaddr) >> PAGE_SHIFT);
+- if (gfn >= kvm->arch.guest_pmap_npages) {
++ if ((gfn | 1) >= kvm->arch.guest_pmap_npages) {
+ kvm_err("%s: Invalid gfn: %#llx, BadVaddr: %#lx\n", __func__,
+ gfn, badvaddr);
+ kvm_mips_dump_host_tlbs();
+@@ -361,25 +361,39 @@ int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu,
+ unsigned long entryhi = 0, entrylo0 = 0, entrylo1 = 0;
+ struct kvm *kvm = vcpu->kvm;
+ pfn_t pfn0, pfn1;
+-
+- if ((tlb->tlb_hi & VPN2_MASK) == 0) {
+- pfn0 = 0;
+- pfn1 = 0;
+- } else {
+- if (kvm_mips_map_page(kvm, mips3_tlbpfn_to_paddr(tlb->tlb_lo0)
+- >> PAGE_SHIFT) < 0)
+- return -1;
+-
+- if (kvm_mips_map_page(kvm, mips3_tlbpfn_to_paddr(tlb->tlb_lo1)
+- >> PAGE_SHIFT) < 0)
+- return -1;
+-
+- pfn0 = kvm->arch.guest_pmap[mips3_tlbpfn_to_paddr(tlb->tlb_lo0)
+- >> PAGE_SHIFT];
+- pfn1 = kvm->arch.guest_pmap[mips3_tlbpfn_to_paddr(tlb->tlb_lo1)
+- >> PAGE_SHIFT];
++ gfn_t gfn0, gfn1;
++ long tlb_lo[2];
++
++ tlb_lo[0] = tlb->tlb_lo0;
++ tlb_lo[1] = tlb->tlb_lo1;
++
++ /*
++ * The commpage address must not be mapped to anything else if the guest
++ * TLB contains entries nearby, or commpage accesses will break.
++ */
++ if (!((tlb->tlb_hi ^ KVM_GUEST_COMMPAGE_ADDR) &
++ VPN2_MASK & (PAGE_MASK << 1)))
++ tlb_lo[(KVM_GUEST_COMMPAGE_ADDR >> PAGE_SHIFT) & 1] = 0;
++
++ gfn0 = mips3_tlbpfn_to_paddr(tlb_lo[0]) >> PAGE_SHIFT;
++ gfn1 = mips3_tlbpfn_to_paddr(tlb_lo[1]) >> PAGE_SHIFT;
++ if (gfn0 >= kvm->arch.guest_pmap_npages ||
++ gfn1 >= kvm->arch.guest_pmap_npages) {
++ kvm_err("%s: Invalid gfn: [%#llx, %#llx], EHi: %#lx\n",
++ __func__, gfn0, gfn1, tlb->tlb_hi);
++ kvm_mips_dump_guest_tlbs(vcpu);
++ return -1;
+ }
+
++ if (kvm_mips_map_page(kvm, gfn0) < 0)
++ return -1;
++
++ if (kvm_mips_map_page(kvm, gfn1) < 0)
++ return -1;
++
++ pfn0 = kvm->arch.guest_pmap[gfn0];
++ pfn1 = kvm->arch.guest_pmap[gfn1];
++
+ if (hpa0)
+ *hpa0 = pfn0 << PAGE_SHIFT;
+
+@@ -391,9 +405,9 @@ int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu,
+ kvm_mips_get_kernel_asid(vcpu) :
+ kvm_mips_get_user_asid(vcpu));
+ entrylo0 = mips3_paddr_to_tlbpfn(pfn0 << PAGE_SHIFT) | (0x3 << 3) |
+- (tlb->tlb_lo0 & MIPS3_PG_D) | (tlb->tlb_lo0 & MIPS3_PG_V);
++ (tlb_lo[0] & MIPS3_PG_D) | (tlb_lo[0] & MIPS3_PG_V);
+ entrylo1 = mips3_paddr_to_tlbpfn(pfn1 << PAGE_SHIFT) | (0x3 << 3) |
+- (tlb->tlb_lo1 & MIPS3_PG_D) | (tlb->tlb_lo1 & MIPS3_PG_V);
++ (tlb_lo[1] & MIPS3_PG_D) | (tlb_lo[1] & MIPS3_PG_V);
+
+ kvm_debug("@ %#lx tlb_lo0: 0x%08lx tlb_lo1: 0x%08lx\n", vcpu->arch.pc,
+ tlb->tlb_lo0, tlb->tlb_lo1);
+@@ -794,10 +808,16 @@ uint32_t kvm_get_inst(uint32_t *opc, struct kvm_vcpu *vcpu)
+ local_irq_restore(flags);
+ return KVM_INVALID_INST;
+ }
+- kvm_mips_handle_mapped_seg_tlb_fault(vcpu,
+- &vcpu->arch.
+- guest_tlb[index],
+- NULL, NULL);
++ if (kvm_mips_handle_mapped_seg_tlb_fault(vcpu,
++ &vcpu->arch.guest_tlb[index],
++ NULL, NULL)) {
++ kvm_err("%s: handling mapped seg tlb fault failed for %p, index: %u, vcpu: %p, ASID: %#lx\n",
++ __func__, opc, index, vcpu,
++ read_c0_entryhi());
++ kvm_mips_dump_guest_tlbs(vcpu);
++ local_irq_restore(flags);
++ return KVM_INVALID_INST;
++ }
+ inst = *(opc);
+ }
+ local_irq_restore(flags);
+diff --git a/arch/mips/mm/uasm-mips.c b/arch/mips/mm/uasm-mips.c
+index b4a837893562..5abe51cad899 100644
+--- a/arch/mips/mm/uasm-mips.c
++++ b/arch/mips/mm/uasm-mips.c
+@@ -65,7 +65,7 @@ static struct insn insn_table[] = {
+ #ifndef CONFIG_CPU_MIPSR6
+ { insn_cache, M(cache_op, 0, 0, 0, 0, 0), RS | RT | SIMM },
+ #else
+- { insn_cache, M6(cache_op, 0, 0, 0, cache6_op), RS | RT | SIMM9 },
++ { insn_cache, M6(spec3_op, 0, 0, 0, cache6_op), RS | RT | SIMM9 },
+ #endif
+ { insn_daddiu, M(daddiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM },
+ { insn_daddu, M(spec_op, 0, 0, 0, 0, daddu_op), RS | RT | RD },
+diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S
+index 5754b226da7e..521aef95e6b7 100644
+--- a/arch/powerpc/kernel/tm.S
++++ b/arch/powerpc/kernel/tm.S
+@@ -110,17 +110,11 @@ _GLOBAL(tm_reclaim)
+ std r3, STK_PARAM(R3)(r1)
+ SAVE_NVGPRS(r1)
+
+- /* We need to setup MSR for VSX register save instructions. Here we
+- * also clear the MSR RI since when we do the treclaim, we won't have a
+- * valid kernel pointer for a while. We clear RI here as it avoids
+- * adding another mtmsr closer to the treclaim. This makes the region
+- * maked as non-recoverable wider than it needs to be but it saves on
+- * inserting another mtmsrd later.
+- */
++ /* We need to setup MSR for VSX register save instructions. */
+ mfmsr r14
+ mr r15, r14
+ ori r15, r15, MSR_FP
+- li r16, MSR_RI
++ li r16, 0
+ ori r16, r16, MSR_EE /* IRQs hard off */
+ andc r15, r15, r16
+ oris r15, r15, MSR_VEC@h
+@@ -176,7 +170,17 @@ dont_backup_fp:
+ 1: tdeqi r6, 0
+ EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0
+
+- /* The moment we treclaim, ALL of our GPRs will switch
++ /* Clear MSR RI since we are about to change r1, EE is already off. */
++ li r4, 0
++ mtmsrd r4, 1
++
++ /*
++ * BE CAREFUL HERE:
++ * At this point we can't take an SLB miss since we have MSR_RI
++ * off. Load only to/from the stack/paca which are in SLB bolted regions
++ * until we turn MSR RI back on.
++ *
++ * The moment we treclaim, ALL of our GPRs will switch
+ * to user register state. (FPRs, CCR etc. also!)
+ * Use an sprg and a tm_scratch in the PACA to shuffle.
+ */
+@@ -197,6 +201,11 @@ dont_backup_fp:
+
+ /* Store the PPR in r11 and reset to decent value */
+ std r11, GPR11(r1) /* Temporary stash */
++
++ /* Reset MSR RI so we can take SLB faults again */
++ li r11, MSR_RI
++ mtmsrd r11, 1
++
+ mfspr r11, SPRN_PPR
+ HMT_MEDIUM
+
+@@ -329,8 +338,6 @@ _GLOBAL(__tm_recheckpoint)
+ */
+ subi r7, r7, STACK_FRAME_OVERHEAD
+
+- SET_SCRATCH0(r1)
+-
+ mfmsr r6
+ /* R4 = original MSR to indicate whether thread used FP/Vector etc. */
+
+@@ -397,11 +404,6 @@ restore_gprs:
+ ld r5, THREAD_TM_DSCR(r3)
+ ld r6, THREAD_TM_PPR(r3)
+
+- /* Clear the MSR RI since we are about to change R1. EE is already off
+- */
+- li r4, 0
+- mtmsrd r4, 1
+-
+ REST_GPR(0, r7) /* GPR0 */
+ REST_2GPRS(2, r7) /* GPR2-3 */
+ REST_GPR(4, r7) /* GPR4 */
+@@ -439,10 +441,34 @@ restore_gprs:
+ ld r6, _CCR(r7)
+ mtcr r6
+
+- REST_GPR(1, r7) /* GPR1 */
+- REST_GPR(5, r7) /* GPR5-7 */
+ REST_GPR(6, r7)
+- ld r7, GPR7(r7)
++
++ /*
++ * Store r1 and r5 on the stack so that we can access them
++ * after we clear MSR RI.
++ */
++
++ REST_GPR(5, r7)
++ std r5, -8(r1)
++ ld r5, GPR1(r7)
++ std r5, -16(r1)
++
++ REST_GPR(7, r7)
++
++ /* Clear MSR RI since we are about to change r1. EE is already off */
++ li r5, 0
++ mtmsrd r5, 1
++
++ /*
++ * BE CAREFUL HERE:
++ * At this point we can't take an SLB miss since we have MSR_RI
++ * off. Load only to/from the stack/paca which are in SLB bolted regions
++ * until we turn MSR RI back on.
++ */
++
++ SET_SCRATCH0(r1)
++ ld r5, -8(r1)
++ ld r1, -16(r1)
+
+ /* Commit register state as checkpointed state: */
+ TRECHKPT
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index a34e43eec658..11d82b91aa4f 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -570,112 +570,8 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
+
+ #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ BEGIN_FTR_SECTION
+- b skip_tm
+-END_FTR_SECTION_IFCLR(CPU_FTR_TM)
+-
+- /* Turn on TM/FP/VSX/VMX so we can restore them. */
+- mfmsr r5
+- li r6, MSR_TM >> 32
+- sldi r6, r6, 32
+- or r5, r5, r6
+- ori r5, r5, MSR_FP
+- oris r5, r5, (MSR_VEC | MSR_VSX)@h
+- mtmsrd r5
+-
+- /*
+- * The user may change these outside of a transaction, so they must
+- * always be context switched.
+- */
+- ld r5, VCPU_TFHAR(r4)
+- ld r6, VCPU_TFIAR(r4)
+- ld r7, VCPU_TEXASR(r4)
+- mtspr SPRN_TFHAR, r5
+- mtspr SPRN_TFIAR, r6
+- mtspr SPRN_TEXASR, r7
+-
+- ld r5, VCPU_MSR(r4)
+- rldicl. r5, r5, 64 - MSR_TS_S_LG, 62
+- beq skip_tm /* TM not active in guest */
+-
+- /* Make sure the failure summary is set, otherwise we'll program check
+- * when we trechkpt. It's possible that this might have been not set
+- * on a kvmppc_set_one_reg() call but we shouldn't let this crash the
+- * host.
+- */
+- oris r7, r7, (TEXASR_FS)@h
+- mtspr SPRN_TEXASR, r7
+-
+- /*
+- * We need to load up the checkpointed state for the guest.
+- * We need to do this early as it will blow away any GPRs, VSRs and
+- * some SPRs.
+- */
+-
+- mr r31, r4
+- addi r3, r31, VCPU_FPRS_TM
+- bl load_fp_state
+- addi r3, r31, VCPU_VRS_TM
+- bl load_vr_state
+- mr r4, r31
+- lwz r7, VCPU_VRSAVE_TM(r4)
+- mtspr SPRN_VRSAVE, r7
+-
+- ld r5, VCPU_LR_TM(r4)
+- lwz r6, VCPU_CR_TM(r4)
+- ld r7, VCPU_CTR_TM(r4)
+- ld r8, VCPU_AMR_TM(r4)
+- ld r9, VCPU_TAR_TM(r4)
+- mtlr r5
+- mtcr r6
+- mtctr r7
+- mtspr SPRN_AMR, r8
+- mtspr SPRN_TAR, r9
+-
+- /*
+- * Load up PPR and DSCR values but don't put them in the actual SPRs
+- * till the last moment to avoid running with userspace PPR and DSCR for
+- * too long.
+- */
+- ld r29, VCPU_DSCR_TM(r4)
+- ld r30, VCPU_PPR_TM(r4)
+-
+- std r2, PACATMSCRATCH(r13) /* Save TOC */
+-
+- /* Clear the MSR RI since r1, r13 are all going to be foobar. */
+- li r5, 0
+- mtmsrd r5, 1
+-
+- /* Load GPRs r0-r28 */
+- reg = 0
+- .rept 29
+- ld reg, VCPU_GPRS_TM(reg)(r31)
+- reg = reg + 1
+- .endr
+-
+- mtspr SPRN_DSCR, r29
+- mtspr SPRN_PPR, r30
+-
+- /* Load final GPRs */
+- ld 29, VCPU_GPRS_TM(29)(r31)
+- ld 30, VCPU_GPRS_TM(30)(r31)
+- ld 31, VCPU_GPRS_TM(31)(r31)
+-
+- /* TM checkpointed state is now setup. All GPRs are now volatile. */
+- TRECHKPT
+-
+- /* Now let's get back the state we need. */
+- HMT_MEDIUM
+- GET_PACA(r13)
+- ld r29, HSTATE_DSCR(r13)
+- mtspr SPRN_DSCR, r29
+- ld r4, HSTATE_KVM_VCPU(r13)
+- ld r1, HSTATE_HOST_R1(r13)
+- ld r2, PACATMSCRATCH(r13)
+-
+- /* Set the MSR RI since we have our registers back. */
+- li r5, MSR_RI
+- mtmsrd r5, 1
+-skip_tm:
++ bl kvmppc_restore_tm
++END_FTR_SECTION_IFSET(CPU_FTR_TM)
+ #endif
+
+ /* Load guest PMU registers */
+@@ -756,12 +652,6 @@ BEGIN_FTR_SECTION
+ /* Skip next section on POWER7 */
+ b 8f
+ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
+- /* Turn on TM so we can access TFHAR/TFIAR/TEXASR */
+- mfmsr r8
+- li r0, 1
+- rldimi r8, r0, MSR_TM_LG, 63-MSR_TM_LG
+- mtmsrd r8
+-
+ /* Load up POWER8-specific registers */
+ ld r5, VCPU_IAMR(r4)
+ lwz r6, VCPU_PSPB(r4)
+@@ -1339,106 +1229,8 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
+
+ #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ BEGIN_FTR_SECTION
+- b 2f
+-END_FTR_SECTION_IFCLR(CPU_FTR_TM)
+- /* Turn on TM. */
+- mfmsr r8
+- li r0, 1
+- rldimi r8, r0, MSR_TM_LG, 63-MSR_TM_LG
+- mtmsrd r8
+-
+- ld r5, VCPU_MSR(r9)
+- rldicl. r5, r5, 64 - MSR_TS_S_LG, 62
+- beq 1f /* TM not active in guest. */
+-
+- li r3, TM_CAUSE_KVM_RESCHED
+-
+- /* Clear the MSR RI since r1, r13 are all going to be foobar. */
+- li r5, 0
+- mtmsrd r5, 1
+-
+- /* All GPRs are volatile at this point. */
+- TRECLAIM(R3)
+-
+- /* Temporarily store r13 and r9 so we have some regs to play with */
+- SET_SCRATCH0(r13)
+- GET_PACA(r13)
+- std r9, PACATMSCRATCH(r13)
+- ld r9, HSTATE_KVM_VCPU(r13)
+-
+- /* Get a few more GPRs free. */
+- std r29, VCPU_GPRS_TM(29)(r9)
+- std r30, VCPU_GPRS_TM(30)(r9)
+- std r31, VCPU_GPRS_TM(31)(r9)
+-
+- /* Save away PPR and DSCR soon so don't run with user values. */
+- mfspr r31, SPRN_PPR
+- HMT_MEDIUM
+- mfspr r30, SPRN_DSCR
+- ld r29, HSTATE_DSCR(r13)
+- mtspr SPRN_DSCR, r29
+-
+- /* Save all but r9, r13 & r29-r31 */
+- reg = 0
+- .rept 29
+- .if (reg != 9) && (reg != 13)
+- std reg, VCPU_GPRS_TM(reg)(r9)
+- .endif
+- reg = reg + 1
+- .endr
+- /* ... now save r13 */
+- GET_SCRATCH0(r4)
+- std r4, VCPU_GPRS_TM(13)(r9)
+- /* ... and save r9 */
+- ld r4, PACATMSCRATCH(r13)
+- std r4, VCPU_GPRS_TM(9)(r9)
+-
+- /* Reload stack pointer and TOC. */
+- ld r1, HSTATE_HOST_R1(r13)
+- ld r2, PACATOC(r13)
+-
+- /* Set MSR RI now we have r1 and r13 back. */
+- li r5, MSR_RI
+- mtmsrd r5, 1
+-
+- /* Save away checkpinted SPRs. */
+- std r31, VCPU_PPR_TM(r9)
+- std r30, VCPU_DSCR_TM(r9)
+- mflr r5
+- mfcr r6
+- mfctr r7
+- mfspr r8, SPRN_AMR
+- mfspr r10, SPRN_TAR
+- std r5, VCPU_LR_TM(r9)
+- stw r6, VCPU_CR_TM(r9)
+- std r7, VCPU_CTR_TM(r9)
+- std r8, VCPU_AMR_TM(r9)
+- std r10, VCPU_TAR_TM(r9)
+-
+- /* Restore r12 as trap number. */
+- lwz r12, VCPU_TRAP(r9)
+-
+- /* Save FP/VSX. */
+- addi r3, r9, VCPU_FPRS_TM
+- bl store_fp_state
+- addi r3, r9, VCPU_VRS_TM
+- bl store_vr_state
+- mfspr r6, SPRN_VRSAVE
+- stw r6, VCPU_VRSAVE_TM(r9)
+-1:
+- /*
+- * We need to save these SPRs after the treclaim so that the software
+- * error code is recorded correctly in the TEXASR. Also the user may
+- * change these outside of a transaction, so they must always be
+- * context switched.
+- */
+- mfspr r5, SPRN_TFHAR
+- mfspr r6, SPRN_TFIAR
+- mfspr r7, SPRN_TEXASR
+- std r5, VCPU_TFHAR(r9)
+- std r6, VCPU_TFIAR(r9)
+- std r7, VCPU_TEXASR(r9)
+-2:
++ bl kvmppc_save_tm
++END_FTR_SECTION_IFSET(CPU_FTR_TM)
+ #endif
+
+ /* Increment yield count if they have a VPA */
+@@ -2139,6 +1931,13 @@ _GLOBAL(kvmppc_h_cede) /* r3 = vcpu pointer, r11 = msr, r13 = paca */
+ /* save FP state */
+ bl kvmppc_save_fp
+
++#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
++BEGIN_FTR_SECTION
++ ld r9, HSTATE_KVM_VCPU(r13)
++ bl kvmppc_save_tm
++END_FTR_SECTION_IFSET(CPU_FTR_TM)
++#endif
++
+ /*
+ * Set DEC to the smaller of DEC and HDEC, so that we wake
+ * no later than the end of our timeslice (HDEC interrupts
+@@ -2215,6 +2014,12 @@ kvm_end_cede:
+ bl kvmhv_accumulate_time
+ #endif
+
++#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
++BEGIN_FTR_SECTION
++ bl kvmppc_restore_tm
++END_FTR_SECTION_IFSET(CPU_FTR_TM)
++#endif
++
+ /* load up FP state */
+ bl kvmppc_load_fp
+
+@@ -2514,6 +2319,239 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
+ mr r4,r31
+ blr
+
++#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
++/*
++ * Save transactional state and TM-related registers.
++ * Called with r9 pointing to the vcpu struct.
++ * This can modify all checkpointed registers, but
++ * restores r1, r2 and r9 (vcpu pointer) before exit.
++ */
++kvmppc_save_tm:
++ mflr r0
++ std r0, PPC_LR_STKOFF(r1)
++
++ /* Turn on TM. */
++ mfmsr r8
++ li r0, 1
++ rldimi r8, r0, MSR_TM_LG, 63-MSR_TM_LG
++ mtmsrd r8
++
++ ld r5, VCPU_MSR(r9)
++ rldicl. r5, r5, 64 - MSR_TS_S_LG, 62
++ beq 1f /* TM not active in guest. */
++
++ std r1, HSTATE_HOST_R1(r13)
++ li r3, TM_CAUSE_KVM_RESCHED
++
++ /* Clear the MSR RI since r1, r13 are all going to be foobar. */
++ li r5, 0
++ mtmsrd r5, 1
++
++ /* All GPRs are volatile at this point. */
++ TRECLAIM(R3)
++
++ /* Temporarily store r13 and r9 so we have some regs to play with */
++ SET_SCRATCH0(r13)
++ GET_PACA(r13)
++ std r9, PACATMSCRATCH(r13)
++ ld r9, HSTATE_KVM_VCPU(r13)
++
++ /* Get a few more GPRs free. */
++ std r29, VCPU_GPRS_TM(29)(r9)
++ std r30, VCPU_GPRS_TM(30)(r9)
++ std r31, VCPU_GPRS_TM(31)(r9)
++
++ /* Save away PPR and DSCR soon so don't run with user values. */
++ mfspr r31, SPRN_PPR
++ HMT_MEDIUM
++ mfspr r30, SPRN_DSCR
++ ld r29, HSTATE_DSCR(r13)
++ mtspr SPRN_DSCR, r29
++
++ /* Save all but r9, r13 & r29-r31 */
++ reg = 0
++ .rept 29
++ .if (reg != 9) && (reg != 13)
++ std reg, VCPU_GPRS_TM(reg)(r9)
++ .endif
++ reg = reg + 1
++ .endr
++ /* ... now save r13 */
++ GET_SCRATCH0(r4)
++ std r4, VCPU_GPRS_TM(13)(r9)
++ /* ... and save r9 */
++ ld r4, PACATMSCRATCH(r13)
++ std r4, VCPU_GPRS_TM(9)(r9)
++
++ /* Reload stack pointer and TOC. */
++ ld r1, HSTATE_HOST_R1(r13)
++ ld r2, PACATOC(r13)
++
++ /* Set MSR RI now we have r1 and r13 back. */
++ li r5, MSR_RI
++ mtmsrd r5, 1
++
++ /* Save away checkpinted SPRs. */
++ std r31, VCPU_PPR_TM(r9)
++ std r30, VCPU_DSCR_TM(r9)
++ mflr r5
++ mfcr r6
++ mfctr r7
++ mfspr r8, SPRN_AMR
++ mfspr r10, SPRN_TAR
++ std r5, VCPU_LR_TM(r9)
++ stw r6, VCPU_CR_TM(r9)
++ std r7, VCPU_CTR_TM(r9)
++ std r8, VCPU_AMR_TM(r9)
++ std r10, VCPU_TAR_TM(r9)
++
++ /* Restore r12 as trap number. */
++ lwz r12, VCPU_TRAP(r9)
++
++ /* Save FP/VSX. */
++ addi r3, r9, VCPU_FPRS_TM
++ bl store_fp_state
++ addi r3, r9, VCPU_VRS_TM
++ bl store_vr_state
++ mfspr r6, SPRN_VRSAVE
++ stw r6, VCPU_VRSAVE_TM(r9)
++1:
++ /*
++ * We need to save these SPRs after the treclaim so that the software
++ * error code is recorded correctly in the TEXASR. Also the user may
++ * change these outside of a transaction, so they must always be
++ * context switched.
++ */
++ mfspr r5, SPRN_TFHAR
++ mfspr r6, SPRN_TFIAR
++ mfspr r7, SPRN_TEXASR
++ std r5, VCPU_TFHAR(r9)
++ std r6, VCPU_TFIAR(r9)
++ std r7, VCPU_TEXASR(r9)
++
++ ld r0, PPC_LR_STKOFF(r1)
++ mtlr r0
++ blr
++
++/*
++ * Restore transactional state and TM-related registers.
++ * Called with r4 pointing to the vcpu struct.
++ * This potentially modifies all checkpointed registers.
++ * It restores r1, r2, r4 from the PACA.
++ */
++kvmppc_restore_tm:
++ mflr r0
++ std r0, PPC_LR_STKOFF(r1)
++
++ /* Turn on TM/FP/VSX/VMX so we can restore them. */
++ mfmsr r5
++ li r6, MSR_TM >> 32
++ sldi r6, r6, 32
++ or r5, r5, r6
++ ori r5, r5, MSR_FP
++ oris r5, r5, (MSR_VEC | MSR_VSX)@h
++ mtmsrd r5
++
++ /*
++ * The user may change these outside of a transaction, so they must
++ * always be context switched.
++ */
++ ld r5, VCPU_TFHAR(r4)
++ ld r6, VCPU_TFIAR(r4)
++ ld r7, VCPU_TEXASR(r4)
++ mtspr SPRN_TFHAR, r5
++ mtspr SPRN_TFIAR, r6
++ mtspr SPRN_TEXASR, r7
++
++ ld r5, VCPU_MSR(r4)
++ rldicl. r5, r5, 64 - MSR_TS_S_LG, 62
++ beqlr /* TM not active in guest */
++ std r1, HSTATE_HOST_R1(r13)
++
++ /* Make sure the failure summary is set, otherwise we'll program check
++ * when we trechkpt. It's possible that this might have been not set
++ * on a kvmppc_set_one_reg() call but we shouldn't let this crash the
++ * host.
++ */
++ oris r7, r7, (TEXASR_FS)@h
++ mtspr SPRN_TEXASR, r7
++
++ /*
++ * We need to load up the checkpointed state for the guest.
++ * We need to do this early as it will blow away any GPRs, VSRs and
++ * some SPRs.
++ */
++
++ mr r31, r4
++ addi r3, r31, VCPU_FPRS_TM
++ bl load_fp_state
++ addi r3, r31, VCPU_VRS_TM
++ bl load_vr_state
++ mr r4, r31
++ lwz r7, VCPU_VRSAVE_TM(r4)
++ mtspr SPRN_VRSAVE, r7
++
++ ld r5, VCPU_LR_TM(r4)
++ lwz r6, VCPU_CR_TM(r4)
++ ld r7, VCPU_CTR_TM(r4)
++ ld r8, VCPU_AMR_TM(r4)
++ ld r9, VCPU_TAR_TM(r4)
++ mtlr r5
++ mtcr r6
++ mtctr r7
++ mtspr SPRN_AMR, r8
++ mtspr SPRN_TAR, r9
++
++ /*
++ * Load up PPR and DSCR values but don't put them in the actual SPRs
++ * till the last moment to avoid running with userspace PPR and DSCR for
++ * too long.
++ */
++ ld r29, VCPU_DSCR_TM(r4)
++ ld r30, VCPU_PPR_TM(r4)
++
++ std r2, PACATMSCRATCH(r13) /* Save TOC */
++
++ /* Clear the MSR RI since r1, r13 are all going to be foobar. */
++ li r5, 0
++ mtmsrd r5, 1
++
++ /* Load GPRs r0-r28 */
++ reg = 0
++ .rept 29
++ ld reg, VCPU_GPRS_TM(reg)(r31)
++ reg = reg + 1
++ .endr
++
++ mtspr SPRN_DSCR, r29
++ mtspr SPRN_PPR, r30
++
++ /* Load final GPRs */
++ ld 29, VCPU_GPRS_TM(29)(r31)
++ ld 30, VCPU_GPRS_TM(30)(r31)
++ ld 31, VCPU_GPRS_TM(31)(r31)
++
++ /* TM checkpointed state is now setup. All GPRs are now volatile. */
++ TRECHKPT
++
++ /* Now let's get back the state we need. */
++ HMT_MEDIUM
++ GET_PACA(r13)
++ ld r29, HSTATE_DSCR(r13)
++ mtspr SPRN_DSCR, r29
++ ld r4, HSTATE_KVM_VCPU(r13)
++ ld r1, HSTATE_HOST_R1(r13)
++ ld r2, PACATMSCRATCH(r13)
++
++ /* Set the MSR RI since we have our registers back. */
++ li r5, MSR_RI
++ mtmsrd r5, 1
++
++ ld r0, PPC_LR_STKOFF(r1)
++ mtlr r0
++ blr
++#endif
++
+ /*
+ * We come here if we get any exception or interrupt while we are
+ * executing host real mode code while in guest MMU context.
+diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
+index 61d5a17f45c0..e8b05e635595 100644
+--- a/arch/powerpc/platforms/pseries/iommu.c
++++ b/arch/powerpc/platforms/pseries/iommu.c
+@@ -825,7 +825,8 @@ machine_arch_initcall(pseries, find_existing_ddw_windows);
+ static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail,
+ struct ddw_query_response *query)
+ {
+- struct eeh_dev *edev;
++ struct device_node *dn;
++ struct pci_dn *pdn;
+ u32 cfg_addr;
+ u64 buid;
+ int ret;
+@@ -836,11 +837,10 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail,
+ * Retrieve them from the pci device, not the node with the
+ * dma-window property
+ */
+- edev = pci_dev_to_eeh_dev(dev);
+- cfg_addr = edev->config_addr;
+- if (edev->pe_config_addr)
+- cfg_addr = edev->pe_config_addr;
+- buid = edev->phb->buid;
++ dn = pci_device_to_OF_node(dev);
++ pdn = PCI_DN(dn);
++ buid = pdn->phb->buid;
++ cfg_addr = ((pdn->busno << 16) | (pdn->devfn << 8));
+
+ ret = rtas_call(ddw_avail[0], 3, 5, (u32 *)query,
+ cfg_addr, BUID_HI(buid), BUID_LO(buid));
+@@ -854,7 +854,8 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddw_avail,
+ struct ddw_create_response *create, int page_shift,
+ int window_shift)
+ {
+- struct eeh_dev *edev;
++ struct device_node *dn;
++ struct pci_dn *pdn;
+ u32 cfg_addr;
+ u64 buid;
+ int ret;
+@@ -865,11 +866,10 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddw_avail,
+ * Retrieve them from the pci device, not the node with the
+ * dma-window property
+ */
+- edev = pci_dev_to_eeh_dev(dev);
+- cfg_addr = edev->config_addr;
+- if (edev->pe_config_addr)
+- cfg_addr = edev->pe_config_addr;
+- buid = edev->phb->buid;
++ dn = pci_device_to_OF_node(dev);
++ pdn = PCI_DN(dn);
++ buid = pdn->phb->buid;
++ cfg_addr = ((pdn->busno << 16) | (pdn->devfn << 8));
+
+ do {
+ /* extra outputs are LIOBN and dma-addr (hi, lo) */
+diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
+index ebf82a99df45..9ac703cfdb21 100644
+--- a/arch/s390/mm/pgtable.c
++++ b/arch/s390/mm/pgtable.c
+@@ -173,7 +173,7 @@ EXPORT_SYMBOL_GPL(gmap_alloc);
+ static void gmap_flush_tlb(struct gmap *gmap)
+ {
+ if (MACHINE_HAS_IDTE)
+- __tlb_flush_asce(gmap->mm, gmap->asce);
++ __tlb_flush_idte(gmap->asce);
+ else
+ __tlb_flush_global();
+ }
+@@ -212,7 +212,7 @@ void gmap_free(struct gmap *gmap)
+
+ /* Flush tlb. */
+ if (MACHINE_HAS_IDTE)
+- __tlb_flush_asce(gmap->mm, gmap->asce);
++ __tlb_flush_idte(gmap->asce);
+ else
+ __tlb_flush_global();
+
+diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
+index 22212615a137..185ebd2c0c3c 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel.c
++++ b/arch/x86/kernel/cpu/perf_event_intel.c
+@@ -3332,7 +3332,7 @@ __init int intel_pmu_init(void)
+ c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
+ }
+ c->idxmsk64 &=
+- ~(~0UL << (INTEL_PMC_IDX_FIXED + x86_pmu.num_counters_fixed));
++ ~(~0ULL << (INTEL_PMC_IDX_FIXED + x86_pmu.num_counters_fixed));
+ c->weight = hweight64(c->idxmsk64);
+ }
+ }
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 1274fac7c28f..08f9d9230b94 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -7770,6 +7770,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
+ if ((vectoring_info & VECTORING_INFO_VALID_MASK) &&
+ (exit_reason != EXIT_REASON_EXCEPTION_NMI &&
+ exit_reason != EXIT_REASON_EPT_VIOLATION &&
++ exit_reason != EXIT_REASON_PML_FULL &&
+ exit_reason != EXIT_REASON_TASK_SWITCH)) {
+ vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV;
+@@ -8377,6 +8378,22 @@ static void vmx_load_vmcs01(struct kvm_vcpu *vcpu)
+ put_cpu();
+ }
+
++/*
++ * Ensure that the current vmcs of the logical processor is the
++ * vmcs01 of the vcpu before calling free_nested().
++ */
++static void vmx_free_vcpu_nested(struct kvm_vcpu *vcpu)
++{
++ struct vcpu_vmx *vmx = to_vmx(vcpu);
++ int r;
++
++ r = vcpu_load(vcpu);
++ BUG_ON(r);
++ vmx_load_vmcs01(vcpu);
++ free_nested(vmx);
++ vcpu_put(vcpu);
++}
++
+ static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
+ {
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+@@ -8385,8 +8402,7 @@ static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
+ vmx_disable_pml(vmx);
+ free_vpid(vmx);
+ leave_guest_mode(vcpu);
+- vmx_load_vmcs01(vcpu);
+- free_nested(vmx);
++ vmx_free_vcpu_nested(vcpu);
+ free_loaded_vmcs(vmx->loaded_vmcs);
+ kfree(vmx->guest_msrs);
+ kvm_vcpu_uninit(vcpu);
+diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl
+index ef8187f9d28d..f3a443dad74c 100644
+--- a/arch/x86/syscalls/syscall_32.tbl
++++ b/arch/x86/syscalls/syscall_32.tbl
+@@ -294,7 +294,7 @@
+ # 285 sys_setaltroot
+ 286 i386 add_key sys_add_key
+ 287 i386 request_key sys_request_key
+-288 i386 keyctl sys_keyctl
++288 i386 keyctl sys_keyctl compat_sys_keyctl
+ 289 i386 ioprio_set sys_ioprio_set
+ 290 i386 ioprio_get sys_ioprio_get
+ 291 i386 inotify_init sys_inotify_init
+diff --git a/block/genhd.c b/block/genhd.c
+index ea982eadaf63..f5d12185d631 100644
+--- a/block/genhd.c
++++ b/block/genhd.c
+@@ -828,6 +828,7 @@ static void disk_seqf_stop(struct seq_file *seqf, void *v)
+ if (iter) {
+ class_dev_iter_exit(iter);
+ kfree(iter);
++ seqf->private = NULL;
+ }
+ }
+
+diff --git a/crypto/gcm.c b/crypto/gcm.c
+index 2e403f6138c1..ee3c29bd7ddb 100644
+--- a/crypto/gcm.c
++++ b/crypto/gcm.c
+@@ -716,7 +716,9 @@ static struct crypto_instance *crypto_gcm_alloc_common(struct rtattr **tb,
+
+ ghash_alg = crypto_find_alg(ghash_name, &crypto_ahash_type,
+ CRYPTO_ALG_TYPE_HASH,
+- CRYPTO_ALG_TYPE_AHASH_MASK);
++ CRYPTO_ALG_TYPE_AHASH_MASK |
++ crypto_requires_sync(algt->type,
++ algt->mask));
+ if (IS_ERR(ghash_alg))
+ return ERR_CAST(ghash_alg);
+
+diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c
+index 3bd749c7bb70..46dcbbc4f32e 100644
+--- a/crypto/scatterwalk.c
++++ b/crypto/scatterwalk.c
+@@ -68,7 +68,8 @@ static void scatterwalk_pagedone(struct scatter_walk *walk, int out,
+
+ void scatterwalk_done(struct scatter_walk *walk, int out, int more)
+ {
+- if (!(scatterwalk_pagelen(walk) & (PAGE_SIZE - 1)) || !more)
++ if (!more || walk->offset >= walk->sg->offset + walk->sg->length ||
++ !(walk->offset & (PAGE_SIZE - 1)))
+ scatterwalk_pagedone(walk, out, more);
+ }
+ EXPORT_SYMBOL_GPL(scatterwalk_done);
+diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
+index 0beaa52df66b..c31980079507 100644
+--- a/drivers/bluetooth/ath3k.c
++++ b/drivers/bluetooth/ath3k.c
+@@ -122,6 +122,8 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x13d3, 0x3432) },
+ { USB_DEVICE(0x13d3, 0x3472) },
+ { USB_DEVICE(0x13d3, 0x3474) },
++ { USB_DEVICE(0x13d3, 0x3487) },
++ { USB_DEVICE(0x13d3, 0x3490) },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE02C) },
+@@ -188,6 +190,8 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU22 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index ac553f997a1c..81721ad6fcb0 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -224,6 +224,8 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
+diff --git a/drivers/gpio/gpio-intel-mid.c b/drivers/gpio/gpio-intel-mid.c
+index aa28c65eb6b4..14945fd9d5e1 100644
+--- a/drivers/gpio/gpio-intel-mid.c
++++ b/drivers/gpio/gpio-intel-mid.c
+@@ -17,7 +17,6 @@
+ * Moorestown platform Langwell chip.
+ * Medfield platform Penwell chip.
+ * Clovertrail platform Cloverview chip.
+- * Merrifield platform Tangier chip.
+ */
+
+ #include <linux/module.h>
+@@ -64,10 +63,6 @@ enum GPIO_REG {
+ /* intel_mid gpio driver data */
+ struct intel_mid_gpio_ddata {
+ u16 ngpio; /* number of gpio pins */
+- u32 gplr_offset; /* offset of first GPLR register from base */
+- u32 flis_base; /* base address of FLIS registers */
+- u32 flis_len; /* length of FLIS registers */
+- u32 (*get_flis_offset)(int gpio);
+ u32 chip_irq_type; /* chip interrupt type */
+ };
+
+@@ -257,15 +252,6 @@ static const struct intel_mid_gpio_ddata gpio_cloverview_core = {
+ .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
+ };
+
+-static const struct intel_mid_gpio_ddata gpio_tangier = {
+- .ngpio = 192,
+- .gplr_offset = 4,
+- .flis_base = 0xff0c0000,
+- .flis_len = 0x8000,
+- .get_flis_offset = NULL,
+- .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
+-};
+-
+ static const struct pci_device_id intel_gpio_ids[] = {
+ {
+ /* Lincroft */
+@@ -292,11 +278,6 @@ static const struct pci_device_id intel_gpio_ids[] = {
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x08f7),
+ .driver_data = (kernel_ulong_t)&gpio_cloverview_core,
+ },
+- {
+- /* Tangier */
+- PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1199),
+- .driver_data = (kernel_ulong_t)&gpio_tangier,
+- },
+ { 0 }
+ };
+ MODULE_DEVICE_TABLE(pci, intel_gpio_ids);
+diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
+index 16f7c4f2d8c8..6e2720ea7d45 100644
+--- a/drivers/gpio/gpio-pca953x.c
++++ b/drivers/gpio/gpio-pca953x.c
+@@ -76,7 +76,7 @@ MODULE_DEVICE_TABLE(i2c, pca953x_id);
+ #define MAX_BANK 5
+ #define BANK_SZ 8
+
+-#define NBANK(chip) (chip->gpio_chip.ngpio / BANK_SZ)
++#define NBANK(chip) DIV_ROUND_UP(chip->gpio_chip.ngpio, BANK_SZ)
+
+ struct pca953x_chip {
+ unsigned gpio_start;
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index 5250596a612e..56323732c748 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -7129,14 +7129,12 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_encoder *encoder;
+- int i;
+ u32 val, final;
+ bool has_lvds = false;
+ bool has_cpu_edp = false;
+ bool has_panel = false;
+ bool has_ck505 = false;
+ bool can_ssc = false;
+- bool using_ssc_source = false;
+
+ /* We need to take the global config into account */
+ for_each_intel_encoder(dev, encoder) {
+@@ -7163,22 +7161,8 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ can_ssc = true;
+ }
+
+- /* Check if any DPLLs are using the SSC source */
+- for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+- u32 temp = I915_READ(PCH_DPLL(i));
+-
+- if (!(temp & DPLL_VCO_ENABLE))
+- continue;
+-
+- if ((temp & PLL_REF_INPUT_MASK) ==
+- PLLB_REF_INPUT_SPREADSPECTRUMIN) {
+- using_ssc_source = true;
+- break;
+- }
+- }
+-
+- DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n",
+- has_panel, has_lvds, has_ck505, using_ssc_source);
++ DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
++ has_panel, has_lvds, has_ck505);
+
+ /* Ironlake: try to setup display ref clock before DPLL
+ * enabling. This is only under driver's control after
+@@ -7215,9 +7199,9 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
+ } else
+ final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+- } else if (using_ssc_source) {
+- final |= DREF_SSC_SOURCE_ENABLE;
+- final |= DREF_SSC1_ENABLE;
++ } else {
++ final |= DREF_SSC_SOURCE_DISABLE;
++ final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+ }
+
+ if (final == val)
+@@ -7263,7 +7247,7 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+ } else {
+- DRM_DEBUG_KMS("Disabling CPU source output\n");
++ DRM_DEBUG_KMS("Disabling SSC entirely\n");
+
+ val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+
+@@ -7274,20 +7258,16 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+
+- if (!using_ssc_source) {
+- DRM_DEBUG_KMS("Disabling SSC source\n");
+-
+- /* Turn off the SSC source */
+- val &= ~DREF_SSC_SOURCE_MASK;
+- val |= DREF_SSC_SOURCE_DISABLE;
++ /* Turn off the SSC source */
++ val &= ~DREF_SSC_SOURCE_MASK;
++ val |= DREF_SSC_SOURCE_DISABLE;
+
+- /* Turn off SSC1 */
+- val &= ~DREF_SSC1_ENABLE;
++ /* Turn off SSC1 */
++ val &= ~DREF_SSC1_ENABLE;
+
+- I915_WRITE(PCH_DREF_CONTROL, val);
+- POSTING_READ(PCH_DREF_CONTROL);
+- udelay(200);
+- }
++ I915_WRITE(PCH_DREF_CONTROL, val);
++ POSTING_READ(PCH_DREF_CONTROL);
++ udelay(200);
+ }
+
+ BUG_ON(val != final);
+diff --git a/drivers/gpu/drm/nouveau/nv04_fbcon.c b/drivers/gpu/drm/nouveau/nv04_fbcon.c
+index 7a92d15d474e..1ff5ca37dd62 100644
+--- a/drivers/gpu/drm/nouveau/nv04_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nv04_fbcon.c
+@@ -107,11 +107,11 @@ nv04_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ ((image->dx + image->width) & 0xffff));
+ OUT_RING(chan, bg);
+ OUT_RING(chan, fg);
+- OUT_RING(chan, (image->height << 16) | image->width);
++ OUT_RING(chan, (image->height << 16) | ALIGN(image->width, 8));
+ OUT_RING(chan, (image->height << 16) | image->width);
+ OUT_RING(chan, (image->dy << 16) | (image->dx & 0xffff));
+
+- dsize = ALIGN(image->width * image->height, 32) >> 5;
++ dsize = ALIGN(ALIGN(image->width, 8) * image->height, 32) >> 5;
+ while (dsize) {
+ int iter_len = dsize > 128 ? 128 : dsize;
+
+diff --git a/drivers/gpu/drm/nouveau/nv50_fbcon.c b/drivers/gpu/drm/nouveau/nv50_fbcon.c
+index cb2a71ada99e..8462f72e8819 100644
+--- a/drivers/gpu/drm/nouveau/nv50_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nv50_fbcon.c
+@@ -125,7 +125,7 @@ nv50_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ OUT_RING(chan, 0);
+ OUT_RING(chan, image->dy);
+
+- dwords = ALIGN(image->width * image->height, 32) >> 5;
++ dwords = ALIGN(ALIGN(image->width, 8) * image->height, 32) >> 5;
+ while (dwords) {
+ int push = dwords > 2047 ? 2047 : dwords;
+
+diff --git a/drivers/gpu/drm/nouveau/nvc0_fbcon.c b/drivers/gpu/drm/nouveau/nvc0_fbcon.c
+index 69f760e8c54f..90552420c217 100644
+--- a/drivers/gpu/drm/nouveau/nvc0_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nvc0_fbcon.c
+@@ -125,7 +125,7 @@ nvc0_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ OUT_RING (chan, 0);
+ OUT_RING (chan, image->dy);
+
+- dwords = ALIGN(image->width * image->height, 32) >> 5;
++ dwords = ALIGN(ALIGN(image->width, 8) * image->height, 32) >> 5;
+ while (dwords) {
+ int push = dwords > 2047 ? 2047 : dwords;
+
+diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv30.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv30.c
+index dcc84eb54fb6..183d1701ae94 100644
+--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv30.c
++++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv30.c
+@@ -88,8 +88,8 @@ nv30_gr_context_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ nv_wo32(chan, i, 0x00040004);
+ for (i = 0x1f18; i <= 0x3088 ; i += 16) {
+ nv_wo32(chan, i + 0, 0x10700ff9);
+- nv_wo32(chan, i + 1, 0x0436086c);
+- nv_wo32(chan, i + 2, 0x000c001b);
++ nv_wo32(chan, i + 4, 0x0436086c);
++ nv_wo32(chan, i + 8, 0x000c001b);
+ }
+ for (i = 0x30b8; i < 0x30c8; i += 4)
+ nv_wo32(chan, i, 0x0000ffff);
+diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv34.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv34.c
+index 985b7f3306ae..720c97135e85 100644
+--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv34.c
++++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv34.c
+@@ -86,8 +86,8 @@ nv34_gr_context_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ nv_wo32(chan, i, 0x00040004);
+ for (i = 0x15ac; i <= 0x271c ; i += 16) {
+ nv_wo32(chan, i + 0, 0x10700ff9);
+- nv_wo32(chan, i + 1, 0x0436086c);
+- nv_wo32(chan, i + 2, 0x000c001b);
++ nv_wo32(chan, i + 4, 0x0436086c);
++ nv_wo32(chan, i + 8, 0x000c001b);
+ }
+ for (i = 0x274c; i < 0x275c; i += 4)
+ nv_wo32(chan, i, 0x0000ffff);
+diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
+index 0b04b9282f56..d4ac8c837314 100644
+--- a/drivers/gpu/drm/radeon/atombios_encoders.c
++++ b/drivers/gpu/drm/radeon/atombios_encoders.c
+@@ -120,6 +120,7 @@ atombios_set_backlight_level(struct radeon_encoder *radeon_encoder, u8 level)
+ case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
++ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY3:
+ if (dig->backlight_level == 0)
+ atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_LCD_BLOFF, 0, 0);
+ else {
+diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
+index de9a2ffcf5f7..0c5b3eeff82d 100644
+--- a/drivers/gpu/drm/radeon/radeon_atombios.c
++++ b/drivers/gpu/drm/radeon/radeon_atombios.c
+@@ -1155,7 +1155,7 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
+ le16_to_cpu(firmware_info->info.usReferenceClock);
+ p1pll->reference_div = 0;
+
+- if (crev < 2)
++ if ((frev < 2) && (crev < 2))
+ p1pll->pll_out_min =
+ le16_to_cpu(firmware_info->info.usMinPixelClockPLL_Output);
+ else
+@@ -1164,7 +1164,7 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
+ p1pll->pll_out_max =
+ le32_to_cpu(firmware_info->info.ulMaxPixelClockPLL_Output);
+
+- if (crev >= 4) {
++ if (((frev < 2) && (crev >= 4)) || (frev >= 2)) {
+ p1pll->lcd_pll_out_min =
+ le16_to_cpu(firmware_info->info_14.usLcdMinPixelClockPLL_Output) * 100;
+ if (p1pll->lcd_pll_out_min == 0)
+diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+index 8bc7d0bbd3c8..868247c22de4 100644
+--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
++++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+@@ -10,6 +10,7 @@
+ #include <linux/slab.h>
+ #include <linux/acpi.h>
+ #include <linux/pci.h>
++#include <linux/delay.h>
+
+ #include "radeon_acpi.h"
+
+@@ -255,6 +256,10 @@ static int radeon_atpx_set_discrete_state(struct radeon_atpx *atpx, u8 state)
+ if (!info)
+ return -EIO;
+ kfree(info);
++
++ /* 200ms delay is required after off */
++ if (state == 0)
++ msleep(200);
+ }
+ return 0;
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
+index f5c96fb7e8d0..9f699e87320a 100644
+--- a/drivers/gpu/drm/radeon/radeon_connectors.c
++++ b/drivers/gpu/drm/radeon/radeon_connectors.c
+@@ -2039,7 +2039,6 @@ radeon_add_atom_connector(struct drm_device *dev,
+ RADEON_OUTPUT_CSC_BYPASS);
+ /* no HPD on analog connectors */
+ radeon_connector->hpd.hpd = RADEON_HPD_NONE;
+- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+ connector->interlace_allowed = true;
+ connector->doublescan_allowed = true;
+ break;
+@@ -2289,8 +2288,10 @@ radeon_add_atom_connector(struct drm_device *dev,
+ }
+
+ if (radeon_connector->hpd.hpd == RADEON_HPD_NONE) {
+- if (i2c_bus->valid)
+- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
++ if (i2c_bus->valid) {
++ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
++ DRM_CONNECTOR_POLL_DISCONNECT;
++ }
+ } else
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+
+@@ -2366,7 +2367,6 @@ radeon_add_legacy_connector(struct drm_device *dev,
+ 1);
+ /* no HPD on analog connectors */
+ radeon_connector->hpd.hpd = RADEON_HPD_NONE;
+- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+ connector->interlace_allowed = true;
+ connector->doublescan_allowed = true;
+ break;
+@@ -2451,10 +2451,13 @@ radeon_add_legacy_connector(struct drm_device *dev,
+ }
+
+ if (radeon_connector->hpd.hpd == RADEON_HPD_NONE) {
+- if (i2c_bus->valid)
+- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
++ if (i2c_bus->valid) {
++ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
++ DRM_CONNECTOR_POLL_DISCONNECT;
++ }
+ } else
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
++
+ connector->display_info.subpixel_order = subpixel_order;
+ drm_connector_register(connector);
+ }
+diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
+index e094c572b86e..1a2032c2c1fb 100644
+--- a/drivers/hid/uhid.c
++++ b/drivers/hid/uhid.c
+@@ -51,10 +51,26 @@ struct uhid_device {
+ u32 report_id;
+ u32 report_type;
+ struct uhid_event report_buf;
++ struct work_struct worker;
+ };
+
+ static struct miscdevice uhid_misc;
+
++static void uhid_device_add_worker(struct work_struct *work)
++{
++ struct uhid_device *uhid = container_of(work, struct uhid_device, worker);
++ int ret;
++
++ ret = hid_add_device(uhid->hid);
++ if (ret) {
++ hid_err(uhid->hid, "Cannot register HID device: error %d\n", ret);
++
++ hid_destroy_device(uhid->hid);
++ uhid->hid = NULL;
++ uhid->running = false;
++ }
++}
++
+ static void uhid_queue(struct uhid_device *uhid, struct uhid_event *ev)
+ {
+ __u8 newhead;
+@@ -498,18 +514,14 @@ static int uhid_dev_create2(struct uhid_device *uhid,
+ uhid->hid = hid;
+ uhid->running = true;
+
+- ret = hid_add_device(hid);
+- if (ret) {
+- hid_err(hid, "Cannot register HID device\n");
+- goto err_hid;
+- }
++ /* Adding of a HID device is done through a worker, to allow HID drivers
++ * which use feature requests during .probe to work, without they would
++ * be blocked on devlock, which is held by uhid_char_write.
++ */
++ schedule_work(&uhid->worker);
+
+ return 0;
+
+-err_hid:
+- hid_destroy_device(hid);
+- uhid->hid = NULL;
+- uhid->running = false;
+ err_free:
+ kfree(uhid->rd_data);
+ uhid->rd_data = NULL;
+@@ -550,6 +562,8 @@ static int uhid_dev_destroy(struct uhid_device *uhid)
+ uhid->running = false;
+ wake_up_interruptible(&uhid->report_wait);
+
++ cancel_work_sync(&uhid->worker);
++
+ hid_destroy_device(uhid->hid);
+ kfree(uhid->rd_data);
+
+@@ -612,6 +626,7 @@ static int uhid_char_open(struct inode *inode, struct file *file)
+ init_waitqueue_head(&uhid->waitq);
+ init_waitqueue_head(&uhid->report_wait);
+ uhid->running = false;
++ INIT_WORK(&uhid->worker, uhid_device_add_worker);
+
+ file->private_data = uhid;
+ nonseekable_open(inode, file);
+diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c
+index 98ba761cbb9c..d8738d4f8df3 100644
+--- a/drivers/iio/accel/kxsd9.c
++++ b/drivers/iio/accel/kxsd9.c
+@@ -81,7 +81,7 @@ static int kxsd9_write_scale(struct iio_dev *indio_dev, int micro)
+
+ mutex_lock(&st->buf_lock);
+ ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
+- if (ret)
++ if (ret < 0)
+ goto error_ret;
+ st->tx[0] = KXSD9_WRITE(KXSD9_REG_CTRL_C);
+ st->tx[1] = (ret & ~KXSD9_FS_MASK) | i;
+@@ -163,7 +163,7 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev,
+ break;
+ case IIO_CHAN_INFO_SCALE:
+ ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
+- if (ret)
++ if (ret < 0)
+ goto error_ret;
+ *val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK];
+ ret = IIO_VAL_INT_PLUS_MICRO;
+diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
+index 70f78c3062a7..8e2b9e70511d 100644
+--- a/drivers/iio/adc/ad7266.c
++++ b/drivers/iio/adc/ad7266.c
+@@ -396,8 +396,8 @@ static int ad7266_probe(struct spi_device *spi)
+
+ st = iio_priv(indio_dev);
+
+- st->reg = devm_regulator_get(&spi->dev, "vref");
+- if (!IS_ERR_OR_NULL(st->reg)) {
++ st->reg = devm_regulator_get_optional(&spi->dev, "vref");
++ if (!IS_ERR(st->reg)) {
+ ret = regulator_enable(st->reg);
+ if (ret)
+ return ret;
+@@ -408,6 +408,9 @@ static int ad7266_probe(struct spi_device *spi)
+
+ st->vref_mv = ret / 1000;
+ } else {
++ /* Any other error indicates that the regulator does exist */
++ if (PTR_ERR(st->reg) != -ENODEV)
++ return PTR_ERR(st->reg);
+ /* Use internal reference */
+ st->vref_mv = 2500;
+ }
+diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
+index d31098e0c43f..ae824d40195a 100644
+--- a/drivers/iio/industrialio-trigger.c
++++ b/drivers/iio/industrialio-trigger.c
+@@ -203,22 +203,35 @@ static int iio_trigger_attach_poll_func(struct iio_trigger *trig,
+
+ /* Prevent the module from being removed whilst attached to a trigger */
+ __module_get(pf->indio_dev->info->driver_module);
++
++ /* Get irq number */
+ pf->irq = iio_trigger_get_irq(trig);
++ if (pf->irq < 0)
++ goto out_put_module;
++
++ /* Request irq */
+ ret = request_threaded_irq(pf->irq, pf->h, pf->thread,
+ pf->type, pf->name,
+ pf);
+- if (ret < 0) {
+- module_put(pf->indio_dev->info->driver_module);
+- return ret;
+- }
++ if (ret < 0)
++ goto out_put_irq;
+
++ /* Enable trigger in driver */
+ if (trig->ops && trig->ops->set_trigger_state && notinuse) {
+ ret = trig->ops->set_trigger_state(trig, true);
+ if (ret < 0)
+- module_put(pf->indio_dev->info->driver_module);
++ goto out_free_irq;
+ }
+
+ return ret;
++
++out_free_irq:
++ free_irq(pf->irq, pf);
++out_put_irq:
++ iio_trigger_put_irq(trig, pf->irq);
++out_put_module:
++ module_put(pf->indio_dev->info->driver_module);
++ return ret;
+ }
+
+ static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
+diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
+index e881fa6291e9..1f7f844bc0b8 100644
+--- a/drivers/iio/pressure/st_pressure_core.c
++++ b/drivers/iio/pressure/st_pressure_core.c
+@@ -28,15 +28,21 @@
+ #include <linux/iio/common/st_sensors.h>
+ #include "st_pressure.h"
+
++#define MCELSIUS_PER_CELSIUS 1000
++
++/* Default pressure sensitivity */
+ #define ST_PRESS_LSB_PER_MBAR 4096UL
+ #define ST_PRESS_KPASCAL_NANO_SCALE (100000000UL / \
+ ST_PRESS_LSB_PER_MBAR)
++
++/* Default temperature sensitivity */
+ #define ST_PRESS_LSB_PER_CELSIUS 480UL
+-#define ST_PRESS_CELSIUS_NANO_SCALE (1000000000UL / \
+- ST_PRESS_LSB_PER_CELSIUS)
++#define ST_PRESS_MILLI_CELSIUS_OFFSET 42500UL
++
+ #define ST_PRESS_NUMBER_DATA_CHANNELS 1
+
+ /* FULLSCALE */
++#define ST_PRESS_FS_AVL_1100MB 1100
+ #define ST_PRESS_FS_AVL_1260MB 1260
+
+ #define ST_PRESS_1_OUT_XL_ADDR 0x28
+@@ -54,18 +60,20 @@
+ #define ST_PRESS_LPS331AP_PW_MASK 0x80
+ #define ST_PRESS_LPS331AP_FS_ADDR 0x23
+ #define ST_PRESS_LPS331AP_FS_MASK 0x30
+-#define ST_PRESS_LPS331AP_FS_AVL_1260_VAL 0x00
+-#define ST_PRESS_LPS331AP_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE
+-#define ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN ST_PRESS_CELSIUS_NANO_SCALE
+ #define ST_PRESS_LPS331AP_BDU_ADDR 0x20
+ #define ST_PRESS_LPS331AP_BDU_MASK 0x04
+ #define ST_PRESS_LPS331AP_DRDY_IRQ_ADDR 0x22
+ #define ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK 0x04
+ #define ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK 0x20
+ #define ST_PRESS_LPS331AP_MULTIREAD_BIT true
+-#define ST_PRESS_LPS331AP_TEMP_OFFSET 42500
+
+ /* CUSTOM VALUES FOR LPS001WP SENSOR */
++
++/* LPS001WP pressure resolution */
++#define ST_PRESS_LPS001WP_LSB_PER_MBAR 16UL
++/* LPS001WP temperature resolution */
++#define ST_PRESS_LPS001WP_LSB_PER_CELSIUS 64UL
++
+ #define ST_PRESS_LPS001WP_WAI_EXP 0xba
+ #define ST_PRESS_LPS001WP_ODR_ADDR 0x20
+ #define ST_PRESS_LPS001WP_ODR_MASK 0x30
+@@ -74,6 +82,8 @@
+ #define ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL 0x03
+ #define ST_PRESS_LPS001WP_PW_ADDR 0x20
+ #define ST_PRESS_LPS001WP_PW_MASK 0x40
++#define ST_PRESS_LPS001WP_FS_AVL_PRESS_GAIN \
++ (100000000UL / ST_PRESS_LPS001WP_LSB_PER_MBAR)
+ #define ST_PRESS_LPS001WP_BDU_ADDR 0x20
+ #define ST_PRESS_LPS001WP_BDU_MASK 0x04
+ #define ST_PRESS_LPS001WP_MULTIREAD_BIT true
+@@ -90,18 +100,12 @@
+ #define ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL 0x04
+ #define ST_PRESS_LPS25H_PW_ADDR 0x20
+ #define ST_PRESS_LPS25H_PW_MASK 0x80
+-#define ST_PRESS_LPS25H_FS_ADDR 0x00
+-#define ST_PRESS_LPS25H_FS_MASK 0x00
+-#define ST_PRESS_LPS25H_FS_AVL_1260_VAL 0x00
+-#define ST_PRESS_LPS25H_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE
+-#define ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN ST_PRESS_CELSIUS_NANO_SCALE
+ #define ST_PRESS_LPS25H_BDU_ADDR 0x20
+ #define ST_PRESS_LPS25H_BDU_MASK 0x04
+ #define ST_PRESS_LPS25H_DRDY_IRQ_ADDR 0x23
+ #define ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK 0x01
+ #define ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK 0x10
+ #define ST_PRESS_LPS25H_MULTIREAD_BIT true
+-#define ST_PRESS_LPS25H_TEMP_OFFSET 42500
+ #define ST_PRESS_LPS25H_OUT_XL_ADDR 0x28
+ #define ST_TEMP_LPS25H_OUT_L_ADDR 0x2b
+
+@@ -153,7 +157,9 @@ static const struct iio_chan_spec st_press_lps001wp_channels[] = {
+ .storagebits = 16,
+ .endianness = IIO_LE,
+ },
+- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
++ .info_mask_separate =
++ BIT(IIO_CHAN_INFO_RAW) |
++ BIT(IIO_CHAN_INFO_SCALE),
+ .modified = 0,
+ },
+ {
+@@ -169,7 +175,7 @@ static const struct iio_chan_spec st_press_lps001wp_channels[] = {
+ },
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_RAW) |
+- BIT(IIO_CHAN_INFO_OFFSET),
++ BIT(IIO_CHAN_INFO_SCALE),
+ .modified = 0,
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(1)
+@@ -203,11 +209,14 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
+ .addr = ST_PRESS_LPS331AP_FS_ADDR,
+ .mask = ST_PRESS_LPS331AP_FS_MASK,
+ .fs_avl = {
++ /*
++ * Pressure and temperature sensitivity values
++ * as defined in table 3 of LPS331AP datasheet.
++ */
+ [0] = {
+ .num = ST_PRESS_FS_AVL_1260MB,
+- .value = ST_PRESS_LPS331AP_FS_AVL_1260_VAL,
+- .gain = ST_PRESS_LPS331AP_FS_AVL_1260_GAIN,
+- .gain2 = ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN,
++ .gain = ST_PRESS_KPASCAL_NANO_SCALE,
++ .gain2 = ST_PRESS_LSB_PER_CELSIUS,
+ },
+ },
+ },
+@@ -246,7 +255,17 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .fs = {
+- .addr = 0,
++ .fs_avl = {
++ /*
++ * Pressure and temperature resolution values
++ * as defined in table 3 of LPS001WP datasheet.
++ */
++ [0] = {
++ .num = ST_PRESS_FS_AVL_1100MB,
++ .gain = ST_PRESS_LPS001WP_FS_AVL_PRESS_GAIN,
++ .gain2 = ST_PRESS_LPS001WP_LSB_PER_CELSIUS,
++ },
++ },
+ },
+ .bdu = {
+ .addr = ST_PRESS_LPS001WP_BDU_ADDR,
+@@ -282,14 +301,15 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .fs = {
+- .addr = ST_PRESS_LPS25H_FS_ADDR,
+- .mask = ST_PRESS_LPS25H_FS_MASK,
+ .fs_avl = {
++ /*
++ * Pressure and temperature sensitivity values
++ * as defined in table 3 of LPS25H datasheet.
++ */
+ [0] = {
+ .num = ST_PRESS_FS_AVL_1260MB,
+- .value = ST_PRESS_LPS25H_FS_AVL_1260_VAL,
+- .gain = ST_PRESS_LPS25H_FS_AVL_1260_GAIN,
+- .gain2 = ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN,
++ .gain = ST_PRESS_KPASCAL_NANO_SCALE,
++ .gain2 = ST_PRESS_LSB_PER_CELSIUS,
+ },
+ },
+ },
+@@ -343,26 +363,26 @@ static int st_press_read_raw(struct iio_dev *indio_dev,
+
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_SCALE:
+- *val = 0;
+-
+ switch (ch->type) {
+ case IIO_PRESSURE:
++ *val = 0;
+ *val2 = press_data->current_fullscale->gain;
+- break;
++ return IIO_VAL_INT_PLUS_NANO;
+ case IIO_TEMP:
++ *val = MCELSIUS_PER_CELSIUS;
+ *val2 = press_data->current_fullscale->gain2;
+- break;
++ return IIO_VAL_FRACTIONAL;
+ default:
+ err = -EINVAL;
+ goto read_error;
+ }
+
+- return IIO_VAL_INT_PLUS_NANO;
+ case IIO_CHAN_INFO_OFFSET:
+ switch (ch->type) {
+ case IIO_TEMP:
+- *val = 425;
+- *val2 = 10;
++ *val = ST_PRESS_MILLI_CELSIUS_OFFSET *
++ press_data->current_fullscale->gain2;
++ *val2 = MCELSIUS_PER_CELSIUS;
+ break;
+ default:
+ err = -EINVAL;
+diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c
+index bc0d68efd455..c96ddaf00fa6 100644
+--- a/drivers/iio/proximity/as3935.c
++++ b/drivers/iio/proximity/as3935.c
+@@ -64,6 +64,7 @@ struct as3935_state {
+ struct delayed_work work;
+
+ u32 tune_cap;
++ u8 buffer[16]; /* 8-bit data + 56-bit padding + 64-bit timestamp */
+ u8 buf[2] ____cacheline_aligned;
+ };
+
+@@ -72,7 +73,8 @@ static const struct iio_chan_spec as3935_channels[] = {
+ .type = IIO_PROXIMITY,
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_RAW) |
+- BIT(IIO_CHAN_INFO_PROCESSED),
++ BIT(IIO_CHAN_INFO_PROCESSED) |
++ BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 'u',
+@@ -181,7 +183,12 @@ static int as3935_read_raw(struct iio_dev *indio_dev,
+ /* storm out of range */
+ if (*val == AS3935_DATA_MASK)
+ return -EINVAL;
+- *val *= 1000;
++
++ if (m == IIO_CHAN_INFO_PROCESSED)
++ *val *= 1000;
++ break;
++ case IIO_CHAN_INFO_SCALE:
++ *val = 1000;
+ break;
+ default:
+ return -EINVAL;
+@@ -206,10 +213,10 @@ static irqreturn_t as3935_trigger_handler(int irq, void *private)
+ ret = as3935_read(st, AS3935_DATA, &val);
+ if (ret)
+ goto err_read;
+- val &= AS3935_DATA_MASK;
+- val *= 1000;
+
+- iio_push_to_buffers_with_timestamp(indio_dev, &val, pf->timestamp);
++ st->buffer[0] = val & AS3935_DATA_MASK;
++ iio_push_to_buffers_with_timestamp(indio_dev, &st->buffer,
++ pf->timestamp);
+ err_read:
+ iio_trigger_notify_done(indio_dev->trig);
+
+diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
+index cb5ece77fd7d..e7d7230a7e31 100644
+--- a/drivers/input/serio/i8042.c
++++ b/drivers/input/serio/i8042.c
+@@ -1249,6 +1249,7 @@ static int __init i8042_create_kbd_port(void)
+ serio->start = i8042_start;
+ serio->stop = i8042_stop;
+ serio->close = i8042_port_close;
++ serio->ps2_cmd_mutex = &i8042_mutex;
+ serio->port_data = port;
+ serio->dev.parent = &i8042_platform_device->dev;
+ strlcpy(serio->name, "i8042 KBD port", sizeof(serio->name));
+@@ -1345,21 +1346,6 @@ static void i8042_unregister_ports(void)
+ }
+ }
+
+-/*
+- * Checks whether port belongs to i8042 controller.
+- */
+-bool i8042_check_port_owner(const struct serio *port)
+-{
+- int i;
+-
+- for (i = 0; i < I8042_NUM_PORTS; i++)
+- if (i8042_ports[i].serio == port)
+- return true;
+-
+- return false;
+-}
+-EXPORT_SYMBOL(i8042_check_port_owner);
+-
+ static void i8042_free_irqs(void)
+ {
+ if (i8042_aux_irq_registered)
+diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
+index 75516996db20..ded0c6f65c9f 100644
+--- a/drivers/input/serio/libps2.c
++++ b/drivers/input/serio/libps2.c
+@@ -56,19 +56,17 @@ EXPORT_SYMBOL(ps2_sendbyte);
+
+ void ps2_begin_command(struct ps2dev *ps2dev)
+ {
+- mutex_lock(&ps2dev->cmd_mutex);
++ struct mutex *m = ps2dev->serio->ps2_cmd_mutex ?: &ps2dev->cmd_mutex;
+
+- if (i8042_check_port_owner(ps2dev->serio))
+- i8042_lock_chip();
++ mutex_lock(m);
+ }
+ EXPORT_SYMBOL(ps2_begin_command);
+
+ void ps2_end_command(struct ps2dev *ps2dev)
+ {
+- if (i8042_check_port_owner(ps2dev->serio))
+- i8042_unlock_chip();
++ struct mutex *m = ps2dev->serio->ps2_cmd_mutex ?: &ps2dev->cmd_mutex;
+
+- mutex_unlock(&ps2dev->cmd_mutex);
++ mutex_unlock(m);
+ }
+ EXPORT_SYMBOL(ps2_end_command);
+
+diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
+index b257e46876d3..0f5e1820c92d 100644
+--- a/drivers/md/dm-flakey.c
++++ b/drivers/md/dm-flakey.c
+@@ -287,10 +287,16 @@ static int flakey_map(struct dm_target *ti, struct bio *bio)
+ pb->bio_submitted = true;
+
+ /*
+- * Map reads as normal.
++ * Map reads as normal only if corrupt_bio_byte set.
+ */
+- if (bio_data_dir(bio) == READ)
+- goto map_bio;
++ if (bio_data_dir(bio) == READ) {
++ /* If flags were specified, only corrupt those that match. */
++ if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) &&
++ all_corrupt_bio_flags_match(bio, fc))
++ goto map_bio;
++ else
++ return -EIO;
++ }
+
+ /*
+ * Drop writes?
+@@ -328,12 +334,13 @@ static int flakey_end_io(struct dm_target *ti, struct bio *bio, int error)
+
+ /*
+ * Corrupt successful READs while in down state.
+- * If flags were specified, only corrupt those that match.
+ */
+- if (fc->corrupt_bio_byte && !error && pb->bio_submitted &&
+- (bio_data_dir(bio) == READ) && (fc->corrupt_bio_rw == READ) &&
+- all_corrupt_bio_flags_match(bio, fc))
+- corrupt_bio_data(bio, fc);
++ if (!error && pb->bio_submitted && (bio_data_dir(bio) == READ)) {
++ if (fc->corrupt_bio_byte)
++ corrupt_bio_data(bio, fc);
++ else
++ return -EIO;
++ }
+
+ return error;
+ }
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index 1f37781f7765..87de9a0848b7 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -1200,8 +1200,14 @@ static void stop_queue(struct request_queue *q)
+ {
+ if (!q->mq_ops)
+ old_stop_queue(q);
+- else
++ else {
++ spin_lock_irq(q->queue_lock);
++ queue_flag_set(QUEUE_FLAG_STOPPED, q);
++ spin_unlock_irq(q->queue_lock);
++
++ blk_mq_cancel_requeue_work(q);
+ blk_mq_stop_hw_queues(q);
++ }
+ }
+
+ static void old_start_queue(struct request_queue *q)
+@@ -1218,8 +1224,10 @@ static void start_queue(struct request_queue *q)
+ {
+ if (!q->mq_ops)
+ old_start_queue(q);
+- else
++ else {
++ queue_flag_clear_unlocked(QUEUE_FLAG_STOPPED, q);
+ blk_mq_start_stopped_hw_queues(q, true);
++ }
+ }
+
+ static void dm_done(struct request *clone, int error, bool mapped)
+@@ -2139,7 +2147,7 @@ static void dm_request_fn(struct request_queue *q)
+ goto out;
+
+ delay_and_out:
+- blk_delay_queue(q, HZ / 100);
++ blk_delay_queue(q, 10);
+ out:
+ dm_put_live_table(md, srcu_idx);
+ }
+@@ -2731,6 +2739,17 @@ static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
+ }
+ dm_put_live_table(md, srcu_idx);
+
++ /*
++ * On suspend dm_stop_queue() handles stopping the blk-mq
++ * request_queue BUT: even though the hw_queues are marked
++ * BLK_MQ_S_STOPPED at that point there is still a race that
++ * is allowing block/blk-mq.c to call ->queue_rq against a
++ * hctx that it really shouldn't. The following check guards
++ * against this rarity (albeit _not_ race-free).
++ */
++ if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state)))
++ return BLK_MQ_RQ_QUEUE_BUSY;
++
+ if (ti->type->busy && ti->type->busy(ti))
+ return BLK_MQ_RQ_QUEUE_BUSY;
+
+@@ -3130,7 +3149,8 @@ static void unlock_fs(struct mapped_device *md)
+ * Caller must hold md->suspend_lock
+ */
+ static int __dm_suspend(struct mapped_device *md, struct dm_table *map,
+- unsigned suspend_flags, int interruptible)
++ unsigned suspend_flags, int interruptible,
++ int dmf_suspended_flag)
+ {
+ bool do_lockfs = suspend_flags & DM_SUSPEND_LOCKFS_FLAG;
+ bool noflush = suspend_flags & DM_SUSPEND_NOFLUSH_FLAG;
+@@ -3197,6 +3217,8 @@ static int __dm_suspend(struct mapped_device *md, struct dm_table *map,
+ * to finish.
+ */
+ r = dm_wait_for_completion(md, interruptible);
++ if (!r)
++ set_bit(dmf_suspended_flag, &md->flags);
+
+ if (noflush)
+ clear_bit(DMF_NOFLUSH_SUSPENDING, &md->flags);
+@@ -3258,12 +3280,10 @@ retry:
+
+ map = rcu_dereference_protected(md->map, lockdep_is_held(&md->suspend_lock));
+
+- r = __dm_suspend(md, map, suspend_flags, TASK_INTERRUPTIBLE);
++ r = __dm_suspend(md, map, suspend_flags, TASK_INTERRUPTIBLE, DMF_SUSPENDED);
+ if (r)
+ goto out_unlock;
+
+- set_bit(DMF_SUSPENDED, &md->flags);
+-
+ dm_table_postsuspend_targets(map);
+
+ out_unlock:
+@@ -3357,9 +3377,8 @@ static void __dm_internal_suspend(struct mapped_device *md, unsigned suspend_fla
+ * would require changing .presuspend to return an error -- avoid this
+ * until there is a need for more elaborate variants of internal suspend.
+ */
+- (void) __dm_suspend(md, map, suspend_flags, TASK_UNINTERRUPTIBLE);
+-
+- set_bit(DMF_SUSPENDED_INTERNALLY, &md->flags);
++ (void) __dm_suspend(md, map, suspend_flags, TASK_UNINTERRUPTIBLE,
++ DMF_SUSPENDED_INTERNALLY);
+
+ dm_table_postsuspend_targets(map);
+ }
+diff --git a/drivers/media/dvb-core/dvb_ringbuffer.c b/drivers/media/dvb-core/dvb_ringbuffer.c
+index 1100e98a7b1d..7df7fb3738a0 100644
+--- a/drivers/media/dvb-core/dvb_ringbuffer.c
++++ b/drivers/media/dvb-core/dvb_ringbuffer.c
+@@ -55,7 +55,13 @@ void dvb_ringbuffer_init(struct dvb_ringbuffer *rbuf, void *data, size_t len)
+
+ int dvb_ringbuffer_empty(struct dvb_ringbuffer *rbuf)
+ {
+- return (rbuf->pread==rbuf->pwrite);
++ /* smp_load_acquire() to load write pointer on reader side
++ * this pairs with smp_store_release() in dvb_ringbuffer_write(),
++ * dvb_ringbuffer_write_user(), or dvb_ringbuffer_reset()
++ *
++ * for memory barriers also see Documentation/circular-buffers.txt
++ */
++ return (rbuf->pread == smp_load_acquire(&rbuf->pwrite));
+ }
+
+
+@@ -64,7 +70,12 @@ ssize_t dvb_ringbuffer_free(struct dvb_ringbuffer *rbuf)
+ {
+ ssize_t free;
+
+- free = rbuf->pread - rbuf->pwrite;
++ /* ACCESS_ONCE() to load read pointer on writer side
++ * this pairs with smp_store_release() in dvb_ringbuffer_read(),
++ * dvb_ringbuffer_read_user(), dvb_ringbuffer_flush(),
++ * or dvb_ringbuffer_reset()
++ */
++ free = ACCESS_ONCE(rbuf->pread) - rbuf->pwrite;
+ if (free <= 0)
+ free += rbuf->size;
+ return free-1;
+@@ -76,7 +87,11 @@ ssize_t dvb_ringbuffer_avail(struct dvb_ringbuffer *rbuf)
+ {
+ ssize_t avail;
+
+- avail = rbuf->pwrite - rbuf->pread;
++ /* smp_load_acquire() to load write pointer on reader side
++ * this pairs with smp_store_release() in dvb_ringbuffer_write(),
++ * dvb_ringbuffer_write_user(), or dvb_ringbuffer_reset()
++ */
++ avail = smp_load_acquire(&rbuf->pwrite) - rbuf->pread;
+ if (avail < 0)
+ avail += rbuf->size;
+ return avail;
+@@ -86,14 +101,25 @@ ssize_t dvb_ringbuffer_avail(struct dvb_ringbuffer *rbuf)
+
+ void dvb_ringbuffer_flush(struct dvb_ringbuffer *rbuf)
+ {
+- rbuf->pread = rbuf->pwrite;
++ /* dvb_ringbuffer_flush() counts as read operation
++ * smp_load_acquire() to load write pointer
++ * smp_store_release() to update read pointer, this ensures that the
++ * correct pointer is visible for subsequent dvb_ringbuffer_free()
++ * calls on other cpu cores
++ */
++ smp_store_release(&rbuf->pread, smp_load_acquire(&rbuf->pwrite));
+ rbuf->error = 0;
+ }
+ EXPORT_SYMBOL(dvb_ringbuffer_flush);
+
+ void dvb_ringbuffer_reset(struct dvb_ringbuffer *rbuf)
+ {
+- rbuf->pread = rbuf->pwrite = 0;
++ /* dvb_ringbuffer_reset() counts as read and write operation
++ * smp_store_release() to update read pointer
++ */
++ smp_store_release(&rbuf->pread, 0);
++ /* smp_store_release() to update write pointer */
++ smp_store_release(&rbuf->pwrite, 0);
+ rbuf->error = 0;
+ }
+
+@@ -119,12 +145,17 @@ ssize_t dvb_ringbuffer_read_user(struct dvb_ringbuffer *rbuf, u8 __user *buf, si
+ return -EFAULT;
+ buf += split;
+ todo -= split;
+- rbuf->pread = 0;
++ /* smp_store_release() for read pointer update to ensure
++ * that buf is not overwritten until read is complete,
++ * this pairs with ACCESS_ONCE() in dvb_ringbuffer_free()
++ */
++ smp_store_release(&rbuf->pread, 0);
+ }
+ if (copy_to_user(buf, rbuf->data+rbuf->pread, todo))
+ return -EFAULT;
+
+- rbuf->pread = (rbuf->pread + todo) % rbuf->size;
++ /* smp_store_release() to update read pointer, see above */
++ smp_store_release(&rbuf->pread, (rbuf->pread + todo) % rbuf->size);
+
+ return len;
+ }
+@@ -139,11 +170,16 @@ void dvb_ringbuffer_read(struct dvb_ringbuffer *rbuf, u8 *buf, size_t len)
+ memcpy(buf, rbuf->data+rbuf->pread, split);
+ buf += split;
+ todo -= split;
+- rbuf->pread = 0;
++ /* smp_store_release() for read pointer update to ensure
++ * that buf is not overwritten until read is complete,
++ * this pairs with ACCESS_ONCE() in dvb_ringbuffer_free()
++ */
++ smp_store_release(&rbuf->pread, 0);
+ }
+ memcpy(buf, rbuf->data+rbuf->pread, todo);
+
+- rbuf->pread = (rbuf->pread + todo) % rbuf->size;
++ /* smp_store_release() to update read pointer, see above */
++ smp_store_release(&rbuf->pread, (rbuf->pread + todo) % rbuf->size);
+ }
+
+
+@@ -158,10 +194,16 @@ ssize_t dvb_ringbuffer_write(struct dvb_ringbuffer *rbuf, const u8 *buf, size_t
+ memcpy(rbuf->data+rbuf->pwrite, buf, split);
+ buf += split;
+ todo -= split;
+- rbuf->pwrite = 0;
++ /* smp_store_release() for write pointer update to ensure that
++ * written data is visible on other cpu cores before the pointer
++ * update, this pairs with smp_load_acquire() in
++ * dvb_ringbuffer_empty() or dvb_ringbuffer_avail()
++ */
++ smp_store_release(&rbuf->pwrite, 0);
+ }
+ memcpy(rbuf->data+rbuf->pwrite, buf, todo);
+- rbuf->pwrite = (rbuf->pwrite + todo) % rbuf->size;
++ /* smp_store_release() for write pointer update, see above */
++ smp_store_release(&rbuf->pwrite, (rbuf->pwrite + todo) % rbuf->size);
+
+ return len;
+ }
+@@ -181,12 +223,18 @@ ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
+ return len - todo;
+ buf += split;
+ todo -= split;
+- rbuf->pwrite = 0;
++ /* smp_store_release() for write pointer update to ensure that
++ * written data is visible on other cpu cores before the pointer
++ * update, this pairs with smp_load_acquire() in
++ * dvb_ringbuffer_empty() or dvb_ringbuffer_avail()
++ */
++ smp_store_release(&rbuf->pwrite, 0);
+ }
+ status = copy_from_user(rbuf->data+rbuf->pwrite, buf, todo);
+ if (status)
+ return len - todo;
+- rbuf->pwrite = (rbuf->pwrite + todo) % rbuf->size;
++ /* smp_store_release() for write pointer update, see above */
++ smp_store_release(&rbuf->pwrite, (rbuf->pwrite + todo) % rbuf->size);
+
+ return len;
+ }
+diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c
+index 8333fbc2fe96..835dbb8f5970 100644
+--- a/drivers/media/platform/s5p-mfc/s5p_mfc.c
++++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c
+@@ -1022,6 +1022,11 @@ static int match_child(struct device *dev, void *data)
+ return !strcmp(dev_name(dev), (char *)data);
+ }
+
++static void s5p_mfc_memdev_release(struct device *dev)
++{
++ dma_release_declared_memory(dev);
++}
++
+ static void *mfc_get_drv_data(struct platform_device *pdev);
+
+ static int s5p_mfc_alloc_memdevs(struct s5p_mfc_dev *dev)
+@@ -1034,6 +1039,9 @@ static int s5p_mfc_alloc_memdevs(struct s5p_mfc_dev *dev)
+ mfc_err("Not enough memory\n");
+ return -ENOMEM;
+ }
++
++ dev_set_name(dev->mem_dev_l, "%s", "s5p-mfc-l");
++ dev->mem_dev_l->release = s5p_mfc_memdev_release;
+ device_initialize(dev->mem_dev_l);
+ of_property_read_u32_array(dev->plat_dev->dev.of_node,
+ "samsung,mfc-l", mem_info, 2);
+@@ -1051,6 +1059,9 @@ static int s5p_mfc_alloc_memdevs(struct s5p_mfc_dev *dev)
+ mfc_err("Not enough memory\n");
+ return -ENOMEM;
+ }
++
++ dev_set_name(dev->mem_dev_r, "%s", "s5p-mfc-r");
++ dev->mem_dev_r->release = s5p_mfc_memdev_release;
+ device_initialize(dev->mem_dev_r);
+ of_property_read_u32_array(dev->plat_dev->dev.of_node,
+ "samsung,mfc-r", mem_info, 2);
+diff --git a/drivers/media/rc/ir-rc5-decoder.c b/drivers/media/rc/ir-rc5-decoder.c
+index 84fa6e9b59a1..67314c034cdb 100644
+--- a/drivers/media/rc/ir-rc5-decoder.c
++++ b/drivers/media/rc/ir-rc5-decoder.c
+@@ -29,7 +29,7 @@
+ #define RC5_BIT_START (1 * RC5_UNIT)
+ #define RC5_BIT_END (1 * RC5_UNIT)
+ #define RC5X_SPACE (4 * RC5_UNIT)
+-#define RC5_TRAILER (10 * RC5_UNIT) /* In reality, approx 100 */
++#define RC5_TRAILER (6 * RC5_UNIT) /* In reality, approx 100 */
+
+ enum rc5_state {
+ STATE_INACTIVE,
+diff --git a/drivers/media/usb/usbtv/usbtv-audio.c b/drivers/media/usb/usbtv/usbtv-audio.c
+index 78c12d22dfbb..5dab02432e82 100644
+--- a/drivers/media/usb/usbtv/usbtv-audio.c
++++ b/drivers/media/usb/usbtv/usbtv-audio.c
+@@ -278,6 +278,9 @@ static void snd_usbtv_trigger(struct work_struct *work)
+ {
+ struct usbtv *chip = container_of(work, struct usbtv, snd_trigger);
+
++ if (!chip->snd)
++ return;
++
+ if (atomic_read(&chip->snd_stream))
+ usbtv_audio_start(chip);
+ else
+@@ -378,6 +381,8 @@ err:
+
+ void usbtv_audio_free(struct usbtv *usbtv)
+ {
++ cancel_work_sync(&usbtv->snd_trigger);
++
+ if (usbtv->snd && usbtv->udev) {
+ snd_card_free(usbtv->snd);
+ usbtv->snd = NULL;
+diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
+index 12e324319573..798761f2252f 100644
+--- a/drivers/mfd/qcom_rpm.c
++++ b/drivers/mfd/qcom_rpm.c
+@@ -34,7 +34,13 @@ struct qcom_rpm_resource {
+ struct qcom_rpm_data {
+ u32 version;
+ const struct qcom_rpm_resource *resource_table;
+- unsigned n_resources;
++ unsigned int n_resources;
++ unsigned int req_ctx_off;
++ unsigned int req_sel_off;
++ unsigned int ack_ctx_off;
++ unsigned int ack_sel_off;
++ unsigned int req_sel_size;
++ unsigned int ack_sel_size;
+ };
+
+ struct qcom_rpm {
+@@ -61,11 +67,7 @@ struct qcom_rpm {
+
+ #define RPM_REQUEST_TIMEOUT (5 * HZ)
+
+-#define RPM_REQUEST_CONTEXT 3
+-#define RPM_REQ_SELECT 11
+-#define RPM_ACK_CONTEXT 15
+-#define RPM_ACK_SELECTOR 23
+-#define RPM_SELECT_SIZE 7
++#define RPM_MAX_SEL_SIZE 7
+
+ #define RPM_NOTIFICATION BIT(30)
+ #define RPM_REJECTED BIT(31)
+@@ -156,6 +158,12 @@ static const struct qcom_rpm_data apq8064_template = {
+ .version = 3,
+ .resource_table = apq8064_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
++ .req_ctx_off = 3,
++ .req_sel_off = 11,
++ .ack_ctx_off = 15,
++ .ack_sel_off = 23,
++ .req_sel_size = 4,
++ .ack_sel_size = 7,
+ };
+
+ static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
+@@ -239,6 +247,12 @@ static const struct qcom_rpm_data msm8660_template = {
+ .version = 2,
+ .resource_table = msm8660_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
++ .req_ctx_off = 3,
++ .req_sel_off = 11,
++ .ack_ctx_off = 19,
++ .ack_sel_off = 27,
++ .req_sel_size = 7,
++ .ack_sel_size = 7,
+ };
+
+ static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
+@@ -321,6 +335,12 @@ static const struct qcom_rpm_data msm8960_template = {
+ .version = 3,
+ .resource_table = msm8960_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
++ .req_ctx_off = 3,
++ .req_sel_off = 11,
++ .ack_ctx_off = 15,
++ .ack_sel_off = 23,
++ .req_sel_size = 4,
++ .ack_sel_size = 7,
+ };
+
+ static const struct qcom_rpm_resource ipq806x_rpm_resource_table[] = {
+@@ -361,6 +381,12 @@ static const struct qcom_rpm_data ipq806x_template = {
+ .version = 3,
+ .resource_table = ipq806x_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(ipq806x_rpm_resource_table),
++ .req_ctx_off = 3,
++ .req_sel_off = 11,
++ .ack_ctx_off = 15,
++ .ack_sel_off = 23,
++ .req_sel_size = 4,
++ .ack_sel_size = 7,
+ };
+
+ static const struct of_device_id qcom_rpm_of_match[] = {
+@@ -379,7 +405,7 @@ int qcom_rpm_write(struct qcom_rpm *rpm,
+ {
+ const struct qcom_rpm_resource *res;
+ const struct qcom_rpm_data *data = rpm->data;
+- u32 sel_mask[RPM_SELECT_SIZE] = { 0 };
++ u32 sel_mask[RPM_MAX_SEL_SIZE] = { 0 };
+ int left;
+ int ret = 0;
+ int i;
+@@ -397,12 +423,12 @@ int qcom_rpm_write(struct qcom_rpm *rpm,
+ writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
+
+ bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
+- for (i = 0; i < ARRAY_SIZE(sel_mask); i++) {
++ for (i = 0; i < rpm->data->req_sel_size; i++) {
+ writel_relaxed(sel_mask[i],
+- RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i));
++ RPM_CTRL_REG(rpm, rpm->data->req_sel_off + i));
+ }
+
+- writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT));
++ writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, rpm->data->req_ctx_off));
+
+ reinit_completion(&rpm->ack);
+ regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
+@@ -425,10 +451,11 @@ static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
+ u32 ack;
+ int i;
+
+- ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
+- for (i = 0; i < RPM_SELECT_SIZE; i++)
+- writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i));
+- writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
++ ack = readl_relaxed(RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off));
++ for (i = 0; i < rpm->data->ack_sel_size; i++)
++ writel_relaxed(0,
++ RPM_CTRL_REG(rpm, rpm->data->ack_sel_off + i));
++ writel(0, RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off));
+
+ if (ack & RPM_NOTIFICATION) {
+ dev_warn(rpm->dev, "ignoring notification!\n");
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index c2e1232cd45c..fa5cd51cba38 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -2441,7 +2441,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
+ int cached = writelen > bytes && page != blockmask;
+ uint8_t *wbuf = buf;
+ int use_bufpoi;
+- int part_pagewr = (column || writelen < (mtd->writesize - 1));
++ int part_pagewr = (column || writelen < mtd->writesize);
+
+ if (part_pagewr)
+ use_bufpoi = 1;
+diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
+index b7f824d5ee88..9fd4f7838080 100644
+--- a/drivers/mtd/ubi/build.c
++++ b/drivers/mtd/ubi/build.c
+@@ -887,7 +887,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
+ for (i = 0; i < UBI_MAX_DEVICES; i++) {
+ ubi = ubi_devices[i];
+ if (ubi && mtd->index == ubi->mtd->index) {
+- ubi_err(ubi, "mtd%d is already attached to ubi%d",
++ pr_err("ubi: mtd%d is already attached to ubi%d",
+ mtd->index, i);
+ return -EEXIST;
+ }
+@@ -902,7 +902,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
+ * no sense to attach emulated MTD devices, so we prohibit this.
+ */
+ if (mtd->type == MTD_UBIVOLUME) {
+- ubi_err(ubi, "refuse attaching mtd%d - it is already emulated on top of UBI",
++ pr_err("ubi: refuse attaching mtd%d - it is already emulated on top of UBI",
+ mtd->index);
+ return -EINVAL;
+ }
+@@ -913,7 +913,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
+ if (!ubi_devices[ubi_num])
+ break;
+ if (ubi_num == UBI_MAX_DEVICES) {
+- ubi_err(ubi, "only %d UBI devices may be created",
++ pr_err("ubi: only %d UBI devices may be created",
+ UBI_MAX_DEVICES);
+ return -ENFILE;
+ }
+@@ -923,7 +923,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
+
+ /* Make sure ubi_num is not busy */
+ if (ubi_devices[ubi_num]) {
+- ubi_err(ubi, "already exists");
++ pr_err("ubi: ubi%i already exists", ubi_num);
+ return -EEXIST;
+ }
+ }
+@@ -1005,6 +1005,9 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
+ goto out_detach;
+ }
+
++ /* Make device "available" before it becomes accessible via sysfs */
++ ubi_devices[ubi_num] = ubi;
++
+ err = uif_init(ubi, &ref);
+ if (err)
+ goto out_detach;
+@@ -1049,7 +1052,6 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
+ wake_up_process(ubi->bgt_thread);
+ spin_unlock(&ubi->wl_lock);
+
+- ubi_devices[ubi_num] = ubi;
+ ubi_notify_all(ubi, UBI_VOLUME_ADDED, NULL);
+ return ubi_num;
+
+@@ -1060,6 +1062,7 @@ out_uif:
+ ubi_assert(ref);
+ uif_close(ubi);
+ out_detach:
++ ubi_devices[ubi_num] = NULL;
+ ubi_wl_close(ubi);
+ ubi_free_internal_volumes(ubi);
+ vfree(ubi->vtbl);
+diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
+index ff4d97848d1c..812ecf2d253a 100644
+--- a/drivers/mtd/ubi/vmt.c
++++ b/drivers/mtd/ubi/vmt.c
+@@ -536,13 +536,6 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
+ spin_unlock(&ubi->volumes_lock);
+ }
+
+- /* Change volume table record */
+- vtbl_rec = ubi->vtbl[vol_id];
+- vtbl_rec.reserved_pebs = cpu_to_be32(reserved_pebs);
+- err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
+- if (err)
+- goto out_acc;
+-
+ if (pebs < 0) {
+ for (i = 0; i < -pebs; i++) {
+ err = ubi_eba_unmap_leb(ubi, vol, reserved_pebs + i);
+@@ -560,6 +553,24 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
+ spin_unlock(&ubi->volumes_lock);
+ }
+
++ /*
++ * When we shrink a volume we have to flush all pending (erase) work.
++ * Otherwise it can happen that upon next attach UBI finds a LEB with
++ * lnum > highest_lnum and refuses to attach.
++ */
++ if (pebs < 0) {
++ err = ubi_wl_flush(ubi, vol_id, UBI_ALL);
++ if (err)
++ goto out_acc;
++ }
++
++ /* Change volume table record */
++ vtbl_rec = ubi->vtbl[vol_id];
++ vtbl_rec.reserved_pebs = cpu_to_be32(reserved_pebs);
++ err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
++ if (err)
++ goto out_acc;
++
+ vol->reserved_pebs = reserved_pebs;
+ if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
+ vol->used_ebs = reserved_pebs;
+diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
+index 5db25e46a962..5dbc1744eba5 100644
+--- a/drivers/net/usb/cdc_ncm.c
++++ b/drivers/net/usb/cdc_ncm.c
+@@ -858,6 +858,13 @@ advance:
+ if (cdc_ncm_init(dev))
+ goto error2;
+
++ /* Some firmwares need a pause here or they will silently fail
++ * to set up the interface properly. This value was decided
++ * empirically on a Sierra Wireless MC7455 running 02.08.02.00
++ * firmware.
++ */
++ usleep_range(10000, 20000);
++
+ /* configure data interface */
+ temp = usb_set_interface(dev->udev, iface_no, data_altsetting);
+ if (temp) {
+diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c
+index 9faf69875fab..2babc39f66a7 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/drv.c
++++ b/drivers/net/wireless/iwlwifi/pcie/drv.c
+@@ -422,6 +422,7 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
+ /* 8000 Series */
+ {IWL_PCI_DEVICE(0x24F3, 0x0010, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x1010, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x10B0, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0130, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x1130, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0132, iwl8260_2ac_cfg)},
+@@ -444,6 +445,8 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
+ {IWL_PCI_DEVICE(0x24F4, 0xD030, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0xC050, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0xD050, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0xD0B0, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0xB0B0, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x8010, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x8110, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x9010, iwl8260_2ac_cfg)},
+diff --git a/drivers/of/base.c b/drivers/of/base.c
+index 5ed97246c2e7..20f0b00dda05 100644
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -112,6 +112,7 @@ static ssize_t of_node_property_read(struct file *filp, struct kobject *kobj,
+ return memory_read_from_buffer(buf, count, &offset, pp->value, pp->length);
+ }
+
++/* always return newly allocated name, caller must free after use */
+ static const char *safe_name(struct kobject *kobj, const char *orig_name)
+ {
+ const char *name = orig_name;
+@@ -126,9 +127,12 @@ static const char *safe_name(struct kobject *kobj, const char *orig_name)
+ name = kasprintf(GFP_KERNEL, "%s#%i", orig_name, ++i);
+ }
+
+- if (name != orig_name)
++ if (name == orig_name) {
++ name = kstrdup(orig_name, GFP_KERNEL);
++ } else {
+ pr_warn("device-tree: Duplicate name in %s, renamed to \"%s\"\n",
+ kobject_name(kobj), name);
++ }
+ return name;
+ }
+
+@@ -159,6 +163,7 @@ int __of_add_property_sysfs(struct device_node *np, struct property *pp)
+ int __of_attach_node_sysfs(struct device_node *np)
+ {
+ const char *name;
++ struct kobject *parent;
+ struct property *pp;
+ int rc;
+
+@@ -171,15 +176,16 @@ int __of_attach_node_sysfs(struct device_node *np)
+ np->kobj.kset = of_kset;
+ if (!np->parent) {
+ /* Nodes without parents are new top level trees */
+- rc = kobject_add(&np->kobj, NULL, "%s",
+- safe_name(&of_kset->kobj, "base"));
++ name = safe_name(&of_kset->kobj, "base");
++ parent = NULL;
+ } else {
+ name = safe_name(&np->parent->kobj, kbasename(np->full_name));
+- if (!name || !name[0])
+- return -EINVAL;
+-
+- rc = kobject_add(&np->kobj, &np->parent->kobj, "%s", name);
++ parent = &np->parent->kobj;
+ }
++ if (!name)
++ return -ENOMEM;
++ rc = kobject_add(&np->kobj, parent, "%s", name);
++ kfree(name);
+ if (rc)
+ return rc;
+
+@@ -1756,6 +1762,12 @@ int __of_remove_property(struct device_node *np, struct property *prop)
+ return 0;
+ }
+
++void __of_sysfs_remove_bin_file(struct device_node *np, struct property *prop)
++{
++ sysfs_remove_bin_file(&np->kobj, &prop->attr);
++ kfree(prop->attr.attr.name);
++}
++
+ void __of_remove_property_sysfs(struct device_node *np, struct property *prop)
+ {
+ if (!IS_ENABLED(CONFIG_SYSFS))
+@@ -1763,7 +1775,7 @@ void __of_remove_property_sysfs(struct device_node *np, struct property *prop)
+
+ /* at early boot, bail here and defer setup to of_init() */
+ if (of_kset && of_node_is_attached(np))
+- sysfs_remove_bin_file(&np->kobj, &prop->attr);
++ __of_sysfs_remove_bin_file(np, prop);
+ }
+
+ /**
+@@ -1833,7 +1845,7 @@ void __of_update_property_sysfs(struct device_node *np, struct property *newprop
+ return;
+
+ if (oldprop)
+- sysfs_remove_bin_file(&np->kobj, &oldprop->attr);
++ __of_sysfs_remove_bin_file(np, oldprop);
+ __of_add_property_sysfs(np, newprop);
+ }
+
+diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
+index 53826b84e0ec..2d72ddcf534f 100644
+--- a/drivers/of/dynamic.c
++++ b/drivers/of/dynamic.c
+@@ -55,7 +55,7 @@ void __of_detach_node_sysfs(struct device_node *np)
+ /* only remove properties if on sysfs */
+ if (of_node_is_attached(np)) {
+ for_each_property_of_node(np, pp)
+- sysfs_remove_bin_file(&np->kobj, &pp->attr);
++ __of_sysfs_remove_bin_file(np, pp);
+ kobject_del(&np->kobj);
+ }
+
+diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
+index 8e882e706cd8..46ddbee22ce3 100644
+--- a/drivers/of/of_private.h
++++ b/drivers/of/of_private.h
+@@ -81,6 +81,9 @@ extern int __of_attach_node_sysfs(struct device_node *np);
+ extern void __of_detach_node(struct device_node *np);
+ extern void __of_detach_node_sysfs(struct device_node *np);
+
++extern void __of_sysfs_remove_bin_file(struct device_node *np,
++ struct property *prop);
++
+ /* iterators for transactions, used for overlays */
+ /* forward iterator */
+ #define for_each_transaction_entry(_oft, _te) \
+diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
+index 4a6933f02cd0..ae12c0317645 100644
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -3108,13 +3108,15 @@ static void quirk_no_bus_reset(struct pci_dev *dev)
+ }
+
+ /*
+- * Atheros AR93xx chips do not behave after a bus reset. The device will
+- * throw a Link Down error on AER-capable systems and regardless of AER,
+- * config space of the device is never accessible again and typically
+- * causes the system to hang or reset when access is attempted.
++ * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
++ * The device will throw a Link Down error on AER-capable systems and
++ * regardless of AER, config space of the device is never accessible again
++ * and typically causes the system to hang or reset when access is attempted.
+ * http://www.spinics.net/lists/linux-pci/msg34797.html
+ */
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
+
+ static void quirk_no_pm_reset(struct pci_dev *dev)
+ {
+diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c
+index 732ff757a95f..688f6b08c70f 100644
+--- a/drivers/pinctrl/intel/pinctrl-cherryview.c
++++ b/drivers/pinctrl/intel/pinctrl-cherryview.c
+@@ -160,7 +160,6 @@ struct chv_pin_context {
+ * @pctldev: Pointer to the pin controller device
+ * @chip: GPIO chip in this pin controller
+ * @regs: MMIO registers
+- * @lock: Lock to serialize register accesses
+ * @intr_lines: Stores mapping between 16 HW interrupt wires and GPIO
+ * offset (in GPIO number space)
+ * @community: Community this pinctrl instance represents
+@@ -174,7 +173,6 @@ struct chv_pinctrl {
+ struct pinctrl_dev *pctldev;
+ struct gpio_chip chip;
+ void __iomem *regs;
+- spinlock_t lock;
+ unsigned intr_lines[16];
+ const struct chv_community *community;
+ u32 saved_intmask;
+@@ -659,6 +657,17 @@ static const struct chv_community *chv_communities[] = {
+ &southeast_community,
+ };
+
++/*
++ * Lock to serialize register accesses
++ *
++ * Due to a silicon issue, a shared lock must be used to prevent
++ * concurrent accesses across the 4 GPIO controllers.
++ *
++ * See Intel Atom Z8000 Processor Series Specification Update (Rev. 005),
++ * errata #CHT34, for further information.
++ */
++static DEFINE_RAW_SPINLOCK(chv_lock);
++
+ static void __iomem *chv_padreg(struct chv_pinctrl *pctrl, unsigned offset,
+ unsigned reg)
+ {
+@@ -720,13 +729,13 @@ static void chv_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
+ u32 ctrl0, ctrl1;
+ bool locked;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+
+ ctrl0 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0));
+ ctrl1 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL1));
+ locked = chv_pad_locked(pctrl, offset);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ if (ctrl0 & CHV_PADCTRL0_GPIOEN) {
+ seq_puts(s, "GPIO ");
+@@ -789,14 +798,14 @@ static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned function,
+
+ grp = &pctrl->community->groups[group];
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+
+ /* Check first that the pad is not locked */
+ for (i = 0; i < grp->npins; i++) {
+ if (chv_pad_locked(pctrl, grp->pins[i])) {
+ dev_warn(pctrl->dev, "unable to set mode for locked pin %u\n",
+ grp->pins[i]);
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ return -EBUSY;
+ }
+ }
+@@ -839,7 +848,7 @@ static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned function,
+ pin, altfunc->mode, altfunc->invert_oe ? "" : "not ");
+ }
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ return 0;
+ }
+@@ -853,13 +862,13 @@ static int chv_gpio_request_enable(struct pinctrl_dev *pctldev,
+ void __iomem *reg;
+ u32 value;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+
+ if (chv_pad_locked(pctrl, offset)) {
+ value = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0));
+ if (!(value & CHV_PADCTRL0_GPIOEN)) {
+ /* Locked so cannot enable */
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ return -EBUSY;
+ }
+ } else {
+@@ -899,7 +908,7 @@ static int chv_gpio_request_enable(struct pinctrl_dev *pctldev,
+ chv_writel(value, reg);
+ }
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ return 0;
+ }
+@@ -913,13 +922,13 @@ static void chv_gpio_disable_free(struct pinctrl_dev *pctldev,
+ void __iomem *reg;
+ u32 value;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+
+ reg = chv_padreg(pctrl, offset, CHV_PADCTRL0);
+ value = readl(reg) & ~CHV_PADCTRL0_GPIOEN;
+ chv_writel(value, reg);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ }
+
+ static int chv_gpio_set_direction(struct pinctrl_dev *pctldev,
+@@ -931,7 +940,7 @@ static int chv_gpio_set_direction(struct pinctrl_dev *pctldev,
+ unsigned long flags;
+ u32 ctrl0;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+
+ ctrl0 = readl(reg) & ~CHV_PADCTRL0_GPIOCFG_MASK;
+ if (input)
+@@ -940,7 +949,7 @@ static int chv_gpio_set_direction(struct pinctrl_dev *pctldev,
+ ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPO << CHV_PADCTRL0_GPIOCFG_SHIFT;
+ chv_writel(ctrl0, reg);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ return 0;
+ }
+@@ -965,10 +974,10 @@ static int chv_config_get(struct pinctrl_dev *pctldev, unsigned pin,
+ u16 arg = 0;
+ u32 term;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+ ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ ctrl1 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1));
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ term = (ctrl0 & CHV_PADCTRL0_TERM_MASK) >> CHV_PADCTRL0_TERM_SHIFT;
+
+@@ -1042,7 +1051,7 @@ static int chv_config_set_pull(struct chv_pinctrl *pctrl, unsigned pin,
+ unsigned long flags;
+ u32 ctrl0, pull;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+ ctrl0 = readl(reg);
+
+ switch (param) {
+@@ -1065,7 +1074,7 @@ static int chv_config_set_pull(struct chv_pinctrl *pctrl, unsigned pin,
+ pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT;
+ break;
+ default:
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ return -EINVAL;
+ }
+
+@@ -1083,7 +1092,7 @@ static int chv_config_set_pull(struct chv_pinctrl *pctrl, unsigned pin,
+ pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT;
+ break;
+ default:
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ return -EINVAL;
+ }
+
+@@ -1091,12 +1100,12 @@ static int chv_config_set_pull(struct chv_pinctrl *pctrl, unsigned pin,
+ break;
+
+ default:
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ return -EINVAL;
+ }
+
+ chv_writel(ctrl0, reg);
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ return 0;
+ }
+@@ -1169,9 +1178,12 @@ static int chv_gpio_get(struct gpio_chip *chip, unsigned offset)
+ {
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
+ int pin = chv_gpio_offset_to_pin(pctrl, offset);
++ unsigned long flags;
+ u32 ctrl0, cfg;
+
++ raw_spin_lock_irqsave(&chv_lock, flags);
+ ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK;
+ cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT;
+@@ -1189,7 +1201,7 @@ static void chv_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+ void __iomem *reg;
+ u32 ctrl0;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+
+ reg = chv_padreg(pctrl, pin, CHV_PADCTRL0);
+ ctrl0 = readl(reg);
+@@ -1201,7 +1213,7 @@ static void chv_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+
+ chv_writel(ctrl0, reg);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ }
+
+ static int chv_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+@@ -1209,8 +1221,11 @@ static int chv_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
+ unsigned pin = chv_gpio_offset_to_pin(pctrl, offset);
+ u32 ctrl0, direction;
++ unsigned long flags;
+
++ raw_spin_lock_irqsave(&chv_lock, flags);
+ ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ direction = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK;
+ direction >>= CHV_PADCTRL0_GPIOCFG_SHIFT;
+@@ -1248,14 +1263,14 @@ static void chv_gpio_irq_ack(struct irq_data *d)
+ int pin = chv_gpio_offset_to_pin(pctrl, irqd_to_hwirq(d));
+ u32 intr_line;
+
+- spin_lock(&pctrl->lock);
++ raw_spin_lock(&chv_lock);
+
+ intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ intr_line &= CHV_PADCTRL0_INTSEL_MASK;
+ intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT;
+ chv_writel(BIT(intr_line), pctrl->regs + CHV_INTSTAT);
+
+- spin_unlock(&pctrl->lock);
++ raw_spin_unlock(&chv_lock);
+ }
+
+ static void chv_gpio_irq_mask_unmask(struct irq_data *d, bool mask)
+@@ -1266,7 +1281,7 @@ static void chv_gpio_irq_mask_unmask(struct irq_data *d, bool mask)
+ u32 value, intr_line;
+ unsigned long flags;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+
+ intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ intr_line &= CHV_PADCTRL0_INTSEL_MASK;
+@@ -1279,7 +1294,7 @@ static void chv_gpio_irq_mask_unmask(struct irq_data *d, bool mask)
+ value |= BIT(intr_line);
+ chv_writel(value, pctrl->regs + CHV_INTMASK);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ }
+
+ static void chv_gpio_irq_mask(struct irq_data *d)
+@@ -1313,6 +1328,7 @@ static unsigned chv_gpio_irq_startup(struct irq_data *d)
+ unsigned long flags;
+ u32 intsel, value;
+
++ raw_spin_lock_irqsave(&chv_lock, flags);
+ intsel = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ intsel &= CHV_PADCTRL0_INTSEL_MASK;
+ intsel >>= CHV_PADCTRL0_INTSEL_SHIFT;
+@@ -1323,12 +1339,11 @@ static unsigned chv_gpio_irq_startup(struct irq_data *d)
+ else
+ handler = handle_edge_irq;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
+ if (!pctrl->intr_lines[intsel]) {
+ __irq_set_handler_locked(d->irq, handler);
+ pctrl->intr_lines[intsel] = offset;
+ }
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+ }
+
+ chv_gpio_irq_unmask(d);
+@@ -1344,7 +1359,7 @@ static int chv_gpio_irq_type(struct irq_data *d, unsigned type)
+ unsigned long flags;
+ u32 value;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&chv_lock, flags);
+
+ /*
+ * Pins which can be used as shared interrupt are configured in
+@@ -1393,7 +1408,7 @@ static int chv_gpio_irq_type(struct irq_data *d, unsigned type)
+ else if (type & IRQ_TYPE_LEVEL_MASK)
+ __irq_set_handler_locked(d->irq, handle_level_irq);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+ return 0;
+ }
+@@ -1505,7 +1520,6 @@ static int chv_pinctrl_probe(struct platform_device *pdev)
+ if (i == ARRAY_SIZE(chv_communities))
+ return -ENODEV;
+
+- spin_lock_init(&pctrl->lock);
+ pctrl->dev = &pdev->dev;
+
+ #ifdef CONFIG_PM_SLEEP
+diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
+index fb4dd7b3ee71..af2046c87806 100644
+--- a/drivers/platform/x86/hp-wmi.c
++++ b/drivers/platform/x86/hp-wmi.c
+@@ -723,6 +723,11 @@ static int __init hp_wmi_rfkill_setup(struct platform_device *device)
+ if (err)
+ return err;
+
++ err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, &wireless,
++ sizeof(wireless), 0);
++ if (err)
++ return err;
++
+ if (wireless & 0x1) {
+ wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
+ RFKILL_TYPE_WLAN,
+@@ -910,7 +915,7 @@ static int __init hp_wmi_bios_setup(struct platform_device *device)
+ gps_rfkill = NULL;
+ rfkill2_count = 0;
+
+- if (hp_wmi_bios_2009_later() || hp_wmi_rfkill_setup(device))
++ if (hp_wmi_rfkill_setup(device))
+ hp_wmi_rfkill2_setup(device);
+
+ err = device_create_file(&device->dev, &dev_attr_display);
+diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
+index c5a2523b0185..463003d2529c 100644
+--- a/drivers/rtc/rtc-s3c.c
++++ b/drivers/rtc/rtc-s3c.c
+@@ -149,12 +149,14 @@ static int s3c_rtc_setfreq(struct s3c_rtc *info, int freq)
+ if (!is_power_of_2(freq))
+ return -EINVAL;
+
++ s3c_rtc_enable_clk(info);
+ spin_lock_irq(&info->pie_lock);
+
+ if (info->data->set_freq)
+ info->data->set_freq(info, freq);
+
+ spin_unlock_irq(&info->pie_lock);
++ s3c_rtc_disable_clk(info);
+
+ return 0;
+ }
+diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
+index f089082c00e1..e6b77049c756 100644
+--- a/drivers/spi/spi-pxa2xx.c
++++ b/drivers/spi/spi-pxa2xx.c
+@@ -477,7 +477,14 @@ static void reset_sccr1(struct driver_data *drv_data)
+ u32 sccr1_reg;
+
+ sccr1_reg = pxa2xx_spi_read(drv_data, SSCR1) & ~drv_data->int_cr1;
+- sccr1_reg &= ~SSCR1_RFT;
++ switch (drv_data->ssp_type) {
++ case QUARK_X1000_SSP:
++ sccr1_reg &= ~QUARK_X1000_SSCR1_RFT;
++ break;
++ default:
++ sccr1_reg &= ~SSCR1_RFT;
++ break;
++ }
+ sccr1_reg |= chip->threshold;
+ pxa2xx_spi_write(drv_data, SSCR1, sccr1_reg);
+ }
+diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
+index b614f272b5f4..851fcfa98068 100644
+--- a/drivers/staging/iio/accel/sca3000_core.c
++++ b/drivers/staging/iio/accel/sca3000_core.c
+@@ -595,7 +595,7 @@ static ssize_t sca3000_read_frequency(struct device *dev,
+ goto error_ret_mut;
+ ret = sca3000_read_ctrl_reg(st, SCA3000_REG_CTRL_SEL_OUT_CTRL);
+ mutex_unlock(&st->lock);
+- if (ret)
++ if (ret < 0)
+ goto error_ret;
+ val = ret;
+ if (base_freq > 0)
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 6f50e9d958de..6fad3e9fd389 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -500,7 +500,8 @@ static void iscsit_aborted_task(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
+ bool scsi_cmd = (cmd->iscsi_opcode == ISCSI_OP_SCSI_CMD);
+
+ spin_lock_bh(&conn->cmd_lock);
+- if (!list_empty(&cmd->i_conn_node))
++ if (!list_empty(&cmd->i_conn_node) &&
++ !(cmd->se_cmd.transport_state & CMD_T_FABRIC_STOP))
+ list_del_init(&cmd->i_conn_node);
+ spin_unlock_bh(&conn->cmd_lock);
+
+@@ -4215,6 +4216,7 @@ transport_err:
+
+ static void iscsit_release_commands_from_conn(struct iscsi_conn *conn)
+ {
++ LIST_HEAD(tmp_list);
+ struct iscsi_cmd *cmd = NULL, *cmd_tmp = NULL;
+ struct iscsi_session *sess = conn->sess;
+ /*
+@@ -4223,18 +4225,26 @@ static void iscsit_release_commands_from_conn(struct iscsi_conn *conn)
+ * has been reset -> returned sleeping pre-handler state.
+ */
+ spin_lock_bh(&conn->cmd_lock);
+- list_for_each_entry_safe(cmd, cmd_tmp, &conn->conn_cmd_list, i_conn_node) {
++ list_splice_init(&conn->conn_cmd_list, &tmp_list);
+
++ list_for_each_entry(cmd, &tmp_list, i_conn_node) {
++ struct se_cmd *se_cmd = &cmd->se_cmd;
++
++ if (se_cmd->se_tfo != NULL) {
++ spin_lock(&se_cmd->t_state_lock);
++ se_cmd->transport_state |= CMD_T_FABRIC_STOP;
++ spin_unlock(&se_cmd->t_state_lock);
++ }
++ }
++ spin_unlock_bh(&conn->cmd_lock);
++
++ list_for_each_entry_safe(cmd, cmd_tmp, &tmp_list, i_conn_node) {
+ list_del_init(&cmd->i_conn_node);
+- spin_unlock_bh(&conn->cmd_lock);
+
+ iscsit_increment_maxcmdsn(cmd, sess);
+-
+ iscsit_free_cmd(cmd, true);
+
+- spin_lock_bh(&conn->cmd_lock);
+ }
+- spin_unlock_bh(&conn->cmd_lock);
+ }
+
+ static void iscsit_stop_timers_for_cmds(
+diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
+index 39654e917cd8..e929205e28c6 100644
+--- a/drivers/target/iscsi/iscsi_target_login.c
++++ b/drivers/target/iscsi/iscsi_target_login.c
+@@ -1415,8 +1415,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
+ }
+ login->zero_tsih = zero_tsih;
+
+- conn->sess->se_sess->sup_prot_ops =
+- conn->conn_transport->iscsit_get_sup_prot_ops(conn);
++ if (conn->sess)
++ conn->sess->se_sess->sup_prot_ops =
++ conn->conn_transport->iscsit_get_sup_prot_ops(conn);
+
+ tpg = conn->tpg;
+ if (!tpg) {
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index e8848e7fe5d4..7580abe7cb45 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -2531,15 +2531,9 @@ static void target_release_cmd_kref(struct kref *kref)
+ struct se_session *se_sess = se_cmd->se_sess;
+ bool fabric_stop;
+
+- if (list_empty(&se_cmd->se_cmd_list)) {
+- spin_unlock(&se_sess->sess_cmd_lock);
+- target_free_cmd_mem(se_cmd);
+- se_cmd->se_tfo->release_cmd(se_cmd);
+- return;
+- }
+-
+ spin_lock(&se_cmd->t_state_lock);
+- fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP);
++ fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP) &&
++ (se_cmd->transport_state & CMD_T_ABORTED);
+ spin_unlock(&se_cmd->t_state_lock);
+
+ if (se_cmd->cmd_wait_set || fabric_stop) {
+diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
+index 85323ff75edf..baa888caa964 100644
+--- a/drivers/tty/serial/atmel_serial.c
++++ b/drivers/tty/serial/atmel_serial.c
+@@ -88,37 +88,6 @@ static void atmel_stop_rx(struct uart_port *port);
+
+ #define ATMEL_ISR_PASS_LIMIT 256
+
+-/* UART registers. CR is write-only, hence no GET macro */
+-#define UART_PUT_CR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_CR)
+-#define UART_GET_MR(port) __raw_readl((port)->membase + ATMEL_US_MR)
+-#define UART_PUT_MR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_MR)
+-#define UART_PUT_IER(port,v) __raw_writel(v, (port)->membase + ATMEL_US_IER)
+-#define UART_PUT_IDR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_IDR)
+-#define UART_GET_IMR(port) __raw_readl((port)->membase + ATMEL_US_IMR)
+-#define UART_GET_CSR(port) __raw_readl((port)->membase + ATMEL_US_CSR)
+-#define UART_GET_CHAR(port) __raw_readl((port)->membase + ATMEL_US_RHR)
+-#define UART_PUT_CHAR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_THR)
+-#define UART_GET_BRGR(port) __raw_readl((port)->membase + ATMEL_US_BRGR)
+-#define UART_PUT_BRGR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_BRGR)
+-#define UART_PUT_RTOR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_RTOR)
+-#define UART_PUT_TTGR(port, v) __raw_writel(v, (port)->membase + ATMEL_US_TTGR)
+-#define UART_GET_IP_NAME(port) __raw_readl((port)->membase + ATMEL_US_NAME)
+-#define UART_GET_IP_VERSION(port) __raw_readl((port)->membase + ATMEL_US_VERSION)
+-
+- /* PDC registers */
+-#define UART_PUT_PTCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_PTCR)
+-#define UART_GET_PTSR(port) __raw_readl((port)->membase + ATMEL_PDC_PTSR)
+-
+-#define UART_PUT_RPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RPR)
+-#define UART_GET_RPR(port) __raw_readl((port)->membase + ATMEL_PDC_RPR)
+-#define UART_PUT_RCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RCR)
+-#define UART_PUT_RNPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RNPR)
+-#define UART_PUT_RNCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RNCR)
+-
+-#define UART_PUT_TPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TPR)
+-#define UART_PUT_TCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TCR)
+-#define UART_GET_TCR(port) __raw_readl((port)->membase + ATMEL_PDC_TCR)
+-
+ struct atmel_dma_buffer {
+ unsigned char *buf;
+ dma_addr_t dma_addr;
+@@ -211,6 +180,16 @@ to_atmel_uart_port(struct uart_port *uart)
+ return container_of(uart, struct atmel_uart_port, uart);
+ }
+
++static inline u32 atmel_uart_readl(struct uart_port *port, u32 reg)
++{
++ return __raw_readl(port->membase + reg);
++}
++
++static inline void atmel_uart_writel(struct uart_port *port, u32 reg, u32 value)
++{
++ __raw_writel(value, port->membase + reg);
++}
++
+ #ifdef CONFIG_SERIAL_ATMEL_PDC
+ static bool atmel_use_pdc_rx(struct uart_port *port)
+ {
+@@ -256,7 +235,7 @@ static unsigned int atmel_get_lines_status(struct uart_port *port)
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+ unsigned int status, ret = 0;
+
+- status = UART_GET_CSR(port);
++ status = atmel_uart_readl(port, ATMEL_US_CSR);
+
+ mctrl_gpio_get(atmel_port->gpios, &ret);
+
+@@ -303,9 +282,9 @@ static int atmel_config_rs485(struct uart_port *port,
+ unsigned int mode;
+
+ /* Disable interrupts */
+- UART_PUT_IDR(port, atmel_port->tx_done_mask);
++ atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask);
+
+- mode = UART_GET_MR(port);
++ mode = atmel_uart_readl(port, ATMEL_US_MR);
+
+ /* Resetting serial mode to RS232 (0x0) */
+ mode &= ~ATMEL_US_USMODE;
+@@ -315,7 +294,8 @@ static int atmel_config_rs485(struct uart_port *port,
+ if (rs485conf->flags & SER_RS485_ENABLED) {
+ dev_dbg(port->dev, "Setting UART to RS485\n");
+ atmel_port->tx_done_mask = ATMEL_US_TXEMPTY;
+- UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
++ atmel_uart_writel(port, ATMEL_US_TTGR,
++ rs485conf->delay_rts_after_send);
+ mode |= ATMEL_US_USMODE_RS485;
+ } else {
+ dev_dbg(port->dev, "Setting UART to RS232\n");
+@@ -325,10 +305,10 @@ static int atmel_config_rs485(struct uart_port *port,
+ else
+ atmel_port->tx_done_mask = ATMEL_US_TXRDY;
+ }
+- UART_PUT_MR(port, mode);
++ atmel_uart_writel(port, ATMEL_US_MR, mode);
+
+ /* Enable interrupts */
+- UART_PUT_IER(port, atmel_port->tx_done_mask);
++ atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask);
+
+ return 0;
+ }
+@@ -338,7 +318,9 @@ static int atmel_config_rs485(struct uart_port *port,
+ */
+ static u_int atmel_tx_empty(struct uart_port *port)
+ {
+- return (UART_GET_CSR(port) & ATMEL_US_TXEMPTY) ? TIOCSER_TEMT : 0;
++ return (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXEMPTY) ?
++ TIOCSER_TEMT :
++ 0;
+ }
+
+ /*
+@@ -347,13 +329,14 @@ static u_int atmel_tx_empty(struct uart_port *port)
+ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
+ {
+ unsigned int control = 0;
+- unsigned int mode = UART_GET_MR(port);
++ unsigned int mode = atmel_uart_readl(port, ATMEL_US_MR);
+ unsigned int rts_paused, rts_ready;
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+ /* override mode to RS485 if needed, otherwise keep the current mode */
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+- UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
++ atmel_uart_writel(port, ATMEL_US_TTGR,
++ port->rs485.delay_rts_after_send);
+ mode &= ~ATMEL_US_USMODE;
+ mode |= ATMEL_US_USMODE_RS485;
+ }
+@@ -383,7 +366,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
+ else
+ control |= ATMEL_US_DTRDIS;
+
+- UART_PUT_CR(port, control);
++ atmel_uart_writel(port, ATMEL_US_CR, control);
+
+ mctrl_gpio_set(atmel_port->gpios, mctrl);
+
+@@ -394,7 +377,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
+ else
+ mode |= ATMEL_US_CHMODE_NORMAL;
+
+- UART_PUT_MR(port, mode);
++ atmel_uart_writel(port, ATMEL_US_MR, mode);
+ }
+
+ /*
+@@ -405,7 +388,7 @@ static u_int atmel_get_mctrl(struct uart_port *port)
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+ unsigned int ret = 0, status;
+
+- status = UART_GET_CSR(port);
++ status = atmel_uart_readl(port, ATMEL_US_CSR);
+
+ /*
+ * The control signals are active low.
+@@ -431,10 +414,10 @@ static void atmel_stop_tx(struct uart_port *port)
+
+ if (atmel_use_pdc_tx(port)) {
+ /* disable PDC transmit */
+- UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS);
+ }
+ /* Disable interrupts */
+- UART_PUT_IDR(port, atmel_port->tx_done_mask);
++ atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask);
+
+ if ((port->rs485.flags & SER_RS485_ENABLED) &&
+ !(port->rs485.flags & SER_RS485_RX_DURING_TX))
+@@ -448,21 +431,23 @@ static void atmel_start_tx(struct uart_port *port)
+ {
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+- if (atmel_use_pdc_tx(port)) {
+- if (UART_GET_PTSR(port) & ATMEL_PDC_TXTEN)
+- /* The transmitter is already running. Yes, we
+- really need this.*/
+- return;
++ if (atmel_use_pdc_tx(port) && (atmel_uart_readl(port, ATMEL_PDC_PTSR)
++ & ATMEL_PDC_TXTEN))
++ /* The transmitter is already running. Yes, we
++ really need this.*/
++ return;
+
++ if (atmel_use_pdc_tx(port) || atmel_use_dma_tx(port))
+ if ((port->rs485.flags & SER_RS485_ENABLED) &&
+ !(port->rs485.flags & SER_RS485_RX_DURING_TX))
+ atmel_stop_rx(port);
+
++ if (atmel_use_pdc_tx(port))
+ /* re-enable PDC transmit */
+- UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
+- }
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
++
+ /* Enable interrupts */
+- UART_PUT_IER(port, atmel_port->tx_done_mask);
++ atmel_uart_writel(port, ATMEL_US_IER, atmel_port->tx_done_mask);
+ }
+
+ /*
+@@ -470,17 +455,19 @@ static void atmel_start_tx(struct uart_port *port)
+ */
+ static void atmel_start_rx(struct uart_port *port)
+ {
+- UART_PUT_CR(port, ATMEL_US_RSTSTA); /* reset status and receiver */
++ /* reset status and receiver */
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
+
+- UART_PUT_CR(port, ATMEL_US_RXEN);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RXEN);
+
+ if (atmel_use_pdc_rx(port)) {
+ /* enable PDC controller */
+- UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT |
+- port->read_status_mask);
+- UART_PUT_PTCR(port, ATMEL_PDC_RXTEN);
++ atmel_uart_writel(port, ATMEL_US_IER,
++ ATMEL_US_ENDRX | ATMEL_US_TIMEOUT |
++ port->read_status_mask);
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN);
+ } else {
+- UART_PUT_IER(port, ATMEL_US_RXRDY);
++ atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_RXRDY);
+ }
+ }
+
+@@ -489,15 +476,16 @@ static void atmel_start_rx(struct uart_port *port)
+ */
+ static void atmel_stop_rx(struct uart_port *port)
+ {
+- UART_PUT_CR(port, ATMEL_US_RXDIS);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RXDIS);
+
+ if (atmel_use_pdc_rx(port)) {
+ /* disable PDC receive */
+- UART_PUT_PTCR(port, ATMEL_PDC_RXTDIS);
+- UART_PUT_IDR(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT |
+- port->read_status_mask);
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS);
++ atmel_uart_writel(port, ATMEL_US_IDR,
++ ATMEL_US_ENDRX | ATMEL_US_TIMEOUT |
++ port->read_status_mask);
+ } else {
+- UART_PUT_IDR(port, ATMEL_US_RXRDY);
++ atmel_uart_writel(port, ATMEL_US_IDR, ATMEL_US_RXRDY);
+ }
+ }
+
+@@ -537,7 +525,7 @@ static void atmel_enable_ms(struct uart_port *port)
+ else
+ ier |= ATMEL_US_DCDIC;
+
+- UART_PUT_IER(port, ier);
++ atmel_uart_writel(port, ATMEL_US_IER, ier);
+ }
+
+ /*
+@@ -576,7 +564,7 @@ static void atmel_disable_ms(struct uart_port *port)
+ else
+ idr |= ATMEL_US_DCDIC;
+
+- UART_PUT_IDR(port, idr);
++ atmel_uart_writel(port, ATMEL_US_IDR, idr);
+ }
+
+ /*
+@@ -585,9 +573,11 @@ static void atmel_disable_ms(struct uart_port *port)
+ static void atmel_break_ctl(struct uart_port *port, int break_state)
+ {
+ if (break_state != 0)
+- UART_PUT_CR(port, ATMEL_US_STTBRK); /* start break */
++ /* start break */
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTBRK);
+ else
+- UART_PUT_CR(port, ATMEL_US_STPBRK); /* stop break */
++ /* stop break */
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STPBRK);
+ }
+
+ /*
+@@ -621,7 +611,7 @@ atmel_buffer_rx_char(struct uart_port *port, unsigned int status,
+ static void atmel_pdc_rxerr(struct uart_port *port, unsigned int status)
+ {
+ /* clear error */
+- UART_PUT_CR(port, ATMEL_US_RSTSTA);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
+
+ if (status & ATMEL_US_RXBRK) {
+ /* ignore side-effect */
+@@ -644,9 +634,9 @@ static void atmel_rx_chars(struct uart_port *port)
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+ unsigned int status, ch;
+
+- status = UART_GET_CSR(port);
++ status = atmel_uart_readl(port, ATMEL_US_CSR);
+ while (status & ATMEL_US_RXRDY) {
+- ch = UART_GET_CHAR(port);
++ ch = atmel_uart_readl(port, ATMEL_US_RHR);
+
+ /*
+ * note that the error handling code is
+@@ -657,12 +647,13 @@ static void atmel_rx_chars(struct uart_port *port)
+ || atmel_port->break_active)) {
+
+ /* clear error */
+- UART_PUT_CR(port, ATMEL_US_RSTSTA);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
+
+ if (status & ATMEL_US_RXBRK
+ && !atmel_port->break_active) {
+ atmel_port->break_active = 1;
+- UART_PUT_IER(port, ATMEL_US_RXBRK);
++ atmel_uart_writel(port, ATMEL_US_IER,
++ ATMEL_US_RXBRK);
+ } else {
+ /*
+ * This is either the end-of-break
+@@ -671,14 +662,15 @@ static void atmel_rx_chars(struct uart_port *port)
+ * being set. In both cases, the next
+ * RXBRK will indicate start-of-break.
+ */
+- UART_PUT_IDR(port, ATMEL_US_RXBRK);
++ atmel_uart_writel(port, ATMEL_US_IDR,
++ ATMEL_US_RXBRK);
+ status &= ~ATMEL_US_RXBRK;
+ atmel_port->break_active = 0;
+ }
+ }
+
+ atmel_buffer_rx_char(port, status, ch);
+- status = UART_GET_CSR(port);
++ status = atmel_uart_readl(port, ATMEL_US_CSR);
+ }
+
+ tasklet_schedule(&atmel_port->tasklet);
+@@ -693,16 +685,18 @@ static void atmel_tx_chars(struct uart_port *port)
+ struct circ_buf *xmit = &port->state->xmit;
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+- if (port->x_char && UART_GET_CSR(port) & atmel_port->tx_done_mask) {
+- UART_PUT_CHAR(port, port->x_char);
++ if (port->x_char &&
++ (atmel_uart_readl(port, ATMEL_US_CSR) & atmel_port->tx_done_mask)) {
++ atmel_uart_writel(port, ATMEL_US_THR, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
+ }
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port))
+ return;
+
+- while (UART_GET_CSR(port) & atmel_port->tx_done_mask) {
+- UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
++ while (atmel_uart_readl(port, ATMEL_US_CSR) &
++ atmel_port->tx_done_mask) {
++ atmel_uart_writel(port, ATMEL_US_THR, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit))
+@@ -714,7 +708,8 @@ static void atmel_tx_chars(struct uart_port *port)
+
+ if (!uart_circ_empty(xmit))
+ /* Enable interrupts */
+- UART_PUT_IER(port, atmel_port->tx_done_mask);
++ atmel_uart_writel(port, ATMEL_US_IER,
++ atmel_port->tx_done_mask);
+ }
+
+ static void atmel_complete_tx_dma(void *arg)
+@@ -934,14 +929,14 @@ static void atmel_rx_from_dma(struct uart_port *port)
+
+
+ /* Reset the UART timeout early so that we don't miss one */
+- UART_PUT_CR(port, ATMEL_US_STTTO);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO);
+ dmastat = dmaengine_tx_status(chan,
+ atmel_port->cookie_rx,
+ &state);
+ /* Restart a new tasklet if DMA status is error */
+ if (dmastat == DMA_ERROR) {
+ dev_dbg(port->dev, "Get residue error, restart tasklet\n");
+- UART_PUT_IER(port, ATMEL_US_TIMEOUT);
++ atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_TIMEOUT);
+ tasklet_schedule(&atmel_port->tasklet);
+ return;
+ }
+@@ -1007,7 +1002,7 @@ static void atmel_rx_from_dma(struct uart_port *port)
+ tty_flip_buffer_push(tport);
+ spin_lock(&port->lock);
+
+- UART_PUT_IER(port, ATMEL_US_TIMEOUT);
++ atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_TIMEOUT);
+ }
+
+ static int atmel_prepare_rx_dma(struct uart_port *port)
+@@ -1117,8 +1112,8 @@ atmel_handle_receive(struct uart_port *port, unsigned int pending)
+ * the moment.
+ */
+ if (pending & (ATMEL_US_ENDRX | ATMEL_US_TIMEOUT)) {
+- UART_PUT_IDR(port, (ATMEL_US_ENDRX
+- | ATMEL_US_TIMEOUT));
++ atmel_uart_writel(port, ATMEL_US_IDR,
++ (ATMEL_US_ENDRX | ATMEL_US_TIMEOUT));
+ tasklet_schedule(&atmel_port->tasklet);
+ }
+
+@@ -1129,7 +1124,8 @@ atmel_handle_receive(struct uart_port *port, unsigned int pending)
+
+ if (atmel_use_dma_rx(port)) {
+ if (pending & ATMEL_US_TIMEOUT) {
+- UART_PUT_IDR(port, ATMEL_US_TIMEOUT);
++ atmel_uart_writel(port, ATMEL_US_IDR,
++ ATMEL_US_TIMEOUT);
+ tasklet_schedule(&atmel_port->tasklet);
+ }
+ }
+@@ -1142,8 +1138,8 @@ atmel_handle_receive(struct uart_port *port, unsigned int pending)
+ * End of break detected. If it came along with a
+ * character, atmel_rx_chars will handle it.
+ */
+- UART_PUT_CR(port, ATMEL_US_RSTSTA);
+- UART_PUT_IDR(port, ATMEL_US_RXBRK);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
++ atmel_uart_writel(port, ATMEL_US_IDR, ATMEL_US_RXBRK);
+ atmel_port->break_active = 0;
+ }
+ }
+@@ -1158,7 +1154,8 @@ atmel_handle_transmit(struct uart_port *port, unsigned int pending)
+
+ if (pending & atmel_port->tx_done_mask) {
+ /* Either PDC or interrupt transmission */
+- UART_PUT_IDR(port, atmel_port->tx_done_mask);
++ atmel_uart_writel(port, ATMEL_US_IDR,
++ atmel_port->tx_done_mask);
+ tasklet_schedule(&atmel_port->tasklet);
+ }
+ }
+@@ -1193,7 +1190,7 @@ static irqreturn_t atmel_interrupt(int irq, void *dev_id)
+
+ do {
+ status = atmel_get_lines_status(port);
+- mask = UART_GET_IMR(port);
++ mask = atmel_uart_readl(port, ATMEL_US_IMR);
+ pending = status & mask;
+ if (!gpio_handled) {
+ /*
+@@ -1219,7 +1216,7 @@ static irqreturn_t atmel_interrupt(int irq, void *dev_id)
+ if (atmel_port->suspended) {
+ atmel_port->pending |= pending;
+ atmel_port->pending_status = status;
+- UART_PUT_IDR(port, mask);
++ atmel_uart_writel(port, ATMEL_US_IDR, mask);
+ pm_system_wakeup();
+ break;
+ }
+@@ -1256,7 +1253,7 @@ static void atmel_tx_pdc(struct uart_port *port)
+ int count;
+
+ /* nothing left to transmit? */
+- if (UART_GET_TCR(port))
++ if (atmel_uart_readl(port, ATMEL_PDC_TCR))
+ return;
+
+ xmit->tail += pdc->ofs;
+@@ -1268,7 +1265,7 @@ static void atmel_tx_pdc(struct uart_port *port)
+ /* more to transmit - setup next transfer */
+
+ /* disable PDC transmit */
+- UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS);
+
+ if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) {
+ dma_sync_single_for_device(port->dev,
+@@ -1279,12 +1276,14 @@ static void atmel_tx_pdc(struct uart_port *port)
+ count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
+ pdc->ofs = count;
+
+- UART_PUT_TPR(port, pdc->dma_addr + xmit->tail);
+- UART_PUT_TCR(port, count);
++ atmel_uart_writel(port, ATMEL_PDC_TPR,
++ pdc->dma_addr + xmit->tail);
++ atmel_uart_writel(port, ATMEL_PDC_TCR, count);
+ /* re-enable PDC transmit */
+- UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
+ /* Enable interrupts */
+- UART_PUT_IER(port, atmel_port->tx_done_mask);
++ atmel_uart_writel(port, ATMEL_US_IER,
++ atmel_port->tx_done_mask);
+ } else {
+ if ((port->rs485.flags & SER_RS485_ENABLED) &&
+ !(port->rs485.flags & SER_RS485_RX_DURING_TX)) {
+@@ -1410,10 +1409,10 @@ static void atmel_rx_from_pdc(struct uart_port *port)
+
+ do {
+ /* Reset the UART timeout early so that we don't miss one */
+- UART_PUT_CR(port, ATMEL_US_STTTO);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO);
+
+ pdc = &atmel_port->pdc_rx[rx_idx];
+- head = UART_GET_RPR(port) - pdc->dma_addr;
++ head = atmel_uart_readl(port, ATMEL_PDC_RPR) - pdc->dma_addr;
+ tail = pdc->ofs;
+
+ /* If the PDC has switched buffers, RPR won't contain
+@@ -1456,8 +1455,8 @@ static void atmel_rx_from_pdc(struct uart_port *port)
+ */
+ if (head >= pdc->dma_size) {
+ pdc->ofs = 0;
+- UART_PUT_RNPR(port, pdc->dma_addr);
+- UART_PUT_RNCR(port, pdc->dma_size);
++ atmel_uart_writel(port, ATMEL_PDC_RNPR, pdc->dma_addr);
++ atmel_uart_writel(port, ATMEL_PDC_RNCR, pdc->dma_size);
+
+ rx_idx = !rx_idx;
+ atmel_port->pdc_rx_idx = rx_idx;
+@@ -1472,7 +1471,8 @@ static void atmel_rx_from_pdc(struct uart_port *port)
+ tty_flip_buffer_push(tport);
+ spin_lock(&port->lock);
+
+- UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
++ atmel_uart_writel(port, ATMEL_US_IER,
++ ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
+ }
+
+ static int atmel_prepare_rx_pdc(struct uart_port *port)
+@@ -1505,11 +1505,12 @@ static int atmel_prepare_rx_pdc(struct uart_port *port)
+
+ atmel_port->pdc_rx_idx = 0;
+
+- UART_PUT_RPR(port, atmel_port->pdc_rx[0].dma_addr);
+- UART_PUT_RCR(port, PDC_BUFFER_SIZE);
++ atmel_uart_writel(port, ATMEL_PDC_RPR, atmel_port->pdc_rx[0].dma_addr);
++ atmel_uart_writel(port, ATMEL_PDC_RCR, PDC_BUFFER_SIZE);
+
+- UART_PUT_RNPR(port, atmel_port->pdc_rx[1].dma_addr);
+- UART_PUT_RNCR(port, PDC_BUFFER_SIZE);
++ atmel_uart_writel(port, ATMEL_PDC_RNPR,
++ atmel_port->pdc_rx[1].dma_addr);
++ atmel_uart_writel(port, ATMEL_PDC_RNCR, PDC_BUFFER_SIZE);
+
+ return 0;
+ }
+@@ -1666,7 +1667,7 @@ static void atmel_set_ops(struct uart_port *port)
+ static void atmel_get_ip_name(struct uart_port *port)
+ {
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+- int name = UART_GET_IP_NAME(port);
++ int name = atmel_uart_readl(port, ATMEL_US_NAME);
+ u32 version;
+ int usart, uart;
+ /* usart and uart ascii */
+@@ -1683,7 +1684,7 @@ static void atmel_get_ip_name(struct uart_port *port)
+ atmel_port->is_usart = false;
+ } else {
+ /* fallback for older SoCs: use version field */
+- version = UART_GET_IP_VERSION(port);
++ version = atmel_uart_readl(port, ATMEL_US_VERSION);
+ switch (version) {
+ case 0x302:
+ case 0x10213:
+@@ -1755,7 +1756,7 @@ static int atmel_startup(struct uart_port *port)
+ * request_irq() is called we could get stuck trying to
+ * handle an unexpected interrupt
+ */
+- UART_PUT_IDR(port, -1);
++ atmel_uart_writel(port, ATMEL_US_IDR, -1);
+ atmel_port->ms_irq_enabled = false;
+
+ /*
+@@ -1803,9 +1804,9 @@ static int atmel_startup(struct uart_port *port)
+ /*
+ * Finally, enable the serial port
+ */
+- UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
+ /* enable xmit & rcvr */
+- UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN);
+
+ setup_timer(&atmel_port->uart_timer,
+ atmel_uart_timer_callback,
+@@ -1818,13 +1819,14 @@ static int atmel_startup(struct uart_port *port)
+ jiffies + uart_poll_timeout(port));
+ /* set USART timeout */
+ } else {
+- UART_PUT_RTOR(port, PDC_RX_TIMEOUT);
+- UART_PUT_CR(port, ATMEL_US_STTTO);
++ atmel_uart_writel(port, ATMEL_US_RTOR, PDC_RX_TIMEOUT);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO);
+
+- UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
++ atmel_uart_writel(port, ATMEL_US_IER,
++ ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
+ }
+ /* enable PDC controller */
+- UART_PUT_PTCR(port, ATMEL_PDC_RXTEN);
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN);
+ } else if (atmel_use_dma_rx(port)) {
+ /* set UART timeout */
+ if (!atmel_port->is_usart) {
+@@ -1832,14 +1834,15 @@ static int atmel_startup(struct uart_port *port)
+ jiffies + uart_poll_timeout(port));
+ /* set USART timeout */
+ } else {
+- UART_PUT_RTOR(port, PDC_RX_TIMEOUT);
+- UART_PUT_CR(port, ATMEL_US_STTTO);
++ atmel_uart_writel(port, ATMEL_US_RTOR, PDC_RX_TIMEOUT);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO);
+
+- UART_PUT_IER(port, ATMEL_US_TIMEOUT);
++ atmel_uart_writel(port, ATMEL_US_IER,
++ ATMEL_US_TIMEOUT);
+ }
+ } else {
+ /* enable receive only */
+- UART_PUT_IER(port, ATMEL_US_RXRDY);
++ atmel_uart_writel(port, ATMEL_US_IER, ATMEL_US_RXRDY);
+ }
+
+ return 0;
+@@ -1859,7 +1862,7 @@ static void atmel_flush_buffer(struct uart_port *port)
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+ if (atmel_use_pdc_tx(port)) {
+- UART_PUT_TCR(port, 0);
++ atmel_uart_writel(port, ATMEL_PDC_TCR, 0);
+ atmel_port->pdc_tx.ofs = 0;
+ }
+ }
+@@ -1891,8 +1894,8 @@ static void atmel_shutdown(struct uart_port *port)
+ atmel_stop_rx(port);
+ atmel_stop_tx(port);
+
+- UART_PUT_CR(port, ATMEL_US_RSTSTA);
+- UART_PUT_IDR(port, -1);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA);
++ atmel_uart_writel(port, ATMEL_US_IDR, -1);
+
+
+ /*
+@@ -1937,12 +1940,12 @@ static void atmel_serial_pm(struct uart_port *port, unsigned int state,
+ clk_prepare_enable(atmel_port->clk);
+
+ /* re-enable interrupts if we disabled some on suspend */
+- UART_PUT_IER(port, atmel_port->backup_imr);
++ atmel_uart_writel(port, ATMEL_US_IER, atmel_port->backup_imr);
+ break;
+ case 3:
+ /* Back up the interrupt mask and disable all interrupts */
+- atmel_port->backup_imr = UART_GET_IMR(port);
+- UART_PUT_IDR(port, -1);
++ atmel_port->backup_imr = atmel_uart_readl(port, ATMEL_US_IMR);
++ atmel_uart_writel(port, ATMEL_US_IDR, -1);
+
+ /*
+ * Disable the peripheral clock for this serial port.
+@@ -1965,7 +1968,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
+ unsigned int old_mode, mode, imr, quot, baud;
+
+ /* save the current mode register */
+- mode = old_mode = UART_GET_MR(port);
++ mode = old_mode = atmel_uart_readl(port, ATMEL_US_MR);
+
+ /* reset the mode, clock divisor, parity, stop bits and data size */
+ mode &= ~(ATMEL_US_USCLKS | ATMEL_US_CHRL | ATMEL_US_NBSTOP |
+@@ -2024,7 +2027,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
+
+ if (atmel_use_pdc_rx(port))
+ /* need to enable error interrupts */
+- UART_PUT_IER(port, port->read_status_mask);
++ atmel_uart_writel(port, ATMEL_US_IER, port->read_status_mask);
+
+ /*
+ * Characters to ignore
+@@ -2051,15 +2054,16 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
+ * transmitter is empty if requested by the caller, so there's
+ * no need to wait for it here.
+ */
+- imr = UART_GET_IMR(port);
+- UART_PUT_IDR(port, -1);
++ imr = atmel_uart_readl(port, ATMEL_US_IMR);
++ atmel_uart_writel(port, ATMEL_US_IDR, -1);
+
+ /* disable receiver and transmitter */
+- UART_PUT_CR(port, ATMEL_US_TXDIS | ATMEL_US_RXDIS);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS | ATMEL_US_RXDIS);
+
+ /* mode */
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+- UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
++ atmel_uart_writel(port, ATMEL_US_TTGR,
++ port->rs485.delay_rts_after_send);
+ mode |= ATMEL_US_USMODE_RS485;
+ } else if (termios->c_cflag & CRTSCTS) {
+ /* RS232 with hardware handshake (RTS/CTS) */
+@@ -2070,7 +2074,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
+ }
+
+ /* set the mode, clock divisor, parity, stop bits and data size */
+- UART_PUT_MR(port, mode);
++ atmel_uart_writel(port, ATMEL_US_MR, mode);
+
+ /*
+ * when switching the mode, set the RTS line state according to the
+@@ -2087,16 +2091,16 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
+ rts_state = ATMEL_US_RTSEN;
+ }
+
+- UART_PUT_CR(port, rts_state);
++ atmel_uart_writel(port, ATMEL_US_CR, rts_state);
+ }
+
+ /* set the baud rate */
+- UART_PUT_BRGR(port, quot);
+- UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
+- UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
++ atmel_uart_writel(port, ATMEL_US_BRGR, quot);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN);
+
+ /* restore interrupts */
+- UART_PUT_IER(port, imr);
++ atmel_uart_writel(port, ATMEL_US_IER, imr);
+
+ /* CTS flow-control and modem-status interrupts */
+ if (UART_ENABLE_MS(port, termios->c_cflag))
+@@ -2207,18 +2211,18 @@ static int atmel_verify_port(struct uart_port *port, struct serial_struct *ser)
+ #ifdef CONFIG_CONSOLE_POLL
+ static int atmel_poll_get_char(struct uart_port *port)
+ {
+- while (!(UART_GET_CSR(port) & ATMEL_US_RXRDY))
++ while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_RXRDY))
+ cpu_relax();
+
+- return UART_GET_CHAR(port);
++ return atmel_uart_readl(port, ATMEL_US_RHR);
+ }
+
+ static void atmel_poll_put_char(struct uart_port *port, unsigned char ch)
+ {
+- while (!(UART_GET_CSR(port) & ATMEL_US_TXRDY))
++ while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY))
+ cpu_relax();
+
+- UART_PUT_CHAR(port, ch);
++ atmel_uart_writel(port, ATMEL_US_THR, ch);
+ }
+ #endif
+
+@@ -2323,9 +2327,9 @@ struct platform_device *atmel_default_console_device; /* the serial console devi
+ #ifdef CONFIG_SERIAL_ATMEL_CONSOLE
+ static void atmel_console_putchar(struct uart_port *port, int ch)
+ {
+- while (!(UART_GET_CSR(port) & ATMEL_US_TXRDY))
++ while (!(atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXRDY))
+ cpu_relax();
+- UART_PUT_CHAR(port, ch);
++ atmel_uart_writel(port, ATMEL_US_THR, ch);
+ }
+
+ /*
+@@ -2341,12 +2345,13 @@ static void atmel_console_write(struct console *co, const char *s, u_int count)
+ /*
+ * First, save IMR and then disable interrupts
+ */
+- imr = UART_GET_IMR(port);
+- UART_PUT_IDR(port, ATMEL_US_RXRDY | atmel_port->tx_done_mask);
++ imr = atmel_uart_readl(port, ATMEL_US_IMR);
++ atmel_uart_writel(port, ATMEL_US_IDR,
++ ATMEL_US_RXRDY | atmel_port->tx_done_mask);
+
+ /* Store PDC transmit status and disable it */
+- pdc_tx = UART_GET_PTSR(port) & ATMEL_PDC_TXTEN;
+- UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
++ pdc_tx = atmel_uart_readl(port, ATMEL_PDC_PTSR) & ATMEL_PDC_TXTEN;
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS);
+
+ uart_console_write(port, s, count, atmel_console_putchar);
+
+@@ -2355,15 +2360,15 @@ static void atmel_console_write(struct console *co, const char *s, u_int count)
+ * and restore IMR
+ */
+ do {
+- status = UART_GET_CSR(port);
++ status = atmel_uart_readl(port, ATMEL_US_CSR);
+ } while (!(status & ATMEL_US_TXRDY));
+
+ /* Restore PDC transmit status */
+ if (pdc_tx)
+- UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
++ atmel_uart_writel(port, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
+
+ /* set interrupts back the way they were */
+- UART_PUT_IER(port, imr);
++ atmel_uart_writel(port, ATMEL_US_IER, imr);
+ }
+
+ /*
+@@ -2379,17 +2384,17 @@ static void __init atmel_console_get_options(struct uart_port *port, int *baud,
+ * If the baud rate generator isn't running, the port wasn't
+ * initialized by the boot loader.
+ */
+- quot = UART_GET_BRGR(port) & ATMEL_US_CD;
++ quot = atmel_uart_readl(port, ATMEL_US_BRGR) & ATMEL_US_CD;
+ if (!quot)
+ return;
+
+- mr = UART_GET_MR(port) & ATMEL_US_CHRL;
++ mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_CHRL;
+ if (mr == ATMEL_US_CHRL_8)
+ *bits = 8;
+ else
+ *bits = 7;
+
+- mr = UART_GET_MR(port) & ATMEL_US_PAR;
++ mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_PAR;
+ if (mr == ATMEL_US_PAR_EVEN)
+ *parity = 'e';
+ else if (mr == ATMEL_US_PAR_ODD)
+@@ -2422,9 +2427,9 @@ static int __init atmel_console_setup(struct console *co, char *options)
+ if (ret)
+ return ret;
+
+- UART_PUT_IDR(port, -1);
+- UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
+- UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
++ atmel_uart_writel(port, ATMEL_US_IDR, -1);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
++ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN);
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+@@ -2531,7 +2536,8 @@ static int atmel_serial_suspend(struct platform_device *pdev,
+
+ if (atmel_is_console_port(port) && console_suspend_enabled) {
+ /* Drain the TX shifter */
+- while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY))
++ while (!(atmel_uart_readl(port, ATMEL_US_CSR) &
++ ATMEL_US_TXEMPTY))
+ cpu_relax();
+ }
+
+@@ -2683,8 +2689,9 @@ static int atmel_serial_probe(struct platform_device *pdev)
+ clk_prepare_enable(port->clk);
+
+ if (rs485_enabled) {
+- UART_PUT_MR(&port->uart, ATMEL_US_USMODE_NORMAL);
+- UART_PUT_CR(&port->uart, ATMEL_US_RTSEN);
++ atmel_uart_writel(&port->uart, ATMEL_US_MR,
++ ATMEL_US_USMODE_NORMAL);
++ atmel_uart_writel(&port->uart, ATMEL_US_CR, ATMEL_US_RTSEN);
+ }
+
+ /*
+diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
+index e42cb6bdd31d..10f83076826d 100644
+--- a/drivers/tty/serial/samsung.c
++++ b/drivers/tty/serial/samsung.c
+@@ -1701,7 +1701,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
+ return -ENODEV;
+
+ if (port->mapbase != 0)
+- return 0;
++ return -EINVAL;
+
+ /* setup info for port */
+ port->dev = &platdev->dev;
+@@ -1755,22 +1755,25 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
+ ourport->dma = devm_kzalloc(port->dev,
+ sizeof(*ourport->dma),
+ GFP_KERNEL);
+- if (!ourport->dma)
+- return -ENOMEM;
++ if (!ourport->dma) {
++ ret = -ENOMEM;
++ goto err;
++ }
+ }
+
+ ourport->clk = clk_get(&platdev->dev, "uart");
+ if (IS_ERR(ourport->clk)) {
+ pr_err("%s: Controller clock not found\n",
+ dev_name(&platdev->dev));
+- return PTR_ERR(ourport->clk);
++ ret = PTR_ERR(ourport->clk);
++ goto err;
+ }
+
+ ret = clk_prepare_enable(ourport->clk);
+ if (ret) {
+ pr_err("uart: clock failed to prepare+enable: %d\n", ret);
+ clk_put(ourport->clk);
+- return ret;
++ goto err;
+ }
+
+ /* Keep all interrupts masked and cleared */
+@@ -1786,7 +1789,12 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
+
+ /* reset the fifos (and setup the uart) */
+ s3c24xx_serial_resetport(port, cfg);
++
+ return 0;
++
++err:
++ port->mapbase = 0;
++ return ret;
+ }
+
+ /* Device driver serial port probe */
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index f28b5375e2c8..d2e50a27140c 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -128,6 +128,12 @@ static const struct usb_device_id usb_quirk_list[] = {
+ { USB_DEVICE(0x04f3, 0x016f), .driver_info =
+ USB_QUIRK_DEVICE_QUALIFIER },
+
++ { USB_DEVICE(0x04f3, 0x0381), .driver_info =
++ USB_QUIRK_NO_LPM },
++
++ { USB_DEVICE(0x04f3, 0x21b8), .driver_info =
++ USB_QUIRK_DEVICE_QUALIFIER },
++
+ /* Roland SC-8820 */
+ { USB_DEVICE(0x0582, 0x0007), .driver_info = USB_QUIRK_RESET_RESUME },
+
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index b886226be241..f4c6e81df034 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -1939,6 +1939,10 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
+ return 1;
+ }
+
++ if (usb_endpoint_xfer_isoc(dep->endpoint.desc))
++ if ((event->status & DEPEVT_STATUS_IOC) &&
++ (trb->ctrl & DWC3_TRB_CTRL_IOC))
++ return 0;
+ return 1;
+ }
+
+diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
+index fe1d5fc7da2d..47d2c09e4f35 100644
+--- a/drivers/usb/host/ohci-q.c
++++ b/drivers/usb/host/ohci-q.c
+@@ -183,7 +183,6 @@ static int ed_schedule (struct ohci_hcd *ohci, struct ed *ed)
+ {
+ int branch;
+
+- ed->state = ED_OPER;
+ ed->ed_prev = NULL;
+ ed->ed_next = NULL;
+ ed->hwNextED = 0;
+@@ -259,6 +258,8 @@ static int ed_schedule (struct ohci_hcd *ohci, struct ed *ed)
+ /* the HC may not see the schedule updates yet, but if it does
+ * then they'll be properly ordered.
+ */
++
++ ed->state = ED_OPER;
+ return 0;
+ }
+
+diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
+index f1893e08e51a..db565f620f82 100644
+--- a/drivers/usb/renesas_usbhs/fifo.c
++++ b/drivers/usb/renesas_usbhs/fifo.c
+@@ -808,20 +808,27 @@ static void xfer_work(struct work_struct *work)
+ {
+ struct usbhs_pkt *pkt = container_of(work, struct usbhs_pkt, work);
+ struct usbhs_pipe *pipe = pkt->pipe;
+- struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe);
++ struct usbhs_fifo *fifo;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct dma_async_tx_descriptor *desc;
+- struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt);
++ struct dma_chan *chan;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ enum dma_transfer_direction dir;
++ unsigned long flags;
+
++ usbhs_lock(priv, flags);
++ fifo = usbhs_pipe_to_fifo(pipe);
++ if (!fifo)
++ goto xfer_work_end;
++
++ chan = usbhsf_dma_chan_get(fifo, pkt);
+ dir = usbhs_pipe_is_dir_in(pipe) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV;
+
+ desc = dmaengine_prep_slave_single(chan, pkt->dma + pkt->actual,
+ pkt->trans, dir,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!desc)
+- return;
++ goto xfer_work_end;
+
+ desc->callback = usbhsf_dma_complete;
+ desc->callback_param = pipe;
+@@ -829,7 +836,7 @@ static void xfer_work(struct work_struct *work)
+ pkt->cookie = dmaengine_submit(desc);
+ if (pkt->cookie < 0) {
+ dev_err(dev, "Failed to submit dma descriptor\n");
+- return;
++ goto xfer_work_end;
+ }
+
+ dev_dbg(dev, " %s %d (%d/ %d)\n",
+@@ -840,6 +847,9 @@ static void xfer_work(struct work_struct *work)
+ usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->trans);
+ dma_async_issue_pending(chan);
+ usbhs_pipe_enable(pipe);
++
++xfer_work_end:
++ usbhs_unlock(priv, flags);
+ }
+
+ /*
+diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
+index 046529656465..74af77a022a8 100644
+--- a/drivers/usb/renesas_usbhs/mod_gadget.c
++++ b/drivers/usb/renesas_usbhs/mod_gadget.c
+@@ -582,6 +582,9 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
+ struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+ struct usbhs_pipe *pipe;
+ int ret = -EIO;
++ unsigned long flags;
++
++ usbhs_lock(priv, flags);
+
+ /*
+ * if it already have pipe,
+@@ -590,7 +593,8 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
+ if (uep->pipe) {
+ usbhs_pipe_clear(uep->pipe);
+ usbhs_pipe_sequence_data0(uep->pipe);
+- return 0;
++ ret = 0;
++ goto usbhsg_ep_enable_end;
+ }
+
+ pipe = usbhs_pipe_malloc(priv,
+@@ -618,6 +622,9 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
+ ret = 0;
+ }
+
++usbhsg_ep_enable_end:
++ usbhs_unlock(priv, flags);
++
+ return ret;
+ }
+
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index f00919d579e0..2a7bf26c68e6 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -276,6 +276,7 @@ static void option_instat_callback(struct urb *urb);
+ #define TELIT_PRODUCT_LE922_USBCFG5 0x1045
+ #define TELIT_PRODUCT_LE920 0x1200
+ #define TELIT_PRODUCT_LE910 0x1201
++#define TELIT_PRODUCT_LE910_USBCFG4 0x1206
+
+ /* ZTE PRODUCTS */
+ #define ZTE_VENDOR_ID 0x19d2
+@@ -1210,6 +1211,8 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
+ .driver_info = (kernel_ulong_t)&telit_le910_blacklist },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG4),
++ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920),
+ .driver_info = (kernel_ulong_t)&telit_le920_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */
+diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
+index 89bac470f04e..56f7e2521202 100644
+--- a/drivers/virtio/virtio_balloon.c
++++ b/drivers/virtio/virtio_balloon.c
+@@ -73,7 +73,7 @@ struct virtio_balloon {
+
+ /* The array of pfns we tell the Host about. */
+ unsigned int num_pfns;
+- u32 pfns[VIRTIO_BALLOON_ARRAY_PFNS_MAX];
++ __virtio32 pfns[VIRTIO_BALLOON_ARRAY_PFNS_MAX];
+
+ /* Memory statistics */
+ int need_stats_update;
+@@ -125,14 +125,16 @@ static void tell_host(struct virtio_balloon *vb, struct virtqueue *vq)
+ wait_event(vb->acked, virtqueue_get_buf(vq, &len));
+ }
+
+-static void set_page_pfns(u32 pfns[], struct page *page)
++static void set_page_pfns(struct virtio_balloon *vb,
++ __virtio32 pfns[], struct page *page)
+ {
+ unsigned int i;
+
+ /* Set balloon pfns pointing at this page.
+ * Note that the first pfn points at start of the page. */
+ for (i = 0; i < VIRTIO_BALLOON_PAGES_PER_PAGE; i++)
+- pfns[i] = page_to_balloon_pfn(page) + i;
++ pfns[i] = cpu_to_virtio32(vb->vdev,
++ page_to_balloon_pfn(page) + i);
+ }
+
+ static void fill_balloon(struct virtio_balloon *vb, size_t num)
+@@ -155,9 +157,11 @@ static void fill_balloon(struct virtio_balloon *vb, size_t num)
+ msleep(200);
+ break;
+ }
+- set_page_pfns(vb->pfns + vb->num_pfns, page);
++ set_page_pfns(vb, vb->pfns + vb->num_pfns, page);
+ vb->num_pages += VIRTIO_BALLOON_PAGES_PER_PAGE;
+- adjust_managed_page_count(page, -1);
++ if (!virtio_has_feature(vb->vdev,
++ VIRTIO_BALLOON_F_DEFLATE_ON_OOM))
++ adjust_managed_page_count(page, -1);
+ }
+
+ /* Did we get any? */
+@@ -169,11 +173,15 @@ static void fill_balloon(struct virtio_balloon *vb, size_t num)
+ static void release_pages_balloon(struct virtio_balloon *vb)
+ {
+ unsigned int i;
++ struct page *page;
+
+ /* Find pfns pointing at start of each page, get pages and free them. */
+ for (i = 0; i < vb->num_pfns; i += VIRTIO_BALLOON_PAGES_PER_PAGE) {
+- struct page *page = balloon_pfn_to_page(vb->pfns[i]);
+- adjust_managed_page_count(page, 1);
++ page = balloon_pfn_to_page(virtio32_to_cpu(vb->vdev,
++ vb->pfns[i]));
++ if (!virtio_has_feature(vb->vdev,
++ VIRTIO_BALLOON_F_DEFLATE_ON_OOM))
++ adjust_managed_page_count(page, 1);
+ put_page(page); /* balloon reference */
+ }
+ }
+@@ -188,12 +196,14 @@ static unsigned leak_balloon(struct virtio_balloon *vb, size_t num)
+ num = min(num, ARRAY_SIZE(vb->pfns));
+
+ mutex_lock(&vb->balloon_lock);
++ /* We can't release more pages than taken */
++ num = min(num, (size_t)vb->num_pages);
+ for (vb->num_pfns = 0; vb->num_pfns < num;
+ vb->num_pfns += VIRTIO_BALLOON_PAGES_PER_PAGE) {
+ page = balloon_page_dequeue(vb_dev_info);
+ if (!page)
+ break;
+- set_page_pfns(vb->pfns + vb->num_pfns, page);
++ set_page_pfns(vb, vb->pfns + vb->num_pfns, page);
+ vb->num_pages -= VIRTIO_BALLOON_PAGES_PER_PAGE;
+ }
+
+@@ -461,13 +471,13 @@ static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info,
+ __count_vm_event(BALLOON_MIGRATE);
+ spin_unlock_irqrestore(&vb_dev_info->pages_lock, flags);
+ vb->num_pfns = VIRTIO_BALLOON_PAGES_PER_PAGE;
+- set_page_pfns(vb->pfns, newpage);
++ set_page_pfns(vb, vb->pfns, newpage);
+ tell_host(vb, vb->inflate_vq);
+
+ /* balloon's page migration 2nd step -- deflate "page" */
+ balloon_page_delete(page);
+ vb->num_pfns = VIRTIO_BALLOON_PAGES_PER_PAGE;
+- set_page_pfns(vb->pfns, page);
++ set_page_pfns(vb, vb->pfns, page);
+ tell_host(vb, vb->deflate_vq);
+
+ mutex_unlock(&vb->balloon_lock);
+diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
+index 3182273a3407..1418daa03d95 100644
+--- a/fs/cifs/cifs_fs_sb.h
++++ b/fs/cifs/cifs_fs_sb.h
+@@ -46,6 +46,9 @@
+ #define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
+ #define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
+ #define CIFS_MOUNT_MAP_SFM_CHR 0x800000 /* SFM/MAC mapping for illegal chars */
++#define CIFS_MOUNT_USE_PREFIX_PATH 0x1000000 /* make subpath with unaccessible
++ * root mountable
++ */
+
+ struct cifs_sb_info {
+ struct rb_root tlink_tree;
+@@ -67,5 +70,6 @@ struct cifs_sb_info {
+ struct backing_dev_info bdi;
+ struct delayed_work prune_tlinks;
+ struct rcu_head rcu;
++ char *prepath;
+ };
+ #endif /* _CIFS_FS_SB_H */
+diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
+index e682b36a210f..4acbc390a7d6 100644
+--- a/fs/cifs/cifsencrypt.c
++++ b/fs/cifs/cifsencrypt.c
+@@ -731,24 +731,26 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
+
+ memcpy(ses->auth_key.response + baselen, tiblob, tilen);
+
++ mutex_lock(&ses->server->srv_mutex);
++
+ rc = crypto_hmacmd5_alloc(ses->server);
+ if (rc) {
+ cifs_dbg(VFS, "could not crypto alloc hmacmd5 rc %d\n", rc);
+- goto setup_ntlmv2_rsp_ret;
++ goto unlock;
+ }
+
+ /* calculate ntlmv2_hash */
+ rc = calc_ntlmv2_hash(ses, ntlmv2_hash, nls_cp);
+ if (rc) {
+ cifs_dbg(VFS, "could not get v2 hash rc %d\n", rc);
+- goto setup_ntlmv2_rsp_ret;
++ goto unlock;
+ }
+
+ /* calculate first part of the client response (CR1) */
+ rc = CalcNTLMv2_response(ses, ntlmv2_hash);
+ if (rc) {
+ cifs_dbg(VFS, "Could not calculate CR1 rc: %d\n", rc);
+- goto setup_ntlmv2_rsp_ret;
++ goto unlock;
+ }
+
+ /* now calculate the session key for NTLMv2 */
+@@ -757,13 +759,13 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
+ if (rc) {
+ cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n",
+ __func__);
+- goto setup_ntlmv2_rsp_ret;
++ goto unlock;
+ }
+
+ rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__);
+- goto setup_ntlmv2_rsp_ret;
++ goto unlock;
+ }
+
+ rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+@@ -771,7 +773,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
+ CIFS_HMAC_MD5_HASH_SIZE);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
+- goto setup_ntlmv2_rsp_ret;
++ goto unlock;
+ }
+
+ rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
+@@ -779,6 +781,8 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
+ if (rc)
+ cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
+
++unlock:
++ mutex_unlock(&ses->server->srv_mutex);
+ setup_ntlmv2_rsp_ret:
+ kfree(tiblob);
+
+diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
+index fe24e22fc154..9f205a6159d3 100644
+--- a/fs/cifs/cifsfs.c
++++ b/fs/cifs/cifsfs.c
+@@ -679,6 +679,14 @@ cifs_do_mount(struct file_system_type *fs_type,
+ goto out_cifs_sb;
+ }
+
++ if (volume_info->prepath) {
++ cifs_sb->prepath = kstrdup(volume_info->prepath, GFP_KERNEL);
++ if (cifs_sb->prepath == NULL) {
++ root = ERR_PTR(-ENOMEM);
++ goto out_cifs_sb;
++ }
++ }
++
+ cifs_setup_cifs_sb(volume_info, cifs_sb);
+
+ rc = cifs_mount(cifs_sb, volume_info);
+@@ -717,7 +725,11 @@ cifs_do_mount(struct file_system_type *fs_type,
+ sb->s_flags |= MS_ACTIVE;
+ }
+
+- root = cifs_get_root(volume_info, sb);
++ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
++ root = dget(sb->s_root);
++ else
++ root = cifs_get_root(volume_info, sb);
++
+ if (IS_ERR(root))
+ goto out_super;
+
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index 17998d19b166..cd9d50e4f5f4 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -3436,6 +3436,44 @@ cifs_get_volume_info(char *mount_data, const char *devname)
+ return volume_info;
+ }
+
++static int
++cifs_are_all_path_components_accessible(struct TCP_Server_Info *server,
++ unsigned int xid,
++ struct cifs_tcon *tcon,
++ struct cifs_sb_info *cifs_sb,
++ char *full_path)
++{
++ int rc;
++ char *s;
++ char sep, tmp;
++
++ sep = CIFS_DIR_SEP(cifs_sb);
++ s = full_path;
++
++ rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, "");
++ while (rc == 0) {
++ /* skip separators */
++ while (*s == sep)
++ s++;
++ if (!*s)
++ break;
++ /* next separator */
++ while (*s && *s != sep)
++ s++;
++
++ /*
++ * temporarily null-terminate the path at the end of
++ * the current component
++ */
++ tmp = *s;
++ *s = 0;
++ rc = server->ops->is_path_accessible(xid, tcon, cifs_sb,
++ full_path);
++ *s = tmp;
++ }
++ return rc;
++}
++
+ int
+ cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info)
+ {
+@@ -3562,6 +3600,16 @@ remote_path_check:
+ kfree(full_path);
+ goto mount_fail_check;
+ }
++
++ rc = cifs_are_all_path_components_accessible(server,
++ xid, tcon, cifs_sb,
++ full_path);
++ if (rc != 0) {
++ cifs_dbg(VFS, "cannot query dirs between root and final path, "
++ "enabling CIFS_MOUNT_USE_PREFIX_PATH\n");
++ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;
++ rc = 0;
++ }
+ kfree(full_path);
+ }
+
+@@ -3831,6 +3879,7 @@ cifs_umount(struct cifs_sb_info *cifs_sb)
+
+ bdi_destroy(&cifs_sb->bdi);
+ kfree(cifs_sb->mountdata);
++ kfree(cifs_sb->prepath);
+ call_rcu(&cifs_sb->rcu, delayed_free);
+ }
+
+diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
+index c3eb998a99bd..26a3b389a265 100644
+--- a/fs/cifs/dir.c
++++ b/fs/cifs/dir.c
+@@ -84,6 +84,7 @@ build_path_from_dentry(struct dentry *direntry)
+ struct dentry *temp;
+ int namelen;
+ int dfsplen;
++ int pplen = 0;
+ char *full_path;
+ char dirsep;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
+@@ -95,8 +96,12 @@ build_path_from_dentry(struct dentry *direntry)
+ dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
+ else
+ dfsplen = 0;
++
++ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
++ pplen = cifs_sb->prepath ? strlen(cifs_sb->prepath) + 1 : 0;
++
+ cifs_bp_rename_retry:
+- namelen = dfsplen;
++ namelen = dfsplen + pplen;
+ seq = read_seqbegin(&rename_lock);
+ rcu_read_lock();
+ for (temp = direntry; !IS_ROOT(temp);) {
+@@ -137,7 +142,7 @@ cifs_bp_rename_retry:
+ }
+ }
+ rcu_read_unlock();
+- if (namelen != dfsplen || read_seqretry(&rename_lock, seq)) {
++ if (namelen != dfsplen + pplen || read_seqretry(&rename_lock, seq)) {
+ cifs_dbg(FYI, "did not end path lookup where expected. namelen=%ddfsplen=%d\n",
+ namelen, dfsplen);
+ /* presumably this is only possible if racing with a rename
+@@ -153,6 +158,17 @@ cifs_bp_rename_retry:
+ those safely to '/' if any are found in the middle of the prepath */
+ /* BB test paths to Windows with '/' in the midst of prepath */
+
++ if (pplen) {
++ int i;
++
++ cifs_dbg(FYI, "using cifs_sb prepath <%s>\n", cifs_sb->prepath);
++ memcpy(full_path+dfsplen+1, cifs_sb->prepath, pplen-1);
++ full_path[dfsplen] = '\\';
++ for (i = 0; i < pplen-1; i++)
++ if (full_path[dfsplen+1+i] == '/')
++ full_path[dfsplen+1+i] = CIFS_DIR_SEP(cifs_sb);
++ }
++
+ if (dfsplen) {
+ strncpy(full_path, tcon->treeName, dfsplen);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
+@@ -229,6 +245,13 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
+ goto cifs_create_get_file_info;
+ }
+
++ if (S_ISDIR(newinode->i_mode)) {
++ CIFSSMBClose(xid, tcon, fid->netfid);
++ iput(newinode);
++ rc = -EISDIR;
++ goto out;
++ }
++
+ if (!S_ISREG(newinode->i_mode)) {
+ /*
+ * The server may allow us to open things like
+@@ -399,10 +422,14 @@ cifs_create_set_dentry:
+ if (rc != 0) {
+ cifs_dbg(FYI, "Create worked, get_inode_info failed rc = %d\n",
+ rc);
+- if (server->ops->close)
+- server->ops->close(xid, tcon, fid);
+- goto out;
++ goto out_err;
+ }
++
++ if (S_ISDIR(newinode->i_mode)) {
++ rc = -EISDIR;
++ goto out_err;
++ }
++
+ d_drop(direntry);
+ d_add(direntry, newinode);
+
+@@ -410,6 +437,13 @@ out:
+ kfree(buf);
+ kfree(full_path);
+ return rc;
++
++out_err:
++ if (server->ops->close)
++ server->ops->close(xid, tcon, fid);
++ if (newinode)
++ iput(newinode);
++ goto out;
+ }
+
+ int
+diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
+index 6b66dd5d1540..9fb3bc26a2ab 100644
+--- a/fs/cifs/inode.c
++++ b/fs/cifs/inode.c
+@@ -982,10 +982,26 @@ struct inode *cifs_root_iget(struct super_block *sb)
+ struct inode *inode = NULL;
+ long rc;
+ struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
++ char *path = NULL;
++ int len;
++
++ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
++ && cifs_sb->prepath) {
++ len = strlen(cifs_sb->prepath);
++ path = kzalloc(len + 2 /* leading sep + null */, GFP_KERNEL);
++ if (path == NULL)
++ return ERR_PTR(-ENOMEM);
++ path[0] = '/';
++ memcpy(path+1, cifs_sb->prepath, len);
++ } else {
++ path = kstrdup("", GFP_KERNEL);
++ if (path == NULL)
++ return ERR_PTR(-ENOMEM);
++ }
+
+ xid = get_xid();
+ if (tcon->unix_ext) {
+- rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
++ rc = cifs_get_inode_info_unix(&inode, path, sb, xid);
+ /* some servers mistakenly claim POSIX support */
+ if (rc != -EOPNOTSUPP)
+ goto iget_no_retry;
+@@ -993,7 +1009,8 @@ struct inode *cifs_root_iget(struct super_block *sb)
+ tcon->unix_ext = false;
+ }
+
+- rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
++ convert_delimiter(path, CIFS_DIR_SEP(cifs_sb));
++ rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL);
+
+ iget_no_retry:
+ if (!inode) {
+@@ -1022,6 +1039,7 @@ iget_no_retry:
+ }
+
+ out:
++ kfree(path);
+ /* can not call macro free_xid here since in a void func
+ * TODO: This is no longer true
+ */
+diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
+index 1678b9cb94c7..57aeae6116d6 100644
+--- a/fs/cifs/smb2ops.c
++++ b/fs/cifs/smb2ops.c
+@@ -973,6 +973,9 @@ smb2_new_lease_key(struct cifs_fid *fid)
+ get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
+ }
+
++#define SMB2_SYMLINK_STRUCT_SIZE \
++ (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
++
+ static int
+ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
+ const char *full_path, char **target_path,
+@@ -985,7 +988,10 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_fid fid;
+ struct smb2_err_rsp *err_buf = NULL;
+ struct smb2_symlink_err_rsp *symlink;
+- unsigned int sub_len, sub_offset;
++ unsigned int sub_len;
++ unsigned int sub_offset;
++ unsigned int print_len;
++ unsigned int print_offset;
+
+ cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
+
+@@ -1006,11 +1012,33 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
+ kfree(utf16_path);
+ return -ENOENT;
+ }
++
++ if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
++ get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
++ kfree(utf16_path);
++ return -ENOENT;
++ }
++
+ /* open must fail on symlink - reset rc */
+ rc = 0;
+ symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
+ sub_len = le16_to_cpu(symlink->SubstituteNameLength);
+ sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
++ print_len = le16_to_cpu(symlink->PrintNameLength);
++ print_offset = le16_to_cpu(symlink->PrintNameOffset);
++
++ if (get_rfc1002_length(err_buf) + 4 <
++ SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
++ kfree(utf16_path);
++ return -ENOENT;
++ }
++
++ if (get_rfc1002_length(err_buf) + 4 <
++ SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
++ kfree(utf16_path);
++ return -ENOENT;
++ }
++
+ *target_path = cifs_strndup_from_utf16(
+ (char *)symlink->PathBuffer + sub_offset,
+ sub_len, true, cifs_sb->local_nls);
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 2c75b393d31a..660857431b1c 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -578,7 +578,6 @@ static struct dentry *dentry_kill(struct dentry *dentry)
+
+ failed:
+ spin_unlock(&dentry->d_lock);
+- cpu_relax();
+ return dentry; /* try again with same dentry */
+ }
+
+@@ -752,6 +751,8 @@ void dput(struct dentry *dentry)
+ return;
+
+ repeat:
++ might_sleep();
++
+ rcu_read_lock();
+ if (likely(fast_dput(dentry))) {
+ rcu_read_unlock();
+@@ -783,8 +784,10 @@ repeat:
+
+ kill_it:
+ dentry = dentry_kill(dentry);
+- if (dentry)
++ if (dentry) {
++ cond_resched();
+ goto repeat;
++ }
+ }
+ EXPORT_SYMBOL(dput);
+
+diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
+index 955bf49a7945..41117e51a2e9 100644
+--- a/fs/ext4/balloc.c
++++ b/fs/ext4/balloc.c
+@@ -208,6 +208,9 @@ static int ext4_init_block_bitmap(struct super_block *sb,
+ memset(bh->b_data, 0, sb->s_blocksize);
+
+ bit_max = ext4_num_base_meta_clusters(sb, block_group);
++ if ((bit_max >> 3) >= bh->b_size)
++ return -EIO;
++
+ for (bit = 0; bit < bit_max; bit++)
+ ext4_set_bit(bit, bh->b_data);
+
+diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
+index ea12f565be24..a3276bf9ac00 100644
+--- a/fs/ext4/extents.c
++++ b/fs/ext4/extents.c
+@@ -375,9 +375,13 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext)
+ ext4_fsblk_t block = ext4_ext_pblock(ext);
+ int len = ext4_ext_get_actual_len(ext);
+ ext4_lblk_t lblock = le32_to_cpu(ext->ee_block);
+- ext4_lblk_t last = lblock + len - 1;
+
+- if (len == 0 || lblock > last)
++ /*
++ * We allow neither:
++ * - zero length
++ * - overflow/wrap-around
++ */
++ if (lblock + len <= lblock)
+ return 0;
+ return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len);
+ }
+@@ -468,6 +472,10 @@ static int __ext4_ext_check(const char *function, unsigned int line,
+ error_msg = "invalid extent entries";
+ goto corrupted;
+ }
++ if (unlikely(depth > 32)) {
++ error_msg = "too large eh_depth";
++ goto corrupted;
++ }
+ /* Verify checksum on non-root extent tree nodes */
+ if (ext_depth(inode) != depth &&
+ !ext4_extent_block_csum_verify(inode, eh)) {
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index ba12e2953aec..9b55c6f71bf2 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -204,9 +204,9 @@ void ext4_evict_inode(struct inode *inode)
+ * Note that directories do not have this problem because they
+ * don't use page cache.
+ */
+- if (ext4_should_journal_data(inode) &&
+- (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode)) &&
+- inode->i_ino != EXT4_JOURNAL_INO) {
++ if (inode->i_ino != EXT4_JOURNAL_INO &&
++ ext4_should_journal_data(inode) &&
++ (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode))) {
+ journal_t *journal = EXT4_SB(inode->i_sb)->s_journal;
+ tid_t commit_tid = EXT4_I(inode)->i_datasync_tid;
+
+@@ -2557,13 +2557,36 @@ retry:
+ done = true;
+ }
+ }
+- ext4_journal_stop(handle);
++ /*
++ * Caution: If the handle is synchronous,
++ * ext4_journal_stop() can wait for transaction commit
++ * to finish which may depend on writeback of pages to
++ * complete or on page lock to be released. In that
++ * case, we have to wait until after after we have
++ * submitted all the IO, released page locks we hold,
++ * and dropped io_end reference (for extent conversion
++ * to be able to complete) before stopping the handle.
++ */
++ if (!ext4_handle_valid(handle) || handle->h_sync == 0) {
++ ext4_journal_stop(handle);
++ handle = NULL;
++ }
+ /* Submit prepared bio */
+ ext4_io_submit(&mpd.io_submit);
+ /* Unlock pages we didn't use */
+ mpage_release_unused_pages(&mpd, give_up_on_write);
+- /* Drop our io_end reference we got from init */
+- ext4_put_io_end(mpd.io_submit.io_end);
++ /*
++ * Drop our io_end reference we got from init. We have
++ * to be careful and use deferred io_end finishing if
++ * we are still holding the transaction as we can
++ * release the last reference to io_end which may end
++ * up doing unwritten extent conversion.
++ */
++ if (handle) {
++ ext4_put_io_end_defer(mpd.io_submit.io_end);
++ ext4_journal_stop(handle);
++ } else
++ ext4_put_io_end(mpd.io_submit.io_end);
+
+ if (ret == -ENOSPC && sbi->s_journal) {
+ /*
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index aedff7963468..f01dd19adb7b 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -2229,6 +2229,16 @@ static void ext4_orphan_cleanup(struct super_block *sb,
+ while (es->s_last_orphan) {
+ struct inode *inode;
+
++ /*
++ * We may have encountered an error during cleanup; if
++ * so, skip the rest.
++ */
++ if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
++ jbd_debug(1, "Skipping orphan recovery on fs with errors.\n");
++ es->s_last_orphan = 0;
++ break;
++ }
++
+ inode = ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan));
+ if (IS_ERR(inode)) {
+ es->s_last_orphan = 0;
+@@ -3711,6 +3721,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
+ goto failed_mount;
+ }
+
++ if (le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) > (blocksize / 4)) {
++ ext4_msg(sb, KERN_ERR,
++ "Number of reserved GDT blocks insanely large: %d",
++ le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks));
++ goto failed_mount;
++ }
++
+ if (sbi->s_mount_opt & EXT4_MOUNT_DAX) {
+ if (blocksize != PAGE_SIZE) {
+ ext4_msg(sb, KERN_ERR,
+diff --git a/fs/fuse/file.c b/fs/fuse/file.c
+index 3227091c2a64..5cae35490b37 100644
+--- a/fs/fuse/file.c
++++ b/fs/fuse/file.c
+@@ -417,6 +417,15 @@ static int fuse_flush(struct file *file, fl_owner_t id)
+ fuse_sync_writes(inode);
+ mutex_unlock(&inode->i_mutex);
+
++ if (test_bit(AS_ENOSPC, &file->f_mapping->flags) &&
++ test_and_clear_bit(AS_ENOSPC, &file->f_mapping->flags))
++ err = -ENOSPC;
++ if (test_bit(AS_EIO, &file->f_mapping->flags) &&
++ test_and_clear_bit(AS_EIO, &file->f_mapping->flags))
++ err = -EIO;
++ if (err)
++ return err;
++
+ req = fuse_get_req_nofail_nopages(fc, file);
+ memset(&inarg, 0, sizeof(inarg));
+ inarg.fh = ff->fh;
+@@ -462,6 +471,21 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end,
+ goto out;
+
+ fuse_sync_writes(inode);
++
++ /*
++ * Due to implementation of fuse writeback
++ * filemap_write_and_wait_range() does not catch errors.
++ * We have to do this directly after fuse_sync_writes()
++ */
++ if (test_bit(AS_ENOSPC, &file->f_mapping->flags) &&
++ test_and_clear_bit(AS_ENOSPC, &file->f_mapping->flags))
++ err = -ENOSPC;
++ if (test_bit(AS_EIO, &file->f_mapping->flags) &&
++ test_and_clear_bit(AS_EIO, &file->f_mapping->flags))
++ err = -EIO;
++ if (err)
++ goto out;
++
+ err = sync_inode_metadata(inode, 1);
+ if (err)
+ goto out;
+diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
+index 708d697113fc..846bb19d605a 100644
+--- a/fs/fuse/inode.c
++++ b/fs/fuse/inode.c
+@@ -910,7 +910,7 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req)
+ arg->flags |= FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_ATOMIC_O_TRUNC |
+ FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK |
+ FUSE_SPLICE_WRITE | FUSE_SPLICE_MOVE | FUSE_SPLICE_READ |
+- FUSE_FLOCK_LOCKS | FUSE_IOCTL_DIR | FUSE_AUTO_INVAL_DATA |
++ FUSE_FLOCK_LOCKS | FUSE_HAS_IOCTL_DIR | FUSE_AUTO_INVAL_DATA |
+ FUSE_DO_READDIRPLUS | FUSE_READDIRPLUS_AUTO | FUSE_ASYNC_DIO |
+ FUSE_WRITEBACK_CACHE | FUSE_NO_OPEN_SUPPORT;
+ req->in.h.opcode = FUSE_INIT;
+diff --git a/fs/nfs/write.c b/fs/nfs/write.c
+index f98cd9adbc0d..51af4fff890f 100644
+--- a/fs/nfs/write.c
++++ b/fs/nfs/write.c
+@@ -1241,6 +1241,9 @@ int nfs_updatepage(struct file *file, struct page *page,
+ dprintk("NFS: nfs_updatepage(%pD2 %d@%lld)\n",
+ file, count, (long long)(page_file_offset(page) + offset));
+
++ if (!count)
++ goto out;
++
+ if (nfs_can_extend_write(file, page, inode)) {
+ count = max(count + offset, nfs_page_length(page));
+ offset = 0;
+@@ -1251,7 +1254,7 @@ int nfs_updatepage(struct file *file, struct page *page,
+ nfs_set_pageerror(page);
+ else
+ __set_page_dirty_nobuffers(page);
+-
++out:
+ dprintk("NFS: nfs_updatepage returns %d (isize %lld)\n",
+ status, (long long)i_size_read(inode));
+ return status;
+diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
+index d54701f6dc78..076a9c096a6c 100644
+--- a/fs/nfsd/nfs2acl.c
++++ b/fs/nfsd/nfs2acl.c
+@@ -104,22 +104,21 @@ static __be32 nfsacld_proc_setacl(struct svc_rqst * rqstp,
+ goto out;
+
+ inode = d_inode(fh->fh_dentry);
+- if (!IS_POSIXACL(inode) || !inode->i_op->set_acl) {
+- error = -EOPNOTSUPP;
+- goto out_errno;
+- }
+
+ error = fh_want_write(fh);
+ if (error)
+ goto out_errno;
+
+- error = inode->i_op->set_acl(inode, argp->acl_access, ACL_TYPE_ACCESS);
++ fh_lock(fh);
++
++ error = set_posix_acl(inode, ACL_TYPE_ACCESS, argp->acl_access);
+ if (error)
+- goto out_drop_write;
+- error = inode->i_op->set_acl(inode, argp->acl_default,
+- ACL_TYPE_DEFAULT);
++ goto out_drop_lock;
++ error = set_posix_acl(inode, ACL_TYPE_DEFAULT, argp->acl_default);
+ if (error)
+- goto out_drop_write;
++ goto out_drop_lock;
++
++ fh_unlock(fh);
+
+ fh_drop_write(fh);
+
+@@ -131,7 +130,8 @@ out:
+ posix_acl_release(argp->acl_access);
+ posix_acl_release(argp->acl_default);
+ return nfserr;
+-out_drop_write:
++out_drop_lock:
++ fh_unlock(fh);
+ fh_drop_write(fh);
+ out_errno:
+ nfserr = nfserrno(error);
+diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c
+index 882b1a14bc3e..3911aa07a95c 100644
+--- a/fs/nfsd/nfs3acl.c
++++ b/fs/nfsd/nfs3acl.c
+@@ -95,22 +95,20 @@ static __be32 nfsd3_proc_setacl(struct svc_rqst * rqstp,
+ goto out;
+
+ inode = d_inode(fh->fh_dentry);
+- if (!IS_POSIXACL(inode) || !inode->i_op->set_acl) {
+- error = -EOPNOTSUPP;
+- goto out_errno;
+- }
+
+ error = fh_want_write(fh);
+ if (error)
+ goto out_errno;
+
+- error = inode->i_op->set_acl(inode, argp->acl_access, ACL_TYPE_ACCESS);
++ fh_lock(fh);
++
++ error = set_posix_acl(inode, ACL_TYPE_ACCESS, argp->acl_access);
+ if (error)
+- goto out_drop_write;
+- error = inode->i_op->set_acl(inode, argp->acl_default,
+- ACL_TYPE_DEFAULT);
++ goto out_drop_lock;
++ error = set_posix_acl(inode, ACL_TYPE_DEFAULT, argp->acl_default);
+
+-out_drop_write:
++out_drop_lock:
++ fh_unlock(fh);
+ fh_drop_write(fh);
+ out_errno:
+ nfserr = nfserrno(error);
+diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c
+index 67242bf7c6cc..7de3b41b43b6 100644
+--- a/fs/nfsd/nfs4acl.c
++++ b/fs/nfsd/nfs4acl.c
+@@ -782,9 +782,6 @@ nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ dentry = fhp->fh_dentry;
+ inode = d_inode(dentry);
+
+- if (!inode->i_op->set_acl || !IS_POSIXACL(inode))
+- return nfserr_attrnotsupp;
+-
+ if (S_ISDIR(inode->i_mode))
+ flags = NFS4_ACL_DIR;
+
+@@ -794,16 +791,19 @@ nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ if (host_error < 0)
+ goto out_nfserr;
+
+- host_error = inode->i_op->set_acl(inode, pacl, ACL_TYPE_ACCESS);
++ fh_lock(fhp);
++
++ host_error = set_posix_acl(inode, ACL_TYPE_ACCESS, pacl);
+ if (host_error < 0)
+- goto out_release;
++ goto out_drop_lock;
+
+ if (S_ISDIR(inode->i_mode)) {
+- host_error = inode->i_op->set_acl(inode, dpacl,
+- ACL_TYPE_DEFAULT);
++ host_error = set_posix_acl(inode, ACL_TYPE_DEFAULT, dpacl);
+ }
+
+-out_release:
++out_drop_lock:
++ fh_unlock(fhp);
++
+ posix_acl_release(pacl);
+ posix_acl_release(dpacl);
+ out_nfserr:
+diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
+index 977236a46aa2..ba5ef733951f 100644
+--- a/fs/overlayfs/dir.c
++++ b/fs/overlayfs/dir.c
+@@ -590,21 +590,25 @@ static int ovl_remove_upper(struct dentry *dentry, bool is_dir)
+ {
+ struct dentry *upperdir = ovl_dentry_upper(dentry->d_parent);
+ struct inode *dir = upperdir->d_inode;
+- struct dentry *upper = ovl_dentry_upper(dentry);
++ struct dentry *upper;
+ int err;
+
+ mutex_lock_nested(&dir->i_mutex, I_MUTEX_PARENT);
++ upper = lookup_one_len(dentry->d_name.name, upperdir,
++ dentry->d_name.len);
++ err = PTR_ERR(upper);
++ if (IS_ERR(upper))
++ goto out_unlock;
++
+ err = -ESTALE;
+- if (upper->d_parent == upperdir) {
+- /* Don't let d_delete() think it can reset d_inode */
+- dget(upper);
++ if (upper == ovl_dentry_upper(dentry)) {
+ if (is_dir)
+ err = vfs_rmdir(dir, upper);
+ else
+ err = vfs_unlink(dir, upper, NULL);
+- dput(upper);
+ ovl_dentry_version_inc(dentry->d_parent);
+ }
++ dput(upper);
+
+ /*
+ * Keeping this dentry hashed would mean having to release
+@@ -614,6 +618,7 @@ static int ovl_remove_upper(struct dentry *dentry, bool is_dir)
+ */
+ if (!err)
+ d_drop(dentry);
++out_unlock:
+ mutex_unlock(&dir->i_mutex);
+
+ return err;
+@@ -834,29 +839,39 @@ static int ovl_rename2(struct inode *olddir, struct dentry *old,
+
+ trap = lock_rename(new_upperdir, old_upperdir);
+
+- olddentry = ovl_dentry_upper(old);
+- newdentry = ovl_dentry_upper(new);
+- if (newdentry) {
++
++ olddentry = lookup_one_len(old->d_name.name, old_upperdir,
++ old->d_name.len);
++ err = PTR_ERR(olddentry);
++ if (IS_ERR(olddentry))
++ goto out_unlock;
++
++ err = -ESTALE;
++ if (olddentry != ovl_dentry_upper(old))
++ goto out_dput_old;
++
++ newdentry = lookup_one_len(new->d_name.name, new_upperdir,
++ new->d_name.len);
++ err = PTR_ERR(newdentry);
++ if (IS_ERR(newdentry))
++ goto out_dput_old;
++
++ err = -ESTALE;
++ if (ovl_dentry_upper(new)) {
+ if (opaquedir) {
+- newdentry = opaquedir;
+- opaquedir = NULL;
++ if (newdentry != opaquedir)
++ goto out_dput;
+ } else {
+- dget(newdentry);
++ if (newdentry != ovl_dentry_upper(new))
++ goto out_dput;
+ }
+ } else {
+ new_create = true;
+- newdentry = lookup_one_len(new->d_name.name, new_upperdir,
+- new->d_name.len);
+- err = PTR_ERR(newdentry);
+- if (IS_ERR(newdentry))
+- goto out_unlock;
++ if (!d_is_negative(newdentry) &&
++ (!new_opaque || !ovl_is_whiteout(newdentry)))
++ goto out_dput;
+ }
+
+- err = -ESTALE;
+- if (olddentry->d_parent != old_upperdir)
+- goto out_dput;
+- if (newdentry->d_parent != new_upperdir)
+- goto out_dput;
+ if (olddentry == trap)
+ goto out_dput;
+ if (newdentry == trap)
+@@ -919,6 +934,8 @@ static int ovl_rename2(struct inode *olddir, struct dentry *old,
+
+ out_dput:
+ dput(newdentry);
++out_dput_old:
++ dput(olddentry);
+ out_unlock:
+ unlock_rename(new_upperdir, old_upperdir);
+ out_revert_creds:
+diff --git a/fs/posix_acl.c b/fs/posix_acl.c
+index 84bb65b83570..a9dafa83678c 100644
+--- a/fs/posix_acl.c
++++ b/fs/posix_acl.c
+@@ -791,38 +791,42 @@ posix_acl_xattr_get(struct dentry *dentry, const char *name,
+ return error;
+ }
+
+-static int
+-posix_acl_xattr_set(struct dentry *dentry, const char *name,
+- const void *value, size_t size, int flags, int type)
++int
++set_posix_acl(struct inode *inode, int type, struct posix_acl *acl)
+ {
+- struct inode *inode = d_backing_inode(dentry);
+- struct posix_acl *acl = NULL;
+- int ret;
+-
+ if (!IS_POSIXACL(inode))
+ return -EOPNOTSUPP;
+ if (!inode->i_op->set_acl)
+ return -EOPNOTSUPP;
+
+ if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
+- return value ? -EACCES : 0;
++ return acl ? -EACCES : 0;
+ if (!inode_owner_or_capable(inode))
+ return -EPERM;
+
++ if (acl) {
++ int ret = posix_acl_valid(acl);
++ if (ret)
++ return ret;
++ }
++ return inode->i_op->set_acl(inode, acl, type);
++}
++EXPORT_SYMBOL(set_posix_acl);
++
++static int
++posix_acl_xattr_set(struct dentry *dentry, const char *name,
++ const void *value, size_t size, int flags, int type)
++{
++ struct inode *inode = d_backing_inode(dentry);
++ struct posix_acl *acl = NULL;
++ int ret;
++
+ if (value) {
+ acl = posix_acl_from_xattr(&init_user_ns, value, size);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+-
+- if (acl) {
+- ret = posix_acl_valid(acl);
+- if (ret)
+- goto out;
+- }
+ }
+-
+- ret = inode->i_op->set_acl(inode, acl, type);
+-out:
++ ret = set_posix_acl(inode, type, acl);
+ posix_acl_release(acl);
+ return ret;
+ }
+diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
+index 6dee68d013ff..32287fb146db 100644
+--- a/fs/proc/task_mmu.c
++++ b/fs/proc/task_mmu.c
+@@ -1257,7 +1257,7 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
+ if (!pm.buffer)
+ goto out_task;
+
+- mm = mm_access(task, PTRACE_MODE_READ);
++ mm = mm_access(task, PTRACE_MODE_READ_FSCREDS);
+ ret = PTR_ERR(mm);
+ if (!mm || IS_ERR(mm))
+ goto out_free;
+diff --git a/include/linux/i8042.h b/include/linux/i8042.h
+index 0f9bafa17a02..d98780ca9604 100644
+--- a/include/linux/i8042.h
++++ b/include/linux/i8042.h
+@@ -62,7 +62,6 @@ struct serio;
+ void i8042_lock_chip(void);
+ void i8042_unlock_chip(void);
+ int i8042_command(unsigned char *param, int command);
+-bool i8042_check_port_owner(const struct serio *);
+ int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
+ struct serio *serio));
+ int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
+@@ -83,11 +82,6 @@ static inline int i8042_command(unsigned char *param, int command)
+ return -ENODEV;
+ }
+
+-static inline bool i8042_check_port_owner(const struct serio *serio)
+-{
+- return false;
+-}
+-
+ static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
+ struct serio *serio))
+ {
+diff --git a/include/linux/serio.h b/include/linux/serio.h
+index 9f779c7a2da4..27ae809edd70 100644
+--- a/include/linux/serio.h
++++ b/include/linux/serio.h
+@@ -29,7 +29,8 @@ struct serio {
+
+ struct serio_device_id id;
+
+- spinlock_t lock; /* protects critical sections from port's interrupt handler */
++ /* Protects critical sections from port's interrupt handler */
++ spinlock_t lock;
+
+ int (*write)(struct serio *, unsigned char);
+ int (*open)(struct serio *);
+@@ -38,16 +39,29 @@ struct serio {
+ void (*stop)(struct serio *);
+
+ struct serio *parent;
+- struct list_head child_node; /* Entry in parent->children list */
++ /* Entry in parent->children list */
++ struct list_head child_node;
+ struct list_head children;
+- unsigned int depth; /* level of nesting in serio hierarchy */
++ /* Level of nesting in serio hierarchy */
++ unsigned int depth;
+
+- struct serio_driver *drv; /* accessed from interrupt, must be protected by serio->lock and serio->sem */
+- struct mutex drv_mutex; /* protects serio->drv so attributes can pin driver */
++ /*
++ * serio->drv is accessed from interrupt handlers; when modifying
++ * caller should acquire serio->drv_mutex and serio->lock.
++ */
++ struct serio_driver *drv;
++ /* Protects serio->drv so attributes can pin current driver */
++ struct mutex drv_mutex;
+
+ struct device dev;
+
+ struct list_head node;
++
++ /*
++ * For use by PS/2 layer when several ports share hardware and
++ * may get indigestion when exposed to concurrent access (i8042).
++ */
++ struct mutex *ps2_cmd_mutex;
+ };
+ #define to_serio_port(d) container_of(d, struct serio, dev)
+
+diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
+index 003dca933803..5664ca07c9c7 100644
+--- a/include/trace/events/sunrpc.h
++++ b/include/trace/events/sunrpc.h
+@@ -529,20 +529,27 @@ TRACE_EVENT(svc_xprt_do_enqueue,
+
+ TP_STRUCT__entry(
+ __field(struct svc_xprt *, xprt)
+- __field_struct(struct sockaddr_storage, ss)
+ __field(int, pid)
+ __field(unsigned long, flags)
++ __dynamic_array(unsigned char, addr, xprt != NULL ?
++ xprt->xpt_remotelen : 0)
+ ),
+
+ TP_fast_assign(
+ __entry->xprt = xprt;
+- xprt ? memcpy(&__entry->ss, &xprt->xpt_remote, sizeof(__entry->ss)) : memset(&__entry->ss, 0, sizeof(__entry->ss));
+ __entry->pid = rqst? rqst->rq_task->pid : 0;
+- __entry->flags = xprt ? xprt->xpt_flags : 0;
++ if (xprt) {
++ memcpy(__get_dynamic_array(addr),
++ &xprt->xpt_remote,
++ xprt->xpt_remotelen);
++ __entry->flags = xprt->xpt_flags;
++ } else
++ __entry->flags = 0;
+ ),
+
+ TP_printk("xprt=0x%p addr=%pIScp pid=%d flags=%s", __entry->xprt,
+- (struct sockaddr *)&__entry->ss,
++ __get_dynamic_array_len(addr) != 0 ?
++ (struct sockaddr *)__get_dynamic_array(addr) : NULL,
+ __entry->pid, show_svc_xprt_flags(__entry->flags))
+ );
+
+@@ -553,18 +560,25 @@ TRACE_EVENT(svc_xprt_dequeue,
+
+ TP_STRUCT__entry(
+ __field(struct svc_xprt *, xprt)
+- __field_struct(struct sockaddr_storage, ss)
+ __field(unsigned long, flags)
++ __dynamic_array(unsigned char, addr, xprt != NULL ?
++ xprt->xpt_remotelen : 0)
+ ),
+
+ TP_fast_assign(
+- __entry->xprt = xprt,
+- xprt ? memcpy(&__entry->ss, &xprt->xpt_remote, sizeof(__entry->ss)) : memset(&__entry->ss, 0, sizeof(__entry->ss));
+- __entry->flags = xprt ? xprt->xpt_flags : 0;
++ __entry->xprt = xprt;
++ if (xprt) {
++ memcpy(__get_dynamic_array(addr),
++ &xprt->xpt_remote,
++ xprt->xpt_remotelen);
++ __entry->flags = xprt->xpt_flags;
++ } else
++ __entry->flags = 0;
+ ),
+
+ TP_printk("xprt=0x%p addr=%pIScp flags=%s", __entry->xprt,
+- (struct sockaddr *)&__entry->ss,
++ __get_dynamic_array_len(addr) != 0 ?
++ (struct sockaddr *)__get_dynamic_array(addr) : NULL,
+ show_svc_xprt_flags(__entry->flags))
+ );
+
+@@ -592,19 +606,26 @@ TRACE_EVENT(svc_handle_xprt,
+ TP_STRUCT__entry(
+ __field(struct svc_xprt *, xprt)
+ __field(int, len)
+- __field_struct(struct sockaddr_storage, ss)
+ __field(unsigned long, flags)
++ __dynamic_array(unsigned char, addr, xprt != NULL ?
++ xprt->xpt_remotelen : 0)
+ ),
+
+ TP_fast_assign(
+ __entry->xprt = xprt;
+- xprt ? memcpy(&__entry->ss, &xprt->xpt_remote, sizeof(__entry->ss)) : memset(&__entry->ss, 0, sizeof(__entry->ss));
+ __entry->len = len;
+- __entry->flags = xprt ? xprt->xpt_flags : 0;
++ if (xprt) {
++ memcpy(__get_dynamic_array(addr),
++ &xprt->xpt_remote,
++ xprt->xpt_remotelen);
++ __entry->flags = xprt->xpt_flags;
++ } else
++ __entry->flags = 0;
+ ),
+
+ TP_printk("xprt=0x%p addr=%pIScp len=%d flags=%s", __entry->xprt,
+- (struct sockaddr *)&__entry->ss,
++ __get_dynamic_array_len(addr) != 0 ?
++ (struct sockaddr *)__get_dynamic_array(addr) : NULL,
+ __entry->len, show_svc_xprt_flags(__entry->flags))
+ );
+ #endif /* _TRACE_SUNRPC_H */
+diff --git a/ipc/msg.c b/ipc/msg.c
+index 652540613d26..3b2b0f5149ab 100644
+--- a/ipc/msg.c
++++ b/ipc/msg.c
+@@ -678,7 +678,7 @@ long do_msgsnd(int msqid, long mtype, void __user *mtext,
+ rcu_read_lock();
+ ipc_lock_object(&msq->q_perm);
+
+- ipc_rcu_putref(msq, ipc_rcu_free);
++ ipc_rcu_putref(msq, msg_rcu_free);
+ /* raced with RMID? */
+ if (!ipc_valid_object(&msq->q_perm)) {
+ err = -EIDRM;
+diff --git a/ipc/sem.c b/ipc/sem.c
+index c50aa5755c62..534caee6bf33 100644
+--- a/ipc/sem.c
++++ b/ipc/sem.c
+@@ -442,7 +442,7 @@ static inline struct sem_array *sem_obtain_object_check(struct ipc_namespace *ns
+ static inline void sem_lock_and_putref(struct sem_array *sma)
+ {
+ sem_lock(sma, NULL, -1);
+- ipc_rcu_putref(sma, ipc_rcu_free);
++ ipc_rcu_putref(sma, sem_rcu_free);
+ }
+
+ static inline void sem_rmid(struct ipc_namespace *ns, struct sem_array *s)
+@@ -1385,7 +1385,7 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum,
+ rcu_read_unlock();
+ sem_io = ipc_alloc(sizeof(ushort)*nsems);
+ if (sem_io == NULL) {
+- ipc_rcu_putref(sma, ipc_rcu_free);
++ ipc_rcu_putref(sma, sem_rcu_free);
+ return -ENOMEM;
+ }
+
+@@ -1419,20 +1419,20 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum,
+ if (nsems > SEMMSL_FAST) {
+ sem_io = ipc_alloc(sizeof(ushort)*nsems);
+ if (sem_io == NULL) {
+- ipc_rcu_putref(sma, ipc_rcu_free);
++ ipc_rcu_putref(sma, sem_rcu_free);
+ return -ENOMEM;
+ }
+ }
+
+ if (copy_from_user(sem_io, p, nsems*sizeof(ushort))) {
+- ipc_rcu_putref(sma, ipc_rcu_free);
++ ipc_rcu_putref(sma, sem_rcu_free);
+ err = -EFAULT;
+ goto out_free;
+ }
+
+ for (i = 0; i < nsems; i++) {
+ if (sem_io[i] > SEMVMX) {
+- ipc_rcu_putref(sma, ipc_rcu_free);
++ ipc_rcu_putref(sma, sem_rcu_free);
+ err = -ERANGE;
+ goto out_free;
+ }
+@@ -1722,7 +1722,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
+ /* step 2: allocate new undo structure */
+ new = kzalloc(sizeof(struct sem_undo) + sizeof(short)*nsems, GFP_KERNEL);
+ if (!new) {
+- ipc_rcu_putref(sma, ipc_rcu_free);
++ ipc_rcu_putref(sma, sem_rcu_free);
+ return ERR_PTR(-ENOMEM);
+ }
+
+diff --git a/kernel/auditsc.c b/kernel/auditsc.c
+index 9fb9d1cb83ce..b1943039aab6 100644
+--- a/kernel/auditsc.c
++++ b/kernel/auditsc.c
+@@ -73,6 +73,7 @@
+ #include <linux/compat.h>
+ #include <linux/ctype.h>
+ #include <linux/string.h>
++#include <linux/uaccess.h>
+ #include <uapi/linux/limits.h>
+
+ #include "audit.h"
+@@ -82,7 +83,8 @@
+ #define AUDITSC_SUCCESS 1
+ #define AUDITSC_FAILURE 2
+
+-/* no execve audit message should be longer than this (userspace limits) */
++/* no execve audit message should be longer than this (userspace limits),
++ * see the note near the top of audit_log_execve_info() about this value */
+ #define MAX_EXECVE_AUDIT_LEN 7500
+
+ /* max length to print of cmdline/proctitle value during audit */
+@@ -987,185 +989,178 @@ static int audit_log_pid_context(struct audit_context *context, pid_t pid,
+ return rc;
+ }
+
+-/*
+- * to_send and len_sent accounting are very loose estimates. We aren't
+- * really worried about a hard cap to MAX_EXECVE_AUDIT_LEN so much as being
+- * within about 500 bytes (next page boundary)
+- *
+- * why snprintf? an int is up to 12 digits long. if we just assumed when
+- * logging that a[%d]= was going to be 16 characters long we would be wasting
+- * space in every audit message. In one 7500 byte message we can log up to
+- * about 1000 min size arguments. That comes down to about 50% waste of space
+- * if we didn't do the snprintf to find out how long arg_num_len was.
+- */
+-static int audit_log_single_execve_arg(struct audit_context *context,
+- struct audit_buffer **ab,
+- int arg_num,
+- size_t *len_sent,
+- const char __user *p,
+- char *buf)
++static void audit_log_execve_info(struct audit_context *context,
++ struct audit_buffer **ab)
+ {
+- char arg_num_len_buf[12];
+- const char __user *tmp_p = p;
+- /* how many digits are in arg_num? 5 is the length of ' a=""' */
+- size_t arg_num_len = snprintf(arg_num_len_buf, 12, "%d", arg_num) + 5;
+- size_t len, len_left, to_send;
+- size_t max_execve_audit_len = MAX_EXECVE_AUDIT_LEN;
+- unsigned int i, has_cntl = 0, too_long = 0;
+- int ret;
+-
+- /* strnlen_user includes the null we don't want to send */
+- len_left = len = strnlen_user(p, MAX_ARG_STRLEN) - 1;
+-
+- /*
+- * We just created this mm, if we can't find the strings
+- * we just copied into it something is _very_ wrong. Similar
+- * for strings that are too long, we should not have created
+- * any.
+- */
+- if (unlikely((len == -1) || len > MAX_ARG_STRLEN - 1)) {
+- WARN_ON(1);
+- send_sig(SIGKILL, current, 0);
+- return -1;
++ long len_max;
++ long len_rem;
++ long len_full;
++ long len_buf;
++ long len_abuf;
++ long len_tmp;
++ bool require_data;
++ bool encode;
++ unsigned int iter;
++ unsigned int arg;
++ char *buf_head;
++ char *buf;
++ const char __user *p = (const char __user *)current->mm->arg_start;
++
++ /* NOTE: this buffer needs to be large enough to hold all the non-arg
++ * data we put in the audit record for this argument (see the
++ * code below) ... at this point in time 96 is plenty */
++ char abuf[96];
++
++ /* NOTE: we set MAX_EXECVE_AUDIT_LEN to a rather arbitrary limit, the
++ * current value of 7500 is not as important as the fact that it
++ * is less than 8k, a setting of 7500 gives us plenty of wiggle
++ * room if we go over a little bit in the logging below */
++ WARN_ON_ONCE(MAX_EXECVE_AUDIT_LEN > 7500);
++ len_max = MAX_EXECVE_AUDIT_LEN;
++
++ /* scratch buffer to hold the userspace args */
++ buf_head = kmalloc(MAX_EXECVE_AUDIT_LEN + 1, GFP_KERNEL);
++ if (!buf_head) {
++ audit_panic("out of memory for argv string");
++ return;
+ }
++ buf = buf_head;
+
+- /* walk the whole argument looking for non-ascii chars */
++ audit_log_format(*ab, "argc=%d", context->execve.argc);
++
++ len_rem = len_max;
++ len_buf = 0;
++ len_full = 0;
++ require_data = true;
++ encode = false;
++ iter = 0;
++ arg = 0;
+ do {
+- if (len_left > MAX_EXECVE_AUDIT_LEN)
+- to_send = MAX_EXECVE_AUDIT_LEN;
+- else
+- to_send = len_left;
+- ret = copy_from_user(buf, tmp_p, to_send);
+- /*
+- * There is no reason for this copy to be short. We just
+- * copied them here, and the mm hasn't been exposed to user-
+- * space yet.
+- */
+- if (ret) {
+- WARN_ON(1);
+- send_sig(SIGKILL, current, 0);
+- return -1;
+- }
+- buf[to_send] = '\0';
+- has_cntl = audit_string_contains_control(buf, to_send);
+- if (has_cntl) {
+- /*
+- * hex messages get logged as 2 bytes, so we can only
+- * send half as much in each message
+- */
+- max_execve_audit_len = MAX_EXECVE_AUDIT_LEN / 2;
+- break;
+- }
+- len_left -= to_send;
+- tmp_p += to_send;
+- } while (len_left > 0);
+-
+- len_left = len;
+-
+- if (len > max_execve_audit_len)
+- too_long = 1;
+-
+- /* rewalk the argument actually logging the message */
+- for (i = 0; len_left > 0; i++) {
+- int room_left;
+-
+- if (len_left > max_execve_audit_len)
+- to_send = max_execve_audit_len;
+- else
+- to_send = len_left;
+-
+- /* do we have space left to send this argument in this ab? */
+- room_left = MAX_EXECVE_AUDIT_LEN - arg_num_len - *len_sent;
+- if (has_cntl)
+- room_left -= (to_send * 2);
+- else
+- room_left -= to_send;
+- if (room_left < 0) {
+- *len_sent = 0;
+- audit_log_end(*ab);
+- *ab = audit_log_start(context, GFP_KERNEL, AUDIT_EXECVE);
+- if (!*ab)
+- return 0;
+- }
++ /* NOTE: we don't ever want to trust this value for anything
++ * serious, but the audit record format insists we
++ * provide an argument length for really long arguments,
++ * e.g. > MAX_EXECVE_AUDIT_LEN, so we have no choice but
++ * to use strncpy_from_user() to obtain this value for
++ * recording in the log, although we don't use it
++ * anywhere here to avoid a double-fetch problem */
++ if (len_full == 0)
++ len_full = strnlen_user(p, MAX_ARG_STRLEN) - 1;
++
++ /* read more data from userspace */
++ if (require_data) {
++ /* can we make more room in the buffer? */
++ if (buf != buf_head) {
++ memmove(buf_head, buf, len_buf);
++ buf = buf_head;
++ }
++
++ /* fetch as much as we can of the argument */
++ len_tmp = strncpy_from_user(&buf_head[len_buf], p,
++ len_max - len_buf);
++ if (len_tmp == -EFAULT) {
++ /* unable to copy from userspace */
++ send_sig(SIGKILL, current, 0);
++ goto out;
++ } else if (len_tmp == (len_max - len_buf)) {
++ /* buffer is not large enough */
++ require_data = true;
++ /* NOTE: if we are going to span multiple
++ * buffers force the encoding so we stand
++ * a chance at a sane len_full value and
++ * consistent record encoding */
++ encode = true;
++ len_full = len_full * 2;
++ p += len_tmp;
++ } else {
++ require_data = false;
++ if (!encode)
++ encode = audit_string_contains_control(
++ buf, len_tmp);
++ /* try to use a trusted value for len_full */
++ if (len_full < len_max)
++ len_full = (encode ?
++ len_tmp * 2 : len_tmp);
++ p += len_tmp + 1;
++ }
++ len_buf += len_tmp;
++ buf_head[len_buf] = '\0';
+
+- /*
+- * first record needs to say how long the original string was
+- * so we can be sure nothing was lost.
+- */
+- if ((i == 0) && (too_long))
+- audit_log_format(*ab, " a%d_len=%zu", arg_num,
+- has_cntl ? 2*len : len);
+-
+- /*
+- * normally arguments are small enough to fit and we already
+- * filled buf above when we checked for control characters
+- * so don't bother with another copy_from_user
+- */
+- if (len >= max_execve_audit_len)
+- ret = copy_from_user(buf, p, to_send);
+- else
+- ret = 0;
+- if (ret) {
+- WARN_ON(1);
+- send_sig(SIGKILL, current, 0);
+- return -1;
++ /* length of the buffer in the audit record? */
++ len_abuf = (encode ? len_buf * 2 : len_buf + 2);
+ }
+- buf[to_send] = '\0';
+-
+- /* actually log it */
+- audit_log_format(*ab, " a%d", arg_num);
+- if (too_long)
+- audit_log_format(*ab, "[%d]", i);
+- audit_log_format(*ab, "=");
+- if (has_cntl)
+- audit_log_n_hex(*ab, buf, to_send);
+- else
+- audit_log_string(*ab, buf);
+-
+- p += to_send;
+- len_left -= to_send;
+- *len_sent += arg_num_len;
+- if (has_cntl)
+- *len_sent += to_send * 2;
+- else
+- *len_sent += to_send;
+- }
+- /* include the null we didn't log */
+- return len + 1;
+-}
+
+-static void audit_log_execve_info(struct audit_context *context,
+- struct audit_buffer **ab)
+-{
+- int i, len;
+- size_t len_sent = 0;
+- const char __user *p;
+- char *buf;
++ /* write as much as we can to the audit log */
++ if (len_buf > 0) {
++ /* NOTE: some magic numbers here - basically if we
++ * can't fit a reasonable amount of data into the
++ * existing audit buffer, flush it and start with
++ * a new buffer */
++ if ((sizeof(abuf) + 8) > len_rem) {
++ len_rem = len_max;
++ audit_log_end(*ab);
++ *ab = audit_log_start(context,
++ GFP_KERNEL, AUDIT_EXECVE);
++ if (!*ab)
++ goto out;
++ }
+
+- p = (const char __user *)current->mm->arg_start;
++ /* create the non-arg portion of the arg record */
++ len_tmp = 0;
++ if (require_data || (iter > 0) ||
++ ((len_abuf + sizeof(abuf)) > len_rem)) {
++ if (iter == 0) {
++ len_tmp += snprintf(&abuf[len_tmp],
++ sizeof(abuf) - len_tmp,
++ " a%d_len=%lu",
++ arg, len_full);
++ }
++ len_tmp += snprintf(&abuf[len_tmp],
++ sizeof(abuf) - len_tmp,
++ " a%d[%d]=", arg, iter++);
++ } else
++ len_tmp += snprintf(&abuf[len_tmp],
++ sizeof(abuf) - len_tmp,
++ " a%d=", arg);
++ WARN_ON(len_tmp >= sizeof(abuf));
++ abuf[sizeof(abuf) - 1] = '\0';
++
++ /* log the arg in the audit record */
++ audit_log_format(*ab, "%s", abuf);
++ len_rem -= len_tmp;
++ len_tmp = len_buf;
++ if (encode) {
++ if (len_abuf > len_rem)
++ len_tmp = len_rem / 2; /* encoding */
++ audit_log_n_hex(*ab, buf, len_tmp);
++ len_rem -= len_tmp * 2;
++ len_abuf -= len_tmp * 2;
++ } else {
++ if (len_abuf > len_rem)
++ len_tmp = len_rem - 2; /* quotes */
++ audit_log_n_string(*ab, buf, len_tmp);
++ len_rem -= len_tmp + 2;
++ /* don't subtract the "2" because we still need
++ * to add quotes to the remaining string */
++ len_abuf -= len_tmp;
++ }
++ len_buf -= len_tmp;
++ buf += len_tmp;
++ }
+
+- audit_log_format(*ab, "argc=%d", context->execve.argc);
++ /* ready to move to the next argument? */
++ if ((len_buf == 0) && !require_data) {
++ arg++;
++ iter = 0;
++ len_full = 0;
++ require_data = true;
++ encode = false;
++ }
++ } while (arg < context->execve.argc);
+
+- /*
+- * we need some kernel buffer to hold the userspace args. Just
+- * allocate one big one rather than allocating one of the right size
+- * for every single argument inside audit_log_single_execve_arg()
+- * should be <8k allocation so should be pretty safe.
+- */
+- buf = kmalloc(MAX_EXECVE_AUDIT_LEN + 1, GFP_KERNEL);
+- if (!buf) {
+- audit_panic("out of memory for argv string");
+- return;
+- }
++ /* NOTE: the caller handles the final audit_log_end() call */
+
+- for (i = 0; i < context->execve.argc; i++) {
+- len = audit_log_single_execve_arg(context, ab, i,
+- &len_sent, p, buf);
+- if (len <= 0)
+- break;
+- p += len;
+- }
+- kfree(buf);
++out:
++ kfree(buf_head);
+ }
+
+ static void show_special(struct audit_context *context, int *call_panic)
+diff --git a/kernel/module.c b/kernel/module.c
+index be8971d817ed..6920d1080cdd 100644
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -2451,13 +2451,18 @@ static inline void kmemleak_load_module(const struct module *mod,
+ #endif
+
+ #ifdef CONFIG_MODULE_SIG
+-static int module_sig_check(struct load_info *info)
++static int module_sig_check(struct load_info *info, int flags)
+ {
+ int err = -ENOKEY;
+ const unsigned long markerlen = sizeof(MODULE_SIG_STRING) - 1;
+ const void *mod = info->hdr;
+
+- if (info->len > markerlen &&
++ /*
++ * Require flags == 0, as a module with version information
++ * removed is no longer the module that was signed
++ */
++ if (flags == 0 &&
++ info->len > markerlen &&
+ memcmp(mod + info->len - markerlen, MODULE_SIG_STRING, markerlen) == 0) {
+ /* We truncate the module to discard the signature */
+ info->len -= markerlen;
+@@ -2476,7 +2481,7 @@ static int module_sig_check(struct load_info *info)
+ return err;
+ }
+ #else /* !CONFIG_MODULE_SIG */
+-static int module_sig_check(struct load_info *info)
++static int module_sig_check(struct load_info *info, int flags)
+ {
+ return 0;
+ }
+@@ -3277,7 +3282,7 @@ static int load_module(struct load_info *info, const char __user *uargs,
+ long err;
+ char *after_dashes;
+
+- err = module_sig_check(info);
++ err = module_sig_check(info, flags);
+ if (err)
+ goto free_copy;
+
+diff --git a/mm/hugetlb.c b/mm/hugetlb.c
+index 9d724c0383d2..88b472bec71d 100644
+--- a/mm/hugetlb.c
++++ b/mm/hugetlb.c
+@@ -1756,6 +1756,10 @@ static unsigned long set_max_huge_pages(struct hstate *h, unsigned long count,
+ * and reducing the surplus.
+ */
+ spin_unlock(&hugetlb_lock);
++
++ /* yield cpu to avoid soft lockup */
++ cond_resched();
++
+ if (hstate_is_gigantic(h))
+ ret = alloc_fresh_gigantic_page(h, nodes_allowed);
+ else
+diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
+index a7278f05eafb..289c96d3e47d 100644
+--- a/net/bluetooth/l2cap_sock.c
++++ b/net/bluetooth/l2cap_sock.c
+@@ -927,7 +927,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
+ break;
+ }
+
+- if (get_user(opt, (u32 __user *) optval)) {
++ if (get_user(opt, (u16 __user *) optval)) {
+ err = -EFAULT;
+ break;
+ }
+diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
+index 9a1edcde4ba5..eca46d3d3ff3 100644
+--- a/net/irda/af_irda.c
++++ b/net/irda/af_irda.c
+@@ -1024,8 +1024,11 @@ static int irda_connect(struct socket *sock, struct sockaddr *uaddr,
+ }
+
+ /* Check if we have opened a local TSAP */
+- if (!self->tsap)
+- irda_open_tsap(self, LSAP_ANY, addr->sir_name);
++ if (!self->tsap) {
++ err = irda_open_tsap(self, LSAP_ANY, addr->sir_name);
++ if (err)
++ goto out;
++ }
+
+ /* Move to connecting socket, start sending Connect Requests */
+ sock->state = SS_CONNECTING;
+diff --git a/net/netfilter/nf_nat_redirect.c b/net/netfilter/nf_nat_redirect.c
+index 97b75f9bfbcd..d43869879fcf 100644
+--- a/net/netfilter/nf_nat_redirect.c
++++ b/net/netfilter/nf_nat_redirect.c
+@@ -55,7 +55,7 @@ nf_nat_redirect_ipv4(struct sk_buff *skb,
+
+ rcu_read_lock();
+ indev = __in_dev_get_rcu(skb->dev);
+- if (indev != NULL) {
++ if (indev && indev->ifa_list) {
+ ifa = indev->ifa_list;
+ newdst = ifa->ifa_local;
+ }
+diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c
+index 28cddc85b700..bfa2b6d5b5cf 100644
+--- a/net/netlabel/netlabel_kapi.c
++++ b/net/netlabel/netlabel_kapi.c
+@@ -824,7 +824,11 @@ socket_setattr_return:
+ */
+ void netlbl_sock_delattr(struct sock *sk)
+ {
+- cipso_v4_sock_delattr(sk);
++ switch (sk->sk_family) {
++ case AF_INET:
++ cipso_v4_sock_delattr(sk);
++ break;
++ }
+ }
+
+ /**
+@@ -987,7 +991,11 @@ req_setattr_return:
+ */
+ void netlbl_req_delattr(struct request_sock *req)
+ {
+- cipso_v4_req_delattr(req);
++ switch (req->rsk_ops->family) {
++ case AF_INET:
++ cipso_v4_req_delattr(req);
++ break;
++ }
+ }
+
+ /**
+diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
+index e00bcd129336..5dffe37f300e 100644
+--- a/scripts/recordmcount.c
++++ b/scripts/recordmcount.c
+@@ -33,10 +33,17 @@
+ #include <string.h>
+ #include <unistd.h>
+
++/*
++ * glibc synced up and added the metag number but didn't add the relocations.
++ * Work around this in a crude manner for now.
++ */
+ #ifndef EM_METAG
+-/* Remove this when these make it to the standard system elf.h. */
+ #define EM_METAG 174
++#endif
++#ifndef R_METAG_ADDR32
+ #define R_METAG_ADDR32 2
++#endif
++#ifndef R_METAG_NONE
+ #define R_METAG_NONE 3
+ #endif
+
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index 7e3020c1e9d3..43e785a79eb3 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -1247,6 +1247,7 @@ static void snd_timer_user_ccallback(struct snd_timer_instance *timeri,
+ tu->tstamp = *tstamp;
+ if ((tu->filter & (1 << event)) == 0 || !tu->tread)
+ return;
++ memset(&r1, 0, sizeof(r1));
+ r1.event = event;
+ r1.tstamp = *tstamp;
+ r1.val = resolution;
+@@ -1281,6 +1282,7 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri,
+ }
+ if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) &&
+ tu->last_resolution != resolution) {
++ memset(&r1, 0, sizeof(r1));
+ r1.event = SNDRV_TIMER_EVENT_RESOLUTION;
+ r1.tstamp = tstamp;
+ r1.val = resolution;
+@@ -1746,6 +1748,7 @@ static int snd_timer_user_params(struct file *file,
+ if (tu->timeri->flags & SNDRV_TIMER_IFLG_EARLY_EVENT) {
+ if (tu->tread) {
+ struct snd_timer_tread tread;
++ memset(&tread, 0, sizeof(tread));
+ tread.event = SNDRV_TIMER_EVENT_EARLY;
+ tread.tstamp.tv_sec = 0;
+ tread.tstamp.tv_nsec = 0;
+diff --git a/sound/hda/array.c b/sound/hda/array.c
+index 516795baa7db..5dfa610e4471 100644
+--- a/sound/hda/array.c
++++ b/sound/hda/array.c
+@@ -21,13 +21,15 @@ void *snd_array_new(struct snd_array *array)
+ return NULL;
+ if (array->used >= array->alloced) {
+ int num = array->alloced + array->alloc_align;
++ int oldsize = array->alloced * array->elem_size;
+ int size = (num + 1) * array->elem_size;
+ void *nlist;
+ if (snd_BUG_ON(num >= 4096))
+ return NULL;
+- nlist = krealloc(array->list, size, GFP_KERNEL | __GFP_ZERO);
++ nlist = krealloc(array->list, size, GFP_KERNEL);
+ if (!nlist)
+ return NULL;
++ memset(nlist + oldsize, 0, size - oldsize);
+ array->list = nlist;
+ array->alloced = num;
+ }
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index f24a69db0dd8..c8506496826a 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -2114,6 +2114,8 @@ static const struct pci_device_id azx_ids[] = {
+ { PCI_DEVICE(0x1022, 0x780d),
+ .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
+ /* ATI HDMI */
++ { PCI_DEVICE(0x1002, 0x0002),
++ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0x1308),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0x157a),
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index b3234321aa4b..429697a93a71 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4584,6 +4584,71 @@ static void alc290_fixup_mono_speakers(struct hda_codec *codec,
+ }
+ }
+
++static void alc298_fixup_speaker_volume(struct hda_codec *codec,
++ const struct hda_fixup *fix, int action)
++{
++ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
++ /* The speaker is routed to the Node 0x06 by a mistake, as a result
++ we can't adjust the speaker's volume since this node does not has
++ Amp-out capability. we change the speaker's route to:
++ Node 0x02 (Audio Output) -> Node 0x0c (Audio Mixer) -> Node 0x17 (
++ Pin Complex), since Node 0x02 has Amp-out caps, we can adjust
++ speaker's volume now. */
++
++ hda_nid_t conn1[1] = { 0x0c };
++ snd_hda_override_conn_list(codec, 0x17, 1, conn1);
++ }
++}
++
++/* Hook to update amp GPIO4 for automute */
++static void alc280_hp_gpio4_automute_hook(struct hda_codec *codec,
++ struct hda_jack_callback *jack)
++{
++ struct alc_spec *spec = codec->spec;
++
++ snd_hda_gen_hp_automute(codec, jack);
++ /* mute_led_polarity is set to 0, so we pass inverted value here */
++ alc_update_gpio_led(codec, 0x10, !spec->gen.hp_jack_present);
++}
++
++/* Manage GPIOs for HP EliteBook Folio 9480m.
++ *
++ * GPIO4 is the headphone amplifier power control
++ * GPIO3 is the audio output mute indicator LED
++ */
++
++static void alc280_fixup_hp_9480m(struct hda_codec *codec,
++ const struct hda_fixup *fix,
++ int action)
++{
++ struct alc_spec *spec = codec->spec;
++ static const struct hda_verb gpio_init[] = {
++ { 0x01, AC_VERB_SET_GPIO_MASK, 0x18 },
++ { 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x18 },
++ {}
++ };
++
++ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
++ /* Set the hooks to turn the headphone amp on/off
++ * as needed
++ */
++ spec->gen.vmaster_mute.hook = alc_fixup_gpio_mute_hook;
++ spec->gen.hp_automute_hook = alc280_hp_gpio4_automute_hook;
++
++ /* The GPIOs are currently off */
++ spec->gpio_led = 0;
++
++ /* GPIO3 is connected to the output mute LED,
++ * high is on, low is off
++ */
++ spec->mute_led_polarity = 0;
++ spec->gpio_mute_led_mask = 0x08;
++
++ /* Initialize GPIO configuration */
++ snd_hda_add_verbs(codec, gpio_init);
++ }
++}
++
+ /* for hda_fixup_thinkpad_acpi() */
+ #include "thinkpad_helper.c"
+
+@@ -4665,6 +4730,7 @@ enum {
+ ALC286_FIXUP_HP_GPIO_LED,
+ ALC280_FIXUP_HP_GPIO2_MIC_HOTKEY,
+ ALC280_FIXUP_HP_DOCK_PINS,
++ ALC280_FIXUP_HP_9480M,
+ ALC288_FIXUP_DELL_HEADSET_MODE,
+ ALC288_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC288_FIXUP_DELL_XPS_13_GPIO6,
+@@ -4683,6 +4749,7 @@ enum {
+ ALC280_FIXUP_HP_HEADSET_MIC,
+ ALC221_FIXUP_HP_FRONT_MIC,
+ ALC292_FIXUP_TPT460,
++ ALC298_FIXUP_SPK_VOLUME,
+ };
+
+ static const struct hda_fixup alc269_fixups[] = {
+@@ -5199,6 +5266,10 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC280_FIXUP_HP_GPIO4
+ },
++ [ALC280_FIXUP_HP_9480M] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc280_fixup_hp_9480m,
++ },
+ [ALC288_FIXUP_DELL_HEADSET_MODE] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_headset_mode_dell_alc288,
+@@ -5334,6 +5405,12 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC293_FIXUP_LENOVO_SPK_NOISE,
+ },
++ [ALC298_FIXUP_SPK_VOLUME] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc298_fixup_speaker_volume,
++ .chained = true,
++ .chain_id = ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
++ },
+ };
+
+ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+@@ -5380,6 +5457,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13 9350", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x075b, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
++ SND_PCI_QUIRK(0x1028, 0x075d, "Dell AIO", ALC298_FIXUP_SPK_VOLUME),
+ SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
+@@ -5407,6 +5485,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x103c, 0x22b7, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+ SND_PCI_QUIRK(0x103c, 0x22bf, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+ SND_PCI_QUIRK(0x103c, 0x22cf, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
++ SND_PCI_QUIRK(0x103c, 0x22db, "HP", ALC280_FIXUP_HP_9480M),
+ SND_PCI_QUIRK(0x103c, 0x22dc, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED),
+ SND_PCI_QUIRK(0x103c, 0x22fb, "HP", ALC269_FIXUP_HP_GPIO_MIC1_LED),
+ /* ALC290 */
+@@ -5700,6 +5779,32 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ {0x1e, 0x411111f0},
+ {0x21, 0x0221103f}),
+ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x12, 0x40000000},
++ {0x14, 0x90170130},
++ {0x1b, 0x02011020},
++ {0x21, 0x0221103f}),
++ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x14, 0x90170150},
++ {0x17, 0x411111f0},
++ {0x18, 0x411111f0},
++ {0x19, 0x411111f0},
++ {0x1a, 0x411111f0},
++ {0x1b, 0x02011020},
++ {0x1d, 0x4054c029},
++ {0x1e, 0x411111f0},
++ {0x21, 0x0221105f}),
++ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x12, 0x40000000},
++ {0x14, 0x90170110},
++ {0x17, 0x411111f0},
++ {0x18, 0x411111f0},
++ {0x19, 0x411111f0},
++ {0x1a, 0x411111f0},
++ {0x1b, 0x01014020},
++ {0x1d, 0x4054c029},
++ {0x1e, 0x411111f0},
++ {0x21, 0x0221101f}),
++ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+ {0x12, 0x90a60160},
+ {0x14, 0x90170120},
+ {0x17, 0x90170140},
+diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
+index d93deb5ce4f2..f9746f29f870 100644
+--- a/virt/kvm/kvm_main.c
++++ b/virt/kvm/kvm_main.c
+@@ -134,6 +134,7 @@ int vcpu_load(struct kvm_vcpu *vcpu)
+ put_cpu();
+ return 0;
+ }
++EXPORT_SYMBOL_GPL(vcpu_load);
+
+ void vcpu_put(struct kvm_vcpu *vcpu)
+ {
+@@ -143,6 +144,7 @@ void vcpu_put(struct kvm_vcpu *vcpu)
+ preempt_enable();
+ mutex_unlock(&vcpu->mutex);
+ }
++EXPORT_SYMBOL_GPL(vcpu_put);
+
+ static void ack_flush(void *_completed)
+ {
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-08-10 12:55 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-08-10 12:55 UTC (permalink / raw
To: gentoo-commits
commit: 77a30b98a82b92f4edee8de7f15ac9022397d4a7
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Aug 10 12:55:32 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Aug 10 12:55:32 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=77a30b98
Linux patch 4.1.30
0000_README | 4 +
1029_linux-4.1.30.patch | 1516 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1520 insertions(+)
diff --git a/0000_README b/0000_README
index a9101d3..f04d74d 100644
--- a/0000_README
+++ b/0000_README
@@ -159,6 +159,10 @@ Patch: 1028_linux-4.1.29.patch
From: http://www.kernel.org
Desc: Linux 4.1.29
+Patch: 1029_linux-4.1.30.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.30
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1029_linux-4.1.30.patch b/1029_linux-4.1.30.patch
new file mode 100644
index 0000000..18a058f
--- /dev/null
+++ b/1029_linux-4.1.30.patch
@@ -0,0 +1,1516 @@
+diff --git a/Makefile b/Makefile
+index 76fa21fa16b8..137679c0cc49 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 29
++SUBLEVEL = 30
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/mach-mvebu/coherency.c b/arch/arm/mach-mvebu/coherency.c
+index e46e9ea1e187..0ee54cd9bf0b 100644
+--- a/arch/arm/mach-mvebu/coherency.c
++++ b/arch/arm/mach-mvebu/coherency.c
+@@ -116,22 +116,16 @@ static void __init armada_370_coherency_init(struct device_node *np)
+ }
+
+ /*
+- * This ioremap hook is used on Armada 375/38x to ensure that PCIe
+- * memory areas are mapped as MT_UNCACHED instead of MT_DEVICE. This
+- * is needed as a workaround for a deadlock issue between the PCIe
+- * interface and the cache controller.
++ * This ioremap hook is used on Armada 375/38x to ensure that all MMIO
++ * areas are mapped as MT_UNCACHED instead of MT_DEVICE. This is
++ * needed for the HW I/O coherency mechanism to work properly without
++ * deadlock.
+ */
+ static void __iomem *
+-armada_pcie_wa_ioremap_caller(phys_addr_t phys_addr, size_t size,
+- unsigned int mtype, void *caller)
++armada_wa_ioremap_caller(phys_addr_t phys_addr, size_t size,
++ unsigned int mtype, void *caller)
+ {
+- struct resource pcie_mem;
+-
+- mvebu_mbus_get_pcie_mem_aperture(&pcie_mem);
+-
+- if (pcie_mem.start <= phys_addr && (phys_addr + size) <= pcie_mem.end)
+- mtype = MT_UNCACHED;
+-
++ mtype = MT_UNCACHED;
+ return __arm_ioremap_caller(phys_addr, size, mtype, caller);
+ }
+
+@@ -140,7 +134,7 @@ static void __init armada_375_380_coherency_init(struct device_node *np)
+ struct device_node *cache_dn;
+
+ coherency_cpu_base = of_iomap(np, 0);
+- arch_ioremap_caller = armada_pcie_wa_ioremap_caller;
++ arch_ioremap_caller = armada_wa_ioremap_caller;
+
+ /*
+ * We should switch the PL310 to I/O coherency mode only if
+diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
+index 49b52035226c..be73c491182b 100644
+--- a/arch/mips/kernel/setup.c
++++ b/arch/mips/kernel/setup.c
+@@ -686,9 +686,6 @@ static void __init arch_mem_init(char **cmdline_p)
+ for_each_memblock(reserved, reg)
+ if (reg->size != 0)
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
+-
+- reserve_bootmem_region(__pa_symbol(&__nosave_begin),
+- __pa_symbol(&__nosave_end)); /* Reserve for hibernation */
+ }
+
+ static void __init resource_init(void)
+diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
+index 71c7ace855d7..1d71181dcc04 100644
+--- a/arch/sparc/mm/init_64.c
++++ b/arch/sparc/mm/init_64.c
+@@ -1301,18 +1301,10 @@ static int __init numa_parse_sun4u(void)
+
+ static int __init bootmem_init_numa(void)
+ {
+- int i, j;
+ int err = -1;
+
+ numadbg("bootmem_init_numa()\n");
+
+- /* Some sane defaults for numa latency values */
+- for (i = 0; i < MAX_NUMNODES; i++) {
+- for (j = 0; j < MAX_NUMNODES; j++)
+- numa_latency[i][j] = (i == j) ?
+- LOCAL_DISTANCE : REMOTE_DISTANCE;
+- }
+-
+ if (numa_enabled) {
+ if (tlb_type == hypervisor)
+ err = numa_parse_mdesc();
+diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
+index fe9f0b79a18b..1390ecd8392a 100644
+--- a/arch/x86/kernel/early-quirks.c
++++ b/arch/x86/kernel/early-quirks.c
+@@ -11,7 +11,11 @@
+
+ #include <linux/pci.h>
+ #include <linux/acpi.h>
++#include <linux/delay.h>
++#include <linux/dmi.h>
+ #include <linux/pci_ids.h>
++#include <linux/bcma/bcma.h>
++#include <linux/bcma/bcma_regs.h>
+ #include <drm/i915_drm.h>
+ #include <asm/pci-direct.h>
+ #include <asm/dma.h>
+@@ -21,6 +25,9 @@
+ #include <asm/iommu.h>
+ #include <asm/gart.h>
+ #include <asm/irq_remapping.h>
++#include <asm/early_ioremap.h>
++
++#define dev_err(msg) pr_err("pci 0000:%02x:%02x.%d: %s", bus, slot, func, msg)
+
+ static void __init fix_hypertransport_config(int num, int slot, int func)
+ {
+@@ -76,6 +83,13 @@ static void __init nvidia_bugs(int num, int slot, int func)
+ #ifdef CONFIG_ACPI
+ #ifdef CONFIG_X86_IO_APIC
+ /*
++ * Only applies to Nvidia root ports (bus 0) and not to
++ * Nvidia graphics cards with PCI ports on secondary buses.
++ */
++ if (num)
++ return;
++
++ /*
+ * All timer overrides on Nvidia are
+ * wrong unless HPET is enabled.
+ * Unfortunately that's not true on many Asus boards.
+@@ -588,6 +602,61 @@ static void __init force_disable_hpet(int num, int slot, int func)
+ #endif
+ }
+
++#define BCM4331_MMIO_SIZE 16384
++#define BCM4331_PM_CAP 0x40
++#define bcma_aread32(reg) ioread32(mmio + 1 * BCMA_CORE_SIZE + reg)
++#define bcma_awrite32(reg, val) iowrite32(val, mmio + 1 * BCMA_CORE_SIZE + reg)
++
++static void __init apple_airport_reset(int bus, int slot, int func)
++{
++ void __iomem *mmio;
++ u16 pmcsr;
++ u64 addr;
++ int i;
++
++ if (!dmi_match(DMI_SYS_VENDOR, "Apple Inc."))
++ return;
++
++ /* Card may have been put into PCI_D3hot by grub quirk */
++ pmcsr = read_pci_config_16(bus, slot, func, BCM4331_PM_CAP + PCI_PM_CTRL);
++
++ if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) {
++ pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
++ write_pci_config_16(bus, slot, func, BCM4331_PM_CAP + PCI_PM_CTRL, pmcsr);
++ mdelay(10);
++
++ pmcsr = read_pci_config_16(bus, slot, func, BCM4331_PM_CAP + PCI_PM_CTRL);
++ if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) {
++ dev_err("Cannot power up Apple AirPort card\n");
++ return;
++ }
++ }
++
++ addr = read_pci_config(bus, slot, func, PCI_BASE_ADDRESS_0);
++ addr |= (u64)read_pci_config(bus, slot, func, PCI_BASE_ADDRESS_1) << 32;
++ addr &= PCI_BASE_ADDRESS_MEM_MASK;
++
++ mmio = early_ioremap(addr, BCM4331_MMIO_SIZE);
++ if (!mmio) {
++ dev_err("Cannot iomap Apple AirPort card\n");
++ return;
++ }
++
++ pr_info("Resetting Apple AirPort card (left enabled by EFI)\n");
++
++ for (i = 0; bcma_aread32(BCMA_RESET_ST) && i < 30; i++)
++ udelay(10);
++
++ bcma_awrite32(BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
++ bcma_aread32(BCMA_RESET_CTL);
++ udelay(1);
++
++ bcma_awrite32(BCMA_RESET_CTL, 0);
++ bcma_aread32(BCMA_RESET_CTL);
++ udelay(10);
++
++ early_iounmap(mmio, BCM4331_MMIO_SIZE);
++}
+
+ #define QFLAG_APPLY_ONCE 0x1
+ #define QFLAG_APPLIED 0x2
+@@ -601,12 +670,6 @@ struct chipset {
+ void (*f)(int num, int slot, int func);
+ };
+
+-/*
+- * Only works for devices on the root bus. If you add any devices
+- * not on bus 0 readd another loop level in early_quirks(). But
+- * be careful because at least the Nvidia quirk here relies on
+- * only matching on bus 0.
+- */
+ static struct chipset early_qrk[] __initdata = {
+ { PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
+ PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, nvidia_bugs },
+@@ -632,9 +695,13 @@ static struct chipset early_qrk[] __initdata = {
+ */
+ { PCI_VENDOR_ID_INTEL, 0x0f00,
+ PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet},
++ { PCI_VENDOR_ID_BROADCOM, 0x4331,
++ PCI_CLASS_NETWORK_OTHER, PCI_ANY_ID, 0, apple_airport_reset},
+ {}
+ };
+
++static void __init early_pci_scan_bus(int bus);
++
+ /**
+ * check_dev_quirk - apply early quirks to a given PCI device
+ * @num: bus number
+@@ -643,7 +710,7 @@ static struct chipset early_qrk[] __initdata = {
+ *
+ * Check the vendor & device ID against the early quirks table.
+ *
+- * If the device is single function, let early_quirks() know so we don't
++ * If the device is single function, let early_pci_scan_bus() know so we don't
+ * poke at this device again.
+ */
+ static int __init check_dev_quirk(int num, int slot, int func)
+@@ -652,6 +719,7 @@ static int __init check_dev_quirk(int num, int slot, int func)
+ u16 vendor;
+ u16 device;
+ u8 type;
++ u8 sec;
+ int i;
+
+ class = read_pci_config_16(num, slot, func, PCI_CLASS_DEVICE);
+@@ -679,25 +747,36 @@ static int __init check_dev_quirk(int num, int slot, int func)
+
+ type = read_pci_config_byte(num, slot, func,
+ PCI_HEADER_TYPE);
++
++ if ((type & 0x7f) == PCI_HEADER_TYPE_BRIDGE) {
++ sec = read_pci_config_byte(num, slot, func, PCI_SECONDARY_BUS);
++ if (sec > num)
++ early_pci_scan_bus(sec);
++ }
++
+ if (!(type & 0x80))
+ return -1;
+
+ return 0;
+ }
+
+-void __init early_quirks(void)
++static void __init early_pci_scan_bus(int bus)
+ {
+ int slot, func;
+
+- if (!early_pci_allowed())
+- return;
+-
+ /* Poor man's PCI discovery */
+- /* Only scan the root bus */
+ for (slot = 0; slot < 32; slot++)
+ for (func = 0; func < 8; func++) {
+ /* Only probe function 0 on single fn devices */
+- if (check_dev_quirk(0, slot, func))
++ if (check_dev_quirk(bus, slot, func))
+ break;
+ }
+ }
++
++void __init early_quirks(void)
++{
++ if (!early_pci_allowed())
++ return;
++
++ early_pci_scan_bus(0);
++}
+diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
+index e0064d180f04..9daf46bf3a28 100644
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -4138,6 +4138,12 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ */
+ { "ST380013AS", "3.20", ATA_HORKAGE_MAX_SEC_1024 },
+
++ /*
++ * Device times out with higher max sects.
++ * https://bugzilla.kernel.org/show_bug.cgi?id=121671
++ */
++ { "LITEON CX1-JB256-HP", NULL, ATA_HORKAGE_MAX_SEC_1024 },
++
+ /* Devices we expect to fail diagnostics */
+
+ /* Devices where NCQ should be avoided */
+diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
+index 15f2b2e242ea..d492c2eddd7b 100644
+--- a/drivers/bcma/bcma_private.h
++++ b/drivers/bcma/bcma_private.h
+@@ -8,8 +8,6 @@
+ #include <linux/bcma/bcma.h>
+ #include <linux/delay.h>
+
+-#define BCMA_CORE_SIZE 0x1000
+-
+ #define bcma_err(bus, fmt, ...) \
+ pr_err("bus%d: " fmt, (bus)->num, ##__VA_ARGS__)
+ #define bcma_warn(bus, fmt, ...) \
+diff --git a/drivers/gpu/drm/i915/i915_gem_shrinker.c b/drivers/gpu/drm/i915/i915_gem_shrinker.c
+index f7929e769250..7ab9cc456dd2 100644
+--- a/drivers/gpu/drm/i915/i915_gem_shrinker.c
++++ b/drivers/gpu/drm/i915/i915_gem_shrinker.c
+@@ -39,7 +39,7 @@ static bool mutex_is_locked_by(struct mutex *mutex, struct task_struct *task)
+ if (!mutex_is_locked(mutex))
+ return false;
+
+-#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_MUTEXES)
++#if defined(CONFIG_DEBUG_MUTEXES) || defined(CONFIG_MUTEX_SPIN_ON_OWNER)
+ return mutex->owner == task;
+ #else
+ /* Since UP may be pre-empted, we cannot assume that we own the lock */
+diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
+index 8d9b7de25613..0c4fd830d64b 100644
+--- a/drivers/gpu/drm/ttm/ttm_bo.c
++++ b/drivers/gpu/drm/ttm/ttm_bo.c
+@@ -1000,9 +1000,9 @@ out_unlock:
+ return ret;
+ }
+
+-static bool ttm_bo_mem_compat(struct ttm_placement *placement,
+- struct ttm_mem_reg *mem,
+- uint32_t *new_flags)
++bool ttm_bo_mem_compat(struct ttm_placement *placement,
++ struct ttm_mem_reg *mem,
++ uint32_t *new_flags)
+ {
+ int i;
+
+@@ -1034,6 +1034,7 @@ static bool ttm_bo_mem_compat(struct ttm_placement *placement,
+
+ return false;
+ }
++EXPORT_SYMBOL(ttm_bo_mem_compat);
+
+ int ttm_bo_validate(struct ttm_buffer_object *bo,
+ struct ttm_placement *placement,
+diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
+index 61c761156371..a450c4ee1217 100644
+--- a/drivers/input/joystick/xpad.c
++++ b/drivers/input/joystick/xpad.c
+@@ -1025,6 +1025,9 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
+ int ep_irq_in_idx;
+ int i, error;
+
++ if (intf->cur_altsetting->desc.bNumEndpoints != 2)
++ return -ENODEV;
++
+ for (i = 0; xpad_device[i].idVendor; i++) {
+ if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
+ (le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
+diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
+index a50750ce511d..ce51bf19cef3 100644
+--- a/drivers/media/usb/airspy/airspy.c
++++ b/drivers/media/usb/airspy/airspy.c
+@@ -1072,7 +1072,7 @@ static int airspy_probe(struct usb_interface *intf,
+ if (ret) {
+ dev_err(s->dev, "Failed to register as video device (%d)\n",
+ ret);
+- goto err_unregister_v4l2_dev;
++ goto err_free_controls;
+ }
+ dev_info(s->dev, "Registered as %s\n",
+ video_device_node_name(&s->vdev));
+@@ -1081,7 +1081,6 @@ static int airspy_probe(struct usb_interface *intf,
+
+ err_free_controls:
+ v4l2_ctrl_handler_free(&s->hdl);
+-err_unregister_v4l2_dev:
+ v4l2_device_unregister(&s->v4l2_dev);
+ err_free_mem:
+ kfree(s);
+diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
+index 3705c7e63521..ccefd6ca9c99 100644
+--- a/drivers/mmc/card/block.c
++++ b/drivers/mmc/card/block.c
+@@ -1664,8 +1664,8 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq,
+
+ packed_cmd_hdr = packed->cmd_hdr;
+ memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr));
+- packed_cmd_hdr[0] = (packed->nr_entries << 16) |
+- (PACKED_CMD_WR << 8) | PACKED_CMD_VER;
++ packed_cmd_hdr[0] = cpu_to_le32((packed->nr_entries << 16) |
++ (PACKED_CMD_WR << 8) | PACKED_CMD_VER);
+ hdr_blocks = mmc_large_sector(card) ? 8 : 1;
+
+ /*
+@@ -1679,14 +1679,14 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq,
+ ((brq->data.blocks * brq->data.blksz) >=
+ card->ext_csd.data_tag_unit_size);
+ /* Argument of CMD23 */
+- packed_cmd_hdr[(i * 2)] =
++ packed_cmd_hdr[(i * 2)] = cpu_to_le32(
+ (do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) |
+ (do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) |
+- blk_rq_sectors(prq);
++ blk_rq_sectors(prq));
+ /* Argument of CMD18 or CMD25 */
+- packed_cmd_hdr[((i * 2)) + 1] =
++ packed_cmd_hdr[((i * 2)) + 1] = cpu_to_le32(
+ mmc_card_blockaddr(card) ?
+- blk_rq_pos(prq) : blk_rq_pos(prq) << 9;
++ blk_rq_pos(prq) : blk_rq_pos(prq) << 9);
+ packed->blocks += blk_rq_sectors(prq);
+ i++;
+ }
+diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
+index e4c079612100..40161dacc9c7 100644
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -222,7 +222,7 @@
+ /* Various constants */
+
+ /* Coalescing */
+-#define MVNETA_TXDONE_COAL_PKTS 1
++#define MVNETA_TXDONE_COAL_PKTS 0 /* interrupt per packet */
+ #define MVNETA_RX_COAL_PKTS 32
+ #define MVNETA_RX_COAL_USEC 100
+
+diff --git a/drivers/pps/clients/pps_parport.c b/drivers/pps/clients/pps_parport.c
+index 38a8bbe74810..83797d89c30f 100644
+--- a/drivers/pps/clients/pps_parport.c
++++ b/drivers/pps/clients/pps_parport.c
+@@ -195,7 +195,7 @@ static void parport_detach(struct parport *port)
+ struct pps_client_pp *device;
+
+ /* FIXME: oooh, this is ugly! */
+- if (strcmp(pardev->name, KBUILD_MODNAME))
++ if (!pardev || strcmp(pardev->name, KBUILD_MODNAME))
+ /* not our port */
+ return;
+
+diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
+index 8a89f6e7715d..8353ce1991b8 100644
+--- a/drivers/tty/vt/keyboard.c
++++ b/drivers/tty/vt/keyboard.c
+@@ -365,34 +365,22 @@ static void to_utf8(struct vc_data *vc, uint c)
+
+ static void do_compute_shiftstate(void)
+ {
+- unsigned int i, j, k, sym, val;
++ unsigned int k, sym, val;
+
+ shift_state = 0;
+ memset(shift_down, 0, sizeof(shift_down));
+
+- for (i = 0; i < ARRAY_SIZE(key_down); i++) {
+-
+- if (!key_down[i])
++ for_each_set_bit(k, key_down, min(NR_KEYS, KEY_CNT)) {
++ sym = U(key_maps[0][k]);
++ if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
+ continue;
+
+- k = i * BITS_PER_LONG;
+-
+- for (j = 0; j < BITS_PER_LONG; j++, k++) {
+-
+- if (!test_bit(k, key_down))
+- continue;
++ val = KVAL(sym);
++ if (val == KVAL(K_CAPSSHIFT))
++ val = KVAL(K_SHIFT);
+
+- sym = U(key_maps[0][k]);
+- if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
+- continue;
+-
+- val = KVAL(sym);
+- if (val == KVAL(K_CAPSSHIFT))
+- val = KVAL(K_SHIFT);
+-
+- shift_down[val]++;
+- shift_state |= (1 << val);
+- }
++ shift_down[val]++;
++ shift_state |= BIT(val);
+ }
+ }
+
+diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
+index a2b1d7ce3e1a..977236a46aa2 100644
+--- a/fs/overlayfs/dir.c
++++ b/fs/overlayfs/dir.c
+@@ -511,6 +511,7 @@ static int ovl_remove_and_whiteout(struct dentry *dentry, bool is_dir)
+ struct dentry *upper;
+ struct dentry *opaquedir = NULL;
+ int err;
++ int flags = 0;
+
+ if (WARN_ON(!workdir))
+ return -EROFS;
+@@ -540,46 +541,39 @@ static int ovl_remove_and_whiteout(struct dentry *dentry, bool is_dir)
+ if (err)
+ goto out_dput;
+
+- whiteout = ovl_whiteout(workdir, dentry);
+- err = PTR_ERR(whiteout);
+- if (IS_ERR(whiteout))
++ upper = lookup_one_len(dentry->d_name.name, upperdir,
++ dentry->d_name.len);
++ err = PTR_ERR(upper);
++ if (IS_ERR(upper))
+ goto out_unlock;
+
+- upper = ovl_dentry_upper(dentry);
+- if (!upper) {
+- upper = lookup_one_len(dentry->d_name.name, upperdir,
+- dentry->d_name.len);
+- err = PTR_ERR(upper);
+- if (IS_ERR(upper))
+- goto kill_whiteout;
+-
+- err = ovl_do_rename(wdir, whiteout, udir, upper, 0);
+- dput(upper);
+- if (err)
+- goto kill_whiteout;
+- } else {
+- int flags = 0;
++ err = -ESTALE;
++ if ((opaquedir && upper != opaquedir) ||
++ (!opaquedir && ovl_dentry_upper(dentry) &&
++ upper != ovl_dentry_upper(dentry))) {
++ goto out_dput_upper;
++ }
+
+- if (opaquedir)
+- upper = opaquedir;
+- err = -ESTALE;
+- if (upper->d_parent != upperdir)
+- goto kill_whiteout;
++ whiteout = ovl_whiteout(workdir, dentry);
++ err = PTR_ERR(whiteout);
++ if (IS_ERR(whiteout))
++ goto out_dput_upper;
+
+- if (is_dir)
+- flags |= RENAME_EXCHANGE;
++ if (d_is_dir(upper))
++ flags = RENAME_EXCHANGE;
+
+- err = ovl_do_rename(wdir, whiteout, udir, upper, flags);
+- if (err)
+- goto kill_whiteout;
++ err = ovl_do_rename(wdir, whiteout, udir, upper, flags);
++ if (err)
++ goto kill_whiteout;
++ if (flags)
++ ovl_cleanup(wdir, upper);
+
+- if (is_dir)
+- ovl_cleanup(wdir, upper);
+- }
+ ovl_dentry_version_inc(dentry->d_parent);
+ out_d_drop:
+ d_drop(dentry);
+ dput(whiteout);
++out_dput_upper:
++ dput(upper);
+ out_unlock:
+ unlock_rename(workdir, upperdir);
+ out_dput:
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index edd2a4a5fd3c..97fd65700ae2 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -67,6 +67,10 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr)
+ upperdentry = ovl_dentry_upper(dentry);
+
+ mutex_lock(&upperdentry->d_inode->i_mutex);
++
++ if (attr->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
++ attr->ia_valid &= ~ATTR_MODE;
++
+ err = notify_change(upperdentry, attr, NULL);
+ if (!err)
+ ovl_copyattr(upperdentry->d_inode, dentry->d_inode);
+@@ -411,12 +415,11 @@ struct inode *ovl_new_inode(struct super_block *sb, umode_t mode,
+ if (!inode)
+ return NULL;
+
+- mode &= S_IFMT;
+-
+ inode->i_ino = get_next_ino();
+ inode->i_mode = mode;
+ inode->i_flags |= S_NOATIME | S_NOCMTIME;
+
++ mode &= S_IFMT;
+ switch (mode) {
+ case S_IFDIR:
+ inode->i_private = oe;
+diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
+index ea5a40b06e3a..983540910ba8 100644
+--- a/fs/overlayfs/overlayfs.h
++++ b/fs/overlayfs/overlayfs.h
+@@ -181,6 +181,7 @@ static inline void ovl_copyattr(struct inode *from, struct inode *to)
+ {
+ to->i_uid = from->i_uid;
+ to->i_gid = from->i_gid;
++ to->i_mode = from->i_mode;
+ }
+
+ /* dir.c */
+diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
+index 8bd374d3cf21..13671bc9a288 100644
+--- a/include/asm-generic/vmlinux.lds.h
++++ b/include/asm-generic/vmlinux.lds.h
+@@ -521,15 +521,19 @@
+
+ #define INIT_TEXT \
+ *(.init.text) \
++ *(.text.startup) \
+ MEM_DISCARD(init.text)
+
+ #define EXIT_DATA \
+ *(.exit.data) \
++ *(.fini_array) \
++ *(.dtors) \
+ MEM_DISCARD(exit.data) \
+ MEM_DISCARD(exit.rodata)
+
+ #define EXIT_TEXT \
+ *(.exit.text) \
++ *(.text.exit) \
+ MEM_DISCARD(exit.text)
+
+ #define EXIT_CALL \
+diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
+index c768ddfbe53c..b7bfa513e6ed 100644
+--- a/include/drm/ttm/ttm_bo_api.h
++++ b/include/drm/ttm/ttm_bo_api.h
+@@ -316,6 +316,20 @@ ttm_bo_reference(struct ttm_buffer_object *bo)
+ */
+ extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy,
+ bool interruptible, bool no_wait);
++
++/**
++ * ttm_bo_mem_compat - Check if proposed placement is compatible with a bo
++ *
++ * @placement: Return immediately if buffer is busy.
++ * @mem: The struct ttm_mem_reg indicating the region where the bo resides
++ * @new_flags: Describes compatible placement found
++ *
++ * Returns true if the placement is compatible
++ */
++extern bool ttm_bo_mem_compat(struct ttm_placement *placement,
++ struct ttm_mem_reg *mem,
++ uint32_t *new_flags);
++
+ /**
+ * ttm_bo_validate
+ *
+diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h
+index e34f906647d3..567fb450fbfe 100644
+--- a/include/linux/bcma/bcma.h
++++ b/include/linux/bcma/bcma.h
+@@ -154,6 +154,7 @@ struct bcma_host_ops {
+ #define BCMA_CORE_DEFAULT 0xFFF
+
+ #define BCMA_MAX_NR_CORES 16
++#define BCMA_CORE_SIZE 0x1000
+
+ /* Chip IDs of PCIe devices */
+ #define BCMA_CHIP_ID_BCM4313 0x4313
+diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
+index 7741efa43b35..cc615e273f80 100644
+--- a/include/linux/netfilter/x_tables.h
++++ b/include/linux/netfilter/x_tables.h
+@@ -243,6 +243,10 @@ int xt_check_entry_offsets(const void *base, const char *elems,
+ unsigned int target_offset,
+ unsigned int next_offset);
+
++unsigned int *xt_alloc_entry_offsets(unsigned int size);
++bool xt_find_jump_offset(const unsigned int *offsets,
++ unsigned int target, unsigned int size);
++
+ int xt_check_match(struct xt_mtchk_param *, unsigned int size, u_int8_t proto,
+ bool inv_proto);
+ int xt_check_target(struct xt_tgchk_param *, unsigned int size, u_int8_t proto,
+diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
+index 5d5174b59802..673dee29a9b9 100644
+--- a/include/linux/radix-tree.h
++++ b/include/linux/radix-tree.h
+@@ -382,6 +382,7 @@ static inline __must_check
+ void **radix_tree_iter_retry(struct radix_tree_iter *iter)
+ {
+ iter->next_index = iter->index;
++ iter->tags = 0;
+ return NULL;
+ }
+
+diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
+index 0075da74abf0..57d1acb91c56 100644
+--- a/kernel/time/posix-cpu-timers.c
++++ b/kernel/time/posix-cpu-timers.c
+@@ -784,6 +784,7 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp)
+ timer->it.cpu.expires = 0;
+ sample_to_timespec(timer->it_clock, timer->it.cpu.expires,
+ &itp->it_value);
++ return;
+ } else {
+ cpu_timer_sample_group(timer->it_clock, p, &now);
+ unlock_task_sighand(p, &flags);
+diff --git a/mm/compaction.c b/mm/compaction.c
+index 32c719a4bc3d..f93ada7403bf 100644
+--- a/mm/compaction.c
++++ b/mm/compaction.c
+@@ -948,13 +948,10 @@ static void isolate_freepages(struct compact_control *cc)
+ * pages on cc->migratepages. We stop searching if the migrate
+ * and free page scanners meet or enough free pages are isolated.
+ */
+- for (; block_start_pfn >= low_pfn &&
+- cc->nr_migratepages > cc->nr_freepages;
++ for (; block_start_pfn >= low_pfn;
+ block_end_pfn = block_start_pfn,
+ block_start_pfn -= pageblock_nr_pages,
+ isolate_start_pfn = block_start_pfn) {
+- unsigned long isolated;
+-
+ /*
+ * This can iterate a massively long zone without finding any
+ * suitable migration targets, so periodically check if we need
+@@ -978,43 +975,43 @@ static void isolate_freepages(struct compact_control *cc)
+ continue;
+
+ /* Found a block suitable for isolating free pages from. */
+- isolated = isolate_freepages_block(cc, &isolate_start_pfn,
+- block_end_pfn, freelist, false);
+- /* If isolation failed early, do not continue needlessly */
+- if (!isolated && isolate_start_pfn < block_end_pfn &&
+- cc->nr_migratepages > cc->nr_freepages)
+- break;
+-
+- /*
+- * Remember where the free scanner should restart next time,
+- * which is where isolate_freepages_block() left off.
+- * But if it scanned the whole pageblock, isolate_start_pfn
+- * now points at block_end_pfn, which is the start of the next
+- * pageblock.
+- * In that case we will however want to restart at the start
+- * of the previous pageblock.
+- */
+- cc->free_pfn = (isolate_start_pfn < block_end_pfn) ?
+- isolate_start_pfn :
+- block_start_pfn - pageblock_nr_pages;
++ isolate_freepages_block(cc, &isolate_start_pfn, block_end_pfn,
++ freelist, false);
+
+ /*
+- * isolate_freepages_block() might have aborted due to async
+- * compaction being contended
++ * If we isolated enough freepages, or aborted due to lock
++ * contention, terminate.
+ */
+- if (cc->contended)
++ if ((cc->nr_freepages >= cc->nr_migratepages)
++ || cc->contended) {
++ if (isolate_start_pfn >= block_end_pfn) {
++ /*
++ * Restart at previous pageblock if more
++ * freepages can be isolated next time.
++ */
++ isolate_start_pfn =
++ block_start_pfn - pageblock_nr_pages;
++ }
+ break;
++ } else if (isolate_start_pfn < block_end_pfn) {
++ /*
++ * If isolation failed early, do not continue
++ * needlessly.
++ */
++ break;
++ }
+ }
+
+ /* split_free_page does not map the pages */
+ map_pages(freelist);
+
+ /*
+- * If we crossed the migrate scanner, we want to keep it that way
+- * so that compact_finished() may detect this
++ * Record where the free scanner will restart next time. Either we
++ * broke from the loop and set isolate_start_pfn based on the last
++ * call to isolate_freepages_block(), or we met the migration scanner
++ * and the loop terminated due to isolate_start_pfn < low_pfn
+ */
+- if (block_start_pfn < low_pfn)
+- cc->free_pfn = cc->migrate_pfn;
++ cc->free_pfn = isolate_start_pfn;
+ }
+
+ /*
+diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
+index 4a3125836b64..ddc3573894b0 100644
+--- a/net/ceph/osdmap.c
++++ b/net/ceph/osdmap.c
+@@ -1192,6 +1192,115 @@ struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end)
+ }
+
+ /*
++ * Encoding order is (new_up_client, new_state, new_weight). Need to
++ * apply in the (new_weight, new_state, new_up_client) order, because
++ * an incremental map may look like e.g.
++ *
++ * new_up_client: { osd=6, addr=... } # set osd_state and addr
++ * new_state: { osd=6, xorstate=EXISTS } # clear osd_state
++ */
++static int decode_new_up_state_weight(void **p, void *end,
++ struct ceph_osdmap *map)
++{
++ void *new_up_client;
++ void *new_state;
++ void *new_weight_end;
++ u32 len;
++
++ new_up_client = *p;
++ ceph_decode_32_safe(p, end, len, e_inval);
++ len *= sizeof(u32) + sizeof(struct ceph_entity_addr);
++ ceph_decode_need(p, end, len, e_inval);
++ *p += len;
++
++ new_state = *p;
++ ceph_decode_32_safe(p, end, len, e_inval);
++ len *= sizeof(u32) + sizeof(u8);
++ ceph_decode_need(p, end, len, e_inval);
++ *p += len;
++
++ /* new_weight */
++ ceph_decode_32_safe(p, end, len, e_inval);
++ while (len--) {
++ s32 osd;
++ u32 w;
++
++ ceph_decode_need(p, end, 2*sizeof(u32), e_inval);
++ osd = ceph_decode_32(p);
++ w = ceph_decode_32(p);
++ BUG_ON(osd >= map->max_osd);
++ pr_info("osd%d weight 0x%x %s\n", osd, w,
++ w == CEPH_OSD_IN ? "(in)" :
++ (w == CEPH_OSD_OUT ? "(out)" : ""));
++ map->osd_weight[osd] = w;
++
++ /*
++ * If we are marking in, set the EXISTS, and clear the
++ * AUTOOUT and NEW bits.
++ */
++ if (w) {
++ map->osd_state[osd] |= CEPH_OSD_EXISTS;
++ map->osd_state[osd] &= ~(CEPH_OSD_AUTOOUT |
++ CEPH_OSD_NEW);
++ }
++ }
++ new_weight_end = *p;
++
++ /* new_state (up/down) */
++ *p = new_state;
++ len = ceph_decode_32(p);
++ while (len--) {
++ s32 osd;
++ u8 xorstate;
++ int ret;
++
++ osd = ceph_decode_32(p);
++ xorstate = ceph_decode_8(p);
++ if (xorstate == 0)
++ xorstate = CEPH_OSD_UP;
++ BUG_ON(osd >= map->max_osd);
++ if ((map->osd_state[osd] & CEPH_OSD_UP) &&
++ (xorstate & CEPH_OSD_UP))
++ pr_info("osd%d down\n", osd);
++ if ((map->osd_state[osd] & CEPH_OSD_EXISTS) &&
++ (xorstate & CEPH_OSD_EXISTS)) {
++ pr_info("osd%d does not exist\n", osd);
++ map->osd_weight[osd] = CEPH_OSD_IN;
++ ret = set_primary_affinity(map, osd,
++ CEPH_OSD_DEFAULT_PRIMARY_AFFINITY);
++ if (ret)
++ return ret;
++ memset(map->osd_addr + osd, 0, sizeof(*map->osd_addr));
++ map->osd_state[osd] = 0;
++ } else {
++ map->osd_state[osd] ^= xorstate;
++ }
++ }
++
++ /* new_up_client */
++ *p = new_up_client;
++ len = ceph_decode_32(p);
++ while (len--) {
++ s32 osd;
++ struct ceph_entity_addr addr;
++
++ osd = ceph_decode_32(p);
++ ceph_decode_copy(p, &addr, sizeof(addr));
++ ceph_decode_addr(&addr);
++ BUG_ON(osd >= map->max_osd);
++ pr_info("osd%d up\n", osd);
++ map->osd_state[osd] |= CEPH_OSD_EXISTS | CEPH_OSD_UP;
++ map->osd_addr[osd] = addr;
++ }
++
++ *p = new_weight_end;
++ return 0;
++
++e_inval:
++ return -EINVAL;
++}
++
++/*
+ * decode and apply an incremental map update.
+ */
+ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
+@@ -1290,49 +1399,10 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
+ __remove_pg_pool(&map->pg_pools, pi);
+ }
+
+- /* new_up */
+- ceph_decode_32_safe(p, end, len, e_inval);
+- while (len--) {
+- u32 osd;
+- struct ceph_entity_addr addr;
+- ceph_decode_32_safe(p, end, osd, e_inval);
+- ceph_decode_copy_safe(p, end, &addr, sizeof(addr), e_inval);
+- ceph_decode_addr(&addr);
+- pr_info("osd%d up\n", osd);
+- BUG_ON(osd >= map->max_osd);
+- map->osd_state[osd] |= CEPH_OSD_UP;
+- map->osd_addr[osd] = addr;
+- }
+-
+- /* new_state */
+- ceph_decode_32_safe(p, end, len, e_inval);
+- while (len--) {
+- u32 osd;
+- u8 xorstate;
+- ceph_decode_32_safe(p, end, osd, e_inval);
+- xorstate = **(u8 **)p;
+- (*p)++; /* clean flag */
+- if (xorstate == 0)
+- xorstate = CEPH_OSD_UP;
+- if (xorstate & CEPH_OSD_UP)
+- pr_info("osd%d down\n", osd);
+- if (osd < map->max_osd)
+- map->osd_state[osd] ^= xorstate;
+- }
+-
+- /* new_weight */
+- ceph_decode_32_safe(p, end, len, e_inval);
+- while (len--) {
+- u32 osd, off;
+- ceph_decode_need(p, end, sizeof(u32)*2, e_inval);
+- osd = ceph_decode_32(p);
+- off = ceph_decode_32(p);
+- pr_info("osd%d weight 0x%x %s\n", osd, off,
+- off == CEPH_OSD_IN ? "(in)" :
+- (off == CEPH_OSD_OUT ? "(out)" : ""));
+- if (osd < map->max_osd)
+- map->osd_weight[osd] = off;
+- }
++ /* new_up_client, new_state, new_weight */
++ err = decode_new_up_state_weight(p, end, map);
++ if (err)
++ goto bad;
+
+ /* new_pg_temp */
+ err = decode_new_pg_temp(p, end, map);
+diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
+index 2953ee9e5fa0..ebf5821caefb 100644
+--- a/net/ipv4/netfilter/arp_tables.c
++++ b/net/ipv4/netfilter/arp_tables.c
+@@ -362,23 +362,12 @@ static inline bool unconditional(const struct arpt_entry *e)
+ memcmp(&e->arp, &uncond, sizeof(uncond)) == 0;
+ }
+
+-static bool find_jump_target(const struct xt_table_info *t,
+- const struct arpt_entry *target)
+-{
+- struct arpt_entry *iter;
+-
+- xt_entry_foreach(iter, t->entries, t->size) {
+- if (iter == target)
+- return true;
+- }
+- return false;
+-}
+-
+ /* Figures out from what hook each rule can be called: returns 0 if
+ * there are loops. Puts hook bitmask in comefrom.
+ */
+ static int mark_source_chains(const struct xt_table_info *newinfo,
+- unsigned int valid_hooks, void *entry0)
++ unsigned int valid_hooks, void *entry0,
++ unsigned int *offsets)
+ {
+ unsigned int hook;
+
+@@ -467,10 +456,11 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
+ /* This a jump; chase it. */
+ duprintf("Jump rule %u -> %u\n",
+ pos, newpos);
++ if (!xt_find_jump_offset(offsets, newpos,
++ newinfo->number))
++ return 0;
+ e = (struct arpt_entry *)
+ (entry0 + newpos);
+- if (!find_jump_target(newinfo, e))
+- return 0;
+ } else {
+ /* ... this is a fallthru */
+ newpos = pos + e->next_offset;
+@@ -630,6 +620,7 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0,
+ const struct arpt_replace *repl)
+ {
+ struct arpt_entry *iter;
++ unsigned int *offsets;
+ unsigned int i;
+ int ret = 0;
+
+@@ -643,6 +634,9 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0,
+ }
+
+ duprintf("translate_table: size %u\n", newinfo->size);
++ offsets = xt_alloc_entry_offsets(newinfo->number);
++ if (!offsets)
++ return -ENOMEM;
+ i = 0;
+
+ /* Walk through entries, checking offsets. */
+@@ -653,20 +647,21 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0,
+ repl->underflow,
+ repl->valid_hooks);
+ if (ret != 0)
+- break;
++ goto out_free;
++ if (i < repl->num_entries)
++ offsets[i] = (void *)iter - entry0;
+ ++i;
+ if (strcmp(arpt_get_target(iter)->u.user.name,
+ XT_ERROR_TARGET) == 0)
+ ++newinfo->stacksize;
+ }
+ duprintf("translate_table: ARPT_ENTRY_ITERATE gives %d\n", ret);
+- if (ret != 0)
+- return ret;
+
++ ret = -EINVAL;
+ if (i != repl->num_entries) {
+ duprintf("translate_table: %u not %u entries\n",
+ i, repl->num_entries);
+- return -EINVAL;
++ goto out_free;
+ }
+
+ /* Check hooks all assigned */
+@@ -677,17 +672,20 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0,
+ if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
+ duprintf("Invalid hook entry %u %u\n",
+ i, repl->hook_entry[i]);
+- return -EINVAL;
++ goto out_free;
+ }
+ if (newinfo->underflow[i] == 0xFFFFFFFF) {
+ duprintf("Invalid underflow %u %u\n",
+ i, repl->underflow[i]);
+- return -EINVAL;
++ goto out_free;
+ }
+ }
+
+- if (!mark_source_chains(newinfo, repl->valid_hooks, entry0))
+- return -ELOOP;
++ if (!mark_source_chains(newinfo, repl->valid_hooks, entry0, offsets)) {
++ ret = -ELOOP;
++ goto out_free;
++ }
++ kvfree(offsets);
+
+ /* Finally, each sanity check must pass */
+ i = 0;
+@@ -714,6 +712,9 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0,
+ }
+
+ return ret;
++ out_free:
++ kvfree(offsets);
++ return ret;
+ }
+
+ static void get_counters(const struct xt_table_info *t,
+diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
+index 3bcf28bf1525..8e729cba1e59 100644
+--- a/net/ipv4/netfilter/ip_tables.c
++++ b/net/ipv4/netfilter/ip_tables.c
+@@ -438,23 +438,12 @@ ipt_do_table(struct sk_buff *skb,
+ #endif
+ }
+
+-static bool find_jump_target(const struct xt_table_info *t,
+- const struct ipt_entry *target)
+-{
+- struct ipt_entry *iter;
+-
+- xt_entry_foreach(iter, t->entries, t->size) {
+- if (iter == target)
+- return true;
+- }
+- return false;
+-}
+-
+ /* Figures out from what hook each rule can be called: returns 0 if
+ there are loops. Puts hook bitmask in comefrom. */
+ static int
+ mark_source_chains(const struct xt_table_info *newinfo,
+- unsigned int valid_hooks, void *entry0)
++ unsigned int valid_hooks, void *entry0,
++ unsigned int *offsets)
+ {
+ unsigned int hook;
+
+@@ -547,10 +536,11 @@ mark_source_chains(const struct xt_table_info *newinfo,
+ /* This a jump; chase it. */
+ duprintf("Jump rule %u -> %u\n",
+ pos, newpos);
++ if (!xt_find_jump_offset(offsets, newpos,
++ newinfo->number))
++ return 0;
+ e = (struct ipt_entry *)
+ (entry0 + newpos);
+- if (!find_jump_target(newinfo, e))
+- return 0;
+ } else {
+ /* ... this is a fallthru */
+ newpos = pos + e->next_offset;
+@@ -797,6 +787,7 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ const struct ipt_replace *repl)
+ {
+ struct ipt_entry *iter;
++ unsigned int *offsets;
+ unsigned int i;
+ int ret = 0;
+
+@@ -810,6 +801,9 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ }
+
+ duprintf("translate_table: size %u\n", newinfo->size);
++ offsets = xt_alloc_entry_offsets(newinfo->number);
++ if (!offsets)
++ return -ENOMEM;
+ i = 0;
+ /* Walk through entries, checking offsets. */
+ xt_entry_foreach(iter, entry0, newinfo->size) {
+@@ -819,17 +813,20 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ repl->underflow,
+ repl->valid_hooks);
+ if (ret != 0)
+- return ret;
++ goto out_free;
++ if (i < repl->num_entries)
++ offsets[i] = (void *)iter - entry0;
+ ++i;
+ if (strcmp(ipt_get_target(iter)->u.user.name,
+ XT_ERROR_TARGET) == 0)
+ ++newinfo->stacksize;
+ }
+
++ ret = -EINVAL;
+ if (i != repl->num_entries) {
+ duprintf("translate_table: %u not %u entries\n",
+ i, repl->num_entries);
+- return -EINVAL;
++ goto out_free;
+ }
+
+ /* Check hooks all assigned */
+@@ -840,17 +837,20 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
+ duprintf("Invalid hook entry %u %u\n",
+ i, repl->hook_entry[i]);
+- return -EINVAL;
++ goto out_free;
+ }
+ if (newinfo->underflow[i] == 0xFFFFFFFF) {
+ duprintf("Invalid underflow %u %u\n",
+ i, repl->underflow[i]);
+- return -EINVAL;
++ goto out_free;
+ }
+ }
+
+- if (!mark_source_chains(newinfo, repl->valid_hooks, entry0))
+- return -ELOOP;
++ if (!mark_source_chains(newinfo, repl->valid_hooks, entry0, offsets)) {
++ ret = -ELOOP;
++ goto out_free;
++ }
++ kvfree(offsets);
+
+ /* Finally, each sanity check must pass */
+ i = 0;
+@@ -877,6 +877,9 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ }
+
+ return ret;
++ out_free:
++ kvfree(offsets);
++ return ret;
+ }
+
+ static void
+diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
+index 5254d76dfce8..98e99fa833f1 100644
+--- a/net/ipv6/netfilter/ip6_tables.c
++++ b/net/ipv6/netfilter/ip6_tables.c
+@@ -451,23 +451,12 @@ ip6t_do_table(struct sk_buff *skb,
+ #endif
+ }
+
+-static bool find_jump_target(const struct xt_table_info *t,
+- const struct ip6t_entry *target)
+-{
+- struct ip6t_entry *iter;
+-
+- xt_entry_foreach(iter, t->entries, t->size) {
+- if (iter == target)
+- return true;
+- }
+- return false;
+-}
+-
+ /* Figures out from what hook each rule can be called: returns 0 if
+ there are loops. Puts hook bitmask in comefrom. */
+ static int
+ mark_source_chains(const struct xt_table_info *newinfo,
+- unsigned int valid_hooks, void *entry0)
++ unsigned int valid_hooks, void *entry0,
++ unsigned int *offsets)
+ {
+ unsigned int hook;
+
+@@ -560,10 +549,11 @@ mark_source_chains(const struct xt_table_info *newinfo,
+ /* This a jump; chase it. */
+ duprintf("Jump rule %u -> %u\n",
+ pos, newpos);
++ if (!xt_find_jump_offset(offsets, newpos,
++ newinfo->number))
++ return 0;
+ e = (struct ip6t_entry *)
+ (entry0 + newpos);
+- if (!find_jump_target(newinfo, e))
+- return 0;
+ } else {
+ /* ... this is a fallthru */
+ newpos = pos + e->next_offset;
+@@ -810,6 +800,7 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ const struct ip6t_replace *repl)
+ {
+ struct ip6t_entry *iter;
++ unsigned int *offsets;
+ unsigned int i;
+ int ret = 0;
+
+@@ -823,6 +814,9 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ }
+
+ duprintf("translate_table: size %u\n", newinfo->size);
++ offsets = xt_alloc_entry_offsets(newinfo->number);
++ if (!offsets)
++ return -ENOMEM;
+ i = 0;
+ /* Walk through entries, checking offsets. */
+ xt_entry_foreach(iter, entry0, newinfo->size) {
+@@ -832,17 +826,20 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ repl->underflow,
+ repl->valid_hooks);
+ if (ret != 0)
+- return ret;
++ goto out_free;
++ if (i < repl->num_entries)
++ offsets[i] = (void *)iter - entry0;
+ ++i;
+ if (strcmp(ip6t_get_target(iter)->u.user.name,
+ XT_ERROR_TARGET) == 0)
+ ++newinfo->stacksize;
+ }
+
++ ret = -EINVAL;
+ if (i != repl->num_entries) {
+ duprintf("translate_table: %u not %u entries\n",
+ i, repl->num_entries);
+- return -EINVAL;
++ goto out_free;
+ }
+
+ /* Check hooks all assigned */
+@@ -853,17 +850,20 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
+ duprintf("Invalid hook entry %u %u\n",
+ i, repl->hook_entry[i]);
+- return -EINVAL;
++ goto out_free;
+ }
+ if (newinfo->underflow[i] == 0xFFFFFFFF) {
+ duprintf("Invalid underflow %u %u\n",
+ i, repl->underflow[i]);
+- return -EINVAL;
++ goto out_free;
+ }
+ }
+
+- if (!mark_source_chains(newinfo, repl->valid_hooks, entry0))
+- return -ELOOP;
++ if (!mark_source_chains(newinfo, repl->valid_hooks, entry0, offsets)) {
++ ret = -ELOOP;
++ goto out_free;
++ }
++ kvfree(offsets);
+
+ /* Finally, each sanity check must pass */
+ i = 0;
+@@ -890,6 +890,9 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ }
+
+ return ret;
++ out_free:
++ kvfree(offsets);
++ return ret;
+ }
+
+ static void
+diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
+index 4b850c639ac5..703fc9ba6f20 100644
+--- a/net/netfilter/x_tables.c
++++ b/net/netfilter/x_tables.c
+@@ -704,6 +704,56 @@ int xt_check_entry_offsets(const void *base,
+ }
+ EXPORT_SYMBOL(xt_check_entry_offsets);
+
++/**
++ * xt_alloc_entry_offsets - allocate array to store rule head offsets
++ *
++ * @size: number of entries
++ *
++ * Return: NULL or kmalloc'd or vmalloc'd array
++ */
++unsigned int *xt_alloc_entry_offsets(unsigned int size)
++{
++ unsigned int *off;
++
++ off = kcalloc(size, sizeof(unsigned int), GFP_KERNEL | __GFP_NOWARN);
++
++ if (off)
++ return off;
++
++ if (size < (SIZE_MAX / sizeof(unsigned int)))
++ off = vmalloc(size * sizeof(unsigned int));
++
++ return off;
++}
++EXPORT_SYMBOL(xt_alloc_entry_offsets);
++
++/**
++ * xt_find_jump_offset - check if target is a valid jump offset
++ *
++ * @offsets: array containing all valid rule start offsets of a rule blob
++ * @target: the jump target to search for
++ * @size: entries in @offset
++ */
++bool xt_find_jump_offset(const unsigned int *offsets,
++ unsigned int target, unsigned int size)
++{
++ int m, low = 0, hi = size;
++
++ while (hi > low) {
++ m = (low + hi) / 2u;
++
++ if (offsets[m] > target)
++ hi = m;
++ else if (offsets[m] < target)
++ low = m + 1;
++ else
++ return true;
++ }
++
++ return false;
++}
++EXPORT_SYMBOL(xt_find_jump_offset);
++
+ int xt_check_target(struct xt_tgchk_param *par,
+ unsigned int size, u_int8_t proto, bool inv_proto)
+ {
+diff --git a/sound/core/control.c b/sound/core/control.c
+index a85d45595d02..b4fe9b002512 100644
+--- a/sound/core/control.c
++++ b/sound/core/control.c
+@@ -160,6 +160,8 @@ void snd_ctl_notify(struct snd_card *card, unsigned int mask,
+
+ if (snd_BUG_ON(!card || !id))
+ return;
++ if (card->shutdown)
++ return;
+ read_lock(&card->ctl_files_rwlock);
+ #if IS_ENABLED(CONFIG_SND_MIXER_OSS)
+ card->mixer_oss_change_count++;
+diff --git a/sound/core/pcm.c b/sound/core/pcm.c
+index dfed728d8c87..f6e7fdd354de 100644
+--- a/sound/core/pcm.c
++++ b/sound/core/pcm.c
+@@ -849,6 +849,14 @@ int snd_pcm_new_internal(struct snd_card *card, const char *id, int device,
+ }
+ EXPORT_SYMBOL(snd_pcm_new_internal);
+
++static void free_chmap(struct snd_pcm_str *pstr)
++{
++ if (pstr->chmap_kctl) {
++ snd_ctl_remove(pstr->pcm->card, pstr->chmap_kctl);
++ pstr->chmap_kctl = NULL;
++ }
++}
++
+ static void snd_pcm_free_stream(struct snd_pcm_str * pstr)
+ {
+ struct snd_pcm_substream *substream, *substream_next;
+@@ -871,6 +879,7 @@ static void snd_pcm_free_stream(struct snd_pcm_str * pstr)
+ kfree(setup);
+ }
+ #endif
++ free_chmap(pstr);
+ if (pstr->substream_count)
+ put_device(&pstr->dev);
+ }
+@@ -1138,10 +1147,7 @@ static int snd_pcm_dev_disconnect(struct snd_device *device)
+ for (cidx = 0; cidx < 2; cidx++) {
+ if (!pcm->internal)
+ snd_unregister_device(&pcm->streams[cidx].dev);
+- if (pcm->streams[cidx].chmap_kctl) {
+- snd_ctl_remove(pcm->card, pcm->streams[cidx].chmap_kctl);
+- pcm->streams[cidx].chmap_kctl = NULL;
+- }
++ free_chmap(&pcm->streams[cidx]);
+ }
+ mutex_unlock(&pcm->open_mutex);
+ mutex_unlock(®ister_mutex);
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index 9e113bc3b02d..f24a69db0dd8 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -1123,8 +1123,10 @@ static int azx_free(struct azx *chip)
+ if (use_vga_switcheroo(hda)) {
+ if (chip->disabled && chip->bus)
+ snd_hda_unlock_devices(chip->bus);
+- if (hda->vga_switcheroo_registered)
++ if (hda->vga_switcheroo_registered) {
+ vga_switcheroo_unregister_client(chip->pci);
++ vga_switcheroo_fini_domain_pm_ops(chip->card->dev);
++ }
+ }
+
+ if (chip->initialized) {
+@@ -2116,6 +2118,8 @@ static const struct pci_device_id azx_ids[] = {
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0x157a),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
++ { PCI_DEVICE(0x1002, 0x15b3),
++ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0x793b),
+ .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
+ { PCI_DEVICE(0x1002, 0x7919),
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 707bc5405d9f..b3234321aa4b 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5590,7 +5590,6 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ {}
+ };
+ #define ALC225_STANDARD_PINS \
+- {0x12, 0xb7a60130}, \
+ {0x21, 0x04211020}
+
+ #define ALC255_STANDARD_PINS \
+@@ -5650,10 +5649,24 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ SND_HDA_PIN_QUIRK(0x10ec0225, 0x1028, "Dell", ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC225_STANDARD_PINS,
++ {0x12, 0xb7a60130},
+ {0x14, 0x901701a0}),
+ SND_HDA_PIN_QUIRK(0x10ec0225, 0x1028, "Dell", ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC225_STANDARD_PINS,
++ {0x12, 0xb7a60130},
+ {0x14, 0x901701b0}),
++ SND_HDA_PIN_QUIRK(0x10ec0225, 0x1028, "Dell", ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC225_STANDARD_PINS,
++ {0x12, 0xb7a60150},
++ {0x14, 0x901701a0}),
++ SND_HDA_PIN_QUIRK(0x10ec0225, 0x1028, "Dell", ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC225_STANDARD_PINS,
++ {0x12, 0xb7a60150},
++ {0x14, 0x901701b0}),
++ SND_HDA_PIN_QUIRK(0x10ec0225, 0x1028, "Dell", ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC225_STANDARD_PINS,
++ {0x12, 0xb7a60130},
++ {0x1b, 0x90170110}),
+ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL2_MIC_NO_PRESENCE,
+ ALC255_STANDARD_PINS,
+ {0x12, 0x40300000},
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-07-31 16:01 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-07-31 16:01 UTC (permalink / raw
To: gentoo-commits
commit: 1f9b6e4fcf4c1ec883981ad2404d0361ea65643d
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sun Jul 31 16:01:43 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sun Jul 31 16:01:43 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=1f9b6e4f
Linux kernel 4.1.29
0000_README | 4 +
1028_linux-4.1.29.patch | 456 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 460 insertions(+)
diff --git a/0000_README b/0000_README
index 88ef9f3..a9101d3 100644
--- a/0000_README
+++ b/0000_README
@@ -155,6 +155,10 @@ Patch: 1027_linux-4.1.28.patch
From: http://www.kernel.org
Desc: Linux 4.1.28
+Patch: 1028_linux-4.1.29.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.29
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1028_linux-4.1.29.patch b/1028_linux-4.1.29.patch
new file mode 100644
index 0000000..998db23
--- /dev/null
+++ b/1028_linux-4.1.29.patch
@@ -0,0 +1,456 @@
+diff --git a/Makefile b/Makefile
+index 241237cd4ca6..76fa21fa16b8 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 28
++SUBLEVEL = 29
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
+index f33206e27d8d..2b697db33ca6 100644
+--- a/arch/mips/include/asm/pgtable.h
++++ b/arch/mips/include/asm/pgtable.h
+@@ -603,7 +603,8 @@ static inline struct page *pmd_page(pmd_t pmd)
+
+ static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
+ {
+- pmd_val(pmd) = (pmd_val(pmd) & _PAGE_CHG_MASK) | pgprot_val(newprot);
++ pmd_val(pmd) = (pmd_val(pmd) & (_PAGE_CHG_MASK | _PAGE_HUGE)) |
++ (pgprot_val(newprot) & ~_PAGE_CHG_MASK);
+ return pmd;
+ }
+
+diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
+index 28dbbb0d12c4..9b19d96e9562 100644
+--- a/arch/powerpc/kernel/prom.c
++++ b/arch/powerpc/kernel/prom.c
+@@ -166,8 +166,7 @@ static struct ibm_pa_feature {
+ * we don't want to turn on TM here, so we use the *_COMP versions
+ * which are 0 if the kernel doesn't support TM.
+ */
+- {CPU_FTR_TM_COMP, 0, 0,
+- PPC_FEATURE2_HTM_COMP|PPC_FEATURE2_HTM_NOSC_COMP, 22, 0, 0},
++ {CPU_FTR_TM_COMP, 0, 0, PPC_FEATURE2_HTM_COMP, 22, 0, 0},
+ };
+
+ static void __init scan_features(unsigned long node, const unsigned char *ftrs,
+diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
+index 5caed1dd7ccf..80bb8c0349a7 100644
+--- a/arch/x86/kernel/amd_nb.c
++++ b/arch/x86/kernel/amd_nb.c
+@@ -71,8 +71,8 @@ int amd_cache_northbridges(void)
+ while ((misc = next_northbridge(misc, amd_nb_misc_ids)) != NULL)
+ i++;
+
+- if (i == 0)
+- return 0;
++ if (!i)
++ return -ENODEV;
+
+ nb = kzalloc(i * sizeof(struct amd_northbridge), GFP_KERNEL);
+ if (!nb)
+diff --git a/block/ioprio.c b/block/ioprio.c
+index 31666c92b46a..563435684c3c 100644
+--- a/block/ioprio.c
++++ b/block/ioprio.c
+@@ -149,8 +149,10 @@ static int get_task_ioprio(struct task_struct *p)
+ if (ret)
+ goto out;
+ ret = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, IOPRIO_NORM);
++ task_lock(p);
+ if (p->io_context)
+ ret = p->io_context->ioprio;
++ task_unlock(p);
+ out:
+ return ret;
+ }
+diff --git a/drivers/gpio/gpio-sch.c b/drivers/gpio/gpio-sch.c
+index b72906f5b999..2d4766bd61c3 100644
+--- a/drivers/gpio/gpio-sch.c
++++ b/drivers/gpio/gpio-sch.c
+@@ -63,9 +63,8 @@ static unsigned sch_gpio_bit(struct sch_gpio *sch, unsigned gpio)
+ return gpio % 8;
+ }
+
+-static int sch_gpio_reg_get(struct gpio_chip *gc, unsigned gpio, unsigned reg)
++static int sch_gpio_reg_get(struct sch_gpio *sch, unsigned gpio, unsigned reg)
+ {
+- struct sch_gpio *sch = to_sch_gpio(gc);
+ unsigned short offset, bit;
+ u8 reg_val;
+
+@@ -77,10 +76,9 @@ static int sch_gpio_reg_get(struct gpio_chip *gc, unsigned gpio, unsigned reg)
+ return reg_val;
+ }
+
+-static void sch_gpio_reg_set(struct gpio_chip *gc, unsigned gpio, unsigned reg,
++static void sch_gpio_reg_set(struct sch_gpio *sch, unsigned gpio, unsigned reg,
+ int val)
+ {
+- struct sch_gpio *sch = to_sch_gpio(gc);
+ unsigned short offset, bit;
+ u8 reg_val;
+
+@@ -100,14 +98,15 @@ static int sch_gpio_direction_in(struct gpio_chip *gc, unsigned gpio_num)
+ struct sch_gpio *sch = to_sch_gpio(gc);
+
+ spin_lock(&sch->lock);
+- sch_gpio_reg_set(gc, gpio_num, GIO, 1);
++ sch_gpio_reg_set(sch, gpio_num, GIO, 1);
+ spin_unlock(&sch->lock);
+ return 0;
+ }
+
+ static int sch_gpio_get(struct gpio_chip *gc, unsigned gpio_num)
+ {
+- return sch_gpio_reg_get(gc, gpio_num, GLV);
++ struct sch_gpio *sch = to_sch_gpio(gc);
++ return sch_gpio_reg_get(sch, gpio_num, GLV);
+ }
+
+ static void sch_gpio_set(struct gpio_chip *gc, unsigned gpio_num, int val)
+@@ -115,7 +114,7 @@ static void sch_gpio_set(struct gpio_chip *gc, unsigned gpio_num, int val)
+ struct sch_gpio *sch = to_sch_gpio(gc);
+
+ spin_lock(&sch->lock);
+- sch_gpio_reg_set(gc, gpio_num, GLV, val);
++ sch_gpio_reg_set(sch, gpio_num, GLV, val);
+ spin_unlock(&sch->lock);
+ }
+
+@@ -125,7 +124,7 @@ static int sch_gpio_direction_out(struct gpio_chip *gc, unsigned gpio_num,
+ struct sch_gpio *sch = to_sch_gpio(gc);
+
+ spin_lock(&sch->lock);
+- sch_gpio_reg_set(gc, gpio_num, GIO, 0);
++ sch_gpio_reg_set(sch, gpio_num, GIO, 0);
+ spin_unlock(&sch->lock);
+
+ /*
+@@ -184,13 +183,13 @@ static int sch_gpio_probe(struct platform_device *pdev)
+ * GPIO7 is configured by the CMC as SLPIOVR
+ * Enable GPIO[9:8] core powered gpios explicitly
+ */
+- sch_gpio_reg_set(&sch->chip, 8, GEN, 1);
+- sch_gpio_reg_set(&sch->chip, 9, GEN, 1);
++ sch_gpio_reg_set(sch, 8, GEN, 1);
++ sch_gpio_reg_set(sch, 9, GEN, 1);
+ /*
+ * SUS_GPIO[2:0] enabled by default
+ * Enable SUS_GPIO3 resume powered gpio explicitly
+ */
+- sch_gpio_reg_set(&sch->chip, 13, GEN, 1);
++ sch_gpio_reg_set(sch, 13, GEN, 1);
+ break;
+
+ case PCI_DEVICE_ID_INTEL_ITC_LPC:
+diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
+index 0ea0869120cf..187bea44d123 100644
+--- a/drivers/s390/net/qeth_l2_main.c
++++ b/drivers/s390/net/qeth_l2_main.c
+@@ -902,6 +902,7 @@ static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
+ qeth_l2_set_offline(cgdev);
+
+ if (card->dev) {
++ netif_napi_del(&card->napi);
+ unregister_netdev(card->dev);
+ card->dev = NULL;
+ }
+diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
+index 04e42c649134..3f94738feb45 100644
+--- a/drivers/s390/net/qeth_l3_main.c
++++ b/drivers/s390/net/qeth_l3_main.c
+@@ -3362,6 +3362,7 @@ static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
+ qeth_l3_set_offline(cgdev);
+
+ if (card->dev) {
++ netif_napi_del(&card->napi);
+ unregister_netdev(card->dev);
+ card->dev = NULL;
+ }
+diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
+index cccab6188328..cd52c070701b 100644
+--- a/drivers/scsi/ipr.c
++++ b/drivers/scsi/ipr.c
+@@ -9966,6 +9966,7 @@ static int ipr_probe_ioa(struct pci_dev *pdev,
+ ioa_cfg->intr_flag = IPR_USE_MSI;
+ else {
+ ioa_cfg->intr_flag = IPR_USE_LSI;
++ ioa_cfg->clear_isr = 1;
+ ioa_cfg->nvectors = 1;
+ dev_info(&pdev->dev, "Cannot enable MSI.\n");
+ }
+diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c
+index 59fc190f1e92..b96e207bf250 100644
+--- a/drivers/xen/xen-acpi-processor.c
++++ b/drivers/xen/xen-acpi-processor.c
+@@ -423,36 +423,7 @@ upload:
+
+ return 0;
+ }
+-static int __init check_prereq(void)
+-{
+- struct cpuinfo_x86 *c = &cpu_data(0);
+-
+- if (!xen_initial_domain())
+- return -ENODEV;
+-
+- if (!acpi_gbl_FADT.smi_command)
+- return -ENODEV;
+-
+- if (c->x86_vendor == X86_VENDOR_INTEL) {
+- if (!cpu_has(c, X86_FEATURE_EST))
+- return -ENODEV;
+
+- return 0;
+- }
+- if (c->x86_vendor == X86_VENDOR_AMD) {
+- /* Copied from powernow-k8.h, can't include ../cpufreq/powernow
+- * as we get compile warnings for the static functions.
+- */
+-#define CPUID_FREQ_VOLT_CAPABILITIES 0x80000007
+-#define USE_HW_PSTATE 0x00000080
+- u32 eax, ebx, ecx, edx;
+- cpuid(CPUID_FREQ_VOLT_CAPABILITIES, &eax, &ebx, &ecx, &edx);
+- if ((edx & USE_HW_PSTATE) != USE_HW_PSTATE)
+- return -ENODEV;
+- return 0;
+- }
+- return -ENODEV;
+-}
+ /* acpi_perf_data is a pointer to percpu data. */
+ static struct acpi_processor_performance __percpu *acpi_perf_data;
+
+@@ -509,10 +480,10 @@ struct notifier_block xen_acpi_processor_resume_nb = {
+ static int __init xen_acpi_processor_init(void)
+ {
+ unsigned int i;
+- int rc = check_prereq();
++ int rc;
+
+- if (rc)
+- return rc;
++ if (!xen_initial_domain())
++ return -ENODEV;
+
+ nr_acpi_bits = get_max_acpi_id() + 1;
+ acpi_ids_done = kcalloc(BITS_TO_LONGS(nr_acpi_bits), sizeof(unsigned long), GFP_KERNEL);
+diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
+index 9433e46518c8..531e76474983 100644
+--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
++++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
+@@ -316,11 +316,18 @@ static int xenbus_write_transaction(unsigned msg_type,
+ rc = -ENOMEM;
+ goto out;
+ }
++ } else {
++ list_for_each_entry(trans, &u->transactions, list)
++ if (trans->handle.id == u->u.msg.tx_id)
++ break;
++ if (&trans->list == &u->transactions)
++ return -ESRCH;
+ }
+
+ reply = xenbus_dev_request_and_reply(&u->u.msg);
+ if (IS_ERR(reply)) {
+- kfree(trans);
++ if (msg_type == XS_TRANSACTION_START)
++ kfree(trans);
+ rc = PTR_ERR(reply);
+ goto out;
+ }
+@@ -333,12 +340,7 @@ static int xenbus_write_transaction(unsigned msg_type,
+ list_add(&trans->list, &u->transactions);
+ }
+ } else if (u->u.msg.type == XS_TRANSACTION_END) {
+- list_for_each_entry(trans, &u->transactions, list)
+- if (trans->handle.id == u->u.msg.tx_id)
+- break;
+- BUG_ON(&trans->list == &u->transactions);
+ list_del(&trans->list);
+-
+ kfree(trans);
+ }
+
+diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c
+index ba804f3d8278..ce65591b4168 100644
+--- a/drivers/xen/xenbus/xenbus_xs.c
++++ b/drivers/xen/xenbus/xenbus_xs.c
+@@ -250,9 +250,6 @@ void *xenbus_dev_request_and_reply(struct xsd_sockmsg *msg)
+
+ mutex_unlock(&xs_state.request_mutex);
+
+- if (IS_ERR(ret))
+- return ret;
+-
+ if ((msg->type == XS_TRANSACTION_END) ||
+ ((req_msg.type == XS_TRANSACTION_START) &&
+ (msg->type == XS_ERROR)))
+diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
+index 72afcc629d7b..f56a4216d081 100644
+--- a/fs/ecryptfs/file.c
++++ b/fs/ecryptfs/file.c
+@@ -170,6 +170,19 @@ out:
+ return rc;
+ }
+
++static int ecryptfs_mmap(struct file *file, struct vm_area_struct *vma)
++{
++ struct file *lower_file = ecryptfs_file_to_lower(file);
++ /*
++ * Don't allow mmap on top of file systems that don't support it
++ * natively. If FILESYSTEM_MAX_STACK_DEPTH > 2 or ecryptfs
++ * allows recursive mounting, this will need to be extended.
++ */
++ if (!lower_file->f_op->mmap)
++ return -ENODEV;
++ return generic_file_mmap(file, vma);
++}
++
+ /**
+ * ecryptfs_open
+ * @inode: inode speciying file to open
+@@ -365,7 +378,7 @@ const struct file_operations ecryptfs_main_fops = {
+ #ifdef CONFIG_COMPAT
+ .compat_ioctl = ecryptfs_compat_ioctl,
+ #endif
+- .mmap = generic_file_mmap,
++ .mmap = ecryptfs_mmap,
+ .open = ecryptfs_open,
+ .flush = ecryptfs_flush,
+ .release = ecryptfs_release,
+diff --git a/fs/ecryptfs/kthread.c b/fs/ecryptfs/kthread.c
+index e818f5ac7a26..866bb18efefe 100644
+--- a/fs/ecryptfs/kthread.c
++++ b/fs/ecryptfs/kthread.c
+@@ -25,7 +25,6 @@
+ #include <linux/slab.h>
+ #include <linux/wait.h>
+ #include <linux/mount.h>
+-#include <linux/file.h>
+ #include "ecryptfs_kernel.h"
+
+ struct ecryptfs_open_req {
+@@ -148,7 +147,7 @@ int ecryptfs_privileged_open(struct file **lower_file,
+ flags |= IS_RDONLY(d_inode(lower_dentry)) ? O_RDONLY : O_RDWR;
+ (*lower_file) = dentry_open(&req.path, flags, cred);
+ if (!IS_ERR(*lower_file))
+- goto have_file;
++ goto out;
+ if ((flags & O_ACCMODE) == O_RDONLY) {
+ rc = PTR_ERR((*lower_file));
+ goto out;
+@@ -166,16 +165,8 @@ int ecryptfs_privileged_open(struct file **lower_file,
+ mutex_unlock(&ecryptfs_kthread_ctl.mux);
+ wake_up(&ecryptfs_kthread_ctl.wait);
+ wait_for_completion(&req.done);
+- if (IS_ERR(*lower_file)) {
++ if (IS_ERR(*lower_file))
+ rc = PTR_ERR(*lower_file);
+- goto out;
+- }
+-have_file:
+- if ((*lower_file)->f_op->mmap == NULL) {
+- fput(*lower_file);
+- *lower_file = NULL;
+- rc = -EMEDIUMTYPE;
+- }
+ out:
+ return rc;
+ }
+diff --git a/mm/swap.c b/mm/swap.c
+index b523f0a4cbfb..ab3b9c2dd783 100644
+--- a/mm/swap.c
++++ b/mm/swap.c
+@@ -631,7 +631,7 @@ static void __lru_cache_add(struct page *page)
+ struct pagevec *pvec = &get_cpu_var(lru_add_pvec);
+
+ page_cache_get(page);
+- if (!pagevec_space(pvec) || PageCompound(page))
++ if (!pagevec_add(pvec, page) || PageCompound(page))
+ __pagevec_lru_add(pvec);
+ put_cpu_var(lru_add_pvec);
+ }
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index 1782555fcaca..7e3020c1e9d3 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -1961,6 +1961,7 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
+
+ qhead = tu->qhead++;
+ tu->qhead %= tu->queue_size;
++ tu->qused--;
+ spin_unlock_irq(&tu->qlock);
+
+ if (tu->tread) {
+@@ -1974,7 +1975,6 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
+ }
+
+ spin_lock_irq(&tu->qlock);
+- tu->qused--;
+ if (err < 0)
+ goto _error;
+ result += unit;
+diff --git a/sound/pci/au88x0/au88x0_core.c b/sound/pci/au88x0/au88x0_core.c
+index 4667c3232b7f..74177189063c 100644
+--- a/sound/pci/au88x0/au88x0_core.c
++++ b/sound/pci/au88x0/au88x0_core.c
+@@ -1444,9 +1444,8 @@ static int vortex_wtdma_bufshift(vortex_t * vortex, int wtdma)
+ int page, p, pp, delta, i;
+
+ page =
+- (hwread(vortex->mmio, VORTEX_WTDMA_STAT + (wtdma << 2)) &
+- WT_SUBBUF_MASK)
+- >> WT_SUBBUF_SHIFT;
++ (hwread(vortex->mmio, VORTEX_WTDMA_STAT + (wtdma << 2))
++ >> WT_SUBBUF_SHIFT) & WT_SUBBUF_MASK;
+ if (dma->nr_periods >= 4)
+ delta = (page - dma->period_real) & 3;
+ else {
+diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
+index 862db9a0b041..f3e5cfa4f25d 100644
+--- a/sound/pci/echoaudio/echoaudio.c
++++ b/sound/pci/echoaudio/echoaudio.c
+@@ -2200,11 +2200,11 @@ static int snd_echo_resume(struct device *dev)
+ u32 pipe_alloc_mask;
+ int err;
+
+- commpage_bak = kmalloc(sizeof(struct echoaudio), GFP_KERNEL);
++ commpage_bak = kmalloc(sizeof(*commpage), GFP_KERNEL);
+ if (commpage_bak == NULL)
+ return -ENOMEM;
+ commpage = chip->comm_page;
+- memcpy(commpage_bak, commpage, sizeof(struct comm_page));
++ memcpy(commpage_bak, commpage, sizeof(*commpage));
+
+ err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
+ if (err < 0) {
+diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
+index 16e0ebacbdb0..0fda7b4901dd 100644
+--- a/sound/pci/hda/hda_generic.c
++++ b/sound/pci/hda/hda_generic.c
+@@ -3992,6 +3992,8 @@ static hda_nid_t set_path_power(struct hda_codec *codec, hda_nid_t nid,
+
+ for (n = 0; n < spec->paths.used; n++) {
+ path = snd_array_elem(&spec->paths, n);
++ if (!path->depth)
++ continue;
+ if (path->path[0] == nid ||
+ path->path[path->depth - 1] == nid) {
+ bool pin_old = path->pin_enabled;
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index abf8d342f1f4..707bc5405d9f 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5505,6 +5505,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x504a, "ThinkPad X260", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x504b, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
+ SND_PCI_QUIRK(0x17aa, 0x5050, "Thinkpad T560p", ALC292_FIXUP_TPT460),
++ SND_PCI_QUIRK(0x17aa, 0x5051, "Thinkpad L460", ALC292_FIXUP_TPT460),
+ SND_PCI_QUIRK(0x17aa, 0x5053, "Thinkpad T460", ALC292_FIXUP_TPT460),
+ SND_PCI_QUIRK(0x17aa, 0x5109, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-07-15 14:18 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-07-15 14:18 UTC (permalink / raw
To: gentoo-commits
commit: 73336b381c437fb71c4316d2cffcae360c2fe541
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Jul 15 14:19:00 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Jul 15 14:19:00 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=73336b38
Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
0000_README | 4 ++++
1800_fix-lru-cache-add-oom-regression.patch | 17 +++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/0000_README b/0000_README
index 24c0a3c..88ef9f3 100644
--- a/0000_README
+++ b/0000_README
@@ -163,6 +163,10 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
Desc: Enable link security restrictions by default.
+Patch: 1800_fix-lru-cache-add-oom-regression.patch
+From: http://thread.gmane.org/gmane.linux.kernel.stable/184384
+Desc: Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
+
Patch: 2700_ThinkPad-30-brightness-control-fix.patch
From: Seth Forshee <seth.forshee@canonical.com>
Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
diff --git a/1800_fix-lru-cache-add-oom-regression.patch b/1800_fix-lru-cache-add-oom-regression.patch
new file mode 100644
index 0000000..f1ca64b
--- /dev/null
+++ b/1800_fix-lru-cache-add-oom-regression.patch
@@ -0,0 +1,17 @@
+Revert commit 8f182270dfec mm/swap.c: flush lru pvecs on compound page arrival to fix OOM error.
+
+Signed-off-by: Steven Rostedt <rostedt <at> goodmis.org>
+---
+diff --git a/mm/swap.c b/mm/swap.c
+index b523f0a4cbfb..ab3b9c2dd783 100644
+--- a/mm/swap.c
++++ b/mm/swap.c
+ <at> <at> -631,7 +631,7 <at> <at> static void __lru_cache_add(struct page *page)
+ struct pagevec *pvec = &get_cpu_var(lru_add_pvec);
+
+ page_cache_get(page);
+- if (!pagevec_space(pvec) || PageCompound(page))
++ if (!pagevec_add(pvec, page) || PageCompound(page))
+ __pagevec_lru_add(pvec);
+ put_cpu_var(lru_add_pvec);
+ }
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-07-13 23:38 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-07-13 23:38 UTC (permalink / raw
To: gentoo-commits
commit: 051f9f633cfed6438da621f5ba235c50e1073ccf
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Jul 13 23:38:26 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Jul 13 23:38:26 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=051f9f63
Linux patch 4.1.28
0000_README | 4 +
1027_linux-4.1.28.patch | 12868 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 12872 insertions(+)
diff --git a/0000_README b/0000_README
index b592a97..24c0a3c 100644
--- a/0000_README
+++ b/0000_README
@@ -151,6 +151,10 @@ Patch: 1026_linux-4.1.27.patch
From: http://www.kernel.org
Desc: Linux 4.1.27
+Patch: 1027_linux-4.1.28.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.28
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1027_linux-4.1.28.patch b/1027_linux-4.1.28.patch
new file mode 100644
index 0000000..71127b1
--- /dev/null
+++ b/1027_linux-4.1.28.patch
@@ -0,0 +1,12868 @@
+diff --git a/Documentation/scsi/scsi_eh.txt b/Documentation/scsi/scsi_eh.txt
+index 8638f61c8c9d..37eca00796ee 100644
+--- a/Documentation/scsi/scsi_eh.txt
++++ b/Documentation/scsi/scsi_eh.txt
+@@ -263,19 +263,23 @@ scmd->allowed.
+
+ 3. scmd recovered
+ ACTION: scsi_eh_finish_cmd() is invoked to EH-finish scmd
+- - shost->host_failed--
+ - clear scmd->eh_eflags
+ - scsi_setup_cmd_retry()
+ - move from local eh_work_q to local eh_done_q
+ LOCKING: none
++ CONCURRENCY: at most one thread per separate eh_work_q to
++ keep queue manipulation lockless
+
+ 4. EH completes
+ ACTION: scsi_eh_flush_done_q() retries scmds or notifies upper
+- layer of failure.
++ layer of failure. May be called concurrently but must have
++ a no more than one thread per separate eh_work_q to
++ manipulate the queue locklessly
+ - scmd is removed from eh_done_q and scmd->eh_entry is cleared
+ - if retry is necessary, scmd is requeued using
+ scsi_queue_insert()
+ - otherwise, scsi_finish_command() is invoked for scmd
++ - zero shost->host_failed
+ LOCKING: queue or finish function performs appropriate locking
+
+
+diff --git a/Documentation/sysctl/fs.txt b/Documentation/sysctl/fs.txt
+index 88152f214f48..302b5ed616a6 100644
+--- a/Documentation/sysctl/fs.txt
++++ b/Documentation/sysctl/fs.txt
+@@ -32,6 +32,8 @@ Currently, these files are in /proc/sys/fs:
+ - nr_open
+ - overflowuid
+ - overflowgid
++- pipe-user-pages-hard
++- pipe-user-pages-soft
+ - protected_hardlinks
+ - protected_symlinks
+ - suid_dumpable
+@@ -159,6 +161,27 @@ The default is 65534.
+
+ ==============================================================
+
++pipe-user-pages-hard:
++
++Maximum total number of pages a non-privileged user may allocate for pipes.
++Once this limit is reached, no new pipes may be allocated until usage goes
++below the limit again. When set to 0, no limit is applied, which is the default
++setting.
++
++==============================================================
++
++pipe-user-pages-soft:
++
++Maximum total number of pages a non-privileged user may allocate for pipes
++before the pipe size gets limited to a single page. Once this limit is reached,
++new pipes will be limited to a single page in size for this user in order to
++limit total memory usage, and trying to increase them using fcntl() will be
++denied until usage goes below the limit again. The default value allows to
++allocate up to 1024 pipes at their default size. When set to 0, no limit is
++applied.
++
++==============================================================
++
+ protected_hardlinks:
+
+ A long-standing class of security issues is the hardlink-based
+diff --git a/Makefile b/Makefile
+index 54b3d8ae8624..241237cd4ca6 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 27
++SUBLEVEL = 28
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arc/Makefile b/arch/arc/Makefile
+index 2f21e1e0ecf7..305dbdf6c944 100644
+--- a/arch/arc/Makefile
++++ b/arch/arc/Makefile
+@@ -34,7 +34,6 @@ cflags-$(atleast_gcc44) += -fsection-anchors
+ cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
+ cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
+ cflags-$(CONFIG_ARC_HAS_RTSC) += -mrtsc
+-cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables
+
+ # By default gcc 4.8 generates dwarf4 which kernel unwinder can't grok
+ ifeq ($(atleast_gcc48),y)
+diff --git a/arch/arc/kernel/stacktrace.c b/arch/arc/kernel/stacktrace.c
+index 92320d6f737c..5086cc767c0b 100644
+--- a/arch/arc/kernel/stacktrace.c
++++ b/arch/arc/kernel/stacktrace.c
+@@ -144,7 +144,7 @@ arc_unwind_core(struct task_struct *tsk, struct pt_regs *regs,
+ * prelogue is setup (callee regs saved and then fp set and not other
+ * way around
+ */
+- pr_warn("CONFIG_ARC_DW2_UNWIND needs to be enabled\n");
++ pr_warn_once("CONFIG_ARC_DW2_UNWIND needs to be enabled\n");
+ return 0;
+
+ #endif
+diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
+index bfd662e49a25..89b5a0a00dc9 100644
+--- a/arch/arm/include/asm/pgtable-2level.h
++++ b/arch/arm/include/asm/pgtable-2level.h
+@@ -164,6 +164,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
+
+ #define pmd_large(pmd) (pmd_val(pmd) & 2)
+ #define pmd_bad(pmd) (pmd_val(pmd) & 2)
++#define pmd_present(pmd) (pmd_val(pmd))
+
+ #define copy_pmd(pmdpd,pmdps) \
+ do { \
+diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
+index a745a2a53853..fd929b5ded9e 100644
+--- a/arch/arm/include/asm/pgtable-3level.h
++++ b/arch/arm/include/asm/pgtable-3level.h
+@@ -212,6 +212,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
+ : !!(pmd_val(pmd) & (val)))
+ #define pmd_isclear(pmd, val) (!(pmd_val(pmd) & (val)))
+
++#define pmd_present(pmd) (pmd_isset((pmd), L_PMD_SECT_VALID))
+ #define pmd_young(pmd) (pmd_isset((pmd), PMD_SECT_AF))
+ #define pte_special(pte) (pte_isset((pte), L_PTE_SPECIAL))
+ static inline pte_t pte_mkspecial(pte_t pte)
+@@ -257,10 +258,10 @@ PMD_BIT_FUNC(mkyoung, |= PMD_SECT_AF);
+ #define pfn_pmd(pfn,prot) (__pmd(((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)))
+ #define mk_pmd(page,prot) pfn_pmd(page_to_pfn(page),prot)
+
+-/* represent a notpresent pmd by zero, this is used by pmdp_invalidate */
++/* represent a notpresent pmd by faulting entry, this is used by pmdp_invalidate */
+ static inline pmd_t pmd_mknotpresent(pmd_t pmd)
+ {
+- return __pmd(0);
++ return __pmd(pmd_val(pmd) & ~L_PMD_SECT_VALID);
+ }
+
+ static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
+diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
+index f40354198bad..7fa12e0f1bc9 100644
+--- a/arch/arm/include/asm/pgtable.h
++++ b/arch/arm/include/asm/pgtable.h
+@@ -182,7 +182,6 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
+ #define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
+
+ #define pmd_none(pmd) (!pmd_val(pmd))
+-#define pmd_present(pmd) (pmd_val(pmd))
+
+ static inline pte_t *pmd_page_vaddr(pmd_t pmd)
+ {
+diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
+index d6223cbcb661..5414081c0bbf 100644
+--- a/arch/arm/kvm/arm.c
++++ b/arch/arm/kvm/arm.c
+@@ -257,6 +257,7 @@ void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
+ kvm_mmu_free_memory_caches(vcpu);
+ kvm_timer_vcpu_terminate(vcpu);
+ kvm_vgic_vcpu_destroy(vcpu);
++ kvm_vcpu_uninit(vcpu);
+ kmem_cache_free(kvm_vcpu_cache, vcpu);
+ }
+
+diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
+index aa7b379e2661..2a3db0bd9e15 100644
+--- a/arch/arm/mach-omap2/cpuidle34xx.c
++++ b/arch/arm/mach-omap2/cpuidle34xx.c
+@@ -34,6 +34,7 @@
+ #include "pm.h"
+ #include "control.h"
+ #include "common.h"
++#include "soc.h"
+
+ /* Mach specific information to be recorded in the C-state driver_data */
+ struct omap3_idle_statedata {
+@@ -315,6 +316,69 @@ static struct cpuidle_driver omap3_idle_driver = {
+ .safe_state_index = 0,
+ };
+
++/*
++ * Numbers based on measurements made in October 2009 for PM optimized kernel
++ * with CPU freq enabled on device Nokia N900. Assumes OPP2 (main idle OPP,
++ * and worst case latencies).
++ */
++static struct cpuidle_driver omap3430_idle_driver = {
++ .name = "omap3430_idle",
++ .owner = THIS_MODULE,
++ .states = {
++ {
++ .enter = omap3_enter_idle_bm,
++ .exit_latency = 110 + 162,
++ .target_residency = 5,
++ .name = "C1",
++ .desc = "MPU ON + CORE ON",
++ },
++ {
++ .enter = omap3_enter_idle_bm,
++ .exit_latency = 106 + 180,
++ .target_residency = 309,
++ .name = "C2",
++ .desc = "MPU ON + CORE ON",
++ },
++ {
++ .enter = omap3_enter_idle_bm,
++ .exit_latency = 107 + 410,
++ .target_residency = 46057,
++ .name = "C3",
++ .desc = "MPU RET + CORE ON",
++ },
++ {
++ .enter = omap3_enter_idle_bm,
++ .exit_latency = 121 + 3374,
++ .target_residency = 46057,
++ .name = "C4",
++ .desc = "MPU OFF + CORE ON",
++ },
++ {
++ .enter = omap3_enter_idle_bm,
++ .exit_latency = 855 + 1146,
++ .target_residency = 46057,
++ .name = "C5",
++ .desc = "MPU RET + CORE RET",
++ },
++ {
++ .enter = omap3_enter_idle_bm,
++ .exit_latency = 7580 + 4134,
++ .target_residency = 484329,
++ .name = "C6",
++ .desc = "MPU OFF + CORE RET",
++ },
++ {
++ .enter = omap3_enter_idle_bm,
++ .exit_latency = 7505 + 15274,
++ .target_residency = 484329,
++ .name = "C7",
++ .desc = "MPU OFF + CORE OFF",
++ },
++ },
++ .state_count = ARRAY_SIZE(omap3_idle_data),
++ .safe_state_index = 0,
++};
++
+ /* Public functions */
+
+ /**
+@@ -333,5 +397,8 @@ int __init omap3_idle_init(void)
+ if (!mpu_pd || !core_pd || !per_pd || !cam_pd)
+ return -ENODEV;
+
+- return cpuidle_register(&omap3_idle_driver, NULL);
++ if (cpu_is_omap3430())
++ return cpuidle_register(&omap3430_idle_driver, NULL);
++ else
++ return cpuidle_register(&omap3_idle_driver, NULL);
+ }
+diff --git a/arch/arm/mach-s3c64xx/dev-audio.c b/arch/arm/mach-s3c64xx/dev-audio.c
+index ff780a8d8366..9a42736ef4ac 100644
+--- a/arch/arm/mach-s3c64xx/dev-audio.c
++++ b/arch/arm/mach-s3c64xx/dev-audio.c
+@@ -54,12 +54,12 @@ static int s3c64xx_i2s_cfg_gpio(struct platform_device *pdev)
+
+ static struct resource s3c64xx_iis0_resource[] = {
+ [0] = DEFINE_RES_MEM(S3C64XX_PA_IIS0, SZ_256),
+- [1] = DEFINE_RES_DMA(DMACH_I2S0_OUT),
+- [2] = DEFINE_RES_DMA(DMACH_I2S0_IN),
+ };
+
+-static struct s3c_audio_pdata i2sv3_pdata = {
++static struct s3c_audio_pdata i2s0_pdata = {
+ .cfg_gpio = s3c64xx_i2s_cfg_gpio,
++ .dma_playback = DMACH_I2S0_OUT,
++ .dma_capture = DMACH_I2S0_IN,
+ };
+
+ struct platform_device s3c64xx_device_iis0 = {
+@@ -68,15 +68,19 @@ struct platform_device s3c64xx_device_iis0 = {
+ .num_resources = ARRAY_SIZE(s3c64xx_iis0_resource),
+ .resource = s3c64xx_iis0_resource,
+ .dev = {
+- .platform_data = &i2sv3_pdata,
++ .platform_data = &i2s0_pdata,
+ },
+ };
+ EXPORT_SYMBOL(s3c64xx_device_iis0);
+
+ static struct resource s3c64xx_iis1_resource[] = {
+ [0] = DEFINE_RES_MEM(S3C64XX_PA_IIS1, SZ_256),
+- [1] = DEFINE_RES_DMA(DMACH_I2S1_OUT),
+- [2] = DEFINE_RES_DMA(DMACH_I2S1_IN),
++};
++
++static struct s3c_audio_pdata i2s1_pdata = {
++ .cfg_gpio = s3c64xx_i2s_cfg_gpio,
++ .dma_playback = DMACH_I2S1_OUT,
++ .dma_capture = DMACH_I2S1_IN,
+ };
+
+ struct platform_device s3c64xx_device_iis1 = {
+@@ -85,19 +89,19 @@ struct platform_device s3c64xx_device_iis1 = {
+ .num_resources = ARRAY_SIZE(s3c64xx_iis1_resource),
+ .resource = s3c64xx_iis1_resource,
+ .dev = {
+- .platform_data = &i2sv3_pdata,
++ .platform_data = &i2s1_pdata,
+ },
+ };
+ EXPORT_SYMBOL(s3c64xx_device_iis1);
+
+ static struct resource s3c64xx_iisv4_resource[] = {
+ [0] = DEFINE_RES_MEM(S3C64XX_PA_IISV4, SZ_256),
+- [1] = DEFINE_RES_DMA(DMACH_HSI_I2SV40_TX),
+- [2] = DEFINE_RES_DMA(DMACH_HSI_I2SV40_RX),
+ };
+
+ static struct s3c_audio_pdata i2sv4_pdata = {
+ .cfg_gpio = s3c64xx_i2s_cfg_gpio,
++ .dma_playback = DMACH_HSI_I2SV40_TX,
++ .dma_capture = DMACH_HSI_I2SV40_RX,
+ .type = {
+ .i2s = {
+ .quirks = QUIRK_PRI_6CHAN,
+@@ -142,12 +146,12 @@ static int s3c64xx_pcm_cfg_gpio(struct platform_device *pdev)
+
+ static struct resource s3c64xx_pcm0_resource[] = {
+ [0] = DEFINE_RES_MEM(S3C64XX_PA_PCM0, SZ_256),
+- [1] = DEFINE_RES_DMA(DMACH_PCM0_TX),
+- [2] = DEFINE_RES_DMA(DMACH_PCM0_RX),
+ };
+
+ static struct s3c_audio_pdata s3c_pcm0_pdata = {
+ .cfg_gpio = s3c64xx_pcm_cfg_gpio,
++ .dma_capture = DMACH_PCM0_RX,
++ .dma_playback = DMACH_PCM0_TX,
+ };
+
+ struct platform_device s3c64xx_device_pcm0 = {
+@@ -163,12 +167,12 @@ EXPORT_SYMBOL(s3c64xx_device_pcm0);
+
+ static struct resource s3c64xx_pcm1_resource[] = {
+ [0] = DEFINE_RES_MEM(S3C64XX_PA_PCM1, SZ_256),
+- [1] = DEFINE_RES_DMA(DMACH_PCM1_TX),
+- [2] = DEFINE_RES_DMA(DMACH_PCM1_RX),
+ };
+
+ static struct s3c_audio_pdata s3c_pcm1_pdata = {
+ .cfg_gpio = s3c64xx_pcm_cfg_gpio,
++ .dma_playback = DMACH_PCM1_TX,
++ .dma_capture = DMACH_PCM1_RX,
+ };
+
+ struct platform_device s3c64xx_device_pcm1 = {
+@@ -196,13 +200,14 @@ static int s3c64xx_ac97_cfg_gpe(struct platform_device *pdev)
+
+ static struct resource s3c64xx_ac97_resource[] = {
+ [0] = DEFINE_RES_MEM(S3C64XX_PA_AC97, SZ_256),
+- [1] = DEFINE_RES_DMA(DMACH_AC97_PCMOUT),
+- [2] = DEFINE_RES_DMA(DMACH_AC97_PCMIN),
+- [3] = DEFINE_RES_DMA(DMACH_AC97_MICIN),
+- [4] = DEFINE_RES_IRQ(IRQ_AC97),
++ [1] = DEFINE_RES_IRQ(IRQ_AC97),
+ };
+
+-static struct s3c_audio_pdata s3c_ac97_pdata;
++static struct s3c_audio_pdata s3c_ac97_pdata = {
++ .dma_playback = DMACH_AC97_PCMOUT,
++ .dma_capture = DMACH_AC97_PCMIN,
++ .dma_capture_mic = DMACH_AC97_MICIN,
++};
+
+ static u64 s3c64xx_ac97_dmamask = DMA_BIT_MASK(32);
+
+diff --git a/arch/arm/mach-s3c64xx/include/mach/dma.h b/arch/arm/mach-s3c64xx/include/mach/dma.h
+index 096e14073bd9..9c739eafe95c 100644
+--- a/arch/arm/mach-s3c64xx/include/mach/dma.h
++++ b/arch/arm/mach-s3c64xx/include/mach/dma.h
+@@ -14,38 +14,38 @@
+ #define S3C64XX_DMA_CHAN(name) ((unsigned long)(name))
+
+ /* DMA0/SDMA0 */
+-#define DMACH_UART0 S3C64XX_DMA_CHAN("uart0_tx")
+-#define DMACH_UART0_SRC2 S3C64XX_DMA_CHAN("uart0_rx")
+-#define DMACH_UART1 S3C64XX_DMA_CHAN("uart1_tx")
+-#define DMACH_UART1_SRC2 S3C64XX_DMA_CHAN("uart1_rx")
+-#define DMACH_UART2 S3C64XX_DMA_CHAN("uart2_tx")
+-#define DMACH_UART2_SRC2 S3C64XX_DMA_CHAN("uart2_rx")
+-#define DMACH_UART3 S3C64XX_DMA_CHAN("uart3_tx")
+-#define DMACH_UART3_SRC2 S3C64XX_DMA_CHAN("uart3_rx")
+-#define DMACH_PCM0_TX S3C64XX_DMA_CHAN("pcm0_tx")
+-#define DMACH_PCM0_RX S3C64XX_DMA_CHAN("pcm0_rx")
+-#define DMACH_I2S0_OUT S3C64XX_DMA_CHAN("i2s0_tx")
+-#define DMACH_I2S0_IN S3C64XX_DMA_CHAN("i2s0_rx")
++#define DMACH_UART0 "uart0_tx"
++#define DMACH_UART0_SRC2 "uart0_rx"
++#define DMACH_UART1 "uart1_tx"
++#define DMACH_UART1_SRC2 "uart1_rx"
++#define DMACH_UART2 "uart2_tx"
++#define DMACH_UART2_SRC2 "uart2_rx"
++#define DMACH_UART3 "uart3_tx"
++#define DMACH_UART3_SRC2 "uart3_rx"
++#define DMACH_PCM0_TX "pcm0_tx"
++#define DMACH_PCM0_RX "pcm0_rx"
++#define DMACH_I2S0_OUT "i2s0_tx"
++#define DMACH_I2S0_IN "i2s0_rx"
+ #define DMACH_SPI0_TX S3C64XX_DMA_CHAN("spi0_tx")
+ #define DMACH_SPI0_RX S3C64XX_DMA_CHAN("spi0_rx")
+-#define DMACH_HSI_I2SV40_TX S3C64XX_DMA_CHAN("i2s2_tx")
+-#define DMACH_HSI_I2SV40_RX S3C64XX_DMA_CHAN("i2s2_rx")
++#define DMACH_HSI_I2SV40_TX "i2s2_tx"
++#define DMACH_HSI_I2SV40_RX "i2s2_rx"
+
+ /* DMA1/SDMA1 */
+-#define DMACH_PCM1_TX S3C64XX_DMA_CHAN("pcm1_tx")
+-#define DMACH_PCM1_RX S3C64XX_DMA_CHAN("pcm1_rx")
+-#define DMACH_I2S1_OUT S3C64XX_DMA_CHAN("i2s1_tx")
+-#define DMACH_I2S1_IN S3C64XX_DMA_CHAN("i2s1_rx")
++#define DMACH_PCM1_TX "pcm1_tx"
++#define DMACH_PCM1_RX "pcm1_rx"
++#define DMACH_I2S1_OUT "i2s1_tx"
++#define DMACH_I2S1_IN "i2s1_rx"
+ #define DMACH_SPI1_TX S3C64XX_DMA_CHAN("spi1_tx")
+ #define DMACH_SPI1_RX S3C64XX_DMA_CHAN("spi1_rx")
+-#define DMACH_AC97_PCMOUT S3C64XX_DMA_CHAN("ac97_out")
+-#define DMACH_AC97_PCMIN S3C64XX_DMA_CHAN("ac97_in")
+-#define DMACH_AC97_MICIN S3C64XX_DMA_CHAN("ac97_mic")
+-#define DMACH_PWM S3C64XX_DMA_CHAN("pwm")
+-#define DMACH_IRDA S3C64XX_DMA_CHAN("irda")
+-#define DMACH_EXTERNAL S3C64XX_DMA_CHAN("external")
+-#define DMACH_SECURITY_RX S3C64XX_DMA_CHAN("sec_rx")
+-#define DMACH_SECURITY_TX S3C64XX_DMA_CHAN("sec_tx")
++#define DMACH_AC97_PCMOUT "ac97_out"
++#define DMACH_AC97_PCMIN "ac97_in"
++#define DMACH_AC97_MICIN "ac97_mic"
++#define DMACH_PWM "pwm"
++#define DMACH_IRDA "irda"
++#define DMACH_EXTERNAL "external"
++#define DMACH_SECURITY_RX "sec_rx"
++#define DMACH_SECURITY_TX "sec_tx"
+
+ enum dma_ch {
+ DMACH_MAX = 32
+diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c
+index 83c7d154bde0..8b67db8c1213 100644
+--- a/arch/arm/plat-samsung/devs.c
++++ b/arch/arm/plat-samsung/devs.c
+@@ -65,6 +65,7 @@
+ #include <linux/platform_data/usb-ohci-s3c2410.h>
+ #include <plat/usb-phy.h>
+ #include <plat/regs-spi.h>
++#include <linux/platform_data/asoc-s3c.h>
+ #include <linux/platform_data/spi-s3c64xx.h>
+
+ static u64 samsung_device_dma_mask = DMA_BIT_MASK(32);
+@@ -74,9 +75,12 @@ static u64 samsung_device_dma_mask = DMA_BIT_MASK(32);
+ static struct resource s3c_ac97_resource[] = {
+ [0] = DEFINE_RES_MEM(S3C2440_PA_AC97, S3C2440_SZ_AC97),
+ [1] = DEFINE_RES_IRQ(IRQ_S3C244X_AC97),
+- [2] = DEFINE_RES_DMA_NAMED(DMACH_PCM_OUT, "PCM out"),
+- [3] = DEFINE_RES_DMA_NAMED(DMACH_PCM_IN, "PCM in"),
+- [4] = DEFINE_RES_DMA_NAMED(DMACH_MIC_IN, "Mic in"),
++};
++
++static struct s3c_audio_pdata s3c_ac97_pdata = {
++ .dma_playback = (void *)DMACH_PCM_OUT,
++ .dma_capture = (void *)DMACH_PCM_IN,
++ .dma_capture_mic = (void *)DMACH_MIC_IN,
+ };
+
+ struct platform_device s3c_device_ac97 = {
+@@ -87,6 +91,7 @@ struct platform_device s3c_device_ac97 = {
+ .dev = {
+ .dma_mask = &samsung_device_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
++ .platform_data = &s3c_ac97_pdata,
+ }
+ };
+ #endif /* CONFIG_CPU_S3C2440 */
+diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c
+index b6f14e8d2121..bfb8eb168f2d 100644
+--- a/arch/arm64/mm/flush.c
++++ b/arch/arm64/mm/flush.c
+@@ -74,10 +74,6 @@ void __sync_icache_dcache(pte_t pte, unsigned long addr)
+ {
+ struct page *page = pte_page(pte);
+
+- /* no flushing needed for anonymous pages */
+- if (!page_mapping(page))
+- return;
+-
+ if (!test_and_set_bit(PG_dcache_clean, &page->flags)) {
+ __flush_dcache_area(page_address(page),
+ PAGE_SIZE << compound_order(page));
+diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
+index 3585af093576..ab518d14b7b0 100644
+--- a/arch/mips/include/asm/kvm_host.h
++++ b/arch/mips/include/asm/kvm_host.h
+@@ -370,6 +370,7 @@ struct kvm_mips_tlb {
+ #define KVM_MIPS_GUEST_TLB_SIZE 64
+ struct kvm_vcpu_arch {
+ void *host_ebase, *guest_ebase;
++ int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
+ unsigned long host_stack;
+ unsigned long host_gp;
+
+diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
+index 9b3b48e21c22..6ec90a19be70 100644
+--- a/arch/mips/include/asm/processor.h
++++ b/arch/mips/include/asm/processor.h
+@@ -51,7 +51,7 @@ extern unsigned int vced_count, vcei_count;
+ * User space process size: 2GB. This is hardcoded into a few places,
+ * so don't change it unless you know what you are doing.
+ */
+-#define TASK_SIZE 0x7fff8000UL
++#define TASK_SIZE 0x80000000UL
+ #endif
+
+ #define STACK_TOP_MAX TASK_SIZE
+diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
+index be73c491182b..49b52035226c 100644
+--- a/arch/mips/kernel/setup.c
++++ b/arch/mips/kernel/setup.c
+@@ -686,6 +686,9 @@ static void __init arch_mem_init(char **cmdline_p)
+ for_each_memblock(reserved, reg)
+ if (reg->size != 0)
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
++
++ reserve_bootmem_region(__pa_symbol(&__nosave_begin),
++ __pa_symbol(&__nosave_end)); /* Reserve for hibernation */
+ }
+
+ static void __init resource_init(void)
+diff --git a/arch/mips/kvm/interrupt.h b/arch/mips/kvm/interrupt.h
+index 4ab4bdfad703..2143884709e4 100644
+--- a/arch/mips/kvm/interrupt.h
++++ b/arch/mips/kvm/interrupt.h
+@@ -28,6 +28,7 @@
+ #define MIPS_EXC_MAX 12
+ /* XXXSL More to follow */
+
++extern char __kvm_mips_vcpu_run_end[];
+ extern char mips32_exception[], mips32_exceptionEnd[];
+ extern char mips32_GuestException[], mips32_GuestExceptionEnd[];
+
+diff --git a/arch/mips/kvm/locore.S b/arch/mips/kvm/locore.S
+index d1ee95a7f7dd..ae01e7fe4e1c 100644
+--- a/arch/mips/kvm/locore.S
++++ b/arch/mips/kvm/locore.S
+@@ -235,6 +235,7 @@ FEXPORT(__kvm_mips_load_k0k1)
+
+ /* Jump to guest */
+ eret
++EXPORT(__kvm_mips_vcpu_run_end)
+
+ VECTOR(MIPSX(exception), unknown)
+ /* Find out what mode we came from and jump to the proper handler. */
+diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
+index ace4ed7d41c6..485fdc462243 100644
+--- a/arch/mips/kvm/mips.c
++++ b/arch/mips/kvm/mips.c
+@@ -312,6 +312,15 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
+ memcpy(gebase + offset, mips32_GuestException,
+ mips32_GuestExceptionEnd - mips32_GuestException);
+
++#ifdef MODULE
++ offset += mips32_GuestExceptionEnd - mips32_GuestException;
++ memcpy(gebase + offset, (char *)__kvm_mips_vcpu_run,
++ __kvm_mips_vcpu_run_end - (char *)__kvm_mips_vcpu_run);
++ vcpu->arch.vcpu_run = gebase + offset;
++#else
++ vcpu->arch.vcpu_run = __kvm_mips_vcpu_run;
++#endif
++
+ /* Invalidate the icache for these ranges */
+ local_flush_icache_range((unsigned long)gebase,
+ (unsigned long)gebase + ALIGN(size, PAGE_SIZE));
+@@ -401,7 +410,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ /* Disable hardware page table walking while in guest */
+ htw_stop();
+
+- r = __kvm_mips_vcpu_run(run, vcpu);
++ r = vcpu->arch.vcpu_run(run, vcpu);
+
+ /* Re-enable HTW before enabling interrupts */
+ htw_start();
+diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
+index c8c8275765e7..dd023904bac5 100644
+--- a/arch/powerpc/kernel/process.c
++++ b/arch/powerpc/kernel/process.c
+@@ -1240,6 +1240,16 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
+ current->thread.regs = regs - 1;
+ }
+
++#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
++ /*
++ * Clear any transactional state, we're exec()ing. The cause is
++ * not important as there will never be a recheckpoint so it's not
++ * user visible.
++ */
++ if (MSR_TM_SUSPENDED(mfmsr()))
++ tm_reclaim_current(0);
++#endif
++
+ memset(regs->gpr, 0, sizeof(regs->gpr));
+ regs->ctr = 0;
+ regs->link = 0;
+diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
+index abe9cdc390a5..28dbbb0d12c4 100644
+--- a/arch/powerpc/kernel/prom.c
++++ b/arch/powerpc/kernel/prom.c
+@@ -162,11 +162,12 @@ static struct ibm_pa_feature {
+ {0, MMU_FTR_CI_LARGE_PAGE, 0, 0, 1, 2, 0},
+ {CPU_FTR_REAL_LE, 0, PPC_FEATURE_TRUE_LE, 0, 5, 0, 0},
+ /*
+- * If the kernel doesn't support TM (ie. CONFIG_PPC_TRANSACTIONAL_MEM=n),
+- * we don't want to turn on CPU_FTR_TM here, so we use CPU_FTR_TM_COMP
+- * which is 0 if the kernel doesn't support TM.
++ * If the kernel doesn't support TM (ie CONFIG_PPC_TRANSACTIONAL_MEM=n),
++ * we don't want to turn on TM here, so we use the *_COMP versions
++ * which are 0 if the kernel doesn't support TM.
+ */
+- {CPU_FTR_TM_COMP, 0, 0, 0, 22, 0, 0},
++ {CPU_FTR_TM_COMP, 0, 0,
++ PPC_FEATURE2_HTM_COMP|PPC_FEATURE2_HTM_NOSC_COMP, 22, 0, 0},
+ };
+
+ static void __init scan_features(unsigned long node, const unsigned char *ftrs,
+diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
+index 3385e3d0506e..4d29154a4987 100644
+--- a/arch/powerpc/mm/hugetlbpage.c
++++ b/arch/powerpc/mm/hugetlbpage.c
+@@ -472,13 +472,13 @@ static void hugepd_free(struct mmu_gather *tlb, void *hugepte)
+ {
+ struct hugepd_freelist **batchp;
+
+- batchp = this_cpu_ptr(&hugepd_freelist_cur);
++ batchp = &get_cpu_var(hugepd_freelist_cur);
+
+ if (atomic_read(&tlb->mm->mm_users) < 2 ||
+ cpumask_equal(mm_cpumask(tlb->mm),
+ cpumask_of(smp_processor_id()))) {
+ kmem_cache_free(hugepte_cache, hugepte);
+- put_cpu_var(hugepd_freelist_cur);
++ put_cpu_var(hugepd_freelist_cur);
+ return;
+ }
+
+diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h
+index d29ad9545b41..081b2ad99d73 100644
+--- a/arch/s390/include/asm/mmu.h
++++ b/arch/s390/include/asm/mmu.h
+@@ -11,7 +11,7 @@ typedef struct {
+ spinlock_t list_lock;
+ struct list_head pgtable_list;
+ struct list_head gmap_list;
+- unsigned long asce_bits;
++ unsigned long asce;
+ unsigned long asce_limit;
+ unsigned long vdso_base;
+ /* The mmu context allocates 4K page tables. */
+diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
+index e485817f7b1a..22877c9440ea 100644
+--- a/arch/s390/include/asm/mmu_context.h
++++ b/arch/s390/include/asm/mmu_context.h
+@@ -26,12 +26,28 @@ static inline int init_new_context(struct task_struct *tsk,
+ mm->context.has_pgste = 0;
+ mm->context.use_skey = 0;
+ #endif
+- if (mm->context.asce_limit == 0) {
++ switch (mm->context.asce_limit) {
++ case 1UL << 42:
++ /*
++ * forked 3-level task, fall through to set new asce with new
++ * mm->pgd
++ */
++ case 0:
+ /* context created by exec, set asce limit to 4TB */
+- mm->context.asce_bits = _ASCE_TABLE_LENGTH |
+- _ASCE_USER_BITS | _ASCE_TYPE_REGION3;
+ mm->context.asce_limit = STACK_TOP_MAX;
+- } else if (mm->context.asce_limit == (1UL << 31)) {
++ mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
++ _ASCE_USER_BITS | _ASCE_TYPE_REGION3;
++ break;
++ case 1UL << 53:
++ /* forked 4-level task, set new asce with new mm->pgd */
++ mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
++ _ASCE_USER_BITS | _ASCE_TYPE_REGION2;
++ break;
++ case 1UL << 31:
++ /* forked 2-level compat task, set new asce with new mm->pgd */
++ mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
++ _ASCE_USER_BITS | _ASCE_TYPE_SEGMENT;
++ /* pgd_alloc() did not increase mm->nr_pmds */
+ mm_inc_nr_pmds(mm);
+ }
+ crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm));
+@@ -42,7 +58,7 @@ static inline int init_new_context(struct task_struct *tsk,
+
+ static inline void set_user_asce(struct mm_struct *mm)
+ {
+- S390_lowcore.user_asce = mm->context.asce_bits | __pa(mm->pgd);
++ S390_lowcore.user_asce = mm->context.asce;
+ if (current->thread.mm_segment.ar4)
+ __ctl_load(S390_lowcore.user_asce, 7, 7);
+ set_cpu_flag(CIF_ASCE);
+@@ -71,7 +87,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ {
+ int cpu = smp_processor_id();
+
+- S390_lowcore.user_asce = next->context.asce_bits | __pa(next->pgd);
++ S390_lowcore.user_asce = next->context.asce;
+ if (prev == next)
+ return;
+ if (MACHINE_HAS_TLB_LC)
+diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
+index d7cc79fb6191..5991cdcb5b40 100644
+--- a/arch/s390/include/asm/pgalloc.h
++++ b/arch/s390/include/asm/pgalloc.h
+@@ -56,8 +56,8 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm)
+ return _REGION2_ENTRY_EMPTY;
+ }
+
+-int crst_table_upgrade(struct mm_struct *, unsigned long limit);
+-void crst_table_downgrade(struct mm_struct *, unsigned long limit);
++int crst_table_upgrade(struct mm_struct *);
++void crst_table_downgrade(struct mm_struct *);
+
+ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
+ {
+diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
+index dedb6218544b..7ce53f682ec9 100644
+--- a/arch/s390/include/asm/processor.h
++++ b/arch/s390/include/asm/processor.h
+@@ -155,7 +155,7 @@ struct stack_frame {
+ regs->psw.mask = PSW_USER_BITS | PSW_MASK_BA; \
+ regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
+ regs->gprs[15] = new_stackp; \
+- crst_table_downgrade(current->mm, 1UL << 31); \
++ crst_table_downgrade(current->mm); \
+ execve_tail(); \
+ } while (0)
+
+diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h
+index ca148f7c3eaa..a2e6ef32e054 100644
+--- a/arch/s390/include/asm/tlbflush.h
++++ b/arch/s390/include/asm/tlbflush.h
+@@ -110,8 +110,7 @@ static inline void __tlb_flush_asce(struct mm_struct *mm, unsigned long asce)
+ static inline void __tlb_flush_kernel(void)
+ {
+ if (MACHINE_HAS_IDTE)
+- __tlb_flush_idte((unsigned long) init_mm.pgd |
+- init_mm.context.asce_bits);
++ __tlb_flush_idte(init_mm.context.asce);
+ else
+ __tlb_flush_global();
+ }
+@@ -133,8 +132,7 @@ static inline void __tlb_flush_asce(struct mm_struct *mm, unsigned long asce)
+ static inline void __tlb_flush_kernel(void)
+ {
+ if (MACHINE_HAS_TLB_LC)
+- __tlb_flush_idte_local((unsigned long) init_mm.pgd |
+- init_mm.context.asce_bits);
++ __tlb_flush_idte_local(init_mm.context.asce);
+ else
+ __tlb_flush_local();
+ }
+@@ -148,8 +146,7 @@ static inline void __tlb_flush_mm(struct mm_struct * mm)
+ * only ran on the local cpu.
+ */
+ if (MACHINE_HAS_IDTE && list_empty(&mm->context.gmap_list))
+- __tlb_flush_asce(mm, (unsigned long) mm->pgd |
+- mm->context.asce_bits);
++ __tlb_flush_asce(mm, mm->context.asce);
+ else
+ __tlb_flush_full(mm);
+ }
+diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
+index 52fbef91d1d9..7963c6aa1196 100644
+--- a/arch/s390/kernel/ipl.c
++++ b/arch/s390/kernel/ipl.c
+@@ -2044,13 +2044,6 @@ void s390_reset_system(void (*fn_pre)(void),
+ S390_lowcore.program_new_psw.addr =
+ PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
+
+- /*
+- * Clear subchannel ID and number to signal new kernel that no CCW or
+- * SCSI IPL has been done (for kexec and kdump)
+- */
+- S390_lowcore.subchannel_id = 0;
+- S390_lowcore.subchannel_nr = 0;
+-
+ /* Store status at absolute zero */
+ store_status();
+
+diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
+index 80875c43a4a4..728744918a07 100644
+--- a/arch/s390/mm/init.c
++++ b/arch/s390/mm/init.c
+@@ -112,7 +112,8 @@ void __init paging_init(void)
+ asce_bits = _ASCE_TYPE_REGION3 | _ASCE_TABLE_LENGTH;
+ pgd_type = _REGION3_ENTRY_EMPTY;
+ }
+- S390_lowcore.kernel_asce = (__pa(init_mm.pgd) & PAGE_MASK) | asce_bits;
++ init_mm.context.asce = (__pa(init_mm.pgd) & PAGE_MASK) | asce_bits;
++ S390_lowcore.kernel_asce = init_mm.context.asce;
+ clear_table((unsigned long *) init_mm.pgd, pgd_type,
+ sizeof(unsigned long)*2048);
+ vmem_map_init();
+diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
+index 6e552af08c76..e2f8685d9981 100644
+--- a/arch/s390/mm/mmap.c
++++ b/arch/s390/mm/mmap.c
+@@ -184,7 +184,7 @@ int s390_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
+ if (!(flags & MAP_FIXED))
+ addr = 0;
+ if ((addr + len) >= TASK_SIZE)
+- return crst_table_upgrade(current->mm, 1UL << 53);
++ return crst_table_upgrade(current->mm);
+ return 0;
+ }
+
+@@ -201,7 +201,7 @@ s390_get_unmapped_area(struct file *filp, unsigned long addr,
+ return area;
+ if (area == -ENOMEM && !is_compat_task() && TASK_SIZE < (1UL << 53)) {
+ /* Upgrade the page table to 4 levels and retry. */
+- rc = crst_table_upgrade(mm, 1UL << 53);
++ rc = crst_table_upgrade(mm);
+ if (rc)
+ return (unsigned long) rc;
+ area = arch_get_unmapped_area(filp, addr, len, pgoff, flags);
+@@ -223,7 +223,7 @@ s390_get_unmapped_area_topdown(struct file *filp, const unsigned long addr,
+ return area;
+ if (area == -ENOMEM && !is_compat_task() && TASK_SIZE < (1UL << 53)) {
+ /* Upgrade the page table to 4 levels and retry. */
+- rc = crst_table_upgrade(mm, 1UL << 53);
++ rc = crst_table_upgrade(mm);
+ if (rc)
+ return (unsigned long) rc;
+ area = arch_get_unmapped_area_topdown(filp, addr, len,
+diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
+index b33f66110ca9..ebf82a99df45 100644
+--- a/arch/s390/mm/pgtable.c
++++ b/arch/s390/mm/pgtable.c
+@@ -56,81 +56,52 @@ static void __crst_table_upgrade(void *arg)
+ __tlb_flush_local();
+ }
+
+-int crst_table_upgrade(struct mm_struct *mm, unsigned long limit)
++int crst_table_upgrade(struct mm_struct *mm)
+ {
+ unsigned long *table, *pgd;
+- unsigned long entry;
+- int flush;
+
+- BUG_ON(limit > (1UL << 53));
+- flush = 0;
+-repeat:
++ /* upgrade should only happen from 3 to 4 levels */
++ BUG_ON(mm->context.asce_limit != (1UL << 42));
++
+ table = crst_table_alloc(mm);
+ if (!table)
+ return -ENOMEM;
++
+ spin_lock_bh(&mm->page_table_lock);
+- if (mm->context.asce_limit < limit) {
+- pgd = (unsigned long *) mm->pgd;
+- if (mm->context.asce_limit <= (1UL << 31)) {
+- entry = _REGION3_ENTRY_EMPTY;
+- mm->context.asce_limit = 1UL << 42;
+- mm->context.asce_bits = _ASCE_TABLE_LENGTH |
+- _ASCE_USER_BITS |
+- _ASCE_TYPE_REGION3;
+- } else {
+- entry = _REGION2_ENTRY_EMPTY;
+- mm->context.asce_limit = 1UL << 53;
+- mm->context.asce_bits = _ASCE_TABLE_LENGTH |
+- _ASCE_USER_BITS |
+- _ASCE_TYPE_REGION2;
+- }
+- crst_table_init(table, entry);
+- pgd_populate(mm, (pgd_t *) table, (pud_t *) pgd);
+- mm->pgd = (pgd_t *) table;
+- mm->task_size = mm->context.asce_limit;
+- table = NULL;
+- flush = 1;
+- }
++ pgd = (unsigned long *) mm->pgd;
++ crst_table_init(table, _REGION2_ENTRY_EMPTY);
++ pgd_populate(mm, (pgd_t *) table, (pud_t *) pgd);
++ mm->pgd = (pgd_t *) table;
++ mm->context.asce_limit = 1UL << 53;
++ mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
++ _ASCE_USER_BITS | _ASCE_TYPE_REGION2;
++ mm->task_size = mm->context.asce_limit;
+ spin_unlock_bh(&mm->page_table_lock);
+- if (table)
+- crst_table_free(mm, table);
+- if (mm->context.asce_limit < limit)
+- goto repeat;
+- if (flush)
+- on_each_cpu(__crst_table_upgrade, mm, 0);
++
++ on_each_cpu(__crst_table_upgrade, mm, 0);
+ return 0;
+ }
+
+-void crst_table_downgrade(struct mm_struct *mm, unsigned long limit)
++void crst_table_downgrade(struct mm_struct *mm)
+ {
+ pgd_t *pgd;
+
++ /* downgrade should only happen from 3 to 2 levels (compat only) */
++ BUG_ON(mm->context.asce_limit != (1UL << 42));
++
+ if (current->active_mm == mm) {
+ clear_user_asce();
+ __tlb_flush_mm(mm);
+ }
+- while (mm->context.asce_limit > limit) {
+- pgd = mm->pgd;
+- switch (pgd_val(*pgd) & _REGION_ENTRY_TYPE_MASK) {
+- case _REGION_ENTRY_TYPE_R2:
+- mm->context.asce_limit = 1UL << 42;
+- mm->context.asce_bits = _ASCE_TABLE_LENGTH |
+- _ASCE_USER_BITS |
+- _ASCE_TYPE_REGION3;
+- break;
+- case _REGION_ENTRY_TYPE_R3:
+- mm->context.asce_limit = 1UL << 31;
+- mm->context.asce_bits = _ASCE_TABLE_LENGTH |
+- _ASCE_USER_BITS |
+- _ASCE_TYPE_SEGMENT;
+- break;
+- default:
+- BUG();
+- }
+- mm->pgd = (pgd_t *) (pgd_val(*pgd) & _REGION_ENTRY_ORIGIN);
+- mm->task_size = mm->context.asce_limit;
+- crst_table_free(mm, (unsigned long *) pgd);
+- }
++
++ pgd = mm->pgd;
++ mm->pgd = (pgd_t *) (pgd_val(*pgd) & _REGION_ENTRY_ORIGIN);
++ mm->context.asce_limit = 1UL << 31;
++ mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
++ _ASCE_USER_BITS | _ASCE_TYPE_SEGMENT;
++ mm->task_size = mm->context.asce_limit;
++ crst_table_free(mm, (unsigned long *) pgd);
++
+ if (current->active_mm == mm)
+ set_user_asce(mm);
+ }
+diff --git a/arch/sparc/include/asm/head_64.h b/arch/sparc/include/asm/head_64.h
+index 10e9dabc4c41..f0700cfeedd7 100644
+--- a/arch/sparc/include/asm/head_64.h
++++ b/arch/sparc/include/asm/head_64.h
+@@ -15,6 +15,10 @@
+
+ #define PTREGS_OFF (STACK_BIAS + STACKFRAME_SZ)
+
++#define RTRAP_PSTATE (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE)
++#define RTRAP_PSTATE_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV)
++#define RTRAP_PSTATE_AG_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG)
++
+ #define __CHEETAH_ID 0x003e0014
+ #define __JALAPENO_ID 0x003e0016
+ #define __SERRANO_ID 0x003e0022
+diff --git a/arch/sparc/include/asm/ttable.h b/arch/sparc/include/asm/ttable.h
+index 71b5a67522ab..781b9f1dbdc2 100644
+--- a/arch/sparc/include/asm/ttable.h
++++ b/arch/sparc/include/asm/ttable.h
+@@ -589,8 +589,8 @@ user_rtt_fill_64bit: \
+ restored; \
+ nop; nop; nop; nop; nop; nop; \
+ nop; nop; nop; nop; nop; \
+- ba,a,pt %xcc, user_rtt_fill_fixup; \
+- ba,a,pt %xcc, user_rtt_fill_fixup; \
++ ba,a,pt %xcc, user_rtt_fill_fixup_dax; \
++ ba,a,pt %xcc, user_rtt_fill_fixup_mna; \
+ ba,a,pt %xcc, user_rtt_fill_fixup;
+
+
+@@ -652,8 +652,8 @@ user_rtt_fill_32bit: \
+ restored; \
+ nop; nop; nop; nop; nop; \
+ nop; nop; nop; \
+- ba,a,pt %xcc, user_rtt_fill_fixup; \
+- ba,a,pt %xcc, user_rtt_fill_fixup; \
++ ba,a,pt %xcc, user_rtt_fill_fixup_dax; \
++ ba,a,pt %xcc, user_rtt_fill_fixup_mna; \
+ ba,a,pt %xcc, user_rtt_fill_fixup;
+
+
+diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
+index 7cf9c6ea3f1f..fdb13327fded 100644
+--- a/arch/sparc/kernel/Makefile
++++ b/arch/sparc/kernel/Makefile
+@@ -21,6 +21,7 @@ CFLAGS_REMOVE_perf_event.o := -pg
+ CFLAGS_REMOVE_pcr.o := -pg
+ endif
+
++obj-$(CONFIG_SPARC64) += urtt_fill.o
+ obj-$(CONFIG_SPARC32) += entry.o wof.o wuf.o
+ obj-$(CONFIG_SPARC32) += etrap_32.o
+ obj-$(CONFIG_SPARC32) += rtrap_32.o
+diff --git a/arch/sparc/kernel/cherrs.S b/arch/sparc/kernel/cherrs.S
+index 4ee1ad420862..655628def68e 100644
+--- a/arch/sparc/kernel/cherrs.S
++++ b/arch/sparc/kernel/cherrs.S
+@@ -214,8 +214,7 @@ do_dcpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
+ subcc %g1, %g2, %g1 ! Next cacheline
+ bge,pt %icc, 1b
+ nop
+- ba,pt %xcc, dcpe_icpe_tl1_common
+- nop
++ ba,a,pt %xcc, dcpe_icpe_tl1_common
+
+ do_dcpe_tl1_fatal:
+ sethi %hi(1f), %g7
+@@ -224,8 +223,7 @@ do_dcpe_tl1_fatal:
+ mov 0x2, %o0
+ call cheetah_plus_parity_error
+ add %sp, PTREGS_OFF, %o1
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size do_dcpe_tl1,.-do_dcpe_tl1
+
+ .globl do_icpe_tl1
+@@ -259,8 +257,7 @@ do_icpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
+ subcc %g1, %g2, %g1
+ bge,pt %icc, 1b
+ nop
+- ba,pt %xcc, dcpe_icpe_tl1_common
+- nop
++ ba,a,pt %xcc, dcpe_icpe_tl1_common
+
+ do_icpe_tl1_fatal:
+ sethi %hi(1f), %g7
+@@ -269,8 +266,7 @@ do_icpe_tl1_fatal:
+ mov 0x3, %o0
+ call cheetah_plus_parity_error
+ add %sp, PTREGS_OFF, %o1
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size do_icpe_tl1,.-do_icpe_tl1
+
+ .type dcpe_icpe_tl1_common,#function
+@@ -456,7 +452,7 @@ __cheetah_log_error:
+ cmp %g2, 0x63
+ be c_cee
+ nop
+- ba,pt %xcc, c_deferred
++ ba,a,pt %xcc, c_deferred
+ .size __cheetah_log_error,.-__cheetah_log_error
+
+ /* Cheetah FECC trap handling, we get here from tl{0,1}_fecc
+diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
+index 33c02b15f478..a83707c83be8 100644
+--- a/arch/sparc/kernel/entry.S
++++ b/arch/sparc/kernel/entry.S
+@@ -948,7 +948,24 @@ linux_syscall_trace:
+ cmp %o0, 0
+ bne 3f
+ mov -ENOSYS, %o0
++
++ /* Syscall tracing can modify the registers. */
++ ld [%sp + STACKFRAME_SZ + PT_G1], %g1
++ sethi %hi(sys_call_table), %l7
++ ld [%sp + STACKFRAME_SZ + PT_I0], %i0
++ or %l7, %lo(sys_call_table), %l7
++ ld [%sp + STACKFRAME_SZ + PT_I1], %i1
++ ld [%sp + STACKFRAME_SZ + PT_I2], %i2
++ ld [%sp + STACKFRAME_SZ + PT_I3], %i3
++ ld [%sp + STACKFRAME_SZ + PT_I4], %i4
++ ld [%sp + STACKFRAME_SZ + PT_I5], %i5
++ cmp %g1, NR_syscalls
++ bgeu 3f
++ mov -ENOSYS, %o0
++
++ sll %g1, 2, %l4
+ mov %i0, %o0
++ ld [%l7 + %l4], %l7
+ mov %i1, %o1
+ mov %i2, %o2
+ mov %i3, %o3
+diff --git a/arch/sparc/kernel/fpu_traps.S b/arch/sparc/kernel/fpu_traps.S
+index a6864826a4bd..336d2750fe78 100644
+--- a/arch/sparc/kernel/fpu_traps.S
++++ b/arch/sparc/kernel/fpu_traps.S
+@@ -100,8 +100,8 @@ do_fpdis:
+ fmuld %f0, %f2, %f26
+ faddd %f0, %f2, %f28
+ fmuld %f0, %f2, %f30
+- b,pt %xcc, fpdis_exit
+- nop
++ ba,a,pt %xcc, fpdis_exit
++
+ 2: andcc %g5, FPRS_DU, %g0
+ bne,pt %icc, 3f
+ fzero %f32
+@@ -144,8 +144,8 @@ do_fpdis:
+ fmuld %f32, %f34, %f58
+ faddd %f32, %f34, %f60
+ fmuld %f32, %f34, %f62
+- ba,pt %xcc, fpdis_exit
+- nop
++ ba,a,pt %xcc, fpdis_exit
++
+ 3: mov SECONDARY_CONTEXT, %g3
+ add %g6, TI_FPREGS, %g1
+
+@@ -197,8 +197,7 @@ fpdis_exit2:
+ fp_other_bounce:
+ call do_fpother
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size fp_other_bounce,.-fp_other_bounce
+
+ .align 32
+diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S
+index 3d61fcae7ee3..8ff57630a486 100644
+--- a/arch/sparc/kernel/head_64.S
++++ b/arch/sparc/kernel/head_64.S
+@@ -461,9 +461,8 @@ sun4v_chip_type:
+ subcc %g3, 1, %g3
+ bne,pt %xcc, 41b
+ add %g1, 1, %g1
+- mov SUN4V_CHIP_SPARC64X, %g4
+ ba,pt %xcc, 5f
+- nop
++ mov SUN4V_CHIP_SPARC64X, %g4
+
+ 49:
+ mov SUN4V_CHIP_UNKNOWN, %g4
+@@ -548,8 +547,7 @@ sun4u_init:
+ stxa %g0, [%g7] ASI_DMMU
+ membar #Sync
+
+- ba,pt %xcc, sun4u_continue
+- nop
++ ba,a,pt %xcc, sun4u_continue
+
+ sun4v_init:
+ /* Set ctx 0 */
+@@ -560,14 +558,12 @@ sun4v_init:
+ mov SECONDARY_CONTEXT, %g7
+ stxa %g0, [%g7] ASI_MMU
+ membar #Sync
+- ba,pt %xcc, niagara_tlb_fixup
+- nop
++ ba,a,pt %xcc, niagara_tlb_fixup
+
+ sun4u_continue:
+ BRANCH_IF_ANY_CHEETAH(g1, g7, cheetah_tlb_fixup)
+
+- ba,pt %xcc, spitfire_tlb_fixup
+- nop
++ ba,a,pt %xcc, spitfire_tlb_fixup
+
+ niagara_tlb_fixup:
+ mov 3, %g2 /* Set TLB type to hypervisor. */
+@@ -639,8 +635,7 @@ niagara_patch:
+ call hypervisor_patch_cachetlbops
+ nop
+
+- ba,pt %xcc, tlb_fixup_done
+- nop
++ ba,a,pt %xcc, tlb_fixup_done
+
+ cheetah_tlb_fixup:
+ mov 2, %g2 /* Set TLB type to cheetah+. */
+@@ -659,8 +654,7 @@ cheetah_tlb_fixup:
+ call cheetah_patch_cachetlbops
+ nop
+
+- ba,pt %xcc, tlb_fixup_done
+- nop
++ ba,a,pt %xcc, tlb_fixup_done
+
+ spitfire_tlb_fixup:
+ /* Set TLB type to spitfire. */
+@@ -782,8 +776,7 @@ setup_trap_table:
+ call %o1
+ add %sp, (2047 + 128), %o0
+
+- ba,pt %xcc, 2f
+- nop
++ ba,a,pt %xcc, 2f
+
+ 1: sethi %hi(sparc64_ttable_tl0), %o0
+ set prom_set_trap_table_name, %g2
+@@ -822,8 +815,7 @@ setup_trap_table:
+
+ BRANCH_IF_ANY_CHEETAH(o2, o3, 1f)
+
+- ba,pt %xcc, 2f
+- nop
++ ba,a,pt %xcc, 2f
+
+ /* Disable STICK_INT interrupts. */
+ 1:
+diff --git a/arch/sparc/kernel/misctrap.S b/arch/sparc/kernel/misctrap.S
+index 753b4f031bfb..34b4933900bf 100644
+--- a/arch/sparc/kernel/misctrap.S
++++ b/arch/sparc/kernel/misctrap.S
+@@ -18,8 +18,7 @@ __do_privact:
+ 109: or %g7, %lo(109b), %g7
+ call do_privact
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size __do_privact,.-__do_privact
+
+ .type do_mna,#function
+@@ -46,8 +45,7 @@ do_mna:
+ mov %l5, %o2
+ call mem_address_unaligned
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size do_mna,.-do_mna
+
+ .type do_lddfmna,#function
+@@ -65,8 +63,7 @@ do_lddfmna:
+ mov %l5, %o2
+ call handle_lddfmna
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size do_lddfmna,.-do_lddfmna
+
+ .type do_stdfmna,#function
+@@ -84,8 +81,7 @@ do_stdfmna:
+ mov %l5, %o2
+ call handle_stdfmna
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size do_stdfmna,.-do_stdfmna
+
+ .type breakpoint_trap,#function
+diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
+index c928bc64b4ba..991ba90beb04 100644
+--- a/arch/sparc/kernel/pci.c
++++ b/arch/sparc/kernel/pci.c
+@@ -994,6 +994,23 @@ void pcibios_set_master(struct pci_dev *dev)
+ /* No special bus mastering setup handling */
+ }
+
++#ifdef CONFIG_PCI_IOV
++int pcibios_add_device(struct pci_dev *dev)
++{
++ struct pci_dev *pdev;
++
++ /* Add sriov arch specific initialization here.
++ * Copy dev_archdata from PF to VF
++ */
++ if (dev->is_virtfn) {
++ pdev = dev->physfn;
++ memcpy(&dev->dev.archdata, &pdev->dev.archdata,
++ sizeof(struct dev_archdata));
++ }
++ return 0;
++}
++#endif /* CONFIG_PCI_IOV */
++
+ static int __init pcibios_init(void)
+ {
+ pci_dfl_cache_line_size = 64 >> 2;
+diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
+index 39f0c662f4c8..8de386dc8150 100644
+--- a/arch/sparc/kernel/rtrap_64.S
++++ b/arch/sparc/kernel/rtrap_64.S
+@@ -14,10 +14,6 @@
+ #include <asm/visasm.h>
+ #include <asm/processor.h>
+
+-#define RTRAP_PSTATE (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE)
+-#define RTRAP_PSTATE_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV)
+-#define RTRAP_PSTATE_AG_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG)
+-
+ #ifdef CONFIG_CONTEXT_TRACKING
+ # define SCHEDULE_USER schedule_user
+ #else
+@@ -236,52 +232,17 @@ rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
+ wrpr %g1, %cwp
+ ba,a,pt %xcc, user_rtt_fill_64bit
+
+-user_rtt_fill_fixup:
+- rdpr %cwp, %g1
+- add %g1, 1, %g1
+- wrpr %g1, 0x0, %cwp
+-
+- rdpr %wstate, %g2
+- sll %g2, 3, %g2
+- wrpr %g2, 0x0, %wstate
+-
+- /* We know %canrestore and %otherwin are both zero. */
+-
+- sethi %hi(sparc64_kern_pri_context), %g2
+- ldx [%g2 + %lo(sparc64_kern_pri_context)], %g2
+- mov PRIMARY_CONTEXT, %g1
+-
+-661: stxa %g2, [%g1] ASI_DMMU
+- .section .sun4v_1insn_patch, "ax"
+- .word 661b
+- stxa %g2, [%g1] ASI_MMU
+- .previous
+-
+- sethi %hi(KERNBASE), %g1
+- flush %g1
++user_rtt_fill_fixup_dax:
++ ba,pt %xcc, user_rtt_fill_fixup_common
++ mov 1, %g3
+
+- or %g4, FAULT_CODE_WINFIXUP, %g4
+- stb %g4, [%g6 + TI_FAULT_CODE]
+- stx %g5, [%g6 + TI_FAULT_ADDR]
++user_rtt_fill_fixup_mna:
++ ba,pt %xcc, user_rtt_fill_fixup_common
++ mov 2, %g3
+
+- mov %g6, %l1
+- wrpr %g0, 0x0, %tl
+-
+-661: nop
+- .section .sun4v_1insn_patch, "ax"
+- .word 661b
+- SET_GL(0)
+- .previous
+-
+- wrpr %g0, RTRAP_PSTATE, %pstate
+-
+- mov %l1, %g6
+- ldx [%g6 + TI_TASK], %g4
+- LOAD_PER_CPU_BASE(%g5, %g6, %g1, %g2, %g3)
+- call do_sparc64_fault
+- add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++user_rtt_fill_fixup:
++ ba,pt %xcc, user_rtt_fill_fixup_common
++ clr %g3
+
+ user_rtt_pre_restore:
+ add %g1, 1, %g1
+diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c
+index 4eed773a7735..77655f0f0fc7 100644
+--- a/arch/sparc/kernel/signal32.c
++++ b/arch/sparc/kernel/signal32.c
+@@ -138,12 +138,24 @@ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
+ return 0;
+ }
+
++/* Checks if the fp is valid. We always build signal frames which are
++ * 16-byte aligned, therefore we can always enforce that the restore
++ * frame has that property as well.
++ */
++static bool invalid_frame_pointer(void __user *fp, int fplen)
++{
++ if ((((unsigned long) fp) & 15) ||
++ ((unsigned long)fp) > 0x100000000ULL - fplen)
++ return true;
++ return false;
++}
++
+ void do_sigreturn32(struct pt_regs *regs)
+ {
+ struct signal_frame32 __user *sf;
+ compat_uptr_t fpu_save;
+ compat_uptr_t rwin_save;
+- unsigned int psr;
++ unsigned int psr, ufp;
+ unsigned pc, npc;
+ sigset_t set;
+ compat_sigset_t seta;
+@@ -158,11 +170,16 @@ void do_sigreturn32(struct pt_regs *regs)
+ sf = (struct signal_frame32 __user *) regs->u_regs[UREG_FP];
+
+ /* 1. Make sure we are not getting garbage from the user */
+- if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
+- (((unsigned long) sf) & 3))
++ if (invalid_frame_pointer(sf, sizeof(*sf)))
++ goto segv;
++
++ if (get_user(ufp, &sf->info.si_regs.u_regs[UREG_FP]))
++ goto segv;
++
++ if (ufp & 0x7)
+ goto segv;
+
+- if (get_user(pc, &sf->info.si_regs.pc) ||
++ if (__get_user(pc, &sf->info.si_regs.pc) ||
+ __get_user(npc, &sf->info.si_regs.npc))
+ goto segv;
+
+@@ -227,7 +244,7 @@ segv:
+ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
+ {
+ struct rt_signal_frame32 __user *sf;
+- unsigned int psr, pc, npc;
++ unsigned int psr, pc, npc, ufp;
+ compat_uptr_t fpu_save;
+ compat_uptr_t rwin_save;
+ sigset_t set;
+@@ -242,11 +259,16 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
+ sf = (struct rt_signal_frame32 __user *) regs->u_regs[UREG_FP];
+
+ /* 1. Make sure we are not getting garbage from the user */
+- if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
+- (((unsigned long) sf) & 3))
++ if (invalid_frame_pointer(sf, sizeof(*sf)))
+ goto segv;
+
+- if (get_user(pc, &sf->regs.pc) ||
++ if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))
++ goto segv;
++
++ if (ufp & 0x7)
++ goto segv;
++
++ if (__get_user(pc, &sf->regs.pc) ||
+ __get_user(npc, &sf->regs.npc))
+ goto segv;
+
+@@ -307,14 +329,6 @@ segv:
+ force_sig(SIGSEGV, current);
+ }
+
+-/* Checks if the fp is valid */
+-static int invalid_frame_pointer(void __user *fp, int fplen)
+-{
+- if ((((unsigned long) fp) & 7) || ((unsigned long)fp) > 0x100000000ULL - fplen)
+- return 1;
+- return 0;
+-}
+-
+ static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, unsigned long framesize)
+ {
+ unsigned long sp;
+diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
+index 52aa5e4ce5e7..c3c12efe0bc0 100644
+--- a/arch/sparc/kernel/signal_32.c
++++ b/arch/sparc/kernel/signal_32.c
+@@ -60,10 +60,22 @@ struct rt_signal_frame {
+ #define SF_ALIGNEDSZ (((sizeof(struct signal_frame) + 7) & (~7)))
+ #define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame) + 7) & (~7)))
+
++/* Checks if the fp is valid. We always build signal frames which are
++ * 16-byte aligned, therefore we can always enforce that the restore
++ * frame has that property as well.
++ */
++static inline bool invalid_frame_pointer(void __user *fp, int fplen)
++{
++ if ((((unsigned long) fp) & 15) || !__access_ok((unsigned long)fp, fplen))
++ return true;
++
++ return false;
++}
++
+ asmlinkage void do_sigreturn(struct pt_regs *regs)
+ {
++ unsigned long up_psr, pc, npc, ufp;
+ struct signal_frame __user *sf;
+- unsigned long up_psr, pc, npc;
+ sigset_t set;
+ __siginfo_fpu_t __user *fpu_save;
+ __siginfo_rwin_t __user *rwin_save;
+@@ -77,10 +89,13 @@ asmlinkage void do_sigreturn(struct pt_regs *regs)
+ sf = (struct signal_frame __user *) regs->u_regs[UREG_FP];
+
+ /* 1. Make sure we are not getting garbage from the user */
+- if (!access_ok(VERIFY_READ, sf, sizeof(*sf)))
++ if (!invalid_frame_pointer(sf, sizeof(*sf)))
++ goto segv_and_exit;
++
++ if (get_user(ufp, &sf->info.si_regs.u_regs[UREG_FP]))
+ goto segv_and_exit;
+
+- if (((unsigned long) sf) & 3)
++ if (ufp & 0x7)
+ goto segv_and_exit;
+
+ err = __get_user(pc, &sf->info.si_regs.pc);
+@@ -127,7 +142,7 @@ segv_and_exit:
+ asmlinkage void do_rt_sigreturn(struct pt_regs *regs)
+ {
+ struct rt_signal_frame __user *sf;
+- unsigned int psr, pc, npc;
++ unsigned int psr, pc, npc, ufp;
+ __siginfo_fpu_t __user *fpu_save;
+ __siginfo_rwin_t __user *rwin_save;
+ sigset_t set;
+@@ -135,8 +150,13 @@ asmlinkage void do_rt_sigreturn(struct pt_regs *regs)
+
+ synchronize_user_stack();
+ sf = (struct rt_signal_frame __user *) regs->u_regs[UREG_FP];
+- if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
+- (((unsigned long) sf) & 0x03))
++ if (!invalid_frame_pointer(sf, sizeof(*sf)))
++ goto segv;
++
++ if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))
++ goto segv;
++
++ if (ufp & 0x7)
+ goto segv;
+
+ err = __get_user(pc, &sf->regs.pc);
+@@ -178,15 +198,6 @@ segv:
+ force_sig(SIGSEGV, current);
+ }
+
+-/* Checks if the fp is valid */
+-static inline int invalid_frame_pointer(void __user *fp, int fplen)
+-{
+- if ((((unsigned long) fp) & 7) || !__access_ok((unsigned long)fp, fplen))
+- return 1;
+-
+- return 0;
+-}
+-
+ static inline void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, unsigned long framesize)
+ {
+ unsigned long sp = regs->u_regs[UREG_FP];
+diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
+index d88beff47bab..5ee930c48f4c 100644
+--- a/arch/sparc/kernel/signal_64.c
++++ b/arch/sparc/kernel/signal_64.c
+@@ -52,7 +52,7 @@ asmlinkage void sparc64_set_context(struct pt_regs *regs)
+ unsigned char fenab;
+ int err;
+
+- flush_user_windows();
++ synchronize_user_stack();
+ if (get_thread_wsaved() ||
+ (((unsigned long)ucp) & (sizeof(unsigned long)-1)) ||
+ (!__access_ok(ucp, sizeof(*ucp))))
+@@ -234,6 +234,17 @@ do_sigsegv:
+ goto out;
+ }
+
++/* Checks if the fp is valid. We always build rt signal frames which
++ * are 16-byte aligned, therefore we can always enforce that the
++ * restore frame has that property as well.
++ */
++static bool invalid_frame_pointer(void __user *fp)
++{
++ if (((unsigned long) fp) & 15)
++ return true;
++ return false;
++}
++
+ struct rt_signal_frame {
+ struct sparc_stackf ss;
+ siginfo_t info;
+@@ -246,8 +257,8 @@ struct rt_signal_frame {
+
+ void do_rt_sigreturn(struct pt_regs *regs)
+ {
++ unsigned long tpc, tnpc, tstate, ufp;
+ struct rt_signal_frame __user *sf;
+- unsigned long tpc, tnpc, tstate;
+ __siginfo_fpu_t __user *fpu_save;
+ __siginfo_rwin_t __user *rwin_save;
+ sigset_t set;
+@@ -261,10 +272,16 @@ void do_rt_sigreturn(struct pt_regs *regs)
+ (regs->u_regs [UREG_FP] + STACK_BIAS);
+
+ /* 1. Make sure we are not getting garbage from the user */
+- if (((unsigned long) sf) & 3)
++ if (invalid_frame_pointer(sf))
++ goto segv;
++
++ if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))
+ goto segv;
+
+- err = get_user(tpc, &sf->regs.tpc);
++ if ((ufp + STACK_BIAS) & 0x7)
++ goto segv;
++
++ err = __get_user(tpc, &sf->regs.tpc);
+ err |= __get_user(tnpc, &sf->regs.tnpc);
+ if (test_thread_flag(TIF_32BIT)) {
+ tpc &= 0xffffffff;
+@@ -308,14 +325,6 @@ segv:
+ force_sig(SIGSEGV, current);
+ }
+
+-/* Checks if the fp is valid */
+-static int invalid_frame_pointer(void __user *fp)
+-{
+- if (((unsigned long) fp) & 15)
+- return 1;
+- return 0;
+-}
+-
+ static inline void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, unsigned long framesize)
+ {
+ unsigned long sp = regs->u_regs[UREG_FP] + STACK_BIAS;
+diff --git a/arch/sparc/kernel/sigutil_32.c b/arch/sparc/kernel/sigutil_32.c
+index 0f6eebe71e6c..e5fe8cef9a69 100644
+--- a/arch/sparc/kernel/sigutil_32.c
++++ b/arch/sparc/kernel/sigutil_32.c
+@@ -48,6 +48,10 @@ int save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+ int restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+ {
+ int err;
++
++ if (((unsigned long) fpu) & 3)
++ return -EFAULT;
++
+ #ifdef CONFIG_SMP
+ if (test_tsk_thread_flag(current, TIF_USEDFPU))
+ regs->psr &= ~PSR_EF;
+@@ -97,7 +101,10 @@ int restore_rwin_state(__siginfo_rwin_t __user *rp)
+ struct thread_info *t = current_thread_info();
+ int i, wsaved, err;
+
+- __get_user(wsaved, &rp->wsaved);
++ if (((unsigned long) rp) & 3)
++ return -EFAULT;
++
++ get_user(wsaved, &rp->wsaved);
+ if (wsaved > NSWINS)
+ return -EFAULT;
+
+diff --git a/arch/sparc/kernel/sigutil_64.c b/arch/sparc/kernel/sigutil_64.c
+index 387834a9c56a..36aadcbeac69 100644
+--- a/arch/sparc/kernel/sigutil_64.c
++++ b/arch/sparc/kernel/sigutil_64.c
+@@ -37,7 +37,10 @@ int restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+ unsigned long fprs;
+ int err;
+
+- err = __get_user(fprs, &fpu->si_fprs);
++ if (((unsigned long) fpu) & 7)
++ return -EFAULT;
++
++ err = get_user(fprs, &fpu->si_fprs);
+ fprs_write(0);
+ regs->tstate &= ~TSTATE_PEF;
+ if (fprs & FPRS_DL)
+@@ -72,7 +75,10 @@ int restore_rwin_state(__siginfo_rwin_t __user *rp)
+ struct thread_info *t = current_thread_info();
+ int i, wsaved, err;
+
+- __get_user(wsaved, &rp->wsaved);
++ if (((unsigned long) rp) & 7)
++ return -EFAULT;
++
++ get_user(wsaved, &rp->wsaved);
+ if (wsaved > NSWINS)
+ return -EFAULT;
+
+diff --git a/arch/sparc/kernel/spiterrs.S b/arch/sparc/kernel/spiterrs.S
+index c357e40ffd01..4a73009f66a5 100644
+--- a/arch/sparc/kernel/spiterrs.S
++++ b/arch/sparc/kernel/spiterrs.S
+@@ -85,8 +85,7 @@ __spitfire_cee_trap_continue:
+ ba,pt %xcc, etraptl1
+ rd %pc, %g7
+
+- ba,pt %xcc, 2f
+- nop
++ ba,a,pt %xcc, 2f
+
+ 1: ba,pt %xcc, etrap_irq
+ rd %pc, %g7
+@@ -100,8 +99,7 @@ __spitfire_cee_trap_continue:
+ mov %l5, %o2
+ call spitfire_access_error
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size __spitfire_access_error,.-__spitfire_access_error
+
+ /* This is the trap handler entry point for ECC correctable
+@@ -179,8 +177,7 @@ __spitfire_data_access_exception_tl1:
+ mov %l5, %o2
+ call spitfire_data_access_exception_tl1
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size __spitfire_data_access_exception_tl1,.-__spitfire_data_access_exception_tl1
+
+ .type __spitfire_data_access_exception,#function
+@@ -200,8 +197,7 @@ __spitfire_data_access_exception:
+ mov %l5, %o2
+ call spitfire_data_access_exception
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size __spitfire_data_access_exception,.-__spitfire_data_access_exception
+
+ .type __spitfire_insn_access_exception_tl1,#function
+@@ -220,8 +216,7 @@ __spitfire_insn_access_exception_tl1:
+ mov %l5, %o2
+ call spitfire_insn_access_exception_tl1
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size __spitfire_insn_access_exception_tl1,.-__spitfire_insn_access_exception_tl1
+
+ .type __spitfire_insn_access_exception,#function
+@@ -240,6 +235,5 @@ __spitfire_insn_access_exception:
+ mov %l5, %o2
+ call spitfire_insn_access_exception
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+ .size __spitfire_insn_access_exception,.-__spitfire_insn_access_exception
+diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
+index bb0008927598..c4a1b5c40e4e 100644
+--- a/arch/sparc/kernel/syscalls.S
++++ b/arch/sparc/kernel/syscalls.S
+@@ -158,7 +158,25 @@ linux_syscall_trace32:
+ add %sp, PTREGS_OFF, %o0
+ brnz,pn %o0, 3f
+ mov -ENOSYS, %o0
++
++ /* Syscall tracing can modify the registers. */
++ ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
++ sethi %hi(sys_call_table32), %l7
++ ldx [%sp + PTREGS_OFF + PT_V9_I0], %i0
++ or %l7, %lo(sys_call_table32), %l7
++ ldx [%sp + PTREGS_OFF + PT_V9_I1], %i1
++ ldx [%sp + PTREGS_OFF + PT_V9_I2], %i2
++ ldx [%sp + PTREGS_OFF + PT_V9_I3], %i3
++ ldx [%sp + PTREGS_OFF + PT_V9_I4], %i4
++ ldx [%sp + PTREGS_OFF + PT_V9_I5], %i5
++
++ cmp %g1, NR_syscalls
++ bgeu,pn %xcc, 3f
++ mov -ENOSYS, %o0
++
++ sll %g1, 2, %l4
+ srl %i0, 0, %o0
++ lduw [%l7 + %l4], %l7
+ srl %i4, 0, %o4
+ srl %i1, 0, %o1
+ srl %i2, 0, %o2
+@@ -170,7 +188,25 @@ linux_syscall_trace:
+ add %sp, PTREGS_OFF, %o0
+ brnz,pn %o0, 3f
+ mov -ENOSYS, %o0
++
++ /* Syscall tracing can modify the registers. */
++ ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
++ sethi %hi(sys_call_table64), %l7
++ ldx [%sp + PTREGS_OFF + PT_V9_I0], %i0
++ or %l7, %lo(sys_call_table64), %l7
++ ldx [%sp + PTREGS_OFF + PT_V9_I1], %i1
++ ldx [%sp + PTREGS_OFF + PT_V9_I2], %i2
++ ldx [%sp + PTREGS_OFF + PT_V9_I3], %i3
++ ldx [%sp + PTREGS_OFF + PT_V9_I4], %i4
++ ldx [%sp + PTREGS_OFF + PT_V9_I5], %i5
++
++ cmp %g1, NR_syscalls
++ bgeu,pn %xcc, 3f
++ mov -ENOSYS, %o0
++
++ sll %g1, 2, %l4
+ mov %i0, %o0
++ lduw [%l7 + %l4], %l7
+ mov %i1, %o1
+ mov %i2, %o2
+ mov %i3, %o3
+diff --git a/arch/sparc/kernel/urtt_fill.S b/arch/sparc/kernel/urtt_fill.S
+new file mode 100644
+index 000000000000..5604a2b051d4
+--- /dev/null
++++ b/arch/sparc/kernel/urtt_fill.S
+@@ -0,0 +1,98 @@
++#include <asm/thread_info.h>
++#include <asm/trap_block.h>
++#include <asm/spitfire.h>
++#include <asm/ptrace.h>
++#include <asm/head.h>
++
++ .text
++ .align 8
++ .globl user_rtt_fill_fixup_common
++user_rtt_fill_fixup_common:
++ rdpr %cwp, %g1
++ add %g1, 1, %g1
++ wrpr %g1, 0x0, %cwp
++
++ rdpr %wstate, %g2
++ sll %g2, 3, %g2
++ wrpr %g2, 0x0, %wstate
++
++ /* We know %canrestore and %otherwin are both zero. */
++
++ sethi %hi(sparc64_kern_pri_context), %g2
++ ldx [%g2 + %lo(sparc64_kern_pri_context)], %g2
++ mov PRIMARY_CONTEXT, %g1
++
++661: stxa %g2, [%g1] ASI_DMMU
++ .section .sun4v_1insn_patch, "ax"
++ .word 661b
++ stxa %g2, [%g1] ASI_MMU
++ .previous
++
++ sethi %hi(KERNBASE), %g1
++ flush %g1
++
++ mov %g4, %l4
++ mov %g5, %l5
++ brnz,pn %g3, 1f
++ mov %g3, %l3
++
++ or %g4, FAULT_CODE_WINFIXUP, %g4
++ stb %g4, [%g6 + TI_FAULT_CODE]
++ stx %g5, [%g6 + TI_FAULT_ADDR]
++1:
++ mov %g6, %l1
++ wrpr %g0, 0x0, %tl
++
++661: nop
++ .section .sun4v_1insn_patch, "ax"
++ .word 661b
++ SET_GL(0)
++ .previous
++
++ wrpr %g0, RTRAP_PSTATE, %pstate
++
++ mov %l1, %g6
++ ldx [%g6 + TI_TASK], %g4
++ LOAD_PER_CPU_BASE(%g5, %g6, %g1, %g2, %g3)
++
++ brnz,pn %l3, 1f
++ nop
++
++ call do_sparc64_fault
++ add %sp, PTREGS_OFF, %o0
++ ba,pt %xcc, rtrap
++ nop
++
++1: cmp %g3, 2
++ bne,pn %xcc, 2f
++ nop
++
++ sethi %hi(tlb_type), %g1
++ lduw [%g1 + %lo(tlb_type)], %g1
++ cmp %g1, 3
++ bne,pt %icc, 1f
++ add %sp, PTREGS_OFF, %o0
++ mov %l4, %o2
++ call sun4v_do_mna
++ mov %l5, %o1
++ ba,a,pt %xcc, rtrap
++1: mov %l4, %o1
++ mov %l5, %o2
++ call mem_address_unaligned
++ nop
++ ba,a,pt %xcc, rtrap
++
++2: sethi %hi(tlb_type), %g1
++ mov %l4, %o1
++ lduw [%g1 + %lo(tlb_type)], %g1
++ mov %l5, %o2
++ cmp %g1, 3
++ bne,pt %icc, 1f
++ add %sp, PTREGS_OFF, %o0
++ call sun4v_data_access_exception
++ nop
++ ba,a,pt %xcc, rtrap
++
++1: call spitfire_data_access_exception
++ nop
++ ba,a,pt %xcc, rtrap
+diff --git a/arch/sparc/kernel/utrap.S b/arch/sparc/kernel/utrap.S
+index b7f0f3f3a909..c731e8023d3e 100644
+--- a/arch/sparc/kernel/utrap.S
++++ b/arch/sparc/kernel/utrap.S
+@@ -11,8 +11,7 @@ utrap_trap: /* %g3=handler,%g4=level */
+ mov %l4, %o1
+ call bad_trap
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+
+ invoke_utrap:
+ sllx %g3, 3, %g3
+diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
+index f1a2f688b28a..4a41d412dd3d 100644
+--- a/arch/sparc/kernel/vmlinux.lds.S
++++ b/arch/sparc/kernel/vmlinux.lds.S
+@@ -33,6 +33,10 @@ ENTRY(_start)
+ jiffies = jiffies_64;
+ #endif
+
++#ifdef CONFIG_SPARC64
++ASSERT((swapper_tsb == 0x0000000000408000), "Error: sparc64 early assembler too large")
++#endif
++
+ SECTIONS
+ {
+ #ifdef CONFIG_SPARC64
+diff --git a/arch/sparc/kernel/winfixup.S b/arch/sparc/kernel/winfixup.S
+index 1e67ce958369..855019a8590e 100644
+--- a/arch/sparc/kernel/winfixup.S
++++ b/arch/sparc/kernel/winfixup.S
+@@ -32,8 +32,7 @@ fill_fixup:
+ rd %pc, %g7
+ call do_sparc64_fault
+ add %sp, PTREGS_OFF, %o0
+- ba,pt %xcc, rtrap
+- nop
++ ba,a,pt %xcc, rtrap
+
+ /* Be very careful about usage of the trap globals here.
+ * You cannot touch %g5 as that has the fault information.
+diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
+index 559cb744112c..71c7ace855d7 100644
+--- a/arch/sparc/mm/init_64.c
++++ b/arch/sparc/mm/init_64.c
+@@ -1301,10 +1301,18 @@ static int __init numa_parse_sun4u(void)
+
+ static int __init bootmem_init_numa(void)
+ {
++ int i, j;
+ int err = -1;
+
+ numadbg("bootmem_init_numa()\n");
+
++ /* Some sane defaults for numa latency values */
++ for (i = 0; i < MAX_NUMNODES; i++) {
++ for (j = 0; j < MAX_NUMNODES; j++)
++ numa_latency[i][j] = (i == j) ?
++ LOCAL_DISTANCE : REMOTE_DISTANCE;
++ }
++
+ if (numa_enabled) {
+ if (tlb_type == hypervisor)
+ err = numa_parse_mdesc();
+@@ -2762,9 +2770,10 @@ void hugetlb_setup(struct pt_regs *regs)
+ * the Data-TLB for huge pages.
+ */
+ if (tlb_type == cheetah_plus) {
++ bool need_context_reload = false;
+ unsigned long ctx;
+
+- spin_lock(&ctx_alloc_lock);
++ spin_lock_irq(&ctx_alloc_lock);
+ ctx = mm->context.sparc64_ctx_val;
+ ctx &= ~CTX_PGSZ_MASK;
+ ctx |= CTX_PGSZ_BASE << CTX_PGSZ0_SHIFT;
+@@ -2783,9 +2792,12 @@ void hugetlb_setup(struct pt_regs *regs)
+ * also executing in this address space.
+ */
+ mm->context.sparc64_ctx_val = ctx;
+- on_each_cpu(context_reload, mm, 0);
++ need_context_reload = true;
+ }
+- spin_unlock(&ctx_alloc_lock);
++ spin_unlock_irq(&ctx_alloc_lock);
++
++ if (need_context_reload)
++ on_each_cpu(context_reload, mm, 0);
+ }
+ }
+ #endif
+diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
+index 1af51b1586d7..56270f0f05e6 100644
+--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
++++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
+@@ -385,6 +385,9 @@ static void intel_thermal_interrupt(void)
+ {
+ __u64 msr_val;
+
++ if (static_cpu_has(X86_FEATURE_HWP))
++ wrmsrl_safe(MSR_HWP_STATUS, 0);
++
+ rdmsrl(MSR_IA32_THERM_STATUS, msr_val);
+
+ /* Check for violation of core thermal thresholds*/
+diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
+index 1deffe6cc873..023c442c33bb 100644
+--- a/arch/x86/kernel/kprobes/core.c
++++ b/arch/x86/kernel/kprobes/core.c
+@@ -959,7 +959,19 @@ int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+ * normal page fault.
+ */
+ regs->ip = (unsigned long)cur->addr;
++ /*
++ * Trap flag (TF) has been set here because this fault
++ * happened where the single stepping will be done.
++ * So clear it by resetting the current kprobe:
++ */
++ regs->flags &= ~X86_EFLAGS_TF;
++
++ /*
++ * If the TF flag was set before the kprobe hit,
++ * don't touch it:
++ */
+ regs->flags |= kcb->kprobe_old_flags;
++
+ if (kcb->kprobe_status == KPROBE_REENTER)
+ restore_previous_kprobe(kcb);
+ else
+diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
+index 1d08ad3582d0..090aa5c1d6b1 100644
+--- a/arch/x86/kvm/cpuid.c
++++ b/arch/x86/kvm/cpuid.c
+@@ -501,6 +501,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
+ do_cpuid_1_ent(&entry[i], function, idx);
+ if (idx == 1) {
+ entry[i].eax &= kvm_supported_word10_x86_features;
++ cpuid_mask(&entry[i].eax, 10);
+ entry[i].ebx = 0;
+ if (entry[i].eax & (F(XSAVES)|F(XSAVEC)))
+ entry[i].ebx =
+diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c
+index 637ab34ed632..ddb2244b06a1 100644
+--- a/arch/x86/mm/kmmio.c
++++ b/arch/x86/mm/kmmio.c
+@@ -33,7 +33,7 @@
+ struct kmmio_fault_page {
+ struct list_head list;
+ struct kmmio_fault_page *release_next;
+- unsigned long page; /* location of the fault page */
++ unsigned long addr; /* the requested address */
+ pteval_t old_presence; /* page presence prior to arming */
+ bool armed;
+
+@@ -70,9 +70,16 @@ unsigned int kmmio_count;
+ static struct list_head kmmio_page_table[KMMIO_PAGE_TABLE_SIZE];
+ static LIST_HEAD(kmmio_probes);
+
+-static struct list_head *kmmio_page_list(unsigned long page)
++static struct list_head *kmmio_page_list(unsigned long addr)
+ {
+- return &kmmio_page_table[hash_long(page, KMMIO_PAGE_HASH_BITS)];
++ unsigned int l;
++ pte_t *pte = lookup_address(addr, &l);
++
++ if (!pte)
++ return NULL;
++ addr &= page_level_mask(l);
++
++ return &kmmio_page_table[hash_long(addr, KMMIO_PAGE_HASH_BITS)];
+ }
+
+ /* Accessed per-cpu */
+@@ -98,15 +105,19 @@ static struct kmmio_probe *get_kmmio_probe(unsigned long addr)
+ }
+
+ /* You must be holding RCU read lock. */
+-static struct kmmio_fault_page *get_kmmio_fault_page(unsigned long page)
++static struct kmmio_fault_page *get_kmmio_fault_page(unsigned long addr)
+ {
+ struct list_head *head;
+ struct kmmio_fault_page *f;
++ unsigned int l;
++ pte_t *pte = lookup_address(addr, &l);
+
+- page &= PAGE_MASK;
+- head = kmmio_page_list(page);
++ if (!pte)
++ return NULL;
++ addr &= page_level_mask(l);
++ head = kmmio_page_list(addr);
+ list_for_each_entry_rcu(f, head, list) {
+- if (f->page == page)
++ if (f->addr == addr)
+ return f;
+ }
+ return NULL;
+@@ -137,10 +148,10 @@ static void clear_pte_presence(pte_t *pte, bool clear, pteval_t *old)
+ static int clear_page_presence(struct kmmio_fault_page *f, bool clear)
+ {
+ unsigned int level;
+- pte_t *pte = lookup_address(f->page, &level);
++ pte_t *pte = lookup_address(f->addr, &level);
+
+ if (!pte) {
+- pr_err("no pte for page 0x%08lx\n", f->page);
++ pr_err("no pte for addr 0x%08lx\n", f->addr);
+ return -1;
+ }
+
+@@ -156,7 +167,7 @@ static int clear_page_presence(struct kmmio_fault_page *f, bool clear)
+ return -1;
+ }
+
+- __flush_tlb_one(f->page);
++ __flush_tlb_one(f->addr);
+ return 0;
+ }
+
+@@ -176,12 +187,12 @@ static int arm_kmmio_fault_page(struct kmmio_fault_page *f)
+ int ret;
+ WARN_ONCE(f->armed, KERN_ERR pr_fmt("kmmio page already armed.\n"));
+ if (f->armed) {
+- pr_warning("double-arm: page 0x%08lx, ref %d, old %d\n",
+- f->page, f->count, !!f->old_presence);
++ pr_warning("double-arm: addr 0x%08lx, ref %d, old %d\n",
++ f->addr, f->count, !!f->old_presence);
+ }
+ ret = clear_page_presence(f, true);
+- WARN_ONCE(ret < 0, KERN_ERR pr_fmt("arming 0x%08lx failed.\n"),
+- f->page);
++ WARN_ONCE(ret < 0, KERN_ERR pr_fmt("arming at 0x%08lx failed.\n"),
++ f->addr);
+ f->armed = true;
+ return ret;
+ }
+@@ -191,7 +202,7 @@ static void disarm_kmmio_fault_page(struct kmmio_fault_page *f)
+ {
+ int ret = clear_page_presence(f, false);
+ WARN_ONCE(ret < 0,
+- KERN_ERR "kmmio disarming 0x%08lx failed.\n", f->page);
++ KERN_ERR "kmmio disarming at 0x%08lx failed.\n", f->addr);
+ f->armed = false;
+ }
+
+@@ -215,6 +226,12 @@ int kmmio_handler(struct pt_regs *regs, unsigned long addr)
+ struct kmmio_context *ctx;
+ struct kmmio_fault_page *faultpage;
+ int ret = 0; /* default to fault not handled */
++ unsigned long page_base = addr;
++ unsigned int l;
++ pte_t *pte = lookup_address(addr, &l);
++ if (!pte)
++ return -EINVAL;
++ page_base &= page_level_mask(l);
+
+ /*
+ * Preemption is now disabled to prevent process switch during
+@@ -227,7 +244,7 @@ int kmmio_handler(struct pt_regs *regs, unsigned long addr)
+ preempt_disable();
+ rcu_read_lock();
+
+- faultpage = get_kmmio_fault_page(addr);
++ faultpage = get_kmmio_fault_page(page_base);
+ if (!faultpage) {
+ /*
+ * Either this page fault is not caused by kmmio, or
+@@ -239,7 +256,7 @@ int kmmio_handler(struct pt_regs *regs, unsigned long addr)
+
+ ctx = &get_cpu_var(kmmio_ctx);
+ if (ctx->active) {
+- if (addr == ctx->addr) {
++ if (page_base == ctx->addr) {
+ /*
+ * A second fault on the same page means some other
+ * condition needs handling by do_page_fault(), the
+@@ -267,9 +284,9 @@ int kmmio_handler(struct pt_regs *regs, unsigned long addr)
+ ctx->active++;
+
+ ctx->fpage = faultpage;
+- ctx->probe = get_kmmio_probe(addr);
++ ctx->probe = get_kmmio_probe(page_base);
+ ctx->saved_flags = (regs->flags & (X86_EFLAGS_TF | X86_EFLAGS_IF));
+- ctx->addr = addr;
++ ctx->addr = page_base;
+
+ if (ctx->probe && ctx->probe->pre_handler)
+ ctx->probe->pre_handler(ctx->probe, regs, addr);
+@@ -354,12 +371,11 @@ out:
+ }
+
+ /* You must be holding kmmio_lock. */
+-static int add_kmmio_fault_page(unsigned long page)
++static int add_kmmio_fault_page(unsigned long addr)
+ {
+ struct kmmio_fault_page *f;
+
+- page &= PAGE_MASK;
+- f = get_kmmio_fault_page(page);
++ f = get_kmmio_fault_page(addr);
+ if (f) {
+ if (!f->count)
+ arm_kmmio_fault_page(f);
+@@ -372,26 +388,25 @@ static int add_kmmio_fault_page(unsigned long page)
+ return -1;
+
+ f->count = 1;
+- f->page = page;
++ f->addr = addr;
+
+ if (arm_kmmio_fault_page(f)) {
+ kfree(f);
+ return -1;
+ }
+
+- list_add_rcu(&f->list, kmmio_page_list(f->page));
++ list_add_rcu(&f->list, kmmio_page_list(f->addr));
+
+ return 0;
+ }
+
+ /* You must be holding kmmio_lock. */
+-static void release_kmmio_fault_page(unsigned long page,
++static void release_kmmio_fault_page(unsigned long addr,
+ struct kmmio_fault_page **release_list)
+ {
+ struct kmmio_fault_page *f;
+
+- page &= PAGE_MASK;
+- f = get_kmmio_fault_page(page);
++ f = get_kmmio_fault_page(addr);
+ if (!f)
+ return;
+
+@@ -420,18 +435,27 @@ int register_kmmio_probe(struct kmmio_probe *p)
+ int ret = 0;
+ unsigned long size = 0;
+ const unsigned long size_lim = p->len + (p->addr & ~PAGE_MASK);
++ unsigned int l;
++ pte_t *pte;
+
+ spin_lock_irqsave(&kmmio_lock, flags);
+ if (get_kmmio_probe(p->addr)) {
+ ret = -EEXIST;
+ goto out;
+ }
++
++ pte = lookup_address(p->addr, &l);
++ if (!pte) {
++ ret = -EINVAL;
++ goto out;
++ }
++
+ kmmio_count++;
+ list_add_rcu(&p->list, &kmmio_probes);
+ while (size < size_lim) {
+ if (add_kmmio_fault_page(p->addr + size))
+ pr_err("Unable to set page fault.\n");
+- size += PAGE_SIZE;
++ size += page_level_size(l);
+ }
+ out:
+ spin_unlock_irqrestore(&kmmio_lock, flags);
+@@ -506,11 +530,17 @@ void unregister_kmmio_probe(struct kmmio_probe *p)
+ const unsigned long size_lim = p->len + (p->addr & ~PAGE_MASK);
+ struct kmmio_fault_page *release_list = NULL;
+ struct kmmio_delayed_release *drelease;
++ unsigned int l;
++ pte_t *pte;
++
++ pte = lookup_address(p->addr, &l);
++ if (!pte)
++ return;
+
+ spin_lock_irqsave(&kmmio_lock, flags);
+ while (size < size_lim) {
+ release_kmmio_fault_page(p->addr + size, &release_list);
+- size += PAGE_SIZE;
++ size += page_level_size(l);
+ }
+ list_del_rcu(&p->list);
+ kmmio_count--;
+diff --git a/crypto/asymmetric_keys/pkcs7_trust.c b/crypto/asymmetric_keys/pkcs7_trust.c
+index 0f6463b6692b..44c8447eb97e 100644
+--- a/crypto/asymmetric_keys/pkcs7_trust.c
++++ b/crypto/asymmetric_keys/pkcs7_trust.c
+@@ -174,6 +174,8 @@ int pkcs7_validate_trust(struct pkcs7_message *pkcs7,
+ int cached_ret = -ENOKEY;
+ int ret;
+
++ *_trusted = false;
++
+ for (p = pkcs7->certs; p; p = p->next)
+ p->seen = false;
+
+diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
+index 58f335ca2e75..568f2b942aac 100644
+--- a/drivers/acpi/acpi_processor.c
++++ b/drivers/acpi/acpi_processor.c
+@@ -475,6 +475,58 @@ static void acpi_processor_remove(struct acpi_device *device)
+ }
+ #endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
++#ifdef CONFIG_X86
++static bool acpi_hwp_native_thermal_lvt_set;
++static acpi_status __init acpi_hwp_native_thermal_lvt_osc(acpi_handle handle,
++ u32 lvl,
++ void *context,
++ void **rv)
++{
++ u8 sb_uuid_str[] = "4077A616-290C-47BE-9EBD-D87058713953";
++ u32 capbuf[2];
++ struct acpi_osc_context osc_context = {
++ .uuid_str = sb_uuid_str,
++ .rev = 1,
++ .cap.length = 8,
++ .cap.pointer = capbuf,
++ };
++
++ if (acpi_hwp_native_thermal_lvt_set)
++ return AE_CTRL_TERMINATE;
++
++ capbuf[0] = 0x0000;
++ capbuf[1] = 0x1000; /* set bit 12 */
++
++ if (ACPI_SUCCESS(acpi_run_osc(handle, &osc_context))) {
++ if (osc_context.ret.pointer && osc_context.ret.length > 1) {
++ u32 *capbuf_ret = osc_context.ret.pointer;
++
++ if (capbuf_ret[1] & 0x1000) {
++ acpi_handle_info(handle,
++ "_OSC native thermal LVT Acked\n");
++ acpi_hwp_native_thermal_lvt_set = true;
++ }
++ }
++ kfree(osc_context.ret.pointer);
++ }
++
++ return AE_OK;
++}
++
++void __init acpi_early_processor_osc(void)
++{
++ if (boot_cpu_has(X86_FEATURE_HWP)) {
++ acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
++ ACPI_UINT32_MAX,
++ acpi_hwp_native_thermal_lvt_osc,
++ NULL, NULL, NULL);
++ acpi_get_devices(ACPI_PROCESSOR_DEVICE_HID,
++ acpi_hwp_native_thermal_lvt_osc,
++ NULL, NULL);
++ }
++}
++#endif
++
+ /*
+ * The following ACPI IDs are known to be suitable for representing as
+ * processor devices.
+diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
+index 513e7230e3d0..fd6053908d24 100644
+--- a/drivers/acpi/bus.c
++++ b/drivers/acpi/bus.c
+@@ -612,6 +612,9 @@ static int __init acpi_bus_init(void)
+ goto error1;
+ }
+
++ /* Set capability bits for _OSC under processor scope */
++ acpi_early_processor_osc();
++
+ /*
+ * _OSC method may exist in module level code,
+ * so it must be run after ACPI_FULL_INITIALIZATION
+diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
+index ba4a61e964be..7db7f9dd7c47 100644
+--- a/drivers/acpi/internal.h
++++ b/drivers/acpi/internal.h
+@@ -121,6 +121,12 @@ void acpi_early_processor_set_pdc(void);
+ static inline void acpi_early_processor_set_pdc(void) {}
+ #endif
+
++#ifdef CONFIG_X86
++void acpi_early_processor_osc(void);
++#else
++static inline void acpi_early_processor_osc(void) {}
++#endif
++
+ /* --------------------------------------------------------------------------
+ Embedded Controller
+ -------------------------------------------------------------------------- */
+diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
+index cb0508af1459..5ab6fa9cfc2f 100644
+--- a/drivers/ata/libata-eh.c
++++ b/drivers/ata/libata-eh.c
+@@ -606,7 +606,7 @@ void ata_scsi_error(struct Scsi_Host *host)
+ ata_scsi_port_error_handler(host, ap);
+
+ /* finish or retry handled scmd's and clean up */
+- WARN_ON(host->host_failed || !list_empty(&eh_work_q));
++ WARN_ON(!list_empty(&eh_work_q));
+
+ DPRINTK("EXIT\n");
+ }
+diff --git a/drivers/base/module.c b/drivers/base/module.c
+index db930d3ee312..2a215780eda2 100644
+--- a/drivers/base/module.c
++++ b/drivers/base/module.c
+@@ -24,10 +24,12 @@ static char *make_driver_name(struct device_driver *drv)
+
+ static void module_create_drivers_dir(struct module_kobject *mk)
+ {
+- if (!mk || mk->drivers_dir)
+- return;
++ static DEFINE_MUTEX(drivers_dir_mutex);
+
+- mk->drivers_dir = kobject_create_and_add("drivers", &mk->kobj);
++ mutex_lock(&drivers_dir_mutex);
++ if (mk && !mk->drivers_dir)
++ mk->drivers_dir = kobject_create_and_add("drivers", &mk->kobj);
++ mutex_unlock(&drivers_dir_mutex);
+ }
+
+ void module_add_driver(struct module *mod, struct device_driver *drv)
+diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
+index 2af8b29656af..eecaa02ec222 100644
+--- a/drivers/block/mtip32xx/mtip32xx.c
++++ b/drivers/block/mtip32xx/mtip32xx.c
+@@ -2946,9 +2946,15 @@ static int mtip_service_thread(void *data)
+ * is in progress nor error handling is active
+ */
+ wait_event_interruptible(port->svc_wait, (port->flags) &&
+- !(port->flags & MTIP_PF_PAUSE_IO));
++ (port->flags & MTIP_PF_SVC_THD_WORK));
+
+- set_bit(MTIP_PF_SVC_THD_ACTIVE_BIT, &port->flags);
++ if (kthread_should_stop() ||
++ test_bit(MTIP_PF_SVC_THD_STOP_BIT, &port->flags))
++ goto st_out;
++
++ if (unlikely(test_bit(MTIP_DDF_REMOVE_PENDING_BIT,
++ &dd->dd_flag)))
++ goto st_out;
+
+ if (kthread_should_stop() ||
+ test_bit(MTIP_PF_SVC_THD_STOP_BIT, &port->flags))
+@@ -2962,6 +2968,8 @@ static int mtip_service_thread(void *data)
+ &dd->dd_flag)))
+ goto st_out;
+
++ set_bit(MTIP_PF_SVC_THD_ACTIVE_BIT, &port->flags);
++
+ restart_eh:
+ /* Demux bits: start with error handling */
+ if (test_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags)) {
+@@ -3004,10 +3012,8 @@ restart_eh:
+ }
+
+ if (test_bit(MTIP_PF_REBUILD_BIT, &port->flags)) {
+- if (mtip_ftl_rebuild_poll(dd) < 0)
+- set_bit(MTIP_DDF_REBUILD_FAILED_BIT,
+- &dd->dd_flag);
+- clear_bit(MTIP_PF_REBUILD_BIT, &port->flags);
++ if (mtip_ftl_rebuild_poll(dd) == 0)
++ clear_bit(MTIP_PF_REBUILD_BIT, &port->flags);
+ }
+ }
+
+@@ -3887,7 +3893,6 @@ static int mtip_block_initialize(struct driver_data *dd)
+
+ mtip_hw_debugfs_init(dd);
+
+-skip_create_disk:
+ memset(&dd->tags, 0, sizeof(dd->tags));
+ dd->tags.ops = &mtip_mq_ops;
+ dd->tags.nr_hw_queues = 1;
+@@ -3917,6 +3922,7 @@ skip_create_disk:
+ dd->disk->queue = dd->queue;
+ dd->queue->queuedata = dd;
+
++skip_create_disk:
+ /* Initialize the protocol layer. */
+ wait_for_rebuild = mtip_hw_get_identify(dd);
+ if (wait_for_rebuild < 0) {
+@@ -4078,7 +4084,8 @@ static int mtip_block_remove(struct driver_data *dd)
+ dd->bdev = NULL;
+ }
+ if (dd->disk) {
+- del_gendisk(dd->disk);
++ if (test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag))
++ del_gendisk(dd->disk);
+ if (dd->disk->queue) {
+ blk_cleanup_queue(dd->queue);
+ blk_mq_free_tag_set(&dd->tags);
+@@ -4119,7 +4126,8 @@ static int mtip_block_shutdown(struct driver_data *dd)
+ dev_info(&dd->pdev->dev,
+ "Shutting down %s ...\n", dd->disk->disk_name);
+
+- del_gendisk(dd->disk);
++ if (test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag))
++ del_gendisk(dd->disk);
+ if (dd->disk->queue) {
+ blk_cleanup_queue(dd->queue);
+ blk_mq_free_tag_set(&dd->tags);
+diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h
+index 76695265dffb..578ad36c9913 100644
+--- a/drivers/block/mtip32xx/mtip32xx.h
++++ b/drivers/block/mtip32xx/mtip32xx.h
+@@ -145,6 +145,11 @@ enum {
+ MTIP_PF_SR_CLEANUP_BIT = 7,
+ MTIP_PF_SVC_THD_STOP_BIT = 8,
+
++ MTIP_PF_SVC_THD_WORK = ((1 << MTIP_PF_EH_ACTIVE_BIT) |
++ (1 << MTIP_PF_ISSUE_CMDS_BIT) |
++ (1 << MTIP_PF_REBUILD_BIT) |
++ (1 << MTIP_PF_SVC_THD_STOP_BIT)),
++
+ /* below are bit numbers in 'dd_flag' defined in driver_data */
+ MTIP_DDF_SEC_LOCK_BIT = 0,
+ MTIP_DDF_REMOVE_PENDING_BIT = 1,
+diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
+index 39e5f7fae3ef..9911b2067286 100644
+--- a/drivers/block/nbd.c
++++ b/drivers/block/nbd.c
+@@ -557,8 +557,8 @@ static void do_nbd_request(struct request_queue *q)
+ req, req->cmd_type);
+
+ if (unlikely(!nbd->sock)) {
+- dev_err(disk_to_dev(nbd->disk),
+- "Attempted send on closed socket\n");
++ dev_err_ratelimited(disk_to_dev(nbd->disk),
++ "Attempted send on closed socket\n");
+ req->errors++;
+ nbd_end_request(nbd, req);
+ spin_lock_irq(q->queue_lock);
+diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
+index d48715b287e6..b0414702e61a 100644
+--- a/drivers/block/paride/pd.c
++++ b/drivers/block/paride/pd.c
+@@ -126,7 +126,7 @@
+ */
+ #include <linux/types.h>
+
+-static bool verbose = 0;
++static int verbose = 0;
+ static int major = PD_MAJOR;
+ static char *name = PD_NAME;
+ static int cluster = 64;
+@@ -161,7 +161,7 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_GEO, D_SBY, D_DLY, D_SLV};
+ static DEFINE_MUTEX(pd_mutex);
+ static DEFINE_SPINLOCK(pd_lock);
+
+-module_param(verbose, bool, 0);
++module_param(verbose, int, 0);
+ module_param(major, int, 0);
+ module_param(name, charp, 0);
+ module_param(cluster, int, 0);
+diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c
+index 2596042eb987..ada45058e04d 100644
+--- a/drivers/block/paride/pt.c
++++ b/drivers/block/paride/pt.c
+@@ -117,7 +117,7 @@
+
+ */
+
+-static bool verbose = 0;
++static int verbose = 0;
+ static int major = PT_MAJOR;
+ static char *name = PT_NAME;
+ static int disable = 0;
+@@ -152,7 +152,7 @@ static int (*drives[4])[6] = {&drive0, &drive1, &drive2, &drive3};
+
+ #include <asm/uaccess.h>
+
+-module_param(verbose, bool, 0);
++module_param(verbose, int, 0);
+ module_param(major, int, 0);
+ module_param(name, charp, 0);
+ module_param_array(drive0, int, NULL, 0);
+diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
+index bf75f6361773..4bc508c14900 100644
+--- a/drivers/char/ipmi/ipmi_msghandler.c
++++ b/drivers/char/ipmi/ipmi_msghandler.c
+@@ -3813,6 +3813,7 @@ static void handle_new_recv_msgs(ipmi_smi_t intf)
+ while (!list_empty(&intf->waiting_rcv_msgs)) {
+ smi_msg = list_entry(intf->waiting_rcv_msgs.next,
+ struct ipmi_smi_msg, link);
++ list_del(&smi_msg->link);
+ if (!run_to_completion)
+ spin_unlock_irqrestore(&intf->waiting_rcv_msgs_lock,
+ flags);
+@@ -3822,11 +3823,14 @@ static void handle_new_recv_msgs(ipmi_smi_t intf)
+ if (rv > 0) {
+ /*
+ * To preserve message order, quit if we
+- * can't handle a message.
++ * can't handle a message. Add the message
++ * back at the head, this is safe because this
++ * tasklet is the only thing that pulls the
++ * messages.
+ */
++ list_add(&smi_msg->link, &intf->waiting_rcv_msgs);
+ break;
+ } else {
+- list_del(&smi_msg->link);
+ if (rv == 0)
+ /* Message handled */
+ ipmi_free_smi_msg(smi_msg);
+diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
+index 1082d4bb016a..591629cc32d5 100644
+--- a/drivers/char/tpm/tpm-chip.c
++++ b/drivers/char/tpm/tpm-chip.c
+@@ -133,6 +133,8 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,
+ chip->cdev.owner = chip->pdev->driver->owner;
+ chip->cdev.kobj.parent = &chip->dev.kobj;
+
++ devm_add_action(dev, (void (*)(void *)) put_device, &chip->dev);
++
+ return chip;
+ }
+ EXPORT_SYMBOL_GPL(tpmm_chip_alloc);
+@@ -168,7 +170,7 @@ static int tpm_dev_add_device(struct tpm_chip *chip)
+ static void tpm_dev_del_device(struct tpm_chip *chip)
+ {
+ cdev_del(&chip->cdev);
+- device_unregister(&chip->dev);
++ device_del(&chip->dev);
+ }
+
+ static int tpm1_chip_register(struct tpm_chip *chip)
+diff --git a/drivers/clk/qcom/gcc-msm8916.c b/drivers/clk/qcom/gcc-msm8916.c
+index 5d75bffab141..0f721998b2d4 100644
+--- a/drivers/clk/qcom/gcc-msm8916.c
++++ b/drivers/clk/qcom/gcc-msm8916.c
+@@ -1961,6 +1961,7 @@ static struct clk_branch gcc_crypto_ahb_clk = {
+ "pcnoc_bfdcd_clk_src",
+ },
+ .num_parents = 1,
++ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_branch2_ops,
+ },
+ },
+@@ -1996,6 +1997,7 @@ static struct clk_branch gcc_crypto_clk = {
+ "crypto_clk_src",
+ },
+ .num_parents = 1,
++ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_branch2_ops,
+ },
+ },
+diff --git a/drivers/clk/qcom/gcc-msm8960.c b/drivers/clk/qcom/gcc-msm8960.c
+index eb6a4f9fa107..476d2090c96b 100644
+--- a/drivers/clk/qcom/gcc-msm8960.c
++++ b/drivers/clk/qcom/gcc-msm8960.c
+@@ -2753,7 +2753,7 @@ static struct clk_rcg ce3_src = {
+ },
+ .freq_tbl = clk_tbl_ce3,
+ .clkr = {
+- .enable_reg = 0x2c08,
++ .enable_reg = 0x36c0,
+ .enable_mask = BIT(7),
+ .hw.init = &(struct clk_init_data){
+ .name = "ce3_src",
+@@ -2769,7 +2769,7 @@ static struct clk_branch ce3_core_clk = {
+ .halt_reg = 0x2fdc,
+ .halt_bit = 5,
+ .clkr = {
+- .enable_reg = 0x36c4,
++ .enable_reg = 0x36cc,
+ .enable_mask = BIT(4),
+ .hw.init = &(struct clk_init_data){
+ .name = "ce3_core_clk",
+diff --git a/drivers/clk/rockchip/clk-mmc-phase.c b/drivers/clk/rockchip/clk-mmc-phase.c
+index c842e3b60f21..2c111c2cdccc 100644
+--- a/drivers/clk/rockchip/clk-mmc-phase.c
++++ b/drivers/clk/rockchip/clk-mmc-phase.c
+@@ -131,6 +131,7 @@ struct clk *rockchip_clk_register_mmc(const char *name,
+ if (!mmc_clock)
+ return NULL;
+
++ init.flags = 0;
+ init.num_parents = num_parents;
+ init.parent_names = parent_names;
+ init.ops = &rockchip_mmc_clk_ops;
+diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
+index edb5d489ae61..3b9de3264534 100644
+--- a/drivers/clk/rockchip/clk.c
++++ b/drivers/clk/rockchip/clk.c
+@@ -70,7 +70,7 @@ static struct clk *rockchip_clk_register_branch(const char *name,
+ if (gate_offset >= 0) {
+ gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+ if (!gate)
+- return ERR_PTR(-ENOMEM);
++ goto err_gate;
+
+ gate->flags = gate_flags;
+ gate->reg = base + gate_offset;
+@@ -82,7 +82,7 @@ static struct clk *rockchip_clk_register_branch(const char *name,
+ if (div_width > 0) {
+ div = kzalloc(sizeof(*div), GFP_KERNEL);
+ if (!div)
+- return ERR_PTR(-ENOMEM);
++ goto err_div;
+
+ div->flags = div_flags;
+ div->reg = base + muxdiv_offset;
+@@ -100,6 +100,11 @@ static struct clk *rockchip_clk_register_branch(const char *name,
+ flags);
+
+ return clk;
++err_div:
++ kfree(gate);
++err_gate:
++ kfree(mux);
++ return ERR_PTR(-ENOMEM);
+ }
+
+ static struct clk *rockchip_clk_register_frac_branch(const char *name,
+diff --git a/drivers/clk/versatile/clk-sp810.c b/drivers/clk/versatile/clk-sp810.c
+index 5122ef25f595..e63c3ef9b5ec 100644
+--- a/drivers/clk/versatile/clk-sp810.c
++++ b/drivers/clk/versatile/clk-sp810.c
+@@ -141,6 +141,7 @@ void __init clk_sp810_of_setup(struct device_node *node)
+ const char *parent_names[2];
+ char name[12];
+ struct clk_init_data init;
++ static int instance;
+ int i;
+
+ if (!sp810) {
+@@ -172,7 +173,7 @@ void __init clk_sp810_of_setup(struct device_node *node)
+ init.num_parents = ARRAY_SIZE(parent_names);
+
+ for (i = 0; i < ARRAY_SIZE(sp810->timerclken); i++) {
+- snprintf(name, ARRAY_SIZE(name), "timerclken%d", i);
++ snprintf(name, sizeof(name), "sp810_%d_%d", instance, i);
+
+ sp810->timerclken[i].sp810 = sp810;
+ sp810->timerclken[i].channel = i;
+@@ -184,5 +185,6 @@ void __init clk_sp810_of_setup(struct device_node *node)
+ }
+
+ of_clk_add_provider(node, clk_sp810_timerclken_of_get, sp810);
++ instance++;
+ }
+ CLK_OF_DECLARE(sp810, "arm,sp810", clk_sp810_of_setup);
+diff --git a/drivers/crypto/ux500/hash/hash_core.c b/drivers/crypto/ux500/hash/hash_core.c
+index 5f5f360628fc..c5e6222a6ca2 100644
+--- a/drivers/crypto/ux500/hash/hash_core.c
++++ b/drivers/crypto/ux500/hash/hash_core.c
+@@ -797,7 +797,7 @@ static int hash_process_data(struct hash_device_data *device_data,
+ &device_data->state);
+ memmove(req_ctx->state.buffer,
+ device_data->state.buffer,
+- HASH_BLOCK_SIZE / sizeof(u32));
++ HASH_BLOCK_SIZE);
+ if (ret) {
+ dev_err(device_data->dev,
+ "%s: hash_resume_state() failed!\n",
+@@ -848,7 +848,7 @@ static int hash_process_data(struct hash_device_data *device_data,
+
+ memmove(device_data->state.buffer,
+ req_ctx->state.buffer,
+- HASH_BLOCK_SIZE / sizeof(u32));
++ HASH_BLOCK_SIZE);
+ if (ret) {
+ dev_err(device_data->dev, "%s: hash_save_state() failed!\n",
+ __func__);
+diff --git a/drivers/crypto/vmx/aes_cbc.c b/drivers/crypto/vmx/aes_cbc.c
+index c8e7f653e5d3..f508cea02039 100644
+--- a/drivers/crypto/vmx/aes_cbc.c
++++ b/drivers/crypto/vmx/aes_cbc.c
+@@ -167,7 +167,7 @@ struct crypto_alg p8_aes_cbc_alg = {
+ .cra_name = "cbc(aes)",
+ .cra_driver_name = "p8_aes_cbc",
+ .cra_module = THIS_MODULE,
+- .cra_priority = 1000,
++ .cra_priority = 2000,
+ .cra_type = &crypto_blkcipher_type,
+ .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_NEED_FALLBACK,
+ .cra_alignmask = 0,
+diff --git a/drivers/crypto/vmx/aes_ctr.c b/drivers/crypto/vmx/aes_ctr.c
+index 266e708d63df..d8fa3b4ec17f 100644
+--- a/drivers/crypto/vmx/aes_ctr.c
++++ b/drivers/crypto/vmx/aes_ctr.c
+@@ -151,7 +151,7 @@ struct crypto_alg p8_aes_ctr_alg = {
+ .cra_name = "ctr(aes)",
+ .cra_driver_name = "p8_aes_ctr",
+ .cra_module = THIS_MODULE,
+- .cra_priority = 1000,
++ .cra_priority = 2000,
+ .cra_type = &crypto_blkcipher_type,
+ .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_NEED_FALLBACK,
+ .cra_alignmask = 0,
+diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
+index ffa809f30b19..c5e6c82516ce 100644
+--- a/drivers/dma/at_xdmac.c
++++ b/drivers/dma/at_xdmac.c
+@@ -238,7 +238,7 @@ struct at_xdmac_lld {
+ u32 mbr_cfg; /* Configuration Register */
+ };
+
+-
++/* 64-bit alignment needed to update CNDA and CUBC registers in an atomic way. */
+ struct at_xdmac_desc {
+ struct at_xdmac_lld lld;
+ enum dma_transfer_direction direction;
+@@ -249,7 +249,7 @@ struct at_xdmac_desc {
+ unsigned int xfer_size;
+ struct list_head descs_list;
+ struct list_head xfer_node;
+-};
++} __aligned(sizeof(u64));
+
+ static inline void __iomem *at_xdmac_chan_reg_base(struct at_xdmac *atxdmac, unsigned int chan_nb)
+ {
+@@ -930,6 +930,7 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ u32 cur_nda, check_nda, cur_ubc, mask, value;
+ u8 dwidth = 0;
+ unsigned long flags;
++ bool initd;
+
+ ret = dma_cookie_status(chan, cookie, txstate);
+ if (ret == DMA_COMPLETE)
+@@ -954,7 +955,16 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ residue = desc->xfer_size;
+ /*
+ * Flush FIFO: only relevant when the transfer is source peripheral
+- * synchronized.
++ * synchronized. Flush is needed before reading CUBC because data in
++ * the FIFO are not reported by CUBC. Reporting a residue of the
++ * transfer length while we have data in FIFO can cause issue.
++ * Usecase: atmel USART has a timeout which means I have received
++ * characters but there is no more character received for a while. On
++ * timeout, it requests the residue. If the data are in the DMA FIFO,
++ * we will return a residue of the transfer length. It means no data
++ * received. If an application is waiting for these data, it will hang
++ * since we won't have another USART timeout without receiving new
++ * data.
+ */
+ mask = AT_XDMAC_CC_TYPE | AT_XDMAC_CC_DSYNC;
+ value = AT_XDMAC_CC_TYPE_PER_TRAN | AT_XDMAC_CC_DSYNC_PER2MEM;
+@@ -965,34 +975,43 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ }
+
+ /*
+- * When processing the residue, we need to read two registers but we
+- * can't do it in an atomic way. AT_XDMAC_CNDA is used to find where
+- * we stand in the descriptor list and AT_XDMAC_CUBC is used
+- * to know how many data are remaining for the current descriptor.
+- * Since the dma channel is not paused to not loose data, between the
+- * AT_XDMAC_CNDA and AT_XDMAC_CUBC read, we may have change of
+- * descriptor.
+- * For that reason, after reading AT_XDMAC_CUBC, we check if we are
+- * still using the same descriptor by reading a second time
+- * AT_XDMAC_CNDA. If AT_XDMAC_CNDA has changed, it means we have to
+- * read again AT_XDMAC_CUBC.
++ * The easiest way to compute the residue should be to pause the DMA
++ * but doing this can lead to miss some data as some devices don't
++ * have FIFO.
++ * We need to read several registers because:
++ * - DMA is running therefore a descriptor change is possible while
++ * reading these registers
++ * - When the block transfer is done, the value of the CUBC register
++ * is set to its initial value until the fetch of the next descriptor.
++ * This value will corrupt the residue calculation so we have to skip
++ * it.
++ *
++ * INITD -------- ------------
++ * |____________________|
++ * _______________________ _______________
++ * NDA @desc2 \/ @desc3
++ * _______________________/\_______________
++ * __________ ___________ _______________
++ * CUBC 0 \/ MAX desc1 \/ MAX desc2
++ * __________/\___________/\_______________
++ *
++ * Since descriptors are aligned on 64 bits, we can assume that
++ * the update of NDA and CUBC is atomic.
+ * Memory barriers are used to ensure the read order of the registers.
+- * A max number of retries is set because unlikely it can never ends if
+- * we are transferring a lot of data with small buffers.
++ * A max number of retries is set because unlikely it could never ends.
+ */
+- cur_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
+- rmb();
+- cur_ubc = at_xdmac_chan_read(atchan, AT_XDMAC_CUBC);
+ for (retry = 0; retry < AT_XDMAC_RESIDUE_MAX_RETRIES; retry++) {
+- rmb();
+ check_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
+-
+- if (likely(cur_nda == check_nda))
+- break;
+-
+- cur_nda = check_nda;
++ rmb();
++ initd = !!(at_xdmac_chan_read(atchan, AT_XDMAC_CC) & AT_XDMAC_CC_INITD);
+ rmb();
+ cur_ubc = at_xdmac_chan_read(atchan, AT_XDMAC_CUBC);
++ rmb();
++ cur_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
++ rmb();
++
++ if ((check_nda == cur_nda) && initd)
++ break;
+ }
+
+ if (unlikely(retry >= AT_XDMAC_RESIDUE_MAX_RETRIES)) {
+@@ -1001,6 +1020,19 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ }
+
+ /*
++ * Flush FIFO: only relevant when the transfer is source peripheral
++ * synchronized. Another flush is needed here because CUBC is updated
++ * when the controller sends the data write command. It can lead to
++ * report data that are not written in the memory or the device. The
++ * FIFO flush ensures that data are really written.
++ */
++ if ((desc->lld.mbr_cfg & mask) == value) {
++ at_xdmac_write(atxdmac, AT_XDMAC_GSWF, atchan->mask);
++ while (!(at_xdmac_chan_read(atchan, AT_XDMAC_CIS) & AT_XDMAC_CIS_FIS))
++ cpu_relax();
++ }
++
++ /*
+ * Remove size of all microblocks already transferred and the current
+ * one. Then add the remaining size to transfer of the current
+ * microblock.
+diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
+index 63226e9036a1..1f2c86d81176 100644
+--- a/drivers/firmware/efi/efi.c
++++ b/drivers/firmware/efi/efi.c
+@@ -170,6 +170,7 @@ static int generic_ops_register(void)
+ {
+ generic_ops.get_variable = efi.get_variable;
+ generic_ops.set_variable = efi.set_variable;
++ generic_ops.set_variable_nonblocking = efi.set_variable_nonblocking;
+ generic_ops.get_next_variable = efi.get_next_variable;
+ generic_ops.query_variable_store = efi_query_variable_store;
+
+diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+index be9fa8220499..767d0eaabe97 100644
+--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
++++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+@@ -335,6 +335,8 @@ atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane,
+
+ atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff,
+ factor_reg);
++ } else {
++ atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff, 0);
+ }
+ }
+
+diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
+index 71dcbc64ae98..7f0356ea0bbf 100644
+--- a/drivers/gpu/drm/drm_dp_helper.c
++++ b/drivers/gpu/drm/drm_dp_helper.c
+@@ -432,7 +432,7 @@ static u32 drm_dp_i2c_functionality(struct i2c_adapter *adapter)
+ */
+ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
+ {
+- unsigned int retry;
++ unsigned int retry, defer_i2c;
+ int ret;
+
+ /*
+@@ -440,7 +440,7 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
+ * is required to retry at least seven times upon receiving AUX_DEFER
+ * before giving up the AUX transaction.
+ */
+- for (retry = 0; retry < 7; retry++) {
++ for (retry = 0, defer_i2c = 0; retry < (7 + defer_i2c); retry++) {
+ mutex_lock(&aux->hw_mutex);
+ ret = aux->transfer(aux, msg);
+ mutex_unlock(&aux->hw_mutex);
+@@ -499,7 +499,13 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
+
+ case DP_AUX_I2C_REPLY_DEFER:
+ DRM_DEBUG_KMS("I2C defer\n");
++ /* DP Compliance Test 4.2.2.5 Requirement:
++ * Must have at least 7 retries for I2C defers on the
++ * transaction to pass this test
++ */
+ aux->i2c_defer_count++;
++ if (defer_i2c < 7)
++ defer_i2c++;
+ usleep_range(400, 500);
+ continue;
+
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 10b8839cbd0c..52dea773bb1b 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -2862,11 +2862,9 @@ static void drm_dp_destroy_connector_work(struct work_struct *work)
+ drm_dp_port_teardown_pdt(port, port->pdt);
+
+ if (!port->input && port->vcpi.vcpi > 0) {
+- if (mgr->mst_state) {
+- drm_dp_mst_reset_vcpi_slots(mgr, port);
+- drm_dp_update_payload_part1(mgr);
+- drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
+- }
++ drm_dp_mst_reset_vcpi_slots(mgr, port);
++ drm_dp_update_payload_part1(mgr);
++ drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
+ }
+
+ kref_put(&port->kref, drm_dp_free_mst_port);
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index 56323732c748..5250596a612e 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -7129,12 +7129,14 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_encoder *encoder;
++ int i;
+ u32 val, final;
+ bool has_lvds = false;
+ bool has_cpu_edp = false;
+ bool has_panel = false;
+ bool has_ck505 = false;
+ bool can_ssc = false;
++ bool using_ssc_source = false;
+
+ /* We need to take the global config into account */
+ for_each_intel_encoder(dev, encoder) {
+@@ -7161,8 +7163,22 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ can_ssc = true;
+ }
+
+- DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
+- has_panel, has_lvds, has_ck505);
++ /* Check if any DPLLs are using the SSC source */
++ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
++ u32 temp = I915_READ(PCH_DPLL(i));
++
++ if (!(temp & DPLL_VCO_ENABLE))
++ continue;
++
++ if ((temp & PLL_REF_INPUT_MASK) ==
++ PLLB_REF_INPUT_SPREADSPECTRUMIN) {
++ using_ssc_source = true;
++ break;
++ }
++ }
++
++ DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n",
++ has_panel, has_lvds, has_ck505, using_ssc_source);
+
+ /* Ironlake: try to setup display ref clock before DPLL
+ * enabling. This is only under driver's control after
+@@ -7199,9 +7215,9 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
+ } else
+ final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+- } else {
+- final |= DREF_SSC_SOURCE_DISABLE;
+- final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
++ } else if (using_ssc_source) {
++ final |= DREF_SSC_SOURCE_ENABLE;
++ final |= DREF_SSC1_ENABLE;
+ }
+
+ if (final == val)
+@@ -7247,7 +7263,7 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+ } else {
+- DRM_DEBUG_KMS("Disabling SSC entirely\n");
++ DRM_DEBUG_KMS("Disabling CPU source output\n");
+
+ val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+
+@@ -7258,16 +7274,20 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+
+- /* Turn off the SSC source */
+- val &= ~DREF_SSC_SOURCE_MASK;
+- val |= DREF_SSC_SOURCE_DISABLE;
++ if (!using_ssc_source) {
++ DRM_DEBUG_KMS("Disabling SSC source\n");
+
+- /* Turn off SSC1 */
+- val &= ~DREF_SSC1_ENABLE;
++ /* Turn off the SSC source */
++ val &= ~DREF_SSC_SOURCE_MASK;
++ val |= DREF_SSC_SOURCE_DISABLE;
+
+- I915_WRITE(PCH_DREF_CONTROL, val);
+- POSTING_READ(PCH_DREF_CONTROL);
+- udelay(200);
++ /* Turn off SSC1 */
++ val &= ~DREF_SSC1_ENABLE;
++
++ I915_WRITE(PCH_DREF_CONTROL, val);
++ POSTING_READ(PCH_DREF_CONTROL);
++ udelay(200);
++ }
+ }
+
+ BUG_ON(val != final);
+diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
+index b7e20dee64c4..09844b5fe250 100644
+--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
++++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
+@@ -1814,6 +1814,17 @@ i915_dispatch_execbuffer(struct intel_engine_cs *ring,
+ return 0;
+ }
+
++static void cleanup_phys_status_page(struct intel_engine_cs *ring)
++{
++ struct drm_i915_private *dev_priv = to_i915(ring->dev);
++
++ if (!dev_priv->status_page_dmah)
++ return;
++
++ drm_pci_free(ring->dev, dev_priv->status_page_dmah);
++ ring->status_page.page_addr = NULL;
++}
++
+ static void cleanup_status_page(struct intel_engine_cs *ring)
+ {
+ struct drm_i915_gem_object *obj;
+@@ -1830,9 +1841,9 @@ static void cleanup_status_page(struct intel_engine_cs *ring)
+
+ static int init_status_page(struct intel_engine_cs *ring)
+ {
+- struct drm_i915_gem_object *obj;
++ struct drm_i915_gem_object *obj = ring->status_page.obj;
+
+- if ((obj = ring->status_page.obj) == NULL) {
++ if (obj == NULL) {
+ unsigned flags;
+ int ret;
+
+@@ -1985,7 +1996,7 @@ static int intel_init_ring_buffer(struct drm_device *dev,
+ if (ret)
+ goto error;
+ } else {
+- BUG_ON(ring->id != RCS);
++ WARN_ON(ring->id != RCS);
+ ret = init_phys_status_page(ring);
+ if (ret)
+ goto error;
+@@ -2049,7 +2060,12 @@ void intel_cleanup_ring_buffer(struct intel_engine_cs *ring)
+ if (ring->cleanup)
+ ring->cleanup(ring);
+
+- cleanup_status_page(ring);
++ if (I915_NEED_GFX_HWS(ring->dev)) {
++ cleanup_status_page(ring);
++ } else {
++ WARN_ON(ring->id != RCS);
++ cleanup_phys_status_page(ring);
++ }
+
+ i915_cmd_parser_fini_ring(ring);
+
+diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+index cf43f77be254..bb29f1e482d7 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+@@ -572,7 +572,8 @@ nouveau_fbcon_init(struct drm_device *dev)
+ if (ret)
+ goto fini;
+
+- fbcon->helper.fbdev->pixmap.buf_align = 4;
++ if (fbcon->helper.fbdev)
++ fbcon->helper.fbdev->pixmap.buf_align = 4;
+ return 0;
+
+ fini:
+diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
+index dac78ad24b31..79bab6fd76bb 100644
+--- a/drivers/gpu/drm/radeon/atombios_crtc.c
++++ b/drivers/gpu/drm/radeon/atombios_crtc.c
+@@ -1739,6 +1739,7 @@ static u32 radeon_get_pll_use_mask(struct drm_crtc *crtc)
+ static int radeon_get_shared_dp_ppll(struct drm_crtc *crtc)
+ {
+ struct drm_device *dev = crtc->dev;
++ struct radeon_device *rdev = dev->dev_private;
+ struct drm_crtc *test_crtc;
+ struct radeon_crtc *test_radeon_crtc;
+
+@@ -1748,6 +1749,10 @@ static int radeon_get_shared_dp_ppll(struct drm_crtc *crtc)
+ test_radeon_crtc = to_radeon_crtc(test_crtc);
+ if (test_radeon_crtc->encoder &&
+ ENCODER_MODE_IS_DP(atombios_get_encoder_mode(test_radeon_crtc->encoder))) {
++ /* PPLL2 is exclusive to UNIPHYA on DCE61 */
++ if (ASIC_IS_DCE61(rdev) && !ASIC_IS_DCE8(rdev) &&
++ test_radeon_crtc->pll_id == ATOM_PPLL2)
++ continue;
+ /* for DP use the same PLL for all */
+ if (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID)
+ return test_radeon_crtc->pll_id;
+@@ -1769,6 +1774,7 @@ static int radeon_get_shared_nondp_ppll(struct drm_crtc *crtc)
+ {
+ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
++ struct radeon_device *rdev = dev->dev_private;
+ struct drm_crtc *test_crtc;
+ struct radeon_crtc *test_radeon_crtc;
+ u32 adjusted_clock, test_adjusted_clock;
+@@ -1784,6 +1790,10 @@ static int radeon_get_shared_nondp_ppll(struct drm_crtc *crtc)
+ test_radeon_crtc = to_radeon_crtc(test_crtc);
+ if (test_radeon_crtc->encoder &&
+ !ENCODER_MODE_IS_DP(atombios_get_encoder_mode(test_radeon_crtc->encoder))) {
++ /* PPLL2 is exclusive to UNIPHYA on DCE61 */
++ if (ASIC_IS_DCE61(rdev) && !ASIC_IS_DCE8(rdev) &&
++ test_radeon_crtc->pll_id == ATOM_PPLL2)
++ continue;
+ /* check if we are already driving this connector with another crtc */
+ if (test_radeon_crtc->connector == radeon_crtc->connector) {
+ /* if we are, return that pll */
+diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
+index 604c44d88e7a..83b3eb2e444a 100644
+--- a/drivers/gpu/drm/radeon/radeon_device.c
++++ b/drivers/gpu/drm/radeon/radeon_device.c
+@@ -630,6 +630,23 @@ void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
+ /*
+ * GPU helpers function.
+ */
++
++/**
++ * radeon_device_is_virtual - check if we are running is a virtual environment
++ *
++ * Check if the asic has been passed through to a VM (all asics).
++ * Used at driver startup.
++ * Returns true if virtual or false if not.
++ */
++static bool radeon_device_is_virtual(void)
++{
++#ifdef CONFIG_X86
++ return boot_cpu_has(X86_FEATURE_HYPERVISOR);
++#else
++ return false;
++#endif
++}
++
+ /**
+ * radeon_card_posted - check if the hw has already been initialized
+ *
+@@ -643,6 +660,10 @@ bool radeon_card_posted(struct radeon_device *rdev)
+ {
+ uint32_t reg;
+
++ /* for pass through, always force asic_init */
++ if (radeon_device_is_virtual())
++ return false;
++
+ /* required for EFI mode on macbook2,1 which uses an r5xx asic */
+ if (efi_enabled(EFI_BOOT) &&
+ (rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) &&
+diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
+index c4e0e69b688d..f666277a8993 100644
+--- a/drivers/gpu/drm/radeon/si_dpm.c
++++ b/drivers/gpu/drm/radeon/si_dpm.c
+@@ -2925,6 +2925,7 @@ static struct si_dpm_quirk si_dpm_quirk_list[] = {
+ /* PITCAIRN - https://bugs.freedesktop.org/show_bug.cgi?id=76490 */
+ { PCI_VENDOR_ID_ATI, 0x6810, 0x1462, 0x3036, 0, 120000 },
+ { PCI_VENDOR_ID_ATI, 0x6811, 0x174b, 0xe271, 0, 120000 },
++ { PCI_VENDOR_ID_ATI, 0x6811, 0x174b, 0x2015, 0, 120000 },
+ { PCI_VENDOR_ID_ATI, 0x6810, 0x174b, 0xe271, 85000, 90000 },
+ { PCI_VENDOR_ID_ATI, 0x6811, 0x1762, 0x2015, 0, 120000 },
+ { PCI_VENDOR_ID_ATI, 0x6811, 0x1043, 0x2015, 0, 120000 },
+@@ -2959,6 +2960,10 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
+ }
+ ++p;
+ }
++ /* limit mclk on all R7 370 parts for stability */
++ if (rdev->pdev->device == 0x6811 &&
++ rdev->pdev->revision == 0x81)
++ max_mclk = 120000;
+
+ if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
+ ni_dpm_vblank_too_short(rdev))
+diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
+index 5fc16cecd3ba..cd8d183dcfe5 100644
+--- a/drivers/gpu/drm/udl/udl_fb.c
++++ b/drivers/gpu/drm/udl/udl_fb.c
+@@ -546,7 +546,7 @@ static int udlfb_create(struct drm_fb_helper *helper,
+
+ return ret;
+ out_gfree:
+- drm_gem_object_unreference(&ufbdev->ufb.obj->base);
++ drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base);
+ out:
+ return ret;
+ }
+diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c
+index 2a0a784ab6ee..d7528e0d8442 100644
+--- a/drivers/gpu/drm/udl/udl_gem.c
++++ b/drivers/gpu/drm/udl/udl_gem.c
+@@ -52,7 +52,7 @@ udl_gem_create(struct drm_file *file,
+ return ret;
+ }
+
+- drm_gem_object_unreference(&obj->base);
++ drm_gem_object_unreference_unlocked(&obj->base);
+ *handle_p = handle;
+ return 0;
+ }
+diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
+index bc23db196930..bf039dbaa7eb 100644
+--- a/drivers/hid/hid-core.c
++++ b/drivers/hid/hid-core.c
+@@ -1864,6 +1864,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
++ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DUAL_ACTION) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
+diff --git a/drivers/hid/hid-elo.c b/drivers/hid/hid-elo.c
+index 4e49462870ab..d0c8a1c1e1fe 100644
+--- a/drivers/hid/hid-elo.c
++++ b/drivers/hid/hid-elo.c
+@@ -259,7 +259,7 @@ static void elo_remove(struct hid_device *hdev)
+ struct elo_priv *priv = hid_get_drvdata(hdev);
+
+ hid_hw_stop(hdev);
+- flush_workqueue(wq);
++ cancel_delayed_work_sync(&priv->work);
+ kfree(priv);
+ }
+
+diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
+index 2f1ddca6f2e0..700145b15088 100644
+--- a/drivers/hid/usbhid/hiddev.c
++++ b/drivers/hid/usbhid/hiddev.c
+@@ -516,13 +516,13 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
+ goto inval;
+ } else if (uref->usage_index >= field->report_count)
+ goto inval;
+-
+- else if ((cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES) &&
+- (uref_multi->num_values > HID_MAX_MULTI_USAGES ||
+- uref->usage_index + uref_multi->num_values > field->report_count))
+- goto inval;
+ }
+
++ if ((cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES) &&
++ (uref_multi->num_values > HID_MAX_MULTI_USAGES ||
++ uref->usage_index + uref_multi->num_values > field->report_count))
++ goto inval;
++
+ switch (cmd) {
+ case HIDIOCGUSAGE:
+ uref->value = field->value[uref->usage_index];
+diff --git a/drivers/hwmon/max1111.c b/drivers/hwmon/max1111.c
+index f67d71ee8386..159f50d0ae39 100644
+--- a/drivers/hwmon/max1111.c
++++ b/drivers/hwmon/max1111.c
+@@ -85,6 +85,9 @@ static struct max1111_data *the_max1111;
+
+ int max1111_read_channel(int channel)
+ {
++ if (!the_max1111 || !the_max1111->spi)
++ return -ENODEV;
++
+ return max1111_read(&the_max1111->spi->dev, channel);
+ }
+ EXPORT_SYMBOL(max1111_read_channel);
+@@ -258,6 +261,9 @@ static int max1111_remove(struct spi_device *spi)
+ {
+ struct max1111_data *data = spi_get_drvdata(spi);
+
++#ifdef CONFIG_SHARPSL_PM
++ the_max1111 = NULL;
++#endif
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&spi->dev.kobj, &max1110_attr_group);
+ sysfs_remove_group(&spi->dev.kobj, &max1111_attr_group);
+diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c
+index b29c7500461a..f54ece8fce78 100644
+--- a/drivers/i2c/busses/i2c-exynos5.c
++++ b/drivers/i2c/busses/i2c-exynos5.c
+@@ -671,7 +671,9 @@ static int exynos5_i2c_xfer(struct i2c_adapter *adap,
+ return -EIO;
+ }
+
+- clk_prepare_enable(i2c->clk);
++ ret = clk_enable(i2c->clk);
++ if (ret)
++ return ret;
+
+ for (i = 0; i < num; i++, msgs++) {
+ stop = (i == num - 1);
+@@ -695,7 +697,7 @@ static int exynos5_i2c_xfer(struct i2c_adapter *adap,
+ }
+
+ out:
+- clk_disable_unprepare(i2c->clk);
++ clk_disable(i2c->clk);
+ return ret;
+ }
+
+@@ -747,7 +749,9 @@ static int exynos5_i2c_probe(struct platform_device *pdev)
+ return -ENOENT;
+ }
+
+- clk_prepare_enable(i2c->clk);
++ ret = clk_prepare_enable(i2c->clk);
++ if (ret)
++ return ret;
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ i2c->regs = devm_ioremap_resource(&pdev->dev, mem);
+@@ -799,6 +803,10 @@ static int exynos5_i2c_probe(struct platform_device *pdev)
+
+ platform_set_drvdata(pdev, i2c);
+
++ clk_disable(i2c->clk);
++
++ return 0;
++
+ err_clk:
+ clk_disable_unprepare(i2c->clk);
+ return ret;
+@@ -810,6 +818,8 @@ static int exynos5_i2c_remove(struct platform_device *pdev)
+
+ i2c_del_adapter(&i2c->adap);
+
++ clk_unprepare(i2c->clk);
++
+ return 0;
+ }
+
+@@ -821,6 +831,8 @@ static int exynos5_i2c_suspend_noirq(struct device *dev)
+
+ i2c->suspended = 1;
+
++ clk_unprepare(i2c->clk);
++
+ return 0;
+ }
+
+@@ -830,7 +842,9 @@ static int exynos5_i2c_resume_noirq(struct device *dev)
+ struct exynos5_i2c *i2c = platform_get_drvdata(pdev);
+ int ret = 0;
+
+- clk_prepare_enable(i2c->clk);
++ ret = clk_prepare_enable(i2c->clk);
++ if (ret)
++ return ret;
+
+ ret = exynos5_hsi2c_clock_setup(i2c);
+ if (ret) {
+@@ -839,7 +853,7 @@ static int exynos5_i2c_resume_noirq(struct device *dev)
+ }
+
+ exynos5_i2c_init(i2c);
+- clk_disable_unprepare(i2c->clk);
++ clk_disable(i2c->clk);
+ i2c->suspended = 0;
+
+ return 0;
+diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c
+index fd780bbcd07e..f2a7f72f7aa6 100644
+--- a/drivers/iio/magnetometer/ak8975.c
++++ b/drivers/iio/magnetometer/ak8975.c
+@@ -732,7 +732,7 @@ static int ak8975_probe(struct i2c_client *client,
+ int eoc_gpio;
+ int err;
+ const char *name = NULL;
+- enum asahi_compass_chipset chipset;
++ enum asahi_compass_chipset chipset = AK_MAX_TYPE;
+
+ /* Grab and set up the supplied GPIO. */
+ if (client->dev.platform_data)
+diff --git a/drivers/infiniband/hw/mlx4/ah.c b/drivers/infiniband/hw/mlx4/ah.c
+index 33fdd50123f7..9fa27b0cda32 100644
+--- a/drivers/infiniband/hw/mlx4/ah.c
++++ b/drivers/infiniband/hw/mlx4/ah.c
+@@ -47,6 +47,7 @@ static struct ib_ah *create_ib_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr,
+
+ ah->av.ib.port_pd = cpu_to_be32(to_mpd(pd)->pdn | (ah_attr->port_num << 24));
+ ah->av.ib.g_slid = ah_attr->src_path_bits;
++ ah->av.ib.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 28);
+ if (ah_attr->ah_flags & IB_AH_GRH) {
+ ah->av.ib.g_slid |= 0x80;
+ ah->av.ib.gid_index = ah_attr->grh.sgid_index;
+@@ -64,7 +65,6 @@ static struct ib_ah *create_ib_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr,
+ !(1 << ah->av.ib.stat_rate & dev->caps.stat_rate_support))
+ --ah->av.ib.stat_rate;
+ }
+- ah->av.ib.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 28);
+
+ return &ah->ibah;
+ }
+diff --git a/drivers/input/misc/pmic8xxx-pwrkey.c b/drivers/input/misc/pmic8xxx-pwrkey.c
+index c4ca20e63221..b6d14bba6645 100644
+--- a/drivers/input/misc/pmic8xxx-pwrkey.c
++++ b/drivers/input/misc/pmic8xxx-pwrkey.c
+@@ -92,7 +92,8 @@ static int pmic8xxx_pwrkey_probe(struct platform_device *pdev)
+ if (of_property_read_u32(pdev->dev.of_node, "debounce", &kpd_delay))
+ kpd_delay = 15625;
+
+- if (kpd_delay > 62500 || kpd_delay == 0) {
++ /* Valid range of pwr key trigger delay is 1/64 sec to 2 seconds. */
++ if (kpd_delay > USEC_PER_SEC * 2 || kpd_delay < USEC_PER_SEC / 64) {
+ dev_err(&pdev->dev, "invalid power key trigger delay\n");
+ return -EINVAL;
+ }
+@@ -122,8 +123,8 @@ static int pmic8xxx_pwrkey_probe(struct platform_device *pdev)
+ pwr->name = "pmic8xxx_pwrkey";
+ pwr->phys = "pmic8xxx_pwrkey/input0";
+
+- delay = (kpd_delay << 10) / USEC_PER_SEC;
+- delay = 1 + ilog2(delay);
++ delay = (kpd_delay << 6) / USEC_PER_SEC;
++ delay = ilog2(delay);
+
+ err = regmap_read(regmap, PON_CNTL_1, &pon_cntl);
+ if (err < 0) {
+diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
+index 0f5b400706d7..c3c5d492cba0 100644
+--- a/drivers/input/mouse/elantech.c
++++ b/drivers/input/mouse/elantech.c
+@@ -1550,13 +1550,7 @@ static int elantech_set_properties(struct elantech_data *etd)
+ case 5:
+ etd->hw_version = 3;
+ break;
+- case 6:
+- case 7:
+- case 8:
+- case 9:
+- case 10:
+- case 13:
+- case 14:
++ case 6 ... 14:
+ etd->hw_version = 4;
+ break;
+ default:
+diff --git a/drivers/input/mouse/vmmouse.c b/drivers/input/mouse/vmmouse.c
+index a3f0f5a47490..0f586780ceb4 100644
+--- a/drivers/input/mouse/vmmouse.c
++++ b/drivers/input/mouse/vmmouse.c
+@@ -355,18 +355,11 @@ int vmmouse_detect(struct psmouse *psmouse, bool set_properties)
+ return -ENXIO;
+ }
+
+- if (!request_region(VMMOUSE_PROTO_PORT, 4, "vmmouse")) {
+- psmouse_dbg(psmouse, "VMMouse port in use.\n");
+- return -EBUSY;
+- }
+-
+ /* Check if the device is present */
+ response = ~VMMOUSE_PROTO_MAGIC;
+ VMMOUSE_CMD(GETVERSION, 0, version, response, dummy1, dummy2);
+- if (response != VMMOUSE_PROTO_MAGIC || version == 0xffffffffU) {
+- release_region(VMMOUSE_PROTO_PORT, 4);
++ if (response != VMMOUSE_PROTO_MAGIC || version == 0xffffffffU)
+ return -ENXIO;
+- }
+
+ if (set_properties) {
+ psmouse->vendor = VMMOUSE_VENDOR;
+@@ -374,8 +367,6 @@ int vmmouse_detect(struct psmouse *psmouse, bool set_properties)
+ psmouse->model = version;
+ }
+
+- release_region(VMMOUSE_PROTO_PORT, 4);
+-
+ return 0;
+ }
+
+@@ -394,7 +385,6 @@ static void vmmouse_disconnect(struct psmouse *psmouse)
+ psmouse_reset(psmouse);
+ input_unregister_device(priv->abs_dev);
+ kfree(priv);
+- release_region(VMMOUSE_PROTO_PORT, 4);
+ }
+
+ /**
+@@ -438,15 +428,10 @@ int vmmouse_init(struct psmouse *psmouse)
+ struct input_dev *rel_dev = psmouse->dev, *abs_dev;
+ int error;
+
+- if (!request_region(VMMOUSE_PROTO_PORT, 4, "vmmouse")) {
+- psmouse_dbg(psmouse, "VMMouse port in use.\n");
+- return -EBUSY;
+- }
+-
+ psmouse_reset(psmouse);
+ error = vmmouse_enable(psmouse);
+ if (error)
+- goto release_region;
++ return error;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ abs_dev = input_allocate_device();
+@@ -502,8 +487,5 @@ init_fail:
+ kfree(priv);
+ psmouse->private = NULL;
+
+-release_region:
+- release_region(VMMOUSE_PROTO_PORT, 4);
+-
+ return error;
+ }
+diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c
+index 2792ca397dd0..3ed0ce1e4dcb 100644
+--- a/drivers/input/touchscreen/wacom_w8001.c
++++ b/drivers/input/touchscreen/wacom_w8001.c
+@@ -27,7 +27,7 @@ MODULE_AUTHOR("Jaya Kumar <jayakumar.lkml@gmail.com>");
+ MODULE_DESCRIPTION(DRIVER_DESC);
+ MODULE_LICENSE("GPL");
+
+-#define W8001_MAX_LENGTH 11
++#define W8001_MAX_LENGTH 13
+ #define W8001_LEAD_MASK 0x80
+ #define W8001_LEAD_BYTE 0x80
+ #define W8001_TAB_MASK 0x40
+diff --git a/drivers/input/touchscreen/zforce_ts.c b/drivers/input/touchscreen/zforce_ts.c
+index 19880c7385e3..d618f67a9f48 100644
+--- a/drivers/input/touchscreen/zforce_ts.c
++++ b/drivers/input/touchscreen/zforce_ts.c
+@@ -359,8 +359,8 @@ static int zforce_touch_event(struct zforce_ts *ts, u8 *payload)
+ point.coord_x = point.coord_y = 0;
+ }
+
+- point.state = payload[9 * i + 5] & 0x03;
+- point.id = (payload[9 * i + 5] & 0xfc) >> 2;
++ point.state = payload[9 * i + 5] & 0x0f;
++ point.id = (payload[9 * i + 5] & 0xf0) >> 4;
+
+ /* determine touch major, minor and orientation */
+ point.area_major = max(payload[9 * i + 6],
+diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
+index 11ec9d2a27df..38f375516ae6 100644
+--- a/drivers/md/dm-snap.c
++++ b/drivers/md/dm-snap.c
+@@ -1099,6 +1099,7 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
+ int i;
+ int r = -EINVAL;
+ char *origin_path, *cow_path;
++ dev_t origin_dev, cow_dev;
+ unsigned args_used, num_flush_bios = 1;
+ fmode_t origin_mode = FMODE_READ;
+
+@@ -1129,11 +1130,19 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
+ ti->error = "Cannot get origin device";
+ goto bad_origin;
+ }
++ origin_dev = s->origin->bdev->bd_dev;
+
+ cow_path = argv[0];
+ argv++;
+ argc--;
+
++ cow_dev = dm_get_dev_t(cow_path);
++ if (cow_dev && cow_dev == origin_dev) {
++ ti->error = "COW device cannot be the same as origin device";
++ r = -EINVAL;
++ goto bad_cow;
++ }
++
+ r = dm_get_device(ti, cow_path, dm_table_get_mode(ti->table), &s->cow);
+ if (r) {
+ ti->error = "Cannot get COW device";
+diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
+index 16ba55ad7089..e411ccba0af6 100644
+--- a/drivers/md/dm-table.c
++++ b/drivers/md/dm-table.c
+@@ -365,6 +365,26 @@ static int upgrade_mode(struct dm_dev_internal *dd, fmode_t new_mode,
+ }
+
+ /*
++ * Convert the path to a device
++ */
++dev_t dm_get_dev_t(const char *path)
++{
++ dev_t uninitialized_var(dev);
++ struct block_device *bdev;
++
++ bdev = lookup_bdev(path);
++ if (IS_ERR(bdev))
++ dev = name_to_dev_t(path);
++ else {
++ dev = bdev->bd_dev;
++ bdput(bdev);
++ }
++
++ return dev;
++}
++EXPORT_SYMBOL_GPL(dm_get_dev_t);
++
++/*
+ * Add a device to the list, or just increment the usage count if
+ * it's already present.
+ */
+@@ -372,23 +392,15 @@ int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode,
+ struct dm_dev **result)
+ {
+ int r;
+- dev_t uninitialized_var(dev);
++ dev_t dev;
+ struct dm_dev_internal *dd;
+ struct dm_table *t = ti->table;
+- struct block_device *bdev;
+
+ BUG_ON(!t);
+
+- /* convert the path to a device */
+- bdev = lookup_bdev(path);
+- if (IS_ERR(bdev)) {
+- dev = name_to_dev_t(path);
+- if (!dev)
+- return -ENODEV;
+- } else {
+- dev = bdev->bd_dev;
+- bdput(bdev);
+- }
++ dev = dm_get_dev_t(path);
++ if (!dev)
++ return -ENODEV;
+
+ dd = find_device(&t->devices, dev);
+ if (!dd) {
+diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c
+index 8e6fe0200117..e14b1a19f4e6 100644
+--- a/drivers/media/platform/coda/coda-common.c
++++ b/drivers/media/platform/coda/coda-common.c
+@@ -2100,14 +2100,12 @@ static int coda_probe(struct platform_device *pdev)
+
+ pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
+
+- if (of_id) {
++ if (of_id)
+ dev->devtype = of_id->data;
+- } else if (pdev_id) {
++ else if (pdev_id)
+ dev->devtype = &coda_devdata[pdev_id->driver_data];
+- } else {
+- ret = -EINVAL;
+- goto err_v4l2_register;
+- }
++ else
++ return -EINVAL;
+
+ spin_lock_init(&dev->irqlock);
+ INIT_LIST_HEAD(&dev->instances);
+diff --git a/drivers/media/platform/vsp1/vsp1_sru.c b/drivers/media/platform/vsp1/vsp1_sru.c
+index 6310acab60e7..d41ae950d1a1 100644
+--- a/drivers/media/platform/vsp1/vsp1_sru.c
++++ b/drivers/media/platform/vsp1/vsp1_sru.c
+@@ -154,6 +154,7 @@ static int sru_s_stream(struct v4l2_subdev *subdev, int enable)
+ mutex_lock(sru->ctrls.lock);
+ ctrl0 |= vsp1_sru_read(sru, VI6_SRU_CTRL0)
+ & (VI6_SRU_CTRL0_PARAM0_MASK | VI6_SRU_CTRL0_PARAM1_MASK);
++ vsp1_sru_write(sru, VI6_SRU_CTRL0, ctrl0);
+ mutex_unlock(sru->ctrls.lock);
+
+ vsp1_sru_write(sru, VI6_SRU_CTRL1, VI6_SRU_CTRL1_PARAM5);
+diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
+index c94ea0d68746..2c51acce4b34 100644
+--- a/drivers/memory/omap-gpmc.c
++++ b/drivers/memory/omap-gpmc.c
+@@ -394,7 +394,7 @@ static void gpmc_cs_bool_timings(int cs, const struct gpmc_bool_timings *p)
+ gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG4,
+ GPMC_CONFIG4_OEEXTRADELAY, p->oe_extra_delay);
+ gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG4,
+- GPMC_CONFIG4_OEEXTRADELAY, p->we_extra_delay);
++ GPMC_CONFIG4_WEEXTRADELAY, p->we_extra_delay);
+ gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG6,
+ GPMC_CONFIG6_CYCLE2CYCLESAMECSEN,
+ p->cycle2cyclesamecsen);
+diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
+index 006242c8bca0..b3c10b7dae1f 100644
+--- a/drivers/misc/Kconfig
++++ b/drivers/misc/Kconfig
+@@ -429,7 +429,7 @@ config ARM_CHARLCD
+ still useful.
+
+ config BMP085
+- bool
++ tristate
+ depends on SYSFS
+
+ config BMP085_I2C
+diff --git a/drivers/misc/ad525x_dpot.c b/drivers/misc/ad525x_dpot.c
+index 15e88078ba1e..f1a0b99f5a9a 100644
+--- a/drivers/misc/ad525x_dpot.c
++++ b/drivers/misc/ad525x_dpot.c
+@@ -216,7 +216,7 @@ static s32 dpot_read_i2c(struct dpot_data *dpot, u8 reg)
+ */
+ value = swab16(value);
+
+- if (dpot->uid == DPOT_UID(AD5271_ID))
++ if (dpot->uid == DPOT_UID(AD5274_ID))
+ value = value >> 2;
+ return value;
+ default:
+diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
+index 1c73ba6efdbd..f109aeed9883 100644
+--- a/drivers/mtd/ubi/eba.c
++++ b/drivers/mtd/ubi/eba.c
+@@ -575,6 +575,7 @@ static int recover_peb(struct ubi_device *ubi, int pnum, int vol_id, int lnum,
+ int err, idx = vol_id2idx(ubi, vol_id), new_pnum, data_size, tries = 0;
+ struct ubi_volume *vol = ubi->volumes[idx];
+ struct ubi_vid_hdr *vid_hdr;
++ uint32_t crc;
+
+ vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS);
+ if (!vid_hdr)
+@@ -599,14 +600,8 @@ retry:
+ goto out_put;
+ }
+
+- vid_hdr->sqnum = cpu_to_be64(ubi_next_sqnum(ubi));
+- err = ubi_io_write_vid_hdr(ubi, new_pnum, vid_hdr);
+- if (err) {
+- up_read(&ubi->fm_eba_sem);
+- goto write_error;
+- }
++ ubi_assert(vid_hdr->vol_type == UBI_VID_DYNAMIC);
+
+- data_size = offset + len;
+ mutex_lock(&ubi->buf_mutex);
+ memset(ubi->peb_buf + offset, 0xFF, len);
+
+@@ -621,6 +616,19 @@ retry:
+
+ memcpy(ubi->peb_buf + offset, buf, len);
+
++ data_size = offset + len;
++ crc = crc32(UBI_CRC32_INIT, ubi->peb_buf, data_size);
++ vid_hdr->sqnum = cpu_to_be64(ubi_next_sqnum(ubi));
++ vid_hdr->copy_flag = 1;
++ vid_hdr->data_size = cpu_to_be32(data_size);
++ vid_hdr->data_crc = cpu_to_be32(crc);
++ err = ubi_io_write_vid_hdr(ubi, new_pnum, vid_hdr);
++ if (err) {
++ mutex_unlock(&ubi->buf_mutex);
++ up_read(&ubi->fm_eba_sem);
++ goto write_error;
++ }
++
+ err = ubi_io_write_data(ubi, ubi->peb_buf, new_pnum, 0, data_size);
+ if (err) {
+ mutex_unlock(&ubi->buf_mutex);
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index bd744e31c434..9ba92e23e67f 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -3246,6 +3246,30 @@ static int bond_close(struct net_device *bond_dev)
+ return 0;
+ }
+
++/* fold stats, assuming all rtnl_link_stats64 fields are u64, but
++ * that some drivers can provide 32bit values only.
++ */
++static void bond_fold_stats(struct rtnl_link_stats64 *_res,
++ const struct rtnl_link_stats64 *_new,
++ const struct rtnl_link_stats64 *_old)
++{
++ const u64 *new = (const u64 *)_new;
++ const u64 *old = (const u64 *)_old;
++ u64 *res = (u64 *)_res;
++ int i;
++
++ for (i = 0; i < sizeof(*_res) / sizeof(u64); i++) {
++ u64 nv = new[i];
++ u64 ov = old[i];
++
++ /* detects if this particular field is 32bit only */
++ if (((nv | ov) >> 32) == 0)
++ res[i] += (u32)nv - (u32)ov;
++ else
++ res[i] += nv - ov;
++ }
++}
++
+ static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev,
+ struct rtnl_link_stats64 *stats)
+ {
+@@ -3254,43 +3278,23 @@ static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev,
+ struct list_head *iter;
+ struct slave *slave;
+
++ spin_lock(&bond->stats_lock);
+ memcpy(stats, &bond->bond_stats, sizeof(*stats));
+
+- bond_for_each_slave(bond, slave, iter) {
+- const struct rtnl_link_stats64 *sstats =
++ rcu_read_lock();
++ bond_for_each_slave_rcu(bond, slave, iter) {
++ const struct rtnl_link_stats64 *new =
+ dev_get_stats(slave->dev, &temp);
+- struct rtnl_link_stats64 *pstats = &slave->slave_stats;
+-
+- stats->rx_packets += sstats->rx_packets - pstats->rx_packets;
+- stats->rx_bytes += sstats->rx_bytes - pstats->rx_bytes;
+- stats->rx_errors += sstats->rx_errors - pstats->rx_errors;
+- stats->rx_dropped += sstats->rx_dropped - pstats->rx_dropped;
+-
+- stats->tx_packets += sstats->tx_packets - pstats->tx_packets;;
+- stats->tx_bytes += sstats->tx_bytes - pstats->tx_bytes;
+- stats->tx_errors += sstats->tx_errors - pstats->tx_errors;
+- stats->tx_dropped += sstats->tx_dropped - pstats->tx_dropped;
+-
+- stats->multicast += sstats->multicast - pstats->multicast;
+- stats->collisions += sstats->collisions - pstats->collisions;
+-
+- stats->rx_length_errors += sstats->rx_length_errors - pstats->rx_length_errors;
+- stats->rx_over_errors += sstats->rx_over_errors - pstats->rx_over_errors;
+- stats->rx_crc_errors += sstats->rx_crc_errors - pstats->rx_crc_errors;
+- stats->rx_frame_errors += sstats->rx_frame_errors - pstats->rx_frame_errors;
+- stats->rx_fifo_errors += sstats->rx_fifo_errors - pstats->rx_fifo_errors;
+- stats->rx_missed_errors += sstats->rx_missed_errors - pstats->rx_missed_errors;
+-
+- stats->tx_aborted_errors += sstats->tx_aborted_errors - pstats->tx_aborted_errors;
+- stats->tx_carrier_errors += sstats->tx_carrier_errors - pstats->tx_carrier_errors;
+- stats->tx_fifo_errors += sstats->tx_fifo_errors - pstats->tx_fifo_errors;
+- stats->tx_heartbeat_errors += sstats->tx_heartbeat_errors - pstats->tx_heartbeat_errors;
+- stats->tx_window_errors += sstats->tx_window_errors - pstats->tx_window_errors;
++
++ bond_fold_stats(stats, new, &slave->slave_stats);
+
+ /* save off the slave stats for the next run */
+- memcpy(pstats, sstats, sizeof(*sstats));
++ memcpy(&slave->slave_stats, new, sizeof(*new));
+ }
++ rcu_read_unlock();
++
+ memcpy(&bond->bond_stats, stats, sizeof(*stats));
++ spin_unlock(&bond->stats_lock);
+
+ return stats;
+ }
+@@ -4102,6 +4106,7 @@ void bond_setup(struct net_device *bond_dev)
+ struct bonding *bond = netdev_priv(bond_dev);
+
+ spin_lock_init(&bond->mode_lock);
++ spin_lock_init(&bond->stats_lock);
+ bond->params = bonding_defaults;
+
+ /* Initialize pointers */
+diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
+index f4e40aa4d2a2..35233aa5a88a 100644
+--- a/drivers/net/can/at91_can.c
++++ b/drivers/net/can/at91_can.c
+@@ -733,9 +733,10 @@ static int at91_poll_rx(struct net_device *dev, int quota)
+
+ /* upper group completed, look again in lower */
+ if (priv->rx_next > get_mb_rx_low_last(priv) &&
+- quota > 0 && mb > get_mb_rx_last(priv)) {
++ mb > get_mb_rx_last(priv)) {
+ priv->rx_next = get_mb_rx_first(priv);
+- goto again;
++ if (quota > 0)
++ goto again;
+ }
+
+ return received;
+diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
+index 5d214d135332..c076414103d2 100644
+--- a/drivers/net/can/c_can/c_can.c
++++ b/drivers/net/can/c_can/c_can.c
+@@ -332,9 +332,23 @@ static void c_can_setup_tx_object(struct net_device *dev, int iface,
+
+ priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), ctrl);
+
+- for (i = 0; i < frame->can_dlc; i += 2) {
+- priv->write_reg(priv, C_CAN_IFACE(DATA1_REG, iface) + i / 2,
+- frame->data[i] | (frame->data[i + 1] << 8));
++ if (priv->type == BOSCH_D_CAN) {
++ u32 data = 0, dreg = C_CAN_IFACE(DATA1_REG, iface);
++
++ for (i = 0; i < frame->can_dlc; i += 4, dreg += 2) {
++ data = (u32)frame->data[i];
++ data |= (u32)frame->data[i + 1] << 8;
++ data |= (u32)frame->data[i + 2] << 16;
++ data |= (u32)frame->data[i + 3] << 24;
++ priv->write_reg32(priv, dreg, data);
++ }
++ } else {
++ for (i = 0; i < frame->can_dlc; i += 2) {
++ priv->write_reg(priv,
++ C_CAN_IFACE(DATA1_REG, iface) + i / 2,
++ frame->data[i] |
++ (frame->data[i + 1] << 8));
++ }
+ }
+ }
+
+@@ -402,10 +416,20 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, u32 ctrl)
+ } else {
+ int i, dreg = C_CAN_IFACE(DATA1_REG, iface);
+
+- for (i = 0; i < frame->can_dlc; i += 2, dreg ++) {
+- data = priv->read_reg(priv, dreg);
+- frame->data[i] = data;
+- frame->data[i + 1] = data >> 8;
++ if (priv->type == BOSCH_D_CAN) {
++ for (i = 0; i < frame->can_dlc; i += 4, dreg += 2) {
++ data = priv->read_reg32(priv, dreg);
++ frame->data[i] = data;
++ frame->data[i + 1] = data >> 8;
++ frame->data[i + 2] = data >> 16;
++ frame->data[i + 3] = data >> 24;
++ }
++ } else {
++ for (i = 0; i < frame->can_dlc; i += 2, dreg++) {
++ data = priv->read_reg(priv, dreg);
++ frame->data[i] = data;
++ frame->data[i + 1] = data >> 8;
++ }
+ }
+ }
+
+diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
+index 910c12e2638e..ad535a854e5c 100644
+--- a/drivers/net/can/dev.c
++++ b/drivers/net/can/dev.c
+@@ -798,6 +798,9 @@ static int can_validate(struct nlattr *tb[], struct nlattr *data[])
+ * - control mode with CAN_CTRLMODE_FD set
+ */
+
++ if (!data)
++ return 0;
++
+ if (data[IFLA_CAN_CTRLMODE]) {
+ struct can_ctrlmode *cm = nla_data(data[IFLA_CAN_CTRLMODE]);
+
+@@ -1008,6 +1011,11 @@ static int can_newlink(struct net *src_net, struct net_device *dev,
+ return -EOPNOTSUPP;
+ }
+
++static void can_dellink(struct net_device *dev, struct list_head *head)
++{
++ return;
++}
++
+ static struct rtnl_link_ops can_link_ops __read_mostly = {
+ .kind = "can",
+ .maxtype = IFLA_CAN_MAX,
+@@ -1016,6 +1024,7 @@ static struct rtnl_link_ops can_link_ops __read_mostly = {
+ .validate = can_validate,
+ .newlink = can_newlink,
+ .changelink = can_changelink,
++ .dellink = can_dellink,
+ .get_size = can_get_size,
+ .fill_info = can_fill_info,
+ .get_xstats_size = can_get_xstats_size,
+diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c
+index 46a535318c7a..972ee645fac6 100644
+--- a/drivers/net/ethernet/atheros/atlx/atl2.c
++++ b/drivers/net/ethernet/atheros/atlx/atl2.c
+@@ -1412,7 +1412,7 @@ static int atl2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+
+ err = -EIO;
+
+- netdev->hw_features = NETIF_F_SG | NETIF_F_HW_VLAN_CTAG_RX;
++ netdev->hw_features = NETIF_F_HW_VLAN_CTAG_RX;
+ netdev->features |= (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX);
+
+ /* Init PHY as early as possible due to power saving issue */
+diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+index 6043734ea613..a9fcac044e9e 100644
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+@@ -1048,7 +1048,7 @@ static unsigned int __bcmgenet_tx_reclaim(struct net_device *dev,
+ dev->stats.tx_bytes += tx_cb_ptr->skb->len;
+ dma_unmap_single(&dev->dev,
+ dma_unmap_addr(tx_cb_ptr, dma_addr),
+- tx_cb_ptr->skb->len,
++ dma_unmap_len(tx_cb_ptr, dma_len),
+ DMA_TO_DEVICE);
+ bcmgenet_free_cb(tx_cb_ptr);
+ } else if (dma_unmap_addr(tx_cb_ptr, dma_addr)) {
+@@ -1159,7 +1159,7 @@ static int bcmgenet_xmit_single(struct net_device *dev,
+ }
+
+ dma_unmap_addr_set(tx_cb_ptr, dma_addr, mapping);
+- dma_unmap_len_set(tx_cb_ptr, dma_len, skb->len);
++ dma_unmap_len_set(tx_cb_ptr, dma_len, skb_len);
+ length_status = (skb_len << DMA_BUFLENGTH_SHIFT) | dma_desc_flags |
+ (priv->hw_params->qtag_mask << DMA_TX_QTAG_SHIFT) |
+ DMA_TX_APPEND_CRC;
+diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
+index 570390b5cd42..67aec18dd76c 100644
+--- a/drivers/net/ethernet/freescale/fec_main.c
++++ b/drivers/net/ethernet/freescale/fec_main.c
+@@ -1546,9 +1546,15 @@ fec_enet_rx(struct net_device *ndev, int budget)
+ struct fec_enet_private *fep = netdev_priv(ndev);
+
+ for_each_set_bit(queue_id, &fep->work_rx, FEC_ENET_MAX_RX_QS) {
+- clear_bit(queue_id, &fep->work_rx);
+- pkt_received += fec_enet_rx_queue(ndev,
++ int ret;
++
++ ret = fec_enet_rx_queue(ndev,
+ budget - pkt_received, queue_id);
++
++ if (ret < budget - pkt_received)
++ clear_bit(queue_id, &fep->work_rx);
++
++ pkt_received += ret;
+ }
+ return pkt_received;
+ }
+diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c
+index 6e9a792097d3..46e8d5b12c1a 100644
+--- a/drivers/net/ethernet/jme.c
++++ b/drivers/net/ethernet/jme.c
+@@ -270,11 +270,17 @@ jme_reset_mac_processor(struct jme_adapter *jme)
+ }
+
+ static inline void
+-jme_clear_pm(struct jme_adapter *jme)
++jme_clear_pm_enable_wol(struct jme_adapter *jme)
+ {
+ jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
+ }
+
++static inline void
++jme_clear_pm_disable_wol(struct jme_adapter *jme)
++{
++ jwrite32(jme, JME_PMCS, PMCS_STMASK);
++}
++
+ static int
+ jme_reload_eeprom(struct jme_adapter *jme)
+ {
+@@ -1857,7 +1863,7 @@ jme_open(struct net_device *netdev)
+ struct jme_adapter *jme = netdev_priv(netdev);
+ int rc;
+
+- jme_clear_pm(jme);
++ jme_clear_pm_disable_wol(jme);
+ JME_NAPI_ENABLE(jme);
+
+ tasklet_init(&jme->linkch_task, jme_link_change_tasklet,
+@@ -1929,11 +1935,11 @@ jme_wait_link(struct jme_adapter *jme)
+ static void
+ jme_powersave_phy(struct jme_adapter *jme)
+ {
+- if (jme->reg_pmcs) {
++ if (jme->reg_pmcs && device_may_wakeup(&jme->pdev->dev)) {
+ jme_set_100m_half(jme);
+ if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
+ jme_wait_link(jme);
+- jme_clear_pm(jme);
++ jme_clear_pm_enable_wol(jme);
+ } else {
+ jme_phy_off(jme);
+ }
+@@ -2650,9 +2656,6 @@ jme_set_wol(struct net_device *netdev,
+ if (wol->wolopts & WAKE_MAGIC)
+ jme->reg_pmcs |= PMCS_MFEN;
+
+- jwrite32(jme, JME_PMCS, jme->reg_pmcs);
+- device_set_wakeup_enable(&jme->pdev->dev, !!(jme->reg_pmcs));
+-
+ return 0;
+ }
+
+@@ -3176,8 +3179,8 @@ jme_init_one(struct pci_dev *pdev,
+ jme->mii_if.mdio_read = jme_mdio_read;
+ jme->mii_if.mdio_write = jme_mdio_write;
+
+- jme_clear_pm(jme);
+- device_set_wakeup_enable(&pdev->dev, true);
++ jme_clear_pm_disable_wol(jme);
++ device_init_wakeup(&pdev->dev, true);
+
+ jme_set_phyfifo_5level(jme);
+ jme->pcirev = pdev->revision;
+@@ -3308,7 +3311,7 @@ jme_resume(struct device *dev)
+ if (!netif_running(netdev))
+ return 0;
+
+- jme_clear_pm(jme);
++ jme_clear_pm_disable_wol(jme);
+ jme_phy_on(jme);
+ if (test_bit(JME_FLAG_SSET, &jme->flags))
+ jme_set_settings(netdev, &jme->old_ecmd);
+@@ -3316,13 +3319,14 @@ jme_resume(struct device *dev)
+ jme_reset_phy_processor(jme);
+ jme_phy_calibration(jme);
+ jme_phy_setEA(jme);
+- jme_start_irq(jme);
+ netif_device_attach(netdev);
+
+ atomic_inc(&jme->link_changing);
+
+ jme_reset_link(jme);
+
++ jme_start_irq(jme);
++
+ return 0;
+ }
+
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+index 80aac20104de..f6095d2b77de 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+@@ -710,7 +710,7 @@ static int get_fixed_ipv6_csum(__wsum hw_checksum, struct sk_buff *skb,
+
+ if (ipv6h->nexthdr == IPPROTO_FRAGMENT || ipv6h->nexthdr == IPPROTO_HOPOPTS)
+ return -1;
+- hw_checksum = csum_add(hw_checksum, (__force __wsum)(ipv6h->nexthdr << 8));
++ hw_checksum = csum_add(hw_checksum, (__force __wsum)htons(ipv6h->nexthdr));
+
+ csum_pseudo_hdr = csum_partial(&ipv6h->saddr,
+ sizeof(ipv6h->saddr) + sizeof(ipv6h->daddr), 0);
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+index c10d98f6ad96..a1b4301f719a 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+@@ -400,7 +400,6 @@ static bool mlx4_en_process_tx_cq(struct net_device *dev,
+ u32 packets = 0;
+ u32 bytes = 0;
+ int factor = priv->cqe_factor;
+- u64 timestamp = 0;
+ int done = 0;
+ int budget = priv->tx_work_limit;
+ u32 last_nr_txbb;
+@@ -440,9 +439,12 @@ static bool mlx4_en_process_tx_cq(struct net_device *dev,
+ new_index = be16_to_cpu(cqe->wqe_index) & size_mask;
+
+ do {
++ u64 timestamp = 0;
++
+ txbbs_skipped += last_nr_txbb;
+ ring_index = (ring_index + last_nr_txbb) & size_mask;
+- if (ring->tx_info[ring_index].ts_requested)
++
++ if (unlikely(ring->tx_info[ring_index].ts_requested))
+ timestamp = mlx4_en_get_cqe_ts(cqe);
+
+ /* free next descriptor */
+diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+index bafe2180cf0c..e662ab39499e 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
++++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+@@ -2960,7 +2960,7 @@ static int verify_qp_parameters(struct mlx4_dev *dev,
+ case QP_TRANS_RTS2RTS:
+ case QP_TRANS_SQD2SQD:
+ case QP_TRANS_SQD2RTS:
+- if (slave != mlx4_master_func_num(dev))
++ if (slave != mlx4_master_func_num(dev)) {
+ if (optpar & MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH) {
+ port = (qp_ctx->pri_path.sched_queue >> 6 & 1) + 1;
+ if (dev->caps.port_mask[port] != MLX4_PORT_TYPE_IB)
+@@ -2979,6 +2979,7 @@ static int verify_qp_parameters(struct mlx4_dev *dev,
+ if (qp_ctx->alt_path.mgid_index >= num_gids)
+ return -EINVAL;
+ }
++ }
+ break;
+ default:
+ break;
+diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+index f221126a5c4e..d0992825c47c 100644
+--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
++++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+@@ -567,6 +567,7 @@ struct qlcnic_adapter_stats {
+ u64 tx_dma_map_error;
+ u64 spurious_intr;
+ u64 mac_filter_limit_overrun;
++ u64 mbx_spurious_intr;
+ };
+
+ /*
+@@ -1099,7 +1100,7 @@ struct qlcnic_mailbox {
+ unsigned long status;
+ spinlock_t queue_lock; /* Mailbox queue lock */
+ spinlock_t aen_lock; /* Mailbox response/AEN lock */
+- atomic_t rsp_status;
++ u32 rsp_status;
+ u32 num_cmds;
+ };
+
+diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+index 840bf36b5e9d..dd618d7ed257 100644
+--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
++++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+@@ -489,7 +489,7 @@ irqreturn_t qlcnic_83xx_clear_legacy_intr(struct qlcnic_adapter *adapter)
+
+ static inline void qlcnic_83xx_notify_mbx_response(struct qlcnic_mailbox *mbx)
+ {
+- atomic_set(&mbx->rsp_status, QLC_83XX_MBX_RESPONSE_ARRIVED);
++ mbx->rsp_status = QLC_83XX_MBX_RESPONSE_ARRIVED;
+ complete(&mbx->completion);
+ }
+
+@@ -508,7 +508,7 @@ static void qlcnic_83xx_poll_process_aen(struct qlcnic_adapter *adapter)
+ if (event & QLCNIC_MBX_ASYNC_EVENT) {
+ __qlcnic_83xx_process_aen(adapter);
+ } else {
+- if (atomic_read(&mbx->rsp_status) != rsp_status)
++ if (mbx->rsp_status != rsp_status)
+ qlcnic_83xx_notify_mbx_response(mbx);
+ }
+ out:
+@@ -1023,7 +1023,7 @@ static void qlcnic_83xx_process_aen(struct qlcnic_adapter *adapter)
+ if (event & QLCNIC_MBX_ASYNC_EVENT) {
+ __qlcnic_83xx_process_aen(adapter);
+ } else {
+- if (atomic_read(&mbx->rsp_status) != rsp_status)
++ if (mbx->rsp_status != rsp_status)
+ qlcnic_83xx_notify_mbx_response(mbx);
+ }
+ }
+@@ -2338,9 +2338,9 @@ static void qlcnic_83xx_handle_link_aen(struct qlcnic_adapter *adapter,
+
+ static irqreturn_t qlcnic_83xx_handle_aen(int irq, void *data)
+ {
++ u32 mask, resp, event, rsp_status = QLC_83XX_MBX_RESPONSE_ARRIVED;
+ struct qlcnic_adapter *adapter = data;
+ struct qlcnic_mailbox *mbx;
+- u32 mask, resp, event;
+ unsigned long flags;
+
+ mbx = adapter->ahw->mailbox;
+@@ -2350,10 +2350,14 @@ static irqreturn_t qlcnic_83xx_handle_aen(int irq, void *data)
+ goto out;
+
+ event = readl(QLCNIC_MBX_FW(adapter->ahw, 0));
+- if (event & QLCNIC_MBX_ASYNC_EVENT)
++ if (event & QLCNIC_MBX_ASYNC_EVENT) {
+ __qlcnic_83xx_process_aen(adapter);
+- else
+- qlcnic_83xx_notify_mbx_response(mbx);
++ } else {
++ if (mbx->rsp_status != rsp_status)
++ qlcnic_83xx_notify_mbx_response(mbx);
++ else
++ adapter->stats.mbx_spurious_intr++;
++ }
+
+ out:
+ mask = QLCRDX(adapter->ahw, QLCNIC_DEF_INT_MASK);
+@@ -4025,10 +4029,10 @@ static void qlcnic_83xx_mailbox_worker(struct work_struct *work)
+ struct qlcnic_adapter *adapter = mbx->adapter;
+ struct qlcnic_mbx_ops *mbx_ops = mbx->ops;
+ struct device *dev = &adapter->pdev->dev;
+- atomic_t *rsp_status = &mbx->rsp_status;
+ struct list_head *head = &mbx->cmd_q;
+ struct qlcnic_hardware_context *ahw;
+ struct qlcnic_cmd_args *cmd = NULL;
++ unsigned long flags;
+
+ ahw = adapter->ahw;
+
+@@ -4038,7 +4042,9 @@ static void qlcnic_83xx_mailbox_worker(struct work_struct *work)
+ return;
+ }
+
+- atomic_set(rsp_status, QLC_83XX_MBX_RESPONSE_WAIT);
++ spin_lock_irqsave(&mbx->aen_lock, flags);
++ mbx->rsp_status = QLC_83XX_MBX_RESPONSE_WAIT;
++ spin_unlock_irqrestore(&mbx->aen_lock, flags);
+
+ spin_lock(&mbx->queue_lock);
+
+diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
+index 494e8105adee..0a2318cad34d 100644
+--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
++++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
+@@ -59,7 +59,8 @@ static const struct qlcnic_stats qlcnic_gstrings_stats[] = {
+ QLC_OFF(stats.mac_filter_limit_overrun)},
+ {"spurious intr", QLC_SIZEOF(stats.spurious_intr),
+ QLC_OFF(stats.spurious_intr)},
+-
++ {"mbx spurious intr", QLC_SIZEOF(stats.mbx_spurious_intr),
++ QLC_OFF(stats.mbx_spurious_intr)},
+ };
+
+ static const char qlcnic_device_gstrings_stats[][ETH_GSTRING_LEN] = {
+diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
+index 25800a1dedcb..b915de060a42 100644
+--- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
++++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
+@@ -1648,7 +1648,18 @@ static void ql_process_mac_rx_skb(struct ql_adapter *qdev,
+ return;
+ }
+ skb_reserve(new_skb, NET_IP_ALIGN);
++
++ pci_dma_sync_single_for_cpu(qdev->pdev,
++ dma_unmap_addr(sbq_desc, mapaddr),
++ dma_unmap_len(sbq_desc, maplen),
++ PCI_DMA_FROMDEVICE);
++
+ memcpy(skb_put(new_skb, length), skb->data, length);
++
++ pci_dma_sync_single_for_device(qdev->pdev,
++ dma_unmap_addr(sbq_desc, mapaddr),
++ dma_unmap_len(sbq_desc, maplen),
++ PCI_DMA_FROMDEVICE);
+ skb = new_skb;
+
+ /* Frame error, so drop the packet. */
+diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
+index 97e4df9bf407..cba41860167c 100644
+--- a/drivers/net/ethernet/qualcomm/qca_spi.c
++++ b/drivers/net/ethernet/qualcomm/qca_spi.c
+@@ -811,7 +811,7 @@ qcaspi_netdev_setup(struct net_device *dev)
+ dev->netdev_ops = &qcaspi_netdev_ops;
+ qcaspi_set_ethtool_ops(dev);
+ dev->watchdog_timeo = QCASPI_TX_TIMEOUT;
+- dev->flags = IFF_MULTICAST;
++ dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+ dev->tx_queue_len = 100;
+
+ qca = netdev_priv(dev);
+diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
+index 13463c4acc86..c93a458f96f7 100644
+--- a/drivers/net/ethernet/renesas/sh_eth.c
++++ b/drivers/net/ethernet/renesas/sh_eth.c
+@@ -1148,8 +1148,8 @@ static void sh_eth_ring_format(struct net_device *ndev)
+
+ /* RX descriptor */
+ rxdesc = &mdp->rx_ring[i];
+- /* The size of the buffer is a multiple of 16 bytes. */
+- rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
++ /* The size of the buffer is a multiple of 32 bytes. */
++ rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 32);
+ dma_addr = dma_map_single(&ndev->dev, skb->data,
+ rxdesc->buffer_length,
+ DMA_FROM_DEVICE);
+@@ -1173,7 +1173,8 @@ static void sh_eth_ring_format(struct net_device *ndev)
+ mdp->dirty_rx = (u32) (i - mdp->num_rx_ring);
+
+ /* Mark the last entry as wrapping the ring. */
+- rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL);
++ if (rxdesc)
++ rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL);
+
+ memset(mdp->tx_ring, 0, tx_ringsize);
+
+@@ -1506,7 +1507,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
+ if (mdp->cd->rpadir)
+ skb_reserve(skb, NET_IP_ALIGN);
+ dma_unmap_single(&ndev->dev, rxdesc->addr,
+- ALIGN(mdp->rx_buf_sz, 16),
++ ALIGN(mdp->rx_buf_sz, 32),
+ DMA_FROM_DEVICE);
+ skb_put(skb, pkt_len);
+ skb->protocol = eth_type_trans(skb, ndev);
+@@ -1524,8 +1525,8 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
+ for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
+ entry = mdp->dirty_rx % mdp->num_rx_ring;
+ rxdesc = &mdp->rx_ring[entry];
+- /* The size of the buffer is 16 byte boundary. */
+- rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
++ /* The size of the buffer is 32 byte boundary. */
++ rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 32);
+
+ if (mdp->rx_skbuff[entry] == NULL) {
+ skb = netdev_alloc_skb(ndev, skbuff_size);
+diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
+index feca46efa12f..c642e201a45e 100644
+--- a/drivers/net/ethernet/sfc/ef10.c
++++ b/drivers/net/ethernet/sfc/ef10.c
+@@ -452,6 +452,17 @@ fail:
+ return rc;
+ }
+
++static void efx_ef10_forget_old_piobufs(struct efx_nic *efx)
++{
++ struct efx_channel *channel;
++ struct efx_tx_queue *tx_queue;
++
++ /* All our existing PIO buffers went away */
++ efx_for_each_channel(channel, efx)
++ efx_for_each_channel_tx_queue(tx_queue, channel)
++ tx_queue->piobuf = NULL;
++}
++
+ #else /* !EFX_USE_PIO */
+
+ static int efx_ef10_alloc_piobufs(struct efx_nic *efx, unsigned int n)
+@@ -468,6 +479,10 @@ static void efx_ef10_free_piobufs(struct efx_nic *efx)
+ {
+ }
+
++static void efx_ef10_forget_old_piobufs(struct efx_nic *efx)
++{
++}
++
+ #endif /* EFX_USE_PIO */
+
+ static void efx_ef10_remove(struct efx_nic *efx)
+@@ -699,6 +714,7 @@ static void efx_ef10_reset_mc_allocations(struct efx_nic *efx)
+ nic_data->must_realloc_vis = true;
+ nic_data->must_restore_filters = true;
+ nic_data->must_restore_piobufs = true;
++ efx_ef10_forget_old_piobufs(efx);
+ nic_data->rx_rss_context = EFX_EF10_RSS_CONTEXT_INVALID;
+ }
+
+diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
+index 4dba5fbc735e..2b212f3e140c 100644
+--- a/drivers/net/macvtap.c
++++ b/drivers/net/macvtap.c
+@@ -710,6 +710,8 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
+ macvtap16_to_cpu(q, vnet_hdr.hdr_len) : GOODCOPY_LEN;
+ if (copylen > good_linear)
+ copylen = good_linear;
++ else if (copylen < ETH_HLEN)
++ copylen = ETH_HLEN;
+ linear = copylen;
+ i = *from;
+ iov_iter_advance(&i, copylen);
+@@ -719,10 +721,11 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
+
+ if (!zerocopy) {
+ copylen = len;
+- if (macvtap16_to_cpu(q, vnet_hdr.hdr_len) > good_linear)
++ linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len);
++ if (linear > good_linear)
+ linear = good_linear;
+- else
+- linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len);
++ else if (linear < ETH_HLEN)
++ linear = ETH_HLEN;
+ }
+
+ skb = macvtap_alloc_skb(&q->sk, MACVTAP_RESERVE, copylen,
+diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
+index cfe49a07c7c1..51ba895f0522 100644
+--- a/drivers/net/ppp/ppp_generic.c
++++ b/drivers/net/ppp/ppp_generic.c
+@@ -563,7 +563,7 @@ static int get_filter(void __user *arg, struct sock_filter **p)
+
+ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ {
+- struct ppp_file *pf = file->private_data;
++ struct ppp_file *pf;
+ struct ppp *ppp;
+ int err = -EFAULT, val, val2, i;
+ struct ppp_idle idle;
+@@ -573,9 +573,14 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ void __user *argp = (void __user *)arg;
+ int __user *p = argp;
+
+- if (!pf)
+- return ppp_unattached_ioctl(current->nsproxy->net_ns,
+- pf, file, cmd, arg);
++ mutex_lock(&ppp_mutex);
++
++ pf = file->private_data;
++ if (!pf) {
++ err = ppp_unattached_ioctl(current->nsproxy->net_ns,
++ pf, file, cmd, arg);
++ goto out;
++ }
+
+ if (cmd == PPPIOCDETACH) {
+ /*
+@@ -590,7 +595,6 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ * this fd and reopening /dev/ppp.
+ */
+ err = -EINVAL;
+- mutex_lock(&ppp_mutex);
+ if (pf->kind == INTERFACE) {
+ ppp = PF_TO_PPP(pf);
+ if (file == ppp->owner)
+@@ -602,15 +606,13 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ } else
+ pr_warn("PPPIOCDETACH file->f_count=%ld\n",
+ atomic_long_read(&file->f_count));
+- mutex_unlock(&ppp_mutex);
+- return err;
++ goto out;
+ }
+
+ if (pf->kind == CHANNEL) {
+ struct channel *pch;
+ struct ppp_channel *chan;
+
+- mutex_lock(&ppp_mutex);
+ pch = PF_TO_CHANNEL(pf);
+
+ switch (cmd) {
+@@ -632,17 +634,16 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ err = chan->ops->ioctl(chan, cmd, arg);
+ up_read(&pch->chan_sem);
+ }
+- mutex_unlock(&ppp_mutex);
+- return err;
++ goto out;
+ }
+
+ if (pf->kind != INTERFACE) {
+ /* can't happen */
+ pr_err("PPP: not interface or channel??\n");
+- return -EINVAL;
++ err = -EINVAL;
++ goto out;
+ }
+
+- mutex_lock(&ppp_mutex);
+ ppp = PF_TO_PPP(pf);
+ switch (cmd) {
+ case PPPIOCSMRU:
+@@ -817,7 +818,10 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ default:
+ err = -ENOTTY;
+ }
++
++out:
+ mutex_unlock(&ppp_mutex);
++
+ return err;
+ }
+
+@@ -830,7 +834,6 @@ static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,
+ struct ppp_net *pn;
+ int __user *p = (int __user *)arg;
+
+- mutex_lock(&ppp_mutex);
+ switch (cmd) {
+ case PPPIOCNEWUNIT:
+ /* Create a new ppp unit */
+@@ -881,7 +884,7 @@ static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,
+ default:
+ err = -ENOTTY;
+ }
+- mutex_unlock(&ppp_mutex);
++
+ return err;
+ }
+
+@@ -2244,7 +2247,7 @@ int ppp_register_net_channel(struct net *net, struct ppp_channel *chan)
+
+ pch->ppp = NULL;
+ pch->chan = chan;
+- pch->chan_net = net;
++ pch->chan_net = get_net(net);
+ chan->ppp = pch;
+ init_ppp_file(&pch->file, CHANNEL);
+ pch->file.hdrlen = chan->hdrlen;
+@@ -2341,6 +2344,8 @@ ppp_unregister_channel(struct ppp_channel *chan)
+ spin_lock_bh(&pn->all_channels_lock);
+ list_del(&pch->list);
+ spin_unlock_bh(&pn->all_channels_lock);
++ put_net(pch->chan_net);
++ pch->chan_net = NULL;
+
+ pch->file.dead = 1;
+ wake_up_interruptible(&pch->file.rwait);
+diff --git a/drivers/net/tun.c b/drivers/net/tun.c
+index e470ae59d405..01f5ff84cf6b 100644
+--- a/drivers/net/tun.c
++++ b/drivers/net/tun.c
+@@ -516,11 +516,13 @@ static void tun_detach_all(struct net_device *dev)
+ for (i = 0; i < n; i++) {
+ tfile = rtnl_dereference(tun->tfiles[i]);
+ BUG_ON(!tfile);
++ tfile->socket.sk->sk_shutdown = RCV_SHUTDOWN;
+ tfile->socket.sk->sk_data_ready(tfile->socket.sk);
+ RCU_INIT_POINTER(tfile->tun, NULL);
+ --tun->numqueues;
+ }
+ list_for_each_entry(tfile, &tun->disabled, next) {
++ tfile->socket.sk->sk_shutdown = RCV_SHUTDOWN;
+ tfile->socket.sk->sk_data_ready(tfile->socket.sk);
+ RCU_INIT_POINTER(tfile->tun, NULL);
+ }
+@@ -575,6 +577,7 @@ static int tun_attach(struct tun_struct *tun, struct file *file, bool skip_filte
+ goto out;
+ }
+ tfile->queue_index = tun->numqueues;
++ tfile->socket.sk->sk_shutdown &= ~RCV_SHUTDOWN;
+ rcu_assign_pointer(tfile->tun, tun);
+ rcu_assign_pointer(tun->tfiles[tun->numqueues], tfile);
+ tun->numqueues++;
+@@ -1357,9 +1360,6 @@ static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile,
+ if (!iov_iter_count(to))
+ return 0;
+
+- if (tun->dev->reg_state != NETREG_REGISTERED)
+- return -EIO;
+-
+ /* Read frames from queue */
+ skb = __skb_recv_datagram(tfile->socket.sk, noblock ? MSG_DONTWAIT : 0,
+ &peeked, &off, &err);
+diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
+index 0b481c30979b..5db25e46a962 100644
+--- a/drivers/net/usb/cdc_ncm.c
++++ b/drivers/net/usb/cdc_ncm.c
+@@ -843,7 +843,11 @@ advance:
+
+ iface_no = ctx->data->cur_altsetting->desc.bInterfaceNumber;
+
+- /* reset data interface */
++ /* Reset data interface. Some devices will not reset properly
++ * unless they are configured first. Toggle the altsetting to
++ * force a reset
++ */
++ usb_set_interface(dev->udev, iface_no, data_altsetting);
+ temp = usb_set_interface(dev->udev, iface_no, 0);
+ if (temp) {
+ dev_dbg(&intf->dev, "set interface failed\n");
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index cffb25280a3b..8153e97408e7 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -749,6 +749,7 @@ static const struct usb_device_id products[] = {
+ {QMI_FIXED_INTF(0x19d2, 0x1426, 2)}, /* ZTE MF91 */
+ {QMI_FIXED_INTF(0x19d2, 0x1428, 2)}, /* Telewell TW-LTE 4G v2 */
+ {QMI_FIXED_INTF(0x19d2, 0x2002, 4)}, /* ZTE (Vodafone) K3765-Z */
++ {QMI_FIXED_INTF(0x2001, 0x7e19, 4)}, /* D-Link DWM-221 B1 */
+ {QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)}, /* Sierra Wireless MC7700 */
+ {QMI_FIXED_INTF(0x114f, 0x68a2, 8)}, /* Sierra Wireless MC7750 */
+ {QMI_FIXED_INTF(0x1199, 0x68a2, 8)}, /* Sierra Wireless MC7710 in QMI mode */
+@@ -767,8 +768,10 @@ static const struct usb_device_id products[] = {
+ {QMI_FIXED_INTF(0x1199, 0x9061, 8)}, /* Sierra Wireless Modem */
+ {QMI_FIXED_INTF(0x1199, 0x9070, 8)}, /* Sierra Wireless MC74xx/EM74xx */
+ {QMI_FIXED_INTF(0x1199, 0x9070, 10)}, /* Sierra Wireless MC74xx/EM74xx */
+- {QMI_FIXED_INTF(0x1199, 0x9071, 8)}, /* Sierra Wireless MC74xx/EM74xx */
+- {QMI_FIXED_INTF(0x1199, 0x9071, 10)}, /* Sierra Wireless MC74xx/EM74xx */
++ {QMI_FIXED_INTF(0x1199, 0x9071, 8)}, /* Sierra Wireless MC74xx */
++ {QMI_FIXED_INTF(0x1199, 0x9071, 10)}, /* Sierra Wireless MC74xx */
++ {QMI_FIXED_INTF(0x1199, 0x9079, 8)}, /* Sierra Wireless EM74xx */
++ {QMI_FIXED_INTF(0x1199, 0x9079, 10)}, /* Sierra Wireless EM74xx */
+ {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)}, /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */
+ {QMI_FIXED_INTF(0x1bbb, 0x0203, 2)}, /* Alcatel L800MA */
+ {QMI_FIXED_INTF(0x2357, 0x0201, 4)}, /* TP-LINK HSUPA Modem MA180 */
+diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
+index e0498571ae26..edbb2f389337 100644
+--- a/drivers/net/usb/usbnet.c
++++ b/drivers/net/usb/usbnet.c
+@@ -1754,6 +1754,13 @@ out3:
+ if (info->unbind)
+ info->unbind (dev, udev);
+ out1:
++ /* subdrivers must undo all they did in bind() if they
++ * fail it, but we may fail later and a deferred kevent
++ * may trigger an error resubmitting itself and, worse,
++ * schedule a timer. So we kill it all just in case.
++ */
++ cancel_work_sync(&dev->kevent);
++ del_timer_sync(&dev->delay);
+ free_netdev(net);
+ out:
+ return status;
+diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
+index 44541dbc5c28..69b994f3b8c5 100644
+--- a/drivers/net/wan/farsync.c
++++ b/drivers/net/wan/farsync.c
+@@ -2516,7 +2516,7 @@ fst_add_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+ dev->mem_start = card->phys_mem
+ + BUF_OFFSET ( txBuffer[i][0][0]);
+ dev->mem_end = card->phys_mem
+- + BUF_OFFSET ( txBuffer[i][NUM_TX_BUFFER][0]);
++ + BUF_OFFSET ( txBuffer[i][NUM_TX_BUFFER - 1][LEN_RX_BUFFER - 1]);
+ dev->base_addr = card->pci_conf;
+ dev->irq = card->irq;
+
+diff --git a/drivers/net/wireless/ath/ath9k/eeprom.c b/drivers/net/wireless/ath/ath9k/eeprom.c
+index cc81482c934d..113a43fca9cf 100644
+--- a/drivers/net/wireless/ath/ath9k/eeprom.c
++++ b/drivers/net/wireless/ath/ath9k/eeprom.c
+@@ -403,10 +403,9 @@ void ath9k_hw_get_gain_boundaries_pdadcs(struct ath_hw *ah,
+
+ if (match) {
+ if (AR_SREV_9287(ah)) {
+- /* FIXME: array overrun? */
+ for (i = 0; i < numXpdGains; i++) {
+ minPwrT4[i] = data_9287[idxL].pwrPdg[i][0];
+- maxPwrT4[i] = data_9287[idxL].pwrPdg[i][4];
++ maxPwrT4[i] = data_9287[idxL].pwrPdg[i][intercepts - 1];
+ ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
+ data_9287[idxL].pwrPdg[i],
+ data_9287[idxL].vpdPdg[i],
+@@ -416,7 +415,7 @@ void ath9k_hw_get_gain_boundaries_pdadcs(struct ath_hw *ah,
+ } else if (eeprom_4k) {
+ for (i = 0; i < numXpdGains; i++) {
+ minPwrT4[i] = data_4k[idxL].pwrPdg[i][0];
+- maxPwrT4[i] = data_4k[idxL].pwrPdg[i][4];
++ maxPwrT4[i] = data_4k[idxL].pwrPdg[i][intercepts - 1];
+ ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
+ data_4k[idxL].pwrPdg[i],
+ data_4k[idxL].vpdPdg[i],
+@@ -426,7 +425,7 @@ void ath9k_hw_get_gain_boundaries_pdadcs(struct ath_hw *ah,
+ } else {
+ for (i = 0; i < numXpdGains; i++) {
+ minPwrT4[i] = data_def[idxL].pwrPdg[i][0];
+- maxPwrT4[i] = data_def[idxL].pwrPdg[i][4];
++ maxPwrT4[i] = data_def[idxL].pwrPdg[i][intercepts - 1];
+ ath9k_hw_fill_vpd_table(minPwrT4[i], maxPwrT4[i],
+ data_def[idxL].pwrPdg[i],
+ data_def[idxL].vpdPdg[i],
+diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
+index c44393f26fd3..4e720ed402ef 100644
+--- a/drivers/pci/pci.c
++++ b/drivers/pci/pci.c
+@@ -4520,8 +4520,10 @@ int pci_get_new_domain_nr(void)
+ void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent)
+ {
+ static int use_dt_domains = -1;
+- int domain = of_get_pci_domain_nr(parent->of_node);
++ int domain = -1;
+
++ if (parent)
++ domain = of_get_pci_domain_nr(parent->of_node);
+ /*
+ * Check DT domain and use_dt_domains values.
+ *
+diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
+index e261f1cf85c6..09c05bffe026 100644
+--- a/drivers/pinctrl/freescale/pinctrl-imx.c
++++ b/drivers/pinctrl/freescale/pinctrl-imx.c
+@@ -205,9 +205,9 @@ static int imx_pmx_set(struct pinctrl_dev *pctldev, unsigned selector,
+ pin_reg = &info->pin_regs[pin_id];
+
+ if (pin_reg->mux_reg == -1) {
+- dev_err(ipctl->dev, "Pin(%s) does not support mux function\n",
++ dev_dbg(ipctl->dev, "Pin(%s) does not support mux function\n",
+ info->pins[pin_id].name);
+- return -EINVAL;
++ continue;
+ }
+
+ if (info->flags & SHARE_MUX_CONF_REG) {
+diff --git a/drivers/pinctrl/nomadik/pinctrl-nomadik.c b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+index a6a22054c0ba..f4b1dac45aca 100644
+--- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c
++++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+@@ -1025,7 +1025,7 @@ static void nmk_gpio_dbg_show_one(struct seq_file *s,
+ int pullidx = 0;
+
+ if (pull)
+- pullidx = data_out ? 1 : 2;
++ pullidx = data_out ? 2 : 1;
+
+ seq_printf(s, " gpio-%-3d (%-20.20s) in %s %s",
+ gpio,
+diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
+index 13b45f297727..f2e4232ea98d 100644
+--- a/drivers/pinctrl/pinctrl-single.c
++++ b/drivers/pinctrl/pinctrl-single.c
+@@ -1273,9 +1273,9 @@ static int pcs_parse_bits_in_pinctrl_entry(struct pcs_device *pcs,
+
+ /* Parse pins in each row from LSB */
+ while (mask) {
+- bit_pos = ffs(mask);
++ bit_pos = __ffs(mask);
+ pin_num_from_lsb = bit_pos / pcs->bits_per_pin;
+- mask_pos = ((pcs->fmask) << (bit_pos - 1));
++ mask_pos = ((pcs->fmask) << bit_pos);
+ val_pos = val & mask_pos;
+ submask = mask & mask_pos;
+
+@@ -1576,6 +1576,9 @@ static inline void pcs_irq_set(struct pcs_soc_data *pcs_soc,
+ else
+ mask &= ~soc_mask;
+ pcs->write(mask, pcswi->reg);
++
++ /* flush posted write */
++ mask = pcs->read(pcswi->reg);
+ raw_spin_unlock(&pcs->lock);
+ }
+
+@@ -1851,7 +1854,7 @@ static int pcs_probe(struct platform_device *pdev)
+ ret = of_property_read_u32(np, "pinctrl-single,function-mask",
+ &pcs->fmask);
+ if (!ret) {
+- pcs->fshift = ffs(pcs->fmask) - 1;
++ pcs->fshift = __ffs(pcs->fmask);
+ pcs->fmax = pcs->fmask >> pcs->fshift;
+ } else {
+ /* If mask property doesn't exist, function mux is invalid. */
+diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
+index 4bc0c7f459a5..b2bf48c7dc36 100644
+--- a/drivers/power/power_supply_core.c
++++ b/drivers/power/power_supply_core.c
+@@ -526,11 +526,12 @@ static int power_supply_read_temp(struct thermal_zone_device *tzd,
+
+ WARN_ON(tzd == NULL);
+ psy = tzd->devdata;
+- ret = psy->desc->get_property(psy, POWER_SUPPLY_PROP_TEMP, &val);
++ ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_TEMP, &val);
++ if (ret)
++ return ret;
+
+ /* Convert tenths of degree Celsius to milli degree Celsius. */
+- if (!ret)
+- *temp = val.intval * 100;
++ *temp = val.intval * 100;
+
+ return ret;
+ }
+@@ -573,10 +574,12 @@ static int ps_get_max_charge_cntl_limit(struct thermal_cooling_device *tcd,
+ int ret;
+
+ psy = tcd->devdata;
+- ret = psy->desc->get_property(psy,
+- POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, &val);
+- if (!ret)
+- *state = val.intval;
++ ret = power_supply_get_property(psy,
++ POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, &val);
++ if (ret)
++ return ret;
++
++ *state = val.intval;
+
+ return ret;
+ }
+@@ -589,10 +592,12 @@ static int ps_get_cur_chrage_cntl_limit(struct thermal_cooling_device *tcd,
+ int ret;
+
+ psy = tcd->devdata;
+- ret = psy->desc->get_property(psy,
+- POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val);
+- if (!ret)
+- *state = val.intval;
++ ret = power_supply_get_property(psy,
++ POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val);
++ if (ret)
++ return ret;
++
++ *state = val.intval;
+
+ return ret;
+ }
+diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
+index 58f5d3b8e981..27343e1c43ef 100644
+--- a/drivers/regulator/s5m8767.c
++++ b/drivers/regulator/s5m8767.c
+@@ -202,9 +202,10 @@ static int s5m8767_get_register(struct s5m8767_info *s5m8767, int reg_id,
+ }
+ }
+
+- if (i < s5m8767->num_regulators)
+- *enable_ctrl =
+- s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT;
++ if (i >= s5m8767->num_regulators)
++ return -EINVAL;
++
++ *enable_ctrl = s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT;
+
+ return 0;
+ }
+@@ -937,8 +938,12 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
+ else
+ regulators[id].vsel_mask = 0xff;
+
+- s5m8767_get_register(s5m8767, id, &enable_reg,
++ ret = s5m8767_get_register(s5m8767, id, &enable_reg,
+ &enable_val);
++ if (ret) {
++ dev_err(s5m8767->dev, "error reading registers\n");
++ return ret;
++ }
+ regulators[id].enable_reg = enable_reg;
+ regulators[id].enable_mask = S5M8767_ENCTRL_MASK;
+ regulators[id].enable_val = enable_val;
+diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
+index 818a3635a8c8..86865881ce4b 100644
+--- a/drivers/rtc/rtc-ds1685.c
++++ b/drivers/rtc/rtc-ds1685.c
+@@ -187,9 +187,9 @@ ds1685_rtc_end_data_access(struct ds1685_priv *rtc)
+ * Only use this where you are certain another lock will not be held.
+ */
+ static inline void
+-ds1685_rtc_begin_ctrl_access(struct ds1685_priv *rtc, unsigned long flags)
++ds1685_rtc_begin_ctrl_access(struct ds1685_priv *rtc, unsigned long *flags)
+ {
+- spin_lock_irqsave(&rtc->lock, flags);
++ spin_lock_irqsave(&rtc->lock, *flags);
+ ds1685_rtc_switch_to_bank1(rtc);
+ }
+
+@@ -1304,7 +1304,7 @@ ds1685_rtc_sysfs_ctrl_regs_store(struct device *dev,
+ {
+ struct ds1685_priv *rtc = dev_get_drvdata(dev);
+ u8 reg = 0, bit = 0, tmp;
+- unsigned long flags = 0;
++ unsigned long flags;
+ long int val = 0;
+ const struct ds1685_rtc_ctrl_regs *reg_info =
+ ds1685_rtc_sysfs_ctrl_regs_lookup(attr->attr.name);
+@@ -1325,7 +1325,7 @@ ds1685_rtc_sysfs_ctrl_regs_store(struct device *dev,
+ bit = reg_info->bit;
+
+ /* Safe to spinlock during a write. */
+- ds1685_rtc_begin_ctrl_access(rtc, flags);
++ ds1685_rtc_begin_ctrl_access(rtc, &flags);
+ tmp = rtc->read(rtc, reg);
+ rtc->write(rtc, reg, (val ? (tmp | bit) : (tmp & ~(bit))));
+ ds1685_rtc_end_ctrl_access(rtc, flags);
+diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
+index 0f710e98538f..3db1557e5394 100644
+--- a/drivers/rtc/rtc-hym8563.c
++++ b/drivers/rtc/rtc-hym8563.c
+@@ -144,7 +144,7 @@ static int hym8563_rtc_set_time(struct device *dev, struct rtc_time *tm)
+ * it does not seem to carry it over a subsequent write/read.
+ * So we'll limit ourself to 100 years, starting at 2000 for now.
+ */
+- buf[6] = tm->tm_year - 100;
++ buf[6] = bin2bcd(tm->tm_year - 100);
+
+ /*
+ * CTL1 only contains TEST-mode bits apart from stop,
+diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
+index 7632a87784c3..d42cef0ca939 100644
+--- a/drivers/rtc/rtc-max77686.c
++++ b/drivers/rtc/rtc-max77686.c
+@@ -465,7 +465,7 @@ static int max77686_rtc_probe(struct platform_device *pdev)
+
+ info->virq = regmap_irq_get_virq(max77686->rtc_irq_data,
+ MAX77686_RTCIRQ_RTCA1);
+- if (!info->virq) {
++ if (info->virq <= 0) {
+ ret = -ENXIO;
+ goto err_rtc;
+ }
+diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
+index f64c282275b3..e1b86bb01062 100644
+--- a/drivers/rtc/rtc-vr41xx.c
++++ b/drivers/rtc/rtc-vr41xx.c
+@@ -272,12 +272,13 @@ static irqreturn_t rtclong1_interrupt(int irq, void *dev_id)
+ }
+
+ static const struct rtc_class_ops vr41xx_rtc_ops = {
+- .release = vr41xx_rtc_release,
+- .ioctl = vr41xx_rtc_ioctl,
+- .read_time = vr41xx_rtc_read_time,
+- .set_time = vr41xx_rtc_set_time,
+- .read_alarm = vr41xx_rtc_read_alarm,
+- .set_alarm = vr41xx_rtc_set_alarm,
++ .release = vr41xx_rtc_release,
++ .ioctl = vr41xx_rtc_ioctl,
++ .read_time = vr41xx_rtc_read_time,
++ .set_time = vr41xx_rtc_set_time,
++ .read_alarm = vr41xx_rtc_read_alarm,
++ .set_alarm = vr41xx_rtc_set_alarm,
++ .alarm_irq_enable = vr41xx_rtc_alarm_irq_enable,
+ };
+
+ static int rtc_probe(struct platform_device *pdev)
+diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
+index e8c8c1ecc1f5..bf8fd38abbbd 100644
+--- a/drivers/scsi/lpfc/lpfc_init.c
++++ b/drivers/scsi/lpfc/lpfc_init.c
+@@ -2848,7 +2848,7 @@ lpfc_online(struct lpfc_hba *phba)
+ }
+
+ vports = lpfc_create_vport_work_array(phba);
+- if (vports != NULL)
++ if (vports != NULL) {
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
+ struct Scsi_Host *shost;
+ shost = lpfc_shost_from_vport(vports[i]);
+@@ -2865,7 +2865,8 @@ lpfc_online(struct lpfc_hba *phba)
+ }
+ spin_unlock_irq(shost->host_lock);
+ }
+- lpfc_destroy_vport_work_array(phba, vports);
++ }
++ lpfc_destroy_vport_work_array(phba, vports);
+
+ lpfc_unblock_mgmt_io(phba);
+ return 0;
+diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
+index 890637fdd61e..7a1c4b4e764b 100644
+--- a/drivers/scsi/megaraid/megaraid_sas_base.c
++++ b/drivers/scsi/megaraid/megaraid_sas_base.c
+@@ -6203,12 +6203,13 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
+ }
+
+ for (i = 0; i < ioc->sge_count; i++) {
+- if (kbuff_arr[i])
++ if (kbuff_arr[i]) {
+ dma_free_coherent(&instance->pdev->dev,
+ le32_to_cpu(kern_sge32[i].length),
+ kbuff_arr[i],
+ le32_to_cpu(kern_sge32[i].phys_addr));
+ kbuff_arr[i] = NULL;
++ }
+ }
+
+ if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
+diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
+index c6b93d273799..841fdf745fcf 100644
+--- a/drivers/scsi/scsi_error.c
++++ b/drivers/scsi/scsi_error.c
+@@ -1122,7 +1122,6 @@ static int scsi_eh_action(struct scsi_cmnd *scmd, int rtn)
+ */
+ void scsi_eh_finish_cmd(struct scsi_cmnd *scmd, struct list_head *done_q)
+ {
+- scmd->device->host->host_failed--;
+ scmd->eh_eflags = 0;
+ list_move_tail(&scmd->eh_entry, done_q);
+ }
+@@ -2216,6 +2215,9 @@ int scsi_error_handler(void *data)
+ else
+ scsi_unjam_host(shost);
+
++ /* All scmds have been handled */
++ shost->host_failed = 0;
++
+ /*
+ * Note - if the above fails completely, the action is to take
+ * individual devices offline and flush the queue of any
+diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
+index 68e7efeb9a27..1d308cba29b1 100644
+--- a/drivers/spi/spi-rockchip.c
++++ b/drivers/spi/spi-rockchip.c
+@@ -265,7 +265,10 @@ static inline u32 rx_max(struct rockchip_spi *rs)
+ static void rockchip_spi_set_cs(struct spi_device *spi, bool enable)
+ {
+ u32 ser;
+- struct rockchip_spi *rs = spi_master_get_devdata(spi->master);
++ struct spi_master *master = spi->master;
++ struct rockchip_spi *rs = spi_master_get_devdata(master);
++
++ pm_runtime_get_sync(rs->dev);
+
+ ser = readl_relaxed(rs->regs + ROCKCHIP_SPI_SER) & SER_MASK;
+
+@@ -290,6 +293,8 @@ static void rockchip_spi_set_cs(struct spi_device *spi, bool enable)
+ ser &= ~(1 << spi->chip_select);
+
+ writel_relaxed(ser, rs->regs + ROCKCHIP_SPI_SER);
++
++ pm_runtime_put_sync(rs->dev);
+ }
+
+ static int rockchip_spi_prepare_message(struct spi_master *master,
+diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c
+index fbb0a4d74e91..39d7c7c70112 100644
+--- a/drivers/spi/spi-sun4i.c
++++ b/drivers/spi/spi-sun4i.c
+@@ -170,13 +170,17 @@ static int sun4i_spi_transfer_one(struct spi_master *master,
+ {
+ struct sun4i_spi *sspi = spi_master_get_devdata(master);
+ unsigned int mclk_rate, div, timeout;
++ unsigned int start, end, tx_time;
+ unsigned int tx_len = 0;
+ int ret = 0;
+ u32 reg;
+
+ /* We don't support transfer larger than the FIFO */
+ if (tfr->len > SUN4I_FIFO_DEPTH)
+- return -EINVAL;
++ return -EMSGSIZE;
++
++ if (tfr->tx_buf && tfr->len >= SUN4I_FIFO_DEPTH)
++ return -EMSGSIZE;
+
+ reinit_completion(&sspi->done);
+ sspi->tx_buf = tfr->tx_buf;
+@@ -269,8 +273,12 @@ static int sun4i_spi_transfer_one(struct spi_master *master,
+ sun4i_spi_write(sspi, SUN4I_BURST_CNT_REG, SUN4I_BURST_CNT(tfr->len));
+ sun4i_spi_write(sspi, SUN4I_XMIT_CNT_REG, SUN4I_XMIT_CNT(tx_len));
+
+- /* Fill the TX FIFO */
+- sun4i_spi_fill_fifo(sspi, SUN4I_FIFO_DEPTH);
++ /*
++ * Fill the TX FIFO
++ * Filling the FIFO fully causes timeout for some reason
++ * at least on spi2 on A10s
++ */
++ sun4i_spi_fill_fifo(sspi, SUN4I_FIFO_DEPTH - 1);
+
+ /* Enable the interrupts */
+ sun4i_spi_write(sspi, SUN4I_INT_CTL_REG, SUN4I_INT_CTL_TC);
+@@ -279,9 +287,16 @@ static int sun4i_spi_transfer_one(struct spi_master *master,
+ reg = sun4i_spi_read(sspi, SUN4I_CTL_REG);
+ sun4i_spi_write(sspi, SUN4I_CTL_REG, reg | SUN4I_CTL_XCH);
+
++ tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U);
++ start = jiffies;
+ timeout = wait_for_completion_timeout(&sspi->done,
+- msecs_to_jiffies(1000));
++ msecs_to_jiffies(tx_time));
++ end = jiffies;
+ if (!timeout) {
++ dev_warn(&master->dev,
++ "%s: timeout transferring %u bytes@%iHz for %i(%i)ms",
++ dev_name(&spi->dev), tfr->len, tfr->speed_hz,
++ jiffies_to_msecs(end - start), tx_time);
+ ret = -ETIMEDOUT;
+ goto out;
+ }
+diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c
+index ac48f59705a8..e77add01b0e9 100644
+--- a/drivers/spi/spi-sun6i.c
++++ b/drivers/spi/spi-sun6i.c
+@@ -160,6 +160,7 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
+ {
+ struct sun6i_spi *sspi = spi_master_get_devdata(master);
+ unsigned int mclk_rate, div, timeout;
++ unsigned int start, end, tx_time;
+ unsigned int tx_len = 0;
+ int ret = 0;
+ u32 reg;
+@@ -269,9 +270,16 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
+ reg = sun6i_spi_read(sspi, SUN6I_TFR_CTL_REG);
+ sun6i_spi_write(sspi, SUN6I_TFR_CTL_REG, reg | SUN6I_TFR_CTL_XCH);
+
++ tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U);
++ start = jiffies;
+ timeout = wait_for_completion_timeout(&sspi->done,
+- msecs_to_jiffies(1000));
++ msecs_to_jiffies(tx_time));
++ end = jiffies;
+ if (!timeout) {
++ dev_warn(&master->dev,
++ "%s: timeout transferring %u bytes@%iHz for %i(%i)ms",
++ dev_name(&spi->dev), tfr->len, tfr->speed_hz,
++ jiffies_to_msecs(end - start), tx_time);
+ ret = -ETIMEDOUT;
+ goto out;
+ }
+diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
+index b4fd8debf941..a64d53f7b1d1 100644
+--- a/drivers/tty/serial/8250/8250_core.c
++++ b/drivers/tty/serial/8250/8250_core.c
+@@ -791,22 +791,16 @@ static int size_fifo(struct uart_8250_port *up)
+ */
+ static unsigned int autoconfig_read_divisor_id(struct uart_8250_port *p)
+ {
+- unsigned char old_dll, old_dlm, old_lcr;
+- unsigned int id;
++ unsigned char old_lcr;
++ unsigned int id, old_dl;
+
+ old_lcr = serial_in(p, UART_LCR);
+ serial_out(p, UART_LCR, UART_LCR_CONF_MODE_A);
++ old_dl = serial_dl_read(p);
++ serial_dl_write(p, 0);
++ id = serial_dl_read(p);
++ serial_dl_write(p, old_dl);
+
+- old_dll = serial_in(p, UART_DLL);
+- old_dlm = serial_in(p, UART_DLM);
+-
+- serial_out(p, UART_DLL, 0);
+- serial_out(p, UART_DLM, 0);
+-
+- id = serial_in(p, UART_DLL) | serial_in(p, UART_DLM) << 8;
+-
+- serial_out(p, UART_DLL, old_dll);
+- serial_out(p, UART_DLM, old_dlm);
+ serial_out(p, UART_LCR, old_lcr);
+
+ return id;
+diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
+index 1e0d9b8c48c9..e42cb6bdd31d 100644
+--- a/drivers/tty/serial/samsung.c
++++ b/drivers/tty/serial/samsung.c
+@@ -1288,6 +1288,8 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
+ /* check to see if we need to change clock source */
+
+ if (ourport->baudclk != clk) {
++ clk_prepare_enable(clk);
++
+ s3c24xx_serial_setsource(port, clk_sel);
+
+ if (!IS_ERR(ourport->baudclk)) {
+@@ -1295,8 +1297,6 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
+ ourport->baudclk = ERR_PTR(-EINVAL);
+ }
+
+- clk_prepare_enable(clk);
+-
+ ourport->baudclk = clk;
+ ourport->baudclk_rate = clk ? clk_get_rate(clk) : 0;
+ }
+diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
+index 4a24eb2b0ede..ba86956ef4b5 100644
+--- a/drivers/tty/vt/vt.c
++++ b/drivers/tty/vt/vt.c
+@@ -3587,9 +3587,10 @@ static int do_register_con_driver(const struct consw *csw, int first, int last)
+ goto err;
+
+ desc = csw->con_startup();
+-
+- if (!desc)
++ if (!desc) {
++ retval = -ENODEV;
+ goto err;
++ }
+
+ retval = -EINVAL;
+
+diff --git a/drivers/usb/common/usb-otg-fsm.c b/drivers/usb/common/usb-otg-fsm.c
+index 61d538aa2346..4f4f06a5889f 100644
+--- a/drivers/usb/common/usb-otg-fsm.c
++++ b/drivers/usb/common/usb-otg-fsm.c
+@@ -21,6 +21,7 @@
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
++#include <linux/module.h>
+ #include <linux/kernel.h>
+ #include <linux/types.h>
+ #include <linux/mutex.h>
+@@ -365,3 +366,4 @@ int otg_statemachine(struct otg_fsm *fsm)
+ return state_changed;
+ }
+ EXPORT_SYMBOL_GPL(otg_statemachine);
++MODULE_LICENSE("GPL");
+diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
+index e47cfcd5640c..3a49ba2910df 100644
+--- a/drivers/usb/core/hcd.c
++++ b/drivers/usb/core/hcd.c
+@@ -2522,26 +2522,23 @@ EXPORT_SYMBOL_GPL(usb_create_hcd);
+ * Don't deallocate the bandwidth_mutex until the last shared usb_hcd is
+ * deallocated.
+ *
+- * Make sure to only deallocate the bandwidth_mutex when the primary HCD is
+- * freed. When hcd_release() is called for either hcd in a peer set
+- * invalidate the peer's ->shared_hcd and ->primary_hcd pointers to
+- * block new peering attempts
++ * Make sure to deallocate the bandwidth_mutex only when the last HCD is
++ * freed. When hcd_release() is called for either hcd in a peer set,
++ * invalidate the peer's ->shared_hcd and ->primary_hcd pointers.
+ */
+ static void hcd_release(struct kref *kref)
+ {
+ struct usb_hcd *hcd = container_of (kref, struct usb_hcd, kref);
+
+ mutex_lock(&usb_port_peer_mutex);
+- if (usb_hcd_is_primary_hcd(hcd)) {
+- kfree(hcd->address0_mutex);
+- kfree(hcd->bandwidth_mutex);
+- }
+ if (hcd->shared_hcd) {
+ struct usb_hcd *peer = hcd->shared_hcd;
+
+ peer->shared_hcd = NULL;
+- if (peer->primary_hcd == hcd)
+- peer->primary_hcd = NULL;
++ peer->primary_hcd = NULL;
++ } else {
++ kfree(hcd->address0_mutex);
++ kfree(hcd->bandwidth_mutex);
+ }
+ mutex_unlock(&usb_port_peer_mutex);
+ kfree(hcd);
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 017c1de53aa5..f28b5375e2c8 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -44,6 +44,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* Creative SB Audigy 2 NX */
+ { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
+
++ /* USB3503 */
++ { USB_DEVICE(0x0424, 0x3503), .driver_info = USB_QUIRK_RESET_RESUME },
++
+ /* Microsoft Wireless Laser Mouse 6000 Receiver */
+ { USB_DEVICE(0x045e, 0x00e1), .driver_info = USB_QUIRK_RESET_RESUME },
+
+@@ -170,6 +173,10 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* MAYA44USB sound device */
+ { USB_DEVICE(0x0a92, 0x0091), .driver_info = USB_QUIRK_RESET_RESUME },
+
++ /* ASUS Base Station(T100) */
++ { USB_DEVICE(0x0b05, 0x17e0), .driver_info =
++ USB_QUIRK_IGNORE_REMOTE_WAKEUP },
++
+ /* Action Semiconductor flash disk */
+ { USB_DEVICE(0x10d6, 0x2200), .driver_info =
+ USB_QUIRK_STRING_FETCH_255 },
+@@ -185,26 +192,22 @@ static const struct usb_device_id usb_quirk_list[] = {
+ { USB_DEVICE(0x1908, 0x1315), .driver_info =
+ USB_QUIRK_HONOR_BNUMINTERFACES },
+
+- /* INTEL VALUE SSD */
+- { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
+-
+- /* USB3503 */
+- { USB_DEVICE(0x0424, 0x3503), .driver_info = USB_QUIRK_RESET_RESUME },
+-
+- /* ASUS Base Station(T100) */
+- { USB_DEVICE(0x0b05, 0x17e0), .driver_info =
+- USB_QUIRK_IGNORE_REMOTE_WAKEUP },
+-
+ /* Protocol and OTG Electrical Test Device */
+ { USB_DEVICE(0x1a0a, 0x0200), .driver_info =
+ USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
+
++ /* Acer C120 LED Projector */
++ { USB_DEVICE(0x1de1, 0xc102), .driver_info = USB_QUIRK_NO_LPM },
++
+ /* Blackmagic Design Intensity Shuttle */
+ { USB_DEVICE(0x1edb, 0xbd3b), .driver_info = USB_QUIRK_NO_LPM },
+
+ /* Blackmagic Design UltraStudio SDI */
+ { USB_DEVICE(0x1edb, 0xbd4f), .driver_info = USB_QUIRK_NO_LPM },
+
++ /* INTEL VALUE SSD */
++ { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
++
+ { } /* terminating entry must be last */
+ };
+
+diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
+index 7bd0a95b2815..0a465a90f0d6 100644
+--- a/drivers/usb/dwc3/dwc3-exynos.c
++++ b/drivers/usb/dwc3/dwc3-exynos.c
+@@ -128,12 +128,6 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
+
+ platform_set_drvdata(pdev, exynos);
+
+- ret = dwc3_exynos_register_phys(exynos);
+- if (ret) {
+- dev_err(dev, "couldn't register PHYs\n");
+- return ret;
+- }
+-
+ exynos->dev = dev;
+
+ exynos->clk = devm_clk_get(dev, "usbdrd30");
+@@ -183,20 +177,29 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
+ goto err3;
+ }
+
++ ret = dwc3_exynos_register_phys(exynos);
++ if (ret) {
++ dev_err(dev, "couldn't register PHYs\n");
++ goto err4;
++ }
++
+ if (node) {
+ ret = of_platform_populate(node, NULL, NULL, dev);
+ if (ret) {
+ dev_err(dev, "failed to add dwc3 core\n");
+- goto err4;
++ goto err5;
+ }
+ } else {
+ dev_err(dev, "no device node, failed to add dwc3 core\n");
+ ret = -ENODEV;
+- goto err4;
++ goto err5;
+ }
+
+ return 0;
+
++err5:
++ platform_device_unregister(exynos->usb2_phy);
++ platform_device_unregister(exynos->usb3_phy);
+ err4:
+ regulator_disable(exynos->vdd10);
+ err3:
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 82240dbdf6dd..db9433eed2cc 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -651,7 +651,7 @@ static void ffs_user_copy_worker(struct work_struct *work)
+ if (io_data->read && ret > 0) {
+ use_mm(io_data->mm);
+ ret = copy_to_iter(io_data->buf, ret, &io_data->data);
+- if (iov_iter_count(&io_data->data))
++ if (ret != io_data->req->actual && iov_iter_count(&io_data->data))
+ ret = -EFAULT;
+ unuse_mm(io_data->mm);
+ }
+diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
+index 2030565c6789..bccc5788bb98 100644
+--- a/drivers/usb/gadget/legacy/inode.c
++++ b/drivers/usb/gadget/legacy/inode.c
+@@ -934,8 +934,11 @@ ep0_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr)
+ struct usb_ep *ep = dev->gadget->ep0;
+ struct usb_request *req = dev->req;
+
+- if ((retval = setup_req (ep, req, 0)) == 0)
+- retval = usb_ep_queue (ep, req, GFP_ATOMIC);
++ if ((retval = setup_req (ep, req, 0)) == 0) {
++ spin_unlock_irq (&dev->lock);
++ retval = usb_ep_queue (ep, req, GFP_KERNEL);
++ spin_lock_irq (&dev->lock);
++ }
+ dev->state = STATE_DEV_CONNECTED;
+
+ /* assume that was SET_CONFIGURATION */
+@@ -1453,8 +1456,11 @@ delegate:
+ w_length);
+ if (value < 0)
+ break;
++
++ spin_unlock (&dev->lock);
+ value = usb_ep_queue (gadget->ep0, dev->req,
+- GFP_ATOMIC);
++ GFP_KERNEL);
++ spin_lock (&dev->lock);
+ if (value < 0) {
+ clean_req (gadget->ep0, dev->req);
+ break;
+@@ -1477,11 +1483,14 @@ delegate:
+ if (value >= 0 && dev->state != STATE_DEV_SETUP) {
+ req->length = value;
+ req->zero = value < w_length;
+- value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
++
++ spin_unlock (&dev->lock);
++ value = usb_ep_queue (gadget->ep0, req, GFP_KERNEL);
+ if (value < 0) {
+ DBG (dev, "ep_queue --> %d\n", value);
+ req->status = 0;
+ }
++ return value;
+ }
+
+ /* device stalls when value < 0 */
+diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
+index ff9af29b4e9f..d888a00195ac 100644
+--- a/drivers/usb/host/ehci-tegra.c
++++ b/drivers/usb/host/ehci-tegra.c
+@@ -89,7 +89,7 @@ static int tegra_reset_usb_controller(struct platform_device *pdev)
+ if (!usb1_reset_attempted) {
+ struct reset_control *usb1_reset;
+
+- usb1_reset = of_reset_control_get(phy_np, "usb");
++ usb1_reset = of_reset_control_get(phy_np, "utmi-pads");
+ if (IS_ERR(usb1_reset)) {
+ dev_warn(&pdev->dev,
+ "can't get utmi-pads reset from the PHY\n");
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index c6027acb6263..54caaf87c567 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -37,6 +37,7 @@
+ /* Device for a quirk */
+ #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73
+ #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000
++#define PCI_DEVICE_ID_FRESCO_LOGIC_FL1009 0x1009
+ #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1400 0x1400
+
+ #define PCI_VENDOR_ID_ETRON 0x1b6f
+@@ -108,6 +109,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+ }
+
++ if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
++ pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1009)
++ xhci->quirks |= XHCI_BROKEN_STREAMS;
++
+ if (pdev->vendor == PCI_VENDOR_ID_NEC)
+ xhci->quirks |= XHCI_NEC_HOST;
+
+diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
+index 783e819139a7..7606710baf43 100644
+--- a/drivers/usb/host/xhci-plat.c
++++ b/drivers/usb/host/xhci-plat.c
+@@ -116,6 +116,9 @@ static int xhci_plat_probe(struct platform_device *pdev)
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ goto put_hcd;
++ } else if (PTR_ERR(clk) == -EPROBE_DEFER) {
++ ret = -EPROBE_DEFER;
++ goto put_hcd;
+ }
+
+ if (of_device_is_compatible(pdev->dev.of_node,
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index 6fe0377ec5cf..6ef255142e01 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -289,6 +289,14 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci)
+
+ temp_64 = xhci_read_64(xhci, &xhci->op_regs->cmd_ring);
+ xhci->cmd_ring_state = CMD_RING_STATE_ABORTED;
++
++ /*
++ * Writing the CMD_RING_ABORT bit should cause a cmd completion event,
++ * however on some host hw the CMD_RING_RUNNING bit is correctly cleared
++ * but the completion event in never sent. Use the cmd timeout timer to
++ * handle those cases. Use twice the time to cover the bit polling retry
++ */
++ mod_timer(&xhci->cmd_timer, jiffies + (2 * XHCI_CMD_DEFAULT_TIMEOUT));
+ xhci_write_64(xhci, temp_64 | CMD_RING_ABORT,
+ &xhci->op_regs->cmd_ring);
+
+@@ -313,6 +321,7 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci)
+
+ xhci_err(xhci, "Stopped the command ring failed, "
+ "maybe the host is dead\n");
++ del_timer(&xhci->cmd_timer);
+ xhci->xhc_state |= XHCI_STATE_DYING;
+ xhci_quiesce(xhci);
+ xhci_halt(xhci);
+@@ -1252,22 +1261,21 @@ void xhci_handle_command_timeout(unsigned long data)
+ int ret;
+ unsigned long flags;
+ u64 hw_ring_state;
+- struct xhci_command *cur_cmd = NULL;
++ bool second_timeout = false;
+ xhci = (struct xhci_hcd *) data;
+
+ /* mark this command to be cancelled */
+ spin_lock_irqsave(&xhci->lock, flags);
+ if (xhci->current_cmd) {
+- cur_cmd = xhci->current_cmd;
+- cur_cmd->status = COMP_CMD_ABORT;
++ if (xhci->current_cmd->status == COMP_CMD_ABORT)
++ second_timeout = true;
++ xhci->current_cmd->status = COMP_CMD_ABORT;
+ }
+
+-
+ /* Make sure command ring is running before aborting it */
+ hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring);
+ if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) &&
+ (hw_ring_state & CMD_RING_RUNNING)) {
+-
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ xhci_dbg(xhci, "Command timeout\n");
+ ret = xhci_abort_cmd_ring(xhci);
+@@ -1279,6 +1287,15 @@ void xhci_handle_command_timeout(unsigned long data)
+ }
+ return;
+ }
++
++ /* command ring failed to restart, or host removed. Bail out */
++ if (second_timeout || xhci->xhc_state & XHCI_STATE_REMOVING) {
++ spin_unlock_irqrestore(&xhci->lock, flags);
++ xhci_dbg(xhci, "command timed out twice, ring start fail?\n");
++ xhci_cleanup_command_queue(xhci);
++ return;
++ }
++
+ /* command timeout on stopped ring, ring can't be aborted */
+ xhci_dbg(xhci, "Command timeout on stopped ring\n");
+ xhci_handle_stopped_cmd_ring(xhci, xhci->current_cmd);
+diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
+index c3d5fc9dfb5b..06853d7c89fd 100644
+--- a/drivers/usb/musb/musb_host.c
++++ b/drivers/usb/musb/musb_host.c
+@@ -583,14 +583,13 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, struct musb_hw_ep *ep)
+ musb_writew(ep->regs, MUSB_TXCSR, 0);
+
+ /* scrub all previous state, clearing toggle */
+- } else {
+- csr = musb_readw(ep->regs, MUSB_RXCSR);
+- if (csr & MUSB_RXCSR_RXPKTRDY)
+- WARNING("rx%d, packet/%d ready?\n", ep->epnum,
+- musb_readw(ep->regs, MUSB_RXCOUNT));
+-
+- musb_h_flush_rxfifo(ep, MUSB_RXCSR_CLRDATATOG);
+ }
++ csr = musb_readw(ep->regs, MUSB_RXCSR);
++ if (csr & MUSB_RXCSR_RXPKTRDY)
++ WARNING("rx%d, packet/%d ready?\n", ep->epnum,
++ musb_readw(ep->regs, MUSB_RXCOUNT));
++
++ musb_h_flush_rxfifo(ep, MUSB_RXCSR_CLRDATATOG);
+
+ /* target addr and (for multipoint) hub addr/port */
+ if (musb->is_multipoint) {
+@@ -950,9 +949,15 @@ static void musb_bulk_nak_timeout(struct musb *musb, struct musb_hw_ep *ep,
+ if (is_in) {
+ dma = is_dma_capable() ? ep->rx_channel : NULL;
+
+- /* clear nak timeout bit */
++ /*
++ * Need to stop the transaction by clearing REQPKT first
++ * then the NAK Timeout bit ref MUSBMHDRC USB 2.0 HIGH-SPEED
++ * DUAL-ROLE CONTROLLER Programmer's Guide, section 9.2.2
++ */
+ rx_csr = musb_readw(epio, MUSB_RXCSR);
+ rx_csr |= MUSB_RXCSR_H_WZC_BITS;
++ rx_csr &= ~MUSB_RXCSR_H_REQPKT;
++ musb_writew(epio, MUSB_RXCSR, rx_csr);
+ rx_csr &= ~MUSB_RXCSR_DATAERROR;
+ musb_writew(epio, MUSB_RXCSR, rx_csr);
+
+diff --git a/drivers/usb/usbip/usbip_common.c b/drivers/usb/usbip/usbip_common.c
+index facaaf003f19..e40da7759a0e 100644
+--- a/drivers/usb/usbip/usbip_common.c
++++ b/drivers/usb/usbip/usbip_common.c
+@@ -741,6 +741,17 @@ int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb)
+ if (!(size > 0))
+ return 0;
+
++ if (size > urb->transfer_buffer_length) {
++ /* should not happen, probably malicious packet */
++ if (ud->side == USBIP_STUB) {
++ usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
++ return 0;
++ } else {
++ usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
++ return -EPIPE;
++ }
++ }
++
+ ret = usbip_recv(ud->tcp_socket, urb->transfer_buffer, size);
+ if (ret != size) {
+ dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret);
+diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
+index d1e1e1704da1..44eb7c737ea2 100644
+--- a/drivers/video/fbdev/Kconfig
++++ b/drivers/video/fbdev/Kconfig
+@@ -2246,7 +2246,6 @@ config XEN_FBDEV_FRONTEND
+ select FB_SYS_IMAGEBLIT
+ select FB_SYS_FOPS
+ select FB_DEFERRED_IO
+- select INPUT_XEN_KBDDEV_FRONTEND if INPUT_MISC
+ select XEN_XENBUS_FRONTEND
+ default y
+ help
+diff --git a/drivers/video/fbdev/da8xx-fb.c b/drivers/video/fbdev/da8xx-fb.c
+index 0081725c6b5b..d00510029c93 100644
+--- a/drivers/video/fbdev/da8xx-fb.c
++++ b/drivers/video/fbdev/da8xx-fb.c
+@@ -209,8 +209,7 @@ static struct fb_videomode known_lcd_panels[] = {
+ .lower_margin = 2,
+ .hsync_len = 0,
+ .vsync_len = 0,
+- .sync = FB_SYNC_CLK_INVERT |
+- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
++ .sync = FB_SYNC_CLK_INVERT,
+ },
+ /* Sharp LK043T1DG01 */
+ [1] = {
+@@ -224,7 +223,7 @@ static struct fb_videomode known_lcd_panels[] = {
+ .lower_margin = 2,
+ .hsync_len = 41,
+ .vsync_len = 10,
+- .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
++ .sync = 0,
+ .flag = 0,
+ },
+ [2] = {
+@@ -239,7 +238,7 @@ static struct fb_videomode known_lcd_panels[] = {
+ .lower_margin = 10,
+ .hsync_len = 10,
+ .vsync_len = 10,
+- .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
++ .sync = 0,
+ .flag = 0,
+ },
+ [3] = {
+diff --git a/drivers/xen/xen-pciback/conf_space.c b/drivers/xen/xen-pciback/conf_space.c
+index 9c234209d8b5..47a4177b16d2 100644
+--- a/drivers/xen/xen-pciback/conf_space.c
++++ b/drivers/xen/xen-pciback/conf_space.c
+@@ -183,8 +183,7 @@ int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size,
+ field_start = OFFSET(cfg_entry);
+ field_end = OFFSET(cfg_entry) + field->size;
+
+- if ((req_start >= field_start && req_start < field_end)
+- || (req_end > field_start && req_end <= field_end)) {
++ if (req_end > field_start && field_end > req_start) {
+ err = conf_space_read(dev, cfg_entry, field_start,
+ &tmp_val);
+ if (err)
+@@ -230,8 +229,7 @@ int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size, u32 value)
+ field_start = OFFSET(cfg_entry);
+ field_end = OFFSET(cfg_entry) + field->size;
+
+- if ((req_start >= field_start && req_start < field_end)
+- || (req_end > field_start && req_end <= field_end)) {
++ if (req_end > field_start && field_end > req_start) {
+ tmp_val = 0;
+
+ err = xen_pcibk_config_read(dev, field_start,
+diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
+index 0f11ebc92f02..844c883a7169 100644
+--- a/fs/btrfs/ctree.c
++++ b/fs/btrfs/ctree.c
+@@ -1548,6 +1548,7 @@ noinline int btrfs_cow_block(struct btrfs_trans_handle *trans,
+ trans->transid, root->fs_info->generation);
+
+ if (!should_cow_block(trans, root, buf)) {
++ trans->dirty = true;
+ *cow_ret = buf;
+ return 0;
+ }
+@@ -2767,8 +2768,10 @@ again:
+ * then we don't want to set the path blocking,
+ * so we test it here
+ */
+- if (!should_cow_block(trans, root, b))
++ if (!should_cow_block(trans, root, b)) {
++ trans->dirty = true;
+ goto cow_done;
++ }
+
+ /*
+ * must have write locks on this node and the
+diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
+index d1ae1322648a..2771bc32dbd9 100644
+--- a/fs/btrfs/extent-tree.c
++++ b/fs/btrfs/extent-tree.c
+@@ -7504,7 +7504,7 @@ btrfs_init_new_buffer(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+ set_extent_dirty(&trans->transaction->dirty_pages, buf->start,
+ buf->start + buf->len - 1, GFP_NOFS);
+ }
+- trans->blocks_used++;
++ trans->dirty = true;
+ /* this returns a buffer locked for blocking */
+ return buf;
+ }
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index 43502247e176..2eca30adb3e3 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -1639,7 +1639,7 @@ static noinline int btrfs_ioctl_snap_create_transid(struct file *file,
+
+ src_inode = file_inode(src.file);
+ if (src_inode->i_sb != file_inode(file)->i_sb) {
+- btrfs_info(BTRFS_I(src_inode)->root->fs_info,
++ btrfs_info(BTRFS_I(file_inode(file))->root->fs_info,
+ "Snapshot src from another FS");
+ ret = -EXDEV;
+ } else if (!inode_owner_or_capable(src_inode)) {
+diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
+index 70734d89193a..a40b454aea44 100644
+--- a/fs/btrfs/super.c
++++ b/fs/btrfs/super.c
+@@ -262,7 +262,7 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
+ trans->aborted = errno;
+ /* Nothing used. The other threads that have joined this
+ * transaction may be able to continue. */
+- if (!trans->blocks_used && list_empty(&trans->new_bgs)) {
++ if (!trans->dirty && list_empty(&trans->new_bgs)) {
+ const char *errstr;
+
+ errstr = btrfs_decode_error(errno);
+diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
+index 00d18c2bdb0f..6d43b2ab183b 100644
+--- a/fs/btrfs/transaction.c
++++ b/fs/btrfs/transaction.c
+@@ -507,7 +507,6 @@ again:
+
+ h->transid = cur_trans->transid;
+ h->transaction = cur_trans;
+- h->blocks_used = 0;
+ h->bytes_reserved = 0;
+ h->root = root;
+ h->delayed_ref_updates = 0;
+diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
+index 0b24755596ba..4ce102be6d6b 100644
+--- a/fs/btrfs/transaction.h
++++ b/fs/btrfs/transaction.h
+@@ -105,7 +105,6 @@ struct btrfs_trans_handle {
+ u64 qgroup_reserved;
+ unsigned long use_count;
+ unsigned long blocks_reserved;
+- unsigned long blocks_used;
+ unsigned long delayed_ref_updates;
+ struct btrfs_transaction *transaction;
+ struct btrfs_block_rsv *block_rsv;
+@@ -115,6 +114,7 @@ struct btrfs_trans_handle {
+ bool allocating_chunk;
+ bool reloc_reserved;
+ bool sync;
++ bool dirty;
+ unsigned int type;
+ /*
+ * this root is only needed to validate that the root passed to
+diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
+index 5a53ac6b1e02..02b071bf3732 100644
+--- a/fs/cifs/cifs_unicode.c
++++ b/fs/cifs/cifs_unicode.c
+@@ -101,6 +101,12 @@ convert_sfm_char(const __u16 src_char, char *target)
+ case SFM_SLASH:
+ *target = '\\';
+ break;
++ case SFM_SPACE:
++ *target = ' ';
++ break;
++ case SFM_PERIOD:
++ *target = '.';
++ break;
+ default:
+ return false;
+ }
+@@ -404,7 +410,7 @@ static __le16 convert_to_sfu_char(char src_char)
+ return dest_char;
+ }
+
+-static __le16 convert_to_sfm_char(char src_char)
++static __le16 convert_to_sfm_char(char src_char, bool end_of_string)
+ {
+ __le16 dest_char;
+
+@@ -427,6 +433,18 @@ static __le16 convert_to_sfm_char(char src_char)
+ case '|':
+ dest_char = cpu_to_le16(SFM_PIPE);
+ break;
++ case '.':
++ if (end_of_string)
++ dest_char = cpu_to_le16(SFM_PERIOD);
++ else
++ dest_char = 0;
++ break;
++ case ' ':
++ if (end_of_string)
++ dest_char = cpu_to_le16(SFM_SPACE);
++ else
++ dest_char = 0;
++ break;
+ default:
+ dest_char = 0;
+ }
+@@ -469,9 +487,16 @@ cifsConvertToUTF16(__le16 *target, const char *source, int srclen,
+ /* see if we must remap this char */
+ if (map_chars == SFU_MAP_UNI_RSVD)
+ dst_char = convert_to_sfu_char(src_char);
+- else if (map_chars == SFM_MAP_UNI_RSVD)
+- dst_char = convert_to_sfm_char(src_char);
+- else
++ else if (map_chars == SFM_MAP_UNI_RSVD) {
++ bool end_of_string;
++
++ if (i == srclen - 1)
++ end_of_string = true;
++ else
++ end_of_string = false;
++
++ dst_char = convert_to_sfm_char(src_char, end_of_string);
++ } else
+ dst_char = 0;
+ /*
+ * FIXME: We can not handle remapping backslash (UNI_SLASH)
+diff --git a/fs/cifs/cifs_unicode.h b/fs/cifs/cifs_unicode.h
+index bdc52cb9a676..479bc0a941f3 100644
+--- a/fs/cifs/cifs_unicode.h
++++ b/fs/cifs/cifs_unicode.h
+@@ -64,6 +64,8 @@
+ #define SFM_LESSTHAN ((__u16) 0xF023)
+ #define SFM_PIPE ((__u16) 0xF027)
+ #define SFM_SLASH ((__u16) 0xF026)
++#define SFM_PERIOD ((__u16) 0xF028)
++#define SFM_SPACE ((__u16) 0xF029)
+
+ /*
+ * Mapping mechanism to use when one of the seven reserved characters is
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index de626b939811..17998d19b166 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -414,7 +414,9 @@ cifs_echo_request(struct work_struct *work)
+ * server->ops->need_neg() == true. Also, no need to ping if
+ * we got a response recently.
+ */
+- if (!server->ops->need_neg || server->ops->need_neg(server) ||
++
++ if (server->tcpStatus == CifsNeedReconnect ||
++ server->tcpStatus == CifsExiting || server->tcpStatus == CifsNew ||
+ (server->ops->can_echo && !server->ops->can_echo(server)) ||
+ time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
+ goto requeue_echo;
+diff --git a/fs/cifs/ntlmssp.h b/fs/cifs/ntlmssp.h
+index 848249fa120f..3079b38f0afb 100644
+--- a/fs/cifs/ntlmssp.h
++++ b/fs/cifs/ntlmssp.h
+@@ -133,6 +133,6 @@ typedef struct _AUTHENTICATE_MESSAGE {
+
+ int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, struct cifs_ses *ses);
+ void build_ntlmssp_negotiate_blob(unsigned char *pbuffer, struct cifs_ses *ses);
+-int build_ntlmssp_auth_blob(unsigned char *pbuffer, u16 *buflen,
++int build_ntlmssp_auth_blob(unsigned char **pbuffer, u16 *buflen,
+ struct cifs_ses *ses,
+ const struct nls_table *nls_cp);
+diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
+index 8ffda5084dbf..5f9229ddf335 100644
+--- a/fs/cifs/sess.c
++++ b/fs/cifs/sess.c
+@@ -364,19 +364,43 @@ void build_ntlmssp_negotiate_blob(unsigned char *pbuffer,
+ sec_blob->DomainName.MaximumLength = 0;
+ }
+
+-/* We do not malloc the blob, it is passed in pbuffer, because its
+- maximum possible size is fixed and small, making this approach cleaner.
+- This function returns the length of the data in the blob */
+-int build_ntlmssp_auth_blob(unsigned char *pbuffer,
++static int size_of_ntlmssp_blob(struct cifs_ses *ses)
++{
++ int sz = sizeof(AUTHENTICATE_MESSAGE) + ses->auth_key.len
++ - CIFS_SESS_KEY_SIZE + CIFS_CPHTXT_SIZE + 2;
++
++ if (ses->domainName)
++ sz += 2 * strnlen(ses->domainName, CIFS_MAX_DOMAINNAME_LEN);
++ else
++ sz += 2;
++
++ if (ses->user_name)
++ sz += 2 * strnlen(ses->user_name, CIFS_MAX_USERNAME_LEN);
++ else
++ sz += 2;
++
++ return sz;
++}
++
++int build_ntlmssp_auth_blob(unsigned char **pbuffer,
+ u16 *buflen,
+ struct cifs_ses *ses,
+ const struct nls_table *nls_cp)
+ {
+ int rc;
+- AUTHENTICATE_MESSAGE *sec_blob = (AUTHENTICATE_MESSAGE *)pbuffer;
++ AUTHENTICATE_MESSAGE *sec_blob;
+ __u32 flags;
+ unsigned char *tmp;
+
++ rc = setup_ntlmv2_rsp(ses, nls_cp);
++ if (rc) {
++ cifs_dbg(VFS, "Error %d during NTLMSSP authentication\n", rc);
++ *buflen = 0;
++ goto setup_ntlmv2_ret;
++ }
++ *pbuffer = kmalloc(size_of_ntlmssp_blob(ses), GFP_KERNEL);
++ sec_blob = (AUTHENTICATE_MESSAGE *)*pbuffer;
++
+ memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8);
+ sec_blob->MessageType = NtLmAuthenticate;
+
+@@ -391,7 +415,7 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
+ flags |= NTLMSSP_NEGOTIATE_KEY_XCH;
+ }
+
+- tmp = pbuffer + sizeof(AUTHENTICATE_MESSAGE);
++ tmp = *pbuffer + sizeof(AUTHENTICATE_MESSAGE);
+ sec_blob->NegotiateFlags = cpu_to_le32(flags);
+
+ sec_blob->LmChallengeResponse.BufferOffset =
+@@ -399,13 +423,9 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
+ sec_blob->LmChallengeResponse.Length = 0;
+ sec_blob->LmChallengeResponse.MaximumLength = 0;
+
+- sec_blob->NtChallengeResponse.BufferOffset = cpu_to_le32(tmp - pbuffer);
++ sec_blob->NtChallengeResponse.BufferOffset =
++ cpu_to_le32(tmp - *pbuffer);
+ if (ses->user_name != NULL) {
+- rc = setup_ntlmv2_rsp(ses, nls_cp);
+- if (rc) {
+- cifs_dbg(VFS, "Error %d during NTLMSSP authentication\n", rc);
+- goto setup_ntlmv2_ret;
+- }
+ memcpy(tmp, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
+ ses->auth_key.len - CIFS_SESS_KEY_SIZE);
+ tmp += ses->auth_key.len - CIFS_SESS_KEY_SIZE;
+@@ -423,7 +443,7 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
+ }
+
+ if (ses->domainName == NULL) {
+- sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer);
++ sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
+ sec_blob->DomainName.Length = 0;
+ sec_blob->DomainName.MaximumLength = 0;
+ tmp += 2;
+@@ -432,14 +452,14 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
+ len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName,
+ CIFS_MAX_USERNAME_LEN, nls_cp);
+ len *= 2; /* unicode is 2 bytes each */
+- sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer);
++ sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
+ sec_blob->DomainName.Length = cpu_to_le16(len);
+ sec_blob->DomainName.MaximumLength = cpu_to_le16(len);
+ tmp += len;
+ }
+
+ if (ses->user_name == NULL) {
+- sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer);
++ sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
+ sec_blob->UserName.Length = 0;
+ sec_blob->UserName.MaximumLength = 0;
+ tmp += 2;
+@@ -448,13 +468,13 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
+ len = cifs_strtoUTF16((__le16 *)tmp, ses->user_name,
+ CIFS_MAX_USERNAME_LEN, nls_cp);
+ len *= 2; /* unicode is 2 bytes each */
+- sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer);
++ sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
+ sec_blob->UserName.Length = cpu_to_le16(len);
+ sec_blob->UserName.MaximumLength = cpu_to_le16(len);
+ tmp += len;
+ }
+
+- sec_blob->WorkstationName.BufferOffset = cpu_to_le32(tmp - pbuffer);
++ sec_blob->WorkstationName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
+ sec_blob->WorkstationName.Length = 0;
+ sec_blob->WorkstationName.MaximumLength = 0;
+ tmp += 2;
+@@ -463,19 +483,19 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
+ (ses->ntlmssp->server_flags & NTLMSSP_NEGOTIATE_EXTENDED_SEC))
+ && !calc_seckey(ses)) {
+ memcpy(tmp, ses->ntlmssp->ciphertext, CIFS_CPHTXT_SIZE);
+- sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - pbuffer);
++ sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - *pbuffer);
+ sec_blob->SessionKey.Length = cpu_to_le16(CIFS_CPHTXT_SIZE);
+ sec_blob->SessionKey.MaximumLength =
+ cpu_to_le16(CIFS_CPHTXT_SIZE);
+ tmp += CIFS_CPHTXT_SIZE;
+ } else {
+- sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - pbuffer);
++ sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - *pbuffer);
+ sec_blob->SessionKey.Length = 0;
+ sec_blob->SessionKey.MaximumLength = 0;
+ }
+
++ *buflen = tmp - *pbuffer;
+ setup_ntlmv2_ret:
+- *buflen = tmp - pbuffer;
+ return rc;
+ }
+
+@@ -1266,7 +1286,7 @@ sess_auth_rawntlmssp_authenticate(struct sess_data *sess_data)
+ struct cifs_ses *ses = sess_data->ses;
+ __u16 bytes_remaining;
+ char *bcc_ptr;
+- char *ntlmsspblob = NULL;
++ unsigned char *ntlmsspblob = NULL;
+ u16 blob_len;
+
+ cifs_dbg(FYI, "rawntlmssp session setup authenticate phase\n");
+@@ -1279,19 +1299,7 @@ sess_auth_rawntlmssp_authenticate(struct sess_data *sess_data)
+ /* Build security blob before we assemble the request */
+ pSMB = (SESSION_SETUP_ANDX *)sess_data->iov[0].iov_base;
+ smb_buf = (struct smb_hdr *)pSMB;
+- /*
+- * 5 is an empirical value, large enough to hold
+- * authenticate message plus max 10 of av paris,
+- * domain, user, workstation names, flags, etc.
+- */
+- ntlmsspblob = kzalloc(5*sizeof(struct _AUTHENTICATE_MESSAGE),
+- GFP_KERNEL);
+- if (!ntlmsspblob) {
+- rc = -ENOMEM;
+- goto out;
+- }
+-
+- rc = build_ntlmssp_auth_blob(ntlmsspblob,
++ rc = build_ntlmssp_auth_blob(&ntlmsspblob,
+ &blob_len, ses, sess_data->nls_cp);
+ if (rc)
+ goto out_free_ntlmsspblob;
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 14e845e8996f..8f527c867f78 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -532,7 +532,7 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
+ u16 blob_length = 0;
+ struct key *spnego_key = NULL;
+ char *security_blob = NULL;
+- char *ntlmssp_blob = NULL;
++ unsigned char *ntlmssp_blob = NULL;
+ bool use_spnego = false; /* else use raw ntlmssp */
+
+ cifs_dbg(FYI, "Session Setup\n");
+@@ -657,13 +657,7 @@ ssetup_ntlmssp_authenticate:
+ iov[1].iov_len = blob_length;
+ } else if (phase == NtLmAuthenticate) {
+ req->hdr.SessionId = ses->Suid;
+- ntlmssp_blob = kzalloc(sizeof(struct _NEGOTIATE_MESSAGE) + 500,
+- GFP_KERNEL);
+- if (ntlmssp_blob == NULL) {
+- rc = -ENOMEM;
+- goto ssetup_exit;
+- }
+- rc = build_ntlmssp_auth_blob(ntlmssp_blob, &blob_length, ses,
++ rc = build_ntlmssp_auth_blob(&ntlmssp_blob, &blob_length, ses,
+ nls_cp);
+ if (rc) {
+ cifs_dbg(FYI, "build_ntlmssp_auth_blob failed %d\n",
+@@ -1632,6 +1626,33 @@ SMB2_echo(struct TCP_Server_Info *server)
+
+ cifs_dbg(FYI, "In echo request\n");
+
++ if (server->tcpStatus == CifsNeedNegotiate) {
++ struct list_head *tmp, *tmp2;
++ struct cifs_ses *ses;
++ struct cifs_tcon *tcon;
++
++ cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n");
++ spin_lock(&cifs_tcp_ses_lock);
++ list_for_each(tmp, &server->smb_ses_list) {
++ ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
++ list_for_each(tmp2, &ses->tcon_list) {
++ tcon = list_entry(tmp2, struct cifs_tcon,
++ tcon_list);
++ /* add check for persistent handle reconnect */
++ if (tcon && tcon->need_reconnect) {
++ spin_unlock(&cifs_tcp_ses_lock);
++ rc = smb2_reconnect(SMB2_ECHO, tcon);
++ spin_lock(&cifs_tcp_ses_lock);
++ }
++ }
++ }
++ spin_unlock(&cifs_tcp_ses_lock);
++ }
++
++ /* if no session, renegotiate failed above */
++ if (server->tcpStatus == CifsNeedNegotiate)
++ return -EIO;
++
+ rc = small_smb2_init(SMB2_ECHO, NULL, (void **)&req);
+ if (rc)
+ return rc;
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index f43996884242..ba12e2953aec 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -5094,6 +5094,8 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
+ might_sleep();
+ trace_ext4_mark_inode_dirty(inode, _RET_IP_);
+ err = ext4_reserve_inode_write(handle, inode, &iloc);
++ if (err)
++ return err;
+ if (ext4_handle_valid(handle) &&
+ EXT4_I(inode)->i_extra_isize < sbi->s_want_extra_isize &&
+ !ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND)) {
+@@ -5124,9 +5126,7 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
+ }
+ }
+ }
+- if (!err)
+- err = ext4_mark_iloc_dirty(handle, inode, &iloc);
+- return err;
++ return ext4_mark_iloc_dirty(handle, inode, &iloc);
+ }
+
+ /*
+diff --git a/fs/locks.c b/fs/locks.c
+index 8501eecb2af0..3c234b9fbdd9 100644
+--- a/fs/locks.c
++++ b/fs/locks.c
+@@ -1596,7 +1596,7 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr
+ {
+ struct file_lock *fl, *my_fl = NULL, *lease;
+ struct dentry *dentry = filp->f_path.dentry;
+- struct inode *inode = dentry->d_inode;
++ struct inode *inode = file_inode(filp);
+ struct file_lock_context *ctx;
+ bool is_deleg = (*flp)->fl_flags & FL_DELEG;
+ int error;
+diff --git a/fs/namespace.c b/fs/namespace.c
+index 6257268147ee..556721fb0cf6 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -1551,6 +1551,7 @@ void __detach_mounts(struct dentry *dentry)
+ goto out_unlock;
+
+ lock_mount_hash();
++ event++;
+ while (!hlist_empty(&mp->m_list)) {
+ mnt = hlist_entry(mp->m_list.first, struct mount, mnt_mp_list);
+ if (mnt->mnt.mnt_flags & MNT_UMOUNT) {
+diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
+index b2c8b31b2be7..aadb4af4a0fe 100644
+--- a/fs/nfs/dir.c
++++ b/fs/nfs/dir.c
+@@ -1542,9 +1542,9 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
+ err = PTR_ERR(inode);
+ trace_nfs_atomic_open_exit(dir, ctx, open_flags, err);
+ put_nfs_open_context(ctx);
++ d_drop(dentry);
+ switch (err) {
+ case -ENOENT:
+- d_drop(dentry);
+ d_add(dentry, NULL);
+ nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
+ break;
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index 84706204cc33..eef16ec0638a 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -2715,12 +2715,11 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
+ call_close |= is_wronly;
+ else if (is_wronly)
+ calldata->arg.fmode |= FMODE_WRITE;
++ if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE))
++ call_close |= is_rdwr;
+ } else if (is_rdwr)
+ calldata->arg.fmode |= FMODE_READ|FMODE_WRITE;
+
+- if (calldata->arg.fmode == 0)
+- call_close |= is_rdwr;
+-
+ if (!nfs4_valid_open_stateid(state))
+ call_close = 0;
+ spin_unlock(&state->owner->so_lock);
+diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c
+index 1705c78ee2d8..19c1bcf70e3e 100644
+--- a/fs/nfs/pnfs_nfs.c
++++ b/fs/nfs/pnfs_nfs.c
+@@ -124,11 +124,12 @@ pnfs_generic_scan_ds_commit_list(struct pnfs_commit_bucket *bucket,
+ if (ret) {
+ cinfo->ds->nwritten -= ret;
+ cinfo->ds->ncommitting += ret;
+- bucket->clseg = bucket->wlseg;
+- if (list_empty(src))
++ if (bucket->clseg == NULL)
++ bucket->clseg = pnfs_get_lseg(bucket->wlseg);
++ if (list_empty(src)) {
++ pnfs_put_lseg_locked(bucket->wlseg);
+ bucket->wlseg = NULL;
+- else
+- pnfs_get_lseg(bucket->clseg);
++ }
+ }
+ return ret;
+ }
+@@ -182,19 +183,23 @@ static void pnfs_generic_retry_commit(struct nfs_commit_info *cinfo, int idx)
+ struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
+ struct pnfs_commit_bucket *bucket;
+ struct pnfs_layout_segment *freeme;
++ LIST_HEAD(pages);
+ int i;
+
++ spin_lock(cinfo->lock);
+ for (i = idx; i < fl_cinfo->nbuckets; i++) {
+ bucket = &fl_cinfo->buckets[i];
+ if (list_empty(&bucket->committing))
+ continue;
+- nfs_retry_commit(&bucket->committing, bucket->clseg, cinfo, i);
+- spin_lock(cinfo->lock);
+ freeme = bucket->clseg;
+ bucket->clseg = NULL;
++ list_splice_init(&bucket->committing, &pages);
+ spin_unlock(cinfo->lock);
++ nfs_retry_commit(&pages, freeme, cinfo, i);
+ pnfs_put_lseg(freeme);
++ spin_lock(cinfo->lock);
+ }
++ spin_unlock(cinfo->lock);
+ }
+
+ static unsigned int
+@@ -216,10 +221,6 @@ pnfs_generic_alloc_ds_commits(struct nfs_commit_info *cinfo,
+ if (!data)
+ break;
+ data->ds_commit_index = i;
+- spin_lock(cinfo->lock);
+- data->lseg = bucket->clseg;
+- bucket->clseg = NULL;
+- spin_unlock(cinfo->lock);
+ list_add(&data->pages, list);
+ nreq++;
+ }
+@@ -229,6 +230,47 @@ pnfs_generic_alloc_ds_commits(struct nfs_commit_info *cinfo,
+ return nreq;
+ }
+
++static inline
++void pnfs_fetch_commit_bucket_list(struct list_head *pages,
++ struct nfs_commit_data *data,
++ struct nfs_commit_info *cinfo)
++{
++ struct pnfs_commit_bucket *bucket;
++
++ bucket = &cinfo->ds->buckets[data->ds_commit_index];
++ spin_lock(cinfo->lock);
++ list_splice_init(pages, &bucket->committing);
++ data->lseg = bucket->clseg;
++ bucket->clseg = NULL;
++ spin_unlock(cinfo->lock);
++
++}
++
++/* Helper function for pnfs_generic_commit_pagelist to catch an empty
++ * page list. This can happen when two commits race.
++ *
++ * This must be called instead of nfs_init_commit - call one or the other, but
++ * not both!
++ */
++static bool
++pnfs_generic_commit_cancel_empty_pagelist(struct list_head *pages,
++ struct nfs_commit_data *data,
++ struct nfs_commit_info *cinfo)
++{
++ if (list_empty(pages)) {
++ if (atomic_dec_and_test(&cinfo->mds->rpcs_out))
++ wake_up_atomic_t(&cinfo->mds->rpcs_out);
++ /* don't call nfs_commitdata_release - it tries to put
++ * the open_context which is not acquired until nfs_init_commit
++ * which has not been called on @data */
++ WARN_ON_ONCE(data->context);
++ nfs_commit_free(data);
++ return true;
++ }
++
++ return false;
++}
++
+ /* This follows nfs_commit_list pretty closely */
+ int
+ pnfs_generic_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
+@@ -243,7 +285,7 @@ pnfs_generic_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
+ if (!list_empty(mds_pages)) {
+ data = nfs_commitdata_alloc();
+ if (data != NULL) {
+- data->lseg = NULL;
++ data->ds_commit_index = -1;
+ list_add(&data->pages, &list);
+ nreq++;
+ } else {
+@@ -265,19 +307,27 @@ pnfs_generic_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
+
+ list_for_each_entry_safe(data, tmp, &list, pages) {
+ list_del_init(&data->pages);
+- if (!data->lseg) {
++ if (data->ds_commit_index < 0) {
++ /* another commit raced with us */
++ if (pnfs_generic_commit_cancel_empty_pagelist(mds_pages,
++ data, cinfo))
++ continue;
++
+ nfs_init_commit(data, mds_pages, NULL, cinfo);
+ nfs_initiate_commit(NFS_CLIENT(inode), data,
+ NFS_PROTO(data->inode),
+ data->mds_ops, how, 0);
+ } else {
+- struct pnfs_commit_bucket *buckets;
++ LIST_HEAD(pages);
++
++ pnfs_fetch_commit_bucket_list(&pages, data, cinfo);
++
++ /* another commit raced with us */
++ if (pnfs_generic_commit_cancel_empty_pagelist(&pages,
++ data, cinfo))
++ continue;
+
+- buckets = cinfo->ds->buckets;
+- nfs_init_commit(data,
+- &buckets[data->ds_commit_index].committing,
+- data->lseg,
+- cinfo);
++ nfs_init_commit(data, &pages, data->lseg, cinfo);
+ initiate_commit(data, how);
+ }
+ }
+diff --git a/fs/nfs/write.c b/fs/nfs/write.c
+index d9851a6a2813..f98cd9adbc0d 100644
+--- a/fs/nfs/write.c
++++ b/fs/nfs/write.c
+@@ -1653,6 +1653,10 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how,
+ {
+ struct nfs_commit_data *data;
+
++ /* another commit raced with us */
++ if (list_empty(head))
++ return 0;
++
+ data = nfs_commitdata_alloc();
+
+ if (!data)
+diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
+index 5694cfb7a47b..29c4bff1e6e1 100644
+--- a/fs/nfsd/nfs4callback.c
++++ b/fs/nfsd/nfs4callback.c
+@@ -710,22 +710,6 @@ static struct rpc_cred *get_backchannel_cred(struct nfs4_client *clp, struct rpc
+ }
+ }
+
+-static struct rpc_clnt *create_backchannel_client(struct rpc_create_args *args)
+-{
+- struct rpc_xprt *xprt;
+-
+- if (args->protocol != XPRT_TRANSPORT_BC_TCP)
+- return rpc_create(args);
+-
+- xprt = args->bc_xprt->xpt_bc_xprt;
+- if (xprt) {
+- xprt_get(xprt);
+- return rpc_create_xprt(args, xprt);
+- }
+-
+- return rpc_create(args);
+-}
+-
+ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn, struct nfsd4_session *ses)
+ {
+ int maxtime = max_cb_time(clp->net);
+@@ -768,7 +752,7 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c
+ args.authflavor = ses->se_cb_sec.flavor;
+ }
+ /* Create RPC client */
+- client = create_backchannel_client(&args);
++ client = rpc_create(&args);
+ if (IS_ERR(client)) {
+ dprintk("NFSD: couldn't create callback client: %ld\n",
+ PTR_ERR(client));
+diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
+index 69bd801afb53..37e49cb2ac4c 100644
+--- a/fs/nilfs2/the_nilfs.c
++++ b/fs/nilfs2/the_nilfs.c
+@@ -443,7 +443,7 @@ static int nilfs_valid_sb(struct nilfs_super_block *sbp)
+ if (!sbp || le16_to_cpu(sbp->s_magic) != NILFS_SUPER_MAGIC)
+ return 0;
+ bytes = le16_to_cpu(sbp->s_bytes);
+- if (bytes > BLOCK_SIZE)
++ if (bytes < sumoff + 4 || bytes > BLOCK_SIZE)
+ return 0;
+ crc = crc32_le(le32_to_cpu(sbp->s_crc_seed), (unsigned char *)sbp,
+ sumoff);
+diff --git a/fs/pipe.c b/fs/pipe.c
+index 8865f7963700..5916c19dbb02 100644
+--- a/fs/pipe.c
++++ b/fs/pipe.c
+@@ -38,6 +38,12 @@ unsigned int pipe_max_size = 1048576;
+ */
+ unsigned int pipe_min_size = PAGE_SIZE;
+
++/* Maximum allocatable pages per user. Hard limit is unset by default, soft
++ * matches default values.
++ */
++unsigned long pipe_user_pages_hard;
++unsigned long pipe_user_pages_soft = PIPE_DEF_BUFFERS * INR_OPEN_CUR;
++
+ /*
+ * We use a start+len construction, which provides full use of the
+ * allocated memory.
+@@ -584,20 +590,49 @@ pipe_fasync(int fd, struct file *filp, int on)
+ return retval;
+ }
+
++static void account_pipe_buffers(struct pipe_inode_info *pipe,
++ unsigned long old, unsigned long new)
++{
++ atomic_long_add(new - old, &pipe->user->pipe_bufs);
++}
++
++static bool too_many_pipe_buffers_soft(struct user_struct *user)
++{
++ return pipe_user_pages_soft &&
++ atomic_long_read(&user->pipe_bufs) >= pipe_user_pages_soft;
++}
++
++static bool too_many_pipe_buffers_hard(struct user_struct *user)
++{
++ return pipe_user_pages_hard &&
++ atomic_long_read(&user->pipe_bufs) >= pipe_user_pages_hard;
++}
++
+ struct pipe_inode_info *alloc_pipe_info(void)
+ {
+ struct pipe_inode_info *pipe;
+
+ pipe = kzalloc(sizeof(struct pipe_inode_info), GFP_KERNEL);
+ if (pipe) {
+- pipe->bufs = kzalloc(sizeof(struct pipe_buffer) * PIPE_DEF_BUFFERS, GFP_KERNEL);
++ unsigned long pipe_bufs = PIPE_DEF_BUFFERS;
++ struct user_struct *user = get_current_user();
++
++ if (!too_many_pipe_buffers_hard(user)) {
++ if (too_many_pipe_buffers_soft(user))
++ pipe_bufs = 1;
++ pipe->bufs = kzalloc(sizeof(struct pipe_buffer) * pipe_bufs, GFP_KERNEL);
++ }
++
+ if (pipe->bufs) {
+ init_waitqueue_head(&pipe->wait);
+ pipe->r_counter = pipe->w_counter = 1;
+- pipe->buffers = PIPE_DEF_BUFFERS;
++ pipe->buffers = pipe_bufs;
++ pipe->user = user;
++ account_pipe_buffers(pipe, 0, pipe_bufs);
+ mutex_init(&pipe->mutex);
+ return pipe;
+ }
++ free_uid(user);
+ kfree(pipe);
+ }
+
+@@ -608,6 +643,8 @@ void free_pipe_info(struct pipe_inode_info *pipe)
+ {
+ int i;
+
++ account_pipe_buffers(pipe, pipe->buffers, 0);
++ free_uid(pipe->user);
+ for (i = 0; i < pipe->buffers; i++) {
+ struct pipe_buffer *buf = pipe->bufs + i;
+ if (buf->ops)
+@@ -996,6 +1033,7 @@ static long pipe_set_size(struct pipe_inode_info *pipe, unsigned long nr_pages)
+ memcpy(bufs + head, pipe->bufs, tail * sizeof(struct pipe_buffer));
+ }
+
++ account_pipe_buffers(pipe, pipe->buffers, nr_pages);
+ pipe->curbuf = 0;
+ kfree(pipe->bufs);
+ pipe->bufs = bufs;
+@@ -1067,6 +1105,11 @@ long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
+ if (!capable(CAP_SYS_RESOURCE) && size > pipe_max_size) {
+ ret = -EPERM;
+ goto out;
++ } else if ((too_many_pipe_buffers_hard(pipe->user) ||
++ too_many_pipe_buffers_soft(pipe->user)) &&
++ !capable(CAP_SYS_RESOURCE) && !capable(CAP_SYS_ADMIN)) {
++ ret = -EPERM;
++ goto out;
+ }
+ ret = pipe_set_size(pipe, nr_pages);
+ break;
+diff --git a/fs/proc/base.c b/fs/proc/base.c
+index 68d51ed1666f..239dca3fb676 100644
+--- a/fs/proc/base.c
++++ b/fs/proc/base.c
+@@ -759,7 +759,8 @@ static ssize_t environ_read(struct file *file, char __user *buf,
+ int ret = 0;
+ struct mm_struct *mm = file->private_data;
+
+- if (!mm)
++ /* Ensure the process spawned far enough to have an environment. */
++ if (!mm || !mm->env_end)
+ return 0;
+
+ page = (char *)__get_free_page(GFP_TEMPORARY);
+diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
+index 35efc103c39c..75e9b2db14ab 100644
+--- a/fs/ubifs/file.c
++++ b/fs/ubifs/file.c
+@@ -53,6 +53,7 @@
+ #include <linux/mount.h>
+ #include <linux/namei.h>
+ #include <linux/slab.h>
++#include <linux/migrate.h>
+
+ static int read_block(struct inode *inode, void *addr, unsigned int block,
+ struct ubifs_data_node *dn)
+@@ -1420,6 +1421,26 @@ static int ubifs_set_page_dirty(struct page *page)
+ return ret;
+ }
+
++#ifdef CONFIG_MIGRATION
++static int ubifs_migrate_page(struct address_space *mapping,
++ struct page *newpage, struct page *page, enum migrate_mode mode)
++{
++ int rc;
++
++ rc = migrate_page_move_mapping(mapping, newpage, page, NULL, mode, 0);
++ if (rc != MIGRATEPAGE_SUCCESS)
++ return rc;
++
++ if (PagePrivate(page)) {
++ ClearPagePrivate(page);
++ SetPagePrivate(newpage);
++ }
++
++ migrate_page_copy(newpage, page);
++ return MIGRATEPAGE_SUCCESS;
++}
++#endif
++
+ static int ubifs_releasepage(struct page *page, gfp_t unused_gfp_flags)
+ {
+ /*
+@@ -1556,6 +1577,9 @@ const struct address_space_operations ubifs_file_address_operations = {
+ .write_end = ubifs_write_end,
+ .invalidatepage = ubifs_invalidatepage,
+ .set_page_dirty = ubifs_set_page_dirty,
++#ifdef CONFIG_MIGRATION
++ .migratepage = ubifs_migrate_page,
++#endif
+ .releasepage = ubifs_releasepage,
+ };
+
+diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
+index 516162be1398..e1b1c8278294 100644
+--- a/fs/xfs/libxfs/xfs_alloc.c
++++ b/fs/xfs/libxfs/xfs_alloc.c
+@@ -519,6 +519,7 @@ xfs_agfl_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_agfl_buf_ops = {
++ .name = "xfs_agfl",
+ .verify_read = xfs_agfl_read_verify,
+ .verify_write = xfs_agfl_write_verify,
+ };
+@@ -2276,6 +2277,7 @@ xfs_agf_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_agf_buf_ops = {
++ .name = "xfs_agf",
+ .verify_read = xfs_agf_read_verify,
+ .verify_write = xfs_agf_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_alloc_btree.c b/fs/xfs/libxfs/xfs_alloc_btree.c
+index 59d521c09a17..13629ad8a60c 100644
+--- a/fs/xfs/libxfs/xfs_alloc_btree.c
++++ b/fs/xfs/libxfs/xfs_alloc_btree.c
+@@ -379,6 +379,7 @@ xfs_allocbt_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_allocbt_buf_ops = {
++ .name = "xfs_allocbt",
+ .verify_read = xfs_allocbt_read_verify,
+ .verify_write = xfs_allocbt_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
+index e9d401ce93bb..0532561a6010 100644
+--- a/fs/xfs/libxfs/xfs_attr_leaf.c
++++ b/fs/xfs/libxfs/xfs_attr_leaf.c
+@@ -325,6 +325,7 @@ xfs_attr3_leaf_read_verify(
+ }
+
+ const struct xfs_buf_ops xfs_attr3_leaf_buf_ops = {
++ .name = "xfs_attr3_leaf",
+ .verify_read = xfs_attr3_leaf_read_verify,
+ .verify_write = xfs_attr3_leaf_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
+index dd714037c322..c3db53d1bdb3 100644
+--- a/fs/xfs/libxfs/xfs_attr_remote.c
++++ b/fs/xfs/libxfs/xfs_attr_remote.c
+@@ -201,6 +201,7 @@ xfs_attr3_rmt_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_attr3_rmt_buf_ops = {
++ .name = "xfs_attr3_rmt",
+ .verify_read = xfs_attr3_rmt_read_verify,
+ .verify_write = xfs_attr3_rmt_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c
+index 2c44c8e50782..225f2a8c0436 100644
+--- a/fs/xfs/libxfs/xfs_bmap_btree.c
++++ b/fs/xfs/libxfs/xfs_bmap_btree.c
+@@ -719,6 +719,7 @@ xfs_bmbt_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_bmbt_buf_ops = {
++ .name = "xfs_bmbt",
+ .verify_read = xfs_bmbt_read_verify,
+ .verify_write = xfs_bmbt_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c
+index 2385f8cd08ab..5d1827056efb 100644
+--- a/fs/xfs/libxfs/xfs_da_btree.c
++++ b/fs/xfs/libxfs/xfs_da_btree.c
+@@ -241,6 +241,7 @@ xfs_da3_node_read_verify(
+ }
+
+ const struct xfs_buf_ops xfs_da3_node_buf_ops = {
++ .name = "xfs_da3_node",
+ .verify_read = xfs_da3_node_read_verify,
+ .verify_write = xfs_da3_node_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c
+index 9354e190b82e..a02ee011c8da 100644
+--- a/fs/xfs/libxfs/xfs_dir2_block.c
++++ b/fs/xfs/libxfs/xfs_dir2_block.c
+@@ -120,6 +120,7 @@ xfs_dir3_block_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_dir3_block_buf_ops = {
++ .name = "xfs_dir3_block",
+ .verify_read = xfs_dir3_block_read_verify,
+ .verify_write = xfs_dir3_block_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_dir2_data.c b/fs/xfs/libxfs/xfs_dir2_data.c
+index 534bbf283d6b..e020a2c3a73f 100644
+--- a/fs/xfs/libxfs/xfs_dir2_data.c
++++ b/fs/xfs/libxfs/xfs_dir2_data.c
+@@ -302,11 +302,13 @@ xfs_dir3_data_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_dir3_data_buf_ops = {
++ .name = "xfs_dir3_data",
+ .verify_read = xfs_dir3_data_read_verify,
+ .verify_write = xfs_dir3_data_write_verify,
+ };
+
+ static const struct xfs_buf_ops xfs_dir3_data_reada_buf_ops = {
++ .name = "xfs_dir3_data_reada",
+ .verify_read = xfs_dir3_data_reada_verify,
+ .verify_write = xfs_dir3_data_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_dir2_leaf.c b/fs/xfs/libxfs/xfs_dir2_leaf.c
+index 106119955400..eb66ae07428a 100644
+--- a/fs/xfs/libxfs/xfs_dir2_leaf.c
++++ b/fs/xfs/libxfs/xfs_dir2_leaf.c
+@@ -242,11 +242,13 @@ xfs_dir3_leafn_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops = {
++ .name = "xfs_dir3_leaf1",
+ .verify_read = xfs_dir3_leaf1_read_verify,
+ .verify_write = xfs_dir3_leaf1_write_verify,
+ };
+
+ const struct xfs_buf_ops xfs_dir3_leafn_buf_ops = {
++ .name = "xfs_dir3_leafn",
+ .verify_read = xfs_dir3_leafn_read_verify,
+ .verify_write = xfs_dir3_leafn_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
+index 06bb4218b362..f6e591edbb98 100644
+--- a/fs/xfs/libxfs/xfs_dir2_node.c
++++ b/fs/xfs/libxfs/xfs_dir2_node.c
+@@ -147,6 +147,7 @@ xfs_dir3_free_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_dir3_free_buf_ops = {
++ .name = "xfs_dir3_free",
+ .verify_read = xfs_dir3_free_read_verify,
+ .verify_write = xfs_dir3_free_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_dquot_buf.c b/fs/xfs/libxfs/xfs_dquot_buf.c
+index 48aff071591d..f48c3040c9ce 100644
+--- a/fs/xfs/libxfs/xfs_dquot_buf.c
++++ b/fs/xfs/libxfs/xfs_dquot_buf.c
+@@ -301,6 +301,7 @@ xfs_dquot_buf_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_dquot_buf_ops = {
++ .name = "xfs_dquot",
+ .verify_read = xfs_dquot_buf_read_verify,
+ .verify_write = xfs_dquot_buf_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
+index 1c9e75521250..fe20c2670f6c 100644
+--- a/fs/xfs/libxfs/xfs_ialloc.c
++++ b/fs/xfs/libxfs/xfs_ialloc.c
+@@ -2117,6 +2117,7 @@ xfs_agi_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_agi_buf_ops = {
++ .name = "xfs_agi",
+ .verify_read = xfs_agi_read_verify,
+ .verify_write = xfs_agi_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.c b/fs/xfs/libxfs/xfs_ialloc_btree.c
+index 964c465ca69c..216a6f0997f6 100644
+--- a/fs/xfs/libxfs/xfs_ialloc_btree.c
++++ b/fs/xfs/libxfs/xfs_ialloc_btree.c
+@@ -295,6 +295,7 @@ xfs_inobt_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_inobt_buf_ops = {
++ .name = "xfs_inobt",
+ .verify_read = xfs_inobt_read_verify,
+ .verify_write = xfs_inobt_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
+index 7da6d0b2c2ed..a217176fde65 100644
+--- a/fs/xfs/libxfs/xfs_inode_buf.c
++++ b/fs/xfs/libxfs/xfs_inode_buf.c
+@@ -138,11 +138,13 @@ xfs_inode_buf_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_inode_buf_ops = {
++ .name = "xfs_inode",
+ .verify_read = xfs_inode_buf_read_verify,
+ .verify_write = xfs_inode_buf_write_verify,
+ };
+
+ const struct xfs_buf_ops xfs_inode_buf_ra_ops = {
++ .name = "xxfs_inode_ra",
+ .verify_read = xfs_inode_buf_readahead_verify,
+ .verify_write = xfs_inode_buf_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
+index dc4bfc5d88fc..535bd843f2f4 100644
+--- a/fs/xfs/libxfs/xfs_sb.c
++++ b/fs/xfs/libxfs/xfs_sb.c
+@@ -637,11 +637,13 @@ xfs_sb_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_sb_buf_ops = {
++ .name = "xfs_sb",
+ .verify_read = xfs_sb_read_verify,
+ .verify_write = xfs_sb_write_verify,
+ };
+
+ const struct xfs_buf_ops xfs_sb_quiet_buf_ops = {
++ .name = "xfs_sb_quiet",
+ .verify_read = xfs_sb_quiet_read_verify,
+ .verify_write = xfs_sb_write_verify,
+ };
+diff --git a/fs/xfs/libxfs/xfs_symlink_remote.c b/fs/xfs/libxfs/xfs_symlink_remote.c
+index e7e26bd6468f..4caff91ced51 100644
+--- a/fs/xfs/libxfs/xfs_symlink_remote.c
++++ b/fs/xfs/libxfs/xfs_symlink_remote.c
+@@ -164,6 +164,7 @@ xfs_symlink_write_verify(
+ }
+
+ const struct xfs_buf_ops xfs_symlink_buf_ops = {
++ .name = "xfs_symlink",
+ .verify_read = xfs_symlink_read_verify,
+ .verify_write = xfs_symlink_write_verify,
+ };
+diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h
+index 75ff5d5a7d2e..110cb85e04f3 100644
+--- a/fs/xfs/xfs_buf.h
++++ b/fs/xfs/xfs_buf.h
+@@ -131,6 +131,7 @@ struct xfs_buf_map {
+ struct xfs_buf_map (map) = { .bm_bn = (blkno), .bm_len = (numblk) };
+
+ struct xfs_buf_ops {
++ char *name;
+ void (*verify_read)(struct xfs_buf *);
+ void (*verify_write)(struct xfs_buf *);
+ };
+diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
+index 338e50bbfd1e..63db1cc2091a 100644
+--- a/fs/xfs/xfs_error.c
++++ b/fs/xfs/xfs_error.c
+@@ -164,9 +164,9 @@ xfs_verifier_error(
+ {
+ struct xfs_mount *mp = bp->b_target->bt_mount;
+
+- xfs_alert(mp, "Metadata %s detected at %pF, block 0x%llx",
++ xfs_alert(mp, "Metadata %s detected at %pF, %s block 0x%llx",
+ bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
+- __return_address, bp->b_bn);
++ __return_address, bp->b_ops->name, bp->b_bn);
+
+ xfs_alert(mp, "Unmount and run xfs_repair");
+
+diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
+index 51cc1deb7af3..30c8971bc615 100644
+--- a/include/linux/device-mapper.h
++++ b/include/linux/device-mapper.h
+@@ -127,6 +127,8 @@ struct dm_dev {
+ char name[16];
+ };
+
++dev_t dm_get_dev_t(const char *path);
++
+ /*
+ * Constructors should call these functions to ensure destination devices
+ * are opened/closed correctly.
+diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
+index 05b9a694e213..6c86c7edafa7 100644
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -265,6 +265,7 @@ struct header_ops {
+ void (*cache_update)(struct hh_cache *hh,
+ const struct net_device *dev,
+ const unsigned char *haddr);
++ bool (*validate)(const char *ll_header, unsigned int len);
+ };
+
+ /* These flag bits are private to the generic network queueing
+@@ -1372,7 +1373,7 @@ enum netdev_priv_flags {
+ * @dma: DMA channel
+ * @mtu: Interface MTU value
+ * @type: Interface hardware type
+- * @hard_header_len: Hardware header length
++ * @hard_header_len: Maximum hardware header length.
+ *
+ * @needed_headroom: Extra headroom the hardware may need, but not in all
+ * cases can this be guaranteed
+@@ -2416,6 +2417,24 @@ static inline int dev_parse_header(const struct sk_buff *skb,
+ return dev->header_ops->parse(skb, haddr);
+ }
+
++/* ll_header must have at least hard_header_len allocated */
++static inline bool dev_validate_header(const struct net_device *dev,
++ char *ll_header, int len)
++{
++ if (likely(len >= dev->hard_header_len))
++ return true;
++
++ if (capable(CAP_SYS_RAWIO)) {
++ memset(ll_header + len, 0, dev->hard_header_len - len);
++ return true;
++ }
++
++ if (dev->header_ops && dev->header_ops->validate)
++ return dev->header_ops->validate(ll_header, len);
++
++ return false;
++}
++
+ typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
+ int register_gifconf(unsigned int family, gifconf_func_t *gifconf);
+ static inline int unregister_gifconf(unsigned int family)
+diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
+index a3e215bb0241..7741efa43b35 100644
+--- a/include/linux/netfilter/x_tables.h
++++ b/include/linux/netfilter/x_tables.h
+@@ -239,11 +239,18 @@ void xt_unregister_match(struct xt_match *target);
+ int xt_register_matches(struct xt_match *match, unsigned int n);
+ void xt_unregister_matches(struct xt_match *match, unsigned int n);
+
++int xt_check_entry_offsets(const void *base, const char *elems,
++ unsigned int target_offset,
++ unsigned int next_offset);
++
+ int xt_check_match(struct xt_mtchk_param *, unsigned int size, u_int8_t proto,
+ bool inv_proto);
+ int xt_check_target(struct xt_tgchk_param *, unsigned int size, u_int8_t proto,
+ bool inv_proto);
+
++void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
++ struct xt_counters_info *info, bool compat);
++
+ struct xt_table *xt_register_table(struct net *net,
+ const struct xt_table *table,
+ struct xt_table_info *bootstrap,
+@@ -421,7 +428,7 @@ void xt_compat_init_offsets(u_int8_t af, unsigned int number);
+ int xt_compat_calc_jump(u_int8_t af, unsigned int offset);
+
+ int xt_compat_match_offset(const struct xt_match *match);
+-int xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,
++void xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,
+ unsigned int *size);
+ int xt_compat_match_to_user(const struct xt_entry_match *m,
+ void __user **dstptr, unsigned int *size);
+@@ -431,6 +438,9 @@ void xt_compat_target_from_user(struct xt_entry_target *t, void **dstptr,
+ unsigned int *size);
+ int xt_compat_target_to_user(const struct xt_entry_target *t,
+ void __user **dstptr, unsigned int *size);
++int xt_compat_check_entry_offsets(const void *base, const char *elems,
++ unsigned int target_offset,
++ unsigned int next_offset);
+
+ #endif /* CONFIG_COMPAT */
+ #endif /* _X_TABLES_H */
+diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
+index eb8b8ac6df3c..24f5470d3944 100644
+--- a/include/linux/pipe_fs_i.h
++++ b/include/linux/pipe_fs_i.h
+@@ -42,6 +42,7 @@ struct pipe_buffer {
+ * @fasync_readers: reader side fasync
+ * @fasync_writers: writer side fasync
+ * @bufs: the circular array of pipe buffers
++ * @user: the user who created this pipe
+ **/
+ struct pipe_inode_info {
+ struct mutex mutex;
+@@ -57,6 +58,7 @@ struct pipe_inode_info {
+ struct fasync_struct *fasync_readers;
+ struct fasync_struct *fasync_writers;
+ struct pipe_buffer *bufs;
++ struct user_struct *user;
+ };
+
+ /*
+@@ -123,6 +125,8 @@ void pipe_unlock(struct pipe_inode_info *);
+ void pipe_double_lock(struct pipe_inode_info *, struct pipe_inode_info *);
+
+ extern unsigned int pipe_max_size, pipe_min_size;
++extern unsigned long pipe_user_pages_hard;
++extern unsigned long pipe_user_pages_soft;
+ int pipe_proc_fn(struct ctl_table *, int, void __user *, size_t *, loff_t *);
+
+
+diff --git a/include/linux/platform_data/asoc-s3c.h b/include/linux/platform_data/asoc-s3c.h
+index 5e0bc779e6c5..33f88b4479e4 100644
+--- a/include/linux/platform_data/asoc-s3c.h
++++ b/include/linux/platform_data/asoc-s3c.h
+@@ -39,6 +39,10 @@ struct samsung_i2s {
+ */
+ struct s3c_audio_pdata {
+ int (*cfg_gpio)(struct platform_device *);
++ void *dma_playback;
++ void *dma_capture;
++ void *dma_play_sec;
++ void *dma_capture_mic;
+ union {
+ struct samsung_i2s i2s;
+ } type;
+diff --git a/include/linux/sched.h b/include/linux/sched.h
+index 9128b4e9f541..9e39deaeddd6 100644
+--- a/include/linux/sched.h
++++ b/include/linux/sched.h
+@@ -803,6 +803,7 @@ struct user_struct {
+ #endif
+ unsigned long locked_shm; /* How many pages of mlocked shm ? */
+ unsigned long unix_inflight; /* How many files in flight in unix sockets */
++ atomic_long_t pipe_bufs; /* how many pages are allocated in pipe buffers */
+
+ #ifdef CONFIG_KEYS
+ struct key *uid_keyring; /* UID specific keyring */
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index 6633b0cd3fb9..ca2e26a486ee 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -1781,6 +1781,30 @@ static inline void skb_reserve(struct sk_buff *skb, int len)
+ skb->tail += len;
+ }
+
++/**
++ * skb_tailroom_reserve - adjust reserved_tailroom
++ * @skb: buffer to alter
++ * @mtu: maximum amount of headlen permitted
++ * @needed_tailroom: minimum amount of reserved_tailroom
++ *
++ * Set reserved_tailroom so that headlen can be as large as possible but
++ * not larger than mtu and tailroom cannot be smaller than
++ * needed_tailroom.
++ * The required headroom should already have been reserved before using
++ * this function.
++ */
++static inline void skb_tailroom_reserve(struct sk_buff *skb, unsigned int mtu,
++ unsigned int needed_tailroom)
++{
++ SKB_LINEAR_ASSERT(skb);
++ if (mtu < skb_tailroom(skb) - needed_tailroom)
++ /* use at most mtu */
++ skb->reserved_tailroom = skb_tailroom(skb) - mtu;
++ else
++ /* use up to all available space */
++ skb->reserved_tailroom = needed_tailroom;
++}
++
+ #define ENCAP_TYPE_ETHER 0
+ #define ENCAP_TYPE_IPPROTO 1
+
+diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
+index 598ba80ec30c..ee29cb43470f 100644
+--- a/include/linux/sunrpc/clnt.h
++++ b/include/linux/sunrpc/clnt.h
+@@ -134,8 +134,6 @@ struct rpc_create_args {
+ #define RPC_CLNT_CREATE_NO_RETRANS_TIMEOUT (1UL << 9)
+
+ struct rpc_clnt *rpc_create(struct rpc_create_args *args);
+-struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
+- struct rpc_xprt *xprt);
+ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *,
+ const struct rpc_program *, u32);
+ void rpc_task_reset_client(struct rpc_task *task, struct rpc_clnt *clnt);
+diff --git a/include/linux/usb/ehci_def.h b/include/linux/usb/ehci_def.h
+index 966889a20ea3..e479033bd782 100644
+--- a/include/linux/usb/ehci_def.h
++++ b/include/linux/usb/ehci_def.h
+@@ -180,11 +180,11 @@ struct ehci_regs {
+ * PORTSCx
+ */
+ /* HOSTPC: offset 0x84 */
+- u32 hostpc[1]; /* HOSTPC extension */
++ u32 hostpc[0]; /* HOSTPC extension */
+ #define HOSTPC_PHCD (1<<22) /* Phy clock disable */
+ #define HOSTPC_PSPD (3<<25) /* Port speed detection */
+
+- u32 reserved5[16];
++ u32 reserved5[17];
+
+ /* USBMODE_EX: offset 0xc8 */
+ u32 usbmode_ex; /* USB Device mode extension */
+diff --git a/include/net/bonding.h b/include/net/bonding.h
+index 78ed135e9dea..5cba8f3c3fe4 100644
+--- a/include/net/bonding.h
++++ b/include/net/bonding.h
+@@ -211,6 +211,7 @@ struct bonding {
+ * ALB mode (6) - to sync the use and modifications of its hash table
+ */
+ spinlock_t mode_lock;
++ spinlock_t stats_lock;
+ u8 send_peer_notif;
+ u8 igmp_retrans;
+ #ifdef CONFIG_PROC_FS
+diff --git a/include/net/codel.h b/include/net/codel.h
+index 1e18005f7f65..0ee76108e741 100644
+--- a/include/net/codel.h
++++ b/include/net/codel.h
+@@ -160,11 +160,13 @@ struct codel_vars {
+ * struct codel_stats - contains codel shared variables and stats
+ * @maxpacket: largest packet we've seen so far
+ * @drop_count: temp count of dropped packets in dequeue()
++ * @drop_len: bytes of dropped packets in dequeue()
+ * ecn_mark: number of packets we ECN marked instead of dropping
+ */
+ struct codel_stats {
+ u32 maxpacket;
+ u32 drop_count;
++ u32 drop_len;
+ u32 ecn_mark;
+ };
+
+@@ -301,6 +303,7 @@ static struct sk_buff *codel_dequeue(struct Qdisc *sch,
+ vars->rec_inv_sqrt);
+ goto end;
+ }
++ stats->drop_len += qdisc_pkt_len(skb);
+ qdisc_drop(skb, sch);
+ stats->drop_count++;
+ skb = dequeue_func(vars, sch);
+@@ -323,6 +326,7 @@ static struct sk_buff *codel_dequeue(struct Qdisc *sch,
+ if (params->ecn && INET_ECN_set_ce(skb)) {
+ stats->ecn_mark++;
+ } else {
++ stats->drop_len += qdisc_pkt_len(skb);
+ qdisc_drop(skb, sch);
+ stats->drop_count++;
+
+diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
+index 4e3731ee4eac..cd8594528d4b 100644
+--- a/include/net/ip_vs.h
++++ b/include/net/ip_vs.h
+@@ -1584,6 +1584,23 @@ static inline void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp)
+ }
+ #endif /* CONFIG_IP_VS_NFCT */
+
++/* Really using conntrack? */
++static inline bool ip_vs_conn_uses_conntrack(struct ip_vs_conn *cp,
++ struct sk_buff *skb)
++{
++#ifdef CONFIG_IP_VS_NFCT
++ enum ip_conntrack_info ctinfo;
++ struct nf_conn *ct;
++
++ if (!(cp->flags & IP_VS_CONN_F_NFCT))
++ return false;
++ ct = nf_ct_get(skb, &ctinfo);
++ if (ct && !nf_ct_is_untracked(ct))
++ return true;
++#endif
++ return false;
++}
++
+ static inline int
+ ip_vs_dest_conn_overhead(struct ip_vs_dest *dest)
+ {
+diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
+index 080b657ef8fb..530bdca19803 100644
+--- a/include/net/sch_generic.h
++++ b/include/net/sch_generic.h
+@@ -395,7 +395,8 @@ struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
+ struct Qdisc *qdisc);
+ void qdisc_reset(struct Qdisc *qdisc);
+ void qdisc_destroy(struct Qdisc *qdisc);
+-void qdisc_tree_decrease_qlen(struct Qdisc *qdisc, unsigned int n);
++void qdisc_tree_reduce_backlog(struct Qdisc *qdisc, unsigned int n,
++ unsigned int len);
+ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
+ const struct Qdisc_ops *ops);
+ struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue,
+@@ -691,6 +692,23 @@ static inline void qdisc_reset_queue(struct Qdisc *sch)
+ sch->qstats.backlog = 0;
+ }
+
++static inline struct Qdisc *qdisc_replace(struct Qdisc *sch, struct Qdisc *new,
++ struct Qdisc **pold)
++{
++ struct Qdisc *old;
++
++ sch_tree_lock(sch);
++ old = *pold;
++ *pold = new;
++ if (old != NULL) {
++ qdisc_tree_reduce_backlog(old, old->q.qlen, old->qstats.backlog);
++ qdisc_reset(old);
++ }
++ sch_tree_unlock(sch);
++
++ return old;
++}
++
+ static inline unsigned int __qdisc_queue_drop(struct Qdisc *sch,
+ struct sk_buff_head *list)
+ {
+diff --git a/include/sound/hda_regmap.h b/include/sound/hda_regmap.h
+index df705908480a..2f48d648e051 100644
+--- a/include/sound/hda_regmap.h
++++ b/include/sound/hda_regmap.h
+@@ -17,6 +17,8 @@ int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec,
+ unsigned int verb);
+ int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg,
+ unsigned int *val);
++int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec,
++ unsigned int reg, unsigned int *val);
+ int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg,
+ unsigned int val);
+ int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg,
+diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
+index 6582410a71c7..efd143dcedf1 100644
+--- a/kernel/bpf/verifier.c
++++ b/kernel/bpf/verifier.c
+@@ -1227,6 +1227,7 @@ static int check_ld_abs(struct verifier_env *env, struct bpf_insn *insn)
+ }
+
+ if (insn->dst_reg != BPF_REG_0 || insn->off != 0 ||
++ BPF_SIZE(insn->code) == BPF_DW ||
+ (mode == BPF_ABS && insn->src_reg != BPF_REG_0)) {
+ verbose("BPF_LD_ABS uses reserved fields\n");
+ return -EINVAL;
+@@ -1864,7 +1865,6 @@ static int replace_map_fd_with_map_ptr(struct verifier_env *env)
+ if (IS_ERR(map)) {
+ verbose("fd %d is not pointing to valid bpf_map\n",
+ insn->imm);
+- fdput(f);
+ return PTR_ERR(map);
+ }
+
+diff --git a/kernel/cgroup.c b/kernel/cgroup.c
+index 359da3abb004..3abce1e0f910 100644
+--- a/kernel/cgroup.c
++++ b/kernel/cgroup.c
+@@ -4378,14 +4378,15 @@ static void css_free_work_fn(struct work_struct *work)
+
+ if (ss) {
+ /* css free path */
++ struct cgroup_subsys_state *parent = css->parent;
+ int id = css->id;
+
+- if (css->parent)
+- css_put(css->parent);
+-
+ ss->css_free(css);
+ cgroup_idr_remove(&ss->css_idr, id);
+ cgroup_put(cgrp);
++
++ if (parent)
++ css_put(parent);
+ } else {
+ /* cgroup free path */
+ atomic_dec(&cgrp->root->nr_cgrps);
+@@ -4478,6 +4479,7 @@ static void init_and_link_css(struct cgroup_subsys_state *css,
+ memset(css, 0, sizeof(*css));
+ css->cgroup = cgrp;
+ css->ss = ss;
++ css->id = -1;
+ INIT_LIST_HEAD(&css->sibling);
+ INIT_LIST_HEAD(&css->children);
+ css->serial_nr = css_serial_nr_next++;
+@@ -4563,7 +4565,7 @@ static int create_css(struct cgroup *cgrp, struct cgroup_subsys *ss,
+
+ err = cgroup_idr_alloc(&ss->css_idr, NULL, 2, 0, GFP_NOWAIT);
+ if (err < 0)
+- goto err_free_percpu_ref;
++ goto err_free_css;
+ css->id = err;
+
+ if (visible) {
+@@ -4595,9 +4597,6 @@ err_list_del:
+ list_del_rcu(&css->sibling);
+ cgroup_clear_dir(css->cgroup, 1 << css->ss->id);
+ err_free_id:
+- cgroup_idr_remove(&ss->css_idr, css->id);
+-err_free_percpu_ref:
+- percpu_ref_exit(&css->refcnt);
+ err_free_css:
+ call_rcu(&css->rcu_head, css_free_rcu_fn);
+ return err;
+diff --git a/kernel/futex.c b/kernel/futex.c
+index 46b168e19c98..2214b70f1910 100644
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -1381,8 +1381,8 @@ void requeue_futex(struct futex_q *q, struct futex_hash_bucket *hb1,
+ if (likely(&hb1->chain != &hb2->chain)) {
+ plist_del(&q->list, &hb1->chain);
+ hb_waiters_dec(hb1);
+- plist_add(&q->list, &hb2->chain);
+ hb_waiters_inc(hb2);
++ plist_add(&q->list, &hb2->chain);
+ q->lock_ptr = &hb2->lock;
+ }
+ get_futex_key_refs(key2);
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 3b0f4c09ab92..98e607121d09 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -4568,14 +4568,16 @@ void show_state_filter(unsigned long state_filter)
+ /*
+ * reset the NMI-timeout, listing all files on a slow
+ * console might take a lot of time:
++ * Also, reset softlockup watchdogs on all CPUs, because
++ * another CPU might be blocked waiting for us to process
++ * an IPI.
+ */
+ touch_nmi_watchdog();
++ touch_all_softlockup_watchdogs();
+ if (!state_filter || (p->state & state_filter))
+ sched_show_task(p);
+ }
+
+- touch_all_softlockup_watchdogs();
+-
+ #ifdef CONFIG_SCHED_DEBUG
+ sysrq_sched_debug_show();
+ #endif
+diff --git a/kernel/sysctl.c b/kernel/sysctl.c
+index c3eee4c6d6c1..7d4900404c94 100644
+--- a/kernel/sysctl.c
++++ b/kernel/sysctl.c
+@@ -1695,6 +1695,20 @@ static struct ctl_table fs_table[] = {
+ .proc_handler = &pipe_proc_fn,
+ .extra1 = &pipe_min_size,
+ },
++ {
++ .procname = "pipe-user-pages-hard",
++ .data = &pipe_user_pages_hard,
++ .maxlen = sizeof(pipe_user_pages_hard),
++ .mode = 0644,
++ .proc_handler = proc_doulongvec_minmax,
++ },
++ {
++ .procname = "pipe-user-pages-soft",
++ .data = &pipe_user_pages_soft,
++ .maxlen = sizeof(pipe_user_pages_soft),
++ .mode = 0644,
++ .proc_handler = proc_doulongvec_minmax,
++ },
+ { }
+ };
+
+diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c
+index 6d6c0411cbe8..fc0c74f18288 100644
+--- a/kernel/trace/trace_printk.c
++++ b/kernel/trace/trace_printk.c
+@@ -36,6 +36,10 @@ struct trace_bprintk_fmt {
+ static inline struct trace_bprintk_fmt *lookup_format(const char *fmt)
+ {
+ struct trace_bprintk_fmt *pos;
++
++ if (!fmt)
++ return ERR_PTR(-EINVAL);
++
+ list_for_each_entry(pos, &trace_bprintk_fmt_list, list) {
+ if (!strcmp(pos->fmt, fmt))
+ return pos;
+@@ -57,7 +61,8 @@ void hold_module_trace_bprintk_format(const char **start, const char **end)
+ for (iter = start; iter < end; iter++) {
+ struct trace_bprintk_fmt *tb_fmt = lookup_format(*iter);
+ if (tb_fmt) {
+- *iter = tb_fmt->fmt;
++ if (!IS_ERR(tb_fmt))
++ *iter = tb_fmt->fmt;
+ continue;
+ }
+
+diff --git a/mm/compaction.c b/mm/compaction.c
+index 3dcf93cd622b..32c719a4bc3d 100644
+--- a/mm/compaction.c
++++ b/mm/compaction.c
+@@ -431,6 +431,24 @@ static unsigned long isolate_freepages_block(struct compact_control *cc,
+
+ if (!valid_page)
+ valid_page = page;
++
++ /*
++ * For compound pages such as THP and hugetlbfs, we can save
++ * potentially a lot of iterations if we skip them at once.
++ * The check is racy, but we can consider only valid values
++ * and the only danger is skipping too much.
++ */
++ if (PageCompound(page)) {
++ unsigned int comp_order = compound_order(page);
++
++ if (likely(comp_order < MAX_ORDER)) {
++ blockpfn += (1UL << comp_order) - 1;
++ cursor += (1UL << comp_order) - 1;
++ }
++
++ goto isolate_fail;
++ }
++
+ if (!PageBuddy(page))
+ goto isolate_fail;
+
+@@ -462,25 +480,23 @@ static unsigned long isolate_freepages_block(struct compact_control *cc,
+
+ /* Found a free page, break it into order-0 pages */
+ isolated = split_free_page(page);
++ if (!isolated)
++ break;
++
+ total_isolated += isolated;
++ cc->nr_freepages += isolated;
+ for (i = 0; i < isolated; i++) {
+ list_add(&page->lru, freelist);
+ page++;
+ }
+-
+- /* If a page was split, advance to the end of it */
+- if (isolated) {
+- cc->nr_freepages += isolated;
+- if (!strict &&
+- cc->nr_migratepages <= cc->nr_freepages) {
+- blockpfn += isolated;
+- break;
+- }
+-
+- blockpfn += isolated - 1;
+- cursor += isolated - 1;
+- continue;
++ if (!strict && cc->nr_migratepages <= cc->nr_freepages) {
++ blockpfn += isolated;
++ break;
+ }
++ /* Advance to the end of split page */
++ blockpfn += isolated - 1;
++ cursor += isolated - 1;
++ continue;
+
+ isolate_fail:
+ if (strict)
+@@ -490,6 +506,16 @@ isolate_fail:
+
+ }
+
++ if (locked)
++ spin_unlock_irqrestore(&cc->zone->lock, flags);
++
++ /*
++ * There is a tiny chance that we have read bogus compound_order(),
++ * so be careful to not go outside of the pageblock.
++ */
++ if (unlikely(blockpfn > end_pfn))
++ blockpfn = end_pfn;
++
+ trace_mm_compaction_isolate_freepages(*start_pfn, blockpfn,
+ nr_scanned, total_isolated);
+
+@@ -504,9 +530,6 @@ isolate_fail:
+ if (strict && blockpfn < end_pfn)
+ total_isolated = 0;
+
+- if (locked)
+- spin_unlock_irqrestore(&cc->zone->lock, flags);
+-
+ /* Update the pageblock-skip if the whole pageblock was scanned */
+ if (blockpfn == end_pfn)
+ update_pageblock_skip(cc, valid_page, total_isolated, false);
+@@ -930,6 +953,7 @@ static void isolate_freepages(struct compact_control *cc)
+ block_end_pfn = block_start_pfn,
+ block_start_pfn -= pageblock_nr_pages,
+ isolate_start_pfn = block_start_pfn) {
++ unsigned long isolated;
+
+ /*
+ * This can iterate a massively long zone without finding any
+@@ -954,8 +978,12 @@ static void isolate_freepages(struct compact_control *cc)
+ continue;
+
+ /* Found a block suitable for isolating free pages from. */
+- isolate_freepages_block(cc, &isolate_start_pfn,
+- block_end_pfn, freelist, false);
++ isolated = isolate_freepages_block(cc, &isolate_start_pfn,
++ block_end_pfn, freelist, false);
++ /* If isolation failed early, do not continue needlessly */
++ if (!isolated && isolate_start_pfn < block_end_pfn &&
++ cc->nr_migratepages > cc->nr_freepages)
++ break;
+
+ /*
+ * Remember where the free scanner should restart next time,
+diff --git a/mm/migrate.c b/mm/migrate.c
+index fe71f91c7b27..2599977221aa 100644
+--- a/mm/migrate.c
++++ b/mm/migrate.c
+@@ -389,6 +389,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
+
+ return MIGRATEPAGE_SUCCESS;
+ }
++EXPORT_SYMBOL(migrate_page_move_mapping);
+
+ /*
+ * The expected number of remaining references is the same as that
+@@ -549,6 +550,7 @@ void migrate_page_copy(struct page *newpage, struct page *page)
+ if (PageWriteback(newpage))
+ end_page_writeback(newpage);
+ }
++EXPORT_SYMBOL(migrate_page_copy);
+
+ /************************************************************
+ * Migration functions
+diff --git a/mm/page_alloc.c b/mm/page_alloc.c
+index 551923097bbc..f6f6831cec52 100644
+--- a/mm/page_alloc.c
++++ b/mm/page_alloc.c
+@@ -5926,7 +5926,7 @@ int __meminit init_per_zone_wmark_min(void)
+ setup_per_zone_inactive_ratio();
+ return 0;
+ }
+-module_init(init_per_zone_wmark_min)
++core_initcall(init_per_zone_wmark_min)
+
+ /*
+ * min_free_kbytes_sysctl_handler - just a wrapper around proc_dointvec() so
+diff --git a/mm/page_isolation.c b/mm/page_isolation.c
+index 303c908790ef..4b640c20f5c5 100644
+--- a/mm/page_isolation.c
++++ b/mm/page_isolation.c
+@@ -300,11 +300,11 @@ struct page *alloc_migrate_target(struct page *page, unsigned long private,
+ * now as a simple work-around, we use the next node for destination.
+ */
+ if (PageHuge(page)) {
+- nodemask_t src = nodemask_of_node(page_to_nid(page));
+- nodemask_t dst;
+- nodes_complement(dst, src);
++ int node = next_online_node(page_to_nid(page));
++ if (node == MAX_NUMNODES)
++ node = first_online_node;
+ return alloc_huge_page_node(page_hstate(compound_head(page)),
+- next_node(page_to_nid(page), dst));
++ node);
+ }
+
+ if (PageHighMem(page))
+diff --git a/mm/percpu.c b/mm/percpu.c
+index 2dd74487a0af..b97617587620 100644
+--- a/mm/percpu.c
++++ b/mm/percpu.c
+@@ -110,7 +110,7 @@ struct pcpu_chunk {
+ int map_used; /* # of map entries used before the sentry */
+ int map_alloc; /* # of map entries allocated */
+ int *map; /* allocation map */
+- struct work_struct map_extend_work;/* async ->map[] extension */
++ struct list_head map_extend_list;/* on pcpu_map_extend_chunks */
+
+ void *data; /* chunk data */
+ int first_free; /* no free below this */
+@@ -160,10 +160,13 @@ static struct pcpu_chunk *pcpu_reserved_chunk;
+ static int pcpu_reserved_chunk_limit;
+
+ static DEFINE_SPINLOCK(pcpu_lock); /* all internal data structures */
+-static DEFINE_MUTEX(pcpu_alloc_mutex); /* chunk create/destroy, [de]pop */
++static DEFINE_MUTEX(pcpu_alloc_mutex); /* chunk create/destroy, [de]pop, map ext */
+
+ static struct list_head *pcpu_slot __read_mostly; /* chunk list slots */
+
++/* chunks which need their map areas extended, protected by pcpu_lock */
++static LIST_HEAD(pcpu_map_extend_chunks);
++
+ /*
+ * The number of empty populated pages, protected by pcpu_lock. The
+ * reserved chunk doesn't contribute to the count.
+@@ -397,13 +400,19 @@ static int pcpu_need_to_extend(struct pcpu_chunk *chunk, bool is_atomic)
+ {
+ int margin, new_alloc;
+
++ lockdep_assert_held(&pcpu_lock);
++
+ if (is_atomic) {
+ margin = 3;
+
+ if (chunk->map_alloc <
+- chunk->map_used + PCPU_ATOMIC_MAP_MARGIN_LOW &&
+- pcpu_async_enabled)
+- schedule_work(&chunk->map_extend_work);
++ chunk->map_used + PCPU_ATOMIC_MAP_MARGIN_LOW) {
++ if (list_empty(&chunk->map_extend_list)) {
++ list_add_tail(&chunk->map_extend_list,
++ &pcpu_map_extend_chunks);
++ pcpu_schedule_balance_work();
++ }
++ }
+ } else {
+ margin = PCPU_ATOMIC_MAP_MARGIN_HIGH;
+ }
+@@ -437,6 +446,8 @@ static int pcpu_extend_area_map(struct pcpu_chunk *chunk, int new_alloc)
+ size_t old_size = 0, new_size = new_alloc * sizeof(new[0]);
+ unsigned long flags;
+
++ lockdep_assert_held(&pcpu_alloc_mutex);
++
+ new = pcpu_mem_zalloc(new_size);
+ if (!new)
+ return -ENOMEM;
+@@ -469,20 +480,6 @@ out_unlock:
+ return 0;
+ }
+
+-static void pcpu_map_extend_workfn(struct work_struct *work)
+-{
+- struct pcpu_chunk *chunk = container_of(work, struct pcpu_chunk,
+- map_extend_work);
+- int new_alloc;
+-
+- spin_lock_irq(&pcpu_lock);
+- new_alloc = pcpu_need_to_extend(chunk, false);
+- spin_unlock_irq(&pcpu_lock);
+-
+- if (new_alloc)
+- pcpu_extend_area_map(chunk, new_alloc);
+-}
+-
+ /**
+ * pcpu_fit_in_area - try to fit the requested allocation in a candidate area
+ * @chunk: chunk the candidate area belongs to
+@@ -742,7 +739,7 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void)
+ chunk->map_used = 1;
+
+ INIT_LIST_HEAD(&chunk->list);
+- INIT_WORK(&chunk->map_extend_work, pcpu_map_extend_workfn);
++ INIT_LIST_HEAD(&chunk->map_extend_list);
+ chunk->free_size = pcpu_unit_size;
+ chunk->contig_hint = pcpu_unit_size;
+
+@@ -897,6 +894,9 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
+ return NULL;
+ }
+
++ if (!is_atomic)
++ mutex_lock(&pcpu_alloc_mutex);
++
+ spin_lock_irqsave(&pcpu_lock, flags);
+
+ /* serve reserved allocations from the reserved chunk if available */
+@@ -969,12 +969,9 @@ restart:
+ if (is_atomic)
+ goto fail;
+
+- mutex_lock(&pcpu_alloc_mutex);
+-
+ if (list_empty(&pcpu_slot[pcpu_nr_slots - 1])) {
+ chunk = pcpu_create_chunk();
+ if (!chunk) {
+- mutex_unlock(&pcpu_alloc_mutex);
+ err = "failed to allocate new chunk";
+ goto fail;
+ }
+@@ -985,7 +982,6 @@ restart:
+ spin_lock_irqsave(&pcpu_lock, flags);
+ }
+
+- mutex_unlock(&pcpu_alloc_mutex);
+ goto restart;
+
+ area_found:
+@@ -995,8 +991,6 @@ area_found:
+ if (!is_atomic) {
+ int page_start, page_end, rs, re;
+
+- mutex_lock(&pcpu_alloc_mutex);
+-
+ page_start = PFN_DOWN(off);
+ page_end = PFN_UP(off + size);
+
+@@ -1007,7 +1001,6 @@ area_found:
+
+ spin_lock_irqsave(&pcpu_lock, flags);
+ if (ret) {
+- mutex_unlock(&pcpu_alloc_mutex);
+ pcpu_free_area(chunk, off, &occ_pages);
+ err = "failed to populate";
+ goto fail_unlock;
+@@ -1047,6 +1040,8 @@ fail:
+ /* see the flag handling in pcpu_blance_workfn() */
+ pcpu_atomic_alloc_failed = true;
+ pcpu_schedule_balance_work();
++ } else {
++ mutex_unlock(&pcpu_alloc_mutex);
+ }
+ return NULL;
+ }
+@@ -1131,6 +1126,7 @@ static void pcpu_balance_workfn(struct work_struct *work)
+ if (chunk == list_first_entry(free_head, struct pcpu_chunk, list))
+ continue;
+
++ list_del_init(&chunk->map_extend_list);
+ list_move(&chunk->list, &to_free);
+ }
+
+@@ -1148,6 +1144,25 @@ static void pcpu_balance_workfn(struct work_struct *work)
+ pcpu_destroy_chunk(chunk);
+ }
+
++ /* service chunks which requested async area map extension */
++ do {
++ int new_alloc = 0;
++
++ spin_lock_irq(&pcpu_lock);
++
++ chunk = list_first_entry_or_null(&pcpu_map_extend_chunks,
++ struct pcpu_chunk, map_extend_list);
++ if (chunk) {
++ list_del_init(&chunk->map_extend_list);
++ new_alloc = pcpu_need_to_extend(chunk, false);
++ }
++
++ spin_unlock_irq(&pcpu_lock);
++
++ if (new_alloc)
++ pcpu_extend_area_map(chunk, new_alloc);
++ } while (chunk);
++
+ /*
+ * Ensure there are certain number of free populated pages for
+ * atomic allocs. Fill up from the most packed so that atomic
+@@ -1646,7 +1661,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
+ */
+ schunk = memblock_virt_alloc(pcpu_chunk_struct_size, 0);
+ INIT_LIST_HEAD(&schunk->list);
+- INIT_WORK(&schunk->map_extend_work, pcpu_map_extend_workfn);
++ INIT_LIST_HEAD(&schunk->map_extend_list);
+ schunk->base_addr = base_addr;
+ schunk->map = smap;
+ schunk->map_alloc = ARRAY_SIZE(smap);
+@@ -1676,7 +1691,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
+ if (dyn_size) {
+ dchunk = memblock_virt_alloc(pcpu_chunk_struct_size, 0);
+ INIT_LIST_HEAD(&dchunk->list);
+- INIT_WORK(&dchunk->map_extend_work, pcpu_map_extend_workfn);
++ INIT_LIST_HEAD(&dchunk->map_extend_list);
+ dchunk->base_addr = base_addr;
+ dchunk->map = dmap;
+ dchunk->map_alloc = ARRAY_SIZE(dmap);
+diff --git a/mm/shmem.c b/mm/shmem.c
+index 47d536e59fc0..46511ad90bc5 100644
+--- a/mm/shmem.c
++++ b/mm/shmem.c
+@@ -2137,9 +2137,11 @@ static long shmem_fallocate(struct file *file, int mode, loff_t offset,
+ NULL);
+ if (error) {
+ /* Remove the !PageUptodate pages we added */
+- shmem_undo_range(inode,
+- (loff_t)start << PAGE_CACHE_SHIFT,
+- (loff_t)index << PAGE_CACHE_SHIFT, true);
++ if (index > start) {
++ shmem_undo_range(inode,
++ (loff_t)start << PAGE_CACHE_SHIFT,
++ ((loff_t)index << PAGE_CACHE_SHIFT) - 1, true);
++ }
+ goto undone;
+ }
+
+diff --git a/mm/swap.c b/mm/swap.c
+index a7251a8ed532..b523f0a4cbfb 100644
+--- a/mm/swap.c
++++ b/mm/swap.c
+@@ -483,7 +483,7 @@ void rotate_reclaimable_page(struct page *page)
+ page_cache_get(page);
+ local_irq_save(flags);
+ pvec = this_cpu_ptr(&lru_rotate_pvecs);
+- if (!pagevec_add(pvec, page))
++ if (!pagevec_add(pvec, page) || PageCompound(page))
+ pagevec_move_tail(pvec);
+ local_irq_restore(flags);
+ }
+@@ -539,7 +539,7 @@ void activate_page(struct page *page)
+ struct pagevec *pvec = &get_cpu_var(activate_page_pvecs);
+
+ page_cache_get(page);
+- if (!pagevec_add(pvec, page))
++ if (!pagevec_add(pvec, page) || PageCompound(page))
+ pagevec_lru_move_fn(pvec, __activate_page, NULL);
+ put_cpu_var(activate_page_pvecs);
+ }
+@@ -631,9 +631,8 @@ static void __lru_cache_add(struct page *page)
+ struct pagevec *pvec = &get_cpu_var(lru_add_pvec);
+
+ page_cache_get(page);
+- if (!pagevec_space(pvec))
++ if (!pagevec_space(pvec) || PageCompound(page))
+ __pagevec_lru_add(pvec);
+- pagevec_add(pvec, page);
+ put_cpu_var(lru_add_pvec);
+ }
+
+@@ -846,7 +845,7 @@ void deactivate_file_page(struct page *page)
+ if (likely(get_page_unless_zero(page))) {
+ struct pagevec *pvec = &get_cpu_var(lru_deactivate_file_pvecs);
+
+- if (!pagevec_add(pvec, page))
++ if (!pagevec_add(pvec, page) || PageCompound(page))
+ pagevec_lru_move_fn(pvec, lru_deactivate_file_fn, NULL);
+ put_cpu_var(lru_deactivate_file_pvecs);
+ }
+diff --git a/net/ax25/ax25_ip.c b/net/ax25/ax25_ip.c
+index 7c646bb2c6f7..98d206b22653 100644
+--- a/net/ax25/ax25_ip.c
++++ b/net/ax25/ax25_ip.c
+@@ -229,8 +229,23 @@ netdev_tx_t ax25_ip_xmit(struct sk_buff *skb)
+ }
+ #endif
+
++static bool ax25_validate_header(const char *header, unsigned int len)
++{
++ ax25_digi digi;
++
++ if (!len)
++ return false;
++
++ if (header[0])
++ return true;
++
++ return ax25_addr_parse(header + 1, len - 1, NULL, NULL, &digi, NULL,
++ NULL);
++}
++
+ const struct header_ops ax25_header_ops = {
+ .create = ax25_hard_header,
++ .validate = ax25_validate_header,
+ };
+
+ EXPORT_SYMBOL(ax25_header_ops);
+diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
+index da83982bf974..f77dafc114a6 100644
+--- a/net/batman-adv/routing.c
++++ b/net/batman-adv/routing.c
+@@ -88,6 +88,15 @@ static void _batadv_update_route(struct batadv_priv *bat_priv,
+ neigh_node = NULL;
+
+ spin_lock_bh(&orig_node->neigh_list_lock);
++ /* curr_router used earlier may not be the current orig_ifinfo->router
++ * anymore because it was dereferenced outside of the neigh_list_lock
++ * protected region. After the new best neighbor has replace the current
++ * best neighbor the reference counter needs to decrease. Consequently,
++ * the code needs to ensure the curr_router variable contains a pointer
++ * to the replaced best neighbor.
++ */
++ curr_router = rcu_dereference_protected(orig_ifinfo->router, true);
++
+ rcu_assign_pointer(orig_ifinfo->router, neigh_node);
+ spin_unlock_bh(&orig_node->neigh_list_lock);
+ batadv_orig_ifinfo_free_ref(orig_ifinfo);
+diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
+index 3d64ed20c393..6004c2de7b2a 100644
+--- a/net/batman-adv/send.c
++++ b/net/batman-adv/send.c
+@@ -611,6 +611,9 @@ batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
+
+ if (pending) {
+ hlist_del(&forw_packet->list);
++ if (!forw_packet->own)
++ atomic_inc(&bat_priv->bcast_queue_left);
++
+ batadv_forw_packet_free(forw_packet);
+ }
+ }
+@@ -638,6 +641,9 @@ batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
+
+ if (pending) {
+ hlist_del(&forw_packet->list);
++ if (!forw_packet->own)
++ atomic_inc(&bat_priv->batman_queue_left);
++
+ batadv_forw_packet_free(forw_packet);
+ }
+ }
+diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
+index a0b1b861b968..b38a8aa3cce8 100644
+--- a/net/batman-adv/soft-interface.c
++++ b/net/batman-adv/soft-interface.c
+@@ -377,11 +377,17 @@ void batadv_interface_rx(struct net_device *soft_iface,
+ */
+ nf_reset(skb);
+
++ if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
++ goto dropped;
++
+ vid = batadv_get_vid(skb, 0);
+ ethhdr = eth_hdr(skb);
+
+ switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_8021Q:
++ if (!pskb_may_pull(skb, VLAN_ETH_HLEN))
++ goto dropped;
++
+ vhdr = (struct vlan_ethhdr *)skb->data;
+
+ if (vhdr->h_vlan_encapsulated_proto != ethertype)
+@@ -393,8 +399,6 @@ void batadv_interface_rx(struct net_device *soft_iface,
+ }
+
+ /* skb->dev & skb->pkt_type are set here */
+- if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
+- goto dropped;
+ skb->protocol = eth_type_trans(skb, soft_iface);
+
+ /* should not be necessary anymore as we use skb_pull_rcsum()
+diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
+index 8d423bc649b9..f876f707fd9e 100644
+--- a/net/bridge/br_ioctl.c
++++ b/net/bridge/br_ioctl.c
+@@ -21,18 +21,19 @@
+ #include <asm/uaccess.h>
+ #include "br_private.h"
+
+-/* called with RTNL */
+ static int get_bridge_ifindices(struct net *net, int *indices, int num)
+ {
+ struct net_device *dev;
+ int i = 0;
+
+- for_each_netdev(net, dev) {
++ rcu_read_lock();
++ for_each_netdev_rcu(net, dev) {
+ if (i >= num)
+ break;
+ if (dev->priv_flags & IFF_EBRIDGE)
+ indices[i++] = dev->ifindex;
+ }
++ rcu_read_unlock();
+
+ return i;
+ }
+diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
+index fe95cb704aaa..e9c4b51525de 100644
+--- a/net/core/rtnetlink.c
++++ b/net/core/rtnetlink.c
+@@ -884,7 +884,9 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
+ + rtnl_link_get_size(dev) /* IFLA_LINKINFO */
+ + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */
+ + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */
+- + nla_total_size(MAX_PHYS_ITEM_ID_LEN); /* IFLA_PHYS_SWITCH_ID */
++ + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */
++ + nla_total_size(IFNAMSIZ); /* IFLA_PHYS_PORT_NAME */
++
+ }
+
+ static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
+@@ -1070,14 +1072,16 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
+ goto nla_put_failure;
+
+ if (1) {
+- struct rtnl_link_ifmap map = {
+- .mem_start = dev->mem_start,
+- .mem_end = dev->mem_end,
+- .base_addr = dev->base_addr,
+- .irq = dev->irq,
+- .dma = dev->dma,
+- .port = dev->if_port,
+- };
++ struct rtnl_link_ifmap map;
++
++ memset(&map, 0, sizeof(map));
++ map.mem_start = dev->mem_start;
++ map.mem_end = dev->mem_end;
++ map.base_addr = dev->base_addr;
++ map.irq = dev->irq;
++ map.dma = dev->dma;
++ map.port = dev->if_port;
++
+ if (nla_put(skb, IFLA_MAP, sizeof(map), &map))
+ goto nla_put_failure;
+ }
+diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
+index 03227ffd19ce..76d3bf70c31a 100644
+--- a/net/decnet/dn_route.c
++++ b/net/decnet/dn_route.c
+@@ -1036,10 +1036,13 @@ source_ok:
+ if (!fld.daddr) {
+ fld.daddr = fld.saddr;
+
+- err = -EADDRNOTAVAIL;
+ if (dev_out)
+ dev_put(dev_out);
++ err = -EINVAL;
+ dev_out = init_net.loopback_dev;
++ if (!dev_out->dn_ptr)
++ goto out;
++ err = -EADDRNOTAVAIL;
+ dev_hold(dev_out);
+ if (!fld.daddr) {
+ fld.daddr =
+@@ -1112,6 +1115,8 @@ source_ok:
+ if (dev_out == NULL)
+ goto out;
+ dn_db = rcu_dereference_raw(dev_out->dn_ptr);
++ if (!dn_db)
++ goto e_inval;
+ /* Possible improvement - check all devices for local addr */
+ if (dn_dev_islocal(dev_out, fld.daddr)) {
+ dev_put(dev_out);
+@@ -1153,6 +1158,8 @@ select_source:
+ dev_put(dev_out);
+ dev_out = init_net.loopback_dev;
+ dev_hold(dev_out);
++ if (!dev_out->dn_ptr)
++ goto e_inval;
+ fld.flowidn_oif = dev_out->ifindex;
+ if (res.fi)
+ dn_fib_info_put(res.fi);
+diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
+index 280d46f947ea..a57056d87a43 100644
+--- a/net/ipv4/devinet.c
++++ b/net/ipv4/devinet.c
+@@ -334,6 +334,9 @@ static void __inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,
+
+ ASSERT_RTNL();
+
++ if (in_dev->dead)
++ goto no_promotions;
++
+ /* 1. Deleting primary ifaddr forces deletion all secondaries
+ * unless alias promotion is set
+ **/
+@@ -380,6 +383,7 @@ static void __inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,
+ fib_del_ifaddr(ifa, ifa1);
+ }
+
++no_promotions:
+ /* 2. Unlink it */
+
+ *ifap = ifa1->ifa_next;
+diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
+index 872494e6e6eb..513b6aabc5b7 100644
+--- a/net/ipv4/fib_frontend.c
++++ b/net/ipv4/fib_frontend.c
+@@ -861,7 +861,11 @@ void fib_del_ifaddr(struct in_ifaddr *ifa, struct in_ifaddr *iprim)
+ if (ifa->ifa_flags & IFA_F_SECONDARY) {
+ prim = inet_ifa_byprefix(in_dev, any, ifa->ifa_mask);
+ if (!prim) {
+- pr_warn("%s: bug: prim == NULL\n", __func__);
++ /* if the device has been deleted, we don't perform
++ * address promotion
++ */
++ if (!in_dev->dead)
++ pr_warn("%s: bug: prim == NULL\n", __func__);
+ return;
+ }
+ if (iprim && iprim != prim) {
+@@ -876,6 +880,9 @@ void fib_del_ifaddr(struct in_ifaddr *ifa, struct in_ifaddr *iprim)
+ subnet = 1;
+ }
+
++ if (in_dev->dead)
++ goto no_promotions;
++
+ /* Deletion is more complicated than add.
+ * We should take care of not to delete too much :-)
+ *
+@@ -951,6 +958,7 @@ void fib_del_ifaddr(struct in_ifaddr *ifa, struct in_ifaddr *iprim)
+ }
+ }
+
++no_promotions:
+ if (!(ok & BRD_OK))
+ fib_magic(RTM_DELROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32, prim);
+ if (subnet && ifa->ifa_prefixlen < 31) {
+diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
+index a3a697f5ffba..218abf9fb1ed 100644
+--- a/net/ipv4/igmp.c
++++ b/net/ipv4/igmp.c
+@@ -353,9 +353,8 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, unsigned int mtu)
+ skb_dst_set(skb, &rt->dst);
+ skb->dev = dev;
+
+- skb->reserved_tailroom = skb_end_offset(skb) -
+- min(mtu, skb_end_offset(skb));
+ skb_reserve(skb, hlen);
++ skb_tailroom_reserve(skb, mtu, tlen);
+
+ skb_reset_network_header(skb);
+ pip = ip_hdr(skb);
+diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
+index 626d9e56a6bd..35080a708b59 100644
+--- a/net/ipv4/ip_tunnel.c
++++ b/net/ipv4/ip_tunnel.c
+@@ -652,6 +652,8 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
+ inner_iph = (const struct iphdr *)skb_inner_network_header(skb);
+ connected = (tunnel->parms.iph.daddr != 0);
+
++ memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
++
+ dst = tnl_params->daddr;
+ if (dst == 0) {
+ /* NBMA tunnel */
+@@ -749,7 +751,6 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
+ tunnel->err_time + IPTUNNEL_ERR_TIMEO)) {
+ tunnel->err_count--;
+
+- memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
+ dst_link_failure(skb);
+ } else
+ tunnel->err_count = 0;
+diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
+index a61200754f4b..2953ee9e5fa0 100644
+--- a/net/ipv4/netfilter/arp_tables.c
++++ b/net/ipv4/netfilter/arp_tables.c
+@@ -354,11 +354,24 @@ unsigned int arpt_do_table(struct sk_buff *skb,
+ }
+
+ /* All zeroes == unconditional rule. */
+-static inline bool unconditional(const struct arpt_arp *arp)
++static inline bool unconditional(const struct arpt_entry *e)
+ {
+ static const struct arpt_arp uncond;
+
+- return memcmp(arp, &uncond, sizeof(uncond)) == 0;
++ return e->target_offset == sizeof(struct arpt_entry) &&
++ memcmp(&e->arp, &uncond, sizeof(uncond)) == 0;
++}
++
++static bool find_jump_target(const struct xt_table_info *t,
++ const struct arpt_entry *target)
++{
++ struct arpt_entry *iter;
++
++ xt_entry_foreach(iter, t->entries, t->size) {
++ if (iter == target)
++ return true;
++ }
++ return false;
+ }
+
+ /* Figures out from what hook each rule can be called: returns 0 if
+@@ -397,11 +410,10 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
+ |= ((1 << hook) | (1 << NF_ARP_NUMHOOKS));
+
+ /* Unconditional return/END. */
+- if ((e->target_offset == sizeof(struct arpt_entry) &&
++ if ((unconditional(e) &&
+ (strcmp(t->target.u.user.name,
+ XT_STANDARD_TARGET) == 0) &&
+- t->verdict < 0 && unconditional(&e->arp)) ||
+- visited) {
++ t->verdict < 0) || visited) {
+ unsigned int oldpos, size;
+
+ if ((strcmp(t->target.u.user.name,
+@@ -434,6 +446,8 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
+ size = e->next_offset;
+ e = (struct arpt_entry *)
+ (entry0 + pos + size);
++ if (pos + size >= newinfo->size)
++ return 0;
+ e->counters.pcnt = pos;
+ pos += size;
+ } else {
+@@ -453,9 +467,15 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
+ /* This a jump; chase it. */
+ duprintf("Jump rule %u -> %u\n",
+ pos, newpos);
++ e = (struct arpt_entry *)
++ (entry0 + newpos);
++ if (!find_jump_target(newinfo, e))
++ return 0;
+ } else {
+ /* ... this is a fallthru */
+ newpos = pos + e->next_offset;
++ if (newpos >= newinfo->size)
++ return 0;
+ }
+ e = (struct arpt_entry *)
+ (entry0 + newpos);
+@@ -469,25 +489,6 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
+ return 1;
+ }
+
+-static inline int check_entry(const struct arpt_entry *e, const char *name)
+-{
+- const struct xt_entry_target *t;
+-
+- if (!arp_checkentry(&e->arp)) {
+- duprintf("arp_tables: arp check failed %p %s.\n", e, name);
+- return -EINVAL;
+- }
+-
+- if (e->target_offset + sizeof(struct xt_entry_target) > e->next_offset)
+- return -EINVAL;
+-
+- t = arpt_get_target_c(e);
+- if (e->target_offset + t->u.target_size > e->next_offset)
+- return -EINVAL;
+-
+- return 0;
+-}
+-
+ static inline int check_target(struct arpt_entry *e, const char *name)
+ {
+ struct xt_entry_target *t = arpt_get_target(e);
+@@ -517,10 +518,6 @@ find_check_entry(struct arpt_entry *e, const char *name, unsigned int size)
+ struct xt_target *target;
+ int ret;
+
+- ret = check_entry(e, name);
+- if (ret)
+- return ret;
+-
+ t = arpt_get_target(e);
+ target = xt_request_find_target(NFPROTO_ARP, t->u.user.name,
+ t->u.user.revision);
+@@ -546,7 +543,7 @@ static bool check_underflow(const struct arpt_entry *e)
+ const struct xt_entry_target *t;
+ unsigned int verdict;
+
+- if (!unconditional(&e->arp))
++ if (!unconditional(e))
+ return false;
+ t = arpt_get_target_c(e);
+ if (strcmp(t->u.user.name, XT_STANDARD_TARGET) != 0)
+@@ -565,9 +562,11 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
+ unsigned int valid_hooks)
+ {
+ unsigned int h;
++ int err;
+
+ if ((unsigned long)e % __alignof__(struct arpt_entry) != 0 ||
+- (unsigned char *)e + sizeof(struct arpt_entry) >= limit) {
++ (unsigned char *)e + sizeof(struct arpt_entry) >= limit ||
++ (unsigned char *)e + e->next_offset > limit) {
+ duprintf("Bad offset %p\n", e);
+ return -EINVAL;
+ }
+@@ -579,6 +578,14 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
+ return -EINVAL;
+ }
+
++ if (!arp_checkentry(&e->arp))
++ return -EINVAL;
++
++ err = xt_check_entry_offsets(e, e->elems, e->target_offset,
++ e->next_offset);
++ if (err)
++ return err;
++
+ /* Check hooks & underflows */
+ for (h = 0; h < NF_ARP_NUMHOOKS; h++) {
+ if (!(valid_hooks & (1 << h)))
+@@ -587,9 +594,9 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
+ newinfo->hook_entry[h] = hook_entries[h];
+ if ((unsigned char *)e - base == underflows[h]) {
+ if (!check_underflow(e)) {
+- pr_err("Underflows must be unconditional and "
+- "use the STANDARD target with "
+- "ACCEPT/DROP\n");
++ pr_debug("Underflows must be unconditional and "
++ "use the STANDARD target with "
++ "ACCEPT/DROP\n");
+ return -EINVAL;
+ }
+ newinfo->underflow[h] = underflows[h];
+@@ -679,10 +686,8 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0,
+ }
+ }
+
+- if (!mark_source_chains(newinfo, repl->valid_hooks, entry0)) {
+- duprintf("Looping hook\n");
++ if (!mark_source_chains(newinfo, repl->valid_hooks, entry0))
+ return -ELOOP;
+- }
+
+ /* Finally, each sanity check must pass */
+ i = 0;
+@@ -1118,56 +1123,18 @@ static int do_add_counters(struct net *net, const void __user *user,
+ unsigned int i, curcpu;
+ struct xt_counters_info tmp;
+ struct xt_counters *paddc;
+- unsigned int num_counters;
+- const char *name;
+- int size;
+- void *ptmp;
+ struct xt_table *t;
+ const struct xt_table_info *private;
+ int ret = 0;
+ void *loc_cpu_entry;
+ struct arpt_entry *iter;
+ unsigned int addend;
+-#ifdef CONFIG_COMPAT
+- struct compat_xt_counters_info compat_tmp;
+
+- if (compat) {
+- ptmp = &compat_tmp;
+- size = sizeof(struct compat_xt_counters_info);
+- } else
+-#endif
+- {
+- ptmp = &tmp;
+- size = sizeof(struct xt_counters_info);
+- }
++ paddc = xt_copy_counters_from_user(user, len, &tmp, compat);
++ if (IS_ERR(paddc))
++ return PTR_ERR(paddc);
+
+- if (copy_from_user(ptmp, user, size) != 0)
+- return -EFAULT;
+-
+-#ifdef CONFIG_COMPAT
+- if (compat) {
+- num_counters = compat_tmp.num_counters;
+- name = compat_tmp.name;
+- } else
+-#endif
+- {
+- num_counters = tmp.num_counters;
+- name = tmp.name;
+- }
+-
+- if (len != size + num_counters * sizeof(struct xt_counters))
+- return -EINVAL;
+-
+- paddc = vmalloc(len - size);
+- if (!paddc)
+- return -ENOMEM;
+-
+- if (copy_from_user(paddc, user + size, len - size) != 0) {
+- ret = -EFAULT;
+- goto free;
+- }
+-
+- t = xt_find_table_lock(net, NFPROTO_ARP, name);
++ t = xt_find_table_lock(net, NFPROTO_ARP, tmp.name);
+ if (IS_ERR_OR_NULL(t)) {
+ ret = t ? PTR_ERR(t) : -ENOENT;
+ goto free;
+@@ -1175,7 +1142,7 @@ static int do_add_counters(struct net *net, const void __user *user,
+
+ local_bh_disable();
+ private = t->private;
+- if (private->number != num_counters) {
++ if (private->number != tmp.num_counters) {
+ ret = -EINVAL;
+ goto unlock_up_free;
+ }
+@@ -1201,6 +1168,18 @@ static int do_add_counters(struct net *net, const void __user *user,
+ }
+
+ #ifdef CONFIG_COMPAT
++struct compat_arpt_replace {
++ char name[XT_TABLE_MAXNAMELEN];
++ u32 valid_hooks;
++ u32 num_entries;
++ u32 size;
++ u32 hook_entry[NF_ARP_NUMHOOKS];
++ u32 underflow[NF_ARP_NUMHOOKS];
++ u32 num_counters;
++ compat_uptr_t counters;
++ struct compat_arpt_entry entries[0];
++};
++
+ static inline void compat_release_entry(struct compat_arpt_entry *e)
+ {
+ struct xt_entry_target *t;
+@@ -1209,24 +1188,22 @@ static inline void compat_release_entry(struct compat_arpt_entry *e)
+ module_put(t->u.kernel.target->me);
+ }
+
+-static inline int
++static int
+ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e,
+ struct xt_table_info *newinfo,
+ unsigned int *size,
+ const unsigned char *base,
+- const unsigned char *limit,
+- const unsigned int *hook_entries,
+- const unsigned int *underflows,
+- const char *name)
++ const unsigned char *limit)
+ {
+ struct xt_entry_target *t;
+ struct xt_target *target;
+ unsigned int entry_offset;
+- int ret, off, h;
++ int ret, off;
+
+ duprintf("check_compat_entry_size_and_hooks %p\n", e);
+ if ((unsigned long)e % __alignof__(struct compat_arpt_entry) != 0 ||
+- (unsigned char *)e + sizeof(struct compat_arpt_entry) >= limit) {
++ (unsigned char *)e + sizeof(struct compat_arpt_entry) >= limit ||
++ (unsigned char *)e + e->next_offset > limit) {
+ duprintf("Bad offset %p, limit = %p\n", e, limit);
+ return -EINVAL;
+ }
+@@ -1238,8 +1215,11 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e,
+ return -EINVAL;
+ }
+
+- /* For purposes of check_entry casting the compat entry is fine */
+- ret = check_entry((struct arpt_entry *)e, name);
++ if (!arp_checkentry(&e->arp))
++ return -EINVAL;
++
++ ret = xt_compat_check_entry_offsets(e, e->elems, e->target_offset,
++ e->next_offset);
+ if (ret)
+ return ret;
+
+@@ -1263,17 +1243,6 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e,
+ if (ret)
+ goto release_target;
+
+- /* Check hooks & underflows */
+- for (h = 0; h < NF_ARP_NUMHOOKS; h++) {
+- if ((unsigned char *)e - base == hook_entries[h])
+- newinfo->hook_entry[h] = hook_entries[h];
+- if ((unsigned char *)e - base == underflows[h])
+- newinfo->underflow[h] = underflows[h];
+- }
+-
+- /* Clear counters and comefrom */
+- memset(&e->counters, 0, sizeof(e->counters));
+- e->comefrom = 0;
+ return 0;
+
+ release_target:
+@@ -1282,18 +1251,17 @@ out:
+ return ret;
+ }
+
+-static int
++static void
+ compat_copy_entry_from_user(struct compat_arpt_entry *e, void **dstptr,
+- unsigned int *size, const char *name,
++ unsigned int *size,
+ struct xt_table_info *newinfo, unsigned char *base)
+ {
+ struct xt_entry_target *t;
+ struct xt_target *target;
+ struct arpt_entry *de;
+ unsigned int origsize;
+- int ret, h;
++ int h;
+
+- ret = 0;
+ origsize = *size;
+ de = (struct arpt_entry *)*dstptr;
+ memcpy(de, e, sizeof(struct arpt_entry));
+@@ -1314,144 +1282,81 @@ compat_copy_entry_from_user(struct compat_arpt_entry *e, void **dstptr,
+ if ((unsigned char *)de - base < newinfo->underflow[h])
+ newinfo->underflow[h] -= origsize - *size;
+ }
+- return ret;
+ }
+
+-static int translate_compat_table(const char *name,
+- unsigned int valid_hooks,
+- struct xt_table_info **pinfo,
++static int translate_compat_table(struct xt_table_info **pinfo,
+ void **pentry0,
+- unsigned int total_size,
+- unsigned int number,
+- unsigned int *hook_entries,
+- unsigned int *underflows)
++ const struct compat_arpt_replace *compatr)
+ {
+ unsigned int i, j;
+ struct xt_table_info *newinfo, *info;
+ void *pos, *entry0, *entry1;
+ struct compat_arpt_entry *iter0;
+- struct arpt_entry *iter1;
++ struct arpt_replace repl;
+ unsigned int size;
+ int ret = 0;
+
+ info = *pinfo;
+ entry0 = *pentry0;
+- size = total_size;
+- info->number = number;
+-
+- /* Init all hooks to impossible value. */
+- for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
+- info->hook_entry[i] = 0xFFFFFFFF;
+- info->underflow[i] = 0xFFFFFFFF;
+- }
++ size = compatr->size;
++ info->number = compatr->num_entries;
+
+ duprintf("translate_compat_table: size %u\n", info->size);
+ j = 0;
+ xt_compat_lock(NFPROTO_ARP);
+- xt_compat_init_offsets(NFPROTO_ARP, number);
++ xt_compat_init_offsets(NFPROTO_ARP, compatr->num_entries);
+ /* Walk through entries, checking offsets. */
+- xt_entry_foreach(iter0, entry0, total_size) {
++ xt_entry_foreach(iter0, entry0, compatr->size) {
+ ret = check_compat_entry_size_and_hooks(iter0, info, &size,
+ entry0,
+- entry0 + total_size,
+- hook_entries,
+- underflows,
+- name);
++ entry0 + compatr->size);
+ if (ret != 0)
+ goto out_unlock;
+ ++j;
+ }
+
+ ret = -EINVAL;
+- if (j != number) {
++ if (j != compatr->num_entries) {
+ duprintf("translate_compat_table: %u not %u entries\n",
+- j, number);
++ j, compatr->num_entries);
+ goto out_unlock;
+ }
+
+- /* Check hooks all assigned */
+- for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
+- /* Only hooks which are valid */
+- if (!(valid_hooks & (1 << i)))
+- continue;
+- if (info->hook_entry[i] == 0xFFFFFFFF) {
+- duprintf("Invalid hook entry %u %u\n",
+- i, hook_entries[i]);
+- goto out_unlock;
+- }
+- if (info->underflow[i] == 0xFFFFFFFF) {
+- duprintf("Invalid underflow %u %u\n",
+- i, underflows[i]);
+- goto out_unlock;
+- }
+- }
+-
+ ret = -ENOMEM;
+ newinfo = xt_alloc_table_info(size);
+ if (!newinfo)
+ goto out_unlock;
+
+- newinfo->number = number;
++ newinfo->number = compatr->num_entries;
+ for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
+ newinfo->hook_entry[i] = info->hook_entry[i];
+ newinfo->underflow[i] = info->underflow[i];
+ }
+ entry1 = newinfo->entries[raw_smp_processor_id()];
+ pos = entry1;
+- size = total_size;
+- xt_entry_foreach(iter0, entry0, total_size) {
+- ret = compat_copy_entry_from_user(iter0, &pos, &size,
+- name, newinfo, entry1);
+- if (ret != 0)
+- break;
+- }
++ size = compatr->size;
++ xt_entry_foreach(iter0, entry0, compatr->size)
++ compat_copy_entry_from_user(iter0, &pos, &size,
++ newinfo, entry1);
++
++ /* all module references in entry0 are now gone */
++
+ xt_compat_flush_offsets(NFPROTO_ARP);
+ xt_compat_unlock(NFPROTO_ARP);
+- if (ret)
+- goto free_newinfo;
+
+- ret = -ELOOP;
+- if (!mark_source_chains(newinfo, valid_hooks, entry1))
+- goto free_newinfo;
++ memcpy(&repl, compatr, sizeof(*compatr));
+
+- i = 0;
+- xt_entry_foreach(iter1, entry1, newinfo->size) {
+- ret = check_target(iter1, name);
+- if (ret != 0)
+- break;
+- ++i;
+- if (strcmp(arpt_get_target(iter1)->u.user.name,
+- XT_ERROR_TARGET) == 0)
+- ++newinfo->stacksize;
+- }
+- if (ret) {
+- /*
+- * The first i matches need cleanup_entry (calls ->destroy)
+- * because they had called ->check already. The other j-i
+- * entries need only release.
+- */
+- int skip = i;
+- j -= i;
+- xt_entry_foreach(iter0, entry0, newinfo->size) {
+- if (skip-- > 0)
+- continue;
+- if (j-- == 0)
+- break;
+- compat_release_entry(iter0);
+- }
+- xt_entry_foreach(iter1, entry1, newinfo->size) {
+- if (i-- == 0)
+- break;
+- cleanup_entry(iter1);
+- }
+- xt_free_table_info(newinfo);
+- return ret;
++ for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
++ repl.hook_entry[i] = newinfo->hook_entry[i];
++ repl.underflow[i] = newinfo->underflow[i];
+ }
+
+- /* And one copy for every other CPU */
+- for_each_possible_cpu(i)
+- if (newinfo->entries[i] && newinfo->entries[i] != entry1)
+- memcpy(newinfo->entries[i], entry1, newinfo->size);
++ repl.num_counters = 0;
++ repl.counters = NULL;
++ repl.size = newinfo->size;
++ ret = translate_table(newinfo, entry1, &repl);
++ if (ret)
++ goto free_newinfo;
+
+ *pinfo = newinfo;
+ *pentry0 = entry1;
+@@ -1460,31 +1365,18 @@ static int translate_compat_table(const char *name,
+
+ free_newinfo:
+ xt_free_table_info(newinfo);
+-out:
+- xt_entry_foreach(iter0, entry0, total_size) {
++ return ret;
++out_unlock:
++ xt_compat_flush_offsets(NFPROTO_ARP);
++ xt_compat_unlock(NFPROTO_ARP);
++ xt_entry_foreach(iter0, entry0, compatr->size) {
+ if (j-- == 0)
+ break;
+ compat_release_entry(iter0);
+ }
+ return ret;
+-out_unlock:
+- xt_compat_flush_offsets(NFPROTO_ARP);
+- xt_compat_unlock(NFPROTO_ARP);
+- goto out;
+ }
+
+-struct compat_arpt_replace {
+- char name[XT_TABLE_MAXNAMELEN];
+- u32 valid_hooks;
+- u32 num_entries;
+- u32 size;
+- u32 hook_entry[NF_ARP_NUMHOOKS];
+- u32 underflow[NF_ARP_NUMHOOKS];
+- u32 num_counters;
+- compat_uptr_t counters;
+- struct compat_arpt_entry entries[0];
+-};
+-
+ static int compat_do_replace(struct net *net, void __user *user,
+ unsigned int len)
+ {
+@@ -1518,10 +1410,7 @@ static int compat_do_replace(struct net *net, void __user *user,
+ goto free_newinfo;
+ }
+
+- ret = translate_compat_table(tmp.name, tmp.valid_hooks,
+- &newinfo, &loc_cpu_entry, tmp.size,
+- tmp.num_entries, tmp.hook_entry,
+- tmp.underflow);
++ ret = translate_compat_table(&newinfo, &loc_cpu_entry, &tmp);
+ if (ret != 0)
+ goto free_newinfo;
+
+diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
+index 2d0e265fef6e..3bcf28bf1525 100644
+--- a/net/ipv4/netfilter/ip_tables.c
++++ b/net/ipv4/netfilter/ip_tables.c
+@@ -168,11 +168,12 @@ get_entry(const void *base, unsigned int offset)
+
+ /* All zeroes == unconditional rule. */
+ /* Mildly perf critical (only if packet tracing is on) */
+-static inline bool unconditional(const struct ipt_ip *ip)
++static inline bool unconditional(const struct ipt_entry *e)
+ {
+ static const struct ipt_ip uncond;
+
+- return memcmp(ip, &uncond, sizeof(uncond)) == 0;
++ return e->target_offset == sizeof(struct ipt_entry) &&
++ memcmp(&e->ip, &uncond, sizeof(uncond)) == 0;
+ #undef FWINV
+ }
+
+@@ -229,11 +230,10 @@ get_chainname_rulenum(const struct ipt_entry *s, const struct ipt_entry *e,
+ } else if (s == e) {
+ (*rulenum)++;
+
+- if (s->target_offset == sizeof(struct ipt_entry) &&
++ if (unconditional(s) &&
+ strcmp(t->target.u.kernel.target->name,
+ XT_STANDARD_TARGET) == 0 &&
+- t->verdict < 0 &&
+- unconditional(&s->ip)) {
++ t->verdict < 0) {
+ /* Tail of chains: STANDARD target (return/policy) */
+ *comment = *chainname == hookname
+ ? comments[NF_IP_TRACE_COMMENT_POLICY]
+@@ -438,6 +438,18 @@ ipt_do_table(struct sk_buff *skb,
+ #endif
+ }
+
++static bool find_jump_target(const struct xt_table_info *t,
++ const struct ipt_entry *target)
++{
++ struct ipt_entry *iter;
++
++ xt_entry_foreach(iter, t->entries, t->size) {
++ if (iter == target)
++ return true;
++ }
++ return false;
++}
++
+ /* Figures out from what hook each rule can be called: returns 0 if
+ there are loops. Puts hook bitmask in comefrom. */
+ static int
+@@ -471,11 +483,10 @@ mark_source_chains(const struct xt_table_info *newinfo,
+ e->comefrom |= ((1 << hook) | (1 << NF_INET_NUMHOOKS));
+
+ /* Unconditional return/END. */
+- if ((e->target_offset == sizeof(struct ipt_entry) &&
++ if ((unconditional(e) &&
+ (strcmp(t->target.u.user.name,
+ XT_STANDARD_TARGET) == 0) &&
+- t->verdict < 0 && unconditional(&e->ip)) ||
+- visited) {
++ t->verdict < 0) || visited) {
+ unsigned int oldpos, size;
+
+ if ((strcmp(t->target.u.user.name,
+@@ -516,6 +527,8 @@ mark_source_chains(const struct xt_table_info *newinfo,
+ size = e->next_offset;
+ e = (struct ipt_entry *)
+ (entry0 + pos + size);
++ if (pos + size >= newinfo->size)
++ return 0;
+ e->counters.pcnt = pos;
+ pos += size;
+ } else {
+@@ -534,9 +547,15 @@ mark_source_chains(const struct xt_table_info *newinfo,
+ /* This a jump; chase it. */
+ duprintf("Jump rule %u -> %u\n",
+ pos, newpos);
++ e = (struct ipt_entry *)
++ (entry0 + newpos);
++ if (!find_jump_target(newinfo, e))
++ return 0;
+ } else {
+ /* ... this is a fallthru */
+ newpos = pos + e->next_offset;
++ if (newpos >= newinfo->size)
++ return 0;
+ }
+ e = (struct ipt_entry *)
+ (entry0 + newpos);
+@@ -564,27 +583,6 @@ static void cleanup_match(struct xt_entry_match *m, struct net *net)
+ }
+
+ static int
+-check_entry(const struct ipt_entry *e, const char *name)
+-{
+- const struct xt_entry_target *t;
+-
+- if (!ip_checkentry(&e->ip)) {
+- duprintf("ip check failed %p %s.\n", e, name);
+- return -EINVAL;
+- }
+-
+- if (e->target_offset + sizeof(struct xt_entry_target) >
+- e->next_offset)
+- return -EINVAL;
+-
+- t = ipt_get_target_c(e);
+- if (e->target_offset + t->u.target_size > e->next_offset)
+- return -EINVAL;
+-
+- return 0;
+-}
+-
+-static int
+ check_match(struct xt_entry_match *m, struct xt_mtchk_param *par)
+ {
+ const struct ipt_ip *ip = par->entryinfo;
+@@ -661,10 +659,6 @@ find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
+ struct xt_mtchk_param mtpar;
+ struct xt_entry_match *ematch;
+
+- ret = check_entry(e, name);
+- if (ret)
+- return ret;
+-
+ j = 0;
+ mtpar.net = net;
+ mtpar.table = name;
+@@ -708,7 +702,7 @@ static bool check_underflow(const struct ipt_entry *e)
+ const struct xt_entry_target *t;
+ unsigned int verdict;
+
+- if (!unconditional(&e->ip))
++ if (!unconditional(e))
+ return false;
+ t = ipt_get_target_c(e);
+ if (strcmp(t->u.user.name, XT_STANDARD_TARGET) != 0)
+@@ -728,9 +722,11 @@ check_entry_size_and_hooks(struct ipt_entry *e,
+ unsigned int valid_hooks)
+ {
+ unsigned int h;
++ int err;
+
+ if ((unsigned long)e % __alignof__(struct ipt_entry) != 0 ||
+- (unsigned char *)e + sizeof(struct ipt_entry) >= limit) {
++ (unsigned char *)e + sizeof(struct ipt_entry) >= limit ||
++ (unsigned char *)e + e->next_offset > limit) {
+ duprintf("Bad offset %p\n", e);
+ return -EINVAL;
+ }
+@@ -742,6 +738,14 @@ check_entry_size_and_hooks(struct ipt_entry *e,
+ return -EINVAL;
+ }
+
++ if (!ip_checkentry(&e->ip))
++ return -EINVAL;
++
++ err = xt_check_entry_offsets(e, e->elems, e->target_offset,
++ e->next_offset);
++ if (err)
++ return err;
++
+ /* Check hooks & underflows */
+ for (h = 0; h < NF_INET_NUMHOOKS; h++) {
+ if (!(valid_hooks & (1 << h)))
+@@ -750,9 +754,9 @@ check_entry_size_and_hooks(struct ipt_entry *e,
+ newinfo->hook_entry[h] = hook_entries[h];
+ if ((unsigned char *)e - base == underflows[h]) {
+ if (!check_underflow(e)) {
+- pr_err("Underflows must be unconditional and "
+- "use the STANDARD target with "
+- "ACCEPT/DROP\n");
++ pr_debug("Underflows must be unconditional and "
++ "use the STANDARD target with "
++ "ACCEPT/DROP\n");
+ return -EINVAL;
+ }
+ newinfo->underflow[h] = underflows[h];
+@@ -1306,56 +1310,18 @@ do_add_counters(struct net *net, const void __user *user,
+ unsigned int i, curcpu;
+ struct xt_counters_info tmp;
+ struct xt_counters *paddc;
+- unsigned int num_counters;
+- const char *name;
+- int size;
+- void *ptmp;
+ struct xt_table *t;
+ const struct xt_table_info *private;
+ int ret = 0;
+ void *loc_cpu_entry;
+ struct ipt_entry *iter;
+ unsigned int addend;
+-#ifdef CONFIG_COMPAT
+- struct compat_xt_counters_info compat_tmp;
+-
+- if (compat) {
+- ptmp = &compat_tmp;
+- size = sizeof(struct compat_xt_counters_info);
+- } else
+-#endif
+- {
+- ptmp = &tmp;
+- size = sizeof(struct xt_counters_info);
+- }
+-
+- if (copy_from_user(ptmp, user, size) != 0)
+- return -EFAULT;
+-
+-#ifdef CONFIG_COMPAT
+- if (compat) {
+- num_counters = compat_tmp.num_counters;
+- name = compat_tmp.name;
+- } else
+-#endif
+- {
+- num_counters = tmp.num_counters;
+- name = tmp.name;
+- }
+
+- if (len != size + num_counters * sizeof(struct xt_counters))
+- return -EINVAL;
+-
+- paddc = vmalloc(len - size);
+- if (!paddc)
+- return -ENOMEM;
+-
+- if (copy_from_user(paddc, user + size, len - size) != 0) {
+- ret = -EFAULT;
+- goto free;
+- }
++ paddc = xt_copy_counters_from_user(user, len, &tmp, compat);
++ if (IS_ERR(paddc))
++ return PTR_ERR(paddc);
+
+- t = xt_find_table_lock(net, AF_INET, name);
++ t = xt_find_table_lock(net, AF_INET, tmp.name);
+ if (IS_ERR_OR_NULL(t)) {
+ ret = t ? PTR_ERR(t) : -ENOENT;
+ goto free;
+@@ -1363,7 +1329,7 @@ do_add_counters(struct net *net, const void __user *user,
+
+ local_bh_disable();
+ private = t->private;
+- if (private->number != num_counters) {
++ if (private->number != tmp.num_counters) {
+ ret = -EINVAL;
+ goto unlock_up_free;
+ }
+@@ -1442,7 +1408,6 @@ compat_copy_entry_to_user(struct ipt_entry *e, void __user **dstptr,
+
+ static int
+ compat_find_calc_match(struct xt_entry_match *m,
+- const char *name,
+ const struct ipt_ip *ip,
+ unsigned int hookmask,
+ int *size)
+@@ -1478,21 +1443,19 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
+ struct xt_table_info *newinfo,
+ unsigned int *size,
+ const unsigned char *base,
+- const unsigned char *limit,
+- const unsigned int *hook_entries,
+- const unsigned int *underflows,
+- const char *name)
++ const unsigned char *limit)
+ {
+ struct xt_entry_match *ematch;
+ struct xt_entry_target *t;
+ struct xt_target *target;
+ unsigned int entry_offset;
+ unsigned int j;
+- int ret, off, h;
++ int ret, off;
+
+ duprintf("check_compat_entry_size_and_hooks %p\n", e);
+ if ((unsigned long)e % __alignof__(struct compat_ipt_entry) != 0 ||
+- (unsigned char *)e + sizeof(struct compat_ipt_entry) >= limit) {
++ (unsigned char *)e + sizeof(struct compat_ipt_entry) >= limit ||
++ (unsigned char *)e + e->next_offset > limit) {
+ duprintf("Bad offset %p, limit = %p\n", e, limit);
+ return -EINVAL;
+ }
+@@ -1504,8 +1467,11 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
+ return -EINVAL;
+ }
+
+- /* For purposes of check_entry casting the compat entry is fine */
+- ret = check_entry((struct ipt_entry *)e, name);
++ if (!ip_checkentry(&e->ip))
++ return -EINVAL;
++
++ ret = xt_compat_check_entry_offsets(e, e->elems,
++ e->target_offset, e->next_offset);
+ if (ret)
+ return ret;
+
+@@ -1513,8 +1479,8 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
+ entry_offset = (void *)e - (void *)base;
+ j = 0;
+ xt_ematch_foreach(ematch, e) {
+- ret = compat_find_calc_match(ematch, name,
+- &e->ip, e->comefrom, &off);
++ ret = compat_find_calc_match(ematch, &e->ip, e->comefrom,
++ &off);
+ if (ret != 0)
+ goto release_matches;
+ ++j;
+@@ -1537,17 +1503,6 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
+ if (ret)
+ goto out;
+
+- /* Check hooks & underflows */
+- for (h = 0; h < NF_INET_NUMHOOKS; h++) {
+- if ((unsigned char *)e - base == hook_entries[h])
+- newinfo->hook_entry[h] = hook_entries[h];
+- if ((unsigned char *)e - base == underflows[h])
+- newinfo->underflow[h] = underflows[h];
+- }
+-
+- /* Clear counters and comefrom */
+- memset(&e->counters, 0, sizeof(e->counters));
+- e->comefrom = 0;
+ return 0;
+
+ out:
+@@ -1561,19 +1516,18 @@ release_matches:
+ return ret;
+ }
+
+-static int
++static void
+ compat_copy_entry_from_user(struct compat_ipt_entry *e, void **dstptr,
+- unsigned int *size, const char *name,
++ unsigned int *size,
+ struct xt_table_info *newinfo, unsigned char *base)
+ {
+ struct xt_entry_target *t;
+ struct xt_target *target;
+ struct ipt_entry *de;
+ unsigned int origsize;
+- int ret, h;
++ int h;
+ struct xt_entry_match *ematch;
+
+- ret = 0;
+ origsize = *size;
+ de = (struct ipt_entry *)*dstptr;
+ memcpy(de, e, sizeof(struct ipt_entry));
+@@ -1582,198 +1536,104 @@ compat_copy_entry_from_user(struct compat_ipt_entry *e, void **dstptr,
+ *dstptr += sizeof(struct ipt_entry);
+ *size += sizeof(struct ipt_entry) - sizeof(struct compat_ipt_entry);
+
+- xt_ematch_foreach(ematch, e) {
+- ret = xt_compat_match_from_user(ematch, dstptr, size);
+- if (ret != 0)
+- return ret;
+- }
++ xt_ematch_foreach(ematch, e)
++ xt_compat_match_from_user(ematch, dstptr, size);
++
+ de->target_offset = e->target_offset - (origsize - *size);
+ t = compat_ipt_get_target(e);
+ target = t->u.kernel.target;
+ xt_compat_target_from_user(t, dstptr, size);
+
+ de->next_offset = e->next_offset - (origsize - *size);
++
+ for (h = 0; h < NF_INET_NUMHOOKS; h++) {
+ if ((unsigned char *)de - base < newinfo->hook_entry[h])
+ newinfo->hook_entry[h] -= origsize - *size;
+ if ((unsigned char *)de - base < newinfo->underflow[h])
+ newinfo->underflow[h] -= origsize - *size;
+ }
+- return ret;
+-}
+-
+-static int
+-compat_check_entry(struct ipt_entry *e, struct net *net, const char *name)
+-{
+- struct xt_entry_match *ematch;
+- struct xt_mtchk_param mtpar;
+- unsigned int j;
+- int ret = 0;
+-
+- j = 0;
+- mtpar.net = net;
+- mtpar.table = name;
+- mtpar.entryinfo = &e->ip;
+- mtpar.hook_mask = e->comefrom;
+- mtpar.family = NFPROTO_IPV4;
+- xt_ematch_foreach(ematch, e) {
+- ret = check_match(ematch, &mtpar);
+- if (ret != 0)
+- goto cleanup_matches;
+- ++j;
+- }
+-
+- ret = check_target(e, net, name);
+- if (ret)
+- goto cleanup_matches;
+- return 0;
+-
+- cleanup_matches:
+- xt_ematch_foreach(ematch, e) {
+- if (j-- == 0)
+- break;
+- cleanup_match(ematch, net);
+- }
+- return ret;
+ }
+
+ static int
+ translate_compat_table(struct net *net,
+- const char *name,
+- unsigned int valid_hooks,
+ struct xt_table_info **pinfo,
+ void **pentry0,
+- unsigned int total_size,
+- unsigned int number,
+- unsigned int *hook_entries,
+- unsigned int *underflows)
++ const struct compat_ipt_replace *compatr)
+ {
+ unsigned int i, j;
+ struct xt_table_info *newinfo, *info;
+ void *pos, *entry0, *entry1;
+ struct compat_ipt_entry *iter0;
+- struct ipt_entry *iter1;
++ struct ipt_replace repl;
+ unsigned int size;
+ int ret;
+
+ info = *pinfo;
+ entry0 = *pentry0;
+- size = total_size;
+- info->number = number;
+-
+- /* Init all hooks to impossible value. */
+- for (i = 0; i < NF_INET_NUMHOOKS; i++) {
+- info->hook_entry[i] = 0xFFFFFFFF;
+- info->underflow[i] = 0xFFFFFFFF;
+- }
++ size = compatr->size;
++ info->number = compatr->num_entries;
+
+ duprintf("translate_compat_table: size %u\n", info->size);
+ j = 0;
+ xt_compat_lock(AF_INET);
+- xt_compat_init_offsets(AF_INET, number);
++ xt_compat_init_offsets(AF_INET, compatr->num_entries);
+ /* Walk through entries, checking offsets. */
+- xt_entry_foreach(iter0, entry0, total_size) {
++ xt_entry_foreach(iter0, entry0, compatr->size) {
+ ret = check_compat_entry_size_and_hooks(iter0, info, &size,
+ entry0,
+- entry0 + total_size,
+- hook_entries,
+- underflows,
+- name);
++ entry0 + compatr->size);
+ if (ret != 0)
+ goto out_unlock;
+ ++j;
+ }
+
+ ret = -EINVAL;
+- if (j != number) {
++ if (j != compatr->num_entries) {
+ duprintf("translate_compat_table: %u not %u entries\n",
+- j, number);
++ j, compatr->num_entries);
+ goto out_unlock;
+ }
+
+- /* Check hooks all assigned */
+- for (i = 0; i < NF_INET_NUMHOOKS; i++) {
+- /* Only hooks which are valid */
+- if (!(valid_hooks & (1 << i)))
+- continue;
+- if (info->hook_entry[i] == 0xFFFFFFFF) {
+- duprintf("Invalid hook entry %u %u\n",
+- i, hook_entries[i]);
+- goto out_unlock;
+- }
+- if (info->underflow[i] == 0xFFFFFFFF) {
+- duprintf("Invalid underflow %u %u\n",
+- i, underflows[i]);
+- goto out_unlock;
+- }
+- }
+-
+ ret = -ENOMEM;
+ newinfo = xt_alloc_table_info(size);
+ if (!newinfo)
+ goto out_unlock;
+
+- newinfo->number = number;
++ newinfo->number = compatr->num_entries;
+ for (i = 0; i < NF_INET_NUMHOOKS; i++) {
+- newinfo->hook_entry[i] = info->hook_entry[i];
+- newinfo->underflow[i] = info->underflow[i];
++ newinfo->hook_entry[i] = compatr->hook_entry[i];
++ newinfo->underflow[i] = compatr->underflow[i];
+ }
+ entry1 = newinfo->entries[raw_smp_processor_id()];
+ pos = entry1;
+- size = total_size;
+- xt_entry_foreach(iter0, entry0, total_size) {
+- ret = compat_copy_entry_from_user(iter0, &pos, &size,
+- name, newinfo, entry1);
+- if (ret != 0)
+- break;
+- }
++ size = compatr->size;
++ xt_entry_foreach(iter0, entry0, compatr->size)
++ compat_copy_entry_from_user(iter0, &pos, &size,
++ newinfo, entry1);
++
++ /* all module references in entry0 are now gone.
++ * entry1/newinfo contains a 64bit ruleset that looks exactly as
++ * generated by 64bit userspace.
++ *
++ * Call standard translate_table() to validate all hook_entrys,
++ * underflows, check for loops, etc.
++ */
+ xt_compat_flush_offsets(AF_INET);
+ xt_compat_unlock(AF_INET);
+- if (ret)
+- goto free_newinfo;
+
+- ret = -ELOOP;
+- if (!mark_source_chains(newinfo, valid_hooks, entry1))
+- goto free_newinfo;
++ memcpy(&repl, compatr, sizeof(*compatr));
+
+- i = 0;
+- xt_entry_foreach(iter1, entry1, newinfo->size) {
+- ret = compat_check_entry(iter1, net, name);
+- if (ret != 0)
+- break;
+- ++i;
+- if (strcmp(ipt_get_target(iter1)->u.user.name,
+- XT_ERROR_TARGET) == 0)
+- ++newinfo->stacksize;
+- }
+- if (ret) {
+- /*
+- * The first i matches need cleanup_entry (calls ->destroy)
+- * because they had called ->check already. The other j-i
+- * entries need only release.
+- */
+- int skip = i;
+- j -= i;
+- xt_entry_foreach(iter0, entry0, newinfo->size) {
+- if (skip-- > 0)
+- continue;
+- if (j-- == 0)
+- break;
+- compat_release_entry(iter0);
+- }
+- xt_entry_foreach(iter1, entry1, newinfo->size) {
+- if (i-- == 0)
+- break;
+- cleanup_entry(iter1, net);
+- }
+- xt_free_table_info(newinfo);
+- return ret;
++ for (i = 0; i < NF_INET_NUMHOOKS; i++) {
++ repl.hook_entry[i] = newinfo->hook_entry[i];
++ repl.underflow[i] = newinfo->underflow[i];
+ }
+
+- /* And one copy for every other CPU */
+- for_each_possible_cpu(i)
+- if (newinfo->entries[i] && newinfo->entries[i] != entry1)
+- memcpy(newinfo->entries[i], entry1, newinfo->size);
++ repl.num_counters = 0;
++ repl.counters = NULL;
++ repl.size = newinfo->size;
++ ret = translate_table(net, newinfo, entry1, &repl);
++ if (ret)
++ goto free_newinfo;
+
+ *pinfo = newinfo;
+ *pentry0 = entry1;
+@@ -1782,17 +1642,16 @@ translate_compat_table(struct net *net,
+
+ free_newinfo:
+ xt_free_table_info(newinfo);
+-out:
+- xt_entry_foreach(iter0, entry0, total_size) {
++ return ret;
++out_unlock:
++ xt_compat_flush_offsets(AF_INET);
++ xt_compat_unlock(AF_INET);
++ xt_entry_foreach(iter0, entry0, compatr->size) {
+ if (j-- == 0)
+ break;
+ compat_release_entry(iter0);
+ }
+ return ret;
+-out_unlock:
+- xt_compat_flush_offsets(AF_INET);
+- xt_compat_unlock(AF_INET);
+- goto out;
+ }
+
+ static int
+@@ -1829,10 +1688,7 @@ compat_do_replace(struct net *net, void __user *user, unsigned int len)
+ goto free_newinfo;
+ }
+
+- ret = translate_compat_table(net, tmp.name, tmp.valid_hooks,
+- &newinfo, &loc_cpu_entry, tmp.size,
+- tmp.num_entries, tmp.hook_entry,
+- tmp.underflow);
++ ret = translate_compat_table(net, &newinfo, &loc_cpu_entry, &tmp);
+ if (ret != 0)
+ goto free_newinfo;
+
+diff --git a/net/ipv4/netfilter/nf_nat_masquerade_ipv4.c b/net/ipv4/netfilter/nf_nat_masquerade_ipv4.c
+index c6eb42100e9a..ea91058b5f6f 100644
+--- a/net/ipv4/netfilter/nf_nat_masquerade_ipv4.c
++++ b/net/ipv4/netfilter/nf_nat_masquerade_ipv4.c
+@@ -108,10 +108,18 @@ static int masq_inet_event(struct notifier_block *this,
+ unsigned long event,
+ void *ptr)
+ {
+- struct net_device *dev = ((struct in_ifaddr *)ptr)->ifa_dev->dev;
++ struct in_device *idev = ((struct in_ifaddr *)ptr)->ifa_dev;
+ struct netdev_notifier_info info;
+
+- netdev_notifier_info_init(&info, dev);
++ /* The masq_dev_notifier will catch the case of the device going
++ * down. So if the inetdev is dead and being destroyed we have
++ * no work to do. Otherwise this is an individual address removal
++ * and we have to perform the flush.
++ */
++ if (idev->dead)
++ return NOTIFY_DONE;
++
++ netdev_notifier_info_init(&info, idev->dev);
+ return masq_device_event(this, event, &info);
+ }
+
+diff --git a/net/ipv4/route.c b/net/ipv4/route.c
+index 1d3cdb4d4ebc..eb1d9839a257 100644
+--- a/net/ipv4/route.c
++++ b/net/ipv4/route.c
+@@ -1976,6 +1976,18 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
+ */
+ if (fi && res->prefixlen < 4)
+ fi = NULL;
++ } else if ((type == RTN_LOCAL) && (orig_oif != 0) &&
++ (orig_oif != dev_out->ifindex)) {
++ /* For local routes that require a particular output interface
++ * we do not want to cache the result. Caching the result
++ * causes incorrect behaviour when there are multiple source
++ * addresses on the interface, the end result being that if the
++ * intended recipient is waiting on that interface for the
++ * packet he won't receive it because it will be delivered on
++ * the loopback interface and the IP_PKTINFO ipi_ifindex will
++ * be set to the loopback interface as well.
++ */
++ fi = NULL;
+ }
+
+ fnhe = NULL;
+diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
+index a51d63a43e33..9c840c5c6047 100644
+--- a/net/ipv4/tcp_metrics.c
++++ b/net/ipv4/tcp_metrics.c
+@@ -566,7 +566,7 @@ reset:
+ */
+ if (crtt > tp->srtt_us) {
+ /* Set RTO like tcp_rtt_estimator(), but from cached RTT. */
+- crtt /= 8 * USEC_PER_MSEC;
++ crtt /= 8 * USEC_PER_SEC / HZ;
+ inet_csk(sk)->icsk_rto = crtt + max(2 * crtt, tcp_rto_min(sk));
+ } else if (tp->srtt_us == 0) {
+ /* RFC6298: 5.7 We've failed to get a valid RTT sample from
+diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
+index 1ea4322c3b0c..ae66c8426ad0 100644
+--- a/net/ipv4/tcp_output.c
++++ b/net/ipv4/tcp_output.c
+@@ -2627,8 +2627,10 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
+ */
+ if (unlikely((NET_IP_ALIGN && ((unsigned long)skb->data & 3)) ||
+ skb_headroom(skb) >= 0xFFFF)) {
+- struct sk_buff *nskb = __pskb_copy(skb, MAX_TCP_HEADER,
+- GFP_ATOMIC);
++ struct sk_buff *nskb;
++
++ skb_mstamp_get(&skb->skb_mstamp);
++ nskb = __pskb_copy(skb, MAX_TCP_HEADER, GFP_ATOMIC);
+ err = nskb ? tcp_transmit_skb(sk, nskb, 0, GFP_ATOMIC) :
+ -ENOBUFS;
+ } else {
+diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
+index a390174b96de..031752efe1ab 100644
+--- a/net/ipv4/udp.c
++++ b/net/ipv4/udp.c
+@@ -1979,10 +1979,14 @@ void udp_v4_early_demux(struct sk_buff *skb)
+ if (!in_dev)
+ return;
+
+- ours = ip_check_mc_rcu(in_dev, iph->daddr, iph->saddr,
+- iph->protocol);
+- if (!ours)
+- return;
++ /* we are supposed to accept bcast packets */
++ if (skb->pkt_type == PACKET_MULTICAST) {
++ ours = ip_check_mc_rcu(in_dev, iph->daddr, iph->saddr,
++ iph->protocol);
++ if (!ours)
++ return;
++ }
++
+ sk = __udp4_lib_mcast_demux_lookup(net, uh->dest, iph->daddr,
+ uh->source, iph->saddr, dif);
+ } else if (skb->pkt_type == PACKET_HOST) {
+diff --git a/net/ipv4/udp_tunnel.c b/net/ipv4/udp_tunnel.c
+index 6bb98cc193c9..7b534ac04056 100644
+--- a/net/ipv4/udp_tunnel.c
++++ b/net/ipv4/udp_tunnel.c
+@@ -90,6 +90,8 @@ int udp_tunnel_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,
+ uh->source = src_port;
+ uh->len = htons(skb->len);
+
++ memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
++
+ udp_set_csum(nocheck, skb, src, dst, skb->len);
+
+ return iptunnel_xmit(sk, rt, skb, src, dst, IPPROTO_UDP,
+diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c
+index 5c5d23e59da5..9508a20fbf61 100644
+--- a/net/ipv6/exthdrs_core.c
++++ b/net/ipv6/exthdrs_core.c
+@@ -257,7 +257,11 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
+ *fragoff = _frag_off;
+ return hp->nexthdr;
+ }
+- return -ENOENT;
++ if (!found)
++ return -ENOENT;
++ if (fragoff)
++ *fragoff = _frag_off;
++ break;
+ }
+ hdrlen = 8;
+ } else if (nexthdr == NEXTHDR_AUTH) {
+diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
+index 76be7d311cc4..b1311da5d7b8 100644
+--- a/net/ipv6/ip6_gre.c
++++ b/net/ipv6/ip6_gre.c
+@@ -783,6 +783,8 @@ static inline int ip6gre_xmit_ipv4(struct sk_buff *skb, struct net_device *dev)
+ __u32 mtu;
+ int err;
+
++ memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
++
+ if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
+ encap_limit = t->parms.encap_limit;
+
+diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
+index 5cafd92c2312..c7c2c33aa4af 100644
+--- a/net/ipv6/ip6_tunnel.c
++++ b/net/ipv6/ip6_tunnel.c
+@@ -284,12 +284,12 @@ static int ip6_tnl_create2(struct net_device *dev)
+
+ t = netdev_priv(dev);
+
++ dev->rtnl_link_ops = &ip6_link_ops;
+ err = register_netdevice(dev);
+ if (err < 0)
+ goto out;
+
+ strcpy(t->parms.name, dev->name);
+- dev->rtnl_link_ops = &ip6_link_ops;
+
+ dev_hold(dev);
+ ip6_tnl_link(ip6n, t);
+@@ -1124,6 +1124,8 @@ ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
+ u8 tproto;
+ int err;
+
++ memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
++
+ tproto = ACCESS_ONCE(t->parms.proto);
+ if (tproto != IPPROTO_IPIP && tproto != 0)
+ return -1;
+diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
+index 41e3b5ee8d0b..9a63110b6548 100644
+--- a/net/ipv6/mcast.c
++++ b/net/ipv6/mcast.c
+@@ -1574,9 +1574,8 @@ static struct sk_buff *mld_newpack(struct inet6_dev *idev, unsigned int mtu)
+ return NULL;
+
+ skb->priority = TC_PRIO_CONTROL;
+- skb->reserved_tailroom = skb_end_offset(skb) -
+- min(mtu, skb_end_offset(skb));
+ skb_reserve(skb, hlen);
++ skb_tailroom_reserve(skb, mtu, tlen);
+
+ if (__ipv6_get_lladdr(idev, &addr_buf, IFA_F_TENTATIVE)) {
+ /* <draft-ietf-magma-mld-source-05.txt>:
+diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
+index 62f5b0d0bc9b..5254d76dfce8 100644
+--- a/net/ipv6/netfilter/ip6_tables.c
++++ b/net/ipv6/netfilter/ip6_tables.c
+@@ -198,11 +198,12 @@ get_entry(const void *base, unsigned int offset)
+
+ /* All zeroes == unconditional rule. */
+ /* Mildly perf critical (only if packet tracing is on) */
+-static inline bool unconditional(const struct ip6t_ip6 *ipv6)
++static inline bool unconditional(const struct ip6t_entry *e)
+ {
+ static const struct ip6t_ip6 uncond;
+
+- return memcmp(ipv6, &uncond, sizeof(uncond)) == 0;
++ return e->target_offset == sizeof(struct ip6t_entry) &&
++ memcmp(&e->ipv6, &uncond, sizeof(uncond)) == 0;
+ }
+
+ static inline const struct xt_entry_target *
+@@ -258,11 +259,10 @@ get_chainname_rulenum(const struct ip6t_entry *s, const struct ip6t_entry *e,
+ } else if (s == e) {
+ (*rulenum)++;
+
+- if (s->target_offset == sizeof(struct ip6t_entry) &&
++ if (unconditional(s) &&
+ strcmp(t->target.u.kernel.target->name,
+ XT_STANDARD_TARGET) == 0 &&
+- t->verdict < 0 &&
+- unconditional(&s->ipv6)) {
++ t->verdict < 0) {
+ /* Tail of chains: STANDARD target (return/policy) */
+ *comment = *chainname == hookname
+ ? comments[NF_IP6_TRACE_COMMENT_POLICY]
+@@ -451,6 +451,18 @@ ip6t_do_table(struct sk_buff *skb,
+ #endif
+ }
+
++static bool find_jump_target(const struct xt_table_info *t,
++ const struct ip6t_entry *target)
++{
++ struct ip6t_entry *iter;
++
++ xt_entry_foreach(iter, t->entries, t->size) {
++ if (iter == target)
++ return true;
++ }
++ return false;
++}
++
+ /* Figures out from what hook each rule can be called: returns 0 if
+ there are loops. Puts hook bitmask in comefrom. */
+ static int
+@@ -484,11 +496,10 @@ mark_source_chains(const struct xt_table_info *newinfo,
+ e->comefrom |= ((1 << hook) | (1 << NF_INET_NUMHOOKS));
+
+ /* Unconditional return/END. */
+- if ((e->target_offset == sizeof(struct ip6t_entry) &&
++ if ((unconditional(e) &&
+ (strcmp(t->target.u.user.name,
+ XT_STANDARD_TARGET) == 0) &&
+- t->verdict < 0 &&
+- unconditional(&e->ipv6)) || visited) {
++ t->verdict < 0) || visited) {
+ unsigned int oldpos, size;
+
+ if ((strcmp(t->target.u.user.name,
+@@ -529,6 +540,8 @@ mark_source_chains(const struct xt_table_info *newinfo,
+ size = e->next_offset;
+ e = (struct ip6t_entry *)
+ (entry0 + pos + size);
++ if (pos + size >= newinfo->size)
++ return 0;
+ e->counters.pcnt = pos;
+ pos += size;
+ } else {
+@@ -547,9 +560,15 @@ mark_source_chains(const struct xt_table_info *newinfo,
+ /* This a jump; chase it. */
+ duprintf("Jump rule %u -> %u\n",
+ pos, newpos);
++ e = (struct ip6t_entry *)
++ (entry0 + newpos);
++ if (!find_jump_target(newinfo, e))
++ return 0;
+ } else {
+ /* ... this is a fallthru */
+ newpos = pos + e->next_offset;
++ if (newpos >= newinfo->size)
++ return 0;
+ }
+ e = (struct ip6t_entry *)
+ (entry0 + newpos);
+@@ -576,27 +595,6 @@ static void cleanup_match(struct xt_entry_match *m, struct net *net)
+ module_put(par.match->me);
+ }
+
+-static int
+-check_entry(const struct ip6t_entry *e, const char *name)
+-{
+- const struct xt_entry_target *t;
+-
+- if (!ip6_checkentry(&e->ipv6)) {
+- duprintf("ip_tables: ip check failed %p %s.\n", e, name);
+- return -EINVAL;
+- }
+-
+- if (e->target_offset + sizeof(struct xt_entry_target) >
+- e->next_offset)
+- return -EINVAL;
+-
+- t = ip6t_get_target_c(e);
+- if (e->target_offset + t->u.target_size > e->next_offset)
+- return -EINVAL;
+-
+- return 0;
+-}
+-
+ static int check_match(struct xt_entry_match *m, struct xt_mtchk_param *par)
+ {
+ const struct ip6t_ip6 *ipv6 = par->entryinfo;
+@@ -675,10 +673,6 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
+ struct xt_mtchk_param mtpar;
+ struct xt_entry_match *ematch;
+
+- ret = check_entry(e, name);
+- if (ret)
+- return ret;
+-
+ j = 0;
+ mtpar.net = net;
+ mtpar.table = name;
+@@ -722,7 +716,7 @@ static bool check_underflow(const struct ip6t_entry *e)
+ const struct xt_entry_target *t;
+ unsigned int verdict;
+
+- if (!unconditional(&e->ipv6))
++ if (!unconditional(e))
+ return false;
+ t = ip6t_get_target_c(e);
+ if (strcmp(t->u.user.name, XT_STANDARD_TARGET) != 0)
+@@ -742,9 +736,11 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
+ unsigned int valid_hooks)
+ {
+ unsigned int h;
++ int err;
+
+ if ((unsigned long)e % __alignof__(struct ip6t_entry) != 0 ||
+- (unsigned char *)e + sizeof(struct ip6t_entry) >= limit) {
++ (unsigned char *)e + sizeof(struct ip6t_entry) >= limit ||
++ (unsigned char *)e + e->next_offset > limit) {
+ duprintf("Bad offset %p\n", e);
+ return -EINVAL;
+ }
+@@ -756,6 +752,14 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
+ return -EINVAL;
+ }
+
++ if (!ip6_checkentry(&e->ipv6))
++ return -EINVAL;
++
++ err = xt_check_entry_offsets(e, e->elems, e->target_offset,
++ e->next_offset);
++ if (err)
++ return err;
++
+ /* Check hooks & underflows */
+ for (h = 0; h < NF_INET_NUMHOOKS; h++) {
+ if (!(valid_hooks & (1 << h)))
+@@ -764,9 +768,9 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
+ newinfo->hook_entry[h] = hook_entries[h];
+ if ((unsigned char *)e - base == underflows[h]) {
+ if (!check_underflow(e)) {
+- pr_err("Underflows must be unconditional and "
+- "use the STANDARD target with "
+- "ACCEPT/DROP\n");
++ pr_debug("Underflows must be unconditional and "
++ "use the STANDARD target with "
++ "ACCEPT/DROP\n");
+ return -EINVAL;
+ }
+ newinfo->underflow[h] = underflows[h];
+@@ -1319,56 +1323,17 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len,
+ unsigned int i, curcpu;
+ struct xt_counters_info tmp;
+ struct xt_counters *paddc;
+- unsigned int num_counters;
+- char *name;
+- int size;
+- void *ptmp;
+ struct xt_table *t;
+ const struct xt_table_info *private;
+ int ret = 0;
+ const void *loc_cpu_entry;
+ struct ip6t_entry *iter;
+ unsigned int addend;
+-#ifdef CONFIG_COMPAT
+- struct compat_xt_counters_info compat_tmp;
+-
+- if (compat) {
+- ptmp = &compat_tmp;
+- size = sizeof(struct compat_xt_counters_info);
+- } else
+-#endif
+- {
+- ptmp = &tmp;
+- size = sizeof(struct xt_counters_info);
+- }
+-
+- if (copy_from_user(ptmp, user, size) != 0)
+- return -EFAULT;
+
+-#ifdef CONFIG_COMPAT
+- if (compat) {
+- num_counters = compat_tmp.num_counters;
+- name = compat_tmp.name;
+- } else
+-#endif
+- {
+- num_counters = tmp.num_counters;
+- name = tmp.name;
+- }
+-
+- if (len != size + num_counters * sizeof(struct xt_counters))
+- return -EINVAL;
+-
+- paddc = vmalloc(len - size);
+- if (!paddc)
+- return -ENOMEM;
+-
+- if (copy_from_user(paddc, user + size, len - size) != 0) {
+- ret = -EFAULT;
+- goto free;
+- }
+-
+- t = xt_find_table_lock(net, AF_INET6, name);
++ paddc = xt_copy_counters_from_user(user, len, &tmp, compat);
++ if (IS_ERR(paddc))
++ return PTR_ERR(paddc);
++ t = xt_find_table_lock(net, AF_INET6, tmp.name);
+ if (IS_ERR_OR_NULL(t)) {
+ ret = t ? PTR_ERR(t) : -ENOENT;
+ goto free;
+@@ -1377,7 +1342,7 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len,
+
+ local_bh_disable();
+ private = t->private;
+- if (private->number != num_counters) {
++ if (private->number != tmp.num_counters) {
+ ret = -EINVAL;
+ goto unlock_up_free;
+ }
+@@ -1457,7 +1422,6 @@ compat_copy_entry_to_user(struct ip6t_entry *e, void __user **dstptr,
+
+ static int
+ compat_find_calc_match(struct xt_entry_match *m,
+- const char *name,
+ const struct ip6t_ip6 *ipv6,
+ unsigned int hookmask,
+ int *size)
+@@ -1493,21 +1457,19 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
+ struct xt_table_info *newinfo,
+ unsigned int *size,
+ const unsigned char *base,
+- const unsigned char *limit,
+- const unsigned int *hook_entries,
+- const unsigned int *underflows,
+- const char *name)
++ const unsigned char *limit)
+ {
+ struct xt_entry_match *ematch;
+ struct xt_entry_target *t;
+ struct xt_target *target;
+ unsigned int entry_offset;
+ unsigned int j;
+- int ret, off, h;
++ int ret, off;
+
+ duprintf("check_compat_entry_size_and_hooks %p\n", e);
+ if ((unsigned long)e % __alignof__(struct compat_ip6t_entry) != 0 ||
+- (unsigned char *)e + sizeof(struct compat_ip6t_entry) >= limit) {
++ (unsigned char *)e + sizeof(struct compat_ip6t_entry) >= limit ||
++ (unsigned char *)e + e->next_offset > limit) {
+ duprintf("Bad offset %p, limit = %p\n", e, limit);
+ return -EINVAL;
+ }
+@@ -1519,8 +1481,11 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
+ return -EINVAL;
+ }
+
+- /* For purposes of check_entry casting the compat entry is fine */
+- ret = check_entry((struct ip6t_entry *)e, name);
++ if (!ip6_checkentry(&e->ipv6))
++ return -EINVAL;
++
++ ret = xt_compat_check_entry_offsets(e, e->elems,
++ e->target_offset, e->next_offset);
+ if (ret)
+ return ret;
+
+@@ -1528,8 +1493,8 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
+ entry_offset = (void *)e - (void *)base;
+ j = 0;
+ xt_ematch_foreach(ematch, e) {
+- ret = compat_find_calc_match(ematch, name,
+- &e->ipv6, e->comefrom, &off);
++ ret = compat_find_calc_match(ematch, &e->ipv6, e->comefrom,
++ &off);
+ if (ret != 0)
+ goto release_matches;
+ ++j;
+@@ -1552,17 +1517,6 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
+ if (ret)
+ goto out;
+
+- /* Check hooks & underflows */
+- for (h = 0; h < NF_INET_NUMHOOKS; h++) {
+- if ((unsigned char *)e - base == hook_entries[h])
+- newinfo->hook_entry[h] = hook_entries[h];
+- if ((unsigned char *)e - base == underflows[h])
+- newinfo->underflow[h] = underflows[h];
+- }
+-
+- /* Clear counters and comefrom */
+- memset(&e->counters, 0, sizeof(e->counters));
+- e->comefrom = 0;
+ return 0;
+
+ out:
+@@ -1576,18 +1530,17 @@ release_matches:
+ return ret;
+ }
+
+-static int
++static void
+ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
+- unsigned int *size, const char *name,
++ unsigned int *size,
+ struct xt_table_info *newinfo, unsigned char *base)
+ {
+ struct xt_entry_target *t;
+ struct ip6t_entry *de;
+ unsigned int origsize;
+- int ret, h;
++ int h;
+ struct xt_entry_match *ematch;
+
+- ret = 0;
+ origsize = *size;
+ de = (struct ip6t_entry *)*dstptr;
+ memcpy(de, e, sizeof(struct ip6t_entry));
+@@ -1596,11 +1549,9 @@ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
+ *dstptr += sizeof(struct ip6t_entry);
+ *size += sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
+
+- xt_ematch_foreach(ematch, e) {
+- ret = xt_compat_match_from_user(ematch, dstptr, size);
+- if (ret != 0)
+- return ret;
+- }
++ xt_ematch_foreach(ematch, e)
++ xt_compat_match_from_user(ematch, dstptr, size);
++
+ de->target_offset = e->target_offset - (origsize - *size);
+ t = compat_ip6t_get_target(e);
+ xt_compat_target_from_user(t, dstptr, size);
+@@ -1612,181 +1563,82 @@ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
+ if ((unsigned char *)de - base < newinfo->underflow[h])
+ newinfo->underflow[h] -= origsize - *size;
+ }
+- return ret;
+-}
+-
+-static int compat_check_entry(struct ip6t_entry *e, struct net *net,
+- const char *name)
+-{
+- unsigned int j;
+- int ret = 0;
+- struct xt_mtchk_param mtpar;
+- struct xt_entry_match *ematch;
+-
+- j = 0;
+- mtpar.net = net;
+- mtpar.table = name;
+- mtpar.entryinfo = &e->ipv6;
+- mtpar.hook_mask = e->comefrom;
+- mtpar.family = NFPROTO_IPV6;
+- xt_ematch_foreach(ematch, e) {
+- ret = check_match(ematch, &mtpar);
+- if (ret != 0)
+- goto cleanup_matches;
+- ++j;
+- }
+-
+- ret = check_target(e, net, name);
+- if (ret)
+- goto cleanup_matches;
+- return 0;
+-
+- cleanup_matches:
+- xt_ematch_foreach(ematch, e) {
+- if (j-- == 0)
+- break;
+- cleanup_match(ematch, net);
+- }
+- return ret;
+ }
+
+ static int
+ translate_compat_table(struct net *net,
+- const char *name,
+- unsigned int valid_hooks,
+ struct xt_table_info **pinfo,
+ void **pentry0,
+- unsigned int total_size,
+- unsigned int number,
+- unsigned int *hook_entries,
+- unsigned int *underflows)
++ const struct compat_ip6t_replace *compatr)
+ {
+ unsigned int i, j;
+ struct xt_table_info *newinfo, *info;
+ void *pos, *entry0, *entry1;
+ struct compat_ip6t_entry *iter0;
+- struct ip6t_entry *iter1;
++ struct ip6t_replace repl;
+ unsigned int size;
+ int ret = 0;
+
+ info = *pinfo;
+ entry0 = *pentry0;
+- size = total_size;
+- info->number = number;
+-
+- /* Init all hooks to impossible value. */
+- for (i = 0; i < NF_INET_NUMHOOKS; i++) {
+- info->hook_entry[i] = 0xFFFFFFFF;
+- info->underflow[i] = 0xFFFFFFFF;
+- }
++ size = compatr->size;
++ info->number = compatr->num_entries;
+
+ duprintf("translate_compat_table: size %u\n", info->size);
+ j = 0;
+ xt_compat_lock(AF_INET6);
+- xt_compat_init_offsets(AF_INET6, number);
++ xt_compat_init_offsets(AF_INET6, compatr->num_entries);
+ /* Walk through entries, checking offsets. */
+- xt_entry_foreach(iter0, entry0, total_size) {
++ xt_entry_foreach(iter0, entry0, compatr->size) {
+ ret = check_compat_entry_size_and_hooks(iter0, info, &size,
+ entry0,
+- entry0 + total_size,
+- hook_entries,
+- underflows,
+- name);
++ entry0 + compatr->size);
+ if (ret != 0)
+ goto out_unlock;
+ ++j;
+ }
+
+ ret = -EINVAL;
+- if (j != number) {
++ if (j != compatr->num_entries) {
+ duprintf("translate_compat_table: %u not %u entries\n",
+- j, number);
++ j, compatr->num_entries);
+ goto out_unlock;
+ }
+
+- /* Check hooks all assigned */
+- for (i = 0; i < NF_INET_NUMHOOKS; i++) {
+- /* Only hooks which are valid */
+- if (!(valid_hooks & (1 << i)))
+- continue;
+- if (info->hook_entry[i] == 0xFFFFFFFF) {
+- duprintf("Invalid hook entry %u %u\n",
+- i, hook_entries[i]);
+- goto out_unlock;
+- }
+- if (info->underflow[i] == 0xFFFFFFFF) {
+- duprintf("Invalid underflow %u %u\n",
+- i, underflows[i]);
+- goto out_unlock;
+- }
+- }
+-
+ ret = -ENOMEM;
+ newinfo = xt_alloc_table_info(size);
+ if (!newinfo)
+ goto out_unlock;
+
+- newinfo->number = number;
++ newinfo->number = compatr->num_entries;
+ for (i = 0; i < NF_INET_NUMHOOKS; i++) {
+- newinfo->hook_entry[i] = info->hook_entry[i];
+- newinfo->underflow[i] = info->underflow[i];
++ newinfo->hook_entry[i] = compatr->hook_entry[i];
++ newinfo->underflow[i] = compatr->underflow[i];
+ }
+ entry1 = newinfo->entries[raw_smp_processor_id()];
+ pos = entry1;
+- size = total_size;
+- xt_entry_foreach(iter0, entry0, total_size) {
+- ret = compat_copy_entry_from_user(iter0, &pos, &size,
+- name, newinfo, entry1);
+- if (ret != 0)
+- break;
+- }
++ size = compatr->size;
++ xt_entry_foreach(iter0, entry0, compatr->size)
++ compat_copy_entry_from_user(iter0, &pos, &size,
++ newinfo, entry1);
++
++ /* all module references in entry0 are now gone. */
+ xt_compat_flush_offsets(AF_INET6);
+ xt_compat_unlock(AF_INET6);
+- if (ret)
+- goto free_newinfo;
+
+- ret = -ELOOP;
+- if (!mark_source_chains(newinfo, valid_hooks, entry1))
+- goto free_newinfo;
++ memcpy(&repl, compatr, sizeof(*compatr));
+
+- i = 0;
+- xt_entry_foreach(iter1, entry1, newinfo->size) {
+- ret = compat_check_entry(iter1, net, name);
+- if (ret != 0)
+- break;
+- ++i;
+- if (strcmp(ip6t_get_target(iter1)->u.user.name,
+- XT_ERROR_TARGET) == 0)
+- ++newinfo->stacksize;
+- }
+- if (ret) {
+- /*
+- * The first i matches need cleanup_entry (calls ->destroy)
+- * because they had called ->check already. The other j-i
+- * entries need only release.
+- */
+- int skip = i;
+- j -= i;
+- xt_entry_foreach(iter0, entry0, newinfo->size) {
+- if (skip-- > 0)
+- continue;
+- if (j-- == 0)
+- break;
+- compat_release_entry(iter0);
+- }
+- xt_entry_foreach(iter1, entry1, newinfo->size) {
+- if (i-- == 0)
+- break;
+- cleanup_entry(iter1, net);
+- }
+- xt_free_table_info(newinfo);
+- return ret;
++ for (i = 0; i < NF_INET_NUMHOOKS; i++) {
++ repl.hook_entry[i] = newinfo->hook_entry[i];
++ repl.underflow[i] = newinfo->underflow[i];
+ }
+
+- /* And one copy for every other CPU */
+- for_each_possible_cpu(i)
+- if (newinfo->entries[i] && newinfo->entries[i] != entry1)
+- memcpy(newinfo->entries[i], entry1, newinfo->size);
++ repl.num_counters = 0;
++ repl.counters = NULL;
++ repl.size = newinfo->size;
++ ret = translate_table(net, newinfo, entry1, &repl);
++ if (ret)
++ goto free_newinfo;
+
+ *pinfo = newinfo;
+ *pentry0 = entry1;
+@@ -1795,17 +1647,16 @@ translate_compat_table(struct net *net,
+
+ free_newinfo:
+ xt_free_table_info(newinfo);
+-out:
+- xt_entry_foreach(iter0, entry0, total_size) {
++ return ret;
++out_unlock:
++ xt_compat_flush_offsets(AF_INET6);
++ xt_compat_unlock(AF_INET6);
++ xt_entry_foreach(iter0, entry0, compatr->size) {
+ if (j-- == 0)
+ break;
+ compat_release_entry(iter0);
+ }
+ return ret;
+-out_unlock:
+- xt_compat_flush_offsets(AF_INET6);
+- xt_compat_unlock(AF_INET6);
+- goto out;
+ }
+
+ static int
+@@ -1842,10 +1693,7 @@ compat_do_replace(struct net *net, void __user *user, unsigned int len)
+ goto free_newinfo;
+ }
+
+- ret = translate_compat_table(net, tmp.name, tmp.valid_hooks,
+- &newinfo, &loc_cpu_entry, tmp.size,
+- tmp.num_entries, tmp.hook_entry,
+- tmp.underflow);
++ ret = translate_compat_table(net, &newinfo, &loc_cpu_entry, &tmp);
+ if (ret != 0)
+ goto free_newinfo;
+
+diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
+index c1147acbc8c4..ac6c40d08ac5 100644
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -1691,7 +1691,9 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i)
+ destp = ntohs(inet->inet_dport);
+ srcp = ntohs(inet->inet_sport);
+
+- if (icsk->icsk_pending == ICSK_TIME_RETRANS) {
++ if (icsk->icsk_pending == ICSK_TIME_RETRANS ||
++ icsk->icsk_pending == ICSK_TIME_EARLY_RETRANS ||
++ icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) {
+ timer_active = 1;
+ timer_expires = icsk->icsk_timeout;
+ } else if (icsk->icsk_pending == ICSK_TIME_PROBE0) {
+diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
+index 7333f3575fc5..1173557ea551 100644
+--- a/net/ipv6/udp.c
++++ b/net/ipv6/udp.c
+@@ -834,8 +834,8 @@ start_lookup:
+ flush_stack(stack, count, skb, count - 1);
+ } else {
+ if (!inner_flushed)
+- UDP_INC_STATS_BH(net, UDP_MIB_IGNOREDMULTI,
+- proto == IPPROTO_UDPLITE);
++ UDP6_INC_STATS_BH(net, UDP_MIB_IGNOREDMULTI,
++ proto == IPPROTO_UDPLITE);
+ consume_skb(skb);
+ }
+ return 0;
+@@ -913,11 +913,9 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
+ ret = udpv6_queue_rcv_skb(sk, skb);
+ sock_put(sk);
+
+- /* a return value > 0 means to resubmit the input, but
+- * it wants the return to be -protocol, or 0
+- */
++ /* a return value > 0 means to resubmit the input */
+ if (ret > 0)
+- return -ret;
++ return ret;
+
+ return 0;
+ }
+diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
+index 79649937ec71..44ee0683b14b 100644
+--- a/net/l2tp/l2tp_ip.c
++++ b/net/l2tp/l2tp_ip.c
+@@ -123,12 +123,11 @@ static int l2tp_ip_recv(struct sk_buff *skb)
+ struct l2tp_tunnel *tunnel = NULL;
+ int length;
+
+- /* Point to L2TP header */
+- optr = ptr = skb->data;
+-
+ if (!pskb_may_pull(skb, 4))
+ goto discard;
+
++ /* Point to L2TP header */
++ optr = ptr = skb->data;
+ session_id = ntohl(*((__be32 *) ptr));
+ ptr += 4;
+
+@@ -156,6 +155,9 @@ static int l2tp_ip_recv(struct sk_buff *skb)
+ if (!pskb_may_pull(skb, length))
+ goto discard;
+
++ /* Point to L2TP header */
++ optr = ptr = skb->data;
++ ptr += 4;
+ pr_debug("%s: ip recv\n", tunnel->name);
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, ptr, length);
+ }
+diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
+index 0ce9da948ad7..36f8fa223a78 100644
+--- a/net/l2tp/l2tp_ip6.c
++++ b/net/l2tp/l2tp_ip6.c
+@@ -135,12 +135,11 @@ static int l2tp_ip6_recv(struct sk_buff *skb)
+ struct l2tp_tunnel *tunnel = NULL;
+ int length;
+
+- /* Point to L2TP header */
+- optr = ptr = skb->data;
+-
+ if (!pskb_may_pull(skb, 4))
+ goto discard;
+
++ /* Point to L2TP header */
++ optr = ptr = skb->data;
+ session_id = ntohl(*((__be32 *) ptr));
+ ptr += 4;
+
+@@ -168,6 +167,9 @@ static int l2tp_ip6_recv(struct sk_buff *skb)
+ if (!pskb_may_pull(skb, length))
+ goto discard;
+
++ /* Point to L2TP header */
++ optr = ptr = skb->data;
++ ptr += 4;
+ pr_debug("%s: ip recv\n", tunnel->name);
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, ptr, length);
+ }
+diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
+index 17a8dff06090..c58f242c00f1 100644
+--- a/net/llc/af_llc.c
++++ b/net/llc/af_llc.c
+@@ -626,6 +626,7 @@ static void llc_cmsg_rcv(struct msghdr *msg, struct sk_buff *skb)
+ if (llc->cmsg_flags & LLC_CMSG_PKTINFO) {
+ struct llc_pktinfo info;
+
++ memset(&info, 0, sizeof(info));
+ info.lpi_ifindex = llc_sk(skb->sk)->dev->ifindex;
+ llc_pdu_decode_dsap(skb, &info.lpi_sap);
+ llc_pdu_decode_da(skb, info.lpi_mac);
+diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
+index 41adfc898a18..6f1f3bdddea2 100644
+--- a/net/mac80211/ibss.c
++++ b/net/mac80211/ibss.c
+@@ -7,6 +7,7 @@
+ * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
+ * Copyright 2009, Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
++ * Copyright(c) 2016 Intel Deutschland GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -1479,14 +1480,21 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
+
+ sdata_info(sdata, "Trigger new scan to find an IBSS to join\n");
+
+- num = ieee80211_ibss_setup_scan_channels(local->hw.wiphy,
+- &ifibss->chandef,
+- channels,
+- ARRAY_SIZE(channels));
+ scan_width = cfg80211_chandef_to_scan_width(&ifibss->chandef);
+- ieee80211_request_ibss_scan(sdata, ifibss->ssid,
+- ifibss->ssid_len, channels, num,
+- scan_width);
++
++ if (ifibss->fixed_channel) {
++ num = ieee80211_ibss_setup_scan_channels(local->hw.wiphy,
++ &ifibss->chandef,
++ channels,
++ ARRAY_SIZE(channels));
++ ieee80211_request_ibss_scan(sdata, ifibss->ssid,
++ ifibss->ssid_len, channels,
++ num, scan_width);
++ } else {
++ ieee80211_request_ibss_scan(sdata, ifibss->ssid,
++ ifibss->ssid_len, NULL,
++ 0, scan_width);
++ }
+ } else {
+ int interval = IEEE80211_SCAN_INTERVAL;
+
+diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
+index 84cef600c573..6e89ab8eac44 100644
+--- a/net/mac80211/iface.c
++++ b/net/mac80211/iface.c
+@@ -980,7 +980,10 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
+ if (sdata->vif.txq) {
+ struct txq_info *txqi = to_txq_info(sdata->vif.txq);
+
++ spin_lock_bh(&txqi->queue.lock);
+ ieee80211_purge_tx_queue(&local->hw, &txqi->queue);
++ spin_unlock_bh(&txqi->queue.lock);
++
+ atomic_set(&sdata->txqs_len[txqi->txq.ac], 0);
+ }
+
+diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
+index d4b08d87537c..3073164a6fcf 100644
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -2227,7 +2227,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
+ struct ieee80211_sub_if_data *sdata = rx->sdata;
+ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+- u16 q, hdrlen;
++ u16 ac, q, hdrlen;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
+@@ -2297,7 +2297,8 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
+ ether_addr_equal(sdata->vif.addr, hdr->addr3))
+ return RX_CONTINUE;
+
+- q = ieee80211_select_queue_80211(sdata, skb, hdr);
++ ac = ieee80211_select_queue_80211(sdata, skb, hdr);
++ q = sdata->vif.hw_queue[ac];
+ if (ieee80211_queue_stopped(&local->hw, q)) {
+ IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_congestion);
+ return RX_DROP_MONITOR;
+diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
+index a7027190f298..bcdbda289d75 100644
+--- a/net/mac80211/sta_info.c
++++ b/net/mac80211/sta_info.c
+@@ -472,11 +472,17 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
+ {
+ struct ieee80211_local *local = sta->local;
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+- struct station_info sinfo;
++ struct station_info *sinfo;
+ int err = 0;
+
+ lockdep_assert_held(&local->sta_mtx);
+
++ sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL);
++ if (!sinfo) {
++ err = -ENOMEM;
++ goto out_err;
++ }
++
+ /* check if STA exists already */
+ if (sta_info_get_bss(sdata, sta->sta.addr)) {
+ err = -EEXIST;
+@@ -510,10 +516,9 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
+ ieee80211_sta_debugfs_add(sta);
+ rate_control_add_sta_debugfs(sta);
+
+- memset(&sinfo, 0, sizeof(sinfo));
+- sinfo.filled = 0;
+- sinfo.generation = local->sta_generation;
+- cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL);
++ sinfo->generation = local->sta_generation;
++ cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL);
++ kfree(sinfo);
+
+ sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr);
+
+@@ -876,7 +881,7 @@ static void __sta_info_destroy_part2(struct sta_info *sta)
+ {
+ struct ieee80211_local *local = sta->local;
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+- struct station_info sinfo = {};
++ struct station_info *sinfo;
+ int ret;
+
+ /*
+@@ -914,8 +919,11 @@ static void __sta_info_destroy_part2(struct sta_info *sta)
+
+ sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr);
+
+- sta_set_sinfo(sta, &sinfo);
+- cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL);
++ sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
++ if (sinfo)
++ sta_set_sinfo(sta, sinfo);
++ cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL);
++ kfree(sinfo);
+
+ rate_control_remove_sta_debugfs(sta);
+ ieee80211_sta_debugfs_remove(sta);
+diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
+index 38fbc194b9cb..a26bd6532829 100644
+--- a/net/netfilter/ipvs/ip_vs_core.c
++++ b/net/netfilter/ipvs/ip_vs_core.c
+@@ -1689,15 +1689,34 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
+ cp = pp->conn_in_get(af, skb, &iph, 0);
+
+ conn_reuse_mode = sysctl_conn_reuse_mode(ipvs);
+- if (conn_reuse_mode && !iph.fragoffs &&
+- is_new_conn(skb, &iph) && cp &&
+- ((unlikely(sysctl_expire_nodest_conn(ipvs)) && cp->dest &&
+- unlikely(!atomic_read(&cp->dest->weight))) ||
+- unlikely(is_new_conn_expected(cp, conn_reuse_mode)))) {
+- if (!atomic_read(&cp->n_control))
+- ip_vs_conn_expire_now(cp);
+- __ip_vs_conn_put(cp);
+- cp = NULL;
++ if (conn_reuse_mode && !iph.fragoffs && is_new_conn(skb, &iph) && cp) {
++ bool uses_ct = false, resched = false;
++
++ if (unlikely(sysctl_expire_nodest_conn(ipvs)) && cp->dest &&
++ unlikely(!atomic_read(&cp->dest->weight))) {
++ resched = true;
++ uses_ct = ip_vs_conn_uses_conntrack(cp, skb);
++ } else if (is_new_conn_expected(cp, conn_reuse_mode)) {
++ uses_ct = ip_vs_conn_uses_conntrack(cp, skb);
++ if (!atomic_read(&cp->n_control)) {
++ resched = true;
++ } else {
++ /* Do not reschedule controlling connection
++ * that uses conntrack while it is still
++ * referenced by controlled connection(s).
++ */
++ resched = !uses_ct;
++ }
++ }
++
++ if (resched) {
++ if (!atomic_read(&cp->n_control))
++ ip_vs_conn_expire_now(cp);
++ __ip_vs_conn_put(cp);
++ if (uses_ct)
++ return NF_DROP;
++ cp = NULL;
++ }
+ }
+
+ if (unlikely(!cp) && !iph.fragoffs) {
+diff --git a/net/netfilter/ipvs/ip_vs_pe_sip.c b/net/netfilter/ipvs/ip_vs_pe_sip.c
+index bed5f7042529..bb318e4623a3 100644
+--- a/net/netfilter/ipvs/ip_vs_pe_sip.c
++++ b/net/netfilter/ipvs/ip_vs_pe_sip.c
+@@ -88,7 +88,7 @@ ip_vs_sip_fill_param(struct ip_vs_conn_param *p, struct sk_buff *skb)
+ dptr = skb->data + dataoff;
+ datalen = skb->len - dataoff;
+
+- if (get_callid(dptr, dataoff, datalen, &matchoff, &matchlen))
++ if (get_callid(dptr, 0, datalen, &matchoff, &matchlen))
+ return -EINVAL;
+
+ /* N.B: pe_data is only set on success,
+diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
+index 51a459c3c649..4b850c639ac5 100644
+--- a/net/netfilter/x_tables.c
++++ b/net/netfilter/x_tables.c
+@@ -418,6 +418,47 @@ int xt_check_match(struct xt_mtchk_param *par,
+ }
+ EXPORT_SYMBOL_GPL(xt_check_match);
+
++/** xt_check_entry_match - check that matches end before start of target
++ *
++ * @match: beginning of xt_entry_match
++ * @target: beginning of this rules target (alleged end of matches)
++ * @alignment: alignment requirement of match structures
++ *
++ * Validates that all matches add up to the beginning of the target,
++ * and that each match covers at least the base structure size.
++ *
++ * Return: 0 on success, negative errno on failure.
++ */
++static int xt_check_entry_match(const char *match, const char *target,
++ const size_t alignment)
++{
++ const struct xt_entry_match *pos;
++ int length = target - match;
++
++ if (length == 0) /* no matches */
++ return 0;
++
++ pos = (struct xt_entry_match *)match;
++ do {
++ if ((unsigned long)pos % alignment)
++ return -EINVAL;
++
++ if (length < (int)sizeof(struct xt_entry_match))
++ return -EINVAL;
++
++ if (pos->u.match_size < sizeof(struct xt_entry_match))
++ return -EINVAL;
++
++ if (pos->u.match_size > length)
++ return -EINVAL;
++
++ length -= pos->u.match_size;
++ pos = ((void *)((char *)(pos) + (pos)->u.match_size));
++ } while (length > 0);
++
++ return 0;
++}
++
+ #ifdef CONFIG_COMPAT
+ int xt_compat_add_offset(u_int8_t af, unsigned int offset, int delta)
+ {
+@@ -487,13 +528,14 @@ int xt_compat_match_offset(const struct xt_match *match)
+ }
+ EXPORT_SYMBOL_GPL(xt_compat_match_offset);
+
+-int xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,
+- unsigned int *size)
++void xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,
++ unsigned int *size)
+ {
+ const struct xt_match *match = m->u.kernel.match;
+ struct compat_xt_entry_match *cm = (struct compat_xt_entry_match *)m;
+ int pad, off = xt_compat_match_offset(match);
+ u_int16_t msize = cm->u.user.match_size;
++ char name[sizeof(m->u.user.name)];
+
+ m = *dstptr;
+ memcpy(m, cm, sizeof(*cm));
+@@ -507,10 +549,12 @@ int xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,
+
+ msize += off;
+ m->u.user.match_size = msize;
++ strlcpy(name, match->name, sizeof(name));
++ module_put(match->me);
++ strncpy(m->u.user.name, name, sizeof(m->u.user.name));
+
+ *size += off;
+ *dstptr += msize;
+- return 0;
+ }
+ EXPORT_SYMBOL_GPL(xt_compat_match_from_user);
+
+@@ -541,8 +585,125 @@ int xt_compat_match_to_user(const struct xt_entry_match *m,
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(xt_compat_match_to_user);
++
++/* non-compat version may have padding after verdict */
++struct compat_xt_standard_target {
++ struct compat_xt_entry_target t;
++ compat_uint_t verdict;
++};
++
++int xt_compat_check_entry_offsets(const void *base, const char *elems,
++ unsigned int target_offset,
++ unsigned int next_offset)
++{
++ long size_of_base_struct = elems - (const char *)base;
++ const struct compat_xt_entry_target *t;
++ const char *e = base;
++
++ if (target_offset < size_of_base_struct)
++ return -EINVAL;
++
++ if (target_offset + sizeof(*t) > next_offset)
++ return -EINVAL;
++
++ t = (void *)(e + target_offset);
++ if (t->u.target_size < sizeof(*t))
++ return -EINVAL;
++
++ if (target_offset + t->u.target_size > next_offset)
++ return -EINVAL;
++
++ if (strcmp(t->u.user.name, XT_STANDARD_TARGET) == 0 &&
++ COMPAT_XT_ALIGN(target_offset + sizeof(struct compat_xt_standard_target)) != next_offset)
++ return -EINVAL;
++
++ /* compat_xt_entry match has less strict aligment requirements,
++ * otherwise they are identical. In case of padding differences
++ * we need to add compat version of xt_check_entry_match.
++ */
++ BUILD_BUG_ON(sizeof(struct compat_xt_entry_match) != sizeof(struct xt_entry_match));
++
++ return xt_check_entry_match(elems, base + target_offset,
++ __alignof__(struct compat_xt_entry_match));
++}
++EXPORT_SYMBOL(xt_compat_check_entry_offsets);
+ #endif /* CONFIG_COMPAT */
+
++/**
++ * xt_check_entry_offsets - validate arp/ip/ip6t_entry
++ *
++ * @base: pointer to arp/ip/ip6t_entry
++ * @elems: pointer to first xt_entry_match, i.e. ip(6)t_entry->elems
++ * @target_offset: the arp/ip/ip6_t->target_offset
++ * @next_offset: the arp/ip/ip6_t->next_offset
++ *
++ * validates that target_offset and next_offset are sane and that all
++ * match sizes (if any) align with the target offset.
++ *
++ * This function does not validate the targets or matches themselves, it
++ * only tests that all the offsets and sizes are correct, that all
++ * match structures are aligned, and that the last structure ends where
++ * the target structure begins.
++ *
++ * Also see xt_compat_check_entry_offsets for CONFIG_COMPAT version.
++ *
++ * The arp/ip/ip6t_entry structure @base must have passed following tests:
++ * - it must point to a valid memory location
++ * - base to base + next_offset must be accessible, i.e. not exceed allocated
++ * length.
++ *
++ * A well-formed entry looks like this:
++ *
++ * ip(6)t_entry match [mtdata] match [mtdata] target [tgdata] ip(6)t_entry
++ * e->elems[]-----' | |
++ * matchsize | |
++ * matchsize | |
++ * | |
++ * target_offset---------------------------------' |
++ * next_offset---------------------------------------------------'
++ *
++ * elems[]: flexible array member at end of ip(6)/arpt_entry struct.
++ * This is where matches (if any) and the target reside.
++ * target_offset: beginning of target.
++ * next_offset: start of the next rule; also: size of this rule.
++ * Since targets have a minimum size, target_offset + minlen <= next_offset.
++ *
++ * Every match stores its size, sum of sizes must not exceed target_offset.
++ *
++ * Return: 0 on success, negative errno on failure.
++ */
++int xt_check_entry_offsets(const void *base,
++ const char *elems,
++ unsigned int target_offset,
++ unsigned int next_offset)
++{
++ long size_of_base_struct = elems - (const char *)base;
++ const struct xt_entry_target *t;
++ const char *e = base;
++
++ /* target start is within the ip/ip6/arpt_entry struct */
++ if (target_offset < size_of_base_struct)
++ return -EINVAL;
++
++ if (target_offset + sizeof(*t) > next_offset)
++ return -EINVAL;
++
++ t = (void *)(e + target_offset);
++ if (t->u.target_size < sizeof(*t))
++ return -EINVAL;
++
++ if (target_offset + t->u.target_size > next_offset)
++ return -EINVAL;
++
++ if (strcmp(t->u.user.name, XT_STANDARD_TARGET) == 0 &&
++ XT_ALIGN(target_offset + sizeof(struct xt_standard_target)) != next_offset)
++ return -EINVAL;
++
++ return xt_check_entry_match(elems, base + target_offset,
++ __alignof__(struct xt_entry_match));
++}
++EXPORT_SYMBOL(xt_check_entry_offsets);
++
+ int xt_check_target(struct xt_tgchk_param *par,
+ unsigned int size, u_int8_t proto, bool inv_proto)
+ {
+@@ -593,6 +754,80 @@ int xt_check_target(struct xt_tgchk_param *par,
+ }
+ EXPORT_SYMBOL_GPL(xt_check_target);
+
++/**
++ * xt_copy_counters_from_user - copy counters and metadata from userspace
++ *
++ * @user: src pointer to userspace memory
++ * @len: alleged size of userspace memory
++ * @info: where to store the xt_counters_info metadata
++ * @compat: true if we setsockopt call is done by 32bit task on 64bit kernel
++ *
++ * Copies counter meta data from @user and stores it in @info.
++ *
++ * vmallocs memory to hold the counters, then copies the counter data
++ * from @user to the new memory and returns a pointer to it.
++ *
++ * If @compat is true, @info gets converted automatically to the 64bit
++ * representation.
++ *
++ * The metadata associated with the counters is stored in @info.
++ *
++ * Return: returns pointer that caller has to test via IS_ERR().
++ * If IS_ERR is false, caller has to vfree the pointer.
++ */
++void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
++ struct xt_counters_info *info, bool compat)
++{
++ void *mem;
++ u64 size;
++
++#ifdef CONFIG_COMPAT
++ if (compat) {
++ /* structures only differ in size due to alignment */
++ struct compat_xt_counters_info compat_tmp;
++
++ if (len <= sizeof(compat_tmp))
++ return ERR_PTR(-EINVAL);
++
++ len -= sizeof(compat_tmp);
++ if (copy_from_user(&compat_tmp, user, sizeof(compat_tmp)) != 0)
++ return ERR_PTR(-EFAULT);
++
++ strlcpy(info->name, compat_tmp.name, sizeof(info->name));
++ info->num_counters = compat_tmp.num_counters;
++ user += sizeof(compat_tmp);
++ } else
++#endif
++ {
++ if (len <= sizeof(*info))
++ return ERR_PTR(-EINVAL);
++
++ len -= sizeof(*info);
++ if (copy_from_user(info, user, sizeof(*info)) != 0)
++ return ERR_PTR(-EFAULT);
++
++ info->name[sizeof(info->name) - 1] = '\0';
++ user += sizeof(*info);
++ }
++
++ size = sizeof(struct xt_counters);
++ size *= info->num_counters;
++
++ if (size != (u64)len)
++ return ERR_PTR(-EINVAL);
++
++ mem = vmalloc(len);
++ if (!mem)
++ return ERR_PTR(-ENOMEM);
++
++ if (copy_from_user(mem, user, len) == 0)
++ return mem;
++
++ vfree(mem);
++ return ERR_PTR(-EFAULT);
++}
++EXPORT_SYMBOL_GPL(xt_copy_counters_from_user);
++
+ #ifdef CONFIG_COMPAT
+ int xt_compat_target_offset(const struct xt_target *target)
+ {
+@@ -608,6 +843,7 @@ void xt_compat_target_from_user(struct xt_entry_target *t, void **dstptr,
+ struct compat_xt_entry_target *ct = (struct compat_xt_entry_target *)t;
+ int pad, off = xt_compat_target_offset(target);
+ u_int16_t tsize = ct->u.user.target_size;
++ char name[sizeof(t->u.user.name)];
+
+ t = *dstptr;
+ memcpy(t, ct, sizeof(*ct));
+@@ -621,6 +857,9 @@ void xt_compat_target_from_user(struct xt_entry_target *t, void **dstptr,
+
+ tsize += off;
+ t->u.user.target_size = tsize;
++ strlcpy(name, target->name, sizeof(name));
++ module_put(target->me);
++ strncpy(t->u.user.name, name, sizeof(t->u.user.name));
+
+ *size += off;
+ *dstptr += tsize;
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index 0c29986ecd87..dbc32b19c574 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -2683,6 +2683,7 @@ static int netlink_dump(struct sock *sk)
+ struct netlink_callback *cb;
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
++ struct module *module;
+ int len, err = -ENOBUFS;
+ int alloc_min_size;
+ int alloc_size;
+@@ -2762,9 +2763,11 @@ static int netlink_dump(struct sock *sk)
+ cb->done(cb);
+
+ nlk->cb_running = false;
++ module = cb->module;
++ skb = cb->skb;
+ mutex_unlock(nlk->cb_mutex);
+- module_put(cb->module);
+- consume_skb(cb->skb);
++ module_put(module);
++ consume_skb(skb);
+ return 0;
+
+ errout_skb:
+diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
+index b491c1c296fe..9920f7502f6d 100644
+--- a/net/openvswitch/actions.c
++++ b/net/openvswitch/actions.c
+@@ -441,7 +441,7 @@ static int set_ipv6(struct sk_buff *skb, struct sw_flow_key *flow_key,
+ mask_ipv6_addr(saddr, key->ipv6_src, mask->ipv6_src, masked);
+
+ if (unlikely(memcmp(saddr, masked, sizeof(masked)))) {
+- set_ipv6_addr(skb, key->ipv6_proto, saddr, masked,
++ set_ipv6_addr(skb, flow_key->ip.proto, saddr, masked,
+ true);
+ memcpy(&flow_key->ipv6.addr.src, masked,
+ sizeof(flow_key->ipv6.addr.src));
+@@ -463,7 +463,7 @@ static int set_ipv6(struct sk_buff *skb, struct sw_flow_key *flow_key,
+ NULL, &flags)
+ != NEXTHDR_ROUTING);
+
+- set_ipv6_addr(skb, key->ipv6_proto, daddr, masked,
++ set_ipv6_addr(skb, flow_key->ip.proto, daddr, masked,
+ recalc_csum);
+ memcpy(&flow_key->ipv6.addr.dst, masked,
+ sizeof(flow_key->ipv6.addr.dst));
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index ebc39e66d704..a3654d929814 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -1699,6 +1699,10 @@ retry:
+ goto retry;
+ }
+
++ if (!dev_validate_header(dev, skb->data, len)) {
++ err = -EINVAL;
++ goto out_unlock;
++ }
+ if (len > (dev->mtu + dev->hard_header_len + extra_len) &&
+ !packet_extra_vlan_len_allowed(dev, skb)) {
+ err = -EMSGSIZE;
+@@ -2109,18 +2113,6 @@ static void tpacket_destruct_skb(struct sk_buff *skb)
+ sock_wfree(skb);
+ }
+
+-static bool ll_header_truncated(const struct net_device *dev, int len)
+-{
+- /* net device doesn't like empty head */
+- if (unlikely(len <= dev->hard_header_len)) {
+- net_warn_ratelimited("%s: packet size is too short (%d <= %d)\n",
+- current->comm, len, dev->hard_header_len);
+- return true;
+- }
+-
+- return false;
+-}
+-
+ static void tpacket_set_protocol(const struct net_device *dev,
+ struct sk_buff *skb)
+ {
+@@ -2203,19 +2195,19 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
+ if (unlikely(err < 0))
+ return -EINVAL;
+ } else if (dev->hard_header_len) {
+- if (ll_header_truncated(dev, tp_len))
+- return -EINVAL;
++ int hdrlen = min_t(int, dev->hard_header_len, tp_len);
+
+ skb_push(skb, dev->hard_header_len);
+- err = skb_store_bits(skb, 0, data,
+- dev->hard_header_len);
++ err = skb_store_bits(skb, 0, data, hdrlen);
+ if (unlikely(err))
+ return err;
++ if (!dev_validate_header(dev, skb->data, hdrlen))
++ return -EINVAL;
+ if (!skb->protocol)
+ tpacket_set_protocol(dev, skb);
+
+- data += dev->hard_header_len;
+- to_write -= dev->hard_header_len;
++ data += hdrlen;
++ to_write -= hdrlen;
+ }
+
+ offset = offset_in_page(data);
+@@ -2538,9 +2530,6 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
+ offset = dev_hard_header(skb, dev, ntohs(proto), addr, NULL, len);
+ if (unlikely(offset < 0))
+ goto out_free;
+- } else {
+- if (ll_header_truncated(dev, len))
+- goto out_free;
+ }
+
+ /* Returns -EFAULT on error */
+@@ -2548,6 +2537,12 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
+ if (err)
+ goto out_free;
+
++ if (sock->type == SOCK_RAW &&
++ !dev_validate_header(dev, skb->data, len)) {
++ err = -EINVAL;
++ goto out_free;
++ }
++
+ sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
+
+ if (!gso_type && (len > dev->mtu + reserve + extra_len) &&
+@@ -3212,6 +3207,7 @@ static int packet_mc_add(struct sock *sk, struct packet_mreq_max *mreq)
+ i->ifindex = mreq->mr_ifindex;
+ i->alen = mreq->mr_alen;
+ memcpy(i->addr, mreq->mr_address, i->alen);
++ memset(i->addr + i->alen, 0, sizeof(i->addr) - i->alen);
+ i->count = 1;
+ i->next = po->mclist;
+ po->mclist = i;
+diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
+index 68c599a5e1d1..c244a49ae4ac 100644
+--- a/net/sched/sch_api.c
++++ b/net/sched/sch_api.c
+@@ -744,14 +744,15 @@ static u32 qdisc_alloc_handle(struct net_device *dev)
+ return 0;
+ }
+
+-void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
++void qdisc_tree_reduce_backlog(struct Qdisc *sch, unsigned int n,
++ unsigned int len)
+ {
+ const struct Qdisc_class_ops *cops;
+ unsigned long cl;
+ u32 parentid;
+ int drops;
+
+- if (n == 0)
++ if (n == 0 && len == 0)
+ return;
+ drops = max_t(int, n, 0);
+ rcu_read_lock();
+@@ -774,11 +775,12 @@ void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
+ cops->put(sch, cl);
+ }
+ sch->q.qlen -= n;
++ sch->qstats.backlog -= len;
+ __qdisc_qstats_drop(sch, drops);
+ }
+ rcu_read_unlock();
+ }
+-EXPORT_SYMBOL(qdisc_tree_decrease_qlen);
++EXPORT_SYMBOL(qdisc_tree_reduce_backlog);
+
+ static void notify_and_destroy(struct net *net, struct sk_buff *skb,
+ struct nlmsghdr *n, u32 clid,
+diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
+index beeb75f80fdb..f6e7a60012b1 100644
+--- a/net/sched/sch_cbq.c
++++ b/net/sched/sch_cbq.c
+@@ -1624,13 +1624,8 @@ static int cbq_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ new->reshape_fail = cbq_reshape_fail;
+ #endif
+ }
+- sch_tree_lock(sch);
+- *old = cl->q;
+- cl->q = new;
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- sch_tree_unlock(sch);
+
++ *old = qdisc_replace(sch, new, &cl->q);
+ return 0;
+ }
+
+@@ -1914,7 +1909,7 @@ static int cbq_delete(struct Qdisc *sch, unsigned long arg)
+ {
+ struct cbq_sched_data *q = qdisc_priv(sch);
+ struct cbq_class *cl = (struct cbq_class *)arg;
+- unsigned int qlen;
++ unsigned int qlen, backlog;
+
+ if (cl->filters || cl->children || cl == &q->link)
+ return -EBUSY;
+@@ -1922,8 +1917,9 @@ static int cbq_delete(struct Qdisc *sch, unsigned long arg)
+ sch_tree_lock(sch);
+
+ qlen = cl->q->q.qlen;
++ backlog = cl->q->qstats.backlog;
+ qdisc_reset(cl->q);
+- qdisc_tree_decrease_qlen(cl->q, qlen);
++ qdisc_tree_reduce_backlog(cl->q, qlen, backlog);
+
+ if (cl->next_alive)
+ cbq_deactivate_class(cl);
+diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
+index c009eb9045ce..3f6437db9b0f 100644
+--- a/net/sched/sch_choke.c
++++ b/net/sched/sch_choke.c
+@@ -128,8 +128,8 @@ static void choke_drop_by_idx(struct Qdisc *sch, unsigned int idx)
+ choke_zap_tail_holes(q);
+
+ qdisc_qstats_backlog_dec(sch, skb);
++ qdisc_tree_reduce_backlog(sch, 1, qdisc_pkt_len(skb));
+ qdisc_drop(skb, sch);
+- qdisc_tree_decrease_qlen(sch, 1);
+ --sch->q.qlen;
+ }
+
+@@ -449,6 +449,7 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt)
+ old = q->tab;
+ if (old) {
+ unsigned int oqlen = sch->q.qlen, tail = 0;
++ unsigned dropped = 0;
+
+ while (q->head != q->tail) {
+ struct sk_buff *skb = q->tab[q->head];
+@@ -460,11 +461,12 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt)
+ ntab[tail++] = skb;
+ continue;
+ }
++ dropped += qdisc_pkt_len(skb);
+ qdisc_qstats_backlog_dec(sch, skb);
+ --sch->q.qlen;
+ qdisc_drop(skb, sch);
+ }
+- qdisc_tree_decrease_qlen(sch, oqlen - sch->q.qlen);
++ qdisc_tree_reduce_backlog(sch, oqlen - sch->q.qlen, dropped);
+ q->head = 0;
+ q->tail = tail;
+ }
+diff --git a/net/sched/sch_codel.c b/net/sched/sch_codel.c
+index 7a0bdb16ac92..9a9068d00833 100644
+--- a/net/sched/sch_codel.c
++++ b/net/sched/sch_codel.c
+@@ -79,12 +79,13 @@ static struct sk_buff *codel_qdisc_dequeue(struct Qdisc *sch)
+
+ skb = codel_dequeue(sch, &q->params, &q->vars, &q->stats, dequeue);
+
+- /* We cant call qdisc_tree_decrease_qlen() if our qlen is 0,
++ /* We cant call qdisc_tree_reduce_backlog() if our qlen is 0,
+ * or HTB crashes. Defer it for next round.
+ */
+ if (q->stats.drop_count && sch->q.qlen) {
+- qdisc_tree_decrease_qlen(sch, q->stats.drop_count);
++ qdisc_tree_reduce_backlog(sch, q->stats.drop_count, q->stats.drop_len);
+ q->stats.drop_count = 0;
++ q->stats.drop_len = 0;
+ }
+ if (skb)
+ qdisc_bstats_update(sch, skb);
+@@ -115,7 +116,7 @@ static int codel_change(struct Qdisc *sch, struct nlattr *opt)
+ {
+ struct codel_sched_data *q = qdisc_priv(sch);
+ struct nlattr *tb[TCA_CODEL_MAX + 1];
+- unsigned int qlen;
++ unsigned int qlen, dropped = 0;
+ int err;
+
+ if (!opt)
+@@ -149,10 +150,11 @@ static int codel_change(struct Qdisc *sch, struct nlattr *opt)
+ while (sch->q.qlen > sch->limit) {
+ struct sk_buff *skb = __skb_dequeue(&sch->q);
+
++ dropped += qdisc_pkt_len(skb);
+ qdisc_qstats_backlog_dec(sch, skb);
+ qdisc_drop(skb, sch);
+ }
+- qdisc_tree_decrease_qlen(sch, qlen - sch->q.qlen);
++ qdisc_tree_reduce_backlog(sch, qlen - sch->q.qlen, dropped);
+
+ sch_tree_unlock(sch);
+ return 0;
+diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c
+index 338706092c27..e599803caa1e 100644
+--- a/net/sched/sch_drr.c
++++ b/net/sched/sch_drr.c
+@@ -53,9 +53,10 @@ static struct drr_class *drr_find_class(struct Qdisc *sch, u32 classid)
+ static void drr_purge_queue(struct drr_class *cl)
+ {
+ unsigned int len = cl->qdisc->q.qlen;
++ unsigned int backlog = cl->qdisc->qstats.backlog;
+
+ qdisc_reset(cl->qdisc);
+- qdisc_tree_decrease_qlen(cl->qdisc, len);
++ qdisc_tree_reduce_backlog(cl->qdisc, len, backlog);
+ }
+
+ static const struct nla_policy drr_policy[TCA_DRR_MAX + 1] = {
+@@ -226,11 +227,7 @@ static int drr_graft_class(struct Qdisc *sch, unsigned long arg,
+ new = &noop_qdisc;
+ }
+
+- sch_tree_lock(sch);
+- drr_purge_queue(cl);
+- *old = cl->qdisc;
+- cl->qdisc = new;
+- sch_tree_unlock(sch);
++ *old = qdisc_replace(sch, new, &cl->qdisc);
+ return 0;
+ }
+
+diff --git a/net/sched/sch_dsmark.c b/net/sched/sch_dsmark.c
+index 66700a6116aa..7288dda2a7fb 100644
+--- a/net/sched/sch_dsmark.c
++++ b/net/sched/sch_dsmark.c
+@@ -67,13 +67,7 @@ static int dsmark_graft(struct Qdisc *sch, unsigned long arg,
+ new = &noop_qdisc;
+ }
+
+- sch_tree_lock(sch);
+- *old = p->q;
+- p->q = new;
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- sch_tree_unlock(sch);
+-
++ *old = qdisc_replace(sch, new, &p->q);
+ return 0;
+ }
+
+@@ -262,6 +256,7 @@ static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ return err;
+ }
+
++ qdisc_qstats_backlog_inc(sch, skb);
+ sch->q.qlen++;
+
+ return NET_XMIT_SUCCESS;
+@@ -284,6 +279,7 @@ static struct sk_buff *dsmark_dequeue(struct Qdisc *sch)
+ return NULL;
+
+ qdisc_bstats_update(sch, skb);
++ qdisc_qstats_backlog_dec(sch, skb);
+ sch->q.qlen--;
+
+ index = skb->tc_index & (p->indices - 1);
+@@ -399,6 +395,7 @@ static void dsmark_reset(struct Qdisc *sch)
+
+ pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p);
+ qdisc_reset(p->q);
++ sch->qstats.backlog = 0;
+ sch->q.qlen = 0;
+ }
+
+diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c
+index f377702d4b91..4816778566d3 100644
+--- a/net/sched/sch_fq.c
++++ b/net/sched/sch_fq.c
+@@ -659,6 +659,7 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt)
+ struct fq_sched_data *q = qdisc_priv(sch);
+ struct nlattr *tb[TCA_FQ_MAX + 1];
+ int err, drop_count = 0;
++ unsigned drop_len = 0;
+ u32 fq_log;
+
+ if (!opt)
+@@ -733,10 +734,11 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt)
+
+ if (!skb)
+ break;
++ drop_len += qdisc_pkt_len(skb);
+ kfree_skb(skb);
+ drop_count++;
+ }
+- qdisc_tree_decrease_qlen(sch, drop_count);
++ qdisc_tree_reduce_backlog(sch, drop_count, drop_len);
+
+ sch_tree_unlock(sch);
+ return err;
+diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
+index 9291598b5aad..96971c7ab228 100644
+--- a/net/sched/sch_fq_codel.c
++++ b/net/sched/sch_fq_codel.c
+@@ -173,7 +173,7 @@ static unsigned int fq_codel_drop(struct Qdisc *sch)
+ static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ {
+ struct fq_codel_sched_data *q = qdisc_priv(sch);
+- unsigned int idx;
++ unsigned int idx, prev_backlog;
+ struct fq_codel_flow *flow;
+ int uninitialized_var(ret);
+
+@@ -201,6 +201,7 @@ static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ if (++sch->q.qlen <= sch->limit)
+ return NET_XMIT_SUCCESS;
+
++ prev_backlog = sch->qstats.backlog;
+ q->drop_overlimit++;
+ /* Return Congestion Notification only if we dropped a packet
+ * from this flow.
+@@ -209,7 +210,7 @@ static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ return NET_XMIT_CN;
+
+ /* As we dropped a packet, better let upper stack know this */
+- qdisc_tree_decrease_qlen(sch, 1);
++ qdisc_tree_reduce_backlog(sch, 1, prev_backlog - sch->qstats.backlog);
+ return NET_XMIT_SUCCESS;
+ }
+
+@@ -239,6 +240,7 @@ static struct sk_buff *fq_codel_dequeue(struct Qdisc *sch)
+ struct fq_codel_flow *flow;
+ struct list_head *head;
+ u32 prev_drop_count, prev_ecn_mark;
++ unsigned int prev_backlog;
+
+ begin:
+ head = &q->new_flows;
+@@ -257,6 +259,7 @@ begin:
+
+ prev_drop_count = q->cstats.drop_count;
+ prev_ecn_mark = q->cstats.ecn_mark;
++ prev_backlog = sch->qstats.backlog;
+
+ skb = codel_dequeue(sch, &q->cparams, &flow->cvars, &q->cstats,
+ dequeue);
+@@ -274,12 +277,14 @@ begin:
+ }
+ qdisc_bstats_update(sch, skb);
+ flow->deficit -= qdisc_pkt_len(skb);
+- /* We cant call qdisc_tree_decrease_qlen() if our qlen is 0,
++ /* We cant call qdisc_tree_reduce_backlog() if our qlen is 0,
+ * or HTB crashes. Defer it for next round.
+ */
+ if (q->cstats.drop_count && sch->q.qlen) {
+- qdisc_tree_decrease_qlen(sch, q->cstats.drop_count);
++ qdisc_tree_reduce_backlog(sch, q->cstats.drop_count,
++ q->cstats.drop_len);
+ q->cstats.drop_count = 0;
++ q->cstats.drop_len = 0;
+ }
+ return skb;
+ }
+@@ -347,11 +352,13 @@ static int fq_codel_change(struct Qdisc *sch, struct nlattr *opt)
+ while (sch->q.qlen > sch->limit) {
+ struct sk_buff *skb = fq_codel_dequeue(sch);
+
++ q->cstats.drop_len += qdisc_pkt_len(skb);
+ kfree_skb(skb);
+ q->cstats.drop_count++;
+ }
+- qdisc_tree_decrease_qlen(sch, q->cstats.drop_count);
++ qdisc_tree_reduce_backlog(sch, q->cstats.drop_count, q->cstats.drop_len);
+ q->cstats.drop_count = 0;
++ q->cstats.drop_len = 0;
+
+ sch_tree_unlock(sch);
+ return 0;
+diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
+index 3c6f6b774ba6..9821e6d641bb 100644
+--- a/net/sched/sch_generic.c
++++ b/net/sched/sch_generic.c
+@@ -159,12 +159,15 @@ int sch_direct_xmit(struct sk_buff *skb, struct Qdisc *q,
+ if (validate)
+ skb = validate_xmit_skb_list(skb, dev);
+
+- if (skb) {
++ if (likely(skb)) {
+ HARD_TX_LOCK(dev, txq, smp_processor_id());
+ if (!netif_xmit_frozen_or_stopped(txq))
+ skb = dev_hard_start_xmit(skb, dev, txq, &ret);
+
+ HARD_TX_UNLOCK(dev, txq);
++ } else {
++ spin_lock(root_lock);
++ return qdisc_qlen(q);
+ }
+ spin_lock(root_lock);
+
+diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
+index e6c7416d0332..d3e21dac8b40 100644
+--- a/net/sched/sch_hfsc.c
++++ b/net/sched/sch_hfsc.c
+@@ -895,9 +895,10 @@ static void
+ hfsc_purge_queue(struct Qdisc *sch, struct hfsc_class *cl)
+ {
+ unsigned int len = cl->qdisc->q.qlen;
++ unsigned int backlog = cl->qdisc->qstats.backlog;
+
+ qdisc_reset(cl->qdisc);
+- qdisc_tree_decrease_qlen(cl->qdisc, len);
++ qdisc_tree_reduce_backlog(cl->qdisc, len, backlog);
+ }
+
+ static void
+@@ -1215,11 +1216,7 @@ hfsc_graft_class(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ new = &noop_qdisc;
+ }
+
+- sch_tree_lock(sch);
+- hfsc_purge_queue(sch, cl);
+- *old = cl->qdisc;
+- cl->qdisc = new;
+- sch_tree_unlock(sch);
++ *old = qdisc_replace(sch, new, &cl->qdisc);
+ return 0;
+ }
+
+diff --git a/net/sched/sch_hhf.c b/net/sched/sch_hhf.c
+index 15d3aabfe250..792c6f330f77 100644
+--- a/net/sched/sch_hhf.c
++++ b/net/sched/sch_hhf.c
+@@ -390,6 +390,7 @@ static int hhf_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ struct hhf_sched_data *q = qdisc_priv(sch);
+ enum wdrr_bucket_idx idx;
+ struct wdrr_bucket *bucket;
++ unsigned int prev_backlog;
+
+ idx = hhf_classify(skb, sch);
+
+@@ -417,6 +418,7 @@ static int hhf_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ if (++sch->q.qlen <= sch->limit)
+ return NET_XMIT_SUCCESS;
+
++ prev_backlog = sch->qstats.backlog;
+ q->drop_overlimit++;
+ /* Return Congestion Notification only if we dropped a packet from this
+ * bucket.
+@@ -425,7 +427,7 @@ static int hhf_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ return NET_XMIT_CN;
+
+ /* As we dropped a packet, better let upper stack know this. */
+- qdisc_tree_decrease_qlen(sch, 1);
++ qdisc_tree_reduce_backlog(sch, 1, prev_backlog - sch->qstats.backlog);
+ return NET_XMIT_SUCCESS;
+ }
+
+@@ -535,7 +537,7 @@ static int hhf_change(struct Qdisc *sch, struct nlattr *opt)
+ {
+ struct hhf_sched_data *q = qdisc_priv(sch);
+ struct nlattr *tb[TCA_HHF_MAX + 1];
+- unsigned int qlen;
++ unsigned int qlen, prev_backlog;
+ int err;
+ u64 non_hh_quantum;
+ u32 new_quantum = q->quantum;
+@@ -585,12 +587,14 @@ static int hhf_change(struct Qdisc *sch, struct nlattr *opt)
+ }
+
+ qlen = sch->q.qlen;
++ prev_backlog = sch->qstats.backlog;
+ while (sch->q.qlen > sch->limit) {
+ struct sk_buff *skb = hhf_dequeue(sch);
+
+ kfree_skb(skb);
+ }
+- qdisc_tree_decrease_qlen(sch, qlen - sch->q.qlen);
++ qdisc_tree_reduce_backlog(sch, qlen - sch->q.qlen,
++ prev_backlog - sch->qstats.backlog);
+
+ sch_tree_unlock(sch);
+ return 0;
+diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
+index f1acb0f60dc3..ccff00640713 100644
+--- a/net/sched/sch_htb.c
++++ b/net/sched/sch_htb.c
+@@ -600,6 +600,7 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ htb_activate(q, cl);
+ }
+
++ qdisc_qstats_backlog_inc(sch, skb);
+ sch->q.qlen++;
+ return NET_XMIT_SUCCESS;
+ }
+@@ -889,6 +890,7 @@ static struct sk_buff *htb_dequeue(struct Qdisc *sch)
+ ok:
+ qdisc_bstats_update(sch, skb);
+ qdisc_unthrottled(sch);
++ qdisc_qstats_backlog_dec(sch, skb);
+ sch->q.qlen--;
+ return skb;
+ }
+@@ -955,6 +957,7 @@ static unsigned int htb_drop(struct Qdisc *sch)
+ unsigned int len;
+ if (cl->un.leaf.q->ops->drop &&
+ (len = cl->un.leaf.q->ops->drop(cl->un.leaf.q))) {
++ sch->qstats.backlog -= len;
+ sch->q.qlen--;
+ if (!cl->un.leaf.q->q.qlen)
+ htb_deactivate(q, cl);
+@@ -984,12 +987,12 @@ static void htb_reset(struct Qdisc *sch)
+ }
+ cl->prio_activity = 0;
+ cl->cmode = HTB_CAN_SEND;
+-
+ }
+ }
+ qdisc_watchdog_cancel(&q->watchdog);
+ __skb_queue_purge(&q->direct_queue);
+ sch->q.qlen = 0;
++ sch->qstats.backlog = 0;
+ memset(q->hlevel, 0, sizeof(q->hlevel));
+ memset(q->row_mask, 0, sizeof(q->row_mask));
+ for (i = 0; i < TC_HTB_NUMPRIO; i++)
+@@ -1165,14 +1168,7 @@ static int htb_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ cl->common.classid)) == NULL)
+ return -ENOBUFS;
+
+- sch_tree_lock(sch);
+- *old = cl->un.leaf.q;
+- cl->un.leaf.q = new;
+- if (*old != NULL) {
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- }
+- sch_tree_unlock(sch);
++ *old = qdisc_replace(sch, new, &cl->un.leaf.q);
+ return 0;
+ }
+
+@@ -1274,7 +1270,6 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg)
+ {
+ struct htb_sched *q = qdisc_priv(sch);
+ struct htb_class *cl = (struct htb_class *)arg;
+- unsigned int qlen;
+ struct Qdisc *new_q = NULL;
+ int last_child = 0;
+
+@@ -1294,9 +1289,11 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg)
+ sch_tree_lock(sch);
+
+ if (!cl->level) {
+- qlen = cl->un.leaf.q->q.qlen;
++ unsigned int qlen = cl->un.leaf.q->q.qlen;
++ unsigned int backlog = cl->un.leaf.q->qstats.backlog;
++
+ qdisc_reset(cl->un.leaf.q);
+- qdisc_tree_decrease_qlen(cl->un.leaf.q, qlen);
++ qdisc_tree_reduce_backlog(cl->un.leaf.q, qlen, backlog);
+ }
+
+ /* delete from hash and active; remainder in destroy_class */
+@@ -1430,10 +1427,11 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
+ sch_tree_lock(sch);
+ if (parent && !parent->level) {
+ unsigned int qlen = parent->un.leaf.q->q.qlen;
++ unsigned int backlog = parent->un.leaf.q->qstats.backlog;
+
+ /* turn parent into inner node */
+ qdisc_reset(parent->un.leaf.q);
+- qdisc_tree_decrease_qlen(parent->un.leaf.q, qlen);
++ qdisc_tree_reduce_backlog(parent->un.leaf.q, qlen, backlog);
+ qdisc_destroy(parent->un.leaf.q);
+ if (parent->prio_activity)
+ htb_deactivate(q, parent);
+diff --git a/net/sched/sch_multiq.c b/net/sched/sch_multiq.c
+index 42dd218871e0..23437d62a8db 100644
+--- a/net/sched/sch_multiq.c
++++ b/net/sched/sch_multiq.c
+@@ -218,7 +218,8 @@ static int multiq_tune(struct Qdisc *sch, struct nlattr *opt)
+ if (q->queues[i] != &noop_qdisc) {
+ struct Qdisc *child = q->queues[i];
+ q->queues[i] = &noop_qdisc;
+- qdisc_tree_decrease_qlen(child, child->q.qlen);
++ qdisc_tree_reduce_backlog(child, child->q.qlen,
++ child->qstats.backlog);
+ qdisc_destroy(child);
+ }
+ }
+@@ -238,8 +239,9 @@ static int multiq_tune(struct Qdisc *sch, struct nlattr *opt)
+ q->queues[i] = child;
+
+ if (old != &noop_qdisc) {
+- qdisc_tree_decrease_qlen(old,
+- old->q.qlen);
++ qdisc_tree_reduce_backlog(old,
++ old->q.qlen,
++ old->qstats.backlog);
+ qdisc_destroy(old);
+ }
+ sch_tree_unlock(sch);
+@@ -303,13 +305,7 @@ static int multiq_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ if (new == NULL)
+ new = &noop_qdisc;
+
+- sch_tree_lock(sch);
+- *old = q->queues[band];
+- q->queues[band] = new;
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- sch_tree_unlock(sch);
+-
++ *old = qdisc_replace(sch, new, &q->queues[band]);
+ return 0;
+ }
+
+diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
+index 956ead2cab9a..80124c1edbba 100644
+--- a/net/sched/sch_netem.c
++++ b/net/sched/sch_netem.c
+@@ -395,6 +395,25 @@ static void tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
+ sch->q.qlen++;
+ }
+
++/* netem can't properly corrupt a megapacket (like we get from GSO), so instead
++ * when we statistically choose to corrupt one, we instead segment it, returning
++ * the first packet to be corrupted, and re-enqueue the remaining frames
++ */
++static struct sk_buff *netem_segment(struct sk_buff *skb, struct Qdisc *sch)
++{
++ struct sk_buff *segs;
++ netdev_features_t features = netif_skb_features(skb);
++
++ segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK);
++
++ if (IS_ERR_OR_NULL(segs)) {
++ qdisc_reshape_fail(skb, sch);
++ return NULL;
++ }
++ consume_skb(skb);
++ return segs;
++}
++
+ /*
+ * Insert one skb into qdisc.
+ * Note: parent depends on return value to account for queue length.
+@@ -407,7 +426,11 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ /* We don't fill cb now as skb_unshare() may invalidate it */
+ struct netem_skb_cb *cb;
+ struct sk_buff *skb2;
++ struct sk_buff *segs = NULL;
++ unsigned int len = 0, last_len, prev_len = qdisc_pkt_len(skb);
++ int nb = 0;
+ int count = 1;
++ int rc = NET_XMIT_SUCCESS;
+
+ /* Random duplication */
+ if (q->duplicate && q->duplicate >= get_crandom(&q->dup_cor))
+@@ -453,10 +476,23 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ * do it now in software before we mangle it.
+ */
+ if (q->corrupt && q->corrupt >= get_crandom(&q->corrupt_cor)) {
++ if (skb_is_gso(skb)) {
++ segs = netem_segment(skb, sch);
++ if (!segs)
++ return NET_XMIT_DROP;
++ } else {
++ segs = skb;
++ }
++
++ skb = segs;
++ segs = segs->next;
++
+ if (!(skb = skb_unshare(skb, GFP_ATOMIC)) ||
+ (skb->ip_summed == CHECKSUM_PARTIAL &&
+- skb_checksum_help(skb)))
+- return qdisc_drop(skb, sch);
++ skb_checksum_help(skb))) {
++ rc = qdisc_drop(skb, sch);
++ goto finish_segs;
++ }
+
+ skb->data[prandom_u32() % skb_headlen(skb)] ^=
+ 1<<(prandom_u32() % 8);
+@@ -516,6 +552,27 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ sch->qstats.requeues++;
+ }
+
++finish_segs:
++ if (segs) {
++ while (segs) {
++ skb2 = segs->next;
++ segs->next = NULL;
++ qdisc_skb_cb(segs)->pkt_len = segs->len;
++ last_len = segs->len;
++ rc = qdisc_enqueue(segs, sch);
++ if (rc != NET_XMIT_SUCCESS) {
++ if (net_xmit_drop_count(rc))
++ qdisc_qstats_drop(sch);
++ } else {
++ nb++;
++ len += last_len;
++ }
++ segs = skb2;
++ }
++ sch->q.qlen += nb;
++ if (nb > 1)
++ qdisc_tree_reduce_backlog(sch, 1 - nb, prev_len - len);
++ }
+ return NET_XMIT_SUCCESS;
+ }
+
+@@ -598,7 +655,8 @@ deliver:
+ if (unlikely(err != NET_XMIT_SUCCESS)) {
+ if (net_xmit_drop_count(err)) {
+ qdisc_qstats_drop(sch);
+- qdisc_tree_decrease_qlen(sch, 1);
++ qdisc_tree_reduce_backlog(sch, 1,
++ qdisc_pkt_len(skb));
+ }
+ }
+ goto tfifo_dequeue;
+@@ -1037,15 +1095,7 @@ static int netem_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ {
+ struct netem_sched_data *q = qdisc_priv(sch);
+
+- sch_tree_lock(sch);
+- *old = q->qdisc;
+- q->qdisc = new;
+- if (*old) {
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- }
+- sch_tree_unlock(sch);
+-
++ *old = qdisc_replace(sch, new, &q->qdisc);
+ return 0;
+ }
+
+diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c
+index b783a446d884..71ae3b9629f9 100644
+--- a/net/sched/sch_pie.c
++++ b/net/sched/sch_pie.c
+@@ -183,7 +183,7 @@ static int pie_change(struct Qdisc *sch, struct nlattr *opt)
+ {
+ struct pie_sched_data *q = qdisc_priv(sch);
+ struct nlattr *tb[TCA_PIE_MAX + 1];
+- unsigned int qlen;
++ unsigned int qlen, dropped = 0;
+ int err;
+
+ if (!opt)
+@@ -232,10 +232,11 @@ static int pie_change(struct Qdisc *sch, struct nlattr *opt)
+ while (sch->q.qlen > sch->limit) {
+ struct sk_buff *skb = __skb_dequeue(&sch->q);
+
++ dropped += qdisc_pkt_len(skb);
+ qdisc_qstats_backlog_dec(sch, skb);
+ qdisc_drop(skb, sch);
+ }
+- qdisc_tree_decrease_qlen(sch, qlen - sch->q.qlen);
++ qdisc_tree_reduce_backlog(sch, qlen - sch->q.qlen, dropped);
+
+ sch_tree_unlock(sch);
+ return 0;
+diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
+index 8e5cd34aaa74..e671b1a4e815 100644
+--- a/net/sched/sch_prio.c
++++ b/net/sched/sch_prio.c
+@@ -191,7 +191,7 @@ static int prio_tune(struct Qdisc *sch, struct nlattr *opt)
+ struct Qdisc *child = q->queues[i];
+ q->queues[i] = &noop_qdisc;
+ if (child != &noop_qdisc) {
+- qdisc_tree_decrease_qlen(child, child->q.qlen);
++ qdisc_tree_reduce_backlog(child, child->q.qlen, child->qstats.backlog);
+ qdisc_destroy(child);
+ }
+ }
+@@ -210,8 +210,9 @@ static int prio_tune(struct Qdisc *sch, struct nlattr *opt)
+ q->queues[i] = child;
+
+ if (old != &noop_qdisc) {
+- qdisc_tree_decrease_qlen(old,
+- old->q.qlen);
++ qdisc_tree_reduce_backlog(old,
++ old->q.qlen,
++ old->qstats.backlog);
+ qdisc_destroy(old);
+ }
+ sch_tree_unlock(sch);
+@@ -268,13 +269,7 @@ static int prio_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ if (new == NULL)
+ new = &noop_qdisc;
+
+- sch_tree_lock(sch);
+- *old = q->queues[band];
+- q->queues[band] = new;
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- sch_tree_unlock(sch);
+-
++ *old = qdisc_replace(sch, new, &q->queues[band]);
+ return 0;
+ }
+
+diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
+index 3ec7e88a43ca..e2b8fd47008b 100644
+--- a/net/sched/sch_qfq.c
++++ b/net/sched/sch_qfq.c
+@@ -221,9 +221,10 @@ static struct qfq_class *qfq_find_class(struct Qdisc *sch, u32 classid)
+ static void qfq_purge_queue(struct qfq_class *cl)
+ {
+ unsigned int len = cl->qdisc->q.qlen;
++ unsigned int backlog = cl->qdisc->qstats.backlog;
+
+ qdisc_reset(cl->qdisc);
+- qdisc_tree_decrease_qlen(cl->qdisc, len);
++ qdisc_tree_reduce_backlog(cl->qdisc, len, backlog);
+ }
+
+ static const struct nla_policy qfq_policy[TCA_QFQ_MAX + 1] = {
+@@ -619,11 +620,7 @@ static int qfq_graft_class(struct Qdisc *sch, unsigned long arg,
+ new = &noop_qdisc;
+ }
+
+- sch_tree_lock(sch);
+- qfq_purge_queue(cl);
+- *old = cl->qdisc;
+- cl->qdisc = new;
+- sch_tree_unlock(sch);
++ *old = qdisc_replace(sch, new, &cl->qdisc);
+ return 0;
+ }
+
+diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
+index 6c0534cc7758..8c0508c0e287 100644
+--- a/net/sched/sch_red.c
++++ b/net/sched/sch_red.c
+@@ -210,7 +210,8 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt)
+ q->flags = ctl->flags;
+ q->limit = ctl->limit;
+ if (child) {
+- qdisc_tree_decrease_qlen(q->qdisc, q->qdisc->q.qlen);
++ qdisc_tree_reduce_backlog(q->qdisc, q->qdisc->q.qlen,
++ q->qdisc->qstats.backlog);
+ qdisc_destroy(q->qdisc);
+ q->qdisc = child;
+ }
+@@ -313,12 +314,7 @@ static int red_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ if (new == NULL)
+ new = &noop_qdisc;
+
+- sch_tree_lock(sch);
+- *old = q->qdisc;
+- q->qdisc = new;
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- sch_tree_unlock(sch);
++ *old = qdisc_replace(sch, new, &q->qdisc);
+ return 0;
+ }
+
+diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c
+index 5819dd82630d..e1d634e3c255 100644
+--- a/net/sched/sch_sfb.c
++++ b/net/sched/sch_sfb.c
+@@ -518,7 +518,8 @@ static int sfb_change(struct Qdisc *sch, struct nlattr *opt)
+
+ sch_tree_lock(sch);
+
+- qdisc_tree_decrease_qlen(q->qdisc, q->qdisc->q.qlen);
++ qdisc_tree_reduce_backlog(q->qdisc, q->qdisc->q.qlen,
++ q->qdisc->qstats.backlog);
+ qdisc_destroy(q->qdisc);
+ q->qdisc = child;
+
+@@ -614,12 +615,7 @@ static int sfb_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ if (new == NULL)
+ new = &noop_qdisc;
+
+- sch_tree_lock(sch);
+- *old = q->qdisc;
+- q->qdisc = new;
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- sch_tree_unlock(sch);
++ *old = qdisc_replace(sch, new, &q->qdisc);
+ return 0;
+ }
+
+diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
+index b877140beda5..4417fb25166f 100644
+--- a/net/sched/sch_sfq.c
++++ b/net/sched/sch_sfq.c
+@@ -369,7 +369,7 @@ static int
+ sfq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+ {
+ struct sfq_sched_data *q = qdisc_priv(sch);
+- unsigned int hash;
++ unsigned int hash, dropped;
+ sfq_index x, qlen;
+ struct sfq_slot *slot;
+ int uninitialized_var(ret);
+@@ -484,7 +484,7 @@ enqueue:
+ return NET_XMIT_SUCCESS;
+
+ qlen = slot->qlen;
+- sfq_drop(sch);
++ dropped = sfq_drop(sch);
+ /* Return Congestion Notification only if we dropped a packet
+ * from this flow.
+ */
+@@ -492,7 +492,7 @@ enqueue:
+ return NET_XMIT_CN;
+
+ /* As we dropped a packet, better let upper stack know this */
+- qdisc_tree_decrease_qlen(sch, 1);
++ qdisc_tree_reduce_backlog(sch, 1, dropped);
+ return NET_XMIT_SUCCESS;
+ }
+
+@@ -560,6 +560,7 @@ static void sfq_rehash(struct Qdisc *sch)
+ struct sfq_slot *slot;
+ struct sk_buff_head list;
+ int dropped = 0;
++ unsigned int drop_len = 0;
+
+ __skb_queue_head_init(&list);
+
+@@ -588,6 +589,7 @@ static void sfq_rehash(struct Qdisc *sch)
+ if (x >= SFQ_MAX_FLOWS) {
+ drop:
+ qdisc_qstats_backlog_dec(sch, skb);
++ drop_len += qdisc_pkt_len(skb);
+ kfree_skb(skb);
+ dropped++;
+ continue;
+@@ -617,7 +619,7 @@ drop:
+ }
+ }
+ sch->q.qlen -= dropped;
+- qdisc_tree_decrease_qlen(sch, dropped);
++ qdisc_tree_reduce_backlog(sch, dropped, drop_len);
+ }
+
+ static void sfq_perturbation(unsigned long arg)
+@@ -641,7 +643,7 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt)
+ struct sfq_sched_data *q = qdisc_priv(sch);
+ struct tc_sfq_qopt *ctl = nla_data(opt);
+ struct tc_sfq_qopt_v1 *ctl_v1 = NULL;
+- unsigned int qlen;
++ unsigned int qlen, dropped = 0;
+ struct red_parms *p = NULL;
+
+ if (opt->nla_len < nla_attr_size(sizeof(*ctl)))
+@@ -690,8 +692,8 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt)
+
+ qlen = sch->q.qlen;
+ while (sch->q.qlen > q->limit)
+- sfq_drop(sch);
+- qdisc_tree_decrease_qlen(sch, qlen - sch->q.qlen);
++ dropped += sfq_drop(sch);
++ qdisc_tree_reduce_backlog(sch, qlen - sch->q.qlen, dropped);
+
+ del_timer(&q->perturb_timer);
+ if (q->perturb_period) {
+diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
+index a4afde14e865..c2fbde742f37 100644
+--- a/net/sched/sch_tbf.c
++++ b/net/sched/sch_tbf.c
+@@ -160,6 +160,7 @@ static int tbf_segment(struct sk_buff *skb, struct Qdisc *sch)
+ struct tbf_sched_data *q = qdisc_priv(sch);
+ struct sk_buff *segs, *nskb;
+ netdev_features_t features = netif_skb_features(skb);
++ unsigned int len = 0, prev_len = qdisc_pkt_len(skb);
+ int ret, nb;
+
+ segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK);
+@@ -172,6 +173,7 @@ static int tbf_segment(struct sk_buff *skb, struct Qdisc *sch)
+ nskb = segs->next;
+ segs->next = NULL;
+ qdisc_skb_cb(segs)->pkt_len = segs->len;
++ len += segs->len;
+ ret = qdisc_enqueue(segs, q->qdisc);
+ if (ret != NET_XMIT_SUCCESS) {
+ if (net_xmit_drop_count(ret))
+@@ -183,7 +185,7 @@ static int tbf_segment(struct sk_buff *skb, struct Qdisc *sch)
+ }
+ sch->q.qlen += nb;
+ if (nb > 1)
+- qdisc_tree_decrease_qlen(sch, 1 - nb);
++ qdisc_tree_reduce_backlog(sch, 1 - nb, prev_len - len);
+ consume_skb(skb);
+ return nb > 0 ? NET_XMIT_SUCCESS : NET_XMIT_DROP;
+ }
+@@ -399,7 +401,8 @@ static int tbf_change(struct Qdisc *sch, struct nlattr *opt)
+
+ sch_tree_lock(sch);
+ if (child) {
+- qdisc_tree_decrease_qlen(q->qdisc, q->qdisc->q.qlen);
++ qdisc_tree_reduce_backlog(q->qdisc, q->qdisc->q.qlen,
++ q->qdisc->qstats.backlog);
+ qdisc_destroy(q->qdisc);
+ q->qdisc = child;
+ }
+@@ -502,13 +505,7 @@ static int tbf_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
+ if (new == NULL)
+ new = &noop_qdisc;
+
+- sch_tree_lock(sch);
+- *old = q->qdisc;
+- q->qdisc = new;
+- qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
+- qdisc_reset(*old);
+- sch_tree_unlock(sch);
+-
++ *old = qdisc_replace(sch, new, &q->qdisc);
+ return 0;
+ }
+
+diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
+index 3267a5cbb3e8..18361cbfc882 100644
+--- a/net/sctp/ipv6.c
++++ b/net/sctp/ipv6.c
+@@ -519,6 +519,8 @@ static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
+ }
+ return 0;
+ }
++ if (addr1->v6.sin6_port != addr2->v6.sin6_port)
++ return 0;
+ if (!ipv6_addr_equal(&addr1->v6.sin6_addr, &addr2->v6.sin6_addr))
+ return 0;
+ /* If this is a linklocal address, compare the scope_id. */
+diff --git a/net/socket.c b/net/socket.c
+index dcbfa868e398..e66e4f357506 100644
+--- a/net/socket.c
++++ b/net/socket.c
+@@ -2247,31 +2247,31 @@ int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
+ break;
+ }
+
+-out_put:
+- fput_light(sock->file, fput_needed);
+-
+ if (err == 0)
+- return datagrams;
++ goto out_put;
+
+- if (datagrams != 0) {
++ if (datagrams == 0) {
++ datagrams = err;
++ goto out_put;
++ }
++
++ /*
++ * We may return less entries than requested (vlen) if the
++ * sock is non block and there aren't enough datagrams...
++ */
++ if (err != -EAGAIN) {
+ /*
+- * We may return less entries than requested (vlen) if the
+- * sock is non block and there aren't enough datagrams...
++ * ... or if recvmsg returns an error after we
++ * received some datagrams, where we record the
++ * error to return on the next call or if the
++ * app asks about it using getsockopt(SO_ERROR).
+ */
+- if (err != -EAGAIN) {
+- /*
+- * ... or if recvmsg returns an error after we
+- * received some datagrams, where we record the
+- * error to return on the next call or if the
+- * app asks about it using getsockopt(SO_ERROR).
+- */
+- sock->sk->sk_err = -err;
+- }
+-
+- return datagrams;
++ sock->sk->sk_err = -err;
+ }
++out_put:
++ fput_light(sock->file, fput_needed);
+
+- return err;
++ return datagrams;
+ }
+
+ SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg,
+diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
+index 8d79e70bd978..9ec709b9707c 100644
+--- a/net/sunrpc/cache.c
++++ b/net/sunrpc/cache.c
+@@ -1175,14 +1175,14 @@ int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h)
+ }
+
+ crq->q.reader = 0;
+- crq->item = cache_get(h);
+ crq->buf = buf;
+ crq->len = 0;
+ crq->readers = 0;
+ spin_lock(&queue_lock);
+- if (test_bit(CACHE_PENDING, &h->flags))
++ if (test_bit(CACHE_PENDING, &h->flags)) {
++ crq->item = cache_get(h);
+ list_add_tail(&crq->q.list, &detail->queue);
+- else
++ } else
+ /* Lost a race, no longer PENDING, so don't enqueue */
+ ret = -EAGAIN;
+ spin_unlock(&queue_lock);
+diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
+index e6ce1517367f..16e831dcfde0 100644
+--- a/net/sunrpc/clnt.c
++++ b/net/sunrpc/clnt.c
+@@ -442,7 +442,7 @@ out_no_rpciod:
+ return ERR_PTR(err);
+ }
+
+-struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
++static struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
+ struct rpc_xprt *xprt)
+ {
+ struct rpc_clnt *clnt = NULL;
+@@ -474,7 +474,6 @@ struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
+
+ return clnt;
+ }
+-EXPORT_SYMBOL_GPL(rpc_create_xprt);
+
+ /**
+ * rpc_create - create an RPC client and transport with one call
+@@ -500,6 +499,15 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
+ };
+ char servername[48];
+
++ if (args->bc_xprt) {
++ WARN_ON(args->protocol != XPRT_TRANSPORT_BC_TCP);
++ xprt = args->bc_xprt->xpt_bc_xprt;
++ if (xprt) {
++ xprt_get(xprt);
++ return rpc_create_xprt(args, xprt);
++ }
++ }
++
+ if (args->flags & RPC_CLNT_CREATE_INFINITE_SLOTS)
+ xprtargs.flags |= XPRT_CREATE_INFINITE_SLOTS;
+ if (args->flags & RPC_CLNT_CREATE_NO_IDLE_TIMEOUT)
+diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
+index ce9121e8e990..e5ec86dd8dc1 100644
+--- a/net/tipc/netlink_compat.c
++++ b/net/tipc/netlink_compat.c
+@@ -712,7 +712,7 @@ static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg,
+ goto out;
+
+ tipc_tlv_sprintf(msg->rep, "%-10u %s",
+- nla_get_u32(publ[TIPC_NLA_PUBL_REF]),
++ nla_get_u32(publ[TIPC_NLA_PUBL_KEY]),
+ scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]);
+ out:
+ tipc_tlv_sprintf(msg->rep, "\n");
+diff --git a/net/tipc/socket.c b/net/tipc/socket.c
+index 20cc6df07157..d41d424b9913 100644
+--- a/net/tipc/socket.c
++++ b/net/tipc/socket.c
+@@ -2804,6 +2804,9 @@ int tipc_nl_publ_dump(struct sk_buff *skb, struct netlink_callback *cb)
+ if (err)
+ return err;
+
++ if (!attrs[TIPC_NLA_SOCK])
++ return -EINVAL;
++
+ err = nla_parse_nested(sock, TIPC_NLA_SOCK_MAX,
+ attrs[TIPC_NLA_SOCK],
+ tipc_nl_sock_policy);
+diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
+index 535a642a1688..03da879008d7 100644
+--- a/net/unix/af_unix.c
++++ b/net/unix/af_unix.c
+@@ -935,32 +935,20 @@ fail:
+ return NULL;
+ }
+
+-static int unix_mknod(const char *sun_path, umode_t mode, struct path *res)
++static int unix_mknod(struct dentry *dentry, struct path *path, umode_t mode,
++ struct path *res)
+ {
+- struct dentry *dentry;
+- struct path path;
+- int err = 0;
+- /*
+- * Get the parent directory, calculate the hash for last
+- * component.
+- */
+- dentry = kern_path_create(AT_FDCWD, sun_path, &path, 0);
+- err = PTR_ERR(dentry);
+- if (IS_ERR(dentry))
+- return err;
++ int err;
+
+- /*
+- * All right, let's create it.
+- */
+- err = security_path_mknod(&path, dentry, mode, 0);
++ err = security_path_mknod(path, dentry, mode, 0);
+ if (!err) {
+- err = vfs_mknod(d_inode(path.dentry), dentry, mode, 0);
++ err = vfs_mknod(d_inode(path->dentry), dentry, mode, 0);
+ if (!err) {
+- res->mnt = mntget(path.mnt);
++ res->mnt = mntget(path->mnt);
+ res->dentry = dget(dentry);
+ }
+ }
+- done_path_create(&path, dentry);
++
+ return err;
+ }
+
+@@ -971,10 +959,12 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ struct unix_sock *u = unix_sk(sk);
+ struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr;
+ char *sun_path = sunaddr->sun_path;
+- int err;
++ int err, name_err;
+ unsigned int hash;
+ struct unix_address *addr;
+ struct hlist_head *list;
++ struct path path;
++ struct dentry *dentry;
+
+ err = -EINVAL;
+ if (sunaddr->sun_family != AF_UNIX)
+@@ -990,14 +980,34 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ goto out;
+ addr_len = err;
+
++ name_err = 0;
++ dentry = NULL;
++ if (sun_path[0]) {
++ /* Get the parent directory, calculate the hash for last
++ * component.
++ */
++ dentry = kern_path_create(AT_FDCWD, sun_path, &path, 0);
++
++ if (IS_ERR(dentry)) {
++ /* delay report until after 'already bound' check */
++ name_err = PTR_ERR(dentry);
++ dentry = NULL;
++ }
++ }
++
+ err = mutex_lock_interruptible(&u->readlock);
+ if (err)
+- goto out;
++ goto out_path;
+
+ err = -EINVAL;
+ if (u->addr)
+ goto out_up;
+
++ if (name_err) {
++ err = name_err == -EEXIST ? -EADDRINUSE : name_err;
++ goto out_up;
++ }
++
+ err = -ENOMEM;
+ addr = kmalloc(sizeof(*addr)+addr_len, GFP_KERNEL);
+ if (!addr)
+@@ -1008,11 +1018,11 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ addr->hash = hash ^ sk->sk_type;
+ atomic_set(&addr->refcnt, 1);
+
+- if (sun_path[0]) {
+- struct path path;
++ if (dentry) {
++ struct path u_path;
+ umode_t mode = S_IFSOCK |
+ (SOCK_INODE(sock)->i_mode & ~current_umask());
+- err = unix_mknod(sun_path, mode, &path);
++ err = unix_mknod(dentry, &path, mode, &u_path);
+ if (err) {
+ if (err == -EEXIST)
+ err = -EADDRINUSE;
+@@ -1020,9 +1030,9 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ goto out_up;
+ }
+ addr->hash = UNIX_HASH_SIZE;
+- hash = d_backing_inode(path.dentry)->i_ino & (UNIX_HASH_SIZE-1);
++ hash = d_backing_inode(dentry)->i_ino & (UNIX_HASH_SIZE - 1);
+ spin_lock(&unix_table_lock);
+- u->path = path;
++ u->path = u_path;
+ list = &unix_socket_table[hash];
+ } else {
+ spin_lock(&unix_table_lock);
+@@ -1045,6 +1055,10 @@ out_unlock:
+ spin_unlock(&unix_table_lock);
+ out_up:
+ mutex_unlock(&u->readlock);
++out_path:
++ if (dentry)
++ done_path_create(&path, dentry);
++
+ out:
+ return err;
+ }
+diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
+index 2ec86e652a19..e1c69b216db3 100644
+--- a/net/vmw_vsock/af_vsock.c
++++ b/net/vmw_vsock/af_vsock.c
+@@ -1794,27 +1794,8 @@ vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
+ else if (sk->sk_shutdown & RCV_SHUTDOWN)
+ err = 0;
+
+- if (copied > 0) {
+- /* We only do these additional bookkeeping/notification steps
+- * if we actually copied something out of the queue pair
+- * instead of just peeking ahead.
+- */
+-
+- if (!(flags & MSG_PEEK)) {
+- /* If the other side has shutdown for sending and there
+- * is nothing more to read, then modify the socket
+- * state.
+- */
+- if (vsk->peer_shutdown & SEND_SHUTDOWN) {
+- if (vsock_stream_has_data(vsk) <= 0) {
+- sk->sk_state = SS_UNCONNECTED;
+- sock_set_flag(sk, SOCK_DONE);
+- sk->sk_state_change(sk);
+- }
+- }
+- }
++ if (copied > 0)
+ err = copied;
+- }
+
+ out_wait:
+ finish_wait(sk_sleep(sk), &wait);
+diff --git a/net/x25/x25_facilities.c b/net/x25/x25_facilities.c
+index 7ecd04c21360..997ff7b2509b 100644
+--- a/net/x25/x25_facilities.c
++++ b/net/x25/x25_facilities.c
+@@ -277,6 +277,7 @@ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk,
+
+ memset(&theirs, 0, sizeof(theirs));
+ memcpy(new, ours, sizeof(*new));
++ memset(dte, 0, sizeof(*dte));
+
+ len = x25_parse_facilities(skb, &theirs, dte, &x25->vc_facil_mask);
+ if (len < 0)
+diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
+index b58286ecd156..cbaf52c837f4 100644
+--- a/net/xfrm/xfrm_input.c
++++ b/net/xfrm/xfrm_input.c
+@@ -292,12 +292,15 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
+ XFRM_SKB_CB(skb)->seq.input.hi = seq_hi;
+
+ skb_dst_force(skb);
++ dev_hold(skb->dev);
+
+ nexthdr = x->type->input(x, skb);
+
+ if (nexthdr == -EINPROGRESS)
+ return 0;
+ resume:
++ dev_put(skb->dev);
++
+ spin_lock(&x->lock);
+ if (nexthdr <= 0) {
+ if (nexthdr == -EBADMSG) {
+diff --git a/security/keys/key.c b/security/keys/key.c
+index aee2ec5a18fc..970b58ee3e20 100644
+--- a/security/keys/key.c
++++ b/security/keys/key.c
+@@ -578,7 +578,7 @@ int key_reject_and_link(struct key *key,
+
+ mutex_unlock(&key_construction_mutex);
+
+- if (keyring)
++ if (keyring && link_ret == 0)
+ __key_link_end(keyring, &key->index_key, edit);
+
+ /* wake up anyone waiting for a key to be constructed */
+diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
+index 7d45645f10ba..253a2da05cf0 100644
+--- a/sound/core/pcm_lib.c
++++ b/sound/core/pcm_lib.c
+@@ -322,7 +322,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
+ char name[16];
+ snd_pcm_debug_name(substream, name, sizeof(name));
+ pcm_err(substream->pcm,
+- "BUG: %s, pos = %ld, buffer size = %ld, period size = %ld\n",
++ "invalid position: %s, pos = %ld, buffer size = %ld, period size = %ld\n",
+ name, pos, runtime->buffer_size,
+ runtime->period_size);
+ }
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index bf48e71f73cd..1782555fcaca 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -1051,8 +1051,8 @@ static int snd_timer_s_start(struct snd_timer * timer)
+ njiff += timer->sticks - priv->correction;
+ priv->correction = 0;
+ }
+- priv->last_expires = priv->tlist.expires = njiff;
+- add_timer(&priv->tlist);
++ priv->last_expires = njiff;
++ mod_timer(&priv->tlist, njiff);
+ return 0;
+ }
+
+diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
+index c5d5217a4180..4df5dc1a3765 100644
+--- a/sound/drivers/dummy.c
++++ b/sound/drivers/dummy.c
+@@ -420,6 +420,7 @@ static int dummy_hrtimer_stop(struct snd_pcm_substream *substream)
+
+ static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm)
+ {
++ hrtimer_cancel(&dpcm->timer);
+ tasklet_kill(&dpcm->tasklet);
+ }
+
+diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c
+index 961ca32ee989..37f2dacd6691 100644
+--- a/sound/hda/hdac_device.c
++++ b/sound/hda/hdac_device.c
+@@ -261,13 +261,11 @@ EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
+ int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
+ int parm)
+ {
+- int val;
++ unsigned int cmd, val;
+
+- if (codec->regmap)
+- regcache_cache_bypass(codec->regmap, true);
+- val = snd_hdac_read_parm(codec, nid, parm);
+- if (codec->regmap)
+- regcache_cache_bypass(codec->regmap, false);
++ cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
++ if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0)
++ return -1;
+ return val;
+ }
+ EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
+diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c
+index b0ed870ffb88..f3eb78e47ced 100644
+--- a/sound/hda/hdac_regmap.c
++++ b/sound/hda/hdac_regmap.c
+@@ -411,7 +411,7 @@ int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg,
+ err = reg_raw_write(codec, reg, val);
+ if (err == -EAGAIN) {
+ err = snd_hdac_power_up_pm(codec);
+- if (!err)
++ if (err >= 0)
+ err = reg_raw_write(codec, reg, val);
+ snd_hdac_power_down_pm(codec);
+ }
+@@ -420,14 +420,30 @@ int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg,
+ EXPORT_SYMBOL_GPL(snd_hdac_regmap_write_raw);
+
+ static int reg_raw_read(struct hdac_device *codec, unsigned int reg,
+- unsigned int *val)
++ unsigned int *val, bool uncached)
+ {
+- if (!codec->regmap)
++ if (uncached || !codec->regmap)
+ return hda_reg_read(codec, reg, val);
+ else
+ return regmap_read(codec->regmap, reg, val);
+ }
+
++static int __snd_hdac_regmap_read_raw(struct hdac_device *codec,
++ unsigned int reg, unsigned int *val,
++ bool uncached)
++{
++ int err;
++
++ err = reg_raw_read(codec, reg, val, uncached);
++ if (err == -EAGAIN) {
++ err = snd_hdac_power_up_pm(codec);
++ if (err >= 0)
++ err = reg_raw_read(codec, reg, val, uncached);
++ snd_hdac_power_down_pm(codec);
++ }
++ return err;
++}
++
+ /**
+ * snd_hdac_regmap_read_raw - read a pseudo register with power mgmt
+ * @codec: the codec object
+@@ -439,19 +455,19 @@ static int reg_raw_read(struct hdac_device *codec, unsigned int reg,
+ int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg,
+ unsigned int *val)
+ {
+- int err;
+-
+- err = reg_raw_read(codec, reg, val);
+- if (err == -EAGAIN) {
+- err = snd_hdac_power_up_pm(codec);
+- if (!err)
+- err = reg_raw_read(codec, reg, val);
+- snd_hdac_power_down_pm(codec);
+- }
+- return err;
++ return __snd_hdac_regmap_read_raw(codec, reg, val, false);
+ }
+ EXPORT_SYMBOL_GPL(snd_hdac_regmap_read_raw);
+
++/* Works like snd_hdac_regmap_read_raw(), but this doesn't read from the
++ * cache but always via hda verbs.
++ */
++int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec,
++ unsigned int reg, unsigned int *val)
++{
++ return __snd_hdac_regmap_read_raw(codec, reg, val, true);
++}
++
+ /**
+ * snd_hdac_regmap_update_raw - update a pseudo register with power mgmt
+ * @codec: the codec object
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index a62872f7b41a..abf8d342f1f4 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5504,6 +5504,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x503c, "Thinkpad L450", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x504a, "ThinkPad X260", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x504b, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
++ SND_PCI_QUIRK(0x17aa, 0x5050, "Thinkpad T560p", ALC292_FIXUP_TPT460),
++ SND_PCI_QUIRK(0x17aa, 0x5053, "Thinkpad T460", ALC292_FIXUP_TPT460),
+ SND_PCI_QUIRK(0x17aa, 0x5109, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
+ SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD),
+@@ -5635,8 +5637,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ {0x15, 0x0221401f}, \
+ {0x1a, 0x411111f0}, \
+ {0x1b, 0x411111f0}, \
+- {0x1d, 0x40700001}, \
+- {0x1e, 0x411111f0}
++ {0x1d, 0x40700001}
+
+ #define ALC298_STANDARD_PINS \
+ {0x18, 0x411111f0}, \
+@@ -5920,35 +5921,48 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ {0x13, 0x411111f0},
+ {0x16, 0x01014020},
+ {0x18, 0x411111f0},
+- {0x19, 0x01a19030}),
++ {0x19, 0x01a19030},
++ {0x1e, 0x411111f0}),
+ SND_HDA_PIN_QUIRK(0x10ec0292, 0x1028, "Dell", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE,
+ ALC292_STANDARD_PINS,
+ {0x12, 0x90a60140},
+ {0x13, 0x411111f0},
+ {0x16, 0x01014020},
+ {0x18, 0x02a19031},
+- {0x19, 0x01a1903e}),
++ {0x19, 0x01a1903e},
++ {0x1e, 0x411111f0}),
+ SND_HDA_PIN_QUIRK(0x10ec0292, 0x1028, "Dell", ALC269_FIXUP_DELL3_MIC_NO_PRESENCE,
+ ALC292_STANDARD_PINS,
+ {0x12, 0x90a60140},
+ {0x13, 0x411111f0},
+ {0x16, 0x411111f0},
+ {0x18, 0x411111f0},
+- {0x19, 0x411111f0}),
++ {0x19, 0x411111f0},
++ {0x1e, 0x411111f0}),
+ SND_HDA_PIN_QUIRK(0x10ec0293, 0x1028, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC292_STANDARD_PINS,
+ {0x12, 0x40000000},
+ {0x13, 0x90a60140},
+ {0x16, 0x21014020},
+ {0x18, 0x411111f0},
+- {0x19, 0x21a19030}),
++ {0x19, 0x21a19030},
++ {0x1e, 0x411111f0}),
+ SND_HDA_PIN_QUIRK(0x10ec0293, 0x1028, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC292_STANDARD_PINS,
+ {0x12, 0x40000000},
+ {0x13, 0x90a60140},
+ {0x16, 0x411111f0},
+ {0x18, 0x411111f0},
+- {0x19, 0x411111f0}),
++ {0x19, 0x411111f0},
++ {0x1e, 0x411111f0}),
++ SND_HDA_PIN_QUIRK(0x10ec0293, 0x1028, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC292_STANDARD_PINS,
++ {0x12, 0x40000000},
++ {0x13, 0x90a60140},
++ {0x16, 0x21014020},
++ {0x18, 0x411111f0},
++ {0x19, 0x21a19030},
++ {0x1e, 0x411111ff}),
+ SND_HDA_PIN_QUIRK(0x10ec0298, 0x1028, "Dell", ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC298_STANDARD_PINS,
+ {0x12, 0x90a60130},
+diff --git a/sound/soc/codecs/ssm4567.c b/sound/soc/codecs/ssm4567.c
+index f7549cc7ea85..d1f53abb60de 100644
+--- a/sound/soc/codecs/ssm4567.c
++++ b/sound/soc/codecs/ssm4567.c
+@@ -338,6 +338,11 @@ static int ssm4567_set_power(struct ssm4567 *ssm4567, bool enable)
+ regcache_cache_only(ssm4567->regmap, !enable);
+
+ if (enable) {
++ ret = regmap_write(ssm4567->regmap, SSM4567_REG_SOFT_RESET,
++ 0x00);
++ if (ret)
++ return ret;
++
+ ret = regmap_update_bits(ssm4567->regmap,
+ SSM4567_REG_POWER_CTRL,
+ SSM4567_POWER_SPWDN, 0x00);
+diff --git a/sound/soc/samsung/ac97.c b/sound/soc/samsung/ac97.c
+index e4145509d63c..9c5219392460 100644
+--- a/sound/soc/samsung/ac97.c
++++ b/sound/soc/samsung/ac97.c
+@@ -324,7 +324,7 @@ static const struct snd_soc_component_driver s3c_ac97_component = {
+
+ static int s3c_ac97_probe(struct platform_device *pdev)
+ {
+- struct resource *mem_res, *dmatx_res, *dmarx_res, *dmamic_res, *irq_res;
++ struct resource *mem_res, *irq_res;
+ struct s3c_audio_pdata *ac97_pdata;
+ int ret;
+
+@@ -335,24 +335,6 @@ static int s3c_ac97_probe(struct platform_device *pdev)
+ }
+
+ /* Check for availability of necessary resource */
+- dmatx_res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+- if (!dmatx_res) {
+- dev_err(&pdev->dev, "Unable to get AC97-TX dma resource\n");
+- return -ENXIO;
+- }
+-
+- dmarx_res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+- if (!dmarx_res) {
+- dev_err(&pdev->dev, "Unable to get AC97-RX dma resource\n");
+- return -ENXIO;
+- }
+-
+- dmamic_res = platform_get_resource(pdev, IORESOURCE_DMA, 2);
+- if (!dmamic_res) {
+- dev_err(&pdev->dev, "Unable to get AC97-MIC dma resource\n");
+- return -ENXIO;
+- }
+-
+ irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!irq_res) {
+ dev_err(&pdev->dev, "AC97 IRQ not provided!\n");
+@@ -364,11 +346,11 @@ static int s3c_ac97_probe(struct platform_device *pdev)
+ if (IS_ERR(s3c_ac97.regs))
+ return PTR_ERR(s3c_ac97.regs);
+
+- s3c_ac97_pcm_out.channel = dmatx_res->start;
++ s3c_ac97_pcm_out.slave = ac97_pdata->dma_playback;
+ s3c_ac97_pcm_out.dma_addr = mem_res->start + S3C_AC97_PCM_DATA;
+- s3c_ac97_pcm_in.channel = dmarx_res->start;
++ s3c_ac97_pcm_in.slave = ac97_pdata->dma_capture;
+ s3c_ac97_pcm_in.dma_addr = mem_res->start + S3C_AC97_PCM_DATA;
+- s3c_ac97_mic_in.channel = dmamic_res->start;
++ s3c_ac97_mic_in.slave = ac97_pdata->dma_capture_mic;
+ s3c_ac97_mic_in.dma_addr = mem_res->start + S3C_AC97_MIC_DATA;
+
+ init_completion(&s3c_ac97.done);
+diff --git a/sound/soc/samsung/dma.h b/sound/soc/samsung/dma.h
+index 0e85dcfec023..085ef30f5ca2 100644
+--- a/sound/soc/samsung/dma.h
++++ b/sound/soc/samsung/dma.h
+@@ -15,7 +15,7 @@
+ #include <sound/dmaengine_pcm.h>
+
+ struct s3c_dma_params {
+- int channel; /* Channel ID */
++ void *slave; /* Channel ID */
+ dma_addr_t dma_addr;
+ int dma_size; /* Size of the DMA transfer */
+ char *ch_name;
+diff --git a/sound/soc/samsung/dmaengine.c b/sound/soc/samsung/dmaengine.c
+index 506f5bf6d082..727008d57d14 100644
+--- a/sound/soc/samsung/dmaengine.c
++++ b/sound/soc/samsung/dmaengine.c
+@@ -50,14 +50,14 @@ void samsung_asoc_init_dma_data(struct snd_soc_dai *dai,
+
+ if (playback) {
+ playback_data = &playback->dma_data;
+- playback_data->filter_data = (void *)playback->channel;
++ playback_data->filter_data = playback->slave;
+ playback_data->chan_name = playback->ch_name;
+ playback_data->addr = playback->dma_addr;
+ playback_data->addr_width = playback->dma_size;
+ }
+ if (capture) {
+ capture_data = &capture->dma_data;
+- capture_data->filter_data = (void *)capture->channel;
++ capture_data->filter_data = capture->slave;
+ capture_data->chan_name = capture->ch_name;
+ capture_data->addr = capture->dma_addr;
+ capture_data->addr_width = capture->dma_size;
+diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
+index 5e8ccb0a7028..9456c78c9051 100644
+--- a/sound/soc/samsung/i2s.c
++++ b/sound/soc/samsung/i2s.c
+@@ -1260,27 +1260,14 @@ static int samsung_i2s_probe(struct platform_device *pdev)
+ pri_dai->lock = &pri_dai->spinlock;
+
+ if (!np) {
+- res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+- if (!res) {
+- dev_err(&pdev->dev,
+- "Unable to get I2S-TX dma resource\n");
+- return -ENXIO;
+- }
+- pri_dai->dma_playback.channel = res->start;
+-
+- res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+- if (!res) {
+- dev_err(&pdev->dev,
+- "Unable to get I2S-RX dma resource\n");
+- return -ENXIO;
+- }
+- pri_dai->dma_capture.channel = res->start;
+-
+ if (i2s_pdata == NULL) {
+ dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
+ return -EINVAL;
+ }
+
++ pri_dai->dma_playback.slave = i2s_pdata->dma_playback;
++ pri_dai->dma_capture.slave = i2s_pdata->dma_capture;
++
+ if (&i2s_pdata->type)
+ i2s_cfg = &i2s_pdata->type.i2s;
+
+@@ -1341,11 +1328,8 @@ static int samsung_i2s_probe(struct platform_device *pdev)
+ sec_dai->dma_playback.dma_addr = regs_base + I2STXDS;
+ sec_dai->dma_playback.ch_name = "tx-sec";
+
+- if (!np) {
+- res = platform_get_resource(pdev, IORESOURCE_DMA, 2);
+- if (res)
+- sec_dai->dma_playback.channel = res->start;
+- }
++ if (!np)
++ sec_dai->dma_playback.slave = i2s_pdata->dma_play_sec;
+
+ sec_dai->dma_playback.dma_size = 4;
+ sec_dai->addr = pri_dai->addr;
+diff --git a/sound/soc/samsung/pcm.c b/sound/soc/samsung/pcm.c
+index b320a9d3fbf8..c77f324e0bb8 100644
+--- a/sound/soc/samsung/pcm.c
++++ b/sound/soc/samsung/pcm.c
+@@ -486,7 +486,7 @@ static const struct snd_soc_component_driver s3c_pcm_component = {
+ static int s3c_pcm_dev_probe(struct platform_device *pdev)
+ {
+ struct s3c_pcm_info *pcm;
+- struct resource *mem_res, *dmatx_res, *dmarx_res;
++ struct resource *mem_res;
+ struct s3c_audio_pdata *pcm_pdata;
+ int ret;
+
+@@ -499,18 +499,6 @@ static int s3c_pcm_dev_probe(struct platform_device *pdev)
+ pcm_pdata = pdev->dev.platform_data;
+
+ /* Check for availability of necessary resource */
+- dmatx_res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+- if (!dmatx_res) {
+- dev_err(&pdev->dev, "Unable to get PCM-TX dma resource\n");
+- return -ENXIO;
+- }
+-
+- dmarx_res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+- if (!dmarx_res) {
+- dev_err(&pdev->dev, "Unable to get PCM-RX dma resource\n");
+- return -ENXIO;
+- }
+-
+ mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem_res) {
+ dev_err(&pdev->dev, "Unable to get register resource\n");
+@@ -568,8 +556,10 @@ static int s3c_pcm_dev_probe(struct platform_device *pdev)
+ s3c_pcm_stereo_out[pdev->id].dma_addr = mem_res->start
+ + S3C_PCM_TXFIFO;
+
+- s3c_pcm_stereo_in[pdev->id].channel = dmarx_res->start;
+- s3c_pcm_stereo_out[pdev->id].channel = dmatx_res->start;
++ if (pcm_pdata) {
++ s3c_pcm_stereo_in[pdev->id].slave = pcm_pdata->dma_capture;
++ s3c_pcm_stereo_out[pdev->id].slave = pcm_pdata->dma_playback;
++ }
+
+ pcm->dma_capture = &s3c_pcm_stereo_in[pdev->id];
+ pcm->dma_playback = &s3c_pcm_stereo_out[pdev->id];
+diff --git a/sound/soc/samsung/s3c-i2s-v2.c b/sound/soc/samsung/s3c-i2s-v2.c
+index df65c5b494b1..b6ab3fc5789e 100644
+--- a/sound/soc/samsung/s3c-i2s-v2.c
++++ b/sound/soc/samsung/s3c-i2s-v2.c
+@@ -709,7 +709,7 @@ static int s3c2412_i2s_resume(struct snd_soc_dai *dai)
+ #endif
+
+ int s3c_i2sv2_register_component(struct device *dev, int id,
+- struct snd_soc_component_driver *cmp_drv,
++ const struct snd_soc_component_driver *cmp_drv,
+ struct snd_soc_dai_driver *dai_drv)
+ {
+ struct snd_soc_dai_ops *ops = (struct snd_soc_dai_ops *)dai_drv->ops;
+diff --git a/sound/soc/samsung/s3c-i2s-v2.h b/sound/soc/samsung/s3c-i2s-v2.h
+index 90abab364b49..d0684145ed1f 100644
+--- a/sound/soc/samsung/s3c-i2s-v2.h
++++ b/sound/soc/samsung/s3c-i2s-v2.h
+@@ -101,7 +101,7 @@ extern int s3c_i2sv2_probe(struct snd_soc_dai *dai,
+ * soc core.
+ */
+ extern int s3c_i2sv2_register_component(struct device *dev, int id,
+- struct snd_soc_component_driver *cmp_drv,
++ const struct snd_soc_component_driver *cmp_drv,
+ struct snd_soc_dai_driver *dai_drv);
+
+ #endif /* __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H */
+diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c
+index 2b766d212ce0..77d27c85a32a 100644
+--- a/sound/soc/samsung/s3c2412-i2s.c
++++ b/sound/soc/samsung/s3c2412-i2s.c
+@@ -34,13 +34,13 @@
+ #include "s3c2412-i2s.h"
+
+ static struct s3c_dma_params s3c2412_i2s_pcm_stereo_out = {
+- .channel = DMACH_I2S_OUT,
++ .slave = (void *)(uintptr_t)DMACH_I2S_OUT,
+ .ch_name = "tx",
+ .dma_size = 4,
+ };
+
+ static struct s3c_dma_params s3c2412_i2s_pcm_stereo_in = {
+- .channel = DMACH_I2S_IN,
++ .slave = (void *)(uintptr_t)DMACH_I2S_IN,
+ .ch_name = "rx",
+ .dma_size = 4,
+ };
+diff --git a/sound/soc/samsung/s3c24xx-i2s.c b/sound/soc/samsung/s3c24xx-i2s.c
+index 5bf723689692..9da3a77ea2c7 100644
+--- a/sound/soc/samsung/s3c24xx-i2s.c
++++ b/sound/soc/samsung/s3c24xx-i2s.c
+@@ -32,13 +32,13 @@
+ #include "s3c24xx-i2s.h"
+
+ static struct s3c_dma_params s3c24xx_i2s_pcm_stereo_out = {
+- .channel = DMACH_I2S_OUT,
++ .slave = (void *)(uintptr_t)DMACH_I2S_OUT,
+ .ch_name = "tx",
+ .dma_size = 2,
+ };
+
+ static struct s3c_dma_params s3c24xx_i2s_pcm_stereo_in = {
+- .channel = DMACH_I2S_IN,
++ .slave = (void *)(uintptr_t)DMACH_I2S_IN,
+ .ch_name = "rx",
+ .dma_size = 2,
+ };
+diff --git a/sound/soc/samsung/spdif.c b/sound/soc/samsung/spdif.c
+index 36dbc0e96004..9dd7ee6d03ff 100644
+--- a/sound/soc/samsung/spdif.c
++++ b/sound/soc/samsung/spdif.c
+@@ -359,7 +359,7 @@ static const struct snd_soc_component_driver samsung_spdif_component = {
+ static int spdif_probe(struct platform_device *pdev)
+ {
+ struct s3c_audio_pdata *spdif_pdata;
+- struct resource *mem_res, *dma_res;
++ struct resource *mem_res;
+ struct samsung_spdif_info *spdif;
+ int ret;
+
+@@ -367,12 +367,6 @@ static int spdif_probe(struct platform_device *pdev)
+
+ dev_dbg(&pdev->dev, "Entered %s\n", __func__);
+
+- dma_res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+- if (!dma_res) {
+- dev_err(&pdev->dev, "Unable to get dma resource.\n");
+- return -ENXIO;
+- }
+-
+ mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem_res) {
+ dev_err(&pdev->dev, "Unable to get register resource.\n");
+@@ -432,7 +426,7 @@ static int spdif_probe(struct platform_device *pdev)
+
+ spdif_stereo_out.dma_size = 2;
+ spdif_stereo_out.dma_addr = mem_res->start + DATA_OUTBUF;
+- spdif_stereo_out.channel = dma_res->start;
++ spdif_stereo_out.slave = spdif_pdata ? spdif_pdata->dma_playback : NULL;
+
+ spdif->dma_playback = &spdif_stereo_out;
+
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 194fa7f60a38..e27df0d3898b 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -147,6 +147,7 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
+ usb_audio_err(chip, "cannot memdup\n");
+ return -ENOMEM;
+ }
++ INIT_LIST_HEAD(&fp->list);
+ if (fp->nr_rates > MAX_NR_RATES) {
+ kfree(fp);
+ return -EINVAL;
+@@ -164,23 +165,18 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
+ stream = (fp->endpoint & USB_DIR_IN)
+ ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+ err = snd_usb_add_audio_stream(chip, stream, fp);
+- if (err < 0) {
+- kfree(fp);
+- kfree(rate_table);
+- return err;
+- }
++ if (err < 0)
++ goto error;
+ if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
+ fp->altset_idx >= iface->num_altsetting) {
+- kfree(fp);
+- kfree(rate_table);
+- return -EINVAL;
++ err = -EINVAL;
++ goto error;
+ }
+ alts = &iface->altsetting[fp->altset_idx];
+ altsd = get_iface_desc(alts);
+ if (altsd->bNumEndpoints < 1) {
+- kfree(fp);
+- kfree(rate_table);
+- return -EINVAL;
++ err = -EINVAL;
++ goto error;
+ }
+
+ fp->protocol = altsd->bInterfaceProtocol;
+@@ -193,6 +189,12 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
+ snd_usb_init_pitch(chip, fp->iface, alts, fp);
+ snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
+ return 0;
++
++ error:
++ list_del(&fp->list); /* unlink for avoiding double-free */
++ kfree(fp);
++ kfree(rate_table);
++ return err;
+ }
+
+ static int create_auto_pcm_quirk(struct snd_usb_audio *chip,
+@@ -465,6 +467,7 @@ static int create_uaxx_quirk(struct snd_usb_audio *chip,
+ fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
+ fp->datainterval = 0;
+ fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
++ INIT_LIST_HEAD(&fp->list);
+
+ switch (fp->maxpacksize) {
+ case 0x120:
+@@ -488,6 +491,7 @@ static int create_uaxx_quirk(struct snd_usb_audio *chip,
+ ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+ err = snd_usb_add_audio_stream(chip, stream, fp);
+ if (err < 0) {
++ list_del(&fp->list); /* unlink for avoiding double-free */
+ kfree(fp);
+ return err;
+ }
+diff --git a/sound/usb/stream.c b/sound/usb/stream.c
+index 310a3822d2b7..25e8075f9ea3 100644
+--- a/sound/usb/stream.c
++++ b/sound/usb/stream.c
+@@ -315,7 +315,9 @@ static struct snd_pcm_chmap_elem *convert_chmap(int channels, unsigned int bits,
+ /*
+ * add this endpoint to the chip instance.
+ * if a stream with the same endpoint already exists, append to it.
+- * if not, create a new pcm stream.
++ * if not, create a new pcm stream. note, fp is added to the substream
++ * fmt_list and will be freed on the chip instance release. do not free
++ * fp or do remove it from the substream fmt_list to avoid double-free.
+ */
+ int snd_usb_add_audio_stream(struct snd_usb_audio *chip,
+ int stream,
+@@ -668,6 +670,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
+ * (fp->maxpacksize & 0x7ff);
+ fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no);
+ fp->clock = clock;
++ INIT_LIST_HEAD(&fp->list);
+
+ /* some quirks for attributes here */
+
+@@ -716,6 +719,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
+ dev_dbg(&dev->dev, "%u:%d: add audio endpoint %#x\n", iface_no, altno, fp->endpoint);
+ err = snd_usb_add_audio_stream(chip, stream, fp);
+ if (err < 0) {
++ list_del(&fp->list); /* unlink for avoiding double-free */
+ kfree(fp->rate_table);
+ kfree(fp->chmap);
+ kfree(fp);
+diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
+index 04e150d83e7d..756ed9fdc9ad 100644
+--- a/tools/perf/Documentation/perf-stat.txt
++++ b/tools/perf/Documentation/perf-stat.txt
+@@ -62,6 +62,14 @@ OPTIONS
+ --scale::
+ scale/normalize counter values
+
++-d::
++--detailed::
++ print more detailed statistics, can be specified up to 3 times
++
++ -d: detailed events, L1 and LLC data cache
++ -d -d: more detailed events, dTLB and iTLB events
++ -d -d -d: very detailed events, adding prefetch events
++
+ -r::
+ --repeat=<n>::
+ repeat command and print average + stddev (max: 100). 0 means forever.
+diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
+index ff866c4d2e2f..d18a59ab4ed5 100644
+--- a/tools/perf/util/event.c
++++ b/tools/perf/util/event.c
+@@ -251,7 +251,7 @@ int perf_event__synthesize_mmap_events(struct perf_tool *tool,
+ strcpy(execname, "");
+
+ /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
+- n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n",
++ n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %[^\n]\n",
+ &event->mmap2.start, &event->mmap2.len, prot,
+ &event->mmap2.pgoff, &event->mmap2.maj,
+ &event->mmap2.min,
+diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
+index c2f87ff0061d..d93deb5ce4f2 100644
+--- a/virt/kvm/kvm_main.c
++++ b/virt/kvm/kvm_main.c
+@@ -2622,7 +2622,7 @@ static long kvm_vm_ioctl(struct file *filp,
+ if (copy_from_user(&routing, argp, sizeof(routing)))
+ goto out;
+ r = -EINVAL;
+- if (routing.nr >= KVM_MAX_IRQ_ROUTES)
++ if (routing.nr > KVM_MAX_IRQ_ROUTES)
+ goto out;
+ if (routing.flags)
+ goto out;
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-07-02 15:31 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-07-02 15:31 UTC (permalink / raw
To: gentoo-commits
commit: 69af2da49481a0d114da92c3cb339ce48617c9b7
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sat Jul 2 15:31:19 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sat Jul 2 15:31:19 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=69af2da4
Select SYSVIPC when GENTOO_LINUX_PORTAGE is selected. Dependency of IPC_NS. See bug #587736.
4567_distro-Gentoo-Kconfig.patch | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/4567_distro-Gentoo-Kconfig.patch b/4567_distro-Gentoo-Kconfig.patch
index c7af596..499b21f 100644
--- a/4567_distro-Gentoo-Kconfig.patch
+++ b/4567_distro-Gentoo-Kconfig.patch
@@ -1,5 +1,5 @@
---- a/Kconfig
-+++ b/Kconfig
+--- a/Kconfig 2016-07-01 19:22:17.117439707 -0400
++++ b/Kconfig 2016-07-01 19:21:54.371440596 -0400
@@ -8,4 +8,6 @@ config SRCARCH
string
option env="SRCARCH"
@@ -7,9 +7,9 @@
+source "distro/Kconfig"
+
source "arch/$SRCARCH/Kconfig"
---- /dev/null
-+++ b/distro/Kconfig
-@@ -0,0 +1,131 @@
+--- /dev/null 2016-07-01 11:23:26.087932647 -0400
++++ b/distro/Kconfig 2016-07-01 19:32:35.581415519 -0400
+@@ -0,0 +1,134 @@
+menu "Gentoo Linux"
+
+config GENTOO_LINUX
@@ -63,6 +63,7 @@
+ select NAMESPACES
+ select IPC_NS
+ select NET_NS
++ select SYSVIPC
+
+ help
+ This enables options required by various Portage FEATURES.
@@ -71,6 +72,8 @@
+ CGROUPS (required for FEATURES=cgroup)
+ IPC_NS (required for FEATURES=ipc-sandbox)
+ NET_NS (required for FEATURES=network-sandbox)
++ SYSVIPC (required by IPC_NS)
++
+
+ It is highly recommended that you leave this enabled as these FEATURES
+ are, or will soon be, enabled by default.
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-07-01 19:56 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-07-01 19:56 UTC (permalink / raw
To: gentoo-commits
commit: da2e8e644edd67e41f173e6eb9d686d63fc532ed
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Jul 1 19:56:27 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Jul 1 19:56:27 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=da2e8e64
Update gcc 4.9+ optimization patch. Bug #587578
...-additional-cpu-optimizations-for-gcc-4.9.patch | 90 ++++++++++++++--------
1 file changed, 57 insertions(+), 33 deletions(-)
diff --git a/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch b/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
index 418201d..d9729b2 100644
--- a/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
+++ b/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
@@ -21,11 +21,12 @@ bug report to see if I'm right: https://bugzilla.kernel.org/show_bug.cgi?id=7746
This patch will expand the number of microarchitectures to include newer
processors including: AMD K10-family, AMD Family 10h (Barcelona), AMD Family
14h (Bobcat), AMD Family 15h (Bulldozer), AMD Family 15h (Piledriver), AMD
-Family 16h (Jaguar), Intel 1st Gen Core i3/i5/i7 (Nehalem), Intel 1.5 Gen Core
-i3/i5/i7 (Westmere), Intel 2nd Gen Core i3/i5/i7 (Sandybridge), Intel 3rd Gen
-Core i3/i5/i7 (Ivybridge), Intel 4th Gen Core i3/i5/i7 (Haswell), Intel 5th
-Gen Core i3/i5/i7 (Broadwell), and the low power Silvermont series of Atom
-processors (Silvermont). It also offers the compiler the 'native' flag.
+Family 15h (Steamroller), Family 16h (Jaguar), Intel 1st Gen Core i3/i5/i7
+(Nehalem), Intel 1.5 Gen Core i3/i5/i7 (Westmere), Intel 2nd Gen Core i3/i5/i7
+(Sandybridge), Intel 3rd Gen Core i3/i5/i7 (Ivybridge), Intel 4th Gen Core
+i3/i5/i7 (Haswell), Intel 5th Gen Core i3/i5/i7 (Broadwell), and the low power
+Silvermont series of Atom processors (Silvermont). It also offers the compiler
+the 'native' flag.
Small but real speed increases are measurable using a make endpoint comparing
a generic kernel to one built with one of the respective microarchs.
@@ -37,9 +38,9 @@ REQUIREMENTS
linux version >=3.15
gcc version >=4.9
---- a/arch/x86/include/asm/module.h 2014-06-16 16:44:27.000000000 -0400
-+++ b/arch/x86/include/asm/module.h 2015-03-07 03:27:32.556672424 -0500
-@@ -15,6 +15,22 @@
+--- a/arch/x86/include/asm/module.h 2015-08-30 14:34:09.000000000 -0400
++++ b/arch/x86/include/asm/module.h 2015-11-06 14:18:24.234941036 -0500
+@@ -15,6 +15,24 @@
#define MODULE_PROC_FAMILY "586MMX "
#elif defined CONFIG_MCORE2
#define MODULE_PROC_FAMILY "CORE2 "
@@ -59,10 +60,12 @@ gcc version >=4.9
+#define MODULE_PROC_FAMILY "HASWELL "
+#elif defined CONFIG_MBROADWELL
+#define MODULE_PROC_FAMILY "BROADWELL "
++#elif defined CONFIG_MSKYLAKE
++#define MODULE_PROC_FAMILY "SKYLAKE "
#elif defined CONFIG_MATOM
#define MODULE_PROC_FAMILY "ATOM "
#elif defined CONFIG_M686
-@@ -33,6 +49,20 @@
+@@ -33,6 +51,22 @@
#define MODULE_PROC_FAMILY "K7 "
#elif defined CONFIG_MK8
#define MODULE_PROC_FAMILY "K8 "
@@ -77,14 +80,16 @@ gcc version >=4.9
+#elif defined CONFIG_MBULLDOZER
+#define MODULE_PROC_FAMILY "BULLDOZER "
+#elif defined CONFIG_MPILEDRIVER
++#define MODULE_PROC_FAMILY "STEAMROLLER "
++#elif defined CONFIG_MSTEAMROLLER
+#define MODULE_PROC_FAMILY "PILEDRIVER "
+#elif defined CONFIG_MJAGUAR
+#define MODULE_PROC_FAMILY "JAGUAR "
#elif defined CONFIG_MELAN
#define MODULE_PROC_FAMILY "ELAN "
#elif defined CONFIG_MCRUSOE
---- a/arch/x86/Kconfig.cpu 2014-06-16 16:44:27.000000000 -0400
-+++ b/arch/x86/Kconfig.cpu 2015-03-07 03:32:14.337713226 -0500
+--- a/arch/x86/Kconfig.cpu 2015-08-30 14:34:09.000000000 -0400
++++ b/arch/x86/Kconfig.cpu 2015-11-06 14:20:14.948369244 -0500
@@ -137,9 +137,8 @@ config MPENTIUM4
-Paxville
-Dempsey
@@ -105,7 +110,7 @@ gcc version >=4.9
depends on X86_32
---help---
Select this for an AMD Athlon K7-family processor. Enables use of
-@@ -155,12 +154,62 @@ config MK7
+@@ -155,12 +154,69 @@ config MK7
flags to GCC.
config MK8
@@ -159,6 +164,13 @@ gcc version >=4.9
+
+ Enables -march=bdver2
+
++config MSTEAMROLLER
++ bool "AMD Steamroller"
++ ---help---
++ Select this for AMD Steamroller processors.
++
++ Enables -march=bdver3
++
+config MJAGUAR
+ bool "AMD Jaguar"
+ ---help---
@@ -169,7 +181,7 @@ gcc version >=4.9
config MCRUSOE
bool "Crusoe"
depends on X86_32
-@@ -251,8 +300,17 @@ config MPSC
+@@ -251,8 +307,17 @@ config MPSC
using the cpu family field
in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.
@@ -188,7 +200,7 @@ gcc version >=4.9
---help---
Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
-@@ -260,14 +318,63 @@ config MCORE2
+@@ -260,14 +325,71 @@ config MCORE2
family in /proc/cpuinfo. Newer ones have 6 and older ones 15
(not a typo)
@@ -255,10 +267,18 @@ gcc version >=4.9
+ Select this for 5th Gen Core processors in the Broadwell family.
+
+ Enables -march=broadwell
++
++config MSKYLAKE
++ bool "Intel Skylake"
++ ---help---
++
++ Select this for 6th Gen Core processors in the Skylake family.
++
++ Enables -march=skylake
config GENERIC_CPU
bool "Generic-x86-64"
-@@ -276,6 +383,19 @@ config GENERIC_CPU
+@@ -276,6 +398,19 @@ config GENERIC_CPU
Generic x86-64 CPU.
Run equally well on all x86-64 CPUs.
@@ -278,54 +298,54 @@ gcc version >=4.9
endchoice
config X86_GENERIC
-@@ -300,7 +420,7 @@ config X86_INTERNODE_CACHE_SHIFT
+@@ -300,7 +435,7 @@ config X86_INTERNODE_CACHE_SHIFT
config X86_L1_CACHE_SHIFT
int
default "7" if MPENTIUM4 || MPSC
- default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
-+ default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
++ default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
default "4" if MELAN || M486 || MGEODEGX1
default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
-@@ -331,11 +451,11 @@ config X86_ALIGNMENT_16
+@@ -331,11 +466,11 @@ config X86_ALIGNMENT_16
config X86_INTEL_USERCOPY
def_bool y
- depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2
-+ depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK8SSE3 || MK7 || MEFFICEON || MCORE2 || MK10 || MBARCELONA || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MNATIVE
++ depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK8SSE3 || MK7 || MEFFICEON || MCORE2 || MK10 || MBARCELONA || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MNATIVE
config X86_USE_PPRO_CHECKSUM
def_bool y
- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM
-+ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MK10 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MATOM || MNATIVE
++ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MK10 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MATOM || MNATIVE
config X86_USE_3DNOW
def_bool y
-@@ -359,17 +479,17 @@ config X86_P6_NOP
+@@ -359,17 +494,17 @@ config X86_P6_NOP
config X86_TSC
def_bool y
- depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) || X86_64
-+ depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MNATIVE || MATOM) || X86_64
++ depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MNATIVE || MATOM) || X86_64
config X86_CMPXCHG64
def_bool y
- depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM
-+ depends on X86_PAE || X86_64 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM || MNATIVE
++ depends on X86_PAE || X86_64 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM || MNATIVE
# this should be set for all -march=.. options where the compiler
# generates cmov.
config X86_CMOV
def_bool y
- depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
-+ depends on (MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MK7 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MNATIVE || MATOM || MGEODE_LX)
++ depends on (MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MJAGUAR || MK7 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MNATIVE || MATOM || MGEODE_LX)
config X86_MINIMUM_CPU_FAMILY
int
---- a/arch/x86/Makefile 2014-06-16 16:44:27.000000000 -0400
-+++ b/arch/x86/Makefile 2015-03-07 03:33:27.650843211 -0500
-@@ -92,13 +92,35 @@ else
- KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=3)
+--- a/arch/x86/Makefile 2015-08-30 14:34:09.000000000 -0400
++++ b/arch/x86/Makefile 2015-11-06 14:21:05.708983344 -0500
+@@ -94,13 +94,38 @@ else
+ KBUILD_CFLAGS += $(call cc-option,-mskip-rax-setup)
# FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
+ cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native)
@@ -336,6 +356,7 @@ gcc version >=4.9
+ cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1)
+ cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1)
+ cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2)
++ cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3)
+ cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2)
cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
@@ -358,14 +379,16 @@ gcc version >=4.9
+ $(call cc-option,-march=haswell,$(call cc-option,-mtune=haswell))
+ cflags-$(CONFIG_MBROADWELL) += \
+ $(call cc-option,-march=broadwell,$(call cc-option,-mtune=broadwell))
++ cflags-$(CONFIG_MSKYLAKE) += \
++ $(call cc-option,-march=skylake,$(call cc-option,-mtune=skylake))
+ cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell) \
+ $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic))
cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
KBUILD_CFLAGS += $(cflags-y)
---- a/arch/x86/Makefile_32.cpu 2014-06-16 16:44:27.000000000 -0400
-+++ b/arch/x86/Makefile_32.cpu 2015-03-07 03:34:15.203586024 -0500
-@@ -23,7 +23,15 @@ cflags-$(CONFIG_MK6) += -march=k6
+--- a/arch/x86/Makefile_32.cpu 2015-08-30 14:34:09.000000000 -0400
++++ b/arch/x86/Makefile_32.cpu 2015-11-06 14:21:43.604429077 -0500
+@@ -23,7 +23,16 @@ cflags-$(CONFIG_MK6) += -march=k6
# Please note, that patches that add -march=athlon-xp and friends are pointless.
# They make zero difference whatsosever to performance at this time.
cflags-$(CONFIG_MK7) += -march=athlon
@@ -377,11 +400,12 @@ gcc version >=4.9
+cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1,-march=athlon)
+cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1,-march=athlon)
+cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2,-march=athlon)
++cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3,-march=athlon)
+cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2,-march=athlon)
cflags-$(CONFIG_MCRUSOE) += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586)
-@@ -32,8 +40,15 @@ cflags-$(CONFIG_MCYRIXIII) += $(call cc-
+@@ -32,8 +41,16 @@ cflags-$(CONFIG_MCYRIXIII) += $(call cc-
cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686)
cflags-$(CONFIG_MVIAC7) += -march=i686
cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2)
@@ -394,9 +418,9 @@ gcc version >=4.9
+cflags-$(CONFIG_MIVYBRIDGE) += -march=i686 $(call tune,ivybridge)
+cflags-$(CONFIG_MHASWELL) += -march=i686 $(call tune,haswell)
+cflags-$(CONFIG_MBROADWELL) += -march=i686 $(call tune,broadwell)
++cflags-$(CONFIG_MSKYLAKE) += -march=i686 $(call tune,skylake)
+cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell,$(call cc-option,-march=core2,-march=i686)) \
+ $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic))
# AMD Elan support
cflags-$(CONFIG_MELAN) += -march=i486
-
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-06-23 11:45 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-06-23 11:45 UTC (permalink / raw
To: gentoo-commits
commit: 9b1ae75ce3b7546ecbaf6b6a880ea885166190cb
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Jun 23 11:45:51 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Jun 23 11:45:51 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=9b1ae75c
Linux patch 4.1.27
0000_README | 4 +
1026_linux-4.1.27.patch | 1129 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1133 insertions(+)
diff --git a/0000_README b/0000_README
index 783092f..b592a97 100644
--- a/0000_README
+++ b/0000_README
@@ -147,6 +147,10 @@ Patch: 1025_linux-4.1.26.patch
From: http://www.kernel.org
Desc: Linux 4.1.26
+Patch: 1026_linux-4.1.27.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.27
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1026_linux-4.1.27.patch b/1026_linux-4.1.27.patch
new file mode 100644
index 0000000..bd3e683
--- /dev/null
+++ b/1026_linux-4.1.27.patch
@@ -0,0 +1,1129 @@
+diff --git a/Makefile b/Makefile
+index 080a87e290b9..54b3d8ae8624 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 26
++SUBLEVEL = 27
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
+index ef9119f7462e..4d9375814b53 100644
+--- a/arch/arm/kernel/ptrace.c
++++ b/arch/arm/kernel/ptrace.c
+@@ -733,8 +733,8 @@ static int vfp_set(struct task_struct *target,
+ if (ret)
+ return ret;
+
+- vfp_flush_hwstate(thread);
+ thread->vfpstate.hard = new_vfp;
++ vfp_flush_hwstate(thread);
+
+ return 0;
+ }
+diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
+index d7c0acb35ec2..8d49614d600d 100644
+--- a/arch/parisc/kernel/unaligned.c
++++ b/arch/parisc/kernel/unaligned.c
+@@ -666,7 +666,7 @@ void handle_unaligned(struct pt_regs *regs)
+ break;
+ }
+
+- if (modify && R1(regs->iir))
++ if (ret == 0 && modify && R1(regs->iir))
+ regs->gr[R1(regs->iir)] = newbase;
+
+
+@@ -677,6 +677,14 @@ void handle_unaligned(struct pt_regs *regs)
+
+ if (ret)
+ {
++ /*
++ * The unaligned handler failed.
++ * If we were called by __get_user() or __put_user() jump
++ * to it's exception fixup handler instead of crashing.
++ */
++ if (!user_mode(regs) && fixup_exception(regs))
++ return;
++
+ printk(KERN_CRIT "Unaligned handler failed, ret = %d\n", ret);
+ die_if_kernel("Unaligned data reference", regs, 28);
+
+diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
+index f4f99f01b746..a4bf6e0eb813 100644
+--- a/arch/powerpc/include/asm/reg.h
++++ b/arch/powerpc/include/asm/reg.h
+@@ -708,7 +708,7 @@
+ #define MMCR0_FCWAIT 0x00000002UL /* freeze counter in WAIT state */
+ #define MMCR0_FCHV 0x00000001UL /* freeze conditions in hypervisor mode */
+ #define SPRN_MMCR1 798
+-#define SPRN_MMCR2 769
++#define SPRN_MMCR2 785
+ #define SPRN_MMCRA 0x312
+ #define MMCRA_SDSYNC 0x80000000UL /* SDAR synced with SIAR */
+ #define MMCRA_SDAR_DCACHE_MISS 0x40000000UL
+@@ -745,13 +745,13 @@
+ #define SPRN_PMC6 792
+ #define SPRN_PMC7 793
+ #define SPRN_PMC8 794
+-#define SPRN_SIAR 780
+-#define SPRN_SDAR 781
+ #define SPRN_SIER 784
+ #define SIER_SIPR 0x2000000 /* Sampled MSR_PR */
+ #define SIER_SIHV 0x1000000 /* Sampled MSR_HV */
+ #define SIER_SIAR_VALID 0x0400000 /* SIAR contents valid */
+ #define SIER_SDAR_VALID 0x0200000 /* SDAR contents valid */
++#define SPRN_SIAR 796
++#define SPRN_SDAR 797
+ #define SPRN_TACR 888
+ #define SPRN_TCSCR 889
+ #define SPRN_CSIGR 890
+diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
+index fd1fe4c37599..ae97ba211d8e 100644
+--- a/arch/powerpc/kernel/prom_init.c
++++ b/arch/powerpc/kernel/prom_init.c
+@@ -647,6 +647,7 @@ unsigned char ibm_architecture_vec[] = {
+ W(0xffff0000), W(0x003e0000), /* POWER6 */
+ W(0xffff0000), W(0x003f0000), /* POWER7 */
+ W(0xffff0000), W(0x004b0000), /* POWER8E */
++ W(0xffff0000), W(0x004c0000), /* POWER8NVL */
+ W(0xffff0000), W(0x004d0000), /* POWER8 */
+ W(0xffffffff), W(0x0f000004), /* all 2.07-compliant */
+ W(0xffffffff), W(0x0f000003), /* all 2.06-compliant */
+@@ -709,7 +710,7 @@ unsigned char ibm_architecture_vec[] = {
+ * must match by the macro below. Update the definition if
+ * the structure layout changes.
+ */
+-#define IBM_ARCH_VEC_NRCORES_OFFSET 125
++#define IBM_ARCH_VEC_NRCORES_OFFSET 133
+ W(NR_CPUS), /* number of cores supported */
+ 0,
+ 0,
+diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c
+index 2039397cc75d..d2a44cd476f2 100644
+--- a/arch/powerpc/platforms/pseries/eeh_pseries.c
++++ b/arch/powerpc/platforms/pseries/eeh_pseries.c
+@@ -623,29 +623,50 @@ static int pseries_eeh_configure_bridge(struct eeh_pe *pe)
+ {
+ int config_addr;
+ int ret;
++ /* Waiting 0.2s maximum before skipping configuration */
++ int max_wait = 200;
+
+ /* Figure out the PE address */
+ config_addr = pe->config_addr;
+ if (pe->addr)
+ config_addr = pe->addr;
+
+- /* Use new configure-pe function, if supported */
+- if (ibm_configure_pe != RTAS_UNKNOWN_SERVICE) {
+- ret = rtas_call(ibm_configure_pe, 3, 1, NULL,
+- config_addr, BUID_HI(pe->phb->buid),
+- BUID_LO(pe->phb->buid));
+- } else if (ibm_configure_bridge != RTAS_UNKNOWN_SERVICE) {
+- ret = rtas_call(ibm_configure_bridge, 3, 1, NULL,
+- config_addr, BUID_HI(pe->phb->buid),
+- BUID_LO(pe->phb->buid));
+- } else {
+- return -EFAULT;
+- }
++ while (max_wait > 0) {
++ /* Use new configure-pe function, if supported */
++ if (ibm_configure_pe != RTAS_UNKNOWN_SERVICE) {
++ ret = rtas_call(ibm_configure_pe, 3, 1, NULL,
++ config_addr, BUID_HI(pe->phb->buid),
++ BUID_LO(pe->phb->buid));
++ } else if (ibm_configure_bridge != RTAS_UNKNOWN_SERVICE) {
++ ret = rtas_call(ibm_configure_bridge, 3, 1, NULL,
++ config_addr, BUID_HI(pe->phb->buid),
++ BUID_LO(pe->phb->buid));
++ } else {
++ return -EFAULT;
++ }
+
+- if (ret)
+- pr_warn("%s: Unable to configure bridge PHB#%d-PE#%x (%d)\n",
+- __func__, pe->phb->global_number, pe->addr, ret);
++ if (!ret)
++ return ret;
++
++ /*
++ * If RTAS returns a delay value that's above 100ms, cut it
++ * down to 100ms in case firmware made a mistake. For more
++ * on how these delay values work see rtas_busy_delay_time
++ */
++ if (ret > RTAS_EXTENDED_DELAY_MIN+2 &&
++ ret <= RTAS_EXTENDED_DELAY_MAX)
++ ret = RTAS_EXTENDED_DELAY_MIN+2;
++
++ max_wait -= rtas_busy_delay_time(ret);
++
++ if (max_wait < 0)
++ break;
++
++ rtas_busy_delay(ret);
++ }
+
++ pr_warn("%s: Unable to configure bridge PHB#%d-PE#%x (%d)\n",
++ __func__, pe->phb->global_number, pe->addr, ret);
+ return ret;
+ }
+
+diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
+index 57bbf2fb21f6..78c366462e70 100644
+--- a/arch/x86/boot/Makefile
++++ b/arch/x86/boot/Makefile
+@@ -162,6 +162,9 @@ isoimage: $(obj)/bzImage
+ for i in lib lib64 share end ; do \
+ if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
+ cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
++ if [ -f /usr/$$i/syslinux/ldlinux.c32 ]; then \
++ cp /usr/$$i/syslinux/ldlinux.c32 $(obj)/isoimage ; \
++ fi ; \
+ break ; \
+ fi ; \
+ if [ $$i = end ] ; then exit 1 ; fi ; \
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 75eb9603ed29..bd84d2226ca1 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -3174,6 +3174,11 @@ static int kvm_vcpu_ioctl_x86_set_debugregs(struct kvm_vcpu *vcpu,
+ if (dbgregs->flags)
+ return -EINVAL;
+
++ if (dbgregs->dr6 & ~0xffffffffull)
++ return -EINVAL;
++ if (dbgregs->dr7 & ~0xffffffffull)
++ return -EINVAL;
++
+ memcpy(vcpu->arch.db, dbgregs->db, sizeof(vcpu->arch.db));
+ kvm_update_dr0123(vcpu);
+ vcpu->arch.dr6 = dbgregs->dr6;
+diff --git a/crypto/asymmetric_keys/Kconfig b/crypto/asymmetric_keys/Kconfig
+index 4870f28403f5..05bfe568cd30 100644
+--- a/crypto/asymmetric_keys/Kconfig
++++ b/crypto/asymmetric_keys/Kconfig
+@@ -14,6 +14,7 @@ config ASYMMETRIC_PUBLIC_KEY_SUBTYPE
+ select MPILIB
+ select PUBLIC_KEY_ALGO_RSA
+ select CRYPTO_HASH_INFO
++ select CRYPTO_AKCIPHER
+ help
+ This option provides support for asymmetric public key type handling.
+ If signature generation and/or verification are to be used,
+diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
+index 1ee2ab58e37d..e6eed20b1401 100644
+--- a/drivers/cpufreq/intel_pstate.c
++++ b/drivers/cpufreq/intel_pstate.c
+@@ -1037,8 +1037,11 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
+
+ /* cpuinfo and default policy values */
+ policy->cpuinfo.min_freq = cpu->pstate.min_pstate * cpu->pstate.scaling;
+- policy->cpuinfo.max_freq =
+- cpu->pstate.turbo_pstate * cpu->pstate.scaling;
++ update_turbo_state();
++ policy->cpuinfo.max_freq = limits.turbo_disabled ?
++ cpu->pstate.max_pstate : cpu->pstate.turbo_pstate;
++ policy->cpuinfo.max_freq *= cpu->pstate.scaling;
++
+ policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+ cpumask_set_cpu(policy->cpu, policy->cpus);
+
+diff --git a/drivers/crypto/ccp/ccp-crypto-aes-xts.c b/drivers/crypto/ccp/ccp-crypto-aes-xts.c
+index 52c7395cb8d8..0d0d4529ee36 100644
+--- a/drivers/crypto/ccp/ccp-crypto-aes-xts.c
++++ b/drivers/crypto/ccp/ccp-crypto-aes-xts.c
+@@ -122,6 +122,7 @@ static int ccp_aes_xts_crypt(struct ablkcipher_request *req,
+ struct ccp_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct ccp_aes_req_ctx *rctx = ablkcipher_request_ctx(req);
+ unsigned int unit;
++ u32 unit_size;
+ int ret;
+
+ if (!ctx->u.aes.key_len)
+@@ -133,11 +134,17 @@ static int ccp_aes_xts_crypt(struct ablkcipher_request *req,
+ if (!req->info)
+ return -EINVAL;
+
+- for (unit = 0; unit < ARRAY_SIZE(unit_size_map); unit++)
+- if (!(req->nbytes & (unit_size_map[unit].size - 1)))
+- break;
++ unit_size = CCP_XTS_AES_UNIT_SIZE__LAST;
++ if (req->nbytes <= unit_size_map[0].size) {
++ for (unit = 0; unit < ARRAY_SIZE(unit_size_map); unit++) {
++ if (!(req->nbytes & (unit_size_map[unit].size - 1))) {
++ unit_size = unit_size_map[unit].value;
++ break;
++ }
++ }
++ }
+
+- if ((unit_size_map[unit].value == CCP_XTS_AES_UNIT_SIZE__LAST) ||
++ if ((unit_size == CCP_XTS_AES_UNIT_SIZE__LAST) ||
+ (ctx->u.aes.key_len != AES_KEYSIZE_128)) {
+ /* Use the fallback to process the request for any
+ * unsupported unit sizes or key sizes
+@@ -158,7 +165,7 @@ static int ccp_aes_xts_crypt(struct ablkcipher_request *req,
+ rctx->cmd.engine = CCP_ENGINE_XTS_AES_128;
+ rctx->cmd.u.xts.action = (encrypt) ? CCP_AES_ACTION_ENCRYPT
+ : CCP_AES_ACTION_DECRYPT;
+- rctx->cmd.u.xts.unit_size = unit_size_map[unit].value;
++ rctx->cmd.u.xts.unit_size = unit_size;
+ rctx->cmd.u.xts.key = &ctx->u.aes.key_sg;
+ rctx->cmd.u.xts.key_len = ctx->u.aes.key_len;
+ rctx->cmd.u.xts.iv = &rctx->iv_sg;
+diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
+index a7e7be0a8ae8..cb46c468b01e 100644
+--- a/drivers/edac/sb_edac.c
++++ b/drivers/edac/sb_edac.c
+@@ -218,8 +218,11 @@ static const u32 rir_offset[MAX_RIR_RANGES][MAX_RIR_WAY] = {
+ { 0x1a0, 0x1a4, 0x1a8, 0x1ac, 0x1b0, 0x1b4, 0x1b8, 0x1bc },
+ };
+
+-#define RIR_RNK_TGT(reg) GET_BITFIELD(reg, 16, 19)
+-#define RIR_OFFSET(reg) GET_BITFIELD(reg, 2, 14)
++#define RIR_RNK_TGT(type, reg) (((type) == BROADWELL) ? \
++ GET_BITFIELD(reg, 20, 23) : GET_BITFIELD(reg, 16, 19))
++
++#define RIR_OFFSET(type, reg) (((type) == HASWELL || (type) == BROADWELL) ? \
++ GET_BITFIELD(reg, 2, 15) : GET_BITFIELD(reg, 2, 14))
+
+ /* Device 16, functions 2-7 */
+
+@@ -1101,14 +1104,14 @@ static void get_memory_layout(const struct mem_ctl_info *mci)
+ pci_read_config_dword(pvt->pci_tad[i],
+ rir_offset[j][k],
+ ®);
+- tmp_mb = RIR_OFFSET(reg) << 6;
++ tmp_mb = RIR_OFFSET(pvt->info.type, reg) << 6;
+
+ gb = div_u64_rem(tmp_mb, 1024, &mb);
+ edac_dbg(0, "CH#%d RIR#%d INTL#%d, offset %u.%03u GB (0x%016Lx), tgt: %d, reg=0x%08x\n",
+ i, j, k,
+ gb, (mb*1000)/1024,
+ ((u64)tmp_mb) << 20L,
+- (u32)RIR_RNK_TGT(reg),
++ (u32)RIR_RNK_TGT(pvt->info.type, reg),
+ reg);
+ }
+ }
+@@ -1432,7 +1435,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
+ pci_read_config_dword(pvt->pci_tad[base_ch],
+ rir_offset[n_rir][idx],
+ ®);
+- *rank = RIR_RNK_TGT(reg);
++ *rank = RIR_RNK_TGT(pvt->info.type, reg);
+
+ edac_dbg(0, "RIR#%d: channel address 0x%08Lx < 0x%08Lx, RIR interleave %d, index %d\n",
+ n_rir,
+diff --git a/drivers/gpio/gpio-bcm-kona.c b/drivers/gpio/gpio-bcm-kona.c
+index b164ce837b43..81ddd1d6d84b 100644
+--- a/drivers/gpio/gpio-bcm-kona.c
++++ b/drivers/gpio/gpio-bcm-kona.c
+@@ -549,11 +549,11 @@ static void bcm_kona_gpio_reset(struct bcm_kona_gpio *kona_gpio)
+ /* disable interrupts and clear status */
+ for (i = 0; i < kona_gpio->num_bank; i++) {
+ /* Unlock the entire bank first */
+- bcm_kona_gpio_write_lock_regs(kona_gpio, i, UNLOCK_CODE);
++ bcm_kona_gpio_write_lock_regs(reg_base, i, UNLOCK_CODE);
+ writel(0xffffffff, reg_base + GPIO_INT_MASK(i));
+ writel(0xffffffff, reg_base + GPIO_INT_STATUS(i));
+ /* Now re-lock the bank */
+- bcm_kona_gpio_write_lock_regs(kona_gpio, i, LOCK_CODE);
++ bcm_kona_gpio_write_lock_regs(reg_base, i, LOCK_CODE);
+ }
+ }
+
+diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
+index 6bc612b8a49f..95752d38b7fe 100644
+--- a/drivers/gpio/gpiolib.c
++++ b/drivers/gpio/gpiolib.c
+@@ -375,7 +375,7 @@ struct gpio_chip *gpiochip_find(void *data,
+
+ spin_lock_irqsave(&gpio_lock, flags);
+ list_for_each_entry(chip, &gpio_chips, list)
+- if (match(chip, data))
++ if (chip && match(chip, data))
+ break;
+
+ /* No match? */
+diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+index 567791b27d6d..cf43f77be254 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+@@ -572,6 +572,7 @@ nouveau_fbcon_init(struct drm_device *dev)
+ if (ret)
+ goto fini;
+
++ fbcon->helper.fbdev->pixmap.buf_align = 4;
+ return 0;
+
+ fini:
+diff --git a/drivers/gpu/drm/nouveau/nv04_fbcon.c b/drivers/gpu/drm/nouveau/nv04_fbcon.c
+index 495c57644ced..7a92d15d474e 100644
+--- a/drivers/gpu/drm/nouveau/nv04_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nv04_fbcon.c
+@@ -82,7 +82,6 @@ nv04_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ uint32_t fg;
+ uint32_t bg;
+ uint32_t dsize;
+- uint32_t width;
+ uint32_t *data = (uint32_t *)image->data;
+ int ret;
+
+@@ -93,9 +92,6 @@ nv04_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ if (ret)
+ return ret;
+
+- width = ALIGN(image->width, 8);
+- dsize = ALIGN(width * image->height, 32) >> 5;
+-
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+ info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+ fg = ((uint32_t *) info->pseudo_palette)[image->fg_color];
+@@ -111,10 +107,11 @@ nv04_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ ((image->dx + image->width) & 0xffff));
+ OUT_RING(chan, bg);
+ OUT_RING(chan, fg);
+- OUT_RING(chan, (image->height << 16) | width);
++ OUT_RING(chan, (image->height << 16) | image->width);
+ OUT_RING(chan, (image->height << 16) | image->width);
+ OUT_RING(chan, (image->dy << 16) | (image->dx & 0xffff));
+
++ dsize = ALIGN(image->width * image->height, 32) >> 5;
+ while (dsize) {
+ int iter_len = dsize > 128 ? 128 : dsize;
+
+diff --git a/drivers/gpu/drm/nouveau/nv50_fbcon.c b/drivers/gpu/drm/nouveau/nv50_fbcon.c
+index 394c89abcc97..cb2a71ada99e 100644
+--- a/drivers/gpu/drm/nouveau/nv50_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nv50_fbcon.c
+@@ -95,7 +95,7 @@ nv50_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ struct nouveau_fbdev *nfbdev = info->par;
+ struct nouveau_drm *drm = nouveau_drm(nfbdev->dev);
+ struct nouveau_channel *chan = drm->channel;
+- uint32_t width, dwords, *data = (uint32_t *)image->data;
++ uint32_t dwords, *data = (uint32_t *)image->data;
+ uint32_t mask = ~(~0 >> (32 - info->var.bits_per_pixel));
+ uint32_t *palette = info->pseudo_palette;
+ int ret;
+@@ -107,9 +107,6 @@ nv50_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ if (ret)
+ return ret;
+
+- width = ALIGN(image->width, 32);
+- dwords = (width * image->height) >> 5;
+-
+ BEGIN_NV04(chan, NvSub2D, 0x0814, 2);
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+ info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+@@ -128,6 +125,7 @@ nv50_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ OUT_RING(chan, 0);
+ OUT_RING(chan, image->dy);
+
++ dwords = ALIGN(image->width * image->height, 32) >> 5;
+ while (dwords) {
+ int push = dwords > 2047 ? 2047 : dwords;
+
+diff --git a/drivers/gpu/drm/nouveau/nvc0_fbcon.c b/drivers/gpu/drm/nouveau/nvc0_fbcon.c
+index 61246677e8dc..69f760e8c54f 100644
+--- a/drivers/gpu/drm/nouveau/nvc0_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nvc0_fbcon.c
+@@ -95,7 +95,7 @@ nvc0_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ struct nouveau_fbdev *nfbdev = info->par;
+ struct nouveau_drm *drm = nouveau_drm(nfbdev->dev);
+ struct nouveau_channel *chan = drm->channel;
+- uint32_t width, dwords, *data = (uint32_t *)image->data;
++ uint32_t dwords, *data = (uint32_t *)image->data;
+ uint32_t mask = ~(~0 >> (32 - info->var.bits_per_pixel));
+ uint32_t *palette = info->pseudo_palette;
+ int ret;
+@@ -107,9 +107,6 @@ nvc0_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ if (ret)
+ return ret;
+
+- width = ALIGN(image->width, 32);
+- dwords = (width * image->height) >> 5;
+-
+ BEGIN_NVC0(chan, NvSub2D, 0x0814, 2);
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+ info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+@@ -128,6 +125,7 @@ nvc0_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
+ OUT_RING (chan, 0);
+ OUT_RING (chan, image->dy);
+
++ dwords = ALIGN(image->width * image->height, 32) >> 5;
+ while (dwords) {
+ int push = dwords > 2047 ? 2047 : dwords;
+
+diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+index 5606c25e5d02..6d9fea664c6a 100644
+--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
++++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+@@ -796,21 +796,41 @@ gf100_gr_trap_gpc_rop(struct gf100_gr_priv *priv, int gpc)
+ }
+
+ static const struct nvkm_enum gf100_mp_warp_error[] = {
+- { 0x00, "NO_ERROR" },
+- { 0x01, "STACK_MISMATCH" },
++ { 0x01, "STACK_ERROR" },
++ { 0x02, "API_STACK_ERROR" },
++ { 0x03, "RET_EMPTY_STACK_ERROR" },
++ { 0x04, "PC_WRAP" },
+ { 0x05, "MISALIGNED_PC" },
+- { 0x08, "MISALIGNED_GPR" },
+- { 0x09, "INVALID_OPCODE" },
+- { 0x0d, "GPR_OUT_OF_BOUNDS" },
+- { 0x0e, "MEM_OUT_OF_BOUNDS" },
+- { 0x0f, "UNALIGNED_MEM_ACCESS" },
+- { 0x11, "INVALID_PARAM" },
++ { 0x06, "PC_OVERFLOW" },
++ { 0x07, "MISALIGNED_IMMC_ADDR" },
++ { 0x08, "MISALIGNED_REG" },
++ { 0x09, "ILLEGAL_INSTR_ENCODING" },
++ { 0x0a, "ILLEGAL_SPH_INSTR_COMBO" },
++ { 0x0b, "ILLEGAL_INSTR_PARAM" },
++ { 0x0c, "INVALID_CONST_ADDR" },
++ { 0x0d, "OOR_REG" },
++ { 0x0e, "OOR_ADDR" },
++ { 0x0f, "MISALIGNED_ADDR" },
++ { 0x10, "INVALID_ADDR_SPACE" },
++ { 0x11, "ILLEGAL_INSTR_PARAM2" },
++ { 0x12, "INVALID_CONST_ADDR_LDC" },
++ { 0x13, "GEOMETRY_SM_ERROR" },
++ { 0x14, "DIVERGENT" },
++ { 0x15, "WARP_EXIT" },
+ {}
+ };
+
+ static const struct nvkm_bitfield gf100_mp_global_error[] = {
++ { 0x00000001, "SM_TO_SM_FAULT" },
++ { 0x00000002, "L1_ERROR" },
+ { 0x00000004, "MULTIPLE_WARP_ERRORS" },
+- { 0x00000008, "OUT_OF_STACK_SPACE" },
++ { 0x00000008, "PHYSICAL_STACK_OVERFLOW" },
++ { 0x00000010, "BPT_INT" },
++ { 0x00000020, "BPT_PAUSE" },
++ { 0x00000040, "SINGLE_STEP_COMPLETE" },
++ { 0x20000000, "ECC_SEC_ERROR" },
++ { 0x40000000, "ECC_DED_ERROR" },
++ { 0x80000000, "TIMEOUT" },
+ {}
+ };
+
+diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
+index c4b1ac6750d8..3f86e548d795 100644
+--- a/drivers/media/usb/uvc/uvc_v4l2.c
++++ b/drivers/media/usb/uvc/uvc_v4l2.c
+@@ -1379,47 +1379,44 @@ static int uvc_v4l2_put_xu_query(const struct uvc_xu_control_query *kp,
+ static long uvc_v4l2_compat_ioctl32(struct file *file,
+ unsigned int cmd, unsigned long arg)
+ {
++ struct uvc_fh *handle = file->private_data;
+ union {
+ struct uvc_xu_control_mapping xmap;
+ struct uvc_xu_control_query xqry;
+ } karg;
+ void __user *up = compat_ptr(arg);
+- mm_segment_t old_fs;
+ long ret;
+
+ switch (cmd) {
+ case UVCIOC_CTRL_MAP32:
+- cmd = UVCIOC_CTRL_MAP;
+ ret = uvc_v4l2_get_xu_mapping(&karg.xmap, up);
++ if (ret)
++ return ret;
++ ret = uvc_ioctl_ctrl_map(handle->chain, &karg.xmap);
++ if (ret)
++ return ret;
++ ret = uvc_v4l2_put_xu_mapping(&karg.xmap, up);
++ if (ret)
++ return ret;
++
+ break;
+
+ case UVCIOC_CTRL_QUERY32:
+- cmd = UVCIOC_CTRL_QUERY;
+ ret = uvc_v4l2_get_xu_query(&karg.xqry, up);
++ if (ret)
++ return ret;
++ ret = uvc_xu_ctrl_query(handle->chain, &karg.xqry);
++ if (ret)
++ return ret;
++ ret = uvc_v4l2_put_xu_query(&karg.xqry, up);
++ if (ret)
++ return ret;
+ break;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+
+- old_fs = get_fs();
+- set_fs(KERNEL_DS);
+- ret = video_ioctl2(file, cmd, (unsigned long)&karg);
+- set_fs(old_fs);
+-
+- if (ret < 0)
+- return ret;
+-
+- switch (cmd) {
+- case UVCIOC_CTRL_MAP:
+- ret = uvc_v4l2_put_xu_mapping(&karg.xmap, up);
+- break;
+-
+- case UVCIOC_CTRL_QUERY:
+- ret = uvc_v4l2_put_xu_query(&karg.xqry, up);
+- break;
+- }
+-
+ return ret;
+ }
+ #endif
+diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
+index d5c0a1af08b9..eafaeb01aa3e 100644
+--- a/drivers/net/wireless/mac80211_hwsim.c
++++ b/drivers/net/wireless/mac80211_hwsim.c
+@@ -2724,6 +2724,7 @@ static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
+ if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
+ !info->attrs[HWSIM_ATTR_FLAGS] ||
+ !info->attrs[HWSIM_ATTR_COOKIE] ||
++ !info->attrs[HWSIM_ATTR_SIGNAL] ||
+ !info->attrs[HWSIM_ATTR_TX_INFO])
+ goto out;
+
+diff --git a/drivers/of/irq.c b/drivers/of/irq.c
+index 1a7980692f25..f5d497989fcd 100644
+--- a/drivers/of/irq.c
++++ b/drivers/of/irq.c
+@@ -385,13 +385,13 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
+ EXPORT_SYMBOL_GPL(of_irq_to_resource);
+
+ /**
+- * of_irq_get - Decode a node's IRQ and return it as a Linux irq number
++ * of_irq_get - Decode a node's IRQ and return it as a Linux IRQ number
+ * @dev: pointer to device tree node
+- * @index: zero-based index of the irq
+- *
+- * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
+- * is not yet created.
++ * @index: zero-based index of the IRQ
+ *
++ * Returns Linux IRQ number on success, or 0 on the IRQ mapping failure, or
++ * -EPROBE_DEFER if the IRQ domain is not yet created, or error code in case
++ * of any other failure.
+ */
+ int of_irq_get(struct device_node *dev, int index)
+ {
+@@ -412,12 +412,13 @@ int of_irq_get(struct device_node *dev, int index)
+ EXPORT_SYMBOL_GPL(of_irq_get);
+
+ /**
+- * of_irq_get_byname - Decode a node's IRQ and return it as a Linux irq number
++ * of_irq_get_byname - Decode a node's IRQ and return it as a Linux IRQ number
+ * @dev: pointer to device tree node
+- * @name: irq name
++ * @name: IRQ name
+ *
+- * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
+- * is not yet created, or error code in case of any other failure.
++ * Returns Linux IRQ number on success, or 0 on the IRQ mapping failure, or
++ * -EPROBE_DEFER if the IRQ domain is not yet created, or error code in case
++ * of any other failure.
+ */
+ int of_irq_get_byname(struct device_node *dev, const char *name)
+ {
+diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+index de08175aef0a..d32a72e96c72 100644
+--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+@@ -1030,9 +1030,10 @@ static void mtk_eint_irq_handler(unsigned irq, struct irq_desc *desc)
+ const struct mtk_desc_pin *pin;
+
+ chained_irq_enter(chip, desc);
+- for (eint_num = 0; eint_num < pctl->devdata->ap_num; eint_num += 32) {
++ for (eint_num = 0;
++ eint_num < pctl->devdata->ap_num;
++ eint_num += 32, reg += 4) {
+ status = readl(reg);
+- reg += 4;
+ while (status) {
+ offset = __ffs(status);
+ index = eint_num + offset;
+diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
+index ac418e73536d..42d3f82e75c7 100644
+--- a/drivers/scsi/scsi_devinfo.c
++++ b/drivers/scsi/scsi_devinfo.c
+@@ -227,6 +227,7 @@ static struct {
+ {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+ {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
+ {"Promise", "", NULL, BLIST_SPARSELUN},
++ {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
+ {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
+ {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
+ {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
+diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
+index 448ebdaa3d69..17fbf1d3eadc 100644
+--- a/drivers/scsi/scsi_lib.c
++++ b/drivers/scsi/scsi_lib.c
+@@ -909,9 +909,12 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
+ }
+
+ /*
+- * If we finished all bytes in the request we are done now.
++ * special case: failed zero length commands always need to
++ * drop down into the retry code. Otherwise, if we finished
++ * all bytes in the request we are done now.
+ */
+- if (!scsi_end_request(req, error, good_bytes, 0))
++ if (!(blk_rq_bytes(req) == 0 && error) &&
++ !scsi_end_request(req, error, good_bytes, 0))
+ return;
+
+ /*
+diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
+index f65f0d109fc8..5db5e91fd12f 100644
+--- a/drivers/thermal/cpu_cooling.c
++++ b/drivers/thermal/cpu_cooling.c
+@@ -52,7 +52,7 @@
+ * registered cooling device.
+ * @cpufreq_state: integer value representing the current state of cpufreq
+ * cooling devices.
+- * @cpufreq_val: integer value representing the absolute value of the clipped
++ * @clipped_freq: integer value representing the absolute value of the clipped
+ * frequency.
+ * @max_level: maximum cooling level. One less than total number of valid
+ * cpufreq frequencies.
+@@ -66,7 +66,7 @@ struct cpufreq_cooling_device {
+ int id;
+ struct thermal_cooling_device *cool_dev;
+ unsigned int cpufreq_state;
+- unsigned int cpufreq_val;
++ unsigned int clipped_freq;
+ unsigned int max_level;
+ unsigned int *freq_table; /* In descending order */
+ struct cpumask allowed_cpus;
+@@ -195,7 +195,7 @@ static int cpufreq_thermal_notifier(struct notifier_block *nb,
+ &cpufreq_dev->allowed_cpus))
+ continue;
+
+- max_freq = cpufreq_dev->cpufreq_val;
++ max_freq = cpufreq_dev->clipped_freq;
+
+ if (policy->max != max_freq)
+ cpufreq_verify_within_limits(policy, 0, max_freq);
+@@ -273,7 +273,7 @@ static int cpufreq_set_cur_state(struct thermal_cooling_device *cdev,
+
+ clip_freq = cpufreq_device->freq_table[state];
+ cpufreq_device->cpufreq_state = state;
+- cpufreq_device->cpufreq_val = clip_freq;
++ cpufreq_device->clipped_freq = clip_freq;
+
+ cpufreq_update_policy(cpu);
+
+@@ -363,14 +363,6 @@ __cpufreq_cooling_register(struct device_node *np,
+ goto free_table;
+ }
+
+- snprintf(dev_name, sizeof(dev_name), "thermal-cpufreq-%d",
+- cpufreq_dev->id);
+-
+- cool_dev = thermal_of_cooling_device_register(np, dev_name, cpufreq_dev,
+- &cpufreq_cooling_ops);
+- if (IS_ERR(cool_dev))
+- goto remove_idr;
+-
+ /* Fill freq-table in descending order of frequencies */
+ for (i = 0, freq = -1; i <= cpufreq_dev->max_level; i++) {
+ freq = find_next_max(table, freq);
+@@ -383,7 +375,15 @@ __cpufreq_cooling_register(struct device_node *np,
+ pr_debug("%s: freq:%u KHz\n", __func__, freq);
+ }
+
+- cpufreq_dev->cpufreq_val = cpufreq_dev->freq_table[0];
++ snprintf(dev_name, sizeof(dev_name), "thermal-cpufreq-%d",
++ cpufreq_dev->id);
++
++ cool_dev = thermal_of_cooling_device_register(np, dev_name, cpufreq_dev,
++ &cpufreq_cooling_ops);
++ if (IS_ERR(cool_dev))
++ goto remove_idr;
++
++ cpufreq_dev->clipped_freq = cpufreq_dev->freq_table[0];
+ cpufreq_dev->cool_dev = cool_dev;
+
+ mutex_lock(&cooling_cpufreq_lock);
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 10bce74c427f..2c75b393d31a 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -1618,7 +1618,7 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name)
+ struct dentry *dentry = __d_alloc(parent->d_sb, name);
+ if (!dentry)
+ return NULL;
+-
++ dentry->d_flags |= DCACHE_RCUACCESS;
+ spin_lock(&parent->d_lock);
+ /*
+ * don't need child lock because it is not subject
+@@ -2410,7 +2410,6 @@ static void __d_rehash(struct dentry * entry, struct hlist_bl_head *b)
+ {
+ BUG_ON(!d_unhashed(entry));
+ hlist_bl_lock(b);
+- entry->d_flags |= DCACHE_RCUACCESS;
+ hlist_bl_add_head_rcu(&entry->d_hash, b);
+ hlist_bl_unlock(b);
+ }
+@@ -2629,6 +2628,7 @@ static void __d_move(struct dentry *dentry, struct dentry *target,
+ /* ... and switch them in the tree */
+ if (IS_ROOT(dentry)) {
+ /* splicing a tree */
++ dentry->d_flags |= DCACHE_RCUACCESS;
+ dentry->d_parent = target->d_parent;
+ target->d_parent = target;
+ list_del_init(&target->d_child);
+diff --git a/fs/ecryptfs/kthread.c b/fs/ecryptfs/kthread.c
+index 866bb18efefe..e818f5ac7a26 100644
+--- a/fs/ecryptfs/kthread.c
++++ b/fs/ecryptfs/kthread.c
+@@ -25,6 +25,7 @@
+ #include <linux/slab.h>
+ #include <linux/wait.h>
+ #include <linux/mount.h>
++#include <linux/file.h>
+ #include "ecryptfs_kernel.h"
+
+ struct ecryptfs_open_req {
+@@ -147,7 +148,7 @@ int ecryptfs_privileged_open(struct file **lower_file,
+ flags |= IS_RDONLY(d_inode(lower_dentry)) ? O_RDONLY : O_RDWR;
+ (*lower_file) = dentry_open(&req.path, flags, cred);
+ if (!IS_ERR(*lower_file))
+- goto out;
++ goto have_file;
+ if ((flags & O_ACCMODE) == O_RDONLY) {
+ rc = PTR_ERR((*lower_file));
+ goto out;
+@@ -165,8 +166,16 @@ int ecryptfs_privileged_open(struct file **lower_file,
+ mutex_unlock(&ecryptfs_kthread_ctl.mux);
+ wake_up(&ecryptfs_kthread_ctl.wait);
+ wait_for_completion(&req.done);
+- if (IS_ERR(*lower_file))
++ if (IS_ERR(*lower_file)) {
+ rc = PTR_ERR(*lower_file);
++ goto out;
++ }
++have_file:
++ if ((*lower_file)->f_op->mmap == NULL) {
++ fput(*lower_file);
++ *lower_file = NULL;
++ rc = -EMEDIUMTYPE;
++ }
+ out:
+ return rc;
+ }
+diff --git a/fs/namespace.c b/fs/namespace.c
+index fce3cc1a3fa7..6257268147ee 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -2390,8 +2390,10 @@ static int do_new_mount(struct path *path, const char *fstype, int flags,
+ mnt_flags |= MNT_NODEV | MNT_LOCK_NODEV;
+ }
+ if (type->fs_flags & FS_USERNS_VISIBLE) {
+- if (!fs_fully_visible(type, &mnt_flags))
++ if (!fs_fully_visible(type, &mnt_flags)) {
++ put_filesystem(type);
+ return -EPERM;
++ }
+ }
+ }
+
+@@ -3236,7 +3238,7 @@ static bool fs_fully_visible(struct file_system_type *type, int *new_mnt_flags)
+ list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
+ struct inode *inode = child->mnt_mountpoint->d_inode;
+ /* Only worry about locked mounts */
+- if (!(mnt->mnt.mnt_flags & MNT_LOCKED))
++ if (!(child->mnt.mnt_flags & MNT_LOCKED))
+ continue;
+ /* Is the directory permanetly empty? */
+ if (!is_empty_dir_inode(inode))
+diff --git a/fs/proc/root.c b/fs/proc/root.c
+index 68feb0f70e63..c3e1bc595e6d 100644
+--- a/fs/proc/root.c
++++ b/fs/proc/root.c
+@@ -121,6 +121,13 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
+ if (IS_ERR(sb))
+ return ERR_CAST(sb);
+
++ /*
++ * procfs isn't actually a stacking filesystem; however, there is
++ * too much magic going on inside it to permit stacking things on
++ * top of it
++ */
++ sb->s_stack_depth = FILESYSTEM_MAX_STACK_DEPTH;
++
+ if (!proc_parse_options(options, ns)) {
+ deactivate_locked_super(sb);
+ return ERR_PTR(-EINVAL);
+diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
+index ffbc034c8810..cbf1ce800fd1 100644
+--- a/include/linux/irqchip/arm-gic-v3.h
++++ b/include/linux/irqchip/arm-gic-v3.h
+@@ -307,7 +307,7 @@
+ #define ICC_SGI1R_AFFINITY_1_SHIFT 16
+ #define ICC_SGI1R_AFFINITY_1_MASK (0xff << ICC_SGI1R_AFFINITY_1_SHIFT)
+ #define ICC_SGI1R_SGI_ID_SHIFT 24
+-#define ICC_SGI1R_SGI_ID_MASK (0xff << ICC_SGI1R_SGI_ID_SHIFT)
++#define ICC_SGI1R_SGI_ID_MASK (0xfULL << ICC_SGI1R_SGI_ID_SHIFT)
+ #define ICC_SGI1R_AFFINITY_2_SHIFT 32
+ #define ICC_SGI1R_AFFINITY_2_MASK (0xffULL << ICC_SGI1R_AFFINITY_1_SHIFT)
+ #define ICC_SGI1R_IRQ_ROUTING_MODE_BIT 40
+diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c
+index 4cccea6b8934..6f1c3e41b2a6 100644
+--- a/kernel/locking/mutex.c
++++ b/kernel/locking/mutex.c
+@@ -486,9 +486,6 @@ __ww_mutex_lock_check_stamp(struct mutex *lock, struct ww_acquire_ctx *ctx)
+ if (!hold_ctx)
+ return 0;
+
+- if (unlikely(ctx == hold_ctx))
+- return -EALREADY;
+-
+ if (ctx->stamp - hold_ctx->stamp <= LONG_MAX &&
+ (ctx->stamp != hold_ctx->stamp || ctx > hold_ctx)) {
+ #ifdef CONFIG_DEBUG_MUTEXES
+@@ -514,6 +511,12 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass,
+ unsigned long flags;
+ int ret;
+
++ if (use_ww_ctx) {
++ struct ww_mutex *ww = container_of(lock, struct ww_mutex, base);
++ if (unlikely(ww_ctx == READ_ONCE(ww->ctx)))
++ return -EALREADY;
++ }
++
+ preempt_disable();
+ mutex_acquire_nest(&lock->dep_map, subclass, 0, nest_lock, ip);
+
+diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
+index afcc67a157fd..c5af4e3d4497 100644
+--- a/net/mac80211/mesh.c
++++ b/net/mac80211/mesh.c
+@@ -161,6 +161,10 @@ void mesh_sta_cleanup(struct sta_info *sta)
+ del_timer_sync(&sta->plink_timer);
+ }
+
++ /* make sure no readers can access nexthop sta from here on */
++ mesh_path_flush_by_nexthop(sta);
++ synchronize_net();
++
+ if (changed)
+ ieee80211_mbss_info_change_notify(sdata, changed);
+ }
+diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
+index b50ee5d622e1..c753211cb83f 100644
+--- a/net/wireless/wext-core.c
++++ b/net/wireless/wext-core.c
+@@ -955,8 +955,29 @@ static int wireless_process_ioctl(struct net *net, struct ifreq *ifr,
+ return private(dev, iwr, cmd, info, handler);
+ }
+ /* Old driver API : call driver ioctl handler */
+- if (dev->netdev_ops->ndo_do_ioctl)
+- return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
++ if (dev->netdev_ops->ndo_do_ioctl) {
++#ifdef CONFIG_COMPAT
++ if (info->flags & IW_REQUEST_FLAG_COMPAT) {
++ int ret = 0;
++ struct iwreq iwr_lcl;
++ struct compat_iw_point *iwp_compat = (void *) &iwr->u.data;
++
++ memcpy(&iwr_lcl, iwr, sizeof(struct iwreq));
++ iwr_lcl.u.data.pointer = compat_ptr(iwp_compat->pointer);
++ iwr_lcl.u.data.length = iwp_compat->length;
++ iwr_lcl.u.data.flags = iwp_compat->flags;
++
++ ret = dev->netdev_ops->ndo_do_ioctl(dev, (void *) &iwr_lcl, cmd);
++
++ iwp_compat->pointer = ptr_to_compat(iwr_lcl.u.data.pointer);
++ iwp_compat->length = iwr_lcl.u.data.length;
++ iwp_compat->flags = iwr_lcl.u.data.flags;
++
++ return ret;
++ } else
++#endif
++ return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
++ }
+ return -EOPNOTSUPP;
+ }
+
+diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
+index 78691d51a479..0ef6956dcfa6 100644
+--- a/scripts/mod/file2alias.c
++++ b/scripts/mod/file2alias.c
+@@ -653,7 +653,7 @@ static int do_of_entry (const char *filename, void *symval, char *alias)
+ len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
+ (*type)[0] ? *type : "*");
+
+- if (compatible[0])
++ if ((*compatible)[0])
+ sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
+ *compatible);
+
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index bee74795c9b9..a62872f7b41a 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -3608,13 +3608,20 @@ static void alc269_fixup_hp_line1_mic1_led(struct hda_codec *codec,
+ static void alc_headset_mode_unplugged(struct hda_codec *codec)
+ {
+ static struct coef_fw coef0255[] = {
+- WRITE_COEF(0x1b, 0x0c0b), /* LDO and MISC control */
+ WRITE_COEF(0x45, 0xd089), /* UAJ function set to menual mode */
+ UPDATE_COEFEX(0x57, 0x05, 1<<14, 0), /* Direct Drive HP Amp control(Set to verb control)*/
+ WRITE_COEF(0x06, 0x6104), /* Set MIC2 Vref gate with HP */
+ WRITE_COEFEX(0x57, 0x03, 0x8aa6), /* Direct Drive HP Amp control */
+ {}
+ };
++ static struct coef_fw coef0255_1[] = {
++ WRITE_COEF(0x1b, 0x0c0b), /* LDO and MISC control */
++ {}
++ };
++ static struct coef_fw coef0256[] = {
++ WRITE_COEF(0x1b, 0x0c4b), /* LDO and MISC control */
++ {}
++ };
+ static struct coef_fw coef0233[] = {
+ WRITE_COEF(0x1b, 0x0c0b),
+ WRITE_COEF(0x45, 0xc429),
+@@ -3657,7 +3664,11 @@ static void alc_headset_mode_unplugged(struct hda_codec *codec)
+
+ switch (codec->core.vendor_id) {
+ case 0x10ec0255:
++ alc_process_coef_fw(codec, coef0255_1);
++ alc_process_coef_fw(codec, coef0255);
++ break;
+ case 0x10ec0256:
++ alc_process_coef_fw(codec, coef0256);
+ alc_process_coef_fw(codec, coef0255);
+ break;
+ case 0x10ec0233:
+@@ -3854,6 +3865,12 @@ static void alc_headset_mode_ctia(struct hda_codec *codec)
+ WRITE_COEFEX(0x57, 0x03, 0x8ea6),
+ {}
+ };
++ static struct coef_fw coef0256[] = {
++ WRITE_COEF(0x45, 0xd489), /* Set to CTIA type */
++ WRITE_COEF(0x1b, 0x0c6b),
++ WRITE_COEFEX(0x57, 0x03, 0x8ea6),
++ {}
++ };
+ static struct coef_fw coef0233[] = {
+ WRITE_COEF(0x45, 0xd429),
+ WRITE_COEF(0x1b, 0x0c2b),
+@@ -3887,9 +3904,11 @@ static void alc_headset_mode_ctia(struct hda_codec *codec)
+
+ switch (codec->core.vendor_id) {
+ case 0x10ec0255:
+- case 0x10ec0256:
+ alc_process_coef_fw(codec, coef0255);
+ break;
++ case 0x10ec0256:
++ alc_process_coef_fw(codec, coef0256);
++ break;
+ case 0x10ec0233:
+ case 0x10ec0283:
+ alc_process_coef_fw(codec, coef0233);
+@@ -3922,6 +3941,12 @@ static void alc_headset_mode_omtp(struct hda_codec *codec)
+ WRITE_COEFEX(0x57, 0x03, 0x8ea6),
+ {}
+ };
++ static struct coef_fw coef0256[] = {
++ WRITE_COEF(0x45, 0xe489), /* Set to OMTP Type */
++ WRITE_COEF(0x1b, 0x0c6b),
++ WRITE_COEFEX(0x57, 0x03, 0x8ea6),
++ {}
++ };
+ static struct coef_fw coef0233[] = {
+ WRITE_COEF(0x45, 0xe429),
+ WRITE_COEF(0x1b, 0x0c2b),
+@@ -3955,9 +3980,11 @@ static void alc_headset_mode_omtp(struct hda_codec *codec)
+
+ switch (codec->core.vendor_id) {
+ case 0x10ec0255:
+- case 0x10ec0256:
+ alc_process_coef_fw(codec, coef0255);
+ break;
++ case 0x10ec0256:
++ alc_process_coef_fw(codec, coef0256);
++ break;
+ case 0x10ec0233:
+ case 0x10ec0283:
+ alc_process_coef_fw(codec, coef0233);
+@@ -4181,7 +4208,7 @@ static void alc_fixup_headset_mode_no_hp_mic(struct hda_codec *codec,
+ static void alc255_set_default_jack_type(struct hda_codec *codec)
+ {
+ /* Set to iphone type */
+- static struct coef_fw fw[] = {
++ static struct coef_fw alc255fw[] = {
+ WRITE_COEF(0x1b, 0x880b),
+ WRITE_COEF(0x45, 0xd089),
+ WRITE_COEF(0x1b, 0x080b),
+@@ -4189,7 +4216,22 @@ static void alc255_set_default_jack_type(struct hda_codec *codec)
+ WRITE_COEF(0x1b, 0x0c0b),
+ {}
+ };
+- alc_process_coef_fw(codec, fw);
++ static struct coef_fw alc256fw[] = {
++ WRITE_COEF(0x1b, 0x884b),
++ WRITE_COEF(0x45, 0xd089),
++ WRITE_COEF(0x1b, 0x084b),
++ WRITE_COEF(0x46, 0x0004),
++ WRITE_COEF(0x1b, 0x0c4b),
++ {}
++ };
++ switch (codec->core.vendor_id) {
++ case 0x10ec0255:
++ alc_process_coef_fw(codec, alc255fw);
++ break;
++ case 0x10ec0256:
++ alc_process_coef_fw(codec, alc256fw);
++ break;
++ }
+ msleep(30);
+ }
+
+@@ -5446,6 +5488,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x2218, "Thinkpad X1 Carbon 2nd", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2223, "ThinkPad T550", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
++ SND_PCI_QUIRK(0x17aa, 0x2231, "Thinkpad T560", ALC292_FIXUP_TPT460),
+ SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC292_FIXUP_TPT460),
+ SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
+ SND_PCI_QUIRK(0x17aa, 0x30e2, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
+@@ -5698,6 +5741,10 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ {0x17, 0x40000000},
+ {0x1d, 0x40700001},
+ {0x21, 0x02211040}),
++ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell Inspiron 5565", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x12, 0x90a60180},
++ {0x14, 0x90170120},
++ {0x21, 0x02211030}),
+ SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC255_STANDARD_PINS,
+ {0x12, 0x90a60160},
+diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c
+index 1d56a901e791..1470f2aab091 100644
+--- a/virt/kvm/irqchip.c
++++ b/virt/kvm/irqchip.c
+@@ -51,7 +51,7 @@ int kvm_irq_map_gsi(struct kvm *kvm,
+
+ irq_rt = srcu_dereference_check(kvm->irq_routing, &kvm->irq_srcu,
+ lockdep_is_held(&kvm->irq_lock));
+- if (gsi < irq_rt->nr_rt_entries) {
++ if (irq_rt && gsi < irq_rt->nr_rt_entries) {
+ hlist_for_each_entry(e, &irq_rt->map[gsi], link) {
+ entries[n] = *e;
+ ++n;
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-06-08 11:17 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-06-08 11:17 UTC (permalink / raw
To: gentoo-commits
commit: d8670f4c5aadaf0577ffb7e424f6bfd145d5ed2f
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Jun 8 11:17:42 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Jun 8 11:17:42 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=d8670f4c
Linux patch 4.1.26
0000_README | 4 +
1025_linux-4.1.26.patch | 6090 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 6094 insertions(+)
diff --git a/0000_README b/0000_README
index fcfa288..783092f 100644
--- a/0000_README
+++ b/0000_README
@@ -143,6 +143,10 @@ Patch: 1024_linux-4.1.25.patch
From: http://www.kernel.org
Desc: Linux 4.1.25
+Patch: 1025_linux-4.1.26.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.26
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1025_linux-4.1.26.patch b/1025_linux-4.1.26.patch
new file mode 100644
index 0000000..573cabf
--- /dev/null
+++ b/1025_linux-4.1.26.patch
@@ -0,0 +1,6090 @@
+diff --git a/Documentation/devicetree/bindings/crypto/samsung-sss.txt b/Documentation/devicetree/bindings/crypto/samsung-sss.txt
+index a6dafa83c6df..7a5ca56683cc 100644
+--- a/Documentation/devicetree/bindings/crypto/samsung-sss.txt
++++ b/Documentation/devicetree/bindings/crypto/samsung-sss.txt
+@@ -23,10 +23,8 @@ Required properties:
+ - "samsung,exynos4210-secss" for Exynos4210, Exynos4212, Exynos4412, Exynos5250,
+ Exynos5260 and Exynos5420 SoCs.
+ - reg : Offset and length of the register set for the module
+-- interrupts : interrupt specifiers of SSS module interrupts, should contain
+- following entries:
+- - first : feed control interrupt (required for all variants),
+- - second : hash interrupt (required only for samsung,s5pv210-secss).
++- interrupts : interrupt specifiers of SSS module interrupts (one feed
++ control interrupt).
+
+ - clocks : list of clock phandle and specifier pairs for all clocks listed in
+ clock-names property.
+diff --git a/Documentation/serial/tty.txt b/Documentation/serial/tty.txt
+index dbe6623fed1c..1e52d67d0abf 100644
+--- a/Documentation/serial/tty.txt
++++ b/Documentation/serial/tty.txt
+@@ -198,9 +198,6 @@ TTY_IO_ERROR If set, causes all subsequent userspace read/write
+
+ TTY_OTHER_CLOSED Device is a pty and the other side has closed.
+
+-TTY_OTHER_DONE Device is a pty and the other side has closed and
+- all pending input processing has been completed.
+-
+ TTY_NO_WRITE_SPLIT Prevent driver from splitting up writes into
+ smaller chunks.
+
+diff --git a/Makefile b/Makefile
+index c2f929d78726..080a87e290b9 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 25
++SUBLEVEL = 26
+ EXTRAVERSION =
+ NAME = Series 4800
+
+@@ -374,7 +374,7 @@ AFLAGS_MODULE =
+ LDFLAGS_MODULE =
+ CFLAGS_KERNEL =
+ AFLAGS_KERNEL =
+-CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
++CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im
+
+
+ # Use USERINCLUDE when you must reference the UAPI directories only.
+@@ -686,9 +686,10 @@ KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
+ KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
+ else
+
+-# This warning generated too much noise in a regular build.
+-# Use make W=1 to enable this warning (see scripts/Makefile.build)
++# These warnings generated too much noise in a regular build.
++# Use make W=1 to enable them (see scripts/Makefile.build)
+ KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
++KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
+ endif
+
+ ifdef CONFIG_FRAME_POINTER
+diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
+index da09ddcfcc00..691ea94897fd 100644
+--- a/arch/arm/kvm/mmu.c
++++ b/arch/arm/kvm/mmu.c
+@@ -886,11 +886,14 @@ static int stage2_set_pmd_huge(struct kvm *kvm, struct kvm_mmu_memory_cache
+ VM_BUG_ON(pmd_present(*pmd) && pmd_pfn(*pmd) != pmd_pfn(*new_pmd));
+
+ old_pmd = *pmd;
+- kvm_set_pmd(pmd, *new_pmd);
+- if (pmd_present(old_pmd))
++ if (pmd_present(old_pmd)) {
++ pmd_clear(pmd);
+ kvm_tlb_flush_vmid_ipa(kvm, addr);
+- else
++ } else {
+ get_page(virt_to_page(pmd));
++ }
++
++ kvm_set_pmd(pmd, *new_pmd);
+ return 0;
+ }
+
+@@ -939,12 +942,14 @@ static int stage2_set_pte(struct kvm *kvm, struct kvm_mmu_memory_cache *cache,
+
+ /* Create 2nd stage page table mapping - Level 3 */
+ old_pte = *pte;
+- kvm_set_pte(pte, *new_pte);
+- if (pte_present(old_pte))
++ if (pte_present(old_pte)) {
++ kvm_set_pte(pte, __pte(0));
+ kvm_tlb_flush_vmid_ipa(kvm, addr);
+- else
++ } else {
+ get_page(virt_to_page(pte));
++ }
+
++ kvm_set_pte(pte, *new_pte);
+ return 0;
+ }
+
+diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h
+index 59bfae75dc98..d007a7b5015a 100644
+--- a/arch/arm64/include/asm/pgtable-hwdef.h
++++ b/arch/arm64/include/asm/pgtable-hwdef.h
+@@ -77,7 +77,6 @@
+ * Section
+ */
+ #define PMD_SECT_VALID (_AT(pmdval_t, 1) << 0)
+-#define PMD_SECT_PROT_NONE (_AT(pmdval_t, 1) << 58)
+ #define PMD_SECT_USER (_AT(pmdval_t, 1) << 6) /* AP[1] */
+ #define PMD_SECT_RDONLY (_AT(pmdval_t, 1) << 7) /* AP[2] */
+ #define PMD_SECT_S (_AT(pmdval_t, 3) << 8)
+diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
+index 526a9cb218d3..f1fc3140dedb 100644
+--- a/arch/arm64/include/asm/pgtable.h
++++ b/arch/arm64/include/asm/pgtable.h
+@@ -285,6 +285,7 @@ void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address,
+ #endif /* CONFIG_HAVE_RCU_TABLE_FREE */
+ #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+
++#define pmd_present(pmd) pte_present(pmd_pte(pmd))
+ #define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
+ #define pmd_young(pmd) pte_young(pmd_pte(pmd))
+ #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd)))
+@@ -293,7 +294,7 @@ void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address,
+ #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd)))
+ #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd)))
+ #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd)))
+-#define pmd_mknotpresent(pmd) (__pmd(pmd_val(pmd) & ~PMD_TYPE_MASK))
++#define pmd_mknotpresent(pmd) (__pmd(pmd_val(pmd) & ~PMD_SECT_VALID))
+
+ #define __HAVE_ARCH_PMD_WRITE
+ #define pmd_write(pmd) pte_write(pmd_pte(pmd))
+@@ -332,7 +333,6 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
+ unsigned long size, pgprot_t vma_prot);
+
+ #define pmd_none(pmd) (!pmd_val(pmd))
+-#define pmd_present(pmd) (pmd_val(pmd))
+
+ #define pmd_bad(pmd) (!(pmd_val(pmd) & 2))
+
+diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c
+index 648112e90ed5..3972e65fbd5a 100644
+--- a/arch/arm64/kvm/inject_fault.c
++++ b/arch/arm64/kvm/inject_fault.c
+@@ -130,7 +130,7 @@ static void inject_abt64(struct kvm_vcpu *vcpu, bool is_iabt, unsigned long addr
+ esr |= (ESR_ELx_EC_IABT_CUR << ESR_ELx_EC_SHIFT);
+
+ if (!is_iabt)
+- esr |= ESR_ELx_EC_DABT_LOW;
++ esr |= ESR_ELx_EC_DABT_LOW << ESR_ELx_EC_SHIFT;
+
+ vcpu_sys_reg(vcpu, ESR_EL1) = esr | ESR_ELx_FSC_EXTABT;
+ }
+diff --git a/arch/mips/ath79/early_printk.c b/arch/mips/ath79/early_printk.c
+index b955fafc58ba..d1adc59af5bf 100644
+--- a/arch/mips/ath79/early_printk.c
++++ b/arch/mips/ath79/early_printk.c
+@@ -31,13 +31,15 @@ static inline void prom_putchar_wait(void __iomem *reg, u32 mask, u32 val)
+ } while (1);
+ }
+
++#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
++
+ static void prom_putchar_ar71xx(unsigned char ch)
+ {
+ void __iomem *base = (void __iomem *)(KSEG1ADDR(AR71XX_UART_BASE));
+
+- prom_putchar_wait(base + UART_LSR * 4, UART_LSR_THRE, UART_LSR_THRE);
++ prom_putchar_wait(base + UART_LSR * 4, BOTH_EMPTY, BOTH_EMPTY);
+ __raw_writel(ch, base + UART_TX * 4);
+- prom_putchar_wait(base + UART_LSR * 4, UART_LSR_THRE, UART_LSR_THRE);
++ prom_putchar_wait(base + UART_LSR * 4, BOTH_EMPTY, BOTH_EMPTY);
+ }
+
+ static void prom_putchar_ar933x(unsigned char ch)
+diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h
+index 723229f4cf27..176de586a71a 100644
+--- a/arch/mips/include/asm/cacheflush.h
++++ b/arch/mips/include/asm/cacheflush.h
+@@ -51,7 +51,6 @@ extern void (*flush_cache_range)(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end);
+ extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
+ extern void __flush_dcache_page(struct page *page);
+-extern void __flush_icache_page(struct vm_area_struct *vma, struct page *page);
+
+ #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
+ static inline void flush_dcache_page(struct page *page)
+@@ -77,11 +76,6 @@ static inline void flush_anon_page(struct vm_area_struct *vma,
+ static inline void flush_icache_page(struct vm_area_struct *vma,
+ struct page *page)
+ {
+- if (!cpu_has_ic_fills_f_dc && (vma->vm_flags & VM_EXEC) &&
+- Page_dcache_dirty(page)) {
+- __flush_icache_page(vma, page);
+- ClearPageDcacheDirty(page);
+- }
+ }
+
+ extern void (*flush_icache_range)(unsigned long start, unsigned long end);
+diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
+index 4c25823563fe..3585af093576 100644
+--- a/arch/mips/include/asm/kvm_host.h
++++ b/arch/mips/include/asm/kvm_host.h
+@@ -782,7 +782,7 @@ extern enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
+
+ uint32_t kvm_mips_read_count(struct kvm_vcpu *vcpu);
+ void kvm_mips_write_count(struct kvm_vcpu *vcpu, uint32_t count);
+-void kvm_mips_write_compare(struct kvm_vcpu *vcpu, uint32_t compare);
++void kvm_mips_write_compare(struct kvm_vcpu *vcpu, uint32_t compare, bool ack);
+ void kvm_mips_init_count(struct kvm_vcpu *vcpu);
+ int kvm_mips_set_count_ctl(struct kvm_vcpu *vcpu, s64 count_ctl);
+ int kvm_mips_set_count_resume(struct kvm_vcpu *vcpu, s64 count_resume);
+diff --git a/arch/mips/include/asm/msa.h b/arch/mips/include/asm/msa.h
+index af5638b12c75..38bbeda8644c 100644
+--- a/arch/mips/include/asm/msa.h
++++ b/arch/mips/include/asm/msa.h
+@@ -67,6 +67,19 @@ static inline void restore_msa(struct task_struct *t)
+ _restore_msa(t);
+ }
+
++static inline void init_msa_upper(void)
++{
++ /*
++ * Check cpu_has_msa only if it's a constant. This will allow the
++ * compiler to optimise out code for CPUs without MSA without adding
++ * an extra redundant check for CPUs with MSA.
++ */
++ if (__builtin_constant_p(cpu_has_msa) && !cpu_has_msa)
++ return;
++
++ _init_msa_upper();
++}
++
+ #ifdef TOOLCHAIN_SUPPORTS_MSA
+
+ #define __BUILD_MSA_CTL_REG(name, cs) \
+diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
+index 7fe24aef7fdc..f33206e27d8d 100644
+--- a/arch/mips/include/asm/pgtable.h
++++ b/arch/mips/include/asm/pgtable.h
+@@ -127,10 +127,14 @@ do { \
+ } \
+ } while(0)
+
++static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
++ pte_t *ptep, pte_t pteval);
++
+ #if defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32)
+
+ #define pte_none(pte) (!(((pte).pte_high) & ~_PAGE_GLOBAL))
+ #define pte_present(pte) ((pte).pte_low & _PAGE_PRESENT)
++#define pte_no_exec(pte) ((pte).pte_low & _PAGE_NO_EXEC)
+
+ static inline void set_pte(pte_t *ptep, pte_t pte)
+ {
+@@ -148,7 +152,6 @@ static inline void set_pte(pte_t *ptep, pte_t pte)
+ buddy->pte_high |= _PAGE_GLOBAL;
+ }
+ }
+-#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
+
+ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+ {
+@@ -166,6 +169,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt
+
+ #define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL))
+ #define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
++#define pte_no_exec(pte) (pte_val(pte) & _PAGE_NO_EXEC)
+
+ /*
+ * Certain architectures need to do special things when pte's
+@@ -218,7 +222,6 @@ static inline void set_pte(pte_t *ptep, pte_t pteval)
+ }
+ #endif
+ }
+-#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
+
+ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+ {
+@@ -234,6 +237,22 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt
+ }
+ #endif
+
++static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
++ pte_t *ptep, pte_t pteval)
++{
++ extern void __update_cache(unsigned long address, pte_t pte);
++
++ if (!pte_present(pteval))
++ goto cache_sync_done;
++
++ if (pte_present(*ptep) && (pte_pfn(*ptep) == pte_pfn(pteval)))
++ goto cache_sync_done;
++
++ __update_cache(addr, pteval);
++cache_sync_done:
++ set_pte(ptep, pteval);
++}
++
+ /*
+ * (pmds are folded into puds so this doesn't get actually called,
+ * but the define is needed for a generic inline function.)
+@@ -428,15 +447,12 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+
+ extern void __update_tlb(struct vm_area_struct *vma, unsigned long address,
+ pte_t pte);
+-extern void __update_cache(struct vm_area_struct *vma, unsigned long address,
+- pte_t pte);
+
+ static inline void update_mmu_cache(struct vm_area_struct *vma,
+ unsigned long address, pte_t *ptep)
+ {
+ pte_t pte = *ptep;
+ __update_tlb(vma, address, pte);
+- __update_cache(vma, address, pte);
+ }
+
+ static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
+diff --git a/arch/mips/include/uapi/asm/siginfo.h b/arch/mips/include/uapi/asm/siginfo.h
+index 2cb7fdead570..e2b5337e840f 100644
+--- a/arch/mips/include/uapi/asm/siginfo.h
++++ b/arch/mips/include/uapi/asm/siginfo.h
+@@ -28,7 +28,7 @@
+
+ #define __ARCH_SIGSYS
+
+-#include <uapi/asm-generic/siginfo.h>
++#include <asm-generic/siginfo.h>
+
+ /* We can't use generic siginfo_t, because our si_code and si_errno are swapped */
+ typedef struct siginfo {
+@@ -42,13 +42,13 @@ typedef struct siginfo {
+
+ /* kill() */
+ struct {
+- pid_t _pid; /* sender's pid */
++ __kernel_pid_t _pid; /* sender's pid */
+ __ARCH_SI_UID_T _uid; /* sender's uid */
+ } _kill;
+
+ /* POSIX.1b timers */
+ struct {
+- timer_t _tid; /* timer id */
++ __kernel_timer_t _tid; /* timer id */
+ int _overrun; /* overrun count */
+ char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
+ sigval_t _sigval; /* same as below */
+@@ -57,26 +57,26 @@ typedef struct siginfo {
+
+ /* POSIX.1b signals */
+ struct {
+- pid_t _pid; /* sender's pid */
++ __kernel_pid_t _pid; /* sender's pid */
+ __ARCH_SI_UID_T _uid; /* sender's uid */
+ sigval_t _sigval;
+ } _rt;
+
+ /* SIGCHLD */
+ struct {
+- pid_t _pid; /* which child */
++ __kernel_pid_t _pid; /* which child */
+ __ARCH_SI_UID_T _uid; /* sender's uid */
+ int _status; /* exit code */
+- clock_t _utime;
+- clock_t _stime;
++ __kernel_clock_t _utime;
++ __kernel_clock_t _stime;
+ } _sigchld;
+
+ /* IRIX SIGCHLD */
+ struct {
+- pid_t _pid; /* which child */
+- clock_t _utime;
++ __kernel_pid_t _pid; /* which child */
++ __kernel_clock_t _utime;
+ int _status; /* exit code */
+- clock_t _stime;
++ __kernel_clock_t _stime;
+ } _irix_sigchld;
+
+ /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
+@@ -118,6 +118,4 @@ typedef struct siginfo {
+ #define SI_TIMER __SI_CODE(__SI_TIMER, -3) /* sent by timer expiration */
+ #define SI_MESGQ __SI_CODE(__SI_MESGQ, -4) /* sent by real time mesq state change */
+
+-#include <asm-generic/siginfo.h>
+-
+ #endif /* _UAPI_ASM_SIGINFO_H */
+diff --git a/arch/mips/kernel/mips-r2-to-r6-emul.c b/arch/mips/kernel/mips-r2-to-r6-emul.c
+index f2977f00911b..e19fa363c8fe 100644
+--- a/arch/mips/kernel/mips-r2-to-r6-emul.c
++++ b/arch/mips/kernel/mips-r2-to-r6-emul.c
+@@ -27,6 +27,7 @@
+ #include <asm/inst.h>
+ #include <asm/mips-r2-to-r6-emul.h>
+ #include <asm/local.h>
++#include <asm/mipsregs.h>
+ #include <asm/ptrace.h>
+ #include <asm/uaccess.h>
+
+@@ -1250,10 +1251,10 @@ fpu_emul:
+ " j 10b\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .word 1b,8b\n"
+- " .word 2b,8b\n"
+- " .word 3b,8b\n"
+- " .word 4b,8b\n"
++ STR(PTR) " 1b,8b\n"
++ STR(PTR) " 2b,8b\n"
++ STR(PTR) " 3b,8b\n"
++ STR(PTR) " 4b,8b\n"
+ " .previous\n"
+ " .set pop\n"
+ : "+&r"(rt), "=&r"(rs),
+@@ -1325,10 +1326,10 @@ fpu_emul:
+ " j 10b\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .word 1b,8b\n"
+- " .word 2b,8b\n"
+- " .word 3b,8b\n"
+- " .word 4b,8b\n"
++ STR(PTR) " 1b,8b\n"
++ STR(PTR) " 2b,8b\n"
++ STR(PTR) " 3b,8b\n"
++ STR(PTR) " 4b,8b\n"
+ " .previous\n"
+ " .set pop\n"
+ : "+&r"(rt), "=&r"(rs),
+@@ -1396,10 +1397,10 @@ fpu_emul:
+ " j 9b\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .word 1b,8b\n"
+- " .word 2b,8b\n"
+- " .word 3b,8b\n"
+- " .word 4b,8b\n"
++ STR(PTR) " 1b,8b\n"
++ STR(PTR) " 2b,8b\n"
++ STR(PTR) " 3b,8b\n"
++ STR(PTR) " 4b,8b\n"
+ " .previous\n"
+ " .set pop\n"
+ : "+&r"(rt), "=&r"(rs),
+@@ -1466,10 +1467,10 @@ fpu_emul:
+ " j 9b\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .word 1b,8b\n"
+- " .word 2b,8b\n"
+- " .word 3b,8b\n"
+- " .word 4b,8b\n"
++ STR(PTR) " 1b,8b\n"
++ STR(PTR) " 2b,8b\n"
++ STR(PTR) " 3b,8b\n"
++ STR(PTR) " 4b,8b\n"
+ " .previous\n"
+ " .set pop\n"
+ : "+&r"(rt), "=&r"(rs),
+@@ -1581,14 +1582,14 @@ fpu_emul:
+ " j 9b\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .word 1b,8b\n"
+- " .word 2b,8b\n"
+- " .word 3b,8b\n"
+- " .word 4b,8b\n"
+- " .word 5b,8b\n"
+- " .word 6b,8b\n"
+- " .word 7b,8b\n"
+- " .word 0b,8b\n"
++ STR(PTR) " 1b,8b\n"
++ STR(PTR) " 2b,8b\n"
++ STR(PTR) " 3b,8b\n"
++ STR(PTR) " 4b,8b\n"
++ STR(PTR) " 5b,8b\n"
++ STR(PTR) " 6b,8b\n"
++ STR(PTR) " 7b,8b\n"
++ STR(PTR) " 0b,8b\n"
+ " .previous\n"
+ " .set pop\n"
+ : "+&r"(rt), "=&r"(rs),
+@@ -1700,14 +1701,14 @@ fpu_emul:
+ " j 9b\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .word 1b,8b\n"
+- " .word 2b,8b\n"
+- " .word 3b,8b\n"
+- " .word 4b,8b\n"
+- " .word 5b,8b\n"
+- " .word 6b,8b\n"
+- " .word 7b,8b\n"
+- " .word 0b,8b\n"
++ STR(PTR) " 1b,8b\n"
++ STR(PTR) " 2b,8b\n"
++ STR(PTR) " 3b,8b\n"
++ STR(PTR) " 4b,8b\n"
++ STR(PTR) " 5b,8b\n"
++ STR(PTR) " 6b,8b\n"
++ STR(PTR) " 7b,8b\n"
++ STR(PTR) " 0b,8b\n"
+ " .previous\n"
+ " .set pop\n"
+ : "+&r"(rt), "=&r"(rs),
+@@ -1819,14 +1820,14 @@ fpu_emul:
+ " j 9b\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .word 1b,8b\n"
+- " .word 2b,8b\n"
+- " .word 3b,8b\n"
+- " .word 4b,8b\n"
+- " .word 5b,8b\n"
+- " .word 6b,8b\n"
+- " .word 7b,8b\n"
+- " .word 0b,8b\n"
++ STR(PTR) " 1b,8b\n"
++ STR(PTR) " 2b,8b\n"
++ STR(PTR) " 3b,8b\n"
++ STR(PTR) " 4b,8b\n"
++ STR(PTR) " 5b,8b\n"
++ STR(PTR) " 6b,8b\n"
++ STR(PTR) " 7b,8b\n"
++ STR(PTR) " 0b,8b\n"
+ " .previous\n"
+ " .set pop\n"
+ : "+&r"(rt), "=&r"(rs),
+@@ -1937,14 +1938,14 @@ fpu_emul:
+ " j 9b\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+- " .word 1b,8b\n"
+- " .word 2b,8b\n"
+- " .word 3b,8b\n"
+- " .word 4b,8b\n"
+- " .word 5b,8b\n"
+- " .word 6b,8b\n"
+- " .word 7b,8b\n"
+- " .word 0b,8b\n"
++ STR(PTR) " 1b,8b\n"
++ STR(PTR) " 2b,8b\n"
++ STR(PTR) " 3b,8b\n"
++ STR(PTR) " 4b,8b\n"
++ STR(PTR) " 5b,8b\n"
++ STR(PTR) " 6b,8b\n"
++ STR(PTR) " 7b,8b\n"
++ STR(PTR) " 0b,8b\n"
+ " .previous\n"
+ " .set pop\n"
+ : "+&r"(rt), "=&r"(rs),
+@@ -1999,7 +2000,7 @@ fpu_emul:
+ "j 2b\n"
+ ".previous\n"
+ ".section __ex_table,\"a\"\n"
+- ".word 1b, 3b\n"
++ STR(PTR) " 1b,3b\n"
+ ".previous\n"
+ : "=&r"(res), "+&r"(err)
+ : "r"(vaddr), "i"(SIGSEGV)
+@@ -2057,7 +2058,7 @@ fpu_emul:
+ "j 2b\n"
+ ".previous\n"
+ ".section __ex_table,\"a\"\n"
+- ".word 1b, 3b\n"
++ STR(PTR) " 1b,3b\n"
+ ".previous\n"
+ : "+&r"(res), "+&r"(err)
+ : "r"(vaddr), "i"(SIGSEGV));
+@@ -2118,7 +2119,7 @@ fpu_emul:
+ "j 2b\n"
+ ".previous\n"
+ ".section __ex_table,\"a\"\n"
+- ".word 1b, 3b\n"
++ STR(PTR) " 1b,3b\n"
+ ".previous\n"
+ : "=&r"(res), "+&r"(err)
+ : "r"(vaddr), "i"(SIGSEGV)
+@@ -2181,7 +2182,7 @@ fpu_emul:
+ "j 2b\n"
+ ".previous\n"
+ ".section __ex_table,\"a\"\n"
+- ".word 1b, 3b\n"
++ STR(PTR) " 1b,3b\n"
+ ".previous\n"
+ : "+&r"(res), "+&r"(err)
+ : "r"(vaddr), "i"(SIGSEGV));
+diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
+index f2975d4d1e44..89847bee2b53 100644
+--- a/arch/mips/kernel/process.c
++++ b/arch/mips/kernel/process.c
+@@ -457,7 +457,7 @@ unsigned long notrace unwind_stack_by_address(unsigned long stack_page,
+ *sp + sizeof(*regs) <= stack_page + THREAD_SIZE - 32) {
+ regs = (struct pt_regs *)*sp;
+ pc = regs->cp0_epc;
+- if (__kernel_text_address(pc)) {
++ if (!user_mode(regs) && __kernel_text_address(pc)) {
+ *sp = regs->regs[29];
+ *ra = regs->regs[31];
+ return pc;
+@@ -603,6 +603,9 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
+ if (!(value & PR_FP_MODE_FR) && cpu_has_fpu && cpu_has_mips_r6)
+ return -EOPNOTSUPP;
+
++ /* Proceed with the mode switch */
++ preempt_disable();
++
+ /* Save FP & vector context, then disable FPU & MSA */
+ if (task->signal == current->signal)
+ lose_fpu(1);
+@@ -661,6 +664,7 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
+
+ /* Allow threads to use FP again */
+ atomic_set(&task->mm->context.fp_mode_switching, 0);
++ preempt_enable();
+
+ return 0;
+ }
+diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
+index e933a309f2ea..f7968b5149b0 100644
+--- a/arch/mips/kernel/ptrace.c
++++ b/arch/mips/kernel/ptrace.c
+@@ -56,8 +56,7 @@ static void init_fp_ctx(struct task_struct *target)
+ /* Begin with data registers set to all 1s... */
+ memset(&target->thread.fpu.fpr, ~0, sizeof(target->thread.fpu.fpr));
+
+- /* ...and FCSR zeroed */
+- target->thread.fpu.fcr31 = 0;
++ /* FCSR has been preset by `mips_set_personality_nan'. */
+
+ /*
+ * Record that the target has "used" math, such that the context
+@@ -79,6 +78,22 @@ void ptrace_disable(struct task_struct *child)
+ }
+
+ /*
++ * Poke at FCSR according to its mask. Don't set the cause bits as
++ * this is currently not handled correctly in FP context restoration
++ * and will cause an oops if a corresponding enable bit is set.
++ */
++static void ptrace_setfcr31(struct task_struct *child, u32 value)
++{
++ u32 fcr31;
++ u32 mask;
++
++ value &= ~FPU_CSR_ALL_X;
++ fcr31 = child->thread.fpu.fcr31;
++ mask = boot_cpu_data.fpu_msk31;
++ child->thread.fpu.fcr31 = (value & ~mask) | (fcr31 & mask);
++}
++
++/*
+ * Read a general register set. We always use the 64-bit format, even
+ * for 32-bit kernels and for 32-bit processes on a 64-bit kernel.
+ * Registers are sign extended to fill the available space.
+@@ -158,9 +173,7 @@ int ptrace_setfpregs(struct task_struct *child, __u32 __user *data)
+ {
+ union fpureg *fregs;
+ u64 fpr_val;
+- u32 fcr31;
+ u32 value;
+- u32 mask;
+ int i;
+
+ if (!access_ok(VERIFY_READ, data, 33 * 8))
+@@ -175,9 +188,7 @@ int ptrace_setfpregs(struct task_struct *child, __u32 __user *data)
+ }
+
+ __get_user(value, data + 64);
+- fcr31 = child->thread.fpu.fcr31;
+- mask = boot_cpu_data.fpu_msk31;
+- child->thread.fpu.fcr31 = (value & ~mask) | (fcr31 & mask);
++ ptrace_setfcr31(child, value);
+
+ /* FIR may not be written. */
+
+@@ -720,7 +731,7 @@ long arch_ptrace(struct task_struct *child, long request,
+ break;
+ #endif
+ case FPC_CSR:
+- child->thread.fpu.fcr31 = data & ~FPU_CSR_ALL_X;
++ ptrace_setfcr31(child, data);
+ break;
+ case DSP_BASE ... DSP_BASE + 5: {
+ dspreg_t *dregs;
+diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
+index 54923d6b7e16..74403953e407 100644
+--- a/arch/mips/kernel/traps.c
++++ b/arch/mips/kernel/traps.c
+@@ -143,7 +143,7 @@ static void show_backtrace(struct task_struct *task, const struct pt_regs *regs)
+ if (!task)
+ task = current;
+
+- if (raw_show_trace || !__kernel_text_address(pc)) {
++ if (raw_show_trace || user_mode(regs) || !__kernel_text_address(pc)) {
+ show_raw_backtrace(sp);
+ return;
+ }
+@@ -1228,7 +1228,7 @@ static int enable_restore_fp_context(int msa)
+ err = init_fpu();
+ if (msa && !err) {
+ enable_msa();
+- _init_msa_upper();
++ init_msa_upper();
+ set_thread_flag(TIF_USEDMSA);
+ set_thread_flag(TIF_MSA_CTX_LIVE);
+ }
+@@ -1291,7 +1291,7 @@ static int enable_restore_fp_context(int msa)
+ */
+ prior_msa = test_and_set_thread_flag(TIF_MSA_CTX_LIVE);
+ if (!prior_msa && was_fpu_owner) {
+- _init_msa_upper();
++ init_msa_upper();
+
+ goto out;
+ }
+@@ -1308,7 +1308,7 @@ static int enable_restore_fp_context(int msa)
+ * of each vector register such that it cannot see data left
+ * behind by another task.
+ */
+- _init_msa_upper();
++ init_msa_upper();
+ } else {
+ /* We need to restore the vector context. */
+ restore_msa(current);
+diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
+index 41b1b090f56f..dc10c77b7500 100644
+--- a/arch/mips/kvm/emulate.c
++++ b/arch/mips/kvm/emulate.c
+@@ -302,12 +302,31 @@ static inline ktime_t kvm_mips_count_time(struct kvm_vcpu *vcpu)
+ */
+ static uint32_t kvm_mips_read_count_running(struct kvm_vcpu *vcpu, ktime_t now)
+ {
+- ktime_t expires;
++ struct mips_coproc *cop0 = vcpu->arch.cop0;
++ ktime_t expires, threshold;
++ uint32_t count, compare;
+ int running;
+
+- /* Is the hrtimer pending? */
++ /* Calculate the biased and scaled guest CP0_Count */
++ count = vcpu->arch.count_bias + kvm_mips_ktime_to_count(vcpu, now);
++ compare = kvm_read_c0_guest_compare(cop0);
++
++ /*
++ * Find whether CP0_Count has reached the closest timer interrupt. If
++ * not, we shouldn't inject it.
++ */
++ if ((int32_t)(count - compare) < 0)
++ return count;
++
++ /*
++ * The CP0_Count we're going to return has already reached the closest
++ * timer interrupt. Quickly check if it really is a new interrupt by
++ * looking at whether the interval until the hrtimer expiry time is
++ * less than 1/4 of the timer period.
++ */
+ expires = hrtimer_get_expires(&vcpu->arch.comparecount_timer);
+- if (ktime_compare(now, expires) >= 0) {
++ threshold = ktime_add_ns(now, vcpu->arch.count_period / 4);
++ if (ktime_before(expires, threshold)) {
+ /*
+ * Cancel it while we handle it so there's no chance of
+ * interference with the timeout handler.
+@@ -329,8 +348,7 @@ static uint32_t kvm_mips_read_count_running(struct kvm_vcpu *vcpu, ktime_t now)
+ }
+ }
+
+- /* Return the biased and scaled guest CP0_Count */
+- return vcpu->arch.count_bias + kvm_mips_ktime_to_count(vcpu, now);
++ return count;
+ }
+
+ /**
+@@ -420,32 +438,6 @@ static void kvm_mips_resume_hrtimer(struct kvm_vcpu *vcpu,
+ }
+
+ /**
+- * kvm_mips_update_hrtimer() - Update next expiry time of hrtimer.
+- * @vcpu: Virtual CPU.
+- *
+- * Recalculates and updates the expiry time of the hrtimer. This can be used
+- * after timer parameters have been altered which do not depend on the time that
+- * the change occurs (in those cases kvm_mips_freeze_hrtimer() and
+- * kvm_mips_resume_hrtimer() are used directly).
+- *
+- * It is guaranteed that no timer interrupts will be lost in the process.
+- *
+- * Assumes !kvm_mips_count_disabled(@vcpu) (guest CP0_Count timer is running).
+- */
+-static void kvm_mips_update_hrtimer(struct kvm_vcpu *vcpu)
+-{
+- ktime_t now;
+- uint32_t count;
+-
+- /*
+- * freeze_hrtimer takes care of a timer interrupts <= count, and
+- * resume_hrtimer the hrtimer takes care of a timer interrupts > count.
+- */
+- now = kvm_mips_freeze_hrtimer(vcpu, &count);
+- kvm_mips_resume_hrtimer(vcpu, now, count);
+-}
+-
+-/**
+ * kvm_mips_write_count() - Modify the count and update timer.
+ * @vcpu: Virtual CPU.
+ * @count: Guest CP0_Count value to set.
+@@ -540,23 +532,42 @@ int kvm_mips_set_count_hz(struct kvm_vcpu *vcpu, s64 count_hz)
+ * kvm_mips_write_compare() - Modify compare and update timer.
+ * @vcpu: Virtual CPU.
+ * @compare: New CP0_Compare value.
++ * @ack: Whether to acknowledge timer interrupt.
+ *
+ * Update CP0_Compare to a new value and update the timeout.
++ * If @ack, atomically acknowledge any pending timer interrupt, otherwise ensure
++ * any pending timer interrupt is preserved.
+ */
+-void kvm_mips_write_compare(struct kvm_vcpu *vcpu, uint32_t compare)
++void kvm_mips_write_compare(struct kvm_vcpu *vcpu, uint32_t compare, bool ack)
+ {
+ struct mips_coproc *cop0 = vcpu->arch.cop0;
++ int dc;
++ u32 old_compare = kvm_read_c0_guest_compare(cop0);
++ ktime_t now;
++ uint32_t count;
+
+ /* if unchanged, must just be an ack */
+- if (kvm_read_c0_guest_compare(cop0) == compare)
++ if (old_compare == compare) {
++ if (!ack)
++ return;
++ kvm_mips_callbacks->dequeue_timer_int(vcpu);
++ kvm_write_c0_guest_compare(cop0, compare);
+ return;
++ }
++
++ /* freeze_hrtimer() takes care of timer interrupts <= count */
++ dc = kvm_mips_count_disabled(vcpu);
++ if (!dc)
++ now = kvm_mips_freeze_hrtimer(vcpu, &count);
++
++ if (ack)
++ kvm_mips_callbacks->dequeue_timer_int(vcpu);
+
+- /* Update compare */
+ kvm_write_c0_guest_compare(cop0, compare);
+
+- /* Update timeout if count enabled */
+- if (!kvm_mips_count_disabled(vcpu))
+- kvm_mips_update_hrtimer(vcpu);
++ /* resume_hrtimer() takes care of timer interrupts > count */
++ if (!dc)
++ kvm_mips_resume_hrtimer(vcpu, now, count);
+ }
+
+ /**
+@@ -1095,9 +1106,9 @@ enum emulation_result kvm_mips_emulate_CP0(uint32_t inst, uint32_t *opc,
+
+ /* If we are writing to COMPARE */
+ /* Clear pending timer interrupt, if any */
+- kvm_mips_callbacks->dequeue_timer_int(vcpu);
+ kvm_mips_write_compare(vcpu,
+- vcpu->arch.gprs[rt]);
++ vcpu->arch.gprs[rt],
++ true);
+ } else if ((rd == MIPS_CP0_STATUS) && (sel == 0)) {
+ unsigned int old_val, val, change;
+
+diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
+index d836ed5b0bc7..307cc4c98bdd 100644
+--- a/arch/mips/kvm/trap_emul.c
++++ b/arch/mips/kvm/trap_emul.c
+@@ -547,7 +547,7 @@ static int kvm_trap_emul_set_one_reg(struct kvm_vcpu *vcpu,
+ kvm_mips_write_count(vcpu, v);
+ break;
+ case KVM_REG_MIPS_CP0_COMPARE:
+- kvm_mips_write_compare(vcpu, v);
++ kvm_mips_write_compare(vcpu, v, false);
+ break;
+ case KVM_REG_MIPS_CP0_CAUSE:
+ /*
+diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
+index 2b95e34fa9e8..81f645973eb3 100644
+--- a/arch/mips/math-emu/cp1emu.c
++++ b/arch/mips/math-emu/cp1emu.c
+@@ -445,9 +445,11 @@ static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
+ case spec_op:
+ switch (insn.r_format.func) {
+ case jalr_op:
+- regs->regs[insn.r_format.rd] =
+- regs->cp0_epc + dec_insn.pc_inc +
+- dec_insn.next_pc_inc;
++ if (insn.r_format.rd != 0) {
++ regs->regs[insn.r_format.rd] =
++ regs->cp0_epc + dec_insn.pc_inc +
++ dec_insn.next_pc_inc;
++ }
+ /* Fall through */
+ case jr_op:
+ /* For R6, JR already emulated in jalr_op */
+diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
+index 77d96db8253c..8a648e20b521 100644
+--- a/arch/mips/mm/cache.c
++++ b/arch/mips/mm/cache.c
+@@ -16,6 +16,7 @@
+ #include <linux/mm.h>
+
+ #include <asm/cacheflush.h>
++#include <asm/highmem.h>
+ #include <asm/processor.h>
+ #include <asm/cpu.h>
+ #include <asm/cpu-features.h>
+@@ -83,8 +84,6 @@ void __flush_dcache_page(struct page *page)
+ struct address_space *mapping = page_mapping(page);
+ unsigned long addr;
+
+- if (PageHighMem(page))
+- return;
+ if (mapping && !mapping_mapped(mapping)) {
+ SetPageDcacheDirty(page);
+ return;
+@@ -95,8 +94,15 @@ void __flush_dcache_page(struct page *page)
+ * case is for exec env/arg pages and those are %99 certainly going to
+ * get faulted into the tlb (and thus flushed) anyways.
+ */
+- addr = (unsigned long) page_address(page);
++ if (PageHighMem(page))
++ addr = (unsigned long)kmap_atomic(page);
++ else
++ addr = (unsigned long)page_address(page);
++
+ flush_data_cache_page(addr);
++
++ if (PageHighMem(page))
++ __kunmap_atomic((void *)addr);
+ }
+
+ EXPORT_SYMBOL(__flush_dcache_page);
+@@ -119,33 +125,28 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr)
+
+ EXPORT_SYMBOL(__flush_anon_page);
+
+-void __flush_icache_page(struct vm_area_struct *vma, struct page *page)
+-{
+- unsigned long addr;
+-
+- if (PageHighMem(page))
+- return;
+-
+- addr = (unsigned long) page_address(page);
+- flush_data_cache_page(addr);
+-}
+-EXPORT_SYMBOL_GPL(__flush_icache_page);
+-
+-void __update_cache(struct vm_area_struct *vma, unsigned long address,
+- pte_t pte)
++void __update_cache(unsigned long address, pte_t pte)
+ {
+ struct page *page;
+ unsigned long pfn, addr;
+- int exec = (vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc;
++ int exec = !pte_no_exec(pte) && !cpu_has_ic_fills_f_dc;
+
+ pfn = pte_pfn(pte);
+ if (unlikely(!pfn_valid(pfn)))
+ return;
+ page = pfn_to_page(pfn);
+- if (page_mapping(page) && Page_dcache_dirty(page)) {
+- addr = (unsigned long) page_address(page);
++ if (Page_dcache_dirty(page)) {
++ if (PageHighMem(page))
++ addr = (unsigned long)kmap_atomic(page);
++ else
++ addr = (unsigned long)page_address(page);
++
+ if (exec || pages_do_alias(addr, address & PAGE_MASK))
+ flush_data_cache_page(addr);
++
++ if (PageHighMem(page))
++ __kunmap_atomic((void *)addr);
++
+ ClearPageDcacheDirty(page);
+ }
+ }
+diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
+index cb565ad0a5b6..9a4e71261fca 100644
+--- a/arch/powerpc/kernel/eeh.c
++++ b/arch/powerpc/kernel/eeh.c
+@@ -1073,7 +1073,7 @@ void eeh_add_device_early(struct pci_dn *pdn)
+ struct pci_controller *phb;
+ struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
+
+- if (!edev || !eeh_enabled())
++ if (!edev)
+ return;
+
+ if (!eeh_has_flag(EEH_PROBE_MODE_DEVTREE))
+diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
+index 90cc67904dc6..6d04c9efb496 100644
+--- a/arch/powerpc/kernel/eeh_driver.c
++++ b/arch/powerpc/kernel/eeh_driver.c
+@@ -166,6 +166,16 @@ static void *eeh_dev_save_state(void *data, void *userdata)
+ if (!edev)
+ return NULL;
+
++ /*
++ * We cannot access the config space on some adapters.
++ * Otherwise, it will cause fenced PHB. We don't save
++ * the content in their config space and will restore
++ * from the initial config space saved when the EEH
++ * device is created.
++ */
++ if (edev->pe && (edev->pe->state & EEH_PE_CFG_RESTRICTED))
++ return NULL;
++
+ pdev = eeh_dev_to_pci_dev(edev);
+ if (!pdev)
+ return NULL;
+@@ -305,6 +315,19 @@ static void *eeh_dev_restore_state(void *data, void *userdata)
+ if (!edev)
+ return NULL;
+
++ /*
++ * The content in the config space isn't saved because
++ * the blocked config space on some adapters. We have
++ * to restore the initial saved config space when the
++ * EEH device is created.
++ */
++ if (edev->pe && (edev->pe->state & EEH_PE_CFG_RESTRICTED)) {
++ if (list_is_last(&edev->list, &edev->pe->edevs))
++ eeh_pe_restore_bars(edev->pe);
++
++ return NULL;
++ }
++
+ pdev = eeh_dev_to_pci_dev(edev);
+ if (!pdev)
+ return NULL;
+@@ -502,9 +525,6 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe)
+ /* Save states */
+ eeh_pe_dev_traverse(pe, eeh_dev_save_state, NULL);
+
+- /* Report error */
+- eeh_pe_dev_traverse(pe, eeh_report_error, &result);
+-
+ /* Issue reset */
+ ret = eeh_reset_pe(pe);
+ if (ret) {
+diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
+index 9519e6bdc6d7..7662bfae0493 100644
+--- a/arch/powerpc/kernel/exceptions-64s.S
++++ b/arch/powerpc/kernel/exceptions-64s.S
+@@ -963,11 +963,6 @@ hv_facility_unavailable_relon_trampoline:
+ #endif
+ STD_RELON_EXCEPTION_PSERIES(0x5700, 0x1700, altivec_assist)
+
+- /* Other future vectors */
+- .align 7
+- .globl __end_interrupts
+-__end_interrupts:
+-
+ .align 7
+ system_call_entry_direct:
+ #if defined(CONFIG_RELOCATABLE)
+@@ -1261,6 +1256,17 @@ __end_handlers:
+ STD_RELON_EXCEPTION_PSERIES_OOL(0xf60, facility_unavailable)
+ STD_RELON_EXCEPTION_HV_OOL(0xf80, hv_facility_unavailable)
+
++ /*
++ * The __end_interrupts marker must be past the out-of-line (OOL)
++ * handlers, so that they are copied to real address 0x100 when running
++ * a relocatable kernel. This ensures they can be reached from the short
++ * trampoline handlers (like 0x4f00, 0x4f20, etc.) which branch
++ * directly, without using LOAD_HANDLER().
++ */
++ .align 7
++ .globl __end_interrupts
++__end_interrupts:
++
+ #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
+ /*
+ * Data area reserved for FWNMI option.
+diff --git a/arch/x86/kernel/cpu/perf_event_intel_pt.c b/arch/x86/kernel/cpu/perf_event_intel_pt.c
+index 123ff1bb2f60..cb6baa2252b7 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel_pt.c
++++ b/arch/x86/kernel/cpu/perf_event_intel_pt.c
+@@ -633,6 +633,7 @@ static int pt_buffer_reset_markers(struct pt_buffer *buf,
+
+ /* clear STOP and INT from current entry */
+ buf->topa_index[buf->stop_pos]->stop = 0;
++ buf->topa_index[buf->stop_pos]->intr = 0;
+ buf->topa_index[buf->intr_pos]->intr = 0;
+
+ /* how many pages till the STOP marker */
+@@ -657,6 +658,7 @@ static int pt_buffer_reset_markers(struct pt_buffer *buf,
+ buf->intr_pos = idx;
+
+ buf->topa_index[buf->stop_pos]->stop = 1;
++ buf->topa_index[buf->stop_pos]->intr = 1;
+ buf->topa_index[buf->intr_pos]->intr = 1;
+
+ return 0;
+diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
+index d22f4b5bbc04..6b8b1073d9ec 100644
+--- a/arch/x86/pci/xen.c
++++ b/arch/x86/pci/xen.c
+@@ -488,8 +488,11 @@ int __init pci_xen_initial_domain(void)
+ #endif
+ __acpi_register_gsi = acpi_register_gsi_xen;
+ __acpi_unregister_gsi = NULL;
+- /* Pre-allocate legacy irqs */
+- for (irq = 0; irq < nr_legacy_irqs(); irq++) {
++ /*
++ * Pre-allocate the legacy IRQs. Use NR_LEGACY_IRQS here
++ * because we don't have a PIC and thus nr_legacy_irqs() is zero.
++ */
++ for (irq = 0; irq < NR_IRQS_LEGACY; irq++) {
+ int trigger, polarity;
+
+ if (acpi_get_override_irq(irq, &trigger, &polarity) == -1)
+diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
+index 98f5316aad72..de039384ae7e 100644
+--- a/drivers/acpi/osl.c
++++ b/drivers/acpi/osl.c
+@@ -138,7 +138,7 @@ static struct osi_linux {
+ unsigned int enable:1;
+ unsigned int dmi:1;
+ unsigned int cmdline:1;
+- unsigned int default_disabling:1;
++ u8 default_disabling;
+ } osi_linux = {0, 0, 0, 0};
+
+ static u32 acpi_osi_handler(acpi_string interface, u32 supported)
+@@ -1452,10 +1452,13 @@ void __init acpi_osi_setup(char *str)
+ if (*str == '!') {
+ str++;
+ if (*str == '\0') {
+- osi_linux.default_disabling = 1;
++ /* Do not override acpi_osi=!* */
++ if (!osi_linux.default_disabling)
++ osi_linux.default_disabling =
++ ACPI_DISABLE_ALL_VENDOR_STRINGS;
+ return;
+ } else if (*str == '*') {
+- acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
++ osi_linux.default_disabling = ACPI_DISABLE_ALL_STRINGS;
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ osi->enable = false;
+@@ -1528,10 +1531,13 @@ static void __init acpi_osi_setup_late(void)
+ acpi_status status;
+
+ if (osi_linux.default_disabling) {
+- status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
++ status = acpi_update_interfaces(osi_linux.default_disabling);
+
+ if (ACPI_SUCCESS(status))
+- printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
++ printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors%s\n",
++ osi_linux.default_disabling ==
++ ACPI_DISABLE_ALL_STRINGS ?
++ " and feature groups" : "");
+ }
+
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
+index 3d874eca7104..9f198da6b19f 100644
+--- a/drivers/base/power/main.c
++++ b/drivers/base/power/main.c
+@@ -1259,14 +1259,15 @@ int dpm_suspend_late(pm_message_t state)
+ error = device_suspend_late(dev);
+
+ mutex_lock(&dpm_list_mtx);
++ if (!list_empty(&dev->power.entry))
++ list_move(&dev->power.entry, &dpm_late_early_list);
++
+ if (error) {
+ pm_dev_err(dev, state, " late", error);
+ dpm_save_failed_dev(dev_name(dev));
+ put_device(dev);
+ break;
+ }
+- if (!list_empty(&dev->power.entry))
+- list_move(&dev->power.entry, &dpm_late_early_list);
+ put_device(dev);
+
+ if (async_error)
+diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
+index 5070c4fe8542..5b06452e2af2 100644
+--- a/drivers/base/power/runtime.c
++++ b/drivers/base/power/runtime.c
+@@ -1462,11 +1462,16 @@ int pm_runtime_force_resume(struct device *dev)
+ goto out;
+ }
+
+- ret = callback(dev);
++ ret = pm_runtime_set_active(dev);
+ if (ret)
+ goto out;
+
+- pm_runtime_set_active(dev);
++ ret = callback(dev);
++ if (ret) {
++ pm_runtime_set_suspended(dev);
++ goto out;
++ }
++
+ pm_runtime_mark_last_busy(dev);
+ out:
+ pm_runtime_enable(dev);
+diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
+index 6653473f2757..eaa646dfa783 100644
+--- a/drivers/bluetooth/hci_vhci.c
++++ b/drivers/bluetooth/hci_vhci.c
+@@ -50,6 +50,7 @@ struct vhci_data {
+ wait_queue_head_t read_wait;
+ struct sk_buff_head readq;
+
++ struct mutex open_mutex;
+ struct delayed_work open_timeout;
+ };
+
+@@ -95,12 +96,15 @@ static int vhci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+ return 0;
+ }
+
+-static int vhci_create_device(struct vhci_data *data, __u8 opcode)
++static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
+ {
+ struct hci_dev *hdev;
+ struct sk_buff *skb;
+ __u8 dev_type;
+
++ if (data->hdev)
++ return -EBADFD;
++
+ /* bits 0-1 are dev_type (BR/EDR or AMP) */
+ dev_type = opcode & 0x03;
+
+@@ -159,6 +163,17 @@ static int vhci_create_device(struct vhci_data *data, __u8 opcode)
+ return 0;
+ }
+
++static int vhci_create_device(struct vhci_data *data, __u8 opcode)
++{
++ int err;
++
++ mutex_lock(&data->open_mutex);
++ err = __vhci_create_device(data, opcode);
++ mutex_unlock(&data->open_mutex);
++
++ return err;
++}
++
+ static inline ssize_t vhci_get_user(struct vhci_data *data,
+ struct iov_iter *from)
+ {
+@@ -197,11 +212,6 @@ static inline ssize_t vhci_get_user(struct vhci_data *data,
+ break;
+
+ case HCI_VENDOR_PKT:
+- if (data->hdev) {
+- kfree_skb(skb);
+- return -EBADFD;
+- }
+-
+ cancel_delayed_work_sync(&data->open_timeout);
+
+ opcode = *((__u8 *) skb->data);
+@@ -328,6 +338,7 @@ static int vhci_open(struct inode *inode, struct file *file)
+ skb_queue_head_init(&data->readq);
+ init_waitqueue_head(&data->read_wait);
+
++ mutex_init(&data->open_mutex);
+ INIT_DELAYED_WORK(&data->open_timeout, vhci_open_timeout);
+
+ file->private_data = data;
+@@ -341,15 +352,18 @@ static int vhci_open(struct inode *inode, struct file *file)
+ static int vhci_release(struct inode *inode, struct file *file)
+ {
+ struct vhci_data *data = file->private_data;
+- struct hci_dev *hdev = data->hdev;
++ struct hci_dev *hdev;
+
+ cancel_delayed_work_sync(&data->open_timeout);
+
++ hdev = data->hdev;
++
+ if (hdev) {
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+ }
+
++ skb_queue_purge(&data->readq);
+ file->private_data = NULL;
+ kfree(data);
+
+diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c
+index 7936dce4b878..8a31e17d0ee9 100644
+--- a/drivers/cpuidle/coupled.c
++++ b/drivers/cpuidle/coupled.c
+@@ -176,14 +176,12 @@ void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a)
+
+ /**
+ * cpuidle_state_is_coupled - check if a state is part of a coupled set
+- * @dev: struct cpuidle_device for the current cpu
+ * @drv: struct cpuidle_driver for the platform
+ * @state: index of the target state in drv->states
+ *
+ * Returns true if the target state is coupled with cpus besides this one
+ */
+-bool cpuidle_state_is_coupled(struct cpuidle_device *dev,
+- struct cpuidle_driver *drv, int state)
++bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state)
+ {
+ return drv->states[state].flags & CPUIDLE_FLAG_COUPLED;
+ }
+diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
+index 61c417b9e53f..81f60351aaf3 100644
+--- a/drivers/cpuidle/cpuidle.c
++++ b/drivers/cpuidle/cpuidle.c
+@@ -185,7 +185,7 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
+ tick_broadcast_exit();
+ }
+
+- if (!cpuidle_state_is_coupled(dev, drv, entered_state))
++ if (!cpuidle_state_is_coupled(drv, index))
+ local_irq_enable();
+
+ diff = ktime_to_us(ktime_sub(time_end, time_start));
+@@ -234,7 +234,7 @@ int cpuidle_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
+ int cpuidle_enter(struct cpuidle_driver *drv, struct cpuidle_device *dev,
+ int index)
+ {
+- if (cpuidle_state_is_coupled(dev, drv, index))
++ if (cpuidle_state_is_coupled(drv, index))
+ return cpuidle_enter_state_coupled(dev, drv, index);
+ return cpuidle_enter_state(dev, drv, index);
+ }
+@@ -404,6 +404,8 @@ static void __cpuidle_unregister_device(struct cpuidle_device *dev)
+ list_del(&dev->device_list);
+ per_cpu(cpuidle_devices, dev->cpu) = NULL;
+ module_put(drv->owner);
++
++ dev->registered = 0;
+ }
+
+ static void __cpuidle_device_init(struct cpuidle_device *dev)
+diff --git a/drivers/cpuidle/cpuidle.h b/drivers/cpuidle/cpuidle.h
+index ee97e9672ecf..178c5ad3d568 100644
+--- a/drivers/cpuidle/cpuidle.h
++++ b/drivers/cpuidle/cpuidle.h
+@@ -34,15 +34,14 @@ extern int cpuidle_add_sysfs(struct cpuidle_device *dev);
+ extern void cpuidle_remove_sysfs(struct cpuidle_device *dev);
+
+ #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
+-bool cpuidle_state_is_coupled(struct cpuidle_device *dev,
+- struct cpuidle_driver *drv, int state);
++bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state);
+ int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int next_state);
+ int cpuidle_coupled_register_device(struct cpuidle_device *dev);
+ void cpuidle_coupled_unregister_device(struct cpuidle_device *dev);
+ #else
+-static inline bool cpuidle_state_is_coupled(struct cpuidle_device *dev,
+- struct cpuidle_driver *drv, int state)
++static inline
++bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state)
+ {
+ return false;
+ }
+diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c
+index b8b5d47acd7a..9bfd4100baa8 100644
+--- a/drivers/crypto/caam/jr.c
++++ b/drivers/crypto/caam/jr.c
+@@ -241,7 +241,7 @@ static void caam_jr_dequeue(unsigned long devarg)
+ struct device *caam_jr_alloc(void)
+ {
+ struct caam_drv_private_jr *jrpriv, *min_jrpriv = NULL;
+- struct device *dev = NULL;
++ struct device *dev = ERR_PTR(-ENODEV);
+ int min_tfm_cnt = INT_MAX;
+ int tfm_cnt;
+
+diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
+index f214a8755827..36d936fb259e 100644
+--- a/drivers/crypto/s5p-sss.c
++++ b/drivers/crypto/s5p-sss.c
+@@ -149,7 +149,6 @@
+
+ /**
+ * struct samsung_aes_variant - platform specific SSS driver data
+- * @has_hash_irq: true if SSS module uses hash interrupt, false otherwise
+ * @aes_offset: AES register offset from SSS module's base.
+ *
+ * Specifies platform specific configuration of SSS module.
+@@ -157,7 +156,6 @@
+ * expansion of its usage.
+ */
+ struct samsung_aes_variant {
+- bool has_hash_irq;
+ unsigned int aes_offset;
+ };
+
+@@ -178,7 +176,6 @@ struct s5p_aes_dev {
+ struct clk *clk;
+ void __iomem *ioaddr;
+ void __iomem *aes_ioaddr;
+- int irq_hash;
+ int irq_fc;
+
+ struct ablkcipher_request *req;
+@@ -197,12 +194,10 @@ struct s5p_aes_dev {
+ static struct s5p_aes_dev *s5p_dev;
+
+ static const struct samsung_aes_variant s5p_aes_data = {
+- .has_hash_irq = true,
+ .aes_offset = 0x4000,
+ };
+
+ static const struct samsung_aes_variant exynos_aes_data = {
+- .has_hash_irq = false,
+ .aes_offset = 0x200,
+ };
+
+@@ -313,43 +308,55 @@ static int s5p_set_indata(struct s5p_aes_dev *dev, struct scatterlist *sg)
+ return err;
+ }
+
+-static void s5p_aes_tx(struct s5p_aes_dev *dev)
++/*
++ * Returns true if new transmitting (output) data is ready and its
++ * address+length have to be written to device (by calling
++ * s5p_set_dma_outdata()). False otherwise.
++ */
++static bool s5p_aes_tx(struct s5p_aes_dev *dev)
+ {
+ int err = 0;
++ bool ret = false;
+
+ s5p_unset_outdata(dev);
+
+ if (!sg_is_last(dev->sg_dst)) {
+ err = s5p_set_outdata(dev, sg_next(dev->sg_dst));
+- if (err) {
++ if (err)
+ s5p_aes_complete(dev, err);
+- return;
+- }
+-
+- s5p_set_dma_outdata(dev, dev->sg_dst);
++ else
++ ret = true;
+ } else {
+ s5p_aes_complete(dev, err);
+
+ dev->busy = true;
+ tasklet_schedule(&dev->tasklet);
+ }
++
++ return ret;
+ }
+
+-static void s5p_aes_rx(struct s5p_aes_dev *dev)
++/*
++ * Returns true if new receiving (input) data is ready and its
++ * address+length have to be written to device (by calling
++ * s5p_set_dma_indata()). False otherwise.
++ */
++static bool s5p_aes_rx(struct s5p_aes_dev *dev)
+ {
+ int err;
++ bool ret = false;
+
+ s5p_unset_indata(dev);
+
+ if (!sg_is_last(dev->sg_src)) {
+ err = s5p_set_indata(dev, sg_next(dev->sg_src));
+- if (err) {
++ if (err)
+ s5p_aes_complete(dev, err);
+- return;
+- }
+-
+- s5p_set_dma_indata(dev, dev->sg_src);
++ else
++ ret = true;
+ }
++
++ return ret;
+ }
+
+ static irqreturn_t s5p_aes_interrupt(int irq, void *dev_id)
+@@ -358,18 +365,29 @@ static irqreturn_t s5p_aes_interrupt(int irq, void *dev_id)
+ struct s5p_aes_dev *dev = platform_get_drvdata(pdev);
+ uint32_t status;
+ unsigned long flags;
++ bool set_dma_tx = false;
++ bool set_dma_rx = false;
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+- if (irq == dev->irq_fc) {
+- status = SSS_READ(dev, FCINTSTAT);
+- if (status & SSS_FCINTSTAT_BRDMAINT)
+- s5p_aes_rx(dev);
+- if (status & SSS_FCINTSTAT_BTDMAINT)
+- s5p_aes_tx(dev);
+-
+- SSS_WRITE(dev, FCINTPEND, status);
+- }
++ status = SSS_READ(dev, FCINTSTAT);
++ if (status & SSS_FCINTSTAT_BRDMAINT)
++ set_dma_rx = s5p_aes_rx(dev);
++ if (status & SSS_FCINTSTAT_BTDMAINT)
++ set_dma_tx = s5p_aes_tx(dev);
++
++ SSS_WRITE(dev, FCINTPEND, status);
++
++ /*
++ * Writing length of DMA block (either receiving or transmitting)
++ * will start the operation immediately, so this should be done
++ * at the end (even after clearing pending interrupts to not miss the
++ * interrupt).
++ */
++ if (set_dma_tx)
++ s5p_set_dma_outdata(dev, dev->sg_dst);
++ if (set_dma_rx)
++ s5p_set_dma_indata(dev, dev->sg_src);
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+@@ -671,21 +689,6 @@ static int s5p_aes_probe(struct platform_device *pdev)
+ goto err_irq;
+ }
+
+- if (variant->has_hash_irq) {
+- pdata->irq_hash = platform_get_irq(pdev, 1);
+- if (pdata->irq_hash < 0) {
+- err = pdata->irq_hash;
+- dev_warn(dev, "hash interrupt is not available.\n");
+- goto err_irq;
+- }
+- err = devm_request_irq(dev, pdata->irq_hash, s5p_aes_interrupt,
+- IRQF_SHARED, pdev->name, pdev);
+- if (err < 0) {
+- dev_warn(dev, "hash interrupt is not available.\n");
+- goto err_irq;
+- }
+- }
+-
+ pdata->busy = false;
+ pdata->variant = variant;
+ pdata->dev = dev;
+diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
+index cac422916c7a..c8b90b3be349 100644
+--- a/drivers/gpu/drm/drm_fb_helper.c
++++ b/drivers/gpu/drm/drm_fb_helper.c
+@@ -1549,7 +1549,6 @@ static int drm_pick_crtcs(struct drm_fb_helper *fb_helper,
+ int n, int width, int height)
+ {
+ int c, o;
+- struct drm_device *dev = fb_helper->dev;
+ struct drm_connector *connector;
+ const struct drm_connector_helper_funcs *connector_funcs;
+ struct drm_encoder *encoder;
+@@ -1568,7 +1567,7 @@ static int drm_pick_crtcs(struct drm_fb_helper *fb_helper,
+ if (modes[n] == NULL)
+ return best_score;
+
+- crtcs = kzalloc(dev->mode_config.num_connector *
++ crtcs = kzalloc(fb_helper->connector_count *
+ sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL);
+ if (!crtcs)
+ return best_score;
+@@ -1614,7 +1613,7 @@ static int drm_pick_crtcs(struct drm_fb_helper *fb_helper,
+ if (score > best_score) {
+ best_score = score;
+ memcpy(best_crtcs, crtcs,
+- dev->mode_config.num_connector *
++ fb_helper->connector_count *
+ sizeof(struct drm_fb_helper_crtc *));
+ }
+ }
+diff --git a/drivers/gpu/drm/gma500/mdfld_dsi_pkg_sender.c b/drivers/gpu/drm/gma500/mdfld_dsi_pkg_sender.c
+index 6b43ae3ffd73..1616af209bfc 100644
+--- a/drivers/gpu/drm/gma500/mdfld_dsi_pkg_sender.c
++++ b/drivers/gpu/drm/gma500/mdfld_dsi_pkg_sender.c
+@@ -72,7 +72,7 @@ static const char *const dsi_errors[] = {
+ "RX Prot Violation",
+ "HS Generic Write FIFO Full",
+ "LP Generic Write FIFO Full",
+- "Generic Read Data Avail"
++ "Generic Read Data Avail",
+ "Special Packet Sent",
+ "Tearing Effect",
+ };
+diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
+index 4e7e7da2e03b..64783985e392 100644
+--- a/drivers/gpu/drm/i915/intel_fbdev.c
++++ b/drivers/gpu/drm/i915/intel_fbdev.c
+@@ -361,12 +361,12 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
+ uint64_t conn_configured = 0, mask;
+ int pass = 0;
+
+- save_enabled = kcalloc(dev->mode_config.num_connector, sizeof(bool),
++ save_enabled = kcalloc(fb_helper->connector_count, sizeof(bool),
+ GFP_KERNEL);
+ if (!save_enabled)
+ return false;
+
+- memcpy(save_enabled, enabled, dev->mode_config.num_connector);
++ memcpy(save_enabled, enabled, fb_helper->connector_count);
+ mask = (1 << fb_helper->connector_count) - 1;
+ retry:
+ for (i = 0; i < fb_helper->connector_count; i++) {
+@@ -505,7 +505,7 @@ retry:
+ if (fallback) {
+ bail:
+ DRM_DEBUG_KMS("Not using firmware configuration\n");
+- memcpy(enabled, save_enabled, dev->mode_config.num_connector);
++ memcpy(enabled, save_enabled, fb_helper->connector_count);
+ kfree(save_enabled);
+ return false;
+ }
+diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
+index 555b896d2bda..00bc49835e09 100644
+--- a/drivers/gpu/drm/i915/intel_pm.c
++++ b/drivers/gpu/drm/i915/intel_pm.c
+@@ -3574,6 +3574,8 @@ static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc)
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+ hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe));
+
++ memset(active, 0, sizeof(*active));
++
+ active->pipe_enabled = intel_crtc->active;
+
+ if (active->pipe_enabled) {
+diff --git a/drivers/hwmon/ads7828.c b/drivers/hwmon/ads7828.c
+index 6c99ee7bafa3..ee396ff167d9 100644
+--- a/drivers/hwmon/ads7828.c
++++ b/drivers/hwmon/ads7828.c
+@@ -120,6 +120,7 @@ static int ads7828_probe(struct i2c_client *client,
+ unsigned int vref_mv = ADS7828_INT_VREF_MV;
+ bool diff_input = false;
+ bool ext_vref = false;
++ unsigned int regval;
+
+ data = devm_kzalloc(dev, sizeof(struct ads7828_data), GFP_KERNEL);
+ if (!data)
+@@ -154,6 +155,15 @@ static int ads7828_probe(struct i2c_client *client,
+ if (!diff_input)
+ data->cmd_byte |= ADS7828_CMD_SD_SE;
+
++ /*
++ * Datasheet specifies internal reference voltage is disabled by
++ * default. The internal reference voltage needs to be enabled and
++ * voltage needs to settle before getting valid ADC data. So perform a
++ * dummy read to enable the internal reference voltage.
++ */
++ if (!ext_vref)
++ regmap_read(data->regmap, data->cmd_byte, ®val);
++
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ ads7828_groups);
+diff --git a/drivers/input/misc/pwm-beeper.c b/drivers/input/misc/pwm-beeper.c
+index e82edf810d1f..9021725e25e4 100644
+--- a/drivers/input/misc/pwm-beeper.c
++++ b/drivers/input/misc/pwm-beeper.c
+@@ -20,21 +20,40 @@
+ #include <linux/platform_device.h>
+ #include <linux/pwm.h>
+ #include <linux/slab.h>
++#include <linux/workqueue.h>
+
+ struct pwm_beeper {
+ struct input_dev *input;
+ struct pwm_device *pwm;
++ struct work_struct work;
+ unsigned long period;
+ };
+
+ #define HZ_TO_NANOSECONDS(x) (1000000000UL/(x))
+
++static void __pwm_beeper_set(struct pwm_beeper *beeper)
++{
++ unsigned long period = beeper->period;
++
++ if (period) {
++ pwm_config(beeper->pwm, period / 2, period);
++ pwm_enable(beeper->pwm);
++ } else
++ pwm_disable(beeper->pwm);
++}
++
++static void pwm_beeper_work(struct work_struct *work)
++{
++ struct pwm_beeper *beeper =
++ container_of(work, struct pwm_beeper, work);
++
++ __pwm_beeper_set(beeper);
++}
++
+ static int pwm_beeper_event(struct input_dev *input,
+ unsigned int type, unsigned int code, int value)
+ {
+- int ret = 0;
+ struct pwm_beeper *beeper = input_get_drvdata(input);
+- unsigned long period;
+
+ if (type != EV_SND || value < 0)
+ return -EINVAL;
+@@ -49,22 +68,31 @@ static int pwm_beeper_event(struct input_dev *input,
+ return -EINVAL;
+ }
+
+- if (value == 0) {
+- pwm_disable(beeper->pwm);
+- } else {
+- period = HZ_TO_NANOSECONDS(value);
+- ret = pwm_config(beeper->pwm, period / 2, period);
+- if (ret)
+- return ret;
+- ret = pwm_enable(beeper->pwm);
+- if (ret)
+- return ret;
+- beeper->period = period;
+- }
++ if (value == 0)
++ beeper->period = 0;
++ else
++ beeper->period = HZ_TO_NANOSECONDS(value);
++
++ schedule_work(&beeper->work);
+
+ return 0;
+ }
+
++static void pwm_beeper_stop(struct pwm_beeper *beeper)
++{
++ cancel_work_sync(&beeper->work);
++
++ if (beeper->period)
++ pwm_disable(beeper->pwm);
++}
++
++static void pwm_beeper_close(struct input_dev *input)
++{
++ struct pwm_beeper *beeper = input_get_drvdata(input);
++
++ pwm_beeper_stop(beeper);
++}
++
+ static int pwm_beeper_probe(struct platform_device *pdev)
+ {
+ unsigned long pwm_id = (unsigned long)dev_get_platdata(&pdev->dev);
+@@ -87,6 +115,8 @@ static int pwm_beeper_probe(struct platform_device *pdev)
+ goto err_free;
+ }
+
++ INIT_WORK(&beeper->work, pwm_beeper_work);
++
+ beeper->input = input_allocate_device();
+ if (!beeper->input) {
+ dev_err(&pdev->dev, "Failed to allocate input device\n");
+@@ -106,6 +136,7 @@ static int pwm_beeper_probe(struct platform_device *pdev)
+ beeper->input->sndbit[0] = BIT(SND_TONE) | BIT(SND_BELL);
+
+ beeper->input->event = pwm_beeper_event;
++ beeper->input->close = pwm_beeper_close;
+
+ input_set_drvdata(beeper->input, beeper);
+
+@@ -135,7 +166,6 @@ static int pwm_beeper_remove(struct platform_device *pdev)
+
+ input_unregister_device(beeper->input);
+
+- pwm_disable(beeper->pwm);
+ pwm_free(beeper->pwm);
+
+ kfree(beeper);
+@@ -147,8 +177,7 @@ static int __maybe_unused pwm_beeper_suspend(struct device *dev)
+ {
+ struct pwm_beeper *beeper = dev_get_drvdata(dev);
+
+- if (beeper->period)
+- pwm_disable(beeper->pwm);
++ pwm_beeper_stop(beeper);
+
+ return 0;
+ }
+@@ -157,10 +186,8 @@ static int __maybe_unused pwm_beeper_resume(struct device *dev)
+ {
+ struct pwm_beeper *beeper = dev_get_drvdata(dev);
+
+- if (beeper->period) {
+- pwm_config(beeper->pwm, beeper->period / 2, beeper->period);
+- pwm_enable(beeper->pwm);
+- }
++ if (beeper->period)
++ __pwm_beeper_set(beeper);
+
+ return 0;
+ }
+diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
+index 421e29e4cd81..5221450f9b57 100644
+--- a/drivers/input/misc/uinput.c
++++ b/drivers/input/misc/uinput.c
+@@ -895,9 +895,15 @@ static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ }
+
+ #ifdef CONFIG_COMPAT
++
++#define UI_SET_PHYS_COMPAT _IOW(UINPUT_IOCTL_BASE, 108, compat_uptr_t)
++
+ static long uinput_compat_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+ {
++ if (cmd == UI_SET_PHYS_COMPAT)
++ cmd = UI_SET_PHYS;
++
+ return uinput_ioctl_handler(file, cmd, arg, compat_ptr(arg));
+ }
+ #endif
+diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
+index 49875adb6b44..1dbae580e8ca 100644
+--- a/drivers/irqchip/irq-gic-v3.c
++++ b/drivers/irqchip/irq-gic-v3.c
+@@ -353,6 +353,13 @@ static asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs
+ if (irqnr < 16) {
+ gic_write_eoir(irqnr);
+ #ifdef CONFIG_SMP
++ /*
++ * Unlike GICv2, we don't need an smp_rmb() here.
++ * The control dependency from gic_read_iar to
++ * the ISB in gic_write_eoir is enough to ensure
++ * that any shared data read by handle_IPI will
++ * be read after the ACK.
++ */
+ handle_IPI(irqnr, regs);
+ #else
+ WARN_ONCE(true, "Unexpected SGI received!\n");
+@@ -372,6 +379,15 @@ static void __init gic_dist_init(void)
+ writel_relaxed(0, base + GICD_CTLR);
+ gic_dist_wait_for_rwp();
+
++ /*
++ * Configure SPIs as non-secure Group-1. This will only matter
++ * if the GIC only has a single security state. This will not
++ * do the right thing if the kernel is running in secure mode,
++ * but that's not the intended use case anyway.
++ */
++ for (i = 32; i < gic_data.irq_nr; i += 32)
++ writel_relaxed(~0, base + GICD_IGROUPR + i / 8);
++
+ gic_dist_config(base, gic_data.irq_nr, gic_dist_wait_for_rwp);
+
+ /* Enable distributor with ARE, Group1 */
+@@ -475,6 +491,9 @@ static void gic_cpu_init(void)
+
+ rbase = gic_data_rdist_sgi_base();
+
++ /* Configure SGIs/PPIs as non-secure Group-1 */
++ writel_relaxed(~0, rbase + GICR_IGROUPR0);
++
+ gic_cpu_config(rbase, gic_redist_wait_for_rwp);
+
+ /* Give LPIs a spin */
+diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
+index 01999d74bd3a..eb9fb9299ec5 100644
+--- a/drivers/irqchip/irq-gic.c
++++ b/drivers/irqchip/irq-gic.c
+@@ -278,6 +278,14 @@ static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
+ if (irqnr < 16) {
+ writel_relaxed(irqstat, cpu_base + GIC_CPU_EOI);
+ #ifdef CONFIG_SMP
++ /*
++ * Ensure any shared data written by the CPU sending
++ * the IPI is read after we've read the ACK register
++ * on the GIC.
++ *
++ * Pairs with the write barrier in gic_raise_softirq
++ */
++ smp_rmb();
+ handle_IPI(irqnr, regs);
+ #endif
+ continue;
+diff --git a/drivers/mcb/mcb-parse.c b/drivers/mcb/mcb-parse.c
+index 004926955263..b0155b05cddb 100644
+--- a/drivers/mcb/mcb-parse.c
++++ b/drivers/mcb/mcb-parse.c
+@@ -57,7 +57,7 @@ static int chameleon_parse_gdd(struct mcb_bus *bus,
+ mdev->id = GDD_DEV(reg1);
+ mdev->rev = GDD_REV(reg1);
+ mdev->var = GDD_VAR(reg1);
+- mdev->bar = GDD_BAR(reg1);
++ mdev->bar = GDD_BAR(reg2);
+ mdev->group = GDD_GRP(reg2);
+ mdev->inst = GDD_INS(reg2);
+
+diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+index 8085059ce925..4b777be714a4 100644
+--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
++++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+@@ -259,7 +259,8 @@ static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user
+ static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
+ {
+ if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) ||
+- copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format)))
++ copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format)) ||
++ copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved)))
+ return -EFAULT;
+ return __put_v4l2_format32(&kp->format, &up->format);
+ }
+diff --git a/drivers/mfd/intel_quark_i2c_gpio.c b/drivers/mfd/intel_quark_i2c_gpio.c
+index 1ce16037d043..958c13473e8c 100644
+--- a/drivers/mfd/intel_quark_i2c_gpio.c
++++ b/drivers/mfd/intel_quark_i2c_gpio.c
+@@ -90,19 +90,19 @@ static struct resource intel_quark_gpio_res[] = {
+
+ static struct mfd_cell intel_quark_mfd_cells[] = {
+ {
+- .id = MFD_I2C_BAR,
+- .name = "i2c_designware",
+- .num_resources = ARRAY_SIZE(intel_quark_i2c_res),
+- .resources = intel_quark_i2c_res,
+- .ignore_resource_conflicts = true,
+- },
+- {
+ .id = MFD_GPIO_BAR,
+ .name = "gpio-dwapb",
+ .num_resources = ARRAY_SIZE(intel_quark_gpio_res),
+ .resources = intel_quark_gpio_res,
+ .ignore_resource_conflicts = true,
+ },
++ {
++ .id = MFD_I2C_BAR,
++ .name = "i2c_designware",
++ .num_resources = ARRAY_SIZE(intel_quark_i2c_res),
++ .resources = intel_quark_i2c_res,
++ .ignore_resource_conflicts = true,
++ },
+ };
+
+ static const struct pci_device_id intel_quark_mfd_ids[] = {
+@@ -248,12 +248,11 @@ static int intel_quark_mfd_probe(struct pci_dev *pdev,
+
+ dev_set_drvdata(&pdev->dev, quark_mfd);
+
+- ret = intel_quark_i2c_setup(pdev, &intel_quark_mfd_cells[MFD_I2C_BAR]);
++ ret = intel_quark_i2c_setup(pdev, &intel_quark_mfd_cells[1]);
+ if (ret)
+ return ret;
+
+- ret = intel_quark_gpio_setup(pdev,
+- &intel_quark_mfd_cells[MFD_GPIO_BAR]);
++ ret = intel_quark_gpio_setup(pdev, &intel_quark_mfd_cells[0]);
+ if (ret)
+ return ret;
+
+diff --git a/drivers/mfd/omap-usb-tll.c b/drivers/mfd/omap-usb-tll.c
+index b7b3e8ee64f2..c30290f33430 100644
+--- a/drivers/mfd/omap-usb-tll.c
++++ b/drivers/mfd/omap-usb-tll.c
+@@ -269,6 +269,8 @@ static int usbtll_omap_probe(struct platform_device *pdev)
+
+ if (IS_ERR(tll->ch_clk[i]))
+ dev_dbg(dev, "can't get clock : %s\n", clkname);
++ else
++ clk_prepare(tll->ch_clk[i]);
+ }
+
+ pm_runtime_put_sync(dev);
+@@ -301,9 +303,12 @@ static int usbtll_omap_remove(struct platform_device *pdev)
+ tll_dev = NULL;
+ spin_unlock(&tll_lock);
+
+- for (i = 0; i < tll->nch; i++)
+- if (!IS_ERR(tll->ch_clk[i]))
++ for (i = 0; i < tll->nch; i++) {
++ if (!IS_ERR(tll->ch_clk[i])) {
++ clk_unprepare(tll->ch_clk[i]);
+ clk_put(tll->ch_clk[i]);
++ }
++ }
+
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+@@ -420,7 +425,7 @@ int omap_tll_enable(struct usbhs_omap_platform_data *pdata)
+ if (IS_ERR(tll->ch_clk[i]))
+ continue;
+
+- r = clk_prepare_enable(tll->ch_clk[i]);
++ r = clk_enable(tll->ch_clk[i]);
+ if (r) {
+ dev_err(tll_dev,
+ "Error enabling ch %d clock: %d\n", i, r);
+@@ -448,7 +453,7 @@ int omap_tll_disable(struct usbhs_omap_platform_data *pdata)
+ for (i = 0; i < tll->nch; i++) {
+ if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {
+ if (!IS_ERR(tll->ch_clk[i]))
+- clk_disable_unprepare(tll->ch_clk[i]);
++ clk_disable(tll->ch_clk[i]);
+ }
+ }
+
+diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
+index 31d2627d9d4d..3705c7e63521 100644
+--- a/drivers/mmc/card/block.c
++++ b/drivers/mmc/card/block.c
+@@ -2403,11 +2403,12 @@ static const struct mmc_fixup blk_fixups[] =
+ MMC_QUIRK_BLK_NO_CMD23),
+
+ /*
+- * Some Micron MMC cards needs longer data read timeout than
+- * indicated in CSD.
++ * Some MMC cards need longer data read timeout than indicated in CSD.
+ */
+ MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc,
+ MMC_QUIRK_LONG_READ_TIME),
++ MMC_FIXUP("008GE0", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
++ MMC_QUIRK_LONG_READ_TIME),
+
+ /*
+ * On these Samsung MoviNAND parts, performing secure erase or
+diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
+index 588fb7908642..b5d8906ac34f 100644
+--- a/drivers/mmc/core/core.c
++++ b/drivers/mmc/core/core.c
+@@ -831,11 +831,11 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
+ /*
+ * Some cards require longer data read timeout than indicated in CSD.
+ * Address this by setting the read timeout to a "reasonably high"
+- * value. For the cards tested, 300ms has proven enough. If necessary,
++ * value. For the cards tested, 600ms has proven enough. If necessary,
+ * this value can be increased if other problematic cards require this.
+ */
+ if (mmc_card_long_read_time(card) && data->flags & MMC_DATA_READ) {
+- data->timeout_ns = 300000000;
++ data->timeout_ns = 600000000;
+ data->timeout_clks = 0;
+ }
+
+diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
+index f36c76f8b232..3ccc89d4c473 100644
+--- a/drivers/mmc/core/mmc.c
++++ b/drivers/mmc/core/mmc.c
+@@ -330,6 +330,9 @@ static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd)
+ }
+ }
+
++/* Minimum partition switch timeout in milliseconds */
++#define MMC_MIN_PART_SWITCH_TIME 300
++
+ /*
+ * Decode extended CSD.
+ */
+@@ -394,6 +397,10 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
+
+ /* EXT_CSD value is in units of 10ms, but we store in ms */
+ card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
++ /* Some eMMC set the value too low so set a minimum */
++ if (card->ext_csd.part_time &&
++ card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME)
++ card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME;
+
+ /* Sleep / awake timeout in 100ns units */
+ if (sa_shift > 0 && sa_shift <= 0x17)
+diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
+index 22d929fa3371..5d4b8a623a12 100644
+--- a/drivers/mmc/host/sdhci-acpi.c
++++ b/drivers/mmc/host/sdhci-acpi.c
+@@ -203,7 +203,7 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
+ .chip = &sdhci_acpi_chip_int,
+ .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
+ MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
+- MMC_CAP_BUS_WIDTH_TEST | MMC_CAP_WAIT_WHILE_BUSY,
++ MMC_CAP_WAIT_WHILE_BUSY,
+ .caps2 = MMC_CAP2_HC_ERASE_SZ,
+ .flags = SDHCI_ACPI_RUNTIME_PM,
+ .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+@@ -216,7 +216,7 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
+ SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
+ .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD |
+- MMC_CAP_BUS_WIDTH_TEST | MMC_CAP_WAIT_WHILE_BUSY,
++ MMC_CAP_WAIT_WHILE_BUSY,
+ .flags = SDHCI_ACPI_RUNTIME_PM,
+ .pm_caps = MMC_PM_KEEP_POWER,
+ .probe_slot = sdhci_acpi_sdio_probe_slot,
+@@ -228,7 +228,7 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = {
+ .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
+ SDHCI_QUIRK2_STOP_WITH_TC,
+- .caps = MMC_CAP_BUS_WIDTH_TEST | MMC_CAP_WAIT_WHILE_BUSY,
++ .caps = MMC_CAP_WAIT_WHILE_BUSY,
+ .probe_slot = sdhci_acpi_sd_probe_slot,
+ };
+
+diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
+index 51bca035cd83..1c73ba6efdbd 100644
+--- a/drivers/mtd/ubi/eba.c
++++ b/drivers/mtd/ubi/eba.c
+@@ -426,8 +426,25 @@ retry:
+ pnum, vol_id, lnum);
+ err = -EBADMSG;
+ } else {
+- err = -EINVAL;
+- ubi_ro_mode(ubi);
++ /*
++ * Ending up here in the non-Fastmap case
++ * is a clear bug as the VID header had to
++ * be present at scan time to have it referenced.
++ * With fastmap the story is more complicated.
++ * Fastmap has the mapping info without the need
++ * of a full scan. So the LEB could have been
++ * unmapped, Fastmap cannot know this and keeps
++ * the LEB referenced.
++ * This is valid and works as the layer above UBI
++ * has to do bookkeeping about used/referenced
++ * LEBs in any case.
++ */
++ if (ubi->fast_attach) {
++ err = -EBADMSG;
++ } else {
++ err = -EINVAL;
++ ubi_ro_mode(ubi);
++ }
+ }
+ }
+ goto out_free;
+diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
+index 02a6de2f53ee..9f505b0dd292 100644
+--- a/drivers/mtd/ubi/fastmap.c
++++ b/drivers/mtd/ubi/fastmap.c
+@@ -1051,6 +1051,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai,
+ ubi_msg(ubi, "fastmap WL pool size: %d",
+ ubi->fm_wl_pool.max_size);
+ ubi->fm_disabled = 0;
++ ubi->fast_attach = 1;
+
+ ubi_free_vid_hdr(ubi, vh);
+ kfree(ech);
+diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
+index c998212fc680..292a286ba489 100644
+--- a/drivers/mtd/ubi/ubi.h
++++ b/drivers/mtd/ubi/ubi.h
+@@ -462,6 +462,7 @@ struct ubi_debug_info {
+ * @fm_eba_sem: allows ubi_update_fastmap() to block EBA table changes
+ * @fm_work: fastmap work queue
+ * @fm_work_scheduled: non-zero if fastmap work was scheduled
++ * @fast_attach: non-zero if UBI was attached by fastmap
+ *
+ * @used: RB-tree of used physical eraseblocks
+ * @erroneous: RB-tree of erroneous used physical eraseblocks
+@@ -570,6 +571,7 @@ struct ubi_device {
+ size_t fm_size;
+ struct work_struct fm_work;
+ int fm_work_scheduled;
++ int fast_attach;
+
+ /* Wear-leveling sub-system's stuff */
+ struct rb_root used;
+diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
+index 141c2a42d7ed..910c12e2638e 100644
+--- a/drivers/net/can/dev.c
++++ b/drivers/net/can/dev.c
+@@ -696,11 +696,17 @@ int can_change_mtu(struct net_device *dev, int new_mtu)
+ /* allow change of MTU according to the CANFD ability of the device */
+ switch (new_mtu) {
+ case CAN_MTU:
++ /* 'CANFD-only' controllers can not switch to CAN_MTU */
++ if (priv->ctrlmode_static & CAN_CTRLMODE_FD)
++ return -EINVAL;
++
+ priv->ctrlmode &= ~CAN_CTRLMODE_FD;
+ break;
+
+ case CANFD_MTU:
+- if (!(priv->ctrlmode_supported & CAN_CTRLMODE_FD))
++ /* check for potential CANFD ability */
++ if (!(priv->ctrlmode_supported & CAN_CTRLMODE_FD) &&
++ !(priv->ctrlmode_static & CAN_CTRLMODE_FD))
+ return -EINVAL;
+
+ priv->ctrlmode |= CAN_CTRLMODE_FD;
+@@ -782,6 +788,35 @@ static const struct nla_policy can_policy[IFLA_CAN_MAX + 1] = {
+ = { .len = sizeof(struct can_bittiming_const) },
+ };
+
++static int can_validate(struct nlattr *tb[], struct nlattr *data[])
++{
++ bool is_can_fd = false;
++
++ /* Make sure that valid CAN FD configurations always consist of
++ * - nominal/arbitration bittiming
++ * - data bittiming
++ * - control mode with CAN_CTRLMODE_FD set
++ */
++
++ if (data[IFLA_CAN_CTRLMODE]) {
++ struct can_ctrlmode *cm = nla_data(data[IFLA_CAN_CTRLMODE]);
++
++ is_can_fd = cm->flags & cm->mask & CAN_CTRLMODE_FD;
++ }
++
++ if (is_can_fd) {
++ if (!data[IFLA_CAN_BITTIMING] || !data[IFLA_CAN_DATA_BITTIMING])
++ return -EOPNOTSUPP;
++ }
++
++ if (data[IFLA_CAN_DATA_BITTIMING]) {
++ if (!is_can_fd || !data[IFLA_CAN_BITTIMING])
++ return -EOPNOTSUPP;
++ }
++
++ return 0;
++}
++
+ static int can_changelink(struct net_device *dev,
+ struct nlattr *tb[], struct nlattr *data[])
+ {
+@@ -813,19 +848,31 @@ static int can_changelink(struct net_device *dev,
+
+ if (data[IFLA_CAN_CTRLMODE]) {
+ struct can_ctrlmode *cm;
++ u32 ctrlstatic;
++ u32 maskedflags;
+
+ /* Do not allow changing controller mode while running */
+ if (dev->flags & IFF_UP)
+ return -EBUSY;
+ cm = nla_data(data[IFLA_CAN_CTRLMODE]);
++ ctrlstatic = priv->ctrlmode_static;
++ maskedflags = cm->flags & cm->mask;
++
++ /* check whether provided bits are allowed to be passed */
++ if (cm->mask & ~(priv->ctrlmode_supported | ctrlstatic))
++ return -EOPNOTSUPP;
++
++ /* do not check for static fd-non-iso if 'fd' is disabled */
++ if (!(maskedflags & CAN_CTRLMODE_FD))
++ ctrlstatic &= ~CAN_CTRLMODE_FD_NON_ISO;
+
+- /* check whether changed bits are allowed to be modified */
+- if (cm->mask & ~priv->ctrlmode_supported)
++ /* make sure static options are provided by configuration */
++ if ((maskedflags & ctrlstatic) != ctrlstatic)
+ return -EOPNOTSUPP;
+
+ /* clear bits to be modified and copy the flag values */
+ priv->ctrlmode &= ~cm->mask;
+- priv->ctrlmode |= (cm->flags & cm->mask);
++ priv->ctrlmode |= maskedflags;
+
+ /* CAN_CTRLMODE_FD can only be set when driver supports FD */
+ if (priv->ctrlmode & CAN_CTRLMODE_FD)
+@@ -966,6 +1013,7 @@ static struct rtnl_link_ops can_link_ops __read_mostly = {
+ .maxtype = IFLA_CAN_MAX,
+ .policy = can_policy,
+ .setup = can_setup,
++ .validate = can_validate,
+ .newlink = can_newlink,
+ .changelink = can_changelink,
+ .get_size = can_get_size,
+diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
+index ef655177bb5e..37f15eb4260a 100644
+--- a/drivers/net/can/m_can/m_can.c
++++ b/drivers/net/can/m_can/m_can.c
+@@ -958,7 +958,7 @@ static struct net_device *alloc_m_can_dev(void)
+ priv->can.do_get_berr_counter = m_can_get_berr_counter;
+
+ /* CAN_CTRLMODE_FD_NON_ISO is fixed with M_CAN IP v3.0.1 */
+- priv->can.ctrlmode = CAN_CTRLMODE_FD_NON_ISO;
++ can_set_static_ctrlmode(dev, CAN_CTRLMODE_FD_NON_ISO);
+
+ /* CAN_CTRLMODE_FD_NON_ISO can not be changed with M_CAN IP v3.0.1 */
+ priv->can.ctrlmode_supported = CAN_CTRLMODE_LOOPBACK |
+diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
+index 301081db1ef6..1b69427fbb29 100644
+--- a/drivers/net/wireless/ath/ath10k/debug.c
++++ b/drivers/net/wireless/ath/ath10k/debug.c
+@@ -1947,7 +1947,12 @@ static ssize_t ath10k_write_pktlog_filter(struct file *file,
+ goto out;
+ }
+
+- if (filter && (filter != ar->debug.pktlog_filter)) {
++ if (filter == ar->debug.pktlog_filter) {
++ ret = count;
++ goto out;
++ }
++
++ if (filter) {
+ ret = ath10k_wmi_pdev_pktlog_enable(ar, filter);
+ if (ret) {
+ ath10k_warn(ar, "failed to enable pktlog filter %x: %d\n",
+diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
+index 1734cc50ded8..56e0a1de0c37 100644
+--- a/drivers/net/wireless/ath/ath10k/mac.c
++++ b/drivers/net/wireless/ath/ath10k/mac.c
+@@ -3329,7 +3329,10 @@ static int ath10k_add_interface(struct ieee80211_hw *hw,
+ goto err_vdev_delete;
+ }
+
+- if (ar->cfg_tx_chainmask) {
++ /* Configuring number of spatial stream for monitor interface is causing
++ * target assert in qca9888 and qca6174.
++ */
++ if (ar->cfg_tx_chainmask && (vif->type != NL80211_IFTYPE_MONITOR)) {
+ u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);
+
+ vdev_param = ar->wmi.vdev_param->nss;
+diff --git a/drivers/net/wireless/ath/ath5k/led.c b/drivers/net/wireless/ath/ath5k/led.c
+index ca4b7ccd697f..afa0f764c617 100644
+--- a/drivers/net/wireless/ath/ath5k/led.c
++++ b/drivers/net/wireless/ath/ath5k/led.c
+@@ -77,7 +77,7 @@ static const struct pci_device_id ath5k_led_devices[] = {
+ /* HP Compaq CQ60-206US (ddreggors@jumptv.com) */
+ { ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137a), ATH_LED(3, 1) },
+ /* HP Compaq C700 (nitrousnrg@gmail.com) */
+- { ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137b), ATH_LED(3, 1) },
++ { ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137b), ATH_LED(3, 0) },
+ /* LiteOn AR5BXB63 (magooz@salug.it) */
+ { ATH_SDEVICE(PCI_VENDOR_ID_ATHEROS, 0x3067), ATH_LED(3, 0) },
+ /* IBM-specific AR5212 (all others) */
+diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
+index 46a389c20bfc..b7b02549ef54 100644
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -49,6 +49,10 @@ int ath9k_led_blink;
+ module_param_named(blink, ath9k_led_blink, int, 0444);
+ MODULE_PARM_DESC(blink, "Enable LED blink on activity");
+
++static int ath9k_led_active_high = -1;
++module_param_named(led_active_high, ath9k_led_active_high, int, 0444);
++MODULE_PARM_DESC(led_active_high, "Invert LED polarity");
++
+ static int ath9k_btcoex_enable;
+ module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444);
+ MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");
+@@ -600,6 +604,9 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
+ if (ret)
+ return ret;
+
++ if (ath9k_led_active_high != -1)
++ ah->config.led_active_high = ath9k_led_active_high == 1;
++
+ /*
+ * Enable WLAN/BT RX Antenna diversity only when:
+ *
+diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
+index e6fef1be9977..7cdaf40c3057 100644
+--- a/drivers/net/wireless/ath/ath9k/pci.c
++++ b/drivers/net/wireless/ath/ath9k/pci.c
+@@ -28,6 +28,16 @@ static const struct pci_device_id ath_pci_id_table[] = {
+ { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
+ { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
+ { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
++
++#ifdef CONFIG_ATH9K_PCOEM
++ /* Mini PCI AR9220 MB92 cards: Compex WLM200NX, Wistron DNMA-92 */
++ { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
++ 0x0029,
++ PCI_VENDOR_ID_ATHEROS,
++ 0x2096),
++ .driver_data = ATH9K_PCI_LED_ACT_HI },
++#endif
++
+ { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
+
+ #ifdef CONFIG_ATH9K_PCOEM
+diff --git a/drivers/net/wireless/rtlwifi/base.c b/drivers/net/wireless/rtlwifi/base.c
+index 01f56c7df8b5..6b4c10676533 100644
+--- a/drivers/net/wireless/rtlwifi/base.c
++++ b/drivers/net/wireless/rtlwifi/base.c
+@@ -1662,9 +1662,9 @@ void rtl_watchdog_wq_callback(void *data)
+ if (((rtlpriv->link_info.num_rx_inperiod +
+ rtlpriv->link_info.num_tx_inperiod) > 8) ||
+ (rtlpriv->link_info.num_rx_inperiod > 2))
+- rtl_lps_enter(hw);
+- else
+ rtl_lps_leave(hw);
++ else
++ rtl_lps_enter(hw);
+ }
+
+ rtlpriv->link_info.num_rx_inperiod = 0;
+diff --git a/drivers/net/wireless/rtlwifi/btcoexist/halbtc8723b2ant.c b/drivers/net/wireless/rtlwifi/btcoexist/halbtc8723b2ant.c
+index cefe26991421..5c2c0a1b0353 100644
+--- a/drivers/net/wireless/rtlwifi/btcoexist/halbtc8723b2ant.c
++++ b/drivers/net/wireless/rtlwifi/btcoexist/halbtc8723b2ant.c
+@@ -1203,7 +1203,6 @@ static void btc8723b2ant_set_ant_path(struct btc_coexist *btcoexist,
+
+ /* Force GNT_BT to low */
+ btcoexist->btc_write_1byte_bitmask(btcoexist, 0x765, 0x18, 0x0);
+- btcoexist->btc_write_2byte(btcoexist, 0x948, 0x0);
+
+ if (board_info->btdm_ant_pos == BTC_ANTENNA_AT_MAIN_PORT) {
+ /* tell firmware "no antenna inverse" */
+@@ -1211,19 +1210,25 @@ static void btc8723b2ant_set_ant_path(struct btc_coexist *btcoexist,
+ h2c_parameter[1] = 1; /* ext switch type */
+ btcoexist->btc_fill_h2c(btcoexist, 0x65, 2,
+ h2c_parameter);
++ btcoexist->btc_write_2byte(btcoexist, 0x948, 0x0);
+ } else {
+ /* tell firmware "antenna inverse" */
+ h2c_parameter[0] = 1;
+ h2c_parameter[1] = 1; /* ext switch type */
+ btcoexist->btc_fill_h2c(btcoexist, 0x65, 2,
+ h2c_parameter);
++ btcoexist->btc_write_2byte(btcoexist, 0x948, 0x280);
+ }
+ }
+
+ /* ext switch setting */
+ if (use_ext_switch) {
+ /* fixed internal switch S1->WiFi, S0->BT */
+- btcoexist->btc_write_2byte(btcoexist, 0x948, 0x0);
++ if (board_info->btdm_ant_pos == BTC_ANTENNA_AT_MAIN_PORT)
++ btcoexist->btc_write_2byte(btcoexist, 0x948, 0x0);
++ else
++ btcoexist->btc_write_2byte(btcoexist, 0x948, 0x280);
++
+ switch (antpos_type) {
+ case BTC_ANT_WIFI_AT_MAIN:
+ /* ext switch main at wifi */
+diff --git a/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.c b/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.c
+index b2791c893417..babd1490f20c 100644
+--- a/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.c
++++ b/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.c
+@@ -965,13 +965,38 @@ void exhalbtc_set_chip_type(u8 chip_type)
+ }
+ }
+
+-void exhalbtc_set_ant_num(u8 type, u8 ant_num)
++void exhalbtc_set_ant_num(struct rtl_priv *rtlpriv, u8 type, u8 ant_num)
+ {
+ if (BT_COEX_ANT_TYPE_PG == type) {
+ gl_bt_coexist.board_info.pg_ant_num = ant_num;
+ gl_bt_coexist.board_info.btdm_ant_num = ant_num;
++ /* The antenna position:
++ * Main (default) or Aux for pgAntNum=2 && btdmAntNum =1.
++ * The antenna position should be determined by
++ * auto-detect mechanism.
++ * The following is assumed to main,
++ * and those must be modified
++ * if y auto-detect mechanism is ready
++ */
++ if ((gl_bt_coexist.board_info.pg_ant_num == 2) &&
++ (gl_bt_coexist.board_info.btdm_ant_num == 1))
++ gl_bt_coexist.board_info.btdm_ant_pos =
++ BTC_ANTENNA_AT_MAIN_PORT;
++ else
++ gl_bt_coexist.board_info.btdm_ant_pos =
++ BTC_ANTENNA_AT_MAIN_PORT;
+ } else if (BT_COEX_ANT_TYPE_ANTDIV == type) {
+ gl_bt_coexist.board_info.btdm_ant_num = ant_num;
++ gl_bt_coexist.board_info.btdm_ant_pos =
++ BTC_ANTENNA_AT_MAIN_PORT;
++ } else if (type == BT_COEX_ANT_TYPE_DETECTED) {
++ gl_bt_coexist.board_info.btdm_ant_num = ant_num;
++ if (rtlpriv->cfg->mod_params->ant_sel == 1)
++ gl_bt_coexist.board_info.btdm_ant_pos =
++ BTC_ANTENNA_AT_AUX_PORT;
++ else
++ gl_bt_coexist.board_info.btdm_ant_pos =
++ BTC_ANTENNA_AT_MAIN_PORT;
+ }
+ }
+
+diff --git a/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h b/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h
+index 0a903ea179ef..f41ca57dd8a7 100644
+--- a/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h
++++ b/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h
+@@ -535,7 +535,7 @@ void exhalbtc_set_bt_patch_version(u16 bt_hci_version, u16 bt_patch_version);
+ void exhalbtc_update_min_bt_rssi(char bt_rssi);
+ void exhalbtc_set_bt_exist(bool bt_exist);
+ void exhalbtc_set_chip_type(u8 chip_type);
+-void exhalbtc_set_ant_num(u8 type, u8 ant_num);
++void exhalbtc_set_ant_num(struct rtl_priv *rtlpriv, u8 type, u8 ant_num);
+ void exhalbtc_display_bt_coex_info(struct btc_coexist *btcoexist);
+ void exhalbtc_signal_compensation(struct btc_coexist *btcoexist,
+ u8 *rssi_wifi, u8 *rssi_bt);
+diff --git a/drivers/net/wireless/rtlwifi/btcoexist/rtl_btc.c b/drivers/net/wireless/rtlwifi/btcoexist/rtl_btc.c
+index b9b0cb7af8ea..d3fd9211b3a4 100644
+--- a/drivers/net/wireless/rtlwifi/btcoexist/rtl_btc.c
++++ b/drivers/net/wireless/rtlwifi/btcoexist/rtl_btc.c
+@@ -72,7 +72,10 @@ void rtl_btc_init_hal_vars(struct rtl_priv *rtlpriv)
+ __func__, bt_type);
+ exhalbtc_set_chip_type(bt_type);
+
+- exhalbtc_set_ant_num(BT_COEX_ANT_TYPE_PG, ant_num);
++ if (rtlpriv->cfg->mod_params->ant_sel == 1)
++ exhalbtc_set_ant_num(rtlpriv, BT_COEX_ANT_TYPE_DETECTED, 1);
++ else
++ exhalbtc_set_ant_num(rtlpriv, BT_COEX_ANT_TYPE_PG, ant_num);
+ }
+
+ void rtl_btc_init_hw_config(struct rtl_priv *rtlpriv)
+diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
+index 7f471bff435c..5b4048041147 100644
+--- a/drivers/net/wireless/rtlwifi/pci.c
++++ b/drivers/net/wireless/rtlwifi/pci.c
+@@ -1573,7 +1573,7 @@ int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw)
+ true,
+ HW_DESC_TXBUFF_ADDR),
+ skb->len, PCI_DMA_TODEVICE);
+- kfree_skb(skb);
++ dev_kfree_skb_irq(skb);
+ ring->idx = (ring->idx + 1) % ring->entries;
+ }
+ ring->idx = 0;
+diff --git a/drivers/net/wireless/rtlwifi/rtl8723be/hw.c b/drivers/net/wireless/rtlwifi/rtl8723be/hw.c
+index b9417268427e..bff9152c1ef0 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8723be/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8723be/hw.c
+@@ -2684,6 +2684,7 @@ void rtl8723be_read_bt_coexist_info_from_hwpg(struct ieee80211_hw *hw,
+ bool auto_load_fail, u8 *hwinfo)
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
++ struct rtl_mod_params *mod_params = rtlpriv->cfg->mod_params;
+ u8 value;
+ u32 tmpu_32;
+
+@@ -2702,6 +2703,10 @@ void rtl8723be_read_bt_coexist_info_from_hwpg(struct ieee80211_hw *hw,
+ rtlpriv->btcoexist.btc_info.ant_num = ANT_X2;
+ }
+
++ /* override ant_num / ant_path */
++ if (mod_params->ant_sel)
++ rtlpriv->btcoexist.btc_info.ant_num =
++ (mod_params->ant_sel == 1 ? ANT_X2 : ANT_X1);
+ }
+
+ void rtl8723be_bt_reg_init(struct ieee80211_hw *hw)
+diff --git a/drivers/net/wireless/rtlwifi/rtl8723be/sw.c b/drivers/net/wireless/rtlwifi/rtl8723be/sw.c
+index 7bf88d9dcdc3..0adee281ded8 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8723be/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8723be/sw.c
+@@ -93,7 +93,6 @@ int rtl8723be_init_sw_vars(struct ieee80211_hw *hw)
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+
+ rtl8723be_bt_reg_init(hw);
+- rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
+ rtlpriv->btcoexist.btc_ops = rtl_btc_get_ops_pointer();
+
+ rtlpriv->dm.dm_initialgain_enable = 1;
+@@ -151,6 +150,10 @@ int rtl8723be_init_sw_vars(struct ieee80211_hw *hw)
+ rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
+ rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
+ rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
++ rtlpriv->cfg->mod_params->sw_crypto =
++ rtlpriv->cfg->mod_params->sw_crypto;
++ rtlpriv->cfg->mod_params->disable_watchdog =
++ rtlpriv->cfg->mod_params->disable_watchdog;
+ if (rtlpriv->cfg->mod_params->disable_watchdog)
+ pr_info("watchdog disabled\n");
+ rtlpriv->psc.reg_fwctrl_lps = 3;
+@@ -267,6 +270,10 @@ static struct rtl_mod_params rtl8723be_mod_params = {
+ .inactiveps = true,
+ .swctrl_lps = false,
+ .fwctrl_lps = true,
++ .msi_support = false,
++ .disable_watchdog = false,
++ .debug = DBG_EMERG,
++ .ant_sel = 0,
+ };
+
+ static struct rtl_hal_cfg rtl8723be_hal_cfg = {
+@@ -388,6 +395,7 @@ module_param_named(fwlps, rtl8723be_mod_params.fwctrl_lps, bool, 0444);
+ module_param_named(msi, rtl8723be_mod_params.msi_support, bool, 0444);
+ module_param_named(disable_watchdog, rtl8723be_mod_params.disable_watchdog,
+ bool, 0444);
++module_param_named(ant_sel, rtl8723be_mod_params.ant_sel, int, 0444);
+ MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
+ MODULE_PARM_DESC(ips, "Set to 0 to not use link power save (default 1)\n");
+ MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 0)\n");
+@@ -396,6 +404,7 @@ MODULE_PARM_DESC(msi, "Set to 1 to use MSI interrupts mode (default 0)\n");
+ MODULE_PARM_DESC(debug, "Set debug level (0-5) (default 0)");
+ MODULE_PARM_DESC(disable_watchdog,
+ "Set to 1 to disable the watchdog (default 0)\n");
++MODULE_PARM_DESC(ant_sel, "Set to 1 or 2 to force antenna number (default 0)\n");
+
+ static SIMPLE_DEV_PM_OPS(rtlwifi_pm_ops, rtl_pci_suspend, rtl_pci_resume);
+
+diff --git a/drivers/net/wireless/rtlwifi/wifi.h b/drivers/net/wireless/rtlwifi/wifi.h
+index f1fa8100f288..2fb502418fcb 100644
+--- a/drivers/net/wireless/rtlwifi/wifi.h
++++ b/drivers/net/wireless/rtlwifi/wifi.h
+@@ -2236,6 +2236,9 @@ struct rtl_mod_params {
+
+ /* default 0: 1 means do not disable interrupts */
+ bool int_clear;
++
++ /* select antenna */
++ int ant_sel;
+ };
+
+ struct rtl_hal_usbint_cfg {
+diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
+index 25ad1b27ffae..993ff22df7ec 100644
+--- a/drivers/pci/probe.c
++++ b/drivers/pci/probe.c
+@@ -176,9 +176,6 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
+ u16 orig_cmd;
+ struct pci_bus_region region, inverted_region;
+
+- if (dev->non_compliant_bars)
+- return 0;
+-
+ mask = type ? PCI_ROM_ADDRESS_MASK : ~0;
+
+ /* No printks while decoding is disabled! */
+@@ -319,6 +316,9 @@ static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
+ {
+ unsigned int pos, reg;
+
++ if (dev->non_compliant_bars)
++ return;
++
+ for (pos = 0; pos < howmany; pos++) {
+ struct resource *res = &dev->resource[pos];
+ reg = PCI_BASE_ADDRESS_0 + (pos << 2);
+diff --git a/drivers/pinctrl/samsung/pinctrl-exynos5440.c b/drivers/pinctrl/samsung/pinctrl-exynos5440.c
+index 86192be3b679..cd047556d9ca 100644
+--- a/drivers/pinctrl/samsung/pinctrl-exynos5440.c
++++ b/drivers/pinctrl/samsung/pinctrl-exynos5440.c
+@@ -109,6 +109,7 @@ struct exynos5440_pmx_func {
+ * @nr_groups: number of pin groups available.
+ * @pmx_functions: list of pin functions parsed from device tree.
+ * @nr_functions: number of pin functions available.
++ * @range: gpio range to register with pinctrl
+ */
+ struct exynos5440_pinctrl_priv_data {
+ void __iomem *reg_base;
+@@ -119,6 +120,7 @@ struct exynos5440_pinctrl_priv_data {
+ unsigned int nr_groups;
+ const struct exynos5440_pmx_func *pmx_functions;
+ unsigned int nr_functions;
++ struct pinctrl_gpio_range range;
+ };
+
+ /**
+@@ -769,7 +771,6 @@ static int exynos5440_pinctrl_register(struct platform_device *pdev,
+ struct pinctrl_desc *ctrldesc;
+ struct pinctrl_dev *pctl_dev;
+ struct pinctrl_pin_desc *pindesc, *pdesc;
+- struct pinctrl_gpio_range grange;
+ char *pin_names;
+ int pin, ret;
+
+@@ -827,12 +828,12 @@ static int exynos5440_pinctrl_register(struct platform_device *pdev,
+ return -EINVAL;
+ }
+
+- grange.name = "exynos5440-pctrl-gpio-range";
+- grange.id = 0;
+- grange.base = 0;
+- grange.npins = EXYNOS5440_MAX_PINS;
+- grange.gc = priv->gc;
+- pinctrl_add_gpio_range(pctl_dev, &grange);
++ priv->range.name = "exynos5440-pctrl-gpio-range";
++ priv->range.id = 0;
++ priv->range.base = 0;
++ priv->range.npins = EXYNOS5440_MAX_PINS;
++ priv->range.gc = priv->gc;
++ pinctrl_add_gpio_range(pctl_dev, &priv->range);
+ return 0;
+ }
+
+diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
+index 8a28116b5805..b352a1fa2f2a 100644
+--- a/drivers/regulator/core.c
++++ b/drivers/regulator/core.c
+@@ -110,6 +110,11 @@ static struct regulator *create_regulator(struct regulator_dev *rdev,
+ struct device *dev,
+ const char *supply_name);
+
++static struct regulator_dev *dev_to_rdev(struct device *dev)
++{
++ return container_of(dev, struct regulator_dev, dev);
++}
++
+ static const char *rdev_get_name(struct regulator_dev *rdev)
+ {
+ if (rdev->constraints && rdev->constraints->name)
+@@ -3587,6 +3592,11 @@ static void rdev_init_debugfs(struct regulator_dev *rdev)
+ &rdev->bypass_count);
+ }
+
++static int regulator_register_resolve_supply(struct device *dev, void *data)
++{
++ return regulator_resolve_supply(dev_to_rdev(dev));
++}
++
+ /**
+ * regulator_register - register regulator
+ * @regulator_desc: regulator to register
+@@ -3735,6 +3745,10 @@ regulator_register(const struct regulator_desc *regulator_desc,
+ list_add(&rdev->list, ®ulator_list);
+
+ rdev_init_debugfs(rdev);
++
++ /* try to resolve regulators supply since a new one was registered */
++ class_for_each_device(®ulator_class, NULL, NULL,
++ regulator_register_resolve_supply);
+ out:
+ mutex_unlock(®ulator_list_mutex);
+ kfree(config);
+@@ -4104,13 +4118,57 @@ static int __init regulator_init(void)
+ /* init early to allow our consumers to complete system booting */
+ core_initcall(regulator_init);
+
+-static int __init regulator_init_complete(void)
++static int __init regulator_late_cleanup(struct device *dev, void *data)
+ {
+- struct regulator_dev *rdev;
+- const struct regulator_ops *ops;
+- struct regulation_constraints *c;
++ struct regulator_dev *rdev = dev_to_rdev(dev);
++ const struct regulator_ops *ops = rdev->desc->ops;
++ struct regulation_constraints *c = rdev->constraints;
+ int enabled, ret;
+
++ if (c && c->always_on)
++ return 0;
++
++ if (c && !(c->valid_ops_mask & REGULATOR_CHANGE_STATUS))
++ return 0;
++
++ mutex_lock(&rdev->mutex);
++
++ if (rdev->use_count)
++ goto unlock;
++
++ /* If we can't read the status assume it's on. */
++ if (ops->is_enabled)
++ enabled = ops->is_enabled(rdev);
++ else
++ enabled = 1;
++
++ if (!enabled)
++ goto unlock;
++
++ if (have_full_constraints()) {
++ /* We log since this may kill the system if it goes
++ * wrong. */
++ rdev_info(rdev, "disabling\n");
++ ret = _regulator_do_disable(rdev);
++ if (ret != 0)
++ rdev_err(rdev, "couldn't disable: %d\n", ret);
++ } else {
++ /* The intention is that in future we will
++ * assume that full constraints are provided
++ * so warn even if we aren't going to do
++ * anything here.
++ */
++ rdev_warn(rdev, "incomplete constraints, leaving on\n");
++ }
++
++unlock:
++ mutex_unlock(&rdev->mutex);
++
++ return 0;
++}
++
++static int __init regulator_init_complete(void)
++{
+ /*
+ * Since DT doesn't provide an idiomatic mechanism for
+ * enabling full constraints and since it's much more natural
+@@ -4120,58 +4178,13 @@ static int __init regulator_init_complete(void)
+ if (of_have_populated_dt())
+ has_full_constraints = true;
+
+- mutex_lock(®ulator_list_mutex);
+-
+ /* If we have a full configuration then disable any regulators
+ * we have permission to change the status for and which are
+ * not in use or always_on. This is effectively the default
+ * for DT and ACPI as they have full constraints.
+ */
+- list_for_each_entry(rdev, ®ulator_list, list) {
+- ops = rdev->desc->ops;
+- c = rdev->constraints;
+-
+- if (c && c->always_on)
+- continue;
+-
+- if (c && !(c->valid_ops_mask & REGULATOR_CHANGE_STATUS))
+- continue;
+-
+- mutex_lock(&rdev->mutex);
+-
+- if (rdev->use_count)
+- goto unlock;
+-
+- /* If we can't read the status assume it's on. */
+- if (ops->is_enabled)
+- enabled = ops->is_enabled(rdev);
+- else
+- enabled = 1;
+-
+- if (!enabled)
+- goto unlock;
+-
+- if (have_full_constraints()) {
+- /* We log since this may kill the system if it
+- * goes wrong. */
+- rdev_info(rdev, "disabling\n");
+- ret = _regulator_do_disable(rdev);
+- if (ret != 0)
+- rdev_err(rdev, "couldn't disable: %d\n", ret);
+- } else {
+- /* The intention is that in future we will
+- * assume that full constraints are provided
+- * so warn even if we aren't going to do
+- * anything here.
+- */
+- rdev_warn(rdev, "incomplete constraints, leaving on\n");
+- }
+-
+-unlock:
+- mutex_unlock(&rdev->mutex);
+- }
+-
+- mutex_unlock(®ulator_list_mutex);
++ class_for_each_device(®ulator_class, NULL, NULL,
++ regulator_late_cleanup);
+
+ return 0;
+ }
+diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
+index 18c9c0648bd0..3e8e92b1535d 100644
+--- a/drivers/scsi/aacraid/aacraid.h
++++ b/drivers/scsi/aacraid/aacraid.h
+@@ -29,6 +29,7 @@ enum {
+ #define AAC_INT_MODE_MSI (1<<1)
+ #define AAC_INT_MODE_AIF (1<<2)
+ #define AAC_INT_MODE_SYNC (1<<3)
++#define AAC_INT_MODE_MSIX (1<<16)
+
+ #define AAC_INT_ENABLE_TYPE1_INTX 0xfffffffb
+ #define AAC_INT_ENABLE_TYPE1_MSIX 0xfffffffa
+diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
+index 45db84ad322f..e736ecb3b8a4 100644
+--- a/drivers/scsi/aacraid/comminit.c
++++ b/drivers/scsi/aacraid/comminit.c
+@@ -37,6 +37,7 @@
+ #include <linux/spinlock.h>
+ #include <linux/slab.h>
+ #include <linux/blkdev.h>
++#include <linux/delay.h>
+ #include <linux/completion.h>
+ #include <linux/mm.h>
+ #include <scsi/scsi_host.h>
+@@ -49,6 +50,20 @@ struct aac_common aac_config = {
+ .irq_mod = 1
+ };
+
++static inline int aac_is_msix_mode(struct aac_dev *dev)
++{
++ u32 status;
++
++ status = src_readl(dev, MUnit.OMR);
++ return (status & AAC_INT_MODE_MSIX);
++}
++
++static inline void aac_change_to_intx(struct aac_dev *dev)
++{
++ aac_src_access_devreg(dev, AAC_DISABLE_MSIX);
++ aac_src_access_devreg(dev, AAC_ENABLE_INTX);
++}
++
+ static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
+ {
+ unsigned char *base;
+@@ -358,6 +373,15 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
+ dev->comm_interface = AAC_COMM_PRODUCER;
+ dev->raw_io_interface = dev->raw_io_64 = 0;
+
++
++ /*
++ * Enable INTX mode, if not done already Enabled
++ */
++ if (aac_is_msix_mode(dev)) {
++ aac_change_to_intx(dev);
++ dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
++ }
++
+ if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
+ 0, 0, 0, 0, 0, 0,
+ status+0, status+1, status+2, status+3, NULL)) &&
+diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
+index 4b79d9511778..9410ffe68d0a 100644
+--- a/drivers/scsi/aacraid/commsup.c
++++ b/drivers/scsi/aacraid/commsup.c
+@@ -611,10 +611,10 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
+ }
+ return -EFAULT;
+ }
+- /* We used to udelay() here but that absorbed
+- * a CPU when a timeout occured. Not very
+- * useful. */
+- cpu_relax();
++ /*
++ * Allow other processes / CPUS to use core
++ */
++ schedule();
+ }
+ } else if (down_interruptible(&fibptr->event_wait)) {
+ /* Do nothing ... satisfy
+@@ -1999,6 +1999,10 @@ int aac_command_thread(void *data)
+ if (difference <= 0)
+ difference = 1;
+ set_current_state(TASK_INTERRUPTIBLE);
++
++ if (kthread_should_stop())
++ break;
++
+ schedule_timeout(difference);
+
+ if (kthread_should_stop())
+diff --git a/drivers/staging/comedi/drivers/das1800.c b/drivers/staging/comedi/drivers/das1800.c
+index 53baf37cd21a..2e78d1fe1f09 100644
+--- a/drivers/staging/comedi/drivers/das1800.c
++++ b/drivers/staging/comedi/drivers/das1800.c
+@@ -567,14 +567,17 @@ static int das1800_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
+ struct comedi_isadma_desc *desc;
+ int i;
+
+- outb(0x0, dev->iobase + DAS1800_STATUS); /* disable conversions */
+- outb(0x0, dev->iobase + DAS1800_CONTROL_B); /* disable interrupts and dma */
+- outb(0x0, dev->iobase + DAS1800_CONTROL_A); /* disable and clear fifo and stop triggering */
+-
+- for (i = 0; i < 2; i++) {
+- desc = &dma->desc[i];
+- if (desc->chan)
+- comedi_isadma_disable(desc->chan);
++ /* disable and stop conversions */
++ outb(0x0, dev->iobase + DAS1800_STATUS);
++ outb(0x0, dev->iobase + DAS1800_CONTROL_B);
++ outb(0x0, dev->iobase + DAS1800_CONTROL_A);
++
++ if (dma) {
++ for (i = 0; i < 2; i++) {
++ desc = &dma->desc[i];
++ if (desc->chan)
++ comedi_isadma_disable(desc->chan);
++ }
+ }
+
+ return 0;
+@@ -934,13 +937,14 @@ static void das1800_ai_setup_dma(struct comedi_device *dev,
+ {
+ struct das1800_private *devpriv = dev->private;
+ struct comedi_isadma *dma = devpriv->dma;
+- struct comedi_isadma_desc *desc = &dma->desc[0];
++ struct comedi_isadma_desc *desc;
+ unsigned int bytes;
+
+ if ((devpriv->irq_dma_bits & DMA_ENABLED) == 0)
+ return;
+
+ dma->cur_dma = 0;
++ desc = &dma->desc[0];
+
+ /* determine a dma transfer size to fill buffer in 0.3 sec */
+ bytes = das1800_ai_transfer_size(dev, s, desc->maxsize, 300000000);
+diff --git a/drivers/thunderbolt/eeprom.c b/drivers/thunderbolt/eeprom.c
+index 0dde34e3a7c5..545c60c826a1 100644
+--- a/drivers/thunderbolt/eeprom.c
++++ b/drivers/thunderbolt/eeprom.c
+@@ -444,6 +444,7 @@ int tb_drom_read(struct tb_switch *sw)
+ return tb_drom_parse_entries(sw);
+ err:
+ kfree(sw->drom);
++ sw->drom = NULL;
+ return -EIO;
+
+ }
+diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
+index 2c34c3249972..2ec337612a79 100644
+--- a/drivers/tty/n_gsm.c
++++ b/drivers/tty/n_gsm.c
+@@ -2045,7 +2045,9 @@ static void gsm_cleanup_mux(struct gsm_mux *gsm)
+ }
+ }
+ spin_unlock(&gsm_mux_lock);
+- WARN_ON(i == MAX_MUX);
++ /* open failed before registering => nothing to do */
++ if (i == MAX_MUX)
++ return;
+
+ /* In theory disconnecting DLCI 0 is sufficient but for some
+ modems this is apparently not the case. */
+diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
+index bbc4ce66c2c1..644ddb841d9f 100644
+--- a/drivers/tty/n_hdlc.c
++++ b/drivers/tty/n_hdlc.c
+@@ -600,7 +600,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
+ add_wait_queue(&tty->read_wait, &wait);
+
+ for (;;) {
+- if (test_bit(TTY_OTHER_DONE, &tty->flags)) {
++ if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) {
+ ret = -EIO;
+ break;
+ }
+@@ -828,7 +828,7 @@ static unsigned int n_hdlc_tty_poll(struct tty_struct *tty, struct file *filp,
+ /* set bits for operations that won't block */
+ if (n_hdlc->rx_buf_list.head)
+ mask |= POLLIN | POLLRDNORM; /* readable */
+- if (test_bit(TTY_OTHER_DONE, &tty->flags))
++ if (test_bit(TTY_OTHER_CLOSED, &tty->flags))
+ mask |= POLLHUP;
+ if (tty_hung_up_p(filp))
+ mask |= POLLHUP;
+diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
+index 33088c70ef3b..aba20f66bdd9 100644
+--- a/drivers/tty/n_tty.c
++++ b/drivers/tty/n_tty.c
+@@ -1962,18 +1962,6 @@ static inline int input_available_p(struct tty_struct *tty, int poll)
+ return ldata->commit_head - ldata->read_tail >= amt;
+ }
+
+-static inline int check_other_done(struct tty_struct *tty)
+-{
+- int done = test_bit(TTY_OTHER_DONE, &tty->flags);
+- if (done) {
+- /* paired with cmpxchg() in check_other_closed(); ensures
+- * read buffer head index is not stale
+- */
+- smp_mb__after_atomic();
+- }
+- return done;
+-}
+-
+ /**
+ * copy_from_read_buf - copy read data directly
+ * @tty: terminal device
+@@ -2192,7 +2180,7 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
+ struct n_tty_data *ldata = tty->disc_data;
+ unsigned char __user *b = buf;
+ DEFINE_WAIT_FUNC(wait, woken_wake_function);
+- int c, done;
++ int c;
+ int minimum, time;
+ ssize_t retval = 0;
+ long timeout;
+@@ -2260,32 +2248,35 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
+ ((minimum - (b - buf)) >= 1))
+ ldata->minimum_to_wake = (minimum - (b - buf));
+
+- done = check_other_done(tty);
+-
+ if (!input_available_p(tty, 0)) {
+- if (done) {
+- retval = -EIO;
+- break;
+- }
+- if (tty_hung_up_p(file))
+- break;
+- if (!timeout)
+- break;
+- if (file->f_flags & O_NONBLOCK) {
+- retval = -EAGAIN;
+- break;
+- }
+- if (signal_pending(current)) {
+- retval = -ERESTARTSYS;
+- break;
+- }
+ up_read(&tty->termios_rwsem);
++ tty_buffer_flush_work(tty->port);
++ down_read(&tty->termios_rwsem);
++ if (!input_available_p(tty, 0)) {
++ if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) {
++ retval = -EIO;
++ break;
++ }
++ if (tty_hung_up_p(file))
++ break;
++ if (!timeout)
++ break;
++ if (file->f_flags & O_NONBLOCK) {
++ retval = -EAGAIN;
++ break;
++ }
++ if (signal_pending(current)) {
++ retval = -ERESTARTSYS;
++ break;
++ }
++ up_read(&tty->termios_rwsem);
+
+- timeout = wait_woken(&wait, TASK_INTERRUPTIBLE,
+- timeout);
++ timeout = wait_woken(&wait, TASK_INTERRUPTIBLE,
++ timeout);
+
+- down_read(&tty->termios_rwsem);
+- continue;
++ down_read(&tty->termios_rwsem);
++ continue;
++ }
+ }
+
+ if (ldata->icanon && !L_EXTPROC(tty)) {
+@@ -2470,12 +2461,17 @@ static unsigned int n_tty_poll(struct tty_struct *tty, struct file *file,
+
+ poll_wait(file, &tty->read_wait, wait);
+ poll_wait(file, &tty->write_wait, wait);
+- if (check_other_done(tty))
+- mask |= POLLHUP;
+ if (input_available_p(tty, 1))
+ mask |= POLLIN | POLLRDNORM;
++ else {
++ tty_buffer_flush_work(tty->port);
++ if (input_available_p(tty, 1))
++ mask |= POLLIN | POLLRDNORM;
++ }
+ if (tty->packet && tty->link->ctrl_status)
+ mask |= POLLPRI | POLLIN | POLLRDNORM;
++ if (test_bit(TTY_OTHER_CLOSED, &tty->flags))
++ mask |= POLLHUP;
+ if (tty_hung_up_p(file))
+ mask |= POLLHUP;
+ if (!(mask & (POLLHUP | POLLIN | POLLRDNORM))) {
+diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
+index 254c183a5efe..b1f78aafb2d0 100644
+--- a/drivers/tty/pty.c
++++ b/drivers/tty/pty.c
+@@ -54,7 +54,7 @@ static void pty_close(struct tty_struct *tty, struct file *filp)
+ if (!tty->link)
+ return;
+ set_bit(TTY_OTHER_CLOSED, &tty->link->flags);
+- tty_flip_buffer_push(tty->link->port);
++ wake_up_interruptible(&tty->link->read_wait);
+ wake_up_interruptible(&tty->link->write_wait);
+ if (tty->driver->subtype == PTY_TYPE_MASTER) {
+ set_bit(TTY_OTHER_CLOSED, &tty->flags);
+@@ -242,9 +242,7 @@ static int pty_open(struct tty_struct *tty, struct file *filp)
+ goto out;
+
+ clear_bit(TTY_IO_ERROR, &tty->flags);
+- /* TTY_OTHER_CLOSED must be cleared before TTY_OTHER_DONE */
+ clear_bit(TTY_OTHER_CLOSED, &tty->link->flags);
+- clear_bit(TTY_OTHER_DONE, &tty->link->flags);
+ set_bit(TTY_THROTTLED, &tty->flags);
+ return 0;
+
+diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
+index b82b2a0f82a3..a78a62bf0c96 100644
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -1402,6 +1402,9 @@ byt_set_termios(struct uart_port *p, struct ktermios *termios,
+ unsigned long m, n;
+ u32 reg;
+
++ /* Gracefully handle the B0 case: fall back to B9600 */
++ fuart = fuart ? fuart : 9600 * 16;
++
+ /* Get Fuart closer to Fref */
+ fuart *= rounddown_pow_of_two(fref / fuart);
+
+diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
+index 7d2532b23969..100c2413c22f 100644
+--- a/drivers/tty/serial/ucc_uart.c
++++ b/drivers/tty/serial/ucc_uart.c
+@@ -1478,6 +1478,9 @@ static const struct of_device_id ucc_uart_match[] = {
+ .type = "serial",
+ .compatible = "ucc_uart",
+ },
++ {
++ .compatible = "fsl,t1040-ucc-uart",
++ },
+ {},
+ };
+ MODULE_DEVICE_TABLE(of, ucc_uart_match);
+diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
+index 2f78b77f0f81..6b9de83d297e 100644
+--- a/drivers/tty/tty_buffer.c
++++ b/drivers/tty/tty_buffer.c
+@@ -37,29 +37,6 @@
+
+ #define TTY_BUFFER_PAGE (((PAGE_SIZE - sizeof(struct tty_buffer)) / 2) & ~0xFF)
+
+-/*
+- * If all tty flip buffers have been processed by flush_to_ldisc() or
+- * dropped by tty_buffer_flush(), check if the linked pty has been closed.
+- * If so, wake the reader/poll to process
+- */
+-static inline void check_other_closed(struct tty_struct *tty)
+-{
+- unsigned long flags, old;
+-
+- /* transition from TTY_OTHER_CLOSED => TTY_OTHER_DONE must be atomic */
+- for (flags = ACCESS_ONCE(tty->flags);
+- test_bit(TTY_OTHER_CLOSED, &flags);
+- ) {
+- old = flags;
+- __set_bit(TTY_OTHER_DONE, &flags);
+- flags = cmpxchg(&tty->flags, old, flags);
+- if (old == flags) {
+- wake_up_interruptible(&tty->read_wait);
+- break;
+- }
+- }
+-}
+-
+ /**
+ * tty_buffer_lock_exclusive - gain exclusive access to buffer
+ * tty_buffer_unlock_exclusive - release exclusive access
+@@ -251,8 +228,6 @@ void tty_buffer_flush(struct tty_struct *tty, struct tty_ldisc *ld)
+ if (ld && ld->ops->flush_buffer)
+ ld->ops->flush_buffer(tty);
+
+- check_other_closed(tty);
+-
+ atomic_dec(&buf->priority);
+ mutex_unlock(&buf->lock);
+ }
+@@ -495,10 +470,8 @@ static void flush_to_ldisc(struct work_struct *work)
+ smp_rmb();
+ count = head->commit - head->read;
+ if (!count) {
+- if (next == NULL) {
+- check_other_closed(tty);
++ if (next == NULL)
+ break;
+- }
+ buf->head = next;
+ tty_buffer_free(port, head);
+ continue;
+@@ -576,3 +549,8 @@ void tty_buffer_set_lock_subclass(struct tty_port *port)
+ {
+ lockdep_set_subclass(&port->buf.lock, TTY_LOCK_SLAVE);
+ }
++
++void tty_buffer_flush_work(struct tty_port *port)
++{
++ flush_work(&port->buf.work);
++}
+diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
+index 7792c0e2d3b6..68323c267672 100644
+--- a/drivers/usb/core/driver.c
++++ b/drivers/usb/core/driver.c
+@@ -283,7 +283,7 @@ static int usb_probe_interface(struct device *dev)
+ struct usb_device *udev = interface_to_usbdev(intf);
+ const struct usb_device_id *id;
+ int error = -ENODEV;
+- int lpm_disable_error;
++ int lpm_disable_error = -ENODEV;
+
+ dev_dbg(dev, "%s\n", __func__);
+
+@@ -331,12 +331,14 @@ static int usb_probe_interface(struct device *dev)
+ * setting during probe, that should also be fine. usb_set_interface()
+ * will attempt to disable LPM, and fail if it can't disable it.
+ */
+- lpm_disable_error = usb_unlocked_disable_lpm(udev);
+- if (lpm_disable_error && driver->disable_hub_initiated_lpm) {
+- dev_err(&intf->dev, "%s Failed to disable LPM for driver %s\n.",
+- __func__, driver->name);
+- error = lpm_disable_error;
+- goto err;
++ if (driver->disable_hub_initiated_lpm) {
++ lpm_disable_error = usb_unlocked_disable_lpm(udev);
++ if (lpm_disable_error) {
++ dev_err(&intf->dev, "%s Failed to disable LPM for driver %s\n.",
++ __func__, driver->name);
++ error = lpm_disable_error;
++ goto err;
++ }
+ }
+
+ /* Carry out a deferred switch to altsetting 0 */
+@@ -386,7 +388,8 @@ static int usb_unbind_interface(struct device *dev)
+ struct usb_interface *intf = to_usb_interface(dev);
+ struct usb_host_endpoint *ep, **eps = NULL;
+ struct usb_device *udev;
+- int i, j, error, r, lpm_disable_error;
++ int i, j, error, r;
++ int lpm_disable_error = -ENODEV;
+
+ intf->condition = USB_INTERFACE_UNBINDING;
+
+@@ -394,12 +397,13 @@ static int usb_unbind_interface(struct device *dev)
+ udev = interface_to_usbdev(intf);
+ error = usb_autoresume_device(udev);
+
+- /* Hub-initiated LPM policy may change, so attempt to disable LPM until
++ /* If hub-initiated LPM policy may change, attempt to disable LPM until
+ * the driver is unbound. If LPM isn't disabled, that's fine because it
+ * wouldn't be enabled unless all the bound interfaces supported
+ * hub-initiated LPM.
+ */
+- lpm_disable_error = usb_unlocked_disable_lpm(udev);
++ if (driver->disable_hub_initiated_lpm)
++ lpm_disable_error = usb_unlocked_disable_lpm(udev);
+
+ /*
+ * Terminate all URBs for this interface unless the driver
+@@ -502,7 +506,7 @@ int usb_driver_claim_interface(struct usb_driver *driver,
+ struct device *dev;
+ struct usb_device *udev;
+ int retval = 0;
+- int lpm_disable_error;
++ int lpm_disable_error = -ENODEV;
+
+ if (!iface)
+ return -ENODEV;
+@@ -519,12 +523,14 @@ int usb_driver_claim_interface(struct usb_driver *driver,
+
+ iface->condition = USB_INTERFACE_BOUND;
+
+- /* Disable LPM until this driver is bound. */
+- lpm_disable_error = usb_unlocked_disable_lpm(udev);
+- if (lpm_disable_error && driver->disable_hub_initiated_lpm) {
+- dev_err(&iface->dev, "%s Failed to disable LPM for driver %s\n.",
+- __func__, driver->name);
+- return -ENOMEM;
++ /* See the comment about disabling LPM in usb_probe_interface(). */
++ if (driver->disable_hub_initiated_lpm) {
++ lpm_disable_error = usb_unlocked_disable_lpm(udev);
++ if (lpm_disable_error) {
++ dev_err(&iface->dev, "%s Failed to disable LPM for driver %s\n.",
++ __func__, driver->name);
++ return -ENOMEM;
++ }
+ }
+
+ /* Claimed interfaces are initially inactive (suspended) and
+diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
+index 1c1385e3a824..e47cfcd5640c 100644
+--- a/drivers/usb/core/hcd.c
++++ b/drivers/usb/core/hcd.c
+@@ -915,7 +915,7 @@ static void usb_bus_init (struct usb_bus *bus)
+ bus->bandwidth_allocated = 0;
+ bus->bandwidth_int_reqs = 0;
+ bus->bandwidth_isoc_reqs = 0;
+- mutex_init(&bus->usb_address0_mutex);
++ mutex_init(&bus->devnum_next_mutex);
+
+ INIT_LIST_HEAD (&bus->bus_list);
+ }
+@@ -2446,6 +2446,14 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
+ return NULL;
+ }
+ if (primary_hcd == NULL) {
++ hcd->address0_mutex = kmalloc(sizeof(*hcd->address0_mutex),
++ GFP_KERNEL);
++ if (!hcd->address0_mutex) {
++ kfree(hcd);
++ dev_dbg(dev, "hcd address0 mutex alloc failed\n");
++ return NULL;
++ }
++ mutex_init(hcd->address0_mutex);
+ hcd->bandwidth_mutex = kmalloc(sizeof(*hcd->bandwidth_mutex),
+ GFP_KERNEL);
+ if (!hcd->bandwidth_mutex) {
+@@ -2457,6 +2465,7 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
+ dev_set_drvdata(dev, hcd);
+ } else {
+ mutex_lock(&usb_port_peer_mutex);
++ hcd->address0_mutex = primary_hcd->address0_mutex;
+ hcd->bandwidth_mutex = primary_hcd->bandwidth_mutex;
+ hcd->primary_hcd = primary_hcd;
+ primary_hcd->primary_hcd = primary_hcd;
+@@ -2523,8 +2532,10 @@ static void hcd_release(struct kref *kref)
+ struct usb_hcd *hcd = container_of (kref, struct usb_hcd, kref);
+
+ mutex_lock(&usb_port_peer_mutex);
+- if (usb_hcd_is_primary_hcd(hcd))
++ if (usb_hcd_is_primary_hcd(hcd)) {
++ kfree(hcd->address0_mutex);
+ kfree(hcd->bandwidth_mutex);
++ }
+ if (hcd->shared_hcd) {
+ struct usb_hcd *peer = hcd->shared_hcd;
+
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index db6985f04054..563d84eb484d 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -2066,7 +2066,7 @@ static void choose_devnum(struct usb_device *udev)
+ struct usb_bus *bus = udev->bus;
+
+ /* be safe when more hub events are proceed in parallel */
+- mutex_lock(&bus->usb_address0_mutex);
++ mutex_lock(&bus->devnum_next_mutex);
+ if (udev->wusb) {
+ devnum = udev->portnum + 1;
+ BUG_ON(test_bit(devnum, bus->devmap.devicemap));
+@@ -2084,7 +2084,7 @@ static void choose_devnum(struct usb_device *udev)
+ set_bit(devnum, bus->devmap.devicemap);
+ udev->devnum = devnum;
+ }
+- mutex_unlock(&bus->usb_address0_mutex);
++ mutex_unlock(&bus->devnum_next_mutex);
+ }
+
+ static void release_devnum(struct usb_device *udev)
+@@ -4257,7 +4257,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
+ if (oldspeed == USB_SPEED_LOW)
+ delay = HUB_LONG_RESET_TIME;
+
+- mutex_lock(&hdev->bus->usb_address0_mutex);
++ mutex_lock(hcd->address0_mutex);
+
+ /* Reset the device; full speed may morph to high speed */
+ /* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */
+@@ -4539,7 +4539,7 @@ fail:
+ hub_port_disable(hub, port1, 0);
+ update_devnum(udev, devnum); /* for disconnect processing */
+ }
+- mutex_unlock(&hdev->bus->usb_address0_mutex);
++ mutex_unlock(hcd->address0_mutex);
+ return retval;
+ }
+
+diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
+index 15c307155037..917d99ccf7e4 100644
+--- a/drivers/usb/gadget/function/f_mass_storage.c
++++ b/drivers/usb/gadget/function/f_mass_storage.c
+@@ -279,9 +279,8 @@ struct fsg_common {
+ int cmnd_size;
+ u8 cmnd[MAX_COMMAND_SIZE];
+
+- unsigned int nluns;
+ unsigned int lun;
+- struct fsg_lun **luns;
++ struct fsg_lun *luns[FSG_MAX_LUNS];
+ struct fsg_lun *curlun;
+
+ unsigned int bulk_out_maxpacket;
+@@ -490,6 +489,16 @@ static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req)
+ spin_unlock(&common->lock);
+ }
+
++static int _fsg_common_get_max_lun(struct fsg_common *common)
++{
++ int i = ARRAY_SIZE(common->luns) - 1;
++
++ while (i >= 0 && !common->luns[i])
++ --i;
++
++ return i;
++}
++
+ static int fsg_setup(struct usb_function *f,
+ const struct usb_ctrlrequest *ctrl)
+ {
+@@ -533,7 +542,7 @@ static int fsg_setup(struct usb_function *f,
+ w_length != 1)
+ return -EDOM;
+ VDBG(fsg, "get max LUN\n");
+- *(u8 *)req->buf = fsg->common->nluns - 1;
++ *(u8 *)req->buf = _fsg_common_get_max_lun(fsg->common);
+
+ /* Respond with data/status */
+ req->length = min((u16)1, w_length);
+@@ -2131,8 +2140,9 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+ }
+
+ /* Is the CBW meaningful? */
+- if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~US_BULK_FLAG_IN ||
+- cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) {
++ if (cbw->Lun >= ARRAY_SIZE(common->luns) ||
++ cbw->Flags & ~US_BULK_FLAG_IN || cbw->Length <= 0 ||
++ cbw->Length > MAX_COMMAND_SIZE) {
+ DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, "
+ "cmdlen %u\n",
+ cbw->Lun, cbw->Flags, cbw->Length);
+@@ -2159,7 +2169,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+ if (common->data_size == 0)
+ common->data_dir = DATA_DIR_NONE;
+ common->lun = cbw->Lun;
+- if (common->lun < common->nluns)
++ if (common->lun < ARRAY_SIZE(common->luns))
+ common->curlun = common->luns[common->lun];
+ else
+ common->curlun = NULL;
+@@ -2307,7 +2317,7 @@ reset:
+ }
+
+ common->running = 1;
+- for (i = 0; i < common->nluns; ++i)
++ for (i = 0; i < ARRAY_SIZE(common->luns); ++i)
+ if (common->luns[i])
+ common->luns[i]->unit_attention_data =
+ SS_RESET_OCCURRED;
+@@ -2409,7 +2419,7 @@ static void handle_exception(struct fsg_common *common)
+ if (old_state == FSG_STATE_ABORT_BULK_OUT)
+ common->state = FSG_STATE_STATUS_PHASE;
+ else {
+- for (i = 0; i < common->nluns; ++i) {
++ for (i = 0; i < ARRAY_SIZE(common->luns); ++i) {
+ curlun = common->luns[i];
+ if (!curlun)
+ continue;
+@@ -2453,7 +2463,7 @@ static void handle_exception(struct fsg_common *common)
+ * a waste of time. Ditto for the INTERFACE_CHANGE and
+ * CONFIG_CHANGE cases.
+ */
+- /* for (i = 0; i < common->nluns; ++i) */
++ /* for (i = 0; i < common->ARRAY_SIZE(common->luns); ++i) */
+ /* if (common->luns[i]) */
+ /* common->luns[i]->unit_attention_data = */
+ /* SS_RESET_OCCURRED; */
+@@ -2552,12 +2562,11 @@ static int fsg_main_thread(void *common_)
+
+ if (!common->ops || !common->ops->thread_exits
+ || common->ops->thread_exits(common) < 0) {
+- struct fsg_lun **curlun_it = common->luns;
+- unsigned i = common->nluns;
++ int i;
+
+ down_write(&common->filesem);
+- for (; i--; ++curlun_it) {
+- struct fsg_lun *curlun = *curlun_it;
++ for (i = 0; i < ARRAY_SIZE(common->luns); --i) {
++ struct fsg_lun *curlun = common->luns[i];
+ if (!curlun || !fsg_lun_is_open(curlun))
+ continue;
+
+@@ -2676,6 +2685,7 @@ static struct fsg_common *fsg_common_setup(struct fsg_common *common)
+ init_completion(&common->thread_notifier);
+ init_waitqueue_head(&common->fsg_wait);
+ common->state = FSG_STATE_TERMINATED;
++ memset(common->luns, 0, sizeof(common->luns));
+
+ return common;
+ }
+@@ -2742,9 +2752,9 @@ error_release:
+ }
+ EXPORT_SYMBOL_GPL(fsg_common_set_num_buffers);
+
+-void fsg_common_remove_lun(struct fsg_lun *lun, bool sysfs)
++void fsg_common_remove_lun(struct fsg_lun *lun)
+ {
+- if (sysfs)
++ if (device_is_registered(&lun->dev))
+ device_unregister(&lun->dev);
+ fsg_lun_close(lun);
+ kfree(lun);
+@@ -2757,7 +2767,7 @@ static void _fsg_common_remove_luns(struct fsg_common *common, int n)
+
+ for (i = 0; i < n; ++i)
+ if (common->luns[i]) {
+- fsg_common_remove_lun(common->luns[i], common->sysfs);
++ fsg_common_remove_lun(common->luns[i]);
+ common->luns[i] = NULL;
+ }
+ }
+@@ -2765,40 +2775,8 @@ EXPORT_SYMBOL_GPL(fsg_common_remove_luns);
+
+ void fsg_common_remove_luns(struct fsg_common *common)
+ {
+- _fsg_common_remove_luns(common, common->nluns);
+-}
+-
+-void fsg_common_free_luns(struct fsg_common *common)
+-{
+- fsg_common_remove_luns(common);
+- kfree(common->luns);
+- common->luns = NULL;
++ _fsg_common_remove_luns(common, ARRAY_SIZE(common->luns));
+ }
+-EXPORT_SYMBOL_GPL(fsg_common_free_luns);
+-
+-int fsg_common_set_nluns(struct fsg_common *common, int nluns)
+-{
+- struct fsg_lun **curlun;
+-
+- /* Find out how many LUNs there should be */
+- if (nluns < 1 || nluns > FSG_MAX_LUNS) {
+- pr_err("invalid number of LUNs: %u\n", nluns);
+- return -EINVAL;
+- }
+-
+- curlun = kcalloc(FSG_MAX_LUNS, sizeof(*curlun), GFP_KERNEL);
+- if (unlikely(!curlun))
+- return -ENOMEM;
+-
+- if (common->luns)
+- fsg_common_free_luns(common);
+-
+- common->luns = curlun;
+- common->nluns = nluns;
+-
+- return 0;
+-}
+-EXPORT_SYMBOL_GPL(fsg_common_set_nluns);
+
+ void fsg_common_set_ops(struct fsg_common *common,
+ const struct fsg_operations *ops)
+@@ -2880,7 +2858,7 @@ int fsg_common_create_lun(struct fsg_common *common, struct fsg_lun_config *cfg,
+ char *pathbuf, *p;
+ int rc = -ENOMEM;
+
+- if (!common->nluns || !common->luns)
++ if (id >= ARRAY_SIZE(common->luns))
+ return -ENODEV;
+
+ if (common->luns[id])
+@@ -2949,7 +2927,7 @@ int fsg_common_create_lun(struct fsg_common *common, struct fsg_lun_config *cfg,
+ return 0;
+
+ error_lun:
+- if (common->sysfs)
++ if (device_is_registered(&lun->dev))
+ device_unregister(&lun->dev);
+ fsg_lun_close(lun);
+ common->luns[id] = NULL;
+@@ -2964,14 +2942,16 @@ int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg)
+ char buf[8]; /* enough for 100000000 different numbers, decimal */
+ int i, rc;
+
+- for (i = 0; i < common->nluns; ++i) {
++ fsg_common_remove_luns(common);
++
++ for (i = 0; i < cfg->nluns; ++i) {
+ snprintf(buf, sizeof(buf), "lun%d", i);
+ rc = fsg_common_create_lun(common, &cfg->luns[i], i, buf, NULL);
+ if (rc)
+ goto fail;
+ }
+
+- pr_info("Number of LUNs=%d\n", common->nluns);
++ pr_info("Number of LUNs=%d\n", cfg->nluns);
+
+ return 0;
+
+@@ -2998,51 +2978,26 @@ void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn,
+ }
+ EXPORT_SYMBOL_GPL(fsg_common_set_inquiry_string);
+
+-int fsg_common_run_thread(struct fsg_common *common)
+-{
+- common->state = FSG_STATE_IDLE;
+- /* Tell the thread to start working */
+- common->thread_task =
+- kthread_create(fsg_main_thread, common, "file-storage");
+- if (IS_ERR(common->thread_task)) {
+- common->state = FSG_STATE_TERMINATED;
+- return PTR_ERR(common->thread_task);
+- }
+-
+- DBG(common, "I/O thread pid: %d\n", task_pid_nr(common->thread_task));
+-
+- wake_up_process(common->thread_task);
+-
+- return 0;
+-}
+-EXPORT_SYMBOL_GPL(fsg_common_run_thread);
+-
+ static void fsg_common_release(struct kref *ref)
+ {
+ struct fsg_common *common = container_of(ref, struct fsg_common, ref);
++ int i;
+
+ /* If the thread isn't already dead, tell it to exit now */
+ if (common->state != FSG_STATE_TERMINATED) {
+ raise_exception(common, FSG_STATE_EXIT);
+ wait_for_completion(&common->thread_notifier);
++ common->thread_task = NULL;
+ }
+
+- if (likely(common->luns)) {
+- struct fsg_lun **lun_it = common->luns;
+- unsigned i = common->nluns;
+-
+- /* In error recovery common->nluns may be zero. */
+- for (; i; --i, ++lun_it) {
+- struct fsg_lun *lun = *lun_it;
+- if (!lun)
+- continue;
+- fsg_lun_close(lun);
+- if (common->sysfs)
+- device_unregister(&lun->dev);
+- kfree(lun);
+- }
+-
+- kfree(common->luns);
++ for (i = 0; i < ARRAY_SIZE(common->luns); ++i) {
++ struct fsg_lun *lun = common->luns[i];
++ if (!lun)
++ continue;
++ fsg_lun_close(lun);
++ if (device_is_registered(&lun->dev))
++ device_unregister(&lun->dev);
++ kfree(lun);
+ }
+
+ _fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers);
+@@ -3056,6 +3011,7 @@ static void fsg_common_release(struct kref *ref)
+ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
+ {
+ struct fsg_dev *fsg = fsg_from_func(f);
++ struct fsg_common *common = fsg->common;
+ struct usb_gadget *gadget = c->cdev->gadget;
+ int i;
+ struct usb_ep *ep;
+@@ -3063,6 +3019,13 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
+ int ret;
+ struct fsg_opts *opts;
+
++ /* Don't allow to bind if we don't have at least one LUN */
++ ret = _fsg_common_get_max_lun(common);
++ if (ret < 0) {
++ pr_err("There should be at least one LUN.\n");
++ return -EINVAL;
++ }
++
+ opts = fsg_opts_from_func_inst(f->fi);
+ if (!opts->no_configfs) {
+ ret = fsg_common_set_cdev(fsg->common, c->cdev,
+@@ -3070,9 +3033,21 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
+ if (ret)
+ return ret;
+ fsg_common_set_inquiry_string(fsg->common, NULL, NULL);
+- ret = fsg_common_run_thread(fsg->common);
+- if (ret)
++ }
++
++ if (!common->thread_task) {
++ common->state = FSG_STATE_IDLE;
++ common->thread_task =
++ kthread_create(fsg_main_thread, common, "file-storage");
++ if (IS_ERR(common->thread_task)) {
++ int ret = PTR_ERR(common->thread_task);
++ common->thread_task = NULL;
++ common->state = FSG_STATE_TERMINATED;
+ return ret;
++ }
++ DBG(common, "I/O thread pid: %d\n",
++ task_pid_nr(common->thread_task));
++ wake_up_process(common->thread_task);
+ }
+
+ fsg->gadget = gadget;
+@@ -3355,7 +3330,7 @@ static void fsg_lun_drop(struct config_group *group, struct config_item *item)
+ unregister_gadget_item(gadget);
+ }
+
+- fsg_common_remove_lun(lun_opts->lun, fsg_opts->common->sysfs);
++ fsg_common_remove_lun(lun_opts->lun);
+ fsg_opts->common->luns[lun_opts->lun_id] = NULL;
+ lun_opts->lun_id = 0;
+ mutex_unlock(&fsg_opts->lock);
+@@ -3509,14 +3484,11 @@ static struct usb_function_instance *fsg_alloc_inst(void)
+ rc = PTR_ERR(opts->common);
+ goto release_opts;
+ }
+- rc = fsg_common_set_nluns(opts->common, FSG_MAX_LUNS);
+- if (rc)
+- goto release_opts;
+
+ rc = fsg_common_set_num_buffers(opts->common,
+ CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS);
+ if (rc)
+- goto release_luns;
++ goto release_opts;
+
+ pr_info(FSG_DRIVER_DESC ", version: " FSG_DRIVER_VERSION "\n");
+
+@@ -3524,6 +3496,9 @@ static struct usb_function_instance *fsg_alloc_inst(void)
+ config.removable = true;
+ rc = fsg_common_create_lun(opts->common, &config, 0, "lun.0",
+ (const char **)&opts->func_inst.group.cg_item.ci_name);
++ if (rc)
++ goto release_buffers;
++
+ opts->lun0.lun = opts->common->luns[0];
+ opts->lun0.lun_id = 0;
+ config_group_init_type_name(&opts->lun0.group, "lun.0", &fsg_lun_type);
+@@ -3534,8 +3509,8 @@ static struct usb_function_instance *fsg_alloc_inst(void)
+
+ return &opts->func_inst;
+
+-release_luns:
+- kfree(opts->common->luns);
++release_buffers:
++ fsg_common_free_buffers(opts->common);
+ release_opts:
+ kfree(opts);
+ return ERR_PTR(rc);
+@@ -3561,23 +3536,12 @@ static struct usb_function *fsg_alloc(struct usb_function_instance *fi)
+ struct fsg_opts *opts = fsg_opts_from_func_inst(fi);
+ struct fsg_common *common = opts->common;
+ struct fsg_dev *fsg;
+- unsigned nluns, i;
+
+ fsg = kzalloc(sizeof(*fsg), GFP_KERNEL);
+ if (unlikely(!fsg))
+ return ERR_PTR(-ENOMEM);
+
+ mutex_lock(&opts->lock);
+- if (!opts->refcnt) {
+- for (nluns = i = 0; i < FSG_MAX_LUNS; ++i)
+- if (common->luns[i])
+- nluns = i + 1;
+- if (!nluns)
+- pr_warn("No LUNS defined, continuing anyway\n");
+- else
+- common->nluns = nluns;
+- pr_info("Number of LUNs=%u\n", common->nluns);
+- }
+ opts->refcnt++;
+ mutex_unlock(&opts->lock);
+
+diff --git a/drivers/usb/gadget/function/f_mass_storage.h b/drivers/usb/gadget/function/f_mass_storage.h
+index b4866fcef30b..b6a9918eaefb 100644
+--- a/drivers/usb/gadget/function/f_mass_storage.h
++++ b/drivers/usb/gadget/function/f_mass_storage.h
+@@ -137,14 +137,10 @@ void fsg_common_free_buffers(struct fsg_common *common);
+ int fsg_common_set_cdev(struct fsg_common *common,
+ struct usb_composite_dev *cdev, bool can_stall);
+
+-void fsg_common_remove_lun(struct fsg_lun *lun, bool sysfs);
++void fsg_common_remove_lun(struct fsg_lun *lun);
+
+ void fsg_common_remove_luns(struct fsg_common *common);
+
+-void fsg_common_free_luns(struct fsg_common *common);
+-
+-int fsg_common_set_nluns(struct fsg_common *common, int nluns);
+-
+ void fsg_common_set_ops(struct fsg_common *common,
+ const struct fsg_operations *ops);
+
+@@ -157,8 +153,6 @@ int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg);
+ void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn,
+ const char *pn);
+
+-int fsg_common_run_thread(struct fsg_common *common);
+-
+ void fsg_config_from_params(struct fsg_config *cfg,
+ const struct fsg_module_parameters *params,
+ unsigned int fsg_num_buffers);
+diff --git a/drivers/usb/gadget/legacy/acm_ms.c b/drivers/usb/gadget/legacy/acm_ms.c
+index 1194b09ae746..bc97ec645e68 100644
+--- a/drivers/usb/gadget/legacy/acm_ms.c
++++ b/drivers/usb/gadget/legacy/acm_ms.c
+@@ -147,10 +147,6 @@ static int acm_ms_do_config(struct usb_configuration *c)
+ if (status < 0)
+ goto put_msg;
+
+- status = fsg_common_run_thread(opts->common);
+- if (status)
+- goto remove_acm;
+-
+ status = usb_add_function(c, f_msg);
+ if (status)
+ goto remove_acm;
+@@ -200,10 +196,6 @@ static int acm_ms_bind(struct usb_composite_dev *cdev)
+ if (status)
+ goto fail;
+
+- status = fsg_common_set_nluns(opts->common, config.nluns);
+- if (status)
+- goto fail_set_nluns;
+-
+ status = fsg_common_set_cdev(opts->common, cdev, config.can_stall);
+ if (status)
+ goto fail_set_cdev;
+@@ -239,8 +231,6 @@ static int acm_ms_bind(struct usb_composite_dev *cdev)
+ fail_string_ids:
+ fsg_common_remove_luns(opts->common);
+ fail_set_cdev:
+- fsg_common_free_luns(opts->common);
+-fail_set_nluns:
+ fsg_common_free_buffers(opts->common);
+ fail:
+ usb_put_function_instance(fi_msg);
+diff --git a/drivers/usb/gadget/legacy/mass_storage.c b/drivers/usb/gadget/legacy/mass_storage.c
+index e7bfb081f111..3eb1b9fad5a0 100644
+--- a/drivers/usb/gadget/legacy/mass_storage.c
++++ b/drivers/usb/gadget/legacy/mass_storage.c
+@@ -146,10 +146,6 @@ static int msg_do_config(struct usb_configuration *c)
+ if (IS_ERR(f_msg))
+ return PTR_ERR(f_msg);
+
+- ret = fsg_common_run_thread(opts->common);
+- if (ret)
+- goto put_func;
+-
+ ret = usb_add_function(c, f_msg);
+ if (ret)
+ goto put_func;
+@@ -191,10 +187,6 @@ static int msg_bind(struct usb_composite_dev *cdev)
+ if (status)
+ goto fail;
+
+- status = fsg_common_set_nluns(opts->common, config.nluns);
+- if (status)
+- goto fail_set_nluns;
+-
+ fsg_common_set_ops(opts->common, &ops);
+
+ status = fsg_common_set_cdev(opts->common, cdev, config.can_stall);
+@@ -227,8 +219,6 @@ static int msg_bind(struct usb_composite_dev *cdev)
+ fail_string_ids:
+ fsg_common_remove_luns(opts->common);
+ fail_set_cdev:
+- fsg_common_free_luns(opts->common);
+-fail_set_nluns:
+ fsg_common_free_buffers(opts->common);
+ fail:
+ usb_put_function_instance(fi_msg);
+diff --git a/drivers/usb/gadget/legacy/multi.c b/drivers/usb/gadget/legacy/multi.c
+index b21b51f0c9fa..5b2cfdda24a8 100644
+--- a/drivers/usb/gadget/legacy/multi.c
++++ b/drivers/usb/gadget/legacy/multi.c
+@@ -151,7 +151,6 @@ static struct usb_function *f_msg_rndis;
+
+ static int rndis_do_config(struct usb_configuration *c)
+ {
+- struct fsg_opts *fsg_opts;
+ int ret;
+
+ if (gadget_is_otg(c->cdev->gadget)) {
+@@ -183,11 +182,6 @@ static int rndis_do_config(struct usb_configuration *c)
+ goto err_fsg;
+ }
+
+- fsg_opts = fsg_opts_from_func_inst(fi_msg);
+- ret = fsg_common_run_thread(fsg_opts->common);
+- if (ret)
+- goto err_run;
+-
+ ret = usb_add_function(c, f_msg_rndis);
+ if (ret)
+ goto err_run;
+@@ -239,7 +233,6 @@ static struct usb_function *f_msg_multi;
+
+ static int cdc_do_config(struct usb_configuration *c)
+ {
+- struct fsg_opts *fsg_opts;
+ int ret;
+
+ if (gadget_is_otg(c->cdev->gadget)) {
+@@ -272,11 +265,6 @@ static int cdc_do_config(struct usb_configuration *c)
+ goto err_fsg;
+ }
+
+- fsg_opts = fsg_opts_from_func_inst(fi_msg);
+- ret = fsg_common_run_thread(fsg_opts->common);
+- if (ret)
+- goto err_run;
+-
+ ret = usb_add_function(c, f_msg_multi);
+ if (ret)
+ goto err_run;
+@@ -407,10 +395,6 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
+ if (status)
+ goto fail2;
+
+- status = fsg_common_set_nluns(fsg_opts->common, config.nluns);
+- if (status)
+- goto fail_set_nluns;
+-
+ status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall);
+ if (status)
+ goto fail_set_cdev;
+@@ -448,8 +432,6 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
+ fail_string_ids:
+ fsg_common_remove_luns(fsg_opts->common);
+ fail_set_cdev:
+- fsg_common_free_luns(fsg_opts->common);
+-fail_set_nluns:
+ fsg_common_free_buffers(fsg_opts->common);
+ fail2:
+ usb_put_function_instance(fi_msg);
+diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
+index 0bbafe795a72..bbddc44ce8bc 100644
+--- a/drivers/usb/misc/usbtest.c
++++ b/drivers/usb/misc/usbtest.c
+@@ -303,11 +303,20 @@ static unsigned mod_pattern;
+ module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR);
+ MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)");
+
+-static inline void simple_fill_buf(struct urb *urb)
++static unsigned get_maxpacket(struct usb_device *udev, int pipe)
++{
++ struct usb_host_endpoint *ep;
++
++ ep = usb_pipe_endpoint(udev, pipe);
++ return le16_to_cpup(&ep->desc.wMaxPacketSize);
++}
++
++static void simple_fill_buf(struct urb *urb)
+ {
+ unsigned i;
+ u8 *buf = urb->transfer_buffer;
+ unsigned len = urb->transfer_buffer_length;
++ unsigned maxpacket;
+
+ switch (pattern) {
+ default:
+@@ -316,8 +325,9 @@ static inline void simple_fill_buf(struct urb *urb)
+ memset(buf, 0, len);
+ break;
+ case 1: /* mod63 */
++ maxpacket = get_maxpacket(urb->dev, urb->pipe);
+ for (i = 0; i < len; i++)
+- *buf++ = (u8) (i % 63);
++ *buf++ = (u8) ((i % maxpacket) % 63);
+ break;
+ }
+ }
+@@ -349,6 +359,7 @@ static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb)
+ u8 expected;
+ u8 *buf = urb->transfer_buffer;
+ unsigned len = urb->actual_length;
++ unsigned maxpacket = get_maxpacket(urb->dev, urb->pipe);
+
+ int ret = check_guard_bytes(tdev, urb);
+ if (ret)
+@@ -366,7 +377,7 @@ static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb)
+ * with set_interface or set_config.
+ */
+ case 1: /* mod63 */
+- expected = i % 63;
++ expected = (i % maxpacket) % 63;
+ break;
+ /* always fail unsupported patterns */
+ default:
+@@ -478,11 +489,14 @@ static void free_sglist(struct scatterlist *sg, int nents)
+ }
+
+ static struct scatterlist *
+-alloc_sglist(int nents, int max, int vary)
++alloc_sglist(int nents, int max, int vary, struct usbtest_dev *dev, int pipe)
+ {
+ struct scatterlist *sg;
++ unsigned int n_size = 0;
+ unsigned i;
+ unsigned size = max;
++ unsigned maxpacket =
++ get_maxpacket(interface_to_usbdev(dev->intf), pipe);
+
+ if (max == 0)
+ return NULL;
+@@ -511,7 +525,8 @@ alloc_sglist(int nents, int max, int vary)
+ break;
+ case 1:
+ for (j = 0; j < size; j++)
+- *buf++ = (u8) (j % 63);
++ *buf++ = (u8) (((j + n_size) % maxpacket) % 63);
++ n_size += size;
+ break;
+ }
+
+@@ -2175,7 +2190,8 @@ usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
+ "TEST 5: write %d sglists %d entries of %d bytes\n",
+ param->iterations,
+ param->sglen, param->length);
+- sg = alloc_sglist(param->sglen, param->length, 0);
++ sg = alloc_sglist(param->sglen, param->length,
++ 0, dev, dev->out_pipe);
+ if (!sg) {
+ retval = -ENOMEM;
+ break;
+@@ -2193,7 +2209,8 @@ usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
+ "TEST 6: read %d sglists %d entries of %d bytes\n",
+ param->iterations,
+ param->sglen, param->length);
+- sg = alloc_sglist(param->sglen, param->length, 0);
++ sg = alloc_sglist(param->sglen, param->length,
++ 0, dev, dev->in_pipe);
+ if (!sg) {
+ retval = -ENOMEM;
+ break;
+@@ -2210,7 +2227,8 @@ usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
+ "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n",
+ param->vary, param->iterations,
+ param->sglen, param->length);
+- sg = alloc_sglist(param->sglen, param->length, param->vary);
++ sg = alloc_sglist(param->sglen, param->length,
++ param->vary, dev, dev->out_pipe);
+ if (!sg) {
+ retval = -ENOMEM;
+ break;
+@@ -2227,7 +2245,8 @@ usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
+ "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n",
+ param->vary, param->iterations,
+ param->sglen, param->length);
+- sg = alloc_sglist(param->sglen, param->length, param->vary);
++ sg = alloc_sglist(param->sglen, param->length,
++ param->vary, dev, dev->in_pipe);
+ if (!sg) {
+ retval = -ENOMEM;
+ break;
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index a2b43a6e7fa7..f49e859ac5ce 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -43,8 +43,8 @@ static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int);
+ static int cp210x_tiocmset_port(struct usb_serial_port *port,
+ unsigned int, unsigned int);
+ static void cp210x_break_ctl(struct tty_struct *, int);
+-static int cp210x_startup(struct usb_serial *);
+-static void cp210x_release(struct usb_serial *);
++static int cp210x_port_probe(struct usb_serial_port *);
++static int cp210x_port_remove(struct usb_serial_port *);
+ static void cp210x_dtr_rts(struct usb_serial_port *p, int on);
+
+ static const struct usb_device_id id_table[] = {
+@@ -206,7 +206,7 @@ static const struct usb_device_id id_table[] = {
+
+ MODULE_DEVICE_TABLE(usb, id_table);
+
+-struct cp210x_serial_private {
++struct cp210x_port_private {
+ __u8 bInterfaceNumber;
+ };
+
+@@ -225,8 +225,8 @@ static struct usb_serial_driver cp210x_device = {
+ .set_termios = cp210x_set_termios,
+ .tiocmget = cp210x_tiocmget,
+ .tiocmset = cp210x_tiocmset,
+- .attach = cp210x_startup,
+- .release = cp210x_release,
++ .port_probe = cp210x_port_probe,
++ .port_remove = cp210x_port_remove,
+ .dtr_rts = cp210x_dtr_rts
+ };
+
+@@ -320,7 +320,7 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request,
+ unsigned int *data, int size)
+ {
+ struct usb_serial *serial = port->serial;
+- struct cp210x_serial_private *spriv = usb_get_serial_data(serial);
++ struct cp210x_port_private *port_priv = usb_get_serial_port_data(port);
+ __le32 *buf;
+ int result, i, length;
+
+@@ -334,7 +334,7 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request,
+ /* Issue the request, attempting to read 'size' bytes */
+ result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ request, REQTYPE_INTERFACE_TO_HOST, 0x0000,
+- spriv->bInterfaceNumber, buf, size,
++ port_priv->bInterfaceNumber, buf, size,
+ USB_CTRL_GET_TIMEOUT);
+
+ /* Convert data into an array of integers */
+@@ -365,7 +365,7 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request,
+ unsigned int *data, int size)
+ {
+ struct usb_serial *serial = port->serial;
+- struct cp210x_serial_private *spriv = usb_get_serial_data(serial);
++ struct cp210x_port_private *port_priv = usb_get_serial_port_data(port);
+ __le32 *buf;
+ int result, i, length;
+
+@@ -384,13 +384,13 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request,
+ result = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ request, REQTYPE_HOST_TO_INTERFACE, 0x0000,
+- spriv->bInterfaceNumber, buf, size,
++ port_priv->bInterfaceNumber, buf, size,
+ USB_CTRL_SET_TIMEOUT);
+ } else {
+ result = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ request, REQTYPE_HOST_TO_INTERFACE, data[0],
+- spriv->bInterfaceNumber, NULL, 0,
++ port_priv->bInterfaceNumber, NULL, 0,
+ USB_CTRL_SET_TIMEOUT);
+ }
+
+@@ -784,7 +784,7 @@ static void cp210x_set_termios(struct tty_struct *tty,
+ } else {
+ modem_ctl[0] &= ~0x7B;
+ modem_ctl[0] |= 0x01;
+- modem_ctl[1] |= 0x40;
++ modem_ctl[1] = 0x40;
+ dev_dbg(dev, "%s - flow control = NONE\n", __func__);
+ }
+
+@@ -872,29 +872,32 @@ static void cp210x_break_ctl(struct tty_struct *tty, int break_state)
+ cp210x_set_config(port, CP210X_SET_BREAK, &state, 2);
+ }
+
+-static int cp210x_startup(struct usb_serial *serial)
++static int cp210x_port_probe(struct usb_serial_port *port)
+ {
++ struct usb_serial *serial = port->serial;
+ struct usb_host_interface *cur_altsetting;
+- struct cp210x_serial_private *spriv;
++ struct cp210x_port_private *port_priv;
+
+- spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
+- if (!spriv)
++ port_priv = kzalloc(sizeof(*port_priv), GFP_KERNEL);
++ if (!port_priv)
+ return -ENOMEM;
+
+ cur_altsetting = serial->interface->cur_altsetting;
+- spriv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber;
++ port_priv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber;
+
+- usb_set_serial_data(serial, spriv);
++ usb_set_serial_port_data(port, port_priv);
+
+ return 0;
+ }
+
+-static void cp210x_release(struct usb_serial *serial)
++static int cp210x_port_remove(struct usb_serial_port *port)
+ {
+- struct cp210x_serial_private *spriv;
++ struct cp210x_port_private *port_priv;
++
++ port_priv = usb_get_serial_port_data(port);
++ kfree(port_priv);
+
+- spriv = usb_get_serial_data(serial);
+- kfree(spriv);
++ return 0;
+ }
+
+ module_usb_serial_driver(serial_drivers, id_table);
+diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
+index c0866971db2b..1947ea0e0988 100644
+--- a/drivers/usb/serial/io_edgeport.c
++++ b/drivers/usb/serial/io_edgeport.c
+@@ -2856,14 +2856,16 @@ static int edge_startup(struct usb_serial *serial)
+ /* not set up yet, so do it now */
+ edge_serial->interrupt_read_urb =
+ usb_alloc_urb(0, GFP_KERNEL);
+- if (!edge_serial->interrupt_read_urb)
+- return -ENOMEM;
++ if (!edge_serial->interrupt_read_urb) {
++ response = -ENOMEM;
++ break;
++ }
+
+ edge_serial->interrupt_in_buffer =
+ kmalloc(buffer_size, GFP_KERNEL);
+ if (!edge_serial->interrupt_in_buffer) {
+- usb_free_urb(edge_serial->interrupt_read_urb);
+- return -ENOMEM;
++ response = -ENOMEM;
++ break;
+ }
+ edge_serial->interrupt_in_endpoint =
+ endpoint->bEndpointAddress;
+@@ -2891,14 +2893,16 @@ static int edge_startup(struct usb_serial *serial)
+ /* not set up yet, so do it now */
+ edge_serial->read_urb =
+ usb_alloc_urb(0, GFP_KERNEL);
+- if (!edge_serial->read_urb)
+- return -ENOMEM;
++ if (!edge_serial->read_urb) {
++ response = -ENOMEM;
++ break;
++ }
+
+ edge_serial->bulk_in_buffer =
+ kmalloc(buffer_size, GFP_KERNEL);
+ if (!edge_serial->bulk_in_buffer) {
+- usb_free_urb(edge_serial->read_urb);
+- return -ENOMEM;
++ response = -ENOMEM;
++ break;
+ }
+ edge_serial->bulk_in_endpoint =
+ endpoint->bEndpointAddress;
+@@ -2924,9 +2928,22 @@ static int edge_startup(struct usb_serial *serial)
+ }
+ }
+
+- if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
+- dev_err(ddev, "Error - the proper endpoints were not found!\n");
+- return -ENODEV;
++ if (response || !interrupt_in_found || !bulk_in_found ||
++ !bulk_out_found) {
++ if (!response) {
++ dev_err(ddev, "expected endpoints not found\n");
++ response = -ENODEV;
++ }
++
++ usb_free_urb(edge_serial->interrupt_read_urb);
++ kfree(edge_serial->interrupt_in_buffer);
++
++ usb_free_urb(edge_serial->read_urb);
++ kfree(edge_serial->bulk_in_buffer);
++
++ kfree(edge_serial);
++
++ return response;
+ }
+
+ /* start interrupt read for this edgeport this interrupt will
+@@ -2949,16 +2966,9 @@ static void edge_disconnect(struct usb_serial *serial)
+ {
+ struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
+
+- /* stop reads and writes on all ports */
+- /* free up our endpoint stuff */
+ if (edge_serial->is_epic) {
+ usb_kill_urb(edge_serial->interrupt_read_urb);
+- usb_free_urb(edge_serial->interrupt_read_urb);
+- kfree(edge_serial->interrupt_in_buffer);
+-
+ usb_kill_urb(edge_serial->read_urb);
+- usb_free_urb(edge_serial->read_urb);
+- kfree(edge_serial->bulk_in_buffer);
+ }
+ }
+
+@@ -2971,6 +2981,16 @@ static void edge_release(struct usb_serial *serial)
+ {
+ struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
+
++ if (edge_serial->is_epic) {
++ usb_kill_urb(edge_serial->interrupt_read_urb);
++ usb_free_urb(edge_serial->interrupt_read_urb);
++ kfree(edge_serial->interrupt_in_buffer);
++
++ usb_kill_urb(edge_serial->read_urb);
++ usb_free_urb(edge_serial->read_urb);
++ kfree(edge_serial->bulk_in_buffer);
++ }
++
+ kfree(edge_serial);
+ }
+
+diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
+index e07b15ed5814..7faa901ee47f 100644
+--- a/drivers/usb/serial/keyspan.c
++++ b/drivers/usb/serial/keyspan.c
+@@ -2376,6 +2376,10 @@ static void keyspan_release(struct usb_serial *serial)
+
+ s_priv = usb_get_serial_data(serial);
+
++ /* Make sure to unlink the URBs submitted in attach. */
++ usb_kill_urb(s_priv->instat_urb);
++ usb_kill_urb(s_priv->indat_urb);
++
+ usb_free_urb(s_priv->instat_urb);
+ usb_free_urb(s_priv->indat_urb);
+ usb_free_urb(s_priv->glocont_urb);
+diff --git a/drivers/usb/serial/mxuport.c b/drivers/usb/serial/mxuport.c
+index 460a40669967..d029b2fc0f75 100644
+--- a/drivers/usb/serial/mxuport.c
++++ b/drivers/usb/serial/mxuport.c
+@@ -1263,6 +1263,15 @@ static int mxuport_attach(struct usb_serial *serial)
+ return 0;
+ }
+
++static void mxuport_release(struct usb_serial *serial)
++{
++ struct usb_serial_port *port0 = serial->port[0];
++ struct usb_serial_port *port1 = serial->port[1];
++
++ usb_serial_generic_close(port1);
++ usb_serial_generic_close(port0);
++}
++
+ static int mxuport_open(struct tty_struct *tty, struct usb_serial_port *port)
+ {
+ struct mxuport_port *mxport = usb_get_serial_port_data(port);
+@@ -1365,6 +1374,7 @@ static struct usb_serial_driver mxuport_device = {
+ .probe = mxuport_probe,
+ .port_probe = mxuport_port_probe,
+ .attach = mxuport_attach,
++ .release = mxuport_release,
+ .calc_num_ports = mxuport_calc_num_ports,
+ .open = mxuport_open,
+ .close = mxuport_close,
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 94e520de6404..f00919d579e0 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -378,18 +378,22 @@ static void option_instat_callback(struct urb *urb);
+ #define HAIER_PRODUCT_CE81B 0x10f8
+ #define HAIER_PRODUCT_CE100 0x2009
+
+-/* Cinterion (formerly Siemens) products */
+-#define SIEMENS_VENDOR_ID 0x0681
+-#define CINTERION_VENDOR_ID 0x1e2d
++/* Gemalto's Cinterion products (formerly Siemens) */
++#define SIEMENS_VENDOR_ID 0x0681
++#define CINTERION_VENDOR_ID 0x1e2d
++#define CINTERION_PRODUCT_HC25_MDMNET 0x0040
+ #define CINTERION_PRODUCT_HC25_MDM 0x0047
+-#define CINTERION_PRODUCT_HC25_MDMNET 0x0040
++#define CINTERION_PRODUCT_HC28_MDMNET 0x004A /* same for HC28J */
+ #define CINTERION_PRODUCT_HC28_MDM 0x004C
+-#define CINTERION_PRODUCT_HC28_MDMNET 0x004A /* same for HC28J */
+ #define CINTERION_PRODUCT_EU3_E 0x0051
+ #define CINTERION_PRODUCT_EU3_P 0x0052
+ #define CINTERION_PRODUCT_PH8 0x0053
+ #define CINTERION_PRODUCT_AHXX 0x0055
+ #define CINTERION_PRODUCT_PLXX 0x0060
++#define CINTERION_PRODUCT_PH8_2RMNET 0x0082
++#define CINTERION_PRODUCT_PH8_AUDIO 0x0083
++#define CINTERION_PRODUCT_AHXX_2RMNET 0x0084
++#define CINTERION_PRODUCT_AHXX_AUDIO 0x0085
+
+ /* Olivetti products */
+ #define OLIVETTI_VENDOR_ID 0x0b3c
+@@ -641,6 +645,10 @@ static const struct option_blacklist_info telit_le922_blacklist_usbcfg3 = {
+ .reserved = BIT(1) | BIT(2) | BIT(3),
+ };
+
++static const struct option_blacklist_info cinterion_rmnet2_blacklist = {
++ .reserved = BIT(4) | BIT(5),
++};
++
+ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
+ { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
+@@ -1614,7 +1622,79 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&net_intf3_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0178, 0xff, 0xff, 0xff),
+ .driver_info = (kernel_ulong_t)&net_intf3_blacklist },
+- { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffe9, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff42, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff43, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff44, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff45, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff46, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff47, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff48, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff49, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff4a, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff4b, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff4c, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff4d, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff4e, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff4f, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff50, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff51, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff52, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff53, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff54, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff55, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff56, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff57, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff58, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff59, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff5a, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff5b, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff5c, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff5d, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff5e, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff5f, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff60, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff61, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff62, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff63, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff64, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff65, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff66, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff67, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff68, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff69, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff6a, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff6b, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff6c, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff6d, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff6e, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff6f, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff70, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff71, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff72, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff73, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff74, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff75, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff76, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff77, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff78, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff79, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff7a, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff7b, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff7c, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff7d, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff7e, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff7f, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff80, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff81, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff82, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff83, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff84, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff85, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff86, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff87, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff88, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff89, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff8a, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff8b, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff8c, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff8d, 0xff, 0xff, 0xff) },
+@@ -1625,6 +1705,61 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff92, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff93, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff94, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff9f, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa0, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa1, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa2, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa3, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa4, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa5, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa6, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa7, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa8, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffa9, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffaa, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffab, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffac, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffae, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffaf, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb0, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb1, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb2, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb3, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb4, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb5, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb6, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb7, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb8, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffb9, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffba, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffbb, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffbc, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffbd, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffbe, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffbf, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc0, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc1, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc2, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc3, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc4, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc5, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc6, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc7, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc8, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffc9, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffca, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffcb, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffcc, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffcd, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffce, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffcf, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffd0, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffd1, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffd2, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffd3, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffd4, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffd5, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffe9, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffec, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xffee, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xfff6, 0xff, 0xff, 0xff) },
+@@ -1724,7 +1859,13 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX, 0xff) },
+ { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PLXX),
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+- { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) },
++ { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8_2RMNET, 0xff),
++ .driver_info = (kernel_ulong_t)&cinterion_rmnet2_blacklist },
++ { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8_AUDIO, 0xff),
++ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
++ { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX_2RMNET, 0xff) },
++ { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX_AUDIO, 0xff) },
++ { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) },
+ { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDMNET) },
+ { USB_DEVICE(SIEMENS_VENDOR_ID, CINTERION_PRODUCT_HC25_MDM) },
+ { USB_DEVICE(SIEMENS_VENDOR_ID, CINTERION_PRODUCT_HC25_MDMNET) },
+diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
+index 504f5bff79c0..b18974cbd995 100644
+--- a/drivers/usb/serial/quatech2.c
++++ b/drivers/usb/serial/quatech2.c
+@@ -141,6 +141,7 @@ static void qt2_release(struct usb_serial *serial)
+
+ serial_priv = usb_get_serial_data(serial);
+
++ usb_kill_urb(serial_priv->read_urb);
+ usb_free_urb(serial_priv->read_urb);
+ kfree(serial_priv->read_buffer);
+ kfree(serial_priv);
+diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
+index 511aab3b9206..4bf7a34f6a4c 100644
+--- a/drivers/xen/events/events_base.c
++++ b/drivers/xen/events/events_base.c
+@@ -486,7 +486,8 @@ static void eoi_pirq(struct irq_data *data)
+ if (!VALID_EVTCHN(evtchn))
+ return;
+
+- if (unlikely(irqd_is_setaffinity_pending(data))) {
++ if (unlikely(irqd_is_setaffinity_pending(data)) &&
++ likely(!irqd_irq_disabled(data))) {
+ int masked = test_and_set_mask(evtchn);
+
+ clear_evtchn(evtchn);
+@@ -1373,7 +1374,8 @@ static void ack_dynirq(struct irq_data *data)
+ if (!VALID_EVTCHN(evtchn))
+ return;
+
+- if (unlikely(irqd_is_setaffinity_pending(data))) {
++ if (unlikely(irqd_is_setaffinity_pending(data)) &&
++ likely(!irqd_irq_disabled(data))) {
+ int masked = test_and_set_mask(evtchn);
+
+ clear_evtchn(evtchn);
+diff --git a/fs/affs/super.c b/fs/affs/super.c
+index 3f89c9e05b40..cc7571201b4f 100644
+--- a/fs/affs/super.c
++++ b/fs/affs/super.c
+@@ -526,7 +526,7 @@ affs_remount(struct super_block *sb, int *flags, char *data)
+ char *prefix = NULL;
+
+ new_opts = kstrdup(data, GFP_KERNEL);
+- if (!new_opts)
++ if (data && !new_opts)
+ return -ENOMEM;
+
+ pr_debug("%s(flags=0x%x,opts=\"%s\")\n", __func__, *flags, data);
+@@ -544,7 +544,8 @@ affs_remount(struct super_block *sb, int *flags, char *data)
+ }
+
+ flush_delayed_work(&sbi->sb_work);
+- replace_mount_options(sb, new_opts);
++ if (new_opts)
++ replace_mount_options(sb, new_opts);
+
+ sbi->s_flags = mount_flags;
+ sbi->s_mode = mode;
+diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
+index 699944a07491..53cbbedf21d1 100644
+--- a/fs/btrfs/ctree.h
++++ b/fs/btrfs/ctree.h
+@@ -3956,6 +3956,7 @@ void btrfs_test_inode_set_ops(struct inode *inode);
+
+ /* ioctl.c */
+ long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
++long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+ void btrfs_update_iflags(struct inode *inode);
+ void btrfs_inherit_iflags(struct inode *inode, struct inode *dir);
+ int btrfs_is_empty_uuid(u8 *uuid);
+diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
+index 2b0d84d32db4..2b230e9b3bad 100644
+--- a/fs/btrfs/file.c
++++ b/fs/btrfs/file.c
+@@ -2819,7 +2819,7 @@ const struct file_operations btrfs_file_operations = {
+ .fallocate = btrfs_fallocate,
+ .unlocked_ioctl = btrfs_ioctl,
+ #ifdef CONFIG_COMPAT
+- .compat_ioctl = btrfs_ioctl,
++ .compat_ioctl = btrfs_compat_ioctl,
+ #endif
+ };
+
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index f751ab47e9a5..c4771af7fd6f 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -9894,7 +9894,7 @@ static const struct file_operations btrfs_dir_file_operations = {
+ .iterate = btrfs_real_readdir,
+ .unlocked_ioctl = btrfs_ioctl,
+ #ifdef CONFIG_COMPAT
+- .compat_ioctl = btrfs_ioctl,
++ .compat_ioctl = btrfs_compat_ioctl,
+ #endif
+ .release = btrfs_release_file,
+ .fsync = btrfs_sync_file,
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index 5189d54417ab..43502247e176 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -5492,3 +5492,24 @@ long btrfs_ioctl(struct file *file, unsigned int
+
+ return -ENOTTY;
+ }
++
++#ifdef CONFIG_COMPAT
++long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++ switch (cmd) {
++ case FS_IOC32_GETFLAGS:
++ cmd = FS_IOC_GETFLAGS;
++ break;
++ case FS_IOC32_SETFLAGS:
++ cmd = FS_IOC_SETFLAGS;
++ break;
++ case FS_IOC32_GETVERSION:
++ cmd = FS_IOC_GETVERSION;
++ break;
++ default:
++ return -ENOIOCTLCMD;
++ }
++
++ return btrfs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
++}
++#endif
+diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
+index f4cf200b3c76..79450fa66d16 100644
+--- a/fs/cifs/cifs_spnego.c
++++ b/fs/cifs/cifs_spnego.c
+@@ -24,10 +24,13 @@
+ #include <linux/string.h>
+ #include <keys/user-type.h>
+ #include <linux/key-type.h>
++#include <linux/keyctl.h>
+ #include <linux/inet.h>
+ #include "cifsglob.h"
+ #include "cifs_spnego.h"
+ #include "cifs_debug.h"
++#include "cifsproto.h"
++static const struct cred *spnego_cred;
+
+ /* create a new cifs key */
+ static int
+@@ -102,6 +105,7 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
+ size_t desc_len;
+ struct key *spnego_key;
+ const char *hostname = server->hostname;
++ const struct cred *saved_cred;
+
+ /* length of fields (with semicolons): ver=0xyz ip4=ipaddress
+ host=hostname sec=mechanism uid=0xFF user=username */
+@@ -163,7 +167,9 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
+ sprintf(dp, ";pid=0x%x", current->pid);
+
+ cifs_dbg(FYI, "key description = %s\n", description);
++ saved_cred = override_creds(spnego_cred);
+ spnego_key = request_key(&cifs_spnego_key_type, description, "");
++ revert_creds(saved_cred);
+
+ #ifdef CONFIG_CIFS_DEBUG2
+ if (cifsFYI && !IS_ERR(spnego_key)) {
+@@ -177,3 +183,64 @@ out:
+ kfree(description);
+ return spnego_key;
+ }
++
++int
++init_cifs_spnego(void)
++{
++ struct cred *cred;
++ struct key *keyring;
++ int ret;
++
++ cifs_dbg(FYI, "Registering the %s key type\n",
++ cifs_spnego_key_type.name);
++
++ /*
++ * Create an override credential set with special thread keyring for
++ * spnego upcalls.
++ */
++
++ cred = prepare_kernel_cred(NULL);
++ if (!cred)
++ return -ENOMEM;
++
++ keyring = keyring_alloc(".cifs_spnego",
++ GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
++ (KEY_POS_ALL & ~KEY_POS_SETATTR) |
++ KEY_USR_VIEW | KEY_USR_READ,
++ KEY_ALLOC_NOT_IN_QUOTA, NULL);
++ if (IS_ERR(keyring)) {
++ ret = PTR_ERR(keyring);
++ goto failed_put_cred;
++ }
++
++ ret = register_key_type(&cifs_spnego_key_type);
++ if (ret < 0)
++ goto failed_put_key;
++
++ /*
++ * instruct request_key() to use this special keyring as a cache for
++ * the results it looks up
++ */
++ set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags);
++ cred->thread_keyring = keyring;
++ cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;
++ spnego_cred = cred;
++
++ cifs_dbg(FYI, "cifs spnego keyring: %d\n", key_serial(keyring));
++ return 0;
++
++failed_put_key:
++ key_put(keyring);
++failed_put_cred:
++ put_cred(cred);
++ return ret;
++}
++
++void
++exit_cifs_spnego(void)
++{
++ key_revoke(spnego_cred->thread_keyring);
++ unregister_key_type(&cifs_spnego_key_type);
++ put_cred(spnego_cred);
++ cifs_dbg(FYI, "Unregistered %s key type\n", cifs_spnego_key_type.name);
++}
+diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
+index 6a1119e87fbb..fe24e22fc154 100644
+--- a/fs/cifs/cifsfs.c
++++ b/fs/cifs/cifsfs.c
+@@ -1238,7 +1238,7 @@ init_cifs(void)
+ goto out_destroy_mids;
+
+ #ifdef CONFIG_CIFS_UPCALL
+- rc = register_key_type(&cifs_spnego_key_type);
++ rc = init_cifs_spnego();
+ if (rc)
+ goto out_destroy_request_bufs;
+ #endif /* CONFIG_CIFS_UPCALL */
+@@ -1261,7 +1261,7 @@ out_init_cifs_idmap:
+ out_register_key_type:
+ #endif
+ #ifdef CONFIG_CIFS_UPCALL
+- unregister_key_type(&cifs_spnego_key_type);
++ exit_cifs_spnego();
+ out_destroy_request_bufs:
+ #endif
+ cifs_destroy_request_bufs();
+diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
+index c63fd1dde25b..f730c065df34 100644
+--- a/fs/cifs/cifsproto.h
++++ b/fs/cifs/cifsproto.h
+@@ -60,6 +60,8 @@ do { \
+ } while (0)
+ extern int init_cifs_idmap(void);
+ extern void exit_cifs_idmap(void);
++extern int init_cifs_spnego(void);
++extern void exit_cifs_spnego(void);
+ extern char *build_path_from_dentry(struct dentry *);
+ extern char *cifs_build_path_to_root(struct smb_vol *vol,
+ struct cifs_sb_info *cifs_sb,
+diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
+index bce6fdcd5d48..8ffda5084dbf 100644
+--- a/fs/cifs/sess.c
++++ b/fs/cifs/sess.c
+@@ -400,19 +400,27 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
+ sec_blob->LmChallengeResponse.MaximumLength = 0;
+
+ sec_blob->NtChallengeResponse.BufferOffset = cpu_to_le32(tmp - pbuffer);
+- rc = setup_ntlmv2_rsp(ses, nls_cp);
+- if (rc) {
+- cifs_dbg(VFS, "Error %d during NTLMSSP authentication\n", rc);
+- goto setup_ntlmv2_ret;
++ if (ses->user_name != NULL) {
++ rc = setup_ntlmv2_rsp(ses, nls_cp);
++ if (rc) {
++ cifs_dbg(VFS, "Error %d during NTLMSSP authentication\n", rc);
++ goto setup_ntlmv2_ret;
++ }
++ memcpy(tmp, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
++ ses->auth_key.len - CIFS_SESS_KEY_SIZE);
++ tmp += ses->auth_key.len - CIFS_SESS_KEY_SIZE;
++
++ sec_blob->NtChallengeResponse.Length =
++ cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
++ sec_blob->NtChallengeResponse.MaximumLength =
++ cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
++ } else {
++ /*
++ * don't send an NT Response for anonymous access
++ */
++ sec_blob->NtChallengeResponse.Length = 0;
++ sec_blob->NtChallengeResponse.MaximumLength = 0;
+ }
+- memcpy(tmp, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
+- ses->auth_key.len - CIFS_SESS_KEY_SIZE);
+- tmp += ses->auth_key.len - CIFS_SESS_KEY_SIZE;
+-
+- sec_blob->NtChallengeResponse.Length =
+- cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
+- sec_blob->NtChallengeResponse.MaximumLength =
+- cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
+
+ if (ses->domainName == NULL) {
+ sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer);
+@@ -670,20 +678,24 @@ sess_auth_lanman(struct sess_data *sess_data)
+
+ pSMB->req.hdr.Flags2 &= ~SMBFLG2_UNICODE;
+
+- /* no capabilities flags in old lanman negotiation */
+- pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_AUTH_RESP_SIZE);
+-
+- /* Calculate hash with password and copy into bcc_ptr.
+- * Encryption Key (stored as in cryptkey) gets used if the
+- * security mode bit in Negottiate Protocol response states
+- * to use challenge/response method (i.e. Password bit is 1).
+- */
+- rc = calc_lanman_hash(ses->password, ses->server->cryptkey,
+- ses->server->sec_mode & SECMODE_PW_ENCRYPT ?
+- true : false, lnm_session_key);
+-
+- memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_AUTH_RESP_SIZE);
+- bcc_ptr += CIFS_AUTH_RESP_SIZE;
++ if (ses->user_name != NULL) {
++ /* no capabilities flags in old lanman negotiation */
++ pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_AUTH_RESP_SIZE);
++
++ /* Calculate hash with password and copy into bcc_ptr.
++ * Encryption Key (stored as in cryptkey) gets used if the
++ * security mode bit in Negottiate Protocol response states
++ * to use challenge/response method (i.e. Password bit is 1).
++ */
++ rc = calc_lanman_hash(ses->password, ses->server->cryptkey,
++ ses->server->sec_mode & SECMODE_PW_ENCRYPT ?
++ true : false, lnm_session_key);
++
++ memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_AUTH_RESP_SIZE);
++ bcc_ptr += CIFS_AUTH_RESP_SIZE;
++ } else {
++ pSMB->old_req.PasswordLength = 0;
++ }
+
+ /*
+ * can not sign if LANMAN negotiated so no need
+@@ -769,26 +781,31 @@ sess_auth_ntlm(struct sess_data *sess_data)
+ capabilities = cifs_ssetup_hdr(ses, pSMB);
+
+ pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
+- pSMB->req_no_secext.CaseInsensitivePasswordLength =
+- cpu_to_le16(CIFS_AUTH_RESP_SIZE);
+- pSMB->req_no_secext.CaseSensitivePasswordLength =
+- cpu_to_le16(CIFS_AUTH_RESP_SIZE);
+-
+- /* calculate ntlm response and session key */
+- rc = setup_ntlm_response(ses, sess_data->nls_cp);
+- if (rc) {
+- cifs_dbg(VFS, "Error %d during NTLM authentication\n",
+- rc);
+- goto out;
+- }
++ if (ses->user_name != NULL) {
++ pSMB->req_no_secext.CaseInsensitivePasswordLength =
++ cpu_to_le16(CIFS_AUTH_RESP_SIZE);
++ pSMB->req_no_secext.CaseSensitivePasswordLength =
++ cpu_to_le16(CIFS_AUTH_RESP_SIZE);
++
++ /* calculate ntlm response and session key */
++ rc = setup_ntlm_response(ses, sess_data->nls_cp);
++ if (rc) {
++ cifs_dbg(VFS, "Error %d during NTLM authentication\n",
++ rc);
++ goto out;
++ }
+
+- /* copy ntlm response */
+- memcpy(bcc_ptr, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
+- CIFS_AUTH_RESP_SIZE);
+- bcc_ptr += CIFS_AUTH_RESP_SIZE;
+- memcpy(bcc_ptr, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
+- CIFS_AUTH_RESP_SIZE);
+- bcc_ptr += CIFS_AUTH_RESP_SIZE;
++ /* copy ntlm response */
++ memcpy(bcc_ptr, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
++ CIFS_AUTH_RESP_SIZE);
++ bcc_ptr += CIFS_AUTH_RESP_SIZE;
++ memcpy(bcc_ptr, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
++ CIFS_AUTH_RESP_SIZE);
++ bcc_ptr += CIFS_AUTH_RESP_SIZE;
++ } else {
++ pSMB->req_no_secext.CaseInsensitivePasswordLength = 0;
++ pSMB->req_no_secext.CaseSensitivePasswordLength = 0;
++ }
+
+ if (ses->capabilities & CAP_UNICODE) {
+ /* unicode strings must be word aligned */
+@@ -878,22 +895,26 @@ sess_auth_ntlmv2(struct sess_data *sess_data)
+ /* LM2 password would be here if we supported it */
+ pSMB->req_no_secext.CaseInsensitivePasswordLength = 0;
+
+- /* calculate nlmv2 response and session key */
+- rc = setup_ntlmv2_rsp(ses, sess_data->nls_cp);
+- if (rc) {
+- cifs_dbg(VFS, "Error %d during NTLMv2 authentication\n", rc);
+- goto out;
+- }
++ if (ses->user_name != NULL) {
++ /* calculate nlmv2 response and session key */
++ rc = setup_ntlmv2_rsp(ses, sess_data->nls_cp);
++ if (rc) {
++ cifs_dbg(VFS, "Error %d during NTLMv2 authentication\n", rc);
++ goto out;
++ }
+
+- memcpy(bcc_ptr, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
+- ses->auth_key.len - CIFS_SESS_KEY_SIZE);
+- bcc_ptr += ses->auth_key.len - CIFS_SESS_KEY_SIZE;
++ memcpy(bcc_ptr, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
++ ses->auth_key.len - CIFS_SESS_KEY_SIZE);
++ bcc_ptr += ses->auth_key.len - CIFS_SESS_KEY_SIZE;
+
+- /* set case sensitive password length after tilen may get
+- * assigned, tilen is 0 otherwise.
+- */
+- pSMB->req_no_secext.CaseSensitivePasswordLength =
+- cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
++ /* set case sensitive password length after tilen may get
++ * assigned, tilen is 0 otherwise.
++ */
++ pSMB->req_no_secext.CaseSensitivePasswordLength =
++ cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
++ } else {
++ pSMB->req_no_secext.CaseSensitivePasswordLength = 0;
++ }
+
+ if (ses->capabilities & CAP_UNICODE) {
+ if (sess_data->iov[0].iov_len % 2) {
+diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h
+index bc0bb9c34f72..0ffa18094335 100644
+--- a/fs/cifs/smb2glob.h
++++ b/fs/cifs/smb2glob.h
+@@ -44,6 +44,7 @@
+ #define SMB2_OP_DELETE 7
+ #define SMB2_OP_HARDLINK 8
+ #define SMB2_OP_SET_EOF 9
++#define SMB2_OP_RMDIR 10
+
+ /* Used when constructing chained read requests. */
+ #define CHAINED_REQUEST 1
+diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
+index 899bbc86f73e..4f0231e685a9 100644
+--- a/fs/cifs/smb2inode.c
++++ b/fs/cifs/smb2inode.c
+@@ -80,6 +80,10 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
+ * SMB2_open() call.
+ */
+ break;
++ case SMB2_OP_RMDIR:
++ tmprc = SMB2_rmdir(xid, tcon, fid.persistent_fid,
++ fid.volatile_fid);
++ break;
+ case SMB2_OP_RENAME:
+ tmprc = SMB2_rename(xid, tcon, fid.persistent_fid,
+ fid.volatile_fid, (__le16 *)data);
+@@ -191,8 +195,8 @@ smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
+ struct cifs_sb_info *cifs_sb)
+ {
+ return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
+- CREATE_NOT_FILE | CREATE_DELETE_ON_CLOSE,
+- NULL, SMB2_OP_DELETE);
++ CREATE_NOT_FILE,
++ NULL, SMB2_OP_RMDIR);
+ }
+
+ int
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 657a9c5c4fff..14e845e8996f 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -2384,6 +2384,22 @@ SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
+ }
+
+ int
++SMB2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,
++ u64 persistent_fid, u64 volatile_fid)
++{
++ __u8 delete_pending = 1;
++ void *data;
++ unsigned int size;
++
++ data = &delete_pending;
++ size = 1; /* sizeof __u8 */
++
++ return send_set_info(xid, tcon, persistent_fid, volatile_fid,
++ current->tgid, FILE_DISPOSITION_INFORMATION, 1, &data,
++ &size);
++}
++
++int
+ SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid, __le16 *target_file)
+ {
+diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
+index 79dc650c18b2..9bc59f9c12fb 100644
+--- a/fs/cifs/smb2proto.h
++++ b/fs/cifs/smb2proto.h
+@@ -140,6 +140,8 @@ extern int SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
+ extern int SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid,
+ __le16 *target_file);
++extern int SMB2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,
++ u64 persistent_fid, u64 volatile_fid);
+ extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid,
+ __le16 *target_file);
+diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
+index 1eaa6cb96cd0..3fcdb2e9d228 100644
+--- a/fs/ext4/ialloc.c
++++ b/fs/ext4/ialloc.c
+@@ -1112,22 +1112,20 @@ struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
+ unsigned long max_ino = le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count);
+ ext4_group_t block_group;
+ int bit;
+- struct buffer_head *bitmap_bh;
++ struct buffer_head *bitmap_bh = NULL;
+ struct inode *inode = NULL;
+- long err = -EIO;
++ int err = -EIO;
+
+- /* Error cases - e2fsck has already cleaned up for us */
+- if (ino > max_ino) {
+- ext4_warning(sb, "bad orphan ino %lu! e2fsck was run?", ino);
+- goto error;
+- }
++ if (ino < EXT4_FIRST_INO(sb) || ino > max_ino)
++ goto bad_orphan;
+
+ block_group = (ino - 1) / EXT4_INODES_PER_GROUP(sb);
+ bit = (ino - 1) % EXT4_INODES_PER_GROUP(sb);
+ bitmap_bh = ext4_read_inode_bitmap(sb, block_group);
+ if (!bitmap_bh) {
+- ext4_warning(sb, "inode bitmap error for orphan %lu", ino);
+- goto error;
++ ext4_error(sb, "inode bitmap error %ld for orphan %lu",
++ ino, PTR_ERR(bitmap_bh));
++ return (struct inode *) bitmap_bh;
+ }
+
+ /* Having the inode bit set should be a 100% indicator that this
+@@ -1138,15 +1136,21 @@ struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
+ goto bad_orphan;
+
+ inode = ext4_iget(sb, ino);
+- if (IS_ERR(inode))
+- goto iget_failed;
++ if (IS_ERR(inode)) {
++ err = PTR_ERR(inode);
++ ext4_error(sb, "couldn't read orphan inode %lu (err %d)",
++ ino, err);
++ return inode;
++ }
+
+ /*
+- * If the orphans has i_nlinks > 0 then it should be able to be
+- * truncated, otherwise it won't be removed from the orphan list
+- * during processing and an infinite loop will result.
++ * If the orphans has i_nlinks > 0 then it should be able to
++ * be truncated, otherwise it won't be removed from the orphan
++ * list during processing and an infinite loop will result.
++ * Similarly, it must not be a bad inode.
+ */
+- if (inode->i_nlink && !ext4_can_truncate(inode))
++ if ((inode->i_nlink && !ext4_can_truncate(inode)) ||
++ is_bad_inode(inode))
+ goto bad_orphan;
+
+ if (NEXT_ORPHAN(inode) > max_ino)
+@@ -1154,29 +1158,25 @@ struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
+ brelse(bitmap_bh);
+ return inode;
+
+-iget_failed:
+- err = PTR_ERR(inode);
+- inode = NULL;
+ bad_orphan:
+- ext4_warning(sb, "bad orphan inode %lu! e2fsck was run?", ino);
+- printk(KERN_WARNING "ext4_test_bit(bit=%d, block=%llu) = %d\n",
+- bit, (unsigned long long)bitmap_bh->b_blocknr,
+- ext4_test_bit(bit, bitmap_bh->b_data));
+- printk(KERN_WARNING "inode=%p\n", inode);
++ ext4_error(sb, "bad orphan inode %lu", ino);
++ if (bitmap_bh)
++ printk(KERN_ERR "ext4_test_bit(bit=%d, block=%llu) = %d\n",
++ bit, (unsigned long long)bitmap_bh->b_blocknr,
++ ext4_test_bit(bit, bitmap_bh->b_data));
+ if (inode) {
+- printk(KERN_WARNING "is_bad_inode(inode)=%d\n",
++ printk(KERN_ERR "is_bad_inode(inode)=%d\n",
+ is_bad_inode(inode));
+- printk(KERN_WARNING "NEXT_ORPHAN(inode)=%u\n",
++ printk(KERN_ERR "NEXT_ORPHAN(inode)=%u\n",
+ NEXT_ORPHAN(inode));
+- printk(KERN_WARNING "max_ino=%lu\n", max_ino);
+- printk(KERN_WARNING "i_nlink=%u\n", inode->i_nlink);
++ printk(KERN_ERR "max_ino=%lu\n", max_ino);
++ printk(KERN_ERR "i_nlink=%u\n", inode->i_nlink);
+ /* Avoid freeing blocks if we got a bad deleted inode */
+ if (inode->i_nlink == 0)
+ inode->i_blocks = 0;
+ iput(inode);
+ }
+ brelse(bitmap_bh);
+-error:
+ return ERR_PTR(err);
+ }
+
+diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
+index 41260489d3bc..5b58e266892b 100644
+--- a/fs/ext4/mballoc.c
++++ b/fs/ext4/mballoc.c
+@@ -1248,6 +1248,7 @@ static void ext4_mb_unload_buddy(struct ext4_buddy *e4b)
+ static int mb_find_order_for_block(struct ext4_buddy *e4b, int block)
+ {
+ int order = 1;
++ int bb_incr = 1 << (e4b->bd_blkbits - 1);
+ void *bb;
+
+ BUG_ON(e4b->bd_bitmap == e4b->bd_buddy);
+@@ -1260,7 +1261,8 @@ static int mb_find_order_for_block(struct ext4_buddy *e4b, int block)
+ /* this block is part of buddy of order 'order' */
+ return order;
+ }
+- bb += 1 << (e4b->bd_blkbits - order);
++ bb += bb_incr;
++ bb_incr >>= 1;
+ order++;
+ }
+ return 0;
+@@ -2553,7 +2555,7 @@ int ext4_mb_init(struct super_block *sb)
+ {
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ unsigned i, j;
+- unsigned offset;
++ unsigned offset, offset_incr;
+ unsigned max;
+ int ret;
+
+@@ -2582,11 +2584,13 @@ int ext4_mb_init(struct super_block *sb)
+
+ i = 1;
+ offset = 0;
++ offset_incr = 1 << (sb->s_blocksize_bits - 1);
+ max = sb->s_blocksize << 2;
+ do {
+ sbi->s_mb_offsets[i] = offset;
+ sbi->s_mb_maxs[i] = max;
+- offset += 1 << (sb->s_blocksize_bits - i);
++ offset += offset_incr;
++ offset_incr = offset_incr >> 1;
+ max = max >> 1;
+ i++;
+ } while (i <= sb->s_blocksize_bits + 1);
+diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
+index 814f3beb4369..03482c01fb3e 100644
+--- a/fs/ext4/namei.c
++++ b/fs/ext4/namei.c
+@@ -2897,7 +2897,7 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode)
+ * list entries can cause panics at unmount time.
+ */
+ mutex_lock(&sbi->s_orphan_lock);
+- list_del(&EXT4_I(inode)->i_orphan);
++ list_del_init(&EXT4_I(inode)->i_orphan);
+ mutex_unlock(&sbi->s_orphan_lock);
+ }
+ }
+diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
+index 8685c655737f..bc6e5c5da88c 100644
+--- a/fs/hpfs/super.c
++++ b/fs/hpfs/super.c
+@@ -15,6 +15,7 @@
+ #include <linux/sched.h>
+ #include <linux/bitmap.h>
+ #include <linux/slab.h>
++#include <linux/seq_file.h>
+
+ /* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */
+
+@@ -426,10 +427,6 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
+ int lowercase, eas, chk, errs, chkdsk, timeshift;
+ int o;
+ struct hpfs_sb_info *sbi = hpfs_sb(s);
+- char *new_opts = kstrdup(data, GFP_KERNEL);
+-
+- if (!new_opts)
+- return -ENOMEM;
+
+ sync_filesystem(s);
+
+@@ -466,17 +463,44 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
+
+ if (!(*flags & MS_RDONLY)) mark_dirty(s, 1);
+
+- replace_mount_options(s, new_opts);
+-
+ hpfs_unlock(s);
+ return 0;
+
+ out_err:
+ hpfs_unlock(s);
+- kfree(new_opts);
+ return -EINVAL;
+ }
+
++static int hpfs_show_options(struct seq_file *seq, struct dentry *root)
++{
++ struct hpfs_sb_info *sbi = hpfs_sb(root->d_sb);
++
++ seq_printf(seq, ",uid=%u", from_kuid_munged(&init_user_ns, sbi->sb_uid));
++ seq_printf(seq, ",gid=%u", from_kgid_munged(&init_user_ns, sbi->sb_gid));
++ seq_printf(seq, ",umask=%03o", (~sbi->sb_mode & 0777));
++ if (sbi->sb_lowercase)
++ seq_printf(seq, ",case=lower");
++ if (!sbi->sb_chk)
++ seq_printf(seq, ",check=none");
++ if (sbi->sb_chk == 2)
++ seq_printf(seq, ",check=strict");
++ if (!sbi->sb_err)
++ seq_printf(seq, ",errors=continue");
++ if (sbi->sb_err == 2)
++ seq_printf(seq, ",errors=panic");
++ if (!sbi->sb_chkdsk)
++ seq_printf(seq, ",chkdsk=no");
++ if (sbi->sb_chkdsk == 2)
++ seq_printf(seq, ",chkdsk=always");
++ if (!sbi->sb_eas)
++ seq_printf(seq, ",eas=no");
++ if (sbi->sb_eas == 1)
++ seq_printf(seq, ",eas=ro");
++ if (sbi->sb_timeshift)
++ seq_printf(seq, ",timeshift=%d", sbi->sb_timeshift);
++ return 0;
++}
++
+ /* Super operations */
+
+ static const struct super_operations hpfs_sops =
+@@ -487,7 +511,7 @@ static const struct super_operations hpfs_sops =
+ .put_super = hpfs_put_super,
+ .statfs = hpfs_statfs,
+ .remount_fs = hpfs_remount_fs,
+- .show_options = generic_show_options,
++ .show_options = hpfs_show_options,
+ };
+
+ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
+@@ -510,8 +534,6 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
+
+ int o;
+
+- save_mount_options(s, options);
+-
+ sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
+ if (!sbi) {
+ return -ENOMEM;
+diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
+index 4daaa662337b..30c42ed58fc9 100644
+--- a/fs/xfs/libxfs/xfs_format.h
++++ b/fs/xfs/libxfs/xfs_format.h
+@@ -754,7 +754,7 @@ typedef struct xfs_agfl {
+ __be64 agfl_lsn;
+ __be32 agfl_crc;
+ __be32 agfl_bno[]; /* actually XFS_AGFL_SIZE(mp) */
+-} xfs_agfl_t;
++} __attribute__((packed)) xfs_agfl_t;
+
+ #define XFS_AGFL_CRC_OFF offsetof(struct xfs_agfl, agfl_crc)
+
+diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
+index cb7e8a29dfb6..1a89b3417989 100644
+--- a/fs/xfs/xfs_fsops.c
++++ b/fs/xfs/xfs_fsops.c
+@@ -241,8 +241,8 @@ xfs_growfs_data_private(
+ agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp));
+ agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1);
+ agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1);
+- agf->agf_flfirst = 0;
+- agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1);
++ agf->agf_flfirst = cpu_to_be32(1);
++ agf->agf_fllast = 0;
+ agf->agf_flcount = 0;
+ tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp);
+ agf->agf_freeblks = cpu_to_be32(tmpsize);
+diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
+index 539a85fddbc2..c29f34253e2b 100644
+--- a/fs/xfs/xfs_inode.c
++++ b/fs/xfs/xfs_inode.c
+@@ -3236,13 +3236,14 @@ xfs_iflush_cluster(
+ * We need to check under the i_flags_lock for a valid inode
+ * here. Skip it if it is not valid or the wrong inode.
+ */
+- spin_lock(&ip->i_flags_lock);
+- if (!ip->i_ino ||
++ spin_lock(&iq->i_flags_lock);
++ if (!iq->i_ino ||
++ __xfs_iflags_test(iq, XFS_ISTALE) ||
+ (XFS_INO_TO_AGINO(mp, iq->i_ino) & mask) != first_index) {
+- spin_unlock(&ip->i_flags_lock);
++ spin_unlock(&iq->i_flags_lock);
+ continue;
+ }
+- spin_unlock(&ip->i_flags_lock);
++ spin_unlock(&iq->i_flags_lock);
+
+ /*
+ * Do an un-protected check to see if the inode is dirty and
+@@ -3358,7 +3359,7 @@ xfs_iflush(
+ struct xfs_buf **bpp)
+ {
+ struct xfs_mount *mp = ip->i_mount;
+- struct xfs_buf *bp;
++ struct xfs_buf *bp = NULL;
+ struct xfs_dinode *dip;
+ int error;
+
+@@ -3400,14 +3401,22 @@ xfs_iflush(
+ }
+
+ /*
+- * Get the buffer containing the on-disk inode.
++ * Get the buffer containing the on-disk inode. We are doing a try-lock
++ * operation here, so we may get an EAGAIN error. In that case, we
++ * simply want to return with the inode still dirty.
++ *
++ * If we get any other error, we effectively have a corruption situation
++ * and we cannot flush the inode, so we treat it the same as failing
++ * xfs_iflush_int().
+ */
+ error = xfs_imap_to_bp(mp, NULL, &ip->i_imap, &dip, &bp, XBF_TRYLOCK,
+ 0);
+- if (error || !bp) {
++ if (error == -EAGAIN) {
+ xfs_ifunlock(ip);
+ return error;
+ }
++ if (error)
++ goto corrupt_out;
+
+ /*
+ * First flush out the inode that xfs_iflush was called with.
+@@ -3435,7 +3444,8 @@ xfs_iflush(
+ return 0;
+
+ corrupt_out:
+- xfs_buf_relse(bp);
++ if (bp)
++ xfs_buf_relse(bp);
+ xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
+ cluster_corrupt_out:
+ error = -EFSCORRUPTED;
+diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
+index 65a45372fb1f..2a517576f2bc 100644
+--- a/fs/xfs/xfs_super.c
++++ b/fs/xfs/xfs_super.c
+@@ -1233,6 +1233,16 @@ xfs_fs_remount(
+ return -EINVAL;
+ }
+
++ if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
++ xfs_sb_has_ro_compat_feature(sbp,
++ XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) {
++ xfs_warn(mp,
++"ro->rw transition prohibited on unknown (0x%x) ro-compat filesystem",
++ (sbp->sb_features_ro_compat &
++ XFS_SB_FEAT_RO_COMPAT_UNKNOWN));
++ return -EINVAL;
++ }
++
+ mp->m_flags &= ~XFS_MOUNT_RDONLY;
+
+ /*
+diff --git a/include/asm-generic/siginfo.h b/include/asm-generic/siginfo.h
+index 3d1a3af5cf59..a2508a8f9a9c 100644
+--- a/include/asm-generic/siginfo.h
++++ b/include/asm-generic/siginfo.h
+@@ -17,21 +17,6 @@
+ struct siginfo;
+ void do_schedule_next_timer(struct siginfo *info);
+
+-#ifndef HAVE_ARCH_COPY_SIGINFO
+-
+-#include <linux/string.h>
+-
+-static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
+-{
+- if (from->si_code < 0)
+- memcpy(to, from, sizeof(*to));
+- else
+- /* _sigchld is currently the largest know union member */
+- memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld));
+-}
+-
+-#endif
+-
+ extern int copy_siginfo_to_user(struct siginfo __user *to, const struct siginfo *from);
+
+ #endif
+diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
+index c3a9c8fc60fa..5e13b987d9e2 100644
+--- a/include/linux/can/dev.h
++++ b/include/linux/can/dev.h
+@@ -39,8 +39,11 @@ struct can_priv {
+ struct can_clock clock;
+
+ enum can_state state;
+- u32 ctrlmode;
+- u32 ctrlmode_supported;
++
++ /* CAN controller features - see include/uapi/linux/can/netlink.h */
++ u32 ctrlmode; /* current options setting */
++ u32 ctrlmode_supported; /* options that can be modified by netlink */
++ u32 ctrlmode_static; /* static enabled options for driver/hardware */
+
+ int restart_ms;
+ struct timer_list restart_timer;
+@@ -107,6 +110,21 @@ static inline bool can_is_canfd_skb(const struct sk_buff *skb)
+ return skb->len == CANFD_MTU;
+ }
+
++/* helper to define static CAN controller features at device creation time */
++static inline void can_set_static_ctrlmode(struct net_device *dev,
++ u32 static_mode)
++{
++ struct can_priv *priv = netdev_priv(dev);
++
++ /* alloc_candev() succeeded => netdev_priv() is valid at this point */
++ priv->ctrlmode = static_mode;
++ priv->ctrlmode_static = static_mode;
++
++ /* override MTU which was set by default in can_setup()? */
++ if (static_mode & CAN_CTRLMODE_FD)
++ dev->mtu = CANFD_MTU;
++}
++
+ /* get data length from can_dlc with sanitized can_dlc */
+ u8 can_dlc2len(u8 can_dlc);
+
+diff --git a/include/linux/signal.h b/include/linux/signal.h
+index ab1e0392b5ac..883ceb1439fa 100644
+--- a/include/linux/signal.h
++++ b/include/linux/signal.h
+@@ -28,6 +28,21 @@ struct sigpending {
+ sigset_t signal;
+ };
+
++#ifndef HAVE_ARCH_COPY_SIGINFO
++
++#include <linux/string.h>
++
++static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
++{
++ if (from->si_code < 0)
++ memcpy(to, from, sizeof(*to));
++ else
++ /* _sigchld is currently the largest know union member */
++ memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld));
++}
++
++#endif
++
+ /*
+ * Define some primitives to manipulate sigset_t.
+ */
+diff --git a/include/linux/tty.h b/include/linux/tty.h
+index 5e704e26f9a2..52baf4089bd2 100644
+--- a/include/linux/tty.h
++++ b/include/linux/tty.h
+@@ -339,7 +339,6 @@ struct tty_file_private {
+ #define TTY_EXCLUSIVE 3 /* Exclusive open mode */
+ #define TTY_DEBUG 4 /* Debugging */
+ #define TTY_DO_WRITE_WAKEUP 5 /* Call write_wakeup after queuing new */
+-#define TTY_OTHER_DONE 6 /* Closed pty has completed input processing */
+ #define TTY_LDISC_OPEN 11 /* Line discipline is open */
+ #define TTY_PTY_LOCK 16 /* pty private */
+ #define TTY_NO_WRITE_SPLIT 17 /* Preserve write boundaries to driver */
+@@ -467,6 +466,7 @@ extern void tty_buffer_free_all(struct tty_port *port);
+ extern void tty_buffer_flush(struct tty_struct *tty, struct tty_ldisc *ld);
+ extern void tty_buffer_init(struct tty_port *port);
+ extern void tty_buffer_set_lock_subclass(struct tty_port *port);
++extern void tty_buffer_flush_work(struct tty_port *port);
+ extern speed_t tty_termios_baud_rate(struct ktermios *termios);
+ extern speed_t tty_termios_input_baud_rate(struct ktermios *termios);
+ extern void tty_termios_encode_baud_rate(struct ktermios *termios,
+diff --git a/include/linux/usb.h b/include/linux/usb.h
+index 447fe29b55b4..cb793594aa1e 100644
+--- a/include/linux/usb.h
++++ b/include/linux/usb.h
+@@ -367,14 +367,13 @@ struct usb_bus {
+
+ int devnum_next; /* Next open device number in
+ * round-robin allocation */
++ struct mutex devnum_next_mutex; /* devnum_next mutex */
+
+ struct usb_devmap devmap; /* device address allocation map */
+ struct usb_device *root_hub; /* Root hub */
+ struct usb_bus *hs_companion; /* Companion EHCI bus, if any */
+ struct list_head bus_list; /* list of busses */
+
+- struct mutex usb_address0_mutex; /* unaddressed device mutex */
+-
+ int bandwidth_allocated; /* on this bus: how much of the time
+ * reserved for periodic (intr/iso)
+ * requests is used, on average?
+@@ -1060,7 +1059,7 @@ struct usbdrv_wrap {
+ * for interfaces bound to this driver.
+ * @soft_unbind: if set to 1, the USB core will not kill URBs and disable
+ * endpoints before calling the driver's disconnect method.
+- * @disable_hub_initiated_lpm: if set to 0, the USB core will not allow hubs
++ * @disable_hub_initiated_lpm: if set to 1, the USB core will not allow hubs
+ * to initiate lower power link state transitions when an idle timeout
+ * occurs. Device-initiated USB 3.0 link PM will still be allowed.
+ *
+diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
+index 68b1e836dff1..c00c7393ce8c 100644
+--- a/include/linux/usb/hcd.h
++++ b/include/linux/usb/hcd.h
+@@ -169,6 +169,7 @@ struct usb_hcd {
+ * bandwidth_mutex should be dropped after a successful control message
+ * to the device, or resetting the bandwidth after a failed attempt.
+ */
++ struct mutex *address0_mutex;
+ struct mutex *bandwidth_mutex;
+ struct usb_hcd *shared_hcd;
+ struct usb_hcd *primary_hcd;
+diff --git a/kernel/exit.c b/kernel/exit.c
+index 22fcc05dec40..819f51ec4f55 100644
+--- a/kernel/exit.c
++++ b/kernel/exit.c
+@@ -914,17 +914,28 @@ static int eligible_pid(struct wait_opts *wo, struct task_struct *p)
+ task_pid_type(p, wo->wo_type) == wo->wo_pid;
+ }
+
+-static int eligible_child(struct wait_opts *wo, struct task_struct *p)
++static int
++eligible_child(struct wait_opts *wo, bool ptrace, struct task_struct *p)
+ {
+ if (!eligible_pid(wo, p))
+ return 0;
+- /* Wait for all children (clone and not) if __WALL is set;
+- * otherwise, wait for clone children *only* if __WCLONE is
+- * set; otherwise, wait for non-clone children *only*. (Note:
+- * A "clone" child here is one that reports to its parent
+- * using a signal other than SIGCHLD.) */
+- if (((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE))
+- && !(wo->wo_flags & __WALL))
++
++ /*
++ * Wait for all children (clone and not) if __WALL is set or
++ * if it is traced by us.
++ */
++ if (ptrace || (wo->wo_flags & __WALL))
++ return 1;
++
++ /*
++ * Otherwise, wait for clone children *only* if __WCLONE is set;
++ * otherwise, wait for non-clone children *only*.
++ *
++ * Note: a "clone" child here is one that reports to its parent
++ * using a signal other than SIGCHLD, or a non-leader thread which
++ * we can only see if it is traced by us.
++ */
++ if ((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE))
+ return 0;
+
+ return 1;
+@@ -1297,7 +1308,7 @@ static int wait_consider_task(struct wait_opts *wo, int ptrace,
+ if (unlikely(exit_state == EXIT_DEAD))
+ return 0;
+
+- ret = eligible_child(wo, p);
++ ret = eligible_child(wo, ptrace, p);
+ if (!ret)
+ return ret;
+
+diff --git a/kernel/sched/proc.c b/kernel/sched/proc.c
+index 8ecd552fe4f2..09dfe51f89b5 100644
+--- a/kernel/sched/proc.c
++++ b/kernel/sched/proc.c
+@@ -97,10 +97,13 @@ long calc_load_fold_active(struct rq *this_rq)
+ static unsigned long
+ calc_load(unsigned long load, unsigned long exp, unsigned long active)
+ {
+- load *= exp;
+- load += active * (FIXED_1 - exp);
+- load += 1UL << (FSHIFT - 1);
+- return load >> FSHIFT;
++ unsigned long newload;
++
++ newload = load * exp + active * (FIXED_1 - exp);
++ if (active >= load)
++ newload += FIXED_1-1;
++
++ return newload / FIXED_1;
+ }
+
+ #ifdef CONFIG_NO_HZ_COMMON
+diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
+index 0315d43176d8..fb147c7811d2 100644
+--- a/kernel/trace/ring_buffer.c
++++ b/kernel/trace/ring_buffer.c
+@@ -461,7 +461,8 @@ struct ring_buffer_per_cpu {
+ raw_spinlock_t reader_lock; /* serialize readers */
+ arch_spinlock_t lock;
+ struct lock_class_key lock_key;
+- unsigned int nr_pages;
++ unsigned long nr_pages;
++ unsigned int current_context;
+ struct list_head *pages;
+ struct buffer_page *head_page; /* read from head */
+ struct buffer_page *tail_page; /* write to tail */
+@@ -481,7 +482,7 @@ struct ring_buffer_per_cpu {
+ u64 write_stamp;
+ u64 read_stamp;
+ /* ring buffer pages to update, > 0 to add, < 0 to remove */
+- int nr_pages_to_update;
++ long nr_pages_to_update;
+ struct list_head new_pages; /* new pages to add */
+ struct work_struct update_pages_work;
+ struct completion update_done;
+@@ -1160,10 +1161,10 @@ static int rb_check_pages(struct ring_buffer_per_cpu *cpu_buffer)
+ return 0;
+ }
+
+-static int __rb_allocate_pages(int nr_pages, struct list_head *pages, int cpu)
++static int __rb_allocate_pages(long nr_pages, struct list_head *pages, int cpu)
+ {
+- int i;
+ struct buffer_page *bpage, *tmp;
++ long i;
+
+ for (i = 0; i < nr_pages; i++) {
+ struct page *page;
+@@ -1200,7 +1201,7 @@ free_pages:
+ }
+
+ static int rb_allocate_pages(struct ring_buffer_per_cpu *cpu_buffer,
+- unsigned nr_pages)
++ unsigned long nr_pages)
+ {
+ LIST_HEAD(pages);
+
+@@ -1225,7 +1226,7 @@ static int rb_allocate_pages(struct ring_buffer_per_cpu *cpu_buffer,
+ }
+
+ static struct ring_buffer_per_cpu *
+-rb_allocate_cpu_buffer(struct ring_buffer *buffer, int nr_pages, int cpu)
++rb_allocate_cpu_buffer(struct ring_buffer *buffer, long nr_pages, int cpu)
+ {
+ struct ring_buffer_per_cpu *cpu_buffer;
+ struct buffer_page *bpage;
+@@ -1325,8 +1326,9 @@ struct ring_buffer *__ring_buffer_alloc(unsigned long size, unsigned flags,
+ struct lock_class_key *key)
+ {
+ struct ring_buffer *buffer;
++ long nr_pages;
+ int bsize;
+- int cpu, nr_pages;
++ int cpu;
+
+ /* keep it in its own cache line */
+ buffer = kzalloc(ALIGN(sizeof(*buffer), cache_line_size()),
+@@ -1452,12 +1454,12 @@ static inline unsigned long rb_page_write(struct buffer_page *bpage)
+ }
+
+ static int
+-rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned int nr_pages)
++rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned long nr_pages)
+ {
+ struct list_head *tail_page, *to_remove, *next_page;
+ struct buffer_page *to_remove_page, *tmp_iter_page;
+ struct buffer_page *last_page, *first_page;
+- unsigned int nr_removed;
++ unsigned long nr_removed;
+ unsigned long head_bit;
+ int page_entries;
+
+@@ -1674,7 +1676,7 @@ int ring_buffer_resize(struct ring_buffer *buffer, unsigned long size,
+ int cpu_id)
+ {
+ struct ring_buffer_per_cpu *cpu_buffer;
+- unsigned nr_pages;
++ unsigned long nr_pages;
+ int cpu, err = 0;
+
+ /*
+@@ -1688,14 +1690,13 @@ int ring_buffer_resize(struct ring_buffer *buffer, unsigned long size,
+ !cpumask_test_cpu(cpu_id, buffer->cpumask))
+ return size;
+
+- size = DIV_ROUND_UP(size, BUF_PAGE_SIZE);
+- size *= BUF_PAGE_SIZE;
++ nr_pages = DIV_ROUND_UP(size, BUF_PAGE_SIZE);
+
+ /* we need a minimum of two pages */
+- if (size < BUF_PAGE_SIZE * 2)
+- size = BUF_PAGE_SIZE * 2;
++ if (nr_pages < 2)
++ nr_pages = 2;
+
+- nr_pages = DIV_ROUND_UP(size, BUF_PAGE_SIZE);
++ size = nr_pages * BUF_PAGE_SIZE;
+
+ /*
+ * Don't succeed if resizing is disabled, as a reader might be
+@@ -2675,11 +2676,11 @@ rb_reserve_next_event(struct ring_buffer *buffer,
+ * just so happens that it is the same bit corresponding to
+ * the current context.
+ */
+-static DEFINE_PER_CPU(unsigned int, current_context);
+
+-static __always_inline int trace_recursive_lock(void)
++static __always_inline int
++trace_recursive_lock(struct ring_buffer_per_cpu *cpu_buffer)
+ {
+- unsigned int val = __this_cpu_read(current_context);
++ unsigned int val = cpu_buffer->current_context;
+ int bit;
+
+ if (in_interrupt()) {
+@@ -2696,20 +2697,21 @@ static __always_inline int trace_recursive_lock(void)
+ return 1;
+
+ val |= (1 << bit);
+- __this_cpu_write(current_context, val);
++ cpu_buffer->current_context = val;
+
+ return 0;
+ }
+
+-static __always_inline void trace_recursive_unlock(void)
++static __always_inline void
++trace_recursive_unlock(struct ring_buffer_per_cpu *cpu_buffer)
+ {
+- __this_cpu_and(current_context, __this_cpu_read(current_context) - 1);
++ cpu_buffer->current_context &= cpu_buffer->current_context - 1;
+ }
+
+ #else
+
+-#define trace_recursive_lock() (0)
+-#define trace_recursive_unlock() do { } while (0)
++#define trace_recursive_lock(cpu_buffer) (0)
++#define trace_recursive_unlock(cpu_buffer) do { } while (0)
+
+ #endif
+
+@@ -2741,35 +2743,34 @@ ring_buffer_lock_reserve(struct ring_buffer *buffer, unsigned long length)
+ /* If we are tracing schedule, we don't want to recurse */
+ preempt_disable_notrace();
+
+- if (atomic_read(&buffer->record_disabled))
+- goto out_nocheck;
+-
+- if (trace_recursive_lock())
+- goto out_nocheck;
++ if (unlikely(atomic_read(&buffer->record_disabled)))
++ goto out;
+
+ cpu = raw_smp_processor_id();
+
+- if (!cpumask_test_cpu(cpu, buffer->cpumask))
++ if (unlikely(!cpumask_test_cpu(cpu, buffer->cpumask)))
+ goto out;
+
+ cpu_buffer = buffer->buffers[cpu];
+
+- if (atomic_read(&cpu_buffer->record_disabled))
++ if (unlikely(atomic_read(&cpu_buffer->record_disabled)))
+ goto out;
+
+- if (length > BUF_MAX_DATA_SIZE)
++ if (unlikely(length > BUF_MAX_DATA_SIZE))
++ goto out;
++
++ if (unlikely(trace_recursive_lock(cpu_buffer)))
+ goto out;
+
+ event = rb_reserve_next_event(buffer, cpu_buffer, length);
+ if (!event)
+- goto out;
++ goto out_unlock;
+
+ return event;
+
++ out_unlock:
++ trace_recursive_unlock(cpu_buffer);
+ out:
+- trace_recursive_unlock();
+-
+- out_nocheck:
+ preempt_enable_notrace();
+ return NULL;
+ }
+@@ -2859,7 +2860,7 @@ int ring_buffer_unlock_commit(struct ring_buffer *buffer,
+
+ rb_wakeups(buffer, cpu_buffer);
+
+- trace_recursive_unlock();
++ trace_recursive_unlock(cpu_buffer);
+
+ preempt_enable_notrace();
+
+@@ -2970,7 +2971,7 @@ void ring_buffer_discard_commit(struct ring_buffer *buffer,
+ out:
+ rb_end_commit(cpu_buffer);
+
+- trace_recursive_unlock();
++ trace_recursive_unlock(cpu_buffer);
+
+ preempt_enable_notrace();
+
+@@ -4647,8 +4648,9 @@ static int rb_cpu_notify(struct notifier_block *self,
+ struct ring_buffer *buffer =
+ container_of(self, struct ring_buffer, cpu_notify);
+ long cpu = (long)hcpu;
+- int cpu_i, nr_pages_same;
+- unsigned int nr_pages;
++ long nr_pages_same;
++ int cpu_i;
++ unsigned long nr_pages;
+
+ switch (action) {
+ case CPU_UP_PREPARE:
+diff --git a/lib/dma-debug.c b/lib/dma-debug.c
+index 517a568f038d..a30bd1018f7e 100644
+--- a/lib/dma-debug.c
++++ b/lib/dma-debug.c
+@@ -657,9 +657,9 @@ static struct dma_debug_entry *dma_entry_alloc(void)
+ spin_lock_irqsave(&free_entries_lock, flags);
+
+ if (list_empty(&free_entries)) {
+- pr_err("DMA-API: debugging out of memory - disabling\n");
+ global_disable = true;
+ spin_unlock_irqrestore(&free_entries_lock, flags);
++ pr_err("DMA-API: debugging out of memory - disabling\n");
+ return NULL;
+ }
+
+diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
+index 1095be9c80ab..4605dc73def6 100644
+--- a/net/sunrpc/auth_gss/svcauth_gss.c
++++ b/net/sunrpc/auth_gss/svcauth_gss.c
+@@ -857,8 +857,8 @@ unwrap_integ_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct g
+ goto out;
+ if (svc_getnl(&buf->head[0]) != seq)
+ goto out;
+- /* trim off the mic at the end before returning */
+- xdr_buf_trim(buf, mic.len + 4);
++ /* trim off the mic and padding at the end before returning */
++ xdr_buf_trim(buf, round_up_to_quad(mic.len) + 4);
+ stat = 0;
+ out:
+ kfree(mic.data);
+diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
+index f734033af219..5c17a5c1f306 100644
+--- a/scripts/Makefile.extrawarn
++++ b/scripts/Makefile.extrawarn
+@@ -24,6 +24,7 @@ warning-1 += $(call cc-option, -Wmissing-prototypes)
+ warning-1 += -Wold-style-definition
+ warning-1 += $(call cc-option, -Wmissing-include-dirs)
+ warning-1 += $(call cc-option, -Wunused-but-set-variable)
++warning-1 += $(call cc-option, -Wunused-const-variable)
+ warning-1 += $(call cc-disable-warning, missing-field-initializers)
+
+ warning-2 := -Waggregate-return
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 29595e0c3fb4..bee74795c9b9 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4630,6 +4630,7 @@ enum {
+ ALC288_FIXUP_DISABLE_AAMIX,
+ ALC292_FIXUP_DELL_E7X,
+ ALC292_FIXUP_DISABLE_AAMIX,
++ ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK,
+ ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC275_FIXUP_DELL_XPS,
+ ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE,
+@@ -5201,6 +5202,12 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC269_FIXUP_DELL2_MIC_NO_PRESENCE
+ },
++ [ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_disable_aamix,
++ .chained = true,
++ .chain_id = ALC293_FIXUP_DELL1_MIC_NO_PRESENCE
++ },
+ [ALC292_FIXUP_DELL_E7X] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_dell_xps13,
+@@ -5323,13 +5330,14 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x06c7, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+- SND_PCI_QUIRK(0x1028, 0x06db, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+- SND_PCI_QUIRK(0x1028, 0x06dd, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+- SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+- SND_PCI_QUIRK(0x1028, 0x06df, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+- SND_PCI_QUIRK(0x1028, 0x06e0, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+- SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
++ SND_PCI_QUIRK(0x1028, 0x06db, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK),
++ SND_PCI_QUIRK(0x1028, 0x06dd, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK),
++ SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK),
++ SND_PCI_QUIRK(0x1028, 0x06df, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK),
++ SND_PCI_QUIRK(0x1028, 0x06e0, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK),
++ SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13 9350", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE),
++ SND_PCI_QUIRK(0x1028, 0x075b, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
+diff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.c
+index 13585e88f597..8e9b76d03f81 100644
+--- a/sound/soc/codecs/ak4642.c
++++ b/sound/soc/codecs/ak4642.c
+@@ -64,12 +64,15 @@
+ #define FIL1_0 0x1c
+ #define FIL1_1 0x1d
+ #define FIL1_2 0x1e
+-#define FIL1_3 0x1f
++#define FIL1_3 0x1f /* The maximum valid register for ak4642 */
+ #define PW_MGMT4 0x20
+ #define MD_CTL5 0x21
+ #define LO_MS 0x22
+ #define HP_MS 0x23
+-#define SPK_MS 0x24
++#define SPK_MS 0x24 /* The maximum valid register for ak4643 */
++#define EQ_FBEQAB 0x25
++#define EQ_FBEQCD 0x26
++#define EQ_FBEQE 0x27 /* The maximum valid register for ak4648 */
+
+ /* PW_MGMT1*/
+ #define PMVCM (1 << 6) /* VCOM Power Management */
+@@ -241,7 +244,7 @@ static const struct snd_soc_dapm_route ak4642_intercon[] = {
+ /*
+ * ak4642 register cache
+ */
+-static const struct reg_default ak4642_reg[] = {
++static const struct reg_default ak4643_reg[] = {
+ { 0, 0x00 }, { 1, 0x00 }, { 2, 0x01 }, { 3, 0x00 },
+ { 4, 0x02 }, { 5, 0x00 }, { 6, 0x00 }, { 7, 0x00 },
+ { 8, 0xe1 }, { 9, 0xe1 }, { 10, 0x18 }, { 11, 0x00 },
+@@ -254,6 +257,14 @@ static const struct reg_default ak4642_reg[] = {
+ { 36, 0x00 },
+ };
+
++/* The default settings for 0x0 ~ 0x1f registers are the same for ak4642
++ and ak4643. So we reuse the ak4643 reg_default for ak4642.
++ The valid registers for ak4642 are 0x0 ~ 0x1f which is a subset of ak4643,
++ so define NUM_AK4642_REG_DEFAULTS for ak4642.
++*/
++#define ak4642_reg ak4643_reg
++#define NUM_AK4642_REG_DEFAULTS (FIL1_3 + 1)
++
+ static const struct reg_default ak4648_reg[] = {
+ { 0, 0x00 }, { 1, 0x00 }, { 2, 0x01 }, { 3, 0x00 },
+ { 4, 0x02 }, { 5, 0x00 }, { 6, 0x00 }, { 7, 0x00 },
+@@ -536,17 +547,28 @@ static struct snd_soc_codec_driver soc_codec_dev_ak4642 = {
+ static const struct regmap_config ak4642_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+- .max_register = ARRAY_SIZE(ak4642_reg) + 1,
++ .max_register = FIL1_3,
+ .reg_defaults = ak4642_reg,
+- .num_reg_defaults = ARRAY_SIZE(ak4642_reg),
++ .num_reg_defaults = NUM_AK4642_REG_DEFAULTS,
++ .cache_type = REGCACHE_RBTREE,
++};
++
++static const struct regmap_config ak4643_regmap = {
++ .reg_bits = 8,
++ .val_bits = 8,
++ .max_register = SPK_MS,
++ .reg_defaults = ak4643_reg,
++ .num_reg_defaults = ARRAY_SIZE(ak4643_reg),
++ .cache_type = REGCACHE_RBTREE,
+ };
+
+ static const struct regmap_config ak4648_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+- .max_register = ARRAY_SIZE(ak4648_reg) + 1,
++ .max_register = EQ_FBEQE,
+ .reg_defaults = ak4648_reg,
+ .num_reg_defaults = ARRAY_SIZE(ak4648_reg),
++ .cache_type = REGCACHE_RBTREE,
+ };
+
+ static const struct ak4642_drvdata ak4642_drvdata = {
+@@ -554,7 +576,7 @@ static const struct ak4642_drvdata ak4642_drvdata = {
+ };
+
+ static const struct ak4642_drvdata ak4643_drvdata = {
+- .regmap_config = &ak4642_regmap,
++ .regmap_config = &ak4643_regmap,
+ };
+
+ static const struct ak4642_drvdata ak4648_drvdata = {
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-05-24 12:39 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-05-24 12:39 UTC (permalink / raw
To: gentoo-commits
commit: 52f7ac601320fc8777c2da9f66f3485952b0d0f1
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue May 24 12:38:50 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue May 24 12:38:50 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=52f7ac60
Linux patch 4.1.25
0000_README | 4 +
1024_linux-4.1.25.patch | 5192 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 5196 insertions(+)
diff --git a/0000_README b/0000_README
index 6700cd7..fcfa288 100644
--- a/0000_README
+++ b/0000_README
@@ -139,6 +139,10 @@ Patch: 1023_linux-4.1.24.patch
From: http://www.kernel.org
Desc: Linux 4.1.24
+Patch: 1024_linux-4.1.25.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.25
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1024_linux-4.1.25.patch b/1024_linux-4.1.25.patch
new file mode 100644
index 0000000..0be2af8
--- /dev/null
+++ b/1024_linux-4.1.25.patch
@@ -0,0 +1,5192 @@
+diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
+index c2340eeeb97f..c000832a7fb9 100644
+--- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
++++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
+@@ -30,6 +30,10 @@ Optional properties:
+ - target-supply : regulator for SATA target power
+ - phys : reference to the SATA PHY node
+ - phy-names : must be "sata-phy"
++- ports-implemented : Mask that indicates which ports that the HBA supports
++ are available for software to use. Useful if PORTS_IMPL
++ is not programmed by the BIOS, which is true with
++ some embedded SOC's.
+
+ Required properties when using sub-nodes:
+ - #address-cells : number of cells to encode an address
+diff --git a/MAINTAINERS b/MAINTAINERS
+index 0b51c8a3c627..a1d127a83a48 100644
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3772,8 +3772,8 @@ F: Documentation/efi-stub.txt
+ F: arch/ia64/kernel/efi.c
+ F: arch/x86/boot/compressed/eboot.[ch]
+ F: arch/x86/include/asm/efi.h
+-F: arch/x86/platform/efi/*
+-F: drivers/firmware/efi/*
++F: arch/x86/platform/efi/
++F: drivers/firmware/efi/
+ F: include/linux/efi*.h
+
+ EFI VARIABLE FILESYSTEM
+diff --git a/Makefile b/Makefile
+index df1d8b1448ae..c2f929d78726 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 24
++SUBLEVEL = 25
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S
+index 5bb016427107..e01316bbef61 100644
+--- a/arch/arm/mach-socfpga/headsmp.S
++++ b/arch/arm/mach-socfpga/headsmp.S
+@@ -12,6 +12,7 @@
+ #include <asm/memory.h>
+
+ .arch armv7-a
++ .arm
+
+ ENTRY(secondary_trampoline)
+ /* CPU1 will always fetch from 0x0 when it is brought out of reset.
+diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
+index 02cf40c96fe3..099c23616901 100644
+--- a/arch/parisc/kernel/syscall.S
++++ b/arch/parisc/kernel/syscall.S
+@@ -342,7 +342,7 @@ tracesys_next:
+ stw %r21, -56(%r30) /* 6th argument */
+ #endif
+
+- comiclr,>>= __NR_Linux_syscalls, %r20, %r0
++ comiclr,>> __NR_Linux_syscalls, %r20, %r0
+ b,n .Ltracesys_nosys
+
+ LDREGX %r20(%r19), %r19
+diff --git a/arch/powerpc/include/asm/word-at-a-time.h b/arch/powerpc/include/asm/word-at-a-time.h
+index 5b3a903adae6..7043539e0248 100644
+--- a/arch/powerpc/include/asm/word-at-a-time.h
++++ b/arch/powerpc/include/asm/word-at-a-time.h
+@@ -77,7 +77,7 @@ static inline unsigned long create_zero_mask(unsigned long bits)
+ "andc %1,%1,%2\n\t"
+ "popcntd %0,%1"
+ : "=r" (leading_zero_bits), "=&r" (trailing_zero_bit_mask)
+- : "r" (bits));
++ : "b" (bits));
+
+ return leading_zero_bits;
+ }
+diff --git a/arch/x86/kernel/sysfb_efi.c b/arch/x86/kernel/sysfb_efi.c
+index b285d4e8c68e..5da924bbf0a0 100644
+--- a/arch/x86/kernel/sysfb_efi.c
++++ b/arch/x86/kernel/sysfb_efi.c
+@@ -106,14 +106,24 @@ static int __init efifb_set_system(const struct dmi_system_id *id)
+ continue;
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+ resource_size_t start, end;
++ unsigned long flags;
++
++ flags = pci_resource_flags(dev, i);
++ if (!(flags & IORESOURCE_MEM))
++ continue;
++
++ if (flags & IORESOURCE_UNSET)
++ continue;
++
++ if (pci_resource_len(dev, i) == 0)
++ continue;
+
+ start = pci_resource_start(dev, i);
+- if (start == 0)
+- break;
+ end = pci_resource_end(dev, i);
+ if (screen_info.lfb_base >= start &&
+ screen_info.lfb_base < end) {
+ found_bar = 1;
++ break;
+ }
+ }
+ }
+diff --git a/arch/x86/kernel/tsc_msr.c b/arch/x86/kernel/tsc_msr.c
+index 92ae6acac8a7..6aa0f4d9eea6 100644
+--- a/arch/x86/kernel/tsc_msr.c
++++ b/arch/x86/kernel/tsc_msr.c
+@@ -92,7 +92,7 @@ unsigned long try_msr_calibrate_tsc(void)
+
+ if (freq_desc_tables[cpu_index].msr_plat) {
+ rdmsr(MSR_PLATFORM_INFO, lo, hi);
+- ratio = (lo >> 8) & 0x1f;
++ ratio = (lo >> 8) & 0xff;
+ } else {
+ rdmsr(MSR_IA32_PERF_STATUS, lo, hi);
+ ratio = (hi >> 8) & 0x1f;
+diff --git a/crypto/ahash.c b/crypto/ahash.c
+index d19b52324cf5..dac1c24e9c3e 100644
+--- a/crypto/ahash.c
++++ b/crypto/ahash.c
+@@ -69,8 +69,9 @@ static int hash_walk_new_entry(struct crypto_hash_walk *walk)
+ struct scatterlist *sg;
+
+ sg = walk->sg;
+- walk->pg = sg_page(sg);
+ walk->offset = sg->offset;
++ walk->pg = sg_page(walk->sg) + (walk->offset >> PAGE_SHIFT);
++ walk->offset = offset_in_page(walk->offset);
+ walk->entrylen = sg->length;
+
+ if (walk->entrylen > walk->total)
+diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
+index d72565a3c646..adff30d5ba33 100644
+--- a/drivers/acpi/acpica/dsmethod.c
++++ b/drivers/acpi/acpica/dsmethod.c
+@@ -412,6 +412,9 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
+ obj_desc->method.mutex->mutex.
+ original_sync_level =
+ obj_desc->method.mutex->mutex.sync_level;
++
++ obj_desc->method.mutex->mutex.thread_id =
++ acpi_os_get_thread_id();
+ }
+ }
+
+diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
+index 78d6ae0b90c4..706af86bde6b 100644
+--- a/drivers/ata/ahci_platform.c
++++ b/drivers/ata/ahci_platform.c
+@@ -49,6 +49,9 @@ static int ahci_probe(struct platform_device *pdev)
+ if (rc)
+ return rc;
+
++ of_property_read_u32(dev->of_node,
++ "ports-implemented", &hpriv->force_port_map);
++
+ if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
+ hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
+
+diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
+index 49840264dd57..de56b91238c9 100644
+--- a/drivers/ata/libahci.c
++++ b/drivers/ata/libahci.c
+@@ -467,6 +467,7 @@ void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv)
+ dev_info(dev, "forcing port_map 0x%x -> 0x%x\n",
+ port_map, hpriv->force_port_map);
+ port_map = hpriv->force_port_map;
++ hpriv->saved_port_map = port_map;
+ }
+
+ if (hpriv->mask_port_map) {
+diff --git a/drivers/base/regmap/regmap-spmi.c b/drivers/base/regmap/regmap-spmi.c
+index d7026dc33388..b394aaef3867 100644
+--- a/drivers/base/regmap/regmap-spmi.c
++++ b/drivers/base/regmap/regmap-spmi.c
+@@ -153,7 +153,7 @@ static int regmap_spmi_ext_read(void *context,
+ while (val_size) {
+ len = min_t(size_t, val_size, 8);
+
+- err = spmi_ext_register_readl(context, addr, val, val_size);
++ err = spmi_ext_register_readl(context, addr, val, len);
+ if (err)
+ goto err_out;
+
+diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c
+index 545069d5fdfb..e342565e8715 100644
+--- a/drivers/cpuidle/cpuidle-arm.c
++++ b/drivers/cpuidle/cpuidle-arm.c
+@@ -50,7 +50,7 @@ static int arm_enter_idle_state(struct cpuidle_device *dev,
+ * call the CPU ops suspend protocol with idle index as a
+ * parameter.
+ */
+- arm_cpuidle_suspend(idx);
++ ret = arm_cpuidle_suspend(idx);
+
+ cpu_pm_exit();
+ }
+diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
+index 01087a38da22..792bdae2b91d 100644
+--- a/drivers/edac/i7core_edac.c
++++ b/drivers/edac/i7core_edac.c
+@@ -1866,7 +1866,7 @@ static int i7core_mce_check_error(struct notifier_block *nb, unsigned long val,
+
+ i7_dev = get_i7core_dev(mce->socketid);
+ if (!i7_dev)
+- return NOTIFY_BAD;
++ return NOTIFY_DONE;
+
+ mci = i7_dev->mci;
+ pvt = mci->pvt_info;
+diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
+index 5d87111fdc87..a7e7be0a8ae8 100644
+--- a/drivers/edac/sb_edac.c
++++ b/drivers/edac/sb_edac.c
+@@ -2175,7 +2175,7 @@ static int sbridge_mce_check_error(struct notifier_block *nb, unsigned long val,
+
+ mci = get_mci_for_node_id(mce->socketid);
+ if (!mci)
+- return NOTIFY_BAD;
++ return NOTIFY_DONE;
+ pvt = mci->pvt_info;
+
+ /*
+diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
+index 7f2ea21c730d..6f182fd91a6d 100644
+--- a/drivers/firmware/efi/vars.c
++++ b/drivers/firmware/efi/vars.c
+@@ -202,29 +202,44 @@ static const struct variable_validate variable_validate[] = {
+ { NULL_GUID, "", NULL },
+ };
+
++/*
++ * Check if @var_name matches the pattern given in @match_name.
++ *
++ * @var_name: an array of @len non-NUL characters.
++ * @match_name: a NUL-terminated pattern string, optionally ending in "*". A
++ * final "*" character matches any trailing characters @var_name,
++ * including the case when there are none left in @var_name.
++ * @match: on output, the number of non-wildcard characters in @match_name
++ * that @var_name matches, regardless of the return value.
++ * @return: whether @var_name fully matches @match_name.
++ */
+ static bool
+ variable_matches(const char *var_name, size_t len, const char *match_name,
+ int *match)
+ {
+ for (*match = 0; ; (*match)++) {
+ char c = match_name[*match];
+- char u = var_name[*match];
+
+- /* Wildcard in the matching name means we've matched */
+- if (c == '*')
++ switch (c) {
++ case '*':
++ /* Wildcard in @match_name means we've matched. */
+ return true;
+
+- /* Case sensitive match */
+- if (!c && *match == len)
+- return true;
++ case '\0':
++ /* @match_name has ended. Has @var_name too? */
++ return (*match == len);
+
+- if (c != u)
++ default:
++ /*
++ * We've reached a non-wildcard char in @match_name.
++ * Continue only if there's an identical character in
++ * @var_name.
++ */
++ if (*match < len && c == var_name[*match])
++ continue;
+ return false;
+-
+- if (!c)
+- return true;
++ }
+ }
+- return true;
+ }
+
+ bool
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 2c04c59022f3..10b8839cbd0c 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -1784,6 +1784,11 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr)
+ req_payload.start_slot = cur_slots;
+ if (mgr->proposed_vcpis[i]) {
+ port = container_of(mgr->proposed_vcpis[i], struct drm_dp_mst_port, vcpi);
++ port = drm_dp_get_validated_port_ref(mgr, port);
++ if (!port) {
++ mutex_unlock(&mgr->payload_lock);
++ return -EINVAL;
++ }
+ req_payload.num_slots = mgr->proposed_vcpis[i]->num_slots;
+ } else {
+ port = NULL;
+@@ -1809,6 +1814,9 @@ int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr)
+ mgr->payloads[i].payload_state = req_payload.payload_state;
+ }
+ cur_slots += req_payload.num_slots;
++
++ if (port)
++ drm_dp_put_port(port);
+ }
+
+ for (i = 0; i < mgr->max_payloads; i++) {
+@@ -2114,6 +2122,8 @@ int drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr)
+
+ if (mgr->mst_primary) {
+ int sret;
++ u8 guid[16];
++
+ sret = drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, mgr->dpcd, DP_RECEIVER_CAP_SIZE);
+ if (sret != DP_RECEIVER_CAP_SIZE) {
+ DRM_DEBUG_KMS("dpcd read failed - undocked during suspend?\n");
+@@ -2128,6 +2138,16 @@ int drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr)
+ ret = -1;
+ goto out_unlock;
+ }
++
++ /* Some hubs forget their guids after they resume */
++ sret = drm_dp_dpcd_read(mgr->aux, DP_GUID, guid, 16);
++ if (sret != 16) {
++ DRM_DEBUG_KMS("dpcd read failed - undocked during suspend?\n");
++ ret = -1;
++ goto out_unlock;
++ }
++ drm_dp_check_mstb_guid(mgr->mst_primary, guid);
++
+ ret = 0;
+ } else
+ ret = -1;
+diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
+index a30db4b4050e..d20d818620c6 100644
+--- a/drivers/gpu/drm/i915/i915_reg.h
++++ b/drivers/gpu/drm/i915/i915_reg.h
+@@ -2452,7 +2452,14 @@ enum skl_disp_power_wells {
+ #define GEN6_RP_STATE_LIMITS (MCHBAR_MIRROR_BASE_SNB + 0x5994)
+ #define GEN6_RP_STATE_CAP (MCHBAR_MIRROR_BASE_SNB + 0x5998)
+
+-#define INTERVAL_1_28_US(us) (((us) * 100) >> 7)
++/*
++ * Make these a multiple of magic 25 to avoid SNB (eg. Dell XPS
++ * 8300) freezing up around GPU hangs. Looks as if even
++ * scheduling/timer interrupts start misbehaving if the RPS
++ * EI/thresholds are "bad", leading to a very sluggish or even
++ * frozen machine.
++ */
++#define INTERVAL_1_28_US(us) roundup(((us) * 100) >> 7, 25)
+ #define INTERVAL_1_33_US(us) (((us) * 3) >> 2)
+ #define GT_INTERVAL_FROM_US(dev_priv, us) (IS_GEN9(dev_priv) ? \
+ INTERVAL_1_33_US(us) : \
+diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
+index 515d7123785d..0542c252dde5 100644
+--- a/drivers/gpu/drm/i915/intel_crt.c
++++ b/drivers/gpu/drm/i915/intel_crt.c
+@@ -312,8 +312,14 @@ static bool intel_crt_compute_config(struct intel_encoder *encoder,
+ pipe_config->has_pch_encoder = true;
+
+ /* LPT FDI RX only supports 8bpc. */
+- if (HAS_PCH_LPT(dev))
++ if (HAS_PCH_LPT(dev)) {
++ if (pipe_config->bw_constrained && pipe_config->pipe_bpp < 24) {
++ DRM_DEBUG_KMS("LPT only supports 24bpp\n");
++ return false;
++ }
++
+ pipe_config->pipe_bpp = 24;
++ }
+
+ /* FDI must always be 2.7 GHz */
+ if (HAS_DDI(dev)) {
+diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
+index 3eb0efc2dd0d..4d554ec867be 100644
+--- a/drivers/gpu/drm/i915/intel_ddi.c
++++ b/drivers/gpu/drm/i915/intel_ddi.c
+@@ -2167,12 +2167,6 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
+ intel_ddi_clock_get(encoder, pipe_config);
+ }
+
+-static void intel_ddi_destroy(struct drm_encoder *encoder)
+-{
+- /* HDMI has nothing special to destroy, so we can go with this. */
+- intel_dp_encoder_destroy(encoder);
+-}
+-
+ static bool intel_ddi_compute_config(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config)
+ {
+@@ -2191,7 +2185,8 @@ static bool intel_ddi_compute_config(struct intel_encoder *encoder,
+ }
+
+ static const struct drm_encoder_funcs intel_ddi_funcs = {
+- .destroy = intel_ddi_destroy,
++ .reset = intel_dp_encoder_reset,
++ .destroy = intel_dp_encoder_destroy,
+ };
+
+ static struct intel_connector *
+@@ -2264,6 +2259,7 @@ void intel_ddi_init(struct drm_device *dev, enum port port)
+ intel_encoder->post_disable = intel_ddi_post_disable;
+ intel_encoder->get_hw_state = intel_ddi_get_hw_state;
+ intel_encoder->get_config = intel_ddi_get_config;
++ intel_encoder->suspend = intel_dp_encoder_suspend;
+
+ intel_dig_port->port = port;
+ intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
+diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
+index fb2983f77141..3f8cb8017a71 100644
+--- a/drivers/gpu/drm/i915/intel_dp.c
++++ b/drivers/gpu/drm/i915/intel_dp.c
+@@ -4549,7 +4549,7 @@ void intel_dp_encoder_destroy(struct drm_encoder *encoder)
+ kfree(intel_dig_port);
+ }
+
+-static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder)
++void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder)
+ {
+ struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
+
+@@ -4591,7 +4591,7 @@ static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp)
+ edp_panel_vdd_schedule_off(intel_dp);
+ }
+
+-static void intel_dp_encoder_reset(struct drm_encoder *encoder)
++void intel_dp_encoder_reset(struct drm_encoder *encoder)
+ {
+ struct intel_dp *intel_dp;
+
+diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
+index 68d1f74a7403..34291dce48c4 100644
+--- a/drivers/gpu/drm/i915/intel_drv.h
++++ b/drivers/gpu/drm/i915/intel_drv.h
+@@ -1066,6 +1066,8 @@ void intel_dp_start_link_train(struct intel_dp *intel_dp);
+ void intel_dp_complete_link_train(struct intel_dp *intel_dp);
+ void intel_dp_stop_link_train(struct intel_dp *intel_dp);
+ void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
++void intel_dp_encoder_reset(struct drm_encoder *encoder);
++void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
+ void intel_dp_encoder_destroy(struct drm_encoder *encoder);
+ int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc);
+ bool intel_dp_compute_config(struct intel_encoder *encoder,
+diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
+index 7ac42d063574..c868acb47e03 100644
+--- a/drivers/gpu/drm/radeon/atombios_dp.c
++++ b/drivers/gpu/drm/radeon/atombios_dp.c
+@@ -325,8 +325,8 @@ int radeon_dp_get_dp_link_config(struct drm_connector *connector,
+ }
+ }
+ } else {
+- for (lane_num = 1; lane_num <= max_lane_num; lane_num <<= 1) {
+- for (i = 0; i < ARRAY_SIZE(link_rates) && link_rates[i] <= max_link_rate; i++) {
++ for (i = 0; i < ARRAY_SIZE(link_rates) && link_rates[i] <= max_link_rate; i++) {
++ for (lane_num = 1; lane_num <= max_lane_num; lane_num <<= 1) {
+ max_pix_clock = (lane_num * link_rates[i] * 8) / bpp;
+ if (max_pix_clock >= pix_clock) {
+ *dp_lanes = lane_num;
+diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
+index adf74f4366bb..0b04b9282f56 100644
+--- a/drivers/gpu/drm/radeon/atombios_encoders.c
++++ b/drivers/gpu/drm/radeon/atombios_encoders.c
+@@ -310,6 +310,10 @@ static bool radeon_atom_mode_fixup(struct drm_encoder *encoder,
+ && (mode->crtc_vsync_start < (mode->crtc_vdisplay + 2)))
+ adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + 2;
+
++ /* vertical FP must be at least 1 */
++ if (mode->crtc_vsync_start == mode->crtc_vdisplay)
++ adjusted_mode->crtc_vsync_start++;
++
+ /* get the native mode for scaling */
+ if (radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT)) {
+ radeon_panel_mode_fixup(encoder, adjusted_mode);
+diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
+index feef136cdb55..3bb4fdea8002 100644
+--- a/drivers/gpu/drm/radeon/evergreen.c
++++ b/drivers/gpu/drm/radeon/evergreen.c
+@@ -2560,10 +2560,152 @@ static void evergreen_agp_enable(struct radeon_device *rdev)
+ WREG32(VM_CONTEXT1_CNTL, 0);
+ }
+
++static const unsigned ni_dig_offsets[] =
++{
++ NI_DIG0_REGISTER_OFFSET,
++ NI_DIG1_REGISTER_OFFSET,
++ NI_DIG2_REGISTER_OFFSET,
++ NI_DIG3_REGISTER_OFFSET,
++ NI_DIG4_REGISTER_OFFSET,
++ NI_DIG5_REGISTER_OFFSET
++};
++
++static const unsigned ni_tx_offsets[] =
++{
++ NI_DCIO_UNIPHY0_UNIPHY_TX_CONTROL1,
++ NI_DCIO_UNIPHY1_UNIPHY_TX_CONTROL1,
++ NI_DCIO_UNIPHY2_UNIPHY_TX_CONTROL1,
++ NI_DCIO_UNIPHY3_UNIPHY_TX_CONTROL1,
++ NI_DCIO_UNIPHY4_UNIPHY_TX_CONTROL1,
++ NI_DCIO_UNIPHY5_UNIPHY_TX_CONTROL1
++};
++
++static const unsigned evergreen_dp_offsets[] =
++{
++ EVERGREEN_DP0_REGISTER_OFFSET,
++ EVERGREEN_DP1_REGISTER_OFFSET,
++ EVERGREEN_DP2_REGISTER_OFFSET,
++ EVERGREEN_DP3_REGISTER_OFFSET,
++ EVERGREEN_DP4_REGISTER_OFFSET,
++ EVERGREEN_DP5_REGISTER_OFFSET
++};
++
++
++/*
++ * Assumption is that EVERGREEN_CRTC_MASTER_EN enable for requested crtc
++ * We go from crtc to connector and it is not relible since it
++ * should be an opposite direction .If crtc is enable then
++ * find the dig_fe which selects this crtc and insure that it enable.
++ * if such dig_fe is found then find dig_be which selects found dig_be and
++ * insure that it enable and in DP_SST mode.
++ * if UNIPHY_PLL_CONTROL1.enable then we should disconnect timing
++ * from dp symbols clocks .
++ */
++static bool evergreen_is_dp_sst_stream_enabled(struct radeon_device *rdev,
++ unsigned crtc_id, unsigned *ret_dig_fe)
++{
++ unsigned i;
++ unsigned dig_fe;
++ unsigned dig_be;
++ unsigned dig_en_be;
++ unsigned uniphy_pll;
++ unsigned digs_fe_selected;
++ unsigned dig_be_mode;
++ unsigned dig_fe_mask;
++ bool is_enabled = false;
++ bool found_crtc = false;
++
++ /* loop through all running dig_fe to find selected crtc */
++ for (i = 0; i < ARRAY_SIZE(ni_dig_offsets); i++) {
++ dig_fe = RREG32(NI_DIG_FE_CNTL + ni_dig_offsets[i]);
++ if (dig_fe & NI_DIG_FE_CNTL_SYMCLK_FE_ON &&
++ crtc_id == NI_DIG_FE_CNTL_SOURCE_SELECT(dig_fe)) {
++ /* found running pipe */
++ found_crtc = true;
++ dig_fe_mask = 1 << i;
++ dig_fe = i;
++ break;
++ }
++ }
++
++ if (found_crtc) {
++ /* loop through all running dig_be to find selected dig_fe */
++ for (i = 0; i < ARRAY_SIZE(ni_dig_offsets); i++) {
++ dig_be = RREG32(NI_DIG_BE_CNTL + ni_dig_offsets[i]);
++ /* if dig_fe_selected by dig_be? */
++ digs_fe_selected = NI_DIG_BE_CNTL_FE_SOURCE_SELECT(dig_be);
++ dig_be_mode = NI_DIG_FE_CNTL_MODE(dig_be);
++ if (dig_fe_mask & digs_fe_selected &&
++ /* if dig_be in sst mode? */
++ dig_be_mode == NI_DIG_BE_DPSST) {
++ dig_en_be = RREG32(NI_DIG_BE_EN_CNTL +
++ ni_dig_offsets[i]);
++ uniphy_pll = RREG32(NI_DCIO_UNIPHY0_PLL_CONTROL1 +
++ ni_tx_offsets[i]);
++ /* dig_be enable and tx is running */
++ if (dig_en_be & NI_DIG_BE_EN_CNTL_ENABLE &&
++ dig_en_be & NI_DIG_BE_EN_CNTL_SYMBCLK_ON &&
++ uniphy_pll & NI_DCIO_UNIPHY0_PLL_CONTROL1_ENABLE) {
++ is_enabled = true;
++ *ret_dig_fe = dig_fe;
++ break;
++ }
++ }
++ }
++ }
++
++ return is_enabled;
++}
++
++/*
++ * Blank dig when in dp sst mode
++ * Dig ignores crtc timing
++ */
++static void evergreen_blank_dp_output(struct radeon_device *rdev,
++ unsigned dig_fe)
++{
++ unsigned stream_ctrl;
++ unsigned fifo_ctrl;
++ unsigned counter = 0;
++
++ if (dig_fe >= ARRAY_SIZE(evergreen_dp_offsets)) {
++ DRM_ERROR("invalid dig_fe %d\n", dig_fe);
++ return;
++ }
++
++ stream_ctrl = RREG32(EVERGREEN_DP_VID_STREAM_CNTL +
++ evergreen_dp_offsets[dig_fe]);
++ if (!(stream_ctrl & EVERGREEN_DP_VID_STREAM_CNTL_ENABLE)) {
++ DRM_ERROR("dig %d , should be enable\n", dig_fe);
++ return;
++ }
++
++ stream_ctrl &=~EVERGREEN_DP_VID_STREAM_CNTL_ENABLE;
++ WREG32(EVERGREEN_DP_VID_STREAM_CNTL +
++ evergreen_dp_offsets[dig_fe], stream_ctrl);
++
++ stream_ctrl = RREG32(EVERGREEN_DP_VID_STREAM_CNTL +
++ evergreen_dp_offsets[dig_fe]);
++ while (counter < 32 && stream_ctrl & EVERGREEN_DP_VID_STREAM_STATUS) {
++ msleep(1);
++ counter++;
++ stream_ctrl = RREG32(EVERGREEN_DP_VID_STREAM_CNTL +
++ evergreen_dp_offsets[dig_fe]);
++ }
++ if (counter >= 32 )
++ DRM_ERROR("counter exceeds %d\n", counter);
++
++ fifo_ctrl = RREG32(EVERGREEN_DP_STEER_FIFO + evergreen_dp_offsets[dig_fe]);
++ fifo_ctrl |= EVERGREEN_DP_STEER_FIFO_RESET;
++ WREG32(EVERGREEN_DP_STEER_FIFO + evergreen_dp_offsets[dig_fe], fifo_ctrl);
++
++}
++
+ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *save)
+ {
+ u32 crtc_enabled, tmp, frame_count, blackout;
+ int i, j;
++ unsigned dig_fe;
+
+ if (!ASIC_IS_NODCE(rdev)) {
+ save->vga_render_control = RREG32(VGA_RENDER_CONTROL);
+@@ -2603,7 +2745,17 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav
+ break;
+ udelay(1);
+ }
+-
++ /*we should disable dig if it drives dp sst*/
++ /*but we are in radeon_device_init and the topology is unknown*/
++ /*and it is available after radeon_modeset_init*/
++ /*the following method radeon_atom_encoder_dpms_dig*/
++ /*does the job if we initialize it properly*/
++ /*for now we do it this manually*/
++ /**/
++ if (ASIC_IS_DCE5(rdev) &&
++ evergreen_is_dp_sst_stream_enabled(rdev, i ,&dig_fe))
++ evergreen_blank_dp_output(rdev, dig_fe);
++ /*we could remove 6 lines below*/
+ /* XXX this is a hack to avoid strange behavior with EFI on certain systems */
+ WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 1);
+ tmp = RREG32(EVERGREEN_CRTC_CONTROL + crtc_offsets[i]);
+diff --git a/drivers/gpu/drm/radeon/evergreen_reg.h b/drivers/gpu/drm/radeon/evergreen_reg.h
+index aa939dfed3a3..b436badf9efa 100644
+--- a/drivers/gpu/drm/radeon/evergreen_reg.h
++++ b/drivers/gpu/drm/radeon/evergreen_reg.h
+@@ -250,8 +250,43 @@
+
+ /* HDMI blocks at 0x7030, 0x7c30, 0x10830, 0x11430, 0x12030, 0x12c30 */
+ #define EVERGREEN_HDMI_BASE 0x7030
++/*DIG block*/
++#define NI_DIG0_REGISTER_OFFSET (0x7000 - 0x7000)
++#define NI_DIG1_REGISTER_OFFSET (0x7C00 - 0x7000)
++#define NI_DIG2_REGISTER_OFFSET (0x10800 - 0x7000)
++#define NI_DIG3_REGISTER_OFFSET (0x11400 - 0x7000)
++#define NI_DIG4_REGISTER_OFFSET (0x12000 - 0x7000)
++#define NI_DIG5_REGISTER_OFFSET (0x12C00 - 0x7000)
++
++
++#define NI_DIG_FE_CNTL 0x7000
++# define NI_DIG_FE_CNTL_SOURCE_SELECT(x) ((x) & 0x3)
++# define NI_DIG_FE_CNTL_SYMCLK_FE_ON (1<<24)
++
++
++#define NI_DIG_BE_CNTL 0x7140
++# define NI_DIG_BE_CNTL_FE_SOURCE_SELECT(x) (((x) >> 8 ) & 0x3F)
++# define NI_DIG_FE_CNTL_MODE(x) (((x) >> 16) & 0x7 )
++
++#define NI_DIG_BE_EN_CNTL 0x7144
++# define NI_DIG_BE_EN_CNTL_ENABLE (1 << 0)
++# define NI_DIG_BE_EN_CNTL_SYMBCLK_ON (1 << 8)
++# define NI_DIG_BE_DPSST 0
+
+ /* Display Port block */
++#define EVERGREEN_DP0_REGISTER_OFFSET (0x730C - 0x730C)
++#define EVERGREEN_DP1_REGISTER_OFFSET (0x7F0C - 0x730C)
++#define EVERGREEN_DP2_REGISTER_OFFSET (0x10B0C - 0x730C)
++#define EVERGREEN_DP3_REGISTER_OFFSET (0x1170C - 0x730C)
++#define EVERGREEN_DP4_REGISTER_OFFSET (0x1230C - 0x730C)
++#define EVERGREEN_DP5_REGISTER_OFFSET (0x12F0C - 0x730C)
++
++
++#define EVERGREEN_DP_VID_STREAM_CNTL 0x730C
++# define EVERGREEN_DP_VID_STREAM_CNTL_ENABLE (1 << 0)
++# define EVERGREEN_DP_VID_STREAM_STATUS (1 <<16)
++#define EVERGREEN_DP_STEER_FIFO 0x7310
++# define EVERGREEN_DP_STEER_FIFO_RESET (1 << 0)
+ #define EVERGREEN_DP_SEC_CNTL 0x7280
+ # define EVERGREEN_DP_SEC_STREAM_ENABLE (1 << 0)
+ # define EVERGREEN_DP_SEC_ASP_ENABLE (1 << 4)
+@@ -266,4 +301,15 @@
+ # define EVERGREEN_DP_SEC_N_BASE_MULTIPLE(x) (((x) & 0xf) << 24)
+ # define EVERGREEN_DP_SEC_SS_EN (1 << 28)
+
++/*DCIO_UNIPHY block*/
++#define NI_DCIO_UNIPHY0_UNIPHY_TX_CONTROL1 (0x6600 -0x6600)
++#define NI_DCIO_UNIPHY1_UNIPHY_TX_CONTROL1 (0x6640 -0x6600)
++#define NI_DCIO_UNIPHY2_UNIPHY_TX_CONTROL1 (0x6680 - 0x6600)
++#define NI_DCIO_UNIPHY3_UNIPHY_TX_CONTROL1 (0x66C0 - 0x6600)
++#define NI_DCIO_UNIPHY4_UNIPHY_TX_CONTROL1 (0x6700 - 0x6600)
++#define NI_DCIO_UNIPHY5_UNIPHY_TX_CONTROL1 (0x6740 - 0x6600)
++
++#define NI_DCIO_UNIPHY0_PLL_CONTROL1 0x6618
++# define NI_DCIO_UNIPHY0_PLL_CONTROL1_ENABLE (1 << 0)
++
+ #endif
+diff --git a/drivers/gpu/drm/radeon/radeon_dp_auxch.c b/drivers/gpu/drm/radeon/radeon_dp_auxch.c
+index 3b0c229d7dcd..db64e0062689 100644
+--- a/drivers/gpu/drm/radeon/radeon_dp_auxch.c
++++ b/drivers/gpu/drm/radeon/radeon_dp_auxch.c
+@@ -105,7 +105,7 @@ radeon_dp_aux_transfer_native(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg
+
+ tmp &= AUX_HPD_SEL(0x7);
+ tmp |= AUX_HPD_SEL(chan->rec.hpd);
+- tmp |= AUX_EN | AUX_LS_READ_EN;
++ tmp |= AUX_EN | AUX_LS_READ_EN | AUX_HPD_DISCON(0x1);
+
+ WREG32(AUX_CONTROL + aux_offset[instance], tmp);
+
+diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
+index 6361d124f67d..14d45c70056e 100644
+--- a/drivers/hv/ring_buffer.c
++++ b/drivers/hv/ring_buffer.c
+@@ -103,19 +103,30 @@ static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi)
+ * there is room for the producer to send the pending packet.
+ */
+
+-static bool hv_need_to_signal_on_read(u32 old_rd,
+- struct hv_ring_buffer_info *rbi)
++static bool hv_need_to_signal_on_read(struct hv_ring_buffer_info *rbi)
+ {
+- u32 prev_write_sz;
+ u32 cur_write_sz;
+ u32 r_size;
+- u32 write_loc = rbi->ring_buffer->write_index;
++ u32 write_loc;
+ u32 read_loc = rbi->ring_buffer->read_index;
+- u32 pending_sz = rbi->ring_buffer->pending_send_sz;
++ u32 pending_sz;
+
+ /*
+- * If the other end is not blocked on write don't bother.
++ * Issue a full memory barrier before making the signaling decision.
++ * Here is the reason for having this barrier:
++ * If the reading of the pend_sz (in this function)
++ * were to be reordered and read before we commit the new read
++ * index (in the calling function) we could
++ * have a problem. If the host were to set the pending_sz after we
++ * have sampled pending_sz and go to sleep before we commit the
++ * read index, we could miss sending the interrupt. Issue a full
++ * memory barrier to address this.
+ */
++ mb();
++
++ pending_sz = rbi->ring_buffer->pending_send_sz;
++ write_loc = rbi->ring_buffer->write_index;
++ /* If the other end is not blocked on write don't bother. */
+ if (pending_sz == 0)
+ return false;
+
+@@ -123,22 +134,13 @@ static bool hv_need_to_signal_on_read(u32 old_rd,
+ cur_write_sz = write_loc >= read_loc ? r_size - (write_loc - read_loc) :
+ read_loc - write_loc;
+
+- prev_write_sz = write_loc >= old_rd ? r_size - (write_loc - old_rd) :
+- old_rd - write_loc;
+-
+-
+- if ((prev_write_sz < pending_sz) && (cur_write_sz >= pending_sz))
++ if (cur_write_sz >= pending_sz)
+ return true;
+
+ return false;
+ }
+
+-/*
+- * hv_get_next_write_location()
+- *
+- * Get the next write location for the specified ring buffer
+- *
+- */
++/* Get the next write location for the specified ring buffer. */
+ static inline u32
+ hv_get_next_write_location(struct hv_ring_buffer_info *ring_info)
+ {
+@@ -147,12 +149,7 @@ hv_get_next_write_location(struct hv_ring_buffer_info *ring_info)
+ return next;
+ }
+
+-/*
+- * hv_set_next_write_location()
+- *
+- * Set the next write location for the specified ring buffer
+- *
+- */
++/* Set the next write location for the specified ring buffer. */
+ static inline void
+ hv_set_next_write_location(struct hv_ring_buffer_info *ring_info,
+ u32 next_write_location)
+@@ -160,11 +157,7 @@ hv_set_next_write_location(struct hv_ring_buffer_info *ring_info,
+ ring_info->ring_buffer->write_index = next_write_location;
+ }
+
+-/*
+- * hv_get_next_read_location()
+- *
+- * Get the next read location for the specified ring buffer
+- */
++/* Get the next read location for the specified ring buffer. */
+ static inline u32
+ hv_get_next_read_location(struct hv_ring_buffer_info *ring_info)
+ {
+@@ -174,10 +167,8 @@ hv_get_next_read_location(struct hv_ring_buffer_info *ring_info)
+ }
+
+ /*
+- * hv_get_next_readlocation_withoffset()
+- *
+ * Get the next read location + offset for the specified ring buffer.
+- * This allows the caller to skip
++ * This allows the caller to skip.
+ */
+ static inline u32
+ hv_get_next_readlocation_withoffset(struct hv_ring_buffer_info *ring_info,
+@@ -191,13 +182,7 @@ hv_get_next_readlocation_withoffset(struct hv_ring_buffer_info *ring_info,
+ return next;
+ }
+
+-/*
+- *
+- * hv_set_next_read_location()
+- *
+- * Set the next read location for the specified ring buffer
+- *
+- */
++/* Set the next read location for the specified ring buffer. */
+ static inline void
+ hv_set_next_read_location(struct hv_ring_buffer_info *ring_info,
+ u32 next_read_location)
+@@ -206,12 +191,7 @@ hv_set_next_read_location(struct hv_ring_buffer_info *ring_info,
+ }
+
+
+-/*
+- *
+- * hv_get_ring_buffer()
+- *
+- * Get the start of the ring buffer
+- */
++/* Get the start of the ring buffer. */
+ static inline void *
+ hv_get_ring_buffer(struct hv_ring_buffer_info *ring_info)
+ {
+@@ -219,25 +199,14 @@ hv_get_ring_buffer(struct hv_ring_buffer_info *ring_info)
+ }
+
+
+-/*
+- *
+- * hv_get_ring_buffersize()
+- *
+- * Get the size of the ring buffer
+- */
++/* Get the size of the ring buffer. */
+ static inline u32
+ hv_get_ring_buffersize(struct hv_ring_buffer_info *ring_info)
+ {
+ return ring_info->ring_datasize;
+ }
+
+-/*
+- *
+- * hv_get_ring_bufferindices()
+- *
+- * Get the read and write indices as u64 of the specified ring buffer
+- *
+- */
++/* Get the read and write indices as u64 of the specified ring buffer. */
+ static inline u64
+ hv_get_ring_bufferindices(struct hv_ring_buffer_info *ring_info)
+ {
+@@ -245,12 +214,8 @@ hv_get_ring_bufferindices(struct hv_ring_buffer_info *ring_info)
+ }
+
+ /*
+- *
+- * hv_copyfrom_ringbuffer()
+- *
+ * Helper routine to copy to source from ring buffer.
+ * Assume there is enough room. Handles wrap-around in src case only!!
+- *
+ */
+ static u32 hv_copyfrom_ringbuffer(
+ struct hv_ring_buffer_info *ring_info,
+@@ -282,12 +247,8 @@ static u32 hv_copyfrom_ringbuffer(
+
+
+ /*
+- *
+- * hv_copyto_ringbuffer()
+- *
+ * Helper routine to copy from source to ring buffer.
+ * Assume there is enough room. Handles wrap-around in dest case only!!
+- *
+ */
+ static u32 hv_copyto_ringbuffer(
+ struct hv_ring_buffer_info *ring_info,
+@@ -313,13 +274,7 @@ static u32 hv_copyto_ringbuffer(
+ return start_write_offset;
+ }
+
+-/*
+- *
+- * hv_ringbuffer_get_debuginfo()
+- *
+- * Get various debug metrics for the specified ring buffer
+- *
+- */
++/* Get various debug metrics for the specified ring buffer. */
+ void hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info,
+ struct hv_ring_buffer_debug_info *debug_info)
+ {
+@@ -342,13 +297,7 @@ void hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info,
+ }
+ }
+
+-/*
+- *
+- * hv_ringbuffer_init()
+- *
+- *Initialize the ring buffer
+- *
+- */
++/* Initialize the ring buffer. */
+ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
+ void *buffer, u32 buflen)
+ {
+@@ -361,9 +310,7 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
+ ring_info->ring_buffer->read_index =
+ ring_info->ring_buffer->write_index = 0;
+
+- /*
+- * Set the feature bit for enabling flow control.
+- */
++ /* Set the feature bit for enabling flow control. */
+ ring_info->ring_buffer->feature_bits.value = 1;
+
+ ring_info->ring_size = buflen;
+@@ -374,24 +321,12 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
+ return 0;
+ }
+
+-/*
+- *
+- * hv_ringbuffer_cleanup()
+- *
+- * Cleanup the ring buffer
+- *
+- */
++/* Cleanup the ring buffer. */
+ void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info)
+ {
+ }
+
+-/*
+- *
+- * hv_ringbuffer_write()
+- *
+- * Write to the ring buffer
+- *
+- */
++/* Write to the ring buffer. */
+ int hv_ringbuffer_write(struct hv_ring_buffer_info *outring_info,
+ struct kvec *kv_list, u32 kv_count, bool *signal)
+ {
+@@ -416,10 +351,11 @@ int hv_ringbuffer_write(struct hv_ring_buffer_info *outring_info,
+ &bytes_avail_toread,
+ &bytes_avail_towrite);
+
+-
+- /* If there is only room for the packet, assume it is full. */
+- /* Otherwise, the next time around, we think the ring buffer */
+- /* is empty since the read index == write index */
++ /*
++ * If there is only room for the packet, assume it is full.
++ * Otherwise, the next time around, we think the ring buffer
++ * is empty since the read index == write index.
++ */
+ if (bytes_avail_towrite <= totalbytes_towrite) {
+ spin_unlock_irqrestore(&outring_info->ring_lock, flags);
+ return -EAGAIN;
+@@ -459,13 +395,7 @@ int hv_ringbuffer_write(struct hv_ring_buffer_info *outring_info,
+ }
+
+
+-/*
+- *
+- * hv_ringbuffer_peek()
+- *
+- * Read without advancing the read index
+- *
+- */
++/* Read without advancing the read index. */
+ int hv_ringbuffer_peek(struct hv_ring_buffer_info *Inring_info,
+ void *Buffer, u32 buflen)
+ {
+@@ -502,13 +432,7 @@ int hv_ringbuffer_peek(struct hv_ring_buffer_info *Inring_info,
+ }
+
+
+-/*
+- *
+- * hv_ringbuffer_read()
+- *
+- * Read and advance the read index
+- *
+- */
++/* Read and advance the read index. */
+ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer,
+ u32 buflen, u32 offset, bool *signal)
+ {
+@@ -517,7 +441,6 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer,
+ u32 next_read_location = 0;
+ u64 prev_indices = 0;
+ unsigned long flags;
+- u32 old_read;
+
+ if (buflen <= 0)
+ return -EINVAL;
+@@ -528,8 +451,6 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer,
+ &bytes_avail_toread,
+ &bytes_avail_towrite);
+
+- old_read = bytes_avail_toread;
+-
+ /* Make sure there is something to read */
+ if (bytes_avail_toread < buflen) {
+ spin_unlock_irqrestore(&inring_info->ring_lock, flags);
+@@ -550,9 +471,11 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer,
+ sizeof(u64),
+ next_read_location);
+
+- /* Make sure all reads are done before we update the read index since */
+- /* the writer may start writing to the read area once the read index */
+- /*is updated */
++ /*
++ * Make sure all reads are done before we update the read index since
++ * the writer may start writing to the read area once the read index
++ * is updated.
++ */
+ mb();
+
+ /* Update the read index */
+@@ -560,7 +483,7 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer,
+
+ spin_unlock_irqrestore(&inring_info->ring_lock, flags);
+
+- *signal = hv_need_to_signal_on_read(old_read, inring_info);
++ *signal = hv_need_to_signal_on_read(inring_info);
+
+ return 0;
+ }
+diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c
+index b13936dacc78..fd780bbcd07e 100644
+--- a/drivers/iio/magnetometer/ak8975.c
++++ b/drivers/iio/magnetometer/ak8975.c
+@@ -462,6 +462,8 @@ static int ak8975_setup_irq(struct ak8975_data *data)
+ int rc;
+ int irq;
+
++ init_waitqueue_head(&data->data_ready_queue);
++ clear_bit(0, &data->flags);
+ if (client->irq)
+ irq = client->irq;
+ else
+@@ -477,8 +479,6 @@ static int ak8975_setup_irq(struct ak8975_data *data)
+ return rc;
+ }
+
+- init_waitqueue_head(&data->data_ready_queue);
+- clear_bit(0, &data->flags);
+ data->eoc_irq = irq;
+
+ return rc;
+diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
+index f2f63933e8a9..5befec118a18 100644
+--- a/drivers/infiniband/core/ucm.c
++++ b/drivers/infiniband/core/ucm.c
+@@ -48,6 +48,7 @@
+
+ #include <asm/uaccess.h>
+
++#include <rdma/ib.h>
+ #include <rdma/ib_cm.h>
+ #include <rdma/ib_user_cm.h>
+ #include <rdma/ib_marshall.h>
+@@ -1104,6 +1105,9 @@ static ssize_t ib_ucm_write(struct file *filp, const char __user *buf,
+ struct ib_ucm_cmd_hdr hdr;
+ ssize_t result;
+
++ if (WARN_ON_ONCE(!ib_safe_file_access(filp)))
++ return -EACCES;
++
+ if (len < sizeof(hdr))
+ return -EINVAL;
+
+diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
+index 45d67e9228d7..81dd84d0b68b 100644
+--- a/drivers/infiniband/core/ucma.c
++++ b/drivers/infiniband/core/ucma.c
+@@ -1487,6 +1487,9 @@ static ssize_t ucma_write(struct file *filp, const char __user *buf,
+ struct rdma_ucm_cmd_hdr hdr;
+ ssize_t ret;
+
++ if (WARN_ON_ONCE(!ib_safe_file_access(filp)))
++ return -EACCES;
++
+ if (len < sizeof(hdr))
+ return -EINVAL;
+
+diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
+index 09686d49d4c1..e063b07de170 100644
+--- a/drivers/infiniband/core/uverbs_main.c
++++ b/drivers/infiniband/core/uverbs_main.c
+@@ -48,6 +48,8 @@
+
+ #include <asm/uaccess.h>
+
++#include <rdma/ib.h>
++
+ #include "uverbs.h"
+
+ MODULE_AUTHOR("Roland Dreier");
+@@ -613,6 +615,9 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
+ struct ib_uverbs_cmd_hdr hdr;
+ __u32 flags;
+
++ if (WARN_ON_ONCE(!ib_safe_file_access(filp)))
++ return -EACCES;
++
+ if (count < sizeof hdr)
+ return -EINVAL;
+
+diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c
+index 725881890c4a..619154ec8249 100644
+--- a/drivers/infiniband/hw/qib/qib_file_ops.c
++++ b/drivers/infiniband/hw/qib/qib_file_ops.c
+@@ -45,6 +45,8 @@
+ #include <linux/export.h>
+ #include <linux/uio.h>
+
++#include <rdma/ib.h>
++
+ #include "qib.h"
+ #include "qib_common.h"
+ #include "qib_user_sdma.h"
+@@ -2067,6 +2069,9 @@ static ssize_t qib_write(struct file *fp, const char __user *data,
+ ssize_t ret = 0;
+ void *dest;
+
++ if (WARN_ON_ONCE(!ib_safe_file_access(fp)))
++ return -EACCES;
++
+ if (count < sizeof(cmd.type)) {
+ ret = -EINVAL;
+ goto bail;
+diff --git a/drivers/input/misc/max8997_haptic.c b/drivers/input/misc/max8997_haptic.c
+index d0f687281339..2709fc147da6 100644
+--- a/drivers/input/misc/max8997_haptic.c
++++ b/drivers/input/misc/max8997_haptic.c
+@@ -255,12 +255,14 @@ static int max8997_haptic_probe(struct platform_device *pdev)
+ struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ const struct max8997_platform_data *pdata =
+ dev_get_platdata(iodev->dev);
+- const struct max8997_haptic_platform_data *haptic_pdata =
+- pdata->haptic_pdata;
++ const struct max8997_haptic_platform_data *haptic_pdata = NULL;
+ struct max8997_haptic *chip;
+ struct input_dev *input_dev;
+ int error;
+
++ if (pdata)
++ haptic_pdata = pdata->haptic_pdata;
++
+ if (!haptic_pdata) {
+ dev_err(&pdev->dev, "no haptic platform data\n");
+ return -EINVAL;
+diff --git a/drivers/md/md.c b/drivers/md/md.c
+index 78c1f77e7903..72dc91de80f8 100644
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -289,6 +289,8 @@ static void md_make_request(struct request_queue *q, struct bio *bio)
+ * go away inside make_request
+ */
+ sectors = bio_sectors(bio);
++ /* bio could be mergeable after passing to underlayer */
++ bio->bi_rw &= ~REQ_NOMERGE;
+ mddev->pers->make_request(mddev, bio);
+
+ cpu = part_stat_lock();
+diff --git a/drivers/misc/cxl/irq.c b/drivers/misc/cxl/irq.c
+index c8929c526691..7cafada79075 100644
+--- a/drivers/misc/cxl/irq.c
++++ b/drivers/misc/cxl/irq.c
+@@ -288,7 +288,6 @@ unsigned int cxl_map_irq(struct cxl *adapter, irq_hw_number_t hwirq,
+ void cxl_unmap_irq(unsigned int virq, void *cookie)
+ {
+ free_irq(virq, cookie);
+- irq_dispose_mapping(virq);
+ }
+
+ static int cxl_register_one_irq(struct cxl *adapter,
+diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+deleted file mode 100644
+index 80cab4ec0522..000000000000
+--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
++++ /dev/null
+@@ -1,2717 +0,0 @@
+-/******************************************************************************
+- *
+- * This file is provided under a dual BSD/GPLv2 license. When using or
+- * redistributing this file, you may do so under either license.
+- *
+- * GPL LICENSE SUMMARY
+- *
+- * Copyright(c) 2007 - 2015 Intel Corporation. All rights reserved.
+- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+- * Copyright(c) 2016 Intel Deutschland GmbH
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of version 2 of the GNU General Public License as
+- * published by the Free Software Foundation.
+- *
+- * This program is distributed in the hope that it will be useful, but
+- * WITHOUT ANY WARRANTY; without even the implied warranty of
+- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+- * General Public License for more details.
+- *
+- * You should have received a copy of the GNU General Public License
+- * along with this program; if not, write to the Free Software
+- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+- * USA
+- *
+- * The full GNU General Public License is included in this distribution
+- * in the file called COPYING.
+- *
+- * Contact Information:
+- * Intel Linux Wireless <linuxwifi@intel.com>
+- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+- *
+- * BSD LICENSE
+- *
+- * Copyright(c) 2005 - 2015 Intel Corporation. All rights reserved.
+- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+- * Copyright(c) 2016 Intel Deutschland GmbH
+- * All rights reserved.
+- *
+- * Redistribution and use in source and binary forms, with or without
+- * modification, are permitted provided that the following conditions
+- * are met:
+- *
+- * * Redistributions of source code must retain the above copyright
+- * notice, this list of conditions and the following disclaimer.
+- * * Redistributions in binary form must reproduce the above copyright
+- * notice, this list of conditions and the following disclaimer in
+- * the documentation and/or other materials provided with the
+- * distribution.
+- * * Neither the name Intel Corporation nor the names of its
+- * contributors may be used to endorse or promote products derived
+- * from this software without specific prior written permission.
+- *
+- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+- *
+- *****************************************************************************/
+-#include <linux/pci.h>
+-#include <linux/pci-aspm.h>
+-#include <linux/interrupt.h>
+-#include <linux/debugfs.h>
+-#include <linux/sched.h>
+-#include <linux/bitops.h>
+-#include <linux/gfp.h>
+-#include <linux/vmalloc.h>
+-
+-#include "iwl-drv.h"
+-#include "iwl-trans.h"
+-#include "iwl-csr.h"
+-#include "iwl-prph.h"
+-#include "iwl-scd.h"
+-#include "iwl-agn-hw.h"
+-#include "iwl-fw-error-dump.h"
+-#include "internal.h"
+-#include "iwl-fh.h"
+-
+-/* extended range in FW SRAM */
+-#define IWL_FW_MEM_EXTENDED_START 0x40000
+-#define IWL_FW_MEM_EXTENDED_END 0x57FFF
+-
+-static void iwl_pcie_free_fw_monitor(struct iwl_trans *trans)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- if (!trans_pcie->fw_mon_page)
+- return;
+-
+- dma_unmap_page(trans->dev, trans_pcie->fw_mon_phys,
+- trans_pcie->fw_mon_size, DMA_FROM_DEVICE);
+- __free_pages(trans_pcie->fw_mon_page,
+- get_order(trans_pcie->fw_mon_size));
+- trans_pcie->fw_mon_page = NULL;
+- trans_pcie->fw_mon_phys = 0;
+- trans_pcie->fw_mon_size = 0;
+-}
+-
+-static void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- struct page *page = NULL;
+- dma_addr_t phys;
+- u32 size = 0;
+- u8 power;
+-
+- if (!max_power) {
+- /* default max_power is maximum */
+- max_power = 26;
+- } else {
+- max_power += 11;
+- }
+-
+- if (WARN(max_power > 26,
+- "External buffer size for monitor is too big %d, check the FW TLV\n",
+- max_power))
+- return;
+-
+- if (trans_pcie->fw_mon_page) {
+- dma_sync_single_for_device(trans->dev, trans_pcie->fw_mon_phys,
+- trans_pcie->fw_mon_size,
+- DMA_FROM_DEVICE);
+- return;
+- }
+-
+- phys = 0;
+- for (power = max_power; power >= 11; power--) {
+- int order;
+-
+- size = BIT(power);
+- order = get_order(size);
+- page = alloc_pages(__GFP_COMP | __GFP_NOWARN | __GFP_ZERO,
+- order);
+- if (!page)
+- continue;
+-
+- phys = dma_map_page(trans->dev, page, 0, PAGE_SIZE << order,
+- DMA_FROM_DEVICE);
+- if (dma_mapping_error(trans->dev, phys)) {
+- __free_pages(page, order);
+- page = NULL;
+- continue;
+- }
+- IWL_INFO(trans,
+- "Allocated 0x%08x bytes (order %d) for firmware monitor.\n",
+- size, order);
+- break;
+- }
+-
+- if (WARN_ON_ONCE(!page))
+- return;
+-
+- if (power != max_power)
+- IWL_ERR(trans,
+- "Sorry - debug buffer is only %luK while you requested %luK\n",
+- (unsigned long)BIT(power - 10),
+- (unsigned long)BIT(max_power - 10));
+-
+- trans_pcie->fw_mon_page = page;
+- trans_pcie->fw_mon_phys = phys;
+- trans_pcie->fw_mon_size = size;
+-}
+-
+-static u32 iwl_trans_pcie_read_shr(struct iwl_trans *trans, u32 reg)
+-{
+- iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG,
+- ((reg & 0x0000ffff) | (2 << 28)));
+- return iwl_read32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG);
+-}
+-
+-static void iwl_trans_pcie_write_shr(struct iwl_trans *trans, u32 reg, u32 val)
+-{
+- iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG, val);
+- iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG,
+- ((reg & 0x0000ffff) | (3 << 28)));
+-}
+-
+-static void iwl_pcie_set_pwr(struct iwl_trans *trans, bool vaux)
+-{
+- if (trans->cfg->apmg_not_supported)
+- return;
+-
+- if (vaux && pci_pme_capable(to_pci_dev(trans->dev), PCI_D3cold))
+- iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG,
+- APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
+- ~APMG_PS_CTRL_MSK_PWR_SRC);
+- else
+- iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG,
+- APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
+- ~APMG_PS_CTRL_MSK_PWR_SRC);
+-}
+-
+-/* PCI registers */
+-#define PCI_CFG_RETRY_TIMEOUT 0x041
+-
+-static void iwl_pcie_apm_config(struct iwl_trans *trans)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- u16 lctl;
+- u16 cap;
+-
+- /*
+- * HW bug W/A for instability in PCIe bus L0S->L1 transition.
+- * Check if BIOS (or OS) enabled L1-ASPM on this device.
+- * If so (likely), disable L0S, so device moves directly L0->L1;
+- * costs negligible amount of power savings.
+- * If not (unlikely), enable L0S, so there is at least some
+- * power savings, even without L1.
+- */
+- pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl);
+- if (lctl & PCI_EXP_LNKCTL_ASPM_L1)
+- iwl_set_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
+- else
+- iwl_clear_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
+- trans->pm_support = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S);
+-
+- pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_DEVCTL2, &cap);
+- trans->ltr_enabled = cap & PCI_EXP_DEVCTL2_LTR_EN;
+- dev_info(trans->dev, "L1 %sabled - LTR %sabled\n",
+- (lctl & PCI_EXP_LNKCTL_ASPM_L1) ? "En" : "Dis",
+- trans->ltr_enabled ? "En" : "Dis");
+-}
+-
+-/*
+- * Start up NIC's basic functionality after it has been reset
+- * (e.g. after platform boot, or shutdown via iwl_pcie_apm_stop())
+- * NOTE: This does not load uCode nor start the embedded processor
+- */
+-static int iwl_pcie_apm_init(struct iwl_trans *trans)
+-{
+- int ret = 0;
+- IWL_DEBUG_INFO(trans, "Init card's basic functions\n");
+-
+- /*
+- * Use "set_bit" below rather than "write", to preserve any hardware
+- * bits already set by default after reset.
+- */
+-
+- /* Disable L0S exit timer (platform NMI Work/Around) */
+- if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
+- iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS,
+- CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
+-
+- /*
+- * Disable L0s without affecting L1;
+- * don't wait for ICH L0s (ICH bug W/A)
+- */
+- iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS,
+- CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
+-
+- /* Set FH wait threshold to maximum (HW error during stress W/A) */
+- iwl_set_bit(trans, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
+-
+- /*
+- * Enable HAP INTA (interrupt from management bus) to
+- * wake device's PCI Express link L1a -> L0s
+- */
+- iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+- CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
+-
+- iwl_pcie_apm_config(trans);
+-
+- /* Configure analog phase-lock-loop before activating to D0A */
+- if (trans->cfg->base_params->pll_cfg_val)
+- iwl_set_bit(trans, CSR_ANA_PLL_CFG,
+- trans->cfg->base_params->pll_cfg_val);
+-
+- /*
+- * Set "initialization complete" bit to move adapter from
+- * D0U* --> D0A* (powered-up active) state.
+- */
+- iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+-
+- /*
+- * Wait for clock stabilization; once stabilized, access to
+- * device-internal resources is supported, e.g. iwl_write_prph()
+- * and accesses to uCode SRAM.
+- */
+- ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
+- if (ret < 0) {
+- IWL_DEBUG_INFO(trans, "Failed to init the card\n");
+- goto out;
+- }
+-
+- if (trans->cfg->host_interrupt_operation_mode) {
+- /*
+- * This is a bit of an abuse - This is needed for 7260 / 3160
+- * only check host_interrupt_operation_mode even if this is
+- * not related to host_interrupt_operation_mode.
+- *
+- * Enable the oscillator to count wake up time for L1 exit. This
+- * consumes slightly more power (100uA) - but allows to be sure
+- * that we wake up from L1 on time.
+- *
+- * This looks weird: read twice the same register, discard the
+- * value, set a bit, and yet again, read that same register
+- * just to discard the value. But that's the way the hardware
+- * seems to like it.
+- */
+- iwl_read_prph(trans, OSC_CLK);
+- iwl_read_prph(trans, OSC_CLK);
+- iwl_set_bits_prph(trans, OSC_CLK, OSC_CLK_FORCE_CONTROL);
+- iwl_read_prph(trans, OSC_CLK);
+- iwl_read_prph(trans, OSC_CLK);
+- }
+-
+- /*
+- * Enable DMA clock and wait for it to stabilize.
+- *
+- * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0"
+- * bits do not disable clocks. This preserves any hardware
+- * bits already set by default in "CLK_CTRL_REG" after reset.
+- */
+- if (!trans->cfg->apmg_not_supported) {
+- iwl_write_prph(trans, APMG_CLK_EN_REG,
+- APMG_CLK_VAL_DMA_CLK_RQT);
+- udelay(20);
+-
+- /* Disable L1-Active */
+- iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
+- APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
+-
+- /* Clear the interrupt in APMG if the NIC is in RFKILL */
+- iwl_write_prph(trans, APMG_RTC_INT_STT_REG,
+- APMG_RTC_INT_STT_RFKILL);
+- }
+-
+- set_bit(STATUS_DEVICE_ENABLED, &trans->status);
+-
+-out:
+- return ret;
+-}
+-
+-/*
+- * Enable LP XTAL to avoid HW bug where device may consume much power if
+- * FW is not loaded after device reset. LP XTAL is disabled by default
+- * after device HW reset. Do it only if XTAL is fed by internal source.
+- * Configure device's "persistence" mode to avoid resetting XTAL again when
+- * SHRD_HW_RST occurs in S3.
+- */
+-static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans)
+-{
+- int ret;
+- u32 apmg_gp1_reg;
+- u32 apmg_xtal_cfg_reg;
+- u32 dl_cfg_reg;
+-
+- /* Force XTAL ON */
+- __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
+-
+- /* Reset entire device - do controller reset (results in SHRD_HW_RST) */
+- iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+-
+- udelay(10);
+-
+- /*
+- * Set "initialization complete" bit to move adapter from
+- * D0U* --> D0A* (powered-up active) state.
+- */
+- iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+-
+- /*
+- * Wait for clock stabilization; once stabilized, access to
+- * device-internal resources is possible.
+- */
+- ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+- 25000);
+- if (WARN_ON(ret < 0)) {
+- IWL_ERR(trans, "Access time out - failed to enable LP XTAL\n");
+- /* Release XTAL ON request */
+- __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
+- return;
+- }
+-
+- /*
+- * Clear "disable persistence" to avoid LP XTAL resetting when
+- * SHRD_HW_RST is applied in S3.
+- */
+- iwl_clear_bits_prph(trans, APMG_PCIDEV_STT_REG,
+- APMG_PCIDEV_STT_VAL_PERSIST_DIS);
+-
+- /*
+- * Force APMG XTAL to be active to prevent its disabling by HW
+- * caused by APMG idle state.
+- */
+- apmg_xtal_cfg_reg = iwl_trans_pcie_read_shr(trans,
+- SHR_APMG_XTAL_CFG_REG);
+- iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG,
+- apmg_xtal_cfg_reg |
+- SHR_APMG_XTAL_CFG_XTAL_ON_REQ);
+-
+- /*
+- * Reset entire device again - do controller reset (results in
+- * SHRD_HW_RST). Turn MAC off before proceeding.
+- */
+- iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+-
+- udelay(10);
+-
+- /* Enable LP XTAL by indirect access through CSR */
+- apmg_gp1_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_GP1_REG);
+- iwl_trans_pcie_write_shr(trans, SHR_APMG_GP1_REG, apmg_gp1_reg |
+- SHR_APMG_GP1_WF_XTAL_LP_EN |
+- SHR_APMG_GP1_CHICKEN_BIT_SELECT);
+-
+- /* Clear delay line clock power up */
+- dl_cfg_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_DL_CFG_REG);
+- iwl_trans_pcie_write_shr(trans, SHR_APMG_DL_CFG_REG, dl_cfg_reg &
+- ~SHR_APMG_DL_CFG_DL_CLOCK_POWER_UP);
+-
+- /*
+- * Enable persistence mode to avoid LP XTAL resetting when
+- * SHRD_HW_RST is applied in S3.
+- */
+- iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+- CSR_HW_IF_CONFIG_REG_PERSIST_MODE);
+-
+- /*
+- * Clear "initialization complete" bit to move adapter from
+- * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
+- */
+- iwl_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+-
+- /* Activates XTAL resources monitor */
+- __iwl_trans_pcie_set_bit(trans, CSR_MONITOR_CFG_REG,
+- CSR_MONITOR_XTAL_RESOURCES);
+-
+- /* Release XTAL ON request */
+- __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
+- udelay(10);
+-
+- /* Release APMG XTAL */
+- iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG,
+- apmg_xtal_cfg_reg &
+- ~SHR_APMG_XTAL_CFG_XTAL_ON_REQ);
+-}
+-
+-static int iwl_pcie_apm_stop_master(struct iwl_trans *trans)
+-{
+- int ret = 0;
+-
+- /* stop device's busmaster DMA activity */
+- iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
+-
+- ret = iwl_poll_bit(trans, CSR_RESET,
+- CSR_RESET_REG_FLAG_MASTER_DISABLED,
+- CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
+- if (ret < 0)
+- IWL_WARN(trans, "Master Disable Timed Out, 100 usec\n");
+-
+- IWL_DEBUG_INFO(trans, "stop master\n");
+-
+- return ret;
+-}
+-
+-static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave)
+-{
+- IWL_DEBUG_INFO(trans, "Stop card, put in low power state\n");
+-
+- if (op_mode_leave) {
+- if (!test_bit(STATUS_DEVICE_ENABLED, &trans->status))
+- iwl_pcie_apm_init(trans);
+-
+- /* inform ME that we are leaving */
+- if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000)
+- iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
+- APMG_PCIDEV_STT_VAL_WAKE_ME);
+- else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
+- iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
+- CSR_RESET_LINK_PWR_MGMT_DISABLED);
+- iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+- CSR_HW_IF_CONFIG_REG_PREPARE |
+- CSR_HW_IF_CONFIG_REG_ENABLE_PME);
+- mdelay(1);
+- iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
+- CSR_RESET_LINK_PWR_MGMT_DISABLED);
+- }
+- mdelay(5);
+- }
+-
+- clear_bit(STATUS_DEVICE_ENABLED, &trans->status);
+-
+- /* Stop device's DMA activity */
+- iwl_pcie_apm_stop_master(trans);
+-
+- if (trans->cfg->lp_xtal_workaround) {
+- iwl_pcie_apm_lp_xtal_enable(trans);
+- return;
+- }
+-
+- /* Reset the entire device */
+- iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+-
+- udelay(10);
+-
+- /*
+- * Clear "initialization complete" bit to move adapter from
+- * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
+- */
+- iwl_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+-}
+-
+-static int iwl_pcie_nic_init(struct iwl_trans *trans)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- /* nic_init */
+- spin_lock(&trans_pcie->irq_lock);
+- iwl_pcie_apm_init(trans);
+-
+- spin_unlock(&trans_pcie->irq_lock);
+-
+- iwl_pcie_set_pwr(trans, false);
+-
+- iwl_op_mode_nic_config(trans->op_mode);
+-
+- /* Allocate the RX queue, or reset if it is already allocated */
+- iwl_pcie_rx_init(trans);
+-
+- /* Allocate or reset and init all Tx and Command queues */
+- if (iwl_pcie_tx_init(trans))
+- return -ENOMEM;
+-
+- if (trans->cfg->base_params->shadow_reg_enable) {
+- /* enable shadow regs in HW */
+- iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL, 0x800FFFFF);
+- IWL_DEBUG_INFO(trans, "Enabling shadow registers in device\n");
+- }
+-
+- return 0;
+-}
+-
+-#define HW_READY_TIMEOUT (50)
+-
+-/* Note: returns poll_bit return value, which is >= 0 if success */
+-static int iwl_pcie_set_hw_ready(struct iwl_trans *trans)
+-{
+- int ret;
+-
+- iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+- CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
+-
+- /* See if we got it */
+- ret = iwl_poll_bit(trans, CSR_HW_IF_CONFIG_REG,
+- CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
+- CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
+- HW_READY_TIMEOUT);
+-
+- if (ret >= 0)
+- iwl_set_bit(trans, CSR_MBOX_SET_REG, CSR_MBOX_SET_REG_OS_ALIVE);
+-
+- IWL_DEBUG_INFO(trans, "hardware%s ready\n", ret < 0 ? " not" : "");
+- return ret;
+-}
+-
+-/* Note: returns standard 0/-ERROR code */
+-static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
+-{
+- int ret;
+- int t = 0;
+- int iter;
+-
+- IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n");
+-
+- ret = iwl_pcie_set_hw_ready(trans);
+- /* If the card is ready, exit 0 */
+- if (ret >= 0)
+- return 0;
+-
+- iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
+- CSR_RESET_LINK_PWR_MGMT_DISABLED);
+- msleep(1);
+-
+- for (iter = 0; iter < 10; iter++) {
+- /* If HW is not ready, prepare the conditions to check again */
+- iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+- CSR_HW_IF_CONFIG_REG_PREPARE);
+-
+- do {
+- ret = iwl_pcie_set_hw_ready(trans);
+- if (ret >= 0)
+- return 0;
+-
+- usleep_range(200, 1000);
+- t += 200;
+- } while (t < 150000);
+- msleep(25);
+- }
+-
+- IWL_ERR(trans, "Couldn't prepare the card\n");
+-
+- return ret;
+-}
+-
+-/*
+- * ucode
+- */
+-static int iwl_pcie_load_firmware_chunk(struct iwl_trans *trans, u32 dst_addr,
+- dma_addr_t phy_addr, u32 byte_cnt)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- int ret;
+-
+- trans_pcie->ucode_write_complete = false;
+-
+- iwl_write_direct32(trans,
+- FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
+- FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE);
+-
+- iwl_write_direct32(trans,
+- FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL),
+- dst_addr);
+-
+- iwl_write_direct32(trans,
+- FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL),
+- phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK);
+-
+- iwl_write_direct32(trans,
+- FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL),
+- (iwl_get_dma_hi_addr(phy_addr)
+- << FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt);
+-
+- iwl_write_direct32(trans,
+- FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL),
+- 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM |
+- 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX |
+- FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID);
+-
+- iwl_write_direct32(trans,
+- FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
+- FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
+- FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE |
+- FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD);
+-
+- ret = wait_event_timeout(trans_pcie->ucode_write_waitq,
+- trans_pcie->ucode_write_complete, 5 * HZ);
+- if (!ret) {
+- IWL_ERR(trans, "Failed to load firmware chunk!\n");
+- return -ETIMEDOUT;
+- }
+-
+- return 0;
+-}
+-
+-static int iwl_pcie_load_section(struct iwl_trans *trans, u8 section_num,
+- const struct fw_desc *section)
+-{
+- u8 *v_addr;
+- dma_addr_t p_addr;
+- u32 offset, chunk_sz = min_t(u32, FH_MEM_TB_MAX_LENGTH, section->len);
+- int ret = 0;
+-
+- IWL_DEBUG_FW(trans, "[%d] uCode section being loaded...\n",
+- section_num);
+-
+- v_addr = dma_alloc_coherent(trans->dev, chunk_sz, &p_addr,
+- GFP_KERNEL | __GFP_NOWARN);
+- if (!v_addr) {
+- IWL_DEBUG_INFO(trans, "Falling back to small chunks of DMA\n");
+- chunk_sz = PAGE_SIZE;
+- v_addr = dma_alloc_coherent(trans->dev, chunk_sz,
+- &p_addr, GFP_KERNEL);
+- if (!v_addr)
+- return -ENOMEM;
+- }
+-
+- for (offset = 0; offset < section->len; offset += chunk_sz) {
+- u32 copy_size, dst_addr;
+- bool extended_addr = false;
+-
+- copy_size = min_t(u32, chunk_sz, section->len - offset);
+- dst_addr = section->offset + offset;
+-
+- if (dst_addr >= IWL_FW_MEM_EXTENDED_START &&
+- dst_addr <= IWL_FW_MEM_EXTENDED_END)
+- extended_addr = true;
+-
+- if (extended_addr)
+- iwl_set_bits_prph(trans, LMPM_CHICK,
+- LMPM_CHICK_EXTENDED_ADDR_SPACE);
+-
+- memcpy(v_addr, (u8 *)section->data + offset, copy_size);
+- ret = iwl_pcie_load_firmware_chunk(trans, dst_addr, p_addr,
+- copy_size);
+-
+- if (extended_addr)
+- iwl_clear_bits_prph(trans, LMPM_CHICK,
+- LMPM_CHICK_EXTENDED_ADDR_SPACE);
+-
+- if (ret) {
+- IWL_ERR(trans,
+- "Could not load the [%d] uCode section\n",
+- section_num);
+- break;
+- }
+- }
+-
+- dma_free_coherent(trans->dev, chunk_sz, v_addr, p_addr);
+- return ret;
+-}
+-
+-/*
+- * Driver Takes the ownership on secure machine before FW load
+- * and prevent race with the BT load.
+- * W/A for ROM bug. (should be remove in the next Si step)
+- */
+-static int iwl_pcie_rsa_race_bug_wa(struct iwl_trans *trans)
+-{
+- u32 val, loop = 1000;
+-
+- /*
+- * Check the RSA semaphore is accessible.
+- * If the HW isn't locked and the rsa semaphore isn't accessible,
+- * we are in trouble.
+- */
+- val = iwl_read_prph(trans, PREG_AUX_BUS_WPROT_0);
+- if (val & (BIT(1) | BIT(17))) {
+- IWL_DEBUG_INFO(trans,
+- "can't access the RSA semaphore it is write protected\n");
+- return 0;
+- }
+-
+- /* take ownership on the AUX IF */
+- iwl_write_prph(trans, WFPM_CTRL_REG, WFPM_AUX_CTL_AUX_IF_MAC_OWNER_MSK);
+- iwl_write_prph(trans, AUX_MISC_MASTER1_EN, AUX_MISC_MASTER1_EN_SBE_MSK);
+-
+- do {
+- iwl_write_prph(trans, AUX_MISC_MASTER1_SMPHR_STATUS, 0x1);
+- val = iwl_read_prph(trans, AUX_MISC_MASTER1_SMPHR_STATUS);
+- if (val == 0x1) {
+- iwl_write_prph(trans, RSA_ENABLE, 0);
+- return 0;
+- }
+-
+- udelay(10);
+- loop--;
+- } while (loop > 0);
+-
+- IWL_ERR(trans, "Failed to take ownership on secure machine\n");
+- return -EIO;
+-}
+-
+-static int iwl_pcie_load_cpu_sections_8000(struct iwl_trans *trans,
+- const struct fw_img *image,
+- int cpu,
+- int *first_ucode_section)
+-{
+- int shift_param;
+- int i, ret = 0, sec_num = 0x1;
+- u32 val, last_read_idx = 0;
+-
+- if (cpu == 1) {
+- shift_param = 0;
+- *first_ucode_section = 0;
+- } else {
+- shift_param = 16;
+- (*first_ucode_section)++;
+- }
+-
+- for (i = *first_ucode_section; i < IWL_UCODE_SECTION_MAX; i++) {
+- last_read_idx = i;
+-
+- /*
+- * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between
+- * CPU1 to CPU2.
+- * PAGING_SEPARATOR_SECTION delimiter - separate between
+- * CPU2 non paged to CPU2 paging sec.
+- */
+- if (!image->sec[i].data ||
+- image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION ||
+- image->sec[i].offset == PAGING_SEPARATOR_SECTION) {
+- IWL_DEBUG_FW(trans,
+- "Break since Data not valid or Empty section, sec = %d\n",
+- i);
+- break;
+- }
+-
+- ret = iwl_pcie_load_section(trans, i, &image->sec[i]);
+- if (ret)
+- return ret;
+-
+- /* Notify the ucode of the loaded section number and status */
+- val = iwl_read_direct32(trans, FH_UCODE_LOAD_STATUS);
+- val = val | (sec_num << shift_param);
+- iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, val);
+- sec_num = (sec_num << 1) | 0x1;
+- }
+-
+- *first_ucode_section = last_read_idx;
+-
+- if (cpu == 1)
+- iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, 0xFFFF);
+- else
+- iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, 0xFFFFFFFF);
+-
+- return 0;
+-}
+-
+-static int iwl_pcie_load_cpu_sections(struct iwl_trans *trans,
+- const struct fw_img *image,
+- int cpu,
+- int *first_ucode_section)
+-{
+- int shift_param;
+- int i, ret = 0;
+- u32 last_read_idx = 0;
+-
+- if (cpu == 1) {
+- shift_param = 0;
+- *first_ucode_section = 0;
+- } else {
+- shift_param = 16;
+- (*first_ucode_section)++;
+- }
+-
+- for (i = *first_ucode_section; i < IWL_UCODE_SECTION_MAX; i++) {
+- last_read_idx = i;
+-
+- /*
+- * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between
+- * CPU1 to CPU2.
+- * PAGING_SEPARATOR_SECTION delimiter - separate between
+- * CPU2 non paged to CPU2 paging sec.
+- */
+- if (!image->sec[i].data ||
+- image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION ||
+- image->sec[i].offset == PAGING_SEPARATOR_SECTION) {
+- IWL_DEBUG_FW(trans,
+- "Break since Data not valid or Empty section, sec = %d\n",
+- i);
+- break;
+- }
+-
+- ret = iwl_pcie_load_section(trans, i, &image->sec[i]);
+- if (ret)
+- return ret;
+- }
+-
+- if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
+- iwl_set_bits_prph(trans,
+- CSR_UCODE_LOAD_STATUS_ADDR,
+- (LMPM_CPU_UCODE_LOADING_COMPLETED |
+- LMPM_CPU_HDRS_LOADING_COMPLETED |
+- LMPM_CPU_UCODE_LOADING_STARTED) <<
+- shift_param);
+-
+- *first_ucode_section = last_read_idx;
+-
+- return 0;
+-}
+-
+-static void iwl_pcie_apply_destination(struct iwl_trans *trans)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- const struct iwl_fw_dbg_dest_tlv *dest = trans->dbg_dest_tlv;
+- int i;
+-
+- if (dest->version)
+- IWL_ERR(trans,
+- "DBG DEST version is %d - expect issues\n",
+- dest->version);
+-
+- IWL_INFO(trans, "Applying debug destination %s\n",
+- get_fw_dbg_mode_string(dest->monitor_mode));
+-
+- if (dest->monitor_mode == EXTERNAL_MODE)
+- iwl_pcie_alloc_fw_monitor(trans, dest->size_power);
+- else
+- IWL_WARN(trans, "PCI should have external buffer debug\n");
+-
+- for (i = 0; i < trans->dbg_dest_reg_num; i++) {
+- u32 addr = le32_to_cpu(dest->reg_ops[i].addr);
+- u32 val = le32_to_cpu(dest->reg_ops[i].val);
+-
+- switch (dest->reg_ops[i].op) {
+- case CSR_ASSIGN:
+- iwl_write32(trans, addr, val);
+- break;
+- case CSR_SETBIT:
+- iwl_set_bit(trans, addr, BIT(val));
+- break;
+- case CSR_CLEARBIT:
+- iwl_clear_bit(trans, addr, BIT(val));
+- break;
+- case PRPH_ASSIGN:
+- iwl_write_prph(trans, addr, val);
+- break;
+- case PRPH_SETBIT:
+- iwl_set_bits_prph(trans, addr, BIT(val));
+- break;
+- case PRPH_CLEARBIT:
+- iwl_clear_bits_prph(trans, addr, BIT(val));
+- break;
+- case PRPH_BLOCKBIT:
+- if (iwl_read_prph(trans, addr) & BIT(val)) {
+- IWL_ERR(trans,
+- "BIT(%u) in address 0x%x is 1, stopping FW configuration\n",
+- val, addr);
+- goto monitor;
+- }
+- break;
+- default:
+- IWL_ERR(trans, "FW debug - unknown OP %d\n",
+- dest->reg_ops[i].op);
+- break;
+- }
+- }
+-
+-monitor:
+- if (dest->monitor_mode == EXTERNAL_MODE && trans_pcie->fw_mon_size) {
+- iwl_write_prph(trans, le32_to_cpu(dest->base_reg),
+- trans_pcie->fw_mon_phys >> dest->base_shift);
+- if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
+- iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
+- (trans_pcie->fw_mon_phys +
+- trans_pcie->fw_mon_size - 256) >>
+- dest->end_shift);
+- else
+- iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
+- (trans_pcie->fw_mon_phys +
+- trans_pcie->fw_mon_size) >>
+- dest->end_shift);
+- }
+-}
+-
+-static int iwl_pcie_load_given_ucode(struct iwl_trans *trans,
+- const struct fw_img *image)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- int ret = 0;
+- int first_ucode_section;
+-
+- IWL_DEBUG_FW(trans, "working with %s CPU\n",
+- image->is_dual_cpus ? "Dual" : "Single");
+-
+- /* load to FW the binary non secured sections of CPU1 */
+- ret = iwl_pcie_load_cpu_sections(trans, image, 1, &first_ucode_section);
+- if (ret)
+- return ret;
+-
+- if (image->is_dual_cpus) {
+- /* set CPU2 header address */
+- iwl_write_prph(trans,
+- LMPM_SECURE_UCODE_LOAD_CPU2_HDR_ADDR,
+- LMPM_SECURE_CPU2_HDR_MEM_SPACE);
+-
+- /* load to FW the binary sections of CPU2 */
+- ret = iwl_pcie_load_cpu_sections(trans, image, 2,
+- &first_ucode_section);
+- if (ret)
+- return ret;
+- }
+-
+- /* supported for 7000 only for the moment */
+- if (iwlwifi_mod_params.fw_monitor &&
+- trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
+- iwl_pcie_alloc_fw_monitor(trans, 0);
+-
+- if (trans_pcie->fw_mon_size) {
+- iwl_write_prph(trans, MON_BUFF_BASE_ADDR,
+- trans_pcie->fw_mon_phys >> 4);
+- iwl_write_prph(trans, MON_BUFF_END_ADDR,
+- (trans_pcie->fw_mon_phys +
+- trans_pcie->fw_mon_size) >> 4);
+- }
+- } else if (trans->dbg_dest_tlv) {
+- iwl_pcie_apply_destination(trans);
+- }
+-
+- /* release CPU reset */
+- iwl_write32(trans, CSR_RESET, 0);
+-
+- return 0;
+-}
+-
+-static int iwl_pcie_load_given_ucode_8000(struct iwl_trans *trans,
+- const struct fw_img *image)
+-{
+- int ret = 0;
+- int first_ucode_section;
+-
+- IWL_DEBUG_FW(trans, "working with %s CPU\n",
+- image->is_dual_cpus ? "Dual" : "Single");
+-
+- if (trans->dbg_dest_tlv)
+- iwl_pcie_apply_destination(trans);
+-
+- /* TODO: remove in the next Si step */
+- ret = iwl_pcie_rsa_race_bug_wa(trans);
+- if (ret)
+- return ret;
+-
+- /* configure the ucode to be ready to get the secured image */
+- /* release CPU reset */
+- iwl_write_prph(trans, RELEASE_CPU_RESET, RELEASE_CPU_RESET_BIT);
+-
+- /* load to FW the binary Secured sections of CPU1 */
+- ret = iwl_pcie_load_cpu_sections_8000(trans, image, 1,
+- &first_ucode_section);
+- if (ret)
+- return ret;
+-
+- /* load to FW the binary sections of CPU2 */
+- return iwl_pcie_load_cpu_sections_8000(trans, image, 2,
+- &first_ucode_section);
+-}
+-
+-static int iwl_trans_pcie_start_fw(struct iwl_trans *trans,
+- const struct fw_img *fw, bool run_in_rfkill)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- bool hw_rfkill;
+- int ret;
+-
+- mutex_lock(&trans_pcie->mutex);
+-
+- /* Someone called stop_device, don't try to start_fw */
+- if (trans_pcie->is_down) {
+- IWL_WARN(trans,
+- "Can't start_fw since the HW hasn't been started\n");
+- ret = EIO;
+- goto out;
+- }
+-
+- /* This may fail if AMT took ownership of the device */
+- if (iwl_pcie_prepare_card_hw(trans)) {
+- IWL_WARN(trans, "Exit HW not ready\n");
+- ret = -EIO;
+- goto out;
+- }
+-
+- iwl_enable_rfkill_int(trans);
+-
+- /* If platform's RF_KILL switch is NOT set to KILL */
+- hw_rfkill = iwl_is_rfkill_set(trans);
+- if (hw_rfkill)
+- set_bit(STATUS_RFKILL, &trans->status);
+- else
+- clear_bit(STATUS_RFKILL, &trans->status);
+- iwl_trans_pcie_rf_kill(trans, hw_rfkill);
+- if (hw_rfkill && !run_in_rfkill) {
+- ret = -ERFKILL;
+- goto out;
+- }
+-
+- iwl_write32(trans, CSR_INT, 0xFFFFFFFF);
+-
+- ret = iwl_pcie_nic_init(trans);
+- if (ret) {
+- IWL_ERR(trans, "Unable to init nic\n");
+- goto out;
+- }
+-
+- /* make sure rfkill handshake bits are cleared */
+- iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+- iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR,
+- CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+-
+- /* clear (again), then enable host interrupts */
+- iwl_write32(trans, CSR_INT, 0xFFFFFFFF);
+- iwl_enable_interrupts(trans);
+-
+- /* really make sure rfkill handshake bits are cleared */
+- iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+- iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+-
+- /* Load the given image to the HW */
+- if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
+- ret = iwl_pcie_load_given_ucode_8000(trans, fw);
+- else
+- ret = iwl_pcie_load_given_ucode(trans, fw);
+-
+-out:
+- mutex_unlock(&trans_pcie->mutex);
+- return ret;
+-}
+-
+-static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr)
+-{
+- iwl_pcie_reset_ict(trans);
+- iwl_pcie_tx_start(trans, scd_addr);
+-}
+-
+-static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- bool hw_rfkill, was_hw_rfkill;
+-
+- lockdep_assert_held(&trans_pcie->mutex);
+-
+- if (trans_pcie->is_down)
+- return;
+-
+- trans_pcie->is_down = true;
+-
+- was_hw_rfkill = iwl_is_rfkill_set(trans);
+-
+- /* tell the device to stop sending interrupts */
+- spin_lock(&trans_pcie->irq_lock);
+- iwl_disable_interrupts(trans);
+- spin_unlock(&trans_pcie->irq_lock);
+-
+- /* device going down, Stop using ICT table */
+- iwl_pcie_disable_ict(trans);
+-
+- /*
+- * If a HW restart happens during firmware loading,
+- * then the firmware loading might call this function
+- * and later it might be called again due to the
+- * restart. So don't process again if the device is
+- * already dead.
+- */
+- if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) {
+- IWL_DEBUG_INFO(trans, "DEVICE_ENABLED bit was set and is now cleared\n");
+- iwl_pcie_tx_stop(trans);
+- iwl_pcie_rx_stop(trans);
+-
+- /* Power-down device's busmaster DMA clocks */
+- if (!trans->cfg->apmg_not_supported) {
+- iwl_write_prph(trans, APMG_CLK_DIS_REG,
+- APMG_CLK_VAL_DMA_CLK_RQT);
+- udelay(5);
+- }
+- }
+-
+- /* Make sure (redundant) we've released our request to stay awake */
+- iwl_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+-
+- /* Stop the device, and put it in low power state */
+- iwl_pcie_apm_stop(trans, false);
+-
+- /* stop and reset the on-board processor */
+- iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+- udelay(20);
+-
+- /*
+- * Upon stop, the APM issues an interrupt if HW RF kill is set.
+- * This is a bug in certain verions of the hardware.
+- * Certain devices also keep sending HW RF kill interrupt all
+- * the time, unless the interrupt is ACKed even if the interrupt
+- * should be masked. Re-ACK all the interrupts here.
+- */
+- spin_lock(&trans_pcie->irq_lock);
+- iwl_disable_interrupts(trans);
+- spin_unlock(&trans_pcie->irq_lock);
+-
+-
+- /* clear all status bits */
+- clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status);
+- clear_bit(STATUS_INT_ENABLED, &trans->status);
+- clear_bit(STATUS_TPOWER_PMI, &trans->status);
+- clear_bit(STATUS_RFKILL, &trans->status);
+-
+- /*
+- * Even if we stop the HW, we still want the RF kill
+- * interrupt
+- */
+- iwl_enable_rfkill_int(trans);
+-
+- /*
+- * Check again since the RF kill state may have changed while
+- * all the interrupts were disabled, in this case we couldn't
+- * receive the RF kill interrupt and update the state in the
+- * op_mode.
+- * Don't call the op_mode if the rkfill state hasn't changed.
+- * This allows the op_mode to call stop_device from the rfkill
+- * notification without endless recursion. Under very rare
+- * circumstances, we might have a small recursion if the rfkill
+- * state changed exactly now while we were called from stop_device.
+- * This is very unlikely but can happen and is supported.
+- */
+- hw_rfkill = iwl_is_rfkill_set(trans);
+- if (hw_rfkill)
+- set_bit(STATUS_RFKILL, &trans->status);
+- else
+- clear_bit(STATUS_RFKILL, &trans->status);
+- if (hw_rfkill != was_hw_rfkill)
+- iwl_trans_pcie_rf_kill(trans, hw_rfkill);
+-
+- /* re-take ownership to prevent other users from stealing the deivce */
+- iwl_pcie_prepare_card_hw(trans);
+-}
+-
+-static void iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- mutex_lock(&trans_pcie->mutex);
+- _iwl_trans_pcie_stop_device(trans, low_power);
+- mutex_unlock(&trans_pcie->mutex);
+-}
+-
+-void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state)
+-{
+- struct iwl_trans_pcie __maybe_unused *trans_pcie =
+- IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- lockdep_assert_held(&trans_pcie->mutex);
+-
+- if (iwl_op_mode_hw_rf_kill(trans->op_mode, state))
+- _iwl_trans_pcie_stop_device(trans, true);
+-}
+-
+-static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- if (trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3) {
+- /* Enable persistence mode to avoid reset */
+- iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+- CSR_HW_IF_CONFIG_REG_PERSIST_MODE);
+- }
+-
+- iwl_disable_interrupts(trans);
+-
+- /*
+- * in testing mode, the host stays awake and the
+- * hardware won't be reset (not even partially)
+- */
+- if (test)
+- return;
+-
+- iwl_pcie_disable_ict(trans);
+-
+- synchronize_irq(trans_pcie->pci_dev->irq);
+-
+- iwl_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+- iwl_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+-
+- if (trans->system_pm_mode == IWL_PLAT_PM_MODE_D3) {
+- /*
+- * reset TX queues -- some of their registers reset during S3
+- * so if we don't reset everything here the D3 image would try
+- * to execute some invalid memory upon resume
+- */
+- iwl_trans_pcie_tx_reset(trans);
+- }
+-
+- iwl_pcie_set_pwr(trans, true);
+-}
+-
+-static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
+- enum iwl_d3_status *status,
+- bool test)
+-{
+- u32 val;
+- int ret;
+-
+- if (test) {
+- iwl_enable_interrupts(trans);
+- *status = IWL_D3_STATUS_ALIVE;
+- return 0;
+- }
+-
+- /*
+- * Also enables interrupts - none will happen as the device doesn't
+- * know we're waking it up, only when the opmode actually tells it
+- * after this call.
+- */
+- iwl_pcie_reset_ict(trans);
+-
+- iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+- iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+-
+- if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
+- udelay(2);
+-
+- ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+- 25000);
+- if (ret < 0) {
+- IWL_ERR(trans, "Failed to resume the device (mac ready)\n");
+- return ret;
+- }
+-
+- iwl_pcie_set_pwr(trans, false);
+-
+- if (trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3) {
+- iwl_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+- } else {
+- iwl_trans_pcie_tx_reset(trans);
+-
+- ret = iwl_pcie_rx_init(trans);
+- if (ret) {
+- IWL_ERR(trans,
+- "Failed to resume the device (RX reset)\n");
+- return ret;
+- }
+- }
+-
+- val = iwl_read32(trans, CSR_RESET);
+- if (val & CSR_RESET_REG_FLAG_NEVO_RESET)
+- *status = IWL_D3_STATUS_RESET;
+- else
+- *status = IWL_D3_STATUS_ALIVE;
+-
+- return 0;
+-}
+-
+-static int _iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- bool hw_rfkill;
+- int err;
+-
+- lockdep_assert_held(&trans_pcie->mutex);
+-
+- err = iwl_pcie_prepare_card_hw(trans);
+- if (err) {
+- IWL_ERR(trans, "Error while preparing HW: %d\n", err);
+- return err;
+- }
+-
+- /* Reset the entire device */
+- iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+-
+- usleep_range(10, 15);
+-
+- iwl_pcie_apm_init(trans);
+-
+- /* From now on, the op_mode will be kept updated about RF kill state */
+- iwl_enable_rfkill_int(trans);
+-
+- /* Set is_down to false here so that...*/
+- trans_pcie->is_down = false;
+-
+- hw_rfkill = iwl_is_rfkill_set(trans);
+- if (hw_rfkill)
+- set_bit(STATUS_RFKILL, &trans->status);
+- else
+- clear_bit(STATUS_RFKILL, &trans->status);
+- /* ... rfkill can call stop_device and set it false if needed */
+- iwl_trans_pcie_rf_kill(trans, hw_rfkill);
+-
+- return 0;
+-}
+-
+-static int iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- int ret;
+-
+- mutex_lock(&trans_pcie->mutex);
+- ret = _iwl_trans_pcie_start_hw(trans, low_power);
+- mutex_unlock(&trans_pcie->mutex);
+-
+- return ret;
+-}
+-
+-static void iwl_trans_pcie_op_mode_leave(struct iwl_trans *trans)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- mutex_lock(&trans_pcie->mutex);
+-
+- /* disable interrupts - don't enable HW RF kill interrupt */
+- spin_lock(&trans_pcie->irq_lock);
+- iwl_disable_interrupts(trans);
+- spin_unlock(&trans_pcie->irq_lock);
+-
+- iwl_pcie_apm_stop(trans, true);
+-
+- spin_lock(&trans_pcie->irq_lock);
+- iwl_disable_interrupts(trans);
+- spin_unlock(&trans_pcie->irq_lock);
+-
+- iwl_pcie_disable_ict(trans);
+-
+- mutex_unlock(&trans_pcie->mutex);
+-
+- synchronize_irq(trans_pcie->pci_dev->irq);
+-}
+-
+-static void iwl_trans_pcie_write8(struct iwl_trans *trans, u32 ofs, u8 val)
+-{
+- writeb(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
+-}
+-
+-static void iwl_trans_pcie_write32(struct iwl_trans *trans, u32 ofs, u32 val)
+-{
+- writel(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
+-}
+-
+-static u32 iwl_trans_pcie_read32(struct iwl_trans *trans, u32 ofs)
+-{
+- return readl(IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
+-}
+-
+-static u32 iwl_trans_pcie_read_prph(struct iwl_trans *trans, u32 reg)
+-{
+- iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_RADDR,
+- ((reg & 0x000FFFFF) | (3 << 24)));
+- return iwl_trans_pcie_read32(trans, HBUS_TARG_PRPH_RDAT);
+-}
+-
+-static void iwl_trans_pcie_write_prph(struct iwl_trans *trans, u32 addr,
+- u32 val)
+-{
+- iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WADDR,
+- ((addr & 0x000FFFFF) | (3 << 24)));
+- iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WDAT, val);
+-}
+-
+-static int iwl_pcie_dummy_napi_poll(struct napi_struct *napi, int budget)
+-{
+- WARN_ON(1);
+- return 0;
+-}
+-
+-static void iwl_trans_pcie_configure(struct iwl_trans *trans,
+- const struct iwl_trans_config *trans_cfg)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- trans_pcie->cmd_queue = trans_cfg->cmd_queue;
+- trans_pcie->cmd_fifo = trans_cfg->cmd_fifo;
+- trans_pcie->cmd_q_wdg_timeout = trans_cfg->cmd_q_wdg_timeout;
+- if (WARN_ON(trans_cfg->n_no_reclaim_cmds > MAX_NO_RECLAIM_CMDS))
+- trans_pcie->n_no_reclaim_cmds = 0;
+- else
+- trans_pcie->n_no_reclaim_cmds = trans_cfg->n_no_reclaim_cmds;
+- if (trans_pcie->n_no_reclaim_cmds)
+- memcpy(trans_pcie->no_reclaim_cmds, trans_cfg->no_reclaim_cmds,
+- trans_pcie->n_no_reclaim_cmds * sizeof(u8));
+-
+- trans_pcie->rx_buf_size = trans_cfg->rx_buf_size;
+- trans_pcie->rx_page_order =
+- iwl_trans_get_rb_size_order(trans_pcie->rx_buf_size);
+-
+- trans_pcie->wide_cmd_header = trans_cfg->wide_cmd_header;
+- trans_pcie->bc_table_dword = trans_cfg->bc_table_dword;
+- trans_pcie->scd_set_active = trans_cfg->scd_set_active;
+- trans_pcie->sw_csum_tx = trans_cfg->sw_csum_tx;
+-
+- trans->command_groups = trans_cfg->command_groups;
+- trans->command_groups_size = trans_cfg->command_groups_size;
+-
+- /* init ref_count to 1 (should be cleared when ucode is loaded) */
+- trans_pcie->ref_count = 1;
+-
+- /* Initialize NAPI here - it should be before registering to mac80211
+- * in the opmode but after the HW struct is allocated.
+- * As this function may be called again in some corner cases don't
+- * do anything if NAPI was already initialized.
+- */
+- if (!trans_pcie->napi.poll) {
+- init_dummy_netdev(&trans_pcie->napi_dev);
+- netif_napi_add(&trans_pcie->napi_dev, &trans_pcie->napi,
+- iwl_pcie_dummy_napi_poll, 64);
+- }
+-}
+-
+-void iwl_trans_pcie_free(struct iwl_trans *trans)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- int i;
+-
+- synchronize_irq(trans_pcie->pci_dev->irq);
+-
+- iwl_pcie_tx_free(trans);
+- iwl_pcie_rx_free(trans);
+-
+- free_irq(trans_pcie->pci_dev->irq, trans);
+- iwl_pcie_free_ict(trans);
+-
+- pci_disable_msi(trans_pcie->pci_dev);
+- iounmap(trans_pcie->hw_base);
+- pci_release_regions(trans_pcie->pci_dev);
+- pci_disable_device(trans_pcie->pci_dev);
+-
+- if (trans_pcie->napi.poll)
+- netif_napi_del(&trans_pcie->napi);
+-
+- iwl_pcie_free_fw_monitor(trans);
+-
+- for_each_possible_cpu(i) {
+- struct iwl_tso_hdr_page *p =
+- per_cpu_ptr(trans_pcie->tso_hdr_page, i);
+-
+- if (p->page)
+- __free_page(p->page);
+- }
+-
+- free_percpu(trans_pcie->tso_hdr_page);
+- iwl_trans_free(trans);
+-}
+-
+-static void iwl_trans_pcie_set_pmi(struct iwl_trans *trans, bool state)
+-{
+- if (state)
+- set_bit(STATUS_TPOWER_PMI, &trans->status);
+- else
+- clear_bit(STATUS_TPOWER_PMI, &trans->status);
+-}
+-
+-static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans,
+- unsigned long *flags)
+-{
+- int ret;
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- spin_lock_irqsave(&trans_pcie->reg_lock, *flags);
+-
+- if (trans_pcie->cmd_hold_nic_awake)
+- goto out;
+-
+- /* this bit wakes up the NIC */
+- __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+- if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
+- udelay(2);
+-
+- /*
+- * These bits say the device is running, and should keep running for
+- * at least a short while (at least as long as MAC_ACCESS_REQ stays 1),
+- * but they do not indicate that embedded SRAM is restored yet;
+- * 3945 and 4965 have volatile SRAM, and must save/restore contents
+- * to/from host DRAM when sleeping/waking for power-saving.
+- * Each direction takes approximately 1/4 millisecond; with this
+- * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a
+- * series of register accesses are expected (e.g. reading Event Log),
+- * to keep device from sleeping.
+- *
+- * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that
+- * SRAM is okay/restored. We don't check that here because this call
+- * is just for hardware register access; but GP1 MAC_SLEEP check is a
+- * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log).
+- *
+- * 5000 series and later (including 1000 series) have non-volatile SRAM,
+- * and do not save/restore SRAM when power cycling.
+- */
+- ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
+- (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
+- CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000);
+- if (unlikely(ret < 0)) {
+- iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI);
+- WARN_ONCE(1,
+- "Timeout waiting for hardware access (CSR_GP_CNTRL 0x%08x)\n",
+- iwl_read32(trans, CSR_GP_CNTRL));
+- spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags);
+- return false;
+- }
+-
+-out:
+- /*
+- * Fool sparse by faking we release the lock - sparse will
+- * track nic_access anyway.
+- */
+- __release(&trans_pcie->reg_lock);
+- return true;
+-}
+-
+-static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans,
+- unsigned long *flags)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- lockdep_assert_held(&trans_pcie->reg_lock);
+-
+- /*
+- * Fool sparse by faking we acquiring the lock - sparse will
+- * track nic_access anyway.
+- */
+- __acquire(&trans_pcie->reg_lock);
+-
+- if (trans_pcie->cmd_hold_nic_awake)
+- goto out;
+-
+- __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+- /*
+- * Above we read the CSR_GP_CNTRL register, which will flush
+- * any previous writes, but we need the write that clears the
+- * MAC_ACCESS_REQ bit to be performed before any other writes
+- * scheduled on different CPUs (after we drop reg_lock).
+- */
+- mmiowb();
+-out:
+- spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags);
+-}
+-
+-static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr,
+- void *buf, int dwords)
+-{
+- unsigned long flags;
+- int offs, ret = 0;
+- u32 *vals = buf;
+-
+- if (iwl_trans_grab_nic_access(trans, &flags)) {
+- iwl_write32(trans, HBUS_TARG_MEM_RADDR, addr);
+- for (offs = 0; offs < dwords; offs++)
+- vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
+- iwl_trans_release_nic_access(trans, &flags);
+- } else {
+- ret = -EBUSY;
+- }
+- return ret;
+-}
+-
+-static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr,
+- const void *buf, int dwords)
+-{
+- unsigned long flags;
+- int offs, ret = 0;
+- const u32 *vals = buf;
+-
+- if (iwl_trans_grab_nic_access(trans, &flags)) {
+- iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr);
+- for (offs = 0; offs < dwords; offs++)
+- iwl_write32(trans, HBUS_TARG_MEM_WDAT,
+- vals ? vals[offs] : 0);
+- iwl_trans_release_nic_access(trans, &flags);
+- } else {
+- ret = -EBUSY;
+- }
+- return ret;
+-}
+-
+-static void iwl_trans_pcie_freeze_txq_timer(struct iwl_trans *trans,
+- unsigned long txqs,
+- bool freeze)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- int queue;
+-
+- for_each_set_bit(queue, &txqs, BITS_PER_LONG) {
+- struct iwl_txq *txq = &trans_pcie->txq[queue];
+- unsigned long now;
+-
+- spin_lock_bh(&txq->lock);
+-
+- now = jiffies;
+-
+- if (txq->frozen == freeze)
+- goto next_queue;
+-
+- IWL_DEBUG_TX_QUEUES(trans, "%s TXQ %d\n",
+- freeze ? "Freezing" : "Waking", queue);
+-
+- txq->frozen = freeze;
+-
+- if (txq->q.read_ptr == txq->q.write_ptr)
+- goto next_queue;
+-
+- if (freeze) {
+- if (unlikely(time_after(now,
+- txq->stuck_timer.expires))) {
+- /*
+- * The timer should have fired, maybe it is
+- * spinning right now on the lock.
+- */
+- goto next_queue;
+- }
+- /* remember how long until the timer fires */
+- txq->frozen_expiry_remainder =
+- txq->stuck_timer.expires - now;
+- del_timer(&txq->stuck_timer);
+- goto next_queue;
+- }
+-
+- /*
+- * Wake a non-empty queue -> arm timer with the
+- * remainder before it froze
+- */
+- mod_timer(&txq->stuck_timer,
+- now + txq->frozen_expiry_remainder);
+-
+-next_queue:
+- spin_unlock_bh(&txq->lock);
+- }
+-}
+-
+-static void iwl_trans_pcie_block_txq_ptrs(struct iwl_trans *trans, bool block)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- int i;
+-
+- for (i = 0; i < trans->cfg->base_params->num_of_queues; i++) {
+- struct iwl_txq *txq = &trans_pcie->txq[i];
+-
+- if (i == trans_pcie->cmd_queue)
+- continue;
+-
+- spin_lock_bh(&txq->lock);
+-
+- if (!block && !(WARN_ON_ONCE(!txq->block))) {
+- txq->block--;
+- if (!txq->block) {
+- iwl_write32(trans, HBUS_TARG_WRPTR,
+- txq->q.write_ptr | (i << 8));
+- }
+- } else if (block) {
+- txq->block++;
+- }
+-
+- spin_unlock_bh(&txq->lock);
+- }
+-}
+-
+-#define IWL_FLUSH_WAIT_MS 2000
+-
+-static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, u32 txq_bm)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- struct iwl_txq *txq;
+- struct iwl_queue *q;
+- int cnt;
+- unsigned long now = jiffies;
+- u32 scd_sram_addr;
+- u8 buf[16];
+- int ret = 0;
+-
+- /* waiting for all the tx frames complete might take a while */
+- for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) {
+- u8 wr_ptr;
+-
+- if (cnt == trans_pcie->cmd_queue)
+- continue;
+- if (!test_bit(cnt, trans_pcie->queue_used))
+- continue;
+- if (!(BIT(cnt) & txq_bm))
+- continue;
+-
+- IWL_DEBUG_TX_QUEUES(trans, "Emptying queue %d...\n", cnt);
+- txq = &trans_pcie->txq[cnt];
+- q = &txq->q;
+- wr_ptr = ACCESS_ONCE(q->write_ptr);
+-
+- while (q->read_ptr != ACCESS_ONCE(q->write_ptr) &&
+- !time_after(jiffies,
+- now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS))) {
+- u8 write_ptr = ACCESS_ONCE(q->write_ptr);
+-
+- if (WARN_ONCE(wr_ptr != write_ptr,
+- "WR pointer moved while flushing %d -> %d\n",
+- wr_ptr, write_ptr))
+- return -ETIMEDOUT;
+- msleep(1);
+- }
+-
+- if (q->read_ptr != q->write_ptr) {
+- IWL_ERR(trans,
+- "fail to flush all tx fifo queues Q %d\n", cnt);
+- ret = -ETIMEDOUT;
+- break;
+- }
+- IWL_DEBUG_TX_QUEUES(trans, "Queue %d is now empty.\n", cnt);
+- }
+-
+- if (!ret)
+- return 0;
+-
+- IWL_ERR(trans, "Current SW read_ptr %d write_ptr %d\n",
+- txq->q.read_ptr, txq->q.write_ptr);
+-
+- scd_sram_addr = trans_pcie->scd_base_addr +
+- SCD_TX_STTS_QUEUE_OFFSET(txq->q.id);
+- iwl_trans_read_mem_bytes(trans, scd_sram_addr, buf, sizeof(buf));
+-
+- iwl_print_hex_error(trans, buf, sizeof(buf));
+-
+- for (cnt = 0; cnt < FH_TCSR_CHNL_NUM; cnt++)
+- IWL_ERR(trans, "FH TRBs(%d) = 0x%08x\n", cnt,
+- iwl_read_direct32(trans, FH_TX_TRB_REG(cnt)));
+-
+- for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) {
+- u32 status = iwl_read_prph(trans, SCD_QUEUE_STATUS_BITS(cnt));
+- u8 fifo = (status >> SCD_QUEUE_STTS_REG_POS_TXF) & 0x7;
+- bool active = !!(status & BIT(SCD_QUEUE_STTS_REG_POS_ACTIVE));
+- u32 tbl_dw =
+- iwl_trans_read_mem32(trans, trans_pcie->scd_base_addr +
+- SCD_TRANS_TBL_OFFSET_QUEUE(cnt));
+-
+- if (cnt & 0x1)
+- tbl_dw = (tbl_dw & 0xFFFF0000) >> 16;
+- else
+- tbl_dw = tbl_dw & 0x0000FFFF;
+-
+- IWL_ERR(trans,
+- "Q %d is %sactive and mapped to fifo %d ra_tid 0x%04x [%d,%d]\n",
+- cnt, active ? "" : "in", fifo, tbl_dw,
+- iwl_read_prph(trans, SCD_QUEUE_RDPTR(cnt)) &
+- (TFD_QUEUE_SIZE_MAX - 1),
+- iwl_read_prph(trans, SCD_QUEUE_WRPTR(cnt)));
+- }
+-
+- return ret;
+-}
+-
+-static void iwl_trans_pcie_set_bits_mask(struct iwl_trans *trans, u32 reg,
+- u32 mask, u32 value)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- unsigned long flags;
+-
+- spin_lock_irqsave(&trans_pcie->reg_lock, flags);
+- __iwl_trans_pcie_set_bits_mask(trans, reg, mask, value);
+- spin_unlock_irqrestore(&trans_pcie->reg_lock, flags);
+-}
+-
+-void iwl_trans_pcie_ref(struct iwl_trans *trans)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- unsigned long flags;
+-
+- if (iwlwifi_mod_params.d0i3_disable)
+- return;
+-
+- spin_lock_irqsave(&trans_pcie->ref_lock, flags);
+- IWL_DEBUG_RPM(trans, "ref_counter: %d\n", trans_pcie->ref_count);
+- trans_pcie->ref_count++;
+- spin_unlock_irqrestore(&trans_pcie->ref_lock, flags);
+-}
+-
+-void iwl_trans_pcie_unref(struct iwl_trans *trans)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- unsigned long flags;
+-
+- if (iwlwifi_mod_params.d0i3_disable)
+- return;
+-
+- spin_lock_irqsave(&trans_pcie->ref_lock, flags);
+- IWL_DEBUG_RPM(trans, "ref_counter: %d\n", trans_pcie->ref_count);
+- if (WARN_ON_ONCE(trans_pcie->ref_count == 0)) {
+- spin_unlock_irqrestore(&trans_pcie->ref_lock, flags);
+- return;
+- }
+- trans_pcie->ref_count--;
+- spin_unlock_irqrestore(&trans_pcie->ref_lock, flags);
+-}
+-
+-static const char *get_csr_string(int cmd)
+-{
+-#define IWL_CMD(x) case x: return #x
+- switch (cmd) {
+- IWL_CMD(CSR_HW_IF_CONFIG_REG);
+- IWL_CMD(CSR_INT_COALESCING);
+- IWL_CMD(CSR_INT);
+- IWL_CMD(CSR_INT_MASK);
+- IWL_CMD(CSR_FH_INT_STATUS);
+- IWL_CMD(CSR_GPIO_IN);
+- IWL_CMD(CSR_RESET);
+- IWL_CMD(CSR_GP_CNTRL);
+- IWL_CMD(CSR_HW_REV);
+- IWL_CMD(CSR_EEPROM_REG);
+- IWL_CMD(CSR_EEPROM_GP);
+- IWL_CMD(CSR_OTP_GP_REG);
+- IWL_CMD(CSR_GIO_REG);
+- IWL_CMD(CSR_GP_UCODE_REG);
+- IWL_CMD(CSR_GP_DRIVER_REG);
+- IWL_CMD(CSR_UCODE_DRV_GP1);
+- IWL_CMD(CSR_UCODE_DRV_GP2);
+- IWL_CMD(CSR_LED_REG);
+- IWL_CMD(CSR_DRAM_INT_TBL_REG);
+- IWL_CMD(CSR_GIO_CHICKEN_BITS);
+- IWL_CMD(CSR_ANA_PLL_CFG);
+- IWL_CMD(CSR_HW_REV_WA_REG);
+- IWL_CMD(CSR_MONITOR_STATUS_REG);
+- IWL_CMD(CSR_DBG_HPET_MEM_REG);
+- default:
+- return "UNKNOWN";
+- }
+-#undef IWL_CMD
+-}
+-
+-void iwl_pcie_dump_csr(struct iwl_trans *trans)
+-{
+- int i;
+- static const u32 csr_tbl[] = {
+- CSR_HW_IF_CONFIG_REG,
+- CSR_INT_COALESCING,
+- CSR_INT,
+- CSR_INT_MASK,
+- CSR_FH_INT_STATUS,
+- CSR_GPIO_IN,
+- CSR_RESET,
+- CSR_GP_CNTRL,
+- CSR_HW_REV,
+- CSR_EEPROM_REG,
+- CSR_EEPROM_GP,
+- CSR_OTP_GP_REG,
+- CSR_GIO_REG,
+- CSR_GP_UCODE_REG,
+- CSR_GP_DRIVER_REG,
+- CSR_UCODE_DRV_GP1,
+- CSR_UCODE_DRV_GP2,
+- CSR_LED_REG,
+- CSR_DRAM_INT_TBL_REG,
+- CSR_GIO_CHICKEN_BITS,
+- CSR_ANA_PLL_CFG,
+- CSR_MONITOR_STATUS_REG,
+- CSR_HW_REV_WA_REG,
+- CSR_DBG_HPET_MEM_REG
+- };
+- IWL_ERR(trans, "CSR values:\n");
+- IWL_ERR(trans, "(2nd byte of CSR_INT_COALESCING is "
+- "CSR_INT_PERIODIC_REG)\n");
+- for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) {
+- IWL_ERR(trans, " %25s: 0X%08x\n",
+- get_csr_string(csr_tbl[i]),
+- iwl_read32(trans, csr_tbl[i]));
+- }
+-}
+-
+-#ifdef CONFIG_IWLWIFI_DEBUGFS
+-/* create and remove of files */
+-#define DEBUGFS_ADD_FILE(name, parent, mode) do { \
+- if (!debugfs_create_file(#name, mode, parent, trans, \
+- &iwl_dbgfs_##name##_ops)) \
+- goto err; \
+-} while (0)
+-
+-/* file operation */
+-#define DEBUGFS_READ_FILE_OPS(name) \
+-static const struct file_operations iwl_dbgfs_##name##_ops = { \
+- .read = iwl_dbgfs_##name##_read, \
+- .open = simple_open, \
+- .llseek = generic_file_llseek, \
+-};
+-
+-#define DEBUGFS_WRITE_FILE_OPS(name) \
+-static const struct file_operations iwl_dbgfs_##name##_ops = { \
+- .write = iwl_dbgfs_##name##_write, \
+- .open = simple_open, \
+- .llseek = generic_file_llseek, \
+-};
+-
+-#define DEBUGFS_READ_WRITE_FILE_OPS(name) \
+-static const struct file_operations iwl_dbgfs_##name##_ops = { \
+- .write = iwl_dbgfs_##name##_write, \
+- .read = iwl_dbgfs_##name##_read, \
+- .open = simple_open, \
+- .llseek = generic_file_llseek, \
+-};
+-
+-static ssize_t iwl_dbgfs_tx_queue_read(struct file *file,
+- char __user *user_buf,
+- size_t count, loff_t *ppos)
+-{
+- struct iwl_trans *trans = file->private_data;
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- struct iwl_txq *txq;
+- struct iwl_queue *q;
+- char *buf;
+- int pos = 0;
+- int cnt;
+- int ret;
+- size_t bufsz;
+-
+- bufsz = sizeof(char) * 75 * trans->cfg->base_params->num_of_queues;
+-
+- if (!trans_pcie->txq)
+- return -EAGAIN;
+-
+- buf = kzalloc(bufsz, GFP_KERNEL);
+- if (!buf)
+- return -ENOMEM;
+-
+- for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) {
+- txq = &trans_pcie->txq[cnt];
+- q = &txq->q;
+- pos += scnprintf(buf + pos, bufsz - pos,
+- "hwq %.2d: read=%u write=%u use=%d stop=%d need_update=%d frozen=%d%s\n",
+- cnt, q->read_ptr, q->write_ptr,
+- !!test_bit(cnt, trans_pcie->queue_used),
+- !!test_bit(cnt, trans_pcie->queue_stopped),
+- txq->need_update, txq->frozen,
+- (cnt == trans_pcie->cmd_queue ? " HCMD" : ""));
+- }
+- ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+- kfree(buf);
+- return ret;
+-}
+-
+-static ssize_t iwl_dbgfs_rx_queue_read(struct file *file,
+- char __user *user_buf,
+- size_t count, loff_t *ppos)
+-{
+- struct iwl_trans *trans = file->private_data;
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- struct iwl_rxq *rxq = &trans_pcie->rxq;
+- char buf[256];
+- int pos = 0;
+- const size_t bufsz = sizeof(buf);
+-
+- pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n",
+- rxq->read);
+- pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n",
+- rxq->write);
+- pos += scnprintf(buf + pos, bufsz - pos, "write_actual: %u\n",
+- rxq->write_actual);
+- pos += scnprintf(buf + pos, bufsz - pos, "need_update: %d\n",
+- rxq->need_update);
+- pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
+- rxq->free_count);
+- if (rxq->rb_stts) {
+- pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
+- le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF);
+- } else {
+- pos += scnprintf(buf + pos, bufsz - pos,
+- "closed_rb_num: Not Allocated\n");
+- }
+- return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+-}
+-
+-static ssize_t iwl_dbgfs_interrupt_read(struct file *file,
+- char __user *user_buf,
+- size_t count, loff_t *ppos)
+-{
+- struct iwl_trans *trans = file->private_data;
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
+-
+- int pos = 0;
+- char *buf;
+- int bufsz = 24 * 64; /* 24 items * 64 char per item */
+- ssize_t ret;
+-
+- buf = kzalloc(bufsz, GFP_KERNEL);
+- if (!buf)
+- return -ENOMEM;
+-
+- pos += scnprintf(buf + pos, bufsz - pos,
+- "Interrupt Statistics Report:\n");
+-
+- pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
+- isr_stats->hw);
+- pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
+- isr_stats->sw);
+- if (isr_stats->sw || isr_stats->hw) {
+- pos += scnprintf(buf + pos, bufsz - pos,
+- "\tLast Restarting Code: 0x%X\n",
+- isr_stats->err_code);
+- }
+-#ifdef CONFIG_IWLWIFI_DEBUG
+- pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
+- isr_stats->sch);
+- pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
+- isr_stats->alive);
+-#endif
+- pos += scnprintf(buf + pos, bufsz - pos,
+- "HW RF KILL switch toggled:\t %u\n", isr_stats->rfkill);
+-
+- pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
+- isr_stats->ctkill);
+-
+- pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
+- isr_stats->wakeup);
+-
+- pos += scnprintf(buf + pos, bufsz - pos,
+- "Rx command responses:\t\t %u\n", isr_stats->rx);
+-
+- pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
+- isr_stats->tx);
+-
+- pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
+- isr_stats->unhandled);
+-
+- ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+- kfree(buf);
+- return ret;
+-}
+-
+-static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
+- const char __user *user_buf,
+- size_t count, loff_t *ppos)
+-{
+- struct iwl_trans *trans = file->private_data;
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
+-
+- char buf[8];
+- int buf_size;
+- u32 reset_flag;
+-
+- memset(buf, 0, sizeof(buf));
+- buf_size = min(count, sizeof(buf) - 1);
+- if (copy_from_user(buf, user_buf, buf_size))
+- return -EFAULT;
+- if (sscanf(buf, "%x", &reset_flag) != 1)
+- return -EFAULT;
+- if (reset_flag == 0)
+- memset(isr_stats, 0, sizeof(*isr_stats));
+-
+- return count;
+-}
+-
+-static ssize_t iwl_dbgfs_csr_write(struct file *file,
+- const char __user *user_buf,
+- size_t count, loff_t *ppos)
+-{
+- struct iwl_trans *trans = file->private_data;
+- char buf[8];
+- int buf_size;
+- int csr;
+-
+- memset(buf, 0, sizeof(buf));
+- buf_size = min(count, sizeof(buf) - 1);
+- if (copy_from_user(buf, user_buf, buf_size))
+- return -EFAULT;
+- if (sscanf(buf, "%d", &csr) != 1)
+- return -EFAULT;
+-
+- iwl_pcie_dump_csr(trans);
+-
+- return count;
+-}
+-
+-static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
+- char __user *user_buf,
+- size_t count, loff_t *ppos)
+-{
+- struct iwl_trans *trans = file->private_data;
+- char *buf = NULL;
+- ssize_t ret;
+-
+- ret = iwl_dump_fh(trans, &buf);
+- if (ret < 0)
+- return ret;
+- if (!buf)
+- return -EINVAL;
+- ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+- kfree(buf);
+- return ret;
+-}
+-
+-DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
+-DEBUGFS_READ_FILE_OPS(fh_reg);
+-DEBUGFS_READ_FILE_OPS(rx_queue);
+-DEBUGFS_READ_FILE_OPS(tx_queue);
+-DEBUGFS_WRITE_FILE_OPS(csr);
+-
+-/* Create the debugfs files and directories */
+-int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans)
+-{
+- struct dentry *dir = trans->dbgfs_dir;
+-
+- DEBUGFS_ADD_FILE(rx_queue, dir, S_IRUSR);
+- DEBUGFS_ADD_FILE(tx_queue, dir, S_IRUSR);
+- DEBUGFS_ADD_FILE(interrupt, dir, S_IWUSR | S_IRUSR);
+- DEBUGFS_ADD_FILE(csr, dir, S_IWUSR);
+- DEBUGFS_ADD_FILE(fh_reg, dir, S_IRUSR);
+- return 0;
+-
+-err:
+- IWL_ERR(trans, "failed to create the trans debugfs entry\n");
+- return -ENOMEM;
+-}
+-#endif /*CONFIG_IWLWIFI_DEBUGFS */
+-
+-static u32 iwl_trans_pcie_get_cmdlen(struct iwl_tfd *tfd)
+-{
+- u32 cmdlen = 0;
+- int i;
+-
+- for (i = 0; i < IWL_NUM_OF_TBS; i++)
+- cmdlen += iwl_pcie_tfd_tb_get_len(tfd, i);
+-
+- return cmdlen;
+-}
+-
+-static u32 iwl_trans_pcie_dump_rbs(struct iwl_trans *trans,
+- struct iwl_fw_error_dump_data **data,
+- int allocated_rb_nums)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- int max_len = PAGE_SIZE << trans_pcie->rx_page_order;
+- struct iwl_rxq *rxq = &trans_pcie->rxq;
+- u32 i, r, j, rb_len = 0;
+-
+- spin_lock(&rxq->lock);
+-
+- r = le16_to_cpu(ACCESS_ONCE(rxq->rb_stts->closed_rb_num)) & 0x0FFF;
+-
+- for (i = rxq->read, j = 0;
+- i != r && j < allocated_rb_nums;
+- i = (i + 1) & RX_QUEUE_MASK, j++) {
+- struct iwl_rx_mem_buffer *rxb = rxq->queue[i];
+- struct iwl_fw_error_dump_rb *rb;
+-
+- dma_unmap_page(trans->dev, rxb->page_dma, max_len,
+- DMA_FROM_DEVICE);
+-
+- rb_len += sizeof(**data) + sizeof(*rb) + max_len;
+-
+- (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RB);
+- (*data)->len = cpu_to_le32(sizeof(*rb) + max_len);
+- rb = (void *)(*data)->data;
+- rb->index = cpu_to_le32(i);
+- memcpy(rb->data, page_address(rxb->page), max_len);
+- /* remap the page for the free benefit */
+- rxb->page_dma = dma_map_page(trans->dev, rxb->page, 0,
+- max_len,
+- DMA_FROM_DEVICE);
+-
+- *data = iwl_fw_error_next_data(*data);
+- }
+-
+- spin_unlock(&rxq->lock);
+-
+- return rb_len;
+-}
+-#define IWL_CSR_TO_DUMP (0x250)
+-
+-static u32 iwl_trans_pcie_dump_csr(struct iwl_trans *trans,
+- struct iwl_fw_error_dump_data **data)
+-{
+- u32 csr_len = sizeof(**data) + IWL_CSR_TO_DUMP;
+- __le32 *val;
+- int i;
+-
+- (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_CSR);
+- (*data)->len = cpu_to_le32(IWL_CSR_TO_DUMP);
+- val = (void *)(*data)->data;
+-
+- for (i = 0; i < IWL_CSR_TO_DUMP; i += 4)
+- *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
+-
+- *data = iwl_fw_error_next_data(*data);
+-
+- return csr_len;
+-}
+-
+-static u32 iwl_trans_pcie_fh_regs_dump(struct iwl_trans *trans,
+- struct iwl_fw_error_dump_data **data)
+-{
+- u32 fh_regs_len = FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND;
+- unsigned long flags;
+- __le32 *val;
+- int i;
+-
+- if (!iwl_trans_grab_nic_access(trans, &flags))
+- return 0;
+-
+- (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FH_REGS);
+- (*data)->len = cpu_to_le32(fh_regs_len);
+- val = (void *)(*data)->data;
+-
+- for (i = FH_MEM_LOWER_BOUND; i < FH_MEM_UPPER_BOUND; i += sizeof(u32))
+- *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
+-
+- iwl_trans_release_nic_access(trans, &flags);
+-
+- *data = iwl_fw_error_next_data(*data);
+-
+- return sizeof(**data) + fh_regs_len;
+-}
+-
+-static u32
+-iwl_trans_pci_dump_marbh_monitor(struct iwl_trans *trans,
+- struct iwl_fw_error_dump_fw_mon *fw_mon_data,
+- u32 monitor_len)
+-{
+- u32 buf_size_in_dwords = (monitor_len >> 2);
+- u32 *buffer = (u32 *)fw_mon_data->data;
+- unsigned long flags;
+- u32 i;
+-
+- if (!iwl_trans_grab_nic_access(trans, &flags))
+- return 0;
+-
+- iwl_write_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x1);
+- for (i = 0; i < buf_size_in_dwords; i++)
+- buffer[i] = iwl_read_prph_no_grab(trans,
+- MON_DMARB_RD_DATA_ADDR);
+- iwl_write_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x0);
+-
+- iwl_trans_release_nic_access(trans, &flags);
+-
+- return monitor_len;
+-}
+-
+-static u32
+-iwl_trans_pcie_dump_monitor(struct iwl_trans *trans,
+- struct iwl_fw_error_dump_data **data,
+- u32 monitor_len)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- u32 len = 0;
+-
+- if ((trans_pcie->fw_mon_page &&
+- trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) ||
+- trans->dbg_dest_tlv) {
+- struct iwl_fw_error_dump_fw_mon *fw_mon_data;
+- u32 base, write_ptr, wrap_cnt;
+-
+- /* If there was a dest TLV - use the values from there */
+- if (trans->dbg_dest_tlv) {
+- write_ptr =
+- le32_to_cpu(trans->dbg_dest_tlv->write_ptr_reg);
+- wrap_cnt = le32_to_cpu(trans->dbg_dest_tlv->wrap_count);
+- base = le32_to_cpu(trans->dbg_dest_tlv->base_reg);
+- } else {
+- base = MON_BUFF_BASE_ADDR;
+- write_ptr = MON_BUFF_WRPTR;
+- wrap_cnt = MON_BUFF_CYCLE_CNT;
+- }
+-
+- (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FW_MONITOR);
+- fw_mon_data = (void *)(*data)->data;
+- fw_mon_data->fw_mon_wr_ptr =
+- cpu_to_le32(iwl_read_prph(trans, write_ptr));
+- fw_mon_data->fw_mon_cycle_cnt =
+- cpu_to_le32(iwl_read_prph(trans, wrap_cnt));
+- fw_mon_data->fw_mon_base_ptr =
+- cpu_to_le32(iwl_read_prph(trans, base));
+-
+- len += sizeof(**data) + sizeof(*fw_mon_data);
+- if (trans_pcie->fw_mon_page) {
+- /*
+- * The firmware is now asserted, it won't write anything
+- * to the buffer. CPU can take ownership to fetch the
+- * data. The buffer will be handed back to the device
+- * before the firmware will be restarted.
+- */
+- dma_sync_single_for_cpu(trans->dev,
+- trans_pcie->fw_mon_phys,
+- trans_pcie->fw_mon_size,
+- DMA_FROM_DEVICE);
+- memcpy(fw_mon_data->data,
+- page_address(trans_pcie->fw_mon_page),
+- trans_pcie->fw_mon_size);
+-
+- monitor_len = trans_pcie->fw_mon_size;
+- } else if (trans->dbg_dest_tlv->monitor_mode == SMEM_MODE) {
+- /*
+- * Update pointers to reflect actual values after
+- * shifting
+- */
+- base = iwl_read_prph(trans, base) <<
+- trans->dbg_dest_tlv->base_shift;
+- iwl_trans_read_mem(trans, base, fw_mon_data->data,
+- monitor_len / sizeof(u32));
+- } else if (trans->dbg_dest_tlv->monitor_mode == MARBH_MODE) {
+- monitor_len =
+- iwl_trans_pci_dump_marbh_monitor(trans,
+- fw_mon_data,
+- monitor_len);
+- } else {
+- /* Didn't match anything - output no monitor data */
+- monitor_len = 0;
+- }
+-
+- len += monitor_len;
+- (*data)->len = cpu_to_le32(monitor_len + sizeof(*fw_mon_data));
+- }
+-
+- return len;
+-}
+-
+-static struct iwl_trans_dump_data
+-*iwl_trans_pcie_dump_data(struct iwl_trans *trans,
+- const struct iwl_fw_dbg_trigger_tlv *trigger)
+-{
+- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+- struct iwl_fw_error_dump_data *data;
+- struct iwl_txq *cmdq = &trans_pcie->txq[trans_pcie->cmd_queue];
+- struct iwl_fw_error_dump_txcmd *txcmd;
+- struct iwl_trans_dump_data *dump_data;
+- u32 len, num_rbs;
+- u32 monitor_len;
+- int i, ptr;
+- bool dump_rbs = test_bit(STATUS_FW_ERROR, &trans->status);
+-
+- /* transport dump header */
+- len = sizeof(*dump_data);
+-
+- /* host commands */
+- len += sizeof(*data) +
+- cmdq->q.n_window * (sizeof(*txcmd) + TFD_MAX_PAYLOAD_SIZE);
+-
+- /* FW monitor */
+- if (trans_pcie->fw_mon_page) {
+- len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_fw_mon) +
+- trans_pcie->fw_mon_size;
+- monitor_len = trans_pcie->fw_mon_size;
+- } else if (trans->dbg_dest_tlv) {
+- u32 base, end;
+-
+- base = le32_to_cpu(trans->dbg_dest_tlv->base_reg);
+- end = le32_to_cpu(trans->dbg_dest_tlv->end_reg);
+-
+- base = iwl_read_prph(trans, base) <<
+- trans->dbg_dest_tlv->base_shift;
+- end = iwl_read_prph(trans, end) <<
+- trans->dbg_dest_tlv->end_shift;
+-
+- /* Make "end" point to the actual end */
+- if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000 ||
+- trans->dbg_dest_tlv->monitor_mode == MARBH_MODE)
+- end += (1 << trans->dbg_dest_tlv->end_shift);
+- monitor_len = end - base;
+- len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_fw_mon) +
+- monitor_len;
+- } else {
+- monitor_len = 0;
+- }
+-
+- if (trigger && (trigger->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)) {
+- dump_data = vzalloc(len);
+- if (!dump_data)
+- return NULL;
+-
+- data = (void *)dump_data->data;
+- len = iwl_trans_pcie_dump_monitor(trans, &data, monitor_len);
+- dump_data->len = len;
+-
+- return dump_data;
+- }
+-
+- /* CSR registers */
+- len += sizeof(*data) + IWL_CSR_TO_DUMP;
+-
+- /* FH registers */
+- len += sizeof(*data) + (FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND);
+-
+- if (dump_rbs) {
+- /* RBs */
+- num_rbs = le16_to_cpu(ACCESS_ONCE(
+- trans_pcie->rxq.rb_stts->closed_rb_num))
+- & 0x0FFF;
+- num_rbs = (num_rbs - trans_pcie->rxq.read) & RX_QUEUE_MASK;
+- len += num_rbs * (sizeof(*data) +
+- sizeof(struct iwl_fw_error_dump_rb) +
+- (PAGE_SIZE << trans_pcie->rx_page_order));
+- }
+-
+- dump_data = vzalloc(len);
+- if (!dump_data)
+- return NULL;
+-
+- len = 0;
+- data = (void *)dump_data->data;
+- data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXCMD);
+- txcmd = (void *)data->data;
+- spin_lock_bh(&cmdq->lock);
+- ptr = cmdq->q.write_ptr;
+- for (i = 0; i < cmdq->q.n_window; i++) {
+- u8 idx = get_cmd_index(&cmdq->q, ptr);
+- u32 caplen, cmdlen;
+-
+- cmdlen = iwl_trans_pcie_get_cmdlen(&cmdq->tfds[ptr]);
+- caplen = min_t(u32, TFD_MAX_PAYLOAD_SIZE, cmdlen);
+-
+- if (cmdlen) {
+- len += sizeof(*txcmd) + caplen;
+- txcmd->cmdlen = cpu_to_le32(cmdlen);
+- txcmd->caplen = cpu_to_le32(caplen);
+- memcpy(txcmd->data, cmdq->entries[idx].cmd, caplen);
+- txcmd = (void *)((u8 *)txcmd->data + caplen);
+- }
+-
+- ptr = iwl_queue_dec_wrap(ptr);
+- }
+- spin_unlock_bh(&cmdq->lock);
+-
+- data->len = cpu_to_le32(len);
+- len += sizeof(*data);
+- data = iwl_fw_error_next_data(data);
+-
+- len += iwl_trans_pcie_dump_csr(trans, &data);
+- len += iwl_trans_pcie_fh_regs_dump(trans, &data);
+- if (dump_rbs)
+- len += iwl_trans_pcie_dump_rbs(trans, &data, num_rbs);
+-
+- len += iwl_trans_pcie_dump_monitor(trans, &data, monitor_len);
+-
+- dump_data->len = len;
+-
+- return dump_data;
+-}
+-
+-static const struct iwl_trans_ops trans_ops_pcie = {
+- .start_hw = iwl_trans_pcie_start_hw,
+- .op_mode_leave = iwl_trans_pcie_op_mode_leave,
+- .fw_alive = iwl_trans_pcie_fw_alive,
+- .start_fw = iwl_trans_pcie_start_fw,
+- .stop_device = iwl_trans_pcie_stop_device,
+-
+- .d3_suspend = iwl_trans_pcie_d3_suspend,
+- .d3_resume = iwl_trans_pcie_d3_resume,
+-
+- .send_cmd = iwl_trans_pcie_send_hcmd,
+-
+- .tx = iwl_trans_pcie_tx,
+- .reclaim = iwl_trans_pcie_reclaim,
+-
+- .txq_disable = iwl_trans_pcie_txq_disable,
+- .txq_enable = iwl_trans_pcie_txq_enable,
+-
+- .wait_tx_queue_empty = iwl_trans_pcie_wait_txq_empty,
+- .freeze_txq_timer = iwl_trans_pcie_freeze_txq_timer,
+- .block_txq_ptrs = iwl_trans_pcie_block_txq_ptrs,
+-
+- .write8 = iwl_trans_pcie_write8,
+- .write32 = iwl_trans_pcie_write32,
+- .read32 = iwl_trans_pcie_read32,
+- .read_prph = iwl_trans_pcie_read_prph,
+- .write_prph = iwl_trans_pcie_write_prph,
+- .read_mem = iwl_trans_pcie_read_mem,
+- .write_mem = iwl_trans_pcie_write_mem,
+- .configure = iwl_trans_pcie_configure,
+- .set_pmi = iwl_trans_pcie_set_pmi,
+- .grab_nic_access = iwl_trans_pcie_grab_nic_access,
+- .release_nic_access = iwl_trans_pcie_release_nic_access,
+- .set_bits_mask = iwl_trans_pcie_set_bits_mask,
+-
+- .ref = iwl_trans_pcie_ref,
+- .unref = iwl_trans_pcie_unref,
+-
+- .dump_data = iwl_trans_pcie_dump_data,
+-};
+-
+-struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
+- const struct pci_device_id *ent,
+- const struct iwl_cfg *cfg)
+-{
+- struct iwl_trans_pcie *trans_pcie;
+- struct iwl_trans *trans;
+- u16 pci_cmd;
+- int ret;
+-
+- trans = iwl_trans_alloc(sizeof(struct iwl_trans_pcie),
+- &pdev->dev, cfg, &trans_ops_pcie, 0);
+- if (!trans)
+- return ERR_PTR(-ENOMEM);
+-
+- trans->max_skb_frags = IWL_PCIE_MAX_FRAGS;
+-
+- trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+-
+- trans_pcie->trans = trans;
+- spin_lock_init(&trans_pcie->irq_lock);
+- spin_lock_init(&trans_pcie->reg_lock);
+- spin_lock_init(&trans_pcie->ref_lock);
+- mutex_init(&trans_pcie->mutex);
+- init_waitqueue_head(&trans_pcie->ucode_write_waitq);
+- trans_pcie->tso_hdr_page = alloc_percpu(struct iwl_tso_hdr_page);
+- if (!trans_pcie->tso_hdr_page) {
+- ret = -ENOMEM;
+- goto out_no_pci;
+- }
+-
+- ret = pci_enable_device(pdev);
+- if (ret)
+- goto out_no_pci;
+-
+- if (!cfg->base_params->pcie_l1_allowed) {
+- /*
+- * W/A - seems to solve weird behavior. We need to remove this
+- * if we don't want to stay in L1 all the time. This wastes a
+- * lot of power.
+- */
+- pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
+- PCIE_LINK_STATE_L1 |
+- PCIE_LINK_STATE_CLKPM);
+- }
+-
+- pci_set_master(pdev);
+-
+- ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
+- if (!ret)
+- ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
+- if (ret) {
+- ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+- if (!ret)
+- ret = pci_set_consistent_dma_mask(pdev,
+- DMA_BIT_MASK(32));
+- /* both attempts failed: */
+- if (ret) {
+- dev_err(&pdev->dev, "No suitable DMA available\n");
+- goto out_pci_disable_device;
+- }
+- }
+-
+- ret = pci_request_regions(pdev, DRV_NAME);
+- if (ret) {
+- dev_err(&pdev->dev, "pci_request_regions failed\n");
+- goto out_pci_disable_device;
+- }
+-
+- trans_pcie->hw_base = pci_ioremap_bar(pdev, 0);
+- if (!trans_pcie->hw_base) {
+- dev_err(&pdev->dev, "pci_ioremap_bar failed\n");
+- ret = -ENODEV;
+- goto out_pci_release_regions;
+- }
+-
+- /* We disable the RETRY_TIMEOUT register (0x41) to keep
+- * PCI Tx retries from interfering with C3 CPU state */
+- pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
+-
+- trans->dev = &pdev->dev;
+- trans_pcie->pci_dev = pdev;
+- iwl_disable_interrupts(trans);
+-
+- ret = pci_enable_msi(pdev);
+- if (ret) {
+- dev_err(&pdev->dev, "pci_enable_msi failed(0X%x)\n", ret);
+- /* enable rfkill interrupt: hw bug w/a */
+- pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
+- if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
+- pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
+- pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
+- }
+- }
+-
+- trans->hw_rev = iwl_read32(trans, CSR_HW_REV);
+- /*
+- * In the 8000 HW family the format of the 4 bytes of CSR_HW_REV have
+- * changed, and now the revision step also includes bit 0-1 (no more
+- * "dash" value). To keep hw_rev backwards compatible - we'll store it
+- * in the old format.
+- */
+- if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
+- unsigned long flags;
+-
+- trans->hw_rev = (trans->hw_rev & 0xfff0) |
+- (CSR_HW_REV_STEP(trans->hw_rev << 2) << 2);
+-
+- ret = iwl_pcie_prepare_card_hw(trans);
+- if (ret) {
+- IWL_WARN(trans, "Exit HW not ready\n");
+- goto out_pci_disable_msi;
+- }
+-
+- /*
+- * in-order to recognize C step driver should read chip version
+- * id located at the AUX bus MISC address space.
+- */
+- iwl_set_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+- udelay(2);
+-
+- ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
+- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+- 25000);
+- if (ret < 0) {
+- IWL_DEBUG_INFO(trans, "Failed to wake up the nic\n");
+- goto out_pci_disable_msi;
+- }
+-
+- if (iwl_trans_grab_nic_access(trans, &flags)) {
+- u32 hw_step;
+-
+- hw_step = iwl_read_prph_no_grab(trans, WFPM_CTRL_REG);
+- hw_step |= ENABLE_WFPM;
+- iwl_write_prph_no_grab(trans, WFPM_CTRL_REG, hw_step);
+- hw_step = iwl_read_prph_no_grab(trans, AUX_MISC_REG);
+- hw_step = (hw_step >> HW_STEP_LOCATION_BITS) & 0xF;
+- if (hw_step == 0x3)
+- trans->hw_rev = (trans->hw_rev & 0xFFFFFFF3) |
+- (SILICON_C_STEP << 2);
+- iwl_trans_release_nic_access(trans, &flags);
+- }
+- }
+-
+- trans->hw_id = (pdev->device << 16) + pdev->subsystem_device;
+- snprintf(trans->hw_id_str, sizeof(trans->hw_id_str),
+- "PCI ID: 0x%04X:0x%04X", pdev->device, pdev->subsystem_device);
+-
+- /* Initialize the wait queue for commands */
+- init_waitqueue_head(&trans_pcie->wait_command_queue);
+-
+- ret = iwl_pcie_alloc_ict(trans);
+- if (ret)
+- goto out_pci_disable_msi;
+-
+- ret = request_threaded_irq(pdev->irq, iwl_pcie_isr,
+- iwl_pcie_irq_handler,
+- IRQF_SHARED, DRV_NAME, trans);
+- if (ret) {
+- IWL_ERR(trans, "Error allocating IRQ %d\n", pdev->irq);
+- goto out_free_ict;
+- }
+-
+- trans_pcie->inta_mask = CSR_INI_SET_MASK;
+-
+- return trans;
+-
+-out_free_ict:
+- iwl_pcie_free_ict(trans);
+-out_pci_disable_msi:
+- pci_disable_msi(pdev);
+-out_pci_release_regions:
+- pci_release_regions(pdev);
+-out_pci_disable_device:
+- pci_disable_device(pdev);
+-out_no_pci:
+- free_percpu(trans_pcie->tso_hdr_page);
+- iwl_trans_free(trans);
+- return ERR_PTR(ret);
+-}
+diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
+index 840c47d8e2ce..de69a9cc900d 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
++++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
+@@ -711,8 +711,8 @@ static int iwl_pcie_rsa_race_bug_wa(struct iwl_trans *trans)
+ */
+ val = iwl_read_prph(trans, PREG_AUX_BUS_WPROT_0);
+ if (val & (BIT(1) | BIT(17))) {
+- IWL_INFO(trans,
+- "can't access the RSA semaphore it is write protected\n");
++ IWL_DEBUG_INFO(trans,
++ "can't access the RSA semaphore it is write protected\n");
+ return 0;
+ }
+
+diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
+index 8de135174e82..8b978ad87cb3 100644
+--- a/drivers/regulator/s2mps11.c
++++ b/drivers/regulator/s2mps11.c
+@@ -305,7 +305,7 @@ static struct regulator_ops s2mps11_buck_ops = {
+ .enable_mask = S2MPS11_ENABLE_MASK \
+ }
+
+-#define regulator_desc_s2mps11_buck6_10(num, min, step) { \
++#define regulator_desc_s2mps11_buck67810(num, min, step) { \
+ .name = "BUCK"#num, \
+ .id = S2MPS11_BUCK##num, \
+ .ops = &s2mps11_buck_ops, \
+@@ -321,6 +321,22 @@ static struct regulator_ops s2mps11_buck_ops = {
+ .enable_mask = S2MPS11_ENABLE_MASK \
+ }
+
++#define regulator_desc_s2mps11_buck9 { \
++ .name = "BUCK9", \
++ .id = S2MPS11_BUCK9, \
++ .ops = &s2mps11_buck_ops, \
++ .type = REGULATOR_VOLTAGE, \
++ .owner = THIS_MODULE, \
++ .min_uV = MIN_3000_MV, \
++ .uV_step = STEP_25_MV, \
++ .n_voltages = S2MPS11_BUCK9_N_VOLTAGES, \
++ .ramp_delay = S2MPS11_RAMP_DELAY, \
++ .vsel_reg = S2MPS11_REG_B9CTRL2, \
++ .vsel_mask = S2MPS11_BUCK9_VSEL_MASK, \
++ .enable_reg = S2MPS11_REG_B9CTRL1, \
++ .enable_mask = S2MPS11_ENABLE_MASK \
++}
++
+ static const struct regulator_desc s2mps11_regulators[] = {
+ regulator_desc_s2mps11_ldo(1, STEP_25_MV),
+ regulator_desc_s2mps11_ldo(2, STEP_50_MV),
+@@ -365,11 +381,11 @@ static const struct regulator_desc s2mps11_regulators[] = {
+ regulator_desc_s2mps11_buck1_4(3),
+ regulator_desc_s2mps11_buck1_4(4),
+ regulator_desc_s2mps11_buck5,
+- regulator_desc_s2mps11_buck6_10(6, MIN_600_MV, STEP_6_25_MV),
+- regulator_desc_s2mps11_buck6_10(7, MIN_600_MV, STEP_6_25_MV),
+- regulator_desc_s2mps11_buck6_10(8, MIN_600_MV, STEP_6_25_MV),
+- regulator_desc_s2mps11_buck6_10(9, MIN_3000_MV, STEP_25_MV),
+- regulator_desc_s2mps11_buck6_10(10, MIN_750_MV, STEP_12_5_MV),
++ regulator_desc_s2mps11_buck67810(6, MIN_600_MV, STEP_6_25_MV),
++ regulator_desc_s2mps11_buck67810(7, MIN_600_MV, STEP_6_25_MV),
++ regulator_desc_s2mps11_buck67810(8, MIN_600_MV, STEP_6_25_MV),
++ regulator_desc_s2mps11_buck9,
++ regulator_desc_s2mps11_buck67810(10, MIN_750_MV, STEP_12_5_MV),
+ };
+
+ static struct regulator_ops s2mps14_reg_ops;
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index ae9eb716c02f..db6985f04054 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -5352,6 +5352,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
+ }
+
+ bos = udev->bos;
++ udev->bos = NULL;
+
+ for (i = 0; i < SET_CONFIG_TRIES; ++i) {
+
+@@ -5444,11 +5445,8 @@ done:
+ usb_set_usb2_hardware_lpm(udev, 1);
+ usb_unlocked_enable_lpm(udev);
+ usb_enable_ltm(udev);
+- /* release the new BOS descriptor allocated by hub_port_init() */
+- if (udev->bos != bos) {
+- usb_release_bos_descriptor(udev);
+- udev->bos = bos;
+- }
++ usb_release_bos_descriptor(udev);
++ udev->bos = bos;
+ return 0;
+
+ re_enumerate:
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index bdc0f2f24f19..a2b43a6e7fa7 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -108,6 +108,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */
+ { USB_DEVICE(0x10C4, 0x8281) }, /* Nanotec Plug & Drive */
+ { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */
++ { USB_DEVICE(0x10C4, 0x82F4) }, /* Starizona MicroTouch */
+ { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */
+ { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */
+ { USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */
+@@ -117,6 +118,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */
+ { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
+ { USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */
++ { USB_DEVICE(0x10C4, 0x84B6) }, /* Starizona Hyperion */
+ { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */
+ { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */
+ { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */
+@@ -140,6 +142,8 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */
+ { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */
+ { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */
++ { USB_DEVICE(0x12B8, 0xEC60) }, /* Link G4 ECU */
++ { USB_DEVICE(0x12B8, 0xEC62) }, /* Link G4+ ECU */
+ { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */
+ { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */
+ { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */
+diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c
+index 735d7522a3a9..204659a5f6db 100644
+--- a/fs/isofs/rock.c
++++ b/fs/isofs/rock.c
+@@ -203,6 +203,8 @@ int get_rock_ridge_filename(struct iso_directory_record *de,
+ int retnamlen = 0;
+ int truncate = 0;
+ int ret = 0;
++ char *p;
++ int len;
+
+ if (!ISOFS_SB(inode->i_sb)->s_rock)
+ return 0;
+@@ -267,12 +269,17 @@ repeat:
+ rr->u.NM.flags);
+ break;
+ }
+- if ((strlen(retname) + rr->len - 5) >= 254) {
++ len = rr->len - 5;
++ if (retnamlen + len >= 254) {
+ truncate = 1;
+ break;
+ }
+- strncat(retname, rr->u.NM.name, rr->len - 5);
+- retnamlen += rr->len - 5;
++ p = memchr(rr->u.NM.name, '\0', len);
++ if (unlikely(p))
++ len = p - rr->u.NM.name;
++ memcpy(retname + retnamlen, rr->u.NM.name, len);
++ retnamlen += len;
++ retname[retnamlen] = '\0';
+ break;
+ case SIG('R', 'E'):
+ kfree(rs.buffer);
+diff --git a/fs/namei.c b/fs/namei.c
+index f3cc848da8bc..c7a6eabc02a5 100644
+--- a/fs/namei.c
++++ b/fs/namei.c
+@@ -2839,22 +2839,10 @@ no_open:
+ dentry = lookup_real(dir, dentry, nd->flags);
+ if (IS_ERR(dentry))
+ return PTR_ERR(dentry);
+-
+- if (create_error) {
+- int open_flag = op->open_flag;
+-
+- error = create_error;
+- if ((open_flag & O_EXCL)) {
+- if (!dentry->d_inode)
+- goto out;
+- } else if (!dentry->d_inode) {
+- goto out;
+- } else if ((open_flag & O_TRUNC) &&
+- d_is_reg(dentry)) {
+- goto out;
+- }
+- /* will fail later, go on to get the right error */
+- }
++ }
++ if (create_error && !dentry->d_inode) {
++ error = create_error;
++ goto out;
+ }
+ looked_up:
+ path->dentry = dentry;
+diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
+index c58a1bcfda0f..762e5a3aecd3 100644
+--- a/fs/ocfs2/acl.c
++++ b/fs/ocfs2/acl.c
+@@ -308,3 +308,90 @@ struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type)
+
+ return acl;
+ }
++
++int ocfs2_acl_chmod(struct inode *inode, struct buffer_head *bh)
++{
++ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
++ struct posix_acl *acl;
++ int ret;
++
++ if (S_ISLNK(inode->i_mode))
++ return -EOPNOTSUPP;
++
++ if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
++ return 0;
++
++ acl = ocfs2_get_acl_nolock(inode, ACL_TYPE_ACCESS, bh);
++ if (IS_ERR(acl) || !acl)
++ return PTR_ERR(acl);
++ ret = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
++ if (ret)
++ return ret;
++ ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS,
++ acl, NULL, NULL);
++ posix_acl_release(acl);
++ return ret;
++}
++
++/*
++ * Initialize the ACLs of a new inode. If parent directory has default ACL,
++ * then clone to new inode. Called from ocfs2_mknod.
++ */
++int ocfs2_init_acl(handle_t *handle,
++ struct inode *inode,
++ struct inode *dir,
++ struct buffer_head *di_bh,
++ struct buffer_head *dir_bh,
++ struct ocfs2_alloc_context *meta_ac,
++ struct ocfs2_alloc_context *data_ac)
++{
++ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
++ struct posix_acl *acl = NULL;
++ int ret = 0, ret2;
++ umode_t mode;
++
++ if (!S_ISLNK(inode->i_mode)) {
++ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
++ acl = ocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT,
++ dir_bh);
++ if (IS_ERR(acl))
++ return PTR_ERR(acl);
++ }
++ if (!acl) {
++ mode = inode->i_mode & ~current_umask();
++ ret = ocfs2_acl_set_mode(inode, di_bh, handle, mode);
++ if (ret) {
++ mlog_errno(ret);
++ goto cleanup;
++ }
++ }
++ }
++ if ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) && acl) {
++ if (S_ISDIR(inode->i_mode)) {
++ ret = ocfs2_set_acl(handle, inode, di_bh,
++ ACL_TYPE_DEFAULT, acl,
++ meta_ac, data_ac);
++ if (ret)
++ goto cleanup;
++ }
++ mode = inode->i_mode;
++ ret = __posix_acl_create(&acl, GFP_NOFS, &mode);
++ if (ret < 0)
++ return ret;
++
++ ret2 = ocfs2_acl_set_mode(inode, di_bh, handle, mode);
++ if (ret2) {
++ mlog_errno(ret2);
++ ret = ret2;
++ goto cleanup;
++ }
++ if (ret > 0) {
++ ret = ocfs2_set_acl(handle, inode,
++ di_bh, ACL_TYPE_ACCESS,
++ acl, meta_ac, data_ac);
++ }
++ }
++cleanup:
++ posix_acl_release(acl);
++ return ret;
++}
+diff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h
+index 3fce68d08625..2783a75b3999 100644
+--- a/fs/ocfs2/acl.h
++++ b/fs/ocfs2/acl.h
+@@ -35,5 +35,10 @@ int ocfs2_set_acl(handle_t *handle,
+ struct posix_acl *acl,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac);
++extern int ocfs2_acl_chmod(struct inode *, struct buffer_head *);
++extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *,
++ struct buffer_head *, struct buffer_head *,
++ struct ocfs2_alloc_context *,
++ struct ocfs2_alloc_context *);
+
+ #endif /* OCFS2_ACL_H */
+diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
+index d8b670cbd909..3f1ee404f40f 100644
+--- a/fs/ocfs2/file.c
++++ b/fs/ocfs2/file.c
+@@ -1256,18 +1256,18 @@ bail_unlock_rw:
+ if (size_change)
+ ocfs2_rw_unlock(inode, 1);
+ bail:
+- brelse(bh);
+
+ /* Release quota pointers in case we acquired them */
+ for (qtype = 0; qtype < OCFS2_MAXQUOTAS; qtype++)
+ dqput(transfer_to[qtype]);
+
+ if (!status && attr->ia_valid & ATTR_MODE) {
+- status = posix_acl_chmod(inode, inode->i_mode);
++ status = ocfs2_acl_chmod(inode, bh);
+ if (status < 0)
+ mlog_errno(status);
+ }
+
++ brelse(bh);
+ return status;
+ }
+
+diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
+index 4d5e0a573f4f..2077dbdd4883 100644
+--- a/fs/ocfs2/namei.c
++++ b/fs/ocfs2/namei.c
+@@ -257,7 +257,6 @@ static int ocfs2_mknod(struct inode *dir,
+ struct ocfs2_dir_lookup_result lookup = { NULL, };
+ sigset_t oldset;
+ int did_block_signals = 0;
+- struct posix_acl *default_acl = NULL, *acl = NULL;
+ struct ocfs2_dentry_lock *dl = NULL;
+
+ trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name,
+@@ -360,14 +359,6 @@ static int ocfs2_mknod(struct inode *dir,
+ goto leave;
+ }
+
+- status = posix_acl_create(dir, &mode, &default_acl, &acl);
+- if (status) {
+- mlog_errno(status);
+- goto leave;
+- }
+- /* update inode->i_mode after mask with "umask". */
+- inode->i_mode = mode;
+-
+ handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
+ S_ISDIR(mode),
+ xattr_credits));
+@@ -416,16 +407,8 @@ static int ocfs2_mknod(struct inode *dir,
+ inc_nlink(dir);
+ }
+
+- if (default_acl) {
+- status = ocfs2_set_acl(handle, inode, new_fe_bh,
+- ACL_TYPE_DEFAULT, default_acl,
+- meta_ac, data_ac);
+- }
+- if (!status && acl) {
+- status = ocfs2_set_acl(handle, inode, new_fe_bh,
+- ACL_TYPE_ACCESS, acl,
+- meta_ac, data_ac);
+- }
++ status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
++ meta_ac, data_ac);
+
+ if (status < 0) {
+ mlog_errno(status);
+@@ -467,10 +450,6 @@ static int ocfs2_mknod(struct inode *dir,
+ d_instantiate(dentry, inode);
+ status = 0;
+ leave:
+- if (default_acl)
+- posix_acl_release(default_acl);
+- if (acl)
+- posix_acl_release(acl);
+ if (status < 0 && did_quota_inode)
+ dquot_free_inode(inode);
+ if (handle)
+diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
+index d8c6af101f3f..57b3aafe50c4 100644
+--- a/fs/ocfs2/refcounttree.c
++++ b/fs/ocfs2/refcounttree.c
+@@ -4266,20 +4266,12 @@ static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir,
+ struct inode *inode = d_inode(old_dentry);
+ struct buffer_head *old_bh = NULL;
+ struct inode *new_orphan_inode = NULL;
+- struct posix_acl *default_acl, *acl;
+- umode_t mode;
+
+ if (!ocfs2_refcount_tree(OCFS2_SB(inode->i_sb)))
+ return -EOPNOTSUPP;
+
+- mode = inode->i_mode;
+- error = posix_acl_create(dir, &mode, &default_acl, &acl);
+- if (error) {
+- mlog_errno(error);
+- return error;
+- }
+
+- error = ocfs2_create_inode_in_orphan(dir, mode,
++ error = ocfs2_create_inode_in_orphan(dir, inode->i_mode,
+ &new_orphan_inode);
+ if (error) {
+ mlog_errno(error);
+@@ -4318,16 +4310,11 @@ static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir,
+ /* If the security isn't preserved, we need to re-initialize them. */
+ if (!preserve) {
+ error = ocfs2_init_security_and_acl(dir, new_orphan_inode,
+- &new_dentry->d_name,
+- default_acl, acl);
++ &new_dentry->d_name);
+ if (error)
+ mlog_errno(error);
+ }
+ out:
+- if (default_acl)
+- posix_acl_release(default_acl);
+- if (acl)
+- posix_acl_release(acl);
+ if (!error) {
+ error = ocfs2_mv_orphaned_inode_to_new(dir, new_orphan_inode,
+ new_dentry);
+diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
+index d03bfbf3d27d..fdddc7a85810 100644
+--- a/fs/ocfs2/xattr.c
++++ b/fs/ocfs2/xattr.c
+@@ -7205,12 +7205,10 @@ out:
+ */
+ int ocfs2_init_security_and_acl(struct inode *dir,
+ struct inode *inode,
+- const struct qstr *qstr,
+- struct posix_acl *default_acl,
+- struct posix_acl *acl)
++ const struct qstr *qstr)
+ {
+- struct buffer_head *dir_bh = NULL;
+ int ret = 0;
++ struct buffer_head *dir_bh = NULL;
+
+ ret = ocfs2_init_security_get(inode, dir, qstr, NULL);
+ if (ret) {
+@@ -7223,11 +7221,9 @@ int ocfs2_init_security_and_acl(struct inode *dir,
+ mlog_errno(ret);
+ goto leave;
+ }
+-
+- if (!ret && default_acl)
+- ret = ocfs2_iop_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
+- if (!ret && acl)
+- ret = ocfs2_iop_set_acl(inode, acl, ACL_TYPE_ACCESS);
++ ret = ocfs2_init_acl(NULL, inode, dir, NULL, dir_bh, NULL, NULL);
++ if (ret)
++ mlog_errno(ret);
+
+ ocfs2_inode_unlock(dir, 0);
+ brelse(dir_bh);
+diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
+index f10d5b93c366..1633cc15ea1f 100644
+--- a/fs/ocfs2/xattr.h
++++ b/fs/ocfs2/xattr.h
+@@ -94,7 +94,5 @@ int ocfs2_reflink_xattrs(struct inode *old_inode,
+ bool preserve_security);
+ int ocfs2_init_security_and_acl(struct inode *dir,
+ struct inode *inode,
+- const struct qstr *qstr,
+- struct posix_acl *default_acl,
+- struct posix_acl *acl);
++ const struct qstr *qstr);
+ #endif /* OCFS2_XATTR_H */
+diff --git a/fs/pnode.c b/fs/pnode.c
+index 6367e1e435c6..99899705b105 100644
+--- a/fs/pnode.c
++++ b/fs/pnode.c
+@@ -198,10 +198,15 @@ static struct mount *next_group(struct mount *m, struct mount *origin)
+
+ /* all accesses are serialized by namespace_sem */
+ static struct user_namespace *user_ns;
+-static struct mount *last_dest, *last_source, *dest_master;
++static struct mount *last_dest, *first_source, *last_source, *dest_master;
+ static struct mountpoint *mp;
+ static struct hlist_head *list;
+
++static inline bool peers(struct mount *m1, struct mount *m2)
++{
++ return m1->mnt_group_id == m2->mnt_group_id && m1->mnt_group_id;
++}
++
+ static int propagate_one(struct mount *m)
+ {
+ struct mount *child;
+@@ -212,24 +217,26 @@ static int propagate_one(struct mount *m)
+ /* skip if mountpoint isn't covered by it */
+ if (!is_subdir(mp->m_dentry, m->mnt.mnt_root))
+ return 0;
+- if (m->mnt_group_id == last_dest->mnt_group_id) {
++ if (peers(m, last_dest)) {
+ type = CL_MAKE_SHARED;
+ } else {
+ struct mount *n, *p;
++ bool done;
+ for (n = m; ; n = p) {
+ p = n->mnt_master;
+- if (p == dest_master || IS_MNT_MARKED(p)) {
+- while (last_dest->mnt_master != p) {
+- last_source = last_source->mnt_master;
+- last_dest = last_source->mnt_parent;
+- }
+- if (n->mnt_group_id != last_dest->mnt_group_id) {
+- last_source = last_source->mnt_master;
+- last_dest = last_source->mnt_parent;
+- }
++ if (p == dest_master || IS_MNT_MARKED(p))
+ break;
+- }
+ }
++ do {
++ struct mount *parent = last_source->mnt_parent;
++ if (last_source == first_source)
++ break;
++ done = parent->mnt_master == p;
++ if (done && peers(n, parent))
++ break;
++ last_source = last_source->mnt_master;
++ } while (!done);
++
+ type = CL_SLAVE;
+ /* beginning of peer group among the slaves? */
+ if (IS_MNT_SHARED(m))
+@@ -281,6 +288,7 @@ int propagate_mnt(struct mount *dest_mnt, struct mountpoint *dest_mp,
+ */
+ user_ns = current->nsproxy->mnt_ns->user_ns;
+ last_dest = dest_mnt;
++ first_source = source_mnt;
+ last_source = source_mnt;
+ mp = dest_mp;
+ list = tree_list;
+diff --git a/include/linux/hash.h b/include/linux/hash.h
+index 1afde47e1528..79c52fa81cac 100644
+--- a/include/linux/hash.h
++++ b/include/linux/hash.h
+@@ -32,12 +32,28 @@
+ #error Wordsize not 32 or 64
+ #endif
+
++/*
++ * The above primes are actively bad for hashing, since they are
++ * too sparse. The 32-bit one is mostly ok, the 64-bit one causes
++ * real problems. Besides, the "prime" part is pointless for the
++ * multiplicative hash.
++ *
++ * Although a random odd number will do, it turns out that the golden
++ * ratio phi = (sqrt(5)-1)/2, or its negative, has particularly nice
++ * properties.
++ *
++ * These are the negative, (1 - phi) = (phi^2) = (3 - sqrt(5))/2.
++ * (See Knuth vol 3, section 6.4, exercise 9.)
++ */
++#define GOLDEN_RATIO_32 0x61C88647
++#define GOLDEN_RATIO_64 0x61C8864680B583EBull
++
+ static __always_inline u64 hash_64(u64 val, unsigned int bits)
+ {
+ u64 hash = val;
+
+-#if defined(CONFIG_ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
+- hash = hash * GOLDEN_RATIO_PRIME_64;
++#if BITS_PER_LONG == 64
++ hash = hash * GOLDEN_RATIO_64;
+ #else
+ /* Sigh, gcc can't optimise this alone like it does for 32 bits. */
+ u64 n = hash;
+diff --git a/include/linux/mfd/samsung/s2mps11.h b/include/linux/mfd/samsung/s2mps11.h
+index 7981a9d77d3f..ad81a1a7193f 100644
+--- a/include/linux/mfd/samsung/s2mps11.h
++++ b/include/linux/mfd/samsung/s2mps11.h
+@@ -173,10 +173,12 @@ enum s2mps11_regulators {
+
+ #define S2MPS11_LDO_VSEL_MASK 0x3F
+ #define S2MPS11_BUCK_VSEL_MASK 0xFF
++#define S2MPS11_BUCK9_VSEL_MASK 0x1F
+ #define S2MPS11_ENABLE_MASK (0x03 << S2MPS11_ENABLE_SHIFT)
+ #define S2MPS11_ENABLE_SHIFT 0x06
+ #define S2MPS11_LDO_N_VOLTAGES (S2MPS11_LDO_VSEL_MASK + 1)
+ #define S2MPS11_BUCK_N_VOLTAGES (S2MPS11_BUCK_VSEL_MASK + 1)
++#define S2MPS11_BUCK9_N_VOLTAGES (S2MPS11_BUCK9_VSEL_MASK + 1)
+ #define S2MPS11_RAMP_DELAY 25000 /* uV/us */
+
+
+diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
+index f34e040b34e9..41c93844fb1d 100644
+--- a/include/linux/page-flags.h
++++ b/include/linux/page-flags.h
+@@ -631,15 +631,19 @@ static inline void ClearPageSlabPfmemalloc(struct page *page)
+ 1 << PG_private | 1 << PG_private_2 | \
+ 1 << PG_writeback | 1 << PG_reserved | \
+ 1 << PG_slab | 1 << PG_swapcache | 1 << PG_active | \
+- 1 << PG_unevictable | __PG_MLOCKED | __PG_HWPOISON | \
++ 1 << PG_unevictable | __PG_MLOCKED | \
+ __PG_COMPOUND_LOCK)
+
+ /*
+ * Flags checked when a page is prepped for return by the page allocator.
+- * Pages being prepped should not have any flags set. It they are set,
++ * Pages being prepped should not have these flags set. It they are set,
+ * there has been a kernel bug or struct page corruption.
++ *
++ * __PG_HWPOISON is exceptional because it needs to be kept beyond page's
++ * alloc-free cycle to prevent from reusing the page.
+ */
+-#define PAGE_FLAGS_CHECK_AT_PREP ((1 << NR_PAGEFLAGS) - 1)
++#define PAGE_FLAGS_CHECK_AT_PREP \
++ (((1 << NR_PAGEFLAGS) - 1) & ~__PG_HWPOISON)
+
+ #define PAGE_FLAGS_PRIVATE \
+ (1 << PG_private | 1 << PG_private_2)
+diff --git a/include/rdma/ib.h b/include/rdma/ib.h
+index cf8f9e700e48..a6b93706b0fc 100644
+--- a/include/rdma/ib.h
++++ b/include/rdma/ib.h
+@@ -34,6 +34,7 @@
+ #define _RDMA_IB_H
+
+ #include <linux/types.h>
++#include <linux/sched.h>
+
+ struct ib_addr {
+ union {
+@@ -86,4 +87,19 @@ struct sockaddr_ib {
+ __u64 sib_scope_id;
+ };
+
++/*
++ * The IB interfaces that use write() as bi-directional ioctl() are
++ * fundamentally unsafe, since there are lots of ways to trigger "write()"
++ * calls from various contexts with elevated privileges. That includes the
++ * traditional suid executable error message writes, but also various kernel
++ * interfaces that can write to file descriptors.
++ *
++ * This function provides protection for the legacy API by restricting the
++ * calling context.
++ */
++static inline bool ib_safe_file_access(struct file *filp)
++{
++ return filp->f_cred == current_cred() && segment_eq(get_fs(), USER_DS);
++}
++
+ #endif /* _RDMA_IB_H */
+diff --git a/include/uapi/linux/v4l2-dv-timings.h b/include/uapi/linux/v4l2-dv-timings.h
+index c039f1d68a09..086168e18ca8 100644
+--- a/include/uapi/linux/v4l2-dv-timings.h
++++ b/include/uapi/linux/v4l2-dv-timings.h
+@@ -183,7 +183,8 @@
+
+ #define V4L2_DV_BT_CEA_3840X2160P24 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(3840, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(3840, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 297000000, 1276, 88, 296, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, \
+ V4L2_DV_FL_CAN_REDUCE_FPS | V4L2_DV_FL_IS_CE_VIDEO) \
+@@ -191,14 +192,16 @@
+
+ #define V4L2_DV_BT_CEA_3840X2160P25 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(3840, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(3840, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 297000000, 1056, 88, 296, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, V4L2_DV_FL_IS_CE_VIDEO) \
+ }
+
+ #define V4L2_DV_BT_CEA_3840X2160P30 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(3840, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(3840, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 297000000, 176, 88, 296, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, \
+ V4L2_DV_FL_CAN_REDUCE_FPS | V4L2_DV_FL_IS_CE_VIDEO) \
+@@ -206,14 +209,16 @@
+
+ #define V4L2_DV_BT_CEA_3840X2160P50 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(3840, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(3840, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 594000000, 1056, 88, 296, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, V4L2_DV_FL_IS_CE_VIDEO) \
+ }
+
+ #define V4L2_DV_BT_CEA_3840X2160P60 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(3840, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(3840, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 594000000, 176, 88, 296, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, \
+ V4L2_DV_FL_CAN_REDUCE_FPS | V4L2_DV_FL_IS_CE_VIDEO) \
+@@ -221,7 +226,8 @@
+
+ #define V4L2_DV_BT_CEA_4096X2160P24 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(4096, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(4096, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 297000000, 1020, 88, 296, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, \
+ V4L2_DV_FL_CAN_REDUCE_FPS | V4L2_DV_FL_IS_CE_VIDEO) \
+@@ -229,14 +235,16 @@
+
+ #define V4L2_DV_BT_CEA_4096X2160P25 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(4096, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(4096, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 297000000, 968, 88, 128, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, V4L2_DV_FL_IS_CE_VIDEO) \
+ }
+
+ #define V4L2_DV_BT_CEA_4096X2160P30 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(4096, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(4096, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 297000000, 88, 88, 128, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, \
+ V4L2_DV_FL_CAN_REDUCE_FPS | V4L2_DV_FL_IS_CE_VIDEO) \
+@@ -244,14 +252,16 @@
+
+ #define V4L2_DV_BT_CEA_4096X2160P50 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(4096, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(4096, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 594000000, 968, 88, 128, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, V4L2_DV_FL_IS_CE_VIDEO) \
+ }
+
+ #define V4L2_DV_BT_CEA_4096X2160P60 { \
+ .type = V4L2_DV_BT_656_1120, \
+- V4L2_INIT_BT_TIMINGS(4096, 2160, 0, V4L2_DV_HSYNC_POS_POL, \
++ V4L2_INIT_BT_TIMINGS(4096, 2160, 0, \
++ V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
+ 594000000, 88, 88, 128, 8, 10, 72, 0, 0, 0, \
+ V4L2_DV_BT_STD_CEA861, \
+ V4L2_DV_FL_CAN_REDUCE_FPS | V4L2_DV_FL_IS_CE_VIDEO) \
+diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
+index 7f63ad978cb8..dba8894d25cc 100644
+--- a/kernel/events/ring_buffer.c
++++ b/kernel/events/ring_buffer.c
+@@ -347,6 +347,7 @@ void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size,
+ bool truncated)
+ {
+ struct ring_buffer *rb = handle->rb;
++ bool wakeup = truncated;
+ unsigned long aux_head;
+ u64 flags = 0;
+
+@@ -375,9 +376,16 @@ void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size,
+ aux_head = rb->user_page->aux_head = local_read(&rb->aux_head);
+
+ if (aux_head - local_read(&rb->aux_wakeup) >= rb->aux_watermark) {
+- perf_output_wakeup(handle);
++ wakeup = true;
+ local_add(rb->aux_watermark, &rb->aux_wakeup);
+ }
++
++ if (wakeup) {
++ if (truncated)
++ handle->event->pending_disable = 1;
++ perf_output_wakeup(handle);
++ }
++
+ handle->event = NULL;
+
+ local_set(&rb->aux_nest, 0);
+diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
+index f69ec1295b0b..6459f77e2c72 100644
+--- a/kernel/trace/trace_events.c
++++ b/kernel/trace/trace_events.c
+@@ -1626,8 +1626,13 @@ event_create_dir(struct dentry *parent, struct ftrace_event_file *file)
+ trace_create_file("filter", 0644, file->dir, file,
+ &ftrace_event_filter_fops);
+
+- trace_create_file("trigger", 0644, file->dir, file,
+- &event_trigger_fops);
++ /*
++ * Only event directories that can be enabled should have
++ * triggers.
++ */
++ if (!(call->flags & TRACE_EVENT_FL_IGNORE_ENABLE))
++ trace_create_file("trigger", 0644, file->dir, file,
++ &event_trigger_fops);
+
+ trace_create_file("format", 0444, file->dir, call,
+ &ftrace_event_format_fops);
+diff --git a/kernel/workqueue.c b/kernel/workqueue.c
+index 6d631161705c..d0efe9295a0e 100644
+--- a/kernel/workqueue.c
++++ b/kernel/workqueue.c
+@@ -654,6 +654,35 @@ static void set_work_pool_and_clear_pending(struct work_struct *work,
+ */
+ smp_wmb();
+ set_work_data(work, (unsigned long)pool_id << WORK_OFFQ_POOL_SHIFT, 0);
++ /*
++ * The following mb guarantees that previous clear of a PENDING bit
++ * will not be reordered with any speculative LOADS or STORES from
++ * work->current_func, which is executed afterwards. This possible
++ * reordering can lead to a missed execution on attempt to qeueue
++ * the same @work. E.g. consider this case:
++ *
++ * CPU#0 CPU#1
++ * ---------------------------- --------------------------------
++ *
++ * 1 STORE event_indicated
++ * 2 queue_work_on() {
++ * 3 test_and_set_bit(PENDING)
++ * 4 } set_..._and_clear_pending() {
++ * 5 set_work_data() # clear bit
++ * 6 smp_mb()
++ * 7 work->current_func() {
++ * 8 LOAD event_indicated
++ * }
++ *
++ * Without an explicit full barrier speculative LOAD on line 8 can
++ * be executed before CPU#0 does STORE on line 1. If that happens,
++ * CPU#0 observes the PENDING bit is still set and new execution of
++ * a @work is not queued in a hope, that CPU#1 will eventually
++ * finish the queued @work. Meanwhile CPU#1 does not see
++ * event_indicated is set, because speculative LOAD was executed
++ * before actual STORE.
++ */
++ smp_mb();
+ }
+
+ static void clear_work_data(struct work_struct *work)
+@@ -4448,6 +4477,17 @@ static void rebind_workers(struct worker_pool *pool)
+ pool->attrs->cpumask) < 0);
+
+ spin_lock_irq(&pool->lock);
++
++ /*
++ * XXX: CPU hotplug notifiers are weird and can call DOWN_FAILED
++ * w/o preceding DOWN_PREPARE. Work around it. CPU hotplug is
++ * being reworked and this can go away in time.
++ */
++ if (!(pool->flags & POOL_DISASSOCIATED)) {
++ spin_unlock_irq(&pool->lock);
++ return;
++ }
++
+ pool->flags &= ~POOL_DISASSOCIATED;
+
+ for_each_pool_worker(worker, pool) {
+diff --git a/mm/compaction.c b/mm/compaction.c
+index 018f08da99a2..3dcf93cd622b 100644
+--- a/mm/compaction.c
++++ b/mm/compaction.c
+@@ -853,16 +853,8 @@ isolate_migratepages_range(struct compact_control *cc, unsigned long start_pfn,
+ pfn = isolate_migratepages_block(cc, pfn, block_end_pfn,
+ ISOLATE_UNEVICTABLE);
+
+- /*
+- * In case of fatal failure, release everything that might
+- * have been isolated in the previous iteration, and signal
+- * the failure back to caller.
+- */
+- if (!pfn) {
+- putback_movable_pages(&cc->migratepages);
+- cc->nr_migratepages = 0;
++ if (!pfn)
+ break;
+- }
+
+ if (cc->nr_migratepages == COMPACT_CLUSTER_MAX)
+ break;
+diff --git a/mm/huge_memory.c b/mm/huge_memory.c
+index 8e792ec5e84c..52975ebcfaa4 100644
+--- a/mm/huge_memory.c
++++ b/mm/huge_memory.c
+@@ -1676,12 +1676,7 @@ static void __split_huge_page_refcount(struct page *page,
+ /* after clearing PageTail the gup refcount can be released */
+ smp_mb__after_atomic();
+
+- /*
+- * retain hwpoison flag of the poisoned tail page:
+- * fix for the unsuitable process killed on Guest Machine(KVM)
+- * by the memory-failure.
+- */
+- page_tail->flags &= ~PAGE_FLAGS_CHECK_AT_PREP | __PG_HWPOISON;
++ page_tail->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
+ page_tail->flags |= (page->flags &
+ ((1L << PG_referenced) |
+ (1L << PG_swapbacked) |
+@@ -2066,10 +2061,9 @@ int khugepaged_enter_vma_merge(struct vm_area_struct *vma,
+ * page fault if needed.
+ */
+ return 0;
+- if (vma->vm_ops)
++ if (vma->vm_ops || (vm_flags & VM_NO_THP))
+ /* khugepaged not yet working on file or special mappings */
+ return 0;
+- VM_BUG_ON_VMA(vm_flags & VM_NO_THP, vma);
+ hstart = (vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK;
+ hend = vma->vm_end & HPAGE_PMD_MASK;
+ if (hstart < hend)
+@@ -2426,8 +2420,7 @@ static bool hugepage_vma_check(struct vm_area_struct *vma)
+ return false;
+ if (is_vma_temporary_stack(vma))
+ return false;
+- VM_BUG_ON_VMA(vma->vm_flags & VM_NO_THP, vma);
+- return true;
++ return !(vma->vm_flags & VM_NO_THP);
+ }
+
+ static void collapse_huge_page(struct mm_struct *mm,
+diff --git a/mm/memory-failure.c b/mm/memory-failure.c
+index e26bc59d7dff..7207c16f39c9 100644
+--- a/mm/memory-failure.c
++++ b/mm/memory-failure.c
+@@ -1695,20 +1695,7 @@ static int __soft_offline_page(struct page *page, int flags)
+ if (ret > 0)
+ ret = -EIO;
+ } else {
+- /*
+- * After page migration succeeds, the source page can
+- * be trapped in pagevec and actual freeing is delayed.
+- * Freeing code works differently based on PG_hwpoison,
+- * so there's a race. We need to make sure that the
+- * source page should be freed back to buddy before
+- * setting PG_hwpoison.
+- */
+- if (!is_free_buddy_page(page))
+- drain_all_pages(page_zone(page));
+ SetPageHWPoison(page);
+- if (!is_free_buddy_page(page))
+- pr_info("soft offline: %#lx: page leaked\n",
+- pfn);
+ atomic_long_inc(&num_poisoned_pages);
+ }
+ } else {
+@@ -1760,14 +1747,6 @@ int soft_offline_page(struct page *page, int flags)
+
+ get_online_mems();
+
+- /*
+- * Isolate the page, so that it doesn't get reallocated if it
+- * was free. This flag should be kept set until the source page
+- * is freed and PG_hwpoison on it is set.
+- */
+- if (get_pageblock_migratetype(page) != MIGRATE_ISOLATE)
+- set_migratetype_isolate(page, true);
+-
+ ret = get_any_page(page, pfn, flags);
+ put_online_mems();
+ if (ret > 0) { /* for in-use pages */
+@@ -1786,6 +1765,5 @@ int soft_offline_page(struct page *page, int flags)
+ atomic_long_inc(&num_poisoned_pages);
+ }
+ }
+- unset_migratetype_isolate(page, MIGRATE_MOVABLE);
+ return ret;
+ }
+diff --git a/mm/migrate.c b/mm/migrate.c
+index 8c4841a6dc4c..fe71f91c7b27 100644
+--- a/mm/migrate.c
++++ b/mm/migrate.c
+@@ -918,7 +918,8 @@ out:
+ static ICE_noinline int unmap_and_move(new_page_t get_new_page,
+ free_page_t put_new_page,
+ unsigned long private, struct page *page,
+- int force, enum migrate_mode mode)
++ int force, enum migrate_mode mode,
++ enum migrate_reason reason)
+ {
+ int rc = 0;
+ int *result = NULL;
+@@ -949,7 +950,11 @@ out:
+ list_del(&page->lru);
+ dec_zone_page_state(page, NR_ISOLATED_ANON +
+ page_is_file_cache(page));
+- putback_lru_page(page);
++ /* Soft-offlined page shouldn't go through lru cache list */
++ if (reason == MR_MEMORY_FAILURE)
++ put_page(page);
++ else
++ putback_lru_page(page);
+ }
+
+ /*
+@@ -1122,7 +1127,8 @@ int migrate_pages(struct list_head *from, new_page_t get_new_page,
+ pass > 2, mode);
+ else
+ rc = unmap_and_move(get_new_page, put_new_page,
+- private, page, pass > 2, mode);
++ private, page, pass > 2, mode,
++ reason);
+
+ switch(rc) {
+ case -ENOMEM:
+diff --git a/mm/page_alloc.c b/mm/page_alloc.c
+index 872b2ac95dec..551923097bbc 100644
+--- a/mm/page_alloc.c
++++ b/mm/page_alloc.c
+@@ -962,6 +962,10 @@ static inline int check_new_page(struct page *page)
+ bad_reason = "non-NULL mapping";
+ if (unlikely(atomic_read(&page->_count) != 0))
+ bad_reason = "nonzero _count";
++ if (unlikely(page->flags & __PG_HWPOISON)) {
++ bad_reason = "HWPoisoned (hardware-corrupted)";
++ bad_flags = __PG_HWPOISON;
++ }
+ if (unlikely(page->flags & PAGE_FLAGS_CHECK_AT_PREP)) {
+ bad_reason = "PAGE_FLAGS_CHECK_AT_PREP flag set";
+ bad_flags = PAGE_FLAGS_CHECK_AT_PREP;
+diff --git a/mm/vmscan.c b/mm/vmscan.c
+index 1a17bd7c0ce5..e1a95dbcd5f8 100644
+--- a/mm/vmscan.c
++++ b/mm/vmscan.c
+@@ -2470,7 +2470,7 @@ static bool shrink_zones(struct zonelist *zonelist, struct scan_control *sc)
+ sc->gfp_mask |= __GFP_HIGHMEM;
+
+ for_each_zone_zonelist_nodemask(zone, z, zonelist,
+- requested_highidx, sc->nodemask) {
++ gfp_zone(sc->gfp_mask), sc->nodemask) {
+ enum zone_type classzone_idx;
+
+ if (!populated_zone(zone))
+diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
+index 13fad8668f83..bc3f791845aa 100644
+--- a/net/netfilter/nf_conntrack_core.c
++++ b/net/netfilter/nf_conntrack_core.c
+@@ -1735,6 +1735,7 @@ void nf_conntrack_init_end(void)
+
+ int nf_conntrack_init_net(struct net *net)
+ {
++ static atomic64_t unique_id;
+ int ret = -ENOMEM;
+ int cpu;
+
+@@ -1758,7 +1759,8 @@ int nf_conntrack_init_net(struct net *net)
+ if (!net->ct.stat)
+ goto err_pcpu_lists;
+
+- net->ct.slabname = kasprintf(GFP_KERNEL, "nf_conntrack_%p", net);
++ net->ct.slabname = kasprintf(GFP_KERNEL, "nf_conntrack_%llu",
++ (u64)atomic64_inc_return(&unique_id));
+ if (!net->ct.slabname)
+ goto err_slabname;
+
+diff --git a/sound/pci/hda/hda_sysfs.c b/sound/pci/hda/hda_sysfs.c
+index a6e3d9b511ab..aa6121c2dd84 100644
+--- a/sound/pci/hda/hda_sysfs.c
++++ b/sound/pci/hda/hda_sysfs.c
+@@ -141,14 +141,6 @@ static int reconfig_codec(struct hda_codec *codec)
+ err = snd_hda_codec_configure(codec);
+ if (err < 0)
+ goto error;
+- /* rebuild PCMs */
+- err = snd_hda_codec_build_pcms(codec);
+- if (err < 0)
+- goto error;
+- /* rebuild mixers */
+- err = snd_hda_codec_build_controls(codec);
+- if (err < 0)
+- goto error;
+ err = snd_card_register(codec->card);
+ error:
+ snd_hda_power_down(codec);
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 86b83f521613..29595e0c3fb4 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5451,6 +5451,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x5034, "Thinkpad T450", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x5036, "Thinkpad T450s", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x503c, "Thinkpad L450", ALC292_FIXUP_TPT440_DOCK),
++ SND_PCI_QUIRK(0x17aa, 0x504a, "ThinkPad X260", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x504b, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
+ SND_PCI_QUIRK(0x17aa, 0x5109, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
+@@ -6449,6 +6450,8 @@ enum {
+ ALC668_FIXUP_AUTO_MUTE,
+ ALC668_FIXUP_DELL_DISABLE_AAMIX,
+ ALC668_FIXUP_DELL_XPS13,
++ ALC662_FIXUP_ASUS_Nx50,
++ ALC668_FIXUP_ASUS_Nx51,
+ };
+
+ static const struct hda_fixup alc662_fixups[] = {
+@@ -6689,6 +6692,21 @@ static const struct hda_fixup alc662_fixups[] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_bass_chmap,
+ },
++ [ALC662_FIXUP_ASUS_Nx50] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_auto_mute_via_amp,
++ .chained = true,
++ .chain_id = ALC662_FIXUP_BASS_1A
++ },
++ [ALC668_FIXUP_ASUS_Nx51] = {
++ .type = HDA_FIXUP_PINS,
++ .v.pins = (const struct hda_pintbl[]) {
++ {0x1a, 0x90170151}, /* bass speaker */
++ {}
++ },
++ .chained = true,
++ .chain_id = ALC662_FIXUP_BASS_CHMAP,
++ },
+ };
+
+ static const struct snd_pci_quirk alc662_fixup_tbl[] = {
+@@ -6711,10 +6729,14 @@ static const struct snd_pci_quirk alc662_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x0698, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x069f, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1632, "HP RP5800", ALC662_FIXUP_HP_RP5800),
+- SND_PCI_QUIRK(0x1043, 0x11cd, "Asus N550", ALC662_FIXUP_BASS_1A),
++ SND_PCI_QUIRK(0x1043, 0x1080, "Asus UX501VW", ALC668_FIXUP_HEADSET_MODE),
++ SND_PCI_QUIRK(0x1043, 0x11cd, "Asus N550", ALC662_FIXUP_ASUS_Nx50),
+ SND_PCI_QUIRK(0x1043, 0x13df, "Asus N550JX", ALC662_FIXUP_BASS_1A),
++ SND_PCI_QUIRK(0x1043, 0x129d, "Asus N750", ALC662_FIXUP_ASUS_Nx50),
+ SND_PCI_QUIRK(0x1043, 0x1477, "ASUS N56VZ", ALC662_FIXUP_BASS_MODE4_CHMAP),
+ SND_PCI_QUIRK(0x1043, 0x15a7, "ASUS UX51VZH", ALC662_FIXUP_BASS_16),
++ SND_PCI_QUIRK(0x1043, 0x177d, "ASUS N551", ALC668_FIXUP_ASUS_Nx51),
++ SND_PCI_QUIRK(0x1043, 0x17bd, "ASUS N751", ALC668_FIXUP_ASUS_Nx51),
+ SND_PCI_QUIRK(0x1043, 0x1b73, "ASUS N55SF", ALC662_FIXUP_BASS_16),
+ SND_PCI_QUIRK(0x1043, 0x1bf3, "ASUS N76VZ", ALC662_FIXUP_BASS_MODE4_CHMAP),
+ SND_PCI_QUIRK(0x1043, 0x8469, "ASUS mobo", ALC662_FIXUP_NO_JACK_DETECT),
+diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
+index 06317f7d945f..3630d7d090e8 100644
+--- a/sound/soc/codecs/rt5640.c
++++ b/sound/soc/codecs/rt5640.c
+@@ -361,7 +361,7 @@ static unsigned int bst_tlv[] = {
+
+ /* Interface data select */
+ static const char * const rt5640_data_select[] = {
+- "Normal", "left copy to right", "right copy to left", "Swap"};
++ "Normal", "Swap", "left copy to right", "right copy to left"};
+
+ static SOC_ENUM_SINGLE_DECL(rt5640_if1_dac_enum, RT5640_DIG_INF_DATA,
+ RT5640_IF1_DAC_SEL_SFT, rt5640_data_select);
+diff --git a/sound/soc/codecs/rt5640.h b/sound/soc/codecs/rt5640.h
+index 3deb8babeabb..243f42633989 100644
+--- a/sound/soc/codecs/rt5640.h
++++ b/sound/soc/codecs/rt5640.h
+@@ -442,39 +442,39 @@
+ #define RT5640_IF1_DAC_SEL_MASK (0x3 << 14)
+ #define RT5640_IF1_DAC_SEL_SFT 14
+ #define RT5640_IF1_DAC_SEL_NOR (0x0 << 14)
+-#define RT5640_IF1_DAC_SEL_L2R (0x1 << 14)
+-#define RT5640_IF1_DAC_SEL_R2L (0x2 << 14)
+-#define RT5640_IF1_DAC_SEL_SWAP (0x3 << 14)
++#define RT5640_IF1_DAC_SEL_SWAP (0x1 << 14)
++#define RT5640_IF1_DAC_SEL_L2R (0x2 << 14)
++#define RT5640_IF1_DAC_SEL_R2L (0x3 << 14)
+ #define RT5640_IF1_ADC_SEL_MASK (0x3 << 12)
+ #define RT5640_IF1_ADC_SEL_SFT 12
+ #define RT5640_IF1_ADC_SEL_NOR (0x0 << 12)
+-#define RT5640_IF1_ADC_SEL_L2R (0x1 << 12)
+-#define RT5640_IF1_ADC_SEL_R2L (0x2 << 12)
+-#define RT5640_IF1_ADC_SEL_SWAP (0x3 << 12)
++#define RT5640_IF1_ADC_SEL_SWAP (0x1 << 12)
++#define RT5640_IF1_ADC_SEL_L2R (0x2 << 12)
++#define RT5640_IF1_ADC_SEL_R2L (0x3 << 12)
+ #define RT5640_IF2_DAC_SEL_MASK (0x3 << 10)
+ #define RT5640_IF2_DAC_SEL_SFT 10
+ #define RT5640_IF2_DAC_SEL_NOR (0x0 << 10)
+-#define RT5640_IF2_DAC_SEL_L2R (0x1 << 10)
+-#define RT5640_IF2_DAC_SEL_R2L (0x2 << 10)
+-#define RT5640_IF2_DAC_SEL_SWAP (0x3 << 10)
++#define RT5640_IF2_DAC_SEL_SWAP (0x1 << 10)
++#define RT5640_IF2_DAC_SEL_L2R (0x2 << 10)
++#define RT5640_IF2_DAC_SEL_R2L (0x3 << 10)
+ #define RT5640_IF2_ADC_SEL_MASK (0x3 << 8)
+ #define RT5640_IF2_ADC_SEL_SFT 8
+ #define RT5640_IF2_ADC_SEL_NOR (0x0 << 8)
+-#define RT5640_IF2_ADC_SEL_L2R (0x1 << 8)
+-#define RT5640_IF2_ADC_SEL_R2L (0x2 << 8)
+-#define RT5640_IF2_ADC_SEL_SWAP (0x3 << 8)
++#define RT5640_IF2_ADC_SEL_SWAP (0x1 << 8)
++#define RT5640_IF2_ADC_SEL_L2R (0x2 << 8)
++#define RT5640_IF2_ADC_SEL_R2L (0x3 << 8)
+ #define RT5640_IF3_DAC_SEL_MASK (0x3 << 6)
+ #define RT5640_IF3_DAC_SEL_SFT 6
+ #define RT5640_IF3_DAC_SEL_NOR (0x0 << 6)
+-#define RT5640_IF3_DAC_SEL_L2R (0x1 << 6)
+-#define RT5640_IF3_DAC_SEL_R2L (0x2 << 6)
+-#define RT5640_IF3_DAC_SEL_SWAP (0x3 << 6)
++#define RT5640_IF3_DAC_SEL_SWAP (0x1 << 6)
++#define RT5640_IF3_DAC_SEL_L2R (0x2 << 6)
++#define RT5640_IF3_DAC_SEL_R2L (0x3 << 6)
+ #define RT5640_IF3_ADC_SEL_MASK (0x3 << 4)
+ #define RT5640_IF3_ADC_SEL_SFT 4
+ #define RT5640_IF3_ADC_SEL_NOR (0x0 << 4)
+-#define RT5640_IF3_ADC_SEL_L2R (0x1 << 4)
+-#define RT5640_IF3_ADC_SEL_R2L (0x2 << 4)
+-#define RT5640_IF3_ADC_SEL_SWAP (0x3 << 4)
++#define RT5640_IF3_ADC_SEL_SWAP (0x1 << 4)
++#define RT5640_IF3_ADC_SEL_L2R (0x2 << 4)
++#define RT5640_IF3_ADC_SEL_R2L (0x3 << 4)
+
+ /* REC Left Mixer Control 1 (0x3b) */
+ #define RT5640_G_HP_L_RM_L_MASK (0x7 << 13)
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 5ad43cba860c..194fa7f60a38 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1131,8 +1131,11 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ case USB_ID(0x047F, 0x0415): /* Plantronics BT-300 */
+ case USB_ID(0x047F, 0xAA05): /* Plantronics DA45 */
+ case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
++ case USB_ID(0x0556, 0x0014): /* Phoenix Audio TMX320VC */
+ case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
++ case USB_ID(0x1de7, 0x0013): /* Phoenix Audio MT202exe */
+ case USB_ID(0x1de7, 0x0014): /* Phoenix Audio TMX320 */
++ case USB_ID(0x1de7, 0x0114): /* Phoenix Audio MT202pcs */
+ case USB_ID(0x21B4, 0x0081): /* AudioQuest DragonFly */
+ return true;
+ }
+diff --git a/tools/lib/traceevent/parse-filter.c b/tools/lib/traceevent/parse-filter.c
+index 0144b3d1bb77..88cccea3ca99 100644
+--- a/tools/lib/traceevent/parse-filter.c
++++ b/tools/lib/traceevent/parse-filter.c
+@@ -1164,11 +1164,11 @@ process_filter(struct event_format *event, struct filter_arg **parg,
+ current_op = current_exp;
+
+ ret = collapse_tree(current_op, parg, error_str);
++ /* collapse_tree() may free current_op, and updates parg accordingly */
++ current_op = NULL;
+ if (ret < 0)
+ goto fail;
+
+- *parg = current_op;
+-
+ free(token);
+ return 0;
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-05-12 0:12 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-05-12 0:12 UTC (permalink / raw
To: gentoo-commits
commit: 85e809cf8d53f398f9f5cc0882736d5fb9b5a2d9
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu May 12 00:12:12 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu May 12 00:12:12 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=85e809cf
Linux patch 4.1.24
0000_README | 4 +
1023_linux-4.1.24.patch | 646 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 650 insertions(+)
diff --git a/0000_README b/0000_README
index a797069..6700cd7 100644
--- a/0000_README
+++ b/0000_README
@@ -135,6 +135,10 @@ Patch: 1022_linux-4.1.23.patch
From: http://www.kernel.org
Desc: Linux 4.1.23
+Patch: 1023_linux-4.1.24.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.24
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1023_linux-4.1.24.patch b/1023_linux-4.1.24.patch
new file mode 100644
index 0000000..0ac83c9
--- /dev/null
+++ b/1023_linux-4.1.24.patch
@@ -0,0 +1,646 @@
+diff --git a/Makefile b/Makefile
+index 9956129bb106..df1d8b1448ae 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 23
++SUBLEVEL = 24
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/powerpc/include/uapi/asm/cputable.h b/arch/powerpc/include/uapi/asm/cputable.h
+index de2c0e4ee1aa..67de80a8e178 100644
+--- a/arch/powerpc/include/uapi/asm/cputable.h
++++ b/arch/powerpc/include/uapi/asm/cputable.h
+@@ -31,6 +31,7 @@
+ #define PPC_FEATURE_PSERIES_PERFMON_COMPAT \
+ 0x00000040
+
++/* Reserved - do not use 0x00000004 */
+ #define PPC_FEATURE_TRUE_LE 0x00000002
+ #define PPC_FEATURE_PPC_LE 0x00000001
+
+diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
+index 308c5e15676b..abe9cdc390a5 100644
+--- a/arch/powerpc/kernel/prom.c
++++ b/arch/powerpc/kernel/prom.c
+@@ -149,23 +149,24 @@ static struct ibm_pa_feature {
+ unsigned long cpu_features; /* CPU_FTR_xxx bit */
+ unsigned long mmu_features; /* MMU_FTR_xxx bit */
+ unsigned int cpu_user_ftrs; /* PPC_FEATURE_xxx bit */
++ unsigned int cpu_user_ftrs2; /* PPC_FEATURE2_xxx bit */
+ unsigned char pabyte; /* byte number in ibm,pa-features */
+ unsigned char pabit; /* bit number (big-endian) */
+ unsigned char invert; /* if 1, pa bit set => clear feature */
+ } ibm_pa_features[] __initdata = {
+- {0, 0, PPC_FEATURE_HAS_MMU, 0, 0, 0},
+- {0, 0, PPC_FEATURE_HAS_FPU, 0, 1, 0},
+- {CPU_FTR_CTRL, 0, 0, 0, 3, 0},
+- {CPU_FTR_NOEXECUTE, 0, 0, 0, 6, 0},
+- {CPU_FTR_NODSISRALIGN, 0, 0, 1, 1, 1},
+- {0, MMU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0},
+- {CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0},
++ {0, 0, PPC_FEATURE_HAS_MMU, 0, 0, 0, 0},
++ {0, 0, PPC_FEATURE_HAS_FPU, 0, 0, 1, 0},
++ {CPU_FTR_CTRL, 0, 0, 0, 0, 3, 0},
++ {CPU_FTR_NOEXECUTE, 0, 0, 0, 0, 6, 0},
++ {CPU_FTR_NODSISRALIGN, 0, 0, 0, 1, 1, 1},
++ {0, MMU_FTR_CI_LARGE_PAGE, 0, 0, 1, 2, 0},
++ {CPU_FTR_REAL_LE, 0, PPC_FEATURE_TRUE_LE, 0, 5, 0, 0},
+ /*
+ * If the kernel doesn't support TM (ie. CONFIG_PPC_TRANSACTIONAL_MEM=n),
+ * we don't want to turn on CPU_FTR_TM here, so we use CPU_FTR_TM_COMP
+ * which is 0 if the kernel doesn't support TM.
+ */
+- {CPU_FTR_TM_COMP, 0, 0, 22, 0, 0},
++ {CPU_FTR_TM_COMP, 0, 0, 0, 22, 0, 0},
+ };
+
+ static void __init scan_features(unsigned long node, const unsigned char *ftrs,
+@@ -196,10 +197,12 @@ static void __init scan_features(unsigned long node, const unsigned char *ftrs,
+ if (bit ^ fp->invert) {
+ cur_cpu_spec->cpu_features |= fp->cpu_features;
+ cur_cpu_spec->cpu_user_features |= fp->cpu_user_ftrs;
++ cur_cpu_spec->cpu_user_features2 |= fp->cpu_user_ftrs2;
+ cur_cpu_spec->mmu_features |= fp->mmu_features;
+ } else {
+ cur_cpu_spec->cpu_features &= ~fp->cpu_features;
+ cur_cpu_spec->cpu_user_features &= ~fp->cpu_user_ftrs;
++ cur_cpu_spec->cpu_user_features2 &= ~fp->cpu_user_ftrs2;
+ cur_cpu_spec->mmu_features &= ~fp->mmu_features;
+ }
+ }
+diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h
+index 11eae5f55b70..9787b61e0758 100644
+--- a/arch/s390/include/asm/hugetlb.h
++++ b/arch/s390/include/asm/hugetlb.h
+@@ -14,6 +14,7 @@
+
+ #define is_hugepage_only_range(mm, addr, len) 0
+ #define hugetlb_free_pgd_range free_pgd_range
++#define hugepages_supported() (MACHINE_HAS_HPAGE)
+
+ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte);
+diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
+index 4e33fe339b3d..5b7153b34361 100644
+--- a/arch/s390/include/asm/pci.h
++++ b/arch/s390/include/asm/pci.h
+@@ -45,7 +45,8 @@ struct zpci_fmb {
+ u64 rpcit_ops;
+ u64 dma_rbytes;
+ u64 dma_wbytes;
+-} __packed __aligned(64);
++ u64 pad[2];
++} __packed __aligned(128);
+
+ enum zpci_state {
+ ZPCI_FN_STATE_RESERVED,
+diff --git a/arch/x86/crypto/sha-mb/sha1_mb.c b/arch/x86/crypto/sha-mb/sha1_mb.c
+index e510b1c5d690..e5b79c1bb191 100644
+--- a/arch/x86/crypto/sha-mb/sha1_mb.c
++++ b/arch/x86/crypto/sha-mb/sha1_mb.c
+@@ -456,10 +456,10 @@ static int sha_complete_job(struct mcryptd_hash_request_ctx *rctx,
+
+ req = cast_mcryptd_ctx_to_req(req_ctx);
+ if (irqs_disabled())
+- rctx->complete(&req->base, ret);
++ req_ctx->complete(&req->base, ret);
+ else {
+ local_bh_disable();
+- rctx->complete(&req->base, ret);
++ req_ctx->complete(&req->base, ret);
+ local_bh_enable();
+ }
+ }
+diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
+index 68c05398bba9..7aadd3cea843 100644
+--- a/arch/x86/include/asm/hugetlb.h
++++ b/arch/x86/include/asm/hugetlb.h
+@@ -4,6 +4,7 @@
+ #include <asm/page.h>
+ #include <asm-generic/hugetlb.h>
+
++#define hugepages_supported() cpu_has_pse
+
+ static inline int is_hugepage_only_range(struct mm_struct *mm,
+ unsigned long addr,
+diff --git a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
+index 0a4973b47c99..a2ca3c757712 100644
+--- a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
++++ b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
+@@ -207,6 +207,9 @@ static int ccp_aes_cmac_export(struct ahash_request *req, void *out)
+ struct ccp_aes_cmac_req_ctx *rctx = ahash_request_ctx(req);
+ struct ccp_aes_cmac_exp_ctx state;
+
++ /* Don't let anything leak to 'out' */
++ memset(&state, 0, sizeof(state));
++
+ state.null_msg = rctx->null_msg;
+ memcpy(state.iv, rctx->iv, sizeof(state.iv));
+ state.buf_count = rctx->buf_count;
+diff --git a/drivers/crypto/ccp/ccp-crypto-sha.c b/drivers/crypto/ccp/ccp-crypto-sha.c
+index 9711b6d29162..895c0d1316e5 100644
+--- a/drivers/crypto/ccp/ccp-crypto-sha.c
++++ b/drivers/crypto/ccp/ccp-crypto-sha.c
+@@ -199,6 +199,9 @@ static int ccp_sha_export(struct ahash_request *req, void *out)
+ struct ccp_sha_req_ctx *rctx = ahash_request_ctx(req);
+ struct ccp_sha_exp_ctx state;
+
++ /* Don't let anything leak to 'out' */
++ memset(&state, 0, sizeof(state));
++
+ state.type = rctx->type;
+ state.msg_bits = rctx->msg_bits;
+ state.first = rctx->first;
+diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
+index adcc628b1f93..5d87111fdc87 100644
+--- a/drivers/edac/sb_edac.c
++++ b/drivers/edac/sb_edac.c
+@@ -1316,7 +1316,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
+ }
+
+ ch_way = TAD_CH(reg) + 1;
+- sck_way = 1 << TAD_SOCK(reg);
++ sck_way = TAD_SOCK(reg);
+
+ if (ch_way == 3)
+ idx = addr >> 6;
+@@ -1355,7 +1355,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
+ switch(ch_way) {
+ case 2:
+ case 4:
+- sck_xch = 1 << sck_way * (ch_way >> 1);
++ sck_xch = (1 << sck_way) * (ch_way >> 1);
+ break;
+ default:
+ sprintf(msg, "Invalid mirror set. Can't decode addr");
+@@ -1391,7 +1391,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
+
+ ch_addr = addr - offset;
+ ch_addr >>= (6 + shiftup);
+- ch_addr /= ch_way * sck_way;
++ ch_addr /= sck_xch;
+ ch_addr <<= (6 + shiftup);
+ ch_addr |= addr & ((1 << (6 + shiftup)) - 1);
+
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 9e33705d4d0e..2c04c59022f3 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -1663,13 +1663,19 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_mst_branch *mstb;
+ int len, ret, port_num;
+
++ port = drm_dp_get_validated_port_ref(mgr, port);
++ if (!port)
++ return -EINVAL;
++
+ port_num = port->port_num;
+ mstb = drm_dp_get_validated_mstb_ref(mgr, port->parent);
+ if (!mstb) {
+ mstb = drm_dp_get_last_connected_port_and_mstb(mgr, port->parent, &port_num);
+
+- if (!mstb)
++ if (!mstb) {
++ drm_dp_put_port(port);
+ return -EINVAL;
++ }
+ }
+
+ txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
+@@ -1695,6 +1701,7 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
+ kfree(txmsg);
+ fail_put:
+ drm_dp_put_mst_branch_device(mstb);
++ drm_dp_put_port(port);
+ return ret;
+ }
+
+diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
+index a18807ec8371..71a0ebae7bfb 100644
+--- a/drivers/gpu/drm/i915/intel_uncore.c
++++ b/drivers/gpu/drm/i915/intel_uncore.c
+@@ -1074,7 +1074,11 @@ static void intel_uncore_fw_domains_init(struct drm_device *dev)
+ } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+ dev_priv->uncore.funcs.force_wake_get =
+ fw_domains_get_with_thread_status;
+- dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
++ if (IS_HASWELL(dev))
++ dev_priv->uncore.funcs.force_wake_put =
++ fw_domains_put_with_fifo;
++ else
++ dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
+ fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
+ FORCEWAKE_MT, FORCEWAKE_ACK_HSW);
+ } else if (IS_IVYBRIDGE(dev)) {
+diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+index 1523cf94bcdc..8bc7d0bbd3c8 100644
+--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
++++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+@@ -62,10 +62,6 @@ bool radeon_has_atpx(void) {
+ return radeon_atpx_priv.atpx_detected;
+ }
+
+-bool radeon_has_atpx_dgpu_power_cntl(void) {
+- return radeon_atpx_priv.atpx.functions.power_cntl;
+-}
+-
+ /**
+ * radeon_atpx_call - call an ATPX method
+ *
+@@ -145,6 +141,10 @@ static void radeon_atpx_parse_functions(struct radeon_atpx_functions *f, u32 mas
+ */
+ static int radeon_atpx_validate(struct radeon_atpx *atpx)
+ {
++ /* make sure required functions are enabled */
++ /* dGPU power control is required */
++ atpx->functions.power_cntl = true;
++
+ if (atpx->functions.px_params) {
+ union acpi_object *info;
+ struct atpx_px_params output;
+diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
+index 5a2cafb4f1bc..f5c96fb7e8d0 100644
+--- a/drivers/gpu/drm/radeon/radeon_connectors.c
++++ b/drivers/gpu/drm/radeon/radeon_connectors.c
+@@ -1977,10 +1977,12 @@ radeon_add_atom_connector(struct drm_device *dev,
+ rdev->mode_info.dither_property,
+ RADEON_FMT_DITHER_DISABLE);
+
+- if (radeon_audio != 0)
++ if (radeon_audio != 0) {
+ drm_object_attach_property(&radeon_connector->base.base,
+ rdev->mode_info.audio_property,
+ RADEON_AUDIO_AUTO);
++ radeon_connector->audio = RADEON_AUDIO_AUTO;
++ }
+ if (ASIC_IS_DCE5(rdev))
+ drm_object_attach_property(&radeon_connector->base.base,
+ rdev->mode_info.output_csc_property,
+@@ -2105,6 +2107,7 @@ radeon_add_atom_connector(struct drm_device *dev,
+ drm_object_attach_property(&radeon_connector->base.base,
+ rdev->mode_info.audio_property,
+ RADEON_AUDIO_AUTO);
++ radeon_connector->audio = RADEON_AUDIO_AUTO;
+ }
+ if (connector_type == DRM_MODE_CONNECTOR_DVII) {
+ radeon_connector->dac_load_detect = true;
+@@ -2160,6 +2163,7 @@ radeon_add_atom_connector(struct drm_device *dev,
+ drm_object_attach_property(&radeon_connector->base.base,
+ rdev->mode_info.audio_property,
+ RADEON_AUDIO_AUTO);
++ radeon_connector->audio = RADEON_AUDIO_AUTO;
+ }
+ if (ASIC_IS_DCE5(rdev))
+ drm_object_attach_property(&radeon_connector->base.base,
+@@ -2212,6 +2216,7 @@ radeon_add_atom_connector(struct drm_device *dev,
+ drm_object_attach_property(&radeon_connector->base.base,
+ rdev->mode_info.audio_property,
+ RADEON_AUDIO_AUTO);
++ radeon_connector->audio = RADEON_AUDIO_AUTO;
+ }
+ if (ASIC_IS_DCE5(rdev))
+ drm_object_attach_property(&radeon_connector->base.base,
+diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
+index 9cbdd8aac28f..604c44d88e7a 100644
+--- a/drivers/gpu/drm/radeon/radeon_device.c
++++ b/drivers/gpu/drm/radeon/radeon_device.c
+@@ -103,12 +103,6 @@ static const char radeon_family_name[][16] = {
+ "LAST",
+ };
+
+-#if defined(CONFIG_VGA_SWITCHEROO)
+-bool radeon_has_atpx_dgpu_power_cntl(void);
+-#else
+-static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; }
+-#endif
+-
+ #define RADEON_PX_QUIRK_DISABLE_PX (1 << 0)
+ #define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)
+
+@@ -1433,7 +1427,7 @@ int radeon_device_init(struct radeon_device *rdev,
+ * ignore it */
+ vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
+
+- if ((rdev->flags & RADEON_IS_PX) && radeon_has_atpx_dgpu_power_cntl())
++ if (rdev->flags & RADEON_IS_PX)
+ runtime = true;
+ vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops, runtime);
+ if (runtime)
+diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
+index f5c0590bbf73..50ce26a3b314 100644
+--- a/drivers/gpu/drm/radeon/radeon_ttm.c
++++ b/drivers/gpu/drm/radeon/radeon_ttm.c
+@@ -235,6 +235,8 @@ static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp)
+ {
+ struct radeon_bo *rbo = container_of(bo, struct radeon_bo, tbo);
+
++ if (radeon_ttm_tt_has_userptr(bo->ttm))
++ return -EPERM;
+ return drm_vma_node_verify_access(&rbo->gem_base.vma_node, filp);
+ }
+
+diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
+index 9dfcedec05a6..c4e0e69b688d 100644
+--- a/drivers/gpu/drm/radeon/si_dpm.c
++++ b/drivers/gpu/drm/radeon/si_dpm.c
+@@ -2926,6 +2926,10 @@ static struct si_dpm_quirk si_dpm_quirk_list[] = {
+ { PCI_VENDOR_ID_ATI, 0x6810, 0x1462, 0x3036, 0, 120000 },
+ { PCI_VENDOR_ID_ATI, 0x6811, 0x174b, 0xe271, 0, 120000 },
+ { PCI_VENDOR_ID_ATI, 0x6810, 0x174b, 0xe271, 85000, 90000 },
++ { PCI_VENDOR_ID_ATI, 0x6811, 0x1762, 0x2015, 0, 120000 },
++ { PCI_VENDOR_ID_ATI, 0x6811, 0x1043, 0x2015, 0, 120000 },
++ { PCI_VENDOR_ID_ATI, 0x6811, 0x148c, 0x2015, 0, 120000 },
++ { PCI_VENDOR_ID_ATI, 0x6810, 0x1682, 0x9275, 0, 120000 },
+ { 0, 0, 0, 0 },
+ };
+
+diff --git a/drivers/input/tablet/gtco.c b/drivers/input/tablet/gtco.c
+index 3a7f3a4a4396..7c18249d6c8e 100644
+--- a/drivers/input/tablet/gtco.c
++++ b/drivers/input/tablet/gtco.c
+@@ -858,6 +858,14 @@ static int gtco_probe(struct usb_interface *usbinterface,
+ goto err_free_buf;
+ }
+
++ /* Sanity check that a device has an endpoint */
++ if (usbinterface->altsetting[0].desc.bNumEndpoints < 1) {
++ dev_err(&usbinterface->dev,
++ "Invalid number of endpoints\n");
++ error = -EINVAL;
++ goto err_free_urb;
++ }
++
+ /*
+ * The endpoint is always altsetting 0, we know this since we know
+ * this device only has one interrupt endpoint
+@@ -879,7 +887,7 @@ static int gtco_probe(struct usb_interface *usbinterface,
+ * HID report descriptor
+ */
+ if (usb_get_extra_descriptor(usbinterface->cur_altsetting,
+- HID_DEVICE_TYPE, &hid_desc) != 0){
++ HID_DEVICE_TYPE, &hid_desc) != 0) {
+ dev_err(&usbinterface->dev,
+ "Can't retrieve exta USB descriptor to get hid report descriptor length\n");
+ error = -EIO;
+diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
+index 883ba74fbc1e..4cf38c39878a 100644
+--- a/drivers/misc/mei/bus.c
++++ b/drivers/misc/mei/bus.c
+@@ -238,11 +238,6 @@ static ssize_t ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,
+ dev = cl->dev;
+
+ mutex_lock(&dev->device_lock);
+- if (dev->dev_state != MEI_DEV_ENABLED) {
+- rets = -ENODEV;
+- goto out;
+- }
+-
+ if (!mei_cl_is_connected(cl)) {
+ rets = -ENODEV;
+ goto out;
+@@ -292,10 +287,6 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)
+ dev = cl->dev;
+
+ mutex_lock(&dev->device_lock);
+- if (dev->dev_state != MEI_DEV_ENABLED) {
+- rets = -ENODEV;
+- goto out;
+- }
+
+ cb = mei_cl_read_cb(cl, NULL);
+ if (cb)
+diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+index d60a467a983c..80cab4ec0522 100644
+--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
++++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+@@ -731,8 +731,8 @@ static int iwl_pcie_rsa_race_bug_wa(struct iwl_trans *trans)
+ */
+ val = iwl_read_prph(trans, PREG_AUX_BUS_WPROT_0);
+ if (val & (BIT(1) | BIT(17))) {
+- IWL_INFO(trans,
+- "can't access the RSA semaphore it is write protected\n");
++ IWL_DEBUG_INFO(trans,
++ "can't access the RSA semaphore it is write protected\n");
+ return 0;
+ }
+
+diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+index 474812e2b0cb..de08175aef0a 100644
+--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+@@ -852,7 +852,8 @@ static int mtk_gpio_set_debounce(struct gpio_chip *chip, unsigned offset,
+ struct mtk_pinctrl *pctl = dev_get_drvdata(chip->dev);
+ int eint_num, virq, eint_offset;
+ unsigned int set_offset, bit, clr_bit, clr_offset, rst, i, unmask, dbnc;
+- static const unsigned int dbnc_arr[] = {0 , 1, 16, 32, 64, 128, 256};
++ static const unsigned int debounce_time[] = {500, 1000, 16000, 32000, 64000,
++ 128000, 256000};
+ const struct mtk_desc_pin *pin;
+ struct irq_data *d;
+
+@@ -870,9 +871,9 @@ static int mtk_gpio_set_debounce(struct gpio_chip *chip, unsigned offset,
+ if (!mtk_eint_can_en_debounce(pctl, eint_num))
+ return -ENOSYS;
+
+- dbnc = ARRAY_SIZE(dbnc_arr);
+- for (i = 0; i < ARRAY_SIZE(dbnc_arr); i++) {
+- if (debounce <= dbnc_arr[i]) {
++ dbnc = ARRAY_SIZE(debounce_time);
++ for (i = 0; i < ARRAY_SIZE(debounce_time); i++) {
++ if (debounce <= debounce_time[i]) {
+ dbnc = i;
+ break;
+ }
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 6e7be91e6097..82240dbdf6dd 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -646,6 +646,7 @@ static void ffs_user_copy_worker(struct work_struct *work)
+ work);
+ int ret = io_data->req->status ? io_data->req->status :
+ io_data->req->actual;
++ bool kiocb_has_eventfd = io_data->kiocb->ki_flags & IOCB_EVENTFD;
+
+ if (io_data->read && ret > 0) {
+ use_mm(io_data->mm);
+@@ -657,13 +658,11 @@ static void ffs_user_copy_worker(struct work_struct *work)
+
+ io_data->kiocb->ki_complete(io_data->kiocb, ret, ret);
+
+- if (io_data->ffs->ffs_eventfd &&
+- !(io_data->kiocb->ki_flags & IOCB_EVENTFD))
++ if (io_data->ffs->ffs_eventfd && !kiocb_has_eventfd)
+ eventfd_signal(io_data->ffs->ffs_eventfd, 1);
+
+ usb_ep_free_request(io_data->ep, io_data->req);
+
+- io_data->kiocb->private = NULL;
+ if (io_data->read)
+ kfree(io_data->to_free);
+ kfree(io_data->buf);
+diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h
+index 461a0558bca4..cebecff536a3 100644
+--- a/include/drm/drm_cache.h
++++ b/include/drm/drm_cache.h
+@@ -39,6 +39,8 @@ static inline bool drm_arch_can_wc_memory(void)
+ {
+ #if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
+ return false;
++#elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
++ return false;
+ #else
+ return true;
+ #endif
+diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
+index 205026175c42..d891f949466a 100644
+--- a/include/linux/hugetlb.h
++++ b/include/linux/hugetlb.h
+@@ -460,15 +460,14 @@ static inline spinlock_t *huge_pte_lockptr(struct hstate *h,
+ return &mm->page_table_lock;
+ }
+
+-static inline bool hugepages_supported(void)
+-{
+- /*
+- * Some platform decide whether they support huge pages at boot
+- * time. On these, such as powerpc, HPAGE_SHIFT is set to 0 when
+- * there is no such support
+- */
+- return HPAGE_SHIFT != 0;
+-}
++#ifndef hugepages_supported
++/*
++ * Some platform decide whether they support huge pages at boot
++ * time. Some of them, such as powerpc, set HPAGE_SHIFT to 0
++ * when there is no such support
++ */
++#define hugepages_supported() (HPAGE_SHIFT != 0)
++#endif
+
+ #else /* CONFIG_HUGETLB_PAGE */
+ struct hstate {};
+diff --git a/kernel/futex.c b/kernel/futex.c
+index b75fbddacf0e..46b168e19c98 100644
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -1157,10 +1157,20 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
+ */
+ newval = FUTEX_WAITERS | task_pid_vnr(new_owner);
+
+- if (cmpxchg_futex_value_locked(&curval, uaddr, uval, newval))
++ if (cmpxchg_futex_value_locked(&curval, uaddr, uval, newval)) {
+ ret = -EFAULT;
+- else if (curval != uval)
+- ret = -EINVAL;
++ } else if (curval != uval) {
++ /*
++ * If a unconditional UNLOCK_PI operation (user space did not
++ * try the TID->0 transition) raced with a waiter setting the
++ * FUTEX_WAITERS flag between get_user() and locking the hash
++ * bucket lock, retry the operation.
++ */
++ if ((FUTEX_TID_MASK & curval) == uval)
++ ret = -EAGAIN;
++ else
++ ret = -EINVAL;
++ }
+ if (ret) {
+ raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
+ return ret;
+@@ -2419,6 +2429,15 @@ retry:
+ */
+ if (ret == -EFAULT)
+ goto pi_faulted;
++ /*
++ * A unconditional UNLOCK_PI op raced against a waiter
++ * setting the FUTEX_WAITERS bit. Try again.
++ */
++ if (ret == -EAGAIN) {
++ spin_unlock(&hb->lock);
++ put_futex_key(&key);
++ goto retry;
++ }
+ goto out_unlock;
+ }
+
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index 0d6038c87bef..0c29986ecd87 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -1290,7 +1290,7 @@ static int netlink_release(struct socket *sock)
+
+ skb_queue_purge(&sk->sk_write_queue);
+
+- if (nlk->portid) {
++ if (nlk->portid && nlk->bound) {
+ struct netlink_notify n = {
+ .net = sock_net(sk),
+ .protocol = sk->sk_protocol,
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index 04b6f3f6ee0b..f24138681b80 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -12777,7 +12777,7 @@ static int nl80211_netlink_notify(struct notifier_block * nb,
+ struct wireless_dev *wdev;
+ struct cfg80211_beacon_registration *reg, *tmp;
+
+- if (state != NETLINK_URELEASE)
++ if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
+ return NOTIFY_DONE;
+
+ rcu_read_lock();
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index 69093ce34231..9e113bc3b02d 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -307,6 +307,10 @@ enum {
+ (AZX_DCAPS_INTEL_PCH | AZX_DCAPS_SEPARATE_STREAM_TAG |\
+ AZX_DCAPS_I915_POWERWELL)
+
++#define AZX_DCAPS_INTEL_BROXTON \
++ (AZX_DCAPS_INTEL_PCH | AZX_DCAPS_SEPARATE_STREAM_TAG |\
++ AZX_DCAPS_I915_POWERWELL)
++
+ /* quirks for ATI SB / AMD Hudson */
+ #define AZX_DCAPS_PRESET_ATI_SB \
+ (AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB |\
+@@ -2039,6 +2043,12 @@ static const struct pci_device_id azx_ids[] = {
+ /* Sunrise Point-LP */
+ { PCI_DEVICE(0x8086, 0x9d70),
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
++ /* Broxton-P(Apollolake) */
++ { PCI_DEVICE(0x8086, 0x5a98),
++ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },
++ /* Broxton-T */
++ { PCI_DEVICE(0x8086, 0x1a98),
++ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },
+ /* Haswell */
+ { PCI_DEVICE(0x8086, 0x0a0c),
+ .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index cc1a7a4a7cbd..86b83f521613 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5318,6 +5318,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x064a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x064b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x0665, "Dell XPS 13", ALC288_FIXUP_DELL_XPS_13),
++ SND_PCI_QUIRK(0x1028, 0x0669, "Dell Optiplex 9020m", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x069a, "Dell Vostro 5480", ALC290_FIXUP_SUBWOOFER_HSJACK),
+ SND_PCI_QUIRK(0x1028, 0x06c7, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+diff --git a/sound/pci/pcxhr/pcxhr_core.c b/sound/pci/pcxhr/pcxhr_core.c
+index c5194f5b150a..d7e71f309299 100644
+--- a/sound/pci/pcxhr/pcxhr_core.c
++++ b/sound/pci/pcxhr/pcxhr_core.c
+@@ -1341,5 +1341,6 @@ irqreturn_t pcxhr_threaded_irq(int irq, void *dev_id)
+ }
+
+ pcxhr_msg_thread(mgr);
++ mutex_unlock(&mgr->lock);
+ return IRQ_HANDLED;
+ }
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-04-28 18:56 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-04-28 18:56 UTC (permalink / raw
To: gentoo-commits
commit: 26c5b0bcb48671f84a02d4f62590131aa4566f9b
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Apr 28 18:56:12 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Apr 28 18:56:12 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=26c5b0bc
Linux patch 4.1.23
0000_README | 4 +
1022_linux-4.1.23.patch | 2721 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2725 insertions(+)
diff --git a/0000_README b/0000_README
index 3075177..a797069 100644
--- a/0000_README
+++ b/0000_README
@@ -131,6 +131,10 @@ Patch: 1021_linux-4.1.22.patch
From: http://www.kernel.org
Desc: Linux 4.1.22
+Patch: 1022_linux-4.1.23.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.23
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1022_linux-4.1.23.patch b/1022_linux-4.1.23.patch
new file mode 100644
index 0000000..68a28a4
--- /dev/null
+++ b/1022_linux-4.1.23.patch
@@ -0,0 +1,2721 @@
+diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
+index cd03a0faca8f..7bcd7a26f885 100644
+--- a/Documentation/kernel-parameters.txt
++++ b/Documentation/kernel-parameters.txt
+@@ -3808,6 +3808,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
+ sector if the number is odd);
+ i = IGNORE_DEVICE (don't bind to this
+ device);
++ j = NO_REPORT_LUNS (don't use report luns
++ command, uas only);
+ l = NOT_LOCKABLE (don't try to lock and
+ unlock ejectable media);
+ m = MAX_SECTORS_64 (don't transfer more
+diff --git a/Makefile b/Makefile
+index 7f4a4039fdd9..9956129bb106 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 22
++SUBLEVEL = 23
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
+index 9185bb958503..dee6831c0434 100644
+--- a/arch/arm/mach-omap2/omap_hwmod.c
++++ b/arch/arm/mach-omap2/omap_hwmod.c
+@@ -1402,9 +1402,7 @@ static void _enable_sysc(struct omap_hwmod *oh)
+ (sf & SYSC_HAS_CLOCKACTIVITY))
+ _set_clockactivity(oh, oh->class->sysc->clockact, &v);
+
+- /* If the cached value is the same as the new value, skip the write */
+- if (oh->_sysc_cache != v)
+- _write_sysconfig(v, oh);
++ _write_sysconfig(v, oh);
+
+ /*
+ * Set the autoidle bit only after setting the smartidle bit
+@@ -1467,7 +1465,9 @@ static void _idle_sysc(struct omap_hwmod *oh)
+ _set_master_standbymode(oh, idlemode, &v);
+ }
+
+- _write_sysconfig(v, oh);
++ /* If the cached value is the same as the new value, skip the write */
++ if (oh->_sysc_cache != v)
++ _write_sysconfig(v, oh);
+ }
+
+ /**
+diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
+index 0abdd4c607ed..1960b87c1c8b 100644
+--- a/arch/parisc/include/asm/uaccess.h
++++ b/arch/parisc/include/asm/uaccess.h
+@@ -76,6 +76,7 @@ struct exception_table_entry {
+ */
+ struct exception_data {
+ unsigned long fault_ip;
++ unsigned long fault_gp;
+ unsigned long fault_space;
+ unsigned long fault_addr;
+ };
+diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c
+index 59001cea13f9..c972e6550f56 100644
+--- a/arch/parisc/kernel/asm-offsets.c
++++ b/arch/parisc/kernel/asm-offsets.c
+@@ -291,6 +291,7 @@ int main(void)
+ DEFINE(ASM_PT_INITIAL, PT_INITIAL);
+ BLANK();
+ DEFINE(EXCDATA_IP, offsetof(struct exception_data, fault_ip));
++ DEFINE(EXCDATA_GP, offsetof(struct exception_data, fault_gp));
+ DEFINE(EXCDATA_SPACE, offsetof(struct exception_data, fault_space));
+ DEFINE(EXCDATA_ADDR, offsetof(struct exception_data, fault_addr));
+ BLANK();
+diff --git a/arch/parisc/kernel/parisc_ksyms.c b/arch/parisc/kernel/parisc_ksyms.c
+index 568b2c61ea02..3cad8aadc69e 100644
+--- a/arch/parisc/kernel/parisc_ksyms.c
++++ b/arch/parisc/kernel/parisc_ksyms.c
+@@ -47,11 +47,11 @@ EXPORT_SYMBOL(__cmpxchg_u64);
+ EXPORT_SYMBOL(lclear_user);
+ EXPORT_SYMBOL(lstrnlen_user);
+
+-/* Global fixups */
+-extern void fixup_get_user_skip_1(void);
+-extern void fixup_get_user_skip_2(void);
+-extern void fixup_put_user_skip_1(void);
+-extern void fixup_put_user_skip_2(void);
++/* Global fixups - defined as int to avoid creation of function pointers */
++extern int fixup_get_user_skip_1;
++extern int fixup_get_user_skip_2;
++extern int fixup_put_user_skip_1;
++extern int fixup_put_user_skip_2;
+ EXPORT_SYMBOL(fixup_get_user_skip_1);
+ EXPORT_SYMBOL(fixup_get_user_skip_2);
+ EXPORT_SYMBOL(fixup_put_user_skip_1);
+diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
+index 7f67c4c96a7a..bbf22658d1a3 100644
+--- a/arch/parisc/kernel/traps.c
++++ b/arch/parisc/kernel/traps.c
+@@ -798,6 +798,9 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
+
+ if (fault_space == 0 && !in_atomic())
+ {
++ /* Clean up and return if in exception table. */
++ if (fixup_exception(regs))
++ return;
+ pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
+ parisc_terminate("Kernel Fault", regs, code, fault_address);
+ }
+diff --git a/arch/parisc/lib/fixup.S b/arch/parisc/lib/fixup.S
+index 536ef66bb94b..1052b747e011 100644
+--- a/arch/parisc/lib/fixup.S
++++ b/arch/parisc/lib/fixup.S
+@@ -26,6 +26,7 @@
+
+ #ifdef CONFIG_SMP
+ .macro get_fault_ip t1 t2
++ loadgp
+ addil LT%__per_cpu_offset,%r27
+ LDREG RT%__per_cpu_offset(%r1),\t1
+ /* t2 = smp_processor_id() */
+@@ -40,14 +41,19 @@
+ LDREG RT%exception_data(%r1),\t1
+ /* t1 = this_cpu_ptr(&exception_data) */
+ add,l \t1,\t2,\t1
++ /* %r27 = t1->fault_gp - restore gp */
++ LDREG EXCDATA_GP(\t1), %r27
+ /* t1 = t1->fault_ip */
+ LDREG EXCDATA_IP(\t1), \t1
+ .endm
+ #else
+ .macro get_fault_ip t1 t2
++ loadgp
+ /* t1 = this_cpu_ptr(&exception_data) */
+ addil LT%exception_data,%r27
+ LDREG RT%exception_data(%r1),\t2
++ /* %r27 = t2->fault_gp - restore gp */
++ LDREG EXCDATA_GP(\t2), %r27
+ /* t1 = t2->fault_ip */
+ LDREG EXCDATA_IP(\t2), \t1
+ .endm
+diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
+index e5120e653240..50d64a7fc672 100644
+--- a/arch/parisc/mm/fault.c
++++ b/arch/parisc/mm/fault.c
+@@ -151,6 +151,7 @@ int fixup_exception(struct pt_regs *regs)
+ struct exception_data *d;
+ d = this_cpu_ptr(&exception_data);
+ d->fault_ip = regs->iaoq[0];
++ d->fault_gp = regs->gr[27];
+ d->fault_space = regs->isr;
+ d->fault_addr = regs->ior;
+
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index c228d8da1f8c..75eb9603ed29 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -680,7 +680,6 @@ static int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
+ if ((xcr0 & XSTATE_AVX512) != XSTATE_AVX512)
+ return 1;
+ }
+- kvm_put_guest_xcr0(vcpu);
+ vcpu->arch.xcr0 = xcr0;
+
+ if ((xcr0 ^ old_xcr0) & XSTATE_EXTEND_MASK)
+@@ -6115,12 +6114,10 @@ static int inject_pending_event(struct kvm_vcpu *vcpu, bool req_int_win)
+ }
+
+ /* try to inject new event if pending */
+- if (vcpu->arch.nmi_pending) {
+- if (kvm_x86_ops->nmi_allowed(vcpu)) {
+- --vcpu->arch.nmi_pending;
+- vcpu->arch.nmi_injected = true;
+- kvm_x86_ops->set_nmi(vcpu);
+- }
++ if (vcpu->arch.nmi_pending && kvm_x86_ops->nmi_allowed(vcpu)) {
++ --vcpu->arch.nmi_pending;
++ vcpu->arch.nmi_injected = true;
++ kvm_x86_ops->set_nmi(vcpu);
+ } else if (kvm_cpu_has_injectable_intr(vcpu)) {
+ /*
+ * Because interrupts can be injected asynchronously, we are
+@@ -6290,10 +6287,12 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
+ if (inject_pending_event(vcpu, req_int_win) != 0)
+ req_immediate_exit = true;
+ /* enable NMI/IRQ window open exits if needed */
+- else if (vcpu->arch.nmi_pending)
+- kvm_x86_ops->enable_nmi_window(vcpu);
+- else if (kvm_cpu_has_injectable_intr(vcpu) || req_int_win)
+- kvm_x86_ops->enable_irq_window(vcpu);
++ else {
++ if (vcpu->arch.nmi_pending)
++ kvm_x86_ops->enable_nmi_window(vcpu);
++ if (kvm_cpu_has_injectable_intr(vcpu) || req_int_win)
++ kvm_x86_ops->enable_irq_window(vcpu);
++ }
+
+ if (kvm_lapic_enabled(vcpu)) {
+ /*
+@@ -6318,8 +6317,6 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
+ kvm_x86_ops->prepare_guest_switch(vcpu);
+ if (vcpu->fpu_active)
+ kvm_load_guest_fpu(vcpu);
+- kvm_load_guest_xcr0(vcpu);
+-
+ vcpu->mode = IN_GUEST_MODE;
+
+ srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
+@@ -6342,6 +6339,8 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
+ goto cancel_injection;
+ }
+
++ kvm_load_guest_xcr0(vcpu);
++
+ if (req_immediate_exit)
+ smp_send_reschedule(vcpu->cpu);
+
+@@ -6392,6 +6391,8 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
+ vcpu->mode = OUTSIDE_GUEST_MODE;
+ smp_wmb();
+
++ kvm_put_guest_xcr0(vcpu);
++
+ /* Interrupt is enabled by handle_external_intr() */
+ kvm_x86_ops->handle_external_intr(vcpu);
+
+@@ -7040,7 +7041,6 @@ void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
+ * and assume host would use all available bits.
+ * Guest xcr0 would be loaded later.
+ */
+- kvm_put_guest_xcr0(vcpu);
+ vcpu->guest_fpu_loaded = 1;
+ __kernel_fpu_begin();
+ fpu_restore_checking(&vcpu->arch.guest_fpu);
+@@ -7049,8 +7049,6 @@ void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
+
+ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
+ {
+- kvm_put_guest_xcr0(vcpu);
+-
+ if (!vcpu->guest_fpu_loaded)
+ return;
+
+diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
+index 09138ceba046..89ecec13c567 100644
+--- a/drivers/block/rbd.c
++++ b/drivers/block/rbd.c
+@@ -1934,7 +1934,7 @@ static struct ceph_osd_request *rbd_osd_req_create(
+
+ osdc = &rbd_dev->rbd_client->client->osdc;
+ osd_req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false,
+- GFP_ATOMIC);
++ GFP_NOIO);
+ if (!osd_req)
+ return NULL; /* ENOMEM */
+
+@@ -1983,7 +1983,7 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request)
+ rbd_dev = img_request->rbd_dev;
+ osdc = &rbd_dev->rbd_client->client->osdc;
+ osd_req = ceph_osdc_alloc_request(osdc, snapc, num_osd_ops,
+- false, GFP_ATOMIC);
++ false, GFP_NOIO);
+ if (!osd_req)
+ return NULL; /* ENOMEM */
+
+@@ -2482,7 +2482,7 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
+ bio_chain_clone_range(&bio_list,
+ &bio_offset,
+ clone_size,
+- GFP_ATOMIC);
++ GFP_NOIO);
+ if (!obj_request->bio_list)
+ goto out_unwind;
+ } else if (type == OBJ_REQUEST_PAGES) {
+diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
+index ebffc744cb1b..5ec92ce0e5ac 100644
+--- a/drivers/dma/dw/core.c
++++ b/drivers/dma/dw/core.c
+@@ -130,26 +130,14 @@ static void dwc_desc_put(struct dw_dma_chan *dwc, struct dw_desc *desc)
+ static void dwc_initialize(struct dw_dma_chan *dwc)
+ {
+ struct dw_dma *dw = to_dw_dma(dwc->chan.device);
+- struct dw_dma_slave *dws = dwc->chan.private;
+ u32 cfghi = DWC_CFGH_FIFO_MODE;
+ u32 cfglo = DWC_CFGL_CH_PRIOR(dwc->priority);
+
+ if (dwc->initialized == true)
+ return;
+
+- if (dws) {
+- /*
+- * We need controller-specific data to set up slave
+- * transfers.
+- */
+- BUG_ON(!dws->dma_dev || dws->dma_dev != dw->dma.dev);
+-
+- cfghi |= DWC_CFGH_DST_PER(dws->dst_id);
+- cfghi |= DWC_CFGH_SRC_PER(dws->src_id);
+- } else {
+- cfghi |= DWC_CFGH_DST_PER(dwc->dst_id);
+- cfghi |= DWC_CFGH_SRC_PER(dwc->src_id);
+- }
++ cfghi |= DWC_CFGH_DST_PER(dwc->dst_id);
++ cfghi |= DWC_CFGH_SRC_PER(dwc->src_id);
+
+ channel_writel(dwc, CFG_LO, cfglo);
+ channel_writel(dwc, CFG_HI, cfghi);
+@@ -936,7 +924,7 @@ bool dw_dma_filter(struct dma_chan *chan, void *param)
+ struct dw_dma_chan *dwc = to_dw_dma_chan(chan);
+ struct dw_dma_slave *dws = param;
+
+- if (!dws || dws->dma_dev != chan->device->dev)
++ if (dws->dma_dev != chan->device->dev)
+ return false;
+
+ /* We have to copy data since dws can be temporary storage */
+@@ -1160,6 +1148,14 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan)
+ * doesn't mean what you think it means), and status writeback.
+ */
+
++ /*
++ * We need controller-specific data to set up slave transfers.
++ */
++ if (chan->private && !dw_dma_filter(chan, chan->private)) {
++ dev_warn(chan2dev(chan), "Wrong controller-specific data\n");
++ return -EINVAL;
++ }
++
+ /* Enable controller here if needed */
+ if (!dw->in_use)
+ dw_dma_on(dw);
+@@ -1221,6 +1217,14 @@ static void dwc_free_chan_resources(struct dma_chan *chan)
+ spin_lock_irqsave(&dwc->lock, flags);
+ list_splice_init(&dwc->free_list, &list);
+ dwc->descs_allocated = 0;
++
++ /* Clear custom channel configuration */
++ dwc->src_id = 0;
++ dwc->dst_id = 0;
++
++ dwc->src_master = 0;
++ dwc->dst_master = 0;
++
+ dwc->initialized = false;
+
+ /* Disable interrupts */
+diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c
+index f42f71e37e73..b863b685d2d5 100644
+--- a/drivers/dma/hsu/hsu.c
++++ b/drivers/dma/hsu/hsu.c
+@@ -143,7 +143,7 @@ static u32 hsu_dma_chan_get_sr(struct hsu_dma_chan *hsuc)
+ sr = hsu_chan_readl(hsuc, HSU_CH_SR);
+ spin_unlock_irqrestore(&hsuc->lock, flags);
+
+- return sr;
++ return sr & ~(HSU_CH_SR_DESCE_ANY | HSU_CH_SR_CDESC_ANY);
+ }
+
+ irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr)
+diff --git a/drivers/dma/hsu/hsu.h b/drivers/dma/hsu/hsu.h
+index 0275233cf550..6a54f351df90 100644
+--- a/drivers/dma/hsu/hsu.h
++++ b/drivers/dma/hsu/hsu.h
+@@ -41,6 +41,9 @@
+ #define HSU_CH_SR_DESCTO(x) BIT(8 + (x))
+ #define HSU_CH_SR_DESCTO_ANY (BIT(11) | BIT(10) | BIT(9) | BIT(8))
+ #define HSU_CH_SR_CHE BIT(15)
++#define HSU_CH_SR_DESCE(x) BIT(16 + (x))
++#define HSU_CH_SR_DESCE_ANY (BIT(19) | BIT(18) | BIT(17) | BIT(16))
++#define HSU_CH_SR_CDESC_ANY (BIT(31) | BIT(30))
+
+ /* Bits in HSU_CH_CR */
+ #define HSU_CH_CR_CHA BIT(0)
+diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
+index e2da64abbccd..16f7c4f2d8c8 100644
+--- a/drivers/gpio/gpio-pca953x.c
++++ b/drivers/gpio/gpio-pca953x.c
+@@ -21,6 +21,7 @@
+ #ifdef CONFIG_OF_GPIO
+ #include <linux/of_platform.h>
+ #endif
++#include <asm/unaligned.h>
+
+ #define PCA953X_INPUT 0
+ #define PCA953X_OUTPUT 1
+@@ -154,7 +155,7 @@ static int pca953x_write_regs(struct pca953x_chip *chip, int reg, u8 *val)
+ switch (chip->chip_type) {
+ case PCA953X_TYPE:
+ ret = i2c_smbus_write_word_data(chip->client,
+- reg << 1, (u16) *val);
++ reg << 1, cpu_to_le16(get_unaligned((u16 *)val)));
+ break;
+ case PCA957X_TYPE:
+ ret = i2c_smbus_write_byte_data(chip->client, reg << 1,
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index b103773df2a3..56323732c748 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -5609,10 +5609,6 @@ static void intel_connector_check_state(struct intel_connector *connector)
+ connector->base.base.id,
+ connector->base.name);
+
+- /* there is no real hw state for MST connectors */
+- if (connector->mst_port)
+- return;
+-
+ I915_STATE_WARN(connector->base.dpms == DRM_MODE_DPMS_OFF,
+ "wrong connector dpms state\n");
+ I915_STATE_WARN(connector->base.encoder != &encoder->base,
+@@ -11225,13 +11221,6 @@ check_encoder_state(struct drm_device *dev)
+ if (connector->base.dpms != DRM_MODE_DPMS_OFF)
+ active = true;
+ }
+- /*
+- * for MST connectors if we unplug the connector is gone
+- * away but the encoder is still connected to a crtc
+- * until a modeset happens in response to the hotplug.
+- */
+- if (!enabled && encoder->base.encoder_type == DRM_MODE_ENCODER_DPMST)
+- continue;
+
+ I915_STATE_WARN(!!encoder->base.crtc != enabled,
+ "encoder's enabled state mismatch "
+diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
+index 88c557551b89..8266a8d8b9df 100644
+--- a/drivers/gpu/drm/i915/intel_dp_mst.c
++++ b/drivers/gpu/drm/i915/intel_dp_mst.c
+@@ -451,14 +451,23 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
+ {
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+ struct drm_device *dev = connector->dev;
+- /* need to nuke the connector */
+- drm_modeset_lock_all(dev);
+- intel_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+- drm_modeset_unlock_all(dev);
+
+ intel_connector->unregister(intel_connector);
+
++ /* need to nuke the connector */
+ drm_modeset_lock_all(dev);
++ if (connector->state->crtc) {
++ struct drm_mode_set set;
++ int ret;
++
++ memset(&set, 0, sizeof(set));
++ set.crtc = connector->state->crtc,
++
++ ret = drm_atomic_helper_set_config(&set);
++
++ WARN(ret, "Disabling mst crtc failed with %i\n", ret);
++ }
++
+ intel_connector_remove_from_fbdev(intel_connector);
+ drm_connector_cleanup(connector);
+ drm_modeset_unlock_all(dev);
+diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
+index 52921a871230..18484301fc3e 100644
+--- a/drivers/gpu/drm/qxl/qxl_display.c
++++ b/drivers/gpu/drm/qxl/qxl_display.c
+@@ -367,10 +367,15 @@ static int qxl_crtc_cursor_set2(struct drm_crtc *crtc,
+
+ qxl_bo_kunmap(user_bo);
+
++ qcrtc->cur_x += qcrtc->hot_spot_x - hot_x;
++ qcrtc->cur_y += qcrtc->hot_spot_y - hot_y;
++ qcrtc->hot_spot_x = hot_x;
++ qcrtc->hot_spot_y = hot_y;
++
+ cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
+ cmd->type = QXL_CURSOR_SET;
+- cmd->u.set.position.x = qcrtc->cur_x;
+- cmd->u.set.position.y = qcrtc->cur_y;
++ cmd->u.set.position.x = qcrtc->cur_x + qcrtc->hot_spot_x;
++ cmd->u.set.position.y = qcrtc->cur_y + qcrtc->hot_spot_y;
+
+ cmd->u.set.shape = qxl_bo_physical_address(qdev, cursor_bo, 0);
+
+@@ -433,8 +438,8 @@ static int qxl_crtc_cursor_move(struct drm_crtc *crtc,
+
+ cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
+ cmd->type = QXL_CURSOR_MOVE;
+- cmd->u.position.x = qcrtc->cur_x;
+- cmd->u.position.y = qcrtc->cur_y;
++ cmd->u.position.x = qcrtc->cur_x + qcrtc->hot_spot_x;
++ cmd->u.position.y = qcrtc->cur_y + qcrtc->hot_spot_y;
+ qxl_release_unmap(qdev, release, &cmd->release_info);
+
+ qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
+diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
+index e66143cc1a7a..eef66769245f 100644
+--- a/drivers/gpu/drm/qxl/qxl_drv.h
++++ b/drivers/gpu/drm/qxl/qxl_drv.h
+@@ -135,6 +135,8 @@ struct qxl_crtc {
+ int index;
+ int cur_x;
+ int cur_y;
++ int hot_spot_x;
++ int hot_spot_y;
+ };
+
+ struct qxl_output {
+diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
+index 1764a168888c..49a259fc610e 100644
+--- a/drivers/hid/usbhid/hid-core.c
++++ b/drivers/hid/usbhid/hid-core.c
+@@ -950,14 +950,6 @@ static int usbhid_output_report(struct hid_device *hid, __u8 *buf, size_t count)
+ return ret;
+ }
+
+-static void usbhid_restart_queues(struct usbhid_device *usbhid)
+-{
+- if (usbhid->urbout && !test_bit(HID_OUT_RUNNING, &usbhid->iofl))
+- usbhid_restart_out_queue(usbhid);
+- if (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl))
+- usbhid_restart_ctrl_queue(usbhid);
+-}
+-
+ static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
+ {
+ struct usbhid_device *usbhid = hid->driver_data;
+@@ -1403,6 +1395,37 @@ static void hid_cease_io(struct usbhid_device *usbhid)
+ usb_kill_urb(usbhid->urbout);
+ }
+
++static void hid_restart_io(struct hid_device *hid)
++{
++ struct usbhid_device *usbhid = hid->driver_data;
++ int clear_halt = test_bit(HID_CLEAR_HALT, &usbhid->iofl);
++ int reset_pending = test_bit(HID_RESET_PENDING, &usbhid->iofl);
++
++ spin_lock_irq(&usbhid->lock);
++ clear_bit(HID_SUSPENDED, &usbhid->iofl);
++ usbhid_mark_busy(usbhid);
++
++ if (clear_halt || reset_pending)
++ schedule_work(&usbhid->reset_work);
++ usbhid->retry_delay = 0;
++ spin_unlock_irq(&usbhid->lock);
++
++ if (reset_pending || !test_bit(HID_STARTED, &usbhid->iofl))
++ return;
++
++ if (!clear_halt) {
++ if (hid_start_in(hid) < 0)
++ hid_io_error(hid);
++ }
++
++ spin_lock_irq(&usbhid->lock);
++ if (usbhid->urbout && !test_bit(HID_OUT_RUNNING, &usbhid->iofl))
++ usbhid_restart_out_queue(usbhid);
++ if (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl))
++ usbhid_restart_ctrl_queue(usbhid);
++ spin_unlock_irq(&usbhid->lock);
++}
++
+ /* Treat USB reset pretty much the same as suspend/resume */
+ static int hid_pre_reset(struct usb_interface *intf)
+ {
+@@ -1452,14 +1475,14 @@ static int hid_post_reset(struct usb_interface *intf)
+ return 1;
+ }
+
++ /* No need to do another reset or clear a halted endpoint */
+ spin_lock_irq(&usbhid->lock);
+ clear_bit(HID_RESET_PENDING, &usbhid->iofl);
++ clear_bit(HID_CLEAR_HALT, &usbhid->iofl);
+ spin_unlock_irq(&usbhid->lock);
+ hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
+- status = hid_start_in(hid);
+- if (status < 0)
+- hid_io_error(hid);
+- usbhid_restart_queues(usbhid);
++
++ hid_restart_io(hid);
+
+ return 0;
+ }
+@@ -1482,25 +1505,9 @@ void usbhid_put_power(struct hid_device *hid)
+ #ifdef CONFIG_PM
+ static int hid_resume_common(struct hid_device *hid, bool driver_suspended)
+ {
+- struct usbhid_device *usbhid = hid->driver_data;
+- int status;
+-
+- spin_lock_irq(&usbhid->lock);
+- clear_bit(HID_SUSPENDED, &usbhid->iofl);
+- usbhid_mark_busy(usbhid);
+-
+- if (test_bit(HID_CLEAR_HALT, &usbhid->iofl) ||
+- test_bit(HID_RESET_PENDING, &usbhid->iofl))
+- schedule_work(&usbhid->reset_work);
+- usbhid->retry_delay = 0;
+-
+- usbhid_restart_queues(usbhid);
+- spin_unlock_irq(&usbhid->lock);
+-
+- status = hid_start_in(hid);
+- if (status < 0)
+- hid_io_error(hid);
++ int status = 0;
+
++ hid_restart_io(hid);
+ if (driver_suspended && hid->driver && hid->driver->resume)
+ status = hid->driver->resume(hid);
+ return status;
+@@ -1569,12 +1576,8 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message)
+ static int hid_resume(struct usb_interface *intf)
+ {
+ struct hid_device *hid = usb_get_intfdata (intf);
+- struct usbhid_device *usbhid = hid->driver_data;
+ int status;
+
+- if (!test_bit(HID_STARTED, &usbhid->iofl))
+- return 0;
+-
+ status = hid_resume_common(hid, true);
+ dev_dbg(&intf->dev, "resume status %d\n", status);
+ return 0;
+@@ -1583,10 +1586,8 @@ static int hid_resume(struct usb_interface *intf)
+ static int hid_reset_resume(struct usb_interface *intf)
+ {
+ struct hid_device *hid = usb_get_intfdata(intf);
+- struct usbhid_device *usbhid = hid->driver_data;
+ int status;
+
+- clear_bit(HID_SUSPENDED, &usbhid->iofl);
+ status = hid_post_reset(intf);
+ if (status >= 0 && hid->driver && hid->driver->reset_resume) {
+ int ret = hid->driver->reset_resume(hid);
+diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
+index 082ae6ba492f..1741c33674c3 100644
+--- a/drivers/media/usb/au0828/au0828-core.c
++++ b/drivers/media/usb/au0828/au0828-core.c
+@@ -159,7 +159,7 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
+ Set the status so poll routines can check and avoid
+ access after disconnect.
+ */
+- dev->dev_state = DEV_DISCONNECTED;
++ set_bit(DEV_DISCONNECTED, &dev->dev_state);
+
+ au0828_rc_unregister(dev);
+ /* Digital TV */
+diff --git a/drivers/media/usb/au0828/au0828-input.c b/drivers/media/usb/au0828/au0828-input.c
+index b0f067971979..3d6687f0407d 100644
+--- a/drivers/media/usb/au0828/au0828-input.c
++++ b/drivers/media/usb/au0828/au0828-input.c
+@@ -130,7 +130,7 @@ static int au0828_get_key_au8522(struct au0828_rc *ir)
+ bool first = true;
+
+ /* do nothing if device is disconnected */
+- if (ir->dev->dev_state == DEV_DISCONNECTED)
++ if (test_bit(DEV_DISCONNECTED, &ir->dev->dev_state))
+ return 0;
+
+ /* Check IR int */
+@@ -260,7 +260,7 @@ static void au0828_rc_stop(struct rc_dev *rc)
+ cancel_delayed_work_sync(&ir->work);
+
+ /* do nothing if device is disconnected */
+- if (ir->dev->dev_state != DEV_DISCONNECTED) {
++ if (!test_bit(DEV_DISCONNECTED, &ir->dev->dev_state)) {
+ /* Disable IR */
+ au8522_rc_clear(ir, 0xe0, 1 << 4);
+ }
+diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c
+index 1a362a041ab3..0605c0f35059 100644
+--- a/drivers/media/usb/au0828/au0828-video.c
++++ b/drivers/media/usb/au0828/au0828-video.c
+@@ -104,14 +104,13 @@ static inline void print_err_status(struct au0828_dev *dev,
+
+ static int check_dev(struct au0828_dev *dev)
+ {
+- if (dev->dev_state & DEV_DISCONNECTED) {
++ if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
+ pr_info("v4l2 ioctl: device not present\n");
+ return -ENODEV;
+ }
+
+- if (dev->dev_state & DEV_MISCONFIGURED) {
+- pr_info("v4l2 ioctl: device is misconfigured; "
+- "close and open it again\n");
++ if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
++ pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
+ return -EIO;
+ }
+ return 0;
+@@ -519,8 +518,8 @@ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
+ if (!dev)
+ return 0;
+
+- if ((dev->dev_state & DEV_DISCONNECTED) ||
+- (dev->dev_state & DEV_MISCONFIGURED))
++ if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
++ test_bit(DEV_MISCONFIGURED, &dev->dev_state))
+ return 0;
+
+ if (urb->status < 0) {
+@@ -761,10 +760,10 @@ static int au0828_stream_interrupt(struct au0828_dev *dev)
+ int ret = 0;
+
+ dev->stream_state = STREAM_INTERRUPT;
+- if (dev->dev_state == DEV_DISCONNECTED)
++ if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
+ return -ENODEV;
+ else if (ret) {
+- dev->dev_state = DEV_MISCONFIGURED;
++ set_bit(DEV_MISCONFIGURED, &dev->dev_state);
+ dprintk(1, "%s device is misconfigured!\n", __func__);
+ return ret;
+ }
+@@ -952,7 +951,7 @@ static int au0828_v4l2_open(struct file *filp)
+ int ret;
+
+ dprintk(1,
+- "%s called std_set %d dev_state %d stream users %d users %d\n",
++ "%s called std_set %d dev_state %ld stream users %d users %d\n",
+ __func__, dev->std_set_in_tuner_core, dev->dev_state,
+ dev->streaming_users, dev->users);
+
+@@ -971,7 +970,7 @@ static int au0828_v4l2_open(struct file *filp)
+ au0828_analog_stream_enable(dev);
+ au0828_analog_stream_reset(dev);
+ dev->stream_state = STREAM_OFF;
+- dev->dev_state |= DEV_INITIALIZED;
++ set_bit(DEV_INITIALIZED, &dev->dev_state);
+ }
+ dev->users++;
+ mutex_unlock(&dev->lock);
+@@ -985,7 +984,7 @@ static int au0828_v4l2_close(struct file *filp)
+ struct video_device *vdev = video_devdata(filp);
+
+ dprintk(1,
+- "%s called std_set %d dev_state %d stream users %d users %d\n",
++ "%s called std_set %d dev_state %ld stream users %d users %d\n",
+ __func__, dev->std_set_in_tuner_core, dev->dev_state,
+ dev->streaming_users, dev->users);
+
+@@ -1001,7 +1000,7 @@ static int au0828_v4l2_close(struct file *filp)
+ del_timer_sync(&dev->vbi_timeout);
+ }
+
+- if (dev->dev_state == DEV_DISCONNECTED)
++ if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
+ goto end;
+
+ if (dev->users == 1) {
+@@ -1030,7 +1029,7 @@ static void au0828_init_tuner(struct au0828_dev *dev)
+ .type = V4L2_TUNER_ANALOG_TV,
+ };
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ if (dev->std_set_in_tuner_core)
+@@ -1102,7 +1101,7 @@ static int vidioc_querycap(struct file *file, void *priv,
+ struct video_device *vdev = video_devdata(file);
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ strlcpy(cap->driver, "au0828", sizeof(cap->driver));
+@@ -1145,7 +1144,7 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ f->fmt.pix.width = dev->width;
+@@ -1164,7 +1163,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
+@@ -1176,7 +1175,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct au0828_dev *dev = video_drvdata(file);
+ int rc;
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ rc = check_dev(dev);
+@@ -1198,7 +1197,7 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ if (norm == dev->std)
+@@ -1230,7 +1229,7 @@ static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ *norm = dev->std;
+@@ -1253,7 +1252,7 @@ static int vidioc_enum_input(struct file *file, void *priv,
+ [AU0828_VMUX_DEBUG] = "tv debug"
+ };
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ tmp = input->index;
+@@ -1283,7 +1282,7 @@ static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ *i = dev->ctrl_input;
+@@ -1294,7 +1293,7 @@ static void au0828_s_input(struct au0828_dev *dev, int index)
+ {
+ int i;
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ switch (AUVI_INPUT(index).type) {
+@@ -1379,7 +1378,7 @@ static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ a->index = dev->ctrl_ainput;
+@@ -1399,7 +1398,7 @@ static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio
+ if (a->index != dev->ctrl_ainput)
+ return -EINVAL;
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+ return 0;
+ }
+@@ -1411,7 +1410,7 @@ static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
+ if (t->index != 0)
+ return -EINVAL;
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ strcpy(t->name, "Auvitek tuner");
+@@ -1431,7 +1430,7 @@ static int vidioc_s_tuner(struct file *file, void *priv,
+ if (t->index != 0)
+ return -EINVAL;
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ au0828_init_tuner(dev);
+@@ -1453,7 +1452,7 @@ static int vidioc_g_frequency(struct file *file, void *priv,
+
+ if (freq->tuner != 0)
+ return -EINVAL;
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+ freq->frequency = dev->ctrl_freq;
+ return 0;
+@@ -1468,7 +1467,7 @@ static int vidioc_s_frequency(struct file *file, void *priv,
+ if (freq->tuner != 0)
+ return -EINVAL;
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ au0828_init_tuner(dev);
+@@ -1494,7 +1493,7 @@ static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ format->fmt.vbi.samples_per_line = dev->vbi_width;
+@@ -1520,7 +1519,7 @@ static int vidioc_cropcap(struct file *file, void *priv,
+ if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ cc->bounds.left = 0;
+@@ -1542,7 +1541,7 @@ static int vidioc_g_register(struct file *file, void *priv,
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ reg->val = au0828_read(dev, reg->reg);
+@@ -1555,7 +1554,7 @@ static int vidioc_s_register(struct file *file, void *priv,
+ {
+ struct au0828_dev *dev = video_drvdata(file);
+
+- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
++ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
+ dev->std_set_in_tuner_core, dev->dev_state);
+
+ return au0828_writereg(dev, reg->reg, reg->val);
+diff --git a/drivers/media/usb/au0828/au0828.h b/drivers/media/usb/au0828/au0828.h
+index 3b480005ce3b..42a5379c6aa3 100644
+--- a/drivers/media/usb/au0828/au0828.h
++++ b/drivers/media/usb/au0828/au0828.h
+@@ -21,6 +21,7 @@
+
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
++#include <linux/bitops.h>
+ #include <linux/usb.h>
+ #include <linux/i2c.h>
+ #include <linux/i2c-algo-bit.h>
+@@ -121,9 +122,9 @@ enum au0828_stream_state {
+
+ /* device state */
+ enum au0828_dev_state {
+- DEV_INITIALIZED = 0x01,
+- DEV_DISCONNECTED = 0x02,
+- DEV_MISCONFIGURED = 0x04
++ DEV_INITIALIZED = 0,
++ DEV_DISCONNECTED = 1,
++ DEV_MISCONFIGURED = 2
+ };
+
+ struct au0828_dev;
+@@ -247,7 +248,7 @@ struct au0828_dev {
+ int input_type;
+ int std_set_in_tuner_core;
+ unsigned int ctrl_input;
+- enum au0828_dev_state dev_state;
++ long unsigned int dev_state; /* defined at enum au0828_dev_state */;
+ enum au0828_stream_state stream_state;
+ wait_queue_head_t open;
+
+diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
+index c66fd23b3c13..1a82a8552182 100644
+--- a/drivers/scsi/sd.c
++++ b/drivers/scsi/sd.c
+@@ -1260,18 +1260,19 @@ static int sd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+ struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk);
+ struct scsi_device *sdp = sdkp->device;
+ struct Scsi_Host *host = sdp->host;
++ sector_t capacity = logical_to_sectors(sdp, sdkp->capacity);
+ int diskinfo[4];
+
+ /* default to most commonly used values */
+- diskinfo[0] = 0x40; /* 1 << 6 */
+- diskinfo[1] = 0x20; /* 1 << 5 */
+- diskinfo[2] = sdkp->capacity >> 11;
+-
++ diskinfo[0] = 0x40; /* 1 << 6 */
++ diskinfo[1] = 0x20; /* 1 << 5 */
++ diskinfo[2] = capacity >> 11;
++
+ /* override with calculated, extended default, or driver values */
+ if (host->hostt->bios_param)
+- host->hostt->bios_param(sdp, bdev, sdkp->capacity, diskinfo);
++ host->hostt->bios_param(sdp, bdev, capacity, diskinfo);
+ else
+- scsicam_bios_param(bdev, sdkp->capacity, diskinfo);
++ scsicam_bios_param(bdev, capacity, diskinfo);
+
+ geo->heads = diskinfo[0];
+ geo->sectors = diskinfo[1];
+@@ -2230,14 +2231,6 @@ got_data:
+ } else
+ sdkp->max_xfer_blocks = SD_DEF_XFER_BLOCKS;
+
+- /* Rescale capacity to 512-byte units */
+- if (sector_size == 4096)
+- sdkp->capacity <<= 3;
+- else if (sector_size == 2048)
+- sdkp->capacity <<= 2;
+- else if (sector_size == 1024)
+- sdkp->capacity <<= 1;
+-
+ blk_queue_physical_block_size(sdp->request_queue,
+ sdkp->physical_block_size);
+ sdkp->device->sector_size = sector_size;
+@@ -2773,7 +2766,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
+ sdkp->disk->queue->limits.max_sectors =
+ min_not_zero(queue_max_hw_sectors(sdkp->disk->queue), max_xfer);
+
+- set_capacity(disk, sdkp->capacity);
++ set_capacity(disk, logical_to_sectors(sdp, sdkp->capacity));
+ sd_config_write_same(sdkp);
+ kfree(buffer);
+
+diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h
+index 63ba5ca7f9a1..0264936a855a 100644
+--- a/drivers/scsi/sd.h
++++ b/drivers/scsi/sd.h
+@@ -65,7 +65,7 @@ struct scsi_disk {
+ struct device dev;
+ struct gendisk *disk;
+ atomic_t openers;
+- sector_t capacity; /* size in 512-byte sectors */
++ sector_t capacity; /* size in logical blocks */
+ u32 max_xfer_blocks;
+ u32 max_ws_blocks;
+ u32 max_unmap_blocks;
+@@ -145,6 +145,11 @@ static inline int scsi_medium_access_command(struct scsi_cmnd *scmd)
+ return 0;
+ }
+
++static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks)
++{
++ return blocks << (ilog2(sdev->sector_size) - 9);
++}
++
+ /*
+ * A DIF-capable target device can be formatted with different
+ * protection schemes. Currently 0 through 3 are defined:
+diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
+index 09f1e5f2f013..a61386ce41ee 100644
+--- a/drivers/thermal/thermal_core.c
++++ b/drivers/thermal/thermal_core.c
+@@ -1491,7 +1491,7 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
+ {
+ struct thermal_zone_device *tz;
+ enum thermal_trip_type trip_type;
+- int trip_temp;
++ unsigned long trip_temp;
+ int result;
+ int count;
+ int passive = 0;
+diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
+index 9eb1cff28bd4..b8b580e5ae6e 100644
+--- a/drivers/usb/core/hcd-pci.c
++++ b/drivers/usb/core/hcd-pci.c
+@@ -74,6 +74,15 @@ static void for_each_companion(struct pci_dev *pdev, struct usb_hcd *hcd,
+ if (companion->bus != pdev->bus ||
+ PCI_SLOT(companion->devfn) != slot)
+ continue;
++
++ /*
++ * Companion device should be either UHCI,OHCI or EHCI host
++ * controller, otherwise skip.
++ */
++ if (companion->class != CL_UHCI && companion->class != CL_OHCI &&
++ companion->class != CL_EHCI)
++ continue;
++
+ companion_hcd = pci_get_drvdata(companion);
+ if (!companion_hcd || !companion_hcd->self.root_hub)
+ continue;
+diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
+index 41f841fa6c4d..5ab70afd5624 100644
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -1879,6 +1879,12 @@ no_bw:
+ kfree(xhci->rh_bw);
+ kfree(xhci->ext_caps);
+
++ xhci->usb2_ports = NULL;
++ xhci->usb3_ports = NULL;
++ xhci->port_array = NULL;
++ xhci->rh_bw = NULL;
++ xhci->ext_caps = NULL;
++
+ xhci->page_size = 0;
+ xhci->page_shift = 0;
+ xhci->bus_state[0].bus_suspended = 0;
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index 3ff5fcc7c94b..c6027acb6263 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -48,6 +48,7 @@
+ #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI 0xa12f
+ #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI 0x9d2f
+ #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8
++#define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI 0x1aa8
+
+ static const char hcd_name[] = "xhci_hcd";
+
+@@ -149,7 +150,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ (pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
+- pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI)) {
++ pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI ||
++ pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI)) {
+ xhci->quirks |= XHCI_PME_STUCK_QUIRK;
+ }
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+@@ -296,6 +298,7 @@ static void xhci_pci_remove(struct pci_dev *dev)
+ struct xhci_hcd *xhci;
+
+ xhci = hcd_to_xhci(pci_get_drvdata(dev));
++ xhci->xhc_state |= XHCI_STATE_REMOVING;
+ if (xhci->shared_hcd) {
+ usb_remove_hcd(xhci->shared_hcd);
+ usb_put_hcd(xhci->shared_hcd);
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index e6d858a49d04..6fe0377ec5cf 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -3823,8 +3823,12 @@ static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
+ {
+ int reserved_trbs = xhci->cmd_ring_reserved_trbs;
+ int ret;
+- if (xhci->xhc_state & XHCI_STATE_DYING)
++
++ if ((xhci->xhc_state & XHCI_STATE_DYING) ||
++ (xhci->xhc_state & XHCI_STATE_HALTED)) {
++ xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n");
+ return -ESHUTDOWN;
++ }
+
+ if (!command_must_succeed)
+ reserved_trbs++;
+diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
+index 910f7fac031f..896b928f7412 100644
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -146,7 +146,8 @@ static int xhci_start(struct xhci_hcd *xhci)
+ "waited %u microseconds.\n",
+ XHCI_MAX_HALT_USEC);
+ if (!ret)
+- xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING);
++ /* clear state flags. Including dying, halted or removing */
++ xhci->xhc_state = 0;
+
+ return ret;
+ }
+@@ -1113,8 +1114,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
+ /* Resume root hubs only when have pending events. */
+ status = readl(&xhci->op_regs->status);
+ if (status & STS_EINT) {
+- usb_hcd_resume_root_hub(hcd);
+ usb_hcd_resume_root_hub(xhci->shared_hcd);
++ usb_hcd_resume_root_hub(hcd);
+ }
+ }
+
+@@ -1129,10 +1130,10 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
+
+ /* Re-enable port polling. */
+ xhci_dbg(xhci, "%s: starting port polling.\n", __func__);
+- set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
+- usb_hcd_poll_rh_status(hcd);
+ set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags);
+ usb_hcd_poll_rh_status(xhci->shared_hcd);
++ set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
++ usb_hcd_poll_rh_status(hcd);
+
+ return retval;
+ }
+@@ -2763,7 +2764,8 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
+ if (ret <= 0)
+ return ret;
+ xhci = hcd_to_xhci(hcd);
+- if (xhci->xhc_state & XHCI_STATE_DYING)
++ if ((xhci->xhc_state & XHCI_STATE_DYING) ||
++ (xhci->xhc_state & XHCI_STATE_REMOVING))
+ return -ENODEV;
+
+ xhci_dbg(xhci, "%s called for udev %p\n", __func__, udev);
+@@ -3812,7 +3814,7 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
+
+ mutex_lock(&xhci->mutex);
+
+- if (xhci->xhc_state) /* dying or halted */
++ if (xhci->xhc_state) /* dying, removing or halted */
+ goto out;
+
+ if (!udev->slot_id) {
+@@ -4939,6 +4941,16 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
+ goto error;
+ xhci_dbg(xhci, "Reset complete\n");
+
++ /*
++ * On some xHCI controllers (e.g. R-Car SoCs), the AC64 bit (bit 0)
++ * of HCCPARAMS1 is set to 1. However, the xHCs don't support 64-bit
++ * address memory pointers actually. So, this driver clears the AC64
++ * bit of xhci->hcc_params to call dma_set_coherent_mask(dev,
++ * DMA_BIT_MASK(32)) in this xhci_gen_setup().
++ */
++ if (xhci->quirks & XHCI_NO_64BIT_SUPPORT)
++ xhci->hcc_params &= ~BIT(0);
++
+ /* Set dma_mask and coherent_dma_mask to 64-bits,
+ * if xHC supports 64-bit addressing */
+ if (HCC_64BIT_ADDR(xhci->hcc_params) &&
+diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
+index f18cdf0ec795..c5d6963e9cbe 100644
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1536,6 +1536,7 @@ struct xhci_hcd {
+ */
+ #define XHCI_STATE_DYING (1 << 0)
+ #define XHCI_STATE_HALTED (1 << 1)
++#define XHCI_STATE_REMOVING (1 << 2)
+ /* Statistics */
+ int error_bitmask;
+ unsigned int quirks;
+@@ -1571,6 +1572,7 @@ struct xhci_hcd {
+ #define XHCI_BROKEN_STREAMS (1 << 19)
+ #define XHCI_PME_STUCK_QUIRK (1 << 20)
+ #define XHCI_SSIC_PORT_UNUSED (1 << 22)
++#define XHCI_NO_64BIT_SUPPORT (1 << 23)
+ unsigned int num_active_eps;
+ unsigned int limit_active_eps;
+ /* There are two roothubs to keep track of bus suspend info for */
+diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
+index c0f5c652d272..f1893e08e51a 100644
+--- a/drivers/usb/renesas_usbhs/fifo.c
++++ b/drivers/usb/renesas_usbhs/fifo.c
+@@ -190,7 +190,8 @@ static int usbhsf_pkt_handler(struct usbhs_pipe *pipe, int type)
+ goto __usbhs_pkt_handler_end;
+ }
+
+- ret = func(pkt, &is_done);
++ if (likely(func))
++ ret = func(pkt, &is_done);
+
+ if (is_done)
+ __usbhsf_pkt_del(pkt);
+@@ -889,6 +890,7 @@ static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done)
+
+ pkt->trans = len;
+
++ usbhsf_tx_irq_ctrl(pipe, 0);
+ INIT_WORK(&pkt->work, xfer_work);
+ schedule_work(&pkt->work);
+
+diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
+index dc2aa3261202..046529656465 100644
+--- a/drivers/usb/renesas_usbhs/mod_gadget.c
++++ b/drivers/usb/renesas_usbhs/mod_gadget.c
+@@ -154,10 +154,14 @@ static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
+ struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
++ unsigned long flags;
+
+ ureq->req.actual = pkt->actual;
+
+- usbhsg_queue_pop(uep, ureq, 0);
++ usbhs_lock(priv, flags);
++ if (uep)
++ __usbhsg_queue_pop(uep, ureq, 0);
++ usbhs_unlock(priv, flags);
+ }
+
+ static void usbhsg_queue_push(struct usbhsg_uep *uep,
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index 7a76fe4c2f9e..bdc0f2f24f19 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -164,6 +164,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x18EF, 0xE025) }, /* ELV Marble Sound Board 1 */
+ { USB_DEVICE(0x1901, 0x0190) }, /* GE B850 CP2105 Recorder interface */
+ { USB_DEVICE(0x1901, 0x0193) }, /* GE B650 CP2104 PMC interface */
++ { USB_DEVICE(0x1901, 0x0194) }, /* GE Healthcare Remote Alarm Box */
+ { USB_DEVICE(0x19CF, 0x3000) }, /* Parrot NMEA GPS Flight Recorder */
+ { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */
+ { USB_DEVICE(0x1B1C, 0x1C00) }, /* Corsair USB Dongle */
+diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
+index 01bf53392819..244acb1299a9 100644
+--- a/drivers/usb/serial/cypress_m8.c
++++ b/drivers/usb/serial/cypress_m8.c
+@@ -447,6 +447,11 @@ static int cypress_generic_port_probe(struct usb_serial_port *port)
+ struct usb_serial *serial = port->serial;
+ struct cypress_private *priv;
+
++ if (!port->interrupt_out_urb || !port->interrupt_in_urb) {
++ dev_err(&port->dev, "required endpoint is missing\n");
++ return -ENODEV;
++ }
++
+ priv = kzalloc(sizeof(struct cypress_private), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+@@ -606,12 +611,6 @@ static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port)
+ cypress_set_termios(tty, port, &priv->tmp_termios);
+
+ /* setup the port and start reading from the device */
+- if (!port->interrupt_in_urb) {
+- dev_err(&port->dev, "%s - interrupt_in_urb is empty!\n",
+- __func__);
+- return -1;
+- }
+-
+ usb_fill_int_urb(port->interrupt_in_urb, serial->dev,
+ usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress),
+ port->interrupt_in_urb->transfer_buffer,
+diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
+index 12b0e67473ba..3df7b7ec178e 100644
+--- a/drivers/usb/serial/digi_acceleport.c
++++ b/drivers/usb/serial/digi_acceleport.c
+@@ -1251,8 +1251,27 @@ static int digi_port_init(struct usb_serial_port *port, unsigned port_num)
+
+ static int digi_startup(struct usb_serial *serial)
+ {
++ struct device *dev = &serial->interface->dev;
+ struct digi_serial *serial_priv;
+ int ret;
++ int i;
++
++ /* check whether the device has the expected number of endpoints */
++ if (serial->num_port_pointers < serial->type->num_ports + 1) {
++ dev_err(dev, "OOB endpoints missing\n");
++ return -ENODEV;
++ }
++
++ for (i = 0; i < serial->type->num_ports + 1 ; i++) {
++ if (!serial->port[i]->read_urb) {
++ dev_err(dev, "bulk-in endpoint missing\n");
++ return -ENODEV;
++ }
++ if (!serial->port[i]->write_urb) {
++ dev_err(dev, "bulk-out endpoint missing\n");
++ return -ENODEV;
++ }
++ }
+
+ serial_priv = kzalloc(sizeof(*serial_priv), GFP_KERNEL);
+ if (!serial_priv)
+diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
+index 8c660ae401d8..b61f12160d37 100644
+--- a/drivers/usb/serial/ftdi_sio.c
++++ b/drivers/usb/serial/ftdi_sio.c
+@@ -1004,6 +1004,10 @@ static const struct usb_device_id id_table_combined[] = {
+ { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_DISPLAY_PID) },
+ { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_LITE_PID) },
+ { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_ANALOG_PID) },
++ /* ICP DAS I-756xU devices */
++ { USB_DEVICE(ICPDAS_VID, ICPDAS_I7560U_PID) },
++ { USB_DEVICE(ICPDAS_VID, ICPDAS_I7561U_PID) },
++ { USB_DEVICE(ICPDAS_VID, ICPDAS_I7563U_PID) },
+ { } /* Terminating entry */
+ };
+
+diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
+index 7850071c0ae1..334bc600282d 100644
+--- a/drivers/usb/serial/ftdi_sio_ids.h
++++ b/drivers/usb/serial/ftdi_sio_ids.h
+@@ -872,6 +872,14 @@
+ #define NOVITUS_BONO_E_PID 0x6010
+
+ /*
++ * ICPDAS I-756*U devices
++ */
++#define ICPDAS_VID 0x1b5c
++#define ICPDAS_I7560U_PID 0x0103
++#define ICPDAS_I7561U_PID 0x0104
++#define ICPDAS_I7563U_PID 0x0105
++
++/*
+ * RT Systems programming cables for various ham radios
+ */
+ #define RTSYSTEMS_VID 0x2100 /* Vendor ID */
+diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
+index fd707d6a10e2..89726f702202 100644
+--- a/drivers/usb/serial/mct_u232.c
++++ b/drivers/usb/serial/mct_u232.c
+@@ -376,14 +376,21 @@ static void mct_u232_msr_to_state(struct usb_serial_port *port,
+
+ static int mct_u232_port_probe(struct usb_serial_port *port)
+ {
++ struct usb_serial *serial = port->serial;
+ struct mct_u232_private *priv;
+
++ /* check first to simplify error handling */
++ if (!serial->port[1] || !serial->port[1]->interrupt_in_urb) {
++ dev_err(&port->dev, "expected endpoint missing\n");
++ return -ENODEV;
++ }
++
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ /* Use second interrupt-in endpoint for reading. */
+- priv->read_urb = port->serial->port[1]->interrupt_in_urb;
++ priv->read_urb = serial->port[1]->interrupt_in_urb;
+ priv->read_urb->context = port;
+
+ spin_lock_init(&priv->lock);
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index ce3d6af977b7..94e520de6404 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -1830,6 +1830,8 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d02, 0xff, 0x00, 0x00) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x02, 0x01) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x00, 0x00) },
++ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e19, 0xff), /* D-Link DWM-221 B1 */
++ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */
+ { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) }, /* OLICARD300 - MT6225 */
+diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
+index 637ee7754ad5..546bb2b1ffc2 100644
+--- a/drivers/usb/storage/uas.c
++++ b/drivers/usb/storage/uas.c
+@@ -2,7 +2,7 @@
+ * USB Attached SCSI
+ * Note that this is not the same as the USB Mass Storage driver
+ *
+- * Copyright Hans de Goede <hdegoede@redhat.com> for Red Hat, Inc. 2013 - 2014
++ * Copyright Hans de Goede <hdegoede@redhat.com> for Red Hat, Inc. 2013 - 2016
+ * Copyright Matthew Wilcox for Intel Corp, 2010
+ * Copyright Sarah Sharp for Intel Corp, 2010
+ *
+@@ -757,6 +757,17 @@ static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd)
+ return SUCCESS;
+ }
+
++static int uas_target_alloc(struct scsi_target *starget)
++{
++ struct uas_dev_info *devinfo = (struct uas_dev_info *)
++ dev_to_shost(starget->dev.parent)->hostdata;
++
++ if (devinfo->flags & US_FL_NO_REPORT_LUNS)
++ starget->no_report_luns = 1;
++
++ return 0;
++}
++
+ static int uas_slave_alloc(struct scsi_device *sdev)
+ {
+ struct uas_dev_info *devinfo =
+@@ -808,6 +819,7 @@ static struct scsi_host_template uas_host_template = {
+ .module = THIS_MODULE,
+ .name = "uas",
+ .queuecommand = uas_queuecommand,
++ .target_alloc = uas_target_alloc,
+ .slave_alloc = uas_slave_alloc,
+ .slave_configure = uas_slave_configure,
+ .eh_abort_handler = uas_eh_abort_handler,
+diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
+index ccc113e83d88..53341a77d89f 100644
+--- a/drivers/usb/storage/unusual_uas.h
++++ b/drivers/usb/storage/unusual_uas.h
+@@ -64,6 +64,13 @@ UNUSUAL_DEV(0x0bc2, 0x3312, 0x0000, 0x9999,
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_NO_ATA_1X),
+
++/* Reported-by: David Webb <djw@noc.ac.uk> */
++UNUSUAL_DEV(0x0bc2, 0x331a, 0x0000, 0x9999,
++ "Seagate",
++ "Expansion Desk",
++ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
++ US_FL_NO_REPORT_LUNS),
++
+ /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
+ UNUSUAL_DEV(0x0bc2, 0x3320, 0x0000, 0x9999,
+ "Seagate",
+diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
+index 6c10c888f35f..ba8f759e723f 100644
+--- a/drivers/usb/storage/usb.c
++++ b/drivers/usb/storage/usb.c
+@@ -480,7 +480,7 @@ void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags)
+ US_FL_NO_READ_DISC_INFO | US_FL_NO_READ_CAPACITY_16 |
+ US_FL_INITIAL_READ10 | US_FL_WRITE_CACHE |
+ US_FL_NO_ATA_1X | US_FL_NO_REPORT_OPCODES |
+- US_FL_MAX_SECTORS_240);
++ US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS);
+
+ p = quirks;
+ while (*p) {
+@@ -530,6 +530,9 @@ void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags)
+ case 'i':
+ f |= US_FL_IGNORE_DEVICE;
+ break;
++ case 'j':
++ f |= US_FL_NO_REPORT_LUNS;
++ break;
+ case 'l':
+ f |= US_FL_NOT_LOCKABLE;
+ break;
+diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
+index e88e0997a889..6652258048df 100644
+--- a/drivers/virtio/virtio_pci_modern.c
++++ b/drivers/virtio/virtio_pci_modern.c
+@@ -17,6 +17,7 @@
+ *
+ */
+
++#include <linux/delay.h>
+ #define VIRTIO_PCI_NO_LEGACY
+ #include "virtio_pci_common.h"
+
+@@ -271,9 +272,13 @@ static void vp_reset(struct virtio_device *vdev)
+ struct virtio_pci_device *vp_dev = to_vp_device(vdev);
+ /* 0 status means a reset. */
+ vp_iowrite8(0, &vp_dev->common->device_status);
+- /* Flush out the status write, and flush in device writes,
+- * including MSI-X interrupts, if any. */
+- vp_ioread8(&vp_dev->common->device_status);
++ /* After writing 0 to device_status, the driver MUST wait for a read of
++ * device_status to return 0 before reinitializing the device.
++ * This will flush out the status write, and flush in device writes,
++ * including MSI-X interrupts, if any.
++ */
++ while (vp_ioread8(&vp_dev->common->device_status))
++ msleep(1);
+ /* Flush pending VQ/configuration callbacks. */
+ vp_synchronize_vectors(vdev);
+ }
+diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
+index 38387950490e..511aab3b9206 100644
+--- a/drivers/xen/events/events_base.c
++++ b/drivers/xen/events/events_base.c
+@@ -483,9 +483,19 @@ static void eoi_pirq(struct irq_data *data)
+ struct physdev_eoi eoi = { .irq = pirq_from_irq(data->irq) };
+ int rc = 0;
+
+- irq_move_irq(data);
++ if (!VALID_EVTCHN(evtchn))
++ return;
+
+- if (VALID_EVTCHN(evtchn))
++ if (unlikely(irqd_is_setaffinity_pending(data))) {
++ int masked = test_and_set_mask(evtchn);
++
++ clear_evtchn(evtchn);
++
++ irq_move_masked_irq(data);
++
++ if (!masked)
++ unmask_evtchn(evtchn);
++ } else
+ clear_evtchn(evtchn);
+
+ if (pirq_needs_eoi(data->irq)) {
+@@ -1360,9 +1370,19 @@ static void ack_dynirq(struct irq_data *data)
+ {
+ int evtchn = evtchn_from_irq(data->irq);
+
+- irq_move_irq(data);
++ if (!VALID_EVTCHN(evtchn))
++ return;
+
+- if (VALID_EVTCHN(evtchn))
++ if (unlikely(irqd_is_setaffinity_pending(data))) {
++ int masked = test_and_set_mask(evtchn);
++
++ clear_evtchn(evtchn);
++
++ irq_move_masked_irq(data);
++
++ if (!masked)
++ unmask_evtchn(evtchn);
++ } else
+ clear_evtchn(evtchn);
+ }
+
+diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
+index 4920fceffacb..5c222f3c4841 100644
+--- a/fs/btrfs/tree-log.c
++++ b/fs/btrfs/tree-log.c
+@@ -4123,6 +4123,308 @@ static int logged_inode_size(struct btrfs_root *log, struct inode *inode,
+ return 0;
+ }
+
++/*
++ * At the moment we always log all xattrs. This is to figure out at log replay
++ * time which xattrs must have their deletion replayed. If a xattr is missing
++ * in the log tree and exists in the fs/subvol tree, we delete it. This is
++ * because if a xattr is deleted, the inode is fsynced and a power failure
++ * happens, causing the log to be replayed the next time the fs is mounted,
++ * we want the xattr to not exist anymore (same behaviour as other filesystems
++ * with a journal, ext3/4, xfs, f2fs, etc).
++ */
++static int btrfs_log_all_xattrs(struct btrfs_trans_handle *trans,
++ struct btrfs_root *root,
++ struct inode *inode,
++ struct btrfs_path *path,
++ struct btrfs_path *dst_path)
++{
++ int ret;
++ struct btrfs_key key;
++ const u64 ino = btrfs_ino(inode);
++ int ins_nr = 0;
++ int start_slot = 0;
++
++ key.objectid = ino;
++ key.type = BTRFS_XATTR_ITEM_KEY;
++ key.offset = 0;
++
++ ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
++ if (ret < 0)
++ return ret;
++
++ while (true) {
++ int slot = path->slots[0];
++ struct extent_buffer *leaf = path->nodes[0];
++ int nritems = btrfs_header_nritems(leaf);
++
++ if (slot >= nritems) {
++ if (ins_nr > 0) {
++ u64 last_extent = 0;
++
++ ret = copy_items(trans, inode, dst_path, path,
++ &last_extent, start_slot,
++ ins_nr, 1, 0);
++ /* can't be 1, extent items aren't processed */
++ ASSERT(ret <= 0);
++ if (ret < 0)
++ return ret;
++ ins_nr = 0;
++ }
++ ret = btrfs_next_leaf(root, path);
++ if (ret < 0)
++ return ret;
++ else if (ret > 0)
++ break;
++ continue;
++ }
++
++ btrfs_item_key_to_cpu(leaf, &key, slot);
++ if (key.objectid != ino || key.type != BTRFS_XATTR_ITEM_KEY)
++ break;
++
++ if (ins_nr == 0)
++ start_slot = slot;
++ ins_nr++;
++ path->slots[0]++;
++ cond_resched();
++ }
++ if (ins_nr > 0) {
++ u64 last_extent = 0;
++
++ ret = copy_items(trans, inode, dst_path, path,
++ &last_extent, start_slot,
++ ins_nr, 1, 0);
++ /* can't be 1, extent items aren't processed */
++ ASSERT(ret <= 0);
++ if (ret < 0)
++ return ret;
++ }
++
++ return 0;
++}
++
++/*
++ * If the no holes feature is enabled we need to make sure any hole between the
++ * last extent and the i_size of our inode is explicitly marked in the log. This
++ * is to make sure that doing something like:
++ *
++ * 1) create file with 128Kb of data
++ * 2) truncate file to 64Kb
++ * 3) truncate file to 256Kb
++ * 4) fsync file
++ * 5) <crash/power failure>
++ * 6) mount fs and trigger log replay
++ *
++ * Will give us a file with a size of 256Kb, the first 64Kb of data match what
++ * the file had in its first 64Kb of data at step 1 and the last 192Kb of the
++ * file correspond to a hole. The presence of explicit holes in a log tree is
++ * what guarantees that log replay will remove/adjust file extent items in the
++ * fs/subvol tree.
++ *
++ * Here we do not need to care about holes between extents, that is already done
++ * by copy_items(). We also only need to do this in the full sync path, where we
++ * lookup for extents from the fs/subvol tree only. In the fast path case, we
++ * lookup the list of modified extent maps and if any represents a hole, we
++ * insert a corresponding extent representing a hole in the log tree.
++ */
++static int btrfs_log_trailing_hole(struct btrfs_trans_handle *trans,
++ struct btrfs_root *root,
++ struct inode *inode,
++ struct btrfs_path *path)
++{
++ int ret;
++ struct btrfs_key key;
++ u64 hole_start;
++ u64 hole_size;
++ struct extent_buffer *leaf;
++ struct btrfs_root *log = root->log_root;
++ const u64 ino = btrfs_ino(inode);
++ const u64 i_size = i_size_read(inode);
++
++ if (!btrfs_fs_incompat(root->fs_info, NO_HOLES))
++ return 0;
++
++ key.objectid = ino;
++ key.type = BTRFS_EXTENT_DATA_KEY;
++ key.offset = (u64)-1;
++
++ ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
++ ASSERT(ret != 0);
++ if (ret < 0)
++ return ret;
++
++ ASSERT(path->slots[0] > 0);
++ path->slots[0]--;
++ leaf = path->nodes[0];
++ btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
++
++ if (key.objectid != ino || key.type != BTRFS_EXTENT_DATA_KEY) {
++ /* inode does not have any extents */
++ hole_start = 0;
++ hole_size = i_size;
++ } else {
++ struct btrfs_file_extent_item *extent;
++ u64 len;
++
++ /*
++ * If there's an extent beyond i_size, an explicit hole was
++ * already inserted by copy_items().
++ */
++ if (key.offset >= i_size)
++ return 0;
++
++ extent = btrfs_item_ptr(leaf, path->slots[0],
++ struct btrfs_file_extent_item);
++
++ if (btrfs_file_extent_type(leaf, extent) ==
++ BTRFS_FILE_EXTENT_INLINE) {
++ len = btrfs_file_extent_inline_len(leaf,
++ path->slots[0],
++ extent);
++ ASSERT(len == i_size);
++ return 0;
++ }
++
++ len = btrfs_file_extent_num_bytes(leaf, extent);
++ /* Last extent goes beyond i_size, no need to log a hole. */
++ if (key.offset + len > i_size)
++ return 0;
++ hole_start = key.offset + len;
++ hole_size = i_size - hole_start;
++ }
++ btrfs_release_path(path);
++
++ /* Last extent ends at i_size. */
++ if (hole_size == 0)
++ return 0;
++
++ hole_size = ALIGN(hole_size, root->sectorsize);
++ ret = btrfs_insert_file_extent(trans, log, ino, hole_start, 0, 0,
++ hole_size, 0, hole_size, 0, 0, 0);
++ return ret;
++}
++
++/*
++ * When we are logging a new inode X, check if it doesn't have a reference that
++ * matches the reference from some other inode Y created in a past transaction
++ * and that was renamed in the current transaction. If we don't do this, then at
++ * log replay time we can lose inode Y (and all its files if it's a directory):
++ *
++ * mkdir /mnt/x
++ * echo "hello world" > /mnt/x/foobar
++ * sync
++ * mv /mnt/x /mnt/y
++ * mkdir /mnt/x # or touch /mnt/x
++ * xfs_io -c fsync /mnt/x
++ * <power fail>
++ * mount fs, trigger log replay
++ *
++ * After the log replay procedure, we would lose the first directory and all its
++ * files (file foobar).
++ * For the case where inode Y is not a directory we simply end up losing it:
++ *
++ * echo "123" > /mnt/foo
++ * sync
++ * mv /mnt/foo /mnt/bar
++ * echo "abc" > /mnt/foo
++ * xfs_io -c fsync /mnt/foo
++ * <power fail>
++ *
++ * We also need this for cases where a snapshot entry is replaced by some other
++ * entry (file or directory) otherwise we end up with an unreplayable log due to
++ * attempts to delete the snapshot entry (entry of type BTRFS_ROOT_ITEM_KEY) as
++ * if it were a regular entry:
++ *
++ * mkdir /mnt/x
++ * btrfs subvolume snapshot /mnt /mnt/x/snap
++ * btrfs subvolume delete /mnt/x/snap
++ * rmdir /mnt/x
++ * mkdir /mnt/x
++ * fsync /mnt/x or fsync some new file inside it
++ * <power fail>
++ *
++ * The snapshot delete, rmdir of x, mkdir of a new x and the fsync all happen in
++ * the same transaction.
++ */
++static int btrfs_check_ref_name_override(struct extent_buffer *eb,
++ const int slot,
++ const struct btrfs_key *key,
++ struct inode *inode)
++{
++ int ret;
++ struct btrfs_path *search_path;
++ char *name = NULL;
++ u32 name_len = 0;
++ u32 item_size = btrfs_item_size_nr(eb, slot);
++ u32 cur_offset = 0;
++ unsigned long ptr = btrfs_item_ptr_offset(eb, slot);
++
++ search_path = btrfs_alloc_path();
++ if (!search_path)
++ return -ENOMEM;
++ search_path->search_commit_root = 1;
++ search_path->skip_locking = 1;
++
++ while (cur_offset < item_size) {
++ u64 parent;
++ u32 this_name_len;
++ u32 this_len;
++ unsigned long name_ptr;
++ struct btrfs_dir_item *di;
++
++ if (key->type == BTRFS_INODE_REF_KEY) {
++ struct btrfs_inode_ref *iref;
++
++ iref = (struct btrfs_inode_ref *)(ptr + cur_offset);
++ parent = key->offset;
++ this_name_len = btrfs_inode_ref_name_len(eb, iref);
++ name_ptr = (unsigned long)(iref + 1);
++ this_len = sizeof(*iref) + this_name_len;
++ } else {
++ struct btrfs_inode_extref *extref;
++
++ extref = (struct btrfs_inode_extref *)(ptr +
++ cur_offset);
++ parent = btrfs_inode_extref_parent(eb, extref);
++ this_name_len = btrfs_inode_extref_name_len(eb, extref);
++ name_ptr = (unsigned long)&extref->name;
++ this_len = sizeof(*extref) + this_name_len;
++ }
++
++ if (this_name_len > name_len) {
++ char *new_name;
++
++ new_name = krealloc(name, this_name_len, GFP_NOFS);
++ if (!new_name) {
++ ret = -ENOMEM;
++ goto out;
++ }
++ name_len = this_name_len;
++ name = new_name;
++ }
++
++ read_extent_buffer(eb, name, name_ptr, this_name_len);
++ di = btrfs_lookup_dir_item(NULL, BTRFS_I(inode)->root,
++ search_path, parent,
++ name, this_name_len, 0);
++ if (di && !IS_ERR(di)) {
++ ret = 1;
++ goto out;
++ } else if (IS_ERR(di)) {
++ ret = PTR_ERR(di);
++ goto out;
++ }
++ btrfs_release_path(search_path);
++
++ cur_offset += this_len;
++ }
++ ret = 0;
++out:
++ btrfs_free_path(search_path);
++ kfree(name);
++ return ret;
++}
++
+ /* log a single inode in the tree log.
+ * At least one parent directory for this inode must exist in the tree
+ * or be logged already.
+@@ -4295,6 +4597,41 @@ again:
+ if (min_key.type == BTRFS_INODE_ITEM_KEY)
+ need_log_inode_item = false;
+
++ if ((min_key.type == BTRFS_INODE_REF_KEY ||
++ min_key.type == BTRFS_INODE_EXTREF_KEY) &&
++ BTRFS_I(inode)->generation == trans->transid) {
++ ret = btrfs_check_ref_name_override(path->nodes[0],
++ path->slots[0],
++ &min_key, inode);
++ if (ret < 0) {
++ err = ret;
++ goto out_unlock;
++ } else if (ret > 0) {
++ err = 1;
++ btrfs_set_log_full_commit(root->fs_info, trans);
++ goto out_unlock;
++ }
++ }
++
++ /* Skip xattrs, we log them later with btrfs_log_all_xattrs() */
++ if (min_key.type == BTRFS_XATTR_ITEM_KEY) {
++ if (ins_nr == 0)
++ goto next_slot;
++ ret = copy_items(trans, inode, dst_path, path,
++ &last_extent, ins_start_slot,
++ ins_nr, inode_only, logged_isize);
++ if (ret < 0) {
++ err = ret;
++ goto out_unlock;
++ }
++ ins_nr = 0;
++ if (ret) {
++ btrfs_release_path(path);
++ continue;
++ }
++ goto next_slot;
++ }
++
+ src = path->nodes[0];
+ if (ins_nr && ins_start_slot + ins_nr == path->slots[0]) {
+ ins_nr++;
+@@ -4362,6 +4699,18 @@ next_slot:
+ ins_nr = 0;
+ }
+
++ btrfs_release_path(path);
++ btrfs_release_path(dst_path);
++ err = btrfs_log_all_xattrs(trans, root, inode, path, dst_path);
++ if (err)
++ goto out_unlock;
++ if (max_key.type >= BTRFS_EXTENT_DATA_KEY && !fast_search) {
++ btrfs_release_path(path);
++ btrfs_release_path(dst_path);
++ err = btrfs_log_trailing_hole(trans, root, inode, path);
++ if (err)
++ goto out_unlock;
++ }
+ log_extents:
+ btrfs_release_path(path);
+ btrfs_release_path(dst_path);
+diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
+index 8bec8f1e4b31..153c9a0db303 100644
+--- a/fs/debugfs/inode.c
++++ b/fs/debugfs/inode.c
+@@ -462,7 +462,7 @@ struct dentry *debugfs_create_automount(const char *name,
+ if (unlikely(!inode))
+ return failed_creating(dentry);
+
+- inode->i_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO;
++ make_empty_dir_inode(inode);
+ inode->i_flags |= S_AUTOMOUNT;
+ inode->i_private = data;
+ dentry->d_fsdata = (void *)f;
+diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
+index 95dfff88de11..15213a567301 100644
+--- a/fs/ext4/ext4.h
++++ b/fs/ext4/ext4.h
+@@ -813,6 +813,29 @@ do { \
+ #include "extents_status.h"
+
+ /*
++ * Lock subclasses for i_data_sem in the ext4_inode_info structure.
++ *
++ * These are needed to avoid lockdep false positives when we need to
++ * allocate blocks to the quota inode during ext4_map_blocks(), while
++ * holding i_data_sem for a normal (non-quota) inode. Since we don't
++ * do quota tracking for the quota inode, this avoids deadlock (as
++ * well as infinite recursion, since it isn't turtles all the way
++ * down...)
++ *
++ * I_DATA_SEM_NORMAL - Used for most inodes
++ * I_DATA_SEM_OTHER - Used by move_inode.c for the second normal inode
++ * where the second inode has larger inode number
++ * than the first
++ * I_DATA_SEM_QUOTA - Used for quota inodes only
++ */
++enum {
++ I_DATA_SEM_NORMAL = 0,
++ I_DATA_SEM_OTHER,
++ I_DATA_SEM_QUOTA,
++};
++
++
++/*
+ * fourth extended file system inode data in memory
+ */
+ struct ext4_inode_info {
+diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
+index 3fb92abe5707..bd059e985485 100644
+--- a/fs/ext4/move_extent.c
++++ b/fs/ext4/move_extent.c
+@@ -60,10 +60,10 @@ ext4_double_down_write_data_sem(struct inode *first, struct inode *second)
+ {
+ if (first < second) {
+ down_write(&EXT4_I(first)->i_data_sem);
+- down_write_nested(&EXT4_I(second)->i_data_sem, SINGLE_DEPTH_NESTING);
++ down_write_nested(&EXT4_I(second)->i_data_sem, I_DATA_SEM_OTHER);
+ } else {
+ down_write(&EXT4_I(second)->i_data_sem);
+- down_write_nested(&EXT4_I(first)->i_data_sem, SINGLE_DEPTH_NESTING);
++ down_write_nested(&EXT4_I(first)->i_data_sem, I_DATA_SEM_OTHER);
+
+ }
+ }
+@@ -487,6 +487,13 @@ mext_check_arguments(struct inode *orig_inode,
+ return -EBUSY;
+ }
+
++ if (IS_NOQUOTA(orig_inode) || IS_NOQUOTA(donor_inode)) {
++ ext4_debug("ext4 move extent: The argument files should "
++ "not be quota files [ino:orig %lu, donor %lu]\n",
++ orig_inode->i_ino, donor_inode->i_ino);
++ return -EBUSY;
++ }
++
+ /* Ext4 move extent supports only extent based file */
+ if (!(ext4_test_inode_flag(orig_inode, EXT4_INODE_EXTENTS))) {
+ ext4_debug("ext4 move extent: orig file is not extents "
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index 6f5ca3e92246..aedff7963468 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -1276,9 +1276,9 @@ static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
+ return -1;
+ }
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) {
+- ext4_msg(sb, KERN_ERR, "Cannot set journaled quota options "
+- "when QUOTA feature is enabled");
+- return -1;
++ ext4_msg(sb, KERN_INFO, "Journaled quota options "
++ "ignored when QUOTA feature is enabled");
++ return 1;
+ }
+ qname = match_strdup(args);
+ if (!qname) {
+@@ -1636,10 +1636,10 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
+ }
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_QUOTA)) {
+- ext4_msg(sb, KERN_ERR,
+- "Cannot set journaled quota options "
++ ext4_msg(sb, KERN_INFO,
++ "Quota format mount options ignored "
+ "when QUOTA feature is enabled");
+- return -1;
++ return 1;
+ }
+ sbi->s_jquota_fmt = m->mount_opt;
+ #endif
+@@ -1696,11 +1696,11 @@ static int parse_options(char *options, struct super_block *sb,
+ #ifdef CONFIG_QUOTA
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
+ (test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) {
+- ext4_msg(sb, KERN_ERR, "Cannot set quota options when QUOTA "
+- "feature is enabled");
+- return 0;
+- }
+- if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
++ ext4_msg(sb, KERN_INFO, "Quota feature enabled, usrquota and grpquota "
++ "mount options ignored.");
++ clear_opt(sb, USRQUOTA);
++ clear_opt(sb, GRPQUOTA);
++ } else if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
+ if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
+ clear_opt(sb, USRQUOTA);
+
+@@ -5272,6 +5272,20 @@ static int ext4_quota_on_mount(struct super_block *sb, int type)
+ EXT4_SB(sb)->s_jquota_fmt, type);
+ }
+
++static void lockdep_set_quota_inode(struct inode *inode, int subclass)
++{
++ struct ext4_inode_info *ei = EXT4_I(inode);
++
++ /* The first argument of lockdep_set_subclass has to be
++ * *exactly* the same as the argument to init_rwsem() --- in
++ * this case, in init_once() --- or lockdep gets unhappy
++ * because the name of the lock is set using the
++ * stringification of the argument to init_rwsem().
++ */
++ (void) ei; /* shut up clang warning if !CONFIG_LOCKDEP */
++ lockdep_set_subclass(&ei->i_data_sem, subclass);
++}
++
+ /*
+ * Standard function to be called on quota_on
+ */
+@@ -5311,8 +5325,12 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
+ if (err)
+ return err;
+ }
+-
+- return dquot_quota_on(sb, type, format_id, path);
++ lockdep_set_quota_inode(path->dentry->d_inode, I_DATA_SEM_QUOTA);
++ err = dquot_quota_on(sb, type, format_id, path);
++ if (err)
++ lockdep_set_quota_inode(path->dentry->d_inode,
++ I_DATA_SEM_NORMAL);
++ return err;
+ }
+
+ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
+@@ -5338,8 +5356,11 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
+
+ /* Don't account quota for quota files to avoid recursion */
+ qf_inode->i_flags |= S_NOQUOTA;
++ lockdep_set_quota_inode(qf_inode, I_DATA_SEM_QUOTA);
+ err = dquot_enable(qf_inode, type, format_id, flags);
+ iput(qf_inode);
++ if (err)
++ lockdep_set_quota_inode(qf_inode, I_DATA_SEM_NORMAL);
+
+ return err;
+ }
+diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
+index 371e560d13cf..27fa57322550 100644
+--- a/include/linux/compiler-gcc.h
++++ b/include/linux/compiler-gcc.h
+@@ -115,10 +115,122 @@
+ #define __maybe_unused __attribute__((unused))
+ #define __always_unused __attribute__((unused))
+
+-#define __gcc_header(x) #x
+-#define _gcc_header(x) __gcc_header(linux/compiler-gcc##x.h)
+-#define gcc_header(x) _gcc_header(x)
+-#include gcc_header(__GNUC__)
++/* gcc version specific checks */
++
++#if GCC_VERSION < 30200
++# error Sorry, your compiler is too old - please upgrade it.
++#endif
++
++#if GCC_VERSION < 30300
++# define __used __attribute__((__unused__))
++#else
++# define __used __attribute__((__used__))
++#endif
++
++#ifdef CONFIG_GCOV_KERNEL
++# if GCC_VERSION < 30400
++# error "GCOV profiling support for gcc versions below 3.4 not included"
++# endif /* __GNUC_MINOR__ */
++#endif /* CONFIG_GCOV_KERNEL */
++
++#if GCC_VERSION >= 30400
++#define __must_check __attribute__((warn_unused_result))
++#endif
++
++#if GCC_VERSION >= 40000
++
++/* GCC 4.1.[01] miscompiles __weak */
++#ifdef __KERNEL__
++# if GCC_VERSION >= 40100 && GCC_VERSION <= 40101
++# error Your version of gcc miscompiles the __weak directive
++# endif
++#endif
++
++#define __used __attribute__((__used__))
++#define __compiler_offsetof(a, b) \
++ __builtin_offsetof(a, b)
++
++#if GCC_VERSION >= 40100 && GCC_VERSION < 40600
++# define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
++#endif
++
++#if GCC_VERSION >= 40300
++/* Mark functions as cold. gcc will assume any path leading to a call
++ * to them will be unlikely. This means a lot of manual unlikely()s
++ * are unnecessary now for any paths leading to the usual suspects
++ * like BUG(), printk(), panic() etc. [but let's keep them for now for
++ * older compilers]
++ *
++ * Early snapshots of gcc 4.3 don't support this and we can't detect this
++ * in the preprocessor, but we can live with this because they're unreleased.
++ * Maketime probing would be overkill here.
++ *
++ * gcc also has a __attribute__((__hot__)) to move hot functions into
++ * a special section, but I don't see any sense in this right now in
++ * the kernel context
++ */
++#define __cold __attribute__((__cold__))
++
++#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
++
++#ifndef __CHECKER__
++# define __compiletime_warning(message) __attribute__((warning(message)))
++# define __compiletime_error(message) __attribute__((error(message)))
++#endif /* __CHECKER__ */
++#endif /* GCC_VERSION >= 40300 */
++
++#if GCC_VERSION >= 40500
++/*
++ * Mark a position in code as unreachable. This can be used to
++ * suppress control flow warnings after asm blocks that transfer
++ * control elsewhere.
++ *
++ * Early snapshots of gcc 4.5 don't support this and we can't detect
++ * this in the preprocessor, but we can live with this because they're
++ * unreleased. Really, we need to have autoconf for the kernel.
++ */
++#define unreachable() __builtin_unreachable()
++
++/* Mark a function definition as prohibited from being cloned. */
++#define __noclone __attribute__((__noclone__, __optimize__("no-tracer")))
++
++#endif /* GCC_VERSION >= 40500 */
++
++#if GCC_VERSION >= 40600
++/*
++ * Tell the optimizer that something else uses this function or variable.
++ */
++#define __visible __attribute__((externally_visible))
++#endif
++
++/*
++ * GCC 'asm goto' miscompiles certain code sequences:
++ *
++ * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
++ *
++ * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
++ *
++ * (asm goto is automatically volatile - the naming reflects this.)
++ */
++#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
++
++#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
++#if GCC_VERSION >= 40400
++#define __HAVE_BUILTIN_BSWAP32__
++#define __HAVE_BUILTIN_BSWAP64__
++#endif
++#if GCC_VERSION >= 40800 || (defined(__powerpc__) && GCC_VERSION >= 40600)
++#define __HAVE_BUILTIN_BSWAP16__
++#endif
++#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
++
++#if GCC_VERSION >= 50000
++#define KASAN_ABI_VERSION 4
++#elif GCC_VERSION >= 40902
++#define KASAN_ABI_VERSION 3
++#endif
++
++#endif /* gcc version >= 40000 specific checks */
+
+ #if !defined(__noclone)
+ #define __noclone /* not needed */
+diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h
+deleted file mode 100644
+index 7d89febe4d79..000000000000
+--- a/include/linux/compiler-gcc3.h
++++ /dev/null
+@@ -1,23 +0,0 @@
+-#ifndef __LINUX_COMPILER_H
+-#error "Please don't include <linux/compiler-gcc3.h> directly, include <linux/compiler.h> instead."
+-#endif
+-
+-#if GCC_VERSION < 30200
+-# error Sorry, your compiler is too old - please upgrade it.
+-#endif
+-
+-#if GCC_VERSION >= 30300
+-# define __used __attribute__((__used__))
+-#else
+-# define __used __attribute__((__unused__))
+-#endif
+-
+-#if GCC_VERSION >= 30400
+-#define __must_check __attribute__((warn_unused_result))
+-#endif
+-
+-#ifdef CONFIG_GCOV_KERNEL
+-# if GCC_VERSION < 30400
+-# error "GCOV profiling support for gcc versions below 3.4 not included"
+-# endif /* __GNUC_MINOR__ */
+-#endif /* CONFIG_GCOV_KERNEL */
+diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
+deleted file mode 100644
+index 769e19864632..000000000000
+--- a/include/linux/compiler-gcc4.h
++++ /dev/null
+@@ -1,91 +0,0 @@
+-#ifndef __LINUX_COMPILER_H
+-#error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead."
+-#endif
+-
+-/* GCC 4.1.[01] miscompiles __weak */
+-#ifdef __KERNEL__
+-# if GCC_VERSION >= 40100 && GCC_VERSION <= 40101
+-# error Your version of gcc miscompiles the __weak directive
+-# endif
+-#endif
+-
+-#define __used __attribute__((__used__))
+-#define __must_check __attribute__((warn_unused_result))
+-#define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
+-
+-#if GCC_VERSION >= 40100 && GCC_VERSION < 40600
+-# define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
+-#endif
+-
+-#if GCC_VERSION >= 40300
+-/* Mark functions as cold. gcc will assume any path leading to a call
+- to them will be unlikely. This means a lot of manual unlikely()s
+- are unnecessary now for any paths leading to the usual suspects
+- like BUG(), printk(), panic() etc. [but let's keep them for now for
+- older compilers]
+-
+- Early snapshots of gcc 4.3 don't support this and we can't detect this
+- in the preprocessor, but we can live with this because they're unreleased.
+- Maketime probing would be overkill here.
+-
+- gcc also has a __attribute__((__hot__)) to move hot functions into
+- a special section, but I don't see any sense in this right now in
+- the kernel context */
+-#define __cold __attribute__((__cold__))
+-
+-#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
+-
+-#ifndef __CHECKER__
+-# define __compiletime_warning(message) __attribute__((warning(message)))
+-# define __compiletime_error(message) __attribute__((error(message)))
+-#endif /* __CHECKER__ */
+-#endif /* GCC_VERSION >= 40300 */
+-
+-#if GCC_VERSION >= 40500
+-/*
+- * Mark a position in code as unreachable. This can be used to
+- * suppress control flow warnings after asm blocks that transfer
+- * control elsewhere.
+- *
+- * Early snapshots of gcc 4.5 don't support this and we can't detect
+- * this in the preprocessor, but we can live with this because they're
+- * unreleased. Really, we need to have autoconf for the kernel.
+- */
+-#define unreachable() __builtin_unreachable()
+-
+-/* Mark a function definition as prohibited from being cloned. */
+-#define __noclone __attribute__((__noclone__))
+-
+-#endif /* GCC_VERSION >= 40500 */
+-
+-#if GCC_VERSION >= 40600
+-/*
+- * Tell the optimizer that something else uses this function or variable.
+- */
+-#define __visible __attribute__((externally_visible))
+-#endif
+-
+-/*
+- * GCC 'asm goto' miscompiles certain code sequences:
+- *
+- * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
+- *
+- * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
+- *
+- * (asm goto is automatically volatile - the naming reflects this.)
+- */
+-#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
+-
+-#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
+-#if GCC_VERSION >= 40400
+-#define __HAVE_BUILTIN_BSWAP32__
+-#define __HAVE_BUILTIN_BSWAP64__
+-#endif
+-#if GCC_VERSION >= 40800 || (defined(__powerpc__) && GCC_VERSION >= 40600)
+-#define __HAVE_BUILTIN_BSWAP16__
+-#endif
+-#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
+-
+-#if GCC_VERSION >= 40902
+-#define KASAN_ABI_VERSION 3
+-#endif
+diff --git a/include/linux/compiler-gcc5.h b/include/linux/compiler-gcc5.h
+deleted file mode 100644
+index efee493714eb..000000000000
+--- a/include/linux/compiler-gcc5.h
++++ /dev/null
+@@ -1,67 +0,0 @@
+-#ifndef __LINUX_COMPILER_H
+-#error "Please don't include <linux/compiler-gcc5.h> directly, include <linux/compiler.h> instead."
+-#endif
+-
+-#define __used __attribute__((__used__))
+-#define __must_check __attribute__((warn_unused_result))
+-#define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
+-
+-/* Mark functions as cold. gcc will assume any path leading to a call
+- to them will be unlikely. This means a lot of manual unlikely()s
+- are unnecessary now for any paths leading to the usual suspects
+- like BUG(), printk(), panic() etc. [but let's keep them for now for
+- older compilers]
+-
+- Early snapshots of gcc 4.3 don't support this and we can't detect this
+- in the preprocessor, but we can live with this because they're unreleased.
+- Maketime probing would be overkill here.
+-
+- gcc also has a __attribute__((__hot__)) to move hot functions into
+- a special section, but I don't see any sense in this right now in
+- the kernel context */
+-#define __cold __attribute__((__cold__))
+-
+-#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
+-
+-#ifndef __CHECKER__
+-# define __compiletime_warning(message) __attribute__((warning(message)))
+-# define __compiletime_error(message) __attribute__((error(message)))
+-#endif /* __CHECKER__ */
+-
+-/*
+- * Mark a position in code as unreachable. This can be used to
+- * suppress control flow warnings after asm blocks that transfer
+- * control elsewhere.
+- *
+- * Early snapshots of gcc 4.5 don't support this and we can't detect
+- * this in the preprocessor, but we can live with this because they're
+- * unreleased. Really, we need to have autoconf for the kernel.
+- */
+-#define unreachable() __builtin_unreachable()
+-
+-/* Mark a function definition as prohibited from being cloned. */
+-#define __noclone __attribute__((__noclone__))
+-
+-/*
+- * Tell the optimizer that something else uses this function or variable.
+- */
+-#define __visible __attribute__((externally_visible))
+-
+-/*
+- * GCC 'asm goto' miscompiles certain code sequences:
+- *
+- * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
+- *
+- * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
+- *
+- * (asm goto is automatically volatile - the naming reflects this.)
+- */
+-#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
+-
+-#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
+-#define __HAVE_BUILTIN_BSWAP32__
+-#define __HAVE_BUILTIN_BSWAP64__
+-#define __HAVE_BUILTIN_BSWAP16__
+-#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
+-
+-#define KASAN_ABI_VERSION 4
+diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h
+index 7f5f78bd15ad..245f57dbbb61 100644
+--- a/include/linux/usb_usual.h
++++ b/include/linux/usb_usual.h
+@@ -79,6 +79,8 @@
+ /* Cannot handle MI_REPORT_SUPPORTED_OPERATION_CODES */ \
+ US_FLAG(MAX_SECTORS_240, 0x08000000) \
+ /* Sets max_sectors to 240 */ \
++ US_FLAG(NO_REPORT_LUNS, 0x10000000) \
++ /* Cannot handle REPORT_LUNS */ \
+
+ #define US_FLAG(name, value) US_FL_##name = value ,
+ enum { US_DO_ALL_FLAGS };
+diff --git a/lib/assoc_array.c b/lib/assoc_array.c
+index 03dd576e6773..59fd7c0b119c 100644
+--- a/lib/assoc_array.c
++++ b/lib/assoc_array.c
+@@ -524,7 +524,9 @@ static bool assoc_array_insert_into_terminal_node(struct assoc_array_edit *edit,
+ free_slot = i;
+ continue;
+ }
+- if (ops->compare_object(assoc_array_ptr_to_leaf(ptr), index_key)) {
++ if (assoc_array_ptr_is_leaf(ptr) &&
++ ops->compare_object(assoc_array_ptr_to_leaf(ptr),
++ index_key)) {
+ pr_devel("replace in slot %d\n", i);
+ edit->leaf_p = &node->slots[i];
+ edit->dead_leaf = node->slots[i];
+diff --git a/lib/lz4/lz4defs.h b/lib/lz4/lz4defs.h
+index abcecdc2d0f2..0710a62ad2f6 100644
+--- a/lib/lz4/lz4defs.h
++++ b/lib/lz4/lz4defs.h
+@@ -11,8 +11,7 @@
+ /*
+ * Detects 64 bits mode
+ */
+-#if (defined(__x86_64__) || defined(__x86_64) || defined(__amd64__) \
+- || defined(__ppc64__) || defined(__LP64__))
++#if defined(CONFIG_64BIT)
+ #define LZ4_ARCH64 1
+ #else
+ #define LZ4_ARCH64 0
+@@ -35,6 +34,10 @@ typedef struct _U64_S { u64 v; } U64_S;
+
+ #define PUT4(s, d) (A32(d) = A32(s))
+ #define PUT8(s, d) (A64(d) = A64(s))
++
++#define LZ4_READ_LITTLEENDIAN_16(d, s, p) \
++ (d = s - A16(p))
++
+ #define LZ4_WRITE_LITTLEENDIAN_16(p, v) \
+ do { \
+ A16(p) = v; \
+@@ -51,10 +54,13 @@ typedef struct _U64_S { u64 v; } U64_S;
+ #define PUT8(s, d) \
+ put_unaligned(get_unaligned((const u64 *) s), (u64 *) d)
+
+-#define LZ4_WRITE_LITTLEENDIAN_16(p, v) \
+- do { \
+- put_unaligned(v, (u16 *)(p)); \
+- p += 2; \
++#define LZ4_READ_LITTLEENDIAN_16(d, s, p) \
++ (d = s - get_unaligned_le16(p))
++
++#define LZ4_WRITE_LITTLEENDIAN_16(p, v) \
++ do { \
++ put_unaligned_le16(v, (u16 *)(p)); \
++ p += 2; \
+ } while (0)
+ #endif
+
+@@ -140,9 +146,6 @@ typedef struct _U64_S { u64 v; } U64_S;
+
+ #endif
+
+-#define LZ4_READ_LITTLEENDIAN_16(d, s, p) \
+- (d = s - get_unaligned_le16(p))
+-
+ #define LZ4_WILDCOPY(s, d, e) \
+ do { \
+ LZ4_COPYPACKET(s, d); \
+diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
+index 06d3d665a9fd..3ce0b861cc0e 100644
+--- a/net/ipv4/tcp_cubic.c
++++ b/net/ipv4/tcp_cubic.c
+@@ -151,6 +151,27 @@ static void bictcp_init(struct sock *sk)
+ tcp_sk(sk)->snd_ssthresh = initial_ssthresh;
+ }
+
++static void bictcp_cwnd_event(struct sock *sk, enum tcp_ca_event event)
++{
++ if (event == CA_EVENT_TX_START) {
++ struct bictcp *ca = inet_csk_ca(sk);
++ u32 now = tcp_time_stamp;
++ s32 delta;
++
++ delta = now - tcp_sk(sk)->lsndtime;
++
++ /* We were application limited (idle) for a while.
++ * Shift epoch_start to keep cwnd growth to cubic curve.
++ */
++ if (ca->epoch_start && delta > 0) {
++ ca->epoch_start += delta;
++ if (after(ca->epoch_start, now))
++ ca->epoch_start = now;
++ }
++ return;
++ }
++}
++
+ /* calculate the cubic root of x using a table lookup followed by one
+ * Newton-Raphson iteration.
+ * Avg err ~= 0.195%
+@@ -450,6 +471,7 @@ static struct tcp_congestion_ops cubictcp __read_mostly = {
+ .cong_avoid = bictcp_cong_avoid,
+ .set_state = bictcp_state,
+ .undo_cwnd = bictcp_undo_cwnd,
++ .cwnd_event = bictcp_cwnd_event,
+ .pkts_acked = bictcp_acked,
+ .owner = THIS_MODULE,
+ .name = "cubic",
+diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
+index 2880f2ae99ab..a7027190f298 100644
+--- a/net/mac80211/sta_info.c
++++ b/net/mac80211/sta_info.c
+@@ -252,11 +252,11 @@ void sta_info_free(struct ieee80211_local *local, struct sta_info *sta)
+ }
+
+ /* Caller must hold local->sta_mtx */
+-static void sta_info_hash_add(struct ieee80211_local *local,
+- struct sta_info *sta)
++static int sta_info_hash_add(struct ieee80211_local *local,
++ struct sta_info *sta)
+ {
+- rhashtable_insert_fast(&local->sta_hash, &sta->hash_node,
+- sta_rht_params);
++ return rhashtable_insert_fast(&local->sta_hash, &sta->hash_node,
++ sta_rht_params);
+ }
+
+ static void sta_deliver_ps_frames(struct work_struct *wk)
+@@ -491,7 +491,9 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
+ set_sta_flag(sta, WLAN_STA_BLOCK_BA);
+
+ /* make the station visible */
+- sta_info_hash_add(local, sta);
++ err = sta_info_hash_add(local, sta);
++ if (err)
++ goto out_drop_sta;
+
+ list_add_tail_rcu(&sta->list, &local->sta_list);
+
+@@ -526,6 +528,7 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
+ out_remove:
+ sta_info_hash_del(local, sta);
+ list_del_rcu(&sta->list);
++ out_drop_sta:
+ local->num_sta--;
+ synchronize_net();
+ __cleanup_single_sta(sta);
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 90cf6168267e..cc1a7a4a7cbd 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4638,6 +4638,8 @@ enum {
+ ALC255_FIXUP_DELL_SPK_NOISE,
+ ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC280_FIXUP_HP_HEADSET_MIC,
++ ALC221_FIXUP_HP_FRONT_MIC,
++ ALC292_FIXUP_TPT460,
+ };
+
+ static const struct hda_fixup alc269_fixups[] = {
+@@ -5270,6 +5272,19 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC269_FIXUP_HEADSET_MIC,
+ },
++ [ALC221_FIXUP_HP_FRONT_MIC] = {
++ .type = HDA_FIXUP_PINS,
++ .v.pins = (const struct hda_pintbl[]) {
++ { 0x19, 0x02a19020 }, /* Front Mic */
++ { }
++ },
++ },
++ [ALC292_FIXUP_TPT460] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_tpt440_dock,
++ .chained = true,
++ .chain_id = ALC293_FIXUP_LENOVO_SPK_NOISE,
++ },
+ };
+
+ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+@@ -5374,6 +5389,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x103c, 0x2336, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+ SND_PCI_QUIRK(0x103c, 0x2337, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+ SND_PCI_QUIRK(0x103c, 0x221c, "HP EliteBook 755 G2", ALC280_FIXUP_HP_HEADSET_MIC),
++ SND_PCI_QUIRK(0x103c, 0x8256, "HP", ALC221_FIXUP_HP_FRONT_MIC),
+ SND_PCI_QUIRK(0x1043, 0x103f, "ASUS TX300", ALC282_FIXUP_ASUS_TX300),
+ SND_PCI_QUIRK(0x1043, 0x106d, "Asus K53BE", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x1043, 0x115d, "Asus 1015E", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+@@ -5421,7 +5437,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x2218, "Thinkpad X1 Carbon 2nd", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2223, "ThinkPad T550", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
+- SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
++ SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC292_FIXUP_TPT460),
+ SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
+ SND_PCI_QUIRK(0x17aa, 0x30e2, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
+ SND_PCI_QUIRK(0x17aa, 0x3902, "Lenovo E50-80", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
+@@ -5514,6 +5530,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ {.id = ALC283_FIXUP_SENSE_COMBO_JACK, .name = "alc283-sense-combo"},
+ {.id = ALC292_FIXUP_TPT440_DOCK, .name = "tpt440-dock"},
+ {.id = ALC292_FIXUP_TPT440, .name = "tpt440"},
++ {.id = ALC292_FIXUP_TPT460, .name = "tpt460"},
+ {}
+ };
+ #define ALC225_STANDARD_PINS \
+diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
+index ddca6547399b..1f8fb0d904e0 100644
+--- a/sound/usb/mixer_maps.c
++++ b/sound/usb/mixer_maps.c
+@@ -349,6 +349,16 @@ static struct usbmix_name_map bose_companion5_map[] = {
+ };
+
+ /*
++ * Dell usb dock with ALC4020 codec had a firmware problem where it got
++ * screwed up when zero volume is passed; just skip it as a workaround
++ */
++static const struct usbmix_name_map dell_alc4020_map[] = {
++ { 16, NULL },
++ { 19, NULL },
++ { 0 }
++};
++
++/*
+ * Control map entries
+ */
+
+@@ -431,6 +441,10 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
+ .map = aureon_51_2_map,
+ },
+ {
++ .id = USB_ID(0x0bda, 0x4014),
++ .map = dell_alc4020_map,
++ },
++ {
+ .id = USB_ID(0x0dba, 0x1000),
+ .map = mbox1_map,
+ },
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 5fb308d39e2a..5ad43cba860c 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1128,9 +1128,11 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ case USB_ID(0x045E, 0x076F): /* MS Lifecam HD-6000 */
+ case USB_ID(0x045E, 0x0772): /* MS Lifecam Studio */
+ case USB_ID(0x045E, 0x0779): /* MS Lifecam HD-3000 */
++ case USB_ID(0x047F, 0x0415): /* Plantronics BT-300 */
+ case USB_ID(0x047F, 0xAA05): /* Plantronics DA45 */
+ case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
+ case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
++ case USB_ID(0x1de7, 0x0014): /* Phoenix Audio TMX320 */
+ case USB_ID(0x21B4, 0x0081): /* AudioQuest DragonFly */
+ return true;
+ }
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-04-22 18:06 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-04-22 18:06 UTC (permalink / raw
To: gentoo-commits
commit: 53f63e4e0ebb503d06ae47030b9d66e1208de0e2
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Apr 22 18:05:58 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Apr 22 18:05:58 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=53f63e4e
Update for Gentoo specific distro patch. Select DEVPTS_MULTIPLE_INSTANCES when GENTOO_LINUX_INIT_SYSTEMD selected. Bug #579424.
4567_distro-Gentoo-Kconfig.patch | 39 +++++++++++++++++++++++++++++++--------
1 file changed, 31 insertions(+), 8 deletions(-)
diff --git a/4567_distro-Gentoo-Kconfig.patch b/4567_distro-Gentoo-Kconfig.patch
index 652e2a7..c7af596 100644
--- a/4567_distro-Gentoo-Kconfig.patch
+++ b/4567_distro-Gentoo-Kconfig.patch
@@ -1,5 +1,5 @@
---- a/Kconfig 2014-04-02 09:45:05.389224541 -0400
-+++ b/Kconfig 2014-04-02 09:45:39.269224273 -0400
+--- a/Kconfig
++++ b/Kconfig
@@ -8,4 +8,6 @@ config SRCARCH
string
option env="SRCARCH"
@@ -7,9 +7,9 @@
+source "distro/Kconfig"
+
source "arch/$SRCARCH/Kconfig"
---- 1969-12-31 19:00:00.000000000 -0500
-+++ b/distro/Kconfig 2014-04-02 09:57:03.539218861 -0400
-@@ -0,0 +1,108 @@
+--- /dev/null
++++ b/distro/Kconfig
+@@ -0,0 +1,131 @@
+menu "Gentoo Linux"
+
+config GENTOO_LINUX
@@ -30,7 +30,7 @@
+
+ depends on GENTOO_LINUX
+ default y if GENTOO_LINUX
-+
++
+ select DEVTMPFS
+ select TMPFS
+
@@ -51,7 +51,29 @@
+ boot process; if not available, it causes sysfs and udev to malfunction.
+
+ To ensure Gentoo Linux boots, it is best to leave this setting enabled;
-+ if you run a custom setup, you could consider whether to disable this.
++ if you run a custom setup, you could consider whether to disable this.
++
++config GENTOO_LINUX_PORTAGE
++ bool "Select options required by Portage features"
++
++ depends on GENTOO_LINUX
++ default y if GENTOO_LINUX
++
++ select CGROUPS
++ select NAMESPACES
++ select IPC_NS
++ select NET_NS
++
++ help
++ This enables options required by various Portage FEATURES.
++ Currently this selects:
++
++ CGROUPS (required for FEATURES=cgroup)
++ IPC_NS (required for FEATURES=ipc-sandbox)
++ NET_NS (required for FEATURES=network-sandbox)
++
++ It is highly recommended that you leave this enabled as these FEATURES
++ are, or will soon be, enabled by default.
+
+menu "Support for init systems, system and service managers"
+ visible if GENTOO_LINUX
@@ -87,12 +109,13 @@
+ select AUTOFS4_FS
+ select BLK_DEV_BSG
+ select CGROUPS
++ select DEVPTS_MULTIPLE_INSTANCES
+ select EPOLL
+ select FANOTIFY
+ select FHANDLE
+ select INOTIFY_USER
+ select NET
-+ select NET_NS
++ select NET_NS
+ select PROC_FS
+ select SIGNALFD
+ select SYSFS
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-04-20 11:23 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-04-20 11:23 UTC (permalink / raw
To: gentoo-commits
commit: c93f1513f37f80b6e6b333f00fae5bc62bbd4743
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Apr 20 11:23:36 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Apr 20 11:23:36 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=c93f1513
Linux patch 4.1.22
0000_README | 4 +
1021_linux-4.1.22.patch | 9212 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 9216 insertions(+)
diff --git a/0000_README b/0000_README
index cb424ff..3075177 100644
--- a/0000_README
+++ b/0000_README
@@ -127,6 +127,10 @@ Patch: 1020_linux-4.1.21.patch
From: http://www.kernel.org
Desc: Linux 4.1.21
+Patch: 1021_linux-4.1.22.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.22
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1021_linux-4.1.22.patch b/1021_linux-4.1.22.patch
new file mode 100644
index 0000000..8c18119
--- /dev/null
+++ b/1021_linux-4.1.22.patch
@@ -0,0 +1,9212 @@
+diff --git a/Documentation/filesystems/efivarfs.txt b/Documentation/filesystems/efivarfs.txt
+index c477af086e65..686a64bba775 100644
+--- a/Documentation/filesystems/efivarfs.txt
++++ b/Documentation/filesystems/efivarfs.txt
+@@ -14,3 +14,10 @@ filesystem.
+ efivarfs is typically mounted like this,
+
+ mount -t efivarfs none /sys/firmware/efi/efivars
++
++Due to the presence of numerous firmware bugs where removing non-standard
++UEFI variables causes the system firmware to fail to POST, efivarfs
++files that are not well-known standardized variables are created
++as immutable files. This doesn't prevent removal - "chattr -i" will work -
++but it does prevent this kind of failure from being accomplished
++accidentally.
+diff --git a/MAINTAINERS b/MAINTAINERS
+index d8afd2953678..0b51c8a3c627 100644
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -9533,9 +9533,11 @@ S: Maintained
+ F: drivers/net/ethernet/dlink/sundance.c
+
+ SUPERH
++M: Yoshinori Sato <ysato@users.sourceforge.jp>
++M: Rich Felker <dalias@libc.org>
+ L: linux-sh@vger.kernel.org
+ Q: http://patchwork.kernel.org/project/linux-sh/list/
+-S: Orphan
++S: Maintained
+ F: Documentation/sh/
+ F: arch/sh/
+ F: drivers/sh/
+diff --git a/Makefile b/Makefile
+index 79fab0d55218..7f4a4039fdd9 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 21
++SUBLEVEL = 22
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/armada-375.dtsi b/arch/arm/boot/dts/armada-375.dtsi
+index f076ff856d8b..07f61bb1697a 100644
+--- a/arch/arm/boot/dts/armada-375.dtsi
++++ b/arch/arm/boot/dts/armada-375.dtsi
+@@ -508,7 +508,7 @@
+ };
+
+ sata@a0000 {
+- compatible = "marvell,orion-sata";
++ compatible = "marvell,armada-370-sata";
+ reg = <0xa0000 0x5000>;
+ interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&gateclk 14>, <&gateclk 20>;
+diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h
+index c25ef3ec6d1f..e3789fb02c9c 100644
+--- a/arch/arm/include/asm/psci.h
++++ b/arch/arm/include/asm/psci.h
+@@ -37,7 +37,7 @@ struct psci_operations {
+ extern struct psci_operations psci_ops;
+ extern struct smp_operations psci_smp_ops;
+
+-#ifdef CONFIG_ARM_PSCI
++#if defined(CONFIG_SMP) && defined(CONFIG_ARM_PSCI)
+ int psci_init(void);
+ bool psci_smp_available(void);
+ #else
+diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
+index 8e2a7acb823b..1b9f0520dea9 100644
+--- a/arch/arm/mach-omap2/sleep34xx.S
++++ b/arch/arm/mach-omap2/sleep34xx.S
+@@ -436,12 +436,14 @@ skipl2dis:
+ and r1, #0x700
+ cmp r1, #0x300
+ beq l2_inv_gp
++ adr r0, l2_inv_api_params_offset
++ ldr r3, [r0]
++ add r3, r3, r0 @ r3 points to dummy parameters
+ mov r0, #40 @ set service ID for PPA
+ mov r12, r0 @ copy secure Service ID in r12
+ mov r1, #0 @ set task id for ROM code in r1
+ mov r2, #4 @ set some flags in r2, r6
+ mov r6, #0xff
+- adr r3, l2_inv_api_params @ r3 points to dummy parameters
+ dsb @ data write barrier
+ dmb @ data memory barrier
+ smc #1 @ call SMI monitor (smi #1)
+@@ -475,8 +477,8 @@ skipl2dis:
+ b logic_l1_restore
+
+ .align
+-l2_inv_api_params:
+- .word 0x1, 0x00
++l2_inv_api_params_offset:
++ .long l2_inv_api_params - .
+ l2_inv_gp:
+ /* Execute smi to invalidate L2 cache */
+ mov r12, #0x1 @ set up to invalidate L2
+@@ -531,6 +533,10 @@ l2dis_3630_offset:
+ l2dis_3630:
+ .word 0
+
++ .data
++l2_inv_api_params:
++ .word 0x1, 0x00
++
+ /*
+ * Internal functions
+ */
+diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
+index 3258174e6152..f462e6e4ce07 100644
+--- a/arch/arm64/Makefile
++++ b/arch/arm64/Makefile
+@@ -18,6 +18,8 @@ GZFLAGS :=-9
+ KBUILD_DEFCONFIG := defconfig
+
+ KBUILD_CFLAGS += -mgeneral-regs-only
++KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
++
+ ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
+ KBUILD_CPPFLAGS += -mbig-endian
+ AS += -EB
+diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
+index cf7319422768..526a9cb218d3 100644
+--- a/arch/arm64/include/asm/pgtable.h
++++ b/arch/arm64/include/asm/pgtable.h
+@@ -33,7 +33,7 @@
+ /*
+ * VMALLOC and SPARSEMEM_VMEMMAP ranges.
+ *
+- * VMEMAP_SIZE: allows the whole VA space to be covered by a struct page array
++ * VMEMAP_SIZE: allows the whole linear region to be covered by a struct page array
+ * (rounded up to PUD_SIZE).
+ * VMALLOC_START: beginning of the kernel VA space
+ * VMALLOC_END: extends to the available space below vmmemmap, PCI I/O space,
+@@ -43,7 +43,9 @@
+ #define VMALLOC_START (UL(0xffffffffffffffff) << VA_BITS)
+ #define VMALLOC_END (PAGE_OFFSET - PUD_SIZE - VMEMMAP_SIZE - SZ_64K)
+
+-#define vmemmap ((struct page *)(VMALLOC_END + SZ_64K))
++#define VMEMMAP_START (VMALLOC_END + SZ_64K)
++#define vmemmap ((struct page *)VMEMMAP_START - \
++ SECTION_ALIGN_DOWN(memstart_addr >> PAGE_SHIFT))
+
+ #define FIRST_USER_ADDRESS 0UL
+
+diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
+index ad87ce826cce..ae8f940152aa 100644
+--- a/arch/arm64/mm/init.c
++++ b/arch/arm64/mm/init.c
+@@ -312,8 +312,8 @@ void __init mem_init(void)
+ " .data : 0x%p" " - 0x%p" " (%6ld KB)\n",
+ MLG(VMALLOC_START, VMALLOC_END),
+ #ifdef CONFIG_SPARSEMEM_VMEMMAP
+- MLG((unsigned long)vmemmap,
+- (unsigned long)vmemmap + VMEMMAP_SIZE),
++ MLG(VMEMMAP_START,
++ VMEMMAP_START + VMEMMAP_SIZE),
+ MLM((unsigned long)virt_to_page(PAGE_OFFSET),
+ (unsigned long)virt_to_page(high_memory)),
+ #endif
+diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
+index 1d8b147282cf..bbf777c04cbf 100644
+--- a/arch/avr32/mach-at32ap/at32ap700x.c
++++ b/arch/avr32/mach-at32ap/at32ap700x.c
+@@ -1328,6 +1328,21 @@ static struct clk atmel_mci0_pclk = {
+ .index = 9,
+ };
+
++static bool at32_mci_dma_filter(struct dma_chan *chan, void *pdata)
++{
++ struct mci_dma_data *sl = pdata;
++
++ if (!sl)
++ return false;
++
++ if (find_slave_dev(sl) == chan->device->dev) {
++ chan->private = slave_data_ptr(sl);
++ return true;
++ }
++
++ return false;
++}
++
+ struct platform_device *__init
+ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
+ {
+@@ -1362,6 +1377,7 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
+ slave->sdata.dst_master = 0;
+
+ data->dma_slave = slave;
++ data->dma_filter = at32_mci_dma_filter;
+
+ if (platform_device_add_data(pdev, data,
+ sizeof(struct mci_platform_data)))
+diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
+index d0744cc77ea7..3cef551908f4 100644
+--- a/arch/mips/kernel/smp.c
++++ b/arch/mips/kernel/smp.c
+@@ -120,6 +120,7 @@ static inline void calculate_cpu_foreign_map(void)
+ cpumask_t temp_foreign_map;
+
+ /* Re-calculate the mask */
++ cpumask_clear(&temp_foreign_map);
+ for_each_online_cpu(i) {
+ core_present = 0;
+ for_each_cpu(k, &temp_foreign_map)
+diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
+index 59663af9315f..e4f7d4eed20c 100644
+--- a/arch/powerpc/kernel/module_64.c
++++ b/arch/powerpc/kernel/module_64.c
+@@ -335,7 +335,7 @@ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
+ if (syms[i].st_shndx == SHN_UNDEF) {
+ char *name = strtab + syms[i].st_name;
+ if (name[0] == '.')
+- memmove(name, name+1, strlen(name));
++ syms[i].st_name++;
+ }
+ }
+ }
+diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
+index a648338c434a..4e33fe339b3d 100644
+--- a/arch/s390/include/asm/pci.h
++++ b/arch/s390/include/asm/pci.h
+@@ -45,7 +45,7 @@ struct zpci_fmb {
+ u64 rpcit_ops;
+ u64 dma_rbytes;
+ u64 dma_wbytes;
+-} __packed __aligned(16);
++} __packed __aligned(64);
+
+ enum zpci_state {
+ ZPCI_FN_STATE_RESERVED,
+diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
+index 598f023cf8a6..50a79a5fc116 100644
+--- a/arch/s390/pci/pci.c
++++ b/arch/s390/pci/pci.c
+@@ -871,8 +871,11 @@ static inline int barsize(u8 size)
+
+ static int zpci_mem_init(void)
+ {
++ BUILD_BUG_ON(!is_power_of_2(__alignof__(struct zpci_fmb)) ||
++ __alignof__(struct zpci_fmb) < sizeof(struct zpci_fmb));
++
+ zdev_fmb_cache = kmem_cache_create("PCI_FMB_cache", sizeof(struct zpci_fmb),
+- 16, 0, NULL);
++ __alignof__(struct zpci_fmb), 0, NULL);
+ if (!zdev_fmb_cache)
+ goto error_zdev;
+
+diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
+index 29880c9b324e..e22e57298522 100644
+--- a/arch/um/drivers/mconsole_kern.c
++++ b/arch/um/drivers/mconsole_kern.c
+@@ -133,7 +133,7 @@ void mconsole_proc(struct mc_request *req)
+ ptr += strlen("proc");
+ ptr = skip_spaces(ptr);
+
+- file = file_open_root(mnt->mnt_root, mnt, ptr, O_RDONLY);
++ file = file_open_root(mnt->mnt_root, mnt, ptr, O_RDONLY, 0);
+ if (IS_ERR(file)) {
+ mconsole_reply(req, "Failed to open file", 1, 0);
+ printk(KERN_ERR "open /proc/%s: %ld\n", ptr, PTR_ERR(file));
+diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
+index 72bf2680f819..27e54946ef35 100644
+--- a/arch/x86/ia32/ia32entry.S
++++ b/arch/x86/ia32/ia32entry.S
+@@ -511,6 +511,7 @@ ENTRY(ia32_syscall)
+ * it is too small to ever cause noticeable irq latency.
+ */
+ PARAVIRT_ADJUST_EXCEPTION_FRAME
++ ASM_CLAC /* Do this early to minimize exposure */
+ SWAPGS
+ ENABLE_INTERRUPTS(CLBR_NONE)
+
+diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
+index 976b86a325e5..a197e15a0e49 100644
+--- a/arch/x86/include/asm/apic.h
++++ b/arch/x86/include/asm/apic.h
+@@ -640,8 +640,8 @@ static inline void entering_irq(void)
+
+ static inline void entering_ack_irq(void)
+ {
+- ack_APIC_irq();
+ entering_irq();
++ ack_APIC_irq();
+ }
+
+ static inline void exiting_irq(void)
+diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h
+index dc0f6ed35b08..5a2ed3ed2f26 100644
+--- a/arch/x86/include/asm/perf_event.h
++++ b/arch/x86/include/asm/perf_event.h
+@@ -159,6 +159,14 @@ struct x86_pmu_capability {
+ */
+ #define INTEL_PMC_IDX_FIXED_BTS (INTEL_PMC_IDX_FIXED + 16)
+
++#define GLOBAL_STATUS_COND_CHG BIT_ULL(63)
++#define GLOBAL_STATUS_BUFFER_OVF BIT_ULL(62)
++#define GLOBAL_STATUS_UNC_OVF BIT_ULL(61)
++#define GLOBAL_STATUS_ASIF BIT_ULL(60)
++#define GLOBAL_STATUS_COUNTERS_FROZEN BIT_ULL(59)
++#define GLOBAL_STATUS_LBRS_FROZEN BIT_ULL(58)
++#define GLOBAL_STATUS_TRACE_TOPAPMI BIT_ULL(55)
++
+ /*
+ * IBS cpuid feature detection
+ */
+diff --git a/arch/x86/include/asm/xen/hypervisor.h b/arch/x86/include/asm/xen/hypervisor.h
+index d866959e5685..d2ad00a42234 100644
+--- a/arch/x86/include/asm/xen/hypervisor.h
++++ b/arch/x86/include/asm/xen/hypervisor.h
+@@ -57,4 +57,6 @@ static inline bool xen_x2apic_para_available(void)
+ }
+ #endif
+
++extern void xen_set_iopl_mask(unsigned mask);
++
+ #endif /* _ASM_X86_XEN_HYPERVISOR_H */
+diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h
+index 3c6bb342a48f..06b407f79b24 100644
+--- a/arch/x86/include/uapi/asm/msr-index.h
++++ b/arch/x86/include/uapi/asm/msr-index.h
+@@ -72,6 +72,12 @@
+ #define MSR_LBR_CORE_FROM 0x00000040
+ #define MSR_LBR_CORE_TO 0x00000060
+
++#define MSR_LBR_INFO_0 0x00000dc0 /* ... 0xddf for _31 */
++#define LBR_INFO_MISPRED BIT_ULL(63)
++#define LBR_INFO_IN_TX BIT_ULL(62)
++#define LBR_INFO_ABORT BIT_ULL(61)
++#define LBR_INFO_CYCLES 0xffff
++
+ #define MSR_IA32_PEBS_ENABLE 0x000003f1
+ #define MSR_IA32_DS_AREA 0x00000600
+ #define MSR_IA32_PERF_CAPABILITIES 0x00000345
+diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c
+index 37dae792dbbe..589b3193f102 100644
+--- a/arch/x86/kernel/ioport.c
++++ b/arch/x86/kernel/ioport.c
+@@ -96,9 +96,14 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
+ SYSCALL_DEFINE1(iopl, unsigned int, level)
+ {
+ struct pt_regs *regs = current_pt_regs();
+- unsigned int old = (regs->flags >> 12) & 3;
+ struct thread_struct *t = ¤t->thread;
+
++ /*
++ * Careful: the IOPL bits in regs->flags are undefined under Xen PV
++ * and changing them has no effect.
++ */
++ unsigned int old = t->iopl >> X86_EFLAGS_IOPL_BIT;
++
+ if (level > 3)
+ return -EINVAL;
+ /* Trying to gain more privileges? */
+@@ -106,8 +111,9 @@ SYSCALL_DEFINE1(iopl, unsigned int, level)
+ if (!capable(CAP_SYS_RAWIO))
+ return -EPERM;
+ }
+- regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
+- t->iopl = level << 12;
++ regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) |
++ (level << X86_EFLAGS_IOPL_BIT);
++ t->iopl = level << X86_EFLAGS_IOPL_BIT;
+ set_iopl_mask(t->iopl);
+
+ return 0;
+diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
+index 58e02d938218..f7724a1d7de1 100644
+--- a/arch/x86/kernel/process_64.c
++++ b/arch/x86/kernel/process_64.c
+@@ -49,6 +49,7 @@
+ #include <asm/syscalls.h>
+ #include <asm/debugreg.h>
+ #include <asm/switch_to.h>
++#include <asm/xen/hypervisor.h>
+
+ asmlinkage extern void ret_from_fork(void);
+
+@@ -419,6 +420,17 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
+ task_thread_info(prev_p)->flags & _TIF_WORK_CTXSW_PREV))
+ __switch_to_xtra(prev_p, next_p, tss);
+
++#ifdef CONFIG_XEN
++ /*
++ * On Xen PV, IOPL bits in pt_regs->flags have no effect, and
++ * current_pt_regs()->flags may not match the current task's
++ * intended IOPL. We need to switch it manually.
++ */
++ if (unlikely(xen_pv_domain() &&
++ prev->iopl != next->iopl))
++ xen_set_iopl_mask(next->iopl);
++#endif
++
+ if (static_cpu_has_bug(X86_BUG_SYSRET_SS_ATTRS)) {
+ /*
+ * AMD CPUs have a misfeature: SYSRET sets the SS selector but
+diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
+index f90952f64e79..e6a4c57100ea 100644
+--- a/arch/x86/kvm/i8254.c
++++ b/arch/x86/kvm/i8254.c
+@@ -244,7 +244,7 @@ static void kvm_pit_ack_irq(struct kvm_irq_ack_notifier *kian)
+ * PIC is being reset. Handle it gracefully here
+ */
+ atomic_inc(&ps->pending);
+- else if (value > 0)
++ else if (value > 0 && ps->reinject)
+ /* in this case, we had multiple outstanding pit interrupts
+ * that we needed to inject. Reinject
+ */
+@@ -287,7 +287,9 @@ static void pit_do_work(struct kthread_work *work)
+ * last one has been acked.
+ */
+ spin_lock(&ps->inject_lock);
+- if (ps->irq_ack) {
++ if (!ps->reinject)
++ inject = 1;
++ else if (ps->irq_ack) {
+ ps->irq_ack = 0;
+ inject = 1;
+ }
+@@ -316,10 +318,10 @@ static enum hrtimer_restart pit_timer_fn(struct hrtimer *data)
+ struct kvm_kpit_state *ps = container_of(data, struct kvm_kpit_state, timer);
+ struct kvm_pit *pt = ps->kvm->arch.vpit;
+
+- if (ps->reinject || !atomic_read(&ps->pending)) {
++ if (ps->reinject)
+ atomic_inc(&ps->pending);
+- queue_kthread_work(&pt->worker, &pt->expired);
+- }
++
++ queue_kthread_work(&pt->worker, &pt->expired);
+
+ if (ps->is_periodic) {
+ hrtimer_add_expires_ns(&ps->timer, ps->period);
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 917148620f49..1274fac7c28f 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -7210,6 +7210,7 @@ static int handle_invept(struct kvm_vcpu *vcpu)
+ if (!(types & (1UL << type))) {
+ nested_vmx_failValid(vcpu,
+ VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
++ skip_emulated_instruction(vcpu);
+ return 1;
+ }
+
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 41a3fb4ed346..c228d8da1f8c 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -3732,13 +3732,13 @@ static int kvm_vm_ioctl_get_pit(struct kvm *kvm, struct kvm_pit_state *ps)
+
+ static int kvm_vm_ioctl_set_pit(struct kvm *kvm, struct kvm_pit_state *ps)
+ {
+- int r = 0;
+-
++ int i;
+ mutex_lock(&kvm->arch.vpit->pit_state.lock);
+ memcpy(&kvm->arch.vpit->pit_state, ps, sizeof(struct kvm_pit_state));
+- kvm_pit_load_count(kvm, 0, ps->channels[0].count, 0);
++ for (i = 0; i < 3; i++)
++ kvm_pit_load_count(kvm, i, ps->channels[i].count, 0);
+ mutex_unlock(&kvm->arch.vpit->pit_state.lock);
+- return r;
++ return 0;
+ }
+
+ static int kvm_vm_ioctl_get_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps)
+@@ -3757,6 +3757,7 @@ static int kvm_vm_ioctl_get_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps)
+ static int kvm_vm_ioctl_set_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps)
+ {
+ int r = 0, start = 0;
++ int i;
+ u32 prev_legacy, cur_legacy;
+ mutex_lock(&kvm->arch.vpit->pit_state.lock);
+ prev_legacy = kvm->arch.vpit->pit_state.flags & KVM_PIT_FLAGS_HPET_LEGACY;
+@@ -3766,7 +3767,8 @@ static int kvm_vm_ioctl_set_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps)
+ memcpy(&kvm->arch.vpit->pit_state.channels, &ps->channels,
+ sizeof(kvm->arch.vpit->pit_state.channels));
+ kvm->arch.vpit->pit_state.flags = ps->flags;
+- kvm_pit_load_count(kvm, 0, kvm->arch.vpit->pit_state.channels[0].count, start);
++ for (i = 0; i < 3; i++)
++ kvm_pit_load_count(kvm, i, kvm->arch.vpit->pit_state.channels[i].count, start);
+ mutex_unlock(&kvm->arch.vpit->pit_state.lock);
+ return r;
+ }
+diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
+index 9a2b7101ae8a..f16af96c60a2 100644
+--- a/arch/x86/pci/fixup.c
++++ b/arch/x86/pci/fixup.c
+@@ -553,3 +553,10 @@ static void twinhead_reserve_killing_zone(struct pci_dev *dev)
+ }
+ }
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x27B9, twinhead_reserve_killing_zone);
++
++static void pci_bdwep_bar(struct pci_dev *dev)
++{
++ dev->non_compliant_bars = 1;
++}
++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fa0, pci_bdwep_bar);
++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fc0, pci_bdwep_bar);
+diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
+index a10ed8915bf4..1ecae556d4ed 100644
+--- a/arch/x86/xen/enlighten.c
++++ b/arch/x86/xen/enlighten.c
+@@ -959,7 +959,7 @@ static void xen_load_sp0(struct tss_struct *tss,
+ tss->x86_tss.sp0 = thread->sp0;
+ }
+
+-static void xen_set_iopl_mask(unsigned mask)
++void xen_set_iopl_mask(unsigned mask)
+ {
+ struct physdev_set_iopl set_iopl;
+
+diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
+index 15a461e2a0ed..80eb62f853a7 100644
+--- a/arch/xtensa/kernel/head.S
++++ b/arch/xtensa/kernel/head.S
+@@ -128,7 +128,7 @@ ENTRY(_startup)
+ wsr a0, icountlevel
+
+ .set _index, 0
+- .rept XCHAL_NUM_DBREAK - 1
++ .rept XCHAL_NUM_DBREAK
+ wsr a0, SREG_DBREAKC + _index
+ .set _index, _index + 1
+ .endr
+diff --git a/arch/xtensa/mm/cache.c b/arch/xtensa/mm/cache.c
+index d75aa1476da7..1a804a2f9a5b 100644
+--- a/arch/xtensa/mm/cache.c
++++ b/arch/xtensa/mm/cache.c
+@@ -97,11 +97,11 @@ void clear_user_highpage(struct page *page, unsigned long vaddr)
+ unsigned long paddr;
+ void *kvaddr = coherent_kvaddr(page, TLBTEMP_BASE_1, vaddr, &paddr);
+
+- pagefault_disable();
++ preempt_disable();
+ kmap_invalidate_coherent(page, vaddr);
+ set_bit(PG_arch_1, &page->flags);
+ clear_page_alias(kvaddr, paddr);
+- pagefault_enable();
++ preempt_enable();
+ }
+
+ void copy_user_highpage(struct page *dst, struct page *src,
+@@ -113,11 +113,11 @@ void copy_user_highpage(struct page *dst, struct page *src,
+ void *src_vaddr = coherent_kvaddr(src, TLBTEMP_BASE_2, vaddr,
+ &src_paddr);
+
+- pagefault_disable();
++ preempt_disable();
+ kmap_invalidate_coherent(dst, vaddr);
+ set_bit(PG_arch_1, &dst->flags);
+ copy_page_alias(dst_vaddr, src_vaddr, dst_paddr, src_paddr);
+- pagefault_enable();
++ preempt_enable();
+ }
+
+ #endif /* DCACHE_WAY_SIZE > PAGE_SIZE */
+diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
+index 70cb408bc20d..92d785fefb6d 100644
+--- a/arch/xtensa/platforms/iss/console.c
++++ b/arch/xtensa/platforms/iss/console.c
+@@ -100,21 +100,23 @@ static void rs_poll(unsigned long priv)
+ {
+ struct tty_port *port = (struct tty_port *)priv;
+ int i = 0;
++ int rd = 1;
+ unsigned char c;
+
+ spin_lock(&timer_lock);
+
+ while (simc_poll(0)) {
+- simc_read(0, &c, 1);
++ rd = simc_read(0, &c, 1);
++ if (rd <= 0)
++ break;
+ tty_insert_flip_char(port, c, TTY_NORMAL);
+ i++;
+ }
+
+ if (i)
+ tty_flip_buffer_push(port);
+-
+-
+- mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
++ if (rd)
++ mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
+ spin_unlock(&timer_lock);
+ }
+
+diff --git a/block/blk-core.c b/block/blk-core.c
+index 03b5f8d77f37..7f29dc0237d1 100644
+--- a/block/blk-core.c
++++ b/block/blk-core.c
+@@ -2067,7 +2067,7 @@ int blk_insert_cloned_request(struct request_queue *q, struct request *rq)
+ if (q->mq_ops) {
+ if (blk_queue_io_stat(q))
+ blk_account_io_start(rq, true);
+- blk_mq_insert_request(rq, false, true, true);
++ blk_mq_insert_request(rq, false, true, false);
+ return 0;
+ }
+
+diff --git a/crypto/asymmetric_keys/Makefile b/crypto/asymmetric_keys/Makefile
+index e47fcd9ac5e8..cd1406f9b14a 100644
+--- a/crypto/asymmetric_keys/Makefile
++++ b/crypto/asymmetric_keys/Makefile
+@@ -15,15 +15,21 @@ obj-$(CONFIG_PUBLIC_KEY_ALGO_RSA) += rsa.o
+ obj-$(CONFIG_X509_CERTIFICATE_PARSER) += x509_key_parser.o
+ x509_key_parser-y := \
+ x509-asn1.o \
++ x509_akid-asn1.o \
+ x509_rsakey-asn1.o \
+ x509_cert_parser.o \
+ x509_public_key.o
+
+-$(obj)/x509_cert_parser.o: $(obj)/x509-asn1.h $(obj)/x509_rsakey-asn1.h
++$(obj)/x509_cert_parser.o: \
++ $(obj)/x509-asn1.h \
++ $(obj)/x509_akid-asn1.h \
++ $(obj)/x509_rsakey-asn1.h
+ $(obj)/x509-asn1.o: $(obj)/x509-asn1.c $(obj)/x509-asn1.h
++$(obj)/x509_akid-asn1.o: $(obj)/x509_akid-asn1.c $(obj)/x509_akid-asn1.h
+ $(obj)/x509_rsakey-asn1.o: $(obj)/x509_rsakey-asn1.c $(obj)/x509_rsakey-asn1.h
+
+ clean-files += x509-asn1.c x509-asn1.h
++clean-files += x509_akid-asn1.c x509_akid-asn1.h
+ clean-files += x509_rsakey-asn1.c x509_rsakey-asn1.h
+
+ #
+diff --git a/crypto/asymmetric_keys/pkcs7_trust.c b/crypto/asymmetric_keys/pkcs7_trust.c
+index 1d29376072da..0f6463b6692b 100644
+--- a/crypto/asymmetric_keys/pkcs7_trust.c
++++ b/crypto/asymmetric_keys/pkcs7_trust.c
+@@ -85,8 +85,8 @@ static int pkcs7_validate_trust_one(struct pkcs7_message *pkcs7,
+ /* No match - see if the root certificate has a signer amongst the
+ * trusted keys.
+ */
+- if (last && last->authority) {
+- key = x509_request_asymmetric_key(trust_keyring, last->authority,
++ if (last && last->akid_skid) {
++ key = x509_request_asymmetric_key(trust_keyring, last->akid_skid,
+ false);
+ if (!IS_ERR(key)) {
+ x509 = last;
+diff --git a/crypto/asymmetric_keys/pkcs7_verify.c b/crypto/asymmetric_keys/pkcs7_verify.c
+index cd455450b069..a4d083f7e9e1 100644
+--- a/crypto/asymmetric_keys/pkcs7_verify.c
++++ b/crypto/asymmetric_keys/pkcs7_verify.c
+@@ -187,11 +187,11 @@ static int pkcs7_verify_sig_chain(struct pkcs7_message *pkcs7,
+ goto maybe_missing_crypto_in_x509;
+
+ pr_debug("- issuer %s\n", x509->issuer);
+- if (x509->authority)
++ if (x509->akid_skid)
+ pr_debug("- authkeyid %*phN\n",
+- x509->authority->len, x509->authority->data);
++ x509->akid_skid->len, x509->akid_skid->data);
+
+- if (!x509->authority ||
++ if (!x509->akid_skid ||
+ strcmp(x509->subject, x509->issuer) == 0) {
+ /* If there's no authority certificate specified, then
+ * the certificate must be self-signed and is the root
+@@ -216,13 +216,13 @@ static int pkcs7_verify_sig_chain(struct pkcs7_message *pkcs7,
+ * list to see if the next one is there.
+ */
+ pr_debug("- want %*phN\n",
+- x509->authority->len, x509->authority->data);
++ x509->akid_skid->len, x509->akid_skid->data);
+ for (p = pkcs7->certs; p; p = p->next) {
+ if (!p->skid)
+ continue;
+ pr_debug("- cmp [%u] %*phN\n",
+ p->index, p->skid->len, p->skid->data);
+- if (asymmetric_key_id_same(p->skid, x509->authority))
++ if (asymmetric_key_id_same(p->skid, x509->akid_skid))
+ goto found_issuer;
+ }
+
+@@ -338,8 +338,6 @@ int pkcs7_verify(struct pkcs7_message *pkcs7)
+ ret = x509_get_sig_params(x509);
+ if (ret < 0)
+ return ret;
+- pr_debug("X.509[%u] %*phN\n",
+- n, x509->authority->len, x509->authority->data);
+ }
+
+ for (sinfo = pkcs7->signed_infos; sinfo; sinfo = sinfo->next) {
+diff --git a/crypto/asymmetric_keys/x509_akid.asn1 b/crypto/asymmetric_keys/x509_akid.asn1
+new file mode 100644
+index 000000000000..1a33231a75a8
+--- /dev/null
++++ b/crypto/asymmetric_keys/x509_akid.asn1
+@@ -0,0 +1,35 @@
++-- X.509 AuthorityKeyIdentifier
++-- rfc5280 section 4.2.1.1
++
++AuthorityKeyIdentifier ::= SEQUENCE {
++ keyIdentifier [0] IMPLICIT KeyIdentifier OPTIONAL,
++ authorityCertIssuer [1] IMPLICIT GeneralNames OPTIONAL,
++ authorityCertSerialNumber [2] IMPLICIT CertificateSerialNumber OPTIONAL
++ }
++
++KeyIdentifier ::= OCTET STRING ({ x509_akid_note_kid })
++
++CertificateSerialNumber ::= INTEGER ({ x509_akid_note_serial })
++
++GeneralNames ::= SEQUENCE OF GeneralName
++
++GeneralName ::= CHOICE {
++ otherName [0] ANY,
++ rfc822Name [1] IA5String,
++ dNSName [2] IA5String,
++ x400Address [3] ANY,
++ directoryName [4] Name ({ x509_akid_note_name }),
++ ediPartyName [5] ANY,
++ uniformResourceIdentifier [6] IA5String,
++ iPAddress [7] OCTET STRING,
++ registeredID [8] OBJECT IDENTIFIER
++ }
++
++Name ::= SEQUENCE OF RelativeDistinguishedName
++
++RelativeDistinguishedName ::= SET OF AttributeValueAssertion
++
++AttributeValueAssertion ::= SEQUENCE {
++ attributeType OBJECT IDENTIFIER ({ x509_note_OID }),
++ attributeValue ANY ({ x509_extract_name_segment })
++ }
+diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
+index a668d90302d3..1995d6d962f5 100644
+--- a/crypto/asymmetric_keys/x509_cert_parser.c
++++ b/crypto/asymmetric_keys/x509_cert_parser.c
+@@ -18,6 +18,7 @@
+ #include "public_key.h"
+ #include "x509_parser.h"
+ #include "x509-asn1.h"
++#include "x509_akid-asn1.h"
+ #include "x509_rsakey-asn1.h"
+
+ struct x509_parse_context {
+@@ -35,6 +36,10 @@ struct x509_parse_context {
+ u16 o_offset; /* Offset of organizationName (O) */
+ u16 cn_offset; /* Offset of commonName (CN) */
+ u16 email_offset; /* Offset of emailAddress */
++ unsigned raw_akid_size;
++ const void *raw_akid; /* Raw authorityKeyId in ASN.1 */
++ const void *akid_raw_issuer; /* Raw directoryName in authorityKeyId */
++ unsigned akid_raw_issuer_size;
+ };
+
+ /*
+@@ -48,7 +53,8 @@ void x509_free_certificate(struct x509_certificate *cert)
+ kfree(cert->subject);
+ kfree(cert->id);
+ kfree(cert->skid);
+- kfree(cert->authority);
++ kfree(cert->akid_id);
++ kfree(cert->akid_skid);
+ kfree(cert->sig.digest);
+ mpi_free(cert->sig.rsa.s);
+ kfree(cert);
+@@ -85,6 +91,18 @@ struct x509_certificate *x509_cert_parse(const void *data, size_t datalen)
+ if (ret < 0)
+ goto error_decode;
+
++ /* Decode the AuthorityKeyIdentifier */
++ if (ctx->raw_akid) {
++ pr_devel("AKID: %u %*phN\n",
++ ctx->raw_akid_size, ctx->raw_akid_size, ctx->raw_akid);
++ ret = asn1_ber_decoder(&x509_akid_decoder, ctx,
++ ctx->raw_akid, ctx->raw_akid_size);
++ if (ret < 0) {
++ pr_warn("Couldn't decode AuthKeyIdentifier\n");
++ goto error_decode;
++ }
++ }
++
+ /* Decode the public key */
+ ret = asn1_ber_decoder(&x509_rsakey_decoder, ctx,
+ ctx->key, ctx->key_size);
+@@ -422,7 +440,6 @@ int x509_process_extension(void *context, size_t hdrlen,
+ struct x509_parse_context *ctx = context;
+ struct asymmetric_key_id *kid;
+ const unsigned char *v = value;
+- int i;
+
+ pr_debug("Extension: %u\n", ctx->last_oid);
+
+@@ -449,117 +466,113 @@ int x509_process_extension(void *context, size_t hdrlen,
+
+ if (ctx->last_oid == OID_authorityKeyIdentifier) {
+ /* Get hold of the CA key fingerprint */
+- if (ctx->cert->authority || vlen < 5)
+- return -EBADMSG;
+-
+- /* Authority Key Identifier must be a Constructed SEQUENCE */
+- if (v[0] != (ASN1_SEQ | (ASN1_CONS << 5)))
+- return -EBADMSG;
+-
+- /* Authority Key Identifier is not indefinite length */
+- if (unlikely(vlen == ASN1_INDEFINITE_LENGTH))
+- return -EBADMSG;
+-
+- if (vlen < ASN1_INDEFINITE_LENGTH) {
+- /* Short Form length */
+- if (v[1] != vlen - 2 ||
+- v[2] != SEQ_TAG_KEYID ||
+- v[3] > vlen - 4)
+- return -EBADMSG;
+-
+- vlen = v[3];
+- v += 4;
+- } else {
+- /* Long Form length */
+- size_t seq_len = 0;
+- size_t sub = v[1] - ASN1_INDEFINITE_LENGTH;
+-
+- if (sub > 2)
+- return -EBADMSG;
+-
+- /* calculate the length from subsequent octets */
+- v += 2;
+- for (i = 0; i < sub; i++) {
+- seq_len <<= 8;
+- seq_len |= v[i];
+- }
+-
+- if (seq_len != vlen - 2 - sub ||
+- v[sub] != SEQ_TAG_KEYID ||
+- v[sub + 1] > vlen - 4 - sub)
+- return -EBADMSG;
+-
+- vlen = v[sub + 1];
+- v += (sub + 2);
+- }
+-
+- kid = asymmetric_key_generate_id(ctx->cert->raw_issuer,
+- ctx->cert->raw_issuer_size,
+- v, vlen);
+- if (IS_ERR(kid))
+- return PTR_ERR(kid);
+- pr_debug("authkeyid %*phN\n", kid->len, kid->data);
+- ctx->cert->authority = kid;
++ ctx->raw_akid = v;
++ ctx->raw_akid_size = vlen;
+ return 0;
+ }
+
+ return 0;
+ }
+
+-/*
+- * Record a certificate time.
++/**
++ * x509_decode_time - Decode an X.509 time ASN.1 object
++ * @_t: The time to fill in
++ * @hdrlen: The length of the object header
++ * @tag: The object tag
++ * @value: The object value
++ * @vlen: The size of the object value
++ *
++ * Decode an ASN.1 universal time or generalised time field into a struct the
++ * kernel can handle and check it for validity. The time is decoded thus:
++ *
++ * [RFC5280 §4.1.2.5]
++ * CAs conforming to this profile MUST always encode certificate validity
++ * dates through the year 2049 as UTCTime; certificate validity dates in
++ * 2050 or later MUST be encoded as GeneralizedTime. Conforming
++ * applications MUST be able to process validity dates that are encoded in
++ * either UTCTime or GeneralizedTime.
+ */
+-static int x509_note_time(struct tm *tm, size_t hdrlen,
+- unsigned char tag,
+- const unsigned char *value, size_t vlen)
++int x509_decode_time(time64_t *_t, size_t hdrlen,
++ unsigned char tag,
++ const unsigned char *value, size_t vlen)
+ {
++ static const unsigned char month_lengths[] = { 31, 28, 31, 30, 31, 30,
++ 31, 31, 30, 31, 30, 31 };
+ const unsigned char *p = value;
++ unsigned year, mon, day, hour, min, sec, mon_len;
+
+-#define dec2bin(X) ((X) - '0')
++#define dec2bin(X) ({ unsigned char x = (X) - '0'; if (x > 9) goto invalid_time; x; })
+ #define DD2bin(P) ({ unsigned x = dec2bin(P[0]) * 10 + dec2bin(P[1]); P += 2; x; })
+
+ if (tag == ASN1_UNITIM) {
+ /* UTCTime: YYMMDDHHMMSSZ */
+ if (vlen != 13)
+ goto unsupported_time;
+- tm->tm_year = DD2bin(p);
+- if (tm->tm_year >= 50)
+- tm->tm_year += 1900;
++ year = DD2bin(p);
++ if (year >= 50)
++ year += 1900;
+ else
+- tm->tm_year += 2000;
++ year += 2000;
+ } else if (tag == ASN1_GENTIM) {
+ /* GenTime: YYYYMMDDHHMMSSZ */
+ if (vlen != 15)
+ goto unsupported_time;
+- tm->tm_year = DD2bin(p) * 100 + DD2bin(p);
++ year = DD2bin(p) * 100 + DD2bin(p);
++ if (year >= 1950 && year <= 2049)
++ goto invalid_time;
+ } else {
+ goto unsupported_time;
+ }
+
+- tm->tm_year -= 1900;
+- tm->tm_mon = DD2bin(p) - 1;
+- tm->tm_mday = DD2bin(p);
+- tm->tm_hour = DD2bin(p);
+- tm->tm_min = DD2bin(p);
+- tm->tm_sec = DD2bin(p);
++ mon = DD2bin(p);
++ day = DD2bin(p);
++ hour = DD2bin(p);
++ min = DD2bin(p);
++ sec = DD2bin(p);
+
+ if (*p != 'Z')
+ goto unsupported_time;
+
++ mon_len = month_lengths[mon];
++ if (mon == 2) {
++ if (year % 4 == 0) {
++ mon_len = 29;
++ if (year % 100 == 0) {
++ mon_len = 28;
++ if (year % 400 == 0)
++ mon_len = 29;
++ }
++ }
++ }
++
++ if (year < 1970 ||
++ mon < 1 || mon > 12 ||
++ day < 1 || day > mon_len ||
++ hour < 0 || hour > 23 ||
++ min < 0 || min > 59 ||
++ sec < 0 || sec > 59)
++ goto invalid_time;
++
++ *_t = mktime64(year, mon, day, hour, min, sec);
+ return 0;
+
+ unsupported_time:
+- pr_debug("Got unsupported time [tag %02x]: '%*.*s'\n",
+- tag, (int)vlen, (int)vlen, value);
++ pr_debug("Got unsupported time [tag %02x]: '%*phN'\n",
++ tag, (int)vlen, value);
++ return -EBADMSG;
++invalid_time:
++ pr_debug("Got invalid time [tag %02x]: '%*phN'\n",
++ tag, (int)vlen, value);
+ return -EBADMSG;
+ }
++EXPORT_SYMBOL_GPL(x509_decode_time);
+
+ int x509_note_not_before(void *context, size_t hdrlen,
+ unsigned char tag,
+ const void *value, size_t vlen)
+ {
+ struct x509_parse_context *ctx = context;
+- return x509_note_time(&ctx->cert->valid_from, hdrlen, tag, value, vlen);
++ return x509_decode_time(&ctx->cert->valid_from, hdrlen, tag, value, vlen);
+ }
+
+ int x509_note_not_after(void *context, size_t hdrlen,
+@@ -567,5 +580,73 @@ int x509_note_not_after(void *context, size_t hdrlen,
+ const void *value, size_t vlen)
+ {
+ struct x509_parse_context *ctx = context;
+- return x509_note_time(&ctx->cert->valid_to, hdrlen, tag, value, vlen);
++ return x509_decode_time(&ctx->cert->valid_to, hdrlen, tag, value, vlen);
++}
++
++/*
++ * Note a key identifier-based AuthorityKeyIdentifier
++ */
++int x509_akid_note_kid(void *context, size_t hdrlen,
++ unsigned char tag,
++ const void *value, size_t vlen)
++{
++ struct x509_parse_context *ctx = context;
++ struct asymmetric_key_id *kid;
++
++ pr_debug("AKID: keyid: %*phN\n", (int)vlen, value);
++
++ if (ctx->cert->akid_skid)
++ return 0;
++
++ kid = asymmetric_key_generate_id(ctx->cert->raw_issuer,
++ ctx->cert->raw_issuer_size,
++ value, vlen);
++ if (IS_ERR(kid))
++ return PTR_ERR(kid);
++ pr_debug("authkeyid %*phN\n", kid->len, kid->data);
++ ctx->cert->akid_skid = kid;
++ return 0;
++}
++
++/*
++ * Note a directoryName in an AuthorityKeyIdentifier
++ */
++int x509_akid_note_name(void *context, size_t hdrlen,
++ unsigned char tag,
++ const void *value, size_t vlen)
++{
++ struct x509_parse_context *ctx = context;
++
++ pr_debug("AKID: name: %*phN\n", (int)vlen, value);
++
++ ctx->akid_raw_issuer = value;
++ ctx->akid_raw_issuer_size = vlen;
++ return 0;
++}
++
++/*
++ * Note a serial number in an AuthorityKeyIdentifier
++ */
++int x509_akid_note_serial(void *context, size_t hdrlen,
++ unsigned char tag,
++ const void *value, size_t vlen)
++{
++ struct x509_parse_context *ctx = context;
++ struct asymmetric_key_id *kid;
++
++ pr_debug("AKID: serial: %*phN\n", (int)vlen, value);
++
++ if (!ctx->akid_raw_issuer || ctx->cert->akid_id)
++ return 0;
++
++ kid = asymmetric_key_generate_id(value,
++ vlen,
++ ctx->akid_raw_issuer,
++ ctx->akid_raw_issuer_size);
++ if (IS_ERR(kid))
++ return PTR_ERR(kid);
++
++ pr_debug("authkeyid %*phN\n", kid->len, kid->data);
++ ctx->cert->akid_id = kid;
++ return 0;
+ }
+diff --git a/crypto/asymmetric_keys/x509_parser.h b/crypto/asymmetric_keys/x509_parser.h
+index 3dfe6b5d6f0b..1de01eaec884 100644
+--- a/crypto/asymmetric_keys/x509_parser.h
++++ b/crypto/asymmetric_keys/x509_parser.h
+@@ -19,11 +19,12 @@ struct x509_certificate {
+ struct public_key_signature sig; /* Signature parameters */
+ char *issuer; /* Name of certificate issuer */
+ char *subject; /* Name of certificate subject */
+- struct asymmetric_key_id *id; /* Serial number + issuer */
++ struct asymmetric_key_id *id; /* Issuer + Serial number */
+ struct asymmetric_key_id *skid; /* Subject + subjectKeyId (optional) */
+- struct asymmetric_key_id *authority; /* Authority key identifier (optional) */
+- struct tm valid_from;
+- struct tm valid_to;
++ struct asymmetric_key_id *akid_id; /* CA AuthKeyId matching ->id (optional) */
++ struct asymmetric_key_id *akid_skid; /* CA AuthKeyId matching ->skid (optional) */
++ time64_t valid_from;
++ time64_t valid_to;
+ const void *tbs; /* Signed data */
+ unsigned tbs_size; /* Size of signed data */
+ unsigned raw_sig_size; /* Size of sigature */
+@@ -48,6 +49,9 @@ struct x509_certificate {
+ */
+ extern void x509_free_certificate(struct x509_certificate *cert);
+ extern struct x509_certificate *x509_cert_parse(const void *data, size_t datalen);
++extern int x509_decode_time(time64_t *_t, size_t hdrlen,
++ unsigned char tag,
++ const unsigned char *value, size_t vlen);
+
+ /*
+ * x509_public_key.c
+diff --git a/crypto/asymmetric_keys/x509_public_key.c b/crypto/asymmetric_keys/x509_public_key.c
+index 4c850ac474e2..727752851dcf 100644
+--- a/crypto/asymmetric_keys/x509_public_key.c
++++ b/crypto/asymmetric_keys/x509_public_key.c
+@@ -227,10 +227,10 @@ static int x509_validate_trust(struct x509_certificate *cert,
+ if (!trust_keyring)
+ return -EOPNOTSUPP;
+
+- if (ca_keyid && !asymmetric_key_id_partial(cert->authority, ca_keyid))
++ if (ca_keyid && !asymmetric_key_id_partial(cert->akid_skid, ca_keyid))
+ return -EPERM;
+
+- key = x509_request_asymmetric_key(trust_keyring, cert->authority,
++ key = x509_request_asymmetric_key(trust_keyring, cert->akid_skid,
+ false);
+ if (!IS_ERR(key)) {
+ if (!use_builtin_keys
+@@ -271,14 +271,7 @@ static int x509_key_preparse(struct key_preparsed_payload *prep)
+ }
+
+ pr_devel("Cert Key Algo: %s\n", pkey_algo_name[cert->pub->pkey_algo]);
+- pr_devel("Cert Valid From: %04ld-%02d-%02d %02d:%02d:%02d\n",
+- cert->valid_from.tm_year + 1900, cert->valid_from.tm_mon + 1,
+- cert->valid_from.tm_mday, cert->valid_from.tm_hour,
+- cert->valid_from.tm_min, cert->valid_from.tm_sec);
+- pr_devel("Cert Valid To: %04ld-%02d-%02d %02d:%02d:%02d\n",
+- cert->valid_to.tm_year + 1900, cert->valid_to.tm_mon + 1,
+- cert->valid_to.tm_mday, cert->valid_to.tm_hour,
+- cert->valid_to.tm_min, cert->valid_to.tm_sec);
++ pr_devel("Cert Valid period: %lld-%lld\n", cert->valid_from, cert->valid_to);
+ pr_devel("Cert Signature: %s + %s\n",
+ pkey_algo_name[cert->sig.pkey_algo],
+ hash_algo_name[cert->sig.pkey_hash_algo]);
+@@ -287,8 +280,8 @@ static int x509_key_preparse(struct key_preparsed_payload *prep)
+ cert->pub->id_type = PKEY_ID_X509;
+
+ /* Check the signature on the key if it appears to be self-signed */
+- if (!cert->authority ||
+- asymmetric_key_id_same(cert->skid, cert->authority)) {
++ if (!cert->akid_skid ||
++ asymmetric_key_id_same(cert->skid, cert->akid_skid)) {
+ ret = x509_check_signature(cert->pub, cert); /* self-signed */
+ if (ret < 0)
+ goto error_free_cert;
+diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
+index c42feb2bacd0..33e3db548a29 100644
+--- a/drivers/acpi/video_detect.c
++++ b/drivers/acpi/video_detect.c
+@@ -166,14 +166,6 @@ static struct dmi_system_id video_detect_dmi_table[] = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
+ },
+ },
+- {
+- .callback = video_detect_force_vendor,
+- .ident = "Dell Inspiron 5737",
+- .matches = {
+- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5737"),
+- },
+- },
+ { },
+ };
+
+diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
+index 3bd7ca9853a8..2af8b29656af 100644
+--- a/drivers/block/mtip32xx/mtip32xx.c
++++ b/drivers/block/mtip32xx/mtip32xx.c
+@@ -705,7 +705,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
+ fail_reason = "thermal shutdown";
+ }
+ if (buf[288] == 0xBF) {
+- set_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag);
++ set_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag);
+ dev_info(&dd->pdev->dev,
+ "Drive indicates rebuild has failed. Secure erase required.\n");
+ fail_all_ncq_cmds = 1;
+@@ -896,6 +896,10 @@ static inline irqreturn_t mtip_handle_irq(struct driver_data *data)
+
+ /* Acknowledge the interrupt status on the port.*/
+ port_stat = readl(port->mmio + PORT_IRQ_STAT);
++ if (unlikely(port_stat == 0xFFFFFFFF)) {
++ mtip_check_surprise_removal(dd->pdev);
++ return IRQ_HANDLED;
++ }
+ writel(port_stat, port->mmio + PORT_IRQ_STAT);
+
+ /* Demux port status */
+@@ -991,15 +995,11 @@ static bool mtip_pause_ncq(struct mtip_port *port,
+ reply = port->rxfis + RX_FIS_D2H_REG;
+ task_file_data = readl(port->mmio+PORT_TFDATA);
+
+- if (fis->command == ATA_CMD_SEC_ERASE_UNIT)
+- clear_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag);
+-
+ if ((task_file_data & 1))
+ return false;
+
+ if (fis->command == ATA_CMD_SEC_ERASE_PREP) {
+ set_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags);
+- set_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag);
+ port->ic_pause_timer = jiffies;
+ return true;
+ } else if ((fis->command == ATA_CMD_DOWNLOAD_MICRO) &&
+@@ -1011,6 +1011,8 @@ static bool mtip_pause_ncq(struct mtip_port *port,
+ ((fis->command == 0xFC) &&
+ (fis->features == 0x27 || fis->features == 0x72 ||
+ fis->features == 0x62 || fis->features == 0x26))) {
++ clear_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag);
++ clear_bit(MTIP_DDF_REBUILD_FAILED_BIT, &port->dd->dd_flag);
+ /* Com reset after secure erase or lowlevel format */
+ mtip_restart_port(port);
+ return false;
+@@ -1102,6 +1104,7 @@ static int mtip_exec_internal_command(struct mtip_port *port,
+ struct mtip_cmd *int_cmd;
+ struct driver_data *dd = port->dd;
+ int rv = 0;
++ unsigned long start;
+
+ /* Make sure the buffer is 8 byte aligned. This is asic specific. */
+ if (buffer & 0x00000007) {
+@@ -1164,6 +1167,8 @@ static int mtip_exec_internal_command(struct mtip_port *port,
+ /* Populate the command header */
+ int_cmd->command_header->byte_count = 0;
+
++ start = jiffies;
++
+ /* Issue the command to the hardware */
+ mtip_issue_non_ncq_command(port, MTIP_TAG_INTERNAL);
+
+@@ -1172,10 +1177,12 @@ static int mtip_exec_internal_command(struct mtip_port *port,
+ if ((rv = wait_for_completion_interruptible_timeout(
+ &wait,
+ msecs_to_jiffies(timeout))) <= 0) {
++
+ if (rv == -ERESTARTSYS) { /* interrupted */
+ dev_err(&dd->pdev->dev,
+- "Internal command [%02X] was interrupted after %lu ms\n",
+- fis->command, timeout);
++ "Internal command [%02X] was interrupted after %u ms\n",
++ fis->command,
++ jiffies_to_msecs(jiffies - start));
+ rv = -EINTR;
+ goto exec_ic_exit;
+ } else if (rv == 0) /* timeout */
+@@ -2780,48 +2787,6 @@ static void mtip_hw_debugfs_exit(struct driver_data *dd)
+ debugfs_remove_recursive(dd->dfs_node);
+ }
+
+-static int mtip_free_orphan(struct driver_data *dd)
+-{
+- struct kobject *kobj;
+-
+- if (dd->bdev) {
+- if (dd->bdev->bd_holders >= 1)
+- return -2;
+-
+- bdput(dd->bdev);
+- dd->bdev = NULL;
+- }
+-
+- mtip_hw_debugfs_exit(dd);
+-
+- spin_lock(&rssd_index_lock);
+- ida_remove(&rssd_index_ida, dd->index);
+- spin_unlock(&rssd_index_lock);
+-
+- if (!test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag) &&
+- test_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag)) {
+- put_disk(dd->disk);
+- } else {
+- if (dd->disk) {
+- kobj = kobject_get(&disk_to_dev(dd->disk)->kobj);
+- if (kobj) {
+- mtip_hw_sysfs_exit(dd, kobj);
+- kobject_put(kobj);
+- }
+- del_gendisk(dd->disk);
+- dd->disk = NULL;
+- }
+- if (dd->queue) {
+- dd->queue->queuedata = NULL;
+- blk_cleanup_queue(dd->queue);
+- blk_mq_free_tag_set(&dd->tags);
+- dd->queue = NULL;
+- }
+- }
+- kfree(dd);
+- return 0;
+-}
+-
+ /*
+ * Perform any init/resume time hardware setup
+ *
+@@ -2969,7 +2934,6 @@ static int mtip_service_thread(void *data)
+ unsigned long slot, slot_start, slot_wrap;
+ unsigned int num_cmd_slots = dd->slot_groups * 32;
+ struct mtip_port *port = dd->port;
+- int ret;
+
+ while (1) {
+ if (kthread_should_stop() ||
+@@ -3055,18 +3019,6 @@ restart_eh:
+ if (kthread_should_stop())
+ goto st_out;
+ }
+-
+- while (1) {
+- ret = mtip_free_orphan(dd);
+- if (!ret) {
+- /* NOTE: All data structures are invalid, do not
+- * access any here */
+- return 0;
+- }
+- msleep_interruptible(1000);
+- if (kthread_should_stop())
+- goto st_out;
+- }
+ st_out:
+ return 0;
+ }
+@@ -3178,7 +3130,7 @@ static int mtip_hw_get_identify(struct driver_data *dd)
+ if (buf[288] == 0xBF) {
+ dev_info(&dd->pdev->dev,
+ "Drive indicates rebuild has failed.\n");
+- /* TODO */
++ set_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag);
+ }
+ }
+
+@@ -3352,20 +3304,25 @@ out1:
+ return rv;
+ }
+
+-static void mtip_standby_drive(struct driver_data *dd)
++static int mtip_standby_drive(struct driver_data *dd)
+ {
+- if (dd->sr)
+- return;
++ int rv = 0;
+
++ if (dd->sr || !dd->port)
++ return -ENODEV;
+ /*
+ * Send standby immediate (E0h) to the drive so that it
+ * saves its state.
+ */
+ if (!test_bit(MTIP_PF_REBUILD_BIT, &dd->port->flags) &&
+- !test_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag))
+- if (mtip_standby_immediate(dd->port))
++ !test_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag) &&
++ !test_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag)) {
++ rv = mtip_standby_immediate(dd->port);
++ if (rv)
+ dev_warn(&dd->pdev->dev,
+ "STANDBY IMMEDIATE failed\n");
++ }
++ return rv;
+ }
+
+ /*
+@@ -3394,6 +3351,7 @@ static int mtip_hw_exit(struct driver_data *dd)
+ /* Release the IRQ. */
+ irq_set_affinity_hint(dd->pdev->irq, NULL);
+ devm_free_irq(&dd->pdev->dev, dd->pdev->irq, dd);
++ msleep(1000);
+
+ /* Free dma regions */
+ mtip_dma_free(dd);
+@@ -3422,8 +3380,7 @@ static int mtip_hw_shutdown(struct driver_data *dd)
+ * Send standby immediate (E0h) to the drive so that it
+ * saves its state.
+ */
+- if (!dd->sr && dd->port)
+- mtip_standby_immediate(dd->port);
++ mtip_standby_drive(dd);
+
+ return 0;
+ }
+@@ -3446,7 +3403,7 @@ static int mtip_hw_suspend(struct driver_data *dd)
+ * Send standby immediate (E0h) to the drive
+ * so that it saves its state.
+ */
+- if (mtip_standby_immediate(dd->port) != 0) {
++ if (mtip_standby_drive(dd) != 0) {
+ dev_err(&dd->pdev->dev,
+ "Failed standby-immediate command\n");
+ return -EFAULT;
+@@ -3684,6 +3641,28 @@ static int mtip_block_getgeo(struct block_device *dev,
+ return 0;
+ }
+
++static int mtip_block_open(struct block_device *dev, fmode_t mode)
++{
++ struct driver_data *dd;
++
++ if (dev && dev->bd_disk) {
++ dd = (struct driver_data *) dev->bd_disk->private_data;
++
++ if (dd) {
++ if (test_bit(MTIP_DDF_REMOVAL_BIT,
++ &dd->dd_flag)) {
++ return -ENODEV;
++ }
++ return 0;
++ }
++ }
++ return -ENODEV;
++}
++
++void mtip_block_release(struct gendisk *disk, fmode_t mode)
++{
++}
++
+ /*
+ * Block device operation function.
+ *
+@@ -3691,6 +3670,8 @@ static int mtip_block_getgeo(struct block_device *dev,
+ * layer.
+ */
+ static const struct block_device_operations mtip_block_ops = {
++ .open = mtip_block_open,
++ .release = mtip_block_release,
+ .ioctl = mtip_block_ioctl,
+ #ifdef CONFIG_COMPAT
+ .compat_ioctl = mtip_block_compat_ioctl,
+@@ -3729,10 +3710,9 @@ static int mtip_submit_request(struct blk_mq_hw_ctx *hctx, struct request *rq)
+ rq_data_dir(rq))) {
+ return -ENODATA;
+ }
+- if (unlikely(test_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag)))
++ if (unlikely(test_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag) ||
++ test_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag)))
+ return -ENODATA;
+- if (test_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag))
+- return -ENXIO;
+ }
+
+ if (rq->cmd_flags & REQ_DISCARD) {
+@@ -4066,52 +4046,51 @@ static int mtip_block_remove(struct driver_data *dd)
+ {
+ struct kobject *kobj;
+
+- if (!dd->sr) {
+- mtip_hw_debugfs_exit(dd);
++ mtip_hw_debugfs_exit(dd);
+
+- if (dd->mtip_svc_handler) {
+- set_bit(MTIP_PF_SVC_THD_STOP_BIT, &dd->port->flags);
+- wake_up_interruptible(&dd->port->svc_wait);
+- kthread_stop(dd->mtip_svc_handler);
+- }
++ if (dd->mtip_svc_handler) {
++ set_bit(MTIP_PF_SVC_THD_STOP_BIT, &dd->port->flags);
++ wake_up_interruptible(&dd->port->svc_wait);
++ kthread_stop(dd->mtip_svc_handler);
++ }
+
+- /* Clean up the sysfs attributes, if created */
+- if (test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag)) {
+- kobj = kobject_get(&disk_to_dev(dd->disk)->kobj);
+- if (kobj) {
+- mtip_hw_sysfs_exit(dd, kobj);
+- kobject_put(kobj);
+- }
++ /* Clean up the sysfs attributes, if created */
++ if (test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag)) {
++ kobj = kobject_get(&disk_to_dev(dd->disk)->kobj);
++ if (kobj) {
++ mtip_hw_sysfs_exit(dd, kobj);
++ kobject_put(kobj);
+ }
++ }
+
++ if (!dd->sr)
+ mtip_standby_drive(dd);
+-
+- /*
+- * Delete our gendisk structure. This also removes the device
+- * from /dev
+- */
+- if (dd->bdev) {
+- bdput(dd->bdev);
+- dd->bdev = NULL;
+- }
+- if (dd->disk) {
+- if (dd->disk->queue) {
+- del_gendisk(dd->disk);
+- blk_cleanup_queue(dd->queue);
+- blk_mq_free_tag_set(&dd->tags);
+- dd->queue = NULL;
+- } else
+- put_disk(dd->disk);
+- }
+- dd->disk = NULL;
+-
+- spin_lock(&rssd_index_lock);
+- ida_remove(&rssd_index_ida, dd->index);
+- spin_unlock(&rssd_index_lock);
+- } else {
++ else
+ dev_info(&dd->pdev->dev, "device %s surprise removal\n",
+ dd->disk->disk_name);
++
++ /*
++ * Delete our gendisk structure. This also removes the device
++ * from /dev
++ */
++ if (dd->bdev) {
++ bdput(dd->bdev);
++ dd->bdev = NULL;
+ }
++ if (dd->disk) {
++ del_gendisk(dd->disk);
++ if (dd->disk->queue) {
++ blk_cleanup_queue(dd->queue);
++ blk_mq_free_tag_set(&dd->tags);
++ dd->queue = NULL;
++ }
++ put_disk(dd->disk);
++ }
++ dd->disk = NULL;
++
++ spin_lock(&rssd_index_lock);
++ ida_remove(&rssd_index_ida, dd->index);
++ spin_unlock(&rssd_index_lock);
+
+ /* De-initialize the protocol layer. */
+ mtip_hw_exit(dd);
+@@ -4140,12 +4119,12 @@ static int mtip_block_shutdown(struct driver_data *dd)
+ dev_info(&dd->pdev->dev,
+ "Shutting down %s ...\n", dd->disk->disk_name);
+
++ del_gendisk(dd->disk);
+ if (dd->disk->queue) {
+- del_gendisk(dd->disk);
+ blk_cleanup_queue(dd->queue);
+ blk_mq_free_tag_set(&dd->tags);
+- } else
+- put_disk(dd->disk);
++ }
++ put_disk(dd->disk);
+ dd->disk = NULL;
+ dd->queue = NULL;
+ }
+@@ -4485,7 +4464,7 @@ static void mtip_pci_remove(struct pci_dev *pdev)
+ struct driver_data *dd = pci_get_drvdata(pdev);
+ unsigned long flags, to;
+
+- set_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag);
++ set_bit(MTIP_DDF_REMOVAL_BIT, &dd->dd_flag);
+
+ spin_lock_irqsave(&dev_lock, flags);
+ list_del_init(&dd->online_list);
+@@ -4502,11 +4481,18 @@ static void mtip_pci_remove(struct pci_dev *pdev)
+ } while (atomic_read(&dd->irq_workers_active) != 0 &&
+ time_before(jiffies, to));
+
++ fsync_bdev(dd->bdev);
++
+ if (atomic_read(&dd->irq_workers_active) != 0) {
+ dev_warn(&dd->pdev->dev,
+ "Completion workers still active!\n");
+ }
+
++ if (dd->sr)
++ blk_mq_stop_hw_queues(dd->queue);
++
++ set_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag);
++
+ /* Clean up the block layer. */
+ mtip_block_remove(dd);
+
+@@ -4524,10 +4510,8 @@ static void mtip_pci_remove(struct pci_dev *pdev)
+ list_del_init(&dd->remove_list);
+ spin_unlock_irqrestore(&dev_lock, flags);
+
+- if (!dd->sr)
+- kfree(dd);
+- else
+- set_bit(MTIP_DDF_REMOVE_DONE_BIT, &dd->dd_flag);
++ kfree(dd);
++ set_bit(MTIP_DDF_REMOVE_DONE_BIT, &dd->dd_flag);
+
+ pcim_iounmap_regions(pdev, 1 << MTIP_ABAR);
+ pci_set_drvdata(pdev, NULL);
+diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h
+index ba1b31ee22ec..76695265dffb 100644
+--- a/drivers/block/mtip32xx/mtip32xx.h
++++ b/drivers/block/mtip32xx/mtip32xx.h
+@@ -155,6 +155,7 @@ enum {
+ MTIP_DDF_RESUME_BIT = 6,
+ MTIP_DDF_INIT_DONE_BIT = 7,
+ MTIP_DDF_REBUILD_FAILED_BIT = 8,
++ MTIP_DDF_REMOVAL_BIT = 9,
+
+ MTIP_DDF_STOP_IO = ((1 << MTIP_DDF_REMOVE_PENDING_BIT) |
+ (1 << MTIP_DDF_SEC_LOCK_BIT) |
+diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
+index fa893c3ec408..0beaa52df66b 100644
+--- a/drivers/bluetooth/ath3k.c
++++ b/drivers/bluetooth/ath3k.c
+@@ -82,6 +82,7 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x0489, 0xe05f) },
+ { USB_DEVICE(0x0489, 0xe076) },
+ { USB_DEVICE(0x0489, 0xe078) },
++ { USB_DEVICE(0x0489, 0xe095) },
+ { USB_DEVICE(0x04c5, 0x1330) },
+ { USB_DEVICE(0x04CA, 0x3004) },
+ { USB_DEVICE(0x04CA, 0x3005) },
+@@ -92,6 +93,7 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x04CA, 0x300d) },
+ { USB_DEVICE(0x04CA, 0x300f) },
+ { USB_DEVICE(0x04CA, 0x3010) },
++ { USB_DEVICE(0x04CA, 0x3014) },
+ { USB_DEVICE(0x0930, 0x0219) },
+ { USB_DEVICE(0x0930, 0x021c) },
+ { USB_DEVICE(0x0930, 0x0220) },
+@@ -113,10 +115,12 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x13d3, 0x3362) },
+ { USB_DEVICE(0x13d3, 0x3375) },
+ { USB_DEVICE(0x13d3, 0x3393) },
++ { USB_DEVICE(0x13d3, 0x3395) },
+ { USB_DEVICE(0x13d3, 0x3402) },
+ { USB_DEVICE(0x13d3, 0x3408) },
+ { USB_DEVICE(0x13d3, 0x3423) },
+ { USB_DEVICE(0x13d3, 0x3432) },
++ { USB_DEVICE(0x13d3, 0x3472) },
+ { USB_DEVICE(0x13d3, 0x3474) },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+@@ -144,6 +148,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
+@@ -154,6 +159,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
+@@ -175,10 +181,12 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU22 with sflash firmware */
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index fdba79c3877c..ac553f997a1c 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -184,6 +184,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
+@@ -194,6 +195,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
+@@ -215,10 +217,12 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c
+index e98d15eaa799..1827fc4d15c1 100644
+--- a/drivers/bus/imx-weim.c
++++ b/drivers/bus/imx-weim.c
+@@ -150,7 +150,7 @@ static int __init weim_parse_dt(struct platform_device *pdev,
+ return ret;
+ }
+
+- for_each_child_of_node(pdev->dev.of_node, child) {
++ for_each_available_child_of_node(pdev->dev.of_node, child) {
+ if (!child->name)
+ continue;
+
+diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
+index 2b971b3e5c1c..b02d4b160403 100644
+--- a/drivers/char/tpm/tpm_crb.c
++++ b/drivers/char/tpm/tpm_crb.c
+@@ -309,11 +309,11 @@ static int crb_acpi_remove(struct acpi_device *device)
+ struct device *dev = &device->dev;
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+
+- tpm_chip_unregister(chip);
+-
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ tpm2_shutdown(chip, TPM2_SU_CLEAR);
+
++ tpm_chip_unregister(chip);
++
+ return 0;
+ }
+
+diff --git a/drivers/clk/rockchip/clk-rk3188.c b/drivers/clk/rockchip/clk-rk3188.c
+index 556ce041d371..404a9665879e 100644
+--- a/drivers/clk/rockchip/clk-rk3188.c
++++ b/drivers/clk/rockchip/clk-rk3188.c
+@@ -708,6 +708,9 @@ static const char *const rk3188_critical_clocks[] __initconst = {
+ "aclk_cpu",
+ "aclk_peri",
+ "hclk_peri",
++ "pclk_cpu",
++ "pclk_peri",
++ "hclk_cpubus"
+ };
+
+ static void __init rk3188_common_clk_init(struct device_node *np)
+diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
+index a71c97c03c39..3178f84d2757 100644
+--- a/drivers/crypto/atmel-sha.c
++++ b/drivers/crypto/atmel-sha.c
+@@ -1492,13 +1492,6 @@ static int atmel_sha_remove(struct platform_device *pdev)
+
+ clk_unprepare(sha_dd->iclk);
+
+- iounmap(sha_dd->io_base);
+-
+- clk_put(sha_dd->iclk);
+-
+- if (sha_dd->irq >= 0)
+- free_irq(sha_dd->irq, sha_dd);
+-
+ return 0;
+ }
+
+diff --git a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
+index ea7e8446956a..0a4973b47c99 100644
+--- a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
++++ b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
+@@ -202,6 +202,39 @@ static int ccp_aes_cmac_digest(struct ahash_request *req)
+ return ccp_aes_cmac_finup(req);
+ }
+
++static int ccp_aes_cmac_export(struct ahash_request *req, void *out)
++{
++ struct ccp_aes_cmac_req_ctx *rctx = ahash_request_ctx(req);
++ struct ccp_aes_cmac_exp_ctx state;
++
++ state.null_msg = rctx->null_msg;
++ memcpy(state.iv, rctx->iv, sizeof(state.iv));
++ state.buf_count = rctx->buf_count;
++ memcpy(state.buf, rctx->buf, sizeof(state.buf));
++
++ /* 'out' may not be aligned so memcpy from local variable */
++ memcpy(out, &state, sizeof(state));
++
++ return 0;
++}
++
++static int ccp_aes_cmac_import(struct ahash_request *req, const void *in)
++{
++ struct ccp_aes_cmac_req_ctx *rctx = ahash_request_ctx(req);
++ struct ccp_aes_cmac_exp_ctx state;
++
++ /* 'in' may not be aligned so memcpy to local variable */
++ memcpy(&state, in, sizeof(state));
++
++ memset(rctx, 0, sizeof(*rctx));
++ rctx->null_msg = state.null_msg;
++ memcpy(rctx->iv, state.iv, sizeof(rctx->iv));
++ rctx->buf_count = state.buf_count;
++ memcpy(rctx->buf, state.buf, sizeof(rctx->buf));
++
++ return 0;
++}
++
+ static int ccp_aes_cmac_setkey(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int key_len)
+ {
+@@ -334,10 +367,13 @@ int ccp_register_aes_cmac_algs(struct list_head *head)
+ alg->final = ccp_aes_cmac_final;
+ alg->finup = ccp_aes_cmac_finup;
+ alg->digest = ccp_aes_cmac_digest;
++ alg->export = ccp_aes_cmac_export;
++ alg->import = ccp_aes_cmac_import;
+ alg->setkey = ccp_aes_cmac_setkey;
+
+ halg = &alg->halg;
+ halg->digestsize = AES_BLOCK_SIZE;
++ halg->statesize = sizeof(struct ccp_aes_cmac_exp_ctx);
+
+ base = &halg->base;
+ snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "cmac(aes)");
+diff --git a/drivers/crypto/ccp/ccp-crypto-sha.c b/drivers/crypto/ccp/ccp-crypto-sha.c
+index 507b34e0cc19..9711b6d29162 100644
+--- a/drivers/crypto/ccp/ccp-crypto-sha.c
++++ b/drivers/crypto/ccp/ccp-crypto-sha.c
+@@ -194,6 +194,43 @@ static int ccp_sha_digest(struct ahash_request *req)
+ return ccp_sha_finup(req);
+ }
+
++static int ccp_sha_export(struct ahash_request *req, void *out)
++{
++ struct ccp_sha_req_ctx *rctx = ahash_request_ctx(req);
++ struct ccp_sha_exp_ctx state;
++
++ state.type = rctx->type;
++ state.msg_bits = rctx->msg_bits;
++ state.first = rctx->first;
++ memcpy(state.ctx, rctx->ctx, sizeof(state.ctx));
++ state.buf_count = rctx->buf_count;
++ memcpy(state.buf, rctx->buf, sizeof(state.buf));
++
++ /* 'out' may not be aligned so memcpy from local variable */
++ memcpy(out, &state, sizeof(state));
++
++ return 0;
++}
++
++static int ccp_sha_import(struct ahash_request *req, const void *in)
++{
++ struct ccp_sha_req_ctx *rctx = ahash_request_ctx(req);
++ struct ccp_sha_exp_ctx state;
++
++ /* 'in' may not be aligned so memcpy to local variable */
++ memcpy(&state, in, sizeof(state));
++
++ memset(rctx, 0, sizeof(*rctx));
++ rctx->type = state.type;
++ rctx->msg_bits = state.msg_bits;
++ rctx->first = state.first;
++ memcpy(rctx->ctx, state.ctx, sizeof(rctx->ctx));
++ rctx->buf_count = state.buf_count;
++ memcpy(rctx->buf, state.buf, sizeof(rctx->buf));
++
++ return 0;
++}
++
+ static int ccp_sha_setkey(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int key_len)
+ {
+@@ -390,9 +427,12 @@ static int ccp_register_sha_alg(struct list_head *head,
+ alg->final = ccp_sha_final;
+ alg->finup = ccp_sha_finup;
+ alg->digest = ccp_sha_digest;
++ alg->export = ccp_sha_export;
++ alg->import = ccp_sha_import;
+
+ halg = &alg->halg;
+ halg->digestsize = def->digest_size;
++ halg->statesize = sizeof(struct ccp_sha_exp_ctx);
+
+ base = &halg->base;
+ snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
+diff --git a/drivers/crypto/ccp/ccp-crypto.h b/drivers/crypto/ccp/ccp-crypto.h
+index 76a96f0f44c6..a326ec20bfa8 100644
+--- a/drivers/crypto/ccp/ccp-crypto.h
++++ b/drivers/crypto/ccp/ccp-crypto.h
+@@ -129,6 +129,15 @@ struct ccp_aes_cmac_req_ctx {
+ struct ccp_cmd cmd;
+ };
+
++struct ccp_aes_cmac_exp_ctx {
++ unsigned int null_msg;
++
++ u8 iv[AES_BLOCK_SIZE];
++
++ unsigned int buf_count;
++ u8 buf[AES_BLOCK_SIZE];
++};
++
+ /***** SHA related defines *****/
+ #define MAX_SHA_CONTEXT_SIZE SHA256_DIGEST_SIZE
+ #define MAX_SHA_BLOCK_SIZE SHA256_BLOCK_SIZE
+@@ -171,6 +180,19 @@ struct ccp_sha_req_ctx {
+ struct ccp_cmd cmd;
+ };
+
++struct ccp_sha_exp_ctx {
++ enum ccp_sha_type type;
++
++ u64 msg_bits;
++
++ unsigned int first;
++
++ u8 ctx[MAX_SHA_CONTEXT_SIZE];
++
++ unsigned int buf_count;
++ u8 buf[MAX_SHA_BLOCK_SIZE];
++};
++
+ /***** Common Context Structure *****/
+ struct ccp_ctx {
+ int (*complete)(struct crypto_async_request *req, int ret);
+diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
+index 92772fffc52f..45f734eec954 100644
+--- a/drivers/edac/amd64_edac.c
++++ b/drivers/edac/amd64_edac.c
+@@ -1437,7 +1437,7 @@ static u64 f1x_get_norm_dct_addr(struct amd64_pvt *pvt, u8 range,
+ u64 chan_off;
+ u64 dram_base = get_dram_base(pvt, range);
+ u64 hole_off = f10_dhar_offset(pvt);
+- u64 dct_sel_base_off = (pvt->dct_sel_hi & 0xFFFFFC00) << 16;
++ u64 dct_sel_base_off = (u64)(pvt->dct_sel_hi & 0xFFFFFC00) << 16;
+
+ if (hi_rng) {
+ /*
+diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
+index cd6b9c72c8ac..adcc628b1f93 100644
+--- a/drivers/edac/sb_edac.c
++++ b/drivers/edac/sb_edac.c
+@@ -1043,8 +1043,8 @@ static void get_memory_layout(const struct mem_ctl_info *mci)
+ edac_dbg(0, "TAD#%d: up to %u.%03u GB (0x%016Lx), socket interleave %d, memory interleave %d, TGT: %d, %d, %d, %d, reg=0x%08x\n",
+ n_tads, gb, (mb*1000)/1024,
+ ((u64)tmp_mb) << 20L,
+- (u32)TAD_SOCK(reg),
+- (u32)TAD_CH(reg),
++ (u32)(1 << TAD_SOCK(reg)),
++ (u32)TAD_CH(reg) + 1,
+ (u32)TAD_TGT0(reg),
+ (u32)TAD_TGT1(reg),
+ (u32)TAD_TGT2(reg),
+@@ -1316,7 +1316,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
+ }
+
+ ch_way = TAD_CH(reg) + 1;
+- sck_way = TAD_SOCK(reg) + 1;
++ sck_way = 1 << TAD_SOCK(reg);
+
+ if (ch_way == 3)
+ idx = addr >> 6;
+@@ -1373,7 +1373,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
+ n_tads,
+ addr,
+ limit,
+- (u32)TAD_SOCK(reg),
++ sck_way,
+ ch_way,
+ offset,
+ idx,
+@@ -1388,18 +1388,12 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
+ offset, addr);
+ return -EINVAL;
+ }
+- addr -= offset;
+- /* Store the low bits [0:6] of the addr */
+- ch_addr = addr & 0x7f;
+- /* Remove socket wayness and remove 6 bits */
+- addr >>= 6;
+- addr = div_u64(addr, sck_xch);
+-#if 0
+- /* Divide by channel way */
+- addr = addr / ch_way;
+-#endif
+- /* Recover the last 6 bits */
+- ch_addr |= addr << 6;
++
++ ch_addr = addr - offset;
++ ch_addr >>= (6 + shiftup);
++ ch_addr /= ch_way * sck_way;
++ ch_addr <<= (6 + shiftup);
++ ch_addr |= addr & ((1 << (6 + shiftup)) - 1);
+
+ /*
+ * Step 3) Decode rank
+diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
+index 7b2e0496e0c0..10e6774ab2a2 100644
+--- a/drivers/firmware/efi/efivars.c
++++ b/drivers/firmware/efi/efivars.c
+@@ -221,7 +221,7 @@ sanity_check(struct efi_variable *var, efi_char16_t *name, efi_guid_t vendor,
+ }
+
+ if ((attributes & ~EFI_VARIABLE_MASK) != 0 ||
+- efivar_validate(name, data, size) == false) {
++ efivar_validate(vendor, name, data, size) == false) {
+ printk(KERN_ERR "efivars: Malformed variable content\n");
+ return -EINVAL;
+ }
+@@ -447,7 +447,8 @@ static ssize_t efivar_create(struct file *filp, struct kobject *kobj,
+ }
+
+ if ((attributes & ~EFI_VARIABLE_MASK) != 0 ||
+- efivar_validate(name, data, size) == false) {
++ efivar_validate(new_var->VendorGuid, name, data,
++ size) == false) {
+ printk(KERN_ERR "efivars: Malformed variable content\n");
+ return -EINVAL;
+ }
+@@ -535,50 +536,43 @@ static ssize_t efivar_delete(struct file *filp, struct kobject *kobj,
+ * efivar_create_sysfs_entry - create a new entry in sysfs
+ * @new_var: efivar entry to create
+ *
+- * Returns 1 on failure, 0 on success
++ * Returns 0 on success, negative error code on failure
+ */
+ static int
+ efivar_create_sysfs_entry(struct efivar_entry *new_var)
+ {
+- int i, short_name_size;
++ int short_name_size;
+ char *short_name;
+- unsigned long variable_name_size;
+- efi_char16_t *variable_name;
+-
+- variable_name = new_var->var.VariableName;
+- variable_name_size = ucs2_strlen(variable_name) * sizeof(efi_char16_t);
++ unsigned long utf8_name_size;
++ efi_char16_t *variable_name = new_var->var.VariableName;
++ int ret;
+
+ /*
+- * Length of the variable bytes in ASCII, plus the '-' separator,
++ * Length of the variable bytes in UTF8, plus the '-' separator,
+ * plus the GUID, plus trailing NUL
+ */
+- short_name_size = variable_name_size / sizeof(efi_char16_t)
+- + 1 + EFI_VARIABLE_GUID_LEN + 1;
+-
+- short_name = kzalloc(short_name_size, GFP_KERNEL);
++ utf8_name_size = ucs2_utf8size(variable_name);
++ short_name_size = utf8_name_size + 1 + EFI_VARIABLE_GUID_LEN + 1;
+
++ short_name = kmalloc(short_name_size, GFP_KERNEL);
+ if (!short_name)
+- return 1;
++ return -ENOMEM;
++
++ ucs2_as_utf8(short_name, variable_name, short_name_size);
+
+- /* Convert Unicode to normal chars (assume top bits are 0),
+- ala UTF-8 */
+- for (i=0; i < (int)(variable_name_size / sizeof(efi_char16_t)); i++) {
+- short_name[i] = variable_name[i] & 0xFF;
+- }
+ /* This is ugly, but necessary to separate one vendor's
+ private variables from another's. */
+-
+- *(short_name + strlen(short_name)) = '-';
++ short_name[utf8_name_size] = '-';
+ efi_guid_to_str(&new_var->var.VendorGuid,
+- short_name + strlen(short_name));
++ short_name + utf8_name_size + 1);
+
+ new_var->kobj.kset = efivars_kset;
+
+- i = kobject_init_and_add(&new_var->kobj, &efivar_ktype,
++ ret = kobject_init_and_add(&new_var->kobj, &efivar_ktype,
+ NULL, "%s", short_name);
+ kfree(short_name);
+- if (i)
+- return 1;
++ if (ret)
++ return ret;
+
+ kobject_uevent(&new_var->kobj, KOBJ_ADD);
+ efivar_entry_add(new_var, &efivar_sysfs_list);
+diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
+index 70a0fb10517f..7f2ea21c730d 100644
+--- a/drivers/firmware/efi/vars.c
++++ b/drivers/firmware/efi/vars.c
+@@ -165,67 +165,133 @@ validate_ascii_string(efi_char16_t *var_name, int match, u8 *buffer,
+ }
+
+ struct variable_validate {
++ efi_guid_t vendor;
+ char *name;
+ bool (*validate)(efi_char16_t *var_name, int match, u8 *data,
+ unsigned long len);
+ };
+
++/*
++ * This is the list of variables we need to validate, as well as the
++ * whitelist for what we think is safe not to default to immutable.
++ *
++ * If it has a validate() method that's not NULL, it'll go into the
++ * validation routine. If not, it is assumed valid, but still used for
++ * whitelisting.
++ *
++ * Note that it's sorted by {vendor,name}, but globbed names must come after
++ * any other name with the same prefix.
++ */
+ static const struct variable_validate variable_validate[] = {
+- { "BootNext", validate_uint16 },
+- { "BootOrder", validate_boot_order },
+- { "DriverOrder", validate_boot_order },
+- { "Boot*", validate_load_option },
+- { "Driver*", validate_load_option },
+- { "ConIn", validate_device_path },
+- { "ConInDev", validate_device_path },
+- { "ConOut", validate_device_path },
+- { "ConOutDev", validate_device_path },
+- { "ErrOut", validate_device_path },
+- { "ErrOutDev", validate_device_path },
+- { "Timeout", validate_uint16 },
+- { "Lang", validate_ascii_string },
+- { "PlatformLang", validate_ascii_string },
+- { "", NULL },
++ { EFI_GLOBAL_VARIABLE_GUID, "BootNext", validate_uint16 },
++ { EFI_GLOBAL_VARIABLE_GUID, "BootOrder", validate_boot_order },
++ { EFI_GLOBAL_VARIABLE_GUID, "Boot*", validate_load_option },
++ { EFI_GLOBAL_VARIABLE_GUID, "DriverOrder", validate_boot_order },
++ { EFI_GLOBAL_VARIABLE_GUID, "Driver*", validate_load_option },
++ { EFI_GLOBAL_VARIABLE_GUID, "ConIn", validate_device_path },
++ { EFI_GLOBAL_VARIABLE_GUID, "ConInDev", validate_device_path },
++ { EFI_GLOBAL_VARIABLE_GUID, "ConOut", validate_device_path },
++ { EFI_GLOBAL_VARIABLE_GUID, "ConOutDev", validate_device_path },
++ { EFI_GLOBAL_VARIABLE_GUID, "ErrOut", validate_device_path },
++ { EFI_GLOBAL_VARIABLE_GUID, "ErrOutDev", validate_device_path },
++ { EFI_GLOBAL_VARIABLE_GUID, "Lang", validate_ascii_string },
++ { EFI_GLOBAL_VARIABLE_GUID, "OsIndications", NULL },
++ { EFI_GLOBAL_VARIABLE_GUID, "PlatformLang", validate_ascii_string },
++ { EFI_GLOBAL_VARIABLE_GUID, "Timeout", validate_uint16 },
++ { LINUX_EFI_CRASH_GUID, "*", NULL },
++ { NULL_GUID, "", NULL },
+ };
+
++static bool
++variable_matches(const char *var_name, size_t len, const char *match_name,
++ int *match)
++{
++ for (*match = 0; ; (*match)++) {
++ char c = match_name[*match];
++ char u = var_name[*match];
++
++ /* Wildcard in the matching name means we've matched */
++ if (c == '*')
++ return true;
++
++ /* Case sensitive match */
++ if (!c && *match == len)
++ return true;
++
++ if (c != u)
++ return false;
++
++ if (!c)
++ return true;
++ }
++ return true;
++}
++
+ bool
+-efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len)
++efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
++ unsigned long data_size)
+ {
+ int i;
+- u16 *unicode_name = var_name;
++ unsigned long utf8_size;
++ u8 *utf8_name;
+
+- for (i = 0; variable_validate[i].validate != NULL; i++) {
+- const char *name = variable_validate[i].name;
+- int match;
++ utf8_size = ucs2_utf8size(var_name);
++ utf8_name = kmalloc(utf8_size + 1, GFP_KERNEL);
++ if (!utf8_name)
++ return false;
+
+- for (match = 0; ; match++) {
+- char c = name[match];
+- u16 u = unicode_name[match];
++ ucs2_as_utf8(utf8_name, var_name, utf8_size);
++ utf8_name[utf8_size] = '\0';
+
+- /* All special variables are plain ascii */
+- if (u > 127)
+- return true;
++ for (i = 0; variable_validate[i].name[0] != '\0'; i++) {
++ const char *name = variable_validate[i].name;
++ int match = 0;
+
+- /* Wildcard in the matching name means we've matched */
+- if (c == '*')
+- return variable_validate[i].validate(var_name,
+- match, data, len);
++ if (efi_guidcmp(vendor, variable_validate[i].vendor))
++ continue;
+
+- /* Case sensitive match */
+- if (c != u)
++ if (variable_matches(utf8_name, utf8_size+1, name, &match)) {
++ if (variable_validate[i].validate == NULL)
+ break;
+-
+- /* Reached the end of the string while matching */
+- if (!c)
+- return variable_validate[i].validate(var_name,
+- match, data, len);
++ kfree(utf8_name);
++ return variable_validate[i].validate(var_name, match,
++ data, data_size);
+ }
+ }
+-
++ kfree(utf8_name);
+ return true;
+ }
+ EXPORT_SYMBOL_GPL(efivar_validate);
+
++bool
++efivar_variable_is_removable(efi_guid_t vendor, const char *var_name,
++ size_t len)
++{
++ int i;
++ bool found = false;
++ int match = 0;
++
++ /*
++ * Check if our variable is in the validated variables list
++ */
++ for (i = 0; variable_validate[i].name[0] != '\0'; i++) {
++ if (efi_guidcmp(variable_validate[i].vendor, vendor))
++ continue;
++
++ if (variable_matches(var_name, len,
++ variable_validate[i].name, &match)) {
++ found = true;
++ break;
++ }
++ }
++
++ /*
++ * If it's in our list, it is removable.
++ */
++ return found;
++}
++EXPORT_SYMBOL_GPL(efivar_variable_is_removable);
++
+ static efi_status_t
+ check_var_size(u32 attributes, unsigned long size)
+ {
+@@ -852,7 +918,7 @@ int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
+
+ *set = false;
+
+- if (efivar_validate(name, data, *size) == false)
++ if (efivar_validate(*vendor, name, data, *size) == false)
+ return -EINVAL;
+
+ /*
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 0ec9ad50ba7c..9e33705d4d0e 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -798,6 +798,18 @@ static struct drm_dp_mst_branch *drm_dp_add_mst_branch_device(u8 lct, u8 *rad)
+ return mstb;
+ }
+
++static void drm_dp_free_mst_port(struct kref *kref);
++
++static void drm_dp_free_mst_branch_device(struct kref *kref)
++{
++ struct drm_dp_mst_branch *mstb = container_of(kref, struct drm_dp_mst_branch, kref);
++ if (mstb->port_parent) {
++ if (list_empty(&mstb->port_parent->next))
++ kref_put(&mstb->port_parent->kref, drm_dp_free_mst_port);
++ }
++ kfree(mstb);
++}
++
+ static void drm_dp_destroy_mst_branch_device(struct kref *kref)
+ {
+ struct drm_dp_mst_branch *mstb = container_of(kref, struct drm_dp_mst_branch, kref);
+@@ -805,6 +817,15 @@ static void drm_dp_destroy_mst_branch_device(struct kref *kref)
+ bool wake_tx = false;
+
+ /*
++ * init kref again to be used by ports to remove mst branch when it is
++ * not needed anymore
++ */
++ kref_init(kref);
++
++ if (mstb->port_parent && list_empty(&mstb->port_parent->next))
++ kref_get(&mstb->port_parent->kref);
++
++ /*
+ * destroy all ports - don't need lock
+ * as there are no more references to the mst branch
+ * device at this point.
+@@ -830,7 +851,8 @@ static void drm_dp_destroy_mst_branch_device(struct kref *kref)
+
+ if (wake_tx)
+ wake_up(&mstb->mgr->tx_waitq);
+- kfree(mstb);
++
++ kref_put(kref, drm_dp_free_mst_branch_device);
+ }
+
+ static void drm_dp_put_mst_branch_device(struct drm_dp_mst_branch *mstb)
+@@ -878,6 +900,7 @@ static void drm_dp_destroy_port(struct kref *kref)
+ * from an EDID retrieval */
+
+ mutex_lock(&mgr->destroy_connector_lock);
++ kref_get(&port->parent->kref);
+ list_add(&port->next, &mgr->destroy_connector_list);
+ mutex_unlock(&mgr->destroy_connector_lock);
+ schedule_work(&mgr->destroy_connector_work);
+@@ -1013,18 +1036,27 @@ static bool drm_dp_port_setup_pdt(struct drm_dp_mst_port *port)
+ return send_link;
+ }
+
+-static void drm_dp_check_port_guid(struct drm_dp_mst_branch *mstb,
+- struct drm_dp_mst_port *port)
++static void drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid)
+ {
+ int ret;
+- if (port->dpcd_rev >= 0x12) {
+- port->guid_valid = drm_dp_validate_guid(mstb->mgr, port->guid);
+- if (!port->guid_valid) {
+- ret = drm_dp_send_dpcd_write(mstb->mgr,
+- port,
+- DP_GUID,
+- 16, port->guid);
+- port->guid_valid = true;
++
++ memcpy(mstb->guid, guid, 16);
++
++ if (!drm_dp_validate_guid(mstb->mgr, mstb->guid)) {
++ if (mstb->port_parent) {
++ ret = drm_dp_send_dpcd_write(
++ mstb->mgr,
++ mstb->port_parent,
++ DP_GUID,
++ 16,
++ mstb->guid);
++ } else {
++
++ ret = drm_dp_dpcd_write(
++ mstb->mgr->aux,
++ DP_GUID,
++ mstb->guid,
++ 16);
+ }
+ }
+ }
+@@ -1081,7 +1113,6 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
+ port->dpcd_rev = port_msg->dpcd_revision;
+ port->num_sdp_streams = port_msg->num_sdp_streams;
+ port->num_sdp_stream_sinks = port_msg->num_sdp_stream_sinks;
+- memcpy(port->guid, port_msg->peer_guid, 16);
+
+ /* manage mstb port lists with mgr lock - take a reference
+ for this list */
+@@ -1094,11 +1125,9 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
+
+ if (old_ddps != port->ddps) {
+ if (port->ddps) {
+- drm_dp_check_port_guid(mstb, port);
+ if (!port->input)
+ drm_dp_send_enum_path_resources(mstb->mgr, mstb, port);
+ } else {
+- port->guid_valid = false;
+ port->available_pbn = 0;
+ }
+ }
+@@ -1156,10 +1185,8 @@ static void drm_dp_update_port(struct drm_dp_mst_branch *mstb,
+
+ if (old_ddps != port->ddps) {
+ if (port->ddps) {
+- drm_dp_check_port_guid(mstb, port);
+ dowork = true;
+ } else {
+- port->guid_valid = false;
+ port->available_pbn = 0;
+ }
+ }
+@@ -1216,13 +1243,14 @@ static struct drm_dp_mst_branch *get_mst_branch_device_by_guid_helper(
+ struct drm_dp_mst_branch *found_mstb;
+ struct drm_dp_mst_port *port;
+
++ if (memcmp(mstb->guid, guid, 16) == 0)
++ return mstb;
++
++
+ list_for_each_entry(port, &mstb->ports, next) {
+ if (!port->mstb)
+ continue;
+
+- if (port->guid_valid && memcmp(port->guid, guid, 16) == 0)
+- return port->mstb;
+-
+ found_mstb = get_mst_branch_device_by_guid_helper(port->mstb, guid);
+
+ if (found_mstb)
+@@ -1241,10 +1269,7 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device_by_guid(
+ /* find the port by iterating down */
+ mutex_lock(&mgr->lock);
+
+- if (mgr->guid_valid && memcmp(mgr->guid, guid, 16) == 0)
+- mstb = mgr->mst_primary;
+- else
+- mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid);
++ mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid);
+
+ if (mstb)
+ kref_get(&mstb->kref);
+@@ -1549,6 +1574,9 @@ static int drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
+ txmsg->reply.u.link_addr.ports[i].num_sdp_streams,
+ txmsg->reply.u.link_addr.ports[i].num_sdp_stream_sinks);
+ }
++
++ drm_dp_check_mstb_guid(mstb, txmsg->reply.u.link_addr.guid);
++
+ for (i = 0; i < txmsg->reply.u.link_addr.nports; i++) {
+ drm_dp_add_port(mstb, mgr->dev, &txmsg->reply.u.link_addr.ports[i]);
+ }
+@@ -1595,6 +1623,37 @@ static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
+ return 0;
+ }
+
++static struct drm_dp_mst_port *drm_dp_get_last_connected_port_to_mstb(struct drm_dp_mst_branch *mstb)
++{
++ if (!mstb->port_parent)
++ return NULL;
++
++ if (mstb->port_parent->mstb != mstb)
++ return mstb->port_parent;
++
++ return drm_dp_get_last_connected_port_to_mstb(mstb->port_parent->parent);
++}
++
++static struct drm_dp_mst_branch *drm_dp_get_last_connected_port_and_mstb(struct drm_dp_mst_topology_mgr *mgr,
++ struct drm_dp_mst_branch *mstb,
++ int *port_num)
++{
++ struct drm_dp_mst_branch *rmstb = NULL;
++ struct drm_dp_mst_port *found_port;
++ mutex_lock(&mgr->lock);
++ if (mgr->mst_primary) {
++ found_port = drm_dp_get_last_connected_port_to_mstb(mstb);
++
++ if (found_port) {
++ rmstb = found_port->parent;
++ kref_get(&rmstb->kref);
++ *port_num = found_port->port_num;
++ }
++ }
++ mutex_unlock(&mgr->lock);
++ return rmstb;
++}
++
+ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_mst_port *port,
+ int id,
+@@ -1602,11 +1661,16 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
+ {
+ struct drm_dp_sideband_msg_tx *txmsg;
+ struct drm_dp_mst_branch *mstb;
+- int len, ret;
++ int len, ret, port_num;
+
++ port_num = port->port_num;
+ mstb = drm_dp_get_validated_mstb_ref(mgr, port->parent);
+- if (!mstb)
+- return -EINVAL;
++ if (!mstb) {
++ mstb = drm_dp_get_last_connected_port_and_mstb(mgr, port->parent, &port_num);
++
++ if (!mstb)
++ return -EINVAL;
++ }
+
+ txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
+ if (!txmsg) {
+@@ -1615,7 +1679,7 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
+ }
+
+ txmsg->dst = mstb;
+- len = build_allocate_payload(txmsg, port->port_num,
++ len = build_allocate_payload(txmsg, port_num,
+ id,
+ pbn);
+
+@@ -1969,31 +2033,17 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms
+ mgr->mst_primary = mstb;
+ kref_get(&mgr->mst_primary->kref);
+
+- {
+- struct drm_dp_payload reset_pay;
+- reset_pay.start_slot = 0;
+- reset_pay.num_slots = 0x3f;
+- drm_dp_dpcd_write_payload(mgr, 0, &reset_pay);
+- }
+-
+ ret = drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL,
+- DP_MST_EN | DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC);
++ DP_MST_EN | DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC);
+ if (ret < 0) {
+ goto out_unlock;
+ }
+
+-
+- /* sort out guid */
+- ret = drm_dp_dpcd_read(mgr->aux, DP_GUID, mgr->guid, 16);
+- if (ret != 16) {
+- DRM_DEBUG_KMS("failed to read DP GUID %d\n", ret);
+- goto out_unlock;
+- }
+-
+- mgr->guid_valid = drm_dp_validate_guid(mgr, mgr->guid);
+- if (!mgr->guid_valid) {
+- ret = drm_dp_dpcd_write(mgr->aux, DP_GUID, mgr->guid, 16);
+- mgr->guid_valid = true;
++ {
++ struct drm_dp_payload reset_pay;
++ reset_pay.start_slot = 0;
++ reset_pay.num_slots = 0x3f;
++ drm_dp_dpcd_write_payload(mgr, 0, &reset_pay);
+ }
+
+ queue_work(system_long_wq, &mgr->work);
+@@ -2217,6 +2267,7 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
+ }
+
+ drm_dp_update_port(mstb, &msg.u.conn_stat);
++
+ DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number, msg.u.conn_stat.legacy_device_plug_status, msg.u.conn_stat.displayport_device_plug_status, msg.u.conn_stat.message_capability_status, msg.u.conn_stat.input_port, msg.u.conn_stat.peer_device_type);
+ (*mgr->cbs->hotplug)(mgr);
+
+@@ -2749,6 +2800,13 @@ static void drm_dp_tx_work(struct work_struct *work)
+ mutex_unlock(&mgr->qlock);
+ }
+
++static void drm_dp_free_mst_port(struct kref *kref)
++{
++ struct drm_dp_mst_port *port = container_of(kref, struct drm_dp_mst_port, kref);
++ kref_put(&port->parent->kref, drm_dp_free_mst_branch_device);
++ kfree(port);
++}
++
+ static void drm_dp_destroy_connector_work(struct work_struct *work)
+ {
+ struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, destroy_connector_work);
+@@ -2769,13 +2827,22 @@ static void drm_dp_destroy_connector_work(struct work_struct *work)
+ list_del(&port->next);
+ mutex_unlock(&mgr->destroy_connector_lock);
+
++ kref_init(&port->kref);
++ INIT_LIST_HEAD(&port->next);
++
+ mgr->cbs->destroy_connector(mgr, port->connector);
+
+ drm_dp_port_teardown_pdt(port, port->pdt);
+
+- if (!port->input && port->vcpi.vcpi > 0)
+- drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
+- kfree(port);
++ if (!port->input && port->vcpi.vcpi > 0) {
++ if (mgr->mst_state) {
++ drm_dp_mst_reset_vcpi_slots(mgr, port);
++ drm_dp_update_payload_part1(mgr);
++ drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
++ }
++ }
++
++ kref_put(&port->kref, drm_dp_free_mst_port);
+ send_hotplug = true;
+ }
+ if (send_hotplug)
+diff --git a/drivers/gpu/drm/gma500/gem.c b/drivers/gpu/drm/gma500/gem.c
+index c707fa6fca85..e3bdc8b1c32c 100644
+--- a/drivers/gpu/drm/gma500/gem.c
++++ b/drivers/gpu/drm/gma500/gem.c
+@@ -130,7 +130,7 @@ int psb_gem_create(struct drm_file *file, struct drm_device *dev, u64 size,
+ return ret;
+ }
+ /* We have the initial and handle reference but need only one now */
+- drm_gem_object_unreference(&r->gem);
++ drm_gem_object_unreference_unlocked(&r->gem);
+ *handlep = handle;
+ return 0;
+ }
+diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
+index bb292143997e..adf74f4366bb 100644
+--- a/drivers/gpu/drm/radeon/atombios_encoders.c
++++ b/drivers/gpu/drm/radeon/atombios_encoders.c
+@@ -892,8 +892,6 @@ atombios_dig_encoder_setup2(struct drm_encoder *encoder, int action, int panel_m
+ else
+ args.v1.ucLaneNum = 4;
+
+- if (ENCODER_MODE_IS_DP(args.v1.ucEncoderMode) && (dp_clock == 270000))
+- args.v1.ucConfig |= ATOM_ENCODER_CONFIG_DPLINKRATE_2_70GHZ;
+ switch (radeon_encoder->encoder_id) {
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
+ args.v1.ucConfig = ATOM_ENCODER_CONFIG_V2_TRANSMITTER1;
+@@ -910,6 +908,10 @@ atombios_dig_encoder_setup2(struct drm_encoder *encoder, int action, int panel_m
+ args.v1.ucConfig |= ATOM_ENCODER_CONFIG_LINKB;
+ else
+ args.v1.ucConfig |= ATOM_ENCODER_CONFIG_LINKA;
++
++ if (ENCODER_MODE_IS_DP(args.v1.ucEncoderMode) && (dp_clock == 270000))
++ args.v1.ucConfig |= ATOM_ENCODER_CONFIG_DPLINKRATE_2_70GHZ;
++
+ break;
+ case 2:
+ case 3:
+diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+index 8bc7d0bbd3c8..1523cf94bcdc 100644
+--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
++++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+@@ -62,6 +62,10 @@ bool radeon_has_atpx(void) {
+ return radeon_atpx_priv.atpx_detected;
+ }
+
++bool radeon_has_atpx_dgpu_power_cntl(void) {
++ return radeon_atpx_priv.atpx.functions.power_cntl;
++}
++
+ /**
+ * radeon_atpx_call - call an ATPX method
+ *
+@@ -141,10 +145,6 @@ static void radeon_atpx_parse_functions(struct radeon_atpx_functions *f, u32 mas
+ */
+ static int radeon_atpx_validate(struct radeon_atpx *atpx)
+ {
+- /* make sure required functions are enabled */
+- /* dGPU power control is required */
+- atpx->functions.power_cntl = true;
+-
+ if (atpx->functions.px_params) {
+ union acpi_object *info;
+ struct atpx_px_params output;
+diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
+index ccab94ed9d94..9cbdd8aac28f 100644
+--- a/drivers/gpu/drm/radeon/radeon_device.c
++++ b/drivers/gpu/drm/radeon/radeon_device.c
+@@ -103,6 +103,12 @@ static const char radeon_family_name[][16] = {
+ "LAST",
+ };
+
++#if defined(CONFIG_VGA_SWITCHEROO)
++bool radeon_has_atpx_dgpu_power_cntl(void);
++#else
++static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; }
++#endif
++
+ #define RADEON_PX_QUIRK_DISABLE_PX (1 << 0)
+ #define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)
+
+@@ -1427,7 +1433,7 @@ int radeon_device_init(struct radeon_device *rdev,
+ * ignore it */
+ vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
+
+- if (rdev->flags & RADEON_IS_PX)
++ if ((rdev->flags & RADEON_IS_PX) && radeon_has_atpx_dgpu_power_cntl())
+ runtime = true;
+ vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops, runtime);
+ if (runtime)
+@@ -1734,7 +1740,6 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
+ }
+
+ drm_kms_helper_poll_enable(dev);
+- drm_helper_hpd_irq_event(dev);
+
+ /* set the power state here in case we are a PX system or headless */
+ if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
+diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
+index 634793ea8418..3fa9f67ba8df 100644
+--- a/drivers/gpu/drm/radeon/radeon_fb.c
++++ b/drivers/gpu/drm/radeon/radeon_fb.c
+@@ -333,7 +333,8 @@ out_unref:
+
+ void radeon_fb_output_poll_changed(struct radeon_device *rdev)
+ {
+- drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
++ if (rdev->mode_info.rfbdev)
++ drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
+ }
+
+ static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
+@@ -373,6 +374,10 @@ int radeon_fbdev_init(struct radeon_device *rdev)
+ int bpp_sel = 32;
+ int ret;
+
++ /* don't enable fbdev if no connectors */
++ if (list_empty(&rdev->ddev->mode_config.connector_list))
++ return 0;
++
+ /* select 8 bpp console on RN50 or 16MB cards */
+ if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
+ bpp_sel = 8;
+@@ -425,11 +430,15 @@ void radeon_fbdev_fini(struct radeon_device *rdev)
+
+ void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
+ {
+- fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
++ if (rdev->mode_info.rfbdev)
++ fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
+ }
+
+ bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
+ {
++ if (!rdev->mode_info.rfbdev)
++ return false;
++
+ if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))
+ return true;
+ return false;
+@@ -437,10 +446,12 @@ bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
+
+ void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector)
+ {
+- drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector);
++ if (rdev->mode_info.rfbdev)
++ drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector);
+ }
+
+ void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector)
+ {
+- drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector);
++ if (rdev->mode_info.rfbdev)
++ drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector);
+ }
+diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
+index 9ce9dfeb1258..bc23db196930 100644
+--- a/drivers/hid/hid-core.c
++++ b/drivers/hid/hid-core.c
+@@ -2584,9 +2584,10 @@ int hid_add_device(struct hid_device *hdev)
+ /*
+ * Scan generic devices for group information
+ */
+- if (hid_ignore_special_drivers ||
+- (!hdev->group &&
+- !hid_match_id(hdev, hid_have_special_driver))) {
++ if (hid_ignore_special_drivers) {
++ hdev->group = HID_GROUP_GENERIC;
++ } else if (!hdev->group &&
++ !hid_match_id(hdev, hid_have_special_driver)) {
+ ret = hid_scan_report(hdev);
+ if (ret)
+ hid_warn(hdev, "bad device descriptor (%d)\n", ret);
+diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
+index 6a9b05b328a9..1180664d1206 100644
+--- a/drivers/hid/hid-multitouch.c
++++ b/drivers/hid/hid-multitouch.c
+@@ -322,8 +322,19 @@ static void mt_feature_mapping(struct hid_device *hdev,
+ break;
+ }
+
+- td->inputmode = field->report->id;
+- td->inputmode_index = usage->usage_index;
++ if (td->inputmode < 0) {
++ td->inputmode = field->report->id;
++ td->inputmode_index = usage->usage_index;
++ } else {
++ /*
++ * Some elan panels wrongly declare 2 input mode
++ * features, and silently ignore when we set the
++ * value in the second field. Skip the second feature
++ * and hope for the best.
++ */
++ dev_info(&hdev->dev,
++ "Ignoring the extra HID_DG_INPUTMODE\n");
++ }
+
+ break;
+ case HID_DG_CONTACTMAX:
+diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
+index 92d6cdf02460..c4c9d9523694 100644
+--- a/drivers/hid/i2c-hid/i2c-hid.c
++++ b/drivers/hid/i2c-hid/i2c-hid.c
+@@ -280,17 +280,21 @@ static int i2c_hid_set_or_send_report(struct i2c_client *client, u8 reportType,
+ u16 dataRegister = le16_to_cpu(ihid->hdesc.wDataRegister);
+ u16 outputRegister = le16_to_cpu(ihid->hdesc.wOutputRegister);
+ u16 maxOutputLength = le16_to_cpu(ihid->hdesc.wMaxOutputLength);
++ u16 size;
++ int args_len;
++ int index = 0;
++
++ i2c_hid_dbg(ihid, "%s\n", __func__);
++
++ if (data_len > ihid->bufsize)
++ return -EINVAL;
+
+- /* hid_hw_* already checked that data_len < HID_MAX_BUFFER_SIZE */
+- u16 size = 2 /* size */ +
++ size = 2 /* size */ +
+ (reportID ? 1 : 0) /* reportID */ +
+ data_len /* buf */;
+- int args_len = (reportID >= 0x0F ? 1 : 0) /* optional third byte */ +
++ args_len = (reportID >= 0x0F ? 1 : 0) /* optional third byte */ +
+ 2 /* dataRegister */ +
+ size /* args */;
+- int index = 0;
+-
+- i2c_hid_dbg(ihid, "%s\n", __func__);
+
+ if (!use_data && maxOutputLength == 0)
+ return -ENOSYS;
+diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
+index eab5bd6a2442..1764a168888c 100644
+--- a/drivers/hid/usbhid/hid-core.c
++++ b/drivers/hid/usbhid/hid-core.c
+@@ -477,8 +477,6 @@ static void hid_ctrl(struct urb *urb)
+ struct usbhid_device *usbhid = hid->driver_data;
+ int unplug = 0, status = urb->status;
+
+- spin_lock(&usbhid->lock);
+-
+ switch (status) {
+ case 0: /* success */
+ if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN)
+@@ -498,6 +496,8 @@ static void hid_ctrl(struct urb *urb)
+ hid_warn(urb->dev, "ctrl urb status %d received\n", status);
+ }
+
++ spin_lock(&usbhid->lock);
++
+ if (unplug) {
+ usbhid->ctrltail = usbhid->ctrlhead;
+ } else {
+diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c
+index 43d14588448d..b4dde8315210 100644
+--- a/drivers/iio/dac/mcp4725.c
++++ b/drivers/iio/dac/mcp4725.c
+@@ -300,6 +300,7 @@ static int mcp4725_probe(struct i2c_client *client,
+ data->client = client;
+
+ indio_dev->dev.parent = &client->dev;
++ indio_dev->name = id->name;
+ indio_dev->info = &mcp4725_info;
+ indio_dev->channels = &mcp4725_channel;
+ indio_dev->num_channels = 1;
+diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
+index cb32b593f1c5..36607d52fee0 100644
+--- a/drivers/iio/imu/adis_buffer.c
++++ b/drivers/iio/imu/adis_buffer.c
+@@ -43,7 +43,7 @@ int adis_update_scan_mode(struct iio_dev *indio_dev,
+ return -ENOMEM;
+
+ rx = adis->buffer;
+- tx = rx + indio_dev->scan_bytes;
++ tx = rx + scan_count;
+
+ spi_message_init(&adis->msg);
+
+diff --git a/drivers/iio/pressure/mpl115.c b/drivers/iio/pressure/mpl115.c
+index f5ecd6e19f5d..a0d7deeac62f 100644
+--- a/drivers/iio/pressure/mpl115.c
++++ b/drivers/iio/pressure/mpl115.c
+@@ -117,7 +117,7 @@ static int mpl115_read_raw(struct iio_dev *indio_dev,
+ *val = ret >> 6;
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_OFFSET:
+- *val = 605;
++ *val = -605;
+ *val2 = 750000;
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_CHAN_INFO_SCALE:
+diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
+index cb78b1e9bcd9..f504ba73e5dc 100644
+--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
++++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
+@@ -149,7 +149,7 @@ static int iwch_l2t_send(struct t3cdev *tdev, struct sk_buff *skb, struct l2t_en
+ error = l2t_send(tdev, skb, l2e);
+ if (error < 0)
+ kfree_skb(skb);
+- return error;
++ return error < 0 ? error : 0;
+ }
+
+ int iwch_cxgb3_ofld_send(struct t3cdev *tdev, struct sk_buff *skb)
+@@ -165,7 +165,7 @@ int iwch_cxgb3_ofld_send(struct t3cdev *tdev, struct sk_buff *skb)
+ error = cxgb3_ofld_send(tdev, skb);
+ if (error < 0)
+ kfree_skb(skb);
+- return error;
++ return error < 0 ? error : 0;
+ }
+
+ static void release_tid(struct t3cdev *tdev, u32 hwtid, struct sk_buff *skb)
+diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
+index 353e2ab090ee..b52a704c3449 100644
+--- a/drivers/infiniband/ulp/isert/ib_isert.c
++++ b/drivers/infiniband/ulp/isert/ib_isert.c
+@@ -865,7 +865,7 @@ isert_put_conn(struct isert_conn *isert_conn)
+ * @isert_conn: isert connection struct
+ *
+ * Notes:
+- * In case the connection state is FULL_FEATURE, move state
++ * In case the connection state is BOUND, move state
+ * to TEMINATING and start teardown sequence (rdma_disconnect).
+ * In case the connection state is UP, complete flush as well.
+ *
+@@ -881,6 +881,7 @@ isert_conn_terminate(struct isert_conn *isert_conn)
+ case ISER_CONN_TERMINATING:
+ break;
+ case ISER_CONN_UP:
++ case ISER_CONN_BOUND:
+ case ISER_CONN_FULL_FEATURE: /* FALLTHRU */
+ isert_info("Terminating conn %p state %d\n",
+ isert_conn, isert_conn->state);
+@@ -927,14 +928,9 @@ isert_disconnected_handler(struct rdma_cm_id *cma_id,
+ enum rdma_cm_event_type event)
+ {
+ struct isert_np *isert_np = cma_id->context;
+- struct isert_conn *isert_conn;
++ struct isert_conn *isert_conn = cma_id->qp->qp_context;
+ bool terminating = false;
+
+- if (isert_np->np_cm_id == cma_id)
+- return isert_np_cma_handler(cma_id->context, event);
+-
+- isert_conn = cma_id->qp->qp_context;
+-
+ mutex_lock(&isert_conn->mutex);
+ terminating = (isert_conn->state == ISER_CONN_TERMINATING);
+ isert_conn_terminate(isert_conn);
+@@ -972,11 +968,15 @@ isert_connect_error(struct rdma_cm_id *cma_id)
+ static int
+ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
+ {
++ struct isert_np *isert_np = cma_id->context;
+ int ret = 0;
+
+ isert_info("event %d status %d id %p np %p\n", event->event,
+ event->status, cma_id, cma_id->context);
+
++ if (isert_np->np_cm_id == cma_id)
++ return isert_np_cma_handler(cma_id->context, event->event);
++
+ switch (event->event) {
+ case RDMA_CM_EVENT_CONNECT_REQUEST:
+ ret = isert_connect_request(cma_id, event);
+@@ -2059,7 +2059,8 @@ is_isert_tx_desc(struct isert_conn *isert_conn, void *wr_id)
+ void *start = isert_conn->rx_descs;
+ int len = ISERT_QP_MAX_RECV_DTOS * sizeof(*isert_conn->rx_descs);
+
+- if (wr_id >= start && wr_id < start + len)
++ if ((wr_id >= start && wr_id < start + len) ||
++ (wr_id == isert_conn->login_req_buf))
+ return false;
+
+ return true;
+@@ -2085,7 +2086,8 @@ isert_cq_comp_err(struct isert_conn *isert_conn, struct ib_wc *wc)
+ isert_completion_put(desc, isert_cmd, ib_dev, true);
+ } else {
+ isert_conn->post_recv_buf_count--;
+- if (!isert_conn->post_recv_buf_count)
++ if (!isert_conn->post_recv_buf_count &&
++ isert_conn->state >= ISER_CONN_BOUND)
+ iscsit_cause_connection_reinstatement(isert_conn->conn, 0);
+ }
+ }
+@@ -3268,6 +3270,7 @@ accept_wait:
+
+ conn->context = isert_conn;
+ isert_conn->conn = conn;
++ isert_conn->state = ISER_CONN_BOUND;
+
+ isert_set_conn_info(np, conn, isert_conn);
+
+diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h
+index 9ec23a786c02..621c222f3235 100644
+--- a/drivers/infiniband/ulp/isert/ib_isert.h
++++ b/drivers/infiniband/ulp/isert/ib_isert.h
+@@ -50,6 +50,7 @@ enum iser_ib_op_code {
+ enum iser_conn_state {
+ ISER_CONN_INIT,
+ ISER_CONN_UP,
++ ISER_CONN_BOUND,
+ ISER_CONN_FULL_FEATURE,
+ ISER_CONN_TERMINATING,
+ ISER_CONN_DOWN,
+diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
+index 6fbc7bc824d2..27e5b0090e40 100644
+--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
++++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
+@@ -1742,47 +1742,6 @@ send_sense:
+ return -1;
+ }
+
+-/**
+- * srpt_rx_mgmt_fn_tag() - Process a task management function by tag.
+- * @ch: RDMA channel of the task management request.
+- * @fn: Task management function to perform.
+- * @req_tag: Tag of the SRP task management request.
+- * @mgmt_ioctx: I/O context of the task management request.
+- *
+- * Returns zero if the target core will process the task management
+- * request asynchronously.
+- *
+- * Note: It is assumed that the initiator serializes tag-based task management
+- * requests.
+- */
+-static int srpt_rx_mgmt_fn_tag(struct srpt_send_ioctx *ioctx, u64 tag)
+-{
+- struct srpt_device *sdev;
+- struct srpt_rdma_ch *ch;
+- struct srpt_send_ioctx *target;
+- int ret, i;
+-
+- ret = -EINVAL;
+- ch = ioctx->ch;
+- BUG_ON(!ch);
+- BUG_ON(!ch->sport);
+- sdev = ch->sport->sdev;
+- BUG_ON(!sdev);
+- spin_lock_irq(&sdev->spinlock);
+- for (i = 0; i < ch->rq_size; ++i) {
+- target = ch->ioctx_ring[i];
+- if (target->cmd.se_lun == ioctx->cmd.se_lun &&
+- target->tag == tag &&
+- srpt_get_cmd_state(target) != SRPT_STATE_DONE) {
+- ret = 0;
+- /* now let the target core abort &target->cmd; */
+- break;
+- }
+- }
+- spin_unlock_irq(&sdev->spinlock);
+- return ret;
+-}
+-
+ static int srp_tmr_to_tcm(int fn)
+ {
+ switch (fn) {
+@@ -1817,7 +1776,6 @@ static void srpt_handle_tsk_mgmt(struct srpt_rdma_ch *ch,
+ struct se_cmd *cmd;
+ struct se_session *sess = ch->sess;
+ uint64_t unpacked_lun;
+- uint32_t tag = 0;
+ int tcm_tmr;
+ int rc;
+
+@@ -1833,25 +1791,10 @@ static void srpt_handle_tsk_mgmt(struct srpt_rdma_ch *ch,
+ srpt_set_cmd_state(send_ioctx, SRPT_STATE_MGMT);
+ send_ioctx->tag = srp_tsk->tag;
+ tcm_tmr = srp_tmr_to_tcm(srp_tsk->tsk_mgmt_func);
+- if (tcm_tmr < 0) {
+- send_ioctx->cmd.se_tmr_req->response =
+- TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED;
+- goto fail;
+- }
+ unpacked_lun = srpt_unpack_lun((uint8_t *)&srp_tsk->lun,
+ sizeof(srp_tsk->lun));
+-
+- if (srp_tsk->tsk_mgmt_func == SRP_TSK_ABORT_TASK) {
+- rc = srpt_rx_mgmt_fn_tag(send_ioctx, srp_tsk->task_tag);
+- if (rc < 0) {
+- send_ioctx->cmd.se_tmr_req->response =
+- TMR_TASK_DOES_NOT_EXIST;
+- goto fail;
+- }
+- tag = srp_tsk->task_tag;
+- }
+ rc = target_submit_tmr(&send_ioctx->cmd, sess, NULL, unpacked_lun,
+- srp_tsk, tcm_tmr, GFP_KERNEL, tag,
++ srp_tsk, tcm_tmr, GFP_KERNEL, srp_tsk->task_tag,
+ TARGET_SCF_ACK_KREF);
+ if (rc != 0) {
+ send_ioctx->cmd.se_tmr_req->response = TMR_FUNCTION_REJECTED;
+diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c
+index f63341f20b91..e8c6a4842e91 100644
+--- a/drivers/input/misc/ati_remote2.c
++++ b/drivers/input/misc/ati_remote2.c
+@@ -817,26 +817,49 @@ static int ati_remote2_probe(struct usb_interface *interface, const struct usb_d
+
+ ar2->udev = udev;
+
++ /* Sanity check, first interface must have an endpoint */
++ if (alt->desc.bNumEndpoints < 1 || !alt->endpoint) {
++ dev_err(&interface->dev,
++ "%s(): interface 0 must have an endpoint\n", __func__);
++ r = -ENODEV;
++ goto fail1;
++ }
+ ar2->intf[0] = interface;
+ ar2->ep[0] = &alt->endpoint[0].desc;
+
++ /* Sanity check, the device must have two interfaces */
+ ar2->intf[1] = usb_ifnum_to_if(udev, 1);
++ if ((udev->actconfig->desc.bNumInterfaces < 2) || !ar2->intf[1]) {
++ dev_err(&interface->dev, "%s(): need 2 interfaces, found %d\n",
++ __func__, udev->actconfig->desc.bNumInterfaces);
++ r = -ENODEV;
++ goto fail1;
++ }
++
+ r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2);
+ if (r)
+ goto fail1;
++
++ /* Sanity check, second interface must have an endpoint */
+ alt = ar2->intf[1]->cur_altsetting;
++ if (alt->desc.bNumEndpoints < 1 || !alt->endpoint) {
++ dev_err(&interface->dev,
++ "%s(): interface 1 must have an endpoint\n", __func__);
++ r = -ENODEV;
++ goto fail2;
++ }
+ ar2->ep[1] = &alt->endpoint[0].desc;
+
+ r = ati_remote2_urb_init(ar2);
+ if (r)
+- goto fail2;
++ goto fail3;
+
+ ar2->channel_mask = channel_mask;
+ ar2->mode_mask = mode_mask;
+
+ r = ati_remote2_setup(ar2, ar2->channel_mask);
+ if (r)
+- goto fail2;
++ goto fail3;
+
+ usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
+ strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
+@@ -845,11 +868,11 @@ static int ati_remote2_probe(struct usb_interface *interface, const struct usb_d
+
+ r = sysfs_create_group(&udev->dev.kobj, &ati_remote2_attr_group);
+ if (r)
+- goto fail2;
++ goto fail3;
+
+ r = ati_remote2_input_init(ar2);
+ if (r)
+- goto fail3;
++ goto fail4;
+
+ usb_set_intfdata(interface, ar2);
+
+@@ -857,10 +880,11 @@ static int ati_remote2_probe(struct usb_interface *interface, const struct usb_d
+
+ return 0;
+
+- fail3:
++ fail4:
+ sysfs_remove_group(&udev->dev.kobj, &ati_remote2_attr_group);
+- fail2:
++ fail3:
+ ati_remote2_urb_cleanup(ar2);
++ fail2:
+ usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
+ fail1:
+ kfree(ar2);
+diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
+index ac1fa5f44580..9c0ea36913b4 100644
+--- a/drivers/input/misc/ims-pcu.c
++++ b/drivers/input/misc/ims-pcu.c
+@@ -1663,6 +1663,8 @@ static int ims_pcu_parse_cdc_data(struct usb_interface *intf, struct ims_pcu *pc
+
+ pcu->ctrl_intf = usb_ifnum_to_if(pcu->udev,
+ union_desc->bMasterInterface0);
++ if (!pcu->ctrl_intf)
++ return -EINVAL;
+
+ alt = pcu->ctrl_intf->cur_altsetting;
+ pcu->ep_ctrl = &alt->endpoint[0].desc;
+@@ -1670,6 +1672,8 @@ static int ims_pcu_parse_cdc_data(struct usb_interface *intf, struct ims_pcu *pc
+
+ pcu->data_intf = usb_ifnum_to_if(pcu->udev,
+ union_desc->bSlaveInterface0);
++ if (!pcu->data_intf)
++ return -EINVAL;
+
+ alt = pcu->data_intf->cur_altsetting;
+ if (alt->desc.bNumEndpoints != 2) {
+diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c
+index 63b539d3daba..84909a12ff36 100644
+--- a/drivers/input/misc/powermate.c
++++ b/drivers/input/misc/powermate.c
+@@ -307,6 +307,9 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
+ int error = -ENOMEM;
+
+ interface = intf->cur_altsetting;
++ if (interface->desc.bNumEndpoints < 1)
++ return -EINVAL;
++
+ endpoint = &interface->endpoint[0].desc;
+ if (!usb_endpoint_is_int_in(endpoint))
+ return -EIO;
+diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
+index 3a32caf06bf1..8cfeec06d8d9 100644
+--- a/drivers/input/mouse/synaptics.c
++++ b/drivers/input/mouse/synaptics.c
+@@ -862,8 +862,9 @@ static void synaptics_report_ext_buttons(struct psmouse *psmouse,
+ if (!SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap))
+ return;
+
+- /* Bug in FW 8.1, buttons are reported only when ExtBit is 1 */
+- if (SYN_ID_FULL(priv->identity) == 0x801 &&
++ /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
++ if ((SYN_ID_FULL(priv->identity) == 0x801 ||
++ SYN_ID_FULL(priv->identity) == 0x802) &&
+ !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
+ return;
+
+diff --git a/drivers/irqchip/irq-omap-intc.c b/drivers/irqchip/irq-omap-intc.c
+index a569c6dbd1d1..5ba876e9b805 100644
+--- a/drivers/irqchip/irq-omap-intc.c
++++ b/drivers/irqchip/irq-omap-intc.c
+@@ -48,6 +48,7 @@
+ #define INTC_ILR0 0x0100
+
+ #define ACTIVEIRQ_MASK 0x7f /* omap2/3 active interrupt bits */
++#define SPURIOUSIRQ_MASK (0x1ffffff << 7)
+ #define INTCPS_NR_ILR_REGS 128
+ #define INTCPS_NR_MIR_REGS 4
+
+@@ -331,37 +332,36 @@ static int __init omap_init_irq(u32 base, struct device_node *node)
+ static asmlinkage void __exception_irq_entry
+ omap_intc_handle_irq(struct pt_regs *regs)
+ {
+- u32 irqnr = 0;
+- int handled_irq = 0;
+- int i;
+-
+- do {
+- for (i = 0; i < omap_nr_pending; i++) {
+- irqnr = intc_readl(INTC_PENDING_IRQ0 + (0x20 * i));
+- if (irqnr)
+- goto out;
+- }
+-
+-out:
+- if (!irqnr)
+- break;
++ extern unsigned long irq_err_count;
++ u32 irqnr;
+
+- irqnr = intc_readl(INTC_SIR);
+- irqnr &= ACTIVEIRQ_MASK;
+-
+- if (irqnr) {
+- handle_domain_irq(domain, irqnr, regs);
+- handled_irq = 1;
+- }
+- } while (irqnr);
++ irqnr = intc_readl(INTC_SIR);
+
+ /*
+- * If an irq is masked or deasserted while active, we will
+- * keep ending up here with no irq handled. So remove it from
+- * the INTC with an ack.
++ * A spurious IRQ can result if interrupt that triggered the
++ * sorting is no longer active during the sorting (10 INTC
++ * functional clock cycles after interrupt assertion). Or a
++ * change in interrupt mask affected the result during sorting
++ * time. There is no special handling required except ignoring
++ * the SIR register value just read and retrying.
++ * See section 6.2.5 of AM335x TRM Literature Number: SPRUH73K
++ *
++ * Many a times, a spurious interrupt situation has been fixed
++ * by adding a flush for the posted write acking the IRQ in
++ * the device driver. Typically, this is going be the device
++ * driver whose interrupt was handled just before the spurious
++ * IRQ occurred. Pay attention to those device drivers if you
++ * run into hitting the spurious IRQ condition below.
+ */
+- if (!handled_irq)
++ if (unlikely((irqnr & SPURIOUSIRQ_MASK) == SPURIOUSIRQ_MASK)) {
++ pr_err_once("%s: spurious irq!\n", __func__);
++ irq_err_count++;
+ omap_ack_irq(NULL);
++ return;
++ }
++
++ irqnr &= ACTIVEIRQ_MASK;
++ handle_domain_irq(domain, irqnr, regs);
+ }
+
+ void __init omap3_init_irq(void)
+diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
+index 42522c8f13c6..2a102834c2ee 100644
+--- a/drivers/md/bcache/super.c
++++ b/drivers/md/bcache/super.c
+@@ -1046,8 +1046,12 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c)
+ */
+ atomic_set(&dc->count, 1);
+
+- if (bch_cached_dev_writeback_start(dc))
++ /* Block writeback thread, but spawn it */
++ down_write(&dc->writeback_lock);
++ if (bch_cached_dev_writeback_start(dc)) {
++ up_write(&dc->writeback_lock);
+ return -ENOMEM;
++ }
+
+ if (BDEV_STATE(&dc->sb) == BDEV_STATE_DIRTY) {
+ bch_sectors_dirty_init(dc);
+@@ -1059,6 +1063,9 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c)
+ bch_cached_dev_run(dc);
+ bcache_device_link(&dc->disk, c, "bdev");
+
++ /* Allow the writeback thread to proceed */
++ up_write(&dc->writeback_lock);
++
+ pr_info("Caching %s as %s on set %pU",
+ bdevname(dc->bdev, buf), dc->disk.disk->disk_name,
+ dc->disk.c->sb.set_uuid);
+@@ -1397,6 +1404,9 @@ static void cache_set_flush(struct closure *cl)
+ struct btree *b;
+ unsigned i;
+
++ if (!c)
++ closure_return(cl);
++
+ bch_cache_accounting_destroy(&c->accounting);
+
+ kobject_put(&c->internal);
+@@ -1862,11 +1872,12 @@ static int cache_alloc(struct cache_sb *sb, struct cache *ca)
+ return 0;
+ }
+
+-static void register_cache(struct cache_sb *sb, struct page *sb_page,
++static int register_cache(struct cache_sb *sb, struct page *sb_page,
+ struct block_device *bdev, struct cache *ca)
+ {
+ char name[BDEVNAME_SIZE];
+- const char *err = "cannot allocate memory";
++ const char *err = NULL;
++ int ret = 0;
+
+ memcpy(&ca->sb, sb, sizeof(struct cache_sb));
+ ca->bdev = bdev;
+@@ -1881,27 +1892,35 @@ static void register_cache(struct cache_sb *sb, struct page *sb_page,
+ if (blk_queue_discard(bdev_get_queue(ca->bdev)))
+ ca->discard = CACHE_DISCARD(&ca->sb);
+
+- if (cache_alloc(sb, ca) != 0)
++ ret = cache_alloc(sb, ca);
++ if (ret != 0)
+ goto err;
+
+- err = "error creating kobject";
+- if (kobject_add(&ca->kobj, &part_to_dev(bdev->bd_part)->kobj, "bcache"))
+- goto err;
++ if (kobject_add(&ca->kobj, &part_to_dev(bdev->bd_part)->kobj, "bcache")) {
++ err = "error calling kobject_add";
++ ret = -ENOMEM;
++ goto out;
++ }
+
+ mutex_lock(&bch_register_lock);
+ err = register_cache_set(ca);
+ mutex_unlock(&bch_register_lock);
+
+- if (err)
+- goto err;
++ if (err) {
++ ret = -ENODEV;
++ goto out;
++ }
+
+ pr_info("registered cache device %s", bdevname(bdev, name));
++
+ out:
+ kobject_put(&ca->kobj);
+- return;
++
+ err:
+- pr_notice("error opening %s: %s", bdevname(bdev, name), err);
+- goto out;
++ if (err)
++ pr_notice("error opening %s: %s", bdevname(bdev, name), err);
++
++ return ret;
+ }
+
+ /* Global interfaces/init */
+@@ -1999,7 +2018,8 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
+ if (!ca)
+ goto err_close;
+
+- register_cache(sb, sb_page, bdev, ca);
++ if (register_cache(sb, sb_page, bdev, ca) != 0)
++ goto err_close;
+ }
+ out:
+ if (sb_page)
+diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
+index cde1d6749017..9b4f73e55d7c 100644
+--- a/drivers/md/dm-thin-metadata.c
++++ b/drivers/md/dm-thin-metadata.c
+@@ -1803,5 +1803,8 @@ bool dm_pool_metadata_needs_check(struct dm_pool_metadata *pmd)
+
+ void dm_pool_issue_prefetches(struct dm_pool_metadata *pmd)
+ {
+- dm_tm_issue_prefetches(pmd->tm);
++ down_read(&pmd->root_lock);
++ if (!pmd->fail_io)
++ dm_tm_issue_prefetches(pmd->tm);
++ up_read(&pmd->root_lock);
+ }
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index 62610aafaac7..1f37781f7765 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -1065,12 +1065,8 @@ static void rq_completed(struct mapped_device *md, int rw, bool run_queue)
+ * back into ->request_fn() could deadlock attempting to grab the
+ * queue lock again.
+ */
+- if (run_queue) {
+- if (md->queue->mq_ops)
+- blk_mq_run_hw_queues(md->queue, true);
+- else
+- blk_run_queue_async(md->queue);
+- }
++ if (!md->queue->mq_ops && run_queue)
++ blk_run_queue_async(md->queue);
+
+ /*
+ * dm_put() must be at the end of this function. See the comment above
+@@ -1296,7 +1292,10 @@ static void dm_complete_request(struct request *rq, int error)
+ struct dm_rq_target_io *tio = tio_from_request(rq);
+
+ tio->error = error;
+- blk_complete_request(rq);
++ if (!rq->q->mq_ops)
++ blk_complete_request(rq);
++ else
++ blk_mq_complete_request(rq);
+ }
+
+ /*
+diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
+index ac3ede2bd00e..ac37ef18201c 100644
+--- a/drivers/md/multipath.c
++++ b/drivers/md/multipath.c
+@@ -129,7 +129,9 @@ static void multipath_make_request(struct mddev *mddev, struct bio * bio)
+ }
+ multipath = conf->multipaths + mp_bh->path;
+
+- mp_bh->bio = *bio;
++ bio_init(&mp_bh->bio);
++ __bio_clone_fast(&mp_bh->bio, bio);
++
+ mp_bh->bio.bi_iter.bi_sector += multipath->rdev->data_offset;
+ mp_bh->bio.bi_bdev = multipath->rdev->bdev;
+ mp_bh->bio.bi_rw |= REQ_FAILFAST_TRANSPORT;
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index 0d767e31f455..ef0a99a3a779 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -2080,6 +2080,14 @@ static int resize_chunks(struct r5conf *conf, int new_disks, int new_sectors)
+ unsigned long cpu;
+ int err = 0;
+
++ /*
++ * Never shrink. And mddev_suspend() could deadlock if this is called
++ * from raid5d. In that case, scribble_disks and scribble_sectors
++ * should equal to new_disks and new_sectors
++ */
++ if (conf->scribble_disks >= new_disks &&
++ conf->scribble_sectors >= new_sectors)
++ return 0;
+ mddev_suspend(conf->mddev);
+ get_online_cpus();
+ for_each_present_cpu(cpu) {
+@@ -2101,6 +2109,10 @@ static int resize_chunks(struct r5conf *conf, int new_disks, int new_sectors)
+ }
+ put_online_cpus();
+ mddev_resume(conf->mddev);
++ if (!err) {
++ conf->scribble_disks = new_disks;
++ conf->scribble_sectors = new_sectors;
++ }
+ return err;
+ }
+
+@@ -4220,7 +4232,6 @@ static void break_stripe_batch_list(struct stripe_head *head_sh,
+ WARN_ON_ONCE(sh->state & ((1 << STRIPE_ACTIVE) |
+ (1 << STRIPE_SYNCING) |
+ (1 << STRIPE_REPLACED) |
+- (1 << STRIPE_PREREAD_ACTIVE) |
+ (1 << STRIPE_DELAYED) |
+ (1 << STRIPE_BIT_DELAY) |
+ (1 << STRIPE_FULL_WRITE) |
+@@ -4235,6 +4246,7 @@ static void break_stripe_batch_list(struct stripe_head *head_sh,
+ (1 << STRIPE_REPLACED)));
+
+ set_mask_bits(&sh->state, ~(STRIPE_EXPAND_SYNC_FLAGS |
++ (1 << STRIPE_PREREAD_ACTIVE) |
+ (1 << STRIPE_DEGRADED)),
+ head_sh->state & (1 << STRIPE_INSYNC));
+
+@@ -6366,6 +6378,12 @@ static int raid5_alloc_percpu(struct r5conf *conf)
+ }
+ put_online_cpus();
+
++ if (!err) {
++ conf->scribble_disks = max(conf->raid_disks,
++ conf->previous_raid_disks);
++ conf->scribble_sectors = max(conf->chunk_sectors,
++ conf->prev_chunk_sectors);
++ }
+ return err;
+ }
+
+@@ -6942,8 +6960,8 @@ static int run(struct mddev *mddev)
+ }
+
+ if (discard_supported &&
+- mddev->queue->limits.max_discard_sectors >= stripe &&
+- mddev->queue->limits.discard_granularity >= stripe)
++ mddev->queue->limits.max_discard_sectors >= (stripe >> 9) &&
++ mddev->queue->limits.discard_granularity >= stripe)
+ queue_flag_set_unlocked(QUEUE_FLAG_DISCARD,
+ mddev->queue);
+ else
+diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
+index 03472fbbd882..d31ed93bb8a9 100644
+--- a/drivers/md/raid5.h
++++ b/drivers/md/raid5.h
+@@ -501,6 +501,8 @@ struct r5conf {
+ * conversions
+ */
+ } __percpu *percpu;
++ int scribble_disks;
++ int scribble_sectors;
+ #ifdef CONFIG_HOTPLUG_CPU
+ struct notifier_block cpu_notify;
+ #endif
+diff --git a/drivers/media/i2c/adv7511.c b/drivers/media/i2c/adv7511.c
+index 12d93203d405..57bb74299643 100644
+--- a/drivers/media/i2c/adv7511.c
++++ b/drivers/media/i2c/adv7511.c
+@@ -1048,12 +1048,23 @@ static void adv7511_dbg_dump_edid(int lvl, int debug, struct v4l2_subdev *sd, in
+ }
+ }
+
++static void adv7511_notify_no_edid(struct v4l2_subdev *sd)
++{
++ struct adv7511_state *state = get_adv7511_state(sd);
++ struct adv7511_edid_detect ed;
++
++ /* We failed to read the EDID, so send an event for this. */
++ ed.present = false;
++ ed.segment = adv7511_rd(sd, 0xc4);
++ v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
++ v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, 0x0);
++}
++
+ static void adv7511_edid_handler(struct work_struct *work)
+ {
+ struct delayed_work *dwork = to_delayed_work(work);
+ struct adv7511_state *state = container_of(dwork, struct adv7511_state, edid_handler);
+ struct v4l2_subdev *sd = &state->sd;
+- struct adv7511_edid_detect ed;
+
+ v4l2_dbg(1, debug, sd, "%s:\n", __func__);
+
+@@ -1078,9 +1089,7 @@ static void adv7511_edid_handler(struct work_struct *work)
+ }
+
+ /* We failed to read the EDID, so send an event for this. */
+- ed.present = false;
+- ed.segment = adv7511_rd(sd, 0xc4);
+- v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
++ adv7511_notify_no_edid(sd);
+ v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__);
+ }
+
+@@ -1151,7 +1160,6 @@ static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd)
+ /* update read only ctrls */
+ v4l2_ctrl_s_ctrl(state->hotplug_ctrl, adv7511_have_hotplug(sd) ? 0x1 : 0x0);
+ v4l2_ctrl_s_ctrl(state->rx_sense_ctrl, adv7511_have_rx_sense(sd) ? 0x1 : 0x0);
+- v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0);
+
+ if ((status & MASK_ADV7511_HPD_DETECT) && ((status & MASK_ADV7511_MSEN_DETECT) || state->edid.segments)) {
+ v4l2_dbg(1, debug, sd, "%s: hotplug and (rx-sense or edid)\n", __func__);
+@@ -1181,6 +1189,7 @@ static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd)
+ }
+ adv7511_s_power(sd, false);
+ memset(&state->edid, 0, sizeof(struct adv7511_state_edid));
++ adv7511_notify_no_edid(sd);
+ }
+ }
+
+@@ -1257,6 +1266,7 @@ static bool adv7511_check_edid_status(struct v4l2_subdev *sd)
+ }
+ /* one more segment read ok */
+ state->edid.segments = segment + 1;
++ v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, 0x1);
+ if (((state->edid.data[0x7e] >> 1) + 1) > state->edid.segments) {
+ /* Request next EDID segment */
+ v4l2_dbg(1, debug, sd, "%s: request segment %d\n", __func__, state->edid.segments);
+@@ -1276,7 +1286,6 @@ static bool adv7511_check_edid_status(struct v4l2_subdev *sd)
+ ed.present = true;
+ ed.segment = 0;
+ state->edid_detect_counter++;
+- v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0);
+ v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
+ return ed.present;
+ }
+diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
+index bc12060e0882..88a9d3a10131 100644
+--- a/drivers/media/pci/bt8xx/bttv-driver.c
++++ b/drivers/media/pci/bt8xx/bttv-driver.c
+@@ -2334,6 +2334,19 @@ static int bttv_g_fmt_vid_overlay(struct file *file, void *priv,
+ return 0;
+ }
+
++static void bttv_get_width_mask_vid_cap(const struct bttv_format *fmt,
++ unsigned int *width_mask,
++ unsigned int *width_bias)
++{
++ if (fmt->flags & FORMAT_FLAGS_PLANAR) {
++ *width_mask = ~15; /* width must be a multiple of 16 pixels */
++ *width_bias = 8; /* nearest */
++ } else {
++ *width_mask = ~3; /* width must be a multiple of 4 pixels */
++ *width_bias = 2; /* nearest */
++ }
++}
++
+ static int bttv_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+ {
+@@ -2343,6 +2356,7 @@ static int bttv_try_fmt_vid_cap(struct file *file, void *priv,
+ enum v4l2_field field;
+ __s32 width, height;
+ __s32 height2;
++ unsigned int width_mask, width_bias;
+ int rc;
+
+ fmt = format_by_fourcc(f->fmt.pix.pixelformat);
+@@ -2375,9 +2389,9 @@ static int bttv_try_fmt_vid_cap(struct file *file, void *priv,
+ width = f->fmt.pix.width;
+ height = f->fmt.pix.height;
+
++ bttv_get_width_mask_vid_cap(fmt, &width_mask, &width_bias);
+ rc = limit_scaled_size_lock(fh, &width, &height, field,
+- /* width_mask: 4 pixels */ ~3,
+- /* width_bias: nearest */ 2,
++ width_mask, width_bias,
+ /* adjust_size */ 1,
+ /* adjust_crop */ 0);
+ if (0 != rc)
+@@ -2410,6 +2424,7 @@ static int bttv_s_fmt_vid_cap(struct file *file, void *priv,
+ struct bttv_fh *fh = priv;
+ struct bttv *btv = fh->btv;
+ __s32 width, height;
++ unsigned int width_mask, width_bias;
+ enum v4l2_field field;
+
+ retval = bttv_switch_type(fh, f->type);
+@@ -2424,9 +2439,10 @@ static int bttv_s_fmt_vid_cap(struct file *file, void *priv,
+ height = f->fmt.pix.height;
+ field = f->fmt.pix.field;
+
++ fmt = format_by_fourcc(f->fmt.pix.pixelformat);
++ bttv_get_width_mask_vid_cap(fmt, &width_mask, &width_bias);
+ retval = limit_scaled_size_lock(fh, &width, &height, f->fmt.pix.field,
+- /* width_mask: 4 pixels */ ~3,
+- /* width_bias: nearest */ 2,
++ width_mask, width_bias,
+ /* adjust_size */ 1,
+ /* adjust_crop */ 1);
+ if (0 != retval)
+@@ -2434,8 +2450,6 @@ static int bttv_s_fmt_vid_cap(struct file *file, void *priv,
+
+ f->fmt.pix.field = field;
+
+- fmt = format_by_fourcc(f->fmt.pix.pixelformat);
+-
+ /* update our state informations */
+ fh->fmt = fmt;
+ fh->cap.field = f->fmt.pix.field;
+diff --git a/drivers/media/pci/saa7134/saa7134-video.c b/drivers/media/pci/saa7134/saa7134-video.c
+index 99d09a7566d3..175d3c1f1e6d 100644
+--- a/drivers/media/pci/saa7134/saa7134-video.c
++++ b/drivers/media/pci/saa7134/saa7134-video.c
+@@ -1211,10 +1211,13 @@ static int saa7134_g_fmt_vid_cap(struct file *file, void *priv,
+ f->fmt.pix.height = dev->height;
+ f->fmt.pix.field = dev->field;
+ f->fmt.pix.pixelformat = dev->fmt->fourcc;
+- f->fmt.pix.bytesperline =
+- (f->fmt.pix.width * dev->fmt->depth) >> 3;
++ if (dev->fmt->planar)
++ f->fmt.pix.bytesperline = f->fmt.pix.width;
++ else
++ f->fmt.pix.bytesperline =
++ (f->fmt.pix.width * dev->fmt->depth) / 8;
+ f->fmt.pix.sizeimage =
+- f->fmt.pix.height * f->fmt.pix.bytesperline;
++ (f->fmt.pix.height * f->fmt.pix.width * dev->fmt->depth) / 8;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ return 0;
+ }
+@@ -1290,10 +1293,13 @@ static int saa7134_try_fmt_vid_cap(struct file *file, void *priv,
+ if (f->fmt.pix.height > maxh)
+ f->fmt.pix.height = maxh;
+ f->fmt.pix.width &= ~0x03;
+- f->fmt.pix.bytesperline =
+- (f->fmt.pix.width * fmt->depth) >> 3;
++ if (fmt->planar)
++ f->fmt.pix.bytesperline = f->fmt.pix.width;
++ else
++ f->fmt.pix.bytesperline =
++ (f->fmt.pix.width * fmt->depth) / 8;
+ f->fmt.pix.sizeimage =
+- f->fmt.pix.height * f->fmt.pix.bytesperline;
++ (f->fmt.pix.height * f->fmt.pix.width * fmt->depth) / 8;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+
+ return 0;
+diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
+index c5dbba5b5bc9..6684e2ee3db1 100644
+--- a/drivers/media/tuners/si2157.c
++++ b/drivers/media/tuners/si2157.c
+@@ -167,6 +167,7 @@ static int si2157_init(struct dvb_frontend *fe)
+ len = fw->data[fw->size - remaining];
+ if (len > SI2157_ARGLEN) {
+ dev_err(&client->dev, "Bad firmware length\n");
++ ret = -EINVAL;
+ goto err_release_firmware;
+ }
+ memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
+diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c
+index 702267e208ba..a7e1f6f37790 100644
+--- a/drivers/media/usb/pwc/pwc-if.c
++++ b/drivers/media/usb/pwc/pwc-if.c
+@@ -91,6 +91,7 @@ static const struct usb_device_id pwc_device_table [] = {
+ { USB_DEVICE(0x0471, 0x0312) },
+ { USB_DEVICE(0x0471, 0x0313) }, /* the 'new' 720K */
+ { USB_DEVICE(0x0471, 0x0329) }, /* Philips SPC 900NC PC Camera */
++ { USB_DEVICE(0x0471, 0x032C) }, /* Philips SPC 880NC PC Camera */
+ { USB_DEVICE(0x069A, 0x0001) }, /* Askey */
+ { USB_DEVICE(0x046D, 0x08B0) }, /* Logitech QuickCam Pro 3000 */
+ { USB_DEVICE(0x046D, 0x08B1) }, /* Logitech QuickCam Notebook Pro */
+@@ -802,6 +803,11 @@ static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id
+ name = "Philips SPC 900NC webcam";
+ type_id = 740;
+ break;
++ case 0x032C:
++ PWC_INFO("Philips SPC 880NC USB webcam detected.\n");
++ name = "Philips SPC 880NC webcam";
++ type_id = 740;
++ break;
+ default:
+ return -ENODEV;
+ break;
+diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
+index 12b403e78d52..ef5815de2785 100644
+--- a/drivers/media/usb/usbvision/usbvision-video.c
++++ b/drivers/media/usb/usbvision/usbvision-video.c
+@@ -1524,9 +1524,23 @@ static int usbvision_probe(struct usb_interface *intf,
+
+ if (usbvision_device_data[model].interface >= 0)
+ interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
+- else
++ else if (ifnum < dev->actconfig->desc.bNumInterfaces)
+ interface = &dev->actconfig->interface[ifnum]->altsetting[0];
++ else {
++ dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
++ ifnum, dev->actconfig->desc.bNumInterfaces - 1);
++ ret = -ENODEV;
++ goto err_usb;
++ }
++
++ if (interface->desc.bNumEndpoints < 2) {
++ dev_err(&intf->dev, "interface %d has %d endpoints, but must"
++ " have minimum 2\n", ifnum, interface->desc.bNumEndpoints);
++ ret = -ENODEV;
++ goto err_usb;
++ }
+ endpoint = &interface->endpoint[1].desc;
++
+ if (!usb_endpoint_xfer_isoc(endpoint)) {
+ dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
+ __func__, ifnum);
+diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+index af635430524e..8085059ce925 100644
+--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
++++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+@@ -394,7 +394,8 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
+ get_user(kp->index, &up->index) ||
+ get_user(kp->type, &up->type) ||
+ get_user(kp->flags, &up->flags) ||
+- get_user(kp->memory, &up->memory))
++ get_user(kp->memory, &up->memory) ||
++ get_user(kp->length, &up->length))
+ return -EFAULT;
+
+ if (V4L2_TYPE_IS_OUTPUT(kp->type))
+@@ -406,9 +407,6 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
+ return -EFAULT;
+
+ if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
+- if (get_user(kp->length, &up->length))
+- return -EFAULT;
+-
+ num_planes = kp->length;
+ if (num_planes == 0) {
+ kp->m.planes = NULL;
+@@ -441,16 +439,14 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
+ } else {
+ switch (kp->memory) {
+ case V4L2_MEMORY_MMAP:
+- if (get_user(kp->length, &up->length) ||
+- get_user(kp->m.offset, &up->m.offset))
++ if (get_user(kp->m.offset, &up->m.offset))
+ return -EFAULT;
+ break;
+ case V4L2_MEMORY_USERPTR:
+ {
+ compat_long_t tmp;
+
+- if (get_user(kp->length, &up->length) ||
+- get_user(tmp, &up->m.userptr))
++ if (get_user(tmp, &up->m.userptr))
+ return -EFAULT;
+
+ kp->m.userptr = (unsigned long)compat_ptr(tmp);
+@@ -492,7 +488,8 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
+ copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
+ put_user(kp->sequence, &up->sequence) ||
+ put_user(kp->reserved2, &up->reserved2) ||
+- put_user(kp->reserved, &up->reserved))
++ put_user(kp->reserved, &up->reserved) ||
++ put_user(kp->length, &up->length))
+ return -EFAULT;
+
+ if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
+@@ -515,13 +512,11 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
+ } else {
+ switch (kp->memory) {
+ case V4L2_MEMORY_MMAP:
+- if (put_user(kp->length, &up->length) ||
+- put_user(kp->m.offset, &up->m.offset))
++ if (put_user(kp->m.offset, &up->m.offset))
+ return -EFAULT;
+ break;
+ case V4L2_MEMORY_USERPTR:
+- if (put_user(kp->length, &up->length) ||
+- put_user(kp->m.userptr, &up->m.userptr))
++ if (put_user(kp->m.userptr, &up->m.userptr))
+ return -EFAULT;
+ break;
+ case V4L2_MEMORY_OVERLAY:
+diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
+index 4cf38c39878a..883ba74fbc1e 100644
+--- a/drivers/misc/mei/bus.c
++++ b/drivers/misc/mei/bus.c
+@@ -238,6 +238,11 @@ static ssize_t ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,
+ dev = cl->dev;
+
+ mutex_lock(&dev->device_lock);
++ if (dev->dev_state != MEI_DEV_ENABLED) {
++ rets = -ENODEV;
++ goto out;
++ }
++
+ if (!mei_cl_is_connected(cl)) {
+ rets = -ENODEV;
+ goto out;
+@@ -287,6 +292,10 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)
+ dev = cl->dev;
+
+ mutex_lock(&dev->device_lock);
++ if (dev->dev_state != MEI_DEV_ENABLED) {
++ rets = -ENODEV;
++ goto out;
++ }
+
+ cb = mei_cl_read_cb(cl, NULL);
+ if (cb)
+diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
+index 9a39e0b7e583..0c864eb21f58 100644
+--- a/drivers/mmc/host/atmel-mci.c
++++ b/drivers/mmc/host/atmel-mci.c
+@@ -2281,6 +2281,23 @@ static int atmci_configure_dma(struct atmel_mci *host)
+ {
+ host->dma.chan = dma_request_slave_channel_reason(&host->pdev->dev,
+ "rxtx");
++
++ if (PTR_ERR(host->dma.chan) == -ENODEV) {
++ struct mci_platform_data *pdata = host->pdev->dev.platform_data;
++ dma_cap_mask_t mask;
++
++ if (!pdata || !pdata->dma_filter)
++ return -ENODEV;
++
++ dma_cap_zero(mask);
++ dma_cap_set(DMA_SLAVE, mask);
++
++ host->dma.chan = dma_request_channel(mask, pdata->dma_filter,
++ pdata->dma_slave);
++ if (!host->dma.chan)
++ host->dma.chan = ERR_PTR(-ENODEV);
++ }
++
+ if (IS_ERR(host->dma.chan))
+ return PTR_ERR(host->dma.chan);
+
+diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
+index ae19d83bb9de..055cad1e94d5 100644
+--- a/drivers/mmc/host/mmc_spi.c
++++ b/drivers/mmc/host/mmc_spi.c
+@@ -1436,6 +1436,12 @@ static int mmc_spi_probe(struct spi_device *spi)
+ host->pdata->cd_debounce);
+ if (status != 0)
+ goto fail_add_host;
++
++ /* The platform has a CD GPIO signal that may support
++ * interrupts, so let mmc_gpiod_request_cd_irq() decide
++ * if polling is needed or not.
++ */
++ mmc->caps &= ~MMC_CAP_NEEDS_POLL;
+ mmc_gpiod_request_cd_irq(mmc);
+ }
+
+diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
+index 065dc70caa1d..404a33b3c33e 100644
+--- a/drivers/mmc/host/sdhci-pxav3.c
++++ b/drivers/mmc/host/sdhci-pxav3.c
+@@ -136,6 +136,10 @@ static int armada_38x_quirks(struct platform_device *pdev,
+ struct resource *res;
+
+ host->quirks |= SDHCI_QUIRK_MISSING_CAPS;
++
++ host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
++ host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
++
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "conf-sdio3");
+ if (res) {
+@@ -149,7 +153,6 @@ static int armada_38x_quirks(struct platform_device *pdev,
+ * Configuration register, if the adjustment is not done,
+ * remove them from the capabilities.
+ */
+- host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
+ host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50);
+
+ dev_warn(&pdev->dev, "conf-sdio3 register not found: disabling SDR50 and DDR50 modes.\nConsider updating your dtb\n");
+@@ -160,7 +163,6 @@ static int armada_38x_quirks(struct platform_device *pdev,
+ * controller has different capabilities than the ones shown
+ * in its registers
+ */
+- host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
+ if (of_property_read_bool(np, "no-1-8-v")) {
+ host->caps &= ~SDHCI_CAN_VDD_180;
+ host->mmc->caps &= ~MMC_CAP_1_8V_DDR;
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index f47c4a8370be..c60dde917e49 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -681,9 +681,20 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
+ if (!data)
+ target_timeout = cmd->busy_timeout * 1000;
+ else {
+- target_timeout = data->timeout_ns / 1000;
+- if (host->clock)
+- target_timeout += data->timeout_clks / host->clock;
++ target_timeout = DIV_ROUND_UP(data->timeout_ns, 1000);
++ if (host->clock && data->timeout_clks) {
++ unsigned long long val;
++
++ /*
++ * data->timeout_clks is in units of clock cycles.
++ * host->clock is in Hz. target_timeout is in us.
++ * Hence, us = 1000000 * cycles / Hz. Round up.
++ */
++ val = 1000000 * data->timeout_clks;
++ if (do_div(val, host->clock))
++ target_timeout++;
++ target_timeout += val;
++ }
+ }
+
+ /*
+@@ -3126,14 +3137,14 @@ int sdhci_add_host(struct sdhci_host *host)
+ if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT)
+ host->timeout_clk *= 1000;
+
++ if (override_timeout_clk)
++ host->timeout_clk = override_timeout_clk;
++
+ mmc->max_busy_timeout = host->ops->get_max_timeout_count ?
+ host->ops->get_max_timeout_count(host) : 1 << 27;
+ mmc->max_busy_timeout /= host->timeout_clk;
+ }
+
+- if (override_timeout_clk)
+- host->timeout_clk = override_timeout_clk;
+-
+ mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23;
+ mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
+
+diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
+index 43b3392ffee7..652d01832873 100644
+--- a/drivers/mtd/onenand/onenand_base.c
++++ b/drivers/mtd/onenand/onenand_base.c
+@@ -2599,6 +2599,7 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
+ */
+ static int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs)
+ {
++ struct onenand_chip *this = mtd->priv;
+ int ret;
+
+ ret = onenand_block_isbad(mtd, ofs);
+@@ -2610,7 +2611,7 @@ static int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs)
+ }
+
+ onenand_get_device(mtd, FL_WRITING);
+- ret = mtd_block_markbad(mtd, ofs);
++ ret = this->block_markbad(mtd, ofs);
+ onenand_release_device(mtd);
+ return ret;
+ }
+diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
+index e07afc673d7a..e4c079612100 100644
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -3157,7 +3157,7 @@ static int mvneta_probe(struct platform_device *pdev)
+ dev->features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO;
+ dev->hw_features |= dev->features;
+ dev->vlan_features |= dev->features;
+- dev->priv_flags |= IFF_UNICAST_FLT;
++ dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
+ dev->gso_max_segs = MVNETA_MAX_TSO_SEGS;
+
+ err = register_netdev(dev);
+diff --git a/drivers/net/irda/irtty-sir.c b/drivers/net/irda/irtty-sir.c
+index 696852eb23c3..7a3f990c1935 100644
+--- a/drivers/net/irda/irtty-sir.c
++++ b/drivers/net/irda/irtty-sir.c
+@@ -430,16 +430,6 @@ static int irtty_open(struct tty_struct *tty)
+
+ /* Module stuff handled via irda_ldisc.owner - Jean II */
+
+- /* First make sure we're not already connected. */
+- if (tty->disc_data != NULL) {
+- priv = tty->disc_data;
+- if (priv && priv->magic == IRTTY_MAGIC) {
+- ret = -EEXIST;
+- goto out;
+- }
+- tty->disc_data = NULL; /* ### */
+- }
+-
+ /* stop the underlying driver */
+ irtty_stop_receiver(tty, TRUE);
+ if (tty->ops->stop)
+diff --git a/drivers/net/rionet.c b/drivers/net/rionet.c
+index dac7a0d9bb46..18cc2c8d5447 100644
+--- a/drivers/net/rionet.c
++++ b/drivers/net/rionet.c
+@@ -280,7 +280,7 @@ static void rionet_outb_msg_event(struct rio_mport *mport, void *dev_id, int mbo
+ struct net_device *ndev = dev_id;
+ struct rionet_private *rnet = netdev_priv(ndev);
+
+- spin_lock(&rnet->lock);
++ spin_lock(&rnet->tx_lock);
+
+ if (netif_msg_intr(rnet))
+ printk(KERN_INFO
+@@ -299,7 +299,7 @@ static void rionet_outb_msg_event(struct rio_mport *mport, void *dev_id, int mbo
+ if (rnet->tx_cnt < RIONET_TX_RING_SIZE)
+ netif_wake_queue(ndev);
+
+- spin_unlock(&rnet->lock);
++ spin_unlock(&rnet->tx_lock);
+ }
+
+ static int rionet_open(struct net_device *ndev)
+diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
+index 726ebe792813..26fb7b0b856c 100644
+--- a/drivers/of/of_reserved_mem.c
++++ b/drivers/of/of_reserved_mem.c
+@@ -31,11 +31,13 @@ int __init __weak early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
+ phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap,
+ phys_addr_t *res_base)
+ {
++ phys_addr_t base;
+ /*
+ * We use __memblock_alloc_base() because memblock_alloc_base()
+ * panic()s on allocation failure.
+ */
+- phys_addr_t base = __memblock_alloc_base(size, align, end);
++ end = !end ? MEMBLOCK_ALLOC_ANYWHERE : end;
++ base = __memblock_alloc_base(size, align, end);
+ if (!base)
+ return -ENOMEM;
+
+diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
+index c91185721345..25ad1b27ffae 100644
+--- a/drivers/pci/probe.c
++++ b/drivers/pci/probe.c
+@@ -176,6 +176,9 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
+ u16 orig_cmd;
+ struct pci_bus_region region, inverted_region;
+
++ if (dev->non_compliant_bars)
++ return 0;
++
+ mask = type ? PCI_ROM_ADDRESS_MASK : ~0;
+
+ /* No printks while decoding is disabled! */
+@@ -973,6 +976,8 @@ void set_pcie_port_type(struct pci_dev *pdev)
+ {
+ int pos;
+ u16 reg16;
++ int type;
++ struct pci_dev *parent;
+
+ pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+ if (!pos)
+@@ -982,6 +987,22 @@ void set_pcie_port_type(struct pci_dev *pdev)
+ pdev->pcie_flags_reg = reg16;
+ pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
+ pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
++
++ /*
++ * A Root Port is always the upstream end of a Link. No PCIe
++ * component has two Links. Two Links are connected by a Switch
++ * that has a Port on each Link and internal logic to connect the
++ * two Ports.
++ */
++ type = pci_pcie_type(pdev);
++ if (type == PCI_EXP_TYPE_ROOT_PORT)
++ pdev->has_secondary_link = 1;
++ else if (type == PCI_EXP_TYPE_UPSTREAM ||
++ type == PCI_EXP_TYPE_DOWNSTREAM) {
++ parent = pci_upstream_bridge(pdev);
++ if (!parent->has_secondary_link)
++ pdev->has_secondary_link = 1;
++ }
+ }
+
+ void set_pcie_hotplug_bridge(struct pci_dev *pdev)
+@@ -1098,6 +1119,7 @@ int pci_cfg_space_size(struct pci_dev *dev)
+ int pci_setup_device(struct pci_dev *dev)
+ {
+ u32 class;
++ u16 cmd;
+ u8 hdr_type;
+ struct pci_slot *slot;
+ int pos = 0;
+@@ -1145,6 +1167,16 @@ int pci_setup_device(struct pci_dev *dev)
+ /* device class may be changed after fixup */
+ class = dev->class >> 8;
+
++ if (dev->non_compliant_bars) {
++ pci_read_config_word(dev, PCI_COMMAND, &cmd);
++ if (cmd & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
++ dev_info(&dev->dev, "device has non-compliant BARs; disabling IO/MEM decoding\n");
++ cmd &= ~PCI_COMMAND_IO;
++ cmd &= ~PCI_COMMAND_MEMORY;
++ pci_write_config_word(dev, PCI_COMMAND, cmd);
++ }
++ }
++
+ switch (dev->hdr_type) { /* header type */
+ case PCI_HEADER_TYPE_NORMAL: /* standard header */
+ if (class == PCI_CLASS_BRIDGE_PCI)
+diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+index 8d908e3f42c3..03ad08ca7e3b 100644
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -786,7 +786,7 @@ static int bcm2835_pctl_dt_node_to_map(struct pinctrl_dev *pctldev,
+ }
+ if (num_pulls) {
+ err = of_property_read_u32_index(np, "brcm,pull",
+- (num_funcs > 1) ? i : 0, &pull);
++ (num_pulls > 1) ? i : 0, &pull);
+ if (err)
+ goto out;
+ err = bcm2835_pctl_dt_node_to_map_pull(pc, np, pin,
+diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
+index 9a92d13e3917..8cad6c165680 100644
+--- a/drivers/platform/x86/ideapad-laptop.c
++++ b/drivers/platform/x86/ideapad-laptop.c
+@@ -845,6 +845,20 @@ static const struct dmi_system_id no_hw_rfkill_list[] = {
+ },
+ },
+ {
++ .ident = "Lenovo ideapad Y700-15ISK",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ISK"),
++ },
++ },
++ {
++ .ident = "Lenovo ideapad Y700 Touch-15ISK",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700 Touch-15ISK"),
++ },
++ },
++ {
+ .ident = "Lenovo ideapad Y700-17ISK",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
+index 40fe65c91b41..18c9c0648bd0 100644
+--- a/drivers/scsi/aacraid/aacraid.h
++++ b/drivers/scsi/aacraid/aacraid.h
+@@ -939,6 +939,7 @@ struct fib {
+ */
+ struct list_head fiblink;
+ void *data;
++ u32 vector_no;
+ struct hw_fib *hw_fib_va; /* Actual shared object */
+ dma_addr_t hw_fib_pa; /* physical address of hw_fib*/
+ };
+@@ -2098,6 +2099,7 @@ static inline unsigned int cap_to_cyls(sector_t capacity, unsigned divisor)
+ #define AAC_OWNER_FIRMWARE 0x106
+
+ const char *aac_driverinfo(struct Scsi_Host *);
++void aac_fib_vector_assign(struct aac_dev *dev);
+ struct fib *aac_fib_alloc(struct aac_dev *dev);
+ int aac_fib_setup(struct aac_dev *dev);
+ void aac_fib_map_free(struct aac_dev *dev);
+diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
+index 4da574925284..4b79d9511778 100644
+--- a/drivers/scsi/aacraid/commsup.c
++++ b/drivers/scsi/aacraid/commsup.c
+@@ -83,13 +83,38 @@ static int fib_map_alloc(struct aac_dev *dev)
+
+ void aac_fib_map_free(struct aac_dev *dev)
+ {
+- pci_free_consistent(dev->pdev,
+- dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB),
+- dev->hw_fib_va, dev->hw_fib_pa);
++ if (dev->hw_fib_va && dev->max_fib_size) {
++ pci_free_consistent(dev->pdev,
++ (dev->max_fib_size *
++ (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)),
++ dev->hw_fib_va, dev->hw_fib_pa);
++ }
+ dev->hw_fib_va = NULL;
+ dev->hw_fib_pa = 0;
+ }
+
++void aac_fib_vector_assign(struct aac_dev *dev)
++{
++ u32 i = 0;
++ u32 vector = 1;
++ struct fib *fibptr = NULL;
++
++ for (i = 0, fibptr = &dev->fibs[i];
++ i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
++ i++, fibptr++) {
++ if ((dev->max_msix == 1) ||
++ (i > ((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1)
++ - dev->vector_cap))) {
++ fibptr->vector_no = 0;
++ } else {
++ fibptr->vector_no = vector;
++ vector++;
++ if (vector == dev->max_msix)
++ vector = 1;
++ }
++ }
++}
++
+ /**
+ * aac_fib_setup - setup the fibs
+ * @dev: Adapter to set up
+@@ -151,6 +176,12 @@ int aac_fib_setup(struct aac_dev * dev)
+ hw_fib_pa = hw_fib_pa +
+ dev->max_fib_size + sizeof(struct aac_fib_xporthdr);
+ }
++
++ /*
++ *Assign vector numbers to fibs
++ */
++ aac_fib_vector_assign(dev);
++
+ /*
+ * Add the fib chain to the free list
+ */
+diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
+index 4596e9dd757c..81315a14ef39 100644
+--- a/drivers/scsi/aacraid/src.c
++++ b/drivers/scsi/aacraid/src.c
+@@ -156,8 +156,8 @@ irqreturn_t aac_src_intr_message(int irq, void *dev_id)
+ break;
+ if (dev->msi_enabled && dev->max_msix > 1)
+ atomic_dec(&dev->rrq_outstanding[vector_no]);
+- aac_intr_normal(dev, handle-1, 0, isFastResponse, NULL);
+ dev->host_rrq[index++] = 0;
++ aac_intr_normal(dev, handle-1, 0, isFastResponse, NULL);
+ if (index == (vector_no + 1) * dev->vector_cap)
+ index = vector_no * dev->vector_cap;
+ dev->host_rrq_idx[vector_no] = index;
+@@ -448,36 +448,20 @@ static int aac_src_deliver_message(struct fib *fib)
+ dma_addr_t address;
+ struct aac_fib_xporthdr *pFibX;
+ u16 hdr_size = le16_to_cpu(fib->hw_fib_va->header.Size);
++ u16 vector_no;
+
+ atomic_inc(&q->numpending);
+
+ if (dev->msi_enabled && fib->hw_fib_va->header.Command != AifRequest &&
+ dev->max_msix > 1) {
+- u_int16_t vector_no, first_choice = 0xffff;
+-
+- vector_no = dev->fibs_pushed_no % dev->max_msix;
+- do {
+- vector_no += 1;
+- if (vector_no == dev->max_msix)
+- vector_no = 1;
+- if (atomic_read(&dev->rrq_outstanding[vector_no]) <
+- dev->vector_cap)
+- break;
+- if (0xffff == first_choice)
+- first_choice = vector_no;
+- else if (vector_no == first_choice)
+- break;
+- } while (1);
+- if (vector_no == first_choice)
+- vector_no = 0;
+- atomic_inc(&dev->rrq_outstanding[vector_no]);
+- if (dev->fibs_pushed_no == 0xffffffff)
+- dev->fibs_pushed_no = 0;
+- else
+- dev->fibs_pushed_no++;
++ vector_no = fib->vector_no;
+ fib->hw_fib_va->header.Handle += (vector_no << 16);
++ } else {
++ vector_no = 0;
+ }
+
++ atomic_inc(&dev->rrq_outstanding[vector_no]);
++
+ if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
+ /* Calculate the amount to the fibsize bits */
+ fibsize = (hdr_size + 127) / 128 - 1;
+diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
+index a2f2c774cd6b..82529f9830f3 100644
+--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
++++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
+@@ -1337,6 +1337,7 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
+ case AHC_DEV_Q_TAGGED:
+ scsi_change_queue_depth(sdev,
+ dev->openings + dev->active);
++ break;
+ default:
+ /*
+ * We allow the OS to queue 2 untagged transactions to
+diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
+index 1f74760ce86c..77a1598bc78d 100644
+--- a/drivers/scsi/be2iscsi/be_main.c
++++ b/drivers/scsi/be2iscsi/be_main.c
+@@ -4434,6 +4434,7 @@ put_shost:
+ scsi_host_put(phba->shost);
+ free_kset:
+ iscsi_boot_destroy_kset(phba->boot_kset);
++ phba->boot_kset = NULL;
+ return -ENOMEM;
+ }
+
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index 3bbf4853733c..ec192939750e 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -652,7 +652,8 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
+ else
+ hp->dxfer_direction = (mxsize > 0) ? SG_DXFER_FROM_DEV : SG_DXFER_NONE;
+ hp->dxfer_len = mxsize;
+- if (hp->dxfer_direction == SG_DXFER_TO_DEV)
++ if ((hp->dxfer_direction == SG_DXFER_TO_DEV) ||
++ (hp->dxfer_direction == SG_DXFER_TO_FROM_DEV))
+ hp->dxferp = (char __user *)buf + cmd_size;
+ else
+ hp->dxferp = NULL;
+diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
+index c66affd993aa..34b3a522668f 100644
+--- a/drivers/staging/comedi/drivers/ni_mio_common.c
++++ b/drivers/staging/comedi/drivers/ni_mio_common.c
+@@ -247,24 +247,24 @@ static void ni_writel(struct comedi_device *dev, uint32_t data, int reg)
+ {
+ if (dev->mmio)
+ writel(data, dev->mmio + reg);
+-
+- outl(data, dev->iobase + reg);
++ else
++ outl(data, dev->iobase + reg);
+ }
+
+ static void ni_writew(struct comedi_device *dev, uint16_t data, int reg)
+ {
+ if (dev->mmio)
+ writew(data, dev->mmio + reg);
+-
+- outw(data, dev->iobase + reg);
++ else
++ outw(data, dev->iobase + reg);
+ }
+
+ static void ni_writeb(struct comedi_device *dev, uint8_t data, int reg)
+ {
+ if (dev->mmio)
+ writeb(data, dev->mmio + reg);
+-
+- outb(data, dev->iobase + reg);
++ else
++ outb(data, dev->iobase + reg);
+ }
+
+ static uint32_t ni_readl(struct comedi_device *dev, int reg)
+diff --git a/drivers/staging/comedi/drivers/ni_tiocmd.c b/drivers/staging/comedi/drivers/ni_tiocmd.c
+index 9b124b09e914..bfd4c3b12cd0 100644
+--- a/drivers/staging/comedi/drivers/ni_tiocmd.c
++++ b/drivers/staging/comedi/drivers/ni_tiocmd.c
+@@ -92,7 +92,7 @@ static int ni_tio_input_inttrig(struct comedi_device *dev,
+ unsigned long flags;
+ int ret = 0;
+
+- if (trig_num != cmd->start_src)
++ if (trig_num != cmd->start_arg)
+ return -EINVAL;
+
+ spin_lock_irqsave(&counter->lock, flags);
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index be12b9d84052..e8848e7fe5d4 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -2617,8 +2617,6 @@ void target_wait_for_sess_cmds(struct se_session *se_sess)
+
+ list_for_each_entry_safe(se_cmd, tmp_cmd,
+ &se_sess->sess_wait_list, se_cmd_list) {
+- list_del_init(&se_cmd->se_cmd_list);
+-
+ pr_debug("Waiting for se_cmd: %p t_state: %d, fabric state:"
+ " %d\n", se_cmd, se_cmd->t_state,
+ se_cmd->se_tfo->get_cmd_state(se_cmd));
+diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
+index a3282bfb343d..09f1e5f2f013 100644
+--- a/drivers/thermal/thermal_core.c
++++ b/drivers/thermal/thermal_core.c
+@@ -391,6 +391,10 @@ static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
+ {
+ enum thermal_trip_type type;
+
++ /* Ignore disabled trip points */
++ if (test_bit(trip, &tz->trips_disabled))
++ return;
++
+ tz->ops->get_trip_type(tz, trip, &type);
+
+ if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
+@@ -1487,6 +1491,7 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
+ {
+ struct thermal_zone_device *tz;
+ enum thermal_trip_type trip_type;
++ int trip_temp;
+ int result;
+ int count;
+ int passive = 0;
+@@ -1557,9 +1562,15 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
+ goto unregister;
+
+ for (count = 0; count < trips; count++) {
+- tz->ops->get_trip_type(tz, count, &trip_type);
++ if (tz->ops->get_trip_type(tz, count, &trip_type))
++ set_bit(count, &tz->trips_disabled);
+ if (trip_type == THERMAL_TRIP_PASSIVE)
+ passive = 1;
++ if (tz->ops->get_trip_temp(tz, count, &trip_temp))
++ set_bit(count, &tz->trips_disabled);
++ /* Check for bogus trip points */
++ if (trip_temp == 0)
++ set_bit(count, &tz->trips_disabled);
+ }
+
+ if (!passive) {
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index df3deb000a80..09084c9da8b7 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1118,6 +1118,9 @@ static int acm_probe(struct usb_interface *intf,
+ if (quirks == NO_UNION_NORMAL) {
+ data_interface = usb_ifnum_to_if(usb_dev, 1);
+ control_interface = usb_ifnum_to_if(usb_dev, 0);
++ /* we would crash */
++ if (!data_interface || !control_interface)
++ return -ENODEV;
+ goto skip_normal_probe;
+ }
+
+diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
+index 818369afff63..7792c0e2d3b6 100644
+--- a/drivers/usb/core/driver.c
++++ b/drivers/usb/core/driver.c
+@@ -499,11 +499,15 @@ static int usb_unbind_interface(struct device *dev)
+ int usb_driver_claim_interface(struct usb_driver *driver,
+ struct usb_interface *iface, void *priv)
+ {
+- struct device *dev = &iface->dev;
++ struct device *dev;
+ struct usb_device *udev;
+ int retval = 0;
+ int lpm_disable_error;
+
++ if (!iface)
++ return -ENODEV;
++
++ dev = &iface->dev;
+ if (dev->driver)
+ return -EBUSY;
+
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index e56ad83b35a4..ae9eb716c02f 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -4237,7 +4237,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
+ {
+ struct usb_device *hdev = hub->hdev;
+ struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
+- int i, j, retval;
++ int retries, operations, retval, i;
+ unsigned delay = HUB_SHORT_RESET_TIME;
+ enum usb_device_speed oldspeed = udev->speed;
+ const char *speed;
+@@ -4339,7 +4339,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
+ * first 8 bytes of the device descriptor to get the ep0 maxpacket
+ * value.
+ */
+- for (i = 0; i < GET_DESCRIPTOR_TRIES; (++i, msleep(100))) {
++ for (retries = 0; retries < GET_DESCRIPTOR_TRIES; (++retries, msleep(100))) {
+ bool did_new_scheme = false;
+
+ if (use_new_scheme(udev, retry_counter)) {
+@@ -4366,7 +4366,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
+ * 255 is for WUSB devices, we actually need to use
+ * 512 (WUSB1.0[4.8.1]).
+ */
+- for (j = 0; j < 3; ++j) {
++ for (operations = 0; operations < 3; ++operations) {
+ buf->bMaxPacketSize0 = 0;
+ r = usb_control_msg(udev, usb_rcvaddr0pipe(),
+ USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
+@@ -4386,7 +4386,13 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
+ r = -EPROTO;
+ break;
+ }
+- if (r == 0)
++ /*
++ * Some devices time out if they are powered on
++ * when already connected. They need a second
++ * reset. But only on the first attempt,
++ * lest we get into a time out/reset loop
++ */
++ if (r == 0 || (r == -ETIMEDOUT && retries == 0))
+ break;
+ }
+ udev->descriptor.bMaxPacketSize0 =
+@@ -4418,7 +4424,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
+ * authorization will assign the final address.
+ */
+ if (udev->wusb == 0) {
+- for (j = 0; j < SET_ADDRESS_TRIES; ++j) {
++ for (operations = 0; operations < SET_ADDRESS_TRIES; ++operations) {
+ retval = hub_set_address(udev, devnum);
+ if (retval >= 0)
+ break;
+diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
+index c6bfd13f6c92..1950e87b4219 100644
+--- a/drivers/usb/misc/iowarrior.c
++++ b/drivers/usb/misc/iowarrior.c
+@@ -787,6 +787,12 @@ static int iowarrior_probe(struct usb_interface *interface,
+ iface_desc = interface->cur_altsetting;
+ dev->product_id = le16_to_cpu(udev->descriptor.idProduct);
+
++ if (iface_desc->desc.bNumEndpoints < 1) {
++ dev_err(&interface->dev, "Invalid number of endpoints\n");
++ retval = -EINVAL;
++ goto error;
++ }
++
+ /* set up the endpoint information */
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
+index 75e4979e6c15..637ee7754ad5 100644
+--- a/drivers/usb/storage/uas.c
++++ b/drivers/usb/storage/uas.c
+@@ -812,7 +812,7 @@ static struct scsi_host_template uas_host_template = {
+ .slave_configure = uas_slave_configure,
+ .eh_abort_handler = uas_eh_abort_handler,
+ .eh_bus_reset_handler = uas_eh_bus_reset_handler,
+- .can_queue = 65536, /* Is there a limit on the _host_ ? */
++ .can_queue = MAX_CMNDS,
+ .this_id = -1,
+ .sg_tablesize = SG_NONE,
+ .cmd_per_lun = 1, /* until we override it */
+diff --git a/drivers/watchdog/rc32434_wdt.c b/drivers/watchdog/rc32434_wdt.c
+index 71e78ef4b736..3a75f3b53452 100644
+--- a/drivers/watchdog/rc32434_wdt.c
++++ b/drivers/watchdog/rc32434_wdt.c
+@@ -237,7 +237,7 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
+ return -EINVAL;
+ /* Fall through */
+ case WDIOC_GETTIMEOUT:
+- return copy_to_user(argp, &timeout, sizeof(int));
++ return copy_to_user(argp, &timeout, sizeof(int)) ? -EFAULT : 0;
+ default:
+ return -ENOTTY;
+ }
+diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
+index df9932b00d08..1848705506ff 100644
+--- a/fs/btrfs/async-thread.c
++++ b/fs/btrfs/async-thread.c
+@@ -316,8 +316,8 @@ static inline void __btrfs_queue_work(struct __btrfs_workqueue *wq,
+ list_add_tail(&work->ordered_list, &wq->ordered_list);
+ spin_unlock_irqrestore(&wq->list_lock, flags);
+ }
+- queue_work(wq->normal_wq, &work->normal_work);
+ trace_btrfs_work_queued(work);
++ queue_work(wq->normal_wq, &work->normal_work);
+ }
+
+ void btrfs_queue_work(struct btrfs_workqueue *wq,
+diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
+index 99e8f60c7962..e4ca0f5746ae 100644
+--- a/fs/btrfs/disk-io.c
++++ b/fs/btrfs/disk-io.c
+@@ -1574,8 +1574,23 @@ int btrfs_init_fs_root(struct btrfs_root *root)
+ ret = get_anon_bdev(&root->anon_dev);
+ if (ret)
+ goto free_writers;
++
++ mutex_lock(&root->objectid_mutex);
++ ret = btrfs_find_highest_objectid(root,
++ &root->highest_objectid);
++ if (ret) {
++ mutex_unlock(&root->objectid_mutex);
++ goto free_root_dev;
++ }
++
++ ASSERT(root->highest_objectid <= BTRFS_LAST_FREE_OBJECTID);
++
++ mutex_unlock(&root->objectid_mutex);
++
+ return 0;
+
++free_root_dev:
++ free_anon_bdev(root->anon_dev);
+ free_writers:
+ btrfs_free_subvolume_writers(root->subv_writers);
+ fail:
+@@ -2622,6 +2637,7 @@ int open_ctree(struct super_block *sb,
+ if (btrfs_check_super_csum(bh->b_data)) {
+ printk(KERN_ERR "BTRFS: superblock checksum mismatch\n");
+ err = -EINVAL;
++ brelse(bh);
+ goto fail_alloc;
+ }
+
+@@ -2849,6 +2865,18 @@ retry_root_backup:
+ tree_root->commit_root = btrfs_root_node(tree_root);
+ btrfs_set_root_refs(&tree_root->root_item, 1);
+
++ mutex_lock(&tree_root->objectid_mutex);
++ ret = btrfs_find_highest_objectid(tree_root,
++ &tree_root->highest_objectid);
++ if (ret) {
++ mutex_unlock(&tree_root->objectid_mutex);
++ goto recovery_tree_root;
++ }
++
++ ASSERT(tree_root->highest_objectid <= BTRFS_LAST_FREE_OBJECTID);
++
++ mutex_unlock(&tree_root->objectid_mutex);
++
+ ret = btrfs_read_roots(fs_info, tree_root);
+ if (ret)
+ goto recovery_tree_root;
+diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
+index 3c1938000a5d..d1ae1322648a 100644
+--- a/fs/btrfs/extent-tree.c
++++ b/fs/btrfs/extent-tree.c
+@@ -3975,6 +3975,11 @@ commit_trans:
+ !atomic_read(&root->fs_info->open_ioctl_trans)) {
+ need_commit--;
+
++ if (need_commit > 0) {
++ btrfs_start_delalloc_roots(fs_info, 0, -1);
++ btrfs_wait_ordered_roots(fs_info, -1);
++ }
++
+ trans = btrfs_join_transaction(root);
+ if (IS_ERR(trans))
+ return PTR_ERR(trans);
+diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
+index d4a582ac3f73..9f06e8b4add1 100644
+--- a/fs/btrfs/inode-map.c
++++ b/fs/btrfs/inode-map.c
+@@ -515,7 +515,7 @@ out:
+ return ret;
+ }
+
+-static int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid)
++int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid)
+ {
+ struct btrfs_path *path;
+ int ret;
+@@ -555,13 +555,6 @@ int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid)
+ int ret;
+ mutex_lock(&root->objectid_mutex);
+
+- if (unlikely(root->highest_objectid < BTRFS_FIRST_FREE_OBJECTID)) {
+- ret = btrfs_find_highest_objectid(root,
+- &root->highest_objectid);
+- if (ret)
+- goto out;
+- }
+-
+ if (unlikely(root->highest_objectid >= BTRFS_LAST_FREE_OBJECTID)) {
+ ret = -ENOSPC;
+ goto out;
+diff --git a/fs/btrfs/inode-map.h b/fs/btrfs/inode-map.h
+index ddb347bfee23..c8e864b2d530 100644
+--- a/fs/btrfs/inode-map.h
++++ b/fs/btrfs/inode-map.h
+@@ -9,5 +9,6 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
+ struct btrfs_trans_handle *trans);
+
+ int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid);
++int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid);
+
+ #endif
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index b114a0539d3d..f751ab47e9a5 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -6421,7 +6421,7 @@ out_unlock_inode:
+ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
+ struct dentry *dentry)
+ {
+- struct btrfs_trans_handle *trans;
++ struct btrfs_trans_handle *trans = NULL;
+ struct btrfs_root *root = BTRFS_I(dir)->root;
+ struct inode *inode = d_inode(old_dentry);
+ u64 index;
+@@ -6447,6 +6447,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
+ trans = btrfs_start_transaction(root, 5);
+ if (IS_ERR(trans)) {
+ err = PTR_ERR(trans);
++ trans = NULL;
+ goto fail;
+ }
+
+@@ -6480,9 +6481,10 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
+ btrfs_log_new_name(trans, inode, NULL, parent);
+ }
+
+- btrfs_end_transaction(trans, root);
+ btrfs_balance_delayed_items(root);
+ fail:
++ if (trans)
++ btrfs_end_transaction(trans, root);
+ if (drop_inode) {
+ inode_dec_link_count(inode);
+ iput(inode);
+@@ -8416,15 +8418,28 @@ int btrfs_readpage(struct file *file, struct page *page)
+ static int btrfs_writepage(struct page *page, struct writeback_control *wbc)
+ {
+ struct extent_io_tree *tree;
+-
++ struct inode *inode = page->mapping->host;
++ int ret;
+
+ if (current->flags & PF_MEMALLOC) {
+ redirty_page_for_writepage(wbc, page);
+ unlock_page(page);
+ return 0;
+ }
++
++ /*
++ * If we are under memory pressure we will call this directly from the
++ * VM, we need to make sure we have the inode referenced for the ordered
++ * extent. If not just return like we didn't do anything.
++ */
++ if (!igrab(inode)) {
++ redirty_page_for_writepage(wbc, page);
++ return AOP_WRITEPAGE_ACTIVATE;
++ }
+ tree = &BTRFS_I(page->mapping->host)->io_tree;
+- return extent_write_full_page(tree, page, btrfs_get_extent, wbc);
++ ret = extent_write_full_page(tree, page, btrfs_get_extent, wbc);
++ btrfs_add_delayed_iput(inode);
++ return ret;
+ }
+
+ static int btrfs_writepages(struct address_space *mapping,
+@@ -9505,9 +9520,11 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
+ /*
+ * 2 items for inode item and ref
+ * 2 items for dir items
++ * 1 item for updating parent inode item
++ * 1 item for the inline extent item
+ * 1 item for xattr if selinux is on
+ */
+- trans = btrfs_start_transaction(root, 5);
++ trans = btrfs_start_transaction(root, 7);
+ if (IS_ERR(trans))
+ return PTR_ERR(trans);
+
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index 87c720865ebf..5189d54417ab 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -567,6 +567,10 @@ static noinline int create_subvol(struct inode *dir,
+ goto fail;
+ }
+
++ mutex_lock(&new_root->objectid_mutex);
++ new_root->highest_objectid = new_dirid;
++ mutex_unlock(&new_root->objectid_mutex);
++
+ /*
+ * insert the directory item
+ */
+diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
+index a1216f9b4917..b2c1ab7cae78 100644
+--- a/fs/btrfs/send.c
++++ b/fs/btrfs/send.c
+@@ -1462,7 +1462,21 @@ static int read_symlink(struct btrfs_root *root,
+ ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
+ if (ret < 0)
+ goto out;
+- BUG_ON(ret);
++ if (ret) {
++ /*
++ * An empty symlink inode. Can happen in rare error paths when
++ * creating a symlink (transaction committed before the inode
++ * eviction handler removed the symlink inode items and a crash
++ * happened in between or the subvol was snapshoted in between).
++ * Print an informative message to dmesg/syslog so that the user
++ * can delete the symlink.
++ */
++ btrfs_err(root->fs_info,
++ "Found empty symlink inode %llu at root %llu",
++ ino, root->root_key.objectid);
++ ret = -EIO;
++ goto out;
++ }
+
+ ei = btrfs_item_ptr(path->nodes[0], path->slots[0],
+ struct btrfs_file_extent_item);
+diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
+index 9e66f5e724db..70734d89193a 100644
+--- a/fs/btrfs/super.c
++++ b/fs/btrfs/super.c
+@@ -1822,6 +1822,8 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
+ * there are other factors that may change the result (like a new metadata
+ * chunk).
+ *
++ * If metadata is exhausted, f_bavail will be 0.
++ *
+ * FIXME: not accurate for mixed block groups, total and free/used are ok,
+ * available appears slightly larger.
+ */
+@@ -1833,11 +1835,13 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
+ struct btrfs_space_info *found;
+ u64 total_used = 0;
+ u64 total_free_data = 0;
++ u64 total_free_meta = 0;
+ int bits = dentry->d_sb->s_blocksize_bits;
+ __be32 *fsid = (__be32 *)fs_info->fsid;
+ unsigned factor = 1;
+ struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;
+ int ret;
++ u64 thresh = 0;
+
+ /*
+ * holding chunk_muext to avoid allocating new chunks, holding
+@@ -1863,6 +1867,8 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
+ }
+ }
+ }
++ if (found->flags & BTRFS_BLOCK_GROUP_METADATA)
++ total_free_meta += found->disk_total - found->disk_used;
+
+ total_used += found->disk_used;
+ }
+@@ -1885,6 +1891,24 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
+ buf->f_bavail += div_u64(total_free_data, factor);
+ buf->f_bavail = buf->f_bavail >> bits;
+
++ /*
++ * We calculate the remaining metadata space minus global reserve. If
++ * this is (supposedly) smaller than zero, there's no space. But this
++ * does not hold in practice, the exhausted state happens where's still
++ * some positive delta. So we apply some guesswork and compare the
++ * delta to a 4M threshold. (Practically observed delta was ~2M.)
++ *
++ * We probably cannot calculate the exact threshold value because this
++ * depends on the internal reservations requested by various
++ * operations, so some operations that consume a few metadata will
++ * succeed even if the Avail is zero. But this is better than the other
++ * way around.
++ */
++ thresh = 4 * 1024 * 1024;
++
++ if (total_free_meta - thresh < block_rsv->size)
++ buf->f_bavail = 0;
++
+ buf->f_type = BTRFS_SUPER_MAGIC;
+ buf->f_bsize = dentry->d_sb->s_blocksize;
+ buf->f_namelen = BTRFS_NAME_LEN;
+diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
+index 5113b7257b45..18a3573e1444 100644
+--- a/fs/btrfs/volumes.c
++++ b/fs/btrfs/volumes.c
+@@ -152,6 +152,7 @@ static struct btrfs_device *__alloc_device(void)
+ spin_lock_init(&dev->reada_lock);
+ atomic_set(&dev->reada_in_flight, 0);
+ atomic_set(&dev->dev_stats_ccnt, 0);
++ btrfs_device_data_ordered_init(dev);
+ INIT_RADIX_TREE(&dev->reada_zones, GFP_NOFS & ~__GFP_WAIT);
+ INIT_RADIX_TREE(&dev->reada_extents, GFP_NOFS & ~__GFP_WAIT);
+
+diff --git a/fs/coredump.c b/fs/coredump.c
+index 8dd099dc5f9b..26d05e3bc6db 100644
+--- a/fs/coredump.c
++++ b/fs/coredump.c
+@@ -32,6 +32,10 @@
+ #include <linux/pipe_fs_i.h>
+ #include <linux/oom.h>
+ #include <linux/compat.h>
++#include <linux/sched.h>
++#include <linux/fs.h>
++#include <linux/path.h>
++#include <linux/timekeeping.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/mmu_context.h>
+@@ -225,9 +229,10 @@ static int format_corename(struct core_name *cn, struct coredump_params *cprm)
+ break;
+ /* UNIX time of coredump */
+ case 't': {
+- struct timeval tv;
+- do_gettimeofday(&tv);
+- err = cn_printf(cn, "%lu", tv.tv_sec);
++ time64_t time;
++
++ time = ktime_get_real_seconds();
++ err = cn_printf(cn, "%lld", time);
+ break;
+ }
+ /* hostname */
+@@ -621,6 +626,8 @@ void do_coredump(const siginfo_t *siginfo)
+ }
+ } else {
+ struct inode *inode;
++ int open_flags = O_CREAT | O_RDWR | O_NOFOLLOW |
++ O_LARGEFILE | O_EXCL;
+
+ if (cprm.limit < binfmt->min_coredump)
+ goto fail_unlock;
+@@ -659,10 +666,27 @@ void do_coredump(const siginfo_t *siginfo)
+ * what matters is that at least one of the two processes
+ * writes its coredump successfully, not which one.
+ */
+- cprm.file = filp_open(cn.corename,
+- O_CREAT | 2 | O_NOFOLLOW |
+- O_LARGEFILE | O_EXCL,
+- 0600);
++ if (need_suid_safe) {
++ /*
++ * Using user namespaces, normal user tasks can change
++ * their current->fs->root to point to arbitrary
++ * directories. Since the intention of the "only dump
++ * with a fully qualified path" rule is to control where
++ * coredumps may be placed using root privileges,
++ * current->fs->root must not be used. Instead, use the
++ * root directory of init_task.
++ */
++ struct path root;
++
++ task_lock(&init_task);
++ get_fs_root(init_task.fs, &root);
++ task_unlock(&init_task);
++ cprm.file = file_open_root(root.dentry, root.mnt,
++ cn.corename, open_flags, 0600);
++ path_put(&root);
++ } else {
++ cprm.file = filp_open(cn.corename, open_flags, 0600);
++ }
+ if (IS_ERR(cprm.file))
+ goto fail_unlock;
+
+diff --git a/fs/dax.c b/fs/dax.c
+index 6f65f00e58ec..4bb5b7cd5dfd 100644
+--- a/fs/dax.c
++++ b/fs/dax.c
+@@ -309,14 +309,11 @@ static int dax_insert_mapping(struct inode *inode, struct buffer_head *bh,
+ out:
+ i_mmap_unlock_read(mapping);
+
+- if (bh->b_end_io)
+- bh->b_end_io(bh, 1);
+-
+ return error;
+ }
+
+ static int do_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
+- get_block_t get_block)
++ get_block_t get_block, dax_iodone_t complete_unwritten)
+ {
+ struct file *file = vma->vm_file;
+ struct address_space *mapping = file->f_mapping;
+@@ -417,7 +414,19 @@ static int do_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
+ page_cache_release(page);
+ }
+
++ /*
++ * If we successfully insert the new mapping over an unwritten extent,
++ * we need to ensure we convert the unwritten extent. If there is an
++ * error inserting the mapping, the filesystem needs to leave it as
++ * unwritten to prevent exposure of the stale underlying data to
++ * userspace, but we still need to call the completion function so
++ * the private resources on the mapping buffer can be released. We
++ * indicate what the callback should do via the uptodate variable, same
++ * as for normal BH based IO completions.
++ */
+ error = dax_insert_mapping(inode, &bh, vma, vmf);
++ if (buffer_unwritten(&bh))
++ complete_unwritten(&bh, !error);
+
+ out:
+ if (error == -ENOMEM)
+@@ -445,7 +454,7 @@ static int do_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
+ * fault handler for DAX files.
+ */
+ int dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
+- get_block_t get_block)
++ get_block_t get_block, dax_iodone_t complete_unwritten)
+ {
+ int result;
+ struct super_block *sb = file_inode(vma->vm_file)->i_sb;
+@@ -454,7 +463,7 @@ int dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
+ sb_start_pagefault(sb);
+ file_update_time(vma->vm_file);
+ }
+- result = do_dax_fault(vma, vmf, get_block);
++ result = do_dax_fault(vma, vmf, get_block, complete_unwritten);
+ if (vmf->flags & FAULT_FLAG_WRITE)
+ sb_end_pagefault(sb);
+
+diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c
+index 90001da9abfd..66842e55c48c 100644
+--- a/fs/efivarfs/file.c
++++ b/fs/efivarfs/file.c
+@@ -10,6 +10,7 @@
+ #include <linux/efi.h>
+ #include <linux/fs.h>
+ #include <linux/slab.h>
++#include <linux/mount.h>
+
+ #include "internal.h"
+
+@@ -103,9 +104,78 @@ out_free:
+ return size;
+ }
+
++static int
++efivarfs_ioc_getxflags(struct file *file, void __user *arg)
++{
++ struct inode *inode = file->f_mapping->host;
++ unsigned int i_flags;
++ unsigned int flags = 0;
++
++ i_flags = inode->i_flags;
++ if (i_flags & S_IMMUTABLE)
++ flags |= FS_IMMUTABLE_FL;
++
++ if (copy_to_user(arg, &flags, sizeof(flags)))
++ return -EFAULT;
++ return 0;
++}
++
++static int
++efivarfs_ioc_setxflags(struct file *file, void __user *arg)
++{
++ struct inode *inode = file->f_mapping->host;
++ unsigned int flags;
++ unsigned int i_flags = 0;
++ int error;
++
++ if (!inode_owner_or_capable(inode))
++ return -EACCES;
++
++ if (copy_from_user(&flags, arg, sizeof(flags)))
++ return -EFAULT;
++
++ if (flags & ~FS_IMMUTABLE_FL)
++ return -EOPNOTSUPP;
++
++ if (!capable(CAP_LINUX_IMMUTABLE))
++ return -EPERM;
++
++ if (flags & FS_IMMUTABLE_FL)
++ i_flags |= S_IMMUTABLE;
++
++
++ error = mnt_want_write_file(file);
++ if (error)
++ return error;
++
++ mutex_lock(&inode->i_mutex);
++ inode_set_flags(inode, i_flags, S_IMMUTABLE);
++ mutex_unlock(&inode->i_mutex);
++
++ mnt_drop_write_file(file);
++
++ return 0;
++}
++
++long
++efivarfs_file_ioctl(struct file *file, unsigned int cmd, unsigned long p)
++{
++ void __user *arg = (void __user *)p;
++
++ switch (cmd) {
++ case FS_IOC_GETFLAGS:
++ return efivarfs_ioc_getxflags(file, arg);
++ case FS_IOC_SETFLAGS:
++ return efivarfs_ioc_setxflags(file, arg);
++ }
++
++ return -ENOTTY;
++}
++
+ const struct file_operations efivarfs_file_operations = {
+ .open = simple_open,
+ .read = efivarfs_file_read,
+ .write = efivarfs_file_write,
+ .llseek = no_llseek,
++ .unlocked_ioctl = efivarfs_file_ioctl,
+ };
+diff --git a/fs/efivarfs/inode.c b/fs/efivarfs/inode.c
+index 3381b9da9ee6..e2ab6d0497f2 100644
+--- a/fs/efivarfs/inode.c
++++ b/fs/efivarfs/inode.c
+@@ -15,7 +15,8 @@
+ #include "internal.h"
+
+ struct inode *efivarfs_get_inode(struct super_block *sb,
+- const struct inode *dir, int mode, dev_t dev)
++ const struct inode *dir, int mode,
++ dev_t dev, bool is_removable)
+ {
+ struct inode *inode = new_inode(sb);
+
+@@ -23,6 +24,7 @@ struct inode *efivarfs_get_inode(struct super_block *sb,
+ inode->i_ino = get_next_ino();
+ inode->i_mode = mode;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
++ inode->i_flags = is_removable ? 0 : S_IMMUTABLE;
+ switch (mode & S_IFMT) {
+ case S_IFREG:
+ inode->i_fop = &efivarfs_file_operations;
+@@ -102,22 +104,17 @@ static void efivarfs_hex_to_guid(const char *str, efi_guid_t *guid)
+ static int efivarfs_create(struct inode *dir, struct dentry *dentry,
+ umode_t mode, bool excl)
+ {
+- struct inode *inode;
++ struct inode *inode = NULL;
+ struct efivar_entry *var;
+ int namelen, i = 0, err = 0;
++ bool is_removable = false;
+
+ if (!efivarfs_valid_name(dentry->d_name.name, dentry->d_name.len))
+ return -EINVAL;
+
+- inode = efivarfs_get_inode(dir->i_sb, dir, mode, 0);
+- if (!inode)
+- return -ENOMEM;
+-
+ var = kzalloc(sizeof(struct efivar_entry), GFP_KERNEL);
+- if (!var) {
+- err = -ENOMEM;
+- goto out;
+- }
++ if (!var)
++ return -ENOMEM;
+
+ /* length of the variable name itself: remove GUID and separator */
+ namelen = dentry->d_name.len - EFI_VARIABLE_GUID_LEN - 1;
+@@ -125,6 +122,16 @@ static int efivarfs_create(struct inode *dir, struct dentry *dentry,
+ efivarfs_hex_to_guid(dentry->d_name.name + namelen + 1,
+ &var->var.VendorGuid);
+
++ if (efivar_variable_is_removable(var->var.VendorGuid,
++ dentry->d_name.name, namelen))
++ is_removable = true;
++
++ inode = efivarfs_get_inode(dir->i_sb, dir, mode, 0, is_removable);
++ if (!inode) {
++ err = -ENOMEM;
++ goto out;
++ }
++
+ for (i = 0; i < namelen; i++)
+ var->var.VariableName[i] = dentry->d_name.name[i];
+
+@@ -138,7 +145,8 @@ static int efivarfs_create(struct inode *dir, struct dentry *dentry,
+ out:
+ if (err) {
+ kfree(var);
+- iput(inode);
++ if (inode)
++ iput(inode);
+ }
+ return err;
+ }
+diff --git a/fs/efivarfs/internal.h b/fs/efivarfs/internal.h
+index b5ff16addb7c..b4505188e799 100644
+--- a/fs/efivarfs/internal.h
++++ b/fs/efivarfs/internal.h
+@@ -15,7 +15,8 @@ extern const struct file_operations efivarfs_file_operations;
+ extern const struct inode_operations efivarfs_dir_inode_operations;
+ extern bool efivarfs_valid_name(const char *str, int len);
+ extern struct inode *efivarfs_get_inode(struct super_block *sb,
+- const struct inode *dir, int mode, dev_t dev);
++ const struct inode *dir, int mode, dev_t dev,
++ bool is_removable);
+
+ extern struct list_head efivarfs_list;
+
+diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c
+index 86a2121828c3..abb244b06024 100644
+--- a/fs/efivarfs/super.c
++++ b/fs/efivarfs/super.c
+@@ -118,8 +118,9 @@ static int efivarfs_callback(efi_char16_t *name16, efi_guid_t vendor,
+ struct dentry *dentry, *root = sb->s_root;
+ unsigned long size = 0;
+ char *name;
+- int len, i;
++ int len;
+ int err = -ENOMEM;
++ bool is_removable = false;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+@@ -128,15 +129,17 @@ static int efivarfs_callback(efi_char16_t *name16, efi_guid_t vendor,
+ memcpy(entry->var.VariableName, name16, name_size);
+ memcpy(&(entry->var.VendorGuid), &vendor, sizeof(efi_guid_t));
+
+- len = ucs2_strlen(entry->var.VariableName);
++ len = ucs2_utf8size(entry->var.VariableName);
+
+ /* name, plus '-', plus GUID, plus NUL*/
+ name = kmalloc(len + 1 + EFI_VARIABLE_GUID_LEN + 1, GFP_KERNEL);
+ if (!name)
+ goto fail;
+
+- for (i = 0; i < len; i++)
+- name[i] = entry->var.VariableName[i] & 0xFF;
++ ucs2_as_utf8(name, entry->var.VariableName, len);
++
++ if (efivar_variable_is_removable(entry->var.VendorGuid, name, len))
++ is_removable = true;
+
+ name[len] = '-';
+
+@@ -144,7 +147,8 @@ static int efivarfs_callback(efi_char16_t *name16, efi_guid_t vendor,
+
+ name[len + EFI_VARIABLE_GUID_LEN+1] = '\0';
+
+- inode = efivarfs_get_inode(sb, d_inode(root), S_IFREG | 0644, 0);
++ inode = efivarfs_get_inode(sb, d_inode(root), S_IFREG | 0644, 0,
++ is_removable);
+ if (!inode)
+ goto fail_name;
+
+@@ -200,7 +204,7 @@ static int efivarfs_fill_super(struct super_block *sb, void *data, int silent)
+ sb->s_d_op = &efivarfs_d_ops;
+ sb->s_time_gran = 1;
+
+- inode = efivarfs_get_inode(sb, NULL, S_IFDIR | 0755, 0);
++ inode = efivarfs_get_inode(sb, NULL, S_IFDIR | 0755, 0, true);
+ if (!inode)
+ return -ENOMEM;
+ inode->i_op = &efivarfs_dir_inode_operations;
+diff --git a/fs/ext2/file.c b/fs/ext2/file.c
+index 3a0a6c6406d0..3b57c9f83c9b 100644
+--- a/fs/ext2/file.c
++++ b/fs/ext2/file.c
+@@ -28,12 +28,12 @@
+ #ifdef CONFIG_FS_DAX
+ static int ext2_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+ {
+- return dax_fault(vma, vmf, ext2_get_block);
++ return dax_fault(vma, vmf, ext2_get_block, NULL);
+ }
+
+ static int ext2_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
+ {
+- return dax_mkwrite(vma, vmf, ext2_get_block);
++ return dax_mkwrite(vma, vmf, ext2_get_block, NULL);
+ }
+
+ static const struct vm_operations_struct ext2_dax_vm_ops = {
+diff --git a/fs/ext4/file.c b/fs/ext4/file.c
+index dd65fac5ff2f..0d062ffacb24 100644
+--- a/fs/ext4/file.c
++++ b/fs/ext4/file.c
+@@ -192,15 +192,27 @@ out:
+ }
+
+ #ifdef CONFIG_FS_DAX
++static void ext4_end_io_unwritten(struct buffer_head *bh, int uptodate)
++{
++ struct inode *inode = bh->b_assoc_map->host;
++ /* XXX: breaks on 32-bit > 16GB. Is that even supported? */
++ loff_t offset = (loff_t)(uintptr_t)bh->b_private << inode->i_blkbits;
++ int err;
++ if (!uptodate)
++ return;
++ WARN_ON(!buffer_unwritten(bh));
++ err = ext4_convert_unwritten_extents(NULL, inode, offset, bh->b_size);
++}
++
+ static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+ {
+- return dax_fault(vma, vmf, ext4_get_block);
++ return dax_fault(vma, vmf, ext4_get_block, ext4_end_io_unwritten);
+ /* Is this the right get_block? */
+ }
+
+ static int ext4_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
+ {
+- return dax_mkwrite(vma, vmf, ext4_get_block);
++ return dax_mkwrite(vma, vmf, ext4_get_block, ext4_end_io_unwritten);
+ }
+
+ static const struct vm_operations_struct ext4_dax_vm_ops = {
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index 3291e1af0e24..f43996884242 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -656,16 +656,32 @@ has_zeroout:
+ return retval;
+ }
+
+-static void ext4_end_io_unwritten(struct buffer_head *bh, int uptodate)
++/*
++ * Update EXT4_MAP_FLAGS in bh->b_state. For buffer heads attached to pages
++ * we have to be careful as someone else may be manipulating b_state as well.
++ */
++static void ext4_update_bh_state(struct buffer_head *bh, unsigned long flags)
+ {
+- struct inode *inode = bh->b_assoc_map->host;
+- /* XXX: breaks on 32-bit > 16GB. Is that even supported? */
+- loff_t offset = (loff_t)(uintptr_t)bh->b_private << inode->i_blkbits;
+- int err;
+- if (!uptodate)
++ unsigned long old_state;
++ unsigned long new_state;
++
++ flags &= EXT4_MAP_FLAGS;
++
++ /* Dummy buffer_head? Set non-atomically. */
++ if (!bh->b_page) {
++ bh->b_state = (bh->b_state & ~EXT4_MAP_FLAGS) | flags;
+ return;
+- WARN_ON(!buffer_unwritten(bh));
+- err = ext4_convert_unwritten_extents(NULL, inode, offset, bh->b_size);
++ }
++ /*
++ * Someone else may be modifying b_state. Be careful! This is ugly but
++ * once we get rid of using bh as a container for mapping information
++ * to pass to / from get_block functions, this can go away.
++ */
++ do {
++ old_state = READ_ONCE(bh->b_state);
++ new_state = (old_state & ~EXT4_MAP_FLAGS) | flags;
++ } while (unlikely(
++ cmpxchg(&bh->b_state, old_state, new_state) != old_state));
+ }
+
+ /* Maximum number of blocks we map for direct IO at once. */
+@@ -704,11 +720,16 @@ static int _ext4_get_block(struct inode *inode, sector_t iblock,
+ ext4_io_end_t *io_end = ext4_inode_aio(inode);
+
+ map_bh(bh, inode->i_sb, map.m_pblk);
+- bh->b_state = (bh->b_state & ~EXT4_MAP_FLAGS) | map.m_flags;
+- if (IS_DAX(inode) && buffer_unwritten(bh) && !io_end) {
++ ext4_update_bh_state(bh, map.m_flags);
++ if (IS_DAX(inode) && buffer_unwritten(bh)) {
++ /*
++ * dgc: I suspect unwritten conversion on ext4+DAX is
++ * fundamentally broken here when there are concurrent
++ * read/write in progress on this inode.
++ */
++ WARN_ON_ONCE(io_end);
+ bh->b_assoc_map = inode->i_mapping;
+ bh->b_private = (void *)(unsigned long)iblock;
+- bh->b_end_io = ext4_end_io_unwritten;
+ }
+ if (io_end && io_end->flag & EXT4_IO_END_UNWRITTEN)
+ set_buffer_defer_completion(bh);
+@@ -1655,7 +1676,7 @@ int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
+ return ret;
+
+ map_bh(bh, inode->i_sb, map.m_pblk);
+- bh->b_state = (bh->b_state & ~EXT4_MAP_FLAGS) | map.m_flags;
++ ext4_update_bh_state(bh, map.m_flags);
+
+ if (buffer_unwritten(bh)) {
+ /* A delayed write to unwritten bh should be marked
+diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
+index 7da8ac1047f8..3fb92abe5707 100644
+--- a/fs/ext4/move_extent.c
++++ b/fs/ext4/move_extent.c
+@@ -393,6 +393,7 @@ data_copy:
+ *err = ext4_get_block(orig_inode, orig_blk_offset + i, bh, 0);
+ if (*err < 0)
+ break;
++ bh = bh->b_this_page;
+ }
+ if (!*err)
+ *err = block_commit_write(pagep[0], from, from + replaced_size);
+diff --git a/fs/fhandle.c b/fs/fhandle.c
+index d59712dfa3e7..ca3c3dd01789 100644
+--- a/fs/fhandle.c
++++ b/fs/fhandle.c
+@@ -228,7 +228,7 @@ long do_handle_open(int mountdirfd,
+ path_put(&path);
+ return fd;
+ }
+- file = file_open_root(path.dentry, path.mnt, "", open_flag);
++ file = file_open_root(path.dentry, path.mnt, "", open_flag, 0);
+ if (IS_ERR(file)) {
+ put_unused_fd(fd);
+ retval = PTR_ERR(file);
+diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
+index e5bbf748b698..709a0d917b44 100644
+--- a/fs/fuse/cuse.c
++++ b/fs/fuse/cuse.c
+@@ -90,7 +90,7 @@ static struct list_head *cuse_conntbl_head(dev_t devt)
+
+ static ssize_t cuse_read_iter(struct kiocb *kiocb, struct iov_iter *to)
+ {
+- struct fuse_io_priv io = { .async = 0, .file = kiocb->ki_filp };
++ struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(kiocb->ki_filp);
+ loff_t pos = 0;
+
+ return fuse_direct_io(&io, to, &pos, FUSE_DIO_CUSE);
+@@ -98,7 +98,7 @@ static ssize_t cuse_read_iter(struct kiocb *kiocb, struct iov_iter *to)
+
+ static ssize_t cuse_write_iter(struct kiocb *kiocb, struct iov_iter *from)
+ {
+- struct fuse_io_priv io = { .async = 0, .file = kiocb->ki_filp };
++ struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(kiocb->ki_filp);
+ loff_t pos = 0;
+ /*
+ * No locking or generic_write_checks(), the server is
+diff --git a/fs/fuse/file.c b/fs/fuse/file.c
+index 5ef05b5c4cff..3227091c2a64 100644
+--- a/fs/fuse/file.c
++++ b/fs/fuse/file.c
+@@ -528,6 +528,11 @@ static void fuse_release_user_pages(struct fuse_req *req, int write)
+ }
+ }
+
++static void fuse_io_release(struct kref *kref)
++{
++ kfree(container_of(kref, struct fuse_io_priv, refcnt));
++}
++
+ static ssize_t fuse_get_res_by_io(struct fuse_io_priv *io)
+ {
+ if (io->err)
+@@ -585,8 +590,9 @@ static void fuse_aio_complete(struct fuse_io_priv *io, int err, ssize_t pos)
+ }
+
+ io->iocb->ki_complete(io->iocb, res, 0);
+- kfree(io);
+ }
++
++ kref_put(&io->refcnt, fuse_io_release);
+ }
+
+ static void fuse_aio_complete_req(struct fuse_conn *fc, struct fuse_req *req)
+@@ -613,6 +619,7 @@ static size_t fuse_async_req_send(struct fuse_conn *fc, struct fuse_req *req,
+ size_t num_bytes, struct fuse_io_priv *io)
+ {
+ spin_lock(&io->lock);
++ kref_get(&io->refcnt);
+ io->size += num_bytes;
+ io->reqs++;
+ spin_unlock(&io->lock);
+@@ -691,7 +698,7 @@ static void fuse_short_read(struct fuse_req *req, struct inode *inode,
+
+ static int fuse_do_readpage(struct file *file, struct page *page)
+ {
+- struct fuse_io_priv io = { .async = 0, .file = file };
++ struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(file);
+ struct inode *inode = page->mapping->host;
+ struct fuse_conn *fc = get_fuse_conn(inode);
+ struct fuse_req *req;
+@@ -984,7 +991,7 @@ static size_t fuse_send_write_pages(struct fuse_req *req, struct file *file,
+ size_t res;
+ unsigned offset;
+ unsigned i;
+- struct fuse_io_priv io = { .async = 0, .file = file };
++ struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(file);
+
+ for (i = 0; i < req->num_pages; i++)
+ fuse_wait_on_page_writeback(inode, req->pages[i]->index);
+@@ -1049,6 +1056,7 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
+ tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes);
+ flush_dcache_page(page);
+
++ iov_iter_advance(ii, tmp);
+ if (!tmp) {
+ unlock_page(page);
+ page_cache_release(page);
+@@ -1061,7 +1069,6 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
+ req->page_descs[req->num_pages].length = tmp;
+ req->num_pages++;
+
+- iov_iter_advance(ii, tmp);
+ count += tmp;
+ pos += tmp;
+ offset += tmp;
+@@ -1398,7 +1405,7 @@ static ssize_t __fuse_direct_read(struct fuse_io_priv *io,
+
+ static ssize_t fuse_direct_read_iter(struct kiocb *iocb, struct iov_iter *to)
+ {
+- struct fuse_io_priv io = { .async = 0, .file = iocb->ki_filp };
++ struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(iocb->ki_filp);
+ return __fuse_direct_read(&io, to, &iocb->ki_pos);
+ }
+
+@@ -1406,7 +1413,7 @@ static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from)
+ {
+ struct file *file = iocb->ki_filp;
+ struct inode *inode = file_inode(file);
+- struct fuse_io_priv io = { .async = 0, .file = file };
++ struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(file);
+ ssize_t res;
+
+ if (is_bad_inode(inode))
+@@ -2786,6 +2793,7 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
+ loff_t i_size;
+ size_t count = iov_iter_count(iter);
+ struct fuse_io_priv *io;
++ bool is_sync = is_sync_kiocb(iocb);
+
+ pos = offset;
+ inode = file->f_mapping->host;
+@@ -2806,6 +2814,7 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
+ if (!io)
+ return -ENOMEM;
+ spin_lock_init(&io->lock);
++ kref_init(&io->refcnt);
+ io->reqs = 1;
+ io->bytes = -1;
+ io->size = 0;
+@@ -2825,12 +2834,18 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
+ * to wait on real async I/O requests, so we must submit this request
+ * synchronously.
+ */
+- if (!is_sync_kiocb(iocb) && (offset + count > i_size) &&
++ if (!is_sync && (offset + count > i_size) &&
+ iov_iter_rw(iter) == WRITE)
+ io->async = false;
+
+- if (io->async && is_sync_kiocb(iocb))
++ if (io->async && is_sync) {
++ /*
++ * Additional reference to keep io around after
++ * calling fuse_aio_complete()
++ */
++ kref_get(&io->refcnt);
+ io->done = &wait;
++ }
+
+ if (iov_iter_rw(iter) == WRITE) {
+ ret = fuse_direct_io(io, iter, &pos, FUSE_DIO_WRITE);
+@@ -2843,14 +2858,14 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
+ fuse_aio_complete(io, ret < 0 ? ret : 0, -1);
+
+ /* we have a non-extending, async request, so return */
+- if (!is_sync_kiocb(iocb))
++ if (!is_sync)
+ return -EIOCBQUEUED;
+
+ wait_for_completion(&wait);
+ ret = fuse_get_res_by_io(io);
+ }
+
+- kfree(io);
++ kref_put(&io->refcnt, fuse_io_release);
+
+ if (iov_iter_rw(iter) == WRITE) {
+ if (ret > 0)
+diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
+index 7354dc142a50..85f9d8273455 100644
+--- a/fs/fuse/fuse_i.h
++++ b/fs/fuse/fuse_i.h
+@@ -22,6 +22,7 @@
+ #include <linux/rbtree.h>
+ #include <linux/poll.h>
+ #include <linux/workqueue.h>
++#include <linux/kref.h>
+
+ /** Max number of pages that can be used in a single read request */
+ #define FUSE_MAX_PAGES_PER_REQ 32
+@@ -253,6 +254,7 @@ enum fuse_req_state {
+
+ /** The request IO state (for asynchronous processing) */
+ struct fuse_io_priv {
++ struct kref refcnt;
+ int async;
+ spinlock_t lock;
+ unsigned reqs;
+@@ -266,6 +268,13 @@ struct fuse_io_priv {
+ struct completion *done;
+ };
+
++#define FUSE_IO_PRIV_SYNC(f) \
++{ \
++ .refcnt = { ATOMIC_INIT(1) }, \
++ .async = 0, \
++ .file = f, \
++}
++
+ /**
+ * A request to the client
+ */
+diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
+index 0469f32918a5..e4d224315a1f 100644
+--- a/fs/jbd2/journal.c
++++ b/fs/jbd2/journal.c
+@@ -1423,11 +1423,12 @@ out:
+ /**
+ * jbd2_mark_journal_empty() - Mark on disk journal as empty.
+ * @journal: The journal to update.
++ * @write_op: With which operation should we write the journal sb
+ *
+ * Update a journal's dynamic superblock fields to show that journal is empty.
+ * Write updated superblock to disk waiting for IO to complete.
+ */
+-static void jbd2_mark_journal_empty(journal_t *journal)
++static void jbd2_mark_journal_empty(journal_t *journal, int write_op)
+ {
+ journal_superblock_t *sb = journal->j_superblock;
+
+@@ -1445,7 +1446,7 @@ static void jbd2_mark_journal_empty(journal_t *journal)
+ sb->s_start = cpu_to_be32(0);
+ read_unlock(&journal->j_state_lock);
+
+- jbd2_write_superblock(journal, WRITE_FUA);
++ jbd2_write_superblock(journal, write_op);
+
+ /* Log is no longer empty */
+ write_lock(&journal->j_state_lock);
+@@ -1730,7 +1731,13 @@ int jbd2_journal_destroy(journal_t *journal)
+ if (journal->j_sb_buffer) {
+ if (!is_journal_aborted(journal)) {
+ mutex_lock(&journal->j_checkpoint_mutex);
+- jbd2_mark_journal_empty(journal);
++
++ write_lock(&journal->j_state_lock);
++ journal->j_tail_sequence =
++ ++journal->j_transaction_sequence;
++ write_unlock(&journal->j_state_lock);
++
++ jbd2_mark_journal_empty(journal, WRITE_FLUSH_FUA);
+ mutex_unlock(&journal->j_checkpoint_mutex);
+ } else
+ err = -EIO;
+@@ -1989,7 +1996,7 @@ int jbd2_journal_flush(journal_t *journal)
+ * the magic code for a fully-recovered superblock. Any future
+ * commits of data to the journal will restore the current
+ * s_start value. */
+- jbd2_mark_journal_empty(journal);
++ jbd2_mark_journal_empty(journal, WRITE_FUA);
+ mutex_unlock(&journal->j_checkpoint_mutex);
+ write_lock(&journal->j_state_lock);
+ J_ASSERT(!journal->j_running_transaction);
+@@ -2035,7 +2042,7 @@ int jbd2_journal_wipe(journal_t *journal, int write)
+ if (write) {
+ /* Lock to make assertions happy... */
+ mutex_lock(&journal->j_checkpoint_mutex);
+- jbd2_mark_journal_empty(journal);
++ jbd2_mark_journal_empty(journal, WRITE_FUA);
+ mutex_unlock(&journal->j_checkpoint_mutex);
+ }
+
+diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
+index 864e2003e8de..2b50bc0c545e 100644
+--- a/fs/nfsd/nfs4proc.c
++++ b/fs/nfsd/nfs4proc.c
+@@ -881,6 +881,7 @@ nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ &exp, &dentry);
+ if (err)
+ return err;
++ fh_unlock(&cstate->current_fh);
+ if (d_really_is_negative(dentry)) {
+ exp_put(exp);
+ err = nfserr_noent;
+diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
+index 3dd1b616b92b..d8297542f8b3 100644
+--- a/fs/nfsd/nfs4xdr.c
++++ b/fs/nfsd/nfs4xdr.c
+@@ -1071,8 +1071,9 @@ nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename
+
+ READ_BUF(4);
+ rename->rn_snamelen = be32_to_cpup(p++);
+- READ_BUF(rename->rn_snamelen + 4);
++ READ_BUF(rename->rn_snamelen);
+ SAVEMEM(rename->rn_sname, rename->rn_snamelen);
++ READ_BUF(4);
+ rename->rn_tnamelen = be32_to_cpup(p++);
+ READ_BUF(rename->rn_tnamelen);
+ SAVEMEM(rename->rn_tname, rename->rn_tnamelen);
+@@ -1154,13 +1155,14 @@ nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclient
+ READ_BUF(8);
+ setclientid->se_callback_prog = be32_to_cpup(p++);
+ setclientid->se_callback_netid_len = be32_to_cpup(p++);
+-
+- READ_BUF(setclientid->se_callback_netid_len + 4);
++ READ_BUF(setclientid->se_callback_netid_len);
+ SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len);
++ READ_BUF(4);
+ setclientid->se_callback_addr_len = be32_to_cpup(p++);
+
+- READ_BUF(setclientid->se_callback_addr_len + 4);
++ READ_BUF(setclientid->se_callback_addr_len);
+ SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len);
++ READ_BUF(4);
+ setclientid->se_callback_ident = be32_to_cpup(p++);
+
+ DECODE_TAIL;
+@@ -1814,8 +1816,9 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
+
+ READ_BUF(4);
+ argp->taglen = be32_to_cpup(p++);
+- READ_BUF(argp->taglen + 8);
++ READ_BUF(argp->taglen);
+ SAVEMEM(argp->tag, argp->taglen);
++ READ_BUF(8);
+ argp->minorversion = be32_to_cpup(p++);
+ argp->opcnt = be32_to_cpup(p++);
+ max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2);
+diff --git a/fs/ocfs2/dlm/dlmconvert.c b/fs/ocfs2/dlm/dlmconvert.c
+index e36d63ff1783..f90931335c6b 100644
+--- a/fs/ocfs2/dlm/dlmconvert.c
++++ b/fs/ocfs2/dlm/dlmconvert.c
+@@ -262,6 +262,7 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm,
+ struct dlm_lock *lock, int flags, int type)
+ {
+ enum dlm_status status;
++ u8 old_owner = res->owner;
+
+ mlog(0, "type=%d, convert_type=%d, busy=%d\n", lock->ml.type,
+ lock->ml.convert_type, res->state & DLM_LOCK_RES_IN_PROGRESS);
+@@ -287,6 +288,19 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm,
+ status = DLM_DENIED;
+ goto bail;
+ }
++
++ if (lock->ml.type == type && lock->ml.convert_type == LKM_IVMODE) {
++ mlog(0, "last convert request returned DLM_RECOVERING, but "
++ "owner has already queued and sent ast to me. res %.*s, "
++ "(cookie=%u:%llu, type=%d, conv=%d)\n",
++ res->lockname.len, res->lockname.name,
++ dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
++ dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
++ lock->ml.type, lock->ml.convert_type);
++ status = DLM_NORMAL;
++ goto bail;
++ }
++
+ res->state |= DLM_LOCK_RES_IN_PROGRESS;
+ /* move lock to local convert queue */
+ /* do not alter lock refcount. switching lists. */
+@@ -316,11 +330,19 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm,
+ spin_lock(&res->spinlock);
+ res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
+ lock->convert_pending = 0;
+- /* if it failed, move it back to granted queue */
++ /* if it failed, move it back to granted queue.
++ * if master returns DLM_NORMAL and then down before sending ast,
++ * it may have already been moved to granted queue, reset to
++ * DLM_RECOVERING and retry convert */
+ if (status != DLM_NORMAL) {
+ if (status != DLM_NOTQUEUED)
+ dlm_error(status);
+ dlm_revert_pending_convert(res, lock);
++ } else if ((res->state & DLM_LOCK_RES_RECOVERING) ||
++ (old_owner != res->owner)) {
++ mlog(0, "res %.*s is in recovering or has been recovered.\n",
++ res->lockname.len, res->lockname.name);
++ status = DLM_RECOVERING;
+ }
+ bail:
+ spin_unlock(&res->spinlock);
+diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
+index f25ff5d3a2f9..dad6d841f0da 100644
+--- a/fs/ocfs2/dlm/dlmrecovery.c
++++ b/fs/ocfs2/dlm/dlmrecovery.c
+@@ -2064,7 +2064,6 @@ void dlm_move_lockres_to_recovery_list(struct dlm_ctxt *dlm,
+ dlm_lock_get(lock);
+ if (lock->convert_pending) {
+ /* move converting lock back to granted */
+- BUG_ON(i != DLM_CONVERTING_LIST);
+ mlog(0, "node died with convert pending "
+ "on %.*s. move back to granted list.\n",
+ res->lockname.len, res->lockname.name);
+diff --git a/fs/open.c b/fs/open.c
+index f9d2bf935099..ff80b2542989 100644
+--- a/fs/open.c
++++ b/fs/open.c
+@@ -987,14 +987,12 @@ struct file *filp_open(const char *filename, int flags, umode_t mode)
+ EXPORT_SYMBOL(filp_open);
+
+ struct file *file_open_root(struct dentry *dentry, struct vfsmount *mnt,
+- const char *filename, int flags)
++ const char *filename, int flags, umode_t mode)
+ {
+ struct open_flags op;
+- int err = build_open_flags(flags, 0, &op);
++ int err = build_open_flags(flags, mode, &op);
+ if (err)
+ return ERR_PTR(err);
+- if (flags & O_CREAT)
+- return ERR_PTR(-EINVAL);
+ return do_file_open_root(dentry, mnt, filename, &op);
+ }
+ EXPORT_SYMBOL(file_open_root);
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index e505b44a9184..edd2a4a5fd3c 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -62,15 +62,15 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr)
+ if (err)
+ goto out;
+
+- upperdentry = ovl_dentry_upper(dentry);
+- if (upperdentry) {
++ err = ovl_copy_up(dentry);
++ if (!err) {
++ upperdentry = ovl_dentry_upper(dentry);
++
+ mutex_lock(&upperdentry->d_inode->i_mutex);
+ err = notify_change(upperdentry, attr, NULL);
+ if (!err)
+ ovl_copyattr(upperdentry->d_inode, dentry->d_inode);
+ mutex_unlock(&upperdentry->d_inode->i_mutex);
+- } else {
+- err = ovl_copy_up_last(dentry, attr, false);
+ }
+ ovl_drop_write(dentry);
+ out:
+diff --git a/fs/proc/array.c b/fs/proc/array.c
+index 70f9c4cba31f..dca04edb6b90 100644
+--- a/fs/proc/array.c
++++ b/fs/proc/array.c
+@@ -384,7 +384,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
+
+ state = *get_task_state(task);
+ vsize = eip = esp = 0;
+- permitted = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT);
++ permitted = ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS | PTRACE_MODE_NOAUDIT);
+ mm = get_task_mm(task);
+ if (mm) {
+ vsize = task_vsize(mm);
+diff --git a/fs/proc/base.c b/fs/proc/base.c
+index fcdeb1eb3921..68d51ed1666f 100644
+--- a/fs/proc/base.c
++++ b/fs/proc/base.c
+@@ -211,7 +211,7 @@ static int proc_pid_cmdline(struct seq_file *m, struct pid_namespace *ns,
+ static int proc_pid_auxv(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
+ {
+- struct mm_struct *mm = mm_access(task, PTRACE_MODE_READ);
++ struct mm_struct *mm = mm_access(task, PTRACE_MODE_READ_FSCREDS);
+ if (mm && !IS_ERR(mm)) {
+ unsigned int nwords = 0;
+ do {
+@@ -238,7 +238,8 @@ static int proc_pid_wchan(struct seq_file *m, struct pid_namespace *ns,
+
+ wchan = get_wchan(task);
+
+- if (wchan && ptrace_may_access(task, PTRACE_MODE_READ) && !lookup_symbol_name(wchan, symname))
++ if (wchan && ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)
++ && !lookup_symbol_name(wchan, symname))
+ seq_printf(m, "%s", symname);
+ else
+ seq_putc(m, '0');
+@@ -252,7 +253,7 @@ static int lock_trace(struct task_struct *task)
+ int err = mutex_lock_killable(&task->signal->cred_guard_mutex);
+ if (err)
+ return err;
+- if (!ptrace_may_access(task, PTRACE_MODE_ATTACH)) {
++ if (!ptrace_may_access(task, PTRACE_MODE_ATTACH_FSCREDS)) {
+ mutex_unlock(&task->signal->cred_guard_mutex);
+ return -EPERM;
+ }
+@@ -502,7 +503,7 @@ static int proc_fd_access_allowed(struct inode *inode)
+ */
+ task = get_proc_task(inode);
+ if (task) {
+- allowed = ptrace_may_access(task, PTRACE_MODE_READ);
++ allowed = ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS);
+ put_task_struct(task);
+ }
+ return allowed;
+@@ -537,7 +538,7 @@ static bool has_pid_permissions(struct pid_namespace *pid,
+ return true;
+ if (in_group_p(pid->pid_gid))
+ return true;
+- return ptrace_may_access(task, PTRACE_MODE_READ);
++ return ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS);
+ }
+
+
+@@ -614,7 +615,7 @@ struct mm_struct *proc_mem_open(struct inode *inode, unsigned int mode)
+ struct mm_struct *mm = ERR_PTR(-ESRCH);
+
+ if (task) {
+- mm = mm_access(task, mode);
++ mm = mm_access(task, mode | PTRACE_MODE_FSCREDS);
+ put_task_struct(task);
+
+ if (!IS_ERR_OR_NULL(mm)) {
+@@ -1676,7 +1677,7 @@ static int map_files_d_revalidate(struct dentry *dentry, unsigned int flags)
+ if (!task)
+ goto out_notask;
+
+- mm = mm_access(task, PTRACE_MODE_READ);
++ mm = mm_access(task, PTRACE_MODE_READ_FSCREDS);
+ if (IS_ERR_OR_NULL(mm))
+ goto out;
+
+@@ -1808,7 +1809,7 @@ static struct dentry *proc_map_files_lookup(struct inode *dir,
+ goto out;
+
+ result = -EACCES;
+- if (!ptrace_may_access(task, PTRACE_MODE_READ))
++ if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS))
+ goto out_put_task;
+
+ result = -ENOENT;
+@@ -1865,7 +1866,7 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx)
+ goto out;
+
+ ret = -EACCES;
+- if (!ptrace_may_access(task, PTRACE_MODE_READ))
++ if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS))
+ goto out_put_task;
+
+ ret = 0;
+@@ -2345,7 +2346,7 @@ static int do_io_accounting(struct task_struct *task, struct seq_file *m, int wh
+ if (result)
+ return result;
+
+- if (!ptrace_may_access(task, PTRACE_MODE_READ)) {
++ if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) {
+ result = -EACCES;
+ goto out_unlock;
+ }
+diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
+index e512642dbbdc..1c70dec8809d 100644
+--- a/fs/proc/namespaces.c
++++ b/fs/proc/namespaces.c
+@@ -42,7 +42,7 @@ static void *proc_ns_follow_link(struct dentry *dentry, struct nameidata *nd)
+ if (!task)
+ return error;
+
+- if (ptrace_may_access(task, PTRACE_MODE_READ)) {
++ if (ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) {
+ error = ns_get_path(&ns_path, task, ns_ops);
+ if (!error)
+ nd_jump_link(nd, &ns_path);
+@@ -63,7 +63,7 @@ static int proc_ns_readlink(struct dentry *dentry, char __user *buffer, int bufl
+ if (!task)
+ return res;
+
+- if (ptrace_may_access(task, PTRACE_MODE_READ)) {
++ if (ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) {
+ res = ns_get_name(name, sizeof(name), task, ns_ops);
+ if (res >= 0)
+ res = readlink_copy(buffer, buflen, name);
+diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c
+index 8db932da4009..a5644c41a182 100644
+--- a/fs/proc_namespace.c
++++ b/fs/proc_namespace.c
+@@ -196,6 +196,8 @@ static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt)
+ if (sb->s_op->show_devname) {
+ seq_puts(m, "device ");
+ err = sb->s_op->show_devname(m, mnt_path.dentry);
++ if (err)
++ goto out;
+ } else {
+ if (r->mnt_devname) {
+ seq_puts(m, "device ");
+diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
+index 20d1f74561cf..19c777ad0084 100644
+--- a/fs/quota/dquot.c
++++ b/fs/quota/dquot.c
+@@ -1393,7 +1393,7 @@ static int dquot_active(const struct inode *inode)
+ static void __dquot_initialize(struct inode *inode, int type)
+ {
+ int cnt, init_needed = 0;
+- struct dquot **dquots, *got[MAXQUOTAS];
++ struct dquot **dquots, *got[MAXQUOTAS] = {};
+ struct super_block *sb = inode->i_sb;
+ qsize_t rsv;
+
+@@ -1408,7 +1408,6 @@ static void __dquot_initialize(struct inode *inode, int type)
+ kprojid_t projid;
+ int rc;
+
+- got[cnt] = NULL;
+ if (type != -1 && cnt != type)
+ continue;
+ /*
+diff --git a/fs/splice.c b/fs/splice.c
+index bfe62ae40f40..e7522c486068 100644
+--- a/fs/splice.c
++++ b/fs/splice.c
+@@ -185,6 +185,9 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
+ unsigned int spd_pages = spd->nr_pages;
+ int ret, do_wakeup, page_nr;
+
++ if (!spd_pages)
++ return 0;
++
+ ret = 0;
+ do_wakeup = 0;
+ page_nr = 0;
+diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c
+index 65fb37a18e92..8f7e09d0d0f0 100644
+--- a/fs/xfs/xfs_attr_list.c
++++ b/fs/xfs/xfs_attr_list.c
+@@ -202,8 +202,10 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context)
+ sbp->namelen,
+ sbp->valuelen,
+ &sbp->name[sbp->namelen]);
+- if (error)
++ if (error) {
++ kmem_free(sbuf);
+ return error;
++ }
+ if (context->seen_enough)
+ break;
+ cursor->offset++;
+@@ -454,14 +456,13 @@ xfs_attr3_leaf_list_int(
+ args.rmtblkcnt = xfs_attr3_rmt_blocks(
+ args.dp->i_mount, valuelen);
+ retval = xfs_attr_rmtval_get(&args);
+- if (retval)
+- return retval;
+- retval = context->put_listent(context,
+- entry->flags,
+- name_rmt->name,
+- (int)name_rmt->namelen,
+- valuelen,
+- args.value);
++ if (!retval)
++ retval = context->put_listent(context,
++ entry->flags,
++ name_rmt->name,
++ (int)name_rmt->namelen,
++ valuelen,
++ args.value);
+ kmem_free(args.value);
+ } else {
+ retval = context->put_listent(context,
+diff --git a/include/asm-generic/bitops/lock.h b/include/asm-generic/bitops/lock.h
+index c30266e94806..8ef0ccbf8167 100644
+--- a/include/asm-generic/bitops/lock.h
++++ b/include/asm-generic/bitops/lock.h
+@@ -29,16 +29,16 @@ do { \
+ * @nr: the bit to set
+ * @addr: the address to start counting from
+ *
+- * This operation is like clear_bit_unlock, however it is not atomic.
+- * It does provide release barrier semantics so it can be used to unlock
+- * a bit lock, however it would only be used if no other CPU can modify
+- * any bits in the memory until the lock is released (a good example is
+- * if the bit lock itself protects access to the other bits in the word).
++ * A weaker form of clear_bit_unlock() as used by __bit_lock_unlock(). If all
++ * the bits in the word are protected by this lock some archs can use weaker
++ * ops to safely unlock.
++ *
++ * See for example x86's implementation.
+ */
+ #define __clear_bit_unlock(nr, addr) \
+ do { \
+- smp_mb(); \
+- __clear_bit(nr, addr); \
++ smp_mb__before_atomic(); \
++ clear_bit(nr, addr); \
+ } while (0)
+
+ #endif /* _ASM_GENERIC_BITOPS_LOCK_H_ */
+diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
+index c7f01d1aa562..653acf4cc44a 100644
+--- a/include/drm/drm_dp_mst_helper.h
++++ b/include/drm/drm_dp_mst_helper.h
+@@ -44,8 +44,6 @@ struct drm_dp_vcpi {
+ /**
+ * struct drm_dp_mst_port - MST port
+ * @kref: reference count for this port.
+- * @guid_valid: for DP 1.2 devices if we have validated the GUID.
+- * @guid: guid for DP 1.2 device on this port.
+ * @port_num: port number
+ * @input: if this port is an input port.
+ * @mcs: message capability status - DP 1.2 spec.
+@@ -70,10 +68,6 @@ struct drm_dp_vcpi {
+ struct drm_dp_mst_port {
+ struct kref kref;
+
+- /* if dpcd 1.2 device is on this port - its GUID info */
+- bool guid_valid;
+- u8 guid[16];
+-
+ u8 port_num;
+ bool input;
+ bool mcs;
+@@ -109,10 +103,12 @@ struct drm_dp_mst_port {
+ * @tx_slots: transmission slots for this device.
+ * @last_seqno: last sequence number used to talk to this.
+ * @link_address_sent: if a link address message has been sent to this device yet.
++ * @guid: guid for DP 1.2 branch device. port under this branch can be
++ * identified by port #.
+ *
+ * This structure represents an MST branch device, there is one
+- * primary branch device at the root, along with any others connected
+- * to downstream ports
++ * primary branch device at the root, along with any other branches connected
++ * to downstream port of parent branches.
+ */
+ struct drm_dp_mst_branch {
+ struct kref kref;
+@@ -131,6 +127,9 @@ struct drm_dp_mst_branch {
+ struct drm_dp_sideband_msg_tx *tx_slots[2];
+ int last_seqno;
+ bool link_address_sent;
++
++ /* global unique identifier to identify branch devices */
++ u8 guid[16];
+ };
+
+
+@@ -404,11 +403,9 @@ struct drm_dp_payload {
+ * @conn_base_id: DRM connector ID this mgr is connected to.
+ * @down_rep_recv: msg receiver state for down replies.
+ * @up_req_recv: msg receiver state for up requests.
+- * @lock: protects mst state, primary, guid, dpcd.
++ * @lock: protects mst state, primary, dpcd.
+ * @mst_state: if this manager is enabled for an MST capable port.
+ * @mst_primary: pointer to the primary branch device.
+- * @guid_valid: GUID valid for the primary branch device.
+- * @guid: GUID for primary port.
+ * @dpcd: cache of DPCD for primary port.
+ * @pbn_div: PBN to slots divisor.
+ *
+@@ -430,13 +427,11 @@ struct drm_dp_mst_topology_mgr {
+ struct drm_dp_sideband_msg_rx up_req_recv;
+
+ /* pointer to info about the initial MST device */
+- struct mutex lock; /* protects mst_state + primary + guid + dpcd */
++ struct mutex lock; /* protects mst_state + primary + dpcd */
+
+ bool mst_state;
+ struct drm_dp_mst_branch *mst_primary;
+- /* primary MST device GUID */
+- bool guid_valid;
+- u8 guid[16];
++
+ u8 dpcd[DP_RECEIVER_CAP_SIZE];
+ u8 sink_count;
+ int pbn_div;
+diff --git a/include/linux/atmel-mci.h b/include/linux/atmel-mci.h
+index 9177947bf032..e753062b9355 100644
+--- a/include/linux/atmel-mci.h
++++ b/include/linux/atmel-mci.h
+@@ -2,6 +2,7 @@
+ #define __LINUX_ATMEL_MCI_H
+
+ #include <linux/types.h>
++#include <linux/dmaengine.h>
+
+ #define ATMCI_MAX_NR_SLOTS 2
+
+@@ -37,6 +38,7 @@ struct mci_slot_pdata {
+ */
+ struct mci_platform_data {
+ struct mci_dma_data *dma_slave;
++ dma_filter_fn dma_filter;
+ struct mci_slot_pdata slot[ATMCI_MAX_NR_SLOTS];
+ };
+
+diff --git a/include/linux/efi.h b/include/linux/efi.h
+index af5be0368dec..7f764000dab9 100644
+--- a/include/linux/efi.h
++++ b/include/linux/efi.h
+@@ -1162,7 +1162,10 @@ int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
+ struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
+ struct list_head *head, bool remove);
+
+-bool efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len);
++bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
++ unsigned long data_size);
++bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
++ size_t len);
+
+ extern struct work_struct efivar_work;
+ void efivar_run_worker(void);
+diff --git a/include/linux/fs.h b/include/linux/fs.h
+index fdc369fa69e8..ae327f6a53f6 100644
+--- a/include/linux/fs.h
++++ b/include/linux/fs.h
+@@ -70,6 +70,7 @@ typedef int (get_block_t)(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create);
+ typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
+ ssize_t bytes, void *private);
++typedef void (dax_iodone_t)(struct buffer_head *bh_map, int uptodate);
+
+ #define MAY_EXEC 0x00000001
+ #define MAY_WRITE 0x00000002
+@@ -2201,7 +2202,7 @@ extern long do_sys_open(int dfd, const char __user *filename, int flags,
+ extern struct file *file_open_name(struct filename *, int, umode_t);
+ extern struct file *filp_open(const char *, int, umode_t);
+ extern struct file *file_open_root(struct dentry *, struct vfsmount *,
+- const char *, int);
++ const char *, int, umode_t);
+ extern struct file * dentry_open(const struct path *, int, const struct cred *);
+ extern int filp_close(struct file *, fl_owner_t id);
+
+@@ -2635,9 +2636,10 @@ ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t,
+ int dax_clear_blocks(struct inode *, sector_t block, long size);
+ int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t);
+ int dax_truncate_page(struct inode *, loff_t from, get_block_t);
+-int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t);
++int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
++ dax_iodone_t);
+ int dax_pfn_mkwrite(struct vm_area_struct *, struct vm_fault *);
+-#define dax_mkwrite(vma, vmf, gb) dax_fault(vma, vmf, gb)
++#define dax_mkwrite(vma, vmf, gb, iod) dax_fault(vma, vmf, gb, iod)
+
+ #ifdef CONFIG_BLOCK
+ typedef void (dio_submit_t)(int rw, struct bio *bio, struct inode *inode,
+diff --git a/include/linux/kernel.h b/include/linux/kernel.h
+index 3a5b48e52a9e..d837f2a41665 100644
+--- a/include/linux/kernel.h
++++ b/include/linux/kernel.h
+@@ -606,7 +606,7 @@ do { \
+
+ #define do_trace_printk(fmt, args...) \
+ do { \
+- static const char *trace_printk_fmt \
++ static const char *trace_printk_fmt __used \
+ __attribute__((section("__trace_printk_fmt"))) = \
+ __builtin_constant_p(fmt) ? fmt : NULL; \
+ \
+@@ -650,7 +650,7 @@ int __trace_printk(unsigned long ip, const char *fmt, ...);
+ */
+
+ #define trace_puts(str) ({ \
+- static const char *trace_printk_fmt \
++ static const char *trace_printk_fmt __used \
+ __attribute__((section("__trace_printk_fmt"))) = \
+ __builtin_constant_p(str) ? str : NULL; \
+ \
+@@ -672,7 +672,7 @@ extern void trace_dump_stack(int skip);
+ #define ftrace_vprintk(fmt, vargs) \
+ do { \
+ if (__builtin_constant_p(fmt)) { \
+- static const char *trace_printk_fmt \
++ static const char *trace_printk_fmt __used \
+ __attribute__((section("__trace_printk_fmt"))) = \
+ __builtin_constant_p(fmt) ? fmt : NULL; \
+ \
+diff --git a/include/linux/mm.h b/include/linux/mm.h
+index b2085582d44e..6b85ec64d302 100644
+--- a/include/linux/mm.h
++++ b/include/linux/mm.h
+@@ -588,7 +588,7 @@ static inline compound_page_dtor *get_compound_page_dtor(struct page *page)
+ return page[1].compound_dtor;
+ }
+
+-static inline int compound_order(struct page *page)
++static inline unsigned int compound_order(struct page *page)
+ {
+ if (!PageHead(page))
+ return 0;
+@@ -1771,7 +1771,8 @@ extern void si_meminfo(struct sysinfo * val);
+ extern void si_meminfo_node(struct sysinfo *val, int nid);
+
+ extern __printf(3, 4)
+-void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...);
++void warn_alloc_failed(gfp_t gfp_mask, unsigned int order,
++ const char *fmt, ...);
+
+ extern void setup_per_cpu_pageset(void);
+
+diff --git a/include/linux/module.h b/include/linux/module.h
+index c883b86ea964..b2da02e1591d 100644
+--- a/include/linux/module.h
++++ b/include/linux/module.h
+@@ -210,6 +210,12 @@ enum module_state {
+ MODULE_STATE_UNFORMED, /* Still setting it up. */
+ };
+
++struct mod_kallsyms {
++ Elf_Sym *symtab;
++ unsigned int num_symtab;
++ char *strtab;
++};
++
+ struct module {
+ enum module_state state;
+
+@@ -297,14 +303,9 @@ struct module {
+ #endif
+
+ #ifdef CONFIG_KALLSYMS
+- /*
+- * We keep the symbol and string tables for kallsyms.
+- * The core_* fields below are temporary, loader-only (they
+- * could really be discarded after module init).
+- */
+- Elf_Sym *symtab, *core_symtab;
+- unsigned int num_symtab, core_num_syms;
+- char *strtab, *core_strtab;
++ /* Protected by RCU and/or module_mutex: use rcu_dereference() */
++ struct mod_kallsyms *kallsyms;
++ struct mod_kallsyms core_kallsyms;
+
+ /* Section attributes */
+ struct module_sect_attrs *sect_attrs;
+diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h
+index 2baeee12f48e..e942558b3585 100644
+--- a/include/linux/pageblock-flags.h
++++ b/include/linux/pageblock-flags.h
+@@ -44,7 +44,7 @@ enum pageblock_bits {
+ #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
+
+ /* Huge page sizes are variable */
+-extern int pageblock_order;
++extern unsigned int pageblock_order;
+
+ #else /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */
+
+diff --git a/include/linux/pci.h b/include/linux/pci.h
+index 6e935e5eab56..109ccee9e3e6 100644
+--- a/include/linux/pci.h
++++ b/include/linux/pci.h
+@@ -357,6 +357,8 @@ struct pci_dev {
+ unsigned int broken_intx_masking:1;
+ unsigned int io_window_1k:1; /* Intel P2P bridge 1K I/O windows */
+ unsigned int irq_managed:1;
++ unsigned int has_secondary_link:1;
++ unsigned int non_compliant_bars:1; /* broken BARs; ignore them */
+ pci_dev_flags_t dev_flags;
+ atomic_t enable_cnt; /* pci_enable_device has been called */
+
+diff --git a/include/linux/poison.h b/include/linux/poison.h
+index 2110a81c5e2a..253c9b4198ef 100644
+--- a/include/linux/poison.h
++++ b/include/linux/poison.h
+@@ -19,8 +19,8 @@
+ * under normal circumstances, used to verify that nobody uses
+ * non-initialized list entries.
+ */
+-#define LIST_POISON1 ((void *) 0x00100100 + POISON_POINTER_DELTA)
+-#define LIST_POISON2 ((void *) 0x00200200 + POISON_POINTER_DELTA)
++#define LIST_POISON1 ((void *) 0x100 + POISON_POINTER_DELTA)
++#define LIST_POISON2 ((void *) 0x200 + POISON_POINTER_DELTA)
+
+ /********** include/linux/timer.h **********/
+ /*
+diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
+index 987a73a40ef8..998c098dd172 100644
+--- a/include/linux/ptrace.h
++++ b/include/linux/ptrace.h
+@@ -56,7 +56,29 @@ extern void exit_ptrace(struct task_struct *tracer, struct list_head *dead);
+ #define PTRACE_MODE_READ 0x01
+ #define PTRACE_MODE_ATTACH 0x02
+ #define PTRACE_MODE_NOAUDIT 0x04
+-/* Returns true on success, false on denial. */
++#define PTRACE_MODE_FSCREDS 0x08
++#define PTRACE_MODE_REALCREDS 0x10
++
++/* shorthands for READ/ATTACH and FSCREDS/REALCREDS combinations */
++#define PTRACE_MODE_READ_FSCREDS (PTRACE_MODE_READ | PTRACE_MODE_FSCREDS)
++#define PTRACE_MODE_READ_REALCREDS (PTRACE_MODE_READ | PTRACE_MODE_REALCREDS)
++#define PTRACE_MODE_ATTACH_FSCREDS (PTRACE_MODE_ATTACH | PTRACE_MODE_FSCREDS)
++#define PTRACE_MODE_ATTACH_REALCREDS (PTRACE_MODE_ATTACH | PTRACE_MODE_REALCREDS)
++
++/**
++ * ptrace_may_access - check whether the caller is permitted to access
++ * a target task.
++ * @task: target task
++ * @mode: selects type of access and caller credentials
++ *
++ * Returns true on success, false on denial.
++ *
++ * One of the flags PTRACE_MODE_FSCREDS and PTRACE_MODE_REALCREDS must
++ * be set in @mode to specify whether the access was requested through
++ * a filesystem syscall (should use effective capabilities and fsuid
++ * of the caller) or through an explicit syscall such as
++ * process_vm_writev or ptrace (and should use the real credentials).
++ */
+ extern bool ptrace_may_access(struct task_struct *task, unsigned int mode);
+
+ static inline int ptrace_reparented(struct task_struct *child)
+diff --git a/include/linux/thermal.h b/include/linux/thermal.h
+index 2e7d0f7a0ecc..63830c4a49e6 100644
+--- a/include/linux/thermal.h
++++ b/include/linux/thermal.h
+@@ -146,6 +146,7 @@ struct thermal_attr {
+ * @trip_hyst_attrs: attributes for trip points for sysfs: trip hysteresis
+ * @devdata: private pointer for device private data
+ * @trips: number of trip points the thermal zone supports
++ * @trips_disabled; bitmap for disabled trips
+ * @passive_delay: number of milliseconds to wait between polls when
+ * performing passive cooling. Currenty only used by the
+ * step-wise governor
+@@ -182,6 +183,7 @@ struct thermal_zone_device {
+ struct thermal_attr *trip_hyst_attrs;
+ void *devdata;
+ int trips;
++ unsigned long trips_disabled; /* bitmap for disabled trips */
+ int passive_delay;
+ int polling_delay;
+ int temperature;
+diff --git a/include/linux/tty.h b/include/linux/tty.h
+index 9580c09afdbe..5e704e26f9a2 100644
+--- a/include/linux/tty.h
++++ b/include/linux/tty.h
+@@ -592,7 +592,7 @@ static inline int tty_ldisc_receive_buf(struct tty_ldisc *ld, unsigned char *p,
+ count = ld->ops->receive_buf2(ld->tty, p, f, count);
+ else {
+ count = min_t(int, count, ld->tty->receive_room);
+- if (count)
++ if (count && ld->ops->receive_buf)
+ ld->ops->receive_buf(ld->tty, p, f, count);
+ }
+ return count;
+diff --git a/include/linux/ucs2_string.h b/include/linux/ucs2_string.h
+index cbb20afdbc01..bb679b48f408 100644
+--- a/include/linux/ucs2_string.h
++++ b/include/linux/ucs2_string.h
+@@ -11,4 +11,8 @@ unsigned long ucs2_strlen(const ucs2_char_t *s);
+ unsigned long ucs2_strsize(const ucs2_char_t *data, unsigned long maxlength);
+ int ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len);
+
++unsigned long ucs2_utf8size(const ucs2_char_t *src);
++unsigned long ucs2_as_utf8(u8 *dest, const ucs2_char_t *src,
++ unsigned long maxlength);
++
+ #endif /* _LINUX_UCS2_STRING_H_ */
+diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
+index 2a8aa9dfb83d..3b78437d0c4c 100644
+--- a/include/sound/hdaudio.h
++++ b/include/sound/hdaudio.h
+@@ -137,15 +137,15 @@ static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
+ }
+
+ #ifdef CONFIG_PM
+-void snd_hdac_power_up(struct hdac_device *codec);
+-void snd_hdac_power_down(struct hdac_device *codec);
+-void snd_hdac_power_up_pm(struct hdac_device *codec);
+-void snd_hdac_power_down_pm(struct hdac_device *codec);
++int snd_hdac_power_up(struct hdac_device *codec);
++int snd_hdac_power_down(struct hdac_device *codec);
++int snd_hdac_power_up_pm(struct hdac_device *codec);
++int snd_hdac_power_down_pm(struct hdac_device *codec);
+ #else
+-static inline void snd_hdac_power_up(struct hdac_device *codec) {}
+-static inline void snd_hdac_power_down(struct hdac_device *codec) {}
+-static inline void snd_hdac_power_up_pm(struct hdac_device *codec) {}
+-static inline void snd_hdac_power_down_pm(struct hdac_device *codec) {}
++static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; }
++static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; }
++static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; }
++static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; }
+ #endif
+
+ /*
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 66e6568a4736..6da64f0d0630 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -3314,7 +3314,7 @@ find_lively_task_by_vpid(pid_t vpid)
+
+ /* Reuse ptrace permission checks for now. */
+ err = -EACCES;
+- if (!ptrace_may_access(task, PTRACE_MODE_READ))
++ if (!ptrace_may_access(task, PTRACE_MODE_READ_REALCREDS))
+ goto errout;
+
+ return task;
+diff --git a/kernel/futex.c b/kernel/futex.c
+index f3043db6d36f..b75fbddacf0e 100644
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -2763,7 +2763,7 @@ SYSCALL_DEFINE3(get_robust_list, int, pid,
+ }
+
+ ret = -EPERM;
+- if (!ptrace_may_access(p, PTRACE_MODE_READ))
++ if (!ptrace_may_access(p, PTRACE_MODE_READ_REALCREDS))
+ goto err_unlock;
+
+ head = p->robust_list;
+diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
+index 55c8c9349cfe..4ae3232e7a28 100644
+--- a/kernel/futex_compat.c
++++ b/kernel/futex_compat.c
+@@ -155,7 +155,7 @@ COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,
+ }
+
+ ret = -EPERM;
+- if (!ptrace_may_access(p, PTRACE_MODE_READ))
++ if (!ptrace_may_access(p, PTRACE_MODE_READ_REALCREDS))
+ goto err_unlock;
+
+ head = p->compat_robust_list;
+diff --git a/kernel/kcmp.c b/kernel/kcmp.c
+index 0aa69ea1d8fd..3a47fa998fe0 100644
+--- a/kernel/kcmp.c
++++ b/kernel/kcmp.c
+@@ -122,8 +122,8 @@ SYSCALL_DEFINE5(kcmp, pid_t, pid1, pid_t, pid2, int, type,
+ &task2->signal->cred_guard_mutex);
+ if (ret)
+ goto err;
+- if (!ptrace_may_access(task1, PTRACE_MODE_READ) ||
+- !ptrace_may_access(task2, PTRACE_MODE_READ)) {
++ if (!ptrace_may_access(task1, PTRACE_MODE_READ_REALCREDS) ||
++ !ptrace_may_access(task2, PTRACE_MODE_READ_REALCREDS)) {
+ ret = -EPERM;
+ goto err_unlock;
+ }
+diff --git a/kernel/module.c b/kernel/module.c
+index 3b9ff966edb9..be8971d817ed 100644
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -178,6 +178,9 @@ struct load_info {
+ struct _ddebug *debug;
+ unsigned int num_debug;
+ bool sig_ok;
++#ifdef CONFIG_KALLSYMS
++ unsigned long mod_kallsyms_init_off;
++#endif
+ struct {
+ unsigned int sym, str, mod, vers, info, pcpu;
+ } index;
+@@ -2321,10 +2324,21 @@ static void layout_symtab(struct module *mod, struct load_info *info)
+ strsect->sh_flags |= SHF_ALLOC;
+ strsect->sh_entsize = get_offset(mod, &mod->init_size, strsect,
+ info->index.str) | INIT_OFFSET_MASK;
+- mod->init_size = debug_align(mod->init_size);
+ pr_debug("\t%s\n", info->secstrings + strsect->sh_name);
++
++ /* We'll tack temporary mod_kallsyms on the end. */
++ mod->init_size = ALIGN(mod->init_size,
++ __alignof__(struct mod_kallsyms));
++ info->mod_kallsyms_init_off = mod->init_size;
++ mod->init_size += sizeof(struct mod_kallsyms);
++ mod->init_size = debug_align(mod->init_size);
+ }
+
++/*
++ * We use the full symtab and strtab which layout_symtab arranged to
++ * be appended to the init section. Later we switch to the cut-down
++ * core-only ones.
++ */
+ static void add_kallsyms(struct module *mod, const struct load_info *info)
+ {
+ unsigned int i, ndst;
+@@ -2333,28 +2347,33 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
+ char *s;
+ Elf_Shdr *symsec = &info->sechdrs[info->index.sym];
+
+- mod->symtab = (void *)symsec->sh_addr;
+- mod->num_symtab = symsec->sh_size / sizeof(Elf_Sym);
++ /* Set up to point into init section. */
++ mod->kallsyms = mod->module_init + info->mod_kallsyms_init_off;
++
++ mod->kallsyms->symtab = (void *)symsec->sh_addr;
++ mod->kallsyms->num_symtab = symsec->sh_size / sizeof(Elf_Sym);
+ /* Make sure we get permanent strtab: don't use info->strtab. */
+- mod->strtab = (void *)info->sechdrs[info->index.str].sh_addr;
++ mod->kallsyms->strtab = (void *)info->sechdrs[info->index.str].sh_addr;
+
+ /* Set types up while we still have access to sections. */
+- for (i = 0; i < mod->num_symtab; i++)
+- mod->symtab[i].st_info = elf_type(&mod->symtab[i], info);
+-
+- mod->core_symtab = dst = mod->module_core + info->symoffs;
+- mod->core_strtab = s = mod->module_core + info->stroffs;
+- src = mod->symtab;
+- for (ndst = i = 0; i < mod->num_symtab; i++) {
++ for (i = 0; i < mod->kallsyms->num_symtab; i++)
++ mod->kallsyms->symtab[i].st_info
++ = elf_type(&mod->kallsyms->symtab[i], info);
++
++ /* Now populate the cut down core kallsyms for after init. */
++ mod->core_kallsyms.symtab = dst = mod->module_core + info->symoffs;
++ mod->core_kallsyms.strtab = s = mod->module_core + info->stroffs;
++ src = mod->kallsyms->symtab;
++ for (ndst = i = 0; i < mod->kallsyms->num_symtab; i++) {
+ if (i == 0 ||
+ is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum)) {
+ dst[ndst] = src[i];
+- dst[ndst++].st_name = s - mod->core_strtab;
+- s += strlcpy(s, &mod->strtab[src[i].st_name],
++ dst[ndst++].st_name = s - mod->core_kallsyms.strtab;
++ s += strlcpy(s, &mod->kallsyms->strtab[src[i].st_name],
+ KSYM_NAME_LEN) + 1;
+ }
+ }
+- mod->core_num_syms = ndst;
++ mod->core_kallsyms.num_symtab = ndst;
+ }
+ #else
+ static inline void layout_symtab(struct module *mod, struct load_info *info)
+@@ -3119,9 +3138,8 @@ static noinline int do_init_module(struct module *mod)
+ module_put(mod);
+ trim_init_extable(mod);
+ #ifdef CONFIG_KALLSYMS
+- mod->num_symtab = mod->core_num_syms;
+- mod->symtab = mod->core_symtab;
+- mod->strtab = mod->core_strtab;
++ /* Switch to core kallsyms now init is done: kallsyms may be walking! */
++ rcu_assign_pointer(mod->kallsyms, &mod->core_kallsyms);
+ #endif
+ unset_module_init_ro_nx(mod);
+ module_arch_freeing_init(mod);
+@@ -3469,6 +3487,11 @@ static inline int is_arm_mapping_symbol(const char *str)
+ && (str[2] == '\0' || str[2] == '.');
+ }
+
++static const char *symname(struct mod_kallsyms *kallsyms, unsigned int symnum)
++{
++ return kallsyms->strtab + kallsyms->symtab[symnum].st_name;
++}
++
+ static const char *get_ksymbol(struct module *mod,
+ unsigned long addr,
+ unsigned long *size,
+@@ -3476,6 +3499,7 @@ static const char *get_ksymbol(struct module *mod,
+ {
+ unsigned int i, best = 0;
+ unsigned long nextval;
++ struct mod_kallsyms *kallsyms = rcu_dereference_sched(mod->kallsyms);
+
+ /* At worse, next value is at end of module */
+ if (within_module_init(addr, mod))
+@@ -3485,32 +3509,32 @@ static const char *get_ksymbol(struct module *mod,
+
+ /* Scan for closest preceding symbol, and next symbol. (ELF
+ starts real symbols at 1). */
+- for (i = 1; i < mod->num_symtab; i++) {
+- if (mod->symtab[i].st_shndx == SHN_UNDEF)
++ for (i = 1; i < kallsyms->num_symtab; i++) {
++ if (kallsyms->symtab[i].st_shndx == SHN_UNDEF)
+ continue;
+
+ /* We ignore unnamed symbols: they're uninformative
+ * and inserted at a whim. */
+- if (mod->symtab[i].st_value <= addr
+- && mod->symtab[i].st_value > mod->symtab[best].st_value
+- && *(mod->strtab + mod->symtab[i].st_name) != '\0'
+- && !is_arm_mapping_symbol(mod->strtab + mod->symtab[i].st_name))
++ if (*symname(kallsyms, i) == '\0'
++ || is_arm_mapping_symbol(symname(kallsyms, i)))
++ continue;
++
++ if (kallsyms->symtab[i].st_value <= addr
++ && kallsyms->symtab[i].st_value > kallsyms->symtab[best].st_value)
+ best = i;
+- if (mod->symtab[i].st_value > addr
+- && mod->symtab[i].st_value < nextval
+- && *(mod->strtab + mod->symtab[i].st_name) != '\0'
+- && !is_arm_mapping_symbol(mod->strtab + mod->symtab[i].st_name))
+- nextval = mod->symtab[i].st_value;
++ if (kallsyms->symtab[i].st_value > addr
++ && kallsyms->symtab[i].st_value < nextval)
++ nextval = kallsyms->symtab[i].st_value;
+ }
+
+ if (!best)
+ return NULL;
+
+ if (size)
+- *size = nextval - mod->symtab[best].st_value;
++ *size = nextval - kallsyms->symtab[best].st_value;
+ if (offset)
+- *offset = addr - mod->symtab[best].st_value;
+- return mod->strtab + mod->symtab[best].st_name;
++ *offset = addr - kallsyms->symtab[best].st_value;
++ return symname(kallsyms, best);
+ }
+
+ /* For kallsyms to ask for address resolution. NULL means not found. Careful
+@@ -3603,19 +3627,21 @@ int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
+
+ preempt_disable();
+ list_for_each_entry_rcu(mod, &modules, list) {
++ struct mod_kallsyms *kallsyms;
++
+ if (mod->state == MODULE_STATE_UNFORMED)
+ continue;
+- if (symnum < mod->num_symtab) {
+- *value = mod->symtab[symnum].st_value;
+- *type = mod->symtab[symnum].st_info;
+- strlcpy(name, mod->strtab + mod->symtab[symnum].st_name,
+- KSYM_NAME_LEN);
++ kallsyms = rcu_dereference_sched(mod->kallsyms);
++ if (symnum < kallsyms->num_symtab) {
++ *value = kallsyms->symtab[symnum].st_value;
++ *type = kallsyms->symtab[symnum].st_info;
++ strlcpy(name, symname(kallsyms, symnum), KSYM_NAME_LEN);
+ strlcpy(module_name, mod->name, MODULE_NAME_LEN);
+ *exported = is_exported(name, *value, mod);
+ preempt_enable();
+ return 0;
+ }
+- symnum -= mod->num_symtab;
++ symnum -= kallsyms->num_symtab;
+ }
+ preempt_enable();
+ return -ERANGE;
+@@ -3624,11 +3650,12 @@ int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
+ static unsigned long mod_find_symname(struct module *mod, const char *name)
+ {
+ unsigned int i;
++ struct mod_kallsyms *kallsyms = rcu_dereference_sched(mod->kallsyms);
+
+- for (i = 0; i < mod->num_symtab; i++)
+- if (strcmp(name, mod->strtab+mod->symtab[i].st_name) == 0 &&
+- mod->symtab[i].st_info != 'U')
+- return mod->symtab[i].st_value;
++ for (i = 0; i < kallsyms->num_symtab; i++)
++ if (strcmp(name, symname(kallsyms, i)) == 0 &&
++ kallsyms->symtab[i].st_info != 'U')
++ return kallsyms->symtab[i].st_value;
+ return 0;
+ }
+
+@@ -3665,11 +3692,14 @@ int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
+ int ret;
+
+ list_for_each_entry(mod, &modules, list) {
++ /* We hold module_mutex: no need for rcu_dereference_sched */
++ struct mod_kallsyms *kallsyms = mod->kallsyms;
++
+ if (mod->state == MODULE_STATE_UNFORMED)
+ continue;
+- for (i = 0; i < mod->num_symtab; i++) {
+- ret = fn(data, mod->strtab + mod->symtab[i].st_name,
+- mod, mod->symtab[i].st_value);
++ for (i = 0; i < kallsyms->num_symtab; i++) {
++ ret = fn(data, symname(kallsyms, i),
++ mod, kallsyms->symtab[i].st_value);
+ if (ret != 0)
+ return ret;
+ }
+diff --git a/kernel/ptrace.c b/kernel/ptrace.c
+index c8e0e050a36a..261ee21e62db 100644
+--- a/kernel/ptrace.c
++++ b/kernel/ptrace.c
+@@ -219,6 +219,14 @@ static int ptrace_has_cap(struct user_namespace *ns, unsigned int mode)
+ static int __ptrace_may_access(struct task_struct *task, unsigned int mode)
+ {
+ const struct cred *cred = current_cred(), *tcred;
++ int dumpable = 0;
++ kuid_t caller_uid;
++ kgid_t caller_gid;
++
++ if (!(mode & PTRACE_MODE_FSCREDS) == !(mode & PTRACE_MODE_REALCREDS)) {
++ WARN(1, "denying ptrace access check without PTRACE_MODE_*CREDS\n");
++ return -EPERM;
++ }
+
+ /* May we inspect the given task?
+ * This check is used both for attaching with ptrace
+@@ -228,18 +236,33 @@ static int __ptrace_may_access(struct task_struct *task, unsigned int mode)
+ * because setting up the necessary parent/child relationship
+ * or halting the specified task is impossible.
+ */
+- int dumpable = 0;
++
+ /* Don't let security modules deny introspection */
+ if (same_thread_group(task, current))
+ return 0;
+ rcu_read_lock();
++ if (mode & PTRACE_MODE_FSCREDS) {
++ caller_uid = cred->fsuid;
++ caller_gid = cred->fsgid;
++ } else {
++ /*
++ * Using the euid would make more sense here, but something
++ * in userland might rely on the old behavior, and this
++ * shouldn't be a security problem since
++ * PTRACE_MODE_REALCREDS implies that the caller explicitly
++ * used a syscall that requests access to another process
++ * (and not a filesystem syscall to procfs).
++ */
++ caller_uid = cred->uid;
++ caller_gid = cred->gid;
++ }
+ tcred = __task_cred(task);
+- if (uid_eq(cred->uid, tcred->euid) &&
+- uid_eq(cred->uid, tcred->suid) &&
+- uid_eq(cred->uid, tcred->uid) &&
+- gid_eq(cred->gid, tcred->egid) &&
+- gid_eq(cred->gid, tcred->sgid) &&
+- gid_eq(cred->gid, tcred->gid))
++ if (uid_eq(caller_uid, tcred->euid) &&
++ uid_eq(caller_uid, tcred->suid) &&
++ uid_eq(caller_uid, tcred->uid) &&
++ gid_eq(caller_gid, tcred->egid) &&
++ gid_eq(caller_gid, tcred->sgid) &&
++ gid_eq(caller_gid, tcred->gid))
+ goto ok;
+ if (ptrace_has_cap(tcred->user_ns, mode))
+ goto ok;
+@@ -306,7 +329,7 @@ static int ptrace_attach(struct task_struct *task, long request,
+ goto out;
+
+ task_lock(task);
+- retval = __ptrace_may_access(task, PTRACE_MODE_ATTACH);
++ retval = __ptrace_may_access(task, PTRACE_MODE_ATTACH_REALCREDS);
+ task_unlock(task);
+ if (retval)
+ goto unlock_creds;
+diff --git a/kernel/resource.c b/kernel/resource.c
+index 90552aab5f2d..a7c27cb71fc5 100644
+--- a/kernel/resource.c
++++ b/kernel/resource.c
+@@ -1072,9 +1072,10 @@ struct resource * __request_region(struct resource *parent,
+ if (!conflict)
+ break;
+ if (conflict != parent) {
+- parent = conflict;
+- if (!(conflict->flags & IORESOURCE_BUSY))
++ if (!(conflict->flags & IORESOURCE_BUSY)) {
++ parent = conflict;
+ continue;
++ }
+ }
+ if (conflict->flags & flags & IORESOURCE_MUXED) {
+ add_wait_queue(&muxed_resource_wait, &wait);
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 4d870eb6086b..3b0f4c09ab92 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -6480,7 +6480,7 @@ static void sched_init_numa(void)
+
+ sched_domains_numa_masks[i][j] = mask;
+
+- for (k = 0; k < nr_node_ids; k++) {
++ for_each_node(k) {
+ if (node_distance(j, k) > sched_domains_numa_distance[i])
+ continue;
+
+diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
+index 8394b1ee600c..87b8576cbd50 100644
+--- a/kernel/sched/cputime.c
++++ b/kernel/sched/cputime.c
+@@ -259,21 +259,21 @@ static __always_inline bool steal_account_process_tick(void)
+ #ifdef CONFIG_PARAVIRT
+ if (static_key_false(¶virt_steal_enabled)) {
+ u64 steal;
+- cputime_t steal_ct;
++ unsigned long steal_jiffies;
+
+ steal = paravirt_steal_clock(smp_processor_id());
+ steal -= this_rq()->prev_steal_time;
+
+ /*
+- * cputime_t may be less precise than nsecs (eg: if it's
+- * based on jiffies). Lets cast the result to cputime
++ * steal is in nsecs but our caller is expecting steal
++ * time in jiffies. Lets cast the result to jiffies
+ * granularity and account the rest on the next rounds.
+ */
+- steal_ct = nsecs_to_cputime(steal);
+- this_rq()->prev_steal_time += cputime_to_nsecs(steal_ct);
++ steal_jiffies = nsecs_to_jiffies(steal);
++ this_rq()->prev_steal_time += jiffies_to_nsecs(steal_jiffies);
+
+- account_steal_time(steal_ct);
+- return steal_ct;
++ account_steal_time(jiffies_to_cputime(steal_jiffies));
++ return steal_jiffies;
+ }
+ #endif
+ return false;
+diff --git a/kernel/sysctl_binary.c b/kernel/sysctl_binary.c
+index 7e7746a42a62..10a1d7dc9313 100644
+--- a/kernel/sysctl_binary.c
++++ b/kernel/sysctl_binary.c
+@@ -1321,7 +1321,7 @@ static ssize_t binary_sysctl(const int *name, int nlen,
+ }
+
+ mnt = task_active_pid_ns(current)->proc_mnt;
+- file = file_open_root(mnt->mnt_root, mnt, pathname, flags);
++ file = file_open_root(mnt->mnt_root, mnt, pathname, flags, 0);
+ result = PTR_ERR(file);
+ if (IS_ERR(file))
+ goto out_putname;
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index 05330494a0df..de6ea94c41bb 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -4916,7 +4916,10 @@ static ssize_t tracing_splice_read_pipe(struct file *filp,
+
+ spd.nr_pages = i;
+
+- ret = splice_to_pipe(pipe, &spd);
++ if (i)
++ ret = splice_to_pipe(pipe, &spd);
++ else
++ ret = 0;
+ out:
+ splice_shrink_spd(&spd);
+ return ret;
+diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c
+index 36c1455b7567..6d6c0411cbe8 100644
+--- a/kernel/trace/trace_printk.c
++++ b/kernel/trace/trace_printk.c
+@@ -289,6 +289,9 @@ static int t_show(struct seq_file *m, void *v)
+ const char *str = *fmt;
+ int i;
+
++ if (!*fmt)
++ return 0;
++
+ seq_printf(m, "0x%lx : \"", *(unsigned long *)fmt);
+
+ /*
+diff --git a/kernel/watchdog.c b/kernel/watchdog.c
+index 581a68a04c64..f89ea713213f 100644
+--- a/kernel/watchdog.c
++++ b/kernel/watchdog.c
+@@ -812,6 +812,9 @@ static int proc_watchdog_common(int which, struct ctl_table *table, int write,
+ * Update the run state of the lockup detectors.
+ * Restore 'watchdog_enabled' on failure.
+ */
++ if (old == new)
++ goto out;
++
+ err = proc_watchdog_update();
+ if (err)
+ watchdog_enabled = old;
+@@ -857,7 +860,7 @@ int proc_soft_watchdog(struct ctl_table *table, int write,
+ int proc_watchdog_thresh(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+ {
+- int err, old;
++ int err, old, new;
+
+ mutex_lock(&watchdog_proc_mutex);
+
+@@ -871,6 +874,10 @@ int proc_watchdog_thresh(struct ctl_table *table, int write,
+ * Update the sample period.
+ * Restore 'watchdog_thresh' on failure.
+ */
++ new = ACCESS_ONCE(watchdog_thresh);
++ if (old == new)
++ goto out;
++
+ set_sample_period();
+ err = proc_watchdog_update();
+ if (err)
+diff --git a/lib/ucs2_string.c b/lib/ucs2_string.c
+index 6f500ef2301d..f0b323abb4c6 100644
+--- a/lib/ucs2_string.c
++++ b/lib/ucs2_string.c
+@@ -49,3 +49,65 @@ ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len)
+ }
+ }
+ EXPORT_SYMBOL(ucs2_strncmp);
++
++unsigned long
++ucs2_utf8size(const ucs2_char_t *src)
++{
++ unsigned long i;
++ unsigned long j = 0;
++
++ for (i = 0; i < ucs2_strlen(src); i++) {
++ u16 c = src[i];
++
++ if (c >= 0x800)
++ j += 3;
++ else if (c >= 0x80)
++ j += 2;
++ else
++ j += 1;
++ }
++
++ return j;
++}
++EXPORT_SYMBOL(ucs2_utf8size);
++
++/*
++ * copy at most maxlength bytes of whole utf8 characters to dest from the
++ * ucs2 string src.
++ *
++ * The return value is the number of characters copied, not including the
++ * final NUL character.
++ */
++unsigned long
++ucs2_as_utf8(u8 *dest, const ucs2_char_t *src, unsigned long maxlength)
++{
++ unsigned int i;
++ unsigned long j = 0;
++ unsigned long limit = ucs2_strnlen(src, maxlength);
++
++ for (i = 0; maxlength && i < limit; i++) {
++ u16 c = src[i];
++
++ if (c >= 0x800) {
++ if (maxlength < 3)
++ break;
++ maxlength -= 3;
++ dest[j++] = 0xe0 | (c & 0xf000) >> 12;
++ dest[j++] = 0x80 | (c & 0x0fc0) >> 6;
++ dest[j++] = 0x80 | (c & 0x003f);
++ } else if (c >= 0x80) {
++ if (maxlength < 2)
++ break;
++ maxlength -= 2;
++ dest[j++] = 0xc0 | (c & 0x7c0) >> 6;
++ dest[j++] = 0x80 | (c & 0x03f);
++ } else {
++ maxlength -= 1;
++ dest[j++] = c & 0x7f;
++ }
++ }
++ if (maxlength)
++ dest[j] = '\0';
++ return j;
++}
++EXPORT_SYMBOL(ucs2_as_utf8);
+diff --git a/mm/bootmem.c b/mm/bootmem.c
+index 477be696511d..a23dd1934654 100644
+--- a/mm/bootmem.c
++++ b/mm/bootmem.c
+@@ -164,7 +164,7 @@ void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
+ end = PFN_DOWN(physaddr + size);
+
+ for (; cursor < end; cursor++) {
+- __free_pages_bootmem(pfn_to_page(cursor), 0);
++ __free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
+ totalram_pages++;
+ }
+ }
+@@ -172,7 +172,7 @@ void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
+ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
+ {
+ struct page *page;
+- unsigned long *map, start, end, pages, count = 0;
++ unsigned long *map, start, end, pages, cur, count = 0;
+
+ if (!bdata->node_bootmem_map)
+ return 0;
+@@ -210,17 +210,17 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
+ if (IS_ALIGNED(start, BITS_PER_LONG) && vec == ~0UL) {
+ int order = ilog2(BITS_PER_LONG);
+
+- __free_pages_bootmem(pfn_to_page(start), order);
++ __free_pages_bootmem(pfn_to_page(start), start, order);
+ count += BITS_PER_LONG;
+ start += BITS_PER_LONG;
+ } else {
+- unsigned long cur = start;
++ cur = start;
+
+ start = ALIGN(start + 1, BITS_PER_LONG);
+ while (vec && cur != start) {
+ if (vec & 1) {
+ page = pfn_to_page(cur);
+- __free_pages_bootmem(page, 0);
++ __free_pages_bootmem(page, cur, 0);
+ count++;
+ }
+ vec >>= 1;
+@@ -229,12 +229,13 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
+ }
+ }
+
++ cur = bdata->node_min_pfn;
+ page = virt_to_page(bdata->node_bootmem_map);
+ pages = bdata->node_low_pfn - bdata->node_min_pfn;
+ pages = bootmem_bootmap_pages(pages);
+ count += pages;
+ while (pages--)
+- __free_pages_bootmem(page++, 0);
++ __free_pages_bootmem(page++, cur++, 0);
+
+ bdebug("nid=%td released=%lx\n", bdata - bootmem_node_data, count);
+
+diff --git a/mm/hugetlb.c b/mm/hugetlb.c
+index a6ff935476e3..9d724c0383d2 100644
+--- a/mm/hugetlb.c
++++ b/mm/hugetlb.c
+@@ -755,7 +755,7 @@ static int hstate_next_node_to_free(struct hstate *h, nodemask_t *nodes_allowed)
+
+ #if defined(CONFIG_CMA) && defined(CONFIG_X86_64)
+ static void destroy_compound_gigantic_page(struct page *page,
+- unsigned long order)
++ unsigned int order)
+ {
+ int i;
+ int nr_pages = 1 << order;
+@@ -771,7 +771,7 @@ static void destroy_compound_gigantic_page(struct page *page,
+ __ClearPageHead(page);
+ }
+
+-static void free_gigantic_page(struct page *page, unsigned order)
++static void free_gigantic_page(struct page *page, unsigned int order)
+ {
+ free_contig_range(page_to_pfn(page), 1 << order);
+ }
+@@ -815,7 +815,7 @@ static bool zone_spans_last_pfn(const struct zone *zone,
+ return zone_spans_pfn(zone, last_pfn);
+ }
+
+-static struct page *alloc_gigantic_page(int nid, unsigned order)
++static struct page *alloc_gigantic_page(int nid, unsigned int order)
+ {
+ unsigned long nr_pages = 1 << order;
+ unsigned long ret, pfn, flags;
+@@ -851,7 +851,7 @@ static struct page *alloc_gigantic_page(int nid, unsigned order)
+ }
+
+ static void prep_new_huge_page(struct hstate *h, struct page *page, int nid);
+-static void prep_compound_gigantic_page(struct page *page, unsigned long order);
++static void prep_compound_gigantic_page(struct page *page, unsigned int order);
+
+ static struct page *alloc_fresh_gigantic_page_node(struct hstate *h, int nid)
+ {
+@@ -884,9 +884,9 @@ static int alloc_fresh_gigantic_page(struct hstate *h,
+ static inline bool gigantic_page_supported(void) { return true; }
+ #else
+ static inline bool gigantic_page_supported(void) { return false; }
+-static inline void free_gigantic_page(struct page *page, unsigned order) { }
++static inline void free_gigantic_page(struct page *page, unsigned int order) { }
+ static inline void destroy_compound_gigantic_page(struct page *page,
+- unsigned long order) { }
++ unsigned int order) { }
+ static inline int alloc_fresh_gigantic_page(struct hstate *h,
+ nodemask_t *nodes_allowed) { return 0; }
+ #endif
+@@ -1013,7 +1013,7 @@ static void prep_new_huge_page(struct hstate *h, struct page *page, int nid)
+ put_page(page); /* free it into the hugepage allocator */
+ }
+
+-static void prep_compound_gigantic_page(struct page *page, unsigned long order)
++static void prep_compound_gigantic_page(struct page *page, unsigned int order)
+ {
+ int i;
+ int nr_pages = 1 << order;
+@@ -1567,7 +1567,8 @@ found:
+ return 1;
+ }
+
+-static void __init prep_compound_huge_page(struct page *page, int order)
++static void __init prep_compound_huge_page(struct page *page,
++ unsigned int order)
+ {
+ if (unlikely(order > (MAX_ORDER - 1)))
+ prep_compound_gigantic_page(page, order);
+@@ -2278,7 +2279,7 @@ static int __init hugetlb_init(void)
+ module_init(hugetlb_init);
+
+ /* Should be called on processing a hugepagesz=... option */
+-void __init hugetlb_add_hstate(unsigned order)
++void __init hugetlb_add_hstate(unsigned int order)
+ {
+ struct hstate *h;
+ unsigned long i;
+diff --git a/mm/internal.h b/mm/internal.h
+index a25e359a4039..a415872aab06 100644
+--- a/mm/internal.h
++++ b/mm/internal.h
+@@ -155,8 +155,9 @@ __find_buddy_index(unsigned long page_idx, unsigned int order)
+ }
+
+ extern int __isolate_free_page(struct page *page, unsigned int order);
+-extern void __free_pages_bootmem(struct page *page, unsigned int order);
+-extern void prep_compound_page(struct page *page, unsigned long order);
++extern void __free_pages_bootmem(struct page *page, unsigned long pfn,
++ unsigned int order);
++extern void prep_compound_page(struct page *page, unsigned int order);
+ #ifdef CONFIG_MEMORY_FAILURE
+ extern bool is_free_buddy_page(struct page *page);
+ #endif
+@@ -213,7 +214,7 @@ int find_suitable_fallback(struct free_area *area, unsigned int order,
+ * page cannot be allocated or merged in parallel. Alternatively, it must
+ * handle invalid values gracefully, and use page_order_unsafe() below.
+ */
+-static inline unsigned long page_order(struct page *page)
++static inline unsigned int page_order(struct page *page)
+ {
+ /* PageBuddy() must be checked by the caller */
+ return page_private(page);
+diff --git a/mm/memblock.c b/mm/memblock.c
+index 9318b567ed79..9742d1ac10a5 100644
+--- a/mm/memblock.c
++++ b/mm/memblock.c
+@@ -1316,7 +1316,7 @@ void __init __memblock_free_late(phys_addr_t base, phys_addr_t size)
+ end = PFN_DOWN(base + size);
+
+ for (; cursor < end; cursor++) {
+- __free_pages_bootmem(pfn_to_page(cursor), 0);
++ __free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
+ totalram_pages++;
+ }
+ }
+diff --git a/mm/memcontrol.c b/mm/memcontrol.c
+index aac1c98a9bc7..221762e24a68 100644
+--- a/mm/memcontrol.c
++++ b/mm/memcontrol.c
+@@ -5289,6 +5289,7 @@ static ssize_t memory_high_write(struct kernfs_open_file *of,
+ char *buf, size_t nbytes, loff_t off)
+ {
+ struct mem_cgroup *memcg = mem_cgroup_from_css(of_css(of));
++ unsigned long nr_pages;
+ unsigned long high;
+ int err;
+
+@@ -5299,6 +5300,11 @@ static ssize_t memory_high_write(struct kernfs_open_file *of,
+
+ memcg->high = high;
+
++ nr_pages = page_counter_read(&memcg->memory);
++ if (nr_pages > high)
++ try_to_free_mem_cgroup_pages(memcg, nr_pages - high,
++ GFP_KERNEL, true);
++
+ return nbytes;
+ }
+
+diff --git a/mm/nobootmem.c b/mm/nobootmem.c
+index 90b50468333e..4bea539921df 100644
+--- a/mm/nobootmem.c
++++ b/mm/nobootmem.c
+@@ -77,7 +77,7 @@ void __init free_bootmem_late(unsigned long addr, unsigned long size)
+ end = PFN_DOWN(addr + size);
+
+ for (; cursor < end; cursor++) {
+- __free_pages_bootmem(pfn_to_page(cursor), 0);
++ __free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
+ totalram_pages++;
+ }
+ }
+@@ -92,7 +92,7 @@ static void __init __free_pages_memory(unsigned long start, unsigned long end)
+ while (start + (1UL << order) > end)
+ order--;
+
+- __free_pages_bootmem(pfn_to_page(start), order);
++ __free_pages_bootmem(pfn_to_page(start), start, order);
+
+ start += (1UL << order);
+ }
+diff --git a/mm/page_alloc.c b/mm/page_alloc.c
+index 18490f3bd7f1..872b2ac95dec 100644
+--- a/mm/page_alloc.c
++++ b/mm/page_alloc.c
+@@ -162,7 +162,7 @@ bool pm_suspended_storage(void)
+ #endif /* CONFIG_PM_SLEEP */
+
+ #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
+-int pageblock_order __read_mostly;
++unsigned int pageblock_order __read_mostly;
+ #endif
+
+ static void __free_pages_ok(struct page *page, unsigned int order);
+@@ -362,7 +362,7 @@ static void free_compound_page(struct page *page)
+ __free_pages_ok(page, compound_order(page));
+ }
+
+-void prep_compound_page(struct page *page, unsigned long order)
++void prep_compound_page(struct page *page, unsigned int order)
+ {
+ int i;
+ int nr_pages = 1 << order;
+@@ -579,34 +579,28 @@ static inline void __free_one_page(struct page *page,
+ unsigned long combined_idx;
+ unsigned long uninitialized_var(buddy_idx);
+ struct page *buddy;
+- int max_order = MAX_ORDER;
++ unsigned int max_order;
++
++ max_order = min_t(unsigned int, MAX_ORDER, pageblock_order + 1);
+
+ VM_BUG_ON(!zone_is_initialized(zone));
+ VM_BUG_ON_PAGE(page->flags & PAGE_FLAGS_CHECK_AT_PREP, page);
+
+ VM_BUG_ON(migratetype == -1);
+- if (is_migrate_isolate(migratetype)) {
+- /*
+- * We restrict max order of merging to prevent merge
+- * between freepages on isolate pageblock and normal
+- * pageblock. Without this, pageblock isolation
+- * could cause incorrect freepage accounting.
+- */
+- max_order = min(MAX_ORDER, pageblock_order + 1);
+- } else {
++ if (likely(!is_migrate_isolate(migratetype)))
+ __mod_zone_freepage_state(zone, 1 << order, migratetype);
+- }
+
+- page_idx = pfn & ((1 << max_order) - 1);
++ page_idx = pfn & ((1 << MAX_ORDER) - 1);
+
+ VM_BUG_ON_PAGE(page_idx & ((1 << order) - 1), page);
+ VM_BUG_ON_PAGE(bad_range(zone, page), page);
+
++continue_merging:
+ while (order < max_order - 1) {
+ buddy_idx = __find_buddy_index(page_idx, order);
+ buddy = page + (buddy_idx - page_idx);
+ if (!page_is_buddy(page, buddy, order))
+- break;
++ goto done_merging;
+ /*
+ * Our buddy is free or it is CONFIG_DEBUG_PAGEALLOC guard page,
+ * merge with it and move up one order.
+@@ -623,6 +617,32 @@ static inline void __free_one_page(struct page *page,
+ page_idx = combined_idx;
+ order++;
+ }
++ if (max_order < MAX_ORDER) {
++ /* If we are here, it means order is >= pageblock_order.
++ * We want to prevent merge between freepages on isolate
++ * pageblock and normal pageblock. Without this, pageblock
++ * isolation could cause incorrect freepage or CMA accounting.
++ *
++ * We don't want to hit this code for the more frequent
++ * low-order merging.
++ */
++ if (unlikely(has_isolate_pageblock(zone))) {
++ int buddy_mt;
++
++ buddy_idx = __find_buddy_index(page_idx, order);
++ buddy = page + (buddy_idx - page_idx);
++ buddy_mt = get_pageblock_migratetype(buddy);
++
++ if (migratetype != buddy_mt
++ && (is_migrate_isolate(migratetype) ||
++ is_migrate_isolate(buddy_mt)))
++ goto done_merging;
++ }
++ max_order++;
++ goto continue_merging;
++ }
++
++done_merging:
+ set_page_order(page, order);
+
+ /*
+@@ -832,7 +852,8 @@ static void __free_pages_ok(struct page *page, unsigned int order)
+ local_irq_restore(flags);
+ }
+
+-void __init __free_pages_bootmem(struct page *page, unsigned int order)
++void __init __free_pages_bootmem(struct page *page, unsigned long pfn,
++ unsigned int order)
+ {
+ unsigned int nr_pages = 1 << order;
+ struct page *p = page;
+@@ -1066,7 +1087,7 @@ int move_freepages(struct zone *zone,
+ int migratetype)
+ {
+ struct page *page;
+- unsigned long order;
++ unsigned int order;
+ int pages_moved = 0;
+
+ #ifndef CONFIG_HOLES_IN_ZONE
+@@ -1180,7 +1201,7 @@ static bool can_steal_fallback(unsigned int order, int start_mt)
+ static void steal_suitable_fallback(struct zone *zone, struct page *page,
+ int start_type)
+ {
+- int current_order = page_order(page);
++ unsigned int current_order = page_order(page);
+ int pages;
+
+ /* Take ownership for orders >= pageblock_order */
+@@ -2283,7 +2304,7 @@ static DEFINE_RATELIMIT_STATE(nopage_rs,
+ DEFAULT_RATELIMIT_INTERVAL,
+ DEFAULT_RATELIMIT_BURST);
+
+-void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...)
++void warn_alloc_failed(gfp_t gfp_mask, unsigned int order, const char *fmt, ...)
+ {
+ unsigned int filter = SHOW_MEM_FILTER_NODES;
+
+@@ -2317,7 +2338,7 @@ void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...)
+ va_end(args);
+ }
+
+- pr_warn("%s: page allocation failure: order:%d, mode:0x%x\n",
++ pr_warn("%s: page allocation failure: order:%u, mode:0x%x\n",
+ current->comm, order, gfp_mask);
+
+ dump_stack();
+@@ -3018,7 +3039,8 @@ void free_kmem_pages(unsigned long addr, unsigned int order)
+ }
+ }
+
+-static void *make_alloc_exact(unsigned long addr, unsigned order, size_t size)
++static void *make_alloc_exact(unsigned long addr, unsigned int order,
++ size_t size)
+ {
+ if (addr) {
+ unsigned long alloc_end = addr + (PAGE_SIZE << order);
+@@ -3070,7 +3092,7 @@ EXPORT_SYMBOL(alloc_pages_exact);
+ */
+ void * __meminit alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask)
+ {
+- unsigned order = get_order(size);
++ unsigned int order = get_order(size);
+ struct page *p = alloc_pages_node(nid, gfp_mask, order);
+ if (!p)
+ return NULL;
+@@ -3372,7 +3394,8 @@ void show_free_areas(unsigned int filter)
+ }
+
+ for_each_populated_zone(zone) {
+- unsigned long nr[MAX_ORDER], flags, order, total = 0;
++ unsigned int order;
++ unsigned long nr[MAX_ORDER], flags, total = 0;
+ unsigned char types[MAX_ORDER];
+
+ if (skip_free_areas_node(filter, zone_to_nid(zone)))
+@@ -3721,7 +3744,7 @@ static void build_zonelists(pg_data_t *pgdat)
+ nodemask_t used_mask;
+ int local_node, prev_node;
+ struct zonelist *zonelist;
+- int order = current_zonelist_order;
++ unsigned int order = current_zonelist_order;
+
+ /* initialize zonelists */
+ for (i = 0; i < MAX_ZONELISTS; i++) {
+@@ -6408,7 +6431,8 @@ int alloc_contig_range(unsigned long start, unsigned long end,
+ unsigned migratetype)
+ {
+ unsigned long outer_start, outer_end;
+- int ret = 0, order;
++ unsigned int order;
++ int ret = 0;
+
+ struct compact_control cc = {
+ .nr_migratepages = 0,
+diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
+index e88d071648c2..5d453e58ddbf 100644
+--- a/mm/process_vm_access.c
++++ b/mm/process_vm_access.c
+@@ -194,7 +194,7 @@ static ssize_t process_vm_rw_core(pid_t pid, struct iov_iter *iter,
+ goto free_proc_pages;
+ }
+
+- mm = mm_access(task, PTRACE_MODE_ATTACH);
++ mm = mm_access(task, PTRACE_MODE_ATTACH_REALCREDS);
+ if (!mm || IS_ERR(mm)) {
+ rc = IS_ERR(mm) ? PTR_ERR(mm) : -ESRCH;
+ /*
+diff --git a/scripts/coccinelle/iterators/use_after_iter.cocci b/scripts/coccinelle/iterators/use_after_iter.cocci
+index f085f5968c52..ce8cc9c006e5 100644
+--- a/scripts/coccinelle/iterators/use_after_iter.cocci
++++ b/scripts/coccinelle/iterators/use_after_iter.cocci
+@@ -123,7 +123,7 @@ list_remove_head(x,c,...)
+ |
+ sizeof(<+...c...+>)
+ |
+-&c->member
++ &c->member
+ |
+ c = E
+ |
+diff --git a/security/commoncap.c b/security/commoncap.c
+index f2875cd9f677..4cdc8eb8d5d2 100644
+--- a/security/commoncap.c
++++ b/security/commoncap.c
+@@ -142,12 +142,17 @@ int cap_ptrace_access_check(struct task_struct *child, unsigned int mode)
+ {
+ int ret = 0;
+ const struct cred *cred, *child_cred;
++ const kernel_cap_t *caller_caps;
+
+ rcu_read_lock();
+ cred = current_cred();
+ child_cred = __task_cred(child);
++ if (mode & PTRACE_MODE_FSCREDS)
++ caller_caps = &cred->cap_effective;
++ else
++ caller_caps = &cred->cap_permitted;
+ if (cred->user_ns == child_cred->user_ns &&
+- cap_issubset(child_cred->cap_permitted, cred->cap_permitted))
++ cap_issubset(child_cred->cap_permitted, *caller_caps))
+ goto out;
+ if (ns_capable(child_cred->user_ns, CAP_SYS_PTRACE))
+ goto out;
+diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
+index 7bed4ad7cd76..0a374a2ce030 100644
+--- a/security/keys/encrypted-keys/encrypted.c
++++ b/security/keys/encrypted-keys/encrypted.c
+@@ -845,6 +845,8 @@ static int encrypted_update(struct key *key, struct key_preparsed_payload *prep)
+ size_t datalen = prep->datalen;
+ int ret = 0;
+
++ if (test_bit(KEY_FLAG_NEGATIVE, &key->flags))
++ return -ENOKEY;
+ if (datalen <= 0 || datalen > 32767 || !prep->data)
+ return -EINVAL;
+
+diff --git a/security/keys/trusted.c b/security/keys/trusted.c
+index c0594cb07ada..aeb38f1a12e7 100644
+--- a/security/keys/trusted.c
++++ b/security/keys/trusted.c
+@@ -984,13 +984,16 @@ static void trusted_rcu_free(struct rcu_head *rcu)
+ */
+ static int trusted_update(struct key *key, struct key_preparsed_payload *prep)
+ {
+- struct trusted_key_payload *p = key->payload.data;
++ struct trusted_key_payload *p;
+ struct trusted_key_payload *new_p;
+ struct trusted_key_options *new_o;
+ size_t datalen = prep->datalen;
+ char *datablob;
+ int ret = 0;
+
++ if (test_bit(KEY_FLAG_NEGATIVE, &key->flags))
++ return -ENOKEY;
++ p = key->payload.data;
+ if (!p->migratable)
+ return -EPERM;
+ if (datalen <= 0 || datalen > 32767 || !prep->data)
+diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
+index 36b47bbd3d8c..7cf22260bdff 100644
+--- a/security/keys/user_defined.c
++++ b/security/keys/user_defined.c
+@@ -120,7 +120,10 @@ int user_update(struct key *key, struct key_preparsed_payload *prep)
+
+ if (ret == 0) {
+ /* attach the new data, displacing the old */
+- zap = key->payload.data;
++ if (!test_bit(KEY_FLAG_NEGATIVE, &key->flags))
++ zap = key->payload.data;
++ else
++ zap = NULL;
+ rcu_assign_keypointer(key, upayload);
+ key->expiry = 0;
+ }
+diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
+index b644757886bc..e45f0a3df127 100644
+--- a/security/smack/smack_lsm.c
++++ b/security/smack/smack_lsm.c
+@@ -354,12 +354,10 @@ static int smk_copy_rules(struct list_head *nhead, struct list_head *ohead,
+ */
+ static inline unsigned int smk_ptrace_mode(unsigned int mode)
+ {
+- switch (mode) {
+- case PTRACE_MODE_READ:
+- return MAY_READ;
+- case PTRACE_MODE_ATTACH:
++ if (mode & PTRACE_MODE_ATTACH)
+ return MAY_READWRITE;
+- }
++ if (mode & PTRACE_MODE_READ)
++ return MAY_READ;
+
+ return 0;
+ }
+diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
+index 24aae2ae2b30..d3f7fb55b835 100644
+--- a/security/yama/yama_lsm.c
++++ b/security/yama/yama_lsm.c
+@@ -292,7 +292,7 @@ int yama_ptrace_access_check(struct task_struct *child,
+ return rc;
+
+ /* require ptrace target be a child of ptracer on attach */
+- if (mode == PTRACE_MODE_ATTACH) {
++ if (mode & PTRACE_MODE_ATTACH) {
+ switch (ptrace_scope) {
+ case YAMA_SCOPE_DISABLED:
+ /* No additional restrictions. */
+@@ -318,7 +318,7 @@ int yama_ptrace_access_check(struct task_struct *child,
+ }
+ }
+
+- if (rc) {
++ if (rc && (mode & PTRACE_MODE_NOAUDIT) == 0) {
+ printk_ratelimited(KERN_NOTICE
+ "ptrace of pid %d was attempted by: %s (pid %d)\n",
+ child->pid, current->comm, current->pid);
+diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c
+index f75bf5622687..961ca32ee989 100644
+--- a/sound/hda/hdac_device.c
++++ b/sound/hda/hdac_device.c
+@@ -500,23 +500,27 @@ EXPORT_SYMBOL_GPL(snd_hdac_get_connections);
+ * This function calls the runtime PM helper to power up the given codec.
+ * Unlike snd_hdac_power_up_pm(), you should call this only for the code
+ * path that isn't included in PM path. Otherwise it gets stuck.
++ *
++ * Returns zero if successful, or a negative error code.
+ */
+-void snd_hdac_power_up(struct hdac_device *codec)
++int snd_hdac_power_up(struct hdac_device *codec)
+ {
+- pm_runtime_get_sync(&codec->dev);
++ return pm_runtime_get_sync(&codec->dev);
+ }
+ EXPORT_SYMBOL_GPL(snd_hdac_power_up);
+
+ /**
+ * snd_hdac_power_down - power down the codec
+ * @codec: the codec object
++ *
++ * Returns zero if successful, or a negative error code.
+ */
+-void snd_hdac_power_down(struct hdac_device *codec)
++int snd_hdac_power_down(struct hdac_device *codec)
+ {
+ struct device *dev = &codec->dev;
+
+ pm_runtime_mark_last_busy(dev);
+- pm_runtime_put_autosuspend(dev);
++ return pm_runtime_put_autosuspend(dev);
+ }
+ EXPORT_SYMBOL_GPL(snd_hdac_power_down);
+
+@@ -528,11 +532,14 @@ EXPORT_SYMBOL_GPL(snd_hdac_power_down);
+ * which may be called by PM suspend/resume again. OTOH, if a power-up
+ * call must wake up the sleeper (e.g. in a kctl callback), use
+ * snd_hdac_power_up() instead.
++ *
++ * Returns zero if successful, or a negative error code.
+ */
+-void snd_hdac_power_up_pm(struct hdac_device *codec)
++int snd_hdac_power_up_pm(struct hdac_device *codec)
+ {
+ if (!atomic_inc_not_zero(&codec->in_pm))
+- snd_hdac_power_up(codec);
++ return snd_hdac_power_up(codec);
++ return 0;
+ }
+ EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
+
+@@ -542,11 +549,14 @@ EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
+ *
+ * Like snd_hdac_power_up_pm(), this function is used in a recursive
+ * code path like init code which may be called by PM suspend/resume again.
++ *
++ * Returns zero if successful, or a negative error code.
+ */
+-void snd_hdac_power_down_pm(struct hdac_device *codec)
++int snd_hdac_power_down_pm(struct hdac_device *codec)
+ {
+ if (atomic_dec_if_positive(&codec->in_pm) < 0)
+- snd_hdac_power_down(codec);
++ return snd_hdac_power_down(codec);
++ return 0;
+ }
+ EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
+ #endif
+diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c
+index 1eabcdf69457..b0ed870ffb88 100644
+--- a/sound/hda/hdac_regmap.c
++++ b/sound/hda/hdac_regmap.c
+@@ -410,8 +410,9 @@ int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg,
+
+ err = reg_raw_write(codec, reg, val);
+ if (err == -EAGAIN) {
+- snd_hdac_power_up_pm(codec);
+- err = reg_raw_write(codec, reg, val);
++ err = snd_hdac_power_up_pm(codec);
++ if (!err)
++ err = reg_raw_write(codec, reg, val);
+ snd_hdac_power_down_pm(codec);
+ }
+ return err;
+@@ -442,8 +443,9 @@ int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg,
+
+ err = reg_raw_read(codec, reg, val);
+ if (err == -EAGAIN) {
+- snd_hdac_power_up_pm(codec);
+- err = reg_raw_read(codec, reg, val);
++ err = snd_hdac_power_up_pm(codec);
++ if (!err)
++ err = reg_raw_read(codec, reg, val);
+ snd_hdac_power_down_pm(codec);
+ }
+ return err;
+diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
+index 194627c6c42b..16e0ebacbdb0 100644
+--- a/sound/pci/hda/hda_generic.c
++++ b/sound/pci/hda/hda_generic.c
+@@ -771,9 +771,6 @@ static void activate_amp(struct hda_codec *codec, hda_nid_t nid, int dir,
+ unsigned int caps;
+ unsigned int mask, val;
+
+- if (!enable && is_active_nid(codec, nid, dir, idx_to_check))
+- return;
+-
+ caps = query_amp_caps(codec, nid, dir);
+ val = get_amp_val_to_activate(codec, nid, dir, caps, enable);
+ mask = get_amp_mask_to_modify(codec, nid, dir, idx_to_check, caps);
+@@ -784,12 +781,22 @@ static void activate_amp(struct hda_codec *codec, hda_nid_t nid, int dir,
+ update_amp(codec, nid, dir, idx, mask, val);
+ }
+
++static void check_and_activate_amp(struct hda_codec *codec, hda_nid_t nid,
++ int dir, int idx, int idx_to_check,
++ bool enable)
++{
++ /* check whether the given amp is still used by others */
++ if (!enable && is_active_nid(codec, nid, dir, idx_to_check))
++ return;
++ activate_amp(codec, nid, dir, idx, idx_to_check, enable);
++}
++
+ static void activate_amp_out(struct hda_codec *codec, struct nid_path *path,
+ int i, bool enable)
+ {
+ hda_nid_t nid = path->path[i];
+ init_amp(codec, nid, HDA_OUTPUT, 0);
+- activate_amp(codec, nid, HDA_OUTPUT, 0, 0, enable);
++ check_and_activate_amp(codec, nid, HDA_OUTPUT, 0, 0, enable);
+ }
+
+ static void activate_amp_in(struct hda_codec *codec, struct nid_path *path,
+@@ -817,9 +824,16 @@ static void activate_amp_in(struct hda_codec *codec, struct nid_path *path,
+ * when aa-mixer is available, we need to enable the path as well
+ */
+ for (n = 0; n < nums; n++) {
+- if (n != idx && (!add_aamix || conn[n] != spec->mixer_merge_nid))
+- continue;
+- activate_amp(codec, nid, HDA_INPUT, n, idx, enable);
++ if (n != idx) {
++ if (conn[n] != spec->mixer_merge_nid)
++ continue;
++ /* when aamix is disabled, force to off */
++ if (!add_aamix) {
++ activate_amp(codec, nid, HDA_INPUT, n, n, false);
++ continue;
++ }
++ }
++ check_and_activate_amp(codec, nid, HDA_INPUT, n, idx, enable);
+ }
+ }
+
+@@ -1580,6 +1594,12 @@ static bool map_singles(struct hda_codec *codec, int outs,
+ return found;
+ }
+
++static inline bool has_aamix_out_paths(struct hda_gen_spec *spec)
++{
++ return spec->aamix_out_paths[0] || spec->aamix_out_paths[1] ||
++ spec->aamix_out_paths[2];
++}
++
+ /* create a new path including aamix if available, and return its index */
+ static int check_aamix_out_path(struct hda_codec *codec, int path_idx)
+ {
+@@ -2422,25 +2442,51 @@ static void update_aamix_paths(struct hda_codec *codec, bool do_mix,
+ }
+ }
+
++/* re-initialize the output paths; only called from loopback_mixing_put() */
++static void update_output_paths(struct hda_codec *codec, int num_outs,
++ const int *paths)
++{
++ struct hda_gen_spec *spec = codec->spec;
++ struct nid_path *path;
++ int i;
++
++ for (i = 0; i < num_outs; i++) {
++ path = snd_hda_get_path_from_idx(codec, paths[i]);
++ if (path)
++ snd_hda_activate_path(codec, path, path->active,
++ spec->aamix_mode);
++ }
++}
++
+ static int loopback_mixing_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+ {
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct hda_gen_spec *spec = codec->spec;
++ const struct auto_pin_cfg *cfg = &spec->autocfg;
+ unsigned int val = ucontrol->value.enumerated.item[0];
+
+ if (val == spec->aamix_mode)
+ return 0;
+ spec->aamix_mode = val;
+- update_aamix_paths(codec, val, spec->out_paths[0],
+- spec->aamix_out_paths[0],
+- spec->autocfg.line_out_type);
+- update_aamix_paths(codec, val, spec->hp_paths[0],
+- spec->aamix_out_paths[1],
+- AUTO_PIN_HP_OUT);
+- update_aamix_paths(codec, val, spec->speaker_paths[0],
+- spec->aamix_out_paths[2],
+- AUTO_PIN_SPEAKER_OUT);
++ if (has_aamix_out_paths(spec)) {
++ update_aamix_paths(codec, val, spec->out_paths[0],
++ spec->aamix_out_paths[0],
++ cfg->line_out_type);
++ update_aamix_paths(codec, val, spec->hp_paths[0],
++ spec->aamix_out_paths[1],
++ AUTO_PIN_HP_OUT);
++ update_aamix_paths(codec, val, spec->speaker_paths[0],
++ spec->aamix_out_paths[2],
++ AUTO_PIN_SPEAKER_OUT);
++ } else {
++ update_output_paths(codec, cfg->line_outs, spec->out_paths);
++ if (cfg->line_out_type != AUTO_PIN_HP_OUT)
++ update_output_paths(codec, cfg->hp_outs, spec->hp_paths);
++ if (cfg->line_out_type != AUTO_PIN_SPEAKER_OUT)
++ update_output_paths(codec, cfg->speaker_outs,
++ spec->speaker_paths);
++ }
+ return 1;
+ }
+
+@@ -2458,12 +2504,13 @@ static int create_loopback_mixing_ctl(struct hda_codec *codec)
+
+ if (!spec->mixer_nid)
+ return 0;
+- if (!(spec->aamix_out_paths[0] || spec->aamix_out_paths[1] ||
+- spec->aamix_out_paths[2]))
+- return 0;
+ if (!snd_hda_gen_add_kctl(spec, NULL, &loopback_mixing_enum))
+ return -ENOMEM;
+ spec->have_aamix_ctl = 1;
++ /* if no explicit aamix path is present (e.g. for Realtek codecs),
++ * enable aamix as default -- just for compatibility
++ */
++ spec->aamix_mode = !has_aamix_out_paths(spec);
+ return 0;
+ }
+
+@@ -5664,6 +5711,8 @@ static void init_aamix_paths(struct hda_codec *codec)
+
+ if (!spec->have_aamix_ctl)
+ return;
++ if (!has_aamix_out_paths(spec))
++ return;
+ update_aamix_paths(codec, spec->aamix_mode, spec->out_paths[0],
+ spec->aamix_out_paths[0],
+ spec->autocfg.line_out_type);
+diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
+index 8f50a257a80d..aeb054ca9ed9 100644
+--- a/sound/pci/hda/patch_cirrus.c
++++ b/sound/pci/hda/patch_cirrus.c
+@@ -174,8 +174,12 @@ static void cs_automute(struct hda_codec *codec)
+ snd_hda_gen_update_outputs(codec);
+
+ if (spec->gpio_eapd_hp || spec->gpio_eapd_speaker) {
+- spec->gpio_data = spec->gen.hp_jack_present ?
+- spec->gpio_eapd_hp : spec->gpio_eapd_speaker;
++ if (spec->gen.automute_speaker)
++ spec->gpio_data = spec->gen.hp_jack_present ?
++ spec->gpio_eapd_hp : spec->gpio_eapd_speaker;
++ else
++ spec->gpio_data =
++ spec->gpio_eapd_hp | spec->gpio_eapd_speaker;
+ snd_hda_codec_write(codec, 0x01, 0,
+ AC_VERB_SET_GPIO_DATA, spec->gpio_data);
+ }
+diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
+index 488f4c7be33e..91b77bad03ea 100644
+--- a/sound/pci/hda/patch_conexant.c
++++ b/sound/pci/hda/patch_conexant.c
+@@ -204,8 +204,13 @@ static void cx_auto_reboot_notify(struct hda_codec *codec)
+ {
+ struct conexant_spec *spec = codec->spec;
+
+- if (codec->core.vendor_id != 0x14f150f2)
++ switch (codec->core.vendor_id) {
++ case 0x14f150f2: /* CX20722 */
++ case 0x14f150f4: /* CX20724 */
++ break;
++ default:
+ return;
++ }
+
+ /* Turn the CX20722 codec into D3 to avoid spurious noises
+ from the internal speaker during (and after) reboot */
+diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
+index 51d519554744..193426e223c9 100644
+--- a/sound/pci/hda/patch_hdmi.c
++++ b/sound/pci/hda/patch_hdmi.c
+@@ -1526,6 +1526,57 @@ static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
+ return 0;
+ }
+
++/* update per_pin ELD from the given new ELD;
++ * setup info frame and notification accordingly
++ */
++static void update_eld(struct hda_codec *codec,
++ struct hdmi_spec_per_pin *per_pin,
++ struct hdmi_eld *eld)
++{
++ struct hdmi_eld *pin_eld = &per_pin->sink_eld;
++ bool old_eld_valid = pin_eld->eld_valid;
++ bool eld_changed;
++
++ if (eld->eld_valid)
++ snd_hdmi_show_eld(codec, &eld->info);
++
++ eld_changed = (pin_eld->eld_valid != eld->eld_valid);
++ if (eld->eld_valid && pin_eld->eld_valid)
++ if (pin_eld->eld_size != eld->eld_size ||
++ memcmp(pin_eld->eld_buffer, eld->eld_buffer,
++ eld->eld_size) != 0)
++ eld_changed = true;
++
++ pin_eld->monitor_present = eld->monitor_present;
++ pin_eld->eld_valid = eld->eld_valid;
++ pin_eld->eld_size = eld->eld_size;
++ if (eld->eld_valid)
++ memcpy(pin_eld->eld_buffer, eld->eld_buffer, eld->eld_size);
++ pin_eld->info = eld->info;
++
++ /*
++ * Re-setup pin and infoframe. This is needed e.g. when
++ * - sink is first plugged-in
++ * - transcoder can change during stream playback on Haswell
++ * and this can make HW reset converter selection on a pin.
++ */
++ if (eld->eld_valid && !old_eld_valid && per_pin->setup) {
++ if (is_haswell_plus(codec) || is_valleyview_plus(codec)) {
++ intel_verify_pin_cvt_connect(codec, per_pin);
++ intel_not_share_assigned_cvt(codec, per_pin->pin_nid,
++ per_pin->mux_idx);
++ }
++
++ hdmi_setup_audio_infoframe(codec, per_pin, per_pin->non_pcm);
++ }
++
++ if (eld_changed)
++ snd_ctl_notify(codec->card,
++ SNDRV_CTL_EVENT_MASK_VALUE |
++ SNDRV_CTL_EVENT_MASK_INFO,
++ &per_pin->eld_ctl->id);
++}
++
+ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
+ {
+ struct hda_jack_tbl *jack;
+@@ -1543,8 +1594,6 @@ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
+ * the unsolicited response to avoid custom WARs.
+ */
+ int present;
+- bool update_eld = false;
+- bool eld_changed = false;
+ bool ret;
+
+ snd_hda_power_up_pm(codec);
+@@ -1552,6 +1601,8 @@ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
+
+ mutex_lock(&per_pin->lock);
+ pin_eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
++ eld->monitor_present = pin_eld->monitor_present;
++
+ if (pin_eld->monitor_present)
+ eld->eld_valid = !!(present & AC_PINSENSE_ELDV);
+ else
+@@ -1571,61 +1622,13 @@ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
+ eld->eld_size) < 0)
+ eld->eld_valid = false;
+ }
+-
+- if (eld->eld_valid) {
+- snd_hdmi_show_eld(codec, &eld->info);
+- update_eld = true;
+- }
+- else if (repoll) {
+- schedule_delayed_work(&per_pin->work,
+- msecs_to_jiffies(300));
+- goto unlock;
+- }
+ }
+
+- if (pin_eld->eld_valid != eld->eld_valid)
+- eld_changed = true;
+-
+- if (pin_eld->eld_valid && !eld->eld_valid)
+- update_eld = true;
+-
+- if (update_eld) {
+- bool old_eld_valid = pin_eld->eld_valid;
+- pin_eld->eld_valid = eld->eld_valid;
+- if (pin_eld->eld_size != eld->eld_size ||
+- memcmp(pin_eld->eld_buffer, eld->eld_buffer,
+- eld->eld_size) != 0) {
+- memcpy(pin_eld->eld_buffer, eld->eld_buffer,
+- eld->eld_size);
+- eld_changed = true;
+- }
+- pin_eld->eld_size = eld->eld_size;
+- pin_eld->info = eld->info;
+-
+- /*
+- * Re-setup pin and infoframe. This is needed e.g. when
+- * - sink is first plugged-in (infoframe is not set up if !monitor_present)
+- * - transcoder can change during stream playback on Haswell
+- * and this can make HW reset converter selection on a pin.
+- */
+- if (eld->eld_valid && !old_eld_valid && per_pin->setup) {
+- if (is_haswell_plus(codec) ||
+- is_valleyview_plus(codec)) {
+- intel_verify_pin_cvt_connect(codec, per_pin);
+- intel_not_share_assigned_cvt(codec, pin_nid,
+- per_pin->mux_idx);
+- }
+-
+- hdmi_setup_audio_infoframe(codec, per_pin,
+- per_pin->non_pcm);
+- }
+- }
++ if (!eld->eld_valid && repoll)
++ schedule_delayed_work(&per_pin->work, msecs_to_jiffies(300));
++ else
++ update_eld(codec, per_pin, eld);
+
+- if (eld_changed)
+- snd_ctl_notify(codec->card,
+- SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO,
+- &per_pin->eld_ctl->id);
+- unlock:
+ ret = !repoll || !pin_eld->monitor_present || pin_eld->eld_valid;
+
+ jack = snd_hda_jack_tbl_get(codec, pin_nid);
+@@ -3336,6 +3339,8 @@ static const struct hda_codec_preset snd_hda_preset_hdmi[] = {
+ { .id = 0x10de0071, .name = "GPU 71 HDMI/DP", .patch = patch_nvhdmi },
+ { .id = 0x10de0072, .name = "GPU 72 HDMI/DP", .patch = patch_nvhdmi },
+ { .id = 0x10de007d, .name = "GPU 7d HDMI/DP", .patch = patch_nvhdmi },
++{ .id = 0x10de0082, .name = "GPU 82 HDMI/DP", .patch = patch_nvhdmi },
++{ .id = 0x10de0083, .name = "GPU 83 HDMI/DP", .patch = patch_nvhdmi },
+ { .id = 0x10de8001, .name = "MCP73 HDMI", .patch = patch_nvhdmi_2ch },
+ { .id = 0x11069f80, .name = "VX900 HDMI/DP", .patch = patch_via_hdmi },
+ { .id = 0x11069f81, .name = "VX900 HDMI/DP", .patch = patch_via_hdmi },
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 91cc6897d595..90cf6168267e 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4608,6 +4608,7 @@ enum {
+ ALC290_FIXUP_SUBWOOFER,
+ ALC290_FIXUP_SUBWOOFER_HSJACK,
+ ALC269_FIXUP_THINKPAD_ACPI,
++ ALC269_FIXUP_DMIC_THINKPAD_ACPI,
+ ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC255_FIXUP_DELL2_MIC_NO_PRESENCE,
+ ALC255_FIXUP_HEADSET_MODE,
+@@ -5046,6 +5047,12 @@ static const struct hda_fixup alc269_fixups[] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = hda_fixup_thinkpad_acpi,
+ },
++ [ALC269_FIXUP_DMIC_THINKPAD_ACPI] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_inv_dmic,
++ .chained = true,
++ .chain_id = ALC269_FIXUP_THINKPAD_ACPI,
++ },
+ [ALC255_FIXUP_DELL1_MIC_NO_PRESENCE] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+@@ -5280,6 +5287,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1025, 0x106d, "Acer Cloudbook 14", ALC283_FIXUP_CHROME_BOOK),
+ SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z),
+ SND_PCI_QUIRK(0x1028, 0x054b, "Dell XPS one 2710", ALC275_FIXUP_DELL_XPS),
++ SND_PCI_QUIRK(0x1028, 0x05bd, "Dell Latitude E6440", ALC292_FIXUP_DELL_E7X),
++ SND_PCI_QUIRK(0x1028, 0x05be, "Dell Latitude E6540", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x05ca, "Dell Latitude E7240", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x05cb, "Dell Latitude E7440", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x05da, "Dell Vostro 5460", ALC290_FIXUP_SUBWOOFER),
+@@ -5414,6 +5423,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
+ SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
++ SND_PCI_QUIRK(0x17aa, 0x30e2, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
++ SND_PCI_QUIRK(0x17aa, 0x3902, "Lenovo E50-80", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
+ SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
+ SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
+ SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
+index b120925223ae..51a684c6d8e3 100644
+--- a/sound/pci/intel8x0.c
++++ b/sound/pci/intel8x0.c
+@@ -2879,6 +2879,7 @@ static void intel8x0_measure_ac97_clock(struct intel8x0 *chip)
+
+ static struct snd_pci_quirk intel8x0_clock_list[] = {
+ SND_PCI_QUIRK(0x0e11, 0x008a, "AD1885", 41000),
++ SND_PCI_QUIRK(0x1014, 0x0581, "AD1981B", 48000),
+ SND_PCI_QUIRK(0x1028, 0x00be, "AD1885", 44100),
+ SND_PCI_QUIRK(0x1028, 0x0177, "AD1980", 48000),
+ SND_PCI_QUIRK(0x1028, 0x01ad, "AD1981B", 48000),
+diff --git a/sound/usb/card.c b/sound/usb/card.c
+index 0450593980fd..86cf7b585e01 100644
+--- a/sound/usb/card.c
++++ b/sound/usb/card.c
+@@ -365,13 +365,15 @@ static int snd_usb_audio_create(struct usb_interface *intf,
+ }
+
+ mutex_init(&chip->mutex);
+- init_rwsem(&chip->shutdown_rwsem);
++ init_waitqueue_head(&chip->shutdown_wait);
+ chip->index = idx;
+ chip->dev = dev;
+ chip->card = card;
+ chip->setup = device_setup[idx];
+ chip->autoclock = autoclock;
+ chip->probing = 1;
++ atomic_set(&chip->usage_count, 0);
++ atomic_set(&chip->shutdown, 0);
+
+ chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct));
+@@ -495,7 +497,7 @@ static int usb_audio_probe(struct usb_interface *intf,
+ mutex_lock(®ister_mutex);
+ for (i = 0; i < SNDRV_CARDS; i++) {
+ if (usb_chip[i] && usb_chip[i]->dev == dev) {
+- if (usb_chip[i]->shutdown) {
++ if (atomic_read(&usb_chip[i]->shutdown)) {
+ dev_err(&dev->dev, "USB device is in the shutdown state, cannot create a card instance\n");
+ err = -EIO;
+ goto __error;
+@@ -585,23 +587,23 @@ static void usb_audio_disconnect(struct usb_interface *intf)
+ struct snd_usb_audio *chip = usb_get_intfdata(intf);
+ struct snd_card *card;
+ struct list_head *p;
+- bool was_shutdown;
+
+ if (chip == (void *)-1L)
+ return;
+
+ card = chip->card;
+- down_write(&chip->shutdown_rwsem);
+- was_shutdown = chip->shutdown;
+- chip->shutdown = 1;
+- up_write(&chip->shutdown_rwsem);
+
+ mutex_lock(®ister_mutex);
+- if (!was_shutdown) {
++ if (atomic_inc_return(&chip->shutdown) == 1) {
+ struct snd_usb_stream *as;
+ struct snd_usb_endpoint *ep;
+ struct usb_mixer_interface *mixer;
+
++ /* wait until all pending tasks done;
++ * they are protected by snd_usb_lock_shutdown()
++ */
++ wait_event(chip->shutdown_wait,
++ !atomic_read(&chip->usage_count));
+ snd_card_disconnect(card);
+ /* release the pcm resources */
+ list_for_each_entry(as, &chip->pcm_list, list) {
+@@ -631,28 +633,56 @@ static void usb_audio_disconnect(struct usb_interface *intf)
+ }
+ }
+
+-#ifdef CONFIG_PM
+-
+-int snd_usb_autoresume(struct snd_usb_audio *chip)
++/* lock the shutdown (disconnect) task and autoresume */
++int snd_usb_lock_shutdown(struct snd_usb_audio *chip)
+ {
+- int err = -ENODEV;
++ int err;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->probing || chip->in_pm)
+- err = 0;
+- else if (!chip->shutdown)
+- err = usb_autopm_get_interface(chip->pm_intf);
+- up_read(&chip->shutdown_rwsem);
++ atomic_inc(&chip->usage_count);
++ if (atomic_read(&chip->shutdown)) {
++ err = -EIO;
++ goto error;
++ }
++ err = snd_usb_autoresume(chip);
++ if (err < 0)
++ goto error;
++ return 0;
+
++ error:
++ if (atomic_dec_and_test(&chip->usage_count))
++ wake_up(&chip->shutdown_wait);
+ return err;
+ }
+
++/* autosuspend and unlock the shutdown */
++void snd_usb_unlock_shutdown(struct snd_usb_audio *chip)
++{
++ snd_usb_autosuspend(chip);
++ if (atomic_dec_and_test(&chip->usage_count))
++ wake_up(&chip->shutdown_wait);
++}
++
++#ifdef CONFIG_PM
++
++int snd_usb_autoresume(struct snd_usb_audio *chip)
++{
++ if (atomic_read(&chip->shutdown))
++ return -EIO;
++ if (chip->probing)
++ return 0;
++ if (atomic_inc_return(&chip->active) == 1)
++ return usb_autopm_get_interface(chip->pm_intf);
++ return 0;
++}
++
+ void snd_usb_autosuspend(struct snd_usb_audio *chip)
+ {
+- down_read(&chip->shutdown_rwsem);
+- if (!chip->shutdown && !chip->probing && !chip->in_pm)
++ if (chip->probing)
++ return;
++ if (atomic_read(&chip->shutdown))
++ return;
++ if (atomic_dec_and_test(&chip->active))
+ usb_autopm_put_interface(chip->pm_intf);
+- up_read(&chip->shutdown_rwsem);
+ }
+
+ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
+@@ -705,7 +735,7 @@ static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume)
+ if (--chip->num_suspended_intf)
+ return 0;
+
+- chip->in_pm = 1;
++ atomic_inc(&chip->active); /* avoid autopm */
+ /*
+ * ALSA leaves material resumption to user space
+ * we just notify and restart the mixers
+@@ -725,7 +755,7 @@ static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume)
+ chip->autosuspended = 0;
+
+ err_out:
+- chip->in_pm = 0;
++ atomic_dec(&chip->active); /* allow autopm after this point */
+ return err;
+ }
+
+diff --git a/sound/usb/clock.c b/sound/usb/clock.c
+index 2ed260b10f6d..7ccbcaf6a147 100644
+--- a/sound/usb/clock.c
++++ b/sound/usb/clock.c
+@@ -285,6 +285,8 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
+ unsigned char data[3];
+ int err, crate;
+
++ if (get_iface_desc(alts)->bNumEndpoints < 1)
++ return -EINVAL;
+ ep = get_endpoint(alts, 0)->bEndpointAddress;
+
+ /* if endpoint doesn't have sampling rate control, bail out */
+diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
+index 03b074419964..c2131b851602 100644
+--- a/sound/usb/endpoint.c
++++ b/sound/usb/endpoint.c
+@@ -355,8 +355,10 @@ static void snd_complete_urb(struct urb *urb)
+ if (unlikely(urb->status == -ENOENT || /* unlinked */
+ urb->status == -ENODEV || /* device removed */
+ urb->status == -ECONNRESET || /* unlinked */
+- urb->status == -ESHUTDOWN || /* device disabled */
+- ep->chip->shutdown)) /* device disconnected */
++ urb->status == -ESHUTDOWN)) /* device disabled */
++ goto exit_clear;
++ /* device disconnected */
++ if (unlikely(atomic_read(&ep->chip->shutdown)))
+ goto exit_clear;
+
+ if (usb_pipeout(ep->pipe)) {
+@@ -413,6 +415,9 @@ exit_clear:
+ *
+ * New endpoints will be added to chip->ep_list and must be freed by
+ * calling snd_usb_endpoint_free().
++ *
++ * For SND_USB_ENDPOINT_TYPE_SYNC, the caller needs to guarantee that
++ * bNumEndpoints > 1 beforehand.
+ */
+ struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip,
+ struct usb_host_interface *alts,
+@@ -529,7 +534,7 @@ static int deactivate_urbs(struct snd_usb_endpoint *ep, bool force)
+ {
+ unsigned int i;
+
+- if (!force && ep->chip->shutdown) /* to be sure... */
++ if (!force && atomic_read(&ep->chip->shutdown)) /* to be sure... */
+ return -EBADFD;
+
+ clear_bit(EP_FLAG_RUNNING, &ep->flags);
+@@ -868,7 +873,7 @@ int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, bool can_sleep)
+ int err;
+ unsigned int i;
+
+- if (ep->chip->shutdown)
++ if (atomic_read(&ep->chip->shutdown))
+ return -EBADFD;
+
+ /* already running? */
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index f9a9752d4dbc..e0fc02763024 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -282,6 +282,21 @@ static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
+ return val;
+ }
+
++static int uac2_ctl_value_size(int val_type)
++{
++ switch (val_type) {
++ case USB_MIXER_S32:
++ case USB_MIXER_U32:
++ return 4;
++ case USB_MIXER_S16:
++ case USB_MIXER_U16:
++ return 2;
++ default:
++ return 1;
++ }
++ return 0; /* unreachable */
++}
++
+
+ /*
+ * retrieve a mixer value
+@@ -296,14 +311,11 @@ static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request,
+ int timeout = 10;
+ int idx = 0, err;
+
+- err = snd_usb_autoresume(chip);
++ err = snd_usb_lock_shutdown(chip);
+ if (err < 0)
+ return -EIO;
+
+- down_read(&chip->shutdown_rwsem);
+ while (timeout-- > 0) {
+- if (chip->shutdown)
+- break;
+ idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8);
+ if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request,
+ USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+@@ -319,8 +331,7 @@ static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request,
+ err = -EINVAL;
+
+ out:
+- up_read(&chip->shutdown_rwsem);
+- snd_usb_autosuspend(chip);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -328,14 +339,14 @@ static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request,
+ int validx, int *value_ret)
+ {
+ struct snd_usb_audio *chip = cval->head.mixer->chip;
+- unsigned char buf[2 + 3 * sizeof(__u16)]; /* enough space for one range */
++ unsigned char buf[4 + 3 * sizeof(__u32)]; /* enough space for one range */
+ unsigned char *val;
+ int idx = 0, ret, size;
+ __u8 bRequest;
+
+ if (request == UAC_GET_CUR) {
+ bRequest = UAC2_CS_CUR;
+- size = sizeof(__u16);
++ size = uac2_ctl_value_size(cval->val_type);
+ } else {
+ bRequest = UAC2_CS_RANGE;
+ size = sizeof(buf);
+@@ -343,21 +354,15 @@ static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request,
+
+ memset(buf, 0, sizeof(buf));
+
+- ret = snd_usb_autoresume(chip) ? -EIO : 0;
++ ret = snd_usb_lock_shutdown(chip) ? -EIO : 0;
+ if (ret)
+ goto error;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown) {
+- ret = -ENODEV;
+- } else {
+- idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8);
+- ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest,
++ idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8);
++ ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest,
+ USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ validx, idx, buf, size);
+- }
+- up_read(&chip->shutdown_rwsem);
+- snd_usb_autosuspend(chip);
++ snd_usb_unlock_shutdown(chip);
+
+ if (ret < 0) {
+ error:
+@@ -446,7 +451,7 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
+ int request, int validx, int value_set)
+ {
+ struct snd_usb_audio *chip = cval->head.mixer->chip;
+- unsigned char buf[2];
++ unsigned char buf[4];
+ int idx = 0, val_len, err, timeout = 10;
+
+ validx += cval->idx_off;
+@@ -454,8 +459,7 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
+ if (cval->head.mixer->protocol == UAC_VERSION_1) {
+ val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
+ } else { /* UAC_VERSION_2 */
+- /* audio class v2 controls are always 2 bytes in size */
+- val_len = sizeof(__u16);
++ val_len = uac2_ctl_value_size(cval->val_type);
+
+ /* FIXME */
+ if (request != UAC_SET_CUR) {
+@@ -469,13 +473,14 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
+ value_set = convert_bytes_value(cval, value_set);
+ buf[0] = value_set & 0xff;
+ buf[1] = (value_set >> 8) & 0xff;
+- err = snd_usb_autoresume(chip);
++ buf[2] = (value_set >> 16) & 0xff;
++ buf[3] = (value_set >> 24) & 0xff;
++
++ err = snd_usb_lock_shutdown(chip);
+ if (err < 0)
+ return -EIO;
+- down_read(&chip->shutdown_rwsem);
++
+ while (timeout-- > 0) {
+- if (chip->shutdown)
+- break;
+ idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8);
+ if (snd_usb_ctl_msg(chip->dev,
+ usb_sndctrlpipe(chip->dev, 0), request,
+@@ -490,8 +495,7 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
+ err = -EINVAL;
+
+ out:
+- up_read(&chip->shutdown_rwsem);
+- snd_usb_autosuspend(chip);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -798,24 +802,25 @@ static int check_input_term(struct mixer_build *state, int id,
+ /* feature unit control information */
+ struct usb_feature_control_info {
+ const char *name;
+- unsigned int type; /* control type (mute, volume, etc.) */
++ int type; /* data type for uac1 */
++ int type_uac2; /* data type for uac2 if different from uac1, else -1 */
+ };
+
+ static struct usb_feature_control_info audio_feature_info[] = {
+- { "Mute", USB_MIXER_INV_BOOLEAN },
+- { "Volume", USB_MIXER_S16 },
+- { "Tone Control - Bass", USB_MIXER_S8 },
+- { "Tone Control - Mid", USB_MIXER_S8 },
+- { "Tone Control - Treble", USB_MIXER_S8 },
+- { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
+- { "Auto Gain Control", USB_MIXER_BOOLEAN },
+- { "Delay Control", USB_MIXER_U16 },
+- { "Bass Boost", USB_MIXER_BOOLEAN },
+- { "Loudness", USB_MIXER_BOOLEAN },
++ { "Mute", USB_MIXER_INV_BOOLEAN, -1 },
++ { "Volume", USB_MIXER_S16, -1 },
++ { "Tone Control - Bass", USB_MIXER_S8, -1 },
++ { "Tone Control - Mid", USB_MIXER_S8, -1 },
++ { "Tone Control - Treble", USB_MIXER_S8, -1 },
++ { "Graphic Equalizer", USB_MIXER_S8, -1 }, /* FIXME: not implemeted yet */
++ { "Auto Gain Control", USB_MIXER_BOOLEAN, -1 },
++ { "Delay Control", USB_MIXER_U16, USB_MIXER_U32 },
++ { "Bass Boost", USB_MIXER_BOOLEAN, -1 },
++ { "Loudness", USB_MIXER_BOOLEAN, -1 },
+ /* UAC2 specific */
+- { "Input Gain Control", USB_MIXER_U16 },
+- { "Input Gain Pad Control", USB_MIXER_BOOLEAN },
+- { "Phase Inverter Control", USB_MIXER_BOOLEAN },
++ { "Input Gain Control", USB_MIXER_S16, -1 },
++ { "Input Gain Pad Control", USB_MIXER_S16, -1 },
++ { "Phase Inverter Control", USB_MIXER_BOOLEAN, -1 },
+ };
+
+ /* private_free callback */
+@@ -1215,6 +1220,7 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
+ int readonly_mask)
+ {
+ struct uac_feature_unit_descriptor *desc = raw_desc;
++ struct usb_feature_control_info *ctl_info;
+ unsigned int len = 0;
+ int mapped_name = 0;
+ int nameid = uac_feature_unit_iFeature(desc);
+@@ -1240,7 +1246,13 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
+ snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid);
+ cval->control = control;
+ cval->cmask = ctl_mask;
+- cval->val_type = audio_feature_info[control-1].type;
++ ctl_info = &audio_feature_info[control-1];
++ if (state->mixer->protocol == UAC_VERSION_1)
++ cval->val_type = ctl_info->type;
++ else /* UAC_VERSION_2 */
++ cval->val_type = ctl_info->type_uac2 >= 0 ?
++ ctl_info->type_uac2 : ctl_info->type;
++
+ if (ctl_mask == 0) {
+ cval->channels = 1; /* master channel */
+ cval->master_readonly = readonly_mask;
+diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h
+index d3268f0ee2b3..3417ef347e40 100644
+--- a/sound/usb/mixer.h
++++ b/sound/usb/mixer.h
+@@ -33,6 +33,8 @@ enum {
+ USB_MIXER_U8,
+ USB_MIXER_S16,
+ USB_MIXER_U16,
++ USB_MIXER_S32,
++ USB_MIXER_U32,
+ };
+
+ typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer,
+diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
+index db9547d04f38..940442848fc8 100644
+--- a/sound/usb/mixer_quirks.c
++++ b/sound/usb/mixer_quirks.c
+@@ -309,11 +309,10 @@ static int snd_audigy2nx_led_update(struct usb_mixer_interface *mixer,
+ struct snd_usb_audio *chip = mixer->chip;
+ int err;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown) {
+- err = -ENODEV;
+- goto out;
+- }
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
++
+ if (chip->usb_id == USB_ID(0x041e, 0x3042))
+ err = snd_usb_ctl_msg(chip->dev,
+ usb_sndctrlpipe(chip->dev, 0), 0x24,
+@@ -330,8 +329,7 @@ static int snd_audigy2nx_led_update(struct usb_mixer_interface *mixer,
+ usb_sndctrlpipe(chip->dev, 0), 0x24,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ value, index + 2, NULL, 0);
+- out:
+- up_read(&chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -442,16 +440,15 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
+
+ for (i = 0; jacks[i].name; ++i) {
+ snd_iprintf(buffer, "%s: ", jacks[i].name);
+- down_read(&mixer->chip->shutdown_rwsem);
+- if (mixer->chip->shutdown)
+- err = 0;
+- else
+- err = snd_usb_ctl_msg(mixer->chip->dev,
++ err = snd_usb_lock_shutdown(mixer->chip);
++ if (err < 0)
++ return;
++ err = snd_usb_ctl_msg(mixer->chip->dev,
+ usb_rcvctrlpipe(mixer->chip->dev, 0),
+ UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
+ USB_RECIP_INTERFACE, 0,
+ jacks[i].unitid << 8, buf, 3);
+- up_read(&mixer->chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(mixer->chip);
+ if (err == 3 && (buf[0] == 3 || buf[0] == 6))
+ snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
+ else
+@@ -482,11 +479,9 @@ static int snd_emu0204_ch_switch_update(struct usb_mixer_interface *mixer,
+ int err;
+ unsigned char buf[2];
+
+- down_read(&chip->shutdown_rwsem);
+- if (mixer->chip->shutdown) {
+- err = -ENODEV;
+- goto out;
+- }
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
+
+ buf[0] = 0x01;
+ buf[1] = value ? 0x02 : 0x01;
+@@ -494,8 +489,7 @@ static int snd_emu0204_ch_switch_update(struct usb_mixer_interface *mixer,
+ usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
+ USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ 0x0400, 0x0e00, buf, 2);
+- out:
+- up_read(&chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -555,15 +549,14 @@ static int snd_xonar_u1_switch_update(struct usb_mixer_interface *mixer,
+ struct snd_usb_audio *chip = mixer->chip;
+ int err;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown)
+- err = -ENODEV;
+- else
+- err = snd_usb_ctl_msg(chip->dev,
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
++ err = snd_usb_ctl_msg(chip->dev,
+ usb_sndctrlpipe(chip->dev, 0), 0x08,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ 50, 0, &status, 1);
+- up_read(&chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -624,11 +617,9 @@ static int snd_mbox1_switch_update(struct usb_mixer_interface *mixer, int val)
+ int err;
+ unsigned char buff[3];
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown) {
+- err = -ENODEV;
+- goto err;
+- }
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
+
+ /* Prepare for magic command to toggle clock source */
+ err = snd_usb_ctl_msg(chip->dev,
+@@ -684,7 +675,7 @@ static int snd_mbox1_switch_update(struct usb_mixer_interface *mixer, int val)
+ goto err;
+
+ err:
+- up_read(&chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -779,15 +770,14 @@ static int snd_ni_update_cur_val(struct usb_mixer_elem_list *list)
+ unsigned int pval = list->kctl->private_value;
+ int err;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown)
+- err = -ENODEV;
+- else
+- err = usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
+- (pval >> 16) & 0xff,
+- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+- pval >> 24, pval & 0xffff, NULL, 0, 1000);
+- up_read(&chip->shutdown_rwsem);
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
++ err = usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
++ (pval >> 16) & 0xff,
++ USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
++ pval >> 24, pval & 0xffff, NULL, 0, 1000);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -945,18 +935,17 @@ static int snd_ftu_eff_switch_update(struct usb_mixer_elem_list *list)
+ value[0] = pval >> 24;
+ value[1] = 0;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown)
+- err = -ENODEV;
+- else
+- err = snd_usb_ctl_msg(chip->dev,
+- usb_sndctrlpipe(chip->dev, 0),
+- UAC_SET_CUR,
+- USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+- pval & 0xff00,
+- snd_usb_ctrl_intf(chip) | ((pval & 0xff) << 8),
+- value, 2);
+- up_read(&chip->shutdown_rwsem);
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
++ err = snd_usb_ctl_msg(chip->dev,
++ usb_sndctrlpipe(chip->dev, 0),
++ UAC_SET_CUR,
++ USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
++ pval & 0xff00,
++ snd_usb_ctrl_intf(chip) | ((pval & 0xff) << 8),
++ value, 2);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -1520,11 +1509,9 @@ static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
+ unsigned char data[3];
+ int rate;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown) {
+- err = -ENODEV;
+- goto end;
+- }
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
+
+ ucontrol->value.iec958.status[0] = kcontrol->private_value & 0xff;
+ ucontrol->value.iec958.status[1] = (kcontrol->private_value >> 8) & 0xff;
+@@ -1532,7 +1519,11 @@ static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
+
+ /* use known values for that card: interface#1 altsetting#1 */
+ iface = usb_ifnum_to_if(chip->dev, 1);
++ if (!iface || iface->num_altsetting < 2)
++ return -EINVAL;
+ alts = &iface->altsetting[1];
++ if (get_iface_desc(alts)->bNumEndpoints < 1)
++ return -EINVAL;
+ ep = get_endpoint(alts, 0)->bEndpointAddress;
+
+ err = snd_usb_ctl_msg(chip->dev,
+@@ -1552,7 +1543,7 @@ static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
+
+ err = 0;
+ end:
+- up_read(&chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -1563,11 +1554,9 @@ static int snd_microii_spdif_default_update(struct usb_mixer_elem_list *list)
+ u8 reg;
+ int err;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown) {
+- err = -ENODEV;
+- goto end;
+- }
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
+
+ reg = ((pval >> 4) & 0xf0) | (pval & 0x0f);
+ err = snd_usb_ctl_msg(chip->dev,
+@@ -1595,7 +1584,7 @@ static int snd_microii_spdif_default_update(struct usb_mixer_elem_list *list)
+ goto end;
+
+ end:
+- up_read(&chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+@@ -1651,11 +1640,9 @@ static int snd_microii_spdif_switch_update(struct usb_mixer_elem_list *list)
+ u8 reg = list->kctl->private_value;
+ int err;
+
+- down_read(&chip->shutdown_rwsem);
+- if (chip->shutdown) {
+- err = -ENODEV;
+- goto end;
+- }
++ err = snd_usb_lock_shutdown(chip);
++ if (err < 0)
++ return err;
+
+ err = snd_usb_ctl_msg(chip->dev,
+ usb_sndctrlpipe(chip->dev, 0),
+@@ -1666,8 +1653,7 @@ static int snd_microii_spdif_switch_update(struct usb_mixer_elem_list *list)
+ NULL,
+ 0);
+
+- end:
+- up_read(&chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(chip);
+ return err;
+ }
+
+diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
+index b4ef410e5a98..a51155197277 100644
+--- a/sound/usb/pcm.c
++++ b/sound/usb/pcm.c
+@@ -80,7 +80,7 @@ static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream
+ unsigned int hwptr_done;
+
+ subs = (struct snd_usb_substream *)substream->runtime->private_data;
+- if (subs->stream->chip->shutdown)
++ if (atomic_read(&subs->stream->chip->shutdown))
+ return SNDRV_PCM_POS_XRUN;
+ spin_lock(&subs->lock);
+ hwptr_done = subs->hwptr_done;
+@@ -159,6 +159,8 @@ static int init_pitch_v1(struct snd_usb_audio *chip, int iface,
+ unsigned char data[1];
+ int err;
+
++ if (get_iface_desc(alts)->bNumEndpoints < 1)
++ return -EINVAL;
+ ep = get_endpoint(alts, 0)->bEndpointAddress;
+
+ data[0] = 1;
+@@ -707,12 +709,11 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream,
+ return -EINVAL;
+ }
+
+- down_read(&subs->stream->chip->shutdown_rwsem);
+- if (subs->stream->chip->shutdown)
+- ret = -ENODEV;
+- else
+- ret = set_format(subs, fmt);
+- up_read(&subs->stream->chip->shutdown_rwsem);
++ ret = snd_usb_lock_shutdown(subs->stream->chip);
++ if (ret < 0)
++ return ret;
++ ret = set_format(subs, fmt);
++ snd_usb_unlock_shutdown(subs->stream->chip);
+ if (ret < 0)
+ return ret;
+
+@@ -735,13 +736,12 @@ static int snd_usb_hw_free(struct snd_pcm_substream *substream)
+ subs->cur_audiofmt = NULL;
+ subs->cur_rate = 0;
+ subs->period_bytes = 0;
+- down_read(&subs->stream->chip->shutdown_rwsem);
+- if (!subs->stream->chip->shutdown) {
++ if (!snd_usb_lock_shutdown(subs->stream->chip)) {
+ stop_endpoints(subs, true);
+ snd_usb_endpoint_deactivate(subs->sync_endpoint);
+ snd_usb_endpoint_deactivate(subs->data_endpoint);
++ snd_usb_unlock_shutdown(subs->stream->chip);
+ }
+- up_read(&subs->stream->chip->shutdown_rwsem);
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
+ }
+
+@@ -763,11 +763,9 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
+ return -ENXIO;
+ }
+
+- down_read(&subs->stream->chip->shutdown_rwsem);
+- if (subs->stream->chip->shutdown) {
+- ret = -ENODEV;
+- goto unlock;
+- }
++ ret = snd_usb_lock_shutdown(subs->stream->chip);
++ if (ret < 0)
++ return ret;
+ if (snd_BUG_ON(!subs->data_endpoint)) {
+ ret = -EIO;
+ goto unlock;
+@@ -816,7 +814,7 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
+ ret = start_endpoints(subs, true);
+
+ unlock:
+- up_read(&subs->stream->chip->shutdown_rwsem);
++ snd_usb_unlock_shutdown(subs->stream->chip);
+ return ret;
+ }
+
+@@ -1218,9 +1216,11 @@ static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
+
+ stop_endpoints(subs, true);
+
+- if (!as->chip->shutdown && subs->interface >= 0) {
++ if (subs->interface >= 0 &&
++ !snd_usb_lock_shutdown(subs->stream->chip)) {
+ usb_set_interface(subs->dev, subs->interface, 0);
+ subs->interface = -1;
++ snd_usb_unlock_shutdown(subs->stream->chip);
+ }
+
+ subs->pcm_substream = NULL;
+diff --git a/sound/usb/proc.c b/sound/usb/proc.c
+index 5f761ab34c01..0ac89e294d31 100644
+--- a/sound/usb/proc.c
++++ b/sound/usb/proc.c
+@@ -46,14 +46,14 @@ static inline unsigned get_high_speed_hz(unsigned int usb_rate)
+ static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
+ {
+ struct snd_usb_audio *chip = entry->private_data;
+- if (!chip->shutdown)
++ if (!atomic_read(&chip->shutdown))
+ snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
+ }
+
+ static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
+ {
+ struct snd_usb_audio *chip = entry->private_data;
+- if (!chip->shutdown)
++ if (!atomic_read(&chip->shutdown))
+ snd_iprintf(buffer, "%04x:%04x\n",
+ USB_ID_VENDOR(chip->usb_id),
+ USB_ID_PRODUCT(chip->usb_id));
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index a4d03e5da3e0..5fb308d39e2a 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -177,6 +177,12 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
+ }
+ alts = &iface->altsetting[fp->altset_idx];
+ altsd = get_iface_desc(alts);
++ if (altsd->bNumEndpoints < 1) {
++ kfree(fp);
++ kfree(rate_table);
++ return -EINVAL;
++ }
++
+ fp->protocol = altsd->bInterfaceProtocol;
+
+ if (fp->datainterval == 0)
+@@ -1118,6 +1124,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ switch (chip->usb_id) {
+ case USB_ID(0x045E, 0x075D): /* MS Lifecam Cinema */
+ case USB_ID(0x045E, 0x076D): /* MS Lifecam HD-5000 */
++ case USB_ID(0x045E, 0x076E): /* MS Lifecam HD-5001 */
+ case USB_ID(0x045E, 0x076F): /* MS Lifecam HD-6000 */
+ case USB_ID(0x045E, 0x0772): /* MS Lifecam Studio */
+ case USB_ID(0x045E, 0x0779): /* MS Lifecam HD-3000 */
+diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
+index 991aa84491cd..66cba05258af 100644
+--- a/sound/usb/usbaudio.h
++++ b/sound/usb/usbaudio.h
+@@ -37,11 +37,12 @@ struct snd_usb_audio {
+ struct usb_interface *pm_intf;
+ u32 usb_id;
+ struct mutex mutex;
+- struct rw_semaphore shutdown_rwsem;
+- unsigned int shutdown:1;
+ unsigned int probing:1;
+- unsigned int in_pm:1;
+ unsigned int autosuspended:1;
++ atomic_t active;
++ atomic_t shutdown;
++ atomic_t usage_count;
++ wait_queue_head_t shutdown_wait;
+ unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */
+
+ int num_interfaces;
+@@ -116,4 +117,7 @@ struct snd_usb_audio_quirk {
+ #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
+ #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
+
++int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
++void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
++
+ #endif /* __USBAUDIO_H */
+diff --git a/tools/hv/Makefile b/tools/hv/Makefile
+index a8ab79556926..a8c4644022a6 100644
+--- a/tools/hv/Makefile
++++ b/tools/hv/Makefile
+@@ -5,6 +5,8 @@ PTHREAD_LIBS = -lpthread
+ WARNINGS = -Wall -Wextra
+ CFLAGS = $(WARNINGS) -g $(PTHREAD_LIBS) $(shell getconf LFS_CFLAGS)
+
++CFLAGS += -D__EXPORTED_HEADERS__ -I../../include/uapi -I../../include
++
+ all: hv_kvp_daemon hv_vss_daemon hv_fcopy_daemon
+ %: %.c
+ $(CC) $(CFLAGS) -o $@ $^
+diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
+index 48411674da0f..8b02a4355659 100644
+--- a/tools/perf/util/pmu.c
++++ b/tools/perf/util/pmu.c
+@@ -263,13 +263,12 @@ static int pmu_aliases_parse(char *dir, struct list_head *head)
+ {
+ struct dirent *evt_ent;
+ DIR *event_dir;
+- int ret = 0;
+
+ event_dir = opendir(dir);
+ if (!event_dir)
+ return -EINVAL;
+
+- while (!ret && (evt_ent = readdir(event_dir))) {
++ while ((evt_ent = readdir(event_dir))) {
+ char path[PATH_MAX];
+ char *name = evt_ent->d_name;
+ FILE *file;
+@@ -285,17 +284,19 @@ static int pmu_aliases_parse(char *dir, struct list_head *head)
+
+ snprintf(path, PATH_MAX, "%s/%s", dir, name);
+
+- ret = -EINVAL;
+ file = fopen(path, "r");
+- if (!file)
+- break;
++ if (!file) {
++ pr_debug("Cannot open %s\n", path);
++ continue;
++ }
+
+- ret = perf_pmu__new_alias(head, dir, name, file);
++ if (perf_pmu__new_alias(head, dir, name, file) < 0)
++ pr_debug("Cannot set up %s\n", name);
+ fclose(file);
+ }
+
+ closedir(event_dir);
+- return ret;
++ return 0;
+ }
+
+ /*
+diff --git a/tools/testing/selftests/efivarfs/efivarfs.sh b/tools/testing/selftests/efivarfs/efivarfs.sh
+index 77edcdcc016b..057278448515 100755
+--- a/tools/testing/selftests/efivarfs/efivarfs.sh
++++ b/tools/testing/selftests/efivarfs/efivarfs.sh
+@@ -88,7 +88,11 @@ test_delete()
+ exit 1
+ fi
+
+- rm $file
++ rm $file 2>/dev/null
++ if [ $? -ne 0 ]; then
++ chattr -i $file
++ rm $file
++ fi
+
+ if [ -e $file ]; then
+ echo "$file couldn't be deleted" >&2
+@@ -111,6 +115,7 @@ test_zero_size_delete()
+ exit 1
+ fi
+
++ chattr -i $file
+ printf "$attrs" > $file
+
+ if [ -e $file ]; then
+@@ -141,7 +146,11 @@ test_valid_filenames()
+ echo "$file could not be created" >&2
+ ret=1
+ else
+- rm $file
++ rm $file 2>/dev/null
++ if [ $? -ne 0 ]; then
++ chattr -i $file
++ rm $file
++ fi
+ fi
+ done
+
+@@ -174,7 +183,11 @@ test_invalid_filenames()
+
+ if [ -e $file ]; then
+ echo "Creating $file should have failed" >&2
+- rm $file
++ rm $file 2>/dev/null
++ if [ $? -ne 0 ]; then
++ chattr -i $file
++ rm $file
++ fi
+ ret=1
+ fi
+ done
+diff --git a/tools/testing/selftests/efivarfs/open-unlink.c b/tools/testing/selftests/efivarfs/open-unlink.c
+index 8c0764407b3c..4af74f733036 100644
+--- a/tools/testing/selftests/efivarfs/open-unlink.c
++++ b/tools/testing/selftests/efivarfs/open-unlink.c
+@@ -1,10 +1,68 @@
++#include <errno.h>
+ #include <stdio.h>
+ #include <stdint.h>
+ #include <stdlib.h>
+ #include <unistd.h>
++#include <sys/ioctl.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <fcntl.h>
++#include <linux/fs.h>
++
++static int set_immutable(const char *path, int immutable)
++{
++ unsigned int flags;
++ int fd;
++ int rc;
++ int error;
++
++ fd = open(path, O_RDONLY);
++ if (fd < 0)
++ return fd;
++
++ rc = ioctl(fd, FS_IOC_GETFLAGS, &flags);
++ if (rc < 0) {
++ error = errno;
++ close(fd);
++ errno = error;
++ return rc;
++ }
++
++ if (immutable)
++ flags |= FS_IMMUTABLE_FL;
++ else
++ flags &= ~FS_IMMUTABLE_FL;
++
++ rc = ioctl(fd, FS_IOC_SETFLAGS, &flags);
++ error = errno;
++ close(fd);
++ errno = error;
++ return rc;
++}
++
++static int get_immutable(const char *path)
++{
++ unsigned int flags;
++ int fd;
++ int rc;
++ int error;
++
++ fd = open(path, O_RDONLY);
++ if (fd < 0)
++ return fd;
++
++ rc = ioctl(fd, FS_IOC_GETFLAGS, &flags);
++ if (rc < 0) {
++ error = errno;
++ close(fd);
++ errno = error;
++ return rc;
++ }
++ close(fd);
++ if (flags & FS_IMMUTABLE_FL)
++ return 1;
++ return 0;
++}
+
+ int main(int argc, char **argv)
+ {
+@@ -27,7 +85,7 @@ int main(int argc, char **argv)
+ buf[4] = 0;
+
+ /* create a test variable */
+- fd = open(path, O_WRONLY | O_CREAT);
++ fd = open(path, O_WRONLY | O_CREAT, 0600);
+ if (fd < 0) {
+ perror("open(O_WRONLY)");
+ return EXIT_FAILURE;
+@@ -41,6 +99,18 @@ int main(int argc, char **argv)
+
+ close(fd);
+
++ rc = get_immutable(path);
++ if (rc < 0) {
++ perror("ioctl(FS_IOC_GETFLAGS)");
++ return EXIT_FAILURE;
++ } else if (rc) {
++ rc = set_immutable(path, 0);
++ if (rc < 0) {
++ perror("ioctl(FS_IOC_SETFLAGS)");
++ return EXIT_FAILURE;
++ }
++ }
++
+ fd = open(path, O_RDONLY);
+ if (fd < 0) {
+ perror("open");
+diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
+index 85422985235f..c2f87ff0061d 100644
+--- a/virt/kvm/kvm_main.c
++++ b/virt/kvm/kvm_main.c
+@@ -457,6 +457,16 @@ static struct kvm *kvm_create_vm(unsigned long type)
+ if (!kvm)
+ return ERR_PTR(-ENOMEM);
+
++ spin_lock_init(&kvm->mmu_lock);
++ atomic_inc(¤t->mm->mm_count);
++ kvm->mm = current->mm;
++ kvm_eventfd_init(kvm);
++ mutex_init(&kvm->lock);
++ mutex_init(&kvm->irq_lock);
++ mutex_init(&kvm->slots_lock);
++ atomic_set(&kvm->users_count, 1);
++ INIT_LIST_HEAD(&kvm->devices);
++
+ r = kvm_arch_init_vm(kvm, type);
+ if (r)
+ goto out_err_no_disable;
+@@ -494,16 +504,6 @@ static struct kvm *kvm_create_vm(unsigned long type)
+ goto out_err;
+ }
+
+- spin_lock_init(&kvm->mmu_lock);
+- kvm->mm = current->mm;
+- atomic_inc(&kvm->mm->mm_count);
+- kvm_eventfd_init(kvm);
+- mutex_init(&kvm->lock);
+- mutex_init(&kvm->irq_lock);
+- mutex_init(&kvm->slots_lock);
+- atomic_set(&kvm->users_count, 1);
+- INIT_LIST_HEAD(&kvm->devices);
+-
+ r = kvm_init_mmu_notifier(kvm);
+ if (r)
+ goto out_err;
+@@ -525,6 +525,7 @@ out_err_no_disable:
+ kfree(kvm->buses[i]);
+ kvfree(kvm->memslots);
+ kvm_arch_free_vm(kvm);
++ mmdrop(current->mm);
+ return ERR_PTR(r);
+ }
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-04-06 11:23 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-04-06 11:23 UTC (permalink / raw
To: gentoo-commits
commit: 1ebec2302e4819c5bb8ef97bafc6f513f794a23c
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Apr 6 11:23:42 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Apr 6 11:23:42 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=1ebec230
Linux patch 4.1.21
0000_README | 4 +
1020_linux-4.1.21.patch | 2005 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2009 insertions(+)
diff --git a/0000_README b/0000_README
index 3e19785..cb424ff 100644
--- a/0000_README
+++ b/0000_README
@@ -123,6 +123,10 @@ Patch: 1019_linux-4.1.20.patch
From: http://www.kernel.org
Desc: Linux 4.1.20
+Patch: 1020_linux-4.1.21.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.21
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1020_linux-4.1.21.patch b/1020_linux-4.1.21.patch
new file mode 100644
index 0000000..54f0496
--- /dev/null
+++ b/1020_linux-4.1.21.patch
@@ -0,0 +1,2005 @@
+diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt
+index 4f6a82cef1d1..cbe35b3de9e9 100644
+--- a/Documentation/devicetree/bindings/arm/omap/omap.txt
++++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
+@@ -23,6 +23,7 @@ Optional properties:
+ during suspend.
+ - ti,no-reset-on-init: When present, the module should not be reset at init
+ - ti,no-idle-on-init: When present, the module should not be idled at init
++- ti,no-idle: When present, the module is never allowed to idle.
+
+ Example:
+
+diff --git a/Documentation/virtual/kvm/mmu.txt b/Documentation/virtual/kvm/mmu.txt
+index c59bd9bc41ef..4176ab076f1c 100644
+--- a/Documentation/virtual/kvm/mmu.txt
++++ b/Documentation/virtual/kvm/mmu.txt
+@@ -352,7 +352,8 @@ In the first case there are two additional complications:
+ - if CR4.SMEP is enabled: since we've turned the page into a kernel page,
+ the kernel may now execute it. We handle this by also setting spte.nx.
+ If we get a user fetch or read fault, we'll change spte.u=1 and
+- spte.nx=gpte.nx back.
++ spte.nx=gpte.nx back. For this to work, KVM forces EFER.NX to 1 when
++ shadow paging is in use.
+ - if CR4.SMAP is disabled: since the page has been changed to a kernel
+ page, it can not be reused when CR4.SMAP is enabled. We set
+ CR4.SMAP && !CR0.WP into shadow page's role to avoid this case. Note,
+diff --git a/Makefile b/Makefile
+index 39be1bbd373a..79fab0d55218 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 20
++SUBLEVEL = 21
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
+index dfcc0dd637e5..bc04b754fe36 100644
+--- a/arch/arm/boot/dts/dra7.dtsi
++++ b/arch/arm/boot/dts/dra7.dtsi
+@@ -1411,6 +1411,16 @@
+ 0x48485200 0x2E00>;
+ #address-cells = <1>;
+ #size-cells = <1>;
++
++ /*
++ * Do not allow gating of cpsw clock as workaround
++ * for errata i877. Keeping internal clock disabled
++ * causes the device switching characteristics
++ * to degrade over time and eventually fail to meet
++ * the data manual delay time/skew specs.
++ */
++ ti,no-idle;
++
+ /*
+ * rx_thresh_pend
+ * rx_pend
+diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
+index 5286e7773ed4..9185bb958503 100644
+--- a/arch/arm/mach-omap2/omap_hwmod.c
++++ b/arch/arm/mach-omap2/omap_hwmod.c
+@@ -876,6 +876,36 @@ static int _init_opt_clks(struct omap_hwmod *oh)
+ return ret;
+ }
+
++static void _enable_optional_clocks(struct omap_hwmod *oh)
++{
++ struct omap_hwmod_opt_clk *oc;
++ int i;
++
++ pr_debug("omap_hwmod: %s: enabling optional clocks\n", oh->name);
++
++ for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++)
++ if (oc->_clk) {
++ pr_debug("omap_hwmod: enable %s:%s\n", oc->role,
++ __clk_get_name(oc->_clk));
++ clk_enable(oc->_clk);
++ }
++}
++
++static void _disable_optional_clocks(struct omap_hwmod *oh)
++{
++ struct omap_hwmod_opt_clk *oc;
++ int i;
++
++ pr_debug("omap_hwmod: %s: disabling optional clocks\n", oh->name);
++
++ for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++)
++ if (oc->_clk) {
++ pr_debug("omap_hwmod: disable %s:%s\n", oc->role,
++ __clk_get_name(oc->_clk));
++ clk_disable(oc->_clk);
++ }
++}
++
+ /**
+ * _enable_clocks - enable hwmod main clock and interface clocks
+ * @oh: struct omap_hwmod *
+@@ -903,6 +933,9 @@ static int _enable_clocks(struct omap_hwmod *oh)
+ clk_enable(os->_clk);
+ }
+
++ if (oh->flags & HWMOD_OPT_CLKS_NEEDED)
++ _enable_optional_clocks(oh);
++
+ /* The opt clocks are controlled by the device driver. */
+
+ return 0;
+@@ -934,41 +967,14 @@ static int _disable_clocks(struct omap_hwmod *oh)
+ clk_disable(os->_clk);
+ }
+
++ if (oh->flags & HWMOD_OPT_CLKS_NEEDED)
++ _disable_optional_clocks(oh);
++
+ /* The opt clocks are controlled by the device driver. */
+
+ return 0;
+ }
+
+-static void _enable_optional_clocks(struct omap_hwmod *oh)
+-{
+- struct omap_hwmod_opt_clk *oc;
+- int i;
+-
+- pr_debug("omap_hwmod: %s: enabling optional clocks\n", oh->name);
+-
+- for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++)
+- if (oc->_clk) {
+- pr_debug("omap_hwmod: enable %s:%s\n", oc->role,
+- __clk_get_name(oc->_clk));
+- clk_enable(oc->_clk);
+- }
+-}
+-
+-static void _disable_optional_clocks(struct omap_hwmod *oh)
+-{
+- struct omap_hwmod_opt_clk *oc;
+- int i;
+-
+- pr_debug("omap_hwmod: %s: disabling optional clocks\n", oh->name);
+-
+- for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++)
+- if (oc->_clk) {
+- pr_debug("omap_hwmod: disable %s:%s\n", oc->role,
+- __clk_get_name(oc->_clk));
+- clk_disable(oc->_clk);
+- }
+-}
+-
+ /**
+ * _omap4_enable_module - enable CLKCTRL modulemode on OMAP4
+ * @oh: struct omap_hwmod *
+@@ -2180,6 +2186,11 @@ static int _enable(struct omap_hwmod *oh)
+ */
+ static int _idle(struct omap_hwmod *oh)
+ {
++ if (oh->flags & HWMOD_NO_IDLE) {
++ oh->_int_flags |= _HWMOD_SKIP_ENABLE;
++ return 0;
++ }
++
+ pr_debug("omap_hwmod: %s: idling\n", oh->name);
+
+ if (oh->_state != _HWMOD_STATE_ENABLED) {
+@@ -2484,6 +2495,8 @@ static int __init _init(struct omap_hwmod *oh, void *data)
+ oh->flags |= HWMOD_INIT_NO_RESET;
+ if (of_find_property(np, "ti,no-idle-on-init", NULL))
+ oh->flags |= HWMOD_INIT_NO_IDLE;
++ if (of_find_property(np, "ti,no-idle", NULL))
++ oh->flags |= HWMOD_NO_IDLE;
+ }
+
+ oh->_state = _HWMOD_STATE_INITIALIZED;
+@@ -2610,7 +2623,7 @@ static void __init _setup_postsetup(struct omap_hwmod *oh)
+ * XXX HWMOD_INIT_NO_IDLE does not belong in hwmod data -
+ * it should be set by the core code as a runtime flag during startup
+ */
+- if ((oh->flags & HWMOD_INIT_NO_IDLE) &&
++ if ((oh->flags & (HWMOD_INIT_NO_IDLE | HWMOD_NO_IDLE)) &&
+ (postsetup_state == _HWMOD_STATE_IDLE)) {
+ oh->_int_flags |= _HWMOD_SKIP_ENABLE;
+ postsetup_state = _HWMOD_STATE_ENABLED;
+diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h
+index 9611c91d9b82..ec289c5f099a 100644
+--- a/arch/arm/mach-omap2/omap_hwmod.h
++++ b/arch/arm/mach-omap2/omap_hwmod.h
+@@ -517,6 +517,10 @@ struct omap_hwmod_omap4_prcm {
+ * HWMOD_RECONFIG_IO_CHAIN: omap_hwmod code needs to reconfigure wake-up
+ * events by calling _reconfigure_io_chain() when a device is enabled
+ * or idled.
++ * HWMOD_OPT_CLKS_NEEDED: The optional clocks are needed for the module to
++ * operate and they need to be handled at the same time as the main_clk.
++ * HWMOD_NO_IDLE: Do not idle the hwmod at all. Useful to handle certain
++ * IPs like CPSW on DRA7, where clocks to this module cannot be disabled.
+ */
+ #define HWMOD_SWSUP_SIDLE (1 << 0)
+ #define HWMOD_SWSUP_MSTANDBY (1 << 1)
+@@ -532,6 +536,8 @@ struct omap_hwmod_omap4_prcm {
+ #define HWMOD_FORCE_MSTANDBY (1 << 11)
+ #define HWMOD_SWSUP_SIDLE_ACT (1 << 12)
+ #define HWMOD_RECONFIG_IO_CHAIN (1 << 13)
++#define HWMOD_OPT_CLKS_NEEDED (1 << 14)
++#define HWMOD_NO_IDLE (1 << 15)
+
+ /*
+ * omap_hwmod._int_flags definitions
+diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c
+index b056369fd47d..0d1d675f2cce 100644
+--- a/arch/arm64/kernel/debug-monitors.c
++++ b/arch/arm64/kernel/debug-monitors.c
+@@ -184,20 +184,21 @@ static void clear_regs_spsr_ss(struct pt_regs *regs)
+
+ /* EL1 Single Step Handler hooks */
+ static LIST_HEAD(step_hook);
+-static DEFINE_RWLOCK(step_hook_lock);
++static DEFINE_SPINLOCK(step_hook_lock);
+
+ void register_step_hook(struct step_hook *hook)
+ {
+- write_lock(&step_hook_lock);
+- list_add(&hook->node, &step_hook);
+- write_unlock(&step_hook_lock);
++ spin_lock(&step_hook_lock);
++ list_add_rcu(&hook->node, &step_hook);
++ spin_unlock(&step_hook_lock);
+ }
+
+ void unregister_step_hook(struct step_hook *hook)
+ {
+- write_lock(&step_hook_lock);
+- list_del(&hook->node);
+- write_unlock(&step_hook_lock);
++ spin_lock(&step_hook_lock);
++ list_del_rcu(&hook->node);
++ spin_unlock(&step_hook_lock);
++ synchronize_rcu();
+ }
+
+ /*
+@@ -211,15 +212,15 @@ static int call_step_hook(struct pt_regs *regs, unsigned int esr)
+ struct step_hook *hook;
+ int retval = DBG_HOOK_ERROR;
+
+- read_lock(&step_hook_lock);
++ rcu_read_lock();
+
+- list_for_each_entry(hook, &step_hook, node) {
++ list_for_each_entry_rcu(hook, &step_hook, node) {
+ retval = hook->fn(regs, esr);
+ if (retval == DBG_HOOK_HANDLED)
+ break;
+ }
+
+- read_unlock(&step_hook_lock);
++ rcu_read_unlock();
+
+ return retval;
+ }
+@@ -271,20 +272,21 @@ static int single_step_handler(unsigned long addr, unsigned int esr,
+ * Use reader/writer locks instead of plain spinlock.
+ */
+ static LIST_HEAD(break_hook);
+-static DEFINE_RWLOCK(break_hook_lock);
++static DEFINE_SPINLOCK(break_hook_lock);
+
+ void register_break_hook(struct break_hook *hook)
+ {
+- write_lock(&break_hook_lock);
+- list_add(&hook->node, &break_hook);
+- write_unlock(&break_hook_lock);
++ spin_lock(&break_hook_lock);
++ list_add_rcu(&hook->node, &break_hook);
++ spin_unlock(&break_hook_lock);
+ }
+
+ void unregister_break_hook(struct break_hook *hook)
+ {
+- write_lock(&break_hook_lock);
+- list_del(&hook->node);
+- write_unlock(&break_hook_lock);
++ spin_lock(&break_hook_lock);
++ list_del_rcu(&hook->node);
++ spin_unlock(&break_hook_lock);
++ synchronize_rcu();
+ }
+
+ static int call_break_hook(struct pt_regs *regs, unsigned int esr)
+@@ -292,11 +294,11 @@ static int call_break_hook(struct pt_regs *regs, unsigned int esr)
+ struct break_hook *hook;
+ int (*fn)(struct pt_regs *regs, unsigned int esr) = NULL;
+
+- read_lock(&break_hook_lock);
+- list_for_each_entry(hook, &break_hook, node)
++ rcu_read_lock();
++ list_for_each_entry_rcu(hook, &break_hook, node)
+ if ((esr & hook->esr_mask) == hook->esr_val)
+ fn = hook->fn;
+- read_unlock(&break_hook_lock);
++ rcu_read_unlock();
+
+ return fn ? fn(regs, esr) : DBG_HOOK_ERROR;
+ }
+diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
+index a3b1ffe50aa0..c99e8a32bea4 100644
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -2103,11 +2103,11 @@ config CPU_R4K_CACHE_TLB
+
+ config MIPS_MT_SMP
+ bool "MIPS MT SMP support (1 TC on each available VPE)"
+- depends on SYS_SUPPORTS_MULTITHREADING
++ depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
+ select CPU_MIPSR2_IRQ_VI
+ select CPU_MIPSR2_IRQ_EI
+ select SYNC_R4K
+- select MIPS_GIC_IPI
++ select MIPS_GIC_IPI if MIPS_GIC
+ select MIPS_MT
+ select SMP
+ select SMP_UP
+@@ -2204,8 +2204,8 @@ config MIPS_VPE_APSP_API_MT
+
+ config MIPS_CMP
+ bool "MIPS CMP framework support (DEPRECATED)"
+- depends on SYS_SUPPORTS_MIPS_CMP
+- select MIPS_GIC_IPI
++ depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
++ select MIPS_GIC_IPI if MIPS_GIC
+ select SMP
+ select SYNC_R4K
+ select SYS_SUPPORTS_SMP
+@@ -2221,11 +2221,11 @@ config MIPS_CMP
+
+ config MIPS_CPS
+ bool "MIPS Coherent Processing System support"
+- depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
++ depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
+ select MIPS_CM
+ select MIPS_CPC
+ select MIPS_CPS_PM if HOTPLUG_CPU
+- select MIPS_GIC_IPI
++ select MIPS_GIC_IPI if MIPS_GIC
+ select SMP
+ select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
+ select SYS_SUPPORTS_HOTPLUG_CPU
+@@ -2244,6 +2244,7 @@ config MIPS_CPS_PM
+ bool
+
+ config MIPS_GIC_IPI
++ depends on MIPS_GIC
+ bool
+
+ config MIPS_CM
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index f8338e6d3dd7..a34e43eec658 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -1273,6 +1273,20 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
+ std r6, VCPU_ACOP(r9)
+ stw r7, VCPU_GUEST_PID(r9)
+ std r8, VCPU_WORT(r9)
++ /*
++ * Restore various registers to 0, where non-zero values
++ * set by the guest could disrupt the host.
++ */
++ li r0, 0
++ mtspr SPRN_IAMR, r0
++ mtspr SPRN_CIABR, r0
++ mtspr SPRN_DAWRX, r0
++ mtspr SPRN_TCSCR, r0
++ mtspr SPRN_WORT, r0
++ /* Set MMCRS to 1<<31 to freeze and disable the SPMC counters */
++ li r0, 1
++ sldi r0, r0, 31
++ mtspr SPRN_MMCRS, r0
+ 8:
+
+ /* Save and reset AMR and UAMOR before turning on the MMU */
+diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
+index fb1b93ea3e3f..e485817f7b1a 100644
+--- a/arch/s390/include/asm/mmu_context.h
++++ b/arch/s390/include/asm/mmu_context.h
+@@ -15,17 +15,25 @@
+ static inline int init_new_context(struct task_struct *tsk,
+ struct mm_struct *mm)
+ {
++ spin_lock_init(&mm->context.list_lock);
++ INIT_LIST_HEAD(&mm->context.pgtable_list);
++ INIT_LIST_HEAD(&mm->context.gmap_list);
+ cpumask_clear(&mm->context.cpu_attach_mask);
+ atomic_set(&mm->context.attach_count, 0);
+ mm->context.flush_mm = 0;
+- mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS;
+- mm->context.asce_bits |= _ASCE_TYPE_REGION3;
+ #ifdef CONFIG_PGSTE
+ mm->context.alloc_pgste = page_table_allocate_pgste;
+ mm->context.has_pgste = 0;
+ mm->context.use_skey = 0;
+ #endif
+- mm->context.asce_limit = STACK_TOP_MAX;
++ if (mm->context.asce_limit == 0) {
++ /* context created by exec, set asce limit to 4TB */
++ mm->context.asce_bits = _ASCE_TABLE_LENGTH |
++ _ASCE_USER_BITS | _ASCE_TYPE_REGION3;
++ mm->context.asce_limit = STACK_TOP_MAX;
++ } else if (mm->context.asce_limit == (1UL << 31)) {
++ mm_inc_nr_pmds(mm);
++ }
+ crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm));
+ return 0;
+ }
+@@ -111,8 +119,6 @@ static inline void activate_mm(struct mm_struct *prev,
+ static inline void arch_dup_mmap(struct mm_struct *oldmm,
+ struct mm_struct *mm)
+ {
+- if (oldmm->context.asce_limit < mm->context.asce_limit)
+- crst_table_downgrade(mm, oldmm->context.asce_limit);
+ }
+
+ static inline void arch_exit_mmap(struct mm_struct *mm)
+diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
+index 7b7858f158b4..d7cc79fb6191 100644
+--- a/arch/s390/include/asm/pgalloc.h
++++ b/arch/s390/include/asm/pgalloc.h
+@@ -100,12 +100,26 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+
+ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+ {
+- spin_lock_init(&mm->context.list_lock);
+- INIT_LIST_HEAD(&mm->context.pgtable_list);
+- INIT_LIST_HEAD(&mm->context.gmap_list);
+- return (pgd_t *) crst_table_alloc(mm);
++ unsigned long *table = crst_table_alloc(mm);
++
++ if (!table)
++ return NULL;
++ if (mm->context.asce_limit == (1UL << 31)) {
++ /* Forking a compat process with 2 page table levels */
++ if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
++ crst_table_free(mm, table);
++ return NULL;
++ }
++ }
++ return (pgd_t *) table;
++}
++
++static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
++{
++ if (mm->context.asce_limit == (1UL << 31))
++ pgtable_pmd_page_dtor(virt_to_page(pgd));
++ crst_table_free(mm, (unsigned long *) pgd);
+ }
+-#define pgd_free(mm, pgd) crst_table_free(mm, (unsigned long *) pgd)
+
+ static inline void pmd_populate(struct mm_struct *mm,
+ pmd_t *pmd, pgtable_t pte)
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 945f9e13f1aa..917148620f49 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -1674,6 +1674,13 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
+ return;
+ }
+ break;
++ case MSR_IA32_PEBS_ENABLE:
++ /* PEBS needs a quiescent period after being disabled (to write
++ * a record). Disabling PEBS through VMX MSR swapping doesn't
++ * provide that period, so a CPU could write host's record into
++ * guest's memory.
++ */
++ wrmsrl(MSR_IA32_PEBS_ENABLE, 0);
+ }
+
+ for (i = 0; i < m->nr; ++i)
+@@ -1711,26 +1718,31 @@ static void reload_tss(void)
+
+ static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset)
+ {
+- u64 guest_efer;
+- u64 ignore_bits;
++ u64 guest_efer = vmx->vcpu.arch.efer;
++ u64 ignore_bits = 0;
+
+- guest_efer = vmx->vcpu.arch.efer;
++ if (!enable_ept) {
++ /*
++ * NX is needed to handle CR0.WP=1, CR4.SMEP=1. Testing
++ * host CPUID is more efficient than testing guest CPUID
++ * or CR4. Host SMEP is anyway a requirement for guest SMEP.
++ */
++ if (boot_cpu_has(X86_FEATURE_SMEP))
++ guest_efer |= EFER_NX;
++ else if (!(guest_efer & EFER_NX))
++ ignore_bits |= EFER_NX;
++ }
+
+ /*
+- * NX is emulated; LMA and LME handled by hardware; SCE meaningless
+- * outside long mode
++ * LMA and LME handled by hardware; SCE meaningless outside long mode.
+ */
+- ignore_bits = EFER_NX | EFER_SCE;
++ ignore_bits |= EFER_SCE;
+ #ifdef CONFIG_X86_64
+ ignore_bits |= EFER_LMA | EFER_LME;
+ /* SCE is meaningful only in long mode on Intel */
+ if (guest_efer & EFER_LMA)
+ ignore_bits &= ~(u64)EFER_SCE;
+ #endif
+- guest_efer &= ~ignore_bits;
+- guest_efer |= host_efer & ignore_bits;
+- vmx->guest_msrs[efer_offset].data = guest_efer;
+- vmx->guest_msrs[efer_offset].mask = ~ignore_bits;
+
+ clear_atomic_switch_msr(vmx, MSR_EFER);
+
+@@ -1741,16 +1753,21 @@ static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset)
+ */
+ if (cpu_has_load_ia32_efer ||
+ (enable_ept && ((vmx->vcpu.arch.efer ^ host_efer) & EFER_NX))) {
+- guest_efer = vmx->vcpu.arch.efer;
+ if (!(guest_efer & EFER_LMA))
+ guest_efer &= ~EFER_LME;
+ if (guest_efer != host_efer)
+ add_atomic_switch_msr(vmx, MSR_EFER,
+ guest_efer, host_efer);
+ return false;
+- }
++ } else {
++ guest_efer &= ~ignore_bits;
++ guest_efer |= host_efer & ignore_bits;
+
+- return true;
++ vmx->guest_msrs[efer_offset].data = guest_efer;
++ vmx->guest_msrs[efer_offset].mask = ~ignore_bits;
++
++ return true;
++ }
+ }
+
+ static unsigned long segment_base(u16 selector)
+diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
+index 8d8c35623f2a..ffa809f30b19 100644
+--- a/drivers/dma/at_xdmac.c
++++ b/drivers/dma/at_xdmac.c
+@@ -176,6 +176,7 @@
+ #define AT_XDMAC_MAX_CHAN 0x20
+ #define AT_XDMAC_MAX_CSIZE 16 /* 16 data */
+ #define AT_XDMAC_MAX_DWIDTH 8 /* 64 bits */
++#define AT_XDMAC_RESIDUE_MAX_RETRIES 5
+
+ #define AT_XDMAC_DMA_BUSWIDTHS\
+ (BIT(DMA_SLAVE_BUSWIDTH_UNDEFINED) |\
+@@ -925,8 +926,8 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ struct at_xdmac_desc *desc, *_desc;
+ struct list_head *descs_list;
+ enum dma_status ret;
+- int residue;
+- u32 cur_nda, mask, value;
++ int residue, retry;
++ u32 cur_nda, check_nda, cur_ubc, mask, value;
+ u8 dwidth = 0;
+ unsigned long flags;
+
+@@ -963,7 +964,42 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ cpu_relax();
+ }
+
++ /*
++ * When processing the residue, we need to read two registers but we
++ * can't do it in an atomic way. AT_XDMAC_CNDA is used to find where
++ * we stand in the descriptor list and AT_XDMAC_CUBC is used
++ * to know how many data are remaining for the current descriptor.
++ * Since the dma channel is not paused to not loose data, between the
++ * AT_XDMAC_CNDA and AT_XDMAC_CUBC read, we may have change of
++ * descriptor.
++ * For that reason, after reading AT_XDMAC_CUBC, we check if we are
++ * still using the same descriptor by reading a second time
++ * AT_XDMAC_CNDA. If AT_XDMAC_CNDA has changed, it means we have to
++ * read again AT_XDMAC_CUBC.
++ * Memory barriers are used to ensure the read order of the registers.
++ * A max number of retries is set because unlikely it can never ends if
++ * we are transferring a lot of data with small buffers.
++ */
+ cur_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
++ rmb();
++ cur_ubc = at_xdmac_chan_read(atchan, AT_XDMAC_CUBC);
++ for (retry = 0; retry < AT_XDMAC_RESIDUE_MAX_RETRIES; retry++) {
++ rmb();
++ check_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
++
++ if (likely(cur_nda == check_nda))
++ break;
++
++ cur_nda = check_nda;
++ rmb();
++ cur_ubc = at_xdmac_chan_read(atchan, AT_XDMAC_CUBC);
++ }
++
++ if (unlikely(retry >= AT_XDMAC_RESIDUE_MAX_RETRIES)) {
++ ret = DMA_ERROR;
++ goto spin_unlock;
++ }
++
+ /*
+ * Remove size of all microblocks already transferred and the current
+ * one. Then add the remaining size to transfer of the current
+@@ -976,7 +1012,7 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ if ((desc->lld.mbr_nda & 0xfffffffc) == cur_nda)
+ break;
+ }
+- residue += at_xdmac_chan_read(atchan, AT_XDMAC_CUBC) << dwidth;
++ residue += cur_ubc << dwidth;
+
+ dma_set_residue(txstate, residue);
+
+diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
+index 447dbfa6c793..7ac42d063574 100644
+--- a/drivers/gpu/drm/radeon/atombios_dp.c
++++ b/drivers/gpu/drm/radeon/atombios_dp.c
+@@ -254,7 +254,7 @@ void radeon_dp_aux_init(struct radeon_connector *radeon_connector)
+ #define DP_VOLTAGE_MAX DP_TRAIN_VOLTAGE_SWING_LEVEL_3
+ #define DP_PRE_EMPHASIS_MAX DP_TRAIN_PRE_EMPH_LEVEL_3
+
+-static void dp_get_adjust_train(u8 link_status[DP_LINK_STATUS_SIZE],
++static void dp_get_adjust_train(const u8 link_status[DP_LINK_STATUS_SIZE],
+ int lane_count,
+ u8 train_set[4])
+ {
+@@ -301,77 +301,43 @@ static int convert_bpc_to_bpp(int bpc)
+ return bpc * 3;
+ }
+
+-/* get the max pix clock supported by the link rate and lane num */
+-static int dp_get_max_dp_pix_clock(int link_rate,
+- int lane_num,
+- int bpp)
+-{
+- return (link_rate * lane_num * 8) / bpp;
+-}
+-
+ /***** radeon specific DP functions *****/
+
+-int radeon_dp_get_max_link_rate(struct drm_connector *connector,
+- u8 dpcd[DP_DPCD_SIZE])
+-{
+- int max_link_rate;
+-
+- if (radeon_connector_is_dp12_capable(connector))
+- max_link_rate = min(drm_dp_max_link_rate(dpcd), 540000);
+- else
+- max_link_rate = min(drm_dp_max_link_rate(dpcd), 270000);
+-
+- return max_link_rate;
+-}
+-
+-/* First get the min lane# when low rate is used according to pixel clock
+- * (prefer low rate), second check max lane# supported by DP panel,
+- * if the max lane# < low rate lane# then use max lane# instead.
+- */
+-static int radeon_dp_get_dp_lane_number(struct drm_connector *connector,
+- u8 dpcd[DP_DPCD_SIZE],
+- int pix_clock)
++int radeon_dp_get_dp_link_config(struct drm_connector *connector,
++ const u8 dpcd[DP_DPCD_SIZE],
++ unsigned pix_clock,
++ unsigned *dp_lanes, unsigned *dp_rate)
+ {
+ int bpp = convert_bpc_to_bpp(radeon_get_monitor_bpc(connector));
+- int max_link_rate = radeon_dp_get_max_link_rate(connector, dpcd);
+- int max_lane_num = drm_dp_max_lane_count(dpcd);
+- int lane_num;
+- int max_dp_pix_clock;
+-
+- for (lane_num = 1; lane_num < max_lane_num; lane_num <<= 1) {
+- max_dp_pix_clock = dp_get_max_dp_pix_clock(max_link_rate, lane_num, bpp);
+- if (pix_clock <= max_dp_pix_clock)
+- break;
+- }
+-
+- return lane_num;
+-}
+-
+-static int radeon_dp_get_dp_link_clock(struct drm_connector *connector,
+- u8 dpcd[DP_DPCD_SIZE],
+- int pix_clock)
+-{
+- int bpp = convert_bpc_to_bpp(radeon_get_monitor_bpc(connector));
+- int lane_num, max_pix_clock;
++ static const unsigned link_rates[3] = { 162000, 270000, 540000 };
++ unsigned max_link_rate = drm_dp_max_link_rate(dpcd);
++ unsigned max_lane_num = drm_dp_max_lane_count(dpcd);
++ unsigned lane_num, i, max_pix_clock;
+
+ if (radeon_connector_encoder_get_dp_bridge_encoder_id(connector) ==
+- ENCODER_OBJECT_ID_NUTMEG)
+- return 270000;
+-
+- lane_num = radeon_dp_get_dp_lane_number(connector, dpcd, pix_clock);
+- max_pix_clock = dp_get_max_dp_pix_clock(162000, lane_num, bpp);
+- if (pix_clock <= max_pix_clock)
+- return 162000;
+- max_pix_clock = dp_get_max_dp_pix_clock(270000, lane_num, bpp);
+- if (pix_clock <= max_pix_clock)
+- return 270000;
+- if (radeon_connector_is_dp12_capable(connector)) {
+- max_pix_clock = dp_get_max_dp_pix_clock(540000, lane_num, bpp);
+- if (pix_clock <= max_pix_clock)
+- return 540000;
++ ENCODER_OBJECT_ID_NUTMEG) {
++ for (lane_num = 1; lane_num <= max_lane_num; lane_num <<= 1) {
++ max_pix_clock = (lane_num * 270000 * 8) / bpp;
++ if (max_pix_clock >= pix_clock) {
++ *dp_lanes = lane_num;
++ *dp_rate = 270000;
++ return 0;
++ }
++ }
++ } else {
++ for (lane_num = 1; lane_num <= max_lane_num; lane_num <<= 1) {
++ for (i = 0; i < ARRAY_SIZE(link_rates) && link_rates[i] <= max_link_rate; i++) {
++ max_pix_clock = (lane_num * link_rates[i] * 8) / bpp;
++ if (max_pix_clock >= pix_clock) {
++ *dp_lanes = lane_num;
++ *dp_rate = link_rates[i];
++ return 0;
++ }
++ }
++ }
+ }
+
+- return radeon_dp_get_max_link_rate(connector, dpcd);
++ return -EINVAL;
+ }
+
+ static u8 radeon_dp_encoder_service(struct radeon_device *rdev,
+@@ -490,6 +456,7 @@ void radeon_dp_set_link_config(struct drm_connector *connector,
+ {
+ struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+ struct radeon_connector_atom_dig *dig_connector;
++ int ret;
+
+ if (!radeon_connector->con_priv)
+ return;
+@@ -497,10 +464,14 @@ void radeon_dp_set_link_config(struct drm_connector *connector,
+
+ if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
+ (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP)) {
+- dig_connector->dp_clock =
+- radeon_dp_get_dp_link_clock(connector, dig_connector->dpcd, mode->clock);
+- dig_connector->dp_lane_count =
+- radeon_dp_get_dp_lane_number(connector, dig_connector->dpcd, mode->clock);
++ ret = radeon_dp_get_dp_link_config(connector, dig_connector->dpcd,
++ mode->clock,
++ &dig_connector->dp_lane_count,
++ &dig_connector->dp_clock);
++ if (ret) {
++ dig_connector->dp_clock = 0;
++ dig_connector->dp_lane_count = 0;
++ }
+ }
+ }
+
+@@ -509,7 +480,8 @@ int radeon_dp_mode_valid_helper(struct drm_connector *connector,
+ {
+ struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+ struct radeon_connector_atom_dig *dig_connector;
+- int dp_clock;
++ unsigned dp_clock, dp_lanes;
++ int ret;
+
+ if ((mode->clock > 340000) &&
+ (!radeon_connector_is_dp12_capable(connector)))
+@@ -519,8 +491,12 @@ int radeon_dp_mode_valid_helper(struct drm_connector *connector,
+ return MODE_CLOCK_HIGH;
+ dig_connector = radeon_connector->con_priv;
+
+- dp_clock =
+- radeon_dp_get_dp_link_clock(connector, dig_connector->dpcd, mode->clock);
++ ret = radeon_dp_get_dp_link_config(connector, dig_connector->dpcd,
++ mode->clock,
++ &dp_lanes,
++ &dp_clock);
++ if (ret)
++ return MODE_CLOCK_HIGH;
+
+ if ((dp_clock == 540000) &&
+ (!radeon_connector_is_dp12_capable(connector)))
+diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c
+index c9ff4cf4c4e7..c4b4c0233937 100644
+--- a/drivers/gpu/drm/radeon/radeon_dp_mst.c
++++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c
+@@ -520,11 +520,17 @@ static bool radeon_mst_mode_fixup(struct drm_encoder *encoder,
+ drm_mode_set_crtcinfo(adjusted_mode, 0);
+ {
+ struct radeon_connector_atom_dig *dig_connector;
++ int ret;
+
+ dig_connector = mst_enc->connector->con_priv;
+- dig_connector->dp_lane_count = drm_dp_max_lane_count(dig_connector->dpcd);
+- dig_connector->dp_clock = radeon_dp_get_max_link_rate(&mst_enc->connector->base,
+- dig_connector->dpcd);
++ ret = radeon_dp_get_dp_link_config(&mst_enc->connector->base,
++ dig_connector->dpcd, adjusted_mode->clock,
++ &dig_connector->dp_lane_count,
++ &dig_connector->dp_clock);
++ if (ret) {
++ dig_connector->dp_lane_count = 0;
++ dig_connector->dp_clock = 0;
++ }
+ DRM_DEBUG_KMS("dig clock %p %d %d\n", dig_connector,
+ dig_connector->dp_lane_count, dig_connector->dp_clock);
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
+index 9af2d8398e90..43ba333949c7 100644
+--- a/drivers/gpu/drm/radeon/radeon_mode.h
++++ b/drivers/gpu/drm/radeon/radeon_mode.h
+@@ -752,8 +752,10 @@ extern u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector);
+ extern bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector);
+ extern int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
+ struct drm_connector *connector);
+-int radeon_dp_get_max_link_rate(struct drm_connector *connector,
+- u8 *dpcd);
++extern int radeon_dp_get_dp_link_config(struct drm_connector *connector,
++ const u8 *dpcd,
++ unsigned pix_clock,
++ unsigned *dp_lanes, unsigned *dp_rate);
+ extern void radeon_dp_set_rx_power_state(struct drm_connector *connector,
+ u8 power_state);
+ extern void radeon_dp_aux_init(struct radeon_connector *radeon_connector);
+diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
+index a56eab7f0ab1..8319eed613b0 100644
+--- a/drivers/gpu/drm/radeon/radeon_pm.c
++++ b/drivers/gpu/drm/radeon/radeon_pm.c
+@@ -1079,6 +1079,8 @@ force:
+
+ /* update display watermarks based on new power state */
+ radeon_bandwidth_update(rdev);
++ /* update displays */
++ radeon_dpm_display_configuration_changed(rdev);
+
+ /* wait for the rings to drain */
+ for (i = 0; i < RADEON_NUM_RINGS; i++) {
+@@ -1095,9 +1097,6 @@ force:
+
+ radeon_dpm_post_set_power_state(rdev);
+
+- /* update displays */
+- radeon_dpm_display_configuration_changed(rdev);
+-
+ rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
+ rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
+ rdev->pm.dpm.single_display = single_display;
+diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
+index 8b4d3e6875eb..21924f52863f 100644
+--- a/drivers/net/can/usb/gs_usb.c
++++ b/drivers/net/can/usb/gs_usb.c
+@@ -826,9 +826,8 @@ static struct gs_can *gs_make_candev(unsigned int channel, struct usb_interface
+ static void gs_destroy_candev(struct gs_can *dev)
+ {
+ unregister_candev(dev->netdev);
+- free_candev(dev->netdev);
+ usb_kill_anchored_urbs(&dev->tx_submitted);
+- kfree(dev);
++ free_candev(dev->netdev);
+ }
+
+ static int gs_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+@@ -913,12 +912,15 @@ static int gs_usb_probe(struct usb_interface *intf, const struct usb_device_id *
+ for (i = 0; i < icount; i++) {
+ dev->canch[i] = gs_make_candev(i, intf);
+ if (IS_ERR_OR_NULL(dev->canch[i])) {
++ /* save error code to return later */
++ rc = PTR_ERR(dev->canch[i]);
++
+ /* on failure destroy previously created candevs */
+ icount = i;
+- for (i = 0; i < icount; i++) {
++ for (i = 0; i < icount; i++)
+ gs_destroy_candev(dev->canch[i]);
+- dev->canch[i] = NULL;
+- }
++
++ usb_kill_anchored_urbs(&dev->rx_submitted);
+ kfree(dev);
+ return rc;
+ }
+@@ -939,16 +941,12 @@ static void gs_usb_disconnect(struct usb_interface *intf)
+ return;
+ }
+
+- for (i = 0; i < GS_MAX_INTF; i++) {
+- struct gs_can *can = dev->canch[i];
+-
+- if (!can)
+- continue;
+-
+- gs_destroy_candev(can);
+- }
++ for (i = 0; i < GS_MAX_INTF; i++)
++ if (dev->canch[i])
++ gs_destroy_candev(dev->canch[i]);
+
+ usb_kill_anchored_urbs(&dev->rx_submitted);
++ kfree(dev);
+ }
+
+ static const struct usb_device_id gs_usb_table[] = {
+diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c
+index 281451c274ca..771097f2162d 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/tx.c
++++ b/drivers/net/wireless/iwlwifi/mvm/tx.c
+@@ -370,6 +370,15 @@ int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb)
+ return -1;
+ }
+
++ /*
++ * Increase the pending frames counter, so that later when a reply comes
++ * in and the counter is decreased - we don't start getting negative
++ * values.
++ * Note that we don't need to make sure it isn't agg'd, since we're
++ * TXing non-sta
++ */
++ atomic_inc(&mvm->pending_frames[sta_id]);
++
+ return 0;
+ }
+
+diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
+index ad48837ead42..eed7c5a31b15 100644
+--- a/drivers/target/target_core_tmr.c
++++ b/drivers/target/target_core_tmr.c
+@@ -181,7 +181,6 @@ void core_tmr_abort_task(
+
+ if (!__target_check_io_state(se_cmd, se_sess, 0)) {
+ spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
+- target_put_sess_cmd(se_cmd);
+ goto out;
+ }
+
+diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
+index 9a83f149ac85..95dfff88de11 100644
+--- a/fs/ext4/ext4.h
++++ b/fs/ext4/ext4.h
+@@ -873,6 +873,15 @@ struct ext4_inode_info {
+ * by other means, so we have i_data_sem.
+ */
+ struct rw_semaphore i_data_sem;
++ /*
++ * i_mmap_sem is for serializing page faults with truncate / punch hole
++ * operations. We have to make sure that new page cannot be faulted in
++ * a section of the inode that is being punched. We cannot easily use
++ * i_data_sem for this since we need protection for the whole punch
++ * operation and i_data_sem ranks below transaction start so we have
++ * to occasionally drop it.
++ */
++ struct rw_semaphore i_mmap_sem;
+ struct inode vfs_inode;
+ struct jbd2_inode *jinode;
+
+@@ -2287,6 +2296,7 @@ extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks);
+ extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode,
+ loff_t lstart, loff_t lend);
+ extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
++extern int ext4_filemap_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
+ extern qsize_t *ext4_get_reserved_space(struct inode *inode);
+ extern void ext4_da_update_reserve_space(struct inode *inode,
+ int used, int quota_claim);
+@@ -2632,6 +2642,9 @@ static inline int ext4_update_inode_size(struct inode *inode, loff_t newsize)
+ return changed;
+ }
+
++int ext4_update_disksize_before_punch(struct inode *inode, loff_t offset,
++ loff_t len);
++
+ struct ext4_group_info {
+ unsigned long bb_state;
+ struct rb_root bb_free_root;
+diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
+index 87ba10d1d3bc..ea12f565be24 100644
+--- a/fs/ext4/extents.c
++++ b/fs/ext4/extents.c
+@@ -4741,7 +4741,6 @@ static long ext4_zero_range(struct file *file, loff_t offset,
+ int partial_begin, partial_end;
+ loff_t start, end;
+ ext4_lblk_t lblk;
+- struct address_space *mapping = inode->i_mapping;
+ unsigned int blkbits = inode->i_blkbits;
+
+ trace_ext4_zero_range(inode, offset, len, mode);
+@@ -4757,17 +4756,6 @@ static long ext4_zero_range(struct file *file, loff_t offset,
+ }
+
+ /*
+- * Write out all dirty pages to avoid race conditions
+- * Then release them.
+- */
+- if (mapping->nrpages && mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
+- ret = filemap_write_and_wait_range(mapping, offset,
+- offset + len - 1);
+- if (ret)
+- return ret;
+- }
+-
+- /*
+ * Round up offset. This is not fallocate, we neet to zero out
+ * blocks, so convert interior block aligned part of the range to
+ * unwritten and possibly manually zero out unaligned parts of the
+@@ -4810,6 +4798,10 @@ static long ext4_zero_range(struct file *file, loff_t offset,
+ if (mode & FALLOC_FL_KEEP_SIZE)
+ flags |= EXT4_GET_BLOCKS_KEEP_SIZE;
+
++ /* Wait all existing dio workers, newcomers will block on i_mutex */
++ ext4_inode_block_unlocked_dio(inode);
++ inode_dio_wait(inode);
++
+ /* Preallocate the range including the unaligned edges */
+ if (partial_begin || partial_end) {
+ ret = ext4_alloc_file_blocks(file,
+@@ -4818,7 +4810,7 @@ static long ext4_zero_range(struct file *file, loff_t offset,
+ round_down(offset, 1 << blkbits)) >> blkbits,
+ new_size, flags, mode);
+ if (ret)
+- goto out_mutex;
++ goto out_dio;
+
+ }
+
+@@ -4827,16 +4819,23 @@ static long ext4_zero_range(struct file *file, loff_t offset,
+ flags |= (EXT4_GET_BLOCKS_CONVERT_UNWRITTEN |
+ EXT4_EX_NOCACHE);
+
+- /* Now release the pages and zero block aligned part of pages*/
++ /*
++ * Prevent page faults from reinstantiating pages we have
++ * released from page cache.
++ */
++ down_write(&EXT4_I(inode)->i_mmap_sem);
++ ret = ext4_update_disksize_before_punch(inode, offset, len);
++ if (ret) {
++ up_write(&EXT4_I(inode)->i_mmap_sem);
++ goto out_dio;
++ }
++ /* Now release the pages and zero block aligned part of pages */
+ truncate_pagecache_range(inode, start, end - 1);
+ inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
+
+- /* Wait all existing dio workers, newcomers will block on i_mutex */
+- ext4_inode_block_unlocked_dio(inode);
+- inode_dio_wait(inode);
+-
+ ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size,
+ flags, mode);
++ up_write(&EXT4_I(inode)->i_mmap_sem);
+ if (ret)
+ goto out_dio;
+ }
+@@ -4964,8 +4963,13 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
+ goto out;
+ }
+
++ /* Wait all existing dio workers, newcomers will block on i_mutex */
++ ext4_inode_block_unlocked_dio(inode);
++ inode_dio_wait(inode);
++
+ ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size,
+ flags, mode);
++ ext4_inode_resume_unlocked_dio(inode);
+ if (ret)
+ goto out;
+
+@@ -5424,21 +5428,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
+ return ret;
+ }
+
+- /*
+- * Need to round down offset to be aligned with page size boundary
+- * for page size > block size.
+- */
+- ioffset = round_down(offset, PAGE_SIZE);
+-
+- /* Write out all dirty pages */
+- ret = filemap_write_and_wait_range(inode->i_mapping, ioffset,
+- LLONG_MAX);
+- if (ret)
+- return ret;
+-
+- /* Take mutex lock */
+ mutex_lock(&inode->i_mutex);
+-
+ /*
+ * There is no need to overlap collapse range with EOF, in which case
+ * it is effectively a truncate operation
+@@ -5454,17 +5444,43 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
+ goto out_mutex;
+ }
+
+- truncate_pagecache(inode, ioffset);
+-
+ /* Wait for existing dio to complete */
+ ext4_inode_block_unlocked_dio(inode);
+ inode_dio_wait(inode);
+
++ /*
++ * Prevent page faults from reinstantiating pages we have released from
++ * page cache.
++ */
++ down_write(&EXT4_I(inode)->i_mmap_sem);
++ /*
++ * Need to round down offset to be aligned with page size boundary
++ * for page size > block size.
++ */
++ ioffset = round_down(offset, PAGE_SIZE);
++ /*
++ * Write tail of the last page before removed range since it will get
++ * removed from the page cache below.
++ */
++ ret = filemap_write_and_wait_range(inode->i_mapping, ioffset, offset);
++ if (ret)
++ goto out_mmap;
++ /*
++ * Write data that will be shifted to preserve them when discarding
++ * page cache below. We are also protected from pages becoming dirty
++ * by i_mmap_sem.
++ */
++ ret = filemap_write_and_wait_range(inode->i_mapping, offset + len,
++ LLONG_MAX);
++ if (ret)
++ goto out_mmap;
++ truncate_pagecache(inode, ioffset);
++
+ credits = ext4_writepage_trans_blocks(inode);
+ handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE, credits);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+- goto out_dio;
++ goto out_mmap;
+ }
+
+ down_write(&EXT4_I(inode)->i_data_sem);
+@@ -5503,7 +5519,8 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
+
+ out_stop:
+ ext4_journal_stop(handle);
+-out_dio:
++out_mmap:
++ up_write(&EXT4_I(inode)->i_mmap_sem);
+ ext4_inode_resume_unlocked_dio(inode);
+ out_mutex:
+ mutex_unlock(&inode->i_mutex);
+diff --git a/fs/ext4/file.c b/fs/ext4/file.c
+index 0613c256c344..dd65fac5ff2f 100644
+--- a/fs/ext4/file.c
++++ b/fs/ext4/file.c
+@@ -213,7 +213,7 @@ static const struct vm_operations_struct ext4_dax_vm_ops = {
+ #endif
+
+ static const struct vm_operations_struct ext4_file_vm_ops = {
+- .fault = filemap_fault,
++ .fault = ext4_filemap_fault,
+ .map_pages = filemap_map_pages,
+ .page_mkwrite = ext4_page_mkwrite,
+ };
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index 2b3a53a51582..3291e1af0e24 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -3524,6 +3524,35 @@ int ext4_can_truncate(struct inode *inode)
+ }
+
+ /*
++ * We have to make sure i_disksize gets properly updated before we truncate
++ * page cache due to hole punching or zero range. Otherwise i_disksize update
++ * can get lost as it may have been postponed to submission of writeback but
++ * that will never happen after we truncate page cache.
++ */
++int ext4_update_disksize_before_punch(struct inode *inode, loff_t offset,
++ loff_t len)
++{
++ handle_t *handle;
++ loff_t size = i_size_read(inode);
++
++ WARN_ON(!mutex_is_locked(&inode->i_mutex));
++ if (offset > size || offset + len < size)
++ return 0;
++
++ if (EXT4_I(inode)->i_disksize >= size)
++ return 0;
++
++ handle = ext4_journal_start(inode, EXT4_HT_MISC, 1);
++ if (IS_ERR(handle))
++ return PTR_ERR(handle);
++ ext4_update_i_disksize(inode, size);
++ ext4_mark_inode_dirty(handle, inode);
++ ext4_journal_stop(handle);
++
++ return 0;
++}
++
++/*
+ * ext4_punch_hole: punches a hole in a file by releaseing the blocks
+ * associated with the given offset and length
+ *
+@@ -3588,17 +3617,26 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
+
+ }
+
++ /* Wait all existing dio workers, newcomers will block on i_mutex */
++ ext4_inode_block_unlocked_dio(inode);
++ inode_dio_wait(inode);
++
++ /*
++ * Prevent page faults from reinstantiating pages we have released from
++ * page cache.
++ */
++ down_write(&EXT4_I(inode)->i_mmap_sem);
+ first_block_offset = round_up(offset, sb->s_blocksize);
+ last_block_offset = round_down((offset + length), sb->s_blocksize) - 1;
+
+ /* Now release the pages and zero block aligned part of pages*/
+- if (last_block_offset > first_block_offset)
++ if (last_block_offset > first_block_offset) {
++ ret = ext4_update_disksize_before_punch(inode, offset, length);
++ if (ret)
++ goto out_dio;
+ truncate_pagecache_range(inode, first_block_offset,
+ last_block_offset);
+-
+- /* Wait all existing dio workers, newcomers will block on i_mutex */
+- ext4_inode_block_unlocked_dio(inode);
+- inode_dio_wait(inode);
++ }
+
+ if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
+ credits = ext4_writepage_trans_blocks(inode);
+@@ -3645,16 +3683,12 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
+ if (IS_SYNC(inode))
+ ext4_handle_sync(handle);
+
+- /* Now release the pages again to reduce race window */
+- if (last_block_offset > first_block_offset)
+- truncate_pagecache_range(inode, first_block_offset,
+- last_block_offset);
+-
+ inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
+ ext4_mark_inode_dirty(handle, inode);
+ out_stop:
+ ext4_journal_stop(handle);
+ out_dio:
++ up_write(&EXT4_I(inode)->i_mmap_sem);
+ ext4_inode_resume_unlocked_dio(inode);
+ out_mutex:
+ mutex_unlock(&inode->i_mutex);
+@@ -4775,11 +4809,13 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
+ } else
+ ext4_wait_for_tail_page_commit(inode);
+ }
++ down_write(&EXT4_I(inode)->i_mmap_sem);
+ /*
+ * Truncate pagecache after we've waited for commit
+ * in data=journal mode to make pages freeable.
+ */
+ truncate_pagecache(inode, inode->i_size);
++ up_write(&EXT4_I(inode)->i_mmap_sem);
+ }
+ /*
+ * We want to call ext4_truncate() even if attr->ia_size ==
+@@ -5234,6 +5270,8 @@ int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
+
+ sb_start_pagefault(inode->i_sb);
+ file_update_time(vma->vm_file);
++
++ down_read(&EXT4_I(inode)->i_mmap_sem);
+ /* Delalloc case is easy... */
+ if (test_opt(inode->i_sb, DELALLOC) &&
+ !ext4_should_journal_data(inode) &&
+@@ -5303,6 +5341,19 @@ retry_alloc:
+ out_ret:
+ ret = block_page_mkwrite_return(ret);
+ out:
++ up_read(&EXT4_I(inode)->i_mmap_sem);
+ sb_end_pagefault(inode->i_sb);
+ return ret;
+ }
++
++int ext4_filemap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
++{
++ struct inode *inode = file_inode(vma->vm_file);
++ int err;
++
++ down_read(&EXT4_I(inode)->i_mmap_sem);
++ err = filemap_fault(vma, vmf);
++ up_read(&EXT4_I(inode)->i_mmap_sem);
++
++ return err;
++}
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index 8a3b9f14d198..6f5ca3e92246 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -945,6 +945,7 @@ static void init_once(void *foo)
+ INIT_LIST_HEAD(&ei->i_orphan);
+ init_rwsem(&ei->xattr_sem);
+ init_rwsem(&ei->i_data_sem);
++ init_rwsem(&ei->i_mmap_sem);
+ inode_init_once(&ei->vfs_inode);
+ }
+
+diff --git a/fs/ext4/truncate.h b/fs/ext4/truncate.h
+index 011ba6670d99..c70d06a383e2 100644
+--- a/fs/ext4/truncate.h
++++ b/fs/ext4/truncate.h
+@@ -10,8 +10,10 @@
+ */
+ static inline void ext4_truncate_failed_write(struct inode *inode)
+ {
++ down_write(&EXT4_I(inode)->i_mmap_sem);
+ truncate_inode_pages(inode->i_mapping, inode->i_size);
+ ext4_truncate(inode);
++ up_write(&EXT4_I(inode)->i_mmap_sem);
+ }
+
+ /*
+diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
+index 1ba5c97943b8..cfbceb116356 100644
+--- a/fs/jffs2/dir.c
++++ b/fs/jffs2/dir.c
+@@ -845,9 +845,14 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
+
+ pr_notice("%s(): Link succeeded, unlink failed (err %d). You now have a hard link\n",
+ __func__, ret);
+- /* Might as well let the VFS know */
+- d_instantiate(new_dentry, d_inode(old_dentry));
+- ihold(d_inode(old_dentry));
++ /*
++ * We can't keep the target in dcache after that.
++ * For one thing, we can't afford dentry aliases for directories.
++ * For another, if there was a victim, we _can't_ set new inode
++ * for that sucker and we have to trigger mount eviction - the
++ * caller won't do it on its own since we are returning an error.
++ */
++ d_invalidate(new_dentry);
+ new_dir_i->i_mtime = new_dir_i->i_ctime = ITIME(now);
+ return ret;
+ }
+diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
+index 80021c709af9..0c2632386f35 100644
+--- a/fs/ncpfs/dir.c
++++ b/fs/ncpfs/dir.c
+@@ -633,7 +633,7 @@ ncp_fill_cache(struct file *file, struct dir_context *ctx,
+ d_rehash(newdent);
+ } else {
+ spin_lock(&dentry->d_lock);
+- NCP_FINFO(inode)->flags &= ~NCPI_DIR_CACHE;
++ NCP_FINFO(dir)->flags &= ~NCPI_DIR_CACHE;
+ spin_unlock(&dentry->d_lock);
+ }
+ } else {
+diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
+index 692ceda3bc21..a2b1d7ce3e1a 100644
+--- a/fs/overlayfs/dir.c
++++ b/fs/overlayfs/dir.c
+@@ -618,7 +618,8 @@ static int ovl_remove_upper(struct dentry *dentry, bool is_dir)
+ * sole user of this dentry. Too tricky... Just unhash for
+ * now.
+ */
+- d_drop(dentry);
++ if (!err)
++ d_drop(dentry);
+ mutex_unlock(&dir->i_mutex);
+
+ return err;
+@@ -903,6 +904,13 @@ static int ovl_rename2(struct inode *olddir, struct dentry *old,
+ if (!overwrite && new_is_dir && !old_opaque && new_opaque)
+ ovl_remove_opaque(newdentry);
+
++ /*
++ * Old dentry now lives in different location. Dentries in
++ * lowerstack are stale. We cannot drop them here because
++ * access to them is lockless. This could be only pure upper
++ * or opaque directory - numlower is zero. Or upper non-dir
++ * entry - its pureness is tracked by flag opaque.
++ */
+ if (old_opaque != new_opaque) {
+ ovl_dentry_set_opaque(old, new_opaque);
+ if (!overwrite)
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index a1b069e5e363..e505b44a9184 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -66,6 +66,8 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr)
+ if (upperdentry) {
+ mutex_lock(&upperdentry->d_inode->i_mutex);
+ err = notify_change(upperdentry, attr, NULL);
++ if (!err)
++ ovl_copyattr(upperdentry->d_inode, dentry->d_inode);
+ mutex_unlock(&upperdentry->d_inode->i_mutex);
+ } else {
+ err = ovl_copy_up_last(dentry, attr, false);
+diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
+index bd6d5c1e667d..39266655d2bd 100644
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -76,12 +76,14 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry)
+ if (oe->__upperdentry) {
+ type = __OVL_PATH_UPPER;
+
+- if (oe->numlower) {
+- if (S_ISDIR(dentry->d_inode->i_mode))
+- type |= __OVL_PATH_MERGE;
+- } else if (!oe->opaque) {
++ /*
++ * Non-dir dentry can hold lower dentry from previous
++ * location. Its purity depends only on opaque flag.
++ */
++ if (oe->numlower && S_ISDIR(dentry->d_inode->i_mode))
++ type |= __OVL_PATH_MERGE;
++ else if (!oe->opaque)
+ type |= __OVL_PATH_PURE;
+- }
+ } else {
+ if (oe->numlower > 1)
+ type |= __OVL_PATH_MERGE;
+diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
+index a6e1bca88cc6..8454fb35fcbe 100644
+--- a/include/linux/tracepoint.h
++++ b/include/linux/tracepoint.h
+@@ -131,9 +131,6 @@ extern void syscall_unregfunc(void);
+ void *it_func; \
+ void *__data; \
+ \
+- if (!cpu_online(raw_smp_processor_id())) \
+- return; \
+- \
+ if (!(cond)) \
+ return; \
+ prercu; \
+@@ -332,15 +329,19 @@ extern void syscall_unregfunc(void);
+ * "void *__data, proto" as the callback prototype.
+ */
+ #define DECLARE_TRACE_NOARGS(name) \
+- __DECLARE_TRACE(name, void, , 1, void *__data, __data)
++ __DECLARE_TRACE(name, void, , \
++ cpu_online(raw_smp_processor_id()), \
++ void *__data, __data)
+
+ #define DECLARE_TRACE(name, proto, args) \
+- __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \
+- PARAMS(void *__data, proto), \
+- PARAMS(__data, args))
++ __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \
++ cpu_online(raw_smp_processor_id()), \
++ PARAMS(void *__data, proto), \
++ PARAMS(__data, args))
+
+ #define DECLARE_TRACE_CONDITION(name, proto, args, cond) \
+- __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \
++ __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \
++ cpu_online(raw_smp_processor_id()) && (PARAMS(cond)), \
+ PARAMS(void *__data, proto), \
+ PARAMS(__data, args))
+
+diff --git a/include/net/iw_handler.h b/include/net/iw_handler.h
+index 8f81bbbc38fc..e0f4109e64c6 100644
+--- a/include/net/iw_handler.h
++++ b/include/net/iw_handler.h
+@@ -439,6 +439,12 @@ int dev_get_wireless_info(char *buffer, char **start, off_t offset, int length);
+ /* Send a single event to user space */
+ void wireless_send_event(struct net_device *dev, unsigned int cmd,
+ union iwreq_data *wrqu, const char *extra);
++#ifdef CONFIG_WEXT_CORE
++/* flush all previous wext events - if work is done from netdev notifiers */
++void wireless_nlevent_flush(void);
++#else
++static inline void wireless_nlevent_flush(void) {}
++#endif
+
+ /* We may need a function to send a stream of events to user space.
+ * More on that later... */
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index e1af58e23bee..66e6568a4736 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -1562,14 +1562,14 @@ event_sched_out(struct perf_event *event,
+
+ perf_pmu_disable(event->pmu);
+
++ event->tstamp_stopped = tstamp;
++ event->pmu->del(event, 0);
++ event->oncpu = -1;
+ event->state = PERF_EVENT_STATE_INACTIVE;
+ if (event->pending_disable) {
+ event->pending_disable = 0;
+ event->state = PERF_EVENT_STATE_OFF;
+ }
+- event->tstamp_stopped = tstamp;
+- event->pmu->del(event, 0);
+- event->oncpu = -1;
+
+ if (!is_software_event(event))
+ cpuctx->active_oncpu--;
+@@ -7641,6 +7641,9 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu,
+ }
+ }
+
++ /* symmetric to unaccount_event() in _free_event() */
++ account_event(event);
++
+ return event;
+
+ err_per_task:
+@@ -8004,8 +8007,6 @@ SYSCALL_DEFINE5(perf_event_open,
+ }
+ }
+
+- account_event(event);
+-
+ /*
+ * Special case software events and allow them to be part of
+ * any hardware group.
+@@ -8221,7 +8222,12 @@ err_context:
+ perf_unpin_context(ctx);
+ put_ctx(ctx);
+ err_alloc:
+- free_event(event);
++ /*
++ * If event_file is set, the fput() above will have called ->release()
++ * and that will take care of freeing the event.
++ */
++ if (!event_file)
++ free_event(event);
+ err_cpus:
+ put_online_cpus();
+ err_task:
+@@ -8265,8 +8271,6 @@ perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu,
+ /* Mark owner so we could distinguish it from user events. */
+ event->owner = EVENT_OWNER_KERNEL;
+
+- account_event(event);
+-
+ ctx = find_get_context(event->pmu, task, event);
+ if (IS_ERR(ctx)) {
+ err = PTR_ERR(ctx);
+diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
+index 5c564a68fb50..d71edcbd0c58 100644
+--- a/net/mac80211/agg-rx.c
++++ b/net/mac80211/agg-rx.c
+@@ -289,7 +289,7 @@ void __ieee80211_start_rx_ba_session(struct sta_info *sta,
+ }
+
+ /* prepare A-MPDU MLME for Rx aggregation */
+- tid_agg_rx = kmalloc(sizeof(struct tid_ampdu_rx), GFP_KERNEL);
++ tid_agg_rx = kzalloc(sizeof(*tid_agg_rx), GFP_KERNEL);
+ if (!tid_agg_rx)
+ goto end;
+
+diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
+index c0a9187bc3a9..cdf8609a6240 100644
+--- a/net/mac80211/ieee80211_i.h
++++ b/net/mac80211/ieee80211_i.h
+@@ -90,7 +90,7 @@ struct ieee80211_fragment_entry {
+ unsigned int last_frag;
+ unsigned int extra_len;
+ struct sk_buff_head skb_list;
+- int ccmp; /* Whether fragments were encrypted with CCMP */
++ bool check_sequential_pn; /* needed for CCMP/GCMP */
+ u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
+ };
+
+diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
+index 3ece7d1034c8..b54f398cda5d 100644
+--- a/net/mac80211/rc80211_minstrel.c
++++ b/net/mac80211/rc80211_minstrel.c
+@@ -711,7 +711,7 @@ static u32 minstrel_get_expected_throughput(void *priv_sta)
+ * computing cur_tp
+ */
+ tmp_mrs = &mi->r[idx].stats;
+- tmp_cur_tp = minstrel_get_tp_avg(&mi->r[idx], tmp_mrs->prob_ewma);
++ tmp_cur_tp = minstrel_get_tp_avg(&mi->r[idx], tmp_mrs->prob_ewma) * 10;
+ tmp_cur_tp = tmp_cur_tp * 1200 * 8 / 1024;
+
+ return tmp_cur_tp;
+diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
+index 7430a1df2ab1..1ec889dc2e46 100644
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -691,7 +691,7 @@ minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
+ if (likely(sta->ampdu_mlme.tid_tx[tid]))
+ return;
+
+- ieee80211_start_tx_ba_session(pubsta, tid, 5000);
++ ieee80211_start_tx_ba_session(pubsta, tid, 0);
+ }
+
+ static void
+@@ -1328,7 +1328,8 @@ static u32 minstrel_ht_get_expected_throughput(void *priv_sta)
+ prob = mi->groups[i].rates[j].prob_ewma;
+
+ /* convert tp_avg from pkt per second in kbps */
+- tp_avg = minstrel_ht_get_tp_avg(mi, i, j, prob) * AVG_PKT_SIZE * 8 / 1024;
++ tp_avg = minstrel_ht_get_tp_avg(mi, i, j, prob) * 10;
++ tp_avg = tp_avg * AVG_PKT_SIZE * 8 / 1024;
+
+ return tp_avg;
+ }
+diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
+index 5793f75c5ffd..d4b08d87537c 100644
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -1725,7 +1725,7 @@ ieee80211_reassemble_add(struct ieee80211_sub_if_data *sdata,
+ entry->seq = seq;
+ entry->rx_queue = rx_queue;
+ entry->last_frag = frag;
+- entry->ccmp = 0;
++ entry->check_sequential_pn = false;
+ entry->extra_len = 0;
+
+ return entry;
+@@ -1821,15 +1821,27 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
+ rx->seqno_idx, &(rx->skb));
+ if (rx->key &&
+ (rx->key->conf.cipher == WLAN_CIPHER_SUITE_CCMP ||
+- rx->key->conf.cipher == WLAN_CIPHER_SUITE_CCMP_256) &&
++ rx->key->conf.cipher == WLAN_CIPHER_SUITE_CCMP_256 ||
++ rx->key->conf.cipher == WLAN_CIPHER_SUITE_GCMP ||
++ rx->key->conf.cipher == WLAN_CIPHER_SUITE_GCMP_256) &&
+ ieee80211_has_protected(fc)) {
+ int queue = rx->security_idx;
+- /* Store CCMP PN so that we can verify that the next
+- * fragment has a sequential PN value. */
+- entry->ccmp = 1;
++
++ /* Store CCMP/GCMP PN so that we can verify that the
++ * next fragment has a sequential PN value.
++ */
++ entry->check_sequential_pn = true;
+ memcpy(entry->last_pn,
+ rx->key->u.ccmp.rx_pn[queue],
+ IEEE80211_CCMP_PN_LEN);
++ BUILD_BUG_ON(offsetof(struct ieee80211_key,
++ u.ccmp.rx_pn) !=
++ offsetof(struct ieee80211_key,
++ u.gcmp.rx_pn));
++ BUILD_BUG_ON(sizeof(rx->key->u.ccmp.rx_pn[queue]) !=
++ sizeof(rx->key->u.gcmp.rx_pn[queue]));
++ BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN !=
++ IEEE80211_GCMP_PN_LEN);
+ }
+ return RX_QUEUED;
+ }
+@@ -1844,15 +1856,21 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
+ return RX_DROP_MONITOR;
+ }
+
+- /* Verify that MPDUs within one MSDU have sequential PN values.
+- * (IEEE 802.11i, 8.3.3.4.5) */
+- if (entry->ccmp) {
++ /* "The receiver shall discard MSDUs and MMPDUs whose constituent
++ * MPDU PN values are not incrementing in steps of 1."
++ * see IEEE P802.11-REVmc/D5.0, 12.5.3.4.4, item d (for CCMP)
++ * and IEEE P802.11-REVmc/D5.0, 12.5.5.4.4, item d (for GCMP)
++ */
++ if (entry->check_sequential_pn) {
+ int i;
+ u8 pn[IEEE80211_CCMP_PN_LEN], *rpn;
+ int queue;
++
+ if (!rx->key ||
+ (rx->key->conf.cipher != WLAN_CIPHER_SUITE_CCMP &&
+- rx->key->conf.cipher != WLAN_CIPHER_SUITE_CCMP_256))
++ rx->key->conf.cipher != WLAN_CIPHER_SUITE_CCMP_256 &&
++ rx->key->conf.cipher != WLAN_CIPHER_SUITE_GCMP &&
++ rx->key->conf.cipher != WLAN_CIPHER_SUITE_GCMP_256))
+ return RX_DROP_UNUSABLE;
+ memcpy(pn, entry->last_pn, IEEE80211_CCMP_PN_LEN);
+ for (i = IEEE80211_CCMP_PN_LEN - 1; i >= 0; i--) {
+@@ -3359,6 +3377,7 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx,
+ return false;
+ /* ignore action frames to TDLS-peers */
+ if (ieee80211_is_action(hdr->frame_control) &&
++ !is_broadcast_ether_addr(bssid) &&
+ !ether_addr_equal(bssid, hdr->addr1))
+ return false;
+ }
+diff --git a/net/wireless/core.c b/net/wireless/core.c
+index 2a0bbd22854b..71e9b84847f3 100644
+--- a/net/wireless/core.c
++++ b/net/wireless/core.c
+@@ -1138,6 +1138,8 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
+ return NOTIFY_DONE;
+ }
+
++ wireless_nlevent_flush();
++
+ return NOTIFY_OK;
+ }
+
+diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
+index c8717c1d082e..b50ee5d622e1 100644
+--- a/net/wireless/wext-core.c
++++ b/net/wireless/wext-core.c
+@@ -342,6 +342,40 @@ static const int compat_event_type_size[] = {
+
+ /* IW event code */
+
++void wireless_nlevent_flush(void)
++{
++ struct sk_buff *skb;
++ struct net *net;
++
++ ASSERT_RTNL();
++
++ for_each_net(net) {
++ while ((skb = skb_dequeue(&net->wext_nlevents)))
++ rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL,
++ GFP_KERNEL);
++ }
++}
++EXPORT_SYMBOL_GPL(wireless_nlevent_flush);
++
++static int wext_netdev_notifier_call(struct notifier_block *nb,
++ unsigned long state, void *ptr)
++{
++ /*
++ * When a netdev changes state in any way, flush all pending messages
++ * to avoid them going out in a strange order, e.g. RTM_NEWLINK after
++ * RTM_DELLINK, or with IFF_UP after without IFF_UP during dev_close()
++ * or similar - all of which could otherwise happen due to delays from
++ * schedule_work().
++ */
++ wireless_nlevent_flush();
++
++ return NOTIFY_OK;
++}
++
++static struct notifier_block wext_netdev_notifier = {
++ .notifier_call = wext_netdev_notifier_call,
++};
++
+ static int __net_init wext_pernet_init(struct net *net)
+ {
+ skb_queue_head_init(&net->wext_nlevents);
+@@ -360,7 +394,12 @@ static struct pernet_operations wext_pernet_ops = {
+
+ static int __init wireless_nlevent_init(void)
+ {
+- return register_pernet_subsys(&wext_pernet_ops);
++ int err = register_pernet_subsys(&wext_pernet_ops);
++
++ if (err)
++ return err;
++
++ return register_netdevice_notifier(&wext_netdev_notifier);
+ }
+
+ subsys_initcall(wireless_nlevent_init);
+@@ -368,17 +407,8 @@ subsys_initcall(wireless_nlevent_init);
+ /* Process events generated by the wireless layer or the driver. */
+ static void wireless_nlevent_process(struct work_struct *work)
+ {
+- struct sk_buff *skb;
+- struct net *net;
+-
+ rtnl_lock();
+-
+- for_each_net(net) {
+- while ((skb = skb_dequeue(&net->wext_nlevents)))
+- rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL,
+- GFP_KERNEL);
+- }
+-
++ wireless_nlevent_flush();
+ rtnl_unlock();
+ }
+
+diff --git a/scripts/ld-version.sh b/scripts/ld-version.sh
+index 198580d245e0..1659b409ef10 100755
+--- a/scripts/ld-version.sh
++++ b/scripts/ld-version.sh
+@@ -1,7 +1,7 @@
+ #!/usr/bin/awk -f
+ # extract linker version number from stdin and turn into single number
+ {
+- gsub(".*)", "");
++ gsub(".*\\)", "");
+ split($1,a, ".");
+ print a[1]*10000000 + a[2]*100000 + a[3]*10000 + a[4]*100 + a[5];
+ exit
+diff --git a/sound/soc/codecs/wm8958-dsp2.c b/sound/soc/codecs/wm8958-dsp2.c
+index c799cca5abeb..6b864c0fc2b6 100644
+--- a/sound/soc/codecs/wm8958-dsp2.c
++++ b/sound/soc/codecs/wm8958-dsp2.c
+@@ -459,7 +459,7 @@ static int wm8958_put_mbc_enum(struct snd_kcontrol *kcontrol,
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+ struct wm8994 *control = wm8994->wm8994;
+- int value = ucontrol->value.integer.value[0];
++ int value = ucontrol->value.enumerated.item[0];
+ int reg;
+
+ /* Don't allow on the fly reconfiguration */
+@@ -549,7 +549,7 @@ static int wm8958_put_vss_enum(struct snd_kcontrol *kcontrol,
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+ struct wm8994 *control = wm8994->wm8994;
+- int value = ucontrol->value.integer.value[0];
++ int value = ucontrol->value.enumerated.item[0];
+ int reg;
+
+ /* Don't allow on the fly reconfiguration */
+@@ -582,7 +582,7 @@ static int wm8958_put_vss_hpf_enum(struct snd_kcontrol *kcontrol,
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+ struct wm8994 *control = wm8994->wm8994;
+- int value = ucontrol->value.integer.value[0];
++ int value = ucontrol->value.enumerated.item[0];
+ int reg;
+
+ /* Don't allow on the fly reconfiguration */
+@@ -749,7 +749,7 @@ static int wm8958_put_enh_eq_enum(struct snd_kcontrol *kcontrol,
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+ struct wm8994 *control = wm8994->wm8994;
+- int value = ucontrol->value.integer.value[0];
++ int value = ucontrol->value.enumerated.item[0];
+ int reg;
+
+ /* Don't allow on the fly reconfiguration */
+diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
+index a1c04dab6684..a484ca8421af 100644
+--- a/sound/soc/codecs/wm8994.c
++++ b/sound/soc/codecs/wm8994.c
+@@ -361,7 +361,7 @@ static int wm8994_put_drc_enum(struct snd_kcontrol *kcontrol,
+ struct wm8994 *control = wm8994->wm8994;
+ struct wm8994_pdata *pdata = &control->pdata;
+ int drc = wm8994_get_drc(kcontrol->id.name);
+- int value = ucontrol->value.integer.value[0];
++ int value = ucontrol->value.enumerated.item[0];
+
+ if (drc < 0)
+ return drc;
+@@ -468,7 +468,7 @@ static int wm8994_put_retune_mobile_enum(struct snd_kcontrol *kcontrol,
+ struct wm8994 *control = wm8994->wm8994;
+ struct wm8994_pdata *pdata = &control->pdata;
+ int block = wm8994_get_retune_mobile_block(kcontrol->id.name);
+- int value = ucontrol->value.integer.value[0];
++ int value = ucontrol->value.enumerated.item[0];
+
+ if (block < 0)
+ return block;
+diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
+index d01c2095452f..431d94397219 100644
+--- a/sound/soc/codecs/wm_adsp.c
++++ b/sound/soc/codecs/wm_adsp.c
+@@ -248,7 +248,7 @@ static int wm_adsp_fw_get(struct snd_kcontrol *kcontrol,
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ struct wm_adsp *adsp = snd_soc_codec_get_drvdata(codec);
+
+- ucontrol->value.integer.value[0] = adsp[e->shift_l].fw;
++ ucontrol->value.enumerated.item[0] = adsp[e->shift_l].fw;
+
+ return 0;
+ }
+@@ -260,16 +260,16 @@ static int wm_adsp_fw_put(struct snd_kcontrol *kcontrol,
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ struct wm_adsp *adsp = snd_soc_codec_get_drvdata(codec);
+
+- if (ucontrol->value.integer.value[0] == adsp[e->shift_l].fw)
++ if (ucontrol->value.enumerated.item[0] == adsp[e->shift_l].fw)
+ return 0;
+
+- if (ucontrol->value.integer.value[0] >= WM_ADSP_NUM_FW)
++ if (ucontrol->value.enumerated.item[0] >= WM_ADSP_NUM_FW)
+ return -EINVAL;
+
+ if (adsp[e->shift_l].running)
+ return -EBUSY;
+
+- adsp[e->shift_l].fw = ucontrol->value.integer.value[0];
++ adsp[e->shift_l].fw = ucontrol->value.enumerated.item[0];
+
+ return 0;
+ }
+diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
+index b92ab40d2be6..5e8ccb0a7028 100644
+--- a/sound/soc/samsung/i2s.c
++++ b/sound/soc/samsung/i2s.c
+@@ -480,10 +480,11 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai,
+ unsigned int cdcon_mask = 1 << i2s_regs->cdclkcon_off;
+ unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off;
+ u32 mod, mask, val = 0;
++ unsigned long flags;
+
+- spin_lock(i2s->lock);
++ spin_lock_irqsave(i2s->lock, flags);
+ mod = readl(i2s->addr + I2SMOD);
+- spin_unlock(i2s->lock);
++ spin_unlock_irqrestore(i2s->lock, flags);
+
+ switch (clk_id) {
+ case SAMSUNG_I2S_OPCLK:
+@@ -574,11 +575,11 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai,
+ return -EINVAL;
+ }
+
+- spin_lock(i2s->lock);
++ spin_lock_irqsave(i2s->lock, flags);
+ mod = readl(i2s->addr + I2SMOD);
+ mod = (mod & ~mask) | val;
+ writel(mod, i2s->addr + I2SMOD);
+- spin_unlock(i2s->lock);
++ spin_unlock_irqrestore(i2s->lock, flags);
+
+ return 0;
+ }
+@@ -589,6 +590,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai,
+ struct i2s_dai *i2s = to_info(dai);
+ int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave;
+ u32 mod, tmp = 0;
++ unsigned long flags;
+
+ lrp_shift = i2s->variant_regs->lrp_off;
+ sdf_shift = i2s->variant_regs->sdf_off;
+@@ -648,7 +650,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai,
+ return -EINVAL;
+ }
+
+- spin_lock(i2s->lock);
++ spin_lock_irqsave(i2s->lock, flags);
+ mod = readl(i2s->addr + I2SMOD);
+ /*
+ * Don't change the I2S mode if any controller is active on this
+@@ -656,7 +658,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai,
+ */
+ if (any_active(i2s) &&
+ ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) {
+- spin_unlock(i2s->lock);
++ spin_unlock_irqrestore(i2s->lock, flags);
+ dev_err(&i2s->pdev->dev,
+ "%s:%d Other DAI busy\n", __func__, __LINE__);
+ return -EAGAIN;
+@@ -665,7 +667,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai,
+ mod &= ~(sdf_mask | lrp_rlow | mod_slave);
+ mod |= tmp;
+ writel(mod, i2s->addr + I2SMOD);
+- spin_unlock(i2s->lock);
++ spin_unlock_irqrestore(i2s->lock, flags);
+
+ return 0;
+ }
+@@ -675,6 +677,7 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
+ {
+ struct i2s_dai *i2s = to_info(dai);
+ u32 mod, mask = 0, val = 0;
++ unsigned long flags;
+
+ if (!is_secondary(i2s))
+ mask |= (MOD_DC2_EN | MOD_DC1_EN);
+@@ -743,11 +746,11 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
+ return -EINVAL;
+ }
+
+- spin_lock(i2s->lock);
++ spin_lock_irqsave(i2s->lock, flags);
+ mod = readl(i2s->addr + I2SMOD);
+ mod = (mod & ~mask) | val;
+ writel(mod, i2s->addr + I2SMOD);
+- spin_unlock(i2s->lock);
++ spin_unlock_irqrestore(i2s->lock, flags);
+
+ samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
+
+diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
+index b6c12dccb259..28df6adf362b 100644
+--- a/sound/soc/soc-dapm.c
++++ b/sound/soc/soc-dapm.c
+@@ -3324,7 +3324,7 @@ static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
+ {
+ struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
+
+- ucontrol->value.integer.value[0] = w->params_select;
++ ucontrol->value.enumerated.item[0] = w->params_select;
+
+ return 0;
+ }
+@@ -3338,13 +3338,13 @@ static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
+ if (w->power)
+ return -EBUSY;
+
+- if (ucontrol->value.integer.value[0] == w->params_select)
++ if (ucontrol->value.enumerated.item[0] == w->params_select)
+ return 0;
+
+- if (ucontrol->value.integer.value[0] >= w->num_params)
++ if (ucontrol->value.enumerated.item[0] >= w->num_params)
+ return -EINVAL;
+
+- w->params_select = ucontrol->value.integer.value[0];
++ w->params_select = ucontrol->value.enumerated.item[0];
+
+ return 0;
+ }
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-03-17 22:52 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-03-17 22:52 UTC (permalink / raw
To: gentoo-commits
commit: 57f73735ff7386b833f9793004b2a35de5cb2703
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Mar 17 22:52:12 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Mar 17 22:52:12 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=57f73735
Linux patch 4.1.20
0000_README | 4 +
1019_linux-4.1.20.patch | 3955 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 3959 insertions(+)
diff --git a/0000_README b/0000_README
index ad1d372..3e19785 100644
--- a/0000_README
+++ b/0000_README
@@ -119,6 +119,10 @@ Patch: 1018_linux-4.1.19.patch
From: http://www.kernel.org
Desc: Linux 4.1.19
+Patch: 1019_linux-4.1.20.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.20
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1019_linux-4.1.20.patch b/1019_linux-4.1.20.patch
new file mode 100644
index 0000000..75d3dea
--- /dev/null
+++ b/1019_linux-4.1.20.patch
@@ -0,0 +1,3955 @@
+diff --git a/Makefile b/Makefile
+index 06107f683bbe..39be1bbd373a 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 19
++SUBLEVEL = 20
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c
+index d503fbb787d3..88993cc95e8e 100644
+--- a/arch/arm/kvm/guest.c
++++ b/arch/arm/kvm/guest.c
+@@ -155,7 +155,7 @@ static int get_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
+ u64 val;
+
+ val = kvm_arm_timer_get_reg(vcpu, reg->id);
+- return copy_to_user(uaddr, &val, KVM_REG_SIZE(reg->id));
++ return copy_to_user(uaddr, &val, KVM_REG_SIZE(reg->id)) ? -EFAULT : 0;
+ }
+
+ static unsigned long num_core_regs(void)
+diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
+index 9535bd555d1d..d4e04d2237c4 100644
+--- a/arch/arm64/kvm/guest.c
++++ b/arch/arm64/kvm/guest.c
+@@ -184,7 +184,7 @@ static int get_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
+ u64 val;
+
+ val = kvm_arm_timer_get_reg(vcpu, reg->id);
+- return copy_to_user(uaddr, &val, KVM_REG_SIZE(reg->id));
++ return copy_to_user(uaddr, &val, KVM_REG_SIZE(reg->id)) ? -EFAULT : 0;
+ }
+
+ /**
+diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
+index 5f5f44edc77d..54923d6b7e16 100644
+--- a/arch/mips/kernel/traps.c
++++ b/arch/mips/kernel/traps.c
+@@ -693,15 +693,15 @@ static int simulate_sync(struct pt_regs *regs, unsigned int opcode)
+ asmlinkage void do_ov(struct pt_regs *regs)
+ {
+ enum ctx_state prev_state;
+- siginfo_t info;
++ siginfo_t info = {
++ .si_signo = SIGFPE,
++ .si_code = FPE_INTOVF,
++ .si_addr = (void __user *)regs->cp0_epc,
++ };
+
+ prev_state = exception_enter();
+ die_if_kernel("Integer overflow", regs);
+
+- info.si_code = FPE_INTOVF;
+- info.si_signo = SIGFPE;
+- info.si_errno = 0;
+- info.si_addr = (void __user *) regs->cp0_epc;
+ force_sig_info(SIGFPE, &info, current);
+ exception_exit(prev_state);
+ }
+@@ -877,7 +877,7 @@ out:
+ void do_trap_or_bp(struct pt_regs *regs, unsigned int code,
+ const char *str)
+ {
+- siginfo_t info;
++ siginfo_t info = { 0 };
+ char b[40];
+
+ #ifdef CONFIG_KGDB_LOW_LEVEL_TRAP
+@@ -905,7 +905,6 @@ void do_trap_or_bp(struct pt_regs *regs, unsigned int code,
+ else
+ info.si_code = FPE_INTOVF;
+ info.si_signo = SIGFPE;
+- info.si_errno = 0;
+ info.si_addr = (void __user *) regs->cp0_epc;
+ force_sig_info(SIGFPE, &info, current);
+ break;
+diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
+index 22ee0afc7d5d..ace4ed7d41c6 100644
+--- a/arch/mips/kvm/mips.c
++++ b/arch/mips/kvm/mips.c
+@@ -700,7 +700,7 @@ static int kvm_mips_get_reg(struct kvm_vcpu *vcpu,
+ } else if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U128) {
+ void __user *uaddr = (void __user *)(long)reg->addr;
+
+- return copy_to_user(uaddr, vs, 16);
++ return copy_to_user(uaddr, vs, 16) ? -EFAULT : 0;
+ } else {
+ return -EINVAL;
+ }
+@@ -730,7 +730,7 @@ static int kvm_mips_set_reg(struct kvm_vcpu *vcpu,
+ } else if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U128) {
+ void __user *uaddr = (void __user *)(long)reg->addr;
+
+- return copy_from_user(vs, uaddr, 16);
++ return copy_from_user(vs, uaddr, 16) ? -EFAULT : 0;
+ } else {
+ return -EINVAL;
+ }
+diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
+index 9585c81f755f..ce0b2b4075c7 100644
+--- a/arch/parisc/kernel/ptrace.c
++++ b/arch/parisc/kernel/ptrace.c
+@@ -269,14 +269,19 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+
+ long do_syscall_trace_enter(struct pt_regs *regs)
+ {
+- long ret = 0;
+-
+ /* Do the secure computing check first. */
+ secure_computing_strict(regs->gr[20]);
+
+ if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+- tracehook_report_syscall_entry(regs))
+- ret = -1L;
++ tracehook_report_syscall_entry(regs)) {
++ /*
++ * Tracing decided this syscall should not happen or the
++ * debugger stored an invalid system call number. Skip
++ * the system call and the system call restart handling.
++ */
++ regs->gr[20] = -1UL;
++ goto out;
++ }
+
+ #ifdef CONFIG_64BIT
+ if (!is_compat_task())
+@@ -290,7 +295,8 @@ long do_syscall_trace_enter(struct pt_regs *regs)
+ regs->gr[24] & 0xffffffff,
+ regs->gr[23] & 0xffffffff);
+
+- return ret ? : regs->gr[20];
++out:
++ return regs->gr[20];
+ }
+
+ void do_syscall_trace_exit(struct pt_regs *regs)
+diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
+index 0b8d26d3ba43..02cf40c96fe3 100644
+--- a/arch/parisc/kernel/syscall.S
++++ b/arch/parisc/kernel/syscall.S
+@@ -343,7 +343,7 @@ tracesys_next:
+ #endif
+
+ comiclr,>>= __NR_Linux_syscalls, %r20, %r0
+- b,n .Lsyscall_nosys
++ b,n .Ltracesys_nosys
+
+ LDREGX %r20(%r19), %r19
+
+@@ -359,6 +359,9 @@ tracesys_next:
+ be 0(%sr7,%r19)
+ ldo R%tracesys_exit(%r2),%r2
+
++.Ltracesys_nosys:
++ ldo -ENOSYS(%r0),%r28 /* set errno */
++
+ /* Do *not* call this function on the gateway page, because it
+ makes a direct call to syscall_trace. */
+
+diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
+index c78ba51ae285..24b7e554db27 100644
+--- a/arch/s390/kernel/compat_signal.c
++++ b/arch/s390/kernel/compat_signal.c
+@@ -293,7 +293,7 @@ static int restore_sigregs_ext32(struct pt_regs *regs,
+
+ /* Restore high gprs from signal stack */
+ if (__copy_from_user(&gprs_high, &sregs_ext->gprs_high,
+- sizeof(&sregs_ext->gprs_high)))
++ sizeof(sregs_ext->gprs_high)))
+ return -EFAULT;
+ for (i = 0; i < NUM_GPRS; i++)
+ *(__u32 *)®s->gprs[i] = gprs_high[i];
+diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
+index d1daead5fcdd..adb3eaf8fe2a 100644
+--- a/arch/x86/kernel/acpi/sleep.c
++++ b/arch/x86/kernel/acpi/sleep.c
+@@ -16,6 +16,7 @@
+ #include <asm/cacheflush.h>
+ #include <asm/realmode.h>
+
++#include <linux/ftrace.h>
+ #include "../../realmode/rm/wakeup.h"
+ #include "sleep.h"
+
+@@ -107,7 +108,13 @@ int x86_acpi_suspend_lowlevel(void)
+ saved_magic = 0x123456789abcdef0L;
+ #endif /* CONFIG_64BIT */
+
++ /*
++ * Pause/unpause graph tracing around do_suspend_lowlevel as it has
++ * inconsistent call/return info after it jumps to the wakeup vector.
++ */
++ pause_graph_tracing();
+ do_suspend_lowlevel();
++ unpause_graph_tracing();
+ return 0;
+ }
+
+diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
+index 6e6d115fe9b5..d537c9badeb6 100644
+--- a/arch/x86/kvm/paging_tmpl.h
++++ b/arch/x86/kvm/paging_tmpl.h
+@@ -257,7 +257,7 @@ static int FNAME(update_accessed_dirty_bits)(struct kvm_vcpu *vcpu,
+ return ret;
+
+ mark_page_dirty(vcpu->kvm, table_gfn);
+- walker->ptes[level] = pte;
++ walker->ptes[level - 1] = pte;
+ }
+ return 0;
+ }
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index fed4c84eac44..41a3fb4ed346 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -2117,6 +2117,8 @@ static void accumulate_steal_time(struct kvm_vcpu *vcpu)
+
+ static void record_steal_time(struct kvm_vcpu *vcpu)
+ {
++ accumulate_steal_time(vcpu);
++
+ if (!(vcpu->arch.st.msr_val & KVM_MSR_ENABLED))
+ return;
+
+@@ -2262,12 +2264,6 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+ if (!(data & KVM_MSR_ENABLED))
+ break;
+
+- vcpu->arch.st.last_steal = current->sched_info.run_delay;
+-
+- preempt_disable();
+- accumulate_steal_time(vcpu);
+- preempt_enable();
+-
+ kvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu);
+
+ break;
+@@ -2966,7 +2962,6 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
+ vcpu->cpu = cpu;
+ }
+
+- accumulate_steal_time(vcpu);
+ kvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu);
+ }
+
+@@ -6371,12 +6366,12 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
+ * KVM_DEBUGREG_WONT_EXIT again.
+ */
+ if (unlikely(vcpu->arch.switch_db_regs & KVM_DEBUGREG_WONT_EXIT)) {
+- int i;
+-
+ WARN_ON(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP);
+ kvm_x86_ops->sync_dirty_debug_regs(vcpu);
+- for (i = 0; i < KVM_NR_DB_REGS; i++)
+- vcpu->arch.eff_db[i] = vcpu->arch.db[i];
++ kvm_update_dr0123(vcpu);
++ kvm_update_dr6(vcpu);
++ kvm_update_dr7(vcpu);
++ vcpu->arch.switch_db_regs &= ~KVM_DEBUGREG_RELOAD;
+ }
+
+ /*
+diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c
+index f738c61bc891..6a3c774eaff6 100644
+--- a/arch/x86/mm/mpx.c
++++ b/arch/x86/mm/mpx.c
+@@ -142,7 +142,7 @@ static int get_reg_offset(struct insn *insn, struct pt_regs *regs,
+ break;
+ }
+
+- if (regno > nr_registers) {
++ if (regno >= nr_registers) {
+ WARN_ONCE(1, "decoded an instruction with an invalid register");
+ return -EINVAL;
+ }
+diff --git a/drivers/android/binder.c b/drivers/android/binder.c
+index 6607f3c6ace1..f1a26d937d98 100644
+--- a/drivers/android/binder.c
++++ b/drivers/android/binder.c
+@@ -2074,7 +2074,7 @@ static int binder_thread_write(struct binder_proc *proc,
+ if (get_user(cookie, (binder_uintptr_t __user *)ptr))
+ return -EFAULT;
+
+- ptr += sizeof(void *);
++ ptr += sizeof(cookie);
+ list_for_each_entry(w, &proc->delivered_death, entry) {
+ struct binder_ref_death *tmp_death = container_of(w, struct binder_ref_death, work);
+
+diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
+index 666fd8a1500a..34825d63d483 100644
+--- a/drivers/ata/ahci.c
++++ b/drivers/ata/ahci.c
+@@ -332,6 +332,16 @@ static const struct pci_device_id ahci_pci_tbl[] = {
+ { PCI_VDEVICE(INTEL, 0x1f37), board_ahci_avn }, /* Avoton RAID */
+ { PCI_VDEVICE(INTEL, 0x1f3e), board_ahci_avn }, /* Avoton RAID */
+ { PCI_VDEVICE(INTEL, 0x1f3f), board_ahci_avn }, /* Avoton RAID */
++ { PCI_VDEVICE(INTEL, 0xa182), board_ahci }, /* Lewisburg AHCI*/
++ { PCI_VDEVICE(INTEL, 0xa202), board_ahci }, /* Lewisburg AHCI*/
++ { PCI_VDEVICE(INTEL, 0xa184), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa204), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa186), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa206), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa18e), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa20e), board_ahci }, /* Lewisburg RAID*/
+ { PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Wellsburg RAID */
+ { PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Wellsburg RAID */
+ { PCI_VDEVICE(INTEL, 0x8d02), board_ahci }, /* Wellsburg AHCI */
+@@ -362,6 +372,22 @@ static const struct pci_device_id ahci_pci_tbl[] = {
+ { PCI_VDEVICE(INTEL, 0xa105), board_ahci }, /* Sunrise Point-H RAID */
+ { PCI_VDEVICE(INTEL, 0xa107), board_ahci }, /* Sunrise Point-H RAID */
+ { PCI_VDEVICE(INTEL, 0xa10f), board_ahci }, /* Sunrise Point-H RAID */
++ { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Lewisburg AHCI*/
++ { PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa182), board_ahci }, /* Lewisburg AHCI*/
++ { PCI_VDEVICE(INTEL, 0xa184), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa186), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa18e), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa1d2), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa1d6), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa202), board_ahci }, /* Lewisburg AHCI*/
++ { PCI_VDEVICE(INTEL, 0xa204), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa206), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa20e), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa252), board_ahci }, /* Lewisburg RAID*/
++ { PCI_VDEVICE(INTEL, 0xa256), board_ahci }, /* Lewisburg RAID*/
+
+ /* JMicron 360/1/3/5/6, match class to avoid IDE function */
+ { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
+index 0d7f0da3a269..ae7cfcb562dc 100644
+--- a/drivers/ata/libata-scsi.c
++++ b/drivers/ata/libata-scsi.c
+@@ -675,19 +675,18 @@ static int ata_ioc32(struct ata_port *ap)
+ int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
+ int cmd, void __user *arg)
+ {
+- int val = -EINVAL, rc = -EINVAL;
++ unsigned long val;
++ int rc = -EINVAL;
+ unsigned long flags;
+
+ switch (cmd) {
+- case ATA_IOC_GET_IO32:
++ case HDIO_GET_32BIT:
+ spin_lock_irqsave(ap->lock, flags);
+ val = ata_ioc32(ap);
+ spin_unlock_irqrestore(ap->lock, flags);
+- if (copy_to_user(arg, &val, 1))
+- return -EFAULT;
+- return 0;
++ return put_user(val, (unsigned long __user *)arg);
+
+- case ATA_IOC_SET_IO32:
++ case HDIO_SET_32BIT:
+ val = (unsigned long) arg;
+ rc = 0;
+ spin_lock_irqsave(ap->lock, flags);
+diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
+index 035dacc93382..fd5c5f3370f6 100644
+--- a/drivers/gpu/drm/ast/ast_main.c
++++ b/drivers/gpu/drm/ast/ast_main.c
+@@ -227,7 +227,7 @@ static int ast_get_dram_info(struct drm_device *dev)
+ } while (ast_read32(ast, 0x10000) != 0x01);
+ data = ast_read32(ast, 0x10004);
+
+- if (data & 0x400)
++ if (data & 0x40)
+ ast->dram_bus_width = 16;
+ else
+ ast->dram_bus_width = 32;
+diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
+index 91764320c56f..a56eab7f0ab1 100644
+--- a/drivers/gpu/drm/radeon/radeon_pm.c
++++ b/drivers/gpu/drm/radeon/radeon_pm.c
+@@ -1079,12 +1079,6 @@ force:
+
+ /* update display watermarks based on new power state */
+ radeon_bandwidth_update(rdev);
+- /* update displays */
+- radeon_dpm_display_configuration_changed(rdev);
+-
+- rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
+- rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
+- rdev->pm.dpm.single_display = single_display;
+
+ /* wait for the rings to drain */
+ for (i = 0; i < RADEON_NUM_RINGS; i++) {
+@@ -1101,6 +1095,13 @@ force:
+
+ radeon_dpm_post_set_power_state(rdev);
+
++ /* update displays */
++ radeon_dpm_display_configuration_changed(rdev);
++
++ rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
++ rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
++ rdev->pm.dpm.single_display = single_display;
++
+ if (rdev->asic->dpm.force_performance_level) {
+ if (rdev->pm.dpm.thermal_active) {
+ enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level;
+diff --git a/drivers/hwmon/ads1015.c b/drivers/hwmon/ads1015.c
+index f155b8380481..2b3105c8aed3 100644
+--- a/drivers/hwmon/ads1015.c
++++ b/drivers/hwmon/ads1015.c
+@@ -126,7 +126,7 @@ static int ads1015_reg_to_mv(struct i2c_client *client, unsigned int channel,
+ struct ads1015_data *data = i2c_get_clientdata(client);
+ unsigned int pga = data->channel_data[channel].pga;
+ int fullscale = fullscale_table[pga];
+- const unsigned mask = data->id == ads1115 ? 0x7fff : 0x7ff0;
++ const int mask = data->id == ads1115 ? 0x7fff : 0x7ff0;
+
+ return DIV_ROUND_CLOSEST(reg * fullscale, mask);
+ }
+diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c
+index a3dae6d0082a..83ea8c8039fa 100644
+--- a/drivers/hwmon/gpio-fan.c
++++ b/drivers/hwmon/gpio-fan.c
+@@ -406,16 +406,11 @@ static int gpio_fan_get_cur_state(struct thermal_cooling_device *cdev,
+ unsigned long *state)
+ {
+ struct gpio_fan_data *fan_data = cdev->devdata;
+- int r;
+
+ if (!fan_data)
+ return -EINVAL;
+
+- r = get_fan_speed_index(fan_data);
+- if (r < 0)
+- return r;
+-
+- *state = r;
++ *state = fan_data->speed_index;
+ return 0;
+ }
+
+diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
+index 450ef5001a65..1750db0ef61c 100644
+--- a/drivers/iommu/amd_iommu_init.c
++++ b/drivers/iommu/amd_iommu_init.c
+@@ -227,6 +227,10 @@ static enum iommu_init_state init_state = IOMMU_START_STATE;
+ static int amd_iommu_enable_interrupts(void);
+ static int __init iommu_go_to_state(enum iommu_init_state state);
+
++static int iommu_pc_get_set_reg_val(struct amd_iommu *iommu,
++ u8 bank, u8 cntr, u8 fxn,
++ u64 *value, bool is_write);
++
+ static inline void update_last_devid(u16 devid)
+ {
+ if (devid > amd_iommu_last_bdf)
+@@ -1066,6 +1070,34 @@ static void amd_iommu_erratum_746_workaround(struct amd_iommu *iommu)
+ }
+
+ /*
++ * Family15h Model 30h-3fh (IOMMU Mishandles ATS Write Permission)
++ * Workaround:
++ * BIOS should enable ATS write permission check by setting
++ * L2_DEBUG_3[AtsIgnoreIWDis](D0F2xF4_x47[0]) = 1b
++ */
++static void amd_iommu_ats_write_check_workaround(struct amd_iommu *iommu)
++{
++ u32 value;
++
++ if ((boot_cpu_data.x86 != 0x15) ||
++ (boot_cpu_data.x86_model < 0x30) ||
++ (boot_cpu_data.x86_model > 0x3f))
++ return;
++
++ /* Test L2_DEBUG_3[AtsIgnoreIWDis] == 1 */
++ value = iommu_read_l2(iommu, 0x47);
++
++ if (value & BIT(0))
++ return;
++
++ /* Set L2_DEBUG_3[AtsIgnoreIWDis] = 1 */
++ iommu_write_l2(iommu, 0x47, value | BIT(0));
++
++ pr_info("AMD-Vi: Applying ATS write check workaround for IOMMU at %s\n",
++ dev_name(&iommu->dev->dev));
++}
++
++/*
+ * This function clues the initialization function for one IOMMU
+ * together and also allocates the command buffer and programs the
+ * hardware. It does NOT enable the IOMMU. This is done afterwards.
+@@ -1192,8 +1224,8 @@ static void init_iommu_perf_ctr(struct amd_iommu *iommu)
+ amd_iommu_pc_present = true;
+
+ /* Check if the performance counters can be written to */
+- if ((0 != amd_iommu_pc_get_set_reg_val(0, 0, 0, 0, &val, true)) ||
+- (0 != amd_iommu_pc_get_set_reg_val(0, 0, 0, 0, &val2, false)) ||
++ if ((0 != iommu_pc_get_set_reg_val(iommu, 0, 0, 0, &val, true)) ||
++ (0 != iommu_pc_get_set_reg_val(iommu, 0, 0, 0, &val2, false)) ||
+ (val != val2)) {
+ pr_err("AMD-Vi: Unable to write to IOMMU perf counter.\n");
+ amd_iommu_pc_present = false;
+@@ -1339,6 +1371,7 @@ static int iommu_init_pci(struct amd_iommu *iommu)
+ }
+
+ amd_iommu_erratum_746_workaround(iommu);
++ amd_iommu_ats_write_check_workaround(iommu);
+
+ iommu->iommu_dev = iommu_device_create(&iommu->dev->dev, iommu,
+ amd_iommu_groups, "ivhd%d",
+@@ -2362,22 +2395,15 @@ u8 amd_iommu_pc_get_max_counters(u16 devid)
+ }
+ EXPORT_SYMBOL(amd_iommu_pc_get_max_counters);
+
+-int amd_iommu_pc_get_set_reg_val(u16 devid, u8 bank, u8 cntr, u8 fxn,
++static int iommu_pc_get_set_reg_val(struct amd_iommu *iommu,
++ u8 bank, u8 cntr, u8 fxn,
+ u64 *value, bool is_write)
+ {
+- struct amd_iommu *iommu;
+ u32 offset;
+ u32 max_offset_lim;
+
+- /* Make sure the IOMMU PC resource is available */
+- if (!amd_iommu_pc_present)
+- return -ENODEV;
+-
+- /* Locate the iommu associated with the device ID */
+- iommu = amd_iommu_rlookup_table[devid];
+-
+ /* Check for valid iommu and pc register indexing */
+- if (WARN_ON((iommu == NULL) || (fxn > 0x28) || (fxn & 7)))
++ if (WARN_ON((fxn > 0x28) || (fxn & 7)))
+ return -ENODEV;
+
+ offset = (u32)(((0x40|bank) << 12) | (cntr << 8) | fxn);
+@@ -2401,3 +2427,16 @@ int amd_iommu_pc_get_set_reg_val(u16 devid, u8 bank, u8 cntr, u8 fxn,
+ return 0;
+ }
+ EXPORT_SYMBOL(amd_iommu_pc_get_set_reg_val);
++
++int amd_iommu_pc_get_set_reg_val(u16 devid, u8 bank, u8 cntr, u8 fxn,
++ u64 *value, bool is_write)
++{
++ struct amd_iommu *iommu = amd_iommu_rlookup_table[devid];
++
++ /* Make sure the IOMMU PC resource is available */
++ if (!amd_iommu_pc_present || iommu == NULL)
++ return -ENODEV;
++
++ return iommu_pc_get_set_reg_val(iommu, bank, cntr, fxn,
++ value, is_write);
++}
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index 8b72ceee0f61..62610aafaac7 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -1146,6 +1146,8 @@ static void dm_unprep_request(struct request *rq)
+
+ if (clone)
+ free_rq_clone(clone);
++ else if (!tio->md->queue->mq_ops)
++ free_rq_tio(tio);
+ }
+
+ /*
+diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
+index 60ffcf098bef..5f92ec23bb07 100644
+--- a/drivers/media/i2c/adv7604.c
++++ b/drivers/media/i2c/adv7604.c
+@@ -1911,10 +1911,9 @@ static int adv76xx_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
+ }
+
+ /* tx 5v detect */
+- tx_5v = io_read(sd, 0x70) & info->cable_det_mask;
++ tx_5v = irq_reg_0x70 & info->cable_det_mask;
+ if (tx_5v) {
+ v4l2_dbg(1, debug, sd, "%s: tx_5v: 0x%x\n", __func__, tx_5v);
+- io_write(sd, 0x71, tx_5v);
+ adv76xx_s_detect_tx_5v_ctrl(sd);
+ if (handled)
+ *handled = true;
+diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c
+index 2a1b6e037e1a..0134ba32a057 100644
+--- a/drivers/mtd/ubi/upd.c
++++ b/drivers/mtd/ubi/upd.c
+@@ -193,7 +193,7 @@ int ubi_start_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
+ vol->changing_leb = 1;
+ vol->ch_lnum = req->lnum;
+
+- vol->upd_buf = vmalloc(req->bytes);
++ vol->upd_buf = vmalloc(ALIGN((int)req->bytes, ubi->min_io_size));
+ if (!vol->upd_buf)
+ return -ENOMEM;
+
+diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
+index 866bac0ae7e9..339b0c5ce60c 100644
+--- a/drivers/net/can/usb/ems_usb.c
++++ b/drivers/net/can/usb/ems_usb.c
+@@ -117,6 +117,9 @@ MODULE_LICENSE("GPL v2");
+ */
+ #define EMS_USB_ARM7_CLOCK 8000000
+
++#define CPC_TX_QUEUE_TRIGGER_LOW 25
++#define CPC_TX_QUEUE_TRIGGER_HIGH 35
++
+ /*
+ * CAN-Message representation in a CPC_MSG. Message object type is
+ * CPC_MSG_TYPE_CAN_FRAME or CPC_MSG_TYPE_RTR_FRAME or
+@@ -278,6 +281,11 @@ static void ems_usb_read_interrupt_callback(struct urb *urb)
+ switch (urb->status) {
+ case 0:
+ dev->free_slots = dev->intr_in_buffer[1];
++ if(dev->free_slots > CPC_TX_QUEUE_TRIGGER_HIGH){
++ if (netif_queue_stopped(netdev)){
++ netif_wake_queue(netdev);
++ }
++ }
+ break;
+
+ case -ECONNRESET: /* unlink */
+@@ -529,8 +537,6 @@ static void ems_usb_write_bulk_callback(struct urb *urb)
+ /* Release context */
+ context->echo_index = MAX_TX_URBS;
+
+- if (netif_queue_stopped(netdev))
+- netif_wake_queue(netdev);
+ }
+
+ /*
+@@ -590,7 +596,7 @@ static int ems_usb_start(struct ems_usb *dev)
+ int err, i;
+
+ dev->intr_in_buffer[0] = 0;
+- dev->free_slots = 15; /* initial size */
++ dev->free_slots = 50; /* initial size */
+
+ for (i = 0; i < MAX_RX_URBS; i++) {
+ struct urb *urb = NULL;
+@@ -838,7 +844,7 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne
+
+ /* Slow down tx path */
+ if (atomic_read(&dev->active_tx_urbs) >= MAX_TX_URBS ||
+- dev->free_slots < 5) {
++ dev->free_slots < CPC_TX_QUEUE_TRIGGER_LOW) {
+ netif_stop_queue(netdev);
+ }
+ }
+diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+index 9779c1e5688c..90e8b662e44d 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
++++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+@@ -2797,6 +2797,10 @@ static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
+ struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+ int ret;
+
++ /* we don't support "match all" in the firmware */
++ if (!req->n_match_sets)
++ return -EOPNOTSUPP;
++
+ if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
+ ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
+ if (ret)
+diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
+index 7cfd2db02deb..914655e89677 100644
+--- a/drivers/pci/xen-pcifront.c
++++ b/drivers/pci/xen-pcifront.c
+@@ -52,7 +52,7 @@ struct pcifront_device {
+ };
+
+ struct pcifront_sd {
+- int domain;
++ struct pci_sysdata sd;
+ struct pcifront_device *pdev;
+ };
+
+@@ -66,7 +66,9 @@ static inline void pcifront_init_sd(struct pcifront_sd *sd,
+ unsigned int domain, unsigned int bus,
+ struct pcifront_device *pdev)
+ {
+- sd->domain = domain;
++ /* Because we do not expose that information via XenBus. */
++ sd->sd.node = first_online_node;
++ sd->sd.domain = domain;
+ sd->pdev = pdev;
+ }
+
+@@ -464,8 +466,8 @@ static int pcifront_scan_root(struct pcifront_device *pdev,
+ dev_info(&pdev->xdev->dev, "Creating PCI Frontend Bus %04x:%02x\n",
+ domain, bus);
+
+- bus_entry = kmalloc(sizeof(*bus_entry), GFP_KERNEL);
+- sd = kmalloc(sizeof(*sd), GFP_KERNEL);
++ bus_entry = kzalloc(sizeof(*bus_entry), GFP_KERNEL);
++ sd = kzalloc(sizeof(*sd), GFP_KERNEL);
+ if (!bus_entry || !sd) {
+ err = -ENOMEM;
+ goto err_out;
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 2e58279fab60..6f50e9d958de 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -4095,6 +4095,17 @@ reject:
+ return iscsit_add_reject(conn, ISCSI_REASON_BOOKMARK_NO_RESOURCES, buf);
+ }
+
++static bool iscsi_target_check_conn_state(struct iscsi_conn *conn)
++{
++ bool ret;
++
++ spin_lock_bh(&conn->state_lock);
++ ret = (conn->conn_state != TARG_CONN_STATE_LOGGED_IN);
++ spin_unlock_bh(&conn->state_lock);
++
++ return ret;
++}
++
+ int iscsi_target_rx_thread(void *arg)
+ {
+ int ret, rc;
+@@ -4112,7 +4123,7 @@ int iscsi_target_rx_thread(void *arg)
+ * incoming iscsi/tcp socket I/O, and/or failing the connection.
+ */
+ rc = wait_for_completion_interruptible(&conn->rx_login_comp);
+- if (rc < 0)
++ if (rc < 0 || iscsi_target_check_conn_state(conn))
+ return 0;
+
+ if (conn->conn_transport->transport_type == ISCSI_INFINIBAND) {
+diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
+index f9cde9141836..9a96f1712b7a 100644
+--- a/drivers/target/iscsi/iscsi_target_nego.c
++++ b/drivers/target/iscsi/iscsi_target_nego.c
+@@ -393,6 +393,7 @@ err:
+ if (login->login_complete) {
+ if (conn->rx_thread && conn->rx_thread_active) {
+ send_sig(SIGINT, conn->rx_thread, 1);
++ complete(&conn->rx_login_comp);
+ kthread_stop(conn->rx_thread);
+ }
+ if (conn->tx_thread && conn->tx_thread_active) {
+diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
+index 08aa7cc58694..57fd4e14d4eb 100644
+--- a/drivers/target/target_core_pr.c
++++ b/drivers/target/target_core_pr.c
+@@ -329,7 +329,7 @@ static int core_scsi3_pr_seq_non_holder(
+ * RESERVATION CONFLICT on some CDBs */
+
+ if (!se_sess->se_node_acl->device_list)
+- return;
++ return 0;
+
+ se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
+ /*
+diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
+index 733824e3825f..46b966d09af2 100644
+--- a/drivers/target/target_core_sbc.c
++++ b/drivers/target/target_core_sbc.c
+@@ -321,7 +321,8 @@ sbc_setup_write_same(struct se_cmd *cmd, unsigned char *flags, struct sbc_ops *o
+ return 0;
+ }
+
+-static sense_reason_t xdreadwrite_callback(struct se_cmd *cmd, bool success)
++static sense_reason_t xdreadwrite_callback(struct se_cmd *cmd, bool success,
++ int *post_ret)
+ {
+ unsigned char *buf, *addr;
+ struct scatterlist *sg;
+@@ -385,7 +386,8 @@ sbc_execute_rw(struct se_cmd *cmd)
+ cmd->data_direction);
+ }
+
+-static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success)
++static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success,
++ int *post_ret)
+ {
+ struct se_device *dev = cmd->se_dev;
+
+@@ -395,8 +397,10 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success)
+ * sent to the backend driver.
+ */
+ spin_lock_irq(&cmd->t_state_lock);
+- if ((cmd->transport_state & CMD_T_SENT) && !cmd->scsi_status)
++ if ((cmd->transport_state & CMD_T_SENT) && !cmd->scsi_status) {
+ cmd->se_cmd_flags |= SCF_COMPARE_AND_WRITE_POST;
++ *post_ret = 1;
++ }
+ spin_unlock_irq(&cmd->t_state_lock);
+
+ /*
+@@ -408,7 +412,8 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success)
+ return TCM_NO_SENSE;
+ }
+
+-static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool success)
++static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool success,
++ int *post_ret)
+ {
+ struct se_device *dev = cmd->se_dev;
+ struct scatterlist *write_sg = NULL, *sg;
+@@ -504,11 +509,11 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool succes
+
+ if (block_size < PAGE_SIZE) {
+ sg_set_page(&write_sg[i], m.page, block_size,
+- block_size);
++ m.piter.sg->offset + block_size);
+ } else {
+ sg_miter_next(&m);
+ sg_set_page(&write_sg[i], m.page, block_size,
+- 0);
++ m.piter.sg->offset);
+ }
+ len -= block_size;
+ i++;
+diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
+index adb8016955c4..ad48837ead42 100644
+--- a/drivers/target/target_core_tmr.c
++++ b/drivers/target/target_core_tmr.c
+@@ -78,16 +78,18 @@ void core_tmr_release_req(struct se_tmr_req *tmr)
+ kfree(tmr);
+ }
+
+-static void core_tmr_handle_tas_abort(
+- struct se_node_acl *tmr_nacl,
+- struct se_cmd *cmd,
+- int tas)
++static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
+ {
+- bool remove = true;
++ unsigned long flags;
++ bool remove = true, send_tas;
+ /*
+ * TASK ABORTED status (TAS) bit support
+ */
+- if ((tmr_nacl && (tmr_nacl != cmd->se_sess->se_node_acl)) && tas) {
++ spin_lock_irqsave(&cmd->t_state_lock, flags);
++ send_tas = (cmd->transport_state & CMD_T_TAS);
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++
++ if (send_tas) {
+ remove = false;
+ transport_send_task_abort(cmd);
+ }
+@@ -110,6 +112,47 @@ static int target_check_cdb_and_preempt(struct list_head *list,
+ return 1;
+ }
+
++static bool __target_check_io_state(struct se_cmd *se_cmd,
++ struct se_session *tmr_sess, int tas)
++{
++ struct se_session *sess = se_cmd->se_sess;
++
++ assert_spin_locked(&sess->sess_cmd_lock);
++ WARN_ON_ONCE(!irqs_disabled());
++ /*
++ * If command already reached CMD_T_COMPLETE state within
++ * target_complete_cmd() or CMD_T_FABRIC_STOP due to shutdown,
++ * this se_cmd has been passed to fabric driver and will
++ * not be aborted.
++ *
++ * Otherwise, obtain a local se_cmd->cmd_kref now for TMR
++ * ABORT_TASK + LUN_RESET for CMD_T_ABORTED processing as
++ * long as se_cmd->cmd_kref is still active unless zero.
++ */
++ spin_lock(&se_cmd->t_state_lock);
++ if (se_cmd->transport_state & (CMD_T_COMPLETE | CMD_T_FABRIC_STOP)) {
++ pr_debug("Attempted to abort io tag: %u already complete or"
++ " fabric stop, skipping\n",
++ se_cmd->se_tfo->get_task_tag(se_cmd));
++ spin_unlock(&se_cmd->t_state_lock);
++ return false;
++ }
++ if (sess->sess_tearing_down || se_cmd->cmd_wait_set) {
++ pr_debug("Attempted to abort io tag: %u already shutdown,"
++ " skipping\n", se_cmd->se_tfo->get_task_tag(se_cmd));
++ spin_unlock(&se_cmd->t_state_lock);
++ return false;
++ }
++ se_cmd->transport_state |= CMD_T_ABORTED;
++
++ if ((tmr_sess != se_cmd->se_sess) && tas)
++ se_cmd->transport_state |= CMD_T_TAS;
++
++ spin_unlock(&se_cmd->t_state_lock);
++
++ return kref_get_unless_zero(&se_cmd->cmd_kref);
++}
++
+ void core_tmr_abort_task(
+ struct se_device *dev,
+ struct se_tmr_req *tmr,
+@@ -136,25 +179,20 @@ void core_tmr_abort_task(
+ printk("ABORT_TASK: Found referenced %s task_tag: %u\n",
+ se_cmd->se_tfo->get_fabric_name(), ref_tag);
+
+- spin_lock(&se_cmd->t_state_lock);
+- if (se_cmd->transport_state & CMD_T_COMPLETE) {
+- printk("ABORT_TASK: ref_tag: %u already complete, skipping\n", ref_tag);
+- spin_unlock(&se_cmd->t_state_lock);
++ if (!__target_check_io_state(se_cmd, se_sess, 0)) {
+ spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
++ target_put_sess_cmd(se_cmd);
+ goto out;
+ }
+- se_cmd->transport_state |= CMD_T_ABORTED;
+- spin_unlock(&se_cmd->t_state_lock);
+
+ list_del_init(&se_cmd->se_cmd_list);
+- kref_get(&se_cmd->cmd_kref);
+ spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
+
+ cancel_work_sync(&se_cmd->work);
+ transport_wait_for_tasks(se_cmd);
+
+- target_put_sess_cmd(se_cmd);
+ transport_cmd_finish_abort(se_cmd, true);
++ target_put_sess_cmd(se_cmd);
+
+ printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for"
+ " ref_tag: %d\n", ref_tag);
+@@ -211,7 +249,8 @@ static void core_tmr_drain_tmr_list(
+
+ spin_lock(&sess->sess_cmd_lock);
+ spin_lock(&cmd->t_state_lock);
+- if (!(cmd->transport_state & CMD_T_ACTIVE)) {
++ if (!(cmd->transport_state & CMD_T_ACTIVE) ||
++ (cmd->transport_state & CMD_T_FABRIC_STOP)) {
+ spin_unlock(&cmd->t_state_lock);
+ spin_unlock(&sess->sess_cmd_lock);
+ continue;
+@@ -221,15 +260,22 @@ static void core_tmr_drain_tmr_list(
+ spin_unlock(&sess->sess_cmd_lock);
+ continue;
+ }
++ if (sess->sess_tearing_down || cmd->cmd_wait_set) {
++ spin_unlock(&cmd->t_state_lock);
++ spin_unlock(&sess->sess_cmd_lock);
++ continue;
++ }
+ cmd->transport_state |= CMD_T_ABORTED;
+ spin_unlock(&cmd->t_state_lock);
+
+ rc = kref_get_unless_zero(&cmd->cmd_kref);
+- spin_unlock(&sess->sess_cmd_lock);
+ if (!rc) {
+ printk("LUN_RESET TMR: non-zero kref_get_unless_zero\n");
++ spin_unlock(&sess->sess_cmd_lock);
+ continue;
+ }
++ spin_unlock(&sess->sess_cmd_lock);
++
+ list_move_tail(&tmr_p->tmr_list, &drain_tmr_list);
+ }
+ spin_unlock_irqrestore(&dev->se_tmr_lock, flags);
+@@ -254,13 +300,15 @@ static void core_tmr_drain_tmr_list(
+ static void core_tmr_drain_state_list(
+ struct se_device *dev,
+ struct se_cmd *prout_cmd,
+- struct se_node_acl *tmr_nacl,
++ struct se_session *tmr_sess,
+ int tas,
+ struct list_head *preempt_and_abort_list)
+ {
+ LIST_HEAD(drain_task_list);
++ struct se_session *sess;
+ struct se_cmd *cmd, *next;
+ unsigned long flags;
++ int rc;
+
+ /*
+ * Complete outstanding commands with TASK_ABORTED SAM status.
+@@ -299,6 +347,16 @@ static void core_tmr_drain_state_list(
+ if (prout_cmd == cmd)
+ continue;
+
++ sess = cmd->se_sess;
++ if (WARN_ON_ONCE(!sess))
++ continue;
++
++ spin_lock(&sess->sess_cmd_lock);
++ rc = __target_check_io_state(cmd, tmr_sess, tas);
++ spin_unlock(&sess->sess_cmd_lock);
++ if (!rc)
++ continue;
++
+ list_move_tail(&cmd->state_list, &drain_task_list);
+ cmd->state_active = false;
+ }
+@@ -306,7 +364,7 @@ static void core_tmr_drain_state_list(
+
+ while (!list_empty(&drain_task_list)) {
+ cmd = list_entry(drain_task_list.next, struct se_cmd, state_list);
+- list_del(&cmd->state_list);
++ list_del_init(&cmd->state_list);
+
+ pr_debug("LUN_RESET: %s cmd: %p"
+ " ITT/CmdSN: 0x%08x/0x%08x, i_state: %d, t_state: %d"
+@@ -330,16 +388,11 @@ static void core_tmr_drain_state_list(
+ * loop above, but we do it down here given that
+ * cancel_work_sync may block.
+ */
+- if (cmd->t_state == TRANSPORT_COMPLETE)
+- cancel_work_sync(&cmd->work);
+-
+- spin_lock_irqsave(&cmd->t_state_lock, flags);
+- target_stop_cmd(cmd, &flags);
+-
+- cmd->transport_state |= CMD_T_ABORTED;
+- spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ cancel_work_sync(&cmd->work);
++ transport_wait_for_tasks(cmd);
+
+- core_tmr_handle_tas_abort(tmr_nacl, cmd, tas);
++ core_tmr_handle_tas_abort(cmd, tas);
++ target_put_sess_cmd(cmd);
+ }
+ }
+
+@@ -351,6 +404,7 @@ int core_tmr_lun_reset(
+ {
+ struct se_node_acl *tmr_nacl = NULL;
+ struct se_portal_group *tmr_tpg = NULL;
++ struct se_session *tmr_sess = NULL;
+ int tas;
+ /*
+ * TASK_ABORTED status bit, this is configurable via ConfigFS
+@@ -369,8 +423,9 @@ int core_tmr_lun_reset(
+ * or struct se_device passthrough..
+ */
+ if (tmr && tmr->task_cmd && tmr->task_cmd->se_sess) {
+- tmr_nacl = tmr->task_cmd->se_sess->se_node_acl;
+- tmr_tpg = tmr->task_cmd->se_sess->se_tpg;
++ tmr_sess = tmr->task_cmd->se_sess;
++ tmr_nacl = tmr_sess->se_node_acl;
++ tmr_tpg = tmr_sess->se_tpg;
+ if (tmr_nacl && tmr_tpg) {
+ pr_debug("LUN_RESET: TMR caller fabric: %s"
+ " initiator port %s\n",
+@@ -383,7 +438,7 @@ int core_tmr_lun_reset(
+ dev->transport->name, tas);
+
+ core_tmr_drain_tmr_list(dev, tmr, preempt_and_abort_list);
+- core_tmr_drain_state_list(dev, prout_cmd, tmr_nacl, tas,
++ core_tmr_drain_state_list(dev, prout_cmd, tmr_sess, tas,
+ preempt_and_abort_list);
+
+ /*
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index 3881504b40d8..be12b9d84052 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -555,9 +555,6 @@ void transport_deregister_session(struct se_session *se_sess)
+ }
+ EXPORT_SYMBOL(transport_deregister_session);
+
+-/*
+- * Called with cmd->t_state_lock held.
+- */
+ static void target_remove_from_state_list(struct se_cmd *cmd)
+ {
+ struct se_device *dev = cmd->se_dev;
+@@ -582,10 +579,6 @@ static int transport_cmd_check_stop(struct se_cmd *cmd, bool remove_from_lists,
+ {
+ unsigned long flags;
+
+- spin_lock_irqsave(&cmd->t_state_lock, flags);
+- if (write_pending)
+- cmd->t_state = TRANSPORT_WRITE_PENDING;
+-
+ if (remove_from_lists) {
+ target_remove_from_state_list(cmd);
+
+@@ -595,6 +588,10 @@ static int transport_cmd_check_stop(struct se_cmd *cmd, bool remove_from_lists,
+ cmd->se_lun = NULL;
+ }
+
++ spin_lock_irqsave(&cmd->t_state_lock, flags);
++ if (write_pending)
++ cmd->t_state = TRANSPORT_WRITE_PENDING;
++
+ /*
+ * Determine if frontend context caller is requesting the stopping of
+ * this command for frontend exceptions.
+@@ -649,6 +646,8 @@ static void transport_lun_remove_cmd(struct se_cmd *cmd)
+
+ void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
+ {
++ bool ack_kref = (cmd->se_cmd_flags & SCF_ACK_KREF);
++
+ if (cmd->se_cmd_flags & SCF_SE_LUN_CMD)
+ transport_lun_remove_cmd(cmd);
+ /*
+@@ -660,7 +659,7 @@ void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
+
+ if (transport_cmd_check_stop_to_fabric(cmd))
+ return;
+- if (remove)
++ if (remove && ack_kref)
+ transport_put_cmd(cmd);
+ }
+
+@@ -728,7 +727,7 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
+ * Check for case where an explicit ABORT_TASK has been received
+ * and transport_wait_for_tasks() will be waiting for completion..
+ */
+- if (cmd->transport_state & CMD_T_ABORTED &&
++ if (cmd->transport_state & CMD_T_ABORTED ||
+ cmd->transport_state & CMD_T_STOP) {
+ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+ complete_all(&cmd->t_transport_stop_comp);
+@@ -1638,7 +1637,7 @@ bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags)
+ void transport_generic_request_failure(struct se_cmd *cmd,
+ sense_reason_t sense_reason)
+ {
+- int ret = 0;
++ int ret = 0, post_ret = 0;
+
+ pr_debug("-----[ Storage Engine Exception for cmd: %p ITT: 0x%08x"
+ " CDB: 0x%02x\n", cmd, cmd->se_tfo->get_task_tag(cmd),
+@@ -1661,7 +1660,7 @@ void transport_generic_request_failure(struct se_cmd *cmd,
+ */
+ if ((cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE) &&
+ cmd->transport_complete_callback)
+- cmd->transport_complete_callback(cmd, false);
++ cmd->transport_complete_callback(cmd, false, &post_ret);
+
+ switch (sense_reason) {
+ case TCM_NON_EXISTENT_LUN:
+@@ -1836,19 +1835,21 @@ static bool target_handle_task_attr(struct se_cmd *cmd)
+ return true;
+ }
+
++static int __transport_check_aborted_status(struct se_cmd *, int);
++
+ void target_execute_cmd(struct se_cmd *cmd)
+ {
+ /*
+- * If the received CDB has aleady been aborted stop processing it here.
+- */
+- if (transport_check_aborted_status(cmd, 1))
+- return;
+-
+- /*
+ * Determine if frontend context caller is requesting the stopping of
+ * this command for frontend exceptions.
++ *
++ * If the received CDB has aleady been aborted stop processing it here.
+ */
+ spin_lock_irq(&cmd->t_state_lock);
++ if (__transport_check_aborted_status(cmd, 1)) {
++ spin_unlock_irq(&cmd->t_state_lock);
++ return;
++ }
+ if (cmd->transport_state & CMD_T_STOP) {
+ pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08x\n",
+ __func__, __LINE__,
+@@ -2056,11 +2057,13 @@ static void target_complete_ok_work(struct work_struct *work)
+ */
+ if (cmd->transport_complete_callback) {
+ sense_reason_t rc;
++ bool caw = (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE);
++ bool zero_dl = !(cmd->data_length);
++ int post_ret = 0;
+
+- rc = cmd->transport_complete_callback(cmd, true);
+- if (!rc && !(cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE_POST)) {
+- if ((cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE) &&
+- !cmd->data_length)
++ rc = cmd->transport_complete_callback(cmd, true, &post_ret);
++ if (!rc && !post_ret) {
++ if (caw && zero_dl)
+ goto queue_rsp;
+
+ return;
+@@ -2209,20 +2212,14 @@ static inline void transport_free_pages(struct se_cmd *cmd)
+ }
+
+ /**
+- * transport_release_cmd - free a command
+- * @cmd: command to free
++ * transport_put_cmd - release a reference to a command
++ * @cmd: command to release
+ *
+- * This routine unconditionally frees a command, and reference counting
+- * or list removal must be done in the caller.
++ * This routine releases our reference to the command and frees it if possible.
+ */
+-static int transport_release_cmd(struct se_cmd *cmd)
++static int transport_put_cmd(struct se_cmd *cmd)
+ {
+ BUG_ON(!cmd->se_tfo);
+-
+- if (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
+- core_tmr_release_req(cmd->se_tmr_req);
+- if (cmd->t_task_cdb != cmd->__t_task_cdb)
+- kfree(cmd->t_task_cdb);
+ /*
+ * If this cmd has been setup with target_get_sess_cmd(), drop
+ * the kref and call ->release_cmd() in kref callback.
+@@ -2230,18 +2227,6 @@ static int transport_release_cmd(struct se_cmd *cmd)
+ return target_put_sess_cmd(cmd);
+ }
+
+-/**
+- * transport_put_cmd - release a reference to a command
+- * @cmd: command to release
+- *
+- * This routine releases our reference to the command and frees it if possible.
+- */
+-static int transport_put_cmd(struct se_cmd *cmd)
+-{
+- transport_free_pages(cmd);
+- return transport_release_cmd(cmd);
+-}
+-
+ void *transport_kmap_data_sg(struct se_cmd *cmd)
+ {
+ struct scatterlist *sg = cmd->t_data_sg;
+@@ -2437,34 +2422,59 @@ static void transport_write_pending_qf(struct se_cmd *cmd)
+ }
+ }
+
+-int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
++static bool
++__transport_wait_for_tasks(struct se_cmd *, bool, bool *, bool *,
++ unsigned long *flags);
++
++static void target_wait_free_cmd(struct se_cmd *cmd, bool *aborted, bool *tas)
+ {
+ unsigned long flags;
++
++ spin_lock_irqsave(&cmd->t_state_lock, flags);
++ __transport_wait_for_tasks(cmd, true, aborted, tas, &flags);
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++}
++
++int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
++{
+ int ret = 0;
++ bool aborted = false, tas = false;
+
+ if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD)) {
+ if (wait_for_tasks && (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB))
+- transport_wait_for_tasks(cmd);
++ target_wait_free_cmd(cmd, &aborted, &tas);
+
+- ret = transport_release_cmd(cmd);
++ if (!aborted || tas)
++ ret = transport_put_cmd(cmd);
+ } else {
+ if (wait_for_tasks)
+- transport_wait_for_tasks(cmd);
++ target_wait_free_cmd(cmd, &aborted, &tas);
+ /*
+ * Handle WRITE failure case where transport_generic_new_cmd()
+ * has already added se_cmd to state_list, but fabric has
+ * failed command before I/O submission.
+ */
+- if (cmd->state_active) {
+- spin_lock_irqsave(&cmd->t_state_lock, flags);
++ if (cmd->state_active)
+ target_remove_from_state_list(cmd);
+- spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+- }
+
+ if (cmd->se_lun)
+ transport_lun_remove_cmd(cmd);
+
+- ret = transport_put_cmd(cmd);
++ if (!aborted || tas)
++ ret = transport_put_cmd(cmd);
++ }
++ /*
++ * If the task has been internally aborted due to TMR ABORT_TASK
++ * or LUN_RESET, target_core_tmr.c is responsible for performing
++ * the remaining calls to target_put_sess_cmd(), and not the
++ * callers of this function.
++ */
++ if (aborted) {
++ pr_debug("Detected CMD_T_ABORTED for ITT: %u\n",
++ cmd->se_tfo->get_task_tag(cmd));
++ wait_for_completion(&cmd->cmd_wait_comp);
++ cmd->se_tfo->release_cmd(cmd);
++ ret = 1;
+ }
+ return ret;
+ }
+@@ -2504,25 +2514,45 @@ out:
+ }
+ EXPORT_SYMBOL(target_get_sess_cmd);
+
++static void target_free_cmd_mem(struct se_cmd *cmd)
++{
++ transport_free_pages(cmd);
++
++ if (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
++ core_tmr_release_req(cmd->se_tmr_req);
++ if (cmd->t_task_cdb != cmd->__t_task_cdb)
++ kfree(cmd->t_task_cdb);
++}
++
+ static void target_release_cmd_kref(struct kref *kref)
+ __releases(&se_cmd->se_sess->sess_cmd_lock)
+ {
+ struct se_cmd *se_cmd = container_of(kref, struct se_cmd, cmd_kref);
+ struct se_session *se_sess = se_cmd->se_sess;
++ bool fabric_stop;
+
+ if (list_empty(&se_cmd->se_cmd_list)) {
+ spin_unlock(&se_sess->sess_cmd_lock);
++ target_free_cmd_mem(se_cmd);
+ se_cmd->se_tfo->release_cmd(se_cmd);
+ return;
+ }
+- if (se_sess->sess_tearing_down && se_cmd->cmd_wait_set) {
++
++ spin_lock(&se_cmd->t_state_lock);
++ fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP);
++ spin_unlock(&se_cmd->t_state_lock);
++
++ if (se_cmd->cmd_wait_set || fabric_stop) {
++ list_del_init(&se_cmd->se_cmd_list);
+ spin_unlock(&se_sess->sess_cmd_lock);
++ target_free_cmd_mem(se_cmd);
+ complete(&se_cmd->cmd_wait_comp);
+ return;
+ }
+- list_del(&se_cmd->se_cmd_list);
++ list_del_init(&se_cmd->se_cmd_list);
+ spin_unlock(&se_sess->sess_cmd_lock);
+
++ target_free_cmd_mem(se_cmd);
+ se_cmd->se_tfo->release_cmd(se_cmd);
+ }
+
+@@ -2534,6 +2564,7 @@ int target_put_sess_cmd(struct se_cmd *se_cmd)
+ struct se_session *se_sess = se_cmd->se_sess;
+
+ if (!se_sess) {
++ target_free_cmd_mem(se_cmd);
+ se_cmd->se_tfo->release_cmd(se_cmd);
+ return 1;
+ }
+@@ -2551,6 +2582,7 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess)
+ {
+ struct se_cmd *se_cmd;
+ unsigned long flags;
++ int rc;
+
+ spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
+ if (se_sess->sess_tearing_down) {
+@@ -2560,8 +2592,15 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess)
+ se_sess->sess_tearing_down = 1;
+ list_splice_init(&se_sess->sess_cmd_list, &se_sess->sess_wait_list);
+
+- list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list)
+- se_cmd->cmd_wait_set = 1;
++ list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list) {
++ rc = kref_get_unless_zero(&se_cmd->cmd_kref);
++ if (rc) {
++ se_cmd->cmd_wait_set = 1;
++ spin_lock(&se_cmd->t_state_lock);
++ se_cmd->transport_state |= CMD_T_FABRIC_STOP;
++ spin_unlock(&se_cmd->t_state_lock);
++ }
++ }
+
+ spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
+ }
+@@ -2574,15 +2613,25 @@ void target_wait_for_sess_cmds(struct se_session *se_sess)
+ {
+ struct se_cmd *se_cmd, *tmp_cmd;
+ unsigned long flags;
++ bool tas;
+
+ list_for_each_entry_safe(se_cmd, tmp_cmd,
+ &se_sess->sess_wait_list, se_cmd_list) {
+- list_del(&se_cmd->se_cmd_list);
++ list_del_init(&se_cmd->se_cmd_list);
+
+ pr_debug("Waiting for se_cmd: %p t_state: %d, fabric state:"
+ " %d\n", se_cmd, se_cmd->t_state,
+ se_cmd->se_tfo->get_cmd_state(se_cmd));
+
++ spin_lock_irqsave(&se_cmd->t_state_lock, flags);
++ tas = (se_cmd->transport_state & CMD_T_TAS);
++ spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
++
++ if (!target_put_sess_cmd(se_cmd)) {
++ if (tas)
++ target_put_sess_cmd(se_cmd);
++ }
++
+ wait_for_completion(&se_cmd->cmd_wait_comp);
+ pr_debug("After cmd_wait_comp: se_cmd: %p t_state: %d"
+ " fabric state: %d\n", se_cmd, se_cmd->t_state,
+@@ -2625,34 +2674,38 @@ int transport_clear_lun_ref(struct se_lun *lun)
+ return 0;
+ }
+
+-/**
+- * transport_wait_for_tasks - wait for completion to occur
+- * @cmd: command to wait
+- *
+- * Called from frontend fabric context to wait for storage engine
+- * to pause and/or release frontend generated struct se_cmd.
+- */
+-bool transport_wait_for_tasks(struct se_cmd *cmd)
++static bool
++__transport_wait_for_tasks(struct se_cmd *cmd, bool fabric_stop,
++ bool *aborted, bool *tas, unsigned long *flags)
++ __releases(&cmd->t_state_lock)
++ __acquires(&cmd->t_state_lock)
+ {
+- unsigned long flags;
+
+- spin_lock_irqsave(&cmd->t_state_lock, flags);
++ assert_spin_locked(&cmd->t_state_lock);
++ WARN_ON_ONCE(!irqs_disabled());
++
++ if (fabric_stop)
++ cmd->transport_state |= CMD_T_FABRIC_STOP;
++
++ if (cmd->transport_state & CMD_T_ABORTED)
++ *aborted = true;
++
++ if (cmd->transport_state & CMD_T_TAS)
++ *tas = true;
++
+ if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD) &&
+- !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
+- spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB))
+ return false;
+- }
+
+ if (!(cmd->se_cmd_flags & SCF_SUPPORTED_SAM_OPCODE) &&
+- !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
+- spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB))
+ return false;
+- }
+
+- if (!(cmd->transport_state & CMD_T_ACTIVE)) {
+- spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ if (!(cmd->transport_state & CMD_T_ACTIVE))
++ return false;
++
++ if (fabric_stop && *aborted)
+ return false;
+- }
+
+ cmd->transport_state |= CMD_T_STOP;
+
+@@ -2661,20 +2714,37 @@ bool transport_wait_for_tasks(struct se_cmd *cmd)
+ cmd, cmd->se_tfo->get_task_tag(cmd),
+ cmd->se_tfo->get_cmd_state(cmd), cmd->t_state);
+
+- spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ spin_unlock_irqrestore(&cmd->t_state_lock, *flags);
+
+ wait_for_completion(&cmd->t_transport_stop_comp);
+
+- spin_lock_irqsave(&cmd->t_state_lock, flags);
++ spin_lock_irqsave(&cmd->t_state_lock, *flags);
+ cmd->transport_state &= ~(CMD_T_ACTIVE | CMD_T_STOP);
+
+ pr_debug("wait_for_tasks: Stopped wait_for_completion("
+ "&cmd->t_transport_stop_comp) for ITT: 0x%08x\n",
+ cmd->se_tfo->get_task_tag(cmd));
+
++ return true;
++}
++
++/**
++ * transport_wait_for_tasks - wait for completion to occur
++ * @cmd: command to wait
++ *
++ * Called from frontend fabric context to wait for storage engine
++ * to pause and/or release frontend generated struct se_cmd.
++ */
++bool transport_wait_for_tasks(struct se_cmd *cmd)
++{
++ unsigned long flags;
++ bool ret, aborted = false, tas = false;
++
++ spin_lock_irqsave(&cmd->t_state_lock, flags);
++ ret = __transport_wait_for_tasks(cmd, false, &aborted, &tas, &flags);
+ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+
+- return true;
++ return ret;
+ }
+ EXPORT_SYMBOL(transport_wait_for_tasks);
+
+@@ -2960,8 +3030,13 @@ after_reason:
+ }
+ EXPORT_SYMBOL(transport_send_check_condition_and_sense);
+
+-int transport_check_aborted_status(struct se_cmd *cmd, int send_status)
++static int __transport_check_aborted_status(struct se_cmd *cmd, int send_status)
++ __releases(&cmd->t_state_lock)
++ __acquires(&cmd->t_state_lock)
+ {
++ assert_spin_locked(&cmd->t_state_lock);
++ WARN_ON_ONCE(!irqs_disabled());
++
+ if (!(cmd->transport_state & CMD_T_ABORTED))
+ return 0;
+
+@@ -2969,19 +3044,37 @@ int transport_check_aborted_status(struct se_cmd *cmd, int send_status)
+ * If cmd has been aborted but either no status is to be sent or it has
+ * already been sent, just return
+ */
+- if (!send_status || !(cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS))
++ if (!send_status || !(cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS)) {
++ if (send_status)
++ cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS;
+ return 1;
++ }
+
+- pr_debug("Sending delayed SAM_STAT_TASK_ABORTED status for CDB: 0x%02x ITT: 0x%08x\n",
+- cmd->t_task_cdb[0], cmd->se_tfo->get_task_tag(cmd));
++ pr_debug("Sending delayed SAM_STAT_TASK_ABORTED status for CDB:"
++ " 0x%02x ITT: 0x%08x\n", cmd->t_task_cdb[0],
++ cmd->se_tfo->get_task_tag(cmd));
+
+ cmd->se_cmd_flags &= ~SCF_SEND_DELAYED_TAS;
+ cmd->scsi_status = SAM_STAT_TASK_ABORTED;
+ trace_target_cmd_complete(cmd);
++
++ spin_unlock_irq(&cmd->t_state_lock);
+ cmd->se_tfo->queue_status(cmd);
++ spin_lock_irq(&cmd->t_state_lock);
+
+ return 1;
+ }
++
++int transport_check_aborted_status(struct se_cmd *cmd, int send_status)
++{
++ int ret;
++
++ spin_lock_irq(&cmd->t_state_lock);
++ ret = __transport_check_aborted_status(cmd, send_status);
++ spin_unlock_irq(&cmd->t_state_lock);
++
++ return ret;
++}
+ EXPORT_SYMBOL(transport_check_aborted_status);
+
+ void transport_send_task_abort(struct se_cmd *cmd)
+@@ -3003,11 +3096,17 @@ void transport_send_task_abort(struct se_cmd *cmd)
+ */
+ if (cmd->data_direction == DMA_TO_DEVICE) {
+ if (cmd->se_tfo->write_pending_status(cmd) != 0) {
+- cmd->transport_state |= CMD_T_ABORTED;
++ spin_lock_irqsave(&cmd->t_state_lock, flags);
++ if (cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS) {
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ goto send_abort;
++ }
+ cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS;
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+ return;
+ }
+ }
++send_abort:
+ cmd->scsi_status = SAM_STAT_TASK_ABORTED;
+
+ transport_lun_remove_cmd(cmd);
+diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c
+index ad6c87a4653c..fbc6285905a6 100644
+--- a/drivers/usb/chipidea/otg.c
++++ b/drivers/usb/chipidea/otg.c
+@@ -118,7 +118,7 @@ static void ci_otg_work(struct work_struct *work)
+ int ci_hdrc_otg_init(struct ci_hdrc *ci)
+ {
+ INIT_WORK(&ci->work, ci_otg_work);
+- ci->wq = create_singlethread_workqueue("ci_otg");
++ ci->wq = create_freezable_workqueue("ci_otg");
+ if (!ci->wq) {
+ dev_err(ci->dev, "can't create workqueue\n");
+ return -ENODEV;
+diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
+index 173edd4ca20e..be245d073f15 100644
+--- a/drivers/usb/dwc3/core.h
++++ b/drivers/usb/dwc3/core.h
+@@ -829,7 +829,6 @@ struct dwc3 {
+ unsigned pullups_connected:1;
+ unsigned resize_fifos:1;
+ unsigned setup_packet_pending:1;
+- unsigned start_config_issued:1;
+ unsigned three_stage_setup:1;
+ unsigned usb3_lpm_capable:1;
+
+diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
+index 06ecd1e6871c..00f2c456f94b 100644
+--- a/drivers/usb/dwc3/ep0.c
++++ b/drivers/usb/dwc3/ep0.c
+@@ -545,7 +545,6 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
+ int ret;
+ u32 reg;
+
+- dwc->start_config_issued = false;
+ cfg = le16_to_cpu(ctrl->wValue);
+
+ switch (state) {
+@@ -727,10 +726,6 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ISOCH_DELAY");
+ ret = dwc3_ep0_set_isoch_delay(dwc, ctrl);
+ break;
+- case USB_REQ_SET_INTERFACE:
+- dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_INTERFACE");
+- dwc->start_config_issued = false;
+- /* Fall through */
+ default:
+ dwc3_trace(trace_dwc3_ep0, "Forwarding to gadget driver");
+ ret = dwc3_ep0_delegate_req(dwc, ctrl);
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index 6fbf461d523c..b886226be241 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -388,24 +388,66 @@ static void dwc3_free_trb_pool(struct dwc3_ep *dep)
+ dep->trb_pool_dma = 0;
+ }
+
++static int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep);
++
++/**
++ * dwc3_gadget_start_config - Configure EP resources
++ * @dwc: pointer to our controller context structure
++ * @dep: endpoint that is being enabled
++ *
++ * The assignment of transfer resources cannot perfectly follow the
++ * data book due to the fact that the controller driver does not have
++ * all knowledge of the configuration in advance. It is given this
++ * information piecemeal by the composite gadget framework after every
++ * SET_CONFIGURATION and SET_INTERFACE. Trying to follow the databook
++ * programming model in this scenario can cause errors. For two
++ * reasons:
++ *
++ * 1) The databook says to do DEPSTARTCFG for every SET_CONFIGURATION
++ * and SET_INTERFACE (8.1.5). This is incorrect in the scenario of
++ * multiple interfaces.
++ *
++ * 2) The databook does not mention doing more DEPXFERCFG for new
++ * endpoint on alt setting (8.1.6).
++ *
++ * The following simplified method is used instead:
++ *
++ * All hardware endpoints can be assigned a transfer resource and this
++ * setting will stay persistent until either a core reset or
++ * hibernation. So whenever we do a DEPSTARTCFG(0) we can go ahead and
++ * do DEPXFERCFG for every hardware endpoint as well. We are
++ * guaranteed that there are as many transfer resources as endpoints.
++ *
++ * This function is called for each endpoint when it is being enabled
++ * but is triggered only when called for EP0-out, which always happens
++ * first, and which should only happen in one of the above conditions.
++ */
+ static int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep)
+ {
+ struct dwc3_gadget_ep_cmd_params params;
+ u32 cmd;
++ int i;
++ int ret;
++
++ if (dep->number)
++ return 0;
+
+ memset(¶ms, 0x00, sizeof(params));
++ cmd = DWC3_DEPCMD_DEPSTARTCFG;
+
+- if (dep->number != 1) {
+- cmd = DWC3_DEPCMD_DEPSTARTCFG;
+- /* XferRscIdx == 0 for ep0 and 2 for the remaining */
+- if (dep->number > 1) {
+- if (dwc->start_config_issued)
+- return 0;
+- dwc->start_config_issued = true;
+- cmd |= DWC3_DEPCMD_PARAM(2);
+- }
++ ret = dwc3_send_gadget_ep_cmd(dwc, 0, cmd, ¶ms);
++ if (ret)
++ return ret;
+
+- return dwc3_send_gadget_ep_cmd(dwc, 0, cmd, ¶ms);
++ for (i = 0; i < DWC3_ENDPOINTS_NUM; i++) {
++ struct dwc3_ep *dep = dwc->eps[i];
++
++ if (!dep)
++ continue;
++
++ ret = dwc3_gadget_set_xfer_resource(dwc, dep);
++ if (ret)
++ return ret;
+ }
+
+ return 0;
+@@ -519,10 +561,6 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
+ struct dwc3_trb *trb_st_hw;
+ struct dwc3_trb *trb_link;
+
+- ret = dwc3_gadget_set_xfer_resource(dwc, dep);
+- if (ret)
+- return ret;
+-
+ dep->endpoint.desc = desc;
+ dep->comp_desc = comp_desc;
+ dep->type = usb_endpoint_type(desc);
+@@ -1589,8 +1627,6 @@ static int dwc3_gadget_start(struct usb_gadget *g,
+ }
+ dwc3_writel(dwc->regs, DWC3_DCFG, reg);
+
+- dwc->start_config_issued = false;
+-
+ /* Start with SuperSpeed Default */
+ dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
+
+@@ -2167,7 +2203,6 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+ dwc3_disconnect_gadget(dwc);
+- dwc->start_config_issued = false;
+
+ dwc->gadget.speed = USB_SPEED_UNKNOWN;
+ dwc->setup_packet_pending = false;
+@@ -2218,7 +2253,6 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
+
+ dwc3_stop_active_transfers(dwc);
+ dwc3_clear_stall_all_ep(dwc);
+- dwc->start_config_issued = false;
+
+ /* Reset device address to zero */
+ reg = dwc3_readl(dwc->regs, DWC3_DCFG);
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index 1dd9919081f8..7a76fe4c2f9e 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -162,6 +162,9 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */
+ { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
+ { USB_DEVICE(0x18EF, 0xE025) }, /* ELV Marble Sound Board 1 */
++ { USB_DEVICE(0x1901, 0x0190) }, /* GE B850 CP2105 Recorder interface */
++ { USB_DEVICE(0x1901, 0x0193) }, /* GE B650 CP2104 PMC interface */
++ { USB_DEVICE(0x19CF, 0x3000) }, /* Parrot NMEA GPS Flight Recorder */
+ { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */
+ { USB_DEVICE(0x1B1C, 0x1C00) }, /* Corsair USB Dongle */
+ { USB_DEVICE(0x1BA4, 0x0002) }, /* Silicon Labs 358x factory default */
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 88540596973f..ce3d6af977b7 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -273,6 +273,7 @@ static void option_instat_callback(struct urb *urb);
+ #define TELIT_PRODUCT_UE910_V2 0x1012
+ #define TELIT_PRODUCT_LE922_USBCFG0 0x1042
+ #define TELIT_PRODUCT_LE922_USBCFG3 0x1043
++#define TELIT_PRODUCT_LE922_USBCFG5 0x1045
+ #define TELIT_PRODUCT_LE920 0x1200
+ #define TELIT_PRODUCT_LE910 0x1201
+
+@@ -318,6 +319,7 @@ static void option_instat_callback(struct urb *urb);
+ #define TOSHIBA_PRODUCT_G450 0x0d45
+
+ #define ALINK_VENDOR_ID 0x1e0e
++#define SIMCOM_PRODUCT_SIM7100E 0x9001 /* Yes, ALINK_VENDOR_ID */
+ #define ALINK_PRODUCT_PH300 0x9100
+ #define ALINK_PRODUCT_3GU 0x9200
+
+@@ -610,6 +612,10 @@ static const struct option_blacklist_info zte_1255_blacklist = {
+ .reserved = BIT(3) | BIT(4),
+ };
+
++static const struct option_blacklist_info simcom_sim7100e_blacklist = {
++ .reserved = BIT(5) | BIT(6),
++};
++
+ static const struct option_blacklist_info telit_le910_blacklist = {
+ .sendsetup = BIT(0),
+ .reserved = BIT(1) | BIT(2),
+@@ -1130,6 +1136,8 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC650) },
+ { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) },
+ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */
++ { USB_DEVICE_AND_INTERFACE_INFO(QUALCOMM_VENDOR_ID, 0x6001, 0xff, 0xff, 0xff), /* 4G LTE usb-modem U901 */
++ .driver_info = (kernel_ulong_t)&net_intf3_blacklist },
+ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */
+ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x0023)}, /* ONYX 3G device */
+ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */
+@@ -1137,6 +1145,8 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&sierra_mc73xx_blacklist }, /* MC73xx */
+ { USB_DEVICE_INTERFACE_CLASS(SIERRA_VENDOR_ID, 0x9041, 0xff),
+ .driver_info = (kernel_ulong_t)&sierra_mc73xx_blacklist }, /* MC7305/MC7355 */
++ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9003), /* Quectel UC20 */
++ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6001) },
+ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_300) },
+ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6003),
+@@ -1188,6 +1198,8 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG3),
+ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
++ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG5, 0xff),
++ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
+ .driver_info = (kernel_ulong_t)&telit_le910_blacklist },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920),
+@@ -1657,6 +1669,8 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(ALINK_VENDOR_ID, 0x9000) },
+ { USB_DEVICE(ALINK_VENDOR_ID, ALINK_PRODUCT_PH300) },
+ { USB_DEVICE_AND_INTERFACE_INFO(ALINK_VENDOR_ID, ALINK_PRODUCT_3GU, 0xff, 0xff, 0xff) },
++ { USB_DEVICE(ALINK_VENDOR_ID, SIMCOM_PRODUCT_SIM7100E),
++ .driver_info = (kernel_ulong_t)&simcom_sim7100e_blacklist },
+ { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X060S_X200),
+ .driver_info = (kernel_ulong_t)&alcatel_x200_blacklist
+ },
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index 514fa91cf74e..f0a2ad15a992 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -155,14 +155,17 @@ static const struct usb_device_id id_table[] = {
+ {DEVICE_SWI(0x1199, 0x9056)}, /* Sierra Wireless Modem */
+ {DEVICE_SWI(0x1199, 0x9060)}, /* Sierra Wireless Modem */
+ {DEVICE_SWI(0x1199, 0x9061)}, /* Sierra Wireless Modem */
+- {DEVICE_SWI(0x1199, 0x9070)}, /* Sierra Wireless MC74xx/EM74xx */
+- {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx/EM74xx */
++ {DEVICE_SWI(0x1199, 0x9070)}, /* Sierra Wireless MC74xx */
++ {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx */
++ {DEVICE_SWI(0x1199, 0x9078)}, /* Sierra Wireless EM74xx */
++ {DEVICE_SWI(0x1199, 0x9079)}, /* Sierra Wireless EM74xx */
+ {DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81a8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81a9)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81b1)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
++ {DEVICE_SWI(0x413c, 0x81b3)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
+
+ /* Huawei devices */
+ {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
+diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
+index e9851add6f4e..c0f4ab83aaa8 100644
+--- a/drivers/vfio/pci/vfio_pci.c
++++ b/drivers/vfio/pci/vfio_pci.c
+@@ -446,7 +446,8 @@ static long vfio_pci_ioctl(void *device_data,
+ info.num_regions = VFIO_PCI_NUM_REGIONS;
+ info.num_irqs = VFIO_PCI_NUM_IRQS;
+
+- return copy_to_user((void __user *)arg, &info, minsz);
++ return copy_to_user((void __user *)arg, &info, minsz) ?
++ -EFAULT : 0;
+
+ } else if (cmd == VFIO_DEVICE_GET_REGION_INFO) {
+ struct pci_dev *pdev = vdev->pdev;
+@@ -520,7 +521,8 @@ static long vfio_pci_ioctl(void *device_data,
+ return -EINVAL;
+ }
+
+- return copy_to_user((void __user *)arg, &info, minsz);
++ return copy_to_user((void __user *)arg, &info, minsz) ?
++ -EFAULT : 0;
+
+ } else if (cmd == VFIO_DEVICE_GET_IRQ_INFO) {
+ struct vfio_irq_info info;
+@@ -555,7 +557,8 @@ static long vfio_pci_ioctl(void *device_data,
+ else
+ info.flags |= VFIO_IRQ_INFO_NORESIZE;
+
+- return copy_to_user((void __user *)arg, &info, minsz);
++ return copy_to_user((void __user *)arg, &info, minsz) ?
++ -EFAULT : 0;
+
+ } else if (cmd == VFIO_DEVICE_SET_IRQS) {
+ struct vfio_irq_set hdr;
+diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
+index abcff7a1aa66..973b24ffe332 100644
+--- a/drivers/vfio/platform/vfio_platform_common.c
++++ b/drivers/vfio/platform/vfio_platform_common.c
+@@ -163,7 +163,8 @@ static long vfio_platform_ioctl(void *device_data,
+ info.num_regions = vdev->num_regions;
+ info.num_irqs = vdev->num_irqs;
+
+- return copy_to_user((void __user *)arg, &info, minsz);
++ return copy_to_user((void __user *)arg, &info, minsz) ?
++ -EFAULT : 0;
+
+ } else if (cmd == VFIO_DEVICE_GET_REGION_INFO) {
+ struct vfio_region_info info;
+@@ -184,7 +185,8 @@ static long vfio_platform_ioctl(void *device_data,
+ info.size = vdev->regions[info.index].size;
+ info.flags = vdev->regions[info.index].flags;
+
+- return copy_to_user((void __user *)arg, &info, minsz);
++ return copy_to_user((void __user *)arg, &info, minsz) ?
++ -EFAULT : 0;
+
+ } else if (cmd == VFIO_DEVICE_GET_IRQ_INFO) {
+ struct vfio_irq_info info;
+@@ -203,7 +205,8 @@ static long vfio_platform_ioctl(void *device_data,
+ info.flags = vdev->irqs[info.index].flags;
+ info.count = vdev->irqs[info.index].count;
+
+- return copy_to_user((void __user *)arg, &info, minsz);
++ return copy_to_user((void __user *)arg, &info, minsz) ?
++ -EFAULT : 0;
+
+ } else if (cmd == VFIO_DEVICE_SET_IRQS) {
+ struct vfio_irq_set hdr;
+diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
+index 57d8c37a002b..092216540756 100644
+--- a/drivers/vfio/vfio_iommu_type1.c
++++ b/drivers/vfio/vfio_iommu_type1.c
+@@ -986,7 +986,8 @@ static long vfio_iommu_type1_ioctl(void *iommu_data,
+
+ info.iova_pgsizes = vfio_pgsize_bitmap(iommu);
+
+- return copy_to_user((void __user *)arg, &info, minsz);
++ return copy_to_user((void __user *)arg, &info, minsz) ?
++ -EFAULT : 0;
+
+ } else if (cmd == VFIO_IOMMU_MAP_DMA) {
+ struct vfio_iommu_type1_dma_map map;
+@@ -1019,7 +1020,8 @@ static long vfio_iommu_type1_ioctl(void *iommu_data,
+ if (ret)
+ return ret;
+
+- return copy_to_user((void __user *)arg, &unmap, minsz);
++ return copy_to_user((void __user *)arg, &unmap, minsz) ?
++ -EFAULT : 0;
+ }
+
+ return -ENOTTY;
+diff --git a/drivers/xen/xen-pciback/pciback.h b/drivers/xen/xen-pciback/pciback.h
+index 58e38d586f52..4d529f3e40df 100644
+--- a/drivers/xen/xen-pciback/pciback.h
++++ b/drivers/xen/xen-pciback/pciback.h
+@@ -37,6 +37,7 @@ struct xen_pcibk_device {
+ struct xen_pci_sharedinfo *sh_info;
+ unsigned long flags;
+ struct work_struct op_work;
++ struct xen_pci_op op;
+ };
+
+ struct xen_pcibk_dev_data {
+diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
+index c4a0666de6f5..9cf4653b6bd7 100644
+--- a/drivers/xen/xen-pciback/pciback_ops.c
++++ b/drivers/xen/xen-pciback/pciback_ops.c
+@@ -197,13 +197,27 @@ int xen_pcibk_enable_msix(struct xen_pcibk_device *pdev,
+ struct xen_pcibk_dev_data *dev_data;
+ int i, result;
+ struct msix_entry *entries;
++ u16 cmd;
+
+ if (unlikely(verbose_request))
+ printk(KERN_DEBUG DRV_NAME ": %s: enable MSI-X\n",
+ pci_name(dev));
++
+ if (op->value > SH_INFO_MAX_VEC)
+ return -EINVAL;
+
++ if (dev->msix_enabled)
++ return -EALREADY;
++
++ /*
++ * PCI_COMMAND_MEMORY must be enabled, otherwise we may not be able
++ * to access the BARs where the MSI-X entries reside.
++ * But VF devices are unique in which the PF needs to be checked.
++ */
++ pci_read_config_word(pci_physfn(dev), PCI_COMMAND, &cmd);
++ if (dev->msi_enabled || !(cmd & PCI_COMMAND_MEMORY))
++ return -ENXIO;
++
+ entries = kmalloc(op->value * sizeof(*entries), GFP_KERNEL);
+ if (entries == NULL)
+ return -ENOMEM;
+@@ -298,9 +312,14 @@ void xen_pcibk_do_op(struct work_struct *data)
+ container_of(data, struct xen_pcibk_device, op_work);
+ struct pci_dev *dev;
+ struct xen_pcibk_dev_data *dev_data = NULL;
+- struct xen_pci_op *op = &pdev->sh_info->op;
++ struct xen_pci_op *op = &pdev->op;
+ int test_intx = 0;
++#ifdef CONFIG_PCI_MSI
++ unsigned int nr = 0;
++#endif
+
++ *op = pdev->sh_info->op;
++ barrier();
+ dev = xen_pcibk_get_pci_dev(pdev, op->domain, op->bus, op->devfn);
+
+ if (dev == NULL)
+@@ -326,6 +345,7 @@ void xen_pcibk_do_op(struct work_struct *data)
+ op->err = xen_pcibk_disable_msi(pdev, dev, op);
+ break;
+ case XEN_PCI_OP_enable_msix:
++ nr = op->value;
+ op->err = xen_pcibk_enable_msix(pdev, dev, op);
+ break;
+ case XEN_PCI_OP_disable_msix:
+@@ -342,6 +362,17 @@ void xen_pcibk_do_op(struct work_struct *data)
+ if ((dev_data->enable_intx != test_intx))
+ xen_pcibk_control_isr(dev, 0 /* no reset */);
+ }
++ pdev->sh_info->op.err = op->err;
++ pdev->sh_info->op.value = op->value;
++#ifdef CONFIG_PCI_MSI
++ if (op->cmd == XEN_PCI_OP_enable_msix && op->err == 0) {
++ unsigned int i;
++
++ for (i = 0; i < nr; i++)
++ pdev->sh_info->op.msix_entries[i].vector =
++ op->msix_entries[i].vector;
++ }
++#endif
+ /* Tell the driver domain that we're done. */
+ wmb();
+ clear_bit(_XEN_PCIF_active, (unsigned long *)&pdev->sh_info->flags);
+diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
+index b7f51504f85a..c561d530be2e 100644
+--- a/drivers/xen/xen-scsiback.c
++++ b/drivers/xen/xen-scsiback.c
+@@ -941,12 +941,12 @@ out:
+ spin_unlock_irqrestore(&info->v2p_lock, flags);
+
+ out_free:
+- mutex_lock(&tpg->tv_tpg_mutex);
+- tpg->tv_tpg_fe_count--;
+- mutex_unlock(&tpg->tv_tpg_mutex);
+-
+- if (err)
++ if (err) {
++ mutex_lock(&tpg->tv_tpg_mutex);
++ tpg->tv_tpg_fe_count--;
++ mutex_unlock(&tpg->tv_tpg_mutex);
+ kfree(new);
++ }
+
+ return err;
+ }
+diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
+index 252f5c15806b..78a7b1d73354 100644
+--- a/fs/cifs/cifsfs.h
++++ b/fs/cifs/cifsfs.h
+@@ -31,19 +31,15 @@
+ * so that it will fit. We use hash_64 to convert the value to 31 bits, and
+ * then add 1, to ensure that we don't end up with a 0 as the value.
+ */
+-#if BITS_PER_LONG == 64
+ static inline ino_t
+ cifs_uniqueid_to_ino_t(u64 fileid)
+ {
++ if ((sizeof(ino_t)) < (sizeof(u64)))
++ return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;
++
+ return (ino_t)fileid;
++
+ }
+-#else
+-static inline ino_t
+-cifs_uniqueid_to_ino_t(u64 fileid)
+-{
+- return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;
+-}
+-#endif
+
+ extern struct file_system_type cifs_fs_type;
+ extern const struct address_space_operations cifs_addr_ops;
+diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
+index f26ffbfc64d8..f1a5067d5494 100644
+--- a/fs/cifs/cifssmb.c
++++ b/fs/cifs/cifssmb.c
+@@ -1395,11 +1395,10 @@ openRetry:
+ * current bigbuf.
+ */
+ static int
+-cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
++discard_remaining_data(struct TCP_Server_Info *server)
+ {
+ unsigned int rfclen = get_rfc1002_length(server->smallbuf);
+ int remaining = rfclen + 4 - server->total_read;
+- struct cifs_readdata *rdata = mid->callback_data;
+
+ while (remaining > 0) {
+ int length;
+@@ -1413,10 +1412,20 @@ cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+ remaining -= length;
+ }
+
+- dequeue_mid(mid, rdata->result);
+ return 0;
+ }
+
++static int
++cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
++{
++ int length;
++ struct cifs_readdata *rdata = mid->callback_data;
++
++ length = discard_remaining_data(server);
++ dequeue_mid(mid, rdata->result);
++ return length;
++}
++
+ int
+ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+ {
+@@ -1445,6 +1454,12 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+ return length;
+ server->total_read += length;
+
++ if (server->ops->is_status_pending &&
++ server->ops->is_status_pending(buf, server, 0)) {
++ discard_remaining_data(server);
++ return -1;
++ }
++
+ /* Was the SMB read successful? */
+ rdata->result = server->ops->map_error(buf, false);
+ if (rdata->result != 0) {
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 894f259d3989..657a9c5c4fff 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -1042,21 +1042,25 @@ parse_lease_state(struct TCP_Server_Info *server, struct smb2_create_rsp *rsp,
+ {
+ char *data_offset;
+ struct create_context *cc;
+- unsigned int next = 0;
++ unsigned int next;
++ unsigned int remaining;
+ char *name;
+
+ data_offset = (char *)rsp + 4 + le32_to_cpu(rsp->CreateContextsOffset);
++ remaining = le32_to_cpu(rsp->CreateContextsLength);
+ cc = (struct create_context *)data_offset;
+- do {
+- cc = (struct create_context *)((char *)cc + next);
++ while (remaining >= sizeof(struct create_context)) {
+ name = le16_to_cpu(cc->NameOffset) + (char *)cc;
+- if (le16_to_cpu(cc->NameLength) != 4 ||
+- strncmp(name, "RqLs", 4)) {
+- next = le32_to_cpu(cc->Next);
+- continue;
+- }
+- return server->ops->parse_lease_buf(cc, epoch);
+- } while (next != 0);
++ if (le16_to_cpu(cc->NameLength) == 4 &&
++ strncmp(name, "RqLs", 4) == 0)
++ return server->ops->parse_lease_buf(cc, epoch);
++
++ next = le32_to_cpu(cc->Next);
++ if (!next)
++ break;
++ remaining -= next;
++ cc = (struct create_context *)((char *)cc + next);
++ }
+
+ return 0;
+ }
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 0046ab7d4f3d..10bce74c427f 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -269,9 +269,6 @@ static inline int dname_external(const struct dentry *dentry)
+ return dentry->d_name.name != dentry->d_iname;
+ }
+
+-/*
+- * Make sure other CPUs see the inode attached before the type is set.
+- */
+ static inline void __d_set_inode_and_type(struct dentry *dentry,
+ struct inode *inode,
+ unsigned type_flags)
+@@ -279,28 +276,18 @@ static inline void __d_set_inode_and_type(struct dentry *dentry,
+ unsigned flags;
+
+ dentry->d_inode = inode;
+- smp_wmb();
+ flags = READ_ONCE(dentry->d_flags);
+ flags &= ~(DCACHE_ENTRY_TYPE | DCACHE_FALLTHRU);
+ flags |= type_flags;
+ WRITE_ONCE(dentry->d_flags, flags);
+ }
+
+-/*
+- * Ideally, we want to make sure that other CPUs see the flags cleared before
+- * the inode is detached, but this is really a violation of RCU principles
+- * since the ordering suggests we should always set inode before flags.
+- *
+- * We should instead replace or discard the entire dentry - but that sucks
+- * performancewise on mass deletion/rename.
+- */
+ static inline void __d_clear_type_and_inode(struct dentry *dentry)
+ {
+ unsigned flags = READ_ONCE(dentry->d_flags);
+
+ flags &= ~(DCACHE_ENTRY_TYPE | DCACHE_FALLTHRU);
+ WRITE_ONCE(dentry->d_flags, flags);
+- smp_wmb();
+ dentry->d_inode = NULL;
+ }
+
+@@ -322,17 +309,17 @@ static void dentry_free(struct dentry *dentry)
+ }
+
+ /**
+- * dentry_rcuwalk_barrier - invalidate in-progress rcu-walk lookups
++ * dentry_rcuwalk_invalidate - invalidate in-progress rcu-walk lookups
+ * @dentry: the target dentry
+ * After this call, in-progress rcu-walk path lookup will fail. This
+ * should be called after unhashing, and after changing d_inode (if
+ * the dentry has not already been unhashed).
+ */
+-static inline void dentry_rcuwalk_barrier(struct dentry *dentry)
++static inline void dentry_rcuwalk_invalidate(struct dentry *dentry)
+ {
+- assert_spin_locked(&dentry->d_lock);
+- /* Go through a barrier */
+- write_seqcount_barrier(&dentry->d_seq);
++ lockdep_assert_held(&dentry->d_lock);
++ /* Go through am invalidation barrier */
++ write_seqcount_invalidate(&dentry->d_seq);
+ }
+
+ /*
+@@ -370,9 +357,11 @@ static void dentry_unlink_inode(struct dentry * dentry)
+ __releases(dentry->d_inode->i_lock)
+ {
+ struct inode *inode = dentry->d_inode;
++
++ raw_write_seqcount_begin(&dentry->d_seq);
+ __d_clear_type_and_inode(dentry);
+ hlist_del_init(&dentry->d_u.d_alias);
+- dentry_rcuwalk_barrier(dentry);
++ raw_write_seqcount_end(&dentry->d_seq);
+ spin_unlock(&dentry->d_lock);
+ spin_unlock(&inode->i_lock);
+ if (!inode->i_nlink)
+@@ -494,7 +483,7 @@ void __d_drop(struct dentry *dentry)
+ __hlist_bl_del(&dentry->d_hash);
+ dentry->d_hash.pprev = NULL;
+ hlist_bl_unlock(b);
+- dentry_rcuwalk_barrier(dentry);
++ dentry_rcuwalk_invalidate(dentry);
+ }
+ }
+ EXPORT_SYMBOL(__d_drop);
+@@ -1757,8 +1746,9 @@ static void __d_instantiate(struct dentry *dentry, struct inode *inode)
+ spin_lock(&dentry->d_lock);
+ if (inode)
+ hlist_add_head(&dentry->d_u.d_alias, &inode->i_dentry);
++ raw_write_seqcount_begin(&dentry->d_seq);
+ __d_set_inode_and_type(dentry, inode, add_flags);
+- dentry_rcuwalk_barrier(dentry);
++ raw_write_seqcount_end(&dentry->d_seq);
+ spin_unlock(&dentry->d_lock);
+ fsnotify_d_instantiate(dentry, inode);
+ }
+diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
+index 9e92c9c2d319..b5f3cc7274f6 100644
+--- a/fs/hpfs/namei.c
++++ b/fs/hpfs/namei.c
+@@ -377,12 +377,11 @@ static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
+ struct inode *inode = d_inode(dentry);
+ dnode_secno dno;
+ int r;
+- int rep = 0;
+ int err;
+
+ hpfs_lock(dir->i_sb);
+ hpfs_adjust_length(name, &len);
+-again:
++
+ err = -ENOENT;
+ de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
+ if (!de)
+@@ -402,33 +401,9 @@ again:
+ hpfs_error(dir->i_sb, "there was error when removing dirent");
+ err = -EFSERROR;
+ break;
+- case 2: /* no space for deleting, try to truncate file */
+-
++ case 2: /* no space for deleting */
+ err = -ENOSPC;
+- if (rep++)
+- break;
+-
+- dentry_unhash(dentry);
+- if (!d_unhashed(dentry)) {
+- hpfs_unlock(dir->i_sb);
+- return -ENOSPC;
+- }
+- if (generic_permission(inode, MAY_WRITE) ||
+- !S_ISREG(inode->i_mode) ||
+- get_write_access(inode)) {
+- d_rehash(dentry);
+- } else {
+- struct iattr newattrs;
+- /*pr_info("truncating file before delete.\n");*/
+- newattrs.ia_size = 0;
+- newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
+- err = notify_change(dentry, &newattrs, NULL);
+- put_write_access(inode);
+- if (!err)
+- goto again;
+- }
+- hpfs_unlock(dir->i_sb);
+- return -ENOSPC;
++ break;
+ default:
+ drop_nlink(inode);
+ err = 0;
+diff --git a/fs/jffs2/README.Locking b/fs/jffs2/README.Locking
+index 3ea36554107f..8918ac905a3b 100644
+--- a/fs/jffs2/README.Locking
++++ b/fs/jffs2/README.Locking
+@@ -2,10 +2,6 @@
+ JFFS2 LOCKING DOCUMENTATION
+ ---------------------------
+
+-At least theoretically, JFFS2 does not require the Big Kernel Lock
+-(BKL), which was always helpfully obtained for it by Linux 2.4 VFS
+-code. It has its own locking, as described below.
+-
+ This document attempts to describe the existing locking rules for
+ JFFS2. It is not expected to remain perfectly up to date, but ought to
+ be fairly close.
+@@ -69,6 +65,7 @@ Ordering constraints:
+ any f->sem held.
+ 2. Never attempt to lock two file mutexes in one thread.
+ No ordering rules have been made for doing so.
++ 3. Never lock a page cache page with f->sem held.
+
+
+ erase_completion_lock spinlock
+diff --git a/fs/jffs2/build.c b/fs/jffs2/build.c
+index a3750f902adc..c1f04947d7dc 100644
+--- a/fs/jffs2/build.c
++++ b/fs/jffs2/build.c
+@@ -49,7 +49,8 @@ next_inode(int *i, struct jffs2_inode_cache *ic, struct jffs2_sb_info *c)
+
+
+ static void jffs2_build_inode_pass1(struct jffs2_sb_info *c,
+- struct jffs2_inode_cache *ic)
++ struct jffs2_inode_cache *ic,
++ int *dir_hardlinks)
+ {
+ struct jffs2_full_dirent *fd;
+
+@@ -68,19 +69,21 @@ static void jffs2_build_inode_pass1(struct jffs2_sb_info *c,
+ dbg_fsbuild("child \"%s\" (ino #%u) of dir ino #%u doesn't exist!\n",
+ fd->name, fd->ino, ic->ino);
+ jffs2_mark_node_obsolete(c, fd->raw);
++ /* Clear the ic/raw union so it doesn't cause problems later. */
++ fd->ic = NULL;
+ continue;
+ }
+
++ /* From this point, fd->raw is no longer used so we can set fd->ic */
++ fd->ic = child_ic;
++ child_ic->pino_nlink++;
++ /* If we appear (at this stage) to have hard-linked directories,
++ * set a flag to trigger a scan later */
+ if (fd->type == DT_DIR) {
+- if (child_ic->pino_nlink) {
+- JFFS2_ERROR("child dir \"%s\" (ino #%u) of dir ino #%u appears to be a hard link\n",
+- fd->name, fd->ino, ic->ino);
+- /* TODO: What do we do about it? */
+- } else {
+- child_ic->pino_nlink = ic->ino;
+- }
+- } else
+- child_ic->pino_nlink++;
++ child_ic->flags |= INO_FLAGS_IS_DIR;
++ if (child_ic->pino_nlink > 1)
++ *dir_hardlinks = 1;
++ }
+
+ dbg_fsbuild("increased nlink for child \"%s\" (ino #%u)\n", fd->name, fd->ino);
+ /* Can't free scan_dents so far. We might need them in pass 2 */
+@@ -94,8 +97,7 @@ static void jffs2_build_inode_pass1(struct jffs2_sb_info *c,
+ */
+ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
+ {
+- int ret;
+- int i;
++ int ret, i, dir_hardlinks = 0;
+ struct jffs2_inode_cache *ic;
+ struct jffs2_full_dirent *fd;
+ struct jffs2_full_dirent *dead_fds = NULL;
+@@ -119,7 +121,7 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
+ /* Now scan the directory tree, increasing nlink according to every dirent found. */
+ for_each_inode(i, c, ic) {
+ if (ic->scan_dents) {
+- jffs2_build_inode_pass1(c, ic);
++ jffs2_build_inode_pass1(c, ic, &dir_hardlinks);
+ cond_resched();
+ }
+ }
+@@ -155,6 +157,20 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
+ }
+
+ dbg_fsbuild("pass 2a complete\n");
++
++ if (dir_hardlinks) {
++ /* If we detected directory hardlinks earlier, *hopefully*
++ * they are gone now because some of the links were from
++ * dead directories which still had some old dirents lying
++ * around and not yet garbage-collected, but which have
++ * been discarded above. So clear the pino_nlink field
++ * in each directory, so that the final scan below can
++ * print appropriate warnings. */
++ for_each_inode(i, c, ic) {
++ if (ic->flags & INO_FLAGS_IS_DIR)
++ ic->pino_nlink = 0;
++ }
++ }
+ dbg_fsbuild("freeing temporary data structures\n");
+
+ /* Finally, we can scan again and free the dirent structs */
+@@ -162,6 +178,33 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
+ while(ic->scan_dents) {
+ fd = ic->scan_dents;
+ ic->scan_dents = fd->next;
++ /* We do use the pino_nlink field to count nlink of
++ * directories during fs build, so set it to the
++ * parent ino# now. Now that there's hopefully only
++ * one. */
++ if (fd->type == DT_DIR) {
++ if (!fd->ic) {
++ /* We'll have complained about it and marked the coresponding
++ raw node obsolete already. Just skip it. */
++ continue;
++ }
++
++ /* We *have* to have set this in jffs2_build_inode_pass1() */
++ BUG_ON(!(fd->ic->flags & INO_FLAGS_IS_DIR));
++
++ /* We clear ic->pino_nlink ∀ directories' ic *only* if dir_hardlinks
++ * is set. Otherwise, we know this should never trigger anyway, so
++ * we don't do the check. And ic->pino_nlink still contains the nlink
++ * value (which is 1). */
++ if (dir_hardlinks && fd->ic->pino_nlink) {
++ JFFS2_ERROR("child dir \"%s\" (ino #%u) of dir ino #%u is also hard linked from dir ino #%u\n",
++ fd->name, fd->ino, ic->ino, fd->ic->pino_nlink);
++ /* Should we unlink it from its previous parent? */
++ }
++
++ /* For directories, ic->pino_nlink holds that parent inode # */
++ fd->ic->pino_nlink = ic->ino;
++ }
+ jffs2_free_full_dirent(fd);
+ }
+ ic->scan_dents = NULL;
+@@ -240,11 +283,7 @@ static void jffs2_build_remove_unlinked_inode(struct jffs2_sb_info *c,
+
+ /* Reduce nlink of the child. If it's now zero, stick it on the
+ dead_fds list to be cleaned up later. Else just free the fd */
+-
+- if (fd->type == DT_DIR)
+- child_ic->pino_nlink = 0;
+- else
+- child_ic->pino_nlink--;
++ child_ic->pino_nlink--;
+
+ if (!child_ic->pino_nlink) {
+ dbg_fsbuild("inode #%u (\"%s\") now has no links; adding to dead_fds list.\n",
+diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
+index f509f62e12f6..3361979d728c 100644
+--- a/fs/jffs2/file.c
++++ b/fs/jffs2/file.c
+@@ -137,39 +137,33 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ struct page *pg;
+ struct inode *inode = mapping->host;
+ struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
+- struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
+- struct jffs2_raw_inode ri;
+- uint32_t alloc_len = 0;
+ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+ uint32_t pageofs = index << PAGE_CACHE_SHIFT;
+ int ret = 0;
+
+- jffs2_dbg(1, "%s()\n", __func__);
+-
+- if (pageofs > inode->i_size) {
+- ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len,
+- ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
+- if (ret)
+- return ret;
+- }
+-
+- mutex_lock(&f->sem);
+ pg = grab_cache_page_write_begin(mapping, index, flags);
+- if (!pg) {
+- if (alloc_len)
+- jffs2_complete_reservation(c);
+- mutex_unlock(&f->sem);
++ if (!pg)
+ return -ENOMEM;
+- }
+ *pagep = pg;
+
+- if (alloc_len) {
++ jffs2_dbg(1, "%s()\n", __func__);
++
++ if (pageofs > inode->i_size) {
+ /* Make new hole frag from old EOF to new page */
++ struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
++ struct jffs2_raw_inode ri;
+ struct jffs2_full_dnode *fn;
++ uint32_t alloc_len;
+
+ jffs2_dbg(1, "Writing new hole frag 0x%x-0x%x between current EOF and new page\n",
+ (unsigned int)inode->i_size, pageofs);
+
++ ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len,
++ ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
++ if (ret)
++ goto out_page;
++
++ mutex_lock(&f->sem);
+ memset(&ri, 0, sizeof(ri));
+
+ ri.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+@@ -196,6 +190,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ if (IS_ERR(fn)) {
+ ret = PTR_ERR(fn);
+ jffs2_complete_reservation(c);
++ mutex_unlock(&f->sem);
+ goto out_page;
+ }
+ ret = jffs2_add_full_dnode_to_inode(c, f, fn);
+@@ -210,10 +205,12 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ jffs2_mark_node_obsolete(c, fn->raw);
+ jffs2_free_full_dnode(fn);
+ jffs2_complete_reservation(c);
++ mutex_unlock(&f->sem);
+ goto out_page;
+ }
+ jffs2_complete_reservation(c);
+ inode->i_size = pageofs;
++ mutex_unlock(&f->sem);
+ }
+
+ /*
+@@ -222,18 +219,18 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ * case of a short-copy.
+ */
+ if (!PageUptodate(pg)) {
++ mutex_lock(&f->sem);
+ ret = jffs2_do_readpage_nolock(inode, pg);
++ mutex_unlock(&f->sem);
+ if (ret)
+ goto out_page;
+ }
+- mutex_unlock(&f->sem);
+ jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);
+ return ret;
+
+ out_page:
+ unlock_page(pg);
+ page_cache_release(pg);
+- mutex_unlock(&f->sem);
+ return ret;
+ }
+
+diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
+index 5a2dec2b064c..95d5880a63ee 100644
+--- a/fs/jffs2/gc.c
++++ b/fs/jffs2/gc.c
+@@ -1296,14 +1296,17 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
+ BUG_ON(start > orig_start);
+ }
+
+- /* First, use readpage() to read the appropriate page into the page cache */
+- /* Q: What happens if we actually try to GC the _same_ page for which commit_write()
+- * triggered garbage collection in the first place?
+- * A: I _think_ it's OK. read_cache_page shouldn't deadlock, we'll write out the
+- * page OK. We'll actually write it out again in commit_write, which is a little
+- * suboptimal, but at least we're correct.
+- */
++ /* The rules state that we must obtain the page lock *before* f->sem, so
++ * drop f->sem temporarily. Since we also hold c->alloc_sem, nothing's
++ * actually going to *change* so we're safe; we only allow reading.
++ *
++ * It is important to note that jffs2_write_begin() will ensure that its
++ * page is marked Uptodate before allocating space. That means that if we
++ * end up here trying to GC the *same* page that jffs2_write_begin() is
++ * trying to write out, read_cache_page() will not deadlock. */
++ mutex_unlock(&f->sem);
+ pg_ptr = jffs2_gc_fetch_page(c, f, start, &pg);
++ mutex_lock(&f->sem);
+
+ if (IS_ERR(pg_ptr)) {
+ pr_warn("read_cache_page() returned error: %ld\n",
+diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
+index fa35ff79ab35..0637271f3770 100644
+--- a/fs/jffs2/nodelist.h
++++ b/fs/jffs2/nodelist.h
+@@ -194,6 +194,7 @@ struct jffs2_inode_cache {
+ #define INO_STATE_CLEARING 6 /* In clear_inode() */
+
+ #define INO_FLAGS_XATTR_CHECKED 0x01 /* has no duplicate xattr_ref */
++#define INO_FLAGS_IS_DIR 0x02 /* is a directory */
+
+ #define RAWNODE_CLASS_INODE_CACHE 0
+ #define RAWNODE_CLASS_XATTR_DATUM 1
+@@ -249,7 +250,10 @@ struct jffs2_readinode_info
+
+ struct jffs2_full_dirent
+ {
+- struct jffs2_raw_node_ref *raw;
++ union {
++ struct jffs2_raw_node_ref *raw;
++ struct jffs2_inode_cache *ic; /* Just during part of build */
++ };
+ struct jffs2_full_dirent *next;
+ uint32_t version;
+ uint32_t ino; /* == zero for unlink */
+diff --git a/fs/namei.c b/fs/namei.c
+index ccd7f98d85b9..f3cc848da8bc 100644
+--- a/fs/namei.c
++++ b/fs/namei.c
+@@ -1619,10 +1619,10 @@ static inline int walk_component(struct nameidata *nd, struct path *path,
+ if (err < 0)
+ goto out_err;
+
+- inode = path->dentry->d_inode;
+ err = -ENOENT;
+ if (d_is_negative(path->dentry))
+ goto out_path_put;
++ inode = path->dentry->d_inode;
+ }
+
+ if (should_follow_link(path->dentry, follow)) {
+@@ -3078,6 +3078,7 @@ retry_lookup:
+ path_to_nameidata(path, nd);
+ goto out;
+ }
++ inode = path->dentry->d_inode;
+ finish_lookup:
+ /* we _can_ be in RCU mode here */
+ if (should_follow_link(path->dentry, !symlink_ok)) {
+@@ -3152,6 +3153,10 @@ opened:
+ goto exit_fput;
+ }
+ out:
++ if (unlikely(error > 0)) {
++ WARN_ON(1);
++ error = -EINVAL;
++ }
+ if (got_write)
+ mnt_drop_write(nd->path.mnt);
+ path_put(&save_parent);
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index 2c4f41c34366..84706204cc33 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -2331,9 +2331,9 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
+ dentry = d_add_unique(dentry, igrab(state->inode));
+ if (dentry == NULL) {
+ dentry = opendata->dentry;
+- } else if (dentry != ctx->dentry) {
++ } else {
+ dput(ctx->dentry);
+- ctx->dentry = dget(dentry);
++ ctx->dentry = dentry;
+ }
+ nfs_set_verifier(dentry,
+ nfs_save_change_attribute(d_inode(opendata->dir)));
+diff --git a/include/linux/ata.h b/include/linux/ata.h
+index 5dfbcd8887bb..2e5fb1c31251 100644
+--- a/include/linux/ata.h
++++ b/include/linux/ata.h
+@@ -487,8 +487,8 @@ enum ata_tf_protocols {
+ };
+
+ enum ata_ioctls {
+- ATA_IOC_GET_IO32 = 0x309,
+- ATA_IOC_SET_IO32 = 0x324,
++ ATA_IOC_GET_IO32 = 0x309, /* HDIO_GET_32BIT */
++ ATA_IOC_SET_IO32 = 0x324, /* HDIO_SET_32BIT */
+ };
+
+ /* core structures */
+diff --git a/include/linux/dcache.h b/include/linux/dcache.h
+index 167ec0934049..ca9df4521734 100644
+--- a/include/linux/dcache.h
++++ b/include/linux/dcache.h
+@@ -408,9 +408,7 @@ static inline bool d_mountpoint(const struct dentry *dentry)
+ */
+ static inline unsigned __d_entry_type(const struct dentry *dentry)
+ {
+- unsigned type = READ_ONCE(dentry->d_flags);
+- smp_rmb();
+- return type & DCACHE_ENTRY_TYPE;
++ return dentry->d_flags & DCACHE_ENTRY_TYPE;
+ }
+
+ static inline bool d_is_miss(const struct dentry *dentry)
+diff --git a/include/linux/libata.h b/include/linux/libata.h
+index e0e33787c485..11c2dd114732 100644
+--- a/include/linux/libata.h
++++ b/include/linux/libata.h
+@@ -717,7 +717,7 @@ struct ata_device {
+ union {
+ u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
+ u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
+- };
++ } ____cacheline_aligned;
+
+ /* DEVSLP Timing Variables from Identify Device Data Log */
+ u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
+diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
+index b95f914ce083..150f43a9149c 100644
+--- a/include/linux/nfs_fs.h
++++ b/include/linux/nfs_fs.h
+@@ -540,9 +540,7 @@ extern int nfs_readpage_async(struct nfs_open_context *, struct inode *,
+
+ static inline loff_t nfs_size_to_loff_t(__u64 size)
+ {
+- if (size > (__u64) OFFSET_MAX - 1)
+- return OFFSET_MAX - 1;
+- return (loff_t) size;
++ return min_t(u64, size, OFFSET_MAX);
+ }
+
+ static inline ino_t
+diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
+index 5f68d0a391ce..c07e3a536099 100644
+--- a/include/linux/seqlock.h
++++ b/include/linux/seqlock.h
+@@ -266,13 +266,13 @@ static inline void write_seqcount_end(seqcount_t *s)
+ }
+
+ /**
+- * write_seqcount_barrier - invalidate in-progress read-side seq operations
++ * write_seqcount_invalidate - invalidate in-progress read-side seq operations
+ * @s: pointer to seqcount_t
+ *
+- * After write_seqcount_barrier, no read-side seq operations will complete
++ * After write_seqcount_invalidate, no read-side seq operations will complete
+ * successfully and see data older than this.
+ */
+-static inline void write_seqcount_barrier(seqcount_t *s)
++static inline void write_seqcount_invalidate(seqcount_t *s)
+ {
+ smp_wmb();
+ s->sequence+=2;
+diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
+index 480e9f82dfea..2b40a1fab293 100644
+--- a/include/target/target_core_base.h
++++ b/include/target/target_core_base.h
+@@ -167,6 +167,7 @@ enum se_cmd_flags_table {
+ SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
+ SCF_COMPARE_AND_WRITE = 0x00080000,
+ SCF_COMPARE_AND_WRITE_POST = 0x00100000,
++ SCF_ACK_KREF = 0x00400000,
+ };
+
+ /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
+@@ -522,7 +523,7 @@ struct se_cmd {
+ sense_reason_t (*execute_cmd)(struct se_cmd *);
+ sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
+ u32, enum dma_data_direction);
+- sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool);
++ sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool, int *);
+
+ unsigned char *t_task_cdb;
+ unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
+@@ -537,6 +538,8 @@ struct se_cmd {
+ #define CMD_T_DEV_ACTIVE (1 << 7)
+ #define CMD_T_REQUEST_STOP (1 << 8)
+ #define CMD_T_BUSY (1 << 9)
++#define CMD_T_TAS (1 << 10)
++#define CMD_T_FABRIC_STOP (1 << 11)
+ spinlock_t t_state_lock;
+ struct completion t_transport_stop_comp;
+
+diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
+index c4de47fc5cca..f69ec1295b0b 100644
+--- a/kernel/trace/trace_events.c
++++ b/kernel/trace/trace_events.c
+@@ -683,7 +683,8 @@ t_next(struct seq_file *m, void *v, loff_t *pos)
+ * The ftrace subsystem is for showing formats only.
+ * They can not be enabled or disabled via the event files.
+ */
+- if (call->class && call->class->reg)
++ if (call->class && call->class->reg &&
++ !(call->flags & TRACE_EVENT_FL_IGNORE_ENABLE))
+ return file;
+ }
+
+diff --git a/mm/memory.c b/mm/memory.c
+index 2a9e09870c20..701d9ad45c46 100644
+--- a/mm/memory.c
++++ b/mm/memory.c
+@@ -3363,8 +3363,18 @@ static int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
+ if (unlikely(pmd_none(*pmd)) &&
+ unlikely(__pte_alloc(mm, vma, pmd, address)))
+ return VM_FAULT_OOM;
+- /* if an huge pmd materialized from under us just retry later */
+- if (unlikely(pmd_trans_huge(*pmd)))
++ /*
++ * If a huge pmd materialized under us just retry later. Use
++ * pmd_trans_unstable() instead of pmd_trans_huge() to ensure the pmd
++ * didn't become pmd_trans_huge under us and then back to pmd_none, as
++ * a result of MADV_DONTNEED running immediately after a huge pmd fault
++ * in a different thread of this mm, in turn leading to a misleading
++ * pmd_trans_huge() retval. All we have to ensure is that it is a
++ * regular pmd that we can walk with pte_offset_map() and we can do that
++ * through an atomic read in C, which is what pmd_trans_unstable()
++ * provides.
++ */
++ if (unlikely(pmd_trans_unstable(pmd)))
+ return 0;
+ /*
+ * A regular pmd is established and it can't morph into a huge pmd
+diff --git a/mm/migrate.c b/mm/migrate.c
+index 2c37b1a44a8c..8c4841a6dc4c 100644
+--- a/mm/migrate.c
++++ b/mm/migrate.c
+@@ -1557,7 +1557,7 @@ static struct page *alloc_misplaced_dst_page(struct page *page,
+ (GFP_HIGHUSER_MOVABLE |
+ __GFP_THISNODE | __GFP_NOMEMALLOC |
+ __GFP_NORETRY | __GFP_NOWARN) &
+- ~GFP_IOFS, 0);
++ ~__GFP_WAIT, 0);
+
+ return newpage;
+ }
+diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
+index e51af69c61bf..84201c21705e 100644
+--- a/net/ceph/messenger.c
++++ b/net/ceph/messenger.c
+@@ -1203,6 +1203,13 @@ static bool ceph_msg_data_advance(struct ceph_msg_data_cursor *cursor,
+ return new_piece;
+ }
+
++static size_t sizeof_footer(struct ceph_connection *con)
++{
++ return (con->peer_features & CEPH_FEATURE_MSG_AUTH) ?
++ sizeof(struct ceph_msg_footer) :
++ sizeof(struct ceph_msg_footer_old);
++}
++
+ static void prepare_message_data(struct ceph_msg *msg, u32 data_len)
+ {
+ BUG_ON(!msg);
+@@ -2326,9 +2333,9 @@ static int read_partial_message(struct ceph_connection *con)
+ ceph_pr_addr(&con->peer_addr.in_addr),
+ seq, con->in_seq + 1);
+ con->in_base_pos = -front_len - middle_len - data_len -
+- sizeof(m->footer);
++ sizeof_footer(con);
+ con->in_tag = CEPH_MSGR_TAG_READY;
+- return 0;
++ return 1;
+ } else if ((s64)seq - (s64)con->in_seq > 1) {
+ pr_err("read_partial_message bad seq %lld expected %lld\n",
+ seq, con->in_seq + 1);
+@@ -2358,10 +2365,10 @@ static int read_partial_message(struct ceph_connection *con)
+ /* skip this message */
+ dout("alloc_msg said skip message\n");
+ con->in_base_pos = -front_len - middle_len - data_len -
+- sizeof(m->footer);
++ sizeof_footer(con);
+ con->in_tag = CEPH_MSGR_TAG_READY;
+ con->in_seq++;
+- return 0;
++ return 1;
+ }
+
+ BUG_ON(!con->in_msg);
+diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
+index 36b9ac48b8fb..06bf4010d3ed 100644
+--- a/net/ipv6/ip6_output.c
++++ b/net/ipv6/ip6_output.c
+@@ -376,6 +376,9 @@ int ip6_forward(struct sk_buff *skb)
+ if (skb->pkt_type != PACKET_HOST)
+ goto drop;
+
++ if (unlikely(skb->sk))
++ goto drop;
++
+ if (skb_warn_if_lro(skb))
+ goto drop;
+
+diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
+index 2928afffbb81..8d79e70bd978 100644
+--- a/net/sunrpc/cache.c
++++ b/net/sunrpc/cache.c
+@@ -1218,7 +1218,7 @@ int qword_get(char **bpp, char *dest, int bufsize)
+ if (bp[0] == '\\' && bp[1] == 'x') {
+ /* HEX STRING */
+ bp += 2;
+- while (len < bufsize) {
++ while (len < bufsize - 1) {
+ int h, l;
+
+ h = hex_to_bin(bp[0]);
+diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c
+index b9c0910fb8c4..0608f216f359 100644
+--- a/sound/core/control_compat.c
++++ b/sound/core/control_compat.c
+@@ -170,6 +170,19 @@ struct snd_ctl_elem_value32 {
+ unsigned char reserved[128];
+ };
+
++#ifdef CONFIG_X86_X32
++/* x32 has a different alignment for 64bit values from ia32 */
++struct snd_ctl_elem_value_x32 {
++ struct snd_ctl_elem_id id;
++ unsigned int indirect; /* bit-field causes misalignment */
++ union {
++ s32 integer[128];
++ unsigned char data[512];
++ s64 integer64[64];
++ } value;
++ unsigned char reserved[128];
++};
++#endif /* CONFIG_X86_X32 */
+
+ /* get the value type and count of the control */
+ static int get_ctl_type(struct snd_card *card, struct snd_ctl_elem_id *id,
+@@ -219,9 +232,11 @@ static int get_elem_size(int type, int count)
+
+ static int copy_ctl_value_from_user(struct snd_card *card,
+ struct snd_ctl_elem_value *data,
+- struct snd_ctl_elem_value32 __user *data32,
++ void __user *userdata,
++ void __user *valuep,
+ int *typep, int *countp)
+ {
++ struct snd_ctl_elem_value32 __user *data32 = userdata;
+ int i, type, size;
+ int uninitialized_var(count);
+ unsigned int indirect;
+@@ -239,8 +254,9 @@ static int copy_ctl_value_from_user(struct snd_card *card,
+ if (type == SNDRV_CTL_ELEM_TYPE_BOOLEAN ||
+ type == SNDRV_CTL_ELEM_TYPE_INTEGER) {
+ for (i = 0; i < count; i++) {
++ s32 __user *intp = valuep;
+ int val;
+- if (get_user(val, &data32->value.integer[i]))
++ if (get_user(val, &intp[i]))
+ return -EFAULT;
+ data->value.integer.value[i] = val;
+ }
+@@ -250,8 +266,7 @@ static int copy_ctl_value_from_user(struct snd_card *card,
+ dev_err(card->dev, "snd_ioctl32_ctl_elem_value: unknown type %d\n", type);
+ return -EINVAL;
+ }
+- if (copy_from_user(data->value.bytes.data,
+- data32->value.data, size))
++ if (copy_from_user(data->value.bytes.data, valuep, size))
+ return -EFAULT;
+ }
+
+@@ -261,7 +276,8 @@ static int copy_ctl_value_from_user(struct snd_card *card,
+ }
+
+ /* restore the value to 32bit */
+-static int copy_ctl_value_to_user(struct snd_ctl_elem_value32 __user *data32,
++static int copy_ctl_value_to_user(void __user *userdata,
++ void __user *valuep,
+ struct snd_ctl_elem_value *data,
+ int type, int count)
+ {
+@@ -270,22 +286,22 @@ static int copy_ctl_value_to_user(struct snd_ctl_elem_value32 __user *data32,
+ if (type == SNDRV_CTL_ELEM_TYPE_BOOLEAN ||
+ type == SNDRV_CTL_ELEM_TYPE_INTEGER) {
+ for (i = 0; i < count; i++) {
++ s32 __user *intp = valuep;
+ int val;
+ val = data->value.integer.value[i];
+- if (put_user(val, &data32->value.integer[i]))
++ if (put_user(val, &intp[i]))
+ return -EFAULT;
+ }
+ } else {
+ size = get_elem_size(type, count);
+- if (copy_to_user(data32->value.data,
+- data->value.bytes.data, size))
++ if (copy_to_user(valuep, data->value.bytes.data, size))
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+-static int snd_ctl_elem_read_user_compat(struct snd_card *card,
+- struct snd_ctl_elem_value32 __user *data32)
++static int ctl_elem_read_user(struct snd_card *card,
++ void __user *userdata, void __user *valuep)
+ {
+ struct snd_ctl_elem_value *data;
+ int err, type, count;
+@@ -294,7 +310,9 @@ static int snd_ctl_elem_read_user_compat(struct snd_card *card,
+ if (data == NULL)
+ return -ENOMEM;
+
+- if ((err = copy_ctl_value_from_user(card, data, data32, &type, &count)) < 0)
++ err = copy_ctl_value_from_user(card, data, userdata, valuep,
++ &type, &count);
++ if (err < 0)
+ goto error;
+
+ snd_power_lock(card);
+@@ -303,14 +321,15 @@ static int snd_ctl_elem_read_user_compat(struct snd_card *card,
+ err = snd_ctl_elem_read(card, data);
+ snd_power_unlock(card);
+ if (err >= 0)
+- err = copy_ctl_value_to_user(data32, data, type, count);
++ err = copy_ctl_value_to_user(userdata, valuep, data,
++ type, count);
+ error:
+ kfree(data);
+ return err;
+ }
+
+-static int snd_ctl_elem_write_user_compat(struct snd_ctl_file *file,
+- struct snd_ctl_elem_value32 __user *data32)
++static int ctl_elem_write_user(struct snd_ctl_file *file,
++ void __user *userdata, void __user *valuep)
+ {
+ struct snd_ctl_elem_value *data;
+ struct snd_card *card = file->card;
+@@ -320,7 +339,9 @@ static int snd_ctl_elem_write_user_compat(struct snd_ctl_file *file,
+ if (data == NULL)
+ return -ENOMEM;
+
+- if ((err = copy_ctl_value_from_user(card, data, data32, &type, &count)) < 0)
++ err = copy_ctl_value_from_user(card, data, userdata, valuep,
++ &type, &count);
++ if (err < 0)
+ goto error;
+
+ snd_power_lock(card);
+@@ -329,12 +350,39 @@ static int snd_ctl_elem_write_user_compat(struct snd_ctl_file *file,
+ err = snd_ctl_elem_write(card, file, data);
+ snd_power_unlock(card);
+ if (err >= 0)
+- err = copy_ctl_value_to_user(data32, data, type, count);
++ err = copy_ctl_value_to_user(userdata, valuep, data,
++ type, count);
+ error:
+ kfree(data);
+ return err;
+ }
+
++static int snd_ctl_elem_read_user_compat(struct snd_card *card,
++ struct snd_ctl_elem_value32 __user *data32)
++{
++ return ctl_elem_read_user(card, data32, &data32->value);
++}
++
++static int snd_ctl_elem_write_user_compat(struct snd_ctl_file *file,
++ struct snd_ctl_elem_value32 __user *data32)
++{
++ return ctl_elem_write_user(file, data32, &data32->value);
++}
++
++#ifdef CONFIG_X86_X32
++static int snd_ctl_elem_read_user_x32(struct snd_card *card,
++ struct snd_ctl_elem_value_x32 __user *data32)
++{
++ return ctl_elem_read_user(card, data32, &data32->value);
++}
++
++static int snd_ctl_elem_write_user_x32(struct snd_ctl_file *file,
++ struct snd_ctl_elem_value_x32 __user *data32)
++{
++ return ctl_elem_write_user(file, data32, &data32->value);
++}
++#endif /* CONFIG_X86_X32 */
++
+ /* add or replace a user control */
+ static int snd_ctl_elem_add_compat(struct snd_ctl_file *file,
+ struct snd_ctl_elem_info32 __user *data32,
+@@ -393,6 +441,10 @@ enum {
+ SNDRV_CTL_IOCTL_ELEM_WRITE32 = _IOWR('U', 0x13, struct snd_ctl_elem_value32),
+ SNDRV_CTL_IOCTL_ELEM_ADD32 = _IOWR('U', 0x17, struct snd_ctl_elem_info32),
+ SNDRV_CTL_IOCTL_ELEM_REPLACE32 = _IOWR('U', 0x18, struct snd_ctl_elem_info32),
++#ifdef CONFIG_X86_X32
++ SNDRV_CTL_IOCTL_ELEM_READ_X32 = _IOWR('U', 0x12, struct snd_ctl_elem_value_x32),
++ SNDRV_CTL_IOCTL_ELEM_WRITE_X32 = _IOWR('U', 0x13, struct snd_ctl_elem_value_x32),
++#endif /* CONFIG_X86_X32 */
+ };
+
+ static inline long snd_ctl_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
+@@ -431,6 +483,12 @@ static inline long snd_ctl_ioctl_compat(struct file *file, unsigned int cmd, uns
+ return snd_ctl_elem_add_compat(ctl, argp, 0);
+ case SNDRV_CTL_IOCTL_ELEM_REPLACE32:
+ return snd_ctl_elem_add_compat(ctl, argp, 1);
++#ifdef CONFIG_X86_X32
++ case SNDRV_CTL_IOCTL_ELEM_READ_X32:
++ return snd_ctl_elem_read_user_x32(ctl->card, argp);
++ case SNDRV_CTL_IOCTL_ELEM_WRITE_X32:
++ return snd_ctl_elem_write_user_x32(ctl, argp);
++#endif /* CONFIG_X86_X32 */
+ }
+
+ down_read(&snd_ioctl_rwsem);
+diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c
+index 9630e9f72b7b..1f64ab0c2a95 100644
+--- a/sound/core/pcm_compat.c
++++ b/sound/core/pcm_compat.c
+@@ -183,6 +183,14 @@ static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream
+ return err;
+ }
+
++#ifdef CONFIG_X86_X32
++/* X32 ABI has the same struct as x86-64 for snd_pcm_channel_info */
++static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream,
++ struct snd_pcm_channel_info __user *src);
++#define snd_pcm_ioctl_channel_info_x32(s, p) \
++ snd_pcm_channel_info_user(s, p)
++#endif /* CONFIG_X86_X32 */
++
+ struct snd_pcm_status32 {
+ s32 state;
+ struct compat_timespec trigger_tstamp;
+@@ -243,6 +251,71 @@ static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
+ return err;
+ }
+
++#ifdef CONFIG_X86_X32
++/* X32 ABI has 64bit timespec and 64bit alignment */
++struct snd_pcm_status_x32 {
++ s32 state;
++ u32 rsvd; /* alignment */
++ struct timespec trigger_tstamp;
++ struct timespec tstamp;
++ u32 appl_ptr;
++ u32 hw_ptr;
++ s32 delay;
++ u32 avail;
++ u32 avail_max;
++ u32 overrange;
++ s32 suspended_state;
++ u32 audio_tstamp_data;
++ struct timespec audio_tstamp;
++ struct timespec driver_tstamp;
++ u32 audio_tstamp_accuracy;
++ unsigned char reserved[52-2*sizeof(struct timespec)];
++} __packed;
++
++#define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
++
++static int snd_pcm_status_user_x32(struct snd_pcm_substream *substream,
++ struct snd_pcm_status_x32 __user *src,
++ bool ext)
++{
++ struct snd_pcm_status status;
++ int err;
++
++ memset(&status, 0, sizeof(status));
++ /*
++ * with extension, parameters are read/write,
++ * get audio_tstamp_data from user,
++ * ignore rest of status structure
++ */
++ if (ext && get_user(status.audio_tstamp_data,
++ (u32 __user *)(&src->audio_tstamp_data)))
++ return -EFAULT;
++ err = snd_pcm_status(substream, &status);
++ if (err < 0)
++ return err;
++
++ if (clear_user(src, sizeof(*src)))
++ return -EFAULT;
++ if (put_user(status.state, &src->state) ||
++ put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
++ put_timespec(&status.tstamp, &src->tstamp) ||
++ put_user(status.appl_ptr, &src->appl_ptr) ||
++ put_user(status.hw_ptr, &src->hw_ptr) ||
++ put_user(status.delay, &src->delay) ||
++ put_user(status.avail, &src->avail) ||
++ put_user(status.avail_max, &src->avail_max) ||
++ put_user(status.overrange, &src->overrange) ||
++ put_user(status.suspended_state, &src->suspended_state) ||
++ put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
++ put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
++ put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
++ put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
++ return -EFAULT;
++
++ return err;
++}
++#endif /* CONFIG_X86_X32 */
++
+ /* both for HW_PARAMS and HW_REFINE */
+ static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
+ int refine,
+@@ -469,6 +542,93 @@ static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
+ return 0;
+ }
+
++#ifdef CONFIG_X86_X32
++/* X32 ABI has 64bit timespec and 64bit alignment */
++struct snd_pcm_mmap_status_x32 {
++ s32 state;
++ s32 pad1;
++ u32 hw_ptr;
++ u32 pad2; /* alignment */
++ struct timespec tstamp;
++ s32 suspended_state;
++ struct timespec audio_tstamp;
++} __packed;
++
++struct snd_pcm_mmap_control_x32 {
++ u32 appl_ptr;
++ u32 avail_min;
++};
++
++struct snd_pcm_sync_ptr_x32 {
++ u32 flags;
++ u32 rsvd; /* alignment */
++ union {
++ struct snd_pcm_mmap_status_x32 status;
++ unsigned char reserved[64];
++ } s;
++ union {
++ struct snd_pcm_mmap_control_x32 control;
++ unsigned char reserved[64];
++ } c;
++} __packed;
++
++static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
++ struct snd_pcm_sync_ptr_x32 __user *src)
++{
++ struct snd_pcm_runtime *runtime = substream->runtime;
++ volatile struct snd_pcm_mmap_status *status;
++ volatile struct snd_pcm_mmap_control *control;
++ u32 sflags;
++ struct snd_pcm_mmap_control scontrol;
++ struct snd_pcm_mmap_status sstatus;
++ snd_pcm_uframes_t boundary;
++ int err;
++
++ if (snd_BUG_ON(!runtime))
++ return -EINVAL;
++
++ if (get_user(sflags, &src->flags) ||
++ get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
++ get_user(scontrol.avail_min, &src->c.control.avail_min))
++ return -EFAULT;
++ if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
++ err = snd_pcm_hwsync(substream);
++ if (err < 0)
++ return err;
++ }
++ status = runtime->status;
++ control = runtime->control;
++ boundary = recalculate_boundary(runtime);
++ if (!boundary)
++ boundary = 0x7fffffff;
++ snd_pcm_stream_lock_irq(substream);
++ /* FIXME: we should consider the boundary for the sync from app */
++ if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
++ control->appl_ptr = scontrol.appl_ptr;
++ else
++ scontrol.appl_ptr = control->appl_ptr % boundary;
++ if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
++ control->avail_min = scontrol.avail_min;
++ else
++ scontrol.avail_min = control->avail_min;
++ sstatus.state = status->state;
++ sstatus.hw_ptr = status->hw_ptr % boundary;
++ sstatus.tstamp = status->tstamp;
++ sstatus.suspended_state = status->suspended_state;
++ sstatus.audio_tstamp = status->audio_tstamp;
++ snd_pcm_stream_unlock_irq(substream);
++ if (put_user(sstatus.state, &src->s.status.state) ||
++ put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
++ put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
++ put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
++ put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) ||
++ put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
++ put_user(scontrol.avail_min, &src->c.control.avail_min))
++ return -EFAULT;
++
++ return 0;
++}
++#endif /* CONFIG_X86_X32 */
+
+ /*
+ */
+@@ -487,7 +647,12 @@ enum {
+ SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
+ SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
+ SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
+-
++#ifdef CONFIG_X86_X32
++ SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
++ SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32),
++ SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32),
++ SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
++#endif /* CONFIG_X86_X32 */
+ };
+
+ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
+@@ -559,6 +724,16 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
+ return snd_pcm_ioctl_rewind_compat(substream, argp);
+ case SNDRV_PCM_IOCTL_FORWARD32:
+ return snd_pcm_ioctl_forward_compat(substream, argp);
++#ifdef CONFIG_X86_X32
++ case SNDRV_PCM_IOCTL_STATUS_X32:
++ return snd_pcm_status_user_x32(substream, argp, false);
++ case SNDRV_PCM_IOCTL_STATUS_EXT_X32:
++ return snd_pcm_status_user_x32(substream, argp, true);
++ case SNDRV_PCM_IOCTL_SYNC_PTR_X32:
++ return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
++ case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
++ return snd_pcm_ioctl_channel_info_x32(substream, argp);
++#endif /* CONFIG_X86_X32 */
+ }
+
+ return -ENOIOCTLCMD;
+diff --git a/sound/core/rawmidi_compat.c b/sound/core/rawmidi_compat.c
+index 5268c1f58c25..09a89094dcf7 100644
+--- a/sound/core/rawmidi_compat.c
++++ b/sound/core/rawmidi_compat.c
+@@ -94,9 +94,58 @@ static int snd_rawmidi_ioctl_status_compat(struct snd_rawmidi_file *rfile,
+ return 0;
+ }
+
++#ifdef CONFIG_X86_X32
++/* X32 ABI has 64bit timespec and 64bit alignment */
++struct snd_rawmidi_status_x32 {
++ s32 stream;
++ u32 rsvd; /* alignment */
++ struct timespec tstamp;
++ u32 avail;
++ u32 xruns;
++ unsigned char reserved[16];
++} __attribute__((packed));
++
++#define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
++
++static int snd_rawmidi_ioctl_status_x32(struct snd_rawmidi_file *rfile,
++ struct snd_rawmidi_status_x32 __user *src)
++{
++ int err;
++ struct snd_rawmidi_status status;
++
++ if (rfile->output == NULL)
++ return -EINVAL;
++ if (get_user(status.stream, &src->stream))
++ return -EFAULT;
++
++ switch (status.stream) {
++ case SNDRV_RAWMIDI_STREAM_OUTPUT:
++ err = snd_rawmidi_output_status(rfile->output, &status);
++ break;
++ case SNDRV_RAWMIDI_STREAM_INPUT:
++ err = snd_rawmidi_input_status(rfile->input, &status);
++ break;
++ default:
++ return -EINVAL;
++ }
++ if (err < 0)
++ return err;
++
++ if (put_timespec(&status.tstamp, &src->tstamp) ||
++ put_user(status.avail, &src->avail) ||
++ put_user(status.xruns, &src->xruns))
++ return -EFAULT;
++
++ return 0;
++}
++#endif /* CONFIG_X86_X32 */
++
+ enum {
+ SNDRV_RAWMIDI_IOCTL_PARAMS32 = _IOWR('W', 0x10, struct snd_rawmidi_params32),
+ SNDRV_RAWMIDI_IOCTL_STATUS32 = _IOWR('W', 0x20, struct snd_rawmidi_status32),
++#ifdef CONFIG_X86_X32
++ SNDRV_RAWMIDI_IOCTL_STATUS_X32 = _IOWR('W', 0x20, struct snd_rawmidi_status_x32),
++#endif /* CONFIG_X86_X32 */
+ };
+
+ static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
+@@ -115,6 +164,10 @@ static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsign
+ return snd_rawmidi_ioctl_params_compat(rfile, argp);
+ case SNDRV_RAWMIDI_IOCTL_STATUS32:
+ return snd_rawmidi_ioctl_status_compat(rfile, argp);
++#ifdef CONFIG_X86_X32
++ case SNDRV_RAWMIDI_IOCTL_STATUS_X32:
++ return snd_rawmidi_ioctl_status_x32(rfile, argp);
++#endif /* CONFIG_X86_X32 */
+ }
+ return -ENOIOCTLCMD;
+ }
+diff --git a/sound/core/seq/oss/seq_oss.c b/sound/core/seq/oss/seq_oss.c
+index 72873a46afeb..4b53b8f2330f 100644
+--- a/sound/core/seq/oss/seq_oss.c
++++ b/sound/core/seq/oss/seq_oss.c
+@@ -148,8 +148,6 @@ odev_release(struct inode *inode, struct file *file)
+ if ((dp = file->private_data) == NULL)
+ return 0;
+
+- snd_seq_oss_drain_write(dp);
+-
+ mutex_lock(®ister_mutex);
+ snd_seq_oss_release(dp);
+ mutex_unlock(®ister_mutex);
+diff --git a/sound/core/seq/oss/seq_oss_device.h b/sound/core/seq/oss/seq_oss_device.h
+index b43924325249..d7b4d016b547 100644
+--- a/sound/core/seq/oss/seq_oss_device.h
++++ b/sound/core/seq/oss/seq_oss_device.h
+@@ -127,7 +127,6 @@ int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int co
+ unsigned int snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait);
+
+ void snd_seq_oss_reset(struct seq_oss_devinfo *dp);
+-void snd_seq_oss_drain_write(struct seq_oss_devinfo *dp);
+
+ /* */
+ void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time);
+diff --git a/sound/core/seq/oss/seq_oss_init.c b/sound/core/seq/oss/seq_oss_init.c
+index dad5b1123e46..0b9c18b2e45f 100644
+--- a/sound/core/seq/oss/seq_oss_init.c
++++ b/sound/core/seq/oss/seq_oss_init.c
+@@ -436,22 +436,6 @@ snd_seq_oss_release(struct seq_oss_devinfo *dp)
+
+
+ /*
+- * Wait until the queue is empty (if we don't have nonblock)
+- */
+-void
+-snd_seq_oss_drain_write(struct seq_oss_devinfo *dp)
+-{
+- if (! dp->timer->running)
+- return;
+- if (is_write_mode(dp->file_mode) && !is_nonblock_mode(dp->file_mode) &&
+- dp->writeq) {
+- while (snd_seq_oss_writeq_sync(dp->writeq))
+- ;
+- }
+-}
+-
+-
+-/*
+ * reset sequencer devices
+ */
+ void
+diff --git a/sound/core/timer_compat.c b/sound/core/timer_compat.c
+index e05802ae6e1b..2e908225d754 100644
+--- a/sound/core/timer_compat.c
++++ b/sound/core/timer_compat.c
+@@ -70,13 +70,14 @@ static int snd_timer_user_status_compat(struct file *file,
+ struct snd_timer_status32 __user *_status)
+ {
+ struct snd_timer_user *tu;
+- struct snd_timer_status status;
++ struct snd_timer_status32 status;
+
+ tu = file->private_data;
+ if (snd_BUG_ON(!tu->timeri))
+ return -ENXIO;
+ memset(&status, 0, sizeof(status));
+- status.tstamp = tu->tstamp;
++ status.tstamp.tv_sec = tu->tstamp.tv_sec;
++ status.tstamp.tv_nsec = tu->tstamp.tv_nsec;
+ status.resolution = snd_timer_resolution(tu->timeri);
+ status.lost = tu->timeri->lost;
+ status.overrun = tu->overrun;
+@@ -88,12 +89,21 @@ static int snd_timer_user_status_compat(struct file *file,
+ return 0;
+ }
+
++#ifdef CONFIG_X86_X32
++/* X32 ABI has the same struct as x86-64 */
++#define snd_timer_user_status_x32(file, s) \
++ snd_timer_user_status(file, s)
++#endif /* CONFIG_X86_X32 */
++
+ /*
+ */
+
+ enum {
+ SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32),
+ SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32),
++#ifdef CONFIG_X86_X32
++ SNDRV_TIMER_IOCTL_STATUS_X32 = _IOW('T', 0x14, struct snd_timer_status),
++#endif /* CONFIG_X86_X32 */
+ };
+
+ static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
+@@ -122,6 +132,10 @@ static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, uns
+ return snd_timer_user_info_compat(file, argp);
+ case SNDRV_TIMER_IOCTL_STATUS32:
+ return snd_timer_user_status_compat(file, argp);
++#ifdef CONFIG_X86_X32
++ case SNDRV_TIMER_IOCTL_STATUS_X32:
++ return snd_timer_user_status_x32(file, argp);
++#endif /* CONFIG_X86_X32 */
+ }
+ return -ENOIOCTLCMD;
+ }
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index df34c78a6ced..91cc6897d595 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -3477,6 +3477,29 @@ static void gpio2_mic_hotkey_event(struct hda_codec *codec,
+ input_sync(spec->kb_dev);
+ }
+
++static int alc_register_micmute_input_device(struct hda_codec *codec)
++{
++ struct alc_spec *spec = codec->spec;
++
++ spec->kb_dev = input_allocate_device();
++ if (!spec->kb_dev) {
++ codec_err(codec, "Out of memory (input_allocate_device)\n");
++ return -ENOMEM;
++ }
++ spec->kb_dev->name = "Microphone Mute Button";
++ spec->kb_dev->evbit[0] = BIT_MASK(EV_KEY);
++ spec->kb_dev->keybit[BIT_WORD(KEY_MICMUTE)] = BIT_MASK(KEY_MICMUTE);
++
++ if (input_register_device(spec->kb_dev)) {
++ codec_err(codec, "input_register_device failed\n");
++ input_free_device(spec->kb_dev);
++ spec->kb_dev = NULL;
++ return -ENOMEM;
++ }
++
++ return 0;
++}
++
+ static void alc280_fixup_hp_gpio2_mic_hotkey(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+ {
+@@ -3494,20 +3517,8 @@ static void alc280_fixup_hp_gpio2_mic_hotkey(struct hda_codec *codec,
+ struct alc_spec *spec = codec->spec;
+
+ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+- spec->kb_dev = input_allocate_device();
+- if (!spec->kb_dev) {
+- codec_err(codec, "Out of memory (input_allocate_device)\n");
++ if (alc_register_micmute_input_device(codec) != 0)
+ return;
+- }
+- spec->kb_dev->name = "Microphone Mute Button";
+- spec->kb_dev->evbit[0] = BIT_MASK(EV_KEY);
+- spec->kb_dev->keybit[BIT_WORD(KEY_MICMUTE)] = BIT_MASK(KEY_MICMUTE);
+- if (input_register_device(spec->kb_dev)) {
+- codec_err(codec, "input_register_device failed\n");
+- input_free_device(spec->kb_dev);
+- spec->kb_dev = NULL;
+- return;
+- }
+
+ snd_hda_add_verbs(codec, gpio_init);
+ snd_hda_codec_write_cache(codec, codec->core.afg, 0,
+@@ -3537,6 +3548,47 @@ static void alc280_fixup_hp_gpio2_mic_hotkey(struct hda_codec *codec,
+ }
+ }
+
++static void alc233_fixup_lenovo_line2_mic_hotkey(struct hda_codec *codec,
++ const struct hda_fixup *fix, int action)
++{
++ /* Line2 = mic mute hotkey
++ GPIO2 = mic mute LED */
++ static const struct hda_verb gpio_init[] = {
++ { 0x01, AC_VERB_SET_GPIO_MASK, 0x04 },
++ { 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x04 },
++ {}
++ };
++
++ struct alc_spec *spec = codec->spec;
++
++ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
++ if (alc_register_micmute_input_device(codec) != 0)
++ return;
++
++ snd_hda_add_verbs(codec, gpio_init);
++ snd_hda_jack_detect_enable_callback(codec, 0x1b,
++ gpio2_mic_hotkey_event);
++
++ spec->gen.cap_sync_hook = alc_fixup_gpio_mic_mute_hook;
++ spec->gpio_led = 0;
++ spec->mute_led_polarity = 0;
++ spec->gpio_mic_led_mask = 0x04;
++ return;
++ }
++
++ if (!spec->kb_dev)
++ return;
++
++ switch (action) {
++ case HDA_FIXUP_ACT_PROBE:
++ spec->init_amp = ALC_INIT_DEFAULT;
++ break;
++ case HDA_FIXUP_ACT_FREE:
++ input_unregister_device(spec->kb_dev);
++ spec->kb_dev = NULL;
++ }
++}
++
+ static void alc269_fixup_hp_line1_mic1_led(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+ {
+@@ -3720,6 +3772,10 @@ static void alc_headset_mode_mic_in(struct hda_codec *codec, hda_nid_t hp_pin,
+
+ static void alc_headset_mode_default(struct hda_codec *codec)
+ {
++ static struct coef_fw coef0225[] = {
++ UPDATE_COEF(0x45, 0x3f<<10, 0x34<<10),
++ {}
++ };
+ static struct coef_fw coef0255[] = {
+ WRITE_COEF(0x45, 0xc089),
+ WRITE_COEF(0x45, 0xc489),
+@@ -3761,6 +3817,9 @@ static void alc_headset_mode_default(struct hda_codec *codec)
+ };
+
+ switch (codec->core.vendor_id) {
++ case 0x10ec0225:
++ alc_process_coef_fw(codec, coef0225);
++ break;
+ case 0x10ec0255:
+ case 0x10ec0256:
+ alc_process_coef_fw(codec, coef0255);
+@@ -4570,6 +4629,14 @@ enum {
+ ALC288_FIXUP_DISABLE_AAMIX,
+ ALC292_FIXUP_DELL_E7X,
+ ALC292_FIXUP_DISABLE_AAMIX,
++ ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC275_FIXUP_DELL_XPS,
++ ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE,
++ ALC293_FIXUP_LENOVO_SPK_NOISE,
++ ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY,
++ ALC255_FIXUP_DELL_SPK_NOISE,
++ ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC280_FIXUP_HP_HEADSET_MIC,
+ };
+
+ static const struct hda_fixup alc269_fixups[] = {
+@@ -5131,6 +5198,71 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC292_FIXUP_DISABLE_AAMIX
+ },
++ [ALC298_FIXUP_DELL1_MIC_NO_PRESENCE] = {
++ .type = HDA_FIXUP_PINS,
++ .v.pins = (const struct hda_pintbl[]) {
++ { 0x18, 0x01a1913c }, /* use as headset mic, without its own jack detect */
++ { 0x1a, 0x01a1913d }, /* use as headphone mic, without its own jack detect */
++ { }
++ },
++ .chained = true,
++ .chain_id = ALC269_FIXUP_HEADSET_MODE
++ },
++ [ALC275_FIXUP_DELL_XPS] = {
++ .type = HDA_FIXUP_VERBS,
++ .v.verbs = (const struct hda_verb[]) {
++ /* Enables internal speaker */
++ {0x20, AC_VERB_SET_COEF_INDEX, 0x1f},
++ {0x20, AC_VERB_SET_PROC_COEF, 0x00c0},
++ {0x20, AC_VERB_SET_COEF_INDEX, 0x30},
++ {0x20, AC_VERB_SET_PROC_COEF, 0x00b1},
++ {}
++ }
++ },
++ [ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE] = {
++ .type = HDA_FIXUP_VERBS,
++ .v.verbs = (const struct hda_verb[]) {
++ /* Disable pass-through path for FRONT 14h */
++ {0x20, AC_VERB_SET_COEF_INDEX, 0x36},
++ {0x20, AC_VERB_SET_PROC_COEF, 0x1737},
++ {}
++ },
++ .chained = true,
++ .chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
++ },
++ [ALC293_FIXUP_LENOVO_SPK_NOISE] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_disable_aamix,
++ .chained = true,
++ .chain_id = ALC269_FIXUP_THINKPAD_ACPI
++ },
++ [ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc233_fixup_lenovo_line2_mic_hotkey,
++ },
++ [ALC255_FIXUP_DELL_SPK_NOISE] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_disable_aamix,
++ .chained = true,
++ .chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
++ },
++ [ALC225_FIXUP_DELL1_MIC_NO_PRESENCE] = {
++ .type = HDA_FIXUP_VERBS,
++ .v.verbs = (const struct hda_verb[]) {
++ /* Disable pass-through path for FRONT 14h */
++ { 0x20, AC_VERB_SET_COEF_INDEX, 0x36 },
++ { 0x20, AC_VERB_SET_PROC_COEF, 0x57d7 },
++ {}
++ },
++ .chained = true,
++ .chain_id = ALC269_FIXUP_DELL1_MIC_NO_PRESENCE
++ },
++ [ALC280_FIXUP_HP_HEADSET_MIC] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_disable_aamix,
++ .chained = true,
++ .chain_id = ALC269_FIXUP_HEADSET_MIC,
++ },
+ };
+
+ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+@@ -5142,10 +5274,12 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1025, 0x080d, "Acer Aspire V5-122P", ALC269_FIXUP_ASPIRE_HEADSET_MIC),
+ SND_PCI_QUIRK(0x1025, 0x0740, "Acer AO725", ALC271_FIXUP_HP_GATE_MIC_JACK),
+ SND_PCI_QUIRK(0x1025, 0x0742, "Acer AO756", ALC271_FIXUP_HP_GATE_MIC_JACK),
++ SND_PCI_QUIRK(0x1025, 0x0762, "Acer Aspire E1-472", ALC271_FIXUP_HP_GATE_MIC_JACK_E1_572),
+ SND_PCI_QUIRK(0x1025, 0x0775, "Acer Aspire E1-572", ALC271_FIXUP_HP_GATE_MIC_JACK_E1_572),
+ SND_PCI_QUIRK(0x1025, 0x079b, "Acer Aspire V5-573G", ALC282_FIXUP_ASPIRE_V5_PINS),
+ SND_PCI_QUIRK(0x1025, 0x106d, "Acer Cloudbook 14", ALC283_FIXUP_CHROME_BOOK),
+ SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z),
++ SND_PCI_QUIRK(0x1028, 0x054b, "Dell XPS one 2710", ALC275_FIXUP_DELL_XPS),
+ SND_PCI_QUIRK(0x1028, 0x05ca, "Dell Latitude E7240", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x05cb, "Dell Latitude E7440", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x05da, "Dell Vostro 5460", ALC290_FIXUP_SUBWOOFER),
+@@ -5169,6 +5303,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x1028, 0x06df, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x1028, 0x06e0, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
++ SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
++ SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE),
+ SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
+@@ -5228,6 +5364,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x103c, 0x2335, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+ SND_PCI_QUIRK(0x103c, 0x2336, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
+ SND_PCI_QUIRK(0x103c, 0x2337, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC1),
++ SND_PCI_QUIRK(0x103c, 0x221c, "HP EliteBook 755 G2", ALC280_FIXUP_HP_HEADSET_MIC),
+ SND_PCI_QUIRK(0x1043, 0x103f, "ASUS TX300", ALC282_FIXUP_ASUS_TX300),
+ SND_PCI_QUIRK(0x1043, 0x106d, "Asus K53BE", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x1043, 0x115d, "Asus 1015E", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+@@ -5275,6 +5412,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x2218, "Thinkpad X1 Carbon 2nd", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2223, "ThinkPad T550", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
++ SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
++ SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
+ SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
+ SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
+ SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+@@ -5284,6 +5423,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x5034, "Thinkpad T450", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x5036, "Thinkpad T450s", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x503c, "Thinkpad L450", ALC292_FIXUP_TPT440_DOCK),
++ SND_PCI_QUIRK(0x17aa, 0x504b, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
+ SND_PCI_QUIRK(0x17aa, 0x5109, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
+ SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD),
+@@ -5365,6 +5505,9 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ {.id = ALC292_FIXUP_TPT440, .name = "tpt440"},
+ {}
+ };
++#define ALC225_STANDARD_PINS \
++ {0x12, 0xb7a60130}, \
++ {0x21, 0x04211020}
+
+ #define ALC255_STANDARD_PINS \
+ {0x18, 0x411111f0}, \
+@@ -5414,7 +5557,20 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ {0x1d, 0x40700001}, \
+ {0x1e, 0x411111f0}
+
++#define ALC298_STANDARD_PINS \
++ {0x18, 0x411111f0}, \
++ {0x19, 0x411111f0}, \
++ {0x1a, 0x411111f0}, \
++ {0x1e, 0x411111f0}, \
++ {0x1f, 0x411111f0}
++
+ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
++ SND_HDA_PIN_QUIRK(0x10ec0225, 0x1028, "Dell", ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC225_STANDARD_PINS,
++ {0x14, 0x901701a0}),
++ SND_HDA_PIN_QUIRK(0x10ec0225, 0x1028, "Dell", ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC225_STANDARD_PINS,
++ {0x14, 0x901701b0}),
+ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL2_MIC_NO_PRESENCE,
+ ALC255_STANDARD_PINS,
+ {0x12, 0x40300000},
+@@ -5708,6 +5864,14 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ {0x16, 0x411111f0},
+ {0x18, 0x411111f0},
+ {0x19, 0x411111f0}),
++ SND_HDA_PIN_QUIRK(0x10ec0298, 0x1028, "Dell", ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
++ ALC298_STANDARD_PINS,
++ {0x12, 0x90a60130},
++ {0x13, 0x40000000},
++ {0x14, 0x411111f0},
++ {0x17, 0x90170140},
++ {0x1d, 0x4068a36d},
++ {0x21, 0x03211020}),
+ {}
+ };
+
+diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
+index c19e021ccf66..11246280945d 100644
+--- a/sound/pci/rme9652/hdsp.c
++++ b/sound/pci/rme9652/hdsp.c
+@@ -2878,7 +2878,7 @@ static int snd_hdsp_get_dds_offset(struct snd_kcontrol *kcontrol, struct snd_ctl
+ {
+ struct hdsp *hdsp = snd_kcontrol_chip(kcontrol);
+
+- ucontrol->value.enumerated.item[0] = hdsp_dds_offset(hdsp);
++ ucontrol->value.integer.value[0] = hdsp_dds_offset(hdsp);
+ return 0;
+ }
+
+@@ -2890,7 +2890,7 @@ static int snd_hdsp_put_dds_offset(struct snd_kcontrol *kcontrol, struct snd_ctl
+
+ if (!snd_hdsp_use_is_exclusive(hdsp))
+ return -EBUSY;
+- val = ucontrol->value.enumerated.item[0];
++ val = ucontrol->value.integer.value[0];
+ spin_lock_irq(&hdsp->lock);
+ if (val != hdsp_dds_offset(hdsp))
+ change = (hdsp_set_dds_offset(hdsp, val) == 0) ? 1 : 0;
+diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
+index cb666c73712d..7f6190606f5e 100644
+--- a/sound/pci/rme9652/hdspm.c
++++ b/sound/pci/rme9652/hdspm.c
+@@ -1601,6 +1601,9 @@ static void hdspm_set_dds_value(struct hdspm *hdspm, int rate)
+ {
+ u64 n;
+
++ if (snd_BUG_ON(rate <= 0))
++ return;
++
+ if (rate >= 112000)
+ rate /= 4;
+ else if (rate >= 56000)
+@@ -2215,6 +2218,8 @@ static int hdspm_get_system_sample_rate(struct hdspm *hdspm)
+ } else {
+ /* slave mode, return external sample rate */
+ rate = hdspm_external_sample_rate(hdspm);
++ if (!rate)
++ rate = hdspm->system_sample_rate;
+ }
+ }
+
+@@ -2260,8 +2265,11 @@ static int snd_hdspm_put_system_sample_rate(struct snd_kcontrol *kcontrol,
+ ucontrol)
+ {
+ struct hdspm *hdspm = snd_kcontrol_chip(kcontrol);
++ int rate = ucontrol->value.integer.value[0];
+
+- hdspm_set_dds_value(hdspm, ucontrol->value.enumerated.item[0]);
++ if (rate < 27000 || rate > 207000)
++ return -EINVAL;
++ hdspm_set_dds_value(hdspm, ucontrol->value.integer.value[0]);
+ return 0;
+ }
+
+@@ -4449,7 +4457,7 @@ static int snd_hdspm_get_tco_word_term(struct snd_kcontrol *kcontrol,
+ {
+ struct hdspm *hdspm = snd_kcontrol_chip(kcontrol);
+
+- ucontrol->value.enumerated.item[0] = hdspm->tco->term;
++ ucontrol->value.integer.value[0] = hdspm->tco->term;
+
+ return 0;
+ }
+@@ -4460,8 +4468,8 @@ static int snd_hdspm_put_tco_word_term(struct snd_kcontrol *kcontrol,
+ {
+ struct hdspm *hdspm = snd_kcontrol_chip(kcontrol);
+
+- if (hdspm->tco->term != ucontrol->value.enumerated.item[0]) {
+- hdspm->tco->term = ucontrol->value.enumerated.item[0];
++ if (hdspm->tco->term != ucontrol->value.integer.value[0]) {
++ hdspm->tco->term = ucontrol->value.integer.value[0];
+
+ hdspm_tco_write(hdspm);
+
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 37d8ababfc04..a4d03e5da3e0 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1121,6 +1121,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ case USB_ID(0x045E, 0x076F): /* MS Lifecam HD-6000 */
+ case USB_ID(0x045E, 0x0772): /* MS Lifecam Studio */
+ case USB_ID(0x045E, 0x0779): /* MS Lifecam HD-3000 */
++ case USB_ID(0x047F, 0xAA05): /* Plantronics DA45 */
+ case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
+ case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
+ case USB_ID(0x21B4, 0x0081): /* AudioQuest DragonFly */
+diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
+index 11ccbb22ea2b..13d0458afc71 100644
+--- a/tools/perf/MANIFEST
++++ b/tools/perf/MANIFEST
+@@ -28,24 +28,20 @@ include/asm-generic/bitops/const_hweight.h
+ include/asm-generic/bitops/fls64.h
+ include/asm-generic/bitops/__fls.h
+ include/asm-generic/bitops/fls.h
+-include/linux/const.h
+ include/linux/perf_event.h
+ include/linux/rbtree.h
+ include/linux/list.h
+ include/linux/hash.h
+ include/linux/stringify.h
+-lib/find_next_bit.c
+ lib/hweight.c
+ lib/rbtree.c
+ include/linux/swab.h
+ arch/*/include/asm/unistd*.h
+-arch/*/include/asm/perf_regs.h
+ arch/*/include/uapi/asm/unistd*.h
+ arch/*/include/uapi/asm/perf_regs.h
+ arch/*/lib/memcpy*.S
+ arch/*/lib/memset*.S
+ include/linux/poison.h
+-include/linux/magic.h
+ include/linux/hw_breakpoint.h
+ include/linux/rbtree_augmented.h
+ include/uapi/linux/perf_event.h
+diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
+index 950064a0942d..934d56f6803c 100644
+--- a/virt/kvm/arm/vgic.c
++++ b/virt/kvm/arm/vgic.c
+@@ -1602,8 +1602,8 @@ void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu)
+ static int vgic_vcpu_init_maps(struct kvm_vcpu *vcpu, int nr_irqs)
+ {
+ struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
+-
+- int sz = (nr_irqs - VGIC_NR_PRIVATE_IRQS) / 8;
++ int nr_longs = BITS_TO_LONGS(nr_irqs - VGIC_NR_PRIVATE_IRQS);
++ int sz = nr_longs * sizeof(unsigned long);
+ vgic_cpu->pending_shared = kzalloc(sz, GFP_KERNEL);
+ vgic_cpu->active_shared = kzalloc(sz, GFP_KERNEL);
+ vgic_cpu->pend_act_shared = kzalloc(sz, GFP_KERNEL);
+diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
+index 44660aee335f..f84f5856520a 100644
+--- a/virt/kvm/async_pf.c
++++ b/virt/kvm/async_pf.c
+@@ -169,7 +169,7 @@ int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva,
+ * do alloc nowait since if we are going to sleep anyway we
+ * may as well sleep faulting in page
+ */
+- work = kmem_cache_zalloc(async_pf_cache, GFP_NOWAIT);
++ work = kmem_cache_zalloc(async_pf_cache, GFP_NOWAIT | __GFP_NOWARN);
+ if (!work)
+ return 0;
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-03-05 23:38 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-03-05 23:38 UTC (permalink / raw
To: gentoo-commits
commit: 4a919eff2d079c34d6f84bf9073c32ef11af9864
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sat Mar 5 23:38:27 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sat Mar 5 23:38:27 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=4a919eff
Linux patch 4.1.19
0000_README | 4 +
1018_linux-4.1.19.patch | 7602 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 7606 insertions(+)
diff --git a/0000_README b/0000_README
index ed66531..ad1d372 100644
--- a/0000_README
+++ b/0000_README
@@ -115,6 +115,10 @@ Patch: 1017_linux-4.1.18.patch
From: http://www.kernel.org
Desc: Linux 4.1.18
+Patch: 1018_linux-4.1.19.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.19
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1018_linux-4.1.19.patch b/1018_linux-4.1.19.patch
new file mode 100644
index 0000000..449c63a
--- /dev/null
+++ b/1018_linux-4.1.19.patch
@@ -0,0 +1,7602 @@
+diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
+index 071fb18dc57c..07fad3d2fc56 100644
+--- a/Documentation/networking/ip-sysctl.txt
++++ b/Documentation/networking/ip-sysctl.txt
+@@ -1321,6 +1321,14 @@ accept_ra_from_local - BOOLEAN
+ disabled if accept_ra_from_local is disabled
+ on a specific interface.
+
++accept_ra_min_hop_limit - INTEGER
++ Minimum hop limit Information in Router Advertisement.
++
++ Hop limit Information in Router Advertisement less than this
++ variable shall be ignored.
++
++ Default: 1
++
+ accept_ra_pinfo - BOOLEAN
+ Learn Prefix Information in Router Advertisement.
+
+diff --git a/Makefile b/Makefile
+index 001375cfd815..06107f683bbe 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 18
++SUBLEVEL = 19
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/common/icst.c b/arch/arm/common/icst.c
+index 2dc6da70ae59..d7ed252708c5 100644
+--- a/arch/arm/common/icst.c
++++ b/arch/arm/common/icst.c
+@@ -16,7 +16,7 @@
+ */
+ #include <linux/module.h>
+ #include <linux/kernel.h>
+-
++#include <asm/div64.h>
+ #include <asm/hardware/icst.h>
+
+ /*
+@@ -29,7 +29,11 @@ EXPORT_SYMBOL(icst525_s2div);
+
+ unsigned long icst_hz(const struct icst_params *p, struct icst_vco vco)
+ {
+- return p->ref * 2 * (vco.v + 8) / ((vco.r + 2) * p->s2div[vco.s]);
++ u64 dividend = p->ref * 2 * (u64)(vco.v + 8);
++ u32 divisor = (vco.r + 2) * p->s2div[vco.s];
++
++ do_div(dividend, divisor);
++ return (unsigned long)dividend;
+ }
+
+ EXPORT_SYMBOL(icst_hz);
+@@ -58,6 +62,7 @@ icst_hz_to_vco(const struct icst_params *p, unsigned long freq)
+
+ if (f > p->vco_min && f <= p->vco_max)
+ break;
++ i++;
+ } while (i < 8);
+
+ if (i >= 8)
+diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h
+index 6499d93ae68d..47bc45a67e9b 100644
+--- a/arch/mips/include/asm/syscall.h
++++ b/arch/mips/include/asm/syscall.h
+@@ -101,10 +101,8 @@ static inline void syscall_get_arguments(struct task_struct *task,
+ /* O32 ABI syscall() - Either 64-bit with O32 or 32-bit */
+ if ((config_enabled(CONFIG_32BIT) ||
+ test_tsk_thread_flag(task, TIF_32BIT_REGS)) &&
+- (regs->regs[2] == __NR_syscall)) {
++ (regs->regs[2] == __NR_syscall))
+ i++;
+- n++;
+- }
+
+ while (n--)
+ ret |= mips_get_syscall_arg(args++, task, regs, i++);
+diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
+index a52db28ecc1e..4457cb605356 100644
+--- a/arch/powerpc/include/asm/eeh.h
++++ b/arch/powerpc/include/asm/eeh.h
+@@ -79,6 +79,7 @@ struct pci_dn;
+ #define EEH_PE_KEEP (1 << 8) /* Keep PE on hotplug */
+ #define EEH_PE_CFG_RESTRICTED (1 << 9) /* Block config on error */
+ #define EEH_PE_REMOVED (1 << 10) /* Removed permanently */
++#define EEH_PE_PRI_BUS (1 << 11) /* Cached primary bus */
+
+ struct eeh_pe {
+ int type; /* PE type: PHB/Bus/Device */
+@@ -336,19 +337,13 @@ static inline int eeh_check_failure(const volatile void __iomem *token)
+
+ #define eeh_dev_check_failure(x) (0)
+
+-static inline void eeh_addr_cache_build(void) { }
+-
+-static inline void eeh_add_device_early(struct pci_dn *pdn) { }
+-
+-static inline void eeh_add_device_tree_early(struct pci_dn *pdn) { }
+-
+-static inline void eeh_add_device_late(struct pci_dev *dev) { }
+-
+-static inline void eeh_add_device_tree_late(struct pci_bus *bus) { }
+-
+-static inline void eeh_add_sysfs_files(struct pci_bus *bus) { }
+-
+-static inline void eeh_remove_device(struct pci_dev *dev) { }
++#define eeh_addr_cache_build()
++#define eeh_add_device_early(pdn)
++#define eeh_add_device_tree_early(pdn)
++#define eeh_add_device_late(pdev)
++#define eeh_add_device_tree_late(pbus)
++#define eeh_add_sysfs_files(pbus)
++#define eeh_remove_device(pdev)
+
+ #define EEH_POSSIBLE_ERROR(val, type) (0)
+ #define EEH_IO_ERROR_VALUE(size) (-1UL)
+diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
+index 24768ff3cb73..90cc67904dc6 100644
+--- a/arch/powerpc/kernel/eeh_driver.c
++++ b/arch/powerpc/kernel/eeh_driver.c
+@@ -561,6 +561,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
+ */
+ eeh_pe_state_mark(pe, EEH_PE_KEEP);
+ if (bus) {
++ eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
+ pci_lock_rescan_remove();
+ pcibios_remove_pci_devices(bus);
+ pci_unlock_rescan_remove();
+@@ -792,6 +793,7 @@ perm_error:
+ * the their PCI config any more.
+ */
+ if (frozen_bus) {
++ eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
+ eeh_pe_dev_mode_mark(pe, EEH_DEV_REMOVED);
+
+ pci_lock_rescan_remove();
+@@ -875,6 +877,7 @@ static void eeh_handle_special_event(void)
+ continue;
+
+ /* Notify all devices to be down */
++ eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
+ bus = eeh_pe_bus_get(phb_pe);
+ eeh_pe_dev_traverse(pe,
+ eeh_report_failure, NULL);
+diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
+index 22f6d954ef89..c3e0420b8a42 100644
+--- a/arch/powerpc/kernel/eeh_pe.c
++++ b/arch/powerpc/kernel/eeh_pe.c
+@@ -906,7 +906,7 @@ struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe)
+ bus = pe->phb->bus;
+ } else if (pe->type & EEH_PE_BUS ||
+ pe->type & EEH_PE_DEVICE) {
+- if (pe->bus) {
++ if (pe->state & EEH_PE_PRI_BUS) {
+ bus = pe->bus;
+ goto out;
+ }
+diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
+index ce738ab3d5a9..abb396876b9a 100644
+--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
++++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
+@@ -455,9 +455,12 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data)
+ * PCI devices of the PE are expected to be removed prior
+ * to PE reset.
+ */
+- if (!edev->pe->bus)
++ if (!(edev->pe->state & EEH_PE_PRI_BUS)) {
+ edev->pe->bus = pci_find_bus(hose->global_number,
+ pdn->busno);
++ if (edev->pe->bus)
++ edev->pe->state |= EEH_PE_PRI_BUS;
++ }
+
+ /*
+ * Enable EEH explicitly so that we will do EEH check
+diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
+index 181c53bac3a7..62855ac37ab7 100644
+--- a/arch/x86/mm/fault.c
++++ b/arch/x86/mm/fault.c
+@@ -285,6 +285,9 @@ static noinline int vmalloc_fault(unsigned long address)
+ if (!pmd_k)
+ return -1;
+
++ if (pmd_huge(*pmd_k))
++ return 0;
++
+ pte_k = pte_offset_kernel(pmd_k, address);
+ if (!pte_present(*pte_k))
+ return -1;
+@@ -356,8 +359,6 @@ void vmalloc_sync_all(void)
+ * 64-bit:
+ *
+ * Handle a fault on the vmalloc area
+- *
+- * This assumes no large pages in there.
+ */
+ static noinline int vmalloc_fault(unsigned long address)
+ {
+@@ -399,17 +400,23 @@ static noinline int vmalloc_fault(unsigned long address)
+ if (pud_none(*pud_ref))
+ return -1;
+
+- if (pud_none(*pud) || pud_page_vaddr(*pud) != pud_page_vaddr(*pud_ref))
++ if (pud_none(*pud) || pud_pfn(*pud) != pud_pfn(*pud_ref))
+ BUG();
+
++ if (pud_huge(*pud))
++ return 0;
++
+ pmd = pmd_offset(pud, address);
+ pmd_ref = pmd_offset(pud_ref, address);
+ if (pmd_none(*pmd_ref))
+ return -1;
+
+- if (pmd_none(*pmd) || pmd_page(*pmd) != pmd_page(*pmd_ref))
++ if (pmd_none(*pmd) || pmd_pfn(*pmd) != pmd_pfn(*pmd_ref))
+ BUG();
+
++ if (pmd_huge(*pmd))
++ return 0;
++
+ pte_ref = pte_offset_kernel(pmd_ref, address);
+ if (!pte_present(*pte_ref))
+ return -1;
+diff --git a/block/bio.c b/block/bio.c
+index 4441522ca339..cbce3e2208f4 100644
+--- a/block/bio.c
++++ b/block/bio.c
+@@ -1122,9 +1122,12 @@ int bio_uncopy_user(struct bio *bio)
+ if (!bio_flagged(bio, BIO_NULL_MAPPED)) {
+ /*
+ * if we're in a workqueue, the request is orphaned, so
+- * don't copy into a random user address space, just free.
++ * don't copy into a random user address space, just free
++ * and return -EINTR so user space doesn't expect any data.
+ */
+- if (current->mm && bio_data_dir(bio) == READ)
++ if (!current->mm)
++ ret = -EINTR;
++ else if (bio_data_dir(bio) == READ)
+ ret = bio_copy_to_iter(bio, bmd->iter);
+ if (bmd->is_our_pages)
+ bio_free_pages(bio);
+diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
+index 5bc42f9b23f0..c0f03562a145 100644
+--- a/crypto/algif_skcipher.c
++++ b/crypto/algif_skcipher.c
+@@ -31,6 +31,11 @@ struct skcipher_sg_list {
+ struct scatterlist sg[0];
+ };
+
++struct skcipher_tfm {
++ struct crypto_ablkcipher *skcipher;
++ bool has_key;
++};
++
+ struct skcipher_ctx {
+ struct list_head tsgl;
+ struct af_alg_sgl rsgl;
+@@ -750,19 +755,139 @@ static struct proto_ops algif_skcipher_ops = {
+ .poll = skcipher_poll,
+ };
+
++static int skcipher_check_key(struct socket *sock)
++{
++ int err = 0;
++ struct sock *psk;
++ struct alg_sock *pask;
++ struct skcipher_tfm *tfm;
++ struct sock *sk = sock->sk;
++ struct alg_sock *ask = alg_sk(sk);
++
++ lock_sock(sk);
++ if (ask->refcnt)
++ goto unlock_child;
++
++ psk = ask->parent;
++ pask = alg_sk(ask->parent);
++ tfm = pask->private;
++
++ err = -ENOKEY;
++ lock_sock_nested(psk, SINGLE_DEPTH_NESTING);
++ if (!tfm->has_key)
++ goto unlock;
++
++ if (!pask->refcnt++)
++ sock_hold(psk);
++
++ ask->refcnt = 1;
++ sock_put(psk);
++
++ err = 0;
++
++unlock:
++ release_sock(psk);
++unlock_child:
++ release_sock(sk);
++
++ return err;
++}
++
++static int skcipher_sendmsg_nokey(struct socket *sock, struct msghdr *msg,
++ size_t size)
++{
++ int err;
++
++ err = skcipher_check_key(sock);
++ if (err)
++ return err;
++
++ return skcipher_sendmsg(sock, msg, size);
++}
++
++static ssize_t skcipher_sendpage_nokey(struct socket *sock, struct page *page,
++ int offset, size_t size, int flags)
++{
++ int err;
++
++ err = skcipher_check_key(sock);
++ if (err)
++ return err;
++
++ return skcipher_sendpage(sock, page, offset, size, flags);
++}
++
++static int skcipher_recvmsg_nokey(struct socket *sock, struct msghdr *msg,
++ size_t ignored, int flags)
++{
++ int err;
++
++ err = skcipher_check_key(sock);
++ if (err)
++ return err;
++
++ return skcipher_recvmsg(sock, msg, ignored, flags);
++}
++
++static struct proto_ops algif_skcipher_ops_nokey = {
++ .family = PF_ALG,
++
++ .connect = sock_no_connect,
++ .socketpair = sock_no_socketpair,
++ .getname = sock_no_getname,
++ .ioctl = sock_no_ioctl,
++ .listen = sock_no_listen,
++ .shutdown = sock_no_shutdown,
++ .getsockopt = sock_no_getsockopt,
++ .mmap = sock_no_mmap,
++ .bind = sock_no_bind,
++ .accept = sock_no_accept,
++ .setsockopt = sock_no_setsockopt,
++
++ .release = af_alg_release,
++ .sendmsg = skcipher_sendmsg_nokey,
++ .sendpage = skcipher_sendpage_nokey,
++ .recvmsg = skcipher_recvmsg_nokey,
++ .poll = skcipher_poll,
++};
++
+ static void *skcipher_bind(const char *name, u32 type, u32 mask)
+ {
+- return crypto_alloc_ablkcipher(name, type, mask);
++ struct skcipher_tfm *tfm;
++ struct crypto_ablkcipher *skcipher;
++
++ tfm = kzalloc(sizeof(*tfm), GFP_KERNEL);
++ if (!tfm)
++ return ERR_PTR(-ENOMEM);
++
++ skcipher = crypto_alloc_ablkcipher(name, type, mask);
++ if (IS_ERR(skcipher)) {
++ kfree(tfm);
++ return ERR_CAST(skcipher);
++ }
++
++ tfm->skcipher = skcipher;
++
++ return tfm;
+ }
+
+ static void skcipher_release(void *private)
+ {
+- crypto_free_ablkcipher(private);
++ struct skcipher_tfm *tfm = private;
++
++ crypto_free_ablkcipher(tfm->skcipher);
++ kfree(tfm);
+ }
+
+ static int skcipher_setkey(void *private, const u8 *key, unsigned int keylen)
+ {
+- return crypto_ablkcipher_setkey(private, key, keylen);
++ struct skcipher_tfm *tfm = private;
++ int err;
++
++ err = crypto_ablkcipher_setkey(tfm->skcipher, key, keylen);
++ tfm->has_key = !err;
++
++ return err;
+ }
+
+ static void skcipher_wait(struct sock *sk)
+@@ -790,24 +915,26 @@ static void skcipher_sock_destruct(struct sock *sk)
+ af_alg_release_parent(sk);
+ }
+
+-static int skcipher_accept_parent(void *private, struct sock *sk)
++static int skcipher_accept_parent_nokey(void *private, struct sock *sk)
+ {
+ struct skcipher_ctx *ctx;
+ struct alg_sock *ask = alg_sk(sk);
+- unsigned int len = sizeof(*ctx) + crypto_ablkcipher_reqsize(private);
++ struct skcipher_tfm *tfm = private;
++ struct crypto_ablkcipher *skcipher = tfm->skcipher;
++ unsigned int len = sizeof(*ctx) + crypto_ablkcipher_reqsize(skcipher);
+
+ ctx = sock_kmalloc(sk, len, GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+- ctx->iv = sock_kmalloc(sk, crypto_ablkcipher_ivsize(private),
++ ctx->iv = sock_kmalloc(sk, crypto_ablkcipher_ivsize(skcipher),
+ GFP_KERNEL);
+ if (!ctx->iv) {
+ sock_kfree_s(sk, ctx, len);
+ return -ENOMEM;
+ }
+
+- memset(ctx->iv, 0, crypto_ablkcipher_ivsize(private));
++ memset(ctx->iv, 0, crypto_ablkcipher_ivsize(skcipher));
+
+ INIT_LIST_HEAD(&ctx->tsgl);
+ ctx->len = len;
+@@ -820,7 +947,7 @@ static int skcipher_accept_parent(void *private, struct sock *sk)
+
+ ask->private = ctx;
+
+- ablkcipher_request_set_tfm(&ctx->req, private);
++ ablkcipher_request_set_tfm(&ctx->req, skcipher);
+ ablkcipher_request_set_callback(&ctx->req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ af_alg_complete, &ctx->completion);
+
+@@ -829,12 +956,24 @@ static int skcipher_accept_parent(void *private, struct sock *sk)
+ return 0;
+ }
+
++static int skcipher_accept_parent(void *private, struct sock *sk)
++{
++ struct skcipher_tfm *tfm = private;
++
++ if (!tfm->has_key)
++ return -ENOKEY;
++
++ return skcipher_accept_parent_nokey(private, sk);
++}
++
+ static const struct af_alg_type algif_type_skcipher = {
+ .bind = skcipher_bind,
+ .release = skcipher_release,
+ .setkey = skcipher_setkey,
+ .accept = skcipher_accept_parent,
++ .accept_nokey = skcipher_accept_parent_nokey,
+ .ops = &algif_skcipher_ops,
++ .ops_nokey = &algif_skcipher_ops_nokey,
+ .name = "skcipher",
+ .owner = THIS_MODULE
+ };
+diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
+index edf2e3ea1740..6a050e12fcdf 100644
+--- a/crypto/crypto_user.c
++++ b/crypto/crypto_user.c
+@@ -499,6 +499,7 @@ static int crypto_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
+ if (link->dump == NULL)
+ return -EINVAL;
+
++ down_read(&crypto_alg_sem);
+ list_for_each_entry(alg, &crypto_alg_list, cra_list)
+ dump_alloc += CRYPTO_REPORT_MAXSIZE;
+
+@@ -508,8 +509,11 @@ static int crypto_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
+ .done = link->done,
+ .min_dump_alloc = dump_alloc,
+ };
+- return netlink_dump_start(crypto_nlsk, skb, nlh, &c);
++ err = netlink_dump_start(crypto_nlsk, skb, nlh, &c);
+ }
++ up_read(&crypto_alg_sem);
++
++ return err;
+ }
+
+ err = nlmsg_parse(nlh, crypto_msg_min[type], attrs, CRYPTOCFGA_MAX,
+diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
+index e6ea912aee31..666fd8a1500a 100644
+--- a/drivers/ata/ahci.c
++++ b/drivers/ata/ahci.c
+@@ -262,6 +262,26 @@ static const struct pci_device_id ahci_pci_tbl[] = {
+ { PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */
+ { PCI_VDEVICE(INTEL, 0x3b2c), board_ahci }, /* PCH RAID */
+ { PCI_VDEVICE(INTEL, 0x3b2f), board_ahci }, /* PCH AHCI */
++ { PCI_VDEVICE(INTEL, 0x19b0), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19b1), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19b2), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19b3), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19b4), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19b5), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19b6), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19b7), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19bE), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19bF), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19c0), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19c1), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19c2), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19c3), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19c4), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19c5), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19c6), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19c7), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19cE), board_ahci }, /* DNV AHCI */
++ { PCI_VDEVICE(INTEL, 0x19cF), board_ahci }, /* DNV AHCI */
+ { PCI_VDEVICE(INTEL, 0x1c02), board_ahci }, /* CPT AHCI */
+ { PCI_VDEVICE(INTEL, 0x1c03), board_ahci }, /* CPT AHCI */
+ { PCI_VDEVICE(INTEL, 0x1c04), board_ahci }, /* CPT RAID */
+diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
+index 287c4ba0219f..49840264dd57 100644
+--- a/drivers/ata/libahci.c
++++ b/drivers/ata/libahci.c
+@@ -495,8 +495,8 @@ void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv)
+ }
+ }
+
+- /* fabricate port_map from cap.nr_ports */
+- if (!port_map) {
++ /* fabricate port_map from cap.nr_ports for < AHCI 1.3 */
++ if (!port_map && vers < 0x10300) {
+ port_map = (1 << ahci_nr_ports(cap)) - 1;
+ dev_warn(dev, "forcing PORTS_IMPL to 0x%x\n", port_map);
+
+diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
+index cdf6215a9a22..7dbba387d12a 100644
+--- a/drivers/ata/libata-sff.c
++++ b/drivers/ata/libata-sff.c
+@@ -997,12 +997,9 @@ static inline int ata_hsm_ok_in_wq(struct ata_port *ap,
+ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
+ {
+ struct ata_port *ap = qc->ap;
+- unsigned long flags;
+
+ if (ap->ops->error_handler) {
+ if (in_wq) {
+- spin_lock_irqsave(ap->lock, flags);
+-
+ /* EH might have kicked in while host lock is
+ * released.
+ */
+@@ -1014,8 +1011,6 @@ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
+ } else
+ ata_port_freeze(ap);
+ }
+-
+- spin_unlock_irqrestore(ap->lock, flags);
+ } else {
+ if (likely(!(qc->err_mask & AC_ERR_HSM)))
+ ata_qc_complete(qc);
+@@ -1024,10 +1019,8 @@ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
+ }
+ } else {
+ if (in_wq) {
+- spin_lock_irqsave(ap->lock, flags);
+ ata_sff_irq_on(ap);
+ ata_qc_complete(qc);
+- spin_unlock_irqrestore(ap->lock, flags);
+ } else
+ ata_qc_complete(qc);
+ }
+@@ -1048,9 +1041,10 @@ int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
+ {
+ struct ata_link *link = qc->dev->link;
+ struct ata_eh_info *ehi = &link->eh_info;
+- unsigned long flags = 0;
+ int poll_next;
+
++ lockdep_assert_held(ap->lock);
++
+ WARN_ON_ONCE((qc->flags & ATA_QCFLAG_ACTIVE) == 0);
+
+ /* Make sure ata_sff_qc_issue() does not throw things
+@@ -1112,14 +1106,6 @@ fsm_start:
+ }
+ }
+
+- /* Send the CDB (atapi) or the first data block (ata pio out).
+- * During the state transition, interrupt handler shouldn't
+- * be invoked before the data transfer is complete and
+- * hsm_task_state is changed. Hence, the following locking.
+- */
+- if (in_wq)
+- spin_lock_irqsave(ap->lock, flags);
+-
+ if (qc->tf.protocol == ATA_PROT_PIO) {
+ /* PIO data out protocol.
+ * send first data block.
+@@ -1135,9 +1121,6 @@ fsm_start:
+ /* send CDB */
+ atapi_send_cdb(ap, qc);
+
+- if (in_wq)
+- spin_unlock_irqrestore(ap->lock, flags);
+-
+ /* if polling, ata_sff_pio_task() handles the rest.
+ * otherwise, interrupt handler takes over from here.
+ */
+@@ -1361,12 +1344,14 @@ static void ata_sff_pio_task(struct work_struct *work)
+ u8 status;
+ int poll_next;
+
++ spin_lock_irq(ap->lock);
++
+ BUG_ON(ap->sff_pio_task_link == NULL);
+ /* qc can be NULL if timeout occurred */
+ qc = ata_qc_from_tag(ap, link->active_tag);
+ if (!qc) {
+ ap->sff_pio_task_link = NULL;
+- return;
++ goto out_unlock;
+ }
+
+ fsm_start:
+@@ -1381,11 +1366,14 @@ fsm_start:
+ */
+ status = ata_sff_busy_wait(ap, ATA_BUSY, 5);
+ if (status & ATA_BUSY) {
++ spin_unlock_irq(ap->lock);
+ ata_msleep(ap, 2);
++ spin_lock_irq(ap->lock);
++
+ status = ata_sff_busy_wait(ap, ATA_BUSY, 10);
+ if (status & ATA_BUSY) {
+ ata_sff_queue_pio_task(link, ATA_SHORT_PAUSE);
+- return;
++ goto out_unlock;
+ }
+ }
+
+@@ -1402,6 +1390,8 @@ fsm_start:
+ */
+ if (poll_next)
+ goto fsm_start;
++out_unlock:
++ spin_unlock_irq(ap->lock);
+ }
+
+ /**
+diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
+index 0f9a9dc06a83..fb16d812c8f5 100644
+--- a/drivers/crypto/atmel-aes.c
++++ b/drivers/crypto/atmel-aes.c
+@@ -260,7 +260,11 @@ static struct atmel_aes_dev *atmel_aes_find_dev(struct atmel_aes_ctx *ctx)
+
+ static int atmel_aes_hw_init(struct atmel_aes_dev *dd)
+ {
+- clk_prepare_enable(dd->iclk);
++ int err;
++
++ err = clk_prepare_enable(dd->iclk);
++ if (err)
++ return err;
+
+ if (!(dd->flags & AES_FLAGS_INIT)) {
+ atmel_aes_write(dd, AES_CR, AES_CR_SWRST);
+@@ -1320,7 +1324,6 @@ static int atmel_aes_probe(struct platform_device *pdev)
+ struct crypto_platform_data *pdata;
+ struct device *dev = &pdev->dev;
+ struct resource *aes_res;
+- unsigned long aes_phys_size;
+ int err;
+
+ pdata = pdev->dev.platform_data;
+@@ -1337,7 +1340,7 @@ static int atmel_aes_probe(struct platform_device *pdev)
+ goto aes_dd_err;
+ }
+
+- aes_dd = kzalloc(sizeof(struct atmel_aes_dev), GFP_KERNEL);
++ aes_dd = devm_kzalloc(&pdev->dev, sizeof(*aes_dd), GFP_KERNEL);
+ if (aes_dd == NULL) {
+ dev_err(dev, "unable to alloc data struct.\n");
+ err = -ENOMEM;
+@@ -1368,36 +1371,35 @@ static int atmel_aes_probe(struct platform_device *pdev)
+ goto res_err;
+ }
+ aes_dd->phys_base = aes_res->start;
+- aes_phys_size = resource_size(aes_res);
+
+ /* Get the IRQ */
+ aes_dd->irq = platform_get_irq(pdev, 0);
+ if (aes_dd->irq < 0) {
+ dev_err(dev, "no IRQ resource info\n");
+ err = aes_dd->irq;
+- goto aes_irq_err;
++ goto res_err;
+ }
+
+- err = request_irq(aes_dd->irq, atmel_aes_irq, IRQF_SHARED, "atmel-aes",
+- aes_dd);
++ err = devm_request_irq(&pdev->dev, aes_dd->irq, atmel_aes_irq,
++ IRQF_SHARED, "atmel-aes", aes_dd);
+ if (err) {
+ dev_err(dev, "unable to request aes irq.\n");
+- goto aes_irq_err;
++ goto res_err;
+ }
+
+ /* Initializing the clock */
+- aes_dd->iclk = clk_get(&pdev->dev, "aes_clk");
++ aes_dd->iclk = devm_clk_get(&pdev->dev, "aes_clk");
+ if (IS_ERR(aes_dd->iclk)) {
+ dev_err(dev, "clock initialization failed.\n");
+ err = PTR_ERR(aes_dd->iclk);
+- goto clk_err;
++ goto res_err;
+ }
+
+- aes_dd->io_base = ioremap(aes_dd->phys_base, aes_phys_size);
++ aes_dd->io_base = devm_ioremap_resource(&pdev->dev, aes_res);
+ if (!aes_dd->io_base) {
+ dev_err(dev, "can't ioremap\n");
+ err = -ENOMEM;
+- goto aes_io_err;
++ goto res_err;
+ }
+
+ atmel_aes_hw_version_init(aes_dd);
+@@ -1434,17 +1436,9 @@ err_algs:
+ err_aes_dma:
+ atmel_aes_buff_cleanup(aes_dd);
+ err_aes_buff:
+- iounmap(aes_dd->io_base);
+-aes_io_err:
+- clk_put(aes_dd->iclk);
+-clk_err:
+- free_irq(aes_dd->irq, aes_dd);
+-aes_irq_err:
+ res_err:
+ tasklet_kill(&aes_dd->done_task);
+ tasklet_kill(&aes_dd->queue_task);
+- kfree(aes_dd);
+- aes_dd = NULL;
+ aes_dd_err:
+ dev_err(dev, "initialization failed.\n");
+
+@@ -1469,16 +1463,6 @@ static int atmel_aes_remove(struct platform_device *pdev)
+
+ atmel_aes_dma_cleanup(aes_dd);
+
+- iounmap(aes_dd->io_base);
+-
+- clk_put(aes_dd->iclk);
+-
+- if (aes_dd->irq > 0)
+- free_irq(aes_dd->irq, aes_dd);
+-
+- kfree(aes_dd);
+- aes_dd = NULL;
+-
+ return 0;
+ }
+
+diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
+index 5b35433c5399..a71c97c03c39 100644
+--- a/drivers/crypto/atmel-sha.c
++++ b/drivers/crypto/atmel-sha.c
+@@ -783,7 +783,7 @@ static void atmel_sha_finish_req(struct ahash_request *req, int err)
+ dd->flags &= ~(SHA_FLAGS_BUSY | SHA_FLAGS_FINAL | SHA_FLAGS_CPU |
+ SHA_FLAGS_DMA_READY | SHA_FLAGS_OUTPUT_READY);
+
+- clk_disable_unprepare(dd->iclk);
++ clk_disable(dd->iclk);
+
+ if (req->base.complete)
+ req->base.complete(&req->base, err);
+@@ -794,7 +794,11 @@ static void atmel_sha_finish_req(struct ahash_request *req, int err)
+
+ static int atmel_sha_hw_init(struct atmel_sha_dev *dd)
+ {
+- clk_prepare_enable(dd->iclk);
++ int err;
++
++ err = clk_enable(dd->iclk);
++ if (err)
++ return err;
+
+ if (!(SHA_FLAGS_INIT & dd->flags)) {
+ atmel_sha_write(dd, SHA_CR, SHA_CR_SWRST);
+@@ -819,7 +823,7 @@ static void atmel_sha_hw_version_init(struct atmel_sha_dev *dd)
+ dev_info(dd->dev,
+ "version: 0x%x\n", dd->hw_version);
+
+- clk_disable_unprepare(dd->iclk);
++ clk_disable(dd->iclk);
+ }
+
+ static int atmel_sha_handle_queue(struct atmel_sha_dev *dd,
+@@ -1345,11 +1349,9 @@ static int atmel_sha_probe(struct platform_device *pdev)
+ struct crypto_platform_data *pdata;
+ struct device *dev = &pdev->dev;
+ struct resource *sha_res;
+- unsigned long sha_phys_size;
+ int err;
+
+- sha_dd = devm_kzalloc(&pdev->dev, sizeof(struct atmel_sha_dev),
+- GFP_KERNEL);
++ sha_dd = devm_kzalloc(&pdev->dev, sizeof(*sha_dd), GFP_KERNEL);
+ if (sha_dd == NULL) {
+ dev_err(dev, "unable to alloc data struct.\n");
+ err = -ENOMEM;
+@@ -1378,7 +1380,6 @@ static int atmel_sha_probe(struct platform_device *pdev)
+ goto res_err;
+ }
+ sha_dd->phys_base = sha_res->start;
+- sha_phys_size = resource_size(sha_res);
+
+ /* Get the IRQ */
+ sha_dd->irq = platform_get_irq(pdev, 0);
+@@ -1388,28 +1389,32 @@ static int atmel_sha_probe(struct platform_device *pdev)
+ goto res_err;
+ }
+
+- err = request_irq(sha_dd->irq, atmel_sha_irq, IRQF_SHARED, "atmel-sha",
+- sha_dd);
++ err = devm_request_irq(&pdev->dev, sha_dd->irq, atmel_sha_irq,
++ IRQF_SHARED, "atmel-sha", sha_dd);
+ if (err) {
+ dev_err(dev, "unable to request sha irq.\n");
+ goto res_err;
+ }
+
+ /* Initializing the clock */
+- sha_dd->iclk = clk_get(&pdev->dev, "sha_clk");
++ sha_dd->iclk = devm_clk_get(&pdev->dev, "sha_clk");
+ if (IS_ERR(sha_dd->iclk)) {
+ dev_err(dev, "clock initialization failed.\n");
+ err = PTR_ERR(sha_dd->iclk);
+- goto clk_err;
++ goto res_err;
+ }
+
+- sha_dd->io_base = ioremap(sha_dd->phys_base, sha_phys_size);
++ sha_dd->io_base = devm_ioremap_resource(&pdev->dev, sha_res);
+ if (!sha_dd->io_base) {
+ dev_err(dev, "can't ioremap\n");
+ err = -ENOMEM;
+- goto sha_io_err;
++ goto res_err;
+ }
+
++ err = clk_prepare(sha_dd->iclk);
++ if (err)
++ goto res_err;
++
+ atmel_sha_hw_version_init(sha_dd);
+
+ atmel_sha_get_cap(sha_dd);
+@@ -1421,12 +1426,12 @@ static int atmel_sha_probe(struct platform_device *pdev)
+ if (IS_ERR(pdata)) {
+ dev_err(&pdev->dev, "platform data not available\n");
+ err = PTR_ERR(pdata);
+- goto err_pdata;
++ goto iclk_unprepare;
+ }
+ }
+ if (!pdata->dma_slave) {
+ err = -ENXIO;
+- goto err_pdata;
++ goto iclk_unprepare;
+ }
+ err = atmel_sha_dma_init(sha_dd, pdata);
+ if (err)
+@@ -1457,12 +1462,8 @@ err_algs:
+ if (sha_dd->caps.has_dma)
+ atmel_sha_dma_cleanup(sha_dd);
+ err_sha_dma:
+-err_pdata:
+- iounmap(sha_dd->io_base);
+-sha_io_err:
+- clk_put(sha_dd->iclk);
+-clk_err:
+- free_irq(sha_dd->irq, sha_dd);
++iclk_unprepare:
++ clk_unprepare(sha_dd->iclk);
+ res_err:
+ tasklet_kill(&sha_dd->done_task);
+ sha_dd_err:
+@@ -1489,6 +1490,8 @@ static int atmel_sha_remove(struct platform_device *pdev)
+ if (sha_dd->caps.has_dma)
+ atmel_sha_dma_cleanup(sha_dd);
+
++ clk_unprepare(sha_dd->iclk);
++
+ iounmap(sha_dd->io_base);
+
+ clk_put(sha_dd->iclk);
+diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c
+index ca2999709eb4..2c7a628d0375 100644
+--- a/drivers/crypto/atmel-tdes.c
++++ b/drivers/crypto/atmel-tdes.c
+@@ -218,7 +218,11 @@ static struct atmel_tdes_dev *atmel_tdes_find_dev(struct atmel_tdes_ctx *ctx)
+
+ static int atmel_tdes_hw_init(struct atmel_tdes_dev *dd)
+ {
+- clk_prepare_enable(dd->iclk);
++ int err;
++
++ err = clk_prepare_enable(dd->iclk);
++ if (err)
++ return err;
+
+ if (!(dd->flags & TDES_FLAGS_INIT)) {
+ atmel_tdes_write(dd, TDES_CR, TDES_CR_SWRST);
+@@ -1355,7 +1359,6 @@ static int atmel_tdes_probe(struct platform_device *pdev)
+ struct crypto_platform_data *pdata;
+ struct device *dev = &pdev->dev;
+ struct resource *tdes_res;
+- unsigned long tdes_phys_size;
+ int err;
+
+ tdes_dd = devm_kmalloc(&pdev->dev, sizeof(*tdes_dd), GFP_KERNEL);
+@@ -1389,7 +1392,6 @@ static int atmel_tdes_probe(struct platform_device *pdev)
+ goto res_err;
+ }
+ tdes_dd->phys_base = tdes_res->start;
+- tdes_phys_size = resource_size(tdes_res);
+
+ /* Get the IRQ */
+ tdes_dd->irq = platform_get_irq(pdev, 0);
+@@ -1399,26 +1401,26 @@ static int atmel_tdes_probe(struct platform_device *pdev)
+ goto res_err;
+ }
+
+- err = request_irq(tdes_dd->irq, atmel_tdes_irq, IRQF_SHARED,
+- "atmel-tdes", tdes_dd);
++ err = devm_request_irq(&pdev->dev, tdes_dd->irq, atmel_tdes_irq,
++ IRQF_SHARED, "atmel-tdes", tdes_dd);
+ if (err) {
+ dev_err(dev, "unable to request tdes irq.\n");
+- goto tdes_irq_err;
++ goto res_err;
+ }
+
+ /* Initializing the clock */
+- tdes_dd->iclk = clk_get(&pdev->dev, "tdes_clk");
++ tdes_dd->iclk = devm_clk_get(&pdev->dev, "tdes_clk");
+ if (IS_ERR(tdes_dd->iclk)) {
+ dev_err(dev, "clock initialization failed.\n");
+ err = PTR_ERR(tdes_dd->iclk);
+- goto clk_err;
++ goto res_err;
+ }
+
+- tdes_dd->io_base = ioremap(tdes_dd->phys_base, tdes_phys_size);
++ tdes_dd->io_base = devm_ioremap_resource(&pdev->dev, tdes_res);
+ if (!tdes_dd->io_base) {
+ dev_err(dev, "can't ioremap\n");
+ err = -ENOMEM;
+- goto tdes_io_err;
++ goto res_err;
+ }
+
+ atmel_tdes_hw_version_init(tdes_dd);
+@@ -1474,12 +1476,6 @@ err_tdes_dma:
+ err_pdata:
+ atmel_tdes_buff_cleanup(tdes_dd);
+ err_tdes_buff:
+- iounmap(tdes_dd->io_base);
+-tdes_io_err:
+- clk_put(tdes_dd->iclk);
+-clk_err:
+- free_irq(tdes_dd->irq, tdes_dd);
+-tdes_irq_err:
+ res_err:
+ tasklet_kill(&tdes_dd->done_task);
+ tasklet_kill(&tdes_dd->queue_task);
+@@ -1510,13 +1506,6 @@ static int atmel_tdes_remove(struct platform_device *pdev)
+
+ atmel_tdes_buff_cleanup(tdes_dd);
+
+- iounmap(tdes_dd->io_base);
+-
+- clk_put(tdes_dd->iclk);
+-
+- if (tdes_dd->irq >= 0)
+- free_irq(tdes_dd->irq, tdes_dd);
+-
+ return 0;
+ }
+
+diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
+index 303d937d63c7..ebffc744cb1b 100644
+--- a/drivers/dma/dw/core.c
++++ b/drivers/dma/dw/core.c
+@@ -156,7 +156,6 @@ static void dwc_initialize(struct dw_dma_chan *dwc)
+
+ /* Enable interrupts */
+ channel_set_bit(dw, MASK.XFER, dwc->mask);
+- channel_set_bit(dw, MASK.BLOCK, dwc->mask);
+ channel_set_bit(dw, MASK.ERROR, dwc->mask);
+
+ dwc->initialized = true;
+@@ -588,6 +587,9 @@ static void dwc_handle_cyclic(struct dw_dma *dw, struct dw_dma_chan *dwc,
+
+ spin_unlock_irqrestore(&dwc->lock, flags);
+ }
++
++ /* Re-enable interrupts */
++ channel_set_bit(dw, MASK.BLOCK, dwc->mask);
+ }
+
+ /* ------------------------------------------------------------------------- */
+@@ -618,11 +620,8 @@ static void dw_dma_tasklet(unsigned long data)
+ dwc_scan_descriptors(dw, dwc);
+ }
+
+- /*
+- * Re-enable interrupts.
+- */
++ /* Re-enable interrupts */
+ channel_set_bit(dw, MASK.XFER, dw->all_chan_mask);
+- channel_set_bit(dw, MASK.BLOCK, dw->all_chan_mask);
+ channel_set_bit(dw, MASK.ERROR, dw->all_chan_mask);
+ }
+
+@@ -1256,6 +1255,7 @@ static void dwc_free_chan_resources(struct dma_chan *chan)
+ int dw_dma_cyclic_start(struct dma_chan *chan)
+ {
+ struct dw_dma_chan *dwc = to_dw_dma_chan(chan);
++ struct dw_dma *dw = to_dw_dma(chan->device);
+ unsigned long flags;
+
+ if (!test_bit(DW_DMA_IS_CYCLIC, &dwc->flags)) {
+@@ -1264,7 +1264,12 @@ int dw_dma_cyclic_start(struct dma_chan *chan)
+ }
+
+ spin_lock_irqsave(&dwc->lock, flags);
++
++ /* Enable interrupts to perform cyclic transfer */
++ channel_set_bit(dw, MASK.BLOCK, dwc->mask);
++
+ dwc_dostart(dwc, dwc->cdesc->desc[0]);
++
+ spin_unlock_irqrestore(&dwc->lock, flags);
+
+ return 0;
+diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+index d2cd8d5b27a1..82f8e20cca74 100644
+--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
++++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+@@ -207,7 +207,12 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
+ gpio = *data++;
+
+ /* pull up/down */
+- action = *data++;
++ action = *data++ & 1;
++
++ if (gpio >= ARRAY_SIZE(gtable)) {
++ DRM_DEBUG_KMS("unknown gpio %u\n", gpio);
++ goto out;
++ }
+
+ function = gtable[gpio].function_reg;
+ pad = gtable[gpio].pad_reg;
+@@ -226,6 +231,7 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
+ vlv_gpio_nc_write(dev_priv, pad, val);
+ mutex_unlock(&dev_priv->dpio_lock);
+
++out:
+ return data;
+ }
+
+diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c
+index 7354a4cda59d..3aefaa058f0c 100644
+--- a/drivers/gpu/drm/qxl/qxl_ioctl.c
++++ b/drivers/gpu/drm/qxl/qxl_ioctl.c
+@@ -168,7 +168,8 @@ static int qxl_process_single_command(struct qxl_device *qdev,
+ cmd->command_size))
+ return -EFAULT;
+
+- reloc_info = kmalloc(sizeof(struct qxl_reloc_info) * cmd->relocs_num, GFP_KERNEL);
++ reloc_info = kmalloc_array(cmd->relocs_num,
++ sizeof(struct qxl_reloc_info), GFP_KERNEL);
+ if (!reloc_info)
+ return -ENOMEM;
+
+diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c
+index c507896aca45..197b157b73d0 100644
+--- a/drivers/gpu/drm/radeon/radeon_sa.c
++++ b/drivers/gpu/drm/radeon/radeon_sa.c
+@@ -349,8 +349,13 @@ int radeon_sa_bo_new(struct radeon_device *rdev,
+ /* see if we can skip over some allocations */
+ } while (radeon_sa_bo_next_hole(sa_manager, fences, tries));
+
++ for (i = 0; i < RADEON_NUM_RINGS; ++i)
++ radeon_fence_ref(fences[i]);
++
+ spin_unlock(&sa_manager->wq.lock);
+ r = radeon_fence_wait_any(rdev, fences, false);
++ for (i = 0; i < RADEON_NUM_RINGS; ++i)
++ radeon_fence_unref(&fences[i]);
+ spin_lock(&sa_manager->wq.lock);
+ /* if we have nothing to wait for block */
+ if (r == -ENOENT) {
+diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
+index edafd3c2b170..f5c0590bbf73 100644
+--- a/drivers/gpu/drm/radeon/radeon_ttm.c
++++ b/drivers/gpu/drm/radeon/radeon_ttm.c
+@@ -758,7 +758,7 @@ static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
+ 0, PAGE_SIZE,
+ PCI_DMA_BIDIRECTIONAL);
+ if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) {
+- while (--i) {
++ while (i--) {
+ pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
+ PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
+ gtt->ttm.dma_address[i] = 0;
+diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
+index c32a934f7693..353e2ab090ee 100644
+--- a/drivers/infiniband/ulp/isert/ib_isert.c
++++ b/drivers/infiniband/ulp/isert/ib_isert.c
+@@ -1349,7 +1349,7 @@ sequence_cmd:
+ if (!rc && dump_payload == false && unsol_data)
+ iscsit_set_unsoliticed_dataout(cmd);
+ else if (dump_payload && imm_data)
+- target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
++ target_put_sess_cmd(&cmd->se_cmd);
+
+ return 0;
+ }
+@@ -1774,7 +1774,7 @@ isert_put_cmd(struct isert_cmd *isert_cmd, bool comp_err)
+ cmd->se_cmd.t_state == TRANSPORT_WRITE_PENDING) {
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+
+- target_put_sess_cmd(se_cmd->se_sess, se_cmd);
++ target_put_sess_cmd(se_cmd);
+ }
+ }
+
+@@ -1947,7 +1947,7 @@ isert_completion_rdma_read(struct iser_tx_desc *tx_desc,
+ spin_unlock_bh(&cmd->istate_lock);
+
+ if (ret) {
+- target_put_sess_cmd(se_cmd->se_sess, se_cmd);
++ target_put_sess_cmd(se_cmd);
+ transport_send_check_condition_and_sense(se_cmd,
+ se_cmd->pi_err, 0);
+ } else {
+diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
+index 9b84b4c0a000..6fbc7bc824d2 100644
+--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
++++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
+@@ -1334,7 +1334,7 @@ static int srpt_abort_cmd(struct srpt_send_ioctx *ioctx)
+
+ BUG_ON(ch->sess == NULL);
+
+- target_put_sess_cmd(ch->sess, &ioctx->cmd);
++ target_put_sess_cmd(&ioctx->cmd);
+ goto out;
+ }
+
+@@ -1365,11 +1365,11 @@ static int srpt_abort_cmd(struct srpt_send_ioctx *ioctx)
+ * not been received in time.
+ */
+ srpt_unmap_sg_to_ib_sge(ioctx->ch, ioctx);
+- target_put_sess_cmd(ioctx->ch->sess, &ioctx->cmd);
++ target_put_sess_cmd(&ioctx->cmd);
+ break;
+ case SRPT_STATE_MGMT_RSP_SENT:
+ srpt_set_cmd_state(ioctx, SRPT_STATE_DONE);
+- target_put_sess_cmd(ioctx->ch->sess, &ioctx->cmd);
++ target_put_sess_cmd(&ioctx->cmd);
+ break;
+ default:
+ WARN(1, "Unexpected command state (%d)", state);
+@@ -1679,7 +1679,7 @@ static int srpt_check_stop_free(struct se_cmd *cmd)
+ struct srpt_send_ioctx *ioctx = container_of(cmd,
+ struct srpt_send_ioctx, cmd);
+
+- return target_put_sess_cmd(ioctx->ch->sess, &ioctx->cmd);
++ return target_put_sess_cmd(&ioctx->cmd);
+ }
+
+ /**
+@@ -3074,7 +3074,7 @@ static void srpt_queue_response(struct se_cmd *cmd)
+ ioctx->tag);
+ srpt_unmap_sg_to_ib_sge(ch, ioctx);
+ srpt_set_cmd_state(ioctx, SRPT_STATE_DONE);
+- target_put_sess_cmd(ioctx->ch->sess, &ioctx->cmd);
++ target_put_sess_cmd(&ioctx->cmd);
+ }
+ }
+
+diff --git a/drivers/input/mouse/vmmouse.c b/drivers/input/mouse/vmmouse.c
+index e272f06258ce..a3f0f5a47490 100644
+--- a/drivers/input/mouse/vmmouse.c
++++ b/drivers/input/mouse/vmmouse.c
+@@ -458,8 +458,6 @@ int vmmouse_init(struct psmouse *psmouse)
+ priv->abs_dev = abs_dev;
+ psmouse->private = priv;
+
+- input_set_capability(rel_dev, EV_REL, REL_WHEEL);
+-
+ /* Set up and register absolute device */
+ snprintf(priv->phys, sizeof(priv->phys), "%s/input1",
+ psmouse->ps2dev.serio->phys);
+@@ -475,10 +473,6 @@ int vmmouse_init(struct psmouse *psmouse)
+ abs_dev->id.version = psmouse->model;
+ abs_dev->dev.parent = &psmouse->ps2dev.serio->dev;
+
+- error = input_register_device(priv->abs_dev);
+- if (error)
+- goto init_fail;
+-
+ /* Set absolute device capabilities */
+ input_set_capability(abs_dev, EV_KEY, BTN_LEFT);
+ input_set_capability(abs_dev, EV_KEY, BTN_RIGHT);
+@@ -488,6 +482,13 @@ int vmmouse_init(struct psmouse *psmouse)
+ input_set_abs_params(abs_dev, ABS_X, 0, VMMOUSE_MAX_X, 0, 0);
+ input_set_abs_params(abs_dev, ABS_Y, 0, VMMOUSE_MAX_Y, 0, 0);
+
++ error = input_register_device(priv->abs_dev);
++ if (error)
++ goto init_fail;
++
++ /* Add wheel capability to the relative device */
++ input_set_capability(rel_dev, EV_REL, REL_WHEEL);
++
+ psmouse->protocol_handler = vmmouse_process_byte;
+ psmouse->disconnect = vmmouse_disconnect;
+ psmouse->reconnect = vmmouse_reconnect;
+diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
+index 9847613085e1..5a2ec39e1fd9 100644
+--- a/drivers/iommu/dmar.c
++++ b/drivers/iommu/dmar.c
+@@ -1342,7 +1342,7 @@ void dmar_disable_qi(struct intel_iommu *iommu)
+
+ raw_spin_lock_irqsave(&iommu->register_lock, flags);
+
+- sts = dmar_readq(iommu->reg + DMAR_GSTS_REG);
++ sts = readl(iommu->reg + DMAR_GSTS_REG);
+ if (!(sts & DMA_GSTS_QIES))
+ goto end;
+
+diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
+index 5709ae9c3e77..04b39be8f1f3 100644
+--- a/drivers/iommu/intel_irq_remapping.c
++++ b/drivers/iommu/intel_irq_remapping.c
+@@ -544,7 +544,7 @@ static void iommu_disable_irq_remapping(struct intel_iommu *iommu)
+
+ raw_spin_lock_irqsave(&iommu->register_lock, flags);
+
+- sts = dmar_readq(iommu->reg + DMAR_GSTS_REG);
++ sts = readl(iommu->reg + DMAR_GSTS_REG);
+ if (!(sts & DMA_GSTS_IRES))
+ goto end;
+
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index 72ba774df7a7..bd744e31c434 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -214,6 +214,8 @@ static void bond_uninit(struct net_device *bond_dev);
+ static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev,
+ struct rtnl_link_stats64 *stats);
+ static void bond_slave_arr_handler(struct work_struct *work);
++static bool bond_time_in_interval(struct bonding *bond, unsigned long last_act,
++ int mod);
+
+ /*---------------------------- General routines -----------------------------*/
+
+@@ -2397,7 +2399,7 @@ int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond,
+ struct slave *slave)
+ {
+ struct arphdr *arp = (struct arphdr *)skb->data;
+- struct slave *curr_active_slave;
++ struct slave *curr_active_slave, *curr_arp_slave;
+ unsigned char *arp_ptr;
+ __be32 sip, tip;
+ int alen, is_arp = skb->protocol == __cpu_to_be16(ETH_P_ARP);
+@@ -2444,26 +2446,41 @@ int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond,
+ &sip, &tip);
+
+ curr_active_slave = rcu_dereference(bond->curr_active_slave);
++ curr_arp_slave = rcu_dereference(bond->current_arp_slave);
+
+- /* Backup slaves won't see the ARP reply, but do come through
+- * here for each ARP probe (so we swap the sip/tip to validate
+- * the probe). In a "redundant switch, common router" type of
+- * configuration, the ARP probe will (hopefully) travel from
+- * the active, through one switch, the router, then the other
+- * switch before reaching the backup.
++ /* We 'trust' the received ARP enough to validate it if:
++ *
++ * (a) the slave receiving the ARP is active (which includes the
++ * current ARP slave, if any), or
++ *
++ * (b) the receiving slave isn't active, but there is a currently
++ * active slave and it received valid arp reply(s) after it became
++ * the currently active slave, or
++ *
++ * (c) there is an ARP slave that sent an ARP during the prior ARP
++ * interval, and we receive an ARP reply on any slave. We accept
++ * these because switch FDB update delays may deliver the ARP
++ * reply to a slave other than the sender of the ARP request.
+ *
+- * We 'trust' the arp requests if there is an active slave and
+- * it received valid arp reply(s) after it became active. This
+- * is done to avoid endless looping when we can't reach the
++ * Note: for (b), backup slaves are receiving the broadcast ARP
++ * request, not a reply. This request passes from the sending
++ * slave through the L2 switch(es) to the receiving slave. Since
++ * this is checking the request, sip/tip are swapped for
++ * validation.
++ *
++ * This is done to avoid endless looping when we can't reach the
+ * arp_ip_target and fool ourselves with our own arp requests.
+ */
+-
+ if (bond_is_active_slave(slave))
+ bond_validate_arp(bond, slave, sip, tip);
+ else if (curr_active_slave &&
+ time_after(slave_last_rx(bond, curr_active_slave),
+ curr_active_slave->last_link_up))
+ bond_validate_arp(bond, slave, tip, sip);
++ else if (curr_arp_slave && (arp->ar_op == htons(ARPOP_REPLY)) &&
++ bond_time_in_interval(bond,
++ dev_trans_start(curr_arp_slave->dev), 1))
++ bond_validate_arp(bond, slave, sip, tip);
+
+ out_unlock:
+ if (arp != (struct arphdr *)skb->data)
+diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
+index 0d8af5bb5907..d5415205779f 100644
+--- a/drivers/net/ethernet/broadcom/tg3.c
++++ b/drivers/net/ethernet/broadcom/tg3.c
+@@ -7833,6 +7833,14 @@ static int tigon3_dma_hwbug_workaround(struct tg3_napi *tnapi,
+ return ret;
+ }
+
++static bool tg3_tso_bug_gso_check(struct tg3_napi *tnapi, struct sk_buff *skb)
++{
++ /* Check if we will never have enough descriptors,
++ * as gso_segs can be more than current ring size
++ */
++ return skb_shinfo(skb)->gso_segs < tnapi->tx_pending / 3;
++}
++
+ static netdev_tx_t tg3_start_xmit(struct sk_buff *, struct net_device *);
+
+ /* Use GSO to workaround all TSO packets that meet HW bug conditions
+@@ -7936,14 +7944,19 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
+ * vlan encapsulated.
+ */
+ if (skb->protocol == htons(ETH_P_8021Q) ||
+- skb->protocol == htons(ETH_P_8021AD))
+- return tg3_tso_bug(tp, tnapi, txq, skb);
++ skb->protocol == htons(ETH_P_8021AD)) {
++ if (tg3_tso_bug_gso_check(tnapi, skb))
++ return tg3_tso_bug(tp, tnapi, txq, skb);
++ goto drop;
++ }
+
+ if (!skb_is_gso_v6(skb)) {
+ if (unlikely((ETH_HLEN + hdr_len) > 80) &&
+- tg3_flag(tp, TSO_BUG))
+- return tg3_tso_bug(tp, tnapi, txq, skb);
+-
++ tg3_flag(tp, TSO_BUG)) {
++ if (tg3_tso_bug_gso_check(tnapi, skb))
++ return tg3_tso_bug(tp, tnapi, txq, skb);
++ goto drop;
++ }
+ ip_csum = iph->check;
+ ip_tot_len = iph->tot_len;
+ iph->check = 0;
+@@ -8075,7 +8088,7 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
+ if (would_hit_hwbug) {
+ tg3_tx_skb_unmap(tnapi, tnapi->tx_prod, i);
+
+- if (mss) {
++ if (mss && tg3_tso_bug_gso_check(tnapi, skb)) {
+ /* If it's a TSO packet, do GSO instead of
+ * allocating and copying to a large linear SKB
+ */
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_clock.c b/drivers/net/ethernet/mellanox/mlx4/en_clock.c
+index 8a083d73efdb..dae2ebb53af7 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_clock.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_clock.c
+@@ -236,6 +236,24 @@ static const struct ptp_clock_info mlx4_en_ptp_clock_info = {
+ .enable = mlx4_en_phc_enable,
+ };
+
++#define MLX4_EN_WRAP_AROUND_SEC 10ULL
++
++/* This function calculates the max shift that enables the user range
++ * of MLX4_EN_WRAP_AROUND_SEC values in the cycles register.
++ */
++static u32 freq_to_shift(u16 freq)
++{
++ u32 freq_khz = freq * 1000;
++ u64 max_val_cycles = freq_khz * 1000 * MLX4_EN_WRAP_AROUND_SEC;
++ u64 max_val_cycles_rounded = is_power_of_2(max_val_cycles + 1) ?
++ max_val_cycles : roundup_pow_of_two(max_val_cycles) - 1;
++ /* calculate max possible multiplier in order to fit in 64bit */
++ u64 max_mul = div_u64(0xffffffffffffffffULL, max_val_cycles_rounded);
++
++ /* This comes from the reverse of clocksource_khz2mult */
++ return ilog2(div_u64(max_mul * freq_khz, 1000000));
++}
++
+ void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev)
+ {
+ struct mlx4_dev *dev = mdev->dev;
+@@ -247,12 +265,7 @@ void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev)
+ memset(&mdev->cycles, 0, sizeof(mdev->cycles));
+ mdev->cycles.read = mlx4_en_read_clock;
+ mdev->cycles.mask = CLOCKSOURCE_MASK(48);
+- /* Using shift to make calculation more accurate. Since current HW
+- * clock frequency is 427 MHz, and cycles are given using a 48 bits
+- * register, the biggest shift when calculating using u64, is 14
+- * (max_cycles * multiplier < 2^64)
+- */
+- mdev->cycles.shift = 14;
++ mdev->cycles.shift = freq_to_shift(dev->caps.hca_core_clock);
+ mdev->cycles.mult =
+ clocksource_khz2mult(1000 * dev->caps.hca_core_clock, mdev->cycles.shift);
+ mdev->nominal_c_mult = mdev->cycles.mult;
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+index a5a0b8420d26..e9189597000d 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+@@ -2330,8 +2330,6 @@ out:
+ /* set offloads */
+ priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
+ NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
+- priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
+- priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL;
+ }
+
+ static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
+@@ -2342,8 +2340,6 @@ static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
+ /* unset offloads */
+ priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
+ NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
+- priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL;
+- priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL;
+
+ ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
+ VXLAN_STEER_BY_OUTER_MAC, 0);
+@@ -2940,6 +2936,11 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
+ priv->rss_hash_fn = ETH_RSS_HASH_TOP;
+ }
+
++ if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
++ dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
++ dev->features |= NETIF_F_GSO_UDP_TUNNEL;
++ }
++
+ mdev->pndev[port] = dev;
+ mdev->upper[port] = NULL;
+
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_port.c b/drivers/net/ethernet/mellanox/mlx4/en_port.c
+index 0a56f010c846..760a8b387912 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_port.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_port.c
+@@ -223,11 +223,11 @@ int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
+ stats->collisions = 0;
+ stats->rx_dropped = be32_to_cpu(mlx4_en_stats->RDROP);
+ stats->rx_length_errors = be32_to_cpu(mlx4_en_stats->RdropLength);
+- stats->rx_over_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
++ stats->rx_over_errors = 0;
+ stats->rx_crc_errors = be32_to_cpu(mlx4_en_stats->RCRC);
+ stats->rx_frame_errors = 0;
+ stats->rx_fifo_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+- stats->rx_missed_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
++ stats->rx_missed_errors = 0;
+ stats->tx_aborted_errors = 0;
+ stats->tx_carrier_errors = 0;
+ stats->tx_fifo_errors = 0;
+diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
+index 73b6fc21ea00..4fedf7fa72c4 100644
+--- a/drivers/net/ethernet/rocker/rocker.c
++++ b/drivers/net/ethernet/rocker/rocker.c
+@@ -3384,12 +3384,14 @@ static void rocker_port_fdb_learn_work(struct work_struct *work)
+ info.addr = lw->addr;
+ info.vid = lw->vid;
+
++ rtnl_lock();
+ if (learned && removing)
+ call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL,
+ lw->dev, &info.info);
+ else if (learned && !removing)
+ call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD,
+ lw->dev, &info.info);
++ rtnl_unlock();
+
+ kfree(work);
+ }
+diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c
+index 00cb41e71312..c56cf0b86f2c 100644
+--- a/drivers/net/phy/dp83640.c
++++ b/drivers/net/phy/dp83640.c
+@@ -833,6 +833,11 @@ static void decode_rxts(struct dp83640_private *dp83640,
+ struct skb_shared_hwtstamps *shhwtstamps = NULL;
+ struct sk_buff *skb;
+ unsigned long flags;
++ u8 overflow;
++
++ overflow = (phy_rxts->ns_hi >> 14) & 0x3;
++ if (overflow)
++ pr_debug("rx timestamp queue overflow, count %d\n", overflow);
+
+ spin_lock_irqsave(&dp83640->rx_lock, flags);
+
+@@ -875,6 +880,7 @@ static void decode_txts(struct dp83640_private *dp83640,
+ struct skb_shared_hwtstamps shhwtstamps;
+ struct sk_buff *skb;
+ u64 ns;
++ u8 overflow;
+
+ /* We must already have the skb that triggered this. */
+
+@@ -884,6 +890,17 @@ static void decode_txts(struct dp83640_private *dp83640,
+ pr_debug("have timestamp but tx_queue empty\n");
+ return;
+ }
++
++ overflow = (phy_txts->ns_hi >> 14) & 0x3;
++ if (overflow) {
++ pr_debug("tx timestamp queue overflow, count %d\n", overflow);
++ while (skb) {
++ skb_complete_tx_timestamp(skb, NULL);
++ skb = skb_dequeue(&dp83640->tx_queue);
++ }
++ return;
++ }
++
+ ns = phy2txts(phy_txts);
+ memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+ shhwtstamps.hwtstamp = ns_to_ktime(ns);
+diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
+index 9c8fabed4444..d1c4bc1c4df0 100644
+--- a/drivers/net/ppp/pppoe.c
++++ b/drivers/net/ppp/pppoe.c
+@@ -395,6 +395,8 @@ static int pppoe_rcv_core(struct sock *sk, struct sk_buff *skb)
+
+ if (!__pppoe_xmit(sk_pppox(relay_po), skb))
+ goto abort_put;
++
++ sock_put(sk_pppox(relay_po));
+ } else {
+ if (sock_queue_rcv_skb(sk, skb))
+ goto abort_kfree;
+diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
+index 0bacabfa486e..b35199cc8f34 100644
+--- a/drivers/net/ppp/pptp.c
++++ b/drivers/net/ppp/pptp.c
+@@ -131,24 +131,27 @@ static int lookup_chan_dst(u16 call_id, __be32 d_addr)
+ return i < MAX_CALLID;
+ }
+
+-static int add_chan(struct pppox_sock *sock)
++static int add_chan(struct pppox_sock *sock,
++ struct pptp_addr *sa)
+ {
+ static int call_id;
+
+ spin_lock(&chan_lock);
+- if (!sock->proto.pptp.src_addr.call_id) {
++ if (!sa->call_id) {
+ call_id = find_next_zero_bit(callid_bitmap, MAX_CALLID, call_id + 1);
+ if (call_id == MAX_CALLID) {
+ call_id = find_next_zero_bit(callid_bitmap, MAX_CALLID, 1);
+ if (call_id == MAX_CALLID)
+ goto out_err;
+ }
+- sock->proto.pptp.src_addr.call_id = call_id;
+- } else if (test_bit(sock->proto.pptp.src_addr.call_id, callid_bitmap))
++ sa->call_id = call_id;
++ } else if (test_bit(sa->call_id, callid_bitmap)) {
+ goto out_err;
++ }
+
+- set_bit(sock->proto.pptp.src_addr.call_id, callid_bitmap);
+- rcu_assign_pointer(callid_sock[sock->proto.pptp.src_addr.call_id], sock);
++ sock->proto.pptp.src_addr = *sa;
++ set_bit(sa->call_id, callid_bitmap);
++ rcu_assign_pointer(callid_sock[sa->call_id], sock);
+ spin_unlock(&chan_lock);
+
+ return 0;
+@@ -417,7 +420,6 @@ static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr,
+ struct sock *sk = sock->sk;
+ struct sockaddr_pppox *sp = (struct sockaddr_pppox *) uservaddr;
+ struct pppox_sock *po = pppox_sk(sk);
+- struct pptp_opt *opt = &po->proto.pptp;
+ int error = 0;
+
+ if (sockaddr_len < sizeof(struct sockaddr_pppox))
+@@ -425,10 +427,22 @@ static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr,
+
+ lock_sock(sk);
+
+- opt->src_addr = sp->sa_addr.pptp;
+- if (add_chan(po))
++ if (sk->sk_state & PPPOX_DEAD) {
++ error = -EALREADY;
++ goto out;
++ }
++
++ if (sk->sk_state & PPPOX_BOUND) {
+ error = -EBUSY;
++ goto out;
++ }
++
++ if (add_chan(po, &sp->sa_addr.pptp))
++ error = -EBUSY;
++ else
++ sk->sk_state |= PPPOX_BOUND;
+
++out:
+ release_sock(sk);
+ return error;
+ }
+@@ -499,7 +513,7 @@ static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr,
+ }
+
+ opt->dst_addr = sp->sa_addr.pptp;
+- sk->sk_state = PPPOX_CONNECTED;
++ sk->sk_state |= PPPOX_CONNECTED;
+
+ end:
+ release_sock(sk);
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index 71190dc1eacf..cffb25280a3b 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -542,6 +542,7 @@ static const struct usb_device_id products[] = {
+
+ /* 3. Combined interface devices matching on interface number */
+ {QMI_FIXED_INTF(0x0408, 0xea42, 4)}, /* Yota / Megafon M100-1 */
++ {QMI_FIXED_INTF(0x05c6, 0x6001, 3)}, /* 4G LTE usb-modem U901 */
+ {QMI_FIXED_INTF(0x05c6, 0x7000, 0)},
+ {QMI_FIXED_INTF(0x05c6, 0x7001, 1)},
+ {QMI_FIXED_INTF(0x05c6, 0x7002, 1)},
+diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
+index 0bf82a20a0fb..48d21e0edd56 100644
+--- a/drivers/pci/pcie/aer/aerdrv.c
++++ b/drivers/pci/pcie/aer/aerdrv.c
+@@ -262,7 +262,6 @@ static struct aer_rpc *aer_alloc_rpc(struct pcie_device *dev)
+ rpc->rpd = dev;
+ INIT_WORK(&rpc->dpc_handler, aer_isr);
+ mutex_init(&rpc->rpc_mutex);
+- init_waitqueue_head(&rpc->wait_release);
+
+ /* Use PCIe bus function to store rpc into PCIe device */
+ set_service_data(dev, rpc);
+@@ -285,8 +284,7 @@ static void aer_remove(struct pcie_device *dev)
+ if (rpc->isr)
+ free_irq(dev->irq, dev);
+
+- wait_event(rpc->wait_release, rpc->prod_idx == rpc->cons_idx);
+-
++ flush_work(&rpc->dpc_handler);
+ aer_disable_rootport(rpc);
+ kfree(rpc);
+ set_service_data(dev, NULL);
+diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
+index 84420b7c9456..945c939a86c5 100644
+--- a/drivers/pci/pcie/aer/aerdrv.h
++++ b/drivers/pci/pcie/aer/aerdrv.h
+@@ -72,7 +72,6 @@ struct aer_rpc {
+ * recovery on the same
+ * root port hierarchy
+ */
+- wait_queue_head_t wait_release;
+ };
+
+ struct aer_broadcast_data {
+diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
+index 5653ea94547f..b60a325234c5 100644
+--- a/drivers/pci/pcie/aer/aerdrv_core.c
++++ b/drivers/pci/pcie/aer/aerdrv_core.c
+@@ -784,8 +784,6 @@ void aer_isr(struct work_struct *work)
+ while (get_e_source(rpc, &e_src))
+ aer_isr_one_error(p_device, &e_src);
+ mutex_unlock(&rpc->rpc_mutex);
+-
+- wake_up(&rpc->wait_release);
+ }
+
+ /**
+diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
+index 63bc12d7a73e..153e0a27c7ee 100644
+--- a/drivers/phy/phy-core.c
++++ b/drivers/phy/phy-core.c
+@@ -275,20 +275,21 @@ EXPORT_SYMBOL_GPL(phy_exit);
+
+ int phy_power_on(struct phy *phy)
+ {
+- int ret;
++ int ret = 0;
+
+ if (!phy)
+- return 0;
++ goto out;
+
+ if (phy->pwr) {
+ ret = regulator_enable(phy->pwr);
+ if (ret)
+- return ret;
++ goto out;
+ }
+
+ ret = phy_pm_runtime_get_sync(phy);
+ if (ret < 0 && ret != -ENOTSUPP)
+- return ret;
++ goto err_pm_sync;
++
+ ret = 0; /* Override possible ret == -ENOTSUPP */
+
+ mutex_lock(&phy->mutex);
+@@ -296,19 +297,20 @@ int phy_power_on(struct phy *phy)
+ ret = phy->ops->power_on(phy);
+ if (ret < 0) {
+ dev_err(&phy->dev, "phy poweron failed --> %d\n", ret);
+- goto out;
++ goto err_pwr_on;
+ }
+ }
+ ++phy->power_count;
+ mutex_unlock(&phy->mutex);
+ return 0;
+
+-out:
++err_pwr_on:
+ mutex_unlock(&phy->mutex);
+ phy_pm_runtime_put_sync(phy);
++err_pm_sync:
+ if (phy->pwr)
+ regulator_disable(phy->pwr);
+-
++out:
+ return ret;
+ }
+ EXPORT_SYMBOL_GPL(phy_power_on);
+diff --git a/drivers/phy/phy-twl4030-usb.c b/drivers/phy/phy-twl4030-usb.c
+index 6285f46f3ddb..fb9e30ed8018 100644
+--- a/drivers/phy/phy-twl4030-usb.c
++++ b/drivers/phy/phy-twl4030-usb.c
+@@ -719,6 +719,7 @@ static int twl4030_usb_probe(struct platform_device *pdev)
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_set_autosuspend_delay(&pdev->dev, 2000);
+ pm_runtime_enable(&pdev->dev);
++ pm_runtime_get_sync(&pdev->dev);
+
+ /* Our job is to use irqs and status from the power module
+ * to keep the transceiver disabled when nothing's connected.
+@@ -754,6 +755,7 @@ static int twl4030_usb_remove(struct platform_device *pdev)
+ struct twl4030_usb *twl = platform_get_drvdata(pdev);
+ int val;
+
++ usb_remove_phy(&twl->phy);
+ pm_runtime_get_sync(twl->dev);
+ cancel_delayed_work(&twl->id_workaround_work);
+ device_remove_file(twl->dev, &dev_attr_vbus);
+@@ -761,6 +763,13 @@ static int twl4030_usb_remove(struct platform_device *pdev)
+ /* set transceiver mode to power on defaults */
+ twl4030_usb_set_mode(twl, -1);
+
++ /* idle ulpi before powering off */
++ if (cable_present(twl->linkstat))
++ pm_runtime_put_noidle(twl->dev);
++ pm_runtime_mark_last_busy(twl->dev);
++ pm_runtime_put_sync_suspend(twl->dev);
++ pm_runtime_disable(twl->dev);
++
+ /* autogate 60MHz ULPI clock,
+ * clear dpll clock request for i2c access,
+ * disable 32KHz
+@@ -775,11 +784,6 @@ static int twl4030_usb_remove(struct platform_device *pdev)
+ /* disable complete OTG block */
+ twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
+
+- if (cable_present(twl->linkstat))
+- pm_runtime_put_noidle(twl->dev);
+- pm_runtime_mark_last_busy(twl->dev);
+- pm_runtime_put(twl->dev);
+-
+ return 0;
+ }
+
+diff --git a/drivers/platform/x86/intel_scu_ipcutil.c b/drivers/platform/x86/intel_scu_ipcutil.c
+index 02bc5a6343c3..aa454241489c 100644
+--- a/drivers/platform/x86/intel_scu_ipcutil.c
++++ b/drivers/platform/x86/intel_scu_ipcutil.c
+@@ -49,7 +49,7 @@ struct scu_ipc_data {
+
+ static int scu_reg_access(u32 cmd, struct scu_ipc_data *data)
+ {
+- int count = data->count;
++ unsigned int count = data->count;
+
+ if (count == 0 || count == 3 || count > 4)
+ return -EINVAL;
+diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
+index a2597e683e79..6a64e86e8ccd 100644
+--- a/drivers/s390/block/dasd_alias.c
++++ b/drivers/s390/block/dasd_alias.c
+@@ -264,8 +264,10 @@ void dasd_alias_disconnect_device_from_lcu(struct dasd_device *device)
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ cancel_work_sync(&lcu->suc_data.worker);
+ spin_lock_irqsave(&lcu->lock, flags);
+- if (device == lcu->suc_data.device)
++ if (device == lcu->suc_data.device) {
++ dasd_put_device(device);
+ lcu->suc_data.device = NULL;
++ }
+ }
+ was_pending = 0;
+ if (device == lcu->ruac_data.device) {
+@@ -273,8 +275,10 @@ void dasd_alias_disconnect_device_from_lcu(struct dasd_device *device)
+ was_pending = 1;
+ cancel_delayed_work_sync(&lcu->ruac_data.dwork);
+ spin_lock_irqsave(&lcu->lock, flags);
+- if (device == lcu->ruac_data.device)
++ if (device == lcu->ruac_data.device) {
++ dasd_put_device(device);
+ lcu->ruac_data.device = NULL;
++ }
+ }
+ private->lcu = NULL;
+ spin_unlock_irqrestore(&lcu->lock, flags);
+@@ -549,8 +553,10 @@ static void lcu_update_work(struct work_struct *work)
+ if ((rc && (rc != -EOPNOTSUPP)) || (lcu->flags & NEED_UAC_UPDATE)) {
+ DBF_DEV_EVENT(DBF_WARNING, device, "could not update"
+ " alias data in lcu (rc = %d), retry later", rc);
+- schedule_delayed_work(&lcu->ruac_data.dwork, 30*HZ);
++ if (!schedule_delayed_work(&lcu->ruac_data.dwork, 30*HZ))
++ dasd_put_device(device);
+ } else {
++ dasd_put_device(device);
+ lcu->ruac_data.device = NULL;
+ lcu->flags &= ~UPDATE_PENDING;
+ }
+@@ -593,8 +599,10 @@ static int _schedule_lcu_update(struct alias_lcu *lcu,
+ */
+ if (!usedev)
+ return -EINVAL;
++ dasd_get_device(usedev);
+ lcu->ruac_data.device = usedev;
+- schedule_delayed_work(&lcu->ruac_data.dwork, 0);
++ if (!schedule_delayed_work(&lcu->ruac_data.dwork, 0))
++ dasd_put_device(usedev);
+ return 0;
+ }
+
+@@ -722,7 +730,7 @@ static int reset_summary_unit_check(struct alias_lcu *lcu,
+ ASCEBC((char *) &cqr->magic, 4);
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_RSCK;
+- ccw->flags = 0 ;
++ ccw->flags = CCW_FLAG_SLI;
+ ccw->count = 16;
+ ccw->cda = (__u32)(addr_t) cqr->data;
+ ((char *)cqr->data)[0] = reason;
+@@ -926,6 +934,7 @@ static void summary_unit_check_handling_work(struct work_struct *work)
+ /* 3. read new alias configuration */
+ _schedule_lcu_update(lcu, device);
+ lcu->suc_data.device = NULL;
++ dasd_put_device(device);
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ }
+
+@@ -985,6 +994,8 @@ void dasd_alias_handle_summary_unit_check(struct dasd_device *device,
+ }
+ lcu->suc_data.reason = reason;
+ lcu->suc_data.device = device;
++ dasd_get_device(device);
+ spin_unlock(&lcu->lock);
+- schedule_work(&lcu->suc_data.worker);
++ if (!schedule_work(&lcu->suc_data.worker))
++ dasd_put_device(device);
+ };
+diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c
+index b46ace3d4bf0..dd0c133aa312 100644
+--- a/drivers/scsi/device_handler/scsi_dh_rdac.c
++++ b/drivers/scsi/device_handler/scsi_dh_rdac.c
+@@ -568,7 +568,7 @@ static int mode_select_handle_sense(struct scsi_device *sdev,
+ /*
+ * Command Lock contention
+ */
+- err = SCSI_DH_RETRY;
++ err = SCSI_DH_IMM_RETRY;
+ break;
+ default:
+ break;
+@@ -618,6 +618,8 @@ retry:
+ err = mode_select_handle_sense(sdev, h->sense);
+ if (err == SCSI_DH_RETRY && retry_cnt--)
+ goto retry;
++ if (err == SCSI_DH_IMM_RETRY)
++ goto retry;
+ }
+ if (err == SCSI_DH_OK) {
+ h->state = RDAC_STATE_ACTIVE;
+diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
+index e9ae6b924c70..8b011aef12bd 100644
+--- a/drivers/scsi/qla2xxx/qla_dbg.c
++++ b/drivers/scsi/qla2xxx/qla_dbg.c
+@@ -67,10 +67,10 @@
+ * | | | 0xd031-0xd0ff |
+ * | | | 0xd101-0xd1fe |
+ * | | | 0xd214-0xd2fe |
+- * | Target Mode | 0xe079 | |
+- * | Target Mode Management | 0xf080 | 0xf002 |
++ * | Target Mode | 0xe080 | |
++ * | Target Mode Management | 0xf096 | 0xf002 |
+ * | | | 0xf046-0xf049 |
+- * | Target Mode Task Management | 0x1000b | |
++ * | Target Mode Task Management | 0x1000d | |
+ * ----------------------------------------------------------------------
+ */
+
+diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
+index e86201d3b8c6..90d926ca1200 100644
+--- a/drivers/scsi/qla2xxx/qla_def.h
++++ b/drivers/scsi/qla2xxx/qla_def.h
+@@ -274,6 +274,7 @@
+ #define RESPONSE_ENTRY_CNT_FX00 256 /* Number of response entries.*/
+
+ struct req_que;
++struct qla_tgt_sess;
+
+ /*
+ * (sd.h is not exported, hence local inclusion)
+@@ -2026,6 +2027,7 @@ typedef struct fc_port {
+ uint16_t port_id;
+
+ unsigned long retry_delay_timestamp;
++ struct qla_tgt_sess *tgt_session;
+ } fc_port_t;
+
+ #include "qla_mr.h"
+@@ -3579,6 +3581,16 @@ typedef struct scsi_qla_host {
+ uint16_t fcoe_fcf_idx;
+ uint8_t fcoe_vn_port_mac[6];
+
++ /* list of commands waiting on workqueue */
++ struct list_head qla_cmd_list;
++ struct list_head qla_sess_op_cmd_list;
++ spinlock_t cmd_list_lock;
++
++ /* Counter to detect races between ELS and RSCN events */
++ atomic_t generation_tick;
++ /* Time when global fcport update has been scheduled */
++ int total_fcport_update_gen;
++
+ uint32_t vp_abort_cnt;
+
+ struct fc_vport *fc_vport; /* holds fc_vport * for each vport */
+diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
+index 998498e2341b..60f9651f2643 100644
+--- a/drivers/scsi/qla2xxx/qla_init.c
++++ b/drivers/scsi/qla2xxx/qla_init.c
+@@ -115,6 +115,8 @@ qla2x00_async_iocb_timeout(void *data)
+ QLA_LOGIO_LOGIN_RETRIED : 0;
+ qla2x00_post_async_login_done_work(fcport->vha, fcport,
+ lio->u.logio.data);
++ } else if (sp->type == SRB_LOGOUT_CMD) {
++ qlt_logo_completion_handler(fcport, QLA_FUNCTION_TIMEOUT);
+ }
+ }
+
+@@ -497,7 +499,10 @@ void
+ qla2x00_async_logout_done(struct scsi_qla_host *vha, fc_port_t *fcport,
+ uint16_t *data)
+ {
+- qla2x00_mark_device_lost(vha, fcport, 1, 0);
++ /* Don't re-login in target mode */
++ if (!fcport->tgt_session)
++ qla2x00_mark_device_lost(vha, fcport, 1, 0);
++ qlt_logo_completion_handler(fcport, data[0]);
+ return;
+ }
+
+@@ -2189,7 +2194,7 @@ qla2x00_init_rings(scsi_qla_host_t *vha)
+ /* Clear outstanding commands array. */
+ for (que = 0; que < ha->max_req_queues; que++) {
+ req = ha->req_q_map[que];
+- if (!req)
++ if (!req || !test_bit(que, ha->req_qid_map))
+ continue;
+ req->out_ptr = (void *)(req->ring + req->length);
+ *req->out_ptr = 0;
+@@ -2206,7 +2211,7 @@ qla2x00_init_rings(scsi_qla_host_t *vha)
+
+ for (que = 0; que < ha->max_rsp_queues; que++) {
+ rsp = ha->rsp_q_map[que];
+- if (!rsp)
++ if (!rsp || !test_bit(que, ha->rsp_qid_map))
+ continue;
+ rsp->in_ptr = (void *)(rsp->ring + rsp->length);
+ *rsp->in_ptr = 0;
+@@ -2922,24 +2927,14 @@ qla2x00_rport_del(void *data)
+ {
+ fc_port_t *fcport = data;
+ struct fc_rport *rport;
+- scsi_qla_host_t *vha = fcport->vha;
+ unsigned long flags;
+- unsigned long vha_flags;
+
+ spin_lock_irqsave(fcport->vha->host->host_lock, flags);
+ rport = fcport->drport ? fcport->drport: fcport->rport;
+ fcport->drport = NULL;
+ spin_unlock_irqrestore(fcport->vha->host->host_lock, flags);
+- if (rport) {
++ if (rport)
+ fc_remote_port_delete(rport);
+- /*
+- * Release the target mode FC NEXUS in qla_target.c code
+- * if target mod is enabled.
+- */
+- spin_lock_irqsave(&vha->hw->hardware_lock, vha_flags);
+- qlt_fc_port_deleted(vha, fcport);
+- spin_unlock_irqrestore(&vha->hw->hardware_lock, vha_flags);
+- }
+ }
+
+ /**
+@@ -3379,6 +3374,7 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
+ LIST_HEAD(new_fcports);
+ struct qla_hw_data *ha = vha->hw;
+ struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
++ int discovery_gen;
+
+ /* If FL port exists, then SNS is present */
+ if (IS_FWI2_CAPABLE(ha))
+@@ -3449,6 +3445,14 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
+ fcport->scan_state = QLA_FCPORT_SCAN;
+ }
+
++ /* Mark the time right before querying FW for connected ports.
++ * This process is long, asynchronous and by the time it's done,
++ * collected information might not be accurate anymore. E.g.
++ * disconnected port might have re-connected and a brand new
++ * session has been created. In this case session's generation
++ * will be newer than discovery_gen. */
++ qlt_do_generation_tick(vha, &discovery_gen);
++
+ rval = qla2x00_find_all_fabric_devs(vha, &new_fcports);
+ if (rval != QLA_SUCCESS)
+ break;
+@@ -3500,7 +3504,8 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
+ atomic_read(&fcport->state),
+ fcport->flags, fcport->fc4_type,
+ fcport->scan_state);
+- qlt_fc_port_deleted(vha, fcport);
++ qlt_fc_port_deleted(vha, fcport,
++ discovery_gen);
+ }
+ }
+ }
+@@ -4277,6 +4282,14 @@ qla2x00_update_fcports(scsi_qla_host_t *base_vha)
+ atomic_read(&fcport->state) != FCS_UNCONFIGURED) {
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+ qla2x00_rport_del(fcport);
++
++ /*
++ * Release the target mode FC NEXUS in
++ * qla_target.c, if target mod is enabled.
++ */
++ qlt_fc_port_deleted(vha, fcport,
++ base_vha->total_fcport_update_gen);
++
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ }
+ }
+@@ -4944,7 +4957,7 @@ qla25xx_init_queues(struct qla_hw_data *ha)
+
+ for (i = 1; i < ha->max_rsp_queues; i++) {
+ rsp = ha->rsp_q_map[i];
+- if (rsp) {
++ if (rsp && test_bit(i, ha->rsp_qid_map)) {
+ rsp->options &= ~BIT_0;
+ ret = qla25xx_init_rsp_que(base_vha, rsp);
+ if (ret != QLA_SUCCESS)
+@@ -4959,8 +4972,8 @@ qla25xx_init_queues(struct qla_hw_data *ha)
+ }
+ for (i = 1; i < ha->max_req_queues; i++) {
+ req = ha->req_q_map[i];
+- if (req) {
+- /* Clear outstanding commands array. */
++ if (req && test_bit(i, ha->req_qid_map)) {
++ /* Clear outstanding commands array. */
+ req->options &= ~BIT_0;
+ ret = qla25xx_init_req_que(base_vha, req);
+ if (ret != QLA_SUCCESS)
+diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
+index a1ab25fca874..dc96f31a8831 100644
+--- a/drivers/scsi/qla2xxx/qla_iocb.c
++++ b/drivers/scsi/qla2xxx/qla_iocb.c
+@@ -1943,6 +1943,9 @@ qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
+ logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
+ logio->control_flags =
+ cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
++ if (!sp->fcport->tgt_session ||
++ !sp->fcport->tgt_session->keep_nport_handle)
++ logio->control_flags |= cpu_to_le16(LCF_FREE_NPORT);
+ logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
+ logio->port_id[0] = sp->fcport->d_id.b.al_pa;
+ logio->port_id[1] = sp->fcport->d_id.b.area;
+diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
+index 6dc14cd782b2..1f3991ba7580 100644
+--- a/drivers/scsi/qla2xxx/qla_isr.c
++++ b/drivers/scsi/qla2xxx/qla_isr.c
+@@ -2992,9 +2992,9 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
+ "MSI-X: Failed to enable support "
+ "-- %d/%d\n Retry with %d vectors.\n",
+ ha->msix_count, ret, ret);
++ ha->msix_count = ret;
++ ha->max_rsp_queues = ha->msix_count - 1;
+ }
+- ha->msix_count = ret;
+- ha->max_rsp_queues = ha->msix_count - 1;
+ ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
+ ha->msix_count, GFP_KERNEL);
+ if (!ha->msix_entries) {
+diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
+index cc94192511cf..63abed122adf 100644
+--- a/drivers/scsi/qla2xxx/qla_mid.c
++++ b/drivers/scsi/qla2xxx/qla_mid.c
+@@ -601,7 +601,7 @@ qla25xx_delete_queues(struct scsi_qla_host *vha)
+ /* Delete request queues */
+ for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
+ req = ha->req_q_map[cnt];
+- if (req) {
++ if (req && test_bit(cnt, ha->req_qid_map)) {
+ ret = qla25xx_delete_req_que(vha, req);
+ if (ret != QLA_SUCCESS) {
+ ql_log(ql_log_warn, vha, 0x00ea,
+@@ -615,7 +615,7 @@ qla25xx_delete_queues(struct scsi_qla_host *vha)
+ /* Delete response queues */
+ for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
+ rsp = ha->rsp_q_map[cnt];
+- if (rsp) {
++ if (rsp && test_bit(cnt, ha->rsp_qid_map)) {
+ ret = qla25xx_delete_rsp_que(vha, rsp);
+ if (ret != QLA_SUCCESS) {
+ ql_log(ql_log_warn, vha, 0x00eb,
+diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
+index 7462dd70b150..d00725574577 100644
+--- a/drivers/scsi/qla2xxx/qla_os.c
++++ b/drivers/scsi/qla2xxx/qla_os.c
+@@ -398,6 +398,9 @@ static void qla2x00_free_queues(struct qla_hw_data *ha)
+ int cnt;
+
+ for (cnt = 0; cnt < ha->max_req_queues; cnt++) {
++ if (!test_bit(cnt, ha->req_qid_map))
++ continue;
++
+ req = ha->req_q_map[cnt];
+ qla2x00_free_req_que(ha, req);
+ }
+@@ -405,6 +408,9 @@ static void qla2x00_free_queues(struct qla_hw_data *ha)
+ ha->req_q_map = NULL;
+
+ for (cnt = 0; cnt < ha->max_rsp_queues; cnt++) {
++ if (!test_bit(cnt, ha->rsp_qid_map))
++ continue;
++
+ rsp = ha->rsp_q_map[cnt];
+ qla2x00_free_rsp_que(ha, rsp);
+ }
+@@ -3229,11 +3235,14 @@ qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
+ spin_lock_irqsave(vha->host->host_lock, flags);
+ fcport->drport = rport;
+ spin_unlock_irqrestore(vha->host->host_lock, flags);
++ qlt_do_generation_tick(vha, &base_vha->total_fcport_update_gen);
+ set_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags);
+ qla2xxx_wake_dpc(base_vha);
+ } else {
++ int now;
+ fc_remote_port_delete(rport);
+- qlt_fc_port_deleted(vha, fcport);
++ qlt_do_generation_tick(vha, &now);
++ qlt_fc_port_deleted(vha, fcport, now);
+ }
+ }
+
+@@ -3763,8 +3772,11 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
+ INIT_LIST_HEAD(&vha->vp_fcports);
+ INIT_LIST_HEAD(&vha->work_list);
+ INIT_LIST_HEAD(&vha->list);
++ INIT_LIST_HEAD(&vha->qla_cmd_list);
++ INIT_LIST_HEAD(&vha->qla_sess_op_cmd_list);
+
+ spin_lock_init(&vha->work_lock);
++ spin_lock_init(&vha->cmd_list_lock);
+
+ sprintf(vha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, vha->host_no);
+ ql_dbg(ql_dbg_init, vha, 0x0041,
+diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
+index 496a733d0ca3..df6193b48177 100644
+--- a/drivers/scsi/qla2xxx/qla_target.c
++++ b/drivers/scsi/qla2xxx/qla_target.c
+@@ -114,6 +114,10 @@ static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint16_t status, int qfull);
+ static void qlt_disable_vha(struct scsi_qla_host *vha);
+ static void qlt_clear_tgt_db(struct qla_tgt *tgt);
++static void qlt_send_notify_ack(struct scsi_qla_host *vha,
++ struct imm_ntfy_from_isp *ntfy,
++ uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
++ uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
+ /*
+ * Global Variables
+ */
+@@ -123,6 +127,16 @@ static struct workqueue_struct *qla_tgt_wq;
+ static DEFINE_MUTEX(qla_tgt_mutex);
+ static LIST_HEAD(qla_tgt_glist);
+
++/* This API intentionally takes dest as a parameter, rather than returning
++ * int value to avoid caller forgetting to issue wmb() after the store */
++void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
++{
++ scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
++ *dest = atomic_inc_return(&base_vha->generation_tick);
++ /* memory barrier */
++ wmb();
++}
++
+ /* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
+ static struct qla_tgt_sess *qlt_find_sess_by_port_name(
+ struct qla_tgt *tgt,
+@@ -382,14 +396,73 @@ static void qlt_free_session_done(struct work_struct *work)
+ struct qla_tgt *tgt = sess->tgt;
+ struct scsi_qla_host *vha = sess->vha;
+ struct qla_hw_data *ha = vha->hw;
++ unsigned long flags;
++ bool logout_started = false;
++ fc_port_t fcport;
++
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
++ "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
++ " s_id %02x:%02x:%02x logout %d keep %d plogi %d\n",
++ __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
++ sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
++ sess->logout_on_delete, sess->keep_nport_handle,
++ sess->plogi_ack_needed);
+
+ BUG_ON(!tgt);
++
++ if (sess->logout_on_delete) {
++ int rc;
++
++ memset(&fcport, 0, sizeof(fcport));
++ fcport.loop_id = sess->loop_id;
++ fcport.d_id = sess->s_id;
++ memcpy(fcport.port_name, sess->port_name, WWN_SIZE);
++ fcport.vha = vha;
++ fcport.tgt_session = sess;
++
++ rc = qla2x00_post_async_logout_work(vha, &fcport, NULL);
++ if (rc != QLA_SUCCESS)
++ ql_log(ql_log_warn, vha, 0xf085,
++ "Schedule logo failed sess %p rc %d\n",
++ sess, rc);
++ else
++ logout_started = true;
++ }
++
+ /*
+ * Release the target session for FC Nexus from fabric module code.
+ */
+ if (sess->se_sess != NULL)
+ ha->tgt.tgt_ops->free_session(sess);
+
++ if (logout_started) {
++ bool traced = false;
++
++ while (!ACCESS_ONCE(sess->logout_completed)) {
++ if (!traced) {
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
++ "%s: waiting for sess %p logout\n",
++ __func__, sess);
++ traced = true;
++ }
++ msleep(100);
++ }
++
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087,
++ "%s: sess %p logout completed\n",
++ __func__, sess);
++ }
++
++ spin_lock_irqsave(&ha->hardware_lock, flags);
++
++ if (sess->plogi_ack_needed)
++ qlt_send_notify_ack(vha, &sess->tm_iocb,
++ 0, 0, 0, 0, 0, 0);
++
++ list_del(&sess->sess_list_entry);
++
++ spin_unlock_irqrestore(&ha->hardware_lock, flags);
++
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
+ "Unregistration of sess %p finished\n", sess);
+
+@@ -410,9 +483,9 @@ void qlt_unreg_sess(struct qla_tgt_sess *sess)
+
+ vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
+
+- list_del(&sess->sess_list_entry);
+- if (sess->deleted)
+- list_del(&sess->del_list_entry);
++ if (!list_empty(&sess->del_list_entry))
++ list_del_init(&sess->del_list_entry);
++ sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
+
+ INIT_WORK(&sess->free_work, qlt_free_session_done);
+ schedule_work(&sess->free_work);
+@@ -490,27 +563,38 @@ static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
+ struct qla_tgt *tgt = sess->tgt;
+ uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
+
+- if (sess->deleted)
+- return;
++ if (sess->deleted) {
++ /* Upgrade to unconditional deletion in case it was temporary */
++ if (immediate && sess->deleted == QLA_SESS_DELETION_PENDING)
++ list_del(&sess->del_list_entry);
++ else
++ return;
++ }
+
+ ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
+ "Scheduling sess %p for deletion\n", sess);
+- list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
+- sess->deleted = 1;
+
+- if (immediate)
++ if (immediate) {
+ dev_loss_tmo = 0;
++ sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
++ list_add(&sess->del_list_entry, &tgt->del_sess_list);
++ } else {
++ sess->deleted = QLA_SESS_DELETION_PENDING;
++ list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
++ }
+
+ sess->expires = jiffies + dev_loss_tmo * HZ;
+
+ ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
+- "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
+- "deletion in %u secs (expires: %lu) immed: %d\n",
+- sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
+- sess->expires, immediate);
++ "qla_target(%d): session for port %8phC (loop ID %d s_id %02x:%02x:%02x)"
++ " scheduled for deletion in %u secs (expires: %lu) immed: %d, logout: %d, gen: %#x\n",
++ sess->vha->vp_idx, sess->port_name, sess->loop_id,
++ sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
++ dev_loss_tmo, sess->expires, immediate, sess->logout_on_delete,
++ sess->generation);
+
+ if (immediate)
+- schedule_delayed_work(&tgt->sess_del_work, 0);
++ mod_delayed_work(system_wq, &tgt->sess_del_work, 0);
+ else
+ schedule_delayed_work(&tgt->sess_del_work,
+ sess->expires - jiffies);
+@@ -579,9 +663,9 @@ out_free_id_list:
+ /* ha->hardware_lock supposed to be held on entry */
+ static void qlt_undelete_sess(struct qla_tgt_sess *sess)
+ {
+- BUG_ON(!sess->deleted);
++ BUG_ON(sess->deleted != QLA_SESS_DELETION_PENDING);
+
+- list_del(&sess->del_list_entry);
++ list_del_init(&sess->del_list_entry);
+ sess->deleted = 0;
+ }
+
+@@ -600,7 +684,9 @@ static void qlt_del_sess_work_fn(struct delayed_work *work)
+ del_list_entry);
+ elapsed = jiffies;
+ if (time_after_eq(elapsed, sess->expires)) {
+- qlt_undelete_sess(sess);
++ /* No turning back */
++ list_del_init(&sess->del_list_entry);
++ sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
+ "Timeout: sess %p about to be deleted\n",
+@@ -644,6 +730,13 @@ static struct qla_tgt_sess *qlt_create_sess(
+ fcport->d_id.b.al_pa, fcport->d_id.b.area,
+ fcport->loop_id);
+
++ /* Cannot undelete at this point */
++ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
++ spin_unlock_irqrestore(&ha->hardware_lock,
++ flags);
++ return NULL;
++ }
++
+ if (sess->deleted)
+ qlt_undelete_sess(sess);
+
+@@ -653,6 +746,9 @@ static struct qla_tgt_sess *qlt_create_sess(
+
+ if (sess->local && !local)
+ sess->local = 0;
++
++ qlt_do_generation_tick(vha, &sess->generation);
++
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return sess;
+@@ -674,6 +770,14 @@ static struct qla_tgt_sess *qlt_create_sess(
+ sess->s_id = fcport->d_id;
+ sess->loop_id = fcport->loop_id;
+ sess->local = local;
++ INIT_LIST_HEAD(&sess->del_list_entry);
++
++ /* Under normal circumstances we want to logout from firmware when
++ * session eventually ends and release corresponding nport handle.
++ * In the exception cases (e.g. when new PLOGI is waiting) corresponding
++ * code will adjust these flags as necessary. */
++ sess->logout_on_delete = 1;
++ sess->keep_nport_handle = 0;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
+ "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
+@@ -706,6 +810,7 @@ static struct qla_tgt_sess *qlt_create_sess(
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
+ vha->vha_tgt.qla_tgt->sess_count++;
++ qlt_do_generation_tick(vha, &sess->generation);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
+@@ -719,7 +824,7 @@ static struct qla_tgt_sess *qlt_create_sess(
+ }
+
+ /*
+- * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
++ * Called from qla2x00_reg_remote_port()
+ */
+ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
+ {
+@@ -751,6 +856,10 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
++ } else if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
++ /* Point of no return */
++ spin_unlock_irqrestore(&ha->hardware_lock, flags);
++ return;
+ } else {
+ kref_get(&sess->se_sess->sess_kref);
+
+@@ -781,7 +890,12 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ }
+
+-void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
++/*
++ * max_gen - specifies maximum session generation
++ * at which this deletion requestion is still valid
++ */
++void
++qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
+ {
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_tgt_sess *sess;
+@@ -800,6 +914,15 @@ void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
+ return;
+ }
+
++ if (max_gen - sess->generation < 0) {
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
++ "Ignoring stale deletion request for se_sess %p / sess %p"
++ " for port %8phC, req_gen %d, sess_gen %d\n",
++ sess->se_sess, sess, sess->port_name, max_gen,
++ sess->generation);
++ return;
++ }
++
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
+
+ sess->local = 1;
+@@ -1170,6 +1293,70 @@ static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
+ FCP_TMF_CMPL, true);
+ }
+
++static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
++{
++ struct qla_tgt_sess_op *op;
++ struct qla_tgt_cmd *cmd;
++
++ spin_lock(&vha->cmd_list_lock);
++
++ list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
++ if (tag == op->atio.u.isp24.exchange_addr) {
++ op->aborted = true;
++ spin_unlock(&vha->cmd_list_lock);
++ return 1;
++ }
++ }
++
++ list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
++ if (tag == cmd->atio.u.isp24.exchange_addr) {
++ cmd->state = QLA_TGT_STATE_ABORTED;
++ spin_unlock(&vha->cmd_list_lock);
++ return 1;
++ }
++ }
++
++ spin_unlock(&vha->cmd_list_lock);
++ return 0;
++}
++
++/* drop cmds for the given lun
++ * XXX only looks for cmds on the port through which lun reset was recieved
++ * XXX does not go through the list of other port (which may have cmds
++ * for the same lun)
++ */
++static void abort_cmds_for_lun(struct scsi_qla_host *vha,
++ uint32_t lun, uint8_t *s_id)
++{
++ struct qla_tgt_sess_op *op;
++ struct qla_tgt_cmd *cmd;
++ uint32_t key;
++
++ key = sid_to_key(s_id);
++ spin_lock(&vha->cmd_list_lock);
++ list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
++ uint32_t op_key;
++ uint32_t op_lun;
++
++ op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
++ op_lun = scsilun_to_int(
++ (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
++ if (op_key == key && op_lun == lun)
++ op->aborted = true;
++ }
++ list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
++ uint32_t cmd_key;
++ uint32_t cmd_lun;
++
++ cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
++ cmd_lun = scsilun_to_int(
++ (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
++ if (cmd_key == key && cmd_lun == lun)
++ cmd->state = QLA_TGT_STATE_ABORTED;
++ }
++ spin_unlock(&vha->cmd_list_lock);
++}
++
+ /* ha->hardware_lock supposed to be held on entry */
+ static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
+ struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
+@@ -1194,8 +1381,19 @@ static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
+ }
+ spin_unlock(&se_sess->sess_cmd_lock);
+
+- if (!found_lun)
+- return -ENOENT;
++ /* cmd not in LIO lists, look in qla list */
++ if (!found_lun) {
++ if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
++ /* send TASK_ABORT response immediately */
++ qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
++ return 0;
++ } else {
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
++ "unable to find cmd in driver or LIO for tag 0x%x\n",
++ abts->exchange_addr_to_abort);
++ return -ENOENT;
++ }
++ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
+ "qla_target(%d): task abort (tag=%d)\n",
+@@ -1279,6 +1477,11 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
+ return;
+ }
+
++ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
++ qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
++ return;
++ }
++
+ rc = __qlt_24xx_handle_abts(vha, abts, sess);
+ if (rc != 0) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
+@@ -1721,21 +1924,6 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
+ struct qla_hw_data *ha = vha->hw;
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+
+- if (unlikely(cmd->aborted)) {
+- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
+- "qla_target(%d): terminating exchange "
+- "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
+- se_cmd, cmd->tag);
+-
+- cmd->state = QLA_TGT_STATE_ABORTED;
+- cmd->cmd_flags |= BIT_6;
+-
+- qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
+-
+- /* !! At this point cmd could be already freed !! */
+- return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
+- }
+-
+ prm->cmd = cmd;
+ prm->tgt = tgt;
+ prm->rq_result = scsi_status;
+@@ -2298,6 +2486,19 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
+ unsigned long flags = 0;
+ int res;
+
++ spin_lock_irqsave(&ha->hardware_lock, flags);
++ if (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
++ cmd->state = QLA_TGT_STATE_PROCESSED;
++ if (cmd->sess->logout_completed)
++ /* no need to terminate. FW already freed exchange. */
++ qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
++ else
++ qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
++ spin_unlock_irqrestore(&ha->hardware_lock, flags);
++ return 0;
++ }
++ spin_unlock_irqrestore(&ha->hardware_lock, flags);
++
+ memset(&prm, 0, sizeof(prm));
+ qlt_check_srr_debug(cmd, &xmit_type);
+
+@@ -2310,9 +2511,6 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
+ res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
+ &full_req_cnt);
+ if (unlikely(res != 0)) {
+- if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
+- return 0;
+-
+ return res;
+ }
+
+@@ -2459,7 +2657,8 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+- if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
++ if (qla2x00_reset_active(vha) || (cmd->reset_count != ha->chip_reset) ||
++ (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)) {
+ /*
+ * Either a chip reset is active or this request was from
+ * previous life, just abort the processing.
+@@ -2652,6 +2851,89 @@ out:
+
+ /* If hardware_lock held on entry, might drop it, then reaquire */
+ /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
++static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
++ struct imm_ntfy_from_isp *ntfy)
++{
++ struct nack_to_isp *nack;
++ struct qla_hw_data *ha = vha->hw;
++ request_t *pkt;
++ int ret = 0;
++
++ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
++ "Sending TERM ELS CTIO (ha=%p)\n", ha);
++
++ pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
++ if (pkt == NULL) {
++ ql_dbg(ql_dbg_tgt, vha, 0xe080,
++ "qla_target(%d): %s failed: unable to allocate "
++ "request packet\n", vha->vp_idx, __func__);
++ return -ENOMEM;
++ }
++
++ pkt->entry_type = NOTIFY_ACK_TYPE;
++ pkt->entry_count = 1;
++ pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
++
++ nack = (struct nack_to_isp *)pkt;
++ nack->ox_id = ntfy->ox_id;
++
++ nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
++ if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
++ nack->u.isp24.flags = ntfy->u.isp24.flags &
++ __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
++ }
++
++ /* terminate */
++ nack->u.isp24.flags |=
++ __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
++
++ nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
++ nack->u.isp24.status = ntfy->u.isp24.status;
++ nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
++ nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
++ nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
++ nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
++ nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
++ nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
++
++ qla2x00_start_iocbs(vha, vha->req);
++ return ret;
++}
++
++static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
++ struct imm_ntfy_from_isp *imm, int ha_locked)
++{
++ unsigned long flags = 0;
++ int rc;
++
++ if (qlt_issue_marker(vha, ha_locked) < 0)
++ return;
++
++ if (ha_locked) {
++ rc = __qlt_send_term_imm_notif(vha, imm);
++
++#if 0 /* Todo */
++ if (rc == -ENOMEM)
++ qlt_alloc_qfull_cmd(vha, imm, 0, 0);
++#endif
++ goto done;
++ }
++
++ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
++ rc = __qlt_send_term_imm_notif(vha, imm);
++
++#if 0 /* Todo */
++ if (rc == -ENOMEM)
++ qlt_alloc_qfull_cmd(vha, imm, 0, 0);
++#endif
++
++done:
++ if (!ha_locked)
++ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
++}
++
++/* If hardware_lock held on entry, might drop it, then reaquire */
++/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
+ static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
+ struct qla_tgt_cmd *cmd,
+ struct atio_from_isp *atio)
+@@ -2794,6 +3076,24 @@ static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
+
+ }
+
++void qlt_abort_cmd(struct qla_tgt_cmd *cmd)
++{
++ struct qla_tgt *tgt = cmd->tgt;
++ struct scsi_qla_host *vha = tgt->vha;
++ struct se_cmd *se_cmd = &cmd->se_cmd;
++
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
++ "qla_target(%d): terminating exchange for aborted cmd=%p "
++ "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
++ cmd->tag);
++
++ cmd->state = QLA_TGT_STATE_ABORTED;
++ cmd->cmd_flags |= BIT_6;
++
++ qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
++}
++EXPORT_SYMBOL(qlt_abort_cmd);
++
+ void qlt_free_cmd(struct qla_tgt_cmd *cmd)
+ {
+ struct qla_tgt_sess *sess = cmd->sess;
+@@ -3265,6 +3565,13 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd)
+ if (tgt->tgt_stop)
+ goto out_term;
+
++ if (cmd->state == QLA_TGT_STATE_ABORTED) {
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
++ "cmd with tag %u is aborted\n",
++ cmd->atio.u.isp24.exchange_addr);
++ goto out_term;
++ }
++
+ cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
+ cmd->tag = atio->u.isp24.exchange_addr;
+ cmd->unpacked_lun = scsilun_to_int(
+@@ -3318,6 +3625,12 @@ out_term:
+ static void qlt_do_work(struct work_struct *work)
+ {
+ struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
++ scsi_qla_host_t *vha = cmd->vha;
++ unsigned long flags;
++
++ spin_lock_irqsave(&vha->cmd_list_lock, flags);
++ list_del(&cmd->cmd_list);
++ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
+
+ __qlt_do_work(cmd);
+ }
+@@ -3369,14 +3682,25 @@ static void qlt_create_sess_from_atio(struct work_struct *work)
+ unsigned long flags;
+ uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
+
++ spin_lock_irqsave(&vha->cmd_list_lock, flags);
++ list_del(&op->cmd_list);
++ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
++
++ if (op->aborted) {
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
++ "sess_op with tag %u is aborted\n",
++ op->atio.u.isp24.exchange_addr);
++ goto out_term;
++ }
++
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
+- "qla_target(%d): Unable to find wwn login"
+- " (s_id %x:%x:%x), trying to create it manually\n",
+- vha->vp_idx, s_id[0], s_id[1], s_id[2]);
++ "qla_target(%d): Unable to find wwn login"
++ " (s_id %x:%x:%x), trying to create it manually\n",
++ vha->vp_idx, s_id[0], s_id[1], s_id[2]);
+
+ if (op->atio.u.raw.entry_count > 1) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
+- "Dropping multy entry atio %p\n", &op->atio);
++ "Dropping multy entry atio %p\n", &op->atio);
+ goto out_term;
+ }
+
+@@ -3441,10 +3765,25 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
+
+ memcpy(&op->atio, atio, sizeof(*atio));
+ op->vha = vha;
++
++ spin_lock(&vha->cmd_list_lock);
++ list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
++ spin_unlock(&vha->cmd_list_lock);
++
+ INIT_WORK(&op->work, qlt_create_sess_from_atio);
+ queue_work(qla_tgt_wq, &op->work);
+ return 0;
+ }
++
++ /* Another WWN used to have our s_id. Our PLOGI scheduled its
++ * session deletion, but it's still in sess_del_work wq */
++ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
++ ql_dbg(ql_dbg_io, vha, 0x3061,
++ "New command while old session %p is being deleted\n",
++ sess);
++ return -EFAULT;
++ }
++
+ /*
+ * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
+ */
+@@ -3460,6 +3799,11 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
+
+ cmd->cmd_in_wq = 1;
+ cmd->cmd_flags |= BIT_0;
++
++ spin_lock(&vha->cmd_list_lock);
++ list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
++ spin_unlock(&vha->cmd_list_lock);
++
+ INIT_WORK(&cmd->work, qlt_do_work);
+ queue_work(qla_tgt_wq, &cmd->work);
+ return 0;
+@@ -3473,6 +3817,7 @@ static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
+ struct scsi_qla_host *vha = sess->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_mgmt_cmd *mcmd;
++ struct atio_from_isp *a = (struct atio_from_isp *)iocb;
+ int res;
+ uint8_t tmr_func;
+
+@@ -3513,6 +3858,7 @@ static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
+ "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
+ tmr_func = TMR_LUN_RESET;
++ abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
+ break;
+
+ case QLA_TGT_CLEAR_TS:
+@@ -3601,6 +3947,9 @@ static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
+ sizeof(struct atio_from_isp));
+ }
+
++ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)
++ return -EFAULT;
++
+ return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
+ }
+
+@@ -3666,22 +4015,280 @@ static int qlt_abort_task(struct scsi_qla_host *vha,
+ return __qlt_abort_task(vha, iocb, sess);
+ }
+
++void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
++{
++ if (fcport->tgt_session) {
++ if (rc != MBS_COMMAND_COMPLETE) {
++ ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
++ "%s: se_sess %p / sess %p from"
++ " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
++ " LOGO failed: %#x\n",
++ __func__,
++ fcport->tgt_session->se_sess,
++ fcport->tgt_session,
++ fcport->port_name, fcport->loop_id,
++ fcport->d_id.b.domain, fcport->d_id.b.area,
++ fcport->d_id.b.al_pa, rc);
++ }
++
++ fcport->tgt_session->logout_completed = 1;
++ }
++}
++
++static void qlt_swap_imm_ntfy_iocb(struct imm_ntfy_from_isp *a,
++ struct imm_ntfy_from_isp *b)
++{
++ struct imm_ntfy_from_isp tmp;
++ memcpy(&tmp, a, sizeof(struct imm_ntfy_from_isp));
++ memcpy(a, b, sizeof(struct imm_ntfy_from_isp));
++ memcpy(b, &tmp, sizeof(struct imm_ntfy_from_isp));
++}
++
++/*
++* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
++*
++* Schedules sessions with matching port_id/loop_id but different wwn for
++* deletion. Returns existing session with matching wwn if present.
++* Null otherwise.
++*/
++static struct qla_tgt_sess *
++qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn,
++ port_id_t port_id, uint16_t loop_id)
++{
++ struct qla_tgt_sess *sess = NULL, *other_sess;
++ uint64_t other_wwn;
++
++ list_for_each_entry(other_sess, &tgt->sess_list, sess_list_entry) {
++
++ other_wwn = wwn_to_u64(other_sess->port_name);
++
++ if (wwn == other_wwn) {
++ WARN_ON(sess);
++ sess = other_sess;
++ continue;
++ }
++
++ /* find other sess with nport_id collision */
++ if (port_id.b24 == other_sess->s_id.b24) {
++ if (loop_id != other_sess->loop_id) {
++ ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000c,
++ "Invalidating sess %p loop_id %d wwn %llx.\n",
++ other_sess, other_sess->loop_id, other_wwn);
++
++ /*
++ * logout_on_delete is set by default, but another
++ * session that has the same s_id/loop_id combo
++ * might have cleared it when requested this session
++ * deletion, so don't touch it
++ */
++ qlt_schedule_sess_for_deletion(other_sess, true);
++ } else {
++ /*
++ * Another wwn used to have our s_id/loop_id
++ * combo - kill the session, but don't log out
++ */
++ sess->logout_on_delete = 0;
++ qlt_schedule_sess_for_deletion(other_sess,
++ true);
++ }
++ continue;
++ }
++
++ /* find other sess with nport handle collision */
++ if (loop_id == other_sess->loop_id) {
++ ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000d,
++ "Invalidating sess %p loop_id %d wwn %llx.\n",
++ other_sess, other_sess->loop_id, other_wwn);
++
++ /* Same loop_id but different s_id
++ * Ok to kill and logout */
++ qlt_schedule_sess_for_deletion(other_sess, true);
++ }
++ }
++
++ return sess;
++}
++
++/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
++static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
++{
++ struct qla_tgt_sess_op *op;
++ struct qla_tgt_cmd *cmd;
++ uint32_t key;
++ int count = 0;
++
++ key = (((u32)s_id->b.domain << 16) |
++ ((u32)s_id->b.area << 8) |
++ ((u32)s_id->b.al_pa));
++
++ spin_lock(&vha->cmd_list_lock);
++ list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
++ uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
++ if (op_key == key) {
++ op->aborted = true;
++ count++;
++ }
++ }
++ list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
++ uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
++ if (cmd_key == key) {
++ cmd->state = QLA_TGT_STATE_ABORTED;
++ count++;
++ }
++ }
++ spin_unlock(&vha->cmd_list_lock);
++
++ return count;
++}
++
+ /*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *iocb)
+ {
++ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
++ struct qla_hw_data *ha = vha->hw;
++ struct qla_tgt_sess *sess = NULL;
++ uint64_t wwn;
++ port_id_t port_id;
++ uint16_t loop_id;
++ uint16_t wd3_lo;
+ int res = 0;
+
++ wwn = wwn_to_u64(iocb->u.isp24.port_name);
++
++ port_id.b.domain = iocb->u.isp24.port_id[2];
++ port_id.b.area = iocb->u.isp24.port_id[1];
++ port_id.b.al_pa = iocb->u.isp24.port_id[0];
++ port_id.b.rsvd_1 = 0;
++
++ loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
++
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
+ "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
+ vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
+
++ /* res = 1 means ack at the end of thread
++ * res = 0 means ack async/later.
++ */
+ switch (iocb->u.isp24.status_subcode) {
+ case ELS_PLOGI:
+- case ELS_FLOGI:
++
++ /* Mark all stale commands in qla_tgt_wq for deletion */
++ abort_cmds_for_s_id(vha, &port_id);
++
++ if (wwn)
++ sess = qlt_find_sess_invalidate_other(tgt, wwn,
++ port_id, loop_id);
++
++ if (!sess || IS_SW_RESV_ADDR(sess->s_id)) {
++ res = 1;
++ break;
++ }
++
++ if (sess->plogi_ack_needed) {
++ /*
++ * Initiator sent another PLOGI before last PLOGI could
++ * finish. Swap plogi iocbs and terminate old one
++ * without acking, new one will get acked when session
++ * deletion completes.
++ */
++ ql_log(ql_log_warn, sess->vha, 0xf094,
++ "sess %p received double plogi.\n", sess);
++
++ qlt_swap_imm_ntfy_iocb(iocb, &sess->tm_iocb);
++
++ qlt_send_term_imm_notif(vha, iocb, 1);
++
++ res = 0;
++ break;
++ }
++
++ res = 0;
++
++ /*
++ * Save immediate Notif IOCB for Ack when sess is done
++ * and being deleted.
++ */
++ memcpy(&sess->tm_iocb, iocb, sizeof(sess->tm_iocb));
++ sess->plogi_ack_needed = 1;
++
++ /*
++ * Under normal circumstances we want to release nport handle
++ * during LOGO process to avoid nport handle leaks inside FW.
++ * The exception is when LOGO is done while another PLOGI with
++ * the same nport handle is waiting as might be the case here.
++ * Note: there is always a possibily of a race where session
++ * deletion has already started for other reasons (e.g. ACL
++ * removal) and now PLOGI arrives:
++ * 1. if PLOGI arrived in FW after nport handle has been freed,
++ * FW must have assigned this PLOGI a new/same handle and we
++ * can proceed ACK'ing it as usual when session deletion
++ * completes.
++ * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
++ * bit reached it, the handle has now been released. We'll
++ * get an error when we ACK this PLOGI. Nothing will be sent
++ * back to initiator. Initiator should eventually retry
++ * PLOGI and situation will correct itself.
++ */
++ sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
++ (sess->s_id.b24 == port_id.b24));
++ qlt_schedule_sess_for_deletion(sess, true);
++ break;
++
+ case ELS_PRLI:
++ wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
++
++ if (wwn)
++ sess = qlt_find_sess_invalidate_other(tgt, wwn, port_id,
++ loop_id);
++
++ if (sess != NULL) {
++ if (sess->deleted) {
++ /*
++ * Impatient initiator sent PRLI before last
++ * PLOGI could finish. Will force him to re-try,
++ * while last one finishes.
++ */
++ ql_log(ql_log_warn, sess->vha, 0xf095,
++ "sess %p PRLI received, before plogi ack.\n",
++ sess);
++ qlt_send_term_imm_notif(vha, iocb, 1);
++ res = 0;
++ break;
++ }
++
++ /*
++ * This shouldn't happen under normal circumstances,
++ * since we have deleted the old session during PLOGI
++ */
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
++ "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
++ sess->loop_id, sess, iocb->u.isp24.nport_handle);
++
++ sess->local = 0;
++ sess->loop_id = loop_id;
++ sess->s_id = port_id;
++
++ if (wd3_lo & BIT_7)
++ sess->conf_compl_supported = 1;
++
++ }
++ res = 1; /* send notify ack */
++
++ /* Make session global (not used in fabric mode) */
++ if (ha->current_topology != ISP_CFG_F) {
++ set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
++ set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
++ qla2xxx_wake_dpc(vha);
++ } else {
++ /* todo: else - create sess here. */
++ res = 1; /* send notify ack */
++ }
++
++ break;
++
+ case ELS_LOGO:
+ case ELS_PRLO:
+ res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
+@@ -3699,6 +4306,7 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
+ break;
+ }
+
++ case ELS_FLOGI: /* should never happen */
+ default:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
+ "qla_target(%d): Unsupported ELS command %x "
+@@ -5016,6 +5624,11 @@ static void qlt_abort_work(struct qla_tgt *tgt,
+ if (!sess)
+ goto out_term;
+ } else {
++ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
++ sess = NULL;
++ goto out_term;
++ }
++
+ kref_get(&sess->se_sess->sess_kref);
+ }
+
+@@ -5070,6 +5683,11 @@ static void qlt_tmr_work(struct qla_tgt *tgt,
+ if (!sess)
+ goto out_term;
+ } else {
++ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
++ sess = NULL;
++ goto out_term;
++ }
++
+ kref_get(&sess->se_sess->sess_kref);
+ }
+
+diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
+index 332086776dfe..d30c60a1d522 100644
+--- a/drivers/scsi/qla2xxx/qla_target.h
++++ b/drivers/scsi/qla2xxx/qla_target.h
+@@ -167,7 +167,24 @@ struct imm_ntfy_from_isp {
+ uint32_t srr_rel_offs;
+ uint16_t srr_ui;
+ uint16_t srr_ox_id;
+- uint8_t reserved_4[19];
++ union {
++ struct {
++ uint8_t node_name[8];
++ } plogi; /* PLOGI/ADISC/PDISC */
++ struct {
++ /* PRLI word 3 bit 0-15 */
++ uint16_t wd3_lo;
++ uint8_t resv0[6];
++ } prli;
++ struct {
++ uint8_t port_id[3];
++ uint8_t resv1;
++ uint16_t nport_handle;
++ uint16_t resv2;
++ } req_els;
++ } u;
++ uint8_t port_name[8];
++ uint8_t resv3[3];
+ uint8_t vp_index;
+ uint32_t reserved_5;
+ uint8_t port_id[3];
+@@ -234,6 +251,7 @@ struct nack_to_isp {
+ uint8_t reserved[2];
+ uint16_t ox_id;
+ } __packed;
++#define NOTIFY_ACK_FLAGS_TERMINATE BIT_3
+ #define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0
+ #define NOTIFY_ACK_SRR_FLAGS_REJECT 1
+
+@@ -790,13 +808,6 @@ int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
+ #define FC_TM_REJECT 4
+ #define FC_TM_FAILED 5
+
+-/*
+- * Error code of qlt_pre_xmit_response() meaning that cmd's exchange was
+- * terminated, so no more actions is needed and success should be returned
+- * to target.
+- */
+-#define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED 0x1717
+-
+ #if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
+ #define pci_dma_lo32(a) (a & 0xffffffff)
+ #define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff)
+@@ -874,6 +885,15 @@ struct qla_tgt_sess_op {
+ struct scsi_qla_host *vha;
+ struct atio_from_isp atio;
+ struct work_struct work;
++ struct list_head cmd_list;
++ bool aborted;
++};
++
++enum qla_sess_deletion {
++ QLA_SESS_DELETION_NONE = 0,
++ QLA_SESS_DELETION_PENDING = 1, /* hopefully we can get rid of
++ * this one */
++ QLA_SESS_DELETION_IN_PROGRESS = 2,
+ };
+
+ /*
+@@ -884,8 +904,15 @@ struct qla_tgt_sess {
+ port_id_t s_id;
+
+ unsigned int conf_compl_supported:1;
+- unsigned int deleted:1;
++ unsigned int deleted:2;
+ unsigned int local:1;
++ unsigned int logout_on_delete:1;
++ unsigned int plogi_ack_needed:1;
++ unsigned int keep_nport_handle:1;
++
++ unsigned char logout_completed;
++
++ int generation;
+
+ struct se_session *se_sess;
+ struct scsi_qla_host *vha;
+@@ -897,6 +924,10 @@ struct qla_tgt_sess {
+
+ uint8_t port_name[WWN_SIZE];
+ struct work_struct free_work;
++
++ union {
++ struct imm_ntfy_from_isp tm_iocb;
++ };
+ };
+
+ struct qla_tgt_cmd {
+@@ -912,7 +943,6 @@ struct qla_tgt_cmd {
+ unsigned int conf_compl_supported:1;
+ unsigned int sg_mapped:1;
+ unsigned int free_sg:1;
+- unsigned int aborted:1; /* Needed in case of SRR */
+ unsigned int write_data_transferred:1;
+ unsigned int ctx_dsd_alloced:1;
+ unsigned int q_full:1;
+@@ -1027,6 +1057,10 @@ struct qla_tgt_srr_ctio {
+ struct qla_tgt_cmd *cmd;
+ };
+
++/* Check for Switch reserved address */
++#define IS_SW_RESV_ADDR(_s_id) \
++ ((_s_id.b.domain == 0xff) && (_s_id.b.area == 0xfc))
++
+ #define QLA_TGT_XMIT_DATA 1
+ #define QLA_TGT_XMIT_STATUS 2
+ #define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)
+@@ -1044,7 +1078,7 @@ extern int qlt_lport_register(void *, u64, u64, u64,
+ extern void qlt_lport_deregister(struct scsi_qla_host *);
+ extern void qlt_unreg_sess(struct qla_tgt_sess *);
+ extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
+-extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *);
++extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *, int);
+ extern int __init qlt_init(void);
+ extern void qlt_exit(void);
+ extern void qlt_update_vp_map(struct scsi_qla_host *, int);
+@@ -1074,12 +1108,23 @@ static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha)
+ ha->host->active_mode |= MODE_INITIATOR;
+ }
+
++static inline uint32_t sid_to_key(const uint8_t *s_id)
++{
++ uint32_t key;
++
++ key = (((unsigned long)s_id[0] << 16) |
++ ((unsigned long)s_id[1] << 8) |
++ (unsigned long)s_id[2]);
++ return key;
++}
++
+ /*
+ * Exported symbols from qla_target.c LLD logic used by qla2xxx code..
+ */
+ extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
+ extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *);
+ extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
++extern void qlt_abort_cmd(struct qla_tgt_cmd *);
+ extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *);
+ extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *);
+ extern void qlt_free_cmd(struct qla_tgt_cmd *cmd);
+@@ -1110,5 +1155,7 @@ extern void qlt_stop_phase2(struct qla_tgt *);
+ extern irqreturn_t qla83xx_msix_atio_q(int, void *);
+ extern void qlt_83xx_iospace_config(struct qla_hw_data *);
+ extern int qlt_free_qfull_cmds(struct scsi_qla_host *);
++extern void qlt_logo_completion_handler(fc_port_t *, int);
++extern void qlt_do_generation_tick(struct scsi_qla_host *, int *);
+
+ #endif /* __QLA_TARGET_H */
+diff --git a/drivers/scsi/qla2xxx/qla_tmpl.c b/drivers/scsi/qla2xxx/qla_tmpl.c
+index 962cb89fe0ae..af806fdb0dbc 100644
+--- a/drivers/scsi/qla2xxx/qla_tmpl.c
++++ b/drivers/scsi/qla2xxx/qla_tmpl.c
+@@ -395,6 +395,10 @@ qla27xx_fwdt_entry_t263(struct scsi_qla_host *vha,
+ if (ent->t263.queue_type == T263_QUEUE_TYPE_REQ) {
+ for (i = 0; i < vha->hw->max_req_queues; i++) {
+ struct req_que *req = vha->hw->req_q_map[i];
++
++ if (!test_bit(i, vha->hw->req_qid_map))
++ continue;
++
+ if (req || !buf) {
+ length = req ?
+ req->length : REQUEST_ENTRY_CNT_24XX;
+@@ -408,6 +412,10 @@ qla27xx_fwdt_entry_t263(struct scsi_qla_host *vha,
+ } else if (ent->t263.queue_type == T263_QUEUE_TYPE_RSP) {
+ for (i = 0; i < vha->hw->max_rsp_queues; i++) {
+ struct rsp_que *rsp = vha->hw->rsp_q_map[i];
++
++ if (!test_bit(i, vha->hw->rsp_qid_map))
++ continue;
++
+ if (rsp || !buf) {
+ length = rsp ?
+ rsp->length : RESPONSE_ENTRY_CNT_MQ;
+@@ -634,6 +642,10 @@ qla27xx_fwdt_entry_t274(struct scsi_qla_host *vha,
+ if (ent->t274.queue_type == T274_QUEUE_TYPE_REQ_SHAD) {
+ for (i = 0; i < vha->hw->max_req_queues; i++) {
+ struct req_que *req = vha->hw->req_q_map[i];
++
++ if (!test_bit(i, vha->hw->req_qid_map))
++ continue;
++
+ if (req || !buf) {
+ qla27xx_insert16(i, buf, len);
+ qla27xx_insert16(1, buf, len);
+@@ -645,6 +657,10 @@ qla27xx_fwdt_entry_t274(struct scsi_qla_host *vha,
+ } else if (ent->t274.queue_type == T274_QUEUE_TYPE_RSP_SHAD) {
+ for (i = 0; i < vha->hw->max_rsp_queues; i++) {
+ struct rsp_que *rsp = vha->hw->rsp_q_map[i];
++
++ if (!test_bit(i, vha->hw->rsp_qid_map))
++ continue;
++
+ if (rsp || !buf) {
+ qla27xx_insert16(i, buf, len);
+ qla27xx_insert16(1, buf, len);
+diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+index 5c9e680aa375..fdad875ca777 100644
+--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
++++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+@@ -429,7 +429,7 @@ static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
+ cmd->cmd_flags |= BIT_14;
+ }
+
+- return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
++ return target_put_sess_cmd(se_cmd);
+ }
+
+ /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
+@@ -669,7 +669,6 @@ static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
+ cmd->cmd_flags |= BIT_4;
+ cmd->bufflen = se_cmd->data_length;
+ cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
+- cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
+
+ cmd->sg_cnt = se_cmd->t_data_nents;
+ cmd->sg = se_cmd->t_data_sg;
+@@ -699,7 +698,6 @@ static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
+ cmd->sg_cnt = 0;
+ cmd->offset = 0;
+ cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
+- cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
+ if (cmd->cmd_flags & BIT_5) {
+ pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
+ dump_stack();
+@@ -764,14 +762,7 @@ static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
+ {
+ struct qla_tgt_cmd *cmd = container_of(se_cmd,
+ struct qla_tgt_cmd, se_cmd);
+- struct scsi_qla_host *vha = cmd->vha;
+- struct qla_hw_data *ha = vha->hw;
+-
+- if (!cmd->sg_mapped)
+- return;
+-
+- pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
+- cmd->sg_mapped = 0;
++ qlt_abort_cmd(cmd);
+ }
+
+ static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
+@@ -1323,9 +1314,7 @@ static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
+ return NULL;
+ }
+
+- key = (((unsigned long)s_id[0] << 16) |
+- ((unsigned long)s_id[1] << 8) |
+- (unsigned long)s_id[2]);
++ key = sid_to_key(s_id);
+ pr_debug("find_sess_by_s_id: 0x%06x\n", key);
+
+ se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
+@@ -1360,9 +1349,7 @@ static void tcm_qla2xxx_set_sess_by_s_id(
+ void *slot;
+ int rc;
+
+- key = (((unsigned long)s_id[0] << 16) |
+- ((unsigned long)s_id[1] << 8) |
+- (unsigned long)s_id[2]);
++ key = sid_to_key(s_id);
+ pr_debug("set_sess_by_s_id: %06x\n", key);
+
+ slot = btree_lookup32(&lport->lport_fcport_map, key);
+@@ -1718,6 +1705,10 @@ static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
+ }
+
+ sess->conf_compl_supported = conf_compl_supported;
++
++ /* Reset logout parameters to default */
++ sess->logout_on_delete = 1;
++ sess->keep_nport_handle = 0;
+ }
+
+ /*
+diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
+index 64ed88a67e6e..ac418e73536d 100644
+--- a/drivers/scsi/scsi_devinfo.c
++++ b/drivers/scsi/scsi_devinfo.c
+@@ -205,6 +205,7 @@ static struct {
+ {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
+ {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
+ {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
++ {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
+ {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+ {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
+ {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 330bbe831066..2e58279fab60 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -712,7 +712,7 @@ static int iscsit_add_reject_from_cmd(
+ */
+ if (cmd->se_cmd.se_tfo != NULL) {
+ pr_debug("iscsi reject: calling target_put_sess_cmd >>>>>>\n");
+- target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
++ target_put_sess_cmd(&cmd->se_cmd);
+ }
+ return -1;
+ }
+@@ -998,7 +998,7 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ hdr->cmdsn, be32_to_cpu(hdr->data_length), payload_length,
+ conn->cid);
+
+- target_get_sess_cmd(conn->sess->se_sess, &cmd->se_cmd, true);
++ target_get_sess_cmd(&cmd->se_cmd, true);
+
+ cmd->sense_reason = transport_lookup_cmd_lun(&cmd->se_cmd,
+ scsilun_to_int(&hdr->lun));
+@@ -1064,7 +1064,7 @@ int iscsit_process_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ if (cmdsn_ret == CMDSN_ERROR_CANNOT_RECOVER)
+ return -1;
+ else if (cmdsn_ret == CMDSN_LOWER_THAN_EXP) {
+- target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
++ target_put_sess_cmd(&cmd->se_cmd);
+ return 0;
+ }
+ }
+@@ -1080,7 +1080,7 @@ int iscsit_process_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ if (!cmd->sense_reason)
+ return 0;
+
+- target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
++ target_put_sess_cmd(&cmd->se_cmd);
+ return 0;
+ }
+
+@@ -1111,7 +1111,6 @@ static int
+ iscsit_get_immediate_data(struct iscsi_cmd *cmd, struct iscsi_scsi_req *hdr,
+ bool dump_payload)
+ {
+- struct iscsi_conn *conn = cmd->conn;
+ int cmdsn_ret = 0, immed_ret = IMMEDIATE_DATA_NORMAL_OPERATION;
+ /*
+ * Special case for Unsupported SAM WRITE Opcodes and ImmediateData=Yes.
+@@ -1138,7 +1137,7 @@ after_immediate_data:
+
+ rc = iscsit_dump_data_payload(cmd->conn,
+ cmd->first_burst_len, 1);
+- target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
++ target_put_sess_cmd(&cmd->se_cmd);
+ return rc;
+ } else if (cmd->unsolicited_data)
+ iscsit_set_unsoliticed_dataout(cmd);
+@@ -1807,7 +1806,7 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ conn->sess->se_sess, 0, DMA_NONE,
+ TCM_SIMPLE_TAG, cmd->sense_buffer + 2);
+
+- target_get_sess_cmd(conn->sess->se_sess, &cmd->se_cmd, true);
++ target_get_sess_cmd(&cmd->se_cmd, true);
+ sess_ref = true;
+
+ switch (function) {
+@@ -1949,7 +1948,7 @@ attach:
+ */
+ if (sess_ref) {
+ pr_debug("Handle TMR, using sess_ref=true check\n");
+- target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
++ target_put_sess_cmd(&cmd->se_cmd);
+ }
+
+ iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);
+diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
+index 5a8add721741..83bb55b94434 100644
+--- a/drivers/target/iscsi/iscsi_target_configfs.c
++++ b/drivers/target/iscsi/iscsi_target_configfs.c
+@@ -1981,7 +1981,7 @@ static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
+
+ static int lio_check_stop_free(struct se_cmd *se_cmd)
+ {
+- return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
++ return target_put_sess_cmd(se_cmd);
+ }
+
+ static void lio_release_cmd(struct se_cmd *se_cmd)
+diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
+index b18edda3e8af..231e2e0e5894 100644
+--- a/drivers/target/iscsi/iscsi_target_util.c
++++ b/drivers/target/iscsi/iscsi_target_util.c
+@@ -746,7 +746,7 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown)
+ rc = transport_generic_free_cmd(&cmd->se_cmd, shutdown);
+ if (!rc && shutdown && se_cmd && se_cmd->se_sess) {
+ __iscsit_free_cmd(cmd, true, shutdown);
+- target_put_sess_cmd(se_cmd->se_sess, se_cmd);
++ target_put_sess_cmd(se_cmd);
+ }
+ break;
+ case ISCSI_OP_REJECT:
+@@ -762,7 +762,7 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown)
+ rc = transport_generic_free_cmd(&cmd->se_cmd, shutdown);
+ if (!rc && shutdown && se_cmd->se_sess) {
+ __iscsit_free_cmd(cmd, true, shutdown);
+- target_put_sess_cmd(se_cmd->se_sess, se_cmd);
++ target_put_sess_cmd(se_cmd);
+ }
+ break;
+ }
+diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
+index 315ec3458eeb..adb8016955c4 100644
+--- a/drivers/target/target_core_tmr.c
++++ b/drivers/target/target_core_tmr.c
+@@ -71,7 +71,7 @@ void core_tmr_release_req(struct se_tmr_req *tmr)
+
+ if (dev) {
+ spin_lock_irqsave(&dev->se_tmr_lock, flags);
+- list_del(&tmr->tmr_list);
++ list_del_init(&tmr->tmr_list);
+ spin_unlock_irqrestore(&dev->se_tmr_lock, flags);
+ }
+
+@@ -153,7 +153,7 @@ void core_tmr_abort_task(
+ cancel_work_sync(&se_cmd->work);
+ transport_wait_for_tasks(se_cmd);
+
+- target_put_sess_cmd(se_sess, se_cmd);
++ target_put_sess_cmd(se_cmd);
+ transport_cmd_finish_abort(se_cmd, true);
+
+ printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for"
+@@ -175,9 +175,11 @@ static void core_tmr_drain_tmr_list(
+ struct list_head *preempt_and_abort_list)
+ {
+ LIST_HEAD(drain_tmr_list);
++ struct se_session *sess;
+ struct se_tmr_req *tmr_p, *tmr_pp;
+ struct se_cmd *cmd;
+ unsigned long flags;
++ bool rc;
+ /*
+ * Release all pending and outgoing TMRs aside from the received
+ * LUN_RESET tmr..
+@@ -203,17 +205,31 @@ static void core_tmr_drain_tmr_list(
+ if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd))
+ continue;
+
++ sess = cmd->se_sess;
++ if (WARN_ON_ONCE(!sess))
++ continue;
++
++ spin_lock(&sess->sess_cmd_lock);
+ spin_lock(&cmd->t_state_lock);
+ if (!(cmd->transport_state & CMD_T_ACTIVE)) {
+ spin_unlock(&cmd->t_state_lock);
++ spin_unlock(&sess->sess_cmd_lock);
+ continue;
+ }
+ if (cmd->t_state == TRANSPORT_ISTATE_PROCESSING) {
+ spin_unlock(&cmd->t_state_lock);
++ spin_unlock(&sess->sess_cmd_lock);
+ continue;
+ }
++ cmd->transport_state |= CMD_T_ABORTED;
+ spin_unlock(&cmd->t_state_lock);
+
++ rc = kref_get_unless_zero(&cmd->cmd_kref);
++ spin_unlock(&sess->sess_cmd_lock);
++ if (!rc) {
++ printk("LUN_RESET TMR: non-zero kref_get_unless_zero\n");
++ continue;
++ }
+ list_move_tail(&tmr_p->tmr_list, &drain_tmr_list);
+ }
+ spin_unlock_irqrestore(&dev->se_tmr_lock, flags);
+@@ -227,7 +243,11 @@ static void core_tmr_drain_tmr_list(
+ (preempt_and_abort_list) ? "Preempt" : "", tmr_p,
+ tmr_p->function, tmr_p->response, cmd->t_state);
+
++ cancel_work_sync(&cmd->work);
++ transport_wait_for_tasks(cmd);
++
+ transport_cmd_finish_abort(cmd, 1);
++ target_put_sess_cmd(cmd);
+ }
+ }
+
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index 675f2d9d1f14..3881504b40d8 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -1419,7 +1419,7 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
+ * for fabrics using TARGET_SCF_ACK_KREF that expect a second
+ * kref_put() to happen during fabric packet acknowledgement.
+ */
+- ret = target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
++ ret = target_get_sess_cmd(se_cmd, flags & TARGET_SCF_ACK_KREF);
+ if (ret)
+ return ret;
+ /*
+@@ -1433,7 +1433,7 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
+ rc = transport_lookup_cmd_lun(se_cmd, unpacked_lun);
+ if (rc) {
+ transport_send_check_condition_and_sense(se_cmd, rc, 0);
+- target_put_sess_cmd(se_sess, se_cmd);
++ target_put_sess_cmd(se_cmd);
+ return 0;
+ }
+
+@@ -1584,7 +1584,7 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
+ se_cmd->se_tmr_req->ref_task_tag = tag;
+
+ /* See target_submit_cmd for commentary */
+- ret = target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
++ ret = target_get_sess_cmd(se_cmd, flags & TARGET_SCF_ACK_KREF);
+ if (ret) {
+ core_tmr_release_req(se_cmd->se_tmr_req);
+ return ret;
+@@ -2227,7 +2227,7 @@ static int transport_release_cmd(struct se_cmd *cmd)
+ * If this cmd has been setup with target_get_sess_cmd(), drop
+ * the kref and call ->release_cmd() in kref callback.
+ */
+- return target_put_sess_cmd(cmd->se_sess, cmd);
++ return target_put_sess_cmd(cmd);
+ }
+
+ /**
+@@ -2471,13 +2471,12 @@ int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
+ EXPORT_SYMBOL(transport_generic_free_cmd);
+
+ /* target_get_sess_cmd - Add command to active ->sess_cmd_list
+- * @se_sess: session to reference
+ * @se_cmd: command descriptor to add
+ * @ack_kref: Signal that fabric will perform an ack target_put_sess_cmd()
+ */
+-int target_get_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd,
+- bool ack_kref)
++int target_get_sess_cmd(struct se_cmd *se_cmd, bool ack_kref)
+ {
++ struct se_session *se_sess = se_cmd->se_sess;
+ unsigned long flags;
+ int ret = 0;
+
+@@ -2499,7 +2498,7 @@ out:
+ spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
+
+ if (ret && ack_kref)
+- target_put_sess_cmd(se_sess, se_cmd);
++ target_put_sess_cmd(se_cmd);
+
+ return ret;
+ }
+@@ -2528,11 +2527,12 @@ static void target_release_cmd_kref(struct kref *kref)
+ }
+
+ /* target_put_sess_cmd - Check for active I/O shutdown via kref_put
+- * @se_sess: session to reference
+ * @se_cmd: command descriptor to drop
+ */
+-int target_put_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd)
++int target_put_sess_cmd(struct se_cmd *se_cmd)
+ {
++ struct se_session *se_sess = se_cmd->se_sess;
++
+ if (!se_sess) {
+ se_cmd->se_tfo->release_cmd(se_cmd);
+ return 1;
+@@ -3025,8 +3025,17 @@ static void target_tmr_work(struct work_struct *work)
+ struct se_cmd *cmd = container_of(work, struct se_cmd, work);
+ struct se_device *dev = cmd->se_dev;
+ struct se_tmr_req *tmr = cmd->se_tmr_req;
++ unsigned long flags;
+ int ret;
+
++ spin_lock_irqsave(&cmd->t_state_lock, flags);
++ if (cmd->transport_state & CMD_T_ABORTED) {
++ tmr->response = TMR_FUNCTION_REJECTED;
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ goto check_stop;
++ }
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++
+ switch (tmr->function) {
+ case TMR_ABORT_TASK:
+ core_tmr_abort_task(dev, tmr, cmd->se_sess);
+@@ -3054,9 +3063,17 @@ static void target_tmr_work(struct work_struct *work)
+ break;
+ }
+
++ spin_lock_irqsave(&cmd->t_state_lock, flags);
++ if (cmd->transport_state & CMD_T_ABORTED) {
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++ goto check_stop;
++ }
+ cmd->t_state = TRANSPORT_ISTATE_PROCESSING;
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++
+ cmd->se_tfo->queue_tm_rsp(cmd);
+
++check_stop:
+ transport_cmd_check_stop_to_fabric(cmd);
+ }
+
+diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
+index 4d5e8409769c..254c183a5efe 100644
+--- a/drivers/tty/pty.c
++++ b/drivers/tty/pty.c
+@@ -672,7 +672,14 @@ static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty)
+ /* this is called once with whichever end is closed last */
+ static void pty_unix98_shutdown(struct tty_struct *tty)
+ {
+- devpts_kill_index(tty->driver_data, tty->index);
++ struct inode *ptmx_inode;
++
++ if (tty->driver->subtype == PTY_TYPE_MASTER)
++ ptmx_inode = tty->driver_data;
++ else
++ ptmx_inode = tty->link->driver_data;
++ devpts_kill_index(ptmx_inode, tty->index);
++ devpts_del_ref(ptmx_inode);
+ }
+
+ static const struct tty_operations ptm_unix98_ops = {
+@@ -764,6 +771,18 @@ static int ptmx_open(struct inode *inode, struct file *filp)
+ set_bit(TTY_PTY_LOCK, &tty->flags); /* LOCK THE SLAVE */
+ tty->driver_data = inode;
+
++ /*
++ * In the case where all references to ptmx inode are dropped and we
++ * still have /dev/tty opened pointing to the master/slave pair (ptmx
++ * is closed/released before /dev/tty), we must make sure that the inode
++ * is still valid when we call the final pty_unix98_shutdown, thus we
++ * hold an additional reference to the ptmx inode. For the same /dev/tty
++ * last close case, we also need to make sure the super_block isn't
++ * destroyed (devpts instance unmounted), before /dev/tty is closed and
++ * on its release devpts_kill_index is called.
++ */
++ devpts_add_ref(inode);
++
+ tty_add_file(tty, filp);
+
+ slave_inode = devpts_pty_new(inode,
+diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
+index 2fd163b75665..b82b2a0f82a3 100644
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -2002,6 +2002,7 @@ pci_wch_ch38x_setup(struct serial_private *priv,
+ #define PCIE_VENDOR_ID_WCH 0x1c00
+ #define PCIE_DEVICE_ID_WCH_CH382_2S1P 0x3250
+ #define PCIE_DEVICE_ID_WCH_CH384_4S 0x3470
++#define PCIE_DEVICE_ID_WCH_CH382_2S 0x3253
+
+ #define PCI_DEVICE_ID_EXAR_XR17V4358 0x4358
+ #define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358
+@@ -2729,6 +2730,14 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_wch_ch353_setup,
+ },
++ /* WCH CH382 2S card (16850 clone) */
++ {
++ .vendor = PCIE_VENDOR_ID_WCH,
++ .device = PCIE_DEVICE_ID_WCH_CH382_2S,
++ .subvendor = PCI_ANY_ID,
++ .subdevice = PCI_ANY_ID,
++ .setup = pci_wch_ch38x_setup,
++ },
+ /* WCH CH382 2S1P card (16850 clone) */
+ {
+ .vendor = PCIE_VENDOR_ID_WCH,
+@@ -3049,6 +3058,7 @@ enum pci_board_num_t {
+ pbn_fintek_4,
+ pbn_fintek_8,
+ pbn_fintek_12,
++ pbn_wch382_2,
+ pbn_wch384_4,
+ pbn_pericom_PI7C9X7951,
+ pbn_pericom_PI7C9X7952,
+@@ -3879,6 +3889,13 @@ static struct pciserial_board pci_boards[] = {
+ .base_baud = 115200,
+ .first_offset = 0x40,
+ },
++ [pbn_wch382_2] = {
++ .flags = FL_BASE0,
++ .num_ports = 2,
++ .base_baud = 115200,
++ .uart_offset = 8,
++ .first_offset = 0xC0,
++ },
+ [pbn_wch384_4] = {
+ .flags = FL_BASE0,
+ .num_ports = 4,
+@@ -5691,6 +5708,10 @@ static struct pci_device_id serial_pci_tbl[] = {
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_b0_bt_2_115200 },
+
++ { PCIE_VENDOR_ID_WCH, PCIE_DEVICE_ID_WCH_CH382_2S,
++ PCI_ANY_ID, PCI_ANY_ID,
++ 0, 0, pbn_wch382_2 },
++
+ { PCIE_VENDOR_ID_WCH, PCIE_DEVICE_ID_WCH_CH384_4S,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_wch384_4 },
+diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
+index 7f49172ccd86..0a88693cd8ca 100644
+--- a/drivers/tty/serial/omap-serial.c
++++ b/drivers/tty/serial/omap-serial.c
+@@ -1368,7 +1368,7 @@ static inline void serial_omap_add_console_port(struct uart_omap_port *up)
+
+ /* Enable or disable the rs485 support */
+ static int
+-serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
++serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485)
+ {
+ struct uart_omap_port *up = to_uart_omap_port(port);
+ unsigned int mode;
+@@ -1381,8 +1381,12 @@ serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
+ up->ier = 0;
+ serial_out(up, UART_IER, 0);
+
++ /* Clamp the delays to [0, 100ms] */
++ rs485->delay_rts_before_send = min(rs485->delay_rts_before_send, 100U);
++ rs485->delay_rts_after_send = min(rs485->delay_rts_after_send, 100U);
++
+ /* store new config */
+- port->rs485 = *rs485conf;
++ port->rs485 = *rs485;
+
+ /*
+ * Just as a precaution, only allow rs485
+diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
+index ea32b386797f..636435b41293 100644
+--- a/drivers/vhost/scsi.c
++++ b/drivers/vhost/scsi.c
+@@ -607,7 +607,7 @@ static void vhost_scsi_free_cmd(struct vhost_scsi_cmd *cmd)
+
+ static int vhost_scsi_check_stop_free(struct se_cmd *se_cmd)
+ {
+- return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
++ return target_put_sess_cmd(se_cmd);
+ }
+
+ static void
+diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
+index 723470850b94..30bc9fa763bd 100644
+--- a/fs/btrfs/backref.c
++++ b/fs/btrfs/backref.c
+@@ -1369,7 +1369,8 @@ char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path,
+ read_extent_buffer(eb, dest + bytes_left,
+ name_off, name_len);
+ if (eb != eb_in) {
+- btrfs_tree_read_unlock_blocking(eb);
++ if (!path->skip_locking)
++ btrfs_tree_read_unlock_blocking(eb);
+ free_extent_buffer(eb);
+ }
+ ret = btrfs_find_item(fs_root, path, parent, 0,
+@@ -1389,9 +1390,10 @@ char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path,
+ eb = path->nodes[0];
+ /* make sure we can use eb after releasing the path */
+ if (eb != eb_in) {
+- atomic_inc(&eb->refs);
+- btrfs_tree_read_lock(eb);
+- btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
++ if (!path->skip_locking)
++ btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
++ path->nodes[0] = NULL;
++ path->locks[0] = 0;
+ }
+ btrfs_release_path(path);
+ iref = btrfs_item_ptr(eb, slot, struct btrfs_inode_ref);
+diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
+index a2ae42720a6a..bc2d048a9eb9 100644
+--- a/fs/btrfs/delayed-inode.c
++++ b/fs/btrfs/delayed-inode.c
+@@ -1690,7 +1690,7 @@ int btrfs_should_delete_dir_index(struct list_head *del_list,
+ *
+ */
+ int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,
+- struct list_head *ins_list)
++ struct list_head *ins_list, bool *emitted)
+ {
+ struct btrfs_dir_item *di;
+ struct btrfs_delayed_item *curr, *next;
+@@ -1734,6 +1734,7 @@ int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,
+
+ if (over)
+ return 1;
++ *emitted = true;
+ }
+ return 0;
+ }
+diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h
+index f70119f25421..0167853c84ae 100644
+--- a/fs/btrfs/delayed-inode.h
++++ b/fs/btrfs/delayed-inode.h
+@@ -144,7 +144,7 @@ void btrfs_put_delayed_items(struct list_head *ins_list,
+ int btrfs_should_delete_dir_index(struct list_head *del_list,
+ u64 index);
+ int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,
+- struct list_head *ins_list);
++ struct list_head *ins_list, bool *emitted);
+
+ /* for init */
+ int __init btrfs_delayed_inode_init(void);
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index df4e0462976e..b114a0539d3d 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -5666,6 +5666,7 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx)
+ char *name_ptr;
+ int name_len;
+ int is_curr = 0; /* ctx->pos points to the current index? */
++ bool emitted;
+
+ /* FIXME, use a real flag for deciding about the key type */
+ if (root->fs_info->tree_root == root)
+@@ -5694,6 +5695,7 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx)
+ if (ret < 0)
+ goto err;
+
++ emitted = false;
+ while (1) {
+ leaf = path->nodes[0];
+ slot = path->slots[0];
+@@ -5773,6 +5775,7 @@ skip:
+
+ if (over)
+ goto nopos;
++ emitted = true;
+ di_len = btrfs_dir_name_len(leaf, di) +
+ btrfs_dir_data_len(leaf, di) + sizeof(*di);
+ di_cur += di_len;
+@@ -5785,11 +5788,20 @@ next:
+ if (key_type == BTRFS_DIR_INDEX_KEY) {
+ if (is_curr)
+ ctx->pos++;
+- ret = btrfs_readdir_delayed_dir_index(ctx, &ins_list);
++ ret = btrfs_readdir_delayed_dir_index(ctx, &ins_list, &emitted);
+ if (ret)
+ goto nopos;
+ }
+
++ /*
++ * If we haven't emitted any dir entry, we must not touch ctx->pos as
++ * it was was set to the termination value in previous call. We assume
++ * that "." and ".." were emitted if we reach this point and set the
++ * termination value as well for an empty directory.
++ */
++ if (ctx->pos > 2 && !emitted)
++ goto nopos;
++
+ /* Reached end of directory/root. Bump pos past the last item. */
+ ctx->pos++;
+
+diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
+index afa09fce8151..e682b36a210f 100644
+--- a/fs/cifs/cifsencrypt.c
++++ b/fs/cifs/cifsencrypt.c
+@@ -714,7 +714,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
+
+ ses->auth_key.response = kmalloc(baselen + tilen, GFP_KERNEL);
+ if (!ses->auth_key.response) {
+- rc = ENOMEM;
++ rc = -ENOMEM;
+ ses->auth_key.len = 0;
+ goto setup_ntlmv2_rsp_ret;
+ }
+diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
+index add566303c68..91360444adf5 100644
+--- a/fs/devpts/inode.c
++++ b/fs/devpts/inode.c
+@@ -569,6 +569,26 @@ void devpts_kill_index(struct inode *ptmx_inode, int idx)
+ mutex_unlock(&allocated_ptys_lock);
+ }
+
++/*
++ * pty code needs to hold extra references in case of last /dev/tty close
++ */
++
++void devpts_add_ref(struct inode *ptmx_inode)
++{
++ struct super_block *sb = pts_sb_from_inode(ptmx_inode);
++
++ atomic_inc(&sb->s_active);
++ ihold(ptmx_inode);
++}
++
++void devpts_del_ref(struct inode *ptmx_inode)
++{
++ struct super_block *sb = pts_sb_from_inode(ptmx_inode);
++
++ iput(ptmx_inode);
++ deactivate_super(sb);
++}
++
+ /**
+ * devpts_pty_new -- create a new inode in /dev/pts/
+ * @ptmx_inode: inode of the master
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index 966c614822cc..2b3a53a51582 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -3133,29 +3133,29 @@ static ssize_t ext4_ext_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
+ * case, we allocate an io_end structure to hook to the iocb.
+ */
+ iocb->private = NULL;
+- ext4_inode_aio_set(inode, NULL);
+- if (!is_sync_kiocb(iocb)) {
+- io_end = ext4_init_io_end(inode, GFP_NOFS);
+- if (!io_end) {
+- ret = -ENOMEM;
+- goto retake_lock;
+- }
+- /*
+- * Grab reference for DIO. Will be dropped in ext4_end_io_dio()
+- */
+- iocb->private = ext4_get_io_end(io_end);
+- /*
+- * we save the io structure for current async direct
+- * IO, so that later ext4_map_blocks() could flag the
+- * io structure whether there is a unwritten extents
+- * needs to be converted when IO is completed.
+- */
+- ext4_inode_aio_set(inode, io_end);
+- }
+-
+ if (overwrite) {
+ get_block_func = ext4_get_block_write_nolock;
+ } else {
++ ext4_inode_aio_set(inode, NULL);
++ if (!is_sync_kiocb(iocb)) {
++ io_end = ext4_init_io_end(inode, GFP_NOFS);
++ if (!io_end) {
++ ret = -ENOMEM;
++ goto retake_lock;
++ }
++ /*
++ * Grab reference for DIO. Will be dropped in
++ * ext4_end_io_dio()
++ */
++ iocb->private = ext4_get_io_end(io_end);
++ /*
++ * we save the io structure for current async direct
++ * IO, so that later ext4_map_blocks() could flag the
++ * io structure whether there is a unwritten extents
++ * needs to be converted when IO is completed.
++ */
++ ext4_inode_aio_set(inode, io_end);
++ }
+ get_block_func = ext4_get_block_write;
+ dio_flags = DIO_LOCKING;
+ }
+diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
+index 370420bfae8d..7da8ac1047f8 100644
+--- a/fs/ext4/move_extent.c
++++ b/fs/ext4/move_extent.c
+@@ -268,11 +268,12 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode,
+ ext4_lblk_t orig_blk_offset, donor_blk_offset;
+ unsigned long blocksize = orig_inode->i_sb->s_blocksize;
+ unsigned int tmp_data_size, data_size, replaced_size;
+- int err2, jblocks, retries = 0;
++ int i, err2, jblocks, retries = 0;
+ int replaced_count = 0;
+ int from = data_offset_in_page << orig_inode->i_blkbits;
+ int blocks_per_page = PAGE_CACHE_SIZE >> orig_inode->i_blkbits;
+ struct super_block *sb = orig_inode->i_sb;
++ struct buffer_head *bh = NULL;
+
+ /*
+ * It needs twice the amount of ordinary journal buffers because
+@@ -383,8 +384,16 @@ data_copy:
+ }
+ /* Perform all necessary steps similar write_begin()/write_end()
+ * but keeping in mind that i_size will not change */
+- *err = __block_write_begin(pagep[0], from, replaced_size,
+- ext4_get_block);
++ if (!page_has_buffers(pagep[0]))
++ create_empty_buffers(pagep[0], 1 << orig_inode->i_blkbits, 0);
++ bh = page_buffers(pagep[0]);
++ for (i = 0; i < data_offset_in_page; i++)
++ bh = bh->b_this_page;
++ for (i = 0; i < block_len_in_page; i++) {
++ *err = ext4_get_block(orig_inode, orig_blk_offset + i, bh, 0);
++ if (*err < 0)
++ break;
++ }
+ if (!*err)
+ *err = block_commit_write(pagep[0], from, from + replaced_size);
+
+diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
+index cf0c472047e3..0e783b9f7007 100644
+--- a/fs/ext4/resize.c
++++ b/fs/ext4/resize.c
+@@ -198,7 +198,7 @@ static struct ext4_new_flex_group_data *alloc_flex_gd(unsigned long flexbg_size)
+ if (flex_gd == NULL)
+ goto out3;
+
+- if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_flex_group_data))
++ if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_group_data))
+ goto out2;
+ flex_gd->count = flexbg_size;
+
+diff --git a/include/asm-generic/cputime_nsecs.h b/include/asm-generic/cputime_nsecs.h
+index 0419485891f2..0f1c6f315cdc 100644
+--- a/include/asm-generic/cputime_nsecs.h
++++ b/include/asm-generic/cputime_nsecs.h
+@@ -75,7 +75,7 @@ typedef u64 __nocast cputime64_t;
+ */
+ static inline cputime_t timespec_to_cputime(const struct timespec *val)
+ {
+- u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec;
++ u64 ret = (u64)val->tv_sec * NSEC_PER_SEC + val->tv_nsec;
+ return (__force cputime_t) ret;
+ }
+ static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
+@@ -91,7 +91,8 @@ static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
+ */
+ static inline cputime_t timeval_to_cputime(const struct timeval *val)
+ {
+- u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC;
++ u64 ret = (u64)val->tv_sec * NSEC_PER_SEC +
++ val->tv_usec * NSEC_PER_USEC;
+ return (__force cputime_t) ret;
+ }
+ static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
+diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
+new file mode 100644
+index 000000000000..8d9c7e7a6432
+--- /dev/null
++++ b/include/linux/cgroup-defs.h
+@@ -0,0 +1,470 @@
++/*
++ * linux/cgroup-defs.h - basic definitions for cgroup
++ *
++ * This file provides basic type and interface. Include this file directly
++ * only if necessary to avoid cyclic dependencies.
++ */
++#ifndef _LINUX_CGROUP_DEFS_H
++#define _LINUX_CGROUP_DEFS_H
++
++#include <linux/limits.h>
++#include <linux/list.h>
++#include <linux/idr.h>
++#include <linux/wait.h>
++#include <linux/mutex.h>
++#include <linux/rcupdate.h>
++#include <linux/percpu-refcount.h>
++#include <linux/workqueue.h>
++
++#ifdef CONFIG_CGROUPS
++
++struct cgroup;
++struct cgroup_root;
++struct cgroup_subsys;
++struct cgroup_taskset;
++struct kernfs_node;
++struct kernfs_ops;
++struct kernfs_open_file;
++
++#define MAX_CGROUP_TYPE_NAMELEN 32
++#define MAX_CGROUP_ROOT_NAMELEN 64
++#define MAX_CFTYPE_NAME 64
++
++/* define the enumeration of all cgroup subsystems */
++#define SUBSYS(_x) _x ## _cgrp_id,
++enum cgroup_subsys_id {
++#include <linux/cgroup_subsys.h>
++ CGROUP_SUBSYS_COUNT,
++};
++#undef SUBSYS
++
++/* bits in struct cgroup_subsys_state flags field */
++enum {
++ CSS_NO_REF = (1 << 0), /* no reference counting for this css */
++ CSS_ONLINE = (1 << 1), /* between ->css_online() and ->css_offline() */
++ CSS_RELEASED = (1 << 2), /* refcnt reached zero, released */
++};
++
++/* bits in struct cgroup flags field */
++enum {
++ /* Control Group requires release notifications to userspace */
++ CGRP_NOTIFY_ON_RELEASE,
++ /*
++ * Clone the parent's configuration when creating a new child
++ * cpuset cgroup. For historical reasons, this option can be
++ * specified at mount time and thus is implemented here.
++ */
++ CGRP_CPUSET_CLONE_CHILDREN,
++};
++
++/* cgroup_root->flags */
++enum {
++ CGRP_ROOT_SANE_BEHAVIOR = (1 << 0), /* __DEVEL__sane_behavior specified */
++ CGRP_ROOT_NOPREFIX = (1 << 1), /* mounted subsystems have no named prefix */
++ CGRP_ROOT_XATTR = (1 << 2), /* supports extended attributes */
++};
++
++/* cftype->flags */
++enum {
++ CFTYPE_ONLY_ON_ROOT = (1 << 0), /* only create on root cgrp */
++ CFTYPE_NOT_ON_ROOT = (1 << 1), /* don't create on root cgrp */
++ CFTYPE_NO_PREFIX = (1 << 3), /* (DON'T USE FOR NEW FILES) no subsys prefix */
++
++ /* internal flags, do not use outside cgroup core proper */
++ __CFTYPE_ONLY_ON_DFL = (1 << 16), /* only on default hierarchy */
++ __CFTYPE_NOT_ON_DFL = (1 << 17), /* not on default hierarchy */
++};
++
++/*
++ * Per-subsystem/per-cgroup state maintained by the system. This is the
++ * fundamental structural building block that controllers deal with.
++ *
++ * Fields marked with "PI:" are public and immutable and may be accessed
++ * directly without synchronization.
++ */
++struct cgroup_subsys_state {
++ /* PI: the cgroup that this css is attached to */
++ struct cgroup *cgroup;
++
++ /* PI: the cgroup subsystem that this css is attached to */
++ struct cgroup_subsys *ss;
++
++ /* reference count - access via css_[try]get() and css_put() */
++ struct percpu_ref refcnt;
++
++ /* PI: the parent css */
++ struct cgroup_subsys_state *parent;
++
++ /* siblings list anchored at the parent's ->children */
++ struct list_head sibling;
++ struct list_head children;
++
++ /*
++ * PI: Subsys-unique ID. 0 is unused and root is always 1. The
++ * matching css can be looked up using css_from_id().
++ */
++ int id;
++
++ unsigned int flags;
++
++ /*
++ * Monotonically increasing unique serial number which defines a
++ * uniform order among all csses. It's guaranteed that all
++ * ->children lists are in the ascending order of ->serial_nr and
++ * used to allow interrupting and resuming iterations.
++ */
++ u64 serial_nr;
++
++ /*
++ * Incremented by online self and children. Used to guarantee that
++ * parents are not offlined before their children.
++ */
++ atomic_t online_cnt;
++
++ /* percpu_ref killing and RCU release */
++ struct rcu_head rcu_head;
++ struct work_struct destroy_work;
++};
++
++/*
++ * A css_set is a structure holding pointers to a set of
++ * cgroup_subsys_state objects. This saves space in the task struct
++ * object and speeds up fork()/exit(), since a single inc/dec and a
++ * list_add()/del() can bump the reference count on the entire cgroup
++ * set for a task.
++ */
++struct css_set {
++ /* Reference count */
++ atomic_t refcount;
++
++ /*
++ * List running through all cgroup groups in the same hash
++ * slot. Protected by css_set_lock
++ */
++ struct hlist_node hlist;
++
++ /*
++ * Lists running through all tasks using this cgroup group.
++ * mg_tasks lists tasks which belong to this cset but are in the
++ * process of being migrated out or in. Protected by
++ * css_set_rwsem, but, during migration, once tasks are moved to
++ * mg_tasks, it can be read safely while holding cgroup_mutex.
++ */
++ struct list_head tasks;
++ struct list_head mg_tasks;
++
++ /*
++ * List of cgrp_cset_links pointing at cgroups referenced from this
++ * css_set. Protected by css_set_lock.
++ */
++ struct list_head cgrp_links;
++
++ /* the default cgroup associated with this css_set */
++ struct cgroup *dfl_cgrp;
++
++ /*
++ * Set of subsystem states, one for each subsystem. This array is
++ * immutable after creation apart from the init_css_set during
++ * subsystem registration (at boot time).
++ */
++ struct cgroup_subsys_state *subsys[CGROUP_SUBSYS_COUNT];
++
++ /*
++ * List of csets participating in the on-going migration either as
++ * source or destination. Protected by cgroup_mutex.
++ */
++ struct list_head mg_preload_node;
++ struct list_head mg_node;
++
++ /*
++ * If this cset is acting as the source of migration the following
++ * two fields are set. mg_src_cgrp is the source cgroup of the
++ * on-going migration and mg_dst_cset is the destination cset the
++ * target tasks on this cset should be migrated to. Protected by
++ * cgroup_mutex.
++ */
++ struct cgroup *mg_src_cgrp;
++ struct css_set *mg_dst_cset;
++
++ /*
++ * On the default hierarhcy, ->subsys[ssid] may point to a css
++ * attached to an ancestor instead of the cgroup this css_set is
++ * associated with. The following node is anchored at
++ * ->subsys[ssid]->cgroup->e_csets[ssid] and provides a way to
++ * iterate through all css's attached to a given cgroup.
++ */
++ struct list_head e_cset_node[CGROUP_SUBSYS_COUNT];
++
++ /* For RCU-protected deletion */
++ struct rcu_head rcu_head;
++};
++
++struct cgroup {
++ /* self css with NULL ->ss, points back to this cgroup */
++ struct cgroup_subsys_state self;
++
++ unsigned long flags; /* "unsigned long" so bitops work */
++
++ /*
++ * idr allocated in-hierarchy ID.
++ *
++ * ID 0 is not used, the ID of the root cgroup is always 1, and a
++ * new cgroup will be assigned with a smallest available ID.
++ *
++ * Allocating/Removing ID must be protected by cgroup_mutex.
++ */
++ int id;
++
++ /*
++ * If this cgroup contains any tasks, it contributes one to
++ * populated_cnt. All children with non-zero popuplated_cnt of
++ * their own contribute one. The count is zero iff there's no task
++ * in this cgroup or its subtree.
++ */
++ int populated_cnt;
++
++ struct kernfs_node *kn; /* cgroup kernfs entry */
++ struct kernfs_node *populated_kn; /* kn for "cgroup.subtree_populated" */
++
++ /*
++ * The bitmask of subsystems enabled on the child cgroups.
++ * ->subtree_control is the one configured through
++ * "cgroup.subtree_control" while ->child_subsys_mask is the
++ * effective one which may have more subsystems enabled.
++ * Controller knobs are made available iff it's enabled in
++ * ->subtree_control.
++ */
++ unsigned int subtree_control;
++ unsigned int child_subsys_mask;
++
++ /* Private pointers for each registered subsystem */
++ struct cgroup_subsys_state __rcu *subsys[CGROUP_SUBSYS_COUNT];
++
++ struct cgroup_root *root;
++
++ /*
++ * List of cgrp_cset_links pointing at css_sets with tasks in this
++ * cgroup. Protected by css_set_lock.
++ */
++ struct list_head cset_links;
++
++ /*
++ * On the default hierarchy, a css_set for a cgroup with some
++ * susbsys disabled will point to css's which are associated with
++ * the closest ancestor which has the subsys enabled. The
++ * following lists all css_sets which point to this cgroup's css
++ * for the given subsystem.
++ */
++ struct list_head e_csets[CGROUP_SUBSYS_COUNT];
++
++ /*
++ * list of pidlists, up to two for each namespace (one for procs, one
++ * for tasks); created on demand.
++ */
++ struct list_head pidlists;
++ struct mutex pidlist_mutex;
++
++ /* used to wait for offlining of csses */
++ wait_queue_head_t offline_waitq;
++
++ /* used to schedule release agent */
++ struct work_struct release_agent_work;
++};
++
++/*
++ * A cgroup_root represents the root of a cgroup hierarchy, and may be
++ * associated with a kernfs_root to form an active hierarchy. This is
++ * internal to cgroup core. Don't access directly from controllers.
++ */
++struct cgroup_root {
++ struct kernfs_root *kf_root;
++
++ /* The bitmask of subsystems attached to this hierarchy */
++ unsigned int subsys_mask;
++
++ /* Unique id for this hierarchy. */
++ int hierarchy_id;
++
++ /* The root cgroup. Root is destroyed on its release. */
++ struct cgroup cgrp;
++
++ /* Number of cgroups in the hierarchy, used only for /proc/cgroups */
++ atomic_t nr_cgrps;
++
++ /* A list running through the active hierarchies */
++ struct list_head root_list;
++
++ /* Hierarchy-specific flags */
++ unsigned int flags;
++
++ /* IDs for cgroups in this hierarchy */
++ struct idr cgroup_idr;
++
++ /* The path to use for release notifications. */
++ char release_agent_path[PATH_MAX];
++
++ /* The name for this hierarchy - may be empty */
++ char name[MAX_CGROUP_ROOT_NAMELEN];
++};
++
++/*
++ * struct cftype: handler definitions for cgroup control files
++ *
++ * When reading/writing to a file:
++ * - the cgroup to use is file->f_path.dentry->d_parent->d_fsdata
++ * - the 'cftype' of the file is file->f_path.dentry->d_fsdata
++ */
++struct cftype {
++ /*
++ * By convention, the name should begin with the name of the
++ * subsystem, followed by a period. Zero length string indicates
++ * end of cftype array.
++ */
++ char name[MAX_CFTYPE_NAME];
++ int private;
++ /*
++ * If not 0, file mode is set to this value, otherwise it will
++ * be figured out automatically
++ */
++ umode_t mode;
++
++ /*
++ * The maximum length of string, excluding trailing nul, that can
++ * be passed to write. If < PAGE_SIZE-1, PAGE_SIZE-1 is assumed.
++ */
++ size_t max_write_len;
++
++ /* CFTYPE_* flags */
++ unsigned int flags;
++
++ /*
++ * Fields used for internal bookkeeping. Initialized automatically
++ * during registration.
++ */
++ struct cgroup_subsys *ss; /* NULL for cgroup core files */
++ struct list_head node; /* anchored at ss->cfts */
++ struct kernfs_ops *kf_ops;
++
++ /*
++ * read_u64() is a shortcut for the common case of returning a
++ * single integer. Use it in place of read()
++ */
++ u64 (*read_u64)(struct cgroup_subsys_state *css, struct cftype *cft);
++ /*
++ * read_s64() is a signed version of read_u64()
++ */
++ s64 (*read_s64)(struct cgroup_subsys_state *css, struct cftype *cft);
++
++ /* generic seq_file read interface */
++ int (*seq_show)(struct seq_file *sf, void *v);
++
++ /* optional ops, implement all or none */
++ void *(*seq_start)(struct seq_file *sf, loff_t *ppos);
++ void *(*seq_next)(struct seq_file *sf, void *v, loff_t *ppos);
++ void (*seq_stop)(struct seq_file *sf, void *v);
++
++ /*
++ * write_u64() is a shortcut for the common case of accepting
++ * a single integer (as parsed by simple_strtoull) from
++ * userspace. Use in place of write(); return 0 or error.
++ */
++ int (*write_u64)(struct cgroup_subsys_state *css, struct cftype *cft,
++ u64 val);
++ /*
++ * write_s64() is a signed version of write_u64()
++ */
++ int (*write_s64)(struct cgroup_subsys_state *css, struct cftype *cft,
++ s64 val);
++
++ /*
++ * write() is the generic write callback which maps directly to
++ * kernfs write operation and overrides all other operations.
++ * Maximum write size is determined by ->max_write_len. Use
++ * of_css/cft() to access the associated css and cft.
++ */
++ ssize_t (*write)(struct kernfs_open_file *of,
++ char *buf, size_t nbytes, loff_t off);
++
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ struct lock_class_key lockdep_key;
++#endif
++};
++
++/*
++ * Control Group subsystem type.
++ * See Documentation/cgroups/cgroups.txt for details
++ */
++struct cgroup_subsys {
++ struct cgroup_subsys_state *(*css_alloc)(struct cgroup_subsys_state *parent_css);
++ int (*css_online)(struct cgroup_subsys_state *css);
++ void (*css_offline)(struct cgroup_subsys_state *css);
++ void (*css_released)(struct cgroup_subsys_state *css);
++ void (*css_free)(struct cgroup_subsys_state *css);
++ void (*css_reset)(struct cgroup_subsys_state *css);
++ void (*css_e_css_changed)(struct cgroup_subsys_state *css);
++
++ int (*can_attach)(struct cgroup_subsys_state *css,
++ struct cgroup_taskset *tset);
++ void (*cancel_attach)(struct cgroup_subsys_state *css,
++ struct cgroup_taskset *tset);
++ void (*attach)(struct cgroup_subsys_state *css,
++ struct cgroup_taskset *tset);
++ void (*fork)(struct task_struct *task);
++ void (*exit)(struct cgroup_subsys_state *css,
++ struct cgroup_subsys_state *old_css,
++ struct task_struct *task);
++ void (*bind)(struct cgroup_subsys_state *root_css);
++
++ int disabled;
++ int early_init;
++
++ /*
++ * If %false, this subsystem is properly hierarchical -
++ * configuration, resource accounting and restriction on a parent
++ * cgroup cover those of its children. If %true, hierarchy support
++ * is broken in some ways - some subsystems ignore hierarchy
++ * completely while others are only implemented half-way.
++ *
++ * It's now disallowed to create nested cgroups if the subsystem is
++ * broken and cgroup core will emit a warning message on such
++ * cases. Eventually, all subsystems will be made properly
++ * hierarchical and this will go away.
++ */
++ bool broken_hierarchy;
++ bool warned_broken_hierarchy;
++
++ /* the following two fields are initialized automtically during boot */
++ int id;
++ const char *name;
++
++ /* link to parent, protected by cgroup_lock() */
++ struct cgroup_root *root;
++
++ /* idr for css->id */
++ struct idr css_idr;
++
++ /*
++ * List of cftypes. Each entry is the first entry of an array
++ * terminated by zero length name.
++ */
++ struct list_head cfts;
++
++ /*
++ * Base cftypes which are automatically registered. The two can
++ * point to the same array.
++ */
++ struct cftype *dfl_cftypes; /* for the default hierarchy */
++ struct cftype *legacy_cftypes; /* for the legacy hierarchies */
++
++ /*
++ * A subsystem may depend on other subsystems. When such subsystem
++ * is enabled on a cgroup, the depended-upon subsystems are enabled
++ * together if available. Subsystems enabled due to dependency are
++ * not visible to userland until explicitly enabled. The following
++ * specifies the mask of subsystems that this one depends on.
++ */
++ unsigned int depends_on;
++};
++
++#endif /* CONFIG_CGROUPS */
++#endif /* _LINUX_CGROUP_DEFS_H */
+diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
+index b9cb94c3102a..96a2ecd5aa69 100644
+--- a/include/linux/cgroup.h
++++ b/include/linux/cgroup.h
+@@ -11,23 +11,16 @@
+ #include <linux/sched.h>
+ #include <linux/cpumask.h>
+ #include <linux/nodemask.h>
+-#include <linux/rcupdate.h>
+ #include <linux/rculist.h>
+ #include <linux/cgroupstats.h>
+ #include <linux/rwsem.h>
+-#include <linux/idr.h>
+-#include <linux/workqueue.h>
+ #include <linux/fs.h>
+-#include <linux/percpu-refcount.h>
+ #include <linux/seq_file.h>
+ #include <linux/kernfs.h>
+-#include <linux/wait.h>
+
+-#ifdef CONFIG_CGROUPS
++#include <linux/cgroup-defs.h>
+
+-struct cgroup_root;
+-struct cgroup_subsys;
+-struct cgroup;
++#ifdef CONFIG_CGROUPS
+
+ extern int cgroup_init_early(void);
+ extern int cgroup_init(void);
+@@ -40,66 +33,6 @@ extern int cgroupstats_build(struct cgroupstats *stats,
+ extern int proc_cgroup_show(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *tsk);
+
+-/* define the enumeration of all cgroup subsystems */
+-#define SUBSYS(_x) _x ## _cgrp_id,
+-enum cgroup_subsys_id {
+-#include <linux/cgroup_subsys.h>
+- CGROUP_SUBSYS_COUNT,
+-};
+-#undef SUBSYS
+-
+-/*
+- * Per-subsystem/per-cgroup state maintained by the system. This is the
+- * fundamental structural building block that controllers deal with.
+- *
+- * Fields marked with "PI:" are public and immutable and may be accessed
+- * directly without synchronization.
+- */
+-struct cgroup_subsys_state {
+- /* PI: the cgroup that this css is attached to */
+- struct cgroup *cgroup;
+-
+- /* PI: the cgroup subsystem that this css is attached to */
+- struct cgroup_subsys *ss;
+-
+- /* reference count - access via css_[try]get() and css_put() */
+- struct percpu_ref refcnt;
+-
+- /* PI: the parent css */
+- struct cgroup_subsys_state *parent;
+-
+- /* siblings list anchored at the parent's ->children */
+- struct list_head sibling;
+- struct list_head children;
+-
+- /*
+- * PI: Subsys-unique ID. 0 is unused and root is always 1. The
+- * matching css can be looked up using css_from_id().
+- */
+- int id;
+-
+- unsigned int flags;
+-
+- /*
+- * Monotonically increasing unique serial number which defines a
+- * uniform order among all csses. It's guaranteed that all
+- * ->children lists are in the ascending order of ->serial_nr and
+- * used to allow interrupting and resuming iterations.
+- */
+- u64 serial_nr;
+-
+- /* percpu_ref killing and RCU release */
+- struct rcu_head rcu_head;
+- struct work_struct destroy_work;
+-};
+-
+-/* bits in struct cgroup_subsys_state flags field */
+-enum {
+- CSS_NO_REF = (1 << 0), /* no reference counting for this css */
+- CSS_ONLINE = (1 << 1), /* between ->css_online() and ->css_offline() */
+- CSS_RELEASED = (1 << 2), /* refcnt reached zero, released */
+-};
+-
+ /**
+ * css_get - obtain a reference on the specified css
+ * @css: target css
+@@ -185,307 +118,6 @@ static inline void css_put_many(struct cgroup_subsys_state *css, unsigned int n)
+ percpu_ref_put_many(&css->refcnt, n);
+ }
+
+-/* bits in struct cgroup flags field */
+-enum {
+- /* Control Group requires release notifications to userspace */
+- CGRP_NOTIFY_ON_RELEASE,
+- /*
+- * Clone the parent's configuration when creating a new child
+- * cpuset cgroup. For historical reasons, this option can be
+- * specified at mount time and thus is implemented here.
+- */
+- CGRP_CPUSET_CLONE_CHILDREN,
+-};
+-
+-struct cgroup {
+- /* self css with NULL ->ss, points back to this cgroup */
+- struct cgroup_subsys_state self;
+-
+- unsigned long flags; /* "unsigned long" so bitops work */
+-
+- /*
+- * idr allocated in-hierarchy ID.
+- *
+- * ID 0 is not used, the ID of the root cgroup is always 1, and a
+- * new cgroup will be assigned with a smallest available ID.
+- *
+- * Allocating/Removing ID must be protected by cgroup_mutex.
+- */
+- int id;
+-
+- /*
+- * If this cgroup contains any tasks, it contributes one to
+- * populated_cnt. All children with non-zero popuplated_cnt of
+- * their own contribute one. The count is zero iff there's no task
+- * in this cgroup or its subtree.
+- */
+- int populated_cnt;
+-
+- struct kernfs_node *kn; /* cgroup kernfs entry */
+- struct kernfs_node *populated_kn; /* kn for "cgroup.subtree_populated" */
+-
+- /*
+- * The bitmask of subsystems enabled on the child cgroups.
+- * ->subtree_control is the one configured through
+- * "cgroup.subtree_control" while ->child_subsys_mask is the
+- * effective one which may have more subsystems enabled.
+- * Controller knobs are made available iff it's enabled in
+- * ->subtree_control.
+- */
+- unsigned int subtree_control;
+- unsigned int child_subsys_mask;
+-
+- /* Private pointers for each registered subsystem */
+- struct cgroup_subsys_state __rcu *subsys[CGROUP_SUBSYS_COUNT];
+-
+- struct cgroup_root *root;
+-
+- /*
+- * List of cgrp_cset_links pointing at css_sets with tasks in this
+- * cgroup. Protected by css_set_lock.
+- */
+- struct list_head cset_links;
+-
+- /*
+- * On the default hierarchy, a css_set for a cgroup with some
+- * susbsys disabled will point to css's which are associated with
+- * the closest ancestor which has the subsys enabled. The
+- * following lists all css_sets which point to this cgroup's css
+- * for the given subsystem.
+- */
+- struct list_head e_csets[CGROUP_SUBSYS_COUNT];
+-
+- /*
+- * list of pidlists, up to two for each namespace (one for procs, one
+- * for tasks); created on demand.
+- */
+- struct list_head pidlists;
+- struct mutex pidlist_mutex;
+-
+- /* used to wait for offlining of csses */
+- wait_queue_head_t offline_waitq;
+-
+- /* used to schedule release agent */
+- struct work_struct release_agent_work;
+-};
+-
+-#define MAX_CGROUP_ROOT_NAMELEN 64
+-
+-/* cgroup_root->flags */
+-enum {
+- CGRP_ROOT_SANE_BEHAVIOR = (1 << 0), /* __DEVEL__sane_behavior specified */
+- CGRP_ROOT_NOPREFIX = (1 << 1), /* mounted subsystems have no named prefix */
+- CGRP_ROOT_XATTR = (1 << 2), /* supports extended attributes */
+-};
+-
+-/*
+- * A cgroup_root represents the root of a cgroup hierarchy, and may be
+- * associated with a kernfs_root to form an active hierarchy. This is
+- * internal to cgroup core. Don't access directly from controllers.
+- */
+-struct cgroup_root {
+- struct kernfs_root *kf_root;
+-
+- /* The bitmask of subsystems attached to this hierarchy */
+- unsigned int subsys_mask;
+-
+- /* Unique id for this hierarchy. */
+- int hierarchy_id;
+-
+- /* The root cgroup. Root is destroyed on its release. */
+- struct cgroup cgrp;
+-
+- /* Number of cgroups in the hierarchy, used only for /proc/cgroups */
+- atomic_t nr_cgrps;
+-
+- /* A list running through the active hierarchies */
+- struct list_head root_list;
+-
+- /* Hierarchy-specific flags */
+- unsigned int flags;
+-
+- /* IDs for cgroups in this hierarchy */
+- struct idr cgroup_idr;
+-
+- /* The path to use for release notifications. */
+- char release_agent_path[PATH_MAX];
+-
+- /* The name for this hierarchy - may be empty */
+- char name[MAX_CGROUP_ROOT_NAMELEN];
+-};
+-
+-/*
+- * A css_set is a structure holding pointers to a set of
+- * cgroup_subsys_state objects. This saves space in the task struct
+- * object and speeds up fork()/exit(), since a single inc/dec and a
+- * list_add()/del() can bump the reference count on the entire cgroup
+- * set for a task.
+- */
+-
+-struct css_set {
+-
+- /* Reference count */
+- atomic_t refcount;
+-
+- /*
+- * List running through all cgroup groups in the same hash
+- * slot. Protected by css_set_lock
+- */
+- struct hlist_node hlist;
+-
+- /*
+- * Lists running through all tasks using this cgroup group.
+- * mg_tasks lists tasks which belong to this cset but are in the
+- * process of being migrated out or in. Protected by
+- * css_set_rwsem, but, during migration, once tasks are moved to
+- * mg_tasks, it can be read safely while holding cgroup_mutex.
+- */
+- struct list_head tasks;
+- struct list_head mg_tasks;
+-
+- /*
+- * List of cgrp_cset_links pointing at cgroups referenced from this
+- * css_set. Protected by css_set_lock.
+- */
+- struct list_head cgrp_links;
+-
+- /* the default cgroup associated with this css_set */
+- struct cgroup *dfl_cgrp;
+-
+- /*
+- * Set of subsystem states, one for each subsystem. This array is
+- * immutable after creation apart from the init_css_set during
+- * subsystem registration (at boot time).
+- */
+- struct cgroup_subsys_state *subsys[CGROUP_SUBSYS_COUNT];
+-
+- /*
+- * List of csets participating in the on-going migration either as
+- * source or destination. Protected by cgroup_mutex.
+- */
+- struct list_head mg_preload_node;
+- struct list_head mg_node;
+-
+- /*
+- * If this cset is acting as the source of migration the following
+- * two fields are set. mg_src_cgrp is the source cgroup of the
+- * on-going migration and mg_dst_cset is the destination cset the
+- * target tasks on this cset should be migrated to. Protected by
+- * cgroup_mutex.
+- */
+- struct cgroup *mg_src_cgrp;
+- struct css_set *mg_dst_cset;
+-
+- /*
+- * On the default hierarhcy, ->subsys[ssid] may point to a css
+- * attached to an ancestor instead of the cgroup this css_set is
+- * associated with. The following node is anchored at
+- * ->subsys[ssid]->cgroup->e_csets[ssid] and provides a way to
+- * iterate through all css's attached to a given cgroup.
+- */
+- struct list_head e_cset_node[CGROUP_SUBSYS_COUNT];
+-
+- /* For RCU-protected deletion */
+- struct rcu_head rcu_head;
+-};
+-
+-/*
+- * struct cftype: handler definitions for cgroup control files
+- *
+- * When reading/writing to a file:
+- * - the cgroup to use is file->f_path.dentry->d_parent->d_fsdata
+- * - the 'cftype' of the file is file->f_path.dentry->d_fsdata
+- */
+-
+-/* cftype->flags */
+-enum {
+- CFTYPE_ONLY_ON_ROOT = (1 << 0), /* only create on root cgrp */
+- CFTYPE_NOT_ON_ROOT = (1 << 1), /* don't create on root cgrp */
+- CFTYPE_NO_PREFIX = (1 << 3), /* (DON'T USE FOR NEW FILES) no subsys prefix */
+-
+- /* internal flags, do not use outside cgroup core proper */
+- __CFTYPE_ONLY_ON_DFL = (1 << 16), /* only on default hierarchy */
+- __CFTYPE_NOT_ON_DFL = (1 << 17), /* not on default hierarchy */
+-};
+-
+-#define MAX_CFTYPE_NAME 64
+-
+-struct cftype {
+- /*
+- * By convention, the name should begin with the name of the
+- * subsystem, followed by a period. Zero length string indicates
+- * end of cftype array.
+- */
+- char name[MAX_CFTYPE_NAME];
+- int private;
+- /*
+- * If not 0, file mode is set to this value, otherwise it will
+- * be figured out automatically
+- */
+- umode_t mode;
+-
+- /*
+- * The maximum length of string, excluding trailing nul, that can
+- * be passed to write. If < PAGE_SIZE-1, PAGE_SIZE-1 is assumed.
+- */
+- size_t max_write_len;
+-
+- /* CFTYPE_* flags */
+- unsigned int flags;
+-
+- /*
+- * Fields used for internal bookkeeping. Initialized automatically
+- * during registration.
+- */
+- struct cgroup_subsys *ss; /* NULL for cgroup core files */
+- struct list_head node; /* anchored at ss->cfts */
+- struct kernfs_ops *kf_ops;
+-
+- /*
+- * read_u64() is a shortcut for the common case of returning a
+- * single integer. Use it in place of read()
+- */
+- u64 (*read_u64)(struct cgroup_subsys_state *css, struct cftype *cft);
+- /*
+- * read_s64() is a signed version of read_u64()
+- */
+- s64 (*read_s64)(struct cgroup_subsys_state *css, struct cftype *cft);
+-
+- /* generic seq_file read interface */
+- int (*seq_show)(struct seq_file *sf, void *v);
+-
+- /* optional ops, implement all or none */
+- void *(*seq_start)(struct seq_file *sf, loff_t *ppos);
+- void *(*seq_next)(struct seq_file *sf, void *v, loff_t *ppos);
+- void (*seq_stop)(struct seq_file *sf, void *v);
+-
+- /*
+- * write_u64() is a shortcut for the common case of accepting
+- * a single integer (as parsed by simple_strtoull) from
+- * userspace. Use in place of write(); return 0 or error.
+- */
+- int (*write_u64)(struct cgroup_subsys_state *css, struct cftype *cft,
+- u64 val);
+- /*
+- * write_s64() is a signed version of write_u64()
+- */
+- int (*write_s64)(struct cgroup_subsys_state *css, struct cftype *cft,
+- s64 val);
+-
+- /*
+- * write() is the generic write callback which maps directly to
+- * kernfs write operation and overrides all other operations.
+- * Maximum write size is determined by ->max_write_len. Use
+- * of_css/cft() to access the associated css and cft.
+- */
+- ssize_t (*write)(struct kernfs_open_file *of,
+- char *buf, size_t nbytes, loff_t off);
+-
+-#ifdef CONFIG_DEBUG_LOCK_ALLOC
+- struct lock_class_key lockdep_key;
+-#endif
+-};
+-
+ extern struct cgroup_root cgrp_dfl_root;
+ extern struct css_set init_css_set;
+
+@@ -612,11 +244,6 @@ int cgroup_rm_cftypes(struct cftype *cfts);
+
+ bool cgroup_is_descendant(struct cgroup *cgrp, struct cgroup *ancestor);
+
+-/*
+- * Control Group taskset, used to pass around set of tasks to cgroup_subsys
+- * methods.
+- */
+-struct cgroup_taskset;
+ struct task_struct *cgroup_taskset_first(struct cgroup_taskset *tset);
+ struct task_struct *cgroup_taskset_next(struct cgroup_taskset *tset);
+
+@@ -629,84 +256,6 @@ struct task_struct *cgroup_taskset_next(struct cgroup_taskset *tset);
+ for ((task) = cgroup_taskset_first((tset)); (task); \
+ (task) = cgroup_taskset_next((tset)))
+
+-/*
+- * Control Group subsystem type.
+- * See Documentation/cgroups/cgroups.txt for details
+- */
+-
+-struct cgroup_subsys {
+- struct cgroup_subsys_state *(*css_alloc)(struct cgroup_subsys_state *parent_css);
+- int (*css_online)(struct cgroup_subsys_state *css);
+- void (*css_offline)(struct cgroup_subsys_state *css);
+- void (*css_released)(struct cgroup_subsys_state *css);
+- void (*css_free)(struct cgroup_subsys_state *css);
+- void (*css_reset)(struct cgroup_subsys_state *css);
+- void (*css_e_css_changed)(struct cgroup_subsys_state *css);
+-
+- int (*can_attach)(struct cgroup_subsys_state *css,
+- struct cgroup_taskset *tset);
+- void (*cancel_attach)(struct cgroup_subsys_state *css,
+- struct cgroup_taskset *tset);
+- void (*attach)(struct cgroup_subsys_state *css,
+- struct cgroup_taskset *tset);
+- void (*fork)(struct task_struct *task);
+- void (*exit)(struct cgroup_subsys_state *css,
+- struct cgroup_subsys_state *old_css,
+- struct task_struct *task);
+- void (*bind)(struct cgroup_subsys_state *root_css);
+-
+- int disabled;
+- int early_init;
+-
+- /*
+- * If %false, this subsystem is properly hierarchical -
+- * configuration, resource accounting and restriction on a parent
+- * cgroup cover those of its children. If %true, hierarchy support
+- * is broken in some ways - some subsystems ignore hierarchy
+- * completely while others are only implemented half-way.
+- *
+- * It's now disallowed to create nested cgroups if the subsystem is
+- * broken and cgroup core will emit a warning message on such
+- * cases. Eventually, all subsystems will be made properly
+- * hierarchical and this will go away.
+- */
+- bool broken_hierarchy;
+- bool warned_broken_hierarchy;
+-
+- /* the following two fields are initialized automtically during boot */
+- int id;
+-#define MAX_CGROUP_TYPE_NAMELEN 32
+- const char *name;
+-
+- /* link to parent, protected by cgroup_lock() */
+- struct cgroup_root *root;
+-
+- /* idr for css->id */
+- struct idr css_idr;
+-
+- /*
+- * List of cftypes. Each entry is the first entry of an array
+- * terminated by zero length name.
+- */
+- struct list_head cfts;
+-
+- /*
+- * Base cftypes which are automatically registered. The two can
+- * point to the same array.
+- */
+- struct cftype *dfl_cftypes; /* for the default hierarchy */
+- struct cftype *legacy_cftypes; /* for the legacy hierarchies */
+-
+- /*
+- * A subsystem may depend on other subsystems. When such subsystem
+- * is enabled on a cgroup, the depended-upon subsystems are enabled
+- * together if available. Subsystems enabled due to dependency are
+- * not visible to userland until explicitly enabled. The following
+- * specifies the mask of subsystems that this one depends on.
+- */
+- unsigned int depends_on;
+-};
+-
+ #define SUBSYS(_x) extern struct cgroup_subsys _x ## _cgrp_subsys;
+ #include <linux/cgroup_subsys.h>
+ #undef SUBSYS
+diff --git a/include/linux/compiler.h b/include/linux/compiler.h
+index 867722591be2..99728072e536 100644
+--- a/include/linux/compiler.h
++++ b/include/linux/compiler.h
+@@ -142,7 +142,7 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
+ */
+ #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
+ #define __trace_if(cond) \
+- if (__builtin_constant_p((cond)) ? !!(cond) : \
++ if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
+ ({ \
+ int ______r; \
+ static struct ftrace_branch_data \
+diff --git a/include/linux/devpts_fs.h b/include/linux/devpts_fs.h
+index 251a2090a554..e0ee0b3000b2 100644
+--- a/include/linux/devpts_fs.h
++++ b/include/linux/devpts_fs.h
+@@ -19,6 +19,8 @@
+
+ int devpts_new_index(struct inode *ptmx_inode);
+ void devpts_kill_index(struct inode *ptmx_inode, int idx);
++void devpts_add_ref(struct inode *ptmx_inode);
++void devpts_del_ref(struct inode *ptmx_inode);
+ /* mknod in devpts */
+ struct inode *devpts_pty_new(struct inode *ptmx_inode, dev_t device, int index,
+ void *priv);
+@@ -32,6 +34,8 @@ void devpts_pty_kill(struct inode *inode);
+ /* Dummy stubs in the no-pty case */
+ static inline int devpts_new_index(struct inode *ptmx_inode) { return -EINVAL; }
+ static inline void devpts_kill_index(struct inode *ptmx_inode, int idx) { }
++static inline void devpts_add_ref(struct inode *ptmx_inode) { }
++static inline void devpts_del_ref(struct inode *ptmx_inode) { }
+ static inline struct inode *devpts_pty_new(struct inode *ptmx_inode,
+ dev_t device, int index, void *priv)
+ {
+diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
+index e4b464983322..01c25923675b 100644
+--- a/include/linux/ipv6.h
++++ b/include/linux/ipv6.h
+@@ -29,6 +29,7 @@ struct ipv6_devconf {
+ __s32 max_desync_factor;
+ __s32 max_addresses;
+ __s32 accept_ra_defrtr;
++ __s32 accept_ra_min_hop_limit;
+ __s32 accept_ra_pinfo;
+ #ifdef CONFIG_IPV6_ROUTER_PREF
+ __s32 accept_ra_rtr_pref;
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index 1f17abe23725..6633b0cd3fb9 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -203,6 +203,7 @@ struct sk_buff;
+ #else
+ #define MAX_SKB_FRAGS (65536/PAGE_SIZE + 1)
+ #endif
++extern int sysctl_max_skb_frags;
+
+ typedef struct skb_frag_struct skb_frag_t;
+
+diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
+index a5f7f3ecafa3..a6e1bca88cc6 100644
+--- a/include/linux/tracepoint.h
++++ b/include/linux/tracepoint.h
+@@ -14,8 +14,10 @@
+ * See the file COPYING for more details.
+ */
+
++#include <linux/smp.h>
+ #include <linux/errno.h>
+ #include <linux/types.h>
++#include <linux/cpumask.h>
+ #include <linux/rcupdate.h>
+ #include <linux/static_key.h>
+
+@@ -129,6 +131,9 @@ extern void syscall_unregfunc(void);
+ void *it_func; \
+ void *__data; \
+ \
++ if (!cpu_online(raw_smp_processor_id())) \
++ return; \
++ \
+ if (!(cond)) \
+ return; \
+ prercu; \
+diff --git a/include/net/af_unix.h b/include/net/af_unix.h
+index e830c3dff61a..7bb69c9c3c43 100644
+--- a/include/net/af_unix.h
++++ b/include/net/af_unix.h
+@@ -6,8 +6,8 @@
+ #include <linux/mutex.h>
+ #include <net/sock.h>
+
+-void unix_inflight(struct file *fp);
+-void unix_notinflight(struct file *fp);
++void unix_inflight(struct user_struct *user, struct file *fp);
++void unix_notinflight(struct user_struct *user, struct file *fp);
+ void unix_gc(void);
+ void wait_for_unix_gc(void);
+ struct sock *unix_get_socket(struct file *filp);
+diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
+index 5e192068e6cb..388dea4da083 100644
+--- a/include/net/ip6_route.h
++++ b/include/net/ip6_route.h
+@@ -64,8 +64,16 @@ static inline bool rt6_need_strict(const struct in6_addr *daddr)
+
+ void ip6_route_input(struct sk_buff *skb);
+
+-struct dst_entry *ip6_route_output(struct net *net, const struct sock *sk,
+- struct flowi6 *fl6);
++struct dst_entry *ip6_route_output_flags(struct net *net, const struct sock *sk,
++ struct flowi6 *fl6, int flags);
++
++static inline struct dst_entry *ip6_route_output(struct net *net,
++ const struct sock *sk,
++ struct flowi6 *fl6)
++{
++ return ip6_route_output_flags(net, sk, fl6, 0);
++}
++
+ struct dst_entry *ip6_route_lookup(struct net *net, struct flowi6 *fl6,
+ int flags);
+
+diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
+index 54271ed0ed45..13f1a97f6b2b 100644
+--- a/include/net/ip_fib.h
++++ b/include/net/ip_fib.h
+@@ -59,6 +59,7 @@ struct fib_nh_exception {
+ struct rtable __rcu *fnhe_rth_input;
+ struct rtable __rcu *fnhe_rth_output;
+ unsigned long fnhe_stamp;
++ struct rcu_head rcu;
+ };
+
+ struct fnhe_hash_bucket {
+diff --git a/include/net/scm.h b/include/net/scm.h
+index 262532d111f5..59fa93c01d2a 100644
+--- a/include/net/scm.h
++++ b/include/net/scm.h
+@@ -21,6 +21,7 @@ struct scm_creds {
+ struct scm_fp_list {
+ short count;
+ short max;
++ struct user_struct *user;
+ struct file *fp[SCM_MAX_FD];
+ };
+
+diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
+index 0f4dc3768587..24c8d9d0d946 100644
+--- a/include/target/target_core_fabric.h
++++ b/include/target/target_core_fabric.h
+@@ -155,8 +155,8 @@ bool transport_wait_for_tasks(struct se_cmd *);
+ int transport_check_aborted_status(struct se_cmd *, int);
+ int transport_send_check_condition_and_sense(struct se_cmd *,
+ sense_reason_t, int);
+-int target_get_sess_cmd(struct se_session *, struct se_cmd *, bool);
+-int target_put_sess_cmd(struct se_session *, struct se_cmd *);
++int target_get_sess_cmd(struct se_cmd *, bool);
++int target_put_sess_cmd(struct se_cmd *);
+ void target_sess_cmd_list_set_waiting(struct se_session *);
+ void target_wait_for_sess_cmds(struct se_session *);
+
+diff --git a/include/uapi/linux/ipv6.h b/include/uapi/linux/ipv6.h
+index 5efa54ae567c..80f3b74446a1 100644
+--- a/include/uapi/linux/ipv6.h
++++ b/include/uapi/linux/ipv6.h
+@@ -171,6 +171,8 @@ enum {
+ DEVCONF_USE_OPTIMISTIC,
+ DEVCONF_ACCEPT_RA_MTU,
+ DEVCONF_STABLE_SECRET,
++ DEVCONF_USE_OIF_ADDRS_ONLY,
++ DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT,
+ DEVCONF_MAX
+ };
+
+diff --git a/ipc/msgutil.c b/ipc/msgutil.c
+index 2b491590ebab..71f448e5e927 100644
+--- a/ipc/msgutil.c
++++ b/ipc/msgutil.c
+@@ -123,7 +123,7 @@ struct msg_msg *copy_msg(struct msg_msg *src, struct msg_msg *dst)
+ size_t len = src->m_ts;
+ size_t alen;
+
+- BUG_ON(dst == NULL);
++ WARN_ON(dst == NULL);
+ if (src->m_ts > dst->m_ts)
+ return ERR_PTR(-EINVAL);
+
+diff --git a/ipc/shm.c b/ipc/shm.c
+index 499a8bd22fad..bbe5f62f2b12 100644
+--- a/ipc/shm.c
++++ b/ipc/shm.c
+@@ -155,9 +155,13 @@ static inline struct shmid_kernel *shm_lock(struct ipc_namespace *ns, int id)
+ {
+ struct kern_ipc_perm *ipcp = ipc_lock(&shm_ids(ns), id);
+
++ /*
++ * Callers of shm_lock() must validate the status of the returned ipc
++ * object pointer (as returned by ipc_lock()), and error out as
++ * appropriate.
++ */
+ if (IS_ERR(ipcp))
+- return (struct shmid_kernel *)ipcp;
+-
++ return (void *)ipcp;
+ return container_of(ipcp, struct shmid_kernel, shm_perm);
+ }
+
+@@ -183,19 +187,33 @@ static inline void shm_rmid(struct ipc_namespace *ns, struct shmid_kernel *s)
+ }
+
+
+-/* This is called by fork, once for every shm attach. */
+-static void shm_open(struct vm_area_struct *vma)
++static int __shm_open(struct vm_area_struct *vma)
+ {
+ struct file *file = vma->vm_file;
+ struct shm_file_data *sfd = shm_file_data(file);
+ struct shmid_kernel *shp;
+
+ shp = shm_lock(sfd->ns, sfd->id);
+- BUG_ON(IS_ERR(shp));
++
++ if (IS_ERR(shp))
++ return PTR_ERR(shp);
++
+ shp->shm_atim = get_seconds();
+ shp->shm_lprid = task_tgid_vnr(current);
+ shp->shm_nattch++;
+ shm_unlock(shp);
++ return 0;
++}
++
++/* This is called by fork, once for every shm attach. */
++static void shm_open(struct vm_area_struct *vma)
++{
++ int err = __shm_open(vma);
++ /*
++ * We raced in the idr lookup or with shm_destroy().
++ * Either way, the ID is busted.
++ */
++ WARN_ON_ONCE(err);
+ }
+
+ /*
+@@ -258,7 +276,14 @@ static void shm_close(struct vm_area_struct *vma)
+ down_write(&shm_ids(ns).rwsem);
+ /* remove from the list of attaches of the shm segment */
+ shp = shm_lock(ns, sfd->id);
+- BUG_ON(IS_ERR(shp));
++
++ /*
++ * We raced in the idr lookup or with shm_destroy().
++ * Either way, the ID is busted.
++ */
++ if (WARN_ON_ONCE(IS_ERR(shp)))
++ goto done; /* no-op */
++
+ shp->shm_lprid = task_tgid_vnr(current);
+ shp->shm_dtim = get_seconds();
+ shp->shm_nattch--;
+@@ -266,6 +291,7 @@ static void shm_close(struct vm_area_struct *vma)
+ shm_destroy(ns, shp);
+ else
+ shm_unlock(shp);
++done:
+ up_write(&shm_ids(ns).rwsem);
+ }
+
+@@ -387,17 +413,25 @@ static int shm_mmap(struct file *file, struct vm_area_struct *vma)
+ struct shm_file_data *sfd = shm_file_data(file);
+ int ret;
+
++ /*
++ * In case of remap_file_pages() emulation, the file can represent
++ * removed IPC ID: propogate shm_lock() error to caller.
++ */
++ ret =__shm_open(vma);
++ if (ret)
++ return ret;
++
+ ret = sfd->file->f_op->mmap(sfd->file, vma);
+- if (ret != 0)
++ if (ret) {
++ shm_close(vma);
+ return ret;
++ }
+ sfd->vm_ops = vma->vm_ops;
+ #ifdef CONFIG_MMU
+- BUG_ON(!sfd->vm_ops->fault);
++ WARN_ON(!sfd->vm_ops->fault);
+ #endif
+ vma->vm_ops = &shm_vm_ops;
+- shm_open(vma);
+-
+- return ret;
++ return 0;
+ }
+
+ static int shm_release(struct inode *ino, struct file *file)
+@@ -1192,7 +1226,6 @@ out_fput:
+ out_nattch:
+ down_write(&shm_ids(ns).rwsem);
+ shp = shm_lock(ns, shmid);
+- BUG_ON(IS_ERR(shp));
+ shp->shm_nattch--;
+ if (shm_may_destroy(ns, shp))
+ shm_destroy(ns, shp);
+diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
+index 141d562064a7..6582410a71c7 100644
+--- a/kernel/bpf/verifier.c
++++ b/kernel/bpf/verifier.c
+@@ -1944,7 +1944,7 @@ static void adjust_branches(struct bpf_prog *prog, int pos, int delta)
+ /* adjust offset of jmps if necessary */
+ if (i < pos && i + insn->off + 1 > pos)
+ insn->off += delta;
+- else if (i > pos && i + insn->off + 1 < pos)
++ else if (i > pos + delta && i + insn->off + 1 <= pos + delta)
+ insn->off -= delta;
+ }
+ }
+diff --git a/kernel/cgroup.c b/kernel/cgroup.c
+index 4d65b66ae60d..359da3abb004 100644
+--- a/kernel/cgroup.c
++++ b/kernel/cgroup.c
+@@ -4481,6 +4481,7 @@ static void init_and_link_css(struct cgroup_subsys_state *css,
+ INIT_LIST_HEAD(&css->sibling);
+ INIT_LIST_HEAD(&css->children);
+ css->serial_nr = css_serial_nr_next++;
++ atomic_set(&css->online_cnt, 0);
+
+ if (cgroup_parent(cgrp)) {
+ css->parent = cgroup_css(cgroup_parent(cgrp), ss);
+@@ -4503,6 +4504,10 @@ static int online_css(struct cgroup_subsys_state *css)
+ if (!ret) {
+ css->flags |= CSS_ONLINE;
+ rcu_assign_pointer(css->cgroup->subsys[ss->id], css);
++
++ atomic_inc(&css->online_cnt);
++ if (css->parent)
++ atomic_inc(&css->parent->online_cnt);
+ }
+ return ret;
+ }
+@@ -4740,10 +4745,15 @@ static void css_killed_work_fn(struct work_struct *work)
+ container_of(work, struct cgroup_subsys_state, destroy_work);
+
+ mutex_lock(&cgroup_mutex);
+- offline_css(css);
+- mutex_unlock(&cgroup_mutex);
+
+- css_put(css);
++ do {
++ offline_css(css);
++ css_put(css);
++ /* @css can't go away while we're holding cgroup_mutex */
++ css = css->parent;
++ } while (css && atomic_dec_and_test(&css->online_cnt));
++
++ mutex_unlock(&cgroup_mutex);
+ }
+
+ /* css kill confirmation processing requires process context, bounce */
+@@ -4752,8 +4762,10 @@ static void css_killed_ref_fn(struct percpu_ref *ref)
+ struct cgroup_subsys_state *css =
+ container_of(ref, struct cgroup_subsys_state, refcnt);
+
+- INIT_WORK(&css->destroy_work, css_killed_work_fn);
+- queue_work(cgroup_destroy_wq, &css->destroy_work);
++ if (atomic_dec_and_test(&css->online_cnt)) {
++ INIT_WORK(&css->destroy_work, css_killed_work_fn);
++ queue_work(cgroup_destroy_wq, &css->destroy_work);
++ }
+ }
+
+ /**
+diff --git a/kernel/workqueue.c b/kernel/workqueue.c
+index 5c01664c26e2..6d631161705c 100644
+--- a/kernel/workqueue.c
++++ b/kernel/workqueue.c
+@@ -127,6 +127,11 @@ enum {
+ *
+ * PR: wq_pool_mutex protected for writes. Sched-RCU protected for reads.
+ *
++ * PW: wq_pool_mutex and wq->mutex protected for writes. Either for reads.
++ *
++ * PWR: wq_pool_mutex and wq->mutex protected for writes. Either or
++ * sched-RCU for reads.
++ *
+ * WQ: wq->mutex protected.
+ *
+ * WR: wq->mutex protected for writes. Sched-RCU protected for reads.
+@@ -247,8 +252,8 @@ struct workqueue_struct {
+ int nr_drainers; /* WQ: drain in progress */
+ int saved_max_active; /* WQ: saved pwq max_active */
+
+- struct workqueue_attrs *unbound_attrs; /* WQ: only for unbound wqs */
+- struct pool_workqueue *dfl_pwq; /* WQ: only for unbound wqs */
++ struct workqueue_attrs *unbound_attrs; /* PW: only for unbound wqs */
++ struct pool_workqueue *dfl_pwq; /* PW: only for unbound wqs */
+
+ #ifdef CONFIG_SYSFS
+ struct wq_device *wq_dev; /* I: for sysfs interface */
+@@ -268,7 +273,7 @@ struct workqueue_struct {
+ /* hot fields used during command issue, aligned to cacheline */
+ unsigned int flags ____cacheline_aligned; /* WQ: WQ_* flags */
+ struct pool_workqueue __percpu *cpu_pwqs; /* I: per-cpu pwqs */
+- struct pool_workqueue __rcu *numa_pwq_tbl[]; /* FR: unbound pwqs indexed by node */
++ struct pool_workqueue __rcu *numa_pwq_tbl[]; /* PWR: unbound pwqs indexed by node */
+ };
+
+ static struct kmem_cache *pwq_cache;
+@@ -347,6 +352,12 @@ static void workqueue_sysfs_unregister(struct workqueue_struct *wq);
+ lockdep_is_held(&wq->mutex), \
+ "sched RCU or wq->mutex should be held")
+
++#define assert_rcu_or_wq_mutex_or_pool_mutex(wq) \
++ rcu_lockdep_assert(rcu_read_lock_sched_held() || \
++ lockdep_is_held(&wq->mutex) || \
++ lockdep_is_held(&wq_pool_mutex), \
++ "sched RCU, wq->mutex or wq_pool_mutex should be held")
++
+ #define for_each_cpu_worker_pool(pool, cpu) \
+ for ((pool) = &per_cpu(cpu_worker_pools, cpu)[0]; \
+ (pool) < &per_cpu(cpu_worker_pools, cpu)[NR_STD_WORKER_POOLS]; \
+@@ -551,7 +562,8 @@ static int worker_pool_assign_id(struct worker_pool *pool)
+ * @wq: the target workqueue
+ * @node: the node ID
+ *
+- * This must be called either with pwq_lock held or sched RCU read locked.
++ * This must be called with any of wq_pool_mutex, wq->mutex or sched RCU
++ * read locked.
+ * If the pwq needs to be used beyond the locking in effect, the caller is
+ * responsible for guaranteeing that the pwq stays online.
+ *
+@@ -560,7 +572,17 @@ static int worker_pool_assign_id(struct worker_pool *pool)
+ static struct pool_workqueue *unbound_pwq_by_node(struct workqueue_struct *wq,
+ int node)
+ {
+- assert_rcu_or_wq_mutex(wq);
++ assert_rcu_or_wq_mutex_or_pool_mutex(wq);
++
++ /*
++ * XXX: @node can be NUMA_NO_NODE if CPU goes offline while a
++ * delayed item is pending. The plan is to keep CPU -> NODE
++ * mapping valid and stable across CPU on/offlines. Once that
++ * happens, this workaround can be removed.
++ */
++ if (unlikely(node == NUMA_NO_NODE))
++ return wq->dfl_pwq;
++
+ return rcu_dereference_raw(wq->numa_pwq_tbl[node]);
+ }
+
+@@ -1451,13 +1473,13 @@ static void __queue_delayed_work(int cpu, struct workqueue_struct *wq,
+ timer_stats_timer_set_start_info(&dwork->timer);
+
+ dwork->wq = wq;
+- /* timer isn't guaranteed to run in this cpu, record earlier */
+- if (cpu == WORK_CPU_UNBOUND)
+- cpu = raw_smp_processor_id();
+ dwork->cpu = cpu;
+ timer->expires = jiffies + delay;
+
+- add_timer_on(timer, cpu);
++ if (unlikely(cpu != WORK_CPU_UNBOUND))
++ add_timer_on(timer, cpu);
++ else
++ add_timer(timer);
+ }
+
+ /**
+@@ -3425,17 +3447,6 @@ static struct pool_workqueue *alloc_unbound_pwq(struct workqueue_struct *wq,
+ return pwq;
+ }
+
+-/* undo alloc_unbound_pwq(), used only in the error path */
+-static void free_unbound_pwq(struct pool_workqueue *pwq)
+-{
+- lockdep_assert_held(&wq_pool_mutex);
+-
+- if (pwq) {
+- put_unbound_pool(pwq->pool);
+- kmem_cache_free(pwq_cache, pwq);
+- }
+-}
+-
+ /**
+ * wq_calc_node_mask - calculate a wq_attrs' cpumask for the specified node
+ * @attrs: the wq_attrs of interest
+@@ -3488,6 +3499,7 @@ static struct pool_workqueue *numa_pwq_tbl_install(struct workqueue_struct *wq,
+ {
+ struct pool_workqueue *old_pwq;
+
++ lockdep_assert_held(&wq_pool_mutex);
+ lockdep_assert_held(&wq->mutex);
+
+ /* link_pwq() can handle duplicate calls */
+@@ -3498,42 +3510,48 @@ static struct pool_workqueue *numa_pwq_tbl_install(struct workqueue_struct *wq,
+ return old_pwq;
+ }
+
+-/**
+- * apply_workqueue_attrs - apply new workqueue_attrs to an unbound workqueue
+- * @wq: the target workqueue
+- * @attrs: the workqueue_attrs to apply, allocated with alloc_workqueue_attrs()
+- *
+- * Apply @attrs to an unbound workqueue @wq. Unless disabled, on NUMA
+- * machines, this function maps a separate pwq to each NUMA node with
+- * possibles CPUs in @attrs->cpumask so that work items are affine to the
+- * NUMA node it was issued on. Older pwqs are released as in-flight work
+- * items finish. Note that a work item which repeatedly requeues itself
+- * back-to-back will stay on its current pwq.
+- *
+- * Performs GFP_KERNEL allocations.
+- *
+- * Return: 0 on success and -errno on failure.
+- */
+-int apply_workqueue_attrs(struct workqueue_struct *wq,
+- const struct workqueue_attrs *attrs)
++/* context to store the prepared attrs & pwqs before applying */
++struct apply_wqattrs_ctx {
++ struct workqueue_struct *wq; /* target workqueue */
++ struct workqueue_attrs *attrs; /* attrs to apply */
++ struct pool_workqueue *dfl_pwq;
++ struct pool_workqueue *pwq_tbl[];
++};
++
++/* free the resources after success or abort */
++static void apply_wqattrs_cleanup(struct apply_wqattrs_ctx *ctx)
+ {
++ if (ctx) {
++ int node;
++
++ for_each_node(node)
++ put_pwq_unlocked(ctx->pwq_tbl[node]);
++ put_pwq_unlocked(ctx->dfl_pwq);
++
++ free_workqueue_attrs(ctx->attrs);
++
++ kfree(ctx);
++ }
++}
++
++/* allocate the attrs and pwqs for later installation */
++static struct apply_wqattrs_ctx *
++apply_wqattrs_prepare(struct workqueue_struct *wq,
++ const struct workqueue_attrs *attrs)
++{
++ struct apply_wqattrs_ctx *ctx;
+ struct workqueue_attrs *new_attrs, *tmp_attrs;
+- struct pool_workqueue **pwq_tbl, *dfl_pwq;
+- int node, ret;
++ int node;
+
+- /* only unbound workqueues can change attributes */
+- if (WARN_ON(!(wq->flags & WQ_UNBOUND)))
+- return -EINVAL;
++ lockdep_assert_held(&wq_pool_mutex);
+
+- /* creating multiple pwqs breaks ordering guarantee */
+- if (WARN_ON((wq->flags & __WQ_ORDERED) && !list_empty(&wq->pwqs)))
+- return -EINVAL;
++ ctx = kzalloc(sizeof(*ctx) + nr_node_ids * sizeof(ctx->pwq_tbl[0]),
++ GFP_KERNEL);
+
+- pwq_tbl = kzalloc(nr_node_ids * sizeof(pwq_tbl[0]), GFP_KERNEL);
+ new_attrs = alloc_workqueue_attrs(GFP_KERNEL);
+ tmp_attrs = alloc_workqueue_attrs(GFP_KERNEL);
+- if (!pwq_tbl || !new_attrs || !tmp_attrs)
+- goto enomem;
++ if (!ctx || !new_attrs || !tmp_attrs)
++ goto out_free;
+
+ /* make a copy of @attrs and sanitize it */
+ copy_workqueue_attrs(new_attrs, attrs);
+@@ -3547,75 +3565,111 @@ int apply_workqueue_attrs(struct workqueue_struct *wq,
+ copy_workqueue_attrs(tmp_attrs, new_attrs);
+
+ /*
+- * CPUs should stay stable across pwq creations and installations.
+- * Pin CPUs, determine the target cpumask for each node and create
+- * pwqs accordingly.
+- */
+- get_online_cpus();
+-
+- mutex_lock(&wq_pool_mutex);
+-
+- /*
+ * If something goes wrong during CPU up/down, we'll fall back to
+ * the default pwq covering whole @attrs->cpumask. Always create
+ * it even if we don't use it immediately.
+ */
+- dfl_pwq = alloc_unbound_pwq(wq, new_attrs);
+- if (!dfl_pwq)
+- goto enomem_pwq;
++ ctx->dfl_pwq = alloc_unbound_pwq(wq, new_attrs);
++ if (!ctx->dfl_pwq)
++ goto out_free;
+
+ for_each_node(node) {
+ if (wq_calc_node_cpumask(attrs, node, -1, tmp_attrs->cpumask)) {
+- pwq_tbl[node] = alloc_unbound_pwq(wq, tmp_attrs);
+- if (!pwq_tbl[node])
+- goto enomem_pwq;
++ ctx->pwq_tbl[node] = alloc_unbound_pwq(wq, tmp_attrs);
++ if (!ctx->pwq_tbl[node])
++ goto out_free;
+ } else {
+- dfl_pwq->refcnt++;
+- pwq_tbl[node] = dfl_pwq;
++ ctx->dfl_pwq->refcnt++;
++ ctx->pwq_tbl[node] = ctx->dfl_pwq;
+ }
+ }
+
+- mutex_unlock(&wq_pool_mutex);
++ ctx->attrs = new_attrs;
++ ctx->wq = wq;
++ free_workqueue_attrs(tmp_attrs);
++ return ctx;
++
++out_free:
++ free_workqueue_attrs(tmp_attrs);
++ free_workqueue_attrs(new_attrs);
++ apply_wqattrs_cleanup(ctx);
++ return NULL;
++}
++
++/* set attrs and install prepared pwqs, @ctx points to old pwqs on return */
++static void apply_wqattrs_commit(struct apply_wqattrs_ctx *ctx)
++{
++ int node;
+
+ /* all pwqs have been created successfully, let's install'em */
+- mutex_lock(&wq->mutex);
++ mutex_lock(&ctx->wq->mutex);
+
+- copy_workqueue_attrs(wq->unbound_attrs, new_attrs);
++ copy_workqueue_attrs(ctx->wq->unbound_attrs, ctx->attrs);
+
+ /* save the previous pwq and install the new one */
+ for_each_node(node)
+- pwq_tbl[node] = numa_pwq_tbl_install(wq, node, pwq_tbl[node]);
++ ctx->pwq_tbl[node] = numa_pwq_tbl_install(ctx->wq, node,
++ ctx->pwq_tbl[node]);
+
+ /* @dfl_pwq might not have been used, ensure it's linked */
+- link_pwq(dfl_pwq);
+- swap(wq->dfl_pwq, dfl_pwq);
++ link_pwq(ctx->dfl_pwq);
++ swap(ctx->wq->dfl_pwq, ctx->dfl_pwq);
+
+- mutex_unlock(&wq->mutex);
++ mutex_unlock(&ctx->wq->mutex);
++}
+
+- /* put the old pwqs */
+- for_each_node(node)
+- put_pwq_unlocked(pwq_tbl[node]);
+- put_pwq_unlocked(dfl_pwq);
++/**
++ * apply_workqueue_attrs - apply new workqueue_attrs to an unbound workqueue
++ * @wq: the target workqueue
++ * @attrs: the workqueue_attrs to apply, allocated with alloc_workqueue_attrs()
++ *
++ * Apply @attrs to an unbound workqueue @wq. Unless disabled, on NUMA
++ * machines, this function maps a separate pwq to each NUMA node with
++ * possibles CPUs in @attrs->cpumask so that work items are affine to the
++ * NUMA node it was issued on. Older pwqs are released as in-flight work
++ * items finish. Note that a work item which repeatedly requeues itself
++ * back-to-back will stay on its current pwq.
++ *
++ * Performs GFP_KERNEL allocations.
++ *
++ * Return: 0 on success and -errno on failure.
++ */
++int apply_workqueue_attrs(struct workqueue_struct *wq,
++ const struct workqueue_attrs *attrs)
++{
++ struct apply_wqattrs_ctx *ctx;
++ int ret = -ENOMEM;
+
+- put_online_cpus();
+- ret = 0;
+- /* fall through */
+-out_free:
+- free_workqueue_attrs(tmp_attrs);
+- free_workqueue_attrs(new_attrs);
+- kfree(pwq_tbl);
+- return ret;
++ /* only unbound workqueues can change attributes */
++ if (WARN_ON(!(wq->flags & WQ_UNBOUND)))
++ return -EINVAL;
++
++ /* creating multiple pwqs breaks ordering guarantee */
++ if (WARN_ON((wq->flags & __WQ_ORDERED) && !list_empty(&wq->pwqs)))
++ return -EINVAL;
++
++ /*
++ * CPUs should stay stable across pwq creations and installations.
++ * Pin CPUs, determine the target cpumask for each node and create
++ * pwqs accordingly.
++ */
++ get_online_cpus();
++ mutex_lock(&wq_pool_mutex);
++
++ ctx = apply_wqattrs_prepare(wq, attrs);
++
++ /* the ctx has been prepared successfully, let's commit it */
++ if (ctx) {
++ apply_wqattrs_commit(ctx);
++ ret = 0;
++ }
+
+-enomem_pwq:
+- free_unbound_pwq(dfl_pwq);
+- for_each_node(node)
+- if (pwq_tbl && pwq_tbl[node] != dfl_pwq)
+- free_unbound_pwq(pwq_tbl[node]);
+ mutex_unlock(&wq_pool_mutex);
+ put_online_cpus();
+-enomem:
+- ret = -ENOMEM;
+- goto out_free;
++
++ apply_wqattrs_cleanup(ctx);
++
++ return ret;
+ }
+
+ /**
+diff --git a/lib/klist.c b/lib/klist.c
+index 89b485a2a58d..2a072bfaeace 100644
+--- a/lib/klist.c
++++ b/lib/klist.c
+@@ -282,9 +282,9 @@ void klist_iter_init_node(struct klist *k, struct klist_iter *i,
+ struct klist_node *n)
+ {
+ i->i_klist = k;
+- i->i_cur = n;
+- if (n)
+- kref_get(&n->n_ref);
++ i->i_cur = NULL;
++ if (n && kref_get_unless_zero(&n->n_ref))
++ i->i_cur = n;
+ }
+ EXPORT_SYMBOL_GPL(klist_iter_init_node);
+
+diff --git a/mm/mmap.c b/mm/mmap.c
+index b639fa2721d8..d30b8f8f02b1 100644
+--- a/mm/mmap.c
++++ b/mm/mmap.c
+@@ -2654,12 +2654,29 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
+ if (!vma || !(vma->vm_flags & VM_SHARED))
+ goto out;
+
+- if (start < vma->vm_start || start + size > vma->vm_end)
++ if (start < vma->vm_start)
+ goto out;
+
+- if (pgoff == linear_page_index(vma, start)) {
+- ret = 0;
+- goto out;
++ if (start + size > vma->vm_end) {
++ struct vm_area_struct *next;
++
++ for (next = vma->vm_next; next; next = next->vm_next) {
++ /* hole between vmas ? */
++ if (next->vm_start != next->vm_prev->vm_end)
++ goto out;
++
++ if (next->vm_file != vma->vm_file)
++ goto out;
++
++ if (next->vm_flags != vma->vm_flags)
++ goto out;
++
++ if (start + size <= next->vm_end)
++ break;
++ }
++
++ if (!next)
++ goto out;
+ }
+
+ prot |= vma->vm_flags & VM_READ ? PROT_READ : 0;
+@@ -2669,9 +2686,16 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
+ flags &= MAP_NONBLOCK;
+ flags |= MAP_SHARED | MAP_FIXED | MAP_POPULATE;
+ if (vma->vm_flags & VM_LOCKED) {
++ struct vm_area_struct *tmp;
+ flags |= MAP_LOCKED;
++
+ /* drop PG_Mlocked flag for over-mapped range */
+- munlock_vma_pages_range(vma, start, start + size);
++ for (tmp = vma; tmp->vm_start >= start + size;
++ tmp = tmp->vm_next) {
++ munlock_vma_pages_range(tmp,
++ max(tmp->vm_start, start),
++ min(tmp->vm_end, start + size));
++ }
+ }
+
+ file = get_file(vma->vm_file);
+diff --git a/net/bridge/br.c b/net/bridge/br.c
+index 02c24cf63c34..c72e01cf09d0 100644
+--- a/net/bridge/br.c
++++ b/net/bridge/br.c
+@@ -121,6 +121,7 @@ static struct notifier_block br_device_notifier = {
+ .notifier_call = br_device_event
+ };
+
++/* called with RTNL */
+ static int br_netdev_switch_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+ {
+@@ -130,7 +131,6 @@ static int br_netdev_switch_event(struct notifier_block *unused,
+ struct netdev_switch_notifier_fdb_info *fdb_info;
+ int err = NOTIFY_DONE;
+
+- rtnl_lock();
+ p = br_port_get_rtnl(dev);
+ if (!p)
+ goto out;
+@@ -155,7 +155,6 @@ static int br_netdev_switch_event(struct notifier_block *unused,
+ }
+
+ out:
+- rtnl_unlock();
+ return err;
+ }
+
+diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
+index 2c35c02a931e..3556791fdc6e 100644
+--- a/net/core/flow_dissector.c
++++ b/net/core/flow_dissector.c
+@@ -113,7 +113,6 @@ ip:
+ case htons(ETH_P_IPV6): {
+ const struct ipv6hdr *iph;
+ struct ipv6hdr _iph;
+- __be32 flow_label;
+
+ ipv6:
+ iph = __skb_header_pointer(skb, nhoff, sizeof(_iph), data, hlen, &_iph);
+@@ -130,8 +129,9 @@ ipv6:
+ flow->src = (__force __be32)ipv6_addr_hash(&iph->saddr);
+ flow->dst = (__force __be32)ipv6_addr_hash(&iph->daddr);
+
+- flow_label = ip6_flowlabel(iph);
+- if (flow_label) {
++ if (skb && ip6_flowlabel(iph)) {
++ __be32 flow_label = ip6_flowlabel(iph);
++
+ /* Awesome, IPv6 packet has a flow label so we can
+ * use that to represent the ports without any
+ * further dissection.
+@@ -233,6 +233,13 @@ ipv6:
+ return false;
+ proto = eth->h_proto;
+ nhoff += sizeof(*eth);
++
++ /* Cap headers that we access via pointers at the
++ * end of the Ethernet header as our maximum alignment
++ * at that point is only 2 bytes.
++ */
++ if (NET_IP_ALIGN)
++ hlen = nhoff;
+ }
+ goto again;
+ }
+diff --git a/net/core/scm.c b/net/core/scm.c
+index 8a1741b14302..dce0acb929f1 100644
+--- a/net/core/scm.c
++++ b/net/core/scm.c
+@@ -87,6 +87,7 @@ static int scm_fp_copy(struct cmsghdr *cmsg, struct scm_fp_list **fplp)
+ *fplp = fpl;
+ fpl->count = 0;
+ fpl->max = SCM_MAX_FD;
++ fpl->user = NULL;
+ }
+ fpp = &fpl->fp[fpl->count];
+
+@@ -107,6 +108,10 @@ static int scm_fp_copy(struct cmsghdr *cmsg, struct scm_fp_list **fplp)
+ *fpp++ = file;
+ fpl->count++;
+ }
++
++ if (!fpl->user)
++ fpl->user = get_uid(current_user());
++
+ return num;
+ }
+
+@@ -119,6 +124,7 @@ void __scm_destroy(struct scm_cookie *scm)
+ scm->fp = NULL;
+ for (i=fpl->count-1; i>=0; i--)
+ fput(fpl->fp[i]);
++ free_uid(fpl->user);
+ kfree(fpl);
+ }
+ }
+@@ -336,6 +342,7 @@ struct scm_fp_list *scm_fp_dup(struct scm_fp_list *fpl)
+ for (i = 0; i < fpl->count; i++)
+ get_file(fpl->fp[i]);
+ new_fpl->max = new_fpl->count;
++ new_fpl->user = get_uid(fpl->user);
+ }
+ return new_fpl;
+ }
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 2e5fcda16570..c9793c6c5005 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -79,6 +79,8 @@
+
+ struct kmem_cache *skbuff_head_cache __read_mostly;
+ static struct kmem_cache *skbuff_fclone_cache __read_mostly;
++int sysctl_max_skb_frags __read_mostly = MAX_SKB_FRAGS;
++EXPORT_SYMBOL(sysctl_max_skb_frags);
+
+ /**
+ * skb_panic - private function for out-of-line support
+diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
+index 95b6139d710c..a6beb7b6ae55 100644
+--- a/net/core/sysctl_net_core.c
++++ b/net/core/sysctl_net_core.c
+@@ -26,6 +26,7 @@ static int zero = 0;
+ static int one = 1;
+ static int min_sndbuf = SOCK_MIN_SNDBUF;
+ static int min_rcvbuf = SOCK_MIN_RCVBUF;
++static int max_skb_frags = MAX_SKB_FRAGS;
+
+ static int net_msg_warn; /* Unused, but still a sysctl */
+
+@@ -392,6 +393,15 @@ static struct ctl_table net_core_table[] = {
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
++ {
++ .procname = "max_skb_frags",
++ .data = &sysctl_max_skb_frags,
++ .maxlen = sizeof(int),
++ .mode = 0644,
++ .proc_handler = proc_dointvec_minmax,
++ .extra1 = &one,
++ .extra2 = &max_skb_frags,
++ },
+ { }
+ };
+
+diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
+index 419d23c53ec7..280d46f947ea 100644
+--- a/net/ipv4/devinet.c
++++ b/net/ipv4/devinet.c
+@@ -1839,7 +1839,7 @@ static int inet_netconf_get_devconf(struct sk_buff *in_skb,
+ if (err < 0)
+ goto errout;
+
+- err = EINVAL;
++ err = -EINVAL;
+ if (!tb[NETCONFA_IFINDEX])
+ goto errout;
+
+diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
+index 6ddde89996f4..b6c7bdea4853 100644
+--- a/net/ipv4/ip_sockglue.c
++++ b/net/ipv4/ip_sockglue.c
+@@ -249,6 +249,8 @@ int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc,
+ switch (cmsg->cmsg_type) {
+ case IP_RETOPTS:
+ err = cmsg->cmsg_len - CMSG_ALIGN(sizeof(struct cmsghdr));
++
++ /* Our caller is responsible for freeing ipc->opt */
+ err = ip_options_get(net, &ipc->opt, CMSG_DATA(cmsg),
+ err < 40 ? err : 40);
+ if (err)
+diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
+index 05ff44b758df..f6ee0d561aab 100644
+--- a/net/ipv4/ping.c
++++ b/net/ipv4/ping.c
+@@ -745,8 +745,10 @@ static int ping_v4_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+
+ if (msg->msg_controllen) {
+ err = ip_cmsg_send(sock_net(sk), msg, &ipc, false);
+- if (err)
++ if (unlikely(err)) {
++ kfree(ipc.opt);
+ return err;
++ }
+ if (ipc.opt)
+ free = 1;
+ }
+diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
+index 561cd4b8fc6e..c77aac75759d 100644
+--- a/net/ipv4/raw.c
++++ b/net/ipv4/raw.c
+@@ -543,8 +543,10 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+
+ if (msg->msg_controllen) {
+ err = ip_cmsg_send(sock_net(sk), msg, &ipc, false);
+- if (err)
++ if (unlikely(err)) {
++ kfree(ipc.opt);
+ goto out;
++ }
+ if (ipc.opt)
+ free = 1;
+ }
+diff --git a/net/ipv4/route.c b/net/ipv4/route.c
+index f45f2a12f37b..1d3cdb4d4ebc 100644
+--- a/net/ipv4/route.c
++++ b/net/ipv4/route.c
+@@ -125,6 +125,7 @@ static int ip_rt_mtu_expires __read_mostly = 10 * 60 * HZ;
+ static int ip_rt_min_pmtu __read_mostly = 512 + 20 + 20;
+ static int ip_rt_min_advmss __read_mostly = 256;
+
++static int ip_rt_gc_timeout __read_mostly = RT_GC_TIMEOUT;
+ /*
+ * Interface to generic destination cache.
+ */
+@@ -753,7 +754,7 @@ static void __ip_do_redirect(struct rtable *rt, struct sk_buff *skb, struct flow
+ struct fib_nh *nh = &FIB_RES_NH(res);
+
+ update_or_create_fnhe(nh, fl4->daddr, new_gw,
+- 0, 0);
++ 0, jiffies + ip_rt_gc_timeout);
+ }
+ if (kill_route)
+ rt->dst.obsolete = DST_OBSOLETE_KILL;
+@@ -1538,6 +1539,36 @@ static void ip_handle_martian_source(struct net_device *dev,
+ #endif
+ }
+
++static void ip_del_fnhe(struct fib_nh *nh, __be32 daddr)
++{
++ struct fnhe_hash_bucket *hash;
++ struct fib_nh_exception *fnhe, __rcu **fnhe_p;
++ u32 hval = fnhe_hashfun(daddr);
++
++ spin_lock_bh(&fnhe_lock);
++
++ hash = rcu_dereference_protected(nh->nh_exceptions,
++ lockdep_is_held(&fnhe_lock));
++ hash += hval;
++
++ fnhe_p = &hash->chain;
++ fnhe = rcu_dereference_protected(*fnhe_p, lockdep_is_held(&fnhe_lock));
++ while (fnhe) {
++ if (fnhe->fnhe_daddr == daddr) {
++ rcu_assign_pointer(*fnhe_p, rcu_dereference_protected(
++ fnhe->fnhe_next, lockdep_is_held(&fnhe_lock)));
++ fnhe_flush_routes(fnhe);
++ kfree_rcu(fnhe, rcu);
++ break;
++ }
++ fnhe_p = &fnhe->fnhe_next;
++ fnhe = rcu_dereference_protected(fnhe->fnhe_next,
++ lockdep_is_held(&fnhe_lock));
++ }
++
++ spin_unlock_bh(&fnhe_lock);
++}
++
+ /* called in rcu_read_lock() section */
+ static int __mkroute_input(struct sk_buff *skb,
+ const struct fib_result *res,
+@@ -1592,11 +1623,20 @@ static int __mkroute_input(struct sk_buff *skb,
+
+ fnhe = find_exception(&FIB_RES_NH(*res), daddr);
+ if (do_cache) {
+- if (fnhe)
++ if (fnhe) {
+ rth = rcu_dereference(fnhe->fnhe_rth_input);
+- else
+- rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
++ if (rth && rth->dst.expires &&
++ time_after(jiffies, rth->dst.expires)) {
++ ip_del_fnhe(&FIB_RES_NH(*res), daddr);
++ fnhe = NULL;
++ } else {
++ goto rt_cache;
++ }
++ }
++
++ rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
+
++rt_cache:
+ if (rt_cache_valid(rth)) {
+ skb_dst_set_noref(skb, &rth->dst);
+ goto out;
+@@ -1945,19 +1985,29 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
+ struct fib_nh *nh = &FIB_RES_NH(*res);
+
+ fnhe = find_exception(nh, fl4->daddr);
+- if (fnhe)
++ if (fnhe) {
+ prth = &fnhe->fnhe_rth_output;
+- else {
+- if (unlikely(fl4->flowi4_flags &
+- FLOWI_FLAG_KNOWN_NH &&
+- !(nh->nh_gw &&
+- nh->nh_scope == RT_SCOPE_LINK))) {
+- do_cache = false;
+- goto add;
++ rth = rcu_dereference(*prth);
++ if (rth && rth->dst.expires &&
++ time_after(jiffies, rth->dst.expires)) {
++ ip_del_fnhe(nh, fl4->daddr);
++ fnhe = NULL;
++ } else {
++ goto rt_cache;
+ }
+- prth = raw_cpu_ptr(nh->nh_pcpu_rth_output);
+ }
++
++ if (unlikely(fl4->flowi4_flags &
++ FLOWI_FLAG_KNOWN_NH &&
++ !(nh->nh_gw &&
++ nh->nh_scope == RT_SCOPE_LINK))) {
++ do_cache = false;
++ goto add;
++ }
++ prth = raw_cpu_ptr(nh->nh_pcpu_rth_output);
+ rth = rcu_dereference(*prth);
++
++rt_cache:
+ if (rt_cache_valid(rth)) {
+ dst_hold(&rth->dst);
+ return rth;
+@@ -2504,7 +2554,6 @@ void ip_rt_multicast_event(struct in_device *in_dev)
+ }
+
+ #ifdef CONFIG_SYSCTL
+-static int ip_rt_gc_timeout __read_mostly = RT_GC_TIMEOUT;
+ static int ip_rt_gc_interval __read_mostly = 60 * HZ;
+ static int ip_rt_gc_min_interval __read_mostly = HZ / 2;
+ static int ip_rt_gc_elasticity __read_mostly = 8;
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index bb2ce74f6004..19d385a0f02d 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -279,6 +279,7 @@
+
+ #include <asm/uaccess.h>
+ #include <asm/ioctls.h>
++#include <asm/unaligned.h>
+ #include <net/busy_poll.h>
+
+ int sysctl_tcp_fin_timeout __read_mostly = TCP_FIN_TIMEOUT;
+@@ -921,7 +922,7 @@ new_segment:
+
+ i = skb_shinfo(skb)->nr_frags;
+ can_coalesce = skb_can_coalesce(skb, i, page, offset);
+- if (!can_coalesce && i >= MAX_SKB_FRAGS) {
++ if (!can_coalesce && i >= sysctl_max_skb_frags) {
+ tcp_mark_push(tp, skb);
+ goto new_segment;
+ }
+@@ -1187,7 +1188,7 @@ new_segment:
+
+ if (!skb_can_coalesce(skb, i, pfrag->page,
+ pfrag->offset)) {
+- if (i == MAX_SKB_FRAGS || !sg) {
++ if (i == sysctl_max_skb_frags || !sg) {
+ tcp_mark_push(tp, skb);
+ goto new_segment;
+ }
+@@ -2603,6 +2604,7 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info)
+ const struct inet_connection_sock *icsk = inet_csk(sk);
+ u32 now = tcp_time_stamp;
+ unsigned int start;
++ u64 rate64;
+ u32 rate;
+
+ memset(info, 0, sizeof(*info));
+@@ -2665,15 +2667,17 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info)
+ info->tcpi_total_retrans = tp->total_retrans;
+
+ rate = READ_ONCE(sk->sk_pacing_rate);
+- info->tcpi_pacing_rate = rate != ~0U ? rate : ~0ULL;
++ rate64 = rate != ~0U ? rate : ~0ULL;
++ put_unaligned(rate64, &info->tcpi_pacing_rate);
+
+ rate = READ_ONCE(sk->sk_max_pacing_rate);
+- info->tcpi_max_pacing_rate = rate != ~0U ? rate : ~0ULL;
++ rate64 = rate != ~0U ? rate : ~0ULL;
++ put_unaligned(rate64, &info->tcpi_max_pacing_rate);
+
+ do {
+ start = u64_stats_fetch_begin_irq(&tp->syncp);
+- info->tcpi_bytes_acked = tp->bytes_acked;
+- info->tcpi_bytes_received = tp->bytes_received;
++ put_unaligned(tp->bytes_acked, &info->tcpi_bytes_acked);
++ put_unaligned(tp->bytes_received, &info->tcpi_bytes_received);
+ } while (u64_stats_fetch_retry_irq(&tp->syncp, start));
+ }
+ EXPORT_SYMBOL_GPL(tcp_get_info);
+diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
+index cd18c3d3251e..13b92d595138 100644
+--- a/net/ipv4/tcp_ipv4.c
++++ b/net/ipv4/tcp_ipv4.c
+@@ -705,7 +705,8 @@ release_sk1:
+ outside socket context is ugly, certainly. What can I do?
+ */
+
+-static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
++static void tcp_v4_send_ack(struct net *net,
++ struct sk_buff *skb, u32 seq, u32 ack,
+ u32 win, u32 tsval, u32 tsecr, int oif,
+ struct tcp_md5sig_key *key,
+ int reply_flags, u8 tos)
+@@ -720,7 +721,6 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
+ ];
+ } rep;
+ struct ip_reply_arg arg;
+- struct net *net = dev_net(skb_dst(skb)->dev);
+
+ memset(&rep.th, 0, sizeof(struct tcphdr));
+ memset(&arg, 0, sizeof(arg));
+@@ -782,7 +782,8 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
+ struct inet_timewait_sock *tw = inet_twsk(sk);
+ struct tcp_timewait_sock *tcptw = tcp_twsk(sk);
+
+- tcp_v4_send_ack(skb, tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
++ tcp_v4_send_ack(sock_net(sk), skb,
++ tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
+ tcptw->tw_rcv_wnd >> tw->tw_rcv_wscale,
+ tcp_time_stamp + tcptw->tw_ts_offset,
+ tcptw->tw_ts_recent,
+@@ -801,8 +802,10 @@ static void tcp_v4_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+ /* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV
+ * sk->sk_state == TCP_SYN_RECV -> for Fast Open.
+ */
+- tcp_v4_send_ack(skb, (sk->sk_state == TCP_LISTEN) ?
+- tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
++ u32 seq = (sk->sk_state == TCP_LISTEN) ? tcp_rsk(req)->snt_isn + 1 :
++ tcp_sk(sk)->snd_nxt;
++
++ tcp_v4_send_ack(sock_net(sk), skb, seq,
+ tcp_rsk(req)->rcv_nxt, req->rcv_wnd,
+ tcp_time_stamp,
+ req->ts_recent,
+diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
+index 1b8c5ba7d5f7..a390174b96de 100644
+--- a/net/ipv4/udp.c
++++ b/net/ipv4/udp.c
+@@ -963,8 +963,10 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ if (msg->msg_controllen) {
+ err = ip_cmsg_send(sock_net(sk), msg, &ipc,
+ sk->sk_family == AF_INET6);
+- if (err)
++ if (unlikely(err)) {
++ kfree(ipc.opt);
+ return err;
++ }
+ if (ipc.opt)
+ free = 1;
+ connected = 0;
+diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
+index f4795b0d6e6e..f555f4fc1d62 100644
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -195,6 +195,7 @@ static struct ipv6_devconf ipv6_devconf __read_mostly = {
+ .max_addresses = IPV6_MAX_ADDRESSES,
+ .accept_ra_defrtr = 1,
+ .accept_ra_from_local = 0,
++ .accept_ra_min_hop_limit= 1,
+ .accept_ra_pinfo = 1,
+ #ifdef CONFIG_IPV6_ROUTER_PREF
+ .accept_ra_rtr_pref = 1,
+@@ -236,6 +237,7 @@ static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
+ .max_addresses = IPV6_MAX_ADDRESSES,
+ .accept_ra_defrtr = 1,
+ .accept_ra_from_local = 0,
++ .accept_ra_min_hop_limit= 1,
+ .accept_ra_pinfo = 1,
+ #ifdef CONFIG_IPV6_ROUTER_PREF
+ .accept_ra_rtr_pref = 1,
+@@ -567,7 +569,7 @@ static int inet6_netconf_get_devconf(struct sk_buff *in_skb,
+ if (err < 0)
+ goto errout;
+
+- err = EINVAL;
++ err = -EINVAL;
+ if (!tb[NETCONFA_IFINDEX])
+ goto errout;
+
+@@ -3421,6 +3423,7 @@ static void addrconf_dad_begin(struct inet6_ifaddr *ifp)
+ {
+ struct inet6_dev *idev = ifp->idev;
+ struct net_device *dev = idev->dev;
++ bool notify = false;
+
+ addrconf_join_solict(dev, &ifp->addr);
+
+@@ -3466,7 +3469,7 @@ static void addrconf_dad_begin(struct inet6_ifaddr *ifp)
+ /* Because optimistic nodes can use this address,
+ * notify listeners. If DAD fails, RTM_DELADDR is sent.
+ */
+- ipv6_ifa_notify(RTM_NEWADDR, ifp);
++ notify = true;
+ }
+ }
+
+@@ -3474,6 +3477,8 @@ static void addrconf_dad_begin(struct inet6_ifaddr *ifp)
+ out:
+ spin_unlock(&ifp->lock);
+ read_unlock_bh(&idev->lock);
++ if (notify)
++ ipv6_ifa_notify(RTM_NEWADDR, ifp);
+ }
+
+ static void addrconf_dad_start(struct inet6_ifaddr *ifp)
+@@ -4565,6 +4570,7 @@ static inline void ipv6_store_devconf(struct ipv6_devconf *cnf,
+ array[DEVCONF_MAX_DESYNC_FACTOR] = cnf->max_desync_factor;
+ array[DEVCONF_MAX_ADDRESSES] = cnf->max_addresses;
+ array[DEVCONF_ACCEPT_RA_DEFRTR] = cnf->accept_ra_defrtr;
++ array[DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT] = cnf->accept_ra_min_hop_limit;
+ array[DEVCONF_ACCEPT_RA_PINFO] = cnf->accept_ra_pinfo;
+ #ifdef CONFIG_IPV6_ROUTER_PREF
+ array[DEVCONF_ACCEPT_RA_RTR_PREF] = cnf->accept_ra_rtr_pref;
+@@ -5458,6 +5464,13 @@ static struct addrconf_sysctl_table
+ .proc_handler = proc_dointvec,
+ },
+ {
++ .procname = "accept_ra_min_hop_limit",
++ .data = &ipv6_devconf.accept_ra_min_hop_limit,
++ .maxlen = sizeof(int),
++ .mode = 0644,
++ .proc_handler = proc_dointvec,
++ },
++ {
+ .procname = "accept_ra_pinfo",
+ .data = &ipv6_devconf.accept_ra_pinfo,
+ .maxlen = sizeof(int),
+diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
+index 13ca4cf5616f..8e6cb3f14326 100644
+--- a/net/ipv6/datagram.c
++++ b/net/ipv6/datagram.c
+@@ -162,6 +162,9 @@ ipv4_connected:
+ fl6.fl6_dport = inet->inet_dport;
+ fl6.fl6_sport = inet->inet_sport;
+
++ if (!fl6.flowi6_oif)
++ fl6.flowi6_oif = np->sticky_pktinfo.ipi6_ifindex;
++
+ if (!fl6.flowi6_oif && (addr_type&IPV6_ADDR_MULTICAST))
+ fl6.flowi6_oif = np->mcast_oif;
+
+diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
+index d491125011c4..db939e4ac68a 100644
+--- a/net/ipv6/ip6_flowlabel.c
++++ b/net/ipv6/ip6_flowlabel.c
+@@ -540,12 +540,13 @@ int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen)
+ }
+ spin_lock_bh(&ip6_sk_fl_lock);
+ for (sflp = &np->ipv6_fl_list;
+- (sfl = rcu_dereference(*sflp)) != NULL;
++ (sfl = rcu_dereference_protected(*sflp,
++ lockdep_is_held(&ip6_sk_fl_lock))) != NULL;
+ sflp = &sfl->next) {
+ if (sfl->fl->label == freq.flr_label) {
+ if (freq.flr_label == (np->flow_label&IPV6_FLOWLABEL_MASK))
+ np->flow_label &= ~IPV6_FLOWLABEL_MASK;
+- *sflp = rcu_dereference(sfl->next);
++ *sflp = sfl->next;
+ spin_unlock_bh(&ip6_sk_fl_lock);
+ fl_release(sfl->fl);
+ kfree_rcu(sfl, rcu);
+diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
+index f50228b0abe5..36b9ac48b8fb 100644
+--- a/net/ipv6/ip6_output.c
++++ b/net/ipv6/ip6_output.c
+@@ -885,6 +885,7 @@ static int ip6_dst_lookup_tail(struct sock *sk,
+ struct rt6_info *rt;
+ #endif
+ int err;
++ int flags = 0;
+
+ /* The correct way to handle this would be to do
+ * ip6_route_get_saddr, and then ip6_route_output; however,
+@@ -916,10 +917,13 @@ static int ip6_dst_lookup_tail(struct sock *sk,
+ dst_release(*dst);
+ *dst = NULL;
+ }
++
++ if (fl6->flowi6_oif)
++ flags |= RT6_LOOKUP_F_IFACE;
+ }
+
+ if (!*dst)
+- *dst = ip6_route_output(net, sk, fl6);
++ *dst = ip6_route_output_flags(net, sk, fl6, flags);
+
+ err = (*dst)->error;
+ if (err)
+diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
+index 96f153c0846b..abb0bdda759a 100644
+--- a/net/ipv6/ndisc.c
++++ b/net/ipv6/ndisc.c
+@@ -1225,18 +1225,16 @@ static void ndisc_router_discovery(struct sk_buff *skb)
+
+ if (rt)
+ rt6_set_expires(rt, jiffies + (HZ * lifetime));
+- if (ra_msg->icmph.icmp6_hop_limit) {
+- /* Only set hop_limit on the interface if it is higher than
+- * the current hop_limit.
+- */
+- if (in6_dev->cnf.hop_limit < ra_msg->icmph.icmp6_hop_limit) {
++ if (in6_dev->cnf.accept_ra_min_hop_limit < 256 &&
++ ra_msg->icmph.icmp6_hop_limit) {
++ if (in6_dev->cnf.accept_ra_min_hop_limit <= ra_msg->icmph.icmp6_hop_limit) {
+ in6_dev->cnf.hop_limit = ra_msg->icmph.icmp6_hop_limit;
++ if (rt)
++ dst_metric_set(&rt->dst, RTAX_HOPLIMIT,
++ ra_msg->icmph.icmp6_hop_limit);
+ } else {
+- ND_PRINTK(2, warn, "RA: Got route advertisement with lower hop_limit than current\n");
++ ND_PRINTK(2, warn, "RA: Got route advertisement with lower hop_limit than minimum\n");
+ }
+- if (rt)
+- dst_metric_set(&rt->dst, RTAX_HOPLIMIT,
+- ra_msg->icmph.icmp6_hop_limit);
+ }
+
+ skip_defrtr:
+diff --git a/net/ipv6/route.c b/net/ipv6/route.c
+index f371fefa7fdc..fe70bd6a7516 100644
+--- a/net/ipv6/route.c
++++ b/net/ipv6/route.c
+@@ -1030,11 +1030,9 @@ static struct rt6_info *ip6_pol_route_output(struct net *net, struct fib6_table
+ return ip6_pol_route(net, table, fl6->flowi6_oif, fl6, flags);
+ }
+
+-struct dst_entry *ip6_route_output(struct net *net, const struct sock *sk,
+- struct flowi6 *fl6)
++struct dst_entry *ip6_route_output_flags(struct net *net, const struct sock *sk,
++ struct flowi6 *fl6, int flags)
+ {
+- int flags = 0;
+-
+ fl6->flowi6_iif = LOOPBACK_IFINDEX;
+
+ if ((sk && sk->sk_bound_dev_if) || rt6_need_strict(&fl6->daddr))
+@@ -1047,7 +1045,7 @@ struct dst_entry *ip6_route_output(struct net *net, const struct sock *sk,
+
+ return fib6_rule_lookup(net, fl6, flags, ip6_pol_route_output);
+ }
+-EXPORT_SYMBOL(ip6_route_output);
++EXPORT_SYMBOL_GPL(ip6_route_output_flags);
+
+ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_orig)
+ {
+diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
+index 6daa52a18d40..123f6f9f854c 100644
+--- a/net/iucv/af_iucv.c
++++ b/net/iucv/af_iucv.c
+@@ -709,6 +709,9 @@ static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr,
+ if (!addr || addr->sa_family != AF_IUCV)
+ return -EINVAL;
+
++ if (addr_len < sizeof(struct sockaddr_iucv))
++ return -EINVAL;
++
+ lock_sock(sk);
+ if (sk->sk_state != IUCV_OPEN) {
+ err = -EBADFD;
+diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
+index 9e13c2ff8789..fe92a08b3cd5 100644
+--- a/net/l2tp/l2tp_netlink.c
++++ b/net/l2tp/l2tp_netlink.c
+@@ -124,8 +124,13 @@ static int l2tp_tunnel_notify(struct genl_family *family,
+ ret = l2tp_nl_tunnel_send(msg, info->snd_portid, info->snd_seq,
+ NLM_F_ACK, tunnel, cmd);
+
+- if (ret >= 0)
+- return genlmsg_multicast_allns(family, msg, 0, 0, GFP_ATOMIC);
++ if (ret >= 0) {
++ ret = genlmsg_multicast_allns(family, msg, 0, 0, GFP_ATOMIC);
++ /* We don't care if no one is listening */
++ if (ret == -ESRCH)
++ ret = 0;
++ return ret;
++ }
+
+ nlmsg_free(msg);
+
+@@ -147,8 +152,13 @@ static int l2tp_session_notify(struct genl_family *family,
+ ret = l2tp_nl_session_send(msg, info->snd_portid, info->snd_seq,
+ NLM_F_ACK, session, cmd);
+
+- if (ret >= 0)
+- return genlmsg_multicast_allns(family, msg, 0, 0, GFP_ATOMIC);
++ if (ret >= 0) {
++ ret = genlmsg_multicast_allns(family, msg, 0, 0, GFP_ATOMIC);
++ /* We don't care if no one is listening */
++ if (ret == -ESRCH)
++ ret = 0;
++ return ret;
++ }
+
+ nlmsg_free(msg);
+
+diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
+index e13c3c3ea4ac..9d134ab3351f 100644
+--- a/net/sctp/protocol.c
++++ b/net/sctp/protocol.c
+@@ -60,6 +60,8 @@
+ #include <net/inet_common.h>
+ #include <net/inet_ecn.h>
+
++#define MAX_SCTP_PORT_HASH_ENTRIES (64 * 1024)
++
+ /* Global data structures. */
+ struct sctp_globals sctp_globals __read_mostly;
+
+@@ -1332,6 +1334,8 @@ static __init int sctp_init(void)
+ unsigned long limit;
+ int max_share;
+ int order;
++ int num_entries;
++ int max_entry_order;
+
+ sock_skb_cb_check_size(sizeof(struct sctp_ulpevent));
+
+@@ -1384,14 +1388,24 @@ static __init int sctp_init(void)
+
+ /* Size and allocate the association hash table.
+ * The methodology is similar to that of the tcp hash tables.
++ * Though not identical. Start by getting a goal size
+ */
+ if (totalram_pages >= (128 * 1024))
+ goal = totalram_pages >> (22 - PAGE_SHIFT);
+ else
+ goal = totalram_pages >> (24 - PAGE_SHIFT);
+
+- for (order = 0; (1UL << order) < goal; order++)
+- ;
++ /* Then compute the page order for said goal */
++ order = get_order(goal);
++
++ /* Now compute the required page order for the maximum sized table we
++ * want to create
++ */
++ max_entry_order = get_order(MAX_SCTP_PORT_HASH_ENTRIES *
++ sizeof(struct sctp_bind_hashbucket));
++
++ /* Limit the page order by that maximum hash table size */
++ order = min(order, max_entry_order);
+
+ do {
+ sctp_assoc_hashsize = (1UL << order) * PAGE_SIZE /
+@@ -1425,27 +1439,42 @@ static __init int sctp_init(void)
+ INIT_HLIST_HEAD(&sctp_ep_hashtable[i].chain);
+ }
+
+- /* Allocate and initialize the SCTP port hash table. */
++ /* Allocate and initialize the SCTP port hash table.
++ * Note that order is initalized to start at the max sized
++ * table we want to support. If we can't get that many pages
++ * reduce the order and try again
++ */
+ do {
+- sctp_port_hashsize = (1UL << order) * PAGE_SIZE /
+- sizeof(struct sctp_bind_hashbucket);
+- if ((sctp_port_hashsize > (64 * 1024)) && order > 0)
+- continue;
+ sctp_port_hashtable = (struct sctp_bind_hashbucket *)
+ __get_free_pages(GFP_ATOMIC|__GFP_NOWARN, order);
+ } while (!sctp_port_hashtable && --order > 0);
++
+ if (!sctp_port_hashtable) {
+ pr_err("Failed bind hash alloc\n");
+ status = -ENOMEM;
+ goto err_bhash_alloc;
+ }
++
++ /* Now compute the number of entries that will fit in the
++ * port hash space we allocated
++ */
++ num_entries = (1UL << order) * PAGE_SIZE /
++ sizeof(struct sctp_bind_hashbucket);
++
++ /* And finish by rounding it down to the nearest power of two
++ * this wastes some memory of course, but its needed because
++ * the hash function operates based on the assumption that
++ * that the number of entries is a power of two
++ */
++ sctp_port_hashsize = rounddown_pow_of_two(num_entries);
++
+ for (i = 0; i < sctp_port_hashsize; i++) {
+ spin_lock_init(&sctp_port_hashtable[i].lock);
+ INIT_HLIST_HEAD(&sctp_port_hashtable[i].chain);
+ }
+
+- pr_info("Hash tables configured (established %d bind %d)\n",
+- sctp_assoc_hashsize, sctp_port_hashsize);
++ pr_info("Hash tables configured (established %d bind %d/%d)\n",
++ sctp_assoc_hashsize, sctp_port_hashsize, num_entries);
+
+ sctp_sysctl_register();
+
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index 76e6ec62cf92..3c5833058b03 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -5555,6 +5555,7 @@ static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
+ struct sctp_hmac_algo_param *hmacs;
+ __u16 data_len = 0;
+ u32 num_idents;
++ int i;
+
+ if (!ep->auth_enable)
+ return -EACCES;
+@@ -5572,8 +5573,12 @@ static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
+ return -EFAULT;
+ if (put_user(num_idents, &p->shmac_num_idents))
+ return -EFAULT;
+- if (copy_to_user(p->shmac_idents, hmacs->hmac_ids, data_len))
+- return -EFAULT;
++ for (i = 0; i < num_idents; i++) {
++ __u16 hmacid = ntohs(hmacs->hmac_ids[i]);
++
++ if (copy_to_user(&p->shmac_idents[i], &hmacid, sizeof(__u16)))
++ return -EFAULT;
++ }
+ return 0;
+ }
+
+@@ -6653,6 +6658,7 @@ static int sctp_msghdr_parse(const struct msghdr *msg, sctp_cmsgs_t *cmsgs)
+
+ if (cmsgs->srinfo->sinfo_flags &
+ ~(SCTP_UNORDERED | SCTP_ADDR_OVER |
++ SCTP_SACK_IMMEDIATELY |
+ SCTP_ABORT | SCTP_EOF))
+ return -EINVAL;
+ break;
+@@ -6676,6 +6682,7 @@ static int sctp_msghdr_parse(const struct msghdr *msg, sctp_cmsgs_t *cmsgs)
+
+ if (cmsgs->sinfo->snd_flags &
+ ~(SCTP_UNORDERED | SCTP_ADDR_OVER |
++ SCTP_SACK_IMMEDIATELY |
+ SCTP_ABORT | SCTP_EOF))
+ return -EINVAL;
+ break;
+diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
+index 055453d48668..a8dbe8001e46 100644
+--- a/net/switchdev/switchdev.c
++++ b/net/switchdev/switchdev.c
+@@ -15,6 +15,7 @@
+ #include <linux/mutex.h>
+ #include <linux/notifier.h>
+ #include <linux/netdevice.h>
++#include <linux/rtnetlink.h>
+ #include <net/ip_fib.h>
+ #include <net/switchdev.h>
+
+@@ -64,7 +65,6 @@ int netdev_switch_port_stp_update(struct net_device *dev, u8 state)
+ }
+ EXPORT_SYMBOL_GPL(netdev_switch_port_stp_update);
+
+-static DEFINE_MUTEX(netdev_switch_mutex);
+ static RAW_NOTIFIER_HEAD(netdev_switch_notif_chain);
+
+ /**
+@@ -79,9 +79,9 @@ int register_netdev_switch_notifier(struct notifier_block *nb)
+ {
+ int err;
+
+- mutex_lock(&netdev_switch_mutex);
++ rtnl_lock();
+ err = raw_notifier_chain_register(&netdev_switch_notif_chain, nb);
+- mutex_unlock(&netdev_switch_mutex);
++ rtnl_unlock();
+ return err;
+ }
+ EXPORT_SYMBOL_GPL(register_netdev_switch_notifier);
+@@ -97,9 +97,9 @@ int unregister_netdev_switch_notifier(struct notifier_block *nb)
+ {
+ int err;
+
+- mutex_lock(&netdev_switch_mutex);
++ rtnl_lock();
+ err = raw_notifier_chain_unregister(&netdev_switch_notif_chain, nb);
+- mutex_unlock(&netdev_switch_mutex);
++ rtnl_unlock();
+ return err;
+ }
+ EXPORT_SYMBOL_GPL(unregister_netdev_switch_notifier);
+@@ -113,16 +113,17 @@ EXPORT_SYMBOL_GPL(unregister_netdev_switch_notifier);
+ * Call all network notifier blocks. This should be called by driver
+ * when it needs to propagate hardware event.
+ * Return values are same as for atomic_notifier_call_chain().
++ * rtnl_lock must be held.
+ */
+ int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev,
+ struct netdev_switch_notifier_info *info)
+ {
+ int err;
+
++ ASSERT_RTNL();
++
+ info->dev = dev;
+- mutex_lock(&netdev_switch_mutex);
+ err = raw_notifier_call_chain(&netdev_switch_notif_chain, val, info);
+- mutex_unlock(&netdev_switch_mutex);
+ return err;
+ }
+ EXPORT_SYMBOL_GPL(call_netdev_switch_notifiers);
+diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
+index 1c147c869c2e..948f316019d7 100644
+--- a/net/tipc/subscr.c
++++ b/net/tipc/subscr.c
+@@ -302,11 +302,10 @@ static void subscr_conn_msg_event(struct net *net, int conid,
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
+
+ spin_lock_bh(&subscriber->lock);
+- subscr_subscribe(net, (struct tipc_subscr *)buf, subscriber, &sub);
+- if (sub)
+- tipc_nametbl_subscribe(sub);
+- else
++ if (subscr_subscribe(net, (struct tipc_subscr *)buf, subscriber, &sub))
+ tipc_conn_terminate(tn->topsrv, subscriber->conid);
++ else
++ tipc_nametbl_subscribe(sub);
+ spin_unlock_bh(&subscriber->lock);
+ }
+
+diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
+index cb3a01a9ed38..535a642a1688 100644
+--- a/net/unix/af_unix.c
++++ b/net/unix/af_unix.c
+@@ -1464,7 +1464,7 @@ static void unix_detach_fds(struct scm_cookie *scm, struct sk_buff *skb)
+ UNIXCB(skb).fp = NULL;
+
+ for (i = scm->fp->count-1; i >= 0; i--)
+- unix_notinflight(scm->fp->fp[i]);
++ unix_notinflight(scm->fp->user, scm->fp->fp[i]);
+ }
+
+ static void unix_destruct_scm(struct sk_buff *skb)
+@@ -1529,7 +1529,7 @@ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
+ return -ENOMEM;
+
+ for (i = scm->fp->count - 1; i >= 0; i--)
+- unix_inflight(scm->fp->fp[i]);
++ unix_inflight(scm->fp->user, scm->fp->fp[i]);
+ return max_level;
+ }
+
+@@ -1714,7 +1714,12 @@ restart_locked:
+ goto out_unlock;
+ }
+
+- if (unlikely(unix_peer(other) != sk && unix_recvq_full(other))) {
++ /* other == sk && unix_peer(other) != sk if
++ * - unix_peer(sk) == NULL, destination address bound to sk
++ * - unix_peer(sk) == sk by time of get but disconnected before lock
++ */
++ if (other != sk &&
++ unlikely(unix_peer(other) != sk && unix_recvq_full(other))) {
+ if (timeo) {
+ timeo = unix_wait_for_peer(other, timeo);
+
+@@ -2131,6 +2136,7 @@ again:
+
+ if (signal_pending(current)) {
+ err = sock_intr_errno(timeo);
++ scm_destroy(&scm);
+ goto out;
+ }
+
+diff --git a/net/unix/diag.c b/net/unix/diag.c
+index c512f64d5287..4d9679701a6d 100644
+--- a/net/unix/diag.c
++++ b/net/unix/diag.c
+@@ -220,7 +220,7 @@ done:
+ return skb->len;
+ }
+
+-static struct sock *unix_lookup_by_ino(int ino)
++static struct sock *unix_lookup_by_ino(unsigned int ino)
+ {
+ int i;
+ struct sock *sk;
+diff --git a/net/unix/garbage.c b/net/unix/garbage.c
+index 8fcdc2283af5..6a0d48525fcf 100644
+--- a/net/unix/garbage.c
++++ b/net/unix/garbage.c
+@@ -116,7 +116,7 @@ struct sock *unix_get_socket(struct file *filp)
+ * descriptor if it is for an AF_UNIX socket.
+ */
+
+-void unix_inflight(struct file *fp)
++void unix_inflight(struct user_struct *user, struct file *fp)
+ {
+ struct sock *s = unix_get_socket(fp);
+
+@@ -133,11 +133,11 @@ void unix_inflight(struct file *fp)
+ }
+ unix_tot_inflight++;
+ }
+- fp->f_cred->user->unix_inflight++;
++ user->unix_inflight++;
+ spin_unlock(&unix_gc_lock);
+ }
+
+-void unix_notinflight(struct file *fp)
++void unix_notinflight(struct user_struct *user, struct file *fp)
+ {
+ struct sock *s = unix_get_socket(fp);
+
+@@ -152,7 +152,7 @@ void unix_notinflight(struct file *fp)
+ list_del_init(&u->link);
+ unix_tot_inflight--;
+ }
+- fp->f_cred->user->unix_inflight--;
++ user->unix_inflight--;
+ spin_unlock(&unix_gc_lock);
+ }
+
+diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
+index 582091498819..d6bc2b3af9ef 100644
+--- a/security/integrity/evm/evm_main.c
++++ b/security/integrity/evm/evm_main.c
+@@ -23,6 +23,7 @@
+ #include <linux/integrity.h>
+ #include <linux/evm.h>
+ #include <crypto/hash.h>
++#include <crypto/algapi.h>
+ #include "evm.h"
+
+ int evm_initialized;
+@@ -148,7 +149,7 @@ static enum integrity_status evm_verify_hmac(struct dentry *dentry,
+ xattr_value_len, calc.digest);
+ if (rc)
+ break;
+- rc = memcmp(xattr_data->digest, calc.digest,
++ rc = crypto_memneq(xattr_data->digest, calc.digest,
+ sizeof(calc.digest));
+ if (rc)
+ rc = -EINVAL;
+diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
+index 75888dd38a7f..aa999e747c94 100644
+--- a/sound/core/pcm_native.c
++++ b/sound/core/pcm_native.c
+@@ -74,6 +74,18 @@ static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream);
+ static DEFINE_RWLOCK(snd_pcm_link_rwlock);
+ static DECLARE_RWSEM(snd_pcm_link_rwsem);
+
++/* Writer in rwsem may block readers even during its waiting in queue,
++ * and this may lead to a deadlock when the code path takes read sem
++ * twice (e.g. one in snd_pcm_action_nonatomic() and another in
++ * snd_pcm_stream_lock()). As a (suboptimal) workaround, let writer to
++ * spin until it gets the lock.
++ */
++static inline void down_write_nonblock(struct rw_semaphore *lock)
++{
++ while (!down_write_trylock(lock))
++ cond_resched();
++}
++
+ /**
+ * snd_pcm_stream_lock - Lock the PCM stream
+ * @substream: PCM substream
+@@ -1816,7 +1828,7 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd)
+ res = -ENOMEM;
+ goto _nolock;
+ }
+- down_write(&snd_pcm_link_rwsem);
++ down_write_nonblock(&snd_pcm_link_rwsem);
+ write_lock_irq(&snd_pcm_link_rwlock);
+ if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN ||
+ substream->runtime->status->state != substream1->runtime->status->state ||
+@@ -1863,7 +1875,7 @@ static int snd_pcm_unlink(struct snd_pcm_substream *substream)
+ struct snd_pcm_substream *s;
+ int res = 0;
+
+- down_write(&snd_pcm_link_rwsem);
++ down_write_nonblock(&snd_pcm_link_rwsem);
+ write_lock_irq(&snd_pcm_link_rwlock);
+ if (!snd_pcm_stream_linked(substream)) {
+ res = -EALREADY;
+diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c
+index 801076687bb1..c850345c43b5 100644
+--- a/sound/core/seq/seq_memory.c
++++ b/sound/core/seq/seq_memory.c
+@@ -383,15 +383,20 @@ int snd_seq_pool_init(struct snd_seq_pool *pool)
+
+ if (snd_BUG_ON(!pool))
+ return -EINVAL;
+- if (pool->ptr) /* should be atomic? */
+- return 0;
+
+- pool->ptr = vmalloc(sizeof(struct snd_seq_event_cell) * pool->size);
+- if (!pool->ptr)
++ cellptr = vmalloc(sizeof(struct snd_seq_event_cell) * pool->size);
++ if (!cellptr)
+ return -ENOMEM;
+
+ /* add new cells to the free cell list */
+ spin_lock_irqsave(&pool->lock, flags);
++ if (pool->ptr) {
++ spin_unlock_irqrestore(&pool->lock, flags);
++ vfree(cellptr);
++ return 0;
++ }
++
++ pool->ptr = cellptr;
+ pool->free = NULL;
+
+ for (cell = 0; cell < pool->size; cell++) {
+diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c
+index 921fb2bd8fad..fe686ee41c6d 100644
+--- a/sound/core/seq/seq_ports.c
++++ b/sound/core/seq/seq_ports.c
+@@ -535,19 +535,22 @@ static void delete_and_unsubscribe_port(struct snd_seq_client *client,
+ bool is_src, bool ack)
+ {
+ struct snd_seq_port_subs_info *grp;
++ struct list_head *list;
++ bool empty;
+
+ grp = is_src ? &port->c_src : &port->c_dest;
++ list = is_src ? &subs->src_list : &subs->dest_list;
+ down_write(&grp->list_mutex);
+ write_lock_irq(&grp->list_lock);
+- if (is_src)
+- list_del(&subs->src_list);
+- else
+- list_del(&subs->dest_list);
++ empty = list_empty(list);
++ if (!empty)
++ list_del_init(list);
+ grp->exclusive = 0;
+ write_unlock_irq(&grp->list_lock);
+ up_write(&grp->list_mutex);
+
+- unsubscribe_port(client, port, grp, &subs->info, ack);
++ if (!empty)
++ unsubscribe_port(client, port, grp, &subs->info, ack);
+ }
+
+ /* connect two ports */
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index 00e8c5f4de17..bf48e71f73cd 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -422,7 +422,7 @@ static void snd_timer_notify1(struct snd_timer_instance *ti, int event)
+ spin_lock_irqsave(&timer->lock, flags);
+ list_for_each_entry(ts, &ti->slave_active_head, active_list)
+ if (ts->ccallback)
+- ts->ccallback(ti, event + 100, &tstamp, resolution);
++ ts->ccallback(ts, event + 100, &tstamp, resolution);
+ spin_unlock_irqrestore(&timer->lock, flags);
+ }
+
+@@ -518,9 +518,13 @@ static int _snd_timer_stop(struct snd_timer_instance *timeri, int event)
+ spin_unlock_irqrestore(&slave_active_lock, flags);
+ return -EBUSY;
+ }
++ if (timeri->timer)
++ spin_lock(&timeri->timer->lock);
+ timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+ list_del_init(&timeri->ack_list);
+ list_del_init(&timeri->active_list);
++ if (timeri->timer)
++ spin_unlock(&timeri->timer->lock);
+ spin_unlock_irqrestore(&slave_active_lock, flags);
+ goto __end;
+ }
+@@ -1920,6 +1924,7 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
+ {
+ struct snd_timer_user *tu;
+ long result = 0, unit;
++ int qhead;
+ int err = 0;
+
+ tu = file->private_data;
+@@ -1931,7 +1936,7 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
+
+ if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) {
+ err = -EAGAIN;
+- break;
++ goto _error;
+ }
+
+ set_current_state(TASK_INTERRUPTIBLE);
+@@ -1946,42 +1951,37 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
+
+ if (tu->disconnected) {
+ err = -ENODEV;
+- break;
++ goto _error;
+ }
+ if (signal_pending(current)) {
+ err = -ERESTARTSYS;
+- break;
++ goto _error;
+ }
+ }
+
++ qhead = tu->qhead++;
++ tu->qhead %= tu->queue_size;
+ spin_unlock_irq(&tu->qlock);
+- if (err < 0)
+- goto _error;
+
+ if (tu->tread) {
+- if (copy_to_user(buffer, &tu->tqueue[tu->qhead++],
+- sizeof(struct snd_timer_tread))) {
++ if (copy_to_user(buffer, &tu->tqueue[qhead],
++ sizeof(struct snd_timer_tread)))
+ err = -EFAULT;
+- goto _error;
+- }
+ } else {
+- if (copy_to_user(buffer, &tu->queue[tu->qhead++],
+- sizeof(struct snd_timer_read))) {
++ if (copy_to_user(buffer, &tu->queue[qhead],
++ sizeof(struct snd_timer_read)))
+ err = -EFAULT;
+- goto _error;
+- }
+ }
+
+- tu->qhead %= tu->queue_size;
+-
+- result += unit;
+- buffer += unit;
+-
+ spin_lock_irq(&tu->qlock);
+ tu->qused--;
++ if (err < 0)
++ goto _error;
++ result += unit;
++ buffer += unit;
+ }
+- spin_unlock_irq(&tu->qlock);
+ _error:
++ spin_unlock_irq(&tu->qlock);
+ return result > 0 ? result : err;
+ }
+
+diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
+index 96592d5ba7bf..c5d5217a4180 100644
+--- a/sound/drivers/dummy.c
++++ b/sound/drivers/dummy.c
+@@ -87,7 +87,7 @@ MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver.");
+ module_param(fake_buffer, bool, 0444);
+ MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations.");
+ #ifdef CONFIG_HIGH_RES_TIMERS
+-module_param(hrtimer, bool, 0444);
++module_param(hrtimer, bool, 0644);
+ MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source.");
+ #endif
+
+@@ -109,6 +109,9 @@ struct dummy_timer_ops {
+ snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *);
+ };
+
++#define get_dummy_ops(substream) \
++ (*(const struct dummy_timer_ops **)(substream)->runtime->private_data)
++
+ struct dummy_model {
+ const char *name;
+ int (*playback_constraints)(struct snd_pcm_runtime *runtime);
+@@ -137,7 +140,6 @@ struct snd_dummy {
+ int iobox;
+ struct snd_kcontrol *cd_volume_ctl;
+ struct snd_kcontrol *cd_switch_ctl;
+- const struct dummy_timer_ops *timer_ops;
+ };
+
+ /*
+@@ -231,6 +233,8 @@ struct dummy_model *dummy_models[] = {
+ */
+
+ struct dummy_systimer_pcm {
++ /* ops must be the first item */
++ const struct dummy_timer_ops *timer_ops;
+ spinlock_t lock;
+ struct timer_list timer;
+ unsigned long base_time;
+@@ -366,6 +370,8 @@ static struct dummy_timer_ops dummy_systimer_ops = {
+ */
+
+ struct dummy_hrtimer_pcm {
++ /* ops must be the first item */
++ const struct dummy_timer_ops *timer_ops;
+ ktime_t base_time;
+ ktime_t period_time;
+ atomic_t running;
+@@ -492,31 +498,25 @@ static struct dummy_timer_ops dummy_hrtimer_ops = {
+
+ static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+ {
+- struct snd_dummy *dummy = snd_pcm_substream_chip(substream);
+-
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+- return dummy->timer_ops->start(substream);
++ return get_dummy_ops(substream)->start(substream);
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+- return dummy->timer_ops->stop(substream);
++ return get_dummy_ops(substream)->stop(substream);
+ }
+ return -EINVAL;
+ }
+
+ static int dummy_pcm_prepare(struct snd_pcm_substream *substream)
+ {
+- struct snd_dummy *dummy = snd_pcm_substream_chip(substream);
+-
+- return dummy->timer_ops->prepare(substream);
++ return get_dummy_ops(substream)->prepare(substream);
+ }
+
+ static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream)
+ {
+- struct snd_dummy *dummy = snd_pcm_substream_chip(substream);
+-
+- return dummy->timer_ops->pointer(substream);
++ return get_dummy_ops(substream)->pointer(substream);
+ }
+
+ static struct snd_pcm_hardware dummy_pcm_hardware = {
+@@ -562,17 +562,19 @@ static int dummy_pcm_open(struct snd_pcm_substream *substream)
+ struct snd_dummy *dummy = snd_pcm_substream_chip(substream);
+ struct dummy_model *model = dummy->model;
+ struct snd_pcm_runtime *runtime = substream->runtime;
++ const struct dummy_timer_ops *ops;
+ int err;
+
+- dummy->timer_ops = &dummy_systimer_ops;
++ ops = &dummy_systimer_ops;
+ #ifdef CONFIG_HIGH_RES_TIMERS
+ if (hrtimer)
+- dummy->timer_ops = &dummy_hrtimer_ops;
++ ops = &dummy_hrtimer_ops;
+ #endif
+
+- err = dummy->timer_ops->create(substream);
++ err = ops->create(substream);
+ if (err < 0)
+ return err;
++ get_dummy_ops(substream) = ops;
+
+ runtime->hw = dummy->pcm_hw;
+ if (substream->pcm->device & 1) {
+@@ -594,7 +596,7 @@ static int dummy_pcm_open(struct snd_pcm_substream *substream)
+ err = model->capture_constraints(substream->runtime);
+ }
+ if (err < 0) {
+- dummy->timer_ops->free(substream);
++ get_dummy_ops(substream)->free(substream);
+ return err;
+ }
+ return 0;
+@@ -602,8 +604,7 @@ static int dummy_pcm_open(struct snd_pcm_substream *substream)
+
+ static int dummy_pcm_close(struct snd_pcm_substream *substream)
+ {
+- struct snd_dummy *dummy = snd_pcm_substream_chip(substream);
+- dummy->timer_ops->free(substream);
++ get_dummy_ops(substream)->free(substream);
+ return 0;
+ }
+
+diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
+index 5bc7f2e2715c..194627c6c42b 100644
+--- a/sound/pci/hda/hda_generic.c
++++ b/sound/pci/hda/hda_generic.c
+@@ -3998,9 +3998,9 @@ static void pin_power_callback(struct hda_codec *codec,
+ struct hda_jack_callback *jack,
+ bool on)
+ {
+- if (jack && jack->tbl->nid)
++ if (jack && jack->nid)
+ sync_power_state_change(codec,
+- set_pin_power_jack(codec, jack->tbl->nid, on));
++ set_pin_power_jack(codec, jack->nid, on));
+ }
+
+ /* callback only doing power up -- called at first */
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index 09920ba55ba1..69093ce34231 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -1976,10 +1976,10 @@ static void azx_remove(struct pci_dev *pci)
+ struct hda_intel *hda;
+
+ if (card) {
+- /* flush the pending probing work */
++ /* cancel the pending probing work */
+ chip = card->private_data;
+ hda = container_of(chip, struct hda_intel, chip);
+- flush_work(&hda->probe_work);
++ cancel_work_sync(&hda->probe_work);
+
+ snd_card_free(card);
+ }
+diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
+index d7cfe7b8c32b..52cc36758dd4 100644
+--- a/sound/pci/hda/hda_jack.c
++++ b/sound/pci/hda/hda_jack.c
+@@ -259,7 +259,7 @@ snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
+ if (!callback)
+ return ERR_PTR(-ENOMEM);
+ callback->func = func;
+- callback->tbl = jack;
++ callback->nid = jack->nid;
+ callback->next = jack->callback;
+ jack->callback = callback;
+ }
+diff --git a/sound/pci/hda/hda_jack.h b/sound/pci/hda/hda_jack.h
+index b279e327a23b..a13c11c3ddbb 100644
+--- a/sound/pci/hda/hda_jack.h
++++ b/sound/pci/hda/hda_jack.h
+@@ -21,7 +21,7 @@ struct hda_jack_callback;
+ typedef void (*hda_jack_callback_fn) (struct hda_codec *, struct hda_jack_callback *);
+
+ struct hda_jack_callback {
+- struct hda_jack_tbl *tbl;
++ hda_nid_t nid;
+ hda_jack_callback_fn func;
+ unsigned int private_data; /* arbitrary data */
+ struct hda_jack_callback *next;
+diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
+index 4a4e7b282e4f..0374bd5b61c8 100644
+--- a/sound/pci/hda/patch_ca0132.c
++++ b/sound/pci/hda/patch_ca0132.c
+@@ -4401,13 +4401,16 @@ static void ca0132_process_dsp_response(struct hda_codec *codec,
+ static void hp_callback(struct hda_codec *codec, struct hda_jack_callback *cb)
+ {
+ struct ca0132_spec *spec = codec->spec;
++ struct hda_jack_tbl *tbl;
+
+ /* Delay enabling the HP amp, to let the mic-detection
+ * state machine run.
+ */
+ cancel_delayed_work_sync(&spec->unsol_hp_work);
+ schedule_delayed_work(&spec->unsol_hp_work, msecs_to_jiffies(500));
+- cb->tbl->block_report = 1;
++ tbl = snd_hda_jack_tbl_get(codec, cb->nid);
++ if (tbl)
++ tbl->block_report = 1;
+ }
+
+ static void amic_callback(struct hda_codec *codec, struct hda_jack_callback *cb)
+diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
+index d02eccd51f6e..51d519554744 100644
+--- a/sound/pci/hda/patch_hdmi.c
++++ b/sound/pci/hda/patch_hdmi.c
+@@ -433,7 +433,8 @@ static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
+ eld = &per_pin->sink_eld;
+
+ mutex_lock(&per_pin->lock);
+- if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data)) {
++ if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data) ||
++ eld->eld_size > ELD_MAX_SIZE) {
+ mutex_unlock(&per_pin->lock);
+ snd_BUG();
+ return -EINVAL;
+@@ -1178,7 +1179,7 @@ static void check_presence_and_report(struct hda_codec *codec, hda_nid_t nid)
+ static void jack_callback(struct hda_codec *codec,
+ struct hda_jack_callback *jack)
+ {
+- check_presence_and_report(codec, jack->tbl->nid);
++ check_presence_and_report(codec, jack->nid);
+ }
+
+ static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 8189f02f8446..df34c78a6ced 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -277,7 +277,7 @@ static void alc_update_knob_master(struct hda_codec *codec,
+ uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
+ if (!uctl)
+ return;
+- val = snd_hda_codec_read(codec, jack->tbl->nid, 0,
++ val = snd_hda_codec_read(codec, jack->nid, 0,
+ AC_VERB_GET_VOLUME_KNOB_CONTROL, 0);
+ val &= HDA_AMP_VOLMASK;
+ uctl->value.integer.value[0] = val;
+@@ -1792,7 +1792,6 @@ enum {
+ ALC882_FIXUP_NO_PRIMARY_HP,
+ ALC887_FIXUP_ASUS_BASS,
+ ALC887_FIXUP_BASS_CHMAP,
+- ALC882_FIXUP_DISABLE_AAMIX,
+ };
+
+ static void alc889_fixup_coef(struct hda_codec *codec,
+@@ -1954,8 +1953,6 @@ static void alc882_fixup_no_primary_hp(struct hda_codec *codec,
+
+ static void alc_fixup_bass_chmap(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action);
+-static void alc_fixup_disable_aamix(struct hda_codec *codec,
+- const struct hda_fixup *fix, int action);
+
+ static const struct hda_fixup alc882_fixups[] = {
+ [ALC882_FIXUP_ABIT_AW9D_MAX] = {
+@@ -2193,10 +2190,6 @@ static const struct hda_fixup alc882_fixups[] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_bass_chmap,
+ },
+- [ALC882_FIXUP_DISABLE_AAMIX] = {
+- .type = HDA_FIXUP_FUNC,
+- .v.func = alc_fixup_disable_aamix,
+- },
+ };
+
+ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+@@ -2235,6 +2228,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x104d, 0x9047, "Sony Vaio TT", ALC889_FIXUP_VAIO_TT),
+ SND_PCI_QUIRK(0x104d, 0x905a, "Sony Vaio Z", ALC882_FIXUP_NO_PRIMARY_HP),
+ SND_PCI_QUIRK(0x104d, 0x9043, "Sony Vaio VGC-LN51JGB", ALC882_FIXUP_NO_PRIMARY_HP),
++ SND_PCI_QUIRK(0x104d, 0x9044, "Sony VAIO AiO", ALC882_FIXUP_NO_PRIMARY_HP),
+
+ /* All Apple entries are in codec SSIDs */
+ SND_PCI_QUIRK(0x106b, 0x00a0, "MacBookPro 3,1", ALC889_FIXUP_MBP_VREF),
+@@ -2264,7 +2258,6 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
+ SND_PCI_QUIRK_VENDOR(0x1462, "MSI", ALC882_FIXUP_GPIO3),
+ SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte EP45-DS3/Z87X-UD3H", ALC889_FIXUP_FRONT_HP_NO_PRESENCE),
+- SND_PCI_QUIRK(0x1458, 0xa182, "Gigabyte Z170X-UD3", ALC882_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x147b, 0x107a, "Abit AW9D-MAX", ALC882_FIXUP_ABIT_AW9D_MAX),
+ SND_PCI_QUIRK_VENDOR(0x1558, "Clevo laptop", ALC882_FIXUP_EAPD),
+ SND_PCI_QUIRK(0x161f, 0x2054, "Medion laptop", ALC883_FIXUP_EAPD),
+diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
+index 8e7d4c087a7a..840178a26a6b 100644
+--- a/sound/pci/hda/patch_sigmatel.c
++++ b/sound/pci/hda/patch_sigmatel.c
+@@ -493,9 +493,9 @@ static void jack_update_power(struct hda_codec *codec,
+ if (!spec->num_pwrs)
+ return;
+
+- if (jack && jack->tbl->nid) {
+- stac_toggle_power_map(codec, jack->tbl->nid,
+- snd_hda_jack_detect(codec, jack->tbl->nid),
++ if (jack && jack->nid) {
++ stac_toggle_power_map(codec, jack->nid,
++ snd_hda_jack_detect(codec, jack->nid),
+ true);
+ return;
+ }
+diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
+index 2ee44abd56a6..6cbd03a5e53d 100644
+--- a/sound/soc/codecs/rt5645.c
++++ b/sound/soc/codecs/rt5645.c
+@@ -487,7 +487,7 @@ static const struct snd_kcontrol_new rt5645_snd_controls[] = {
+
+ /* IN1/IN2 Control */
+ SOC_SINGLE_TLV("IN1 Boost", RT5645_IN1_CTRL1,
+- RT5645_BST_SFT1, 8, 0, bst_tlv),
++ RT5645_BST_SFT1, 12, 0, bst_tlv),
+ SOC_SINGLE_TLV("IN2 Boost", RT5645_IN2_CTRL,
+ RT5645_BST_SFT2, 8, 0, bst_tlv),
+
+diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
+index 35fe58f4fa86..52fe7eb2dea1 100644
+--- a/sound/soc/soc-pcm.c
++++ b/sound/soc/soc-pcm.c
+@@ -1661,7 +1661,8 @@ int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
+ (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
+ (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
+ (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
+- (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
++ (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
++ (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
+ continue;
+
+ dev_dbg(be->dev, "ASoC: hw_free BE %s\n",
+diff --git a/sound/usb/midi.c b/sound/usb/midi.c
+index bec63e0d2605..f059326a4914 100644
+--- a/sound/usb/midi.c
++++ b/sound/usb/midi.c
+@@ -2451,7 +2451,6 @@ int snd_usbmidi_create(struct snd_card *card,
+ else
+ err = snd_usbmidi_create_endpoints(umidi, endpoints);
+ if (err < 0) {
+- snd_usbmidi_free(umidi);
+ return err;
+ }
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-02-16 15:28 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-02-16 15:28 UTC (permalink / raw
To: gentoo-commits
commit: 85527ab7ede917abc023e0e77dabb8500b8b3cf1
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Feb 16 15:28:51 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Feb 16 15:28:51 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=85527ab7
Linux patch 4.1.18
0000_README | 4 +
1017_linux-4.1.18.patch | 11807 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 11811 insertions(+)
diff --git a/0000_README b/0000_README
index 8b9fa0f..ed66531 100644
--- a/0000_README
+++ b/0000_README
@@ -111,6 +111,10 @@ Patch: 1016_linux-4.1.17.patch
From: http://www.kernel.org
Desc: Linux 4.1.17
+Patch: 1017_linux-4.1.18.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.18
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1017_linux-4.1.18.patch b/1017_linux-4.1.18.patch
new file mode 100644
index 0000000..ef682b7
--- /dev/null
+++ b/1017_linux-4.1.18.patch
@@ -0,0 +1,11807 @@
+diff --git a/Makefile b/Makefile
+index d398dd440bc9..001375cfd815 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 17
++SUBLEVEL = 18
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
+index 0c12ffb155a2..f775d7161ffb 100644
+--- a/arch/arm/Kconfig.debug
++++ b/arch/arm/Kconfig.debug
+@@ -161,10 +161,9 @@ choice
+ mobile SoCs in the Kona family of chips (e.g. bcm28155,
+ bcm11351, etc...)
+
+- config DEBUG_BCM63XX
++ config DEBUG_BCM63XX_UART
+ bool "Kernel low-level debugging on BCM63XX UART"
+ depends on ARCH_BCM_63XX
+- select DEBUG_UART_BCM63XX
+
+ config DEBUG_BERLIN_UART
+ bool "Marvell Berlin SoC Debug UART"
+@@ -1304,7 +1303,7 @@ config DEBUG_LL_INCLUDE
+ default "debug/vf.S" if DEBUG_VF_UART
+ default "debug/vt8500.S" if DEBUG_VT8500_UART0
+ default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
+- default "debug/bcm63xx.S" if DEBUG_UART_BCM63XX
++ default "debug/bcm63xx.S" if DEBUG_BCM63XX_UART
+ default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0
+ default "mach/debug-macro.S"
+
+@@ -1320,10 +1319,6 @@ config DEBUG_UART_8250
+ ARCH_IOP33X || ARCH_IXP4XX || \
+ ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
+
+-# Compatibility options for BCM63xx
+-config DEBUG_UART_BCM63XX
+- def_bool ARCH_BCM_63XX
+-
+ config DEBUG_UART_PHYS
+ hex "Physical base address of debug UART"
+ default 0x00100a00 if DEBUG_NETX_UART
+@@ -1415,7 +1410,7 @@ config DEBUG_UART_PHYS
+ default 0xfffb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1
+ default 0xfffb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2
+ default 0xfffb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3
+- default 0xfffe8600 if DEBUG_UART_BCM63XX
++ default 0xfffe8600 if DEBUG_BCM63XX_UART
+ default 0xfffff700 if ARCH_IOP33X
+ depends on ARCH_EP93XX || \
+ DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
+@@ -1427,7 +1422,7 @@ config DEBUG_UART_PHYS
+ DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \
+ DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
+ DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \
+- DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || \
++ DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
+ DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0
+
+ config DEBUG_UART_VIRT
+@@ -1466,7 +1461,7 @@ config DEBUG_UART_VIRT
+ default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
+ default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
+ default 0xfc40ab00 if DEBUG_BRCMSTB_UART
+- default 0xfcfe8600 if DEBUG_UART_BCM63XX
++ default 0xfcfe8600 if DEBUG_BCM63XX_UART
+ default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
+ default 0xfd000000 if ARCH_SPEAR13XX
+ default 0xfd012000 if ARCH_MV78XX0
+@@ -1516,7 +1511,7 @@ config DEBUG_UART_VIRT
+ DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
+ DEBUG_NETX_UART || \
+ DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
+- DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || \
++ DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
+ DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0
+
+ config DEBUG_UART_8250_SHIFT
+diff --git a/arch/arm/boot/dts/armada-388-gp.dts b/arch/arm/boot/dts/armada-388-gp.dts
+index 78514ab0b47a..757ac079e7f2 100644
+--- a/arch/arm/boot/dts/armada-388-gp.dts
++++ b/arch/arm/boot/dts/armada-388-gp.dts
+@@ -288,16 +288,6 @@
+ gpio = <&expander0 4 GPIO_ACTIVE_HIGH>;
+ };
+
+- reg_usb2_1_vbus: v5-vbus1 {
+- compatible = "regulator-fixed";
+- regulator-name = "v5.0-vbus1";
+- regulator-min-microvolt = <5000000>;
+- regulator-max-microvolt = <5000000>;
+- enable-active-high;
+- regulator-always-on;
+- gpio = <&expander0 4 GPIO_ACTIVE_HIGH>;
+- };
+-
+ reg_sata0: pwr-sata0 {
+ compatible = "regulator-fixed";
+ regulator-name = "pwr_en_sata0";
+diff --git a/arch/arm/boot/dts/at91-sama5d4_xplained.dts b/arch/arm/boot/dts/at91-sama5d4_xplained.dts
+index c740e1a2a3a5..4f29968076ce 100644
+--- a/arch/arm/boot/dts/at91-sama5d4_xplained.dts
++++ b/arch/arm/boot/dts/at91-sama5d4_xplained.dts
+@@ -98,7 +98,7 @@
+
+ phy0: ethernet-phy@1 {
+ interrupt-parent = <&pioE>;
+- interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
++ interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
+ reg = <1>;
+ };
+ };
+diff --git a/arch/arm/boot/dts/at91-sama5d4ek.dts b/arch/arm/boot/dts/at91-sama5d4ek.dts
+index 45e7761b7a29..d4d24a081404 100644
+--- a/arch/arm/boot/dts/at91-sama5d4ek.dts
++++ b/arch/arm/boot/dts/at91-sama5d4ek.dts
+@@ -141,8 +141,15 @@
+ };
+
+ macb0: ethernet@f8020000 {
++ pinctrl-0 = <&pinctrl_macb0_rmii &pinctrl_macb0_phy_irq>;
+ phy-mode = "rmii";
+ status = "okay";
++
++ ethernet-phy@1 {
++ reg = <0x1>;
++ interrupt-parent = <&pioE>;
++ interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
++ };
+ };
+
+ mmc1: mmc@fc000000 {
+@@ -174,6 +181,10 @@
+
+ pinctrl@fc06a000 {
+ board {
++ pinctrl_macb0_phy_irq: macb0_phy_irq {
++ atmel,pins =
++ <AT91_PIOE 1 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
++ };
+ pinctrl_mmc0_cd: mmc0_cd {
+ atmel,pins =
+ <AT91_PIOE 5 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
+diff --git a/arch/arm/boot/dts/sama5d4.dtsi b/arch/arm/boot/dts/sama5d4.dtsi
+index 9cf0ab62db7d..cf11660f35a1 100644
+--- a/arch/arm/boot/dts/sama5d4.dtsi
++++ b/arch/arm/boot/dts/sama5d4.dtsi
+@@ -1219,7 +1219,7 @@
+ dbgu: serial@fc069000 {
+ compatible = "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+ reg = <0xfc069000 0x200>;
+- interrupts = <2 IRQ_TYPE_LEVEL_HIGH 7>;
++ interrupts = <45 IRQ_TYPE_LEVEL_HIGH 7>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_dbgu>;
+ clocks = <&dbgu_clk>;
+diff --git a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
+index f182f6538e90..89ed9b45d533 100644
+--- a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
++++ b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
+@@ -122,22 +122,14 @@
+ };
+ mmcsd_default_mode: mmcsd_default {
+ mmcsd_default_cfg1 {
+- /* MCCLK */
+- pins = "GPIO8_B10";
+- ste,output = <0>;
+- };
+- mmcsd_default_cfg2 {
+- /* MCCMDDIR, MCDAT0DIR, MCDAT31DIR, MCDATDIR2 */
+- pins = "GPIO10_C11", "GPIO15_A12",
+- "GPIO16_C13", "GPIO23_D15";
+- ste,output = <1>;
+- };
+- mmcsd_default_cfg3 {
+- /* MCCMD, MCDAT3-0, MCMSFBCLK */
+- pins = "GPIO9_A10", "GPIO11_B11",
+- "GPIO12_A11", "GPIO13_C12",
+- "GPIO14_B12", "GPIO24_C15";
+- ste,input = <1>;
++ /*
++ * MCCLK, MCCMDDIR, MCDAT0DIR, MCDAT31DIR, MCDATDIR2
++ * MCCMD, MCDAT3-0, MCMSFBCLK
++ */
++ pins = "GPIO8_B10", "GPIO9_A10", "GPIO10_C11", "GPIO11_B11",
++ "GPIO12_A11", "GPIO13_C12", "GPIO14_B12", "GPIO15_A12",
++ "GPIO16_C13", "GPIO23_D15", "GPIO24_C15";
++ ste,output = <2>;
+ };
+ };
+ };
+@@ -802,10 +794,21 @@
+ clock-names = "mclk", "apb_pclk";
+ interrupt-parent = <&vica>;
+ interrupts = <22>;
+- max-frequency = <48000000>;
++ max-frequency = <400000>;
+ bus-width = <4>;
+ cap-mmc-highspeed;
+ cap-sd-highspeed;
++ full-pwr-cycle;
++ /*
++ * The STw4811 circuit used with the Nomadik strictly
++ * requires that all of these signal direction pins be
++ * routed and used for its 4-bit levelshifter.
++ */
++ st,sig-dir-dat0;
++ st,sig-dir-dat2;
++ st,sig-dir-dat31;
++ st,sig-dir-cmd;
++ st,sig-pin-fbclk;
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmcsd_default_mux>, <&mmcsd_default_mode>;
+ vmmc-supply = <&vmmc_regulator>;
+diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
+index eafd120b53f1..8e2a7acb823b 100644
+--- a/arch/arm/mach-omap2/sleep34xx.S
++++ b/arch/arm/mach-omap2/sleep34xx.S
+@@ -86,13 +86,18 @@ ENTRY(enable_omap3630_toggle_l2_on_restore)
+ stmfd sp!, {lr} @ save registers on stack
+ /* Setup so that we will disable and enable l2 */
+ mov r1, #0x1
+- adrl r2, l2dis_3630 @ may be too distant for plain adr
+- str r1, [r2]
++ adrl r3, l2dis_3630_offset @ may be too distant for plain adr
++ ldr r2, [r3] @ value for offset
++ str r1, [r2, r3] @ write to l2dis_3630
+ ldmfd sp!, {pc} @ restore regs and return
+ ENDPROC(enable_omap3630_toggle_l2_on_restore)
+
+- .text
+-/* Function to call rom code to save secure ram context */
++/*
++ * Function to call rom code to save secure ram context. This gets
++ * relocated to SRAM, so it can be all in .data section. Otherwise
++ * we need to initialize api_params separately.
++ */
++ .data
+ .align 3
+ ENTRY(save_secure_ram_context)
+ stmfd sp!, {r4 - r11, lr} @ save registers on stack
+@@ -126,6 +131,8 @@ ENDPROC(save_secure_ram_context)
+ ENTRY(save_secure_ram_context_sz)
+ .word . - save_secure_ram_context
+
++ .text
++
+ /*
+ * ======================
+ * == Idle entry point ==
+@@ -289,12 +296,6 @@ wait_sdrc_ready:
+ bic r5, r5, #0x40
+ str r5, [r4]
+
+-/*
+- * PC-relative stores lead to undefined behaviour in Thumb-2: use a r7 as a
+- * base instead.
+- * Be careful not to clobber r7 when maintaing this code.
+- */
+-
+ is_dll_in_lock_mode:
+ /* Is dll in lock mode? */
+ ldr r4, sdrc_dlla_ctrl
+@@ -302,11 +303,7 @@ is_dll_in_lock_mode:
+ tst r5, #0x4
+ bne exit_nonoff_modes @ Return if locked
+ /* wait till dll locks */
+- adr r7, kick_counter
+ wait_dll_lock_timed:
+- ldr r4, wait_dll_lock_counter
+- add r4, r4, #1
+- str r4, [r7, #wait_dll_lock_counter - kick_counter]
+ ldr r4, sdrc_dlla_status
+ /* Wait 20uS for lock */
+ mov r6, #8
+@@ -330,9 +327,6 @@ kick_dll:
+ orr r6, r6, #(1<<3) @ enable dll
+ str r6, [r4]
+ dsb
+- ldr r4, kick_counter
+- add r4, r4, #1
+- str r4, [r7] @ kick_counter
+ b wait_dll_lock_timed
+
+ exit_nonoff_modes:
+@@ -360,15 +354,6 @@ sdrc_dlla_status:
+ .word SDRC_DLLA_STATUS_V
+ sdrc_dlla_ctrl:
+ .word SDRC_DLLA_CTRL_V
+- /*
+- * When exporting to userspace while the counters are in SRAM,
+- * these 2 words need to be at the end to facilitate retrival!
+- */
+-kick_counter:
+- .word 0
+-wait_dll_lock_counter:
+- .word 0
+-
+ ENTRY(omap3_do_wfi_sz)
+ .word . - omap3_do_wfi
+
+@@ -437,7 +422,9 @@ ENTRY(omap3_restore)
+ cmp r2, #0x0 @ Check if target power state was OFF or RET
+ bne logic_l1_restore
+
+- ldr r0, l2dis_3630
++ adr r1, l2dis_3630_offset @ address for offset
++ ldr r0, [r1] @ value for offset
++ ldr r0, [r1, r0] @ value at l2dis_3630
+ cmp r0, #0x1 @ should we disable L2 on 3630?
+ bne skipl2dis
+ mrc p15, 0, r0, c1, c0, 1
+@@ -506,7 +493,9 @@ l2_inv_gp:
+ mov r12, #0x2
+ smc #0 @ Call SMI monitor (smieq)
+ logic_l1_restore:
+- ldr r1, l2dis_3630
++ adr r0, l2dis_3630_offset @ adress for offset
++ ldr r1, [r0] @ value for offset
++ ldr r1, [r0, r1] @ value at l2dis_3630
+ cmp r1, #0x1 @ Test if L2 re-enable needed on 3630
+ bne skipl2reen
+ mrc p15, 0, r1, c1, c0, 1
+@@ -535,6 +524,10 @@ control_stat:
+ .word CONTROL_STAT
+ control_mem_rta:
+ .word CONTROL_MEM_RTA_CTRL
++l2dis_3630_offset:
++ .long l2dis_3630 - .
++
++ .data
+ l2dis_3630:
+ .word 0
+
+diff --git a/arch/arm/mach-omap2/sleep44xx.S b/arch/arm/mach-omap2/sleep44xx.S
+index ad1bb9431e94..5373a3281779 100644
+--- a/arch/arm/mach-omap2/sleep44xx.S
++++ b/arch/arm/mach-omap2/sleep44xx.S
+@@ -29,12 +29,6 @@
+ dsb
+ .endm
+
+-ppa_zero_params:
+- .word 0x0
+-
+-ppa_por_params:
+- .word 1, 0
+-
+ #ifdef CONFIG_ARCH_OMAP4
+
+ /*
+@@ -266,7 +260,9 @@ ENTRY(omap4_cpu_resume)
+ beq skip_ns_smp_enable
+ ppa_actrl_retry:
+ mov r0, #OMAP4_PPA_CPU_ACTRL_SMP_INDEX
+- adr r3, ppa_zero_params @ Pointer to parameters
++ adr r1, ppa_zero_params_offset
++ ldr r3, [r1]
++ add r3, r3, r1 @ Pointer to ppa_zero_params
+ mov r1, #0x0 @ Process ID
+ mov r2, #0x4 @ Flag
+ mov r6, #0xff
+@@ -303,7 +299,9 @@ skip_ns_smp_enable:
+ ldr r0, =OMAP4_PPA_L2_POR_INDEX
+ ldr r1, =OMAP44XX_SAR_RAM_BASE
+ ldr r4, [r1, #L2X0_PREFETCH_CTRL_OFFSET]
+- adr r3, ppa_por_params
++ adr r1, ppa_por_params_offset
++ ldr r3, [r1]
++ add r3, r3, r1 @ Pointer to ppa_por_params
+ str r4, [r3, #0x04]
+ mov r1, #0x0 @ Process ID
+ mov r2, #0x4 @ Flag
+@@ -328,6 +326,8 @@ skip_l2en:
+ #endif
+
+ b cpu_resume @ Jump to generic resume
++ppa_por_params_offset:
++ .long ppa_por_params - .
+ ENDPROC(omap4_cpu_resume)
+ #endif /* CONFIG_ARCH_OMAP4 */
+
+@@ -382,4 +382,13 @@ ENTRY(omap_do_wfi)
+ nop
+
+ ldmfd sp!, {pc}
++ppa_zero_params_offset:
++ .long ppa_zero_params - .
+ ENDPROC(omap_do_wfi)
++
++ .data
++ppa_zero_params:
++ .word 0
++
++ppa_por_params:
++ .word 1, 0
+diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
+index 36aa31ff2c06..cc7435c9676e 100644
+--- a/arch/arm64/kernel/head.S
++++ b/arch/arm64/kernel/head.S
+@@ -566,9 +566,14 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems
+ #endif
+
+ /* EL2 debug */
++ mrs x0, id_aa64dfr0_el1 // Check ID_AA64DFR0_EL1 PMUVer
++ sbfx x0, x0, #8, #4
++ cmp x0, #1
++ b.lt 4f // Skip if no PMU present
+ mrs x0, pmcr_el0 // Disable debug access traps
+ ubfx x0, x0, #11, #5 // to EL2 and allow access to
+ msr mdcr_el2, x0 // all PMU counters from EL1
++4:
+
+ /* Stage-2 translation */
+ msr vttbr_el2, xzr
+diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
+index 7778453762d8..b67b01cb5109 100644
+--- a/arch/arm64/kernel/perf_event.c
++++ b/arch/arm64/kernel/perf_event.c
+@@ -1242,9 +1242,6 @@ static void armv8pmu_reset(void *info)
+
+ /* Initialize & Reset PMNC: C and P bits. */
+ armv8pmu_pmcr_write(ARMV8_PMCR_P | ARMV8_PMCR_C);
+-
+- /* Disable access from userspace. */
+- asm volatile("msr pmuserenr_el0, %0" :: "r" (0));
+ }
+
+ static int armv8_pmuv3_map_event(struct perf_event *event)
+diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c
+index e47ed1c5dce1..545710f854f8 100644
+--- a/arch/arm64/mm/pageattr.c
++++ b/arch/arm64/mm/pageattr.c
+@@ -57,6 +57,9 @@ static int change_memory_common(unsigned long addr, int numpages,
+ if (end < MODULES_VADDR || end >= MODULES_END)
+ return -EINVAL;
+
++ if (!numpages)
++ return 0;
++
+ data.set_mask = set_mask;
+ data.clear_mask = clear_mask;
+
+diff --git a/arch/arm64/mm/proc-macros.S b/arch/arm64/mm/proc-macros.S
+index 4c4d93c4bf65..d69dffffaa89 100644
+--- a/arch/arm64/mm/proc-macros.S
++++ b/arch/arm64/mm/proc-macros.S
+@@ -62,3 +62,15 @@
+ bfi \valreg, \tmpreg, #TCR_T0SZ_OFFSET, #TCR_TxSZ_WIDTH
+ #endif
+ .endm
++
++/*
++ * reset_pmuserenr_el0 - reset PMUSERENR_EL0 if PMUv3 present
++ */
++ .macro reset_pmuserenr_el0, tmpreg
++ mrs \tmpreg, id_aa64dfr0_el1 // Check ID_AA64DFR0_EL1 PMUVer
++ sbfx \tmpreg, \tmpreg, #8, #4
++ cmp \tmpreg, #1 // Skip if no PMU present
++ b.lt 9000f
++ msr pmuserenr_el0, xzr // Disable PMU access from EL0
++9000:
++ .endm
+diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
+index cdd754e19b9b..d253908a988d 100644
+--- a/arch/arm64/mm/proc.S
++++ b/arch/arm64/mm/proc.S
+@@ -165,6 +165,7 @@ ENTRY(cpu_do_resume)
+ */
+ ubfx x11, x11, #1, #1
+ msr oslar_el1, x11
++ reset_pmuserenr_el0 x0 // Disable PMU access from EL0
+ mov x0, x12
+ dsb nsh // Make sure local tlb invalidation completed
+ isb
+@@ -202,7 +203,9 @@ ENTRY(__cpu_setup)
+
+ mov x0, #3 << 20
+ msr cpacr_el1, x0 // Enable FP/ASIMD
+- msr mdscr_el1, xzr // Reset mdscr_el1
++ mov x0, #1 << 12 // Reset mdscr_el1 and disable
++ msr mdscr_el1, x0 // access to the DCC from EL0
++ reset_pmuserenr_el0 x0 // Disable PMU access from EL0
+ /*
+ * Memory region attributes for LPAE:
+ *
+diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c
+index 0392112a5d70..a5ecef7188ba 100644
+--- a/arch/m32r/kernel/setup.c
++++ b/arch/m32r/kernel/setup.c
+@@ -81,7 +81,10 @@ static struct resource code_resource = {
+ };
+
+ unsigned long memory_start;
++EXPORT_SYMBOL(memory_start);
++
+ unsigned long memory_end;
++EXPORT_SYMBOL(memory_end);
+
+ void __init setup_arch(char **);
+ int get_cpuinfo(char *);
+diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
+index 70f6e7f073b0..7fe24aef7fdc 100644
+--- a/arch/mips/include/asm/pgtable.h
++++ b/arch/mips/include/asm/pgtable.h
+@@ -353,7 +353,7 @@ static inline pte_t pte_mkdirty(pte_t pte)
+ static inline pte_t pte_mkyoung(pte_t pte)
+ {
+ pte_val(pte) |= _PAGE_ACCESSED;
+-#ifdef CONFIG_CPU_MIPSR2
++#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
+ if (!(pte_val(pte) & _PAGE_NO_READ))
+ pte_val(pte) |= _PAGE_SILENT_READ;
+ else
+@@ -558,7 +558,7 @@ static inline pmd_t pmd_mkyoung(pmd_t pmd)
+ {
+ pmd_val(pmd) |= _PAGE_ACCESSED;
+
+-#ifdef CONFIG_CPU_MIPSR2
++#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
+ if (!(pmd_val(pmd) & _PAGE_NO_READ))
+ pmd_val(pmd) |= _PAGE_SILENT_READ;
+ else
+diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
+index 97c87027c17f..90b0e8316790 100644
+--- a/arch/mips/mm/tlbex.c
++++ b/arch/mips/mm/tlbex.c
+@@ -242,7 +242,7 @@ static void output_pgtable_bits_defines(void)
+ pr_define("_PAGE_HUGE_SHIFT %d\n", _PAGE_HUGE_SHIFT);
+ pr_define("_PAGE_SPLITTING_SHIFT %d\n", _PAGE_SPLITTING_SHIFT);
+ #endif
+-#ifdef CONFIG_CPU_MIPSR2
++#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
+ if (cpu_has_rixi) {
+ #ifdef _PAGE_NO_EXEC_SHIFT
+ pr_define("_PAGE_NO_EXEC_SHIFT %d\n", _PAGE_NO_EXEC_SHIFT);
+diff --git a/arch/parisc/include/uapi/asm/siginfo.h b/arch/parisc/include/uapi/asm/siginfo.h
+index d7034728f377..1c75565d984b 100644
+--- a/arch/parisc/include/uapi/asm/siginfo.h
++++ b/arch/parisc/include/uapi/asm/siginfo.h
+@@ -1,6 +1,10 @@
+ #ifndef _PARISC_SIGINFO_H
+ #define _PARISC_SIGINFO_H
+
++#if defined(__LP64__)
++#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
++#endif
++
+ #include <asm-generic/siginfo.h>
+
+ #undef NSIGTRAP
+diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
+index 35f0b62259bb..22f6d954ef89 100644
+--- a/arch/powerpc/kernel/eeh_pe.c
++++ b/arch/powerpc/kernel/eeh_pe.c
+@@ -861,32 +861,29 @@ void eeh_pe_restore_bars(struct eeh_pe *pe)
+ const char *eeh_pe_loc_get(struct eeh_pe *pe)
+ {
+ struct pci_bus *bus = eeh_pe_bus_get(pe);
+- struct device_node *dn = pci_bus_to_OF_node(bus);
++ struct device_node *dn;
+ const char *loc = NULL;
+
+- if (!dn)
+- goto out;
++ while (bus) {
++ dn = pci_bus_to_OF_node(bus);
++ if (!dn) {
++ bus = bus->parent;
++ continue;
++ }
+
+- /* PHB PE or root PE ? */
+- if (pci_is_root_bus(bus)) {
+- loc = of_get_property(dn, "ibm,loc-code", NULL);
+- if (!loc)
++ if (pci_is_root_bus(bus))
+ loc = of_get_property(dn, "ibm,io-base-loc-code", NULL);
++ else
++ loc = of_get_property(dn, "ibm,slot-location-code",
++ NULL);
++
+ if (loc)
+- goto out;
++ return loc;
+
+- /* Check the root port */
+- dn = dn->child;
+- if (!dn)
+- goto out;
++ bus = bus->parent;
+ }
+
+- loc = of_get_property(dn, "ibm,loc-code", NULL);
+- if (!loc)
+- loc = of_get_property(dn, "ibm,slot-location-code", NULL);
+-
+-out:
+- return loc ? loc : "N/A";
++ return "N/A";
+ }
+
+ /**
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index ffd98b2bfa16..f8338e6d3dd7 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -2047,7 +2047,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
+
+ /* Emulate H_SET_DABR/X on P8 for the sake of compat mode guests */
+ 2: rlwimi r5, r4, 5, DAWRX_DR | DAWRX_DW
+- rlwimi r5, r4, 1, DAWRX_WT
++ rlwimi r5, r4, 2, DAWRX_WT
+ clrrdi r4, r4, 3
+ std r4, VCPU_DAWR(r3)
+ std r5, VCPU_DAWRX(r3)
+diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
+index ac3ddf115f3d..c8fe9ab10792 100644
+--- a/arch/powerpc/kvm/powerpc.c
++++ b/arch/powerpc/kvm/powerpc.c
+@@ -915,21 +915,17 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
+ r = -ENXIO;
+ break;
+ }
+- vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
++ val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
+ break;
+ case KVM_REG_PPC_VSCR:
+ if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
+ r = -ENXIO;
+ break;
+ }
+- vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
++ val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
+ break;
+ case KVM_REG_PPC_VRSAVE:
+- if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
+- r = -ENXIO;
+- break;
+- }
+- vcpu->arch.vrsave = set_reg_val(reg->id, val);
++ val = get_reg_val(reg->id, vcpu->arch.vrsave);
+ break;
+ #endif /* CONFIG_ALTIVEC */
+ default:
+@@ -970,17 +966,21 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
+ r = -ENXIO;
+ break;
+ }
+- val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
++ vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
+ break;
+ case KVM_REG_PPC_VSCR:
+ if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
+ r = -ENXIO;
+ break;
+ }
+- val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
++ vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
+ break;
+ case KVM_REG_PPC_VRSAVE:
+- val = get_reg_val(reg->id, vcpu->arch.vrsave);
++ if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
++ r = -ENXIO;
++ break;
++ }
++ vcpu->arch.vrsave = set_reg_val(reg->id, val);
+ break;
+ #endif /* CONFIG_ALTIVEC */
+ default:
+diff --git a/arch/s390/mm/extable.c b/arch/s390/mm/extable.c
+index 4d1ee88864e8..18c8b819b0aa 100644
+--- a/arch/s390/mm/extable.c
++++ b/arch/s390/mm/extable.c
+@@ -52,12 +52,16 @@ void sort_extable(struct exception_table_entry *start,
+ int i;
+
+ /* Normalize entries to being relative to the start of the section */
+- for (p = start, i = 0; p < finish; p++, i += 8)
++ for (p = start, i = 0; p < finish; p++, i += 8) {
+ p->insn += i;
++ p->fixup += i + 4;
++ }
+ sort(start, finish - start, sizeof(*start), cmp_ex, NULL);
+ /* Denormalize all entries */
+- for (p = start, i = 0; p < finish; p++, i += 8)
++ for (p = start, i = 0; p < finish; p++, i += 8) {
+ p->insn -= i;
++ p->fixup -= i + 4;
++ }
+ }
+
+ #ifdef CONFIG_MODULES
+diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
+index 30e7ddb27a3a..c690c8e16a96 100644
+--- a/arch/sparc/kernel/sys_sparc_64.c
++++ b/arch/sparc/kernel/sys_sparc_64.c
+@@ -413,7 +413,7 @@ out:
+
+ SYSCALL_DEFINE1(sparc64_personality, unsigned long, personality)
+ {
+- int ret;
++ long ret;
+
+ if (personality(current->personality) == PER_LINUX32 &&
+ personality(personality) == PER_LINUX)
+diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
+index 47f1ff056a54..22a358ef1b0c 100644
+--- a/arch/um/os-Linux/start_up.c
++++ b/arch/um/os-Linux/start_up.c
+@@ -94,6 +94,8 @@ static int start_ptraced_child(void)
+ {
+ int pid, n, status;
+
++ fflush(stdout);
++
+ pid = fork();
+ if (pid == 0)
+ ptrace_child();
+diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
+index 78f0c8cbe316..74fcdf3f1534 100644
+--- a/arch/x86/include/asm/pgtable_types.h
++++ b/arch/x86/include/asm/pgtable_types.h
+@@ -337,20 +337,18 @@ static inline enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
+ }
+ static inline pgprot_t pgprot_4k_2_large(pgprot_t pgprot)
+ {
++ pgprotval_t val = pgprot_val(pgprot);
+ pgprot_t new;
+- unsigned long val;
+
+- val = pgprot_val(pgprot);
+ pgprot_val(new) = (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) |
+ ((val & _PAGE_PAT) << (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT));
+ return new;
+ }
+ static inline pgprot_t pgprot_large_2_4k(pgprot_t pgprot)
+ {
++ pgprotval_t val = pgprot_val(pgprot);
+ pgprot_t new;
+- unsigned long val;
+
+- val = pgprot_val(pgprot);
+ pgprot_val(new) = (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) |
+ ((val & _PAGE_PAT_LARGE) >>
+ (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT));
+diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
+index 89af288ec674..2dd9b3ad3bb5 100644
+--- a/arch/x86/mm/pageattr.c
++++ b/arch/x86/mm/pageattr.c
+@@ -33,7 +33,7 @@ struct cpa_data {
+ pgd_t *pgd;
+ pgprot_t mask_set;
+ pgprot_t mask_clr;
+- int numpages;
++ unsigned long numpages;
+ int flags;
+ unsigned long pfn;
+ unsigned force_split : 1;
+@@ -1324,7 +1324,7 @@ static int __change_page_attr_set_clr(struct cpa_data *cpa, int checkalias)
+ * CPA operation. Either a large page has been
+ * preserved or a single page update happened.
+ */
+- BUG_ON(cpa->numpages > numpages);
++ BUG_ON(cpa->numpages > numpages || !cpa->numpages);
+ numpages -= cpa->numpages;
+ if (cpa->flags & (CPA_PAGES_ARRAY | CPA_ARRAY))
+ cpa->curpage++;
+diff --git a/crypto/af_alg.c b/crypto/af_alg.c
+index f22cc56fd1b3..9641b74b53ef 100644
+--- a/crypto/af_alg.c
++++ b/crypto/af_alg.c
+@@ -76,6 +76,8 @@ int af_alg_register_type(const struct af_alg_type *type)
+ goto unlock;
+
+ type->ops->owner = THIS_MODULE;
++ if (type->ops_nokey)
++ type->ops_nokey->owner = THIS_MODULE;
+ node->type = type;
+ list_add(&node->list, &alg_types);
+ err = 0;
+@@ -125,6 +127,26 @@ int af_alg_release(struct socket *sock)
+ }
+ EXPORT_SYMBOL_GPL(af_alg_release);
+
++void af_alg_release_parent(struct sock *sk)
++{
++ struct alg_sock *ask = alg_sk(sk);
++ unsigned int nokey = ask->nokey_refcnt;
++ bool last = nokey && !ask->refcnt;
++
++ sk = ask->parent;
++ ask = alg_sk(sk);
++
++ lock_sock(sk);
++ ask->nokey_refcnt -= nokey;
++ if (!last)
++ last = !--ask->refcnt;
++ release_sock(sk);
++
++ if (last)
++ sock_put(sk);
++}
++EXPORT_SYMBOL_GPL(af_alg_release_parent);
++
+ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ {
+ struct sock *sk = sock->sk;
+@@ -132,6 +154,7 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ struct sockaddr_alg *sa = (void *)uaddr;
+ const struct af_alg_type *type;
+ void *private;
++ int err;
+
+ if (sock->state == SS_CONNECTED)
+ return -EINVAL;
+@@ -157,16 +180,22 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ return PTR_ERR(private);
+ }
+
++ err = -EBUSY;
+ lock_sock(sk);
++ if (ask->refcnt | ask->nokey_refcnt)
++ goto unlock;
+
+ swap(ask->type, type);
+ swap(ask->private, private);
+
++ err = 0;
++
++unlock:
+ release_sock(sk);
+
+ alg_do_release(type, private);
+
+- return 0;
++ return err;
+ }
+
+ static int alg_setkey(struct sock *sk, char __user *ukey,
+@@ -199,11 +228,15 @@ static int alg_setsockopt(struct socket *sock, int level, int optname,
+ struct sock *sk = sock->sk;
+ struct alg_sock *ask = alg_sk(sk);
+ const struct af_alg_type *type;
+- int err = -ENOPROTOOPT;
++ int err = -EBUSY;
+
+ lock_sock(sk);
++ if (ask->refcnt)
++ goto unlock;
++
+ type = ask->type;
+
++ err = -ENOPROTOOPT;
+ if (level != SOL_ALG || !type)
+ goto unlock;
+
+@@ -235,6 +268,7 @@ int af_alg_accept(struct sock *sk, struct socket *newsock)
+ struct alg_sock *ask = alg_sk(sk);
+ const struct af_alg_type *type;
+ struct sock *sk2;
++ unsigned int nokey;
+ int err;
+
+ lock_sock(sk);
+@@ -254,20 +288,29 @@ int af_alg_accept(struct sock *sk, struct socket *newsock)
+ security_sk_clone(sk, sk2);
+
+ err = type->accept(ask->private, sk2);
+- if (err) {
+- sk_free(sk2);
++
++ nokey = err == -ENOKEY;
++ if (nokey && type->accept_nokey)
++ err = type->accept_nokey(ask->private, sk2);
++
++ if (err)
+ goto unlock;
+- }
+
+ sk2->sk_family = PF_ALG;
+
+- sock_hold(sk);
++ if (nokey || !ask->refcnt++)
++ sock_hold(sk);
++ ask->nokey_refcnt += nokey;
+ alg_sk(sk2)->parent = sk;
+ alg_sk(sk2)->type = type;
++ alg_sk(sk2)->nokey_refcnt = nokey;
+
+ newsock->ops = type->ops;
+ newsock->state = SS_CONNECTED;
+
++ if (nokey)
++ newsock->ops = type->ops_nokey;
++
+ err = 0;
+
+ unlock:
+diff --git a/crypto/ahash.c b/crypto/ahash.c
+index 9c1dc8d6106a..d19b52324cf5 100644
+--- a/crypto/ahash.c
++++ b/crypto/ahash.c
+@@ -451,6 +451,7 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
+ struct ahash_alg *alg = crypto_ahash_alg(hash);
+
+ hash->setkey = ahash_nosetkey;
++ hash->has_setkey = false;
+ hash->export = ahash_no_export;
+ hash->import = ahash_no_import;
+
+@@ -463,8 +464,10 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
+ hash->finup = alg->finup ?: ahash_def_finup;
+ hash->digest = alg->digest;
+
+- if (alg->setkey)
++ if (alg->setkey) {
+ hash->setkey = alg->setkey;
++ hash->has_setkey = true;
++ }
+ if (alg->export)
+ hash->export = alg->export;
+ if (alg->import)
+diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
+index 1396ad0787fc..d7a3435280d8 100644
+--- a/crypto/algif_hash.c
++++ b/crypto/algif_hash.c
+@@ -34,6 +34,11 @@ struct hash_ctx {
+ struct ahash_request req;
+ };
+
++struct algif_hash_tfm {
++ struct crypto_ahash *hash;
++ bool has_key;
++};
++
+ static int hash_sendmsg(struct socket *sock, struct msghdr *msg,
+ size_t ignored)
+ {
+@@ -49,7 +54,8 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg,
+
+ lock_sock(sk);
+ if (!ctx->more) {
+- err = crypto_ahash_init(&ctx->req);
++ err = af_alg_wait_for_completion(crypto_ahash_init(&ctx->req),
++ &ctx->completion);
+ if (err)
+ goto unlock;
+ }
+@@ -120,6 +126,7 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page,
+ } else {
+ if (!ctx->more) {
+ err = crypto_ahash_init(&ctx->req);
++ err = af_alg_wait_for_completion(err, &ctx->completion);
+ if (err)
+ goto unlock;
+ }
+@@ -227,19 +234,151 @@ static struct proto_ops algif_hash_ops = {
+ .accept = hash_accept,
+ };
+
++static int hash_check_key(struct socket *sock)
++{
++ int err = 0;
++ struct sock *psk;
++ struct alg_sock *pask;
++ struct algif_hash_tfm *tfm;
++ struct sock *sk = sock->sk;
++ struct alg_sock *ask = alg_sk(sk);
++
++ lock_sock(sk);
++ if (ask->refcnt)
++ goto unlock_child;
++
++ psk = ask->parent;
++ pask = alg_sk(ask->parent);
++ tfm = pask->private;
++
++ err = -ENOKEY;
++ lock_sock_nested(psk, SINGLE_DEPTH_NESTING);
++ if (!tfm->has_key)
++ goto unlock;
++
++ if (!pask->refcnt++)
++ sock_hold(psk);
++
++ ask->refcnt = 1;
++ sock_put(psk);
++
++ err = 0;
++
++unlock:
++ release_sock(psk);
++unlock_child:
++ release_sock(sk);
++
++ return err;
++}
++
++static int hash_sendmsg_nokey(struct socket *sock, struct msghdr *msg,
++ size_t size)
++{
++ int err;
++
++ err = hash_check_key(sock);
++ if (err)
++ return err;
++
++ return hash_sendmsg(sock, msg, size);
++}
++
++static ssize_t hash_sendpage_nokey(struct socket *sock, struct page *page,
++ int offset, size_t size, int flags)
++{
++ int err;
++
++ err = hash_check_key(sock);
++ if (err)
++ return err;
++
++ return hash_sendpage(sock, page, offset, size, flags);
++}
++
++static int hash_recvmsg_nokey(struct socket *sock, struct msghdr *msg,
++ size_t ignored, int flags)
++{
++ int err;
++
++ err = hash_check_key(sock);
++ if (err)
++ return err;
++
++ return hash_recvmsg(sock, msg, ignored, flags);
++}
++
++static int hash_accept_nokey(struct socket *sock, struct socket *newsock,
++ int flags)
++{
++ int err;
++
++ err = hash_check_key(sock);
++ if (err)
++ return err;
++
++ return hash_accept(sock, newsock, flags);
++}
++
++static struct proto_ops algif_hash_ops_nokey = {
++ .family = PF_ALG,
++
++ .connect = sock_no_connect,
++ .socketpair = sock_no_socketpair,
++ .getname = sock_no_getname,
++ .ioctl = sock_no_ioctl,
++ .listen = sock_no_listen,
++ .shutdown = sock_no_shutdown,
++ .getsockopt = sock_no_getsockopt,
++ .mmap = sock_no_mmap,
++ .bind = sock_no_bind,
++ .setsockopt = sock_no_setsockopt,
++ .poll = sock_no_poll,
++
++ .release = af_alg_release,
++ .sendmsg = hash_sendmsg_nokey,
++ .sendpage = hash_sendpage_nokey,
++ .recvmsg = hash_recvmsg_nokey,
++ .accept = hash_accept_nokey,
++};
++
+ static void *hash_bind(const char *name, u32 type, u32 mask)
+ {
+- return crypto_alloc_ahash(name, type, mask);
++ struct algif_hash_tfm *tfm;
++ struct crypto_ahash *hash;
++
++ tfm = kzalloc(sizeof(*tfm), GFP_KERNEL);
++ if (!tfm)
++ return ERR_PTR(-ENOMEM);
++
++ hash = crypto_alloc_ahash(name, type, mask);
++ if (IS_ERR(hash)) {
++ kfree(tfm);
++ return ERR_CAST(hash);
++ }
++
++ tfm->hash = hash;
++
++ return tfm;
+ }
+
+ static void hash_release(void *private)
+ {
+- crypto_free_ahash(private);
++ struct algif_hash_tfm *tfm = private;
++
++ crypto_free_ahash(tfm->hash);
++ kfree(tfm);
+ }
+
+ static int hash_setkey(void *private, const u8 *key, unsigned int keylen)
+ {
+- return crypto_ahash_setkey(private, key, keylen);
++ struct algif_hash_tfm *tfm = private;
++ int err;
++
++ err = crypto_ahash_setkey(tfm->hash, key, keylen);
++ tfm->has_key = !err;
++
++ return err;
+ }
+
+ static void hash_sock_destruct(struct sock *sk)
+@@ -253,12 +392,14 @@ static void hash_sock_destruct(struct sock *sk)
+ af_alg_release_parent(sk);
+ }
+
+-static int hash_accept_parent(void *private, struct sock *sk)
++static int hash_accept_parent_nokey(void *private, struct sock *sk)
+ {
+ struct hash_ctx *ctx;
+ struct alg_sock *ask = alg_sk(sk);
+- unsigned len = sizeof(*ctx) + crypto_ahash_reqsize(private);
+- unsigned ds = crypto_ahash_digestsize(private);
++ struct algif_hash_tfm *tfm = private;
++ struct crypto_ahash *hash = tfm->hash;
++ unsigned len = sizeof(*ctx) + crypto_ahash_reqsize(hash);
++ unsigned ds = crypto_ahash_digestsize(hash);
+
+ ctx = sock_kmalloc(sk, len, GFP_KERNEL);
+ if (!ctx)
+@@ -278,7 +419,7 @@ static int hash_accept_parent(void *private, struct sock *sk)
+
+ ask->private = ctx;
+
+- ahash_request_set_tfm(&ctx->req, private);
++ ahash_request_set_tfm(&ctx->req, hash);
+ ahash_request_set_callback(&ctx->req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ af_alg_complete, &ctx->completion);
+
+@@ -287,12 +428,24 @@ static int hash_accept_parent(void *private, struct sock *sk)
+ return 0;
+ }
+
++static int hash_accept_parent(void *private, struct sock *sk)
++{
++ struct algif_hash_tfm *tfm = private;
++
++ if (!tfm->has_key && crypto_ahash_has_setkey(tfm->hash))
++ return -ENOKEY;
++
++ return hash_accept_parent_nokey(private, sk);
++}
++
+ static const struct af_alg_type algif_type_hash = {
+ .bind = hash_bind,
+ .release = hash_release,
+ .setkey = hash_setkey,
+ .accept = hash_accept_parent,
++ .accept_nokey = hash_accept_parent_nokey,
+ .ops = &algif_hash_ops,
++ .ops_nokey = &algif_hash_ops_nokey,
+ .name = "hash",
+ .owner = THIS_MODULE
+ };
+diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
+index 945075292bc9..5bc42f9b23f0 100644
+--- a/crypto/algif_skcipher.c
++++ b/crypto/algif_skcipher.c
+@@ -387,7 +387,8 @@ static int skcipher_sendmsg(struct socket *sock, struct msghdr *msg,
+
+ sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list);
+ sg = sgl->sg;
+- sg_unmark_end(sg + sgl->cur);
++ if (sgl->cur)
++ sg_unmark_end(sg + sgl->cur - 1);
+ do {
+ i = sgl->cur;
+ plen = min_t(int, len, PAGE_SIZE);
+diff --git a/crypto/asymmetric_keys/x509_public_key.c b/crypto/asymmetric_keys/x509_public_key.c
+index 24f17e6c5904..4c850ac474e2 100644
+--- a/crypto/asymmetric_keys/x509_public_key.c
++++ b/crypto/asymmetric_keys/x509_public_key.c
+@@ -307,10 +307,6 @@ static int x509_key_preparse(struct key_preparsed_payload *prep)
+ srlen = cert->raw_serial_size;
+ q = cert->raw_serial;
+ }
+- if (srlen > 1 && *q == 0) {
+- srlen--;
+- q++;
+- }
+
+ ret = -ENOMEM;
+ desc = kmalloc(sulen + 2 + srlen * 2 + 1, GFP_KERNEL);
+diff --git a/crypto/crc32c_generic.c b/crypto/crc32c_generic.c
+index 06f1b60f02b2..4c0a0e271876 100644
+--- a/crypto/crc32c_generic.c
++++ b/crypto/crc32c_generic.c
+@@ -172,4 +172,3 @@ MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations wrapper for lib/crc32c");
+ MODULE_LICENSE("GPL");
+ MODULE_ALIAS_CRYPTO("crc32c");
+ MODULE_ALIAS_CRYPTO("crc32c-generic");
+-MODULE_SOFTDEP("pre: crc32c");
+diff --git a/crypto/shash.c b/crypto/shash.c
+index 47c713954bf3..03fbcd4a82c4 100644
+--- a/crypto/shash.c
++++ b/crypto/shash.c
+@@ -354,9 +354,10 @@ int crypto_init_shash_ops_async(struct crypto_tfm *tfm)
+ crt->final = shash_async_final;
+ crt->finup = shash_async_finup;
+ crt->digest = shash_async_digest;
++ crt->setkey = shash_async_setkey;
++
++ crt->has_setkey = alg->setkey != shash_no_setkey;
+
+- if (alg->setkey)
+- crt->setkey = shash_async_setkey;
+ if (alg->export)
+ crt->export = shash_async_export;
+ if (alg->import)
+diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c
+index 54d946a9eee6..6fbb10ca73b1 100644
+--- a/drivers/block/zram/zcomp.c
++++ b/drivers/block/zram/zcomp.c
+@@ -76,7 +76,7 @@ static void zcomp_strm_free(struct zcomp *comp, struct zcomp_strm *zstrm)
+ */
+ static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp)
+ {
+- struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_KERNEL);
++ struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_NOIO);
+ if (!zstrm)
+ return NULL;
+
+@@ -85,7 +85,7 @@ static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp)
+ * allocate 2 pages. 1 for compressed data, plus 1 extra for the
+ * case when compressed size is larger than the original one
+ */
+- zstrm->buffer = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 1);
++ zstrm->buffer = (void *)__get_free_pages(GFP_NOIO | __GFP_ZERO, 1);
+ if (!zstrm->private || !zstrm->buffer) {
+ zcomp_strm_free(comp, zstrm);
+ zstrm = NULL;
+diff --git a/drivers/block/zram/zcomp_lz4.c b/drivers/block/zram/zcomp_lz4.c
+index f2afb7e988c3..dd6083124276 100644
+--- a/drivers/block/zram/zcomp_lz4.c
++++ b/drivers/block/zram/zcomp_lz4.c
+@@ -10,17 +10,36 @@
+ #include <linux/kernel.h>
+ #include <linux/slab.h>
+ #include <linux/lz4.h>
++#include <linux/vmalloc.h>
++#include <linux/mm.h>
+
+ #include "zcomp_lz4.h"
+
+ static void *zcomp_lz4_create(void)
+ {
+- return kzalloc(LZ4_MEM_COMPRESS, GFP_KERNEL);
++ void *ret;
++
++ /*
++ * This function can be called in swapout/fs write path
++ * so we can't use GFP_FS|IO. And it assumes we already
++ * have at least one stream in zram initialization so we
++ * don't do best effort to allocate more stream in here.
++ * A default stream will work well without further multiple
++ * streams. That's why we use NORETRY | NOWARN.
++ */
++ ret = kzalloc(LZ4_MEM_COMPRESS, GFP_NOIO | __GFP_NORETRY |
++ __GFP_NOWARN);
++ if (!ret)
++ ret = __vmalloc(LZ4_MEM_COMPRESS,
++ GFP_NOIO | __GFP_NORETRY | __GFP_NOWARN |
++ __GFP_ZERO | __GFP_HIGHMEM,
++ PAGE_KERNEL);
++ return ret;
+ }
+
+ static void zcomp_lz4_destroy(void *private)
+ {
+- kfree(private);
++ kvfree(private);
+ }
+
+ static int zcomp_lz4_compress(const unsigned char *src, unsigned char *dst,
+diff --git a/drivers/block/zram/zcomp_lzo.c b/drivers/block/zram/zcomp_lzo.c
+index da1bc47d588e..edc549920fa0 100644
+--- a/drivers/block/zram/zcomp_lzo.c
++++ b/drivers/block/zram/zcomp_lzo.c
+@@ -10,17 +10,36 @@
+ #include <linux/kernel.h>
+ #include <linux/slab.h>
+ #include <linux/lzo.h>
++#include <linux/vmalloc.h>
++#include <linux/mm.h>
+
+ #include "zcomp_lzo.h"
+
+ static void *lzo_create(void)
+ {
+- return kzalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL);
++ void *ret;
++
++ /*
++ * This function can be called in swapout/fs write path
++ * so we can't use GFP_FS|IO. And it assumes we already
++ * have at least one stream in zram initialization so we
++ * don't do best effort to allocate more stream in here.
++ * A default stream will work well without further multiple
++ * streams. That's why we use NORETRY | NOWARN.
++ */
++ ret = kzalloc(LZO1X_MEM_COMPRESS, GFP_NOIO | __GFP_NORETRY |
++ __GFP_NOWARN);
++ if (!ret)
++ ret = __vmalloc(LZO1X_MEM_COMPRESS,
++ GFP_NOIO | __GFP_NORETRY | __GFP_NOWARN |
++ __GFP_ZERO | __GFP_HIGHMEM,
++ PAGE_KERNEL);
++ return ret;
+ }
+
+ static void lzo_destroy(void *private)
+ {
+- kfree(private);
++ kvfree(private);
+ }
+
+ static int lzo_compress(const unsigned char *src, unsigned char *dst,
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index 7bf87d9bfd7d..fdba79c3877c 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -144,6 +144,10 @@ static const struct usb_device_id btusb_table[] = {
+ { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_PATCHRAM },
+
++ /* Toshiba Corp - Broadcom based */
++ { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
++ .driver_info = BTUSB_BCM_PATCHRAM },
++
+ /* Intel Bluetooth USB Bootloader (RAM module) */
+ { USB_DEVICE(0x8087, 0x0a5a),
+ .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
+diff --git a/drivers/clocksource/vt8500_timer.c b/drivers/clocksource/vt8500_timer.c
+index 1098ed3b9b89..dc45ddb36117 100644
+--- a/drivers/clocksource/vt8500_timer.c
++++ b/drivers/clocksource/vt8500_timer.c
+@@ -50,6 +50,8 @@
+
+ #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
+
++#define MIN_OSCR_DELTA 16
++
+ static void __iomem *regbase;
+
+ static cycle_t vt8500_timer_read(struct clocksource *cs)
+@@ -80,7 +82,7 @@ static int vt8500_timer_set_next_event(unsigned long cycles,
+ cpu_relax();
+ writel((unsigned long)alarm, regbase + TIMER_MATCH_VAL);
+
+- if ((signed)(alarm - clocksource.read(&clocksource)) <= 16)
++ if ((signed)(alarm - clocksource.read(&clocksource)) <= MIN_OSCR_DELTA)
+ return -ETIME;
+
+ writel(1, regbase + TIMER_IER_VAL);
+@@ -160,7 +162,7 @@ static void __init vt8500_timer_init(struct device_node *np)
+ pr_err("%s: setup_irq failed for %s\n", __func__,
+ clockevent.name);
+ clockevents_config_and_register(&clockevent, VT8500_TIMER_HZ,
+- 4, 0xf0000000);
++ MIN_OSCR_DELTA * 2, 0xf0000000);
+ }
+
+ CLOCKSOURCE_OF_DECLARE(vt8500, "via,vt8500-timer", vt8500_timer_init);
+diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
+index c89a7abb523f..8d8c35623f2a 100644
+--- a/drivers/dma/at_xdmac.c
++++ b/drivers/dma/at_xdmac.c
+@@ -1230,6 +1230,7 @@ static int at_xdmac_device_terminate_all(struct dma_chan *chan)
+ list_for_each_entry_safe(desc, _desc, &atchan->xfers_list, xfer_node)
+ at_xdmac_remove_xfer(atchan, desc);
+
++ clear_bit(AT_XDMAC_CHAN_IS_PAUSED, &atchan->status);
+ clear_bit(AT_XDMAC_CHAN_IS_CYCLIC, &atchan->status);
+ spin_unlock_irqrestore(&atchan->lock, flags);
+
+@@ -1362,6 +1363,8 @@ static int atmel_xdmac_resume(struct device *dev)
+ atchan = to_at_xdmac_chan(chan);
+ at_xdmac_chan_write(atchan, AT_XDMAC_CC, atchan->save_cc);
+ if (at_xdmac_chan_is_cyclic(atchan)) {
++ if (at_xdmac_chan_is_paused(atchan))
++ at_xdmac_device_resume(chan);
+ at_xdmac_chan_write(atchan, AT_XDMAC_CNDA, atchan->save_cnda);
+ at_xdmac_chan_write(atchan, AT_XDMAC_CNDC, atchan->save_cndc);
+ at_xdmac_chan_write(atchan, AT_XDMAC_CIE, atchan->save_cim);
+diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
+index 9e504d3b0d4f..303d937d63c7 100644
+--- a/drivers/dma/dw/core.c
++++ b/drivers/dma/dw/core.c
+@@ -156,6 +156,7 @@ static void dwc_initialize(struct dw_dma_chan *dwc)
+
+ /* Enable interrupts */
+ channel_set_bit(dw, MASK.XFER, dwc->mask);
++ channel_set_bit(dw, MASK.BLOCK, dwc->mask);
+ channel_set_bit(dw, MASK.ERROR, dwc->mask);
+
+ dwc->initialized = true;
+@@ -536,16 +537,17 @@ EXPORT_SYMBOL(dw_dma_get_dst_addr);
+
+ /* Called with dwc->lock held and all DMAC interrupts disabled */
+ static void dwc_handle_cyclic(struct dw_dma *dw, struct dw_dma_chan *dwc,
+- u32 status_err, u32 status_xfer)
++ u32 status_block, u32 status_err, u32 status_xfer)
+ {
+ unsigned long flags;
+
+- if (dwc->mask) {
++ if (status_block & dwc->mask) {
+ void (*callback)(void *param);
+ void *callback_param;
+
+ dev_vdbg(chan2dev(&dwc->chan), "new cyclic period llp 0x%08x\n",
+ channel_readl(dwc, LLP));
++ dma_writel(dw, CLEAR.BLOCK, dwc->mask);
+
+ callback = dwc->cdesc->period_callback;
+ callback_param = dwc->cdesc->period_callback_param;
+@@ -577,6 +579,7 @@ static void dwc_handle_cyclic(struct dw_dma *dw, struct dw_dma_chan *dwc,
+ channel_writel(dwc, CTL_LO, 0);
+ channel_writel(dwc, CTL_HI, 0);
+
++ dma_writel(dw, CLEAR.BLOCK, dwc->mask);
+ dma_writel(dw, CLEAR.ERROR, dwc->mask);
+ dma_writel(dw, CLEAR.XFER, dwc->mask);
+
+@@ -593,10 +596,12 @@ static void dw_dma_tasklet(unsigned long data)
+ {
+ struct dw_dma *dw = (struct dw_dma *)data;
+ struct dw_dma_chan *dwc;
++ u32 status_block;
+ u32 status_xfer;
+ u32 status_err;
+ int i;
+
++ status_block = dma_readl(dw, RAW.BLOCK);
+ status_xfer = dma_readl(dw, RAW.XFER);
+ status_err = dma_readl(dw, RAW.ERROR);
+
+@@ -605,7 +610,8 @@ static void dw_dma_tasklet(unsigned long data)
+ for (i = 0; i < dw->dma.chancnt; i++) {
+ dwc = &dw->chan[i];
+ if (test_bit(DW_DMA_IS_CYCLIC, &dwc->flags))
+- dwc_handle_cyclic(dw, dwc, status_err, status_xfer);
++ dwc_handle_cyclic(dw, dwc, status_block, status_err,
++ status_xfer);
+ else if (status_err & (1 << i))
+ dwc_handle_error(dw, dwc);
+ else if (status_xfer & (1 << i))
+@@ -616,6 +622,7 @@ static void dw_dma_tasklet(unsigned long data)
+ * Re-enable interrupts.
+ */
+ channel_set_bit(dw, MASK.XFER, dw->all_chan_mask);
++ channel_set_bit(dw, MASK.BLOCK, dw->all_chan_mask);
+ channel_set_bit(dw, MASK.ERROR, dw->all_chan_mask);
+ }
+
+@@ -635,6 +642,7 @@ static irqreturn_t dw_dma_interrupt(int irq, void *dev_id)
+ * softirq handler.
+ */
+ channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask);
++ channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask);
+ channel_clear_bit(dw, MASK.ERROR, dw->all_chan_mask);
+
+ status = dma_readl(dw, STATUS_INT);
+@@ -645,6 +653,7 @@ static irqreturn_t dw_dma_interrupt(int irq, void *dev_id)
+
+ /* Try to recover */
+ channel_clear_bit(dw, MASK.XFER, (1 << 8) - 1);
++ channel_clear_bit(dw, MASK.BLOCK, (1 << 8) - 1);
+ channel_clear_bit(dw, MASK.SRC_TRAN, (1 << 8) - 1);
+ channel_clear_bit(dw, MASK.DST_TRAN, (1 << 8) - 1);
+ channel_clear_bit(dw, MASK.ERROR, (1 << 8) - 1);
+@@ -1111,6 +1120,7 @@ static void dw_dma_off(struct dw_dma *dw)
+ dma_writel(dw, CFG, 0);
+
+ channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask);
++ channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask);
+ channel_clear_bit(dw, MASK.SRC_TRAN, dw->all_chan_mask);
+ channel_clear_bit(dw, MASK.DST_TRAN, dw->all_chan_mask);
+ channel_clear_bit(dw, MASK.ERROR, dw->all_chan_mask);
+@@ -1216,6 +1226,7 @@ static void dwc_free_chan_resources(struct dma_chan *chan)
+
+ /* Disable interrupts */
+ channel_clear_bit(dw, MASK.XFER, dwc->mask);
++ channel_clear_bit(dw, MASK.BLOCK, dwc->mask);
+ channel_clear_bit(dw, MASK.ERROR, dwc->mask);
+
+ spin_unlock_irqrestore(&dwc->lock, flags);
+@@ -1245,7 +1256,6 @@ static void dwc_free_chan_resources(struct dma_chan *chan)
+ int dw_dma_cyclic_start(struct dma_chan *chan)
+ {
+ struct dw_dma_chan *dwc = to_dw_dma_chan(chan);
+- struct dw_dma *dw = to_dw_dma(dwc->chan.device);
+ unsigned long flags;
+
+ if (!test_bit(DW_DMA_IS_CYCLIC, &dwc->flags)) {
+@@ -1254,27 +1264,7 @@ int dw_dma_cyclic_start(struct dma_chan *chan)
+ }
+
+ spin_lock_irqsave(&dwc->lock, flags);
+-
+- /* Assert channel is idle */
+- if (dma_readl(dw, CH_EN) & dwc->mask) {
+- dev_err(chan2dev(&dwc->chan),
+- "%s: BUG: Attempted to start non-idle channel\n",
+- __func__);
+- dwc_dump_chan_regs(dwc);
+- spin_unlock_irqrestore(&dwc->lock, flags);
+- return -EBUSY;
+- }
+-
+- dma_writel(dw, CLEAR.ERROR, dwc->mask);
+- dma_writel(dw, CLEAR.XFER, dwc->mask);
+-
+- /* Setup DMAC channel registers */
+- channel_writel(dwc, LLP, dwc->cdesc->desc[0]->txd.phys);
+- channel_writel(dwc, CTL_LO, DWC_CTLL_LLP_D_EN | DWC_CTLL_LLP_S_EN);
+- channel_writel(dwc, CTL_HI, 0);
+-
+- channel_set_bit(dw, CH_EN, dwc->mask);
+-
++ dwc_dostart(dwc, dwc->cdesc->desc[0]);
+ spin_unlock_irqrestore(&dwc->lock, flags);
+
+ return 0;
+@@ -1479,6 +1469,7 @@ void dw_dma_cyclic_free(struct dma_chan *chan)
+
+ dwc_chan_disable(dw, dwc);
+
++ dma_writel(dw, CLEAR.BLOCK, dwc->mask);
+ dma_writel(dw, CLEAR.ERROR, dwc->mask);
+ dma_writel(dw, CLEAR.XFER, dwc->mask);
+
+@@ -1569,9 +1560,6 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
+ /* Force dma off, just in case */
+ dw_dma_off(dw);
+
+- /* Disable BLOCK interrupts as well */
+- channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask);
+-
+ /* Create a pool of consistent memory blocks for hardware descriptors */
+ dw->desc_pool = dmam_pool_create("dw_dmac_desc_pool", chip->dev,
+ sizeof(struct dw_desc), 4, 0);
+diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
+index 592af5f0cf39..53587377e672 100644
+--- a/drivers/edac/edac_device.c
++++ b/drivers/edac/edac_device.c
+@@ -435,16 +435,13 @@ void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev,
+ */
+ void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev)
+ {
+- int status;
+-
+ if (!edac_dev->edac_check)
+ return;
+
+- status = cancel_delayed_work(&edac_dev->work);
+- if (status == 0) {
+- /* workq instance might be running, wait for it */
+- flush_workqueue(edac_workqueue);
+- }
++ edac_dev->op_state = OP_OFFLINE;
++
++ cancel_delayed_work_sync(&edac_dev->work);
++ flush_workqueue(edac_workqueue);
+ }
+
+ /*
+diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
+index af3be1914dbb..63ceb2d98565 100644
+--- a/drivers/edac/edac_mc.c
++++ b/drivers/edac/edac_mc.c
+@@ -581,18 +581,10 @@ static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec,
+ */
+ static void edac_mc_workq_teardown(struct mem_ctl_info *mci)
+ {
+- int status;
+-
+- if (mci->op_state != OP_RUNNING_POLL)
+- return;
+-
+- status = cancel_delayed_work(&mci->work);
+- if (status == 0) {
+- edac_dbg(0, "not canceled, flush the queue\n");
++ mci->op_state = OP_OFFLINE;
+
+- /* workq instance might be running, wait for it */
+- flush_workqueue(edac_workqueue);
+- }
++ cancel_delayed_work_sync(&mci->work);
++ flush_workqueue(edac_workqueue);
+ }
+
+ /*
+diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
+index 112d63ad1154..67dc90365389 100644
+--- a/drivers/edac/edac_mc_sysfs.c
++++ b/drivers/edac/edac_mc_sysfs.c
+@@ -977,21 +977,26 @@ nomem:
+ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci,
+ const struct attribute_group **groups)
+ {
++ char *name;
+ int i, err;
+
+ /*
+ * The memory controller needs its own bus, in order to avoid
+ * namespace conflicts at /sys/bus/edac.
+ */
+- mci->bus->name = kasprintf(GFP_KERNEL, "mc%d", mci->mc_idx);
+- if (!mci->bus->name)
++ name = kasprintf(GFP_KERNEL, "mc%d", mci->mc_idx);
++ if (!name)
+ return -ENOMEM;
+
++ mci->bus->name = name;
++
+ edac_dbg(0, "creating bus %s\n", mci->bus->name);
+
+ err = bus_register(mci->bus);
+- if (err < 0)
+- goto fail_free_name;
++ if (err < 0) {
++ kfree(name);
++ return err;
++ }
+
+ /* get the /sys/devices/system/edac subsys reference */
+ mci->dev.type = &mci_attr_type;
+@@ -1060,8 +1065,8 @@ fail_unregister_dimm:
+ device_unregister(&mci->dev);
+ fail_unregister_bus:
+ bus_unregister(mci->bus);
+-fail_free_name:
+- kfree(mci->bus->name);
++ kfree(name);
++
+ return err;
+ }
+
+@@ -1092,10 +1097,12 @@ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
+
+ void edac_unregister_sysfs(struct mem_ctl_info *mci)
+ {
++ const char *name = mci->bus->name;
++
+ edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev));
+ device_unregister(&mci->dev);
+ bus_unregister(mci->bus);
+- kfree(mci->bus->name);
++ kfree(name);
+ }
+
+ static void mc_attr_release(struct device *dev)
+diff --git a/drivers/edac/edac_pci.c b/drivers/edac/edac_pci.c
+index 2cf44b4db80c..b4b38603b804 100644
+--- a/drivers/edac/edac_pci.c
++++ b/drivers/edac/edac_pci.c
+@@ -274,13 +274,12 @@ static void edac_pci_workq_setup(struct edac_pci_ctl_info *pci,
+ */
+ static void edac_pci_workq_teardown(struct edac_pci_ctl_info *pci)
+ {
+- int status;
+-
+ edac_dbg(0, "\n");
+
+- status = cancel_delayed_work(&pci->work);
+- if (status == 0)
+- flush_workqueue(edac_workqueue);
++ pci->op_state = OP_OFFLINE;
++
++ cancel_delayed_work_sync(&pci->work);
++ flush_workqueue(edac_workqueue);
+ }
+
+ /*
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 109e776345d3..0ec9ad50ba7c 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -861,28 +861,33 @@ static void drm_dp_destroy_port(struct kref *kref)
+ {
+ struct drm_dp_mst_port *port = container_of(kref, struct drm_dp_mst_port, kref);
+ struct drm_dp_mst_topology_mgr *mgr = port->mgr;
++
+ if (!port->input) {
+ port->vcpi.num_slots = 0;
+
+ kfree(port->cached_edid);
+
+- /* we can't destroy the connector here, as
+- we might be holding the mode_config.mutex
+- from an EDID retrieval */
++ /*
++ * The only time we don't have a connector
++ * on an output port is if the connector init
++ * fails.
++ */
+ if (port->connector) {
++ /* we can't destroy the connector here, as
++ * we might be holding the mode_config.mutex
++ * from an EDID retrieval */
++
+ mutex_lock(&mgr->destroy_connector_lock);
+- list_add(&port->connector->destroy_list, &mgr->destroy_connector_list);
++ list_add(&port->next, &mgr->destroy_connector_list);
+ mutex_unlock(&mgr->destroy_connector_lock);
+ schedule_work(&mgr->destroy_connector_work);
++ return;
+ }
++ /* no need to clean up vcpi
++ * as if we have no connector we never setup a vcpi */
+ drm_dp_port_teardown_pdt(port, port->pdt);
+-
+- if (!port->input && port->vcpi.vcpi > 0)
+- drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
+ }
+ kfree(port);
+-
+- (*mgr->cbs->hotplug)(mgr);
+ }
+
+ static void drm_dp_put_port(struct drm_dp_mst_port *port)
+@@ -968,17 +973,17 @@ static struct drm_dp_mst_port *drm_dp_get_port(struct drm_dp_mst_branch *mstb, u
+ static u8 drm_dp_calculate_rad(struct drm_dp_mst_port *port,
+ u8 *rad)
+ {
+- int lct = port->parent->lct;
++ int parent_lct = port->parent->lct;
+ int shift = 4;
+- int idx = lct / 2;
+- if (lct > 1) {
+- memcpy(rad, port->parent->rad, idx);
+- shift = (lct % 2) ? 4 : 0;
++ int idx = (parent_lct - 1) / 2;
++ if (parent_lct > 1) {
++ memcpy(rad, port->parent->rad, idx + 1);
++ shift = (parent_lct % 2) ? 4 : 0;
+ } else
+ rad[0] = 0;
+
+ rad[idx] |= port->port_num << shift;
+- return lct + 1;
++ return parent_lct + 1;
+ }
+
+ /*
+@@ -1034,7 +1039,7 @@ static void build_mst_prop_path(struct drm_dp_mst_port *port,
+ snprintf(proppath, proppath_size, "mst:%d", mstb->mgr->conn_base_id);
+ for (i = 0; i < (mstb->lct - 1); i++) {
+ int shift = (i % 2) ? 0 : 4;
+- int port_num = mstb->rad[i / 2] >> shift;
++ int port_num = (mstb->rad[i / 2] >> shift) & 0xf;
+ snprintf(temp, sizeof(temp), "-%d", port_num);
+ strlcat(proppath, temp, proppath_size);
+ }
+@@ -1112,12 +1117,21 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
+ char proppath[255];
+ build_mst_prop_path(port, mstb, proppath, sizeof(proppath));
+ port->connector = (*mstb->mgr->cbs->add_connector)(mstb->mgr, port, proppath);
+-
++ if (!port->connector) {
++ /* remove it from the port list */
++ mutex_lock(&mstb->mgr->lock);
++ list_del(&port->next);
++ mutex_unlock(&mstb->mgr->lock);
++ /* drop port list reference */
++ drm_dp_put_port(port);
++ goto out;
++ }
+ if (port->port_num >= 8) {
+ port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc);
+ }
+ }
+
++out:
+ /* put reference to this port */
+ drm_dp_put_port(port);
+ }
+@@ -1175,7 +1189,7 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_
+
+ for (i = 0; i < lct - 1; i++) {
+ int shift = (i % 2) ? 0 : 4;
+- int port_num = rad[i / 2] >> shift;
++ int port_num = (rad[i / 2] >> shift) & 0xf;
+
+ list_for_each_entry(port, &mstb->ports, next) {
+ if (port->port_num == port_num) {
+@@ -1195,6 +1209,50 @@ out:
+ return mstb;
+ }
+
++static struct drm_dp_mst_branch *get_mst_branch_device_by_guid_helper(
++ struct drm_dp_mst_branch *mstb,
++ uint8_t *guid)
++{
++ struct drm_dp_mst_branch *found_mstb;
++ struct drm_dp_mst_port *port;
++
++ list_for_each_entry(port, &mstb->ports, next) {
++ if (!port->mstb)
++ continue;
++
++ if (port->guid_valid && memcmp(port->guid, guid, 16) == 0)
++ return port->mstb;
++
++ found_mstb = get_mst_branch_device_by_guid_helper(port->mstb, guid);
++
++ if (found_mstb)
++ return found_mstb;
++ }
++
++ return NULL;
++}
++
++static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device_by_guid(
++ struct drm_dp_mst_topology_mgr *mgr,
++ uint8_t *guid)
++{
++ struct drm_dp_mst_branch *mstb;
++
++ /* find the port by iterating down */
++ mutex_lock(&mgr->lock);
++
++ if (mgr->guid_valid && memcmp(mgr->guid, guid, 16) == 0)
++ mstb = mgr->mst_primary;
++ else
++ mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid);
++
++ if (mstb)
++ kref_get(&mstb->kref);
++
++ mutex_unlock(&mgr->lock);
++ return mstb;
++}
++
+ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_mst_branch *mstb)
+ {
+@@ -1306,6 +1364,7 @@ static int set_hdr_from_dst_qlock(struct drm_dp_sideband_msg_hdr *hdr,
+ struct drm_dp_sideband_msg_tx *txmsg)
+ {
+ struct drm_dp_mst_branch *mstb = txmsg->dst;
++ u8 req_type;
+
+ /* both msg slots are full */
+ if (txmsg->seqno == -1) {
+@@ -1322,7 +1381,13 @@ static int set_hdr_from_dst_qlock(struct drm_dp_sideband_msg_hdr *hdr,
+ txmsg->seqno = 1;
+ mstb->tx_slots[txmsg->seqno] = txmsg;
+ }
+- hdr->broadcast = 0;
++
++ req_type = txmsg->msg[0] & 0x7f;
++ if (req_type == DP_CONNECTION_STATUS_NOTIFY ||
++ req_type == DP_RESOURCE_STATUS_NOTIFY)
++ hdr->broadcast = 1;
++ else
++ hdr->broadcast = 0;
+ hdr->path_msg = txmsg->path_msg;
+ hdr->lct = mstb->lct;
+ hdr->lcr = mstb->lct - 1;
+@@ -1424,26 +1489,18 @@ static void process_single_down_tx_qlock(struct drm_dp_mst_topology_mgr *mgr)
+ }
+
+ /* called holding qlock */
+-static void process_single_up_tx_qlock(struct drm_dp_mst_topology_mgr *mgr)
++static void process_single_up_tx_qlock(struct drm_dp_mst_topology_mgr *mgr,
++ struct drm_dp_sideband_msg_tx *txmsg)
+ {
+- struct drm_dp_sideband_msg_tx *txmsg;
+ int ret;
+
+ /* construct a chunk from the first msg in the tx_msg queue */
+- if (list_empty(&mgr->tx_msg_upq)) {
+- mgr->tx_up_in_progress = false;
+- return;
+- }
+-
+- txmsg = list_first_entry(&mgr->tx_msg_upq, struct drm_dp_sideband_msg_tx, next);
+ ret = process_single_tx_qlock(mgr, txmsg, true);
+- if (ret == 1) {
+- /* up txmsgs aren't put in slots - so free after we send it */
+- list_del(&txmsg->next);
+- kfree(txmsg);
+- } else if (ret)
++
++ if (ret != 1)
+ DRM_DEBUG_KMS("failed to send msg in q %d\n", ret);
+- mgr->tx_up_in_progress = true;
++
++ txmsg->dst->tx_slots[txmsg->seqno] = NULL;
+ }
+
+ static void drm_dp_queue_down_tx(struct drm_dp_mst_topology_mgr *mgr,
+@@ -1828,11 +1885,12 @@ static int drm_dp_send_up_ack_reply(struct drm_dp_mst_topology_mgr *mgr,
+ drm_dp_encode_up_ack_reply(txmsg, req_type);
+
+ mutex_lock(&mgr->qlock);
+- list_add_tail(&txmsg->next, &mgr->tx_msg_upq);
+- if (!mgr->tx_up_in_progress) {
+- process_single_up_tx_qlock(mgr);
+- }
++
++ process_single_up_tx_qlock(mgr, txmsg);
++
+ mutex_unlock(&mgr->qlock);
++
++ kfree(txmsg);
+ return 0;
+ }
+
+@@ -2129,28 +2187,50 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
+
+ if (mgr->up_req_recv.have_eomt) {
+ struct drm_dp_sideband_msg_req_body msg;
+- struct drm_dp_mst_branch *mstb;
++ struct drm_dp_mst_branch *mstb = NULL;
+ bool seqno;
+- mstb = drm_dp_get_mst_branch_device(mgr,
+- mgr->up_req_recv.initial_hdr.lct,
+- mgr->up_req_recv.initial_hdr.rad);
+- if (!mstb) {
+- DRM_DEBUG_KMS("Got MST reply from unknown device %d\n", mgr->up_req_recv.initial_hdr.lct);
+- memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
+- return 0;
++
++ if (!mgr->up_req_recv.initial_hdr.broadcast) {
++ mstb = drm_dp_get_mst_branch_device(mgr,
++ mgr->up_req_recv.initial_hdr.lct,
++ mgr->up_req_recv.initial_hdr.rad);
++ if (!mstb) {
++ DRM_DEBUG_KMS("Got MST reply from unknown device %d\n", mgr->up_req_recv.initial_hdr.lct);
++ memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
++ return 0;
++ }
+ }
+
+ seqno = mgr->up_req_recv.initial_hdr.seqno;
+ drm_dp_sideband_parse_req(&mgr->up_req_recv, &msg);
+
+ if (msg.req_type == DP_CONNECTION_STATUS_NOTIFY) {
+- drm_dp_send_up_ack_reply(mgr, mstb, msg.req_type, seqno, false);
++ drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false);
++
++ if (!mstb)
++ mstb = drm_dp_get_mst_branch_device_by_guid(mgr, msg.u.conn_stat.guid);
++
++ if (!mstb) {
++ DRM_DEBUG_KMS("Got MST reply from unknown device %d\n", mgr->up_req_recv.initial_hdr.lct);
++ memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
++ return 0;
++ }
++
+ drm_dp_update_port(mstb, &msg.u.conn_stat);
+ DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number, msg.u.conn_stat.legacy_device_plug_status, msg.u.conn_stat.displayport_device_plug_status, msg.u.conn_stat.message_capability_status, msg.u.conn_stat.input_port, msg.u.conn_stat.peer_device_type);
+ (*mgr->cbs->hotplug)(mgr);
+
+ } else if (msg.req_type == DP_RESOURCE_STATUS_NOTIFY) {
+- drm_dp_send_up_ack_reply(mgr, mstb, msg.req_type, seqno, false);
++ drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false);
++ if (!mstb)
++ mstb = drm_dp_get_mst_branch_device_by_guid(mgr, msg.u.resource_stat.guid);
++
++ if (!mstb) {
++ DRM_DEBUG_KMS("Got MST reply from unknown device %d\n", mgr->up_req_recv.initial_hdr.lct);
++ memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
++ return 0;
++ }
++
+ DRM_DEBUG_KMS("Got RSN: pn: %d avail_pbn %d\n", msg.u.resource_stat.port_number, msg.u.resource_stat.available_pbn);
+ }
+
+@@ -2330,6 +2410,7 @@ bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp
+ DRM_DEBUG_KMS("payload: vcpi %d already allocated for pbn %d - requested pbn %d\n", port->vcpi.vcpi, port->vcpi.pbn, pbn);
+ if (pbn == port->vcpi.pbn) {
+ *slots = port->vcpi.num_slots;
++ drm_dp_put_port(port);
+ return true;
+ }
+ }
+@@ -2489,32 +2570,31 @@ EXPORT_SYMBOL(drm_dp_check_act_status);
+ */
+ int drm_dp_calc_pbn_mode(int clock, int bpp)
+ {
+- fixed20_12 pix_bw;
+- fixed20_12 fbpp;
+- fixed20_12 result;
+- fixed20_12 margin, tmp;
+- u32 res;
+-
+- pix_bw.full = dfixed_const(clock);
+- fbpp.full = dfixed_const(bpp);
+- tmp.full = dfixed_const(8);
+- fbpp.full = dfixed_div(fbpp, tmp);
+-
+- result.full = dfixed_mul(pix_bw, fbpp);
+- margin.full = dfixed_const(54);
+- tmp.full = dfixed_const(64);
+- margin.full = dfixed_div(margin, tmp);
+- result.full = dfixed_div(result, margin);
+-
+- margin.full = dfixed_const(1006);
+- tmp.full = dfixed_const(1000);
+- margin.full = dfixed_div(margin, tmp);
+- result.full = dfixed_mul(result, margin);
+-
+- result.full = dfixed_div(result, tmp);
+- result.full = dfixed_ceil(result);
+- res = dfixed_trunc(result);
+- return res;
++ u64 kbps;
++ s64 peak_kbps;
++ u32 numerator;
++ u32 denominator;
++
++ kbps = clock * bpp;
++
++ /*
++ * margin 5300ppm + 300ppm ~ 0.6% as per spec, factor is 1.006
++ * The unit of 54/64Mbytes/sec is an arbitrary unit chosen based on
++ * common multiplier to render an integer PBN for all link rate/lane
++ * counts combinations
++ * calculate
++ * peak_kbps *= (1006/1000)
++ * peak_kbps *= (64/54)
++ * peak_kbps *= 8 convert to bytes
++ */
++
++ numerator = 64 * 1006;
++ denominator = 54 * 8 * 1000 * 1000;
++
++ kbps *= numerator;
++ peak_kbps = drm_fixp_from_fraction(kbps, denominator);
++
++ return drm_fixp2int_ceil(peak_kbps);
+ }
+ EXPORT_SYMBOL(drm_dp_calc_pbn_mode);
+
+@@ -2522,11 +2602,23 @@ static int test_calc_pbn_mode(void)
+ {
+ int ret;
+ ret = drm_dp_calc_pbn_mode(154000, 30);
+- if (ret != 689)
++ if (ret != 689) {
++ DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n",
++ 154000, 30, 689, ret);
+ return -EINVAL;
++ }
+ ret = drm_dp_calc_pbn_mode(234000, 30);
+- if (ret != 1047)
++ if (ret != 1047) {
++ DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n",
++ 234000, 30, 1047, ret);
+ return -EINVAL;
++ }
++ ret = drm_dp_calc_pbn_mode(297000, 24);
++ if (ret != 1063) {
++ DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n",
++ 297000, 24, 1063, ret);
++ return -EINVAL;
++ }
+ return 0;
+ }
+
+@@ -2660,8 +2752,8 @@ static void drm_dp_tx_work(struct work_struct *work)
+ static void drm_dp_destroy_connector_work(struct work_struct *work)
+ {
+ struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, destroy_connector_work);
+- struct drm_connector *connector;
+-
++ struct drm_dp_mst_port *port;
++ bool send_hotplug = false;
+ /*
+ * Not a regular list traverse as we have to drop the destroy
+ * connector lock before destroying the connector, to avoid AB->BA
+@@ -2669,16 +2761,25 @@ static void drm_dp_destroy_connector_work(struct work_struct *work)
+ */
+ for (;;) {
+ mutex_lock(&mgr->destroy_connector_lock);
+- connector = list_first_entry_or_null(&mgr->destroy_connector_list, struct drm_connector, destroy_list);
+- if (!connector) {
++ port = list_first_entry_or_null(&mgr->destroy_connector_list, struct drm_dp_mst_port, next);
++ if (!port) {
+ mutex_unlock(&mgr->destroy_connector_lock);
+ break;
+ }
+- list_del(&connector->destroy_list);
++ list_del(&port->next);
+ mutex_unlock(&mgr->destroy_connector_lock);
+
+- mgr->cbs->destroy_connector(mgr, connector);
++ mgr->cbs->destroy_connector(mgr, port->connector);
++
++ drm_dp_port_teardown_pdt(port, port->pdt);
++
++ if (!port->input && port->vcpi.vcpi > 0)
++ drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
++ kfree(port);
++ send_hotplug = true;
+ }
++ if (send_hotplug)
++ (*mgr->cbs->hotplug)(mgr);
+ }
+
+ /**
+@@ -2701,7 +2802,6 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr,
+ mutex_init(&mgr->qlock);
+ mutex_init(&mgr->payload_lock);
+ mutex_init(&mgr->destroy_connector_lock);
+- INIT_LIST_HEAD(&mgr->tx_msg_upq);
+ INIT_LIST_HEAD(&mgr->tx_msg_downq);
+ INIT_LIST_HEAD(&mgr->destroy_connector_list);
+ INIT_WORK(&mgr->work, drm_dp_mst_link_probe_work);
+diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
+index 63503879a676..0d75e75b1da3 100644
+--- a/drivers/gpu/drm/drm_probe_helper.c
++++ b/drivers/gpu/drm/drm_probe_helper.c
+@@ -195,7 +195,8 @@ static int drm_helper_probe_single_connector_modes_merge_bits(struct drm_connect
+ mode_flags |= DRM_MODE_FLAG_3D_MASK;
+
+ list_for_each_entry(mode, &connector->modes, head) {
+- mode->status = drm_mode_validate_basic(mode);
++ if (mode->status == MODE_OK)
++ mode->status = drm_mode_validate_basic(mode);
+
+ if (mode->status == MODE_OK)
+ mode->status = drm_mode_validate_size(mode, maxX, maxY);
+diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
+index f3e84c44d009..4decf518d106 100644
+--- a/drivers/gpu/drm/i915/i915_gem_context.c
++++ b/drivers/gpu/drm/i915/i915_gem_context.c
+@@ -317,6 +317,10 @@ void i915_gem_context_reset(struct drm_device *dev)
+ i915_gem_context_unreference(lctx);
+ ring->last_context = NULL;
+ }
++
++ /* Force the GPU state to be reinitialised on enabling */
++ if (ring->default_context)
++ ring->default_context->legacy_hw_ctx.initialized = false;
+ }
+ }
+
+@@ -704,7 +708,7 @@ static int do_switch(struct intel_engine_cs *ring,
+ goto unpin_out;
+ }
+
+- if (!to->legacy_hw_ctx.initialized) {
++ if (!to->legacy_hw_ctx.initialized || i915_gem_context_is_default(to)) {
+ hw_flags |= MI_RESTORE_INHIBIT;
+ /* NB: If we inhibit the restore, the context is not allowed to
+ * die because future work may end up depending on valid address
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index 7b27a114b030..b103773df2a3 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -10391,11 +10391,21 @@ connected_sink_compute_bpp(struct intel_connector *connector,
+ pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
+ }
+
+- /* Clamp bpp to 8 on screens without EDID 1.4 */
+- if (connector->base.display_info.bpc == 0 && bpp > 24) {
+- DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
+- bpp);
+- pipe_config->pipe_bpp = 24;
++ /* Clamp bpp to default limit on screens without EDID 1.4 */
++ if (connector->base.display_info.bpc == 0) {
++ int type = connector->base.connector_type;
++ int clamp_bpp = 24;
++
++ /* Fall back to 18 bpp when DP sink capability is unknown. */
++ if (type == DRM_MODE_CONNECTOR_DisplayPort ||
++ type == DRM_MODE_CONNECTOR_eDP)
++ clamp_bpp = 18;
++
++ if (bpp > clamp_bpp) {
++ DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of %d\n",
++ bpp, clamp_bpp);
++ pipe_config->pipe_bpp = clamp_bpp;
++ }
+ }
+ }
+
+diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
+index 5cb47482d29f..88c557551b89 100644
+--- a/drivers/gpu/drm/i915/intel_dp_mst.c
++++ b/drivers/gpu/drm/i915/intel_dp_mst.c
+@@ -439,9 +439,9 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
+
+ drm_mode_connector_set_path_property(connector, pathprop);
+ drm_reinit_primary_mode_group(dev);
+- mutex_lock(&dev->mode_config.mutex);
++ drm_modeset_lock_all(dev);
+ intel_connector_add_to_fbdev(intel_connector);
+- mutex_unlock(&dev->mode_config.mutex);
++ drm_modeset_unlock_all(dev);
+ drm_connector_register(&intel_connector->base);
+ return connector;
+ }
+@@ -452,16 +452,16 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+ struct drm_device *dev = connector->dev;
+ /* need to nuke the connector */
+- mutex_lock(&dev->mode_config.mutex);
++ drm_modeset_lock_all(dev);
+ intel_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+- mutex_unlock(&dev->mode_config.mutex);
++ drm_modeset_unlock_all(dev);
+
+ intel_connector->unregister(intel_connector);
+
+- mutex_lock(&dev->mode_config.mutex);
++ drm_modeset_lock_all(dev);
+ intel_connector_remove_from_fbdev(intel_connector);
+ drm_connector_cleanup(connector);
+- mutex_unlock(&dev->mode_config.mutex);
++ drm_modeset_unlock_all(dev);
+
+ drm_reinit_primary_mode_group(dev);
+
+diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
+index 3162040bc314..05490ef5a2aa 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
++++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
+@@ -969,10 +969,13 @@ nouveau_connector_hotplug(struct nvif_notify *notify)
+
+ NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
+
++ mutex_lock(&drm->dev->mode_config.mutex);
+ if (plugged)
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+ else
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
++ mutex_unlock(&drm->dev->mode_config.mutex);
++
+ drm_helper_hpd_irq_event(connector->dev);
+ }
+
+diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
+index 5be50ef2b30e..bb292143997e 100644
+--- a/drivers/gpu/drm/radeon/atombios_encoders.c
++++ b/drivers/gpu/drm/radeon/atombios_encoders.c
+@@ -2310,8 +2310,7 @@ radeon_atom_encoder_mode_set(struct drm_encoder *encoder,
+ encoder_mode = atombios_get_encoder_mode(encoder);
+ if (connector && (radeon_audio != 0) &&
+ ((encoder_mode == ATOM_ENCODER_MODE_HDMI) ||
+- (ENCODER_MODE_IS_DP(encoder_mode) &&
+- drm_detect_monitor_audio(radeon_connector_edid(connector)))))
++ ENCODER_MODE_IS_DP(encoder_mode)))
+ radeon_audio_mode_set(encoder, adjusted_mode);
+ }
+
+diff --git a/drivers/gpu/drm/radeon/dce6_afmt.c b/drivers/gpu/drm/radeon/dce6_afmt.c
+index 44480c1b9738..848b1ffd5cc4 100644
+--- a/drivers/gpu/drm/radeon/dce6_afmt.c
++++ b/drivers/gpu/drm/radeon/dce6_afmt.c
+@@ -282,6 +282,14 @@ void dce6_dp_audio_set_dto(struct radeon_device *rdev,
+ * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
+ */
+ if (ASIC_IS_DCE8(rdev)) {
++ unsigned int div = (RREG32(DENTIST_DISPCLK_CNTL) &
++ DENTIST_DPREFCLK_WDIVIDER_MASK) >>
++ DENTIST_DPREFCLK_WDIVIDER_SHIFT;
++ div = radeon_audio_decode_dfs_div(div);
++
++ if (div)
++ clock = clock * 100 / div;
++
+ WREG32(DCE8_DCCG_AUDIO_DTO1_PHASE, 24000);
+ WREG32(DCE8_DCCG_AUDIO_DTO1_MODULE, clock);
+ } else {
+diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c
+index 9953356fe263..3cf04a2f44bb 100644
+--- a/drivers/gpu/drm/radeon/evergreen_hdmi.c
++++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c
+@@ -289,6 +289,16 @@ void dce4_dp_audio_set_dto(struct radeon_device *rdev,
+ * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE
+ * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
+ */
++ if (ASIC_IS_DCE41(rdev)) {
++ unsigned int div = (RREG32(DCE41_DENTIST_DISPCLK_CNTL) &
++ DENTIST_DPREFCLK_WDIVIDER_MASK) >>
++ DENTIST_DPREFCLK_WDIVIDER_SHIFT;
++ div = radeon_audio_decode_dfs_div(div);
++
++ if (div)
++ clock = 100 * clock / div;
++ }
++
+ WREG32(DCCG_AUDIO_DTO1_PHASE, 24000);
+ WREG32(DCCG_AUDIO_DTO1_MODULE, clock);
+ }
+diff --git a/drivers/gpu/drm/radeon/evergreend.h b/drivers/gpu/drm/radeon/evergreend.h
+index 4aa5f755572b..13b6029d65cc 100644
+--- a/drivers/gpu/drm/radeon/evergreend.h
++++ b/drivers/gpu/drm/radeon/evergreend.h
+@@ -511,6 +511,11 @@
+ #define DCCG_AUDIO_DTO1_CNTL 0x05cc
+ # define DCCG_AUDIO_DTO1_USE_512FBR_DTO (1 << 3)
+
++#define DCE41_DENTIST_DISPCLK_CNTL 0x049c
++# define DENTIST_DPREFCLK_WDIVIDER(x) (((x) & 0x7f) << 24)
++# define DENTIST_DPREFCLK_WDIVIDER_MASK (0x7f << 24)
++# define DENTIST_DPREFCLK_WDIVIDER_SHIFT 24
++
+ /* DCE 4.0 AFMT */
+ #define HDMI_CONTROL 0x7030
+ # define HDMI_KEEPOUT_MODE (1 << 0)
+diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
+index 91c3f60f8bac..4bca29c5abfa 100644
+--- a/drivers/gpu/drm/radeon/radeon.h
++++ b/drivers/gpu/drm/radeon/radeon.h
+@@ -268,6 +268,7 @@ struct radeon_clock {
+ uint32_t current_dispclk;
+ uint32_t dp_extclk;
+ uint32_t max_pixel_clock;
++ uint32_t vco_freq;
+ };
+
+ /*
+diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
+index 8f285244c839..de9a2ffcf5f7 100644
+--- a/drivers/gpu/drm/radeon/radeon_atombios.c
++++ b/drivers/gpu/drm/radeon/radeon_atombios.c
+@@ -437,7 +437,9 @@ static bool radeon_atom_apply_quirks(struct drm_device *dev,
+ }
+
+ /* Fujitsu D3003-S2 board lists DVI-I as DVI-D and VGA */
+- if (((dev->pdev->device == 0x9802) || (dev->pdev->device == 0x9806)) &&
++ if (((dev->pdev->device == 0x9802) ||
++ (dev->pdev->device == 0x9805) ||
++ (dev->pdev->device == 0x9806)) &&
+ (dev->pdev->subsystem_vendor == 0x1734) &&
+ (dev->pdev->subsystem_device == 0x11bd)) {
+ if (*connector_type == DRM_MODE_CONNECTOR_VGA) {
+@@ -448,14 +450,6 @@ static bool radeon_atom_apply_quirks(struct drm_device *dev,
+ }
+ }
+
+- /* Fujitsu D3003-S2 board lists DVI-I as DVI-I and VGA */
+- if ((dev->pdev->device == 0x9805) &&
+- (dev->pdev->subsystem_vendor == 0x1734) &&
+- (dev->pdev->subsystem_device == 0x11bd)) {
+- if (*connector_type == DRM_MODE_CONNECTOR_VGA)
+- return false;
+- }
+-
+ return true;
+ }
+
+@@ -1112,6 +1106,31 @@ union firmware_info {
+ ATOM_FIRMWARE_INFO_V2_2 info_22;
+ };
+
++union igp_info {
++ struct _ATOM_INTEGRATED_SYSTEM_INFO info;
++ struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;
++ struct _ATOM_INTEGRATED_SYSTEM_INFO_V6 info_6;
++ struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_7 info_7;
++ struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_8 info_8;
++};
++
++static void radeon_atombios_get_dentist_vco_freq(struct radeon_device *rdev)
++{
++ struct radeon_mode_info *mode_info = &rdev->mode_info;
++ int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
++ union igp_info *igp_info;
++ u8 frev, crev;
++ u16 data_offset;
++
++ if (atom_parse_data_header(mode_info->atom_context, index, NULL,
++ &frev, &crev, &data_offset)) {
++ igp_info = (union igp_info *)(mode_info->atom_context->bios +
++ data_offset);
++ rdev->clock.vco_freq =
++ le32_to_cpu(igp_info->info_6.ulDentistVCOFreq);
++ }
++}
++
+ bool radeon_atom_get_clock_info(struct drm_device *dev)
+ {
+ struct radeon_device *rdev = dev->dev_private;
+@@ -1263,20 +1282,25 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
+ rdev->mode_info.firmware_flags =
+ le16_to_cpu(firmware_info->info.usFirmwareCapability.susAccess);
+
++ if (ASIC_IS_DCE8(rdev))
++ rdev->clock.vco_freq =
++ le32_to_cpu(firmware_info->info_22.ulGPUPLL_OutputFreq);
++ else if (ASIC_IS_DCE5(rdev))
++ rdev->clock.vco_freq = rdev->clock.current_dispclk;
++ else if (ASIC_IS_DCE41(rdev))
++ radeon_atombios_get_dentist_vco_freq(rdev);
++ else
++ rdev->clock.vco_freq = rdev->clock.current_dispclk;
++
++ if (rdev->clock.vco_freq == 0)
++ rdev->clock.vco_freq = 360000; /* 3.6 GHz */
++
+ return true;
+ }
+
+ return false;
+ }
+
+-union igp_info {
+- struct _ATOM_INTEGRATED_SYSTEM_INFO info;
+- struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;
+- struct _ATOM_INTEGRATED_SYSTEM_INFO_V6 info_6;
+- struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_7 info_7;
+- struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_8 info_8;
+-};
+-
+ bool radeon_atombios_sideport_present(struct radeon_device *rdev)
+ {
+ struct radeon_mode_info *mode_info = &rdev->mode_info;
+diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c
+index d77dd1430d58..b214663b370d 100644
+--- a/drivers/gpu/drm/radeon/radeon_audio.c
++++ b/drivers/gpu/drm/radeon/radeon_audio.c
+@@ -698,26 +698,37 @@ static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
+ {
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
++ struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
+
+ if (!dig || !dig->afmt)
+ return;
+
+- radeon_audio_set_mute(encoder, true);
++ if (!connector)
++ return;
++
++ if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
++ radeon_audio_set_mute(encoder, true);
+
+- radeon_audio_write_speaker_allocation(encoder);
+- radeon_audio_write_sad_regs(encoder);
+- radeon_audio_write_latency_fields(encoder, mode);
+- radeon_audio_set_dto(encoder, mode->clock);
+- radeon_audio_set_vbi_packet(encoder);
+- radeon_hdmi_set_color_depth(encoder);
+- radeon_audio_update_acr(encoder, mode->clock);
+- radeon_audio_set_audio_packet(encoder);
+- radeon_audio_select_pin(encoder);
++ radeon_audio_write_speaker_allocation(encoder);
++ radeon_audio_write_sad_regs(encoder);
++ radeon_audio_write_latency_fields(encoder, mode);
++ radeon_audio_set_dto(encoder, mode->clock);
++ radeon_audio_set_vbi_packet(encoder);
++ radeon_hdmi_set_color_depth(encoder);
++ radeon_audio_update_acr(encoder, mode->clock);
++ radeon_audio_set_audio_packet(encoder);
++ radeon_audio_select_pin(encoder);
+
+- if (radeon_audio_set_avi_packet(encoder, mode) < 0)
+- return;
++ if (radeon_audio_set_avi_packet(encoder, mode) < 0)
++ return;
+
+- radeon_audio_set_mute(encoder, false);
++ radeon_audio_set_mute(encoder, false);
++ } else {
++ radeon_hdmi_set_color_depth(encoder);
++
++ if (radeon_audio_set_avi_packet(encoder, mode) < 0)
++ return;
++ }
+ }
+
+ static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
+@@ -728,28 +739,24 @@ static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+ struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
+- struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+- struct radeon_connector_atom_dig *dig_connector =
+- radeon_connector->con_priv;
+
+- if (!connector)
++ if (!dig || !dig->afmt)
+ return;
+
+- if (!dig || !dig->afmt)
++ if (!connector)
+ return;
+
+- radeon_audio_write_speaker_allocation(encoder);
+- radeon_audio_write_sad_regs(encoder);
+- radeon_audio_write_latency_fields(encoder, mode);
+- if (rdev->clock.dp_extclk || ASIC_IS_DCE5(rdev))
+- radeon_audio_set_dto(encoder, rdev->clock.default_dispclk * 10);
+- else
+- radeon_audio_set_dto(encoder, dig_connector->dp_clock);
+- radeon_audio_set_audio_packet(encoder);
+- radeon_audio_select_pin(encoder);
++ if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
++ radeon_audio_write_speaker_allocation(encoder);
++ radeon_audio_write_sad_regs(encoder);
++ radeon_audio_write_latency_fields(encoder, mode);
++ radeon_audio_set_dto(encoder, rdev->clock.vco_freq * 10);
++ radeon_audio_set_audio_packet(encoder);
++ radeon_audio_select_pin(encoder);
+
+- if (radeon_audio_set_avi_packet(encoder, mode) < 0)
+- return;
++ if (radeon_audio_set_avi_packet(encoder, mode) < 0)
++ return;
++ }
+ }
+
+ void radeon_audio_mode_set(struct drm_encoder *encoder,
+@@ -768,3 +775,15 @@ void radeon_audio_dpms(struct drm_encoder *encoder, int mode)
+ if (radeon_encoder->audio && radeon_encoder->audio->dpms)
+ radeon_encoder->audio->dpms(encoder, mode == DRM_MODE_DPMS_ON);
+ }
++
++unsigned int radeon_audio_decode_dfs_div(unsigned int div)
++{
++ if (div >= 8 && div < 64)
++ return (div - 8) * 25 + 200;
++ else if (div >= 64 && div < 96)
++ return (div - 64) * 50 + 1600;
++ else if (div >= 96 && div < 128)
++ return (div - 96) * 100 + 3200;
++ else
++ return 0;
++}
+diff --git a/drivers/gpu/drm/radeon/radeon_audio.h b/drivers/gpu/drm/radeon/radeon_audio.h
+index 059cc3012062..5c70cceaa4a6 100644
+--- a/drivers/gpu/drm/radeon/radeon_audio.h
++++ b/drivers/gpu/drm/radeon/radeon_audio.h
+@@ -79,5 +79,6 @@ void radeon_audio_fini(struct radeon_device *rdev);
+ void radeon_audio_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode);
+ void radeon_audio_dpms(struct drm_encoder *encoder, int mode);
++unsigned int radeon_audio_decode_dfs_div(unsigned int div);
+
+ #endif
+diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
+index 604c44d88e7a..ccab94ed9d94 100644
+--- a/drivers/gpu/drm/radeon/radeon_device.c
++++ b/drivers/gpu/drm/radeon/radeon_device.c
+@@ -1734,6 +1734,7 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
+ }
+
+ drm_kms_helper_poll_enable(dev);
++ drm_helper_hpd_irq_event(dev);
+
+ /* set the power state here in case we are a PX system or headless */
+ if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
+diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c
+index 42986130cc63..c9ff4cf4c4e7 100644
+--- a/drivers/gpu/drm/radeon/radeon_dp_mst.c
++++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c
+@@ -287,9 +287,9 @@ static struct drm_connector *radeon_dp_add_mst_connector(struct drm_dp_mst_topol
+ drm_mode_connector_set_path_property(connector, pathprop);
+ drm_reinit_primary_mode_group(dev);
+
+- mutex_lock(&dev->mode_config.mutex);
++ drm_modeset_lock_all(dev);
+ radeon_fb_add_connector(rdev, connector);
+- mutex_unlock(&dev->mode_config.mutex);
++ drm_modeset_unlock_all(dev);
+
+ drm_connector_register(connector);
+ return connector;
+@@ -304,12 +304,12 @@ static void radeon_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
+
+ drm_connector_unregister(connector);
+ /* need to nuke the connector */
+- mutex_lock(&dev->mode_config.mutex);
++ drm_modeset_lock_all(dev);
+ /* dpms off */
+ radeon_fb_remove_connector(rdev, connector);
+
+ drm_connector_cleanup(connector);
+- mutex_unlock(&dev->mode_config.mutex);
++ drm_modeset_unlock_all(dev);
+ drm_reinit_primary_mode_group(dev);
+
+
+diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
+index 676362769b8d..741065bd14b3 100644
+--- a/drivers/gpu/drm/radeon/radeon_object.c
++++ b/drivers/gpu/drm/radeon/radeon_object.c
+@@ -33,6 +33,7 @@
+ #include <linux/slab.h>
+ #include <drm/drmP.h>
+ #include <drm/radeon_drm.h>
++#include <drm/drm_cache.h>
+ #include "radeon.h"
+ #include "radeon_trace.h"
+
+@@ -225,7 +226,7 @@ int radeon_bo_create(struct radeon_device *rdev,
+ /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
+ * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
+ */
+- bo->flags &= ~RADEON_GEM_GTT_WC;
++ bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
+ #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
+ /* Don't try to enable write-combining when it can't work, or things
+ * may be slow
+@@ -237,7 +238,13 @@ int radeon_bo_create(struct radeon_device *rdev,
+
+ DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
+ "better performance thanks to write-combining\n");
+- bo->flags &= ~RADEON_GEM_GTT_WC;
++ bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
++#else
++ /* For architectures that don't support WC memory,
++ * mask out the WC flag from the BO
++ */
++ if (!drm_arch_can_wc_memory())
++ bo->flags &= ~RADEON_GEM_GTT_WC;
+ #endif
+
+ radeon_ttm_placement_from_domain(bo, domain);
+diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
+index 9c3377ca17b7..8ec4e4591756 100644
+--- a/drivers/gpu/drm/radeon/radeon_vm.c
++++ b/drivers/gpu/drm/radeon/radeon_vm.c
+@@ -456,15 +456,15 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
+
+ if (soffset) {
+ /* make sure object fit at this offset */
+- eoffset = soffset + size;
++ eoffset = soffset + size - 1;
+ if (soffset >= eoffset) {
+ r = -EINVAL;
+ goto error_unreserve;
+ }
+
+ last_pfn = eoffset / RADEON_GPU_PAGE_SIZE;
+- if (last_pfn > rdev->vm_manager.max_pfn) {
+- dev_err(rdev->dev, "va above limit (0x%08X > 0x%08X)\n",
++ if (last_pfn >= rdev->vm_manager.max_pfn) {
++ dev_err(rdev->dev, "va above limit (0x%08X >= 0x%08X)\n",
+ last_pfn, rdev->vm_manager.max_pfn);
+ r = -EINVAL;
+ goto error_unreserve;
+@@ -479,7 +479,7 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
+ eoffset /= RADEON_GPU_PAGE_SIZE;
+ if (soffset || eoffset) {
+ struct interval_tree_node *it;
+- it = interval_tree_iter_first(&vm->va, soffset, eoffset - 1);
++ it = interval_tree_iter_first(&vm->va, soffset, eoffset);
+ if (it && it != &bo_va->it) {
+ struct radeon_bo_va *tmp;
+ tmp = container_of(it, struct radeon_bo_va, it);
+@@ -522,7 +522,7 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
+
+ if (soffset || eoffset) {
+ bo_va->it.start = soffset;
+- bo_va->it.last = eoffset - 1;
++ bo_va->it.last = eoffset;
+ interval_tree_insert(&bo_va->it, &vm->va);
+ }
+
+@@ -891,7 +891,7 @@ static void radeon_vm_fence_pts(struct radeon_vm *vm,
+ unsigned i;
+
+ start >>= radeon_vm_block_size;
+- end >>= radeon_vm_block_size;
++ end = (end - 1) >> radeon_vm_block_size;
+
+ for (i = start; i <= end; ++i)
+ radeon_bo_fence(vm->page_tables[i].bo, fence, true);
+diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h
+index 3afac3013983..c126f6bfbed1 100644
+--- a/drivers/gpu/drm/radeon/sid.h
++++ b/drivers/gpu/drm/radeon/sid.h
+@@ -915,6 +915,11 @@
+ #define DCCG_AUDIO_DTO1_PHASE 0x05c0
+ #define DCCG_AUDIO_DTO1_MODULE 0x05c4
+
++#define DENTIST_DISPCLK_CNTL 0x0490
++# define DENTIST_DPREFCLK_WDIVIDER(x) (((x) & 0x7f) << 24)
++# define DENTIST_DPREFCLK_WDIVIDER_MASK (0x7f << 24)
++# define DENTIST_DPREFCLK_WDIVIDER_SHIFT 24
++
+ #define AFMT_AUDIO_SRC_CONTROL 0x713c
+ #define AFMT_AUDIO_SRC_SELECT(x) (((x) & 7) << 0)
+ /* AFMT_AUDIO_SRC_SELECT
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+index 15a8d7746fd2..2aa0e927d490 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+@@ -25,6 +25,7 @@
+ *
+ **************************************************************************/
+ #include <linux/module.h>
++#include <linux/console.h>
+
+ #include <drm/drmP.h>
+ #include "vmwgfx_drv.h"
+@@ -1447,6 +1448,12 @@ static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ static int __init vmwgfx_init(void)
+ {
+ int ret;
++
++#ifdef CONFIG_VGA_CONSOLE
++ if (vgacon_text_force())
++ return -EINVAL;
++#endif
++
+ ret = drm_pci_init(&driver, &vmw_pci_driver);
+ if (ret)
+ DRM_ERROR("Failed initializing DRM.\n");
+diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
+index 894531d315b8..046144fc5aff 100644
+--- a/drivers/hwtracing/coresight/coresight.c
++++ b/drivers/hwtracing/coresight/coresight.c
+@@ -543,7 +543,7 @@ static int coresight_name_match(struct device *dev, void *data)
+ to_match = data;
+ i_csdev = to_coresight_device(dev);
+
+- if (!strcmp(to_match, dev_name(&i_csdev->dev)))
++ if (to_match && !strcmp(to_match, dev_name(&i_csdev->dev)))
+ return 1;
+
+ return 0;
+diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c
+index 4fa88ba2963e..131994382b22 100644
+--- a/drivers/infiniband/hw/qib/qib_qp.c
++++ b/drivers/infiniband/hw/qib/qib_qp.c
+@@ -100,9 +100,10 @@ static u32 credit_table[31] = {
+ 32768 /* 1E */
+ };
+
+-static void get_map_page(struct qib_qpn_table *qpt, struct qpn_map *map)
++static void get_map_page(struct qib_qpn_table *qpt, struct qpn_map *map,
++ gfp_t gfp)
+ {
+- unsigned long page = get_zeroed_page(GFP_KERNEL);
++ unsigned long page = get_zeroed_page(gfp);
+
+ /*
+ * Free the page if someone raced with us installing it.
+@@ -121,7 +122,7 @@ static void get_map_page(struct qib_qpn_table *qpt, struct qpn_map *map)
+ * zero/one for QP type IB_QPT_SMI/IB_QPT_GSI.
+ */
+ static int alloc_qpn(struct qib_devdata *dd, struct qib_qpn_table *qpt,
+- enum ib_qp_type type, u8 port)
++ enum ib_qp_type type, u8 port, gfp_t gfp)
+ {
+ u32 i, offset, max_scan, qpn;
+ struct qpn_map *map;
+@@ -151,7 +152,7 @@ static int alloc_qpn(struct qib_devdata *dd, struct qib_qpn_table *qpt,
+ max_scan = qpt->nmaps - !offset;
+ for (i = 0;;) {
+ if (unlikely(!map->page)) {
+- get_map_page(qpt, map);
++ get_map_page(qpt, map, gfp);
+ if (unlikely(!map->page))
+ break;
+ }
+@@ -983,13 +984,21 @@ struct ib_qp *qib_create_qp(struct ib_pd *ibpd,
+ size_t sz;
+ size_t sg_list_sz;
+ struct ib_qp *ret;
++ gfp_t gfp;
++
+
+ if (init_attr->cap.max_send_sge > ib_qib_max_sges ||
+ init_attr->cap.max_send_wr > ib_qib_max_qp_wrs ||
+- init_attr->create_flags) {
+- ret = ERR_PTR(-EINVAL);
+- goto bail;
+- }
++ init_attr->create_flags & ~(IB_QP_CREATE_USE_GFP_NOIO))
++ return ERR_PTR(-EINVAL);
++
++ /* GFP_NOIO is applicable in RC QPs only */
++ if (init_attr->create_flags & IB_QP_CREATE_USE_GFP_NOIO &&
++ init_attr->qp_type != IB_QPT_RC)
++ return ERR_PTR(-EINVAL);
++
++ gfp = init_attr->create_flags & IB_QP_CREATE_USE_GFP_NOIO ?
++ GFP_NOIO : GFP_KERNEL;
+
+ /* Check receive queue parameters if no SRQ is specified. */
+ if (!init_attr->srq) {
+@@ -1021,7 +1030,8 @@ struct ib_qp *qib_create_qp(struct ib_pd *ibpd,
+ sz = sizeof(struct qib_sge) *
+ init_attr->cap.max_send_sge +
+ sizeof(struct qib_swqe);
+- swq = vmalloc((init_attr->cap.max_send_wr + 1) * sz);
++ swq = __vmalloc((init_attr->cap.max_send_wr + 1) * sz,
++ gfp, PAGE_KERNEL);
+ if (swq == NULL) {
+ ret = ERR_PTR(-ENOMEM);
+ goto bail;
+@@ -1037,13 +1047,13 @@ struct ib_qp *qib_create_qp(struct ib_pd *ibpd,
+ } else if (init_attr->cap.max_recv_sge > 1)
+ sg_list_sz = sizeof(*qp->r_sg_list) *
+ (init_attr->cap.max_recv_sge - 1);
+- qp = kzalloc(sz + sg_list_sz, GFP_KERNEL);
++ qp = kzalloc(sz + sg_list_sz, gfp);
+ if (!qp) {
+ ret = ERR_PTR(-ENOMEM);
+ goto bail_swq;
+ }
+ RCU_INIT_POINTER(qp->next, NULL);
+- qp->s_hdr = kzalloc(sizeof(*qp->s_hdr), GFP_KERNEL);
++ qp->s_hdr = kzalloc(sizeof(*qp->s_hdr), gfp);
+ if (!qp->s_hdr) {
+ ret = ERR_PTR(-ENOMEM);
+ goto bail_qp;
+@@ -1058,8 +1068,16 @@ struct ib_qp *qib_create_qp(struct ib_pd *ibpd,
+ qp->r_rq.max_sge = init_attr->cap.max_recv_sge;
+ sz = (sizeof(struct ib_sge) * qp->r_rq.max_sge) +
+ sizeof(struct qib_rwqe);
+- qp->r_rq.wq = vmalloc_user(sizeof(struct qib_rwq) +
+- qp->r_rq.size * sz);
++ if (gfp != GFP_NOIO)
++ qp->r_rq.wq = vmalloc_user(
++ sizeof(struct qib_rwq) +
++ qp->r_rq.size * sz);
++ else
++ qp->r_rq.wq = __vmalloc(
++ sizeof(struct qib_rwq) +
++ qp->r_rq.size * sz,
++ gfp, PAGE_KERNEL);
++
+ if (!qp->r_rq.wq) {
+ ret = ERR_PTR(-ENOMEM);
+ goto bail_qp;
+@@ -1090,7 +1108,7 @@ struct ib_qp *qib_create_qp(struct ib_pd *ibpd,
+ dev = to_idev(ibpd->device);
+ dd = dd_from_dev(dev);
+ err = alloc_qpn(dd, &dev->qpn_table, init_attr->qp_type,
+- init_attr->port_num);
++ init_attr->port_num, gfp);
+ if (err < 0) {
+ ret = ERR_PTR(err);
+ vfree(qp->r_rq.wq);
+diff --git a/drivers/infiniband/hw/qib/qib_verbs_mcast.c b/drivers/infiniband/hw/qib/qib_verbs_mcast.c
+index f8ea069a3eaf..b2fb5286dbd9 100644
+--- a/drivers/infiniband/hw/qib/qib_verbs_mcast.c
++++ b/drivers/infiniband/hw/qib/qib_verbs_mcast.c
+@@ -286,15 +286,13 @@ int qib_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+ struct qib_ibdev *dev = to_idev(ibqp->device);
+ struct qib_ibport *ibp = to_iport(ibqp->device, qp->port_num);
+ struct qib_mcast *mcast = NULL;
+- struct qib_mcast_qp *p, *tmp;
++ struct qib_mcast_qp *p, *tmp, *delp = NULL;
+ struct rb_node *n;
+ int last = 0;
+ int ret;
+
+- if (ibqp->qp_num <= 1 || qp->state == IB_QPS_RESET) {
+- ret = -EINVAL;
+- goto bail;
+- }
++ if (ibqp->qp_num <= 1 || qp->state == IB_QPS_RESET)
++ return -EINVAL;
+
+ spin_lock_irq(&ibp->lock);
+
+@@ -303,8 +301,7 @@ int qib_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+ while (1) {
+ if (n == NULL) {
+ spin_unlock_irq(&ibp->lock);
+- ret = -EINVAL;
+- goto bail;
++ return -EINVAL;
+ }
+
+ mcast = rb_entry(n, struct qib_mcast, rb_node);
+@@ -328,6 +325,7 @@ int qib_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+ */
+ list_del_rcu(&p->list);
+ mcast->n_attached--;
++ delp = p;
+
+ /* If this was the last attached QP, remove the GID too. */
+ if (list_empty(&mcast->qp_list)) {
+@@ -338,15 +336,16 @@ int qib_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+ }
+
+ spin_unlock_irq(&ibp->lock);
++ /* QP not attached */
++ if (!delp)
++ return -EINVAL;
++ /*
++ * Wait for any list walkers to finish before freeing the
++ * list element.
++ */
++ wait_event(mcast->wait, atomic_read(&mcast->refcount) <= 1);
++ qib_mcast_qp_free(delp);
+
+- if (p) {
+- /*
+- * Wait for any list walkers to finish before freeing the
+- * list element.
+- */
+- wait_event(mcast->wait, atomic_read(&mcast->refcount) <= 1);
+- qib_mcast_qp_free(p);
+- }
+ if (last) {
+ atomic_dec(&mcast->refcount);
+ wait_event(mcast->wait, !atomic_read(&mcast->refcount));
+@@ -355,11 +354,7 @@ int qib_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+ dev->n_mcast_grps_allocated--;
+ spin_unlock_irq(&dev->n_mcast_grps_lock);
+ }
+-
+- ret = 0;
+-
+-bail:
+- return ret;
++ return 0;
+ }
+
+ int qib_mcast_tree_empty(struct qib_ibport *ibp)
+diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
+index ce3d40004458..0f5b400706d7 100644
+--- a/drivers/input/mouse/elantech.c
++++ b/drivers/input/mouse/elantech.c
+@@ -1214,7 +1214,7 @@ static int elantech_set_input_params(struct psmouse *psmouse)
+ input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2,
+ ETP_WMAX_V2, 0, 0);
+ }
+- input_mt_init_slots(dev, 2, 0);
++ input_mt_init_slots(dev, 2, INPUT_MT_SEMI_MT);
+ input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0);
+ input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0);
+ break;
+diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
+index c11556563ef0..68f5f4a0f1e7 100644
+--- a/drivers/input/serio/i8042-x86ia64io.h
++++ b/drivers/input/serio/i8042-x86ia64io.h
+@@ -258,6 +258,13 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
+ },
+ },
+ {
++ /* Fujitsu Lifebook U745 */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
++ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U745"),
++ },
++ },
++ {
+ /* Fujitsu T70H */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
+index e29d5d7fe220..937832cfa48e 100644
+--- a/drivers/iommu/io-pgtable-arm.c
++++ b/drivers/iommu/io-pgtable-arm.c
+@@ -341,17 +341,18 @@ static void __arm_lpae_free_pgtable(struct arm_lpae_io_pgtable *data, int lvl,
+ arm_lpae_iopte *start, *end;
+ unsigned long table_size;
+
+- /* Only leaf entries at the last level */
+- if (lvl == ARM_LPAE_MAX_LEVELS - 1)
+- return;
+-
+ if (lvl == ARM_LPAE_START_LVL(data))
+ table_size = data->pgd_size;
+ else
+ table_size = 1UL << data->pg_shift;
+
+ start = ptep;
+- end = (void *)ptep + table_size;
++
++ /* Only leaf entries at the last level */
++ if (lvl == ARM_LPAE_MAX_LEVELS - 1)
++ end = ptep;
++ else
++ end = (void *)ptep + table_size;
+
+ while (ptep != end) {
+ arm_lpae_iopte pte = *ptep++;
+diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c
+index 63cd031b2c28..869d01dd4063 100644
+--- a/drivers/irqchip/irq-atmel-aic-common.c
++++ b/drivers/irqchip/irq-atmel-aic-common.c
+@@ -86,7 +86,7 @@ int aic_common_set_priority(int priority, unsigned *val)
+ priority > AT91_AIC_IRQ_MAX_PRIORITY)
+ return -EINVAL;
+
+- *val &= AT91_AIC_PRIOR;
++ *val &= ~AT91_AIC_PRIOR;
+ *val |= priority;
+
+ return 0;
+diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
+index 00cde40db572..43829d9493f7 100644
+--- a/drivers/md/bcache/btree.c
++++ b/drivers/md/bcache/btree.c
+@@ -1741,6 +1741,7 @@ static void bch_btree_gc(struct cache_set *c)
+ do {
+ ret = btree_root(gc_root, c, &op, &writes, &stats);
+ closure_sync(&writes);
++ cond_resched();
+
+ if (ret && ret != -EAGAIN)
+ pr_warn("gc failed!");
+@@ -2162,8 +2163,10 @@ int bch_btree_insert_check_key(struct btree *b, struct btree_op *op,
+ rw_lock(true, b, b->level);
+
+ if (b->key.ptr[0] != btree_ptr ||
+- b->seq != seq + 1)
++ b->seq != seq + 1) {
++ op->lock = b->level;
+ goto out;
++ }
+ }
+
+ SET_KEY_PTRS(check_key, 1);
+diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
+index 4dd2bb7167f0..42522c8f13c6 100644
+--- a/drivers/md/bcache/super.c
++++ b/drivers/md/bcache/super.c
+@@ -708,6 +708,8 @@ static void bcache_device_link(struct bcache_device *d, struct cache_set *c,
+ WARN(sysfs_create_link(&d->kobj, &c->kobj, "cache") ||
+ sysfs_create_link(&c->kobj, &d->kobj, d->name),
+ "Couldn't create device <-> cache set symlinks");
++
++ clear_bit(BCACHE_DEV_UNLINK_DONE, &d->flags);
+ }
+
+ static void bcache_device_detach(struct bcache_device *d)
+@@ -878,8 +880,11 @@ void bch_cached_dev_run(struct cached_dev *dc)
+ buf[SB_LABEL_SIZE] = '\0';
+ env[2] = kasprintf(GFP_KERNEL, "CACHED_LABEL=%s", buf);
+
+- if (atomic_xchg(&dc->running, 1))
++ if (atomic_xchg(&dc->running, 1)) {
++ kfree(env[1]);
++ kfree(env[2]);
+ return;
++ }
+
+ if (!d->c &&
+ BDEV_STATE(&dc->sb) != BDEV_STATE_NONE) {
+@@ -1967,6 +1972,8 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
+ else
+ err = "device busy";
+ mutex_unlock(&bch_register_lock);
++ if (attr == &ksysfs_register_quiet)
++ goto out;
+ }
+ goto err;
+ }
+@@ -2005,8 +2012,7 @@ out:
+ err_close:
+ blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ err:
+- if (attr != &ksysfs_register_quiet)
+- pr_info("error opening %s: %s", path, err);
++ pr_info("error opening %s: %s", path, err);
+ ret = -EINVAL;
+ goto out;
+ }
+@@ -2100,8 +2106,10 @@ static int __init bcache_init(void)
+ closure_debug_init();
+
+ bcache_major = register_blkdev(0, "bcache");
+- if (bcache_major < 0)
++ if (bcache_major < 0) {
++ unregister_reboot_notifier(&reboot);
+ return bcache_major;
++ }
+
+ if (!(bcache_wq = create_workqueue("bcache")) ||
+ !(bcache_kobj = kobject_create_and_add("bcache", fs_kobj)) ||
+diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
+index f1986bcd1bf0..540256a0df4f 100644
+--- a/drivers/md/bcache/writeback.c
++++ b/drivers/md/bcache/writeback.c
+@@ -323,6 +323,10 @@ void bcache_dev_sectors_dirty_add(struct cache_set *c, unsigned inode,
+
+ static bool dirty_pred(struct keybuf *buf, struct bkey *k)
+ {
++ struct cached_dev *dc = container_of(buf, struct cached_dev, writeback_keys);
++
++ BUG_ON(KEY_INODE(k) != dc->disk.id);
++
+ return KEY_DIRTY(k);
+ }
+
+@@ -372,11 +376,24 @@ next:
+ }
+ }
+
++/*
++ * Returns true if we scanned the entire disk
++ */
+ static bool refill_dirty(struct cached_dev *dc)
+ {
+ struct keybuf *buf = &dc->writeback_keys;
++ struct bkey start = KEY(dc->disk.id, 0, 0);
+ struct bkey end = KEY(dc->disk.id, MAX_KEY_OFFSET, 0);
+- bool searched_from_start = false;
++ struct bkey start_pos;
++
++ /*
++ * make sure keybuf pos is inside the range for this disk - at bringup
++ * we might not be attached yet so this disk's inode nr isn't
++ * initialized then
++ */
++ if (bkey_cmp(&buf->last_scanned, &start) < 0 ||
++ bkey_cmp(&buf->last_scanned, &end) > 0)
++ buf->last_scanned = start;
+
+ if (dc->partial_stripes_expensive) {
+ refill_full_stripes(dc);
+@@ -384,14 +401,20 @@ static bool refill_dirty(struct cached_dev *dc)
+ return false;
+ }
+
+- if (bkey_cmp(&buf->last_scanned, &end) >= 0) {
+- buf->last_scanned = KEY(dc->disk.id, 0, 0);
+- searched_from_start = true;
+- }
+-
++ start_pos = buf->last_scanned;
+ bch_refill_keybuf(dc->disk.c, buf, &end, dirty_pred);
+
+- return bkey_cmp(&buf->last_scanned, &end) >= 0 && searched_from_start;
++ if (bkey_cmp(&buf->last_scanned, &end) < 0)
++ return false;
++
++ /*
++ * If we get to the end start scanning again from the beginning, and
++ * only scan up to where we initially started scanning from:
++ */
++ buf->last_scanned = start;
++ bch_refill_keybuf(dc->disk.c, buf, &start_pos, dirty_pred);
++
++ return bkey_cmp(&buf->last_scanned, &start_pos) >= 0;
+ }
+
+ static int bch_writeback_thread(void *arg)
+diff --git a/drivers/md/bcache/writeback.h b/drivers/md/bcache/writeback.h
+index 0a9dab187b79..073a042aed24 100644
+--- a/drivers/md/bcache/writeback.h
++++ b/drivers/md/bcache/writeback.h
+@@ -63,7 +63,8 @@ static inline bool should_writeback(struct cached_dev *dc, struct bio *bio,
+
+ static inline void bch_writeback_queue(struct cached_dev *dc)
+ {
+- wake_up_process(dc->writeback_thread);
++ if (!IS_ERR_OR_NULL(dc->writeback_thread))
++ wake_up_process(dc->writeback_thread);
+ }
+
+ static inline void bch_writeback_add(struct cached_dev *dc)
+diff --git a/drivers/md/dm-exception-store.h b/drivers/md/dm-exception-store.h
+index 0b2536247cf5..84e27708ad97 100644
+--- a/drivers/md/dm-exception-store.h
++++ b/drivers/md/dm-exception-store.h
+@@ -70,7 +70,7 @@ struct dm_exception_store_type {
+ * Update the metadata with this exception.
+ */
+ void (*commit_exception) (struct dm_exception_store *store,
+- struct dm_exception *e,
++ struct dm_exception *e, int valid,
+ void (*callback) (void *, int success),
+ void *callback_context);
+
+diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
+index 808b8419bc48..9feb894e5565 100644
+--- a/drivers/md/dm-snap-persistent.c
++++ b/drivers/md/dm-snap-persistent.c
+@@ -694,7 +694,7 @@ static int persistent_prepare_exception(struct dm_exception_store *store,
+ }
+
+ static void persistent_commit_exception(struct dm_exception_store *store,
+- struct dm_exception *e,
++ struct dm_exception *e, int valid,
+ void (*callback) (void *, int success),
+ void *callback_context)
+ {
+@@ -703,6 +703,9 @@ static void persistent_commit_exception(struct dm_exception_store *store,
+ struct core_exception ce;
+ struct commit_callback *cb;
+
++ if (!valid)
++ ps->valid = 0;
++
+ ce.old_chunk = e->old_chunk;
+ ce.new_chunk = e->new_chunk;
+ write_exception(ps, ps->current_committed++, &ce);
+diff --git a/drivers/md/dm-snap-transient.c b/drivers/md/dm-snap-transient.c
+index 1ce9a2586e41..31439d53cf7e 100644
+--- a/drivers/md/dm-snap-transient.c
++++ b/drivers/md/dm-snap-transient.c
+@@ -52,12 +52,12 @@ static int transient_prepare_exception(struct dm_exception_store *store,
+ }
+
+ static void transient_commit_exception(struct dm_exception_store *store,
+- struct dm_exception *e,
++ struct dm_exception *e, int valid,
+ void (*callback) (void *, int success),
+ void *callback_context)
+ {
+ /* Just succeed */
+- callback(callback_context, 1);
++ callback(callback_context, valid);
+ }
+
+ static void transient_usage(struct dm_exception_store *store,
+diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
+index f83a0f3fc365..11ec9d2a27df 100644
+--- a/drivers/md/dm-snap.c
++++ b/drivers/md/dm-snap.c
+@@ -1428,8 +1428,9 @@ static void __invalidate_snapshot(struct dm_snapshot *s, int err)
+ dm_table_event(s->ti->table);
+ }
+
+-static void pending_complete(struct dm_snap_pending_exception *pe, int success)
++static void pending_complete(void *context, int success)
+ {
++ struct dm_snap_pending_exception *pe = context;
+ struct dm_exception *e;
+ struct dm_snapshot *s = pe->snap;
+ struct bio *origin_bios = NULL;
+@@ -1500,24 +1501,13 @@ out:
+ free_pending_exception(pe);
+ }
+
+-static void commit_callback(void *context, int success)
+-{
+- struct dm_snap_pending_exception *pe = context;
+-
+- pending_complete(pe, success);
+-}
+-
+ static void complete_exception(struct dm_snap_pending_exception *pe)
+ {
+ struct dm_snapshot *s = pe->snap;
+
+- if (unlikely(pe->copy_error))
+- pending_complete(pe, 0);
+-
+- else
+- /* Update the metadata if we are persistent */
+- s->store->type->commit_exception(s->store, &pe->e,
+- commit_callback, pe);
++ /* Update the metadata if we are persistent */
++ s->store->type->commit_exception(s->store, &pe->e, !pe->copy_error,
++ pending_complete, pe);
+ }
+
+ /*
+diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
+index 7073b22d4cb4..cb58bb318782 100644
+--- a/drivers/md/dm-thin.c
++++ b/drivers/md/dm-thin.c
+@@ -3210,8 +3210,8 @@ static void pool_postsuspend(struct dm_target *ti)
+ struct pool_c *pt = ti->private;
+ struct pool *pool = pt->pool;
+
+- cancel_delayed_work(&pool->waker);
+- cancel_delayed_work(&pool->no_space_timeout);
++ cancel_delayed_work_sync(&pool->waker);
++ cancel_delayed_work_sync(&pool->no_space_timeout);
+ flush_workqueue(pool->wq);
+ (void) commit(pool);
+ }
+diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
+index 882ca417f328..3ab874703d11 100644
+--- a/drivers/media/dvb-core/dvb_frontend.c
++++ b/drivers/media/dvb-core/dvb_frontend.c
+@@ -2333,9 +2333,9 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
+ dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
+ __func__, c->delivery_system, fe->ops.info.type);
+
+- /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
+- * do it, it is done for it. */
+- info->caps |= FE_CAN_INVERSION_AUTO;
++ /* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */
++ if (!(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT))
++ info->caps |= FE_CAN_INVERSION_AUTO;
+ err = 0;
+ break;
+ }
+diff --git a/drivers/media/dvb-frontends/tda1004x.c b/drivers/media/dvb-frontends/tda1004x.c
+index a2631be7ffac..08e0f0dd8728 100644
+--- a/drivers/media/dvb-frontends/tda1004x.c
++++ b/drivers/media/dvb-frontends/tda1004x.c
+@@ -903,9 +903,18 @@ static int tda1004x_get_fe(struct dvb_frontend *fe)
+ {
+ struct dtv_frontend_properties *fe_params = &fe->dtv_property_cache;
+ struct tda1004x_state* state = fe->demodulator_priv;
++ int status;
+
+ dprintk("%s\n", __func__);
+
++ status = tda1004x_read_byte(state, TDA1004X_STATUS_CD);
++ if (status == -1)
++ return -EIO;
++
++ /* Only update the properties cache if device is locked */
++ if (!(status & 8))
++ return 0;
++
+ // inversion status
+ fe_params->inversion = INVERSION_OFF;
+ if (tda1004x_read_byte(state, TDA1004X_CONFC1) & 0x20)
+diff --git a/drivers/media/pci/saa7134/saa7134-alsa.c b/drivers/media/pci/saa7134/saa7134-alsa.c
+index ac3cd74e824e..067db727e685 100644
+--- a/drivers/media/pci/saa7134/saa7134-alsa.c
++++ b/drivers/media/pci/saa7134/saa7134-alsa.c
+@@ -1218,6 +1218,8 @@ static int alsa_device_init(struct saa7134_dev *dev)
+
+ static int alsa_device_exit(struct saa7134_dev *dev)
+ {
++ if (!snd_saa7134_cards[dev->nr])
++ return 1;
+
+ snd_card_free(snd_saa7134_cards[dev->nr]);
+ snd_saa7134_cards[dev->nr] = NULL;
+@@ -1267,7 +1269,8 @@ static void saa7134_alsa_exit(void)
+ int idx;
+
+ for (idx = 0; idx < SNDRV_CARDS; idx++) {
+- snd_card_free(snd_saa7134_cards[idx]);
++ if (snd_saa7134_cards[idx])
++ snd_card_free(snd_saa7134_cards[idx]);
+ }
+
+ saa7134_dmasound_init = NULL;
+diff --git a/drivers/media/rc/sunxi-cir.c b/drivers/media/rc/sunxi-cir.c
+index 7830aef3db45..40f77685cc4a 100644
+--- a/drivers/media/rc/sunxi-cir.c
++++ b/drivers/media/rc/sunxi-cir.c
+@@ -153,6 +153,8 @@ static int sunxi_ir_probe(struct platform_device *pdev)
+ if (!ir)
+ return -ENOMEM;
+
++ spin_lock_init(&ir->ir_lock);
++
+ if (of_device_is_compatible(dn, "allwinner,sun5i-a13-ir"))
+ ir->fifo_size = 64;
+ else
+diff --git a/drivers/media/usb/gspca/ov534.c b/drivers/media/usb/gspca/ov534.c
+index 146071b8e116..bfff1d1c70ab 100644
+--- a/drivers/media/usb/gspca/ov534.c
++++ b/drivers/media/usb/gspca/ov534.c
+@@ -1491,8 +1491,13 @@ static void sd_set_streamparm(struct gspca_dev *gspca_dev,
+ struct v4l2_fract *tpf = &cp->timeperframe;
+ struct sd *sd = (struct sd *) gspca_dev;
+
+- /* Set requested framerate */
+- sd->frame_rate = tpf->denominator / tpf->numerator;
++ if (tpf->numerator == 0 || tpf->denominator == 0)
++ /* Set default framerate */
++ sd->frame_rate = 30;
++ else
++ /* Set requested framerate */
++ sd->frame_rate = tpf->denominator / tpf->numerator;
++
+ if (gspca_dev->streaming)
+ set_frame_rate(gspca_dev);
+
+diff --git a/drivers/media/usb/gspca/topro.c b/drivers/media/usb/gspca/topro.c
+index c70ff406b07a..c028a5c2438e 100644
+--- a/drivers/media/usb/gspca/topro.c
++++ b/drivers/media/usb/gspca/topro.c
+@@ -4802,7 +4802,11 @@ static void sd_set_streamparm(struct gspca_dev *gspca_dev,
+ struct v4l2_fract *tpf = &cp->timeperframe;
+ int fr, i;
+
+- sd->framerate = tpf->denominator / tpf->numerator;
++ if (tpf->numerator == 0 || tpf->denominator == 0)
++ sd->framerate = 30;
++ else
++ sd->framerate = tpf->denominator / tpf->numerator;
++
+ if (gspca_dev->streaming)
+ setframerate(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->exposure));
+
+diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
+index cf9d644a8aff..472eaad6fb78 100644
+--- a/drivers/media/v4l2-core/videobuf2-core.c
++++ b/drivers/media/v4l2-core/videobuf2-core.c
+@@ -2662,10 +2662,10 @@ unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait)
+ return res | POLLERR;
+
+ /*
+- * For output streams you can write as long as there are fewer buffers
+- * queued than there are buffers available.
++ * For output streams you can call write() as long as there are fewer
++ * buffers queued than there are buffers available.
+ */
+- if (V4L2_TYPE_IS_OUTPUT(q->type) && q->queued_count < q->num_buffers)
++ if (V4L2_TYPE_IS_OUTPUT(q->type) && q->fileio && q->queued_count < q->num_buffers)
+ return res | POLLOUT | POLLWRNORM;
+
+ if (list_empty(&q->done_list))
+diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
+index 31a9ef256d06..ce3044883a42 100644
+--- a/drivers/mmc/core/sd.c
++++ b/drivers/mmc/core/sd.c
+@@ -661,9 +661,25 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card)
+ * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
+ */
+ if (!mmc_host_is_spi(card->host) &&
+- (card->sd_bus_speed == UHS_SDR50_BUS_SPEED ||
+- card->sd_bus_speed == UHS_SDR104_BUS_SPEED))
++ (card->host->ios.timing == MMC_TIMING_UHS_SDR50 ||
++ card->host->ios.timing == MMC_TIMING_UHS_DDR50 ||
++ card->host->ios.timing == MMC_TIMING_UHS_SDR104)) {
+ err = mmc_execute_tuning(card);
++
++ /*
++ * As SD Specifications Part1 Physical Layer Specification
++ * Version 3.01 says, CMD19 tuning is available for unlocked
++ * cards in transfer state of 1.8V signaling mode. The small
++ * difference between v3.00 and 3.01 spec means that CMD19
++ * tuning is also available for DDR50 mode.
++ */
++ if (err && card->host->ios.timing == MMC_TIMING_UHS_DDR50) {
++ pr_warn("%s: ddr50 tuning failed\n",
++ mmc_hostname(card->host));
++ err = 0;
++ }
++ }
++
+ out:
+ kfree(status);
+
+diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
+index 5bc6c7dbbd60..941beb3b5fa2 100644
+--- a/drivers/mmc/core/sdio.c
++++ b/drivers/mmc/core/sdio.c
+@@ -566,8 +566,8 @@ static int mmc_sdio_init_uhs_card(struct mmc_card *card)
+ * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
+ */
+ if (!mmc_host_is_spi(card->host) &&
+- ((card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50) ||
+- (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)))
++ ((card->host->ios.timing == MMC_TIMING_UHS_SDR50) ||
++ (card->host->ios.timing == MMC_TIMING_UHS_SDR104)))
+ err = mmc_execute_tuning(card);
+ out:
+ return err;
+@@ -661,7 +661,7 @@ try_again:
+ */
+ if (!powered_resume && (rocr & ocr & R4_18V_PRESENT)) {
+ err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180,
+- ocr);
++ ocr_card);
+ if (err == -EAGAIN) {
+ sdio_reset(host);
+ mmc_go_idle(host);
+diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
+index fb266745f824..acece3299756 100644
+--- a/drivers/mmc/host/mmci.c
++++ b/drivers/mmc/host/mmci.c
+@@ -1886,7 +1886,7 @@ static struct amba_id mmci_ids[] = {
+ {
+ .id = 0x00280180,
+ .mask = 0x00ffffff,
+- .data = &variant_u300,
++ .data = &variant_nomadik,
+ },
+ {
+ .id = 0x00480180,
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index cbaf3df3ebd9..f47c4a8370be 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -555,9 +555,12 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
+
+ BUG_ON(len > 65536);
+
+- /* tran, valid */
+- sdhci_adma_write_desc(host, desc, addr, len, ADMA2_TRAN_VALID);
+- desc += host->desc_sz;
++ if (len) {
++ /* tran, valid */
++ sdhci_adma_write_desc(host, desc, addr, len,
++ ADMA2_TRAN_VALID);
++ desc += host->desc_sz;
++ }
+
+ /*
+ * If this triggers then we have a calculation bug
+@@ -2790,7 +2793,7 @@ static int sdhci_runtime_pm_put(struct sdhci_host *host)
+
+ static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
+ {
+- if (host->runtime_suspended || host->bus_on)
++ if (host->bus_on)
+ return;
+ host->bus_on = true;
+ pm_runtime_get_noresume(host->mmc->parent);
+@@ -2798,7 +2801,7 @@ static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
+
+ static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
+ {
+- if (host->runtime_suspended || !host->bus_on)
++ if (!host->bus_on)
+ return;
+ host->bus_on = false;
+ pm_runtime_put_noidle(host->mmc->parent);
+diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+new file mode 100644
+index 000000000000..d60a467a983c
+--- /dev/null
++++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+@@ -0,0 +1,2717 @@
++/******************************************************************************
++ *
++ * This file is provided under a dual BSD/GPLv2 license. When using or
++ * redistributing this file, you may do so under either license.
++ *
++ * GPL LICENSE SUMMARY
++ *
++ * Copyright(c) 2007 - 2015 Intel Corporation. All rights reserved.
++ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
++ * Copyright(c) 2016 Intel Deutschland GmbH
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of version 2 of the GNU General Public License as
++ * published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ * General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
++ * USA
++ *
++ * The full GNU General Public License is included in this distribution
++ * in the file called COPYING.
++ *
++ * Contact Information:
++ * Intel Linux Wireless <linuxwifi@intel.com>
++ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
++ *
++ * BSD LICENSE
++ *
++ * Copyright(c) 2005 - 2015 Intel Corporation. All rights reserved.
++ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
++ * Copyright(c) 2016 Intel Deutschland GmbH
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ *
++ * * Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ * * Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in
++ * the documentation and/or other materials provided with the
++ * distribution.
++ * * Neither the name Intel Corporation nor the names of its
++ * contributors may be used to endorse or promote products derived
++ * from this software without specific prior written permission.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
++ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
++ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
++ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
++ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
++ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
++ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ *
++ *****************************************************************************/
++#include <linux/pci.h>
++#include <linux/pci-aspm.h>
++#include <linux/interrupt.h>
++#include <linux/debugfs.h>
++#include <linux/sched.h>
++#include <linux/bitops.h>
++#include <linux/gfp.h>
++#include <linux/vmalloc.h>
++
++#include "iwl-drv.h"
++#include "iwl-trans.h"
++#include "iwl-csr.h"
++#include "iwl-prph.h"
++#include "iwl-scd.h"
++#include "iwl-agn-hw.h"
++#include "iwl-fw-error-dump.h"
++#include "internal.h"
++#include "iwl-fh.h"
++
++/* extended range in FW SRAM */
++#define IWL_FW_MEM_EXTENDED_START 0x40000
++#define IWL_FW_MEM_EXTENDED_END 0x57FFF
++
++static void iwl_pcie_free_fw_monitor(struct iwl_trans *trans)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ if (!trans_pcie->fw_mon_page)
++ return;
++
++ dma_unmap_page(trans->dev, trans_pcie->fw_mon_phys,
++ trans_pcie->fw_mon_size, DMA_FROM_DEVICE);
++ __free_pages(trans_pcie->fw_mon_page,
++ get_order(trans_pcie->fw_mon_size));
++ trans_pcie->fw_mon_page = NULL;
++ trans_pcie->fw_mon_phys = 0;
++ trans_pcie->fw_mon_size = 0;
++}
++
++static void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ struct page *page = NULL;
++ dma_addr_t phys;
++ u32 size = 0;
++ u8 power;
++
++ if (!max_power) {
++ /* default max_power is maximum */
++ max_power = 26;
++ } else {
++ max_power += 11;
++ }
++
++ if (WARN(max_power > 26,
++ "External buffer size for monitor is too big %d, check the FW TLV\n",
++ max_power))
++ return;
++
++ if (trans_pcie->fw_mon_page) {
++ dma_sync_single_for_device(trans->dev, trans_pcie->fw_mon_phys,
++ trans_pcie->fw_mon_size,
++ DMA_FROM_DEVICE);
++ return;
++ }
++
++ phys = 0;
++ for (power = max_power; power >= 11; power--) {
++ int order;
++
++ size = BIT(power);
++ order = get_order(size);
++ page = alloc_pages(__GFP_COMP | __GFP_NOWARN | __GFP_ZERO,
++ order);
++ if (!page)
++ continue;
++
++ phys = dma_map_page(trans->dev, page, 0, PAGE_SIZE << order,
++ DMA_FROM_DEVICE);
++ if (dma_mapping_error(trans->dev, phys)) {
++ __free_pages(page, order);
++ page = NULL;
++ continue;
++ }
++ IWL_INFO(trans,
++ "Allocated 0x%08x bytes (order %d) for firmware monitor.\n",
++ size, order);
++ break;
++ }
++
++ if (WARN_ON_ONCE(!page))
++ return;
++
++ if (power != max_power)
++ IWL_ERR(trans,
++ "Sorry - debug buffer is only %luK while you requested %luK\n",
++ (unsigned long)BIT(power - 10),
++ (unsigned long)BIT(max_power - 10));
++
++ trans_pcie->fw_mon_page = page;
++ trans_pcie->fw_mon_phys = phys;
++ trans_pcie->fw_mon_size = size;
++}
++
++static u32 iwl_trans_pcie_read_shr(struct iwl_trans *trans, u32 reg)
++{
++ iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG,
++ ((reg & 0x0000ffff) | (2 << 28)));
++ return iwl_read32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG);
++}
++
++static void iwl_trans_pcie_write_shr(struct iwl_trans *trans, u32 reg, u32 val)
++{
++ iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG, val);
++ iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG,
++ ((reg & 0x0000ffff) | (3 << 28)));
++}
++
++static void iwl_pcie_set_pwr(struct iwl_trans *trans, bool vaux)
++{
++ if (trans->cfg->apmg_not_supported)
++ return;
++
++ if (vaux && pci_pme_capable(to_pci_dev(trans->dev), PCI_D3cold))
++ iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG,
++ APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
++ ~APMG_PS_CTRL_MSK_PWR_SRC);
++ else
++ iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG,
++ APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
++ ~APMG_PS_CTRL_MSK_PWR_SRC);
++}
++
++/* PCI registers */
++#define PCI_CFG_RETRY_TIMEOUT 0x041
++
++static void iwl_pcie_apm_config(struct iwl_trans *trans)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ u16 lctl;
++ u16 cap;
++
++ /*
++ * HW bug W/A for instability in PCIe bus L0S->L1 transition.
++ * Check if BIOS (or OS) enabled L1-ASPM on this device.
++ * If so (likely), disable L0S, so device moves directly L0->L1;
++ * costs negligible amount of power savings.
++ * If not (unlikely), enable L0S, so there is at least some
++ * power savings, even without L1.
++ */
++ pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl);
++ if (lctl & PCI_EXP_LNKCTL_ASPM_L1)
++ iwl_set_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
++ else
++ iwl_clear_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
++ trans->pm_support = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S);
++
++ pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_DEVCTL2, &cap);
++ trans->ltr_enabled = cap & PCI_EXP_DEVCTL2_LTR_EN;
++ dev_info(trans->dev, "L1 %sabled - LTR %sabled\n",
++ (lctl & PCI_EXP_LNKCTL_ASPM_L1) ? "En" : "Dis",
++ trans->ltr_enabled ? "En" : "Dis");
++}
++
++/*
++ * Start up NIC's basic functionality after it has been reset
++ * (e.g. after platform boot, or shutdown via iwl_pcie_apm_stop())
++ * NOTE: This does not load uCode nor start the embedded processor
++ */
++static int iwl_pcie_apm_init(struct iwl_trans *trans)
++{
++ int ret = 0;
++ IWL_DEBUG_INFO(trans, "Init card's basic functions\n");
++
++ /*
++ * Use "set_bit" below rather than "write", to preserve any hardware
++ * bits already set by default after reset.
++ */
++
++ /* Disable L0S exit timer (platform NMI Work/Around) */
++ if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
++ iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS,
++ CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
++
++ /*
++ * Disable L0s without affecting L1;
++ * don't wait for ICH L0s (ICH bug W/A)
++ */
++ iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS,
++ CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
++
++ /* Set FH wait threshold to maximum (HW error during stress W/A) */
++ iwl_set_bit(trans, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
++
++ /*
++ * Enable HAP INTA (interrupt from management bus) to
++ * wake device's PCI Express link L1a -> L0s
++ */
++ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
++ CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
++
++ iwl_pcie_apm_config(trans);
++
++ /* Configure analog phase-lock-loop before activating to D0A */
++ if (trans->cfg->base_params->pll_cfg_val)
++ iwl_set_bit(trans, CSR_ANA_PLL_CFG,
++ trans->cfg->base_params->pll_cfg_val);
++
++ /*
++ * Set "initialization complete" bit to move adapter from
++ * D0U* --> D0A* (powered-up active) state.
++ */
++ iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
++
++ /*
++ * Wait for clock stabilization; once stabilized, access to
++ * device-internal resources is supported, e.g. iwl_write_prph()
++ * and accesses to uCode SRAM.
++ */
++ ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
++ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
++ if (ret < 0) {
++ IWL_DEBUG_INFO(trans, "Failed to init the card\n");
++ goto out;
++ }
++
++ if (trans->cfg->host_interrupt_operation_mode) {
++ /*
++ * This is a bit of an abuse - This is needed for 7260 / 3160
++ * only check host_interrupt_operation_mode even if this is
++ * not related to host_interrupt_operation_mode.
++ *
++ * Enable the oscillator to count wake up time for L1 exit. This
++ * consumes slightly more power (100uA) - but allows to be sure
++ * that we wake up from L1 on time.
++ *
++ * This looks weird: read twice the same register, discard the
++ * value, set a bit, and yet again, read that same register
++ * just to discard the value. But that's the way the hardware
++ * seems to like it.
++ */
++ iwl_read_prph(trans, OSC_CLK);
++ iwl_read_prph(trans, OSC_CLK);
++ iwl_set_bits_prph(trans, OSC_CLK, OSC_CLK_FORCE_CONTROL);
++ iwl_read_prph(trans, OSC_CLK);
++ iwl_read_prph(trans, OSC_CLK);
++ }
++
++ /*
++ * Enable DMA clock and wait for it to stabilize.
++ *
++ * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0"
++ * bits do not disable clocks. This preserves any hardware
++ * bits already set by default in "CLK_CTRL_REG" after reset.
++ */
++ if (!trans->cfg->apmg_not_supported) {
++ iwl_write_prph(trans, APMG_CLK_EN_REG,
++ APMG_CLK_VAL_DMA_CLK_RQT);
++ udelay(20);
++
++ /* Disable L1-Active */
++ iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
++ APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
++
++ /* Clear the interrupt in APMG if the NIC is in RFKILL */
++ iwl_write_prph(trans, APMG_RTC_INT_STT_REG,
++ APMG_RTC_INT_STT_RFKILL);
++ }
++
++ set_bit(STATUS_DEVICE_ENABLED, &trans->status);
++
++out:
++ return ret;
++}
++
++/*
++ * Enable LP XTAL to avoid HW bug where device may consume much power if
++ * FW is not loaded after device reset. LP XTAL is disabled by default
++ * after device HW reset. Do it only if XTAL is fed by internal source.
++ * Configure device's "persistence" mode to avoid resetting XTAL again when
++ * SHRD_HW_RST occurs in S3.
++ */
++static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans)
++{
++ int ret;
++ u32 apmg_gp1_reg;
++ u32 apmg_xtal_cfg_reg;
++ u32 dl_cfg_reg;
++
++ /* Force XTAL ON */
++ __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
++
++ /* Reset entire device - do controller reset (results in SHRD_HW_RST) */
++ iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
++
++ udelay(10);
++
++ /*
++ * Set "initialization complete" bit to move adapter from
++ * D0U* --> D0A* (powered-up active) state.
++ */
++ iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
++
++ /*
++ * Wait for clock stabilization; once stabilized, access to
++ * device-internal resources is possible.
++ */
++ ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
++ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
++ 25000);
++ if (WARN_ON(ret < 0)) {
++ IWL_ERR(trans, "Access time out - failed to enable LP XTAL\n");
++ /* Release XTAL ON request */
++ __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
++ return;
++ }
++
++ /*
++ * Clear "disable persistence" to avoid LP XTAL resetting when
++ * SHRD_HW_RST is applied in S3.
++ */
++ iwl_clear_bits_prph(trans, APMG_PCIDEV_STT_REG,
++ APMG_PCIDEV_STT_VAL_PERSIST_DIS);
++
++ /*
++ * Force APMG XTAL to be active to prevent its disabling by HW
++ * caused by APMG idle state.
++ */
++ apmg_xtal_cfg_reg = iwl_trans_pcie_read_shr(trans,
++ SHR_APMG_XTAL_CFG_REG);
++ iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG,
++ apmg_xtal_cfg_reg |
++ SHR_APMG_XTAL_CFG_XTAL_ON_REQ);
++
++ /*
++ * Reset entire device again - do controller reset (results in
++ * SHRD_HW_RST). Turn MAC off before proceeding.
++ */
++ iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
++
++ udelay(10);
++
++ /* Enable LP XTAL by indirect access through CSR */
++ apmg_gp1_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_GP1_REG);
++ iwl_trans_pcie_write_shr(trans, SHR_APMG_GP1_REG, apmg_gp1_reg |
++ SHR_APMG_GP1_WF_XTAL_LP_EN |
++ SHR_APMG_GP1_CHICKEN_BIT_SELECT);
++
++ /* Clear delay line clock power up */
++ dl_cfg_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_DL_CFG_REG);
++ iwl_trans_pcie_write_shr(trans, SHR_APMG_DL_CFG_REG, dl_cfg_reg &
++ ~SHR_APMG_DL_CFG_DL_CLOCK_POWER_UP);
++
++ /*
++ * Enable persistence mode to avoid LP XTAL resetting when
++ * SHRD_HW_RST is applied in S3.
++ */
++ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
++ CSR_HW_IF_CONFIG_REG_PERSIST_MODE);
++
++ /*
++ * Clear "initialization complete" bit to move adapter from
++ * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
++ */
++ iwl_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
++
++ /* Activates XTAL resources monitor */
++ __iwl_trans_pcie_set_bit(trans, CSR_MONITOR_CFG_REG,
++ CSR_MONITOR_XTAL_RESOURCES);
++
++ /* Release XTAL ON request */
++ __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
++ udelay(10);
++
++ /* Release APMG XTAL */
++ iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG,
++ apmg_xtal_cfg_reg &
++ ~SHR_APMG_XTAL_CFG_XTAL_ON_REQ);
++}
++
++static int iwl_pcie_apm_stop_master(struct iwl_trans *trans)
++{
++ int ret = 0;
++
++ /* stop device's busmaster DMA activity */
++ iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
++
++ ret = iwl_poll_bit(trans, CSR_RESET,
++ CSR_RESET_REG_FLAG_MASTER_DISABLED,
++ CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
++ if (ret < 0)
++ IWL_WARN(trans, "Master Disable Timed Out, 100 usec\n");
++
++ IWL_DEBUG_INFO(trans, "stop master\n");
++
++ return ret;
++}
++
++static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave)
++{
++ IWL_DEBUG_INFO(trans, "Stop card, put in low power state\n");
++
++ if (op_mode_leave) {
++ if (!test_bit(STATUS_DEVICE_ENABLED, &trans->status))
++ iwl_pcie_apm_init(trans);
++
++ /* inform ME that we are leaving */
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000)
++ iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
++ APMG_PCIDEV_STT_VAL_WAKE_ME);
++ else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
++ iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
++ CSR_RESET_LINK_PWR_MGMT_DISABLED);
++ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
++ CSR_HW_IF_CONFIG_REG_PREPARE |
++ CSR_HW_IF_CONFIG_REG_ENABLE_PME);
++ mdelay(1);
++ iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
++ CSR_RESET_LINK_PWR_MGMT_DISABLED);
++ }
++ mdelay(5);
++ }
++
++ clear_bit(STATUS_DEVICE_ENABLED, &trans->status);
++
++ /* Stop device's DMA activity */
++ iwl_pcie_apm_stop_master(trans);
++
++ if (trans->cfg->lp_xtal_workaround) {
++ iwl_pcie_apm_lp_xtal_enable(trans);
++ return;
++ }
++
++ /* Reset the entire device */
++ iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
++
++ udelay(10);
++
++ /*
++ * Clear "initialization complete" bit to move adapter from
++ * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
++ */
++ iwl_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
++}
++
++static int iwl_pcie_nic_init(struct iwl_trans *trans)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ /* nic_init */
++ spin_lock(&trans_pcie->irq_lock);
++ iwl_pcie_apm_init(trans);
++
++ spin_unlock(&trans_pcie->irq_lock);
++
++ iwl_pcie_set_pwr(trans, false);
++
++ iwl_op_mode_nic_config(trans->op_mode);
++
++ /* Allocate the RX queue, or reset if it is already allocated */
++ iwl_pcie_rx_init(trans);
++
++ /* Allocate or reset and init all Tx and Command queues */
++ if (iwl_pcie_tx_init(trans))
++ return -ENOMEM;
++
++ if (trans->cfg->base_params->shadow_reg_enable) {
++ /* enable shadow regs in HW */
++ iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL, 0x800FFFFF);
++ IWL_DEBUG_INFO(trans, "Enabling shadow registers in device\n");
++ }
++
++ return 0;
++}
++
++#define HW_READY_TIMEOUT (50)
++
++/* Note: returns poll_bit return value, which is >= 0 if success */
++static int iwl_pcie_set_hw_ready(struct iwl_trans *trans)
++{
++ int ret;
++
++ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
++ CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
++
++ /* See if we got it */
++ ret = iwl_poll_bit(trans, CSR_HW_IF_CONFIG_REG,
++ CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
++ CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
++ HW_READY_TIMEOUT);
++
++ if (ret >= 0)
++ iwl_set_bit(trans, CSR_MBOX_SET_REG, CSR_MBOX_SET_REG_OS_ALIVE);
++
++ IWL_DEBUG_INFO(trans, "hardware%s ready\n", ret < 0 ? " not" : "");
++ return ret;
++}
++
++/* Note: returns standard 0/-ERROR code */
++static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
++{
++ int ret;
++ int t = 0;
++ int iter;
++
++ IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n");
++
++ ret = iwl_pcie_set_hw_ready(trans);
++ /* If the card is ready, exit 0 */
++ if (ret >= 0)
++ return 0;
++
++ iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
++ CSR_RESET_LINK_PWR_MGMT_DISABLED);
++ msleep(1);
++
++ for (iter = 0; iter < 10; iter++) {
++ /* If HW is not ready, prepare the conditions to check again */
++ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
++ CSR_HW_IF_CONFIG_REG_PREPARE);
++
++ do {
++ ret = iwl_pcie_set_hw_ready(trans);
++ if (ret >= 0)
++ return 0;
++
++ usleep_range(200, 1000);
++ t += 200;
++ } while (t < 150000);
++ msleep(25);
++ }
++
++ IWL_ERR(trans, "Couldn't prepare the card\n");
++
++ return ret;
++}
++
++/*
++ * ucode
++ */
++static int iwl_pcie_load_firmware_chunk(struct iwl_trans *trans, u32 dst_addr,
++ dma_addr_t phy_addr, u32 byte_cnt)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ int ret;
++
++ trans_pcie->ucode_write_complete = false;
++
++ iwl_write_direct32(trans,
++ FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
++ FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE);
++
++ iwl_write_direct32(trans,
++ FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL),
++ dst_addr);
++
++ iwl_write_direct32(trans,
++ FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL),
++ phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK);
++
++ iwl_write_direct32(trans,
++ FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL),
++ (iwl_get_dma_hi_addr(phy_addr)
++ << FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt);
++
++ iwl_write_direct32(trans,
++ FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL),
++ 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM |
++ 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX |
++ FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID);
++
++ iwl_write_direct32(trans,
++ FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
++ FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
++ FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE |
++ FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD);
++
++ ret = wait_event_timeout(trans_pcie->ucode_write_waitq,
++ trans_pcie->ucode_write_complete, 5 * HZ);
++ if (!ret) {
++ IWL_ERR(trans, "Failed to load firmware chunk!\n");
++ return -ETIMEDOUT;
++ }
++
++ return 0;
++}
++
++static int iwl_pcie_load_section(struct iwl_trans *trans, u8 section_num,
++ const struct fw_desc *section)
++{
++ u8 *v_addr;
++ dma_addr_t p_addr;
++ u32 offset, chunk_sz = min_t(u32, FH_MEM_TB_MAX_LENGTH, section->len);
++ int ret = 0;
++
++ IWL_DEBUG_FW(trans, "[%d] uCode section being loaded...\n",
++ section_num);
++
++ v_addr = dma_alloc_coherent(trans->dev, chunk_sz, &p_addr,
++ GFP_KERNEL | __GFP_NOWARN);
++ if (!v_addr) {
++ IWL_DEBUG_INFO(trans, "Falling back to small chunks of DMA\n");
++ chunk_sz = PAGE_SIZE;
++ v_addr = dma_alloc_coherent(trans->dev, chunk_sz,
++ &p_addr, GFP_KERNEL);
++ if (!v_addr)
++ return -ENOMEM;
++ }
++
++ for (offset = 0; offset < section->len; offset += chunk_sz) {
++ u32 copy_size, dst_addr;
++ bool extended_addr = false;
++
++ copy_size = min_t(u32, chunk_sz, section->len - offset);
++ dst_addr = section->offset + offset;
++
++ if (dst_addr >= IWL_FW_MEM_EXTENDED_START &&
++ dst_addr <= IWL_FW_MEM_EXTENDED_END)
++ extended_addr = true;
++
++ if (extended_addr)
++ iwl_set_bits_prph(trans, LMPM_CHICK,
++ LMPM_CHICK_EXTENDED_ADDR_SPACE);
++
++ memcpy(v_addr, (u8 *)section->data + offset, copy_size);
++ ret = iwl_pcie_load_firmware_chunk(trans, dst_addr, p_addr,
++ copy_size);
++
++ if (extended_addr)
++ iwl_clear_bits_prph(trans, LMPM_CHICK,
++ LMPM_CHICK_EXTENDED_ADDR_SPACE);
++
++ if (ret) {
++ IWL_ERR(trans,
++ "Could not load the [%d] uCode section\n",
++ section_num);
++ break;
++ }
++ }
++
++ dma_free_coherent(trans->dev, chunk_sz, v_addr, p_addr);
++ return ret;
++}
++
++/*
++ * Driver Takes the ownership on secure machine before FW load
++ * and prevent race with the BT load.
++ * W/A for ROM bug. (should be remove in the next Si step)
++ */
++static int iwl_pcie_rsa_race_bug_wa(struct iwl_trans *trans)
++{
++ u32 val, loop = 1000;
++
++ /*
++ * Check the RSA semaphore is accessible.
++ * If the HW isn't locked and the rsa semaphore isn't accessible,
++ * we are in trouble.
++ */
++ val = iwl_read_prph(trans, PREG_AUX_BUS_WPROT_0);
++ if (val & (BIT(1) | BIT(17))) {
++ IWL_INFO(trans,
++ "can't access the RSA semaphore it is write protected\n");
++ return 0;
++ }
++
++ /* take ownership on the AUX IF */
++ iwl_write_prph(trans, WFPM_CTRL_REG, WFPM_AUX_CTL_AUX_IF_MAC_OWNER_MSK);
++ iwl_write_prph(trans, AUX_MISC_MASTER1_EN, AUX_MISC_MASTER1_EN_SBE_MSK);
++
++ do {
++ iwl_write_prph(trans, AUX_MISC_MASTER1_SMPHR_STATUS, 0x1);
++ val = iwl_read_prph(trans, AUX_MISC_MASTER1_SMPHR_STATUS);
++ if (val == 0x1) {
++ iwl_write_prph(trans, RSA_ENABLE, 0);
++ return 0;
++ }
++
++ udelay(10);
++ loop--;
++ } while (loop > 0);
++
++ IWL_ERR(trans, "Failed to take ownership on secure machine\n");
++ return -EIO;
++}
++
++static int iwl_pcie_load_cpu_sections_8000(struct iwl_trans *trans,
++ const struct fw_img *image,
++ int cpu,
++ int *first_ucode_section)
++{
++ int shift_param;
++ int i, ret = 0, sec_num = 0x1;
++ u32 val, last_read_idx = 0;
++
++ if (cpu == 1) {
++ shift_param = 0;
++ *first_ucode_section = 0;
++ } else {
++ shift_param = 16;
++ (*first_ucode_section)++;
++ }
++
++ for (i = *first_ucode_section; i < IWL_UCODE_SECTION_MAX; i++) {
++ last_read_idx = i;
++
++ /*
++ * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between
++ * CPU1 to CPU2.
++ * PAGING_SEPARATOR_SECTION delimiter - separate between
++ * CPU2 non paged to CPU2 paging sec.
++ */
++ if (!image->sec[i].data ||
++ image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION ||
++ image->sec[i].offset == PAGING_SEPARATOR_SECTION) {
++ IWL_DEBUG_FW(trans,
++ "Break since Data not valid or Empty section, sec = %d\n",
++ i);
++ break;
++ }
++
++ ret = iwl_pcie_load_section(trans, i, &image->sec[i]);
++ if (ret)
++ return ret;
++
++ /* Notify the ucode of the loaded section number and status */
++ val = iwl_read_direct32(trans, FH_UCODE_LOAD_STATUS);
++ val = val | (sec_num << shift_param);
++ iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, val);
++ sec_num = (sec_num << 1) | 0x1;
++ }
++
++ *first_ucode_section = last_read_idx;
++
++ if (cpu == 1)
++ iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, 0xFFFF);
++ else
++ iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, 0xFFFFFFFF);
++
++ return 0;
++}
++
++static int iwl_pcie_load_cpu_sections(struct iwl_trans *trans,
++ const struct fw_img *image,
++ int cpu,
++ int *first_ucode_section)
++{
++ int shift_param;
++ int i, ret = 0;
++ u32 last_read_idx = 0;
++
++ if (cpu == 1) {
++ shift_param = 0;
++ *first_ucode_section = 0;
++ } else {
++ shift_param = 16;
++ (*first_ucode_section)++;
++ }
++
++ for (i = *first_ucode_section; i < IWL_UCODE_SECTION_MAX; i++) {
++ last_read_idx = i;
++
++ /*
++ * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between
++ * CPU1 to CPU2.
++ * PAGING_SEPARATOR_SECTION delimiter - separate between
++ * CPU2 non paged to CPU2 paging sec.
++ */
++ if (!image->sec[i].data ||
++ image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION ||
++ image->sec[i].offset == PAGING_SEPARATOR_SECTION) {
++ IWL_DEBUG_FW(trans,
++ "Break since Data not valid or Empty section, sec = %d\n",
++ i);
++ break;
++ }
++
++ ret = iwl_pcie_load_section(trans, i, &image->sec[i]);
++ if (ret)
++ return ret;
++ }
++
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
++ iwl_set_bits_prph(trans,
++ CSR_UCODE_LOAD_STATUS_ADDR,
++ (LMPM_CPU_UCODE_LOADING_COMPLETED |
++ LMPM_CPU_HDRS_LOADING_COMPLETED |
++ LMPM_CPU_UCODE_LOADING_STARTED) <<
++ shift_param);
++
++ *first_ucode_section = last_read_idx;
++
++ return 0;
++}
++
++static void iwl_pcie_apply_destination(struct iwl_trans *trans)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ const struct iwl_fw_dbg_dest_tlv *dest = trans->dbg_dest_tlv;
++ int i;
++
++ if (dest->version)
++ IWL_ERR(trans,
++ "DBG DEST version is %d - expect issues\n",
++ dest->version);
++
++ IWL_INFO(trans, "Applying debug destination %s\n",
++ get_fw_dbg_mode_string(dest->monitor_mode));
++
++ if (dest->monitor_mode == EXTERNAL_MODE)
++ iwl_pcie_alloc_fw_monitor(trans, dest->size_power);
++ else
++ IWL_WARN(trans, "PCI should have external buffer debug\n");
++
++ for (i = 0; i < trans->dbg_dest_reg_num; i++) {
++ u32 addr = le32_to_cpu(dest->reg_ops[i].addr);
++ u32 val = le32_to_cpu(dest->reg_ops[i].val);
++
++ switch (dest->reg_ops[i].op) {
++ case CSR_ASSIGN:
++ iwl_write32(trans, addr, val);
++ break;
++ case CSR_SETBIT:
++ iwl_set_bit(trans, addr, BIT(val));
++ break;
++ case CSR_CLEARBIT:
++ iwl_clear_bit(trans, addr, BIT(val));
++ break;
++ case PRPH_ASSIGN:
++ iwl_write_prph(trans, addr, val);
++ break;
++ case PRPH_SETBIT:
++ iwl_set_bits_prph(trans, addr, BIT(val));
++ break;
++ case PRPH_CLEARBIT:
++ iwl_clear_bits_prph(trans, addr, BIT(val));
++ break;
++ case PRPH_BLOCKBIT:
++ if (iwl_read_prph(trans, addr) & BIT(val)) {
++ IWL_ERR(trans,
++ "BIT(%u) in address 0x%x is 1, stopping FW configuration\n",
++ val, addr);
++ goto monitor;
++ }
++ break;
++ default:
++ IWL_ERR(trans, "FW debug - unknown OP %d\n",
++ dest->reg_ops[i].op);
++ break;
++ }
++ }
++
++monitor:
++ if (dest->monitor_mode == EXTERNAL_MODE && trans_pcie->fw_mon_size) {
++ iwl_write_prph(trans, le32_to_cpu(dest->base_reg),
++ trans_pcie->fw_mon_phys >> dest->base_shift);
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
++ iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
++ (trans_pcie->fw_mon_phys +
++ trans_pcie->fw_mon_size - 256) >>
++ dest->end_shift);
++ else
++ iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
++ (trans_pcie->fw_mon_phys +
++ trans_pcie->fw_mon_size) >>
++ dest->end_shift);
++ }
++}
++
++static int iwl_pcie_load_given_ucode(struct iwl_trans *trans,
++ const struct fw_img *image)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ int ret = 0;
++ int first_ucode_section;
++
++ IWL_DEBUG_FW(trans, "working with %s CPU\n",
++ image->is_dual_cpus ? "Dual" : "Single");
++
++ /* load to FW the binary non secured sections of CPU1 */
++ ret = iwl_pcie_load_cpu_sections(trans, image, 1, &first_ucode_section);
++ if (ret)
++ return ret;
++
++ if (image->is_dual_cpus) {
++ /* set CPU2 header address */
++ iwl_write_prph(trans,
++ LMPM_SECURE_UCODE_LOAD_CPU2_HDR_ADDR,
++ LMPM_SECURE_CPU2_HDR_MEM_SPACE);
++
++ /* load to FW the binary sections of CPU2 */
++ ret = iwl_pcie_load_cpu_sections(trans, image, 2,
++ &first_ucode_section);
++ if (ret)
++ return ret;
++ }
++
++ /* supported for 7000 only for the moment */
++ if (iwlwifi_mod_params.fw_monitor &&
++ trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
++ iwl_pcie_alloc_fw_monitor(trans, 0);
++
++ if (trans_pcie->fw_mon_size) {
++ iwl_write_prph(trans, MON_BUFF_BASE_ADDR,
++ trans_pcie->fw_mon_phys >> 4);
++ iwl_write_prph(trans, MON_BUFF_END_ADDR,
++ (trans_pcie->fw_mon_phys +
++ trans_pcie->fw_mon_size) >> 4);
++ }
++ } else if (trans->dbg_dest_tlv) {
++ iwl_pcie_apply_destination(trans);
++ }
++
++ /* release CPU reset */
++ iwl_write32(trans, CSR_RESET, 0);
++
++ return 0;
++}
++
++static int iwl_pcie_load_given_ucode_8000(struct iwl_trans *trans,
++ const struct fw_img *image)
++{
++ int ret = 0;
++ int first_ucode_section;
++
++ IWL_DEBUG_FW(trans, "working with %s CPU\n",
++ image->is_dual_cpus ? "Dual" : "Single");
++
++ if (trans->dbg_dest_tlv)
++ iwl_pcie_apply_destination(trans);
++
++ /* TODO: remove in the next Si step */
++ ret = iwl_pcie_rsa_race_bug_wa(trans);
++ if (ret)
++ return ret;
++
++ /* configure the ucode to be ready to get the secured image */
++ /* release CPU reset */
++ iwl_write_prph(trans, RELEASE_CPU_RESET, RELEASE_CPU_RESET_BIT);
++
++ /* load to FW the binary Secured sections of CPU1 */
++ ret = iwl_pcie_load_cpu_sections_8000(trans, image, 1,
++ &first_ucode_section);
++ if (ret)
++ return ret;
++
++ /* load to FW the binary sections of CPU2 */
++ return iwl_pcie_load_cpu_sections_8000(trans, image, 2,
++ &first_ucode_section);
++}
++
++static int iwl_trans_pcie_start_fw(struct iwl_trans *trans,
++ const struct fw_img *fw, bool run_in_rfkill)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ bool hw_rfkill;
++ int ret;
++
++ mutex_lock(&trans_pcie->mutex);
++
++ /* Someone called stop_device, don't try to start_fw */
++ if (trans_pcie->is_down) {
++ IWL_WARN(trans,
++ "Can't start_fw since the HW hasn't been started\n");
++ ret = EIO;
++ goto out;
++ }
++
++ /* This may fail if AMT took ownership of the device */
++ if (iwl_pcie_prepare_card_hw(trans)) {
++ IWL_WARN(trans, "Exit HW not ready\n");
++ ret = -EIO;
++ goto out;
++ }
++
++ iwl_enable_rfkill_int(trans);
++
++ /* If platform's RF_KILL switch is NOT set to KILL */
++ hw_rfkill = iwl_is_rfkill_set(trans);
++ if (hw_rfkill)
++ set_bit(STATUS_RFKILL, &trans->status);
++ else
++ clear_bit(STATUS_RFKILL, &trans->status);
++ iwl_trans_pcie_rf_kill(trans, hw_rfkill);
++ if (hw_rfkill && !run_in_rfkill) {
++ ret = -ERFKILL;
++ goto out;
++ }
++
++ iwl_write32(trans, CSR_INT, 0xFFFFFFFF);
++
++ ret = iwl_pcie_nic_init(trans);
++ if (ret) {
++ IWL_ERR(trans, "Unable to init nic\n");
++ goto out;
++ }
++
++ /* make sure rfkill handshake bits are cleared */
++ iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
++ iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR,
++ CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
++
++ /* clear (again), then enable host interrupts */
++ iwl_write32(trans, CSR_INT, 0xFFFFFFFF);
++ iwl_enable_interrupts(trans);
++
++ /* really make sure rfkill handshake bits are cleared */
++ iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
++ iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
++
++ /* Load the given image to the HW */
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
++ ret = iwl_pcie_load_given_ucode_8000(trans, fw);
++ else
++ ret = iwl_pcie_load_given_ucode(trans, fw);
++
++out:
++ mutex_unlock(&trans_pcie->mutex);
++ return ret;
++}
++
++static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr)
++{
++ iwl_pcie_reset_ict(trans);
++ iwl_pcie_tx_start(trans, scd_addr);
++}
++
++static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ bool hw_rfkill, was_hw_rfkill;
++
++ lockdep_assert_held(&trans_pcie->mutex);
++
++ if (trans_pcie->is_down)
++ return;
++
++ trans_pcie->is_down = true;
++
++ was_hw_rfkill = iwl_is_rfkill_set(trans);
++
++ /* tell the device to stop sending interrupts */
++ spin_lock(&trans_pcie->irq_lock);
++ iwl_disable_interrupts(trans);
++ spin_unlock(&trans_pcie->irq_lock);
++
++ /* device going down, Stop using ICT table */
++ iwl_pcie_disable_ict(trans);
++
++ /*
++ * If a HW restart happens during firmware loading,
++ * then the firmware loading might call this function
++ * and later it might be called again due to the
++ * restart. So don't process again if the device is
++ * already dead.
++ */
++ if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) {
++ IWL_DEBUG_INFO(trans, "DEVICE_ENABLED bit was set and is now cleared\n");
++ iwl_pcie_tx_stop(trans);
++ iwl_pcie_rx_stop(trans);
++
++ /* Power-down device's busmaster DMA clocks */
++ if (!trans->cfg->apmg_not_supported) {
++ iwl_write_prph(trans, APMG_CLK_DIS_REG,
++ APMG_CLK_VAL_DMA_CLK_RQT);
++ udelay(5);
++ }
++ }
++
++ /* Make sure (redundant) we've released our request to stay awake */
++ iwl_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
++
++ /* Stop the device, and put it in low power state */
++ iwl_pcie_apm_stop(trans, false);
++
++ /* stop and reset the on-board processor */
++ iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
++ udelay(20);
++
++ /*
++ * Upon stop, the APM issues an interrupt if HW RF kill is set.
++ * This is a bug in certain verions of the hardware.
++ * Certain devices also keep sending HW RF kill interrupt all
++ * the time, unless the interrupt is ACKed even if the interrupt
++ * should be masked. Re-ACK all the interrupts here.
++ */
++ spin_lock(&trans_pcie->irq_lock);
++ iwl_disable_interrupts(trans);
++ spin_unlock(&trans_pcie->irq_lock);
++
++
++ /* clear all status bits */
++ clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status);
++ clear_bit(STATUS_INT_ENABLED, &trans->status);
++ clear_bit(STATUS_TPOWER_PMI, &trans->status);
++ clear_bit(STATUS_RFKILL, &trans->status);
++
++ /*
++ * Even if we stop the HW, we still want the RF kill
++ * interrupt
++ */
++ iwl_enable_rfkill_int(trans);
++
++ /*
++ * Check again since the RF kill state may have changed while
++ * all the interrupts were disabled, in this case we couldn't
++ * receive the RF kill interrupt and update the state in the
++ * op_mode.
++ * Don't call the op_mode if the rkfill state hasn't changed.
++ * This allows the op_mode to call stop_device from the rfkill
++ * notification without endless recursion. Under very rare
++ * circumstances, we might have a small recursion if the rfkill
++ * state changed exactly now while we were called from stop_device.
++ * This is very unlikely but can happen and is supported.
++ */
++ hw_rfkill = iwl_is_rfkill_set(trans);
++ if (hw_rfkill)
++ set_bit(STATUS_RFKILL, &trans->status);
++ else
++ clear_bit(STATUS_RFKILL, &trans->status);
++ if (hw_rfkill != was_hw_rfkill)
++ iwl_trans_pcie_rf_kill(trans, hw_rfkill);
++
++ /* re-take ownership to prevent other users from stealing the deivce */
++ iwl_pcie_prepare_card_hw(trans);
++}
++
++static void iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ mutex_lock(&trans_pcie->mutex);
++ _iwl_trans_pcie_stop_device(trans, low_power);
++ mutex_unlock(&trans_pcie->mutex);
++}
++
++void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state)
++{
++ struct iwl_trans_pcie __maybe_unused *trans_pcie =
++ IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ lockdep_assert_held(&trans_pcie->mutex);
++
++ if (iwl_op_mode_hw_rf_kill(trans->op_mode, state))
++ _iwl_trans_pcie_stop_device(trans, true);
++}
++
++static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ if (trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3) {
++ /* Enable persistence mode to avoid reset */
++ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
++ CSR_HW_IF_CONFIG_REG_PERSIST_MODE);
++ }
++
++ iwl_disable_interrupts(trans);
++
++ /*
++ * in testing mode, the host stays awake and the
++ * hardware won't be reset (not even partially)
++ */
++ if (test)
++ return;
++
++ iwl_pcie_disable_ict(trans);
++
++ synchronize_irq(trans_pcie->pci_dev->irq);
++
++ iwl_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
++ iwl_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
++
++ if (trans->system_pm_mode == IWL_PLAT_PM_MODE_D3) {
++ /*
++ * reset TX queues -- some of their registers reset during S3
++ * so if we don't reset everything here the D3 image would try
++ * to execute some invalid memory upon resume
++ */
++ iwl_trans_pcie_tx_reset(trans);
++ }
++
++ iwl_pcie_set_pwr(trans, true);
++}
++
++static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
++ enum iwl_d3_status *status,
++ bool test)
++{
++ u32 val;
++ int ret;
++
++ if (test) {
++ iwl_enable_interrupts(trans);
++ *status = IWL_D3_STATUS_ALIVE;
++ return 0;
++ }
++
++ /*
++ * Also enables interrupts - none will happen as the device doesn't
++ * know we're waking it up, only when the opmode actually tells it
++ * after this call.
++ */
++ iwl_pcie_reset_ict(trans);
++
++ iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
++ iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
++
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
++ udelay(2);
++
++ ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
++ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
++ 25000);
++ if (ret < 0) {
++ IWL_ERR(trans, "Failed to resume the device (mac ready)\n");
++ return ret;
++ }
++
++ iwl_pcie_set_pwr(trans, false);
++
++ if (trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3) {
++ iwl_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
++ } else {
++ iwl_trans_pcie_tx_reset(trans);
++
++ ret = iwl_pcie_rx_init(trans);
++ if (ret) {
++ IWL_ERR(trans,
++ "Failed to resume the device (RX reset)\n");
++ return ret;
++ }
++ }
++
++ val = iwl_read32(trans, CSR_RESET);
++ if (val & CSR_RESET_REG_FLAG_NEVO_RESET)
++ *status = IWL_D3_STATUS_RESET;
++ else
++ *status = IWL_D3_STATUS_ALIVE;
++
++ return 0;
++}
++
++static int _iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ bool hw_rfkill;
++ int err;
++
++ lockdep_assert_held(&trans_pcie->mutex);
++
++ err = iwl_pcie_prepare_card_hw(trans);
++ if (err) {
++ IWL_ERR(trans, "Error while preparing HW: %d\n", err);
++ return err;
++ }
++
++ /* Reset the entire device */
++ iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
++
++ usleep_range(10, 15);
++
++ iwl_pcie_apm_init(trans);
++
++ /* From now on, the op_mode will be kept updated about RF kill state */
++ iwl_enable_rfkill_int(trans);
++
++ /* Set is_down to false here so that...*/
++ trans_pcie->is_down = false;
++
++ hw_rfkill = iwl_is_rfkill_set(trans);
++ if (hw_rfkill)
++ set_bit(STATUS_RFKILL, &trans->status);
++ else
++ clear_bit(STATUS_RFKILL, &trans->status);
++ /* ... rfkill can call stop_device and set it false if needed */
++ iwl_trans_pcie_rf_kill(trans, hw_rfkill);
++
++ return 0;
++}
++
++static int iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ int ret;
++
++ mutex_lock(&trans_pcie->mutex);
++ ret = _iwl_trans_pcie_start_hw(trans, low_power);
++ mutex_unlock(&trans_pcie->mutex);
++
++ return ret;
++}
++
++static void iwl_trans_pcie_op_mode_leave(struct iwl_trans *trans)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ mutex_lock(&trans_pcie->mutex);
++
++ /* disable interrupts - don't enable HW RF kill interrupt */
++ spin_lock(&trans_pcie->irq_lock);
++ iwl_disable_interrupts(trans);
++ spin_unlock(&trans_pcie->irq_lock);
++
++ iwl_pcie_apm_stop(trans, true);
++
++ spin_lock(&trans_pcie->irq_lock);
++ iwl_disable_interrupts(trans);
++ spin_unlock(&trans_pcie->irq_lock);
++
++ iwl_pcie_disable_ict(trans);
++
++ mutex_unlock(&trans_pcie->mutex);
++
++ synchronize_irq(trans_pcie->pci_dev->irq);
++}
++
++static void iwl_trans_pcie_write8(struct iwl_trans *trans, u32 ofs, u8 val)
++{
++ writeb(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
++}
++
++static void iwl_trans_pcie_write32(struct iwl_trans *trans, u32 ofs, u32 val)
++{
++ writel(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
++}
++
++static u32 iwl_trans_pcie_read32(struct iwl_trans *trans, u32 ofs)
++{
++ return readl(IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
++}
++
++static u32 iwl_trans_pcie_read_prph(struct iwl_trans *trans, u32 reg)
++{
++ iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_RADDR,
++ ((reg & 0x000FFFFF) | (3 << 24)));
++ return iwl_trans_pcie_read32(trans, HBUS_TARG_PRPH_RDAT);
++}
++
++static void iwl_trans_pcie_write_prph(struct iwl_trans *trans, u32 addr,
++ u32 val)
++{
++ iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WADDR,
++ ((addr & 0x000FFFFF) | (3 << 24)));
++ iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WDAT, val);
++}
++
++static int iwl_pcie_dummy_napi_poll(struct napi_struct *napi, int budget)
++{
++ WARN_ON(1);
++ return 0;
++}
++
++static void iwl_trans_pcie_configure(struct iwl_trans *trans,
++ const struct iwl_trans_config *trans_cfg)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ trans_pcie->cmd_queue = trans_cfg->cmd_queue;
++ trans_pcie->cmd_fifo = trans_cfg->cmd_fifo;
++ trans_pcie->cmd_q_wdg_timeout = trans_cfg->cmd_q_wdg_timeout;
++ if (WARN_ON(trans_cfg->n_no_reclaim_cmds > MAX_NO_RECLAIM_CMDS))
++ trans_pcie->n_no_reclaim_cmds = 0;
++ else
++ trans_pcie->n_no_reclaim_cmds = trans_cfg->n_no_reclaim_cmds;
++ if (trans_pcie->n_no_reclaim_cmds)
++ memcpy(trans_pcie->no_reclaim_cmds, trans_cfg->no_reclaim_cmds,
++ trans_pcie->n_no_reclaim_cmds * sizeof(u8));
++
++ trans_pcie->rx_buf_size = trans_cfg->rx_buf_size;
++ trans_pcie->rx_page_order =
++ iwl_trans_get_rb_size_order(trans_pcie->rx_buf_size);
++
++ trans_pcie->wide_cmd_header = trans_cfg->wide_cmd_header;
++ trans_pcie->bc_table_dword = trans_cfg->bc_table_dword;
++ trans_pcie->scd_set_active = trans_cfg->scd_set_active;
++ trans_pcie->sw_csum_tx = trans_cfg->sw_csum_tx;
++
++ trans->command_groups = trans_cfg->command_groups;
++ trans->command_groups_size = trans_cfg->command_groups_size;
++
++ /* init ref_count to 1 (should be cleared when ucode is loaded) */
++ trans_pcie->ref_count = 1;
++
++ /* Initialize NAPI here - it should be before registering to mac80211
++ * in the opmode but after the HW struct is allocated.
++ * As this function may be called again in some corner cases don't
++ * do anything if NAPI was already initialized.
++ */
++ if (!trans_pcie->napi.poll) {
++ init_dummy_netdev(&trans_pcie->napi_dev);
++ netif_napi_add(&trans_pcie->napi_dev, &trans_pcie->napi,
++ iwl_pcie_dummy_napi_poll, 64);
++ }
++}
++
++void iwl_trans_pcie_free(struct iwl_trans *trans)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ int i;
++
++ synchronize_irq(trans_pcie->pci_dev->irq);
++
++ iwl_pcie_tx_free(trans);
++ iwl_pcie_rx_free(trans);
++
++ free_irq(trans_pcie->pci_dev->irq, trans);
++ iwl_pcie_free_ict(trans);
++
++ pci_disable_msi(trans_pcie->pci_dev);
++ iounmap(trans_pcie->hw_base);
++ pci_release_regions(trans_pcie->pci_dev);
++ pci_disable_device(trans_pcie->pci_dev);
++
++ if (trans_pcie->napi.poll)
++ netif_napi_del(&trans_pcie->napi);
++
++ iwl_pcie_free_fw_monitor(trans);
++
++ for_each_possible_cpu(i) {
++ struct iwl_tso_hdr_page *p =
++ per_cpu_ptr(trans_pcie->tso_hdr_page, i);
++
++ if (p->page)
++ __free_page(p->page);
++ }
++
++ free_percpu(trans_pcie->tso_hdr_page);
++ iwl_trans_free(trans);
++}
++
++static void iwl_trans_pcie_set_pmi(struct iwl_trans *trans, bool state)
++{
++ if (state)
++ set_bit(STATUS_TPOWER_PMI, &trans->status);
++ else
++ clear_bit(STATUS_TPOWER_PMI, &trans->status);
++}
++
++static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans,
++ unsigned long *flags)
++{
++ int ret;
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ spin_lock_irqsave(&trans_pcie->reg_lock, *flags);
++
++ if (trans_pcie->cmd_hold_nic_awake)
++ goto out;
++
++ /* this bit wakes up the NIC */
++ __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
++ udelay(2);
++
++ /*
++ * These bits say the device is running, and should keep running for
++ * at least a short while (at least as long as MAC_ACCESS_REQ stays 1),
++ * but they do not indicate that embedded SRAM is restored yet;
++ * 3945 and 4965 have volatile SRAM, and must save/restore contents
++ * to/from host DRAM when sleeping/waking for power-saving.
++ * Each direction takes approximately 1/4 millisecond; with this
++ * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a
++ * series of register accesses are expected (e.g. reading Event Log),
++ * to keep device from sleeping.
++ *
++ * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that
++ * SRAM is okay/restored. We don't check that here because this call
++ * is just for hardware register access; but GP1 MAC_SLEEP check is a
++ * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log).
++ *
++ * 5000 series and later (including 1000 series) have non-volatile SRAM,
++ * and do not save/restore SRAM when power cycling.
++ */
++ ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
++ (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
++ CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000);
++ if (unlikely(ret < 0)) {
++ iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI);
++ WARN_ONCE(1,
++ "Timeout waiting for hardware access (CSR_GP_CNTRL 0x%08x)\n",
++ iwl_read32(trans, CSR_GP_CNTRL));
++ spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags);
++ return false;
++ }
++
++out:
++ /*
++ * Fool sparse by faking we release the lock - sparse will
++ * track nic_access anyway.
++ */
++ __release(&trans_pcie->reg_lock);
++ return true;
++}
++
++static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans,
++ unsigned long *flags)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ lockdep_assert_held(&trans_pcie->reg_lock);
++
++ /*
++ * Fool sparse by faking we acquiring the lock - sparse will
++ * track nic_access anyway.
++ */
++ __acquire(&trans_pcie->reg_lock);
++
++ if (trans_pcie->cmd_hold_nic_awake)
++ goto out;
++
++ __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
++ /*
++ * Above we read the CSR_GP_CNTRL register, which will flush
++ * any previous writes, but we need the write that clears the
++ * MAC_ACCESS_REQ bit to be performed before any other writes
++ * scheduled on different CPUs (after we drop reg_lock).
++ */
++ mmiowb();
++out:
++ spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags);
++}
++
++static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr,
++ void *buf, int dwords)
++{
++ unsigned long flags;
++ int offs, ret = 0;
++ u32 *vals = buf;
++
++ if (iwl_trans_grab_nic_access(trans, &flags)) {
++ iwl_write32(trans, HBUS_TARG_MEM_RADDR, addr);
++ for (offs = 0; offs < dwords; offs++)
++ vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
++ iwl_trans_release_nic_access(trans, &flags);
++ } else {
++ ret = -EBUSY;
++ }
++ return ret;
++}
++
++static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr,
++ const void *buf, int dwords)
++{
++ unsigned long flags;
++ int offs, ret = 0;
++ const u32 *vals = buf;
++
++ if (iwl_trans_grab_nic_access(trans, &flags)) {
++ iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr);
++ for (offs = 0; offs < dwords; offs++)
++ iwl_write32(trans, HBUS_TARG_MEM_WDAT,
++ vals ? vals[offs] : 0);
++ iwl_trans_release_nic_access(trans, &flags);
++ } else {
++ ret = -EBUSY;
++ }
++ return ret;
++}
++
++static void iwl_trans_pcie_freeze_txq_timer(struct iwl_trans *trans,
++ unsigned long txqs,
++ bool freeze)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ int queue;
++
++ for_each_set_bit(queue, &txqs, BITS_PER_LONG) {
++ struct iwl_txq *txq = &trans_pcie->txq[queue];
++ unsigned long now;
++
++ spin_lock_bh(&txq->lock);
++
++ now = jiffies;
++
++ if (txq->frozen == freeze)
++ goto next_queue;
++
++ IWL_DEBUG_TX_QUEUES(trans, "%s TXQ %d\n",
++ freeze ? "Freezing" : "Waking", queue);
++
++ txq->frozen = freeze;
++
++ if (txq->q.read_ptr == txq->q.write_ptr)
++ goto next_queue;
++
++ if (freeze) {
++ if (unlikely(time_after(now,
++ txq->stuck_timer.expires))) {
++ /*
++ * The timer should have fired, maybe it is
++ * spinning right now on the lock.
++ */
++ goto next_queue;
++ }
++ /* remember how long until the timer fires */
++ txq->frozen_expiry_remainder =
++ txq->stuck_timer.expires - now;
++ del_timer(&txq->stuck_timer);
++ goto next_queue;
++ }
++
++ /*
++ * Wake a non-empty queue -> arm timer with the
++ * remainder before it froze
++ */
++ mod_timer(&txq->stuck_timer,
++ now + txq->frozen_expiry_remainder);
++
++next_queue:
++ spin_unlock_bh(&txq->lock);
++ }
++}
++
++static void iwl_trans_pcie_block_txq_ptrs(struct iwl_trans *trans, bool block)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ int i;
++
++ for (i = 0; i < trans->cfg->base_params->num_of_queues; i++) {
++ struct iwl_txq *txq = &trans_pcie->txq[i];
++
++ if (i == trans_pcie->cmd_queue)
++ continue;
++
++ spin_lock_bh(&txq->lock);
++
++ if (!block && !(WARN_ON_ONCE(!txq->block))) {
++ txq->block--;
++ if (!txq->block) {
++ iwl_write32(trans, HBUS_TARG_WRPTR,
++ txq->q.write_ptr | (i << 8));
++ }
++ } else if (block) {
++ txq->block++;
++ }
++
++ spin_unlock_bh(&txq->lock);
++ }
++}
++
++#define IWL_FLUSH_WAIT_MS 2000
++
++static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, u32 txq_bm)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ struct iwl_txq *txq;
++ struct iwl_queue *q;
++ int cnt;
++ unsigned long now = jiffies;
++ u32 scd_sram_addr;
++ u8 buf[16];
++ int ret = 0;
++
++ /* waiting for all the tx frames complete might take a while */
++ for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) {
++ u8 wr_ptr;
++
++ if (cnt == trans_pcie->cmd_queue)
++ continue;
++ if (!test_bit(cnt, trans_pcie->queue_used))
++ continue;
++ if (!(BIT(cnt) & txq_bm))
++ continue;
++
++ IWL_DEBUG_TX_QUEUES(trans, "Emptying queue %d...\n", cnt);
++ txq = &trans_pcie->txq[cnt];
++ q = &txq->q;
++ wr_ptr = ACCESS_ONCE(q->write_ptr);
++
++ while (q->read_ptr != ACCESS_ONCE(q->write_ptr) &&
++ !time_after(jiffies,
++ now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS))) {
++ u8 write_ptr = ACCESS_ONCE(q->write_ptr);
++
++ if (WARN_ONCE(wr_ptr != write_ptr,
++ "WR pointer moved while flushing %d -> %d\n",
++ wr_ptr, write_ptr))
++ return -ETIMEDOUT;
++ msleep(1);
++ }
++
++ if (q->read_ptr != q->write_ptr) {
++ IWL_ERR(trans,
++ "fail to flush all tx fifo queues Q %d\n", cnt);
++ ret = -ETIMEDOUT;
++ break;
++ }
++ IWL_DEBUG_TX_QUEUES(trans, "Queue %d is now empty.\n", cnt);
++ }
++
++ if (!ret)
++ return 0;
++
++ IWL_ERR(trans, "Current SW read_ptr %d write_ptr %d\n",
++ txq->q.read_ptr, txq->q.write_ptr);
++
++ scd_sram_addr = trans_pcie->scd_base_addr +
++ SCD_TX_STTS_QUEUE_OFFSET(txq->q.id);
++ iwl_trans_read_mem_bytes(trans, scd_sram_addr, buf, sizeof(buf));
++
++ iwl_print_hex_error(trans, buf, sizeof(buf));
++
++ for (cnt = 0; cnt < FH_TCSR_CHNL_NUM; cnt++)
++ IWL_ERR(trans, "FH TRBs(%d) = 0x%08x\n", cnt,
++ iwl_read_direct32(trans, FH_TX_TRB_REG(cnt)));
++
++ for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) {
++ u32 status = iwl_read_prph(trans, SCD_QUEUE_STATUS_BITS(cnt));
++ u8 fifo = (status >> SCD_QUEUE_STTS_REG_POS_TXF) & 0x7;
++ bool active = !!(status & BIT(SCD_QUEUE_STTS_REG_POS_ACTIVE));
++ u32 tbl_dw =
++ iwl_trans_read_mem32(trans, trans_pcie->scd_base_addr +
++ SCD_TRANS_TBL_OFFSET_QUEUE(cnt));
++
++ if (cnt & 0x1)
++ tbl_dw = (tbl_dw & 0xFFFF0000) >> 16;
++ else
++ tbl_dw = tbl_dw & 0x0000FFFF;
++
++ IWL_ERR(trans,
++ "Q %d is %sactive and mapped to fifo %d ra_tid 0x%04x [%d,%d]\n",
++ cnt, active ? "" : "in", fifo, tbl_dw,
++ iwl_read_prph(trans, SCD_QUEUE_RDPTR(cnt)) &
++ (TFD_QUEUE_SIZE_MAX - 1),
++ iwl_read_prph(trans, SCD_QUEUE_WRPTR(cnt)));
++ }
++
++ return ret;
++}
++
++static void iwl_trans_pcie_set_bits_mask(struct iwl_trans *trans, u32 reg,
++ u32 mask, u32 value)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ unsigned long flags;
++
++ spin_lock_irqsave(&trans_pcie->reg_lock, flags);
++ __iwl_trans_pcie_set_bits_mask(trans, reg, mask, value);
++ spin_unlock_irqrestore(&trans_pcie->reg_lock, flags);
++}
++
++void iwl_trans_pcie_ref(struct iwl_trans *trans)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ unsigned long flags;
++
++ if (iwlwifi_mod_params.d0i3_disable)
++ return;
++
++ spin_lock_irqsave(&trans_pcie->ref_lock, flags);
++ IWL_DEBUG_RPM(trans, "ref_counter: %d\n", trans_pcie->ref_count);
++ trans_pcie->ref_count++;
++ spin_unlock_irqrestore(&trans_pcie->ref_lock, flags);
++}
++
++void iwl_trans_pcie_unref(struct iwl_trans *trans)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ unsigned long flags;
++
++ if (iwlwifi_mod_params.d0i3_disable)
++ return;
++
++ spin_lock_irqsave(&trans_pcie->ref_lock, flags);
++ IWL_DEBUG_RPM(trans, "ref_counter: %d\n", trans_pcie->ref_count);
++ if (WARN_ON_ONCE(trans_pcie->ref_count == 0)) {
++ spin_unlock_irqrestore(&trans_pcie->ref_lock, flags);
++ return;
++ }
++ trans_pcie->ref_count--;
++ spin_unlock_irqrestore(&trans_pcie->ref_lock, flags);
++}
++
++static const char *get_csr_string(int cmd)
++{
++#define IWL_CMD(x) case x: return #x
++ switch (cmd) {
++ IWL_CMD(CSR_HW_IF_CONFIG_REG);
++ IWL_CMD(CSR_INT_COALESCING);
++ IWL_CMD(CSR_INT);
++ IWL_CMD(CSR_INT_MASK);
++ IWL_CMD(CSR_FH_INT_STATUS);
++ IWL_CMD(CSR_GPIO_IN);
++ IWL_CMD(CSR_RESET);
++ IWL_CMD(CSR_GP_CNTRL);
++ IWL_CMD(CSR_HW_REV);
++ IWL_CMD(CSR_EEPROM_REG);
++ IWL_CMD(CSR_EEPROM_GP);
++ IWL_CMD(CSR_OTP_GP_REG);
++ IWL_CMD(CSR_GIO_REG);
++ IWL_CMD(CSR_GP_UCODE_REG);
++ IWL_CMD(CSR_GP_DRIVER_REG);
++ IWL_CMD(CSR_UCODE_DRV_GP1);
++ IWL_CMD(CSR_UCODE_DRV_GP2);
++ IWL_CMD(CSR_LED_REG);
++ IWL_CMD(CSR_DRAM_INT_TBL_REG);
++ IWL_CMD(CSR_GIO_CHICKEN_BITS);
++ IWL_CMD(CSR_ANA_PLL_CFG);
++ IWL_CMD(CSR_HW_REV_WA_REG);
++ IWL_CMD(CSR_MONITOR_STATUS_REG);
++ IWL_CMD(CSR_DBG_HPET_MEM_REG);
++ default:
++ return "UNKNOWN";
++ }
++#undef IWL_CMD
++}
++
++void iwl_pcie_dump_csr(struct iwl_trans *trans)
++{
++ int i;
++ static const u32 csr_tbl[] = {
++ CSR_HW_IF_CONFIG_REG,
++ CSR_INT_COALESCING,
++ CSR_INT,
++ CSR_INT_MASK,
++ CSR_FH_INT_STATUS,
++ CSR_GPIO_IN,
++ CSR_RESET,
++ CSR_GP_CNTRL,
++ CSR_HW_REV,
++ CSR_EEPROM_REG,
++ CSR_EEPROM_GP,
++ CSR_OTP_GP_REG,
++ CSR_GIO_REG,
++ CSR_GP_UCODE_REG,
++ CSR_GP_DRIVER_REG,
++ CSR_UCODE_DRV_GP1,
++ CSR_UCODE_DRV_GP2,
++ CSR_LED_REG,
++ CSR_DRAM_INT_TBL_REG,
++ CSR_GIO_CHICKEN_BITS,
++ CSR_ANA_PLL_CFG,
++ CSR_MONITOR_STATUS_REG,
++ CSR_HW_REV_WA_REG,
++ CSR_DBG_HPET_MEM_REG
++ };
++ IWL_ERR(trans, "CSR values:\n");
++ IWL_ERR(trans, "(2nd byte of CSR_INT_COALESCING is "
++ "CSR_INT_PERIODIC_REG)\n");
++ for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) {
++ IWL_ERR(trans, " %25s: 0X%08x\n",
++ get_csr_string(csr_tbl[i]),
++ iwl_read32(trans, csr_tbl[i]));
++ }
++}
++
++#ifdef CONFIG_IWLWIFI_DEBUGFS
++/* create and remove of files */
++#define DEBUGFS_ADD_FILE(name, parent, mode) do { \
++ if (!debugfs_create_file(#name, mode, parent, trans, \
++ &iwl_dbgfs_##name##_ops)) \
++ goto err; \
++} while (0)
++
++/* file operation */
++#define DEBUGFS_READ_FILE_OPS(name) \
++static const struct file_operations iwl_dbgfs_##name##_ops = { \
++ .read = iwl_dbgfs_##name##_read, \
++ .open = simple_open, \
++ .llseek = generic_file_llseek, \
++};
++
++#define DEBUGFS_WRITE_FILE_OPS(name) \
++static const struct file_operations iwl_dbgfs_##name##_ops = { \
++ .write = iwl_dbgfs_##name##_write, \
++ .open = simple_open, \
++ .llseek = generic_file_llseek, \
++};
++
++#define DEBUGFS_READ_WRITE_FILE_OPS(name) \
++static const struct file_operations iwl_dbgfs_##name##_ops = { \
++ .write = iwl_dbgfs_##name##_write, \
++ .read = iwl_dbgfs_##name##_read, \
++ .open = simple_open, \
++ .llseek = generic_file_llseek, \
++};
++
++static ssize_t iwl_dbgfs_tx_queue_read(struct file *file,
++ char __user *user_buf,
++ size_t count, loff_t *ppos)
++{
++ struct iwl_trans *trans = file->private_data;
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ struct iwl_txq *txq;
++ struct iwl_queue *q;
++ char *buf;
++ int pos = 0;
++ int cnt;
++ int ret;
++ size_t bufsz;
++
++ bufsz = sizeof(char) * 75 * trans->cfg->base_params->num_of_queues;
++
++ if (!trans_pcie->txq)
++ return -EAGAIN;
++
++ buf = kzalloc(bufsz, GFP_KERNEL);
++ if (!buf)
++ return -ENOMEM;
++
++ for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) {
++ txq = &trans_pcie->txq[cnt];
++ q = &txq->q;
++ pos += scnprintf(buf + pos, bufsz - pos,
++ "hwq %.2d: read=%u write=%u use=%d stop=%d need_update=%d frozen=%d%s\n",
++ cnt, q->read_ptr, q->write_ptr,
++ !!test_bit(cnt, trans_pcie->queue_used),
++ !!test_bit(cnt, trans_pcie->queue_stopped),
++ txq->need_update, txq->frozen,
++ (cnt == trans_pcie->cmd_queue ? " HCMD" : ""));
++ }
++ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
++ kfree(buf);
++ return ret;
++}
++
++static ssize_t iwl_dbgfs_rx_queue_read(struct file *file,
++ char __user *user_buf,
++ size_t count, loff_t *ppos)
++{
++ struct iwl_trans *trans = file->private_data;
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ struct iwl_rxq *rxq = &trans_pcie->rxq;
++ char buf[256];
++ int pos = 0;
++ const size_t bufsz = sizeof(buf);
++
++ pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n",
++ rxq->read);
++ pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n",
++ rxq->write);
++ pos += scnprintf(buf + pos, bufsz - pos, "write_actual: %u\n",
++ rxq->write_actual);
++ pos += scnprintf(buf + pos, bufsz - pos, "need_update: %d\n",
++ rxq->need_update);
++ pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
++ rxq->free_count);
++ if (rxq->rb_stts) {
++ pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
++ le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF);
++ } else {
++ pos += scnprintf(buf + pos, bufsz - pos,
++ "closed_rb_num: Not Allocated\n");
++ }
++ return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
++}
++
++static ssize_t iwl_dbgfs_interrupt_read(struct file *file,
++ char __user *user_buf,
++ size_t count, loff_t *ppos)
++{
++ struct iwl_trans *trans = file->private_data;
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
++
++ int pos = 0;
++ char *buf;
++ int bufsz = 24 * 64; /* 24 items * 64 char per item */
++ ssize_t ret;
++
++ buf = kzalloc(bufsz, GFP_KERNEL);
++ if (!buf)
++ return -ENOMEM;
++
++ pos += scnprintf(buf + pos, bufsz - pos,
++ "Interrupt Statistics Report:\n");
++
++ pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
++ isr_stats->hw);
++ pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
++ isr_stats->sw);
++ if (isr_stats->sw || isr_stats->hw) {
++ pos += scnprintf(buf + pos, bufsz - pos,
++ "\tLast Restarting Code: 0x%X\n",
++ isr_stats->err_code);
++ }
++#ifdef CONFIG_IWLWIFI_DEBUG
++ pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
++ isr_stats->sch);
++ pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
++ isr_stats->alive);
++#endif
++ pos += scnprintf(buf + pos, bufsz - pos,
++ "HW RF KILL switch toggled:\t %u\n", isr_stats->rfkill);
++
++ pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
++ isr_stats->ctkill);
++
++ pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
++ isr_stats->wakeup);
++
++ pos += scnprintf(buf + pos, bufsz - pos,
++ "Rx command responses:\t\t %u\n", isr_stats->rx);
++
++ pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
++ isr_stats->tx);
++
++ pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
++ isr_stats->unhandled);
++
++ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
++ kfree(buf);
++ return ret;
++}
++
++static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
++ const char __user *user_buf,
++ size_t count, loff_t *ppos)
++{
++ struct iwl_trans *trans = file->private_data;
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
++
++ char buf[8];
++ int buf_size;
++ u32 reset_flag;
++
++ memset(buf, 0, sizeof(buf));
++ buf_size = min(count, sizeof(buf) - 1);
++ if (copy_from_user(buf, user_buf, buf_size))
++ return -EFAULT;
++ if (sscanf(buf, "%x", &reset_flag) != 1)
++ return -EFAULT;
++ if (reset_flag == 0)
++ memset(isr_stats, 0, sizeof(*isr_stats));
++
++ return count;
++}
++
++static ssize_t iwl_dbgfs_csr_write(struct file *file,
++ const char __user *user_buf,
++ size_t count, loff_t *ppos)
++{
++ struct iwl_trans *trans = file->private_data;
++ char buf[8];
++ int buf_size;
++ int csr;
++
++ memset(buf, 0, sizeof(buf));
++ buf_size = min(count, sizeof(buf) - 1);
++ if (copy_from_user(buf, user_buf, buf_size))
++ return -EFAULT;
++ if (sscanf(buf, "%d", &csr) != 1)
++ return -EFAULT;
++
++ iwl_pcie_dump_csr(trans);
++
++ return count;
++}
++
++static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
++ char __user *user_buf,
++ size_t count, loff_t *ppos)
++{
++ struct iwl_trans *trans = file->private_data;
++ char *buf = NULL;
++ ssize_t ret;
++
++ ret = iwl_dump_fh(trans, &buf);
++ if (ret < 0)
++ return ret;
++ if (!buf)
++ return -EINVAL;
++ ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
++ kfree(buf);
++ return ret;
++}
++
++DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
++DEBUGFS_READ_FILE_OPS(fh_reg);
++DEBUGFS_READ_FILE_OPS(rx_queue);
++DEBUGFS_READ_FILE_OPS(tx_queue);
++DEBUGFS_WRITE_FILE_OPS(csr);
++
++/* Create the debugfs files and directories */
++int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans)
++{
++ struct dentry *dir = trans->dbgfs_dir;
++
++ DEBUGFS_ADD_FILE(rx_queue, dir, S_IRUSR);
++ DEBUGFS_ADD_FILE(tx_queue, dir, S_IRUSR);
++ DEBUGFS_ADD_FILE(interrupt, dir, S_IWUSR | S_IRUSR);
++ DEBUGFS_ADD_FILE(csr, dir, S_IWUSR);
++ DEBUGFS_ADD_FILE(fh_reg, dir, S_IRUSR);
++ return 0;
++
++err:
++ IWL_ERR(trans, "failed to create the trans debugfs entry\n");
++ return -ENOMEM;
++}
++#endif /*CONFIG_IWLWIFI_DEBUGFS */
++
++static u32 iwl_trans_pcie_get_cmdlen(struct iwl_tfd *tfd)
++{
++ u32 cmdlen = 0;
++ int i;
++
++ for (i = 0; i < IWL_NUM_OF_TBS; i++)
++ cmdlen += iwl_pcie_tfd_tb_get_len(tfd, i);
++
++ return cmdlen;
++}
++
++static u32 iwl_trans_pcie_dump_rbs(struct iwl_trans *trans,
++ struct iwl_fw_error_dump_data **data,
++ int allocated_rb_nums)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ int max_len = PAGE_SIZE << trans_pcie->rx_page_order;
++ struct iwl_rxq *rxq = &trans_pcie->rxq;
++ u32 i, r, j, rb_len = 0;
++
++ spin_lock(&rxq->lock);
++
++ r = le16_to_cpu(ACCESS_ONCE(rxq->rb_stts->closed_rb_num)) & 0x0FFF;
++
++ for (i = rxq->read, j = 0;
++ i != r && j < allocated_rb_nums;
++ i = (i + 1) & RX_QUEUE_MASK, j++) {
++ struct iwl_rx_mem_buffer *rxb = rxq->queue[i];
++ struct iwl_fw_error_dump_rb *rb;
++
++ dma_unmap_page(trans->dev, rxb->page_dma, max_len,
++ DMA_FROM_DEVICE);
++
++ rb_len += sizeof(**data) + sizeof(*rb) + max_len;
++
++ (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RB);
++ (*data)->len = cpu_to_le32(sizeof(*rb) + max_len);
++ rb = (void *)(*data)->data;
++ rb->index = cpu_to_le32(i);
++ memcpy(rb->data, page_address(rxb->page), max_len);
++ /* remap the page for the free benefit */
++ rxb->page_dma = dma_map_page(trans->dev, rxb->page, 0,
++ max_len,
++ DMA_FROM_DEVICE);
++
++ *data = iwl_fw_error_next_data(*data);
++ }
++
++ spin_unlock(&rxq->lock);
++
++ return rb_len;
++}
++#define IWL_CSR_TO_DUMP (0x250)
++
++static u32 iwl_trans_pcie_dump_csr(struct iwl_trans *trans,
++ struct iwl_fw_error_dump_data **data)
++{
++ u32 csr_len = sizeof(**data) + IWL_CSR_TO_DUMP;
++ __le32 *val;
++ int i;
++
++ (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_CSR);
++ (*data)->len = cpu_to_le32(IWL_CSR_TO_DUMP);
++ val = (void *)(*data)->data;
++
++ for (i = 0; i < IWL_CSR_TO_DUMP; i += 4)
++ *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
++
++ *data = iwl_fw_error_next_data(*data);
++
++ return csr_len;
++}
++
++static u32 iwl_trans_pcie_fh_regs_dump(struct iwl_trans *trans,
++ struct iwl_fw_error_dump_data **data)
++{
++ u32 fh_regs_len = FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND;
++ unsigned long flags;
++ __le32 *val;
++ int i;
++
++ if (!iwl_trans_grab_nic_access(trans, &flags))
++ return 0;
++
++ (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FH_REGS);
++ (*data)->len = cpu_to_le32(fh_regs_len);
++ val = (void *)(*data)->data;
++
++ for (i = FH_MEM_LOWER_BOUND; i < FH_MEM_UPPER_BOUND; i += sizeof(u32))
++ *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
++
++ iwl_trans_release_nic_access(trans, &flags);
++
++ *data = iwl_fw_error_next_data(*data);
++
++ return sizeof(**data) + fh_regs_len;
++}
++
++static u32
++iwl_trans_pci_dump_marbh_monitor(struct iwl_trans *trans,
++ struct iwl_fw_error_dump_fw_mon *fw_mon_data,
++ u32 monitor_len)
++{
++ u32 buf_size_in_dwords = (monitor_len >> 2);
++ u32 *buffer = (u32 *)fw_mon_data->data;
++ unsigned long flags;
++ u32 i;
++
++ if (!iwl_trans_grab_nic_access(trans, &flags))
++ return 0;
++
++ iwl_write_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x1);
++ for (i = 0; i < buf_size_in_dwords; i++)
++ buffer[i] = iwl_read_prph_no_grab(trans,
++ MON_DMARB_RD_DATA_ADDR);
++ iwl_write_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x0);
++
++ iwl_trans_release_nic_access(trans, &flags);
++
++ return monitor_len;
++}
++
++static u32
++iwl_trans_pcie_dump_monitor(struct iwl_trans *trans,
++ struct iwl_fw_error_dump_data **data,
++ u32 monitor_len)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ u32 len = 0;
++
++ if ((trans_pcie->fw_mon_page &&
++ trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) ||
++ trans->dbg_dest_tlv) {
++ struct iwl_fw_error_dump_fw_mon *fw_mon_data;
++ u32 base, write_ptr, wrap_cnt;
++
++ /* If there was a dest TLV - use the values from there */
++ if (trans->dbg_dest_tlv) {
++ write_ptr =
++ le32_to_cpu(trans->dbg_dest_tlv->write_ptr_reg);
++ wrap_cnt = le32_to_cpu(trans->dbg_dest_tlv->wrap_count);
++ base = le32_to_cpu(trans->dbg_dest_tlv->base_reg);
++ } else {
++ base = MON_BUFF_BASE_ADDR;
++ write_ptr = MON_BUFF_WRPTR;
++ wrap_cnt = MON_BUFF_CYCLE_CNT;
++ }
++
++ (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FW_MONITOR);
++ fw_mon_data = (void *)(*data)->data;
++ fw_mon_data->fw_mon_wr_ptr =
++ cpu_to_le32(iwl_read_prph(trans, write_ptr));
++ fw_mon_data->fw_mon_cycle_cnt =
++ cpu_to_le32(iwl_read_prph(trans, wrap_cnt));
++ fw_mon_data->fw_mon_base_ptr =
++ cpu_to_le32(iwl_read_prph(trans, base));
++
++ len += sizeof(**data) + sizeof(*fw_mon_data);
++ if (trans_pcie->fw_mon_page) {
++ /*
++ * The firmware is now asserted, it won't write anything
++ * to the buffer. CPU can take ownership to fetch the
++ * data. The buffer will be handed back to the device
++ * before the firmware will be restarted.
++ */
++ dma_sync_single_for_cpu(trans->dev,
++ trans_pcie->fw_mon_phys,
++ trans_pcie->fw_mon_size,
++ DMA_FROM_DEVICE);
++ memcpy(fw_mon_data->data,
++ page_address(trans_pcie->fw_mon_page),
++ trans_pcie->fw_mon_size);
++
++ monitor_len = trans_pcie->fw_mon_size;
++ } else if (trans->dbg_dest_tlv->monitor_mode == SMEM_MODE) {
++ /*
++ * Update pointers to reflect actual values after
++ * shifting
++ */
++ base = iwl_read_prph(trans, base) <<
++ trans->dbg_dest_tlv->base_shift;
++ iwl_trans_read_mem(trans, base, fw_mon_data->data,
++ monitor_len / sizeof(u32));
++ } else if (trans->dbg_dest_tlv->monitor_mode == MARBH_MODE) {
++ monitor_len =
++ iwl_trans_pci_dump_marbh_monitor(trans,
++ fw_mon_data,
++ monitor_len);
++ } else {
++ /* Didn't match anything - output no monitor data */
++ monitor_len = 0;
++ }
++
++ len += monitor_len;
++ (*data)->len = cpu_to_le32(monitor_len + sizeof(*fw_mon_data));
++ }
++
++ return len;
++}
++
++static struct iwl_trans_dump_data
++*iwl_trans_pcie_dump_data(struct iwl_trans *trans,
++ const struct iwl_fw_dbg_trigger_tlv *trigger)
++{
++ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++ struct iwl_fw_error_dump_data *data;
++ struct iwl_txq *cmdq = &trans_pcie->txq[trans_pcie->cmd_queue];
++ struct iwl_fw_error_dump_txcmd *txcmd;
++ struct iwl_trans_dump_data *dump_data;
++ u32 len, num_rbs;
++ u32 monitor_len;
++ int i, ptr;
++ bool dump_rbs = test_bit(STATUS_FW_ERROR, &trans->status);
++
++ /* transport dump header */
++ len = sizeof(*dump_data);
++
++ /* host commands */
++ len += sizeof(*data) +
++ cmdq->q.n_window * (sizeof(*txcmd) + TFD_MAX_PAYLOAD_SIZE);
++
++ /* FW monitor */
++ if (trans_pcie->fw_mon_page) {
++ len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_fw_mon) +
++ trans_pcie->fw_mon_size;
++ monitor_len = trans_pcie->fw_mon_size;
++ } else if (trans->dbg_dest_tlv) {
++ u32 base, end;
++
++ base = le32_to_cpu(trans->dbg_dest_tlv->base_reg);
++ end = le32_to_cpu(trans->dbg_dest_tlv->end_reg);
++
++ base = iwl_read_prph(trans, base) <<
++ trans->dbg_dest_tlv->base_shift;
++ end = iwl_read_prph(trans, end) <<
++ trans->dbg_dest_tlv->end_shift;
++
++ /* Make "end" point to the actual end */
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000 ||
++ trans->dbg_dest_tlv->monitor_mode == MARBH_MODE)
++ end += (1 << trans->dbg_dest_tlv->end_shift);
++ monitor_len = end - base;
++ len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_fw_mon) +
++ monitor_len;
++ } else {
++ monitor_len = 0;
++ }
++
++ if (trigger && (trigger->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)) {
++ dump_data = vzalloc(len);
++ if (!dump_data)
++ return NULL;
++
++ data = (void *)dump_data->data;
++ len = iwl_trans_pcie_dump_monitor(trans, &data, monitor_len);
++ dump_data->len = len;
++
++ return dump_data;
++ }
++
++ /* CSR registers */
++ len += sizeof(*data) + IWL_CSR_TO_DUMP;
++
++ /* FH registers */
++ len += sizeof(*data) + (FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND);
++
++ if (dump_rbs) {
++ /* RBs */
++ num_rbs = le16_to_cpu(ACCESS_ONCE(
++ trans_pcie->rxq.rb_stts->closed_rb_num))
++ & 0x0FFF;
++ num_rbs = (num_rbs - trans_pcie->rxq.read) & RX_QUEUE_MASK;
++ len += num_rbs * (sizeof(*data) +
++ sizeof(struct iwl_fw_error_dump_rb) +
++ (PAGE_SIZE << trans_pcie->rx_page_order));
++ }
++
++ dump_data = vzalloc(len);
++ if (!dump_data)
++ return NULL;
++
++ len = 0;
++ data = (void *)dump_data->data;
++ data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXCMD);
++ txcmd = (void *)data->data;
++ spin_lock_bh(&cmdq->lock);
++ ptr = cmdq->q.write_ptr;
++ for (i = 0; i < cmdq->q.n_window; i++) {
++ u8 idx = get_cmd_index(&cmdq->q, ptr);
++ u32 caplen, cmdlen;
++
++ cmdlen = iwl_trans_pcie_get_cmdlen(&cmdq->tfds[ptr]);
++ caplen = min_t(u32, TFD_MAX_PAYLOAD_SIZE, cmdlen);
++
++ if (cmdlen) {
++ len += sizeof(*txcmd) + caplen;
++ txcmd->cmdlen = cpu_to_le32(cmdlen);
++ txcmd->caplen = cpu_to_le32(caplen);
++ memcpy(txcmd->data, cmdq->entries[idx].cmd, caplen);
++ txcmd = (void *)((u8 *)txcmd->data + caplen);
++ }
++
++ ptr = iwl_queue_dec_wrap(ptr);
++ }
++ spin_unlock_bh(&cmdq->lock);
++
++ data->len = cpu_to_le32(len);
++ len += sizeof(*data);
++ data = iwl_fw_error_next_data(data);
++
++ len += iwl_trans_pcie_dump_csr(trans, &data);
++ len += iwl_trans_pcie_fh_regs_dump(trans, &data);
++ if (dump_rbs)
++ len += iwl_trans_pcie_dump_rbs(trans, &data, num_rbs);
++
++ len += iwl_trans_pcie_dump_monitor(trans, &data, monitor_len);
++
++ dump_data->len = len;
++
++ return dump_data;
++}
++
++static const struct iwl_trans_ops trans_ops_pcie = {
++ .start_hw = iwl_trans_pcie_start_hw,
++ .op_mode_leave = iwl_trans_pcie_op_mode_leave,
++ .fw_alive = iwl_trans_pcie_fw_alive,
++ .start_fw = iwl_trans_pcie_start_fw,
++ .stop_device = iwl_trans_pcie_stop_device,
++
++ .d3_suspend = iwl_trans_pcie_d3_suspend,
++ .d3_resume = iwl_trans_pcie_d3_resume,
++
++ .send_cmd = iwl_trans_pcie_send_hcmd,
++
++ .tx = iwl_trans_pcie_tx,
++ .reclaim = iwl_trans_pcie_reclaim,
++
++ .txq_disable = iwl_trans_pcie_txq_disable,
++ .txq_enable = iwl_trans_pcie_txq_enable,
++
++ .wait_tx_queue_empty = iwl_trans_pcie_wait_txq_empty,
++ .freeze_txq_timer = iwl_trans_pcie_freeze_txq_timer,
++ .block_txq_ptrs = iwl_trans_pcie_block_txq_ptrs,
++
++ .write8 = iwl_trans_pcie_write8,
++ .write32 = iwl_trans_pcie_write32,
++ .read32 = iwl_trans_pcie_read32,
++ .read_prph = iwl_trans_pcie_read_prph,
++ .write_prph = iwl_trans_pcie_write_prph,
++ .read_mem = iwl_trans_pcie_read_mem,
++ .write_mem = iwl_trans_pcie_write_mem,
++ .configure = iwl_trans_pcie_configure,
++ .set_pmi = iwl_trans_pcie_set_pmi,
++ .grab_nic_access = iwl_trans_pcie_grab_nic_access,
++ .release_nic_access = iwl_trans_pcie_release_nic_access,
++ .set_bits_mask = iwl_trans_pcie_set_bits_mask,
++
++ .ref = iwl_trans_pcie_ref,
++ .unref = iwl_trans_pcie_unref,
++
++ .dump_data = iwl_trans_pcie_dump_data,
++};
++
++struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
++ const struct pci_device_id *ent,
++ const struct iwl_cfg *cfg)
++{
++ struct iwl_trans_pcie *trans_pcie;
++ struct iwl_trans *trans;
++ u16 pci_cmd;
++ int ret;
++
++ trans = iwl_trans_alloc(sizeof(struct iwl_trans_pcie),
++ &pdev->dev, cfg, &trans_ops_pcie, 0);
++ if (!trans)
++ return ERR_PTR(-ENOMEM);
++
++ trans->max_skb_frags = IWL_PCIE_MAX_FRAGS;
++
++ trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
++
++ trans_pcie->trans = trans;
++ spin_lock_init(&trans_pcie->irq_lock);
++ spin_lock_init(&trans_pcie->reg_lock);
++ spin_lock_init(&trans_pcie->ref_lock);
++ mutex_init(&trans_pcie->mutex);
++ init_waitqueue_head(&trans_pcie->ucode_write_waitq);
++ trans_pcie->tso_hdr_page = alloc_percpu(struct iwl_tso_hdr_page);
++ if (!trans_pcie->tso_hdr_page) {
++ ret = -ENOMEM;
++ goto out_no_pci;
++ }
++
++ ret = pci_enable_device(pdev);
++ if (ret)
++ goto out_no_pci;
++
++ if (!cfg->base_params->pcie_l1_allowed) {
++ /*
++ * W/A - seems to solve weird behavior. We need to remove this
++ * if we don't want to stay in L1 all the time. This wastes a
++ * lot of power.
++ */
++ pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
++ PCIE_LINK_STATE_L1 |
++ PCIE_LINK_STATE_CLKPM);
++ }
++
++ pci_set_master(pdev);
++
++ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
++ if (!ret)
++ ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
++ if (ret) {
++ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
++ if (!ret)
++ ret = pci_set_consistent_dma_mask(pdev,
++ DMA_BIT_MASK(32));
++ /* both attempts failed: */
++ if (ret) {
++ dev_err(&pdev->dev, "No suitable DMA available\n");
++ goto out_pci_disable_device;
++ }
++ }
++
++ ret = pci_request_regions(pdev, DRV_NAME);
++ if (ret) {
++ dev_err(&pdev->dev, "pci_request_regions failed\n");
++ goto out_pci_disable_device;
++ }
++
++ trans_pcie->hw_base = pci_ioremap_bar(pdev, 0);
++ if (!trans_pcie->hw_base) {
++ dev_err(&pdev->dev, "pci_ioremap_bar failed\n");
++ ret = -ENODEV;
++ goto out_pci_release_regions;
++ }
++
++ /* We disable the RETRY_TIMEOUT register (0x41) to keep
++ * PCI Tx retries from interfering with C3 CPU state */
++ pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
++
++ trans->dev = &pdev->dev;
++ trans_pcie->pci_dev = pdev;
++ iwl_disable_interrupts(trans);
++
++ ret = pci_enable_msi(pdev);
++ if (ret) {
++ dev_err(&pdev->dev, "pci_enable_msi failed(0X%x)\n", ret);
++ /* enable rfkill interrupt: hw bug w/a */
++ pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
++ if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
++ pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
++ pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
++ }
++ }
++
++ trans->hw_rev = iwl_read32(trans, CSR_HW_REV);
++ /*
++ * In the 8000 HW family the format of the 4 bytes of CSR_HW_REV have
++ * changed, and now the revision step also includes bit 0-1 (no more
++ * "dash" value). To keep hw_rev backwards compatible - we'll store it
++ * in the old format.
++ */
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
++ unsigned long flags;
++
++ trans->hw_rev = (trans->hw_rev & 0xfff0) |
++ (CSR_HW_REV_STEP(trans->hw_rev << 2) << 2);
++
++ ret = iwl_pcie_prepare_card_hw(trans);
++ if (ret) {
++ IWL_WARN(trans, "Exit HW not ready\n");
++ goto out_pci_disable_msi;
++ }
++
++ /*
++ * in-order to recognize C step driver should read chip version
++ * id located at the AUX bus MISC address space.
++ */
++ iwl_set_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
++ udelay(2);
++
++ ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
++ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
++ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
++ 25000);
++ if (ret < 0) {
++ IWL_DEBUG_INFO(trans, "Failed to wake up the nic\n");
++ goto out_pci_disable_msi;
++ }
++
++ if (iwl_trans_grab_nic_access(trans, &flags)) {
++ u32 hw_step;
++
++ hw_step = iwl_read_prph_no_grab(trans, WFPM_CTRL_REG);
++ hw_step |= ENABLE_WFPM;
++ iwl_write_prph_no_grab(trans, WFPM_CTRL_REG, hw_step);
++ hw_step = iwl_read_prph_no_grab(trans, AUX_MISC_REG);
++ hw_step = (hw_step >> HW_STEP_LOCATION_BITS) & 0xF;
++ if (hw_step == 0x3)
++ trans->hw_rev = (trans->hw_rev & 0xFFFFFFF3) |
++ (SILICON_C_STEP << 2);
++ iwl_trans_release_nic_access(trans, &flags);
++ }
++ }
++
++ trans->hw_id = (pdev->device << 16) + pdev->subsystem_device;
++ snprintf(trans->hw_id_str, sizeof(trans->hw_id_str),
++ "PCI ID: 0x%04X:0x%04X", pdev->device, pdev->subsystem_device);
++
++ /* Initialize the wait queue for commands */
++ init_waitqueue_head(&trans_pcie->wait_command_queue);
++
++ ret = iwl_pcie_alloc_ict(trans);
++ if (ret)
++ goto out_pci_disable_msi;
++
++ ret = request_threaded_irq(pdev->irq, iwl_pcie_isr,
++ iwl_pcie_irq_handler,
++ IRQF_SHARED, DRV_NAME, trans);
++ if (ret) {
++ IWL_ERR(trans, "Error allocating IRQ %d\n", pdev->irq);
++ goto out_free_ict;
++ }
++
++ trans_pcie->inta_mask = CSR_INI_SET_MASK;
++
++ return trans;
++
++out_free_ict:
++ iwl_pcie_free_ict(trans);
++out_pci_disable_msi:
++ pci_disable_msi(pdev);
++out_pci_release_regions:
++ pci_release_regions(pdev);
++out_pci_disable_device:
++ pci_disable_device(pdev);
++out_no_pci:
++ free_percpu(trans_pcie->tso_hdr_page);
++ iwl_trans_free(trans);
++ return ERR_PTR(ret);
++}
+diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c
+index 88bf80a942b4..9faf69875fab 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/drv.c
++++ b/drivers/net/wireless/iwlwifi/pcie/drv.c
+@@ -382,6 +382,7 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
+ {IWL_PCI_DEVICE(0x095B, 0x5310, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095B, 0x5302, iwl7265_n_cfg)},
+ {IWL_PCI_DEVICE(0x095B, 0x5210, iwl7265_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x095A, 0x5C10, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x5012, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x5412, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x5410, iwl7265_2ac_cfg)},
+@@ -399,10 +400,10 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
+ {IWL_PCI_DEVICE(0x095A, 0x900A, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x9110, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x9112, iwl7265_2ac_cfg)},
+- {IWL_PCI_DEVICE(0x095A, 0x9210, iwl7265_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x095B, 0x9210, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095B, 0x9200, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x9510, iwl7265_2ac_cfg)},
+- {IWL_PCI_DEVICE(0x095A, 0x9310, iwl7265_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x095B, 0x9310, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x9410, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x5020, iwl7265_2n_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x502A, iwl7265_2n_cfg)},
+diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
+index 1de80a8e357a..840c47d8e2ce 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
++++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
+@@ -7,6 +7,7 @@
+ *
+ * Copyright(c) 2007 - 2015 Intel Corporation. All rights reserved.
+ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
++ * Copyright(c) 2016 Intel Deutschland GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+@@ -33,6 +34,7 @@
+ *
+ * Copyright(c) 2005 - 2015 Intel Corporation. All rights reserved.
+ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
++ * Copyright(c) 2016 Intel Deutschland GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+@@ -881,9 +883,16 @@ static void iwl_pcie_apply_destination(struct iwl_trans *trans)
+ if (dest->monitor_mode == EXTERNAL_MODE && trans_pcie->fw_mon_size) {
+ iwl_write_prph(trans, le32_to_cpu(dest->base_reg),
+ trans_pcie->fw_mon_phys >> dest->base_shift);
+- iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
+- (trans_pcie->fw_mon_phys +
+- trans_pcie->fw_mon_size) >> dest->end_shift);
++ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
++ iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
++ (trans_pcie->fw_mon_phys +
++ trans_pcie->fw_mon_size - 256) >>
++ dest->end_shift);
++ else
++ iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
++ (trans_pcie->fw_mon_phys +
++ trans_pcie->fw_mon_size) >>
++ dest->end_shift);
+ }
+ }
+
+diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
+index f46c9d7f6528..7f471bff435c 100644
+--- a/drivers/net/wireless/rtlwifi/pci.c
++++ b/drivers/net/wireless/rtlwifi/pci.c
+@@ -801,7 +801,9 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
+ hw_queue);
+ if (rx_remained_cnt == 0)
+ return;
+-
++ buffer_desc = &rtlpci->rx_ring[rxring_idx].buffer_desc[
++ rtlpci->rx_ring[rxring_idx].idx];
++ pdesc = (struct rtl_rx_desc *)skb->data;
+ } else { /* rx descriptor */
+ pdesc = &rtlpci->rx_ring[rxring_idx].desc[
+ rtlpci->rx_ring[rxring_idx].idx];
+@@ -824,13 +826,6 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
+ new_skb = dev_alloc_skb(rtlpci->rxbuffersize);
+ if (unlikely(!new_skb))
+ goto no_new;
+- if (rtlpriv->use_new_trx_flow) {
+- buffer_desc =
+- &rtlpci->rx_ring[rxring_idx].buffer_desc
+- [rtlpci->rx_ring[rxring_idx].idx];
+- /*means rx wifi info*/
+- pdesc = (struct rtl_rx_desc *)skb->data;
+- }
+ memset(&rx_status , 0 , sizeof(rx_status));
+ rtlpriv->cfg->ops->query_rx_desc(hw, &stats,
+ &rx_status, (u8 *)pdesc, skb);
+diff --git a/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c b/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c
+index 11344121c55e..47e32cb0ec1a 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c
+@@ -88,8 +88,6 @@ int rtl88e_init_sw_vars(struct ieee80211_hw *hw)
+ u8 tid;
+
+ rtl8188ee_bt_reg_init(hw);
+- rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
+-
+ rtlpriv->dm.dm_initialgain_enable = 1;
+ rtlpriv->dm.dm_flag = 0;
+ rtlpriv->dm.disable_framebursting = 0;
+@@ -138,6 +136,11 @@ int rtl88e_init_sw_vars(struct ieee80211_hw *hw)
+ rtlpriv->psc.inactiveps = rtlpriv->cfg->mod_params->inactiveps;
+ rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
+ rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
++ rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
++ rtlpriv->cfg->mod_params->sw_crypto =
++ rtlpriv->cfg->mod_params->sw_crypto;
++ rtlpriv->cfg->mod_params->disable_watchdog =
++ rtlpriv->cfg->mod_params->disable_watchdog;
+ if (rtlpriv->cfg->mod_params->disable_watchdog)
+ pr_info("watchdog disabled\n");
+ if (!rtlpriv->psc.inactiveps)
+diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c b/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c
+index de6cb6c3a48c..4780bdc63b2b 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c
+@@ -139,6 +139,8 @@ int rtl92c_init_sw_vars(struct ieee80211_hw *hw)
+ rtlpriv->psc.inactiveps = rtlpriv->cfg->mod_params->inactiveps;
+ rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
+ rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
++ rtlpriv->cfg->mod_params->sw_crypto =
++ rtlpriv->cfg->mod_params->sw_crypto;
+ if (!rtlpriv->psc.inactiveps)
+ pr_info("rtl8192ce: Power Save off (module option)\n");
+ if (!rtlpriv->psc.fwctrl_lps)
+diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
+index fd4a5353d216..7c6f7f0d18c6 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
+@@ -65,6 +65,8 @@ static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw)
+ rtlpriv->dm.disable_framebursting = false;
+ rtlpriv->dm.thermalvalue = 0;
+ rtlpriv->dbg.global_debuglevel = rtlpriv->cfg->mod_params->debug;
++ rtlpriv->cfg->mod_params->sw_crypto =
++ rtlpriv->cfg->mod_params->sw_crypto;
+
+ /* for firmware buf */
+ rtlpriv->rtlhal.pfirmware = vzalloc(0x4000);
+diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/sw.c b/drivers/net/wireless/rtlwifi/rtl8192de/sw.c
+index b19d0398215f..c6e09a19de1a 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8192de/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8192de/sw.c
+@@ -376,8 +376,8 @@ module_param_named(swlps, rtl92de_mod_params.swctrl_lps, bool, 0444);
+ module_param_named(fwlps, rtl92de_mod_params.fwctrl_lps, bool, 0444);
+ MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
+ MODULE_PARM_DESC(ips, "Set to 0 to not use link power save (default 1)\n");
+-MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 0)\n");
+-MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 1)\n");
++MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 1)\n");
++MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 0)\n");
+ MODULE_PARM_DESC(debug, "Set debug level (0-5) (default 0)");
+
+ static SIMPLE_DEV_PM_OPS(rtlwifi_pm_ops, rtl_pci_suspend, rtl_pci_resume);
+diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/sw.c b/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
+index e1fd27c888bf..31baca41ac2f 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
+@@ -187,6 +187,8 @@ static int rtl92s_init_sw_vars(struct ieee80211_hw *hw)
+ rtlpriv->psc.inactiveps = rtlpriv->cfg->mod_params->inactiveps;
+ rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
+ rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
++ rtlpriv->cfg->mod_params->sw_crypto =
++ rtlpriv->cfg->mod_params->sw_crypto;
+ if (!rtlpriv->psc.inactiveps)
+ pr_info("Power Save off (module option)\n");
+ if (!rtlpriv->psc.fwctrl_lps)
+@@ -425,8 +427,8 @@ module_param_named(swlps, rtl92se_mod_params.swctrl_lps, bool, 0444);
+ module_param_named(fwlps, rtl92se_mod_params.fwctrl_lps, bool, 0444);
+ MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
+ MODULE_PARM_DESC(ips, "Set to 0 to not use link power save (default 1)\n");
+-MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 0)\n");
+-MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 1)\n");
++MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 1)\n");
++MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 0)\n");
+ MODULE_PARM_DESC(debug, "Set debug level (0-5) (default 0)");
+
+ static SIMPLE_DEV_PM_OPS(rtlwifi_pm_ops, rtl_pci_suspend, rtl_pci_resume);
+diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c
+index 2721cf89fb16..aac1ed3f7bb4 100644
+--- a/drivers/net/wireless/rtlwifi/usb.c
++++ b/drivers/net/wireless/rtlwifi/usb.c
+@@ -531,6 +531,8 @@ static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
+ ieee80211_rx(hw, skb);
+ else
+ dev_kfree_skb_any(skb);
++ } else {
++ dev_kfree_skb_any(skb);
+ }
+ }
+
+diff --git a/drivers/net/wireless/ti/wlcore/io.h b/drivers/net/wireless/ti/wlcore/io.h
+index 0305729d0986..10cf3747694d 100644
+--- a/drivers/net/wireless/ti/wlcore/io.h
++++ b/drivers/net/wireless/ti/wlcore/io.h
+@@ -207,19 +207,23 @@ static inline int __must_check wlcore_write_reg(struct wl1271 *wl, int reg,
+
+ static inline void wl1271_power_off(struct wl1271 *wl)
+ {
+- int ret;
++ int ret = 0;
+
+ if (!test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags))
+ return;
+
+- ret = wl->if_ops->power(wl->dev, false);
++ if (wl->if_ops->power)
++ ret = wl->if_ops->power(wl->dev, false);
+ if (!ret)
+ clear_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
+ }
+
+ static inline int wl1271_power_on(struct wl1271 *wl)
+ {
+- int ret = wl->if_ops->power(wl->dev, true);
++ int ret = 0;
++
++ if (wl->if_ops->power)
++ ret = wl->if_ops->power(wl->dev, true);
+ if (ret == 0)
+ set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
+
+diff --git a/drivers/net/wireless/ti/wlcore/spi.c b/drivers/net/wireless/ti/wlcore/spi.c
+index f1ac2839d97c..720e4e4b5a3c 100644
+--- a/drivers/net/wireless/ti/wlcore/spi.c
++++ b/drivers/net/wireless/ti/wlcore/spi.c
+@@ -73,7 +73,10 @@
+ */
+ #define SPI_AGGR_BUFFER_SIZE (4 * PAGE_SIZE)
+
+-#define WSPI_MAX_NUM_OF_CHUNKS (SPI_AGGR_BUFFER_SIZE / WSPI_MAX_CHUNK_SIZE)
++/* Maximum number of SPI write chunks */
++#define WSPI_MAX_NUM_OF_CHUNKS \
++ ((SPI_AGGR_BUFFER_SIZE / WSPI_MAX_CHUNK_SIZE) + 1)
++
+
+ struct wl12xx_spi_glue {
+ struct device *dev;
+@@ -268,9 +271,10 @@ static int __must_check wl12xx_spi_raw_write(struct device *child, int addr,
+ void *buf, size_t len, bool fixed)
+ {
+ struct wl12xx_spi_glue *glue = dev_get_drvdata(child->parent);
+- struct spi_transfer t[2 * (WSPI_MAX_NUM_OF_CHUNKS + 1)];
++ /* SPI write buffers - 2 for each chunk */
++ struct spi_transfer t[2 * WSPI_MAX_NUM_OF_CHUNKS];
+ struct spi_message m;
+- u32 commands[WSPI_MAX_NUM_OF_CHUNKS];
++ u32 commands[WSPI_MAX_NUM_OF_CHUNKS]; /* 1 command per chunk */
+ u32 *cmd;
+ u32 chunk_len;
+ int i;
+diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
+index d3346d23963b..89b3befc7155 100644
+--- a/drivers/pci/bus.c
++++ b/drivers/pci/bus.c
+@@ -140,6 +140,8 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
+ type_mask |= IORESOURCE_TYPE_BITS;
+
+ pci_bus_for_each_resource(bus, r, i) {
++ resource_size_t min_used = min;
++
+ if (!r)
+ continue;
+
+@@ -163,12 +165,12 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
+ * overrides "min".
+ */
+ if (avail.start)
+- min = avail.start;
++ min_used = avail.start;
+
+ max = avail.end;
+
+ /* Ok, try it out.. */
+- ret = allocate_resource(r, res, size, min, max,
++ ret = allocate_resource(r, res, size, min_used, max,
+ align, alignf, alignf_data);
+ if (ret == 0)
+ return 0;
+diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci-dra7xx.c
+index 2d57e19a2cd4..b5ae685aec61 100644
+--- a/drivers/pci/host/pci-dra7xx.c
++++ b/drivers/pci/host/pci-dra7xx.c
+@@ -289,7 +289,8 @@ static int __init dra7xx_add_pcie_port(struct dra7xx_pcie *dra7xx,
+ }
+
+ ret = devm_request_irq(&pdev->dev, pp->irq,
+- dra7xx_pcie_msi_irq_handler, IRQF_SHARED,
++ dra7xx_pcie_msi_irq_handler,
++ IRQF_SHARED | IRQF_NO_THREAD,
+ "dra7-pcie-msi", pp);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request irq\n");
+diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
+index c139237e0e52..5b2b83cb67ad 100644
+--- a/drivers/pci/host/pci-exynos.c
++++ b/drivers/pci/host/pci-exynos.c
+@@ -527,7 +527,8 @@ static int __init exynos_add_pcie_port(struct pcie_port *pp,
+
+ ret = devm_request_irq(&pdev->dev, pp->msi_irq,
+ exynos_pcie_msi_irq_handler,
+- IRQF_SHARED, "exynos-pcie", pp);
++ IRQF_SHARED | IRQF_NO_THREAD,
++ "exynos-pcie", pp);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request msi irq\n");
+ return ret;
+diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c
+index fdb95367721e..ebcb0ac8512b 100644
+--- a/drivers/pci/host/pci-imx6.c
++++ b/drivers/pci/host/pci-imx6.c
+@@ -534,7 +534,8 @@ static int __init imx6_add_pcie_port(struct pcie_port *pp,
+
+ ret = devm_request_irq(&pdev->dev, pp->msi_irq,
+ imx6_pcie_msi_handler,
+- IRQF_SHARED, "mx6-pcie-msi", pp);
++ IRQF_SHARED | IRQF_NO_THREAD,
++ "mx6-pcie-msi", pp);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request MSI irq\n");
+ return -ENODEV;
+diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
+index 00e92720d7f7..d9789d6ba47d 100644
+--- a/drivers/pci/host/pci-tegra.c
++++ b/drivers/pci/host/pci-tegra.c
+@@ -1304,7 +1304,7 @@ static int tegra_pcie_enable_msi(struct tegra_pcie *pcie)
+
+ msi->irq = err;
+
+- err = request_irq(msi->irq, tegra_pcie_msi_irq, 0,
++ err = request_irq(msi->irq, tegra_pcie_msi_irq, IRQF_NO_THREAD,
+ tegra_msi_irq_chip.name, pcie);
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
+diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c
+index c086210f2ffd..56ce5640d91a 100644
+--- a/drivers/pci/host/pcie-rcar.c
++++ b/drivers/pci/host/pcie-rcar.c
+@@ -695,14 +695,16 @@ static int rcar_pcie_enable_msi(struct rcar_pcie *pcie)
+
+ /* Two irqs are for MSI, but they are also used for non-MSI irqs */
+ err = devm_request_irq(&pdev->dev, msi->irq1, rcar_pcie_msi_irq,
+- IRQF_SHARED, rcar_msi_irq_chip.name, pcie);
++ IRQF_SHARED | IRQF_NO_THREAD,
++ rcar_msi_irq_chip.name, pcie);
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
+ goto err;
+ }
+
+ err = devm_request_irq(&pdev->dev, msi->irq2, rcar_pcie_msi_irq,
+- IRQF_SHARED, rcar_msi_irq_chip.name, pcie);
++ IRQF_SHARED | IRQF_NO_THREAD,
++ rcar_msi_irq_chip.name, pcie);
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
+ goto err;
+diff --git a/drivers/pci/host/pcie-spear13xx.c b/drivers/pci/host/pcie-spear13xx.c
+index 020d78890719..4ea793eaa2bd 100644
+--- a/drivers/pci/host/pcie-spear13xx.c
++++ b/drivers/pci/host/pcie-spear13xx.c
+@@ -281,7 +281,8 @@ static int spear13xx_add_pcie_port(struct pcie_port *pp,
+ return -ENODEV;
+ }
+ ret = devm_request_irq(dev, pp->irq, spear13xx_pcie_irq_handler,
+- IRQF_SHARED, "spear1340-pcie", pp);
++ IRQF_SHARED | IRQF_NO_THREAD,
++ "spear1340-pcie", pp);
+ if (ret) {
+ dev_err(dev, "failed to request irq %d\n", pp->irq);
+ return ret;
+diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c
+index f1a06a091ccb..577fe5b2f617 100644
+--- a/drivers/pci/host/pcie-xilinx.c
++++ b/drivers/pci/host/pcie-xilinx.c
+@@ -776,7 +776,8 @@ static int xilinx_pcie_parse_dt(struct xilinx_pcie_port *port)
+
+ port->irq = irq_of_parse_and_map(node, 0);
+ err = devm_request_irq(dev, port->irq, xilinx_pcie_intr_handler,
+- IRQF_SHARED, "xilinx-pcie", port);
++ IRQF_SHARED | IRQF_NO_THREAD,
++ "xilinx-pcie", port);
+ if (err) {
+ dev_err(dev, "unable to request irq %d\n", port->irq);
+ return err;
+diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
+index bcb90e4888dd..b60309ee80ed 100644
+--- a/drivers/pci/hotplug/acpiphp_glue.c
++++ b/drivers/pci/hotplug/acpiphp_glue.c
+@@ -954,8 +954,10 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot)
+ {
+ pci_lock_rescan_remove();
+
+- if (slot->flags & SLOT_IS_GOING_AWAY)
++ if (slot->flags & SLOT_IS_GOING_AWAY) {
++ pci_unlock_rescan_remove();
+ return -ENODEV;
++ }
+
+ /* configure all functions */
+ if (!(slot->flags & SLOT_ENABLED))
+diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
+index cd78f1166b33..9a92d13e3917 100644
+--- a/drivers/platform/x86/ideapad-laptop.c
++++ b/drivers/platform/x86/ideapad-laptop.c
+@@ -845,6 +845,13 @@ static const struct dmi_system_id no_hw_rfkill_list[] = {
+ },
+ },
+ {
++ .ident = "Lenovo ideapad Y700-17ISK",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-17ISK"),
++ },
++ },
++ {
+ .ident = "Lenovo Yoga 2 11 / 13 / Pro",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+@@ -865,6 +872,20 @@ static const struct dmi_system_id no_hw_rfkill_list[] = {
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3 Pro-1370"),
+ },
+ },
++ {
++ .ident = "Lenovo Yoga 700",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 700"),
++ },
++ },
++ {
++ .ident = "Lenovo Yoga 900",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"),
++ },
++ },
+ {}
+ };
+
+diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
+index 9f77d23239a2..64ed88a67e6e 100644
+--- a/drivers/scsi/scsi_devinfo.c
++++ b/drivers/scsi/scsi_devinfo.c
+@@ -227,6 +227,7 @@ static struct {
+ {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
+ {"Promise", "", NULL, BLIST_SPARSELUN},
+ {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
++ {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
+ {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
+ {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
+ {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
+diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
+index 11ea52b2c36b..c66fd23b3c13 100644
+--- a/drivers/scsi/sd.c
++++ b/drivers/scsi/sd.c
+@@ -3141,8 +3141,8 @@ static int sd_suspend_common(struct device *dev, bool ignore_stop_errors)
+ struct scsi_disk *sdkp = dev_get_drvdata(dev);
+ int ret = 0;
+
+- if (!sdkp)
+- return 0; /* this can happen */
++ if (!sdkp) /* E.g.: runtime suspend following sd_remove() */
++ return 0;
+
+ if (sdkp->WCE && sdkp->media_present) {
+ sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n");
+@@ -3181,6 +3181,9 @@ static int sd_resume(struct device *dev)
+ {
+ struct scsi_disk *sdkp = dev_get_drvdata(dev);
+
++ if (!sdkp) /* E.g.: runtime resume at the start of sd_probe() */
++ return 0;
++
+ if (!sdkp->device->manage_start_stop)
+ return 0;
+
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index 9d7b7db75e4b..3bbf4853733c 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -1255,7 +1255,7 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
+ }
+
+ sfp->mmap_called = 1;
+- vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
++ vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+ vma->vm_private_data = sfp;
+ vma->vm_ops = &sg_mmap_vm_ops;
+ return 0;
+diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
+index 8bd54a64efd6..64c867405ad4 100644
+--- a/drivers/scsi/sr.c
++++ b/drivers/scsi/sr.c
+@@ -144,6 +144,9 @@ static int sr_runtime_suspend(struct device *dev)
+ {
+ struct scsi_cd *cd = dev_get_drvdata(dev);
+
++ if (!cd) /* E.g.: runtime suspend following sr_remove() */
++ return 0;
++
+ if (cd->media_present)
+ return -EBUSY;
+ else
+@@ -985,6 +988,7 @@ static int sr_remove(struct device *dev)
+ scsi_autopm_get_device(cd->device);
+
+ del_gendisk(cd->disk);
++ dev_set_drvdata(dev, NULL);
+
+ mutex_lock(&sr_ref_mutex);
+ kref_put(&cd->kref, sr_kref_release);
+diff --git a/drivers/staging/speakup/selection.c b/drivers/staging/speakup/selection.c
+index a0315701c7d9..ed68b2cfe031 100644
+--- a/drivers/staging/speakup/selection.c
++++ b/drivers/staging/speakup/selection.c
+@@ -141,7 +141,9 @@ static void __speakup_paste_selection(struct work_struct *work)
+ struct tty_ldisc *ld;
+ DECLARE_WAITQUEUE(wait, current);
+
+- ld = tty_ldisc_ref_wait(tty);
++ ld = tty_ldisc_ref(tty);
++ if (!ld)
++ goto tty_unref;
+ tty_buffer_lock_exclusive(&vc->port);
+
+ add_wait_queue(&vc->paste_wait, &wait);
+@@ -161,6 +163,7 @@ static void __speakup_paste_selection(struct work_struct *work)
+
+ tty_buffer_unlock_exclusive(&vc->port);
+ tty_ldisc_deref(ld);
++tty_unref:
+ tty_kref_put(tty);
+ }
+
+diff --git a/drivers/staging/speakup/serialio.c b/drivers/staging/speakup/serialio.c
+index 1d9d51bdf517..f41a7da1949d 100644
+--- a/drivers/staging/speakup/serialio.c
++++ b/drivers/staging/speakup/serialio.c
+@@ -6,6 +6,11 @@
+ #include "spk_priv.h"
+ #include "serialio.h"
+
++#include <linux/serial_core.h>
++/* WARNING: Do not change this to <linux/serial.h> without testing that
++ * SERIAL_PORT_DFNS does get defined to the appropriate value. */
++#include <asm/serial.h>
++
+ #ifndef SERIAL_PORT_DFNS
+ #define SERIAL_PORT_DFNS
+ #endif
+@@ -23,9 +28,15 @@ const struct old_serial_port *spk_serial_init(int index)
+ int baud = 9600, quot = 0;
+ unsigned int cval = 0;
+ int cflag = CREAD | HUPCL | CLOCAL | B9600 | CS8;
+- const struct old_serial_port *ser = rs_table + index;
++ const struct old_serial_port *ser;
+ int err;
+
++ if (index >= ARRAY_SIZE(rs_table)) {
++ pr_info("no port info for ttyS%d\n", index);
++ return NULL;
++ }
++ ser = rs_table + index;
++
+ /* Divisor, bytesize and parity */
+ quot = ser->baud_base / baud;
+ cval = cflag & (CSIZE | CSTOPB);
+diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
+index 6f2fb546477e..5a8add721741 100644
+--- a/drivers/target/iscsi/iscsi_target_configfs.c
++++ b/drivers/target/iscsi/iscsi_target_configfs.c
+@@ -1907,7 +1907,8 @@ static void lio_tpg_release_fabric_acl(
+ }
+
+ /*
+- * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
++ * Called with spin_lock_irq(struct se_portal_group->session_lock) held
++ * or not held.
+ *
+ * Also, this function calls iscsit_inc_session_usage_count() on the
+ * struct iscsi_session in question.
+@@ -1915,19 +1916,32 @@ static void lio_tpg_release_fabric_acl(
+ static int lio_tpg_shutdown_session(struct se_session *se_sess)
+ {
+ struct iscsi_session *sess = se_sess->fabric_sess_ptr;
++ struct se_portal_group *se_tpg = se_sess->se_tpg;
++ bool local_lock = false;
++
++ if (!spin_is_locked(&se_tpg->session_lock)) {
++ spin_lock_irq(&se_tpg->session_lock);
++ local_lock = true;
++ }
+
+ spin_lock(&sess->conn_lock);
+ if (atomic_read(&sess->session_fall_back_to_erl0) ||
+ atomic_read(&sess->session_logout) ||
+ (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
+ spin_unlock(&sess->conn_lock);
++ if (local_lock)
++ spin_unlock_irq(&sess->conn_lock);
+ return 0;
+ }
+ atomic_set(&sess->session_reinstatement, 1);
+ spin_unlock(&sess->conn_lock);
+
+ iscsit_stop_time2retain_timer(sess);
++ spin_unlock_irq(&se_tpg->session_lock);
++
+ iscsit_stop_session(sess, 1, 1);
++ if (!local_lock)
++ spin_lock_irq(&se_tpg->session_lock);
+
+ return 1;
+ }
+diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
+index 5a0f12d08e8b..ec4ea5940bf7 100644
+--- a/drivers/thermal/step_wise.c
++++ b/drivers/thermal/step_wise.c
+@@ -63,6 +63,19 @@ static unsigned long get_target_state(struct thermal_instance *instance,
+ next_target = instance->target;
+ dev_dbg(&cdev->device, "cur_state=%ld\n", cur_state);
+
++ if (!instance->initialized) {
++ if (throttle) {
++ next_target = (cur_state + 1) >= instance->upper ?
++ instance->upper :
++ ((cur_state + 1) < instance->lower ?
++ instance->lower : (cur_state + 1));
++ } else {
++ next_target = THERMAL_NO_TARGET;
++ }
++
++ return next_target;
++ }
++
+ switch (trend) {
+ case THERMAL_TREND_RAISING:
+ if (throttle) {
+@@ -149,7 +162,7 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
+ dev_dbg(&instance->cdev->device, "old_target=%d, target=%d\n",
+ old_target, (int)instance->target);
+
+- if (old_target == instance->target)
++ if (instance->initialized && old_target == instance->target)
+ continue;
+
+ /* Activate a passive thermal instance */
+@@ -161,7 +174,7 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
+ instance->target == THERMAL_NO_TARGET)
+ update_passive_instance(tz, trip_type, -1);
+
+-
++ instance->initialized = true;
+ instance->cdev->updated = false; /* cdev needs update */
+ }
+
+diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
+index 4108db7e10c1..a3282bfb343d 100644
+--- a/drivers/thermal/thermal_core.c
++++ b/drivers/thermal/thermal_core.c
+@@ -37,6 +37,7 @@
+ #include <linux/of.h>
+ #include <net/netlink.h>
+ #include <net/genetlink.h>
++#include <linux/suspend.h>
+
+ #define CREATE_TRACE_POINTS
+ #include <trace/events/thermal.h>
+@@ -59,6 +60,8 @@ static LIST_HEAD(thermal_governor_list);
+ static DEFINE_MUTEX(thermal_list_lock);
+ static DEFINE_MUTEX(thermal_governor_lock);
+
++static atomic_t in_suspend;
++
+ static struct thermal_governor *def_governor;
+
+ static struct thermal_governor *__find_governor(const char *name)
+@@ -471,14 +474,31 @@ static void update_temperature(struct thermal_zone_device *tz)
+ mutex_unlock(&tz->lock);
+
+ trace_thermal_temperature(tz);
+- dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n",
+- tz->last_temperature, tz->temperature);
++ if (tz->last_temperature == THERMAL_TEMP_INVALID)
++ dev_dbg(&tz->device, "last_temperature N/A, current_temperature=%d\n",
++ tz->temperature);
++ else
++ dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n",
++ tz->last_temperature, tz->temperature);
++}
++
++static void thermal_zone_device_reset(struct thermal_zone_device *tz)
++{
++ struct thermal_instance *pos;
++
++ tz->temperature = THERMAL_TEMP_INVALID;
++ tz->passive = 0;
++ list_for_each_entry(pos, &tz->thermal_instances, tz_node)
++ pos->initialized = false;
+ }
+
+ void thermal_zone_device_update(struct thermal_zone_device *tz)
+ {
+ int count;
+
++ if (atomic_read(&in_suspend))
++ return;
++
+ if (!tz->ops->get_temp)
+ return;
+
+@@ -1016,6 +1036,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
+ if (!result) {
+ list_add_tail(&dev->tz_node, &tz->thermal_instances);
+ list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
++ atomic_set(&tz->need_update, 1);
+ }
+ mutex_unlock(&cdev->lock);
+ mutex_unlock(&tz->lock);
+@@ -1122,6 +1143,7 @@ __thermal_cooling_device_register(struct device_node *np,
+ const struct thermal_cooling_device_ops *ops)
+ {
+ struct thermal_cooling_device *cdev;
++ struct thermal_zone_device *pos = NULL;
+ int result;
+
+ if (type && strlen(type) >= THERMAL_NAME_LENGTH)
+@@ -1166,6 +1188,12 @@ __thermal_cooling_device_register(struct device_node *np,
+ /* Update binding information for 'this' new cdev */
+ bind_cdev(cdev);
+
++ mutex_lock(&thermal_list_lock);
++ list_for_each_entry(pos, &thermal_tz_list, node)
++ if (atomic_cmpxchg(&pos->need_update, 1, 0))
++ thermal_zone_device_update(pos);
++ mutex_unlock(&thermal_list_lock);
++
+ return cdev;
+ }
+
+@@ -1496,6 +1524,8 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
+ tz->trips = trips;
+ tz->passive_delay = passive_delay;
+ tz->polling_delay = polling_delay;
++ /* A new thermal zone needs to be updated anyway. */
++ atomic_set(&tz->need_update, 1);
+
+ dev_set_name(&tz->device, "thermal_zone%d", tz->id);
+ result = device_register(&tz->device);
+@@ -1576,7 +1606,10 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
+ if (!tz->ops->get_temp)
+ thermal_zone_device_set_polling(tz, 0);
+
+- thermal_zone_device_update(tz);
++ thermal_zone_device_reset(tz);
++ /* Update the new thermal zone and mark it as already updated. */
++ if (atomic_cmpxchg(&tz->need_update, 1, 0))
++ thermal_zone_device_update(tz);
+
+ return tz;
+
+@@ -1810,6 +1843,36 @@ static void thermal_unregister_governors(void)
+ thermal_gov_user_space_unregister();
+ }
+
++static int thermal_pm_notify(struct notifier_block *nb,
++ unsigned long mode, void *_unused)
++{
++ struct thermal_zone_device *tz;
++
++ switch (mode) {
++ case PM_HIBERNATION_PREPARE:
++ case PM_RESTORE_PREPARE:
++ case PM_SUSPEND_PREPARE:
++ atomic_set(&in_suspend, 1);
++ break;
++ case PM_POST_HIBERNATION:
++ case PM_POST_RESTORE:
++ case PM_POST_SUSPEND:
++ atomic_set(&in_suspend, 0);
++ list_for_each_entry(tz, &thermal_tz_list, node) {
++ thermal_zone_device_reset(tz);
++ thermal_zone_device_update(tz);
++ }
++ break;
++ default:
++ break;
++ }
++ return 0;
++}
++
++static struct notifier_block thermal_pm_nb = {
++ .notifier_call = thermal_pm_notify,
++};
++
+ static int __init thermal_init(void)
+ {
+ int result;
+@@ -1830,6 +1893,11 @@ static int __init thermal_init(void)
+ if (result)
+ goto exit_netlink;
+
++ result = register_pm_notifier(&thermal_pm_nb);
++ if (result)
++ pr_warn("Thermal: Can not register suspend notifier, return %d\n",
++ result);
++
+ return 0;
+
+ exit_netlink:
+@@ -1849,6 +1917,7 @@ error:
+
+ static void __exit thermal_exit(void)
+ {
++ unregister_pm_notifier(&thermal_pm_nb);
+ of_thermal_destroy_zones();
+ genetlink_exit();
+ class_unregister(&thermal_class);
+diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
+index 8e391812e503..dce86ee8e9d7 100644
+--- a/drivers/thermal/thermal_core.h
++++ b/drivers/thermal/thermal_core.h
+@@ -41,6 +41,7 @@ struct thermal_instance {
+ struct thermal_zone_device *tz;
+ struct thermal_cooling_device *cdev;
+ int trip;
++ bool initialized;
+ unsigned long upper; /* Highest cooling state for this trip point */
+ unsigned long lower; /* Lowest cooling state for this trip point */
+ unsigned long target; /* expected cooling state */
+diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
+index e5edf45e9d4c..33088c70ef3b 100644
+--- a/drivers/tty/n_tty.c
++++ b/drivers/tty/n_tty.c
+@@ -258,16 +258,13 @@ static void n_tty_check_throttle(struct tty_struct *tty)
+
+ static void n_tty_check_unthrottle(struct tty_struct *tty)
+ {
+- if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
+- tty->link->ldisc->ops->write_wakeup == n_tty_write_wakeup) {
++ if (tty->driver->type == TTY_DRIVER_TYPE_PTY) {
+ if (chars_in_buffer(tty) > TTY_THRESHOLD_UNTHROTTLE)
+ return;
+ if (!tty->count)
+ return;
+ n_tty_kick_worker(tty);
+- n_tty_write_wakeup(tty->link);
+- if (waitqueue_active(&tty->link->write_wait))
+- wake_up_interruptible_poll(&tty->link->write_wait, POLLOUT);
++ tty_wakeup(tty->link);
+ return;
+ }
+
+diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
+index eb8adc2e68c1..2fd163b75665 100644
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -1380,6 +1380,9 @@ ce4100_serial_setup(struct serial_private *priv,
+ #define PCI_DEVICE_ID_INTEL_BSW_UART1 0x228a
+ #define PCI_DEVICE_ID_INTEL_BSW_UART2 0x228c
+
++#define PCI_DEVICE_ID_INTEL_BDW_UART1 0x9ce3
++#define PCI_DEVICE_ID_INTEL_BDW_UART2 0x9ce4
++
+ #define BYT_PRV_CLK 0x800
+ #define BYT_PRV_CLK_EN (1 << 0)
+ #define BYT_PRV_CLK_M_VAL_SHIFT 1
+@@ -1458,11 +1461,13 @@ byt_serial_setup(struct serial_private *priv,
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_INTEL_BYT_UART1:
+ case PCI_DEVICE_ID_INTEL_BSW_UART1:
++ case PCI_DEVICE_ID_INTEL_BDW_UART1:
+ rx_param->src_id = 3;
+ tx_param->dst_id = 2;
+ break;
+ case PCI_DEVICE_ID_INTEL_BYT_UART2:
+ case PCI_DEVICE_ID_INTEL_BSW_UART2:
++ case PCI_DEVICE_ID_INTEL_BDW_UART2:
+ rx_param->src_id = 5;
+ tx_param->dst_id = 4;
+ break;
+@@ -2154,6 +2159,20 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
+ .subdevice = PCI_ANY_ID,
+ .setup = byt_serial_setup,
+ },
++ {
++ .vendor = PCI_VENDOR_ID_INTEL,
++ .device = PCI_DEVICE_ID_INTEL_BDW_UART1,
++ .subvendor = PCI_ANY_ID,
++ .subdevice = PCI_ANY_ID,
++ .setup = byt_serial_setup,
++ },
++ {
++ .vendor = PCI_VENDOR_ID_INTEL,
++ .device = PCI_DEVICE_ID_INTEL_BDW_UART2,
++ .subvendor = PCI_ANY_ID,
++ .subdevice = PCI_ANY_ID,
++ .setup = byt_serial_setup,
++ },
+ /*
+ * ITE
+ */
+@@ -5603,6 +5622,16 @@ static struct pci_device_id serial_pci_tbl[] = {
+ PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+ pbn_byt },
+
++ /* Intel Broadwell */
++ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BDW_UART1,
++ PCI_ANY_ID, PCI_ANY_ID,
++ PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
++ pbn_byt },
++ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BDW_UART2,
++ PCI_ANY_ID, PCI_ANY_ID,
++ PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
++ pbn_byt },
++
+ /*
+ * Intel Penwell
+ */
+diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
+index 5a5c1ab5a375..be96970646a9 100644
+--- a/drivers/tty/tty_io.c
++++ b/drivers/tty/tty_io.c
+@@ -2670,6 +2670,28 @@ static int tiocsetd(struct tty_struct *tty, int __user *p)
+ }
+
+ /**
++ * tiocgetd - get line discipline
++ * @tty: tty device
++ * @p: pointer to user data
++ *
++ * Retrieves the line discipline id directly from the ldisc.
++ *
++ * Locking: waits for ldisc reference (in case the line discipline
++ * is changing or the tty is being hungup)
++ */
++
++static int tiocgetd(struct tty_struct *tty, int __user *p)
++{
++ struct tty_ldisc *ld;
++ int ret;
++
++ ld = tty_ldisc_ref_wait(tty);
++ ret = put_user(ld->ops->num, p);
++ tty_ldisc_deref(ld);
++ return ret;
++}
++
++/**
+ * send_break - performed time break
+ * @tty: device to break on
+ * @duration: timeout in mS
+@@ -2895,7 +2917,7 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ case TIOCGSID:
+ return tiocgsid(tty, real_tty, p);
+ case TIOCGETD:
+- return put_user(tty->ldisc->ops->num, (int __user *)p);
++ return tiocgetd(tty, p);
+ case TIOCSETD:
+ return tiocsetd(tty, p);
+ case TIOCVHANGUP:
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index 0fe15aec7ed0..df3deb000a80 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -432,7 +432,8 @@ static void acm_read_bulk_callback(struct urb *urb)
+ set_bit(rb->index, &acm->read_urbs_free);
+ dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
+ __func__, status);
+- return;
++ if ((status != -ENOENT) || (urb->actual_length == 0))
++ return;
+ }
+
+ usb_mark_last_busy(acm->dev);
+@@ -1414,6 +1415,8 @@ made_compressed_probe:
+ usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
+ NULL, acm->writesize, acm_write_bulk, snd);
+ snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
++ if (quirks & SEND_ZERO_PACKET)
++ snd->urb->transfer_flags |= URB_ZERO_PACKET;
+ snd->instance = acm;
+ }
+
+@@ -1848,6 +1851,11 @@ static const struct usb_device_id acm_ids[] = {
+ },
+ #endif
+
++ /*Samsung phone in firmware update mode */
++ { USB_DEVICE(0x04e8, 0x685d),
++ .driver_info = IGNORE_DEVICE,
++ },
++
+ /* Exclude Infineon Flash Loader utility */
+ { USB_DEVICE(0x058b, 0x0041),
+ .driver_info = IGNORE_DEVICE,
+@@ -1871,6 +1879,10 @@ static const struct usb_device_id acm_ids[] = {
+ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+ USB_CDC_ACM_PROTO_AT_CDMA) },
+
++ { USB_DEVICE(0x1519, 0x0452), /* Intel 7260 modem */
++ .driver_info = SEND_ZERO_PACKET,
++ },
++
+ { }
+ };
+
+diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
+index b3b6c9db6fe5..ac830e0ae38b 100644
+--- a/drivers/usb/class/cdc-acm.h
++++ b/drivers/usb/class/cdc-acm.h
+@@ -134,3 +134,4 @@ struct acm {
+ #define IGNORE_DEVICE BIT(5)
+ #define QUIRK_CONTROL_LINE_STATE BIT(6)
+ #define CLEAR_HALT_CONDITIONS BIT(7)
++#define SEND_ZERO_PACKET BIT(8)
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index ee11b301f3da..e56ad83b35a4 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -5346,7 +5346,6 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
+ }
+
+ bos = udev->bos;
+- udev->bos = NULL;
+
+ for (i = 0; i < SET_CONFIG_TRIES; ++i) {
+
+@@ -5439,8 +5438,11 @@ done:
+ usb_set_usb2_hardware_lpm(udev, 1);
+ usb_unlocked_enable_lpm(udev);
+ usb_enable_ltm(udev);
+- usb_release_bos_descriptor(udev);
+- udev->bos = bos;
++ /* release the new BOS descriptor allocated by hub_port_init() */
++ if (udev->bos != bos) {
++ usb_release_bos_descriptor(udev);
++ udev->bos = bos;
++ }
+ return 0;
+
+ re_enumerate:
+diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
+index 65b0b6a58599..da03d8b258dd 100644
+--- a/drivers/usb/host/Makefile
++++ b/drivers/usb/host/Makefile
+@@ -26,9 +26,6 @@ obj-$(CONFIG_USB_WHCI_HCD) += whci/
+
+ obj-$(CONFIG_PCI) += pci-quirks.o
+
+-obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o
+-obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
+-
+ obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
+ obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o
+ obj-$(CONFIG_USB_EHCI_HCD_PLATFORM) += ehci-platform.o
+@@ -63,6 +60,8 @@ obj-$(CONFIG_USB_OHCI_HCD_PXA27X) += ohci-pxa27x.o
+ obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
+ obj-$(CONFIG_USB_FHCI_HCD) += fhci.o
+ obj-$(CONFIG_USB_XHCI_HCD) += xhci-hcd.o
++obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o
++obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
+ obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
+ obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
+ obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index 7e5c90eebb9c..3ff5fcc7c94b 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -23,10 +23,17 @@
+ #include <linux/pci.h>
+ #include <linux/slab.h>
+ #include <linux/module.h>
++#include <linux/acpi.h>
+
+ #include "xhci.h"
+ #include "xhci-trace.h"
+
++#define SSIC_PORT_NUM 2
++#define SSIC_PORT_CFG2 0x880c
++#define SSIC_PORT_CFG2_OFFSET 0x30
++#define PROG_DONE (1 << 30)
++#define SSIC_PORT_UNUSED (1 << 31)
++
+ /* Device for a quirk */
+ #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73
+ #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000
+@@ -40,6 +47,7 @@
+ #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI 0x22b5
+ #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI 0xa12f
+ #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI 0x9d2f
++#define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8
+
+ static const char hcd_name[] = "xhci_hcd";
+
+@@ -140,9 +148,14 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+ (pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
+- pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI)) {
++ pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
++ pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI)) {
+ xhci->quirks |= XHCI_PME_STUCK_QUIRK;
+ }
++ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
++ pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
++ xhci->quirks |= XHCI_SSIC_PORT_UNUSED;
++ }
+ if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
+ pdev->device == PCI_DEVICE_ID_EJ168) {
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
+@@ -169,20 +182,18 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ "QUIRK: Resetting on resume");
+ }
+
+-/*
+- * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
+- * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
+- */
+-static void xhci_pme_quirk(struct xhci_hcd *xhci)
++#ifdef CONFIG_ACPI
++static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
+ {
+- u32 val;
+- void __iomem *reg;
+-
+- reg = (void __iomem *) xhci->cap_regs + 0x80a4;
+- val = readl(reg);
+- writel(val | BIT(28), reg);
+- readl(reg);
++ static const u8 intel_dsm_uuid[] = {
++ 0xb7, 0x0c, 0x34, 0xac, 0x01, 0xe9, 0xbf, 0x45,
++ 0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23,
++ };
++ acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), intel_dsm_uuid, 3, 1, NULL);
+ }
++#else
++ static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
++#endif /* CONFIG_ACPI */
+
+ /* called during probe() after chip reset completes */
+ static int xhci_pci_setup(struct usb_hcd *hcd)
+@@ -263,6 +274,9 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
+ HCC_MAX_PSA(xhci->hcc_params) >= 4)
+ xhci->shared_hcd->can_do_streams = 1;
+
++ if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
++ xhci_pme_acpi_rtd3_enable(dev);
++
+ /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
+ pm_runtime_put_noidle(&dev->dev);
+
+@@ -296,10 +310,65 @@ static void xhci_pci_remove(struct pci_dev *dev)
+ }
+
+ #ifdef CONFIG_PM
++/*
++ * In some Intel xHCI controllers, in order to get D3 working,
++ * through a vendor specific SSIC CONFIG register at offset 0x883c,
++ * SSIC PORT need to be marked as "unused" before putting xHCI
++ * into D3. After D3 exit, the SSIC port need to be marked as "used".
++ * Without this change, xHCI might not enter D3 state.
++ */
++static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend)
++{
++ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
++ u32 val;
++ void __iomem *reg;
++ int i;
++
++ for (i = 0; i < SSIC_PORT_NUM; i++) {
++ reg = (void __iomem *) xhci->cap_regs +
++ SSIC_PORT_CFG2 +
++ i * SSIC_PORT_CFG2_OFFSET;
++
++ /* Notify SSIC that SSIC profile programming is not done. */
++ val = readl(reg) & ~PROG_DONE;
++ writel(val, reg);
++
++ /* Mark SSIC port as unused(suspend) or used(resume) */
++ val = readl(reg);
++ if (suspend)
++ val |= SSIC_PORT_UNUSED;
++ else
++ val &= ~SSIC_PORT_UNUSED;
++ writel(val, reg);
++
++ /* Notify SSIC that SSIC profile programming is done */
++ val = readl(reg) | PROG_DONE;
++ writel(val, reg);
++ readl(reg);
++ }
++}
++
++/*
++ * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
++ * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
++ */
++static void xhci_pme_quirk(struct usb_hcd *hcd)
++{
++ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
++ void __iomem *reg;
++ u32 val;
++
++ reg = (void __iomem *) xhci->cap_regs + 0x80a4;
++ val = readl(reg);
++ writel(val | BIT(28), reg);
++ readl(reg);
++}
++
+ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
+ {
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
++ int ret;
+
+ /*
+ * Systems with the TI redriver that loses port status change events
+@@ -309,9 +378,16 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
+ pdev->no_d3cold = true;
+
+ if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
+- xhci_pme_quirk(xhci);
++ xhci_pme_quirk(hcd);
++
++ if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
++ xhci_ssic_port_unused_quirk(hcd, true);
+
+- return xhci_suspend(xhci, do_wakeup);
++ ret = xhci_suspend(xhci, do_wakeup);
++ if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED))
++ xhci_ssic_port_unused_quirk(hcd, false);
++
++ return ret;
+ }
+
+ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
+@@ -341,8 +417,11 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL)
+ usb_enable_intel_xhci_ports(pdev);
+
++ if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
++ xhci_ssic_port_unused_quirk(hcd, false);
++
+ if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
+- xhci_pme_quirk(xhci);
++ xhci_pme_quirk(hcd);
+
+ retval = xhci_resume(xhci, hibernated);
+ return retval;
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index 41d7a05f8af4..e6d858a49d04 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -3001,21 +3001,6 @@ int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ }
+
+ /*
+- * The TD size is the number of bytes remaining in the TD (including this TRB),
+- * right shifted by 10.
+- * It must fit in bits 21:17, so it can't be bigger than 31.
+- */
+-static u32 xhci_td_remainder(unsigned int remainder)
+-{
+- u32 max = (1 << (21 - 17 + 1)) - 1;
+-
+- if ((remainder >> 10) >= max)
+- return max << 17;
+- else
+- return (remainder >> 10) << 17;
+-}
+-
+-/*
+ * For xHCI 1.0 host controllers, TD size is the number of max packet sized
+ * packets remaining in the TD (*not* including this TRB).
+ *
+@@ -3027,30 +3012,36 @@ static u32 xhci_td_remainder(unsigned int remainder)
+ *
+ * TD size = total_packet_count - packets_transferred
+ *
+- * It must fit in bits 21:17, so it can't be bigger than 31.
++ * For xHCI 0.96 and older, TD size field should be the remaining bytes
++ * including this TRB, right shifted by 10
++ *
++ * For all hosts it must fit in bits 21:17, so it can't be bigger than 31.
++ * This is taken care of in the TRB_TD_SIZE() macro
++ *
+ * The last TRB in a TD must have the TD size set to zero.
+ */
+-static u32 xhci_v1_0_td_remainder(int running_total, int trb_buff_len,
+- unsigned int total_packet_count, struct urb *urb,
+- unsigned int num_trbs_left)
++static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred,
++ int trb_buff_len, unsigned int td_total_len,
++ struct urb *urb, unsigned int num_trbs_left)
+ {
+- int packets_transferred;
++ u32 maxp, total_packet_count;
++
++ if (xhci->hci_version < 0x100)
++ return ((td_total_len - transferred) >> 10);
++
++ maxp = GET_MAX_PACKET(usb_endpoint_maxp(&urb->ep->desc));
++ total_packet_count = DIV_ROUND_UP(td_total_len, maxp);
+
+ /* One TRB with a zero-length data packet. */
+- if (num_trbs_left == 0 || (running_total == 0 && trb_buff_len == 0))
++ if (num_trbs_left == 0 || (transferred == 0 && trb_buff_len == 0) ||
++ trb_buff_len == td_total_len)
+ return 0;
+
+- /* All the TRB queueing functions don't count the current TRB in
+- * running_total.
+- */
+- packets_transferred = (running_total + trb_buff_len) /
+- GET_MAX_PACKET(usb_endpoint_maxp(&urb->ep->desc));
+-
+- if ((total_packet_count - packets_transferred) > 31)
+- return 31 << 17;
+- return (total_packet_count - packets_transferred) << 17;
++ /* Queueing functions don't count the current TRB into transferred */
++ return (total_packet_count - ((transferred + trb_buff_len) / maxp));
+ }
+
++
+ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ struct urb *urb, int slot_id, unsigned int ep_index)
+ {
+@@ -3172,17 +3163,12 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ }
+
+ /* Set the TRB length, TD size, and interrupter fields. */
+- if (xhci->hci_version < 0x100) {
+- remainder = xhci_td_remainder(
+- urb->transfer_buffer_length -
+- running_total);
+- } else {
+- remainder = xhci_v1_0_td_remainder(running_total,
+- trb_buff_len, total_packet_count, urb,
+- num_trbs - 1);
+- }
++ remainder = xhci_td_remainder(xhci, running_total, trb_buff_len,
++ urb->transfer_buffer_length,
++ urb, num_trbs - 1);
++
+ length_field = TRB_LEN(trb_buff_len) |
+- remainder |
++ TRB_TD_SIZE(remainder) |
+ TRB_INTR_TARGET(0);
+
+ if (num_trbs > 1)
+@@ -3345,17 +3331,12 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ field |= TRB_ISP;
+
+ /* Set the TRB length, TD size, and interrupter fields. */
+- if (xhci->hci_version < 0x100) {
+- remainder = xhci_td_remainder(
+- urb->transfer_buffer_length -
+- running_total);
+- } else {
+- remainder = xhci_v1_0_td_remainder(running_total,
+- trb_buff_len, total_packet_count, urb,
+- num_trbs - 1);
+- }
++ remainder = xhci_td_remainder(xhci, running_total, trb_buff_len,
++ urb->transfer_buffer_length,
++ urb, num_trbs - 1);
++
+ length_field = TRB_LEN(trb_buff_len) |
+- remainder |
++ TRB_TD_SIZE(remainder) |
+ TRB_INTR_TARGET(0);
+
+ if (num_trbs > 1)
+@@ -3393,7 +3374,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ struct usb_ctrlrequest *setup;
+ struct xhci_generic_trb *start_trb;
+ int start_cycle;
+- u32 field, length_field;
++ u32 field, length_field, remainder;
+ struct urb_priv *urb_priv;
+ struct xhci_td *td;
+
+@@ -3466,9 +3447,15 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ else
+ field = TRB_TYPE(TRB_DATA);
+
++ remainder = xhci_td_remainder(xhci, 0,
++ urb->transfer_buffer_length,
++ urb->transfer_buffer_length,
++ urb, 1);
++
+ length_field = TRB_LEN(urb->transfer_buffer_length) |
+- xhci_td_remainder(urb->transfer_buffer_length) |
++ TRB_TD_SIZE(remainder) |
+ TRB_INTR_TARGET(0);
++
+ if (urb->transfer_buffer_length > 0) {
+ if (setup->bRequestType & USB_DIR_IN)
+ field |= TRB_DIR_IN;
+@@ -3691,17 +3678,12 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ trb_buff_len = td_remain_len;
+
+ /* Set the TRB length, TD size, & interrupter fields. */
+- if (xhci->hci_version < 0x100) {
+- remainder = xhci_td_remainder(
+- td_len - running_total);
+- } else {
+- remainder = xhci_v1_0_td_remainder(
+- running_total, trb_buff_len,
+- total_packet_count, urb,
+- (trbs_per_td - j - 1));
+- }
++ remainder = xhci_td_remainder(xhci, running_total,
++ trb_buff_len, td_len,
++ urb, trbs_per_td - j - 1);
++
+ length_field = TRB_LEN(trb_buff_len) |
+- remainder |
++ TRB_TD_SIZE(remainder) |
+ TRB_INTR_TARGET(0);
+
+ queue_trb(xhci, ep_ring, more_trbs_coming,
+diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
+index f6bb118e4501..910f7fac031f 100644
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -1559,7 +1559,9 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+ "HW died, freeing TD.");
+ urb_priv = urb->hcpriv;
+- for (i = urb_priv->td_cnt; i < urb_priv->length; i++) {
++ for (i = urb_priv->td_cnt;
++ i < urb_priv->length && xhci->devs[urb->dev->slot_id];
++ i++) {
+ td = urb_priv->td[i];
+ if (!list_empty(&td->td_list))
+ list_del_init(&td->td_list);
+diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
+index 0f26dd2697b6..f18cdf0ec795 100644
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1130,6 +1130,8 @@ enum xhci_setup_dev {
+ /* Normal TRB fields */
+ /* transfer_len bitmasks - bits 0:16 */
+ #define TRB_LEN(p) ((p) & 0x1ffff)
++/* TD Size, packets remaining in this TD, bits 21:17 (5 bits, so max 31) */
++#define TRB_TD_SIZE(p) (min((p), (u32)31) << 17)
+ /* Interrupter Target - which MSI-X vector to target the completion event at */
+ #define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22)
+ #define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff)
+@@ -1568,6 +1570,7 @@ struct xhci_hcd {
+ /* For controllers with a broken beyond repair streams implementation */
+ #define XHCI_BROKEN_STREAMS (1 << 19)
+ #define XHCI_PME_STUCK_QUIRK (1 << 20)
++#define XHCI_SSIC_PORT_UNUSED (1 << 22)
+ unsigned int num_active_eps;
+ unsigned int limit_active_eps;
+ /* There are two roothubs to keep track of bus suspend info for */
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index 59b2126b21a3..1dd9919081f8 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -98,6 +98,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */
+ { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */
+ { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
++ { USB_DEVICE(0x10C4, 0x81D7) }, /* IAI Corp. RCB-CV-USB USB to RS485 Adaptor */
+ { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */
+ { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */
+ { USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */
+diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
+index a5a0376bbd48..8c660ae401d8 100644
+--- a/drivers/usb/serial/ftdi_sio.c
++++ b/drivers/usb/serial/ftdi_sio.c
+@@ -824,6 +824,7 @@ static const struct usb_device_id id_table_combined[] = {
+ { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
+ .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+ { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
++ { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_SCU18) },
+ { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
+
+ /* Papouch devices based on FTDI chip */
+diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
+index 2943b97b2a83..7850071c0ae1 100644
+--- a/drivers/usb/serial/ftdi_sio_ids.h
++++ b/drivers/usb/serial/ftdi_sio_ids.h
+@@ -615,6 +615,7 @@
+ */
+ #define RATOC_VENDOR_ID 0x0584
+ #define RATOC_PRODUCT_ID_USB60F 0xb020
++#define RATOC_PRODUCT_ID_SCU18 0xb03a
+
+ /*
+ * Infineon Technologies
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 4021846139c9..88540596973f 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -271,6 +271,8 @@ static void option_instat_callback(struct urb *urb);
+ #define TELIT_PRODUCT_CC864_SINGLE 0x1006
+ #define TELIT_PRODUCT_DE910_DUAL 0x1010
+ #define TELIT_PRODUCT_UE910_V2 0x1012
++#define TELIT_PRODUCT_LE922_USBCFG0 0x1042
++#define TELIT_PRODUCT_LE922_USBCFG3 0x1043
+ #define TELIT_PRODUCT_LE920 0x1200
+ #define TELIT_PRODUCT_LE910 0x1201
+
+@@ -623,6 +625,16 @@ static const struct option_blacklist_info sierra_mc73xx_blacklist = {
+ .reserved = BIT(8) | BIT(10) | BIT(11),
+ };
+
++static const struct option_blacklist_info telit_le922_blacklist_usbcfg0 = {
++ .sendsetup = BIT(2),
++ .reserved = BIT(0) | BIT(1) | BIT(3),
++};
++
++static const struct option_blacklist_info telit_le922_blacklist_usbcfg3 = {
++ .sendsetup = BIT(0),
++ .reserved = BIT(1) | BIT(2) | BIT(3),
++};
++
+ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
+ { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
+@@ -1172,6 +1184,10 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_CC864_SINGLE) },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_DE910_DUAL) },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UE910_V2) },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG0),
++ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
++ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG3),
++ .driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
+ .driver_info = (kernel_ulong_t)&telit_le910_blacklist },
+ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920),
+@@ -1691,7 +1707,7 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_EU3_P) },
+ { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8),
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+- { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX) },
++ { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX, 0xff) },
+ { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PLXX),
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) },
+diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
+index 60afb39eb73c..337a0be89fcf 100644
+--- a/drivers/usb/serial/visor.c
++++ b/drivers/usb/serial/visor.c
+@@ -544,6 +544,11 @@ static int treo_attach(struct usb_serial *serial)
+ (serial->num_interrupt_in == 0))
+ return 0;
+
++ if (serial->num_bulk_in < 2 || serial->num_interrupt_in < 2) {
++ dev_err(&serial->interface->dev, "missing endpoints\n");
++ return -ENODEV;
++ }
++
+ /*
+ * It appears that Treos and Kyoceras want to use the
+ * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
+@@ -597,8 +602,10 @@ static int clie_5_attach(struct usb_serial *serial)
+ */
+
+ /* some sanity check */
+- if (serial->num_ports < 2)
+- return -1;
++ if (serial->num_bulk_out < 2) {
++ dev_err(&serial->interface->dev, "missing bulk out endpoints\n");
++ return -ENODEV;
++ }
+
+ /* port 0 now uses the modified endpoint Address */
+ port = serial->port[0];
+diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
+index 82e80e034f25..89bac470f04e 100644
+--- a/drivers/virtio/virtio_balloon.c
++++ b/drivers/virtio/virtio_balloon.c
+@@ -166,13 +166,13 @@ static void fill_balloon(struct virtio_balloon *vb, size_t num)
+ mutex_unlock(&vb->balloon_lock);
+ }
+
+-static void release_pages_by_pfn(const u32 pfns[], unsigned int num)
++static void release_pages_balloon(struct virtio_balloon *vb)
+ {
+ unsigned int i;
+
+ /* Find pfns pointing at start of each page, get pages and free them. */
+- for (i = 0; i < num; i += VIRTIO_BALLOON_PAGES_PER_PAGE) {
+- struct page *page = balloon_pfn_to_page(pfns[i]);
++ for (i = 0; i < vb->num_pfns; i += VIRTIO_BALLOON_PAGES_PER_PAGE) {
++ struct page *page = balloon_pfn_to_page(vb->pfns[i]);
+ adjust_managed_page_count(page, 1);
+ put_page(page); /* balloon reference */
+ }
+@@ -205,8 +205,8 @@ static unsigned leak_balloon(struct virtio_balloon *vb, size_t num)
+ */
+ if (vb->num_pfns != 0)
+ tell_host(vb, vb->deflate_vq);
++ release_pages_balloon(vb);
+ mutex_unlock(&vb->balloon_lock);
+- release_pages_by_pfn(vb->pfns, vb->num_pfns);
+ return num_freed_pages;
+ }
+
+diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
+index eba1b7ac7294..14f767e8e5c5 100644
+--- a/drivers/virtio/virtio_pci_common.c
++++ b/drivers/virtio/virtio_pci_common.c
+@@ -554,6 +554,7 @@ err_enable_device:
+ static void virtio_pci_remove(struct pci_dev *pci_dev)
+ {
+ struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
++ struct device *dev = get_device(&vp_dev->vdev.dev);
+
+ unregister_virtio_device(&vp_dev->vdev);
+
+@@ -564,6 +565,7 @@ static void virtio_pci_remove(struct pci_dev *pci_dev)
+
+ pci_release_regions(pci_dev);
+ pci_disable_device(pci_dev);
++ put_device(dev);
+ }
+
+ static struct pci_driver virtio_pci_driver = {
+diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
+index 0ef5cc13fae2..61205e3bbefa 100644
+--- a/fs/btrfs/btrfs_inode.h
++++ b/fs/btrfs/btrfs_inode.h
+@@ -192,6 +192,10 @@ struct btrfs_inode {
+ /* File creation time. */
+ struct timespec i_otime;
+
++ /* Hook into fs_info->delayed_iputs */
++ struct list_head delayed_iput;
++ long delayed_iput_count;
++
+ struct inode vfs_inode;
+ };
+
+diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
+index 6f364e1d8d3d..699944a07491 100644
+--- a/fs/btrfs/ctree.h
++++ b/fs/btrfs/ctree.h
+@@ -1544,7 +1544,7 @@ struct btrfs_fs_info {
+
+ spinlock_t delayed_iput_lock;
+ struct list_head delayed_iputs;
+- struct rw_semaphore delayed_iput_sem;
++ struct mutex cleaner_delayed_iput_mutex;
+
+ /* this protects tree_mod_seq_list */
+ spinlock_t tree_mod_seq_lock;
+diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
+index 2ef9a4b72d06..99e8f60c7962 100644
+--- a/fs/btrfs/disk-io.c
++++ b/fs/btrfs/disk-io.c
+@@ -1772,8 +1772,11 @@ static int cleaner_kthread(void *arg)
+ goto sleep;
+ }
+
++ mutex_lock(&root->fs_info->cleaner_delayed_iput_mutex);
+ btrfs_run_delayed_iputs(root);
+ btrfs_delete_unused_bgs(root->fs_info);
++ mutex_unlock(&root->fs_info->cleaner_delayed_iput_mutex);
++
+ again = btrfs_clean_one_deleted_snapshot(root);
+ mutex_unlock(&root->fs_info->cleaner_mutex);
+
+@@ -2491,8 +2494,8 @@ int open_ctree(struct super_block *sb,
+ mutex_init(&fs_info->unused_bg_unpin_mutex);
+ mutex_init(&fs_info->reloc_mutex);
+ mutex_init(&fs_info->delalloc_root_mutex);
++ mutex_init(&fs_info->cleaner_delayed_iput_mutex);
+ seqlock_init(&fs_info->profiles_lock);
+- init_rwsem(&fs_info->delayed_iput_sem);
+
+ init_completion(&fs_info->kobj_unregister);
+ INIT_LIST_HEAD(&fs_info->dirty_cowonly_roots);
+diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
+index 0ec3acd14cbf..3c1938000a5d 100644
+--- a/fs/btrfs/extent-tree.c
++++ b/fs/btrfs/extent-tree.c
+@@ -3985,11 +3985,12 @@ commit_trans:
+ if (ret)
+ return ret;
+ /*
+- * make sure that all running delayed iput are
+- * done
++ * The cleaner kthread might still be doing iput
++ * operations. Wait for it to finish so that
++ * more space is released.
+ */
+- down_write(&root->fs_info->delayed_iput_sem);
+- up_write(&root->fs_info->delayed_iput_sem);
++ mutex_lock(&root->fs_info->cleaner_delayed_iput_mutex);
++ mutex_unlock(&root->fs_info->cleaner_delayed_iput_mutex);
+ goto again;
+ } else {
+ btrfs_end_transaction(trans, root);
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index 5136c73b3dce..df4e0462976e 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -3080,56 +3080,46 @@ static int btrfs_readpage_end_io_hook(struct btrfs_io_bio *io_bio,
+ start, (size_t)(end - start + 1));
+ }
+
+-struct delayed_iput {
+- struct list_head list;
+- struct inode *inode;
+-};
+-
+-/* JDM: If this is fs-wide, why can't we add a pointer to
+- * btrfs_inode instead and avoid the allocation? */
+ void btrfs_add_delayed_iput(struct inode *inode)
+ {
+ struct btrfs_fs_info *fs_info = BTRFS_I(inode)->root->fs_info;
+- struct delayed_iput *delayed;
++ struct btrfs_inode *binode = BTRFS_I(inode);
+
+ if (atomic_add_unless(&inode->i_count, -1, 1))
+ return;
+
+- delayed = kmalloc(sizeof(*delayed), GFP_NOFS | __GFP_NOFAIL);
+- delayed->inode = inode;
+-
+ spin_lock(&fs_info->delayed_iput_lock);
+- list_add_tail(&delayed->list, &fs_info->delayed_iputs);
++ if (binode->delayed_iput_count == 0) {
++ ASSERT(list_empty(&binode->delayed_iput));
++ list_add_tail(&binode->delayed_iput, &fs_info->delayed_iputs);
++ } else {
++ binode->delayed_iput_count++;
++ }
+ spin_unlock(&fs_info->delayed_iput_lock);
+ }
+
+ void btrfs_run_delayed_iputs(struct btrfs_root *root)
+ {
+- LIST_HEAD(list);
+ struct btrfs_fs_info *fs_info = root->fs_info;
+- struct delayed_iput *delayed;
+- int empty;
+-
+- spin_lock(&fs_info->delayed_iput_lock);
+- empty = list_empty(&fs_info->delayed_iputs);
+- spin_unlock(&fs_info->delayed_iput_lock);
+- if (empty)
+- return;
+-
+- down_read(&fs_info->delayed_iput_sem);
+
+ spin_lock(&fs_info->delayed_iput_lock);
+- list_splice_init(&fs_info->delayed_iputs, &list);
+- spin_unlock(&fs_info->delayed_iput_lock);
+-
+- while (!list_empty(&list)) {
+- delayed = list_entry(list.next, struct delayed_iput, list);
+- list_del(&delayed->list);
+- iput(delayed->inode);
+- kfree(delayed);
++ while (!list_empty(&fs_info->delayed_iputs)) {
++ struct btrfs_inode *inode;
++
++ inode = list_first_entry(&fs_info->delayed_iputs,
++ struct btrfs_inode, delayed_iput);
++ if (inode->delayed_iput_count) {
++ inode->delayed_iput_count--;
++ list_move_tail(&inode->delayed_iput,
++ &fs_info->delayed_iputs);
++ } else {
++ list_del_init(&inode->delayed_iput);
++ }
++ spin_unlock(&fs_info->delayed_iput_lock);
++ iput(&inode->vfs_inode);
++ spin_lock(&fs_info->delayed_iput_lock);
+ }
+-
+- up_read(&root->fs_info->delayed_iput_sem);
++ spin_unlock(&fs_info->delayed_iput_lock);
+ }
+
+ /*
+@@ -8890,6 +8880,7 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
+ ei->dir_index = 0;
+ ei->last_unlink_trans = 0;
+ ei->last_log_commit = 0;
++ ei->delayed_iput_count = 0;
+
+ spin_lock_init(&ei->lock);
+ ei->outstanding_extents = 0;
+@@ -8914,6 +8905,7 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
+ mutex_init(&ei->delalloc_mutex);
+ btrfs_ordered_inode_tree_init(&ei->ordered_tree);
+ INIT_LIST_HEAD(&ei->delalloc_inodes);
++ INIT_LIST_HEAD(&ei->delayed_iput);
+ RB_CLEAR_NODE(&ei->rb_node);
+
+ return inode;
+diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
+index 174f5e1e00ab..5113b7257b45 100644
+--- a/fs/btrfs/volumes.c
++++ b/fs/btrfs/volumes.c
+@@ -6322,6 +6322,14 @@ int btrfs_read_sys_array(struct btrfs_root *root)
+ goto out_short_read;
+
+ num_stripes = btrfs_chunk_num_stripes(sb, chunk);
++ if (!num_stripes) {
++ printk(KERN_ERR
++ "BTRFS: invalid number of stripes %u in sys_array at offset %u\n",
++ num_stripes, cur_offset);
++ ret = -EIO;
++ break;
++ }
++
+ len = btrfs_chunk_item_size(num_stripes);
+ if (cur_offset + len > array_size)
+ goto out_short_read;
+diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
+index 7febcf2475c5..50b268483302 100644
+--- a/fs/cifs/cifs_debug.c
++++ b/fs/cifs/cifs_debug.c
+@@ -50,7 +50,7 @@ void cifs_vfs_err(const char *fmt, ...)
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+- pr_err("CIFS VFS: %pV", &vaf);
++ pr_err_ratelimited("CIFS VFS: %pV", &vaf);
+
+ va_end(args);
+ }
+diff --git a/fs/cifs/cifs_debug.h b/fs/cifs/cifs_debug.h
+index f40fbaca1b2a..66cf0f9fff89 100644
+--- a/fs/cifs/cifs_debug.h
++++ b/fs/cifs/cifs_debug.h
+@@ -51,14 +51,13 @@ __printf(1, 2) void cifs_vfs_err(const char *fmt, ...);
+ /* information message: e.g., configuration, major event */
+ #define cifs_dbg(type, fmt, ...) \
+ do { \
+- if (type == FYI) { \
+- if (cifsFYI & CIFS_INFO) { \
+- pr_debug("%s: " fmt, __FILE__, ##__VA_ARGS__); \
+- } \
++ if (type == FYI && cifsFYI & CIFS_INFO) { \
++ pr_debug_ratelimited("%s: " \
++ fmt, __FILE__, ##__VA_ARGS__); \
+ } else if (type == VFS) { \
+ cifs_vfs_err(fmt, ##__VA_ARGS__); \
+ } else if (type == NOISY && type != 0) { \
+- pr_debug(fmt, ##__VA_ARGS__); \
++ pr_debug_ratelimited(fmt, ##__VA_ARGS__); \
+ } \
+ } while (0)
+
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index 8383d5ea4202..de626b939811 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -357,7 +357,6 @@ cifs_reconnect(struct TCP_Server_Info *server)
+ server->session_key.response = NULL;
+ server->session_key.len = 0;
+ server->lstrp = jiffies;
+- mutex_unlock(&server->srv_mutex);
+
+ /* mark submitted MIDs for retry and issue callback */
+ INIT_LIST_HEAD(&retry_list);
+@@ -370,6 +369,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
+ list_move(&mid_entry->qhead, &retry_list);
+ }
+ spin_unlock(&GlobalMid_Lock);
++ mutex_unlock(&server->srv_mutex);
+
+ cifs_dbg(FYI, "%s: issuing mid callbacks\n", __func__);
+ list_for_each_safe(tmp, tmp2, &retry_list) {
+diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
+index b1eede3678a9..3634c7adf7d2 100644
+--- a/fs/cifs/readdir.c
++++ b/fs/cifs/readdir.c
+@@ -847,6 +847,7 @@ int cifs_readdir(struct file *file, struct dir_context *ctx)
+ * if buggy server returns . and .. late do we want to
+ * check for that here?
+ */
++ *tmp_buf = 0;
+ rc = cifs_filldir(current_entry, file, ctx,
+ tmp_buf, max_len);
+ if (rc) {
+diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
+index 126f46b887cc..66106f6ed7b4 100644
+--- a/fs/cifs/transport.c
++++ b/fs/cifs/transport.c
+@@ -576,14 +576,16 @@ cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst,
+ cifs_in_send_dec(server);
+ cifs_save_when_sent(mid);
+
+- if (rc < 0)
++ if (rc < 0) {
+ server->sequence_number -= 2;
++ cifs_delete_mid(mid);
++ }
++
+ mutex_unlock(&server->srv_mutex);
+
+ if (rc == 0)
+ return 0;
+
+- cifs_delete_mid(mid);
+ add_credits_and_wake_if(server, credits, optype);
+ return rc;
+ }
+diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
+index de2d6245e9fa..f895a85d9304 100644
+--- a/fs/hostfs/hostfs_kern.c
++++ b/fs/hostfs/hostfs_kern.c
+@@ -730,15 +730,13 @@ static int hostfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
+
+ init_special_inode(inode, mode, dev);
+ err = do_mknod(name, mode, MAJOR(dev), MINOR(dev));
+- if (!err)
++ if (err)
+ goto out_free;
+
+ err = read_name(inode, name);
+ __putname(name);
+ if (err)
+ goto out_put;
+- if (err)
+- goto out_put;
+
+ d_instantiate(dentry, inode);
+ return 0;
+diff --git a/fs/locks.c b/fs/locks.c
+index d3d558ba4da7..8501eecb2af0 100644
+--- a/fs/locks.c
++++ b/fs/locks.c
+@@ -2154,7 +2154,6 @@ int fcntl_setlk(unsigned int fd, struct file *filp, unsigned int cmd,
+ goto out;
+ }
+
+-again:
+ error = flock_to_posix_lock(filp, file_lock, &flock);
+ if (error)
+ goto out;
+@@ -2196,19 +2195,22 @@ again:
+ * Attempt to detect a close/fcntl race and recover by
+ * releasing the lock that was just acquired.
+ */
+- /*
+- * we need that spin_lock here - it prevents reordering between
+- * update of i_flctx->flc_posix and check for it done in close().
+- * rcu_read_lock() wouldn't do.
+- */
+- spin_lock(¤t->files->file_lock);
+- f = fcheck(fd);
+- spin_unlock(¤t->files->file_lock);
+- if (!error && f != filp && flock.l_type != F_UNLCK) {
+- flock.l_type = F_UNLCK;
+- goto again;
++ if (!error && file_lock->fl_type != F_UNLCK) {
++ /*
++ * We need that spin_lock here - it prevents reordering between
++ * update of i_flctx->flc_posix and check for it done in
++ * close(). rcu_read_lock() wouldn't do.
++ */
++ spin_lock(¤t->files->file_lock);
++ f = fcheck(fd);
++ spin_unlock(¤t->files->file_lock);
++ if (f != filp) {
++ file_lock->fl_type = F_UNLCK;
++ error = do_lock_file_wait(filp, cmd, file_lock);
++ WARN_ON_ONCE(error);
++ error = -EBADF;
++ }
+ }
+-
+ out:
+ locks_free_lock(file_lock);
+ return error;
+@@ -2294,7 +2296,6 @@ int fcntl_setlk64(unsigned int fd, struct file *filp, unsigned int cmd,
+ goto out;
+ }
+
+-again:
+ error = flock64_to_posix_lock(filp, file_lock, &flock);
+ if (error)
+ goto out;
+@@ -2336,14 +2337,22 @@ again:
+ * Attempt to detect a close/fcntl race and recover by
+ * releasing the lock that was just acquired.
+ */
+- spin_lock(¤t->files->file_lock);
+- f = fcheck(fd);
+- spin_unlock(¤t->files->file_lock);
+- if (!error && f != filp && flock.l_type != F_UNLCK) {
+- flock.l_type = F_UNLCK;
+- goto again;
++ if (!error && file_lock->fl_type != F_UNLCK) {
++ /*
++ * We need that spin_lock here - it prevents reordering between
++ * update of i_flctx->flc_posix and check for it done in
++ * close(). rcu_read_lock() wouldn't do.
++ */
++ spin_lock(¤t->files->file_lock);
++ f = fcheck(fd);
++ spin_unlock(¤t->files->file_lock);
++ if (f != filp) {
++ file_lock->fl_type = F_UNLCK;
++ error = do_lock_file_wait(filp, cmd, file_lock);
++ WARN_ON_ONCE(error);
++ error = -EBADF;
++ }
+ }
+-
+ out:
+ locks_free_lock(file_lock);
+ return error;
+diff --git a/fs/nfs/client.c b/fs/nfs/client.c
+index 892aefff3630..fdd234206dff 100644
+--- a/fs/nfs/client.c
++++ b/fs/nfs/client.c
+@@ -775,7 +775,7 @@ static int nfs_init_server(struct nfs_server *server,
+ server->options = data->options;
+ server->caps |= NFS_CAP_HARDLINKS|NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
+ NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|NFS_CAP_OWNER_GROUP|
+- NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME|NFS_CAP_CHANGE_ATTR;
++ NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME;
+
+ if (data->rsize)
+ server->rsize = nfs_block_size(data->rsize, NULL);
+diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
+index fecd9201dbad..c2abdc7db6c3 100644
+--- a/fs/nfs/flexfilelayout/flexfilelayout.c
++++ b/fs/nfs/flexfilelayout/flexfilelayout.c
+@@ -1484,11 +1484,9 @@ ff_layout_encode_layoutreturn(struct pnfs_layout_hdr *lo,
+ start = xdr_reserve_space(xdr, 4);
+ BUG_ON(!start);
+
+- if (ff_layout_encode_ioerr(flo, xdr, args))
+- goto out;
+-
++ ff_layout_encode_ioerr(flo, xdr, args);
+ ff_layout_encode_iostats(flo, xdr, args);
+-out:
++
+ *start = cpu_to_be32((xdr->p - start - 1) * 4);
+ dprintk("%s: Return\n", __func__);
+ }
+diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
+index 7f22b6c6fb50..723b8922d76b 100644
+--- a/fs/nfs/inode.c
++++ b/fs/nfs/inode.c
+@@ -442,7 +442,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ if (fattr->valid & NFS_ATTR_FATTR_CHANGE)
+ inode->i_version = fattr->change_attr;
+- else if (nfs_server_capable(inode, NFS_CAP_CHANGE_ATTR))
++ else
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ if (fattr->valid & NFS_ATTR_FATTR_SIZE)
+ inode->i_size = nfs_size_to_loff_t(fattr->size);
+@@ -1627,6 +1627,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ unsigned long invalid = 0;
+ unsigned long now = jiffies;
+ unsigned long save_cache_validity;
++ bool cache_revalidated = true;
+
+ dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n",
+ __func__, inode->i_sb->s_id, inode->i_ino,
+@@ -1688,22 +1689,28 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ nfs_force_lookup_revalidate(inode);
+ inode->i_version = fattr->change_attr;
+ }
+- } else if (server->caps & NFS_CAP_CHANGE_ATTR)
++ } else {
+ nfsi->cache_validity |= save_cache_validity;
++ cache_revalidated = false;
++ }
+
+ if (fattr->valid & NFS_ATTR_FATTR_MTIME) {
+ memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
+- } else if (server->caps & NFS_CAP_MTIME)
++ } else if (server->caps & NFS_CAP_MTIME) {
+ nfsi->cache_validity |= save_cache_validity &
+ (NFS_INO_INVALID_ATTR
+ | NFS_INO_REVAL_FORCED);
++ cache_revalidated = false;
++ }
+
+ if (fattr->valid & NFS_ATTR_FATTR_CTIME) {
+ memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
+- } else if (server->caps & NFS_CAP_CTIME)
++ } else if (server->caps & NFS_CAP_CTIME) {
+ nfsi->cache_validity |= save_cache_validity &
+ (NFS_INO_INVALID_ATTR
+ | NFS_INO_REVAL_FORCED);
++ cache_revalidated = false;
++ }
+
+ /* Check if our cached file size is stale */
+ if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
+@@ -1723,19 +1730,23 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ (long long)cur_isize,
+ (long long)new_isize);
+ }
+- } else
++ } else {
+ nfsi->cache_validity |= save_cache_validity &
+ (NFS_INO_INVALID_ATTR
+ | NFS_INO_REVAL_PAGECACHE
+ | NFS_INO_REVAL_FORCED);
++ cache_revalidated = false;
++ }
+
+
+ if (fattr->valid & NFS_ATTR_FATTR_ATIME)
+ memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
+- else if (server->caps & NFS_CAP_ATIME)
++ else if (server->caps & NFS_CAP_ATIME) {
+ nfsi->cache_validity |= save_cache_validity &
+ (NFS_INO_INVALID_ATIME
+ | NFS_INO_REVAL_FORCED);
++ cache_revalidated = false;
++ }
+
+ if (fattr->valid & NFS_ATTR_FATTR_MODE) {
+ if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)) {
+@@ -1744,36 +1755,42 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ inode->i_mode = newmode;
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ }
+- } else if (server->caps & NFS_CAP_MODE)
++ } else if (server->caps & NFS_CAP_MODE) {
+ nfsi->cache_validity |= save_cache_validity &
+ (NFS_INO_INVALID_ATTR
+ | NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_REVAL_FORCED);
++ cache_revalidated = false;
++ }
+
+ if (fattr->valid & NFS_ATTR_FATTR_OWNER) {
+ if (!uid_eq(inode->i_uid, fattr->uid)) {
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ inode->i_uid = fattr->uid;
+ }
+- } else if (server->caps & NFS_CAP_OWNER)
++ } else if (server->caps & NFS_CAP_OWNER) {
+ nfsi->cache_validity |= save_cache_validity &
+ (NFS_INO_INVALID_ATTR
+ | NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_REVAL_FORCED);
++ cache_revalidated = false;
++ }
+
+ if (fattr->valid & NFS_ATTR_FATTR_GROUP) {
+ if (!gid_eq(inode->i_gid, fattr->gid)) {
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ inode->i_gid = fattr->gid;
+ }
+- } else if (server->caps & NFS_CAP_OWNER_GROUP)
++ } else if (server->caps & NFS_CAP_OWNER_GROUP) {
+ nfsi->cache_validity |= save_cache_validity &
+ (NFS_INO_INVALID_ATTR
+ | NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_REVAL_FORCED);
++ cache_revalidated = false;
++ }
+
+ if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
+ if (inode->i_nlink != fattr->nlink) {
+@@ -1782,19 +1799,22 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ invalid |= NFS_INO_INVALID_DATA;
+ set_nlink(inode, fattr->nlink);
+ }
+- } else if (server->caps & NFS_CAP_NLINK)
++ } else if (server->caps & NFS_CAP_NLINK) {
+ nfsi->cache_validity |= save_cache_validity &
+ (NFS_INO_INVALID_ATTR
+ | NFS_INO_REVAL_FORCED);
++ cache_revalidated = false;
++ }
+
+ if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) {
+ /*
+ * report the blocks in 512byte units
+ */
+ inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
+- }
+- if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
++ } else if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
+ inode->i_blocks = fattr->du.nfs2.blocks;
++ else
++ cache_revalidated = false;
+
+ /* Update attrtimeo value if we're out of the unstable period */
+ if (invalid & NFS_INO_INVALID_ATTR) {
+@@ -1804,9 +1824,13 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ /* Set barrier to be more recent than all outstanding updates */
+ nfsi->attr_gencount = nfs_inc_attr_generation_counter();
+ } else {
+- if (!time_in_range_open(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
+- if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode))
+- nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
++ if (cache_revalidated) {
++ if (!time_in_range_open(now, nfsi->attrtimeo_timestamp,
++ nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
++ nfsi->attrtimeo <<= 1;
++ if (nfsi->attrtimeo > NFS_MAXATTRTIMEO(inode))
++ nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
++ }
+ nfsi->attrtimeo_timestamp = now;
+ }
+ /* Set the barrier to be more recent than this fattr */
+@@ -1815,7 +1839,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ }
+
+ /* Don't declare attrcache up to date if there were no attrs! */
+- if (fattr->valid != 0)
++ if (cache_revalidated)
+ invalid &= ~NFS_INO_INVALID_ATTR;
+
+ /* Don't invalidate the data if we were to blame */
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index 8f393fcc313b..2c4f41c34366 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -1284,6 +1284,7 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
+ * Protect the call to nfs4_state_set_mode_locked and
+ * serialise the stateid update
+ */
++ spin_lock(&state->owner->so_lock);
+ write_seqlock(&state->seqlock);
+ if (deleg_stateid != NULL) {
+ nfs4_stateid_copy(&state->stateid, deleg_stateid);
+@@ -1292,7 +1293,6 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
+ if (open_stateid != NULL)
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
+ write_sequnlock(&state->seqlock);
+- spin_lock(&state->owner->so_lock);
+ update_open_stateflags(state, fmode);
+ spin_unlock(&state->owner->so_lock);
+ }
+@@ -8512,7 +8512,6 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
+ .minor_version = 0,
+ .init_caps = NFS_CAP_READDIRPLUS
+ | NFS_CAP_ATOMIC_OPEN
+- | NFS_CAP_CHANGE_ATTR
+ | NFS_CAP_POSIX_LOCK,
+ .init_client = nfs40_init_client,
+ .shutdown_client = nfs40_shutdown_client,
+@@ -8538,7 +8537,6 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
+ .minor_version = 1,
+ .init_caps = NFS_CAP_READDIRPLUS
+ | NFS_CAP_ATOMIC_OPEN
+- | NFS_CAP_CHANGE_ATTR
+ | NFS_CAP_POSIX_LOCK
+ | NFS_CAP_STATEID_NFSV41
+ | NFS_CAP_ATOMIC_OPEN_V1,
+@@ -8561,7 +8559,6 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
+ .minor_version = 2,
+ .init_caps = NFS_CAP_READDIRPLUS
+ | NFS_CAP_ATOMIC_OPEN
+- | NFS_CAP_CHANGE_ATTR
+ | NFS_CAP_POSIX_LOCK
+ | NFS_CAP_STATEID_NFSV41
+ | NFS_CAP_ATOMIC_OPEN_V1
+diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
+index 482cfd34472d..523e485a11b8 100644
+--- a/fs/ocfs2/dlm/dlmmaster.c
++++ b/fs/ocfs2/dlm/dlmmaster.c
+@@ -2518,6 +2518,11 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
+ spin_lock(&dlm->master_lock);
+ ret = dlm_add_migration_mle(dlm, res, mle, &oldmle, name,
+ namelen, target, dlm->node_num);
++ /* get an extra reference on the mle.
++ * otherwise the assert_master from the new
++ * master will destroy this.
++ */
++ dlm_get_mle_inuse(mle);
+ spin_unlock(&dlm->master_lock);
+ spin_unlock(&dlm->spinlock);
+
+@@ -2553,6 +2558,7 @@ fail:
+ if (mle_added) {
+ dlm_mle_detach_hb_events(dlm, mle);
+ dlm_put_mle(mle);
++ dlm_put_mle_inuse(mle);
+ } else if (mle) {
+ kmem_cache_free(dlm_mle_cache, mle);
+ mle = NULL;
+@@ -2570,17 +2576,6 @@ fail:
+ * ensure that all assert_master work is flushed. */
+ flush_workqueue(dlm->dlm_worker);
+
+- /* get an extra reference on the mle.
+- * otherwise the assert_master from the new
+- * master will destroy this.
+- * also, make sure that all callers of dlm_get_mle
+- * take both dlm->spinlock and dlm->master_lock */
+- spin_lock(&dlm->spinlock);
+- spin_lock(&dlm->master_lock);
+- dlm_get_mle_inuse(mle);
+- spin_unlock(&dlm->master_lock);
+- spin_unlock(&dlm->spinlock);
+-
+ /* notify new node and send all lock state */
+ /* call send_one_lockres with migration flag.
+ * this serves as notice to the target node that a
+@@ -3309,6 +3304,15 @@ top:
+ mle->new_master != dead_node)
+ continue;
+
++ if (mle->new_master == dead_node && mle->inuse) {
++ mlog(ML_NOTICE, "%s: target %u died during "
++ "migration from %u, the MLE is "
++ "still keep used, ignore it!\n",
++ dlm->name, dead_node,
++ mle->master);
++ continue;
++ }
++
+ /* If we have reached this point, this mle needs to be
+ * removed from the list and freed. */
+ dlm_clean_migration_mle(dlm, mle);
+diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
+index 3d90ad7ff91f..f25ff5d3a2f9 100644
+--- a/fs/ocfs2/dlm/dlmrecovery.c
++++ b/fs/ocfs2/dlm/dlmrecovery.c
+@@ -2360,6 +2360,8 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
+ break;
+ }
+ }
++ dlm_lockres_clear_refmap_bit(dlm, res,
++ dead_node);
+ spin_unlock(&res->spinlock);
+ continue;
+ }
+diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
+index 23157e40dd74..3623ab6fa97f 100644
+--- a/fs/ocfs2/dlmglue.c
++++ b/fs/ocfs2/dlmglue.c
+@@ -1390,6 +1390,7 @@ static int __ocfs2_cluster_lock(struct ocfs2_super *osb,
+ unsigned int gen;
+ int noqueue_attempted = 0;
+ int dlm_locked = 0;
++ int kick_dc = 0;
+
+ if (!(lockres->l_flags & OCFS2_LOCK_INITIALIZED)) {
+ mlog_errno(-EINVAL);
+@@ -1524,7 +1525,12 @@ update_holders:
+ unlock:
+ lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
+
++ /* ocfs2_unblock_lock reques on seeing OCFS2_LOCK_UPCONVERT_FINISHING */
++ kick_dc = (lockres->l_flags & OCFS2_LOCK_BLOCKED);
++
+ spin_unlock_irqrestore(&lockres->l_lock, flags);
++ if (kick_dc)
++ ocfs2_wake_downconvert_thread(osb);
+ out:
+ /*
+ * This is helping work around a lock inversion between the page lock
+diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
+index 871fcb67be97..758012bfd5f0 100644
+--- a/fs/overlayfs/copy_up.c
++++ b/fs/overlayfs/copy_up.c
+@@ -22,9 +22,9 @@
+
+ int ovl_copy_xattr(struct dentry *old, struct dentry *new)
+ {
+- ssize_t list_size, size;
+- char *buf, *name, *value;
+- int error;
++ ssize_t list_size, size, value_size = 0;
++ char *buf, *name, *value = NULL;
++ int uninitialized_var(error);
+
+ if (!old->d_inode->i_op->getxattr ||
+ !new->d_inode->i_op->getxattr)
+@@ -41,29 +41,40 @@ int ovl_copy_xattr(struct dentry *old, struct dentry *new)
+ if (!buf)
+ return -ENOMEM;
+
+- error = -ENOMEM;
+- value = kmalloc(XATTR_SIZE_MAX, GFP_KERNEL);
+- if (!value)
+- goto out;
+-
+ list_size = vfs_listxattr(old, buf, list_size);
+ if (list_size <= 0) {
+ error = list_size;
+- goto out_free_value;
++ goto out;
+ }
+
+ for (name = buf; name < (buf + list_size); name += strlen(name) + 1) {
+- size = vfs_getxattr(old, name, value, XATTR_SIZE_MAX);
+- if (size <= 0) {
++retry:
++ size = vfs_getxattr(old, name, value, value_size);
++ if (size == -ERANGE)
++ size = vfs_getxattr(old, name, NULL, 0);
++
++ if (size < 0) {
+ error = size;
+- goto out_free_value;
++ break;
++ }
++
++ if (size > value_size) {
++ void *new;
++
++ new = krealloc(value, size, GFP_KERNEL);
++ if (!new) {
++ error = -ENOMEM;
++ break;
++ }
++ value = new;
++ value_size = size;
++ goto retry;
+ }
++
+ error = vfs_setxattr(new, name, value, size, 0);
+ if (error)
+- goto out_free_value;
++ break;
+ }
+-
+-out_free_value:
+ kfree(value);
+ out:
+ kfree(buf);
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index ba0db2638946..a1b069e5e363 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -45,6 +45,19 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr)
+ int err;
+ struct dentry *upperdentry;
+
++ /*
++ * Check for permissions before trying to copy-up. This is redundant
++ * since it will be rechecked later by ->setattr() on upper dentry. But
++ * without this, copy-up can be triggered by just about anybody.
++ *
++ * We don't initialize inode->size, which just means that
++ * inode_newsize_ok() will always check against MAX_LFS_FILESIZE and not
++ * check for a swapfile (which this won't be anyway).
++ */
++ err = inode_change_ok(dentry->d_inode, attr);
++ if (err)
++ return err;
++
+ err = ovl_want_write(dentry);
+ if (err)
+ goto out;
+diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
+index 70e9af551600..adcb1398c481 100644
+--- a/fs/overlayfs/readdir.c
++++ b/fs/overlayfs/readdir.c
+@@ -571,7 +571,8 @@ void ovl_cleanup_whiteouts(struct dentry *upper, struct list_head *list)
+ (int) PTR_ERR(dentry));
+ continue;
+ }
+- ovl_cleanup(upper->d_inode, dentry);
++ if (dentry->d_inode)
++ ovl_cleanup(upper->d_inode, dentry);
+ dput(dentry);
+ }
+ mutex_unlock(&upper->d_inode->i_mutex);
+diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
+index d74af7f78fec..bd6d5c1e667d 100644
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -9,6 +9,7 @@
+
+ #include <linux/fs.h>
+ #include <linux/namei.h>
++#include <linux/pagemap.h>
+ #include <linux/xattr.h>
+ #include <linux/security.h>
+ #include <linux/mount.h>
+@@ -847,6 +848,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
+ }
+
+ sb->s_stack_depth = 0;
++ sb->s_maxbytes = MAX_LFS_FILESIZE;
+ if (ufs->config.upperdir) {
+ if (!ufs->config.workdir) {
+ pr_err("overlayfs: missing 'workdir'\n");
+@@ -986,6 +988,9 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
+
+ root_dentry->d_fsdata = oe;
+
++ ovl_copyattr(ovl_dentry_real(root_dentry)->d_inode,
++ root_dentry->d_inode);
++
+ sb->s_magic = OVERLAYFS_SUPER_MAGIC;
+ sb->s_op = &ovl_super_operations;
+ sb->s_root = root_dentry;
+diff --git a/fs/udf/inode.c b/fs/udf/inode.c
+index 6afac3d561ac..78a40ef0c463 100644
+--- a/fs/udf/inode.c
++++ b/fs/udf/inode.c
+@@ -2052,14 +2052,29 @@ void udf_write_aext(struct inode *inode, struct extent_position *epos,
+ epos->offset += adsize;
+ }
+
++/*
++ * Only 1 indirect extent in a row really makes sense but allow upto 16 in case
++ * someone does some weird stuff.
++ */
++#define UDF_MAX_INDIR_EXTS 16
++
+ int8_t udf_next_aext(struct inode *inode, struct extent_position *epos,
+ struct kernel_lb_addr *eloc, uint32_t *elen, int inc)
+ {
+ int8_t etype;
++ unsigned int indirections = 0;
+
+ while ((etype = udf_current_aext(inode, epos, eloc, elen, inc)) ==
+ (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) {
+ int block;
++
++ if (++indirections > UDF_MAX_INDIR_EXTS) {
++ udf_err(inode->i_sb,
++ "too many indirect extents in inode %lu\n",
++ inode->i_ino);
++ return -1;
++ }
++
+ epos->block = *eloc;
+ epos->offset = sizeof(struct allocExtDesc);
+ brelse(epos->bh);
+diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c
+index b84fee372734..2eafe2c4d239 100644
+--- a/fs/udf/unicode.c
++++ b/fs/udf/unicode.c
+@@ -133,11 +133,15 @@ int udf_CS0toUTF8(struct ustr *utf_o, const struct ustr *ocu_i)
+ if (c < 0x80U)
+ utf_o->u_name[utf_o->u_len++] = (uint8_t)c;
+ else if (c < 0x800U) {
++ if (utf_o->u_len > (UDF_NAME_LEN - 4))
++ break;
+ utf_o->u_name[utf_o->u_len++] =
+ (uint8_t)(0xc0 | (c >> 6));
+ utf_o->u_name[utf_o->u_len++] =
+ (uint8_t)(0x80 | (c & 0x3f));
+ } else {
++ if (utf_o->u_len > (UDF_NAME_LEN - 5))
++ break;
+ utf_o->u_name[utf_o->u_len++] =
+ (uint8_t)(0xe0 | (c >> 12));
+ utf_o->u_name[utf_o->u_len++] =
+@@ -178,17 +182,22 @@ int udf_CS0toUTF8(struct ustr *utf_o, const struct ustr *ocu_i)
+ static int udf_UTF8toCS0(dstring *ocu, struct ustr *utf, int length)
+ {
+ unsigned c, i, max_val, utf_char;
+- int utf_cnt, u_len;
++ int utf_cnt, u_len, u_ch;
+
+ memset(ocu, 0, sizeof(dstring) * length);
+ ocu[0] = 8;
+ max_val = 0xffU;
++ u_ch = 1;
+
+ try_again:
+ u_len = 0U;
+ utf_char = 0U;
+ utf_cnt = 0U;
+ for (i = 0U; i < utf->u_len; i++) {
++ /* Name didn't fit? */
++ if (u_len + 1 + u_ch >= length)
++ return 0;
++
+ c = (uint8_t)utf->u_name[i];
+
+ /* Complete a multi-byte UTF-8 character */
+@@ -230,6 +239,7 @@ try_again:
+ if (max_val == 0xffU) {
+ max_val = 0xffffU;
+ ocu[0] = (uint8_t)0x10U;
++ u_ch = 2;
+ goto try_again;
+ }
+ goto error_out;
+@@ -282,7 +292,7 @@ static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,
+ c = (c << 8) | ocu[i++];
+
+ len = nls->uni2char(c, &utf_o->u_name[utf_o->u_len],
+- UDF_NAME_LEN - utf_o->u_len);
++ UDF_NAME_LEN - 2 - utf_o->u_len);
+ /* Valid character? */
+ if (len >= 0)
+ utf_o->u_len += len;
+@@ -300,15 +310,19 @@ static int udf_NLStoCS0(struct nls_table *nls, dstring *ocu, struct ustr *uni,
+ int len;
+ unsigned i, max_val;
+ uint16_t uni_char;
+- int u_len;
++ int u_len, u_ch;
+
+ memset(ocu, 0, sizeof(dstring) * length);
+ ocu[0] = 8;
+ max_val = 0xffU;
++ u_ch = 1;
+
+ try_again:
+ u_len = 0U;
+ for (i = 0U; i < uni->u_len; i++) {
++ /* Name didn't fit? */
++ if (u_len + 1 + u_ch >= length)
++ return 0;
+ len = nls->char2uni(&uni->u_name[i], uni->u_len - i, &uni_char);
+ if (!len)
+ continue;
+@@ -321,6 +335,7 @@ try_again:
+ if (uni_char > max_val) {
+ max_val = 0xffffU;
+ ocu[0] = (uint8_t)0x10U;
++ u_ch = 2;
+ goto try_again;
+ }
+
+diff --git a/fs/xfs/libxfs/xfs_dquot_buf.c b/fs/xfs/libxfs/xfs_dquot_buf.c
+index 6fbf2d853a54..48aff071591d 100644
+--- a/fs/xfs/libxfs/xfs_dquot_buf.c
++++ b/fs/xfs/libxfs/xfs_dquot_buf.c
+@@ -54,7 +54,7 @@ xfs_dqcheck(
+ xfs_dqid_t id,
+ uint type, /* used only when IO_dorepair is true */
+ uint flags,
+- char *str)
++ const char *str)
+ {
+ xfs_dqblk_t *d = (xfs_dqblk_t *)ddq;
+ int errs = 0;
+@@ -207,7 +207,8 @@ xfs_dquot_buf_verify_crc(
+ STATIC bool
+ xfs_dquot_buf_verify(
+ struct xfs_mount *mp,
+- struct xfs_buf *bp)
++ struct xfs_buf *bp,
++ int warn)
+ {
+ struct xfs_dqblk *d = (struct xfs_dqblk *)bp->b_addr;
+ xfs_dqid_t id = 0;
+@@ -240,8 +241,7 @@ xfs_dquot_buf_verify(
+ if (i == 0)
+ id = be32_to_cpu(ddq->d_id);
+
+- error = xfs_dqcheck(mp, ddq, id + i, 0, XFS_QMOPT_DOWARN,
+- "xfs_dquot_buf_verify");
++ error = xfs_dqcheck(mp, ddq, id + i, 0, warn, __func__);
+ if (error)
+ return false;
+ }
+@@ -256,7 +256,7 @@ xfs_dquot_buf_read_verify(
+
+ if (!xfs_dquot_buf_verify_crc(mp, bp))
+ xfs_buf_ioerror(bp, -EFSBADCRC);
+- else if (!xfs_dquot_buf_verify(mp, bp))
++ else if (!xfs_dquot_buf_verify(mp, bp, XFS_QMOPT_DOWARN))
+ xfs_buf_ioerror(bp, -EFSCORRUPTED);
+
+ if (bp->b_error)
+@@ -264,6 +264,25 @@ xfs_dquot_buf_read_verify(
+ }
+
+ /*
++ * readahead errors are silent and simply leave the buffer as !done so a real
++ * read will then be run with the xfs_dquot_buf_ops verifier. See
++ * xfs_inode_buf_verify() for why we use EIO and ~XBF_DONE here rather than
++ * reporting the failure.
++ */
++static void
++xfs_dquot_buf_readahead_verify(
++ struct xfs_buf *bp)
++{
++ struct xfs_mount *mp = bp->b_target->bt_mount;
++
++ if (!xfs_dquot_buf_verify_crc(mp, bp) ||
++ !xfs_dquot_buf_verify(mp, bp, 0)) {
++ xfs_buf_ioerror(bp, -EIO);
++ bp->b_flags &= ~XBF_DONE;
++ }
++}
++
++/*
+ * we don't calculate the CRC here as that is done when the dquot is flushed to
+ * the buffer after the update is done. This ensures that the dquot in the
+ * buffer always has an up-to-date CRC value.
+@@ -274,7 +293,7 @@ xfs_dquot_buf_write_verify(
+ {
+ struct xfs_mount *mp = bp->b_target->bt_mount;
+
+- if (!xfs_dquot_buf_verify(mp, bp)) {
++ if (!xfs_dquot_buf_verify(mp, bp, XFS_QMOPT_DOWARN)) {
+ xfs_buf_ioerror(bp, -EFSCORRUPTED);
+ xfs_verifier_error(bp);
+ return;
+@@ -286,3 +305,7 @@ const struct xfs_buf_ops xfs_dquot_buf_ops = {
+ .verify_write = xfs_dquot_buf_write_verify,
+ };
+
++const struct xfs_buf_ops xfs_dquot_buf_ra_ops = {
++ .verify_read = xfs_dquot_buf_readahead_verify,
++ .verify_write = xfs_dquot_buf_write_verify,
++};
+diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
+index 002b6b3a1988..7da6d0b2c2ed 100644
+--- a/fs/xfs/libxfs/xfs_inode_buf.c
++++ b/fs/xfs/libxfs/xfs_inode_buf.c
+@@ -63,11 +63,14 @@ xfs_inobp_check(
+ * has not had the inode cores stamped into it. Hence for readahead, the buffer
+ * may be potentially invalid.
+ *
+- * If the readahead buffer is invalid, we don't want to mark it with an error,
+- * but we do want to clear the DONE status of the buffer so that a followup read
+- * will re-read it from disk. This will ensure that we don't get an unnecessary
+- * warnings during log recovery and we don't get unnecssary panics on debug
+- * kernels.
++ * If the readahead buffer is invalid, we need to mark it with an error and
++ * clear the DONE status of the buffer so that a followup read will re-read it
++ * from disk. We don't report the error otherwise to avoid warnings during log
++ * recovery and we don't get unnecssary panics on debug kernels. We use EIO here
++ * because all we want to do is say readahead failed; there is no-one to report
++ * the error to, so this will distinguish it from a non-ra verifier failure.
++ * Changes to this readahead error behavour also need to be reflected in
++ * xfs_dquot_buf_readahead_verify().
+ */
+ static void
+ xfs_inode_buf_verify(
+@@ -95,6 +98,7 @@ xfs_inode_buf_verify(
+ XFS_RANDOM_ITOBP_INOTOBP))) {
+ if (readahead) {
+ bp->b_flags &= ~XBF_DONE;
++ xfs_buf_ioerror(bp, -EIO);
+ return;
+ }
+
+diff --git a/fs/xfs/libxfs/xfs_quota_defs.h b/fs/xfs/libxfs/xfs_quota_defs.h
+index 1b0a08379759..f51078f1e92a 100644
+--- a/fs/xfs/libxfs/xfs_quota_defs.h
++++ b/fs/xfs/libxfs/xfs_quota_defs.h
+@@ -153,7 +153,7 @@ typedef __uint16_t xfs_qwarncnt_t;
+ #define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)
+
+ extern int xfs_dqcheck(struct xfs_mount *mp, xfs_disk_dquot_t *ddq,
+- xfs_dqid_t id, uint type, uint flags, char *str);
++ xfs_dqid_t id, uint type, uint flags, const char *str);
+ extern int xfs_calc_dquots_per_chunk(unsigned int nbblks);
+
+ #endif /* __XFS_QUOTA_H__ */
+diff --git a/fs/xfs/libxfs/xfs_shared.h b/fs/xfs/libxfs/xfs_shared.h
+index 8dda4b321343..a3472a38efd2 100644
+--- a/fs/xfs/libxfs/xfs_shared.h
++++ b/fs/xfs/libxfs/xfs_shared.h
+@@ -49,6 +49,7 @@ extern const struct xfs_buf_ops xfs_inobt_buf_ops;
+ extern const struct xfs_buf_ops xfs_inode_buf_ops;
+ extern const struct xfs_buf_ops xfs_inode_buf_ra_ops;
+ extern const struct xfs_buf_ops xfs_dquot_buf_ops;
++extern const struct xfs_buf_ops xfs_dquot_buf_ra_ops;
+ extern const struct xfs_buf_ops xfs_sb_buf_ops;
+ extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops;
+ extern const struct xfs_buf_ops xfs_symlink_buf_ops;
+diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
+index 1790b00bea7a..7dd64bf98c56 100644
+--- a/fs/xfs/xfs_buf.c
++++ b/fs/xfs/xfs_buf.c
+@@ -605,6 +605,13 @@ found:
+ }
+ }
+
++ /*
++ * Clear b_error if this is a lookup from a caller that doesn't expect
++ * valid data to be found in the buffer.
++ */
++ if (!(flags & XBF_READ))
++ xfs_buf_ioerror(bp, 0);
++
+ XFS_STATS_INC(xb_get);
+ trace_xfs_buf_get(bp, flags, _RET_IP_);
+ return bp;
+@@ -1522,6 +1529,16 @@ xfs_wait_buftarg(
+ LIST_HEAD(dispose);
+ int loop = 0;
+
++ /*
++ * We need to flush the buffer workqueue to ensure that all IO
++ * completion processing is 100% done. Just waiting on buffer locks is
++ * not sufficient for async IO as the reference count held over IO is
++ * not released until after the buffer lock is dropped. Hence we need to
++ * ensure here that all reference counts have been dropped before we
++ * start walking the LRU list.
++ */
++ drain_workqueue(btp->bt_mount->m_buf_workqueue);
++
+ /* loop until there is nothing left on the lru list. */
+ while (list_lru_count(&btp->bt_lru)) {
+ list_lru_walk(&btp->bt_lru, xfs_buftarg_wait_rele,
+diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
+index a5d03396dda0..1114afdd5a6b 100644
+--- a/fs/xfs/xfs_log_recover.c
++++ b/fs/xfs/xfs_log_recover.c
+@@ -3154,6 +3154,7 @@ xlog_recover_dquot_ra_pass2(
+ struct xfs_disk_dquot *recddq;
+ struct xfs_dq_logformat *dq_f;
+ uint type;
++ int len;
+
+
+ if (mp->m_qflags == 0)
+@@ -3174,8 +3175,12 @@ xlog_recover_dquot_ra_pass2(
+ ASSERT(dq_f);
+ ASSERT(dq_f->qlf_len == 1);
+
+- xfs_buf_readahead(mp->m_ddev_targp, dq_f->qlf_blkno,
+- XFS_FSB_TO_BB(mp, dq_f->qlf_len), NULL);
++ len = XFS_FSB_TO_BB(mp, dq_f->qlf_len);
++ if (xlog_peek_buffer_cancelled(log, dq_f->qlf_blkno, len, 0))
++ return;
++
++ xfs_buf_readahead(mp->m_ddev_targp, dq_f->qlf_blkno, len,
++ &xfs_dquot_buf_ra_ops);
+ }
+
+ STATIC void
+diff --git a/include/crypto/hash.h b/include/crypto/hash.h
+index 98abda9ed3aa..bbc59bdd6395 100644
+--- a/include/crypto/hash.h
++++ b/include/crypto/hash.h
+@@ -199,6 +199,7 @@ struct crypto_ahash {
+ unsigned int keylen);
+
+ unsigned int reqsize;
++ bool has_setkey;
+ struct crypto_tfm base;
+ };
+
+@@ -356,6 +357,11 @@ static inline void *ahash_request_ctx(struct ahash_request *req)
+ int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen);
+
++static inline bool crypto_ahash_has_setkey(struct crypto_ahash *tfm)
++{
++ return tfm->has_setkey;
++}
++
+ /**
+ * crypto_ahash_finup() - update and finalize message digest
+ * @req: reference to the ahash_request handle that holds all information
+diff --git a/include/crypto/if_alg.h b/include/crypto/if_alg.h
+index 018afb264ac2..a2bfd7843f18 100644
+--- a/include/crypto/if_alg.h
++++ b/include/crypto/if_alg.h
+@@ -30,6 +30,9 @@ struct alg_sock {
+
+ struct sock *parent;
+
++ unsigned int refcnt;
++ unsigned int nokey_refcnt;
++
+ const struct af_alg_type *type;
+ void *private;
+ };
+@@ -50,9 +53,11 @@ struct af_alg_type {
+ void (*release)(void *private);
+ int (*setkey)(void *private, const u8 *key, unsigned int keylen);
+ int (*accept)(void *private, struct sock *sk);
++ int (*accept_nokey)(void *private, struct sock *sk);
+ int (*setauthsize)(void *private, unsigned int authsize);
+
+ struct proto_ops *ops;
++ struct proto_ops *ops_nokey;
+ struct module *owner;
+ char name[14];
+ };
+@@ -67,6 +72,7 @@ int af_alg_register_type(const struct af_alg_type *type);
+ int af_alg_unregister_type(const struct af_alg_type *type);
+
+ int af_alg_release(struct socket *sock);
++void af_alg_release_parent(struct sock *sk);
+ int af_alg_accept(struct sock *sk, struct socket *newsock);
+
+ int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len);
+@@ -83,11 +89,6 @@ static inline struct alg_sock *alg_sk(struct sock *sk)
+ return (struct alg_sock *)sk;
+ }
+
+-static inline void af_alg_release_parent(struct sock *sk)
+-{
+- sock_put(alg_sk(sk)->parent);
+-}
+-
+ static inline void af_alg_init_completion(struct af_alg_completion *completion)
+ {
+ init_completion(&completion->completion);
+diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h
+index 7bfb063029d8..461a0558bca4 100644
+--- a/include/drm/drm_cache.h
++++ b/include/drm/drm_cache.h
+@@ -35,4 +35,13 @@
+
+ void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
+
++static inline bool drm_arch_can_wc_memory(void)
++{
++#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
++ return false;
++#else
++ return true;
++#endif
++}
++
+ #endif
+diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
+index 54233583c6cb..ca71c03143d1 100644
+--- a/include/drm/drm_crtc.h
++++ b/include/drm/drm_crtc.h
+@@ -731,8 +731,6 @@ struct drm_connector {
+ uint8_t num_h_tile, num_v_tile;
+ uint8_t tile_h_loc, tile_v_loc;
+ uint16_t tile_h_size, tile_v_size;
+-
+- struct list_head destroy_list;
+ };
+
+ /**
+diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
+index a89f505c856b..c7f01d1aa562 100644
+--- a/include/drm/drm_dp_mst_helper.h
++++ b/include/drm/drm_dp_mst_helper.h
+@@ -449,9 +449,7 @@ struct drm_dp_mst_topology_mgr {
+ the mstb tx_slots and txmsg->state once they are queued */
+ struct mutex qlock;
+ struct list_head tx_msg_downq;
+- struct list_head tx_msg_upq;
+ bool tx_down_in_progress;
+- bool tx_up_in_progress;
+
+ /* payload info + lock for it */
+ struct mutex payload_lock;
+diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h
+index d639049a613d..553210c02ee0 100644
+--- a/include/drm/drm_fixed.h
++++ b/include/drm/drm_fixed.h
+@@ -73,18 +73,28 @@ static inline u32 dfixed_div(fixed20_12 A, fixed20_12 B)
+ #define DRM_FIXED_ONE (1ULL << DRM_FIXED_POINT)
+ #define DRM_FIXED_DECIMAL_MASK (DRM_FIXED_ONE - 1)
+ #define DRM_FIXED_DIGITS_MASK (~DRM_FIXED_DECIMAL_MASK)
++#define DRM_FIXED_EPSILON 1LL
++#define DRM_FIXED_ALMOST_ONE (DRM_FIXED_ONE - DRM_FIXED_EPSILON)
+
+ static inline s64 drm_int2fixp(int a)
+ {
+ return ((s64)a) << DRM_FIXED_POINT;
+ }
+
+-static inline int drm_fixp2int(int64_t a)
++static inline int drm_fixp2int(s64 a)
+ {
+ return ((s64)a) >> DRM_FIXED_POINT;
+ }
+
+-static inline unsigned drm_fixp_msbset(int64_t a)
++static inline int drm_fixp2int_ceil(s64 a)
++{
++ if (a > 0)
++ return drm_fixp2int(a + DRM_FIXED_ALMOST_ONE);
++ else
++ return drm_fixp2int(a - DRM_FIXED_ALMOST_ONE);
++}
++
++static inline unsigned drm_fixp_msbset(s64 a)
+ {
+ unsigned shift, sign = (a >> 63) & 1;
+
+@@ -136,6 +146,45 @@ static inline s64 drm_fixp_div(s64 a, s64 b)
+ return result;
+ }
+
++static inline s64 drm_fixp_from_fraction(s64 a, s64 b)
++{
++ s64 res;
++ bool a_neg = a < 0;
++ bool b_neg = b < 0;
++ u64 a_abs = a_neg ? -a : a;
++ u64 b_abs = b_neg ? -b : b;
++ u64 rem;
++
++ /* determine integer part */
++ u64 res_abs = div64_u64_rem(a_abs, b_abs, &rem);
++
++ /* determine fractional part */
++ {
++ u32 i = DRM_FIXED_POINT;
++
++ do {
++ rem <<= 1;
++ res_abs <<= 1;
++ if (rem >= b_abs) {
++ res_abs |= 1;
++ rem -= b_abs;
++ }
++ } while (--i != 0);
++ }
++
++ /* round up LSB */
++ {
++ u64 summand = (rem << 1) >= b_abs;
++
++ res_abs += summand;
++ }
++
++ res = (s64) res_abs;
++ if (a_neg ^ b_neg)
++ res = -res;
++ return res;
++}
++
+ static inline s64 drm_fixp_exp(s64 x)
+ {
+ s64 tolerance = div64_s64(DRM_FIXED_ONE, 1000000);
+diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
+index e15499422fdc..e91c6f15f6e8 100644
+--- a/include/linux/ceph/messenger.h
++++ b/include/linux/ceph/messenger.h
+@@ -224,6 +224,7 @@ struct ceph_connection {
+ struct ceph_entity_addr actual_peer_addr;
+
+ /* message out temps */
++ struct ceph_msg_header out_hdr;
+ struct ceph_msg *out_msg; /* sending message (== tail of
+ out_sent) */
+ bool out_msg_done;
+@@ -233,7 +234,6 @@ struct ceph_connection {
+ int out_kvec_left; /* kvec's left in out_kvec */
+ int out_skip; /* skip this many bytes */
+ int out_kvec_bytes; /* total bytes left */
+- bool out_kvec_is_msg; /* kvec refers to out_msg */
+ int out_more; /* there is more data after the kvecs */
+ __le64 out_temp_ack; /* for writing an ack */
+
+diff --git a/include/linux/console.h b/include/linux/console.h
+index 9f50fb413c11..901555a3886e 100644
+--- a/include/linux/console.h
++++ b/include/linux/console.h
+@@ -149,6 +149,7 @@ extern int console_trylock(void);
+ extern void console_unlock(void);
+ extern void console_conditional_schedule(void);
+ extern void console_unblank(void);
++extern void console_flush_on_panic(void);
+ extern struct tty_driver *console_device(int *);
+ extern void console_stop(struct console *);
+ extern void console_start(struct console *);
+diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
+index 5e1273d4de14..eda4a72a9b25 100644
+--- a/include/linux/nfs_fs_sb.h
++++ b/include/linux/nfs_fs_sb.h
+@@ -220,7 +220,7 @@ struct nfs_server {
+ #define NFS_CAP_SYMLINKS (1U << 2)
+ #define NFS_CAP_ACLS (1U << 3)
+ #define NFS_CAP_ATOMIC_OPEN (1U << 4)
+-#define NFS_CAP_CHANGE_ATTR (1U << 5)
++/* #define NFS_CAP_CHANGE_ATTR (1U << 5) */
+ #define NFS_CAP_FILEID (1U << 6)
+ #define NFS_CAP_MODE (1U << 7)
+ #define NFS_CAP_NLINK (1U << 8)
+diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
+index 33170dbd9db4..5d5174b59802 100644
+--- a/include/linux/radix-tree.h
++++ b/include/linux/radix-tree.h
+@@ -370,12 +370,28 @@ void **radix_tree_next_chunk(struct radix_tree_root *root,
+ struct radix_tree_iter *iter, unsigned flags);
+
+ /**
++ * radix_tree_iter_retry - retry this chunk of the iteration
++ * @iter: iterator state
++ *
++ * If we iterate over a tree protected only by the RCU lock, a race
++ * against deletion or creation may result in seeing a slot for which
++ * radix_tree_deref_retry() returns true. If so, call this function
++ * and continue the iteration.
++ */
++static inline __must_check
++void **radix_tree_iter_retry(struct radix_tree_iter *iter)
++{
++ iter->next_index = iter->index;
++ return NULL;
++}
++
++/**
+ * radix_tree_chunk_size - get current chunk size
+ *
+ * @iter: pointer to radix tree iterator
+ * Returns: current chunk size
+ */
+-static __always_inline unsigned
++static __always_inline long
+ radix_tree_chunk_size(struct radix_tree_iter *iter)
+ {
+ return iter->next_index - iter->index;
+@@ -409,9 +425,9 @@ radix_tree_next_slot(void **slot, struct radix_tree_iter *iter, unsigned flags)
+ return slot + offset + 1;
+ }
+ } else {
+- unsigned size = radix_tree_chunk_size(iter) - 1;
++ long size = radix_tree_chunk_size(iter);
+
+- while (size--) {
++ while (--size > 0) {
+ slot++;
+ iter->index++;
+ if (likely(*slot))
+diff --git a/include/linux/rmap.h b/include/linux/rmap.h
+index c89c53a113a8..6f48ddc4b2b5 100644
+--- a/include/linux/rmap.h
++++ b/include/linux/rmap.h
+@@ -105,20 +105,6 @@ static inline void put_anon_vma(struct anon_vma *anon_vma)
+ __put_anon_vma(anon_vma);
+ }
+
+-static inline void vma_lock_anon_vma(struct vm_area_struct *vma)
+-{
+- struct anon_vma *anon_vma = vma->anon_vma;
+- if (anon_vma)
+- down_write(&anon_vma->root->rwsem);
+-}
+-
+-static inline void vma_unlock_anon_vma(struct vm_area_struct *vma)
+-{
+- struct anon_vma *anon_vma = vma->anon_vma;
+- if (anon_vma)
+- up_write(&anon_vma->root->rwsem);
+-}
+-
+ static inline void anon_vma_lock_write(struct anon_vma *anon_vma)
+ {
+ down_write(&anon_vma->root->rwsem);
+diff --git a/include/linux/thermal.h b/include/linux/thermal.h
+index 5eac316490ea..2e7d0f7a0ecc 100644
+--- a/include/linux/thermal.h
++++ b/include/linux/thermal.h
+@@ -40,6 +40,9 @@
+ /* No upper/lower limit requirement */
+ #define THERMAL_NO_LIMIT ((u32)~0)
+
++/* use value, which < 0K, to indicate an invalid/uninitialized temperature */
++#define THERMAL_TEMP_INVALID -274000
++
+ /* Unit conversion macros */
+ #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
+ ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
+@@ -159,6 +162,7 @@ struct thermal_attr {
+ * @forced_passive: If > 0, temperature at which to switch on all ACPI
+ * processor cooling devices. Currently only used by the
+ * step-wise governor.
++ * @need_update: if equals 1, thermal_zone_device_update needs to be invoked.
+ * @ops: operations this &thermal_zone_device supports
+ * @tzp: thermal zone parameters
+ * @governor: pointer to the governor for this thermal zone
+@@ -185,6 +189,7 @@ struct thermal_zone_device {
+ int emul_temperature;
+ int passive;
+ unsigned int forced_passive;
++ atomic_t need_update;
+ struct thermal_zone_device_ops *ops;
+ const struct thermal_zone_params *tzp;
+ struct thermal_governor *governor;
+diff --git a/include/sound/rawmidi.h b/include/sound/rawmidi.h
+index f6cbef78db62..3b91ad5d5115 100644
+--- a/include/sound/rawmidi.h
++++ b/include/sound/rawmidi.h
+@@ -167,6 +167,10 @@ int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
+ int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count);
+ int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,
+ unsigned char *buffer, int count);
++int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
++ unsigned char *buffer, int count);
++int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream,
++ int count);
+
+ /* main midi functions */
+
+diff --git a/kernel/futex.c b/kernel/futex.c
+index 2579e407ff67..f3043db6d36f 100644
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -2632,6 +2632,11 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
+ if (q.pi_state && (q.pi_state->owner != current)) {
+ spin_lock(q.lock_ptr);
+ ret = fixup_pi_state_owner(uaddr2, &q, current);
++ /*
++ * Drop the reference to the pi state which
++ * the requeue_pi() code acquired for us.
++ */
++ free_pi_state(q.pi_state);
+ spin_unlock(q.lock_ptr);
+ }
+ } else {
+diff --git a/kernel/panic.c b/kernel/panic.c
+index 8136ad76e5fd..a4f7820f5930 100644
+--- a/kernel/panic.c
++++ b/kernel/panic.c
+@@ -23,6 +23,7 @@
+ #include <linux/sysrq.h>
+ #include <linux/init.h>
+ #include <linux/nmi.h>
++#include <linux/console.h>
+
+ #define PANIC_TIMER_STEP 100
+ #define PANIC_BLINK_SPD 18
+@@ -146,6 +147,17 @@ void panic(const char *fmt, ...)
+
+ bust_spinlocks(0);
+
++ /*
++ * We may have ended up stopping the CPU holding the lock (in
++ * smp_send_stop()) while still having some valuable data in the console
++ * buffer. Try to acquire the lock then release it regardless of the
++ * result. The release will also print the buffers out. Locks debug
++ * should be disabled to avoid reporting bad unlock balance when
++ * panic() is not being callled from OOPS.
++ */
++ debug_locks_off();
++ console_flush_on_panic();
++
+ if (!panic_blink)
+ panic_blink = no_blink;
+
+diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
+index bff0169e1ad8..3c1aca0c3543 100644
+--- a/kernel/printk/printk.c
++++ b/kernel/printk/printk.c
+@@ -2173,13 +2173,24 @@ void console_unlock(void)
+ static u64 seen_seq;
+ unsigned long flags;
+ bool wake_klogd = false;
+- bool retry;
++ bool do_cond_resched, retry;
+
+ if (console_suspended) {
+ up_console_sem();
+ return;
+ }
+
++ /*
++ * Console drivers are called under logbuf_lock, so
++ * @console_may_schedule should be cleared before; however, we may
++ * end up dumping a lot of lines, for example, if called from
++ * console registration path, and should invoke cond_resched()
++ * between lines if allowable. Not doing so can cause a very long
++ * scheduling stall on a slow console leading to RCU stall and
++ * softlockup warnings which exacerbate the issue with more
++ * messages practically incapacitating the system.
++ */
++ do_cond_resched = console_may_schedule;
+ console_may_schedule = 0;
+
+ /* flush buffered message fragment immediately to console */
+@@ -2241,6 +2252,9 @@ skip:
+ call_console_drivers(level, text, len);
+ start_critical_timings();
+ local_irq_restore(flags);
++
++ if (do_cond_resched)
++ cond_resched();
+ }
+ console_locked = 0;
+
+@@ -2308,6 +2322,25 @@ void console_unblank(void)
+ console_unlock();
+ }
+
++/**
++ * console_flush_on_panic - flush console content on panic
++ *
++ * Immediately output all pending messages no matter what.
++ */
++void console_flush_on_panic(void)
++{
++ /*
++ * If someone else is holding the console lock, trylock will fail
++ * and may_schedule may be set. Ignore and proceed to unlock so
++ * that messages are flushed out. As this can be called from any
++ * context and we don't want to get preempted while flushing,
++ * ensure may_schedule is cleared.
++ */
++ console_trylock();
++ console_may_schedule = 0;
++ console_unlock();
++}
++
+ /*
+ * Return the console tty driver structure and its associated index
+ */
+diff --git a/kernel/seccomp.c b/kernel/seccomp.c
+index 4f44028943e6..30c682adcdeb 100644
+--- a/kernel/seccomp.c
++++ b/kernel/seccomp.c
+@@ -317,24 +317,24 @@ static inline void seccomp_sync_threads(void)
+ put_seccomp_filter(thread);
+ smp_store_release(&thread->seccomp.filter,
+ caller->seccomp.filter);
++
++ /*
++ * Don't let an unprivileged task work around
++ * the no_new_privs restriction by creating
++ * a thread that sets it up, enters seccomp,
++ * then dies.
++ */
++ if (task_no_new_privs(caller))
++ task_set_no_new_privs(thread);
++
+ /*
+ * Opt the other thread into seccomp if needed.
+ * As threads are considered to be trust-realm
+ * equivalent (see ptrace_may_access), it is safe to
+ * allow one thread to transition the other.
+ */
+- if (thread->seccomp.mode == SECCOMP_MODE_DISABLED) {
+- /*
+- * Don't let an unprivileged task work around
+- * the no_new_privs restriction by creating
+- * a thread that sets it up, enters seccomp,
+- * then dies.
+- */
+- if (task_no_new_privs(caller))
+- task_set_no_new_privs(thread);
+-
++ if (thread->seccomp.mode == SECCOMP_MODE_DISABLED)
+ seccomp_assign_mode(thread, SECCOMP_MODE_FILTER);
+- }
+ }
+ }
+
+diff --git a/kernel/sys.c b/kernel/sys.c
+index a4e372b798a5..25ae8d2e65e2 100644
+--- a/kernel/sys.c
++++ b/kernel/sys.c
+@@ -1854,11 +1854,13 @@ static int prctl_set_mm_map(int opt, const void __user *addr, unsigned long data
+ user_auxv[AT_VECTOR_SIZE - 1] = AT_NULL;
+ }
+
+- if (prctl_map.exe_fd != (u32)-1)
++ if (prctl_map.exe_fd != (u32)-1) {
+ error = prctl_set_mm_exe_file(mm, prctl_map.exe_fd);
+- down_read(&mm->mmap_sem);
+- if (error)
+- goto out;
++ if (error)
++ return error;
++ }
++
++ down_write(&mm->mmap_sem);
+
+ /*
+ * We don't validate if these members are pointing to
+@@ -1895,10 +1897,8 @@ static int prctl_set_mm_map(int opt, const void __user *addr, unsigned long data
+ if (prctl_map.auxv_size)
+ memcpy(mm->saved_auxv, user_auxv, sizeof(user_auxv));
+
+- error = 0;
+-out:
+- up_read(&mm->mmap_sem);
+- return error;
++ up_write(&mm->mmap_sem);
++ return 0;
+ }
+ #endif /* CONFIG_CHECKPOINT_RESTORE */
+
+@@ -1930,7 +1930,7 @@ static int prctl_set_mm(int opt, unsigned long addr,
+
+ error = -EINVAL;
+
+- down_read(&mm->mmap_sem);
++ down_write(&mm->mmap_sem);
+ vma = find_vma(mm, addr);
+
+ switch (opt) {
+@@ -2033,7 +2033,7 @@ static int prctl_set_mm(int opt, unsigned long addr,
+
+ error = 0;
+ out:
+- up_read(&mm->mmap_sem);
++ up_write(&mm->mmap_sem);
+ return error;
+ }
+
+diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
+index ce033c7aa2e8..9cff0ab82b63 100644
+--- a/kernel/time/posix-clock.c
++++ b/kernel/time/posix-clock.c
+@@ -69,10 +69,10 @@ static ssize_t posix_clock_read(struct file *fp, char __user *buf,
+ static unsigned int posix_clock_poll(struct file *fp, poll_table *wait)
+ {
+ struct posix_clock *clk = get_posix_clock(fp);
+- int result = 0;
++ unsigned int result = 0;
+
+ if (!clk)
+- return -ENODEV;
++ return POLLERR;
+
+ if (clk->ops.poll)
+ result = clk->ops.poll(clk, fp, wait);
+diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
+index 414d9df94724..65dbf8aee751 100644
+--- a/kernel/time/timekeeping.c
++++ b/kernel/time/timekeeping.c
+@@ -316,8 +316,7 @@ static inline s64 timekeeping_get_ns(struct tk_read_base *tkr)
+
+ delta = timekeeping_get_delta(tkr);
+
+- nsec = delta * tkr->mult + tkr->xtime_nsec;
+- nsec >>= tkr->shift;
++ nsec = (delta * tkr->mult + tkr->xtime_nsec) >> tkr->shift;
+
+ /* If arch requires, add in get_arch_timeoffset() */
+ return nsec + arch_gettimeoffset();
+diff --git a/lib/dma-debug.c b/lib/dma-debug.c
+index dace71fe41f7..517a568f038d 100644
+--- a/lib/dma-debug.c
++++ b/lib/dma-debug.c
+@@ -1181,7 +1181,7 @@ static inline bool overlap(void *addr, unsigned long len, void *start, void *end
+
+ static void check_for_illegal_area(struct device *dev, void *addr, unsigned long len)
+ {
+- if (overlap(addr, len, _text, _etext) ||
++ if (overlap(addr, len, _stext, _etext) ||
+ overlap(addr, len, __start_rodata, __end_rodata))
+ err_printk(dev, NULL, "DMA-API: device driver maps memory from kernel text or rodata [addr=%p] [len=%lu]\n", addr, len);
+ }
+diff --git a/lib/dump_stack.c b/lib/dump_stack.c
+index 6745c6230db3..c30d07e99dba 100644
+--- a/lib/dump_stack.c
++++ b/lib/dump_stack.c
+@@ -25,6 +25,7 @@ static atomic_t dump_lock = ATOMIC_INIT(-1);
+
+ asmlinkage __visible void dump_stack(void)
+ {
++ unsigned long flags;
+ int was_locked;
+ int old;
+ int cpu;
+@@ -33,9 +34,8 @@ asmlinkage __visible void dump_stack(void)
+ * Permit this cpu to perform nested stack dumps while serialising
+ * against other CPUs
+ */
+- preempt_disable();
+-
+ retry:
++ local_irq_save(flags);
+ cpu = smp_processor_id();
+ old = atomic_cmpxchg(&dump_lock, -1, cpu);
+ if (old == -1) {
+@@ -43,6 +43,7 @@ retry:
+ } else if (old == cpu) {
+ was_locked = 1;
+ } else {
++ local_irq_restore(flags);
+ cpu_relax();
+ goto retry;
+ }
+@@ -52,7 +53,7 @@ retry:
+ if (!was_locked)
+ atomic_set(&dump_lock, -1);
+
+- preempt_enable();
++ local_irq_restore(flags);
+ }
+ #else
+ asmlinkage __visible void dump_stack(void)
+diff --git a/lib/libcrc32c.c b/lib/libcrc32c.c
+index 6a08ce7d6adc..acf9da449f81 100644
+--- a/lib/libcrc32c.c
++++ b/lib/libcrc32c.c
+@@ -74,3 +74,4 @@ module_exit(libcrc32c_mod_fini);
+ MODULE_AUTHOR("Clay Haapala <chaapala@cisco.com>");
+ MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations");
+ MODULE_LICENSE("GPL");
++MODULE_SOFTDEP("pre: crc32c");
+diff --git a/lib/radix-tree.c b/lib/radix-tree.c
+index 3d2aa27b845b..8399002aa0f0 100644
+--- a/lib/radix-tree.c
++++ b/lib/radix-tree.c
+@@ -1014,9 +1014,13 @@ radix_tree_gang_lookup(struct radix_tree_root *root, void **results,
+ return 0;
+
+ radix_tree_for_each_slot(slot, root, &iter, first_index) {
+- results[ret] = indirect_to_ptr(rcu_dereference_raw(*slot));
++ results[ret] = rcu_dereference_raw(*slot);
+ if (!results[ret])
+ continue;
++ if (radix_tree_is_indirect_ptr(results[ret])) {
++ slot = radix_tree_iter_retry(&iter);
++ continue;
++ }
+ if (++ret == max_items)
+ break;
+ }
+@@ -1093,9 +1097,13 @@ radix_tree_gang_lookup_tag(struct radix_tree_root *root, void **results,
+ return 0;
+
+ radix_tree_for_each_tagged(slot, root, &iter, first_index, tag) {
+- results[ret] = indirect_to_ptr(rcu_dereference_raw(*slot));
++ results[ret] = rcu_dereference_raw(*slot);
+ if (!results[ret])
+ continue;
++ if (radix_tree_is_indirect_ptr(results[ret])) {
++ slot = radix_tree_iter_retry(&iter);
++ continue;
++ }
+ if (++ret == max_items)
+ break;
+ }
+diff --git a/lib/string_helpers.c b/lib/string_helpers.c
+index c98ae818eb4e..33e79b5eea77 100644
+--- a/lib/string_helpers.c
++++ b/lib/string_helpers.c
+@@ -43,46 +43,73 @@ void string_get_size(u64 size, u64 blk_size, const enum string_size_units units,
+ [STRING_UNITS_10] = 1000,
+ [STRING_UNITS_2] = 1024,
+ };
+- int i, j;
+- u32 remainder = 0, sf_cap, exp;
++ static const unsigned int rounding[] = { 500, 50, 5 };
++ int i = 0, j;
++ u32 remainder = 0, sf_cap;
+ char tmp[8];
+ const char *unit;
+
+ tmp[0] = '\0';
+- i = 0;
+- if (!size)
++
++ if (blk_size == 0)
++ size = 0;
++ if (size == 0)
+ goto out;
+
+- while (blk_size >= divisor[units]) {
+- remainder = do_div(blk_size, divisor[units]);
++ /* This is Napier's algorithm. Reduce the original block size to
++ *
++ * coefficient * divisor[units]^i
++ *
++ * we do the reduction so both coefficients are just under 32 bits so
++ * that multiplying them together won't overflow 64 bits and we keep
++ * as much precision as possible in the numbers.
++ *
++ * Note: it's safe to throw away the remainders here because all the
++ * precision is in the coefficients.
++ */
++ while (blk_size >> 32) {
++ do_div(blk_size, divisor[units]);
+ i++;
+ }
+
+- exp = divisor[units] / (u32)blk_size;
+- if (size >= exp) {
+- remainder = do_div(size, divisor[units]);
+- remainder *= blk_size;
++ while (size >> 32) {
++ do_div(size, divisor[units]);
+ i++;
+- } else {
+- remainder *= size;
+ }
+
++ /* now perform the actual multiplication keeping i as the sum of the
++ * two logarithms */
+ size *= blk_size;
+- size += remainder / divisor[units];
+- remainder %= divisor[units];
+
++ /* and logarithmically reduce it until it's just under the divisor */
+ while (size >= divisor[units]) {
+ remainder = do_div(size, divisor[units]);
+ i++;
+ }
+
++ /* work out in j how many digits of precision we need from the
++ * remainder */
+ sf_cap = size;
+ for (j = 0; sf_cap*10 < 1000; j++)
+ sf_cap *= 10;
+
+- if (j) {
++ if (units == STRING_UNITS_2) {
++ /* express the remainder as a decimal. It's currently the
++ * numerator of a fraction whose denominator is
++ * divisor[units], which is 1 << 10 for STRING_UNITS_2 */
+ remainder *= 1000;
+- remainder /= divisor[units];
++ remainder >>= 10;
++ }
++
++ /* add a 5 to the digit below what will be printed to ensure
++ * an arithmetical round up and carry it through to size */
++ remainder += rounding[j];
++ if (remainder >= 1000) {
++ remainder -= 1000;
++ size += 1;
++ }
++
++ if (j) {
+ snprintf(tmp, sizeof(tmp), ".%03u", remainder);
+ tmp[j+1] = '\0';
+ }
+diff --git a/mm/balloon_compaction.c b/mm/balloon_compaction.c
+index fcad8322ef36..b640609bcd17 100644
+--- a/mm/balloon_compaction.c
++++ b/mm/balloon_compaction.c
+@@ -61,6 +61,7 @@ struct page *balloon_page_dequeue(struct balloon_dev_info *b_dev_info)
+ bool dequeued_page;
+
+ dequeued_page = false;
++ spin_lock_irqsave(&b_dev_info->pages_lock, flags);
+ list_for_each_entry_safe(page, tmp, &b_dev_info->pages, lru) {
+ /*
+ * Block others from accessing the 'page' while we get around
+@@ -75,15 +76,14 @@ struct page *balloon_page_dequeue(struct balloon_dev_info *b_dev_info)
+ continue;
+ }
+ #endif
+- spin_lock_irqsave(&b_dev_info->pages_lock, flags);
+ balloon_page_delete(page);
+ __count_vm_event(BALLOON_DEFLATE);
+- spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
+ unlock_page(page);
+ dequeued_page = true;
+ break;
+ }
+ }
++ spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
+
+ if (!dequeued_page) {
+ /*
+diff --git a/mm/memcontrol.c b/mm/memcontrol.c
+index 68dea90334cb..aac1c98a9bc7 100644
+--- a/mm/memcontrol.c
++++ b/mm/memcontrol.c
+@@ -3824,16 +3824,17 @@ static void __mem_cgroup_usage_unregister_event(struct mem_cgroup *memcg,
+ swap_buffers:
+ /* Swap primary and spare array */
+ thresholds->spare = thresholds->primary;
+- /* If all events are unregistered, free the spare array */
+- if (!new) {
+- kfree(thresholds->spare);
+- thresholds->spare = NULL;
+- }
+
+ rcu_assign_pointer(thresholds->primary, new);
+
+ /* To be sure that nobody uses thresholds */
+ synchronize_rcu();
++
++ /* If all events are unregistered, free the spare array */
++ if (!new) {
++ kfree(thresholds->spare);
++ thresholds->spare = NULL;
++ }
+ unlock:
+ mutex_unlock(&memcg->thresholds_lock);
+ }
+diff --git a/mm/memory-failure.c b/mm/memory-failure.c
+index 9f48145c884f..e26bc59d7dff 100644
+--- a/mm/memory-failure.c
++++ b/mm/memory-failure.c
+@@ -1557,7 +1557,7 @@ static int get_any_page(struct page *page, unsigned long pfn, int flags)
+ * Did it turn free?
+ */
+ ret = __get_any_page(page, pfn, 0);
+- if (!PageLRU(page)) {
++ if (ret == 1 && !PageLRU(page)) {
+ /* Drop page reference which is from __get_any_page() */
+ put_page(page);
+ pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n",
+diff --git a/mm/mlock.c b/mm/mlock.c
+index 6fd2cf15e868..3d3ee6cad776 100644
+--- a/mm/mlock.c
++++ b/mm/mlock.c
+@@ -172,7 +172,7 @@ static void __munlock_isolation_failed(struct page *page)
+ */
+ unsigned int munlock_vma_page(struct page *page)
+ {
+- unsigned int nr_pages;
++ int nr_pages;
+ struct zone *zone = page_zone(page);
+
+ /* For try_to_munlock() and to serialize with page migration */
+diff --git a/mm/mmap.c b/mm/mmap.c
+index bb50cacc3ea5..b639fa2721d8 100644
+--- a/mm/mmap.c
++++ b/mm/mmap.c
+@@ -440,12 +440,16 @@ static void validate_mm(struct mm_struct *mm)
+ struct vm_area_struct *vma = mm->mmap;
+
+ while (vma) {
++ struct anon_vma *anon_vma = vma->anon_vma;
+ struct anon_vma_chain *avc;
+
+- vma_lock_anon_vma(vma);
+- list_for_each_entry(avc, &vma->anon_vma_chain, same_vma)
+- anon_vma_interval_tree_verify(avc);
+- vma_unlock_anon_vma(vma);
++ if (anon_vma) {
++ anon_vma_lock_read(anon_vma);
++ list_for_each_entry(avc, &vma->anon_vma_chain, same_vma)
++ anon_vma_interval_tree_verify(avc);
++ anon_vma_unlock_read(anon_vma);
++ }
++
+ highest_address = vma->vm_end;
+ vma = vma->vm_next;
+ i++;
+@@ -2141,32 +2145,27 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns
+ */
+ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
+ {
+- int error;
++ int error = 0;
+
+ if (!(vma->vm_flags & VM_GROWSUP))
+ return -EFAULT;
+
+- /*
+- * We must make sure the anon_vma is allocated
+- * so that the anon_vma locking is not a noop.
+- */
++ /* Guard against wrapping around to address 0. */
++ if (address < PAGE_ALIGN(address+4))
++ address = PAGE_ALIGN(address+4);
++ else
++ return -ENOMEM;
++
++ /* We must make sure the anon_vma is allocated. */
+ if (unlikely(anon_vma_prepare(vma)))
+ return -ENOMEM;
+- vma_lock_anon_vma(vma);
+
+ /*
+ * vma->vm_start/vm_end cannot change under us because the caller
+ * is required to hold the mmap_sem in read mode. We need the
+ * anon_vma lock to serialize against concurrent expand_stacks.
+- * Also guard against wrapping around to address 0.
+ */
+- if (address < PAGE_ALIGN(address+4))
+- address = PAGE_ALIGN(address+4);
+- else {
+- vma_unlock_anon_vma(vma);
+- return -ENOMEM;
+- }
+- error = 0;
++ anon_vma_lock_write(vma->anon_vma);
+
+ /* Somebody else might have raced and expanded it already */
+ if (address > vma->vm_end) {
+@@ -2184,7 +2183,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
+ * updates, but we only hold a shared mmap_sem
+ * lock here, so we need to protect against
+ * concurrent vma expansions.
+- * vma_lock_anon_vma() doesn't help here, as
++ * anon_vma_lock_write() doesn't help here, as
+ * we don't guarantee that all growable vmas
+ * in a mm share the same root anon vma.
+ * So, we reuse mm->page_table_lock to guard
+@@ -2204,7 +2203,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
+ }
+ }
+ }
+- vma_unlock_anon_vma(vma);
++ anon_vma_unlock_write(vma->anon_vma);
+ khugepaged_enter_vma_merge(vma, vma->vm_flags);
+ validate_mm(vma->vm_mm);
+ return error;
+@@ -2219,25 +2218,21 @@ int expand_downwards(struct vm_area_struct *vma,
+ {
+ int error;
+
+- /*
+- * We must make sure the anon_vma is allocated
+- * so that the anon_vma locking is not a noop.
+- */
+- if (unlikely(anon_vma_prepare(vma)))
+- return -ENOMEM;
+-
+ address &= PAGE_MASK;
+ error = security_mmap_addr(address);
+ if (error)
+ return error;
+
+- vma_lock_anon_vma(vma);
++ /* We must make sure the anon_vma is allocated. */
++ if (unlikely(anon_vma_prepare(vma)))
++ return -ENOMEM;
+
+ /*
+ * vma->vm_start/vm_end cannot change under us because the caller
+ * is required to hold the mmap_sem in read mode. We need the
+ * anon_vma lock to serialize against concurrent expand_stacks.
+ */
++ anon_vma_lock_write(vma->anon_vma);
+
+ /* Somebody else might have raced and expanded it already */
+ if (address < vma->vm_start) {
+@@ -2255,7 +2250,7 @@ int expand_downwards(struct vm_area_struct *vma,
+ * updates, but we only hold a shared mmap_sem
+ * lock here, so we need to protect against
+ * concurrent vma expansions.
+- * vma_lock_anon_vma() doesn't help here, as
++ * anon_vma_lock_write() doesn't help here, as
+ * we don't guarantee that all growable vmas
+ * in a mm share the same root anon vma.
+ * So, we reuse mm->page_table_lock to guard
+@@ -2273,7 +2268,7 @@ int expand_downwards(struct vm_area_struct *vma,
+ }
+ }
+ }
+- vma_unlock_anon_vma(vma);
++ anon_vma_unlock_write(vma->anon_vma);
+ khugepaged_enter_vma_merge(vma, vma->vm_flags);
+ validate_mm(vma->vm_mm);
+ return error;
+diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
+index a8b5e749e84e..fb1ec10ce449 100644
+--- a/mm/zsmalloc.c
++++ b/mm/zsmalloc.c
+@@ -306,7 +306,12 @@ static void free_handle(struct zs_pool *pool, unsigned long handle)
+
+ static void record_obj(unsigned long handle, unsigned long obj)
+ {
+- *(unsigned long *)handle = obj;
++ /*
++ * lsb of @obj represents handle lock while other bits
++ * represent object value the handle is pointing so
++ * updating shouldn't do store tearing.
++ */
++ WRITE_ONCE(*(unsigned long *)handle, obj);
+ }
+
+ /* zpool driver */
+@@ -1641,6 +1646,13 @@ static int migrate_zspage(struct zs_pool *pool, struct size_class *class,
+ free_obj = obj_malloc(d_page, class, handle);
+ zs_object_copy(used_obj, free_obj, class);
+ index++;
++ /*
++ * record_obj updates handle's value to free_obj and it will
++ * invalidate lock bit(ie, HANDLE_PIN_BIT) of handle, which
++ * breaks synchronization using pin_tag(e,g, zs_free) so
++ * let's keep the lock bit.
++ */
++ free_obj |= BIT(HANDLE_PIN_BIT);
+ record_obj(handle, free_obj);
+ unpin_tag(handle);
+ obj_free(pool, class, used_obj);
+diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
+index 967080a9f043..e51af69c61bf 100644
+--- a/net/ceph/messenger.c
++++ b/net/ceph/messenger.c
+@@ -675,6 +675,8 @@ static void reset_connection(struct ceph_connection *con)
+ }
+ con->in_seq = 0;
+ con->in_seq_acked = 0;
++
++ con->out_skip = 0;
+ }
+
+ /*
+@@ -774,6 +776,8 @@ static u32 get_global_seq(struct ceph_messenger *msgr, u32 gt)
+
+ static void con_out_kvec_reset(struct ceph_connection *con)
+ {
++ BUG_ON(con->out_skip);
++
+ con->out_kvec_left = 0;
+ con->out_kvec_bytes = 0;
+ con->out_kvec_cur = &con->out_kvec[0];
+@@ -782,9 +786,9 @@ static void con_out_kvec_reset(struct ceph_connection *con)
+ static void con_out_kvec_add(struct ceph_connection *con,
+ size_t size, void *data)
+ {
+- int index;
++ int index = con->out_kvec_left;
+
+- index = con->out_kvec_left;
++ BUG_ON(con->out_skip);
+ BUG_ON(index >= ARRAY_SIZE(con->out_kvec));
+
+ con->out_kvec[index].iov_len = size;
+@@ -793,6 +797,27 @@ static void con_out_kvec_add(struct ceph_connection *con,
+ con->out_kvec_bytes += size;
+ }
+
++/*
++ * Chop off a kvec from the end. Return residual number of bytes for
++ * that kvec, i.e. how many bytes would have been written if the kvec
++ * hadn't been nuked.
++ */
++static int con_out_kvec_skip(struct ceph_connection *con)
++{
++ int off = con->out_kvec_cur - con->out_kvec;
++ int skip = 0;
++
++ if (con->out_kvec_bytes > 0) {
++ skip = con->out_kvec[off + con->out_kvec_left - 1].iov_len;
++ BUG_ON(con->out_kvec_bytes < skip);
++ BUG_ON(!con->out_kvec_left);
++ con->out_kvec_bytes -= skip;
++ con->out_kvec_left--;
++ }
++
++ return skip;
++}
++
+ #ifdef CONFIG_BLOCK
+
+ /*
+@@ -1200,7 +1225,6 @@ static void prepare_write_message_footer(struct ceph_connection *con)
+ m->footer.flags |= CEPH_MSG_FOOTER_COMPLETE;
+
+ dout("prepare_write_message_footer %p\n", con);
+- con->out_kvec_is_msg = true;
+ con->out_kvec[v].iov_base = &m->footer;
+ if (con->peer_features & CEPH_FEATURE_MSG_AUTH) {
+ if (con->ops->sign_message)
+@@ -1228,7 +1252,6 @@ static void prepare_write_message(struct ceph_connection *con)
+ u32 crc;
+
+ con_out_kvec_reset(con);
+- con->out_kvec_is_msg = true;
+ con->out_msg_done = false;
+
+ /* Sneak an ack in there first? If we can get it into the same
+@@ -1268,18 +1291,19 @@ static void prepare_write_message(struct ceph_connection *con)
+
+ /* tag + hdr + front + middle */
+ con_out_kvec_add(con, sizeof (tag_msg), &tag_msg);
+- con_out_kvec_add(con, sizeof (m->hdr), &m->hdr);
++ con_out_kvec_add(con, sizeof(con->out_hdr), &con->out_hdr);
+ con_out_kvec_add(con, m->front.iov_len, m->front.iov_base);
+
+ if (m->middle)
+ con_out_kvec_add(con, m->middle->vec.iov_len,
+ m->middle->vec.iov_base);
+
+- /* fill in crc (except data pages), footer */
++ /* fill in hdr crc and finalize hdr */
+ crc = crc32c(0, &m->hdr, offsetof(struct ceph_msg_header, crc));
+ con->out_msg->hdr.crc = cpu_to_le32(crc);
+- con->out_msg->footer.flags = 0;
++ memcpy(&con->out_hdr, &con->out_msg->hdr, sizeof(con->out_hdr));
+
++ /* fill in front and middle crc, footer */
+ crc = crc32c(0, m->front.iov_base, m->front.iov_len);
+ con->out_msg->footer.front_crc = cpu_to_le32(crc);
+ if (m->middle) {
+@@ -1291,6 +1315,7 @@ static void prepare_write_message(struct ceph_connection *con)
+ dout("%s front_crc %u middle_crc %u\n", __func__,
+ le32_to_cpu(con->out_msg->footer.front_crc),
+ le32_to_cpu(con->out_msg->footer.middle_crc));
++ con->out_msg->footer.flags = 0;
+
+ /* is there a data payload? */
+ con->out_msg->footer.data_crc = 0;
+@@ -1485,7 +1510,6 @@ static int write_partial_kvec(struct ceph_connection *con)
+ }
+ }
+ con->out_kvec_left = 0;
+- con->out_kvec_is_msg = false;
+ ret = 1;
+ out:
+ dout("write_partial_kvec %p %d left in %d kvecs ret = %d\n", con,
+@@ -1577,6 +1601,7 @@ static int write_partial_skip(struct ceph_connection *con)
+ {
+ int ret;
+
++ dout("%s %p %d left\n", __func__, con, con->out_skip);
+ while (con->out_skip > 0) {
+ size_t size = min(con->out_skip, (int) PAGE_CACHE_SIZE);
+
+@@ -2493,13 +2518,13 @@ more:
+
+ more_kvec:
+ /* kvec data queued? */
+- if (con->out_skip) {
+- ret = write_partial_skip(con);
++ if (con->out_kvec_left) {
++ ret = write_partial_kvec(con);
+ if (ret <= 0)
+ goto out;
+ }
+- if (con->out_kvec_left) {
+- ret = write_partial_kvec(con);
++ if (con->out_skip) {
++ ret = write_partial_skip(con);
+ if (ret <= 0)
+ goto out;
+ }
+@@ -3026,16 +3051,31 @@ void ceph_msg_revoke(struct ceph_msg *msg)
+ ceph_msg_put(msg);
+ }
+ if (con->out_msg == msg) {
+- dout("%s %p msg %p - was sending\n", __func__, con, msg);
+- con->out_msg = NULL;
+- if (con->out_kvec_is_msg) {
+- con->out_skip = con->out_kvec_bytes;
+- con->out_kvec_is_msg = false;
++ BUG_ON(con->out_skip);
++ /* footer */
++ if (con->out_msg_done) {
++ con->out_skip += con_out_kvec_skip(con);
++ } else {
++ BUG_ON(!msg->data_length);
++ if (con->peer_features & CEPH_FEATURE_MSG_AUTH)
++ con->out_skip += sizeof(msg->footer);
++ else
++ con->out_skip += sizeof(msg->old_footer);
+ }
++ /* data, middle, front */
++ if (msg->data_length)
++ con->out_skip += msg->cursor.total_resid;
++ if (msg->middle)
++ con->out_skip += con_out_kvec_skip(con);
++ con->out_skip += con_out_kvec_skip(con);
++
++ dout("%s %p msg %p - was sending, will write %d skip %d\n",
++ __func__, con, msg, con->out_kvec_bytes, con->out_skip);
+ msg->hdr.seq = 0;
+-
++ con->out_msg = NULL;
+ ceph_msg_put(msg);
+ }
++
+ mutex_unlock(&con->mutex);
+ }
+
+diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
+index a9c9d961f039..41adfc898a18 100644
+--- a/net/mac80211/ibss.c
++++ b/net/mac80211/ibss.c
+@@ -1727,7 +1727,6 @@ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local)
+ if (sdata->vif.type != NL80211_IFTYPE_ADHOC)
+ continue;
+ sdata->u.ibss.last_scan_completed = jiffies;
+- ieee80211_queue_work(&local->hw, &sdata->work);
+ }
+ mutex_unlock(&local->iflist_mtx);
+ }
+diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
+index 817098add1d6..afcc67a157fd 100644
+--- a/net/mac80211/mesh.c
++++ b/net/mac80211/mesh.c
+@@ -1299,17 +1299,6 @@ out:
+ sdata_unlock(sdata);
+ }
+
+-void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
+-{
+- struct ieee80211_sub_if_data *sdata;
+-
+- rcu_read_lock();
+- list_for_each_entry_rcu(sdata, &local->interfaces, list)
+- if (ieee80211_vif_is_mesh(&sdata->vif) &&
+- ieee80211_sdata_running(sdata))
+- ieee80211_queue_work(&local->hw, &sdata->work);
+- rcu_read_unlock();
+-}
+
+ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
+ {
+diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
+index 50c8473cf9dc..472bdc73e950 100644
+--- a/net/mac80211/mesh.h
++++ b/net/mac80211/mesh.h
+@@ -358,14 +358,10 @@ static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
+ return sdata->u.mesh.mesh_pp_id == IEEE80211_PATH_PROTOCOL_HWMP;
+ }
+
+-void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local);
+-
+ void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
+ void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata);
+ void ieee80211s_stop(void);
+ #else
+-static inline void
+-ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) {}
+ static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
+ { return false; }
+ static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
+diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
+index a93906103f8b..844825829992 100644
+--- a/net/mac80211/mlme.c
++++ b/net/mac80211/mlme.c
+@@ -4002,8 +4002,6 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
+ if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
+ ieee80211_queue_work(&sdata->local->hw,
+ &sdata->u.mgd.monitor_work);
+- /* and do all the other regular work too */
+- ieee80211_queue_work(&sdata->local->hw, &sdata->work);
+ }
+ }
+
+diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
+index 7bb6a9383f58..ee9351affa5b 100644
+--- a/net/mac80211/scan.c
++++ b/net/mac80211/scan.c
+@@ -310,6 +310,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
+ bool was_scanning = local->scanning;
+ struct cfg80211_scan_request *scan_req;
+ struct ieee80211_sub_if_data *scan_sdata;
++ struct ieee80211_sub_if_data *sdata;
+
+ lockdep_assert_held(&local->mtx);
+
+@@ -369,7 +370,16 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
+
+ ieee80211_mlme_notify_scan_completed(local);
+ ieee80211_ibss_notify_scan_completed(local);
+- ieee80211_mesh_notify_scan_completed(local);
++
++ /* Requeue all the work that might have been ignored while
++ * the scan was in progress; if there was none this will
++ * just be a no-op for the particular interface.
++ */
++ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
++ if (ieee80211_sdata_running(sdata))
++ ieee80211_queue_work(&sdata->local->hw, &sdata->work);
++ }
++
+ if (was_scanning)
+ ieee80211_start_next_roc(local);
+ }
+diff --git a/net/rfkill/core.c b/net/rfkill/core.c
+index fa7cd792791c..a97bb7332607 100644
+--- a/net/rfkill/core.c
++++ b/net/rfkill/core.c
+@@ -1081,17 +1081,6 @@ static unsigned int rfkill_fop_poll(struct file *file, poll_table *wait)
+ return res;
+ }
+
+-static bool rfkill_readable(struct rfkill_data *data)
+-{
+- bool r;
+-
+- mutex_lock(&data->mtx);
+- r = !list_empty(&data->events);
+- mutex_unlock(&data->mtx);
+-
+- return r;
+-}
+-
+ static ssize_t rfkill_fop_read(struct file *file, char __user *buf,
+ size_t count, loff_t *pos)
+ {
+@@ -1108,8 +1097,11 @@ static ssize_t rfkill_fop_read(struct file *file, char __user *buf,
+ goto out;
+ }
+ mutex_unlock(&data->mtx);
++ /* since we re-check and it just compares pointers,
++ * using !list_empty() without locking isn't a problem
++ */
+ ret = wait_event_interruptible(data->read_wait,
+- rfkill_readable(data));
++ !list_empty(&data->events));
+ mutex_lock(&data->mtx);
+
+ if (ret)
+diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
+index 23e78dcd12bf..38b64f487315 100755
+--- a/scripts/bloat-o-meter
++++ b/scripts/bloat-o-meter
+@@ -58,8 +58,8 @@ for name in common:
+ delta.sort()
+ delta.reverse()
+
+-print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
+- (add, remove, grow, shrink, up, -down, up-down)
+-print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")
++print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
++ (add, remove, grow, shrink, up, -down, up-down))
++print("%-40s %7s %7s %+7s" % ("function", "old", "new", "delta"))
+ for d, n in delta:
+- if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)
++ if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
+diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
+index b123c42e7dc8..b554d7f9e3be 100644
+--- a/sound/core/compress_offload.c
++++ b/sound/core/compress_offload.c
+@@ -44,6 +44,13 @@
+ #include <sound/compress_offload.h>
+ #include <sound/compress_driver.h>
+
++/* struct snd_compr_codec_caps overflows the ioctl bit size for some
++ * architectures, so we need to disable the relevant ioctls.
++ */
++#if _IOC_SIZEBITS < 14
++#define COMPR_CODEC_CAPS_OVERFLOW
++#endif
++
+ /* TODO:
+ * - add substream support for multiple devices in case of
+ * SND_DYNAMIC_MINORS is not used
+@@ -438,6 +445,7 @@ out:
+ return retval;
+ }
+
++#ifndef COMPR_CODEC_CAPS_OVERFLOW
+ static int
+ snd_compr_get_codec_caps(struct snd_compr_stream *stream, unsigned long arg)
+ {
+@@ -461,6 +469,7 @@ out:
+ kfree(caps);
+ return retval;
+ }
++#endif /* !COMPR_CODEC_CAPS_OVERFLOW */
+
+ /* revisit this with snd_pcm_preallocate_xxx */
+ static int snd_compr_allocate_buffer(struct snd_compr_stream *stream,
+@@ -799,9 +808,11 @@ static long snd_compr_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
+ case _IOC_NR(SNDRV_COMPRESS_GET_CAPS):
+ retval = snd_compr_get_caps(stream, arg);
+ break;
++#ifndef COMPR_CODEC_CAPS_OVERFLOW
+ case _IOC_NR(SNDRV_COMPRESS_GET_CODEC_CAPS):
+ retval = snd_compr_get_codec_caps(stream, arg);
+ break;
++#endif
+ case _IOC_NR(SNDRV_COMPRESS_SET_PARAMS):
+ retval = snd_compr_set_params(stream, arg);
+ break;
+diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
+index 58550cc93f28..33e72c809e50 100644
+--- a/sound/core/oss/pcm_oss.c
++++ b/sound/core/oss/pcm_oss.c
+@@ -834,7 +834,8 @@ static int choose_rate(struct snd_pcm_substream *substream,
+ return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
+ }
+
+-static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
++static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
++ bool trylock)
+ {
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_pcm_hw_params *params, *sparams;
+@@ -848,7 +849,10 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
+ struct snd_mask sformat_mask;
+ struct snd_mask mask;
+
+- if (mutex_lock_interruptible(&runtime->oss.params_lock))
++ if (trylock) {
++ if (!(mutex_trylock(&runtime->oss.params_lock)))
++ return -EAGAIN;
++ } else if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -EINTR;
+ sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
+ params = kmalloc(sizeof(*params), GFP_KERNEL);
+@@ -1092,7 +1096,7 @@ static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_fil
+ if (asubstream == NULL)
+ asubstream = substream;
+ if (substream->runtime->oss.params) {
+- err = snd_pcm_oss_change_params(substream);
++ err = snd_pcm_oss_change_params(substream, false);
+ if (err < 0)
+ return err;
+ }
+@@ -1132,7 +1136,7 @@ static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
+ return 0;
+ runtime = substream->runtime;
+ if (runtime->oss.params) {
+- err = snd_pcm_oss_change_params(substream);
++ err = snd_pcm_oss_change_params(substream, false);
+ if (err < 0)
+ return err;
+ }
+@@ -2163,7 +2167,7 @@ static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stre
+ runtime = substream->runtime;
+
+ if (runtime->oss.params &&
+- (err = snd_pcm_oss_change_params(substream)) < 0)
++ (err = snd_pcm_oss_change_params(substream, false)) < 0)
+ return err;
+
+ info.fragsize = runtime->oss.period_bytes;
+@@ -2800,7 +2804,12 @@ static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
+ return -EIO;
+
+ if (runtime->oss.params) {
+- if ((err = snd_pcm_oss_change_params(substream)) < 0)
++ /* use mutex_trylock() for params_lock for avoiding a deadlock
++ * between mmap_sem and params_lock taken by
++ * copy_from/to_user() in snd_pcm_oss_write/read()
++ */
++ err = snd_pcm_oss_change_params(substream, true);
++ if (err < 0)
+ return err;
+ }
+ #ifdef CONFIG_SND_PCM_OSS_PLUGINS
+diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
+index a7759846fbaa..795437b10082 100644
+--- a/sound/core/rawmidi.c
++++ b/sound/core/rawmidi.c
+@@ -942,31 +942,36 @@ static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream,
+ unsigned long flags;
+ long result = 0, count1;
+ struct snd_rawmidi_runtime *runtime = substream->runtime;
++ unsigned long appl_ptr;
+
++ spin_lock_irqsave(&runtime->lock, flags);
+ while (count > 0 && runtime->avail) {
+ count1 = runtime->buffer_size - runtime->appl_ptr;
+ if (count1 > count)
+ count1 = count;
+- spin_lock_irqsave(&runtime->lock, flags);
+ if (count1 > (int)runtime->avail)
+ count1 = runtime->avail;
++
++ /* update runtime->appl_ptr before unlocking for userbuf */
++ appl_ptr = runtime->appl_ptr;
++ runtime->appl_ptr += count1;
++ runtime->appl_ptr %= runtime->buffer_size;
++ runtime->avail -= count1;
++
+ if (kernelbuf)
+- memcpy(kernelbuf + result, runtime->buffer + runtime->appl_ptr, count1);
++ memcpy(kernelbuf + result, runtime->buffer + appl_ptr, count1);
+ if (userbuf) {
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ if (copy_to_user(userbuf + result,
+- runtime->buffer + runtime->appl_ptr, count1)) {
++ runtime->buffer + appl_ptr, count1)) {
+ return result > 0 ? result : -EFAULT;
+ }
+ spin_lock_irqsave(&runtime->lock, flags);
+ }
+- runtime->appl_ptr += count1;
+- runtime->appl_ptr %= runtime->buffer_size;
+- runtime->avail -= count1;
+- spin_unlock_irqrestore(&runtime->lock, flags);
+ result += count1;
+ count -= count1;
+ }
++ spin_unlock_irqrestore(&runtime->lock, flags);
+ return result;
+ }
+
+@@ -1055,23 +1060,16 @@ int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream)
+ EXPORT_SYMBOL(snd_rawmidi_transmit_empty);
+
+ /**
+- * snd_rawmidi_transmit_peek - copy data from the internal buffer
++ * __snd_rawmidi_transmit_peek - copy data from the internal buffer
+ * @substream: the rawmidi substream
+ * @buffer: the buffer pointer
+ * @count: data size to transfer
+ *
+- * Copies data from the internal output buffer to the given buffer.
+- *
+- * Call this in the interrupt handler when the midi output is ready,
+- * and call snd_rawmidi_transmit_ack() after the transmission is
+- * finished.
+- *
+- * Return: The size of copied data, or a negative error code on failure.
++ * This is a variant of snd_rawmidi_transmit_peek() without spinlock.
+ */
+-int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
++int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
+ unsigned char *buffer, int count)
+ {
+- unsigned long flags;
+ int result, count1;
+ struct snd_rawmidi_runtime *runtime = substream->runtime;
+
+@@ -1081,7 +1079,6 @@ int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
+ return -EINVAL;
+ }
+ result = 0;
+- spin_lock_irqsave(&runtime->lock, flags);
+ if (runtime->avail >= runtime->buffer_size) {
+ /* warning: lowlevel layer MUST trigger down the hardware */
+ goto __skip;
+@@ -1106,25 +1103,47 @@ int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
+ }
+ }
+ __skip:
++ return result;
++}
++EXPORT_SYMBOL(__snd_rawmidi_transmit_peek);
++
++/**
++ * snd_rawmidi_transmit_peek - copy data from the internal buffer
++ * @substream: the rawmidi substream
++ * @buffer: the buffer pointer
++ * @count: data size to transfer
++ *
++ * Copies data from the internal output buffer to the given buffer.
++ *
++ * Call this in the interrupt handler when the midi output is ready,
++ * and call snd_rawmidi_transmit_ack() after the transmission is
++ * finished.
++ *
++ * Return: The size of copied data, or a negative error code on failure.
++ */
++int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
++ unsigned char *buffer, int count)
++{
++ struct snd_rawmidi_runtime *runtime = substream->runtime;
++ int result;
++ unsigned long flags;
++
++ spin_lock_irqsave(&runtime->lock, flags);
++ result = __snd_rawmidi_transmit_peek(substream, buffer, count);
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ return result;
+ }
+ EXPORT_SYMBOL(snd_rawmidi_transmit_peek);
+
+ /**
+- * snd_rawmidi_transmit_ack - acknowledge the transmission
++ * __snd_rawmidi_transmit_ack - acknowledge the transmission
+ * @substream: the rawmidi substream
+ * @count: the transferred count
+ *
+- * Advances the hardware pointer for the internal output buffer with
+- * the given size and updates the condition.
+- * Call after the transmission is finished.
+- *
+- * Return: The advanced size if successful, or a negative error code on failure.
++ * This is a variant of __snd_rawmidi_transmit_ack() without spinlock.
+ */
+-int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
++int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
+ {
+- unsigned long flags;
+ struct snd_rawmidi_runtime *runtime = substream->runtime;
+
+ if (runtime->buffer == NULL) {
+@@ -1132,7 +1151,6 @@ int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
+ "snd_rawmidi_transmit_ack: output is not active!!!\n");
+ return -EINVAL;
+ }
+- spin_lock_irqsave(&runtime->lock, flags);
+ snd_BUG_ON(runtime->avail + count > runtime->buffer_size);
+ runtime->hw_ptr += count;
+ runtime->hw_ptr %= runtime->buffer_size;
+@@ -1142,9 +1160,32 @@ int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
+ if (runtime->drain || snd_rawmidi_ready(substream))
+ wake_up(&runtime->sleep);
+ }
+- spin_unlock_irqrestore(&runtime->lock, flags);
+ return count;
+ }
++EXPORT_SYMBOL(__snd_rawmidi_transmit_ack);
++
++/**
++ * snd_rawmidi_transmit_ack - acknowledge the transmission
++ * @substream: the rawmidi substream
++ * @count: the transferred count
++ *
++ * Advances the hardware pointer for the internal output buffer with
++ * the given size and updates the condition.
++ * Call after the transmission is finished.
++ *
++ * Return: The advanced size if successful, or a negative error code on failure.
++ */
++int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
++{
++ struct snd_rawmidi_runtime *runtime = substream->runtime;
++ int result;
++ unsigned long flags;
++
++ spin_lock_irqsave(&runtime->lock, flags);
++ result = __snd_rawmidi_transmit_ack(substream, count);
++ spin_unlock_irqrestore(&runtime->lock, flags);
++ return result;
++}
+ EXPORT_SYMBOL(snd_rawmidi_transmit_ack);
+
+ /**
+@@ -1160,12 +1201,22 @@ EXPORT_SYMBOL(snd_rawmidi_transmit_ack);
+ int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,
+ unsigned char *buffer, int count)
+ {
++ struct snd_rawmidi_runtime *runtime = substream->runtime;
++ int result;
++ unsigned long flags;
++
++ spin_lock_irqsave(&runtime->lock, flags);
+ if (!substream->opened)
+- return -EBADFD;
+- count = snd_rawmidi_transmit_peek(substream, buffer, count);
+- if (count < 0)
+- return count;
+- return snd_rawmidi_transmit_ack(substream, count);
++ result = -EBADFD;
++ else {
++ count = __snd_rawmidi_transmit_peek(substream, buffer, count);
++ if (count <= 0)
++ result = count;
++ else
++ result = __snd_rawmidi_transmit_ack(substream, count);
++ }
++ spin_unlock_irqrestore(&runtime->lock, flags);
++ return result;
+ }
+ EXPORT_SYMBOL(snd_rawmidi_transmit);
+
+@@ -1177,8 +1228,9 @@ static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,
+ unsigned long flags;
+ long count1, result;
+ struct snd_rawmidi_runtime *runtime = substream->runtime;
++ unsigned long appl_ptr;
+
+- if (snd_BUG_ON(!kernelbuf && !userbuf))
++ if (!kernelbuf && !userbuf)
+ return -EINVAL;
+ if (snd_BUG_ON(!runtime->buffer))
+ return -EINVAL;
+@@ -1197,12 +1249,19 @@ static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,
+ count1 = count;
+ if (count1 > (long)runtime->avail)
+ count1 = runtime->avail;
++
++ /* update runtime->appl_ptr before unlocking for userbuf */
++ appl_ptr = runtime->appl_ptr;
++ runtime->appl_ptr += count1;
++ runtime->appl_ptr %= runtime->buffer_size;
++ runtime->avail -= count1;
++
+ if (kernelbuf)
+- memcpy(runtime->buffer + runtime->appl_ptr,
++ memcpy(runtime->buffer + appl_ptr,
+ kernelbuf + result, count1);
+ else if (userbuf) {
+ spin_unlock_irqrestore(&runtime->lock, flags);
+- if (copy_from_user(runtime->buffer + runtime->appl_ptr,
++ if (copy_from_user(runtime->buffer + appl_ptr,
+ userbuf + result, count1)) {
+ spin_lock_irqsave(&runtime->lock, flags);
+ result = result > 0 ? result : -EFAULT;
+@@ -1210,9 +1269,6 @@ static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,
+ }
+ spin_lock_irqsave(&runtime->lock, flags);
+ }
+- runtime->appl_ptr += count1;
+- runtime->appl_ptr %= runtime->buffer_size;
+- runtime->avail -= count1;
+ result += count1;
+ count -= count1;
+ }
+diff --git a/sound/core/seq/oss/seq_oss_init.c b/sound/core/seq/oss/seq_oss_init.c
+index 2de3feff70d0..dad5b1123e46 100644
+--- a/sound/core/seq/oss/seq_oss_init.c
++++ b/sound/core/seq/oss/seq_oss_init.c
+@@ -202,7 +202,7 @@ snd_seq_oss_open(struct file *file, int level)
+
+ dp->index = i;
+ if (i >= SNDRV_SEQ_OSS_MAX_CLIENTS) {
+- pr_err("ALSA: seq_oss: too many applications\n");
++ pr_debug("ALSA: seq_oss: too many applications\n");
+ rc = -ENOMEM;
+ goto _error;
+ }
+diff --git a/sound/core/seq/oss/seq_oss_synth.c b/sound/core/seq/oss/seq_oss_synth.c
+index 48e4fe1b68ab..f38cf91b4faf 100644
+--- a/sound/core/seq/oss/seq_oss_synth.c
++++ b/sound/core/seq/oss/seq_oss_synth.c
+@@ -308,7 +308,7 @@ snd_seq_oss_synth_cleanup(struct seq_oss_devinfo *dp)
+ struct seq_oss_synth *rec;
+ struct seq_oss_synthinfo *info;
+
+- if (snd_BUG_ON(dp->max_synthdev >= SNDRV_SEQ_OSS_MAX_SYNTH_DEVS))
++ if (snd_BUG_ON(dp->max_synthdev > SNDRV_SEQ_OSS_MAX_SYNTH_DEVS))
+ return;
+ for (i = 0; i < dp->max_synthdev; i++) {
+ info = &dp->synths[i];
+diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
+index bd4741442909..ce6703ecfcef 100644
+--- a/sound/core/seq/seq_clientmgr.c
++++ b/sound/core/seq/seq_clientmgr.c
+@@ -678,6 +678,9 @@ static int deliver_to_subscribers(struct snd_seq_client *client,
+ else
+ down_read(&grp->list_mutex);
+ list_for_each_entry(subs, &grp->list_head, src_list) {
++ /* both ports ready? */
++ if (atomic_read(&subs->ref_count) != 2)
++ continue;
+ event->dest = subs->info.dest;
+ if (subs->info.flags & SNDRV_SEQ_PORT_SUBS_TIMESTAMP)
+ /* convert time according to flag with subscription */
+diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c
+index 55170a20ae72..921fb2bd8fad 100644
+--- a/sound/core/seq/seq_ports.c
++++ b/sound/core/seq/seq_ports.c
+@@ -173,10 +173,6 @@ struct snd_seq_client_port *snd_seq_create_port(struct snd_seq_client *client,
+ }
+
+ /* */
+-enum group_type {
+- SRC_LIST, DEST_LIST
+-};
+-
+ static int subscribe_port(struct snd_seq_client *client,
+ struct snd_seq_client_port *port,
+ struct snd_seq_port_subs_info *grp,
+@@ -203,6 +199,20 @@ static struct snd_seq_client_port *get_client_port(struct snd_seq_addr *addr,
+ return NULL;
+ }
+
++static void delete_and_unsubscribe_port(struct snd_seq_client *client,
++ struct snd_seq_client_port *port,
++ struct snd_seq_subscribers *subs,
++ bool is_src, bool ack);
++
++static inline struct snd_seq_subscribers *
++get_subscriber(struct list_head *p, bool is_src)
++{
++ if (is_src)
++ return list_entry(p, struct snd_seq_subscribers, src_list);
++ else
++ return list_entry(p, struct snd_seq_subscribers, dest_list);
++}
++
+ /*
+ * remove all subscribers on the list
+ * this is called from port_delete, for each src and dest list.
+@@ -210,7 +220,7 @@ static struct snd_seq_client_port *get_client_port(struct snd_seq_addr *addr,
+ static void clear_subscriber_list(struct snd_seq_client *client,
+ struct snd_seq_client_port *port,
+ struct snd_seq_port_subs_info *grp,
+- int grptype)
++ int is_src)
+ {
+ struct list_head *p, *n;
+
+@@ -219,15 +229,13 @@ static void clear_subscriber_list(struct snd_seq_client *client,
+ struct snd_seq_client *c;
+ struct snd_seq_client_port *aport;
+
+- if (grptype == SRC_LIST) {
+- subs = list_entry(p, struct snd_seq_subscribers, src_list);
++ subs = get_subscriber(p, is_src);
++ if (is_src)
+ aport = get_client_port(&subs->info.dest, &c);
+- } else {
+- subs = list_entry(p, struct snd_seq_subscribers, dest_list);
++ else
+ aport = get_client_port(&subs->info.sender, &c);
+- }
+- list_del(p);
+- unsubscribe_port(client, port, grp, &subs->info, 0);
++ delete_and_unsubscribe_port(client, port, subs, is_src, false);
++
+ if (!aport) {
+ /* looks like the connected port is being deleted.
+ * we decrease the counter, and when both ports are deleted
+@@ -235,21 +243,14 @@ static void clear_subscriber_list(struct snd_seq_client *client,
+ */
+ if (atomic_dec_and_test(&subs->ref_count))
+ kfree(subs);
+- } else {
+- /* ok we got the connected port */
+- struct snd_seq_port_subs_info *agrp;
+- agrp = (grptype == SRC_LIST) ? &aport->c_dest : &aport->c_src;
+- down_write(&agrp->list_mutex);
+- if (grptype == SRC_LIST)
+- list_del(&subs->dest_list);
+- else
+- list_del(&subs->src_list);
+- up_write(&agrp->list_mutex);
+- unsubscribe_port(c, aport, agrp, &subs->info, 1);
+- kfree(subs);
+- snd_seq_port_unlock(aport);
+- snd_seq_client_unlock(c);
++ continue;
+ }
++
++ /* ok we got the connected port */
++ delete_and_unsubscribe_port(c, aport, subs, !is_src, true);
++ kfree(subs);
++ snd_seq_port_unlock(aport);
++ snd_seq_client_unlock(c);
+ }
+ }
+
+@@ -262,8 +263,8 @@ static int port_delete(struct snd_seq_client *client,
+ snd_use_lock_sync(&port->use_lock);
+
+ /* clear subscribers info */
+- clear_subscriber_list(client, port, &port->c_src, SRC_LIST);
+- clear_subscriber_list(client, port, &port->c_dest, DEST_LIST);
++ clear_subscriber_list(client, port, &port->c_src, true);
++ clear_subscriber_list(client, port, &port->c_dest, false);
+
+ if (port->private_free)
+ port->private_free(port->private_data);
+@@ -479,85 +480,120 @@ static int match_subs_info(struct snd_seq_port_subscribe *r,
+ return 0;
+ }
+
+-
+-/* connect two ports */
+-int snd_seq_port_connect(struct snd_seq_client *connector,
+- struct snd_seq_client *src_client,
+- struct snd_seq_client_port *src_port,
+- struct snd_seq_client *dest_client,
+- struct snd_seq_client_port *dest_port,
+- struct snd_seq_port_subscribe *info)
++static int check_and_subscribe_port(struct snd_seq_client *client,
++ struct snd_seq_client_port *port,
++ struct snd_seq_subscribers *subs,
++ bool is_src, bool exclusive, bool ack)
+ {
+- struct snd_seq_port_subs_info *src = &src_port->c_src;
+- struct snd_seq_port_subs_info *dest = &dest_port->c_dest;
+- struct snd_seq_subscribers *subs, *s;
+- int err, src_called = 0;
+- unsigned long flags;
+- int exclusive;
++ struct snd_seq_port_subs_info *grp;
++ struct list_head *p;
++ struct snd_seq_subscribers *s;
++ int err;
+
+- subs = kzalloc(sizeof(*subs), GFP_KERNEL);
+- if (! subs)
+- return -ENOMEM;
+-
+- subs->info = *info;
+- atomic_set(&subs->ref_count, 2);
+-
+- down_write(&src->list_mutex);
+- down_write_nested(&dest->list_mutex, SINGLE_DEPTH_NESTING);
+-
+- exclusive = info->flags & SNDRV_SEQ_PORT_SUBS_EXCLUSIVE ? 1 : 0;
++ grp = is_src ? &port->c_src : &port->c_dest;
+ err = -EBUSY;
++ down_write(&grp->list_mutex);
+ if (exclusive) {
+- if (! list_empty(&src->list_head) || ! list_empty(&dest->list_head))
++ if (!list_empty(&grp->list_head))
+ goto __error;
+ } else {
+- if (src->exclusive || dest->exclusive)
++ if (grp->exclusive)
+ goto __error;
+ /* check whether already exists */
+- list_for_each_entry(s, &src->list_head, src_list) {
+- if (match_subs_info(info, &s->info))
+- goto __error;
+- }
+- list_for_each_entry(s, &dest->list_head, dest_list) {
+- if (match_subs_info(info, &s->info))
++ list_for_each(p, &grp->list_head) {
++ s = get_subscriber(p, is_src);
++ if (match_subs_info(&subs->info, &s->info))
+ goto __error;
+ }
+ }
+
+- if ((err = subscribe_port(src_client, src_port, src, info,
+- connector->number != src_client->number)) < 0)
+- goto __error;
+- src_called = 1;
+-
+- if ((err = subscribe_port(dest_client, dest_port, dest, info,
+- connector->number != dest_client->number)) < 0)
++ err = subscribe_port(client, port, grp, &subs->info, ack);
++ if (err < 0) {
++ grp->exclusive = 0;
+ goto __error;
++ }
+
+ /* add to list */
+- write_lock_irqsave(&src->list_lock, flags);
+- // write_lock(&dest->list_lock); // no other lock yet
+- list_add_tail(&subs->src_list, &src->list_head);
+- list_add_tail(&subs->dest_list, &dest->list_head);
+- // write_unlock(&dest->list_lock); // no other lock yet
+- write_unlock_irqrestore(&src->list_lock, flags);
++ write_lock_irq(&grp->list_lock);
++ if (is_src)
++ list_add_tail(&subs->src_list, &grp->list_head);
++ else
++ list_add_tail(&subs->dest_list, &grp->list_head);
++ grp->exclusive = exclusive;
++ atomic_inc(&subs->ref_count);
++ write_unlock_irq(&grp->list_lock);
++ err = 0;
++
++ __error:
++ up_write(&grp->list_mutex);
++ return err;
++}
+
+- src->exclusive = dest->exclusive = exclusive;
++static void delete_and_unsubscribe_port(struct snd_seq_client *client,
++ struct snd_seq_client_port *port,
++ struct snd_seq_subscribers *subs,
++ bool is_src, bool ack)
++{
++ struct snd_seq_port_subs_info *grp;
++
++ grp = is_src ? &port->c_src : &port->c_dest;
++ down_write(&grp->list_mutex);
++ write_lock_irq(&grp->list_lock);
++ if (is_src)
++ list_del(&subs->src_list);
++ else
++ list_del(&subs->dest_list);
++ grp->exclusive = 0;
++ write_unlock_irq(&grp->list_lock);
++ up_write(&grp->list_mutex);
++
++ unsubscribe_port(client, port, grp, &subs->info, ack);
++}
++
++/* connect two ports */
++int snd_seq_port_connect(struct snd_seq_client *connector,
++ struct snd_seq_client *src_client,
++ struct snd_seq_client_port *src_port,
++ struct snd_seq_client *dest_client,
++ struct snd_seq_client_port *dest_port,
++ struct snd_seq_port_subscribe *info)
++{
++ struct snd_seq_subscribers *subs;
++ bool exclusive;
++ int err;
++
++ subs = kzalloc(sizeof(*subs), GFP_KERNEL);
++ if (!subs)
++ return -ENOMEM;
++
++ subs->info = *info;
++ atomic_set(&subs->ref_count, 0);
++ INIT_LIST_HEAD(&subs->src_list);
++ INIT_LIST_HEAD(&subs->dest_list);
++
++ exclusive = !!(info->flags & SNDRV_SEQ_PORT_SUBS_EXCLUSIVE);
++
++ err = check_and_subscribe_port(src_client, src_port, subs, true,
++ exclusive,
++ connector->number != src_client->number);
++ if (err < 0)
++ goto error;
++ err = check_and_subscribe_port(dest_client, dest_port, subs, false,
++ exclusive,
++ connector->number != dest_client->number);
++ if (err < 0)
++ goto error_dest;
+
+- up_write(&dest->list_mutex);
+- up_write(&src->list_mutex);
+ return 0;
+
+- __error:
+- if (src_called)
+- unsubscribe_port(src_client, src_port, src, info,
+- connector->number != src_client->number);
++ error_dest:
++ delete_and_unsubscribe_port(src_client, src_port, subs, true,
++ connector->number != src_client->number);
++ error:
+ kfree(subs);
+- up_write(&dest->list_mutex);
+- up_write(&src->list_mutex);
+ return err;
+ }
+
+-
+ /* remove the connection */
+ int snd_seq_port_disconnect(struct snd_seq_client *connector,
+ struct snd_seq_client *src_client,
+@@ -567,37 +603,28 @@ int snd_seq_port_disconnect(struct snd_seq_client *connector,
+ struct snd_seq_port_subscribe *info)
+ {
+ struct snd_seq_port_subs_info *src = &src_port->c_src;
+- struct snd_seq_port_subs_info *dest = &dest_port->c_dest;
+ struct snd_seq_subscribers *subs;
+ int err = -ENOENT;
+- unsigned long flags;
+
+ down_write(&src->list_mutex);
+- down_write_nested(&dest->list_mutex, SINGLE_DEPTH_NESTING);
+-
+ /* look for the connection */
+ list_for_each_entry(subs, &src->list_head, src_list) {
+ if (match_subs_info(info, &subs->info)) {
+- write_lock_irqsave(&src->list_lock, flags);
+- // write_lock(&dest->list_lock); // no lock yet
+- list_del(&subs->src_list);
+- list_del(&subs->dest_list);
+- // write_unlock(&dest->list_lock);
+- write_unlock_irqrestore(&src->list_lock, flags);
+- src->exclusive = dest->exclusive = 0;
+- unsubscribe_port(src_client, src_port, src, info,
+- connector->number != src_client->number);
+- unsubscribe_port(dest_client, dest_port, dest, info,
+- connector->number != dest_client->number);
+- kfree(subs);
++ atomic_dec(&subs->ref_count); /* mark as not ready */
+ err = 0;
+ break;
+ }
+ }
+-
+- up_write(&dest->list_mutex);
+ up_write(&src->list_mutex);
+- return err;
++ if (err < 0)
++ return err;
++
++ delete_and_unsubscribe_port(src_client, src_port, subs, true,
++ connector->number != src_client->number);
++ delete_and_unsubscribe_port(dest_client, dest_port, subs, false,
++ connector->number != dest_client->number);
++ kfree(subs);
++ return 0;
+ }
+
+
+diff --git a/sound/core/seq/seq_timer.c b/sound/core/seq/seq_timer.c
+index 186f1611103c..a2468f1101d1 100644
+--- a/sound/core/seq/seq_timer.c
++++ b/sound/core/seq/seq_timer.c
+@@ -90,6 +90,9 @@ void snd_seq_timer_delete(struct snd_seq_timer **tmr)
+
+ void snd_seq_timer_defaults(struct snd_seq_timer * tmr)
+ {
++ unsigned long flags;
++
++ spin_lock_irqsave(&tmr->lock, flags);
+ /* setup defaults */
+ tmr->ppq = 96; /* 96 PPQ */
+ tmr->tempo = 500000; /* 120 BPM */
+@@ -105,21 +108,25 @@ void snd_seq_timer_defaults(struct snd_seq_timer * tmr)
+ tmr->preferred_resolution = seq_default_timer_resolution;
+
+ tmr->skew = tmr->skew_base = SKEW_BASE;
++ spin_unlock_irqrestore(&tmr->lock, flags);
+ }
+
+-void snd_seq_timer_reset(struct snd_seq_timer * tmr)
++static void seq_timer_reset(struct snd_seq_timer *tmr)
+ {
+- unsigned long flags;
+-
+- spin_lock_irqsave(&tmr->lock, flags);
+-
+ /* reset time & songposition */
+ tmr->cur_time.tv_sec = 0;
+ tmr->cur_time.tv_nsec = 0;
+
+ tmr->tick.cur_tick = 0;
+ tmr->tick.fraction = 0;
++}
++
++void snd_seq_timer_reset(struct snd_seq_timer *tmr)
++{
++ unsigned long flags;
+
++ spin_lock_irqsave(&tmr->lock, flags);
++ seq_timer_reset(tmr);
+ spin_unlock_irqrestore(&tmr->lock, flags);
+ }
+
+@@ -138,8 +145,11 @@ static void snd_seq_timer_interrupt(struct snd_timer_instance *timeri,
+ tmr = q->timer;
+ if (tmr == NULL)
+ return;
+- if (!tmr->running)
++ spin_lock_irqsave(&tmr->lock, flags);
++ if (!tmr->running) {
++ spin_unlock_irqrestore(&tmr->lock, flags);
+ return;
++ }
+
+ resolution *= ticks;
+ if (tmr->skew != tmr->skew_base) {
+@@ -148,8 +158,6 @@ static void snd_seq_timer_interrupt(struct snd_timer_instance *timeri,
+ (((resolution & 0xffff) * tmr->skew) >> 16);
+ }
+
+- spin_lock_irqsave(&tmr->lock, flags);
+-
+ /* update timer */
+ snd_seq_inc_time_nsec(&tmr->cur_time, resolution);
+
+@@ -296,26 +304,30 @@ int snd_seq_timer_open(struct snd_seq_queue *q)
+ t->callback = snd_seq_timer_interrupt;
+ t->callback_data = q;
+ t->flags |= SNDRV_TIMER_IFLG_AUTO;
++ spin_lock_irq(&tmr->lock);
+ tmr->timeri = t;
++ spin_unlock_irq(&tmr->lock);
+ return 0;
+ }
+
+ int snd_seq_timer_close(struct snd_seq_queue *q)
+ {
+ struct snd_seq_timer *tmr;
++ struct snd_timer_instance *t;
+
+ tmr = q->timer;
+ if (snd_BUG_ON(!tmr))
+ return -EINVAL;
+- if (tmr->timeri) {
+- snd_timer_stop(tmr->timeri);
+- snd_timer_close(tmr->timeri);
+- tmr->timeri = NULL;
+- }
++ spin_lock_irq(&tmr->lock);
++ t = tmr->timeri;
++ tmr->timeri = NULL;
++ spin_unlock_irq(&tmr->lock);
++ if (t)
++ snd_timer_close(t);
+ return 0;
+ }
+
+-int snd_seq_timer_stop(struct snd_seq_timer * tmr)
++static int seq_timer_stop(struct snd_seq_timer *tmr)
+ {
+ if (! tmr->timeri)
+ return -EINVAL;
+@@ -326,6 +338,17 @@ int snd_seq_timer_stop(struct snd_seq_timer * tmr)
+ return 0;
+ }
+
++int snd_seq_timer_stop(struct snd_seq_timer *tmr)
++{
++ unsigned long flags;
++ int err;
++
++ spin_lock_irqsave(&tmr->lock, flags);
++ err = seq_timer_stop(tmr);
++ spin_unlock_irqrestore(&tmr->lock, flags);
++ return err;
++}
++
+ static int initialize_timer(struct snd_seq_timer *tmr)
+ {
+ struct snd_timer *t;
+@@ -358,13 +381,13 @@ static int initialize_timer(struct snd_seq_timer *tmr)
+ return 0;
+ }
+
+-int snd_seq_timer_start(struct snd_seq_timer * tmr)
++static int seq_timer_start(struct snd_seq_timer *tmr)
+ {
+ if (! tmr->timeri)
+ return -EINVAL;
+ if (tmr->running)
+- snd_seq_timer_stop(tmr);
+- snd_seq_timer_reset(tmr);
++ seq_timer_stop(tmr);
++ seq_timer_reset(tmr);
+ if (initialize_timer(tmr) < 0)
+ return -EINVAL;
+ snd_timer_start(tmr->timeri, tmr->ticks);
+@@ -373,14 +396,25 @@ int snd_seq_timer_start(struct snd_seq_timer * tmr)
+ return 0;
+ }
+
+-int snd_seq_timer_continue(struct snd_seq_timer * tmr)
++int snd_seq_timer_start(struct snd_seq_timer *tmr)
++{
++ unsigned long flags;
++ int err;
++
++ spin_lock_irqsave(&tmr->lock, flags);
++ err = seq_timer_start(tmr);
++ spin_unlock_irqrestore(&tmr->lock, flags);
++ return err;
++}
++
++static int seq_timer_continue(struct snd_seq_timer *tmr)
+ {
+ if (! tmr->timeri)
+ return -EINVAL;
+ if (tmr->running)
+ return -EBUSY;
+ if (! tmr->initialized) {
+- snd_seq_timer_reset(tmr);
++ seq_timer_reset(tmr);
+ if (initialize_timer(tmr) < 0)
+ return -EINVAL;
+ }
+@@ -390,11 +424,24 @@ int snd_seq_timer_continue(struct snd_seq_timer * tmr)
+ return 0;
+ }
+
++int snd_seq_timer_continue(struct snd_seq_timer *tmr)
++{
++ unsigned long flags;
++ int err;
++
++ spin_lock_irqsave(&tmr->lock, flags);
++ err = seq_timer_continue(tmr);
++ spin_unlock_irqrestore(&tmr->lock, flags);
++ return err;
++}
++
+ /* return current 'real' time. use timeofday() to get better granularity. */
+ snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr)
+ {
+ snd_seq_real_time_t cur_time;
++ unsigned long flags;
+
++ spin_lock_irqsave(&tmr->lock, flags);
+ cur_time = tmr->cur_time;
+ if (tmr->running) {
+ struct timeval tm;
+@@ -410,7 +457,7 @@ snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr)
+ }
+ snd_seq_sanity_real_time(&cur_time);
+ }
+-
++ spin_unlock_irqrestore(&tmr->lock, flags);
+ return cur_time;
+ }
+
+diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c
+index 56e0f4cd3f82..81134e067184 100644
+--- a/sound/core/seq/seq_virmidi.c
++++ b/sound/core/seq/seq_virmidi.c
+@@ -155,21 +155,26 @@ static void snd_virmidi_output_trigger(struct snd_rawmidi_substream *substream,
+ struct snd_virmidi *vmidi = substream->runtime->private_data;
+ int count, res;
+ unsigned char buf[32], *pbuf;
++ unsigned long flags;
+
+ if (up) {
+ vmidi->trigger = 1;
+ if (vmidi->seq_mode == SNDRV_VIRMIDI_SEQ_DISPATCH &&
+ !(vmidi->rdev->flags & SNDRV_VIRMIDI_SUBSCRIBE)) {
+- snd_rawmidi_transmit_ack(substream, substream->runtime->buffer_size - substream->runtime->avail);
+- return; /* ignored */
++ while (snd_rawmidi_transmit(substream, buf,
++ sizeof(buf)) > 0) {
++ /* ignored */
++ }
++ return;
+ }
+ if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
+ if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
+ return;
+ vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
+ }
++ spin_lock_irqsave(&substream->runtime->lock, flags);
+ while (1) {
+- count = snd_rawmidi_transmit_peek(substream, buf, sizeof(buf));
++ count = __snd_rawmidi_transmit_peek(substream, buf, sizeof(buf));
+ if (count <= 0)
+ break;
+ pbuf = buf;
+@@ -179,16 +184,18 @@ static void snd_virmidi_output_trigger(struct snd_rawmidi_substream *substream,
+ snd_midi_event_reset_encode(vmidi->parser);
+ continue;
+ }
+- snd_rawmidi_transmit_ack(substream, res);
++ __snd_rawmidi_transmit_ack(substream, res);
+ pbuf += res;
+ count -= res;
+ if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
+ if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
+- return;
++ goto out;
+ vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
+ }
+ }
+ }
++ out:
++ spin_unlock_irqrestore(&substream->runtime->lock, flags);
+ } else {
+ vmidi->trigger = 0;
+ }
+@@ -254,9 +261,13 @@ static int snd_virmidi_output_open(struct snd_rawmidi_substream *substream)
+ */
+ static int snd_virmidi_input_close(struct snd_rawmidi_substream *substream)
+ {
++ struct snd_virmidi_dev *rdev = substream->rmidi->private_data;
+ struct snd_virmidi *vmidi = substream->runtime->private_data;
+- snd_midi_event_free(vmidi->parser);
++
++ write_lock_irq(&rdev->filelist_lock);
+ list_del(&vmidi->list);
++ write_unlock_irq(&rdev->filelist_lock);
++ snd_midi_event_free(vmidi->parser);
+ substream->runtime->private_data = NULL;
+ kfree(vmidi);
+ return 0;
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index a419878901c4..00e8c5f4de17 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -305,8 +305,7 @@ int snd_timer_open(struct snd_timer_instance **ti,
+ return 0;
+ }
+
+-static int _snd_timer_stop(struct snd_timer_instance *timeri,
+- int keep_flag, int event);
++static int _snd_timer_stop(struct snd_timer_instance *timeri, int event);
+
+ /*
+ * close a timer instance
+@@ -348,7 +347,7 @@ int snd_timer_close(struct snd_timer_instance *timeri)
+ spin_unlock_irq(&timer->lock);
+ mutex_lock(®ister_mutex);
+ list_del(&timeri->open_list);
+- if (timer && list_empty(&timer->open_list_head) &&
++ if (list_empty(&timer->open_list_head) &&
+ timer->hw.close)
+ timer->hw.close(timer);
+ /* remove slave links */
+@@ -452,6 +451,10 @@ static int snd_timer_start_slave(struct snd_timer_instance *timeri)
+ unsigned long flags;
+
+ spin_lock_irqsave(&slave_active_lock, flags);
++ if (timeri->flags & SNDRV_TIMER_IFLG_RUNNING) {
++ spin_unlock_irqrestore(&slave_active_lock, flags);
++ return -EBUSY;
++ }
+ timeri->flags |= SNDRV_TIMER_IFLG_RUNNING;
+ if (timeri->master && timeri->timer) {
+ spin_lock(&timeri->timer->lock);
+@@ -476,7 +479,8 @@ int snd_timer_start(struct snd_timer_instance *timeri, unsigned int ticks)
+ return -EINVAL;
+ if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
+ result = snd_timer_start_slave(timeri);
+- snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
++ if (result >= 0)
++ snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
+ return result;
+ }
+ timer = timeri->timer;
+@@ -485,16 +489,22 @@ int snd_timer_start(struct snd_timer_instance *timeri, unsigned int ticks)
+ if (timer->card && timer->card->shutdown)
+ return -ENODEV;
+ spin_lock_irqsave(&timer->lock, flags);
++ if (timeri->flags & (SNDRV_TIMER_IFLG_RUNNING |
++ SNDRV_TIMER_IFLG_START)) {
++ result = -EBUSY;
++ goto unlock;
++ }
+ timeri->ticks = timeri->cticks = ticks;
+ timeri->pticks = 0;
+ result = snd_timer_start1(timer, timeri, ticks);
++ unlock:
+ spin_unlock_irqrestore(&timer->lock, flags);
+- snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
++ if (result >= 0)
++ snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
+ return result;
+ }
+
+-static int _snd_timer_stop(struct snd_timer_instance * timeri,
+- int keep_flag, int event)
++static int _snd_timer_stop(struct snd_timer_instance *timeri, int event)
+ {
+ struct snd_timer *timer;
+ unsigned long flags;
+@@ -503,19 +513,26 @@ static int _snd_timer_stop(struct snd_timer_instance * timeri,
+ return -ENXIO;
+
+ if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
+- if (!keep_flag) {
+- spin_lock_irqsave(&slave_active_lock, flags);
+- timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+- list_del_init(&timeri->ack_list);
+- list_del_init(&timeri->active_list);
++ spin_lock_irqsave(&slave_active_lock, flags);
++ if (!(timeri->flags & SNDRV_TIMER_IFLG_RUNNING)) {
+ spin_unlock_irqrestore(&slave_active_lock, flags);
++ return -EBUSY;
+ }
++ timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
++ list_del_init(&timeri->ack_list);
++ list_del_init(&timeri->active_list);
++ spin_unlock_irqrestore(&slave_active_lock, flags);
+ goto __end;
+ }
+ timer = timeri->timer;
+ if (!timer)
+ return -EINVAL;
+ spin_lock_irqsave(&timer->lock, flags);
++ if (!(timeri->flags & (SNDRV_TIMER_IFLG_RUNNING |
++ SNDRV_TIMER_IFLG_START))) {
++ spin_unlock_irqrestore(&timer->lock, flags);
++ return -EBUSY;
++ }
+ list_del_init(&timeri->ack_list);
+ list_del_init(&timeri->active_list);
+ if (timer->card && timer->card->shutdown) {
+@@ -534,9 +551,7 @@ static int _snd_timer_stop(struct snd_timer_instance * timeri,
+ }
+ }
+ }
+- if (!keep_flag)
+- timeri->flags &=
+- ~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
++ timeri->flags &= ~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
+ spin_unlock_irqrestore(&timer->lock, flags);
+ __end:
+ if (event != SNDRV_TIMER_EVENT_RESOLUTION)
+@@ -555,7 +570,7 @@ int snd_timer_stop(struct snd_timer_instance *timeri)
+ unsigned long flags;
+ int err;
+
+- err = _snd_timer_stop(timeri, 0, SNDRV_TIMER_EVENT_STOP);
++ err = _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_STOP);
+ if (err < 0)
+ return err;
+ timer = timeri->timer;
+@@ -587,10 +602,15 @@ int snd_timer_continue(struct snd_timer_instance *timeri)
+ if (timer->card && timer->card->shutdown)
+ return -ENODEV;
+ spin_lock_irqsave(&timer->lock, flags);
++ if (timeri->flags & SNDRV_TIMER_IFLG_RUNNING) {
++ result = -EBUSY;
++ goto unlock;
++ }
+ if (!timeri->cticks)
+ timeri->cticks = 1;
+ timeri->pticks = 0;
+ result = snd_timer_start1(timer, timeri, timer->sticks);
++ unlock:
+ spin_unlock_irqrestore(&timer->lock, flags);
+ snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_CONTINUE);
+ return result;
+@@ -601,7 +621,7 @@ int snd_timer_continue(struct snd_timer_instance *timeri)
+ */
+ int snd_timer_pause(struct snd_timer_instance * timeri)
+ {
+- return _snd_timer_stop(timeri, 0, SNDRV_TIMER_EVENT_PAUSE);
++ return _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_PAUSE);
+ }
+
+ /*
+@@ -724,8 +744,8 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)
+ ti->cticks = ti->ticks;
+ } else {
+ ti->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+- if (--timer->running)
+- list_del_init(&ti->active_list);
++ --timer->running;
++ list_del_init(&ti->active_list);
+ }
+ if ((timer->hw.flags & SNDRV_TIMER_HW_TASKLET) ||
+ (ti->flags & SNDRV_TIMER_IFLG_FAST))
+diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
+index d11baaf0f0b4..96592d5ba7bf 100644
+--- a/sound/drivers/dummy.c
++++ b/sound/drivers/dummy.c
+@@ -87,7 +87,7 @@ MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver.");
+ module_param(fake_buffer, bool, 0444);
+ MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations.");
+ #ifdef CONFIG_HIGH_RES_TIMERS
+-module_param(hrtimer, bool, 0644);
++module_param(hrtimer, bool, 0444);
+ MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source.");
+ #endif
+
+diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c
+index 98e4fc8121a1..5e547cb199f0 100644
+--- a/sound/firewire/bebob/bebob_stream.c
++++ b/sound/firewire/bebob/bebob_stream.c
+@@ -47,14 +47,16 @@ static const unsigned int bridgeco_freq_table[] = {
+ [6] = 0x07,
+ };
+
+-static unsigned int
+-get_formation_index(unsigned int rate)
++static int
++get_formation_index(unsigned int rate, unsigned int *index)
+ {
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(snd_bebob_rate_table); i++) {
+- if (snd_bebob_rate_table[i] == rate)
+- return i;
++ if (snd_bebob_rate_table[i] == rate) {
++ *index = i;
++ return 0;
++ }
+ }
+ return -EINVAL;
+ }
+@@ -367,7 +369,9 @@ make_both_connections(struct snd_bebob *bebob, unsigned int rate)
+ goto end;
+
+ /* confirm params for both streams */
+- index = get_formation_index(rate);
++ err = get_formation_index(rate, &index);
++ if (err < 0)
++ goto end;
+ pcm_channels = bebob->tx_stream_formations[index].pcm;
+ midi_channels = bebob->tx_stream_formations[index].midi;
+ amdtp_stream_set_parameters(&bebob->tx_stream,
+diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
+index b791529bf31c..8f50a257a80d 100644
+--- a/sound/pci/hda/patch_cirrus.c
++++ b/sound/pci/hda/patch_cirrus.c
+@@ -614,6 +614,7 @@ enum {
+ CS4208_MAC_AUTO,
+ CS4208_MBA6,
+ CS4208_MBP11,
++ CS4208_MACMINI,
+ CS4208_GPIO0,
+ };
+
+@@ -621,6 +622,7 @@ static const struct hda_model_fixup cs4208_models[] = {
+ { .id = CS4208_GPIO0, .name = "gpio0" },
+ { .id = CS4208_MBA6, .name = "mba6" },
+ { .id = CS4208_MBP11, .name = "mbp11" },
++ { .id = CS4208_MACMINI, .name = "macmini" },
+ {}
+ };
+
+@@ -632,6 +634,7 @@ static const struct snd_pci_quirk cs4208_fixup_tbl[] = {
+ /* codec SSID matching */
+ static const struct snd_pci_quirk cs4208_mac_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x106b, 0x5e00, "MacBookPro 11,2", CS4208_MBP11),
++ SND_PCI_QUIRK(0x106b, 0x6c00, "MacMini 7,1", CS4208_MACMINI),
+ SND_PCI_QUIRK(0x106b, 0x7100, "MacBookAir 6,1", CS4208_MBA6),
+ SND_PCI_QUIRK(0x106b, 0x7200, "MacBookAir 6,2", CS4208_MBA6),
+ SND_PCI_QUIRK(0x106b, 0x7b00, "MacBookPro 12,1", CS4208_MBP11),
+@@ -666,6 +669,24 @@ static void cs4208_fixup_mac(struct hda_codec *codec,
+ snd_hda_apply_fixup(codec, action);
+ }
+
++/* MacMini 7,1 has the inverted jack detection */
++static void cs4208_fixup_macmini(struct hda_codec *codec,
++ const struct hda_fixup *fix, int action)
++{
++ static const struct hda_pintbl pincfgs[] = {
++ { 0x18, 0x00ab9150 }, /* mic (audio-in) jack: disable detect */
++ { 0x21, 0x004be140 }, /* SPDIF: disable detect */
++ { }
++ };
++
++ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
++ /* HP pin (0x10) has an inverted detection */
++ codec->inv_jack_detect = 1;
++ /* disable the bogus Mic and SPDIF jack detections */
++ snd_hda_apply_pincfgs(codec, pincfgs);
++ }
++}
++
+ static int cs4208_spdif_sw_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+ {
+@@ -709,6 +730,12 @@ static const struct hda_fixup cs4208_fixups[] = {
+ .chained = true,
+ .chain_id = CS4208_GPIO0,
+ },
++ [CS4208_MACMINI] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = cs4208_fixup_macmini,
++ .chained = true,
++ .chain_id = CS4208_GPIO0,
++ },
+ [CS4208_GPIO0] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = cs4208_fixup_gpio0,
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index fb9a8a5787a6..37d8ababfc04 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1118,6 +1118,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ switch (chip->usb_id) {
+ case USB_ID(0x045E, 0x075D): /* MS Lifecam Cinema */
+ case USB_ID(0x045E, 0x076D): /* MS Lifecam HD-5000 */
++ case USB_ID(0x045E, 0x076F): /* MS Lifecam HD-6000 */
+ case USB_ID(0x045E, 0x0772): /* MS Lifecam Studio */
+ case USB_ID(0x045E, 0x0779): /* MS Lifecam HD-3000 */
+ case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
+@@ -1202,8 +1203,12 @@ void snd_usb_set_interface_quirk(struct usb_device *dev)
+ * "Playback Design" products need a 50ms delay after setting the
+ * USB interface.
+ */
+- if (le16_to_cpu(dev->descriptor.idVendor) == 0x23ba)
++ switch (le16_to_cpu(dev->descriptor.idVendor)) {
++ case 0x23ba: /* Playback Design */
++ case 0x0644: /* TEAC Corp. */
+ mdelay(50);
++ break;
++ }
+ }
+
+ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
+@@ -1218,6 +1223,14 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
+ (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
+ mdelay(20);
+
++ /*
++ * "TEAC Corp." products need a 20ms delay after each
++ * class compliant request
++ */
++ if ((le16_to_cpu(dev->descriptor.idVendor) == 0x0644) &&
++ (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
++ mdelay(20);
++
+ /* Marantz/Denon devices with USB DAC functionality need a delay
+ * after each class compliant request
+ */
+@@ -1266,7 +1279,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
+ case USB_ID(0x20b1, 0x3008): /* iFi Audio micro/nano iDSD */
+ case USB_ID(0x20b1, 0x2008): /* Matrix Audio X-Sabre */
+ case USB_ID(0x20b1, 0x300a): /* Matrix Audio Mini-i Pro */
+- case USB_ID(0x22d8, 0x0416): /* OPPO HA-1*/
++ case USB_ID(0x22d9, 0x0416): /* OPPO HA-1 */
+ if (fp->altsetting == 2)
+ return SNDRV_PCM_FMTBIT_DSD_U32_BE;
+ break;
+@@ -1275,6 +1288,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
+ case USB_ID(0x20b1, 0x2009): /* DIYINHK DSD DXD 384kHz USB to I2S/DSD */
+ case USB_ID(0x20b1, 0x2023): /* JLsounds I2SoverUSB */
+ case USB_ID(0x20b1, 0x3023): /* Aune X1S 32BIT/384 DSD DAC */
++ case USB_ID(0x2616, 0x0106): /* PS Audio NuWave DAC */
+ if (fp->altsetting == 3)
+ return SNDRV_PCM_FMTBIT_DSD_U32_BE;
+ break;
+diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
+index ed5461f065bd..f64a2d54d467 100644
+--- a/tools/lib/traceevent/event-parse.c
++++ b/tools/lib/traceevent/event-parse.c
+@@ -4841,13 +4841,12 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event
+ sizeof(long) != 8) {
+ char *p;
+
+- ls = 2;
+ /* make %l into %ll */
+- p = strchr(format, 'l');
+- if (p)
++ if (ls == 1 && (p = strchr(format, 'l')))
+ memmove(p+1, p, strlen(p)+1);
+ else if (strcmp(format, "%p") == 0)
+ strcpy(format, "0x%llx");
++ ls = 2;
+ }
+ switch (ls) {
+ case -2:
+diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
+index 0c74012575ac..83054ef6c1a1 100644
+--- a/tools/perf/util/session.c
++++ b/tools/perf/util/session.c
+@@ -816,7 +816,7 @@ static struct machine *machines__find_for_cpumode(struct machines *machines,
+
+ machine = machines__find(machines, pid);
+ if (!machine)
+- machine = machines__find(machines, DEFAULT_GUEST_KERNEL_ID);
++ machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
+ return machine;
+ }
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-01-31 23:29 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-01-31 23:29 UTC (permalink / raw
To: gentoo-commits
commit: 8e7f5205bb1197eb27e5adb6cd52da00a9452499
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sun Jan 31 23:29:43 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sun Jan 31 23:29:43 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=8e7f5205
Linux patch 4.1.17
0000_README | 4 +
1016_linux-4.1.17.patch | 4830 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 4834 insertions(+)
diff --git a/0000_README b/0000_README
index 1ca97cd..8b9fa0f 100644
--- a/0000_README
+++ b/0000_README
@@ -107,6 +107,10 @@ Patch: 1015_linux-4.1.16.patch
From: http://www.kernel.org
Desc: Linux 4.1.16
+Patch: 1016_linux-4.1.17.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.17
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1016_linux-4.1.17.patch b/1016_linux-4.1.17.patch
new file mode 100644
index 0000000..214c6ac
--- /dev/null
+++ b/1016_linux-4.1.17.patch
@@ -0,0 +1,4830 @@
+diff --git a/Makefile b/Makefile
+index 7609f1dcdcb9..d398dd440bc9 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 16
++SUBLEVEL = 17
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
+index 191dcfab9f60..da09ddcfcc00 100644
+--- a/arch/arm/kvm/mmu.c
++++ b/arch/arm/kvm/mmu.c
+@@ -98,6 +98,11 @@ static void kvm_flush_dcache_pud(pud_t pud)
+ __kvm_flush_dcache_pud(pud);
+ }
+
++static bool kvm_is_device_pfn(unsigned long pfn)
++{
++ return !pfn_valid(pfn);
++}
++
+ /**
+ * stage2_dissolve_pmd() - clear and flush huge PMD entry
+ * @kvm: pointer to kvm structure.
+@@ -213,7 +218,7 @@ static void unmap_ptes(struct kvm *kvm, pmd_t *pmd,
+ kvm_tlb_flush_vmid_ipa(kvm, addr);
+
+ /* No need to invalidate the cache for device mappings */
+- if ((pte_val(old_pte) & PAGE_S2_DEVICE) != PAGE_S2_DEVICE)
++ if (!kvm_is_device_pfn(pte_pfn(old_pte)))
+ kvm_flush_dcache_pte(old_pte);
+
+ put_page(virt_to_page(pte));
+@@ -305,8 +310,7 @@ static void stage2_flush_ptes(struct kvm *kvm, pmd_t *pmd,
+
+ pte = pte_offset_kernel(pmd, addr);
+ do {
+- if (!pte_none(*pte) &&
+- (pte_val(*pte) & PAGE_S2_DEVICE) != PAGE_S2_DEVICE)
++ if (!pte_none(*pte) && !kvm_is_device_pfn(pte_pfn(*pte)))
+ kvm_flush_dcache_pte(*pte);
+ } while (pte++, addr += PAGE_SIZE, addr != end);
+ }
+@@ -1037,11 +1041,6 @@ static bool kvm_is_write_fault(struct kvm_vcpu *vcpu)
+ return kvm_vcpu_dabt_iswrite(vcpu);
+ }
+
+-static bool kvm_is_device_pfn(unsigned long pfn)
+-{
+- return !pfn_valid(pfn);
+-}
+-
+ /**
+ * stage2_wp_ptes - write protect PMD range
+ * @pmd: pointer to pmd entry
+diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
+index e0e23582c8b4..5fe949b084ac 100644
+--- a/arch/arm/net/bpf_jit_32.c
++++ b/arch/arm/net/bpf_jit_32.c
+@@ -162,19 +162,6 @@ static inline int mem_words_used(struct jit_ctx *ctx)
+ return fls(ctx->seen & SEEN_MEM);
+ }
+
+-static inline bool is_load_to_a(u16 inst)
+-{
+- switch (inst) {
+- case BPF_LD | BPF_W | BPF_LEN:
+- case BPF_LD | BPF_W | BPF_ABS:
+- case BPF_LD | BPF_H | BPF_ABS:
+- case BPF_LD | BPF_B | BPF_ABS:
+- return true;
+- default:
+- return false;
+- }
+-}
+-
+ static void jit_fill_hole(void *area, unsigned int size)
+ {
+ u32 *ptr;
+@@ -186,7 +173,6 @@ static void jit_fill_hole(void *area, unsigned int size)
+ static void build_prologue(struct jit_ctx *ctx)
+ {
+ u16 reg_set = saved_regs(ctx);
+- u16 first_inst = ctx->skf->insns[0].code;
+ u16 off;
+
+ #ifdef CONFIG_FRAME_POINTER
+@@ -216,7 +202,7 @@ static void build_prologue(struct jit_ctx *ctx)
+ emit(ARM_MOV_I(r_X, 0), ctx);
+
+ /* do not leak kernel data to userspace */
+- if ((first_inst != (BPF_RET | BPF_K)) && !(is_load_to_a(first_inst)))
++ if (bpf_needs_clear_a(&ctx->skf->insns[0]))
+ emit(ARM_MOV_I(r_A, 0), ctx);
+
+ /* stack space for the BPF_MEM words */
+diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
+index 17e92f05b1fe..3ca894ecf699 100644
+--- a/arch/arm64/include/asm/kvm_emulate.h
++++ b/arch/arm64/include/asm/kvm_emulate.h
+@@ -99,11 +99,13 @@ static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu)
+ *vcpu_cpsr(vcpu) |= COMPAT_PSR_T_BIT;
+ }
+
++/*
++ * vcpu_reg should always be passed a register number coming from a
++ * read of ESR_EL2. Otherwise, it may give the wrong result on AArch32
++ * with banked registers.
++ */
+ static inline unsigned long *vcpu_reg(const struct kvm_vcpu *vcpu, u8 reg_num)
+ {
+- if (vcpu_mode_is_32bit(vcpu))
+- return vcpu_reg32(vcpu, reg_num);
+-
+ return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.regs[reg_num];
+ }
+
+diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
+index d882b833dbdb..608ac6aa497b 100644
+--- a/arch/arm64/kernel/ptrace.c
++++ b/arch/arm64/kernel/ptrace.c
+@@ -58,6 +58,12 @@
+ */
+ void ptrace_disable(struct task_struct *child)
+ {
++ /*
++ * This would be better off in core code, but PTRACE_DETACH has
++ * grown its fair share of arch-specific worts and changing it
++ * is likely to cause regressions on obscure architectures.
++ */
++ user_disable_single_step(child);
+ }
+
+ #ifdef CONFIG_HAVE_HW_BREAKPOINT
+diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
+index 74753132c3ac..bbdb53b87e13 100644
+--- a/arch/arm64/kernel/setup.c
++++ b/arch/arm64/kernel/setup.c
+@@ -523,6 +523,10 @@ static int c_show(struct seq_file *m, void *v)
+ seq_printf(m, "processor\t: %d\n", i);
+ #endif
+
++ seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
++ loops_per_jiffy / (500000UL/HZ),
++ loops_per_jiffy / (5000UL/HZ) % 100);
++
+ /*
+ * Dump out the common processor features in a single line.
+ * Userspace should read the hwcaps with getauxval(AT_HWCAP)
+diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c
+index 53f1f8dccf6c..357418137db7 100644
+--- a/arch/arm64/kernel/suspend.c
++++ b/arch/arm64/kernel/suspend.c
+@@ -1,3 +1,4 @@
++#include <linux/ftrace.h>
+ #include <linux/percpu.h>
+ #include <linux/slab.h>
+ #include <asm/cacheflush.h>
+@@ -71,6 +72,13 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
+ local_dbg_save(flags);
+
+ /*
++ * Function graph tracer state gets incosistent when the kernel
++ * calls functions that never return (aka suspend finishers) hence
++ * disable graph tracing during their execution.
++ */
++ pause_graph_tracing();
++
++ /*
+ * mm context saved on the stack, it will be restored when
+ * the cpu comes out of reset through the identity mapped
+ * page tables, so that the thread address space is properly
+@@ -111,6 +119,8 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
+ hw_breakpoint_restore(NULL);
+ }
+
++ unpause_graph_tracing();
++
+ /*
+ * Restore pstate flags. OS lock and mdscr have been already
+ * restored, so from this point onwards, debugging is fully
+diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c
+index 85c57158dcd9..648112e90ed5 100644
+--- a/arch/arm64/kvm/inject_fault.c
++++ b/arch/arm64/kvm/inject_fault.c
+@@ -48,7 +48,7 @@ static void prepare_fault32(struct kvm_vcpu *vcpu, u32 mode, u32 vect_offset)
+
+ /* Note: These now point to the banked copies */
+ *vcpu_spsr(vcpu) = new_spsr_value;
+- *vcpu_reg(vcpu, 14) = *vcpu_pc(vcpu) + return_offset;
++ *vcpu_reg32(vcpu, 14) = *vcpu_pc(vcpu) + return_offset;
+
+ /* Branch to exception vector */
+ if (sctlr & (1 << 13))
+diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
+index 5b8b664422d3..cb34eb8bbb9d 100644
+--- a/arch/arm64/mm/mmu.c
++++ b/arch/arm64/mm/mmu.c
+@@ -450,6 +450,9 @@ void __init paging_init(void)
+
+ empty_zero_page = virt_to_page(zero_page);
+
++ /* Ensure the zero page is visible to the page table walker */
++ dsb(ishst);
++
+ /*
+ * TTBR0 is only used for the identity mapping at this stage. Make it
+ * point to zero page to avoid speculatively fetching new entries.
+diff --git a/arch/arm64/net/bpf_jit.h b/arch/arm64/net/bpf_jit.h
+index 98a26ce82d26..aee5637ea436 100644
+--- a/arch/arm64/net/bpf_jit.h
++++ b/arch/arm64/net/bpf_jit.h
+@@ -1,7 +1,7 @@
+ /*
+ * BPF JIT compiler for ARM64
+ *
+- * Copyright (C) 2014 Zi Shen Lim <zlim.lnx@gmail.com>
++ * Copyright (C) 2014-2015 Zi Shen Lim <zlim.lnx@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -35,6 +35,7 @@
+ aarch64_insn_gen_comp_branch_imm(0, offset, Rt, A64_VARIANT(sf), \
+ AARCH64_INSN_BRANCH_COMP_##type)
+ #define A64_CBZ(sf, Rt, imm19) A64_COMP_BRANCH(sf, Rt, (imm19) << 2, ZERO)
++#define A64_CBNZ(sf, Rt, imm19) A64_COMP_BRANCH(sf, Rt, (imm19) << 2, NONZERO)
+
+ /* Conditional branch (immediate) */
+ #define A64_COND_BRANCH(cond, offset) \
+diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
+index c047598b09e0..6217f80702d2 100644
+--- a/arch/arm64/net/bpf_jit_comp.c
++++ b/arch/arm64/net/bpf_jit_comp.c
+@@ -1,7 +1,7 @@
+ /*
+ * BPF JIT compiler for ARM64
+ *
+- * Copyright (C) 2014 Zi Shen Lim <zlim.lnx@gmail.com>
++ * Copyright (C) 2014-2015 Zi Shen Lim <zlim.lnx@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -225,6 +225,17 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
+ u8 jmp_cond;
+ s32 jmp_offset;
+
++#define check_imm(bits, imm) do { \
++ if ((((imm) > 0) && ((imm) >> (bits))) || \
++ (((imm) < 0) && (~(imm) >> (bits)))) { \
++ pr_info("[%2d] imm=%d(0x%x) out of range\n", \
++ i, imm, imm); \
++ return -EINVAL; \
++ } \
++} while (0)
++#define check_imm19(imm) check_imm(19, imm)
++#define check_imm26(imm) check_imm(26, imm)
++
+ switch (code) {
+ /* dst = src */
+ case BPF_ALU | BPF_MOV | BPF_X:
+@@ -258,15 +269,33 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
+ break;
+ case BPF_ALU | BPF_DIV | BPF_X:
+ case BPF_ALU64 | BPF_DIV | BPF_X:
+- emit(A64_UDIV(is64, dst, dst, src), ctx);
+- break;
+ case BPF_ALU | BPF_MOD | BPF_X:
+ case BPF_ALU64 | BPF_MOD | BPF_X:
+- ctx->tmp_used = 1;
+- emit(A64_UDIV(is64, tmp, dst, src), ctx);
+- emit(A64_MUL(is64, tmp, tmp, src), ctx);
+- emit(A64_SUB(is64, dst, dst, tmp), ctx);
++ {
++ const u8 r0 = bpf2a64[BPF_REG_0];
++
++ /* if (src == 0) return 0 */
++ jmp_offset = 3; /* skip ahead to else path */
++ check_imm19(jmp_offset);
++ emit(A64_CBNZ(is64, src, jmp_offset), ctx);
++ emit(A64_MOVZ(1, r0, 0, 0), ctx);
++ jmp_offset = epilogue_offset(ctx);
++ check_imm26(jmp_offset);
++ emit(A64_B(jmp_offset), ctx);
++ /* else */
++ switch (BPF_OP(code)) {
++ case BPF_DIV:
++ emit(A64_UDIV(is64, dst, dst, src), ctx);
++ break;
++ case BPF_MOD:
++ ctx->tmp_used = 1;
++ emit(A64_UDIV(is64, tmp, dst, src), ctx);
++ emit(A64_MUL(is64, tmp, tmp, src), ctx);
++ emit(A64_SUB(is64, dst, dst, tmp), ctx);
++ break;
++ }
+ break;
++ }
+ case BPF_ALU | BPF_LSH | BPF_X:
+ case BPF_ALU64 | BPF_LSH | BPF_X:
+ emit(A64_LSLV(is64, dst, dst, src), ctx);
+@@ -393,17 +422,6 @@ emit_bswap_uxt:
+ emit(A64_ASR(is64, dst, dst, imm), ctx);
+ break;
+
+-#define check_imm(bits, imm) do { \
+- if ((((imm) > 0) && ((imm) >> (bits))) || \
+- (((imm) < 0) && (~(imm) >> (bits)))) { \
+- pr_info("[%2d] imm=%d(0x%x) out of range\n", \
+- i, imm, imm); \
+- return -EINVAL; \
+- } \
+-} while (0)
+-#define check_imm19(imm) check_imm(19, imm)
+-#define check_imm26(imm) check_imm(26, imm)
+-
+ /* JUMP off */
+ case BPF_JMP | BPF_JA:
+ jmp_offset = bpf2a64_offset(i + off, i, ctx);
+diff --git a/arch/mips/net/bpf_jit.c b/arch/mips/net/bpf_jit.c
+index e23fdf2a9c80..d6d27d51d131 100644
+--- a/arch/mips/net/bpf_jit.c
++++ b/arch/mips/net/bpf_jit.c
+@@ -556,19 +556,6 @@ static inline u16 align_sp(unsigned int num)
+ return num;
+ }
+
+-static bool is_load_to_a(u16 inst)
+-{
+- switch (inst) {
+- case BPF_LD | BPF_W | BPF_LEN:
+- case BPF_LD | BPF_W | BPF_ABS:
+- case BPF_LD | BPF_H | BPF_ABS:
+- case BPF_LD | BPF_B | BPF_ABS:
+- return true;
+- default:
+- return false;
+- }
+-}
+-
+ static void save_bpf_jit_regs(struct jit_ctx *ctx, unsigned offset)
+ {
+ int i = 0, real_off = 0;
+@@ -686,7 +673,6 @@ static unsigned int get_stack_depth(struct jit_ctx *ctx)
+
+ static void build_prologue(struct jit_ctx *ctx)
+ {
+- u16 first_inst = ctx->skf->insns[0].code;
+ int sp_off;
+
+ /* Calculate the total offset for the stack pointer */
+@@ -700,7 +686,7 @@ static void build_prologue(struct jit_ctx *ctx)
+ emit_jit_reg_move(r_X, r_zero, ctx);
+
+ /* Do not leak kernel data to userspace */
+- if ((first_inst != (BPF_RET | BPF_K)) && !(is_load_to_a(first_inst)))
++ if (bpf_needs_clear_a(&ctx->skf->insns[0]))
+ emit_jit_reg_move(r_A, r_zero, ctx);
+ }
+
+diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
+index 4434b54e1d87..78ae5552fdb8 100644
+--- a/arch/mn10300/Kconfig
++++ b/arch/mn10300/Kconfig
+@@ -1,6 +1,7 @@
+ config MN10300
+ def_bool y
+ select HAVE_OPROFILE
++ select HAVE_UID16
+ select GENERIC_IRQ_SHOW
+ select ARCH_WANT_IPC_PARSE_VERSION
+ select HAVE_ARCH_TRACEHOOK
+@@ -37,9 +38,6 @@ config HIGHMEM
+ config NUMA
+ def_bool n
+
+-config UID16
+- def_bool y
+-
+ config RWSEM_GENERIC_SPINLOCK
+ def_bool y
+
+diff --git a/arch/powerpc/include/asm/cmpxchg.h b/arch/powerpc/include/asm/cmpxchg.h
+index d463c68fe7f0..99897f6645c1 100644
+--- a/arch/powerpc/include/asm/cmpxchg.h
++++ b/arch/powerpc/include/asm/cmpxchg.h
+@@ -18,12 +18,12 @@ __xchg_u32(volatile void *p, unsigned long val)
+ unsigned long prev;
+
+ __asm__ __volatile__(
+- PPC_RELEASE_BARRIER
++ PPC_ATOMIC_ENTRY_BARRIER
+ "1: lwarx %0,0,%2 \n"
+ PPC405_ERR77(0,%2)
+ " stwcx. %3,0,%2 \n\
+ bne- 1b"
+- PPC_ACQUIRE_BARRIER
++ PPC_ATOMIC_EXIT_BARRIER
+ : "=&r" (prev), "+m" (*(volatile unsigned int *)p)
+ : "r" (p), "r" (val)
+ : "cc", "memory");
+@@ -61,12 +61,12 @@ __xchg_u64(volatile void *p, unsigned long val)
+ unsigned long prev;
+
+ __asm__ __volatile__(
+- PPC_RELEASE_BARRIER
++ PPC_ATOMIC_ENTRY_BARRIER
+ "1: ldarx %0,0,%2 \n"
+ PPC405_ERR77(0,%2)
+ " stdcx. %3,0,%2 \n\
+ bne- 1b"
+- PPC_ACQUIRE_BARRIER
++ PPC_ATOMIC_EXIT_BARRIER
+ : "=&r" (prev), "+m" (*(volatile unsigned long *)p)
+ : "r" (p), "r" (val)
+ : "cc", "memory");
+@@ -152,14 +152,14 @@ __cmpxchg_u32(volatile unsigned int *p, unsigned long old, unsigned long new)
+ unsigned int prev;
+
+ __asm__ __volatile__ (
+- PPC_RELEASE_BARRIER
++ PPC_ATOMIC_ENTRY_BARRIER
+ "1: lwarx %0,0,%2 # __cmpxchg_u32\n\
+ cmpw 0,%0,%3\n\
+ bne- 2f\n"
+ PPC405_ERR77(0,%2)
+ " stwcx. %4,0,%2\n\
+ bne- 1b"
+- PPC_ACQUIRE_BARRIER
++ PPC_ATOMIC_EXIT_BARRIER
+ "\n\
+ 2:"
+ : "=&r" (prev), "+m" (*p)
+@@ -198,13 +198,13 @@ __cmpxchg_u64(volatile unsigned long *p, unsigned long old, unsigned long new)
+ unsigned long prev;
+
+ __asm__ __volatile__ (
+- PPC_RELEASE_BARRIER
++ PPC_ATOMIC_ENTRY_BARRIER
+ "1: ldarx %0,0,%2 # __cmpxchg_u64\n\
+ cmpd 0,%0,%3\n\
+ bne- 2f\n\
+ stdcx. %4,0,%2\n\
+ bne- 1b"
+- PPC_ACQUIRE_BARRIER
++ PPC_ATOMIC_EXIT_BARRIER
+ "\n\
+ 2:"
+ : "=&r" (prev), "+m" (*p)
+diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
+index af56b5c6c81a..f4f99f01b746 100644
+--- a/arch/powerpc/include/asm/reg.h
++++ b/arch/powerpc/include/asm/reg.h
+@@ -108,6 +108,7 @@
+ #define MSR_TS_T __MASK(MSR_TS_T_LG) /* Transaction Transactional */
+ #define MSR_TS_MASK (MSR_TS_T | MSR_TS_S) /* Transaction State bits */
+ #define MSR_TM_ACTIVE(x) (((x) & MSR_TS_MASK) != 0) /* Transaction active? */
++#define MSR_TM_RESV(x) (((x) & MSR_TS_MASK) == MSR_TS_MASK) /* Reserved */
+ #define MSR_TM_TRANSACTIONAL(x) (((x) & MSR_TS_MASK) == MSR_TS_T)
+ #define MSR_TM_SUSPENDED(x) (((x) & MSR_TS_MASK) == MSR_TS_S)
+
+diff --git a/arch/powerpc/include/asm/synch.h b/arch/powerpc/include/asm/synch.h
+index e682a7143edb..c50868681f9e 100644
+--- a/arch/powerpc/include/asm/synch.h
++++ b/arch/powerpc/include/asm/synch.h
+@@ -44,7 +44,7 @@ static inline void isync(void)
+ MAKE_LWSYNC_SECTION_ENTRY(97, __lwsync_fixup);
+ #define PPC_ACQUIRE_BARRIER "\n" stringify_in_c(__PPC_ACQUIRE_BARRIER)
+ #define PPC_RELEASE_BARRIER stringify_in_c(LWSYNC) "\n"
+-#define PPC_ATOMIC_ENTRY_BARRIER "\n" stringify_in_c(LWSYNC) "\n"
++#define PPC_ATOMIC_ENTRY_BARRIER "\n" stringify_in_c(sync) "\n"
+ #define PPC_ATOMIC_EXIT_BARRIER "\n" stringify_in_c(sync) "\n"
+ #else
+ #define PPC_ACQUIRE_BARRIER
+diff --git a/arch/powerpc/include/uapi/asm/elf.h b/arch/powerpc/include/uapi/asm/elf.h
+index 59dad113897b..c2d21d11c2d2 100644
+--- a/arch/powerpc/include/uapi/asm/elf.h
++++ b/arch/powerpc/include/uapi/asm/elf.h
+@@ -295,6 +295,8 @@ do { \
+ #define R_PPC64_TLSLD 108
+ #define R_PPC64_TOCSAVE 109
+
++#define R_PPC64_ENTRY 118
++
+ #define R_PPC64_REL16 249
+ #define R_PPC64_REL16_LO 250
+ #define R_PPC64_REL16_HI 251
+diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
+index 68384514506b..59663af9315f 100644
+--- a/arch/powerpc/kernel/module_64.c
++++ b/arch/powerpc/kernel/module_64.c
+@@ -635,6 +635,33 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
+ */
+ break;
+
++ case R_PPC64_ENTRY:
++ /*
++ * Optimize ELFv2 large code model entry point if
++ * the TOC is within 2GB range of current location.
++ */
++ value = my_r2(sechdrs, me) - (unsigned long)location;
++ if (value + 0x80008000 > 0xffffffff)
++ break;
++ /*
++ * Check for the large code model prolog sequence:
++ * ld r2, ...(r12)
++ * add r2, r2, r12
++ */
++ if ((((uint32_t *)location)[0] & ~0xfffc)
++ != 0xe84c0000)
++ break;
++ if (((uint32_t *)location)[1] != 0x7c426214)
++ break;
++ /*
++ * If found, replace it with:
++ * addis r2, r12, (.TOC.-func)@ha
++ * addi r2, r12, (.TOC.-func)@l
++ */
++ ((uint32_t *)location)[0] = 0x3c4c0000 + PPC_HA(value);
++ ((uint32_t *)location)[1] = 0x38420000 + PPC_LO(value);
++ break;
++
+ case R_PPC64_REL16_HA:
+ /* Subtract location pointer */
+ value -= (unsigned long)location;
+diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
+index 0596373cd1c3..c8c8275765e7 100644
+--- a/arch/powerpc/kernel/process.c
++++ b/arch/powerpc/kernel/process.c
+@@ -551,6 +551,24 @@ static void tm_reclaim_thread(struct thread_struct *thr,
+ msr_diff &= MSR_FP | MSR_VEC | MSR_VSX | MSR_FE0 | MSR_FE1;
+ }
+
++ /*
++ * Use the current MSR TM suspended bit to track if we have
++ * checkpointed state outstanding.
++ * On signal delivery, we'd normally reclaim the checkpointed
++ * state to obtain stack pointer (see:get_tm_stackpointer()).
++ * This will then directly return to userspace without going
++ * through __switch_to(). However, if the stack frame is bad,
++ * we need to exit this thread which calls __switch_to() which
++ * will again attempt to reclaim the already saved tm state.
++ * Hence we need to check that we've not already reclaimed
++ * this state.
++ * We do this using the current MSR, rather tracking it in
++ * some specific thread_struct bit, as it has the additional
++ * benifit of checking for a potential TM bad thing exception.
++ */
++ if (!MSR_TM_SUSPENDED(mfmsr()))
++ return;
++
+ tm_reclaim(thr, thr->regs->msr, cause);
+
+ /* Having done the reclaim, we now have the checkpointed
+diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
+index da50e0c9c57e..7356c33dc897 100644
+--- a/arch/powerpc/kernel/signal_32.c
++++ b/arch/powerpc/kernel/signal_32.c
+@@ -875,6 +875,15 @@ static long restore_tm_user_regs(struct pt_regs *regs,
+ return 1;
+ #endif /* CONFIG_SPE */
+
++ /* Get the top half of the MSR from the user context */
++ if (__get_user(msr_hi, &tm_sr->mc_gregs[PT_MSR]))
++ return 1;
++ msr_hi <<= 32;
++ /* If TM bits are set to the reserved value, it's an invalid context */
++ if (MSR_TM_RESV(msr_hi))
++ return 1;
++ /* Pull in the MSR TM bits from the user context */
++ regs->msr = (regs->msr & ~MSR_TS_MASK) | (msr_hi & MSR_TS_MASK);
+ /* Now, recheckpoint. This loads up all of the checkpointed (older)
+ * registers, including FP and V[S]Rs. After recheckpointing, the
+ * transactional versions should be loaded.
+@@ -884,11 +893,6 @@ static long restore_tm_user_regs(struct pt_regs *regs,
+ current->thread.tm_texasr |= TEXASR_FS;
+ /* This loads the checkpointed FP/VEC state, if used */
+ tm_recheckpoint(¤t->thread, msr);
+- /* Get the top half of the MSR */
+- if (__get_user(msr_hi, &tm_sr->mc_gregs[PT_MSR]))
+- return 1;
+- /* Pull in MSR TM from user context */
+- regs->msr = (regs->msr & ~MSR_TS_MASK) | ((msr_hi<<32) & MSR_TS_MASK);
+
+ /* This loads the speculative FP/VEC state, if used */
+ if (msr & MSR_FP) {
+diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
+index c7c24d2e2bdb..164fd6474843 100644
+--- a/arch/powerpc/kernel/signal_64.c
++++ b/arch/powerpc/kernel/signal_64.c
+@@ -427,6 +427,10 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
+
+ /* get MSR separately, transfer the LE bit if doing signal return */
+ err |= __get_user(msr, &sc->gp_regs[PT_MSR]);
++ /* Don't allow reserved mode. */
++ if (MSR_TM_RESV(msr))
++ return -EINVAL;
++
+ /* pull in MSR TM from user context */
+ regs->msr = (regs->msr & ~MSR_TS_MASK) | (msr & MSR_TS_MASK);
+
+diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
+index f1e0e5522e3a..f5b3de7f7fa2 100644
+--- a/arch/powerpc/kvm/book3s_hv.c
++++ b/arch/powerpc/kvm/book3s_hv.c
+@@ -210,6 +210,12 @@ static void kvmppc_core_vcpu_put_hv(struct kvm_vcpu *vcpu)
+
+ static void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr)
+ {
++ /*
++ * Check for illegal transactional state bit combination
++ * and if we find it, force the TS field to a safe state.
++ */
++ if ((msr & MSR_TS_MASK) == MSR_TS_MASK)
++ msr &= ~MSR_TS_MASK;
+ vcpu->arch.shregs.msr = msr;
+ kvmppc_end_cede(vcpu);
+ }
+diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c
+index 17cea18a09d3..264c473c1b3c 100644
+--- a/arch/powerpc/net/bpf_jit_comp.c
++++ b/arch/powerpc/net/bpf_jit_comp.c
+@@ -78,18 +78,9 @@ static void bpf_jit_build_prologue(struct bpf_prog *fp, u32 *image,
+ PPC_LI(r_X, 0);
+ }
+
+- switch (filter[0].code) {
+- case BPF_RET | BPF_K:
+- case BPF_LD | BPF_W | BPF_LEN:
+- case BPF_LD | BPF_W | BPF_ABS:
+- case BPF_LD | BPF_H | BPF_ABS:
+- case BPF_LD | BPF_B | BPF_ABS:
+- /* first instruction sets A register (or is RET 'constant') */
+- break;
+- default:
+- /* make sure we dont leak kernel information to user */
++ /* make sure we dont leak kernel information to user */
++ if (bpf_needs_clear_a(&filter[0]))
+ PPC_LI(r_A, 0);
+- }
+ }
+
+ static void bpf_jit_build_epilogue(u32 *image, struct codegen_context *ctx)
+diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
+index 2241565b0739..b831a2ee32e9 100644
+--- a/arch/powerpc/platforms/powernv/opal.c
++++ b/arch/powerpc/platforms/powernv/opal.c
+@@ -358,7 +358,7 @@ static void opal_handle_message(void)
+
+ /* Sanity check */
+ if (type >= OPAL_MSG_TYPE_MAX) {
+- pr_warning("%s: Unknown message type: %u\n", __func__, type);
++ pr_warn_once("%s: Unknown message type: %u\n", __func__, type);
+ return;
+ }
+ opal_message_do_notify(type, (void *)&msg);
+diff --git a/arch/sparc/net/bpf_jit_comp.c b/arch/sparc/net/bpf_jit_comp.c
+index 7931eeeb649a..8109e92cd619 100644
+--- a/arch/sparc/net/bpf_jit_comp.c
++++ b/arch/sparc/net/bpf_jit_comp.c
+@@ -420,22 +420,9 @@ void bpf_jit_compile(struct bpf_prog *fp)
+ }
+ emit_reg_move(O7, r_saved_O7);
+
+- switch (filter[0].code) {
+- case BPF_RET | BPF_K:
+- case BPF_LD | BPF_W | BPF_LEN:
+- case BPF_LD | BPF_W | BPF_ABS:
+- case BPF_LD | BPF_H | BPF_ABS:
+- case BPF_LD | BPF_B | BPF_ABS:
+- /* The first instruction sets the A register (or is
+- * a "RET 'constant'")
+- */
+- break;
+- default:
+- /* Make sure we dont leak kernel information to the
+- * user.
+- */
++ /* Make sure we dont leak kernel information to the user. */
++ if (bpf_needs_clear_a(&filter[0]))
+ emit_clear(r_A); /* A = 0 */
+- }
+
+ for (i = 0; i < flen; i++) {
+ unsigned int K = filter[i].k;
+diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h
+index 4fa687a47a62..6b8d6e8cd449 100644
+--- a/arch/x86/include/asm/boot.h
++++ b/arch/x86/include/asm/boot.h
+@@ -27,7 +27,7 @@
+ #define BOOT_HEAP_SIZE 0x400000
+ #else /* !CONFIG_KERNEL_BZIP2 */
+
+-#define BOOT_HEAP_SIZE 0x8000
++#define BOOT_HEAP_SIZE 0x10000
+
+ #endif /* !CONFIG_KERNEL_BZIP2 */
+
+diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
+index 80d67dd80351..73e38f14ddeb 100644
+--- a/arch/x86/include/asm/mmu_context.h
++++ b/arch/x86/include/asm/mmu_context.h
+@@ -104,8 +104,36 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ #endif
+ cpumask_set_cpu(cpu, mm_cpumask(next));
+
+- /* Re-load page tables */
++ /*
++ * Re-load page tables.
++ *
++ * This logic has an ordering constraint:
++ *
++ * CPU 0: Write to a PTE for 'next'
++ * CPU 0: load bit 1 in mm_cpumask. if nonzero, send IPI.
++ * CPU 1: set bit 1 in next's mm_cpumask
++ * CPU 1: load from the PTE that CPU 0 writes (implicit)
++ *
++ * We need to prevent an outcome in which CPU 1 observes
++ * the new PTE value and CPU 0 observes bit 1 clear in
++ * mm_cpumask. (If that occurs, then the IPI will never
++ * be sent, and CPU 0's TLB will contain a stale entry.)
++ *
++ * The bad outcome can occur if either CPU's load is
++ * reordered before that CPU's store, so both CPUs must
++ * execute full barriers to prevent this from happening.
++ *
++ * Thus, switch_mm needs a full barrier between the
++ * store to mm_cpumask and any operation that could load
++ * from next->pgd. TLB fills are special and can happen
++ * due to instruction fetches or for no reason at all,
++ * and neither LOCK nor MFENCE orders them.
++ * Fortunately, load_cr3() is serializing and gives the
++ * ordering guarantee we need.
++ *
++ */
+ load_cr3(next->pgd);
++
+ trace_tlb_flush(TLB_FLUSH_ON_TASK_SWITCH, TLB_FLUSH_ALL);
+
+ /* Stop flush ipis for the previous mm */
+@@ -142,10 +170,14 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ * schedule, protecting us from simultaneous changes.
+ */
+ cpumask_set_cpu(cpu, mm_cpumask(next));
++
+ /*
+ * We were in lazy tlb mode and leave_mm disabled
+ * tlb flush IPI delivery. We must reload CR3
+ * to make sure to use no freed page tables.
++ *
++ * As above, load_cr3() is serializing and orders TLB
++ * fills with respect to the mm_cpumask write.
+ */
+ load_cr3(next->pgd);
+ trace_tlb_flush(TLB_FLUSH_ON_TASK_SWITCH, TLB_FLUSH_ALL);
+diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
+index 86db4bcd7ce5..0549ae3cb332 100644
+--- a/arch/x86/kernel/reboot.c
++++ b/arch/x86/kernel/reboot.c
+@@ -182,6 +182,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "iMac9,1"),
+ },
+ },
++ { /* Handle problems with rebooting on the iMac10,1. */
++ .callback = set_pci_reboot,
++ .ident = "Apple iMac10,1",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
++ DMI_MATCH(DMI_PRODUCT_NAME, "iMac10,1"),
++ },
++ },
+
+ /* ASRock */
+ { /* Handle problems with rebooting on ASRock Q1900DC-ITX */
+diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
+index e0fd5f47fbb9..5d2e2e9af1c4 100644
+--- a/arch/x86/kernel/signal.c
++++ b/arch/x86/kernel/signal.c
+@@ -667,12 +667,15 @@ handle_signal(struct ksignal *ksig, struct pt_regs *regs)
+ signal_setup_done(failed, ksig, stepping);
+ }
+
+-#ifdef CONFIG_X86_32
+-#define NR_restart_syscall __NR_restart_syscall
+-#else /* !CONFIG_X86_32 */
+-#define NR_restart_syscall \
+- test_thread_flag(TIF_IA32) ? __NR_ia32_restart_syscall : __NR_restart_syscall
+-#endif /* CONFIG_X86_32 */
++static inline unsigned long get_nr_restart_syscall(const struct pt_regs *regs)
++{
++#if defined(CONFIG_X86_32) || !defined(CONFIG_X86_64)
++ return __NR_restart_syscall;
++#else /* !CONFIG_X86_32 && CONFIG_X86_64 */
++ return test_thread_flag(TIF_IA32) ? __NR_ia32_restart_syscall :
++ __NR_restart_syscall | (regs->orig_ax & __X32_SYSCALL_BIT);
++#endif /* CONFIG_X86_32 || !CONFIG_X86_64 */
++}
+
+ /*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+@@ -701,7 +704,7 @@ static void do_signal(struct pt_regs *regs)
+ break;
+
+ case -ERESTART_RESTARTBLOCK:
+- regs->ax = NR_restart_syscall;
++ regs->ax = get_nr_restart_syscall(regs);
+ regs->ip -= 2;
+ break;
+ }
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 454ccb082e18..0d039cd268a8 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -1106,6 +1106,7 @@ static void init_vmcb(struct vcpu_svm *svm)
+ set_exception_intercept(svm, UD_VECTOR);
+ set_exception_intercept(svm, MC_VECTOR);
+ set_exception_intercept(svm, AC_VECTOR);
++ set_exception_intercept(svm, DB_VECTOR);
+
+ set_intercept(svm, INTERCEPT_INTR);
+ set_intercept(svm, INTERCEPT_NMI);
+@@ -1638,20 +1639,13 @@ static void svm_set_segment(struct kvm_vcpu *vcpu,
+ mark_dirty(svm->vmcb, VMCB_SEG);
+ }
+
+-static void update_db_bp_intercept(struct kvm_vcpu *vcpu)
++static void update_bp_intercept(struct kvm_vcpu *vcpu)
+ {
+ struct vcpu_svm *svm = to_svm(vcpu);
+
+- clr_exception_intercept(svm, DB_VECTOR);
+ clr_exception_intercept(svm, BP_VECTOR);
+
+- if (svm->nmi_singlestep)
+- set_exception_intercept(svm, DB_VECTOR);
+-
+ if (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) {
+- if (vcpu->guest_debug &
+- (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
+- set_exception_intercept(svm, DB_VECTOR);
+ if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
+ set_exception_intercept(svm, BP_VECTOR);
+ } else
+@@ -1757,7 +1751,6 @@ static int db_interception(struct vcpu_svm *svm)
+ if (!(svm->vcpu.guest_debug & KVM_GUESTDBG_SINGLESTEP))
+ svm->vmcb->save.rflags &=
+ ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
+- update_db_bp_intercept(&svm->vcpu);
+ }
+
+ if (svm->vcpu.guest_debug &
+@@ -3751,7 +3744,6 @@ static void enable_nmi_window(struct kvm_vcpu *vcpu)
+ */
+ svm->nmi_singlestep = true;
+ svm->vmcb->save.rflags |= (X86_EFLAGS_TF | X86_EFLAGS_RF);
+- update_db_bp_intercept(vcpu);
+ }
+
+ static int svm_set_tss_addr(struct kvm *kvm, unsigned int addr)
+@@ -4367,7 +4359,7 @@ static struct kvm_x86_ops svm_x86_ops = {
+ .vcpu_load = svm_vcpu_load,
+ .vcpu_put = svm_vcpu_put,
+
+- .update_db_bp_intercept = update_db_bp_intercept,
++ .update_db_bp_intercept = update_bp_intercept,
+ .get_msr = svm_get_msr,
+ .set_msr = svm_set_msr,
+ .get_segment_base = svm_get_segment_base,
+diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
+index 7c7bc8bef21f..21dda139eb3a 100644
+--- a/arch/x86/kvm/trace.h
++++ b/arch/x86/kvm/trace.h
+@@ -250,7 +250,7 @@ TRACE_EVENT(kvm_inj_virq,
+ #define kvm_trace_sym_exc \
+ EXS(DE), EXS(DB), EXS(BP), EXS(OF), EXS(BR), EXS(UD), EXS(NM), \
+ EXS(DF), EXS(TS), EXS(NP), EXS(SS), EXS(GP), EXS(PF), \
+- EXS(MF), EXS(MC)
++ EXS(MF), EXS(AC), EXS(MC)
+
+ /*
+ * Tracepoint for kvm interrupt injection:
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index a243854c35d5..945f9e13f1aa 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -3652,20 +3652,21 @@ static int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+ if (!is_paging(vcpu)) {
+ hw_cr4 &= ~X86_CR4_PAE;
+ hw_cr4 |= X86_CR4_PSE;
+- /*
+- * SMEP/SMAP is disabled if CPU is in non-paging mode
+- * in hardware. However KVM always uses paging mode to
+- * emulate guest non-paging mode with TDP.
+- * To emulate this behavior, SMEP/SMAP needs to be
+- * manually disabled when guest switches to non-paging
+- * mode.
+- */
+- hw_cr4 &= ~(X86_CR4_SMEP | X86_CR4_SMAP);
+ } else if (!(cr4 & X86_CR4_PAE)) {
+ hw_cr4 &= ~X86_CR4_PAE;
+ }
+ }
+
++ if (!enable_unrestricted_guest && !is_paging(vcpu))
++ /*
++ * SMEP/SMAP is disabled if CPU is in non-paging mode in
++ * hardware. However KVM always uses paging mode without
++ * unrestricted guest.
++ * To emulate this behavior, SMEP/SMAP needs to be manually
++ * disabled when guest switches to non-paging mode.
++ */
++ hw_cr4 &= ~(X86_CR4_SMEP | X86_CR4_SMAP);
++
+ vmcs_writel(CR4_READ_SHADOW, cr4);
+ vmcs_writel(GUEST_CR4, hw_cr4);
+ return 0;
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 47a32f743a91..fed4c84eac44 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -940,7 +940,7 @@ static u32 msrs_to_save[] = {
+ MSR_CSTAR, MSR_KERNEL_GS_BASE, MSR_SYSCALL_MASK, MSR_LSTAR,
+ #endif
+ MSR_IA32_TSC, MSR_IA32_CR_PAT, MSR_VM_HSAVE_PA,
+- MSR_IA32_FEATURE_CONTROL, MSR_IA32_BNDCFGS
++ MSR_IA32_FEATURE_CONTROL, MSR_IA32_BNDCFGS, MSR_TSC_AUX,
+ };
+
+ static unsigned num_msrs_to_save;
+@@ -4117,16 +4117,17 @@ static void kvm_init_msr_list(void)
+
+ /*
+ * Even MSRs that are valid in the host may not be exposed
+- * to the guests in some cases. We could work around this
+- * in VMX with the generic MSR save/load machinery, but it
+- * is not really worthwhile since it will really only
+- * happen with nested virtualization.
++ * to the guests in some cases.
+ */
+ switch (msrs_to_save[i]) {
+ case MSR_IA32_BNDCFGS:
+ if (!kvm_x86_ops->mpx_supported())
+ continue;
+ break;
++ case MSR_TSC_AUX:
++ if (!kvm_x86_ops->rdtscp_supported())
++ continue;
++ break;
+ default:
+ break;
+ }
+diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c
+index 4d1c11c07fe1..f738c61bc891 100644
+--- a/arch/x86/mm/mpx.c
++++ b/arch/x86/mm/mpx.c
+@@ -120,19 +120,19 @@ static int get_reg_offset(struct insn *insn, struct pt_regs *regs,
+ switch (type) {
+ case REG_TYPE_RM:
+ regno = X86_MODRM_RM(insn->modrm.value);
+- if (X86_REX_B(insn->rex_prefix.value) == 1)
++ if (X86_REX_B(insn->rex_prefix.value))
+ regno += 8;
+ break;
+
+ case REG_TYPE_INDEX:
+ regno = X86_SIB_INDEX(insn->sib.value);
+- if (X86_REX_X(insn->rex_prefix.value) == 1)
++ if (X86_REX_X(insn->rex_prefix.value))
+ regno += 8;
+ break;
+
+ case REG_TYPE_BASE:
+ regno = X86_SIB_BASE(insn->sib.value);
+- if (X86_REX_B(insn->rex_prefix.value) == 1)
++ if (X86_REX_B(insn->rex_prefix.value))
+ regno += 8;
+ break;
+
+diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
+index 90b924acd982..061e0114005e 100644
+--- a/arch/x86/mm/tlb.c
++++ b/arch/x86/mm/tlb.c
+@@ -160,7 +160,10 @@ void flush_tlb_current_task(void)
+ preempt_disable();
+
+ count_vm_tlb_event(NR_TLB_LOCAL_FLUSH_ALL);
++
++ /* This is an implicit full barrier that synchronizes with switch_mm. */
+ local_flush_tlb();
++
+ trace_tlb_flush(TLB_LOCAL_SHOOTDOWN, TLB_FLUSH_ALL);
+ if (cpumask_any_but(mm_cpumask(mm), smp_processor_id()) < nr_cpu_ids)
+ flush_tlb_others(mm_cpumask(mm), mm, 0UL, TLB_FLUSH_ALL);
+@@ -187,17 +190,29 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
+ unsigned long base_pages_to_flush = TLB_FLUSH_ALL;
+
+ preempt_disable();
+- if (current->active_mm != mm)
++ if (current->active_mm != mm) {
++ /* Synchronize with switch_mm. */
++ smp_mb();
++
+ goto out;
++ }
+
+ if (!current->mm) {
+ leave_mm(smp_processor_id());
++
++ /* Synchronize with switch_mm. */
++ smp_mb();
++
+ goto out;
+ }
+
+ if ((end != TLB_FLUSH_ALL) && !(vmflag & VM_HUGETLB))
+ base_pages_to_flush = (end - start) >> PAGE_SHIFT;
+
++ /*
++ * Both branches below are implicit full barriers (MOV to CR or
++ * INVLPG) that synchronize with switch_mm.
++ */
+ if (base_pages_to_flush > tlb_single_page_flush_ceiling) {
+ base_pages_to_flush = TLB_FLUSH_ALL;
+ count_vm_tlb_event(NR_TLB_LOCAL_FLUSH_ALL);
+@@ -227,10 +242,18 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long start)
+ preempt_disable();
+
+ if (current->active_mm == mm) {
+- if (current->mm)
++ if (current->mm) {
++ /*
++ * Implicit full barrier (INVLPG) that synchronizes
++ * with switch_mm.
++ */
+ __flush_tlb_one(start);
+- else
++ } else {
+ leave_mm(smp_processor_id());
++
++ /* Synchronize with switch_mm. */
++ smp_mb();
++ }
+ }
+
+ if (cpumask_any_but(mm_cpumask(mm), smp_processor_id()) < nr_cpu_ids)
+diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
+index 53b4c0811f4f..6d3415144dab 100644
+--- a/arch/x86/xen/suspend.c
++++ b/arch/x86/xen/suspend.c
+@@ -32,7 +32,8 @@ static void xen_hvm_post_suspend(int suspend_cancelled)
+ {
+ #ifdef CONFIG_XEN_PVHVM
+ int cpu;
+- xen_hvm_init_shared_info();
++ if (!suspend_cancelled)
++ xen_hvm_init_shared_info();
+ xen_callback_vector();
+ xen_unplug_emulated_devices();
+ if (xen_feature(XENFEAT_hvm_safe_pvclock)) {
+diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
+index 8a45e92ff60c..05222706dc66 100644
+--- a/drivers/char/ipmi/ipmi_si_intf.c
++++ b/drivers/char/ipmi/ipmi_si_intf.c
+@@ -404,18 +404,42 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info)
+ return rv;
+ }
+
+-static void start_check_enables(struct smi_info *smi_info)
++static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val)
++{
++ smi_info->last_timeout_jiffies = jiffies;
++ mod_timer(&smi_info->si_timer, new_val);
++ smi_info->timer_running = true;
++}
++
++/*
++ * Start a new message and (re)start the timer and thread.
++ */
++static void start_new_msg(struct smi_info *smi_info, unsigned char *msg,
++ unsigned int size)
++{
++ smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES);
++
++ if (smi_info->thread)
++ wake_up_process(smi_info->thread);
++
++ smi_info->handlers->start_transaction(smi_info->si_sm, msg, size);
++}
++
++static void start_check_enables(struct smi_info *smi_info, bool start_timer)
+ {
+ unsigned char msg[2];
+
+ msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
+ msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD;
+
+- smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2);
++ if (start_timer)
++ start_new_msg(smi_info, msg, 2);
++ else
++ smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2);
+ smi_info->si_state = SI_CHECKING_ENABLES;
+ }
+
+-static void start_clear_flags(struct smi_info *smi_info)
++static void start_clear_flags(struct smi_info *smi_info, bool start_timer)
+ {
+ unsigned char msg[3];
+
+@@ -424,7 +448,10 @@ static void start_clear_flags(struct smi_info *smi_info)
+ msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD;
+ msg[2] = WDT_PRE_TIMEOUT_INT;
+
+- smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3);
++ if (start_timer)
++ start_new_msg(smi_info, msg, 3);
++ else
++ smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3);
+ smi_info->si_state = SI_CLEARING_FLAGS;
+ }
+
+@@ -434,10 +461,8 @@ static void start_getting_msg_queue(struct smi_info *smi_info)
+ smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD;
+ smi_info->curr_msg->data_size = 2;
+
+- smi_info->handlers->start_transaction(
+- smi_info->si_sm,
+- smi_info->curr_msg->data,
+- smi_info->curr_msg->data_size);
++ start_new_msg(smi_info, smi_info->curr_msg->data,
++ smi_info->curr_msg->data_size);
+ smi_info->si_state = SI_GETTING_MESSAGES;
+ }
+
+@@ -447,20 +472,11 @@ static void start_getting_events(struct smi_info *smi_info)
+ smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD;
+ smi_info->curr_msg->data_size = 2;
+
+- smi_info->handlers->start_transaction(
+- smi_info->si_sm,
+- smi_info->curr_msg->data,
+- smi_info->curr_msg->data_size);
++ start_new_msg(smi_info, smi_info->curr_msg->data,
++ smi_info->curr_msg->data_size);
+ smi_info->si_state = SI_GETTING_EVENTS;
+ }
+
+-static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val)
+-{
+- smi_info->last_timeout_jiffies = jiffies;
+- mod_timer(&smi_info->si_timer, new_val);
+- smi_info->timer_running = true;
+-}
+-
+ /*
+ * When we have a situtaion where we run out of memory and cannot
+ * allocate messages, we just leave them in the BMC and run the system
+@@ -470,11 +486,11 @@ static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val)
+ * Note that we cannot just use disable_irq(), since the interrupt may
+ * be shared.
+ */
+-static inline bool disable_si_irq(struct smi_info *smi_info)
++static inline bool disable_si_irq(struct smi_info *smi_info, bool start_timer)
+ {
+ if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
+ smi_info->interrupt_disabled = true;
+- start_check_enables(smi_info);
++ start_check_enables(smi_info, start_timer);
+ return true;
+ }
+ return false;
+@@ -484,7 +500,7 @@ static inline bool enable_si_irq(struct smi_info *smi_info)
+ {
+ if ((smi_info->irq) && (smi_info->interrupt_disabled)) {
+ smi_info->interrupt_disabled = false;
+- start_check_enables(smi_info);
++ start_check_enables(smi_info, true);
+ return true;
+ }
+ return false;
+@@ -502,7 +518,7 @@ static struct ipmi_smi_msg *alloc_msg_handle_irq(struct smi_info *smi_info)
+
+ msg = ipmi_alloc_smi_msg();
+ if (!msg) {
+- if (!disable_si_irq(smi_info))
++ if (!disable_si_irq(smi_info, true))
+ smi_info->si_state = SI_NORMAL;
+ } else if (enable_si_irq(smi_info)) {
+ ipmi_free_smi_msg(msg);
+@@ -518,7 +534,7 @@ static void handle_flags(struct smi_info *smi_info)
+ /* Watchdog pre-timeout */
+ smi_inc_stat(smi_info, watchdog_pretimeouts);
+
+- start_clear_flags(smi_info);
++ start_clear_flags(smi_info, true);
+ smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT;
+ if (smi_info->intf)
+ ipmi_smi_watchdog_pretimeout(smi_info->intf);
+@@ -870,8 +886,7 @@ static enum si_sm_result smi_event_handler(struct smi_info *smi_info,
+ msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
+ msg[1] = IPMI_GET_MSG_FLAGS_CMD;
+
+- smi_info->handlers->start_transaction(
+- smi_info->si_sm, msg, 2);
++ start_new_msg(smi_info, msg, 2);
+ smi_info->si_state = SI_GETTING_FLAGS;
+ goto restart;
+ }
+@@ -901,7 +916,7 @@ static enum si_sm_result smi_event_handler(struct smi_info *smi_info,
+ * disable and messages disabled.
+ */
+ if (smi_info->supports_event_msg_buff || smi_info->irq) {
+- start_check_enables(smi_info);
++ start_check_enables(smi_info, true);
+ } else {
+ smi_info->curr_msg = alloc_msg_handle_irq(smi_info);
+ if (!smi_info->curr_msg)
+@@ -1203,14 +1218,14 @@ static int smi_start_processing(void *send_info,
+
+ new_smi->intf = intf;
+
+- /* Try to claim any interrupts. */
+- if (new_smi->irq_setup)
+- new_smi->irq_setup(new_smi);
+-
+ /* Set up the timer that drives the interface. */
+ setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi);
+ smi_mod_timer(new_smi, jiffies + SI_TIMEOUT_JIFFIES);
+
++ /* Try to claim any interrupts. */
++ if (new_smi->irq_setup)
++ new_smi->irq_setup(new_smi);
++
+ /*
+ * Check if the user forcefully enabled the daemon.
+ */
+@@ -3515,7 +3530,7 @@ static int try_smi_init(struct smi_info *new_smi)
+ * Start clearing the flags before we enable interrupts or the
+ * timer to avoid racing with the timer.
+ */
+- start_clear_flags(new_smi);
++ start_clear_flags(new_smi, false);
+
+ /*
+ * IRQ is defined to be set when non-zero. req_events will
+@@ -3817,7 +3832,7 @@ static void cleanup_one_si(struct smi_info *to_clean)
+ poll(to_clean);
+ schedule_timeout_uninterruptible(1);
+ }
+- disable_si_irq(to_clean);
++ disable_si_irq(to_clean, false);
+ while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {
+ poll(to_clean);
+ schedule_timeout_uninterruptible(1);
+diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
+index 30f522848c73..c19e7fc717c3 100644
+--- a/drivers/connector/connector.c
++++ b/drivers/connector/connector.c
+@@ -178,26 +178,21 @@ static int cn_call_callback(struct sk_buff *skb)
+ *
+ * It checks skb, netlink header and msg sizes, and calls callback helper.
+ */
+-static void cn_rx_skb(struct sk_buff *__skb)
++static void cn_rx_skb(struct sk_buff *skb)
+ {
+ struct nlmsghdr *nlh;
+- struct sk_buff *skb;
+ int len, err;
+
+- skb = skb_get(__skb);
+-
+ if (skb->len >= NLMSG_HDRLEN) {
+ nlh = nlmsg_hdr(skb);
+ len = nlmsg_len(nlh);
+
+ if (len < (int)sizeof(struct cn_msg) ||
+ skb->len < nlh->nlmsg_len ||
+- len > CONNECTOR_MAX_MSG_SIZE) {
+- kfree_skb(skb);
++ len > CONNECTOR_MAX_MSG_SIZE)
+ return;
+- }
+
+- err = cn_call_callback(skb);
++ err = cn_call_callback(skb_get(skb));
+ if (err < 0)
+ kfree_skb(skb);
+ }
+diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
+index 722a925795a2..9ce9dfeb1258 100644
+--- a/drivers/hid/hid-core.c
++++ b/drivers/hid/hid-core.c
+@@ -1589,7 +1589,7 @@ int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
+ "Multi-Axis Controller"
+ };
+ const char *type, *bus;
+- char buf[64];
++ char buf[64] = "";
+ unsigned int i;
+ int len;
+ int ret;
+diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
+index 8b0178db6a04..b85a8614c128 100644
+--- a/drivers/iommu/intel-iommu.c
++++ b/drivers/iommu/intel-iommu.c
+@@ -3928,14 +3928,17 @@ int dmar_find_matched_atsr_unit(struct pci_dev *dev)
+ dev = pci_physfn(dev);
+ for (bus = dev->bus; bus; bus = bus->parent) {
+ bridge = bus->self;
+- if (!bridge || !pci_is_pcie(bridge) ||
++ /* If it's an integrated device, allow ATS */
++ if (!bridge)
++ return 1;
++ /* Connected via non-PCIe: no ATS */
++ if (!pci_is_pcie(bridge) ||
+ pci_pcie_type(bridge) == PCI_EXP_TYPE_PCI_BRIDGE)
+ return 0;
++ /* If we found the root port, look it up in the ATSR */
+ if (pci_pcie_type(bridge) == PCI_EXP_TYPE_ROOT_PORT)
+ break;
+ }
+- if (!bridge)
+- return 0;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(atsru, &dmar_atsr_units, list) {
+diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
+index c4198fa490bf..9c1e8adaf4fc 100644
+--- a/drivers/isdn/i4l/isdn_ppp.c
++++ b/drivers/isdn/i4l/isdn_ppp.c
+@@ -301,6 +301,8 @@ isdn_ppp_open(int min, struct file *file)
+ is->compflags = 0;
+
+ is->reset = isdn_ppp_ccp_reset_alloc(is);
++ if (!is->reset)
++ return -ENOMEM;
+
+ is->lp = NULL;
+ is->mp_seqno = 0; /* MP sequence number */
+@@ -320,6 +322,10 @@ isdn_ppp_open(int min, struct file *file)
+ * VJ header compression init
+ */
+ is->slcomp = slhc_init(16, 16); /* not necessary for 2. link in bundle */
++ if (IS_ERR(is->slcomp)) {
++ isdn_ppp_ccp_reset_free(is);
++ return PTR_ERR(is->slcomp);
++ }
+ #endif
+ #ifdef CONFIG_IPPP_FILTER
+ is->pass_filter = NULL;
+@@ -567,10 +573,8 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
+ is->maxcid = val;
+ #ifdef CONFIG_ISDN_PPP_VJ
+ sltmp = slhc_init(16, val);
+- if (!sltmp) {
+- printk(KERN_ERR "ippp, can't realloc slhc struct\n");
+- return -ENOMEM;
+- }
++ if (IS_ERR(sltmp))
++ return PTR_ERR(sltmp);
+ if (is->slcomp)
+ slhc_free(is->slcomp);
+ is->slcomp = sltmp;
+diff --git a/drivers/media/platform/vivid/vivid-osd.c b/drivers/media/platform/vivid/vivid-osd.c
+index 084d346fb4c4..e15eef6a94e5 100644
+--- a/drivers/media/platform/vivid/vivid-osd.c
++++ b/drivers/media/platform/vivid/vivid-osd.c
+@@ -85,6 +85,7 @@ static int vivid_fb_ioctl(struct fb_info *info, unsigned cmd, unsigned long arg)
+ case FBIOGET_VBLANK: {
+ struct fb_vblank vblank;
+
++ memset(&vblank, 0, sizeof(vblank));
+ vblank.flags = FB_VBLANK_HAVE_COUNT | FB_VBLANK_HAVE_VCOUNT |
+ FB_VBLANK_HAVE_VSYNC;
+ vblank.count = 0;
+diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
+index 4069234abed5..a50750ce511d 100644
+--- a/drivers/media/usb/airspy/airspy.c
++++ b/drivers/media/usb/airspy/airspy.c
+@@ -132,7 +132,7 @@ struct airspy {
+ int urbs_submitted;
+
+ /* USB control message buffer */
+- #define BUF_SIZE 24
++ #define BUF_SIZE 128
+ u8 buf[BUF_SIZE];
+
+ /* Current configuration */
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index 16d87bf8ac3c..72ba774df7a7 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -1194,7 +1194,6 @@ static int bond_master_upper_dev_link(struct net_device *bond_dev,
+ err = netdev_master_upper_dev_link_private(slave_dev, bond_dev, slave);
+ if (err)
+ return err;
+- slave_dev->flags |= IFF_SLAVE;
+ rtmsg_ifinfo(RTM_NEWLINK, slave_dev, IFF_SLAVE, GFP_KERNEL);
+ return 0;
+ }
+@@ -1452,6 +1451,9 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
+ }
+ }
+
++ /* set slave flag before open to prevent IPv6 addrconf */
++ slave_dev->flags |= IFF_SLAVE;
++
+ /* open the slave since the application closed it */
+ res = dev_open(slave_dev);
+ if (res) {
+@@ -1712,6 +1714,7 @@ err_close:
+ dev_close(slave_dev);
+
+ err_restore_mac:
++ slave_dev->flags &= ~IFF_SLAVE;
+ if (!bond->params.fail_over_mac ||
+ BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) {
+ /* XXX TODO - fom follow mode needs to change master's
+diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
+index 9d15566521a7..cfe49a07c7c1 100644
+--- a/drivers/net/ppp/ppp_generic.c
++++ b/drivers/net/ppp/ppp_generic.c
+@@ -715,10 +715,8 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ val &= 0xffff;
+ }
+ vj = slhc_init(val2+1, val+1);
+- if (!vj) {
+- netdev_err(ppp->dev,
+- "PPP: no memory (VJ compressor)\n");
+- err = -ENOMEM;
++ if (IS_ERR(vj)) {
++ err = PTR_ERR(vj);
+ break;
+ }
+ ppp_lock(ppp);
+diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
+index 079f7adfcde5..27ed25252aac 100644
+--- a/drivers/net/slip/slhc.c
++++ b/drivers/net/slip/slhc.c
+@@ -84,8 +84,9 @@ static long decode(unsigned char **cpp);
+ static unsigned char * put16(unsigned char *cp, unsigned short x);
+ static unsigned short pull16(unsigned char **cpp);
+
+-/* Initialize compression data structure
++/* Allocate compression data structure
+ * slots must be in range 0 to 255 (zero meaning no compression)
++ * Returns pointer to structure or ERR_PTR() on error.
+ */
+ struct slcompress *
+ slhc_init(int rslots, int tslots)
+@@ -94,11 +95,14 @@ slhc_init(int rslots, int tslots)
+ register struct cstate *ts;
+ struct slcompress *comp;
+
++ if (rslots < 0 || rslots > 255 || tslots < 0 || tslots > 255)
++ return ERR_PTR(-EINVAL);
++
+ comp = kzalloc(sizeof(struct slcompress), GFP_KERNEL);
+ if (! comp)
+ goto out_fail;
+
+- if ( rslots > 0 && rslots < 256 ) {
++ if (rslots > 0) {
+ size_t rsize = rslots * sizeof(struct cstate);
+ comp->rstate = kzalloc(rsize, GFP_KERNEL);
+ if (! comp->rstate)
+@@ -106,7 +110,7 @@ slhc_init(int rslots, int tslots)
+ comp->rslot_limit = rslots - 1;
+ }
+
+- if ( tslots > 0 && tslots < 256 ) {
++ if (tslots > 0) {
+ size_t tsize = tslots * sizeof(struct cstate);
+ comp->tstate = kzalloc(tsize, GFP_KERNEL);
+ if (! comp->tstate)
+@@ -141,7 +145,7 @@ out_free2:
+ out_free:
+ kfree(comp);
+ out_fail:
+- return NULL;
++ return ERR_PTR(-ENOMEM);
+ }
+
+
+diff --git a/drivers/net/slip/slip.c b/drivers/net/slip/slip.c
+index 05387b1e2e95..a17d86a57734 100644
+--- a/drivers/net/slip/slip.c
++++ b/drivers/net/slip/slip.c
+@@ -164,7 +164,7 @@ static int sl_alloc_bufs(struct slip *sl, int mtu)
+ if (cbuff == NULL)
+ goto err_exit;
+ slcomp = slhc_init(16, 16);
+- if (slcomp == NULL)
++ if (IS_ERR(slcomp))
+ goto err_exit;
+ #endif
+ spin_lock_bh(&sl->lock);
+diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
+index 6928448f6b7f..2b45d0168c3c 100644
+--- a/drivers/net/team/team.c
++++ b/drivers/net/team/team.c
+@@ -1845,10 +1845,10 @@ static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
+ struct team *team = netdev_priv(dev);
+ struct team_port *port;
+
+- rcu_read_lock();
+- list_for_each_entry_rcu(port, &team->port_list, list)
++ mutex_lock(&team->lock);
++ list_for_each_entry(port, &team->port_list, list)
+ vlan_vid_del(port->dev, proto, vid);
+- rcu_read_unlock();
++ mutex_unlock(&team->lock);
+
+ return 0;
+ }
+diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c
+index e4b7a47a825c..5efaa9ab5af5 100644
+--- a/drivers/net/usb/cdc_mbim.c
++++ b/drivers/net/usb/cdc_mbim.c
+@@ -100,7 +100,7 @@ static const struct net_device_ops cdc_mbim_netdev_ops = {
+ .ndo_stop = usbnet_stop,
+ .ndo_start_xmit = usbnet_start_xmit,
+ .ndo_tx_timeout = usbnet_tx_timeout,
+- .ndo_change_mtu = usbnet_change_mtu,
++ .ndo_change_mtu = cdc_ncm_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_vlan_rx_add_vid = cdc_mbim_rx_add_vid,
+diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
+index 8067b8fbb0ee..0b481c30979b 100644
+--- a/drivers/net/usb/cdc_ncm.c
++++ b/drivers/net/usb/cdc_ncm.c
+@@ -41,6 +41,7 @@
+ #include <linux/module.h>
+ #include <linux/netdevice.h>
+ #include <linux/ctype.h>
++#include <linux/etherdevice.h>
+ #include <linux/ethtool.h>
+ #include <linux/workqueue.h>
+ #include <linux/mii.h>
+@@ -687,6 +688,33 @@ static void cdc_ncm_free(struct cdc_ncm_ctx *ctx)
+ kfree(ctx);
+ }
+
++/* we need to override the usbnet change_mtu ndo for two reasons:
++ * - respect the negotiated maximum datagram size
++ * - avoid unwanted changes to rx and tx buffers
++ */
++int cdc_ncm_change_mtu(struct net_device *net, int new_mtu)
++{
++ struct usbnet *dev = netdev_priv(net);
++ struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0];
++ int maxmtu = ctx->max_datagram_size - cdc_ncm_eth_hlen(dev);
++
++ if (new_mtu <= 0 || new_mtu > maxmtu)
++ return -EINVAL;
++ net->mtu = new_mtu;
++ return 0;
++}
++EXPORT_SYMBOL_GPL(cdc_ncm_change_mtu);
++
++static const struct net_device_ops cdc_ncm_netdev_ops = {
++ .ndo_open = usbnet_open,
++ .ndo_stop = usbnet_stop,
++ .ndo_start_xmit = usbnet_start_xmit,
++ .ndo_tx_timeout = usbnet_tx_timeout,
++ .ndo_change_mtu = cdc_ncm_change_mtu,
++ .ndo_set_mac_address = eth_mac_addr,
++ .ndo_validate_addr = eth_validate_addr,
++};
++
+ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting)
+ {
+ const struct usb_cdc_union_desc *union_desc = NULL;
+@@ -861,6 +889,9 @@ advance:
+ /* add our sysfs attrs */
+ dev->net->sysfs_groups[0] = &cdc_ncm_sysfs_attr_group;
+
++ /* must handle MTU changes */
++ dev->net->netdev_ops = &cdc_ncm_netdev_ops;
++
+ return 0;
+
+ error2:
+diff --git a/drivers/net/veth.c b/drivers/net/veth.c
+index c8186ffda1a3..2e61a799f32a 100644
+--- a/drivers/net/veth.c
++++ b/drivers/net/veth.c
+@@ -117,12 +117,6 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
+ kfree_skb(skb);
+ goto drop;
+ }
+- /* don't change ip_summed == CHECKSUM_PARTIAL, as that
+- * will cause bad checksum on forwarded packets
+- */
+- if (skb->ip_summed == CHECKSUM_NONE &&
+- rcv->features & NETIF_F_RXCSUM)
+- skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ if (likely(dev_forward_skb(rcv, skb) == NET_RX_SUCCESS)) {
+ struct pcpu_vstats *stats = this_cpu_ptr(dev->vstats);
+diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
+index 0085b8df83e2..940f78e41993 100644
+--- a/drivers/net/vxlan.c
++++ b/drivers/net/vxlan.c
+@@ -2581,7 +2581,7 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
+ struct nlattr *tb[], struct nlattr *data[])
+ {
+ struct vxlan_net *vn = net_generic(src_net, vxlan_net_id);
+- struct vxlan_dev *vxlan = netdev_priv(dev);
++ struct vxlan_dev *vxlan = netdev_priv(dev), *tmp;
+ struct vxlan_rdst *dst = &vxlan->default_dst;
+ __u32 vni;
+ int err;
+@@ -2714,9 +2714,13 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
+ if (data[IFLA_VXLAN_REMCSUM_NOPARTIAL])
+ vxlan->flags |= VXLAN_F_REMCSUM_NOPARTIAL;
+
+- if (vxlan_find_vni(src_net, vni, use_ipv6 ? AF_INET6 : AF_INET,
+- vxlan->dst_port, vxlan->flags)) {
+- pr_info("duplicate VNI %u\n", vni);
++ list_for_each_entry(tmp, &vn->vxlan_list, next) {
++ if (tmp->default_dst.remote_vni == vni &&
++ (tmp->default_dst.remote_ip.sa.sa_family == AF_INET6 ||
++ tmp->saddr.sa.sa_family == AF_INET6) == use_ipv6 &&
++ tmp->dst_port == vxlan->dst_port &&
++ (tmp->flags & VXLAN_F_RCV_FLAGS) ==
++ (vxlan->flags & VXLAN_F_RCV_FLAGS))
+ return -EEXIST;
+ }
+
+diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
+index 0866c5dfdf87..5e5b6184e720 100644
+--- a/drivers/net/xen-netback/netback.c
++++ b/drivers/net/xen-netback/netback.c
+@@ -2007,8 +2007,11 @@ static int __init netback_init(void)
+ if (!xen_domain())
+ return -ENODEV;
+
+- /* Allow as many queues as there are CPUs, by default */
+- xenvif_max_queues = num_online_cpus();
++ /* Allow as many queues as there are CPUs if user has not
++ * specified a value.
++ */
++ if (xenvif_max_queues == 0)
++ xenvif_max_queues = num_online_cpus();
+
+ if (fatal_skb_slots < XEN_NETBK_LEGACY_SLOTS_MAX) {
+ pr_info("fatal_skb_slots too small (%d), bump it to XEN_NETBK_LEGACY_SLOTS_MAX (%d)\n",
+diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
+index 52f081f4dfd5..fd51626e859e 100644
+--- a/drivers/net/xen-netfront.c
++++ b/drivers/net/xen-netfront.c
+@@ -1710,19 +1710,19 @@ static void xennet_destroy_queues(struct netfront_info *info)
+ }
+
+ static int xennet_create_queues(struct netfront_info *info,
+- unsigned int num_queues)
++ unsigned int *num_queues)
+ {
+ unsigned int i;
+ int ret;
+
+- info->queues = kcalloc(num_queues, sizeof(struct netfront_queue),
++ info->queues = kcalloc(*num_queues, sizeof(struct netfront_queue),
+ GFP_KERNEL);
+ if (!info->queues)
+ return -ENOMEM;
+
+ rtnl_lock();
+
+- for (i = 0; i < num_queues; i++) {
++ for (i = 0; i < *num_queues; i++) {
+ struct netfront_queue *queue = &info->queues[i];
+
+ queue->id = i;
+@@ -1732,7 +1732,7 @@ static int xennet_create_queues(struct netfront_info *info,
+ if (ret < 0) {
+ dev_warn(&info->netdev->dev,
+ "only created %d queues\n", i);
+- num_queues = i;
++ *num_queues = i;
+ break;
+ }
+
+@@ -1742,11 +1742,11 @@ static int xennet_create_queues(struct netfront_info *info,
+ napi_enable(&queue->napi);
+ }
+
+- netif_set_real_num_tx_queues(info->netdev, num_queues);
++ netif_set_real_num_tx_queues(info->netdev, *num_queues);
+
+ rtnl_unlock();
+
+- if (num_queues == 0) {
++ if (*num_queues == 0) {
+ dev_err(&info->netdev->dev, "no queues\n");
+ return -EINVAL;
+ }
+@@ -1792,7 +1792,7 @@ static int talk_to_netback(struct xenbus_device *dev,
+ if (info->queues)
+ xennet_destroy_queues(info);
+
+- err = xennet_create_queues(info, num_queues);
++ err = xennet_create_queues(info, &num_queues);
+ if (err < 0)
+ goto destroy_ring;
+
+@@ -2140,8 +2140,11 @@ static int __init netif_init(void)
+
+ pr_info("Initialising Xen virtual ethernet driver\n");
+
+- /* Allow as many queues as there are CPUs, by default */
+- xennet_max_queues = num_online_cpus();
++ /* Allow as many queues as there are CPUs if user has not
++ * specified a value.
++ */
++ if (xennet_max_queues == 0)
++ xennet_max_queues = num_online_cpus();
+
+ return xenbus_register_frontend(&netfront_driver);
+ }
+diff --git a/drivers/parisc/iommu-helpers.h b/drivers/parisc/iommu-helpers.h
+index 761e77bfce5d..e56f1569f6c3 100644
+--- a/drivers/parisc/iommu-helpers.h
++++ b/drivers/parisc/iommu-helpers.h
+@@ -104,7 +104,11 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev,
+ struct scatterlist *contig_sg; /* contig chunk head */
+ unsigned long dma_offset, dma_len; /* start/len of DMA stream */
+ unsigned int n_mappings = 0;
+- unsigned int max_seg_size = dma_get_max_seg_size(dev);
++ unsigned int max_seg_size = min(dma_get_max_seg_size(dev),
++ (unsigned)DMA_CHUNK_SIZE);
++ unsigned int max_seg_boundary = dma_get_seg_boundary(dev) + 1;
++ if (max_seg_boundary) /* check if the addition above didn't overflow */
++ max_seg_size = min(max_seg_size, max_seg_boundary);
+
+ while (nents > 0) {
+
+@@ -138,14 +142,11 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev,
+
+ /*
+ ** First make sure current dma stream won't
+- ** exceed DMA_CHUNK_SIZE if we coalesce the
++ ** exceed max_seg_size if we coalesce the
+ ** next entry.
+ */
+- if(unlikely(ALIGN(dma_len + dma_offset + startsg->length,
+- IOVP_SIZE) > DMA_CHUNK_SIZE))
+- break;
+-
+- if (startsg->length + dma_len > max_seg_size)
++ if (unlikely(ALIGN(dma_len + dma_offset + startsg->length, IOVP_SIZE) >
++ max_seg_size))
+ break;
+
+ /*
+diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c
+index d542e06d6cd3..10e520d6bb75 100644
+--- a/drivers/staging/lustre/lustre/obdecho/echo_client.c
++++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c
+@@ -1268,6 +1268,7 @@ static int
+ echo_copyout_lsm(struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
+ {
+ struct lov_stripe_md *ulsm = _ulsm;
++ struct lov_oinfo **p;
+ int nob, i;
+
+ nob = offsetof(struct lov_stripe_md, lsm_oinfo[lsm->lsm_stripe_count]);
+@@ -1277,9 +1278,10 @@ echo_copyout_lsm(struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
+ if (copy_to_user(ulsm, lsm, sizeof(*ulsm)))
+ return -EFAULT;
+
+- for (i = 0; i < lsm->lsm_stripe_count; i++) {
+- if (copy_to_user(ulsm->lsm_oinfo[i], lsm->lsm_oinfo[i],
+- sizeof(lsm->lsm_oinfo[0])))
++ for (i = 0, p = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++, p++) {
++ struct lov_oinfo __user *up;
++ if (get_user(up, ulsm->lsm_oinfo + i) ||
++ copy_to_user(up, *p, sizeof(struct lov_oinfo)))
+ return -EFAULT;
+ }
+ return 0;
+@@ -1287,9 +1289,10 @@ echo_copyout_lsm(struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
+
+ static int
+ echo_copyin_lsm(struct echo_device *ed, struct lov_stripe_md *lsm,
+- void *ulsm, int ulsm_nob)
++ struct lov_stripe_md __user *ulsm, int ulsm_nob)
+ {
+ struct echo_client_obd *ec = ed->ed_ec;
++ struct lov_oinfo **p;
+ int i;
+
+ if (ulsm_nob < sizeof(*lsm))
+@@ -1305,11 +1308,10 @@ echo_copyin_lsm(struct echo_device *ed, struct lov_stripe_md *lsm,
+ return -EINVAL;
+
+
+- for (i = 0; i < lsm->lsm_stripe_count; i++) {
+- if (copy_from_user(lsm->lsm_oinfo[i],
+- ((struct lov_stripe_md *)ulsm)-> \
+- lsm_oinfo[i],
+- sizeof(lsm->lsm_oinfo[0])))
++ for (i = 0, p = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++, p++) {
++ struct lov_oinfo __user *up;
++ if (get_user(up, ulsm->lsm_oinfo + i) ||
++ copy_from_user(*p, up, sizeof(struct lov_oinfo)))
+ return -EFAULT;
+ }
+ return 0;
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index d68c4a4db682..ee11b301f3da 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -1034,10 +1034,20 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
+ unsigned delay;
+
+ /* Continue a partial initialization */
+- if (type == HUB_INIT2)
+- goto init2;
+- if (type == HUB_INIT3)
++ if (type == HUB_INIT2 || type == HUB_INIT3) {
++ device_lock(hub->intfdev);
++
++ /* Was the hub disconnected while we were waiting? */
++ if (hub->disconnected) {
++ device_unlock(hub->intfdev);
++ kref_put(&hub->kref, hub_release);
++ return;
++ }
++ if (type == HUB_INIT2)
++ goto init2;
+ goto init3;
++ }
++ kref_get(&hub->kref);
+
+ /* The superspeed hub except for root hub has to use Hub Depth
+ * value as an offset into the route string to locate the bits
+@@ -1235,6 +1245,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
+ queue_delayed_work(system_power_efficient_wq,
+ &hub->init_work,
+ msecs_to_jiffies(delay));
++ device_unlock(hub->intfdev);
+ return; /* Continues at init3: below */
+ } else {
+ msleep(delay);
+@@ -1256,6 +1267,11 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
+ /* Allow autosuspend if it was suppressed */
+ if (type <= HUB_INIT3)
+ usb_autopm_put_interface_async(to_usb_interface(hub->intfdev));
++
++ if (type == HUB_INIT2 || type == HUB_INIT3)
++ device_unlock(hub->intfdev);
++
++ kref_put(&hub->kref, hub_release);
+ }
+
+ /* Implement the continuations for the delays above */
+diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
+index 1e6d7579709e..f6bb118e4501 100644
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -4794,8 +4794,16 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
+ ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG);
+ slot_ctx = xhci_get_slot_ctx(xhci, config_cmd->in_ctx);
+ slot_ctx->dev_info |= cpu_to_le32(DEV_HUB);
++ /*
++ * refer to section 6.2.2: MTT should be 0 for full speed hub,
++ * but it may be already set to 1 when setup an xHCI virtual
++ * device, so clear it anyway.
++ */
+ if (tt->multi)
+ slot_ctx->dev_info |= cpu_to_le32(DEV_MTT);
++ else if (hdev->speed == USB_SPEED_FULL)
++ slot_ctx->dev_info &= cpu_to_le32(~DEV_MTT);
++
+ if (xhci->hci_version > 0x95) {
+ xhci_dbg(xhci, "xHCI version %x needs hub "
+ "TT think time and number of ports\n",
+@@ -5046,6 +5054,10 @@ static int __init xhci_hcd_init(void)
+ BUILD_BUG_ON(sizeof(struct xhci_intr_reg) != 8*32/8);
+ /* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */
+ BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
++
++ if (usb_disabled())
++ return -ENODEV;
++
+ return 0;
+ }
+
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index 7d4f51a32e66..59b2126b21a3 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -160,6 +160,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */
+ { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */
+ { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
++ { USB_DEVICE(0x18EF, 0xE025) }, /* ELV Marble Sound Board 1 */
+ { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */
+ { USB_DEVICE(0x1B1C, 0x1C00) }, /* Corsair USB Dongle */
+ { USB_DEVICE(0x1BA4, 0x0002) }, /* Silicon Labs 358x factory default */
+diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
+index f51a5d52c0ed..ec1b8f2c1183 100644
+--- a/drivers/usb/serial/ipaq.c
++++ b/drivers/usb/serial/ipaq.c
+@@ -531,7 +531,8 @@ static int ipaq_open(struct tty_struct *tty,
+ * through. Since this has a reasonably high failure rate, we retry
+ * several times.
+ */
+- while (retries--) {
++ while (retries) {
++ retries--;
+ result = usb_control_msg(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0), 0x22, 0x21,
+ 0x1, 0, NULL, 0, 100);
+diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
+index 4bd23bba816f..ee71baddbb10 100644
+--- a/drivers/xen/gntdev.c
++++ b/drivers/xen/gntdev.c
+@@ -804,7 +804,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
+
+ vma->vm_ops = &gntdev_vmops;
+
+- vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
++ vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP | VM_IO;
+
+ if (use_ptemod)
+ vma->vm_flags |= VM_DONTCOPY;
+diff --git a/fs/direct-io.c b/fs/direct-io.c
+index 745d2342651a..d83a021a659f 100644
+--- a/fs/direct-io.c
++++ b/fs/direct-io.c
+@@ -1159,6 +1159,16 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
+ }
+ }
+
++ /* Once we sampled i_size check for reads beyond EOF */
++ dio->i_size = i_size_read(inode);
++ if (iov_iter_rw(iter) == READ && offset >= dio->i_size) {
++ if (dio->flags & DIO_LOCKING)
++ mutex_unlock(&inode->i_mutex);
++ kmem_cache_free(dio_cache, dio);
++ retval = 0;
++ goto out;
++ }
++
+ /*
+ * For file extending writes updating i_size before data writeouts
+ * complete can expose uninitialized blocks in dumb filesystems.
+@@ -1212,7 +1222,6 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
+ sdio.next_block_for_io = -1;
+
+ dio->iocb = iocb;
+- dio->i_size = i_size_read(inode);
+
+ spin_lock_init(&dio->bio_lock);
+ dio->refcount = 1;
+diff --git a/include/linux/filter.h b/include/linux/filter.h
+index fa11b3a367be..1ce6e1049a3b 100644
+--- a/include/linux/filter.h
++++ b/include/linux/filter.h
+@@ -428,6 +428,25 @@ static inline void bpf_jit_free(struct bpf_prog *fp)
+
+ #define BPF_ANC BIT(15)
+
++static inline bool bpf_needs_clear_a(const struct sock_filter *first)
++{
++ switch (first->code) {
++ case BPF_RET | BPF_K:
++ case BPF_LD | BPF_W | BPF_LEN:
++ return false;
++
++ case BPF_LD | BPF_W | BPF_ABS:
++ case BPF_LD | BPF_H | BPF_ABS:
++ case BPF_LD | BPF_B | BPF_ABS:
++ if (first->k == SKF_AD_OFF + SKF_AD_ALU_XOR_X)
++ return true;
++ return false;
++
++ default:
++ return true;
++ }
++}
++
+ static inline u16 bpf_anc_helper(const struct sock_filter *ftest)
+ {
+ BUG_ON(ftest->code & BPF_ANC);
+diff --git a/include/linux/sched.h b/include/linux/sched.h
+index 61f4f2d5c882..9128b4e9f541 100644
+--- a/include/linux/sched.h
++++ b/include/linux/sched.h
+@@ -802,6 +802,7 @@ struct user_struct {
+ unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */
+ #endif
+ unsigned long locked_shm; /* How many pages of mlocked shm ? */
++ unsigned long unix_inflight; /* How many files in flight in unix sockets */
+
+ #ifdef CONFIG_KEYS
+ struct key *uid_keyring; /* UID specific keyring */
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index 4307e20a4a4a..1f17abe23725 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -3320,7 +3320,8 @@ struct skb_gso_cb {
+ int encap_level;
+ __u16 csum_start;
+ };
+-#define SKB_GSO_CB(skb) ((struct skb_gso_cb *)(skb)->cb)
++#define SKB_SGO_CB_OFFSET 32
++#define SKB_GSO_CB(skb) ((struct skb_gso_cb *)((skb)->cb + SKB_SGO_CB_OFFSET))
+
+ static inline int skb_tnl_header_len(const struct sk_buff *inner_skb)
+ {
+diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
+index 76d1e38aabe1..0c53fd51bf9b 100644
+--- a/include/linux/syscalls.h
++++ b/include/linux/syscalls.h
+@@ -524,7 +524,7 @@ asmlinkage long sys_chown(const char __user *filename,
+ asmlinkage long sys_lchown(const char __user *filename,
+ uid_t user, gid_t group);
+ asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
+-#ifdef CONFIG_UID16
++#ifdef CONFIG_HAVE_UID16
+ asmlinkage long sys_chown16(const char __user *filename,
+ old_uid_t user, old_gid_t group);
+ asmlinkage long sys_lchown16(const char __user *filename,
+diff --git a/include/linux/types.h b/include/linux/types.h
+index 8715287c3b1f..69c44d981da3 100644
+--- a/include/linux/types.h
++++ b/include/linux/types.h
+@@ -35,7 +35,7 @@ typedef __kernel_gid16_t gid16_t;
+
+ typedef unsigned long uintptr_t;
+
+-#ifdef CONFIG_UID16
++#ifdef CONFIG_HAVE_UID16
+ /* This is defined by include/asm-{arch}/posix_types.h */
+ typedef __kernel_old_uid_t old_uid_t;
+ typedef __kernel_old_gid_t old_gid_t;
+diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h
+index 7c9b484735c5..e7827ae2462c 100644
+--- a/include/linux/usb/cdc_ncm.h
++++ b/include/linux/usb/cdc_ncm.h
+@@ -133,6 +133,7 @@ struct cdc_ncm_ctx {
+ };
+
+ u8 cdc_ncm_select_altsetting(struct usb_interface *intf);
++int cdc_ncm_change_mtu(struct net_device *net, int new_mtu);
+ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting);
+ void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf);
+ struct sk_buff *cdc_ncm_fill_tx_frame(struct usbnet *dev, struct sk_buff *skb, __le32 sign);
+diff --git a/include/net/inet_ecn.h b/include/net/inet_ecn.h
+index 84b20835b736..0dc0a51da38f 100644
+--- a/include/net/inet_ecn.h
++++ b/include/net/inet_ecn.h
+@@ -111,11 +111,24 @@ static inline void ipv4_copy_dscp(unsigned int dscp, struct iphdr *inner)
+
+ struct ipv6hdr;
+
+-static inline int IP6_ECN_set_ce(struct ipv6hdr *iph)
++/* Note:
++ * IP_ECN_set_ce() has to tweak IPV4 checksum when setting CE,
++ * meaning both changes have no effect on skb->csum if/when CHECKSUM_COMPLETE
++ * In IPv6 case, no checksum compensates the change in IPv6 header,
++ * so we have to update skb->csum.
++ */
++static inline int IP6_ECN_set_ce(struct sk_buff *skb, struct ipv6hdr *iph)
+ {
++ __be32 from, to;
++
+ if (INET_ECN_is_not_ect(ipv6_get_dsfield(iph)))
+ return 0;
+- *(__be32*)iph |= htonl(INET_ECN_CE << 20);
++
++ from = *(__be32 *)iph;
++ to = from | htonl(INET_ECN_CE << 20);
++ *(__be32 *)iph = to;
++ if (skb->ip_summed == CHECKSUM_COMPLETE)
++ skb->csum = csum_add(csum_sub(skb->csum, from), to);
+ return 1;
+ }
+
+@@ -142,7 +155,7 @@ static inline int INET_ECN_set_ce(struct sk_buff *skb)
+ case cpu_to_be16(ETH_P_IPV6):
+ if (skb_network_header(skb) + sizeof(struct ipv6hdr) <=
+ skb_tail_pointer(skb))
+- return IP6_ECN_set_ce(ipv6_hdr(skb));
++ return IP6_ECN_set_ce(skb, ipv6_hdr(skb));
+ break;
+ }
+
+diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
+index 360c4802288d..7682cb2ae237 100644
+--- a/include/net/inet_timewait_sock.h
++++ b/include/net/inet_timewait_sock.h
+@@ -112,7 +112,19 @@ struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk,
+ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
+ struct inet_hashinfo *hashinfo);
+
+-void inet_twsk_schedule(struct inet_timewait_sock *tw, const int timeo);
++void __inet_twsk_schedule(struct inet_timewait_sock *tw, int timeo,
++ bool rearm);
++
++static inline void inet_twsk_schedule(struct inet_timewait_sock *tw, int timeo)
++{
++ __inet_twsk_schedule(tw, timeo, false);
++}
++
++static inline void inet_twsk_reschedule(struct inet_timewait_sock *tw, int timeo)
++{
++ __inet_twsk_schedule(tw, timeo, true);
++}
++
+ void inet_twsk_deschedule(struct inet_timewait_sock *tw);
+
+ void inet_twsk_purge(struct inet_hashinfo *hashinfo,
+diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
+index 47dcd3aa6e23..141d562064a7 100644
+--- a/kernel/bpf/verifier.c
++++ b/kernel/bpf/verifier.c
+@@ -1019,6 +1019,16 @@ static int check_alu_op(struct reg_state *regs, struct bpf_insn *insn)
+ return -EINVAL;
+ }
+
++ if ((opcode == BPF_LSH || opcode == BPF_RSH ||
++ opcode == BPF_ARSH) && BPF_SRC(insn->code) == BPF_K) {
++ int size = BPF_CLASS(insn->code) == BPF_ALU64 ? 64 : 32;
++
++ if (insn->imm < 0 || insn->imm >= size) {
++ verbose("invalid shift %d\n", insn->imm);
++ return -EINVAL;
++ }
++ }
++
+ /* pattern match 'bpf_add Rx, imm' instruction */
+ if (opcode == BPF_ADD && BPF_CLASS(insn->code) == BPF_ALU64 &&
+ regs[insn->dst_reg].type == FRAME_PTR &&
+diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
+index ac4b96eccade..bd3357e69c5c 100644
+--- a/net/batman-adv/bridge_loop_avoidance.c
++++ b/net/batman-adv/bridge_loop_avoidance.c
+@@ -112,21 +112,17 @@ batadv_backbone_gw_free_ref(struct batadv_bla_backbone_gw *backbone_gw)
+ }
+
+ /* finally deinitialize the claim */
+-static void batadv_claim_free_rcu(struct rcu_head *rcu)
++static void batadv_claim_release(struct batadv_bla_claim *claim)
+ {
+- struct batadv_bla_claim *claim;
+-
+- claim = container_of(rcu, struct batadv_bla_claim, rcu);
+-
+ batadv_backbone_gw_free_ref(claim->backbone_gw);
+- kfree(claim);
++ kfree_rcu(claim, rcu);
+ }
+
+ /* free a claim, call claim_free_rcu if its the last reference */
+ static void batadv_claim_free_ref(struct batadv_bla_claim *claim)
+ {
+ if (atomic_dec_and_test(&claim->refcount))
+- call_rcu(&claim->rcu, batadv_claim_free_rcu);
++ batadv_claim_release(claim);
+ }
+
+ /**
+diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h
+index 1918cd50b62e..b6bff9c1877a 100644
+--- a/net/batman-adv/hard-interface.h
++++ b/net/batman-adv/hard-interface.h
+@@ -64,18 +64,6 @@ batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface)
+ call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu);
+ }
+
+-/**
+- * batadv_hardif_free_ref_now - decrement the hard interface refcounter and
+- * possibly free it (without rcu callback)
+- * @hard_iface: the hard interface to free
+- */
+-static inline void
+-batadv_hardif_free_ref_now(struct batadv_hard_iface *hard_iface)
+-{
+- if (atomic_dec_and_test(&hard_iface->refcount))
+- batadv_hardif_free_rcu(&hard_iface->rcu);
+-}
+-
+ static inline struct batadv_hard_iface *
+ batadv_primary_if_get_selected(struct batadv_priv *bat_priv)
+ {
+diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
+index a449195c5b2b..2fbd3a6bde9a 100644
+--- a/net/batman-adv/network-coding.c
++++ b/net/batman-adv/network-coding.c
+@@ -175,28 +175,25 @@ void batadv_nc_init_orig(struct batadv_orig_node *orig_node)
+ }
+
+ /**
+- * batadv_nc_node_free_rcu - rcu callback to free an nc node and remove
+- * its refcount on the orig_node
+- * @rcu: rcu pointer of the nc node
++ * batadv_nc_node_release - release nc_node from lists and queue for free after
++ * rcu grace period
++ * @nc_node: the nc node to free
+ */
+-static void batadv_nc_node_free_rcu(struct rcu_head *rcu)
++static void batadv_nc_node_release(struct batadv_nc_node *nc_node)
+ {
+- struct batadv_nc_node *nc_node;
+-
+- nc_node = container_of(rcu, struct batadv_nc_node, rcu);
+ batadv_orig_node_free_ref(nc_node->orig_node);
+- kfree(nc_node);
++ kfree_rcu(nc_node, rcu);
+ }
+
+ /**
+- * batadv_nc_node_free_ref - decrements the nc node refcounter and possibly
+- * frees it
++ * batadv_nc_node_free_ref - decrement the nc node refcounter and possibly
++ * release it
+ * @nc_node: the nc node to free
+ */
+ static void batadv_nc_node_free_ref(struct batadv_nc_node *nc_node)
+ {
+ if (atomic_dec_and_test(&nc_node->refcount))
+- call_rcu(&nc_node->rcu, batadv_nc_node_free_rcu);
++ batadv_nc_node_release(nc_node);
+ }
+
+ /**
+diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
+index dfae97408628..77ea1d4de2ba 100644
+--- a/net/batman-adv/originator.c
++++ b/net/batman-adv/originator.c
+@@ -150,86 +150,58 @@ err:
+ }
+
+ /**
+- * batadv_neigh_ifinfo_free_rcu - free the neigh_ifinfo object
+- * @rcu: rcu pointer of the neigh_ifinfo object
+- */
+-static void batadv_neigh_ifinfo_free_rcu(struct rcu_head *rcu)
+-{
+- struct batadv_neigh_ifinfo *neigh_ifinfo;
+-
+- neigh_ifinfo = container_of(rcu, struct batadv_neigh_ifinfo, rcu);
+-
+- if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
+- batadv_hardif_free_ref_now(neigh_ifinfo->if_outgoing);
+-
+- kfree(neigh_ifinfo);
+-}
+-
+-/**
+- * batadv_neigh_ifinfo_free_now - decrement the refcounter and possibly free
+- * the neigh_ifinfo (without rcu callback)
++ * batadv_neigh_ifinfo_release - release neigh_ifinfo from lists and queue for
++ * free after rcu grace period
+ * @neigh_ifinfo: the neigh_ifinfo object to release
+ */
+ static void
+-batadv_neigh_ifinfo_free_ref_now(struct batadv_neigh_ifinfo *neigh_ifinfo)
++batadv_neigh_ifinfo_release(struct batadv_neigh_ifinfo *neigh_ifinfo)
+ {
+- if (atomic_dec_and_test(&neigh_ifinfo->refcount))
+- batadv_neigh_ifinfo_free_rcu(&neigh_ifinfo->rcu);
++ if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
++ batadv_hardif_free_ref(neigh_ifinfo->if_outgoing);
++
++ kfree_rcu(neigh_ifinfo, rcu);
+ }
+
+ /**
+- * batadv_neigh_ifinfo_free_ref - decrement the refcounter and possibly free
++ * batadv_neigh_ifinfo_free_ref - decrement the refcounter and possibly release
+ * the neigh_ifinfo
+ * @neigh_ifinfo: the neigh_ifinfo object to release
+ */
+ void batadv_neigh_ifinfo_free_ref(struct batadv_neigh_ifinfo *neigh_ifinfo)
+ {
+ if (atomic_dec_and_test(&neigh_ifinfo->refcount))
+- call_rcu(&neigh_ifinfo->rcu, batadv_neigh_ifinfo_free_rcu);
++ batadv_neigh_ifinfo_release(neigh_ifinfo);
+ }
+
+ /**
+- * batadv_neigh_node_free_rcu - free the neigh_node
+- * @rcu: rcu pointer of the neigh_node
++ * batadv_neigh_node_release - release neigh_node from lists and queue for
++ * free after rcu grace period
++ * @neigh_node: neigh neighbor to free
+ */
+-static void batadv_neigh_node_free_rcu(struct rcu_head *rcu)
++static void batadv_neigh_node_release(struct batadv_neigh_node *neigh_node)
+ {
+ struct hlist_node *node_tmp;
+- struct batadv_neigh_node *neigh_node;
+ struct batadv_neigh_ifinfo *neigh_ifinfo;
+
+- neigh_node = container_of(rcu, struct batadv_neigh_node, rcu);
+-
+ hlist_for_each_entry_safe(neigh_ifinfo, node_tmp,
+ &neigh_node->ifinfo_list, list) {
+- batadv_neigh_ifinfo_free_ref_now(neigh_ifinfo);
++ batadv_neigh_ifinfo_free_ref(neigh_ifinfo);
+ }
+- batadv_hardif_free_ref_now(neigh_node->if_incoming);
++ batadv_hardif_free_ref(neigh_node->if_incoming);
+
+- kfree(neigh_node);
+-}
+-
+-/**
+- * batadv_neigh_node_free_ref_now - decrement the neighbors refcounter
+- * and possibly free it (without rcu callback)
+- * @neigh_node: neigh neighbor to free
+- */
+-static void
+-batadv_neigh_node_free_ref_now(struct batadv_neigh_node *neigh_node)
+-{
+- if (atomic_dec_and_test(&neigh_node->refcount))
+- batadv_neigh_node_free_rcu(&neigh_node->rcu);
++ kfree_rcu(neigh_node, rcu);
+ }
+
+ /**
+ * batadv_neigh_node_free_ref - decrement the neighbors refcounter
+- * and possibly free it
++ * and possibly release it
+ * @neigh_node: neigh neighbor to free
+ */
+ void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node)
+ {
+ if (atomic_dec_and_test(&neigh_node->refcount))
+- call_rcu(&neigh_node->rcu, batadv_neigh_node_free_rcu);
++ batadv_neigh_node_release(neigh_node);
+ }
+
+ /**
+@@ -495,108 +467,99 @@ batadv_neigh_node_get(const struct batadv_orig_node *orig_node,
+ }
+
+ /**
+- * batadv_orig_ifinfo_free_rcu - free the orig_ifinfo object
+- * @rcu: rcu pointer of the orig_ifinfo object
++ * batadv_orig_ifinfo_release - release orig_ifinfo from lists and queue for
++ * free after rcu grace period
++ * @orig_ifinfo: the orig_ifinfo object to release
+ */
+-static void batadv_orig_ifinfo_free_rcu(struct rcu_head *rcu)
++static void batadv_orig_ifinfo_release(struct batadv_orig_ifinfo *orig_ifinfo)
+ {
+- struct batadv_orig_ifinfo *orig_ifinfo;
+ struct batadv_neigh_node *router;
+
+- orig_ifinfo = container_of(rcu, struct batadv_orig_ifinfo, rcu);
+-
+ if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
+- batadv_hardif_free_ref_now(orig_ifinfo->if_outgoing);
++ batadv_hardif_free_ref(orig_ifinfo->if_outgoing);
+
+ /* this is the last reference to this object */
+ router = rcu_dereference_protected(orig_ifinfo->router, true);
+ if (router)
+- batadv_neigh_node_free_ref_now(router);
+- kfree(orig_ifinfo);
++ batadv_neigh_node_free_ref(router);
++
++ kfree_rcu(orig_ifinfo, rcu);
+ }
+
+ /**
+- * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free
+- * the orig_ifinfo (without rcu callback)
++ * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly release
++ * the orig_ifinfo
+ * @orig_ifinfo: the orig_ifinfo object to release
+ */
+-static void
+-batadv_orig_ifinfo_free_ref_now(struct batadv_orig_ifinfo *orig_ifinfo)
++void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo)
+ {
+ if (atomic_dec_and_test(&orig_ifinfo->refcount))
+- batadv_orig_ifinfo_free_rcu(&orig_ifinfo->rcu);
++ batadv_orig_ifinfo_release(orig_ifinfo);
+ }
+
+ /**
+- * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free
+- * the orig_ifinfo
+- * @orig_ifinfo: the orig_ifinfo object to release
++ * batadv_orig_node_free_rcu - free the orig_node
++ * @rcu: rcu pointer of the orig_node
+ */
+-void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo)
++static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
+ {
+- if (atomic_dec_and_test(&orig_ifinfo->refcount))
+- call_rcu(&orig_ifinfo->rcu, batadv_orig_ifinfo_free_rcu);
++ struct batadv_orig_node *orig_node;
++
++ orig_node = container_of(rcu, struct batadv_orig_node, rcu);
++
++ batadv_mcast_purge_orig(orig_node);
++
++ batadv_frag_purge_orig(orig_node, NULL);
++
++ if (orig_node->bat_priv->bat_algo_ops->bat_orig_free)
++ orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node);
++
++ kfree(orig_node->tt_buff);
++ kfree(orig_node);
+ }
+
+-static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
++/**
++ * batadv_orig_node_release - release orig_node from lists and queue for
++ * free after rcu grace period
++ * @orig_node: the orig node to free
++ */
++static void batadv_orig_node_release(struct batadv_orig_node *orig_node)
+ {
+ struct hlist_node *node_tmp;
+ struct batadv_neigh_node *neigh_node;
+- struct batadv_orig_node *orig_node;
+ struct batadv_orig_ifinfo *orig_ifinfo;
+
+- orig_node = container_of(rcu, struct batadv_orig_node, rcu);
+-
+ spin_lock_bh(&orig_node->neigh_list_lock);
+
+ /* for all neighbors towards this originator ... */
+ hlist_for_each_entry_safe(neigh_node, node_tmp,
+ &orig_node->neigh_list, list) {
+ hlist_del_rcu(&neigh_node->list);
+- batadv_neigh_node_free_ref_now(neigh_node);
++ batadv_neigh_node_free_ref(neigh_node);
+ }
+
+ hlist_for_each_entry_safe(orig_ifinfo, node_tmp,
+ &orig_node->ifinfo_list, list) {
+ hlist_del_rcu(&orig_ifinfo->list);
+- batadv_orig_ifinfo_free_ref_now(orig_ifinfo);
++ batadv_orig_ifinfo_free_ref(orig_ifinfo);
+ }
+ spin_unlock_bh(&orig_node->neigh_list_lock);
+
+- batadv_mcast_purge_orig(orig_node);
+-
+ /* Free nc_nodes */
+ batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL);
+
+- batadv_frag_purge_orig(orig_node, NULL);
+-
+- if (orig_node->bat_priv->bat_algo_ops->bat_orig_free)
+- orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node);
+-
+- kfree(orig_node->tt_buff);
+- kfree(orig_node);
++ call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu);
+ }
+
+ /**
+ * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly
+- * schedule an rcu callback for freeing it
++ * release it
+ * @orig_node: the orig node to free
+ */
+ void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node)
+ {
+ if (atomic_dec_and_test(&orig_node->refcount))
+- call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu);
+-}
+-
+-/**
+- * batadv_orig_node_free_ref_now - decrement the orig node refcounter and
+- * possibly free it (without rcu callback)
+- * @orig_node: the orig node to free
+- */
+-void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node)
+-{
+- if (atomic_dec_and_test(&orig_node->refcount))
+- batadv_orig_node_free_rcu(&orig_node->rcu);
++ batadv_orig_node_release(orig_node);
+ }
+
+ void batadv_originator_free(struct batadv_priv *bat_priv)
+diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
+index aa4a43696295..28b751ad549c 100644
+--- a/net/batman-adv/originator.h
++++ b/net/batman-adv/originator.h
+@@ -25,7 +25,6 @@ int batadv_originator_init(struct batadv_priv *bat_priv);
+ void batadv_originator_free(struct batadv_priv *bat_priv);
+ void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
+ void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node);
+-void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node);
+ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
+ const uint8_t *addr);
+ struct batadv_neigh_node *
+diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
+index 4f2a9d2c56db..ddd62c9af5b4 100644
+--- a/net/batman-adv/translation-table.c
++++ b/net/batman-adv/translation-table.c
+@@ -219,20 +219,6 @@ int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
+ return count;
+ }
+
+-static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu)
+-{
+- struct batadv_tt_orig_list_entry *orig_entry;
+-
+- orig_entry = container_of(rcu, struct batadv_tt_orig_list_entry, rcu);
+-
+- /* We are in an rcu callback here, therefore we cannot use
+- * batadv_orig_node_free_ref() and its call_rcu():
+- * An rcu_barrier() wouldn't wait for that to finish
+- */
+- batadv_orig_node_free_ref_now(orig_entry->orig_node);
+- kfree(orig_entry);
+-}
+-
+ /**
+ * batadv_tt_local_size_mod - change the size by v of the local table identified
+ * by vid
+@@ -328,13 +314,25 @@ static void batadv_tt_global_size_dec(struct batadv_orig_node *orig_node,
+ batadv_tt_global_size_mod(orig_node, vid, -1);
+ }
+
++/**
++ * batadv_tt_orig_list_entry_release - release tt orig entry from lists and
++ * queue for free after rcu grace period
++ * @orig_entry: tt orig entry to be free'd
++ */
++static void
++batadv_tt_orig_list_entry_release(struct batadv_tt_orig_list_entry *orig_entry)
++{
++ batadv_orig_node_free_ref(orig_entry->orig_node);
++ kfree_rcu(orig_entry, rcu);
++}
++
+ static void
+ batadv_tt_orig_list_entry_free_ref(struct batadv_tt_orig_list_entry *orig_entry)
+ {
+ if (!atomic_dec_and_test(&orig_entry->refcount))
+ return;
+
+- call_rcu(&orig_entry->rcu, batadv_tt_orig_list_entry_free_rcu);
++ batadv_tt_orig_list_entry_release(orig_entry);
+ }
+
+ /**
+diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
+index 4ff77a16956c..3d6c8e222391 100644
+--- a/net/bridge/br_device.c
++++ b/net/bridge/br_device.c
+@@ -28,6 +28,8 @@
+ const struct nf_br_ops __rcu *nf_br_ops __read_mostly;
+ EXPORT_SYMBOL_GPL(nf_br_ops);
+
++static struct lock_class_key bridge_netdev_addr_lock_key;
++
+ /* net device transmit always called with BH disabled */
+ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
+ {
+@@ -87,6 +89,11 @@ out:
+ return NETDEV_TX_OK;
+ }
+
++static void br_set_lockdep_class(struct net_device *dev)
++{
++ lockdep_set_class(&dev->addr_list_lock, &bridge_netdev_addr_lock_key);
++}
++
+ static int br_dev_init(struct net_device *dev)
+ {
+ struct net_bridge *br = netdev_priv(dev);
+@@ -99,6 +106,7 @@ static int br_dev_init(struct net_device *dev)
+ err = br_vlan_init(br);
+ if (err)
+ free_percpu(br->stats);
++ br_set_lockdep_class(dev);
+
+ return err;
+ }
+diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
+index 7832d07f48f6..ce658abdc2c8 100644
+--- a/net/bridge/br_stp_if.c
++++ b/net/bridge/br_stp_if.c
+@@ -128,7 +128,10 @@ static void br_stp_start(struct net_bridge *br)
+ char *argv[] = { BR_STP_PROG, br->dev->name, "start", NULL };
+ char *envp[] = { NULL };
+
+- r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
++ if (net_eq(dev_net(br->dev), &init_net))
++ r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
++ else
++ r = -ENOENT;
+
+ spin_lock_bh(&br->lock);
+
+diff --git a/net/core/dev.c b/net/core/dev.c
+index a42b232805a5..185a3398c651 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -2479,6 +2479,8 @@ static inline bool skb_needs_check(struct sk_buff *skb, bool tx_path)
+ *
+ * It may return NULL if the skb requires no segmentation. This is
+ * only possible when GSO is used for verifying header integrity.
++ *
++ * Segmentation preserves SKB_SGO_CB_OFFSET bytes of previous skb cb.
+ */
+ struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
+ netdev_features_t features, bool tx_path)
+@@ -2493,6 +2495,9 @@ struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
+ return ERR_PTR(err);
+ }
+
++ BUILD_BUG_ON(SKB_SGO_CB_OFFSET +
++ sizeof(*SKB_GSO_CB(skb)) > sizeof(skb->cb));
++
+ SKB_GSO_CB(skb)->mac_offset = skb_headroom(skb);
+ SKB_GSO_CB(skb)->encap_level = 0;
+
+diff --git a/net/core/dst.c b/net/core/dst.c
+index f8db4032d45a..540066cb33ef 100644
+--- a/net/core/dst.c
++++ b/net/core/dst.c
+@@ -282,10 +282,11 @@ void dst_release(struct dst_entry *dst)
+ {
+ if (dst) {
+ int newrefcnt;
++ unsigned short nocache = dst->flags & DST_NOCACHE;
+
+ newrefcnt = atomic_dec_return(&dst->__refcnt);
+ WARN_ON(newrefcnt < 0);
+- if (!newrefcnt && unlikely(dst->flags & DST_NOCACHE))
++ if (!newrefcnt && unlikely(nocache))
+ call_rcu(&dst->rcu_head, dst_destroy_rcu);
+ }
+ }
+diff --git a/net/core/filter.c b/net/core/filter.c
+index 0fa2613b5e35..238bb3f9c51d 100644
+--- a/net/core/filter.c
++++ b/net/core/filter.c
+@@ -775,6 +775,11 @@ int bpf_check_classic(const struct sock_filter *filter, unsigned int flen)
+ if (ftest->k == 0)
+ return -EINVAL;
+ break;
++ case BPF_ALU | BPF_LSH | BPF_K:
++ case BPF_ALU | BPF_RSH | BPF_K:
++ if (ftest->k >= 32)
++ return -EINVAL;
++ break;
+ case BPF_LD | BPF_MEM:
+ case BPF_LDX | BPF_MEM:
+ case BPF_ST:
+diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c
+index 30addee2dd03..838f524cf11a 100644
+--- a/net/dccp/minisocks.c
++++ b/net/dccp/minisocks.c
+@@ -48,8 +48,6 @@ void dccp_time_wait(struct sock *sk, int state, int timeo)
+ tw->tw_ipv6only = sk->sk_ipv6only;
+ }
+ #endif
+- /* Linkage updates. */
+- __inet_twsk_hashdance(tw, sk, &dccp_hashinfo);
+
+ /* Get the TIME_WAIT timeout firing. */
+ if (timeo < rto)
+@@ -60,6 +58,8 @@ void dccp_time_wait(struct sock *sk, int state, int timeo)
+ timeo = DCCP_TIMEWAIT_LEN;
+
+ inet_twsk_schedule(tw, timeo);
++ /* Linkage updates. */
++ __inet_twsk_hashdance(tw, sk, &dccp_hashinfo);
+ inet_twsk_put(tw);
+ } else {
+ /* Sorry, if we're out of memory, just CLOSE this
+diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
+index 00ec8d5d7e7e..bb96c1c4edd6 100644
+--- a/net/ipv4/inet_timewait_sock.c
++++ b/net/ipv4/inet_timewait_sock.c
+@@ -153,13 +153,15 @@ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
+ /*
+ * Step 2: Hash TW into tcp ehash chain.
+ * Notes :
+- * - tw_refcnt is set to 3 because :
++ * - tw_refcnt is set to 4 because :
+ * - We have one reference from bhash chain.
+ * - We have one reference from ehash chain.
++ * - We have one reference from timer.
++ * - One reference for ourself (our caller will release it).
+ * We can use atomic_set() because prior spin_lock()/spin_unlock()
+ * committed into memory all tw fields.
+ */
+- atomic_set(&tw->tw_refcnt, 1 + 1 + 1);
++ atomic_set(&tw->tw_refcnt, 4);
+ inet_twsk_add_node_rcu(tw, &ehead->chain);
+
+ /* Step 3: Remove SK from hash chain */
+@@ -243,7 +245,7 @@ void inet_twsk_deschedule(struct inet_timewait_sock *tw)
+ }
+ EXPORT_SYMBOL(inet_twsk_deschedule);
+
+-void inet_twsk_schedule(struct inet_timewait_sock *tw, const int timeo)
++void __inet_twsk_schedule(struct inet_timewait_sock *tw, int timeo, bool rearm)
+ {
+ /* timeout := RTO * 3.5
+ *
+@@ -271,12 +273,14 @@ void inet_twsk_schedule(struct inet_timewait_sock *tw, const int timeo)
+ */
+
+ tw->tw_kill = timeo <= 4*HZ;
+- if (!mod_timer_pinned(&tw->tw_timer, jiffies + timeo)) {
+- atomic_inc(&tw->tw_refcnt);
++ if (!rearm) {
++ BUG_ON(mod_timer_pinned(&tw->tw_timer, jiffies + timeo));
+ atomic_inc(&tw->tw_dr->tw_count);
++ } else {
++ mod_timer_pending(&tw->tw_timer, jiffies + timeo);
+ }
+ }
+-EXPORT_SYMBOL_GPL(inet_twsk_schedule);
++EXPORT_SYMBOL_GPL(__inet_twsk_schedule);
+
+ void inet_twsk_purge(struct inet_hashinfo *hashinfo,
+ struct inet_timewait_death_row *twdr, int family)
+diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
+index c65b93a7b711..51573f8a39bc 100644
+--- a/net/ipv4/ip_output.c
++++ b/net/ipv4/ip_output.c
+@@ -235,6 +235,7 @@ static int ip_finish_output_gso(struct sock *sk, struct sk_buff *skb)
+ * from host network stack.
+ */
+ features = netif_skb_features(skb);
++ BUILD_BUG_ON(sizeof(*IPCB(skb)) > SKB_SGO_CB_OFFSET);
+ segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK);
+ if (IS_ERR_OR_NULL(segs)) {
+ kfree_skb(skb);
+@@ -893,7 +894,7 @@ static int __ip_append_data(struct sock *sk,
+ if (((length > mtu) || (skb && skb_is_gso(skb))) &&
+ (sk->sk_protocol == IPPROTO_UDP) &&
+ (rt->dst.dev->features & NETIF_F_UFO) && !rt->dst.header_len &&
+- (sk->sk_type == SOCK_DGRAM)) {
++ (sk->sk_type == SOCK_DGRAM) && !sk->sk_no_check_tx) {
+ err = ip_ufo_append_data(sk, queue, getfrag, from, length,
+ hh_len, fragheaderlen, transhdrlen,
+ maxfraglen, flags);
+diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
+index 17e7339ee5ca..fec2907b85e8 100644
+--- a/net/ipv4/tcp_minisocks.c
++++ b/net/ipv4/tcp_minisocks.c
+@@ -163,9 +163,9 @@ kill_with_rst:
+ if (tcp_death_row.sysctl_tw_recycle &&
+ tcptw->tw_ts_recent_stamp &&
+ tcp_tw_remember_stamp(tw))
+- inet_twsk_schedule(tw, tw->tw_timeout);
++ inet_twsk_reschedule(tw, tw->tw_timeout);
+ else
+- inet_twsk_schedule(tw, TCP_TIMEWAIT_LEN);
++ inet_twsk_reschedule(tw, TCP_TIMEWAIT_LEN);
+ return TCP_TW_ACK;
+ }
+
+@@ -203,7 +203,7 @@ kill:
+ return TCP_TW_SUCCESS;
+ }
+ }
+- inet_twsk_schedule(tw, TCP_TIMEWAIT_LEN);
++ inet_twsk_reschedule(tw, TCP_TIMEWAIT_LEN);
+
+ if (tmp_opt.saw_tstamp) {
+ tcptw->tw_ts_recent = tmp_opt.rcv_tsval;
+@@ -253,7 +253,7 @@ kill:
+ * Do not reschedule in the last case.
+ */
+ if (paws_reject || th->ack)
+- inet_twsk_schedule(tw, TCP_TIMEWAIT_LEN);
++ inet_twsk_reschedule(tw, TCP_TIMEWAIT_LEN);
+
+ return tcp_timewait_check_oow_rate_limit(
+ tw, skb, LINUX_MIB_TCPACKSKIPPEDTIMEWAIT);
+@@ -324,9 +324,6 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
+ } while (0);
+ #endif
+
+- /* Linkage updates. */
+- __inet_twsk_hashdance(tw, sk, &tcp_hashinfo);
+-
+ /* Get the TIME_WAIT timeout firing. */
+ if (timeo < rto)
+ timeo = rto;
+@@ -340,6 +337,8 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
+ }
+
+ inet_twsk_schedule(tw, timeo);
++ /* Linkage updates. */
++ __inet_twsk_hashdance(tw, sk, &tcp_hashinfo);
+ inet_twsk_put(tw);
+ } else {
+ /* Sorry, if we're out of memory, just CLOSE this
+diff --git a/net/ipv4/tcp_yeah.c b/net/ipv4/tcp_yeah.c
+index 17d35662930d..3e6a472e6b88 100644
+--- a/net/ipv4/tcp_yeah.c
++++ b/net/ipv4/tcp_yeah.c
+@@ -219,7 +219,7 @@ static u32 tcp_yeah_ssthresh(struct sock *sk)
+ yeah->fast_count = 0;
+ yeah->reno_count = max(yeah->reno_count>>1, 2U);
+
+- return tp->snd_cwnd - reduction;
++ return max_t(int, tp->snd_cwnd - reduction, 2);
+ }
+
+ static struct tcp_congestion_ops tcp_yeah __read_mostly = {
+diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
+index bff69746e05f..78526087126d 100644
+--- a/net/ipv4/xfrm4_policy.c
++++ b/net/ipv4/xfrm4_policy.c
+@@ -230,7 +230,7 @@ static void xfrm4_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
+ xfrm_dst_ifdown(dst, dev);
+ }
+
+-static struct dst_ops xfrm4_dst_ops = {
++static struct dst_ops xfrm4_dst_ops_template = {
+ .family = AF_INET,
+ .gc = xfrm4_garbage_collect,
+ .update_pmtu = xfrm4_update_pmtu,
+@@ -244,7 +244,7 @@ static struct dst_ops xfrm4_dst_ops = {
+
+ static struct xfrm_policy_afinfo xfrm4_policy_afinfo = {
+ .family = AF_INET,
+- .dst_ops = &xfrm4_dst_ops,
++ .dst_ops = &xfrm4_dst_ops_template,
+ .dst_lookup = xfrm4_dst_lookup,
+ .get_saddr = xfrm4_get_saddr,
+ .decode_session = _decode_session4,
+@@ -266,7 +266,7 @@ static struct ctl_table xfrm4_policy_table[] = {
+ { }
+ };
+
+-static int __net_init xfrm4_net_init(struct net *net)
++static int __net_init xfrm4_net_sysctl_init(struct net *net)
+ {
+ struct ctl_table *table;
+ struct ctl_table_header *hdr;
+@@ -294,7 +294,7 @@ err_alloc:
+ return -ENOMEM;
+ }
+
+-static void __net_exit xfrm4_net_exit(struct net *net)
++static void __net_exit xfrm4_net_sysctl_exit(struct net *net)
+ {
+ struct ctl_table *table;
+
+@@ -306,12 +306,44 @@ static void __net_exit xfrm4_net_exit(struct net *net)
+ if (!net_eq(net, &init_net))
+ kfree(table);
+ }
++#else /* CONFIG_SYSCTL */
++static int inline xfrm4_net_sysctl_init(struct net *net)
++{
++ return 0;
++}
++
++static void inline xfrm4_net_sysctl_exit(struct net *net)
++{
++}
++#endif
++
++static int __net_init xfrm4_net_init(struct net *net)
++{
++ int ret;
++
++ memcpy(&net->xfrm.xfrm4_dst_ops, &xfrm4_dst_ops_template,
++ sizeof(xfrm4_dst_ops_template));
++ ret = dst_entries_init(&net->xfrm.xfrm4_dst_ops);
++ if (ret)
++ return ret;
++
++ ret = xfrm4_net_sysctl_init(net);
++ if (ret)
++ dst_entries_destroy(&net->xfrm.xfrm4_dst_ops);
++
++ return ret;
++}
++
++static void __net_exit xfrm4_net_exit(struct net *net)
++{
++ xfrm4_net_sysctl_exit(net);
++ dst_entries_destroy(&net->xfrm.xfrm4_dst_ops);
++}
+
+ static struct pernet_operations __net_initdata xfrm4_net_ops = {
+ .init = xfrm4_net_init,
+ .exit = xfrm4_net_exit,
+ };
+-#endif
+
+ static void __init xfrm4_policy_init(void)
+ {
+@@ -320,13 +352,9 @@ static void __init xfrm4_policy_init(void)
+
+ void __init xfrm4_init(void)
+ {
+- dst_entries_init(&xfrm4_dst_ops);
+-
+ xfrm4_state_init();
+ xfrm4_policy_init();
+ xfrm4_protocol_init();
+-#ifdef CONFIG_SYSCTL
+ register_pernet_subsys(&xfrm4_net_ops);
+-#endif
+ }
+
+diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
+index a2d685030a34..f4795b0d6e6e 100644
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -5267,13 +5267,10 @@ static int addrconf_sysctl_stable_secret(struct ctl_table *ctl, int write,
+ goto out;
+ }
+
+- if (!write) {
+- err = snprintf(str, sizeof(str), "%pI6",
+- &secret->secret);
+- if (err >= sizeof(str)) {
+- err = -EIO;
+- goto out;
+- }
++ err = snprintf(str, sizeof(str), "%pI6", &secret->secret);
++ if (err >= sizeof(str)) {
++ err = -EIO;
++ goto out;
+ }
+
+ err = proc_dostring(&lctl, write, buffer, lenp, ppos);
+diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c
+index 882124ebb438..a8f6986dcbe5 100644
+--- a/net/ipv6/addrlabel.c
++++ b/net/ipv6/addrlabel.c
+@@ -552,7 +552,7 @@ static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr *nlh)
+
+ rcu_read_lock();
+ p = __ipv6_addr_label(net, addr, ipv6_addr_type(addr), ifal->ifal_index);
+- if (p && ip6addrlbl_hold(p))
++ if (p && !ip6addrlbl_hold(p))
+ p = NULL;
+ lseq = ip6addrlbl_table.seq;
+ rcu_read_unlock();
+diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
+index bc09cb97b840..f50228b0abe5 100644
+--- a/net/ipv6/ip6_output.c
++++ b/net/ipv6/ip6_output.c
+@@ -1329,7 +1329,7 @@ emsgsize:
+ (skb && skb_is_gso(skb))) &&
+ (sk->sk_protocol == IPPROTO_UDP) &&
+ (rt->dst.dev->features & NETIF_F_UFO) &&
+- (sk->sk_type == SOCK_DGRAM)) {
++ (sk->sk_type == SOCK_DGRAM) && !udp_get_no_check6_tx(sk)) {
+ err = ip6_ufo_append_data(sk, queue, getfrag, from, length,
+ hh_len, fragheaderlen,
+ transhdrlen, mtu, flags, rt);
+diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
+index c1938ad39f8c..c1147acbc8c4 100644
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -465,8 +465,10 @@ static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst,
+ fl6->flowlabel = ip6_flowlabel(ipv6_hdr(ireq->pktopts));
+
+ skb_set_queue_mapping(skb, queue_mapping);
++ rcu_read_lock();
+ err = ip6_xmit(sk, skb, fl6, rcu_dereference(np->opt),
+ np->tclass);
++ rcu_read_unlock();
+ err = net_xmit_eval(err);
+ }
+
+diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
+index 901ef6f8addc..5266ad2d6419 100644
+--- a/net/ipv6/xfrm6_mode_tunnel.c
++++ b/net/ipv6/xfrm6_mode_tunnel.c
+@@ -24,7 +24,7 @@ static inline void ipip6_ecn_decapsulate(struct sk_buff *skb)
+ struct ipv6hdr *inner_iph = ipipv6_hdr(skb);
+
+ if (INET_ECN_is_ce(ipv6_get_dsfield(outer_iph)))
+- IP6_ECN_set_ce(inner_iph);
++ IP6_ECN_set_ce(skb, inner_iph);
+ }
+
+ /* Add encapsulation header.
+diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
+index f337a908a76a..4fb94f6ee15b 100644
+--- a/net/ipv6/xfrm6_policy.c
++++ b/net/ipv6/xfrm6_policy.c
+@@ -289,7 +289,7 @@ static void xfrm6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
+ xfrm_dst_ifdown(dst, dev);
+ }
+
+-static struct dst_ops xfrm6_dst_ops = {
++static struct dst_ops xfrm6_dst_ops_template = {
+ .family = AF_INET6,
+ .gc = xfrm6_garbage_collect,
+ .update_pmtu = xfrm6_update_pmtu,
+@@ -303,7 +303,7 @@ static struct dst_ops xfrm6_dst_ops = {
+
+ static struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
+ .family = AF_INET6,
+- .dst_ops = &xfrm6_dst_ops,
++ .dst_ops = &xfrm6_dst_ops_template,
+ .dst_lookup = xfrm6_dst_lookup,
+ .get_saddr = xfrm6_get_saddr,
+ .decode_session = _decode_session6,
+@@ -336,7 +336,7 @@ static struct ctl_table xfrm6_policy_table[] = {
+ { }
+ };
+
+-static int __net_init xfrm6_net_init(struct net *net)
++static int __net_init xfrm6_net_sysctl_init(struct net *net)
+ {
+ struct ctl_table *table;
+ struct ctl_table_header *hdr;
+@@ -364,7 +364,7 @@ err_alloc:
+ return -ENOMEM;
+ }
+
+-static void __net_exit xfrm6_net_exit(struct net *net)
++static void __net_exit xfrm6_net_sysctl_exit(struct net *net)
+ {
+ struct ctl_table *table;
+
+@@ -376,24 +376,52 @@ static void __net_exit xfrm6_net_exit(struct net *net)
+ if (!net_eq(net, &init_net))
+ kfree(table);
+ }
++#else /* CONFIG_SYSCTL */
++static int inline xfrm6_net_sysctl_init(struct net *net)
++{
++ return 0;
++}
++
++static void inline xfrm6_net_sysctl_exit(struct net *net)
++{
++}
++#endif
++
++static int __net_init xfrm6_net_init(struct net *net)
++{
++ int ret;
++
++ memcpy(&net->xfrm.xfrm6_dst_ops, &xfrm6_dst_ops_template,
++ sizeof(xfrm6_dst_ops_template));
++ ret = dst_entries_init(&net->xfrm.xfrm6_dst_ops);
++ if (ret)
++ return ret;
++
++ ret = xfrm6_net_sysctl_init(net);
++ if (ret)
++ dst_entries_destroy(&net->xfrm.xfrm6_dst_ops);
++
++ return ret;
++}
++
++static void __net_exit xfrm6_net_exit(struct net *net)
++{
++ xfrm6_net_sysctl_exit(net);
++ dst_entries_destroy(&net->xfrm.xfrm6_dst_ops);
++}
+
+ static struct pernet_operations xfrm6_net_ops = {
+ .init = xfrm6_net_init,
+ .exit = xfrm6_net_exit,
+ };
+-#endif
+
+ int __init xfrm6_init(void)
+ {
+ int ret;
+
+- dst_entries_init(&xfrm6_dst_ops);
+-
+ ret = xfrm6_policy_init();
+- if (ret) {
+- dst_entries_destroy(&xfrm6_dst_ops);
++ if (ret)
+ goto out;
+- }
+ ret = xfrm6_state_init();
+ if (ret)
+ goto out_policy;
+@@ -402,9 +430,7 @@ int __init xfrm6_init(void)
+ if (ret)
+ goto out_state;
+
+-#ifdef CONFIG_SYSCTL
+ register_pernet_subsys(&xfrm6_net_ops);
+-#endif
+ out:
+ return ret;
+ out_state:
+@@ -416,11 +442,8 @@ out_policy:
+
+ void xfrm6_fini(void)
+ {
+-#ifdef CONFIG_SYSCTL
+ unregister_pernet_subsys(&xfrm6_net_ops);
+-#endif
+ xfrm6_protocol_fini();
+ xfrm6_policy_fini();
+ xfrm6_state_fini();
+- dst_entries_destroy(&xfrm6_dst_ops);
+ }
+diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
+index 27e14962b504..b3fe02a2339e 100644
+--- a/net/openvswitch/datapath.c
++++ b/net/openvswitch/datapath.c
+@@ -337,12 +337,10 @@ static int queue_gso_packets(struct datapath *dp, struct sk_buff *skb,
+ unsigned short gso_type = skb_shinfo(skb)->gso_type;
+ struct sw_flow_key later_key;
+ struct sk_buff *segs, *nskb;
+- struct ovs_skb_cb ovs_cb;
+ int err;
+
+- ovs_cb = *OVS_CB(skb);
++ BUILD_BUG_ON(sizeof(*OVS_CB(skb)) > SKB_SGO_CB_OFFSET);
+ segs = __skb_gso_segment(skb, NETIF_F_SG, false);
+- *OVS_CB(skb) = ovs_cb;
+ if (IS_ERR(segs))
+ return PTR_ERR(segs);
+ if (segs == NULL)
+@@ -360,7 +358,6 @@ static int queue_gso_packets(struct datapath *dp, struct sk_buff *skb,
+ /* Queue all of the segments. */
+ skb = segs;
+ do {
+- *OVS_CB(skb) = ovs_cb;
+ if (gso_type & SKB_GSO_UDP && skb != segs)
+ key = &later_key;
+
+diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
+index 32ab87d34828..11d0b29ce4b8 100644
+--- a/net/phonet/af_phonet.c
++++ b/net/phonet/af_phonet.c
+@@ -377,6 +377,10 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct sockaddr_pn sa;
+ u16 len;
+
++ skb = skb_share_check(skb, GFP_ATOMIC);
++ if (!skb)
++ return NET_RX_DROP;
++
+ /* check we have at least a full Phonet header */
+ if (!pskb_pull(skb, sizeof(struct phonethdr)))
+ goto out;
+diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
+index b453270be3fd..3c6f6b774ba6 100644
+--- a/net/sched/sch_generic.c
++++ b/net/sched/sch_generic.c
+@@ -666,8 +666,10 @@ static void qdisc_rcu_free(struct rcu_head *head)
+ {
+ struct Qdisc *qdisc = container_of(head, struct Qdisc, rcu_head);
+
+- if (qdisc_is_percpu_stats(qdisc))
++ if (qdisc_is_percpu_stats(qdisc)) {
+ free_percpu(qdisc->cpu_bstats);
++ free_percpu(qdisc->cpu_qstats);
++ }
+
+ kfree((char *) qdisc - qdisc->padded);
+ }
+diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
+index fef2acdf4a2e..ecae5561b912 100644
+--- a/net/sctp/sm_sideeffect.c
++++ b/net/sctp/sm_sideeffect.c
+@@ -244,12 +244,13 @@ void sctp_generate_t3_rtx_event(unsigned long peer)
+ int error;
+ struct sctp_transport *transport = (struct sctp_transport *) peer;
+ struct sctp_association *asoc = transport->asoc;
+- struct net *net = sock_net(asoc->base.sk);
++ struct sock *sk = asoc->base.sk;
++ struct net *net = sock_net(sk);
+
+ /* Check whether a task is in the sock. */
+
+- bh_lock_sock(asoc->base.sk);
+- if (sock_owned_by_user(asoc->base.sk)) {
++ bh_lock_sock(sk);
++ if (sock_owned_by_user(sk)) {
+ pr_debug("%s: sock is busy\n", __func__);
+
+ /* Try again later. */
+@@ -272,10 +273,10 @@ void sctp_generate_t3_rtx_event(unsigned long peer)
+ transport, GFP_ATOMIC);
+
+ if (error)
+- asoc->base.sk->sk_err = -error;
++ sk->sk_err = -error;
+
+ out_unlock:
+- bh_unlock_sock(asoc->base.sk);
++ bh_unlock_sock(sk);
+ sctp_transport_put(transport);
+ }
+
+@@ -285,11 +286,12 @@ out_unlock:
+ static void sctp_generate_timeout_event(struct sctp_association *asoc,
+ sctp_event_timeout_t timeout_type)
+ {
+- struct net *net = sock_net(asoc->base.sk);
++ struct sock *sk = asoc->base.sk;
++ struct net *net = sock_net(sk);
+ int error = 0;
+
+- bh_lock_sock(asoc->base.sk);
+- if (sock_owned_by_user(asoc->base.sk)) {
++ bh_lock_sock(sk);
++ if (sock_owned_by_user(sk)) {
+ pr_debug("%s: sock is busy: timer %d\n", __func__,
+ timeout_type);
+
+@@ -312,10 +314,10 @@ static void sctp_generate_timeout_event(struct sctp_association *asoc,
+ (void *)timeout_type, GFP_ATOMIC);
+
+ if (error)
+- asoc->base.sk->sk_err = -error;
++ sk->sk_err = -error;
+
+ out_unlock:
+- bh_unlock_sock(asoc->base.sk);
++ bh_unlock_sock(sk);
+ sctp_association_put(asoc);
+ }
+
+@@ -365,10 +367,11 @@ void sctp_generate_heartbeat_event(unsigned long data)
+ int error = 0;
+ struct sctp_transport *transport = (struct sctp_transport *) data;
+ struct sctp_association *asoc = transport->asoc;
+- struct net *net = sock_net(asoc->base.sk);
++ struct sock *sk = asoc->base.sk;
++ struct net *net = sock_net(sk);
+
+- bh_lock_sock(asoc->base.sk);
+- if (sock_owned_by_user(asoc->base.sk)) {
++ bh_lock_sock(sk);
++ if (sock_owned_by_user(sk)) {
+ pr_debug("%s: sock is busy\n", __func__);
+
+ /* Try again later. */
+@@ -389,10 +392,10 @@ void sctp_generate_heartbeat_event(unsigned long data)
+ transport, GFP_ATOMIC);
+
+ if (error)
+- asoc->base.sk->sk_err = -error;
++ sk->sk_err = -error;
+
+ out_unlock:
+- bh_unlock_sock(asoc->base.sk);
++ bh_unlock_sock(sk);
+ sctp_transport_put(transport);
+ }
+
+@@ -403,10 +406,11 @@ void sctp_generate_proto_unreach_event(unsigned long data)
+ {
+ struct sctp_transport *transport = (struct sctp_transport *) data;
+ struct sctp_association *asoc = transport->asoc;
+- struct net *net = sock_net(asoc->base.sk);
++ struct sock *sk = asoc->base.sk;
++ struct net *net = sock_net(sk);
+
+- bh_lock_sock(asoc->base.sk);
+- if (sock_owned_by_user(asoc->base.sk)) {
++ bh_lock_sock(sk);
++ if (sock_owned_by_user(sk)) {
+ pr_debug("%s: sock is busy\n", __func__);
+
+ /* Try again later. */
+@@ -427,7 +431,7 @@ void sctp_generate_proto_unreach_event(unsigned long data)
+ asoc->state, asoc->ep, asoc, transport, GFP_ATOMIC);
+
+ out_unlock:
+- bh_unlock_sock(asoc->base.sk);
++ bh_unlock_sock(sk);
+ sctp_association_put(asoc);
+ }
+
+diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
+index 3ee27b7704ff..e6bb98e583fb 100644
+--- a/net/sctp/sm_statefuns.c
++++ b/net/sctp/sm_statefuns.c
+@@ -4829,7 +4829,8 @@ sctp_disposition_t sctp_sf_do_9_1_prm_abort(
+
+ retval = SCTP_DISPOSITION_CONSUME;
+
+- sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
++ if (abort)
++ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
+
+ /* Even if we can't send the ABORT due to low memory delete the
+ * TCB. This is a departure from our typical NOMEM handling.
+@@ -4966,7 +4967,8 @@ sctp_disposition_t sctp_sf_cookie_wait_prm_abort(
+ SCTP_TO(SCTP_EVENT_TIMEOUT_T1_INIT));
+ retval = SCTP_DISPOSITION_CONSUME;
+
+- sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
++ if (abort)
++ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
+
+ sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
+ SCTP_STATE(SCTP_STATE_CLOSED));
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index a63c2c87a0c6..76e6ec62cf92 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -1513,8 +1513,7 @@ static void sctp_close(struct sock *sk, long timeout)
+ struct sctp_chunk *chunk;
+
+ chunk = sctp_make_abort_user(asoc, NULL, 0);
+- if (chunk)
+- sctp_primitive_ABORT(net, asoc, chunk);
++ sctp_primitive_ABORT(net, asoc, chunk);
+ } else
+ sctp_primitive_SHUTDOWN(net, asoc, NULL);
+ }
+diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
+index 26d50c565f54..3e0fc5127225 100644
+--- a/net/sctp/sysctl.c
++++ b/net/sctp/sysctl.c
+@@ -320,7 +320,7 @@ static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write,
+ struct ctl_table tbl;
+ bool changed = false;
+ char *none = "none";
+- char tmp[8];
++ char tmp[8] = {0};
+ int ret;
+
+ memset(&tbl, 0, sizeof(struct ctl_table));
+diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
+index a398f624c28d..cb3a01a9ed38 100644
+--- a/net/unix/af_unix.c
++++ b/net/unix/af_unix.c
+@@ -1481,6 +1481,21 @@ static void unix_destruct_scm(struct sk_buff *skb)
+ sock_wfree(skb);
+ }
+
++/*
++ * The "user->unix_inflight" variable is protected by the garbage
++ * collection lock, and we just read it locklessly here. If you go
++ * over the limit, there might be a tiny race in actually noticing
++ * it across threads. Tough.
++ */
++static inline bool too_many_unix_fds(struct task_struct *p)
++{
++ struct user_struct *user = current_user();
++
++ if (unlikely(user->unix_inflight > task_rlimit(p, RLIMIT_NOFILE)))
++ return !capable(CAP_SYS_RESOURCE) && !capable(CAP_SYS_ADMIN);
++ return false;
++}
++
+ #define MAX_RECURSION_LEVEL 4
+
+ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
+@@ -1489,6 +1504,9 @@ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
+ unsigned char max_level = 0;
+ int unix_sock_count = 0;
+
++ if (too_many_unix_fds(current))
++ return -ETOOMANYREFS;
++
+ for (i = scm->fp->count - 1; i >= 0; i--) {
+ struct sock *sk = unix_get_socket(scm->fp->fp[i]);
+
+@@ -1510,10 +1528,8 @@ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
+ if (!UNIXCB(skb).fp)
+ return -ENOMEM;
+
+- if (unix_sock_count) {
+- for (i = scm->fp->count - 1; i >= 0; i--)
+- unix_inflight(scm->fp->fp[i]);
+- }
++ for (i = scm->fp->count - 1; i >= 0; i--)
++ unix_inflight(scm->fp->fp[i]);
+ return max_level;
+ }
+
+diff --git a/net/unix/garbage.c b/net/unix/garbage.c
+index a73a226f2d33..8fcdc2283af5 100644
+--- a/net/unix/garbage.c
++++ b/net/unix/garbage.c
+@@ -120,11 +120,11 @@ void unix_inflight(struct file *fp)
+ {
+ struct sock *s = unix_get_socket(fp);
+
++ spin_lock(&unix_gc_lock);
++
+ if (s) {
+ struct unix_sock *u = unix_sk(s);
+
+- spin_lock(&unix_gc_lock);
+-
+ if (atomic_long_inc_return(&u->inflight) == 1) {
+ BUG_ON(!list_empty(&u->link));
+ list_add_tail(&u->link, &gc_inflight_list);
+@@ -132,25 +132,28 @@ void unix_inflight(struct file *fp)
+ BUG_ON(list_empty(&u->link));
+ }
+ unix_tot_inflight++;
+- spin_unlock(&unix_gc_lock);
+ }
++ fp->f_cred->user->unix_inflight++;
++ spin_unlock(&unix_gc_lock);
+ }
+
+ void unix_notinflight(struct file *fp)
+ {
+ struct sock *s = unix_get_socket(fp);
+
++ spin_lock(&unix_gc_lock);
++
+ if (s) {
+ struct unix_sock *u = unix_sk(s);
+
+- spin_lock(&unix_gc_lock);
+ BUG_ON(list_empty(&u->link));
+
+ if (atomic_long_dec_and_test(&u->inflight))
+ list_del_init(&u->link);
+ unix_tot_inflight--;
+- spin_unlock(&unix_gc_lock);
+ }
++ fp->f_cred->user->unix_inflight--;
++ spin_unlock(&unix_gc_lock);
+ }
+
+ static void scan_inflight(struct sock *x, void (*func)(struct unix_sock *),
+diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
+index fbcedbe33190..5097dce5b916 100644
+--- a/net/xfrm/xfrm_output.c
++++ b/net/xfrm/xfrm_output.c
+@@ -153,6 +153,8 @@ static int xfrm_output_gso(struct sock *sk, struct sk_buff *skb)
+ {
+ struct sk_buff *segs;
+
++ BUILD_BUG_ON(sizeof(*IPCB(skb)) > SKB_SGO_CB_OFFSET);
++ BUILD_BUG_ON(sizeof(*IP6CB(skb)) > SKB_SGO_CB_OFFSET);
+ segs = skb_gso_segment(skb, 0);
+ kfree_skb(skb);
+ if (IS_ERR(segs))
+diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
+index 638af0655aaf..4cd2076ff84b 100644
+--- a/net/xfrm/xfrm_policy.c
++++ b/net/xfrm/xfrm_policy.c
+@@ -2806,7 +2806,6 @@ static struct neighbour *xfrm_neigh_lookup(const struct dst_entry *dst,
+
+ int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
+ {
+- struct net *net;
+ int err = 0;
+ if (unlikely(afinfo == NULL))
+ return -EINVAL;
+@@ -2837,26 +2836,6 @@ int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
+ }
+ spin_unlock(&xfrm_policy_afinfo_lock);
+
+- rtnl_lock();
+- for_each_net(net) {
+- struct dst_ops *xfrm_dst_ops;
+-
+- switch (afinfo->family) {
+- case AF_INET:
+- xfrm_dst_ops = &net->xfrm.xfrm4_dst_ops;
+- break;
+-#if IS_ENABLED(CONFIG_IPV6)
+- case AF_INET6:
+- xfrm_dst_ops = &net->xfrm.xfrm6_dst_ops;
+- break;
+-#endif
+- default:
+- BUG();
+- }
+- *xfrm_dst_ops = *afinfo->dst_ops;
+- }
+- rtnl_unlock();
+-
+ return err;
+ }
+ EXPORT_SYMBOL(xfrm_policy_register_afinfo);
+@@ -2892,22 +2871,6 @@ int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo)
+ }
+ EXPORT_SYMBOL(xfrm_policy_unregister_afinfo);
+
+-static void __net_init xfrm_dst_ops_init(struct net *net)
+-{
+- struct xfrm_policy_afinfo *afinfo;
+-
+- rcu_read_lock();
+- afinfo = rcu_dereference(xfrm_policy_afinfo[AF_INET]);
+- if (afinfo)
+- net->xfrm.xfrm4_dst_ops = *afinfo->dst_ops;
+-#if IS_ENABLED(CONFIG_IPV6)
+- afinfo = rcu_dereference(xfrm_policy_afinfo[AF_INET6]);
+- if (afinfo)
+- net->xfrm.xfrm6_dst_ops = *afinfo->dst_ops;
+-#endif
+- rcu_read_unlock();
+-}
+-
+ static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void *ptr)
+ {
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+@@ -3056,7 +3019,6 @@ static int __net_init xfrm_net_init(struct net *net)
+ rv = xfrm_policy_init(net);
+ if (rv < 0)
+ goto out_policy;
+- xfrm_dst_ops_init(net);
+ rv = xfrm_sysctl_init(net);
+ if (rv < 0)
+ goto out_sysctl;
+diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
+index 3d1984e59a30..e00bcd129336 100644
+--- a/scripts/recordmcount.c
++++ b/scripts/recordmcount.c
+@@ -42,6 +42,7 @@
+
+ #ifndef EM_AARCH64
+ #define EM_AARCH64 183
++#define R_AARCH64_NONE 0
+ #define R_AARCH64_ABS64 257
+ #endif
+
+@@ -160,6 +161,22 @@ static int make_nop_x86(void *map, size_t const offset)
+ return 0;
+ }
+
++static unsigned char ideal_nop4_arm64[4] = {0x1f, 0x20, 0x03, 0xd5};
++static int make_nop_arm64(void *map, size_t const offset)
++{
++ uint32_t *ptr;
++
++ ptr = map + offset;
++ /* bl <_mcount> is 0x94000000 before relocation */
++ if (*ptr != 0x94000000)
++ return -1;
++
++ /* Convert to nop */
++ ulseek(fd_map, offset, SEEK_SET);
++ uwrite(fd_map, ideal_nop, 4);
++ return 0;
++}
++
+ /*
+ * Get the whole file as a programming convenience in order to avoid
+ * malloc+lseek+read+free of many pieces. If successful, then mmap
+@@ -353,7 +370,12 @@ do_file(char const *const fname)
+ altmcount = "__gnu_mcount_nc";
+ break;
+ case EM_AARCH64:
+- reltype = R_AARCH64_ABS64; gpfx = '_'; break;
++ reltype = R_AARCH64_ABS64;
++ make_nop = make_nop_arm64;
++ rel_type_nop = R_AARCH64_NONE;
++ ideal_nop = ideal_nop4_arm64;
++ gpfx = '_';
++ break;
+ case EM_IA_64: reltype = R_IA64_IMM64; gpfx = '_'; break;
+ case EM_METAG: reltype = R_METAG_ADDR32;
+ altmcount = "_mcount_wrapper";
+diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h
+index 49b582a225b0..b9897e2be404 100644
+--- a/scripts/recordmcount.h
++++ b/scripts/recordmcount.h
+@@ -377,7 +377,7 @@ static void nop_mcount(Elf_Shdr const *const relhdr,
+
+ if (mcountsym == Elf_r_sym(relp) && !is_fake_mcount(relp)) {
+ if (make_nop)
+- ret = make_nop((void *)ehdr, shdr->sh_offset + relp->r_offset);
++ ret = make_nop((void *)ehdr, _w(shdr->sh_offset) + _w(relp->r_offset));
+ if (warn_on_notrace_sect && !once) {
+ printf("Section %s has mcount callers being ignored\n",
+ txtname);
+diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
+index 826470d7f000..96e2486a6fc4 100755
+--- a/scripts/recordmcount.pl
++++ b/scripts/recordmcount.pl
+@@ -263,7 +263,8 @@ if ($arch eq "x86_64") {
+
+ } elsif ($arch eq "powerpc") {
+ $local_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\.?\\S+)";
+- $function_regex = "^([0-9a-fA-F]+)\\s+<(\\.?.*?)>:";
++ # See comment in the sparc64 section for why we use '\w'.
++ $function_regex = "^([0-9a-fA-F]+)\\s+<(\\.?\\w*?)>:";
+ $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s\\.?_mcount\$";
+
+ if ($bits == 64) {
+diff --git a/sound/core/control.c b/sound/core/control.c
+index 196a6fe100ca..a85d45595d02 100644
+--- a/sound/core/control.c
++++ b/sound/core/control.c
+@@ -1405,6 +1405,8 @@ static int snd_ctl_tlv_ioctl(struct snd_ctl_file *file,
+ return -EFAULT;
+ if (tlv.length < sizeof(unsigned int) * 2)
+ return -EINVAL;
++ if (!tlv.numid)
++ return -EINVAL;
+ down_read(&card->controls_rwsem);
+ kctl = snd_ctl_find_numid(card, tlv.numid);
+ if (kctl == NULL) {
+diff --git a/sound/core/hrtimer.c b/sound/core/hrtimer.c
+index 886be7da989d..38514ed6e55c 100644
+--- a/sound/core/hrtimer.c
++++ b/sound/core/hrtimer.c
+@@ -90,7 +90,7 @@ static int snd_hrtimer_start(struct snd_timer *t)
+ struct snd_hrtimer *stime = t->private_data;
+
+ atomic_set(&stime->running, 0);
+- hrtimer_cancel(&stime->hrt);
++ hrtimer_try_to_cancel(&stime->hrt);
+ hrtimer_start(&stime->hrt, ns_to_ktime(t->sticks * resolution),
+ HRTIMER_MODE_REL);
+ atomic_set(&stime->running, 1);
+@@ -101,6 +101,7 @@ static int snd_hrtimer_stop(struct snd_timer *t)
+ {
+ struct snd_hrtimer *stime = t->private_data;
+ atomic_set(&stime->running, 0);
++ hrtimer_try_to_cancel(&stime->hrt);
+ return 0;
+ }
+
+diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c
+index b48b434444ed..9630e9f72b7b 100644
+--- a/sound/core/pcm_compat.c
++++ b/sound/core/pcm_compat.c
+@@ -255,10 +255,15 @@ static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
+ if (! (runtime = substream->runtime))
+ return -ENOTTY;
+
+- /* only fifo_size is different, so just copy all */
+- data = memdup_user(data32, sizeof(*data32));
+- if (IS_ERR(data))
+- return PTR_ERR(data);
++ data = kmalloc(sizeof(*data), GFP_KERNEL);
++ if (!data)
++ return -ENOMEM;
++
++ /* only fifo_size (RO from userspace) is different, so just copy all */
++ if (copy_from_user(data, data32, sizeof(*data32))) {
++ err = -EFAULT;
++ goto error;
++ }
+
+ if (refine)
+ err = snd_pcm_hw_refine(substream, data);
+diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
+index edbdab85fc02..bd4741442909 100644
+--- a/sound/core/seq/seq_clientmgr.c
++++ b/sound/core/seq/seq_clientmgr.c
+@@ -1962,7 +1962,7 @@ static int snd_seq_ioctl_remove_events(struct snd_seq_client *client,
+ * No restrictions so for a user client we can clear
+ * the whole fifo
+ */
+- if (client->type == USER_CLIENT)
++ if (client->type == USER_CLIENT && client->data.user.fifo)
+ snd_seq_fifo_clear(client->data.user.fifo);
+ }
+
+diff --git a/sound/core/seq/seq_compat.c b/sound/core/seq/seq_compat.c
+index 81f7c109dc46..65175902a68a 100644
+--- a/sound/core/seq/seq_compat.c
++++ b/sound/core/seq/seq_compat.c
+@@ -49,11 +49,12 @@ static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned
+ struct snd_seq_port_info *data;
+ mm_segment_t fs;
+
+- data = memdup_user(data32, sizeof(*data32));
+- if (IS_ERR(data))
+- return PTR_ERR(data);
++ data = kmalloc(sizeof(*data), GFP_KERNEL);
++ if (!data)
++ return -ENOMEM;
+
+- if (get_user(data->flags, &data32->flags) ||
++ if (copy_from_user(data, data32, sizeof(*data32)) ||
++ get_user(data->flags, &data32->flags) ||
+ get_user(data->time_queue, &data32->time_queue))
+ goto error;
+ data->kernel = NULL;
+diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c
+index a0cda38205b9..77ec21420355 100644
+--- a/sound/core/seq/seq_queue.c
++++ b/sound/core/seq/seq_queue.c
+@@ -142,8 +142,10 @@ static struct snd_seq_queue *queue_new(int owner, int locked)
+ static void queue_delete(struct snd_seq_queue *q)
+ {
+ /* stop and release the timer */
++ mutex_lock(&q->timer_mutex);
+ snd_seq_timer_stop(q->timer);
+ snd_seq_timer_close(q);
++ mutex_unlock(&q->timer_mutex);
+ /* wait until access free */
+ snd_use_lock_sync(&q->use_lock);
+ /* release resources... */
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index a9a1a047c521..a419878901c4 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -65,6 +65,7 @@ struct snd_timer_user {
+ int qtail;
+ int qused;
+ int queue_size;
++ bool disconnected;
+ struct snd_timer_read *queue;
+ struct snd_timer_tread *tqueue;
+ spinlock_t qlock;
+@@ -73,7 +74,7 @@ struct snd_timer_user {
+ struct timespec tstamp; /* trigger tstamp */
+ wait_queue_head_t qchange_sleep;
+ struct fasync_struct *fasync;
+- struct mutex tread_sem;
++ struct mutex ioctl_lock;
+ };
+
+ /* list of timers */
+@@ -215,11 +216,13 @@ static void snd_timer_check_master(struct snd_timer_instance *master)
+ slave->slave_id == master->slave_id) {
+ list_move_tail(&slave->open_list, &master->slave_list_head);
+ spin_lock_irq(&slave_active_lock);
++ spin_lock(&master->timer->lock);
+ slave->master = master;
+ slave->timer = master->timer;
+ if (slave->flags & SNDRV_TIMER_IFLG_RUNNING)
+ list_add_tail(&slave->active_list,
+ &master->slave_active_head);
++ spin_unlock(&master->timer->lock);
+ spin_unlock_irq(&slave_active_lock);
+ }
+ }
+@@ -288,6 +291,9 @@ int snd_timer_open(struct snd_timer_instance **ti,
+ mutex_unlock(®ister_mutex);
+ return -ENOMEM;
+ }
++ /* take a card refcount for safe disconnection */
++ if (timer->card)
++ get_device(&timer->card->card_dev);
+ timeri->slave_class = tid->dev_sclass;
+ timeri->slave_id = slave_id;
+ if (list_empty(&timer->open_list_head) && timer->hw.open)
+@@ -346,15 +352,21 @@ int snd_timer_close(struct snd_timer_instance *timeri)
+ timer->hw.close)
+ timer->hw.close(timer);
+ /* remove slave links */
++ spin_lock_irq(&slave_active_lock);
++ spin_lock(&timer->lock);
+ list_for_each_entry_safe(slave, tmp, &timeri->slave_list_head,
+ open_list) {
+- spin_lock_irq(&slave_active_lock);
+- _snd_timer_stop(slave, 1, SNDRV_TIMER_EVENT_RESOLUTION);
+ list_move_tail(&slave->open_list, &snd_timer_slave_list);
+ slave->master = NULL;
+ slave->timer = NULL;
+- spin_unlock_irq(&slave_active_lock);
++ list_del_init(&slave->ack_list);
++ list_del_init(&slave->active_list);
+ }
++ spin_unlock(&timer->lock);
++ spin_unlock_irq(&slave_active_lock);
++ /* release a card refcount for safe disconnection */
++ if (timer->card)
++ put_device(&timer->card->card_dev);
+ mutex_unlock(®ister_mutex);
+ }
+ out:
+@@ -441,9 +453,12 @@ static int snd_timer_start_slave(struct snd_timer_instance *timeri)
+
+ spin_lock_irqsave(&slave_active_lock, flags);
+ timeri->flags |= SNDRV_TIMER_IFLG_RUNNING;
+- if (timeri->master)
++ if (timeri->master && timeri->timer) {
++ spin_lock(&timeri->timer->lock);
+ list_add_tail(&timeri->active_list,
+ &timeri->master->slave_active_head);
++ spin_unlock(&timeri->timer->lock);
++ }
+ spin_unlock_irqrestore(&slave_active_lock, flags);
+ return 1; /* delayed start */
+ }
+@@ -467,6 +482,8 @@ int snd_timer_start(struct snd_timer_instance *timeri, unsigned int ticks)
+ timer = timeri->timer;
+ if (timer == NULL)
+ return -EINVAL;
++ if (timer->card && timer->card->shutdown)
++ return -ENODEV;
+ spin_lock_irqsave(&timer->lock, flags);
+ timeri->ticks = timeri->cticks = ticks;
+ timeri->pticks = 0;
+@@ -489,6 +506,8 @@ static int _snd_timer_stop(struct snd_timer_instance * timeri,
+ if (!keep_flag) {
+ spin_lock_irqsave(&slave_active_lock, flags);
+ timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
++ list_del_init(&timeri->ack_list);
++ list_del_init(&timeri->active_list);
+ spin_unlock_irqrestore(&slave_active_lock, flags);
+ }
+ goto __end;
+@@ -499,6 +518,10 @@ static int _snd_timer_stop(struct snd_timer_instance * timeri,
+ spin_lock_irqsave(&timer->lock, flags);
+ list_del_init(&timeri->ack_list);
+ list_del_init(&timeri->active_list);
++ if (timer->card && timer->card->shutdown) {
++ spin_unlock_irqrestore(&timer->lock, flags);
++ return 0;
++ }
+ if ((timeri->flags & SNDRV_TIMER_IFLG_RUNNING) &&
+ !(--timer->running)) {
+ timer->hw.stop(timer);
+@@ -561,6 +584,8 @@ int snd_timer_continue(struct snd_timer_instance *timeri)
+ timer = timeri->timer;
+ if (! timer)
+ return -EINVAL;
++ if (timer->card && timer->card->shutdown)
++ return -ENODEV;
+ spin_lock_irqsave(&timer->lock, flags);
+ if (!timeri->cticks)
+ timeri->cticks = 1;
+@@ -624,6 +649,9 @@ static void snd_timer_tasklet(unsigned long arg)
+ unsigned long resolution, ticks;
+ unsigned long flags;
+
++ if (timer->card && timer->card->shutdown)
++ return;
++
+ spin_lock_irqsave(&timer->lock, flags);
+ /* now process all callbacks */
+ while (!list_empty(&timer->sack_list_head)) {
+@@ -664,6 +692,9 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)
+ if (timer == NULL)
+ return;
+
++ if (timer->card && timer->card->shutdown)
++ return;
++
+ spin_lock_irqsave(&timer->lock, flags);
+
+ /* remember the current resolution */
+@@ -694,7 +725,7 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)
+ } else {
+ ti->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+ if (--timer->running)
+- list_del(&ti->active_list);
++ list_del_init(&ti->active_list);
+ }
+ if ((timer->hw.flags & SNDRV_TIMER_HW_TASKLET) ||
+ (ti->flags & SNDRV_TIMER_IFLG_FAST))
+@@ -874,11 +905,28 @@ static int snd_timer_dev_register(struct snd_device *dev)
+ return 0;
+ }
+
++/* just for reference in snd_timer_dev_disconnect() below */
++static void snd_timer_user_ccallback(struct snd_timer_instance *timeri,
++ int event, struct timespec *tstamp,
++ unsigned long resolution);
++
+ static int snd_timer_dev_disconnect(struct snd_device *device)
+ {
+ struct snd_timer *timer = device->device_data;
++ struct snd_timer_instance *ti;
++
+ mutex_lock(®ister_mutex);
+ list_del_init(&timer->device_list);
++ /* wake up pending sleepers */
++ list_for_each_entry(ti, &timer->open_list_head, open_list) {
++ /* FIXME: better to have a ti.disconnect() op */
++ if (ti->ccallback == snd_timer_user_ccallback) {
++ struct snd_timer_user *tu = ti->callback_data;
++
++ tu->disconnected = true;
++ wake_up(&tu->qchange_sleep);
++ }
++ }
+ mutex_unlock(®ister_mutex);
+ return 0;
+ }
+@@ -889,6 +937,8 @@ void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstam
+ unsigned long resolution = 0;
+ struct snd_timer_instance *ti, *ts;
+
++ if (timer->card && timer->card->shutdown)
++ return;
+ if (! (timer->hw.flags & SNDRV_TIMER_HW_SLAVE))
+ return;
+ if (snd_BUG_ON(event < SNDRV_TIMER_EVENT_MSTART ||
+@@ -1047,6 +1097,8 @@ static void snd_timer_proc_read(struct snd_info_entry *entry,
+
+ mutex_lock(®ister_mutex);
+ list_for_each_entry(timer, &snd_timer_list, device_list) {
++ if (timer->card && timer->card->shutdown)
++ continue;
+ switch (timer->tmr_class) {
+ case SNDRV_TIMER_CLASS_GLOBAL:
+ snd_iprintf(buffer, "G%i: ", timer->tmr_device);
+@@ -1253,7 +1305,7 @@ static int snd_timer_user_open(struct inode *inode, struct file *file)
+ return -ENOMEM;
+ spin_lock_init(&tu->qlock);
+ init_waitqueue_head(&tu->qchange_sleep);
+- mutex_init(&tu->tread_sem);
++ mutex_init(&tu->ioctl_lock);
+ tu->ticks = 1;
+ tu->queue_size = 128;
+ tu->queue = kmalloc(tu->queue_size * sizeof(struct snd_timer_read),
+@@ -1273,8 +1325,10 @@ static int snd_timer_user_release(struct inode *inode, struct file *file)
+ if (file->private_data) {
+ tu = file->private_data;
+ file->private_data = NULL;
++ mutex_lock(&tu->ioctl_lock);
+ if (tu->timeri)
+ snd_timer_close(tu->timeri);
++ mutex_unlock(&tu->ioctl_lock);
+ kfree(tu->queue);
+ kfree(tu->tqueue);
+ kfree(tu);
+@@ -1512,7 +1566,6 @@ static int snd_timer_user_tselect(struct file *file,
+ int err = 0;
+
+ tu = file->private_data;
+- mutex_lock(&tu->tread_sem);
+ if (tu->timeri) {
+ snd_timer_close(tu->timeri);
+ tu->timeri = NULL;
+@@ -1556,7 +1609,6 @@ static int snd_timer_user_tselect(struct file *file,
+ }
+
+ __err:
+- mutex_unlock(&tu->tread_sem);
+ return err;
+ }
+
+@@ -1769,7 +1821,7 @@ enum {
+ SNDRV_TIMER_IOCTL_PAUSE_OLD = _IO('T', 0x23),
+ };
+
+-static long snd_timer_user_ioctl(struct file *file, unsigned int cmd,
++static long __snd_timer_user_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+ {
+ struct snd_timer_user *tu;
+@@ -1786,17 +1838,11 @@ static long snd_timer_user_ioctl(struct file *file, unsigned int cmd,
+ {
+ int xarg;
+
+- mutex_lock(&tu->tread_sem);
+- if (tu->timeri) { /* too late */
+- mutex_unlock(&tu->tread_sem);
++ if (tu->timeri) /* too late */
+ return -EBUSY;
+- }
+- if (get_user(xarg, p)) {
+- mutex_unlock(&tu->tread_sem);
++ if (get_user(xarg, p))
+ return -EFAULT;
+- }
+ tu->tread = xarg ? 1 : 0;
+- mutex_unlock(&tu->tread_sem);
+ return 0;
+ }
+ case SNDRV_TIMER_IOCTL_GINFO:
+@@ -1829,6 +1875,18 @@ static long snd_timer_user_ioctl(struct file *file, unsigned int cmd,
+ return -ENOTTY;
+ }
+
++static long snd_timer_user_ioctl(struct file *file, unsigned int cmd,
++ unsigned long arg)
++{
++ struct snd_timer_user *tu = file->private_data;
++ long ret;
++
++ mutex_lock(&tu->ioctl_lock);
++ ret = __snd_timer_user_ioctl(file, cmd, arg);
++ mutex_unlock(&tu->ioctl_lock);
++ return ret;
++}
++
+ static int snd_timer_user_fasync(int fd, struct file * file, int on)
+ {
+ struct snd_timer_user *tu;
+@@ -1866,6 +1924,10 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
+
+ remove_wait_queue(&tu->qchange_sleep, &wait);
+
++ if (tu->disconnected) {
++ err = -ENODEV;
++ break;
++ }
+ if (signal_pending(current)) {
+ err = -ERESTARTSYS;
+ break;
+@@ -1915,6 +1977,8 @@ static unsigned int snd_timer_user_poll(struct file *file, poll_table * wait)
+ mask = 0;
+ if (tu->qused)
+ mask |= POLLIN | POLLRDNORM;
++ if (tu->disconnected)
++ mask |= POLLERR;
+
+ return mask;
+ }
+diff --git a/sound/firewire/bebob/Makefile b/sound/firewire/bebob/Makefile
+index 6cf470c80d1f..af7ed6643266 100644
+--- a/sound/firewire/bebob/Makefile
++++ b/sound/firewire/bebob/Makefile
+@@ -1,4 +1,4 @@
+ snd-bebob-objs := bebob_command.o bebob_stream.o bebob_proc.o bebob_midi.o \
+ bebob_pcm.o bebob_hwdep.o bebob_terratec.o bebob_yamaha.o \
+ bebob_focusrite.o bebob_maudio.o bebob.o
+-obj-m += snd-bebob.o
++obj-$(CONFIG_SND_BEBOB) += snd-bebob.o
+diff --git a/sound/firewire/dice/Makefile b/sound/firewire/dice/Makefile
+index 9ef228ef7baf..55b4be9b0034 100644
+--- a/sound/firewire/dice/Makefile
++++ b/sound/firewire/dice/Makefile
+@@ -1,3 +1,3 @@
+ snd-dice-objs := dice-transaction.o dice-stream.o dice-proc.o dice-midi.o \
+ dice-pcm.o dice-hwdep.o dice.o
+-obj-m += snd-dice.o
++obj-$(CONFIG_SND_DICE) += snd-dice.o
+diff --git a/sound/firewire/fireworks/Makefile b/sound/firewire/fireworks/Makefile
+index 0c7440826db8..15ef7f75a8ef 100644
+--- a/sound/firewire/fireworks/Makefile
++++ b/sound/firewire/fireworks/Makefile
+@@ -1,4 +1,4 @@
+ snd-fireworks-objs := fireworks_transaction.o fireworks_command.o \
+ fireworks_stream.o fireworks_proc.o fireworks_midi.o \
+ fireworks_pcm.o fireworks_hwdep.o fireworks.o
+-obj-m += snd-fireworks.o
++obj-$(CONFIG_SND_FIREWORKS) += snd-fireworks.o
+diff --git a/sound/firewire/oxfw/Makefile b/sound/firewire/oxfw/Makefile
+index a926850864f6..06ff50f4e6c0 100644
+--- a/sound/firewire/oxfw/Makefile
++++ b/sound/firewire/oxfw/Makefile
+@@ -1,3 +1,3 @@
+ snd-oxfw-objs := oxfw-command.o oxfw-stream.o oxfw-control.o oxfw-pcm.o \
+ oxfw-proc.o oxfw-midi.o oxfw-hwdep.o oxfw.o
+-obj-m += snd-oxfw.o
++obj-$(CONFIG_SND_OXFW) += snd-oxfw.o
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index 44dfc7b92bc3..09920ba55ba1 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -329,6 +329,7 @@ enum {
+
+ #define AZX_DCAPS_PRESET_CTHDA \
+ (AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB |\
++ AZX_DCAPS_NO_64BIT |\
+ AZX_DCAPS_4K_BDLE_BOUNDARY | AZX_DCAPS_SNOOP_OFF)
+
+ /*
+@@ -839,6 +840,36 @@ static int azx_resume(struct device *dev)
+ }
+ #endif /* CONFIG_PM_SLEEP || SUPPORT_VGA_SWITCHEROO */
+
++#ifdef CONFIG_PM_SLEEP
++/* put codec down to D3 at hibernation for Intel SKL+;
++ * otherwise BIOS may still access the codec and screw up the driver
++ */
++#define IS_SKL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa170)
++#define IS_SKL_LP(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9d70)
++#define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
++#define IS_SKL_PLUS(pci) (IS_SKL(pci) || IS_SKL_LP(pci) || IS_BXT(pci))
++
++static int azx_freeze_noirq(struct device *dev)
++{
++ struct pci_dev *pci = to_pci_dev(dev);
++
++ if (IS_SKL_PLUS(pci))
++ pci_set_power_state(pci, PCI_D3hot);
++
++ return 0;
++}
++
++static int azx_thaw_noirq(struct device *dev)
++{
++ struct pci_dev *pci = to_pci_dev(dev);
++
++ if (IS_SKL_PLUS(pci))
++ pci_set_power_state(pci, PCI_D0);
++
++ return 0;
++}
++#endif /* CONFIG_PM_SLEEP */
++
+ #ifdef CONFIG_PM
+ static int azx_runtime_suspend(struct device *dev)
+ {
+@@ -939,6 +970,10 @@ static int azx_runtime_idle(struct device *dev)
+
+ static const struct dev_pm_ops azx_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
++#ifdef CONFIG_PM_SLEEP
++ .freeze_noirq = azx_freeze_noirq,
++ .thaw_noirq = azx_thaw_noirq,
++#endif
+ SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
+ };
+
+@@ -1937,9 +1972,17 @@ out_free:
+ static void azx_remove(struct pci_dev *pci)
+ {
+ struct snd_card *card = pci_get_drvdata(pci);
++ struct azx *chip;
++ struct hda_intel *hda;
++
++ if (card) {
++ /* flush the pending probing work */
++ chip = card->private_data;
++ hda = container_of(chip, struct hda_intel, chip);
++ flush_work(&hda->probe_work);
+
+- if (card)
+ snd_card_free(card);
++ }
+ }
+
+ static void azx_shutdown(struct pci_dev *pci)
+@@ -1976,6 +2019,11 @@ static const struct pci_device_id azx_ids[] = {
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
+ { PCI_DEVICE(0x8086, 0x8d21),
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
++ /* Lewisburg */
++ { PCI_DEVICE(0x8086, 0xa1f0),
++ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
++ { PCI_DEVICE(0x8086, 0xa270),
++ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
+ /* Lynx Point-LP */
+ { PCI_DEVICE(0x8086, 0x9c20),
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
+@@ -2156,11 +2204,13 @@ static const struct pci_device_id azx_ids[] = {
+ .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
+ .class_mask = 0xffffff,
+ .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
++ AZX_DCAPS_NO_64BIT |
+ AZX_DCAPS_RIRB_PRE_DELAY | AZX_DCAPS_POSFIX_LPIB },
+ #else
+ /* this entry seems still valid -- i.e. without emu20kx chip */
+ { PCI_DEVICE(0x1102, 0x0009),
+ .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
++ AZX_DCAPS_NO_64BIT |
+ AZX_DCAPS_RIRB_PRE_DELAY | AZX_DCAPS_POSFIX_LPIB },
+ #endif
+ /* CM8888 */
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 57bb5a559f8e..8189f02f8446 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -111,6 +111,7 @@ struct alc_spec {
+ void (*power_hook)(struct hda_codec *codec);
+ #endif
+ void (*shutup)(struct hda_codec *codec);
++ void (*reboot_notify)(struct hda_codec *codec);
+
+ int init_amp;
+ int codec_variant; /* flag for other variants */
+@@ -773,6 +774,25 @@ static inline void alc_shutup(struct hda_codec *codec)
+ snd_hda_shutup_pins(codec);
+ }
+
++static void alc_reboot_notify(struct hda_codec *codec)
++{
++ struct alc_spec *spec = codec->spec;
++
++ if (spec && spec->reboot_notify)
++ spec->reboot_notify(codec);
++ else
++ alc_shutup(codec);
++}
++
++/* power down codec to D3 at reboot/shutdown; set as reboot_notify ops */
++static void alc_d3_at_reboot(struct hda_codec *codec)
++{
++ snd_hda_codec_set_power_to_all(codec, codec->core.afg, AC_PWRST_D3);
++ snd_hda_codec_write(codec, codec->core.afg, 0,
++ AC_VERB_SET_POWER_STATE, AC_PWRST_D3);
++ msleep(10);
++}
++
+ #define alc_free snd_hda_gen_free
+
+ #ifdef CONFIG_PM
+@@ -818,7 +838,7 @@ static const struct hda_codec_ops alc_patch_ops = {
+ .suspend = alc_suspend,
+ .check_power_status = snd_hda_gen_check_power_status,
+ #endif
+- .reboot_notify = alc_shutup,
++ .reboot_notify = alc_reboot_notify,
+ };
+
+
+@@ -1767,10 +1787,12 @@ enum {
+ ALC889_FIXUP_MBA11_VREF,
+ ALC889_FIXUP_MBA21_VREF,
+ ALC889_FIXUP_MP11_VREF,
++ ALC889_FIXUP_MP41_VREF,
+ ALC882_FIXUP_INV_DMIC,
+ ALC882_FIXUP_NO_PRIMARY_HP,
+ ALC887_FIXUP_ASUS_BASS,
+ ALC887_FIXUP_BASS_CHMAP,
++ ALC882_FIXUP_DISABLE_AAMIX,
+ };
+
+ static void alc889_fixup_coef(struct hda_codec *codec,
+@@ -1854,7 +1876,7 @@ static void alc889_fixup_mbp_vref(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+ {
+ struct alc_spec *spec = codec->spec;
+- static hda_nid_t nids[2] = { 0x14, 0x15 };
++ static hda_nid_t nids[3] = { 0x14, 0x15, 0x19 };
+ int i;
+
+ if (action != HDA_FIXUP_ACT_INIT)
+@@ -1932,6 +1954,8 @@ static void alc882_fixup_no_primary_hp(struct hda_codec *codec,
+
+ static void alc_fixup_bass_chmap(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action);
++static void alc_fixup_disable_aamix(struct hda_codec *codec,
++ const struct hda_fixup *fix, int action);
+
+ static const struct hda_fixup alc882_fixups[] = {
+ [ALC882_FIXUP_ABIT_AW9D_MAX] = {
+@@ -2142,6 +2166,12 @@ static const struct hda_fixup alc882_fixups[] = {
+ .chained = true,
+ .chain_id = ALC885_FIXUP_MACPRO_GPIO,
+ },
++ [ALC889_FIXUP_MP41_VREF] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc889_fixup_mbp_vref,
++ .chained = true,
++ .chain_id = ALC885_FIXUP_MACPRO_GPIO,
++ },
+ [ALC882_FIXUP_INV_DMIC] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_inv_dmic,
+@@ -2163,6 +2193,10 @@ static const struct hda_fixup alc882_fixups[] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_bass_chmap,
+ },
++ [ALC882_FIXUP_DISABLE_AAMIX] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_disable_aamix,
++ },
+ };
+
+ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+@@ -2220,7 +2254,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x106b, 0x3f00, "Macbook 5,1", ALC889_FIXUP_IMAC91_VREF),
+ SND_PCI_QUIRK(0x106b, 0x4000, "MacbookPro 5,1", ALC889_FIXUP_IMAC91_VREF),
+ SND_PCI_QUIRK(0x106b, 0x4100, "Macmini 3,1", ALC889_FIXUP_IMAC91_VREF),
+- SND_PCI_QUIRK(0x106b, 0x4200, "Mac Pro 5,1", ALC885_FIXUP_MACPRO_GPIO),
++ SND_PCI_QUIRK(0x106b, 0x4200, "Mac Pro 4,1/5,1", ALC889_FIXUP_MP41_VREF),
+ SND_PCI_QUIRK(0x106b, 0x4300, "iMac 9,1", ALC889_FIXUP_IMAC91_VREF),
+ SND_PCI_QUIRK(0x106b, 0x4600, "MacbookPro 5,2", ALC889_FIXUP_IMAC91_VREF),
+ SND_PCI_QUIRK(0x106b, 0x4900, "iMac 9,1 Aluminum", ALC889_FIXUP_IMAC91_VREF),
+@@ -2230,6 +2264,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
+ SND_PCI_QUIRK_VENDOR(0x1462, "MSI", ALC882_FIXUP_GPIO3),
+ SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte EP45-DS3/Z87X-UD3H", ALC889_FIXUP_FRONT_HP_NO_PRESENCE),
++ SND_PCI_QUIRK(0x1458, 0xa182, "Gigabyte Z170X-UD3", ALC882_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x147b, 0x107a, "Abit AW9D-MAX", ALC882_FIXUP_ABIT_AW9D_MAX),
+ SND_PCI_QUIRK_VENDOR(0x1558, "Clevo laptop", ALC882_FIXUP_EAPD),
+ SND_PCI_QUIRK(0x161f, 0x2054, "Medion laptop", ALC883_FIXUP_EAPD),
+@@ -4194,6 +4229,8 @@ static void alc_fixup_tpt440_dock(struct hda_codec *codec,
+ struct alc_spec *spec = codec->spec;
+
+ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
++ spec->shutup = alc_no_shutup; /* reduce click noise */
++ spec->reboot_notify = alc_d3_at_reboot; /* reduce noise */
+ spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP;
+ codec->power_save_node = 0; /* avoid click noises */
+ snd_hda_apply_pincfgs(codec, pincfgs);
+@@ -4525,6 +4562,7 @@ enum {
+ ALC255_FIXUP_HEADSET_MODE_NO_HP_MIC,
+ ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC292_FIXUP_TPT440_DOCK,
++ ALC292_FIXUP_TPT440,
+ ALC283_FIXUP_BXBT2807_MIC,
+ ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED,
+ ALC282_FIXUP_ASPIRE_V5_PINS,
+@@ -4993,6 +5031,12 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST
+ },
++ [ALC292_FIXUP_TPT440] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_disable_aamix,
++ .chained = true,
++ .chain_id = ALC292_FIXUP_TPT440_DOCK,
++ },
+ [ALC283_FIXUP_BXBT2807_MIC] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+@@ -5107,6 +5151,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1025, 0x0742, "Acer AO756", ALC271_FIXUP_HP_GATE_MIC_JACK),
+ SND_PCI_QUIRK(0x1025, 0x0775, "Acer Aspire E1-572", ALC271_FIXUP_HP_GATE_MIC_JACK_E1_572),
+ SND_PCI_QUIRK(0x1025, 0x079b, "Acer Aspire V5-573G", ALC282_FIXUP_ASPIRE_V5_PINS),
++ SND_PCI_QUIRK(0x1025, 0x106d, "Acer Cloudbook 14", ALC283_FIXUP_CHROME_BOOK),
+ SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z),
+ SND_PCI_QUIRK(0x1028, 0x05ca, "Dell Latitude E7240", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x05cb, "Dell Latitude E7440", ALC292_FIXUP_DELL_E7X),
+@@ -5116,6 +5161,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x05f6, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x0615, "Dell Vostro 5470", ALC290_FIXUP_SUBWOOFER_HSJACK),
+ SND_PCI_QUIRK(0x1028, 0x0616, "Dell Vostro 5470", ALC290_FIXUP_SUBWOOFER_HSJACK),
++ SND_PCI_QUIRK(0x1028, 0x062c, "Dell Latitude E5550", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x062e, "Dell Latitude E7450", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x0638, "Dell Inspiron 5439", ALC290_FIXUP_MONO_SPEAKERS_HSJACK),
+ SND_PCI_QUIRK(0x1028, 0x064a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+@@ -5227,12 +5273,13 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x21fb, "Thinkpad T430s", ALC269_FIXUP_LENOVO_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2203, "Thinkpad X230 Tablet", ALC269_FIXUP_LENOVO_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2208, "Thinkpad T431s", ALC269_FIXUP_LENOVO_DOCK),
+- SND_PCI_QUIRK(0x17aa, 0x220c, "Thinkpad T440s", ALC292_FIXUP_TPT440_DOCK),
++ SND_PCI_QUIRK(0x17aa, 0x220c, "Thinkpad T440s", ALC292_FIXUP_TPT440),
+ SND_PCI_QUIRK(0x17aa, 0x220e, "Thinkpad T440p", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2210, "Thinkpad T540p", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2212, "Thinkpad T440", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2214, "Thinkpad X240", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2215, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
++ SND_PCI_QUIRK(0x17aa, 0x2218, "Thinkpad X1 Carbon 2nd", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2223, "ThinkPad T550", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
+@@ -5322,6 +5369,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ {.id = ALC283_FIXUP_CHROME_BOOK, .name = "alc283-dac-wcaps"},
+ {.id = ALC283_FIXUP_SENSE_COMBO_JACK, .name = "alc283-sense-combo"},
+ {.id = ALC292_FIXUP_TPT440_DOCK, .name = "tpt440-dock"},
++ {.id = ALC292_FIXUP_TPT440, .name = "tpt440"},
+ {}
+ };
+
+@@ -5448,6 +5496,10 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC255_STANDARD_PINS,
+ {0x12, 0x90a60170},
++ {0x14, 0x90171130},
++ {0x21, 0x02211040}),
++ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x12, 0x90a60170},
+ {0x14, 0x90170140},
+ {0x17, 0x40000000},
+ {0x1d, 0x40700001},
+@@ -6456,6 +6508,7 @@ static const struct hda_fixup alc662_fixups[] = {
+ static const struct snd_pci_quirk alc662_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1019, 0x9087, "ECS", ALC662_FIXUP_ASUS_MODE2),
+ SND_PCI_QUIRK(0x1025, 0x022f, "Acer Aspire One", ALC662_FIXUP_INV_DMIC),
++ SND_PCI_QUIRK(0x1025, 0x0241, "Packard Bell DOTS", ALC662_FIXUP_INV_DMIC),
+ SND_PCI_QUIRK(0x1025, 0x0308, "Acer Aspire 8942G", ALC662_FIXUP_ASPIRE),
+ SND_PCI_QUIRK(0x1025, 0x031c, "Gateway NV79", ALC662_FIXUP_SKU_IGNORE),
+ SND_PCI_QUIRK(0x1025, 0x0349, "eMachines eM250", ALC662_FIXUP_INV_DMIC),
+@@ -6473,6 +6526,7 @@ static const struct snd_pci_quirk alc662_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x069f, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1632, "HP RP5800", ALC662_FIXUP_HP_RP5800),
+ SND_PCI_QUIRK(0x1043, 0x11cd, "Asus N550", ALC662_FIXUP_BASS_1A),
++ SND_PCI_QUIRK(0x1043, 0x13df, "Asus N550JX", ALC662_FIXUP_BASS_1A),
+ SND_PCI_QUIRK(0x1043, 0x1477, "ASUS N56VZ", ALC662_FIXUP_BASS_MODE4_CHMAP),
+ SND_PCI_QUIRK(0x1043, 0x15a7, "ASUS UX51VZH", ALC662_FIXUP_BASS_16),
+ SND_PCI_QUIRK(0x1043, 0x1b73, "ASUS N55SF", ALC662_FIXUP_BASS_16),
+diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
+index b1bc66783974..8e7d4c087a7a 100644
+--- a/sound/pci/hda/patch_sigmatel.c
++++ b/sound/pci/hda/patch_sigmatel.c
+@@ -702,6 +702,7 @@ static bool hp_bnb2011_with_dock(struct hda_codec *codec)
+ static bool hp_blike_system(u32 subsystem_id)
+ {
+ switch (subsystem_id) {
++ case 0x103c1473: /* HP ProBook 6550b */
+ case 0x103c1520:
+ case 0x103c1521:
+ case 0x103c1523:
+@@ -3109,6 +3110,29 @@ static void stac92hd71bxx_fixup_hp_hdx(struct hda_codec *codec,
+ spec->gpio_led = 0x08;
+ }
+
++static bool is_hp_output(struct hda_codec *codec, hda_nid_t pin)
++{
++ unsigned int pin_cfg = snd_hda_codec_get_pincfg(codec, pin);
++
++ /* count line-out, too, as BIOS sets often so */
++ return get_defcfg_connect(pin_cfg) != AC_JACK_PORT_NONE &&
++ (get_defcfg_device(pin_cfg) == AC_JACK_LINE_OUT ||
++ get_defcfg_device(pin_cfg) == AC_JACK_HP_OUT);
++}
++
++static void fixup_hp_headphone(struct hda_codec *codec, hda_nid_t pin)
++{
++ unsigned int pin_cfg = snd_hda_codec_get_pincfg(codec, pin);
++
++ /* It was changed in the BIOS to just satisfy MS DTM.
++ * Lets turn it back into slaved HP
++ */
++ pin_cfg = (pin_cfg & (~AC_DEFCFG_DEVICE)) |
++ (AC_JACK_HP_OUT << AC_DEFCFG_DEVICE_SHIFT);
++ pin_cfg = (pin_cfg & (~(AC_DEFCFG_DEF_ASSOC | AC_DEFCFG_SEQUENCE))) |
++ 0x1f;
++ snd_hda_codec_set_pincfg(codec, pin, pin_cfg);
++}
+
+ static void stac92hd71bxx_fixup_hp(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+@@ -3118,22 +3142,12 @@ static void stac92hd71bxx_fixup_hp(struct hda_codec *codec,
+ if (action != HDA_FIXUP_ACT_PRE_PROBE)
+ return;
+
+- if (hp_blike_system(codec->core.subsystem_id)) {
+- unsigned int pin_cfg = snd_hda_codec_get_pincfg(codec, 0x0f);
+- if (get_defcfg_device(pin_cfg) == AC_JACK_LINE_OUT ||
+- get_defcfg_device(pin_cfg) == AC_JACK_SPEAKER ||
+- get_defcfg_device(pin_cfg) == AC_JACK_HP_OUT) {
+- /* It was changed in the BIOS to just satisfy MS DTM.
+- * Lets turn it back into slaved HP
+- */
+- pin_cfg = (pin_cfg & (~AC_DEFCFG_DEVICE))
+- | (AC_JACK_HP_OUT <<
+- AC_DEFCFG_DEVICE_SHIFT);
+- pin_cfg = (pin_cfg & (~(AC_DEFCFG_DEF_ASSOC
+- | AC_DEFCFG_SEQUENCE)))
+- | 0x1f;
+- snd_hda_codec_set_pincfg(codec, 0x0f, pin_cfg);
+- }
++ /* when both output A and F are assigned, these are supposedly
++ * dock and built-in headphones; fix both pin configs
++ */
++ if (is_hp_output(codec, 0x0a) && is_hp_output(codec, 0x0f)) {
++ fixup_hp_headphone(codec, 0x0a);
++ fixup_hp_headphone(codec, 0x0f);
+ }
+
+ if (find_mute_led_cfg(codec, 1))
+diff --git a/sound/pci/rme96.c b/sound/pci/rme96.c
+index 2306ccf7281e..77c963ced67a 100644
+--- a/sound/pci/rme96.c
++++ b/sound/pci/rme96.c
+@@ -741,10 +741,11 @@ snd_rme96_playback_setrate(struct rme96 *rme96,
+ {
+ /* change to/from double-speed: reset the DAC (if available) */
+ snd_rme96_reset_dac(rme96);
++ return 1; /* need to restore volume */
+ } else {
+ writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
++ return 0;
+ }
+- return 0;
+ }
+
+ static int
+@@ -980,6 +981,7 @@ snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
+ struct rme96 *rme96 = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err, rate, dummy;
++ bool apply_dac_volume = false;
+
+ runtime->dma_area = (void __force *)(rme96->iobase +
+ RME96_IO_PLAY_BUFFER);
+@@ -993,24 +995,26 @@ snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
+ {
+ /* slave clock */
+ if ((int)params_rate(params) != rate) {
+- spin_unlock_irq(&rme96->lock);
+- return -EIO;
+- }
+- } else if ((err = snd_rme96_playback_setrate(rme96, params_rate(params))) < 0) {
+- spin_unlock_irq(&rme96->lock);
+- return err;
+- }
+- if ((err = snd_rme96_playback_setformat(rme96, params_format(params))) < 0) {
+- spin_unlock_irq(&rme96->lock);
+- return err;
++ err = -EIO;
++ goto error;
++ }
++ } else {
++ err = snd_rme96_playback_setrate(rme96, params_rate(params));
++ if (err < 0)
++ goto error;
++ apply_dac_volume = err > 0; /* need to restore volume later? */
+ }
++
++ err = snd_rme96_playback_setformat(rme96, params_format(params));
++ if (err < 0)
++ goto error;
+ snd_rme96_setframelog(rme96, params_channels(params), 1);
+ if (rme96->capture_periodsize != 0) {
+ if (params_period_size(params) << rme96->playback_frlog !=
+ rme96->capture_periodsize)
+ {
+- spin_unlock_irq(&rme96->lock);
+- return -EBUSY;
++ err = -EBUSY;
++ goto error;
+ }
+ }
+ rme96->playback_periodsize =
+@@ -1021,9 +1025,16 @@ snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
+ rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
+ writel(rme96->wcreg |= rme96->wcreg_spdif_stream, rme96->iobase + RME96_IO_CONTROL_REGISTER);
+ }
++
++ err = 0;
++ error:
+ spin_unlock_irq(&rme96->lock);
+-
+- return 0;
++ if (apply_dac_volume) {
++ usleep_range(3000, 10000);
++ snd_rme96_apply_dac_volume(rme96);
++ }
++
++ return err;
+ }
+
+ static int
+diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
+index ee91edcf3cb0..13191891fc4c 100644
+--- a/sound/soc/codecs/arizona.c
++++ b/sound/soc/codecs/arizona.c
+@@ -1354,7 +1354,7 @@ static int arizona_hw_params(struct snd_pcm_substream *substream,
+ bool reconfig;
+ unsigned int aif_tx_state, aif_rx_state;
+
+- if (params_rate(params) % 8000)
++ if (params_rate(params) % 4000)
+ rates = &arizona_44k1_bclk_rates[0];
+ else
+ rates = &arizona_48k_bclk_rates[0];
+diff --git a/sound/soc/codecs/es8328.c b/sound/soc/codecs/es8328.c
+index c5f35a07e8e4..3ad7f5be1cfa 100644
+--- a/sound/soc/codecs/es8328.c
++++ b/sound/soc/codecs/es8328.c
+@@ -85,7 +85,15 @@ static const DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
+ static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
+ static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 300, 0);
+
+-static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
++static const struct {
++ int rate;
++ unsigned int val;
++} deemph_settings[] = {
++ { 0, ES8328_DACCONTROL6_DEEMPH_OFF },
++ { 32000, ES8328_DACCONTROL6_DEEMPH_32k },
++ { 44100, ES8328_DACCONTROL6_DEEMPH_44_1k },
++ { 48000, ES8328_DACCONTROL6_DEEMPH_48k },
++};
+
+ static int es8328_set_deemph(struct snd_soc_codec *codec)
+ {
+@@ -97,21 +105,22 @@ static int es8328_set_deemph(struct snd_soc_codec *codec)
+ * rate.
+ */
+ if (es8328->deemph) {
+- best = 1;
+- for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
+- if (abs(deemph_settings[i] - es8328->playback_fs) <
+- abs(deemph_settings[best] - es8328->playback_fs))
++ best = 0;
++ for (i = 1; i < ARRAY_SIZE(deemph_settings); i++) {
++ if (abs(deemph_settings[i].rate - es8328->playback_fs) <
++ abs(deemph_settings[best].rate - es8328->playback_fs))
+ best = i;
+ }
+
+- val = best << 1;
++ val = deemph_settings[best].val;
+ } else {
+- val = 0;
++ val = ES8328_DACCONTROL6_DEEMPH_OFF;
+ }
+
+ dev_dbg(codec->dev, "Set deemphasis %d\n", val);
+
+- return snd_soc_update_bits(codec, ES8328_DACCONTROL6, 0x6, val);
++ return snd_soc_update_bits(codec, ES8328_DACCONTROL6,
++ ES8328_DACCONTROL6_DEEMPH_MASK, val);
+ }
+
+ static int es8328_get_deemph(struct snd_kcontrol *kcontrol,
+diff --git a/sound/soc/codecs/es8328.h b/sound/soc/codecs/es8328.h
+index cb36afe10c0e..156c748c89c7 100644
+--- a/sound/soc/codecs/es8328.h
++++ b/sound/soc/codecs/es8328.h
+@@ -153,6 +153,7 @@ int es8328_probe(struct device *dev, struct regmap *regmap);
+ #define ES8328_DACCONTROL6_CLICKFREE (1 << 3)
+ #define ES8328_DACCONTROL6_DAC_INVR (1 << 4)
+ #define ES8328_DACCONTROL6_DAC_INVL (1 << 5)
++#define ES8328_DACCONTROL6_DEEMPH_MASK (3 << 6)
+ #define ES8328_DACCONTROL6_DEEMPH_OFF (0 << 6)
+ #define ES8328_DACCONTROL6_DEEMPH_32k (1 << 6)
+ #define ES8328_DACCONTROL6_DEEMPH_44_1k (2 << 6)
+diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
+index 118b0034ba23..154c1a24a303 100644
+--- a/sound/soc/codecs/wm8962.c
++++ b/sound/soc/codecs/wm8962.c
+@@ -365,8 +365,8 @@ static struct reg_default wm8962_reg[] = {
+ { 16924, 0x0059 }, /* R16924 - HDBASS_PG_1 */
+ { 16925, 0x999A }, /* R16925 - HDBASS_PG_0 */
+
+- { 17048, 0x0083 }, /* R17408 - HPF_C_1 */
+- { 17049, 0x98AD }, /* R17409 - HPF_C_0 */
++ { 17408, 0x0083 }, /* R17408 - HPF_C_1 */
++ { 17409, 0x98AD }, /* R17409 - HPF_C_0 */
+
+ { 17920, 0x007F }, /* R17920 - ADCL_RETUNE_C1_1 */
+ { 17921, 0xFFFF }, /* R17921 - ADCL_RETUNE_C1_0 */
+diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c
+index ff0e4646b934..88317c1b7f96 100644
+--- a/sound/soc/codecs/wm8974.c
++++ b/sound/soc/codecs/wm8974.c
+@@ -575,6 +575,7 @@ static const struct regmap_config wm8974_regmap = {
+ .max_register = WM8974_MONOMIX,
+ .reg_defaults = wm8974_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8974_reg_defaults),
++ .cache_type = REGCACHE_FLAT,
+ };
+
+ static int wm8974_probe(struct snd_soc_codec *codec)
+diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
+index 23c91fa65ab8..76dd8c6aa4f0 100644
+--- a/sound/soc/davinci/davinci-mcasp.c
++++ b/sound/soc/davinci/davinci-mcasp.c
+@@ -221,8 +221,8 @@ static void mcasp_start_tx(struct davinci_mcasp *mcasp)
+
+ /* wait for XDATA to be cleared */
+ cnt = 0;
+- while (!(mcasp_get_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG) &
+- ~XRDATA) && (cnt < 100000))
++ while ((mcasp_get_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG) & XRDATA) &&
++ (cnt < 100000))
+ cnt++;
+
+ /* Release TX state machine */
+diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
+index 8c7dc51b1c4f..f7a0cb786d5c 100644
+--- a/sound/soc/sh/rcar/gen.c
++++ b/sound/soc/sh/rcar/gen.c
+@@ -214,7 +214,7 @@ static int rsnd_gen2_probe(struct platform_device *pdev,
+ RSND_GEN_S_REG(SCU_SYS_STATUS0, 0x1c8),
+ RSND_GEN_S_REG(SCU_SYS_INT_EN0, 0x1cc),
+ RSND_GEN_S_REG(SCU_SYS_STATUS1, 0x1d0),
+- RSND_GEN_S_REG(SCU_SYS_INT_EN1, 0x1c4),
++ RSND_GEN_S_REG(SCU_SYS_INT_EN1, 0x1d4),
+ RSND_GEN_M_REG(SRC_SWRSR, 0x200, 0x40),
+ RSND_GEN_M_REG(SRC_SRCIR, 0x204, 0x40),
+ RSND_GEN_M_REG(SRC_ADINR, 0x214, 0x40),
+diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
+index 025c38fbe3c0..1874cf0e6cab 100644
+--- a/sound/soc/soc-compress.c
++++ b/sound/soc/soc-compress.c
+@@ -623,6 +623,7 @@ int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
+ struct snd_pcm *be_pcm;
+ char new_name[64];
+ int ret = 0, direction = 0;
++ int playback = 0, capture = 0;
+
+ if (rtd->num_codecs > 1) {
+ dev_err(rtd->card->dev, "Multicodec not supported for compressed stream\n");
+@@ -634,11 +635,27 @@ int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
+ rtd->dai_link->stream_name, codec_dai->name, num);
+
+ if (codec_dai->driver->playback.channels_min)
++ playback = 1;
++ if (codec_dai->driver->capture.channels_min)
++ capture = 1;
++
++ capture = capture && cpu_dai->driver->capture.channels_min;
++ playback = playback && cpu_dai->driver->playback.channels_min;
++
++ /*
++ * Compress devices are unidirectional so only one of the directions
++ * should be set, check for that (xor)
++ */
++ if (playback + capture != 1) {
++ dev_err(rtd->card->dev, "Invalid direction for compress P %d, C %d\n",
++ playback, capture);
++ return -EINVAL;
++ }
++
++ if(playback)
+ direction = SND_COMPRESS_PLAYBACK;
+- else if (codec_dai->driver->capture.channels_min)
+- direction = SND_COMPRESS_CAPTURE;
+ else
+- return -EINVAL;
++ direction = SND_COMPRESS_CAPTURE;
+
+ compr = kzalloc(sizeof(*compr), GFP_KERNEL);
+ if (compr == NULL) {
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index cd8ed2e393a2..f9a9752d4dbc 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -1336,6 +1336,8 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
+ }
+ }
+
++ snd_usb_mixer_fu_apply_quirk(state->mixer, cval, unitid, kctl);
++
+ range = (cval->max - cval->min) / cval->res;
+ /*
+ * Are there devices with volume range more than 255? I use a bit more
+diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
+index 6a803eff87f7..ddca6547399b 100644
+--- a/sound/usb/mixer_maps.c
++++ b/sound/usb/mixer_maps.c
+@@ -348,13 +348,6 @@ static struct usbmix_name_map bose_companion5_map[] = {
+ { 0 } /* terminator */
+ };
+
+-/* Dragonfly DAC 1.2, the dB conversion factor is 1 instead of 256 */
+-static struct usbmix_dB_map dragonfly_1_2_dB = {0, 5000};
+-static struct usbmix_name_map dragonfly_1_2_map[] = {
+- { 7, NULL, .dB = &dragonfly_1_2_dB },
+- { 0 } /* terminator */
+-};
+-
+ /*
+ * Control map entries
+ */
+@@ -470,11 +463,6 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
+ .id = USB_ID(0x05a7, 0x1020),
+ .map = bose_companion5_map,
+ },
+- {
+- /* Dragonfly DAC 1.2 */
+- .id = USB_ID(0x21b4, 0x0081),
+- .map = dragonfly_1_2_map,
+- },
+ { 0 } /* terminator */
+ };
+
+diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
+index 337c317ead6f..db9547d04f38 100644
+--- a/sound/usb/mixer_quirks.c
++++ b/sound/usb/mixer_quirks.c
+@@ -37,6 +37,7 @@
+ #include <sound/control.h>
+ #include <sound/hwdep.h>
+ #include <sound/info.h>
++#include <sound/tlv.h>
+
+ #include "usbaudio.h"
+ #include "mixer.h"
+@@ -802,7 +803,7 @@ static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
+ return 0;
+
+ kcontrol->private_value &= ~(0xff << 24);
+- kcontrol->private_value |= newval;
++ kcontrol->private_value |= (unsigned int)newval << 24;
+ err = snd_ni_update_cur_val(list);
+ return err < 0 ? err : 1;
+ }
+@@ -1843,3 +1844,39 @@ void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
+ }
+ }
+
++static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer,
++ struct snd_kcontrol *kctl)
++{
++ /* Approximation using 10 ranges based on output measurement on hw v1.2.
++ * This seems close to the cubic mapping e.g. alsamixer uses. */
++ static const DECLARE_TLV_DB_RANGE(scale,
++ 0, 1, TLV_DB_MINMAX_ITEM(-5300, -4970),
++ 2, 5, TLV_DB_MINMAX_ITEM(-4710, -4160),
++ 6, 7, TLV_DB_MINMAX_ITEM(-3884, -3710),
++ 8, 14, TLV_DB_MINMAX_ITEM(-3443, -2560),
++ 15, 16, TLV_DB_MINMAX_ITEM(-2475, -2324),
++ 17, 19, TLV_DB_MINMAX_ITEM(-2228, -2031),
++ 20, 26, TLV_DB_MINMAX_ITEM(-1910, -1393),
++ 27, 31, TLV_DB_MINMAX_ITEM(-1322, -1032),
++ 32, 40, TLV_DB_MINMAX_ITEM(-968, -490),
++ 41, 50, TLV_DB_MINMAX_ITEM(-441, 0),
++ );
++
++ usb_audio_info(mixer->chip, "applying DragonFly dB scale quirk\n");
++ kctl->tlv.p = scale;
++ kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
++ kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
++}
++
++void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
++ struct usb_mixer_elem_info *cval, int unitid,
++ struct snd_kcontrol *kctl)
++{
++ switch (mixer->chip->usb_id) {
++ case USB_ID(0x21b4, 0x0081): /* AudioQuest DragonFly */
++ if (unitid == 7 && cval->min == 0 && cval->max == 50)
++ snd_dragonfly_quirk_db_scale(mixer, kctl);
++ break;
++ }
++}
++
+diff --git a/sound/usb/mixer_quirks.h b/sound/usb/mixer_quirks.h
+index bdbfab093816..177c329cd4dd 100644
+--- a/sound/usb/mixer_quirks.h
++++ b/sound/usb/mixer_quirks.h
+@@ -9,5 +9,9 @@ void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
+ void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
+ int unitid);
+
++void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
++ struct usb_mixer_elem_info *cval, int unitid,
++ struct snd_kcontrol *kctl);
++
+ #endif /* SND_USB_MIXER_QUIRKS_H */
+
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index eef9b8e4b949..fb9a8a5787a6 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1122,6 +1122,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
+ case USB_ID(0x045E, 0x0779): /* MS Lifecam HD-3000 */
+ case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
+ case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
++ case USB_ID(0x21B4, 0x0081): /* AudioQuest DragonFly */
+ return true;
+ }
+ return false;
+@@ -1265,6 +1266,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
+ case USB_ID(0x20b1, 0x3008): /* iFi Audio micro/nano iDSD */
+ case USB_ID(0x20b1, 0x2008): /* Matrix Audio X-Sabre */
+ case USB_ID(0x20b1, 0x300a): /* Matrix Audio Mini-i Pro */
++ case USB_ID(0x22d8, 0x0416): /* OPPO HA-1*/
+ if (fp->altsetting == 2)
+ return SNDRV_PCM_FMTBIT_DSD_U32_BE;
+ break;
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-01-23 18:30 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-01-23 18:30 UTC (permalink / raw
To: gentoo-commits
commit: 4071022681de7405f4ef7b2778add1b9d08845cf
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sat Jan 23 18:30:39 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sat Jan 23 18:30:39 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=40710226
Linux 4.1.16. Includes patch for CVE-2016-0728
0000_README | 8 +-
1015_linux-4.1.16.patch | 1479 ++++++++++++++++++++
...ing-refleak-in-join-session-CVE-2016-0728.patch | 81 --
3 files changed, 1483 insertions(+), 85 deletions(-)
diff --git a/0000_README b/0000_README
index 18a8ebc..1ca97cd 100644
--- a/0000_README
+++ b/0000_README
@@ -103,6 +103,10 @@ Patch: 1014_linux-4.1.15.patch
From: http://www.kernel.org
Desc: Linux 4.1.15
+Patch: 1015_linux-4.1.16.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.16
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
@@ -111,10 +115,6 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
Desc: Enable link security restrictions by default.
-Patch: 1520_keyring-refleak-in-join-session-CVE-2016-0728.patch
-From: https://bugs.gentoo.org/show_bug.cgi?id=572384
-Desc: Ensure that thread joining a session keyring does not leak the keyring reference. CVE-2016-0728.
-
Patch: 2700_ThinkPad-30-brightness-control-fix.patch
From: Seth Forshee <seth.forshee@canonical.com>
Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
diff --git a/1015_linux-4.1.16.patch b/1015_linux-4.1.16.patch
new file mode 100644
index 0000000..44d7080
--- /dev/null
+++ b/1015_linux-4.1.16.patch
@@ -0,0 +1,1479 @@
+diff --git a/Makefile b/Makefile
+index cf35f6bcffd8..7609f1dcdcb9 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 15
++SUBLEVEL = 16
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
+index f8319a0860fd..39be5acc9c48 100644
+--- a/drivers/char/tpm/tpm.h
++++ b/drivers/char/tpm/tpm.h
+@@ -115,6 +115,13 @@ enum tpm2_startup_types {
+ TPM2_SU_STATE = 0x0001,
+ };
+
++enum tpm2_start_method {
++ TPM2_START_ACPI = 2,
++ TPM2_START_FIFO = 6,
++ TPM2_START_CRB = 7,
++ TPM2_START_CRB_WITH_ACPI = 8,
++};
++
+ struct tpm_chip;
+
+ struct tpm_vendor_specific {
+diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
+index 1267322595da..2b971b3e5c1c 100644
+--- a/drivers/char/tpm/tpm_crb.c
++++ b/drivers/char/tpm/tpm_crb.c
+@@ -34,12 +34,6 @@ enum crb_defaults {
+ CRB_ACPI_START_INDEX = 1,
+ };
+
+-enum crb_start_method {
+- CRB_SM_ACPI_START = 2,
+- CRB_SM_CRB = 7,
+- CRB_SM_CRB_WITH_ACPI_START = 8,
+-};
+-
+ struct acpi_tpm2 {
+ struct acpi_table_header hdr;
+ u16 platform_class;
+@@ -220,12 +214,6 @@ static int crb_acpi_add(struct acpi_device *device)
+ u64 pa;
+ int rc;
+
+- chip = tpmm_chip_alloc(dev, &tpm_crb);
+- if (IS_ERR(chip))
+- return PTR_ERR(chip);
+-
+- chip->flags = TPM_CHIP_FLAG_TPM2;
+-
+ status = acpi_get_table(ACPI_SIG_TPM2, 1,
+ (struct acpi_table_header **) &buf);
+ if (ACPI_FAILURE(status)) {
+@@ -233,13 +221,15 @@ static int crb_acpi_add(struct acpi_device *device)
+ return -ENODEV;
+ }
+
+- /* At least some versions of AMI BIOS have a bug that TPM2 table has
+- * zero address for the control area and therefore we must fail.
+- */
+- if (!buf->control_area_pa) {
+- dev_err(dev, "TPM2 ACPI table has a zero address for the control area\n");
+- return -EINVAL;
+- }
++ /* Should the FIFO driver handle this? */
++ if (buf->start_method == TPM2_START_FIFO)
++ return -ENODEV;
++
++ chip = tpmm_chip_alloc(dev, &tpm_crb);
++ if (IS_ERR(chip))
++ return PTR_ERR(chip);
++
++ chip->flags = TPM_CHIP_FLAG_TPM2;
+
+ if (buf->hdr.length < sizeof(struct acpi_tpm2)) {
+ dev_err(dev, "TPM2 ACPI table has wrong size");
+@@ -259,11 +249,11 @@ static int crb_acpi_add(struct acpi_device *device)
+ * report only ACPI start but in practice seems to require both
+ * ACPI start and CRB start.
+ */
+- if (sm == CRB_SM_CRB || sm == CRB_SM_CRB_WITH_ACPI_START ||
++ if (sm == TPM2_START_CRB || sm == TPM2_START_FIFO ||
+ !strcmp(acpi_device_hid(device), "MSFT0101"))
+ priv->flags |= CRB_FL_CRB_START;
+
+- if (sm == CRB_SM_ACPI_START || sm == CRB_SM_CRB_WITH_ACPI_START)
++ if (sm == TPM2_START_ACPI || sm == TPM2_START_CRB_WITH_ACPI)
+ priv->flags |= CRB_FL_ACPI_START;
+
+ priv->cca = (struct crb_control_area __iomem *)
+diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
+index f2dffa770b8e..696ef1d56b4f 100644
+--- a/drivers/char/tpm/tpm_tis.c
++++ b/drivers/char/tpm/tpm_tis.c
+@@ -1,6 +1,6 @@
+ /*
+ * Copyright (C) 2005, 2006 IBM Corporation
+- * Copyright (C) 2014 Intel Corporation
++ * Copyright (C) 2014, 2015 Intel Corporation
+ *
+ * Authors:
+ * Leendert van Doorn <leendert@watson.ibm.com>
+@@ -28,6 +28,7 @@
+ #include <linux/wait.h>
+ #include <linux/acpi.h>
+ #include <linux/freezer.h>
++#include <acpi/actbl2.h>
+ #include "tpm.h"
+
+ enum tis_access {
+@@ -65,6 +66,17 @@ enum tis_defaults {
+ TIS_LONG_TIMEOUT = 2000, /* 2 sec */
+ };
+
++struct tpm_info {
++ unsigned long start;
++ unsigned long len;
++ unsigned int irq;
++};
++
++static struct tpm_info tis_default_info = {
++ .start = TIS_MEM_BASE,
++ .len = TIS_MEM_LEN,
++ .irq = 0,
++};
+
+ /* Some timeout values are needed before it is known whether the chip is
+ * TPM 1.0 or TPM 2.0.
+@@ -91,26 +103,54 @@ struct priv_data {
+ };
+
+ #if defined(CONFIG_PNP) && defined(CONFIG_ACPI)
+-static int is_itpm(struct pnp_dev *dev)
++static int has_hid(struct acpi_device *dev, const char *hid)
+ {
+- struct acpi_device *acpi = pnp_acpi_device(dev);
+ struct acpi_hardware_id *id;
+
+- if (!acpi)
+- return 0;
+-
+- list_for_each_entry(id, &acpi->pnp.ids, list) {
+- if (!strcmp("INTC0102", id->id))
++ list_for_each_entry(id, &dev->pnp.ids, list)
++ if (!strcmp(hid, id->id))
+ return 1;
+- }
+
+ return 0;
+ }
++
++static inline int is_itpm(struct acpi_device *dev)
++{
++ return has_hid(dev, "INTC0102");
++}
++
++static inline int is_fifo(struct acpi_device *dev)
++{
++ struct acpi_table_tpm2 *tbl;
++ acpi_status st;
++
++ /* TPM 1.2 FIFO */
++ if (!has_hid(dev, "MSFT0101"))
++ return 1;
++
++ st = acpi_get_table(ACPI_SIG_TPM2, 1,
++ (struct acpi_table_header **) &tbl);
++ if (ACPI_FAILURE(st)) {
++ dev_err(&dev->dev, "failed to get TPM2 ACPI table\n");
++ return 0;
++ }
++
++ if (le32_to_cpu(tbl->start_method) != TPM2_START_FIFO)
++ return 0;
++
++ /* TPM 2.0 FIFO */
++ return 1;
++}
+ #else
+-static inline int is_itpm(struct pnp_dev *dev)
++static inline int is_itpm(struct acpi_device *dev)
+ {
+ return 0;
+ }
++
++static inline int is_fifo(struct acpi_device *dev)
++{
++ return 1;
++}
+ #endif
+
+ /* Before we attempt to access the TPM we must see that the valid bit is set.
+@@ -600,9 +640,8 @@ static void tpm_tis_remove(struct tpm_chip *chip)
+ release_locality(chip, chip->vendor.locality, 1);
+ }
+
+-static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
+- resource_size_t start, resource_size_t len,
+- unsigned int irq)
++static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
++ acpi_handle acpi_dev_handle)
+ {
+ u32 vendor, intfcaps, intmask;
+ int rc, i, irq_s, irq_e, probe;
+@@ -622,7 +661,7 @@ static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
+ chip->acpi_dev_handle = acpi_dev_handle;
+ #endif
+
+- chip->vendor.iobase = devm_ioremap(dev, start, len);
++ chip->vendor.iobase = devm_ioremap(dev, tpm_info->start, tpm_info->len);
+ if (!chip->vendor.iobase)
+ return -EIO;
+
+@@ -707,7 +746,7 @@ static int tpm_tis_init(struct device *dev, acpi_handle acpi_dev_handle,
+ chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+ if (interrupts)
+- chip->vendor.irq = irq;
++ chip->vendor.irq = tpm_info->irq;
+ if (interrupts && !chip->vendor.irq) {
+ irq_s =
+ ioread8(chip->vendor.iobase +
+@@ -890,27 +929,27 @@ static SIMPLE_DEV_PM_OPS(tpm_tis_pm, tpm_pm_suspend, tpm_tis_resume);
+ static int tpm_tis_pnp_init(struct pnp_dev *pnp_dev,
+ const struct pnp_device_id *pnp_id)
+ {
+- resource_size_t start, len;
+- unsigned int irq = 0;
++ struct tpm_info tpm_info = tis_default_info;
+ acpi_handle acpi_dev_handle = NULL;
+
+- start = pnp_mem_start(pnp_dev, 0);
+- len = pnp_mem_len(pnp_dev, 0);
++ tpm_info.start = pnp_mem_start(pnp_dev, 0);
++ tpm_info.len = pnp_mem_len(pnp_dev, 0);
+
+ if (pnp_irq_valid(pnp_dev, 0))
+- irq = pnp_irq(pnp_dev, 0);
++ tpm_info.irq = pnp_irq(pnp_dev, 0);
+ else
+ interrupts = false;
+
+- if (is_itpm(pnp_dev))
+- itpm = true;
+-
+ #ifdef CONFIG_ACPI
+- if (pnp_acpi_device(pnp_dev))
++ if (pnp_acpi_device(pnp_dev)) {
++ if (is_itpm(pnp_acpi_device(pnp_dev)))
++ itpm = true;
++
+ acpi_dev_handle = pnp_acpi_device(pnp_dev)->handle;
++ }
+ #endif
+
+- return tpm_tis_init(&pnp_dev->dev, acpi_dev_handle, start, len, irq);
++ return tpm_tis_init(&pnp_dev->dev, &tpm_info, acpi_dev_handle);
+ }
+
+ static struct pnp_device_id tpm_pnp_tbl[] = {
+@@ -930,6 +969,7 @@ MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
+ static void tpm_tis_pnp_remove(struct pnp_dev *dev)
+ {
+ struct tpm_chip *chip = pnp_get_drvdata(dev);
++
+ tpm_chip_unregister(chip);
+ tpm_tis_remove(chip);
+ }
+@@ -950,6 +990,79 @@ module_param_string(hid, tpm_pnp_tbl[TIS_HID_USR_IDX].id,
+ MODULE_PARM_DESC(hid, "Set additional specific HID for this driver to probe");
+ #endif
+
++#ifdef CONFIG_ACPI
++static int tpm_check_resource(struct acpi_resource *ares, void *data)
++{
++ struct tpm_info *tpm_info = (struct tpm_info *) data;
++ struct resource res;
++
++ if (acpi_dev_resource_interrupt(ares, 0, &res)) {
++ tpm_info->irq = res.start;
++ } else if (acpi_dev_resource_memory(ares, &res)) {
++ tpm_info->start = res.start;
++ tpm_info->len = resource_size(&res);
++ }
++
++ return 1;
++}
++
++static int tpm_tis_acpi_init(struct acpi_device *acpi_dev)
++{
++ struct list_head resources;
++ struct tpm_info tpm_info = tis_default_info;
++ int ret;
++
++ if (!is_fifo(acpi_dev))
++ return -ENODEV;
++
++ INIT_LIST_HEAD(&resources);
++ ret = acpi_dev_get_resources(acpi_dev, &resources, tpm_check_resource,
++ &tpm_info);
++ if (ret < 0)
++ return ret;
++
++ acpi_dev_free_resource_list(&resources);
++
++ if (!tpm_info.irq)
++ interrupts = false;
++
++ if (is_itpm(acpi_dev))
++ itpm = true;
++
++ return tpm_tis_init(&acpi_dev->dev, &tpm_info, acpi_dev->handle);
++}
++
++static int tpm_tis_acpi_remove(struct acpi_device *dev)
++{
++ struct tpm_chip *chip = dev_get_drvdata(&dev->dev);
++
++ tpm_chip_unregister(chip);
++ tpm_tis_remove(chip);
++
++ return 0;
++}
++
++static struct acpi_device_id tpm_acpi_tbl[] = {
++ {"MSFT0101", 0}, /* TPM 2.0 */
++ /* Add new here */
++ {"", 0}, /* User Specified */
++ {"", 0} /* Terminator */
++};
++MODULE_DEVICE_TABLE(acpi, tpm_acpi_tbl);
++
++static struct acpi_driver tis_acpi_driver = {
++ .name = "tpm_tis",
++ .ids = tpm_acpi_tbl,
++ .ops = {
++ .add = tpm_tis_acpi_init,
++ .remove = tpm_tis_acpi_remove,
++ },
++ .drv = {
++ .pm = &tpm_tis_pm,
++ },
++};
++#endif
++
+ static struct platform_driver tis_drv = {
+ .driver = {
+ .name = "tpm_tis",
+@@ -966,9 +1079,25 @@ static int __init init_tis(void)
+ {
+ int rc;
+ #ifdef CONFIG_PNP
+- if (!force)
+- return pnp_register_driver(&tis_pnp_driver);
++ if (!force) {
++ rc = pnp_register_driver(&tis_pnp_driver);
++ if (rc)
++ return rc;
++ }
++#endif
++#ifdef CONFIG_ACPI
++ if (!force) {
++ rc = acpi_bus_register_driver(&tis_acpi_driver);
++ if (rc) {
++#ifdef CONFIG_PNP
++ pnp_unregister_driver(&tis_pnp_driver);
+ #endif
++ return rc;
++ }
++ }
++#endif
++ if (!force)
++ return 0;
+
+ rc = platform_driver_register(&tis_drv);
+ if (rc < 0)
+@@ -978,7 +1107,7 @@ static int __init init_tis(void)
+ rc = PTR_ERR(pdev);
+ goto err_dev;
+ }
+- rc = tpm_tis_init(&pdev->dev, NULL, TIS_MEM_BASE, TIS_MEM_LEN, 0);
++ rc = tpm_tis_init(&pdev->dev, &tis_default_info, NULL);
+ if (rc)
+ goto err_init;
+ return 0;
+@@ -992,9 +1121,14 @@ err_dev:
+ static void __exit cleanup_tis(void)
+ {
+ struct tpm_chip *chip;
+-#ifdef CONFIG_PNP
++#if defined(CONFIG_PNP) || defined(CONFIG_ACPI)
+ if (!force) {
++#ifdef CONFIG_ACPI
++ acpi_bus_unregister_driver(&tis_acpi_driver);
++#endif
++#ifdef CONFIG_PNP
+ pnp_unregister_driver(&tis_pnp_driver);
++#endif
+ return;
+ }
+ #endif
+diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+index 932bd1862f7a..6e9036a06515 100644
+--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
++++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+@@ -1014,13 +1014,12 @@ static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter)
+ sizeof(struct atl1c_recv_ret_status) * rx_desc_count +
+ 8 * 4;
+
+- ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
+- &ring_header->dma);
++ ring_header->desc = dma_zalloc_coherent(&pdev->dev, ring_header->size,
++ &ring_header->dma, GFP_KERNEL);
+ if (unlikely(!ring_header->desc)) {
+- dev_err(&pdev->dev, "pci_alloc_consistend failed\n");
++ dev_err(&pdev->dev, "could not get memory for DMA buffer\n");
+ goto err_nomem;
+ }
+- memset(ring_header->desc, 0, ring_header->size);
+ /* init TPD ring */
+
+ tpd_ring[0].dma = roundup(ring_header->dma, 8);
+diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
+index 6af028d5f9bc..97e4df9bf407 100644
+--- a/drivers/net/ethernet/qualcomm/qca_spi.c
++++ b/drivers/net/ethernet/qualcomm/qca_spi.c
+@@ -736,9 +736,8 @@ qcaspi_netdev_tx_timeout(struct net_device *dev)
+ netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n",
+ jiffies, jiffies - dev->trans_start);
+ qca->net_dev->stats.tx_errors++;
+- /* wake the queue if there is room */
+- if (qcaspi_tx_ring_has_space(&qca->txr))
+- netif_wake_queue(dev);
++ /* Trigger tx queue flush and QCA7000 reset */
++ qca->sync = QCASPI_SYNC_UNKNOWN;
+ }
+
+ static int
+diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
+index 7fb244f565b2..13463c4acc86 100644
+--- a/drivers/net/ethernet/renesas/sh_eth.c
++++ b/drivers/net/ethernet/renesas/sh_eth.c
+@@ -1481,6 +1481,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
+ if (mdp->cd->shift_rd0)
+ desc_status >>= 16;
+
++ skb = mdp->rx_skbuff[entry];
+ if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
+ RD_RFS5 | RD_RFS6 | RD_RFS10)) {
+ ndev->stats.rx_errors++;
+@@ -1496,12 +1497,11 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
+ ndev->stats.rx_missed_errors++;
+ if (desc_status & RD_RFS10)
+ ndev->stats.rx_over_errors++;
+- } else {
++ } else if (skb) {
+ if (!mdp->cd->hw_swap)
+ sh_eth_soft_swap(
+ phys_to_virt(ALIGN(rxdesc->addr, 4)),
+ pkt_len + 2);
+- skb = mdp->rx_skbuff[entry];
+ mdp->rx_skbuff[entry] = NULL;
+ if (mdp->cd->rpadir)
+ skb_reserve(skb, NET_IP_ALIGN);
+diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
+index ab33262ed826..9c8fabed4444 100644
+--- a/drivers/net/ppp/pppoe.c
++++ b/drivers/net/ppp/pppoe.c
+@@ -568,6 +568,9 @@ static int pppoe_create(struct net *net, struct socket *sock)
+ sk->sk_family = PF_PPPOX;
+ sk->sk_protocol = PX_PROTO_OE;
+
++ INIT_WORK(&pppox_sk(sk)->proto.pppoe.padt_work,
++ pppoe_unbind_sock_work);
++
+ return 0;
+ }
+
+@@ -632,8 +635,6 @@ static int pppoe_connect(struct socket *sock, struct sockaddr *uservaddr,
+
+ lock_sock(sk);
+
+- INIT_WORK(&po->proto.pppoe.padt_work, pppoe_unbind_sock_work);
+-
+ error = -EINVAL;
+ if (sp->sa_protocol != PX_PROTO_OE)
+ goto end;
+@@ -663,8 +664,13 @@ static int pppoe_connect(struct socket *sock, struct sockaddr *uservaddr,
+ po->pppoe_dev = NULL;
+ }
+
+- memset(sk_pppox(po) + 1, 0,
+- sizeof(struct pppox_sock) - sizeof(struct sock));
++ po->pppoe_ifindex = 0;
++ memset(&po->pppoe_pa, 0, sizeof(po->pppoe_pa));
++ memset(&po->pppoe_relay, 0, sizeof(po->pppoe_relay));
++ memset(&po->chan, 0, sizeof(po->chan));
++ po->next = NULL;
++ po->num = 0;
++
+ sk->sk_state = PPPOX_NONE;
+ }
+
+diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
+index e3bfbd4d0136..0bacabfa486e 100644
+--- a/drivers/net/ppp/pptp.c
++++ b/drivers/net/ppp/pptp.c
+@@ -420,6 +420,9 @@ static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr,
+ struct pptp_opt *opt = &po->proto.pptp;
+ int error = 0;
+
++ if (sockaddr_len < sizeof(struct sockaddr_pppox))
++ return -EINVAL;
++
+ lock_sock(sk);
+
+ opt->src_addr = sp->sa_addr.pptp;
+@@ -441,6 +444,9 @@ static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr,
+ struct flowi4 fl4;
+ int error = 0;
+
++ if (sockaddr_len < sizeof(struct sockaddr_pppox))
++ return -EINVAL;
++
+ if (sp->sa_protocol != PX_PROTO_PPTP)
+ return -EINVAL;
+
+diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
+index aafa1a1898e4..ce6fad1c43e6 100644
+--- a/drivers/net/usb/r8152.c
++++ b/drivers/net/usb/r8152.c
+@@ -3006,17 +3006,6 @@ static int rtl8152_open(struct net_device *netdev)
+
+ mutex_lock(&tp->control);
+
+- /* The WORK_ENABLE may be set when autoresume occurs */
+- if (test_bit(WORK_ENABLE, &tp->flags)) {
+- clear_bit(WORK_ENABLE, &tp->flags);
+- usb_kill_urb(tp->intr_urb);
+- cancel_delayed_work_sync(&tp->schedule);
+-
+- /* disable the tx/rx, if the workqueue has enabled them. */
+- if (netif_carrier_ok(netdev))
+- tp->rtl_ops.disable(tp);
+- }
+-
+ tp->rtl_ops.up(tp);
+
+ rtl8152_set_speed(tp, AUTONEG_ENABLE,
+@@ -3063,12 +3052,6 @@ static int rtl8152_close(struct net_device *netdev)
+ } else {
+ mutex_lock(&tp->control);
+
+- /* The autosuspend may have been enabled and wouldn't
+- * be disable when autoresume occurs, because the
+- * netif_running() would be false.
+- */
+- rtl_runtime_suspend_enable(tp, false);
+-
+ tp->rtl_ops.down(tp);
+
+ mutex_unlock(&tp->control);
+@@ -3369,7 +3352,7 @@ static int rtl8152_resume(struct usb_interface *intf)
+ netif_device_attach(tp->netdev);
+ }
+
+- if (netif_running(tp->netdev)) {
++ if (netif_running(tp->netdev) && tp->netdev->flags & IFF_UP) {
+ if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
+ rtl_runtime_suspend_enable(tp, false);
+ clear_bit(SELECTIVE_SUSPEND, &tp->flags);
+@@ -3387,6 +3370,8 @@ static int rtl8152_resume(struct usb_interface *intf)
+ }
+ usb_submit_urb(tp->intr_urb, GFP_KERNEL);
+ } else if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
++ if (tp->netdev->flags & IFF_UP)
++ rtl_runtime_suspend_enable(tp, false);
+ clear_bit(SELECTIVE_SUSPEND, &tp->flags);
+ }
+
+diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
+index 93e54a0f471a..35882dd690a6 100644
+--- a/drivers/platform/x86/toshiba_acpi.c
++++ b/drivers/platform/x86/toshiba_acpi.c
+@@ -2764,6 +2764,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
+ ret = toshiba_function_keys_get(dev, &special_functions);
+ dev->kbd_function_keys_supported = !ret;
+
++ dev->hotkey_event_type = 0;
+ if (toshiba_acpi_setup_keyboard(dev))
+ pr_info("Unable to activate hotkeys\n");
+
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index a086e1d69bc7..0fe15aec7ed0 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1848,6 +1848,11 @@ static const struct usb_device_id acm_ids[] = {
+ },
+ #endif
+
++ /* Exclude Infineon Flash Loader utility */
++ { USB_DEVICE(0x058b, 0x0041),
++ .driver_info = IGNORE_DEVICE,
++ },
++
+ /* control interfaces without any protocol set */
+ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+ USB_CDC_PROTO_NONE) },
+diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
+index b9ddf0c1ffe5..894894f2ff93 100644
+--- a/drivers/usb/core/config.c
++++ b/drivers/usb/core/config.c
+@@ -115,7 +115,8 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
+ USB_SS_MULT(desc->bmAttributes) > 3) {
+ dev_warn(ddev, "Isoc endpoint has Mult of %d in "
+ "config %d interface %d altsetting %d ep %d: "
+- "setting to 3\n", desc->bmAttributes + 1,
++ "setting to 3\n",
++ USB_SS_MULT(desc->bmAttributes),
+ cfgno, inum, asnum, ep->desc.bEndpointAddress);
+ ep->ss_ep_comp.bmAttributes = 2;
+ }
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index 1e9a8c9aa531..d68c4a4db682 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -124,6 +124,10 @@ struct usb_hub *usb_hub_to_struct_hub(struct usb_device *hdev)
+
+ int usb_device_supports_lpm(struct usb_device *udev)
+ {
++ /* Some devices have trouble with LPM */
++ if (udev->quirks & USB_QUIRK_NO_LPM)
++ return 0;
++
+ /* USB 2.1 (and greater) devices indicate LPM support through
+ * their USB 2.0 Extended Capabilities BOS descriptor.
+ */
+@@ -4493,6 +4497,8 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
+ goto fail;
+ }
+
++ usb_detect_quirks(udev);
++
+ if (udev->wusb == 0 && le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0201) {
+ retval = usb_get_bos_descriptor(udev);
+ if (!retval) {
+@@ -4691,7 +4697,6 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
+ if (status < 0)
+ goto loop;
+
+- usb_detect_quirks(udev);
+ if (udev->quirks & USB_QUIRK_DELAY_INIT)
+ msleep(1000);
+
+@@ -5307,9 +5312,6 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
+ if (udev->usb2_hw_lpm_enabled == 1)
+ usb_set_usb2_hardware_lpm(udev, 0);
+
+- bos = udev->bos;
+- udev->bos = NULL;
+-
+ /* Disable LPM and LTM while we reset the device and reinstall the alt
+ * settings. Device-initiated LPM settings, and system exit latency
+ * settings are cleared when the device is reset, so we have to set
+@@ -5318,15 +5320,18 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
+ ret = usb_unlocked_disable_lpm(udev);
+ if (ret) {
+ dev_err(&udev->dev, "%s Failed to disable LPM\n.", __func__);
+- goto re_enumerate;
++ goto re_enumerate_no_bos;
+ }
+ ret = usb_disable_ltm(udev);
+ if (ret) {
+ dev_err(&udev->dev, "%s Failed to disable LTM\n.",
+ __func__);
+- goto re_enumerate;
++ goto re_enumerate_no_bos;
+ }
+
++ bos = udev->bos;
++ udev->bos = NULL;
++
+ for (i = 0; i < SET_CONFIG_TRIES; ++i) {
+
+ /* ep0 maxpacket size may change; let the HCD know about it.
+@@ -5423,10 +5428,11 @@ done:
+ return 0;
+
+ re_enumerate:
+- /* LPM state doesn't matter when we're about to destroy the device. */
+- hub_port_logical_disconnect(parent_hub, port1);
+ usb_release_bos_descriptor(udev);
+ udev->bos = bos;
++re_enumerate_no_bos:
++ /* LPM state doesn't matter when we're about to destroy the device. */
++ hub_port_logical_disconnect(parent_hub, port1);
+ return -ENODEV;
+ }
+
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index f5a381945db2..017c1de53aa5 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -199,6 +199,12 @@ static const struct usb_device_id usb_quirk_list[] = {
+ { USB_DEVICE(0x1a0a, 0x0200), .driver_info =
+ USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
+
++ /* Blackmagic Design Intensity Shuttle */
++ { USB_DEVICE(0x1edb, 0xbd3b), .driver_info = USB_QUIRK_NO_LPM },
++
++ /* Blackmagic Design UltraStudio SDI */
++ { USB_DEVICE(0x1edb, 0xbd4f), .driver_info = USB_QUIRK_NO_LPM },
++
+ { } /* terminating entry must be last */
+ };
+
+diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
+index b51226abade6..7a454708e948 100644
+--- a/drivers/usb/gadget/udc/pxa27x_udc.c
++++ b/drivers/usb/gadget/udc/pxa27x_udc.c
+@@ -2535,6 +2535,9 @@ static int pxa_udc_suspend(struct platform_device *_dev, pm_message_t state)
+ udc->pullup_resume = udc->pullup_on;
+ dplus_pullup(udc, 0);
+
++ if (udc->driver)
++ udc->driver->disconnect(&udc->gadget);
++
+ return 0;
+ }
+
+diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c
+index dc31c425ce01..9f1c0538b211 100644
+--- a/drivers/usb/host/whci/qset.c
++++ b/drivers/usb/host/whci/qset.c
+@@ -377,6 +377,10 @@ static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_f
+ if (std->pl_virt == NULL)
+ return -ENOMEM;
+ std->dma_addr = dma_map_single(whc->wusbhc.dev, std->pl_virt, pl_len, DMA_TO_DEVICE);
++ if (dma_mapping_error(whc->wusbhc.dev, std->dma_addr)) {
++ kfree(std->pl_virt);
++ return -EFAULT;
++ }
+
+ for (p = 0; p < std->num_pointers; p++) {
+ std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr);
+diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
+index 39db8b603627..d1b9e0c7fb0d 100644
+--- a/drivers/usb/musb/Kconfig
++++ b/drivers/usb/musb/Kconfig
+@@ -147,7 +147,7 @@ config USB_TI_CPPI_DMA
+
+ config USB_TI_CPPI41_DMA
+ bool 'TI CPPI 4.1 (AM335x)'
+- depends on ARCH_OMAP
++ depends on ARCH_OMAP && DMADEVICES
+ select TI_CPPI41
+
+ config USB_TUSB_OMAP_DMA
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index eac7ccaa3c85..7d4f51a32e66 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -132,7 +132,6 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */
+- { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */
+ { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */
+ { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */
+diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
+index 3658662898fc..a204782ae530 100644
+--- a/drivers/usb/serial/usb-serial-simple.c
++++ b/drivers/usb/serial/usb-serial-simple.c
+@@ -53,6 +53,7 @@ DEVICE(funsoft, FUNSOFT_IDS);
+
+ /* Infineon Flashloader driver */
+ #define FLASHLOADER_IDS() \
++ { USB_DEVICE_INTERFACE_CLASS(0x058b, 0x0041, USB_CLASS_CDC_DATA) }, \
+ { USB_DEVICE(0x8087, 0x0716) }
+ DEVICE(flashloader, FLASHLOADER_IDS);
+
+diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
+index 6d3122afeed3..75e4979e6c15 100644
+--- a/drivers/usb/storage/uas.c
++++ b/drivers/usb/storage/uas.c
+@@ -796,6 +796,10 @@ static int uas_slave_configure(struct scsi_device *sdev)
+ if (devinfo->flags & US_FL_NO_REPORT_OPCODES)
+ sdev->no_report_opcodes = 1;
+
++ /* A few buggy USB-ATA bridges don't understand FUA */
++ if (devinfo->flags & US_FL_BROKEN_FUA)
++ sdev->broken_fua = 1;
++
+ scsi_change_queue_depth(sdev, devinfo->qdepth - 2);
+ return 0;
+ }
+diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
+index 87898ca2ed17..4095824c8c6d 100644
+--- a/drivers/usb/storage/unusual_devs.h
++++ b/drivers/usb/storage/unusual_devs.h
+@@ -1987,7 +1987,7 @@ UNUSUAL_DEV( 0x14cd, 0x6600, 0x0201, 0x0201,
+ US_FL_IGNORE_RESIDUE ),
+
+ /* Reported by Michael Büsch <m@bues.ch> */
+-UNUSUAL_DEV( 0x152d, 0x0567, 0x0114, 0x0114,
++UNUSUAL_DEV( 0x152d, 0x0567, 0x0114, 0x0116,
+ "JMicron",
+ "USB to ATA/ATAPI Bridge",
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
+index c85ea530085f..ccc113e83d88 100644
+--- a/drivers/usb/storage/unusual_uas.h
++++ b/drivers/usb/storage/unusual_uas.h
+@@ -132,7 +132,7 @@ UNUSUAL_DEV(0x152d, 0x0567, 0x0000, 0x9999,
+ "JMicron",
+ "JMS567",
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+- US_FL_NO_REPORT_OPCODES),
++ US_FL_BROKEN_FUA | US_FL_NO_REPORT_OPCODES),
+
+ /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
+ UNUSUAL_DEV(0x2109, 0x0711, 0x0000, 0x9999,
+diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h
+index 9948c874e3f1..1d0043dc34e4 100644
+--- a/include/linux/usb/quirks.h
++++ b/include/linux/usb/quirks.h
+@@ -47,4 +47,7 @@
+ /* device generates spurious wakeup, ignore remote wakeup capability */
+ #define USB_QUIRK_IGNORE_REMOTE_WAKEUP BIT(9)
+
++/* device can't handle Link Power Management */
++#define USB_QUIRK_NO_LPM BIT(10)
++
+ #endif /* __LINUX_USB_QUIRKS_H */
+diff --git a/include/net/dst.h b/include/net/dst.h
+index 0fb99a26e973..182b812d45e1 100644
+--- a/include/net/dst.h
++++ b/include/net/dst.h
+@@ -312,6 +312,39 @@ static inline void skb_dst_force(struct sk_buff *skb)
+ }
+ }
+
++/**
++ * dst_hold_safe - Take a reference on a dst if possible
++ * @dst: pointer to dst entry
++ *
++ * This helper returns false if it could not safely
++ * take a reference on a dst.
++ */
++static inline bool dst_hold_safe(struct dst_entry *dst)
++{
++ if (dst->flags & DST_NOCACHE)
++ return atomic_inc_not_zero(&dst->__refcnt);
++ dst_hold(dst);
++ return true;
++}
++
++/**
++ * skb_dst_force_safe - makes sure skb dst is refcounted
++ * @skb: buffer
++ *
++ * If dst is not yet refcounted and not destroyed, grab a ref on it.
++ */
++static inline void skb_dst_force_safe(struct sk_buff *skb)
++{
++ if (skb_dst_is_noref(skb)) {
++ struct dst_entry *dst = skb_dst(skb);
++
++ if (!dst_hold_safe(dst))
++ dst = NULL;
++
++ skb->_skb_refdst = (unsigned long)dst;
++ }
++}
++
+
+ /**
+ * __skb_tunnel_rx - prepare skb for rx reinsert
+diff --git a/include/net/sock.h b/include/net/sock.h
+index ed01a012f8d5..4c4b21c00828 100644
+--- a/include/net/sock.h
++++ b/include/net/sock.h
+@@ -386,6 +386,7 @@ struct sock {
+ sk_no_check_rx : 1,
+ sk_userlocks : 4,
+ sk_protocol : 8,
++#define SK_PROTOCOL_MAX U8_MAX
+ sk_type : 16;
+ kmemcheck_bitfield_end(flags);
+ int sk_wmem_queued;
+@@ -722,6 +723,8 @@ enum sock_flags {
+ SOCK_SELECT_ERR_QUEUE, /* Wake select on error queue */
+ };
+
++#define SK_FLAGS_TIMESTAMP ((1UL << SOCK_TIMESTAMP) | (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE))
++
+ static inline void sock_copy_flags(struct sock *nsk, struct sock *osk)
+ {
+ nsk->sk_flags = osk->sk_flags;
+@@ -796,7 +799,7 @@ void sk_stream_write_space(struct sock *sk);
+ static inline void __sk_add_backlog(struct sock *sk, struct sk_buff *skb)
+ {
+ /* dont let skb dst not refcounted, we are going to leave rcu lock */
+- skb_dst_force(skb);
++ skb_dst_force_safe(skb);
+
+ if (!sk->sk_backlog.tail)
+ sk->sk_backlog.head = skb;
+diff --git a/include/net/vxlan.h b/include/net/vxlan.h
+index 0082b5d33d7d..7ef9272a405a 100644
+--- a/include/net/vxlan.h
++++ b/include/net/vxlan.h
+@@ -78,7 +78,7 @@ struct vxlanhdr {
+ };
+
+ /* VXLAN header flags. */
+-#define VXLAN_HF_RCO BIT(24)
++#define VXLAN_HF_RCO BIT(21)
+ #define VXLAN_HF_VNI BIT(27)
+ #define VXLAN_HF_GBP BIT(31)
+
+diff --git a/lib/rhashtable.c b/lib/rhashtable.c
+index cf910e48f8f2..5b17447efa8b 100644
+--- a/lib/rhashtable.c
++++ b/lib/rhashtable.c
+@@ -506,10 +506,11 @@ int rhashtable_walk_init(struct rhashtable *ht, struct rhashtable_iter *iter)
+ if (!iter->walker)
+ return -ENOMEM;
+
+- mutex_lock(&ht->mutex);
+- iter->walker->tbl = rht_dereference(ht->tbl, ht);
++ spin_lock(&ht->lock);
++ iter->walker->tbl =
++ rcu_dereference_protected(ht->tbl, lockdep_is_held(&ht->lock));
+ list_add(&iter->walker->list, &iter->walker->tbl->walkers);
+- mutex_unlock(&ht->mutex);
++ spin_unlock(&ht->lock);
+
+ return 0;
+ }
+@@ -523,10 +524,10 @@ EXPORT_SYMBOL_GPL(rhashtable_walk_init);
+ */
+ void rhashtable_walk_exit(struct rhashtable_iter *iter)
+ {
+- mutex_lock(&iter->ht->mutex);
++ spin_lock(&iter->ht->lock);
+ if (iter->walker->tbl)
+ list_del(&iter->walker->list);
+- mutex_unlock(&iter->ht->mutex);
++ spin_unlock(&iter->ht->lock);
+ kfree(iter->walker);
+ }
+ EXPORT_SYMBOL_GPL(rhashtable_walk_exit);
+@@ -550,14 +551,12 @@ int rhashtable_walk_start(struct rhashtable_iter *iter)
+ {
+ struct rhashtable *ht = iter->ht;
+
+- mutex_lock(&ht->mutex);
++ rcu_read_lock();
+
++ spin_lock(&ht->lock);
+ if (iter->walker->tbl)
+ list_del(&iter->walker->list);
+-
+- rcu_read_lock();
+-
+- mutex_unlock(&ht->mutex);
++ spin_unlock(&ht->lock);
+
+ if (!iter->walker->tbl) {
+ iter->walker->tbl = rht_dereference_rcu(ht->tbl, ht);
+@@ -730,9 +729,6 @@ int rhashtable_init(struct rhashtable *ht,
+ if (params->nulls_base && params->nulls_base < (1U << RHT_BASE_SHIFT))
+ return -EINVAL;
+
+- if (params->nelem_hint)
+- size = rounded_hashtable_size(params);
+-
+ memset(ht, 0, sizeof(*ht));
+ mutex_init(&ht->mutex);
+ spin_lock_init(&ht->lock);
+@@ -752,6 +748,9 @@ int rhashtable_init(struct rhashtable *ht,
+
+ ht->p.min_size = max(ht->p.min_size, HASH_MIN_SIZE);
+
++ if (params->nelem_hint)
++ size = rounded_hashtable_size(&ht->p);
++
+ /* The maximum (not average) chain length grows with the
+ * size of the hash table, at a rate of (log N)/(log log N).
+ * The value of 16 is selected so that even if the hash
+diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
+index 330c1f4a5a0b..a64884bbf0ce 100644
+--- a/net/ax25/af_ax25.c
++++ b/net/ax25/af_ax25.c
+@@ -806,6 +806,9 @@ static int ax25_create(struct net *net, struct socket *sock, int protocol,
+ struct sock *sk;
+ ax25_cb *ax25;
+
++ if (protocol < 0 || protocol > SK_PROTOCOL_MAX)
++ return -EINVAL;
++
+ if (!net_eq(net, &init_net))
+ return -EAFNOSUPPORT;
+
+diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
+index 4322c833e748..8611bc7bdd32 100644
+--- a/net/bluetooth/sco.c
++++ b/net/bluetooth/sco.c
+@@ -520,6 +520,9 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
+ if (!addr || addr->sa_family != AF_BLUETOOTH)
+ return -EINVAL;
+
++ if (addr_len < sizeof(struct sockaddr_sco))
++ return -EINVAL;
++
+ lock_sock(sk);
+
+ if (sk->sk_state != BT_OPEN) {
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 075d2e78c87e..2e5fcda16570 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -3661,7 +3661,8 @@ static void __skb_complete_tx_timestamp(struct sk_buff *skb,
+ serr->ee.ee_info = tstype;
+ if (sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID) {
+ serr->ee.ee_data = skb_shinfo(skb)->tskey;
+- if (sk->sk_protocol == IPPROTO_TCP)
++ if (sk->sk_protocol == IPPROTO_TCP &&
++ sk->sk_type == SOCK_STREAM)
+ serr->ee.ee_data -= sk->sk_tskey;
+ }
+
+@@ -4200,7 +4201,8 @@ static struct sk_buff *skb_reorder_vlan_header(struct sk_buff *skb)
+ return NULL;
+ }
+
+- memmove(skb->data - ETH_HLEN, skb->data - VLAN_ETH_HLEN, 2 * ETH_ALEN);
++ memmove(skb->data - ETH_HLEN, skb->data - skb->mac_len - VLAN_HLEN,
++ 2 * ETH_ALEN);
+ skb->mac_header += VLAN_HLEN;
+ return skb;
+ }
+diff --git a/net/core/sock.c b/net/core/sock.c
+index dc30dc5bb1b8..47fc8bb3b946 100644
+--- a/net/core/sock.c
++++ b/net/core/sock.c
+@@ -421,8 +421,6 @@ static void sock_warn_obsolete_bsdism(const char *name)
+ }
+ }
+
+-#define SK_FLAGS_TIMESTAMP ((1UL << SOCK_TIMESTAMP) | (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE))
+-
+ static void sock_disable_timestamp(struct sock *sk, unsigned long flags)
+ {
+ if (sk->sk_flags & flags) {
+@@ -861,7 +859,8 @@ set_rcvbuf:
+
+ if (val & SOF_TIMESTAMPING_OPT_ID &&
+ !(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID)) {
+- if (sk->sk_protocol == IPPROTO_TCP) {
++ if (sk->sk_protocol == IPPROTO_TCP &&
++ sk->sk_type == SOCK_STREAM) {
+ if (sk->sk_state != TCP_ESTABLISHED) {
+ ret = -EINVAL;
+ break;
+diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
+index 754484b3cd0e..2783c538ec19 100644
+--- a/net/decnet/af_decnet.c
++++ b/net/decnet/af_decnet.c
+@@ -678,6 +678,9 @@ static int dn_create(struct net *net, struct socket *sock, int protocol,
+ {
+ struct sock *sk;
+
++ if (protocol < 0 || protocol > SK_PROTOCOL_MAX)
++ return -EINVAL;
++
+ if (!net_eq(net, &init_net))
+ return -EAFNOSUPPORT;
+
+diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
+index a5aa54ea6533..0cc98b135b8f 100644
+--- a/net/ipv4/af_inet.c
++++ b/net/ipv4/af_inet.c
+@@ -259,6 +259,9 @@ static int inet_create(struct net *net, struct socket *sock, int protocol,
+ int try_loading_module = 0;
+ int err;
+
++ if (protocol < 0 || protocol >= IPPROTO_MAX)
++ return -EINVAL;
++
+ sock->state = SS_UNCONNECTED;
+
+ /* Look for the requested type/protocol pair. */
+diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
+index 34968cd5c146..4b67937692c9 100644
+--- a/net/ipv4/fou.c
++++ b/net/ipv4/fou.c
+@@ -24,6 +24,7 @@ struct fou {
+ u16 type;
+ struct udp_offload udp_offloads;
+ struct list_head list;
++ struct rcu_head rcu;
+ };
+
+ #define FOU_F_REMCSUM_NOPARTIAL BIT(0)
+@@ -421,7 +422,7 @@ static void fou_release(struct fou *fou)
+ list_del(&fou->list);
+ udp_tunnel_sock_release(sock);
+
+- kfree(fou);
++ kfree_rcu(fou, rcu);
+ }
+
+ static int fou_encap_init(struct sock *sk, struct fou *fou, struct fou_cfg *cfg)
+diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
+index 88203e755af8..cd18c3d3251e 100644
+--- a/net/ipv4/tcp_ipv4.c
++++ b/net/ipv4/tcp_ipv4.c
+@@ -1509,7 +1509,7 @@ bool tcp_prequeue(struct sock *sk, struct sk_buff *skb)
+ if (likely(sk->sk_rx_dst))
+ skb_dst_drop(skb);
+ else
+- skb_dst_force(skb);
++ skb_dst_force_safe(skb);
+
+ __skb_queue_tail(&tp->ucopy.prequeue, skb);
+ tp->ucopy.memory += skb->truesize;
+@@ -1714,8 +1714,7 @@ void inet_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)
+ {
+ struct dst_entry *dst = skb_dst(skb);
+
+- if (dst) {
+- dst_hold(dst);
++ if (dst && dst_hold_safe(dst)) {
+ sk->sk_rx_dst = dst;
+ inet_sk(sk)->rx_dst_ifindex = skb->skb_iif;
+ }
+diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
+index 986440b24978..1ea4322c3b0c 100644
+--- a/net/ipv4/tcp_output.c
++++ b/net/ipv4/tcp_output.c
+@@ -3143,7 +3143,7 @@ static int tcp_send_syn_data(struct sock *sk, struct sk_buff *syn)
+ {
+ struct tcp_sock *tp = tcp_sk(sk);
+ struct tcp_fastopen_request *fo = tp->fastopen_req;
+- int syn_loss = 0, space, err = 0, copied;
++ int syn_loss = 0, space, err = 0;
+ unsigned long last_syn_loss = 0;
+ struct sk_buff *syn_data;
+
+@@ -3181,17 +3181,18 @@ static int tcp_send_syn_data(struct sock *sk, struct sk_buff *syn)
+ goto fallback;
+ syn_data->ip_summed = CHECKSUM_PARTIAL;
+ memcpy(syn_data->cb, syn->cb, sizeof(syn->cb));
+- copied = copy_from_iter(skb_put(syn_data, space), space,
+- &fo->data->msg_iter);
+- if (unlikely(!copied)) {
+- kfree_skb(syn_data);
+- goto fallback;
+- }
+- if (copied != space) {
+- skb_trim(syn_data, copied);
+- space = copied;
++ if (space) {
++ int copied = copy_from_iter(skb_put(syn_data, space), space,
++ &fo->data->msg_iter);
++ if (unlikely(!copied)) {
++ kfree_skb(syn_data);
++ goto fallback;
++ }
++ if (copied != space) {
++ skb_trim(syn_data, copied);
++ space = copied;
++ }
+ }
+-
+ /* No more data pending in inet_wait_for_connect() */
+ if (space == fo->size)
+ fo->data = NULL;
+diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
+index fd3aa6148dd1..a2d685030a34 100644
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -343,6 +343,12 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
+ setup_timer(&ndev->rs_timer, addrconf_rs_timer,
+ (unsigned long)ndev);
+ memcpy(&ndev->cnf, dev_net(dev)->ipv6.devconf_dflt, sizeof(ndev->cnf));
++
++ if (ndev->cnf.stable_secret.initialized)
++ ndev->addr_gen_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
++ else
++ ndev->addr_gen_mode = IN6_ADDR_GEN_MODE_EUI64;
++
+ ndev->cnf.mtu6 = dev->mtu;
+ ndev->cnf.sysctl = NULL;
+ ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl);
+@@ -2384,7 +2390,7 @@ ok:
+ #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
+ if (in6_dev->cnf.optimistic_dad &&
+ !net->ipv6.devconf_all->forwarding && sllao)
+- addr_flags = IFA_F_OPTIMISTIC;
++ addr_flags |= IFA_F_OPTIMISTIC;
+ #endif
+
+ /* Do not allow to create too much of autoconfigured
+diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
+index 2d044d2a2ccf..bad62fa5e70f 100644
+--- a/net/ipv6/af_inet6.c
++++ b/net/ipv6/af_inet6.c
+@@ -109,6 +109,9 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol,
+ int try_loading_module = 0;
+ int err;
+
++ if (protocol < 0 || protocol >= IPPROTO_MAX)
++ return -EINVAL;
++
+ /* Look for the requested type/protocol pair. */
+ lookup_protocol:
+ err = -ESOCKTNOSUPPORT;
+diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
+index 69f4f689f06a..76be7d311cc4 100644
+--- a/net/ipv6/ip6_gre.c
++++ b/net/ipv6/ip6_gre.c
+@@ -1553,13 +1553,11 @@ static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[],
+ return -EEXIST;
+ } else {
+ t = nt;
+-
+- ip6gre_tunnel_unlink(ign, t);
+- ip6gre_tnl_change(t, &p, !tb[IFLA_MTU]);
+- ip6gre_tunnel_link(ign, t);
+- netdev_state_change(dev);
+ }
+
++ ip6gre_tunnel_unlink(ign, t);
++ ip6gre_tnl_change(t, &p, !tb[IFLA_MTU]);
++ ip6gre_tunnel_link(ign, t);
+ return 0;
+ }
+
+diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
+index cfb27f56c62f..c1938ad39f8c 100644
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -93,10 +93,9 @@ static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)
+ {
+ struct dst_entry *dst = skb_dst(skb);
+
+- if (dst) {
++ if (dst && dst_hold_safe(dst)) {
+ const struct rt6_info *rt = (const struct rt6_info *)dst;
+
+- dst_hold(dst);
+ sk->sk_rx_dst = dst;
+ inet_sk(sk)->rx_dst_ifindex = skb->skb_iif;
+ if (rt->rt6i_node)
+diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
+index ee0ea25c8e7a..9a1edcde4ba5 100644
+--- a/net/irda/af_irda.c
++++ b/net/irda/af_irda.c
+@@ -1086,6 +1086,9 @@ static int irda_create(struct net *net, struct socket *sock, int protocol,
+ struct sock *sk;
+ struct irda_sock *self;
+
++ if (protocol < 0 || protocol > SK_PROTOCOL_MAX)
++ return -EINVAL;
++
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
+diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
+index d4b6f3682c14..68c599a5e1d1 100644
+--- a/net/sched/sch_api.c
++++ b/net/sched/sch_api.c
+@@ -950,7 +950,7 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
+ }
+ lockdep_set_class(qdisc_lock(sch), &qdisc_tx_lock);
+ if (!netif_is_multiqueue(dev))
+- sch->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
++ sch->flags |= TCQ_F_ONETXQUEUE;
+ }
+
+ sch->handle = handle;
+diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
+index 0e4198ee2370..3267a5cbb3e8 100644
+--- a/net/sctp/ipv6.c
++++ b/net/sctp/ipv6.c
+@@ -634,6 +634,7 @@ static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
+ struct sock *newsk;
+ struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
+ struct sctp6_sock *newsctp6sk;
++ struct ipv6_txoptions *opt;
+
+ newsk = sk_alloc(sock_net(sk), PF_INET6, GFP_KERNEL, sk->sk_prot);
+ if (!newsk)
+@@ -653,6 +654,13 @@ static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
+
+ memcpy(newnp, np, sizeof(struct ipv6_pinfo));
+
++ rcu_read_lock();
++ opt = rcu_dereference(np->opt);
++ if (opt)
++ opt = ipv6_dup_options(newsk, opt);
++ RCU_INIT_POINTER(newnp->opt, opt);
++ rcu_read_unlock();
++
+ /* Initialize sk's sport, dport, rcv_saddr and daddr for getsockname()
+ * and getpeername().
+ */
+diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
+index 06320c8c1c86..83a07d468644 100644
+--- a/net/sctp/sm_make_chunk.c
++++ b/net/sctp/sm_make_chunk.c
+@@ -1652,7 +1652,7 @@ static sctp_cookie_param_t *sctp_pack_cookie(const struct sctp_endpoint *ep,
+
+ /* Set an expiration time for the cookie. */
+ cookie->c.expiration = ktime_add(asoc->cookie_life,
+- ktime_get());
++ ktime_get_real());
+
+ /* Copy the peer's init packet. */
+ memcpy(&cookie->c.peer_init[0], init_chunk->chunk_hdr,
+@@ -1780,7 +1780,7 @@ no_hmac:
+ if (sock_flag(ep->base.sk, SOCK_TIMESTAMP))
+ kt = skb_get_ktime(skb);
+ else
+- kt = ktime_get();
++ kt = ktime_get_real();
+
+ if (!asoc && ktime_before(bear_cookie->expiration, kt)) {
+ /*
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index 66d796075050..a63c2c87a0c6 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -7175,6 +7175,7 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
+ newsk->sk_type = sk->sk_type;
+ newsk->sk_bound_dev_if = sk->sk_bound_dev_if;
+ newsk->sk_flags = sk->sk_flags;
++ newsk->sk_tsflags = sk->sk_tsflags;
+ newsk->sk_no_check_tx = sk->sk_no_check_tx;
+ newsk->sk_no_check_rx = sk->sk_no_check_rx;
+ newsk->sk_reuse = sk->sk_reuse;
+@@ -7207,6 +7208,9 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
+ newinet->mc_ttl = 1;
+ newinet->mc_index = 0;
+ newinet->mc_list = NULL;
++
++ if (newsk->sk_flags & SK_FLAGS_TIMESTAMP)
++ net_enable_timestamp();
+ }
+
+ static inline void sctp_copy_descendant(struct sock *sk_to,
+diff --git a/net/socket.c b/net/socket.c
+index 884e32997698..dcbfa868e398 100644
+--- a/net/socket.c
++++ b/net/socket.c
+@@ -1705,6 +1705,7 @@ SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
+ msg.msg_name = addr ? (struct sockaddr *)&address : NULL;
+ /* We assume all kernel code knows the size of sockaddr_storage */
+ msg.msg_namelen = 0;
++ msg.msg_iocb = NULL;
+ if (sock->file->f_flags & O_NONBLOCK)
+ flags |= MSG_DONTWAIT;
+ err = sock_recvmsg(sock, &msg, iov_iter_count(&msg.msg_iter), flags);
+diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
+index 1975fd8d1c10..a398f624c28d 100644
+--- a/net/unix/af_unix.c
++++ b/net/unix/af_unix.c
+@@ -2072,14 +2072,7 @@ static int unix_stream_recvmsg(struct socket *sock, struct msghdr *msg,
+
+ memset(&scm, 0, sizeof(scm));
+
+- err = mutex_lock_interruptible(&u->readlock);
+- if (unlikely(err)) {
+- /* recvmsg() in non blocking mode is supposed to return -EAGAIN
+- * sk_rcvtimeo is not honored by mutex_lock_interruptible()
+- */
+- err = noblock ? -EAGAIN : -ERESTARTSYS;
+- goto out;
+- }
++ mutex_lock(&u->readlock);
+
+ if (flags & MSG_PEEK)
+ skip = sk_peek_offset(sk, flags);
+@@ -2120,12 +2113,12 @@ again:
+
+ timeo = unix_stream_data_wait(sk, timeo, last);
+
+- if (signal_pending(current)
+- || mutex_lock_interruptible(&u->readlock)) {
++ if (signal_pending(current)) {
+ err = sock_intr_errno(timeo);
+ goto out;
+ }
+
++ mutex_lock(&u->readlock);
+ continue;
+ unlock:
+ unix_state_unlock(sk);
+diff --git a/security/keys/gc.c b/security/keys/gc.c
+index c7952375ac53..addf060399e0 100644
+--- a/security/keys/gc.c
++++ b/security/keys/gc.c
+@@ -134,6 +134,12 @@ static noinline void key_gc_unused_keys(struct list_head *keys)
+ kdebug("- %u", key->serial);
+ key_check(key);
+
++ /* Throw away the key data if the key is instantiated */
++ if (test_bit(KEY_FLAG_INSTANTIATED, &key->flags) &&
++ !test_bit(KEY_FLAG_NEGATIVE, &key->flags) &&
++ key->type->destroy)
++ key->type->destroy(key);
++
+ security_key_free(key);
+
+ /* deal with the user's key tracking and quota */
+@@ -148,10 +154,6 @@ static noinline void key_gc_unused_keys(struct list_head *keys)
+ if (test_bit(KEY_FLAG_INSTANTIATED, &key->flags))
+ atomic_dec(&key->user->nikeys);
+
+- /* now throw away the key memory */
+- if (key->type->destroy)
+- key->type->destroy(key);
+-
+ key_user_put(key->user);
+
+ kfree(key->description);
+diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
+index 0b9ec78a7a7a..26f0e0a11ed6 100644
+--- a/security/keys/keyctl.c
++++ b/security/keys/keyctl.c
+@@ -757,16 +757,16 @@ long keyctl_read_key(key_serial_t keyid, char __user *buffer, size_t buflen)
+
+ /* the key is probably readable - now try to read it */
+ can_read_key:
+- ret = key_validate(key);
+- if (ret == 0) {
+- ret = -EOPNOTSUPP;
+- if (key->type->read) {
+- /* read the data with the semaphore held (since we
+- * might sleep) */
+- down_read(&key->sem);
++ ret = -EOPNOTSUPP;
++ if (key->type->read) {
++ /* Read the data with the semaphore held (since we might sleep)
++ * to protect against the key being updated or revoked.
++ */
++ down_read(&key->sem);
++ ret = key_validate(key);
++ if (ret == 0)
+ ret = key->type->read(key, buffer, buflen);
+- up_read(&key->sem);
+- }
++ up_read(&key->sem);
+ }
+
+ error2:
+diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
+index bd536cb221e2..db91639c81e3 100644
+--- a/security/keys/process_keys.c
++++ b/security/keys/process_keys.c
+@@ -794,6 +794,7 @@ long join_session_keyring(const char *name)
+ ret = PTR_ERR(keyring);
+ goto error2;
+ } else if (keyring == new->session_keyring) {
++ key_put(keyring);
+ ret = 0;
+ goto error2;
+ }
diff --git a/1520_keyring-refleak-in-join-session-CVE-2016-0728.patch b/1520_keyring-refleak-in-join-session-CVE-2016-0728.patch
deleted file mode 100644
index 49020d7..0000000
--- a/1520_keyring-refleak-in-join-session-CVE-2016-0728.patch
+++ /dev/null
@@ -1,81 +0,0 @@
-From 23567fd052a9abb6d67fe8e7a9ccdd9800a540f2 Mon Sep 17 00:00:00 2001
-From: Yevgeny Pats <yevgeny@perception-point.io>
-Date: Tue, 19 Jan 2016 22:09:04 +0000
-Subject: KEYS: Fix keyring ref leak in join_session_keyring()
-
-This fixes CVE-2016-0728.
-
-If a thread is asked to join as a session keyring the keyring that's already
-set as its session, we leak a keyring reference.
-
-This can be tested with the following program:
-
- #include <stddef.h>
- #include <stdio.h>
- #include <sys/types.h>
- #include <keyutils.h>
-
- int main(int argc, const char *argv[])
- {
- int i = 0;
- key_serial_t serial;
-
- serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING,
- "leaked-keyring");
- if (serial < 0) {
- perror("keyctl");
- return -1;
- }
-
- if (keyctl(KEYCTL_SETPERM, serial,
- KEY_POS_ALL | KEY_USR_ALL) < 0) {
- perror("keyctl");
- return -1;
- }
-
- for (i = 0; i < 100; i++) {
- serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING,
- "leaked-keyring");
- if (serial < 0) {
- perror("keyctl");
- return -1;
- }
- }
-
- return 0;
- }
-
-If, after the program has run, there something like the following line in
-/proc/keys:
-
-3f3d898f I--Q--- 100 perm 3f3f0000 0 0 keyring leaked-keyring: empty
-
-with a usage count of 100 * the number of times the program has been run,
-then the kernel is malfunctioning. If leaked-keyring has zero usages or
-has been garbage collected, then the problem is fixed.
-
-Reported-by: Yevgeny Pats <yevgeny@perception-point.io>
-Signed-off-by: David Howells <dhowells@redhat.com>
-Acked-by: Don Zickus <dzickus@redhat.com>
-Acked-by: Prarit Bhargava <prarit@redhat.com>
-Acked-by: Jarod Wilson <jarod@redhat.com>
-Signed-off-by: James Morris <james.l.morris@oracle.com>
----
- security/keys/process_keys.c | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
-index a3f85d2..e6d50172 100644
---- a/security/keys/process_keys.c
-+++ b/security/keys/process_keys.c
-@@ -794,6 +794,7 @@ long join_session_keyring(const char *name)
- ret = PTR_ERR(keyring);
- goto error2;
- } else if (keyring == new->session_keyring) {
-+ key_put(keyring);
- ret = 0;
- goto error2;
- }
---
-cgit v0.12
-
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2016-01-20 13:54 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2016-01-20 13:54 UTC (permalink / raw
To: gentoo-commits
commit: ec211dd8b245afecea707cdc1aa7cd258866312d
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Jan 20 13:54:44 2016 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Jan 20 13:54:44 2016 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=ec211dd8
Ensure that thread joining a session keyring does not leak the keyring reference. CVE-2016-0728.
0000_README | 4 ++
...ing-refleak-in-join-session-CVE-2016-0728.patch | 81 ++++++++++++++++++++++
2 files changed, 85 insertions(+)
diff --git a/0000_README b/0000_README
index 2294ce5..18a8ebc 100644
--- a/0000_README
+++ b/0000_README
@@ -111,6 +111,10 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
Desc: Enable link security restrictions by default.
+Patch: 1520_keyring-refleak-in-join-session-CVE-2016-0728.patch
+From: https://bugs.gentoo.org/show_bug.cgi?id=572384
+Desc: Ensure that thread joining a session keyring does not leak the keyring reference. CVE-2016-0728.
+
Patch: 2700_ThinkPad-30-brightness-control-fix.patch
From: Seth Forshee <seth.forshee@canonical.com>
Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
diff --git a/1520_keyring-refleak-in-join-session-CVE-2016-0728.patch b/1520_keyring-refleak-in-join-session-CVE-2016-0728.patch
new file mode 100644
index 0000000..49020d7
--- /dev/null
+++ b/1520_keyring-refleak-in-join-session-CVE-2016-0728.patch
@@ -0,0 +1,81 @@
+From 23567fd052a9abb6d67fe8e7a9ccdd9800a540f2 Mon Sep 17 00:00:00 2001
+From: Yevgeny Pats <yevgeny@perception-point.io>
+Date: Tue, 19 Jan 2016 22:09:04 +0000
+Subject: KEYS: Fix keyring ref leak in join_session_keyring()
+
+This fixes CVE-2016-0728.
+
+If a thread is asked to join as a session keyring the keyring that's already
+set as its session, we leak a keyring reference.
+
+This can be tested with the following program:
+
+ #include <stddef.h>
+ #include <stdio.h>
+ #include <sys/types.h>
+ #include <keyutils.h>
+
+ int main(int argc, const char *argv[])
+ {
+ int i = 0;
+ key_serial_t serial;
+
+ serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING,
+ "leaked-keyring");
+ if (serial < 0) {
+ perror("keyctl");
+ return -1;
+ }
+
+ if (keyctl(KEYCTL_SETPERM, serial,
+ KEY_POS_ALL | KEY_USR_ALL) < 0) {
+ perror("keyctl");
+ return -1;
+ }
+
+ for (i = 0; i < 100; i++) {
+ serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING,
+ "leaked-keyring");
+ if (serial < 0) {
+ perror("keyctl");
+ return -1;
+ }
+ }
+
+ return 0;
+ }
+
+If, after the program has run, there something like the following line in
+/proc/keys:
+
+3f3d898f I--Q--- 100 perm 3f3f0000 0 0 keyring leaked-keyring: empty
+
+with a usage count of 100 * the number of times the program has been run,
+then the kernel is malfunctioning. If leaked-keyring has zero usages or
+has been garbage collected, then the problem is fixed.
+
+Reported-by: Yevgeny Pats <yevgeny@perception-point.io>
+Signed-off-by: David Howells <dhowells@redhat.com>
+Acked-by: Don Zickus <dzickus@redhat.com>
+Acked-by: Prarit Bhargava <prarit@redhat.com>
+Acked-by: Jarod Wilson <jarod@redhat.com>
+Signed-off-by: James Morris <james.l.morris@oracle.com>
+---
+ security/keys/process_keys.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
+index a3f85d2..e6d50172 100644
+--- a/security/keys/process_keys.c
++++ b/security/keys/process_keys.c
+@@ -794,6 +794,7 @@ long join_session_keyring(const char *name)
+ ret = PTR_ERR(keyring);
+ goto error2;
+ } else if (keyring == new->session_keyring) {
++ key_put(keyring);
+ ret = 0;
+ goto error2;
+ }
+--
+cgit v0.12
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-12-15 11:17 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-12-15 11:17 UTC (permalink / raw
To: gentoo-commits
commit: 56e69a84070c5284582a1a12b7670397aaa78c7e
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Dec 15 11:16:50 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Dec 15 11:16:50 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=56e69a84
Linux patch 4.1.15
0000_README | 4 +
1014_linux-4.1.15.patch | 2619 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2623 insertions(+)
diff --git a/0000_README b/0000_README
index bb7a9d9..2294ce5 100644
--- a/0000_README
+++ b/0000_README
@@ -99,6 +99,10 @@ Patch: 1013_linux-4.1.14.patch
From: http://www.kernel.org
Desc: Linux 4.1.14
+Patch: 1014_linux-4.1.15.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.15
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1014_linux-4.1.15.patch b/1014_linux-4.1.15.patch
new file mode 100644
index 0000000..114781b
--- /dev/null
+++ b/1014_linux-4.1.15.patch
@@ -0,0 +1,2619 @@
+diff --git a/Makefile b/Makefile
+index 091280d66452..cf35f6bcffd8 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 14
++SUBLEVEL = 15
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
+index 1ec6441fe2a5..09138ceba046 100644
+--- a/drivers/block/rbd.c
++++ b/drivers/block/rbd.c
+@@ -3417,6 +3417,7 @@ static void rbd_queue_workfn(struct work_struct *work)
+ goto err_rq;
+ }
+ img_request->rq = rq;
++ snapc = NULL; /* img_request consumes a ref */
+
+ if (op_type == OBJ_OP_DISCARD)
+ result = rbd_img_request_fill(img_request, OBJ_REQUEST_NODATA,
+diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
+index f51d376d10ba..c2f5117fd8cb 100644
+--- a/drivers/firewire/ohci.c
++++ b/drivers/firewire/ohci.c
+@@ -3675,6 +3675,11 @@ static int pci_probe(struct pci_dev *dev,
+
+ reg_write(ohci, OHCI1394_IsoXmitIntMaskSet, ~0);
+ ohci->it_context_support = reg_read(ohci, OHCI1394_IsoXmitIntMaskSet);
++ /* JMicron JMB38x often shows 0 at first read, just ignore it */
++ if (!ohci->it_context_support) {
++ ohci_notice(ohci, "overriding IsoXmitIntMask\n");
++ ohci->it_context_support = 0xf;
++ }
+ reg_write(ohci, OHCI1394_IsoXmitIntMaskClear, ~0);
+ ohci->it_context_mask = ohci->it_context_support;
+ ohci->n_it = hweight32(ohci->it_context_mask);
+diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
+index 9c71295f2fef..85e640440bd9 100644
+--- a/drivers/net/phy/broadcom.c
++++ b/drivers/net/phy/broadcom.c
+@@ -675,7 +675,7 @@ static struct mdio_device_id __maybe_unused broadcom_tbl[] = {
+ { PHY_ID_BCM5461, 0xfffffff0 },
+ { PHY_ID_BCM54616S, 0xfffffff0 },
+ { PHY_ID_BCM5464, 0xfffffff0 },
+- { PHY_ID_BCM5482, 0xfffffff0 },
++ { PHY_ID_BCM5481, 0xfffffff0 },
+ { PHY_ID_BCM5482, 0xfffffff0 },
+ { PHY_ID_BCM50610, 0xfffffff0 },
+ { PHY_ID_BCM50610M, 0xfffffff0 },
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index 4e0470d396a3..71190dc1eacf 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -774,6 +774,7 @@ static const struct usb_device_id products[] = {
+ {QMI_FIXED_INTF(0x2357, 0x9000, 4)}, /* TP-LINK MA260 */
+ {QMI_FIXED_INTF(0x1bc7, 0x1200, 5)}, /* Telit LE920 */
+ {QMI_FIXED_INTF(0x1bc7, 0x1201, 2)}, /* Telit LE920 */
++ {QMI_FIXED_INTF(0x1c9e, 0x9b01, 3)}, /* XS Stick W100-2 from 4G Systems */
+ {QMI_FIXED_INTF(0x0b3c, 0xc000, 4)}, /* Olivetti Olicard 100 */
+ {QMI_FIXED_INTF(0x0b3c, 0xc001, 4)}, /* Olivetti Olicard 120 */
+ {QMI_FIXED_INTF(0x0b3c, 0xc002, 4)}, /* Olivetti Olicard 140 */
+diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
+index b072e17479aa..2b0d84d32db4 100644
+--- a/fs/btrfs/file.c
++++ b/fs/btrfs/file.c
+@@ -756,8 +756,16 @@ next_slot:
+ }
+
+ btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
+- if (key.objectid > ino ||
+- key.type > BTRFS_EXTENT_DATA_KEY || key.offset >= end)
++
++ if (key.objectid > ino)
++ break;
++ if (WARN_ON_ONCE(key.objectid < ino) ||
++ key.type < BTRFS_EXTENT_DATA_KEY) {
++ ASSERT(del_nr == 0);
++ path->slots[0]++;
++ goto next_slot;
++ }
++ if (key.type > BTRFS_EXTENT_DATA_KEY || key.offset >= end)
+ break;
+
+ fi = btrfs_item_ptr(leaf, path->slots[0],
+@@ -776,8 +784,8 @@ next_slot:
+ btrfs_file_extent_inline_len(leaf,
+ path->slots[0], fi);
+ } else {
+- WARN_ON(1);
+- extent_end = search_start;
++ /* can't happen */
++ BUG();
+ }
+
+ /*
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index e3b39f0c4666..5136c73b3dce 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -1294,8 +1294,14 @@ next_slot:
+ num_bytes = 0;
+ btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
+
+- if (found_key.objectid > ino ||
+- found_key.type > BTRFS_EXTENT_DATA_KEY ||
++ if (found_key.objectid > ino)
++ break;
++ if (WARN_ON_ONCE(found_key.objectid < ino) ||
++ found_key.type < BTRFS_EXTENT_DATA_KEY) {
++ path->slots[0]++;
++ goto next_slot;
++ }
++ if (found_key.type > BTRFS_EXTENT_DATA_KEY ||
+ found_key.offset > end)
+ break;
+
+@@ -4184,6 +4190,47 @@ static int truncate_space_check(struct btrfs_trans_handle *trans,
+
+ }
+
++static int truncate_inline_extent(struct inode *inode,
++ struct btrfs_path *path,
++ struct btrfs_key *found_key,
++ const u64 item_end,
++ const u64 new_size)
++{
++ struct extent_buffer *leaf = path->nodes[0];
++ int slot = path->slots[0];
++ struct btrfs_file_extent_item *fi;
++ u32 size = (u32)(new_size - found_key->offset);
++ struct btrfs_root *root = BTRFS_I(inode)->root;
++
++ fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
++
++ if (btrfs_file_extent_compression(leaf, fi) != BTRFS_COMPRESS_NONE) {
++ loff_t offset = new_size;
++ loff_t page_end = ALIGN(offset, PAGE_CACHE_SIZE);
++
++ /*
++ * Zero out the remaining of the last page of our inline extent,
++ * instead of directly truncating our inline extent here - that
++ * would be much more complex (decompressing all the data, then
++ * compressing the truncated data, which might be bigger than
++ * the size of the inline extent, resize the extent, etc).
++ * We release the path because to get the page we might need to
++ * read the extent item from disk (data not in the page cache).
++ */
++ btrfs_release_path(path);
++ return btrfs_truncate_page(inode, offset, page_end - offset, 0);
++ }
++
++ btrfs_set_file_extent_ram_bytes(leaf, fi, size);
++ size = btrfs_file_extent_calc_inline_size(size);
++ btrfs_truncate_item(root, path, size, 1);
++
++ if (test_bit(BTRFS_ROOT_REF_COWS, &root->state))
++ inode_sub_bytes(inode, item_end + 1 - new_size);
++
++ return 0;
++}
++
+ /*
+ * this can truncate away extent items, csum items and directory items.
+ * It starts at a high offset and removes keys until it can't find
+@@ -4378,27 +4425,40 @@ search_again:
+ * special encodings
+ */
+ if (!del_item &&
+- btrfs_file_extent_compression(leaf, fi) == 0 &&
+ btrfs_file_extent_encryption(leaf, fi) == 0 &&
+ btrfs_file_extent_other_encoding(leaf, fi) == 0) {
+- u32 size = new_size - found_key.offset;
+-
+- if (test_bit(BTRFS_ROOT_REF_COWS, &root->state))
+- inode_sub_bytes(inode, item_end + 1 -
+- new_size);
+
+ /*
+- * update the ram bytes to properly reflect
+- * the new size of our item
++ * Need to release path in order to truncate a
++ * compressed extent. So delete any accumulated
++ * extent items so far.
+ */
+- btrfs_set_file_extent_ram_bytes(leaf, fi, size);
+- size =
+- btrfs_file_extent_calc_inline_size(size);
+- btrfs_truncate_item(root, path, size, 1);
++ if (btrfs_file_extent_compression(leaf, fi) !=
++ BTRFS_COMPRESS_NONE && pending_del_nr) {
++ err = btrfs_del_items(trans, root, path,
++ pending_del_slot,
++ pending_del_nr);
++ if (err) {
++ btrfs_abort_transaction(trans,
++ root,
++ err);
++ goto error;
++ }
++ pending_del_nr = 0;
++ }
++
++ err = truncate_inline_extent(inode, path,
++ &found_key,
++ item_end,
++ new_size);
++ if (err) {
++ btrfs_abort_transaction(trans,
++ root, err);
++ goto error;
++ }
+ } else if (test_bit(BTRFS_ROOT_REF_COWS,
+ &root->state)) {
+- inode_sub_bytes(inode, item_end + 1 -
+- found_key.offset);
++ inode_sub_bytes(inode, item_end + 1 - new_size);
+ }
+ }
+ delete:
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index 8b2c82ce36b3..87c720865ebf 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -3166,6 +3166,150 @@ static void clone_update_extent_map(struct inode *inode,
+ &BTRFS_I(inode)->runtime_flags);
+ }
+
++/*
++ * Make sure we do not end up inserting an inline extent into a file that has
++ * already other (non-inline) extents. If a file has an inline extent it can
++ * not have any other extents and the (single) inline extent must start at the
++ * file offset 0. Failing to respect these rules will lead to file corruption,
++ * resulting in EIO errors on read/write operations, hitting BUG_ON's in mm, etc
++ *
++ * We can have extents that have been already written to disk or we can have
++ * dirty ranges still in delalloc, in which case the extent maps and items are
++ * created only when we run delalloc, and the delalloc ranges might fall outside
++ * the range we are currently locking in the inode's io tree. So we check the
++ * inode's i_size because of that (i_size updates are done while holding the
++ * i_mutex, which we are holding here).
++ * We also check to see if the inode has a size not greater than "datal" but has
++ * extents beyond it, due to an fallocate with FALLOC_FL_KEEP_SIZE (and we are
++ * protected against such concurrent fallocate calls by the i_mutex).
++ *
++ * If the file has no extents but a size greater than datal, do not allow the
++ * copy because we would need turn the inline extent into a non-inline one (even
++ * with NO_HOLES enabled). If we find our destination inode only has one inline
++ * extent, just overwrite it with the source inline extent if its size is less
++ * than the source extent's size, or we could copy the source inline extent's
++ * data into the destination inode's inline extent if the later is greater then
++ * the former.
++ */
++static int clone_copy_inline_extent(struct inode *src,
++ struct inode *dst,
++ struct btrfs_trans_handle *trans,
++ struct btrfs_path *path,
++ struct btrfs_key *new_key,
++ const u64 drop_start,
++ const u64 datal,
++ const u64 skip,
++ const u64 size,
++ char *inline_data)
++{
++ struct btrfs_root *root = BTRFS_I(dst)->root;
++ const u64 aligned_end = ALIGN(new_key->offset + datal,
++ root->sectorsize);
++ int ret;
++ struct btrfs_key key;
++
++ if (new_key->offset > 0)
++ return -EOPNOTSUPP;
++
++ key.objectid = btrfs_ino(dst);
++ key.type = BTRFS_EXTENT_DATA_KEY;
++ key.offset = 0;
++ ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
++ if (ret < 0) {
++ return ret;
++ } else if (ret > 0) {
++ if (path->slots[0] >= btrfs_header_nritems(path->nodes[0])) {
++ ret = btrfs_next_leaf(root, path);
++ if (ret < 0)
++ return ret;
++ else if (ret > 0)
++ goto copy_inline_extent;
++ }
++ btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
++ if (key.objectid == btrfs_ino(dst) &&
++ key.type == BTRFS_EXTENT_DATA_KEY) {
++ ASSERT(key.offset > 0);
++ return -EOPNOTSUPP;
++ }
++ } else if (i_size_read(dst) <= datal) {
++ struct btrfs_file_extent_item *ei;
++ u64 ext_len;
++
++ /*
++ * If the file size is <= datal, make sure there are no other
++ * extents following (can happen do to an fallocate call with
++ * the flag FALLOC_FL_KEEP_SIZE).
++ */
++ ei = btrfs_item_ptr(path->nodes[0], path->slots[0],
++ struct btrfs_file_extent_item);
++ /*
++ * If it's an inline extent, it can not have other extents
++ * following it.
++ */
++ if (btrfs_file_extent_type(path->nodes[0], ei) ==
++ BTRFS_FILE_EXTENT_INLINE)
++ goto copy_inline_extent;
++
++ ext_len = btrfs_file_extent_num_bytes(path->nodes[0], ei);
++ if (ext_len > aligned_end)
++ return -EOPNOTSUPP;
++
++ ret = btrfs_next_item(root, path);
++ if (ret < 0) {
++ return ret;
++ } else if (ret == 0) {
++ btrfs_item_key_to_cpu(path->nodes[0], &key,
++ path->slots[0]);
++ if (key.objectid == btrfs_ino(dst) &&
++ key.type == BTRFS_EXTENT_DATA_KEY)
++ return -EOPNOTSUPP;
++ }
++ }
++
++copy_inline_extent:
++ /*
++ * We have no extent items, or we have an extent at offset 0 which may
++ * or may not be inlined. All these cases are dealt the same way.
++ */
++ if (i_size_read(dst) > datal) {
++ /*
++ * If the destination inode has an inline extent...
++ * This would require copying the data from the source inline
++ * extent into the beginning of the destination's inline extent.
++ * But this is really complex, both extents can be compressed
++ * or just one of them, which would require decompressing and
++ * re-compressing data (which could increase the new compressed
++ * size, not allowing the compressed data to fit anymore in an
++ * inline extent).
++ * So just don't support this case for now (it should be rare,
++ * we are not really saving space when cloning inline extents).
++ */
++ return -EOPNOTSUPP;
++ }
++
++ btrfs_release_path(path);
++ ret = btrfs_drop_extents(trans, root, dst, drop_start, aligned_end, 1);
++ if (ret)
++ return ret;
++ ret = btrfs_insert_empty_item(trans, root, path, new_key, size);
++ if (ret)
++ return ret;
++
++ if (skip) {
++ const u32 start = btrfs_file_extent_calc_inline_size(0);
++
++ memmove(inline_data + start, inline_data + start + skip, datal);
++ }
++
++ write_extent_buffer(path->nodes[0], inline_data,
++ btrfs_item_ptr_offset(path->nodes[0],
++ path->slots[0]),
++ size);
++ inode_add_bytes(dst, datal);
++
++ return 0;
++}
++
+ /**
+ * btrfs_clone() - clone a range from inode file to another
+ *
+@@ -3432,21 +3576,6 @@ process_slot:
+ } else if (type == BTRFS_FILE_EXTENT_INLINE) {
+ u64 skip = 0;
+ u64 trim = 0;
+- u64 aligned_end = 0;
+-
+- /*
+- * Don't copy an inline extent into an offset
+- * greater than zero. Having an inline extent
+- * at such an offset results in chaos as btrfs
+- * isn't prepared for such cases. Just skip
+- * this case for the same reasons as commented
+- * at btrfs_ioctl_clone().
+- */
+- if (last_dest_end > 0) {
+- ret = -EOPNOTSUPP;
+- btrfs_end_transaction(trans, root);
+- goto out;
+- }
+
+ if (off > key.offset) {
+ skip = off - key.offset;
+@@ -3464,42 +3593,22 @@ process_slot:
+ size -= skip + trim;
+ datal -= skip + trim;
+
+- aligned_end = ALIGN(new_key.offset + datal,
+- root->sectorsize);
+- ret = btrfs_drop_extents(trans, root, inode,
+- drop_start,
+- aligned_end,
+- 1);
++ ret = clone_copy_inline_extent(src, inode,
++ trans, path,
++ &new_key,
++ drop_start,
++ datal,
++ skip, size, buf);
+ if (ret) {
+ if (ret != -EOPNOTSUPP)
+ btrfs_abort_transaction(trans,
+- root, ret);
+- btrfs_end_transaction(trans, root);
+- goto out;
+- }
+-
+- ret = btrfs_insert_empty_item(trans, root, path,
+- &new_key, size);
+- if (ret) {
+- btrfs_abort_transaction(trans, root,
+- ret);
++ root,
++ ret);
+ btrfs_end_transaction(trans, root);
+ goto out;
+ }
+-
+- if (skip) {
+- u32 start =
+- btrfs_file_extent_calc_inline_size(0);
+- memmove(buf+start, buf+start+skip,
+- datal);
+- }
+-
+ leaf = path->nodes[0];
+ slot = path->slots[0];
+- write_extent_buffer(leaf, buf,
+- btrfs_item_ptr_offset(leaf, slot),
+- size);
+- inode_add_bytes(inode, datal);
+ }
+
+ /* If we have an implicit hole (NO_HOLES feature). */
+diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
+index 6f518c90e1c1..1fcd7b6e7564 100644
+--- a/fs/btrfs/xattr.c
++++ b/fs/btrfs/xattr.c
+@@ -313,8 +313,10 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
+ /* check to make sure this item is what we want */
+ if (found_key.objectid != key.objectid)
+ break;
+- if (found_key.type != BTRFS_XATTR_ITEM_KEY)
++ if (found_key.type > BTRFS_XATTR_ITEM_KEY)
+ break;
++ if (found_key.type < BTRFS_XATTR_ITEM_KEY)
++ goto next;
+
+ di = btrfs_item_ptr(leaf, slot, struct btrfs_dir_item);
+ if (verify_dir_item(root, leaf, di))
+diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
+index 84f37f34f9aa..1e99b29650a9 100644
+--- a/fs/ceph/mds_client.c
++++ b/fs/ceph/mds_client.c
+@@ -1905,7 +1905,7 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
+
+ len = sizeof(*head) +
+ pathlen1 + pathlen2 + 2*(1 + sizeof(u32) + sizeof(u64)) +
+- sizeof(struct timespec);
++ sizeof(struct ceph_timespec);
+
+ /* calculate (max) length for cap releases */
+ len += sizeof(struct ceph_mds_request_release) *
+diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
+index 12756040ca20..8bec8f1e4b31 100644
+--- a/fs/debugfs/inode.c
++++ b/fs/debugfs/inode.c
+@@ -276,8 +276,12 @@ static struct dentry *start_creating(const char *name, struct dentry *parent)
+ dput(dentry);
+ dentry = ERR_PTR(-EEXIST);
+ }
+- if (IS_ERR(dentry))
++
++ if (IS_ERR(dentry)) {
+ mutex_unlock(&d_inode(parent)->i_mutex);
++ simple_release_fs(&debugfs_mount, &debugfs_mount_count);
++ }
++
+ return dentry;
+ }
+
+diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
+index d41843181818..e770c1ee4613 100644
+--- a/fs/ext4/ext4_jbd2.c
++++ b/fs/ext4/ext4_jbd2.c
+@@ -88,13 +88,13 @@ int __ext4_journal_stop(const char *where, unsigned int line, handle_t *handle)
+ return 0;
+ }
+
++ err = handle->h_err;
+ if (!handle->h_transaction) {
+- err = jbd2_journal_stop(handle);
+- return handle->h_err ? handle->h_err : err;
++ rc = jbd2_journal_stop(handle);
++ return err ? err : rc;
+ }
+
+ sb = handle->h_transaction->t_journal->j_private;
+- err = handle->h_err;
+ rc = jbd2_journal_stop(handle);
+
+ if (!err)
+diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
+index 5765f88b3904..8082565c59a9 100644
+--- a/fs/ext4/page-io.c
++++ b/fs/ext4/page-io.c
+@@ -426,6 +426,7 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
+ struct buffer_head *bh, *head;
+ int ret = 0;
+ int nr_submitted = 0;
++ int nr_to_submit = 0;
+
+ blocksize = 1 << inode->i_blkbits;
+
+@@ -478,11 +479,13 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
+ unmap_underlying_metadata(bh->b_bdev, bh->b_blocknr);
+ }
+ set_buffer_async_write(bh);
++ nr_to_submit++;
+ } while ((bh = bh->b_this_page) != head);
+
+ bh = head = page_buffers(page);
+
+- if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode)) {
++ if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode) &&
++ nr_to_submit) {
+ data_page = ext4_encrypt(inode, page);
+ if (IS_ERR(data_page)) {
+ ret = PTR_ERR(data_page);
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index ff89971e3ee0..8a3b9f14d198 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -396,9 +396,13 @@ static void ext4_handle_error(struct super_block *sb)
+ smp_wmb();
+ sb->s_flags |= MS_RDONLY;
+ }
+- if (test_opt(sb, ERRORS_PANIC))
++ if (test_opt(sb, ERRORS_PANIC)) {
++ if (EXT4_SB(sb)->s_journal &&
++ !(EXT4_SB(sb)->s_journal->j_flags & JBD2_REC_ERR))
++ return;
+ panic("EXT4-fs (device %s): panic forced after error\n",
+ sb->s_id);
++ }
+ }
+
+ #define ext4_error_ratelimit(sb) \
+@@ -587,8 +591,12 @@ void __ext4_abort(struct super_block *sb, const char *function,
+ jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
+ save_error_info(sb, function, line);
+ }
+- if (test_opt(sb, ERRORS_PANIC))
++ if (test_opt(sb, ERRORS_PANIC)) {
++ if (EXT4_SB(sb)->s_journal &&
++ !(EXT4_SB(sb)->s_journal->j_flags & JBD2_REC_ERR))
++ return;
+ panic("EXT4-fs panic from previous error\n");
++ }
+ }
+
+ void __ext4_msg(struct super_block *sb,
+diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
+index 7003c0925760..0469f32918a5 100644
+--- a/fs/jbd2/journal.c
++++ b/fs/jbd2/journal.c
+@@ -2086,8 +2086,12 @@ static void __journal_abort_soft (journal_t *journal, int errno)
+
+ __jbd2_journal_abort_hard(journal);
+
+- if (errno)
++ if (errno) {
+ jbd2_journal_update_sb_errno(journal);
++ write_lock(&journal->j_state_lock);
++ journal->j_flags |= JBD2_REC_ERR;
++ write_unlock(&journal->j_state_lock);
++ }
+ }
+
+ /**
+diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
+index 976ba792fbc6..7f22b6c6fb50 100644
+--- a/fs/nfs/inode.c
++++ b/fs/nfs/inode.c
+@@ -1813,7 +1813,11 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ if ((long)fattr->gencount - (long)nfsi->attr_gencount > 0)
+ nfsi->attr_gencount = fattr->gencount;
+ }
+- invalid &= ~NFS_INO_INVALID_ATTR;
++
++ /* Don't declare attrcache up to date if there were no attrs! */
++ if (fattr->valid != 0)
++ invalid &= ~NFS_INO_INVALID_ATTR;
++
+ /* Don't invalidate the data if we were to blame */
+ if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
+ || S_ISLNK(inode->i_mode)))
+diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
+index e42be52a8c18..5dea913baf46 100644
+--- a/fs/nfs/nfs4client.c
++++ b/fs/nfs/nfs4client.c
+@@ -33,7 +33,7 @@ static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
+ return ret;
+ idr_preload(GFP_KERNEL);
+ spin_lock(&nn->nfs_client_lock);
+- ret = idr_alloc(&nn->cb_ident_idr, clp, 0, 0, GFP_NOWAIT);
++ ret = idr_alloc(&nn->cb_ident_idr, clp, 1, 0, GFP_NOWAIT);
+ if (ret >= 0)
+ clp->cl_cb_ident = ret;
+ spin_unlock(&nn->nfs_client_lock);
+diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
+index 397798368b1a..bb6c324f1f3d 100644
+--- a/fs/nfsd/nfs4state.c
++++ b/fs/nfsd/nfs4state.c
+@@ -765,16 +765,68 @@ void nfs4_unhash_stid(struct nfs4_stid *s)
+ s->sc_type = 0;
+ }
+
+-static void
++/**
++ * nfs4_get_existing_delegation - Discover if this delegation already exists
++ * @clp: a pointer to the nfs4_client we're granting a delegation to
++ * @fp: a pointer to the nfs4_file we're granting a delegation on
++ *
++ * Return:
++ * On success: NULL if an existing delegation was not found.
++ *
++ * On error: -EAGAIN if one was previously granted to this nfs4_client
++ * for this nfs4_file.
++ *
++ */
++
++static int
++nfs4_get_existing_delegation(struct nfs4_client *clp, struct nfs4_file *fp)
++{
++ struct nfs4_delegation *searchdp = NULL;
++ struct nfs4_client *searchclp = NULL;
++
++ lockdep_assert_held(&state_lock);
++ lockdep_assert_held(&fp->fi_lock);
++
++ list_for_each_entry(searchdp, &fp->fi_delegations, dl_perfile) {
++ searchclp = searchdp->dl_stid.sc_client;
++ if (clp == searchclp) {
++ return -EAGAIN;
++ }
++ }
++ return 0;
++}
++
++/**
++ * hash_delegation_locked - Add a delegation to the appropriate lists
++ * @dp: a pointer to the nfs4_delegation we are adding.
++ * @fp: a pointer to the nfs4_file we're granting a delegation on
++ *
++ * Return:
++ * On success: NULL if the delegation was successfully hashed.
++ *
++ * On error: -EAGAIN if one was previously granted to this
++ * nfs4_client for this nfs4_file. Delegation is not hashed.
++ *
++ */
++
++static int
+ hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
+ {
++ int status;
++ struct nfs4_client *clp = dp->dl_stid.sc_client;
++
+ lockdep_assert_held(&state_lock);
+ lockdep_assert_held(&fp->fi_lock);
+
++ status = nfs4_get_existing_delegation(clp, fp);
++ if (status)
++ return status;
++ ++fp->fi_delegees;
+ atomic_inc(&dp->dl_stid.sc_count);
+ dp->dl_stid.sc_type = NFS4_DELEG_STID;
+ list_add(&dp->dl_perfile, &fp->fi_delegations);
+- list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
++ list_add(&dp->dl_perclnt, &clp->cl_delegations);
++ return 0;
+ }
+
+ static bool
+@@ -3351,6 +3403,7 @@ static void init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp,
+ stp->st_access_bmap = 0;
+ stp->st_deny_bmap = 0;
+ stp->st_openstp = NULL;
++ init_rwsem(&stp->st_rwsem);
+ spin_lock(&oo->oo_owner.so_client->cl_lock);
+ list_add(&stp->st_perstateowner, &oo->oo_owner.so_stateids);
+ spin_lock(&fp->fi_lock);
+@@ -3940,6 +3993,18 @@ static struct file_lock *nfs4_alloc_init_lease(struct nfs4_file *fp, int flag)
+ return fl;
+ }
+
++/**
++ * nfs4_setlease - Obtain a delegation by requesting lease from vfs layer
++ * @dp: a pointer to the nfs4_delegation we're adding.
++ *
++ * Return:
++ * On success: Return code will be 0 on success.
++ *
++ * On error: -EAGAIN if there was an existing delegation.
++ * nonzero if there is an error in other cases.
++ *
++ */
++
+ static int nfs4_setlease(struct nfs4_delegation *dp)
+ {
+ struct nfs4_file *fp = dp->dl_stid.sc_file;
+@@ -3971,16 +4036,19 @@ static int nfs4_setlease(struct nfs4_delegation *dp)
+ goto out_unlock;
+ /* Race breaker */
+ if (fp->fi_deleg_file) {
+- status = 0;
+- ++fp->fi_delegees;
+- hash_delegation_locked(dp, fp);
++ status = hash_delegation_locked(dp, fp);
+ goto out_unlock;
+ }
+ fp->fi_deleg_file = filp;
+- fp->fi_delegees = 1;
+- hash_delegation_locked(dp, fp);
++ fp->fi_delegees = 0;
++ status = hash_delegation_locked(dp, fp);
+ spin_unlock(&fp->fi_lock);
+ spin_unlock(&state_lock);
++ if (status) {
++ /* Should never happen, this is a new fi_deleg_file */
++ WARN_ON_ONCE(1);
++ goto out_fput;
++ }
+ return 0;
+ out_unlock:
+ spin_unlock(&fp->fi_lock);
+@@ -4000,6 +4068,15 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh,
+ if (fp->fi_had_conflict)
+ return ERR_PTR(-EAGAIN);
+
++ spin_lock(&state_lock);
++ spin_lock(&fp->fi_lock);
++ status = nfs4_get_existing_delegation(clp, fp);
++ spin_unlock(&fp->fi_lock);
++ spin_unlock(&state_lock);
++
++ if (status)
++ return ERR_PTR(status);
++
+ dp = alloc_init_deleg(clp, fh, odstate);
+ if (!dp)
+ return ERR_PTR(-ENOMEM);
+@@ -4018,9 +4095,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh,
+ status = -EAGAIN;
+ goto out_unlock;
+ }
+- ++fp->fi_delegees;
+- hash_delegation_locked(dp, fp);
+- status = 0;
++ status = hash_delegation_locked(dp, fp);
+ out_unlock:
+ spin_unlock(&fp->fi_lock);
+ spin_unlock(&state_lock);
+@@ -4181,15 +4256,20 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
+ */
+ if (stp) {
+ /* Stateid was found, this is an OPEN upgrade */
++ down_read(&stp->st_rwsem);
+ status = nfs4_upgrade_open(rqstp, fp, current_fh, stp, open);
+- if (status)
++ if (status) {
++ up_read(&stp->st_rwsem);
+ goto out;
++ }
+ } else {
+ stp = open->op_stp;
+ open->op_stp = NULL;
+ init_open_stateid(stp, fp, open);
++ down_read(&stp->st_rwsem);
+ status = nfs4_get_vfs_file(rqstp, fp, current_fh, stp, open);
+ if (status) {
++ up_read(&stp->st_rwsem);
+ release_open_stateid(stp);
+ goto out;
+ }
+@@ -4201,6 +4281,7 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
+ }
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&open->op_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
++ up_read(&stp->st_rwsem);
+
+ if (nfsd4_has_session(&resp->cstate)) {
+ if (open->op_deleg_want & NFS4_SHARE_WANT_NO_DELEG) {
+@@ -4777,10 +4858,13 @@ static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_
+ * revoked delegations are kept only for free_stateid.
+ */
+ return nfserr_bad_stateid;
++ down_write(&stp->st_rwsem);
+ status = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, nfsd4_has_session(cstate));
+- if (status)
+- return status;
+- return nfs4_check_fh(current_fh, &stp->st_stid);
++ if (status == nfs_ok)
++ status = nfs4_check_fh(current_fh, &stp->st_stid);
++ if (status != nfs_ok)
++ up_write(&stp->st_rwsem);
++ return status;
+ }
+
+ /*
+@@ -4827,6 +4911,7 @@ static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cs
+ return status;
+ oo = openowner(stp->st_stateowner);
+ if (!(oo->oo_flags & NFS4_OO_CONFIRMED)) {
++ up_write(&stp->st_rwsem);
+ nfs4_put_stid(&stp->st_stid);
+ return nfserr_bad_stateid;
+ }
+@@ -4857,11 +4942,14 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ goto out;
+ oo = openowner(stp->st_stateowner);
+ status = nfserr_bad_stateid;
+- if (oo->oo_flags & NFS4_OO_CONFIRMED)
++ if (oo->oo_flags & NFS4_OO_CONFIRMED) {
++ up_write(&stp->st_rwsem);
+ goto put_stateid;
++ }
+ oo->oo_flags |= NFS4_OO_CONFIRMED;
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&oc->oc_resp_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
++ up_write(&stp->st_rwsem);
+ dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n",
+ __func__, oc->oc_seqid, STATEID_VAL(&stp->st_stid.sc_stateid));
+
+@@ -4940,6 +5028,7 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
+ memcpy(&od->od_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
+ status = nfs_ok;
+ put_stateid:
++ up_write(&stp->st_rwsem);
+ nfs4_put_stid(&stp->st_stid);
+ out:
+ nfsd4_bump_seqid(cstate, status);
+@@ -4993,6 +5082,7 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ goto out;
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&close->cl_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
++ up_write(&stp->st_rwsem);
+
+ nfsd4_close_open_stateid(stp);
+
+@@ -5223,6 +5313,7 @@ init_lock_stateid(struct nfs4_ol_stateid *stp, struct nfs4_lockowner *lo,
+ stp->st_access_bmap = 0;
+ stp->st_deny_bmap = open_stp->st_deny_bmap;
+ stp->st_openstp = open_stp;
++ init_rwsem(&stp->st_rwsem);
+ list_add(&stp->st_locks, &open_stp->st_locks);
+ list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids);
+ spin_lock(&fp->fi_lock);
+@@ -5391,6 +5482,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ &open_stp, nn);
+ if (status)
+ goto out;
++ up_write(&open_stp->st_rwsem);
+ open_sop = openowner(open_stp->st_stateowner);
+ status = nfserr_bad_stateid;
+ if (!same_clid(&open_sop->oo_owner.so_client->cl_clientid,
+@@ -5398,6 +5490,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ goto out;
+ status = lookup_or_create_lock_state(cstate, open_stp, lock,
+ &lock_stp, &new);
++ if (status == nfs_ok)
++ down_write(&lock_stp->st_rwsem);
+ } else {
+ status = nfs4_preprocess_seqid_op(cstate,
+ lock->lk_old_lock_seqid,
+@@ -5503,6 +5597,8 @@ out:
+ seqid_mutating_err(ntohl(status)))
+ lock_sop->lo_owner.so_seqid++;
+
++ up_write(&lock_stp->st_rwsem);
++
+ /*
+ * If this is a new, never-before-used stateid, and we are
+ * returning an error, then just go ahead and release it.
+@@ -5673,6 +5769,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ fput:
+ fput(filp);
+ put_stateid:
++ up_write(&stp->st_rwsem);
+ nfs4_put_stid(&stp->st_stid);
+ out:
+ nfsd4_bump_seqid(cstate, status);
+diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
+index dbc4f85a5008..67685b6cfef3 100644
+--- a/fs/nfsd/state.h
++++ b/fs/nfsd/state.h
+@@ -533,15 +533,16 @@ struct nfs4_file {
+ * Better suggestions welcome.
+ */
+ struct nfs4_ol_stateid {
+- struct nfs4_stid st_stid; /* must be first field */
+- struct list_head st_perfile;
+- struct list_head st_perstateowner;
+- struct list_head st_locks;
+- struct nfs4_stateowner * st_stateowner;
+- struct nfs4_clnt_odstate * st_clnt_odstate;
+- unsigned char st_access_bmap;
+- unsigned char st_deny_bmap;
+- struct nfs4_ol_stateid * st_openstp;
++ struct nfs4_stid st_stid;
++ struct list_head st_perfile;
++ struct list_head st_perstateowner;
++ struct list_head st_locks;
++ struct nfs4_stateowner *st_stateowner;
++ struct nfs4_clnt_odstate *st_clnt_odstate;
++ unsigned char st_access_bmap;
++ unsigned char st_deny_bmap;
++ struct nfs4_ol_stateid *st_openstp;
++ struct rw_semaphore st_rwsem;
+ };
+
+ static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s)
+diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
+index 176fe6afd94e..4d5e0a573f4f 100644
+--- a/fs/ocfs2/namei.c
++++ b/fs/ocfs2/namei.c
+@@ -365,6 +365,8 @@ static int ocfs2_mknod(struct inode *dir,
+ mlog_errno(status);
+ goto leave;
+ }
++ /* update inode->i_mode after mask with "umask". */
++ inode->i_mode = mode;
+
+ handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
+ S_ISDIR(mode),
+diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
+index 82806c60aa42..e4b464983322 100644
+--- a/include/linux/ipv6.h
++++ b/include/linux/ipv6.h
+@@ -224,7 +224,7 @@ struct ipv6_pinfo {
+ struct ipv6_ac_socklist *ipv6_ac_list;
+ struct ipv6_fl_socklist __rcu *ipv6_fl_list;
+
+- struct ipv6_txoptions *opt;
++ struct ipv6_txoptions __rcu *opt;
+ struct sk_buff *pktoptions;
+ struct sk_buff *rxpmtu;
+ struct inet6_cork cork;
+diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
+index eb1cebed3f36..c90c9b70e568 100644
+--- a/include/linux/jbd2.h
++++ b/include/linux/jbd2.h
+@@ -1007,6 +1007,7 @@ struct journal_s
+ #define JBD2_ABORT_ON_SYNCDATA_ERR 0x040 /* Abort the journal on file
+ * data write error in ordered
+ * mode */
++#define JBD2_REC_ERR 0x080 /* The errno in the sb has been recorded */
+
+ /*
+ * Function declarations for the journaling transaction and buffer
+diff --git a/include/net/af_unix.h b/include/net/af_unix.h
+index dfe4ddfbb43c..e830c3dff61a 100644
+--- a/include/net/af_unix.h
++++ b/include/net/af_unix.h
+@@ -63,6 +63,7 @@ struct unix_sock {
+ #define UNIX_GC_CANDIDATE 0
+ #define UNIX_GC_MAYBE_CYCLE 1
+ struct socket_wq peer_wq;
++ wait_queue_t peer_wake;
+ };
+
+ static inline struct unix_sock *unix_sk(struct sock *sk)
+diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h
+index b8529aa1dae7..b0f7445c0fdc 100644
+--- a/include/net/ip6_tunnel.h
++++ b/include/net/ip6_tunnel.h
+@@ -83,11 +83,12 @@ static inline void ip6tunnel_xmit(struct sock *sk, struct sk_buff *skb,
+ err = ip6_local_out_sk(sk, skb);
+
+ if (net_xmit_eval(err) == 0) {
+- struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
++ struct pcpu_sw_netstats *tstats = get_cpu_ptr(dev->tstats);
+ u64_stats_update_begin(&tstats->syncp);
+ tstats->tx_bytes += pkt_len;
+ tstats->tx_packets++;
+ u64_stats_update_end(&tstats->syncp);
++ put_cpu_ptr(tstats);
+ } else {
+ stats->tx_errors++;
+ stats->tx_aborted_errors++;
+diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
+index d8214cb88bbc..9c2897e56ee1 100644
+--- a/include/net/ip_tunnels.h
++++ b/include/net/ip_tunnels.h
+@@ -207,12 +207,13 @@ static inline void iptunnel_xmit_stats(int err,
+ struct pcpu_sw_netstats __percpu *stats)
+ {
+ if (err > 0) {
+- struct pcpu_sw_netstats *tstats = this_cpu_ptr(stats);
++ struct pcpu_sw_netstats *tstats = get_cpu_ptr(stats);
+
+ u64_stats_update_begin(&tstats->syncp);
+ tstats->tx_bytes += err;
+ tstats->tx_packets++;
+ u64_stats_update_end(&tstats->syncp);
++ put_cpu_ptr(tstats);
+ } else if (err < 0) {
+ err_stats->tx_errors++;
+ err_stats->tx_aborted_errors++;
+diff --git a/include/net/ipv6.h b/include/net/ipv6.h
+index eec8ad3c9843..df555ecd4002 100644
+--- a/include/net/ipv6.h
++++ b/include/net/ipv6.h
+@@ -205,6 +205,7 @@ extern rwlock_t ip6_ra_lock;
+ */
+
+ struct ipv6_txoptions {
++ atomic_t refcnt;
+ /* Length of this structure */
+ int tot_len;
+
+@@ -217,7 +218,7 @@ struct ipv6_txoptions {
+ struct ipv6_opt_hdr *dst0opt;
+ struct ipv6_rt_hdr *srcrt; /* Routing Header */
+ struct ipv6_opt_hdr *dst1opt;
+-
++ struct rcu_head rcu;
+ /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
+ };
+
+@@ -250,6 +251,24 @@ struct ipv6_fl_socklist {
+ struct rcu_head rcu;
+ };
+
++static inline struct ipv6_txoptions *txopt_get(const struct ipv6_pinfo *np)
++{
++ struct ipv6_txoptions *opt;
++
++ rcu_read_lock();
++ opt = rcu_dereference(np->opt);
++ if (opt && !atomic_inc_not_zero(&opt->refcnt))
++ opt = NULL;
++ rcu_read_unlock();
++ return opt;
++}
++
++static inline void txopt_put(struct ipv6_txoptions *opt)
++{
++ if (opt && atomic_dec_and_test(&opt->refcnt))
++ kfree_rcu(opt, rcu);
++}
++
+ struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
+ struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space,
+ struct ip6_flowlabel *fl,
+@@ -488,6 +507,7 @@ struct ip6_create_arg {
+ u32 user;
+ const struct in6_addr *src;
+ const struct in6_addr *dst;
++ int iif;
+ u8 ecn;
+ };
+
+diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
+index 6d778efcfdfd..080b657ef8fb 100644
+--- a/include/net/sch_generic.h
++++ b/include/net/sch_generic.h
+@@ -61,6 +61,9 @@ struct Qdisc {
+ */
+ #define TCQ_F_WARN_NONWC (1 << 16)
+ #define TCQ_F_CPUSTATS 0x20 /* run using percpu statistics */
++#define TCQ_F_NOPARENT 0x40 /* root of its hierarchy :
++ * qdisc_tree_decrease_qlen() should stop.
++ */
+ u32 limit;
+ const struct Qdisc_ops *ops;
+ struct qdisc_size_table __rcu *stab;
+diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
+index 8a6616583f38..1c1b8ab34037 100644
+--- a/kernel/bpf/arraymap.c
++++ b/kernel/bpf/arraymap.c
+@@ -109,7 +109,7 @@ static int array_map_update_elem(struct bpf_map *map, void *key, void *value,
+ /* all elements already exist */
+ return -EEXIST;
+
+- memcpy(array->value + array->elem_size * index, value, array->elem_size);
++ memcpy(array->value + array->elem_size * index, value, map->value_size);
+ return 0;
+ }
+
+diff --git a/net/core/neighbour.c b/net/core/neighbour.c
+index 2237c1b3cdd2..d6e8cfcb6f7c 100644
+--- a/net/core/neighbour.c
++++ b/net/core/neighbour.c
+@@ -2207,7 +2207,7 @@ static int pneigh_fill_info(struct sk_buff *skb, struct pneigh_entry *pn,
+ ndm->ndm_pad2 = 0;
+ ndm->ndm_flags = pn->flags | NTF_PROXY;
+ ndm->ndm_type = RTN_UNICAST;
+- ndm->ndm_ifindex = pn->dev->ifindex;
++ ndm->ndm_ifindex = pn->dev ? pn->dev->ifindex : 0;
+ ndm->ndm_state = NUD_NONE;
+
+ if (nla_put(skb, NDA_DST, tbl->key_len, pn->key))
+@@ -2282,7 +2282,7 @@ static int pneigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb,
+ if (h > s_h)
+ s_idx = 0;
+ for (n = tbl->phash_buckets[h], idx = 0; n; n = n->next) {
+- if (dev_net(n->dev) != net)
++ if (pneigh_net(n) != net)
+ continue;
+ if (idx < s_idx)
+ goto next;
+diff --git a/net/core/scm.c b/net/core/scm.c
+index 3b6899b7d810..8a1741b14302 100644
+--- a/net/core/scm.c
++++ b/net/core/scm.c
+@@ -305,6 +305,8 @@ void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm)
+ err = put_user(cmlen, &cm->cmsg_len);
+ if (!err) {
+ cmlen = CMSG_SPACE(i*sizeof(int));
++ if (msg->msg_controllen < cmlen)
++ cmlen = msg->msg_controllen;
+ msg->msg_control += cmlen;
+ msg->msg_controllen -= cmlen;
+ }
+diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
+index 5165571f397a..a0490508d213 100644
+--- a/net/dccp/ipv6.c
++++ b/net/dccp/ipv6.c
+@@ -202,7 +202,9 @@ static int dccp_v6_send_response(struct sock *sk, struct request_sock *req)
+ security_req_classify_flow(req, flowi6_to_flowi(&fl6));
+
+
+- final_p = fl6_update_dst(&fl6, np->opt, &final);
++ rcu_read_lock();
++ final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt), &final);
++ rcu_read_unlock();
+
+ dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
+ if (IS_ERR(dst)) {
+@@ -219,7 +221,10 @@ static int dccp_v6_send_response(struct sock *sk, struct request_sock *req)
+ &ireq->ir_v6_loc_addr,
+ &ireq->ir_v6_rmt_addr);
+ fl6.daddr = ireq->ir_v6_rmt_addr;
+- err = ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
++ rcu_read_lock();
++ err = ip6_xmit(sk, skb, &fl6, rcu_dereference(np->opt),
++ np->tclass);
++ rcu_read_unlock();
+ err = net_xmit_eval(err);
+ }
+
+@@ -415,6 +420,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
+ {
+ struct inet_request_sock *ireq = inet_rsk(req);
+ struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
++ struct ipv6_txoptions *opt;
+ struct inet_sock *newinet;
+ struct dccp6_sock *newdp6;
+ struct sock *newsk;
+@@ -534,13 +540,15 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
+ * Yes, keeping reference count would be much more clever, but we make
+ * one more one thing there: reattach optmem to newsk.
+ */
+- if (np->opt != NULL)
+- newnp->opt = ipv6_dup_options(newsk, np->opt);
+-
++ opt = rcu_dereference(np->opt);
++ if (opt) {
++ opt = ipv6_dup_options(newsk, opt);
++ RCU_INIT_POINTER(newnp->opt, opt);
++ }
+ inet_csk(newsk)->icsk_ext_hdr_len = 0;
+- if (newnp->opt != NULL)
+- inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
+- newnp->opt->opt_flen);
++ if (opt)
++ inet_csk(newsk)->icsk_ext_hdr_len = opt->opt_nflen +
++ opt->opt_flen;
+
+ dccp_sync_mss(newsk, dst_mtu(dst));
+
+@@ -793,6 +801,7 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ struct dccp_sock *dp = dccp_sk(sk);
+ struct in6_addr *saddr = NULL, *final_p, final;
++ struct ipv6_txoptions *opt;
+ struct flowi6 fl6;
+ struct dst_entry *dst;
+ int addr_type;
+@@ -892,7 +901,8 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
+ fl6.fl6_sport = inet->inet_sport;
+ security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
+
+- final_p = fl6_update_dst(&fl6, np->opt, &final);
++ opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
++ final_p = fl6_update_dst(&fl6, opt, &final);
+
+ dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
+ if (IS_ERR(dst)) {
+@@ -912,9 +922,8 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
+ __ip6_dst_store(sk, dst, NULL, NULL);
+
+ icsk->icsk_ext_hdr_len = 0;
+- if (np->opt != NULL)
+- icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
+- np->opt->opt_nflen);
++ if (opt)
++ icsk->icsk_ext_hdr_len = opt->opt_flen + opt->opt_nflen;
+
+ inet->inet_dport = usin->sin6_port;
+
+diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
+index df28693f32e1..c3bfebd501ed 100644
+--- a/net/ipv4/ipmr.c
++++ b/net/ipv4/ipmr.c
+@@ -134,7 +134,7 @@ static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
+ struct mfc_cache *c, struct rtmsg *rtm);
+ static void mroute_netlink_event(struct mr_table *mrt, struct mfc_cache *mfc,
+ int cmd);
+-static void mroute_clean_tables(struct mr_table *mrt);
++static void mroute_clean_tables(struct mr_table *mrt, bool all);
+ static void ipmr_expire_process(unsigned long arg);
+
+ #ifdef CONFIG_IP_MROUTE_MULTIPLE_TABLES
+@@ -351,7 +351,7 @@ static struct mr_table *ipmr_new_table(struct net *net, u32 id)
+ static void ipmr_free_table(struct mr_table *mrt)
+ {
+ del_timer_sync(&mrt->ipmr_expire_timer);
+- mroute_clean_tables(mrt);
++ mroute_clean_tables(mrt, true);
+ kfree(mrt);
+ }
+
+@@ -1209,7 +1209,7 @@ static int ipmr_mfc_add(struct net *net, struct mr_table *mrt,
+ * Close the multicast socket, and clear the vif tables etc
+ */
+
+-static void mroute_clean_tables(struct mr_table *mrt)
++static void mroute_clean_tables(struct mr_table *mrt, bool all)
+ {
+ int i;
+ LIST_HEAD(list);
+@@ -1218,8 +1218,9 @@ static void mroute_clean_tables(struct mr_table *mrt)
+ /* Shut down all active vif entries */
+
+ for (i = 0; i < mrt->maxvif; i++) {
+- if (!(mrt->vif_table[i].flags & VIFF_STATIC))
+- vif_delete(mrt, i, 0, &list);
++ if (!all && (mrt->vif_table[i].flags & VIFF_STATIC))
++ continue;
++ vif_delete(mrt, i, 0, &list);
+ }
+ unregister_netdevice_many(&list);
+
+@@ -1227,7 +1228,7 @@ static void mroute_clean_tables(struct mr_table *mrt)
+
+ for (i = 0; i < MFC_LINES; i++) {
+ list_for_each_entry_safe(c, next, &mrt->mfc_cache_array[i], list) {
+- if (c->mfc_flags & MFC_STATIC)
++ if (!all && (c->mfc_flags & MFC_STATIC))
+ continue;
+ list_del_rcu(&c->list);
+ mroute_netlink_event(mrt, c, RTM_DELROUTE);
+@@ -1262,7 +1263,7 @@ static void mrtsock_destruct(struct sock *sk)
+ NETCONFA_IFINDEX_ALL,
+ net->ipv4.devconf_all);
+ RCU_INIT_POINTER(mrt->mroute_sk, NULL);
+- mroute_clean_tables(mrt);
++ mroute_clean_tables(mrt, false);
+ }
+ }
+ rtnl_unlock();
+diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
+index c9ab964189a0..87463c814896 100644
+--- a/net/ipv4/tcp_input.c
++++ b/net/ipv4/tcp_input.c
+@@ -4438,19 +4438,34 @@ static int __must_check tcp_queue_rcv(struct sock *sk, struct sk_buff *skb, int
+ int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size)
+ {
+ struct sk_buff *skb;
++ int err = -ENOMEM;
++ int data_len = 0;
+ bool fragstolen;
+
+ if (size == 0)
+ return 0;
+
+- skb = alloc_skb(size, sk->sk_allocation);
++ if (size > PAGE_SIZE) {
++ int npages = min_t(size_t, size >> PAGE_SHIFT, MAX_SKB_FRAGS);
++
++ data_len = npages << PAGE_SHIFT;
++ size = data_len + (size & ~PAGE_MASK);
++ }
++ skb = alloc_skb_with_frags(size - data_len, data_len,
++ PAGE_ALLOC_COSTLY_ORDER,
++ &err, sk->sk_allocation);
+ if (!skb)
+ goto err;
+
++ skb_put(skb, size - data_len);
++ skb->data_len = data_len;
++ skb->len = size;
++
+ if (tcp_try_rmem_schedule(sk, skb, skb->truesize))
+ goto err_free;
+
+- if (memcpy_from_msg(skb_put(skb, size), msg, size))
++ err = skb_copy_datagram_from_iter(skb, 0, &msg->msg_iter, size);
++ if (err)
+ goto err_free;
+
+ TCP_SKB_CB(skb)->seq = tcp_sk(sk)->rcv_nxt;
+@@ -4466,7 +4481,8 @@ int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size)
+ err_free:
+ kfree_skb(skb);
+ err:
+- return -ENOMEM;
++ return err;
++
+ }
+
+ static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
+@@ -5622,6 +5638,7 @@ discard:
+ }
+
+ tp->rcv_nxt = TCP_SKB_CB(skb)->seq + 1;
++ tp->copied_seq = tp->rcv_nxt;
+ tp->rcv_wup = TCP_SKB_CB(skb)->seq + 1;
+
+ /* RFC1323: The window in SYN & SYN/ACK segments is
+diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
+index 441ca6f38981..88203e755af8 100644
+--- a/net/ipv4/tcp_ipv4.c
++++ b/net/ipv4/tcp_ipv4.c
+@@ -922,7 +922,8 @@ int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr,
+ }
+
+ md5sig = rcu_dereference_protected(tp->md5sig_info,
+- sock_owned_by_user(sk));
++ sock_owned_by_user(sk) ||
++ lockdep_is_held(&sk->sk_lock.slock));
+ if (!md5sig) {
+ md5sig = kmalloc(sizeof(*md5sig), gfp);
+ if (!md5sig)
+diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
+index 8c65dc147d8b..c8f97858d6f6 100644
+--- a/net/ipv4/tcp_timer.c
++++ b/net/ipv4/tcp_timer.c
+@@ -176,6 +176,18 @@ static int tcp_write_timeout(struct sock *sk)
+ syn_set = true;
+ } else {
+ if (retransmits_timed_out(sk, sysctl_tcp_retries1, 0, 0)) {
++ /* Some middle-boxes may black-hole Fast Open _after_
++ * the handshake. Therefore we conservatively disable
++ * Fast Open on this path on recurring timeouts with
++ * few or zero bytes acked after Fast Open.
++ */
++ if (tp->syn_data_acked &&
++ tp->bytes_acked <= tp->rx_opt.mss_clamp) {
++ tcp_fastopen_cache_set(sk, 0, NULL, true, 0);
++ if (icsk->icsk_retransmits == sysctl_tcp_retries1)
++ NET_INC_STATS_BH(sock_net(sk),
++ LINUX_MIB_TCPFASTOPENACTIVEFAIL);
++ }
+ /* Black hole detection */
+ tcp_mtu_probing(icsk, sk);
+
+diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
+index eef63b394c5a..2d044d2a2ccf 100644
+--- a/net/ipv6/af_inet6.c
++++ b/net/ipv6/af_inet6.c
+@@ -425,9 +425,11 @@ void inet6_destroy_sock(struct sock *sk)
+
+ /* Free tx options */
+
+- opt = xchg(&np->opt, NULL);
+- if (opt)
+- sock_kfree_s(sk, opt, opt->tot_len);
++ opt = xchg((__force struct ipv6_txoptions **)&np->opt, NULL);
++ if (opt) {
++ atomic_sub(opt->tot_len, &sk->sk_omem_alloc);
++ txopt_put(opt);
++ }
+ }
+ EXPORT_SYMBOL_GPL(inet6_destroy_sock);
+
+@@ -656,7 +658,10 @@ int inet6_sk_rebuild_header(struct sock *sk)
+ fl6.fl6_sport = inet->inet_sport;
+ security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
+
+- final_p = fl6_update_dst(&fl6, np->opt, &final);
++ rcu_read_lock();
++ final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt),
++ &final);
++ rcu_read_unlock();
+
+ dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
+ if (IS_ERR(dst)) {
+diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
+index b10a88986a98..13ca4cf5616f 100644
+--- a/net/ipv6/datagram.c
++++ b/net/ipv6/datagram.c
+@@ -167,8 +167,10 @@ ipv4_connected:
+
+ security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
+
+- opt = flowlabel ? flowlabel->opt : np->opt;
++ rcu_read_lock();
++ opt = flowlabel ? flowlabel->opt : rcu_dereference(np->opt);
+ final_p = fl6_update_dst(&fl6, opt, &final);
++ rcu_read_unlock();
+
+ dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
+ err = 0;
+diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
+index a7bbbe45570b..adbd6958c398 100644
+--- a/net/ipv6/exthdrs.c
++++ b/net/ipv6/exthdrs.c
+@@ -727,6 +727,7 @@ ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt)
+ *((char **)&opt2->dst1opt) += dif;
+ if (opt2->srcrt)
+ *((char **)&opt2->srcrt) += dif;
++ atomic_set(&opt2->refcnt, 1);
+ }
+ return opt2;
+ }
+@@ -790,7 +791,7 @@ ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
+ return ERR_PTR(-ENOBUFS);
+
+ memset(opt2, 0, tot_len);
+-
++ atomic_set(&opt2->refcnt, 1);
+ opt2->tot_len = tot_len;
+ p = (char *)(opt2 + 1);
+
+diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
+index 6927f3fb5597..9beed302eb36 100644
+--- a/net/ipv6/inet6_connection_sock.c
++++ b/net/ipv6/inet6_connection_sock.c
+@@ -77,7 +77,9 @@ struct dst_entry *inet6_csk_route_req(struct sock *sk,
+ memset(fl6, 0, sizeof(*fl6));
+ fl6->flowi6_proto = IPPROTO_TCP;
+ fl6->daddr = ireq->ir_v6_rmt_addr;
+- final_p = fl6_update_dst(fl6, np->opt, &final);
++ rcu_read_lock();
++ final_p = fl6_update_dst(fl6, rcu_dereference(np->opt), &final);
++ rcu_read_unlock();
+ fl6->saddr = ireq->ir_v6_loc_addr;
+ fl6->flowi6_oif = ireq->ir_iif;
+ fl6->flowi6_mark = ireq->ir_mark;
+@@ -207,7 +209,9 @@ static struct dst_entry *inet6_csk_route_socket(struct sock *sk,
+ fl6->fl6_dport = inet->inet_dport;
+ security_sk_classify_flow(sk, flowi6_to_flowi(fl6));
+
+- final_p = fl6_update_dst(fl6, np->opt, &final);
++ rcu_read_lock();
++ final_p = fl6_update_dst(fl6, rcu_dereference(np->opt), &final);
++ rcu_read_unlock();
+
+ dst = __inet6_csk_dst_check(sk, np->dst_cookie);
+ if (!dst) {
+@@ -240,7 +244,8 @@ int inet6_csk_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl_unused
+ /* Restore final destination back after routing done */
+ fl6.daddr = sk->sk_v6_daddr;
+
+- res = ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
++ res = ip6_xmit(sk, skb, &fl6, rcu_dereference(np->opt),
++ np->tclass);
+ rcu_read_unlock();
+ return res;
+ }
+diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
+index 5f36266b1f5e..a7aef4b52d65 100644
+--- a/net/ipv6/ip6mr.c
++++ b/net/ipv6/ip6mr.c
+@@ -118,7 +118,7 @@ static void mr6_netlink_event(struct mr6_table *mrt, struct mfc6_cache *mfc,
+ int cmd);
+ static int ip6mr_rtm_dumproute(struct sk_buff *skb,
+ struct netlink_callback *cb);
+-static void mroute_clean_tables(struct mr6_table *mrt);
++static void mroute_clean_tables(struct mr6_table *mrt, bool all);
+ static void ipmr_expire_process(unsigned long arg);
+
+ #ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
+@@ -335,7 +335,7 @@ static struct mr6_table *ip6mr_new_table(struct net *net, u32 id)
+ static void ip6mr_free_table(struct mr6_table *mrt)
+ {
+ del_timer_sync(&mrt->ipmr_expire_timer);
+- mroute_clean_tables(mrt);
++ mroute_clean_tables(mrt, true);
+ kfree(mrt);
+ }
+
+@@ -1543,7 +1543,7 @@ static int ip6mr_mfc_add(struct net *net, struct mr6_table *mrt,
+ * Close the multicast socket, and clear the vif tables etc
+ */
+
+-static void mroute_clean_tables(struct mr6_table *mrt)
++static void mroute_clean_tables(struct mr6_table *mrt, bool all)
+ {
+ int i;
+ LIST_HEAD(list);
+@@ -1553,8 +1553,9 @@ static void mroute_clean_tables(struct mr6_table *mrt)
+ * Shut down all active vif entries
+ */
+ for (i = 0; i < mrt->maxvif; i++) {
+- if (!(mrt->vif6_table[i].flags & VIFF_STATIC))
+- mif6_delete(mrt, i, &list);
++ if (!all && (mrt->vif6_table[i].flags & VIFF_STATIC))
++ continue;
++ mif6_delete(mrt, i, &list);
+ }
+ unregister_netdevice_many(&list);
+
+@@ -1563,7 +1564,7 @@ static void mroute_clean_tables(struct mr6_table *mrt)
+ */
+ for (i = 0; i < MFC6_LINES; i++) {
+ list_for_each_entry_safe(c, next, &mrt->mfc6_cache_array[i], list) {
+- if (c->mfc_flags & MFC_STATIC)
++ if (!all && (c->mfc_flags & MFC_STATIC))
+ continue;
+ write_lock_bh(&mrt_lock);
+ list_del(&c->list);
+@@ -1626,7 +1627,7 @@ int ip6mr_sk_done(struct sock *sk)
+ net->ipv6.devconf_all);
+ write_unlock_bh(&mrt_lock);
+
+- mroute_clean_tables(mrt);
++ mroute_clean_tables(mrt, false);
+ err = 0;
+ break;
+ }
+diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
+index 63e6956917c9..4449ad1f8114 100644
+--- a/net/ipv6/ipv6_sockglue.c
++++ b/net/ipv6/ipv6_sockglue.c
+@@ -111,7 +111,8 @@ struct ipv6_txoptions *ipv6_update_options(struct sock *sk,
+ icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
+ }
+ }
+- opt = xchg(&inet6_sk(sk)->opt, opt);
++ opt = xchg((__force struct ipv6_txoptions **)&inet6_sk(sk)->opt,
++ opt);
+ sk_dst_reset(sk);
+
+ return opt;
+@@ -231,9 +232,12 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
+ sk->sk_socket->ops = &inet_dgram_ops;
+ sk->sk_family = PF_INET;
+ }
+- opt = xchg(&np->opt, NULL);
+- if (opt)
+- sock_kfree_s(sk, opt, opt->tot_len);
++ opt = xchg((__force struct ipv6_txoptions **)&np->opt,
++ NULL);
++ if (opt) {
++ atomic_sub(opt->tot_len, &sk->sk_omem_alloc);
++ txopt_put(opt);
++ }
+ pktopt = xchg(&np->pktoptions, NULL);
+ kfree_skb(pktopt);
+
+@@ -403,7 +407,8 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
+ if (optname != IPV6_RTHDR && !ns_capable(net->user_ns, CAP_NET_RAW))
+ break;
+
+- opt = ipv6_renew_options(sk, np->opt, optname,
++ opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
++ opt = ipv6_renew_options(sk, opt, optname,
+ (struct ipv6_opt_hdr __user *)optval,
+ optlen);
+ if (IS_ERR(opt)) {
+@@ -432,8 +437,10 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
+ retv = 0;
+ opt = ipv6_update_options(sk, opt);
+ sticky_done:
+- if (opt)
+- sock_kfree_s(sk, opt, opt->tot_len);
++ if (opt) {
++ atomic_sub(opt->tot_len, &sk->sk_omem_alloc);
++ txopt_put(opt);
++ }
+ break;
+ }
+
+@@ -486,6 +493,7 @@ sticky_done:
+ break;
+
+ memset(opt, 0, sizeof(*opt));
++ atomic_set(&opt->refcnt, 1);
+ opt->tot_len = sizeof(*opt) + optlen;
+ retv = -EFAULT;
+ if (copy_from_user(opt+1, optval, optlen))
+@@ -502,8 +510,10 @@ update:
+ retv = 0;
+ opt = ipv6_update_options(sk, opt);
+ done:
+- if (opt)
+- sock_kfree_s(sk, opt, opt->tot_len);
++ if (opt) {
++ atomic_sub(opt->tot_len, &sk->sk_omem_alloc);
++ txopt_put(opt);
++ }
+ break;
+ }
+ case IPV6_UNICAST_HOPS:
+@@ -1110,10 +1120,11 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
+ case IPV6_RTHDR:
+ case IPV6_DSTOPTS:
+ {
++ struct ipv6_txoptions *opt;
+
+ lock_sock(sk);
+- len = ipv6_getsockopt_sticky(sk, np->opt,
+- optname, optval, len);
++ opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
++ len = ipv6_getsockopt_sticky(sk, opt, optname, optval, len);
+ release_sock(sk);
+ /* check if ipv6_getsockopt_sticky() returns err code */
+ if (len < 0)
+diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
+index 083b2927fc67..41e3b5ee8d0b 100644
+--- a/net/ipv6/mcast.c
++++ b/net/ipv6/mcast.c
+@@ -1651,7 +1651,6 @@ out:
+ if (!err) {
+ ICMP6MSGOUT_INC_STATS(net, idev, ICMPV6_MLD2_REPORT);
+ ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
+- IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUTMCAST, payload_len);
+ } else {
+ IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
+ }
+@@ -2014,7 +2013,6 @@ out:
+ if (!err) {
+ ICMP6MSGOUT_INC_STATS(net, idev, type);
+ ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
+- IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUTMCAST, full_len);
+ } else
+ IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
+
+diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
+index 6f187c8d8a1b..d235ed7f47ab 100644
+--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
++++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
+@@ -190,7 +190,7 @@ static void nf_ct_frag6_expire(unsigned long data)
+ /* Creation primitives. */
+ static inline struct frag_queue *fq_find(struct net *net, __be32 id,
+ u32 user, struct in6_addr *src,
+- struct in6_addr *dst, u8 ecn)
++ struct in6_addr *dst, int iif, u8 ecn)
+ {
+ struct inet_frag_queue *q;
+ struct ip6_create_arg arg;
+@@ -200,6 +200,7 @@ static inline struct frag_queue *fq_find(struct net *net, __be32 id,
+ arg.user = user;
+ arg.src = src;
+ arg.dst = dst;
++ arg.iif = iif;
+ arg.ecn = ecn;
+
+ local_bh_disable();
+@@ -603,7 +604,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user)
+ fhdr = (struct frag_hdr *)skb_transport_header(clone);
+
+ fq = fq_find(net, fhdr->identification, user, &hdr->saddr, &hdr->daddr,
+- ip6_frag_ecn(hdr));
++ skb->dev ? skb->dev->ifindex : 0, ip6_frag_ecn(hdr));
+ if (fq == NULL) {
+ pr_debug("Can't find and can't create new queue\n");
+ goto ret_orig;
+diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
+index 8072bd4139b7..2c639aee12cb 100644
+--- a/net/ipv6/raw.c
++++ b/net/ipv6/raw.c
+@@ -731,6 +731,7 @@ static int raw6_getfrag(void *from, char *to, int offset, int len, int odd,
+
+ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ {
++ struct ipv6_txoptions *opt_to_free = NULL;
+ struct ipv6_txoptions opt_space;
+ DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
+ struct in6_addr *daddr, *final_p, final;
+@@ -837,8 +838,10 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ if (!(opt->opt_nflen|opt->opt_flen))
+ opt = NULL;
+ }
+- if (!opt)
+- opt = np->opt;
++ if (!opt) {
++ opt = txopt_get(np);
++ opt_to_free = opt;
++ }
+ if (flowlabel)
+ opt = fl6_merge_options(&opt_space, flowlabel, opt);
+ opt = ipv6_fixup_options(&opt_space, opt);
+@@ -901,6 +904,7 @@ done:
+ dst_release(dst);
+ out:
+ fl6_sock_release(flowlabel);
++ txopt_put(opt_to_free);
+ return err < 0 ? err : len;
+ do_confirm:
+ dst_confirm(dst);
+diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
+index 8ffa2c8cce77..9d1f6a28b284 100644
+--- a/net/ipv6/reassembly.c
++++ b/net/ipv6/reassembly.c
+@@ -108,7 +108,10 @@ bool ip6_frag_match(const struct inet_frag_queue *q, const void *a)
+ return fq->id == arg->id &&
+ fq->user == arg->user &&
+ ipv6_addr_equal(&fq->saddr, arg->src) &&
+- ipv6_addr_equal(&fq->daddr, arg->dst);
++ ipv6_addr_equal(&fq->daddr, arg->dst) &&
++ (arg->iif == fq->iif ||
++ !(ipv6_addr_type(arg->dst) & (IPV6_ADDR_MULTICAST |
++ IPV6_ADDR_LINKLOCAL)));
+ }
+ EXPORT_SYMBOL(ip6_frag_match);
+
+@@ -180,7 +183,7 @@ static void ip6_frag_expire(unsigned long data)
+
+ static struct frag_queue *
+ fq_find(struct net *net, __be32 id, const struct in6_addr *src,
+- const struct in6_addr *dst, u8 ecn)
++ const struct in6_addr *dst, int iif, u8 ecn)
+ {
+ struct inet_frag_queue *q;
+ struct ip6_create_arg arg;
+@@ -190,6 +193,7 @@ fq_find(struct net *net, __be32 id, const struct in6_addr *src,
+ arg.user = IP6_DEFRAG_LOCAL_DELIVER;
+ arg.src = src;
+ arg.dst = dst;
++ arg.iif = iif;
+ arg.ecn = ecn;
+
+ hash = inet6_hash_frag(id, src, dst);
+@@ -551,7 +555,7 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
+ }
+
+ fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr,
+- ip6_frag_ecn(hdr));
++ skb->dev ? skb->dev->ifindex : 0, ip6_frag_ecn(hdr));
+ if (fq) {
+ int ret;
+
+diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
+index 21bc2eb53c57..a4cf004f44d0 100644
+--- a/net/ipv6/syncookies.c
++++ b/net/ipv6/syncookies.c
+@@ -242,7 +242,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
+ memset(&fl6, 0, sizeof(fl6));
+ fl6.flowi6_proto = IPPROTO_TCP;
+ fl6.daddr = ireq->ir_v6_rmt_addr;
+- final_p = fl6_update_dst(&fl6, np->opt, &final);
++ final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt), &final);
+ fl6.saddr = ireq->ir_v6_loc_addr;
+ fl6.flowi6_oif = sk->sk_bound_dev_if;
+ fl6.flowi6_mark = ireq->ir_mark;
+diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
+index e541d68dba8b..cfb27f56c62f 100644
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -121,6 +121,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ struct tcp_sock *tp = tcp_sk(sk);
+ struct in6_addr *saddr = NULL, *final_p, final;
++ struct ipv6_txoptions *opt;
+ struct rt6_info *rt;
+ struct flowi6 fl6;
+ struct dst_entry *dst;
+@@ -237,7 +238,8 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
+ fl6.fl6_dport = usin->sin6_port;
+ fl6.fl6_sport = inet->inet_sport;
+
+- final_p = fl6_update_dst(&fl6, np->opt, &final);
++ opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
++ final_p = fl6_update_dst(&fl6, opt, &final);
+
+ security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
+
+@@ -266,9 +268,9 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
+ tcp_fetch_timewait_stamp(sk, dst);
+
+ icsk->icsk_ext_hdr_len = 0;
+- if (np->opt)
+- icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
+- np->opt->opt_nflen);
++ if (opt)
++ icsk->icsk_ext_hdr_len = opt->opt_flen +
++ opt->opt_nflen;
+
+ tp->rx_opt.mss_clamp = IPV6_MIN_MTU - sizeof(struct tcphdr) - sizeof(struct ipv6hdr);
+
+@@ -464,7 +466,8 @@ static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst,
+ fl6->flowlabel = ip6_flowlabel(ipv6_hdr(ireq->pktopts));
+
+ skb_set_queue_mapping(skb, queue_mapping);
+- err = ip6_xmit(sk, skb, fl6, np->opt, np->tclass);
++ err = ip6_xmit(sk, skb, fl6, rcu_dereference(np->opt),
++ np->tclass);
+ err = net_xmit_eval(err);
+ }
+
+@@ -994,6 +997,7 @@ static struct sock *tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
+ struct inet_request_sock *ireq;
+ struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
+ struct tcp6_sock *newtcp6sk;
++ struct ipv6_txoptions *opt;
+ struct inet_sock *newinet;
+ struct tcp_sock *newtp;
+ struct sock *newsk;
+@@ -1129,13 +1133,15 @@ static struct sock *tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
+ but we make one more one thing there: reattach optmem
+ to newsk.
+ */
+- if (np->opt)
+- newnp->opt = ipv6_dup_options(newsk, np->opt);
+-
++ opt = rcu_dereference(np->opt);
++ if (opt) {
++ opt = ipv6_dup_options(newsk, opt);
++ RCU_INIT_POINTER(newnp->opt, opt);
++ }
+ inet_csk(newsk)->icsk_ext_hdr_len = 0;
+- if (newnp->opt)
+- inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
+- newnp->opt->opt_flen);
++ if (opt)
++ inet_csk(newsk)->icsk_ext_hdr_len = opt->opt_nflen +
++ opt->opt_flen;
+
+ tcp_ca_openreq_child(newsk, dst);
+
+diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
+index e51fc3eee6db..7333f3575fc5 100644
+--- a/net/ipv6/udp.c
++++ b/net/ipv6/udp.c
+@@ -1107,6 +1107,7 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, msg->msg_name);
+ struct in6_addr *daddr, *final_p, final;
+ struct ipv6_txoptions *opt = NULL;
++ struct ipv6_txoptions *opt_to_free = NULL;
+ struct ip6_flowlabel *flowlabel = NULL;
+ struct flowi6 fl6;
+ struct dst_entry *dst;
+@@ -1260,8 +1261,10 @@ do_udp_sendmsg:
+ opt = NULL;
+ connected = 0;
+ }
+- if (!opt)
+- opt = np->opt;
++ if (!opt) {
++ opt = txopt_get(np);
++ opt_to_free = opt;
++ }
+ if (flowlabel)
+ opt = fl6_merge_options(&opt_space, flowlabel, opt);
+ opt = ipv6_fixup_options(&opt_space, opt);
+@@ -1370,6 +1373,7 @@ release_dst:
+ out:
+ dst_release(dst);
+ fl6_sock_release(flowlabel);
++ txopt_put(opt_to_free);
+ if (!err)
+ return len;
+ /*
+diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
+index d1ded3777815..0ce9da948ad7 100644
+--- a/net/l2tp/l2tp_ip6.c
++++ b/net/l2tp/l2tp_ip6.c
+@@ -486,6 +486,7 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ DECLARE_SOCKADDR(struct sockaddr_l2tpip6 *, lsa, msg->msg_name);
+ struct in6_addr *daddr, *final_p, final;
+ struct ipv6_pinfo *np = inet6_sk(sk);
++ struct ipv6_txoptions *opt_to_free = NULL;
+ struct ipv6_txoptions *opt = NULL;
+ struct ip6_flowlabel *flowlabel = NULL;
+ struct dst_entry *dst = NULL;
+@@ -575,8 +576,10 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
+ opt = NULL;
+ }
+
+- if (opt == NULL)
+- opt = np->opt;
++ if (!opt) {
++ opt = txopt_get(np);
++ opt_to_free = opt;
++ }
+ if (flowlabel)
+ opt = fl6_merge_options(&opt_space, flowlabel, opt);
+ opt = ipv6_fixup_options(&opt_space, opt);
+@@ -631,6 +634,7 @@ done:
+ dst_release(dst);
+ out:
+ fl6_sock_release(flowlabel);
++ txopt_put(opt_to_free);
+
+ return err < 0 ? err : len;
+
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index 686e60187401..ebc39e66d704 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -1524,6 +1524,20 @@ static void fanout_release(struct sock *sk)
+ mutex_unlock(&fanout_mutex);
+ }
+
++static bool packet_extra_vlan_len_allowed(const struct net_device *dev,
++ struct sk_buff *skb)
++{
++ /* Earlier code assumed this would be a VLAN pkt, double-check
++ * this now that we have the actual packet in hand. We can only
++ * do this check on Ethernet devices.
++ */
++ if (unlikely(dev->type != ARPHRD_ETHER))
++ return false;
++
++ skb_reset_mac_header(skb);
++ return likely(eth_hdr(skb)->h_proto == htons(ETH_P_8021Q));
++}
++
+ static const struct proto_ops packet_ops;
+
+ static const struct proto_ops packet_ops_spkt;
+@@ -1685,18 +1699,10 @@ retry:
+ goto retry;
+ }
+
+- if (len > (dev->mtu + dev->hard_header_len + extra_len)) {
+- /* Earlier code assumed this would be a VLAN pkt,
+- * double-check this now that we have the actual
+- * packet in hand.
+- */
+- struct ethhdr *ehdr;
+- skb_reset_mac_header(skb);
+- ehdr = eth_hdr(skb);
+- if (ehdr->h_proto != htons(ETH_P_8021Q)) {
+- err = -EMSGSIZE;
+- goto out_unlock;
+- }
++ if (len > (dev->mtu + dev->hard_header_len + extra_len) &&
++ !packet_extra_vlan_len_allowed(dev, skb)) {
++ err = -EMSGSIZE;
++ goto out_unlock;
+ }
+
+ skb->protocol = proto;
+@@ -2115,6 +2121,15 @@ static bool ll_header_truncated(const struct net_device *dev, int len)
+ return false;
+ }
+
++static void tpacket_set_protocol(const struct net_device *dev,
++ struct sk_buff *skb)
++{
++ if (dev->type == ARPHRD_ETHER) {
++ skb_reset_mac_header(skb);
++ skb->protocol = eth_hdr(skb)->h_proto;
++ }
++}
++
+ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
+ void *frame, struct net_device *dev, int size_max,
+ __be16 proto, unsigned char *addr, int hlen)
+@@ -2151,8 +2166,6 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
+ skb_reserve(skb, hlen);
+ skb_reset_network_header(skb);
+
+- if (!packet_use_direct_xmit(po))
+- skb_probe_transport_header(skb, 0);
+ if (unlikely(po->tp_tx_has_off)) {
+ int off_min, off_max, off;
+ off_min = po->tp_hdrlen - sizeof(struct sockaddr_ll);
+@@ -2198,6 +2211,8 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
+ dev->hard_header_len);
+ if (unlikely(err))
+ return err;
++ if (!skb->protocol)
++ tpacket_set_protocol(dev, skb);
+
+ data += dev->hard_header_len;
+ to_write -= dev->hard_header_len;
+@@ -2232,6 +2247,8 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
+ len = ((to_write > len_max) ? len_max : to_write);
+ }
+
++ skb_probe_transport_header(skb, 0);
++
+ return tp_len;
+ }
+
+@@ -2276,12 +2293,13 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
+ if (unlikely(!(dev->flags & IFF_UP)))
+ goto out_put;
+
+- reserve = dev->hard_header_len + VLAN_HLEN;
++ if (po->sk.sk_socket->type == SOCK_RAW)
++ reserve = dev->hard_header_len;
+ size_max = po->tx_ring.frame_size
+ - (po->tp_hdrlen - sizeof(struct sockaddr_ll));
+
+- if (size_max > dev->mtu + reserve)
+- size_max = dev->mtu + reserve;
++ if (size_max > dev->mtu + reserve + VLAN_HLEN)
++ size_max = dev->mtu + reserve + VLAN_HLEN;
+
+ do {
+ ph = packet_current_frame(po, &po->tx_ring,
+@@ -2308,18 +2326,10 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
+ tp_len = tpacket_fill_skb(po, skb, ph, dev, size_max, proto,
+ addr, hlen);
+ if (likely(tp_len >= 0) &&
+- tp_len > dev->mtu + dev->hard_header_len) {
+- struct ethhdr *ehdr;
+- /* Earlier code assumed this would be a VLAN pkt,
+- * double-check this now that we have the actual
+- * packet in hand.
+- */
++ tp_len > dev->mtu + reserve &&
++ !packet_extra_vlan_len_allowed(dev, skb))
++ tp_len = -EMSGSIZE;
+
+- skb_reset_mac_header(skb);
+- ehdr = eth_hdr(skb);
+- if (ehdr->h_proto != htons(ETH_P_8021Q))
+- tp_len = -EMSGSIZE;
+- }
+ if (unlikely(tp_len < 0)) {
+ if (po->tp_loss) {
+ __packet_set_status(po, ph,
+@@ -2540,18 +2550,10 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
+
+ sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
+
+- if (!gso_type && (len > dev->mtu + reserve + extra_len)) {
+- /* Earlier code assumed this would be a VLAN pkt,
+- * double-check this now that we have the actual
+- * packet in hand.
+- */
+- struct ethhdr *ehdr;
+- skb_reset_mac_header(skb);
+- ehdr = eth_hdr(skb);
+- if (ehdr->h_proto != htons(ETH_P_8021Q)) {
+- err = -EMSGSIZE;
+- goto out_free;
+- }
++ if (!gso_type && (len > dev->mtu + reserve + extra_len) &&
++ !packet_extra_vlan_len_allowed(dev, skb)) {
++ err = -EMSGSIZE;
++ goto out_free;
+ }
+
+ skb->protocol = proto;
+@@ -2582,8 +2584,8 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
+ len += vnet_hdr_len;
+ }
+
+- if (!packet_use_direct_xmit(po))
+- skb_probe_transport_header(skb, reserve);
++ skb_probe_transport_header(skb, reserve);
++
+ if (unlikely(extra_len == 4))
+ skb->no_fcs = 1;
+
+diff --git a/net/rds/connection.c b/net/rds/connection.c
+index 9d66705f9d41..da6da57e5f36 100644
+--- a/net/rds/connection.c
++++ b/net/rds/connection.c
+@@ -187,12 +187,6 @@ new_conn:
+ }
+ }
+
+- if (trans == NULL) {
+- kmem_cache_free(rds_conn_slab, conn);
+- conn = ERR_PTR(-ENODEV);
+- goto out;
+- }
+-
+ conn->c_trans = trans;
+
+ ret = trans->conn_alloc(conn, gfp);
+diff --git a/net/rds/send.c b/net/rds/send.c
+index e9430f537f9c..7b30c0f3180d 100644
+--- a/net/rds/send.c
++++ b/net/rds/send.c
+@@ -986,11 +986,13 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
+ release_sock(sk);
+ }
+
+- /* racing with another thread binding seems ok here */
++ lock_sock(sk);
+ if (daddr == 0 || rs->rs_bound_addr == 0) {
++ release_sock(sk);
+ ret = -ENOTCONN; /* XXX not a great errno */
+ goto out;
+ }
++ release_sock(sk);
+
+ /* size of rm including all sgs */
+ ret = rds_rm_size(msg, payload_len);
+diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
+index 1e1c89e51a11..d4b6f3682c14 100644
+--- a/net/sched/sch_api.c
++++ b/net/sched/sch_api.c
+@@ -253,7 +253,8 @@ int qdisc_set_default(const char *name)
+ }
+
+ /* We know handle. Find qdisc among all qdisc's attached to device
+- (root qdisc, all its children, children of children etc.)
++ * (root qdisc, all its children, children of children etc.)
++ * Note: caller either uses rtnl or rcu_read_lock()
+ */
+
+ static struct Qdisc *qdisc_match_from_root(struct Qdisc *root, u32 handle)
+@@ -264,7 +265,7 @@ static struct Qdisc *qdisc_match_from_root(struct Qdisc *root, u32 handle)
+ root->handle == handle)
+ return root;
+
+- list_for_each_entry(q, &root->list, list) {
++ list_for_each_entry_rcu(q, &root->list, list) {
+ if (q->handle == handle)
+ return q;
+ }
+@@ -277,15 +278,18 @@ void qdisc_list_add(struct Qdisc *q)
+ struct Qdisc *root = qdisc_dev(q)->qdisc;
+
+ WARN_ON_ONCE(root == &noop_qdisc);
+- list_add_tail(&q->list, &root->list);
++ ASSERT_RTNL();
++ list_add_tail_rcu(&q->list, &root->list);
+ }
+ }
+ EXPORT_SYMBOL(qdisc_list_add);
+
+ void qdisc_list_del(struct Qdisc *q)
+ {
+- if ((q->parent != TC_H_ROOT) && !(q->flags & TCQ_F_INGRESS))
+- list_del(&q->list);
++ if ((q->parent != TC_H_ROOT) && !(q->flags & TCQ_F_INGRESS)) {
++ ASSERT_RTNL();
++ list_del_rcu(&q->list);
++ }
+ }
+ EXPORT_SYMBOL(qdisc_list_del);
+
+@@ -750,14 +754,18 @@ void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
+ if (n == 0)
+ return;
+ drops = max_t(int, n, 0);
++ rcu_read_lock();
+ while ((parentid = sch->parent)) {
+ if (TC_H_MAJ(parentid) == TC_H_MAJ(TC_H_INGRESS))
+- return;
++ break;
+
++ if (sch->flags & TCQ_F_NOPARENT)
++ break;
++ /* TODO: perform the search on a per txq basis */
+ sch = qdisc_lookup(qdisc_dev(sch), TC_H_MAJ(parentid));
+ if (sch == NULL) {
+- WARN_ON(parentid != TC_H_ROOT);
+- return;
++ WARN_ON_ONCE(parentid != TC_H_ROOT);
++ break;
+ }
+ cops = sch->ops->cl_ops;
+ if (cops->qlen_notify) {
+@@ -768,6 +776,7 @@ void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
+ sch->q.qlen -= n;
+ __qdisc_qstats_drop(sch, drops);
+ }
++ rcu_read_unlock();
+ }
+ EXPORT_SYMBOL(qdisc_tree_decrease_qlen);
+
+@@ -941,7 +950,7 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
+ }
+ lockdep_set_class(qdisc_lock(sch), &qdisc_tx_lock);
+ if (!netif_is_multiqueue(dev))
+- sch->flags |= TCQ_F_ONETXQUEUE;
++ sch->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
+ }
+
+ sch->handle = handle;
+diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
+index 6efca30894aa..b453270be3fd 100644
+--- a/net/sched/sch_generic.c
++++ b/net/sched/sch_generic.c
+@@ -743,7 +743,7 @@ static void attach_one_default_qdisc(struct net_device *dev,
+ return;
+ }
+ if (!netif_is_multiqueue(dev))
+- qdisc->flags |= TCQ_F_ONETXQUEUE;
++ qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
+ }
+ dev_queue->qdisc_sleeping = qdisc;
+ }
+diff --git a/net/sched/sch_mq.c b/net/sched/sch_mq.c
+index f3cbaecd283a..3e82f047caaf 100644
+--- a/net/sched/sch_mq.c
++++ b/net/sched/sch_mq.c
+@@ -63,7 +63,7 @@ static int mq_init(struct Qdisc *sch, struct nlattr *opt)
+ if (qdisc == NULL)
+ goto err;
+ priv->qdiscs[ntx] = qdisc;
+- qdisc->flags |= TCQ_F_ONETXQUEUE;
++ qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
+ }
+
+ sch->flags |= TCQ_F_MQROOT;
+@@ -156,7 +156,7 @@ static int mq_graft(struct Qdisc *sch, unsigned long cl, struct Qdisc *new,
+
+ *old = dev_graft_qdisc(dev_queue, new);
+ if (new)
+- new->flags |= TCQ_F_ONETXQUEUE;
++ new->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
+ if (dev->flags & IFF_UP)
+ dev_activate(dev);
+ return 0;
+diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
+index 3811a745452c..ad70ecf57ce7 100644
+--- a/net/sched/sch_mqprio.c
++++ b/net/sched/sch_mqprio.c
+@@ -132,7 +132,7 @@ static int mqprio_init(struct Qdisc *sch, struct nlattr *opt)
+ goto err;
+ }
+ priv->qdiscs[i] = qdisc;
+- qdisc->flags |= TCQ_F_ONETXQUEUE;
++ qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
+ }
+
+ /* If the mqprio options indicate that hardware should own
+@@ -209,7 +209,7 @@ static int mqprio_graft(struct Qdisc *sch, unsigned long cl, struct Qdisc *new,
+ *old = dev_graft_qdisc(dev_queue, new);
+
+ if (new)
+- new->flags |= TCQ_F_ONETXQUEUE;
++ new->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
+
+ if (dev->flags & IFF_UP)
+ dev_activate(dev);
+diff --git a/net/sctp/auth.c b/net/sctp/auth.c
+index 4f15b7d730e1..1543e39f47c3 100644
+--- a/net/sctp/auth.c
++++ b/net/sctp/auth.c
+@@ -809,8 +809,8 @@ int sctp_auth_ep_set_hmacs(struct sctp_endpoint *ep,
+ if (!has_sha1)
+ return -EINVAL;
+
+- memcpy(ep->auth_hmacs_list->hmac_ids, &hmacs->shmac_idents[0],
+- hmacs->shmac_num_idents * sizeof(__u16));
++ for (i = 0; i < hmacs->shmac_num_idents; i++)
++ ep->auth_hmacs_list->hmac_ids[i] = htons(hmacs->shmac_idents[i]);
+ ep->auth_hmacs_list->param_hdr.length = htons(sizeof(sctp_paramhdr_t) +
+ hmacs->shmac_num_idents * sizeof(__u16));
+ return 0;
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index 5f6c4e61325b..66d796075050 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -7387,6 +7387,13 @@ struct proto sctp_prot = {
+
+ #if IS_ENABLED(CONFIG_IPV6)
+
++#include <net/transp_v6.h>
++static void sctp_v6_destroy_sock(struct sock *sk)
++{
++ sctp_destroy_sock(sk);
++ inet6_destroy_sock(sk);
++}
++
+ struct proto sctpv6_prot = {
+ .name = "SCTPv6",
+ .owner = THIS_MODULE,
+@@ -7396,7 +7403,7 @@ struct proto sctpv6_prot = {
+ .accept = sctp_accept,
+ .ioctl = sctp_ioctl,
+ .init = sctp_init_sock,
+- .destroy = sctp_destroy_sock,
++ .destroy = sctp_v6_destroy_sock,
+ .shutdown = sctp_shutdown,
+ .setsockopt = sctp_setsockopt,
+ .getsockopt = sctp_getsockopt,
+diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
+index 76e66695621c..1975fd8d1c10 100644
+--- a/net/unix/af_unix.c
++++ b/net/unix/af_unix.c
+@@ -316,6 +316,118 @@ found:
+ return s;
+ }
+
++/* Support code for asymmetrically connected dgram sockets
++ *
++ * If a datagram socket is connected to a socket not itself connected
++ * to the first socket (eg, /dev/log), clients may only enqueue more
++ * messages if the present receive queue of the server socket is not
++ * "too large". This means there's a second writeability condition
++ * poll and sendmsg need to test. The dgram recv code will do a wake
++ * up on the peer_wait wait queue of a socket upon reception of a
++ * datagram which needs to be propagated to sleeping would-be writers
++ * since these might not have sent anything so far. This can't be
++ * accomplished via poll_wait because the lifetime of the server
++ * socket might be less than that of its clients if these break their
++ * association with it or if the server socket is closed while clients
++ * are still connected to it and there's no way to inform "a polling
++ * implementation" that it should let go of a certain wait queue
++ *
++ * In order to propagate a wake up, a wait_queue_t of the client
++ * socket is enqueued on the peer_wait queue of the server socket
++ * whose wake function does a wake_up on the ordinary client socket
++ * wait queue. This connection is established whenever a write (or
++ * poll for write) hit the flow control condition and broken when the
++ * association to the server socket is dissolved or after a wake up
++ * was relayed.
++ */
++
++static int unix_dgram_peer_wake_relay(wait_queue_t *q, unsigned mode, int flags,
++ void *key)
++{
++ struct unix_sock *u;
++ wait_queue_head_t *u_sleep;
++
++ u = container_of(q, struct unix_sock, peer_wake);
++
++ __remove_wait_queue(&unix_sk(u->peer_wake.private)->peer_wait,
++ q);
++ u->peer_wake.private = NULL;
++
++ /* relaying can only happen while the wq still exists */
++ u_sleep = sk_sleep(&u->sk);
++ if (u_sleep)
++ wake_up_interruptible_poll(u_sleep, key);
++
++ return 0;
++}
++
++static int unix_dgram_peer_wake_connect(struct sock *sk, struct sock *other)
++{
++ struct unix_sock *u, *u_other;
++ int rc;
++
++ u = unix_sk(sk);
++ u_other = unix_sk(other);
++ rc = 0;
++ spin_lock(&u_other->peer_wait.lock);
++
++ if (!u->peer_wake.private) {
++ u->peer_wake.private = other;
++ __add_wait_queue(&u_other->peer_wait, &u->peer_wake);
++
++ rc = 1;
++ }
++
++ spin_unlock(&u_other->peer_wait.lock);
++ return rc;
++}
++
++static void unix_dgram_peer_wake_disconnect(struct sock *sk,
++ struct sock *other)
++{
++ struct unix_sock *u, *u_other;
++
++ u = unix_sk(sk);
++ u_other = unix_sk(other);
++ spin_lock(&u_other->peer_wait.lock);
++
++ if (u->peer_wake.private == other) {
++ __remove_wait_queue(&u_other->peer_wait, &u->peer_wake);
++ u->peer_wake.private = NULL;
++ }
++
++ spin_unlock(&u_other->peer_wait.lock);
++}
++
++static void unix_dgram_peer_wake_disconnect_wakeup(struct sock *sk,
++ struct sock *other)
++{
++ unix_dgram_peer_wake_disconnect(sk, other);
++ wake_up_interruptible_poll(sk_sleep(sk),
++ POLLOUT |
++ POLLWRNORM |
++ POLLWRBAND);
++}
++
++/* preconditions:
++ * - unix_peer(sk) == other
++ * - association is stable
++ */
++static int unix_dgram_peer_wake_me(struct sock *sk, struct sock *other)
++{
++ int connected;
++
++ connected = unix_dgram_peer_wake_connect(sk, other);
++
++ if (unix_recvq_full(other))
++ return 1;
++
++ if (connected)
++ unix_dgram_peer_wake_disconnect(sk, other);
++
++ return 0;
++}
++
+ static inline int unix_writable(struct sock *sk)
+ {
+ return (atomic_read(&sk->sk_wmem_alloc) << 2) <= sk->sk_sndbuf;
+@@ -420,6 +532,8 @@ static void unix_release_sock(struct sock *sk, int embrion)
+ skpair->sk_state_change(skpair);
+ sk_wake_async(skpair, SOCK_WAKE_WAITD, POLL_HUP);
+ }
++
++ unix_dgram_peer_wake_disconnect(sk, skpair);
+ sock_put(skpair); /* It may now die */
+ unix_peer(sk) = NULL;
+ }
+@@ -648,6 +762,7 @@ static struct sock *unix_create1(struct net *net, struct socket *sock)
+ INIT_LIST_HEAD(&u->link);
+ mutex_init(&u->readlock); /* single task reading lock */
+ init_waitqueue_head(&u->peer_wait);
++ init_waitqueue_func_entry(&u->peer_wake, unix_dgram_peer_wake_relay);
+ unix_insert_socket(unix_sockets_unbound(sk), sk);
+ out:
+ if (sk == NULL)
+@@ -1015,6 +1130,8 @@ restart:
+ if (unix_peer(sk)) {
+ struct sock *old_peer = unix_peer(sk);
+ unix_peer(sk) = other;
++ unix_dgram_peer_wake_disconnect_wakeup(sk, old_peer);
++
+ unix_state_double_unlock(sk, other);
+
+ if (other != old_peer)
+@@ -1453,6 +1570,7 @@ static int unix_dgram_sendmsg(struct socket *sock, struct msghdr *msg,
+ struct scm_cookie scm;
+ int max_level;
+ int data_len = 0;
++ int sk_locked;
+
+ wait_for_unix_gc();
+ err = scm_send(sock, msg, &scm, false);
+@@ -1532,12 +1650,14 @@ restart:
+ goto out_free;
+ }
+
++ sk_locked = 0;
+ unix_state_lock(other);
++restart_locked:
+ err = -EPERM;
+ if (!unix_may_send(sk, other))
+ goto out_unlock;
+
+- if (sock_flag(other, SOCK_DEAD)) {
++ if (unlikely(sock_flag(other, SOCK_DEAD))) {
+ /*
+ * Check with 1003.1g - what should
+ * datagram error
+@@ -1545,10 +1665,14 @@ restart:
+ unix_state_unlock(other);
+ sock_put(other);
+
++ if (!sk_locked)
++ unix_state_lock(sk);
++
+ err = 0;
+- unix_state_lock(sk);
+ if (unix_peer(sk) == other) {
+ unix_peer(sk) = NULL;
++ unix_dgram_peer_wake_disconnect_wakeup(sk, other);
++
+ unix_state_unlock(sk);
+
+ unix_dgram_disconnected(sk, other);
+@@ -1574,21 +1698,38 @@ restart:
+ goto out_unlock;
+ }
+
+- if (unix_peer(other) != sk && unix_recvq_full(other)) {
+- if (!timeo) {
+- err = -EAGAIN;
+- goto out_unlock;
++ if (unlikely(unix_peer(other) != sk && unix_recvq_full(other))) {
++ if (timeo) {
++ timeo = unix_wait_for_peer(other, timeo);
++
++ err = sock_intr_errno(timeo);
++ if (signal_pending(current))
++ goto out_free;
++
++ goto restart;
+ }
+
+- timeo = unix_wait_for_peer(other, timeo);
++ if (!sk_locked) {
++ unix_state_unlock(other);
++ unix_state_double_lock(sk, other);
++ }
+
+- err = sock_intr_errno(timeo);
+- if (signal_pending(current))
+- goto out_free;
++ if (unix_peer(sk) != other ||
++ unix_dgram_peer_wake_me(sk, other)) {
++ err = -EAGAIN;
++ sk_locked = 1;
++ goto out_unlock;
++ }
+
+- goto restart;
++ if (!sk_locked) {
++ sk_locked = 1;
++ goto restart_locked;
++ }
+ }
+
++ if (unlikely(sk_locked))
++ unix_state_unlock(sk);
++
+ if (sock_flag(other, SOCK_RCVTSTAMP))
+ __net_timestamp(skb);
+ maybe_add_creds(skb, sock, other);
+@@ -1602,6 +1743,8 @@ restart:
+ return len;
+
+ out_unlock:
++ if (sk_locked)
++ unix_state_unlock(sk);
+ unix_state_unlock(other);
+ out_free:
+ kfree_skb(skb);
+@@ -2245,14 +2388,16 @@ static unsigned int unix_dgram_poll(struct file *file, struct socket *sock,
+ return mask;
+
+ writable = unix_writable(sk);
+- other = unix_peer_get(sk);
+- if (other) {
+- if (unix_peer(other) != sk) {
+- sock_poll_wait(file, &unix_sk(other)->peer_wait, wait);
+- if (unix_recvq_full(other))
+- writable = 0;
+- }
+- sock_put(other);
++ if (writable) {
++ unix_state_lock(sk);
++
++ other = unix_peer(sk);
++ if (other && unix_peer(other) != sk &&
++ unix_recvq_full(other) &&
++ unix_dgram_peer_wake_me(sk, other))
++ writable = 0;
++
++ unix_state_unlock(sk);
+ }
+
+ if (writable)
+diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
+index 225b78b4ef12..d02eccd51f6e 100644
+--- a/sound/pci/hda/patch_hdmi.c
++++ b/sound/pci/hda/patch_hdmi.c
+@@ -48,8 +48,9 @@ MODULE_PARM_DESC(static_hdmi_pcm, "Don't restrict PCM parameters per ELD info");
+ #define is_haswell(codec) ((codec)->core.vendor_id == 0x80862807)
+ #define is_broadwell(codec) ((codec)->core.vendor_id == 0x80862808)
+ #define is_skylake(codec) ((codec)->core.vendor_id == 0x80862809)
++#define is_broxton(codec) ((codec)->core.vendor_id == 0x8086280a)
+ #define is_haswell_plus(codec) (is_haswell(codec) || is_broadwell(codec) \
+- || is_skylake(codec))
++ || is_skylake(codec) || is_broxton(codec))
+
+ #define is_valleyview(codec) ((codec)->core.vendor_id == 0x80862882)
+ #define is_cherryview(codec) ((codec)->core.vendor_id == 0x80862883)
+diff --git a/tools/net/Makefile b/tools/net/Makefile
+index ee577ea03ba5..ddf888010652 100644
+--- a/tools/net/Makefile
++++ b/tools/net/Makefile
+@@ -4,6 +4,9 @@ CC = gcc
+ LEX = flex
+ YACC = bison
+
++CFLAGS += -Wall -O2
++CFLAGS += -D__EXPORTED_HEADERS__ -I../../include/uapi -I../../include
++
+ %.yacc.c: %.y
+ $(YACC) -o $@ -d $<
+
+@@ -12,15 +15,13 @@ YACC = bison
+
+ all : bpf_jit_disasm bpf_dbg bpf_asm
+
+-bpf_jit_disasm : CFLAGS = -Wall -O2 -DPACKAGE='bpf_jit_disasm'
++bpf_jit_disasm : CFLAGS += -DPACKAGE='bpf_jit_disasm'
+ bpf_jit_disasm : LDLIBS = -lopcodes -lbfd -ldl
+ bpf_jit_disasm : bpf_jit_disasm.o
+
+-bpf_dbg : CFLAGS = -Wall -O2
+ bpf_dbg : LDLIBS = -lreadline
+ bpf_dbg : bpf_dbg.o
+
+-bpf_asm : CFLAGS = -Wall -O2 -I.
+ bpf_asm : LDLIBS =
+ bpf_asm : bpf_asm.o bpf_exp.yacc.o bpf_exp.lex.o
+ bpf_exp.lex.o : bpf_exp.yacc.c
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-12-10 13:54 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-12-10 13:54 UTC (permalink / raw
To: gentoo-commits
commit: cc2721358925bd19d1cee58f5cb7a68c054b5272
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Dec 10 13:54:25 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Dec 10 13:54:25 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=cc272135
Linux patch 4.1.14
0000_README | 4 +
1013_linux-4.1.14.patch | 3152 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 3156 insertions(+)
diff --git a/0000_README b/0000_README
index acad761..bb7a9d9 100644
--- a/0000_README
+++ b/0000_README
@@ -95,6 +95,10 @@ Patch: 1012_linux-4.1.13.patch
From: http://www.kernel.org
Desc: Linux 4.1.13
+Patch: 1013_linux-4.1.14.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.14
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1013_linux-4.1.14.patch b/1013_linux-4.1.14.patch
new file mode 100644
index 0000000..86576c9
--- /dev/null
+++ b/1013_linux-4.1.14.patch
@@ -0,0 +1,3152 @@
+diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
+index c3b6b301d8b0..749b7bae0c00 100644
+--- a/Documentation/filesystems/proc.txt
++++ b/Documentation/filesystems/proc.txt
+@@ -140,7 +140,8 @@ Table 1-1: Process specific entries in /proc
+ stat Process status
+ statm Process memory status information
+ status Process status in human readable form
+- wchan If CONFIG_KALLSYMS is set, a pre-decoded wchan
++ wchan Present with CONFIG_KALLSYMS=y: it shows the kernel function
++ symbol the task is blocked in - or "0" if not blocked.
+ pagemap Page table
+ stack Report full stack trace, enable via CONFIG_STACKTRACE
+ smaps a extension based on maps, showing the memory consumption of
+@@ -309,7 +310,7 @@ Table 1-4: Contents of the stat files (as of 2.6.30-rc7)
+ blocked bitmap of blocked signals
+ sigign bitmap of ignored signals
+ sigcatch bitmap of caught signals
+- wchan address where process went to sleep
++ 0 (place holder, used to be the wchan address, use /proc/PID/wchan instead)
+ 0 (place holder)
+ 0 (place holder)
+ exit_signal signal to send to parent thread on exit
+diff --git a/Makefile b/Makefile
+index d5d229db61d5..091280d66452 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 13
++SUBLEVEL = 14
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/imx27.dtsi b/arch/arm/boot/dts/imx27.dtsi
+index bc215e4b75fd..6a87233d0b19 100644
+--- a/arch/arm/boot/dts/imx27.dtsi
++++ b/arch/arm/boot/dts/imx27.dtsi
+@@ -477,7 +477,10 @@
+ compatible = "fsl,imx27-usb";
+ reg = <0x10024000 0x200>;
+ interrupts = <56>;
+- clocks = <&clks IMX27_CLK_USB_IPG_GATE>;
++ clocks = <&clks IMX27_CLK_USB_IPG_GATE>,
++ <&clks IMX27_CLK_USB_AHB_GATE>,
++ <&clks IMX27_CLK_USB_DIV>;
++ clock-names = "ipg", "ahb", "per";
+ fsl,usbmisc = <&usbmisc 0>;
+ status = "disabled";
+ };
+@@ -486,7 +489,10 @@
+ compatible = "fsl,imx27-usb";
+ reg = <0x10024200 0x200>;
+ interrupts = <54>;
+- clocks = <&clks IMX27_CLK_USB_IPG_GATE>;
++ clocks = <&clks IMX27_CLK_USB_IPG_GATE>,
++ <&clks IMX27_CLK_USB_AHB_GATE>,
++ <&clks IMX27_CLK_USB_DIV>;
++ clock-names = "ipg", "ahb", "per";
+ fsl,usbmisc = <&usbmisc 1>;
+ dr_mode = "host";
+ status = "disabled";
+@@ -496,7 +502,10 @@
+ compatible = "fsl,imx27-usb";
+ reg = <0x10024400 0x200>;
+ interrupts = <55>;
+- clocks = <&clks IMX27_CLK_USB_IPG_GATE>;
++ clocks = <&clks IMX27_CLK_USB_IPG_GATE>,
++ <&clks IMX27_CLK_USB_AHB_GATE>,
++ <&clks IMX27_CLK_USB_DIV>;
++ clock-names = "ipg", "ahb", "per";
+ fsl,usbmisc = <&usbmisc 2>;
+ dr_mode = "host";
+ status = "disabled";
+@@ -506,7 +515,6 @@
+ #index-cells = <1>;
+ compatible = "fsl,imx27-usbmisc";
+ reg = <0x10024600 0x200>;
+- clocks = <&clks IMX27_CLK_USB_AHB_GATE>;
+ };
+
+ sahara2: sahara@10025000 {
+diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts
+index 1b958e92d674..2e7c1364cb00 100644
+--- a/arch/arm/boot/dts/omap5-uevm.dts
++++ b/arch/arm/boot/dts/omap5-uevm.dts
+@@ -31,6 +31,24 @@
+ regulator-max-microvolt = <3000000>;
+ };
+
++ mmc3_pwrseq: sdhci0_pwrseq {
++ compatible = "mmc-pwrseq-simple";
++ clocks = <&clk32kgaudio>;
++ clock-names = "ext_clock";
++ };
++
++ vmmcsdio_fixed: fixedregulator-mmcsdio {
++ compatible = "regulator-fixed";
++ regulator-name = "vmmcsdio_fixed";
++ regulator-min-microvolt = <1800000>;
++ regulator-max-microvolt = <1800000>;
++ gpio = <&gpio5 12 GPIO_ACTIVE_HIGH>; /* gpio140 WLAN_EN */
++ enable-active-high;
++ startup-delay-us = <70000>;
++ pinctrl-names = "default";
++ pinctrl-0 = <&wlan_pins>;
++ };
++
+ /* HS USB Host PHY on PORT 2 */
+ hsusb2_phy: hsusb2_phy {
+ compatible = "usb-nop-xceiv";
+@@ -197,12 +215,20 @@
+ >;
+ };
+
+- mcspi4_pins: pinmux_mcspi4_pins {
++ mmc3_pins: pinmux_mmc3_pins {
++ pinctrl-single,pins = <
++ OMAP5_IOPAD(0x01a4, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_clk */
++ OMAP5_IOPAD(0x01a6, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_cmd */
++ OMAP5_IOPAD(0x01a8, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_data0 */
++ OMAP5_IOPAD(0x01aa, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_data1 */
++ OMAP5_IOPAD(0x01ac, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_data2 */
++ OMAP5_IOPAD(0x01ae, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_data3 */
++ >;
++ };
++
++ wlan_pins: pinmux_wlan_pins {
+ pinctrl-single,pins = <
+- 0x164 (PIN_INPUT | MUX_MODE1) /* mcspi4_clk */
+- 0x168 (PIN_INPUT | MUX_MODE1) /* mcspi4_simo */
+- 0x16a (PIN_INPUT | MUX_MODE1) /* mcspi4_somi */
+- 0x16c (PIN_INPUT | MUX_MODE1) /* mcspi4_cs0 */
++ OMAP5_IOPAD(0x1bc, PIN_OUTPUT | MUX_MODE6) /* mcspi1_clk.gpio5_140 */
+ >;
+ };
+
+@@ -276,6 +302,12 @@
+ 0x1A (PIN_OUTPUT | MUX_MODE0) /* fref_clk1_out, USB hub clk */
+ >;
+ };
++
++ wlcore_irq_pin: pinmux_wlcore_irq_pin {
++ pinctrl-single,pins = <
++ OMAP5_IOPAD(0x040, WAKEUP_EN | PIN_INPUT_PULLUP | MUX_MODE6) /* llia_wakereqin.gpio1_wk14 */
++ >;
++ };
+ };
+
+ &mmc1 {
+@@ -290,8 +322,25 @@
+ };
+
+ &mmc3 {
++ vmmc-supply = <&vmmcsdio_fixed>;
++ mmc-pwrseq = <&mmc3_pwrseq>;
+ bus-width = <4>;
+- ti,non-removable;
++ non-removable;
++ cap-power-off-card;
++ pinctrl-names = "default";
++ pinctrl-0 = <&mmc3_pins &wlcore_irq_pin>;
++ interrupts-extended = <&gic GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH
++ &omap5_pmx_core 0x168>;
++
++ #address-cells = <1>;
++ #size-cells = <0>;
++ wlcore: wlcore@2 {
++ compatible = "ti,wl1271";
++ reg = <2>;
++ interrupt-parent = <&gpio1>;
++ interrupts = <14 IRQ_TYPE_LEVEL_HIGH>; /* gpio 14 */
++ ref-clock-frequency = <26000000>;
++ };
+ };
+
+ &mmc4 {
+@@ -591,11 +640,6 @@
+ pinctrl-0 = <&mcspi3_pins>;
+ };
+
+-&mcspi4 {
+- pinctrl-names = "default";
+- pinctrl-0 = <&mcspi4_pins>;
+-};
+-
+ &uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_pins>;
+diff --git a/arch/arm/boot/dts/sama5d4.dtsi b/arch/arm/boot/dts/sama5d4.dtsi
+index a5f5f4090af6..9cf0ab62db7d 100644
+--- a/arch/arm/boot/dts/sama5d4.dtsi
++++ b/arch/arm/boot/dts/sama5d4.dtsi
+@@ -918,11 +918,11 @@
+ reg = <0xf8018000 0x4000>;
+ interrupts = <33 IRQ_TYPE_LEVEL_HIGH 6>;
+ dmas = <&dma1
+- (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))
+- AT91_XDMAC_DT_PERID(4)>,
++ (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
++ | AT91_XDMAC_DT_PERID(4))>,
+ <&dma1
+- (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))
+- AT91_XDMAC_DT_PERID(5)>;
++ (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
++ | AT91_XDMAC_DT_PERID(5))>;
+ dma-names = "tx", "rx";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c1>;
+diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c
+index 5662a872689b..30613204da15 100644
+--- a/arch/arm/common/edma.c
++++ b/arch/arm/common/edma.c
+@@ -406,7 +406,8 @@ static irqreturn_t dma_irq_handler(int irq, void *data)
+ BIT(slot));
+ if (edma_cc[ctlr]->intr_data[channel].callback)
+ edma_cc[ctlr]->intr_data[channel].callback(
+- channel, EDMA_DMA_COMPLETE,
++ EDMA_CTLR_CHAN(ctlr, channel),
++ EDMA_DMA_COMPLETE,
+ edma_cc[ctlr]->intr_data[channel].data);
+ }
+ } while (sh_ipr);
+@@ -460,7 +461,8 @@ static irqreturn_t dma_ccerr_handler(int irq, void *data)
+ if (edma_cc[ctlr]->intr_data[k].
+ callback) {
+ edma_cc[ctlr]->intr_data[k].
+- callback(k,
++ callback(
++ EDMA_CTLR_CHAN(ctlr, k),
+ EDMA_DMA_CC_ERROR,
+ edma_cc[ctlr]->intr_data
+ [k].data);
+diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
+index bd22b2c8a051..d3161c7ee1fd 100644
+--- a/arch/arm/mach-at91/pm_suspend.S
++++ b/arch/arm/mach-at91/pm_suspend.S
+@@ -81,6 +81,8 @@ tmp2 .req r5
+ * @r2: base address of second SDRAM Controller or 0 if not present
+ * @r3: pm information
+ */
++/* at91_pm_suspend_in_sram must be 8-byte aligned per the requirements of fncpy() */
++ .align 3
+ ENTRY(at91_pm_suspend_in_sram)
+ /* Save registers on stack */
+ stmfd sp!, {r4 - r12, lr}
+diff --git a/arch/arm/mach-pxa/include/mach/pxa27x.h b/arch/arm/mach-pxa/include/mach/pxa27x.h
+index 599b925a657c..1a4291936c58 100644
+--- a/arch/arm/mach-pxa/include/mach/pxa27x.h
++++ b/arch/arm/mach-pxa/include/mach/pxa27x.h
+@@ -19,7 +19,7 @@
+ #define ARB_CORE_PARK (1<<24) /* Be parked with core when idle */
+ #define ARB_LOCK_FLAG (1<<23) /* Only Locking masters gain access to the bus */
+
+-extern int __init pxa27x_set_pwrmode(unsigned int mode);
++extern int pxa27x_set_pwrmode(unsigned int mode);
+ extern void pxa27x_cpu_pm_enter(suspend_state_t state);
+
+ #endif /* __MACH_PXA27x_H */
+diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
+index af423a48c2e3..782e6b98dd9a 100644
+--- a/arch/arm/mach-pxa/pxa27x.c
++++ b/arch/arm/mach-pxa/pxa27x.c
+@@ -251,7 +251,7 @@ static struct clk_lookup pxa27x_clkregs[] = {
+ */
+ static unsigned int pwrmode = PWRMODE_SLEEP;
+
+-int __init pxa27x_set_pwrmode(unsigned int mode)
++int pxa27x_set_pwrmode(unsigned int mode)
+ {
+ switch (mode) {
+ case PWRMODE_SLEEP:
+diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c
+index fbe74c6806f3..49d1110cff53 100644
+--- a/arch/arm/mach-tegra/board-paz00.c
++++ b/arch/arm/mach-tegra/board-paz00.c
+@@ -39,8 +39,8 @@ static struct platform_device wifi_rfkill_device = {
+ static struct gpiod_lookup_table wifi_gpio_lookup = {
+ .dev_id = "rfkill_gpio",
+ .table = {
+- GPIO_LOOKUP_IDX("tegra-gpio", 25, NULL, 0, 0),
+- GPIO_LOOKUP_IDX("tegra-gpio", 85, NULL, 1, 0),
++ GPIO_LOOKUP("tegra-gpio", 25, "reset", 0),
++ GPIO_LOOKUP("tegra-gpio", 85, "shutdown", 0),
+ { },
+ },
+ };
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+index 6e4b9ff22ef3..64d7486262e5 100644
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -1395,12 +1395,19 @@ static int arm_iommu_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
+ unsigned long uaddr = vma->vm_start;
+ unsigned long usize = vma->vm_end - vma->vm_start;
+ struct page **pages = __iommu_get_pages(cpu_addr, attrs);
++ unsigned long nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
++ unsigned long off = vma->vm_pgoff;
+
+ vma->vm_page_prot = __get_dma_pgprot(attrs, vma->vm_page_prot);
+
+ if (!pages)
+ return -ENXIO;
+
++ if (off >= nr_pages || (usize >> PAGE_SHIFT) > nr_pages - off)
++ return -ENXIO;
++
++ pages += off;
++
+ do {
+ int ret = vm_insert_page(vma, uaddr, *pages++);
+ if (ret) {
+diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
+index d6dd9fdbc3be..d4264bb0a409 100644
+--- a/arch/arm64/include/asm/ptrace.h
++++ b/arch/arm64/include/asm/ptrace.h
+@@ -83,14 +83,14 @@
+ #define compat_sp regs[13]
+ #define compat_lr regs[14]
+ #define compat_sp_hyp regs[15]
+-#define compat_sp_irq regs[16]
+-#define compat_lr_irq regs[17]
+-#define compat_sp_svc regs[18]
+-#define compat_lr_svc regs[19]
+-#define compat_sp_abt regs[20]
+-#define compat_lr_abt regs[21]
+-#define compat_sp_und regs[22]
+-#define compat_lr_und regs[23]
++#define compat_lr_irq regs[16]
++#define compat_sp_irq regs[17]
++#define compat_lr_svc regs[18]
++#define compat_sp_svc regs[19]
++#define compat_lr_abt regs[20]
++#define compat_sp_abt regs[21]
++#define compat_lr_und regs[22]
++#define compat_sp_und regs[23]
+ #define compat_r8_fiq regs[24]
+ #define compat_r9_fiq regs[25]
+ #define compat_r10_fiq regs[26]
+diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
+index a2c29865c3fe..aff07bcad882 100644
+--- a/arch/arm64/kernel/vmlinux.lds.S
++++ b/arch/arm64/kernel/vmlinux.lds.S
+@@ -54,9 +54,12 @@ PECOFF_FILE_ALIGNMENT = 0x200;
+ #define PECOFF_EDATA_PADDING
+ #endif
+
+-#ifdef CONFIG_DEBUG_ALIGN_RODATA
++#if defined(CONFIG_DEBUG_ALIGN_RODATA)
+ #define ALIGN_DEBUG_RO . = ALIGN(1<<SECTION_SHIFT);
+ #define ALIGN_DEBUG_RO_MIN(min) ALIGN_DEBUG_RO
++#elif defined(CONFIG_DEBUG_RODATA)
++#define ALIGN_DEBUG_RO . = ALIGN(1<<PAGE_SHIFT);
++#define ALIGN_DEBUG_RO_MIN(min) ALIGN_DEBUG_RO
+ #else
+ #define ALIGN_DEBUG_RO
+ #define ALIGN_DEBUG_RO_MIN(min) . = ALIGN(min);
+diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
+index d5fa3eaf39a1..41b1b090f56f 100644
+--- a/arch/mips/kvm/emulate.c
++++ b/arch/mips/kvm/emulate.c
+@@ -1581,7 +1581,7 @@ enum emulation_result kvm_mips_emulate_cache(uint32_t inst, uint32_t *opc,
+
+ base = (inst >> 21) & 0x1f;
+ op_inst = (inst >> 16) & 0x1f;
+- offset = inst & 0xffff;
++ offset = (int16_t)inst;
+ cache = (inst >> 16) & 0x3;
+ op = (inst >> 18) & 0x7;
+
+diff --git a/arch/mips/kvm/locore.S b/arch/mips/kvm/locore.S
+index c567240386a0..d1ee95a7f7dd 100644
+--- a/arch/mips/kvm/locore.S
++++ b/arch/mips/kvm/locore.S
+@@ -165,9 +165,11 @@ FEXPORT(__kvm_mips_vcpu_run)
+
+ FEXPORT(__kvm_mips_load_asid)
+ /* Set the ASID for the Guest Kernel */
+- INT_SLL t0, t0, 1 /* with kseg0 @ 0x40000000, kernel */
+- /* addresses shift to 0x80000000 */
+- bltz t0, 1f /* If kernel */
++ PTR_L t0, VCPU_COP0(k1)
++ LONG_L t0, COP0_STATUS(t0)
++ andi t0, KSU_USER | ST0_ERL | ST0_EXL
++ xori t0, KSU_USER
++ bnez t0, 1f /* If kernel */
+ INT_ADDIU t1, k1, VCPU_GUEST_KERNEL_ASID /* (BD) */
+ INT_ADDIU t1, k1, VCPU_GUEST_USER_ASID /* else user */
+ 1:
+@@ -482,9 +484,11 @@ __kvm_mips_return_to_guest:
+ mtc0 t0, CP0_EPC
+
+ /* Set the ASID for the Guest Kernel */
+- INT_SLL t0, t0, 1 /* with kseg0 @ 0x40000000, kernel */
+- /* addresses shift to 0x80000000 */
+- bltz t0, 1f /* If kernel */
++ PTR_L t0, VCPU_COP0(k1)
++ LONG_L t0, COP0_STATUS(t0)
++ andi t0, KSU_USER | ST0_ERL | ST0_EXL
++ xori t0, KSU_USER
++ bnez t0, 1f /* If kernel */
+ INT_ADDIU t1, k1, VCPU_GUEST_KERNEL_ASID /* (BD) */
+ INT_ADDIU t1, k1, VCPU_GUEST_USER_ASID /* else user */
+ 1:
+diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
+index 52f205ae1281..22ee0afc7d5d 100644
+--- a/arch/mips/kvm/mips.c
++++ b/arch/mips/kvm/mips.c
+@@ -277,7 +277,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
+
+ if (!gebase) {
+ err = -ENOMEM;
+- goto out_free_cpu;
++ goto out_uninit_cpu;
+ }
+ kvm_debug("Allocated %d bytes for KVM Exception Handlers @ %p\n",
+ ALIGN(size, PAGE_SIZE), gebase);
+@@ -341,6 +341,9 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
+ out_free_gebase:
+ kfree(gebase);
+
++out_uninit_cpu:
++ kvm_vcpu_uninit(vcpu);
++
+ out_free_cpu:
+ kfree(vcpu);
+
+diff --git a/arch/mips/lantiq/clk.c b/arch/mips/lantiq/clk.c
+index 3fc2e6d70c77..a0706fd4ce0a 100644
+--- a/arch/mips/lantiq/clk.c
++++ b/arch/mips/lantiq/clk.c
+@@ -99,6 +99,23 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
+ }
+ EXPORT_SYMBOL(clk_set_rate);
+
++long clk_round_rate(struct clk *clk, unsigned long rate)
++{
++ if (unlikely(!clk_good(clk)))
++ return 0;
++ if (clk->rates && *clk->rates) {
++ unsigned long *r = clk->rates;
++
++ while (*r && (*r != rate))
++ r++;
++ if (!*r) {
++ return clk->rate;
++ }
++ }
++ return rate;
++}
++EXPORT_SYMBOL(clk_round_rate);
++
+ int clk_enable(struct clk *clk)
+ {
+ if (unlikely(!clk_good(clk)))
+diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
+index b745a109bfc1..3dbba9a2bb0f 100644
+--- a/arch/s390/kvm/interrupt.c
++++ b/arch/s390/kvm/interrupt.c
+@@ -1054,8 +1054,7 @@ static int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
+ src_id, 0, 2);
+
+ /* sending vcpu invalid */
+- if (src_id >= KVM_MAX_VCPUS ||
+- kvm_get_vcpu(vcpu->kvm, src_id) == NULL)
++ if (kvm_get_vcpu_by_id(vcpu->kvm, src_id) == NULL)
+ return -EINVAL;
+
+ if (sclp_has_sigpif())
+@@ -1134,6 +1133,10 @@ static int __inject_sigp_emergency(struct kvm_vcpu *vcpu,
+ trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_EMERGENCY,
+ irq->u.emerg.code, 0, 2);
+
++ /* sending vcpu invalid */
++ if (kvm_get_vcpu_by_id(vcpu->kvm, irq->u.emerg.code) == NULL)
++ return -EINVAL;
++
+ set_bit(irq->u.emerg.code, li->sigp_emerg_pending);
+ set_bit(IRQ_PEND_EXT_EMERGENCY, &li->pending_irqs);
+ atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
+diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
+index 8cd8e7b288c5..c3805cf4b982 100644
+--- a/arch/s390/kvm/kvm-s390.c
++++ b/arch/s390/kvm/kvm-s390.c
+@@ -283,12 +283,16 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
+ r = 0;
+ break;
+ case KVM_CAP_S390_VECTOR_REGISTERS:
+- if (MACHINE_HAS_VX) {
++ mutex_lock(&kvm->lock);
++ if (atomic_read(&kvm->online_vcpus)) {
++ r = -EBUSY;
++ } else if (MACHINE_HAS_VX) {
+ set_kvm_facility(kvm->arch.model.fac->mask, 129);
+ set_kvm_facility(kvm->arch.model.fac->list, 129);
+ r = 0;
+ } else
+ r = -EINVAL;
++ mutex_unlock(&kvm->lock);
+ break;
+ case KVM_CAP_S390_USER_STSI:
+ kvm->arch.user_stsi = 1;
+@@ -1031,7 +1035,9 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
+ if (!kvm->arch.sca)
+ goto out_err;
+ spin_lock(&kvm_lock);
+- sca_offset = (sca_offset + 16) & 0x7f0;
++ sca_offset += 16;
++ if (sca_offset + sizeof(struct sca_block) > PAGE_SIZE)
++ sca_offset = 0;
+ kvm->arch.sca = (struct sca_block *) ((char *) kvm->arch.sca + sca_offset);
+ spin_unlock(&kvm_lock);
+
+diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
+index 72e58bd2bee7..7171056fc24d 100644
+--- a/arch/s390/kvm/sigp.c
++++ b/arch/s390/kvm/sigp.c
+@@ -294,12 +294,8 @@ static int handle_sigp_dst(struct kvm_vcpu *vcpu, u8 order_code,
+ u16 cpu_addr, u32 parameter, u64 *status_reg)
+ {
+ int rc;
+- struct kvm_vcpu *dst_vcpu;
++ struct kvm_vcpu *dst_vcpu = kvm_get_vcpu_by_id(vcpu->kvm, cpu_addr);
+
+- if (cpu_addr >= KVM_MAX_VCPUS)
+- return SIGP_CC_NOT_OPERATIONAL;
+-
+- dst_vcpu = kvm_get_vcpu(vcpu->kvm, cpu_addr);
+ if (!dst_vcpu)
+ return SIGP_CC_NOT_OPERATIONAL;
+
+@@ -481,7 +477,7 @@ int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu)
+ trace_kvm_s390_handle_sigp_pei(vcpu, order_code, cpu_addr);
+
+ if (order_code == SIGP_EXTERNAL_CALL) {
+- dest_vcpu = kvm_get_vcpu(vcpu->kvm, cpu_addr);
++ dest_vcpu = kvm_get_vcpu_by_id(vcpu->kvm, cpu_addr);
+ BUG_ON(dest_vcpu == NULL);
+
+ kvm_s390_vcpu_wakeup(dest_vcpu);
+diff --git a/arch/x86/include/uapi/asm/svm.h b/arch/x86/include/uapi/asm/svm.h
+index b5d7640abc5d..8a4add8e4639 100644
+--- a/arch/x86/include/uapi/asm/svm.h
++++ b/arch/x86/include/uapi/asm/svm.h
+@@ -100,6 +100,7 @@
+ { SVM_EXIT_EXCP_BASE + UD_VECTOR, "UD excp" }, \
+ { SVM_EXIT_EXCP_BASE + PF_VECTOR, "PF excp" }, \
+ { SVM_EXIT_EXCP_BASE + NM_VECTOR, "NM excp" }, \
++ { SVM_EXIT_EXCP_BASE + AC_VECTOR, "AC excp" }, \
+ { SVM_EXIT_EXCP_BASE + MC_VECTOR, "MC excp" }, \
+ { SVM_EXIT_INTR, "interrupt" }, \
+ { SVM_EXIT_NMI, "nmi" }, \
+diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
+index 205e0f3df501..5732326ec126 100644
+--- a/arch/x86/kernel/cpu/common.c
++++ b/arch/x86/kernel/cpu/common.c
+@@ -291,10 +291,9 @@ __setup("nosmap", setup_disable_smap);
+
+ static __always_inline void setup_smap(struct cpuinfo_x86 *c)
+ {
+- unsigned long eflags;
++ unsigned long eflags = native_save_fl();
+
+ /* This should have been cleared long ago */
+- raw_local_save_flags(eflags);
+ BUG_ON(eflags & X86_EFLAGS_AC);
+
+ if (cpu_has(c, X86_FEATURE_SMAP)) {
+diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
+index 7e5da2cbe59e..174fa035a09a 100644
+--- a/arch/x86/kernel/head_64.S
++++ b/arch/x86/kernel/head_64.S
+@@ -65,6 +65,9 @@ startup_64:
+ * tables and then reload them.
+ */
+
++ /* Sanitize CPU configuration */
++ call verify_cpu
++
+ /*
+ * Compute the delta between the address I am compiled to run at and the
+ * address I am actually running at.
+@@ -174,6 +177,9 @@ ENTRY(secondary_startup_64)
+ * after the boot processor executes this code.
+ */
+
++ /* Sanitize CPU configuration */
++ call verify_cpu
++
+ movq $(init_level4_pgt - __START_KERNEL_map), %rax
+ 1:
+
+@@ -288,6 +294,8 @@ ENTRY(secondary_startup_64)
+ pushq %rax # target address in negative space
+ lretq
+
++#include "verify_cpu.S"
++
+ #ifdef CONFIG_HOTPLUG_CPU
+ /*
+ * Boot CPU0 entry point. It's called from play_dead(). Everything has been set
+diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
+index d74ac33290ae..1473a02e6ccb 100644
+--- a/arch/x86/kernel/setup.c
++++ b/arch/x86/kernel/setup.c
+@@ -1194,6 +1194,14 @@ void __init setup_arch(char **cmdline_p)
+ clone_pgd_range(initial_page_table + KERNEL_PGD_BOUNDARY,
+ swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+ KERNEL_PGD_PTRS);
++
++ /*
++ * sync back low identity map too. It is used for example
++ * in the 32-bit EFI stub.
++ */
++ clone_pgd_range(initial_page_table,
++ swapper_pg_dir + KERNEL_PGD_BOUNDARY,
++ min(KERNEL_PGD_PTRS, KERNEL_PGD_BOUNDARY));
+ #endif
+
+ tboot_probe();
+diff --git a/arch/x86/kernel/verify_cpu.S b/arch/x86/kernel/verify_cpu.S
+index b9242bacbe59..4cf401f581e7 100644
+--- a/arch/x86/kernel/verify_cpu.S
++++ b/arch/x86/kernel/verify_cpu.S
+@@ -34,10 +34,11 @@
+ #include <asm/msr-index.h>
+
+ verify_cpu:
+- pushfl # Save caller passed flags
+- pushl $0 # Kill any dangerous flags
+- popfl
++ pushf # Save caller passed flags
++ push $0 # Kill any dangerous flags
++ popf
+
++#ifndef __x86_64__
+ pushfl # standard way to check for cpuid
+ popl %eax
+ movl %eax,%ebx
+@@ -48,6 +49,7 @@ verify_cpu:
+ popl %eax
+ cmpl %eax,%ebx
+ jz verify_cpu_no_longmode # cpu has no cpuid
++#endif
+
+ movl $0x0,%eax # See if cpuid 1 is implemented
+ cpuid
+@@ -130,10 +132,10 @@ verify_cpu_sse_test:
+ jmp verify_cpu_sse_test # try again
+
+ verify_cpu_no_longmode:
+- popfl # Restore caller passed flags
++ popf # Restore caller passed flags
+ movl $1,%eax
+ ret
+ verify_cpu_sse_ok:
+- popfl # Restore caller passed flags
++ popf # Restore caller passed flags
+ xorl %eax, %eax
+ ret
+diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
+index 67d07e051436..7dd9a8d3911a 100644
+--- a/arch/x86/kvm/lapic.c
++++ b/arch/x86/kvm/lapic.c
+@@ -339,6 +339,8 @@ void kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir)
+ struct kvm_lapic *apic = vcpu->arch.apic;
+
+ __kvm_apic_update_irr(pir, apic->regs);
++
++ kvm_make_request(KVM_REQ_EVENT, vcpu);
+ }
+ EXPORT_SYMBOL_GPL(kvm_apic_update_irr);
+
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 7858cd9acfe4..454ccb082e18 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -1105,6 +1105,7 @@ static void init_vmcb(struct vcpu_svm *svm)
+ set_exception_intercept(svm, PF_VECTOR);
+ set_exception_intercept(svm, UD_VECTOR);
+ set_exception_intercept(svm, MC_VECTOR);
++ set_exception_intercept(svm, AC_VECTOR);
+
+ set_intercept(svm, INTERCEPT_INTR);
+ set_intercept(svm, INTERCEPT_NMI);
+@@ -1791,6 +1792,12 @@ static int ud_interception(struct vcpu_svm *svm)
+ return 1;
+ }
+
++static int ac_interception(struct vcpu_svm *svm)
++{
++ kvm_queue_exception_e(&svm->vcpu, AC_VECTOR, 0);
++ return 1;
++}
++
+ static void svm_fpu_activate(struct kvm_vcpu *vcpu)
+ {
+ struct vcpu_svm *svm = to_svm(vcpu);
+@@ -3361,6 +3368,7 @@ static int (*const svm_exit_handlers[])(struct vcpu_svm *svm) = {
+ [SVM_EXIT_EXCP_BASE + PF_VECTOR] = pf_interception,
+ [SVM_EXIT_EXCP_BASE + NM_VECTOR] = nm_interception,
+ [SVM_EXIT_EXCP_BASE + MC_VECTOR] = mc_interception,
++ [SVM_EXIT_EXCP_BASE + AC_VECTOR] = ac_interception,
+ [SVM_EXIT_INTR] = intr_interception,
+ [SVM_EXIT_NMI] = nmi_interception,
+ [SVM_EXIT_SMI] = nop_on_interception,
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index bc3041e1abbc..a243854c35d5 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -1567,7 +1567,7 @@ static void update_exception_bitmap(struct kvm_vcpu *vcpu)
+ u32 eb;
+
+ eb = (1u << PF_VECTOR) | (1u << UD_VECTOR) | (1u << MC_VECTOR) |
+- (1u << NM_VECTOR) | (1u << DB_VECTOR);
++ (1u << NM_VECTOR) | (1u << DB_VECTOR) | (1u << AC_VECTOR);
+ if ((vcpu->guest_debug &
+ (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP)) ==
+ (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP))
+@@ -5127,6 +5127,9 @@ static int handle_exception(struct kvm_vcpu *vcpu)
+ return handle_rmode_exception(vcpu, ex_no, error_code);
+
+ switch (ex_no) {
++ case AC_VECTOR:
++ kvm_queue_exception_e(vcpu, AC_VECTOR, error_code);
++ return 1;
+ case DB_VECTOR:
+ dr6 = vmcs_readl(EXIT_QUALIFICATION);
+ if (!(vcpu->guest_debug &
+diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
+index e527a3e13939..fa893c3ec408 100644
+--- a/drivers/bluetooth/ath3k.c
++++ b/drivers/bluetooth/ath3k.c
+@@ -93,6 +93,7 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x04CA, 0x300f) },
+ { USB_DEVICE(0x04CA, 0x3010) },
+ { USB_DEVICE(0x0930, 0x0219) },
++ { USB_DEVICE(0x0930, 0x021c) },
+ { USB_DEVICE(0x0930, 0x0220) },
+ { USB_DEVICE(0x0930, 0x0227) },
+ { USB_DEVICE(0x0b05, 0x17d0) },
+@@ -104,6 +105,7 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x0CF3, 0x311F) },
+ { USB_DEVICE(0x0cf3, 0x3121) },
+ { USB_DEVICE(0x0CF3, 0x817a) },
++ { USB_DEVICE(0x0CF3, 0x817b) },
+ { USB_DEVICE(0x0cf3, 0xe003) },
+ { USB_DEVICE(0x0CF3, 0xE004) },
+ { USB_DEVICE(0x0CF3, 0xE005) },
+@@ -153,6 +155,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
+@@ -164,6 +167,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index c65501539224..7bf87d9bfd7d 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -191,6 +191,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
+@@ -202,6 +203,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
+diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
+index bc96f103bd7c..9064636a867f 100644
+--- a/drivers/clk/versatile/clk-icst.c
++++ b/drivers/clk/versatile/clk-icst.c
+@@ -156,8 +156,10 @@ struct clk *icst_clk_register(struct device *dev,
+ icst->lockreg = base + desc->lock_offset;
+
+ clk = clk_register(dev, &icst->hw);
+- if (IS_ERR(clk))
++ if (IS_ERR(clk)) {
++ kfree(pclone);
+ kfree(icst);
++ }
+
+ return clk;
+ }
+diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c
+index c5265c1262c5..6aacd205a774 100644
+--- a/drivers/mfd/twl6040.c
++++ b/drivers/mfd/twl6040.c
+@@ -647,6 +647,8 @@ static int twl6040_probe(struct i2c_client *client,
+
+ twl6040->clk32k = devm_clk_get(&client->dev, "clk32k");
+ if (IS_ERR(twl6040->clk32k)) {
++ if (PTR_ERR(twl6040->clk32k) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
+ dev_info(&client->dev, "clk32k is not handled\n");
+ twl6040->clk32k = NULL;
+ }
+diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
+index aede704605c6..141c2a42d7ed 100644
+--- a/drivers/net/can/dev.c
++++ b/drivers/net/can/dev.c
+@@ -915,7 +915,7 @@ static int can_fill_info(struct sk_buff *skb, const struct net_device *dev)
+ nla_put(skb, IFLA_CAN_BITTIMING_CONST,
+ sizeof(*priv->bittiming_const), priv->bittiming_const)) ||
+
+- nla_put(skb, IFLA_CAN_CLOCK, sizeof(cm), &priv->clock) ||
++ nla_put(skb, IFLA_CAN_CLOCK, sizeof(priv->clock), &priv->clock) ||
+ nla_put_u32(skb, IFLA_CAN_STATE, state) ||
+ nla_put(skb, IFLA_CAN_CTRLMODE, sizeof(cm), &cm) ||
+ nla_put_u32(skb, IFLA_CAN_RESTART_MS, priv->restart_ms) ||
+diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
+index 32bd7f451aa4..0c048e261ee6 100644
+--- a/drivers/net/can/sja1000/sja1000.c
++++ b/drivers/net/can/sja1000/sja1000.c
+@@ -218,6 +218,9 @@ static void sja1000_start(struct net_device *dev)
+ priv->write_reg(priv, SJA1000_RXERR, 0x0);
+ priv->read_reg(priv, SJA1000_ECC);
+
++ /* clear interrupt flags */
++ priv->read_reg(priv, SJA1000_IR);
++
+ /* leave reset mode */
+ set_normal_mode(dev);
+ }
+diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
+index 4d608f0117cd..e07afc673d7a 100644
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -949,7 +949,7 @@ static void mvneta_defaults_set(struct mvneta_port *pp)
+ /* Set CPU queue access map - all CPUs have access to all RX
+ * queues and to all TX queues
+ */
+- for (cpu = 0; cpu < CONFIG_NR_CPUS; cpu++)
++ for_each_present_cpu(cpu)
+ mvreg_write(pp, MVNETA_CPU_MAP(cpu),
+ (MVNETA_CPU_RXQ_ACCESS_ALL_MASK |
+ MVNETA_CPU_TXQ_ACCESS_ALL_MASK));
+diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
+index 529ef0594b90..3756e45d8cec 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
++++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
+@@ -2382,7 +2382,7 @@ int mlx4_multi_func_init(struct mlx4_dev *dev)
+ }
+ }
+
+- memset(&priv->mfunc.master.cmd_eqe, 0, dev->caps.eqe_size);
++ memset(&priv->mfunc.master.cmd_eqe, 0, sizeof(struct mlx4_eqe));
+ priv->mfunc.master.cmd_eqe.type = MLX4_EVENT_TYPE_CMD;
+ INIT_WORK(&priv->mfunc.master.comm_work,
+ mlx4_master_comm_channel);
+diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
+index 983b1d51244d..337811d208bd 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
++++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
+@@ -185,7 +185,7 @@ static void slave_event(struct mlx4_dev *dev, u8 slave, struct mlx4_eqe *eqe)
+ return;
+ }
+
+- memcpy(s_eqe, eqe, dev->caps.eqe_size - 1);
++ memcpy(s_eqe, eqe, sizeof(struct mlx4_eqe) - 1);
+ s_eqe->slave_id = slave;
+ /* ensure all information is written before setting the ownersip bit */
+ dma_wmb();
+diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
+index fbb6cfa0f5f1..feca46efa12f 100644
+--- a/drivers/net/ethernet/sfc/ef10.c
++++ b/drivers/net/ethernet/sfc/ef10.c
+@@ -1344,7 +1344,9 @@ static void efx_ef10_tx_write(struct efx_tx_queue *tx_queue)
+ unsigned int write_ptr;
+ efx_qword_t *txd;
+
+- BUG_ON(tx_queue->write_count == tx_queue->insert_count);
++ tx_queue->xmit_more_available = false;
++ if (unlikely(tx_queue->write_count == tx_queue->insert_count))
++ return;
+
+ do {
+ write_ptr = tx_queue->write_count & tx_queue->ptr_mask;
+diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c
+index bb89e96a125e..6d4e0047a31d 100644
+--- a/drivers/net/ethernet/sfc/farch.c
++++ b/drivers/net/ethernet/sfc/farch.c
+@@ -319,7 +319,9 @@ void efx_farch_tx_write(struct efx_tx_queue *tx_queue)
+ unsigned write_ptr;
+ unsigned old_write_count = tx_queue->write_count;
+
+- BUG_ON(tx_queue->write_count == tx_queue->insert_count);
++ tx_queue->xmit_more_available = false;
++ if (unlikely(tx_queue->write_count == tx_queue->insert_count))
++ return;
+
+ do {
+ write_ptr = tx_queue->write_count & tx_queue->ptr_mask;
+diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
+index 325dd94bca46..0bdef4a074dd 100644
+--- a/drivers/net/ethernet/sfc/net_driver.h
++++ b/drivers/net/ethernet/sfc/net_driver.h
+@@ -218,6 +218,7 @@ struct efx_tx_buffer {
+ * @tso_packets: Number of packets via the TSO xmit path
+ * @pushes: Number of times the TX push feature has been used
+ * @pio_packets: Number of times the TX PIO feature has been used
++ * @xmit_more_available: Are any packets waiting to be pushed to the NIC
+ * @empty_read_count: If the completion path has seen the queue as empty
+ * and the transmission path has not yet checked this, the value of
+ * @read_count bitwise-added to %EFX_EMPTY_COUNT_VALID; otherwise 0.
+@@ -250,6 +251,7 @@ struct efx_tx_queue {
+ unsigned int tso_packets;
+ unsigned int pushes;
+ unsigned int pio_packets;
++ bool xmit_more_available;
+ /* Statistics to supplement MAC stats */
+ unsigned long tx_packets;
+
+diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
+index aaf2987512b5..e70edc3dea7e 100644
+--- a/drivers/net/ethernet/sfc/tx.c
++++ b/drivers/net/ethernet/sfc/tx.c
+@@ -431,8 +431,20 @@ finish_packet:
+ efx_tx_maybe_stop_queue(tx_queue);
+
+ /* Pass off to hardware */
+- if (!skb->xmit_more || netif_xmit_stopped(tx_queue->core_txq))
++ if (!skb->xmit_more || netif_xmit_stopped(tx_queue->core_txq)) {
++ struct efx_tx_queue *txq2 = efx_tx_queue_partner(tx_queue);
++
++ /* There could be packets left on the partner queue if those
++ * SKBs had skb->xmit_more set. If we do not push those they
++ * could be left for a long time and cause a netdev watchdog.
++ */
++ if (txq2->xmit_more_available)
++ efx_nic_push_buffers(txq2);
++
+ efx_nic_push_buffers(tx_queue);
++ } else {
++ tx_queue->xmit_more_available = skb->xmit_more;
++ }
+
+ tx_queue->tx_packets++;
+
+@@ -721,6 +733,7 @@ void efx_init_tx_queue(struct efx_tx_queue *tx_queue)
+ tx_queue->read_count = 0;
+ tx_queue->old_read_count = 0;
+ tx_queue->empty_read_count = 0 | EFX_EMPTY_COUNT_VALID;
++ tx_queue->xmit_more_available = false;
+
+ /* Set up TX descriptor ring */
+ efx_nic_init_tx(tx_queue);
+@@ -746,6 +759,7 @@ void efx_fini_tx_queue(struct efx_tx_queue *tx_queue)
+
+ ++tx_queue->read_count;
+ }
++ tx_queue->xmit_more_available = false;
+ netdev_tx_reset_queue(tx_queue->core_txq);
+ }
+
+@@ -1301,8 +1315,20 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
+ efx_tx_maybe_stop_queue(tx_queue);
+
+ /* Pass off to hardware */
+- if (!skb->xmit_more || netif_xmit_stopped(tx_queue->core_txq))
++ if (!skb->xmit_more || netif_xmit_stopped(tx_queue->core_txq)) {
++ struct efx_tx_queue *txq2 = efx_tx_queue_partner(tx_queue);
++
++ /* There could be packets left on the partner queue if those
++ * SKBs had skb->xmit_more set. If we do not push those they
++ * could be left for a long time and cause a netdev watchdog.
++ */
++ if (txq2->xmit_more_available)
++ efx_nic_push_buffers(txq2);
++
+ efx_nic_push_buffers(tx_queue);
++ } else {
++ tx_queue->xmit_more_available = skb->xmit_more;
++ }
+
+ tx_queue->tso_bursts++;
+ return NETDEV_TX_OK;
+diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+index 771cda2a48b2..2e51b816a7e8 100644
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+@@ -721,10 +721,13 @@ static int stmmac_get_ts_info(struct net_device *dev,
+ {
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+- if ((priv->hwts_tx_en) && (priv->hwts_rx_en)) {
++ if ((priv->dma_cap.time_stamp || priv->dma_cap.atime_stamp)) {
+
+- info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
++ info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
++ SOF_TIMESTAMPING_TX_HARDWARE |
++ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_RX_HARDWARE |
++ SOF_TIMESTAMPING_SOFTWARE |
+ SOF_TIMESTAMPING_RAW_HARDWARE;
+
+ if (priv->ptp_clock)
+diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
+index 58858c5589db..4dba5fbc735e 100644
+--- a/drivers/net/macvtap.c
++++ b/drivers/net/macvtap.c
+@@ -82,7 +82,7 @@ static const struct proto_ops macvtap_socket_ops;
+ #define TUN_OFFLOADS (NETIF_F_HW_CSUM | NETIF_F_TSO_ECN | NETIF_F_TSO | \
+ NETIF_F_TSO6 | NETIF_F_UFO)
+ #define RX_OFFLOADS (NETIF_F_GRO | NETIF_F_LRO)
+-#define TAP_FEATURES (NETIF_F_GSO | NETIF_F_SG)
++#define TAP_FEATURES (NETIF_F_GSO | NETIF_F_SG | NETIF_F_FRAGLIST)
+
+ static struct macvlan_dev *macvtap_get_vlan_rcu(const struct net_device *dev)
+ {
+diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
+index db2c3cdf2c40..ab33262ed826 100644
+--- a/drivers/net/ppp/pppoe.c
++++ b/drivers/net/ppp/pppoe.c
+@@ -589,7 +589,7 @@ static int pppoe_release(struct socket *sock)
+
+ po = pppox_sk(sk);
+
+- if (sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND | PPPOX_ZOMBIE)) {
++ if (po->pppoe_dev) {
+ dev_put(po->pppoe_dev);
+ po->pppoe_dev = NULL;
+ }
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index f603f362504b..4e0470d396a3 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -764,6 +764,10 @@ static const struct usb_device_id products[] = {
+ {QMI_FIXED_INTF(0x1199, 0x9056, 8)}, /* Sierra Wireless Modem */
+ {QMI_FIXED_INTF(0x1199, 0x9057, 8)},
+ {QMI_FIXED_INTF(0x1199, 0x9061, 8)}, /* Sierra Wireless Modem */
++ {QMI_FIXED_INTF(0x1199, 0x9070, 8)}, /* Sierra Wireless MC74xx/EM74xx */
++ {QMI_FIXED_INTF(0x1199, 0x9070, 10)}, /* Sierra Wireless MC74xx/EM74xx */
++ {QMI_FIXED_INTF(0x1199, 0x9071, 8)}, /* Sierra Wireless MC74xx/EM74xx */
++ {QMI_FIXED_INTF(0x1199, 0x9071, 10)}, /* Sierra Wireless MC74xx/EM74xx */
+ {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)}, /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */
+ {QMI_FIXED_INTF(0x1bbb, 0x0203, 2)}, /* Alcatel L800MA */
+ {QMI_FIXED_INTF(0x2357, 0x0201, 4)}, /* TP-LINK HSUPA Modem MA180 */
+diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
+index 7fbca37a1adf..237f8e5e493d 100644
+--- a/drivers/net/virtio_net.c
++++ b/drivers/net/virtio_net.c
+@@ -1756,9 +1756,9 @@ static int virtnet_probe(struct virtio_device *vdev)
+ /* Do we support "hardware" checksums? */
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_CSUM)) {
+ /* This opens up the world of extra features. */
+- dev->hw_features |= NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST;
++ dev->hw_features |= NETIF_F_HW_CSUM | NETIF_F_SG;
+ if (csum)
+- dev->features |= NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST;
++ dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
+
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_GSO)) {
+ dev->hw_features |= NETIF_F_TSO | NETIF_F_UFO
+diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
+index 5e021b0b3f9e..1734cc50ded8 100644
+--- a/drivers/net/wireless/ath/ath10k/mac.c
++++ b/drivers/net/wireless/ath/ath10k/mac.c
+@@ -3183,7 +3183,7 @@ static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
+
+ static u32 get_nss_from_chainmask(u16 chain_mask)
+ {
+- if ((chain_mask & 0x15) == 0x15)
++ if ((chain_mask & 0xf) == 0xf)
+ return 4;
+ else if ((chain_mask & 0x7) == 0x7)
+ return 3;
+diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c
+index 8b16949a9cb9..88bf80a942b4 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/drv.c
++++ b/drivers/net/wireless/iwlwifi/pcie/drv.c
+@@ -421,14 +421,21 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
+ /* 8000 Series */
+ {IWL_PCI_DEVICE(0x24F3, 0x0010, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x1010, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x0130, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x1130, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x0132, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x1132, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0110, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x01F0, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x0012, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x1012, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x1110, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0050, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0250, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x1050, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0150, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x1150, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F4, 0x0030, iwl8260_2ac_cfg)},
+- {IWL_PCI_DEVICE(0x24F4, 0x1130, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F4, 0x1030, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0xC010, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0xD010, iwl8260_2ac_cfg)},
+@@ -437,18 +444,28 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
+ {IWL_PCI_DEVICE(0x24F3, 0xC050, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0xD050, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x8010, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x8110, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x9010, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x9110, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F4, 0x8030, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F4, 0x9030, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x8130, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x9130, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x8132, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x9132, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x8050, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x8150, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x9050, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x9150, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0004, iwl8260_2n_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x0044, iwl8260_2n_cfg)},
+ {IWL_PCI_DEVICE(0x24F5, 0x0010, iwl4165_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F6, 0x0030, iwl4165_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0810, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0910, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0850, iwl8260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x24F3, 0x0950, iwl8260_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x24F3, 0x0930, iwl8260_2ac_cfg)},
+ #endif /* CONFIG_IWLMVM */
+
+ {0}
+diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
+index 699a4802835f..1de80a8e357a 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
++++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
+@@ -572,10 +572,8 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
+
+ do {
+ ret = iwl_pcie_set_hw_ready(trans);
+- if (ret >= 0) {
+- ret = 0;
+- goto out;
+- }
++ if (ret >= 0)
++ return 0;
+
+ usleep_range(200, 1000);
+ t += 200;
+@@ -585,10 +583,6 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
+
+ IWL_ERR(trans, "Couldn't prepare the card\n");
+
+-out:
+- iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
+- CSR_RESET_LINK_PWR_MGMT_DISABLED);
+-
+ return ret;
+ }
+
+diff --git a/drivers/net/wireless/mwifiex/debugfs.c b/drivers/net/wireless/mwifiex/debugfs.c
+index 1fb329dc6744..24e48bddf186 100644
+--- a/drivers/net/wireless/mwifiex/debugfs.c
++++ b/drivers/net/wireless/mwifiex/debugfs.c
+@@ -593,7 +593,7 @@ mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
+ (struct mwifiex_private *) file->private_data;
+ unsigned long addr = get_zeroed_page(GFP_KERNEL);
+ char *buf = (char *) addr;
+- int pos = 0, ret = 0, i;
++ int pos, ret, i;
+ u8 value[MAX_EEPROM_DATA];
+
+ if (!buf)
+@@ -601,7 +601,7 @@ mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
+
+ if (saved_offset == -1) {
+ /* No command has been given */
+- pos += snprintf(buf, PAGE_SIZE, "0");
++ pos = snprintf(buf, PAGE_SIZE, "0");
+ goto done;
+ }
+
+@@ -610,17 +610,17 @@ mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
+ (u16) saved_bytes, value);
+ if (ret) {
+ ret = -EINVAL;
+- goto done;
++ goto out_free;
+ }
+
+- pos += snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
++ pos = snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
+
+ for (i = 0; i < saved_bytes; i++)
+- pos += snprintf(buf + strlen(buf), PAGE_SIZE, "%d ", value[i]);
+-
+- ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
++ pos += scnprintf(buf + pos, PAGE_SIZE - pos, "%d ", value[i]);
+
+ done:
++ ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
++out_free:
+ free_page(addr);
+ return ret;
+ }
+diff --git a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
+index 0038d29a37fe..a470e32c49c1 100644
+--- a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
++++ b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
+@@ -874,7 +874,7 @@ void lnet_debug_peer(lnet_nid_t nid);
+
+ static inline void lnet_peer_set_alive(lnet_peer_t *lp)
+ {
+- lp->lp_last_alive = lp->lp_last_query = get_seconds();
++ lp->lp_last_alive = lp->lp_last_query = jiffies;
+ if (!lp->lp_alive)
+ lnet_notify_locked(lp, 0, 1, lp->lp_last_alive);
+ }
+diff --git a/drivers/staging/rtl8712/usb_intf.c b/drivers/staging/rtl8712/usb_intf.c
+index f8b5b332e7c3..943a0e204532 100644
+--- a/drivers/staging/rtl8712/usb_intf.c
++++ b/drivers/staging/rtl8712/usb_intf.c
+@@ -144,6 +144,7 @@ static struct usb_device_id rtl871x_usb_id_tbl[] = {
+ {USB_DEVICE(0x0DF6, 0x0058)},
+ {USB_DEVICE(0x0DF6, 0x0049)},
+ {USB_DEVICE(0x0DF6, 0x004C)},
++ {USB_DEVICE(0x0DF6, 0x006C)},
+ {USB_DEVICE(0x0DF6, 0x0064)},
+ /* Skyworth */
+ {USB_DEVICE(0x14b2, 0x3300)},
+diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
+index 6b6c6606af5f..e5edf45e9d4c 100644
+--- a/drivers/tty/n_tty.c
++++ b/drivers/tty/n_tty.c
+@@ -169,7 +169,7 @@ static inline int tty_copy_to_user(struct tty_struct *tty,
+ {
+ struct n_tty_data *ldata = tty->disc_data;
+
+- tty_audit_add_data(tty, to, n, ldata->icanon);
++ tty_audit_add_data(tty, from, n, ldata->icanon);
+ return copy_to_user(to, from, n);
+ }
+
+diff --git a/drivers/tty/tty_audit.c b/drivers/tty/tty_audit.c
+index 90ca082935f6..3d245cd3d8e6 100644
+--- a/drivers/tty/tty_audit.c
++++ b/drivers/tty/tty_audit.c
+@@ -265,7 +265,7 @@ static struct tty_audit_buf *tty_audit_buf_get(struct tty_struct *tty,
+ *
+ * Audit @data of @size from @tty, if necessary.
+ */
+-void tty_audit_add_data(struct tty_struct *tty, unsigned char *data,
++void tty_audit_add_data(struct tty_struct *tty, const void *data,
+ size_t size, unsigned icanon)
+ {
+ struct tty_audit_buf *buf;
+diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
+index 21837f14a403..5a5c1ab5a375 100644
+--- a/drivers/tty/tty_io.c
++++ b/drivers/tty/tty_io.c
+@@ -1287,18 +1287,22 @@ int tty_send_xchar(struct tty_struct *tty, char ch)
+ int was_stopped = tty->stopped;
+
+ if (tty->ops->send_xchar) {
++ down_read(&tty->termios_rwsem);
+ tty->ops->send_xchar(tty, ch);
++ up_read(&tty->termios_rwsem);
+ return 0;
+ }
+
+ if (tty_write_lock(tty, 0) < 0)
+ return -ERESTARTSYS;
+
++ down_read(&tty->termios_rwsem);
+ if (was_stopped)
+ start_tty(tty);
+ tty->ops->write(tty, &ch, 1);
+ if (was_stopped)
+ stop_tty(tty);
++ up_read(&tty->termios_rwsem);
+ tty_write_unlock(tty);
+ return 0;
+ }
+diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
+index 8e53fe469664..7bbf86b94716 100644
+--- a/drivers/tty/tty_ioctl.c
++++ b/drivers/tty/tty_ioctl.c
+@@ -1144,16 +1144,12 @@ int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
+ spin_unlock_irq(&tty->flow_lock);
+ break;
+ case TCIOFF:
+- down_read(&tty->termios_rwsem);
+ if (STOP_CHAR(tty) != __DISABLED_CHAR)
+ retval = tty_send_xchar(tty, STOP_CHAR(tty));
+- up_read(&tty->termios_rwsem);
+ break;
+ case TCION:
+- down_read(&tty->termios_rwsem);
+ if (START_CHAR(tty) != __DISABLED_CHAR)
+ retval = tty_send_xchar(tty, START_CHAR(tty));
+- up_read(&tty->termios_rwsem);
+ break;
+ default:
+ return -EINVAL;
+diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
+index fa774323ebda..846ceb91ec14 100644
+--- a/drivers/usb/chipidea/ci_hdrc_imx.c
++++ b/drivers/usb/chipidea/ci_hdrc_imx.c
+@@ -68,6 +68,12 @@ struct ci_hdrc_imx_data {
+ struct imx_usbmisc_data *usbmisc_data;
+ bool supports_runtime_pm;
+ bool in_lpm;
++ /* SoC before i.mx6 (except imx23/imx28) needs three clks */
++ bool need_three_clks;
++ struct clk *clk_ipg;
++ struct clk *clk_ahb;
++ struct clk *clk_per;
++ /* --------------------------------- */
+ };
+
+ /* Common functions shared by usbmisc drivers */
+@@ -119,6 +125,102 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
+ }
+
+ /* End of common functions shared by usbmisc drivers*/
++static int imx_get_clks(struct device *dev)
++{
++ struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
++ int ret = 0;
++
++ data->clk_ipg = devm_clk_get(dev, "ipg");
++ if (IS_ERR(data->clk_ipg)) {
++ /* If the platform only needs one clocks */
++ data->clk = devm_clk_get(dev, NULL);
++ if (IS_ERR(data->clk)) {
++ ret = PTR_ERR(data->clk);
++ dev_err(dev,
++ "Failed to get clks, err=%ld,%ld\n",
++ PTR_ERR(data->clk), PTR_ERR(data->clk_ipg));
++ return ret;
++ }
++ return ret;
++ }
++
++ data->clk_ahb = devm_clk_get(dev, "ahb");
++ if (IS_ERR(data->clk_ahb)) {
++ ret = PTR_ERR(data->clk_ahb);
++ dev_err(dev,
++ "Failed to get ahb clock, err=%d\n", ret);
++ return ret;
++ }
++
++ data->clk_per = devm_clk_get(dev, "per");
++ if (IS_ERR(data->clk_per)) {
++ ret = PTR_ERR(data->clk_per);
++ dev_err(dev,
++ "Failed to get per clock, err=%d\n", ret);
++ return ret;
++ }
++
++ data->need_three_clks = true;
++ return ret;
++}
++
++static int imx_prepare_enable_clks(struct device *dev)
++{
++ struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
++ int ret = 0;
++
++ if (data->need_three_clks) {
++ ret = clk_prepare_enable(data->clk_ipg);
++ if (ret) {
++ dev_err(dev,
++ "Failed to prepare/enable ipg clk, err=%d\n",
++ ret);
++ return ret;
++ }
++
++ ret = clk_prepare_enable(data->clk_ahb);
++ if (ret) {
++ dev_err(dev,
++ "Failed to prepare/enable ahb clk, err=%d\n",
++ ret);
++ clk_disable_unprepare(data->clk_ipg);
++ return ret;
++ }
++
++ ret = clk_prepare_enable(data->clk_per);
++ if (ret) {
++ dev_err(dev,
++ "Failed to prepare/enable per clk, err=%d\n",
++ ret);
++ clk_disable_unprepare(data->clk_ahb);
++ clk_disable_unprepare(data->clk_ipg);
++ return ret;
++ }
++ } else {
++ ret = clk_prepare_enable(data->clk);
++ if (ret) {
++ dev_err(dev,
++ "Failed to prepare/enable clk, err=%d\n",
++ ret);
++ return ret;
++ }
++ }
++
++ return ret;
++}
++
++static void imx_disable_unprepare_clks(struct device *dev)
++{
++ struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
++
++ if (data->need_three_clks) {
++ clk_disable_unprepare(data->clk_per);
++ clk_disable_unprepare(data->clk_ahb);
++ clk_disable_unprepare(data->clk_ipg);
++ } else {
++ clk_disable_unprepare(data->clk);
++ }
++}
+
+ static int ci_hdrc_imx_probe(struct platform_device *pdev)
+ {
+@@ -137,23 +239,18 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
+ if (!data)
+ return -ENOMEM;
+
++ platform_set_drvdata(pdev, data);
+ data->usbmisc_data = usbmisc_get_init_data(&pdev->dev);
+ if (IS_ERR(data->usbmisc_data))
+ return PTR_ERR(data->usbmisc_data);
+
+- data->clk = devm_clk_get(&pdev->dev, NULL);
+- if (IS_ERR(data->clk)) {
+- dev_err(&pdev->dev,
+- "Failed to get clock, err=%ld\n", PTR_ERR(data->clk));
+- return PTR_ERR(data->clk);
+- }
++ ret = imx_get_clks(&pdev->dev);
++ if (ret)
++ return ret;
+
+- ret = clk_prepare_enable(data->clk);
+- if (ret) {
+- dev_err(&pdev->dev,
+- "Failed to prepare or enable clock, err=%d\n", ret);
++ ret = imx_prepare_enable_clks(&pdev->dev);
++ if (ret)
+ return ret;
+- }
+
+ data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0);
+ if (IS_ERR(data->phy)) {
+@@ -196,8 +293,6 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
+ goto disable_device;
+ }
+
+- platform_set_drvdata(pdev, data);
+-
+ if (data->supports_runtime_pm) {
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+@@ -210,7 +305,7 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
+ disable_device:
+ ci_hdrc_remove_device(data->ci_pdev);
+ err_clk:
+- clk_disable_unprepare(data->clk);
++ imx_disable_unprepare_clks(&pdev->dev);
+ return ret;
+ }
+
+@@ -224,7 +319,7 @@ static int ci_hdrc_imx_remove(struct platform_device *pdev)
+ pm_runtime_put_noidle(&pdev->dev);
+ }
+ ci_hdrc_remove_device(data->ci_pdev);
+- clk_disable_unprepare(data->clk);
++ imx_disable_unprepare_clks(&pdev->dev);
+
+ return 0;
+ }
+@@ -236,7 +331,7 @@ static int imx_controller_suspend(struct device *dev)
+
+ dev_dbg(dev, "at %s\n", __func__);
+
+- clk_disable_unprepare(data->clk);
++ imx_disable_unprepare_clks(dev);
+ data->in_lpm = true;
+
+ return 0;
+@@ -254,7 +349,7 @@ static int imx_controller_resume(struct device *dev)
+ return 0;
+ }
+
+- ret = clk_prepare_enable(data->clk);
++ ret = imx_prepare_enable_clks(dev);
+ if (ret)
+ return ret;
+
+@@ -269,7 +364,7 @@ static int imx_controller_resume(struct device *dev)
+ return 0;
+
+ clk_disable:
+- clk_disable_unprepare(data->clk);
++ imx_disable_unprepare_clks(dev);
+ return ret;
+ }
+
+diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
+index 6e53c24fa1cb..92937c14f818 100644
+--- a/drivers/usb/chipidea/udc.c
++++ b/drivers/usb/chipidea/udc.c
+@@ -1730,6 +1730,22 @@ static int ci_udc_start(struct usb_gadget *gadget,
+ return retval;
+ }
+
++static void ci_udc_stop_for_otg_fsm(struct ci_hdrc *ci)
++{
++ if (!ci_otg_is_fsm_mode(ci))
++ return;
++
++ mutex_lock(&ci->fsm.lock);
++ if (ci->fsm.otg->state == OTG_STATE_A_PERIPHERAL) {
++ ci->fsm.a_bidl_adis_tmout = 1;
++ ci_hdrc_otg_fsm_start(ci);
++ } else if (ci->fsm.otg->state == OTG_STATE_B_PERIPHERAL) {
++ ci->fsm.protocol = PROTO_UNDEF;
++ ci->fsm.otg->state = OTG_STATE_UNDEFINED;
++ }
++ mutex_unlock(&ci->fsm.lock);
++}
++
+ /**
+ * ci_udc_stop: unregister a gadget driver
+ */
+@@ -1754,6 +1770,7 @@ static int ci_udc_stop(struct usb_gadget *gadget)
+ ci->driver = NULL;
+ spin_unlock_irqrestore(&ci->lock, flags);
+
++ ci_udc_stop_for_otg_fsm(ci);
+ return 0;
+ }
+
+diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
+index 0924ee40a966..b9adc2ec49dd 100644
+--- a/drivers/usb/class/usblp.c
++++ b/drivers/usb/class/usblp.c
+@@ -869,11 +869,11 @@ static int usblp_wwait(struct usblp *usblp, int nonblock)
+
+ add_wait_queue(&usblp->wwait, &waita);
+ for (;;) {
+- set_current_state(TASK_INTERRUPTIBLE);
+ if (mutex_lock_interruptible(&usblp->mut)) {
+ rc = -EINTR;
+ break;
+ }
++ set_current_state(TASK_INTERRUPTIBLE);
+ rc = usblp_wtest(usblp, nonblock);
+ mutex_unlock(&usblp->mut);
+ if (rc <= 0)
+diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
+index 2bbab3d86fff..8e9518fe7763 100644
+--- a/drivers/usb/dwc3/core.c
++++ b/drivers/usb/dwc3/core.c
+@@ -445,12 +445,18 @@ static int dwc3_core_init(struct dwc3 *dwc)
+
+ reg = dwc3_readl(dwc->regs, DWC3_GSNPSID);
+ /* This should read as U3 followed by revision number */
+- if ((reg & DWC3_GSNPSID_MASK) != 0x55330000) {
++ if ((reg & DWC3_GSNPSID_MASK) == 0x55330000) {
++ /* Detected DWC_usb3 IP */
++ dwc->revision = reg;
++ } else if ((reg & DWC3_GSNPSID_MASK) == 0x33310000) {
++ /* Detected DWC_usb31 IP */
++ dwc->revision = dwc3_readl(dwc->regs, DWC3_VER_NUMBER);
++ dwc->revision |= DWC3_REVISION_IS_DWC31;
++ } else {
+ dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n");
+ ret = -ENODEV;
+ goto err0;
+ }
+- dwc->revision = reg;
+
+ /*
+ * Write Linux Version Code to our GUID register so it's easy to figure
+diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
+index c0eafa6fd403..173edd4ca20e 100644
+--- a/drivers/usb/dwc3/core.h
++++ b/drivers/usb/dwc3/core.h
+@@ -107,6 +107,9 @@
+ #define DWC3_GPRTBIMAP_FS0 0xc188
+ #define DWC3_GPRTBIMAP_FS1 0xc18c
+
++#define DWC3_VER_NUMBER 0xc1a0
++#define DWC3_VER_TYPE 0xc1a4
++
+ #define DWC3_GUSB2PHYCFG(n) (0xc200 + (n * 0x04))
+ #define DWC3_GUSB2I2CCTL(n) (0xc240 + (n * 0x04))
+
+@@ -752,6 +755,14 @@ struct dwc3 {
+ u32 num_event_buffers;
+ u32 u1u2;
+ u32 maximum_speed;
++
++ /*
++ * All 3.1 IP version constants are greater than the 3.0 IP
++ * version constants. This works for most version checks in
++ * dwc3. However, in the future, this may not apply as
++ * features may be developed on newer versions of the 3.0 IP
++ * that are not in the 3.1 IP.
++ */
+ u32 revision;
+
+ #define DWC3_REVISION_173A 0x5533173a
+@@ -774,6 +785,13 @@ struct dwc3 {
+ #define DWC3_REVISION_270A 0x5533270a
+ #define DWC3_REVISION_280A 0x5533280a
+
++/*
++ * NOTICE: we're using bit 31 as a "is usb 3.1" flag. This is really
++ * just so dwc31 revisions are always larger than dwc3.
++ */
++#define DWC3_REVISION_IS_DWC31 0x80000000
++#define DWC3_USB31_REVISION_110A (0x3131302a | DWC3_REVISION_IS_USB31)
++
+ enum dwc3_ep0_next ep0_next_event;
+ enum dwc3_ep0_state ep0state;
+ enum dwc3_link_state link_state;
+diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
+index b773fb53d6a7..830f020230c4 100644
+--- a/drivers/usb/dwc3/dwc3-pci.c
++++ b/drivers/usb/dwc3/dwc3-pci.c
+@@ -25,6 +25,8 @@
+ #include "platform_data.h"
+
+ #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
++#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce
++#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf
+ #define PCI_DEVICE_ID_INTEL_BYT 0x0f37
+ #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e
+ #define PCI_DEVICE_ID_INTEL_BSW 0x22B7
+@@ -65,6 +67,21 @@ static int dwc3_pci_quirks(struct pci_dev *pdev)
+ sizeof(pdata));
+ }
+
++ if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
++ (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 ||
++ pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI ||
++ pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) {
++
++ struct dwc3_platform_data pdata;
++
++ memset(&pdata, 0, sizeof(pdata));
++ pdata.usb3_lpm_capable = true;
++ pdata.has_lpm_erratum = true;
++
++ return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
++ sizeof(pdata));
++ }
++
+ return 0;
+ }
+
+@@ -136,6 +153,14 @@ static const struct pci_device_id dwc3_pci_id_table[] = {
+ PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
+ PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
+ },
++ {
++ PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
++ PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
++ },
++ {
++ PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
++ PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
++ },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index 333a7c0078fc..6fbf461d523c 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -1859,27 +1859,32 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
+ unsigned int i;
+ int ret;
+
+- req = next_request(&dep->req_queued);
+- if (!req) {
+- WARN_ON_ONCE(1);
+- return 1;
+- }
+- i = 0;
+ do {
+- slot = req->start_slot + i;
+- if ((slot == DWC3_TRB_NUM - 1) &&
++ req = next_request(&dep->req_queued);
++ if (!req) {
++ WARN_ON_ONCE(1);
++ return 1;
++ }
++ i = 0;
++ do {
++ slot = req->start_slot + i;
++ if ((slot == DWC3_TRB_NUM - 1) &&
+ usb_endpoint_xfer_isoc(dep->endpoint.desc))
+- slot++;
+- slot %= DWC3_TRB_NUM;
+- trb = &dep->trb_pool[slot];
++ slot++;
++ slot %= DWC3_TRB_NUM;
++ trb = &dep->trb_pool[slot];
++
++ ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb,
++ event, status);
++ if (ret)
++ break;
++ } while (++i < req->request.num_mapped_sgs);
++
++ dwc3_gadget_giveback(dep, req, status);
+
+- ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb,
+- event, status);
+ if (ret)
+ break;
+- } while (++i < req->request.num_mapped_sgs);
+-
+- dwc3_gadget_giveback(dep, req, status);
++ } while (1);
+
+ if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
+ list_empty(&dep->req_queued)) {
+@@ -2709,12 +2714,34 @@ int dwc3_gadget_init(struct dwc3 *dwc)
+ }
+
+ dwc->gadget.ops = &dwc3_gadget_ops;
+- dwc->gadget.max_speed = USB_SPEED_SUPER;
+ dwc->gadget.speed = USB_SPEED_UNKNOWN;
+ dwc->gadget.sg_supported = true;
+ dwc->gadget.name = "dwc3-gadget";
+
+ /*
++ * FIXME We might be setting max_speed to <SUPER, however versions
++ * <2.20a of dwc3 have an issue with metastability (documented
++ * elsewhere in this driver) which tells us we can't set max speed to
++ * anything lower than SUPER.
++ *
++ * Because gadget.max_speed is only used by composite.c and function
++ * drivers (i.e. it won't go into dwc3's registers) we are allowing this
++ * to happen so we avoid sending SuperSpeed Capability descriptor
++ * together with our BOS descriptor as that could confuse host into
++ * thinking we can handle super speed.
++ *
++ * Note that, in fact, we won't even support GetBOS requests when speed
++ * is less than super speed because we don't have means, yet, to tell
++ * composite.c that we are USB 2.0 + LPM ECN.
++ */
++ if (dwc->revision < DWC3_REVISION_220A)
++ dwc3_trace(trace_dwc3_gadget,
++ "Changing max_speed on rev %08x\n",
++ dwc->revision);
++
++ dwc->gadget.max_speed = dwc->maximum_speed;
++
++ /*
+ * Per databook, DWC3 needs buffer size to be aligned to MaxPacketSize
+ * on ep out.
+ */
+diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
+index 351d48550c33..d6ca3697d3c8 100644
+--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
++++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
+@@ -1634,7 +1634,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
+ spin_lock(&udc->lock);
+
+ int_enb = usba_int_enb_get(udc);
+- status = usba_readl(udc, INT_STA) & int_enb;
++ status = usba_readl(udc, INT_STA) & (int_enb | USBA_HIGH_SPEED);
+ DBG(DBG_INT, "irq, status=%#08x\n", status);
+
+ if (status & USBA_DET_SUSPEND) {
+diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
+index bfcbb9aa8816..ee8d5faa0194 100644
+--- a/drivers/usb/host/ehci-orion.c
++++ b/drivers/usb/host/ehci-orion.c
+@@ -224,7 +224,8 @@ static int ehci_orion_drv_probe(struct platform_device *pdev)
+ priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
+ if (IS_ERR(priv->phy)) {
+ err = PTR_ERR(priv->phy);
+- goto err_phy_get;
++ if (err != -ENOSYS)
++ goto err_phy_get;
+ } else {
+ err = phy_init(priv->phy);
+ if (err)
+diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
+index 26f62b2b33f8..1e6d7579709e 100644
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -175,6 +175,16 @@ int xhci_reset(struct xhci_hcd *xhci)
+ command |= CMD_RESET;
+ writel(command, &xhci->op_regs->command);
+
++ /* Existing Intel xHCI controllers require a delay of 1 mS,
++ * after setting the CMD_RESET bit, and before accessing any
++ * HC registers. This allows the HC to complete the
++ * reset operation and be ready for HC register access.
++ * Without this delay, the subsequent HC register access,
++ * may result in a system hang very rarely.
++ */
++ if (xhci->quirks & XHCI_INTEL_HOST)
++ udelay(1000);
++
+ ret = xhci_handshake(&xhci->op_regs->command,
+ CMD_RESET, 0, 10 * 1000 * 1000);
+ if (ret)
+diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
+index 6dca3d794ced..9f65d8477372 100644
+--- a/drivers/usb/musb/musb_core.c
++++ b/drivers/usb/musb/musb_core.c
+@@ -132,7 +132,7 @@ static inline struct musb *dev_to_musb(struct device *dev)
+ /*-------------------------------------------------------------------------*/
+
+ #ifndef CONFIG_BLACKFIN
+-static int musb_ulpi_read(struct usb_phy *phy, u32 offset)
++static int musb_ulpi_read(struct usb_phy *phy, u32 reg)
+ {
+ void __iomem *addr = phy->io_priv;
+ int i = 0;
+@@ -151,7 +151,7 @@ static int musb_ulpi_read(struct usb_phy *phy, u32 offset)
+ * ULPICarKitControlDisableUTMI after clearing POWER_SUSPENDM.
+ */
+
+- musb_writeb(addr, MUSB_ULPI_REG_ADDR, (u8)offset);
++ musb_writeb(addr, MUSB_ULPI_REG_ADDR, (u8)reg);
+ musb_writeb(addr, MUSB_ULPI_REG_CONTROL,
+ MUSB_ULPI_REG_REQ | MUSB_ULPI_RDN_WR);
+
+@@ -176,7 +176,7 @@ out:
+ return ret;
+ }
+
+-static int musb_ulpi_write(struct usb_phy *phy, u32 offset, u32 data)
++static int musb_ulpi_write(struct usb_phy *phy, u32 val, u32 reg)
+ {
+ void __iomem *addr = phy->io_priv;
+ int i = 0;
+@@ -191,8 +191,8 @@ static int musb_ulpi_write(struct usb_phy *phy, u32 offset, u32 data)
+ power &= ~MUSB_POWER_SUSPENDM;
+ musb_writeb(addr, MUSB_POWER, power);
+
+- musb_writeb(addr, MUSB_ULPI_REG_ADDR, (u8)offset);
+- musb_writeb(addr, MUSB_ULPI_REG_DATA, (u8)data);
++ musb_writeb(addr, MUSB_ULPI_REG_ADDR, (u8)reg);
++ musb_writeb(addr, MUSB_ULPI_REG_DATA, (u8)val);
+ musb_writeb(addr, MUSB_ULPI_REG_CONTROL, MUSB_ULPI_REG_REQ);
+
+ while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL)
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 7c8eb4c4c175..4021846139c9 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -162,6 +162,7 @@ static void option_instat_callback(struct urb *urb);
+ #define NOVATELWIRELESS_PRODUCT_HSPA_EMBEDDED_HIGHSPEED 0x9001
+ #define NOVATELWIRELESS_PRODUCT_E362 0x9010
+ #define NOVATELWIRELESS_PRODUCT_E371 0x9011
++#define NOVATELWIRELESS_PRODUCT_U620L 0x9022
+ #define NOVATELWIRELESS_PRODUCT_G2 0xA010
+ #define NOVATELWIRELESS_PRODUCT_MC551 0xB001
+
+@@ -357,6 +358,7 @@ static void option_instat_callback(struct urb *urb);
+ /* This is the 4G XS Stick W14 a.k.a. Mobilcom Debitel Surf-Stick *
+ * It seems to contain a Qualcomm QSC6240/6290 chipset */
+ #define FOUR_G_SYSTEMS_PRODUCT_W14 0x9603
++#define FOUR_G_SYSTEMS_PRODUCT_W100 0x9b01
+
+ /* iBall 3.5G connect wireless modem */
+ #define IBALL_3_5G_CONNECT 0x9605
+@@ -522,6 +524,11 @@ static const struct option_blacklist_info four_g_w14_blacklist = {
+ .sendsetup = BIT(0) | BIT(1),
+ };
+
++static const struct option_blacklist_info four_g_w100_blacklist = {
++ .sendsetup = BIT(1) | BIT(2),
++ .reserved = BIT(3),
++};
++
+ static const struct option_blacklist_info alcatel_x200_blacklist = {
+ .sendsetup = BIT(0) | BIT(1),
+ .reserved = BIT(4),
+@@ -1060,6 +1067,7 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC551, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_E362, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_E371, 0xff, 0xff, 0xff) },
++ { USB_DEVICE_AND_INTERFACE_INFO(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U620L, 0xff, 0x00, 0x00) },
+
+ { USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01) },
+ { USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01A) },
+@@ -1653,6 +1661,9 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(LONGCHEER_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W14),
+ .driver_info = (kernel_ulong_t)&four_g_w14_blacklist
+ },
++ { USB_DEVICE(LONGCHEER_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W100),
++ .driver_info = (kernel_ulong_t)&four_g_w100_blacklist
++ },
+ { USB_DEVICE_INTERFACE_CLASS(LONGCHEER_VENDOR_ID, SPEEDUP_PRODUCT_SU9800, 0xff) },
+ { USB_DEVICE(LONGCHEER_VENDOR_ID, ZOOM_PRODUCT_4597) },
+ { USB_DEVICE(LONGCHEER_VENDOR_ID, IBALL_3_5G_CONNECT) },
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index f49d262e926b..514fa91cf74e 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -22,6 +22,8 @@
+ #define DRIVER_AUTHOR "Qualcomm Inc"
+ #define DRIVER_DESC "Qualcomm USB Serial driver"
+
++#define QUECTEL_EC20_PID 0x9215
++
+ /* standard device layouts supported by this driver */
+ enum qcserial_layouts {
+ QCSERIAL_G2K = 0, /* Gobi 2000 */
+@@ -169,6 +171,38 @@ static const struct usb_device_id id_table[] = {
+ };
+ MODULE_DEVICE_TABLE(usb, id_table);
+
++static int handle_quectel_ec20(struct device *dev, int ifnum)
++{
++ int altsetting = 0;
++
++ /*
++ * Quectel EC20 Mini PCIe LTE module layout:
++ * 0: DM/DIAG (use libqcdm from ModemManager for communication)
++ * 1: NMEA
++ * 2: AT-capable modem port
++ * 3: Modem interface
++ * 4: NDIS
++ */
++ switch (ifnum) {
++ case 0:
++ dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n");
++ break;
++ case 1:
++ dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n");
++ break;
++ case 2:
++ case 3:
++ dev_dbg(dev, "Quectel EC20 Modem port found\n");
++ break;
++ case 4:
++ /* Don't claim the QMI/net interface */
++ altsetting = -1;
++ break;
++ }
++
++ return altsetting;
++}
++
+ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
+ {
+ struct usb_host_interface *intf = serial->interface->cur_altsetting;
+@@ -178,6 +212,10 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
+ __u8 ifnum;
+ int altsetting = -1;
+
++ /* we only support vendor specific functions */
++ if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
++ goto done;
++
+ nintf = serial->dev->actconfig->desc.bNumInterfaces;
+ dev_dbg(dev, "Num Interfaces = %d\n", nintf);
+ ifnum = intf->desc.bInterfaceNumber;
+@@ -237,6 +275,12 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
+ altsetting = -1;
+ break;
+ case QCSERIAL_G2K:
++ /* handle non-standard layouts */
++ if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) {
++ altsetting = handle_quectel_ec20(dev, ifnum);
++ goto done;
++ }
++
+ /*
+ * Gobi 2K+ USB layout:
+ * 0: QMI/net
+@@ -297,29 +341,39 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
+ break;
+ case QCSERIAL_HWI:
+ /*
+- * Huawei layout:
+- * 0: AT-capable modem port
+- * 1: DM/DIAG
+- * 2: AT-capable modem port
+- * 3: CCID-compatible PCSC interface
+- * 4: QMI/net
+- * 5: NMEA
++ * Huawei devices map functions by subclass + protocol
++ * instead of interface numbers. The protocol identify
++ * a specific function, while the subclass indicate a
++ * specific firmware source
++ *
++ * This is a blacklist of functions known to be
++ * non-serial. The rest are assumed to be serial and
++ * will be handled by this driver
+ */
+- switch (ifnum) {
+- case 0:
+- case 2:
+- dev_dbg(dev, "Modem port found\n");
+- break;
+- case 1:
+- dev_dbg(dev, "DM/DIAG interface found\n");
+- break;
+- case 5:
+- dev_dbg(dev, "NMEA GPS interface found\n");
+- break;
+- default:
+- /* don't claim any unsupported interface */
++ switch (intf->desc.bInterfaceProtocol) {
++ /* QMI combined (qmi_wwan) */
++ case 0x07:
++ case 0x37:
++ case 0x67:
++ /* QMI data (qmi_wwan) */
++ case 0x08:
++ case 0x38:
++ case 0x68:
++ /* QMI control (qmi_wwan) */
++ case 0x09:
++ case 0x39:
++ case 0x69:
++ /* NCM like (huawei_cdc_ncm) */
++ case 0x16:
++ case 0x46:
++ case 0x76:
+ altsetting = -1;
+ break;
++ default:
++ dev_dbg(dev, "Huawei type serial port found (%02x/%02x/%02x)\n",
++ intf->desc.bInterfaceClass,
++ intf->desc.bInterfaceSubClass,
++ intf->desc.bInterfaceProtocol);
+ }
+ break;
+ default:
+diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
+index e9da41d9fe7f..2694df2f4559 100644
+--- a/drivers/usb/serial/ti_usb_3410_5052.c
++++ b/drivers/usb/serial/ti_usb_3410_5052.c
+@@ -159,6 +159,7 @@ static const struct usb_device_id ti_id_table_3410[] = {
+ { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
+ { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
+ { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
++ { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
+ { } /* terminator */
+ };
+
+@@ -191,6 +192,7 @@ static const struct usb_device_id ti_id_table_combined[] = {
+ { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
+ { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
+ { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
++ { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
+ { } /* terminator */
+ };
+
+diff --git a/drivers/usb/serial/ti_usb_3410_5052.h b/drivers/usb/serial/ti_usb_3410_5052.h
+index 4a2423e84d55..98f35c656c02 100644
+--- a/drivers/usb/serial/ti_usb_3410_5052.h
++++ b/drivers/usb/serial/ti_usb_3410_5052.h
+@@ -56,6 +56,10 @@
+ #define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID
+ #define ABBOTT_STRIP_PORT_ID 0x3420
+
++/* Honeywell vendor and product IDs */
++#define HONEYWELL_VENDOR_ID 0x10ac
++#define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */
++
+ /* Commands */
+ #define TI_GET_VERSION 0x01
+ #define TI_GET_PORT_STATUS 0x02
+diff --git a/fs/proc/array.c b/fs/proc/array.c
+index fd02a9ebfc30..70f9c4cba31f 100644
+--- a/fs/proc/array.c
++++ b/fs/proc/array.c
+@@ -364,7 +364,7 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
+ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task, int whole)
+ {
+- unsigned long vsize, eip, esp, wchan = ~0UL;
++ unsigned long vsize, eip, esp, wchan = 0;
+ int priority, nice;
+ int tty_pgrp = -1, tty_nr = 0;
+ sigset_t sigign, sigcatch;
+@@ -496,7 +496,19 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
+ seq_put_decimal_ull(m, ' ', task->blocked.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, ' ', sigign.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, ' ', sigcatch.sig[0] & 0x7fffffffUL);
+- seq_put_decimal_ull(m, ' ', wchan);
++
++ /*
++ * We used to output the absolute kernel address, but that's an
++ * information leak - so instead we show a 0/1 flag here, to signal
++ * to user-space whether there's a wchan field in /proc/PID/wchan.
++ *
++ * This works with older implementations of procps as well.
++ */
++ if (wchan)
++ seq_puts(m, " 1");
++ else
++ seq_puts(m, " 0");
++
+ seq_put_decimal_ull(m, ' ', 0);
+ seq_put_decimal_ull(m, ' ', 0);
+ seq_put_decimal_ll(m, ' ', task->exit_signal);
+diff --git a/fs/proc/base.c b/fs/proc/base.c
+index 093ca14f5701..fcdeb1eb3921 100644
+--- a/fs/proc/base.c
++++ b/fs/proc/base.c
+@@ -238,13 +238,10 @@ static int proc_pid_wchan(struct seq_file *m, struct pid_namespace *ns,
+
+ wchan = get_wchan(task);
+
+- if (lookup_symbol_name(wchan, symname) < 0) {
+- if (!ptrace_may_access(task, PTRACE_MODE_READ))
+- return 0;
+- seq_printf(m, "%lu", wchan);
+- } else {
++ if (wchan && ptrace_may_access(task, PTRACE_MODE_READ) && !lookup_symbol_name(wchan, symname))
+ seq_printf(m, "%s", symname);
+- }
++ else
++ seq_putc(m, '0');
+
+ return 0;
+ }
+diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
+index ad45054309a0..29a57a5b7cee 100644
+--- a/include/linux/kvm_host.h
++++ b/include/linux/kvm_host.h
+@@ -423,6 +423,17 @@ static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
+ (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
+ idx++)
+
++static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
++{
++ struct kvm_vcpu *vcpu;
++ int i;
++
++ kvm_for_each_vcpu(i, vcpu, kvm)
++ if (vcpu->vcpu_id == id)
++ return vcpu;
++ return NULL;
++}
++
+ #define kvm_for_each_memslot(memslot, slots) \
+ for (memslot = &slots->memslots[0]; \
+ memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
+diff --git a/include/linux/tty.h b/include/linux/tty.h
+index d76631f615c2..9580c09afdbe 100644
+--- a/include/linux/tty.h
++++ b/include/linux/tty.h
+@@ -605,7 +605,7 @@ extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
+
+ /* tty_audit.c */
+ #ifdef CONFIG_AUDIT
+-extern void tty_audit_add_data(struct tty_struct *tty, unsigned char *data,
++extern void tty_audit_add_data(struct tty_struct *tty, const void *data,
+ size_t size, unsigned icanon);
+ extern void tty_audit_exit(void);
+ extern void tty_audit_fork(struct signal_struct *sig);
+@@ -613,8 +613,8 @@ extern void tty_audit_tiocsti(struct tty_struct *tty, char ch);
+ extern void tty_audit_push(struct tty_struct *tty);
+ extern int tty_audit_push_current(void);
+ #else
+-static inline void tty_audit_add_data(struct tty_struct *tty,
+- unsigned char *data, size_t size, unsigned icanon)
++static inline void tty_audit_add_data(struct tty_struct *tty, const void *data,
++ size_t size, unsigned icanon)
+ {
+ }
+ static inline void tty_audit_tiocsti(struct tty_struct *tty, char ch)
+diff --git a/include/net/inet_common.h b/include/net/inet_common.h
+index 4a92423eefa5..82669da2540c 100644
+--- a/include/net/inet_common.h
++++ b/include/net/inet_common.h
+@@ -41,7 +41,8 @@ int inet_recv_error(struct sock *sk, struct msghdr *msg, int len,
+
+ static inline void inet_ctl_sock_destroy(struct sock *sk)
+ {
+- sk_release_kernel(sk);
++ if (sk)
++ sk_release_kernel(sk);
+ }
+
+ #endif
+diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
+index 9070dfd6b4ad..4a0015e16d4f 100644
+--- a/net/bluetooth/hidp/core.c
++++ b/net/bluetooth/hidp/core.c
+@@ -401,6 +401,20 @@ static void hidp_idle_timeout(unsigned long arg)
+ {
+ struct hidp_session *session = (struct hidp_session *) arg;
+
++ /* The HIDP user-space API only contains calls to add and remove
++ * devices. There is no way to forward events of any kind. Therefore,
++ * we have to forcefully disconnect a device on idle-timeouts. This is
++ * unfortunate and weird API design, but it is spec-compliant and
++ * required for backwards-compatibility. Hence, on idle-timeout, we
++ * signal driver-detach events, so poll() will be woken up with an
++ * error-condition on both sockets.
++ */
++
++ session->intr_sock->sk->sk_err = EUNATCH;
++ session->ctrl_sock->sk->sk_err = EUNATCH;
++ wake_up_interruptible(sk_sleep(session->intr_sock->sk));
++ wake_up_interruptible(sk_sleep(session->ctrl_sock->sk));
++
+ hidp_session_terminate(session);
+ }
+
+diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
+index 7fd87e7135b5..58d60cbbc33f 100644
+--- a/net/bluetooth/mgmt.c
++++ b/net/bluetooth/mgmt.c
+@@ -2962,6 +2962,11 @@ static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
+ } else {
+ u8 addr_type;
+
++ if (cp->addr.type == BDADDR_LE_PUBLIC)
++ addr_type = ADDR_LE_DEV_PUBLIC;
++ else
++ addr_type = ADDR_LE_DEV_RANDOM;
++
+ conn = hci_conn_hash_lookup_ba(hdev, LE_LINK,
+ &cp->addr.bdaddr);
+ if (conn) {
+@@ -2977,13 +2982,10 @@ static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
+ */
+ if (!cp->disconnect)
+ conn = NULL;
++ } else {
++ hci_conn_params_del(hdev, &cp->addr.bdaddr, addr_type);
+ }
+
+- if (cp->addr.type == BDADDR_LE_PUBLIC)
+- addr_type = ADDR_LE_DEV_PUBLIC;
+- else
+- addr_type = ADDR_LE_DEV_RANDOM;
+-
+ hci_remove_irk(hdev, &cp->addr.bdaddr, addr_type);
+
+ err = hci_remove_ltk(hdev, &cp->addr.bdaddr, addr_type);
+diff --git a/net/core/dst.c b/net/core/dst.c
+index e956ce6d1378..f8db4032d45a 100644
+--- a/net/core/dst.c
++++ b/net/core/dst.c
+@@ -285,7 +285,7 @@ void dst_release(struct dst_entry *dst)
+
+ newrefcnt = atomic_dec_return(&dst->__refcnt);
+ WARN_ON(newrefcnt < 0);
+- if (unlikely(dst->flags & DST_NOCACHE) && !newrefcnt)
++ if (!newrefcnt && unlikely(dst->flags & DST_NOCACHE))
+ call_rcu(&dst->rcu_head, dst_destroy_rcu);
+ }
+ }
+diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
+index 0ca933db1b41..93b802984819 100644
+--- a/net/ipv4/fib_trie.c
++++ b/net/ipv4/fib_trie.c
+@@ -1547,7 +1547,7 @@ static struct key_vector *leaf_walk_rcu(struct key_vector **tn, t_key key)
+ do {
+ /* record parent and next child index */
+ pn = n;
+- cindex = key ? get_index(key, pn) : 0;
++ cindex = (key > pn->key) ? get_index(key, pn) : 0;
+
+ if (cindex >> pn->bits)
+ break;
+diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
+index 5aa46d4b44ef..5a8ee3282550 100644
+--- a/net/ipv4/gre_offload.c
++++ b/net/ipv4/gre_offload.c
+@@ -36,7 +36,8 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
+ SKB_GSO_TCP_ECN |
+ SKB_GSO_GRE |
+ SKB_GSO_GRE_CSUM |
+- SKB_GSO_IPIP)))
++ SKB_GSO_IPIP |
++ SKB_GSO_SIT)))
+ goto out;
+
+ if (!skb->encapsulation)
+diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
+index 3a2c0162c3ba..df28693f32e1 100644
+--- a/net/ipv4/ipmr.c
++++ b/net/ipv4/ipmr.c
+@@ -1683,8 +1683,8 @@ static inline int ipmr_forward_finish(struct sock *sk, struct sk_buff *skb)
+ {
+ struct ip_options *opt = &(IPCB(skb)->opt);
+
+- IP_INC_STATS_BH(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
+- IP_ADD_STATS_BH(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_OUTOCTETS, skb->len);
++ IP_INC_STATS(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
++ IP_ADD_STATS(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_OUTOCTETS, skb->len);
+
+ if (unlikely(opt->optlen))
+ ip_forward_options(skb);
+@@ -1746,7 +1746,7 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
+ * to blackhole.
+ */
+
+- IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
++ IP_INC_STATS(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
+ ip_rt_put(rt);
+ goto out_free;
+ }
+diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
+index c3852a7ff3c7..f0e829735968 100644
+--- a/net/ipv4/sysctl_net_ipv4.c
++++ b/net/ipv4/sysctl_net_ipv4.c
+@@ -45,10 +45,10 @@ static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX };
+ /* Update system visible IP port range */
+ static void set_local_port_range(struct net *net, int range[2])
+ {
+- write_seqlock(&net->ipv4.ip_local_ports.lock);
++ write_seqlock_bh(&net->ipv4.ip_local_ports.lock);
+ net->ipv4.ip_local_ports.range[0] = range[0];
+ net->ipv4.ip_local_ports.range[1] = range[1];
+- write_sequnlock(&net->ipv4.ip_local_ports.lock);
++ write_sequnlock_bh(&net->ipv4.ip_local_ports.lock);
+ }
+
+ /* Validate changes from /proc interface. */
+diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
+index 37b70e82bff8..fd3aa6148dd1 100644
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -411,6 +411,7 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
+ if (err) {
+ ipv6_mc_destroy_dev(ndev);
+ del_timer(&ndev->regen_timer);
++ snmp6_unregister_dev(ndev);
+ goto err_release;
+ }
+ /* protected by rtnl_lock */
+diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
+index ac35a28599be..85c4b2fff504 100644
+--- a/net/ipv6/sit.c
++++ b/net/ipv6/sit.c
+@@ -1394,34 +1394,20 @@ static int ipip6_tunnel_init(struct net_device *dev)
+ return 0;
+ }
+
+-static int __net_init ipip6_fb_tunnel_init(struct net_device *dev)
++static void __net_init ipip6_fb_tunnel_init(struct net_device *dev)
+ {
+ struct ip_tunnel *tunnel = netdev_priv(dev);
+ struct iphdr *iph = &tunnel->parms.iph;
+ struct net *net = dev_net(dev);
+ struct sit_net *sitn = net_generic(net, sit_net_id);
+
+- tunnel->dev = dev;
+- tunnel->net = dev_net(dev);
+-
+ iph->version = 4;
+ iph->protocol = IPPROTO_IPV6;
+ iph->ihl = 5;
+ iph->ttl = 64;
+
+- dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
+- if (!dev->tstats)
+- return -ENOMEM;
+-
+- tunnel->dst_cache = alloc_percpu(struct ip_tunnel_dst);
+- if (!tunnel->dst_cache) {
+- free_percpu(dev->tstats);
+- return -ENOMEM;
+- }
+-
+ dev_hold(dev);
+ rcu_assign_pointer(sitn->tunnels_wc[0], tunnel);
+- return 0;
+ }
+
+ static int ipip6_validate(struct nlattr *tb[], struct nlattr *data[])
+@@ -1831,23 +1817,19 @@ static int __net_init sit_init_net(struct net *net)
+ */
+ sitn->fb_tunnel_dev->features |= NETIF_F_NETNS_LOCAL;
+
+- err = ipip6_fb_tunnel_init(sitn->fb_tunnel_dev);
+- if (err)
+- goto err_dev_free;
+-
+- ipip6_tunnel_clone_6rd(sitn->fb_tunnel_dev, sitn);
+ err = register_netdev(sitn->fb_tunnel_dev);
+ if (err)
+ goto err_reg_dev;
+
++ ipip6_tunnel_clone_6rd(sitn->fb_tunnel_dev, sitn);
++ ipip6_fb_tunnel_init(sitn->fb_tunnel_dev);
++
+ t = netdev_priv(sitn->fb_tunnel_dev);
+
+ strcpy(t->parms.name, sitn->fb_tunnel_dev->name);
+ return 0;
+
+ err_reg_dev:
+- dev_put(sitn->fb_tunnel_dev);
+-err_dev_free:
+ ipip6_dev_free(sitn->fb_tunnel_dev);
+ err_alloc_dev:
+ return err;
+diff --git a/net/irda/irlmp.c b/net/irda/irlmp.c
+index a26c401ef4a4..43964594aa12 100644
+--- a/net/irda/irlmp.c
++++ b/net/irda/irlmp.c
+@@ -1839,7 +1839,7 @@ static void *irlmp_seq_hb_idx(struct irlmp_iter_state *iter, loff_t *off)
+ for (element = hashbin_get_first(iter->hashbin);
+ element != NULL;
+ element = hashbin_get_next(iter->hashbin)) {
+- if (!off || *off-- == 0) {
++ if (!off || (*off)-- == 0) {
+ /* NB: hashbin left locked */
+ return element;
+ }
+diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
+index 26053bf2faa8..a93906103f8b 100644
+--- a/net/mac80211/mlme.c
++++ b/net/mac80211/mlme.c
+@@ -3340,7 +3340,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
+
+ if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
+ ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
+- int sig = ifmgd->ave_beacon_signal;
++ int sig = ifmgd->ave_beacon_signal / 16;
+ int last_sig = ifmgd->last_ave_beacon_signal;
+ struct ieee80211_event event = {
+ .type = RSSI_EVENT,
+@@ -4946,6 +4946,25 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
+ return 0;
+ }
+
++ if (ifmgd->assoc_data &&
++ ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
++ sdata_info(sdata,
++ "aborting association with %pM by local choice (Reason: %u=%s)\n",
++ req->bssid, req->reason_code,
++ ieee80211_get_reason_code_string(req->reason_code));
++
++ drv_mgd_prepare_tx(sdata->local, sdata);
++ ieee80211_send_deauth_disassoc(sdata, req->bssid,
++ IEEE80211_STYPE_DEAUTH,
++ req->reason_code, tx,
++ frame_buf);
++ ieee80211_destroy_assoc_data(sdata, false);
++ ieee80211_report_disconnect(sdata, frame_buf,
++ sizeof(frame_buf), true,
++ req->reason_code);
++ return 0;
++ }
++
+ if (ifmgd->associated &&
+ ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
+ sdata_info(sdata,
+diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
+index 4c2e7690226a..ab19f3c2104d 100644
+--- a/net/mac80211/trace.h
++++ b/net/mac80211/trace.h
+@@ -33,11 +33,11 @@
+ __field(u32, chan_width) \
+ __field(u32, center_freq1) \
+ __field(u32, center_freq2)
+-#define CHANDEF_ASSIGN(c) \
+- __entry->control_freq = (c)->chan ? (c)->chan->center_freq : 0; \
+- __entry->chan_width = (c)->width; \
+- __entry->center_freq1 = (c)->center_freq1; \
+- __entry->center_freq2 = (c)->center_freq2;
++#define CHANDEF_ASSIGN(c) \
++ __entry->control_freq = (c) ? ((c)->chan ? (c)->chan->center_freq : 0) : 0; \
++ __entry->chan_width = (c) ? (c)->width : 0; \
++ __entry->center_freq1 = (c) ? (c)->center_freq1 : 0; \
++ __entry->center_freq2 = (c) ? (c)->center_freq2 : 0;
+ #define CHANDEF_PR_FMT " control:%d MHz width:%d center: %d/%d MHz"
+ #define CHANDEF_PR_ARG __entry->control_freq, __entry->chan_width, \
+ __entry->center_freq1, __entry->center_freq2
+diff --git a/net/mac80211/util.c b/net/mac80211/util.c
+index b864ebc6ab8f..67fec9ba97fc 100644
+--- a/net/mac80211/util.c
++++ b/net/mac80211/util.c
+@@ -2984,6 +2984,13 @@ ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
+ if (end > 0)
+ return false;
+
++ /* One shot NOA */
++ if (data->count[i] == 1)
++ return false;
++
++ if (data->desc[i].interval == 0)
++ return false;
++
+ /* End time is in the past, check for repetitions */
+ skip = DIV_ROUND_UP(-end, data->desc[i].interval);
+ if (data->count[i] < 255) {
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index d139c43ac6e5..0d6038c87bef 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -1118,6 +1118,7 @@ static int netlink_insert(struct sock *sk, u32 portid)
+ if (err == -EEXIST)
+ err = -EADDRINUSE;
+ sock_put(sk);
++ goto err;
+ }
+
+ /* We need to ensure that the socket is hashed and visible. */
+diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
+index b33fed6d1584..91ecbd1c2ec1 100644
+--- a/net/nfc/nci/hci.c
++++ b/net/nfc/nci/hci.c
+@@ -101,6 +101,20 @@ struct nci_hcp_packet {
+ #define NCI_HCP_MSG_GET_CMD(header) (header & 0x3f)
+ #define NCI_HCP_MSG_GET_PIPE(header) (header & 0x7f)
+
++static int nci_hci_result_to_errno(u8 result)
++{
++ switch (result) {
++ case NCI_HCI_ANY_OK:
++ return 0;
++ case NCI_HCI_ANY_E_REG_PAR_UNKNOWN:
++ return -EOPNOTSUPP;
++ case NCI_HCI_ANY_E_TIMEOUT:
++ return -ETIME;
++ default:
++ return -1;
++ }
++}
++
+ /* HCI core */
+ static void nci_hci_reset_pipes(struct nci_hci_dev *hdev)
+ {
+@@ -146,18 +160,18 @@ static int nci_hci_send_data(struct nci_dev *ndev, u8 pipe,
+ if (!conn_info)
+ return -EPROTO;
+
+- skb = nci_skb_alloc(ndev, 2 + conn_info->max_pkt_payload_len +
++ i = 0;
++ skb = nci_skb_alloc(ndev, conn_info->max_pkt_payload_len +
+ NCI_DATA_HDR_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+- skb_reserve(skb, 2 + NCI_DATA_HDR_SIZE);
++ skb_reserve(skb, NCI_DATA_HDR_SIZE + 2);
+ *skb_push(skb, 1) = data_type;
+
+- i = 0;
+- len = conn_info->max_pkt_payload_len;
+-
+ do {
++ len = conn_info->max_pkt_payload_len;
++
+ /* If last packet add NCI_HFP_NO_CHAINING */
+ if (i + conn_info->max_pkt_payload_len -
+ (skb->len + 1) >= data_len) {
+@@ -177,9 +191,15 @@ static int nci_hci_send_data(struct nci_dev *ndev, u8 pipe,
+ return r;
+
+ i += len;
++
+ if (i < data_len) {
+- skb_trim(skb, 0);
+- skb_pull(skb, len);
++ skb = nci_skb_alloc(ndev,
++ conn_info->max_pkt_payload_len +
++ NCI_DATA_HDR_SIZE, GFP_KERNEL);
++ if (!skb)
++ return -ENOMEM;
++
++ skb_reserve(skb, NCI_DATA_HDR_SIZE + 1);
+ }
+ } while (i < data_len);
+
+@@ -212,7 +232,8 @@ int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate, u8 cmd,
+ const u8 *param, size_t param_len,
+ struct sk_buff **skb)
+ {
+- struct nci_conn_info *conn_info;
++ struct nci_hcp_message *message;
++ struct nci_conn_info *conn_info;
+ struct nci_data data;
+ int r;
+ u8 pipe = ndev->hci_dev->gate2pipe[gate];
+@@ -232,9 +253,15 @@ int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate, u8 cmd,
+
+ r = nci_request(ndev, nci_hci_send_data_req, (unsigned long)&data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
+-
+- if (r == NCI_STATUS_OK && skb)
+- *skb = conn_info->rx_skb;
++ if (r == NCI_STATUS_OK) {
++ message = (struct nci_hcp_message *)conn_info->rx_skb->data;
++ r = nci_hci_result_to_errno(
++ NCI_HCP_MSG_GET_CMD(message->header));
++ skb_pull(conn_info->rx_skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
++
++ if (!r && skb)
++ *skb = conn_info->rx_skb;
++ }
+
+ return r;
+ }
+@@ -328,9 +355,6 @@ static void nci_hci_resp_received(struct nci_dev *ndev, u8 pipe,
+ struct nci_conn_info *conn_info;
+ u8 status = result;
+
+- if (result != NCI_HCI_ANY_OK)
+- goto exit;
+-
+ conn_info = ndev->hci_dev->conn_info;
+ if (!conn_info) {
+ status = NCI_STATUS_REJECTED;
+@@ -340,7 +364,7 @@ static void nci_hci_resp_received(struct nci_dev *ndev, u8 pipe,
+ conn_info->rx_skb = skb;
+
+ exit:
+- nci_req_complete(ndev, status);
++ nci_req_complete(ndev, NCI_STATUS_OK);
+ }
+
+ /* Receive hcp message for pipe, with type and cmd.
+@@ -378,7 +402,7 @@ static void nci_hci_msg_rx_work(struct work_struct *work)
+ u8 pipe, type, instruction;
+
+ while ((skb = skb_dequeue(&hdev->msg_rx_queue)) != NULL) {
+- pipe = skb->data[0];
++ pipe = NCI_HCP_MSG_GET_PIPE(skb->data[0]);
+ skb_pull(skb, NCI_HCI_HCP_PACKET_HEADER_LEN);
+ message = (struct nci_hcp_message *)skb->data;
+ type = NCI_HCP_MSG_GET_TYPE(message->header);
+@@ -395,7 +419,7 @@ void nci_hci_data_received_cb(void *context,
+ {
+ struct nci_dev *ndev = (struct nci_dev *)context;
+ struct nci_hcp_packet *packet;
+- u8 pipe, type, instruction;
++ u8 pipe, type;
+ struct sk_buff *hcp_skb;
+ struct sk_buff *frag_skb;
+ int msg_len;
+@@ -415,7 +439,7 @@ void nci_hci_data_received_cb(void *context,
+
+ /* it's the last fragment. Does it need re-aggregation? */
+ if (skb_queue_len(&ndev->hci_dev->rx_hcp_frags)) {
+- pipe = packet->header & NCI_HCI_FRAGMENT;
++ pipe = NCI_HCP_MSG_GET_PIPE(packet->header);
+ skb_queue_tail(&ndev->hci_dev->rx_hcp_frags, skb);
+
+ msg_len = 0;
+@@ -434,7 +458,7 @@ void nci_hci_data_received_cb(void *context,
+ *skb_put(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN) = pipe;
+
+ skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
+- msg_len = frag_skb->len - NCI_HCI_HCP_PACKET_HEADER_LEN;
++ msg_len = frag_skb->len - NCI_HCI_HCP_PACKET_HEADER_LEN;
+ memcpy(skb_put(hcp_skb, msg_len), frag_skb->data +
+ NCI_HCI_HCP_PACKET_HEADER_LEN, msg_len);
+ }
+@@ -452,11 +476,10 @@ void nci_hci_data_received_cb(void *context,
+ packet = (struct nci_hcp_packet *)hcp_skb->data;
+ type = NCI_HCP_MSG_GET_TYPE(packet->message.header);
+ if (type == NCI_HCI_HCP_RESPONSE) {
+- pipe = packet->header;
+- instruction = NCI_HCP_MSG_GET_CMD(packet->message.header);
+- skb_pull(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN +
+- NCI_HCI_HCP_MESSAGE_HEADER_LEN);
+- nci_hci_hcp_message_rx(ndev, pipe, type, instruction, hcp_skb);
++ pipe = NCI_HCP_MSG_GET_PIPE(packet->header);
++ skb_pull(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN);
++ nci_hci_hcp_message_rx(ndev, pipe, type,
++ NCI_STATUS_OK, hcp_skb);
+ } else {
+ skb_queue_tail(&ndev->hci_dev->msg_rx_queue, hcp_skb);
+ schedule_work(&ndev->hci_dev->msg_rx_work);
+@@ -488,6 +511,7 @@ EXPORT_SYMBOL(nci_hci_open_pipe);
+ int nci_hci_set_param(struct nci_dev *ndev, u8 gate, u8 idx,
+ const u8 *param, size_t param_len)
+ {
++ struct nci_hcp_message *message;
+ struct nci_conn_info *conn_info;
+ struct nci_data data;
+ int r;
+@@ -520,6 +544,12 @@ int nci_hci_set_param(struct nci_dev *ndev, u8 gate, u8 idx,
+ r = nci_request(ndev, nci_hci_send_data_req,
+ (unsigned long)&data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
++ if (r == NCI_STATUS_OK) {
++ message = (struct nci_hcp_message *)conn_info->rx_skb->data;
++ r = nci_hci_result_to_errno(
++ NCI_HCP_MSG_GET_CMD(message->header));
++ skb_pull(conn_info->rx_skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
++ }
+
+ kfree(tmp);
+ return r;
+@@ -529,6 +559,7 @@ EXPORT_SYMBOL(nci_hci_set_param);
+ int nci_hci_get_param(struct nci_dev *ndev, u8 gate, u8 idx,
+ struct sk_buff **skb)
+ {
++ struct nci_hcp_message *message;
+ struct nci_conn_info *conn_info;
+ struct nci_data data;
+ int r;
+@@ -553,8 +584,15 @@ int nci_hci_get_param(struct nci_dev *ndev, u8 gate, u8 idx,
+ r = nci_request(ndev, nci_hci_send_data_req, (unsigned long)&data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
+
+- if (r == NCI_STATUS_OK)
+- *skb = conn_info->rx_skb;
++ if (r == NCI_STATUS_OK) {
++ message = (struct nci_hcp_message *)conn_info->rx_skb->data;
++ r = nci_hci_result_to_errno(
++ NCI_HCP_MSG_GET_CMD(message->header));
++ skb_pull(conn_info->rx_skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
++
++ if (!r && skb)
++ *skb = conn_info->rx_skb;
++ }
+
+ return r;
+ }
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index e1ea5d43b01e..686e60187401 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -2686,22 +2686,40 @@ static int packet_release(struct socket *sock)
+ * Attach a packet hook.
+ */
+
+-static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto)
++static int packet_do_bind(struct sock *sk, const char *name, int ifindex,
++ __be16 proto)
+ {
+ struct packet_sock *po = pkt_sk(sk);
+ struct net_device *dev_curr;
+ __be16 proto_curr;
+ bool need_rehook;
++ struct net_device *dev = NULL;
++ int ret = 0;
++ bool unlisted = false;
+
+- if (po->fanout) {
+- if (dev)
+- dev_put(dev);
+-
++ if (po->fanout)
+ return -EINVAL;
+- }
+
+ lock_sock(sk);
+ spin_lock(&po->bind_lock);
++ rcu_read_lock();
++
++ if (name) {
++ dev = dev_get_by_name_rcu(sock_net(sk), name);
++ if (!dev) {
++ ret = -ENODEV;
++ goto out_unlock;
++ }
++ } else if (ifindex) {
++ dev = dev_get_by_index_rcu(sock_net(sk), ifindex);
++ if (!dev) {
++ ret = -ENODEV;
++ goto out_unlock;
++ }
++ }
++
++ if (dev)
++ dev_hold(dev);
+
+ proto_curr = po->prot_hook.type;
+ dev_curr = po->prot_hook.dev;
+@@ -2709,14 +2727,29 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto)
+ need_rehook = proto_curr != proto || dev_curr != dev;
+
+ if (need_rehook) {
+- unregister_prot_hook(sk, true);
++ if (po->running) {
++ rcu_read_unlock();
++ __unregister_prot_hook(sk, true);
++ rcu_read_lock();
++ dev_curr = po->prot_hook.dev;
++ if (dev)
++ unlisted = !dev_get_by_index_rcu(sock_net(sk),
++ dev->ifindex);
++ }
+
+ po->num = proto;
+ po->prot_hook.type = proto;
+- po->prot_hook.dev = dev;
+
+- po->ifindex = dev ? dev->ifindex : 0;
+- packet_cached_dev_assign(po, dev);
++ if (unlikely(unlisted)) {
++ dev_put(dev);
++ po->prot_hook.dev = NULL;
++ po->ifindex = -1;
++ packet_cached_dev_reset(po);
++ } else {
++ po->prot_hook.dev = dev;
++ po->ifindex = dev ? dev->ifindex : 0;
++ packet_cached_dev_assign(po, dev);
++ }
+ }
+ if (dev_curr)
+ dev_put(dev_curr);
+@@ -2724,7 +2757,7 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto)
+ if (proto == 0 || !need_rehook)
+ goto out_unlock;
+
+- if (!dev || (dev->flags & IFF_UP)) {
++ if (!unlisted && (!dev || (dev->flags & IFF_UP))) {
+ register_prot_hook(sk);
+ } else {
+ sk->sk_err = ENETDOWN;
+@@ -2733,9 +2766,10 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto)
+ }
+
+ out_unlock:
++ rcu_read_unlock();
+ spin_unlock(&po->bind_lock);
+ release_sock(sk);
+- return 0;
++ return ret;
+ }
+
+ /*
+@@ -2747,8 +2781,6 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr,
+ {
+ struct sock *sk = sock->sk;
+ char name[15];
+- struct net_device *dev;
+- int err = -ENODEV;
+
+ /*
+ * Check legality
+@@ -2758,19 +2790,13 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr,
+ return -EINVAL;
+ strlcpy(name, uaddr->sa_data, sizeof(name));
+
+- dev = dev_get_by_name(sock_net(sk), name);
+- if (dev)
+- err = packet_do_bind(sk, dev, pkt_sk(sk)->num);
+- return err;
++ return packet_do_bind(sk, name, 0, pkt_sk(sk)->num);
+ }
+
+ static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+ {
+ struct sockaddr_ll *sll = (struct sockaddr_ll *)uaddr;
+ struct sock *sk = sock->sk;
+- struct net_device *dev = NULL;
+- int err;
+-
+
+ /*
+ * Check legality
+@@ -2781,16 +2807,8 @@ static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len
+ if (sll->sll_family != AF_PACKET)
+ return -EINVAL;
+
+- if (sll->sll_ifindex) {
+- err = -ENODEV;
+- dev = dev_get_by_index(sock_net(sk), sll->sll_ifindex);
+- if (dev == NULL)
+- goto out;
+- }
+- err = packet_do_bind(sk, dev, sll->sll_protocol ? : pkt_sk(sk)->num);
+-
+-out:
+- return err;
++ return packet_do_bind(sk, NULL, sll->sll_ifindex,
++ sll->sll_protocol ? : pkt_sk(sk)->num);
+ }
+
+ static struct proto packet_proto = {
+diff --git a/net/rds/connection.c b/net/rds/connection.c
+index da6da57e5f36..9d66705f9d41 100644
+--- a/net/rds/connection.c
++++ b/net/rds/connection.c
+@@ -187,6 +187,12 @@ new_conn:
+ }
+ }
+
++ if (trans == NULL) {
++ kmem_cache_free(rds_conn_slab, conn);
++ conn = ERR_PTR(-ENODEV);
++ goto out;
++ }
++
+ conn->c_trans = trans;
+
+ ret = trans->conn_alloc(conn, gfp);
+diff --git a/net/rds/tcp_recv.c b/net/rds/tcp_recv.c
+index fbc5ef88bc0e..27a992154804 100644
+--- a/net/rds/tcp_recv.c
++++ b/net/rds/tcp_recv.c
+@@ -214,8 +214,15 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb,
+ }
+
+ to_copy = min(tc->t_tinc_data_rem, left);
+- pskb_pull(clone, offset);
+- pskb_trim(clone, to_copy);
++ if (!pskb_pull(clone, offset) ||
++ pskb_trim(clone, to_copy)) {
++ pr_warn("rds_tcp_data_recv: pull/trim failed "
++ "left %zu data_rem %zu skb_len %d\n",
++ left, tc->t_tinc_data_rem, skb->len);
++ kfree_skb(clone);
++ desc->error = -ENOMEM;
++ goto out;
++ }
+ skb_queue_tail(&tinc->ti_skb_list, clone);
+
+ rdsdebug("skb %p data %p len %d off %u to_copy %zu -> "
+diff --git a/net/tipc/msg.c b/net/tipc/msg.c
+index c3e96e815418..e9333147d6f1 100644
+--- a/net/tipc/msg.c
++++ b/net/tipc/msg.c
+@@ -121,7 +121,7 @@ int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
+ {
+ struct sk_buff *head = *headbuf;
+ struct sk_buff *frag = *buf;
+- struct sk_buff *tail;
++ struct sk_buff *tail = NULL;
+ struct tipc_msg *msg;
+ u32 fragid;
+ int delta;
+@@ -141,9 +141,15 @@ int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
+ if (unlikely(skb_unclone(frag, GFP_ATOMIC)))
+ goto err;
+ head = *headbuf = frag;
+- skb_frag_list_init(head);
+- TIPC_SKB_CB(head)->tail = NULL;
+ *buf = NULL;
++ TIPC_SKB_CB(head)->tail = NULL;
++ if (skb_is_nonlinear(head)) {
++ skb_walk_frags(head, tail) {
++ TIPC_SKB_CB(head)->tail = tail;
++ }
++ } else {
++ skb_frag_list_init(head);
++ }
+ return 0;
+ }
+
+diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
+index 66deebc66aa1..f8dfee5072c0 100644
+--- a/net/tipc/udp_media.c
++++ b/net/tipc/udp_media.c
+@@ -48,6 +48,7 @@
+ #include <linux/tipc_netlink.h>
+ #include "core.h"
+ #include "bearer.h"
++#include "msg.h"
+
+ /* IANA assigned UDP port */
+ #define UDP_PORT_DEFAULT 6118
+@@ -216,6 +217,10 @@ static int tipc_udp_recv(struct sock *sk, struct sk_buff *skb)
+ {
+ struct udp_bearer *ub;
+ struct tipc_bearer *b;
++ int usr = msg_user(buf_msg(skb));
++
++ if ((usr == LINK_PROTOCOL) || (usr == NAME_DISTRIBUTOR))
++ skb_linearize(skb);
+
+ ub = rcu_dereference_sk_user_data(sk);
+ if (!ub) {
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index dd78445c7d50..04b6f3f6ee0b 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -3407,12 +3407,6 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
+ wdev->iftype))
+ return -EINVAL;
+
+- if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
+- params.acl = parse_acl_data(&rdev->wiphy, info);
+- if (IS_ERR(params.acl))
+- return PTR_ERR(params.acl);
+- }
+-
+ if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
+ params.smps_mode =
+ nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
+@@ -3436,6 +3430,12 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
+ params.smps_mode = NL80211_SMPS_OFF;
+ }
+
++ if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
++ params.acl = parse_acl_data(&rdev->wiphy, info);
++ if (IS_ERR(params.acl))
++ return PTR_ERR(params.acl);
++ }
++
+ wdev_lock(wdev);
+ err = rdev_start_ap(rdev, dev, ¶ms);
+ if (!err) {
+diff --git a/sound/usb/midi.c b/sound/usb/midi.c
+index 417ebb11cf48..bec63e0d2605 100644
+--- a/sound/usb/midi.c
++++ b/sound/usb/midi.c
+@@ -174,6 +174,8 @@ struct snd_usb_midi_in_endpoint {
+ u8 running_status_length;
+ } ports[0x10];
+ u8 seen_f5;
++ bool in_sysex;
++ u8 last_cin;
+ u8 error_resubmit;
+ int current_port;
+ };
+@@ -468,6 +470,39 @@ static void snd_usbmidi_maudio_broken_running_status_input(
+ }
+
+ /*
++ * QinHeng CH345 is buggy: every second packet inside a SysEx has not CIN 4
++ * but the previously seen CIN, but still with three data bytes.
++ */
++static void ch345_broken_sysex_input(struct snd_usb_midi_in_endpoint *ep,
++ uint8_t *buffer, int buffer_length)
++{
++ unsigned int i, cin, length;
++
++ for (i = 0; i + 3 < buffer_length; i += 4) {
++ if (buffer[i] == 0 && i > 0)
++ break;
++ cin = buffer[i] & 0x0f;
++ if (ep->in_sysex &&
++ cin == ep->last_cin &&
++ (buffer[i + 1 + (cin == 0x6)] & 0x80) == 0)
++ cin = 0x4;
++#if 0
++ if (buffer[i + 1] == 0x90) {
++ /*
++ * Either a corrupted running status or a real note-on
++ * message; impossible to detect reliably.
++ */
++ }
++#endif
++ length = snd_usbmidi_cin_length[cin];
++ snd_usbmidi_input_data(ep, 0, &buffer[i + 1], length);
++ ep->in_sysex = cin == 0x4;
++ if (!ep->in_sysex)
++ ep->last_cin = cin;
++ }
++}
++
++/*
+ * CME protocol: like the standard protocol, but SysEx commands are sent as a
+ * single USB packet preceded by a 0x0F byte.
+ */
+@@ -660,6 +695,12 @@ static struct usb_protocol_ops snd_usbmidi_cme_ops = {
+ .output_packet = snd_usbmidi_output_standard_packet,
+ };
+
++static struct usb_protocol_ops snd_usbmidi_ch345_broken_sysex_ops = {
++ .input = ch345_broken_sysex_input,
++ .output = snd_usbmidi_standard_output,
++ .output_packet = snd_usbmidi_output_standard_packet,
++};
++
+ /*
+ * AKAI MPD16 protocol:
+ *
+@@ -1341,6 +1382,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi,
+ * Various chips declare a packet size larger than 4 bytes, but
+ * do not actually work with larger packets:
+ */
++ case USB_ID(0x0a67, 0x5011): /* Medeli DD305 */
+ case USB_ID(0x0a92, 0x1020): /* ESI M4U */
+ case USB_ID(0x1430, 0x474b): /* RedOctane GH MIDI INTERFACE */
+ case USB_ID(0x15ca, 0x0101): /* Textech USB Midi Cable */
+@@ -2375,6 +2417,10 @@ int snd_usbmidi_create(struct snd_card *card,
+
+ err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
+ break;
++ case QUIRK_MIDI_CH345:
++ umidi->usb_protocol_ops = &snd_usbmidi_ch345_broken_sysex_ops;
++ err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
++ break;
+ default:
+ dev_err(&umidi->dev->dev, "invalid quirk type %d\n",
+ quirk->type);
+diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
+index e4756651a52c..ecc2a4ea014d 100644
+--- a/sound/usb/quirks-table.h
++++ b/sound/usb/quirks-table.h
+@@ -2820,6 +2820,17 @@ YAMAHA_DEVICE(0x7010, "UB99"),
+ .idProduct = 0x1020,
+ },
+
++/* QinHeng devices */
++{
++ USB_DEVICE(0x1a86, 0x752d),
++ .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
++ .vendor_name = "QinHeng",
++ .product_name = "CH345",
++ .ifnum = 1,
++ .type = QUIRK_MIDI_CH345
++ }
++},
++
+ /* KeithMcMillen Stringport */
+ {
+ USB_DEVICE(0x1f38, 0x0001),
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 00ebc0ca008e..eef9b8e4b949 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -535,6 +535,7 @@ int snd_usb_create_quirk(struct snd_usb_audio *chip,
+ [QUIRK_MIDI_CME] = create_any_midi_quirk,
+ [QUIRK_MIDI_AKAI] = create_any_midi_quirk,
+ [QUIRK_MIDI_FTDI] = create_any_midi_quirk,
++ [QUIRK_MIDI_CH345] = create_any_midi_quirk,
+ [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
+ [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
+ [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
+@@ -1271,6 +1272,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
+ case USB_ID(0x20b1, 0x000a): /* Gustard DAC-X20U */
+ case USB_ID(0x20b1, 0x2009): /* DIYINHK DSD DXD 384kHz USB to I2S/DSD */
+ case USB_ID(0x20b1, 0x2023): /* JLsounds I2SoverUSB */
++ case USB_ID(0x20b1, 0x3023): /* Aune X1S 32BIT/384 DSD DAC */
+ if (fp->altsetting == 3)
+ return SNDRV_PCM_FMTBIT_DSD_U32_BE;
+ break;
+diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
+index 91d0380431b4..991aa84491cd 100644
+--- a/sound/usb/usbaudio.h
++++ b/sound/usb/usbaudio.h
+@@ -94,6 +94,7 @@ enum quirk_type {
+ QUIRK_MIDI_AKAI,
+ QUIRK_MIDI_US122L,
+ QUIRK_MIDI_FTDI,
++ QUIRK_MIDI_CH345,
+ QUIRK_AUDIO_STANDARD_INTERFACE,
+ QUIRK_AUDIO_FIXED_ENDPOINT,
+ QUIRK_AUDIO_EDIROL_UAXX,
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-11-10 0:30 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-11-10 0:30 UTC (permalink / raw
To: gentoo-commits
commit: fe5de491080fffef58f47ac59a6dbab9324f4599
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Nov 10 00:29:54 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Nov 10 00:29:54 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=fe5de491
Linux patch 4.1.13
0000_README | 4 +
1012_linux-4.1.13.patch | 3220 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 3224 insertions(+)
diff --git a/0000_README b/0000_README
index ff278e3..acad761 100644
--- a/0000_README
+++ b/0000_README
@@ -91,6 +91,10 @@ Patch: 1011_linux-4.1.12.patch
From: http://www.kernel.org
Desc: Linux 4.1.12
+Patch: 1012_linux-4.1.13.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.13
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1012_linux-4.1.13.patch b/1012_linux-4.1.13.patch
new file mode 100644
index 0000000..449c35f
--- /dev/null
+++ b/1012_linux-4.1.13.patch
@@ -0,0 +1,3220 @@
+diff --git a/Documentation/devicetree/bindings/mfd/mfd.txt b/Documentation/devicetree/bindings/mfd/mfd.txt
+new file mode 100644
+index 000000000000..af9d6931a1a2
+--- /dev/null
++++ b/Documentation/devicetree/bindings/mfd/mfd.txt
+@@ -0,0 +1,41 @@
++Multi-Function Devices (MFD)
++
++These devices comprise a nexus for heterogeneous hardware blocks containing
++more than one non-unique yet varying hardware functionality.
++
++A typical MFD can be:
++
++- A mixed signal ASIC on an external bus, sometimes a PMIC (Power Management
++ Integrated Circuit) that is manufactured in a lower technology node (rough
++ silicon) that handles analog drivers for things like audio amplifiers, LED
++ drivers, level shifters, PHY (physical interfaces to things like USB or
++ ethernet), regulators etc.
++
++- A range of memory registers containing "miscellaneous system registers" also
++ known as a system controller "syscon" or any other memory range containing a
++ mix of unrelated hardware devices.
++
++Optional properties:
++
++- compatible : "simple-mfd" - this signifies that the operating system should
++ consider all subnodes of the MFD device as separate devices akin to how
++ "simple-bus" inidicates when to see subnodes as children for a simple
++ memory-mapped bus. For more complex devices, when the nexus driver has to
++ probe registers to figure out what child devices exist etc, this should not
++ be used. In the latter case the child devices will be determined by the
++ operating system.
++
++Example:
++
++foo@1000 {
++ compatible = "syscon", "simple-mfd";
++ reg = <0x01000 0x1000>;
++
++ led@08.0 {
++ compatible = "register-bit-led";
++ offset = <0x08>;
++ mask = <0x01>;
++ label = "myled";
++ default-state = "on";
++ };
++};
+diff --git a/Makefile b/Makefile
+index 2320f1911404..d5d229db61d5 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 12
++SUBLEVEL = 13
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
+index c9df40e5cd3b..e8397879d0a7 100644
+--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
++++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
+@@ -354,11 +354,12 @@
+ /* SMPS9 unused */
+
+ ldo1_reg: ldo1 {
+- /* VDD_SD */
++ /* VDD_SD / VDDSHV8 */
+ regulator-name = "ldo1";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
++ regulator-always-on;
+ };
+
+ ldo2_reg: ldo2 {
+diff --git a/arch/arm/boot/dts/armada-385-db-ap.dts b/arch/arm/boot/dts/armada-385-db-ap.dts
+index 7219ac3a3d90..9f730e8e9f87 100644
+--- a/arch/arm/boot/dts/armada-385-db-ap.dts
++++ b/arch/arm/boot/dts/armada-385-db-ap.dts
+@@ -46,7 +46,7 @@
+
+ / {
+ model = "Marvell Armada 385 Access Point Development Board";
+- compatible = "marvell,a385-db-ap", "marvell,armada385", "marvell,armada38x";
++ compatible = "marvell,a385-db-ap", "marvell,armada385", "marvell,armada380";
+
+ chosen {
+ stdout-path = "serial1:115200n8";
+diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
+index 146e71118a72..a0ec8bff83dd 100644
+--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
++++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
+@@ -915,6 +915,11 @@
+ };
+ };
+
++&pmu_system_controller {
++ assigned-clocks = <&pmu_system_controller 0>;
++ assigned-clock-parents = <&clock CLK_FIN_PLL>;
++};
++
+ &rtc {
+ status = "okay";
+ clocks = <&clock CLK_RTC>, <&max77802 MAX77802_CLK_32K_AP>;
+diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
+index 02eb8b15374f..1171f347878a 100644
+--- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
++++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
+@@ -878,6 +878,11 @@
+ };
+ };
+
++&pmu_system_controller {
++ assigned-clocks = <&pmu_system_controller 0>;
++ assigned-clock-parents = <&clock CLK_FIN_PLL>;
++};
++
+ &rtc {
+ status = "okay";
+ clocks = <&clock CLK_RTC>, <&max77802 MAX77802_CLK_32K_AP>;
+diff --git a/arch/arm/boot/dts/imx6dl-riotboard.dts b/arch/arm/boot/dts/imx6dl-riotboard.dts
+index 43cb3fd76be7..5111f5170d53 100644
+--- a/arch/arm/boot/dts/imx6dl-riotboard.dts
++++ b/arch/arm/boot/dts/imx6dl-riotboard.dts
+@@ -305,8 +305,8 @@
+ &usdhc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+- cd-gpios = <&gpio1 4 0>;
+- wp-gpios = <&gpio1 2 0>;
++ cd-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+@@ -314,8 +314,8 @@
+ &usdhc3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+- cd-gpios = <&gpio7 0 0>;
+- wp-gpios = <&gpio7 1 0>;
++ cd-gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio7 1 GPIO_ACTIVE_HIGH>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6q-arm2.dts b/arch/arm/boot/dts/imx6q-arm2.dts
+index 78df05e9d1ce..d6515f7a56c4 100644
+--- a/arch/arm/boot/dts/imx6q-arm2.dts
++++ b/arch/arm/boot/dts/imx6q-arm2.dts
+@@ -11,6 +11,7 @@
+ */
+
+ /dts-v1/;
++#include <dt-bindings/gpio/gpio.h>
+ #include "imx6q.dtsi"
+
+ / {
+@@ -196,8 +197,8 @@
+ };
+
+ &usdhc3 {
+- cd-gpios = <&gpio6 11 0>;
+- wp-gpios = <&gpio6 14 0>;
++ cd-gpios = <&gpio6 11 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio6 14 GPIO_ACTIVE_HIGH>;
+ vmmc-supply = <®_3p3v>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3
+diff --git a/arch/arm/boot/dts/imx6q-gk802.dts b/arch/arm/boot/dts/imx6q-gk802.dts
+index 703539cf36d3..00bd63e63d0c 100644
+--- a/arch/arm/boot/dts/imx6q-gk802.dts
++++ b/arch/arm/boot/dts/imx6q-gk802.dts
+@@ -7,6 +7,7 @@
+ */
+
+ /dts-v1/;
++#include <dt-bindings/gpio/gpio.h>
+ #include "imx6q.dtsi"
+
+ / {
+@@ -161,7 +162,7 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+ bus-width = <4>;
+- cd-gpios = <&gpio6 11 0>;
++ cd-gpios = <&gpio6 11 GPIO_ACTIVE_LOW>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6q-tbs2910.dts b/arch/arm/boot/dts/imx6q-tbs2910.dts
+index a43abfa21e33..5645d52850a7 100644
+--- a/arch/arm/boot/dts/imx6q-tbs2910.dts
++++ b/arch/arm/boot/dts/imx6q-tbs2910.dts
+@@ -251,7 +251,7 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ bus-width = <4>;
+- cd-gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+@@ -260,7 +260,7 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+ bus-width = <4>;
+- cd-gpios = <&gpio2 0 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio2 0 GPIO_ACTIVE_LOW>;
+ wp-gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+diff --git a/arch/arm/boot/dts/imx6qdl-aristainetos.dtsi b/arch/arm/boot/dts/imx6qdl-aristainetos.dtsi
+index e6d9195a1da7..f4d6ae564ead 100644
+--- a/arch/arm/boot/dts/imx6qdl-aristainetos.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-aristainetos.dtsi
+@@ -173,7 +173,7 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc1>;
+ vmmc-supply = <®_3p3v>;
+- cd-gpios = <&gpio4 7 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio4 7 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+
+@@ -181,7 +181,7 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ vmmc-supply = <®_3p3v>;
+- cd-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio4 8 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+
+diff --git a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
+index d033bb182060..6a846e0ef505 100644
+--- a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
+@@ -259,6 +259,6 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_cubox_i_usdhc2_aux &pinctrl_cubox_i_usdhc2>;
+ vmmc-supply = <®_3p3v>;
+- cd-gpios = <&gpio1 4 0>;
++ cd-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-dfi-fs700-m60.dtsi b/arch/arm/boot/dts/imx6qdl-dfi-fs700-m60.dtsi
+index 2c253d6d20bd..45e7c39e80d5 100644
+--- a/arch/arm/boot/dts/imx6qdl-dfi-fs700-m60.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-dfi-fs700-m60.dtsi
+@@ -1,3 +1,5 @@
++#include <dt-bindings/gpio/gpio.h>
++
+ / {
+ regulators {
+ compatible = "simple-bus";
+@@ -181,7 +183,7 @@
+ &usdhc2 { /* module slot */
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+- cd-gpios = <&gpio2 2 0>;
++ cd-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+
+diff --git a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
+index b5756c21ea1d..4493f6e99330 100644
+--- a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
+@@ -318,7 +318,7 @@
+ &usdhc3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+- cd-gpios = <&gpio7 0 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
+index 86f03c1b147c..a857d1294609 100644
+--- a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
+@@ -324,7 +324,7 @@
+ &usdhc3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+- cd-gpios = <&gpio7 0 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
+index 4a8d97f47759..1afe3385e2d2 100644
+--- a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
+@@ -417,7 +417,7 @@
+ &usdhc3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+- cd-gpios = <&gpio7 0 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-hummingboard.dtsi b/arch/arm/boot/dts/imx6qdl-hummingboard.dtsi
+index 151a3db2aea9..c6833d2b4ff5 100644
+--- a/arch/arm/boot/dts/imx6qdl-hummingboard.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-hummingboard.dtsi
+@@ -41,6 +41,7 @@
+ */
+ #include "imx6qdl-microsom.dtsi"
+ #include "imx6qdl-microsom-ar8035.dtsi"
++#include <dt-bindings/gpio/gpio.h>
+
+ / {
+ chosen {
+@@ -288,6 +289,6 @@
+ &pinctrl_hummingboard_usdhc2
+ >;
+ vmmc-supply = <®_3p3v>;
+- cd-gpios = <&gpio1 4 0>;
++ cd-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-nitrogen6x.dtsi b/arch/arm/boot/dts/imx6qdl-nitrogen6x.dtsi
+index 08218120e770..64e0b6178bf4 100644
+--- a/arch/arm/boot/dts/imx6qdl-nitrogen6x.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-nitrogen6x.dtsi
+@@ -449,7 +449,7 @@
+ &usdhc3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+- cd-gpios = <&gpio7 0 0>;
++ cd-gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+@@ -457,7 +457,7 @@
+ &usdhc4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc4>;
+- cd-gpios = <&gpio2 6 0>;
++ cd-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
+index 1ce6133b67f5..9e6ecd99b472 100644
+--- a/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
+@@ -409,8 +409,8 @@
+ &usdhc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+- cd-gpios = <&gpio1 4 0>;
+- wp-gpios = <&gpio1 2 0>;
++ cd-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+ status = "disabled";
+ };
+
+@@ -418,7 +418,7 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3
+ &pinctrl_usdhc3_cdwp>;
+- cd-gpios = <&gpio1 27 0>;
+- wp-gpios = <&gpio1 29 0>;
++ cd-gpios = <&gpio1 27 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio1 29 GPIO_ACTIVE_HIGH>;
+ status = "disabled";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-rex.dtsi b/arch/arm/boot/dts/imx6qdl-rex.dtsi
+index 394a4ace351a..a50356243888 100644
+--- a/arch/arm/boot/dts/imx6qdl-rex.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-rex.dtsi
+@@ -340,7 +340,7 @@
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ bus-width = <4>;
+ cd-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
+- wp-gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio2 3 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+@@ -349,6 +349,6 @@
+ pinctrl-0 = <&pinctrl_usdhc3>;
+ bus-width = <4>;
+ cd-gpios = <&gpio2 0 GPIO_ACTIVE_LOW>;
+- wp-gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
+index 3b24b12651b2..e329ca5c3322 100644
+--- a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
+@@ -467,8 +467,8 @@
+ pinctrl-0 = <&pinctrl_usdhc3>;
+ pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
+- cd-gpios = <&gpio6 15 0>;
+- wp-gpios = <&gpio1 13 0>;
++ cd-gpios = <&gpio6 15 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+diff --git a/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi b/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
+index 0b28a9d5241e..1e27485e4293 100644
+--- a/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
+@@ -444,8 +444,8 @@
+ &usdhc3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+- cd-gpios = <&gpio7 0 0>;
+- wp-gpios = <&gpio7 1 0>;
++ cd-gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio7 1 GPIO_ACTIVE_HIGH>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+@@ -453,7 +453,7 @@
+ &usdhc4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc4>;
+- cd-gpios = <&gpio2 6 0>;
++ cd-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
+index a626e6dd8022..944eb81cb2b8 100644
+--- a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
+@@ -562,8 +562,8 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ bus-width = <8>;
+- cd-gpios = <&gpio2 2 0>;
+- wp-gpios = <&gpio2 3 0>;
++ cd-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio2 3 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+@@ -571,8 +571,8 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+ bus-width = <8>;
+- cd-gpios = <&gpio2 0 0>;
+- wp-gpios = <&gpio2 1 0>;
++ cd-gpios = <&gpio2 0 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+diff --git a/arch/arm/boot/dts/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/imx6qdl-tx6.dtsi
+index f02b80b41d4f..da08de324e9e 100644
+--- a/arch/arm/boot/dts/imx6qdl-tx6.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-tx6.dtsi
+@@ -680,7 +680,7 @@
+ pinctrl-0 = <&pinctrl_usdhc1>;
+ bus-width = <4>;
+ no-1-8-v;
+- cd-gpios = <&gpio7 2 0>;
++ cd-gpios = <&gpio7 2 GPIO_ACTIVE_LOW>;
+ fsl,wp-controller;
+ status = "okay";
+ };
+@@ -690,7 +690,7 @@
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ bus-width = <4>;
+ no-1-8-v;
+- cd-gpios = <&gpio7 3 0>;
++ cd-gpios = <&gpio7 3 GPIO_ACTIVE_LOW>;
+ fsl,wp-controller;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
+index 5fb091675582..9e096d811bed 100644
+--- a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi
+@@ -9,6 +9,8 @@
+ *
+ */
+
++#include <dt-bindings/gpio/gpio.h>
++
+ / {
+ regulators {
+ compatible = "simple-bus";
+@@ -250,13 +252,13 @@
+ &usdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc1>;
+- cd-gpios = <&gpio1 2 0>;
++ cd-gpios = <&gpio1 2 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+
+ &usdhc3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+- cd-gpios = <&gpio3 9 0>;
++ cd-gpios = <&gpio3 9 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6sl-evk.dts b/arch/arm/boot/dts/imx6sl-evk.dts
+index 945887d3fdb3..b84dff2e94ea 100644
+--- a/arch/arm/boot/dts/imx6sl-evk.dts
++++ b/arch/arm/boot/dts/imx6sl-evk.dts
+@@ -617,8 +617,8 @@
+ pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
+ bus-width = <8>;
+- cd-gpios = <&gpio4 7 0>;
+- wp-gpios = <&gpio4 6 0>;
++ cd-gpios = <&gpio4 7 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio4 6 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+@@ -627,8 +627,8 @@
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
+- cd-gpios = <&gpio5 0 0>;
+- wp-gpios = <&gpio4 29 0>;
++ cd-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio4 29 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+@@ -637,6 +637,6 @@
+ pinctrl-0 = <&pinctrl_usdhc3>;
+ pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
+- cd-gpios = <&gpio3 22 0>;
++ cd-gpios = <&gpio3 22 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6sx-sabreauto.dts b/arch/arm/boot/dts/imx6sx-sabreauto.dts
+index e3c0b63c2205..115f3fd78971 100644
+--- a/arch/arm/boot/dts/imx6sx-sabreauto.dts
++++ b/arch/arm/boot/dts/imx6sx-sabreauto.dts
+@@ -49,7 +49,7 @@
+ pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
+ bus-width = <8>;
+- cd-gpios = <&gpio7 10 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio7 10 GPIO_ACTIVE_LOW>;
+ wp-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
+ keep-power-in-suspend;
+ enable-sdio-wakeup;
+@@ -61,7 +61,7 @@
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc4>;
+ bus-width = <8>;
+- cd-gpios = <&gpio7 11 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio7 11 GPIO_ACTIVE_LOW>;
+ no-1-8-v;
+ keep-power-in-suspend;
+ enable-sdio-wakup;
+diff --git a/arch/arm/boot/dts/imx6sx-sdb.dtsi b/arch/arm/boot/dts/imx6sx-sdb.dtsi
+index cef04cef3a80..ac88c3467078 100644
+--- a/arch/arm/boot/dts/imx6sx-sdb.dtsi
++++ b/arch/arm/boot/dts/imx6sx-sdb.dtsi
+@@ -293,7 +293,7 @@
+ pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
+ bus-width = <8>;
+- cd-gpios = <&gpio2 10 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>;
+ wp-gpios = <&gpio2 15 GPIO_ACTIVE_HIGH>;
+ keep-power-in-suspend;
+ enable-sdio-wakeup;
+@@ -304,7 +304,7 @@
+ &usdhc4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc4>;
+- cd-gpios = <&gpio6 21 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio6 21 GPIO_ACTIVE_LOW>;
+ wp-gpios = <&gpio6 20 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 2b4847c7cbd4..fa36571b755a 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -111,7 +111,7 @@
+ 720000 1200000
+ 528000 1100000
+ 312000 1000000
+- 144000 900000
++ 144000 1000000
+ >;
+ #cooling-cells = <2>;
+ cooling-min-level = <0>;
+diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig
+index f1f79d104309..60c1a0f4d67a 100644
+--- a/arch/arm/kvm/Kconfig
++++ b/arch/arm/kvm/Kconfig
+@@ -21,6 +21,7 @@ config KVM
+ depends on MMU && OF
+ select PREEMPT_NOTIFIERS
+ select ANON_INODES
++ select ARM_GIC
+ select HAVE_KVM_CPU_RELAX_INTERCEPT
+ select HAVE_KVM_ARCH_TLB_FLUSH_ALL
+ select KVM_MMIO
+diff --git a/arch/arm/plat-orion/common.c b/arch/arm/plat-orion/common.c
+index f5b00f41c4f6..b8b6e22f9987 100644
+--- a/arch/arm/plat-orion/common.c
++++ b/arch/arm/plat-orion/common.c
+@@ -499,7 +499,7 @@ void __init orion_ge00_switch_init(struct dsa_platform_data *d, int irq)
+
+ d->netdev = &orion_ge00.dev;
+ for (i = 0; i < d->nr_chips; i++)
+- d->chip[i].host_dev = &orion_ge00_shared.dev;
++ d->chip[i].host_dev = &orion_ge_mvmdio.dev;
+ orion_switch_device.dev.platform_data = d;
+
+ platform_device_register(&orion_switch_device);
+diff --git a/arch/arm/vdso/vdsomunge.c b/arch/arm/vdso/vdsomunge.c
+index aedec81d1198..f6455273b2f8 100644
+--- a/arch/arm/vdso/vdsomunge.c
++++ b/arch/arm/vdso/vdsomunge.c
+@@ -45,7 +45,6 @@
+ * it does.
+ */
+
+-#include <byteswap.h>
+ #include <elf.h>
+ #include <errno.h>
+ #include <fcntl.h>
+@@ -59,6 +58,16 @@
+ #include <sys/types.h>
+ #include <unistd.h>
+
++#define swab16(x) \
++ ((((x) & 0x00ff) << 8) | \
++ (((x) & 0xff00) >> 8))
++
++#define swab32(x) \
++ ((((x) & 0x000000ff) << 24) | \
++ (((x) & 0x0000ff00) << 8) | \
++ (((x) & 0x00ff0000) >> 8) | \
++ (((x) & 0xff000000) >> 24))
++
+ #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+ #define HOST_ORDER ELFDATA2LSB
+ #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+@@ -104,17 +113,17 @@ static void cleanup(void)
+
+ static Elf32_Word read_elf_word(Elf32_Word word, bool swap)
+ {
+- return swap ? bswap_32(word) : word;
++ return swap ? swab32(word) : word;
+ }
+
+ static Elf32_Half read_elf_half(Elf32_Half half, bool swap)
+ {
+- return swap ? bswap_16(half) : half;
++ return swap ? swab16(half) : half;
+ }
+
+ static void write_elf_word(Elf32_Word val, Elf32_Word *dst, bool swap)
+ {
+- *dst = swap ? bswap_32(val) : val;
++ *dst = swap ? swab32(val) : val;
+ }
+
+ int main(int argc, char **argv)
+diff --git a/arch/arm64/include/asm/cpuidle.h b/arch/arm64/include/asm/cpuidle.h
+index 141b2fcabaa6..0f74f05d662a 100644
+--- a/arch/arm64/include/asm/cpuidle.h
++++ b/arch/arm64/include/asm/cpuidle.h
+@@ -5,20 +5,16 @@
+
+ #ifdef CONFIG_CPU_IDLE
+ extern int arm_cpuidle_init(unsigned int cpu);
+-extern int cpu_suspend(unsigned long arg);
++extern int arm_cpuidle_suspend(int index);
+ #else
+ static inline int arm_cpuidle_init(unsigned int cpu)
+ {
+ return -EOPNOTSUPP;
+ }
+
+-static inline int cpu_suspend(unsigned long arg)
++static inline int arm_cpuidle_suspend(int index)
+ {
+ return -EOPNOTSUPP;
+ }
+ #endif
+-static inline int arm_cpuidle_suspend(int index)
+-{
+- return cpu_suspend(index);
+-}
+ #endif
+diff --git a/arch/arm64/include/asm/suspend.h b/arch/arm64/include/asm/suspend.h
+index 003802f58963..59a5b0f1e81c 100644
+--- a/arch/arm64/include/asm/suspend.h
++++ b/arch/arm64/include/asm/suspend.h
+@@ -21,6 +21,6 @@ struct sleep_save_sp {
+ phys_addr_t save_ptr_stash_phys;
+ };
+
+-extern int __cpu_suspend(unsigned long arg, int (*fn)(unsigned long));
++extern int cpu_suspend(unsigned long arg, int (*fn)(unsigned long));
+ extern void cpu_resume(void);
+ #endif
+diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c
+index 7922c2e710ca..7ac3920b1356 100644
+--- a/arch/arm64/kernel/armv8_deprecated.c
++++ b/arch/arm64/kernel/armv8_deprecated.c
+@@ -279,22 +279,24 @@ static void register_insn_emulation_sysctl(struct ctl_table *table)
+ */
+ #define __user_swpX_asm(data, addr, res, temp, B) \
+ __asm__ __volatile__( \
+- " mov %w2, %w1\n" \
+- "0: ldxr"B" %w1, [%3]\n" \
+- "1: stxr"B" %w0, %w2, [%3]\n" \
++ "0: ldxr"B" %w2, [%3]\n" \
++ "1: stxr"B" %w0, %w1, [%3]\n" \
+ " cbz %w0, 2f\n" \
+ " mov %w0, %w4\n" \
++ " b 3f\n" \
+ "2:\n" \
++ " mov %w1, %w2\n" \
++ "3:\n" \
+ " .pushsection .fixup,\"ax\"\n" \
+ " .align 2\n" \
+- "3: mov %w0, %w5\n" \
+- " b 2b\n" \
++ "4: mov %w0, %w5\n" \
++ " b 3b\n" \
+ " .popsection" \
+ " .pushsection __ex_table,\"a\"\n" \
+ " .align 3\n" \
+- " .quad 0b, 3b\n" \
+- " .quad 1b, 3b\n" \
+- " .popsection" \
++ " .quad 0b, 4b\n" \
++ " .quad 1b, 4b\n" \
++ " .popsection\n" \
+ : "=&r" (res), "+r" (data), "=&r" (temp) \
+ : "r" (addr), "i" (-EAGAIN), "i" (-EFAULT) \
+ : "memory")
+diff --git a/arch/arm64/kernel/cpuidle.c b/arch/arm64/kernel/cpuidle.c
+index a78143a5c99f..2bbd0fee084f 100644
+--- a/arch/arm64/kernel/cpuidle.c
++++ b/arch/arm64/kernel/cpuidle.c
+@@ -37,7 +37,7 @@ int arm_cpuidle_init(unsigned int cpu)
+ * Return: 0 on success, -EOPNOTSUPP if CPU suspend hook not initialized, CPU
+ * operations back-end error code otherwise.
+ */
+-int cpu_suspend(unsigned long arg)
++int arm_cpuidle_suspend(int index)
+ {
+ int cpu = smp_processor_id();
+
+@@ -47,5 +47,5 @@ int cpu_suspend(unsigned long arg)
+ */
+ if (!cpu_ops[cpu] || !cpu_ops[cpu]->cpu_suspend)
+ return -EOPNOTSUPP;
+- return cpu_ops[cpu]->cpu_suspend(arg);
++ return cpu_ops[cpu]->cpu_suspend(index);
+ }
+diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c
+index ea18cb53921e..24d4733b7e3c 100644
+--- a/arch/arm64/kernel/psci.c
++++ b/arch/arm64/kernel/psci.c
+@@ -546,7 +546,7 @@ static int __maybe_unused cpu_psci_cpu_suspend(unsigned long index)
+ if (state[index - 1].type == PSCI_POWER_STATE_TYPE_STANDBY)
+ ret = psci_ops.cpu_suspend(state[index - 1], 0);
+ else
+- ret = __cpu_suspend(index, psci_suspend_finisher);
++ ret = cpu_suspend(index, psci_suspend_finisher);
+
+ return ret;
+ }
+diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c
+index 407991bf79f5..ccb6078ed9f2 100644
+--- a/arch/arm64/kernel/stacktrace.c
++++ b/arch/arm64/kernel/stacktrace.c
+@@ -48,11 +48,7 @@ int notrace unwind_frame(struct stackframe *frame)
+
+ frame->sp = fp + 0x10;
+ frame->fp = *(unsigned long *)(fp);
+- /*
+- * -4 here because we care about the PC at time of bl,
+- * not where the return will go.
+- */
+- frame->pc = *(unsigned long *)(fp + 8) - 4;
++ frame->pc = *(unsigned long *)(fp + 8);
+
+ return 0;
+ }
+diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c
+index d7daf45ae7a2..53f1f8dccf6c 100644
+--- a/arch/arm64/kernel/suspend.c
++++ b/arch/arm64/kernel/suspend.c
+@@ -51,13 +51,13 @@ void __init cpu_suspend_set_dbg_restorer(void (*hw_bp_restore)(void *))
+ }
+
+ /*
+- * __cpu_suspend
++ * cpu_suspend
+ *
+ * arg: argument to pass to the finisher function
+ * fn: finisher function pointer
+ *
+ */
+-int __cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
++int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
+ {
+ struct mm_struct *mm = current->active_mm;
+ int ret;
+@@ -80,17 +80,21 @@ int __cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
+ if (ret == 0) {
+ /*
+ * We are resuming from reset with TTBR0_EL1 set to the
+- * idmap to enable the MMU; restore the active_mm mappings in
+- * TTBR0_EL1 unless the active_mm == &init_mm, in which case
+- * the thread entered __cpu_suspend with TTBR0_EL1 set to
+- * reserved TTBR0 page tables and should be restored as such.
++ * idmap to enable the MMU; set the TTBR0 to the reserved
++ * page tables to prevent speculative TLB allocations, flush
++ * the local tlb and set the default tcr_el1.t0sz so that
++ * the TTBR0 address space set-up is properly restored.
++ * If the current active_mm != &init_mm we entered cpu_suspend
++ * with mappings in TTBR0 that must be restored, so we switch
++ * them back to complete the address space configuration
++ * restoration before returning.
+ */
+- if (mm == &init_mm)
+- cpu_set_reserved_ttbr0();
+- else
+- cpu_switch_mm(mm->pgd, mm);
+-
++ cpu_set_reserved_ttbr0();
+ flush_tlb_all();
++ cpu_set_default_tcr_t0sz();
++
++ if (mm != &init_mm)
++ cpu_switch_mm(mm->pgd, mm);
+
+ /*
+ * Restore per-cpu offset before any kernel
+diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
+index caffb10e7aa3..5607693f35cf 100644
+--- a/arch/powerpc/kernel/rtas.c
++++ b/arch/powerpc/kernel/rtas.c
+@@ -1041,6 +1041,9 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
++ if (!rtas.entry)
++ return -EINVAL;
++
+ if (copy_from_user(&args, uargs, 3 * sizeof(u32)) != 0)
+ return -EFAULT;
+
+diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
+index 0cdc154a22b5..4c3f76b425c1 100644
+--- a/arch/x86/boot/compressed/eboot.c
++++ b/arch/x86/boot/compressed/eboot.c
+@@ -667,6 +667,7 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
+ bool conout_found = false;
+ void *dummy = NULL;
+ u32 h = handles[i];
++ u32 current_fb_base;
+
+ status = efi_call_early(handle_protocol, h,
+ proto, (void **)&gop32);
+@@ -678,7 +679,7 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
+ if (status == EFI_SUCCESS)
+ conout_found = true;
+
+- status = __gop_query32(gop32, &info, &size, &fb_base);
++ status = __gop_query32(gop32, &info, &size, ¤t_fb_base);
+ if (status == EFI_SUCCESS && (!first_gop || conout_found)) {
+ /*
+ * Systems that use the UEFI Console Splitter may
+@@ -692,6 +693,7 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
+ pixel_format = info->pixel_format;
+ pixel_info = info->pixel_information;
+ pixels_per_scan_line = info->pixels_per_scan_line;
++ fb_base = current_fb_base;
+
+ /*
+ * Once we've found a GOP supporting ConOut,
+@@ -770,6 +772,7 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
+ bool conout_found = false;
+ void *dummy = NULL;
+ u64 h = handles[i];
++ u32 current_fb_base;
+
+ status = efi_call_early(handle_protocol, h,
+ proto, (void **)&gop64);
+@@ -781,7 +784,7 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
+ if (status == EFI_SUCCESS)
+ conout_found = true;
+
+- status = __gop_query64(gop64, &info, &size, &fb_base);
++ status = __gop_query64(gop64, &info, &size, ¤t_fb_base);
+ if (status == EFI_SUCCESS && (!first_gop || conout_found)) {
+ /*
+ * Systems that use the UEFI Console Splitter may
+@@ -795,6 +798,7 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
+ pixel_format = info->pixel_format;
+ pixel_info = info->pixel_information;
+ pixels_per_scan_line = info->pixels_per_scan_line;
++ fb_base = current_fb_base;
+
+ /*
+ * Once we've found a GOP supporting ConOut,
+diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
+index 0cc657160cb6..a10ed8915bf4 100644
+--- a/arch/x86/xen/enlighten.c
++++ b/arch/x86/xen/enlighten.c
+@@ -33,7 +33,7 @@
+ #include <linux/memblock.h>
+ #include <linux/edd.h>
+
+-#ifdef CONFIG_KEXEC_CORE
++#ifdef CONFIG_KEXEC
+ #include <linux/kexec.h>
+ #endif
+
+@@ -1802,7 +1802,7 @@ static struct notifier_block xen_hvm_cpu_notifier = {
+ .notifier_call = xen_hvm_cpu_notify,
+ };
+
+-#ifdef CONFIG_KEXEC_CORE
++#ifdef CONFIG_KEXEC
+ static void xen_hvm_shutdown(void)
+ {
+ native_machine_shutdown();
+@@ -1836,7 +1836,7 @@ static void __init xen_hvm_guest_init(void)
+ x86_init.irqs.intr_init = xen_init_IRQ;
+ xen_hvm_init_time_ops();
+ xen_hvm_init_mmu_ops();
+-#ifdef CONFIG_KEXEC_CORE
++#ifdef CONFIG_KEXEC
+ machine_ops.shutdown = xen_hvm_shutdown;
+ machine_ops.crash_shutdown = xen_hvm_crash_shutdown;
+ #endif
+diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c
+index db201bca1581..523dd10e1751 100644
+--- a/crypto/ablkcipher.c
++++ b/crypto/ablkcipher.c
+@@ -698,7 +698,7 @@ struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
+ err:
+ if (err != -EAGAIN)
+ break;
+- if (signal_pending(current)) {
++ if (fatal_signal_pending(current)) {
+ err = -EINTR;
+ break;
+ }
+diff --git a/crypto/algapi.c b/crypto/algapi.c
+index d2627a3d4ed8..dda720c6ab08 100644
+--- a/crypto/algapi.c
++++ b/crypto/algapi.c
+@@ -337,7 +337,7 @@ static void crypto_wait_for_test(struct crypto_larval *larval)
+ crypto_alg_tested(larval->alg.cra_driver_name, 0);
+ }
+
+- err = wait_for_completion_interruptible(&larval->completion);
++ err = wait_for_completion_killable(&larval->completion);
+ WARN_ON(err);
+
+ out:
+diff --git a/crypto/api.c b/crypto/api.c
+index afe4610afc4b..bbc147cb5dec 100644
+--- a/crypto/api.c
++++ b/crypto/api.c
+@@ -172,7 +172,7 @@ static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg)
+ struct crypto_larval *larval = (void *)alg;
+ long timeout;
+
+- timeout = wait_for_completion_interruptible_timeout(
++ timeout = wait_for_completion_killable_timeout(
+ &larval->completion, 60 * HZ);
+
+ alg = larval->adult;
+@@ -445,7 +445,7 @@ struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask)
+ err:
+ if (err != -EAGAIN)
+ break;
+- if (signal_pending(current)) {
++ if (fatal_signal_pending(current)) {
+ err = -EINTR;
+ break;
+ }
+@@ -562,7 +562,7 @@ void *crypto_alloc_tfm(const char *alg_name,
+ err:
+ if (err != -EAGAIN)
+ break;
+- if (signal_pending(current)) {
++ if (fatal_signal_pending(current)) {
+ err = -EINTR;
+ break;
+ }
+diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
+index 41dfe762b7fb..edf2e3ea1740 100644
+--- a/crypto/crypto_user.c
++++ b/crypto/crypto_user.c
+@@ -381,7 +381,7 @@ static struct crypto_alg *crypto_user_aead_alg(const char *name, u32 type,
+ err = PTR_ERR(alg);
+ if (err != -EAGAIN)
+ break;
+- if (signal_pending(current)) {
++ if (fatal_signal_pending(current)) {
+ err = -EINTR;
+ break;
+ }
+diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
+index 683dff272562..04c0e8f3183c 100644
+--- a/drivers/block/nvme-core.c
++++ b/drivers/block/nvme-core.c
+@@ -590,6 +590,7 @@ static void req_completion(struct nvme_queue *nvmeq, void *ctx,
+ struct nvme_iod *iod = ctx;
+ struct request *req = iod_get_private(iod);
+ struct nvme_cmd_info *cmd_rq = blk_mq_rq_to_pdu(req);
++ bool requeue = false;
+
+ u16 status = le16_to_cpup(&cqe->status) >> 1;
+
+@@ -598,12 +599,13 @@ static void req_completion(struct nvme_queue *nvmeq, void *ctx,
+ && (jiffies - req->start_time) < req->timeout) {
+ unsigned long flags;
+
++ requeue = true;
+ blk_mq_requeue_request(req);
+ spin_lock_irqsave(req->q->queue_lock, flags);
+ if (!blk_queue_stopped(req->q))
+ blk_mq_kick_requeue_list(req->q);
+ spin_unlock_irqrestore(req->q->queue_lock, flags);
+- return;
++ goto release_iod;
+ }
+ req->errors = nvme_error_status(status);
+ } else
+@@ -613,7 +615,7 @@ static void req_completion(struct nvme_queue *nvmeq, void *ctx,
+ dev_warn(&nvmeq->dev->pci_dev->dev,
+ "completing aborted command with status:%04x\n",
+ status);
+-
++ release_iod:
+ if (iod->nents) {
+ dma_unmap_sg(&nvmeq->dev->pci_dev->dev, iod->sg, iod->nents,
+ rq_data_dir(req) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+@@ -626,7 +628,8 @@ static void req_completion(struct nvme_queue *nvmeq, void *ctx,
+ }
+ nvme_free_iod(nvmeq->dev, iod);
+
+- blk_mq_complete_request(req);
++ if (likely(!requeue))
++ blk_mq_complete_request(req);
+ }
+
+ /* length is in bytes. gfp flags indicates whether we may sleep. */
+diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
+index fe8f1e4b4c7c..1ec6441fe2a5 100644
+--- a/drivers/block/rbd.c
++++ b/drivers/block/rbd.c
+@@ -96,6 +96,8 @@ static int atomic_dec_return_safe(atomic_t *v)
+ #define RBD_MINORS_PER_MAJOR 256
+ #define RBD_SINGLE_MAJOR_PART_SHIFT 4
+
++#define RBD_MAX_PARENT_CHAIN_LEN 16
++
+ #define RBD_SNAP_DEV_NAME_PREFIX "snap_"
+ #define RBD_MAX_SNAP_NAME_LEN \
+ (NAME_MAX - (sizeof (RBD_SNAP_DEV_NAME_PREFIX) - 1))
+@@ -425,7 +427,7 @@ static ssize_t rbd_add_single_major(struct bus_type *bus, const char *buf,
+ size_t count);
+ static ssize_t rbd_remove_single_major(struct bus_type *bus, const char *buf,
+ size_t count);
+-static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool mapping);
++static int rbd_dev_image_probe(struct rbd_device *rbd_dev, int depth);
+ static void rbd_spec_put(struct rbd_spec *spec);
+
+ static int rbd_dev_id_to_minor(int dev_id)
+@@ -3797,6 +3799,9 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
+ q->limits.discard_zeroes_data = 1;
+
+ blk_queue_merge_bvec(q, rbd_merge_bvec);
++ if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
++ q->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES;
++
+ disk->queue = q;
+
+ q->queuedata = rbd_dev;
+@@ -5142,44 +5147,50 @@ out_err:
+ return ret;
+ }
+
+-static int rbd_dev_probe_parent(struct rbd_device *rbd_dev)
++/*
++ * @depth is rbd_dev_image_probe() -> rbd_dev_probe_parent() ->
++ * rbd_dev_image_probe() recursion depth, which means it's also the
++ * length of the already discovered part of the parent chain.
++ */
++static int rbd_dev_probe_parent(struct rbd_device *rbd_dev, int depth)
+ {
+ struct rbd_device *parent = NULL;
+- struct rbd_spec *parent_spec;
+- struct rbd_client *rbdc;
+ int ret;
+
+ if (!rbd_dev->parent_spec)
+ return 0;
+- /*
+- * We need to pass a reference to the client and the parent
+- * spec when creating the parent rbd_dev. Images related by
+- * parent/child relationships always share both.
+- */
+- parent_spec = rbd_spec_get(rbd_dev->parent_spec);
+- rbdc = __rbd_get_client(rbd_dev->rbd_client);
+
+- ret = -ENOMEM;
+- parent = rbd_dev_create(rbdc, parent_spec);
+- if (!parent)
++ if (++depth > RBD_MAX_PARENT_CHAIN_LEN) {
++ pr_info("parent chain is too long (%d)\n", depth);
++ ret = -EINVAL;
+ goto out_err;
++ }
+
+- ret = rbd_dev_image_probe(parent, false);
++ parent = rbd_dev_create(rbd_dev->rbd_client, rbd_dev->parent_spec);
++ if (!parent) {
++ ret = -ENOMEM;
++ goto out_err;
++ }
++
++ /*
++ * Images related by parent/child relationships always share
++ * rbd_client and spec/parent_spec, so bump their refcounts.
++ */
++ __rbd_get_client(rbd_dev->rbd_client);
++ rbd_spec_get(rbd_dev->parent_spec);
++
++ ret = rbd_dev_image_probe(parent, depth);
+ if (ret < 0)
+ goto out_err;
++
+ rbd_dev->parent = parent;
+ atomic_set(&rbd_dev->parent_ref, 1);
+-
+ return 0;
++
+ out_err:
+- if (parent) {
+- rbd_dev_unparent(rbd_dev);
++ rbd_dev_unparent(rbd_dev);
++ if (parent)
+ rbd_dev_destroy(parent);
+- } else {
+- rbd_put_client(rbdc);
+- rbd_spec_put(parent_spec);
+- }
+-
+ return ret;
+ }
+
+@@ -5297,7 +5308,7 @@ static void rbd_dev_image_release(struct rbd_device *rbd_dev)
+ * parent), initiate a watch on its header object before using that
+ * object to get detailed information about the rbd image.
+ */
+-static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool mapping)
++static int rbd_dev_image_probe(struct rbd_device *rbd_dev, int depth)
+ {
+ int ret;
+
+@@ -5315,7 +5326,7 @@ static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool mapping)
+ if (ret)
+ goto err_out_format;
+
+- if (mapping) {
++ if (!depth) {
+ ret = rbd_dev_header_watch_sync(rbd_dev);
+ if (ret) {
+ if (ret == -ENOENT)
+@@ -5336,7 +5347,7 @@ static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool mapping)
+ * Otherwise this is a parent image, identified by pool, image
+ * and snap ids - need to fill in names for those ids.
+ */
+- if (mapping)
++ if (!depth)
+ ret = rbd_spec_fill_snap_id(rbd_dev);
+ else
+ ret = rbd_spec_fill_names(rbd_dev);
+@@ -5358,12 +5369,12 @@ static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool mapping)
+ * Need to warn users if this image is the one being
+ * mapped and has a parent.
+ */
+- if (mapping && rbd_dev->parent_spec)
++ if (!depth && rbd_dev->parent_spec)
+ rbd_warn(rbd_dev,
+ "WARNING: kernel layering is EXPERIMENTAL!");
+ }
+
+- ret = rbd_dev_probe_parent(rbd_dev);
++ ret = rbd_dev_probe_parent(rbd_dev, depth);
+ if (ret)
+ goto err_out_probe;
+
+@@ -5374,7 +5385,7 @@ static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool mapping)
+ err_out_probe:
+ rbd_dev_unprobe(rbd_dev);
+ err_out_watch:
+- if (mapping)
++ if (!depth)
+ rbd_dev_header_unwatch_sync(rbd_dev);
+ out_header_name:
+ kfree(rbd_dev->header_name);
+@@ -5439,7 +5450,7 @@ static ssize_t do_rbd_add(struct bus_type *bus,
+ rbdc = NULL; /* rbd_dev now owns this */
+ spec = NULL; /* rbd_dev now owns this */
+
+- rc = rbd_dev_image_probe(rbd_dev, true);
++ rc = rbd_dev_image_probe(rbd_dev, 0);
+ if (rc < 0)
+ goto err_out_rbd_dev;
+
+diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
+index 89c7371ab2dc..42ef86c409b6 100644
+--- a/drivers/block/xen-blkfront.c
++++ b/drivers/block/xen-blkfront.c
+@@ -1925,7 +1925,8 @@ static void blkback_changed(struct xenbus_device *dev,
+ break;
+ /* Missed the backend's Closing state -- fallthrough */
+ case XenbusStateClosing:
+- blkfront_closing(info);
++ if (info)
++ blkfront_closing(info);
+ break;
+ }
+ }
+diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
+index e8d16997c5cb..1ee2ab58e37d 100644
+--- a/drivers/cpufreq/intel_pstate.c
++++ b/drivers/cpufreq/intel_pstate.c
+@@ -761,6 +761,11 @@ static inline void intel_pstate_sample(struct cpudata *cpu)
+ local_irq_save(flags);
+ rdmsrl(MSR_IA32_APERF, aperf);
+ rdmsrl(MSR_IA32_MPERF, mperf);
++ if (cpu->prev_mperf == mperf) {
++ local_irq_restore(flags);
++ return;
++ }
++
+ local_irq_restore(flags);
+
+ cpu->last_sample_time = cpu->sample.time;
+diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
+index 1acf57ba4c86..cd6b9c72c8ac 100644
+--- a/drivers/edac/sb_edac.c
++++ b/drivers/edac/sb_edac.c
+@@ -1608,6 +1608,7 @@ static int sbridge_mci_bind_devs(struct mem_ctl_info *mci,
+ {
+ struct sbridge_pvt *pvt = mci->pvt_info;
+ struct pci_dev *pdev;
++ u8 saw_chan_mask = 0;
+ int i;
+
+ for (i = 0; i < sbridge_dev->n_devs; i++) {
+@@ -1641,6 +1642,7 @@ static int sbridge_mci_bind_devs(struct mem_ctl_info *mci,
+ {
+ int id = pdev->device - PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0;
+ pvt->pci_tad[id] = pdev;
++ saw_chan_mask |= 1 << id;
+ }
+ break;
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO:
+@@ -1661,10 +1663,8 @@ static int sbridge_mci_bind_devs(struct mem_ctl_info *mci,
+ !pvt-> pci_tad || !pvt->pci_ras || !pvt->pci_ta)
+ goto enodev;
+
+- for (i = 0; i < NUM_CHANNELS; i++) {
+- if (!pvt->pci_tad[i])
+- goto enodev;
+- }
++ if (saw_chan_mask != 0x0f)
++ goto enodev;
+ return 0;
+
+ enodev:
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 2a2eb96caeda..109e776345d3 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -1179,17 +1179,18 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_
+
+ list_for_each_entry(port, &mstb->ports, next) {
+ if (port->port_num == port_num) {
+- if (!port->mstb) {
++ mstb = port->mstb;
++ if (!mstb) {
+ DRM_ERROR("failed to lookup MSTB with lct %d, rad %02x\n", lct, rad[0]);
+- return NULL;
++ goto out;
+ }
+
+- mstb = port->mstb;
+ break;
+ }
+ }
+ }
+ kref_get(&mstb->kref);
++out:
+ mutex_unlock(&mgr->lock);
+ return mstb;
+ }
+diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c
+index 1719078c763a..ce175d05260b 100644
+--- a/drivers/gpu/drm/i915/i915_gem_userptr.c
++++ b/drivers/gpu/drm/i915/i915_gem_userptr.c
+@@ -776,7 +776,10 @@ static const struct drm_i915_gem_object_ops i915_gem_userptr_ops = {
+ * Also note, that the object created here is not currently a "first class"
+ * object, in that several ioctls are banned. These are the CPU access
+ * ioctls: mmap(), pwrite and pread. In practice, you are expected to use
+- * direct access via your pointer rather than use those ioctls.
++ * direct access via your pointer rather than use those ioctls. Another
++ * restriction is that we do not allow userptr surfaces to be pinned to the
++ * hardware and so we reject any attempt to create a framebuffer out of a
++ * userptr.
+ *
+ * If you think this is a good interface to use to pass GPU memory between
+ * drivers, please use dma-buf instead. In fact, wherever possible use
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index f208bbc6d58e..7b27a114b030 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -1699,6 +1699,8 @@ static void i9xx_enable_pll(struct intel_crtc *crtc)
+ I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
+ }
+
++ I915_WRITE(reg, dpll);
++
+ /* Wait for the clocks to stabilize. */
+ POSTING_READ(reg);
+ udelay(150);
+@@ -13212,6 +13214,11 @@ static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ struct drm_i915_gem_object *obj = intel_fb->obj;
+
++ if (obj->userptr.mm) {
++ DRM_DEBUG("attempting to use a userptr for a framebuffer, denied\n");
++ return -EINVAL;
++ }
++
+ return drm_gem_handle_create(file, &obj->base, handle);
+ }
+
+diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
+index 9ab7c1c758ae..72f1bb8b0499 100644
+--- a/drivers/gpu/drm/i915/intel_lrc.c
++++ b/drivers/gpu/drm/i915/intel_lrc.c
+@@ -1298,6 +1298,7 @@ static int gen8_emit_flush_render(struct intel_ringbuffer *ringbuf,
+ if (flush_domains) {
+ flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH;
+ flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH;
++ flags |= PIPE_CONTROL_FLUSH_ENABLE;
+ }
+
+ if (invalidate_domains) {
+diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
+index 005b5e04de4d..b7e20dee64c4 100644
+--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
++++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
+@@ -342,6 +342,7 @@ gen7_render_ring_flush(struct intel_engine_cs *ring,
+ if (flush_domains) {
+ flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH;
+ flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH;
++ flags |= PIPE_CONTROL_FLUSH_ENABLE;
+ }
+ if (invalidate_domains) {
+ flags |= PIPE_CONTROL_TLB_INVALIDATE;
+@@ -412,6 +413,7 @@ gen8_render_ring_flush(struct intel_engine_cs *ring,
+ if (flush_domains) {
+ flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH;
+ flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH;
++ flags |= PIPE_CONTROL_FLUSH_ENABLE;
+ }
+ if (invalidate_domains) {
+ flags |= PIPE_CONTROL_TLB_INVALIDATE;
+diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
+index 0e690bf19fc9..58c959265b1a 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
++++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
+@@ -227,11 +227,12 @@ nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
+ struct nouveau_bo *nvbo = nouveau_gem_object(gem);
+ struct nvkm_vma *vma;
+
+- if (nvbo->bo.mem.mem_type == TTM_PL_TT)
++ if (is_power_of_2(nvbo->valid_domains))
++ rep->domain = nvbo->valid_domains;
++ else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
+ rep->domain = NOUVEAU_GEM_DOMAIN_GART;
+ else
+ rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
+-
+ rep->offset = nvbo->bo.offset;
+ if (cli->vm) {
+ vma = nouveau_bo_vma_find(nvbo, cli->vm);
+diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
+index b4ff4c134fbb..5be50ef2b30e 100644
+--- a/drivers/gpu/drm/radeon/atombios_encoders.c
++++ b/drivers/gpu/drm/radeon/atombios_encoders.c
+@@ -237,6 +237,7 @@ void radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,
+ backlight_update_status(bd);
+
+ DRM_INFO("radeon atom DIG backlight initialized\n");
++ rdev->mode_info.bl_encoder = radeon_encoder;
+
+ return;
+
+@@ -1624,9 +1625,14 @@ radeon_atom_encoder_dpms_avivo(struct drm_encoder *encoder, int mode)
+ } else
+ atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+- struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
++ if (rdev->mode_info.bl_encoder) {
++ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+
+- atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
++ atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
++ } else {
++ args.ucAction = ATOM_LCD_BLON;
++ atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
++ }
+ }
+ break;
+ case DRM_MODE_DPMS_STANDBY:
+@@ -1706,8 +1712,13 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode)
+ if (ASIC_IS_DCE4(rdev))
+ atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0);
+ }
+- if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
+- atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
++ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
++ if (rdev->mode_info.bl_encoder)
++ atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
++ else
++ atombios_dig_transmitter_setup(encoder,
++ ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
++ }
+ if (ext_encoder)
+ atombios_external_encoder_setup(encoder, ext_encoder, ATOM_ENABLE);
+ break;
+diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
+index 46eb0fa75a61..91c3f60f8bac 100644
+--- a/drivers/gpu/drm/radeon/radeon.h
++++ b/drivers/gpu/drm/radeon/radeon.h
+@@ -1656,6 +1656,7 @@ struct radeon_pm {
+ u8 fan_max_rpm;
+ /* dpm */
+ bool dpm_enabled;
++ bool sysfs_initialized;
+ struct radeon_dpm dpm;
+ };
+
+diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
+index ef99917f000d..c6ee80216cf4 100644
+--- a/drivers/gpu/drm/radeon/radeon_encoders.c
++++ b/drivers/gpu/drm/radeon/radeon_encoders.c
+@@ -194,7 +194,6 @@ static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder,
+ radeon_atom_backlight_init(radeon_encoder, connector);
+ else
+ radeon_legacy_backlight_init(radeon_encoder, connector);
+- rdev->mode_info.bl_encoder = radeon_encoder;
+ }
+ }
+
+diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+index 45715307db71..30de43366eae 100644
+--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
++++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+@@ -441,6 +441,7 @@ void radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
+ backlight_update_status(bd);
+
+ DRM_INFO("radeon legacy LVDS backlight initialized\n");
++ rdev->mode_info.bl_encoder = radeon_encoder;
+
+ return;
+
+diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
+index 948c33105801..91764320c56f 100644
+--- a/drivers/gpu/drm/radeon/radeon_pm.c
++++ b/drivers/gpu/drm/radeon/radeon_pm.c
+@@ -720,10 +720,14 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
+ struct radeon_device *rdev = dev_get_drvdata(dev);
+ umode_t effective_mode = attr->mode;
+
+- /* Skip limit attributes if DPM is not enabled */
++ /* Skip attributes if DPM is not enabled */
+ if (rdev->pm.pm_method != PM_METHOD_DPM &&
+ (attr == &sensor_dev_attr_temp1_crit.dev_attr.attr ||
+- attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr))
++ attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr ||
++ attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
++ attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
++ attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
++ attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
+ return 0;
+
+ /* Skip fan attributes if fan is not present */
+@@ -1529,19 +1533,23 @@ int radeon_pm_late_init(struct radeon_device *rdev)
+
+ if (rdev->pm.pm_method == PM_METHOD_DPM) {
+ if (rdev->pm.dpm_enabled) {
+- ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
+- if (ret)
+- DRM_ERROR("failed to create device file for dpm state\n");
+- ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
+- if (ret)
+- DRM_ERROR("failed to create device file for dpm state\n");
+- /* XXX: these are noops for dpm but are here for backwards compat */
+- ret = device_create_file(rdev->dev, &dev_attr_power_profile);
+- if (ret)
+- DRM_ERROR("failed to create device file for power profile\n");
+- ret = device_create_file(rdev->dev, &dev_attr_power_method);
+- if (ret)
+- DRM_ERROR("failed to create device file for power method\n");
++ if (!rdev->pm.sysfs_initialized) {
++ ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
++ if (ret)
++ DRM_ERROR("failed to create device file for dpm state\n");
++ ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
++ if (ret)
++ DRM_ERROR("failed to create device file for dpm state\n");
++ /* XXX: these are noops for dpm but are here for backwards compat */
++ ret = device_create_file(rdev->dev, &dev_attr_power_profile);
++ if (ret)
++ DRM_ERROR("failed to create device file for power profile\n");
++ ret = device_create_file(rdev->dev, &dev_attr_power_method);
++ if (ret)
++ DRM_ERROR("failed to create device file for power method\n");
++ if (!ret)
++ rdev->pm.sysfs_initialized = true;
++ }
+
+ mutex_lock(&rdev->pm.mutex);
+ ret = radeon_dpm_late_enable(rdev);
+@@ -1557,7 +1565,8 @@ int radeon_pm_late_init(struct radeon_device *rdev)
+ }
+ }
+ } else {
+- if (rdev->pm.num_power_states > 1) {
++ if ((rdev->pm.num_power_states > 1) &&
++ (!rdev->pm.sysfs_initialized)) {
+ /* where's the best place to put these? */
+ ret = device_create_file(rdev->dev, &dev_attr_power_profile);
+ if (ret)
+@@ -1565,6 +1574,8 @@ int radeon_pm_late_init(struct radeon_device *rdev)
+ ret = device_create_file(rdev->dev, &dev_attr_power_method);
+ if (ret)
+ DRM_ERROR("failed to create device file for power method\n");
++ if (!ret)
++ rdev->pm.sysfs_initialized = true;
+ }
+ }
+ return ret;
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+index 620bb5cf617c..15a8d7746fd2 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+@@ -1458,6 +1458,9 @@ static void __exit vmwgfx_exit(void)
+ drm_pci_exit(&driver, &vmw_pci_driver);
+ }
+
++MODULE_INFO(vmw_patch, "ed7d78b2");
++MODULE_INFO(vmw_patch, "54c12bc3");
++
+ module_init(vmwgfx_init);
+ module_exit(vmwgfx_exit);
+
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+index d26a6daa9719..d8896ed41b9e 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+@@ -636,7 +636,8 @@ extern int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
+ uint32_t size,
+ bool shareable,
+ uint32_t *handle,
+- struct vmw_dma_buffer **p_dma_buf);
++ struct vmw_dma_buffer **p_dma_buf,
++ struct ttm_base_object **p_base);
+ extern int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
+ struct vmw_dma_buffer *dma_buf,
+ uint32_t *handle);
+@@ -650,7 +651,8 @@ extern uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
+ uint32_t cur_validate_node);
+ extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo);
+ extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
+- uint32_t id, struct vmw_dma_buffer **out);
++ uint32_t id, struct vmw_dma_buffer **out,
++ struct ttm_base_object **base);
+ extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+ extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+index 97ad3bcb99a7..aee1c6ccc52d 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+@@ -887,7 +887,8 @@ static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
+ struct vmw_relocation *reloc;
+ int ret;
+
+- ret = vmw_user_dmabuf_lookup(sw_context->fp->tfile, handle, &vmw_bo);
++ ret = vmw_user_dmabuf_lookup(sw_context->fp->tfile, handle, &vmw_bo,
++ NULL);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Could not find or use MOB buffer.\n");
+ ret = -EINVAL;
+@@ -949,7 +950,8 @@ static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
+ struct vmw_relocation *reloc;
+ int ret;
+
+- ret = vmw_user_dmabuf_lookup(sw_context->fp->tfile, handle, &vmw_bo);
++ ret = vmw_user_dmabuf_lookup(sw_context->fp->tfile, handle, &vmw_bo,
++ NULL);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Could not find or use GMR region.\n");
+ ret = -EINVAL;
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c b/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
+index 87e39f68e9d0..e1898982b44a 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
+@@ -484,7 +484,7 @@ int vmw_overlay_ioctl(struct drm_device *dev, void *data,
+ goto out_unlock;
+ }
+
+- ret = vmw_user_dmabuf_lookup(tfile, arg->handle, &buf);
++ ret = vmw_user_dmabuf_lookup(tfile, arg->handle, &buf, NULL);
+ if (ret)
+ goto out_unlock;
+
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+index 210ef15b1d09..c5b4c47e86d6 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+@@ -356,7 +356,7 @@ int vmw_user_lookup_handle(struct vmw_private *dev_priv,
+ }
+
+ *out_surf = NULL;
+- ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf);
++ ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf, NULL);
+ return ret;
+ }
+
+@@ -483,7 +483,8 @@ int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
+ uint32_t size,
+ bool shareable,
+ uint32_t *handle,
+- struct vmw_dma_buffer **p_dma_buf)
++ struct vmw_dma_buffer **p_dma_buf,
++ struct ttm_base_object **p_base)
+ {
+ struct vmw_user_dma_buffer *user_bo;
+ struct ttm_buffer_object *tmp;
+@@ -517,6 +518,10 @@ int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
+ }
+
+ *p_dma_buf = &user_bo->dma;
++ if (p_base) {
++ *p_base = &user_bo->prime.base;
++ kref_get(&(*p_base)->refcount);
++ }
+ *handle = user_bo->prime.base.hash.key;
+
+ out_no_base_object:
+@@ -633,6 +638,7 @@ int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data,
+ struct vmw_dma_buffer *dma_buf;
+ struct vmw_user_dma_buffer *user_bo;
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
++ struct ttm_base_object *buffer_base;
+ int ret;
+
+ if ((arg->flags & (drm_vmw_synccpu_read | drm_vmw_synccpu_write)) == 0
+@@ -645,7 +651,8 @@ int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data,
+
+ switch (arg->op) {
+ case drm_vmw_synccpu_grab:
+- ret = vmw_user_dmabuf_lookup(tfile, arg->handle, &dma_buf);
++ ret = vmw_user_dmabuf_lookup(tfile, arg->handle, &dma_buf,
++ &buffer_base);
+ if (unlikely(ret != 0))
+ return ret;
+
+@@ -653,6 +660,7 @@ int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data,
+ dma);
+ ret = vmw_user_dmabuf_synccpu_grab(user_bo, tfile, arg->flags);
+ vmw_dmabuf_unreference(&dma_buf);
++ ttm_base_object_unref(&buffer_base);
+ if (unlikely(ret != 0 && ret != -ERESTARTSYS &&
+ ret != -EBUSY)) {
+ DRM_ERROR("Failed synccpu grab on handle 0x%08x.\n",
+@@ -694,7 +702,8 @@ int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
+ return ret;
+
+ ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
+- req->size, false, &handle, &dma_buf);
++ req->size, false, &handle, &dma_buf,
++ NULL);
+ if (unlikely(ret != 0))
+ goto out_no_dmabuf;
+
+@@ -723,7 +732,8 @@ int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
+ }
+
+ int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
+- uint32_t handle, struct vmw_dma_buffer **out)
++ uint32_t handle, struct vmw_dma_buffer **out,
++ struct ttm_base_object **p_base)
+ {
+ struct vmw_user_dma_buffer *vmw_user_bo;
+ struct ttm_base_object *base;
+@@ -745,7 +755,10 @@ int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
+ vmw_user_bo = container_of(base, struct vmw_user_dma_buffer,
+ prime.base);
+ (void)ttm_bo_reference(&vmw_user_bo->dma.base);
+- ttm_base_object_unref(&base);
++ if (p_base)
++ *p_base = base;
++ else
++ ttm_base_object_unref(&base);
+ *out = &vmw_user_bo->dma;
+
+ return 0;
+@@ -1006,7 +1019,7 @@ int vmw_dumb_create(struct drm_file *file_priv,
+
+ ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
+ args->size, false, &args->handle,
+- &dma_buf);
++ &dma_buf, NULL);
+ if (unlikely(ret != 0))
+ goto out_no_dmabuf;
+
+@@ -1034,7 +1047,7 @@ int vmw_dumb_map_offset(struct drm_file *file_priv,
+ struct vmw_dma_buffer *out_buf;
+ int ret;
+
+- ret = vmw_user_dmabuf_lookup(tfile, handle, &out_buf);
++ ret = vmw_user_dmabuf_lookup(tfile, handle, &out_buf, NULL);
+ if (ret != 0)
+ return -EINVAL;
+
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c b/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c
+index 6a4584a43aa6..d2751ada19b1 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c
+@@ -470,7 +470,7 @@ int vmw_shader_define_ioctl(struct drm_device *dev, void *data,
+
+ if (arg->buffer_handle != SVGA3D_INVALID_ID) {
+ ret = vmw_user_dmabuf_lookup(tfile, arg->buffer_handle,
+- &buffer);
++ &buffer, NULL);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Could not find buffer for shader "
+ "creation.\n");
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+index 4ecdbf3e59da..17a4107639b2 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+@@ -43,6 +43,7 @@ struct vmw_user_surface {
+ struct vmw_surface srf;
+ uint32_t size;
+ struct drm_master *master;
++ struct ttm_base_object *backup_base;
+ };
+
+ /**
+@@ -652,6 +653,8 @@ static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
+ struct vmw_resource *res = &user_srf->srf.res;
+
+ *p_base = NULL;
++ if (user_srf->backup_base)
++ ttm_base_object_unref(&user_srf->backup_base);
+ vmw_resource_unreference(&res);
+ }
+
+@@ -846,7 +849,8 @@ int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
+ res->backup_size,
+ true,
+ &backup_handle,
+- &res->backup);
++ &res->backup,
++ &user_srf->backup_base);
+ if (unlikely(ret != 0)) {
+ vmw_resource_unreference(&res);
+ goto out_unlock;
+@@ -1309,7 +1313,8 @@ int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
+
+ if (req->buffer_handle != SVGA3D_INVALID_ID) {
+ ret = vmw_user_dmabuf_lookup(tfile, req->buffer_handle,
+- &res->backup);
++ &res->backup,
++ &user_srf->backup_base);
+ } else if (req->drm_surface_flags &
+ drm_vmw_surface_flag_create_buffer)
+ ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
+@@ -1317,7 +1322,8 @@ int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
+ req->drm_surface_flags &
+ drm_vmw_surface_flag_shareable,
+ &backup_handle,
+- &res->backup);
++ &res->backup,
++ &user_srf->backup_base);
+
+ if (unlikely(ret != 0)) {
+ vmw_resource_unreference(&res);
+diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
+index 30059c1df2a3..5801227b97ab 100644
+--- a/drivers/i2c/busses/i2c-mv64xxx.c
++++ b/drivers/i2c/busses/i2c-mv64xxx.c
+@@ -669,8 +669,6 @@ mv64xxx_i2c_can_offload(struct mv64xxx_i2c_data *drv_data)
+ struct i2c_msg *msgs = drv_data->msgs;
+ int num = drv_data->num_msgs;
+
+- return false;
+-
+ if (!drv_data->offload_enabled)
+ return false;
+
+diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
+index 211b13271c61..2ae7150442fc 100644
+--- a/drivers/iio/accel/st_accel_core.c
++++ b/drivers/iio/accel/st_accel_core.c
+@@ -149,8 +149,6 @@
+ #define ST_ACCEL_4_BDU_MASK 0x40
+ #define ST_ACCEL_4_DRDY_IRQ_ADDR 0x21
+ #define ST_ACCEL_4_DRDY_IRQ_INT1_MASK 0x04
+-#define ST_ACCEL_4_IG1_EN_ADDR 0x21
+-#define ST_ACCEL_4_IG1_EN_MASK 0x08
+ #define ST_ACCEL_4_MULTIREAD_BIT true
+
+ static const struct iio_chan_spec st_accel_12bit_channels[] = {
+@@ -446,10 +444,6 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
+ .drdy_irq = {
+ .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
+ .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
+- .ig1 = {
+- .en_addr = ST_ACCEL_4_IG1_EN_ADDR,
+- .en_mask = ST_ACCEL_4_IG1_EN_MASK,
+- },
+ },
+ .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
+ .bootime = 2, /* guess */
+diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
+index 0271608a51c4..0962b6821ce1 100644
+--- a/drivers/infiniband/core/cm.c
++++ b/drivers/infiniband/core/cm.c
+@@ -859,6 +859,11 @@ retest:
+ case IB_CM_SIDR_REQ_RCVD:
+ spin_unlock_irq(&cm_id_priv->lock);
+ cm_reject_sidr_req(cm_id_priv, IB_SIDR_REJECT);
++ spin_lock_irq(&cm.lock);
++ if (!RB_EMPTY_NODE(&cm_id_priv->sidr_id_node))
++ rb_erase(&cm_id_priv->sidr_id_node,
++ &cm.remote_sidr_table);
++ spin_unlock_irq(&cm.lock);
+ break;
+ case IB_CM_REQ_SENT:
+ case IB_CM_MRA_REQ_RCVD:
+@@ -3098,7 +3103,10 @@ int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
+ spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+
+ spin_lock_irqsave(&cm.lock, flags);
+- rb_erase(&cm_id_priv->sidr_id_node, &cm.remote_sidr_table);
++ if (!RB_EMPTY_NODE(&cm_id_priv->sidr_id_node)) {
++ rb_erase(&cm_id_priv->sidr_id_node, &cm.remote_sidr_table);
++ RB_CLEAR_NODE(&cm_id_priv->sidr_id_node);
++ }
+ spin_unlock_irqrestore(&cm.lock, flags);
+ return 0;
+
+diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
+index bc7eed67998a..4b9e31a5b3f8 100644
+--- a/drivers/input/mouse/alps.c
++++ b/drivers/input/mouse/alps.c
+@@ -100,7 +100,7 @@ static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
+ #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
+ #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
+ 6-byte ALPS packet */
+-#define ALPS_DELL 0x100 /* device is a Dell laptop */
++#define ALPS_STICK_BITS 0x100 /* separate stick button bits */
+ #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
+
+ static const struct alps_model_info alps_model_data[] = {
+@@ -159,6 +159,43 @@ static const struct alps_protocol_info alps_v8_protocol_data = {
+ ALPS_PROTO_V8, 0x18, 0x18, 0
+ };
+
++/*
++ * Some v2 models report the stick buttons in separate bits
++ */
++static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = {
++#if defined(CONFIG_DMI) && defined(CONFIG_X86)
++ {
++ /* Extrapolated from other entries */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
++ DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"),
++ },
++ },
++ {
++ /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
++ DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"),
++ },
++ },
++ {
++ /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
++ DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"),
++ },
++ },
++ {
++ /* Extrapolated from other entries */
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
++ DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"),
++ },
++ },
++#endif
++ { }
++};
++
+ static void alps_set_abs_params_st(struct alps_data *priv,
+ struct input_dev *dev1);
+ static void alps_set_abs_params_mt(struct alps_data *priv,
+@@ -253,9 +290,8 @@ static void alps_process_packet_v1_v2(struct psmouse *psmouse)
+ return;
+ }
+
+- /* Dell non interleaved V2 dualpoint has separate stick button bits */
+- if (priv->proto_version == ALPS_PROTO_V2 &&
+- priv->flags == (ALPS_DELL | ALPS_PASS | ALPS_DUALPOINT)) {
++ /* Some models have separate stick button bits */
++ if (priv->flags & ALPS_STICK_BITS) {
+ left |= packet[0] & 1;
+ right |= packet[0] & 2;
+ middle |= packet[0] & 4;
+@@ -2544,8 +2580,6 @@ static int alps_set_protocol(struct psmouse *psmouse,
+ priv->byte0 = protocol->byte0;
+ priv->mask0 = protocol->mask0;
+ priv->flags = protocol->flags;
+- if (dmi_name_in_vendors("Dell"))
+- priv->flags |= ALPS_DELL;
+
+ priv->x_max = 2000;
+ priv->y_max = 1400;
+@@ -2560,6 +2594,8 @@ static int alps_set_protocol(struct psmouse *psmouse,
+ priv->set_abs_params = alps_set_abs_params_st;
+ priv->x_max = 1023;
+ priv->y_max = 767;
++ if (dmi_check_system(alps_dmi_has_separate_stick_buttons))
++ priv->flags |= ALPS_STICK_BITS;
+ break;
+
+ case ALPS_PROTO_V3:
+diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
+index ca9f4edbb940..f0fd5352f8ef 100644
+--- a/drivers/iommu/amd_iommu.c
++++ b/drivers/iommu/amd_iommu.c
+@@ -2099,8 +2099,8 @@ static void set_dte_entry(u16 devid, struct protection_domain *domain, bool ats)
+ static void clear_dte_entry(u16 devid)
+ {
+ /* remove entry from the device table seen by the hardware */
+- amd_iommu_dev_table[devid].data[0] = IOMMU_PTE_P | IOMMU_PTE_TV;
+- amd_iommu_dev_table[devid].data[1] = 0;
++ amd_iommu_dev_table[devid].data[0] = IOMMU_PTE_P | IOMMU_PTE_TV;
++ amd_iommu_dev_table[devid].data[1] &= DTE_FLAG_MASK;
+
+ amd_iommu_apply_erratum_63(devid);
+ }
+diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
+index 05030e523771..cbfd0f4c4608 100644
+--- a/drivers/iommu/amd_iommu_types.h
++++ b/drivers/iommu/amd_iommu_types.h
+@@ -295,6 +295,7 @@
+ #define IOMMU_PTE_IR (1ULL << 61)
+ #define IOMMU_PTE_IW (1ULL << 62)
+
++#define DTE_FLAG_MASK (0x3ffULL << 32)
+ #define DTE_FLAG_IOTLB (0x01UL << 32)
+ #define DTE_FLAG_GV (0x01ULL << 55)
+ #define DTE_GLX_SHIFT (56)
+diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
+index 3465faf1809e..45087c3e5c57 100644
+--- a/drivers/iommu/amd_iommu_v2.c
++++ b/drivers/iommu/amd_iommu_v2.c
+@@ -508,6 +508,13 @@ static void do_fault(struct work_struct *work)
+ goto out;
+ }
+
++ if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE))) {
++ /* handle_mm_fault would BUG_ON() */
++ up_read(&mm->mmap_sem);
++ handle_fault_error(fault);
++ goto out;
++ }
++
+ ret = handle_mm_fault(mm, vma, address, write);
+ if (ret & VM_FAULT_ERROR) {
+ /* failed to service fault */
+diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
+index c23427951ec1..8b0178db6a04 100644
+--- a/drivers/iommu/intel-iommu.c
++++ b/drivers/iommu/intel-iommu.c
+@@ -2033,15 +2033,19 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn,
+ return -ENOMEM;
+ /* It is large page*/
+ if (largepage_lvl > 1) {
++ unsigned long nr_superpages, end_pfn;
++
+ pteval |= DMA_PTE_LARGE_PAGE;
+ lvl_pages = lvl_to_nr_pages(largepage_lvl);
++
++ nr_superpages = sg_res / lvl_pages;
++ end_pfn = iov_pfn + nr_superpages * lvl_pages - 1;
++
+ /*
+ * Ensure that old small page tables are
+- * removed to make room for superpage,
+- * if they exist.
++ * removed to make room for superpage(s).
+ */
+- dma_pte_free_pagetable(domain, iov_pfn,
+- iov_pfn + lvl_pages - 1);
++ dma_pte_free_pagetable(domain, iov_pfn, end_pfn);
+ } else {
+ pteval &= ~(uint64_t)DMA_PTE_LARGE_PAGE;
+ }
+diff --git a/drivers/irqchip/irq-tegra.c b/drivers/irqchip/irq-tegra.c
+index f67bbd80433e..ab5353a96a82 100644
+--- a/drivers/irqchip/irq-tegra.c
++++ b/drivers/irqchip/irq-tegra.c
+@@ -215,6 +215,7 @@ static struct irq_chip tegra_ictlr_chip = {
+ .irq_unmask = tegra_unmask,
+ .irq_retrigger = tegra_retrigger,
+ .irq_set_wake = tegra_set_wake,
++ .irq_set_type = irq_chip_set_type_parent,
+ .flags = IRQCHIP_MASK_ON_SUSPEND,
+ #ifdef CONFIG_SMP
+ .irq_set_affinity = irq_chip_set_affinity_parent,
+diff --git a/drivers/md/md.c b/drivers/md/md.c
+index e8c44fcb1ad1..78c1f77e7903 100644
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -8013,8 +8013,7 @@ static int remove_and_add_spares(struct mddev *mddev,
+ !test_bit(Bitmap_sync, &rdev->flags)))
+ continue;
+
+- if (rdev->saved_raid_disk < 0)
+- rdev->recovery_offset = 0;
++ rdev->recovery_offset = 0;
+ if (mddev->pers->
+ hot_add_disk(mddev, rdev) == 0) {
+ if (sysfs_link_rdev(mddev, rdev))
+diff --git a/drivers/md/persistent-data/dm-btree-remove.c b/drivers/md/persistent-data/dm-btree-remove.c
+index 7c0d75547ccf..92cd09f3c69b 100644
+--- a/drivers/md/persistent-data/dm-btree-remove.c
++++ b/drivers/md/persistent-data/dm-btree-remove.c
+@@ -301,11 +301,16 @@ static void redistribute3(struct dm_btree_info *info, struct btree_node *parent,
+ {
+ int s;
+ uint32_t max_entries = le32_to_cpu(left->header.max_entries);
+- unsigned target = (nr_left + nr_center + nr_right) / 3;
+- BUG_ON(target > max_entries);
++ unsigned total = nr_left + nr_center + nr_right;
++ unsigned target_right = total / 3;
++ unsigned remainder = (target_right * 3) != total;
++ unsigned target_left = target_right + remainder;
++
++ BUG_ON(target_left > max_entries);
++ BUG_ON(target_right > max_entries);
+
+ if (nr_left < nr_right) {
+- s = nr_left - target;
++ s = nr_left - target_left;
+
+ if (s < 0 && nr_center < -s) {
+ /* not enough in central node */
+@@ -316,10 +321,10 @@ static void redistribute3(struct dm_btree_info *info, struct btree_node *parent,
+ } else
+ shift(left, center, s);
+
+- shift(center, right, target - nr_right);
++ shift(center, right, target_right - nr_right);
+
+ } else {
+- s = target - nr_right;
++ s = target_right - nr_right;
+ if (s > 0 && nr_center < s) {
+ /* not enough in central node */
+ shift(center, right, nr_center);
+@@ -329,7 +334,7 @@ static void redistribute3(struct dm_btree_info *info, struct btree_node *parent,
+ } else
+ shift(center, right, s);
+
+- shift(left, center, nr_left - target);
++ shift(left, center, nr_left - target_left);
+ }
+
+ *key_ptr(parent, c->index) = center->keys[0];
+diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c
+index c7726cebc495..d6e47033b5e0 100644
+--- a/drivers/md/persistent-data/dm-btree.c
++++ b/drivers/md/persistent-data/dm-btree.c
+@@ -523,7 +523,7 @@ static int btree_split_beneath(struct shadow_spine *s, uint64_t key)
+
+ r = new_block(s->info, &right);
+ if (r < 0) {
+- /* FIXME: put left */
++ unlock_block(s->info, left);
+ return r;
+ }
+
+diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
+index 5ce3cd5c4e1d..bff6c1c7fecb 100644
+--- a/drivers/md/raid1.c
++++ b/drivers/md/raid1.c
+@@ -2248,7 +2248,7 @@ static int narrow_write_error(struct r1bio *r1_bio, int i)
+ bio_trim(wbio, sector - r1_bio->sector, sectors);
+ wbio->bi_iter.bi_sector += rdev->data_offset;
+ wbio->bi_bdev = rdev->bdev;
+- if (submit_bio_wait(WRITE, wbio) == 0)
++ if (submit_bio_wait(WRITE, wbio) < 0)
+ /* failure! */
+ ok = rdev_set_badblocks(rdev, sector,
+ sectors, 0)
+diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
+index fe0122771642..adfc83a0f023 100644
+--- a/drivers/md/raid10.c
++++ b/drivers/md/raid10.c
+@@ -2590,7 +2590,7 @@ static int narrow_write_error(struct r10bio *r10_bio, int i)
+ choose_data_offset(r10_bio, rdev) +
+ (sector - r10_bio->sector));
+ wbio->bi_bdev = rdev->bdev;
+- if (submit_bio_wait(WRITE, wbio) == 0)
++ if (submit_bio_wait(WRITE, wbio) < 0)
+ /* Failure! */
+ ok = rdev_set_badblocks(rdev, sector,
+ sectors, 0)
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index 23af6772f146..0d767e31f455 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -3494,6 +3494,7 @@ returnbi:
+ }
+ if (!discard_pending &&
+ test_bit(R5_Discard, &sh->dev[sh->pd_idx].flags)) {
++ int hash;
+ clear_bit(R5_Discard, &sh->dev[sh->pd_idx].flags);
+ clear_bit(R5_UPTODATE, &sh->dev[sh->pd_idx].flags);
+ if (sh->qd_idx >= 0) {
+@@ -3507,16 +3508,17 @@ returnbi:
+ * no updated data, so remove it from hash list and the stripe
+ * will be reinitialized
+ */
+- spin_lock_irq(&conf->device_lock);
+ unhash:
++ hash = sh->hash_lock_index;
++ spin_lock_irq(conf->hash_locks + hash);
+ remove_hash(sh);
++ spin_unlock_irq(conf->hash_locks + hash);
+ if (head_sh->batch_head) {
+ sh = list_first_entry(&sh->batch_list,
+ struct stripe_head, batch_list);
+ if (sh != head_sh)
+ goto unhash;
+ }
+- spin_unlock_irq(&conf->device_lock);
+ sh = head_sh;
+
+ if (test_bit(STRIPE_SYNC_REQUESTED, &sh->state))
+diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
+index 5db588ebfc24..391e98395b41 100644
+--- a/drivers/media/dvb-frontends/si2168.c
++++ b/drivers/media/dvb-frontends/si2168.c
+@@ -457,6 +457,10 @@ static int si2168_init(struct dvb_frontend *fe)
+ /* firmware is in the new format */
+ for (remaining = fw->size; remaining > 0; remaining -= 17) {
+ len = fw->data[fw->size - remaining];
++ if (len > SI2168_ARGLEN) {
++ ret = -EINVAL;
++ break;
++ }
+ memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
+ cmd.wlen = len;
+ cmd.rlen = 1;
+diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
+index d74ae26621ca..c5dbba5b5bc9 100644
+--- a/drivers/media/tuners/si2157.c
++++ b/drivers/media/tuners/si2157.c
+@@ -165,6 +165,10 @@ static int si2157_init(struct dvb_frontend *fe)
+
+ for (remaining = fw->size; remaining > 0; remaining -= 17) {
+ len = fw->data[fw->size - remaining];
++ if (len > SI2157_ARGLEN) {
++ dev_err(&client->dev, "Bad firmware length\n");
++ goto err_release_firmware;
++ }
+ memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
+ cmd.wlen = len;
+ cmd.rlen = 1;
+diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
+index 895441fe90f7..e862554952c1 100644
+--- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
++++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
+@@ -34,6 +34,14 @@ static int rtl28xxu_ctrl_msg(struct dvb_usb_device *d, struct rtl28xxu_req *req)
+ unsigned int pipe;
+ u8 requesttype;
+
++ mutex_lock(&d->usb_mutex);
++
++ if (req->size > sizeof(dev->buf)) {
++ dev_err(&d->intf->dev, "too large message %u\n", req->size);
++ ret = -EINVAL;
++ goto err_mutex_unlock;
++ }
++
+ if (req->index & CMD_WR_FLAG) {
+ /* write */
+ memcpy(dev->buf, req->data, req->size);
+@@ -50,14 +58,17 @@ static int rtl28xxu_ctrl_msg(struct dvb_usb_device *d, struct rtl28xxu_req *req)
+ dvb_usb_dbg_usb_control_msg(d->udev, 0, requesttype, req->value,
+ req->index, dev->buf, req->size);
+ if (ret < 0)
+- goto err;
++ goto err_mutex_unlock;
+
+ /* read request, copy returned data to return buf */
+ if (requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
+ memcpy(req->data, dev->buf, req->size);
+
++ mutex_unlock(&d->usb_mutex);
++
+ return 0;
+-err:
++err_mutex_unlock:
++ mutex_unlock(&d->usb_mutex);
+ dev_dbg(&d->intf->dev, "failed=%d\n", ret);
+ return ret;
+ }
+diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.h b/drivers/media/usb/dvb-usb-v2/rtl28xxu.h
+index 1b5d7ffb685e..1bdeda05d332 100644
+--- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.h
++++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.h
+@@ -69,7 +69,7 @@
+
+
+ struct rtl28xxu_dev {
+- u8 buf[28];
++ u8 buf[128];
+ u8 chip_id;
+ u8 tuner;
+ char *tuner_name;
+diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
+index f8d11efa7b0f..46a389c20bfc 100644
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -874,6 +874,7 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
+ hw->max_rate_tries = 10;
+ hw->sta_data_size = sizeof(struct ath_node);
+ hw->vif_data_size = sizeof(struct ath_vif);
++ hw->extra_tx_headroom = 4;
+
+ hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1;
+ hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1;
+diff --git a/drivers/net/wireless/iwlwifi/dvm/lib.c b/drivers/net/wireless/iwlwifi/dvm/lib.c
+index 1d2223df5cb0..e7d3566c714b 100644
+--- a/drivers/net/wireless/iwlwifi/dvm/lib.c
++++ b/drivers/net/wireless/iwlwifi/dvm/lib.c
+@@ -1022,7 +1022,7 @@ static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
+ u8 *pn = seq.ccmp.pn;
+
+ ieee80211_get_key_rx_seq(key, i, &seq);
+- aes_sc->pn = cpu_to_le64(
++ aes_sc[i].pn = cpu_to_le64(
+ (u64)pn[5] |
+ ((u64)pn[4] << 8) |
+ ((u64)pn[3] << 16) |
+diff --git a/drivers/net/wireless/iwlwifi/iwl-7000.c b/drivers/net/wireless/iwlwifi/iwl-7000.c
+index 74ad278116be..fd83e30eaf00 100644
+--- a/drivers/net/wireless/iwlwifi/iwl-7000.c
++++ b/drivers/net/wireless/iwlwifi/iwl-7000.c
+@@ -325,6 +325,6 @@ const struct iwl_cfg iwl7265d_n_cfg = {
+ };
+
+ MODULE_FIRMWARE(IWL7260_MODULE_FIRMWARE(IWL7260_UCODE_API_OK));
+-MODULE_FIRMWARE(IWL3160_MODULE_FIRMWARE(IWL3160_UCODE_API_OK));
++MODULE_FIRMWARE(IWL3160_MODULE_FIRMWARE(IWL7260_UCODE_API_OK));
+ MODULE_FIRMWARE(IWL7265_MODULE_FIRMWARE(IWL7260_UCODE_API_OK));
+ MODULE_FIRMWARE(IWL7265D_MODULE_FIRMWARE(IWL7260_UCODE_API_OK));
+diff --git a/drivers/net/wireless/iwlwifi/mvm/d3.c b/drivers/net/wireless/iwlwifi/mvm/d3.c
+index 4310cf102d78..89d6a6100c88 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/d3.c
++++ b/drivers/net/wireless/iwlwifi/mvm/d3.c
+@@ -298,12 +298,12 @@ static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
+ u8 *pn = seq.ccmp.pn;
+
+ ieee80211_get_key_rx_seq(key, i, &seq);
+- aes_sc->pn = cpu_to_le64((u64)pn[5] |
+- ((u64)pn[4] << 8) |
+- ((u64)pn[3] << 16) |
+- ((u64)pn[2] << 24) |
+- ((u64)pn[1] << 32) |
+- ((u64)pn[0] << 40));
++ aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
++ ((u64)pn[4] << 8) |
++ ((u64)pn[3] << 16) |
++ ((u64)pn[2] << 24) |
++ ((u64)pn[1] << 32) |
++ ((u64)pn[0] << 40));
+ }
+ data->use_rsc_tsc = true;
+ break;
+diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c
+index df869633f4dd..1e1c77a59760 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/fw.c
++++ b/drivers/net/wireless/iwlwifi/mvm/fw.c
+@@ -364,7 +364,7 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
+ * abort after reading the nvm in case RF Kill is on, we will complete
+ * the init seq later when RF kill will switch to off
+ */
+- if (iwl_mvm_is_radio_killed(mvm)) {
++ if (iwl_mvm_is_radio_hw_killed(mvm)) {
+ IWL_DEBUG_RF_KILL(mvm,
+ "jump over all phy activities due to RF kill\n");
+ iwl_remove_notification(&mvm->notif_wait, &calib_wait);
+@@ -397,7 +397,7 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
+ ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
+ MVM_UCODE_CALIB_TIMEOUT);
+
+- if (ret && iwl_mvm_is_radio_killed(mvm)) {
++ if (ret && iwl_mvm_is_radio_hw_killed(mvm)) {
+ IWL_DEBUG_RF_KILL(mvm, "RFKILL while calibrating.\n");
+ ret = 1;
+ }
+diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+index 60c138a9bf4f..9779c1e5688c 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
++++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+@@ -2277,6 +2277,7 @@ static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
+ iwl_mvm_remove_time_event(mvm, mvmvif,
+ &mvmvif->time_event_data);
+ RCU_INIT_POINTER(mvm->csa_vif, NULL);
++ mvmvif->csa_countdown = false;
+ }
+
+ if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
+diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
+index 6af21daaaaef..83273adfabdd 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
++++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
+@@ -870,6 +870,11 @@ static inline bool iwl_mvm_is_radio_killed(struct iwl_mvm *mvm)
+ test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
+ }
+
++static inline bool iwl_mvm_is_radio_hw_killed(struct iwl_mvm *mvm)
++{
++ return test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
++}
++
+ /* Must be called with rcu_read_lock() held and it can only be
+ * released when mvmsta is not needed anymore.
+ */
+diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c
+index 2ea01238754e..8d4f287dca3b 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/ops.c
++++ b/drivers/net/wireless/iwlwifi/mvm/ops.c
+@@ -589,6 +589,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
+ ieee80211_unregister_hw(mvm->hw);
+ iwl_mvm_leds_exit(mvm);
+ out_free:
++ flush_delayed_work(&mvm->fw_dump_wk);
+ iwl_phy_db_free(mvm->phy_db);
+ kfree(mvm->scan_cmd);
+ if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
+diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c
+index b18569734922..8b16949a9cb9 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/drv.c
++++ b/drivers/net/wireless/iwlwifi/pcie/drv.c
+@@ -412,6 +412,11 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
+ {IWL_PCI_DEVICE(0x095A, 0x5590, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095B, 0x5290, iwl7265_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x095A, 0x5490, iwl7265_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x095A, 0x5F10, iwl7265_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x095B, 0x5212, iwl7265_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x095B, 0x520A, iwl7265_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x095A, 0x9000, iwl7265_2ac_cfg)},
++ {IWL_PCI_DEVICE(0x095A, 0x9400, iwl7265_2ac_cfg)},
+
+ /* 8000 Series */
+ {IWL_PCI_DEVICE(0x24F3, 0x0010, iwl8260_2ac_cfg)},
+diff --git a/drivers/net/wireless/rtlwifi/pci.h b/drivers/net/wireless/rtlwifi/pci.h
+index d4567d12e07e..5da6703942d9 100644
+--- a/drivers/net/wireless/rtlwifi/pci.h
++++ b/drivers/net/wireless/rtlwifi/pci.h
+@@ -247,6 +247,8 @@ struct rtl_pci {
+ /* MSI support */
+ bool msi_support;
+ bool using_msi;
++ /* interrupt clear before set */
++ bool int_clear;
+ };
+
+ struct mp_adapter {
+diff --git a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+index 3fa2fb7c8e4e..76e52dfb2be5 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+@@ -2253,11 +2253,28 @@ void rtl8821ae_set_qos(struct ieee80211_hw *hw, int aci)
+ }
+ }
+
++static void rtl8821ae_clear_interrupt(struct ieee80211_hw *hw)
++{
++ struct rtl_priv *rtlpriv = rtl_priv(hw);
++ u32 tmp = rtl_read_dword(rtlpriv, REG_HISR);
++
++ rtl_write_dword(rtlpriv, REG_HISR, tmp);
++
++ tmp = rtl_read_dword(rtlpriv, REG_HISRE);
++ rtl_write_dword(rtlpriv, REG_HISRE, tmp);
++
++ tmp = rtl_read_dword(rtlpriv, REG_HSISR);
++ rtl_write_dword(rtlpriv, REG_HSISR, tmp);
++}
++
+ void rtl8821ae_enable_interrupt(struct ieee80211_hw *hw)
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
+
++ if (!rtlpci->int_clear)
++ rtl8821ae_clear_interrupt(hw);/*clear it here first*/
++
+ rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] & 0xFFFFFFFF);
+ rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] & 0xFFFFFFFF);
+ rtlpci->irq_enabled = true;
+diff --git a/drivers/net/wireless/rtlwifi/rtl8821ae/sw.c b/drivers/net/wireless/rtlwifi/rtl8821ae/sw.c
+index a4988121e1ab..8ee141a55bc5 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8821ae/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8821ae/sw.c
+@@ -96,6 +96,7 @@ int rtl8821ae_init_sw_vars(struct ieee80211_hw *hw)
+
+ rtl8821ae_bt_reg_init(hw);
+ rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
++ rtlpci->int_clear = rtlpriv->cfg->mod_params->int_clear;
+ rtlpriv->btcoexist.btc_ops = rtl_btc_get_ops_pointer();
+
+ rtlpriv->dm.dm_initialgain_enable = 1;
+@@ -167,6 +168,7 @@ int rtl8821ae_init_sw_vars(struct ieee80211_hw *hw)
+ rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
+ rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
+ rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
++ rtlpci->msi_support = rtlpriv->cfg->mod_params->int_clear;
+ if (rtlpriv->cfg->mod_params->disable_watchdog)
+ pr_info("watchdog disabled\n");
+ rtlpriv->psc.reg_fwctrl_lps = 3;
+@@ -308,6 +310,7 @@ static struct rtl_mod_params rtl8821ae_mod_params = {
+ .swctrl_lps = false,
+ .fwctrl_lps = true,
+ .msi_support = true,
++ .int_clear = true,
+ .debug = DBG_EMERG,
+ .disable_watchdog = 0,
+ };
+@@ -437,6 +440,7 @@ module_param_named(fwlps, rtl8821ae_mod_params.fwctrl_lps, bool, 0444);
+ module_param_named(msi, rtl8821ae_mod_params.msi_support, bool, 0444);
+ module_param_named(disable_watchdog, rtl8821ae_mod_params.disable_watchdog,
+ bool, 0444);
++module_param_named(int_clear, rtl8821ae_mod_params.int_clear, bool, 0444);
+ MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
+ MODULE_PARM_DESC(ips, "Set to 0 to not use link power save (default 1)\n");
+ MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 0)\n");
+@@ -444,6 +448,7 @@ MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 1)\n");
+ MODULE_PARM_DESC(msi, "Set to 1 to use MSI interrupts mode (default 1)\n");
+ MODULE_PARM_DESC(debug, "Set debug level (0-5) (default 0)");
+ MODULE_PARM_DESC(disable_watchdog, "Set to 1 to disable the watchdog (default 0)\n");
++MODULE_PARM_DESC(int_clear, "Set to 1 to disable interrupt clear before set (default 0)\n");
+
+ static SIMPLE_DEV_PM_OPS(rtlwifi_pm_ops, rtl_pci_suspend, rtl_pci_resume);
+
+diff --git a/drivers/net/wireless/rtlwifi/wifi.h b/drivers/net/wireless/rtlwifi/wifi.h
+index 51572912c53d..f1fa8100f288 100644
+--- a/drivers/net/wireless/rtlwifi/wifi.h
++++ b/drivers/net/wireless/rtlwifi/wifi.h
+@@ -2233,6 +2233,9 @@ struct rtl_mod_params {
+
+ /* default 0: 1 means disable */
+ bool disable_watchdog;
++
++ /* default 0: 1 means do not disable interrupts */
++ bool int_clear;
+ };
+
+ struct rtl_hal_usbint_cfg {
+diff --git a/drivers/of/platform.c b/drivers/of/platform.c
+index a01f57c9e34e..ddf8e42c9367 100644
+--- a/drivers/of/platform.c
++++ b/drivers/of/platform.c
+@@ -25,6 +25,7 @@
+
+ const struct of_device_id of_default_bus_match_table[] = {
+ { .compatible = "simple-bus", },
++ { .compatible = "simple-mfd", },
+ #ifdef CONFIG_ARM_AMBA
+ { .compatible = "arm,amba-bus", },
+ #endif /* CONFIG_ARM_AMBA */
+diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
+index 312f23a8429c..92618686604c 100644
+--- a/drivers/pci/pci-sysfs.c
++++ b/drivers/pci/pci-sysfs.c
+@@ -216,7 +216,7 @@ static ssize_t numa_node_store(struct device *dev,
+ if (ret)
+ return ret;
+
+- if (!node_online(node))
++ if (node >= MAX_NUMNODES || !node_online(node))
+ return -EINVAL;
+
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
+diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c
+index 2062c224e32f..b2602210784d 100644
+--- a/drivers/pinctrl/intel/pinctrl-baytrail.c
++++ b/drivers/pinctrl/intel/pinctrl-baytrail.c
+@@ -146,7 +146,7 @@ struct byt_gpio_pin_context {
+ struct byt_gpio {
+ struct gpio_chip chip;
+ struct platform_device *pdev;
+- spinlock_t lock;
++ raw_spinlock_t lock;
+ void __iomem *reg_base;
+ struct pinctrl_gpio_range *range;
+ struct byt_gpio_pin_context *saved_context;
+@@ -174,11 +174,11 @@ static void byt_gpio_clear_triggering(struct byt_gpio *vg, unsigned offset)
+ unsigned long flags;
+ u32 value;
+
+- spin_lock_irqsave(&vg->lock, flags);
++ raw_spin_lock_irqsave(&vg->lock, flags);
+ value = readl(reg);
+ value &= ~(BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL);
+ writel(value, reg);
+- spin_unlock_irqrestore(&vg->lock, flags);
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
+ }
+
+ static u32 byt_get_gpio_mux(struct byt_gpio *vg, unsigned offset)
+@@ -201,6 +201,9 @@ static int byt_gpio_request(struct gpio_chip *chip, unsigned offset)
+ struct byt_gpio *vg = to_byt_gpio(chip);
+ void __iomem *reg = byt_gpio_reg(chip, offset, BYT_CONF0_REG);
+ u32 value, gpio_mux;
++ unsigned long flags;
++
++ raw_spin_lock_irqsave(&vg->lock, flags);
+
+ /*
+ * In most cases, func pin mux 000 means GPIO function.
+@@ -214,18 +217,16 @@ static int byt_gpio_request(struct gpio_chip *chip, unsigned offset)
+ value = readl(reg) & BYT_PIN_MUX;
+ gpio_mux = byt_get_gpio_mux(vg, offset);
+ if (WARN_ON(gpio_mux != value)) {
+- unsigned long flags;
+-
+- spin_lock_irqsave(&vg->lock, flags);
+ value = readl(reg) & ~BYT_PIN_MUX;
+ value |= gpio_mux;
+ writel(value, reg);
+- spin_unlock_irqrestore(&vg->lock, flags);
+
+ dev_warn(&vg->pdev->dev,
+ "pin %u forcibly re-configured as GPIO\n", offset);
+ }
+
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
++
+ pm_runtime_get(&vg->pdev->dev);
+
+ return 0;
+@@ -250,7 +251,7 @@ static int byt_irq_type(struct irq_data *d, unsigned type)
+ if (offset >= vg->chip.ngpio)
+ return -EINVAL;
+
+- spin_lock_irqsave(&vg->lock, flags);
++ raw_spin_lock_irqsave(&vg->lock, flags);
+ value = readl(reg);
+
+ WARN(value & BYT_DIRECT_IRQ_EN,
+@@ -269,7 +270,7 @@ static int byt_irq_type(struct irq_data *d, unsigned type)
+ else if (type & IRQ_TYPE_LEVEL_MASK)
+ __irq_set_handler_locked(d->irq, handle_level_irq);
+
+- spin_unlock_irqrestore(&vg->lock, flags);
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
+
+ return 0;
+ }
+@@ -277,7 +278,15 @@ static int byt_irq_type(struct irq_data *d, unsigned type)
+ static int byt_gpio_get(struct gpio_chip *chip, unsigned offset)
+ {
+ void __iomem *reg = byt_gpio_reg(chip, offset, BYT_VAL_REG);
+- return readl(reg) & BYT_LEVEL;
++ struct byt_gpio *vg = to_byt_gpio(chip);
++ unsigned long flags;
++ u32 val;
++
++ raw_spin_lock_irqsave(&vg->lock, flags);
++ val = readl(reg);
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
++
++ return val & BYT_LEVEL;
+ }
+
+ static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+@@ -287,7 +296,7 @@ static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+ unsigned long flags;
+ u32 old_val;
+
+- spin_lock_irqsave(&vg->lock, flags);
++ raw_spin_lock_irqsave(&vg->lock, flags);
+
+ old_val = readl(reg);
+
+@@ -296,7 +305,7 @@ static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+ else
+ writel(old_val & ~BYT_LEVEL, reg);
+
+- spin_unlock_irqrestore(&vg->lock, flags);
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
+ }
+
+ static int byt_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+@@ -306,13 +315,13 @@ static int byt_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+ unsigned long flags;
+ u32 value;
+
+- spin_lock_irqsave(&vg->lock, flags);
++ raw_spin_lock_irqsave(&vg->lock, flags);
+
+ value = readl(reg) | BYT_DIR_MASK;
+ value &= ~BYT_INPUT_EN; /* active low */
+ writel(value, reg);
+
+- spin_unlock_irqrestore(&vg->lock, flags);
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
+
+ return 0;
+ }
+@@ -326,7 +335,7 @@ static int byt_gpio_direction_output(struct gpio_chip *chip,
+ unsigned long flags;
+ u32 reg_val;
+
+- spin_lock_irqsave(&vg->lock, flags);
++ raw_spin_lock_irqsave(&vg->lock, flags);
+
+ /*
+ * Before making any direction modifications, do a check if gpio
+@@ -345,7 +354,7 @@ static int byt_gpio_direction_output(struct gpio_chip *chip,
+ else
+ writel(reg_val & ~BYT_LEVEL, reg);
+
+- spin_unlock_irqrestore(&vg->lock, flags);
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
+
+ return 0;
+ }
+@@ -354,18 +363,19 @@ static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
+ {
+ struct byt_gpio *vg = to_byt_gpio(chip);
+ int i;
+- unsigned long flags;
+ u32 conf0, val, offs;
+
+- spin_lock_irqsave(&vg->lock, flags);
+-
+ for (i = 0; i < vg->chip.ngpio; i++) {
+ const char *pull_str = NULL;
+ const char *pull = NULL;
++ unsigned long flags;
+ const char *label;
+ offs = vg->range->pins[i] * 16;
++
++ raw_spin_lock_irqsave(&vg->lock, flags);
+ conf0 = readl(vg->reg_base + offs + BYT_CONF0_REG);
+ val = readl(vg->reg_base + offs + BYT_VAL_REG);
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
+
+ label = gpiochip_is_requested(chip, i);
+ if (!label)
+@@ -418,7 +428,6 @@ static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
+
+ seq_puts(s, "\n");
+ }
+- spin_unlock_irqrestore(&vg->lock, flags);
+ }
+
+ static void byt_gpio_irq_handler(unsigned irq, struct irq_desc *desc)
+@@ -450,8 +459,10 @@ static void byt_irq_ack(struct irq_data *d)
+ unsigned offset = irqd_to_hwirq(d);
+ void __iomem *reg;
+
++ raw_spin_lock(&vg->lock);
+ reg = byt_gpio_reg(&vg->chip, offset, BYT_INT_STAT_REG);
+ writel(BIT(offset % 32), reg);
++ raw_spin_unlock(&vg->lock);
+ }
+
+ static void byt_irq_unmask(struct irq_data *d)
+@@ -463,9 +474,9 @@ static void byt_irq_unmask(struct irq_data *d)
+ void __iomem *reg;
+ u32 value;
+
+- spin_lock_irqsave(&vg->lock, flags);
+-
+ reg = byt_gpio_reg(&vg->chip, offset, BYT_CONF0_REG);
++
++ raw_spin_lock_irqsave(&vg->lock, flags);
+ value = readl(reg);
+
+ switch (irqd_get_trigger_type(d)) {
+@@ -486,7 +497,7 @@ static void byt_irq_unmask(struct irq_data *d)
+
+ writel(value, reg);
+
+- spin_unlock_irqrestore(&vg->lock, flags);
++ raw_spin_unlock_irqrestore(&vg->lock, flags);
+ }
+
+ static void byt_irq_mask(struct irq_data *d)
+@@ -578,7 +589,7 @@ static int byt_gpio_probe(struct platform_device *pdev)
+ if (IS_ERR(vg->reg_base))
+ return PTR_ERR(vg->reg_base);
+
+- spin_lock_init(&vg->lock);
++ raw_spin_lock_init(&vg->lock);
+
+ gc = &vg->chip;
+ gc->label = dev_name(&pdev->dev);
+diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
+index 454536c49315..9c780740fb82 100644
+--- a/drivers/scsi/mvsas/mv_sas.c
++++ b/drivers/scsi/mvsas/mv_sas.c
+@@ -887,6 +887,8 @@ static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
+ static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
+ struct mvs_slot_info *slot, u32 slot_idx)
+ {
++ if (!slot)
++ return;
+ if (!slot->task)
+ return;
+ if (!sas_protocol_ata(task->task_proto))
+diff --git a/drivers/staging/iio/accel/sca3000_ring.c b/drivers/staging/iio/accel/sca3000_ring.c
+index 8589eade1057..de65a8730d88 100644
+--- a/drivers/staging/iio/accel/sca3000_ring.c
++++ b/drivers/staging/iio/accel/sca3000_ring.c
+@@ -116,7 +116,7 @@ static int sca3000_read_first_n_hw_rb(struct iio_buffer *r,
+ if (ret)
+ goto error_ret;
+
+- for (i = 0; i < num_read; i++)
++ for (i = 0; i < num_read / sizeof(u16); i++)
+ *(((u16 *)rx) + i) = be16_to_cpup((__be16 *)rx + i);
+
+ if (copy_to_user(buf, rx, num_read))
+diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
+index d7c5223f1c3e..2931ea9b75d1 100644
+--- a/drivers/staging/iio/adc/mxs-lradc.c
++++ b/drivers/staging/iio/adc/mxs-lradc.c
+@@ -919,11 +919,12 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev,
+ case IIO_CHAN_INFO_OFFSET:
+ if (chan->type == IIO_TEMP) {
+ /* The calculated value from the ADC is in Kelvin, we
+- * want Celsius for hwmon so the offset is
+- * -272.15 * scale
++ * want Celsius for hwmon so the offset is -273.15
++ * The offset is applied before scaling so it is
++ * actually -213.15 * 4 / 1.012 = -1079.644268
+ */
+- *val = -1075;
+- *val2 = 691699;
++ *val = -1079;
++ *val2 = 644268;
+
+ return IIO_VAL_INT_PLUS_MICRO;
+ }
+diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c
+index 21d01a491405..e508939daea3 100644
+--- a/drivers/tty/serial/8250/8250_dma.c
++++ b/drivers/tty/serial/8250/8250_dma.c
+@@ -80,10 +80,6 @@ int serial8250_tx_dma(struct uart_8250_port *p)
+ return 0;
+
+ dma->tx_size = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
+- if (dma->tx_size < p->port.fifosize) {
+- ret = -EINVAL;
+- goto err;
+- }
+
+ desc = dmaengine_prep_slave_single(dma->txchan,
+ dma->tx_addr + xmit->tail,
+diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
+index 9373cca121d3..eb8adc2e68c1 100644
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -1998,6 +1998,7 @@ pci_wch_ch38x_setup(struct serial_private *priv,
+ #define PCIE_DEVICE_ID_WCH_CH382_2S1P 0x3250
+ #define PCIE_DEVICE_ID_WCH_CH384_4S 0x3470
+
++#define PCI_DEVICE_ID_EXAR_XR17V4358 0x4358
+ #define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358
+
+ #define PCI_VENDOR_ID_PERICOM 0x12D8
+@@ -2515,6 +2516,13 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
+ },
+ {
+ .vendor = PCI_VENDOR_ID_EXAR,
++ .device = PCI_DEVICE_ID_EXAR_XR17V4358,
++ .subvendor = PCI_ANY_ID,
++ .subdevice = PCI_ANY_ID,
++ .setup = pci_xr17v35x_setup,
++ },
++ {
++ .vendor = PCI_VENDOR_ID_EXAR,
+ .device = PCI_DEVICE_ID_EXAR_XR17V8358,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+@@ -2999,6 +3007,7 @@ enum pci_board_num_t {
+ pbn_exar_XR17V352,
+ pbn_exar_XR17V354,
+ pbn_exar_XR17V358,
++ pbn_exar_XR17V4358,
+ pbn_exar_XR17V8358,
+ pbn_exar_ibm_saturn,
+ pbn_pasemi_1682M,
+@@ -3690,6 +3699,14 @@ static struct pciserial_board pci_boards[] = {
+ .reg_shift = 0,
+ .first_offset = 0,
+ },
++ [pbn_exar_XR17V4358] = {
++ .flags = FL_BASE0,
++ .num_ports = 12,
++ .base_baud = 7812500,
++ .uart_offset = 0x400,
++ .reg_shift = 0,
++ .first_offset = 0,
++ },
+ [pbn_exar_XR17V8358] = {
+ .flags = FL_BASE0,
+ .num_ports = 16,
+@@ -5133,6 +5150,10 @@ static struct pci_device_id serial_pci_tbl[] = {
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0,
+ 0, pbn_exar_XR17V358 },
++ { PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17V4358,
++ PCI_ANY_ID, PCI_ANY_ID,
++ 0,
++ 0, pbn_exar_XR17V4358 },
+ { PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17V8358,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0,
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index 2af32e26fafc..7e5c90eebb9c 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -135,6 +135,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+ pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) {
+ xhci->quirks |= XHCI_SPURIOUS_REBOOT;
++ xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
+ }
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+ (pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index ad975a2975ca..41d7a05f8af4 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -2239,6 +2239,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
+ u32 trb_comp_code;
+ int ret = 0;
+ int td_num = 0;
++ bool handling_skipped_tds = false;
+
+ slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags));
+ xdev = xhci->devs[slot_id];
+@@ -2372,6 +2373,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
+ ep->skip = true;
+ xhci_dbg(xhci, "Miss service interval error, set skip flag\n");
+ goto cleanup;
++ case COMP_PING_ERR:
++ ep->skip = true;
++ xhci_dbg(xhci, "No Ping response error, Skip one Isoc TD\n");
++ goto cleanup;
+ default:
+ if (xhci_is_vendor_info_code(xhci, trb_comp_code)) {
+ status = 0;
+@@ -2508,13 +2513,18 @@ static int handle_tx_event(struct xhci_hcd *xhci,
+ ep, &status);
+
+ cleanup:
++
++
++ handling_skipped_tds = ep->skip &&
++ trb_comp_code != COMP_MISSED_INT &&
++ trb_comp_code != COMP_PING_ERR;
++
+ /*
+- * Do not update event ring dequeue pointer if ep->skip is set.
+- * Will roll back to continue process missed tds.
++ * Do not update event ring dequeue pointer if we're in a loop
++ * processing missed tds.
+ */
+- if (trb_comp_code == COMP_MISSED_INT || !ep->skip) {
++ if (!handling_skipped_tds)
+ inc_deq(xhci, xhci->event_ring);
+- }
+
+ if (ret) {
+ urb = td->urb;
+@@ -2549,7 +2559,7 @@ cleanup:
+ * Process them as short transfer until reach the td pointed by
+ * the event.
+ */
+- } while (ep->skip && trb_comp_code != COMP_MISSED_INT);
++ } while (handling_skipped_tds);
+
+ return 0;
+ }
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index ebcec8cda858..f49d262e926b 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -153,6 +153,8 @@ static const struct usb_device_id id_table[] = {
+ {DEVICE_SWI(0x1199, 0x9056)}, /* Sierra Wireless Modem */
+ {DEVICE_SWI(0x1199, 0x9060)}, /* Sierra Wireless Modem */
+ {DEVICE_SWI(0x1199, 0x9061)}, /* Sierra Wireless Modem */
++ {DEVICE_SWI(0x1199, 0x9070)}, /* Sierra Wireless MC74xx/EM74xx */
++ {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx/EM74xx */
+ {DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index af3dd3c55ef1..8b2c82ce36b3 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -4494,7 +4494,7 @@ locked:
+
+ if (bctl->flags & ~(BTRFS_BALANCE_ARGS_MASK | BTRFS_BALANCE_TYPE_MASK)) {
+ ret = -EINVAL;
+- goto out_bargs;
++ goto out_bctl;
+ }
+
+ do_balance:
+@@ -4508,12 +4508,15 @@ do_balance:
+ need_unlock = false;
+
+ ret = btrfs_balance(bctl, bargs);
++ bctl = NULL;
+
+ if (arg) {
+ if (copy_to_user(arg, bargs, sizeof(*bargs)))
+ ret = -EFAULT;
+ }
+
++out_bctl:
++ kfree(bctl);
+ out_bargs:
+ kfree(bargs);
+ out_unlock:
+diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
+index 84d693d37428..871fcb67be97 100644
+--- a/fs/overlayfs/copy_up.c
++++ b/fs/overlayfs/copy_up.c
+@@ -81,11 +81,11 @@ static int ovl_copy_up_data(struct path *old, struct path *new, loff_t len)
+ if (len == 0)
+ return 0;
+
+- old_file = ovl_path_open(old, O_RDONLY);
++ old_file = ovl_path_open(old, O_LARGEFILE | O_RDONLY);
+ if (IS_ERR(old_file))
+ return PTR_ERR(old_file);
+
+- new_file = ovl_path_open(new, O_WRONLY);
++ new_file = ovl_path_open(new, O_LARGEFILE | O_WRONLY);
+ if (IS_ERR(new_file)) {
+ error = PTR_ERR(new_file);
+ goto out_fput;
+@@ -267,7 +267,7 @@ out:
+
+ out_cleanup:
+ ovl_cleanup(wdir, newdentry);
+- goto out;
++ goto out2;
+ }
+
+ /*
+diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
+index 33f2d27a6792..d74af7f78fec 100644
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -474,6 +474,7 @@ static void ovl_put_super(struct super_block *sb)
+ mntput(ufs->upper_mnt);
+ for (i = 0; i < ufs->numlower; i++)
+ mntput(ufs->lower_mnt[i]);
++ kfree(ufs->lower_mnt);
+
+ kfree(ufs->config.lowerdir);
+ kfree(ufs->config.upperdir);
+@@ -981,6 +982,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
+ oe->lowerstack[i].dentry = stack[i].dentry;
+ oe->lowerstack[i].mnt = ufs->lower_mnt[i];
+ }
++ kfree(stack);
+
+ root_dentry->d_fsdata = oe;
+
+diff --git a/include/sound/soc.h b/include/sound/soc.h
+index f6226914acfe..8d948aa9c5c9 100644
+--- a/include/sound/soc.h
++++ b/include/sound/soc.h
+@@ -85,7 +85,7 @@
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
+ SNDRV_CTL_ELEM_ACCESS_READWRITE, \
+ .tlv.p = (tlv_array),\
+- .info = snd_soc_info_volsw, \
++ .info = snd_soc_info_volsw_sx, \
+ .get = snd_soc_get_volsw_sx,\
+ .put = snd_soc_put_volsw_sx, \
+ .private_value = (unsigned long)&(struct soc_mixer_control) \
+@@ -155,7 +155,7 @@
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
+ SNDRV_CTL_ELEM_ACCESS_READWRITE, \
+ .tlv.p = (tlv_array), \
+- .info = snd_soc_info_volsw, \
++ .info = snd_soc_info_volsw_sx, \
+ .get = snd_soc_get_volsw_sx, \
+ .put = snd_soc_put_volsw_sx, \
+ .private_value = (unsigned long)&(struct soc_mixer_control) \
+@@ -563,6 +563,8 @@ int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+ int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
++int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo);
+ #define snd_soc_info_bool_ext snd_ctl_boolean_mono_info
+ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+diff --git a/include/sound/wm8904.h b/include/sound/wm8904.h
+index 898be3a8db9a..6d8f8fba3341 100644
+--- a/include/sound/wm8904.h
++++ b/include/sound/wm8904.h
+@@ -119,7 +119,7 @@
+ #define WM8904_MIC_REGS 2
+ #define WM8904_GPIO_REGS 4
+ #define WM8904_DRC_REGS 4
+-#define WM8904_EQ_REGS 25
++#define WM8904_EQ_REGS 24
+
+ /**
+ * DRC configurations are specified with a label and a set of register
+diff --git a/kernel/module.c b/kernel/module.c
+index cfc9e843a924..3b9ff966edb9 100644
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -906,11 +906,15 @@ void symbol_put_addr(void *addr)
+ if (core_kernel_text(a))
+ return;
+
+- /* module_text_address is safe here: we're supposed to have reference
+- * to module from symbol_get, so it can't go away. */
++ /*
++ * Even though we hold a reference on the module; we still need to
++ * disable preemption in order to safely traverse the data structure.
++ */
++ preempt_disable();
+ modaddr = __module_text_address(a);
+ BUG_ON(!modaddr);
+ module_put(modaddr);
++ preempt_enable();
+ }
+ EXPORT_SYMBOL_GPL(symbol_put_addr);
+
+diff --git a/lib/fault-inject.c b/lib/fault-inject.c
+index f1cdeb024d17..6a823a53e357 100644
+--- a/lib/fault-inject.c
++++ b/lib/fault-inject.c
+@@ -44,7 +44,7 @@ static void fail_dump(struct fault_attr *attr)
+ printk(KERN_NOTICE "FAULT_INJECTION: forcing a failure.\n"
+ "name %pd, interval %lu, probability %lu, "
+ "space %d, times %d\n", attr->dname,
+- attr->probability, attr->interval,
++ attr->interval, attr->probability,
+ atomic_read(&attr->space),
+ atomic_read(&attr->times));
+ if (attr->verbose > 1)
+diff --git a/mm/filemap.c b/mm/filemap.c
+index 6bf5e42d560a..1ffef05f1c1f 100644
+--- a/mm/filemap.c
++++ b/mm/filemap.c
+@@ -2461,6 +2461,11 @@ again:
+ break;
+ }
+
++ if (fatal_signal_pending(current)) {
++ status = -EINTR;
++ break;
++ }
++
+ status = a_ops->write_begin(file, mapping, pos, bytes, flags,
+ &page, &fsdata);
+ if (unlikely(status < 0))
+@@ -2498,10 +2503,6 @@ again:
+ written += copied;
+
+ balance_dirty_pages_ratelimited(mapping);
+- if (fatal_signal_pending(current)) {
+- status = -EINTR;
+- break;
+- }
+ } while (iov_iter_count(i));
+
+ return written ? written : status;
+diff --git a/mm/huge_memory.c b/mm/huge_memory.c
+index 078832cf3636..8e792ec5e84c 100644
+--- a/mm/huge_memory.c
++++ b/mm/huge_memory.c
+@@ -2137,7 +2137,8 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma,
+ for (_pte = pte; _pte < pte+HPAGE_PMD_NR;
+ _pte++, address += PAGE_SIZE) {
+ pte_t pteval = *_pte;
+- if (pte_none(pteval) || is_zero_pfn(pte_pfn(pteval))) {
++ if (pte_none(pteval) || (pte_present(pteval) &&
++ is_zero_pfn(pte_pfn(pteval)))) {
+ if (++none_or_zero <= khugepaged_max_ptes_none)
+ continue;
+ else
+diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
+index 36e8f1236637..57197bef5f5b 100644
+--- a/sound/pci/hda/hda_codec.c
++++ b/sound/pci/hda/hda_codec.c
+@@ -3833,10 +3833,8 @@ int snd_hda_codec_build_pcms(struct hda_codec *codec)
+ return -EINVAL;
+
+ err = snd_hda_codec_parse_pcms(codec);
+- if (err < 0) {
+- snd_hda_codec_reset(codec);
++ if (err < 0)
+ return err;
+- }
+
+ /* attach a new PCM streams */
+ list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
+diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
+index 06cc9d57ba3d..488f4c7be33e 100644
+--- a/sound/pci/hda/patch_conexant.c
++++ b/sound/pci/hda/patch_conexant.c
+@@ -819,6 +819,7 @@ static const struct snd_pci_quirk cxt5066_fixups[] = {
+ SND_PCI_QUIRK(0x17aa, 0x21da, "Lenovo X220", CXT_PINCFG_LENOVO_TP410),
+ SND_PCI_QUIRK(0x17aa, 0x21db, "Lenovo X220-tablet", CXT_PINCFG_LENOVO_TP410),
+ SND_PCI_QUIRK(0x17aa, 0x38af, "Lenovo IdeaPad Z560", CXT_FIXUP_MUTE_LED_EAPD),
++ SND_PCI_QUIRK(0x17aa, 0x390b, "Lenovo G50-80", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x3975, "Lenovo U300s", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x3977, "Lenovo IdeaPad U310", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x397b, "Lenovo S205", CXT_FIXUP_STEREO_DMIC),
+diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
+index 100d92b5b77e..05977ae1ff2a 100644
+--- a/sound/soc/soc-ops.c
++++ b/sound/soc/soc-ops.c
+@@ -207,6 +207,34 @@ int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
+ EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
+
+ /**
++ * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls
++ * @kcontrol: mixer control
++ * @uinfo: control element information
++ *
++ * Callback to provide information about a single mixer control, or a double
++ * mixer control that spans 2 registers of the SX TLV type. SX TLV controls
++ * have a range that represents both positive and negative values either side
++ * of zero but without a sign bit.
++ *
++ * Returns 0 for success.
++ */
++int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo)
++{
++ struct soc_mixer_control *mc =
++ (struct soc_mixer_control *)kcontrol->private_value;
++
++ snd_soc_info_volsw(kcontrol, uinfo);
++ /* Max represents the number of levels in an SX control not the
++ * maximum value, so add the minimum value back on
++ */
++ uinfo->value.integer.max += mc->min;
++
++ return 0;
++}
++EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx);
++
++/**
+ * snd_soc_get_volsw - single mixer get callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-11-05 23:29 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-11-05 23:29 UTC (permalink / raw
To: gentoo-commits
commit: 713b0f04dcd8afaa0d668b6f9a07572dc9d65102
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Nov 5 23:29:46 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Nov 5 23:29:46 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=713b0f04
update README
0000_README | 4 ----
1 file changed, 4 deletions(-)
diff --git a/0000_README b/0000_README
index 8ed7605..ff278e3 100644
--- a/0000_README
+++ b/0000_README
@@ -142,7 +142,3 @@ Desc: BFQ v7r8 patch 3 for 4.1: Early Queue Merge (EQM)
Patch: 5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
From: https://github.com/graysky2/kernel_gcc_patch/
Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs.
-
-Patch: 5015_kdbus-8-12-2015.patch
-From: https://lkml.org
-Desc: Kernel-level IPC implementation
^ permalink raw reply related [flat|nested] 71+ messages in thread
* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-11-05 23:29 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-11-05 23:29 UTC (permalink / raw
To: gentoo-commits
commit: a345c8eee693aff99ddd3ce3beb816cb355fc388
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Nov 5 23:29:08 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Nov 5 23:29:08 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=a345c8ee
Removing kdbus as per upstream developers. See http://lwn.net/Articles/663062/
5015_kdbus-8-12-2015.patch | 34349 -------------------------------------------
1 file changed, 34349 deletions(-)
diff --git a/5015_kdbus-8-12-2015.patch b/5015_kdbus-8-12-2015.patch
deleted file mode 100644
index 4e018f2..0000000
--- a/5015_kdbus-8-12-2015.patch
+++ /dev/null
@@ -1,34349 +0,0 @@
-diff --git a/Documentation/Makefile b/Documentation/Makefile
-index bc05482..e2127a7 100644
---- a/Documentation/Makefile
-+++ b/Documentation/Makefile
-@@ -1,4 +1,4 @@
- subdir-y := accounting auxdisplay blackfin connector \
-- filesystems filesystems ia64 laptops mic misc-devices \
-+ filesystems filesystems ia64 kdbus laptops mic misc-devices \
- networking pcmcia prctl ptp spi timers vDSO video4linux \
- watchdog
-diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt
-index 51f4221..ec7c81b 100644
---- a/Documentation/ioctl/ioctl-number.txt
-+++ b/Documentation/ioctl/ioctl-number.txt
-@@ -292,6 +292,7 @@ Code Seq#(hex) Include File Comments
- 0x92 00-0F drivers/usb/mon/mon_bin.c
- 0x93 60-7F linux/auto_fs.h
- 0x94 all fs/btrfs/ioctl.h
-+0x95 all uapi/linux/kdbus.h kdbus IPC driver
- 0x97 00-7F fs/ceph/ioctl.h Ceph file system
- 0x99 00-0F 537-Addinboard driver
- <mailto:buk@buks.ipn.de>
-diff --git a/Documentation/kdbus/.gitignore b/Documentation/kdbus/.gitignore
-new file mode 100644
-index 0000000..b4a77cc
---- /dev/null
-+++ b/Documentation/kdbus/.gitignore
-@@ -0,0 +1,2 @@
-+*.7
-+*.html
-diff --git a/Documentation/kdbus/Makefile b/Documentation/kdbus/Makefile
-new file mode 100644
-index 0000000..8caffe5
---- /dev/null
-+++ b/Documentation/kdbus/Makefile
-@@ -0,0 +1,44 @@
-+DOCS := \
-+ kdbus.xml \
-+ kdbus.bus.xml \
-+ kdbus.connection.xml \
-+ kdbus.endpoint.xml \
-+ kdbus.fs.xml \
-+ kdbus.item.xml \
-+ kdbus.match.xml \
-+ kdbus.message.xml \
-+ kdbus.name.xml \
-+ kdbus.policy.xml \
-+ kdbus.pool.xml
-+
-+XMLFILES := $(addprefix $(obj)/,$(DOCS))
-+MANFILES := $(patsubst %.xml, %.7, $(XMLFILES))
-+HTMLFILES := $(patsubst %.xml, %.html, $(XMLFILES))
-+
-+XMLTO_ARGS := -m $(srctree)/$(src)/stylesheet.xsl --skip-validation
-+
-+quiet_cmd_db2man = MAN $@
-+ cmd_db2man = xmlto man $(XMLTO_ARGS) -o $(obj) $<
-+%.7: %.xml
-+ @(which xmlto > /dev/null 2>&1) || \
-+ (echo "*** You need to install xmlto ***"; \
-+ exit 1)
-+ $(call cmd,db2man)
-+
-+quiet_cmd_db2html = HTML $@
-+ cmd_db2html = xmlto html-nochunks $(XMLTO_ARGS) -o $(obj) $<
-+%.html: %.xml
-+ @(which xmlto > /dev/null 2>&1) || \
-+ (echo "*** You need to install xmlto ***"; \
-+ exit 1)
-+ $(call cmd,db2html)
-+
-+mandocs: $(MANFILES)
-+
-+htmldocs: $(HTMLFILES)
-+
-+clean-files := $(MANFILES) $(HTMLFILES)
-+
-+# we don't support other %docs targets right now
-+%docs:
-+ @true
-diff --git a/Documentation/kdbus/kdbus.bus.xml b/Documentation/kdbus/kdbus.bus.xml
-new file mode 100644
-index 0000000..83f1198
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.bus.xml
-@@ -0,0 +1,344 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus.bus">
-+
-+ <refentryinfo>
-+ <title>kdbus.bus</title>
-+ <productname>kdbus.bus</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.bus</refname>
-+ <refpurpose>kdbus bus</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+
-+ <para>
-+ A bus is a resource that is shared between connections in order to
-+ transmit messages (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>).
-+ Each bus is independent, and operations on the bus will not have any
-+ effect on other buses. A bus is a management entity that controls the
-+ addresses of its connections, their policies and message transactions
-+ performed via this bus.
-+ </para>
-+ <para>
-+ Each bus is bound to the mount instance it was created on. It has a
-+ custom name that is unique across all buses of a domain. In
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ a bus is presented as a directory. No operations can be performed on
-+ the bus itself; instead you need to perform the operations on an endpoint
-+ associated with the bus. Endpoints are accessible as files underneath the
-+ bus directory. A default endpoint called <constant>bus</constant> is
-+ provided on each bus.
-+ </para>
-+ <para>
-+ Bus names may be chosen freely except for one restriction: the name must
-+ be prefixed with the numeric effective UID of the creator and a dash. This
-+ is required to avoid namespace clashes between different users. When
-+ creating a bus, the name that is passed in must be properly formatted, or
-+ the kernel will refuse creation of the bus. Example:
-+ <literal>1047-foobar</literal> is an acceptable name for a bus
-+ registered by a user with UID 1047. However,
-+ <literal>1024-foobar</literal> is not, and neither is
-+ <literal>foobar</literal>. The UID must be provided in the
-+ user-namespace of the bus owner.
-+ </para>
-+ <para>
-+ To create a new bus, you need to open the control file of a domain and
-+ employ the <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl. The control
-+ file descriptor that was used to issue
-+ <constant>KDBUS_CMD_BUS_MAKE</constant> must not previously have been
-+ used for any other control-ioctl and must be kept open for the entire
-+ life-time of the created bus. Closing it will immediately cleanup the
-+ entire bus and all its associated resources and endpoints. Every control
-+ file descriptor can only be used to create a single new bus; from that
-+ point on, it is not used for any further communication until the final
-+ <citerefentry>
-+ <refentrytitle>close</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ .
-+ </para>
-+ <para>
-+ Each bus will generate a random, 128-bit UUID upon creation. This UUID
-+ will be returned to creators of connections through
-+ <varname>kdbus_cmd_hello.id128</varname> and can be used to uniquely
-+ identify buses, even across different machines or containers. The UUID
-+ will have its variant bits set to <literal>DCE</literal>, and denote
-+ version 4 (random). For more details on UUIDs, see <ulink
-+ url="https://en.wikipedia.org/wiki/Universally_unique_identifier">
-+ the Wikipedia article on UUIDs</ulink>.
-+ </para>
-+
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Creating buses</title>
-+ <para>
-+ To create a new bus, the <constant>KDBUS_CMD_BUS_MAKE</constant>
-+ command is used. It takes a <type>struct kdbus_cmd</type> argument.
-+ </para>
-+ <programlisting>
-+struct kdbus_cmd {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>The flags for creation.</para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_MAKE_ACCESS_GROUP</constant></term>
-+ <listitem>
-+ <para>Make the bus file group-accessible.</para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_MAKE_ACCESS_WORLD</constant></term>
-+ <listitem>
-+ <para>Make the bus file world-accessible.</para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Requests a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will return
-+ <errorcode>0</errorcode>, and the <varname>flags</varname>
-+ field will have all bits set that are valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ The following items (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>)
-+ are expected for <constant>KDBUS_CMD_BUS_MAKE</constant>.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_MAKE_NAME</constant></term>
-+ <listitem>
-+ <para>
-+ Contains a null-terminated string that identifies the
-+ bus. The name must be unique across the kdbus domain and
-+ must start with the effective UID of the caller, followed by
-+ a '<literal>-</literal>' (dash). This item is mandatory.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_BLOOM_PARAMETER</constant></term>
-+ <listitem>
-+ <para>
-+ Bus-wide bloom parameters passed in a
-+ <type>struct kdbus_bloom_parameter</type>. These settings are
-+ copied back to new connections verbatim. This item is
-+ mandatory. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for a more detailed description of this item.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant></term>
-+ <listitem>
-+ <para>
-+ An optional item that contains a set of attach flags that are
-+ returned to connections when they query the bus creator
-+ metadata. If not set, no metadata is returned.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
-+ <listitem><para>
-+ With this item, programs can <emphasis>probe</emphasis> the
-+ kernel for known item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Return value</title>
-+ <para>
-+ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
-+ on error, <errorcode>-1</errorcode> is returned, and
-+ <varname>errno</varname> is set to indicate the error.
-+ If the issued ioctl is illegal for the file descriptor used,
-+ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
-+ </para>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_BUS_MAKE</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EBADMSG</constant></term>
-+ <listitem><para>
-+ A mandatory item is missing.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ The flags supplied in the <constant>struct kdbus_cmd</constant>
-+ are invalid or the supplied name does not start with the current
-+ UID and a '<literal>-</literal>' (dash).
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EEXIST</constant></term>
-+ <listitem><para>
-+ A bus of that name already exists.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ESHUTDOWN</constant></term>
-+ <listitem><para>
-+ The kdbus mount instance for the bus was already shut down.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EMFILE</constant></term>
-+ <listitem><para>
-+ The maximum number of buses for the current user is exhausted.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.connection.xml b/Documentation/kdbus/kdbus.connection.xml
-new file mode 100644
-index 0000000..4bb5f30
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.connection.xml
-@@ -0,0 +1,1244 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus.connection">
-+
-+ <refentryinfo>
-+ <title>kdbus.connection</title>
-+ <productname>kdbus.connection</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.connection</refname>
-+ <refpurpose>kdbus connection</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+
-+ <para>
-+ Connections are identified by their <emphasis>connection ID</emphasis>,
-+ internally implemented as a <type>uint64_t</type> counter.
-+ The IDs of every newly created bus start at <constant>1</constant>, and
-+ every new connection will increment the counter by <constant>1</constant>.
-+ The IDs are not reused.
-+ </para>
-+ <para>
-+ In higher level tools, the user visible representation of a connection is
-+ defined by the D-Bus protocol specification as
-+ <constant>":1.<ID>"</constant>.
-+ </para>
-+ <para>
-+ Messages with a specific <type>uint64_t</type> destination ID are
-+ directly delivered to the connection with the corresponding ID. Signal
-+ messages (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>)
-+ may be addressed to the special destination ID
-+ <constant>KDBUS_DST_ID_BROADCAST</constant> (~0ULL) and will then
-+ potentially be delivered to all currently active connections on the bus.
-+ However, in order to receive any signal messages, clients must subscribe
-+ to them by installing a match (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>).
-+ </para>
-+ <para>
-+ Messages synthesized and sent directly by the kernel will carry the
-+ special source ID <constant>KDBUS_SRC_ID_KERNEL</constant> (0).
-+ </para>
-+ <para>
-+ In addition to the unique <type>uint64_t</type> connection ID,
-+ established connections can request the ownership of
-+ <emphasis>well-known names</emphasis>, under which they can be found and
-+ addressed by other bus clients. A well-known name is associated with one
-+ and only one connection at a time. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ on name acquisition, the name registry, and the validity of names.
-+ </para>
-+ <para>
-+ Messages can specify the special destination ID
-+ <constant>KDBUS_DST_ID_NAME</constant> (0) and carry a well-known name
-+ in the message data. Such a message is delivered to the destination
-+ connection which owns that well-known name.
-+ </para>
-+
-+ <programlisting><![CDATA[
-+ +-------------------------------------------------------------------------+
-+ | +---------------+ +---------------------------+ |
-+ | | Connection | | Message | -----------------+ |
-+ | | :1.22 | --> | src: 22 | | |
-+ | | | | dst: 25 | | |
-+ | | | | | | |
-+ | | | | | | |
-+ | | | +---------------------------+ | |
-+ | | | | |
-+ | | | <--------------------------------------+ | |
-+ | +---------------+ | | |
-+ | | | |
-+ | +---------------+ +---------------------------+ | | |
-+ | | Connection | | Message | -----+ | |
-+ | | :1.25 | --> | src: 25 | | |
-+ | | | | dst: 0xffffffffffffffff | -------------+ | |
-+ | | | | (KDBUS_DST_ID_BROADCAST) | | | |
-+ | | | | | ---------+ | | |
-+ | | | +---------------------------+ | | | |
-+ | | | | | | |
-+ | | | <--------------------------------------------------+ |
-+ | +---------------+ | | |
-+ | | | |
-+ | +---------------+ +---------------------------+ | | |
-+ | | Connection | | Message | --+ | | |
-+ | | :1.55 | --> | src: 55 | | | | |
-+ | | | | dst: 0 / org.foo.bar | | | | |
-+ | | | | | | | | |
-+ | | | | | | | | |
-+ | | | +---------------------------+ | | | |
-+ | | | | | | |
-+ | | | <------------------------------------------+ | |
-+ | +---------------+ | | |
-+ | | | |
-+ | +---------------+ | | |
-+ | | Connection | | | |
-+ | | :1.81 | | | |
-+ | | org.foo.bar | | | |
-+ | | | | | |
-+ | | | | | |
-+ | | | <-----------------------------------+ | |
-+ | | | | |
-+ | | | <----------------------------------------------+ |
-+ | +---------------+ |
-+ +-------------------------------------------------------------------------+
-+ ]]></programlisting>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Privileged connections</title>
-+ <para>
-+ A connection is considered <emphasis>privileged</emphasis> if the user
-+ it was created by is the same that created the bus, or if the creating
-+ task had <constant>CAP_IPC_OWNER</constant> set when it called
-+ <constant>KDBUS_CMD_HELLO</constant> (see below).
-+ </para>
-+ <para>
-+ Privileged connections have permission to employ certain restricted
-+ functions and commands, which are explained below and in other kdbus
-+ man-pages.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Activator and policy holder connection</title>
-+ <para>
-+ An <emphasis>activator</emphasis> connection is a placeholder for a
-+ <emphasis>well-known name</emphasis>. Messages sent to such a connection
-+ can be used to start an implementer connection, which will then get all
-+ the messages from the activator copied over. An activator connection
-+ cannot be used to send any message.
-+ </para>
-+ <para>
-+ A <emphasis>policy holder</emphasis> connection only installs a policy
-+ for one or more names. These policy entries are kept active as long as
-+ the connection is alive, and are removed once it terminates. Such a
-+ policy connection type can be used to deploy restrictions for names that
-+ are not yet active on the bus. A policy holder connection cannot be used
-+ to send any message.
-+ </para>
-+ <para>
-+ The creation of activator or policy holder connections is restricted to
-+ privileged users on the bus (see above).
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Monitor connections</title>
-+ <para>
-+ Monitors are eavesdropping connections that receive all the traffic on the
-+ bus, but is invisible to other connections. Such connections have all
-+ properties of any other, regular connection, except for the following
-+ details:
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem><para>
-+ They will get every message sent over the bus, both unicasts and
-+ broadcasts.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ Installing matches for signal messages is neither necessary
-+ nor allowed.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ They cannot send messages or be directly addressed as receiver.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ They cannot own well-known names. Therefore, they also can't operate as
-+ activators.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ Their creation and destruction will not cause
-+ <constant>KDBUS_ITEM_ID_{ADD,REMOVE}</constant> (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>).
-+ </para></listitem>
-+
-+ <listitem><para>
-+ They are not listed with their unique name in name registry dumps
-+ (see <constant>KDBUS_CMD_NAME_LIST</constant> in
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>), so other connections cannot detect the presence of
-+ a monitor.
-+ </para></listitem>
-+ </itemizedlist>
-+ <para>
-+ The creation of monitor connections is restricted to privileged users on
-+ the bus (see above).
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Creating connections</title>
-+ <para>
-+ A connection to a bus is created by opening an endpoint file (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>)
-+ of a bus and becoming an active client with the
-+ <constant>KDBUS_CMD_HELLO</constant> ioctl. Every connection has a unique
-+ identifier on the bus and can address messages to every other connection
-+ on the same bus by using the peer's connection ID as the destination.
-+ </para>
-+ <para>
-+ The <constant>KDBUS_CMD_HELLO</constant> ioctl takes a <type>struct
-+ kdbus_cmd_hello</type> as argument.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd_hello {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 attach_flags_send;
-+ __u64 attach_flags_recv;
-+ __u64 bus_flags;
-+ __u64 id;
-+ __u64 pool_size;
-+ __u64 offset;
-+ __u8 id128[16];
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem>
-+ <para>Flags to apply to this connection</para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_HELLO_ACCEPT_FD</constant></term>
-+ <listitem>
-+ <para>
-+ When this flag is set, the connection can be sent file
-+ descriptors as message payload of unicast messages. If it's
-+ not set, an attempt to send file descriptors will result in
-+ <constant>-ECOMM</constant> on the sender's side.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_HELLO_ACTIVATOR</constant></term>
-+ <listitem>
-+ <para>
-+ Make this connection an activator (see above). With this bit
-+ set, an item of type <constant>KDBUS_ITEM_NAME</constant> has
-+ to be attached. This item describes the well-known name this
-+ connection should be an activator for.
-+ A connection can not be an activator and a policy holder at
-+ the same time time, so this bit is not allowed together with
-+ <constant>KDBUS_HELLO_POLICY_HOLDER</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_HELLO_POLICY_HOLDER</constant></term>
-+ <listitem>
-+ <para>
-+ Make this connection a policy holder (see above). With this
-+ bit set, an item of type <constant>KDBUS_ITEM_NAME</constant>
-+ has to be attached. This item describes the well-known name
-+ this connection should hold a policy for.
-+ A connection can not be an activator and a policy holder at
-+ the same time time, so this bit is not allowed together with
-+ <constant>KDBUS_HELLO_ACTIVATOR</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_HELLO_MONITOR</constant></term>
-+ <listitem>
-+ <para>
-+ Make this connection a monitor connection (see above).
-+ </para>
-+ <para>
-+ This flag can only be set by privileged bus connections. See
-+ below for more information.
-+ A connection can not be monitor and an activator or a policy
-+ holder at the same time time, so this bit is not allowed
-+ together with <constant>KDBUS_HELLO_ACTIVATOR</constant> or
-+ <constant>KDBUS_HELLO_POLICY_HOLDER</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Requests a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will return
-+ <errorcode>0</errorcode>, and the <varname>flags</varname>
-+ field will have all bits set that are valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>attach_flags_send</varname></term>
-+ <listitem><para>
-+ Set the bits for metadata this connection permits to be sent to the
-+ receiving peer. Only metadata items that are both allowed to be sent
-+ by the sender and that are requested by the receiver will be attached
-+ to the message.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>attach_flags_recv</varname></term>
-+ <listitem><para>
-+ Request the attachment of metadata for each message received by this
-+ connection. See
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for information about metadata, and
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ regarding items in general.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>bus_flags</varname></term>
-+ <listitem><para>
-+ Upon successful completion of the ioctl, this member will contain the
-+ flags of the bus it connected to.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>id</varname></term>
-+ <listitem><para>
-+ Upon successful completion of the command, this member will contain
-+ the numerical ID of the new connection.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>pool_size</varname></term>
-+ <listitem><para>
-+ The size of the communication pool, in bytes. The pool can be
-+ accessed by calling
-+ <citerefentry>
-+ <refentrytitle>mmap</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ on the file descriptor that was used to issue the
-+ <constant>KDBUS_CMD_HELLO</constant> ioctl.
-+ The pool size of a connection must be greater than
-+ <constant>0</constant> and a multiple of
-+ <constant>PAGE_SIZE</constant>. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>offset</varname></term>
-+ <listitem><para>
-+ The kernel will return the offset in the pool where returned details
-+ will be stored. See below.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>id128</varname></term>
-+ <listitem><para>
-+ Upon successful completion of the ioctl, this member will contain the
-+ <emphasis>128-bit UUID</emphasis> of the connected bus.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ Variable list of items containing optional additional information.
-+ The following items are currently expected/valid:
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CONN_DESCRIPTION</constant></term>
-+ <listitem>
-+ <para>
-+ Contains a string that describes this connection, so it can
-+ be identified later.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NAME</constant></term>
-+ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
-+ <listitem>
-+ <para>
-+ For activators and policy holders only, combinations of
-+ these two items describe policy access entries. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further details.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CREDS</constant></term>
-+ <term><constant>KDBUS_ITEM_PIDS</constant></term>
-+ <term><constant>KDBUS_ITEM_SECLABEL</constant></term>
-+ <listitem>
-+ <para>
-+ Privileged bus users may submit these types in order to
-+ create connections with faked credentials. This information
-+ will be returned when peer information is queried by
-+ <constant>KDBUS_CMD_CONN_INFO</constant>. See below for more
-+ information on retrieving information on connections.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
-+ <listitem><para>
-+ With this item, programs can <emphasis>probe</emphasis> the
-+ kernel for known item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ At the offset returned in the <varname>offset</varname> field of
-+ <type>struct kdbus_cmd_hello</type>, the kernel will store items
-+ of the following types:
-+ </para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_BLOOM_PARAMETER</constant></term>
-+ <listitem>
-+ <para>
-+ Bloom filter parameter as defined by the bus creator.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ The offset in the pool has to be freed with the
-+ <constant>KDBUS_CMD_FREE</constant> ioctl. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further information.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Retrieving information on a connection</title>
-+ <para>
-+ The <constant>KDBUS_CMD_CONN_INFO</constant> ioctl can be used to
-+ retrieve credentials and properties of the initial creator of a
-+ connection. This ioctl uses the following struct.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd_info {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 id;
-+ __u64 attach_flags;
-+ __u64 offset;
-+ __u64 info_size;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ Currently, no flags are supported.
-+ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
-+ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
-+ and the <varname>flags</varname> field is set to
-+ <constant>0</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>id</varname></term>
-+ <listitem><para>
-+ The numerical ID of the connection for which information is to be
-+ retrieved. If set to a non-zero value, the
-+ <constant>KDBUS_ITEM_OWNED_NAME</constant> item is ignored.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>attach_flags</varname></term>
-+ <listitem><para>
-+ Specifies which metadata items should be attached to the answer. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>offset</varname></term>
-+ <listitem><para>
-+ When the ioctl returns, this field will contain the offset of the
-+ connection information inside the caller's pool. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further information.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>info_size</varname></term>
-+ <listitem><para>
-+ The kernel will return the size of the returned information, so
-+ applications can optionally
-+ <citerefentry>
-+ <refentrytitle>mmap</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ specific parts of the pool. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further information.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ The following items are expected for
-+ <constant>KDBUS_CMD_CONN_INFO</constant>.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_OWNED_NAME</constant></term>
-+ <listitem>
-+ <para>
-+ Contains the well-known name of the connection to look up as.
-+ This item is mandatory if the <varname>id</varname> field is
-+ set to 0.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
-+ <listitem><para>
-+ With this item, programs can <emphasis>probe</emphasis> the
-+ kernel for known item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ When the ioctl returns, the following struct will be stored in the
-+ caller's pool at <varname>offset</varname>. The fields in this struct
-+ are described below.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_info {
-+ __u64 size;
-+ __u64 id;
-+ __u64 flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>id</varname></term>
-+ <listitem><para>
-+ The connection's unique ID.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ The connection's flags as specified when it was created.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ Depending on the <varname>flags</varname> field in
-+ <type>struct kdbus_cmd_info</type>, items of types
-+ <constant>KDBUS_ITEM_OWNED_NAME</constant> and
-+ <constant>KDBUS_ITEM_CONN_DESCRIPTION</constant> may follow here.
-+ <constant>KDBUS_ITEM_NEGOTIATE</constant> is also allowed.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Once the caller is finished with parsing the return buffer, it needs to
-+ employ the <constant>KDBUS_CMD_FREE</constant> command for the offset, in
-+ order to free the buffer part. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further information.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Getting information about a connection's bus creator</title>
-+ <para>
-+ The <constant>KDBUS_CMD_BUS_CREATOR_INFO</constant> ioctl takes the same
-+ struct as <constant>KDBUS_CMD_CONN_INFO</constant>, but is used to
-+ retrieve information about the creator of the bus the connection is
-+ attached to. The metadata returned by this call is collected during the
-+ creation of the bus and is never altered afterwards, so it provides
-+ pristine information on the task that created the bus, at the moment when
-+ it did so.
-+ </para>
-+ <para>
-+ In response to this call, a slice in the connection's pool is allocated
-+ and filled with an object of type <type>struct kdbus_info</type>,
-+ pointed to by the ioctl's <varname>offset</varname> field.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_info {
-+ __u64 size;
-+ __u64 id;
-+ __u64 flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>id</varname></term>
-+ <listitem><para>
-+ The bus ID.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ The bus flags as specified when it was created.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ Metadata information is stored in items here. The item list
-+ contains a <constant>KDBUS_ITEM_MAKE_NAME</constant> item that
-+ indicates the bus name of the calling connection.
-+ <constant>KDBUS_ITEM_NEGOTIATE</constant> is allowed to probe
-+ for known item types.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Once the caller is finished with parsing the return buffer, it needs to
-+ employ the <constant>KDBUS_CMD_FREE</constant> command for the offset, in
-+ order to free the buffer part. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further information.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Updating connection details</title>
-+ <para>
-+ Some of a connection's details can be updated with the
-+ <constant>KDBUS_CMD_CONN_UPDATE</constant> ioctl, using the file
-+ descriptor that was used to create the connection. The update command
-+ uses the following struct.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ Currently, no flags are supported.
-+ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
-+ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
-+ and the <varname>flags</varname> field is set to
-+ <constant>0</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ Items to describe the connection details to be updated. The
-+ following item types are supported.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant></term>
-+ <listitem>
-+ <para>
-+ Supply a new set of metadata items that this connection
-+ permits to be sent along with messages.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_RECV</constant></term>
-+ <listitem>
-+ <para>
-+ Supply a new set of metadata items that this connection
-+ requests to be attached to each message.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NAME</constant></term>
-+ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
-+ <listitem>
-+ <para>
-+ Policy holder connections may supply a new set of policy
-+ information with these items. For other connection types,
-+ <constant>EOPNOTSUPP</constant> is returned in
-+ <varname>errno</varname>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
-+ <listitem><para>
-+ With this item, programs can <emphasis>probe</emphasis> the
-+ kernel for known item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Termination of connections</title>
-+ <para>
-+ A connection can be terminated by simply calling
-+ <citerefentry>
-+ <refentrytitle>close</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ on its file descriptor. All pending incoming messages will be discarded,
-+ and the memory allocated by the pool will be freed.
-+ </para>
-+
-+ <para>
-+ An alternative way of closing down a connection is via the
-+ <constant>KDBUS_CMD_BYEBYE</constant> ioctl. This ioctl will succeed only
-+ if the message queue of the connection is empty at the time of closing;
-+ otherwise, the ioctl will fail with <varname>errno</varname> set to
-+ <constant>EBUSY</constant>. When this ioctl returns
-+ successfully, the connection has been terminated and won't accept any new
-+ messages from remote peers. This way, a connection can be terminated
-+ race-free, without losing any messages. The ioctl takes an argument of
-+ type <type>struct kdbus_cmd</type>.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ Currently, no flags are supported.
-+ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
-+ valid flags. If set, the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EPROTO</constant>, and
-+ the <varname>flags</varname> field is set to <constant>0</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ The following item types are supported.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
-+ <listitem><para>
-+ With this item, programs can <emphasis>probe</emphasis> the
-+ kernel for known item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Return value</title>
-+ <para>
-+ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
-+ on error, <errorcode>-1</errorcode> is returned, and
-+ <varname>errno</varname> is set to indicate the error.
-+ If the issued ioctl is illegal for the file descriptor used,
-+ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
-+ </para>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_HELLO</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EFAULT</constant></term>
-+ <listitem><para>
-+ The supplied pool size was 0 or not a multiple of the page size.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ The flags supplied in <type>struct kdbus_cmd_hello</type>
-+ are invalid.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ An illegal combination of
-+ <constant>KDBUS_HELLO_MONITOR</constant>,
-+ <constant>KDBUS_HELLO_ACTIVATOR</constant> and
-+ <constant>KDBUS_HELLO_POLICY_HOLDER</constant> was passed in
-+ <varname>flags</varname>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ An invalid set of items was supplied.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ECONNREFUSED</constant></term>
-+ <listitem><para>
-+ The attach_flags_send field did not satisfy the requirements of
-+ the bus.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EPERM</constant></term>
-+ <listitem><para>
-+ A <constant>KDBUS_ITEM_CREDS</constant> items was supplied, but the
-+ current user is not privileged.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ESHUTDOWN</constant></term>
-+ <listitem><para>
-+ The bus you were trying to connect to has already been shut down.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EMFILE</constant></term>
-+ <listitem><para>
-+ The maximum number of connections on the bus has been reached.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EOPNOTSUPP</constant></term>
-+ <listitem><para>
-+ The endpoint does not support the connection flags supplied in
-+ <type>struct kdbus_cmd_hello</type>.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_BYEBYE</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EALREADY</constant></term>
-+ <listitem><para>
-+ The connection has already been shut down.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EBUSY</constant></term>
-+ <listitem><para>
-+ There are still messages queued up in the connection's pool.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_CONN_INFO</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Invalid flags, or neither an ID nor a name was provided, or the
-+ name is invalid.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ESRCH</constant></term>
-+ <listitem><para>
-+ Connection lookup by name failed.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ENXIO</constant></term>
-+ <listitem><para>
-+ No connection with the provided connection ID found.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_CONN_UPDATE</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Illegal flags or items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Wildcards submitted in policy entries, or illegal sequence
-+ of policy items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EOPNOTSUPP</constant></term>
-+ <listitem><para>
-+ Operation not supported by connection.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>E2BIG</constant></term>
-+ <listitem><para>
-+ Too many policy items attached.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.endpoint.xml b/Documentation/kdbus/kdbus.endpoint.xml
-new file mode 100644
-index 0000000..6632485
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.endpoint.xml
-@@ -0,0 +1,429 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus.endpoint">
-+
-+ <refentryinfo>
-+ <title>kdbus.endpoint</title>
-+ <productname>kdbus.endpoint</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.endpoint</refname>
-+ <refpurpose>kdbus endpoint</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+
-+ <para>
-+ Endpoints are entry points to a bus (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>).
-+ By default, each bus has a default
-+ endpoint called 'bus'. The bus owner has the ability to create custom
-+ endpoints with specific names, permissions, and policy databases
-+ (see below). An endpoint is presented as file underneath the directory
-+ of the parent bus.
-+ </para>
-+ <para>
-+ To create a custom endpoint, open the default endpoint
-+ (<literal>bus</literal>) and use the
-+ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> ioctl with
-+ <type>struct kdbus_cmd</type>. Custom endpoints always have a policy
-+ database that, by default, forbids any operation. You have to explicitly
-+ install policy entries to allow any operation on this endpoint.
-+ </para>
-+ <para>
-+ Once <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> succeeded, the new
-+ endpoint will appear in the filesystem
-+ (<citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>), and the used file descriptor will manage the
-+ newly created endpoint resource. It cannot be used to manage further
-+ resources and must be kept open as long as the endpoint is needed. The
-+ endpoint will be terminated as soon as the file descriptor is closed.
-+ </para>
-+ <para>
-+ Endpoint names may be chosen freely except for one restriction: the name
-+ must be prefixed with the numeric effective UID of the creator and a dash.
-+ This is required to avoid namespace clashes between different users. When
-+ creating an endpoint, the name that is passed in must be properly
-+ formatted or the kernel will refuse creation of the endpoint. Example:
-+ <literal>1047-my-endpoint</literal> is an acceptable name for an
-+ endpoint registered by a user with UID 1047. However,
-+ <literal>1024-my-endpoint</literal> is not, and neither is
-+ <literal>my-endpoint</literal>. The UID must be provided in the
-+ user-namespace of the bus.
-+ </para>
-+ <para>
-+ To create connections to a bus, use <constant>KDBUS_CMD_HELLO</constant>
-+ on a file descriptor returned by <function>open()</function> on an
-+ endpoint node. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further details.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Creating custom endpoints</title>
-+ <para>
-+ To create a new endpoint, the
-+ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> command is used. Along with
-+ the endpoint's name, which will be used to expose the endpoint in the
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>,
-+ the command also optionally takes items to set up the endpoint's
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> takes a
-+ <type>struct kdbus_cmd</type> argument.
-+ </para>
-+ <programlisting>
-+struct kdbus_cmd {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>The flags for creation.</para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_MAKE_ACCESS_GROUP</constant></term>
-+ <listitem>
-+ <para>Make the endpoint file group-accessible.</para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_MAKE_ACCESS_WORLD</constant></term>
-+ <listitem>
-+ <para>Make the endpoint file world-accessible.</para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Requests a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will return
-+ <errorcode>0</errorcode>, and the <varname>flags</varname>
-+ field will have all bits set that are valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ The following items are expected for
-+ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_MAKE_NAME</constant></term>
-+ <listitem>
-+ <para>Contains a string to identify the endpoint name.</para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NAME</constant></term>
-+ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
-+ <listitem>
-+ <para>
-+ These items are used to set the policy attached to the
-+ endpoint. For more details on bus and endpoint policies, see
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <varname>EINVAL</varname>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Updating endpoints</title>
-+ <para>
-+ To update an existing endpoint, the
-+ <constant>KDBUS_CMD_ENDPOINT_UPDATE</constant> command is used on the file
-+ descriptor that was used to create the endpoint, using
-+ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>. The only relevant detail of
-+ the endpoint that can be updated is the policy. When the command is
-+ employed, the policy of the endpoint is <emphasis>replaced</emphasis>
-+ atomically with the new set of rules.
-+ The command takes a <type>struct kdbus_cmd</type> argument.
-+ </para>
-+ <programlisting>
-+struct kdbus_cmd {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ Unused for this command.
-+ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
-+ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
-+ and the <varname>flags</varname> field is set to
-+ <constant>0</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ The following items are expected for
-+ <constant>KDBUS_CMD_ENDPOINT_UPDATE</constant>.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NAME</constant></term>
-+ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
-+ <listitem>
-+ <para>
-+ These items are used to set the policy attached to the
-+ endpoint. For more details on bus and endpoint policies, see
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ Existing policy is atomically replaced with the new rules
-+ provided.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
-+ <listitem><para>
-+ With this item, programs can <emphasis>probe</emphasis> the
-+ kernel for known item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Return value</title>
-+ <para>
-+ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
-+ on error, <errorcode>-1</errorcode> is returned, and
-+ <varname>errno</varname> is set to indicate the error.
-+ If the issued ioctl is illegal for the file descriptor used,
-+ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
-+ </para>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> may fail with the
-+ following errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ The flags supplied in the <type>struct kdbus_cmd</type>
-+ are invalid.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Illegal combination of <constant>KDBUS_ITEM_NAME</constant> and
-+ <constant>KDBUS_ITEM_POLICY_ACCESS</constant> was provided.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EEXIST</constant></term>
-+ <listitem><para>
-+ An endpoint of that name already exists.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EPERM</constant></term>
-+ <listitem><para>
-+ The calling user is not privileged. See
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for information about privileged users.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_ENDPOINT_UPDATE</constant> may fail with the
-+ following errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ The flags supplied in <type>struct kdbus_cmd</type>
-+ are invalid.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Illegal combination of <constant>KDBUS_ITEM_NAME</constant> and
-+ <constant>KDBUS_ITEM_POLICY_ACCESS</constant> was provided.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.fs.xml b/Documentation/kdbus/kdbus.fs.xml
-new file mode 100644
-index 0000000..8c2a90e
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.fs.xml
-@@ -0,0 +1,124 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus_fs">
-+
-+ <refentryinfo>
-+ <title>kdbus.fs</title>
-+ <productname>kdbus.fs</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.fs</refname>
-+ <refpurpose>kdbus file system</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>File-system Layout</title>
-+
-+ <para>
-+ The <emphasis>kdbusfs</emphasis> pseudo filesystem provides access to
-+ kdbus entities, such as <emphasis>buses</emphasis> and
-+ <emphasis>endpoints</emphasis>. Each time the filesystem is mounted,
-+ a new, isolated kdbus instance is created, which is independent from the
-+ other instances.
-+ </para>
-+ <para>
-+ The system-wide standard mount point for <emphasis>kdbusfs</emphasis> is
-+ <constant>/sys/fs/kdbus</constant>.
-+ </para>
-+
-+ <para>
-+ Buses are represented as directories in the file system layout, whereas
-+ endpoints are exposed as files inside these directories. At the top-level,
-+ a <emphasis>control</emphasis> node is present, which can be opened to
-+ create new buses via the <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl.
-+ Each <emphasis>bus</emphasis> shows a default endpoint called
-+ <varname>bus</varname>, which can be opened to either create a connection
-+ with the <constant>KDBUS_CMD_HELLO</constant> ioctl, or to create new
-+ custom endpoints for the bus with
-+ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>,
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry> and
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+
-+ <para>Following, you can see an example layout of the
-+ <emphasis>kdbusfs</emphasis> filesystem:</para>
-+
-+<programlisting>
-+ /sys/fs/kdbus/ ; mount-point
-+ |-- 0-system ; bus directory
-+ | |-- bus ; default endpoint
-+ | `-- 1017-custom ; custom endpoint
-+ |-- 1000-user ; bus directory
-+ | |-- bus ; default endpoint
-+ | |-- 1000-service-A ; custom endpoint
-+ | `-- 1000-service-B ; custom endpoint
-+ `-- control ; control file
-+</programlisting>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Mounting instances</title>
-+ <para>
-+ In order to get a new and separate kdbus environment, a new instance
-+ of <emphasis>kdbusfs</emphasis> can be mounted like this:
-+ </para>
-+<programlisting>
-+ # mount -t kdbusfs kdbusfs /tmp/new_kdbus/
-+</programlisting>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>mount</refentrytitle>
-+ <manvolnum>8</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.item.xml b/Documentation/kdbus/kdbus.item.xml
-new file mode 100644
-index 0000000..ee09dfa
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.item.xml
-@@ -0,0 +1,839 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus">
-+
-+ <refentryinfo>
-+ <title>kdbus.item</title>
-+ <productname>kdbus item</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.item</refname>
-+ <refpurpose>kdbus item structure, layout and usage</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+
-+ <para>
-+ To flexibly augment transport structures, data blobs of type
-+ <type>struct kdbus_item</type> can be attached to the structs passed
-+ into the ioctls. Some ioctls make items of certain types mandatory,
-+ others are optional. Items that are unsupported by ioctls they are
-+ attached to will cause the ioctl to fail with <varname>errno</varname>
-+ set to <constant>EINVAL</constant>.
-+ Items are also used for information stored in a connection's
-+ <emphasis>pool</emphasis>, such as received messages, name lists or
-+ requested connection or bus owner information. Depending on the type of
-+ an item, its total size is either fixed or variable.
-+ </para>
-+
-+ <refsect2>
-+ <title>Chaining items</title>
-+ <para>
-+ Whenever items are used as part of the kdbus kernel API, they are
-+ embedded in structs that are embedded inside structs that themselves
-+ include a size field containing the overall size of the structure.
-+ This allows multiple items to be chained up, and an item iterator
-+ (see below) is capable of detecting the end of an item chain.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Alignment</title>
-+ <para>
-+ The kernel expects all items to be aligned to 8-byte boundaries.
-+ Unaligned items will cause the ioctl they are used with to fail
-+ with <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ An item that has an unaligned size itself hence needs to be padded
-+ if it is followed by another item.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Iterating items</title>
-+ <para>
-+ A simple iterator would iterate over the items until the items have
-+ reached the embedding structure's overall size. An example
-+ implementation is shown below.
-+ </para>
-+
-+ <programlisting><![CDATA[
-+#define KDBUS_ALIGN8(val) (((val) + 7) & ~7)
-+
-+#define KDBUS_ITEM_NEXT(item) \
-+ (typeof(item))((uint8_t *)(item) + KDBUS_ALIGN8((item)->size))
-+
-+#define KDBUS_ITEM_FOREACH(item, head, first) \
-+ for ((item) = (head)->first; \
-+ ((uint8_t *)(item) < (uint8_t *)(head) + (head)->size) && \
-+ ((uint8_t *)(item) >= (uint8_t *)(head)); \
-+ (item) = KDBUS_ITEM_NEXT(item))
-+ ]]></programlisting>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Item layout</title>
-+ <para>
-+ A <type>struct kdbus_item</type> consists of a
-+ <varname>size</varname> field, describing its overall size, and a
-+ <varname>type</varname> field, both 64 bit wide. They are followed by
-+ a union to store information that is specific to the item's type.
-+ The struct layout is shown below.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_item {
-+ __u64 size;
-+ __u64 type;
-+ /* item payload - see below */
-+ union {
-+ __u8 data[0];
-+ __u32 data32[0];
-+ __u64 data64[0];
-+ char str[0];
-+
-+ __u64 id;
-+ struct kdbus_vec vec;
-+ struct kdbus_creds creds;
-+ struct kdbus_pids pids;
-+ struct kdbus_audit audit;
-+ struct kdbus_caps caps;
-+ struct kdbus_timestamp timestamp;
-+ struct kdbus_name name;
-+ struct kdbus_bloom_parameter bloom_parameter;
-+ struct kdbus_bloom_filter bloom_filter;
-+ struct kdbus_memfd memfd;
-+ int fds[0];
-+ struct kdbus_notify_name_change name_change;
-+ struct kdbus_notify_id_change id_change;
-+ struct kdbus_policy_access policy_access;
-+ };
-+};
-+ </programlisting>
-+
-+ <para>
-+ <type>struct kdbus_item</type> should never be used to allocate
-+ an item instance, as its size may grow in future releases of the API.
-+ Instead, it should be manually assembled by storing the
-+ <varname>size</varname>, <varname>type</varname> and payload to a
-+ struct of its own.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Item types</title>
-+
-+ <refsect2>
-+ <title>Negotiation item</title>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
-+ <listitem><para>
-+ With this item is attached to any ioctl, programs can
-+ <emphasis>probe</emphasis> the kernel for known item types.
-+ The item carries an array of <type>uint64_t</type> values in
-+ <varname>item.data64</varname>, each set to an item type to
-+ probe. The kernel will reset each member of this array that is
-+ not recognized as valid item type to <constant>0</constant>.
-+ This way, users can negotiate kernel features at start-up to
-+ keep newer userspace compatible with older kernels. This item
-+ is never attached by the kernel in response to any command.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Command specific items</title>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_PAYLOAD_VEC</constant></term>
-+ <term><constant>KDBUS_ITEM_PAYLOAD_OFF</constant></term>
-+ <listitem><para>
-+ Messages are directly copied by the sending process into the
-+ receiver's
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ This way, two peers can exchange data by effectively doing a
-+ single-copy from one process to another; the kernel will not buffer
-+ the data anywhere else. <constant>KDBUS_ITEM_PAYLOAD_VEC</constant>
-+ is used when <emphasis>sending</emphasis> message. The item
-+ references a memory address when the payload data can be found.
-+ <constant>KDBUS_ITEM_PAYLOAD_OFF</constant> is used when messages
-+ are <emphasis>received</emphasis>, and the
-+ <constant>offset</constant> value describes the offset inside the
-+ receiving connection's
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ where the message payload can be found. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on passing of payload data along with a
-+ message.
-+ <programlisting>
-+struct kdbus_vec {
-+ __u64 size;
-+ union {
-+ __u64 address;
-+ __u64 offset;
-+ };
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant></term>
-+ <listitem><para>
-+ Transports a file descriptor of a <emphasis>memfd</emphasis> in
-+ <type>struct kdbus_memfd</type> in <varname>item.memfd</varname>.
-+ The <varname>size</varname> field has to match the actual size of
-+ the memfd that was specified when it was created. The
-+ <varname>start</varname> parameter denotes the offset inside the
-+ memfd at which the referenced payload starts. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on passing of payload data along with a
-+ message.
-+ <programlisting>
-+struct kdbus_memfd {
-+ __u64 start;
-+ __u64 size;
-+ int fd;
-+ __u32 __pad;
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_FDS</constant></term>
-+ <listitem><para>
-+ Contains an array of <emphasis>file descriptors</emphasis>.
-+ When used with <constant>KDBUS_CMD_SEND</constant>, the values of
-+ this array must be filled with valid file descriptor numbers.
-+ When received as item attached to a message, the array will
-+ contain the numbers of the installed file descriptors, or
-+ <constant>-1</constant> in case an error occurred.
-+ In either case, the number of entries in the array is derived from
-+ the item's total size. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Items specific to some commands</title>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CANCEL_FD</constant></term>
-+ <listitem><para>
-+ Transports a file descriptor that can be used to cancel a
-+ synchronous <constant>KDBUS_CMD_SEND</constant> operation by
-+ writing to it. The file descriptor is stored in
-+ <varname>item.fd[0]</varname>. The item may only contain one
-+ file descriptor. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on this item and how to use it.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_BLOOM_PARAMETER</constant></term>
-+ <listitem><para>
-+ Contains a set of <emphasis>bloom parameters</emphasis> as
-+ <type>struct kdbus_bloom_parameter</type> in
-+ <varname>item.bloom_parameter</varname>.
-+ The item is passed from userspace to kernel during the
-+ <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl, and returned
-+ verbatim when <constant>KDBUS_CMD_HELLO</constant> is called.
-+ The kernel does not use the bloom parameters, but they need to
-+ be known by each connection on the bus in order to define the
-+ bloom filter hash details. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on matching and bloom filters.
-+ <programlisting>
-+struct kdbus_bloom_parameter {
-+ __u64 size;
-+ __u64 n_hash;
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_BLOOM_FILTER</constant></term>
-+ <listitem><para>
-+ Carries a <emphasis>bloom filter</emphasis> as
-+ <type>struct kdbus_bloom_filter</type> in
-+ <varname>item.bloom_filter</varname>. It is mandatory to send this
-+ item attached to a <type>struct kdbus_msg</type>, in case the
-+ message is a signal. This item is never transported from kernel to
-+ userspace. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on matching and bloom filters.
-+ <programlisting>
-+struct kdbus_bloom_filter {
-+ __u64 generation;
-+ __u64 data[0];
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_BLOOM_MASK</constant></term>
-+ <listitem><para>
-+ Transports a <emphasis>bloom mask</emphasis> as binary data blob
-+ stored in <varname>item.data</varname>. This item is used to
-+ describe a match into a connection's match database. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on matching and bloom filters.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_DST_NAME</constant></term>
-+ <listitem><para>
-+ Contains a <emphasis>well-known name</emphasis> to send a
-+ message to, as null-terminated string in
-+ <varname>item.str</varname>. This item is used with
-+ <constant>KDBUS_CMD_SEND</constant>. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on how to send a message.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_MAKE_NAME</constant></term>
-+ <listitem><para>
-+ Contains a <emphasis>bus name</emphasis> or
-+ <emphasis>endpoint name</emphasis>, stored as null-terminated
-+ string in <varname>item.str</varname>. This item is sent from
-+ userspace to kernel when buses or endpoints are created, and
-+ returned back to userspace when the bus creator information is
-+ queried. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ and
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant></term>
-+ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_RECV</constant></term>
-+ <listitem><para>
-+ Contains a set of <emphasis>attach flags</emphasis> at
-+ <emphasis>send</emphasis> or <emphasis>receive</emphasis> time. See
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>,
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry> and
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on attach flags.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ID</constant></term>
-+ <listitem><para>
-+ Transports a connection's <emphasis>numerical ID</emphasis> of
-+ a connection as <type>uint64_t</type> value in
-+ <varname>item.id</varname>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NAME</constant></term>
-+ <listitem><para>
-+ Transports a name associated with the
-+ <emphasis>name registry</emphasis> as null-terminated string as
-+ <type>struct kdbus_name</type> in
-+ <varname>item.name</varname>. The <varname>flags</varname>
-+ contains the flags of the name. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on how to access the name registry of a bus.
-+ <programlisting>
-+struct kdbus_name {
-+ __u64 flags;
-+ char name[0];
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Items attached by the kernel as metadata</title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_TIMESTAMP</constant></term>
-+ <listitem><para>
-+ Contains both the <emphasis>monotonic</emphasis> and the
-+ <emphasis>realtime</emphasis> timestamp, taken when the message
-+ was processed on the kernel side.
-+ Stored as <type>struct kdbus_timestamp</type> in
-+ <varname>item.timestamp</varname>.
-+ <programlisting>
-+struct kdbus_timestamp {
-+ __u64 seqnum;
-+ __u64 monotonic_ns;
-+ __u64 realtime_ns;
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CREDS</constant></term>
-+ <listitem><para>
-+ Contains a set of <emphasis>user</emphasis> and
-+ <emphasis>group</emphasis> information as 32-bit values, in the
-+ usual four flavors: real, effective, saved and filesystem related.
-+ Stored as <type>struct kdbus_creds</type> in
-+ <varname>item.creds</varname>.
-+ <programlisting>
-+struct kdbus_creds {
-+ __u32 uid;
-+ __u32 euid;
-+ __u32 suid;
-+ __u32 fsuid;
-+ __u32 gid;
-+ __u32 egid;
-+ __u32 sgid;
-+ __u32 fsgid;
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_PIDS</constant></term>
-+ <listitem><para>
-+ Contains the <emphasis>PID</emphasis>, <emphasis>TID</emphasis>
-+ and <emphasis>parent PID (PPID)</emphasis> of a remote peer.
-+ Stored as <type>struct kdbus_pids</type> in
-+ <varname>item.pids</varname>.
-+ <programlisting>
-+struct kdbus_pids {
-+ __u64 pid;
-+ __u64 tid;
-+ __u64 ppid;
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_AUXGROUPS</constant></term>
-+ <listitem><para>
-+ Contains the <emphasis>auxiliary (supplementary) groups</emphasis>
-+ a remote peer is a member of, stored as array of
-+ <type>uint32_t</type> values in <varname>item.data32</varname>.
-+ The array length can be determined by looking at the item's total
-+ size, subtracting the size of the header and dividing the
-+ remainder by <constant>sizeof(uint32_t)</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_OWNED_NAME</constant></term>
-+ <listitem><para>
-+ Contains a <emphasis>well-known name</emphasis> currently owned
-+ by a connection. The name is stored as null-terminated string in
-+ <varname>item.str</varname>. Its length can also be derived from
-+ the item's total size.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_TID_COMM</constant> [*]</term>
-+ <listitem><para>
-+ Contains the <emphasis>comm</emphasis> string of a task's
-+ <emphasis>TID</emphasis> (thread ID), stored as null-terminated
-+ string in <varname>item.str</varname>. Its length can also be
-+ derived from the item's total size. Receivers of this item should
-+ not use its contents for any kind of security measures. See below.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_PID_COMM</constant> [*]</term>
-+ <listitem><para>
-+ Contains the <emphasis>comm</emphasis> string of a task's
-+ <emphasis>PID</emphasis> (process ID), stored as null-terminated
-+ string in <varname>item.str</varname>. Its length can also be
-+ derived from the item's total size. Receivers of this item should
-+ not use its contents for any kind of security measures. See below.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_EXE</constant> [*]</term>
-+ <listitem><para>
-+ Contains the <emphasis>path to the executable</emphasis> of a task,
-+ stored as null-terminated string in <varname>item.str</varname>. Its
-+ length can also be derived from the item's total size. Receivers of
-+ this item should not use its contents for any kind of security
-+ measures. See below.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CMDLINE</constant> [*]</term>
-+ <listitem><para>
-+ Contains the <emphasis>command line arguments</emphasis> of a
-+ task, stored as an <emphasis>array</emphasis> of null-terminated
-+ strings in <varname>item.str</varname>. The total length of all
-+ strings in the array can be derived from the item's total size.
-+ Receivers of this item should not use its contents for any kind
-+ of security measures. See below.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CGROUP</constant></term>
-+ <listitem><para>
-+ Contains the <emphasis>cgroup path</emphasis> of a task, stored
-+ as null-terminated string in <varname>item.str</varname>. Its
-+ length can also be derived from the item's total size.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CAPS</constant></term>
-+ <listitem><para>
-+ Contains sets of <emphasis>capabilities</emphasis>, stored as
-+ <type>struct kdbus_caps</type> in <varname>item.caps</varname>.
-+ As the item size may increase in the future, programs should be
-+ written in a way that it takes
-+ <varname>item.caps.last_cap</varname> into account, and derive
-+ the number of sets and rows from the item size and the reported
-+ number of valid capability bits.
-+ <programlisting>
-+struct kdbus_caps {
-+ __u32 last_cap;
-+ __u32 caps[0];
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_SECLABEL</constant></term>
-+ <listitem><para>
-+ Contains the <emphasis>LSM label</emphasis> of a task, stored as
-+ null-terminated string in <varname>item.str</varname>. Its length
-+ can also be derived from the item's total size.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_AUDIT</constant></term>
-+ <listitem><para>
-+ Contains the audit <emphasis>sessionid</emphasis> and
-+ <emphasis>loginuid</emphasis> of a task, stored as
-+ <type>struct kdbus_audit</type> in
-+ <varname>item.audit</varname>.
-+ <programlisting>
-+struct kdbus_audit {
-+ __u32 sessionid;
-+ __u32 loginuid;
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CONN_DESCRIPTION</constant></term>
-+ <listitem><para>
-+ Contains the <emphasis>connection description</emphasis>, as set
-+ by <constant>KDBUS_CMD_HELLO</constant> or
-+ <constant>KDBUS_CMD_CONN_UPDATE</constant>, stored as
-+ null-terminated string in <varname>item.str</varname>. Its length
-+ can also be derived from the item's total size.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ All metadata is automatically translated into the
-+ <emphasis>namespaces</emphasis> of the task that receives them. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information.
-+ </para>
-+
-+ <para>
-+ [*] Note that the content stored in metadata items of type
-+ <constant>KDBUS_ITEM_TID_COMM</constant>,
-+ <constant>KDBUS_ITEM_PID_COMM</constant>,
-+ <constant>KDBUS_ITEM_EXE</constant> and
-+ <constant>KDBUS_ITEM_CMDLINE</constant>
-+ can easily be tampered by the sending tasks. Therefore, they should
-+ <emphasis>not</emphasis> be used for any sort of security relevant
-+ assumptions. The only reason they are transmitted is to let
-+ receivers know about details that were set when metadata was
-+ collected, even though the task they were collected from is not
-+ active any longer when the items are received.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Items used for policy entries, matches and notifications</title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
-+ <listitem><para>
-+ This item describes a <emphasis>policy access</emphasis> entry to
-+ access the policy database of a
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry> or
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ Please refer to
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on the policy database and how to access it.
-+ <programlisting>
-+struct kdbus_policy_access {
-+ __u64 type;
-+ __u64 access;
-+ __u64 id;
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ID_ADD</constant></term>
-+ <term><constant>KDBUS_ITEM_ID_REMOVE</constant></term>
-+ <listitem><para>
-+ This item is sent as attachment to a
-+ <emphasis>kernel notification</emphasis> and indicates that a
-+ new connection was created on the bus, or that a connection was
-+ disconnected, respectively. It stores a
-+ <type>struct kdbus_notify_id_change</type> in
-+ <varname>item.id_change</varname>.
-+ The <varname>id</varname> field contains the numeric ID of the
-+ connection that was added or removed, and <varname>flags</varname>
-+ is set to the connection flags, as passed by
-+ <constant>KDBUS_CMD_HELLO</constant>. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ and
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on matches and notification messages.
-+ <programlisting>
-+struct kdbus_notify_id_change {
-+ __u64 id;
-+ __u64 flags;
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NAME_ADD</constant></term>
-+ <term><constant>KDBUS_ITEM_NAME_REMOVE</constant></term>
-+ <term><constant>KDBUS_ITEM_NAME_CHANGE</constant></term>
-+ <listitem><para>
-+ This item is sent as attachment to a
-+ <emphasis>kernel notification</emphasis> and indicates that a
-+ <emphasis>well-known name</emphasis> appeared, disappeared or
-+ transferred to another owner on the bus. It stores a
-+ <type>struct kdbus_notify_name_change</type> in
-+ <varname>item.name_change</varname>.
-+ <varname>old_id</varname> describes the former owner of the name
-+ and is set to <constant>0</constant> values in case of
-+ <constant>KDBUS_ITEM_NAME_ADD</constant>.
-+ <varname>new_id</varname> describes the new owner of the name and
-+ is set to <constant>0</constant> values in case of
-+ <constant>KDBUS_ITEM_NAME_REMOVE</constant>.
-+ The <varname>name</varname> field contains the well-known name the
-+ notification is about, as null-terminated string. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ and
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on matches and notification messages.
-+ <programlisting>
-+struct kdbus_notify_name_change {
-+ struct kdbus_notify_id_change old_id;
-+ struct kdbus_notify_id_change new_id;
-+ char name[0];
-+};
-+ </programlisting>
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_REPLY_TIMEOUT</constant></term>
-+ <listitem><para>
-+ This item is sent as attachment to a
-+ <emphasis>kernel notification</emphasis>. It informs the receiver
-+ that an expected reply to a message was not received in time.
-+ The remote peer ID and the message cookie are stored in the message
-+ header. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information about messages, timeouts and notifications.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_REPLY_DEAD</constant></term>
-+ <listitem><para>
-+ This item is sent as attachment to a
-+ <emphasis>kernel notification</emphasis>. It informs the receiver
-+ that a remote connection a reply is expected from was disconnected
-+ before that reply was sent. The remote peer ID and the message
-+ cookie are stored in the message header. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information about messages, timeouts and notifications.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>memfd_create</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.match.xml b/Documentation/kdbus/kdbus.match.xml
-new file mode 100644
-index 0000000..ae38e04
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.match.xml
-@@ -0,0 +1,555 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus.match">
-+
-+ <refentryinfo>
-+ <title>kdbus.match</title>
-+ <productname>kdbus.match</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.match</refname>
-+ <refpurpose>kdbus match</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+
-+ <para>
-+ kdbus connections can install matches in order to subscribe to signal
-+ messages sent on the bus. Such signal messages can be either directed
-+ to a single connection (by setting a specific connection ID in
-+ <varname>struct kdbus_msg.dst_id</varname> or by sending it to a
-+ well-known name), or to potentially <emphasis>all</emphasis> currently
-+ active connections on the bus (by setting
-+ <varname>struct kdbus_msg.dst_id</varname> to
-+ <constant>KDBUS_DST_ID_BROADCAST</constant>).
-+ A signal message always has the <constant>KDBUS_MSG_SIGNAL</constant>
-+ bit set in the <varname>flags</varname> bitfield.
-+ Also, signal messages can originate from either the kernel (called
-+ <emphasis>notifications</emphasis>), or from other bus connections.
-+ In either case, a bus connection needs to have a suitable
-+ <emphasis>match</emphasis> installed in order to receive any signal
-+ message. Without any rules installed in the connection, no signal message
-+ will be received.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Matches for signal messages from other connections</title>
-+ <para>
-+ Matches for messages from other connections (not kernel notifications)
-+ are implemented as bloom filters (see below). The sender adds certain
-+ properties of the message as elements to a bloom filter bit field, and
-+ sends that along with the signal message.
-+
-+ The receiving connection adds the message properties it is interested in
-+ as elements to a bloom mask bit field, and uploads the mask as match rule,
-+ possibly along with some other rules to further limit the match.
-+
-+ The kernel will match the signal message's bloom filter against the
-+ connection's bloom mask (simply by &-ing it), and will decide whether
-+ the message should be delivered to a connection.
-+ </para>
-+ <para>
-+ The kernel has no notion of any specific properties of the signal message,
-+ all it sees are the bit fields of the bloom filter and the mask to match
-+ against. The use of bloom filters allows simple and efficient matching,
-+ without exposing any message properties or internals to the kernel side.
-+ Clients need to deal with the fact that they might receive signal messages
-+ which they did not subscribe to, as the bloom filter might allow
-+ false-positives to pass the filter.
-+
-+ To allow the future extension of the set of elements in the bloom filter,
-+ the filter specifies a <emphasis>generation</emphasis> number. A later
-+ generation must always contain all elements of the set of the previous
-+ generation, but can add new elements to the set. The match rules mask can
-+ carry an array with all previous generations of masks individually stored.
-+ When the filter and mask are matched by the kernel, the mask with the
-+ closest matching generation is selected as the index into the mask array.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Bloom filters</title>
-+ <para>
-+ Bloom filters allow checking whether a given word is present in a
-+ dictionary. This allows connections to set up a mask for information it
-+ is interested in, and will be delivered signal messages that have a
-+ matching filter.
-+
-+ For general information, see
-+ <ulink url="https://en.wikipedia.org/wiki/Bloom_filter">the Wikipedia
-+ article on bloom filters</ulink>.
-+ </para>
-+ <para>
-+ The size of the bloom filter is defined per bus when it is created, in
-+ <varname>kdbus_bloom_parameter.size</varname>. All bloom filters attached
-+ to signal messages on the bus must match this size, and all bloom filter
-+ matches uploaded by connections must also match the size, or a multiple
-+ thereof (see below).
-+
-+ The calculation of the mask has to be done in userspace applications. The
-+ kernel just checks the bitmasks to decide whether or not to let the
-+ message pass. All bits in the mask must match the filter in and bit-wise
-+ <emphasis>AND</emphasis> logic, but the mask may have more bits set than
-+ the filter. Consequently, false positive matches are expected to happen,
-+ and programs must deal with that fact by checking the contents of the
-+ payload again at receive time.
-+ </para>
-+ <para>
-+ Masks are entities that are always passed to the kernel as part of a
-+ match (with an item of type <constant>KDBUS_ITEM_BLOOM_MASK</constant>),
-+ and filters can be attached to signals, with an item of type
-+ <constant>KDBUS_ITEM_BLOOM_FILTER</constant>. For a filter to match, all
-+ its bits have to be set in the match mask as well.
-+ </para>
-+ <para>
-+ For example, consider a bus that has a bloom size of 8 bytes, and the
-+ following mask/filter combinations:
-+ </para>
-+ <programlisting><![CDATA[
-+ filter 0x0101010101010101
-+ mask 0x0101010101010101
-+ -> matches
-+
-+ filter 0x0303030303030303
-+ mask 0x0101010101010101
-+ -> doesn't match
-+
-+ filter 0x0101010101010101
-+ mask 0x0303030303030303
-+ -> matches
-+ ]]></programlisting>
-+
-+ <para>
-+ Hence, in order to catch all messages, a mask filled with
-+ <constant>0xff</constant> bytes can be installed as a wildcard match rule.
-+ </para>
-+
-+ <refsect2>
-+ <title>Generations</title>
-+
-+ <para>
-+ Uploaded matches may contain multiple masks, which have to be as large
-+ as the bloom filter size defined by the bus. Each block of a mask is
-+ called a <emphasis>generation</emphasis>, starting at index 0.
-+
-+ At match time, when a signal is about to be delivered, a bloom mask
-+ generation is passed, which denotes which of the bloom masks the filter
-+ should be matched against. This allows programs to provide backward
-+ compatible masks at upload time, while older clients can still match
-+ against older versions of filters.
-+ </para>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Matches for kernel notifications</title>
-+ <para>
-+ To receive kernel generated notifications (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>),
-+ a connection must install match rules that are different from
-+ the bloom filter matches described in the section above. They can be
-+ filtered by the connection ID that caused the notification to be sent, by
-+ one of the names it currently owns, or by the type of the notification
-+ (ID/name add/remove/change).
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Adding a match</title>
-+ <para>
-+ To add a match, the <constant>KDBUS_CMD_MATCH_ADD</constant> ioctl is
-+ used, which takes a <type>struct kdbus_cmd_match</type> as an argument
-+ described below.
-+
-+ Note that each of the items attached to this command will internally
-+ create one match <emphasis>rule</emphasis>, and the collection of them,
-+ which is submitted as one block via the ioctl, is called a
-+ <emphasis>match</emphasis>. To allow a message to pass, all rules of a
-+ match have to be satisfied. Hence, adding more items to the command will
-+ only narrow the possibility of a match to effectively let the message
-+ pass, and will decrease the chance that the connection's process will be
-+ woken up needlessly.
-+
-+ Multiple matches can be installed per connection. As long as one of it has
-+ a set of rules which allows the message to pass, this one will be
-+ decisive.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd_match {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 cookie;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>Flags to control the behavior of the ioctl.</para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_MATCH_REPLACE</constant></term>
-+ <listitem>
-+ <para>Make the endpoint file group-accessible</para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Requests a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will return
-+ <errorcode>0</errorcode>, and the <varname>flags</varname>
-+ field will have all bits set that are valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>cookie</varname></term>
-+ <listitem><para>
-+ A cookie which identifies the match, so it can be referred to when
-+ removing it.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ Items to define the actual rules of the matches. The following item
-+ types are expected. Each item will create one new match rule.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_BLOOM_MASK</constant></term>
-+ <listitem>
-+ <para>
-+ An item that carries the bloom filter mask to match against
-+ in its data field. The payload size must match the bloom
-+ filter size that was specified when the bus was created.
-+ See the "Bloom filters" section above for more information on
-+ bloom filters.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NAME</constant></term>
-+ <listitem>
-+ <para>
-+ When used as part of kernel notifications, this item specifies
-+ a name that is acquired, lost or that changed its owner (see
-+ below). When used as part of a match for user-generated signal
-+ messages, it specifies a name that the sending connection must
-+ own at the time of sending the signal.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ID</constant></term>
-+ <listitem>
-+ <para>
-+ Specify a sender connection's ID that will match this rule.
-+ For kernel notifications, this specifies the ID of a
-+ connection that was added to or removed from the bus.
-+ For used-generated signals, it specifies the ID of the
-+ connection that sent the signal message.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NAME_ADD</constant></term>
-+ <term><constant>KDBUS_ITEM_NAME_REMOVE</constant></term>
-+ <term><constant>KDBUS_ITEM_NAME_CHANGE</constant></term>
-+ <listitem>
-+ <para>
-+ These items request delivery of kernel notifications that
-+ describe a name acquisition, loss, or change. The details
-+ are stored in the item's
-+ <varname>kdbus_notify_name_change</varname> member.
-+ All information specified must be matched in order to make
-+ the message pass. Use
-+ <constant>KDBUS_MATCH_ID_ANY</constant> to
-+ match against any unique connection ID.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ID_ADD</constant></term>
-+ <term><constant>KDBUS_ITEM_ID_REMOVE</constant></term>
-+ <listitem>
-+ <para>
-+ These items request delivery of kernel notifications that are
-+ generated when a connection is created or terminated.
-+ <type>struct kdbus_notify_id_change</type> is used to
-+ store the actual match information. This item can be used to
-+ monitor one particular connection ID, or, when the ID field
-+ is set to <constant>KDBUS_MATCH_ID_ANY</constant>,
-+ all of them.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
-+ <listitem><para>
-+ With this item, programs can <emphasis>probe</emphasis> the
-+ kernel for known item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Refer to
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on message types.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Removing a match</title>
-+ <para>
-+ Matches can be removed with the
-+ <constant>KDBUS_CMD_MATCH_REMOVE</constant> ioctl, which takes
-+ <type>struct kdbus_cmd_match</type> as argument, but its fields
-+ usage slightly differs compared to that of
-+ <constant>KDBUS_CMD_MATCH_ADD</constant>.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd_match {
-+ __u64 size;
-+ __u64 cookie;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>cookie</varname></term>
-+ <listitem><para>
-+ The cookie of the match, as it was passed when the match was added.
-+ All matches that have this cookie will be removed.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ No flags are supported for this use case.
-+ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
-+ valid flags. If set, the ioctl will fail with
-+ <errorcode>-1</errorcode>, <varname>errno</varname> is set to
-+ <constant>EPROTO</constant>, and the <varname>flags</varname> field
-+ is set to <constant>0</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ No items are supported for this use case, but
-+ <constant>KDBUS_ITEM_NEGOTIATE</constant> is allowed nevertheless.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Return value</title>
-+ <para>
-+ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
-+ on error, <errorcode>-1</errorcode> is returned, and
-+ <varname>errno</varname> is set to indicate the error.
-+ If the issued ioctl is illegal for the file descriptor used,
-+ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
-+ </para>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_MATCH_ADD</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Illegal flags or items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EDOM</constant></term>
-+ <listitem><para>
-+ Illegal bloom filter size.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EMFILE</constant></term>
-+ <listitem><para>
-+ Too many matches for this connection.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_MATCH_REMOVE</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Illegal flags.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EBADSLT</constant></term>
-+ <listitem><para>
-+ A match entry with the given cookie could not be found.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.message.xml b/Documentation/kdbus/kdbus.message.xml
-new file mode 100644
-index 0000000..0115d9d
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.message.xml
-@@ -0,0 +1,1276 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus.message">
-+
-+ <refentryinfo>
-+ <title>kdbus.message</title>
-+ <productname>kdbus.message</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.message</refname>
-+ <refpurpose>kdbus message</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+
-+ <para>
-+ A kdbus message is used to exchange information between two connections
-+ on a bus, or to transport notifications from the kernel to one or many
-+ connections. This document describes the layout of messages, how payload
-+ is added to them and how they are sent and received.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Message layout</title>
-+
-+ <para>The layout of a message is shown below.</para>
-+
-+ <programlisting>
-+ +-------------------------------------------------------------------------+
-+ | Message |
-+ | +---------------------------------------------------------------------+ |
-+ | | Header | |
-+ | | size: overall message size, including the data records | |
-+ | | destination: connection ID of the receiver | |
-+ | | source: connection ID of the sender (set by kernel) | |
-+ | | payload_type: "DBusDBus" textual identifier stored as uint64_t | |
-+ | +---------------------------------------------------------------------+ |
-+ | +---------------------------------------------------------------------+ |
-+ | | Data Record | |
-+ | | size: overall record size (without padding) | |
-+ | | type: type of data | |
-+ | | data: reference to data (address or file descriptor) | |
-+ | +---------------------------------------------------------------------+ |
-+ | +---------------------------------------------------------------------+ |
-+ | | padding bytes to the next 8 byte alignment | |
-+ | +---------------------------------------------------------------------+ |
-+ | +---------------------------------------------------------------------+ |
-+ | | Data Record | |
-+ | | size: overall record size (without padding) | |
-+ | | ... | |
-+ | +---------------------------------------------------------------------+ |
-+ | +---------------------------------------------------------------------+ |
-+ | | padding bytes to the next 8 byte alignment | |
-+ | +---------------------------------------------------------------------+ |
-+ | +---------------------------------------------------------------------+ |
-+ | | Data Record | |
-+ | | size: overall record size | |
-+ | | ... | |
-+ | +---------------------------------------------------------------------+ |
-+ | ... further data records ... |
-+ +-------------------------------------------------------------------------+
-+ </programlisting>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Message payload</title>
-+
-+ <para>
-+ When connecting to the bus, receivers request a memory pool of a given
-+ size, large enough to carry all backlog of data enqueued for the
-+ connection. The pool is internally backed by a shared memory file which
-+ can be <function>mmap()</function>ed by the receiver. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information.
-+ </para>
-+
-+ <para>
-+ Message payload must be described in items attached to a message when
-+ it is sent. A receiver can access the payload by looking at the items
-+ that are attached to a message in its pool. The following items are used.
-+ </para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_PAYLOAD_VEC</constant></term>
-+ <listitem>
-+ <para>
-+ This item references a piece of memory on the sender side which is
-+ directly copied into the receiver's pool. This way, two peers can
-+ exchange data by effectively doing a single-copy from one process
-+ to another; the kernel will not buffer the data anywhere else.
-+ This item is never found in a message received by a connection.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_PAYLOAD_OFF</constant></term>
-+ <listitem>
-+ <para>
-+ This item is attached to messages on the receiving side and points
-+ to a memory area inside the receiver's pool. The
-+ <varname>offset</varname> variable in the item denotes the memory
-+ location relative to the message itself.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant></term>
-+ <listitem>
-+ <para>
-+ Messages can reference <emphasis>memfd</emphasis> files which
-+ contain the data. memfd files are tmpfs-backed files that allow
-+ sealing of the content of the file, which prevents all writable
-+ access to the file content.
-+ </para>
-+ <para>
-+ Only memfds that have
-+ <constant>(F_SEAL_SHRINK|F_SEAL_GROW|F_SEAL_WRITE|F_SEAL_SEAL)
-+ </constant>
-+ set are accepted as payload data, which enforces reliable passing of
-+ data. The receiver can assume that neither the sender nor anyone
-+ else can alter the content after the message is sent. If those
-+ seals are not set on the memfd, the ioctl will fail with
-+ <errorcode>-1</errorcode>, and <varname>errno</varname> will be
-+ set to <constant>ETXTBUSY</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_FDS</constant></term>
-+ <listitem>
-+ <para>
-+ Messages can transport regular file descriptors via
-+ <constant>KDBUS_ITEM_FDS</constant>. This item carries an array
-+ of <type>int</type> values in <varname>item.fd</varname>. The
-+ maximum number of file descriptors in the item is
-+ <constant>253</constant>, and only one item of this type is
-+ accepted per message. All passed values must be valid file
-+ descriptors; the open count of each file descriptors is increased
-+ by installing it to the receiver's task. This item can only be
-+ used for directed messages, not for broadcasts, and only to
-+ remote peers that have opted-in for receiving file descriptors
-+ at connection time (<constant>KDBUS_HELLO_ACCEPT_FD</constant>).
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ The sender must not make any assumptions on the type in which data is
-+ received by the remote peer. The kernel is free to re-pack multiple
-+ <constant>KDBUS_ITEM_PAYLOAD_VEC</constant> and
-+ <constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant> payloads. For instance, the
-+ kernel may decide to merge multiple <constant>VECs</constant> into a
-+ single <constant>VEC</constant>, inline <constant>MEMFD</constant>
-+ payloads into memory, or merge all passed <constant>VECs</constant> into a
-+ single <constant>MEMFD</constant>. However, the kernel preserves the order
-+ of passed data. This means that the order of all <constant>VEC</constant>
-+ and <constant>MEMFD</constant> items is not changed in respect to each
-+ other. In other words: All passed <constant>VEC</constant> and
-+ <constant>MEMFD</constant> data payloads are treated as a single stream
-+ of data that may be received by the remote peer in a different set of
-+ chunks than it was sent as.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Sending messages</title>
-+
-+ <para>
-+ Messages are passed to the kernel with the
-+ <constant>KDBUS_CMD_SEND</constant> ioctl. Depending on the destination
-+ address of the message, the kernel delivers the message to the specific
-+ destination connection, or to some subset of all connections on the same
-+ bus. Sending messages across buses is not possible. Messages are always
-+ queued in the memory pool of the destination connection (see above).
-+ </para>
-+
-+ <para>
-+ The <constant>KDBUS_CMD_SEND</constant> ioctl uses a
-+ <type>struct kdbus_cmd_send</type> to describe the message
-+ transfer.
-+ </para>
-+ <programlisting>
-+struct kdbus_cmd_send {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 msg_address;
-+ struct kdbus_msg_info reply;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>Flags for message delivery</para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_SEND_SYNC_REPLY</constant></term>
-+ <listitem>
-+ <para>
-+ By default, all calls to kdbus are considered asynchronous,
-+ non-blocking. However, as there are many use cases that need
-+ to wait for a remote peer to answer a method call, there's a
-+ way to send a message and wait for a reply in a synchronous
-+ fashion. This is what the
-+ <constant>KDBUS_SEND_SYNC_REPLY</constant> controls. The
-+ <constant>KDBUS_CMD_SEND</constant> ioctl will block until the
-+ reply has arrived, the timeout limit is reached, in case the
-+ remote connection was shut down, or if interrupted by a signal
-+ before any reply; see
-+ <citerefentry>
-+ <refentrytitle>signal</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+
-+ The offset of the reply message in the sender's pool is stored
-+ in <varname>reply</varname> when the ioctl has returned without
-+ error. Hence, there is no need for another
-+ <constant>KDBUS_CMD_RECV</constant> ioctl or anything else to
-+ receive the reply.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Request a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will fail with
-+ <errorcode>-1</errorcode>, <varname>errno</varname>
-+ is set to <constant>EPROTO</constant>.
-+ Once the ioctl returned, the <varname>flags</varname>
-+ field will have all bits set that the kernel recognizes as
-+ valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>msg_address</varname></term>
-+ <listitem><para>
-+ In this field, users have to provide a pointer to a message
-+ (<type>struct kdbus_msg</type>) to send. See below for a
-+ detailed description.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>reply</varname></term>
-+ <listitem><para>
-+ Only used for synchronous replies. See description of
-+ <type>struct kdbus_cmd_recv</type> for more details.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ The following items are currently recognized.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_CANCEL_FD</constant></term>
-+ <listitem>
-+ <para>
-+ When this optional item is passed in, and the call is
-+ executed as SYNC call, the passed in file descriptor can be
-+ used as alternative cancellation point. The kernel will call
-+ <citerefentry>
-+ <refentrytitle>poll</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ on this file descriptor, and once it reports any incoming
-+ bytes, the blocking send operation will be canceled; the
-+ blocking, synchronous ioctl call will return
-+ <errorcode>-1</errorcode>, and <varname>errno</varname> will
-+ be set to <errorname>ECANCELED</errorname>.
-+ Any type of file descriptor on which
-+ <citerefentry>
-+ <refentrytitle>poll</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ can be called on can be used as payload to this item; for
-+ example, an eventfd can be used for this purpose, see
-+ <citerefentry>
-+ <refentrytitle>eventfd</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>.
-+ For asynchronous message sending, this item is allowed but
-+ ignored.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ The message referenced by the <varname>msg_address</varname> above has
-+ the following layout.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_msg {
-+ __u64 size;
-+ __u64 flags;
-+ __s64 priority;
-+ __u64 dst_id;
-+ __u64 src_id;
-+ __u64 payload_type;
-+ __u64 cookie;
-+ __u64 timeout_ns;
-+ __u64 cookie_reply;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>Flags to describe message details.</para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_MSG_EXPECT_REPLY</constant></term>
-+ <listitem>
-+ <para>
-+ Expect a reply to this message from the remote peer. With
-+ this bit set, the timeout_ns field must be set to a non-zero
-+ number of nanoseconds in which the receiving peer is expected
-+ to reply. If such a reply is not received in time, the sender
-+ will be notified with a timeout message (see below). The
-+ value must be an absolute value, in nanoseconds and based on
-+ <constant>CLOCK_MONOTONIC</constant>.
-+ </para><para>
-+ For a message to be accepted as reply, it must be a direct
-+ message to the original sender (not a broadcast and not a
-+ signal message), and its
-+ <varname>kdbus_msg.cookie_reply</varname> must match the
-+ previous message's <varname>kdbus_msg.cookie</varname>.
-+ </para><para>
-+ Expected replies also temporarily open the policy of the
-+ sending connection, so the other peer is allowed to respond
-+ within the given time window.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_MSG_NO_AUTO_START</constant></term>
-+ <listitem>
-+ <para>
-+ By default, when a message is sent to an activator
-+ connection, the activator is notified and will start an
-+ implementer. This flag inhibits that behavior. With this bit
-+ set, and the remote being an activator, the ioctl will fail
-+ with <varname>errno</varname> set to
-+ <constant>EADDRNOTAVAIL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Requests a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will return
-+ <errorcode>0</errorcode>, and the <varname>flags</varname>
-+ field will have all bits set that are valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>priority</varname></term>
-+ <listitem><para>
-+ The priority of this message. Receiving messages (see below) may
-+ optionally be constrained to messages of a minimal priority. This
-+ allows for use cases where timing critical data is interleaved with
-+ control data on the same connection. If unused, the priority field
-+ should be set to <constant>0</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>dst_id</varname></term>
-+ <listitem><para>
-+ The numeric ID of the destination connection, or
-+ <constant>KDBUS_DST_ID_BROADCAST</constant>
-+ (~0ULL) to address every peer on the bus, or
-+ <constant>KDBUS_DST_ID_NAME</constant> (0) to look
-+ it up dynamically from the bus' name registry.
-+ In the latter case, an item of type
-+ <constant>KDBUS_ITEM_DST_NAME</constant> is mandatory.
-+ Also see
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ .
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>src_id</varname></term>
-+ <listitem><para>
-+ Upon return of the ioctl, this member will contain the sending
-+ connection's numerical ID. Should be 0 at send time.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>payload_type</varname></term>
-+ <listitem><para>
-+ Type of the payload in the actual data records. Currently, only
-+ <constant>KDBUS_PAYLOAD_DBUS</constant> is accepted as input value
-+ of this field. When receiving messages that are generated by the
-+ kernel (notifications), this field will contain
-+ <constant>KDBUS_PAYLOAD_KERNEL</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>cookie</varname></term>
-+ <listitem><para>
-+ Cookie of this message, for later recognition. Also, when replying
-+ to a message (see above), the <varname>cookie_reply</varname>
-+ field must match this value.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>timeout_ns</varname></term>
-+ <listitem><para>
-+ If the message sent requires a reply from the remote peer (see above),
-+ this field contains the timeout in absolute nanoseconds based on
-+ <constant>CLOCK_MONOTONIC</constant>. Also see
-+ <citerefentry>
-+ <refentrytitle>clock_gettime</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>cookie_reply</varname></term>
-+ <listitem><para>
-+ If the message sent is a reply to another message, this field must
-+ match the cookie of the formerly received message.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ A dynamically sized list of items to contain additional information.
-+ The following items are expected/valid:
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_PAYLOAD_VEC</constant></term>
-+ <term><constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant></term>
-+ <term><constant>KDBUS_ITEM_FDS</constant></term>
-+ <listitem>
-+ <para>
-+ Actual data records containing the payload. See section
-+ "Message payload".
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_BLOOM_FILTER</constant></term>
-+ <listitem>
-+ <para>
-+ Bloom filter for matches (see below).
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_DST_NAME</constant></term>
-+ <listitem>
-+ <para>
-+ Well-known name to send this message to. Required if
-+ <varname>dst_id</varname> is set to
-+ <constant>KDBUS_DST_ID_NAME</constant>.
-+ If a connection holding the given name can't be found,
-+ the ioctl will fail with <varname>errno</varname> set to
-+ <constant>ESRCH</constant> is returned.
-+ </para>
-+ <para>
-+ For messages to a unique name (ID), this item is optional. If
-+ present, the kernel will make sure the name owner matches the
-+ given unique name. This allows programs to tie the message
-+ sending to the condition that a name is currently owned by a
-+ certain unique name.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ The message will be augmented by the requested metadata items when
-+ queued into the receiver's pool. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ and
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on metadata.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Receiving messages</title>
-+
-+ <para>
-+ Messages are received by the client with the
-+ <constant>KDBUS_CMD_RECV</constant> ioctl. The endpoint file of the bus
-+ supports <function>poll()/epoll()/select()</function>; when new messages
-+ are available on the connection's file descriptor,
-+ <constant>POLLIN</constant> is reported. For compatibility reasons,
-+ <constant>POLLOUT</constant> is always reported as well. Note, however,
-+ that the latter does not guarantee that a message can in fact be sent, as
-+ this depends on how many pending messages the receiver has in its pool.
-+ </para>
-+
-+ <para>
-+ With the <constant>KDBUS_CMD_RECV</constant> ioctl, a
-+ <type>struct kdbus_cmd_recv</type> is used.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd_recv {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __s64 priority;
-+ __u64 dropped_msgs;
-+ struct kdbus_msg_info msg;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>Flags to control the receive command.</para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_RECV_PEEK</constant></term>
-+ <listitem>
-+ <para>
-+ Just return the location of the next message. Do not install
-+ file descriptors or anything else. This is usually used to
-+ determine the sender of the next queued message.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_RECV_DROP</constant></term>
-+ <listitem>
-+ <para>
-+ Drop the next message without doing anything else with it,
-+ and free the pool slice. This a short-cut for
-+ <constant>KDBUS_RECV_PEEK</constant> and
-+ <constant>KDBUS_CMD_FREE</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_RECV_USE_PRIORITY</constant></term>
-+ <listitem>
-+ <para>
-+ Dequeue the messages ordered by their priority, and filtering
-+ them with the priority field (see below).
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Request a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will fail with
-+ <errorcode>-1</errorcode>, <varname>errno</varname>
-+ is set to <constant>EPROTO</constant>.
-+ Once the ioctl returned, the <varname>flags</varname>
-+ field will have all bits set that the kernel recognizes as
-+ valid for this command.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. If the <varname>dropped_msgs</varname>
-+ field is non-zero, <constant>KDBUS_RECV_RETURN_DROPPED_MSGS</constant>
-+ is set. If a file descriptor could not be installed, the
-+ <constant>KDBUS_RECV_RETURN_INCOMPLETE_FDS</constant> flag is set.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>priority</varname></term>
-+ <listitem><para>
-+ With <constant>KDBUS_RECV_USE_PRIORITY</constant> set in
-+ <varname>flags</varname>, messages will be dequeued ordered by their
-+ priority, starting with the highest value. Also, messages will be
-+ filtered by the value given in this field, so the returned message
-+ will at least have the requested priority. If no such message is
-+ waiting in the queue, the ioctl will fail, and
-+ <varname>errno</varname> will be set to <constant>EAGAIN</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>dropped_msgs</varname></term>
-+ <listitem><para>
-+ Whenever a message with <constant>KDBUS_MSG_SIGNAL</constant> is sent
-+ but cannot be queued on a peer (e.g., as it contains FDs but the peer
-+ does not support FDs, or there is no space left in the peer's pool)
-+ the 'dropped_msgs' counter of the peer is incremented. On the next
-+ RECV ioctl, the 'dropped_msgs' field is copied into the ioctl struct
-+ and cleared on the peer. If it was non-zero, the
-+ <constant>KDBUS_RECV_RETURN_DROPPED_MSGS</constant> flag will be set
-+ in <varname>return_flags</varname>. Note that this will only happen
-+ if the ioctl succeeded or failed with <constant>EAGAIN</constant>. In
-+ other error cases, the 'dropped_msgs' field of the peer is left
-+ untouched.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>msg</varname></term>
-+ <listitem><para>
-+ Embedded struct containing information on the received message when
-+ this command succeeded (see below).
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem><para>
-+ Items to specify further details for the receive command.
-+ Currently unused, and all items will be rejected with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Both <type>struct kdbus_cmd_recv</type> and
-+ <type>struct kdbus_cmd_send</type> embed
-+ <type>struct kdbus_msg_info</type>.
-+ For the <constant>KDBUS_CMD_SEND</constant> ioctl, it is used to catch
-+ synchronous replies, if one was requested, and is unused otherwise.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_msg_info {
-+ __u64 offset;
-+ __u64 msg_size;
-+ __u64 return_flags;
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>offset</varname></term>
-+ <listitem><para>
-+ Upon return of the ioctl, this field contains the offset in the
-+ receiver's memory pool. The memory must be freed with
-+ <constant>KDBUS_CMD_FREE</constant>. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further details.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>msg_size</varname></term>
-+ <listitem><para>
-+ Upon successful return of the ioctl, this field contains the size of
-+ the allocated slice at offset <varname>offset</varname>.
-+ It is the combination of the size of the stored
-+ <type>struct kdbus_msg</type> object plus all appended VECs.
-+ You can use it in combination with <varname>offset</varname> to map
-+ a single message, instead of mapping the entire pool. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for further details.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem>
-+ <para>
-+ Kernel-provided return flags. Currently, the following flags are
-+ defined.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_RECV_RETURN_INCOMPLETE_FDS</constant></term>
-+ <listitem>
-+ <para>
-+ The message contained memfds or file descriptors, and the
-+ kernel failed to install one or more of them at receive time.
-+ Most probably that happened because the maximum number of
-+ file descriptors for the receiver's task were exceeded.
-+ In such cases, the message is still delivered, so this is not
-+ a fatal condition. File descriptors numbers inside the
-+ <constant>KDBUS_ITEM_FDS</constant> item or memfd files
-+ referenced by <constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant>
-+ items which could not be installed will be set to
-+ <constant>-1</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Unless <constant>KDBUS_RECV_DROP</constant> was passed, the
-+ <varname>offset</varname> field contains the location of the new message
-+ inside the receiver's pool after the <constant>KDBUS_CMD_RECV</constant>
-+ ioctl was employed. The message is stored as <type>struct kdbus_msg</type>
-+ at this offset, and can be interpreted with the semantics described above.
-+ </para>
-+ <para>
-+ Also, if the connection allowed for file descriptor to be passed
-+ (<constant>KDBUS_HELLO_ACCEPT_FD</constant>), and if the message contained
-+ any, they will be installed into the receiving process when the
-+ <constant>KDBUS_CMD_RECV</constant> ioctl is called.
-+ <emphasis>memfds</emphasis> may always be part of the message payload.
-+ The receiving task is obliged to close all file descriptors appropriately
-+ once no longer needed. If <constant>KDBUS_RECV_PEEK</constant> is set, no
-+ file descriptors are installed. This allows for peeking at a message,
-+ looking at its metadata only and dropping it via
-+ <constant>KDBUS_RECV_DROP</constant>, without installing any of the file
-+ descriptors into the receiving process.
-+ </para>
-+ <para>
-+ The caller is obliged to call the <constant>KDBUS_CMD_FREE</constant>
-+ ioctl with the returned offset when the memory is no longer needed.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Notifications</title>
-+ <para>
-+ A kernel notification is a regular kdbus message with the following
-+ details.
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem><para>
-+ kdbus_msg.src_id == <constant>KDBUS_SRC_ID_KERNEL</constant>
-+ </para></listitem>
-+ <listitem><para>
-+ kdbus_msg.dst_id == <constant>KDBUS_DST_ID_BROADCAST</constant>
-+ </para></listitem>
-+ <listitem><para>
-+ kdbus_msg.payload_type == <constant>KDBUS_PAYLOAD_KERNEL</constant>
-+ </para></listitem>
-+ <listitem><para>
-+ Has exactly one of the items attached that are described below.
-+ </para></listitem>
-+ <listitem><para>
-+ Always has a timestamp item (<constant>KDBUS_ITEM_TIMESTAMP</constant>)
-+ attached.
-+ </para></listitem>
-+ </itemizedlist>
-+
-+ <para>
-+ The kernel will notify its users of the following events.
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem><para>
-+ When connection <emphasis>A</emphasis> is terminated while connection
-+ <emphasis>B</emphasis> is waiting for a reply from it, connection
-+ <emphasis>B</emphasis> is notified with a message with an item of
-+ type <constant>KDBUS_ITEM_REPLY_DEAD</constant>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ When connection <emphasis>A</emphasis> does not receive a reply from
-+ connection <emphasis>B</emphasis> within the specified timeout window,
-+ connection <emphasis>A</emphasis> will receive a message with an
-+ item of type <constant>KDBUS_ITEM_REPLY_TIMEOUT</constant>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ When an ordinary connection (not a monitor) is created on or removed
-+ from a bus, messages with an item of type
-+ <constant>KDBUS_ITEM_ID_ADD</constant> or
-+ <constant>KDBUS_ITEM_ID_REMOVE</constant>, respectively, are delivered
-+ to all bus members that match these messages through their match
-+ database. Eavesdroppers (monitor connections) do not cause such
-+ notifications to be sent. They are invisible on the bus.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ When a connection gains or loses ownership of a name, messages with an
-+ item of type <constant>KDBUS_ITEM_NAME_ADD</constant>,
-+ <constant>KDBUS_ITEM_NAME_REMOVE</constant> or
-+ <constant>KDBUS_ITEM_NAME_CHANGE</constant> are delivered to all bus
-+ members that match these messages through their match database.
-+ </para></listitem>
-+ </itemizedlist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Return value</title>
-+ <para>
-+ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
-+ on error, <errorcode>-1</errorcode> is returned, and
-+ <varname>errno</varname> is set to indicate the error.
-+ If the issued ioctl is illegal for the file descriptor used,
-+ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
-+ </para>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_SEND</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EOPNOTSUPP</constant></term>
-+ <listitem><para>
-+ The connection is not an ordinary connection, or the passed
-+ file descriptors in <constant>KDBUS_ITEM_FDS</constant> item are
-+ either kdbus handles or unix domain sockets. Both are currently
-+ unsupported.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ The submitted payload type is
-+ <constant>KDBUS_PAYLOAD_KERNEL</constant>,
-+ <constant>KDBUS_MSG_EXPECT_REPLY</constant> was set without timeout
-+ or cookie values, <constant>KDBUS_SEND_SYNC_REPLY</constant> was
-+ set without <constant>KDBUS_MSG_EXPECT_REPLY</constant>, an invalid
-+ item was supplied, <constant>src_id</constant> was non-zero and was
-+ different from the current connection's ID, a supplied memfd had a
-+ size of 0, or a string was not properly null-terminated.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ENOTUNIQ</constant></term>
-+ <listitem><para>
-+ The supplied destination is
-+ <constant>KDBUS_DST_ID_BROADCAST</constant> and either
-+ file descriptors were passed, or
-+ <constant>KDBUS_MSG_EXPECT_REPLY</constant> was set,
-+ or a timeout was given.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>E2BIG</constant></term>
-+ <listitem><para>
-+ Too many items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EMSGSIZE</constant></term>
-+ <listitem><para>
-+ The size of the message header and items or the payload vector
-+ is excessive.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EEXIST</constant></term>
-+ <listitem><para>
-+ Multiple <constant>KDBUS_ITEM_FDS</constant>,
-+ <constant>KDBUS_ITEM_BLOOM_FILTER</constant> or
-+ <constant>KDBUS_ITEM_DST_NAME</constant> items were supplied.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EBADF</constant></term>
-+ <listitem><para>
-+ The supplied <constant>KDBUS_ITEM_FDS</constant> or
-+ <constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant> items
-+ contained an illegal file descriptor.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EMEDIUMTYPE</constant></term>
-+ <listitem><para>
-+ The supplied memfd is not a sealed kdbus memfd.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EMFILE</constant></term>
-+ <listitem><para>
-+ Too many file descriptors inside a
-+ <constant>KDBUS_ITEM_FDS</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EBADMSG</constant></term>
-+ <listitem><para>
-+ An item had illegal size, both a <constant>dst_id</constant> and a
-+ <constant>KDBUS_ITEM_DST_NAME</constant> was given, or both a name
-+ and a bloom filter was given.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ETXTBSY</constant></term>
-+ <listitem><para>
-+ The supplied kdbus memfd file cannot be sealed or the seal
-+ was removed, because it is shared with other processes or
-+ still mapped with
-+ <citerefentry>
-+ <refentrytitle>mmap</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ECOMM</constant></term>
-+ <listitem><para>
-+ A peer does not accept the file descriptors addressed to it.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EFAULT</constant></term>
-+ <listitem><para>
-+ The supplied bloom filter size was not 64-bit aligned, or supplied
-+ memory could not be accessed by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EDOM</constant></term>
-+ <listitem><para>
-+ The supplied bloom filter size did not match the bloom filter
-+ size of the bus.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EDESTADDRREQ</constant></term>
-+ <listitem><para>
-+ <constant>dst_id</constant> was set to
-+ <constant>KDBUS_DST_ID_NAME</constant>, but no
-+ <constant>KDBUS_ITEM_DST_NAME</constant> was attached.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ESRCH</constant></term>
-+ <listitem><para>
-+ The name to look up was not found in the name registry.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EADDRNOTAVAIL</constant></term>
-+ <listitem><para>
-+ <constant>KDBUS_MSG_NO_AUTO_START</constant> was given but the
-+ destination connection is an activator.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ENXIO</constant></term>
-+ <listitem><para>
-+ The passed numeric destination connection ID couldn't be found,
-+ or is not connected.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ECONNRESET</constant></term>
-+ <listitem><para>
-+ The destination connection is no longer active.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ETIMEDOUT</constant></term>
-+ <listitem><para>
-+ Timeout while synchronously waiting for a reply.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINTR</constant></term>
-+ <listitem><para>
-+ Interrupted system call while synchronously waiting for a reply.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EPIPE</constant></term>
-+ <listitem><para>
-+ When sending a message, a synchronous reply from the receiving
-+ connection was expected but the connection died before answering.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ENOBUFS</constant></term>
-+ <listitem><para>
-+ Too many pending messages on the receiver side.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EREMCHG</constant></term>
-+ <listitem><para>
-+ Both a well-known name and a unique name (ID) was given, but
-+ the name is not currently owned by that connection.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EXFULL</constant></term>
-+ <listitem><para>
-+ The memory pool of the receiver is full.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EREMOTEIO</constant></term>
-+ <listitem><para>
-+ While synchronously waiting for a reply, the remote peer
-+ failed with an I/O error.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_RECV</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EOPNOTSUPP</constant></term>
-+ <listitem><para>
-+ The connection is not an ordinary connection, or the passed
-+ file descriptors are either kdbus handles or unix domain
-+ sockets. Both are currently unsupported.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Invalid flags or offset.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EAGAIN</constant></term>
-+ <listitem><para>
-+ No message found in the queue.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>clock_gettime</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>ioctl</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>poll</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>select</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>epoll</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>eventfd</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>memfd_create</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.name.xml b/Documentation/kdbus/kdbus.name.xml
-new file mode 100644
-index 0000000..3f5f6a6
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.name.xml
-@@ -0,0 +1,711 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus.name">
-+
-+ <refentryinfo>
-+ <title>kdbus.name</title>
-+ <productname>kdbus.name</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.name</refname>
-+ <refpurpose>kdbus.name</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+ <para>
-+ Each
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ instantiates a name registry to resolve well-known names into unique
-+ connection IDs for message delivery. The registry will be queried when a
-+ message is sent with <varname>kdbus_msg.dst_id</varname> set to
-+ <constant>KDBUS_DST_ID_NAME</constant>, or when a registry dump is
-+ requested with <constant>KDBUS_CMD_NAME_LIST</constant>.
-+ </para>
-+
-+ <para>
-+ All of the below is subject to policy rules for <emphasis>SEE</emphasis>
-+ and <emphasis>OWN</emphasis> permissions. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Name validity</title>
-+ <para>
-+ A name has to comply with the following rules in order to be considered
-+ valid.
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem>
-+ <para>
-+ The name has two or more elements separated by a
-+ '<literal>.</literal>' (period) character.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ All elements must contain at least one character.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ Each element must only contain the ASCII characters
-+ <literal>[A-Z][a-z][0-9]_</literal> and must not begin with a
-+ digit.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ The name must contain at least one '<literal>.</literal>' (period)
-+ character (and thus at least two elements).
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ The name must not begin with a '<literal>.</literal>' (period)
-+ character.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ The name must not exceed <constant>255</constant> characters in
-+ length.
-+ </para>
-+ </listitem>
-+ </itemizedlist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Acquiring a name</title>
-+ <para>
-+ To acquire a name, a client uses the
-+ <constant>KDBUS_CMD_NAME_ACQUIRE</constant> ioctl with
-+ <type>struct kdbus_cmd</type> as argument.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>Flags to control details in the name acquisition.</para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_NAME_REPLACE_EXISTING</constant></term>
-+ <listitem>
-+ <para>
-+ Acquiring a name that is already present usually fails,
-+ unless this flag is set in the call, and
-+ <constant>KDBUS_NAME_ALLOW_REPLACEMENT</constant> (see below)
-+ was set when the current owner of the name acquired it, or
-+ if the current owner is an activator connection (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>).
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_NAME_ALLOW_REPLACEMENT</constant></term>
-+ <listitem>
-+ <para>
-+ Allow other connections to take over this name. When this
-+ happens, the former owner of the connection will be notified
-+ of the name loss.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_NAME_QUEUE</constant></term>
-+ <listitem>
-+ <para>
-+ A name that is already acquired by a connection can not be
-+ acquired again (unless the
-+ <constant>KDBUS_NAME_ALLOW_REPLACEMENT</constant> flag was
-+ set during acquisition; see above).
-+ However, a connection can put itself in a queue of
-+ connections waiting for the name to be released. Once that
-+ happens, the first connection in that queue becomes the new
-+ owner and is notified accordingly.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Request a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will fail with
-+ <errorcode>-1</errorcode>, and <varname>errno</varname>
-+ is set to <constant>EPROTO</constant>.
-+ Once the ioctl returned, the <varname>flags</varname>
-+ field will have all bits set that the kernel recognizes as
-+ valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem>
-+ <para>
-+ Flags returned by the kernel. Currently, the following may be
-+ returned by the kernel.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_NAME_IN_QUEUE</constant></term>
-+ <listitem>
-+ <para>
-+ The name was not acquired yet, but the connection was
-+ placed in the queue of peers waiting for the name.
-+ This can only happen if <constant>KDBUS_NAME_QUEUE</constant>
-+ was set in the <varname>flags</varname> member (see above).
-+ The connection will receive a name owner change notification
-+ once the current owner has given up the name and its
-+ ownership was transferred.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ Items to submit the name. Currently, one item of type
-+ <constant>KDBUS_ITEM_NAME</constant> is expected and allowed, and
-+ the contained string must be a valid bus name.
-+ <constant>KDBUS_ITEM_NEGOTIATE</constant> may be used to probe for
-+ valid item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for a detailed description of how this item is used.
-+ </para>
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <errorname>>EINVAL</errorname>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Releasing a name</title>
-+ <para>
-+ A connection may release a name explicitly with the
-+ <constant>KDBUS_CMD_NAME_RELEASE</constant> ioctl. If the connection was
-+ an implementer of an activatable name, its pending messages are moved
-+ back to the activator. If there are any connections queued up as waiters
-+ for the name, the first one in the queue (the oldest entry) will become
-+ the new owner. The same happens implicitly for all names once a
-+ connection terminates. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on connections.
-+ </para>
-+ <para>
-+ The <constant>KDBUS_CMD_NAME_RELEASE</constant> ioctl uses the same data
-+ structure as the acquisition call
-+ (<constant>KDBUS_CMD_NAME_ACQUIRE</constant>),
-+ but with slightly different field usage.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ Flags to the command. Currently unused.
-+ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
-+ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
-+ and the <varname>flags</varname> field is set to
-+ <constant>0</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ Items to submit the name. Currently, one item of type
-+ <constant>KDBUS_ITEM_NAME</constant> is expected and allowed, and
-+ the contained string must be a valid bus name.
-+ <constant>KDBUS_ITEM_NEGOTIATE</constant> may be used to probe for
-+ valid item types. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for a detailed description of how this item is used.
-+ </para>
-+ <para>
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Dumping the name registry</title>
-+ <para>
-+ A connection may request a complete or filtered dump of currently active
-+ bus names with the <constant>KDBUS_CMD_LIST</constant> ioctl, which
-+ takes a <type>struct kdbus_cmd_list</type> as argument.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_cmd_list {
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 offset;
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem>
-+ <para>
-+ Any combination of flags to specify which names should be dumped.
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_LIST_UNIQUE</constant></term>
-+ <listitem>
-+ <para>
-+ List the unique (numeric) IDs of the connection, whether it
-+ owns a name or not.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_LIST_NAMES</constant></term>
-+ <listitem>
-+ <para>
-+ List well-known names stored in the database which are
-+ actively owned by a real connection (not an activator).
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_LIST_ACTIVATORS</constant></term>
-+ <listitem>
-+ <para>
-+ List names that are owned by an activator.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_LIST_QUEUED</constant></term>
-+ <listitem>
-+ <para>
-+ List connections that are not yet owning a name but are
-+ waiting for it to become available.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Request a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will fail with
-+ <errorcode>-1</errorcode>, and <varname>errno</varname>
-+ is set to <constant>EPROTO</constant>.
-+ Once the ioctl returned, the <varname>flags</varname>
-+ field will have all bits set that the kernel recognizes as
-+ valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>offset</varname></term>
-+ <listitem><para>
-+ When the ioctl returns successfully, the offset to the name registry
-+ dump inside the connection's pool will be stored in this field.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ The returned list of names is stored in a <type>struct kdbus_list</type>
-+ that in turn contains an array of type <type>struct kdbus_info</type>,
-+ The array-size in bytes is given as <varname>list_size</varname>.
-+ The fields inside <type>struct kdbus_info</type> is described next.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_info {
-+ __u64 size;
-+ __u64 id;
-+ __u64 flags;
-+ struct kdbus_item items[0];
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>id</varname></term>
-+ <listitem><para>
-+ The owning connection's unique ID.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ The flags of the owning connection.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem>
-+ <para>
-+ Items containing the actual name. Currently, one item of type
-+ <constant>KDBUS_ITEM_OWNED_NAME</constant> will be attached,
-+ including the name's flags. In that item, the flags field of the
-+ name may carry the following bits:
-+ </para>
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_NAME_ALLOW_REPLACEMENT</constant></term>
-+ <listitem>
-+ <para>
-+ Other connections are allowed to take over this name from the
-+ connection that owns it.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_NAME_IN_QUEUE</constant></term>
-+ <listitem>
-+ <para>
-+ When retrieving a list of currently acquired names in the
-+ registry, this flag indicates whether the connection
-+ actually owns the name or is currently waiting for it to
-+ become available.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_NAME_ACTIVATOR</constant></term>
-+ <listitem>
-+ <para>
-+ An activator connection owns a name as a placeholder for an
-+ implementer, which is started on demand by programs as soon
-+ as the first message arrives. There's some more information
-+ on this topic in
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ .
-+ </para>
-+ <para>
-+ In contrast to
-+ <constant>KDBUS_NAME_REPLACE_EXISTING</constant>,
-+ when a name is taken over from an activator connection, all
-+ the messages that have been queued in the activator
-+ connection will be moved over to the new owner. The activator
-+ connection will still be tracked for the name and will take
-+ control again if the implementer connection terminates.
-+ </para>
-+ <para>
-+ This flag can not be used when acquiring a name, but is
-+ implicitly set through <constant>KDBUS_CMD_HELLO</constant>
-+ with <constant>KDBUS_HELLO_ACTIVATOR</constant> set in
-+ <varname>kdbus_cmd_hello.conn_flags</varname>.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
-+ <listitem>
-+ <para>
-+ Requests a set of valid flags for this ioctl. When this bit is
-+ set, no action is taken; the ioctl will return
-+ <errorcode>0</errorcode>, and the <varname>flags</varname>
-+ field will have all bits set that are valid for this command.
-+ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
-+ cleared by the operation.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ The returned buffer must be freed with the
-+ <constant>KDBUS_CMD_FREE</constant> ioctl when the user is finished with
-+ it. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Return value</title>
-+ <para>
-+ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
-+ on error, <errorcode>-1</errorcode> is returned, and
-+ <varname>errno</varname> is set to indicate the error.
-+ If the issued ioctl is illegal for the file descriptor used,
-+ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
-+ </para>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_NAME_ACQUIRE</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Illegal command flags, illegal name provided, or an activator
-+ tried to acquire a second name.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EPERM</constant></term>
-+ <listitem><para>
-+ Policy prohibited name ownership.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EALREADY</constant></term>
-+ <listitem><para>
-+ Connection already owns that name.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EEXIST</constant></term>
-+ <listitem><para>
-+ The name already exists and can not be taken over.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>E2BIG</constant></term>
-+ <listitem><para>
-+ The maximum number of well-known names per connection is exhausted.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_NAME_RELEASE</constant>
-+ may fail with the following errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Invalid command flags, or invalid name provided.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ESRCH</constant></term>
-+ <listitem><para>
-+ Name is not found in the registry.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EADDRINUSE</constant></term>
-+ <listitem><para>
-+ Name is owned by a different connection and can't be released.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_LIST</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Invalid command flags
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>ENOBUFS</constant></term>
-+ <listitem><para>
-+ No available memory in the connection's pool.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.policy.xml b/Documentation/kdbus/kdbus.policy.xml
-new file mode 100644
-index 0000000..6732416
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.policy.xml
-@@ -0,0 +1,406 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus.policy">
-+
-+ <refentryinfo>
-+ <title>kdbus.policy</title>
-+ <productname>kdbus.policy</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.policy</refname>
-+ <refpurpose>kdbus policy</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+
-+ <para>
-+ A kdbus policy restricts the possibilities of connections to own, see and
-+ talk to well-known names. A policy can be associated with a bus (through a
-+ policy holder connection) or a custom endpoint. kdbus stores its policy
-+ information in a database that can be accessed through the following
-+ ioctl commands:
-+ </para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_CMD_HELLO</constant></term>
-+ <listitem><para>
-+ When creating, or updating, a policy holder connection. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_CMD_ENDPOINT_MAKE</constant></term>
-+ <term><constant>KDBUS_CMD_ENDPOINT_UPDATE</constant></term>
-+ <listitem><para>
-+ When creating, or updating, a bus custom endpoint. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ In all cases, the name and policy access information is stored in items
-+ of type <constant>KDBUS_ITEM_NAME</constant> and
-+ <constant>KDBUS_ITEM_POLICY_ACCESS</constant>. For this transport, the
-+ following rules apply.
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem>
-+ <para>
-+ An item of type <constant>KDBUS_ITEM_NAME</constant> must be followed
-+ by at least one <constant>KDBUS_ITEM_POLICY_ACCESS</constant> item.
-+ </para>
-+ </listitem>
-+
-+ <listitem>
-+ <para>
-+ An item of type <constant>KDBUS_ITEM_NAME</constant> can be followed
-+ by an arbitrary number of
-+ <constant>KDBUS_ITEM_POLICY_ACCESS</constant> items.
-+ </para>
-+ </listitem>
-+
-+ <listitem>
-+ <para>
-+ An arbitrary number of groups of names and access levels can be given.
-+ </para>
-+ </listitem>
-+ </itemizedlist>
-+
-+ <para>
-+ Names passed in items of type <constant>KDBUS_ITEM_NAME</constant> must
-+ comply to the rules of valid kdbus.name. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information.
-+
-+ The payload of an item of type
-+ <constant>KDBUS_ITEM_POLICY_ACCESS</constant> is defined by the following
-+ struct. For more information on the layout of items, please refer to
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para>
-+
-+ <programlisting>
-+struct kdbus_policy_access {
-+ __u64 type;
-+ __u64 access;
-+ __u64 id;
-+};
-+ </programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>type</varname></term>
-+ <listitem>
-+ <para>
-+ One of the following.
-+ </para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_POLICY_ACCESS_USER</constant></term>
-+ <listitem><para>
-+ Grant access to a user with the UID stored in the
-+ <varname>id</varname> field.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_POLICY_ACCESS_GROUP</constant></term>
-+ <listitem><para>
-+ Grant access to a user with the GID stored in the
-+ <varname>id</varname> field.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_POLICY_ACCESS_WORLD</constant></term>
-+ <listitem><para>
-+ Grant access to everyone. The <varname>id</varname> field
-+ is ignored.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>access</varname></term>
-+ <listitem>
-+ <para>
-+ The access to grant. One of the following.
-+ </para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_POLICY_SEE</constant></term>
-+ <listitem><para>
-+ Allow the name to be seen.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_POLICY_TALK</constant></term>
-+ <listitem><para>
-+ Allow the name to be talked to.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_POLICY_OWN</constant></term>
-+ <listitem><para>
-+ Allow the name to be owned.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>id</varname></term>
-+ <listitem><para>
-+ For <constant>KDBUS_POLICY_ACCESS_USER</constant>, stores the UID.
-+ For <constant>KDBUS_POLICY_ACCESS_GROUP</constant>, stores the GID.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ </variablelist>
-+
-+ <para>
-+ All endpoints of buses have an empty policy database by default.
-+ Therefore, unless policy rules are added, all operations will also be
-+ denied by default. Also see
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Wildcard names</title>
-+ <para>
-+ Policy holder connections may upload names that contain the wildcard
-+ suffix (<literal>".*"</literal>). Such a policy entry is effective for
-+ every well-known name that extends the provided name by exactly one more
-+ level.
-+
-+ For example, the name <literal>foo.bar.*</literal> matches both
-+ <literal>"foo.bar.baz"</literal> and
-+ <literal>"foo.bar.bazbaz"</literal> are, but not
-+ <literal>"foo.bar.baz.baz"</literal>.
-+
-+ This allows connections to take control over multiple names that the
-+ policy holder doesn't need to know about when uploading the policy.
-+
-+ Such wildcard entries are not allowed for custom endpoints.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Privileged connections</title>
-+ <para>
-+ The policy database is overruled when action is taken by a privileged
-+ connection. Please refer to
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information on what makes a connection privileged.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Examples</title>
-+ <para>
-+ For instance, a set of policy rules may look like this:
-+ </para>
-+
-+ <programlisting>
-+KDBUS_ITEM_NAME: str='org.foo.bar'
-+KDBUS_ITEM_POLICY_ACCESS: type=USER, access=OWN, ID=1000
-+KDBUS_ITEM_POLICY_ACCESS: type=USER, access=TALK, ID=1001
-+KDBUS_ITEM_POLICY_ACCESS: type=WORLD, access=SEE
-+
-+KDBUS_ITEM_NAME: str='org.blah.baz'
-+KDBUS_ITEM_POLICY_ACCESS: type=USER, access=OWN, ID=0
-+KDBUS_ITEM_POLICY_ACCESS: type=WORLD, access=TALK
-+ </programlisting>
-+
-+ <para>
-+ That means that 'org.foo.bar' may only be owned by UID 1000, but every
-+ user on the bus is allowed to see the name. However, only UID 1001 may
-+ actually send a message to the connection and receive a reply from it.
-+
-+ The second rule allows 'org.blah.baz' to be owned by UID 0 only, but
-+ every user may talk to it.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>TALK access and multiple well-known names per connection</title>
-+ <para>
-+ Note that TALK access is checked against all names of a connection. For
-+ example, if a connection owns both <constant>'org.foo.bar'</constant> and
-+ <constant>'org.blah.baz'</constant>, and the policy database allows
-+ <constant>'org.blah.baz'</constant> to be talked to by WORLD, then this
-+ permission is also granted to <constant>'org.foo.bar'</constant>. That
-+ might sound illogical, but after all, we allow messages to be directed to
-+ either the ID or a well-known name, and policy is applied to the
-+ connection, not the name. In other words, the effective TALK policy for a
-+ connection is the most permissive of all names the connection owns.
-+
-+ For broadcast messages, the receiver needs TALK permissions to the sender
-+ to receive the broadcast.
-+ </para>
-+ <para>
-+ Both the endpoint and the bus policy databases are consulted to allow
-+ name registry listing, owning a well-known name and message delivery.
-+ If either one fails, the operation is failed with
-+ <varname>errno</varname> set to <constant>EPERM</constant>.
-+
-+ For best practices, connections that own names with a restricted TALK
-+ access should not install matches. This avoids cases where the sent
-+ message may pass the bloom filter due to false-positives and may also
-+ satisfy the policy rules.
-+
-+ Also see
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Implicit policies</title>
-+ <para>
-+ Depending on the type of the endpoint, a set of implicit rules that
-+ override installed policies might be enforced.
-+
-+ On default endpoints, the following set is enforced and checked before
-+ any user-supplied policy is checked.
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem>
-+ <para>
-+ Privileged connections always override any installed policy. Those
-+ connections could easily install their own policies, so there is no
-+ reason to enforce installed policies.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ Connections can always talk to connections of the same user. This
-+ includes broadcast messages.
-+ </para>
-+ </listitem>
-+ </itemizedlist>
-+
-+ <para>
-+ Custom endpoints have stricter policies. The following rules apply:
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem>
-+ <para>
-+ Policy rules are always enforced, even if the connection is a
-+ privileged connection.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ Policy rules are always enforced for <constant>TALK</constant> access,
-+ even if both ends are running under the same user. This includes
-+ broadcast messages.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ To restrict the set of names that can be seen, endpoint policies can
-+ install <constant>SEE</constant> policies.
-+ </para>
-+ </listitem>
-+ </itemizedlist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.pool.xml b/Documentation/kdbus/kdbus.pool.xml
-new file mode 100644
-index 0000000..a9e16f1
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.pool.xml
-@@ -0,0 +1,326 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus.pool">
-+
-+ <refentryinfo>
-+ <title>kdbus.pool</title>
-+ <productname>kdbus.pool</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus.pool</refname>
-+ <refpurpose>kdbus pool</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Description</title>
-+ <para>
-+ A pool for data received from the kernel is installed for every
-+ <emphasis>connection</emphasis> of the <emphasis>bus</emphasis>, and
-+ is sized according to the information stored in the
-+ <varname>pool_size</varname> member of <type>struct kdbus_cmd_hello</type>
-+ when <constant>KDBUS_CMD_HELLO</constant> is employed. Internally, the
-+ pool is segmented into <emphasis>slices</emphasis>, each referenced by its
-+ <emphasis>offset</emphasis> in the pool, expressed in <type>bytes</type>.
-+ See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more information about <constant>KDBUS_CMD_HELLO</constant>.
-+ </para>
-+
-+ <para>
-+ The pool is written to by the kernel when one of the following
-+ <emphasis>ioctls</emphasis> is issued:
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_CMD_HELLO</constant></term>
-+ <listitem><para>
-+ ... to receive details about the bus the connection was made to
-+ </para></listitem>
-+ </varlistentry>
-+ <varlistentry>
-+ <term><constant>KDBUS_CMD_RECV</constant></term>
-+ <listitem><para>
-+ ... to receive a message
-+ </para></listitem>
-+ </varlistentry>
-+ <varlistentry>
-+ <term><constant>KDBUS_CMD_LIST</constant></term>
-+ <listitem><para>
-+ ... to dump the name registry
-+ </para></listitem>
-+ </varlistentry>
-+ <varlistentry>
-+ <term><constant>KDBUS_CMD_CONN_INFO</constant></term>
-+ <listitem><para>
-+ ... to retrieve information on a connection
-+ </para></listitem>
-+ </varlistentry>
-+ <varlistentry>
-+ <term><constant>KDBUS_CMD_BUS_CREATOR_INFO</constant></term>
-+ <listitem><para>
-+ ... to retrieve information about a connection's bus creator
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ </para>
-+ <para>
-+ The <varname>offset</varname> fields returned by either one of the
-+ aforementioned ioctls describe offsets inside the pool. In order to make
-+ the slice available for subsequent calls,
-+ <constant>KDBUS_CMD_FREE</constant> has to be called on that offset
-+ (see below). Otherwise, the pool will fill up, and the connection won't
-+ be able to receive any more information through its pool.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Pool slice allocation</title>
-+ <para>
-+ Pool slices are allocated by the kernel in order to report information
-+ back to a task, such as messages, returned name list etc.
-+ Allocation of pool slices cannot be initiated by userspace. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ and
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for examples of commands that use the <emphasis>pool</emphasis> to
-+ return data.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Accessing the pool memory</title>
-+ <para>
-+ Memory in the pool is read-only for userspace and may only be written
-+ to by the kernel. To read from the pool memory, the caller is expected to
-+ <citerefentry>
-+ <refentrytitle>mmap</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ the buffer into its task, like this:
-+ </para>
-+ <programlisting>
-+uint8_t *buf = mmap(NULL, size, PROT_READ, MAP_SHARED, conn_fd, 0);
-+ </programlisting>
-+
-+ <para>
-+ In order to map the entire pool, the <varname>size</varname> parameter in
-+ the example above should be set to the value of the
-+ <varname>pool_size</varname> member of
-+ <type>struct kdbus_cmd_hello</type> when
-+ <constant>KDBUS_CMD_HELLO</constant> was employed to create the
-+ connection (see above).
-+ </para>
-+
-+ <para>
-+ The <emphasis>file descriptor</emphasis> used to map the memory must be
-+ the one that was used to create the <emphasis>connection</emphasis>.
-+ In other words, the one that was used to call
-+ <constant>KDBUS_CMD_HELLO</constant>. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+
-+ <para>
-+ Alternatively, instead of mapping the entire pool buffer, only parts
-+ of it can be mapped. Every kdbus command that returns an
-+ <emphasis>offset</emphasis> (see above) also reports a
-+ <emphasis>size</emphasis> along with it, so programs can be written
-+ in a way that it only maps portions of the pool to access a specific
-+ <emphasis>slice</emphasis>.
-+ </para>
-+
-+ <para>
-+ When access to the pool memory is no longer needed, programs should
-+ call <function>munmap()</function> on the pointer returned by
-+ <function>mmap()</function>.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Freeing pool slices</title>
-+ <para>
-+ The <constant>KDBUS_CMD_FREE</constant> ioctl is used to free a slice
-+ inside the pool, describing an offset that was returned in an
-+ <varname>offset</varname> field of another ioctl struct.
-+ The <constant>KDBUS_CMD_FREE</constant> command takes a
-+ <type>struct kdbus_cmd_free</type> as argument.
-+ </para>
-+
-+<programlisting>
-+struct kdbus_cmd_free {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 offset;
-+ struct kdbus_item items[0];
-+};
-+</programlisting>
-+
-+ <para>The fields in this struct are described below.</para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><varname>size</varname></term>
-+ <listitem><para>
-+ The overall size of the struct, including its items.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>flags</varname></term>
-+ <listitem><para>
-+ Currently unused.
-+ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
-+ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
-+ and the <varname>flags</varname> field is set to
-+ <constant>0</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>return_flags</varname></term>
-+ <listitem><para>
-+ Flags returned by the kernel. Currently unused and always set to
-+ <constant>0</constant> by the kernel.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>offset</varname></term>
-+ <listitem><para>
-+ The offset to free, as returned by other ioctls that allocated
-+ memory for returned information.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><varname>items</varname></term>
-+ <listitem><para>
-+ Items to specify further details for the receive command.
-+ Currently unused.
-+ Unrecognized items are rejected, and the ioctl will fail with
-+ <varname>errno</varname> set to <constant>EINVAL</constant>.
-+ All items except for
-+ <constant>KDBUS_ITEM_NEGOTIATE</constant> (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ ) will be rejected.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Return value</title>
-+ <para>
-+ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
-+ on error, <errorcode>-1</errorcode> is returned, and
-+ <varname>errno</varname> is set to indicate the error.
-+ If the issued ioctl is illegal for the file descriptor used,
-+ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
-+ </para>
-+
-+ <refsect2>
-+ <title>
-+ <constant>KDBUS_CMD_FREE</constant> may fail with the following
-+ errors
-+ </title>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>ENXIO</constant></term>
-+ <listitem><para>
-+ No pool slice found at given offset.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ Invalid flags provided.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>EINVAL</constant></term>
-+ <listitem><para>
-+ The offset is valid, but the user is not allowed to free the slice.
-+ This happens, for example, if the offset was retrieved with
-+ <constant>KDBUS_RECV_PEEK</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>mmap</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>munmap</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+</refentry>
-diff --git a/Documentation/kdbus/kdbus.xml b/Documentation/kdbus/kdbus.xml
-new file mode 100644
-index 0000000..d8e7400
---- /dev/null
-+++ b/Documentation/kdbus/kdbus.xml
-@@ -0,0 +1,1012 @@
-+<?xml version='1.0'?> <!--*-nxml-*-->
-+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-+
-+<refentry id="kdbus">
-+
-+ <refentryinfo>
-+ <title>kdbus</title>
-+ <productname>kdbus</productname>
-+ </refentryinfo>
-+
-+ <refmeta>
-+ <refentrytitle>kdbus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </refmeta>
-+
-+ <refnamediv>
-+ <refname>kdbus</refname>
-+ <refpurpose>Kernel Message Bus</refpurpose>
-+ </refnamediv>
-+
-+ <refsect1>
-+ <title>Synopsis</title>
-+ <para>
-+ kdbus is an inter-process communication bus system controlled by the
-+ kernel. It provides user-space with an API to create buses and send
-+ unicast and multicast messages to one, or many, peers connected to the
-+ same bus. It does not enforce any layout on the transmitted data, but
-+ only provides the transport layer used for message interchange between
-+ peers.
-+ </para>
-+ <para>
-+ This set of man-pages gives a comprehensive overview of the kernel-level
-+ API, with all ioctl commands, associated structs and bit masks. However,
-+ most people will not use this API level directly, but rather let one of
-+ the high-level abstraction libraries help them integrate D-Bus
-+ functionality into their applications.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Description</title>
-+ <para>
-+ kdbus provides a pseudo filesystem called <emphasis>kdbusfs</emphasis>,
-+ which is usually mounted on <filename>/sys/fs/kdbus</filename>. Bus
-+ primitives can be accessed as files and sub-directories underneath this
-+ mount-point. Any advanced operations are done via
-+ <function>ioctl()</function> on files created by
-+ <emphasis>kdbusfs</emphasis>. Multiple mount-points of
-+ <emphasis>kdbusfs</emphasis> are independent of each other. This allows
-+ namespacing of kdbus by mounting a new instance of
-+ <emphasis>kdbusfs</emphasis> in a new mount-namespace. kdbus calls these
-+ mount instances domains and each bus belongs to exactly one domain.
-+ </para>
-+
-+ <para>
-+ kdbus was designed as a transport layer for D-Bus, but is in no way
-+ limited, nor controlled by the D-Bus protocol specification. The D-Bus
-+ protocol is one possible application layer on top of kdbus.
-+ </para>
-+
-+ <para>
-+ For the general D-Bus protocol specification, its payload format, its
-+ marshaling, and its communication semantics, please refer to the
-+ <ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html">
-+ D-Bus specification</ulink>.
-+ </para>
-+
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Terminology</title>
-+
-+ <refsect2>
-+ <title>Domain</title>
-+ <para>
-+ A domain is a <emphasis>kdbusfs</emphasis> mount-point containing all
-+ the bus primitives. Each domain is independent, and separate domains
-+ do not affect each other.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Bus</title>
-+ <para>
-+ A bus is a named object inside a domain. Clients exchange messages
-+ over a bus. Multiple buses themselves have no connection to each other;
-+ messages can only be exchanged on the same bus. The default endpoint of
-+ a bus, to which clients establish connections, is the "bus" file
-+ /sys/fs/kdbus/<bus name>/bus.
-+ Common operating system setups create one "system bus" per system,
-+ and one "user bus" for every logged-in user. Applications or services
-+ may create their own private buses. The kernel driver does not
-+ distinguish between different bus types, they are all handled the same
-+ way. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Endpoint</title>
-+ <para>
-+ An endpoint provides a file to talk to a bus. Opening an endpoint
-+ creates a new connection to the bus to which the endpoint belongs. All
-+ endpoints have unique names and are accessible as files underneath the
-+ directory of a bus, e.g., /sys/fs/kdbus/<bus>/<endpoint>
-+ Every bus has a default endpoint called "bus".
-+ A bus can optionally offer additional endpoints with custom names
-+ to provide restricted access to the bus. Custom endpoints carry
-+ additional policy which can be used to create sandboxes with
-+ locked-down, limited, filtered access to a bus. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Connection</title>
-+ <para>
-+ A connection to a bus is created by opening an endpoint file of a
-+ bus. Every ordinary client connection has a unique identifier on the
-+ bus and can address messages to every other connection on the same
-+ bus by using the peer's connection ID as the destination. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Pool</title>
-+ <para>
-+ Each connection allocates a piece of shmem-backed memory that is
-+ used to receive messages and answers to ioctl commands from the kernel.
-+ It is never used to send anything to the kernel. In order to access that
-+ memory, an application must mmap() it into its address space. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Well-known Name</title>
-+ <para>
-+ A connection can, in addition to its implicit unique connection ID,
-+ request the ownership of a textual well-known name. Well-known names are
-+ noted in reverse-domain notation, such as com.example.service1. A
-+ connection that offers a service on a bus is usually reached by its
-+ well-known name. An analogy of connection ID and well-known name is an
-+ IP address and a DNS name associated with that address. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Message</title>
-+ <para>
-+ Connections can exchange messages with other connections by addressing
-+ the peers with their connection ID or well-known name. A message
-+ consists of a message header with information on how to route the
-+ message, and the message payload, which is a logical byte stream of
-+ arbitrary size. Messages can carry additional file descriptors to be
-+ passed from one connection to another, just like passing file
-+ descriptors over UNIX domain sockets. Every connection can specify which
-+ set of metadata the kernel should attach to the message when it is
-+ delivered to the receiving connection. Metadata contains information
-+ like: system time stamps, UID, GID, TID, proc-starttime, well-known
-+ names, process comm, process exe, process argv, cgroup, capabilities,
-+ seclabel, audit session, loginuid and the connection's human-readable
-+ name. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Item</title>
-+ <para>
-+ The API of kdbus implements the notion of items, submitted through and
-+ returned by most ioctls, and stored inside data structures in the
-+ connection's pool. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Broadcast, signal, filter, match</title>
-+ <para>
-+ Signals are messages that a receiver opts in for by installing a blob of
-+ bytes, called a 'match'. Signal messages must always carry a
-+ counter-part blob, called a 'filter', and signals are only delivered to
-+ peers which have a match that white-lists the message's filter. Senders
-+ of signal messages can use either a single connection ID as receiver,
-+ or the special connection ID
-+ <constant>KDBUS_DST_ID_BROADCAST</constant> to potentially send it to
-+ all connections of a bus, following the logic described above. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ and
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Policy</title>
-+ <para>
-+ A policy is a set of rules that define which connections can see, talk
-+ to, or register a well-known name on the bus. A policy is attached to
-+ buses and custom endpoints, and modified by policy holder connections or
-+ owners of custom endpoints. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.policy</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Privileged bus users</title>
-+ <para>
-+ A user connecting to the bus is considered privileged if it is either
-+ the creator of the bus, or if it has the CAP_IPC_OWNER capability flag
-+ set. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Bus Layout</title>
-+
-+ <para>
-+ A <emphasis>bus</emphasis> provides and defines an environment that peers
-+ can connect to for message interchange. A bus is created via the kdbus
-+ control interface and can be modified by the bus creator. It applies the
-+ policy that control all bus operations. The bus creator itself does not
-+ participate as a peer. To establish a peer
-+ <emphasis>connection</emphasis>, you have to open one of the
-+ <emphasis>endpoints</emphasis> of a bus. Each bus provides a default
-+ endpoint, but further endpoints can be created on-demand. Endpoints are
-+ used to apply additional policies for all connections on this endpoint.
-+ Thus, they provide additional filters to further restrict access of
-+ specific connections to the bus.
-+ </para>
-+
-+ <para>
-+ Following, you can see an example bus layout:
-+ </para>
-+
-+ <programlisting><![CDATA[
-+ Bus Creator
-+ |
-+ |
-+ +-----+
-+ | Bus |
-+ +-----+
-+ |
-+ __________________/ \__________________
-+ / \
-+ | |
-+ +----------+ +----------+
-+ | Endpoint | | Endpoint |
-+ +----------+ +----------+
-+ _________/|\_________ _________/|\_________
-+ / | \ / | \
-+ | | | | | |
-+ | | | | | |
-+ Connection Connection Connection Connection Connection Connection
-+ ]]></programlisting>
-+
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Data structures and interconnections</title>
-+ <programlisting><![CDATA[
-+ +--------------------------------------------------------------------------+
-+ | Domain (Mount Point) |
-+ | /sys/fs/kdbus/control |
-+ | +----------------------------------------------------------------------+ |
-+ | | Bus (System Bus) | |
-+ | | /sys/fs/kdbus/0-system/ | |
-+ | | +-------------------------------+ +--------------------------------+ | |
-+ | | | Endpoint | | Endpoint | | |
-+ | | | /sys/fs/kdbus/0-system/bus | | /sys/fs/kdbus/0-system/ep.app | | |
-+ | | +-------------------------------+ +--------------------------------+ | |
-+ | | +--------------+ +--------------+ +--------------+ +---------------+ | |
-+ | | | Connection | | Connection | | Connection | | Connection | | |
-+ | | | :1.22 | | :1.25 | | :1.55 | | :1.81 | | |
-+ | | +--------------+ +--------------+ +--------------+ +---------------+ | |
-+ | +----------------------------------------------------------------------+ |
-+ | |
-+ | +----------------------------------------------------------------------+ |
-+ | | Bus (User Bus for UID 2702) | |
-+ | | /sys/fs/kdbus/2702-user/ | |
-+ | | +-------------------------------+ +--------------------------------+ | |
-+ | | | Endpoint | | Endpoint | | |
-+ | | | /sys/fs/kdbus/2702-user/bus | | /sys/fs/kdbus/2702-user/ep.app | | |
-+ | | +-------------------------------+ +--------------------------------+ | |
-+ | | +--------------+ +--------------+ +--------------+ +---------------+ | |
-+ | | | Connection | | Connection | | Connection | | Connection | | |
-+ | | | :1.22 | | :1.25 | | :1.55 | | :1.81 | | |
-+ | | +--------------+ +--------------+ +--------------------------------+ | |
-+ | +----------------------------------------------------------------------+ |
-+ +--------------------------------------------------------------------------+
-+ ]]></programlisting>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>Metadata</title>
-+
-+ <refsect2>
-+ <title>When metadata is collected</title>
-+ <para>
-+ kdbus records data about the system in certain situations. Such metadata
-+ can refer to the currently active process (creds, PIDs, current user
-+ groups, process names and its executable path, cgroup membership,
-+ capabilities, security label and audit information), connection
-+ information (description string, currently owned names) and time stamps.
-+ </para>
-+ <para>
-+ Metadata is collected at the following times.
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem><para>
-+ When a bus is created (<constant>KDBUS_CMD_MAKE</constant>),
-+ information about the calling task is collected. This data is returned
-+ by the kernel via the <constant>KDBUS_CMD_BUS_CREATOR_INFO</constant>
-+ call.
-+ </para></listitem>
-+
-+ <listitem>
-+ <para>
-+ When a connection is created (<constant>KDBUS_CMD_HELLO</constant>),
-+ information about the calling task is collected. Alternatively, a
-+ privileged connection may provide 'faked' information about
-+ credentials, PIDs and security labels which will be stored instead.
-+ This data is returned by the kernel as information on a connection
-+ (<constant>KDBUS_CMD_CONN_INFO</constant>). Only metadata that a
-+ connection allowed to be sent (by setting its bit in
-+ <varname>attach_flags_send</varname>) will be exported in this way.
-+ </para>
-+ </listitem>
-+
-+ <listitem>
-+ <para>
-+ When a message is sent (<constant>KDBUS_CMD_SEND</constant>),
-+ information about the sending task and the sending connection is
-+ collected. This metadata will be attached to the message when it
-+ arrives in the receiver's pool. If the connection sending the
-+ message installed faked credentials (see
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>),
-+ the message will not be augmented by any information about the
-+ currently sending task. Note that only metadata that was requested
-+ by the receiving connection will be collected and attached to
-+ messages.
-+ </para>
-+ </listitem>
-+ </itemizedlist>
-+
-+ <para>
-+ Which metadata items are actually delivered depends on the following
-+ sets and masks:
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem><para>
-+ (a) the system-wide kmod creds mask
-+ (module parameter <varname>attach_flags_mask</varname>)
-+ </para></listitem>
-+
-+ <listitem><para>
-+ (b) the per-connection send creds mask, set by the connecting client
-+ </para></listitem>
-+
-+ <listitem><para>
-+ (c) the per-connection receive creds mask, set by the connecting
-+ client
-+ </para></listitem>
-+
-+ <listitem><para>
-+ (d) the per-bus minimal creds mask, set by the bus creator
-+ </para></listitem>
-+
-+ <listitem><para>
-+ (e) the per-bus owner creds mask, set by the bus creator
-+ </para></listitem>
-+
-+ <listitem><para>
-+ (f) the mask specified when querying creds of a bus peer
-+ </para></listitem>
-+
-+ <listitem><para>
-+ (g) the mask specified when querying creds of a bus owner
-+ </para></listitem>
-+ </itemizedlist>
-+
-+ <para>
-+ With the following rules:
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem>
-+ <para>
-+ [1] The creds attached to messages are determined as
-+ <constant>a & b & c</constant>.
-+ </para>
-+ </listitem>
-+
-+ <listitem>
-+ <para>
-+ [2] When connecting to a bus (<constant>KDBUS_CMD_HELLO</constant>),
-+ and <constant>~b & d != 0</constant>, the call will fail with,
-+ <errorcode>-1</errorcode>, and <varname>errno</varname> is set to
-+ <constant>ECONNREFUSED</constant>.
-+ </para>
-+ </listitem>
-+
-+ <listitem>
-+ <para>
-+ [3] When querying creds of a bus peer, the creds returned are
-+ <constant>a & b & f</constant>.
-+ </para>
-+ </listitem>
-+
-+ <listitem>
-+ <para>
-+ [4] When querying creds of a bus owner, the creds returned are
-+ <constant>a & e & g</constant>.
-+ </para>
-+ </listitem>
-+ </itemizedlist>
-+
-+ <para>
-+ Hence, programs might not always get all requested metadata items that
-+ it requested. Code must be written so that it can cope with this fact.
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Benefits and heads-up</title>
-+ <para>
-+ Attaching metadata to messages has two major benefits.
-+
-+ <itemizedlist>
-+ <listitem>
-+ <para>
-+ Metadata attached to messages is gathered at the moment when the
-+ other side calls <constant>KDBUS_CMD_SEND</constant>, or,
-+ respectively, then the kernel notification is generated. There is
-+ no need for the receiving peer to retrieve information about the
-+ task in a second step. This closes a race gap that would otherwise
-+ be inherent.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ As metadata is delivered along with messages in the same data
-+ blob, no extra calls to kernel functions etc. are needed to gather
-+ them.
-+ </para>
-+ </listitem>
-+ </itemizedlist>
-+
-+ Note, however, that collecting metadata does come at a price for
-+ performance, so developers should carefully assess which metadata to
-+ really opt-in for. For best practice, data that is not needed as part
-+ of a message should not be requested by the connection in the first
-+ place (see <varname>attach_flags_recv</varname> in
-+ <constant>KDBUS_CMD_HELLO</constant>).
-+ </para>
-+ </refsect2>
-+
-+ <refsect2>
-+ <title>Attach flags for metadata items</title>
-+ <para>
-+ To let the kernel know which metadata information to attach as items
-+ to the aforementioned commands, it uses a bitmask. In those, the
-+ following <emphasis>attach flags</emphasis> are currently supported.
-+ Both the <varname>attach_flags_recv</varname> and
-+ <varname>attach_flags_send</varname> fields of
-+ <type>struct kdbus_cmd_hello</type>, as well as the payload of the
-+ <constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant> and
-+ <constant>KDBUS_ITEM_ATTACH_FLAGS_RECV</constant> items follow this
-+ scheme.
-+ </para>
-+
-+ <variablelist>
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_TIMESTAMP</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_TIMESTAMP</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_CREDS</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_CREDS</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_PIDS</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_PIDS</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_AUXGROUPS</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_AUXGROUPS</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_NAMES</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_OWNED_NAME</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_TID_COMM</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_TID_COMM</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_PID_COMM</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_PID_COMM</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_EXE</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_EXE</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_CMDLINE</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_CMDLINE</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_CGROUP</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_CGROUP</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_CAPS</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_CAPS</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_SECLABEL</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_SECLABEL</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_AUDIT</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_AUDIT</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
-+ <term><constant>KDBUS_ATTACH_CONN_DESCRIPTION</constant></term>
-+ <listitem><para>
-+ Requests the attachment of an item of type
-+ <constant>KDBUS_ITEM_CONN_DESCRIPTION</constant>.
-+ </para></listitem>
-+ </varlistentry>
-+ </variablelist>
-+
-+ <para>
-+ Please refer to
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for detailed information about the layout and payload of items and
-+ what metadata should be used to.
-+ </para>
-+ </refsect2>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>The ioctl interface</title>
-+
-+ <para>
-+ As stated in the 'synopsis' section above, application developers are
-+ strongly encouraged to use kdbus through one of the high-level D-Bus
-+ abstraction libraries, rather than using the low-level API directly.
-+ </para>
-+
-+ <para>
-+ kdbus on the kernel level exposes its functions exclusively through
-+ <citerefentry>
-+ <refentrytitle>ioctl</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>,
-+ employed on file descriptors returned by
-+ <citerefentry>
-+ <refentrytitle>open</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ on pseudo files exposed by
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para>
-+ <para>
-+ Following is a list of all the ioctls, along with the command structs
-+ they must be used with.
-+ </para>
-+
-+ <informaltable frame="none">
-+ <tgroup cols="3" colsep="1">
-+ <thead>
-+ <row>
-+ <entry>ioctl signature</entry>
-+ <entry>command</entry>
-+ <entry>transported struct</entry>
-+ </row>
-+ </thead>
-+ <tbody>
-+ <row>
-+ <entry><constant>0x40189500</constant></entry>
-+ <entry><constant>KDBUS_CMD_BUS_MAKE</constant></entry>
-+ <entry><type>struct kdbus_cmd *</type></entry>
-+ </row><row>
-+ <entry><constant>0x40189510</constant></entry>
-+ <entry><constant>KDBUS_CMD_ENDPOINT_MAKE</constant></entry>
-+ <entry><type>struct kdbus_cmd *</type></entry>
-+ </row><row>
-+ <entry><constant>0xc0609580</constant></entry>
-+ <entry><constant>KDBUS_CMD_HELLO</constant></entry>
-+ <entry><type>struct kdbus_cmd_hello *</type></entry>
-+ </row><row>
-+ <entry><constant>0x40189582</constant></entry>
-+ <entry><constant>KDBUS_CMD_BYEBYE</constant></entry>
-+ <entry><type>struct kdbus_cmd *</type></entry>
-+ </row><row>
-+ <entry><constant>0x40389590</constant></entry>
-+ <entry><constant>KDBUS_CMD_SEND</constant></entry>
-+ <entry><type>struct kdbus_cmd_send *</type></entry>
-+ </row><row>
-+ <entry><constant>0x80409591</constant></entry>
-+ <entry><constant>KDBUS_CMD_RECV</constant></entry>
-+ <entry><type>struct kdbus_cmd_recv *</type></entry>
-+ </row><row>
-+ <entry><constant>0x40209583</constant></entry>
-+ <entry><constant>KDBUS_CMD_FREE</constant></entry>
-+ <entry><type>struct kdbus_cmd_free *</type></entry>
-+ </row><row>
-+ <entry><constant>0x401895a0</constant></entry>
-+ <entry><constant>KDBUS_CMD_NAME_ACQUIRE</constant></entry>
-+ <entry><type>struct kdbus_cmd *</type></entry>
-+ </row><row>
-+ <entry><constant>0x401895a1</constant></entry>
-+ <entry><constant>KDBUS_CMD_NAME_RELEASE</constant></entry>
-+ <entry><type>struct kdbus_cmd *</type></entry>
-+ </row><row>
-+ <entry><constant>0x80289586</constant></entry>
-+ <entry><constant>KDBUS_CMD_LIST</constant></entry>
-+ <entry><type>struct kdbus_cmd_list *</type></entry>
-+ </row><row>
-+ <entry><constant>0x80309584</constant></entry>
-+ <entry><constant>KDBUS_CMD_CONN_INFO</constant></entry>
-+ <entry><type>struct kdbus_cmd_info *</type></entry>
-+ </row><row>
-+ <entry><constant>0x40209551</constant></entry>
-+ <entry><constant>KDBUS_CMD_UPDATE</constant></entry>
-+ <entry><type>struct kdbus_cmd *</type></entry>
-+ </row><row>
-+ <entry><constant>0x80309585</constant></entry>
-+ <entry><constant>KDBUS_CMD_BUS_CREATOR_INFO</constant></entry>
-+ <entry><type>struct kdbus_cmd_info *</type></entry>
-+ </row><row>
-+ <entry><constant>0x40189511</constant></entry>
-+ <entry><constant>KDBUS_CMD_ENDPOINT_UPDATE</constant></entry>
-+ <entry><type>struct kdbus_cmd *</type></entry>
-+ </row><row>
-+ <entry><constant>0x402095b0</constant></entry>
-+ <entry><constant>KDBUS_CMD_MATCH_ADD</constant></entry>
-+ <entry><type>struct kdbus_cmd_match *</type></entry>
-+ </row><row>
-+ <entry><constant>0x402095b1</constant></entry>
-+ <entry><constant>KDBUS_CMD_MATCH_REMOVE</constant></entry>
-+ <entry><type>struct kdbus_cmd_match *</type></entry>
-+ </row>
-+ </tbody>
-+ </tgroup>
-+ </informaltable>
-+
-+ <para>
-+ Depending on the type of <emphasis>kdbusfs</emphasis> node that was
-+ opened and what ioctls have been executed on a file descriptor before,
-+ a different sub-set of ioctl commands is allowed.
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem>
-+ <para>
-+ On a file descriptor resulting from opening a
-+ <emphasis>control node</emphasis>, only the
-+ <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl may be executed.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ On a file descriptor resulting from opening a
-+ <emphasis>bus endpoint node</emphasis>, only the
-+ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> and
-+ <constant>KDBUS_CMD_HELLO</constant> ioctls may be executed.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ A file descriptor that was used to create a bus
-+ (via <constant>KDBUS_CMD_BUS_MAKE</constant>) is called a
-+ <emphasis>bus owner</emphasis> file descriptor. The bus will be
-+ active as long as the file descriptor is kept open.
-+ A bus owner file descriptor can not be used to
-+ employ any further ioctls. As soon as
-+ <citerefentry>
-+ <refentrytitle>close</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ is called on it, the bus will be shut down, along will all associated
-+ endpoints and connections. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ A file descriptor that was used to create an endpoint
-+ (via <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>) is called an
-+ <emphasis>endpoint owner</emphasis> file descriptor. The endpoint
-+ will be active as long as the file descriptor is kept open.
-+ An endpoint owner file descriptor can only be used
-+ to update details of an endpoint through the
-+ <constant>KDBUS_CMD_ENDPOINT_UPDATE</constant> ioctl. As soon as
-+ <citerefentry>
-+ <refentrytitle>close</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ is called on it, the endpoint will be removed from the bus, and all
-+ connections that are connected to the bus through it are shut down.
-+ See
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ for more details.
-+ </para>
-+ </listitem>
-+ <listitem>
-+ <para>
-+ A file descriptor that was used to create a connection
-+ (via <constant>KDBUS_CMD_HELLO</constant>) is called a
-+ <emphasis>connection owner</emphasis> file descriptor. The connection
-+ will be active as long as the file descriptor is kept open.
-+ A connection owner file descriptor may be used to
-+ issue any of the following ioctls.
-+ </para>
-+
-+ <itemizedlist>
-+ <listitem><para>
-+ <constant>KDBUS_CMD_UPDATE</constant> to tweak details of the
-+ connection. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ <constant>KDBUS_CMD_BYEBYE</constant> to shut down a connection
-+ without losing messages. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ <constant>KDBUS_CMD_FREE</constant> to free a slice of memory in
-+ the pool. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ <constant>KDBUS_CMD_CONN_INFO</constant> to retrieve information
-+ on other connections on the bus. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ <constant>KDBUS_CMD_BUS_CREATOR_INFO</constant> to retrieve
-+ information on the bus creator. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ <constant>KDBUS_CMD_LIST</constant> to retrieve a list of
-+ currently active well-known names and unique IDs on the bus. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ <constant>KDBUS_CMD_SEND</constant> and
-+ <constant>KDBUS_CMD_RECV</constant> to send or receive a message.
-+ See
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ <constant>KDBUS_CMD_NAME_ACQUIRE</constant> and
-+ <constant>KDBUS_CMD_NAME_RELEASE</constant> to acquire or release
-+ a well-known name on the bus. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+
-+ <listitem><para>
-+ <constant>KDBUS_CMD_MATCH_ADD</constant> and
-+ <constant>KDBUS_CMD_MATCH_REMOVE</constant> to add or remove
-+ a match for signal messages. See
-+ <citerefentry>
-+ <refentrytitle>kdbus.match</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>.
-+ </para></listitem>
-+ </itemizedlist>
-+ </listitem>
-+ </itemizedlist>
-+
-+ <para>
-+ These ioctls, along with the structs they transport, are explained in
-+ detail in the other documents linked to in the "See Also" section below.
-+ </para>
-+ </refsect1>
-+
-+ <refsect1>
-+ <title>See Also</title>
-+ <simplelist type="inline">
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.bus</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.connection</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.endpoint</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.fs</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.item</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.message</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.name</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>kdbus.pool</refentrytitle>
-+ <manvolnum>7</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>ioctl</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>mmap</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>open</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <citerefentry>
-+ <refentrytitle>close</refentrytitle>
-+ <manvolnum>2</manvolnum>
-+ </citerefentry>
-+ </member>
-+ <member>
-+ <ulink url="http://freedesktop.org/wiki/Software/dbus">D-Bus</ulink>
-+ </member>
-+ </simplelist>
-+ </refsect1>
-+
-+</refentry>
-diff --git a/Documentation/kdbus/stylesheet.xsl b/Documentation/kdbus/stylesheet.xsl
-new file mode 100644
-index 0000000..52565ea
---- /dev/null
-+++ b/Documentation/kdbus/stylesheet.xsl
-@@ -0,0 +1,16 @@
-+<?xml version="1.0" encoding="UTF-8"?>
-+<stylesheet xmlns="http://www.w3.org/1999/XSL/Transform" version="1.0">
-+ <param name="chunk.quietly">1</param>
-+ <param name="funcsynopsis.style">ansi</param>
-+ <param name="funcsynopsis.tabular.threshold">80</param>
-+ <param name="callout.graphics">0</param>
-+ <param name="paper.type">A4</param>
-+ <param name="generate.section.toc.level">2</param>
-+ <param name="use.id.as.filename">1</param>
-+ <param name="citerefentry.link">1</param>
-+ <strip-space elements="*"/>
-+ <template name="generate.citerefentry.link">
-+ <value-of select="refentrytitle"/>
-+ <text>.html</text>
-+ </template>
-+</stylesheet>
-diff --git a/MAINTAINERS b/MAINTAINERS
-index d8afd29..02f7668 100644
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -5585,6 +5585,19 @@ S: Maintained
- F: Documentation/kbuild/kconfig-language.txt
- F: scripts/kconfig/
-
-+KDBUS
-+M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+M: Daniel Mack <daniel@zonque.org>
-+M: David Herrmann <dh.herrmann@googlemail.com>
-+M: Djalal Harouni <tixxdz@opendz.org>
-+L: linux-kernel@vger.kernel.org
-+S: Maintained
-+F: ipc/kdbus/*
-+F: samples/kdbus/*
-+F: Documentation/kdbus/*
-+F: include/uapi/linux/kdbus.h
-+F: tools/testing/selftests/kdbus/
-+
- KDUMP
- M: Vivek Goyal <vgoyal@redhat.com>
- M: Haren Myneni <hbabu@us.ibm.com>
-diff --git a/Makefile b/Makefile
-index f5c8983..a1c8d57 100644
---- a/Makefile
-+++ b/Makefile
-@@ -1343,6 +1343,7 @@ $(help-board-dirs): help-%:
- %docs: scripts_basic FORCE
- $(Q)$(MAKE) $(build)=scripts build_docproc
- $(Q)$(MAKE) $(build)=Documentation/DocBook $@
-+ $(Q)$(MAKE) $(build)=Documentation/kdbus $@
-
- else # KBUILD_EXTMOD
-
-diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
-index 1a0006a..4842a98 100644
---- a/include/uapi/linux/Kbuild
-+++ b/include/uapi/linux/Kbuild
-@@ -215,6 +215,7 @@ header-y += ixjuser.h
- header-y += jffs2.h
- header-y += joystick.h
- header-y += kcmp.h
-+header-y += kdbus.h
- header-y += kdev_t.h
- header-y += kd.h
- header-y += kernelcapi.h
-diff --git a/include/uapi/linux/kdbus.h b/include/uapi/linux/kdbus.h
-new file mode 100644
-index 0000000..4fc44cb
---- /dev/null
-+++ b/include/uapi/linux/kdbus.h
-@@ -0,0 +1,984 @@
-+/*
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef _UAPI_KDBUS_H_
-+#define _UAPI_KDBUS_H_
-+
-+#include <linux/ioctl.h>
-+#include <linux/types.h>
-+
-+#define KDBUS_IOCTL_MAGIC 0x95
-+#define KDBUS_SRC_ID_KERNEL (0)
-+#define KDBUS_DST_ID_NAME (0)
-+#define KDBUS_MATCH_ID_ANY (~0ULL)
-+#define KDBUS_DST_ID_BROADCAST (~0ULL)
-+#define KDBUS_FLAG_NEGOTIATE (1ULL << 63)
-+
-+/**
-+ * struct kdbus_notify_id_change - name registry change message
-+ * @id: New or former owner of the name
-+ * @flags: flags field from KDBUS_HELLO_*
-+ *
-+ * Sent from kernel to userspace when the owner or activator of
-+ * a well-known name changes.
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_ID_ADD
-+ * KDBUS_ITEM_ID_REMOVE
-+ */
-+struct kdbus_notify_id_change {
-+ __u64 id;
-+ __u64 flags;
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_notify_name_change - name registry change message
-+ * @old_id: ID and flags of former owner of a name
-+ * @new_id: ID and flags of new owner of a name
-+ * @name: Well-known name
-+ *
-+ * Sent from kernel to userspace when the owner or activator of
-+ * a well-known name changes.
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_NAME_ADD
-+ * KDBUS_ITEM_NAME_REMOVE
-+ * KDBUS_ITEM_NAME_CHANGE
-+ */
-+struct kdbus_notify_name_change {
-+ struct kdbus_notify_id_change old_id;
-+ struct kdbus_notify_id_change new_id;
-+ char name[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_creds - process credentials
-+ * @uid: User ID
-+ * @euid: Effective UID
-+ * @suid: Saved UID
-+ * @fsuid: Filesystem UID
-+ * @gid: Group ID
-+ * @egid: Effective GID
-+ * @sgid: Saved GID
-+ * @fsgid: Filesystem GID
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_CREDS
-+ */
-+struct kdbus_creds {
-+ __u64 uid;
-+ __u64 euid;
-+ __u64 suid;
-+ __u64 fsuid;
-+ __u64 gid;
-+ __u64 egid;
-+ __u64 sgid;
-+ __u64 fsgid;
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_pids - process identifiers
-+ * @pid: Process ID
-+ * @tid: Thread ID
-+ * @ppid: Parent process ID
-+ *
-+ * The PID and TID of a process.
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_PIDS
-+ */
-+struct kdbus_pids {
-+ __u64 pid;
-+ __u64 tid;
-+ __u64 ppid;
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_caps - process capabilities
-+ * @last_cap: Highest currently known capability bit
-+ * @caps: Variable number of 32-bit capabilities flags
-+ *
-+ * Contains a variable number of 32-bit capabilities flags.
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_CAPS
-+ */
-+struct kdbus_caps {
-+ __u32 last_cap;
-+ __u32 caps[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_audit - audit information
-+ * @sessionid: The audit session ID
-+ * @loginuid: The audit login uid
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_AUDIT
-+ */
-+struct kdbus_audit {
-+ __u32 sessionid;
-+ __u32 loginuid;
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_timestamp
-+ * @seqnum: Global per-domain message sequence number
-+ * @monotonic_ns: Monotonic timestamp, in nanoseconds
-+ * @realtime_ns: Realtime timestamp, in nanoseconds
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_TIMESTAMP
-+ */
-+struct kdbus_timestamp {
-+ __u64 seqnum;
-+ __u64 monotonic_ns;
-+ __u64 realtime_ns;
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_vec - I/O vector for kdbus payload items
-+ * @size: The size of the vector
-+ * @address: Memory address of data buffer
-+ * @offset: Offset in the in-message payload memory,
-+ * relative to the message head
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_PAYLOAD_VEC, KDBUS_ITEM_PAYLOAD_OFF
-+ */
-+struct kdbus_vec {
-+ __u64 size;
-+ union {
-+ __u64 address;
-+ __u64 offset;
-+ };
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_bloom_parameter - bus-wide bloom parameters
-+ * @size: Size of the bit field in bytes (m / 8)
-+ * @n_hash: Number of hash functions used (k)
-+ */
-+struct kdbus_bloom_parameter {
-+ __u64 size;
-+ __u64 n_hash;
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_bloom_filter - bloom filter containing n elements
-+ * @generation: Generation of the element set in the filter
-+ * @data: Bit field, multiple of 8 bytes
-+ */
-+struct kdbus_bloom_filter {
-+ __u64 generation;
-+ __u64 data[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_memfd - a kdbus memfd
-+ * @start: The offset into the memfd where the segment starts
-+ * @size: The size of the memfd segment
-+ * @fd: The file descriptor number
-+ * @__pad: Padding to ensure proper alignment and size
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_PAYLOAD_MEMFD
-+ */
-+struct kdbus_memfd {
-+ __u64 start;
-+ __u64 size;
-+ int fd;
-+ __u32 __pad;
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_name - a registered well-known name with its flags
-+ * @flags: Flags from KDBUS_NAME_*
-+ * @name: Well-known name
-+ *
-+ * Attached to:
-+ * KDBUS_ITEM_OWNED_NAME
-+ */
-+struct kdbus_name {
-+ __u64 flags;
-+ char name[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_policy_access_type - permissions of a policy record
-+ * @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
-+ * @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
-+ * @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid
-+ * @KDBUS_POLICY_ACCESS_WORLD: World-accessible
-+ */
-+enum kdbus_policy_access_type {
-+ _KDBUS_POLICY_ACCESS_NULL,
-+ KDBUS_POLICY_ACCESS_USER,
-+ KDBUS_POLICY_ACCESS_GROUP,
-+ KDBUS_POLICY_ACCESS_WORLD,
-+};
-+
-+/**
-+ * enum kdbus_policy_access_flags - mode flags
-+ * @KDBUS_POLICY_OWN: Allow to own a well-known name
-+ * Implies KDBUS_POLICY_TALK and KDBUS_POLICY_SEE
-+ * @KDBUS_POLICY_TALK: Allow communication to a well-known name
-+ * Implies KDBUS_POLICY_SEE
-+ * @KDBUS_POLICY_SEE: Allow to see a well-known name
-+ */
-+enum kdbus_policy_type {
-+ KDBUS_POLICY_SEE = 0,
-+ KDBUS_POLICY_TALK,
-+ KDBUS_POLICY_OWN,
-+};
-+
-+/**
-+ * struct kdbus_policy_access - policy access item
-+ * @type: One of KDBUS_POLICY_ACCESS_* types
-+ * @access: Access to grant
-+ * @id: For KDBUS_POLICY_ACCESS_USER, the uid
-+ * For KDBUS_POLICY_ACCESS_GROUP, the gid
-+ */
-+struct kdbus_policy_access {
-+ __u64 type; /* USER, GROUP, WORLD */
-+ __u64 access; /* OWN, TALK, SEE */
-+ __u64 id; /* uid, gid, 0 */
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_attach_flags - flags for metadata attachments
-+ * @KDBUS_ATTACH_TIMESTAMP: Timestamp
-+ * @KDBUS_ATTACH_CREDS: Credentials
-+ * @KDBUS_ATTACH_PIDS: PIDs
-+ * @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups
-+ * @KDBUS_ATTACH_NAMES: Well-known names
-+ * @KDBUS_ATTACH_TID_COMM: The "comm" process identifier of the TID
-+ * @KDBUS_ATTACH_PID_COMM: The "comm" process identifier of the PID
-+ * @KDBUS_ATTACH_EXE: The path of the executable
-+ * @KDBUS_ATTACH_CMDLINE: The process command line
-+ * @KDBUS_ATTACH_CGROUP: The croup membership
-+ * @KDBUS_ATTACH_CAPS: The process capabilities
-+ * @KDBUS_ATTACH_SECLABEL: The security label
-+ * @KDBUS_ATTACH_AUDIT: The audit IDs
-+ * @KDBUS_ATTACH_CONN_DESCRIPTION: The human-readable connection name
-+ * @_KDBUS_ATTACH_ALL: All of the above
-+ * @_KDBUS_ATTACH_ANY: Wildcard match to enable any kind of
-+ * metatdata.
-+ */
-+enum kdbus_attach_flags {
-+ KDBUS_ATTACH_TIMESTAMP = 1ULL << 0,
-+ KDBUS_ATTACH_CREDS = 1ULL << 1,
-+ KDBUS_ATTACH_PIDS = 1ULL << 2,
-+ KDBUS_ATTACH_AUXGROUPS = 1ULL << 3,
-+ KDBUS_ATTACH_NAMES = 1ULL << 4,
-+ KDBUS_ATTACH_TID_COMM = 1ULL << 5,
-+ KDBUS_ATTACH_PID_COMM = 1ULL << 6,
-+ KDBUS_ATTACH_EXE = 1ULL << 7,
-+ KDBUS_ATTACH_CMDLINE = 1ULL << 8,
-+ KDBUS_ATTACH_CGROUP = 1ULL << 9,
-+ KDBUS_ATTACH_CAPS = 1ULL << 10,
-+ KDBUS_ATTACH_SECLABEL = 1ULL << 11,
-+ KDBUS_ATTACH_AUDIT = 1ULL << 12,
-+ KDBUS_ATTACH_CONN_DESCRIPTION = 1ULL << 13,
-+ _KDBUS_ATTACH_ALL = (1ULL << 14) - 1,
-+ _KDBUS_ATTACH_ANY = ~0ULL
-+};
-+
-+/**
-+ * enum kdbus_item_type - item types to chain data in a list
-+ * @_KDBUS_ITEM_NULL: Uninitialized/invalid
-+ * @_KDBUS_ITEM_USER_BASE: Start of user items
-+ * @KDBUS_ITEM_NEGOTIATE: Negotiate supported items
-+ * @KDBUS_ITEM_PAYLOAD_VEC: Vector to data
-+ * @KDBUS_ITEM_PAYLOAD_OFF: Data at returned offset to message head
-+ * @KDBUS_ITEM_PAYLOAD_MEMFD: Data as sealed memfd
-+ * @KDBUS_ITEM_FDS: Attached file descriptors
-+ * @KDBUS_ITEM_CANCEL_FD: FD used to cancel a synchronous
-+ * operation by writing to it from
-+ * userspace
-+ * @KDBUS_ITEM_BLOOM_PARAMETER: Bus-wide bloom parameters, used with
-+ * KDBUS_CMD_BUS_MAKE, carries a
-+ * struct kdbus_bloom_parameter
-+ * @KDBUS_ITEM_BLOOM_FILTER: Bloom filter carried with a message,
-+ * used to match against a bloom mask of a
-+ * connection, carries a struct
-+ * kdbus_bloom_filter
-+ * @KDBUS_ITEM_BLOOM_MASK: Bloom mask used to match against a
-+ * message'sbloom filter
-+ * @KDBUS_ITEM_DST_NAME: Destination's well-known name
-+ * @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint
-+ * @KDBUS_ITEM_ATTACH_FLAGS_SEND: Attach-flags, used for updating which
-+ * metadata a connection opts in to send
-+ * @KDBUS_ITEM_ATTACH_FLAGS_RECV: Attach-flags, used for updating which
-+ * metadata a connection requests to
-+ * receive for each reeceived message
-+ * @KDBUS_ITEM_ID: Connection ID
-+ * @KDBUS_ITEM_NAME: Well-know name with flags
-+ * @_KDBUS_ITEM_ATTACH_BASE: Start of metadata attach items
-+ * @KDBUS_ITEM_TIMESTAMP: Timestamp
-+ * @KDBUS_ITEM_CREDS: Process credentials
-+ * @KDBUS_ITEM_PIDS: Process identifiers
-+ * @KDBUS_ITEM_AUXGROUPS: Auxiliary process groups
-+ * @KDBUS_ITEM_OWNED_NAME: A name owned by the associated
-+ * connection
-+ * @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier
-+ * (Don't trust this, see below.)
-+ * @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier
-+ * (Don't trust this, see below.)
-+ * @KDBUS_ITEM_EXE: The path of the executable
-+ * (Don't trust this, see below.)
-+ * @KDBUS_ITEM_CMDLINE: The process command line
-+ * (Don't trust this, see below.)
-+ * @KDBUS_ITEM_CGROUP: The croup membership
-+ * @KDBUS_ITEM_CAPS: The process capabilities
-+ * @KDBUS_ITEM_SECLABEL: The security label
-+ * @KDBUS_ITEM_AUDIT: The audit IDs
-+ * @KDBUS_ITEM_CONN_DESCRIPTION: The connection's human-readable name
-+ * (debugging)
-+ * @_KDBUS_ITEM_POLICY_BASE: Start of policy items
-+ * @KDBUS_ITEM_POLICY_ACCESS: Policy access block
-+ * @_KDBUS_ITEM_KERNEL_BASE: Start of kernel-generated message items
-+ * @KDBUS_ITEM_NAME_ADD: Notification in kdbus_notify_name_change
-+ * @KDBUS_ITEM_NAME_REMOVE: Notification in kdbus_notify_name_change
-+ * @KDBUS_ITEM_NAME_CHANGE: Notification in kdbus_notify_name_change
-+ * @KDBUS_ITEM_ID_ADD: Notification in kdbus_notify_id_change
-+ * @KDBUS_ITEM_ID_REMOVE: Notification in kdbus_notify_id_change
-+ * @KDBUS_ITEM_REPLY_TIMEOUT: Timeout has been reached
-+ * @KDBUS_ITEM_REPLY_DEAD: Destination died
-+ *
-+ * N.B: The process and thread COMM fields, as well as the CMDLINE and
-+ * EXE fields may be altered by unprivileged processes und should
-+ * hence *not* used for security decisions. Peers should make use of
-+ * these items only for informational purposes, such as generating log
-+ * records.
-+ */
-+enum kdbus_item_type {
-+ _KDBUS_ITEM_NULL,
-+ _KDBUS_ITEM_USER_BASE,
-+ KDBUS_ITEM_NEGOTIATE = _KDBUS_ITEM_USER_BASE,
-+ KDBUS_ITEM_PAYLOAD_VEC,
-+ KDBUS_ITEM_PAYLOAD_OFF,
-+ KDBUS_ITEM_PAYLOAD_MEMFD,
-+ KDBUS_ITEM_FDS,
-+ KDBUS_ITEM_CANCEL_FD,
-+ KDBUS_ITEM_BLOOM_PARAMETER,
-+ KDBUS_ITEM_BLOOM_FILTER,
-+ KDBUS_ITEM_BLOOM_MASK,
-+ KDBUS_ITEM_DST_NAME,
-+ KDBUS_ITEM_MAKE_NAME,
-+ KDBUS_ITEM_ATTACH_FLAGS_SEND,
-+ KDBUS_ITEM_ATTACH_FLAGS_RECV,
-+ KDBUS_ITEM_ID,
-+ KDBUS_ITEM_NAME,
-+ KDBUS_ITEM_DST_ID,
-+
-+ /* keep these item types in sync with KDBUS_ATTACH_* flags */
-+ _KDBUS_ITEM_ATTACH_BASE = 0x1000,
-+ KDBUS_ITEM_TIMESTAMP = _KDBUS_ITEM_ATTACH_BASE,
-+ KDBUS_ITEM_CREDS,
-+ KDBUS_ITEM_PIDS,
-+ KDBUS_ITEM_AUXGROUPS,
-+ KDBUS_ITEM_OWNED_NAME,
-+ KDBUS_ITEM_TID_COMM,
-+ KDBUS_ITEM_PID_COMM,
-+ KDBUS_ITEM_EXE,
-+ KDBUS_ITEM_CMDLINE,
-+ KDBUS_ITEM_CGROUP,
-+ KDBUS_ITEM_CAPS,
-+ KDBUS_ITEM_SECLABEL,
-+ KDBUS_ITEM_AUDIT,
-+ KDBUS_ITEM_CONN_DESCRIPTION,
-+
-+ _KDBUS_ITEM_POLICY_BASE = 0x2000,
-+ KDBUS_ITEM_POLICY_ACCESS = _KDBUS_ITEM_POLICY_BASE,
-+
-+ _KDBUS_ITEM_KERNEL_BASE = 0x8000,
-+ KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE,
-+ KDBUS_ITEM_NAME_REMOVE,
-+ KDBUS_ITEM_NAME_CHANGE,
-+ KDBUS_ITEM_ID_ADD,
-+ KDBUS_ITEM_ID_REMOVE,
-+ KDBUS_ITEM_REPLY_TIMEOUT,
-+ KDBUS_ITEM_REPLY_DEAD,
-+};
-+
-+/**
-+ * struct kdbus_item - chain of data blocks
-+ * @size: Overall data record size
-+ * @type: Kdbus_item type of data
-+ * @data: Generic bytes
-+ * @data32: Generic 32 bit array
-+ * @data64: Generic 64 bit array
-+ * @str: Generic string
-+ * @id: Connection ID
-+ * @vec: KDBUS_ITEM_PAYLOAD_VEC
-+ * @creds: KDBUS_ITEM_CREDS
-+ * @audit: KDBUS_ITEM_AUDIT
-+ * @timestamp: KDBUS_ITEM_TIMESTAMP
-+ * @name: KDBUS_ITEM_NAME
-+ * @bloom_parameter: KDBUS_ITEM_BLOOM_PARAMETER
-+ * @bloom_filter: KDBUS_ITEM_BLOOM_FILTER
-+ * @memfd: KDBUS_ITEM_PAYLOAD_MEMFD
-+ * @name_change: KDBUS_ITEM_NAME_ADD
-+ * KDBUS_ITEM_NAME_REMOVE
-+ * KDBUS_ITEM_NAME_CHANGE
-+ * @id_change: KDBUS_ITEM_ID_ADD
-+ * KDBUS_ITEM_ID_REMOVE
-+ * @policy: KDBUS_ITEM_POLICY_ACCESS
-+ */
-+struct kdbus_item {
-+ __u64 size;
-+ __u64 type;
-+ union {
-+ __u8 data[0];
-+ __u32 data32[0];
-+ __u64 data64[0];
-+ char str[0];
-+
-+ __u64 id;
-+ struct kdbus_vec vec;
-+ struct kdbus_creds creds;
-+ struct kdbus_pids pids;
-+ struct kdbus_audit audit;
-+ struct kdbus_caps caps;
-+ struct kdbus_timestamp timestamp;
-+ struct kdbus_name name;
-+ struct kdbus_bloom_parameter bloom_parameter;
-+ struct kdbus_bloom_filter bloom_filter;
-+ struct kdbus_memfd memfd;
-+ int fds[0];
-+ struct kdbus_notify_name_change name_change;
-+ struct kdbus_notify_id_change id_change;
-+ struct kdbus_policy_access policy_access;
-+ };
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_msg_flags - type of message
-+ * @KDBUS_MSG_EXPECT_REPLY: Expect a reply message, used for
-+ * method calls. The userspace-supplied
-+ * cookie identifies the message and the
-+ * respective reply carries the cookie
-+ * in cookie_reply
-+ * @KDBUS_MSG_NO_AUTO_START: Do not start a service if the addressed
-+ * name is not currently active. This flag is
-+ * not looked at by the kernel but only
-+ * serves as hint for userspace implementations.
-+ * @KDBUS_MSG_SIGNAL: Treat this message as signal
-+ */
-+enum kdbus_msg_flags {
-+ KDBUS_MSG_EXPECT_REPLY = 1ULL << 0,
-+ KDBUS_MSG_NO_AUTO_START = 1ULL << 1,
-+ KDBUS_MSG_SIGNAL = 1ULL << 2,
-+};
-+
-+/**
-+ * enum kdbus_payload_type - type of payload carried by message
-+ * @KDBUS_PAYLOAD_KERNEL: Kernel-generated simple message
-+ * @KDBUS_PAYLOAD_DBUS: D-Bus marshalling "DBusDBus"
-+ *
-+ * Any payload-type is accepted. Common types will get added here once
-+ * established.
-+ */
-+enum kdbus_payload_type {
-+ KDBUS_PAYLOAD_KERNEL,
-+ KDBUS_PAYLOAD_DBUS = 0x4442757344427573ULL,
-+};
-+
-+/**
-+ * struct kdbus_msg - the representation of a kdbus message
-+ * @size: Total size of the message
-+ * @flags: Message flags (KDBUS_MSG_*), userspace → kernel
-+ * @priority: Message queue priority value
-+ * @dst_id: 64-bit ID of the destination connection
-+ * @src_id: 64-bit ID of the source connection
-+ * @payload_type: Payload type (KDBUS_PAYLOAD_*)
-+ * @cookie: Userspace-supplied cookie, for the connection
-+ * to identify its messages
-+ * @timeout_ns: The time to wait for a message reply from the peer.
-+ * If there is no reply, and the send command is
-+ * executed asynchronously, a kernel-generated message
-+ * with an attached KDBUS_ITEM_REPLY_TIMEOUT item
-+ * is sent to @src_id. For synchronously executed send
-+ * command, the value denotes the maximum time the call
-+ * blocks to wait for a reply. The timeout is expected in
-+ * nanoseconds and as absolute CLOCK_MONOTONIC value.
-+ * @cookie_reply: A reply to the requesting message with the same
-+ * cookie. The requesting connection can match its
-+ * request and the reply with this value
-+ * @items: A list of kdbus_items containing the message payload
-+ */
-+struct kdbus_msg {
-+ __u64 size;
-+ __u64 flags;
-+ __s64 priority;
-+ __u64 dst_id;
-+ __u64 src_id;
-+ __u64 payload_type;
-+ __u64 cookie;
-+ union {
-+ __u64 timeout_ns;
-+ __u64 cookie_reply;
-+ };
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_msg_info - returned message container
-+ * @offset: Offset of kdbus_msg slice in pool
-+ * @msg_size: Copy of the kdbus_msg.size field
-+ * @return_flags: Command return flags, kernel → userspace
-+ */
-+struct kdbus_msg_info {
-+ __u64 offset;
-+ __u64 msg_size;
-+ __u64 return_flags;
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_send_flags - flags for sending messages
-+ * @KDBUS_SEND_SYNC_REPLY: Wait for destination connection to
-+ * reply to this message. The
-+ * KDBUS_CMD_SEND ioctl() will block
-+ * until the reply is received, and
-+ * reply in struct kdbus_cmd_send will
-+ * yield the offset in the sender's pool
-+ * where the reply can be found.
-+ * This flag is only valid if
-+ * @KDBUS_MSG_EXPECT_REPLY is set as well.
-+ */
-+enum kdbus_send_flags {
-+ KDBUS_SEND_SYNC_REPLY = 1ULL << 0,
-+};
-+
-+/**
-+ * struct kdbus_cmd_send - send message
-+ * @size: Overall size of this structure
-+ * @flags: Flags to change send behavior (KDBUS_SEND_*)
-+ * @return_flags: Command return flags, kernel → userspace
-+ * @msg_address: Storage address of the kdbus_msg to send
-+ * @reply: Storage for message reply if KDBUS_SEND_SYNC_REPLY
-+ * was given
-+ * @items: Additional items for this command
-+ */
-+struct kdbus_cmd_send {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 msg_address;
-+ struct kdbus_msg_info reply;
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_recv_flags - flags for de-queuing messages
-+ * @KDBUS_RECV_PEEK: Return the next queued message without
-+ * actually de-queuing it, and without installing
-+ * any file descriptors or other resources. It is
-+ * usually used to determine the activating
-+ * connection of a bus name.
-+ * @KDBUS_RECV_DROP: Drop and free the next queued message and all
-+ * its resources without actually receiving it.
-+ * @KDBUS_RECV_USE_PRIORITY: Only de-queue messages with the specified or
-+ * higher priority (lowest values); if not set,
-+ * the priority value is ignored.
-+ */
-+enum kdbus_recv_flags {
-+ KDBUS_RECV_PEEK = 1ULL << 0,
-+ KDBUS_RECV_DROP = 1ULL << 1,
-+ KDBUS_RECV_USE_PRIORITY = 1ULL << 2,
-+};
-+
-+/**
-+ * enum kdbus_recv_return_flags - return flags for message receive commands
-+ * @KDBUS_RECV_RETURN_INCOMPLETE_FDS: One or more file descriptors could not
-+ * be installed. These descriptors in
-+ * KDBUS_ITEM_FDS will carry the value -1.
-+ * @KDBUS_RECV_RETURN_DROPPED_MSGS: There have been dropped messages since
-+ * the last time a message was received.
-+ * The 'dropped_msgs' counter contains the
-+ * number of messages dropped pool
-+ * overflows or other missed broadcasts.
-+ */
-+enum kdbus_recv_return_flags {
-+ KDBUS_RECV_RETURN_INCOMPLETE_FDS = 1ULL << 0,
-+ KDBUS_RECV_RETURN_DROPPED_MSGS = 1ULL << 1,
-+};
-+
-+/**
-+ * struct kdbus_cmd_recv - struct to de-queue a buffered message
-+ * @size: Overall size of this object
-+ * @flags: KDBUS_RECV_* flags, userspace → kernel
-+ * @return_flags: Command return flags, kernel → userspace
-+ * @priority: Minimum priority of the messages to de-queue. Lowest
-+ * values have the highest priority.
-+ * @dropped_msgs: In case there were any dropped messages since the last
-+ * time a message was received, this will be set to the
-+ * number of lost messages and
-+ * KDBUS_RECV_RETURN_DROPPED_MSGS will be set in
-+ * 'return_flags'. This can only happen if the ioctl
-+ * returns 0 or EAGAIN.
-+ * @msg: Return storage for received message.
-+ * @items: Additional items for this command.
-+ *
-+ * This struct is used with the KDBUS_CMD_RECV ioctl.
-+ */
-+struct kdbus_cmd_recv {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __s64 priority;
-+ __u64 dropped_msgs;
-+ struct kdbus_msg_info msg;
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_cmd_free - struct to free a slice of memory in the pool
-+ * @size: Overall size of this structure
-+ * @flags: Flags for the free command, userspace → kernel
-+ * @return_flags: Command return flags, kernel → userspace
-+ * @offset: The offset of the memory slice, as returned by other
-+ * ioctls
-+ * @items: Additional items to modify the behavior
-+ *
-+ * This struct is used with the KDBUS_CMD_FREE ioctl.
-+ */
-+struct kdbus_cmd_free {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 offset;
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_hello_flags - flags for struct kdbus_cmd_hello
-+ * @KDBUS_HELLO_ACCEPT_FD: The connection allows the reception of
-+ * any passed file descriptors
-+ * @KDBUS_HELLO_ACTIVATOR: Special-purpose connection which registers
-+ * a well-know name for a process to be started
-+ * when traffic arrives
-+ * @KDBUS_HELLO_POLICY_HOLDER: Special-purpose connection which registers
-+ * policy entries for a name. The provided name
-+ * is not activated and not registered with the
-+ * name database, it only allows unprivileged
-+ * connections to acquire a name, talk or discover
-+ * a service
-+ * @KDBUS_HELLO_MONITOR: Special-purpose connection to monitor
-+ * bus traffic
-+ */
-+enum kdbus_hello_flags {
-+ KDBUS_HELLO_ACCEPT_FD = 1ULL << 0,
-+ KDBUS_HELLO_ACTIVATOR = 1ULL << 1,
-+ KDBUS_HELLO_POLICY_HOLDER = 1ULL << 2,
-+ KDBUS_HELLO_MONITOR = 1ULL << 3,
-+};
-+
-+/**
-+ * struct kdbus_cmd_hello - struct to say hello to kdbus
-+ * @size: The total size of the structure
-+ * @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel
-+ * @return_flags: Command return flags, kernel → userspace
-+ * @attach_flags_send: Mask of metadata to attach to each message sent
-+ * off by this connection (KDBUS_ATTACH_*)
-+ * @attach_flags_recv: Mask of metadata to attach to each message receieved
-+ * by the new connection (KDBUS_ATTACH_*)
-+ * @bus_flags: The flags field copied verbatim from the original
-+ * KDBUS_CMD_BUS_MAKE ioctl. It's intended to be useful
-+ * to do negotiation of features of the payload that is
-+ * transferred (kernel → userspace)
-+ * @id: The ID of this connection (kernel → userspace)
-+ * @pool_size: Size of the connection's buffer where the received
-+ * messages are placed
-+ * @offset: Pool offset where items are returned to report
-+ * additional information about the bus and the newly
-+ * created connection.
-+ * @items_size: Size of buffer returned in the pool slice at @offset.
-+ * @id128: Unique 128-bit ID of the bus (kernel → userspace)
-+ * @items: A list of items
-+ *
-+ * This struct is used with the KDBUS_CMD_HELLO ioctl.
-+ */
-+struct kdbus_cmd_hello {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 attach_flags_send;
-+ __u64 attach_flags_recv;
-+ __u64 bus_flags;
-+ __u64 id;
-+ __u64 pool_size;
-+ __u64 offset;
-+ __u64 items_size;
-+ __u8 id128[16];
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_info - connection information
-+ * @size: total size of the struct
-+ * @id: 64bit object ID
-+ * @flags: object creation flags
-+ * @items: list of items
-+ *
-+ * Note that the user is responsible for freeing the allocated memory with
-+ * the KDBUS_CMD_FREE ioctl.
-+ */
-+struct kdbus_info {
-+ __u64 size;
-+ __u64 id;
-+ __u64 flags;
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_list_flags - what to include into the returned list
-+ * @KDBUS_LIST_UNIQUE: active connections
-+ * @KDBUS_LIST_ACTIVATORS: activator connections
-+ * @KDBUS_LIST_NAMES: known well-known names
-+ * @KDBUS_LIST_QUEUED: queued-up names
-+ */
-+enum kdbus_list_flags {
-+ KDBUS_LIST_UNIQUE = 1ULL << 0,
-+ KDBUS_LIST_NAMES = 1ULL << 1,
-+ KDBUS_LIST_ACTIVATORS = 1ULL << 2,
-+ KDBUS_LIST_QUEUED = 1ULL << 3,
-+};
-+
-+/**
-+ * struct kdbus_cmd_list - list connections
-+ * @size: overall size of this object
-+ * @flags: flags for the query (KDBUS_LIST_*), userspace → kernel
-+ * @return_flags: command return flags, kernel → userspace
-+ * @offset: Offset in the caller's pool buffer where an array of
-+ * kdbus_info objects is stored.
-+ * The user must use KDBUS_CMD_FREE to free the
-+ * allocated memory.
-+ * @list_size: size of returned list in bytes
-+ * @items: Items for the command. Reserved for future use.
-+ *
-+ * This structure is used with the KDBUS_CMD_LIST ioctl.
-+ */
-+struct kdbus_cmd_list {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 offset;
-+ __u64 list_size;
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * struct kdbus_cmd_info - struct used for KDBUS_CMD_CONN_INFO ioctl
-+ * @size: The total size of the struct
-+ * @flags: Flags for this ioctl, userspace → kernel
-+ * @return_flags: Command return flags, kernel → userspace
-+ * @id: The 64-bit ID of the connection. If set to zero, passing
-+ * @name is required. kdbus will look up the name to
-+ * determine the ID in this case.
-+ * @attach_flags: Set of attach flags to specify the set of information
-+ * to receive, userspace → kernel
-+ * @offset: Returned offset in the caller's pool buffer where the
-+ * kdbus_info struct result is stored. The user must
-+ * use KDBUS_CMD_FREE to free the allocated memory.
-+ * @info_size: Output buffer to report size of data at @offset.
-+ * @items: The optional item list, containing the
-+ * well-known name to look up as a KDBUS_ITEM_NAME.
-+ * Only needed in case @id is zero.
-+ *
-+ * On success, the KDBUS_CMD_CONN_INFO ioctl will return 0 and @offset will
-+ * tell the user the offset in the connection pool buffer at which to find the
-+ * result in a struct kdbus_info.
-+ */
-+struct kdbus_cmd_info {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 id;
-+ __u64 attach_flags;
-+ __u64 offset;
-+ __u64 info_size;
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_cmd_match_flags - flags to control the KDBUS_CMD_MATCH_ADD ioctl
-+ * @KDBUS_MATCH_REPLACE: If entries with the supplied cookie already
-+ * exists, remove them before installing the new
-+ * matches.
-+ */
-+enum kdbus_cmd_match_flags {
-+ KDBUS_MATCH_REPLACE = 1ULL << 0,
-+};
-+
-+/**
-+ * struct kdbus_cmd_match - struct to add or remove matches
-+ * @size: The total size of the struct
-+ * @flags: Flags for match command (KDBUS_MATCH_*),
-+ * userspace → kernel
-+ * @return_flags: Command return flags, kernel → userspace
-+ * @cookie: Userspace supplied cookie. When removing, the cookie
-+ * identifies the match to remove
-+ * @items: A list of items for additional information
-+ *
-+ * This structure is used with the KDBUS_CMD_MATCH_ADD and
-+ * KDBUS_CMD_MATCH_REMOVE ioctl.
-+ */
-+struct kdbus_cmd_match {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ __u64 cookie;
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,ENDPOINT}_MAKE
-+ * @KDBUS_MAKE_ACCESS_GROUP: Make the bus or endpoint node group-accessible
-+ * @KDBUS_MAKE_ACCESS_WORLD: Make the bus or endpoint node world-accessible
-+ */
-+enum kdbus_make_flags {
-+ KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0,
-+ KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1,
-+};
-+
-+/**
-+ * enum kdbus_name_flags - flags for KDBUS_CMD_NAME_ACQUIRE
-+ * @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections
-+ * @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name
-+ * @KDBUS_NAME_QUEUE: Name should be queued if busy
-+ * @KDBUS_NAME_IN_QUEUE: Name is queued
-+ * @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
-+ * @KDBUS_NAME_PRIMARY: Primary owner of the name
-+ * @KDBUS_NAME_ACQUIRED: Name was acquired/queued _now_
-+ */
-+enum kdbus_name_flags {
-+ KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0,
-+ KDBUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1,
-+ KDBUS_NAME_QUEUE = 1ULL << 2,
-+ KDBUS_NAME_IN_QUEUE = 1ULL << 3,
-+ KDBUS_NAME_ACTIVATOR = 1ULL << 4,
-+ KDBUS_NAME_PRIMARY = 1ULL << 5,
-+ KDBUS_NAME_ACQUIRED = 1ULL << 6,
-+};
-+
-+/**
-+ * struct kdbus_cmd - generic ioctl payload
-+ * @size: Overall size of this structure
-+ * @flags: Flags for this ioctl, userspace → kernel
-+ * @return_flags: Ioctl return flags, kernel → userspace
-+ * @items: Additional items to modify the behavior
-+ *
-+ * This is a generic ioctl payload object. It's used by all ioctls that only
-+ * take flags and items as input.
-+ */
-+struct kdbus_cmd {
-+ __u64 size;
-+ __u64 flags;
-+ __u64 return_flags;
-+ struct kdbus_item items[0];
-+} __attribute__((__aligned__(8)));
-+
-+/**
-+ * Ioctl API
-+ *
-+ * KDBUS_CMD_BUS_MAKE: After opening the "control" node, this command
-+ * creates a new bus with the specified
-+ * name. The bus is immediately shut down and
-+ * cleaned up when the opened file descriptor is
-+ * closed.
-+ *
-+ * KDBUS_CMD_ENDPOINT_MAKE: Creates a new named special endpoint to talk to
-+ * the bus. Such endpoints usually carry a more
-+ * restrictive policy and grant restricted access
-+ * to specific applications.
-+ * KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
-+ * to update the policy.
-+ *
-+ * KDBUS_CMD_HELLO: By opening the bus node, a connection is
-+ * created. After a HELLO the opened connection
-+ * becomes an active peer on the bus.
-+ * KDBUS_CMD_UPDATE: Update the properties of a connection. Used to
-+ * update the metadata subscription mask and
-+ * policy.
-+ * KDBUS_CMD_BYEBYE: Disconnect a connection. If there are no
-+ * messages queued up in the connection's pool,
-+ * the call succeeds, and the handle is rendered
-+ * unusable. Otherwise, -EBUSY is returned without
-+ * any further side-effects.
-+ * KDBUS_CMD_FREE: Release the allocated memory in the receiver's
-+ * pool.
-+ * KDBUS_CMD_CONN_INFO: Retrieve credentials and properties of the
-+ * initial creator of the connection. The data was
-+ * stored at registration time and does not
-+ * necessarily represent the connected process or
-+ * the actual state of the process.
-+ * KDBUS_CMD_BUS_CREATOR_INFO: Retrieve information of the creator of the bus
-+ * a connection is attached to.
-+ *
-+ * KDBUS_CMD_SEND: Send a message and pass data from userspace to
-+ * the kernel.
-+ * KDBUS_CMD_RECV: Receive a message from the kernel which is
-+ * placed in the receiver's pool.
-+ *
-+ * KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with
-+ * the connection. Well-known names are used to
-+ * address a peer on the bus.
-+ * KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection
-+ * currently owns.
-+ * KDBUS_CMD_LIST: Retrieve the list of all currently registered
-+ * well-known and unique names.
-+ *
-+ * KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should
-+ * be delivered to the connection.
-+ * KDBUS_CMD_MATCH_REMOVE: Remove a current match for broadcast messages.
-+ */
-+enum kdbus_ioctl_type {
-+ /* bus owner (00-0f) */
-+ KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x00,
-+ struct kdbus_cmd),
-+
-+ /* endpoint owner (10-1f) */
-+ KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10,
-+ struct kdbus_cmd),
-+ KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x11,
-+ struct kdbus_cmd),
-+
-+ /* connection owner (80-ff) */
-+ KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x80,
-+ struct kdbus_cmd_hello),
-+ KDBUS_CMD_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x81,
-+ struct kdbus_cmd),
-+ KDBUS_CMD_BYEBYE = _IOW(KDBUS_IOCTL_MAGIC, 0x82,
-+ struct kdbus_cmd),
-+ KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x83,
-+ struct kdbus_cmd_free),
-+ KDBUS_CMD_CONN_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x84,
-+ struct kdbus_cmd_info),
-+ KDBUS_CMD_BUS_CREATOR_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x85,
-+ struct kdbus_cmd_info),
-+ KDBUS_CMD_LIST = _IOR(KDBUS_IOCTL_MAGIC, 0x86,
-+ struct kdbus_cmd_list),
-+
-+ KDBUS_CMD_SEND = _IOW(KDBUS_IOCTL_MAGIC, 0x90,
-+ struct kdbus_cmd_send),
-+ KDBUS_CMD_RECV = _IOR(KDBUS_IOCTL_MAGIC, 0x91,
-+ struct kdbus_cmd_recv),
-+
-+ KDBUS_CMD_NAME_ACQUIRE = _IOW(KDBUS_IOCTL_MAGIC, 0xa0,
-+ struct kdbus_cmd),
-+ KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0xa1,
-+ struct kdbus_cmd),
-+
-+ KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0xb0,
-+ struct kdbus_cmd_match),
-+ KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0xb1,
-+ struct kdbus_cmd_match),
-+};
-+
-+#endif /* _UAPI_KDBUS_H_ */
-diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h
-index 7b1425a..ce2ac5a 100644
---- a/include/uapi/linux/magic.h
-+++ b/include/uapi/linux/magic.h
-@@ -76,4 +76,6 @@
- #define BTRFS_TEST_MAGIC 0x73727279
- #define NSFS_MAGIC 0x6e736673
-
-+#define KDBUS_SUPER_MAGIC 0x44427573
-+
- #endif /* __LINUX_MAGIC_H__ */
-diff --git a/init/Kconfig b/init/Kconfig
-index dc24dec..9388071 100644
---- a/init/Kconfig
-+++ b/init/Kconfig
-@@ -261,6 +261,19 @@ config POSIX_MQUEUE_SYSCTL
- depends on SYSCTL
- default y
-
-+config KDBUS
-+ tristate "kdbus interprocess communication"
-+ depends on TMPFS
-+ help
-+ D-Bus is a system for low-latency, low-overhead, easy to use
-+ interprocess communication (IPC).
-+
-+ See the man-pages and HTML files in Documentation/kdbus/
-+ that are generated by 'make mandocs' and 'make htmldocs'.
-+
-+ If you have an ordinary machine, select M here. The module
-+ will be called kdbus.
-+
- config CROSS_MEMORY_ATTACH
- bool "Enable process_vm_readv/writev syscalls"
- depends on MMU
-diff --git a/ipc/Makefile b/ipc/Makefile
-index 86c7300..68ec416 100644
---- a/ipc/Makefile
-+++ b/ipc/Makefile
-@@ -9,4 +9,4 @@ obj_mq-$(CONFIG_COMPAT) += compat_mq.o
- obj-$(CONFIG_POSIX_MQUEUE) += mqueue.o msgutil.o $(obj_mq-y)
- obj-$(CONFIG_IPC_NS) += namespace.o
- obj-$(CONFIG_POSIX_MQUEUE_SYSCTL) += mq_sysctl.o
--
-+obj-$(CONFIG_KDBUS) += kdbus/
-diff --git a/ipc/kdbus/Makefile b/ipc/kdbus/Makefile
-new file mode 100644
-index 0000000..66663a1
---- /dev/null
-+++ b/ipc/kdbus/Makefile
-@@ -0,0 +1,33 @@
-+#
-+# By setting KDBUS_EXT=2, the kdbus module will be built as kdbus2.ko, and
-+# KBUILD_MODNAME=kdbus2. This has the effect that all exported objects have
-+# different names than usually (kdbus2fs, /sys/fs/kdbus2/) and you can run
-+# your test-infrastructure against the kdbus2.ko, while running your system
-+# on kdbus.ko.
-+#
-+# To just build the module, use:
-+# make KDBUS_EXT=2 M=ipc/kdbus
-+#
-+
-+kdbus$(KDBUS_EXT)-y := \
-+ bus.o \
-+ connection.o \
-+ endpoint.o \
-+ fs.o \
-+ handle.o \
-+ item.o \
-+ main.o \
-+ match.o \
-+ message.o \
-+ metadata.o \
-+ names.o \
-+ node.o \
-+ notify.o \
-+ domain.o \
-+ policy.o \
-+ pool.o \
-+ reply.o \
-+ queue.o \
-+ util.o
-+
-+obj-$(CONFIG_KDBUS) += kdbus$(KDBUS_EXT).o
-diff --git a/ipc/kdbus/bus.c b/ipc/kdbus/bus.c
-new file mode 100644
-index 0000000..a67f825
---- /dev/null
-+++ b/ipc/kdbus/bus.c
-@@ -0,0 +1,514 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/fs.h>
-+#include <linux/hashtable.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/random.h>
-+#include <linux/sched.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+#include <linux/uio.h>
-+
-+#include "bus.h"
-+#include "notify.h"
-+#include "connection.h"
-+#include "domain.h"
-+#include "endpoint.h"
-+#include "handle.h"
-+#include "item.h"
-+#include "match.h"
-+#include "message.h"
-+#include "metadata.h"
-+#include "names.h"
-+#include "policy.h"
-+#include "util.h"
-+
-+static void kdbus_bus_free(struct kdbus_node *node)
-+{
-+ struct kdbus_bus *bus = container_of(node, struct kdbus_bus, node);
-+
-+ WARN_ON(!list_empty(&bus->monitors_list));
-+ WARN_ON(!hash_empty(bus->conn_hash));
-+
-+ kdbus_notify_free(bus);
-+
-+ kdbus_user_unref(bus->creator);
-+ kdbus_name_registry_free(bus->name_registry);
-+ kdbus_domain_unref(bus->domain);
-+ kdbus_policy_db_clear(&bus->policy_db);
-+ kdbus_meta_proc_unref(bus->creator_meta);
-+ kfree(bus);
-+}
-+
-+static void kdbus_bus_release(struct kdbus_node *node, bool was_active)
-+{
-+ struct kdbus_bus *bus = container_of(node, struct kdbus_bus, node);
-+
-+ if (was_active)
-+ atomic_dec(&bus->creator->buses);
-+}
-+
-+static struct kdbus_bus *kdbus_bus_new(struct kdbus_domain *domain,
-+ const char *name,
-+ struct kdbus_bloom_parameter *bloom,
-+ const u64 *pattach_owner,
-+ u64 flags, kuid_t uid, kgid_t gid)
-+{
-+ struct kdbus_bus *b;
-+ u64 attach_owner;
-+ int ret;
-+
-+ if (bloom->size < 8 || bloom->size > KDBUS_BUS_BLOOM_MAX_SIZE ||
-+ !KDBUS_IS_ALIGNED8(bloom->size) || bloom->n_hash < 1)
-+ return ERR_PTR(-EINVAL);
-+
-+ ret = kdbus_sanitize_attach_flags(pattach_owner ? *pattach_owner : 0,
-+ &attach_owner);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+
-+ ret = kdbus_verify_uid_prefix(name, domain->user_namespace, uid);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+
-+ b = kzalloc(sizeof(*b), GFP_KERNEL);
-+ if (!b)
-+ return ERR_PTR(-ENOMEM);
-+
-+ kdbus_node_init(&b->node, KDBUS_NODE_BUS);
-+
-+ b->node.free_cb = kdbus_bus_free;
-+ b->node.release_cb = kdbus_bus_release;
-+ b->node.uid = uid;
-+ b->node.gid = gid;
-+ b->node.mode = S_IRUSR | S_IXUSR;
-+
-+ if (flags & (KDBUS_MAKE_ACCESS_GROUP | KDBUS_MAKE_ACCESS_WORLD))
-+ b->node.mode |= S_IRGRP | S_IXGRP;
-+ if (flags & KDBUS_MAKE_ACCESS_WORLD)
-+ b->node.mode |= S_IROTH | S_IXOTH;
-+
-+ b->id = atomic64_inc_return(&domain->last_id);
-+ b->bus_flags = flags;
-+ b->attach_flags_owner = attach_owner;
-+ generate_random_uuid(b->id128);
-+ b->bloom = *bloom;
-+ b->domain = kdbus_domain_ref(domain);
-+
-+ kdbus_policy_db_init(&b->policy_db);
-+
-+ init_rwsem(&b->conn_rwlock);
-+ hash_init(b->conn_hash);
-+ INIT_LIST_HEAD(&b->monitors_list);
-+
-+ INIT_LIST_HEAD(&b->notify_list);
-+ spin_lock_init(&b->notify_lock);
-+ mutex_init(&b->notify_flush_lock);
-+
-+ ret = kdbus_node_link(&b->node, &domain->node, name);
-+ if (ret < 0)
-+ goto exit_unref;
-+
-+ /* cache the metadata/credentials of the creator */
-+ b->creator_meta = kdbus_meta_proc_new();
-+ if (IS_ERR(b->creator_meta)) {
-+ ret = PTR_ERR(b->creator_meta);
-+ b->creator_meta = NULL;
-+ goto exit_unref;
-+ }
-+
-+ ret = kdbus_meta_proc_collect(b->creator_meta,
-+ KDBUS_ATTACH_CREDS |
-+ KDBUS_ATTACH_PIDS |
-+ KDBUS_ATTACH_AUXGROUPS |
-+ KDBUS_ATTACH_TID_COMM |
-+ KDBUS_ATTACH_PID_COMM |
-+ KDBUS_ATTACH_EXE |
-+ KDBUS_ATTACH_CMDLINE |
-+ KDBUS_ATTACH_CGROUP |
-+ KDBUS_ATTACH_CAPS |
-+ KDBUS_ATTACH_SECLABEL |
-+ KDBUS_ATTACH_AUDIT);
-+ if (ret < 0)
-+ goto exit_unref;
-+
-+ b->name_registry = kdbus_name_registry_new();
-+ if (IS_ERR(b->name_registry)) {
-+ ret = PTR_ERR(b->name_registry);
-+ b->name_registry = NULL;
-+ goto exit_unref;
-+ }
-+
-+ /*
-+ * Bus-limits of the creator are accounted on its real UID, just like
-+ * all other per-user limits.
-+ */
-+ b->creator = kdbus_user_lookup(domain, current_uid());
-+ if (IS_ERR(b->creator)) {
-+ ret = PTR_ERR(b->creator);
-+ b->creator = NULL;
-+ goto exit_unref;
-+ }
-+
-+ return b;
-+
-+exit_unref:
-+ kdbus_node_deactivate(&b->node);
-+ kdbus_node_unref(&b->node);
-+ return ERR_PTR(ret);
-+}
-+
-+/**
-+ * kdbus_bus_ref() - increase the reference counter of a kdbus_bus
-+ * @bus: The bus to reference
-+ *
-+ * Every user of a bus, except for its creator, must add a reference to the
-+ * kdbus_bus using this function.
-+ *
-+ * Return: the bus itself
-+ */
-+struct kdbus_bus *kdbus_bus_ref(struct kdbus_bus *bus)
-+{
-+ if (bus)
-+ kdbus_node_ref(&bus->node);
-+ return bus;
-+}
-+
-+/**
-+ * kdbus_bus_unref() - decrease the reference counter of a kdbus_bus
-+ * @bus: The bus to unref
-+ *
-+ * Release a reference. If the reference count drops to 0, the bus will be
-+ * freed.
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_bus *kdbus_bus_unref(struct kdbus_bus *bus)
-+{
-+ if (bus)
-+ kdbus_node_unref(&bus->node);
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_bus_find_conn_by_id() - find a connection with a given id
-+ * @bus: The bus to look for the connection
-+ * @id: The 64-bit connection id
-+ *
-+ * Looks up a connection with a given id. The returned connection
-+ * is ref'ed, and needs to be unref'ed by the user. Returns NULL if
-+ * the connection can't be found.
-+ */
-+struct kdbus_conn *kdbus_bus_find_conn_by_id(struct kdbus_bus *bus, u64 id)
-+{
-+ struct kdbus_conn *conn, *found = NULL;
-+
-+ down_read(&bus->conn_rwlock);
-+ hash_for_each_possible(bus->conn_hash, conn, hentry, id)
-+ if (conn->id == id) {
-+ found = kdbus_conn_ref(conn);
-+ break;
-+ }
-+ up_read(&bus->conn_rwlock);
-+
-+ return found;
-+}
-+
-+/**
-+ * kdbus_bus_broadcast() - send a message to all subscribed connections
-+ * @bus: The bus the connections are connected to
-+ * @conn_src: The source connection, may be %NULL for kernel notifications
-+ * @staging: Staging object containing the message to send
-+ *
-+ * Send message to all connections that are currently active on the bus.
-+ * Connections must still have matches installed in order to let the message
-+ * pass.
-+ *
-+ * The caller must hold the name-registry lock of @bus.
-+ */
-+void kdbus_bus_broadcast(struct kdbus_bus *bus,
-+ struct kdbus_conn *conn_src,
-+ struct kdbus_staging *staging)
-+{
-+ struct kdbus_conn *conn_dst;
-+ unsigned int i;
-+ int ret;
-+
-+ lockdep_assert_held(&bus->name_registry->rwlock);
-+
-+ /*
-+ * Make sure broadcast are queued on monitors before we send it out to
-+ * anyone else. Otherwise, connections might react to broadcasts before
-+ * the monitor gets the broadcast queued. In the worst case, the
-+ * monitor sees a reaction to the broadcast before the broadcast itself.
-+ * We don't give ordering guarantees across connections (and monitors
-+ * can re-construct order via sequence numbers), but we should at least
-+ * try to avoid re-ordering for monitors.
-+ */
-+ kdbus_bus_eavesdrop(bus, conn_src, staging);
-+
-+ down_read(&bus->conn_rwlock);
-+ hash_for_each(bus->conn_hash, i, conn_dst, hentry) {
-+ if (!kdbus_conn_is_ordinary(conn_dst))
-+ continue;
-+
-+ /*
-+ * Check if there is a match for the kmsg object in
-+ * the destination connection match db
-+ */
-+ if (!kdbus_match_db_match_msg(conn_dst->match_db, conn_src,
-+ staging))
-+ continue;
-+
-+ if (conn_src) {
-+ /*
-+ * Anyone can send broadcasts, as they have no
-+ * destination. But a receiver needs TALK access to
-+ * the sender in order to receive broadcasts.
-+ */
-+ if (!kdbus_conn_policy_talk(conn_dst, NULL, conn_src))
-+ continue;
-+ } else {
-+ /*
-+ * Check if there is a policy db that prevents the
-+ * destination connection from receiving this kernel
-+ * notification
-+ */
-+ if (!kdbus_conn_policy_see_notification(conn_dst, NULL,
-+ staging->msg))
-+ continue;
-+ }
-+
-+ ret = kdbus_conn_entry_insert(conn_src, conn_dst, staging,
-+ NULL, NULL);
-+ if (ret < 0)
-+ kdbus_conn_lost_message(conn_dst);
-+ }
-+ up_read(&bus->conn_rwlock);
-+}
-+
-+/**
-+ * kdbus_bus_eavesdrop() - send a message to all subscribed monitors
-+ * @bus: The bus the monitors are connected to
-+ * @conn_src: The source connection, may be %NULL for kernel notifications
-+ * @staging: Staging object containing the message to send
-+ *
-+ * Send message to all monitors that are currently active on the bus. Monitors
-+ * must still have matches installed in order to let the message pass.
-+ *
-+ * The caller must hold the name-registry lock of @bus.
-+ */
-+void kdbus_bus_eavesdrop(struct kdbus_bus *bus,
-+ struct kdbus_conn *conn_src,
-+ struct kdbus_staging *staging)
-+{
-+ struct kdbus_conn *conn_dst;
-+ int ret;
-+
-+ /*
-+ * Monitor connections get all messages; ignore possible errors
-+ * when sending messages to monitor connections.
-+ */
-+
-+ lockdep_assert_held(&bus->name_registry->rwlock);
-+
-+ down_read(&bus->conn_rwlock);
-+ list_for_each_entry(conn_dst, &bus->monitors_list, monitor_entry) {
-+ ret = kdbus_conn_entry_insert(conn_src, conn_dst, staging,
-+ NULL, NULL);
-+ if (ret < 0)
-+ kdbus_conn_lost_message(conn_dst);
-+ }
-+ up_read(&bus->conn_rwlock);
-+}
-+
-+/**
-+ * kdbus_cmd_bus_make() - handle KDBUS_CMD_BUS_MAKE
-+ * @domain: domain to operate on
-+ * @argp: command payload
-+ *
-+ * Return: NULL or newly created bus on success, ERR_PTR on failure.
-+ */
-+struct kdbus_bus *kdbus_cmd_bus_make(struct kdbus_domain *domain,
-+ void __user *argp)
-+{
-+ struct kdbus_bus *bus = NULL;
-+ struct kdbus_cmd *cmd;
-+ struct kdbus_ep *ep = NULL;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_MAKE_NAME, .mandatory = true },
-+ { .type = KDBUS_ITEM_BLOOM_PARAMETER, .mandatory = true },
-+ { .type = KDBUS_ITEM_ATTACH_FLAGS_SEND },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_MAKE_ACCESS_GROUP |
-+ KDBUS_MAKE_ACCESS_WORLD,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+ if (ret > 0)
-+ return NULL;
-+
-+ bus = kdbus_bus_new(domain,
-+ argv[1].item->str, &argv[2].item->bloom_parameter,
-+ argv[3].item ? argv[3].item->data64 : NULL,
-+ cmd->flags, current_euid(), current_egid());
-+ if (IS_ERR(bus)) {
-+ ret = PTR_ERR(bus);
-+ bus = NULL;
-+ goto exit;
-+ }
-+
-+ if (atomic_inc_return(&bus->creator->buses) > KDBUS_USER_MAX_BUSES) {
-+ atomic_dec(&bus->creator->buses);
-+ ret = -EMFILE;
-+ goto exit;
-+ }
-+
-+ if (!kdbus_node_activate(&bus->node)) {
-+ atomic_dec(&bus->creator->buses);
-+ ret = -ESHUTDOWN;
-+ goto exit;
-+ }
-+
-+ ep = kdbus_ep_new(bus, "bus", cmd->flags, bus->node.uid, bus->node.gid,
-+ false);
-+ if (IS_ERR(ep)) {
-+ ret = PTR_ERR(ep);
-+ ep = NULL;
-+ goto exit;
-+ }
-+
-+ if (!kdbus_node_activate(&ep->node)) {
-+ ret = -ESHUTDOWN;
-+ goto exit;
-+ }
-+
-+ /*
-+ * Drop our own reference, effectively causing the endpoint to be
-+ * deactivated and released when the parent bus is.
-+ */
-+ ep = kdbus_ep_unref(ep);
-+
-+exit:
-+ ret = kdbus_args_clear(&args, ret);
-+ if (ret < 0) {
-+ if (ep) {
-+ kdbus_node_deactivate(&ep->node);
-+ kdbus_ep_unref(ep);
-+ }
-+ if (bus) {
-+ kdbus_node_deactivate(&bus->node);
-+ kdbus_bus_unref(bus);
-+ }
-+ return ERR_PTR(ret);
-+ }
-+ return bus;
-+}
-+
-+/**
-+ * kdbus_cmd_bus_creator_info() - handle KDBUS_CMD_BUS_CREATOR_INFO
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_bus_creator_info(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_cmd_info *cmd;
-+ struct kdbus_bus *bus = conn->ep->bus;
-+ struct kdbus_pool_slice *slice = NULL;
-+ struct kdbus_item *meta_items = NULL;
-+ struct kdbus_item_header item_hdr;
-+ struct kdbus_info info = {};
-+ size_t meta_size, name_len, cnt = 0;
-+ struct kvec kvec[6];
-+ u64 attach_flags, size = 0;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ ret = kdbus_sanitize_attach_flags(cmd->attach_flags, &attach_flags);
-+ if (ret < 0)
-+ goto exit;
-+
-+ attach_flags &= bus->attach_flags_owner;
-+
-+ ret = kdbus_meta_emit(bus->creator_meta, NULL, NULL, conn,
-+ attach_flags, &meta_items, &meta_size);
-+ if (ret < 0)
-+ goto exit;
-+
-+ name_len = strlen(bus->node.name) + 1;
-+ info.id = bus->id;
-+ info.flags = bus->bus_flags;
-+ item_hdr.type = KDBUS_ITEM_MAKE_NAME;
-+ item_hdr.size = KDBUS_ITEM_HEADER_SIZE + name_len;
-+
-+ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &size);
-+ kdbus_kvec_set(&kvec[cnt++], &item_hdr, sizeof(item_hdr), &size);
-+ kdbus_kvec_set(&kvec[cnt++], bus->node.name, name_len, &size);
-+ cnt += !!kdbus_kvec_pad(&kvec[cnt], &size);
-+ if (meta_size > 0) {
-+ kdbus_kvec_set(&kvec[cnt++], meta_items, meta_size, &size);
-+ cnt += !!kdbus_kvec_pad(&kvec[cnt], &size);
-+ }
-+
-+ info.size = size;
-+
-+ slice = kdbus_pool_slice_alloc(conn->pool, size, false);
-+ if (IS_ERR(slice)) {
-+ ret = PTR_ERR(slice);
-+ slice = NULL;
-+ goto exit;
-+ }
-+
-+ ret = kdbus_pool_slice_copy_kvec(slice, 0, kvec, cnt, size);
-+ if (ret < 0)
-+ goto exit;
-+
-+ kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->info_size);
-+
-+ if (kdbus_member_set_user(&cmd->offset, argp, typeof(*cmd), offset) ||
-+ kdbus_member_set_user(&cmd->info_size, argp,
-+ typeof(*cmd), info_size))
-+ ret = -EFAULT;
-+
-+exit:
-+ kdbus_pool_slice_release(slice);
-+ kfree(meta_items);
-+ return kdbus_args_clear(&args, ret);
-+}
-diff --git a/ipc/kdbus/bus.h b/ipc/kdbus/bus.h
-new file mode 100644
-index 0000000..8c2acae
---- /dev/null
-+++ b/ipc/kdbus/bus.h
-@@ -0,0 +1,101 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_BUS_H
-+#define __KDBUS_BUS_H
-+
-+#include <linux/hashtable.h>
-+#include <linux/list.h>
-+#include <linux/mutex.h>
-+#include <linux/rwsem.h>
-+#include <linux/spinlock.h>
-+#include <uapi/linux/kdbus.h>
-+
-+#include "metadata.h"
-+#include "names.h"
-+#include "node.h"
-+#include "policy.h"
-+
-+struct kdbus_conn;
-+struct kdbus_domain;
-+struct kdbus_staging;
-+struct kdbus_user;
-+
-+/**
-+ * struct kdbus_bus - bus in a domain
-+ * @node: kdbus_node
-+ * @id: ID of this bus in the domain
-+ * @bus_flags: Simple pass-through flags from userspace to userspace
-+ * @attach_flags_owner: KDBUS_ATTACH_* flags of bus creator that other
-+ * connections can see or query
-+ * @id128: Unique random 128 bit ID of this bus
-+ * @bloom: Bloom parameters
-+ * @domain: Domain of this bus
-+ * @creator: Creator of the bus
-+ * @creator_meta: Meta information about the bus creator
-+ * @last_message_id: Last used message id
-+ * @policy_db: Policy database for this bus
-+ * @name_registry: Name registry of this bus
-+ * @conn_rwlock: Read/Write lock for all lists of child connections
-+ * @conn_hash: Map of connection IDs
-+ * @monitors_list: Connections that monitor this bus
-+ * @notify_list: List of pending kernel-generated messages
-+ * @notify_lock: Notification list lock
-+ * @notify_flush_lock: Notification flushing lock
-+ */
-+struct kdbus_bus {
-+ struct kdbus_node node;
-+
-+ /* static */
-+ u64 id;
-+ u64 bus_flags;
-+ u64 attach_flags_owner;
-+ u8 id128[16];
-+ struct kdbus_bloom_parameter bloom;
-+ struct kdbus_domain *domain;
-+ struct kdbus_user *creator;
-+ struct kdbus_meta_proc *creator_meta;
-+
-+ /* protected by own locks */
-+ atomic64_t last_message_id;
-+ struct kdbus_policy_db policy_db;
-+ struct kdbus_name_registry *name_registry;
-+
-+ /* protected by conn_rwlock */
-+ struct rw_semaphore conn_rwlock;
-+ DECLARE_HASHTABLE(conn_hash, 8);
-+ struct list_head monitors_list;
-+
-+ /* protected by notify_lock */
-+ struct list_head notify_list;
-+ spinlock_t notify_lock;
-+ struct mutex notify_flush_lock;
-+};
-+
-+struct kdbus_bus *kdbus_bus_ref(struct kdbus_bus *bus);
-+struct kdbus_bus *kdbus_bus_unref(struct kdbus_bus *bus);
-+
-+struct kdbus_conn *kdbus_bus_find_conn_by_id(struct kdbus_bus *bus, u64 id);
-+void kdbus_bus_broadcast(struct kdbus_bus *bus,
-+ struct kdbus_conn *conn_src,
-+ struct kdbus_staging *staging);
-+void kdbus_bus_eavesdrop(struct kdbus_bus *bus,
-+ struct kdbus_conn *conn_src,
-+ struct kdbus_staging *staging);
-+
-+struct kdbus_bus *kdbus_cmd_bus_make(struct kdbus_domain *domain,
-+ void __user *argp);
-+int kdbus_cmd_bus_creator_info(struct kdbus_conn *conn, void __user *argp);
-+
-+#endif
-diff --git a/ipc/kdbus/connection.c b/ipc/kdbus/connection.c
-new file mode 100644
-index 0000000..ef63d65
---- /dev/null
-+++ b/ipc/kdbus/connection.c
-@@ -0,0 +1,2227 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/audit.h>
-+#include <linux/file.h>
-+#include <linux/fs.h>
-+#include <linux/fs_struct.h>
-+#include <linux/hashtable.h>
-+#include <linux/idr.h>
-+#include <linux/init.h>
-+#include <linux/math64.h>
-+#include <linux/mm.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/path.h>
-+#include <linux/poll.h>
-+#include <linux/sched.h>
-+#include <linux/shmem_fs.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/syscalls.h>
-+#include <linux/uio.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "endpoint.h"
-+#include "handle.h"
-+#include "match.h"
-+#include "message.h"
-+#include "metadata.h"
-+#include "names.h"
-+#include "domain.h"
-+#include "item.h"
-+#include "notify.h"
-+#include "policy.h"
-+#include "pool.h"
-+#include "reply.h"
-+#include "util.h"
-+#include "queue.h"
-+
-+#define KDBUS_CONN_ACTIVE_BIAS (INT_MIN + 2)
-+#define KDBUS_CONN_ACTIVE_NEW (INT_MIN + 1)
-+
-+static struct kdbus_conn *kdbus_conn_new(struct kdbus_ep *ep,
-+ struct file *file,
-+ struct kdbus_cmd_hello *hello,
-+ const char *name,
-+ const struct kdbus_creds *creds,
-+ const struct kdbus_pids *pids,
-+ const char *seclabel,
-+ const char *conn_description)
-+{
-+#ifdef CONFIG_DEBUG_LOCK_ALLOC
-+ static struct lock_class_key __key;
-+#endif
-+ struct kdbus_pool_slice *slice = NULL;
-+ struct kdbus_bus *bus = ep->bus;
-+ struct kdbus_conn *conn;
-+ u64 attach_flags_send;
-+ u64 attach_flags_recv;
-+ u64 items_size = 0;
-+ bool is_policy_holder;
-+ bool is_activator;
-+ bool is_monitor;
-+ bool privileged;
-+ bool owner;
-+ struct kvec kvec;
-+ int ret;
-+
-+ struct {
-+ u64 size;
-+ u64 type;
-+ struct kdbus_bloom_parameter bloom;
-+ } bloom_item;
-+
-+ privileged = kdbus_ep_is_privileged(ep, file);
-+ owner = kdbus_ep_is_owner(ep, file);
-+
-+ is_monitor = hello->flags & KDBUS_HELLO_MONITOR;
-+ is_activator = hello->flags & KDBUS_HELLO_ACTIVATOR;
-+ is_policy_holder = hello->flags & KDBUS_HELLO_POLICY_HOLDER;
-+
-+ if (!hello->pool_size || !IS_ALIGNED(hello->pool_size, PAGE_SIZE))
-+ return ERR_PTR(-EINVAL);
-+ if (is_monitor + is_activator + is_policy_holder > 1)
-+ return ERR_PTR(-EINVAL);
-+ if (name && !is_activator && !is_policy_holder)
-+ return ERR_PTR(-EINVAL);
-+ if (!name && (is_activator || is_policy_holder))
-+ return ERR_PTR(-EINVAL);
-+ if (name && !kdbus_name_is_valid(name, true))
-+ return ERR_PTR(-EINVAL);
-+ if (is_monitor && ep->user)
-+ return ERR_PTR(-EOPNOTSUPP);
-+ if (!owner && (is_activator || is_policy_holder || is_monitor))
-+ return ERR_PTR(-EPERM);
-+ if (!owner && (creds || pids || seclabel))
-+ return ERR_PTR(-EPERM);
-+
-+ ret = kdbus_sanitize_attach_flags(hello->attach_flags_send,
-+ &attach_flags_send);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+
-+ ret = kdbus_sanitize_attach_flags(hello->attach_flags_recv,
-+ &attach_flags_recv);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+
-+ conn = kzalloc(sizeof(*conn), GFP_KERNEL);
-+ if (!conn)
-+ return ERR_PTR(-ENOMEM);
-+
-+ kref_init(&conn->kref);
-+ atomic_set(&conn->active, KDBUS_CONN_ACTIVE_NEW);
-+#ifdef CONFIG_DEBUG_LOCK_ALLOC
-+ lockdep_init_map(&conn->dep_map, "s_active", &__key, 0);
-+#endif
-+ mutex_init(&conn->lock);
-+ INIT_LIST_HEAD(&conn->names_list);
-+ INIT_LIST_HEAD(&conn->reply_list);
-+ atomic_set(&conn->request_count, 0);
-+ atomic_set(&conn->lost_count, 0);
-+ INIT_DELAYED_WORK(&conn->work, kdbus_reply_list_scan_work);
-+ conn->cred = get_cred(file->f_cred);
-+ conn->pid = get_pid(task_pid(current));
-+ get_fs_root(current->fs, &conn->root_path);
-+ init_waitqueue_head(&conn->wait);
-+ kdbus_queue_init(&conn->queue);
-+ conn->privileged = privileged;
-+ conn->owner = owner;
-+ conn->ep = kdbus_ep_ref(ep);
-+ conn->id = atomic64_inc_return(&bus->domain->last_id);
-+ conn->flags = hello->flags;
-+ atomic64_set(&conn->attach_flags_send, attach_flags_send);
-+ atomic64_set(&conn->attach_flags_recv, attach_flags_recv);
-+ INIT_LIST_HEAD(&conn->monitor_entry);
-+
-+ if (conn_description) {
-+ conn->description = kstrdup(conn_description, GFP_KERNEL);
-+ if (!conn->description) {
-+ ret = -ENOMEM;
-+ goto exit_unref;
-+ }
-+ }
-+
-+ conn->pool = kdbus_pool_new(conn->description, hello->pool_size);
-+ if (IS_ERR(conn->pool)) {
-+ ret = PTR_ERR(conn->pool);
-+ conn->pool = NULL;
-+ goto exit_unref;
-+ }
-+
-+ conn->match_db = kdbus_match_db_new();
-+ if (IS_ERR(conn->match_db)) {
-+ ret = PTR_ERR(conn->match_db);
-+ conn->match_db = NULL;
-+ goto exit_unref;
-+ }
-+
-+ /* return properties of this connection to the caller */
-+ hello->bus_flags = bus->bus_flags;
-+ hello->id = conn->id;
-+
-+ BUILD_BUG_ON(sizeof(bus->id128) != sizeof(hello->id128));
-+ memcpy(hello->id128, bus->id128, sizeof(hello->id128));
-+
-+ /* privileged processes can impersonate somebody else */
-+ if (creds || pids || seclabel) {
-+ conn->meta_fake = kdbus_meta_fake_new();
-+ if (IS_ERR(conn->meta_fake)) {
-+ ret = PTR_ERR(conn->meta_fake);
-+ conn->meta_fake = NULL;
-+ goto exit_unref;
-+ }
-+
-+ ret = kdbus_meta_fake_collect(conn->meta_fake,
-+ creds, pids, seclabel);
-+ if (ret < 0)
-+ goto exit_unref;
-+ } else {
-+ conn->meta_proc = kdbus_meta_proc_new();
-+ if (IS_ERR(conn->meta_proc)) {
-+ ret = PTR_ERR(conn->meta_proc);
-+ conn->meta_proc = NULL;
-+ goto exit_unref;
-+ }
-+
-+ ret = kdbus_meta_proc_collect(conn->meta_proc,
-+ KDBUS_ATTACH_CREDS |
-+ KDBUS_ATTACH_PIDS |
-+ KDBUS_ATTACH_AUXGROUPS |
-+ KDBUS_ATTACH_TID_COMM |
-+ KDBUS_ATTACH_PID_COMM |
-+ KDBUS_ATTACH_EXE |
-+ KDBUS_ATTACH_CMDLINE |
-+ KDBUS_ATTACH_CGROUP |
-+ KDBUS_ATTACH_CAPS |
-+ KDBUS_ATTACH_SECLABEL |
-+ KDBUS_ATTACH_AUDIT);
-+ if (ret < 0)
-+ goto exit_unref;
-+ }
-+
-+ /*
-+ * Account the connection against the current user (UID), or for
-+ * custom endpoints use the anonymous user assigned to the endpoint.
-+ * Note that limits are always accounted against the real UID, not
-+ * the effective UID (cred->user always points to the accounting of
-+ * cred->uid, not cred->euid).
-+ * In case the caller is privileged, we allow changing the accounting
-+ * to the faked user.
-+ */
-+ if (ep->user) {
-+ conn->user = kdbus_user_ref(ep->user);
-+ } else {
-+ kuid_t uid;
-+
-+ if (conn->meta_fake && uid_valid(conn->meta_fake->uid) &&
-+ conn->privileged)
-+ uid = conn->meta_fake->uid;
-+ else
-+ uid = conn->cred->uid;
-+
-+ conn->user = kdbus_user_lookup(ep->bus->domain, uid);
-+ if (IS_ERR(conn->user)) {
-+ ret = PTR_ERR(conn->user);
-+ conn->user = NULL;
-+ goto exit_unref;
-+ }
-+ }
-+
-+ if (atomic_inc_return(&conn->user->connections) > KDBUS_USER_MAX_CONN) {
-+ /* decremented by destructor as conn->user is valid */
-+ ret = -EMFILE;
-+ goto exit_unref;
-+ }
-+
-+ bloom_item.size = sizeof(bloom_item);
-+ bloom_item.type = KDBUS_ITEM_BLOOM_PARAMETER;
-+ bloom_item.bloom = bus->bloom;
-+ kdbus_kvec_set(&kvec, &bloom_item, bloom_item.size, &items_size);
-+
-+ slice = kdbus_pool_slice_alloc(conn->pool, items_size, false);
-+ if (IS_ERR(slice)) {
-+ ret = PTR_ERR(slice);
-+ slice = NULL;
-+ goto exit_unref;
-+ }
-+
-+ ret = kdbus_pool_slice_copy_kvec(slice, 0, &kvec, 1, items_size);
-+ if (ret < 0)
-+ goto exit_unref;
-+
-+ kdbus_pool_slice_publish(slice, &hello->offset, &hello->items_size);
-+ kdbus_pool_slice_release(slice);
-+
-+ return conn;
-+
-+exit_unref:
-+ kdbus_pool_slice_release(slice);
-+ kdbus_conn_unref(conn);
-+ return ERR_PTR(ret);
-+}
-+
-+static void __kdbus_conn_free(struct kref *kref)
-+{
-+ struct kdbus_conn *conn = container_of(kref, struct kdbus_conn, kref);
-+
-+ WARN_ON(kdbus_conn_active(conn));
-+ WARN_ON(delayed_work_pending(&conn->work));
-+ WARN_ON(!list_empty(&conn->queue.msg_list));
-+ WARN_ON(!list_empty(&conn->names_list));
-+ WARN_ON(!list_empty(&conn->reply_list));
-+
-+ if (conn->user) {
-+ atomic_dec(&conn->user->connections);
-+ kdbus_user_unref(conn->user);
-+ }
-+
-+ kdbus_meta_fake_free(conn->meta_fake);
-+ kdbus_meta_proc_unref(conn->meta_proc);
-+ kdbus_match_db_free(conn->match_db);
-+ kdbus_pool_free(conn->pool);
-+ kdbus_ep_unref(conn->ep);
-+ path_put(&conn->root_path);
-+ put_pid(conn->pid);
-+ put_cred(conn->cred);
-+ kfree(conn->description);
-+ kfree(conn->quota);
-+ kfree(conn);
-+}
-+
-+/**
-+ * kdbus_conn_ref() - take a connection reference
-+ * @conn: Connection, may be %NULL
-+ *
-+ * Return: the connection itself
-+ */
-+struct kdbus_conn *kdbus_conn_ref(struct kdbus_conn *conn)
-+{
-+ if (conn)
-+ kref_get(&conn->kref);
-+ return conn;
-+}
-+
-+/**
-+ * kdbus_conn_unref() - drop a connection reference
-+ * @conn: Connection (may be NULL)
-+ *
-+ * When the last reference is dropped, the connection's internal structure
-+ * is freed.
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_conn *kdbus_conn_unref(struct kdbus_conn *conn)
-+{
-+ if (conn)
-+ kref_put(&conn->kref, __kdbus_conn_free);
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_conn_active() - connection is not disconnected
-+ * @conn: Connection to check
-+ *
-+ * Return true if the connection was not disconnected, yet. Note that a
-+ * connection might be disconnected asynchronously, unless you hold the
-+ * connection lock. If that's not suitable for you, see kdbus_conn_acquire() to
-+ * suppress connection shutdown for a short period.
-+ *
-+ * Return: true if the connection is still active
-+ */
-+bool kdbus_conn_active(const struct kdbus_conn *conn)
-+{
-+ return atomic_read(&conn->active) >= 0;
-+}
-+
-+/**
-+ * kdbus_conn_acquire() - acquire an active connection reference
-+ * @conn: Connection
-+ *
-+ * Users can close a connection via KDBUS_BYEBYE (or by destroying the
-+ * endpoint/bus/...) at any time. Whenever this happens, we should deny any
-+ * user-visible action on this connection and signal ECONNRESET instead.
-+ * To avoid testing for connection availability everytime you take the
-+ * connection-lock, you can acquire a connection for short periods.
-+ *
-+ * By calling kdbus_conn_acquire(), you gain an "active reference" to the
-+ * connection. You must also hold a regular reference at any time! As long as
-+ * you hold the active-ref, the connection will not be shut down. However, if
-+ * the connection was shut down, you can never acquire an active-ref again.
-+ *
-+ * kdbus_conn_disconnect() disables the connection and then waits for all active
-+ * references to be dropped. It will also wake up any pending operation.
-+ * However, you must not sleep for an indefinite period while holding an
-+ * active-reference. Otherwise, kdbus_conn_disconnect() might stall. If you need
-+ * to sleep for an indefinite period, either release the reference and try to
-+ * acquire it again after waking up, or make kdbus_conn_disconnect() wake up
-+ * your wait-queue.
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_conn_acquire(struct kdbus_conn *conn)
-+{
-+ if (!atomic_inc_unless_negative(&conn->active))
-+ return -ECONNRESET;
-+
-+#ifdef CONFIG_DEBUG_LOCK_ALLOC
-+ rwsem_acquire_read(&conn->dep_map, 0, 1, _RET_IP_);
-+#endif
-+
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_conn_release() - release an active connection reference
-+ * @conn: Connection
-+ *
-+ * This releases an active reference that has been acquired via
-+ * kdbus_conn_acquire(). If the connection was already disabled and this is the
-+ * last active-ref that is dropped, the disconnect-waiter will be woken up and
-+ * properly close the connection.
-+ */
-+void kdbus_conn_release(struct kdbus_conn *conn)
-+{
-+ int v;
-+
-+ if (!conn)
-+ return;
-+
-+#ifdef CONFIG_DEBUG_LOCK_ALLOC
-+ rwsem_release(&conn->dep_map, 1, _RET_IP_);
-+#endif
-+
-+ v = atomic_dec_return(&conn->active);
-+ if (v != KDBUS_CONN_ACTIVE_BIAS)
-+ return;
-+
-+ wake_up_all(&conn->wait);
-+}
-+
-+static int kdbus_conn_connect(struct kdbus_conn *conn, const char *name)
-+{
-+ struct kdbus_ep *ep = conn->ep;
-+ struct kdbus_bus *bus = ep->bus;
-+ int ret;
-+
-+ if (WARN_ON(atomic_read(&conn->active) != KDBUS_CONN_ACTIVE_NEW))
-+ return -EALREADY;
-+
-+ /* make sure the ep-node is active while we add our connection */
-+ if (!kdbus_node_acquire(&ep->node))
-+ return -ESHUTDOWN;
-+
-+ /* lock order: domain -> bus -> ep -> names -> conn */
-+ mutex_lock(&ep->lock);
-+ down_write(&bus->conn_rwlock);
-+
-+ /* link into monitor list */
-+ if (kdbus_conn_is_monitor(conn))
-+ list_add_tail(&conn->monitor_entry, &bus->monitors_list);
-+
-+ /* link into bus and endpoint */
-+ list_add_tail(&conn->ep_entry, &ep->conn_list);
-+ hash_add(bus->conn_hash, &conn->hentry, conn->id);
-+
-+ /* enable lookups and acquire active ref */
-+ atomic_set(&conn->active, 1);
-+#ifdef CONFIG_DEBUG_LOCK_ALLOC
-+ rwsem_acquire_read(&conn->dep_map, 0, 1, _RET_IP_);
-+#endif
-+
-+ up_write(&bus->conn_rwlock);
-+ mutex_unlock(&ep->lock);
-+
-+ kdbus_node_release(&ep->node);
-+
-+ /*
-+ * Notify subscribers about the new active connection, unless it is
-+ * a monitor. Monitors are invisible on the bus, can't be addressed
-+ * directly, and won't cause any notifications.
-+ */
-+ if (!kdbus_conn_is_monitor(conn)) {
-+ ret = kdbus_notify_id_change(bus, KDBUS_ITEM_ID_ADD,
-+ conn->id, conn->flags);
-+ if (ret < 0)
-+ goto exit_disconnect;
-+ }
-+
-+ if (kdbus_conn_is_activator(conn)) {
-+ u64 flags = KDBUS_NAME_ACTIVATOR;
-+
-+ if (WARN_ON(!name)) {
-+ ret = -EINVAL;
-+ goto exit_disconnect;
-+ }
-+
-+ ret = kdbus_name_acquire(bus->name_registry, conn, name,
-+ flags, NULL);
-+ if (ret < 0)
-+ goto exit_disconnect;
-+ }
-+
-+ kdbus_conn_release(conn);
-+ kdbus_notify_flush(bus);
-+ return 0;
-+
-+exit_disconnect:
-+ kdbus_conn_release(conn);
-+ kdbus_conn_disconnect(conn, false);
-+ return ret;
-+}
-+
-+/**
-+ * kdbus_conn_disconnect() - disconnect a connection
-+ * @conn: The connection to disconnect
-+ * @ensure_queue_empty: Flag to indicate if the call should fail in
-+ * case the connection's message list is not
-+ * empty
-+ *
-+ * If @ensure_msg_list_empty is true, and the connection has pending messages,
-+ * -EBUSY is returned.
-+ *
-+ * Return: 0 on success, negative errno on failure
-+ */
-+int kdbus_conn_disconnect(struct kdbus_conn *conn, bool ensure_queue_empty)
-+{
-+ struct kdbus_queue_entry *entry, *tmp;
-+ struct kdbus_bus *bus = conn->ep->bus;
-+ struct kdbus_reply *r, *r_tmp;
-+ struct kdbus_conn *c;
-+ int i, v;
-+
-+ mutex_lock(&conn->lock);
-+ v = atomic_read(&conn->active);
-+ if (v == KDBUS_CONN_ACTIVE_NEW) {
-+ /* was never connected */
-+ mutex_unlock(&conn->lock);
-+ return 0;
-+ }
-+ if (v < 0) {
-+ /* already dead */
-+ mutex_unlock(&conn->lock);
-+ return -ECONNRESET;
-+ }
-+ if (ensure_queue_empty && !list_empty(&conn->queue.msg_list)) {
-+ /* still busy */
-+ mutex_unlock(&conn->lock);
-+ return -EBUSY;
-+ }
-+
-+ atomic_add(KDBUS_CONN_ACTIVE_BIAS, &conn->active);
-+ mutex_unlock(&conn->lock);
-+
-+ wake_up_interruptible(&conn->wait);
-+
-+#ifdef CONFIG_DEBUG_LOCK_ALLOC
-+ rwsem_acquire(&conn->dep_map, 0, 0, _RET_IP_);
-+ if (atomic_read(&conn->active) != KDBUS_CONN_ACTIVE_BIAS)
-+ lock_contended(&conn->dep_map, _RET_IP_);
-+#endif
-+
-+ wait_event(conn->wait,
-+ atomic_read(&conn->active) == KDBUS_CONN_ACTIVE_BIAS);
-+
-+#ifdef CONFIG_DEBUG_LOCK_ALLOC
-+ lock_acquired(&conn->dep_map, _RET_IP_);
-+ rwsem_release(&conn->dep_map, 1, _RET_IP_);
-+#endif
-+
-+ cancel_delayed_work_sync(&conn->work);
-+ kdbus_policy_remove_owner(&conn->ep->bus->policy_db, conn);
-+
-+ /* lock order: domain -> bus -> ep -> names -> conn */
-+ mutex_lock(&conn->ep->lock);
-+ down_write(&bus->conn_rwlock);
-+
-+ /* remove from bus and endpoint */
-+ hash_del(&conn->hentry);
-+ list_del(&conn->monitor_entry);
-+ list_del(&conn->ep_entry);
-+
-+ up_write(&bus->conn_rwlock);
-+ mutex_unlock(&conn->ep->lock);
-+
-+ /*
-+ * Remove all names associated with this connection; this possibly
-+ * moves queued messages back to the activator connection.
-+ */
-+ kdbus_name_release_all(bus->name_registry, conn);
-+
-+ /* if we die while other connections wait for our reply, notify them */
-+ mutex_lock(&conn->lock);
-+ list_for_each_entry_safe(entry, tmp, &conn->queue.msg_list, entry) {
-+ if (entry->reply)
-+ kdbus_notify_reply_dead(bus,
-+ entry->reply->reply_dst->id,
-+ entry->reply->cookie);
-+ kdbus_queue_entry_free(entry);
-+ }
-+
-+ list_for_each_entry_safe(r, r_tmp, &conn->reply_list, entry)
-+ kdbus_reply_unlink(r);
-+ mutex_unlock(&conn->lock);
-+
-+ /* lock order: domain -> bus -> ep -> names -> conn */
-+ down_read(&bus->conn_rwlock);
-+ hash_for_each(bus->conn_hash, i, c, hentry) {
-+ mutex_lock(&c->lock);
-+ list_for_each_entry_safe(r, r_tmp, &c->reply_list, entry) {
-+ if (r->reply_src != conn)
-+ continue;
-+
-+ if (r->sync)
-+ kdbus_sync_reply_wakeup(r, -EPIPE);
-+ else
-+ /* send a 'connection dead' notification */
-+ kdbus_notify_reply_dead(bus, c->id, r->cookie);
-+
-+ kdbus_reply_unlink(r);
-+ }
-+ mutex_unlock(&c->lock);
-+ }
-+ up_read(&bus->conn_rwlock);
-+
-+ if (!kdbus_conn_is_monitor(conn))
-+ kdbus_notify_id_change(bus, KDBUS_ITEM_ID_REMOVE,
-+ conn->id, conn->flags);
-+
-+ kdbus_notify_flush(bus);
-+
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_conn_has_name() - check if a connection owns a name
-+ * @conn: Connection
-+ * @name: Well-know name to check for
-+ *
-+ * The caller must hold the registry lock of conn->ep->bus.
-+ *
-+ * Return: true if the name is currently owned by the connection
-+ */
-+bool kdbus_conn_has_name(struct kdbus_conn *conn, const char *name)
-+{
-+ struct kdbus_name_owner *owner;
-+
-+ lockdep_assert_held(&conn->ep->bus->name_registry->rwlock);
-+
-+ list_for_each_entry(owner, &conn->names_list, conn_entry)
-+ if (!(owner->flags & KDBUS_NAME_IN_QUEUE) &&
-+ !strcmp(name, owner->name->name))
-+ return true;
-+
-+ return false;
-+}
-+
-+struct kdbus_quota {
-+ u32 memory;
-+ u16 msgs;
-+ u8 fds;
-+};
-+
-+/**
-+ * kdbus_conn_quota_inc() - increase quota accounting
-+ * @c: connection owning the quota tracking
-+ * @u: user to account for (or NULL for kernel accounting)
-+ * @memory: size of memory to account for
-+ * @fds: number of FDs to account for
-+ *
-+ * This call manages the quotas on resource @c. That is, it's used if other
-+ * users want to use the resources of connection @c, which so far only concerns
-+ * the receive queue of the destination.
-+ *
-+ * This increases the quota-accounting for user @u by @memory bytes and @fds
-+ * file descriptors. If the user has already reached the quota limits, this call
-+ * will not do any accounting but return a negative error code indicating the
-+ * failure.
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_conn_quota_inc(struct kdbus_conn *c, struct kdbus_user *u,
-+ size_t memory, size_t fds)
-+{
-+ struct kdbus_quota *quota;
-+ size_t available, accounted;
-+ unsigned int id;
-+
-+ /*
-+ * Pool Layout:
-+ * 50% of a pool is always owned by the connection. It is reserved for
-+ * kernel queries, handling received messages and other tasks that are
-+ * under control of the pool owner. The other 50% of the pool are used
-+ * as incoming queue.
-+ * As we optionally support user-space based policies, we need fair
-+ * allocation schemes. Furthermore, resource utilization should be
-+ * maximized, so only minimal resources stay reserved. However, we need
-+ * to adapt to a dynamic number of users, as we cannot know how many
-+ * users will talk to a connection. Therefore, the current allocation
-+ * works like this:
-+ * We limit the number of bytes in a destination's pool per sending
-+ * user. The space available for a user is 33% of the unused pool space
-+ * (whereas the space used by the user itself is also treated as
-+ * 'unused'). This way, we favor users coming first, but keep enough
-+ * pool space available for any following users. Given that messages are
-+ * dequeued in FIFO order, this should balance nicely if the number of
-+ * users grows. At the same time, this algorithm guarantees that the
-+ * space available to a connection is reduced dynamically, the more
-+ * concurrent users talk to a connection.
-+ */
-+
-+ /* per user-accounting is expensive, so we keep state small */
-+ BUILD_BUG_ON(sizeof(quota->memory) != 4);
-+ BUILD_BUG_ON(sizeof(quota->msgs) != 2);
-+ BUILD_BUG_ON(sizeof(quota->fds) != 1);
-+ BUILD_BUG_ON(KDBUS_CONN_MAX_MSGS > U16_MAX);
-+ BUILD_BUG_ON(KDBUS_CONN_MAX_FDS_PER_USER > U8_MAX);
-+
-+ id = u ? u->id : KDBUS_USER_KERNEL_ID;
-+ if (id >= c->n_quota) {
-+ unsigned int users;
-+
-+ users = max(KDBUS_ALIGN8(id) + 8, id);
-+ quota = krealloc(c->quota, users * sizeof(*quota),
-+ GFP_KERNEL | __GFP_ZERO);
-+ if (!quota)
-+ return -ENOMEM;
-+
-+ c->n_quota = users;
-+ c->quota = quota;
-+ }
-+
-+ quota = &c->quota[id];
-+ kdbus_pool_accounted(c->pool, &available, &accounted);
-+
-+ /* half the pool is _always_ reserved for the pool owner */
-+ available /= 2;
-+
-+ /*
-+ * Pool owner slices are un-accounted slices; they can claim more
-+ * than 50% of the queue. However, the slices we're dealing with here
-+ * belong to the incoming queue, hence they are 'accounted' slices
-+ * to which the 50%-limit applies.
-+ */
-+ if (available < accounted)
-+ return -ENOBUFS;
-+
-+ /* 1/3 of the remaining space (including your own memory) */
-+ available = (available - accounted + quota->memory) / 3;
-+
-+ if (available < quota->memory ||
-+ available - quota->memory < memory ||
-+ quota->memory + memory > U32_MAX)
-+ return -ENOBUFS;
-+ if (quota->msgs >= KDBUS_CONN_MAX_MSGS)
-+ return -ENOBUFS;
-+ if (quota->fds + fds < quota->fds ||
-+ quota->fds + fds > KDBUS_CONN_MAX_FDS_PER_USER)
-+ return -EMFILE;
-+
-+ quota->memory += memory;
-+ quota->fds += fds;
-+ ++quota->msgs;
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_conn_quota_dec() - decrease quota accounting
-+ * @c: connection owning the quota tracking
-+ * @u: user which was accounted for (or NULL for kernel accounting)
-+ * @memory: size of memory which was accounted for
-+ * @fds: number of FDs which were accounted for
-+ *
-+ * This does the reverse of kdbus_conn_quota_inc(). You have to release any
-+ * accounted resources that you called kdbus_conn_quota_inc() for. However, you
-+ * must not call kdbus_conn_quota_dec() if the accounting failed (that is,
-+ * kdbus_conn_quota_inc() failed).
-+ */
-+void kdbus_conn_quota_dec(struct kdbus_conn *c, struct kdbus_user *u,
-+ size_t memory, size_t fds)
-+{
-+ struct kdbus_quota *quota;
-+ unsigned int id;
-+
-+ id = u ? u->id : KDBUS_USER_KERNEL_ID;
-+ if (WARN_ON(id >= c->n_quota))
-+ return;
-+
-+ quota = &c->quota[id];
-+
-+ if (!WARN_ON(quota->msgs == 0))
-+ --quota->msgs;
-+ if (!WARN_ON(quota->memory < memory))
-+ quota->memory -= memory;
-+ if (!WARN_ON(quota->fds < fds))
-+ quota->fds -= fds;
-+}
-+
-+/**
-+ * kdbus_conn_lost_message() - handle lost messages
-+ * @c: connection that lost a message
-+ *
-+ * kdbus is reliable. That means, we try hard to never lose messages. However,
-+ * memory is limited, so we cannot rely on transmissions to never fail.
-+ * Therefore, we use quota-limits to let callers know if their unicast message
-+ * cannot be transmitted to a peer. This works fine for unicasts, but for
-+ * broadcasts we cannot make the caller handle the transmission failure.
-+ * Instead, we must let the destination know that it couldn't receive a
-+ * broadcast.
-+ * As this is an unlikely scenario, we keep it simple. A single lost-counter
-+ * remembers the number of lost messages since the last call to RECV. The next
-+ * message retrieval will notify the connection that it lost messages since the
-+ * last message retrieval and thus should resync its state.
-+ */
-+void kdbus_conn_lost_message(struct kdbus_conn *c)
-+{
-+ if (atomic_inc_return(&c->lost_count) == 1)
-+ wake_up_interruptible(&c->wait);
-+}
-+
-+/* Callers should take the conn_dst lock */
-+static struct kdbus_queue_entry *
-+kdbus_conn_entry_make(struct kdbus_conn *conn_src,
-+ struct kdbus_conn *conn_dst,
-+ struct kdbus_staging *staging)
-+{
-+ /* The remote connection was disconnected */
-+ if (!kdbus_conn_active(conn_dst))
-+ return ERR_PTR(-ECONNRESET);
-+
-+ /*
-+ * If the connection does not accept file descriptors but the message
-+ * has some attached, refuse it.
-+ *
-+ * If this is a monitor connection, accept the message. In that
-+ * case, all file descriptors will be set to -1 at receive time.
-+ */
-+ if (!kdbus_conn_is_monitor(conn_dst) &&
-+ !(conn_dst->flags & KDBUS_HELLO_ACCEPT_FD) &&
-+ staging->gaps && staging->gaps->n_fds > 0)
-+ return ERR_PTR(-ECOMM);
-+
-+ return kdbus_queue_entry_new(conn_src, conn_dst, staging);
-+}
-+
-+/*
-+ * Synchronously responding to a message, allocate a queue entry
-+ * and attach it to the reply tracking object.
-+ * The connection's queue will never get to see it.
-+ */
-+static int kdbus_conn_entry_sync_attach(struct kdbus_conn *conn_dst,
-+ struct kdbus_staging *staging,
-+ struct kdbus_reply *reply_wake)
-+{
-+ struct kdbus_queue_entry *entry;
-+ int remote_ret, ret = 0;
-+
-+ mutex_lock(&reply_wake->reply_dst->lock);
-+
-+ /*
-+ * If we are still waiting then proceed, allocate a queue
-+ * entry and attach it to the reply object
-+ */
-+ if (reply_wake->waiting) {
-+ entry = kdbus_conn_entry_make(reply_wake->reply_src, conn_dst,
-+ staging);
-+ if (IS_ERR(entry))
-+ ret = PTR_ERR(entry);
-+ else
-+ /* Attach the entry to the reply object */
-+ reply_wake->queue_entry = entry;
-+ } else {
-+ ret = -ECONNRESET;
-+ }
-+
-+ /*
-+ * Update the reply object and wake up remote peer only
-+ * on appropriate return codes
-+ *
-+ * * -ECOMM: if the replying connection failed with -ECOMM
-+ * then wakeup remote peer with -EREMOTEIO
-+ *
-+ * We do this to differenciate between -ECOMM errors
-+ * from the original sender perspective:
-+ * -ECOMM error during the sync send and
-+ * -ECOMM error during the sync reply, this last
-+ * one is rewritten to -EREMOTEIO
-+ *
-+ * * Wake up on all other return codes.
-+ */
-+ remote_ret = ret;
-+
-+ if (ret == -ECOMM)
-+ remote_ret = -EREMOTEIO;
-+
-+ kdbus_sync_reply_wakeup(reply_wake, remote_ret);
-+ kdbus_reply_unlink(reply_wake);
-+ mutex_unlock(&reply_wake->reply_dst->lock);
-+
-+ return ret;
-+}
-+
-+/**
-+ * kdbus_conn_entry_insert() - enqueue a message into the receiver's pool
-+ * @conn_src: The sending connection
-+ * @conn_dst: The connection to queue into
-+ * @staging: Message to send
-+ * @reply: The reply tracker to attach to the queue entry
-+ * @name: Destination name this msg is sent to, or NULL
-+ *
-+ * Return: 0 on success. negative error otherwise.
-+ */
-+int kdbus_conn_entry_insert(struct kdbus_conn *conn_src,
-+ struct kdbus_conn *conn_dst,
-+ struct kdbus_staging *staging,
-+ struct kdbus_reply *reply,
-+ const struct kdbus_name_entry *name)
-+{
-+ struct kdbus_queue_entry *entry;
-+ int ret;
-+
-+ kdbus_conn_lock2(conn_src, conn_dst);
-+
-+ entry = kdbus_conn_entry_make(conn_src, conn_dst, staging);
-+ if (IS_ERR(entry)) {
-+ ret = PTR_ERR(entry);
-+ goto exit_unlock;
-+ }
-+
-+ if (reply) {
-+ kdbus_reply_link(reply);
-+ if (!reply->sync)
-+ schedule_delayed_work(&conn_src->work, 0);
-+ }
-+
-+ /*
-+ * Record the sequence number of the registered name; it will
-+ * be remembered by the queue, in case messages addressed to a
-+ * name need to be moved from or to an activator.
-+ */
-+ if (name)
-+ entry->dst_name_id = name->name_id;
-+
-+ kdbus_queue_entry_enqueue(entry, reply);
-+ wake_up_interruptible(&conn_dst->wait);
-+
-+ ret = 0;
-+
-+exit_unlock:
-+ kdbus_conn_unlock2(conn_src, conn_dst);
-+ return ret;
-+}
-+
-+static int kdbus_conn_wait_reply(struct kdbus_conn *conn_src,
-+ struct kdbus_cmd_send *cmd_send,
-+ struct file *ioctl_file,
-+ struct file *cancel_fd,
-+ struct kdbus_reply *reply_wait,
-+ ktime_t expire)
-+{
-+ struct kdbus_queue_entry *entry;
-+ struct poll_wqueues pwq = {};
-+ int ret;
-+
-+ if (WARN_ON(!reply_wait))
-+ return -EIO;
-+
-+ /*
-+ * Block until the reply arrives. reply_wait is left untouched
-+ * by the timeout scans that might be conducted for other,
-+ * asynchronous replies of conn_src.
-+ */
-+
-+ poll_initwait(&pwq);
-+ poll_wait(ioctl_file, &conn_src->wait, &pwq.pt);
-+
-+ for (;;) {
-+ /*
-+ * Any of the following conditions will stop our synchronously
-+ * blocking SEND command:
-+ *
-+ * a) The origin sender closed its connection
-+ * b) The remote peer answered, setting reply_wait->waiting = 0
-+ * c) The cancel FD was written to
-+ * d) A signal was received
-+ * e) The specified timeout was reached, and none of the above
-+ * conditions kicked in.
-+ */
-+
-+ /*
-+ * We have already acquired an active reference when
-+ * entering here, but another thread may call
-+ * KDBUS_CMD_BYEBYE which does not acquire an active
-+ * reference, therefore kdbus_conn_disconnect() will
-+ * not wait for us.
-+ */
-+ if (!kdbus_conn_active(conn_src)) {
-+ ret = -ECONNRESET;
-+ break;
-+ }
-+
-+ /*
-+ * After the replying peer unset the waiting variable
-+ * it will wake up us.
-+ */
-+ if (!reply_wait->waiting) {
-+ ret = reply_wait->err;
-+ break;
-+ }
-+
-+ if (cancel_fd) {
-+ unsigned int r;
-+
-+ r = cancel_fd->f_op->poll(cancel_fd, &pwq.pt);
-+ if (r & POLLIN) {
-+ ret = -ECANCELED;
-+ break;
-+ }
-+ }
-+
-+ if (signal_pending(current)) {
-+ ret = -EINTR;
-+ break;
-+ }
-+
-+ if (!poll_schedule_timeout(&pwq, TASK_INTERRUPTIBLE,
-+ &expire, 0)) {
-+ ret = -ETIMEDOUT;
-+ break;
-+ }
-+
-+ /*
-+ * Reset the poll worker func, so the waitqueues are not
-+ * added to the poll table again. We just reuse what we've
-+ * collected earlier for further iterations.
-+ */
-+ init_poll_funcptr(&pwq.pt, NULL);
-+ }
-+
-+ poll_freewait(&pwq);
-+
-+ if (ret == -EINTR) {
-+ /*
-+ * Interrupted system call. Unref the reply object, and pass
-+ * the return value down the chain. Mark the reply as
-+ * interrupted, so the cleanup work can remove it, but do not
-+ * unlink it from the list. Once the syscall restarts, we'll
-+ * pick it up and wait on it again.
-+ */
-+ mutex_lock(&conn_src->lock);
-+ reply_wait->interrupted = true;
-+ schedule_delayed_work(&conn_src->work, 0);
-+ mutex_unlock(&conn_src->lock);
-+
-+ return -ERESTARTSYS;
-+ }
-+
-+ mutex_lock(&conn_src->lock);
-+ reply_wait->waiting = false;
-+ entry = reply_wait->queue_entry;
-+ if (entry) {
-+ ret = kdbus_queue_entry_install(entry,
-+ &cmd_send->reply.return_flags,
-+ true);
-+ kdbus_pool_slice_publish(entry->slice, &cmd_send->reply.offset,
-+ &cmd_send->reply.msg_size);
-+ kdbus_queue_entry_free(entry);
-+ }
-+ kdbus_reply_unlink(reply_wait);
-+ mutex_unlock(&conn_src->lock);
-+
-+ return ret;
-+}
-+
-+static int kdbus_pin_dst(struct kdbus_bus *bus,
-+ struct kdbus_staging *staging,
-+ struct kdbus_name_entry **out_name,
-+ struct kdbus_conn **out_dst)
-+{
-+ const struct kdbus_msg *msg = staging->msg;
-+ struct kdbus_name_owner *owner = NULL;
-+ struct kdbus_name_entry *name = NULL;
-+ struct kdbus_conn *dst = NULL;
-+ int ret;
-+
-+ lockdep_assert_held(&bus->name_registry->rwlock);
-+
-+ if (!staging->dst_name) {
-+ dst = kdbus_bus_find_conn_by_id(bus, msg->dst_id);
-+ if (!dst)
-+ return -ENXIO;
-+
-+ if (!kdbus_conn_is_ordinary(dst)) {
-+ ret = -ENXIO;
-+ goto error;
-+ }
-+ } else {
-+ name = kdbus_name_lookup_unlocked(bus->name_registry,
-+ staging->dst_name);
-+ if (name)
-+ owner = kdbus_name_get_owner(name);
-+ if (!owner)
-+ return -ESRCH;
-+
-+ /*
-+ * If both a name and a connection ID are given as destination
-+ * of a message, check that the currently owning connection of
-+ * the name matches the specified ID.
-+ * This way, we allow userspace to send the message to a
-+ * specific connection by ID only if the connection currently
-+ * owns the given name.
-+ */
-+ if (msg->dst_id != KDBUS_DST_ID_NAME &&
-+ msg->dst_id != owner->conn->id)
-+ return -EREMCHG;
-+
-+ if ((msg->flags & KDBUS_MSG_NO_AUTO_START) &&
-+ kdbus_conn_is_activator(owner->conn))
-+ return -EADDRNOTAVAIL;
-+
-+ dst = kdbus_conn_ref(owner->conn);
-+ }
-+
-+ *out_name = name;
-+ *out_dst = dst;
-+ return 0;
-+
-+error:
-+ kdbus_conn_unref(dst);
-+ return ret;
-+}
-+
-+static int kdbus_conn_reply(struct kdbus_conn *src,
-+ struct kdbus_staging *staging)
-+{
-+ const struct kdbus_msg *msg = staging->msg;
-+ struct kdbus_name_entry *name = NULL;
-+ struct kdbus_reply *reply, *wake = NULL;
-+ struct kdbus_conn *dst = NULL;
-+ struct kdbus_bus *bus = src->ep->bus;
-+ int ret;
-+
-+ if (WARN_ON(msg->dst_id == KDBUS_DST_ID_BROADCAST) ||
-+ WARN_ON(msg->flags & KDBUS_MSG_EXPECT_REPLY) ||
-+ WARN_ON(msg->flags & KDBUS_MSG_SIGNAL))
-+ return -EINVAL;
-+
-+ /* name-registry must be locked for lookup *and* collecting data */
-+ down_read(&bus->name_registry->rwlock);
-+
-+ /* find and pin destination */
-+
-+ ret = kdbus_pin_dst(bus, staging, &name, &dst);
-+ if (ret < 0)
-+ goto exit;
-+
-+ mutex_lock(&dst->lock);
-+ reply = kdbus_reply_find(src, dst, msg->cookie_reply);
-+ if (reply) {
-+ if (reply->sync)
-+ wake = kdbus_reply_ref(reply);
-+ kdbus_reply_unlink(reply);
-+ }
-+ mutex_unlock(&dst->lock);
-+
-+ if (!reply) {
-+ ret = -EBADSLT;
-+ goto exit;
-+ }
-+
-+ /* send message */
-+
-+ kdbus_bus_eavesdrop(bus, src, staging);
-+
-+ if (wake)
-+ ret = kdbus_conn_entry_sync_attach(dst, staging, wake);
-+ else
-+ ret = kdbus_conn_entry_insert(src, dst, staging, NULL, name);
-+
-+exit:
-+ up_read(&bus->name_registry->rwlock);
-+ kdbus_reply_unref(wake);
-+ kdbus_conn_unref(dst);
-+ return ret;
-+}
-+
-+static struct kdbus_reply *kdbus_conn_call(struct kdbus_conn *src,
-+ struct kdbus_staging *staging,
-+ ktime_t exp)
-+{
-+ const struct kdbus_msg *msg = staging->msg;
-+ struct kdbus_name_entry *name = NULL;
-+ struct kdbus_reply *wait = NULL;
-+ struct kdbus_conn *dst = NULL;
-+ struct kdbus_bus *bus = src->ep->bus;
-+ int ret;
-+
-+ if (WARN_ON(msg->dst_id == KDBUS_DST_ID_BROADCAST) ||
-+ WARN_ON(msg->flags & KDBUS_MSG_SIGNAL) ||
-+ WARN_ON(!(msg->flags & KDBUS_MSG_EXPECT_REPLY)))
-+ return ERR_PTR(-EINVAL);
-+
-+ /* resume previous wait-context, if available */
-+
-+ mutex_lock(&src->lock);
-+ wait = kdbus_reply_find(NULL, src, msg->cookie);
-+ if (wait) {
-+ if (wait->interrupted) {
-+ kdbus_reply_ref(wait);
-+ wait->interrupted = false;
-+ } else {
-+ wait = NULL;
-+ }
-+ }
-+ mutex_unlock(&src->lock);
-+
-+ if (wait)
-+ return wait;
-+
-+ if (ktime_compare(ktime_get(), exp) >= 0)
-+ return ERR_PTR(-ETIMEDOUT);
-+
-+ /* name-registry must be locked for lookup *and* collecting data */
-+ down_read(&bus->name_registry->rwlock);
-+
-+ /* find and pin destination */
-+
-+ ret = kdbus_pin_dst(bus, staging, &name, &dst);
-+ if (ret < 0)
-+ goto exit;
-+
-+ if (!kdbus_conn_policy_talk(src, current_cred(), dst)) {
-+ ret = -EPERM;
-+ goto exit;
-+ }
-+
-+ wait = kdbus_reply_new(dst, src, msg, name, true);
-+ if (IS_ERR(wait)) {
-+ ret = PTR_ERR(wait);
-+ wait = NULL;
-+ goto exit;
-+ }
-+
-+ /* send message */
-+
-+ kdbus_bus_eavesdrop(bus, src, staging);
-+
-+ ret = kdbus_conn_entry_insert(src, dst, staging, wait, name);
-+ if (ret < 0)
-+ goto exit;
-+
-+ ret = 0;
-+
-+exit:
-+ up_read(&bus->name_registry->rwlock);
-+ if (ret < 0) {
-+ kdbus_reply_unref(wait);
-+ wait = ERR_PTR(ret);
-+ }
-+ kdbus_conn_unref(dst);
-+ return wait;
-+}
-+
-+static int kdbus_conn_unicast(struct kdbus_conn *src,
-+ struct kdbus_staging *staging)
-+{
-+ const struct kdbus_msg *msg = staging->msg;
-+ struct kdbus_name_entry *name = NULL;
-+ struct kdbus_reply *wait = NULL;
-+ struct kdbus_conn *dst = NULL;
-+ struct kdbus_bus *bus = src->ep->bus;
-+ bool is_signal = (msg->flags & KDBUS_MSG_SIGNAL);
-+ int ret = 0;
-+
-+ if (WARN_ON(msg->dst_id == KDBUS_DST_ID_BROADCAST) ||
-+ WARN_ON(!(msg->flags & KDBUS_MSG_EXPECT_REPLY) &&
-+ msg->cookie_reply != 0))
-+ return -EINVAL;
-+
-+ /* name-registry must be locked for lookup *and* collecting data */
-+ down_read(&bus->name_registry->rwlock);
-+
-+ /* find and pin destination */
-+
-+ ret = kdbus_pin_dst(bus, staging, &name, &dst);
-+ if (ret < 0)
-+ goto exit;
-+
-+ if (is_signal) {
-+ /* like broadcasts we eavesdrop even if the msg is dropped */
-+ kdbus_bus_eavesdrop(bus, src, staging);
-+
-+ /* drop silently if peer is not interested or not privileged */
-+ if (!kdbus_match_db_match_msg(dst->match_db, src, staging) ||
-+ !kdbus_conn_policy_talk(dst, NULL, src))
-+ goto exit;
-+ } else if (!kdbus_conn_policy_talk(src, current_cred(), dst)) {
-+ ret = -EPERM;
-+ goto exit;
-+ } else if (msg->flags & KDBUS_MSG_EXPECT_REPLY) {
-+ wait = kdbus_reply_new(dst, src, msg, name, false);
-+ if (IS_ERR(wait)) {
-+ ret = PTR_ERR(wait);
-+ wait = NULL;
-+ goto exit;
-+ }
-+ }
-+
-+ /* send message */
-+
-+ if (!is_signal)
-+ kdbus_bus_eavesdrop(bus, src, staging);
-+
-+ ret = kdbus_conn_entry_insert(src, dst, staging, wait, name);
-+ if (ret < 0 && !is_signal)
-+ goto exit;
-+
-+ /* signals are treated like broadcasts, recv-errors are ignored */
-+ ret = 0;
-+
-+exit:
-+ up_read(&bus->name_registry->rwlock);
-+ kdbus_reply_unref(wait);
-+ kdbus_conn_unref(dst);
-+ return ret;
-+}
-+
-+/**
-+ * kdbus_conn_move_messages() - move messages from one connection to another
-+ * @conn_dst: Connection to copy to
-+ * @conn_src: Connection to copy from
-+ * @name_id: Filter for the sequence number of the registered
-+ * name, 0 means no filtering.
-+ *
-+ * Move all messages from one connection to another. This is used when
-+ * an implementer connection is taking over/giving back a well-known name
-+ * from/to an activator connection.
-+ */
-+void kdbus_conn_move_messages(struct kdbus_conn *conn_dst,
-+ struct kdbus_conn *conn_src,
-+ u64 name_id)
-+{
-+ struct kdbus_queue_entry *e, *e_tmp;
-+ struct kdbus_reply *r, *r_tmp;
-+ struct kdbus_bus *bus;
-+ struct kdbus_conn *c;
-+ LIST_HEAD(msg_list);
-+ int i, ret = 0;
-+
-+ if (WARN_ON(conn_src == conn_dst))
-+ return;
-+
-+ bus = conn_src->ep->bus;
-+
-+ /* lock order: domain -> bus -> ep -> names -> conn */
-+ down_read(&bus->conn_rwlock);
-+ hash_for_each(bus->conn_hash, i, c, hentry) {
-+ if (c == conn_src || c == conn_dst)
-+ continue;
-+
-+ mutex_lock(&c->lock);
-+ list_for_each_entry_safe(r, r_tmp, &c->reply_list, entry) {
-+ if (r->reply_src != conn_src)
-+ continue;
-+
-+ /* filter messages for a specific name */
-+ if (name_id > 0 && r->name_id != name_id)
-+ continue;
-+
-+ kdbus_conn_unref(r->reply_src);
-+ r->reply_src = kdbus_conn_ref(conn_dst);
-+ }
-+ mutex_unlock(&c->lock);
-+ }
-+ up_read(&bus->conn_rwlock);
-+
-+ kdbus_conn_lock2(conn_src, conn_dst);
-+ list_for_each_entry_safe(e, e_tmp, &conn_src->queue.msg_list, entry) {
-+ /* filter messages for a specific name */
-+ if (name_id > 0 && e->dst_name_id != name_id)
-+ continue;
-+
-+ if (!(conn_dst->flags & KDBUS_HELLO_ACCEPT_FD) &&
-+ e->gaps && e->gaps->n_fds > 0) {
-+ kdbus_conn_lost_message(conn_dst);
-+ kdbus_queue_entry_free(e);
-+ continue;
-+ }
-+
-+ ret = kdbus_queue_entry_move(e, conn_dst);
-+ if (ret < 0) {
-+ kdbus_conn_lost_message(conn_dst);
-+ kdbus_queue_entry_free(e);
-+ continue;
-+ }
-+ }
-+ kdbus_conn_unlock2(conn_src, conn_dst);
-+
-+ /* wake up poll() */
-+ wake_up_interruptible(&conn_dst->wait);
-+}
-+
-+/* query the policy-database for all names of @whom */
-+static bool kdbus_conn_policy_query_all(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ struct kdbus_policy_db *db,
-+ struct kdbus_conn *whom,
-+ unsigned int access)
-+{
-+ struct kdbus_name_owner *owner;
-+ bool pass = false;
-+ int res;
-+
-+ lockdep_assert_held(&conn->ep->bus->name_registry->rwlock);
-+
-+ down_read(&db->entries_rwlock);
-+ mutex_lock(&whom->lock);
-+
-+ list_for_each_entry(owner, &whom->names_list, conn_entry) {
-+ if (owner->flags & KDBUS_NAME_IN_QUEUE)
-+ continue;
-+
-+ res = kdbus_policy_query_unlocked(db,
-+ conn_creds ? : conn->cred,
-+ owner->name->name,
-+ kdbus_strhash(owner->name->name));
-+ if (res >= (int)access) {
-+ pass = true;
-+ break;
-+ }
-+ }
-+
-+ mutex_unlock(&whom->lock);
-+ up_read(&db->entries_rwlock);
-+
-+ return pass;
-+}
-+
-+/**
-+ * kdbus_conn_policy_own_name() - verify a connection can own the given name
-+ * @conn: Connection
-+ * @conn_creds: Credentials of @conn to use for policy check
-+ * @name: Name
-+ *
-+ * This verifies that @conn is allowed to acquire the well-known name @name.
-+ *
-+ * Return: true if allowed, false if not.
-+ */
-+bool kdbus_conn_policy_own_name(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ const char *name)
-+{
-+ unsigned int hash = kdbus_strhash(name);
-+ int res;
-+
-+ if (!conn_creds)
-+ conn_creds = conn->cred;
-+
-+ if (conn->ep->user) {
-+ res = kdbus_policy_query(&conn->ep->policy_db, conn_creds,
-+ name, hash);
-+ if (res < KDBUS_POLICY_OWN)
-+ return false;
-+ }
-+
-+ if (conn->owner)
-+ return true;
-+
-+ res = kdbus_policy_query(&conn->ep->bus->policy_db, conn_creds,
-+ name, hash);
-+ return res >= KDBUS_POLICY_OWN;
-+}
-+
-+/**
-+ * kdbus_conn_policy_talk() - verify a connection can talk to a given peer
-+ * @conn: Connection that tries to talk
-+ * @conn_creds: Credentials of @conn to use for policy check
-+ * @to: Connection that is talked to
-+ *
-+ * This verifies that @conn is allowed to talk to @to.
-+ *
-+ * Return: true if allowed, false if not.
-+ */
-+bool kdbus_conn_policy_talk(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ struct kdbus_conn *to)
-+{
-+ if (!conn_creds)
-+ conn_creds = conn->cred;
-+
-+ if (conn->ep->user &&
-+ !kdbus_conn_policy_query_all(conn, conn_creds, &conn->ep->policy_db,
-+ to, KDBUS_POLICY_TALK))
-+ return false;
-+
-+ if (conn->owner)
-+ return true;
-+ if (uid_eq(conn_creds->euid, to->cred->uid))
-+ return true;
-+
-+ return kdbus_conn_policy_query_all(conn, conn_creds,
-+ &conn->ep->bus->policy_db, to,
-+ KDBUS_POLICY_TALK);
-+}
-+
-+/**
-+ * kdbus_conn_policy_see_name_unlocked() - verify a connection can see a given
-+ * name
-+ * @conn: Connection
-+ * @conn_creds: Credentials of @conn to use for policy check
-+ * @name: Name
-+ *
-+ * This verifies that @conn is allowed to see the well-known name @name. Caller
-+ * must hold policy-lock.
-+ *
-+ * Return: true if allowed, false if not.
-+ */
-+bool kdbus_conn_policy_see_name_unlocked(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ const char *name)
-+{
-+ int res;
-+
-+ /*
-+ * By default, all names are visible on a bus. SEE policies can only be
-+ * installed on custom endpoints, where by default no name is visible.
-+ */
-+ if (!conn->ep->user)
-+ return true;
-+
-+ res = kdbus_policy_query_unlocked(&conn->ep->policy_db,
-+ conn_creds ? : conn->cred,
-+ name, kdbus_strhash(name));
-+ return res >= KDBUS_POLICY_SEE;
-+}
-+
-+static bool kdbus_conn_policy_see_name(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ const char *name)
-+{
-+ bool res;
-+
-+ down_read(&conn->ep->policy_db.entries_rwlock);
-+ res = kdbus_conn_policy_see_name_unlocked(conn, conn_creds, name);
-+ up_read(&conn->ep->policy_db.entries_rwlock);
-+
-+ return res;
-+}
-+
-+static bool kdbus_conn_policy_see(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ struct kdbus_conn *whom)
-+{
-+ /*
-+ * By default, all names are visible on a bus, so a connection can
-+ * always see other connections. SEE policies can only be installed on
-+ * custom endpoints, where by default no name is visible and we hide
-+ * peers from each other, unless you see at least _one_ name of the
-+ * peer.
-+ */
-+ return !conn->ep->user ||
-+ kdbus_conn_policy_query_all(conn, conn_creds,
-+ &conn->ep->policy_db, whom,
-+ KDBUS_POLICY_SEE);
-+}
-+
-+/**
-+ * kdbus_conn_policy_see_notification() - verify a connection is allowed to
-+ * receive a given kernel notification
-+ * @conn: Connection
-+ * @conn_creds: Credentials of @conn to use for policy check
-+ * @msg: Notification message
-+ *
-+ * This checks whether @conn is allowed to see the kernel notification.
-+ *
-+ * Return: true if allowed, false if not.
-+ */
-+bool kdbus_conn_policy_see_notification(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ const struct kdbus_msg *msg)
-+{
-+ /*
-+ * Depending on the notification type, broadcasted kernel notifications
-+ * have to be filtered:
-+ *
-+ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE}: This notification is forwarded
-+ * to a peer if, and only if, that peer can see the name this
-+ * notification is for.
-+ *
-+ * KDBUS_ITEM_ID_{ADD,REMOVE}: Notifications for ID changes are
-+ * broadcast to everyone, to allow tracking peers.
-+ */
-+
-+ switch (msg->items[0].type) {
-+ case KDBUS_ITEM_NAME_ADD:
-+ case KDBUS_ITEM_NAME_REMOVE:
-+ case KDBUS_ITEM_NAME_CHANGE:
-+ return kdbus_conn_policy_see_name(conn, conn_creds,
-+ msg->items[0].name_change.name);
-+
-+ case KDBUS_ITEM_ID_ADD:
-+ case KDBUS_ITEM_ID_REMOVE:
-+ return true;
-+
-+ default:
-+ WARN(1, "Invalid type for notification broadcast: %llu\n",
-+ (unsigned long long)msg->items[0].type);
-+ return false;
-+ }
-+}
-+
-+/**
-+ * kdbus_cmd_hello() - handle KDBUS_CMD_HELLO
-+ * @ep: Endpoint to operate on
-+ * @file: File this connection is opened on
-+ * @argp: Command payload
-+ *
-+ * Return: NULL or newly created connection on success, ERR_PTR on failure.
-+ */
-+struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, struct file *file,
-+ void __user *argp)
-+{
-+ struct kdbus_cmd_hello *cmd;
-+ struct kdbus_conn *c = NULL;
-+ const char *item_name;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_NAME },
-+ { .type = KDBUS_ITEM_CREDS },
-+ { .type = KDBUS_ITEM_PIDS },
-+ { .type = KDBUS_ITEM_SECLABEL },
-+ { .type = KDBUS_ITEM_CONN_DESCRIPTION },
-+ { .type = KDBUS_ITEM_POLICY_ACCESS, .multiple = true },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_HELLO_ACCEPT_FD |
-+ KDBUS_HELLO_ACTIVATOR |
-+ KDBUS_HELLO_POLICY_HOLDER |
-+ KDBUS_HELLO_MONITOR,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+ if (ret > 0)
-+ return NULL;
-+
-+ item_name = argv[1].item ? argv[1].item->str : NULL;
-+
-+ c = kdbus_conn_new(ep, file, cmd, item_name,
-+ argv[2].item ? &argv[2].item->creds : NULL,
-+ argv[3].item ? &argv[3].item->pids : NULL,
-+ argv[4].item ? argv[4].item->str : NULL,
-+ argv[5].item ? argv[5].item->str : NULL);
-+ if (IS_ERR(c)) {
-+ ret = PTR_ERR(c);
-+ c = NULL;
-+ goto exit;
-+ }
-+
-+ ret = kdbus_conn_connect(c, item_name);
-+ if (ret < 0)
-+ goto exit;
-+
-+ if (kdbus_conn_is_activator(c) || kdbus_conn_is_policy_holder(c)) {
-+ ret = kdbus_conn_acquire(c);
-+ if (ret < 0)
-+ goto exit;
-+
-+ ret = kdbus_policy_set(&c->ep->bus->policy_db, args.items,
-+ args.items_size, 1,
-+ kdbus_conn_is_policy_holder(c), c);
-+ kdbus_conn_release(c);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ if (copy_to_user(argp, cmd, sizeof(*cmd)))
-+ ret = -EFAULT;
-+
-+exit:
-+ ret = kdbus_args_clear(&args, ret);
-+ if (ret < 0) {
-+ if (c) {
-+ kdbus_conn_disconnect(c, false);
-+ kdbus_conn_unref(c);
-+ }
-+ return ERR_PTR(ret);
-+ }
-+ return c;
-+}
-+
-+/**
-+ * kdbus_cmd_byebye_unlocked() - handle KDBUS_CMD_BYEBYE
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * The caller must not hold any active reference to @conn or this will deadlock.
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_byebye_unlocked(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_cmd *cmd;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ if (!kdbus_conn_is_ordinary(conn))
-+ return -EOPNOTSUPP;
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ ret = kdbus_conn_disconnect(conn, true);
-+ return kdbus_args_clear(&args, ret);
-+}
-+
-+/**
-+ * kdbus_cmd_conn_info() - handle KDBUS_CMD_CONN_INFO
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_meta_conn *conn_meta = NULL;
-+ struct kdbus_pool_slice *slice = NULL;
-+ struct kdbus_name_entry *entry = NULL;
-+ struct kdbus_name_owner *owner = NULL;
-+ struct kdbus_conn *owner_conn = NULL;
-+ struct kdbus_item *meta_items = NULL;
-+ struct kdbus_info info = {};
-+ struct kdbus_cmd_info *cmd;
-+ struct kdbus_bus *bus = conn->ep->bus;
-+ struct kvec kvec[3];
-+ size_t meta_size, cnt = 0;
-+ const char *name;
-+ u64 attach_flags, size = 0;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_NAME },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ /* registry must be held throughout lookup *and* collecting data */
-+ down_read(&bus->name_registry->rwlock);
-+
-+ ret = kdbus_sanitize_attach_flags(cmd->attach_flags, &attach_flags);
-+ if (ret < 0)
-+ goto exit;
-+
-+ name = argv[1].item ? argv[1].item->str : NULL;
-+
-+ if (name) {
-+ entry = kdbus_name_lookup_unlocked(bus->name_registry, name);
-+ if (entry)
-+ owner = kdbus_name_get_owner(entry);
-+ if (!owner ||
-+ !kdbus_conn_policy_see_name(conn, current_cred(), name) ||
-+ (cmd->id != 0 && owner->conn->id != cmd->id)) {
-+ /* pretend a name doesn't exist if you cannot see it */
-+ ret = -ESRCH;
-+ goto exit;
-+ }
-+
-+ owner_conn = kdbus_conn_ref(owner->conn);
-+ } else if (cmd->id > 0) {
-+ owner_conn = kdbus_bus_find_conn_by_id(bus, cmd->id);
-+ if (!owner_conn || !kdbus_conn_policy_see(conn, current_cred(),
-+ owner_conn)) {
-+ /* pretend an id doesn't exist if you cannot see it */
-+ ret = -ENXIO;
-+ goto exit;
-+ }
-+ } else {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
-+
-+ attach_flags &= atomic64_read(&owner_conn->attach_flags_send);
-+
-+ conn_meta = kdbus_meta_conn_new();
-+ if (IS_ERR(conn_meta)) {
-+ ret = PTR_ERR(conn_meta);
-+ conn_meta = NULL;
-+ goto exit;
-+ }
-+
-+ ret = kdbus_meta_conn_collect(conn_meta, owner_conn, 0, attach_flags);
-+ if (ret < 0)
-+ goto exit;
-+
-+ ret = kdbus_meta_emit(owner_conn->meta_proc, owner_conn->meta_fake,
-+ conn_meta, conn, attach_flags,
-+ &meta_items, &meta_size);
-+ if (ret < 0)
-+ goto exit;
-+
-+ info.id = owner_conn->id;
-+ info.flags = owner_conn->flags;
-+
-+ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &size);
-+ if (meta_size > 0) {
-+ kdbus_kvec_set(&kvec[cnt++], meta_items, meta_size, &size);
-+ cnt += !!kdbus_kvec_pad(&kvec[cnt], &size);
-+ }
-+
-+ info.size = size;
-+
-+ slice = kdbus_pool_slice_alloc(conn->pool, size, false);
-+ if (IS_ERR(slice)) {
-+ ret = PTR_ERR(slice);
-+ slice = NULL;
-+ goto exit;
-+ }
-+
-+ ret = kdbus_pool_slice_copy_kvec(slice, 0, kvec, cnt, size);
-+ if (ret < 0)
-+ goto exit;
-+
-+ kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->info_size);
-+
-+ if (kdbus_member_set_user(&cmd->offset, argp, typeof(*cmd), offset) ||
-+ kdbus_member_set_user(&cmd->info_size, argp,
-+ typeof(*cmd), info_size)) {
-+ ret = -EFAULT;
-+ goto exit;
-+ }
-+
-+ ret = 0;
-+
-+exit:
-+ up_read(&bus->name_registry->rwlock);
-+ kdbus_pool_slice_release(slice);
-+ kfree(meta_items);
-+ kdbus_meta_conn_unref(conn_meta);
-+ kdbus_conn_unref(owner_conn);
-+ return kdbus_args_clear(&args, ret);
-+}
-+
-+/**
-+ * kdbus_cmd_update() - handle KDBUS_CMD_UPDATE
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_update(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_item *item_policy;
-+ u64 *item_attach_send = NULL;
-+ u64 *item_attach_recv = NULL;
-+ struct kdbus_cmd *cmd;
-+ u64 attach_send;
-+ u64 attach_recv;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_ATTACH_FLAGS_SEND },
-+ { .type = KDBUS_ITEM_ATTACH_FLAGS_RECV },
-+ { .type = KDBUS_ITEM_NAME, .multiple = true },
-+ { .type = KDBUS_ITEM_POLICY_ACCESS, .multiple = true },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ item_attach_send = argv[1].item ? &argv[1].item->data64[0] : NULL;
-+ item_attach_recv = argv[2].item ? &argv[2].item->data64[0] : NULL;
-+ item_policy = argv[3].item ? : argv[4].item;
-+
-+ if (item_attach_send) {
-+ if (!kdbus_conn_is_ordinary(conn) &&
-+ !kdbus_conn_is_monitor(conn)) {
-+ ret = -EOPNOTSUPP;
-+ goto exit;
-+ }
-+
-+ ret = kdbus_sanitize_attach_flags(*item_attach_send,
-+ &attach_send);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ if (item_attach_recv) {
-+ if (!kdbus_conn_is_ordinary(conn) &&
-+ !kdbus_conn_is_monitor(conn) &&
-+ !kdbus_conn_is_activator(conn)) {
-+ ret = -EOPNOTSUPP;
-+ goto exit;
-+ }
-+
-+ ret = kdbus_sanitize_attach_flags(*item_attach_recv,
-+ &attach_recv);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ if (item_policy && !kdbus_conn_is_policy_holder(conn)) {
-+ ret = -EOPNOTSUPP;
-+ goto exit;
-+ }
-+
-+ /* now that we verified the input, update the connection */
-+
-+ if (item_policy) {
-+ ret = kdbus_policy_set(&conn->ep->bus->policy_db, cmd->items,
-+ KDBUS_ITEMS_SIZE(cmd, items),
-+ 1, true, conn);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ if (item_attach_send)
-+ atomic64_set(&conn->attach_flags_send, attach_send);
-+
-+ if (item_attach_recv)
-+ atomic64_set(&conn->attach_flags_recv, attach_recv);
-+
-+exit:
-+ return kdbus_args_clear(&args, ret);
-+}
-+
-+/**
-+ * kdbus_cmd_send() - handle KDBUS_CMD_SEND
-+ * @conn: connection to operate on
-+ * @f: file this command was called on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_send(struct kdbus_conn *conn, struct file *f, void __user *argp)
-+{
-+ struct kdbus_cmd_send *cmd;
-+ struct kdbus_staging *staging = NULL;
-+ struct kdbus_msg *msg = NULL;
-+ struct file *cancel_fd = NULL;
-+ int ret, ret2;
-+
-+ /* command arguments */
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_CANCEL_FD },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_SEND_SYNC_REPLY,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ /* message arguments */
-+ struct kdbus_arg msg_argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_PAYLOAD_VEC, .multiple = true },
-+ { .type = KDBUS_ITEM_PAYLOAD_MEMFD, .multiple = true },
-+ { .type = KDBUS_ITEM_FDS },
-+ { .type = KDBUS_ITEM_BLOOM_FILTER },
-+ { .type = KDBUS_ITEM_DST_NAME },
-+ };
-+ struct kdbus_args msg_args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_MSG_EXPECT_REPLY |
-+ KDBUS_MSG_NO_AUTO_START |
-+ KDBUS_MSG_SIGNAL,
-+ .argv = msg_argv,
-+ .argc = ARRAY_SIZE(msg_argv),
-+ };
-+
-+ if (!kdbus_conn_is_ordinary(conn))
-+ return -EOPNOTSUPP;
-+
-+ /* make sure to parse both, @cmd and @msg on negotiation */
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret < 0)
-+ goto exit;
-+ else if (ret > 0 && !cmd->msg_address) /* negotiation without msg */
-+ goto exit;
-+
-+ ret2 = kdbus_args_parse_msg(&msg_args, KDBUS_PTR(cmd->msg_address),
-+ &msg);
-+ if (ret2 < 0) { /* cannot parse message */
-+ ret = ret2;
-+ goto exit;
-+ } else if (ret2 > 0 && !ret) { /* msg-negot implies cmd-negot */
-+ ret = -EINVAL;
-+ goto exit;
-+ } else if (ret > 0) { /* negotiation */
-+ goto exit;
-+ }
-+
-+ /* here we parsed both, @cmd and @msg, and neither wants negotiation */
-+
-+ cmd->reply.return_flags = 0;
-+ kdbus_pool_publish_empty(conn->pool, &cmd->reply.offset,
-+ &cmd->reply.msg_size);
-+
-+ if (argv[1].item) {
-+ cancel_fd = fget(argv[1].item->fds[0]);
-+ if (!cancel_fd) {
-+ ret = -EBADF;
-+ goto exit;
-+ }
-+
-+ if (!cancel_fd->f_op->poll) {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
-+ }
-+
-+ /* patch-in the source of this message */
-+ if (msg->src_id > 0 && msg->src_id != conn->id) {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
-+ msg->src_id = conn->id;
-+
-+ staging = kdbus_staging_new_user(conn->ep->bus, cmd, msg);
-+ if (IS_ERR(staging)) {
-+ ret = PTR_ERR(staging);
-+ staging = NULL;
-+ goto exit;
-+ }
-+
-+ if (msg->dst_id == KDBUS_DST_ID_BROADCAST) {
-+ down_read(&conn->ep->bus->name_registry->rwlock);
-+ kdbus_bus_broadcast(conn->ep->bus, conn, staging);
-+ up_read(&conn->ep->bus->name_registry->rwlock);
-+ } else if (cmd->flags & KDBUS_SEND_SYNC_REPLY) {
-+ struct kdbus_reply *r;
-+ ktime_t exp;
-+
-+ exp = ns_to_ktime(msg->timeout_ns);
-+ r = kdbus_conn_call(conn, staging, exp);
-+ if (IS_ERR(r)) {
-+ ret = PTR_ERR(r);
-+ goto exit;
-+ }
-+
-+ ret = kdbus_conn_wait_reply(conn, cmd, f, cancel_fd, r, exp);
-+ kdbus_reply_unref(r);
-+ if (ret < 0)
-+ goto exit;
-+ } else if ((msg->flags & KDBUS_MSG_EXPECT_REPLY) ||
-+ msg->cookie_reply == 0) {
-+ ret = kdbus_conn_unicast(conn, staging);
-+ if (ret < 0)
-+ goto exit;
-+ } else {
-+ ret = kdbus_conn_reply(conn, staging);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ if (kdbus_member_set_user(&cmd->reply, argp, typeof(*cmd), reply))
-+ ret = -EFAULT;
-+
-+exit:
-+ if (cancel_fd)
-+ fput(cancel_fd);
-+ kdbus_staging_free(staging);
-+ ret = kdbus_args_clear(&msg_args, ret);
-+ return kdbus_args_clear(&args, ret);
-+}
-+
-+/**
-+ * kdbus_cmd_recv() - handle KDBUS_CMD_RECV
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_recv(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_queue_entry *entry;
-+ struct kdbus_cmd_recv *cmd;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_RECV_PEEK |
-+ KDBUS_RECV_DROP |
-+ KDBUS_RECV_USE_PRIORITY,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ if (!kdbus_conn_is_ordinary(conn) &&
-+ !kdbus_conn_is_monitor(conn) &&
-+ !kdbus_conn_is_activator(conn))
-+ return -EOPNOTSUPP;
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ cmd->dropped_msgs = 0;
-+ cmd->msg.return_flags = 0;
-+ kdbus_pool_publish_empty(conn->pool, &cmd->msg.offset,
-+ &cmd->msg.msg_size);
-+
-+ /* DROP+priority is not realiably, so prevent it */
-+ if ((cmd->flags & KDBUS_RECV_DROP) &&
-+ (cmd->flags & KDBUS_RECV_USE_PRIORITY)) {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
-+
-+ mutex_lock(&conn->lock);
-+
-+ entry = kdbus_queue_peek(&conn->queue, cmd->priority,
-+ cmd->flags & KDBUS_RECV_USE_PRIORITY);
-+ if (!entry) {
-+ mutex_unlock(&conn->lock);
-+ ret = -EAGAIN;
-+ } else if (cmd->flags & KDBUS_RECV_DROP) {
-+ struct kdbus_reply *reply = kdbus_reply_ref(entry->reply);
-+
-+ kdbus_queue_entry_free(entry);
-+
-+ mutex_unlock(&conn->lock);
-+
-+ if (reply) {
-+ mutex_lock(&reply->reply_dst->lock);
-+ if (!list_empty(&reply->entry)) {
-+ kdbus_reply_unlink(reply);
-+ if (reply->sync)
-+ kdbus_sync_reply_wakeup(reply, -EPIPE);
-+ else
-+ kdbus_notify_reply_dead(conn->ep->bus,
-+ reply->reply_dst->id,
-+ reply->cookie);
-+ }
-+ mutex_unlock(&reply->reply_dst->lock);
-+ kdbus_notify_flush(conn->ep->bus);
-+ }
-+
-+ kdbus_reply_unref(reply);
-+ } else {
-+ bool install_fds;
-+
-+ /*
-+ * PEEK just returns the location of the next message. Do not
-+ * install FDs nor memfds nor anything else. The only
-+ * information of interest should be the message header and
-+ * metadata. Any FD numbers in the payload is undefined for
-+ * PEEK'ed messages.
-+ * Also make sure to never install fds into a connection that
-+ * has refused to receive any. Ordinary connections will not get
-+ * messages with FDs queued (the receiver will get -ECOMM), but
-+ * eavesdroppers might.
-+ */
-+ install_fds = (conn->flags & KDBUS_HELLO_ACCEPT_FD) &&
-+ !(cmd->flags & KDBUS_RECV_PEEK);
-+
-+ ret = kdbus_queue_entry_install(entry,
-+ &cmd->msg.return_flags,
-+ install_fds);
-+ if (ret < 0) {
-+ mutex_unlock(&conn->lock);
-+ goto exit;
-+ }
-+
-+ kdbus_pool_slice_publish(entry->slice, &cmd->msg.offset,
-+ &cmd->msg.msg_size);
-+
-+ if (!(cmd->flags & KDBUS_RECV_PEEK))
-+ kdbus_queue_entry_free(entry);
-+
-+ mutex_unlock(&conn->lock);
-+ }
-+
-+ cmd->dropped_msgs = atomic_xchg(&conn->lost_count, 0);
-+ if (cmd->dropped_msgs > 0)
-+ cmd->return_flags |= KDBUS_RECV_RETURN_DROPPED_MSGS;
-+
-+ if (kdbus_member_set_user(&cmd->msg, argp, typeof(*cmd), msg) ||
-+ kdbus_member_set_user(&cmd->dropped_msgs, argp, typeof(*cmd),
-+ dropped_msgs))
-+ ret = -EFAULT;
-+
-+exit:
-+ return kdbus_args_clear(&args, ret);
-+}
-+
-+/**
-+ * kdbus_cmd_free() - handle KDBUS_CMD_FREE
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_free(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_cmd_free *cmd;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ if (!kdbus_conn_is_ordinary(conn) &&
-+ !kdbus_conn_is_monitor(conn) &&
-+ !kdbus_conn_is_activator(conn))
-+ return -EOPNOTSUPP;
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ ret = kdbus_pool_release_offset(conn->pool, cmd->offset);
-+
-+ return kdbus_args_clear(&args, ret);
-+}
-diff --git a/ipc/kdbus/connection.h b/ipc/kdbus/connection.h
-new file mode 100644
-index 0000000..1ad0820
---- /dev/null
-+++ b/ipc/kdbus/connection.h
-@@ -0,0 +1,260 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_CONNECTION_H
-+#define __KDBUS_CONNECTION_H
-+
-+#include <linux/atomic.h>
-+#include <linux/kref.h>
-+#include <linux/lockdep.h>
-+#include <linux/path.h>
-+
-+#include "limits.h"
-+#include "metadata.h"
-+#include "pool.h"
-+#include "queue.h"
-+#include "util.h"
-+
-+#define KDBUS_HELLO_SPECIAL_CONN (KDBUS_HELLO_ACTIVATOR | \
-+ KDBUS_HELLO_POLICY_HOLDER | \
-+ KDBUS_HELLO_MONITOR)
-+
-+struct kdbus_name_entry;
-+struct kdbus_quota;
-+struct kdbus_staging;
-+
-+/**
-+ * struct kdbus_conn - connection to a bus
-+ * @kref: Reference count
-+ * @active: Active references to the connection
-+ * @id: Connection ID
-+ * @flags: KDBUS_HELLO_* flags
-+ * @attach_flags_send: KDBUS_ATTACH_* flags for sending
-+ * @attach_flags_recv: KDBUS_ATTACH_* flags for receiving
-+ * @description: Human-readable connection description, used for
-+ * debugging. This field is only set when the
-+ * connection is created.
-+ * @ep: The endpoint this connection belongs to
-+ * @lock: Connection data lock
-+ * @hentry: Entry in ID <-> connection map
-+ * @ep_entry: Entry in endpoint
-+ * @monitor_entry: Entry in monitor, if the connection is a monitor
-+ * @reply_list: List of connections this connection should
-+ * reply to
-+ * @work: Delayed work to handle timeouts
-+ * activator for
-+ * @match_db: Subscription filter to broadcast messages
-+ * @meta_proc: Process metadata of connection creator, or NULL
-+ * @meta_fake: Faked metadata, or NULL
-+ * @pool: The user's buffer to receive messages
-+ * @user: Owner of the connection
-+ * @cred: The credentials of the connection at creation time
-+ * @pid: Pid at creation time
-+ * @root_path: Root path at creation time
-+ * @request_count: Number of pending requests issued by this
-+ * connection that are waiting for replies from
-+ * other peers
-+ * @lost_count: Number of lost broadcast messages
-+ * @wait: Wake up this endpoint
-+ * @queue: The message queue associated with this connection
-+ * @quota: Array of per-user quota indexed by user->id
-+ * @n_quota: Number of elements in quota array
-+ * @names_list: List of well-known names
-+ * @name_count: Number of owned well-known names
-+ * @privileged: Whether this connection is privileged on the domain
-+ * @owner: Owned by the same user as the bus owner
-+ */
-+struct kdbus_conn {
-+ struct kref kref;
-+ atomic_t active;
-+#ifdef CONFIG_DEBUG_LOCK_ALLOC
-+ struct lockdep_map dep_map;
-+#endif
-+ u64 id;
-+ u64 flags;
-+ atomic64_t attach_flags_send;
-+ atomic64_t attach_flags_recv;
-+ const char *description;
-+ struct kdbus_ep *ep;
-+ struct mutex lock;
-+ struct hlist_node hentry;
-+ struct list_head ep_entry;
-+ struct list_head monitor_entry;
-+ struct list_head reply_list;
-+ struct delayed_work work;
-+ struct kdbus_match_db *match_db;
-+ struct kdbus_meta_proc *meta_proc;
-+ struct kdbus_meta_fake *meta_fake;
-+ struct kdbus_pool *pool;
-+ struct kdbus_user *user;
-+ const struct cred *cred;
-+ struct pid *pid;
-+ struct path root_path;
-+ atomic_t request_count;
-+ atomic_t lost_count;
-+ wait_queue_head_t wait;
-+ struct kdbus_queue queue;
-+
-+ struct kdbus_quota *quota;
-+ unsigned int n_quota;
-+
-+ /* protected by registry->rwlock */
-+ struct list_head names_list;
-+ unsigned int name_count;
-+
-+ bool privileged:1;
-+ bool owner:1;
-+};
-+
-+struct kdbus_conn *kdbus_conn_ref(struct kdbus_conn *conn);
-+struct kdbus_conn *kdbus_conn_unref(struct kdbus_conn *conn);
-+bool kdbus_conn_active(const struct kdbus_conn *conn);
-+int kdbus_conn_acquire(struct kdbus_conn *conn);
-+void kdbus_conn_release(struct kdbus_conn *conn);
-+int kdbus_conn_disconnect(struct kdbus_conn *conn, bool ensure_queue_empty);
-+bool kdbus_conn_has_name(struct kdbus_conn *conn, const char *name);
-+int kdbus_conn_quota_inc(struct kdbus_conn *c, struct kdbus_user *u,
-+ size_t memory, size_t fds);
-+void kdbus_conn_quota_dec(struct kdbus_conn *c, struct kdbus_user *u,
-+ size_t memory, size_t fds);
-+void kdbus_conn_lost_message(struct kdbus_conn *c);
-+int kdbus_conn_entry_insert(struct kdbus_conn *conn_src,
-+ struct kdbus_conn *conn_dst,
-+ struct kdbus_staging *staging,
-+ struct kdbus_reply *reply,
-+ const struct kdbus_name_entry *name);
-+void kdbus_conn_move_messages(struct kdbus_conn *conn_dst,
-+ struct kdbus_conn *conn_src,
-+ u64 name_id);
-+
-+/* policy */
-+bool kdbus_conn_policy_own_name(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ const char *name);
-+bool kdbus_conn_policy_talk(struct kdbus_conn *conn,
-+ const struct cred *conn_creds,
-+ struct kdbus_conn *to);
-+bool kdbus_conn_policy_see_name_unlocked(struct kdbus_conn *conn,
-+ const struct cred *curr_creds,
-+ const char *name);
-+bool kdbus_conn_policy_see_notification(struct kdbus_conn *conn,
-+ const struct cred *curr_creds,
-+ const struct kdbus_msg *msg);
-+
-+/* command dispatcher */
-+struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, struct file *file,
-+ void __user *argp);
-+int kdbus_cmd_byebye_unlocked(struct kdbus_conn *conn, void __user *argp);
-+int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp);
-+int kdbus_cmd_update(struct kdbus_conn *conn, void __user *argp);
-+int kdbus_cmd_send(struct kdbus_conn *conn, struct file *f, void __user *argp);
-+int kdbus_cmd_recv(struct kdbus_conn *conn, void __user *argp);
-+int kdbus_cmd_free(struct kdbus_conn *conn, void __user *argp);
-+
-+/**
-+ * kdbus_conn_is_ordinary() - Check if connection is ordinary
-+ * @conn: The connection to check
-+ *
-+ * Return: Non-zero if the connection is an ordinary connection
-+ */
-+static inline int kdbus_conn_is_ordinary(const struct kdbus_conn *conn)
-+{
-+ return !(conn->flags & KDBUS_HELLO_SPECIAL_CONN);
-+}
-+
-+/**
-+ * kdbus_conn_is_activator() - Check if connection is an activator
-+ * @conn: The connection to check
-+ *
-+ * Return: Non-zero if the connection is an activator
-+ */
-+static inline int kdbus_conn_is_activator(const struct kdbus_conn *conn)
-+{
-+ return conn->flags & KDBUS_HELLO_ACTIVATOR;
-+}
-+
-+/**
-+ * kdbus_conn_is_policy_holder() - Check if connection is a policy holder
-+ * @conn: The connection to check
-+ *
-+ * Return: Non-zero if the connection is a policy holder
-+ */
-+static inline int kdbus_conn_is_policy_holder(const struct kdbus_conn *conn)
-+{
-+ return conn->flags & KDBUS_HELLO_POLICY_HOLDER;
-+}
-+
-+/**
-+ * kdbus_conn_is_monitor() - Check if connection is a monitor
-+ * @conn: The connection to check
-+ *
-+ * Return: Non-zero if the connection is a monitor
-+ */
-+static inline int kdbus_conn_is_monitor(const struct kdbus_conn *conn)
-+{
-+ return conn->flags & KDBUS_HELLO_MONITOR;
-+}
-+
-+/**
-+ * kdbus_conn_lock2() - Lock two connections
-+ * @a: connection A to lock or NULL
-+ * @b: connection B to lock or NULL
-+ *
-+ * Lock two connections at once. As we need to have a stable locking order, we
-+ * always lock the connection with lower memory address first.
-+ */
-+static inline void kdbus_conn_lock2(struct kdbus_conn *a, struct kdbus_conn *b)
-+{
-+ if (a < b) {
-+ if (a)
-+ mutex_lock(&a->lock);
-+ if (b && b != a)
-+ mutex_lock_nested(&b->lock, !!a);
-+ } else {
-+ if (b)
-+ mutex_lock(&b->lock);
-+ if (a && a != b)
-+ mutex_lock_nested(&a->lock, !!b);
-+ }
-+}
-+
-+/**
-+ * kdbus_conn_unlock2() - Unlock two connections
-+ * @a: connection A to unlock or NULL
-+ * @b: connection B to unlock or NULL
-+ *
-+ * Unlock two connections at once. See kdbus_conn_lock2().
-+ */
-+static inline void kdbus_conn_unlock2(struct kdbus_conn *a,
-+ struct kdbus_conn *b)
-+{
-+ if (a)
-+ mutex_unlock(&a->lock);
-+ if (b && b != a)
-+ mutex_unlock(&b->lock);
-+}
-+
-+/**
-+ * kdbus_conn_assert_active() - lockdep assert on active lock
-+ * @conn: connection that shall be active
-+ *
-+ * This verifies via lockdep that the caller holds an active reference to the
-+ * given connection.
-+ */
-+static inline void kdbus_conn_assert_active(struct kdbus_conn *conn)
-+{
-+ lockdep_assert_held(conn);
-+}
-+
-+#endif
-diff --git a/ipc/kdbus/domain.c b/ipc/kdbus/domain.c
-new file mode 100644
-index 0000000..ac9f760
---- /dev/null
-+++ b/ipc/kdbus/domain.c
-@@ -0,0 +1,296 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/fs.h>
-+#include <linux/idr.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/sched.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+
-+#include "bus.h"
-+#include "domain.h"
-+#include "handle.h"
-+#include "item.h"
-+#include "limits.h"
-+#include "util.h"
-+
-+static void kdbus_domain_control_free(struct kdbus_node *node)
-+{
-+ kfree(node);
-+}
-+
-+static struct kdbus_node *kdbus_domain_control_new(struct kdbus_domain *domain,
-+ unsigned int access)
-+{
-+ struct kdbus_node *node;
-+ int ret;
-+
-+ node = kzalloc(sizeof(*node), GFP_KERNEL);
-+ if (!node)
-+ return ERR_PTR(-ENOMEM);
-+
-+ kdbus_node_init(node, KDBUS_NODE_CONTROL);
-+
-+ node->free_cb = kdbus_domain_control_free;
-+ node->mode = domain->node.mode;
-+ node->mode = S_IRUSR | S_IWUSR;
-+ if (access & (KDBUS_MAKE_ACCESS_GROUP | KDBUS_MAKE_ACCESS_WORLD))
-+ node->mode |= S_IRGRP | S_IWGRP;
-+ if (access & KDBUS_MAKE_ACCESS_WORLD)
-+ node->mode |= S_IROTH | S_IWOTH;
-+
-+ ret = kdbus_node_link(node, &domain->node, "control");
-+ if (ret < 0)
-+ goto exit_free;
-+
-+ return node;
-+
-+exit_free:
-+ kdbus_node_deactivate(node);
-+ kdbus_node_unref(node);
-+ return ERR_PTR(ret);
-+}
-+
-+static void kdbus_domain_free(struct kdbus_node *node)
-+{
-+ struct kdbus_domain *domain =
-+ container_of(node, struct kdbus_domain, node);
-+
-+ put_user_ns(domain->user_namespace);
-+ ida_destroy(&domain->user_ida);
-+ idr_destroy(&domain->user_idr);
-+ kfree(domain);
-+}
-+
-+/**
-+ * kdbus_domain_new() - create a new domain
-+ * @access: The access mode for this node (KDBUS_MAKE_ACCESS_*)
-+ *
-+ * Return: a new kdbus_domain on success, ERR_PTR on failure
-+ */
-+struct kdbus_domain *kdbus_domain_new(unsigned int access)
-+{
-+ struct kdbus_domain *d;
-+ int ret;
-+
-+ d = kzalloc(sizeof(*d), GFP_KERNEL);
-+ if (!d)
-+ return ERR_PTR(-ENOMEM);
-+
-+ kdbus_node_init(&d->node, KDBUS_NODE_DOMAIN);
-+
-+ d->node.free_cb = kdbus_domain_free;
-+ d->node.mode = S_IRUSR | S_IXUSR;
-+ if (access & (KDBUS_MAKE_ACCESS_GROUP | KDBUS_MAKE_ACCESS_WORLD))
-+ d->node.mode |= S_IRGRP | S_IXGRP;
-+ if (access & KDBUS_MAKE_ACCESS_WORLD)
-+ d->node.mode |= S_IROTH | S_IXOTH;
-+
-+ mutex_init(&d->lock);
-+ idr_init(&d->user_idr);
-+ ida_init(&d->user_ida);
-+
-+ /* Pin user namespace so we can guarantee domain-unique bus * names. */
-+ d->user_namespace = get_user_ns(current_user_ns());
-+
-+ ret = kdbus_node_link(&d->node, NULL, NULL);
-+ if (ret < 0)
-+ goto exit_unref;
-+
-+ return d;
-+
-+exit_unref:
-+ kdbus_node_deactivate(&d->node);
-+ kdbus_node_unref(&d->node);
-+ return ERR_PTR(ret);
-+}
-+
-+/**
-+ * kdbus_domain_ref() - take a domain reference
-+ * @domain: Domain
-+ *
-+ * Return: the domain itself
-+ */
-+struct kdbus_domain *kdbus_domain_ref(struct kdbus_domain *domain)
-+{
-+ if (domain)
-+ kdbus_node_ref(&domain->node);
-+ return domain;
-+}
-+
-+/**
-+ * kdbus_domain_unref() - drop a domain reference
-+ * @domain: Domain
-+ *
-+ * When the last reference is dropped, the domain internal structure
-+ * is freed.
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_domain *kdbus_domain_unref(struct kdbus_domain *domain)
-+{
-+ if (domain)
-+ kdbus_node_unref(&domain->node);
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_domain_populate() - populate static domain nodes
-+ * @domain: domain to populate
-+ * @access: KDBUS_MAKE_ACCESS_* access restrictions for new nodes
-+ *
-+ * Allocate and activate static sub-nodes of the given domain. This will fail if
-+ * you call it on a non-active node or if the domain was already populated.
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_domain_populate(struct kdbus_domain *domain, unsigned int access)
-+{
-+ struct kdbus_node *control;
-+
-+ /*
-+ * Create a control-node for this domain. We drop our own reference
-+ * immediately, effectively causing the node to be deactivated and
-+ * released when the parent domain is.
-+ */
-+ control = kdbus_domain_control_new(domain, access);
-+ if (IS_ERR(control))
-+ return PTR_ERR(control);
-+
-+ kdbus_node_activate(control);
-+ kdbus_node_unref(control);
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_user_lookup() - lookup a kdbus_user object
-+ * @domain: domain of the user
-+ * @uid: uid of the user; INVALID_UID for an anon user
-+ *
-+ * Lookup the kdbus user accounting object for the given domain. If INVALID_UID
-+ * is passed, a new anonymous user is created which is private to the caller.
-+ *
-+ * Return: The user object is returned, ERR_PTR on failure.
-+ */
-+struct kdbus_user *kdbus_user_lookup(struct kdbus_domain *domain, kuid_t uid)
-+{
-+ struct kdbus_user *u = NULL, *old = NULL;
-+ int ret;
-+
-+ mutex_lock(&domain->lock);
-+
-+ if (uid_valid(uid)) {
-+ old = idr_find(&domain->user_idr, __kuid_val(uid));
-+ /*
-+ * If the object is about to be destroyed, ignore it and
-+ * replace the slot in the IDR later on.
-+ */
-+ if (old && kref_get_unless_zero(&old->kref)) {
-+ mutex_unlock(&domain->lock);
-+ return old;
-+ }
-+ }
-+
-+ u = kzalloc(sizeof(*u), GFP_KERNEL);
-+ if (!u) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ kref_init(&u->kref);
-+ u->domain = kdbus_domain_ref(domain);
-+ u->uid = uid;
-+ atomic_set(&u->buses, 0);
-+ atomic_set(&u->connections, 0);
-+
-+ if (uid_valid(uid)) {
-+ if (old) {
-+ idr_replace(&domain->user_idr, u, __kuid_val(uid));
-+ old->uid = INVALID_UID; /* mark old as removed */
-+ } else {
-+ ret = idr_alloc(&domain->user_idr, u, __kuid_val(uid),
-+ __kuid_val(uid) + 1, GFP_KERNEL);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+ }
-+
-+ /*
-+ * Allocate the smallest possible index for this user; used
-+ * in arrays for accounting user quota in receiver queues.
-+ */
-+ ret = ida_simple_get(&domain->user_ida, 1, 0, GFP_KERNEL);
-+ if (ret < 0)
-+ goto exit;
-+
-+ u->id = ret;
-+ mutex_unlock(&domain->lock);
-+ return u;
-+
-+exit:
-+ if (u) {
-+ if (uid_valid(u->uid))
-+ idr_remove(&domain->user_idr, __kuid_val(u->uid));
-+ kdbus_domain_unref(u->domain);
-+ kfree(u);
-+ }
-+ mutex_unlock(&domain->lock);
-+ return ERR_PTR(ret);
-+}
-+
-+static void __kdbus_user_free(struct kref *kref)
-+{
-+ struct kdbus_user *user = container_of(kref, struct kdbus_user, kref);
-+
-+ WARN_ON(atomic_read(&user->buses) > 0);
-+ WARN_ON(atomic_read(&user->connections) > 0);
-+
-+ mutex_lock(&user->domain->lock);
-+ ida_simple_remove(&user->domain->user_ida, user->id);
-+ if (uid_valid(user->uid))
-+ idr_remove(&user->domain->user_idr, __kuid_val(user->uid));
-+ mutex_unlock(&user->domain->lock);
-+
-+ kdbus_domain_unref(user->domain);
-+ kfree(user);
-+}
-+
-+/**
-+ * kdbus_user_ref() - take a user reference
-+ * @u: User
-+ *
-+ * Return: @u is returned
-+ */
-+struct kdbus_user *kdbus_user_ref(struct kdbus_user *u)
-+{
-+ if (u)
-+ kref_get(&u->kref);
-+ return u;
-+}
-+
-+/**
-+ * kdbus_user_unref() - drop a user reference
-+ * @u: User
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_user *kdbus_user_unref(struct kdbus_user *u)
-+{
-+ if (u)
-+ kref_put(&u->kref, __kdbus_user_free);
-+ return NULL;
-+}
-diff --git a/ipc/kdbus/domain.h b/ipc/kdbus/domain.h
-new file mode 100644
-index 0000000..447a2bd
---- /dev/null
-+++ b/ipc/kdbus/domain.h
-@@ -0,0 +1,77 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_DOMAIN_H
-+#define __KDBUS_DOMAIN_H
-+
-+#include <linux/fs.h>
-+#include <linux/idr.h>
-+#include <linux/kref.h>
-+#include <linux/user_namespace.h>
-+
-+#include "node.h"
-+
-+/**
-+ * struct kdbus_domain - domain for buses
-+ * @node: Underlying API node
-+ * @lock: Domain data lock
-+ * @last_id: Last used object id
-+ * @user_idr: Set of all users indexed by UID
-+ * @user_ida: Set of all users to compute small indices
-+ * @user_namespace: User namespace, pinned at creation time
-+ * @dentry: Root dentry of VFS mount (don't use outside of kdbusfs)
-+ */
-+struct kdbus_domain {
-+ struct kdbus_node node;
-+ struct mutex lock;
-+ atomic64_t last_id;
-+ struct idr user_idr;
-+ struct ida user_ida;
-+ struct user_namespace *user_namespace;
-+ struct dentry *dentry;
-+};
-+
-+/**
-+ * struct kdbus_user - resource accounting for users
-+ * @kref: Reference counter
-+ * @domain: Domain of the user
-+ * @id: Index of this user
-+ * @uid: UID of the user
-+ * @buses: Number of buses the user has created
-+ * @connections: Number of connections the user has created
-+ */
-+struct kdbus_user {
-+ struct kref kref;
-+ struct kdbus_domain *domain;
-+ unsigned int id;
-+ kuid_t uid;
-+ atomic_t buses;
-+ atomic_t connections;
-+};
-+
-+#define kdbus_domain_from_node(_node) \
-+ container_of((_node), struct kdbus_domain, node)
-+
-+struct kdbus_domain *kdbus_domain_new(unsigned int access);
-+struct kdbus_domain *kdbus_domain_ref(struct kdbus_domain *domain);
-+struct kdbus_domain *kdbus_domain_unref(struct kdbus_domain *domain);
-+int kdbus_domain_populate(struct kdbus_domain *domain, unsigned int access);
-+
-+#define KDBUS_USER_KERNEL_ID 0 /* ID 0 is reserved for kernel accounting */
-+
-+struct kdbus_user *kdbus_user_lookup(struct kdbus_domain *domain, kuid_t uid);
-+struct kdbus_user *kdbus_user_ref(struct kdbus_user *u);
-+struct kdbus_user *kdbus_user_unref(struct kdbus_user *u);
-+
-+#endif
-diff --git a/ipc/kdbus/endpoint.c b/ipc/kdbus/endpoint.c
-new file mode 100644
-index 0000000..44e7a20
---- /dev/null
-+++ b/ipc/kdbus/endpoint.c
-@@ -0,0 +1,303 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/fs.h>
-+#include <linux/idr.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/sched.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+#include <linux/uio.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "domain.h"
-+#include "endpoint.h"
-+#include "handle.h"
-+#include "item.h"
-+#include "message.h"
-+#include "policy.h"
-+
-+static void kdbus_ep_free(struct kdbus_node *node)
-+{
-+ struct kdbus_ep *ep = container_of(node, struct kdbus_ep, node);
-+
-+ WARN_ON(!list_empty(&ep->conn_list));
-+
-+ kdbus_policy_db_clear(&ep->policy_db);
-+ kdbus_bus_unref(ep->bus);
-+ kdbus_user_unref(ep->user);
-+ kfree(ep);
-+}
-+
-+static void kdbus_ep_release(struct kdbus_node *node, bool was_active)
-+{
-+ struct kdbus_ep *ep = container_of(node, struct kdbus_ep, node);
-+
-+ /* disconnect all connections to this endpoint */
-+ for (;;) {
-+ struct kdbus_conn *conn;
-+
-+ mutex_lock(&ep->lock);
-+ conn = list_first_entry_or_null(&ep->conn_list,
-+ struct kdbus_conn,
-+ ep_entry);
-+ if (!conn) {
-+ mutex_unlock(&ep->lock);
-+ break;
-+ }
-+
-+ /* take reference, release lock, disconnect without lock */
-+ kdbus_conn_ref(conn);
-+ mutex_unlock(&ep->lock);
-+
-+ kdbus_conn_disconnect(conn, false);
-+ kdbus_conn_unref(conn);
-+ }
-+}
-+
-+/**
-+ * kdbus_ep_new() - create a new endpoint
-+ * @bus: The bus this endpoint will be created for
-+ * @name: The name of the endpoint
-+ * @access: The access flags for this node (KDBUS_MAKE_ACCESS_*)
-+ * @uid: The uid of the node
-+ * @gid: The gid of the node
-+ * @is_custom: Whether this is a custom endpoint
-+ *
-+ * This function will create a new endpoint with the given
-+ * name and properties for a given bus.
-+ *
-+ * Return: a new kdbus_ep on success, ERR_PTR on failure.
-+ */
-+struct kdbus_ep *kdbus_ep_new(struct kdbus_bus *bus, const char *name,
-+ unsigned int access, kuid_t uid, kgid_t gid,
-+ bool is_custom)
-+{
-+ struct kdbus_ep *e;
-+ int ret;
-+
-+ /*
-+ * Validate only custom endpoints names, default endpoints
-+ * with a "bus" name are created when the bus is created
-+ */
-+ if (is_custom) {
-+ ret = kdbus_verify_uid_prefix(name, bus->domain->user_namespace,
-+ uid);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+ }
-+
-+ e = kzalloc(sizeof(*e), GFP_KERNEL);
-+ if (!e)
-+ return ERR_PTR(-ENOMEM);
-+
-+ kdbus_node_init(&e->node, KDBUS_NODE_ENDPOINT);
-+
-+ e->node.free_cb = kdbus_ep_free;
-+ e->node.release_cb = kdbus_ep_release;
-+ e->node.uid = uid;
-+ e->node.gid = gid;
-+ e->node.mode = S_IRUSR | S_IWUSR;
-+ if (access & (KDBUS_MAKE_ACCESS_GROUP | KDBUS_MAKE_ACCESS_WORLD))
-+ e->node.mode |= S_IRGRP | S_IWGRP;
-+ if (access & KDBUS_MAKE_ACCESS_WORLD)
-+ e->node.mode |= S_IROTH | S_IWOTH;
-+
-+ mutex_init(&e->lock);
-+ INIT_LIST_HEAD(&e->conn_list);
-+ kdbus_policy_db_init(&e->policy_db);
-+ e->bus = kdbus_bus_ref(bus);
-+
-+ ret = kdbus_node_link(&e->node, &bus->node, name);
-+ if (ret < 0)
-+ goto exit_unref;
-+
-+ /*
-+ * Transactions on custom endpoints are never accounted on the global
-+ * user limits. Instead, for each custom endpoint, we create a custom,
-+ * unique user, which all transactions are accounted on. Regardless of
-+ * the user using that endpoint, it is always accounted on the same
-+ * user-object. This budget is not shared with ordinary users on
-+ * non-custom endpoints.
-+ */
-+ if (is_custom) {
-+ e->user = kdbus_user_lookup(bus->domain, INVALID_UID);
-+ if (IS_ERR(e->user)) {
-+ ret = PTR_ERR(e->user);
-+ e->user = NULL;
-+ goto exit_unref;
-+ }
-+ }
-+
-+ return e;
-+
-+exit_unref:
-+ kdbus_node_deactivate(&e->node);
-+ kdbus_node_unref(&e->node);
-+ return ERR_PTR(ret);
-+}
-+
-+/**
-+ * kdbus_ep_ref() - increase the reference counter of a kdbus_ep
-+ * @ep: The endpoint to reference
-+ *
-+ * Every user of an endpoint, except for its creator, must add a reference to
-+ * the kdbus_ep instance using this function.
-+ *
-+ * Return: the ep itself
-+ */
-+struct kdbus_ep *kdbus_ep_ref(struct kdbus_ep *ep)
-+{
-+ if (ep)
-+ kdbus_node_ref(&ep->node);
-+ return ep;
-+}
-+
-+/**
-+ * kdbus_ep_unref() - decrease the reference counter of a kdbus_ep
-+ * @ep: The ep to unref
-+ *
-+ * Release a reference. If the reference count drops to 0, the ep will be
-+ * freed.
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_ep *kdbus_ep_unref(struct kdbus_ep *ep)
-+{
-+ if (ep)
-+ kdbus_node_unref(&ep->node);
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_ep_is_privileged() - check whether a file is privileged
-+ * @ep: endpoint to operate on
-+ * @file: file to test
-+ *
-+ * Return: True if @file is privileged in the domain of @ep.
-+ */
-+bool kdbus_ep_is_privileged(struct kdbus_ep *ep, struct file *file)
-+{
-+ return !ep->user &&
-+ file_ns_capable(file, ep->bus->domain->user_namespace,
-+ CAP_IPC_OWNER);
-+}
-+
-+/**
-+ * kdbus_ep_is_owner() - check whether a file should be treated as bus owner
-+ * @ep: endpoint to operate on
-+ * @file: file to test
-+ *
-+ * Return: True if @file should be treated as bus owner on @ep
-+ */
-+bool kdbus_ep_is_owner(struct kdbus_ep *ep, struct file *file)
-+{
-+ return !ep->user &&
-+ (uid_eq(file->f_cred->euid, ep->bus->node.uid) ||
-+ kdbus_ep_is_privileged(ep, file));
-+}
-+
-+/**
-+ * kdbus_cmd_ep_make() - handle KDBUS_CMD_ENDPOINT_MAKE
-+ * @bus: bus to operate on
-+ * @argp: command payload
-+ *
-+ * Return: NULL or newly created endpoint on success, ERR_PTR on failure.
-+ */
-+struct kdbus_ep *kdbus_cmd_ep_make(struct kdbus_bus *bus, void __user *argp)
-+{
-+ const char *item_make_name;
-+ struct kdbus_ep *ep = NULL;
-+ struct kdbus_cmd *cmd;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_MAKE_NAME, .mandatory = true },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_MAKE_ACCESS_GROUP |
-+ KDBUS_MAKE_ACCESS_WORLD,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+ if (ret > 0)
-+ return NULL;
-+
-+ item_make_name = argv[1].item->str;
-+
-+ ep = kdbus_ep_new(bus, item_make_name, cmd->flags,
-+ current_euid(), current_egid(), true);
-+ if (IS_ERR(ep)) {
-+ ret = PTR_ERR(ep);
-+ ep = NULL;
-+ goto exit;
-+ }
-+
-+ if (!kdbus_node_activate(&ep->node)) {
-+ ret = -ESHUTDOWN;
-+ goto exit;
-+ }
-+
-+exit:
-+ ret = kdbus_args_clear(&args, ret);
-+ if (ret < 0) {
-+ if (ep) {
-+ kdbus_node_deactivate(&ep->node);
-+ kdbus_ep_unref(ep);
-+ }
-+ return ERR_PTR(ret);
-+ }
-+ return ep;
-+}
-+
-+/**
-+ * kdbus_cmd_ep_update() - handle KDBUS_CMD_ENDPOINT_UPDATE
-+ * @ep: endpoint to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_ep_update(struct kdbus_ep *ep, void __user *argp)
-+{
-+ struct kdbus_cmd *cmd;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_NAME, .multiple = true },
-+ { .type = KDBUS_ITEM_POLICY_ACCESS, .multiple = true },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ ret = kdbus_policy_set(&ep->policy_db, args.items, args.items_size,
-+ 0, true, ep);
-+ return kdbus_args_clear(&args, ret);
-+}
-diff --git a/ipc/kdbus/endpoint.h b/ipc/kdbus/endpoint.h
-new file mode 100644
-index 0000000..e0da59f
---- /dev/null
-+++ b/ipc/kdbus/endpoint.h
-@@ -0,0 +1,70 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_ENDPOINT_H
-+#define __KDBUS_ENDPOINT_H
-+
-+#include <linux/list.h>
-+#include <linux/mutex.h>
-+#include <linux/uidgid.h>
-+#include "node.h"
-+#include "policy.h"
-+
-+struct kdbus_bus;
-+struct kdbus_user;
-+
-+/**
-+ * struct kdbus_ep - endpoint to access a bus
-+ * @node: The kdbus node
-+ * @lock: Endpoint data lock
-+ * @bus: Bus behind this endpoint
-+ * @user: Custom enpoints account against an anonymous user
-+ * @policy_db: Uploaded policy
-+ * @conn_list: Connections of this endpoint
-+ *
-+ * An endpoint offers access to a bus; the default endpoint node name is "bus".
-+ * Additional custom endpoints to the same bus can be created and they can
-+ * carry their own policies/filters.
-+ */
-+struct kdbus_ep {
-+ struct kdbus_node node;
-+ struct mutex lock;
-+
-+ /* static */
-+ struct kdbus_bus *bus;
-+ struct kdbus_user *user;
-+
-+ /* protected by own locks */
-+ struct kdbus_policy_db policy_db;
-+
-+ /* protected by ep->lock */
-+ struct list_head conn_list;
-+};
-+
-+#define kdbus_ep_from_node(_node) \
-+ container_of((_node), struct kdbus_ep, node)
-+
-+struct kdbus_ep *kdbus_ep_new(struct kdbus_bus *bus, const char *name,
-+ unsigned int access, kuid_t uid, kgid_t gid,
-+ bool policy);
-+struct kdbus_ep *kdbus_ep_ref(struct kdbus_ep *ep);
-+struct kdbus_ep *kdbus_ep_unref(struct kdbus_ep *ep);
-+
-+bool kdbus_ep_is_privileged(struct kdbus_ep *ep, struct file *file);
-+bool kdbus_ep_is_owner(struct kdbus_ep *ep, struct file *file);
-+
-+struct kdbus_ep *kdbus_cmd_ep_make(struct kdbus_bus *bus, void __user *argp);
-+int kdbus_cmd_ep_update(struct kdbus_ep *ep, void __user *argp);
-+
-+#endif
-diff --git a/ipc/kdbus/fs.c b/ipc/kdbus/fs.c
-new file mode 100644
-index 0000000..09c4809
---- /dev/null
-+++ b/ipc/kdbus/fs.c
-@@ -0,0 +1,508 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/dcache.h>
-+#include <linux/fs.h>
-+#include <linux/fsnotify.h>
-+#include <linux/init.h>
-+#include <linux/ipc_namespace.h>
-+#include <linux/magic.h>
-+#include <linux/module.h>
-+#include <linux/mount.h>
-+#include <linux/mutex.h>
-+#include <linux/namei.h>
-+#include <linux/pagemap.h>
-+#include <linux/sched.h>
-+#include <linux/slab.h>
-+
-+#include "bus.h"
-+#include "domain.h"
-+#include "endpoint.h"
-+#include "fs.h"
-+#include "handle.h"
-+#include "node.h"
-+
-+#define kdbus_node_from_dentry(_dentry) \
-+ ((struct kdbus_node *)(_dentry)->d_fsdata)
-+
-+static struct inode *fs_inode_get(struct super_block *sb,
-+ struct kdbus_node *node);
-+
-+/*
-+ * Directory Management
-+ */
-+
-+static inline unsigned char kdbus_dt_type(struct kdbus_node *node)
-+{
-+ switch (node->type) {
-+ case KDBUS_NODE_DOMAIN:
-+ case KDBUS_NODE_BUS:
-+ return DT_DIR;
-+ case KDBUS_NODE_CONTROL:
-+ case KDBUS_NODE_ENDPOINT:
-+ return DT_REG;
-+ }
-+
-+ return DT_UNKNOWN;
-+}
-+
-+static int fs_dir_fop_iterate(struct file *file, struct dir_context *ctx)
-+{
-+ struct dentry *dentry = file->f_path.dentry;
-+ struct kdbus_node *parent = kdbus_node_from_dentry(dentry);
-+ struct kdbus_node *old, *next = file->private_data;
-+
-+ /*
-+ * kdbusfs directory iterator (modelled after sysfs/kernfs)
-+ * When iterating kdbusfs directories, we iterate all children of the
-+ * parent kdbus_node object. We use ctx->pos to store the hash of the
-+ * child and file->private_data to store a reference to the next node
-+ * object. If ctx->pos is not modified via llseek while you iterate a
-+ * directory, then we use the file->private_data node pointer to
-+ * directly access the next node in the tree.
-+ * However, if you directly seek on the directory, we have to find the
-+ * closest node to that position and cannot use our node pointer. This
-+ * means iterating the rb-tree to find the closest match and start over
-+ * from there.
-+ * Note that hash values are not necessarily unique. Therefore, llseek
-+ * is not guaranteed to seek to the same node that you got when you
-+ * retrieved the position. Seeking to 0, 1, 2 and >=INT_MAX is safe,
-+ * though. We could use the inode-number as position, but this would
-+ * require another rb-tree for fast access. Kernfs and others already
-+ * ignore those conflicts, so we should be fine, too.
-+ */
-+
-+ if (!dir_emit_dots(file, ctx))
-+ return 0;
-+
-+ /* acquire @next; if deactivated, or seek detected, find next node */
-+ old = next;
-+ if (next && ctx->pos == next->hash) {
-+ if (kdbus_node_acquire(next))
-+ kdbus_node_ref(next);
-+ else
-+ next = kdbus_node_next_child(parent, next);
-+ } else {
-+ next = kdbus_node_find_closest(parent, ctx->pos);
-+ }
-+ kdbus_node_unref(old);
-+
-+ while (next) {
-+ /* emit @next */
-+ file->private_data = next;
-+ ctx->pos = next->hash;
-+
-+ kdbus_node_release(next);
-+
-+ if (!dir_emit(ctx, next->name, strlen(next->name), next->id,
-+ kdbus_dt_type(next)))
-+ return 0;
-+
-+ /* find next node after @next */
-+ old = next;
-+ next = kdbus_node_next_child(parent, next);
-+ kdbus_node_unref(old);
-+ }
-+
-+ file->private_data = NULL;
-+ ctx->pos = INT_MAX;
-+
-+ return 0;
-+}
-+
-+static loff_t fs_dir_fop_llseek(struct file *file, loff_t offset, int whence)
-+{
-+ struct inode *inode = file_inode(file);
-+ loff_t ret;
-+
-+ /* protect f_off against fop_iterate */
-+ mutex_lock(&inode->i_mutex);
-+ ret = generic_file_llseek(file, offset, whence);
-+ mutex_unlock(&inode->i_mutex);
-+
-+ return ret;
-+}
-+
-+static int fs_dir_fop_release(struct inode *inode, struct file *file)
-+{
-+ kdbus_node_unref(file->private_data);
-+ return 0;
-+}
-+
-+static const struct file_operations fs_dir_fops = {
-+ .read = generic_read_dir,
-+ .iterate = fs_dir_fop_iterate,
-+ .llseek = fs_dir_fop_llseek,
-+ .release = fs_dir_fop_release,
-+};
-+
-+static struct dentry *fs_dir_iop_lookup(struct inode *dir,
-+ struct dentry *dentry,
-+ unsigned int flags)
-+{
-+ struct dentry *dnew = NULL;
-+ struct kdbus_node *parent;
-+ struct kdbus_node *node;
-+ struct inode *inode;
-+
-+ parent = kdbus_node_from_dentry(dentry->d_parent);
-+ if (!kdbus_node_acquire(parent))
-+ return NULL;
-+
-+ /* returns reference to _acquired_ child node */
-+ node = kdbus_node_find_child(parent, dentry->d_name.name);
-+ if (node) {
-+ dentry->d_fsdata = node;
-+ inode = fs_inode_get(dir->i_sb, node);
-+ if (IS_ERR(inode))
-+ dnew = ERR_CAST(inode);
-+ else
-+ dnew = d_splice_alias(inode, dentry);
-+
-+ kdbus_node_release(node);
-+ }
-+
-+ kdbus_node_release(parent);
-+ return dnew;
-+}
-+
-+static const struct inode_operations fs_dir_iops = {
-+ .permission = generic_permission,
-+ .lookup = fs_dir_iop_lookup,
-+};
-+
-+/*
-+ * Inode Management
-+ */
-+
-+static const struct inode_operations fs_inode_iops = {
-+ .permission = generic_permission,
-+};
-+
-+static struct inode *fs_inode_get(struct super_block *sb,
-+ struct kdbus_node *node)
-+{
-+ struct inode *inode;
-+
-+ inode = iget_locked(sb, node->id);
-+ if (!inode)
-+ return ERR_PTR(-ENOMEM);
-+ if (!(inode->i_state & I_NEW))
-+ return inode;
-+
-+ inode->i_private = kdbus_node_ref(node);
-+ inode->i_mapping->a_ops = &empty_aops;
-+ inode->i_mode = node->mode & S_IALLUGO;
-+ inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
-+ inode->i_uid = node->uid;
-+ inode->i_gid = node->gid;
-+
-+ switch (node->type) {
-+ case KDBUS_NODE_DOMAIN:
-+ case KDBUS_NODE_BUS:
-+ inode->i_mode |= S_IFDIR;
-+ inode->i_op = &fs_dir_iops;
-+ inode->i_fop = &fs_dir_fops;
-+ set_nlink(inode, 2);
-+ break;
-+ case KDBUS_NODE_CONTROL:
-+ case KDBUS_NODE_ENDPOINT:
-+ inode->i_mode |= S_IFREG;
-+ inode->i_op = &fs_inode_iops;
-+ inode->i_fop = &kdbus_handle_ops;
-+ break;
-+ }
-+
-+ unlock_new_inode(inode);
-+
-+ return inode;
-+}
-+
-+/*
-+ * Superblock Management
-+ */
-+
-+static int fs_super_dop_revalidate(struct dentry *dentry, unsigned int flags)
-+{
-+ struct kdbus_node *node;
-+
-+ /* Force lookup on negatives */
-+ if (!dentry->d_inode)
-+ return 0;
-+
-+ node = kdbus_node_from_dentry(dentry);
-+
-+ /* see whether the node has been removed */
-+ if (!kdbus_node_is_active(node))
-+ return 0;
-+
-+ return 1;
-+}
-+
-+static void fs_super_dop_release(struct dentry *dentry)
-+{
-+ kdbus_node_unref(dentry->d_fsdata);
-+}
-+
-+static const struct dentry_operations fs_super_dops = {
-+ .d_revalidate = fs_super_dop_revalidate,
-+ .d_release = fs_super_dop_release,
-+};
-+
-+static void fs_super_sop_evict_inode(struct inode *inode)
-+{
-+ struct kdbus_node *node = kdbus_node_from_inode(inode);
-+
-+ truncate_inode_pages_final(&inode->i_data);
-+ clear_inode(inode);
-+ kdbus_node_unref(node);
-+}
-+
-+static const struct super_operations fs_super_sops = {
-+ .statfs = simple_statfs,
-+ .drop_inode = generic_delete_inode,
-+ .evict_inode = fs_super_sop_evict_inode,
-+};
-+
-+static int fs_super_fill(struct super_block *sb)
-+{
-+ struct kdbus_domain *domain = sb->s_fs_info;
-+ struct inode *inode;
-+ int ret;
-+
-+ sb->s_blocksize = PAGE_CACHE_SIZE;
-+ sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
-+ sb->s_magic = KDBUS_SUPER_MAGIC;
-+ sb->s_maxbytes = MAX_LFS_FILESIZE;
-+ sb->s_op = &fs_super_sops;
-+ sb->s_time_gran = 1;
-+
-+ inode = fs_inode_get(sb, &domain->node);
-+ if (IS_ERR(inode))
-+ return PTR_ERR(inode);
-+
-+ sb->s_root = d_make_root(inode);
-+ if (!sb->s_root) {
-+ /* d_make_root iput()s the inode on failure */
-+ return -ENOMEM;
-+ }
-+
-+ /* sb holds domain reference */
-+ sb->s_root->d_fsdata = &domain->node;
-+ sb->s_d_op = &fs_super_dops;
-+
-+ /* sb holds root reference */
-+ domain->dentry = sb->s_root;
-+
-+ if (!kdbus_node_activate(&domain->node))
-+ return -ESHUTDOWN;
-+
-+ ret = kdbus_domain_populate(domain, KDBUS_MAKE_ACCESS_WORLD);
-+ if (ret < 0)
-+ return ret;
-+
-+ sb->s_flags |= MS_ACTIVE;
-+ return 0;
-+}
-+
-+static void fs_super_kill(struct super_block *sb)
-+{
-+ struct kdbus_domain *domain = sb->s_fs_info;
-+
-+ if (domain) {
-+ kdbus_node_deactivate(&domain->node);
-+ domain->dentry = NULL;
-+ }
-+
-+ kill_anon_super(sb);
-+ kdbus_domain_unref(domain);
-+}
-+
-+static int fs_super_set(struct super_block *sb, void *data)
-+{
-+ int ret;
-+
-+ ret = set_anon_super(sb, data);
-+ if (!ret)
-+ sb->s_fs_info = data;
-+
-+ return ret;
-+}
-+
-+static struct dentry *fs_super_mount(struct file_system_type *fs_type,
-+ int flags, const char *dev_name,
-+ void *data)
-+{
-+ struct kdbus_domain *domain;
-+ struct super_block *sb;
-+ int ret;
-+
-+ domain = kdbus_domain_new(KDBUS_MAKE_ACCESS_WORLD);
-+ if (IS_ERR(domain))
-+ return ERR_CAST(domain);
-+
-+ sb = sget(fs_type, NULL, fs_super_set, flags, domain);
-+ if (IS_ERR(sb)) {
-+ kdbus_node_deactivate(&domain->node);
-+ kdbus_domain_unref(domain);
-+ return ERR_CAST(sb);
-+ }
-+
-+ WARN_ON(sb->s_fs_info != domain);
-+ WARN_ON(sb->s_root);
-+
-+ ret = fs_super_fill(sb);
-+ if (ret < 0) {
-+ /* calls into ->kill_sb() when done */
-+ deactivate_locked_super(sb);
-+ return ERR_PTR(ret);
-+ }
-+
-+ return dget(sb->s_root);
-+}
-+
-+static struct file_system_type fs_type = {
-+ .name = KBUILD_MODNAME "fs",
-+ .owner = THIS_MODULE,
-+ .mount = fs_super_mount,
-+ .kill_sb = fs_super_kill,
-+ .fs_flags = FS_USERNS_MOUNT,
-+};
-+
-+/**
-+ * kdbus_fs_init() - register kdbus filesystem
-+ *
-+ * This registers a filesystem with the VFS layer. The filesystem is called
-+ * `KBUILD_MODNAME "fs"', which usually resolves to `kdbusfs'. The nameing
-+ * scheme allows to set KBUILD_MODNAME to "kdbus2" and you will get an
-+ * independent filesystem for developers.
-+ *
-+ * Each mount of the kdbusfs filesystem has an kdbus_domain attached.
-+ * Operations on this mount will only affect the attached domain. On each mount
-+ * a new domain is automatically created and used for this mount exclusively.
-+ * If you want to share a domain across multiple mounts, you need to bind-mount
-+ * it.
-+ *
-+ * Mounts of kdbusfs (with a different domain each) are unrelated to each other
-+ * and will never have any effect on any domain but their own.
-+ *
-+ * Return: 0 on success, negative error otherwise.
-+ */
-+int kdbus_fs_init(void)
-+{
-+ return register_filesystem(&fs_type);
-+}
-+
-+/**
-+ * kdbus_fs_exit() - unregister kdbus filesystem
-+ *
-+ * This does the reverse to kdbus_fs_init(). It unregisters the kdbusfs
-+ * filesystem from VFS and cleans up any allocated resources.
-+ */
-+void kdbus_fs_exit(void)
-+{
-+ unregister_filesystem(&fs_type);
-+}
-+
-+/* acquire domain of @node, making sure all ancestors are active */
-+static struct kdbus_domain *fs_acquire_domain(struct kdbus_node *node)
-+{
-+ struct kdbus_domain *domain;
-+ struct kdbus_node *iter;
-+
-+ /* caller must guarantee that @node is linked */
-+ for (iter = node; iter->parent; iter = iter->parent)
-+ if (!kdbus_node_is_active(iter->parent))
-+ return NULL;
-+
-+ /* root nodes are always domains */
-+ if (WARN_ON(iter->type != KDBUS_NODE_DOMAIN))
-+ return NULL;
-+
-+ domain = kdbus_domain_from_node(iter);
-+ if (!kdbus_node_acquire(&domain->node))
-+ return NULL;
-+
-+ return domain;
-+}
-+
-+/**
-+ * kdbus_fs_flush() - flush dcache entries of a node
-+ * @node: Node to flush entries of
-+ *
-+ * This flushes all VFS filesystem cache entries for a node and all its
-+ * children. This should be called whenever a node is destroyed during
-+ * runtime. It will flush the cache entries so the linked objects can be
-+ * deallocated.
-+ *
-+ * This is a no-op if you call it on active nodes (they really should stay in
-+ * cache) or on nodes with deactivated parents (flushing the parent is enough).
-+ * Furthermore, there is no need to call it on nodes whose lifetime is bound to
-+ * their parents'. In those cases, the parent-flush will always also flush the
-+ * children.
-+ */
-+void kdbus_fs_flush(struct kdbus_node *node)
-+{
-+ struct dentry *dentry, *parent_dentry = NULL;
-+ struct kdbus_domain *domain;
-+ struct qstr name;
-+
-+ /* active nodes should remain in cache */
-+ if (!kdbus_node_is_deactivated(node))
-+ return;
-+
-+ /* nodes that were never linked were never instantiated */
-+ if (!node->parent)
-+ return;
-+
-+ /* acquire domain and verify all ancestors are active */
-+ domain = fs_acquire_domain(node);
-+ if (!domain)
-+ return;
-+
-+ switch (node->type) {
-+ case KDBUS_NODE_ENDPOINT:
-+ if (WARN_ON(!node->parent || !node->parent->name))
-+ goto exit;
-+
-+ name.name = node->parent->name;
-+ name.len = strlen(node->parent->name);
-+ parent_dentry = d_hash_and_lookup(domain->dentry, &name);
-+ if (IS_ERR_OR_NULL(parent_dentry))
-+ goto exit;
-+
-+ /* fallthrough */
-+ case KDBUS_NODE_BUS:
-+ if (WARN_ON(!node->name))
-+ goto exit;
-+
-+ name.name = node->name;
-+ name.len = strlen(node->name);
-+ dentry = d_hash_and_lookup(parent_dentry ? : domain->dentry,
-+ &name);
-+ if (!IS_ERR_OR_NULL(dentry)) {
-+ d_invalidate(dentry);
-+ dput(dentry);
-+ }
-+
-+ dput(parent_dentry);
-+ break;
-+
-+ default:
-+ /* all other types are bound to their parent lifetime */
-+ break;
-+ }
-+
-+exit:
-+ kdbus_node_release(&domain->node);
-+}
-diff --git a/ipc/kdbus/fs.h b/ipc/kdbus/fs.h
-new file mode 100644
-index 0000000..62f7d6a
---- /dev/null
-+++ b/ipc/kdbus/fs.h
-@@ -0,0 +1,28 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUSFS_H
-+#define __KDBUSFS_H
-+
-+#include <linux/kernel.h>
-+
-+struct kdbus_node;
-+
-+int kdbus_fs_init(void);
-+void kdbus_fs_exit(void);
-+void kdbus_fs_flush(struct kdbus_node *node);
-+
-+#define kdbus_node_from_inode(_inode) \
-+ ((struct kdbus_node *)(_inode)->i_private)
-+
-+#endif
-diff --git a/ipc/kdbus/handle.c b/ipc/kdbus/handle.c
-new file mode 100644
-index 0000000..fc60932
---- /dev/null
-+++ b/ipc/kdbus/handle.c
-@@ -0,0 +1,691 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/file.h>
-+#include <linux/fs.h>
-+#include <linux/idr.h>
-+#include <linux/init.h>
-+#include <linux/kdev_t.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/poll.h>
-+#include <linux/rwsem.h>
-+#include <linux/sched.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+#include <linux/syscalls.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "endpoint.h"
-+#include "fs.h"
-+#include "handle.h"
-+#include "item.h"
-+#include "match.h"
-+#include "message.h"
-+#include "names.h"
-+#include "domain.h"
-+#include "policy.h"
-+
-+static int kdbus_args_verify(struct kdbus_args *args)
-+{
-+ struct kdbus_item *item;
-+ size_t i;
-+ int ret;
-+
-+ KDBUS_ITEMS_FOREACH(item, args->items, args->items_size) {
-+ struct kdbus_arg *arg = NULL;
-+
-+ if (!KDBUS_ITEM_VALID(item, args->items, args->items_size))
-+ return -EINVAL;
-+
-+ for (i = 0; i < args->argc; ++i)
-+ if (args->argv[i].type == item->type)
-+ break;
-+ if (i >= args->argc)
-+ return -EINVAL;
-+
-+ arg = &args->argv[i];
-+
-+ ret = kdbus_item_validate(item);
-+ if (ret < 0)
-+ return ret;
-+
-+ if (arg->item && !arg->multiple)
-+ return -EINVAL;
-+
-+ arg->item = item;
-+ }
-+
-+ if (!KDBUS_ITEMS_END(item, args->items, args->items_size))
-+ return -EINVAL;
-+
-+ return 0;
-+}
-+
-+static int kdbus_args_negotiate(struct kdbus_args *args)
-+{
-+ struct kdbus_item __user *user;
-+ struct kdbus_item *negotiation;
-+ size_t i, j, num;
-+
-+ /*
-+ * If KDBUS_FLAG_NEGOTIATE is set, we overwrite the flags field with
-+ * the set of supported flags. Furthermore, if an KDBUS_ITEM_NEGOTIATE
-+ * item is passed, we iterate its payload (array of u64, each set to an
-+ * item type) and clear all unsupported item-types to 0.
-+ * The caller might do this recursively, if other flags or objects are
-+ * embedded in the payload itself.
-+ */
-+
-+ if (args->cmd->flags & KDBUS_FLAG_NEGOTIATE) {
-+ if (put_user(args->allowed_flags & ~KDBUS_FLAG_NEGOTIATE,
-+ &args->user->flags))
-+ return -EFAULT;
-+ }
-+
-+ if (args->argc < 1 || args->argv[0].type != KDBUS_ITEM_NEGOTIATE ||
-+ !args->argv[0].item)
-+ return 0;
-+
-+ negotiation = args->argv[0].item;
-+ user = (struct kdbus_item __user *)
-+ ((u8 __user *)args->user +
-+ ((u8 *)negotiation - (u8 *)args->cmd));
-+ num = KDBUS_ITEM_PAYLOAD_SIZE(negotiation) / sizeof(u64);
-+
-+ for (i = 0; i < num; ++i) {
-+ for (j = 0; j < args->argc; ++j)
-+ if (negotiation->data64[i] == args->argv[j].type)
-+ break;
-+
-+ if (j < args->argc)
-+ continue;
-+
-+ /* this item is not supported, clear it out */
-+ negotiation->data64[i] = 0;
-+ if (put_user(negotiation->data64[i], &user->data64[i]))
-+ return -EFAULT;
-+ }
-+
-+ return 0;
-+}
-+
-+/**
-+ * __kdbus_args_parse() - parse payload of kdbus command
-+ * @args: object to parse data into
-+ * @is_cmd: whether this is a command or msg payload
-+ * @argp: user-space location of command payload to parse
-+ * @type_size: overall size of command payload to parse
-+ * @items_offset: offset of items array in command payload
-+ * @out: output variable to store pointer to copied payload
-+ *
-+ * This parses the ioctl payload at user-space location @argp into @args. @args
-+ * must be pre-initialized by the caller to reflect the supported flags and
-+ * items of this command. This parser will then copy the command payload into
-+ * kernel-space, verify correctness and consistency and cache pointers to parsed
-+ * items and other data in @args.
-+ *
-+ * If this function succeeded, you must call kdbus_args_clear() to release
-+ * allocated resources before destroying @args.
-+ *
-+ * This can also be used to import kdbus_msg objects. In that case, @is_cmd must
-+ * be set to 'false' and the 'return_flags' field will not be touched (as it
-+ * doesn't exist on kdbus_msg).
-+ *
-+ * Return: On failure a negative error code is returned. Otherwise, 1 is
-+ * returned if negotiation was requested, 0 if not.
-+ */
-+int __kdbus_args_parse(struct kdbus_args *args, bool is_cmd, void __user *argp,
-+ size_t type_size, size_t items_offset, void **out)
-+{
-+ u64 user_size;
-+ int ret, i;
-+
-+ ret = kdbus_copy_from_user(&user_size, argp, sizeof(user_size));
-+ if (ret < 0)
-+ return ret;
-+
-+ if (user_size < type_size)
-+ return -EINVAL;
-+ if (user_size > KDBUS_CMD_MAX_SIZE)
-+ return -EMSGSIZE;
-+
-+ if (user_size <= sizeof(args->cmd_buf)) {
-+ if (copy_from_user(args->cmd_buf, argp, user_size))
-+ return -EFAULT;
-+ args->cmd = (void*)args->cmd_buf;
-+ } else {
-+ args->cmd = memdup_user(argp, user_size);
-+ if (IS_ERR(args->cmd))
-+ return PTR_ERR(args->cmd);
-+ }
-+
-+ if (args->cmd->size != user_size) {
-+ ret = -EINVAL;
-+ goto error;
-+ }
-+
-+ if (is_cmd)
-+ args->cmd->return_flags = 0;
-+ args->user = argp;
-+ args->items = (void *)((u8 *)args->cmd + items_offset);
-+ args->items_size = args->cmd->size - items_offset;
-+ args->is_cmd = is_cmd;
-+
-+ if (args->cmd->flags & ~args->allowed_flags) {
-+ ret = -EINVAL;
-+ goto error;
-+ }
-+
-+ ret = kdbus_args_verify(args);
-+ if (ret < 0)
-+ goto error;
-+
-+ ret = kdbus_args_negotiate(args);
-+ if (ret < 0)
-+ goto error;
-+
-+ /* mandatory items must be given (but not on negotiation) */
-+ if (!(args->cmd->flags & KDBUS_FLAG_NEGOTIATE)) {
-+ for (i = 0; i < args->argc; ++i)
-+ if (args->argv[i].mandatory && !args->argv[i].item) {
-+ ret = -EINVAL;
-+ goto error;
-+ }
-+ }
-+
-+ *out = args->cmd;
-+ return !!(args->cmd->flags & KDBUS_FLAG_NEGOTIATE);
-+
-+error:
-+ return kdbus_args_clear(args, ret);
-+}
-+
-+/**
-+ * kdbus_args_clear() - release allocated command resources
-+ * @args: object to release resources of
-+ * @ret: return value of this command
-+ *
-+ * This frees all allocated resources on @args and copies the command result
-+ * flags into user-space. @ret is usually returned unchanged by this function,
-+ * so it can be used in the final 'return' statement of the command handler.
-+ *
-+ * Return: -EFAULT if return values cannot be copied into user-space, otherwise
-+ * @ret is returned unchanged.
-+ */
-+int kdbus_args_clear(struct kdbus_args *args, int ret)
-+{
-+ if (!args)
-+ return ret;
-+
-+ if (!IS_ERR_OR_NULL(args->cmd)) {
-+ if (args->is_cmd && put_user(args->cmd->return_flags,
-+ &args->user->return_flags))
-+ ret = -EFAULT;
-+ if (args->cmd != (void*)args->cmd_buf)
-+ kfree(args->cmd);
-+ args->cmd = NULL;
-+ }
-+
-+ return ret;
-+}
-+
-+/**
-+ * enum kdbus_handle_type - type an handle can be of
-+ * @KDBUS_HANDLE_NONE: no type set, yet
-+ * @KDBUS_HANDLE_BUS_OWNER: bus owner
-+ * @KDBUS_HANDLE_EP_OWNER: endpoint owner
-+ * @KDBUS_HANDLE_CONNECTED: endpoint connection after HELLO
-+ */
-+enum kdbus_handle_type {
-+ KDBUS_HANDLE_NONE,
-+ KDBUS_HANDLE_BUS_OWNER,
-+ KDBUS_HANDLE_EP_OWNER,
-+ KDBUS_HANDLE_CONNECTED,
-+};
-+
-+/**
-+ * struct kdbus_handle - handle to the kdbus system
-+ * @lock: handle lock
-+ * @type: type of this handle (KDBUS_HANDLE_*)
-+ * @bus_owner: bus this handle owns
-+ * @ep_owner: endpoint this handle owns
-+ * @conn: connection this handle owns
-+ */
-+struct kdbus_handle {
-+ struct mutex lock;
-+
-+ enum kdbus_handle_type type;
-+ union {
-+ struct kdbus_bus *bus_owner;
-+ struct kdbus_ep *ep_owner;
-+ struct kdbus_conn *conn;
-+ };
-+};
-+
-+static int kdbus_handle_open(struct inode *inode, struct file *file)
-+{
-+ struct kdbus_handle *handle;
-+ struct kdbus_node *node;
-+ int ret;
-+
-+ node = kdbus_node_from_inode(inode);
-+ if (!kdbus_node_acquire(node))
-+ return -ESHUTDOWN;
-+
-+ handle = kzalloc(sizeof(*handle), GFP_KERNEL);
-+ if (!handle) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ mutex_init(&handle->lock);
-+ handle->type = KDBUS_HANDLE_NONE;
-+
-+ file->private_data = handle;
-+ ret = 0;
-+
-+exit:
-+ kdbus_node_release(node);
-+ return ret;
-+}
-+
-+static int kdbus_handle_release(struct inode *inode, struct file *file)
-+{
-+ struct kdbus_handle *handle = file->private_data;
-+
-+ switch (handle->type) {
-+ case KDBUS_HANDLE_BUS_OWNER:
-+ if (handle->bus_owner) {
-+ kdbus_node_deactivate(&handle->bus_owner->node);
-+ kdbus_bus_unref(handle->bus_owner);
-+ }
-+ break;
-+ case KDBUS_HANDLE_EP_OWNER:
-+ if (handle->ep_owner) {
-+ kdbus_node_deactivate(&handle->ep_owner->node);
-+ kdbus_ep_unref(handle->ep_owner);
-+ }
-+ break;
-+ case KDBUS_HANDLE_CONNECTED:
-+ kdbus_conn_disconnect(handle->conn, false);
-+ kdbus_conn_unref(handle->conn);
-+ break;
-+ case KDBUS_HANDLE_NONE:
-+ /* nothing to clean up */
-+ break;
-+ }
-+
-+ kfree(handle);
-+
-+ return 0;
-+}
-+
-+static long kdbus_handle_ioctl_control(struct file *file, unsigned int cmd,
-+ void __user *argp)
-+{
-+ struct kdbus_handle *handle = file->private_data;
-+ struct kdbus_node *node = file_inode(file)->i_private;
-+ struct kdbus_domain *domain;
-+ int ret = 0;
-+
-+ if (!kdbus_node_acquire(node))
-+ return -ESHUTDOWN;
-+
-+ /*
-+ * The parent of control-nodes is always a domain, make sure to pin it
-+ * so the parent is actually valid.
-+ */
-+ domain = kdbus_domain_from_node(node->parent);
-+ if (!kdbus_node_acquire(&domain->node)) {
-+ kdbus_node_release(node);
-+ return -ESHUTDOWN;
-+ }
-+
-+ switch (cmd) {
-+ case KDBUS_CMD_BUS_MAKE: {
-+ struct kdbus_bus *bus;
-+
-+ bus = kdbus_cmd_bus_make(domain, argp);
-+ if (IS_ERR_OR_NULL(bus)) {
-+ ret = PTR_ERR_OR_ZERO(bus);
-+ break;
-+ }
-+
-+ handle->bus_owner = bus;
-+ ret = KDBUS_HANDLE_BUS_OWNER;
-+ break;
-+ }
-+
-+ default:
-+ ret = -EBADFD;
-+ break;
-+ }
-+
-+ kdbus_node_release(&domain->node);
-+ kdbus_node_release(node);
-+ return ret;
-+}
-+
-+static long kdbus_handle_ioctl_ep(struct file *file, unsigned int cmd,
-+ void __user *buf)
-+{
-+ struct kdbus_handle *handle = file->private_data;
-+ struct kdbus_node *node = file_inode(file)->i_private;
-+ struct kdbus_ep *ep, *file_ep = kdbus_ep_from_node(node);
-+ struct kdbus_bus *bus = file_ep->bus;
-+ struct kdbus_conn *conn;
-+ int ret = 0;
-+
-+ if (!kdbus_node_acquire(node))
-+ return -ESHUTDOWN;
-+
-+ switch (cmd) {
-+ case KDBUS_CMD_ENDPOINT_MAKE: {
-+ /* creating custom endpoints is a privileged operation */
-+ if (!kdbus_ep_is_owner(file_ep, file)) {
-+ ret = -EPERM;
-+ break;
-+ }
-+
-+ ep = kdbus_cmd_ep_make(bus, buf);
-+ if (IS_ERR_OR_NULL(ep)) {
-+ ret = PTR_ERR_OR_ZERO(ep);
-+ break;
-+ }
-+
-+ handle->ep_owner = ep;
-+ ret = KDBUS_HANDLE_EP_OWNER;
-+ break;
-+ }
-+
-+ case KDBUS_CMD_HELLO:
-+ conn = kdbus_cmd_hello(file_ep, file, buf);
-+ if (IS_ERR_OR_NULL(conn)) {
-+ ret = PTR_ERR_OR_ZERO(conn);
-+ break;
-+ }
-+
-+ handle->conn = conn;
-+ ret = KDBUS_HANDLE_CONNECTED;
-+ break;
-+
-+ default:
-+ ret = -EBADFD;
-+ break;
-+ }
-+
-+ kdbus_node_release(node);
-+ return ret;
-+}
-+
-+static long kdbus_handle_ioctl_ep_owner(struct file *file, unsigned int command,
-+ void __user *buf)
-+{
-+ struct kdbus_handle *handle = file->private_data;
-+ struct kdbus_ep *ep = handle->ep_owner;
-+ int ret;
-+
-+ if (!kdbus_node_acquire(&ep->node))
-+ return -ESHUTDOWN;
-+
-+ switch (command) {
-+ case KDBUS_CMD_ENDPOINT_UPDATE:
-+ ret = kdbus_cmd_ep_update(ep, buf);
-+ break;
-+ default:
-+ ret = -EBADFD;
-+ break;
-+ }
-+
-+ kdbus_node_release(&ep->node);
-+ return ret;
-+}
-+
-+static long kdbus_handle_ioctl_connected(struct file *file,
-+ unsigned int command, void __user *buf)
-+{
-+ struct kdbus_handle *handle = file->private_data;
-+ struct kdbus_conn *conn = handle->conn;
-+ struct kdbus_conn *release_conn = NULL;
-+ int ret;
-+
-+ release_conn = conn;
-+ ret = kdbus_conn_acquire(release_conn);
-+ if (ret < 0)
-+ return ret;
-+
-+ switch (command) {
-+ case KDBUS_CMD_BYEBYE:
-+ /*
-+ * BYEBYE is special; we must not acquire a connection when
-+ * calling into kdbus_conn_disconnect() or we will deadlock,
-+ * because kdbus_conn_disconnect() will wait for all acquired
-+ * references to be dropped.
-+ */
-+ kdbus_conn_release(release_conn);
-+ release_conn = NULL;
-+ ret = kdbus_cmd_byebye_unlocked(conn, buf);
-+ break;
-+ case KDBUS_CMD_NAME_ACQUIRE:
-+ ret = kdbus_cmd_name_acquire(conn, buf);
-+ break;
-+ case KDBUS_CMD_NAME_RELEASE:
-+ ret = kdbus_cmd_name_release(conn, buf);
-+ break;
-+ case KDBUS_CMD_LIST:
-+ ret = kdbus_cmd_list(conn, buf);
-+ break;
-+ case KDBUS_CMD_CONN_INFO:
-+ ret = kdbus_cmd_conn_info(conn, buf);
-+ break;
-+ case KDBUS_CMD_BUS_CREATOR_INFO:
-+ ret = kdbus_cmd_bus_creator_info(conn, buf);
-+ break;
-+ case KDBUS_CMD_UPDATE:
-+ ret = kdbus_cmd_update(conn, buf);
-+ break;
-+ case KDBUS_CMD_MATCH_ADD:
-+ ret = kdbus_cmd_match_add(conn, buf);
-+ break;
-+ case KDBUS_CMD_MATCH_REMOVE:
-+ ret = kdbus_cmd_match_remove(conn, buf);
-+ break;
-+ case KDBUS_CMD_SEND:
-+ ret = kdbus_cmd_send(conn, file, buf);
-+ break;
-+ case KDBUS_CMD_RECV:
-+ ret = kdbus_cmd_recv(conn, buf);
-+ break;
-+ case KDBUS_CMD_FREE:
-+ ret = kdbus_cmd_free(conn, buf);
-+ break;
-+ default:
-+ ret = -EBADFD;
-+ break;
-+ }
-+
-+ kdbus_conn_release(release_conn);
-+ return ret;
-+}
-+
-+static long kdbus_handle_ioctl(struct file *file, unsigned int cmd,
-+ unsigned long arg)
-+{
-+ struct kdbus_handle *handle = file->private_data;
-+ struct kdbus_node *node = kdbus_node_from_inode(file_inode(file));
-+ void __user *argp = (void __user *)arg;
-+ long ret = -EBADFD;
-+
-+ switch (cmd) {
-+ case KDBUS_CMD_BUS_MAKE:
-+ case KDBUS_CMD_ENDPOINT_MAKE:
-+ case KDBUS_CMD_HELLO:
-+ mutex_lock(&handle->lock);
-+ if (handle->type == KDBUS_HANDLE_NONE) {
-+ if (node->type == KDBUS_NODE_CONTROL)
-+ ret = kdbus_handle_ioctl_control(file, cmd,
-+ argp);
-+ else if (node->type == KDBUS_NODE_ENDPOINT)
-+ ret = kdbus_handle_ioctl_ep(file, cmd, argp);
-+
-+ if (ret > 0) {
-+ /*
-+ * The data given via open() is not sufficient
-+ * to setup a kdbus handle. Hence, we require
-+ * the user to perform a setup ioctl. This setup
-+ * can only be performed once and defines the
-+ * type of the handle. The different setup
-+ * ioctls are locked against each other so they
-+ * cannot race. Once the handle type is set,
-+ * the type-dependent ioctls are enabled. To
-+ * improve performance, we don't lock those via
-+ * handle->lock. Instead, we issue a
-+ * write-barrier before performing the
-+ * type-change, which pairs with smp_rmb() in
-+ * all handlers that access the type field. This
-+ * guarantees the handle is fully setup, if
-+ * handle->type is set. If handle->type is
-+ * unset, you must not make any assumptions
-+ * without taking handle->lock.
-+ * Note that handle->type is only set once. It
-+ * will never change afterwards.
-+ */
-+ smp_wmb();
-+ handle->type = ret;
-+ }
-+ }
-+ mutex_unlock(&handle->lock);
-+ break;
-+
-+ case KDBUS_CMD_ENDPOINT_UPDATE:
-+ case KDBUS_CMD_BYEBYE:
-+ case KDBUS_CMD_NAME_ACQUIRE:
-+ case KDBUS_CMD_NAME_RELEASE:
-+ case KDBUS_CMD_LIST:
-+ case KDBUS_CMD_CONN_INFO:
-+ case KDBUS_CMD_BUS_CREATOR_INFO:
-+ case KDBUS_CMD_UPDATE:
-+ case KDBUS_CMD_MATCH_ADD:
-+ case KDBUS_CMD_MATCH_REMOVE:
-+ case KDBUS_CMD_SEND:
-+ case KDBUS_CMD_RECV:
-+ case KDBUS_CMD_FREE: {
-+ enum kdbus_handle_type type;
-+
-+ /*
-+ * This read-barrier pairs with smp_wmb() of the handle setup.
-+ * it guarantees the handle is fully written, in case the
-+ * type has been set. It allows us to access the handle without
-+ * taking handle->lock, given the guarantee that the type is
-+ * only ever set once, and stays constant afterwards.
-+ * Furthermore, the handle object itself is not modified in any
-+ * way after the type is set. That is, the type-field is the
-+ * last field that is written on any handle. If it has not been
-+ * set, we must not access the handle here.
-+ */
-+ type = handle->type;
-+ smp_rmb();
-+
-+ if (type == KDBUS_HANDLE_EP_OWNER)
-+ ret = kdbus_handle_ioctl_ep_owner(file, cmd, argp);
-+ else if (type == KDBUS_HANDLE_CONNECTED)
-+ ret = kdbus_handle_ioctl_connected(file, cmd, argp);
-+
-+ break;
-+ }
-+ default:
-+ ret = -ENOTTY;
-+ break;
-+ }
-+
-+ return ret < 0 ? ret : 0;
-+}
-+
-+static unsigned int kdbus_handle_poll(struct file *file,
-+ struct poll_table_struct *wait)
-+{
-+ struct kdbus_handle *handle = file->private_data;
-+ enum kdbus_handle_type type;
-+ unsigned int mask = POLLOUT | POLLWRNORM;
-+
-+ /*
-+ * This pairs with smp_wmb() during handle setup. It guarantees that
-+ * _iff_ the handle type is set, handle->conn is valid. Furthermore,
-+ * _iff_ the type is set, the handle object is constant and never
-+ * changed again. If it's not set, we must not access the handle but
-+ * bail out. We also must assume no setup has taken place, yet.
-+ */
-+ type = handle->type;
-+ smp_rmb();
-+
-+ /* Only a connected endpoint can read/write data */
-+ if (type != KDBUS_HANDLE_CONNECTED)
-+ return POLLERR | POLLHUP;
-+
-+ poll_wait(file, &handle->conn->wait, wait);
-+
-+ /*
-+ * Verify the connection hasn't been deactivated _after_ adding the
-+ * wait-queue. This guarantees, that if the connection is deactivated
-+ * after we checked it, the waitqueue is signaled and we're called
-+ * again.
-+ */
-+ if (!kdbus_conn_active(handle->conn))
-+ return POLLERR | POLLHUP;
-+
-+ if (!list_empty(&handle->conn->queue.msg_list) ||
-+ atomic_read(&handle->conn->lost_count) > 0)
-+ mask |= POLLIN | POLLRDNORM;
-+
-+ return mask;
-+}
-+
-+static int kdbus_handle_mmap(struct file *file, struct vm_area_struct *vma)
-+{
-+ struct kdbus_handle *handle = file->private_data;
-+ enum kdbus_handle_type type;
-+ int ret = -EBADFD;
-+
-+ /*
-+ * This pairs with smp_wmb() during handle setup. It guarantees that
-+ * _iff_ the handle type is set, handle->conn is valid. Furthermore,
-+ * _iff_ the type is set, the handle object is constant and never
-+ * changed again. If it's not set, we must not access the handle but
-+ * bail out. We also must assume no setup has taken place, yet.
-+ */
-+ type = handle->type;
-+ smp_rmb();
-+
-+ /* Only connected handles have a pool we can map */
-+ if (type == KDBUS_HANDLE_CONNECTED)
-+ ret = kdbus_pool_mmap(handle->conn->pool, vma);
-+
-+ return ret;
-+}
-+
-+const struct file_operations kdbus_handle_ops = {
-+ .owner = THIS_MODULE,
-+ .open = kdbus_handle_open,
-+ .release = kdbus_handle_release,
-+ .poll = kdbus_handle_poll,
-+ .llseek = noop_llseek,
-+ .unlocked_ioctl = kdbus_handle_ioctl,
-+ .mmap = kdbus_handle_mmap,
-+#ifdef CONFIG_COMPAT
-+ .compat_ioctl = kdbus_handle_ioctl,
-+#endif
-+};
-diff --git a/ipc/kdbus/handle.h b/ipc/kdbus/handle.h
-new file mode 100644
-index 0000000..5dde2c1
---- /dev/null
-+++ b/ipc/kdbus/handle.h
-@@ -0,0 +1,103 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_HANDLE_H
-+#define __KDBUS_HANDLE_H
-+
-+#include <linux/fs.h>
-+#include <uapi/linux/kdbus.h>
-+
-+extern const struct file_operations kdbus_handle_ops;
-+
-+/**
-+ * kdbus_arg - information and state of a single ioctl command item
-+ * @type: item type
-+ * @item: set by the parser to the first found item of this type
-+ * @multiple: whether multiple items of this type are allowed
-+ * @mandatory: whether at least one item of this type is required
-+ *
-+ * This structure describes a single item in an ioctl command payload. The
-+ * caller has to pre-fill the type and flags, the parser will then use this
-+ * information to verify the ioctl payload. @item is set by the parser to point
-+ * to the first occurrence of the item.
-+ */
-+struct kdbus_arg {
-+ u64 type;
-+ struct kdbus_item *item;
-+ bool multiple : 1;
-+ bool mandatory : 1;
-+};
-+
-+/**
-+ * kdbus_args - information and state of ioctl command parser
-+ * @allowed_flags: set of flags this command supports
-+ * @argc: number of items in @argv
-+ * @argv: array of items this command supports
-+ * @user: set by parser to user-space location of current command
-+ * @cmd: set by parser to kernel copy of command payload
-+ * @cmd_buf: inline buf to avoid kmalloc() on small cmds
-+ * @items: points to item array in @cmd
-+ * @items_size: size of @items in bytes
-+ * @is_cmd: whether this is a command-payload or msg-payload
-+ *
-+ * This structure is used to parse ioctl command payloads on each invocation.
-+ * The ioctl handler has to pre-fill the flags and allowed items before passing
-+ * the object to kdbus_args_parse(). The parser will copy the command payload
-+ * into kernel-space and verify the correctness of the data.
-+ *
-+ * We use a 256 bytes buffer for small command payloads, to be allocated on
-+ * stack on syscall entrance.
-+ */
-+struct kdbus_args {
-+ u64 allowed_flags;
-+ size_t argc;
-+ struct kdbus_arg *argv;
-+
-+ struct kdbus_cmd __user *user;
-+ struct kdbus_cmd *cmd;
-+ u8 cmd_buf[256];
-+
-+ struct kdbus_item *items;
-+ size_t items_size;
-+ bool is_cmd : 1;
-+};
-+
-+int __kdbus_args_parse(struct kdbus_args *args, bool is_cmd, void __user *argp,
-+ size_t type_size, size_t items_offset, void **out);
-+int kdbus_args_clear(struct kdbus_args *args, int ret);
-+
-+#define kdbus_args_parse(_args, _argp, _v) \
-+ ({ \
-+ BUILD_BUG_ON(offsetof(typeof(**(_v)), size) != \
-+ offsetof(struct kdbus_cmd, size)); \
-+ BUILD_BUG_ON(offsetof(typeof(**(_v)), flags) != \
-+ offsetof(struct kdbus_cmd, flags)); \
-+ BUILD_BUG_ON(offsetof(typeof(**(_v)), return_flags) != \
-+ offsetof(struct kdbus_cmd, return_flags)); \
-+ __kdbus_args_parse((_args), 1, (_argp), sizeof(**(_v)), \
-+ offsetof(typeof(**(_v)), items), \
-+ (void **)(_v)); \
-+ })
-+
-+#define kdbus_args_parse_msg(_args, _argp, _v) \
-+ ({ \
-+ BUILD_BUG_ON(offsetof(typeof(**(_v)), size) != \
-+ offsetof(struct kdbus_cmd, size)); \
-+ BUILD_BUG_ON(offsetof(typeof(**(_v)), flags) != \
-+ offsetof(struct kdbus_cmd, flags)); \
-+ __kdbus_args_parse((_args), 0, (_argp), sizeof(**(_v)), \
-+ offsetof(typeof(**(_v)), items), \
-+ (void **)(_v)); \
-+ })
-+
-+#endif
-diff --git a/ipc/kdbus/item.c b/ipc/kdbus/item.c
-new file mode 100644
-index 0000000..ce78dba
---- /dev/null
-+++ b/ipc/kdbus/item.c
-@@ -0,0 +1,293 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/ctype.h>
-+#include <linux/fs.h>
-+#include <linux/string.h>
-+
-+#include "item.h"
-+#include "limits.h"
-+#include "util.h"
-+
-+/*
-+ * This verifies the string at position @str with size @size is properly
-+ * zero-terminated and does not contain a 0-byte but at the end.
-+ */
-+static bool kdbus_str_valid(const char *str, size_t size)
-+{
-+ return size > 0 && memchr(str, '\0', size) == str + size - 1;
-+}
-+
-+/**
-+ * kdbus_item_validate_name() - validate an item containing a name
-+ * @item: Item to validate
-+ *
-+ * Return: zero on success or an negative error code on failure
-+ */
-+int kdbus_item_validate_name(const struct kdbus_item *item)
-+{
-+ const char *name = item->str;
-+ unsigned int i;
-+ size_t len;
-+
-+ if (item->size < KDBUS_ITEM_HEADER_SIZE + 2)
-+ return -EINVAL;
-+
-+ if (item->size > KDBUS_ITEM_HEADER_SIZE +
-+ KDBUS_SYSNAME_MAX_LEN + 1)
-+ return -ENAMETOOLONG;
-+
-+ if (!kdbus_str_valid(name, KDBUS_ITEM_PAYLOAD_SIZE(item)))
-+ return -EINVAL;
-+
-+ len = strlen(name);
-+ if (len == 0)
-+ return -EINVAL;
-+
-+ for (i = 0; i < len; i++) {
-+ if (isalpha(name[i]))
-+ continue;
-+ if (isdigit(name[i]))
-+ continue;
-+ if (name[i] == '_')
-+ continue;
-+ if (i > 0 && i + 1 < len && (name[i] == '-' || name[i] == '.'))
-+ continue;
-+
-+ return -EINVAL;
-+ }
-+
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_item_validate() - validate a single item
-+ * @item: item to validate
-+ *
-+ * Return: 0 if item is valid, negative error code if not.
-+ */
-+int kdbus_item_validate(const struct kdbus_item *item)
-+{
-+ size_t payload_size = KDBUS_ITEM_PAYLOAD_SIZE(item);
-+ size_t l;
-+ int ret;
-+
-+ BUILD_BUG_ON(KDBUS_ITEM_HEADER_SIZE !=
-+ sizeof(struct kdbus_item_header));
-+
-+ if (item->size < KDBUS_ITEM_HEADER_SIZE)
-+ return -EINVAL;
-+
-+ switch (item->type) {
-+ case KDBUS_ITEM_NEGOTIATE:
-+ if (payload_size % sizeof(u64) != 0)
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_PAYLOAD_VEC:
-+ case KDBUS_ITEM_PAYLOAD_OFF:
-+ if (payload_size != sizeof(struct kdbus_vec))
-+ return -EINVAL;
-+ if (item->vec.size == 0 || item->vec.size > SIZE_MAX)
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_PAYLOAD_MEMFD:
-+ if (payload_size != sizeof(struct kdbus_memfd))
-+ return -EINVAL;
-+ if (item->memfd.size == 0 || item->memfd.size > SIZE_MAX)
-+ return -EINVAL;
-+ if (item->memfd.fd < 0)
-+ return -EBADF;
-+ break;
-+
-+ case KDBUS_ITEM_FDS:
-+ if (payload_size % sizeof(int) != 0)
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_CANCEL_FD:
-+ if (payload_size != sizeof(int))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_BLOOM_PARAMETER:
-+ if (payload_size != sizeof(struct kdbus_bloom_parameter))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_BLOOM_FILTER:
-+ /* followed by the bloom-mask, depends on the bloom-size */
-+ if (payload_size < sizeof(struct kdbus_bloom_filter))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_BLOOM_MASK:
-+ /* size depends on bloom-size of bus */
-+ break;
-+
-+ case KDBUS_ITEM_CONN_DESCRIPTION:
-+ case KDBUS_ITEM_MAKE_NAME:
-+ ret = kdbus_item_validate_name(item);
-+ if (ret < 0)
-+ return ret;
-+ break;
-+
-+ case KDBUS_ITEM_ATTACH_FLAGS_SEND:
-+ case KDBUS_ITEM_ATTACH_FLAGS_RECV:
-+ case KDBUS_ITEM_ID:
-+ case KDBUS_ITEM_DST_ID:
-+ if (payload_size != sizeof(u64))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_TIMESTAMP:
-+ if (payload_size != sizeof(struct kdbus_timestamp))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_CREDS:
-+ if (payload_size != sizeof(struct kdbus_creds))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_AUXGROUPS:
-+ if (payload_size % sizeof(u32) != 0)
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_NAME:
-+ case KDBUS_ITEM_DST_NAME:
-+ case KDBUS_ITEM_PID_COMM:
-+ case KDBUS_ITEM_TID_COMM:
-+ case KDBUS_ITEM_EXE:
-+ case KDBUS_ITEM_CMDLINE:
-+ case KDBUS_ITEM_CGROUP:
-+ case KDBUS_ITEM_SECLABEL:
-+ if (!kdbus_str_valid(item->str, payload_size))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_CAPS:
-+ if (payload_size < sizeof(u32))
-+ return -EINVAL;
-+ if (payload_size < sizeof(u32) +
-+ 4 * CAP_TO_INDEX(item->caps.last_cap) * sizeof(u32))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_AUDIT:
-+ if (payload_size != sizeof(struct kdbus_audit))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_POLICY_ACCESS:
-+ if (payload_size != sizeof(struct kdbus_policy_access))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_NAME_ADD:
-+ case KDBUS_ITEM_NAME_REMOVE:
-+ case KDBUS_ITEM_NAME_CHANGE:
-+ if (payload_size < sizeof(struct kdbus_notify_name_change))
-+ return -EINVAL;
-+ l = payload_size - offsetof(struct kdbus_notify_name_change,
-+ name);
-+ if (l > 0 && !kdbus_str_valid(item->name_change.name, l))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_ID_ADD:
-+ case KDBUS_ITEM_ID_REMOVE:
-+ if (payload_size != sizeof(struct kdbus_notify_id_change))
-+ return -EINVAL;
-+ break;
-+
-+ case KDBUS_ITEM_REPLY_TIMEOUT:
-+ case KDBUS_ITEM_REPLY_DEAD:
-+ if (payload_size != 0)
-+ return -EINVAL;
-+ break;
-+
-+ default:
-+ break;
-+ }
-+
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_items_validate() - validate items passed by user-space
-+ * @items: items to validate
-+ * @items_size: number of items
-+ *
-+ * This verifies that the passed items pointer is consistent and valid.
-+ * Furthermore, each item is checked for:
-+ * - valid "size" value
-+ * - payload is of expected type
-+ * - payload is fully included in the item
-+ * - string payloads are zero-terminated
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_items_validate(const struct kdbus_item *items, size_t items_size)
-+{
-+ const struct kdbus_item *item;
-+ int ret;
-+
-+ KDBUS_ITEMS_FOREACH(item, items, items_size) {
-+ if (!KDBUS_ITEM_VALID(item, items, items_size))
-+ return -EINVAL;
-+
-+ ret = kdbus_item_validate(item);
-+ if (ret < 0)
-+ return ret;
-+ }
-+
-+ if (!KDBUS_ITEMS_END(item, items, items_size))
-+ return -EINVAL;
-+
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_item_set() - Set item content
-+ * @item: The item to modify
-+ * @type: The item type to set (KDBUS_ITEM_*)
-+ * @data: Data to copy to item->data, may be %NULL
-+ * @len: Number of bytes in @data
-+ *
-+ * This sets type, size and data fields of an item. If @data is NULL, the data
-+ * memory is cleared.
-+ *
-+ * Note that you must align your @data memory to 8 bytes. Trailing padding (in
-+ * case @len is not 8byte aligned) is cleared by this call.
-+ *
-+ * Returns: Pointer to the following item.
-+ */
-+struct kdbus_item *kdbus_item_set(struct kdbus_item *item, u64 type,
-+ const void *data, size_t len)
-+{
-+ item->type = type;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + len;
-+
-+ if (data) {
-+ memcpy(item->data, data, len);
-+ memset(item->data + len, 0, KDBUS_ALIGN8(len) - len);
-+ } else {
-+ memset(item->data, 0, KDBUS_ALIGN8(len));
-+ }
-+
-+ return KDBUS_ITEM_NEXT(item);
-+}
-diff --git a/ipc/kdbus/item.h b/ipc/kdbus/item.h
-new file mode 100644
-index 0000000..3a7e6cc
---- /dev/null
-+++ b/ipc/kdbus/item.h
-@@ -0,0 +1,61 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_ITEM_H
-+#define __KDBUS_ITEM_H
-+
-+#include <linux/kernel.h>
-+#include <uapi/linux/kdbus.h>
-+
-+#include "util.h"
-+
-+/* generic access and iterators over a stream of items */
-+#define KDBUS_ITEM_NEXT(_i) (typeof(_i))((u8 *)(_i) + KDBUS_ALIGN8((_i)->size))
-+#define KDBUS_ITEMS_SIZE(_h, _is) ((_h)->size - offsetof(typeof(*(_h)), _is))
-+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
-+#define KDBUS_ITEM_SIZE(_s) KDBUS_ALIGN8(KDBUS_ITEM_HEADER_SIZE + (_s))
-+#define KDBUS_ITEM_PAYLOAD_SIZE(_i) ((_i)->size - KDBUS_ITEM_HEADER_SIZE)
-+
-+#define KDBUS_ITEMS_FOREACH(_i, _is, _s) \
-+ for ((_i) = (_is); \
-+ ((u8 *)(_i) < (u8 *)(_is) + (_s)) && \
-+ ((u8 *)(_i) >= (u8 *)(_is)); \
-+ (_i) = KDBUS_ITEM_NEXT(_i))
-+
-+#define KDBUS_ITEM_VALID(_i, _is, _s) \
-+ ((_i)->size >= KDBUS_ITEM_HEADER_SIZE && \
-+ (u8 *)(_i) + (_i)->size > (u8 *)(_i) && \
-+ (u8 *)(_i) + (_i)->size <= (u8 *)(_is) + (_s) && \
-+ (u8 *)(_i) >= (u8 *)(_is))
-+
-+#define KDBUS_ITEMS_END(_i, _is, _s) \
-+ ((u8 *)(_i) == ((u8 *)(_is) + KDBUS_ALIGN8(_s)))
-+
-+/**
-+ * struct kdbus_item_header - Describes the fix part of an item
-+ * @size: The total size of the item
-+ * @type: The item type, one of KDBUS_ITEM_*
-+ */
-+struct kdbus_item_header {
-+ u64 size;
-+ u64 type;
-+};
-+
-+int kdbus_item_validate_name(const struct kdbus_item *item);
-+int kdbus_item_validate(const struct kdbus_item *item);
-+int kdbus_items_validate(const struct kdbus_item *items, size_t items_size);
-+struct kdbus_item *kdbus_item_set(struct kdbus_item *item, u64 type,
-+ const void *data, size_t len);
-+
-+#endif
-diff --git a/ipc/kdbus/limits.h b/ipc/kdbus/limits.h
-new file mode 100644
-index 0000000..c54925a
---- /dev/null
-+++ b/ipc/kdbus/limits.h
-@@ -0,0 +1,61 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_DEFAULTS_H
-+#define __KDBUS_DEFAULTS_H
-+
-+#include <linux/kernel.h>
-+
-+/* maximum size of message header and items */
-+#define KDBUS_MSG_MAX_SIZE SZ_8K
-+
-+/* maximum number of memfd items per message */
-+#define KDBUS_MSG_MAX_MEMFD_ITEMS 16
-+
-+/* max size of ioctl command data */
-+#define KDBUS_CMD_MAX_SIZE SZ_32K
-+
-+/* maximum number of inflight fds in a target queue per user */
-+#define KDBUS_CONN_MAX_FDS_PER_USER 16
-+
-+/* maximum message payload size */
-+#define KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE SZ_2M
-+
-+/* maximum size of bloom bit field in bytes */
-+#define KDBUS_BUS_BLOOM_MAX_SIZE SZ_4K
-+
-+/* maximum length of well-known bus name */
-+#define KDBUS_NAME_MAX_LEN 255
-+
-+/* maximum length of bus, domain, ep name */
-+#define KDBUS_SYSNAME_MAX_LEN 63
-+
-+/* maximum number of matches per connection */
-+#define KDBUS_MATCH_MAX 256
-+
-+/* maximum number of queued messages from the same individual user */
-+#define KDBUS_CONN_MAX_MSGS 256
-+
-+/* maximum number of well-known names per connection */
-+#define KDBUS_CONN_MAX_NAMES 256
-+
-+/* maximum number of queued requests waiting for a reply */
-+#define KDBUS_CONN_MAX_REQUESTS_PENDING 128
-+
-+/* maximum number of connections per user in one domain */
-+#define KDBUS_USER_MAX_CONN 1024
-+
-+/* maximum number of buses per user in one domain */
-+#define KDBUS_USER_MAX_BUSES 16
-+
-+#endif
-diff --git a/ipc/kdbus/main.c b/ipc/kdbus/main.c
-new file mode 100644
-index 0000000..1ad4dc8
---- /dev/null
-+++ b/ipc/kdbus/main.c
-@@ -0,0 +1,114 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-+#include <linux/fs.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+
-+#include "util.h"
-+#include "fs.h"
-+#include "handle.h"
-+#include "metadata.h"
-+#include "node.h"
-+
-+/*
-+ * This is a simplified outline of the internal kdbus object relations, for
-+ * those interested in the inner life of the driver implementation.
-+ *
-+ * From a mount point's (domain's) perspective:
-+ *
-+ * struct kdbus_domain
-+ * |» struct kdbus_user *user (many, owned)
-+ * '» struct kdbus_node node (embedded)
-+ * |» struct kdbus_node children (many, referenced)
-+ * |» struct kdbus_node *parent (pinned)
-+ * '» struct kdbus_bus (many, pinned)
-+ * |» struct kdbus_node node (embedded)
-+ * '» struct kdbus_ep (many, pinned)
-+ * |» struct kdbus_node node (embedded)
-+ * |» struct kdbus_bus *bus (pinned)
-+ * |» struct kdbus_conn conn_list (many, pinned)
-+ * | |» struct kdbus_ep *ep (pinned)
-+ * | |» struct kdbus_name_entry *activator_of (owned)
-+ * | |» struct kdbus_match_db *match_db (owned)
-+ * | |» struct kdbus_meta *meta (owned)
-+ * | |» struct kdbus_match_db *match_db (owned)
-+ * | | '» struct kdbus_match_entry (many, owned)
-+ * | |
-+ * | |» struct kdbus_pool *pool (owned)
-+ * | | '» struct kdbus_pool_slice *slices (many, owned)
-+ * | | '» struct kdbus_pool *pool (pinned)
-+ * | |
-+ * | |» struct kdbus_user *user (pinned)
-+ * | `» struct kdbus_queue_entry entries (many, embedded)
-+ * | |» struct kdbus_pool_slice *slice (pinned)
-+ * | |» struct kdbus_conn_reply *reply (owned)
-+ * | '» struct kdbus_user *user (pinned)
-+ * |
-+ * '» struct kdbus_user *user (pinned)
-+ * '» struct kdbus_policy_db policy_db (embedded)
-+ * |» struct kdbus_policy_db_entry (many, owned)
-+ * | |» struct kdbus_conn (pinned)
-+ * | '» struct kdbus_ep (pinned)
-+ * |
-+ * '» struct kdbus_policy_db_cache_entry (many, owned)
-+ * '» struct kdbus_conn (pinned)
-+ *
-+ * For the life-time of a file descriptor derived from calling open() on a file
-+ * inside the mount point:
-+ *
-+ * struct kdbus_handle
-+ * |» struct kdbus_meta *meta (owned)
-+ * |» struct kdbus_ep *ep (pinned)
-+ * |» struct kdbus_conn *conn (owned)
-+ * '» struct kdbus_ep *ep (owned)
-+ */
-+
-+/* kdbus mount-point /sys/fs/kdbus */
-+static struct kobject *kdbus_dir;
-+
-+static int __init kdbus_init(void)
-+{
-+ int ret;
-+
-+ kdbus_dir = kobject_create_and_add(KBUILD_MODNAME, fs_kobj);
-+ if (!kdbus_dir)
-+ return -ENOMEM;
-+
-+ ret = kdbus_fs_init();
-+ if (ret < 0) {
-+ pr_err("cannot register filesystem: %d\n", ret);
-+ goto exit_dir;
-+ }
-+
-+ pr_info("initialized\n");
-+ return 0;
-+
-+exit_dir:
-+ kobject_put(kdbus_dir);
-+ return ret;
-+}
-+
-+static void __exit kdbus_exit(void)
-+{
-+ kdbus_fs_exit();
-+ kobject_put(kdbus_dir);
-+ ida_destroy(&kdbus_node_ida);
-+}
-+
-+module_init(kdbus_init);
-+module_exit(kdbus_exit);
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION("D-Bus, powerful, easy to use interprocess communication");
-+MODULE_ALIAS_FS(KBUILD_MODNAME "fs");
-diff --git a/ipc/kdbus/match.c b/ipc/kdbus/match.c
-new file mode 100644
-index 0000000..4ee6a1f
---- /dev/null
-+++ b/ipc/kdbus/match.c
-@@ -0,0 +1,546 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/fs.h>
-+#include <linux/hash.h>
-+#include <linux/init.h>
-+#include <linux/mutex.h>
-+#include <linux/sched.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "endpoint.h"
-+#include "handle.h"
-+#include "item.h"
-+#include "match.h"
-+#include "message.h"
-+#include "names.h"
-+
-+/**
-+ * struct kdbus_match_db - message filters
-+ * @entries_list: List of matches
-+ * @mdb_rwlock: Match data lock
-+ * @entries_count: Number of entries in database
-+ */
-+struct kdbus_match_db {
-+ struct list_head entries_list;
-+ struct rw_semaphore mdb_rwlock;
-+ unsigned int entries_count;
-+};
-+
-+/**
-+ * struct kdbus_match_entry - a match database entry
-+ * @cookie: User-supplied cookie to lookup the entry
-+ * @list_entry: The list entry element for the db list
-+ * @rules_list: The list head for tracking rules of this entry
-+ */
-+struct kdbus_match_entry {
-+ u64 cookie;
-+ struct list_head list_entry;
-+ struct list_head rules_list;
-+};
-+
-+/**
-+ * struct kdbus_bloom_mask - mask to match against filter
-+ * @generations: Number of generations carried
-+ * @data: Array of bloom bit fields
-+ */
-+struct kdbus_bloom_mask {
-+ u64 generations;
-+ u64 *data;
-+};
-+
-+/**
-+ * struct kdbus_match_rule - a rule appended to a match entry
-+ * @type: An item type to match against
-+ * @bloom_mask: Bloom mask to match a message's filter against, used
-+ * with KDBUS_ITEM_BLOOM_MASK
-+ * @name: Name to match against, used with KDBUS_ITEM_NAME,
-+ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE}
-+ * @old_id: ID to match against, used with
-+ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE},
-+ * KDBUS_ITEM_ID_REMOVE
-+ * @new_id: ID to match against, used with
-+ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE},
-+ * KDBUS_ITEM_ID_REMOVE
-+ * @src_id: ID to match against, used with KDBUS_ITEM_ID
-+ * @dst_id: Message destination ID, used with KDBUS_ITEM_DST_ID
-+ * @rules_entry: Entry in the entry's rules list
-+ */
-+struct kdbus_match_rule {
-+ u64 type;
-+ union {
-+ struct kdbus_bloom_mask bloom_mask;
-+ struct {
-+ char *name;
-+ u64 old_id;
-+ u64 new_id;
-+ };
-+ u64 src_id;
-+ u64 dst_id;
-+ };
-+ struct list_head rules_entry;
-+};
-+
-+static void kdbus_match_rule_free(struct kdbus_match_rule *rule)
-+{
-+ if (!rule)
-+ return;
-+
-+ switch (rule->type) {
-+ case KDBUS_ITEM_BLOOM_MASK:
-+ kfree(rule->bloom_mask.data);
-+ break;
-+
-+ case KDBUS_ITEM_NAME:
-+ case KDBUS_ITEM_NAME_ADD:
-+ case KDBUS_ITEM_NAME_REMOVE:
-+ case KDBUS_ITEM_NAME_CHANGE:
-+ kfree(rule->name);
-+ break;
-+
-+ case KDBUS_ITEM_ID:
-+ case KDBUS_ITEM_DST_ID:
-+ case KDBUS_ITEM_ID_ADD:
-+ case KDBUS_ITEM_ID_REMOVE:
-+ break;
-+
-+ default:
-+ BUG();
-+ }
-+
-+ list_del(&rule->rules_entry);
-+ kfree(rule);
-+}
-+
-+static void kdbus_match_entry_free(struct kdbus_match_entry *entry)
-+{
-+ struct kdbus_match_rule *r, *tmp;
-+
-+ if (!entry)
-+ return;
-+
-+ list_for_each_entry_safe(r, tmp, &entry->rules_list, rules_entry)
-+ kdbus_match_rule_free(r);
-+
-+ list_del(&entry->list_entry);
-+ kfree(entry);
-+}
-+
-+/**
-+ * kdbus_match_db_free() - free match db resources
-+ * @mdb: The match database
-+ */
-+void kdbus_match_db_free(struct kdbus_match_db *mdb)
-+{
-+ struct kdbus_match_entry *entry, *tmp;
-+
-+ if (!mdb)
-+ return;
-+
-+ list_for_each_entry_safe(entry, tmp, &mdb->entries_list, list_entry)
-+ kdbus_match_entry_free(entry);
-+
-+ kfree(mdb);
-+}
-+
-+/**
-+ * kdbus_match_db_new() - create a new match database
-+ *
-+ * Return: a new kdbus_match_db on success, ERR_PTR on failure.
-+ */
-+struct kdbus_match_db *kdbus_match_db_new(void)
-+{
-+ struct kdbus_match_db *d;
-+
-+ d = kzalloc(sizeof(*d), GFP_KERNEL);
-+ if (!d)
-+ return ERR_PTR(-ENOMEM);
-+
-+ init_rwsem(&d->mdb_rwlock);
-+ INIT_LIST_HEAD(&d->entries_list);
-+
-+ return d;
-+}
-+
-+static bool kdbus_match_bloom(const struct kdbus_bloom_filter *filter,
-+ const struct kdbus_bloom_mask *mask,
-+ const struct kdbus_conn *conn)
-+{
-+ size_t n = conn->ep->bus->bloom.size / sizeof(u64);
-+ const u64 *m;
-+ size_t i;
-+
-+ /*
-+ * The message's filter carries a generation identifier, the
-+ * match's mask possibly carries an array of multiple generations
-+ * of the mask. Select the mask with the closest match of the
-+ * filter's generation.
-+ */
-+ m = mask->data + (min(filter->generation, mask->generations - 1) * n);
-+
-+ /*
-+ * The message's filter contains the messages properties,
-+ * the match's mask contains the properties to look for in the
-+ * message. Check the mask bit field against the filter bit field,
-+ * if the message possibly carries the properties the connection
-+ * has subscribed to.
-+ */
-+ for (i = 0; i < n; i++)
-+ if ((filter->data[i] & m[i]) != m[i])
-+ return false;
-+
-+ return true;
-+}
-+
-+static bool kdbus_match_rule_conn(const struct kdbus_match_rule *r,
-+ struct kdbus_conn *c,
-+ const struct kdbus_staging *s)
-+{
-+ lockdep_assert_held(&c->ep->bus->name_registry->rwlock);
-+
-+ switch (r->type) {
-+ case KDBUS_ITEM_BLOOM_MASK:
-+ return kdbus_match_bloom(s->bloom_filter, &r->bloom_mask, c);
-+ case KDBUS_ITEM_ID:
-+ return r->src_id == c->id || r->src_id == KDBUS_MATCH_ID_ANY;
-+ case KDBUS_ITEM_DST_ID:
-+ return r->dst_id == s->msg->dst_id ||
-+ r->dst_id == KDBUS_MATCH_ID_ANY;
-+ case KDBUS_ITEM_NAME:
-+ return kdbus_conn_has_name(c, r->name);
-+ default:
-+ return false;
-+ }
-+}
-+
-+static bool kdbus_match_rule_kernel(const struct kdbus_match_rule *r,
-+ const struct kdbus_staging *s)
-+{
-+ struct kdbus_item *n = s->notify;
-+
-+ if (WARN_ON(!n) || n->type != r->type)
-+ return false;
-+
-+ switch (r->type) {
-+ case KDBUS_ITEM_ID_ADD:
-+ return r->new_id == KDBUS_MATCH_ID_ANY ||
-+ r->new_id == n->id_change.id;
-+ case KDBUS_ITEM_ID_REMOVE:
-+ return r->old_id == KDBUS_MATCH_ID_ANY ||
-+ r->old_id == n->id_change.id;
-+ case KDBUS_ITEM_NAME_ADD:
-+ case KDBUS_ITEM_NAME_CHANGE:
-+ case KDBUS_ITEM_NAME_REMOVE:
-+ return (r->old_id == KDBUS_MATCH_ID_ANY ||
-+ r->old_id == n->name_change.old_id.id) &&
-+ (r->new_id == KDBUS_MATCH_ID_ANY ||
-+ r->new_id == n->name_change.new_id.id) &&
-+ (!r->name || !strcmp(r->name, n->name_change.name));
-+ default:
-+ return false;
-+ }
-+}
-+
-+static bool kdbus_match_rules(const struct kdbus_match_entry *entry,
-+ struct kdbus_conn *c,
-+ const struct kdbus_staging *s)
-+{
-+ struct kdbus_match_rule *r;
-+
-+ list_for_each_entry(r, &entry->rules_list, rules_entry)
-+ if ((c && !kdbus_match_rule_conn(r, c, s)) ||
-+ (!c && !kdbus_match_rule_kernel(r, s)))
-+ return false;
-+
-+ return true;
-+}
-+
-+/**
-+ * kdbus_match_db_match_msg() - match a msg object agains the database entries
-+ * @mdb: The match database
-+ * @conn_src: The connection object originating the message
-+ * @staging: Staging object containing the message to match against
-+ *
-+ * This function will walk through all the database entries previously uploaded
-+ * with kdbus_match_db_add(). As soon as any of them has an all-satisfied rule
-+ * set, this function will return true.
-+ *
-+ * The caller must hold the registry lock of conn_src->ep->bus, in case conn_src
-+ * is non-NULL.
-+ *
-+ * Return: true if there was a matching database entry, false otherwise.
-+ */
-+bool kdbus_match_db_match_msg(struct kdbus_match_db *mdb,
-+ struct kdbus_conn *conn_src,
-+ const struct kdbus_staging *staging)
-+{
-+ struct kdbus_match_entry *entry;
-+ bool matched = false;
-+
-+ down_read(&mdb->mdb_rwlock);
-+ list_for_each_entry(entry, &mdb->entries_list, list_entry) {
-+ matched = kdbus_match_rules(entry, conn_src, staging);
-+ if (matched)
-+ break;
-+ }
-+ up_read(&mdb->mdb_rwlock);
-+
-+ return matched;
-+}
-+
-+static int kdbus_match_db_remove_unlocked(struct kdbus_match_db *mdb,
-+ u64 cookie)
-+{
-+ struct kdbus_match_entry *entry, *tmp;
-+ bool found = false;
-+
-+ list_for_each_entry_safe(entry, tmp, &mdb->entries_list, list_entry)
-+ if (entry->cookie == cookie) {
-+ kdbus_match_entry_free(entry);
-+ --mdb->entries_count;
-+ found = true;
-+ }
-+
-+ return found ? 0 : -EBADSLT;
-+}
-+
-+/**
-+ * kdbus_cmd_match_add() - handle KDBUS_CMD_MATCH_ADD
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * One call to this function (or one ioctl(KDBUS_CMD_MATCH_ADD), respectively,
-+ * adds one new database entry with n rules attached to it. Each rule is
-+ * described with an kdbus_item, and an entry is considered matching if all
-+ * its rules are satisfied.
-+ *
-+ * The items attached to a kdbus_cmd_match struct have the following mapping:
-+ *
-+ * KDBUS_ITEM_BLOOM_MASK: A bloom mask
-+ * KDBUS_ITEM_NAME: A connection's source name
-+ * KDBUS_ITEM_ID: A connection ID
-+ * KDBUS_ITEM_DST_ID: A connection ID
-+ * KDBUS_ITEM_NAME_ADD:
-+ * KDBUS_ITEM_NAME_REMOVE:
-+ * KDBUS_ITEM_NAME_CHANGE: Well-known name changes, carry
-+ * kdbus_notify_name_change
-+ * KDBUS_ITEM_ID_ADD:
-+ * KDBUS_ITEM_ID_REMOVE: Connection ID changes, carry
-+ * kdbus_notify_id_change
-+ *
-+ * For kdbus_notify_{id,name}_change structs, only the ID and name fields
-+ * are looked at when adding an entry. The flags are unused.
-+ *
-+ * Also note that KDBUS_ITEM_BLOOM_MASK, KDBUS_ITEM_NAME, KDBUS_ITEM_ID,
-+ * and KDBUS_ITEM_DST_ID are used to match messages from userspace, while the
-+ * others apply to kernel-generated notifications.
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_match_add(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_match_db *mdb = conn->match_db;
-+ struct kdbus_match_entry *entry = NULL;
-+ struct kdbus_cmd_match *cmd;
-+ struct kdbus_item *item;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_BLOOM_MASK, .multiple = true },
-+ { .type = KDBUS_ITEM_NAME, .multiple = true },
-+ { .type = KDBUS_ITEM_ID, .multiple = true },
-+ { .type = KDBUS_ITEM_DST_ID, .multiple = true },
-+ { .type = KDBUS_ITEM_NAME_ADD, .multiple = true },
-+ { .type = KDBUS_ITEM_NAME_REMOVE, .multiple = true },
-+ { .type = KDBUS_ITEM_NAME_CHANGE, .multiple = true },
-+ { .type = KDBUS_ITEM_ID_ADD, .multiple = true },
-+ { .type = KDBUS_ITEM_ID_REMOVE, .multiple = true },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_MATCH_REPLACE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ if (!kdbus_conn_is_ordinary(conn))
-+ return -EOPNOTSUPP;
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
-+ if (!entry) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ entry->cookie = cmd->cookie;
-+ INIT_LIST_HEAD(&entry->list_entry);
-+ INIT_LIST_HEAD(&entry->rules_list);
-+
-+ KDBUS_ITEMS_FOREACH(item, cmd->items, KDBUS_ITEMS_SIZE(cmd, items)) {
-+ struct kdbus_match_rule *rule;
-+ size_t size = item->size - offsetof(struct kdbus_item, data);
-+
-+ rule = kzalloc(sizeof(*rule), GFP_KERNEL);
-+ if (!rule) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ rule->type = item->type;
-+ INIT_LIST_HEAD(&rule->rules_entry);
-+
-+ switch (item->type) {
-+ case KDBUS_ITEM_BLOOM_MASK: {
-+ u64 bsize = conn->ep->bus->bloom.size;
-+ u64 generations;
-+ u64 remainder;
-+
-+ generations = div64_u64_rem(size, bsize, &remainder);
-+ if (size < bsize || remainder > 0) {
-+ ret = -EDOM;
-+ break;
-+ }
-+
-+ rule->bloom_mask.data = kmemdup(item->data,
-+ size, GFP_KERNEL);
-+ if (!rule->bloom_mask.data) {
-+ ret = -ENOMEM;
-+ break;
-+ }
-+
-+ rule->bloom_mask.generations = generations;
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_NAME:
-+ if (!kdbus_name_is_valid(item->str, false)) {
-+ ret = -EINVAL;
-+ break;
-+ }
-+
-+ rule->name = kstrdup(item->str, GFP_KERNEL);
-+ if (!rule->name)
-+ ret = -ENOMEM;
-+
-+ break;
-+
-+ case KDBUS_ITEM_ID:
-+ rule->src_id = item->id;
-+ break;
-+
-+ case KDBUS_ITEM_DST_ID:
-+ rule->dst_id = item->id;
-+ break;
-+
-+ case KDBUS_ITEM_NAME_ADD:
-+ case KDBUS_ITEM_NAME_REMOVE:
-+ case KDBUS_ITEM_NAME_CHANGE:
-+ rule->old_id = item->name_change.old_id.id;
-+ rule->new_id = item->name_change.new_id.id;
-+
-+ if (size > sizeof(struct kdbus_notify_name_change)) {
-+ rule->name = kstrdup(item->name_change.name,
-+ GFP_KERNEL);
-+ if (!rule->name)
-+ ret = -ENOMEM;
-+ }
-+
-+ break;
-+
-+ case KDBUS_ITEM_ID_ADD:
-+ case KDBUS_ITEM_ID_REMOVE:
-+ if (item->type == KDBUS_ITEM_ID_ADD)
-+ rule->new_id = item->id_change.id;
-+ else
-+ rule->old_id = item->id_change.id;
-+
-+ break;
-+ }
-+
-+ if (ret < 0) {
-+ kdbus_match_rule_free(rule);
-+ goto exit;
-+ }
-+
-+ list_add_tail(&rule->rules_entry, &entry->rules_list);
-+ }
-+
-+ down_write(&mdb->mdb_rwlock);
-+
-+ /* Remove any entry that has the same cookie as the current one. */
-+ if (cmd->flags & KDBUS_MATCH_REPLACE)
-+ kdbus_match_db_remove_unlocked(mdb, entry->cookie);
-+
-+ /*
-+ * If the above removal caught any entry, there will be room for the
-+ * new one.
-+ */
-+ if (++mdb->entries_count > KDBUS_MATCH_MAX) {
-+ --mdb->entries_count;
-+ ret = -EMFILE;
-+ } else {
-+ list_add_tail(&entry->list_entry, &mdb->entries_list);
-+ entry = NULL;
-+ }
-+
-+ up_write(&mdb->mdb_rwlock);
-+
-+exit:
-+ kdbus_match_entry_free(entry);
-+ return kdbus_args_clear(&args, ret);
-+}
-+
-+/**
-+ * kdbus_cmd_match_remove() - handle KDBUS_CMD_MATCH_REMOVE
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_match_remove(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_cmd_match *cmd;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ if (!kdbus_conn_is_ordinary(conn))
-+ return -EOPNOTSUPP;
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ down_write(&conn->match_db->mdb_rwlock);
-+ ret = kdbus_match_db_remove_unlocked(conn->match_db, cmd->cookie);
-+ up_write(&conn->match_db->mdb_rwlock);
-+
-+ return kdbus_args_clear(&args, ret);
-+}
-diff --git a/ipc/kdbus/match.h b/ipc/kdbus/match.h
-new file mode 100644
-index 0000000..ceb492f
---- /dev/null
-+++ b/ipc/kdbus/match.h
-@@ -0,0 +1,35 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_MATCH_H
-+#define __KDBUS_MATCH_H
-+
-+struct kdbus_conn;
-+struct kdbus_match_db;
-+struct kdbus_staging;
-+
-+struct kdbus_match_db *kdbus_match_db_new(void);
-+void kdbus_match_db_free(struct kdbus_match_db *db);
-+int kdbus_match_db_add(struct kdbus_conn *conn,
-+ struct kdbus_cmd_match *cmd);
-+int kdbus_match_db_remove(struct kdbus_conn *conn,
-+ struct kdbus_cmd_match *cmd);
-+bool kdbus_match_db_match_msg(struct kdbus_match_db *db,
-+ struct kdbus_conn *conn_src,
-+ const struct kdbus_staging *staging);
-+
-+int kdbus_cmd_match_add(struct kdbus_conn *conn, void __user *argp);
-+int kdbus_cmd_match_remove(struct kdbus_conn *conn, void __user *argp);
-+
-+#endif
-diff --git a/ipc/kdbus/message.c b/ipc/kdbus/message.c
-new file mode 100644
-index 0000000..ae565cd
---- /dev/null
-+++ b/ipc/kdbus/message.c
-@@ -0,0 +1,1040 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/capability.h>
-+#include <linux/cgroup.h>
-+#include <linux/cred.h>
-+#include <linux/file.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/sched.h>
-+#include <linux/shmem_fs.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+#include <net/sock.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "domain.h"
-+#include "endpoint.h"
-+#include "handle.h"
-+#include "item.h"
-+#include "match.h"
-+#include "message.h"
-+#include "names.h"
-+#include "policy.h"
-+
-+static const char * const zeros = "\0\0\0\0\0\0\0";
-+
-+static struct kdbus_gaps *kdbus_gaps_new(size_t n_memfds, size_t n_fds)
-+{
-+ size_t size_offsets, size_memfds, size_fds, size;
-+ struct kdbus_gaps *gaps;
-+
-+ size_offsets = n_memfds * sizeof(*gaps->memfd_offsets);
-+ size_memfds = n_memfds * sizeof(*gaps->memfd_files);
-+ size_fds = n_fds * sizeof(*gaps->fd_files);
-+ size = sizeof(*gaps) + size_offsets + size_memfds + size_fds;
-+
-+ gaps = kzalloc(size, GFP_KERNEL);
-+ if (!gaps)
-+ return ERR_PTR(-ENOMEM);
-+
-+ kref_init(&gaps->kref);
-+ gaps->n_memfds = 0; /* we reserve n_memfds, but don't enforce them */
-+ gaps->memfd_offsets = (void *)(gaps + 1);
-+ gaps->memfd_files = (void *)((u8 *)gaps->memfd_offsets + size_offsets);
-+ gaps->n_fds = 0; /* we reserve n_fds, but don't enforce them */
-+ gaps->fd_files = (void *)((u8 *)gaps->memfd_files + size_memfds);
-+
-+ return gaps;
-+}
-+
-+static void kdbus_gaps_free(struct kref *kref)
-+{
-+ struct kdbus_gaps *gaps = container_of(kref, struct kdbus_gaps, kref);
-+ size_t i;
-+
-+ for (i = 0; i < gaps->n_fds; ++i)
-+ if (gaps->fd_files[i])
-+ fput(gaps->fd_files[i]);
-+ for (i = 0; i < gaps->n_memfds; ++i)
-+ if (gaps->memfd_files[i])
-+ fput(gaps->memfd_files[i]);
-+
-+ kfree(gaps);
-+}
-+
-+/**
-+ * kdbus_gaps_ref() - gain reference
-+ * @gaps: gaps object
-+ *
-+ * Return: @gaps is returned
-+ */
-+struct kdbus_gaps *kdbus_gaps_ref(struct kdbus_gaps *gaps)
-+{
-+ if (gaps)
-+ kref_get(&gaps->kref);
-+ return gaps;
-+}
-+
-+/**
-+ * kdbus_gaps_unref() - drop reference
-+ * @gaps: gaps object
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_gaps *kdbus_gaps_unref(struct kdbus_gaps *gaps)
-+{
-+ if (gaps)
-+ kref_put(&gaps->kref, kdbus_gaps_free);
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_gaps_install() - install file-descriptors
-+ * @gaps: gaps object, or NULL
-+ * @slice: pool slice that contains the message
-+ * @out_incomplete output variable to note incomplete fds
-+ *
-+ * This function installs all file-descriptors of @gaps into the current
-+ * process and copies the file-descriptor numbers into the target pool slice.
-+ *
-+ * If the file-descriptors were only partially installed, then @out_incomplete
-+ * will be set to true. Otherwise, it's set to false.
-+ *
-+ * Return: 0 on success, negative error code on failure
-+ */
-+int kdbus_gaps_install(struct kdbus_gaps *gaps, struct kdbus_pool_slice *slice,
-+ bool *out_incomplete)
-+{
-+ bool incomplete_fds = false;
-+ struct kvec kvec;
-+ size_t i, n_fds;
-+ int ret, *fds;
-+
-+ if (!gaps) {
-+ /* nothing to do */
-+ *out_incomplete = incomplete_fds;
-+ return 0;
-+ }
-+
-+ n_fds = gaps->n_fds + gaps->n_memfds;
-+ if (n_fds < 1) {
-+ /* nothing to do */
-+ *out_incomplete = incomplete_fds;
-+ return 0;
-+ }
-+
-+ fds = kmalloc_array(n_fds, sizeof(*fds), GFP_TEMPORARY);
-+ n_fds = 0;
-+ if (!fds)
-+ return -ENOMEM;
-+
-+ /* 1) allocate fds and copy them over */
-+
-+ if (gaps->n_fds > 0) {
-+ for (i = 0; i < gaps->n_fds; ++i) {
-+ int fd;
-+
-+ fd = get_unused_fd_flags(O_CLOEXEC);
-+ if (fd < 0)
-+ incomplete_fds = true;
-+
-+ WARN_ON(!gaps->fd_files[i]);
-+
-+ fds[n_fds++] = fd < 0 ? -1 : fd;
-+ }
-+
-+ /*
-+ * The file-descriptor array can only be present once per
-+ * message. Hence, prepare all fds and then copy them over with
-+ * a single kvec.
-+ */
-+
-+ WARN_ON(!gaps->fd_offset);
-+
-+ kvec.iov_base = fds;
-+ kvec.iov_len = gaps->n_fds * sizeof(*fds);
-+ ret = kdbus_pool_slice_copy_kvec(slice, gaps->fd_offset,
-+ &kvec, 1, kvec.iov_len);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ for (i = 0; i < gaps->n_memfds; ++i) {
-+ int memfd;
-+
-+ memfd = get_unused_fd_flags(O_CLOEXEC);
-+ if (memfd < 0) {
-+ incomplete_fds = true;
-+ /* memfds are initialized to -1, skip copying it */
-+ continue;
-+ }
-+
-+ fds[n_fds++] = memfd;
-+
-+ /*
-+ * memfds have to be copied individually as they each are put
-+ * into a separate item. This should not be an issue, though,
-+ * as usually there is no need to send more than one memfd per
-+ * message.
-+ */
-+
-+ WARN_ON(!gaps->memfd_offsets[i]);
-+ WARN_ON(!gaps->memfd_files[i]);
-+
-+ kvec.iov_base = &memfd;
-+ kvec.iov_len = sizeof(memfd);
-+ ret = kdbus_pool_slice_copy_kvec(slice, gaps->memfd_offsets[i],
-+ &kvec, 1, kvec.iov_len);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ /* 2) install fds now that everything was successful */
-+
-+ for (i = 0; i < gaps->n_fds; ++i)
-+ if (fds[i] >= 0)
-+ fd_install(fds[i], get_file(gaps->fd_files[i]));
-+ for (i = 0; i < gaps->n_memfds; ++i)
-+ if (fds[gaps->n_fds + i] >= 0)
-+ fd_install(fds[gaps->n_fds + i],
-+ get_file(gaps->memfd_files[i]));
-+
-+ ret = 0;
-+
-+exit:
-+ if (ret < 0)
-+ for (i = 0; i < n_fds; ++i)
-+ put_unused_fd(fds[i]);
-+ kfree(fds);
-+ *out_incomplete = incomplete_fds;
-+ return ret;
-+}
-+
-+static struct file *kdbus_get_fd(int fd)
-+{
-+ struct file *f, *ret;
-+ struct inode *inode;
-+ struct socket *sock;
-+
-+ if (fd < 0)
-+ return ERR_PTR(-EBADF);
-+
-+ f = fget_raw(fd);
-+ if (!f)
-+ return ERR_PTR(-EBADF);
-+
-+ inode = file_inode(f);
-+ sock = S_ISSOCK(inode->i_mode) ? SOCKET_I(inode) : NULL;
-+
-+ if (f->f_mode & FMODE_PATH)
-+ ret = f; /* O_PATH is always allowed */
-+ else if (f->f_op == &kdbus_handle_ops)
-+ ret = ERR_PTR(-EOPNOTSUPP); /* disallow kdbus-fd over kdbus */
-+ else if (sock && sock->sk && sock->ops && sock->ops->family == PF_UNIX)
-+ ret = ERR_PTR(-EOPNOTSUPP); /* disallow UDS over kdbus */
-+ else
-+ ret = f; /* all other are allowed */
-+
-+ if (f != ret)
-+ fput(f);
-+
-+ return ret;
-+}
-+
-+static struct file *kdbus_get_memfd(const struct kdbus_memfd *memfd)
-+{
-+ const int m = F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL;
-+ struct file *f, *ret;
-+ int s;
-+
-+ if (memfd->fd < 0)
-+ return ERR_PTR(-EBADF);
-+
-+ f = fget(memfd->fd);
-+ if (!f)
-+ return ERR_PTR(-EBADF);
-+
-+ s = shmem_get_seals(f);
-+ if (s < 0)
-+ ret = ERR_PTR(-EMEDIUMTYPE);
-+ else if ((s & m) != m)
-+ ret = ERR_PTR(-ETXTBSY);
-+ else if (memfd->start + memfd->size > (u64)i_size_read(file_inode(f)))
-+ ret = ERR_PTR(-EFAULT);
-+ else
-+ ret = f;
-+
-+ if (f != ret)
-+ fput(f);
-+
-+ return ret;
-+}
-+
-+static int kdbus_msg_examine(struct kdbus_msg *msg, struct kdbus_bus *bus,
-+ struct kdbus_cmd_send *cmd, size_t *out_n_memfds,
-+ size_t *out_n_fds, size_t *out_n_parts)
-+{
-+ struct kdbus_item *item, *fds = NULL, *bloom = NULL, *dstname = NULL;
-+ u64 n_parts, n_memfds, n_fds, vec_size;
-+
-+ /*
-+ * Step 1:
-+ * Validate the message and command parameters.
-+ */
-+
-+ /* KDBUS_PAYLOAD_KERNEL is reserved to kernel messages */
-+ if (msg->payload_type == KDBUS_PAYLOAD_KERNEL)
-+ return -EINVAL;
-+
-+ if (msg->dst_id == KDBUS_DST_ID_BROADCAST) {
-+ /* broadcasts must be marked as signals */
-+ if (!(msg->flags & KDBUS_MSG_SIGNAL))
-+ return -EBADMSG;
-+ /* broadcasts cannot have timeouts */
-+ if (msg->timeout_ns > 0)
-+ return -ENOTUNIQ;
-+ }
-+
-+ if (msg->flags & KDBUS_MSG_EXPECT_REPLY) {
-+ /* if you expect a reply, you must specify a timeout */
-+ if (msg->timeout_ns == 0)
-+ return -EINVAL;
-+ /* signals cannot have replies */
-+ if (msg->flags & KDBUS_MSG_SIGNAL)
-+ return -ENOTUNIQ;
-+ } else {
-+ /* must expect reply if sent as synchronous call */
-+ if (cmd->flags & KDBUS_SEND_SYNC_REPLY)
-+ return -EINVAL;
-+ /* cannot mark replies as signal */
-+ if (msg->cookie_reply && (msg->flags & KDBUS_MSG_SIGNAL))
-+ return -EINVAL;
-+ }
-+
-+ /*
-+ * Step 2:
-+ * Validate all passed items. While at it, select some statistics that
-+ * are required to allocate state objects later on.
-+ *
-+ * Generic item validation has already been done via
-+ * kdbus_item_validate(). Furthermore, the number of items is naturally
-+ * limited by the maximum message size. Hence, only non-generic item
-+ * checks are performed here (mainly integer overflow tests).
-+ */
-+
-+ n_parts = 0;
-+ n_memfds = 0;
-+ n_fds = 0;
-+ vec_size = 0;
-+
-+ KDBUS_ITEMS_FOREACH(item, msg->items, KDBUS_ITEMS_SIZE(msg, items)) {
-+ switch (item->type) {
-+ case KDBUS_ITEM_PAYLOAD_VEC: {
-+ void __force __user *ptr = KDBUS_PTR(item->vec.address);
-+ u64 size = item->vec.size;
-+
-+ if (vec_size + size < vec_size)
-+ return -EMSGSIZE;
-+ if (vec_size + size > KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE)
-+ return -EMSGSIZE;
-+ if (ptr && unlikely(!access_ok(VERIFY_READ, ptr, size)))
-+ return -EFAULT;
-+
-+ if (ptr || size % 8) /* data or padding */
-+ ++n_parts;
-+ break;
-+ }
-+ case KDBUS_ITEM_PAYLOAD_MEMFD: {
-+ u64 start = item->memfd.start;
-+ u64 size = item->memfd.size;
-+
-+ if (start + size < start)
-+ return -EMSGSIZE;
-+ if (n_memfds >= KDBUS_MSG_MAX_MEMFD_ITEMS)
-+ return -E2BIG;
-+
-+ ++n_memfds;
-+ if (size % 8) /* vec-padding required */
-+ ++n_parts;
-+ break;
-+ }
-+ case KDBUS_ITEM_FDS: {
-+ if (fds)
-+ return -EEXIST;
-+
-+ fds = item;
-+ n_fds = KDBUS_ITEM_PAYLOAD_SIZE(item) / sizeof(int);
-+ if (n_fds > KDBUS_CONN_MAX_FDS_PER_USER)
-+ return -EMFILE;
-+
-+ break;
-+ }
-+ case KDBUS_ITEM_BLOOM_FILTER: {
-+ u64 bloom_size;
-+
-+ if (bloom)
-+ return -EEXIST;
-+
-+ bloom = item;
-+ bloom_size = KDBUS_ITEM_PAYLOAD_SIZE(item) -
-+ offsetof(struct kdbus_bloom_filter, data);
-+ if (!KDBUS_IS_ALIGNED8(bloom_size))
-+ return -EFAULT;
-+ if (bloom_size != bus->bloom.size)
-+ return -EDOM;
-+
-+ break;
-+ }
-+ case KDBUS_ITEM_DST_NAME: {
-+ if (dstname)
-+ return -EEXIST;
-+
-+ dstname = item;
-+ if (!kdbus_name_is_valid(item->str, false))
-+ return -EINVAL;
-+ if (msg->dst_id == KDBUS_DST_ID_BROADCAST)
-+ return -EBADMSG;
-+
-+ break;
-+ }
-+ default:
-+ return -EINVAL;
-+ }
-+ }
-+
-+ /*
-+ * Step 3:
-+ * Validate that required items were actually passed, and that no item
-+ * contradicts the message flags.
-+ */
-+
-+ /* bloom filters must be attached _iff_ it's a signal */
-+ if (!(msg->flags & KDBUS_MSG_SIGNAL) != !bloom)
-+ return -EBADMSG;
-+ /* destination name is required if no ID is given */
-+ if (msg->dst_id == KDBUS_DST_ID_NAME && !dstname)
-+ return -EDESTADDRREQ;
-+ /* cannot send file-descriptors attached to broadcasts */
-+ if (msg->dst_id == KDBUS_DST_ID_BROADCAST && fds)
-+ return -ENOTUNIQ;
-+
-+ *out_n_memfds = n_memfds;
-+ *out_n_fds = n_fds;
-+ *out_n_parts = n_parts;
-+
-+ return 0;
-+}
-+
-+static bool kdbus_staging_merge_vecs(struct kdbus_staging *staging,
-+ struct kdbus_item **prev_item,
-+ struct iovec **prev_vec,
-+ const struct kdbus_item *merge)
-+{
-+ void __user *ptr = (void __user *)KDBUS_PTR(merge->vec.address);
-+ u64 padding = merge->vec.size % 8;
-+ struct kdbus_item *prev = *prev_item;
-+ struct iovec *vec = *prev_vec;
-+
-+ /* XXX: merging is disabled so far */
-+ if (0 && prev && prev->type == KDBUS_ITEM_PAYLOAD_OFF &&
-+ !merge->vec.address == !prev->vec.address) {
-+ /*
-+ * If we merge two VECs, we can always drop the second
-+ * PAYLOAD_VEC item. Hence, include its size in the previous
-+ * one.
-+ */
-+ prev->vec.size += merge->vec.size;
-+
-+ if (ptr) {
-+ /*
-+ * If we merge two data VECs, we need two iovecs to copy
-+ * the data. But the items can be easily merged by
-+ * summing their lengths.
-+ */
-+ vec = &staging->parts[staging->n_parts++];
-+ vec->iov_len = merge->vec.size;
-+ vec->iov_base = ptr;
-+ staging->n_payload += vec->iov_len;
-+ } else if (padding) {
-+ /*
-+ * If we merge two 0-vecs with the second 0-vec
-+ * requiring padding, we need to insert an iovec to copy
-+ * the 0-padding. We try merging it with the previous
-+ * 0-padding iovec. This might end up with an
-+ * iov_len==0, in which case we simply drop the iovec.
-+ */
-+ if (vec) {
-+ staging->n_payload -= vec->iov_len;
-+ vec->iov_len = prev->vec.size % 8;
-+ if (!vec->iov_len) {
-+ --staging->n_parts;
-+ vec = NULL;
-+ } else {
-+ staging->n_payload += vec->iov_len;
-+ }
-+ } else {
-+ vec = &staging->parts[staging->n_parts++];
-+ vec->iov_len = padding;
-+ vec->iov_base = (char __user *)zeros;
-+ staging->n_payload += vec->iov_len;
-+ }
-+ } else {
-+ /*
-+ * If we merge two 0-vecs with the second 0-vec having
-+ * no padding, we know the padding of the first stays
-+ * the same. Hence, @vec needs no adjustment.
-+ */
-+ }
-+
-+ /* successfully merged with previous item */
-+ merge = prev;
-+ } else {
-+ /*
-+ * If we cannot merge the payload item with the previous one,
-+ * we simply insert a new iovec for the data/padding.
-+ */
-+ if (ptr) {
-+ vec = &staging->parts[staging->n_parts++];
-+ vec->iov_len = merge->vec.size;
-+ vec->iov_base = ptr;
-+ staging->n_payload += vec->iov_len;
-+ } else if (padding) {
-+ vec = &staging->parts[staging->n_parts++];
-+ vec->iov_len = padding;
-+ vec->iov_base = (char __user *)zeros;
-+ staging->n_payload += vec->iov_len;
-+ } else {
-+ vec = NULL;
-+ }
-+ }
-+
-+ *prev_item = (struct kdbus_item *)merge;
-+ *prev_vec = vec;
-+
-+ return merge == prev;
-+}
-+
-+static int kdbus_staging_import(struct kdbus_staging *staging)
-+{
-+ struct kdbus_item *it, *item, *last, *prev_payload;
-+ struct kdbus_gaps *gaps = staging->gaps;
-+ struct kdbus_msg *msg = staging->msg;
-+ struct iovec *part, *prev_part;
-+ bool drop_item;
-+
-+ drop_item = false;
-+ last = NULL;
-+ prev_payload = NULL;
-+ prev_part = NULL;
-+
-+ /*
-+ * We modify msg->items along the way; make sure to use @item as offset
-+ * to the next item (instead of the iterator @it).
-+ */
-+ for (it = item = msg->items;
-+ it >= msg->items &&
-+ (u8 *)it < (u8 *)msg + msg->size &&
-+ (u8 *)it + it->size <= (u8 *)msg + msg->size; ) {
-+ /*
-+ * If we dropped items along the way, move current item to
-+ * front. We must not access @it afterwards, but use @item
-+ * instead!
-+ */
-+ if (it != item)
-+ memmove(item, it, it->size);
-+ it = (void *)((u8 *)it + KDBUS_ALIGN8(item->size));
-+
-+ switch (item->type) {
-+ case KDBUS_ITEM_PAYLOAD_VEC: {
-+ size_t offset = staging->n_payload;
-+
-+ if (kdbus_staging_merge_vecs(staging, &prev_payload,
-+ &prev_part, item)) {
-+ drop_item = true;
-+ } else if (item->vec.address) {
-+ /* real offset is patched later on */
-+ item->type = KDBUS_ITEM_PAYLOAD_OFF;
-+ item->vec.offset = offset;
-+ } else {
-+ item->type = KDBUS_ITEM_PAYLOAD_OFF;
-+ item->vec.offset = ~0ULL;
-+ }
-+
-+ break;
-+ }
-+ case KDBUS_ITEM_PAYLOAD_MEMFD: {
-+ struct file *f;
-+
-+ f = kdbus_get_memfd(&item->memfd);
-+ if (IS_ERR(f))
-+ return PTR_ERR(f);
-+
-+ gaps->memfd_files[gaps->n_memfds] = f;
-+ gaps->memfd_offsets[gaps->n_memfds] =
-+ (u8 *)&item->memfd.fd - (u8 *)msg;
-+ ++gaps->n_memfds;
-+
-+ /* memfds cannot be merged */
-+ prev_payload = item;
-+ prev_part = NULL;
-+
-+ /* insert padding to make following VECs aligned */
-+ if (item->memfd.size % 8) {
-+ part = &staging->parts[staging->n_parts++];
-+ part->iov_len = item->memfd.size % 8;
-+ part->iov_base = (char __user *)zeros;
-+ staging->n_payload += part->iov_len;
-+ }
-+
-+ break;
-+ }
-+ case KDBUS_ITEM_FDS: {
-+ size_t i, n_fds;
-+
-+ n_fds = KDBUS_ITEM_PAYLOAD_SIZE(item) / sizeof(int);
-+ for (i = 0; i < n_fds; ++i) {
-+ struct file *f;
-+
-+ f = kdbus_get_fd(item->fds[i]);
-+ if (IS_ERR(f))
-+ return PTR_ERR(f);
-+
-+ gaps->fd_files[gaps->n_fds++] = f;
-+ }
-+
-+ gaps->fd_offset = (u8 *)item->fds - (u8 *)msg;
-+
-+ break;
-+ }
-+ case KDBUS_ITEM_BLOOM_FILTER:
-+ staging->bloom_filter = &item->bloom_filter;
-+ break;
-+ case KDBUS_ITEM_DST_NAME:
-+ staging->dst_name = item->str;
-+ break;
-+ }
-+
-+ /* drop item if we merged it with a previous one */
-+ if (drop_item) {
-+ drop_item = false;
-+ } else {
-+ last = item;
-+ item = KDBUS_ITEM_NEXT(item);
-+ }
-+ }
-+
-+ /* adjust message size regarding dropped items */
-+ msg->size = offsetof(struct kdbus_msg, items);
-+ if (last)
-+ msg->size += ((u8 *)last - (u8 *)msg->items) + last->size;
-+
-+ return 0;
-+}
-+
-+static void kdbus_staging_reserve(struct kdbus_staging *staging)
-+{
-+ struct iovec *part;
-+
-+ part = &staging->parts[staging->n_parts++];
-+ part->iov_base = (void __user *)zeros;
-+ part->iov_len = 0;
-+}
-+
-+static struct kdbus_staging *kdbus_staging_new(struct kdbus_bus *bus,
-+ size_t n_parts,
-+ size_t msg_extra_size)
-+{
-+ const size_t reserved_parts = 5; /* see below for explanation */
-+ struct kdbus_staging *staging;
-+ int ret;
-+
-+ n_parts += reserved_parts;
-+
-+ staging = kzalloc(sizeof(*staging) + n_parts * sizeof(*staging->parts) +
-+ msg_extra_size, GFP_TEMPORARY);
-+ if (!staging)
-+ return ERR_PTR(-ENOMEM);
-+
-+ staging->msg_seqnum = atomic64_inc_return(&bus->last_message_id);
-+ staging->n_parts = 0; /* we reserve n_parts, but don't enforce them */
-+ staging->parts = (void *)(staging + 1);
-+
-+ if (msg_extra_size) /* if requested, allocate message, too */
-+ staging->msg = (void *)((u8 *)staging->parts +
-+ n_parts * sizeof(*staging->parts));
-+
-+ staging->meta_proc = kdbus_meta_proc_new();
-+ if (IS_ERR(staging->meta_proc)) {
-+ ret = PTR_ERR(staging->meta_proc);
-+ staging->meta_proc = NULL;
-+ goto error;
-+ }
-+
-+ staging->meta_conn = kdbus_meta_conn_new();
-+ if (IS_ERR(staging->meta_conn)) {
-+ ret = PTR_ERR(staging->meta_conn);
-+ staging->meta_conn = NULL;
-+ goto error;
-+ }
-+
-+ /*
-+ * Prepare iovecs to copy the message into the target pool. We use the
-+ * following iovecs:
-+ * * iovec to copy "kdbus_msg.size"
-+ * * iovec to copy "struct kdbus_msg" (minus size) plus items
-+ * * iovec for possible padding after the items
-+ * * iovec for metadata items
-+ * * iovec for possible padding after the items
-+ *
-+ * Make sure to update @reserved_parts if you add more parts here.
-+ */
-+
-+ kdbus_staging_reserve(staging); /* msg.size */
-+ kdbus_staging_reserve(staging); /* msg (minus msg.size) plus items */
-+ kdbus_staging_reserve(staging); /* msg padding */
-+ kdbus_staging_reserve(staging); /* meta */
-+ kdbus_staging_reserve(staging); /* meta padding */
-+
-+ return staging;
-+
-+error:
-+ kdbus_staging_free(staging);
-+ return ERR_PTR(ret);
-+}
-+
-+struct kdbus_staging *kdbus_staging_new_kernel(struct kdbus_bus *bus,
-+ u64 dst, u64 cookie_timeout,
-+ size_t it_size, size_t it_type)
-+{
-+ struct kdbus_staging *staging;
-+ size_t size;
-+
-+ size = offsetof(struct kdbus_msg, items) +
-+ KDBUS_ITEM_HEADER_SIZE + it_size;
-+
-+ staging = kdbus_staging_new(bus, 0, KDBUS_ALIGN8(size));
-+ if (IS_ERR(staging))
-+ return ERR_CAST(staging);
-+
-+ staging->msg->size = size;
-+ staging->msg->flags = (dst == KDBUS_DST_ID_BROADCAST) ?
-+ KDBUS_MSG_SIGNAL : 0;
-+ staging->msg->dst_id = dst;
-+ staging->msg->src_id = KDBUS_SRC_ID_KERNEL;
-+ staging->msg->payload_type = KDBUS_PAYLOAD_KERNEL;
-+ staging->msg->cookie_reply = cookie_timeout;
-+ staging->notify = staging->msg->items;
-+ staging->notify->size = KDBUS_ITEM_HEADER_SIZE + it_size;
-+ staging->notify->type = it_type;
-+
-+ return staging;
-+}
-+
-+struct kdbus_staging *kdbus_staging_new_user(struct kdbus_bus *bus,
-+ struct kdbus_cmd_send *cmd,
-+ struct kdbus_msg *msg)
-+{
-+ const size_t reserved_parts = 1; /* see below for explanation */
-+ size_t n_memfds, n_fds, n_parts;
-+ struct kdbus_staging *staging;
-+ int ret;
-+
-+ /*
-+ * Examine user-supplied message and figure out how many resources we
-+ * need to allocate in our staging area. This requires us to iterate
-+ * the message twice, but saves us from re-allocating our resources
-+ * all the time.
-+ */
-+
-+ ret = kdbus_msg_examine(msg, bus, cmd, &n_memfds, &n_fds, &n_parts);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+
-+ n_parts += reserved_parts;
-+
-+ /*
-+ * Allocate staging area with the number of required resources. Make
-+ * sure that we have enough iovecs for all required parts pre-allocated
-+ * so this will hopefully be the only memory allocation for this
-+ * message transaction.
-+ */
-+
-+ staging = kdbus_staging_new(bus, n_parts, 0);
-+ if (IS_ERR(staging))
-+ return ERR_CAST(staging);
-+
-+ staging->msg = msg;
-+
-+ /*
-+ * If the message contains memfds or fd items, we need to remember some
-+ * state so we can fill in the requested information at RECV time.
-+ * File-descriptors cannot be passed at SEND time. Hence, allocate a
-+ * gaps-object to remember that state. That gaps object is linked to
-+ * from the staging area, but will also be linked to from the message
-+ * queue of each peer. Hence, each receiver owns a reference to it, and
-+ * it will later be used to fill the 'gaps' in message that couldn't be
-+ * filled at SEND time.
-+ * Note that the 'gaps' object is read-only once the staging-allocator
-+ * returns. There might be connections receiving a queued message while
-+ * the sender still broadcasts the message to other receivers.
-+ */
-+
-+ if (n_memfds > 0 || n_fds > 0) {
-+ staging->gaps = kdbus_gaps_new(n_memfds, n_fds);
-+ if (IS_ERR(staging->gaps)) {
-+ ret = PTR_ERR(staging->gaps);
-+ staging->gaps = NULL;
-+ kdbus_staging_free(staging);
-+ return ERR_PTR(ret);
-+ }
-+ }
-+
-+ /*
-+ * kdbus_staging_new() already reserves parts for message setup. For
-+ * user-supplied messages, we add the following iovecs:
-+ * ... variable number of iovecs for payload ...
-+ * * final iovec for possible padding of payload
-+ *
-+ * Make sure to update @reserved_parts if you add more parts here.
-+ */
-+
-+ ret = kdbus_staging_import(staging); /* payload */
-+ kdbus_staging_reserve(staging); /* payload padding */
-+
-+ if (ret < 0)
-+ goto error;
-+
-+ return staging;
-+
-+error:
-+ kdbus_staging_free(staging);
-+ return ERR_PTR(ret);
-+}
-+
-+struct kdbus_staging *kdbus_staging_free(struct kdbus_staging *staging)
-+{
-+ if (!staging)
-+ return NULL;
-+
-+ kdbus_meta_conn_unref(staging->meta_conn);
-+ kdbus_meta_proc_unref(staging->meta_proc);
-+ kdbus_gaps_unref(staging->gaps);
-+ kfree(staging);
-+
-+ return NULL;
-+}
-+
-+static int kdbus_staging_collect_metadata(struct kdbus_staging *staging,
-+ struct kdbus_conn *src,
-+ struct kdbus_conn *dst,
-+ u64 *out_attach)
-+{
-+ u64 attach;
-+ int ret;
-+
-+ if (src)
-+ attach = kdbus_meta_msg_mask(src, dst);
-+ else
-+ attach = KDBUS_ATTACH_TIMESTAMP; /* metadata for kernel msgs */
-+
-+ if (src && !src->meta_fake) {
-+ ret = kdbus_meta_proc_collect(staging->meta_proc, attach);
-+ if (ret < 0)
-+ return ret;
-+ }
-+
-+ ret = kdbus_meta_conn_collect(staging->meta_conn, src,
-+ staging->msg_seqnum, attach);
-+ if (ret < 0)
-+ return ret;
-+
-+ *out_attach = attach;
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_staging_emit() - emit linearized message in target pool
-+ * @staging: staging object to create message from
-+ * @src: sender of the message (or NULL)
-+ * @dst: target connection to allocate message for
-+ *
-+ * This allocates a pool-slice for @dst and copies the message provided by
-+ * @staging into it. The new slice is then returned to the caller for further
-+ * processing. It's not linked into any queue, yet.
-+ *
-+ * Return: Newly allocated slice or ERR_PTR on failure.
-+ */
-+struct kdbus_pool_slice *kdbus_staging_emit(struct kdbus_staging *staging,
-+ struct kdbus_conn *src,
-+ struct kdbus_conn *dst)
-+{
-+ struct kdbus_item *item, *meta_items = NULL;
-+ struct kdbus_pool_slice *slice = NULL;
-+ size_t off, size, meta_size;
-+ struct iovec *v;
-+ u64 attach, msg_size;
-+ int ret;
-+
-+ /*
-+ * Step 1:
-+ * Collect metadata from @src depending on the attach-flags allowed for
-+ * @dst. Translate it into the namespaces pinned by @dst.
-+ */
-+
-+ ret = kdbus_staging_collect_metadata(staging, src, dst, &attach);
-+ if (ret < 0)
-+ goto error;
-+
-+ ret = kdbus_meta_emit(staging->meta_proc, NULL, staging->meta_conn,
-+ dst, attach, &meta_items, &meta_size);
-+ if (ret < 0)
-+ goto error;
-+
-+ /*
-+ * Step 2:
-+ * Setup iovecs for the message. See kdbus_staging_new() for allocation
-+ * of those iovecs. All reserved iovecs have been initialized with
-+ * iov_len=0 + iov_base=zeros. Furthermore, the iovecs to copy the
-+ * actual message payload have already been initialized and need not be
-+ * touched.
-+ */
-+
-+ v = staging->parts;
-+ msg_size = staging->msg->size;
-+
-+ /* msg.size */
-+ v->iov_len = sizeof(msg_size);
-+ v->iov_base = (void __user *)&msg_size;
-+ ++v;
-+
-+ /* msg (after msg.size) plus items */
-+ v->iov_len = staging->msg->size - sizeof(staging->msg->size);
-+ v->iov_base = (void __user *)((u8 *)staging->msg +
-+ sizeof(staging->msg->size));
-+ ++v;
-+
-+ /* padding after msg */
-+ v->iov_len = KDBUS_ALIGN8(staging->msg->size) - staging->msg->size;
-+ v->iov_base = (void __user *)zeros;
-+ ++v;
-+
-+ if (meta_size > 0) {
-+ /* metadata items */
-+ v->iov_len = meta_size;
-+ v->iov_base = (void __user *)meta_items;
-+ ++v;
-+
-+ /* padding after metadata */
-+ v->iov_len = KDBUS_ALIGN8(meta_size) - meta_size;
-+ v->iov_base = (void __user *)zeros;
-+ ++v;
-+
-+ msg_size = KDBUS_ALIGN8(msg_size) + meta_size;
-+ } else {
-+ /* metadata items */
-+ v->iov_len = 0;
-+ v->iov_base = (void __user *)zeros;
-+ ++v;
-+
-+ /* padding after metadata */
-+ v->iov_len = 0;
-+ v->iov_base = (void __user *)zeros;
-+ ++v;
-+ }
-+
-+ /* ... payload iovecs are already filled in ... */
-+
-+ /* compute overall size and fill in padding after payload */
-+ size = KDBUS_ALIGN8(msg_size);
-+
-+ if (staging->n_payload > 0) {
-+ size += staging->n_payload;
-+
-+ v = &staging->parts[staging->n_parts - 1];
-+ v->iov_len = KDBUS_ALIGN8(size) - size;
-+ v->iov_base = (void __user *)zeros;
-+
-+ size = KDBUS_ALIGN8(size);
-+ }
-+
-+ /*
-+ * Step 3:
-+ * The PAYLOAD_OFF items in the message contain a relative 'offset'
-+ * field that tells the receiver where to find the actual payload. This
-+ * offset is relative to the start of the message, and as such depends
-+ * on the size of the metadata items we inserted. This size is variable
-+ * and changes for each peer we send the message to. Hence, we remember
-+ * the last relative offset that was used to calculate the 'offset'
-+ * fields. For each message, we re-calculate it and patch all items, in
-+ * case it changed.
-+ */
-+
-+ off = KDBUS_ALIGN8(msg_size);
-+
-+ if (off != staging->i_payload) {
-+ KDBUS_ITEMS_FOREACH(item, staging->msg->items,
-+ KDBUS_ITEMS_SIZE(staging->msg, items)) {
-+ if (item->type != KDBUS_ITEM_PAYLOAD_OFF)
-+ continue;
-+
-+ item->vec.offset -= staging->i_payload;
-+ item->vec.offset += off;
-+ }
-+
-+ staging->i_payload = off;
-+ }
-+
-+ /*
-+ * Step 4:
-+ * Allocate pool slice and copy over all data. Make sure to properly
-+ * account on user quota.
-+ */
-+
-+ ret = kdbus_conn_quota_inc(dst, src ? src->user : NULL, size,
-+ staging->gaps ? staging->gaps->n_fds : 0);
-+ if (ret < 0)
-+ goto error;
-+
-+ slice = kdbus_pool_slice_alloc(dst->pool, size, true);
-+ if (IS_ERR(slice)) {
-+ ret = PTR_ERR(slice);
-+ slice = NULL;
-+ goto error;
-+ }
-+
-+ WARN_ON(kdbus_pool_slice_size(slice) != size);
-+
-+ ret = kdbus_pool_slice_copy_iovec(slice, 0, staging->parts,
-+ staging->n_parts, size);
-+ if (ret < 0)
-+ goto error;
-+
-+ /* all done, return slice to caller */
-+ goto exit;
-+
-+error:
-+ if (slice)
-+ kdbus_conn_quota_dec(dst, src ? src->user : NULL, size,
-+ staging->gaps ? staging->gaps->n_fds : 0);
-+ kdbus_pool_slice_release(slice);
-+ slice = ERR_PTR(ret);
-+exit:
-+ kfree(meta_items);
-+ return slice;
-+}
-diff --git a/ipc/kdbus/message.h b/ipc/kdbus/message.h
-new file mode 100644
-index 0000000..298f9c9
---- /dev/null
-+++ b/ipc/kdbus/message.h
-@@ -0,0 +1,120 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_MESSAGE_H
-+#define __KDBUS_MESSAGE_H
-+
-+#include <linux/fs.h>
-+#include <linux/kref.h>
-+#include <uapi/linux/kdbus.h>
-+
-+struct kdbus_bus;
-+struct kdbus_conn;
-+struct kdbus_meta_conn;
-+struct kdbus_meta_proc;
-+struct kdbus_pool_slice;
-+
-+/**
-+ * struct kdbus_gaps - gaps in message to be filled later
-+ * @kref: Reference counter
-+ * @n_memfd_offs: Number of memfds
-+ * @memfd_offs: Offsets of kdbus_memfd items in target slice
-+ * @n_fds: Number of fds
-+ * @fds: Array of sent fds
-+ * @fds_offset: Offset of fd-array in target slice
-+ *
-+ * The 'gaps' object is used to track data that is needed to fill gaps in a
-+ * message at RECV time. Usually, we try to compile the whole message at SEND
-+ * time. This has the advantage, that we don't have to cache any information and
-+ * can keep the memory consumption small. Furthermore, all copy operations can
-+ * be combined into a single function call, which speeds up transactions
-+ * considerably.
-+ * However, things like file-descriptors can only be fully installed at RECV
-+ * time. The gaps object tracks this data and pins it until a message is
-+ * received. The gaps object is shared between all receivers of the same
-+ * message.
-+ */
-+struct kdbus_gaps {
-+ struct kref kref;
-+
-+ /* state tracking for KDBUS_ITEM_PAYLOAD_MEMFD entries */
-+ size_t n_memfds;
-+ u64 *memfd_offsets;
-+ struct file **memfd_files;
-+
-+ /* state tracking for KDBUS_ITEM_FDS */
-+ size_t n_fds;
-+ struct file **fd_files;
-+ u64 fd_offset;
-+};
-+
-+struct kdbus_gaps *kdbus_gaps_ref(struct kdbus_gaps *gaps);
-+struct kdbus_gaps *kdbus_gaps_unref(struct kdbus_gaps *gaps);
-+int kdbus_gaps_install(struct kdbus_gaps *gaps, struct kdbus_pool_slice *slice,
-+ bool *out_incomplete);
-+
-+/**
-+ * struct kdbus_staging - staging area to import messages
-+ * @msg: User-supplied message
-+ * @gaps: Gaps-object created during import (or NULL if empty)
-+ * @msg_seqnum: Message sequence number
-+ * @notify_entry: Entry into list of kernel-generated notifications
-+ * @i_payload: Current relative index of start of payload
-+ * @n_payload: Total number of bytes needed for payload
-+ * @n_parts: Number of parts
-+ * @parts: Array of iovecs that make up the whole message
-+ * @meta_proc: Process metadata of the sender (or NULL if empty)
-+ * @meta_conn: Connection metadata of the sender (or NULL if empty)
-+ * @bloom_filter: Pointer to the bloom-item in @msg, or NULL
-+ * @dst_name: Pointer to the dst-name-item in @msg, or NULL
-+ * @notify: Pointer to the notification item in @msg, or NULL
-+ *
-+ * The kdbus_staging object is a temporary staging area to import user-supplied
-+ * messages into the kernel. It is only used during SEND and dropped once the
-+ * message is queued. Any data that cannot be collected during SEND, is
-+ * collected in a kdbus_gaps object and attached to the message queue.
-+ */
-+struct kdbus_staging {
-+ struct kdbus_msg *msg;
-+ struct kdbus_gaps *gaps;
-+ u64 msg_seqnum;
-+ struct list_head notify_entry;
-+
-+ /* crafted iovecs to copy the message */
-+ size_t i_payload;
-+ size_t n_payload;
-+ size_t n_parts;
-+ struct iovec *parts;
-+
-+ /* metadata state */
-+ struct kdbus_meta_proc *meta_proc;
-+ struct kdbus_meta_conn *meta_conn;
-+
-+ /* cached pointers into @msg */
-+ const struct kdbus_bloom_filter *bloom_filter;
-+ const char *dst_name;
-+ struct kdbus_item *notify;
-+};
-+
-+struct kdbus_staging *kdbus_staging_new_kernel(struct kdbus_bus *bus,
-+ u64 dst, u64 cookie_timeout,
-+ size_t it_size, size_t it_type);
-+struct kdbus_staging *kdbus_staging_new_user(struct kdbus_bus *bus,
-+ struct kdbus_cmd_send *cmd,
-+ struct kdbus_msg *msg);
-+struct kdbus_staging *kdbus_staging_free(struct kdbus_staging *staging);
-+struct kdbus_pool_slice *kdbus_staging_emit(struct kdbus_staging *staging,
-+ struct kdbus_conn *src,
-+ struct kdbus_conn *dst);
-+
-+#endif
-diff --git a/ipc/kdbus/metadata.c b/ipc/kdbus/metadata.c
-new file mode 100644
-index 0000000..71ca475
---- /dev/null
-+++ b/ipc/kdbus/metadata.c
-@@ -0,0 +1,1347 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/audit.h>
-+#include <linux/capability.h>
-+#include <linux/cgroup.h>
-+#include <linux/cred.h>
-+#include <linux/file.h>
-+#include <linux/fs_struct.h>
-+#include <linux/init.h>
-+#include <linux/kref.h>
-+#include <linux/mutex.h>
-+#include <linux/sched.h>
-+#include <linux/security.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+#include <linux/uidgid.h>
-+#include <linux/uio.h>
-+#include <linux/user_namespace.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "endpoint.h"
-+#include "item.h"
-+#include "message.h"
-+#include "metadata.h"
-+#include "names.h"
-+
-+/**
-+ * struct kdbus_meta_proc - Process metadata
-+ * @kref: Reference counting
-+ * @lock: Object lock
-+ * @collected: Bitmask of collected items
-+ * @valid: Bitmask of collected and valid items
-+ * @cred: Credentials
-+ * @pid: PID of process
-+ * @tgid: TGID of process
-+ * @ppid: PPID of process
-+ * @tid_comm: TID comm line
-+ * @pid_comm: PID comm line
-+ * @exe_path: Executable path
-+ * @root_path: Root-FS path
-+ * @cmdline: Command-line
-+ * @cgroup: Full cgroup path
-+ * @seclabel: Seclabel
-+ * @audit_loginuid: Audit login-UID
-+ * @audit_sessionid: Audit session-ID
-+ */
-+struct kdbus_meta_proc {
-+ struct kref kref;
-+ struct mutex lock;
-+ u64 collected;
-+ u64 valid;
-+
-+ /* KDBUS_ITEM_CREDS */
-+ /* KDBUS_ITEM_AUXGROUPS */
-+ /* KDBUS_ITEM_CAPS */
-+ const struct cred *cred;
-+
-+ /* KDBUS_ITEM_PIDS */
-+ struct pid *pid;
-+ struct pid *tgid;
-+ struct pid *ppid;
-+
-+ /* KDBUS_ITEM_TID_COMM */
-+ char tid_comm[TASK_COMM_LEN];
-+ /* KDBUS_ITEM_PID_COMM */
-+ char pid_comm[TASK_COMM_LEN];
-+
-+ /* KDBUS_ITEM_EXE */
-+ struct path exe_path;
-+ struct path root_path;
-+
-+ /* KDBUS_ITEM_CMDLINE */
-+ char *cmdline;
-+
-+ /* KDBUS_ITEM_CGROUP */
-+ char *cgroup;
-+
-+ /* KDBUS_ITEM_SECLABEL */
-+ char *seclabel;
-+
-+ /* KDBUS_ITEM_AUDIT */
-+ kuid_t audit_loginuid;
-+ unsigned int audit_sessionid;
-+};
-+
-+/**
-+ * struct kdbus_meta_conn
-+ * @kref: Reference counting
-+ * @lock: Object lock
-+ * @collected: Bitmask of collected items
-+ * @valid: Bitmask of collected and valid items
-+ * @ts: Timestamp values
-+ * @owned_names_items: Serialized items for owned names
-+ * @owned_names_size: Size of @owned_names_items
-+ * @conn_description: Connection description
-+ */
-+struct kdbus_meta_conn {
-+ struct kref kref;
-+ struct mutex lock;
-+ u64 collected;
-+ u64 valid;
-+
-+ /* KDBUS_ITEM_TIMESTAMP */
-+ struct kdbus_timestamp ts;
-+
-+ /* KDBUS_ITEM_OWNED_NAME */
-+ struct kdbus_item *owned_names_items;
-+ size_t owned_names_size;
-+
-+ /* KDBUS_ITEM_CONN_DESCRIPTION */
-+ char *conn_description;
-+};
-+
-+/* fixed size equivalent of "kdbus_caps" */
-+struct kdbus_meta_caps {
-+ u32 last_cap;
-+ struct {
-+ u32 caps[_KERNEL_CAPABILITY_U32S];
-+ } set[4];
-+};
-+
-+/**
-+ * kdbus_meta_proc_new() - Create process metadata object
-+ *
-+ * Return: Pointer to new object on success, ERR_PTR on failure.
-+ */
-+struct kdbus_meta_proc *kdbus_meta_proc_new(void)
-+{
-+ struct kdbus_meta_proc *mp;
-+
-+ mp = kzalloc(sizeof(*mp), GFP_KERNEL);
-+ if (!mp)
-+ return ERR_PTR(-ENOMEM);
-+
-+ kref_init(&mp->kref);
-+ mutex_init(&mp->lock);
-+
-+ return mp;
-+}
-+
-+static void kdbus_meta_proc_free(struct kref *kref)
-+{
-+ struct kdbus_meta_proc *mp = container_of(kref, struct kdbus_meta_proc,
-+ kref);
-+
-+ path_put(&mp->exe_path);
-+ path_put(&mp->root_path);
-+ if (mp->cred)
-+ put_cred(mp->cred);
-+ put_pid(mp->ppid);
-+ put_pid(mp->tgid);
-+ put_pid(mp->pid);
-+
-+ kfree(mp->seclabel);
-+ kfree(mp->cmdline);
-+ kfree(mp->cgroup);
-+ kfree(mp);
-+}
-+
-+/**
-+ * kdbus_meta_proc_ref() - Gain reference
-+ * @mp: Process metadata object
-+ *
-+ * Return: @mp is returned
-+ */
-+struct kdbus_meta_proc *kdbus_meta_proc_ref(struct kdbus_meta_proc *mp)
-+{
-+ if (mp)
-+ kref_get(&mp->kref);
-+ return mp;
-+}
-+
-+/**
-+ * kdbus_meta_proc_unref() - Drop reference
-+ * @mp: Process metadata object
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_meta_proc *kdbus_meta_proc_unref(struct kdbus_meta_proc *mp)
-+{
-+ if (mp)
-+ kref_put(&mp->kref, kdbus_meta_proc_free);
-+ return NULL;
-+}
-+
-+static void kdbus_meta_proc_collect_pids(struct kdbus_meta_proc *mp)
-+{
-+ struct task_struct *parent;
-+
-+ mp->pid = get_pid(task_pid(current));
-+ mp->tgid = get_pid(task_tgid(current));
-+
-+ rcu_read_lock();
-+ parent = rcu_dereference(current->real_parent);
-+ mp->ppid = get_pid(task_tgid(parent));
-+ rcu_read_unlock();
-+
-+ mp->valid |= KDBUS_ATTACH_PIDS;
-+}
-+
-+static void kdbus_meta_proc_collect_tid_comm(struct kdbus_meta_proc *mp)
-+{
-+ get_task_comm(mp->tid_comm, current);
-+ mp->valid |= KDBUS_ATTACH_TID_COMM;
-+}
-+
-+static void kdbus_meta_proc_collect_pid_comm(struct kdbus_meta_proc *mp)
-+{
-+ get_task_comm(mp->pid_comm, current->group_leader);
-+ mp->valid |= KDBUS_ATTACH_PID_COMM;
-+}
-+
-+static void kdbus_meta_proc_collect_exe(struct kdbus_meta_proc *mp)
-+{
-+ struct file *exe_file;
-+
-+ rcu_read_lock();
-+ exe_file = rcu_dereference(current->mm->exe_file);
-+ if (exe_file) {
-+ mp->exe_path = exe_file->f_path;
-+ path_get(&mp->exe_path);
-+ get_fs_root(current->fs, &mp->root_path);
-+ mp->valid |= KDBUS_ATTACH_EXE;
-+ }
-+ rcu_read_unlock();
-+}
-+
-+static int kdbus_meta_proc_collect_cmdline(struct kdbus_meta_proc *mp)
-+{
-+ struct mm_struct *mm = current->mm;
-+ char *cmdline;
-+
-+ if (!mm->arg_end)
-+ return 0;
-+
-+ cmdline = strndup_user((const char __user *)mm->arg_start,
-+ mm->arg_end - mm->arg_start);
-+ if (IS_ERR(cmdline))
-+ return PTR_ERR(cmdline);
-+
-+ mp->cmdline = cmdline;
-+ mp->valid |= KDBUS_ATTACH_CMDLINE;
-+
-+ return 0;
-+}
-+
-+static int kdbus_meta_proc_collect_cgroup(struct kdbus_meta_proc *mp)
-+{
-+#ifdef CONFIG_CGROUPS
-+ void *page;
-+ char *s;
-+
-+ page = (void *)__get_free_page(GFP_TEMPORARY);
-+ if (!page)
-+ return -ENOMEM;
-+
-+ s = task_cgroup_path(current, page, PAGE_SIZE);
-+ if (s) {
-+ mp->cgroup = kstrdup(s, GFP_KERNEL);
-+ if (!mp->cgroup) {
-+ free_page((unsigned long)page);
-+ return -ENOMEM;
-+ }
-+ }
-+
-+ free_page((unsigned long)page);
-+ mp->valid |= KDBUS_ATTACH_CGROUP;
-+#endif
-+
-+ return 0;
-+}
-+
-+static int kdbus_meta_proc_collect_seclabel(struct kdbus_meta_proc *mp)
-+{
-+#ifdef CONFIG_SECURITY
-+ char *ctx = NULL;
-+ u32 sid, len;
-+ int ret;
-+
-+ security_task_getsecid(current, &sid);
-+ ret = security_secid_to_secctx(sid, &ctx, &len);
-+ if (ret < 0) {
-+ /*
-+ * EOPNOTSUPP means no security module is active,
-+ * lets skip adding the seclabel then. This effectively
-+ * drops the SECLABEL item.
-+ */
-+ return (ret == -EOPNOTSUPP) ? 0 : ret;
-+ }
-+
-+ mp->seclabel = kstrdup(ctx, GFP_KERNEL);
-+ security_release_secctx(ctx, len);
-+ if (!mp->seclabel)
-+ return -ENOMEM;
-+
-+ mp->valid |= KDBUS_ATTACH_SECLABEL;
-+#endif
-+
-+ return 0;
-+}
-+
-+static void kdbus_meta_proc_collect_audit(struct kdbus_meta_proc *mp)
-+{
-+#ifdef CONFIG_AUDITSYSCALL
-+ mp->audit_loginuid = audit_get_loginuid(current);
-+ mp->audit_sessionid = audit_get_sessionid(current);
-+ mp->valid |= KDBUS_ATTACH_AUDIT;
-+#endif
-+}
-+
-+/**
-+ * kdbus_meta_proc_collect() - Collect process metadata
-+ * @mp: Process metadata object
-+ * @what: Attach flags to collect
-+ *
-+ * This collects process metadata from current and saves it in @mp.
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_meta_proc_collect(struct kdbus_meta_proc *mp, u64 what)
-+{
-+ int ret;
-+
-+ if (!mp || !(what & (KDBUS_ATTACH_CREDS |
-+ KDBUS_ATTACH_PIDS |
-+ KDBUS_ATTACH_AUXGROUPS |
-+ KDBUS_ATTACH_TID_COMM |
-+ KDBUS_ATTACH_PID_COMM |
-+ KDBUS_ATTACH_EXE |
-+ KDBUS_ATTACH_CMDLINE |
-+ KDBUS_ATTACH_CGROUP |
-+ KDBUS_ATTACH_CAPS |
-+ KDBUS_ATTACH_SECLABEL |
-+ KDBUS_ATTACH_AUDIT)))
-+ return 0;
-+
-+ mutex_lock(&mp->lock);
-+
-+ /* creds, auxgrps and caps share "struct cred" as context */
-+ {
-+ const u64 m_cred = KDBUS_ATTACH_CREDS |
-+ KDBUS_ATTACH_AUXGROUPS |
-+ KDBUS_ATTACH_CAPS;
-+
-+ if ((what & m_cred) && !(mp->collected & m_cred)) {
-+ mp->cred = get_current_cred();
-+ mp->valid |= m_cred;
-+ mp->collected |= m_cred;
-+ }
-+ }
-+
-+ if ((what & KDBUS_ATTACH_PIDS) &&
-+ !(mp->collected & KDBUS_ATTACH_PIDS)) {
-+ kdbus_meta_proc_collect_pids(mp);
-+ mp->collected |= KDBUS_ATTACH_PIDS;
-+ }
-+
-+ if ((what & KDBUS_ATTACH_TID_COMM) &&
-+ !(mp->collected & KDBUS_ATTACH_TID_COMM)) {
-+ kdbus_meta_proc_collect_tid_comm(mp);
-+ mp->collected |= KDBUS_ATTACH_TID_COMM;
-+ }
-+
-+ if ((what & KDBUS_ATTACH_PID_COMM) &&
-+ !(mp->collected & KDBUS_ATTACH_PID_COMM)) {
-+ kdbus_meta_proc_collect_pid_comm(mp);
-+ mp->collected |= KDBUS_ATTACH_PID_COMM;
-+ }
-+
-+ if ((what & KDBUS_ATTACH_EXE) &&
-+ !(mp->collected & KDBUS_ATTACH_EXE)) {
-+ kdbus_meta_proc_collect_exe(mp);
-+ mp->collected |= KDBUS_ATTACH_EXE;
-+ }
-+
-+ if ((what & KDBUS_ATTACH_CMDLINE) &&
-+ !(mp->collected & KDBUS_ATTACH_CMDLINE)) {
-+ ret = kdbus_meta_proc_collect_cmdline(mp);
-+ if (ret < 0)
-+ goto exit_unlock;
-+ mp->collected |= KDBUS_ATTACH_CMDLINE;
-+ }
-+
-+ if ((what & KDBUS_ATTACH_CGROUP) &&
-+ !(mp->collected & KDBUS_ATTACH_CGROUP)) {
-+ ret = kdbus_meta_proc_collect_cgroup(mp);
-+ if (ret < 0)
-+ goto exit_unlock;
-+ mp->collected |= KDBUS_ATTACH_CGROUP;
-+ }
-+
-+ if ((what & KDBUS_ATTACH_SECLABEL) &&
-+ !(mp->collected & KDBUS_ATTACH_SECLABEL)) {
-+ ret = kdbus_meta_proc_collect_seclabel(mp);
-+ if (ret < 0)
-+ goto exit_unlock;
-+ mp->collected |= KDBUS_ATTACH_SECLABEL;
-+ }
-+
-+ if ((what & KDBUS_ATTACH_AUDIT) &&
-+ !(mp->collected & KDBUS_ATTACH_AUDIT)) {
-+ kdbus_meta_proc_collect_audit(mp);
-+ mp->collected |= KDBUS_ATTACH_AUDIT;
-+ }
-+
-+ ret = 0;
-+
-+exit_unlock:
-+ mutex_unlock(&mp->lock);
-+ return ret;
-+}
-+
-+/**
-+ * kdbus_meta_fake_new() - Create fake metadata object
-+ *
-+ * Return: Pointer to new object on success, ERR_PTR on failure.
-+ */
-+struct kdbus_meta_fake *kdbus_meta_fake_new(void)
-+{
-+ struct kdbus_meta_fake *mf;
-+
-+ mf = kzalloc(sizeof(*mf), GFP_KERNEL);
-+ if (!mf)
-+ return ERR_PTR(-ENOMEM);
-+
-+ return mf;
-+}
-+
-+/**
-+ * kdbus_meta_fake_free() - Free fake metadata object
-+ * @mf: Fake metadata object
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_meta_fake *kdbus_meta_fake_free(struct kdbus_meta_fake *mf)
-+{
-+ if (mf) {
-+ put_pid(mf->ppid);
-+ put_pid(mf->tgid);
-+ put_pid(mf->pid);
-+ kfree(mf->seclabel);
-+ kfree(mf);
-+ }
-+
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_meta_fake_collect() - Fill fake metadata from faked credentials
-+ * @mf: Fake metadata object
-+ * @creds: Creds to set, may be %NULL
-+ * @pids: PIDs to set, may be %NULL
-+ * @seclabel: Seclabel to set, may be %NULL
-+ *
-+ * This function takes information stored in @creds, @pids and @seclabel and
-+ * resolves them to kernel-representations, if possible. This call uses the
-+ * current task's namespaces to resolve the given information.
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_meta_fake_collect(struct kdbus_meta_fake *mf,
-+ const struct kdbus_creds *creds,
-+ const struct kdbus_pids *pids,
-+ const char *seclabel)
-+{
-+ if (mf->valid)
-+ return -EALREADY;
-+
-+ if (creds) {
-+ struct user_namespace *ns = current_user_ns();
-+
-+ mf->uid = make_kuid(ns, creds->uid);
-+ mf->euid = make_kuid(ns, creds->euid);
-+ mf->suid = make_kuid(ns, creds->suid);
-+ mf->fsuid = make_kuid(ns, creds->fsuid);
-+
-+ mf->gid = make_kgid(ns, creds->gid);
-+ mf->egid = make_kgid(ns, creds->egid);
-+ mf->sgid = make_kgid(ns, creds->sgid);
-+ mf->fsgid = make_kgid(ns, creds->fsgid);
-+
-+ if ((creds->uid != (uid_t)-1 && !uid_valid(mf->uid)) ||
-+ (creds->euid != (uid_t)-1 && !uid_valid(mf->euid)) ||
-+ (creds->suid != (uid_t)-1 && !uid_valid(mf->suid)) ||
-+ (creds->fsuid != (uid_t)-1 && !uid_valid(mf->fsuid)) ||
-+ (creds->gid != (gid_t)-1 && !gid_valid(mf->gid)) ||
-+ (creds->egid != (gid_t)-1 && !gid_valid(mf->egid)) ||
-+ (creds->sgid != (gid_t)-1 && !gid_valid(mf->sgid)) ||
-+ (creds->fsgid != (gid_t)-1 && !gid_valid(mf->fsgid)))
-+ return -EINVAL;
-+
-+ mf->valid |= KDBUS_ATTACH_CREDS;
-+ }
-+
-+ if (pids) {
-+ mf->pid = get_pid(find_vpid(pids->tid));
-+ mf->tgid = get_pid(find_vpid(pids->pid));
-+ mf->ppid = get_pid(find_vpid(pids->ppid));
-+
-+ if ((pids->tid != 0 && !mf->pid) ||
-+ (pids->pid != 0 && !mf->tgid) ||
-+ (pids->ppid != 0 && !mf->ppid)) {
-+ put_pid(mf->pid);
-+ put_pid(mf->tgid);
-+ put_pid(mf->ppid);
-+ mf->pid = NULL;
-+ mf->tgid = NULL;
-+ mf->ppid = NULL;
-+ return -EINVAL;
-+ }
-+
-+ mf->valid |= KDBUS_ATTACH_PIDS;
-+ }
-+
-+ if (seclabel) {
-+ mf->seclabel = kstrdup(seclabel, GFP_KERNEL);
-+ if (!mf->seclabel)
-+ return -ENOMEM;
-+
-+ mf->valid |= KDBUS_ATTACH_SECLABEL;
-+ }
-+
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_meta_conn_new() - Create connection metadata object
-+ *
-+ * Return: Pointer to new object on success, ERR_PTR on failure.
-+ */
-+struct kdbus_meta_conn *kdbus_meta_conn_new(void)
-+{
-+ struct kdbus_meta_conn *mc;
-+
-+ mc = kzalloc(sizeof(*mc), GFP_KERNEL);
-+ if (!mc)
-+ return ERR_PTR(-ENOMEM);
-+
-+ kref_init(&mc->kref);
-+ mutex_init(&mc->lock);
-+
-+ return mc;
-+}
-+
-+static void kdbus_meta_conn_free(struct kref *kref)
-+{
-+ struct kdbus_meta_conn *mc =
-+ container_of(kref, struct kdbus_meta_conn, kref);
-+
-+ kfree(mc->conn_description);
-+ kfree(mc->owned_names_items);
-+ kfree(mc);
-+}
-+
-+/**
-+ * kdbus_meta_conn_ref() - Gain reference
-+ * @mc: Connection metadata object
-+ */
-+struct kdbus_meta_conn *kdbus_meta_conn_ref(struct kdbus_meta_conn *mc)
-+{
-+ if (mc)
-+ kref_get(&mc->kref);
-+ return mc;
-+}
-+
-+/**
-+ * kdbus_meta_conn_unref() - Drop reference
-+ * @mc: Connection metadata object
-+ */
-+struct kdbus_meta_conn *kdbus_meta_conn_unref(struct kdbus_meta_conn *mc)
-+{
-+ if (mc)
-+ kref_put(&mc->kref, kdbus_meta_conn_free);
-+ return NULL;
-+}
-+
-+static void kdbus_meta_conn_collect_timestamp(struct kdbus_meta_conn *mc,
-+ u64 msg_seqnum)
-+{
-+ mc->ts.monotonic_ns = ktime_get_ns();
-+ mc->ts.realtime_ns = ktime_get_real_ns();
-+
-+ if (msg_seqnum)
-+ mc->ts.seqnum = msg_seqnum;
-+
-+ mc->valid |= KDBUS_ATTACH_TIMESTAMP;
-+}
-+
-+static int kdbus_meta_conn_collect_names(struct kdbus_meta_conn *mc,
-+ struct kdbus_conn *conn)
-+{
-+ const struct kdbus_name_owner *owner;
-+ struct kdbus_item *item;
-+ size_t slen, size;
-+
-+ lockdep_assert_held(&conn->ep->bus->name_registry->rwlock);
-+
-+ size = 0;
-+ /* open-code length calculation to avoid final padding */
-+ list_for_each_entry(owner, &conn->names_list, conn_entry)
-+ if (!(owner->flags & KDBUS_NAME_IN_QUEUE))
-+ size = KDBUS_ALIGN8(size) + KDBUS_ITEM_HEADER_SIZE +
-+ sizeof(struct kdbus_name) +
-+ strlen(owner->name->name) + 1;
-+
-+ if (!size)
-+ return 0;
-+
-+ /* make sure we include zeroed padding for convenience helpers */
-+ item = kmalloc(KDBUS_ALIGN8(size), GFP_KERNEL);
-+ if (!item)
-+ return -ENOMEM;
-+
-+ mc->owned_names_items = item;
-+ mc->owned_names_size = size;
-+
-+ list_for_each_entry(owner, &conn->names_list, conn_entry) {
-+ if (owner->flags & KDBUS_NAME_IN_QUEUE)
-+ continue;
-+
-+ slen = strlen(owner->name->name) + 1;
-+ kdbus_item_set(item, KDBUS_ITEM_OWNED_NAME, NULL,
-+ sizeof(struct kdbus_name) + slen);
-+ item->name.flags = owner->flags;
-+ memcpy(item->name.name, owner->name->name, slen);
-+ item = KDBUS_ITEM_NEXT(item);
-+ }
-+
-+ /* sanity check: the buffer should be completely written now */
-+ WARN_ON((u8 *)item !=
-+ (u8 *)mc->owned_names_items + KDBUS_ALIGN8(size));
-+
-+ mc->valid |= KDBUS_ATTACH_NAMES;
-+ return 0;
-+}
-+
-+static int kdbus_meta_conn_collect_description(struct kdbus_meta_conn *mc,
-+ struct kdbus_conn *conn)
-+{
-+ if (!conn->description)
-+ return 0;
-+
-+ mc->conn_description = kstrdup(conn->description, GFP_KERNEL);
-+ if (!mc->conn_description)
-+ return -ENOMEM;
-+
-+ mc->valid |= KDBUS_ATTACH_CONN_DESCRIPTION;
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_meta_conn_collect() - Collect connection metadata
-+ * @mc: Message metadata object
-+ * @conn: Connection to collect data from
-+ * @msg_seqnum: Sequence number of the message to send
-+ * @what: Attach flags to collect
-+ *
-+ * This collects connection metadata from @msg_seqnum and @conn and saves it
-+ * in @mc.
-+ *
-+ * If KDBUS_ATTACH_NAMES is set in @what and @conn is non-NULL, the caller must
-+ * hold the name-registry read-lock of conn->ep->bus->registry.
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_meta_conn_collect(struct kdbus_meta_conn *mc,
-+ struct kdbus_conn *conn,
-+ u64 msg_seqnum, u64 what)
-+{
-+ int ret;
-+
-+ if (!mc || !(what & (KDBUS_ATTACH_TIMESTAMP |
-+ KDBUS_ATTACH_NAMES |
-+ KDBUS_ATTACH_CONN_DESCRIPTION)))
-+ return 0;
-+
-+ mutex_lock(&mc->lock);
-+
-+ if (msg_seqnum && (what & KDBUS_ATTACH_TIMESTAMP) &&
-+ !(mc->collected & KDBUS_ATTACH_TIMESTAMP)) {
-+ kdbus_meta_conn_collect_timestamp(mc, msg_seqnum);
-+ mc->collected |= KDBUS_ATTACH_TIMESTAMP;
-+ }
-+
-+ if (conn && (what & KDBUS_ATTACH_NAMES) &&
-+ !(mc->collected & KDBUS_ATTACH_NAMES)) {
-+ ret = kdbus_meta_conn_collect_names(mc, conn);
-+ if (ret < 0)
-+ goto exit_unlock;
-+ mc->collected |= KDBUS_ATTACH_NAMES;
-+ }
-+
-+ if (conn && (what & KDBUS_ATTACH_CONN_DESCRIPTION) &&
-+ !(mc->collected & KDBUS_ATTACH_CONN_DESCRIPTION)) {
-+ ret = kdbus_meta_conn_collect_description(mc, conn);
-+ if (ret < 0)
-+ goto exit_unlock;
-+ mc->collected |= KDBUS_ATTACH_CONN_DESCRIPTION;
-+ }
-+
-+ ret = 0;
-+
-+exit_unlock:
-+ mutex_unlock(&mc->lock);
-+ return ret;
-+}
-+
-+static void kdbus_meta_export_caps(struct kdbus_meta_caps *out,
-+ const struct kdbus_meta_proc *mp,
-+ struct user_namespace *user_ns)
-+{
-+ struct user_namespace *iter;
-+ const struct cred *cred = mp->cred;
-+ bool parent = false, owner = false;
-+ int i;
-+
-+ /*
-+ * This translates the effective capabilities of 'cred' into the given
-+ * user-namespace. If the given user-namespace is a child-namespace of
-+ * the user-namespace of 'cred', the mask can be copied verbatim. If
-+ * not, the mask is cleared.
-+ * There's one exception: If 'cred' is the owner of any user-namespace
-+ * in the path between the given user-namespace and the user-namespace
-+ * of 'cred', then it has all effective capabilities set. This means,
-+ * the user who created a user-namespace always has all effective
-+ * capabilities in any child namespaces. Note that this is based on the
-+ * uid of the namespace creator, not the task hierarchy.
-+ */
-+ for (iter = user_ns; iter; iter = iter->parent) {
-+ if (iter == cred->user_ns) {
-+ parent = true;
-+ break;
-+ }
-+
-+ if (iter == &init_user_ns)
-+ break;
-+
-+ if ((iter->parent == cred->user_ns) &&
-+ uid_eq(iter->owner, cred->euid)) {
-+ owner = true;
-+ break;
-+ }
-+ }
-+
-+ out->last_cap = CAP_LAST_CAP;
-+
-+ CAP_FOR_EACH_U32(i) {
-+ if (parent) {
-+ out->set[0].caps[i] = cred->cap_inheritable.cap[i];
-+ out->set[1].caps[i] = cred->cap_permitted.cap[i];
-+ out->set[2].caps[i] = cred->cap_effective.cap[i];
-+ out->set[3].caps[i] = cred->cap_bset.cap[i];
-+ } else if (owner) {
-+ out->set[0].caps[i] = 0U;
-+ out->set[1].caps[i] = ~0U;
-+ out->set[2].caps[i] = ~0U;
-+ out->set[3].caps[i] = ~0U;
-+ } else {
-+ out->set[0].caps[i] = 0U;
-+ out->set[1].caps[i] = 0U;
-+ out->set[2].caps[i] = 0U;
-+ out->set[3].caps[i] = 0U;
-+ }
-+ }
-+
-+ /* clear unused bits */
-+ for (i = 0; i < 4; i++)
-+ out->set[i].caps[CAP_TO_INDEX(CAP_LAST_CAP)] &=
-+ CAP_LAST_U32_VALID_MASK;
-+}
-+
-+/* This is equivalent to from_kuid_munged(), but maps INVALID_UID to itself */
-+static uid_t kdbus_from_kuid_keep(struct user_namespace *ns, kuid_t uid)
-+{
-+ return uid_valid(uid) ? from_kuid_munged(ns, uid) : ((uid_t)-1);
-+}
-+
-+/* This is equivalent to from_kgid_munged(), but maps INVALID_GID to itself */
-+static gid_t kdbus_from_kgid_keep(struct user_namespace *ns, kgid_t gid)
-+{
-+ return gid_valid(gid) ? from_kgid_munged(ns, gid) : ((gid_t)-1);
-+}
-+
-+struct kdbus_meta_staging {
-+ const struct kdbus_meta_proc *mp;
-+ const struct kdbus_meta_fake *mf;
-+ const struct kdbus_meta_conn *mc;
-+ const struct kdbus_conn *conn;
-+ u64 mask;
-+
-+ void *exe;
-+ const char *exe_path;
-+};
-+
-+static size_t kdbus_meta_measure(struct kdbus_meta_staging *staging)
-+{
-+ const struct kdbus_meta_proc *mp = staging->mp;
-+ const struct kdbus_meta_fake *mf = staging->mf;
-+ const struct kdbus_meta_conn *mc = staging->mc;
-+ const u64 mask = staging->mask;
-+ size_t size = 0;
-+
-+ /* process metadata */
-+
-+ if (mf && (mask & KDBUS_ATTACH_CREDS))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_creds));
-+ else if (mp && (mask & KDBUS_ATTACH_CREDS))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_creds));
-+
-+ if (mf && (mask & KDBUS_ATTACH_PIDS))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_pids));
-+ else if (mp && (mask & KDBUS_ATTACH_PIDS))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_pids));
-+
-+ if (mp && (mask & KDBUS_ATTACH_AUXGROUPS))
-+ size += KDBUS_ITEM_SIZE(mp->cred->group_info->ngroups *
-+ sizeof(u64));
-+
-+ if (mp && (mask & KDBUS_ATTACH_TID_COMM))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->tid_comm) + 1);
-+
-+ if (mp && (mask & KDBUS_ATTACH_PID_COMM))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->pid_comm) + 1);
-+
-+ if (staging->exe_path && (mask & KDBUS_ATTACH_EXE))
-+ size += KDBUS_ITEM_SIZE(strlen(staging->exe_path) + 1);
-+
-+ if (mp && (mask & KDBUS_ATTACH_CMDLINE))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->cmdline) + 1);
-+
-+ if (mp && (mask & KDBUS_ATTACH_CGROUP))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->cgroup) + 1);
-+
-+ if (mp && (mask & KDBUS_ATTACH_CAPS))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_meta_caps));
-+
-+ if (mf && (mask & KDBUS_ATTACH_SECLABEL))
-+ size += KDBUS_ITEM_SIZE(strlen(mf->seclabel) + 1);
-+ else if (mp && (mask & KDBUS_ATTACH_SECLABEL))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->seclabel) + 1);
-+
-+ if (mp && (mask & KDBUS_ATTACH_AUDIT))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_audit));
-+
-+ /* connection metadata */
-+
-+ if (mc && (mask & KDBUS_ATTACH_NAMES))
-+ size += KDBUS_ALIGN8(mc->owned_names_size);
-+
-+ if (mc && (mask & KDBUS_ATTACH_CONN_DESCRIPTION))
-+ size += KDBUS_ITEM_SIZE(strlen(mc->conn_description) + 1);
-+
-+ if (mc && (mask & KDBUS_ATTACH_TIMESTAMP))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_timestamp));
-+
-+ return size;
-+}
-+
-+static struct kdbus_item *kdbus_write_head(struct kdbus_item **iter,
-+ u64 type, u64 size)
-+{
-+ struct kdbus_item *item = *iter;
-+ size_t padding;
-+
-+ item->type = type;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + size;
-+
-+ /* clear padding */
-+ padding = KDBUS_ALIGN8(item->size) - item->size;
-+ if (padding)
-+ memset(item->data + size, 0, padding);
-+
-+ *iter = KDBUS_ITEM_NEXT(item);
-+ return item;
-+}
-+
-+static struct kdbus_item *kdbus_write_full(struct kdbus_item **iter,
-+ u64 type, u64 size, const void *data)
-+{
-+ struct kdbus_item *item;
-+
-+ item = kdbus_write_head(iter, type, size);
-+ memcpy(item->data, data, size);
-+ return item;
-+}
-+
-+static size_t kdbus_meta_write(struct kdbus_meta_staging *staging, void *mem,
-+ size_t size)
-+{
-+ struct user_namespace *user_ns = staging->conn->cred->user_ns;
-+ struct pid_namespace *pid_ns = ns_of_pid(staging->conn->pid);
-+ struct kdbus_item *item = NULL, *items = mem;
-+ u8 *end, *owned_names_end = NULL;
-+
-+ /* process metadata */
-+
-+ if (staging->mf && (staging->mask & KDBUS_ATTACH_CREDS)) {
-+ const struct kdbus_meta_fake *mf = staging->mf;
-+
-+ item = kdbus_write_head(&items, KDBUS_ITEM_CREDS,
-+ sizeof(struct kdbus_creds));
-+ item->creds = (struct kdbus_creds){
-+ .uid = kdbus_from_kuid_keep(user_ns, mf->uid),
-+ .euid = kdbus_from_kuid_keep(user_ns, mf->euid),
-+ .suid = kdbus_from_kuid_keep(user_ns, mf->suid),
-+ .fsuid = kdbus_from_kuid_keep(user_ns, mf->fsuid),
-+ .gid = kdbus_from_kgid_keep(user_ns, mf->gid),
-+ .egid = kdbus_from_kgid_keep(user_ns, mf->egid),
-+ .sgid = kdbus_from_kgid_keep(user_ns, mf->sgid),
-+ .fsgid = kdbus_from_kgid_keep(user_ns, mf->fsgid),
-+ };
-+ } else if (staging->mp && (staging->mask & KDBUS_ATTACH_CREDS)) {
-+ const struct cred *c = staging->mp->cred;
-+
-+ item = kdbus_write_head(&items, KDBUS_ITEM_CREDS,
-+ sizeof(struct kdbus_creds));
-+ item->creds = (struct kdbus_creds){
-+ .uid = kdbus_from_kuid_keep(user_ns, c->uid),
-+ .euid = kdbus_from_kuid_keep(user_ns, c->euid),
-+ .suid = kdbus_from_kuid_keep(user_ns, c->suid),
-+ .fsuid = kdbus_from_kuid_keep(user_ns, c->fsuid),
-+ .gid = kdbus_from_kgid_keep(user_ns, c->gid),
-+ .egid = kdbus_from_kgid_keep(user_ns, c->egid),
-+ .sgid = kdbus_from_kgid_keep(user_ns, c->sgid),
-+ .fsgid = kdbus_from_kgid_keep(user_ns, c->fsgid),
-+ };
-+ }
-+
-+ if (staging->mf && (staging->mask & KDBUS_ATTACH_PIDS)) {
-+ item = kdbus_write_head(&items, KDBUS_ITEM_PIDS,
-+ sizeof(struct kdbus_pids));
-+ item->pids = (struct kdbus_pids){
-+ .pid = pid_nr_ns(staging->mf->tgid, pid_ns),
-+ .tid = pid_nr_ns(staging->mf->pid, pid_ns),
-+ .ppid = pid_nr_ns(staging->mf->ppid, pid_ns),
-+ };
-+ } else if (staging->mp && (staging->mask & KDBUS_ATTACH_PIDS)) {
-+ item = kdbus_write_head(&items, KDBUS_ITEM_PIDS,
-+ sizeof(struct kdbus_pids));
-+ item->pids = (struct kdbus_pids){
-+ .pid = pid_nr_ns(staging->mp->tgid, pid_ns),
-+ .tid = pid_nr_ns(staging->mp->pid, pid_ns),
-+ .ppid = pid_nr_ns(staging->mp->ppid, pid_ns),
-+ };
-+ }
-+
-+ if (staging->mp && (staging->mask & KDBUS_ATTACH_AUXGROUPS)) {
-+ const struct group_info *info = staging->mp->cred->group_info;
-+ size_t i;
-+
-+ item = kdbus_write_head(&items, KDBUS_ITEM_AUXGROUPS,
-+ info->ngroups * sizeof(u64));
-+ for (i = 0; i < info->ngroups; ++i)
-+ item->data64[i] = from_kgid_munged(user_ns,
-+ GROUP_AT(info, i));
-+ }
-+
-+ if (staging->mp && (staging->mask & KDBUS_ATTACH_TID_COMM))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_TID_COMM,
-+ strlen(staging->mp->tid_comm) + 1,
-+ staging->mp->tid_comm);
-+
-+ if (staging->mp && (staging->mask & KDBUS_ATTACH_PID_COMM))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_PID_COMM,
-+ strlen(staging->mp->pid_comm) + 1,
-+ staging->mp->pid_comm);
-+
-+ if (staging->exe_path && (staging->mask & KDBUS_ATTACH_EXE))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_EXE,
-+ strlen(staging->exe_path) + 1,
-+ staging->exe_path);
-+
-+ if (staging->mp && (staging->mask & KDBUS_ATTACH_CMDLINE))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_CMDLINE,
-+ strlen(staging->mp->cmdline) + 1,
-+ staging->mp->cmdline);
-+
-+ if (staging->mp && (staging->mask & KDBUS_ATTACH_CGROUP))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_CGROUP,
-+ strlen(staging->mp->cgroup) + 1,
-+ staging->mp->cgroup);
-+
-+ if (staging->mp && (staging->mask & KDBUS_ATTACH_CAPS)) {
-+ item = kdbus_write_head(&items, KDBUS_ITEM_CAPS,
-+ sizeof(struct kdbus_meta_caps));
-+ kdbus_meta_export_caps((void*)&item->caps, staging->mp,
-+ user_ns);
-+ }
-+
-+ if (staging->mf && (staging->mask & KDBUS_ATTACH_SECLABEL))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_SECLABEL,
-+ strlen(staging->mf->seclabel) + 1,
-+ staging->mf->seclabel);
-+ else if (staging->mp && (staging->mask & KDBUS_ATTACH_SECLABEL))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_SECLABEL,
-+ strlen(staging->mp->seclabel) + 1,
-+ staging->mp->seclabel);
-+
-+ if (staging->mp && (staging->mask & KDBUS_ATTACH_AUDIT)) {
-+ item = kdbus_write_head(&items, KDBUS_ITEM_AUDIT,
-+ sizeof(struct kdbus_audit));
-+ item->audit = (struct kdbus_audit){
-+ .loginuid = from_kuid(user_ns,
-+ staging->mp->audit_loginuid),
-+ .sessionid = staging->mp->audit_sessionid,
-+ };
-+ }
-+
-+ /* connection metadata */
-+
-+ if (staging->mc && (staging->mask & KDBUS_ATTACH_NAMES)) {
-+ memcpy(items, staging->mc->owned_names_items,
-+ KDBUS_ALIGN8(staging->mc->owned_names_size));
-+ owned_names_end = (u8 *)items + staging->mc->owned_names_size;
-+ items = (void *)KDBUS_ALIGN8((unsigned long)owned_names_end);
-+ }
-+
-+ if (staging->mc && (staging->mask & KDBUS_ATTACH_CONN_DESCRIPTION))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_CONN_DESCRIPTION,
-+ strlen(staging->mc->conn_description) + 1,
-+ staging->mc->conn_description);
-+
-+ if (staging->mc && (staging->mask & KDBUS_ATTACH_TIMESTAMP))
-+ item = kdbus_write_full(&items, KDBUS_ITEM_TIMESTAMP,
-+ sizeof(staging->mc->ts),
-+ &staging->mc->ts);
-+
-+ /*
-+ * Return real size (minus trailing padding). In case of 'owned_names'
-+ * we cannot deduce it from item->size, so treat it special.
-+ */
-+
-+ if (items == (void *)KDBUS_ALIGN8((unsigned long)owned_names_end))
-+ end = owned_names_end;
-+ else if (item)
-+ end = (u8 *)item + item->size;
-+ else
-+ end = mem;
-+
-+ WARN_ON((u8 *)items - (u8 *)mem != size);
-+ WARN_ON((void *)KDBUS_ALIGN8((unsigned long)end) != (void *)items);
-+
-+ return end - (u8 *)mem;
-+}
-+
-+int kdbus_meta_emit(struct kdbus_meta_proc *mp,
-+ struct kdbus_meta_fake *mf,
-+ struct kdbus_meta_conn *mc,
-+ struct kdbus_conn *conn,
-+ u64 mask,
-+ struct kdbus_item **out_items,
-+ size_t *out_size)
-+{
-+ struct kdbus_meta_staging staging = {};
-+ struct kdbus_item *items = NULL;
-+ size_t size = 0;
-+ int ret;
-+
-+ if (WARN_ON(mf && mp))
-+ mp = NULL;
-+
-+ staging.mp = mp;
-+ staging.mf = mf;
-+ staging.mc = mc;
-+ staging.conn = conn;
-+
-+ /* get mask of valid items */
-+ if (mf)
-+ staging.mask |= mf->valid;
-+ if (mp) {
-+ mutex_lock(&mp->lock);
-+ staging.mask |= mp->valid;
-+ mutex_unlock(&mp->lock);
-+ }
-+ if (mc) {
-+ mutex_lock(&mc->lock);
-+ staging.mask |= mc->valid;
-+ mutex_unlock(&mc->lock);
-+ }
-+
-+ staging.mask &= mask;
-+
-+ if (!staging.mask) { /* bail out if nothing to do */
-+ ret = 0;
-+ goto exit;
-+ }
-+
-+ /* EXE is special as it needs a temporary page to assemble */
-+ if (mp && (staging.mask & KDBUS_ATTACH_EXE)) {
-+ struct path p;
-+
-+ /*
-+ * XXX: We need access to __d_path() so we can write the path
-+ * relative to conn->root_path. Once upstream, we need
-+ * EXPORT_SYMBOL(__d_path) or an equivalent of d_path() that
-+ * takes the root path directly. Until then, we drop this item
-+ * if the root-paths differ.
-+ */
-+
-+ get_fs_root(current->fs, &p);
-+ if (path_equal(&p, &conn->root_path)) {
-+ staging.exe = (void *)__get_free_page(GFP_TEMPORARY);
-+ if (!staging.exe) {
-+ path_put(&p);
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ staging.exe_path = d_path(&mp->exe_path, staging.exe,
-+ PAGE_SIZE);
-+ if (IS_ERR(staging.exe_path)) {
-+ path_put(&p);
-+ ret = PTR_ERR(staging.exe_path);
-+ goto exit;
-+ }
-+ }
-+ path_put(&p);
-+ }
-+
-+ size = kdbus_meta_measure(&staging);
-+ if (!size) { /* bail out if nothing to do */
-+ ret = 0;
-+ goto exit;
-+ }
-+
-+ items = kmalloc(size, GFP_KERNEL);
-+ if (!items) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ size = kdbus_meta_write(&staging, items, size);
-+ if (!size) {
-+ kfree(items);
-+ items = NULL;
-+ }
-+
-+ ret = 0;
-+
-+exit:
-+ if (staging.exe)
-+ free_page((unsigned long)staging.exe);
-+ if (ret >= 0) {
-+ *out_items = items;
-+ *out_size = size;
-+ }
-+ return ret;
-+}
-+
-+enum {
-+ KDBUS_META_PROC_NONE,
-+ KDBUS_META_PROC_NORMAL,
-+};
-+
-+/**
-+ * kdbus_proc_permission() - check /proc permissions on target pid
-+ * @pid_ns: namespace we operate in
-+ * @cred: credentials of requestor
-+ * @target: target process
-+ *
-+ * This checks whether a process with credentials @cred can access information
-+ * of @target in the namespace @pid_ns. This tries to follow /proc permissions,
-+ * but is slightly more restrictive.
-+ *
-+ * Return: The /proc access level (KDBUS_META_PROC_*) is returned.
-+ */
-+static unsigned int kdbus_proc_permission(const struct pid_namespace *pid_ns,
-+ const struct cred *cred,
-+ struct pid *target)
-+{
-+ if (pid_ns->hide_pid < 1)
-+ return KDBUS_META_PROC_NORMAL;
-+
-+ /* XXX: we need groups_search() exported for aux-groups */
-+ if (gid_eq(cred->egid, pid_ns->pid_gid))
-+ return KDBUS_META_PROC_NORMAL;
-+
-+ /*
-+ * XXX: If ptrace_may_access(PTRACE_MODE_READ) is granted, you can
-+ * overwrite hide_pid. However, ptrace_may_access() only supports
-+ * checking 'current', hence, we cannot use this here. But we
-+ * simply decide to not support this override, so no need to worry.
-+ */
-+
-+ return KDBUS_META_PROC_NONE;
-+}
-+
-+/**
-+ * kdbus_meta_proc_mask() - calculate which metadata would be visible to
-+ * a connection via /proc
-+ * @prv_pid: pid of metadata provider
-+ * @req_pid: pid of metadata requestor
-+ * @req_cred: credentials of metadata reqeuestor
-+ * @wanted: metadata that is requested
-+ *
-+ * This checks which metadata items of @prv_pid can be read via /proc by the
-+ * requestor @req_pid.
-+ *
-+ * Return: Set of metadata flags the requestor can see (limited by @wanted).
-+ */
-+static u64 kdbus_meta_proc_mask(struct pid *prv_pid,
-+ struct pid *req_pid,
-+ const struct cred *req_cred,
-+ u64 wanted)
-+{
-+ struct pid_namespace *prv_ns, *req_ns;
-+ unsigned int proc;
-+
-+ prv_ns = ns_of_pid(prv_pid);
-+ req_ns = ns_of_pid(req_pid);
-+
-+ /*
-+ * If the sender is not visible in the receiver namespace, then the
-+ * receiver cannot access the sender via its own procfs. Hence, we do
-+ * not attach any additional metadata.
-+ */
-+ if (!pid_nr_ns(prv_pid, req_ns))
-+ return 0;
-+
-+ /*
-+ * If the pid-namespace of the receiver has hide_pid set, it cannot see
-+ * any process but its own. We shortcut this /proc permission check if
-+ * provider and requestor are the same. If not, we perform rather
-+ * expensive /proc permission checks.
-+ */
-+ if (prv_pid == req_pid)
-+ proc = KDBUS_META_PROC_NORMAL;
-+ else
-+ proc = kdbus_proc_permission(req_ns, req_cred, prv_pid);
-+
-+ /* you need /proc access to read standard process attributes */
-+ if (proc < KDBUS_META_PROC_NORMAL)
-+ wanted &= ~(KDBUS_ATTACH_TID_COMM |
-+ KDBUS_ATTACH_PID_COMM |
-+ KDBUS_ATTACH_SECLABEL |
-+ KDBUS_ATTACH_CMDLINE |
-+ KDBUS_ATTACH_CGROUP |
-+ KDBUS_ATTACH_AUDIT |
-+ KDBUS_ATTACH_CAPS |
-+ KDBUS_ATTACH_EXE);
-+
-+ /* clear all non-/proc flags */
-+ return wanted & (KDBUS_ATTACH_TID_COMM |
-+ KDBUS_ATTACH_PID_COMM |
-+ KDBUS_ATTACH_SECLABEL |
-+ KDBUS_ATTACH_CMDLINE |
-+ KDBUS_ATTACH_CGROUP |
-+ KDBUS_ATTACH_AUDIT |
-+ KDBUS_ATTACH_CAPS |
-+ KDBUS_ATTACH_EXE);
-+}
-+
-+/**
-+ * kdbus_meta_get_mask() - calculate attach flags mask for metadata request
-+ * @prv_pid: pid of metadata provider
-+ * @prv_mask: mask of metadata the provide grants unchecked
-+ * @req_pid: pid of metadata requestor
-+ * @req_cred: credentials of metadata requestor
-+ * @req_mask: mask of metadata that is requested
-+ *
-+ * This calculates the metadata items that the requestor @req_pid can access
-+ * from the metadata provider @prv_pid. This permission check consists of
-+ * several different parts:
-+ * - Providers can grant metadata items unchecked. Regardless of their type,
-+ * they're always granted to the requestor. This mask is passed as @prv_mask.
-+ * - Basic items (credentials and connection metadata) are granted implicitly
-+ * to everyone. They're publicly available to any bus-user that can see the
-+ * provider.
-+ * - Process credentials that are not granted implicitly follow the same
-+ * permission checks as /proc. This means, we always assume a requestor
-+ * process has access to their *own* /proc mount, if they have access to
-+ * kdbusfs.
-+ *
-+ * Return: Mask of metadata that is granted.
-+ */
-+static u64 kdbus_meta_get_mask(struct pid *prv_pid, u64 prv_mask,
-+ struct pid *req_pid,
-+ const struct cred *req_cred, u64 req_mask)
-+{
-+ u64 missing, impl_mask, proc_mask = 0;
-+
-+ /*
-+ * Connection metadata and basic unix process credentials are
-+ * transmitted implicitly, and cannot be suppressed. Both are required
-+ * to perform user-space policies on the receiver-side. Furthermore,
-+ * connection metadata is public state, anyway, and unix credentials
-+ * are needed for UDS-compatibility. We extend them slightly by
-+ * auxiliary groups and additional uids/gids/pids.
-+ */
-+ impl_mask = /* connection metadata */
-+ KDBUS_ATTACH_CONN_DESCRIPTION |
-+ KDBUS_ATTACH_TIMESTAMP |
-+ KDBUS_ATTACH_NAMES |
-+ /* credentials and pids */
-+ KDBUS_ATTACH_AUXGROUPS |
-+ KDBUS_ATTACH_CREDS |
-+ KDBUS_ATTACH_PIDS;
-+
-+ /*
-+ * Calculate the set of metadata that is not granted implicitly nor by
-+ * the sender, but still requested by the receiver. If any are left,
-+ * perform rather expensive /proc access checks for them.
-+ */
-+ missing = req_mask & ~((prv_mask | impl_mask) & req_mask);
-+ if (missing)
-+ proc_mask = kdbus_meta_proc_mask(prv_pid, req_pid, req_cred,
-+ missing);
-+
-+ return (prv_mask | impl_mask | proc_mask) & req_mask;
-+}
-+
-+/**
-+ */
-+u64 kdbus_meta_info_mask(const struct kdbus_conn *conn, u64 mask)
-+{
-+ return kdbus_meta_get_mask(conn->pid,
-+ atomic64_read(&conn->attach_flags_send),
-+ task_pid(current),
-+ current_cred(),
-+ mask);
-+}
-+
-+/**
-+ */
-+u64 kdbus_meta_msg_mask(const struct kdbus_conn *snd,
-+ const struct kdbus_conn *rcv)
-+{
-+ return kdbus_meta_get_mask(task_pid(current),
-+ atomic64_read(&snd->attach_flags_send),
-+ rcv->pid,
-+ rcv->cred,
-+ atomic64_read(&rcv->attach_flags_recv));
-+}
-diff --git a/ipc/kdbus/metadata.h b/ipc/kdbus/metadata.h
-new file mode 100644
-index 0000000..dba7cc7
---- /dev/null
-+++ b/ipc/kdbus/metadata.h
-@@ -0,0 +1,86 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_METADATA_H
-+#define __KDBUS_METADATA_H
-+
-+#include <linux/kernel.h>
-+
-+struct kdbus_conn;
-+struct kdbus_pool_slice;
-+
-+struct kdbus_meta_proc;
-+struct kdbus_meta_conn;
-+
-+/**
-+ * struct kdbus_meta_fake - Fake metadata
-+ * @valid: Bitmask of collected and valid items
-+ * @uid: UID of process
-+ * @euid: EUID of process
-+ * @suid: SUID of process
-+ * @fsuid: FSUID of process
-+ * @gid: GID of process
-+ * @egid: EGID of process
-+ * @sgid: SGID of process
-+ * @fsgid: FSGID of process
-+ * @pid: PID of process
-+ * @tgid: TGID of process
-+ * @ppid: PPID of process
-+ * @seclabel: Seclabel
-+ */
-+struct kdbus_meta_fake {
-+ u64 valid;
-+
-+ /* KDBUS_ITEM_CREDS */
-+ kuid_t uid, euid, suid, fsuid;
-+ kgid_t gid, egid, sgid, fsgid;
-+
-+ /* KDBUS_ITEM_PIDS */
-+ struct pid *pid, *tgid, *ppid;
-+
-+ /* KDBUS_ITEM_SECLABEL */
-+ char *seclabel;
-+};
-+
-+struct kdbus_meta_proc *kdbus_meta_proc_new(void);
-+struct kdbus_meta_proc *kdbus_meta_proc_ref(struct kdbus_meta_proc *mp);
-+struct kdbus_meta_proc *kdbus_meta_proc_unref(struct kdbus_meta_proc *mp);
-+int kdbus_meta_proc_collect(struct kdbus_meta_proc *mp, u64 what);
-+
-+struct kdbus_meta_fake *kdbus_meta_fake_new(void);
-+struct kdbus_meta_fake *kdbus_meta_fake_free(struct kdbus_meta_fake *mf);
-+int kdbus_meta_fake_collect(struct kdbus_meta_fake *mf,
-+ const struct kdbus_creds *creds,
-+ const struct kdbus_pids *pids,
-+ const char *seclabel);
-+
-+struct kdbus_meta_conn *kdbus_meta_conn_new(void);
-+struct kdbus_meta_conn *kdbus_meta_conn_ref(struct kdbus_meta_conn *mc);
-+struct kdbus_meta_conn *kdbus_meta_conn_unref(struct kdbus_meta_conn *mc);
-+int kdbus_meta_conn_collect(struct kdbus_meta_conn *mc,
-+ struct kdbus_conn *conn,
-+ u64 msg_seqnum, u64 what);
-+
-+int kdbus_meta_emit(struct kdbus_meta_proc *mp,
-+ struct kdbus_meta_fake *mf,
-+ struct kdbus_meta_conn *mc,
-+ struct kdbus_conn *conn,
-+ u64 mask,
-+ struct kdbus_item **out_items,
-+ size_t *out_size);
-+u64 kdbus_meta_info_mask(const struct kdbus_conn *conn, u64 mask);
-+u64 kdbus_meta_msg_mask(const struct kdbus_conn *snd,
-+ const struct kdbus_conn *rcv);
-+
-+#endif
-diff --git a/ipc/kdbus/names.c b/ipc/kdbus/names.c
-new file mode 100644
-index 0000000..bf44ca3
---- /dev/null
-+++ b/ipc/kdbus/names.c
-@@ -0,0 +1,854 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/ctype.h>
-+#include <linux/fs.h>
-+#include <linux/hash.h>
-+#include <linux/idr.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/rwsem.h>
-+#include <linux/sched.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+#include <linux/uio.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "endpoint.h"
-+#include "handle.h"
-+#include "item.h"
-+#include "names.h"
-+#include "notify.h"
-+#include "policy.h"
-+
-+#define KDBUS_NAME_SAVED_MASK (KDBUS_NAME_ALLOW_REPLACEMENT | \
-+ KDBUS_NAME_QUEUE)
-+
-+static bool kdbus_name_owner_is_used(struct kdbus_name_owner *owner)
-+{
-+ return !list_empty(&owner->name_entry) ||
-+ owner == owner->name->activator;
-+}
-+
-+static struct kdbus_name_owner *
-+kdbus_name_owner_new(struct kdbus_conn *conn, struct kdbus_name_entry *name,
-+ u64 flags)
-+{
-+ struct kdbus_name_owner *owner;
-+
-+ kdbus_conn_assert_active(conn);
-+
-+ if (conn->name_count >= KDBUS_CONN_MAX_NAMES)
-+ return ERR_PTR(-E2BIG);
-+
-+ owner = kmalloc(sizeof(*owner), GFP_KERNEL);
-+ if (!owner)
-+ return ERR_PTR(-ENOMEM);
-+
-+ owner->flags = flags & KDBUS_NAME_SAVED_MASK;
-+ owner->conn = conn;
-+ owner->name = name;
-+ list_add_tail(&owner->conn_entry, &conn->names_list);
-+ INIT_LIST_HEAD(&owner->name_entry);
-+
-+ ++conn->name_count;
-+ return owner;
-+}
-+
-+static void kdbus_name_owner_free(struct kdbus_name_owner *owner)
-+{
-+ if (!owner)
-+ return;
-+
-+ WARN_ON(kdbus_name_owner_is_used(owner));
-+ --owner->conn->name_count;
-+ list_del(&owner->conn_entry);
-+ kfree(owner);
-+}
-+
-+static struct kdbus_name_owner *
-+kdbus_name_owner_find(struct kdbus_name_entry *name, struct kdbus_conn *conn)
-+{
-+ struct kdbus_name_owner *owner;
-+
-+ /*
-+ * Use conn->names_list over name->queue to make sure boundaries of
-+ * this linear search are controlled by the connection itself.
-+ * Furthermore, this will find normal owners as well as activators
-+ * without any additional code.
-+ */
-+ list_for_each_entry(owner, &conn->names_list, conn_entry)
-+ if (owner->name == name)
-+ return owner;
-+
-+ return NULL;
-+}
-+
-+static bool kdbus_name_entry_is_used(struct kdbus_name_entry *name)
-+{
-+ return !list_empty(&name->queue) || name->activator;
-+}
-+
-+static struct kdbus_name_owner *
-+kdbus_name_entry_first(struct kdbus_name_entry *name)
-+{
-+ return list_first_entry_or_null(&name->queue, struct kdbus_name_owner,
-+ name_entry);
-+}
-+
-+static struct kdbus_name_entry *
-+kdbus_name_entry_new(struct kdbus_name_registry *r, u32 hash,
-+ const char *name_str)
-+{
-+ struct kdbus_name_entry *name;
-+ size_t namelen;
-+
-+ lockdep_assert_held(&r->rwlock);
-+
-+ namelen = strlen(name_str);
-+
-+ name = kmalloc(sizeof(*name) + namelen + 1, GFP_KERNEL);
-+ if (!name)
-+ return ERR_PTR(-ENOMEM);
-+
-+ name->name_id = ++r->name_seq_last;
-+ name->activator = NULL;
-+ INIT_LIST_HEAD(&name->queue);
-+ hash_add(r->entries_hash, &name->hentry, hash);
-+ memcpy(name->name, name_str, namelen + 1);
-+
-+ return name;
-+}
-+
-+static void kdbus_name_entry_free(struct kdbus_name_entry *name)
-+{
-+ if (!name)
-+ return;
-+
-+ WARN_ON(kdbus_name_entry_is_used(name));
-+ hash_del(&name->hentry);
-+ kfree(name);
-+}
-+
-+static struct kdbus_name_entry *
-+kdbus_name_entry_find(struct kdbus_name_registry *r, u32 hash,
-+ const char *name_str)
-+{
-+ struct kdbus_name_entry *name;
-+
-+ lockdep_assert_held(&r->rwlock);
-+
-+ hash_for_each_possible(r->entries_hash, name, hentry, hash)
-+ if (!strcmp(name->name, name_str))
-+ return name;
-+
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_name_registry_new() - create a new name registry
-+ *
-+ * Return: a new kdbus_name_registry on success, ERR_PTR on failure.
-+ */
-+struct kdbus_name_registry *kdbus_name_registry_new(void)
-+{
-+ struct kdbus_name_registry *r;
-+
-+ r = kmalloc(sizeof(*r), GFP_KERNEL);
-+ if (!r)
-+ return ERR_PTR(-ENOMEM);
-+
-+ hash_init(r->entries_hash);
-+ init_rwsem(&r->rwlock);
-+ r->name_seq_last = 0;
-+
-+ return r;
-+}
-+
-+/**
-+ * kdbus_name_registry_free() - free name registry
-+ * @r: name registry to free, or NULL
-+ *
-+ * Free a name registry and cleanup all internal objects. This is a no-op if
-+ * you pass NULL as registry.
-+ */
-+void kdbus_name_registry_free(struct kdbus_name_registry *r)
-+{
-+ if (!r)
-+ return;
-+
-+ WARN_ON(!hash_empty(r->entries_hash));
-+ kfree(r);
-+}
-+
-+/**
-+ * kdbus_name_lookup_unlocked() - lookup name in registry
-+ * @reg: name registry
-+ * @name: name to lookup
-+ *
-+ * This looks up @name in the given name-registry and returns the
-+ * kdbus_name_entry object. The caller must hold the registry-lock and must not
-+ * access the returned object after releasing the lock.
-+ *
-+ * Return: Pointer to name-entry, or NULL if not found.
-+ */
-+struct kdbus_name_entry *
-+kdbus_name_lookup_unlocked(struct kdbus_name_registry *reg, const char *name)
-+{
-+ return kdbus_name_entry_find(reg, kdbus_strhash(name), name);
-+}
-+
-+static int kdbus_name_become_activator(struct kdbus_name_owner *owner,
-+ u64 *return_flags)
-+{
-+ if (kdbus_name_owner_is_used(owner))
-+ return -EALREADY;
-+ if (owner->name->activator)
-+ return -EEXIST;
-+
-+ owner->name->activator = owner;
-+ owner->flags |= KDBUS_NAME_ACTIVATOR;
-+
-+ if (kdbus_name_entry_first(owner->name)) {
-+ owner->flags |= KDBUS_NAME_IN_QUEUE;
-+ } else {
-+ owner->flags |= KDBUS_NAME_PRIMARY;
-+ kdbus_notify_name_change(owner->conn->ep->bus,
-+ KDBUS_ITEM_NAME_ADD,
-+ 0, owner->conn->id,
-+ 0, owner->flags,
-+ owner->name->name);
-+ }
-+
-+ if (return_flags)
-+ *return_flags = owner->flags | KDBUS_NAME_ACQUIRED;
-+
-+ return 0;
-+}
-+
-+static int kdbus_name_update(struct kdbus_name_owner *owner, u64 flags,
-+ u64 *return_flags)
-+{
-+ struct kdbus_name_owner *primary, *activator;
-+ struct kdbus_name_entry *name;
-+ struct kdbus_bus *bus;
-+ u64 nflags = 0;
-+ int ret = 0;
-+
-+ name = owner->name;
-+ bus = owner->conn->ep->bus;
-+ primary = kdbus_name_entry_first(name);
-+ activator = name->activator;
-+
-+ /* cannot be activator and acquire a name */
-+ if (owner == activator)
-+ return -EUCLEAN;
-+
-+ /* update saved flags */
-+ owner->flags = flags & KDBUS_NAME_SAVED_MASK;
-+
-+ if (!primary) {
-+ /*
-+ * No primary owner (but maybe an activator). Take over the
-+ * name.
-+ */
-+
-+ list_add(&owner->name_entry, &name->queue);
-+ owner->flags |= KDBUS_NAME_PRIMARY;
-+ nflags |= KDBUS_NAME_ACQUIRED;
-+
-+ /* move messages to new owner on activation */
-+ if (activator) {
-+ kdbus_conn_move_messages(owner->conn, activator->conn,
-+ name->name_id);
-+ kdbus_notify_name_change(bus, KDBUS_ITEM_NAME_CHANGE,
-+ activator->conn->id, owner->conn->id,
-+ activator->flags, owner->flags,
-+ name->name);
-+ activator->flags &= ~KDBUS_NAME_PRIMARY;
-+ activator->flags |= KDBUS_NAME_IN_QUEUE;
-+ } else {
-+ kdbus_notify_name_change(bus, KDBUS_ITEM_NAME_ADD,
-+ 0, owner->conn->id,
-+ 0, owner->flags,
-+ name->name);
-+ }
-+
-+ } else if (owner == primary) {
-+ /*
-+ * Already the primary owner of the name, flags were already
-+ * updated. Nothing to do.
-+ */
-+
-+ owner->flags |= KDBUS_NAME_PRIMARY;
-+
-+ } else if ((primary->flags & KDBUS_NAME_ALLOW_REPLACEMENT) &&
-+ (flags & KDBUS_NAME_REPLACE_EXISTING)) {
-+ /*
-+ * We're not the primary owner but can replace it. Move us
-+ * ahead of the primary owner and acquire the name (possibly
-+ * skipping queued owners ahead of us).
-+ */
-+
-+ list_del_init(&owner->name_entry);
-+ list_add(&owner->name_entry, &name->queue);
-+ owner->flags |= KDBUS_NAME_PRIMARY;
-+ nflags |= KDBUS_NAME_ACQUIRED;
-+
-+ kdbus_notify_name_change(bus, KDBUS_ITEM_NAME_CHANGE,
-+ primary->conn->id, owner->conn->id,
-+ primary->flags, owner->flags,
-+ name->name);
-+
-+ /* requeue old primary, or drop if queueing not wanted */
-+ if (primary->flags & KDBUS_NAME_QUEUE) {
-+ primary->flags &= ~KDBUS_NAME_PRIMARY;
-+ primary->flags |= KDBUS_NAME_IN_QUEUE;
-+ } else {
-+ list_del_init(&primary->name_entry);
-+ kdbus_name_owner_free(primary);
-+ }
-+
-+ } else if (flags & KDBUS_NAME_QUEUE) {
-+ /*
-+ * Name is already occupied and we cannot take it over, but
-+ * queuing is allowed. Put us silently on the queue, if not
-+ * already there.
-+ */
-+
-+ owner->flags |= KDBUS_NAME_IN_QUEUE;
-+ if (!kdbus_name_owner_is_used(owner)) {
-+ list_add_tail(&owner->name_entry, &name->queue);
-+ nflags |= KDBUS_NAME_ACQUIRED;
-+ }
-+ } else if (kdbus_name_owner_is_used(owner)) {
-+ /*
-+ * Already queued on name, but re-queueing was not requested.
-+ * Make sure to unlink it from the name, the caller is
-+ * responsible for releasing it.
-+ */
-+
-+ list_del_init(&owner->name_entry);
-+ } else {
-+ /*
-+ * Name is already claimed and queueing is not requested.
-+ * Return error to the caller.
-+ */
-+
-+ ret = -EEXIST;
-+ }
-+
-+ if (return_flags)
-+ *return_flags = owner->flags | nflags;
-+
-+ return ret;
-+}
-+
-+int kdbus_name_acquire(struct kdbus_name_registry *reg,
-+ struct kdbus_conn *conn, const char *name_str,
-+ u64 flags, u64 *return_flags)
-+{
-+ struct kdbus_name_entry *name = NULL;
-+ struct kdbus_name_owner *owner = NULL;
-+ u32 hash;
-+ int ret;
-+
-+ kdbus_conn_assert_active(conn);
-+
-+ down_write(®->rwlock);
-+
-+ /*
-+ * Verify the connection has access to the name. Do this before testing
-+ * for double-acquisitions and other errors to make sure we do not leak
-+ * information about this name through possible custom endpoints.
-+ */
-+ if (!kdbus_conn_policy_own_name(conn, current_cred(), name_str)) {
-+ ret = -EPERM;
-+ goto exit;
-+ }
-+
-+ /*
-+ * Lookup the name entry. If it already exists, search for an owner
-+ * entry as we might already own that name. If either does not exist,
-+ * we will allocate a fresh one.
-+ */
-+ hash = kdbus_strhash(name_str);
-+ name = kdbus_name_entry_find(reg, hash, name_str);
-+ if (name) {
-+ owner = kdbus_name_owner_find(name, conn);
-+ } else {
-+ name = kdbus_name_entry_new(reg, hash, name_str);
-+ if (IS_ERR(name)) {
-+ ret = PTR_ERR(name);
-+ name = NULL;
-+ goto exit;
-+ }
-+ }
-+
-+ /* create name owner object if not already queued */
-+ if (!owner) {
-+ owner = kdbus_name_owner_new(conn, name, flags);
-+ if (IS_ERR(owner)) {
-+ ret = PTR_ERR(owner);
-+ owner = NULL;
-+ goto exit;
-+ }
-+ }
-+
-+ if (flags & KDBUS_NAME_ACTIVATOR)
-+ ret = kdbus_name_become_activator(owner, return_flags);
-+ else
-+ ret = kdbus_name_update(owner, flags, return_flags);
-+ if (ret < 0)
-+ goto exit;
-+
-+exit:
-+ if (owner && !kdbus_name_owner_is_used(owner))
-+ kdbus_name_owner_free(owner);
-+ if (name && !kdbus_name_entry_is_used(name))
-+ kdbus_name_entry_free(name);
-+ up_write(®->rwlock);
-+ kdbus_notify_flush(conn->ep->bus);
-+ return ret;
-+}
-+
-+static void kdbus_name_release_unlocked(struct kdbus_name_owner *owner)
-+{
-+ struct kdbus_name_owner *primary, *next;
-+ struct kdbus_name_entry *name;
-+
-+ name = owner->name;
-+ primary = kdbus_name_entry_first(name);
-+
-+ list_del_init(&owner->name_entry);
-+ if (owner == name->activator)
-+ name->activator = NULL;
-+
-+ if (!primary || owner == primary) {
-+ next = kdbus_name_entry_first(name);
-+ if (!next)
-+ next = name->activator;
-+
-+ if (next) {
-+ /* hand to next in queue */
-+ next->flags &= ~KDBUS_NAME_IN_QUEUE;
-+ next->flags |= KDBUS_NAME_PRIMARY;
-+ if (next == name->activator)
-+ kdbus_conn_move_messages(next->conn,
-+ owner->conn,
-+ name->name_id);
-+
-+ kdbus_notify_name_change(owner->conn->ep->bus,
-+ KDBUS_ITEM_NAME_CHANGE,
-+ owner->conn->id, next->conn->id,
-+ owner->flags, next->flags,
-+ name->name);
-+ } else {
-+ kdbus_notify_name_change(owner->conn->ep->bus,
-+ KDBUS_ITEM_NAME_REMOVE,
-+ owner->conn->id, 0,
-+ owner->flags, 0,
-+ name->name);
-+ }
-+ }
-+
-+ kdbus_name_owner_free(owner);
-+ if (!kdbus_name_entry_is_used(name))
-+ kdbus_name_entry_free(name);
-+}
-+
-+static int kdbus_name_release(struct kdbus_name_registry *reg,
-+ struct kdbus_conn *conn,
-+ const char *name_str)
-+{
-+ struct kdbus_name_owner *owner;
-+ struct kdbus_name_entry *name;
-+ int ret = 0;
-+
-+ down_write(®->rwlock);
-+ name = kdbus_name_entry_find(reg, kdbus_strhash(name_str), name_str);
-+ if (name) {
-+ owner = kdbus_name_owner_find(name, conn);
-+ if (owner)
-+ kdbus_name_release_unlocked(owner);
-+ else
-+ ret = -EADDRINUSE;
-+ } else {
-+ ret = -ESRCH;
-+ }
-+ up_write(®->rwlock);
-+
-+ kdbus_notify_flush(conn->ep->bus);
-+ return ret;
-+}
-+
-+/**
-+ * kdbus_name_release_all() - remove all name entries of a given connection
-+ * @reg: name registry
-+ * @conn: connection
-+ */
-+void kdbus_name_release_all(struct kdbus_name_registry *reg,
-+ struct kdbus_conn *conn)
-+{
-+ struct kdbus_name_owner *owner;
-+
-+ down_write(®->rwlock);
-+
-+ while ((owner = list_first_entry_or_null(&conn->names_list,
-+ struct kdbus_name_owner,
-+ conn_entry)))
-+ kdbus_name_release_unlocked(owner);
-+
-+ up_write(®->rwlock);
-+
-+ kdbus_notify_flush(conn->ep->bus);
-+}
-+
-+/**
-+ * kdbus_name_is_valid() - check if a name is valid
-+ * @p: The name to check
-+ * @allow_wildcard: Whether or not to allow a wildcard name
-+ *
-+ * A name is valid if all of the following criterias are met:
-+ *
-+ * - The name has two or more elements separated by a period ('.') character.
-+ * - All elements must contain at least one character.
-+ * - Each element must only contain the ASCII characters "[A-Z][a-z][0-9]_-"
-+ * and must not begin with a digit.
-+ * - The name must not exceed KDBUS_NAME_MAX_LEN.
-+ * - If @allow_wildcard is true, the name may end on '.*'
-+ */
-+bool kdbus_name_is_valid(const char *p, bool allow_wildcard)
-+{
-+ bool dot, found_dot = false;
-+ const char *q;
-+
-+ for (dot = true, q = p; *q; q++) {
-+ if (*q == '.') {
-+ if (dot)
-+ return false;
-+
-+ found_dot = true;
-+ dot = true;
-+ } else {
-+ bool good;
-+
-+ good = isalpha(*q) || (!dot && isdigit(*q)) ||
-+ *q == '_' || *q == '-' ||
-+ (allow_wildcard && dot &&
-+ *q == '*' && *(q + 1) == '\0');
-+
-+ if (!good)
-+ return false;
-+
-+ dot = false;
-+ }
-+ }
-+
-+ if (q - p > KDBUS_NAME_MAX_LEN)
-+ return false;
-+
-+ if (dot)
-+ return false;
-+
-+ if (!found_dot)
-+ return false;
-+
-+ return true;
-+}
-+
-+/**
-+ * kdbus_cmd_name_acquire() - handle KDBUS_CMD_NAME_ACQUIRE
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_name_acquire(struct kdbus_conn *conn, void __user *argp)
-+{
-+ const char *item_name;
-+ struct kdbus_cmd *cmd;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_NAME, .mandatory = true },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_NAME_REPLACE_EXISTING |
-+ KDBUS_NAME_ALLOW_REPLACEMENT |
-+ KDBUS_NAME_QUEUE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ if (!kdbus_conn_is_ordinary(conn))
-+ return -EOPNOTSUPP;
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ item_name = argv[1].item->str;
-+ if (!kdbus_name_is_valid(item_name, false)) {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
-+
-+ ret = kdbus_name_acquire(conn->ep->bus->name_registry, conn, item_name,
-+ cmd->flags, &cmd->return_flags);
-+
-+exit:
-+ return kdbus_args_clear(&args, ret);
-+}
-+
-+/**
-+ * kdbus_cmd_name_release() - handle KDBUS_CMD_NAME_RELEASE
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_name_release(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_cmd *cmd;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ { .type = KDBUS_ITEM_NAME, .mandatory = true },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ if (!kdbus_conn_is_ordinary(conn))
-+ return -EOPNOTSUPP;
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ ret = kdbus_name_release(conn->ep->bus->name_registry, conn,
-+ argv[1].item->str);
-+ return kdbus_args_clear(&args, ret);
-+}
-+
-+static int kdbus_list_write(struct kdbus_conn *conn,
-+ struct kdbus_conn *c,
-+ struct kdbus_pool_slice *slice,
-+ size_t *pos,
-+ struct kdbus_name_owner *o,
-+ bool write)
-+{
-+ struct kvec kvec[4];
-+ size_t cnt = 0;
-+ int ret;
-+
-+ /* info header */
-+ struct kdbus_info info = {
-+ .size = 0,
-+ .id = c->id,
-+ .flags = c->flags,
-+ };
-+
-+ /* fake the header of a kdbus_name item */
-+ struct {
-+ u64 size;
-+ u64 type;
-+ u64 flags;
-+ } h = {};
-+
-+ if (o && !kdbus_conn_policy_see_name_unlocked(conn, current_cred(),
-+ o->name->name))
-+ return 0;
-+
-+ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &info.size);
-+
-+ /* append name */
-+ if (o) {
-+ size_t slen = strlen(o->name->name) + 1;
-+
-+ h.size = offsetof(struct kdbus_item, name.name) + slen;
-+ h.type = KDBUS_ITEM_OWNED_NAME;
-+ h.flags = o->flags;
-+
-+ kdbus_kvec_set(&kvec[cnt++], &h, sizeof(h), &info.size);
-+ kdbus_kvec_set(&kvec[cnt++], o->name->name, slen, &info.size);
-+ cnt += !!kdbus_kvec_pad(&kvec[cnt], &info.size);
-+ }
-+
-+ if (write) {
-+ ret = kdbus_pool_slice_copy_kvec(slice, *pos, kvec,
-+ cnt, info.size);
-+ if (ret < 0)
-+ return ret;
-+ }
-+
-+ *pos += info.size;
-+ return 0;
-+}
-+
-+static int kdbus_list_all(struct kdbus_conn *conn, u64 flags,
-+ struct kdbus_pool_slice *slice,
-+ size_t *pos, bool write)
-+{
-+ struct kdbus_conn *c;
-+ size_t p = *pos;
-+ int ret, i;
-+
-+ hash_for_each(conn->ep->bus->conn_hash, i, c, hentry) {
-+ bool added = false;
-+
-+ /* skip monitors */
-+ if (kdbus_conn_is_monitor(c))
-+ continue;
-+
-+ /* all names the connection owns */
-+ if (flags & (KDBUS_LIST_NAMES |
-+ KDBUS_LIST_ACTIVATORS |
-+ KDBUS_LIST_QUEUED)) {
-+ struct kdbus_name_owner *o;
-+
-+ list_for_each_entry(o, &c->names_list, conn_entry) {
-+ if (o->flags & KDBUS_NAME_ACTIVATOR) {
-+ if (!(flags & KDBUS_LIST_ACTIVATORS))
-+ continue;
-+
-+ ret = kdbus_list_write(conn, c, slice,
-+ &p, o, write);
-+ if (ret < 0) {
-+ mutex_unlock(&c->lock);
-+ return ret;
-+ }
-+
-+ added = true;
-+ } else if (o->flags & KDBUS_NAME_IN_QUEUE) {
-+ if (!(flags & KDBUS_LIST_QUEUED))
-+ continue;
-+
-+ ret = kdbus_list_write(conn, c, slice,
-+ &p, o, write);
-+ if (ret < 0) {
-+ mutex_unlock(&c->lock);
-+ return ret;
-+ }
-+
-+ added = true;
-+ } else if (flags & KDBUS_LIST_NAMES) {
-+ ret = kdbus_list_write(conn, c, slice,
-+ &p, o, write);
-+ if (ret < 0) {
-+ mutex_unlock(&c->lock);
-+ return ret;
-+ }
-+
-+ added = true;
-+ }
-+ }
-+ }
-+
-+ /* nothing added so far, just add the unique ID */
-+ if (!added && (flags & KDBUS_LIST_UNIQUE)) {
-+ ret = kdbus_list_write(conn, c, slice, &p, NULL, write);
-+ if (ret < 0)
-+ return ret;
-+ }
-+ }
-+
-+ *pos = p;
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_cmd_list() - handle KDBUS_CMD_LIST
-+ * @conn: connection to operate on
-+ * @argp: command payload
-+ *
-+ * Return: >=0 on success, negative error code on failure.
-+ */
-+int kdbus_cmd_list(struct kdbus_conn *conn, void __user *argp)
-+{
-+ struct kdbus_name_registry *reg = conn->ep->bus->name_registry;
-+ struct kdbus_pool_slice *slice = NULL;
-+ struct kdbus_cmd_list *cmd;
-+ size_t pos, size;
-+ int ret;
-+
-+ struct kdbus_arg argv[] = {
-+ { .type = KDBUS_ITEM_NEGOTIATE },
-+ };
-+ struct kdbus_args args = {
-+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
-+ KDBUS_LIST_UNIQUE |
-+ KDBUS_LIST_NAMES |
-+ KDBUS_LIST_ACTIVATORS |
-+ KDBUS_LIST_QUEUED,
-+ .argv = argv,
-+ .argc = ARRAY_SIZE(argv),
-+ };
-+
-+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
-+
-+ /* lock order: domain -> bus -> ep -> names -> conn */
-+ down_read(®->rwlock);
-+ down_read(&conn->ep->bus->conn_rwlock);
-+ down_read(&conn->ep->policy_db.entries_rwlock);
-+
-+ /* size of records */
-+ size = 0;
-+ ret = kdbus_list_all(conn, cmd->flags, NULL, &size, false);
-+ if (ret < 0)
-+ goto exit_unlock;
-+
-+ if (size == 0) {
-+ kdbus_pool_publish_empty(conn->pool, &cmd->offset,
-+ &cmd->list_size);
-+ } else {
-+ slice = kdbus_pool_slice_alloc(conn->pool, size, false);
-+ if (IS_ERR(slice)) {
-+ ret = PTR_ERR(slice);
-+ slice = NULL;
-+ goto exit_unlock;
-+ }
-+
-+ /* copy the records */
-+ pos = 0;
-+ ret = kdbus_list_all(conn, cmd->flags, slice, &pos, true);
-+ if (ret < 0)
-+ goto exit_unlock;
-+
-+ WARN_ON(pos != size);
-+ kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->list_size);
-+ }
-+
-+ if (kdbus_member_set_user(&cmd->offset, argp, typeof(*cmd), offset) ||
-+ kdbus_member_set_user(&cmd->list_size, argp,
-+ typeof(*cmd), list_size))
-+ ret = -EFAULT;
-+
-+exit_unlock:
-+ up_read(&conn->ep->policy_db.entries_rwlock);
-+ up_read(&conn->ep->bus->conn_rwlock);
-+ up_read(®->rwlock);
-+ kdbus_pool_slice_release(slice);
-+ return kdbus_args_clear(&args, ret);
-+}
-diff --git a/ipc/kdbus/names.h b/ipc/kdbus/names.h
-new file mode 100644
-index 0000000..edac59d
---- /dev/null
-+++ b/ipc/kdbus/names.h
-@@ -0,0 +1,105 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_NAMES_H
-+#define __KDBUS_NAMES_H
-+
-+#include <linux/hashtable.h>
-+#include <linux/rwsem.h>
-+
-+struct kdbus_name_entry;
-+struct kdbus_name_owner;
-+struct kdbus_name_registry;
-+
-+/**
-+ * struct kdbus_name_registry - names registered for a bus
-+ * @entries_hash: Map of entries
-+ * @lock: Registry data lock
-+ * @name_seq_last: Last used sequence number to assign to a name entry
-+ */
-+struct kdbus_name_registry {
-+ DECLARE_HASHTABLE(entries_hash, 8);
-+ struct rw_semaphore rwlock;
-+ u64 name_seq_last;
-+};
-+
-+/**
-+ * struct kdbus_name_entry - well-know name entry
-+ * @name_id: sequence number of name entry to be able to uniquely
-+ * identify a name over its registration lifetime
-+ * @activator: activator of this name, or NULL
-+ * @queue: list of queued owners
-+ * @hentry: entry in registry map
-+ * @name: well-known name
-+ */
-+struct kdbus_name_entry {
-+ u64 name_id;
-+ struct kdbus_name_owner *activator;
-+ struct list_head queue;
-+ struct hlist_node hentry;
-+ char name[];
-+};
-+
-+/**
-+ * struct kdbus_name_owner - owner of a well-known name
-+ * @flags: KDBUS_NAME_* flags of this owner
-+ * @conn: connection owning the name
-+ * @name: name that is owned
-+ * @conn_entry: link into @conn
-+ * @name_entry: link into @name
-+ */
-+struct kdbus_name_owner {
-+ u64 flags;
-+ struct kdbus_conn *conn;
-+ struct kdbus_name_entry *name;
-+ struct list_head conn_entry;
-+ struct list_head name_entry;
-+};
-+
-+bool kdbus_name_is_valid(const char *p, bool allow_wildcard);
-+
-+struct kdbus_name_registry *kdbus_name_registry_new(void);
-+void kdbus_name_registry_free(struct kdbus_name_registry *reg);
-+
-+struct kdbus_name_entry *
-+kdbus_name_lookup_unlocked(struct kdbus_name_registry *reg, const char *name);
-+
-+int kdbus_name_acquire(struct kdbus_name_registry *reg,
-+ struct kdbus_conn *conn, const char *name,
-+ u64 flags, u64 *return_flags);
-+void kdbus_name_release_all(struct kdbus_name_registry *reg,
-+ struct kdbus_conn *conn);
-+
-+int kdbus_cmd_name_acquire(struct kdbus_conn *conn, void __user *argp);
-+int kdbus_cmd_name_release(struct kdbus_conn *conn, void __user *argp);
-+int kdbus_cmd_list(struct kdbus_conn *conn, void __user *argp);
-+
-+/**
-+ * kdbus_name_get_owner() - get current owner of a name
-+ * @name: name to get current owner of
-+ *
-+ * This returns a pointer to the current owner of a name (or its activator if
-+ * there is no owner). The caller must make sure @name is valid and does not
-+ * vanish.
-+ *
-+ * Return: Pointer to current owner or NULL if there is none.
-+ */
-+static inline struct kdbus_name_owner *
-+kdbus_name_get_owner(struct kdbus_name_entry *name)
-+{
-+ return list_first_entry_or_null(&name->queue, struct kdbus_name_owner,
-+ name_entry) ? : name->activator;
-+}
-+
-+#endif
-diff --git a/ipc/kdbus/node.c b/ipc/kdbus/node.c
-new file mode 100644
-index 0000000..89f58bc
---- /dev/null
-+++ b/ipc/kdbus/node.c
-@@ -0,0 +1,897 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/atomic.h>
-+#include <linux/fs.h>
-+#include <linux/idr.h>
-+#include <linux/kdev_t.h>
-+#include <linux/rbtree.h>
-+#include <linux/rwsem.h>
-+#include <linux/sched.h>
-+#include <linux/slab.h>
-+#include <linux/wait.h>
-+
-+#include "bus.h"
-+#include "domain.h"
-+#include "endpoint.h"
-+#include "fs.h"
-+#include "handle.h"
-+#include "node.h"
-+#include "util.h"
-+
-+/**
-+ * DOC: kdbus nodes
-+ *
-+ * Nodes unify lifetime management across exposed kdbus objects and provide a
-+ * hierarchy. Each kdbus object, that might be exposed to user-space, has a
-+ * kdbus_node object embedded and is linked into the hierarchy. Each node can
-+ * have any number (0-n) of child nodes linked. Each child retains a reference
-+ * to its parent node. For root-nodes, the parent is NULL.
-+ *
-+ * Each node object goes through a bunch of states during it's lifetime:
-+ * * NEW
-+ * * LINKED (can be skipped by NEW->FREED transition)
-+ * * ACTIVE (can be skipped by LINKED->INACTIVE transition)
-+ * * INACTIVE
-+ * * DRAINED
-+ * * FREED
-+ *
-+ * Each node is allocated by the caller and initialized via kdbus_node_init().
-+ * This never fails and sets the object into state NEW. From now on, ref-counts
-+ * on the node manage its lifetime. During init, the ref-count is set to 1. Once
-+ * it drops to 0, the node goes to state FREED and the node->free_cb() callback
-+ * is called to deallocate any memory.
-+ *
-+ * After initializing a node, you usually link it into the hierarchy. You need
-+ * to provide a parent node and a name. The node will be linked as child to the
-+ * parent and a globally unique ID is assigned to the child. The name of the
-+ * child must be unique for all children of this parent. Otherwise, linking the
-+ * child will fail with -EEXIST.
-+ * Note that the child is not marked active, yet. Admittedly, it prevents any
-+ * other node from being linked with the same name (thus, it reserves that
-+ * name), but any child-lookup (via name or unique ID) will never return this
-+ * child unless it has been marked active.
-+ *
-+ * Once successfully linked, you can use kdbus_node_activate() to activate a
-+ * child. This will mark the child active. This state can be skipped by directly
-+ * deactivating the child via kdbus_node_deactivate() (see below).
-+ * By activating a child, you enable any lookups on this child to succeed from
-+ * now on. Furthermore, any code that got its hands on a reference to the node,
-+ * can from now on "acquire" the node.
-+ *
-+ * Active References (or: 'acquiring' and 'releasing' a node)
-+ * Additionally to normal object references, nodes support something we call
-+ * "active references". An active reference can be acquired via
-+ * kdbus_node_acquire() and released via kdbus_node_release(). A caller
-+ * _must_ own a normal object reference whenever calling those functions.
-+ * Unlike object references, acquiring an active reference can fail (by
-+ * returning 'false' from kdbus_node_acquire()). An active reference can
-+ * only be acquired if the node is marked active. If it is not marked
-+ * active, yet, or if it was already deactivated, no more active references
-+ * can be acquired, ever!
-+ * Active references are used to track tasks working on a node. Whenever a
-+ * task enters kernel-space to perform an action on a node, it acquires an
-+ * active reference, performs the action and releases the reference again.
-+ * While holding an active reference, the node is guaranteed to stay active.
-+ * If the node is deactivated in parallel, the node is marked as
-+ * deactivated, then we wait for all active references to be dropped, before
-+ * we finally proceed with any cleanups. That is, if you hold an active
-+ * reference to a node, any resources that are bound to the "active" state
-+ * are guaranteed to stay accessible until you release your reference.
-+ *
-+ * Active-references are very similar to rw-locks, where acquiring a node is
-+ * equal to try-read-lock and releasing to read-unlock. Deactivating a node
-+ * means write-lock and never releasing it again.
-+ * Unlike rw-locks, the 'active reference' concept is more versatile and
-+ * avoids unusual rw-lock usage (never releasing a write-lock..).
-+ *
-+ * It is safe to acquire multiple active-references recursively. But you
-+ * need to check the return value of kdbus_node_acquire() on _each_ call. It
-+ * may stop granting references at _any_ time.
-+ *
-+ * You're free to perform any operations you want while holding an active
-+ * reference, except sleeping for an indefinite period. Sleeping for a fixed
-+ * amount of time is fine, but you usually should not wait on wait-queues
-+ * without a timeout.
-+ * For example, if you wait for I/O to happen, you should gather all data
-+ * and schedule the I/O operation, then release your active reference and
-+ * wait for it to complete. Then try to acquire a new reference. If it
-+ * fails, perform any cleanup (the node is now dead). Otherwise, you can
-+ * finish your operation.
-+ *
-+ * All nodes can be deactivated via kdbus_node_deactivate() at any time. You can
-+ * call this multiple times, even in parallel or on nodes that were never
-+ * linked, and it will just work. The only restriction is, you must not hold an
-+ * active reference when calling kdbus_node_deactivate().
-+ * By deactivating a node, it is immediately marked inactive. Then, we wait for
-+ * all active references to be released (called 'draining' the node). This
-+ * shouldn't take very long as we don't perform long-lasting operations while
-+ * holding an active reference. Note that once the node is marked inactive, no
-+ * new active references can be acquired.
-+ * Once all active references are dropped, the node is considered 'drained'. Now
-+ * kdbus_node_deactivate() is called on each child of the node before we
-+ * continue deactivating our node. That is, once all children are entirely
-+ * deactivated, we call ->release_cb() of our node. ->release_cb() can release
-+ * any resources on that node which are bound to the "active" state of a node.
-+ * When done, we unlink the node from its parent rb-tree, mark it as
-+ * 'released' and return.
-+ * If kdbus_node_deactivate() is called multiple times (even in parallel), all
-+ * but one caller will just wait until the node is fully deactivated. That is,
-+ * one random caller of kdbus_node_deactivate() is selected to call
-+ * ->release_cb() and cleanup the node. Only once all this is done, all other
-+ * callers will return from kdbus_node_deactivate(). That is, it doesn't matter
-+ * whether you're the selected caller or not, it will only return after
-+ * everything is fully done.
-+ *
-+ * When a node is activated, we acquire a normal object reference to the node.
-+ * This reference is dropped after deactivation is fully done (and only iff the
-+ * node really was activated). This allows callers to link+activate a child node
-+ * and then drop all refs. The node will be deactivated together with the
-+ * parent, and then be freed when this reference is dropped.
-+ *
-+ * Currently, nodes provide a bunch of resources that external code can use
-+ * directly. This includes:
-+ *
-+ * * node->waitq: Each node has its own wait-queue that is used to manage
-+ * the 'active' state. When a node is deactivated, we wait on
-+ * this queue until all active refs are dropped. Analogously,
-+ * when you release an active reference on a deactivated
-+ * node, and the active ref-count drops to 0, we wake up a
-+ * single thread on this queue. Furthermore, once the
-+ * ->release_cb() callback finished, we wake up all waiters.
-+ * The node-owner is free to re-use this wait-queue for other
-+ * purposes. As node-management uses this queue only during
-+ * deactivation, it is usually totally fine to re-use the
-+ * queue for other, preferably low-overhead, use-cases.
-+ *
-+ * * node->type: This field defines the type of the owner of this node. It
-+ * must be set during node initialization and must remain
-+ * constant. The node management never looks at this value,
-+ * but external users might use to gain access to the owner
-+ * object of a node.
-+ * It is totally up to the owner of the node to define what
-+ * their type means. Usually it means you can access the
-+ * parent structure via container_of(), as long as you hold an
-+ * active reference to the node.
-+ *
-+ * * node->free_cb: callback after all references are dropped
-+ * node->release_cb: callback during node deactivation
-+ * These fields must be set by the node owner during
-+ * node initialization. They must remain constant. If
-+ * NULL, they're skipped.
-+ *
-+ * * node->mode: filesystem access modes
-+ * node->uid: filesystem owner uid
-+ * node->gid: filesystem owner gid
-+ * These fields must be set by the node owner during node
-+ * initialization. They must remain constant and may be
-+ * accessed by other callers to properly initialize
-+ * filesystem nodes.
-+ *
-+ * * node->id: This is an unsigned 32bit integer allocated by an IDA. It is
-+ * always kept as small as possible during allocation and is
-+ * globally unique across all nodes allocated by this module. 0
-+ * is reserved as "not assigned" and is the default.
-+ * The ID is assigned during kdbus_node_link() and is kept until
-+ * the object is freed. Thus, the ID surpasses the active
-+ * lifetime of a node. As long as you hold an object reference
-+ * to a node (and the node was linked once), the ID is valid and
-+ * unique.
-+ *
-+ * * node->name: name of this node
-+ * node->hash: 31bit hash-value of @name (range [2..INT_MAX-1])
-+ * These values follow the same lifetime rules as node->id.
-+ * They're initialized when the node is linked and then remain
-+ * constant until the last object reference is dropped.
-+ * Unlike the id, the name is only unique across all siblings
-+ * and only until the node is deactivated. Currently, the name
-+ * is even unique if linked but not activated, yet. This might
-+ * change in the future, though. Code should not rely on this.
-+ *
-+ * * node->lock: lock to protect node->children, node->rb, node->parent
-+ * * node->parent: Reference to parent node. This is set during LINK time
-+ * and is dropped during destruction. You must not access
-+ * it unless you hold an active reference to the node or if
-+ * you know the node is dead.
-+ * * node->children: rb-tree of all linked children of this node. You must
-+ * not access this directly, but use one of the iterator
-+ * or lookup helpers.
-+ */
-+
-+/*
-+ * Bias values track states of "active references". They're all negative. If a
-+ * node is active, its active-ref-counter is >=0 and tracks all active
-+ * references. Once a node is deactivaed, we subtract NODE_BIAS. This means, the
-+ * counter is now negative but still counts the active references. Once it drops
-+ * to exactly NODE_BIAS, we know all active references were dropped. Exactly one
-+ * thread will change it to NODE_RELEASE now, perform cleanup and then put it
-+ * into NODE_DRAINED. Once drained, all other threads that tried deactivating
-+ * the node will now be woken up (thus, they wait until the node is fully done).
-+ * The initial state during node-setup is NODE_NEW. If a node is directly
-+ * deactivated without having ever been active, it is put into
-+ * NODE_RELEASE_DIRECT instead of NODE_BIAS. This tracks this one-bit state
-+ * across node-deactivation. The task putting it into NODE_RELEASE now knows
-+ * whether the node was active before or not.
-+ *
-+ * Some archs implement atomic_sub(v) with atomic_add(-v), so reserve INT_MIN
-+ * to avoid overflows if multiplied by -1.
-+ */
-+#define KDBUS_NODE_BIAS (INT_MIN + 5)
-+#define KDBUS_NODE_RELEASE_DIRECT (KDBUS_NODE_BIAS - 1)
-+#define KDBUS_NODE_RELEASE (KDBUS_NODE_BIAS - 2)
-+#define KDBUS_NODE_DRAINED (KDBUS_NODE_BIAS - 3)
-+#define KDBUS_NODE_NEW (KDBUS_NODE_BIAS - 4)
-+
-+/* global unique ID mapping for kdbus nodes */
-+DEFINE_IDA(kdbus_node_ida);
-+
-+/**
-+ * kdbus_node_name_hash() - hash a name
-+ * @name: The string to hash
-+ *
-+ * This computes the hash of @name. It is guaranteed to be in the range
-+ * [2..INT_MAX-1]. The values 1, 2 and INT_MAX are unused as they are reserved
-+ * for the filesystem code.
-+ *
-+ * Return: hash value of the passed string
-+ */
-+static unsigned int kdbus_node_name_hash(const char *name)
-+{
-+ unsigned int hash;
-+
-+ /* reserve hash numbers 0, 1 and >=INT_MAX for magic directories */
-+ hash = kdbus_strhash(name) & INT_MAX;
-+ if (hash < 2)
-+ hash += 2;
-+ if (hash >= INT_MAX)
-+ hash = INT_MAX - 1;
-+
-+ return hash;
-+}
-+
-+/**
-+ * kdbus_node_name_compare() - compare a name with a node's name
-+ * @hash: hash of the string to compare the node with
-+ * @name: name to compare the node with
-+ * @node: node to compare the name with
-+ *
-+ * Return: 0 if @name and @hash exactly match the information in @node, or
-+ * an integer less than or greater than zero if @name is found, respectively,
-+ * to be less than or be greater than the string stored in @node.
-+ */
-+static int kdbus_node_name_compare(unsigned int hash, const char *name,
-+ const struct kdbus_node *node)
-+{
-+ if (hash != node->hash)
-+ return hash - node->hash;
-+
-+ return strcmp(name, node->name);
-+}
-+
-+/**
-+ * kdbus_node_init() - initialize a kdbus_node
-+ * @node: Pointer to the node to initialize
-+ * @type: The type the node will have (KDBUS_NODE_*)
-+ *
-+ * The caller is responsible of allocating @node and initializating it to zero.
-+ * Once this call returns, you must use the node_ref() and node_unref()
-+ * functions to manage this node.
-+ */
-+void kdbus_node_init(struct kdbus_node *node, unsigned int type)
-+{
-+ atomic_set(&node->refcnt, 1);
-+ mutex_init(&node->lock);
-+ node->id = 0;
-+ node->type = type;
-+ RB_CLEAR_NODE(&node->rb);
-+ node->children = RB_ROOT;
-+ init_waitqueue_head(&node->waitq);
-+ atomic_set(&node->active, KDBUS_NODE_NEW);
-+}
-+
-+/**
-+ * kdbus_node_link() - link a node into the nodes system
-+ * @node: Pointer to the node to initialize
-+ * @parent: Pointer to a parent node, may be %NULL
-+ * @name: The name of the node (or NULL if root node)
-+ *
-+ * This links a node into the hierarchy. This must not be called multiple times.
-+ * If @parent is NULL, the node becomes a new root node.
-+ *
-+ * This call will fail if @name is not unique across all its siblings or if no
-+ * ID could be allocated. You must not activate a node if linking failed! It is
-+ * safe to deactivate it, though.
-+ *
-+ * Once you linked a node, you must call kdbus_node_deactivate() before you drop
-+ * the last reference (even if you never activate the node).
-+ *
-+ * Return: 0 on success. negative error otherwise.
-+ */
-+int kdbus_node_link(struct kdbus_node *node, struct kdbus_node *parent,
-+ const char *name)
-+{
-+ int ret;
-+
-+ if (WARN_ON(node->type != KDBUS_NODE_DOMAIN && !parent))
-+ return -EINVAL;
-+
-+ if (WARN_ON(parent && !name))
-+ return -EINVAL;
-+
-+ if (name) {
-+ node->name = kstrdup(name, GFP_KERNEL);
-+ if (!node->name)
-+ return -ENOMEM;
-+
-+ node->hash = kdbus_node_name_hash(name);
-+ }
-+
-+ ret = ida_simple_get(&kdbus_node_ida, 1, 0, GFP_KERNEL);
-+ if (ret < 0)
-+ return ret;
-+
-+ node->id = ret;
-+ ret = 0;
-+
-+ if (parent) {
-+ struct rb_node **n, *prev;
-+
-+ if (!kdbus_node_acquire(parent))
-+ return -ESHUTDOWN;
-+
-+ mutex_lock(&parent->lock);
-+
-+ n = &parent->children.rb_node;
-+ prev = NULL;
-+
-+ while (*n) {
-+ struct kdbus_node *pos;
-+ int result;
-+
-+ pos = kdbus_node_from_rb(*n);
-+ prev = *n;
-+ result = kdbus_node_name_compare(node->hash,
-+ node->name,
-+ pos);
-+ if (result == 0) {
-+ ret = -EEXIST;
-+ goto exit_unlock;
-+ }
-+
-+ if (result < 0)
-+ n = &pos->rb.rb_left;
-+ else
-+ n = &pos->rb.rb_right;
-+ }
-+
-+ /* add new node and rebalance the tree */
-+ rb_link_node(&node->rb, prev, n);
-+ rb_insert_color(&node->rb, &parent->children);
-+ node->parent = kdbus_node_ref(parent);
-+
-+exit_unlock:
-+ mutex_unlock(&parent->lock);
-+ kdbus_node_release(parent);
-+ }
-+
-+ return ret;
-+}
-+
-+/**
-+ * kdbus_node_ref() - Acquire object reference
-+ * @node: node to acquire reference to (or NULL)
-+ *
-+ * This acquires a new reference to @node. You must already own a reference when
-+ * calling this!
-+ * If @node is NULL, this is a no-op.
-+ *
-+ * Return: @node is returned
-+ */
-+struct kdbus_node *kdbus_node_ref(struct kdbus_node *node)
-+{
-+ if (node)
-+ atomic_inc(&node->refcnt);
-+ return node;
-+}
-+
-+/**
-+ * kdbus_node_unref() - Drop object reference
-+ * @node: node to drop reference to (or NULL)
-+ *
-+ * This drops an object reference to @node. You must not access the node if you
-+ * no longer own a reference.
-+ * If the ref-count drops to 0, the object will be destroyed (->free_cb will be
-+ * called).
-+ *
-+ * If you linked or activated the node, you must deactivate the node before you
-+ * drop your last reference! If you didn't link or activate the node, you can
-+ * drop any reference you want.
-+ *
-+ * Note that this calls into ->free_cb() and thus _might_ sleep. The ->free_cb()
-+ * callbacks must not acquire any outer locks, though. So you can safely drop
-+ * references while holding locks.
-+ *
-+ * If @node is NULL, this is a no-op.
-+ *
-+ * Return: This always returns NULL
-+ */
-+struct kdbus_node *kdbus_node_unref(struct kdbus_node *node)
-+{
-+ if (node && atomic_dec_and_test(&node->refcnt)) {
-+ struct kdbus_node safe = *node;
-+
-+ WARN_ON(atomic_read(&node->active) != KDBUS_NODE_DRAINED);
-+ WARN_ON(!RB_EMPTY_NODE(&node->rb));
-+
-+ if (node->free_cb)
-+ node->free_cb(node);
-+ if (safe.id > 0)
-+ ida_simple_remove(&kdbus_node_ida, safe.id);
-+
-+ kfree(safe.name);
-+
-+ /*
-+ * kdbusfs relies on the parent to be available even after the
-+ * node was deactivated and unlinked. Therefore, we pin it
-+ * until a node is destroyed.
-+ */
-+ kdbus_node_unref(safe.parent);
-+ }
-+
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_node_is_active() - test whether a node is active
-+ * @node: node to test
-+ *
-+ * This checks whether @node is active. That means, @node was linked and
-+ * activated by the node owner and hasn't been deactivated, yet. If, and only
-+ * if, a node is active, kdbus_node_acquire() will be able to acquire active
-+ * references.
-+ *
-+ * Note that this function does not give any lifetime guarantees. After this
-+ * call returns, the node might be deactivated immediately. Normally, what you
-+ * want is to acquire a real active reference via kdbus_node_acquire().
-+ *
-+ * Return: true if @node is active, false otherwise
-+ */
-+bool kdbus_node_is_active(struct kdbus_node *node)
-+{
-+ return atomic_read(&node->active) >= 0;
-+}
-+
-+/**
-+ * kdbus_node_is_deactivated() - test whether a node was already deactivated
-+ * @node: node to test
-+ *
-+ * This checks whether kdbus_node_deactivate() was called on @node. Note that
-+ * this might be true even if you never deactivated the node directly, but only
-+ * one of its ancestors.
-+ *
-+ * Note that even if this returns 'false', the node might get deactivated
-+ * immediately after the call returns.
-+ *
-+ * Return: true if @node was already deactivated, false if not
-+ */
-+bool kdbus_node_is_deactivated(struct kdbus_node *node)
-+{
-+ int v;
-+
-+ v = atomic_read(&node->active);
-+ return v != KDBUS_NODE_NEW && v < 0;
-+}
-+
-+/**
-+ * kdbus_node_activate() - activate a node
-+ * @node: node to activate
-+ *
-+ * This marks @node as active if, and only if, the node wasn't activated nor
-+ * deactivated, yet, and the parent is still active. Any but the first call to
-+ * kdbus_node_activate() is a no-op.
-+ * If you called kdbus_node_deactivate() before, then even the first call to
-+ * kdbus_node_activate() will be a no-op.
-+ *
-+ * This call doesn't give any lifetime guarantees. The node might get
-+ * deactivated immediately after this call returns. Or the parent might already
-+ * be deactivated, which will make this call a no-op.
-+ *
-+ * If this call successfully activated a node, it will take an object reference
-+ * to it. This reference is dropped after the node is deactivated. Therefore,
-+ * the object owner can safely drop their reference to @node iff they know that
-+ * its parent node will get deactivated at some point. Once the parent node is
-+ * deactivated, it will deactivate all its child and thus drop this reference
-+ * again.
-+ *
-+ * Return: True if this call successfully activated the node, otherwise false.
-+ * Note that this might return false, even if the node is still active
-+ * (eg., if you called this a second time).
-+ */
-+bool kdbus_node_activate(struct kdbus_node *node)
-+{
-+ bool res = false;
-+
-+ mutex_lock(&node->lock);
-+ if (atomic_read(&node->active) == KDBUS_NODE_NEW) {
-+ atomic_sub(KDBUS_NODE_NEW, &node->active);
-+ /* activated nodes have ref +1 */
-+ kdbus_node_ref(node);
-+ res = true;
-+ }
-+ mutex_unlock(&node->lock);
-+
-+ return res;
-+}
-+
-+/**
-+ * kdbus_node_deactivate() - deactivate a node
-+ * @node: The node to deactivate.
-+ *
-+ * This function recursively deactivates this node and all its children. It
-+ * returns only once all children and the node itself were recursively disabled
-+ * (even if you call this function multiple times in parallel).
-+ *
-+ * It is safe to call this function on _any_ node that was initialized _any_
-+ * number of times.
-+ *
-+ * This call may sleep, as it waits for all active references to be dropped.
-+ */
-+void kdbus_node_deactivate(struct kdbus_node *node)
-+{
-+ struct kdbus_node *pos, *child;
-+ struct rb_node *rb;
-+ int v_pre, v_post;
-+
-+ pos = node;
-+
-+ /*
-+ * To avoid recursion, we perform back-tracking while deactivating
-+ * nodes. For each node we enter, we first mark the active-counter as
-+ * deactivated by adding BIAS. If the node as children, we set the first
-+ * child as current position and start over. If the node has no
-+ * children, we drain the node by waiting for all active refs to be
-+ * dropped and then releasing the node.
-+ *
-+ * After the node is released, we set its parent as current position
-+ * and start over. If the current position was the initial node, we're
-+ * done.
-+ *
-+ * Note that this function can be called in parallel by multiple
-+ * callers. We make sure that each node is only released once, and any
-+ * racing caller will wait until the other thread fully released that
-+ * node.
-+ */
-+
-+ for (;;) {
-+ /*
-+ * Add BIAS to node->active to mark it as inactive. If it was
-+ * never active before, immediately mark it as RELEASE_INACTIVE
-+ * so we remember this state.
-+ * We cannot remember v_pre as we might iterate into the
-+ * children, overwriting v_pre, before we can release our node.
-+ */
-+ mutex_lock(&pos->lock);
-+ v_pre = atomic_read(&pos->active);
-+ if (v_pre >= 0)
-+ atomic_add_return(KDBUS_NODE_BIAS, &pos->active);
-+ else if (v_pre == KDBUS_NODE_NEW)
-+ atomic_set(&pos->active, KDBUS_NODE_RELEASE_DIRECT);
-+ mutex_unlock(&pos->lock);
-+
-+ /* wait until all active references were dropped */
-+ wait_event(pos->waitq,
-+ atomic_read(&pos->active) <= KDBUS_NODE_BIAS);
-+
-+ mutex_lock(&pos->lock);
-+ /* recurse into first child if any */
-+ rb = rb_first(&pos->children);
-+ if (rb) {
-+ child = kdbus_node_ref(kdbus_node_from_rb(rb));
-+ mutex_unlock(&pos->lock);
-+ pos = child;
-+ continue;
-+ }
-+
-+ /* mark object as RELEASE */
-+ v_post = atomic_read(&pos->active);
-+ if (v_post == KDBUS_NODE_BIAS ||
-+ v_post == KDBUS_NODE_RELEASE_DIRECT)
-+ atomic_set(&pos->active, KDBUS_NODE_RELEASE);
-+ mutex_unlock(&pos->lock);
-+
-+ /*
-+ * If this is the thread that marked the object as RELEASE, we
-+ * perform the actual release. Otherwise, we wait until the
-+ * release is done and the node is marked as DRAINED.
-+ */
-+ if (v_post == KDBUS_NODE_BIAS ||
-+ v_post == KDBUS_NODE_RELEASE_DIRECT) {
-+ if (pos->release_cb)
-+ pos->release_cb(pos, v_post == KDBUS_NODE_BIAS);
-+
-+ if (pos->parent) {
-+ mutex_lock(&pos->parent->lock);
-+ if (!RB_EMPTY_NODE(&pos->rb)) {
-+ rb_erase(&pos->rb,
-+ &pos->parent->children);
-+ RB_CLEAR_NODE(&pos->rb);
-+ }
-+ mutex_unlock(&pos->parent->lock);
-+ }
-+
-+ /* mark as DRAINED */
-+ atomic_set(&pos->active, KDBUS_NODE_DRAINED);
-+ wake_up_all(&pos->waitq);
-+
-+ /* drop VFS cache */
-+ kdbus_fs_flush(pos);
-+
-+ /*
-+ * If the node was activated and someone subtracted BIAS
-+ * from it to deactivate it, we, and only us, are
-+ * responsible to release the extra ref-count that was
-+ * taken once in kdbus_node_activate().
-+ * If the node was never activated, no-one ever
-+ * subtracted BIAS, but instead skipped that state and
-+ * immediately went to NODE_RELEASE_DIRECT. In that case
-+ * we must not drop the reference.
-+ */
-+ if (v_post == KDBUS_NODE_BIAS)
-+ kdbus_node_unref(pos);
-+ } else {
-+ /* wait until object is DRAINED */
-+ wait_event(pos->waitq,
-+ atomic_read(&pos->active) == KDBUS_NODE_DRAINED);
-+ }
-+
-+ /*
-+ * We're done with the current node. Continue on its parent
-+ * again, which will try deactivating its next child, or itself
-+ * if no child is left.
-+ * If we've reached our initial node again, we are done and
-+ * can safely return.
-+ */
-+ if (pos == node)
-+ break;
-+
-+ child = pos;
-+ pos = pos->parent;
-+ kdbus_node_unref(child);
-+ }
-+}
-+
-+/**
-+ * kdbus_node_acquire() - Acquire an active ref on a node
-+ * @node: The node
-+ *
-+ * This acquires an active-reference to @node. This will only succeed if the
-+ * node is active. You must release this active reference via
-+ * kdbus_node_release() again.
-+ *
-+ * See the introduction to "active references" for more details.
-+ *
-+ * Return: %true if @node was non-NULL and active
-+ */
-+bool kdbus_node_acquire(struct kdbus_node *node)
-+{
-+ return node && atomic_inc_unless_negative(&node->active);
-+}
-+
-+/**
-+ * kdbus_node_release() - Release an active ref on a node
-+ * @node: The node
-+ *
-+ * This releases an active reference that was previously acquired via
-+ * kdbus_node_acquire(). See kdbus_node_acquire() for details.
-+ */
-+void kdbus_node_release(struct kdbus_node *node)
-+{
-+ if (node && atomic_dec_return(&node->active) == KDBUS_NODE_BIAS)
-+ wake_up(&node->waitq);
-+}
-+
-+/**
-+ * kdbus_node_find_child() - Find child by name
-+ * @node: parent node to search through
-+ * @name: name of child node
-+ *
-+ * This searches through all children of @node for a child-node with name @name.
-+ * If not found, or if the child is deactivated, NULL is returned. Otherwise,
-+ * the child is acquired and a new reference is returned.
-+ *
-+ * If you're done with the child, you need to release it and drop your
-+ * reference.
-+ *
-+ * This function does not acquire the parent node. However, if the parent was
-+ * already deactivated, then kdbus_node_deactivate() will, at some point, also
-+ * deactivate the child. Therefore, we can rely on the explicit ordering during
-+ * deactivation.
-+ *
-+ * Return: Reference to acquired child node, or NULL if not found / not active.
-+ */
-+struct kdbus_node *kdbus_node_find_child(struct kdbus_node *node,
-+ const char *name)
-+{
-+ struct kdbus_node *child;
-+ struct rb_node *rb;
-+ unsigned int hash;
-+ int ret;
-+
-+ hash = kdbus_node_name_hash(name);
-+
-+ mutex_lock(&node->lock);
-+ rb = node->children.rb_node;
-+ while (rb) {
-+ child = kdbus_node_from_rb(rb);
-+ ret = kdbus_node_name_compare(hash, name, child);
-+ if (ret < 0)
-+ rb = rb->rb_left;
-+ else if (ret > 0)
-+ rb = rb->rb_right;
-+ else
-+ break;
-+ }
-+ if (rb && kdbus_node_acquire(child))
-+ kdbus_node_ref(child);
-+ else
-+ child = NULL;
-+ mutex_unlock(&node->lock);
-+
-+ return child;
-+}
-+
-+static struct kdbus_node *node_find_closest_unlocked(struct kdbus_node *node,
-+ unsigned int hash,
-+ const char *name)
-+{
-+ struct kdbus_node *n, *pos = NULL;
-+ struct rb_node *rb;
-+ int res;
-+
-+ /*
-+ * Find the closest child with ``node->hash >= hash'', or, if @name is
-+ * valid, ``node->name >= name'' (where '>=' is the lex. order).
-+ */
-+
-+ rb = node->children.rb_node;
-+ while (rb) {
-+ n = kdbus_node_from_rb(rb);
-+
-+ if (name)
-+ res = kdbus_node_name_compare(hash, name, n);
-+ else
-+ res = hash - n->hash;
-+
-+ if (res <= 0) {
-+ rb = rb->rb_left;
-+ pos = n;
-+ } else { /* ``hash > n->hash'', ``name > n->name'' */
-+ rb = rb->rb_right;
-+ }
-+ }
-+
-+ return pos;
-+}
-+
-+/**
-+ * kdbus_node_find_closest() - Find closest child-match
-+ * @node: parent node to search through
-+ * @hash: hash value to find closest match for
-+ *
-+ * Find the closest child of @node with a hash greater than or equal to @hash.
-+ * The closest match is the left-most child of @node with this property. Which
-+ * means, it is the first child with that hash returned by
-+ * kdbus_node_next_child(), if you'd iterate the whole parent node.
-+ *
-+ * Return: Reference to acquired child, or NULL if none found.
-+ */
-+struct kdbus_node *kdbus_node_find_closest(struct kdbus_node *node,
-+ unsigned int hash)
-+{
-+ struct kdbus_node *child;
-+ struct rb_node *rb;
-+
-+ mutex_lock(&node->lock);
-+
-+ child = node_find_closest_unlocked(node, hash, NULL);
-+ while (child && !kdbus_node_acquire(child)) {
-+ rb = rb_next(&child->rb);
-+ if (rb)
-+ child = kdbus_node_from_rb(rb);
-+ else
-+ child = NULL;
-+ }
-+ kdbus_node_ref(child);
-+
-+ mutex_unlock(&node->lock);
-+
-+ return child;
-+}
-+
-+/**
-+ * kdbus_node_next_child() - Acquire next child
-+ * @node: parent node
-+ * @prev: previous child-node position or NULL
-+ *
-+ * This function returns a reference to the next active child of @node, after
-+ * the passed position @prev. If @prev is NULL, a reference to the first active
-+ * child is returned. If no more active children are found, NULL is returned.
-+ *
-+ * This function acquires the next child it returns. If you're done with the
-+ * returned pointer, you need to release _and_ unref it.
-+ *
-+ * The passed in pointer @prev is not modified by this function, and it does
-+ * *not* have to be active. If @prev was acquired via different means, or if it
-+ * was unlinked from its parent before you pass it in, then this iterator will
-+ * still return the next active child (it will have to search through the
-+ * rb-tree based on the node-name, though).
-+ * However, @prev must not be linked to a different parent than @node!
-+ *
-+ * Return: Reference to next acquired child, or NULL if at the end.
-+ */
-+struct kdbus_node *kdbus_node_next_child(struct kdbus_node *node,
-+ struct kdbus_node *prev)
-+{
-+ struct kdbus_node *pos = NULL;
-+ struct rb_node *rb;
-+
-+ mutex_lock(&node->lock);
-+
-+ if (!prev) {
-+ /*
-+ * New iteration; find first node in rb-tree and try to acquire
-+ * it. If we got it, directly return it as first element.
-+ * Otherwise, the loop below will find the next active node.
-+ */
-+ rb = rb_first(&node->children);
-+ if (!rb)
-+ goto exit;
-+ pos = kdbus_node_from_rb(rb);
-+ if (kdbus_node_acquire(pos))
-+ goto exit;
-+ } else if (RB_EMPTY_NODE(&prev->rb)) {
-+ /*
-+ * The current iterator is no longer linked to the rb-tree. Use
-+ * its hash value and name to find the next _higher_ node and
-+ * acquire it. If we got it, return it as next element.
-+ * Otherwise, the loop below will find the next active node.
-+ */
-+ pos = node_find_closest_unlocked(node, prev->hash, prev->name);
-+ if (!pos)
-+ goto exit;
-+ if (kdbus_node_acquire(pos))
-+ goto exit;
-+ } else {
-+ /*
-+ * The current iterator is still linked to the parent. Set it
-+ * as current position and use the loop below to find the next
-+ * active element.
-+ */
-+ pos = prev;
-+ }
-+
-+ /* @pos was already returned or is inactive; find next active node */
-+ do {
-+ rb = rb_next(&pos->rb);
-+ if (rb)
-+ pos = kdbus_node_from_rb(rb);
-+ else
-+ pos = NULL;
-+ } while (pos && !kdbus_node_acquire(pos));
-+
-+exit:
-+ /* @pos is NULL or acquired. Take ref if non-NULL and return it */
-+ kdbus_node_ref(pos);
-+ mutex_unlock(&node->lock);
-+ return pos;
-+}
-diff --git a/ipc/kdbus/node.h b/ipc/kdbus/node.h
-new file mode 100644
-index 0000000..970e02b
---- /dev/null
-+++ b/ipc/kdbus/node.h
-@@ -0,0 +1,86 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_NODE_H
-+#define __KDBUS_NODE_H
-+
-+#include <linux/atomic.h>
-+#include <linux/kernel.h>
-+#include <linux/mutex.h>
-+#include <linux/wait.h>
-+
-+struct kdbus_node;
-+
-+enum kdbus_node_type {
-+ KDBUS_NODE_DOMAIN,
-+ KDBUS_NODE_CONTROL,
-+ KDBUS_NODE_BUS,
-+ KDBUS_NODE_ENDPOINT,
-+};
-+
-+typedef void (*kdbus_node_free_t) (struct kdbus_node *node);
-+typedef void (*kdbus_node_release_t) (struct kdbus_node *node, bool was_active);
-+
-+struct kdbus_node {
-+ atomic_t refcnt;
-+ atomic_t active;
-+ wait_queue_head_t waitq;
-+
-+ /* static members */
-+ unsigned int type;
-+ kdbus_node_free_t free_cb;
-+ kdbus_node_release_t release_cb;
-+ umode_t mode;
-+ kuid_t uid;
-+ kgid_t gid;
-+
-+ /* valid once linked */
-+ char *name;
-+ unsigned int hash;
-+ unsigned int id;
-+ struct kdbus_node *parent; /* may be NULL */
-+
-+ /* valid iff active */
-+ struct mutex lock;
-+ struct rb_node rb;
-+ struct rb_root children;
-+};
-+
-+#define kdbus_node_from_rb(_node) rb_entry((_node), struct kdbus_node, rb)
-+
-+extern struct ida kdbus_node_ida;
-+
-+void kdbus_node_init(struct kdbus_node *node, unsigned int type);
-+
-+int kdbus_node_link(struct kdbus_node *node, struct kdbus_node *parent,
-+ const char *name);
-+
-+struct kdbus_node *kdbus_node_ref(struct kdbus_node *node);
-+struct kdbus_node *kdbus_node_unref(struct kdbus_node *node);
-+
-+bool kdbus_node_is_active(struct kdbus_node *node);
-+bool kdbus_node_is_deactivated(struct kdbus_node *node);
-+bool kdbus_node_activate(struct kdbus_node *node);
-+void kdbus_node_deactivate(struct kdbus_node *node);
-+
-+bool kdbus_node_acquire(struct kdbus_node *node);
-+void kdbus_node_release(struct kdbus_node *node);
-+
-+struct kdbus_node *kdbus_node_find_child(struct kdbus_node *node,
-+ const char *name);
-+struct kdbus_node *kdbus_node_find_closest(struct kdbus_node *node,
-+ unsigned int hash);
-+struct kdbus_node *kdbus_node_next_child(struct kdbus_node *node,
-+ struct kdbus_node *prev);
-+
-+#endif
-diff --git a/ipc/kdbus/notify.c b/ipc/kdbus/notify.c
-new file mode 100644
-index 0000000..375758c
---- /dev/null
-+++ b/ipc/kdbus/notify.c
-@@ -0,0 +1,204 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/fs.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/spinlock.h>
-+#include <linux/sched.h>
-+#include <linux/slab.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "domain.h"
-+#include "endpoint.h"
-+#include "item.h"
-+#include "message.h"
-+#include "notify.h"
-+
-+static inline void kdbus_notify_add_tail(struct kdbus_staging *staging,
-+ struct kdbus_bus *bus)
-+{
-+ spin_lock(&bus->notify_lock);
-+ list_add_tail(&staging->notify_entry, &bus->notify_list);
-+ spin_unlock(&bus->notify_lock);
-+}
-+
-+static int kdbus_notify_reply(struct kdbus_bus *bus, u64 id,
-+ u64 cookie, u64 msg_type)
-+{
-+ struct kdbus_staging *s;
-+
-+ s = kdbus_staging_new_kernel(bus, id, cookie, 0, msg_type);
-+ if (IS_ERR(s))
-+ return PTR_ERR(s);
-+
-+ kdbus_notify_add_tail(s, bus);
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_notify_reply_timeout() - queue a timeout reply
-+ * @bus: Bus which queues the messages
-+ * @id: The destination's connection ID
-+ * @cookie: The cookie to set in the reply.
-+ *
-+ * Queues a message that has a KDBUS_ITEM_REPLY_TIMEOUT item attached.
-+ *
-+ * Return: 0 on success, negative errno on failure.
-+ */
-+int kdbus_notify_reply_timeout(struct kdbus_bus *bus, u64 id, u64 cookie)
-+{
-+ return kdbus_notify_reply(bus, id, cookie, KDBUS_ITEM_REPLY_TIMEOUT);
-+}
-+
-+/**
-+ * kdbus_notify_reply_dead() - queue a 'dead' reply
-+ * @bus: Bus which queues the messages
-+ * @id: The destination's connection ID
-+ * @cookie: The cookie to set in the reply.
-+ *
-+ * Queues a message that has a KDBUS_ITEM_REPLY_DEAD item attached.
-+ *
-+ * Return: 0 on success, negative errno on failure.
-+ */
-+int kdbus_notify_reply_dead(struct kdbus_bus *bus, u64 id, u64 cookie)
-+{
-+ return kdbus_notify_reply(bus, id, cookie, KDBUS_ITEM_REPLY_DEAD);
-+}
-+
-+/**
-+ * kdbus_notify_name_change() - queue a notification about a name owner change
-+ * @bus: Bus which queues the messages
-+ * @type: The type if the notification; KDBUS_ITEM_NAME_ADD,
-+ * KDBUS_ITEM_NAME_CHANGE or KDBUS_ITEM_NAME_REMOVE
-+ * @old_id: The id of the connection that used to own the name
-+ * @new_id: The id of the new owner connection
-+ * @old_flags: The flags to pass in the KDBUS_ITEM flags field for
-+ * the old owner
-+ * @new_flags: The flags to pass in the KDBUS_ITEM flags field for
-+ * the new owner
-+ * @name: The name that was removed or assigned to a new owner
-+ *
-+ * Return: 0 on success, negative errno on failure.
-+ */
-+int kdbus_notify_name_change(struct kdbus_bus *bus, u64 type,
-+ u64 old_id, u64 new_id,
-+ u64 old_flags, u64 new_flags,
-+ const char *name)
-+{
-+ size_t name_len, extra_size;
-+ struct kdbus_staging *s;
-+
-+ name_len = strlen(name) + 1;
-+ extra_size = sizeof(struct kdbus_notify_name_change) + name_len;
-+
-+ s = kdbus_staging_new_kernel(bus, KDBUS_DST_ID_BROADCAST, 0,
-+ extra_size, type);
-+ if (IS_ERR(s))
-+ return PTR_ERR(s);
-+
-+ s->notify->name_change.old_id.id = old_id;
-+ s->notify->name_change.old_id.flags = old_flags;
-+ s->notify->name_change.new_id.id = new_id;
-+ s->notify->name_change.new_id.flags = new_flags;
-+ memcpy(s->notify->name_change.name, name, name_len);
-+
-+ kdbus_notify_add_tail(s, bus);
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_notify_id_change() - queue a notification about a unique ID change
-+ * @bus: Bus which queues the messages
-+ * @type: The type if the notification; KDBUS_ITEM_ID_ADD or
-+ * KDBUS_ITEM_ID_REMOVE
-+ * @id: The id of the connection that was added or removed
-+ * @flags: The flags to pass in the KDBUS_ITEM flags field
-+ *
-+ * Return: 0 on success, negative errno on failure.
-+ */
-+int kdbus_notify_id_change(struct kdbus_bus *bus, u64 type, u64 id, u64 flags)
-+{
-+ struct kdbus_staging *s;
-+ size_t extra_size;
-+
-+ extra_size = sizeof(struct kdbus_notify_id_change);
-+ s = kdbus_staging_new_kernel(bus, KDBUS_DST_ID_BROADCAST, 0,
-+ extra_size, type);
-+ if (IS_ERR(s))
-+ return PTR_ERR(s);
-+
-+ s->notify->id_change.id = id;
-+ s->notify->id_change.flags = flags;
-+
-+ kdbus_notify_add_tail(s, bus);
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_notify_flush() - send a list of collected messages
-+ * @bus: Bus which queues the messages
-+ *
-+ * The list is empty after sending the messages.
-+ */
-+void kdbus_notify_flush(struct kdbus_bus *bus)
-+{
-+ LIST_HEAD(notify_list);
-+ struct kdbus_staging *s, *tmp;
-+
-+ mutex_lock(&bus->notify_flush_lock);
-+ down_read(&bus->name_registry->rwlock);
-+
-+ spin_lock(&bus->notify_lock);
-+ list_splice_init(&bus->notify_list, ¬ify_list);
-+ spin_unlock(&bus->notify_lock);
-+
-+ list_for_each_entry_safe(s, tmp, ¬ify_list, notify_entry) {
-+ if (s->msg->dst_id != KDBUS_DST_ID_BROADCAST) {
-+ struct kdbus_conn *conn;
-+
-+ conn = kdbus_bus_find_conn_by_id(bus, s->msg->dst_id);
-+ if (conn) {
-+ kdbus_bus_eavesdrop(bus, NULL, s);
-+ kdbus_conn_entry_insert(NULL, conn, s, NULL,
-+ NULL);
-+ kdbus_conn_unref(conn);
-+ }
-+ } else {
-+ kdbus_bus_broadcast(bus, NULL, s);
-+ }
-+
-+ list_del(&s->notify_entry);
-+ kdbus_staging_free(s);
-+ }
-+
-+ up_read(&bus->name_registry->rwlock);
-+ mutex_unlock(&bus->notify_flush_lock);
-+}
-+
-+/**
-+ * kdbus_notify_free() - free a list of collected messages
-+ * @bus: Bus which queues the messages
-+ */
-+void kdbus_notify_free(struct kdbus_bus *bus)
-+{
-+ struct kdbus_staging *s, *tmp;
-+
-+ list_for_each_entry_safe(s, tmp, &bus->notify_list, notify_entry) {
-+ list_del(&s->notify_entry);
-+ kdbus_staging_free(s);
-+ }
-+}
-diff --git a/ipc/kdbus/notify.h b/ipc/kdbus/notify.h
-new file mode 100644
-index 0000000..03df464
---- /dev/null
-+++ b/ipc/kdbus/notify.h
-@@ -0,0 +1,30 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_NOTIFY_H
-+#define __KDBUS_NOTIFY_H
-+
-+struct kdbus_bus;
-+
-+int kdbus_notify_id_change(struct kdbus_bus *bus, u64 type, u64 id, u64 flags);
-+int kdbus_notify_reply_timeout(struct kdbus_bus *bus, u64 id, u64 cookie);
-+int kdbus_notify_reply_dead(struct kdbus_bus *bus, u64 id, u64 cookie);
-+int kdbus_notify_name_change(struct kdbus_bus *bus, u64 type,
-+ u64 old_id, u64 new_id,
-+ u64 old_flags, u64 new_flags,
-+ const char *name);
-+void kdbus_notify_flush(struct kdbus_bus *bus);
-+void kdbus_notify_free(struct kdbus_bus *bus);
-+
-+#endif
-diff --git a/ipc/kdbus/policy.c b/ipc/kdbus/policy.c
-new file mode 100644
-index 0000000..f2618e15
---- /dev/null
-+++ b/ipc/kdbus/policy.c
-@@ -0,0 +1,489 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/dcache.h>
-+#include <linux/fs.h>
-+#include <linux/init.h>
-+#include <linux/mutex.h>
-+#include <linux/sched.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "domain.h"
-+#include "item.h"
-+#include "names.h"
-+#include "policy.h"
-+
-+#define KDBUS_POLICY_HASH_SIZE 64
-+
-+/**
-+ * struct kdbus_policy_db_entry_access - a database entry access item
-+ * @type: One of KDBUS_POLICY_ACCESS_* types
-+ * @access: Access to grant. One of KDBUS_POLICY_*
-+ * @uid: For KDBUS_POLICY_ACCESS_USER, the global uid
-+ * @gid: For KDBUS_POLICY_ACCESS_GROUP, the global gid
-+ * @list: List entry item for the entry's list
-+ *
-+ * This is the internal version of struct kdbus_policy_db_access.
-+ */
-+struct kdbus_policy_db_entry_access {
-+ u8 type; /* USER, GROUP, WORLD */
-+ u8 access; /* OWN, TALK, SEE */
-+ union {
-+ kuid_t uid; /* global uid */
-+ kgid_t gid; /* global gid */
-+ };
-+ struct list_head list;
-+};
-+
-+/**
-+ * struct kdbus_policy_db_entry - a policy database entry
-+ * @name: The name to match the policy entry against
-+ * @hentry: The hash entry for the database's entries_hash
-+ * @access_list: List head for keeping tracks of the entry's
-+ * access items.
-+ * @owner: The owner of this entry. Can be a kdbus_conn or
-+ * a kdbus_ep object.
-+ * @wildcard: The name is a wildcard, such as ending on '.*'
-+ */
-+struct kdbus_policy_db_entry {
-+ char *name;
-+ struct hlist_node hentry;
-+ struct list_head access_list;
-+ const void *owner;
-+ bool wildcard:1;
-+};
-+
-+static void kdbus_policy_entry_free(struct kdbus_policy_db_entry *e)
-+{
-+ struct kdbus_policy_db_entry_access *a, *tmp;
-+
-+ list_for_each_entry_safe(a, tmp, &e->access_list, list) {
-+ list_del(&a->list);
-+ kfree(a);
-+ }
-+
-+ kfree(e->name);
-+ kfree(e);
-+}
-+
-+static unsigned int kdbus_strnhash(const char *str, size_t len)
-+{
-+ unsigned long hash = init_name_hash();
-+
-+ while (len--)
-+ hash = partial_name_hash(*str++, hash);
-+
-+ return end_name_hash(hash);
-+}
-+
-+static const struct kdbus_policy_db_entry *
-+kdbus_policy_lookup(struct kdbus_policy_db *db, const char *name, u32 hash)
-+{
-+ struct kdbus_policy_db_entry *e;
-+ const char *dot;
-+ size_t len;
-+
-+ /* find exact match */
-+ hash_for_each_possible(db->entries_hash, e, hentry, hash)
-+ if (strcmp(e->name, name) == 0 && !e->wildcard)
-+ return e;
-+
-+ /* find wildcard match */
-+
-+ dot = strrchr(name, '.');
-+ if (!dot)
-+ return NULL;
-+
-+ len = dot - name;
-+ hash = kdbus_strnhash(name, len);
-+
-+ hash_for_each_possible(db->entries_hash, e, hentry, hash)
-+ if (e->wildcard && !strncmp(e->name, name, len) &&
-+ !e->name[len])
-+ return e;
-+
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_policy_db_clear - release all memory from a policy db
-+ * @db: The policy database
-+ */
-+void kdbus_policy_db_clear(struct kdbus_policy_db *db)
-+{
-+ struct kdbus_policy_db_entry *e;
-+ struct hlist_node *tmp;
-+ unsigned int i;
-+
-+ /* purge entries */
-+ down_write(&db->entries_rwlock);
-+ hash_for_each_safe(db->entries_hash, i, tmp, e, hentry) {
-+ hash_del(&e->hentry);
-+ kdbus_policy_entry_free(e);
-+ }
-+ up_write(&db->entries_rwlock);
-+}
-+
-+/**
-+ * kdbus_policy_db_init() - initialize a new policy database
-+ * @db: The location of the database
-+ *
-+ * This initializes a new policy-db. The underlying memory must have been
-+ * cleared to zero by the caller.
-+ */
-+void kdbus_policy_db_init(struct kdbus_policy_db *db)
-+{
-+ hash_init(db->entries_hash);
-+ init_rwsem(&db->entries_rwlock);
-+}
-+
-+/**
-+ * kdbus_policy_query_unlocked() - Query the policy database
-+ * @db: Policy database
-+ * @cred: Credentials to test against
-+ * @name: Name to query
-+ * @hash: Hash value of @name
-+ *
-+ * Same as kdbus_policy_query() but requires the caller to lock the policy
-+ * database against concurrent writes.
-+ *
-+ * Return: The highest KDBUS_POLICY_* access type found, or -EPERM if none.
-+ */
-+int kdbus_policy_query_unlocked(struct kdbus_policy_db *db,
-+ const struct cred *cred, const char *name,
-+ unsigned int hash)
-+{
-+ struct kdbus_policy_db_entry_access *a;
-+ const struct kdbus_policy_db_entry *e;
-+ int i, highest = -EPERM;
-+
-+ e = kdbus_policy_lookup(db, name, hash);
-+ if (!e)
-+ return -EPERM;
-+
-+ list_for_each_entry(a, &e->access_list, list) {
-+ if ((int)a->access <= highest)
-+ continue;
-+
-+ switch (a->type) {
-+ case KDBUS_POLICY_ACCESS_USER:
-+ if (uid_eq(cred->euid, a->uid))
-+ highest = a->access;
-+ break;
-+ case KDBUS_POLICY_ACCESS_GROUP:
-+ if (gid_eq(cred->egid, a->gid)) {
-+ highest = a->access;
-+ break;
-+ }
-+
-+ for (i = 0; i < cred->group_info->ngroups; i++) {
-+ kgid_t gid = GROUP_AT(cred->group_info, i);
-+
-+ if (gid_eq(gid, a->gid)) {
-+ highest = a->access;
-+ break;
-+ }
-+ }
-+
-+ break;
-+ case KDBUS_POLICY_ACCESS_WORLD:
-+ highest = a->access;
-+ break;
-+ }
-+
-+ /* OWN is the highest possible policy */
-+ if (highest >= KDBUS_POLICY_OWN)
-+ break;
-+ }
-+
-+ return highest;
-+}
-+
-+/**
-+ * kdbus_policy_query() - Query the policy database
-+ * @db: Policy database
-+ * @cred: Credentials to test against
-+ * @name: Name to query
-+ * @hash: Hash value of @name
-+ *
-+ * Query the policy database @db for the access rights of @cred to the name
-+ * @name. The access rights of @cred are returned, or -EPERM if no access is
-+ * granted.
-+ *
-+ * This call effectively searches for the highest access-right granted to
-+ * @cred. The caller should really cache those as policy lookups are rather
-+ * expensive.
-+ *
-+ * Return: The highest KDBUS_POLICY_* access type found, or -EPERM if none.
-+ */
-+int kdbus_policy_query(struct kdbus_policy_db *db, const struct cred *cred,
-+ const char *name, unsigned int hash)
-+{
-+ int ret;
-+
-+ down_read(&db->entries_rwlock);
-+ ret = kdbus_policy_query_unlocked(db, cred, name, hash);
-+ up_read(&db->entries_rwlock);
-+
-+ return ret;
-+}
-+
-+static void __kdbus_policy_remove_owner(struct kdbus_policy_db *db,
-+ const void *owner)
-+{
-+ struct kdbus_policy_db_entry *e;
-+ struct hlist_node *tmp;
-+ int i;
-+
-+ hash_for_each_safe(db->entries_hash, i, tmp, e, hentry)
-+ if (e->owner == owner) {
-+ hash_del(&e->hentry);
-+ kdbus_policy_entry_free(e);
-+ }
-+}
-+
-+/**
-+ * kdbus_policy_remove_owner() - remove all entries related to a connection
-+ * @db: The policy database
-+ * @owner: The connection which items to remove
-+ */
-+void kdbus_policy_remove_owner(struct kdbus_policy_db *db,
-+ const void *owner)
-+{
-+ down_write(&db->entries_rwlock);
-+ __kdbus_policy_remove_owner(db, owner);
-+ up_write(&db->entries_rwlock);
-+}
-+
-+/*
-+ * Convert user provided policy access to internal kdbus policy
-+ * access
-+ */
-+static struct kdbus_policy_db_entry_access *
-+kdbus_policy_make_access(const struct kdbus_policy_access *uaccess)
-+{
-+ int ret;
-+ struct kdbus_policy_db_entry_access *a;
-+
-+ a = kzalloc(sizeof(*a), GFP_KERNEL);
-+ if (!a)
-+ return ERR_PTR(-ENOMEM);
-+
-+ ret = -EINVAL;
-+ switch (uaccess->access) {
-+ case KDBUS_POLICY_SEE:
-+ case KDBUS_POLICY_TALK:
-+ case KDBUS_POLICY_OWN:
-+ a->access = uaccess->access;
-+ break;
-+ default:
-+ goto err;
-+ }
-+
-+ switch (uaccess->type) {
-+ case KDBUS_POLICY_ACCESS_USER:
-+ a->uid = make_kuid(current_user_ns(), uaccess->id);
-+ if (!uid_valid(a->uid))
-+ goto err;
-+
-+ break;
-+ case KDBUS_POLICY_ACCESS_GROUP:
-+ a->gid = make_kgid(current_user_ns(), uaccess->id);
-+ if (!gid_valid(a->gid))
-+ goto err;
-+
-+ break;
-+ case KDBUS_POLICY_ACCESS_WORLD:
-+ break;
-+ default:
-+ goto err;
-+ }
-+
-+ a->type = uaccess->type;
-+
-+ return a;
-+
-+err:
-+ kfree(a);
-+ return ERR_PTR(ret);
-+}
-+
-+/**
-+ * kdbus_policy_set() - set a connection's policy rules
-+ * @db: The policy database
-+ * @items: A list of kdbus_item elements that contain both
-+ * names and access rules to set.
-+ * @items_size: The total size of the items.
-+ * @max_policies: The maximum number of policy entries to allow.
-+ * Pass 0 for no limit.
-+ * @allow_wildcards: Boolean value whether wildcard entries (such
-+ * ending on '.*') should be allowed.
-+ * @owner: The owner of the new policy items.
-+ *
-+ * This function sets a new set of policies for a given owner. The names and
-+ * access rules are gathered by walking the list of items passed in as
-+ * argument. An item of type KDBUS_ITEM_NAME is expected before any number of
-+ * KDBUS_ITEM_POLICY_ACCESS items. If there are more repetitions of this
-+ * pattern than denoted in @max_policies, -EINVAL is returned.
-+ *
-+ * In order to allow atomic replacement of rules, the function first removes
-+ * all entries that have been created for the given owner previously.
-+ *
-+ * Callers to this function must make sure that the owner is a custom
-+ * endpoint, or if the endpoint is a default endpoint, then it must be
-+ * either a policy holder or an activator.
-+ *
-+ * Return: 0 on success, negative errno on failure.
-+ */
-+int kdbus_policy_set(struct kdbus_policy_db *db,
-+ const struct kdbus_item *items,
-+ size_t items_size,
-+ size_t max_policies,
-+ bool allow_wildcards,
-+ const void *owner)
-+{
-+ struct kdbus_policy_db_entry_access *a;
-+ struct kdbus_policy_db_entry *e, *p;
-+ const struct kdbus_item *item;
-+ struct hlist_node *tmp;
-+ HLIST_HEAD(entries);
-+ HLIST_HEAD(restore);
-+ size_t count = 0;
-+ int i, ret = 0;
-+ u32 hash;
-+
-+ /* Walk the list of items and look for new policies */
-+ e = NULL;
-+ KDBUS_ITEMS_FOREACH(item, items, items_size) {
-+ switch (item->type) {
-+ case KDBUS_ITEM_NAME: {
-+ size_t len;
-+
-+ if (max_policies && ++count > max_policies) {
-+ ret = -E2BIG;
-+ goto exit;
-+ }
-+
-+ if (!kdbus_name_is_valid(item->str, true)) {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
-+
-+ e = kzalloc(sizeof(*e), GFP_KERNEL);
-+ if (!e) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ INIT_LIST_HEAD(&e->access_list);
-+ e->owner = owner;
-+ hlist_add_head(&e->hentry, &entries);
-+
-+ e->name = kstrdup(item->str, GFP_KERNEL);
-+ if (!e->name) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ /*
-+ * If a supplied name ends with an '.*', cut off that
-+ * part, only store anything before it, and mark the
-+ * entry as wildcard.
-+ */
-+ len = strlen(e->name);
-+ if (len > 2 &&
-+ e->name[len - 3] == '.' &&
-+ e->name[len - 2] == '*') {
-+ if (!allow_wildcards) {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
-+
-+ e->name[len - 3] = '\0';
-+ e->wildcard = true;
-+ }
-+
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_POLICY_ACCESS:
-+ if (!e) {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
-+
-+ a = kdbus_policy_make_access(&item->policy_access);
-+ if (IS_ERR(a)) {
-+ ret = PTR_ERR(a);
-+ goto exit;
-+ }
-+
-+ list_add_tail(&a->list, &e->access_list);
-+ break;
-+ }
-+ }
-+
-+ down_write(&db->entries_rwlock);
-+
-+ /* remember previous entries to restore in case of failure */
-+ hash_for_each_safe(db->entries_hash, i, tmp, e, hentry)
-+ if (e->owner == owner) {
-+ hash_del(&e->hentry);
-+ hlist_add_head(&e->hentry, &restore);
-+ }
-+
-+ hlist_for_each_entry_safe(e, tmp, &entries, hentry) {
-+ /* prevent duplicates */
-+ hash = kdbus_strhash(e->name);
-+ hash_for_each_possible(db->entries_hash, p, hentry, hash)
-+ if (strcmp(e->name, p->name) == 0 &&
-+ e->wildcard == p->wildcard) {
-+ ret = -EEXIST;
-+ goto restore;
-+ }
-+
-+ hlist_del(&e->hentry);
-+ hash_add(db->entries_hash, &e->hentry, hash);
-+ }
-+
-+restore:
-+ /* if we failed, flush all entries we added so far */
-+ if (ret < 0)
-+ __kdbus_policy_remove_owner(db, owner);
-+
-+ /* if we failed, restore entries, otherwise release them */
-+ hlist_for_each_entry_safe(e, tmp, &restore, hentry) {
-+ hlist_del(&e->hentry);
-+ if (ret < 0) {
-+ hash = kdbus_strhash(e->name);
-+ hash_add(db->entries_hash, &e->hentry, hash);
-+ } else {
-+ kdbus_policy_entry_free(e);
-+ }
-+ }
-+
-+ up_write(&db->entries_rwlock);
-+
-+exit:
-+ hlist_for_each_entry_safe(e, tmp, &entries, hentry) {
-+ hlist_del(&e->hentry);
-+ kdbus_policy_entry_free(e);
-+ }
-+
-+ return ret;
-+}
-diff --git a/ipc/kdbus/policy.h b/ipc/kdbus/policy.h
-new file mode 100644
-index 0000000..15dd7bc
---- /dev/null
-+++ b/ipc/kdbus/policy.h
-@@ -0,0 +1,51 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_POLICY_H
-+#define __KDBUS_POLICY_H
-+
-+#include <linux/hashtable.h>
-+#include <linux/rwsem.h>
-+
-+struct kdbus_conn;
-+struct kdbus_item;
-+
-+/**
-+ * struct kdbus_policy_db - policy database
-+ * @entries_hash: Hashtable of entries
-+ * @entries_rwlock: Mutex to protect the database's access entries
-+ */
-+struct kdbus_policy_db {
-+ DECLARE_HASHTABLE(entries_hash, 6);
-+ struct rw_semaphore entries_rwlock;
-+};
-+
-+void kdbus_policy_db_init(struct kdbus_policy_db *db);
-+void kdbus_policy_db_clear(struct kdbus_policy_db *db);
-+
-+int kdbus_policy_query_unlocked(struct kdbus_policy_db *db,
-+ const struct cred *cred, const char *name,
-+ unsigned int hash);
-+int kdbus_policy_query(struct kdbus_policy_db *db, const struct cred *cred,
-+ const char *name, unsigned int hash);
-+
-+void kdbus_policy_remove_owner(struct kdbus_policy_db *db,
-+ const void *owner);
-+int kdbus_policy_set(struct kdbus_policy_db *db,
-+ const struct kdbus_item *items,
-+ size_t items_size,
-+ size_t max_policies,
-+ bool allow_wildcards,
-+ const void *owner);
-+
-+#endif
-diff --git a/ipc/kdbus/pool.c b/ipc/kdbus/pool.c
-new file mode 100644
-index 0000000..63ccd55
---- /dev/null
-+++ b/ipc/kdbus/pool.c
-@@ -0,0 +1,728 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/aio.h>
-+#include <linux/file.h>
-+#include <linux/fs.h>
-+#include <linux/highmem.h>
-+#include <linux/init.h>
-+#include <linux/mm.h>
-+#include <linux/module.h>
-+#include <linux/pagemap.h>
-+#include <linux/rbtree.h>
-+#include <linux/sched.h>
-+#include <linux/shmem_fs.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/uaccess.h>
-+#include <linux/uio.h>
-+
-+#include "pool.h"
-+#include "util.h"
-+
-+/**
-+ * struct kdbus_pool - the receiver's buffer
-+ * @f: The backing shmem file
-+ * @size: The size of the file
-+ * @accounted_size: Currently accounted memory in bytes
-+ * @lock: Pool data lock
-+ * @slices: All slices sorted by address
-+ * @slices_busy: Tree of allocated slices
-+ * @slices_free: Tree of free slices
-+ *
-+ * The receiver's buffer, managed as a pool of allocated and free
-+ * slices containing the queued messages.
-+ *
-+ * Messages sent with KDBUS_CMD_SEND are copied directly by the
-+ * sending process into the receiver's pool.
-+ *
-+ * Messages received with KDBUS_CMD_RECV just return the offset
-+ * to the data placed in the pool.
-+ *
-+ * The internally allocated memory needs to be returned by the receiver
-+ * with KDBUS_CMD_FREE.
-+ */
-+struct kdbus_pool {
-+ struct file *f;
-+ size_t size;
-+ size_t accounted_size;
-+ struct mutex lock;
-+
-+ struct list_head slices;
-+ struct rb_root slices_busy;
-+ struct rb_root slices_free;
-+};
-+
-+/**
-+ * struct kdbus_pool_slice - allocated element in kdbus_pool
-+ * @pool: Pool this slice belongs to
-+ * @off: Offset of slice in the shmem file
-+ * @size: Size of slice
-+ * @entry: Entry in "all slices" list
-+ * @rb_node: Entry in free or busy list
-+ * @free: Unused slice
-+ * @accounted: Accounted as queue slice
-+ * @ref_kernel: Kernel holds a reference
-+ * @ref_user: Userspace holds a reference
-+ *
-+ * The pool has one or more slices, always spanning the entire size of the
-+ * pool.
-+ *
-+ * Every slice is an element in a list sorted by the buffer address, to
-+ * provide access to the next neighbor slice.
-+ *
-+ * Every slice is member in either the busy or the free tree. The free
-+ * tree is organized by slice size, the busy tree organized by buffer
-+ * offset.
-+ */
-+struct kdbus_pool_slice {
-+ struct kdbus_pool *pool;
-+ size_t off;
-+ size_t size;
-+
-+ struct list_head entry;
-+ struct rb_node rb_node;
-+
-+ bool free:1;
-+ bool accounted:1;
-+ bool ref_kernel:1;
-+ bool ref_user:1;
-+};
-+
-+static struct kdbus_pool_slice *kdbus_pool_slice_new(struct kdbus_pool *pool,
-+ size_t off, size_t size)
-+{
-+ struct kdbus_pool_slice *slice;
-+
-+ slice = kzalloc(sizeof(*slice), GFP_KERNEL);
-+ if (!slice)
-+ return NULL;
-+
-+ slice->pool = pool;
-+ slice->off = off;
-+ slice->size = size;
-+ slice->free = true;
-+ return slice;
-+}
-+
-+/* insert a slice into the free tree */
-+static void kdbus_pool_add_free_slice(struct kdbus_pool *pool,
-+ struct kdbus_pool_slice *slice)
-+{
-+ struct rb_node **n;
-+ struct rb_node *pn = NULL;
-+
-+ n = &pool->slices_free.rb_node;
-+ while (*n) {
-+ struct kdbus_pool_slice *pslice;
-+
-+ pn = *n;
-+ pslice = rb_entry(pn, struct kdbus_pool_slice, rb_node);
-+ if (slice->size < pslice->size)
-+ n = &pn->rb_left;
-+ else
-+ n = &pn->rb_right;
-+ }
-+
-+ rb_link_node(&slice->rb_node, pn, n);
-+ rb_insert_color(&slice->rb_node, &pool->slices_free);
-+}
-+
-+/* insert a slice into the busy tree */
-+static void kdbus_pool_add_busy_slice(struct kdbus_pool *pool,
-+ struct kdbus_pool_slice *slice)
-+{
-+ struct rb_node **n;
-+ struct rb_node *pn = NULL;
-+
-+ n = &pool->slices_busy.rb_node;
-+ while (*n) {
-+ struct kdbus_pool_slice *pslice;
-+
-+ pn = *n;
-+ pslice = rb_entry(pn, struct kdbus_pool_slice, rb_node);
-+ if (slice->off < pslice->off)
-+ n = &pn->rb_left;
-+ else if (slice->off > pslice->off)
-+ n = &pn->rb_right;
-+ else
-+ BUG();
-+ }
-+
-+ rb_link_node(&slice->rb_node, pn, n);
-+ rb_insert_color(&slice->rb_node, &pool->slices_busy);
-+}
-+
-+static struct kdbus_pool_slice *kdbus_pool_find_slice(struct kdbus_pool *pool,
-+ size_t off)
-+{
-+ struct rb_node *n;
-+
-+ n = pool->slices_busy.rb_node;
-+ while (n) {
-+ struct kdbus_pool_slice *s;
-+
-+ s = rb_entry(n, struct kdbus_pool_slice, rb_node);
-+ if (off < s->off)
-+ n = n->rb_left;
-+ else if (off > s->off)
-+ n = n->rb_right;
-+ else
-+ return s;
-+ }
-+
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_pool_slice_alloc() - allocate memory from a pool
-+ * @pool: The receiver's pool
-+ * @size: The number of bytes to allocate
-+ * @accounted: Whether this slice should be accounted for
-+ *
-+ * The returned slice is used for kdbus_pool_slice_release() to
-+ * free the allocated memory. If either @kvec or @iovec is non-NULL, the data
-+ * will be copied from kernel or userspace memory into the new slice at
-+ * offset 0.
-+ *
-+ * Return: the allocated slice on success, ERR_PTR on failure.
-+ */
-+struct kdbus_pool_slice *kdbus_pool_slice_alloc(struct kdbus_pool *pool,
-+ size_t size, bool accounted)
-+{
-+ size_t slice_size = KDBUS_ALIGN8(size);
-+ struct rb_node *n, *found = NULL;
-+ struct kdbus_pool_slice *s;
-+ int ret = 0;
-+
-+ if (WARN_ON(!size))
-+ return ERR_PTR(-EINVAL);
-+
-+ /* search a free slice with the closest matching size */
-+ mutex_lock(&pool->lock);
-+ n = pool->slices_free.rb_node;
-+ while (n) {
-+ s = rb_entry(n, struct kdbus_pool_slice, rb_node);
-+ if (slice_size < s->size) {
-+ found = n;
-+ n = n->rb_left;
-+ } else if (slice_size > s->size) {
-+ n = n->rb_right;
-+ } else {
-+ found = n;
-+ break;
-+ }
-+ }
-+
-+ /* no slice with the minimum size found in the pool */
-+ if (!found) {
-+ ret = -EXFULL;
-+ goto exit_unlock;
-+ }
-+
-+ /* no exact match, use the closest one */
-+ if (!n) {
-+ struct kdbus_pool_slice *s_new;
-+
-+ s = rb_entry(found, struct kdbus_pool_slice, rb_node);
-+
-+ /* split-off the remainder of the size to its own slice */
-+ s_new = kdbus_pool_slice_new(pool, s->off + slice_size,
-+ s->size - slice_size);
-+ if (!s_new) {
-+ ret = -ENOMEM;
-+ goto exit_unlock;
-+ }
-+
-+ list_add(&s_new->entry, &s->entry);
-+ kdbus_pool_add_free_slice(pool, s_new);
-+
-+ /* adjust our size now that we split-off another slice */
-+ s->size = slice_size;
-+ }
-+
-+ /* move slice from free to the busy tree */
-+ rb_erase(found, &pool->slices_free);
-+ kdbus_pool_add_busy_slice(pool, s);
-+
-+ WARN_ON(s->ref_kernel || s->ref_user);
-+
-+ s->ref_kernel = true;
-+ s->free = false;
-+ s->accounted = accounted;
-+ if (accounted)
-+ pool->accounted_size += s->size;
-+ mutex_unlock(&pool->lock);
-+
-+ return s;
-+
-+exit_unlock:
-+ mutex_unlock(&pool->lock);
-+ return ERR_PTR(ret);
-+}
-+
-+static void __kdbus_pool_slice_release(struct kdbus_pool_slice *slice)
-+{
-+ struct kdbus_pool *pool = slice->pool;
-+
-+ /* don't free the slice if either has a reference */
-+ if (slice->ref_kernel || slice->ref_user)
-+ return;
-+
-+ if (WARN_ON(slice->free))
-+ return;
-+
-+ rb_erase(&slice->rb_node, &pool->slices_busy);
-+
-+ /* merge with the next free slice */
-+ if (!list_is_last(&slice->entry, &pool->slices)) {
-+ struct kdbus_pool_slice *s;
-+
-+ s = list_entry(slice->entry.next,
-+ struct kdbus_pool_slice, entry);
-+ if (s->free) {
-+ rb_erase(&s->rb_node, &pool->slices_free);
-+ list_del(&s->entry);
-+ slice->size += s->size;
-+ kfree(s);
-+ }
-+ }
-+
-+ /* merge with previous free slice */
-+ if (pool->slices.next != &slice->entry) {
-+ struct kdbus_pool_slice *s;
-+
-+ s = list_entry(slice->entry.prev,
-+ struct kdbus_pool_slice, entry);
-+ if (s->free) {
-+ rb_erase(&s->rb_node, &pool->slices_free);
-+ list_del(&slice->entry);
-+ s->size += slice->size;
-+ kfree(slice);
-+ slice = s;
-+ }
-+ }
-+
-+ slice->free = true;
-+ kdbus_pool_add_free_slice(pool, slice);
-+}
-+
-+/**
-+ * kdbus_pool_slice_release() - drop kernel-reference on allocated slice
-+ * @slice: Slice allocated from the pool
-+ *
-+ * This releases the kernel-reference on the given slice. If the
-+ * kernel-reference and the user-reference on a slice are dropped, the slice is
-+ * returned to the pool.
-+ *
-+ * So far, we do not implement full ref-counting on slices. Each, kernel and
-+ * user-space can have exactly one reference to a slice. If both are dropped at
-+ * the same time, the slice is released.
-+ */
-+void kdbus_pool_slice_release(struct kdbus_pool_slice *slice)
-+{
-+ struct kdbus_pool *pool;
-+
-+ if (!slice)
-+ return;
-+
-+ /* @slice may be freed, so keep local ptr to @pool */
-+ pool = slice->pool;
-+
-+ mutex_lock(&pool->lock);
-+ /* kernel must own a ref to @slice to drop it */
-+ WARN_ON(!slice->ref_kernel);
-+ slice->ref_kernel = false;
-+ /* no longer kernel-owned, de-account slice */
-+ if (slice->accounted && !WARN_ON(pool->accounted_size < slice->size))
-+ pool->accounted_size -= slice->size;
-+ __kdbus_pool_slice_release(slice);
-+ mutex_unlock(&pool->lock);
-+}
-+
-+/**
-+ * kdbus_pool_release_offset() - release a public offset
-+ * @pool: pool to operate on
-+ * @off: offset to release
-+ *
-+ * This should be called whenever user-space frees a slice given to them. It
-+ * verifies the slice is available and public, and then drops it. It ensures
-+ * correct locking and barriers against queues.
-+ *
-+ * Return: 0 on success, ENXIO if the offset is invalid or not public.
-+ */
-+int kdbus_pool_release_offset(struct kdbus_pool *pool, size_t off)
-+{
-+ struct kdbus_pool_slice *slice;
-+ int ret = 0;
-+
-+ /* 'pool->size' is used as dummy offset for empty slices */
-+ if (off == pool->size)
-+ return 0;
-+
-+ mutex_lock(&pool->lock);
-+ slice = kdbus_pool_find_slice(pool, off);
-+ if (slice && slice->ref_user) {
-+ slice->ref_user = false;
-+ __kdbus_pool_slice_release(slice);
-+ } else {
-+ ret = -ENXIO;
-+ }
-+ mutex_unlock(&pool->lock);
-+
-+ return ret;
-+}
-+
-+/**
-+ * kdbus_pool_publish_empty() - publish empty slice to user-space
-+ * @pool: pool to operate on
-+ * @off: output storage for offset, or NULL
-+ * @size: output storage for size, or NULL
-+ *
-+ * This is the same as kdbus_pool_slice_publish(), but uses a dummy slice with
-+ * size 0. The returned offset points to the end of the pool and is never
-+ * returned on real slices.
-+ */
-+void kdbus_pool_publish_empty(struct kdbus_pool *pool, u64 *off, u64 *size)
-+{
-+ if (off)
-+ *off = pool->size;
-+ if (size)
-+ *size = 0;
-+}
-+
-+/**
-+ * kdbus_pool_slice_publish() - publish slice to user-space
-+ * @slice: The slice
-+ * @out_offset: Output storage for offset, or NULL
-+ * @out_size: Output storage for size, or NULL
-+ *
-+ * This prepares a slice to be published to user-space.
-+ *
-+ * This call combines the following operations:
-+ * * the memory region is flushed so the user's memory view is consistent
-+ * * the slice is marked as referenced by user-space, so user-space has to
-+ * call KDBUS_CMD_FREE to release it
-+ * * the offset and size of the slice are written to the given output
-+ * arguments, if non-NULL
-+ */
-+void kdbus_pool_slice_publish(struct kdbus_pool_slice *slice,
-+ u64 *out_offset, u64 *out_size)
-+{
-+ mutex_lock(&slice->pool->lock);
-+ /* kernel must own a ref to @slice to gain a user-space ref */
-+ WARN_ON(!slice->ref_kernel);
-+ slice->ref_user = true;
-+ mutex_unlock(&slice->pool->lock);
-+
-+ if (out_offset)
-+ *out_offset = slice->off;
-+ if (out_size)
-+ *out_size = slice->size;
-+}
-+
-+/**
-+ * kdbus_pool_slice_offset() - Get a slice's offset inside the pool
-+ * @slice: Slice to return the offset of
-+ *
-+ * Return: The internal offset @slice inside the pool.
-+ */
-+off_t kdbus_pool_slice_offset(const struct kdbus_pool_slice *slice)
-+{
-+ return slice->off;
-+}
-+
-+/**
-+ * kdbus_pool_slice_size() - get size of a pool slice
-+ * @slice: slice to query
-+ *
-+ * Return: size of the given slice
-+ */
-+size_t kdbus_pool_slice_size(const struct kdbus_pool_slice *slice)
-+{
-+ return slice->size;
-+}
-+
-+/**
-+ * kdbus_pool_new() - create a new pool
-+ * @name: Name of the (deleted) file which shows up in
-+ * /proc, used for debugging
-+ * @size: Maximum size of the pool
-+ *
-+ * Return: a new kdbus_pool on success, ERR_PTR on failure.
-+ */
-+struct kdbus_pool *kdbus_pool_new(const char *name, size_t size)
-+{
-+ struct kdbus_pool_slice *s;
-+ struct kdbus_pool *p;
-+ struct file *f;
-+ char *n = NULL;
-+ int ret;
-+
-+ p = kzalloc(sizeof(*p), GFP_KERNEL);
-+ if (!p)
-+ return ERR_PTR(-ENOMEM);
-+
-+ if (name) {
-+ n = kasprintf(GFP_KERNEL, KBUILD_MODNAME "-conn:%s", name);
-+ if (!n) {
-+ ret = -ENOMEM;
-+ goto exit_free;
-+ }
-+ }
-+
-+ f = shmem_file_setup(n ?: KBUILD_MODNAME "-conn", size, 0);
-+ kfree(n);
-+
-+ if (IS_ERR(f)) {
-+ ret = PTR_ERR(f);
-+ goto exit_free;
-+ }
-+
-+ ret = get_write_access(file_inode(f));
-+ if (ret < 0)
-+ goto exit_put_shmem;
-+
-+ /* allocate first slice spanning the entire pool */
-+ s = kdbus_pool_slice_new(p, 0, size);
-+ if (!s) {
-+ ret = -ENOMEM;
-+ goto exit_put_write;
-+ }
-+
-+ p->f = f;
-+ p->size = size;
-+ p->slices_free = RB_ROOT;
-+ p->slices_busy = RB_ROOT;
-+ mutex_init(&p->lock);
-+
-+ INIT_LIST_HEAD(&p->slices);
-+ list_add(&s->entry, &p->slices);
-+
-+ kdbus_pool_add_free_slice(p, s);
-+ return p;
-+
-+exit_put_write:
-+ put_write_access(file_inode(f));
-+exit_put_shmem:
-+ fput(f);
-+exit_free:
-+ kfree(p);
-+ return ERR_PTR(ret);
-+}
-+
-+/**
-+ * kdbus_pool_free() - destroy pool
-+ * @pool: The receiver's pool
-+ */
-+void kdbus_pool_free(struct kdbus_pool *pool)
-+{
-+ struct kdbus_pool_slice *s, *tmp;
-+
-+ if (!pool)
-+ return;
-+
-+ list_for_each_entry_safe(s, tmp, &pool->slices, entry) {
-+ list_del(&s->entry);
-+ kfree(s);
-+ }
-+
-+ put_write_access(file_inode(pool->f));
-+ fput(pool->f);
-+ kfree(pool);
-+}
-+
-+/**
-+ * kdbus_pool_accounted() - retrieve accounting information
-+ * @pool: pool to query
-+ * @size: output for overall pool size
-+ * @acc: output for currently accounted size
-+ *
-+ * This returns accounting information of the pool. Note that the data might
-+ * change after the function returns, as the pool lock is dropped. You need to
-+ * protect the data via other means, if you need reliable accounting.
-+ */
-+void kdbus_pool_accounted(struct kdbus_pool *pool, size_t *size, size_t *acc)
-+{
-+ mutex_lock(&pool->lock);
-+ if (size)
-+ *size = pool->size;
-+ if (acc)
-+ *acc = pool->accounted_size;
-+ mutex_unlock(&pool->lock);
-+}
-+
-+/**
-+ * kdbus_pool_slice_copy_iovec() - copy user memory to a slice
-+ * @slice: The slice to write to
-+ * @off: Offset in the slice to write to
-+ * @iov: iovec array, pointing to data to copy
-+ * @iov_len: Number of elements in @iov
-+ * @total_len: Total number of bytes described in members of @iov
-+ *
-+ * User memory referenced by @iov will be copied into @slice at offset @off.
-+ *
-+ * Return: the numbers of bytes copied, negative errno on failure.
-+ */
-+ssize_t
-+kdbus_pool_slice_copy_iovec(const struct kdbus_pool_slice *slice, loff_t off,
-+ struct iovec *iov, size_t iov_len, size_t total_len)
-+{
-+ struct iov_iter iter;
-+ ssize_t len;
-+
-+ if (WARN_ON(off + total_len > slice->size))
-+ return -EFAULT;
-+
-+ off += slice->off;
-+ iov_iter_init(&iter, WRITE, iov, iov_len, total_len);
-+ len = vfs_iter_write(slice->pool->f, &iter, &off);
-+
-+ return (len >= 0 && len != total_len) ? -EFAULT : len;
-+}
-+
-+/**
-+ * kdbus_pool_slice_copy_kvec() - copy kernel memory to a slice
-+ * @slice: The slice to write to
-+ * @off: Offset in the slice to write to
-+ * @kvec: kvec array, pointing to data to copy
-+ * @kvec_len: Number of elements in @kvec
-+ * @total_len: Total number of bytes described in members of @kvec
-+ *
-+ * Kernel memory referenced by @kvec will be copied into @slice at offset @off.
-+ *
-+ * Return: the numbers of bytes copied, negative errno on failure.
-+ */
-+ssize_t kdbus_pool_slice_copy_kvec(const struct kdbus_pool_slice *slice,
-+ loff_t off, struct kvec *kvec,
-+ size_t kvec_len, size_t total_len)
-+{
-+ struct iov_iter iter;
-+ mm_segment_t old_fs;
-+ ssize_t len;
-+
-+ if (WARN_ON(off + total_len > slice->size))
-+ return -EFAULT;
-+
-+ off += slice->off;
-+ iov_iter_kvec(&iter, WRITE | ITER_KVEC, kvec, kvec_len, total_len);
-+
-+ old_fs = get_fs();
-+ set_fs(get_ds());
-+ len = vfs_iter_write(slice->pool->f, &iter, &off);
-+ set_fs(old_fs);
-+
-+ return (len >= 0 && len != total_len) ? -EFAULT : len;
-+}
-+
-+/**
-+ * kdbus_pool_slice_copy() - copy data from one slice into another
-+ * @slice_dst: destination slice
-+ * @slice_src: source slice
-+ *
-+ * Return: 0 on success, negative error number on failure.
-+ */
-+int kdbus_pool_slice_copy(const struct kdbus_pool_slice *slice_dst,
-+ const struct kdbus_pool_slice *slice_src)
-+{
-+ struct file *f_src = slice_src->pool->f;
-+ struct file *f_dst = slice_dst->pool->f;
-+ struct inode *i_dst = file_inode(f_dst);
-+ struct address_space *mapping_dst = f_dst->f_mapping;
-+ const struct address_space_operations *aops = mapping_dst->a_ops;
-+ unsigned long len = slice_src->size;
-+ loff_t off_src = slice_src->off;
-+ loff_t off_dst = slice_dst->off;
-+ mm_segment_t old_fs;
-+ int ret = 0;
-+
-+ if (WARN_ON(slice_src->size != slice_dst->size) ||
-+ WARN_ON(slice_src->free || slice_dst->free))
-+ return -EINVAL;
-+
-+ mutex_lock(&i_dst->i_mutex);
-+ old_fs = get_fs();
-+ set_fs(get_ds());
-+ while (len > 0) {
-+ unsigned long page_off;
-+ unsigned long copy_len;
-+ char __user *kaddr;
-+ struct page *page;
-+ ssize_t n_read;
-+ void *fsdata;
-+ long status;
-+
-+ page_off = off_dst & (PAGE_CACHE_SIZE - 1);
-+ copy_len = min_t(unsigned long,
-+ PAGE_CACHE_SIZE - page_off, len);
-+
-+ status = aops->write_begin(f_dst, mapping_dst, off_dst,
-+ copy_len, 0, &page, &fsdata);
-+ if (unlikely(status < 0)) {
-+ ret = status;
-+ break;
-+ }
-+
-+ kaddr = (char __force __user *)kmap(page) + page_off;
-+ n_read = __vfs_read(f_src, kaddr, copy_len, &off_src);
-+ kunmap(page);
-+ mark_page_accessed(page);
-+ flush_dcache_page(page);
-+
-+ if (unlikely(n_read != copy_len)) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ status = aops->write_end(f_dst, mapping_dst, off_dst,
-+ copy_len, copy_len, page, fsdata);
-+ if (unlikely(status != copy_len)) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ off_dst += copy_len;
-+ len -= copy_len;
-+ }
-+ set_fs(old_fs);
-+ mutex_unlock(&i_dst->i_mutex);
-+
-+ return ret;
-+}
-+
-+/**
-+ * kdbus_pool_mmap() - map the pool into the process
-+ * @pool: The receiver's pool
-+ * @vma: passed by mmap() syscall
-+ *
-+ * Return: the result of the mmap() call, negative errno on failure.
-+ */
-+int kdbus_pool_mmap(const struct kdbus_pool *pool, struct vm_area_struct *vma)
-+{
-+ /* deny write access to the pool */
-+ if (vma->vm_flags & VM_WRITE)
-+ return -EPERM;
-+ vma->vm_flags &= ~VM_MAYWRITE;
-+
-+ /* do not allow to map more than the size of the file */
-+ if ((vma->vm_end - vma->vm_start) > pool->size)
-+ return -EFAULT;
-+
-+ /* replace the connection file with our shmem file */
-+ if (vma->vm_file)
-+ fput(vma->vm_file);
-+ vma->vm_file = get_file(pool->f);
-+
-+ return pool->f->f_op->mmap(pool->f, vma);
-+}
-diff --git a/ipc/kdbus/pool.h b/ipc/kdbus/pool.h
-new file mode 100644
-index 0000000..a903821
---- /dev/null
-+++ b/ipc/kdbus/pool.h
-@@ -0,0 +1,46 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_POOL_H
-+#define __KDBUS_POOL_H
-+
-+#include <linux/uio.h>
-+
-+struct kdbus_pool;
-+struct kdbus_pool_slice;
-+
-+struct kdbus_pool *kdbus_pool_new(const char *name, size_t size);
-+void kdbus_pool_free(struct kdbus_pool *pool);
-+void kdbus_pool_accounted(struct kdbus_pool *pool, size_t *size, size_t *acc);
-+int kdbus_pool_mmap(const struct kdbus_pool *pool, struct vm_area_struct *vma);
-+int kdbus_pool_release_offset(struct kdbus_pool *pool, size_t off);
-+void kdbus_pool_publish_empty(struct kdbus_pool *pool, u64 *off, u64 *size);
-+
-+struct kdbus_pool_slice *kdbus_pool_slice_alloc(struct kdbus_pool *pool,
-+ size_t size, bool accounted);
-+void kdbus_pool_slice_release(struct kdbus_pool_slice *slice);
-+void kdbus_pool_slice_publish(struct kdbus_pool_slice *slice,
-+ u64 *out_offset, u64 *out_size);
-+off_t kdbus_pool_slice_offset(const struct kdbus_pool_slice *slice);
-+size_t kdbus_pool_slice_size(const struct kdbus_pool_slice *slice);
-+int kdbus_pool_slice_copy(const struct kdbus_pool_slice *slice_dst,
-+ const struct kdbus_pool_slice *slice_src);
-+ssize_t kdbus_pool_slice_copy_kvec(const struct kdbus_pool_slice *slice,
-+ loff_t off, struct kvec *kvec,
-+ size_t kvec_count, size_t total_len);
-+ssize_t kdbus_pool_slice_copy_iovec(const struct kdbus_pool_slice *slice,
-+ loff_t off, struct iovec *iov,
-+ size_t iov_count, size_t total_len);
-+
-+#endif
-diff --git a/ipc/kdbus/queue.c b/ipc/kdbus/queue.c
-new file mode 100644
-index 0000000..f9c44d7
---- /dev/null
-+++ b/ipc/kdbus/queue.c
-@@ -0,0 +1,363 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/audit.h>
-+#include <linux/file.h>
-+#include <linux/fs.h>
-+#include <linux/hashtable.h>
-+#include <linux/idr.h>
-+#include <linux/init.h>
-+#include <linux/math64.h>
-+#include <linux/mm.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/poll.h>
-+#include <linux/sched.h>
-+#include <linux/sizes.h>
-+#include <linux/slab.h>
-+#include <linux/syscalls.h>
-+#include <linux/uio.h>
-+
-+#include "util.h"
-+#include "domain.h"
-+#include "connection.h"
-+#include "item.h"
-+#include "message.h"
-+#include "metadata.h"
-+#include "queue.h"
-+#include "reply.h"
-+
-+/**
-+ * kdbus_queue_init() - initialize data structure related to a queue
-+ * @queue: The queue to initialize
-+ */
-+void kdbus_queue_init(struct kdbus_queue *queue)
-+{
-+ INIT_LIST_HEAD(&queue->msg_list);
-+ queue->msg_prio_queue = RB_ROOT;
-+}
-+
-+/**
-+ * kdbus_queue_peek() - Retrieves an entry from a queue
-+ * @queue: The queue
-+ * @priority: The minimum priority of the entry to peek
-+ * @use_priority: Boolean flag whether or not to peek by priority
-+ *
-+ * Look for a entry in a queue, either by priority, or the oldest one (FIFO).
-+ * The entry is not freed, put off the queue's lists or anything else.
-+ *
-+ * Return: the peeked queue entry on success, NULL if no suitable msg is found
-+ */
-+struct kdbus_queue_entry *kdbus_queue_peek(struct kdbus_queue *queue,
-+ s64 priority, bool use_priority)
-+{
-+ struct kdbus_queue_entry *e;
-+
-+ if (list_empty(&queue->msg_list))
-+ return NULL;
-+
-+ if (use_priority) {
-+ /* get next entry with highest priority */
-+ e = rb_entry(queue->msg_prio_highest,
-+ struct kdbus_queue_entry, prio_node);
-+
-+ /* no entry with the requested priority */
-+ if (e->priority > priority)
-+ return NULL;
-+ } else {
-+ /* ignore the priority, return the next entry in the entry */
-+ e = list_first_entry(&queue->msg_list,
-+ struct kdbus_queue_entry, entry);
-+ }
-+
-+ return e;
-+}
-+
-+static void kdbus_queue_entry_link(struct kdbus_queue_entry *entry)
-+{
-+ struct kdbus_queue *queue = &entry->conn->queue;
-+ struct rb_node **n, *pn = NULL;
-+ bool highest = true;
-+
-+ lockdep_assert_held(&entry->conn->lock);
-+ if (WARN_ON(!list_empty(&entry->entry)))
-+ return;
-+
-+ /* sort into priority entry tree */
-+ n = &queue->msg_prio_queue.rb_node;
-+ while (*n) {
-+ struct kdbus_queue_entry *e;
-+
-+ pn = *n;
-+ e = rb_entry(pn, struct kdbus_queue_entry, prio_node);
-+
-+ /* existing node for this priority, add to its list */
-+ if (likely(entry->priority == e->priority)) {
-+ list_add_tail(&entry->prio_entry, &e->prio_entry);
-+ goto prio_done;
-+ }
-+
-+ if (entry->priority < e->priority) {
-+ n = &pn->rb_left;
-+ } else {
-+ n = &pn->rb_right;
-+ highest = false;
-+ }
-+ }
-+
-+ /* cache highest-priority entry */
-+ if (highest)
-+ queue->msg_prio_highest = &entry->prio_node;
-+
-+ /* new node for this priority */
-+ rb_link_node(&entry->prio_node, pn, n);
-+ rb_insert_color(&entry->prio_node, &queue->msg_prio_queue);
-+ INIT_LIST_HEAD(&entry->prio_entry);
-+
-+prio_done:
-+ /* add to unsorted fifo list */
-+ list_add_tail(&entry->entry, &queue->msg_list);
-+}
-+
-+static void kdbus_queue_entry_unlink(struct kdbus_queue_entry *entry)
-+{
-+ struct kdbus_queue *queue = &entry->conn->queue;
-+
-+ lockdep_assert_held(&entry->conn->lock);
-+ if (list_empty(&entry->entry))
-+ return;
-+
-+ list_del_init(&entry->entry);
-+
-+ if (list_empty(&entry->prio_entry)) {
-+ /*
-+ * Single entry for this priority, update cached
-+ * highest-priority entry, remove the tree node.
-+ */
-+ if (queue->msg_prio_highest == &entry->prio_node)
-+ queue->msg_prio_highest = rb_next(&entry->prio_node);
-+
-+ rb_erase(&entry->prio_node, &queue->msg_prio_queue);
-+ } else {
-+ struct kdbus_queue_entry *q;
-+
-+ /*
-+ * Multiple entries for this priority entry, get next one in
-+ * the list. Update cached highest-priority entry, store the
-+ * new one as the tree node.
-+ */
-+ q = list_first_entry(&entry->prio_entry,
-+ struct kdbus_queue_entry, prio_entry);
-+ list_del(&entry->prio_entry);
-+
-+ if (queue->msg_prio_highest == &entry->prio_node)
-+ queue->msg_prio_highest = &q->prio_node;
-+
-+ rb_replace_node(&entry->prio_node, &q->prio_node,
-+ &queue->msg_prio_queue);
-+ }
-+}
-+
-+/**
-+ * kdbus_queue_entry_new() - allocate a queue entry
-+ * @src: source connection, or NULL
-+ * @dst: destination connection
-+ * @s: staging object carrying the message
-+ *
-+ * Allocates a queue entry based on a given msg and allocate space for
-+ * the message payload and the requested metadata in the connection's pool.
-+ * The entry is not actually added to the queue's lists at this point.
-+ *
-+ * Return: the allocated entry on success, or an ERR_PTR on failures.
-+ */
-+struct kdbus_queue_entry *kdbus_queue_entry_new(struct kdbus_conn *src,
-+ struct kdbus_conn *dst,
-+ struct kdbus_staging *s)
-+{
-+ struct kdbus_queue_entry *entry;
-+ int ret;
-+
-+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
-+ if (!entry)
-+ return ERR_PTR(-ENOMEM);
-+
-+ INIT_LIST_HEAD(&entry->entry);
-+ entry->priority = s->msg->priority;
-+ entry->conn = kdbus_conn_ref(dst);
-+ entry->gaps = kdbus_gaps_ref(s->gaps);
-+
-+ entry->slice = kdbus_staging_emit(s, src, dst);
-+ if (IS_ERR(entry->slice)) {
-+ ret = PTR_ERR(entry->slice);
-+ entry->slice = NULL;
-+ goto error;
-+ }
-+
-+ entry->user = src ? kdbus_user_ref(src->user) : NULL;
-+ return entry;
-+
-+error:
-+ kdbus_queue_entry_free(entry);
-+ return ERR_PTR(ret);
-+}
-+
-+/**
-+ * kdbus_queue_entry_free() - free resources of an entry
-+ * @entry: The entry to free
-+ *
-+ * Removes resources allocated by a queue entry, along with the entry itself.
-+ * Note that the entry's slice is not freed at this point.
-+ */
-+void kdbus_queue_entry_free(struct kdbus_queue_entry *entry)
-+{
-+ if (!entry)
-+ return;
-+
-+ lockdep_assert_held(&entry->conn->lock);
-+
-+ kdbus_queue_entry_unlink(entry);
-+ kdbus_reply_unref(entry->reply);
-+
-+ if (entry->slice) {
-+ kdbus_conn_quota_dec(entry->conn, entry->user,
-+ kdbus_pool_slice_size(entry->slice),
-+ entry->gaps ? entry->gaps->n_fds : 0);
-+ kdbus_pool_slice_release(entry->slice);
-+ }
-+
-+ kdbus_user_unref(entry->user);
-+ kdbus_gaps_unref(entry->gaps);
-+ kdbus_conn_unref(entry->conn);
-+ kfree(entry);
-+}
-+
-+/**
-+ * kdbus_queue_entry_install() - install message components into the
-+ * receiver's process
-+ * @entry: The queue entry to install
-+ * @return_flags: Pointer to store the return flags for userspace
-+ * @install_fds: Whether or not to install associated file descriptors
-+ *
-+ * Return: 0 on success.
-+ */
-+int kdbus_queue_entry_install(struct kdbus_queue_entry *entry,
-+ u64 *return_flags, bool install_fds)
-+{
-+ bool incomplete_fds = false;
-+ int ret;
-+
-+ lockdep_assert_held(&entry->conn->lock);
-+
-+ ret = kdbus_gaps_install(entry->gaps, entry->slice, &incomplete_fds);
-+ if (ret < 0)
-+ return ret;
-+
-+ if (incomplete_fds)
-+ *return_flags |= KDBUS_RECV_RETURN_INCOMPLETE_FDS;
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_queue_entry_enqueue() - enqueue an entry
-+ * @entry: entry to enqueue
-+ * @reply: reply to link to this entry (or NULL if none)
-+ *
-+ * This enqueues an unqueued entry into the message queue of the linked
-+ * connection. It also binds a reply object to the entry so we can remember it
-+ * when the message is moved.
-+ *
-+ * Once this call returns (and the connection lock is released), this entry can
-+ * be dequeued by the target connection. Note that the entry will not be removed
-+ * from the queue until it is destroyed.
-+ */
-+void kdbus_queue_entry_enqueue(struct kdbus_queue_entry *entry,
-+ struct kdbus_reply *reply)
-+{
-+ lockdep_assert_held(&entry->conn->lock);
-+
-+ if (WARN_ON(entry->reply) || WARN_ON(!list_empty(&entry->entry)))
-+ return;
-+
-+ entry->reply = kdbus_reply_ref(reply);
-+ kdbus_queue_entry_link(entry);
-+}
-+
-+/**
-+ * kdbus_queue_entry_move() - move queue entry
-+ * @e: queue entry to move
-+ * @dst: destination connection to queue the entry on
-+ *
-+ * This moves a queue entry onto a different connection. It allocates a new
-+ * slice on the target connection and copies the message over. If the copy
-+ * succeeded, we move the entry from @src to @dst.
-+ *
-+ * On failure, the entry is left untouched.
-+ *
-+ * The queue entry must be queued right now, and after the call succeeds it will
-+ * be queued on the destination, but no longer on the source.
-+ *
-+ * The caller must hold the connection lock of the source *and* destination.
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_queue_entry_move(struct kdbus_queue_entry *e,
-+ struct kdbus_conn *dst)
-+{
-+ struct kdbus_pool_slice *slice = NULL;
-+ struct kdbus_conn *src = e->conn;
-+ size_t size, fds;
-+ int ret;
-+
-+ lockdep_assert_held(&src->lock);
-+ lockdep_assert_held(&dst->lock);
-+
-+ if (WARN_ON(list_empty(&e->entry)))
-+ return -EINVAL;
-+ if (src == dst)
-+ return 0;
-+
-+ size = kdbus_pool_slice_size(e->slice);
-+ fds = e->gaps ? e->gaps->n_fds : 0;
-+
-+ ret = kdbus_conn_quota_inc(dst, e->user, size, fds);
-+ if (ret < 0)
-+ return ret;
-+
-+ slice = kdbus_pool_slice_alloc(dst->pool, size, true);
-+ if (IS_ERR(slice)) {
-+ ret = PTR_ERR(slice);
-+ slice = NULL;
-+ goto error;
-+ }
-+
-+ ret = kdbus_pool_slice_copy(slice, e->slice);
-+ if (ret < 0)
-+ goto error;
-+
-+ kdbus_queue_entry_unlink(e);
-+ kdbus_conn_quota_dec(src, e->user, size, fds);
-+ kdbus_pool_slice_release(e->slice);
-+ kdbus_conn_unref(e->conn);
-+
-+ e->slice = slice;
-+ e->conn = kdbus_conn_ref(dst);
-+ kdbus_queue_entry_link(e);
-+
-+ return 0;
-+
-+error:
-+ kdbus_pool_slice_release(slice);
-+ kdbus_conn_quota_dec(dst, e->user, size, fds);
-+ return ret;
-+}
-diff --git a/ipc/kdbus/queue.h b/ipc/kdbus/queue.h
-new file mode 100644
-index 0000000..bf686d1
---- /dev/null
-+++ b/ipc/kdbus/queue.h
-@@ -0,0 +1,84 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_QUEUE_H
-+#define __KDBUS_QUEUE_H
-+
-+#include <linux/list.h>
-+#include <linux/rbtree.h>
-+
-+struct kdbus_conn;
-+struct kdbus_pool_slice;
-+struct kdbus_reply;
-+struct kdbus_staging;
-+struct kdbus_user;
-+
-+/**
-+ * struct kdbus_queue - a connection's message queue
-+ * @msg_list: List head for kdbus_queue_entry objects
-+ * @msg_prio_queue: RB tree root for messages, sorted by priority
-+ * @msg_prio_highest: Link to the RB node referencing the message with the
-+ * highest priority in the tree.
-+ */
-+struct kdbus_queue {
-+ struct list_head msg_list;
-+ struct rb_root msg_prio_queue;
-+ struct rb_node *msg_prio_highest;
-+};
-+
-+/**
-+ * struct kdbus_queue_entry - messages waiting to be read
-+ * @entry: Entry in the connection's list
-+ * @prio_node: Entry in the priority queue tree
-+ * @prio_entry: Queue tree node entry in the list of one priority
-+ * @priority: Message priority
-+ * @dst_name_id: The sequence number of the name this message is
-+ * addressed to, 0 for messages sent to an ID
-+ * @conn: Connection this entry is queued on
-+ * @gaps: Gaps object to fill message gaps at RECV time
-+ * @user: User used for accounting
-+ * @slice: Slice in the receiver's pool for the message
-+ * @reply: The reply block if a reply to this message is expected
-+ */
-+struct kdbus_queue_entry {
-+ struct list_head entry;
-+ struct rb_node prio_node;
-+ struct list_head prio_entry;
-+
-+ s64 priority;
-+ u64 dst_name_id;
-+
-+ struct kdbus_conn *conn;
-+ struct kdbus_gaps *gaps;
-+ struct kdbus_user *user;
-+ struct kdbus_pool_slice *slice;
-+ struct kdbus_reply *reply;
-+};
-+
-+void kdbus_queue_init(struct kdbus_queue *queue);
-+struct kdbus_queue_entry *kdbus_queue_peek(struct kdbus_queue *queue,
-+ s64 priority, bool use_priority);
-+
-+struct kdbus_queue_entry *kdbus_queue_entry_new(struct kdbus_conn *src,
-+ struct kdbus_conn *dst,
-+ struct kdbus_staging *s);
-+void kdbus_queue_entry_free(struct kdbus_queue_entry *entry);
-+int kdbus_queue_entry_install(struct kdbus_queue_entry *entry,
-+ u64 *return_flags, bool install_fds);
-+void kdbus_queue_entry_enqueue(struct kdbus_queue_entry *entry,
-+ struct kdbus_reply *reply);
-+int kdbus_queue_entry_move(struct kdbus_queue_entry *entry,
-+ struct kdbus_conn *dst);
-+
-+#endif /* __KDBUS_QUEUE_H */
-diff --git a/ipc/kdbus/reply.c b/ipc/kdbus/reply.c
-new file mode 100644
-index 0000000..e6791d8
---- /dev/null
-+++ b/ipc/kdbus/reply.c
-@@ -0,0 +1,252 @@
-+#include <linux/init.h>
-+#include <linux/mm.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/slab.h>
-+#include <linux/uio.h>
-+
-+#include "bus.h"
-+#include "connection.h"
-+#include "endpoint.h"
-+#include "message.h"
-+#include "metadata.h"
-+#include "names.h"
-+#include "domain.h"
-+#include "item.h"
-+#include "notify.h"
-+#include "policy.h"
-+#include "reply.h"
-+#include "util.h"
-+
-+/**
-+ * kdbus_reply_new() - Allocate and set up a new kdbus_reply object
-+ * @reply_src: The connection a reply is expected from
-+ * @reply_dst: The connection this reply object belongs to
-+ * @msg: Message associated with the reply
-+ * @name_entry: Name entry used to send the message
-+ * @sync: Whether or not to make this reply synchronous
-+ *
-+ * Allocate and fill a new kdbus_reply object.
-+ *
-+ * Return: New kdbus_conn object on success, ERR_PTR on error.
-+ */
-+struct kdbus_reply *kdbus_reply_new(struct kdbus_conn *reply_src,
-+ struct kdbus_conn *reply_dst,
-+ const struct kdbus_msg *msg,
-+ struct kdbus_name_entry *name_entry,
-+ bool sync)
-+{
-+ struct kdbus_reply *r;
-+ int ret;
-+
-+ if (atomic_inc_return(&reply_dst->request_count) >
-+ KDBUS_CONN_MAX_REQUESTS_PENDING) {
-+ ret = -EMLINK;
-+ goto exit_dec_request_count;
-+ }
-+
-+ r = kzalloc(sizeof(*r), GFP_KERNEL);
-+ if (!r) {
-+ ret = -ENOMEM;
-+ goto exit_dec_request_count;
-+ }
-+
-+ kref_init(&r->kref);
-+ INIT_LIST_HEAD(&r->entry);
-+ r->reply_src = kdbus_conn_ref(reply_src);
-+ r->reply_dst = kdbus_conn_ref(reply_dst);
-+ r->cookie = msg->cookie;
-+ r->name_id = name_entry ? name_entry->name_id : 0;
-+ r->deadline_ns = msg->timeout_ns;
-+
-+ if (sync) {
-+ r->sync = true;
-+ r->waiting = true;
-+ }
-+
-+ return r;
-+
-+exit_dec_request_count:
-+ atomic_dec(&reply_dst->request_count);
-+ return ERR_PTR(ret);
-+}
-+
-+static void __kdbus_reply_free(struct kref *kref)
-+{
-+ struct kdbus_reply *reply =
-+ container_of(kref, struct kdbus_reply, kref);
-+
-+ atomic_dec(&reply->reply_dst->request_count);
-+ kdbus_conn_unref(reply->reply_src);
-+ kdbus_conn_unref(reply->reply_dst);
-+ kfree(reply);
-+}
-+
-+/**
-+ * kdbus_reply_ref() - Increase reference on kdbus_reply
-+ * @r: The reply, may be %NULL
-+ *
-+ * Return: The reply object with an extra reference
-+ */
-+struct kdbus_reply *kdbus_reply_ref(struct kdbus_reply *r)
-+{
-+ if (r)
-+ kref_get(&r->kref);
-+ return r;
-+}
-+
-+/**
-+ * kdbus_reply_unref() - Decrease reference on kdbus_reply
-+ * @r: The reply, may be %NULL
-+ *
-+ * Return: NULL
-+ */
-+struct kdbus_reply *kdbus_reply_unref(struct kdbus_reply *r)
-+{
-+ if (r)
-+ kref_put(&r->kref, __kdbus_reply_free);
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_reply_link() - Link reply object into target connection
-+ * @r: Reply to link
-+ */
-+void kdbus_reply_link(struct kdbus_reply *r)
-+{
-+ if (WARN_ON(!list_empty(&r->entry)))
-+ return;
-+
-+ list_add(&r->entry, &r->reply_dst->reply_list);
-+ kdbus_reply_ref(r);
-+}
-+
-+/**
-+ * kdbus_reply_unlink() - Unlink reply object from target connection
-+ * @r: Reply to unlink
-+ */
-+void kdbus_reply_unlink(struct kdbus_reply *r)
-+{
-+ if (!list_empty(&r->entry)) {
-+ list_del_init(&r->entry);
-+ kdbus_reply_unref(r);
-+ }
-+}
-+
-+/**
-+ * kdbus_sync_reply_wakeup() - Wake a synchronously blocking reply
-+ * @reply: The reply object
-+ * @err: Error code to set on the remote side
-+ *
-+ * Wake up remote peer (method origin) with the appropriate synchronous reply
-+ * code.
-+ */
-+void kdbus_sync_reply_wakeup(struct kdbus_reply *reply, int err)
-+{
-+ if (WARN_ON(!reply->sync))
-+ return;
-+
-+ reply->waiting = false;
-+ reply->err = err;
-+ wake_up_interruptible(&reply->reply_dst->wait);
-+}
-+
-+/**
-+ * kdbus_reply_find() - Find the corresponding reply object
-+ * @replying: The replying connection or NULL
-+ * @reply_dst: The connection the reply will be sent to
-+ * (method origin)
-+ * @cookie: The cookie of the requesting message
-+ *
-+ * Lookup a reply object that should be sent as a reply by
-+ * @replying to @reply_dst with the given cookie.
-+ *
-+ * Callers must take the @reply_dst lock.
-+ *
-+ * Return: the corresponding reply object or NULL if not found
-+ */
-+struct kdbus_reply *kdbus_reply_find(struct kdbus_conn *replying,
-+ struct kdbus_conn *reply_dst,
-+ u64 cookie)
-+{
-+ struct kdbus_reply *r;
-+
-+ list_for_each_entry(r, &reply_dst->reply_list, entry) {
-+ if (r->cookie == cookie &&
-+ (!replying || r->reply_src == replying))
-+ return r;
-+ }
-+
-+ return NULL;
-+}
-+
-+/**
-+ * kdbus_reply_list_scan_work() - Worker callback to scan the replies of a
-+ * connection for exceeded timeouts
-+ * @work: Work struct of the connection to scan
-+ *
-+ * Walk the list of replies stored with a connection and look for entries
-+ * that have exceeded their timeout. If such an entry is found, a timeout
-+ * notification is sent to the waiting peer, and the reply is removed from
-+ * the list.
-+ *
-+ * The work is rescheduled to the nearest timeout found during the list
-+ * iteration.
-+ */
-+void kdbus_reply_list_scan_work(struct work_struct *work)
-+{
-+ struct kdbus_conn *conn =
-+ container_of(work, struct kdbus_conn, work.work);
-+ struct kdbus_reply *reply, *reply_tmp;
-+ u64 deadline = ~0ULL;
-+ u64 now;
-+
-+ now = ktime_get_ns();
-+
-+ mutex_lock(&conn->lock);
-+ if (!kdbus_conn_active(conn)) {
-+ mutex_unlock(&conn->lock);
-+ return;
-+ }
-+
-+ list_for_each_entry_safe(reply, reply_tmp, &conn->reply_list, entry) {
-+ /*
-+ * If the reply block is waiting for synchronous I/O,
-+ * the timeout is handled by wait_event_*_timeout(),
-+ * so we don't have to care for it here.
-+ */
-+ if (reply->sync && !reply->interrupted)
-+ continue;
-+
-+ WARN_ON(reply->reply_dst != conn);
-+
-+ if (reply->deadline_ns > now) {
-+ /* remember next timeout */
-+ if (deadline > reply->deadline_ns)
-+ deadline = reply->deadline_ns;
-+
-+ continue;
-+ }
-+
-+ /*
-+ * A zero deadline means the connection died, was
-+ * cleaned up already and the notification was sent.
-+ * Don't send notifications for reply trackers that were
-+ * left in an interrupted syscall state.
-+ */
-+ if (reply->deadline_ns != 0 && !reply->interrupted)
-+ kdbus_notify_reply_timeout(conn->ep->bus, conn->id,
-+ reply->cookie);
-+
-+ kdbus_reply_unlink(reply);
-+ }
-+
-+ /* rearm delayed work with next timeout */
-+ if (deadline != ~0ULL)
-+ schedule_delayed_work(&conn->work,
-+ nsecs_to_jiffies(deadline - now));
-+
-+ mutex_unlock(&conn->lock);
-+
-+ kdbus_notify_flush(conn->ep->bus);
-+}
-diff --git a/ipc/kdbus/reply.h b/ipc/kdbus/reply.h
-new file mode 100644
-index 0000000..68d5232
---- /dev/null
-+++ b/ipc/kdbus/reply.h
-@@ -0,0 +1,68 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_REPLY_H
-+#define __KDBUS_REPLY_H
-+
-+/**
-+ * struct kdbus_reply - an entry of kdbus_conn's list of replies
-+ * @kref: Ref-count of this object
-+ * @entry: The entry of the connection's reply_list
-+ * @reply_src: The connection the reply will be sent from
-+ * @reply_dst: The connection the reply will be sent to
-+ * @queue_entry: The queue entry item that is prepared by the replying
-+ * connection
-+ * @deadline_ns: The deadline of the reply, in nanoseconds
-+ * @cookie: The cookie of the requesting message
-+ * @name_id: ID of the well-known name the original msg was sent to
-+ * @sync: The reply block is waiting for synchronous I/O
-+ * @waiting: The condition to synchronously wait for
-+ * @interrupted: The sync reply was left in an interrupted state
-+ * @err: The error code for the synchronous reply
-+ */
-+struct kdbus_reply {
-+ struct kref kref;
-+ struct list_head entry;
-+ struct kdbus_conn *reply_src;
-+ struct kdbus_conn *reply_dst;
-+ struct kdbus_queue_entry *queue_entry;
-+ u64 deadline_ns;
-+ u64 cookie;
-+ u64 name_id;
-+ bool sync:1;
-+ bool waiting:1;
-+ bool interrupted:1;
-+ int err;
-+};
-+
-+struct kdbus_reply *kdbus_reply_new(struct kdbus_conn *reply_src,
-+ struct kdbus_conn *reply_dst,
-+ const struct kdbus_msg *msg,
-+ struct kdbus_name_entry *name_entry,
-+ bool sync);
-+
-+struct kdbus_reply *kdbus_reply_ref(struct kdbus_reply *r);
-+struct kdbus_reply *kdbus_reply_unref(struct kdbus_reply *r);
-+
-+void kdbus_reply_link(struct kdbus_reply *r);
-+void kdbus_reply_unlink(struct kdbus_reply *r);
-+
-+struct kdbus_reply *kdbus_reply_find(struct kdbus_conn *replying,
-+ struct kdbus_conn *reply_dst,
-+ u64 cookie);
-+
-+void kdbus_sync_reply_wakeup(struct kdbus_reply *reply, int err);
-+void kdbus_reply_list_scan_work(struct work_struct *work);
-+
-+#endif /* __KDBUS_REPLY_H */
-diff --git a/ipc/kdbus/util.c b/ipc/kdbus/util.c
-new file mode 100644
-index 0000000..72b1883
---- /dev/null
-+++ b/ipc/kdbus/util.c
-@@ -0,0 +1,156 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/capability.h>
-+#include <linux/cred.h>
-+#include <linux/ctype.h>
-+#include <linux/err.h>
-+#include <linux/file.h>
-+#include <linux/slab.h>
-+#include <linux/string.h>
-+#include <linux/uaccess.h>
-+#include <linux/uio.h>
-+#include <linux/user_namespace.h>
-+
-+#include "limits.h"
-+#include "util.h"
-+
-+/**
-+ * kdbus_copy_from_user() - copy aligned data from user-space
-+ * @dest: target buffer in kernel memory
-+ * @user_ptr: user-provided source buffer
-+ * @size: memory size to copy from user
-+ *
-+ * This copies @size bytes from @user_ptr into the kernel, just like
-+ * copy_from_user() does. But we enforce an 8-byte alignment and reject any
-+ * unaligned user-space pointers.
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_copy_from_user(void *dest, void __user *user_ptr, size_t size)
-+{
-+ if (!KDBUS_IS_ALIGNED8((uintptr_t)user_ptr))
-+ return -EFAULT;
-+
-+ if (copy_from_user(dest, user_ptr, size))
-+ return -EFAULT;
-+
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_verify_uid_prefix() - verify UID prefix of a user-supplied name
-+ * @name: user-supplied name to verify
-+ * @user_ns: user-namespace to act in
-+ * @kuid: Kernel internal uid of user
-+ *
-+ * This verifies that the user-supplied name @name has their UID as prefix. This
-+ * is the default name-spacing policy we enforce on user-supplied names for
-+ * public kdbus entities like buses and endpoints.
-+ *
-+ * The user must supply names prefixed with "<UID>-", whereas the UID is
-+ * interpreted in the user-namespace of the domain. If the user fails to supply
-+ * such a prefixed name, we reject it.
-+ *
-+ * Return: 0 on success, negative error code on failure
-+ */
-+int kdbus_verify_uid_prefix(const char *name, struct user_namespace *user_ns,
-+ kuid_t kuid)
-+{
-+ uid_t uid;
-+ char prefix[16];
-+
-+ /*
-+ * The kuid must have a mapping into the userns of the domain
-+ * otherwise do not allow creation of buses nor endpoints.
-+ */
-+ uid = from_kuid(user_ns, kuid);
-+ if (uid == (uid_t) -1)
-+ return -EINVAL;
-+
-+ snprintf(prefix, sizeof(prefix), "%u-", uid);
-+ if (strncmp(name, prefix, strlen(prefix)) != 0)
-+ return -EINVAL;
-+
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_sanitize_attach_flags() - Sanitize attach flags from user-space
-+ * @flags: Attach flags provided by userspace
-+ * @attach_flags: A pointer where to store the valid attach flags
-+ *
-+ * Convert attach-flags provided by user-space into a valid mask. If the mask
-+ * is invalid, an error is returned. The sanitized attach flags are stored in
-+ * the output parameter.
-+ *
-+ * Return: 0 on success, negative error on failure.
-+ */
-+int kdbus_sanitize_attach_flags(u64 flags, u64 *attach_flags)
-+{
-+ /* 'any' degrades to 'all' for compatibility */
-+ if (flags == _KDBUS_ATTACH_ANY)
-+ flags = _KDBUS_ATTACH_ALL;
-+
-+ /* reject unknown attach flags */
-+ if (flags & ~_KDBUS_ATTACH_ALL)
-+ return -EINVAL;
-+
-+ *attach_flags = flags;
-+ return 0;
-+}
-+
-+/**
-+ * kdbus_kvec_set - helper utility to assemble kvec arrays
-+ * @kvec: kvec entry to use
-+ * @src: Source address to set in @kvec
-+ * @len: Number of bytes in @src
-+ * @total_len: Pointer to total length variable
-+ *
-+ * Set @src and @len in @kvec, and increase @total_len by @len.
-+ */
-+void kdbus_kvec_set(struct kvec *kvec, void *src, size_t len, u64 *total_len)
-+{
-+ kvec->iov_base = src;
-+ kvec->iov_len = len;
-+ *total_len += len;
-+}
-+
-+static const char * const zeros = "\0\0\0\0\0\0\0";
-+
-+/**
-+ * kdbus_kvec_pad - conditionally write a padding kvec
-+ * @kvec: kvec entry to use
-+ * @len: Total length used for kvec array
-+ *
-+ * Check if the current total byte length of the array in @len is aligned to
-+ * 8 bytes. If it isn't, fill @kvec with padding information and increase @len
-+ * by the number of bytes stored in @kvec.
-+ *
-+ * Return: the number of added padding bytes.
-+ */
-+size_t kdbus_kvec_pad(struct kvec *kvec, u64 *len)
-+{
-+ size_t pad = KDBUS_ALIGN8(*len) - *len;
-+
-+ if (!pad)
-+ return 0;
-+
-+ kvec->iov_base = (void *)zeros;
-+ kvec->iov_len = pad;
-+
-+ *len += pad;
-+
-+ return pad;
-+}
-diff --git a/ipc/kdbus/util.h b/ipc/kdbus/util.h
-new file mode 100644
-index 0000000..5297166
---- /dev/null
-+++ b/ipc/kdbus/util.h
-@@ -0,0 +1,73 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-+ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ * Copyright (C) 2013-2015 Linux Foundation
-+ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef __KDBUS_UTIL_H
-+#define __KDBUS_UTIL_H
-+
-+#include <linux/dcache.h>
-+#include <linux/ioctl.h>
-+
-+#include <uapi/linux/kdbus.h>
-+
-+/* all exported addresses are 64 bit */
-+#define KDBUS_PTR(addr) ((void __user *)(uintptr_t)(addr))
-+
-+/* all exported sizes are 64 bit and data aligned to 64 bit */
-+#define KDBUS_ALIGN8(s) ALIGN((s), 8)
-+#define KDBUS_IS_ALIGNED8(s) (IS_ALIGNED(s, 8))
-+
-+/**
-+ * kdbus_member_set_user - write a structure member to user memory
-+ * @_s: Variable to copy from
-+ * @_b: Buffer to write to
-+ * @_t: Structure type
-+ * @_m: Member name in the passed structure
-+ *
-+ * Return: the result of copy_to_user()
-+ */
-+#define kdbus_member_set_user(_s, _b, _t, _m) \
-+({ \
-+ u64 __user *_sz = \
-+ (void __user *)((u8 __user *)(_b) + offsetof(_t, _m)); \
-+ copy_to_user(_sz, _s, FIELD_SIZEOF(_t, _m)); \
-+})
-+
-+/**
-+ * kdbus_strhash - calculate a hash
-+ * @str: String
-+ *
-+ * Return: hash value
-+ */
-+static inline unsigned int kdbus_strhash(const char *str)
-+{
-+ unsigned long hash = init_name_hash();
-+
-+ while (*str)
-+ hash = partial_name_hash(*str++, hash);
-+
-+ return end_name_hash(hash);
-+}
-+
-+int kdbus_verify_uid_prefix(const char *name, struct user_namespace *user_ns,
-+ kuid_t kuid);
-+int kdbus_sanitize_attach_flags(u64 flags, u64 *attach_flags);
-+
-+int kdbus_copy_from_user(void *dest, void __user *user_ptr, size_t size);
-+
-+struct kvec;
-+
-+void kdbus_kvec_set(struct kvec *kvec, void *src, size_t len, u64 *total_len);
-+size_t kdbus_kvec_pad(struct kvec *kvec, u64 *len);
-+
-+#endif
-diff --git a/samples/Kconfig b/samples/Kconfig
-index 224ebb4..a4c6b2f 100644
---- a/samples/Kconfig
-+++ b/samples/Kconfig
-@@ -55,6 +55,13 @@ config SAMPLE_KDB
- Build an example of how to dynamically add the hello
- command to the kdb shell.
-
-+config SAMPLE_KDBUS
-+ bool "Build kdbus API example"
-+ depends on KDBUS
-+ help
-+ Build an example of how the kdbus API can be used from
-+ userspace.
-+
- config SAMPLE_RPMSG_CLIENT
- tristate "Build rpmsg client sample -- loadable modules only"
- depends on RPMSG && m
-diff --git a/samples/Makefile b/samples/Makefile
-index f00257b..f0ad51e 100644
---- a/samples/Makefile
-+++ b/samples/Makefile
-@@ -1,4 +1,5 @@
- # Makefile for Linux samples code
-
- obj-$(CONFIG_SAMPLES) += kobject/ kprobes/ trace_events/ livepatch/ \
-- hw_breakpoint/ kfifo/ kdb/ hidraw/ rpmsg/ seccomp/
-+ hw_breakpoint/ kfifo/ kdb/ kdbus/ hidraw/ rpmsg/ \
-+ seccomp/
-diff --git a/samples/kdbus/.gitignore b/samples/kdbus/.gitignore
-new file mode 100644
-index 0000000..ee07d98
---- /dev/null
-+++ b/samples/kdbus/.gitignore
-@@ -0,0 +1 @@
-+kdbus-workers
-diff --git a/samples/kdbus/Makefile b/samples/kdbus/Makefile
-new file mode 100644
-index 0000000..137f842
---- /dev/null
-+++ b/samples/kdbus/Makefile
-@@ -0,0 +1,9 @@
-+# kbuild trick to avoid linker error. Can be omitted if a module is built.
-+obj- := dummy.o
-+
-+hostprogs-$(CONFIG_SAMPLE_KDBUS) += kdbus-workers
-+
-+always := $(hostprogs-y)
-+
-+HOSTCFLAGS_kdbus-workers.o += -I$(objtree)/usr/include
-+HOSTLOADLIBES_kdbus-workers := -lrt
-diff --git a/samples/kdbus/kdbus-api.h b/samples/kdbus/kdbus-api.h
-new file mode 100644
-index 0000000..7f3abae
---- /dev/null
-+++ b/samples/kdbus/kdbus-api.h
-@@ -0,0 +1,114 @@
-+#ifndef KDBUS_API_H
-+#define KDBUS_API_H
-+
-+#include <sys/ioctl.h>
-+#include <linux/kdbus.h>
-+
-+#define KDBUS_ALIGN8(l) (((l) + 7) & ~7)
-+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
-+#define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
-+#define KDBUS_ITEM_NEXT(item) \
-+ (typeof(item))((uint8_t *)(item) + KDBUS_ALIGN8((item)->size))
-+#define KDBUS_FOREACH(iter, first, _size) \
-+ for ((iter) = (first); \
-+ ((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
-+ ((uint8_t *)(iter) >= (uint8_t *)(first)); \
-+ (iter) = (void *)((uint8_t *)(iter) + KDBUS_ALIGN8((iter)->size)))
-+
-+static inline int kdbus_cmd_bus_make(int control_fd, struct kdbus_cmd *cmd)
-+{
-+ int ret = ioctl(control_fd, KDBUS_CMD_BUS_MAKE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_endpoint_make(int bus_fd, struct kdbus_cmd *cmd)
-+{
-+ int ret = ioctl(bus_fd, KDBUS_CMD_ENDPOINT_MAKE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_endpoint_update(int ep_fd, struct kdbus_cmd *cmd)
-+{
-+ int ret = ioctl(ep_fd, KDBUS_CMD_ENDPOINT_UPDATE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_hello(int bus_fd, struct kdbus_cmd_hello *cmd)
-+{
-+ int ret = ioctl(bus_fd, KDBUS_CMD_HELLO, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_update(int fd, struct kdbus_cmd *cmd)
-+{
-+ int ret = ioctl(fd, KDBUS_CMD_UPDATE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_byebye(int conn_fd, struct kdbus_cmd *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_BYEBYE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_free(int conn_fd, struct kdbus_cmd_free *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_FREE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_conn_info(int conn_fd, struct kdbus_cmd_info *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_CONN_INFO, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_bus_creator_info(int conn_fd, struct kdbus_cmd_info *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_BUS_CREATOR_INFO, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_list(int fd, struct kdbus_cmd_list *cmd)
-+{
-+ int ret = ioctl(fd, KDBUS_CMD_LIST, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_send(int conn_fd, struct kdbus_cmd_send *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_SEND, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_recv(int conn_fd, struct kdbus_cmd_recv *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_RECV, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_name_acquire(int conn_fd, struct kdbus_cmd *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_NAME_ACQUIRE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_name_release(int conn_fd, struct kdbus_cmd *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_NAME_RELEASE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_match_add(int conn_fd, struct kdbus_cmd_match *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_MATCH_ADD, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+static inline int kdbus_cmd_match_remove(int conn_fd, struct kdbus_cmd_match *cmd)
-+{
-+ int ret = ioctl(conn_fd, KDBUS_CMD_MATCH_REMOVE, cmd);
-+ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
-+}
-+
-+#endif /* KDBUS_API_H */
-diff --git a/samples/kdbus/kdbus-workers.c b/samples/kdbus/kdbus-workers.c
-new file mode 100644
-index 0000000..5a6dfdc
---- /dev/null
-+++ b/samples/kdbus/kdbus-workers.c
-@@ -0,0 +1,1346 @@
-+/*
-+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+/*
-+ * Example: Workers
-+ * This program computes prime-numbers based on the sieve of Eratosthenes. The
-+ * master sets up a shared memory region and spawns workers which clear out the
-+ * non-primes. The master reacts to keyboard input and to client-requests to
-+ * control what each worker does. Note that this is in no way meant as efficient
-+ * way to compute primes. It should only serve as example how a master/worker
-+ * concept can be implemented with kdbus used as control messages.
-+ *
-+ * The main process is called the 'master'. It creates a new, private bus which
-+ * will be used between the master and its workers to communicate. The master
-+ * then spawns a fixed number of workers. Whenever a worker dies (detected via
-+ * SIGCHLD), the master spawns a new worker. When done, the master waits for all
-+ * workers to exit, prints a status report and exits itself.
-+ *
-+ * The master process does *not* keep track of its workers. Instead, this
-+ * example implements a PULL model. That is, the master acquires a well-known
-+ * name on the bus which each worker uses to request tasks from the master. If
-+ * there are no more tasks, the master will return an empty task-list, which
-+ * casues a worker to exit immediately.
-+ *
-+ * As tasks can be computationally expensive, we support cancellation. Whenever
-+ * the master process is interrupted, it will drop its well-known name on the
-+ * bus. This causes kdbus to broadcast a name-change notification. The workers
-+ * check for broadcast messages regularly and will exit if they receive one.
-+ *
-+ * This example exists of 4 objects:
-+ * * master: The master object contains the context of the master process. This
-+ * process manages the prime-context, spawns workers and assigns
-+ * prime-ranges to each worker to compute.
-+ * The master itself does not do any prime-computations itself.
-+ * * child: The child object contains the context of a worker. It inherits the
-+ * prime context from its parent (the master) and then creates a new
-+ * bus context to request prime-ranges to compute.
-+ * * prime: The "prime" object is used to abstract how we compute primes. When
-+ * allocated, it prepares a memory region to hold 1 bit for each
-+ * natural number up to a fixed maximum ('MAX_PRIMES').
-+ * The memory region is backed by a memfd which we share between
-+ * processes. Each worker now gets assigned a range of natural
-+ * numbers which it clears multiples of off the memory region. The
-+ * master process is responsible of distributing all natural numbers
-+ * up to the fixed maximum to its workers.
-+ * * bus: The bus object is an abstraction of the kdbus API. It is pretty
-+ * straightfoward and only manages the connection-fd plus the
-+ * memory-mapped pool in a single object.
-+ *
-+ * This example is in reversed order, which should make it easier to read
-+ * top-down, but requires some forward-declarations. Just ignore those.
-+ */
-+
-+#include <stdio.h>
-+#include <stdlib.h>
-+#include <sys/syscall.h>
-+
-+/* glibc < 2.7 does not ship sys/signalfd.h */
-+/* we require kernels with __NR_memfd_create */
-+#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 7 && defined(__NR_memfd_create)
-+
-+#include <ctype.h>
-+#include <errno.h>
-+#include <fcntl.h>
-+#include <linux/memfd.h>
-+#include <signal.h>
-+#include <stdbool.h>
-+#include <stddef.h>
-+#include <stdint.h>
-+#include <string.h>
-+#include <sys/mman.h>
-+#include <sys/poll.h>
-+#include <sys/signalfd.h>
-+#include <sys/time.h>
-+#include <sys/wait.h>
-+#include <time.h>
-+#include <unistd.h>
-+#include "kdbus-api.h"
-+
-+/* FORWARD DECLARATIONS */
-+
-+#define POOL_SIZE (16 * 1024 * 1024)
-+#define MAX_PRIMES (2UL << 24)
-+#define WORKER_COUNT (16)
-+#define PRIME_STEPS (65536 * 4)
-+
-+static const char *arg_busname = "example-workers";
-+static const char *arg_modname = "kdbus";
-+static const char *arg_master = "org.freedesktop.master";
-+
-+static int err_assert(int r_errno, const char *msg, const char *func, int line,
-+ const char *file)
-+{
-+ r_errno = (r_errno != 0) ? -abs(r_errno) : -EFAULT;
-+ if (r_errno < 0) {
-+ errno = -r_errno;
-+ fprintf(stderr, "ERR: %s: %m (%s:%d in %s)\n",
-+ msg, func, line, file);
-+ }
-+ return r_errno;
-+}
-+
-+#define err_r(_r, _msg) err_assert((_r), (_msg), __func__, __LINE__, __FILE__)
-+#define err(_msg) err_r(errno, (_msg))
-+
-+struct prime;
-+struct bus;
-+struct master;
-+struct child;
-+
-+struct prime {
-+ int fd;
-+ uint8_t *area;
-+ size_t max;
-+ size_t done;
-+ size_t status;
-+};
-+
-+static int prime_new(struct prime **out);
-+static void prime_free(struct prime *p);
-+static bool prime_done(struct prime *p);
-+static void prime_consume(struct prime *p, size_t amount);
-+static int prime_run(struct prime *p, struct bus *cancel, size_t number);
-+static void prime_print(struct prime *p);
-+
-+struct bus {
-+ int fd;
-+ uint8_t *pool;
-+};
-+
-+static int bus_open_connection(struct bus **out, uid_t uid, const char *name,
-+ uint64_t recv_flags);
-+static void bus_close_connection(struct bus *b);
-+static void bus_poool_free_slice(struct bus *b, uint64_t offset);
-+static int bus_acquire_name(struct bus *b, const char *name);
-+static int bus_install_name_loss_match(struct bus *b, const char *name);
-+static int bus_poll(struct bus *b);
-+static int bus_make(uid_t uid, const char *name);
-+
-+struct master {
-+ size_t n_workers;
-+ size_t max_workers;
-+
-+ int signal_fd;
-+ int control_fd;
-+
-+ struct prime *prime;
-+ struct bus *bus;
-+};
-+
-+static int master_new(struct master **out);
-+static void master_free(struct master *m);
-+static int master_run(struct master *m);
-+static int master_poll(struct master *m);
-+static int master_handle_stdin(struct master *m);
-+static int master_handle_signal(struct master *m);
-+static int master_handle_bus(struct master *m);
-+static int master_reply(struct master *m, const struct kdbus_msg *msg);
-+static int master_waitpid(struct master *m);
-+static int master_spawn(struct master *m);
-+
-+struct child {
-+ struct bus *bus;
-+ struct prime *prime;
-+};
-+
-+static int child_new(struct child **out, struct prime *p);
-+static void child_free(struct child *c);
-+static int child_run(struct child *c);
-+
-+/* END OF FORWARD DECLARATIONS */
-+
-+/*
-+ * This is the main entrypoint of this example. It is pretty straightforward. We
-+ * create a master object, run the computation, print a status report and then
-+ * exit. Nothing particularly interesting here, so lets look into the master
-+ * object...
-+ */
-+int main(int argc, char **argv)
-+{
-+ struct master *m = NULL;
-+ int r;
-+
-+ r = master_new(&m);
-+ if (r < 0)
-+ goto out;
-+
-+ r = master_run(m);
-+ if (r < 0)
-+ goto out;
-+
-+ if (0)
-+ prime_print(m->prime);
-+
-+out:
-+ master_free(m);
-+ if (r < 0 && r != -EINTR)
-+ fprintf(stderr, "failed\n");
-+ else
-+ fprintf(stderr, "done\n");
-+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-+}
-+
-+/*
-+ * ...this will allocate a new master context. It keeps track of the current
-+ * number of children/workers that are running, manages a signalfd to track
-+ * SIGCHLD, and creates a private kdbus bus. Afterwards, it opens its connection
-+ * to the bus and acquires a well known-name (arg_master).
-+ */
-+static int master_new(struct master **out)
-+{
-+ struct master *m;
-+ sigset_t smask;
-+ int r;
-+
-+ m = calloc(1, sizeof(*m));
-+ if (!m)
-+ return err("cannot allocate master");
-+
-+ m->max_workers = WORKER_COUNT;
-+ m->signal_fd = -1;
-+ m->control_fd = -1;
-+
-+ /* Block SIGINT and SIGCHLD signals */
-+ sigemptyset(&smask);
-+ sigaddset(&smask, SIGINT);
-+ sigaddset(&smask, SIGCHLD);
-+ sigprocmask(SIG_BLOCK, &smask, NULL);
-+
-+ m->signal_fd = signalfd(-1, &smask, SFD_CLOEXEC);
-+ if (m->signal_fd < 0) {
-+ r = err("cannot create signalfd");
-+ goto error;
-+ }
-+
-+ r = prime_new(&m->prime);
-+ if (r < 0)
-+ goto error;
-+
-+ m->control_fd = bus_make(getuid(), arg_busname);
-+ if (m->control_fd < 0) {
-+ r = m->control_fd;
-+ goto error;
-+ }
-+
-+ /*
-+ * Open a bus connection for the master, and require each received
-+ * message to have a metadata item of type KDBUS_ITEM_PIDS attached.
-+ * The current UID is needed to compute the name of the bus node to
-+ * connect to.
-+ */
-+ r = bus_open_connection(&m->bus, getuid(),
-+ arg_busname, KDBUS_ATTACH_PIDS);
-+ if (r < 0)
-+ goto error;
-+
-+ /*
-+ * Acquire a well-known name on the bus, so children can address
-+ * messages to the master using KDBUS_DST_ID_NAME as destination-ID
-+ * of messages.
-+ */
-+ r = bus_acquire_name(m->bus, arg_master);
-+ if (r < 0)
-+ goto error;
-+
-+ *out = m;
-+ return 0;
-+
-+error:
-+ master_free(m);
-+ return r;
-+}
-+
-+/* pretty straightforward destructor of a master object */
-+static void master_free(struct master *m)
-+{
-+ if (!m)
-+ return;
-+
-+ bus_close_connection(m->bus);
-+ if (m->control_fd >= 0)
-+ close(m->control_fd);
-+ prime_free(m->prime);
-+ if (m->signal_fd >= 0)
-+ close(m->signal_fd);
-+ free(m);
-+}
-+
-+static int master_run(struct master *m)
-+{
-+ int res, r = 0;
-+
-+ while (!prime_done(m->prime)) {
-+ while (m->n_workers < m->max_workers) {
-+ r = master_spawn(m);
-+ if (r < 0)
-+ break;
-+ }
-+
-+ r = master_poll(m);
-+ if (r < 0)
-+ break;
-+ }
-+
-+ if (r < 0) {
-+ bus_close_connection(m->bus);
-+ m->bus = NULL;
-+ }
-+
-+ while (m->n_workers > 0) {
-+ res = master_poll(m);
-+ if (res < 0) {
-+ if (m->bus) {
-+ bus_close_connection(m->bus);
-+ m->bus = NULL;
-+ }
-+ r = res;
-+ }
-+ }
-+
-+ return r == -EINTR ? 0 : r;
-+}
-+
-+static int master_poll(struct master *m)
-+{
-+ struct pollfd fds[3] = {};
-+ int r = 0, n = 0;
-+
-+ /*
-+ * Add stdin, the eventfd and the connection owner file descriptor to
-+ * the pollfd table, and handle incoming traffic on the latter in
-+ * master_handle_bus().
-+ */
-+ fds[n].fd = STDIN_FILENO;
-+ fds[n++].events = POLLIN;
-+ fds[n].fd = m->signal_fd;
-+ fds[n++].events = POLLIN;
-+ if (m->bus) {
-+ fds[n].fd = m->bus->fd;
-+ fds[n++].events = POLLIN;
-+ }
-+
-+ r = poll(fds, n, -1);
-+ if (r < 0)
-+ return err("poll() failed");
-+
-+ if (fds[0].revents & POLLIN)
-+ r = master_handle_stdin(m);
-+ else if (fds[0].revents)
-+ r = err("ERR/HUP on stdin");
-+ if (r < 0)
-+ return r;
-+
-+ if (fds[1].revents & POLLIN)
-+ r = master_handle_signal(m);
-+ else if (fds[1].revents)
-+ r = err("ERR/HUP on signalfd");
-+ if (r < 0)
-+ return r;
-+
-+ if (fds[2].revents & POLLIN)
-+ r = master_handle_bus(m);
-+ else if (fds[2].revents)
-+ r = err("ERR/HUP on bus");
-+
-+ return r;
-+}
-+
-+static int master_handle_stdin(struct master *m)
-+{
-+ char buf[128];
-+ ssize_t l;
-+ int r = 0;
-+
-+ l = read(STDIN_FILENO, buf, sizeof(buf));
-+ if (l < 0)
-+ return err("cannot read stdin");
-+ if (l == 0)
-+ return err_r(-EINVAL, "EOF on stdin");
-+
-+ while (l-- > 0) {
-+ switch (buf[l]) {
-+ case 'q':
-+ /* quit */
-+ r = -EINTR;
-+ break;
-+ case '\n':
-+ case ' ':
-+ /* ignore */
-+ break;
-+ default:
-+ if (isgraph(buf[l]))
-+ fprintf(stderr, "invalid input '%c'\n", buf[l]);
-+ else
-+ fprintf(stderr, "invalid input 0x%x\n", buf[l]);
-+ break;
-+ }
-+ }
-+
-+ return r;
-+}
-+
-+static int master_handle_signal(struct master *m)
-+{
-+ struct signalfd_siginfo val;
-+ ssize_t l;
-+
-+ l = read(m->signal_fd, &val, sizeof(val));
-+ if (l < 0)
-+ return err("cannot read signalfd");
-+ if (l != sizeof(val))
-+ return err_r(-EINVAL, "invalid data from signalfd");
-+
-+ switch (val.ssi_signo) {
-+ case SIGCHLD:
-+ return master_waitpid(m);
-+ case SIGINT:
-+ return err_r(-EINTR, "interrupted");
-+ default:
-+ return err_r(-EINVAL, "caught invalid signal");
-+ }
-+}
-+
-+static int master_handle_bus(struct master *m)
-+{
-+ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
-+ const struct kdbus_msg *msg = NULL;
-+ const struct kdbus_item *item;
-+ const struct kdbus_vec *vec = NULL;
-+ int r = 0;
-+
-+ /*
-+ * To receive a message, the KDBUS_CMD_RECV ioctl is used.
-+ * It takes an argument of type 'struct kdbus_cmd_recv', which
-+ * will contain information on the received message when the call
-+ * returns. See kdbus.message(7).
-+ */
-+ r = kdbus_cmd_recv(m->bus->fd, &recv);
-+ /*
-+ * EAGAIN is returned when there is no message waiting on this
-+ * connection. This is not an error - simply bail out.
-+ */
-+ if (r == -EAGAIN)
-+ return 0;
-+ if (r < 0)
-+ return err_r(r, "cannot receive message");
-+
-+ /*
-+ * Messages received by a connection are stored inside the connection's
-+ * pool, at an offset that has been returned in the 'recv' command
-+ * struct above. The value describes the relative offset from the
-+ * start address of the pool. A message is described with
-+ * 'struct kdbus_msg'. See kdbus.message(7).
-+ */
-+ msg = (void *)(m->bus->pool + recv.msg.offset);
-+
-+ /*
-+ * A messages describes its actual payload in an array of items.
-+ * KDBUS_FOREACH() is a simple iterator that walks such an array.
-+ * struct kdbus_msg has a field to denote its total size, which is
-+ * needed to determine the number of items in the array.
-+ */
-+ KDBUS_FOREACH(item, msg->items,
-+ msg->size - offsetof(struct kdbus_msg, items)) {
-+ /*
-+ * An item of type PAYLOAD_OFF describes in-line memory
-+ * stored in the pool at a described offset. That offset is
-+ * relative to the start address of the message header.
-+ * This example program only expects one single item of that
-+ * type, remembers the struct kdbus_vec member of the item
-+ * when it sees it, and bails out if there is more than one
-+ * of them.
-+ */
-+ if (item->type == KDBUS_ITEM_PAYLOAD_OFF) {
-+ if (vec) {
-+ r = err_r(-EEXIST,
-+ "message with multiple vecs");
-+ break;
-+ }
-+ vec = &item->vec;
-+ if (vec->size != 1) {
-+ r = err_r(-EINVAL, "invalid message size");
-+ break;
-+ }
-+
-+ /*
-+ * MEMFDs are transported as items of type PAYLOAD_MEMFD.
-+ * If such an item is attached, a new file descriptor was
-+ * installed into the task when KDBUS_CMD_RECV was called, and
-+ * its number is stored in item->memfd.fd.
-+ * Implementers *must* handle this item type and close the
-+ * file descriptor when no longer needed in order to prevent
-+ * file descriptor exhaustion. This example program just bails
-+ * out with an error in this case, as memfds are not expected
-+ * in this context.
-+ */
-+ } else if (item->type == KDBUS_ITEM_PAYLOAD_MEMFD) {
-+ r = err_r(-EINVAL, "message with memfd");
-+ break;
-+ }
-+ }
-+ if (r < 0)
-+ goto exit;
-+ if (!vec) {
-+ r = err_r(-EINVAL, "empty message");
-+ goto exit;
-+ }
-+
-+ switch (*((const uint8_t *)msg + vec->offset)) {
-+ case 'r': {
-+ r = master_reply(m, msg);
-+ break;
-+ }
-+ default:
-+ r = err_r(-EINVAL, "invalid message type");
-+ break;
-+ }
-+
-+exit:
-+ /*
-+ * We are done with the memory slice that was given to us through
-+ * recv.msg.offset. Tell the kernel it can use it for other content
-+ * in the future. See kdbus.pool(7).
-+ */
-+ bus_poool_free_slice(m->bus, recv.msg.offset);
-+ return r;
-+}
-+
-+static int master_reply(struct master *m, const struct kdbus_msg *msg)
-+{
-+ struct kdbus_cmd_send cmd;
-+ struct kdbus_item *item;
-+ struct kdbus_msg *reply;
-+ size_t size, status, p[2];
-+ int r;
-+
-+ /*
-+ * This functions sends a message over kdbus. To do this, it uses the
-+ * KDBUS_CMD_SEND ioctl, which takes a command struct argument of type
-+ * 'struct kdbus_cmd_send'. This struct stores a pointer to the actual
-+ * message to send. See kdbus.message(7).
-+ */
-+ p[0] = m->prime->done;
-+ p[1] = prime_done(m->prime) ? 0 : PRIME_STEPS;
-+
-+ size = sizeof(*reply);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+
-+ /* Prepare the message to send */
-+ reply = alloca(size);
-+ memset(reply, 0, size);
-+ reply->size = size;
-+
-+ /* Each message has a cookie that can be used to send replies */
-+ reply->cookie = 1;
-+
-+ /* The payload_type is arbitrary, but it must be non-zero */
-+ reply->payload_type = 0xdeadbeef;
-+
-+ /*
-+ * We are sending a reply. Let the kernel know the cookie of the
-+ * message we are replying to.
-+ */
-+ reply->cookie_reply = msg->cookie;
-+
-+ /*
-+ * Messages can either be directed to a well-known name (stored as
-+ * string) or to a unique name (stored as number). This example does
-+ * the latter. If the message would be directed to a well-known name
-+ * instead, the message's dst_id field would be set to
-+ * KDBUS_DST_ID_NAME, and the name would be attaches in an item of type
-+ * KDBUS_ITEM_DST_NAME. See below for an example, and also refer to
-+ * kdbus.message(7).
-+ */
-+ reply->dst_id = msg->src_id;
-+
-+ /* Our message has exactly one item to store its payload */
-+ item = reply->items;
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t)p;
-+ item->vec.size = sizeof(p);
-+
-+ /*
-+ * Now prepare the command struct, and reference the message we want
-+ * to send.
-+ */
-+ memset(&cmd, 0, sizeof(cmd));
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)reply;
-+
-+ /*
-+ * Finally, employ the command on the connection owner
-+ * file descriptor.
-+ */
-+ r = kdbus_cmd_send(m->bus->fd, &cmd);
-+ if (r < 0)
-+ return err_r(r, "cannot send reply");
-+
-+ if (p[1]) {
-+ prime_consume(m->prime, p[1]);
-+ status = m->prime->done * 10000 / m->prime->max;
-+ if (status != m->prime->status) {
-+ m->prime->status = status;
-+ fprintf(stderr, "status: %7.3lf%%\n",
-+ (double)status / 100);
-+ }
-+ }
-+
-+ return 0;
-+}
-+
-+static int master_waitpid(struct master *m)
-+{
-+ pid_t pid;
-+ int r;
-+
-+ while ((pid = waitpid(-1, &r, WNOHANG)) > 0) {
-+ if (m->n_workers > 0)
-+ --m->n_workers;
-+ if (!WIFEXITED(r))
-+ r = err_r(-EINVAL, "child died unexpectedly");
-+ else if (WEXITSTATUS(r) != 0)
-+ r = err_r(-WEXITSTATUS(r), "child failed");
-+ }
-+
-+ return r;
-+}
-+
-+static int master_spawn(struct master *m)
-+{
-+ struct child *c = NULL;
-+ struct prime *p = NULL;
-+ pid_t pid;
-+ int r;
-+
-+ /* Spawn off one child and call child_run() inside it */
-+
-+ pid = fork();
-+ if (pid < 0)
-+ return err("cannot fork");
-+ if (pid > 0) {
-+ /* parent */
-+ ++m->n_workers;
-+ return 0;
-+ }
-+
-+ /* child */
-+
-+ p = m->prime;
-+ m->prime = NULL;
-+ master_free(m);
-+
-+ r = child_new(&c, p);
-+ if (r < 0)
-+ goto exit;
-+
-+ r = child_run(c);
-+
-+exit:
-+ child_free(c);
-+ exit(abs(r));
-+}
-+
-+static int child_new(struct child **out, struct prime *p)
-+{
-+ struct child *c;
-+ int r;
-+
-+ c = calloc(1, sizeof(*c));
-+ if (!c)
-+ return err("cannot allocate child");
-+
-+ c->prime = p;
-+
-+ /*
-+ * Open a connection to the bus and require each received message to
-+ * carry a list of the well-known names the sendind connection currently
-+ * owns. The current UID is needed in order to determine the name of the
-+ * bus node to connect to.
-+ */
-+ r = bus_open_connection(&c->bus, getuid(),
-+ arg_busname, KDBUS_ATTACH_NAMES);
-+ if (r < 0)
-+ goto error;
-+
-+ /*
-+ * Install a kdbus match so the child's connection gets notified when
-+ * the master loses its well-known name.
-+ */
-+ r = bus_install_name_loss_match(c->bus, arg_master);
-+ if (r < 0)
-+ goto error;
-+
-+ *out = c;
-+ return 0;
-+
-+error:
-+ child_free(c);
-+ return r;
-+}
-+
-+static void child_free(struct child *c)
-+{
-+ if (!c)
-+ return;
-+
-+ bus_close_connection(c->bus);
-+ prime_free(c->prime);
-+ free(c);
-+}
-+
-+static int child_run(struct child *c)
-+{
-+ struct kdbus_cmd_send cmd;
-+ struct kdbus_item *item;
-+ struct kdbus_vec *vec = NULL;
-+ struct kdbus_msg *msg;
-+ struct timespec spec;
-+ size_t n, steps, size;
-+ int r = 0;
-+
-+ /*
-+ * Let's send a message to the master and ask for work. To do this,
-+ * we use the KDBUS_CMD_SEND ioctl, which takes an argument of type
-+ * 'struct kdbus_cmd_send'. This struct stores a pointer to the actual
-+ * message to send. See kdbus.message(7).
-+ */
-+ size = sizeof(*msg);
-+ size += KDBUS_ITEM_SIZE(strlen(arg_master) + 1);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+
-+ msg = alloca(size);
-+ memset(msg, 0, size);
-+ msg->size = size;
-+
-+ /*
-+ * Tell the kernel that we expect a reply to this message. This means
-+ * that
-+ *
-+ * a) The remote peer will gain temporary permission to talk to us
-+ * even if it would not be allowed to normally.
-+ *
-+ * b) A timeout value is required.
-+ *
-+ * For asynchronous send commands, if no reply is received, we will
-+ * get a kernel notification with an item of type
-+ * KDBUS_ITEM_REPLY_TIMEOUT attached.
-+ *
-+ * For synchronous send commands (which this example does), the
-+ * ioctl will block until a reply is received or the timeout is
-+ * exceeded.
-+ */
-+ msg->flags = KDBUS_MSG_EXPECT_REPLY;
-+
-+ /* Set our cookie. Replies must use this cookie to send their reply. */
-+ msg->cookie = 1;
-+
-+ /* The payload_type is arbitrary, but it must be non-zero */
-+ msg->payload_type = 0xdeadbeef;
-+
-+ /*
-+ * We are sending our message to the current owner of a well-known
-+ * name. This makes an item of type KDBUS_ITEM_DST_NAME mandatory.
-+ */
-+ msg->dst_id = KDBUS_DST_ID_NAME;
-+
-+ /*
-+ * Set the reply timeout to 5 seconds. Timeouts are always set in
-+ * absolute timestamps, based con CLOCK_MONOTONIC. See kdbus.message(7).
-+ */
-+ clock_gettime(CLOCK_MONOTONIC_COARSE, &spec);
-+ msg->timeout_ns += (5 + spec.tv_sec) * 1000ULL * 1000ULL * 1000ULL;
-+ msg->timeout_ns += spec.tv_nsec;
-+
-+ /*
-+ * Fill the appended items. First, set the well-known name of the
-+ * destination we want to talk to.
-+ */
-+ item = msg->items;
-+ item->type = KDBUS_ITEM_DST_NAME;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(arg_master) + 1;
-+ strcpy(item->str, arg_master);
-+
-+ /*
-+ * The 2nd item contains a vector to memory we want to send. It
-+ * can be content of any type. In our case, we're sending a one-byte
-+ * string only. The memory referenced by this item will be copied into
-+ * the pool of the receiver connection, and does not need to be valid
-+ * after the command is employed.
-+ */
-+ item = KDBUS_ITEM_NEXT(item);
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t)"r";
-+ item->vec.size = 1;
-+
-+ /* Set up the command struct and reference the message we prepared */
-+ memset(&cmd, 0, sizeof(cmd));
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ /*
-+ * The send commands knows a mode in which it will block until a
-+ * reply to a message is received. This example uses that mode.
-+ * The pool offset to the received reply will be stored in the command
-+ * struct after the send command returned. See below.
-+ */
-+ cmd.flags = KDBUS_SEND_SYNC_REPLY;
-+
-+ /*
-+ * Finally, employ the command on the connection owner
-+ * file descriptor.
-+ */
-+ r = kdbus_cmd_send(c->bus->fd, &cmd);
-+ if (r == -ESRCH || r == -EPIPE || r == -ECONNRESET)
-+ return 0;
-+ if (r < 0)
-+ return err_r(r, "cannot send request to master");
-+
-+ /*
-+ * The command was sent with the KDBUS_SEND_SYNC_REPLY flag set,
-+ * and returned successfully, which means that cmd.reply.offset now
-+ * points to a message inside our connection's pool where the reply
-+ * is found. This is equivalent to receiving the reply with
-+ * KDBUS_CMD_RECV, but it doesn't require waiting for the reply with
-+ * poll() and also saves the ioctl to receive the message.
-+ */
-+ msg = (void *)(c->bus->pool + cmd.reply.offset);
-+
-+ /*
-+ * A messages describes its actual payload in an array of items.
-+ * KDBUS_FOREACH() is a simple iterator that walks such an array.
-+ * struct kdbus_msg has a field to denote its total size, which is
-+ * needed to determine the number of items in the array.
-+ */
-+ KDBUS_FOREACH(item, msg->items,
-+ msg->size - offsetof(struct kdbus_msg, items)) {
-+ /*
-+ * An item of type PAYLOAD_OFF describes in-line memory
-+ * stored in the pool at a described offset. That offset is
-+ * relative to the start address of the message header.
-+ * This example program only expects one single item of that
-+ * type, remembers the struct kdbus_vec member of the item
-+ * when it sees it, and bails out if there is more than one
-+ * of them.
-+ */
-+ if (item->type == KDBUS_ITEM_PAYLOAD_OFF) {
-+ if (vec) {
-+ r = err_r(-EEXIST,
-+ "message with multiple vecs");
-+ break;
-+ }
-+ vec = &item->vec;
-+ if (vec->size != 2 * sizeof(size_t)) {
-+ r = err_r(-EINVAL, "invalid message size");
-+ break;
-+ }
-+ /*
-+ * MEMFDs are transported as items of type PAYLOAD_MEMFD.
-+ * If such an item is attached, a new file descriptor was
-+ * installed into the task when KDBUS_CMD_RECV was called, and
-+ * its number is stored in item->memfd.fd.
-+ * Implementers *must* handle this item type close the
-+ * file descriptor when no longer needed in order to prevent
-+ * file descriptor exhaustion. This example program just bails
-+ * out with an error in this case, as memfds are not expected
-+ * in this context.
-+ */
-+ } else if (item->type == KDBUS_ITEM_PAYLOAD_MEMFD) {
-+ r = err_r(-EINVAL, "message with memfd");
-+ break;
-+ }
-+ }
-+ if (r < 0)
-+ goto exit;
-+ if (!vec) {
-+ r = err_r(-EINVAL, "empty message");
-+ goto exit;
-+ }
-+
-+ n = ((size_t *)((const uint8_t *)msg + vec->offset))[0];
-+ steps = ((size_t *)((const uint8_t *)msg + vec->offset))[1];
-+
-+ while (steps-- > 0) {
-+ ++n;
-+ r = prime_run(c->prime, c->bus, n);
-+ if (r < 0)
-+ break;
-+ r = bus_poll(c->bus);
-+ if (r != 0) {
-+ r = r < 0 ? r : -EINTR;
-+ break;
-+ }
-+ }
-+
-+exit:
-+ /*
-+ * We are done with the memory slice that was given to us through
-+ * cmd.reply.offset. Tell the kernel it can use it for other content
-+ * in the future. See kdbus.pool(7).
-+ */
-+ bus_poool_free_slice(c->bus, cmd.reply.offset);
-+ return r;
-+}
-+
-+/*
-+ * Prime Computation
-+ *
-+ */
-+
-+static int prime_new(struct prime **out)
-+{
-+ struct prime *p;
-+ int r;
-+
-+ p = calloc(1, sizeof(*p));
-+ if (!p)
-+ return err("cannot allocate prime memory");
-+
-+ p->fd = -1;
-+ p->area = MAP_FAILED;
-+ p->max = MAX_PRIMES;
-+
-+ /*
-+ * Prepare and map a memfd to store the bit-fields for the number
-+ * ranges we want to perform the prime detection on.
-+ */
-+ p->fd = syscall(__NR_memfd_create, "prime-area", MFD_CLOEXEC);
-+ if (p->fd < 0) {
-+ r = err("cannot create memfd");
-+ goto error;
-+ }
-+
-+ r = ftruncate(p->fd, p->max / 8 + 1);
-+ if (r < 0) {
-+ r = err("cannot ftruncate area");
-+ goto error;
-+ }
-+
-+ p->area = mmap(NULL, p->max / 8 + 1, PROT_READ | PROT_WRITE,
-+ MAP_SHARED, p->fd, 0);
-+ if (p->area == MAP_FAILED) {
-+ r = err("cannot mmap memfd");
-+ goto error;
-+ }
-+
-+ *out = p;
-+ return 0;
-+
-+error:
-+ prime_free(p);
-+ return r;
-+}
-+
-+static void prime_free(struct prime *p)
-+{
-+ if (!p)
-+ return;
-+
-+ if (p->area != MAP_FAILED)
-+ munmap(p->area, p->max / 8 + 1);
-+ if (p->fd >= 0)
-+ close(p->fd);
-+ free(p);
-+}
-+
-+static bool prime_done(struct prime *p)
-+{
-+ return p->done >= p->max;
-+}
-+
-+static void prime_consume(struct prime *p, size_t amount)
-+{
-+ p->done += amount;
-+}
-+
-+static int prime_run(struct prime *p, struct bus *cancel, size_t number)
-+{
-+ size_t i, n = 0;
-+ int r;
-+
-+ if (number < 2 || number > 65535)
-+ return 0;
-+
-+ for (i = number * number;
-+ i < p->max && i > number;
-+ i += number) {
-+ p->area[i / 8] |= 1 << (i % 8);
-+
-+ if (!(++n % (1 << 20))) {
-+ r = bus_poll(cancel);
-+ if (r != 0)
-+ return r < 0 ? r : -EINTR;
-+ }
-+ }
-+
-+ return 0;
-+}
-+
-+static void prime_print(struct prime *p)
-+{
-+ size_t i, l = 0;
-+
-+ fprintf(stderr, "PRIMES:");
-+ for (i = 0; i < p->max; ++i) {
-+ if (!(p->area[i / 8] & (1 << (i % 8))))
-+ fprintf(stderr, "%c%7zu", !(l++ % 16) ? '\n' : ' ', i);
-+ }
-+ fprintf(stderr, "\nEND\n");
-+}
-+
-+static int bus_open_connection(struct bus **out, uid_t uid, const char *name,
-+ uint64_t recv_flags)
-+{
-+ struct kdbus_cmd_hello hello;
-+ char path[128];
-+ struct bus *b;
-+ int r;
-+
-+ /*
-+ * The 'bus' object is our representation of a kdbus connection which
-+ * stores two details: the connection owner file descriptor, and the
-+ * mmap()ed memory of its associated pool. See kdbus.connection(7) and
-+ * kdbus.pool(7).
-+ */
-+ b = calloc(1, sizeof(*b));
-+ if (!b)
-+ return err("cannot allocate bus memory");
-+
-+ b->fd = -1;
-+ b->pool = MAP_FAILED;
-+
-+ /* Compute the name of the bus node to connect to. */
-+ snprintf(path, sizeof(path), "/sys/fs/%s/%lu-%s/bus",
-+ arg_modname, (unsigned long)uid, name);
-+ b->fd = open(path, O_RDWR | O_CLOEXEC);
-+ if (b->fd < 0) {
-+ r = err("cannot open bus");
-+ goto error;
-+ }
-+
-+ /*
-+ * To make a connection to the bus, the KDBUS_CMD_HELLO ioctl is used.
-+ * It takes an argument of type 'struct kdbus_cmd_hello'.
-+ */
-+ memset(&hello, 0, sizeof(hello));
-+ hello.size = sizeof(hello);
-+
-+ /*
-+ * Specify a mask of metadata attach flags, describing metadata items
-+ * that this new connection allows to be sent.
-+ */
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+
-+ /*
-+ * Specify a mask of metadata attach flags, describing metadata items
-+ * that this new connection wants to be receive along with each message.
-+ */
-+ hello.attach_flags_recv = recv_flags;
-+
-+ /*
-+ * A connection may choose the size of its pool, but the number has to
-+ * comply with two rules: a) it must be greater than 0, and b) it must
-+ * be a mulitple of PAGE_SIZE. See kdbus.pool(7).
-+ */
-+ hello.pool_size = POOL_SIZE;
-+
-+ /*
-+ * Now employ the command on the file descriptor opened above.
-+ * This command will turn the file descriptor into a connection-owner
-+ * file descriptor that controls the life-time of the connection; once
-+ * it's closed, the connection is shut down.
-+ */
-+ r = kdbus_cmd_hello(b->fd, &hello);
-+ if (r < 0) {
-+ err_r(r, "HELLO failed");
-+ goto error;
-+ }
-+
-+ bus_poool_free_slice(b, hello.offset);
-+
-+ /*
-+ * Map the pool of the connection. Its size has been set in the
-+ * command struct above. See kdbus.pool(7).
-+ */
-+ b->pool = mmap(NULL, POOL_SIZE, PROT_READ, MAP_SHARED, b->fd, 0);
-+ if (b->pool == MAP_FAILED) {
-+ r = err("cannot mmap pool");
-+ goto error;
-+ }
-+
-+ *out = b;
-+ return 0;
-+
-+error:
-+ bus_close_connection(b);
-+ return r;
-+}
-+
-+static void bus_close_connection(struct bus *b)
-+{
-+ if (!b)
-+ return;
-+
-+ /*
-+ * A bus connection is closed by simply calling close() on the
-+ * connection owner file descriptor. The unique name and all owned
-+ * well-known names of the conneciton will disappear.
-+ * See kdbus.connection(7).
-+ */
-+ if (b->pool != MAP_FAILED)
-+ munmap(b->pool, POOL_SIZE);
-+ if (b->fd >= 0)
-+ close(b->fd);
-+ free(b);
-+}
-+
-+static void bus_poool_free_slice(struct bus *b, uint64_t offset)
-+{
-+ struct kdbus_cmd_free cmd = {
-+ .size = sizeof(cmd),
-+ .offset = offset,
-+ };
-+ int r;
-+
-+ /*
-+ * Once we're done with a piece of pool memory that was returned
-+ * by a command, we have to call the KDBUS_CMD_FREE ioctl on it so it
-+ * can be reused. The command takes an argument of type
-+ * 'struct kdbus_cmd_free', in which the pool offset of the slice to
-+ * free is stored. The ioctl is employed on the connection owner
-+ * file descriptor. See kdbus.pool(7),
-+ */
-+ r = kdbus_cmd_free(b->fd, &cmd);
-+ if (r < 0)
-+ err_r(r, "cannot free pool slice");
-+}
-+
-+static int bus_acquire_name(struct bus *b, const char *name)
-+{
-+ struct kdbus_item *item;
-+ struct kdbus_cmd *cmd;
-+ size_t size;
-+ int r;
-+
-+ /*
-+ * This function acquires a well-known name on the bus through the
-+ * KDBUS_CMD_NAME_ACQUIRE ioctl. This ioctl takes an argument of type
-+ * 'struct kdbus_cmd', which is assembled below. See kdbus.name(7).
-+ */
-+ size = sizeof(*cmd);
-+ size += KDBUS_ITEM_SIZE(strlen(name) + 1);
-+
-+ cmd = alloca(size);
-+ memset(cmd, 0, size);
-+ cmd->size = size;
-+
-+ /*
-+ * The command requires an item of type KDBUS_ITEM_NAME, and its
-+ * content must be a valid bus name.
-+ */
-+ item = cmd->items;
-+ item->type = KDBUS_ITEM_NAME;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
-+ strcpy(item->str, name);
-+
-+ /*
-+ * Employ the command on the connection owner file descriptor.
-+ */
-+ r = kdbus_cmd_name_acquire(b->fd, cmd);
-+ if (r < 0)
-+ return err_r(r, "cannot acquire name");
-+
-+ return 0;
-+}
-+
-+static int bus_install_name_loss_match(struct bus *b, const char *name)
-+{
-+ struct kdbus_cmd_match *match;
-+ struct kdbus_item *item;
-+ size_t size;
-+ int r;
-+
-+ /*
-+ * In order to install a match for signal messages, we have to
-+ * assemble a 'struct kdbus_cmd_match' and use it along with the
-+ * KDBUS_CMD_MATCH_ADD ioctl. See kdbus.match(7).
-+ */
-+ size = sizeof(*match);
-+ size += KDBUS_ITEM_SIZE(sizeof(item->name_change) + strlen(name) + 1);
-+
-+ match = alloca(size);
-+ memset(match, 0, size);
-+ match->size = size;
-+
-+ /*
-+ * A match is comprised of many 'rules', each of which describes a
-+ * mandatory detail of the message. All rules of a match must be
-+ * satified in order to make a message pass.
-+ */
-+ item = match->items;
-+
-+ /*
-+ * In this case, we're interested in notifications that inform us
-+ * about a well-known name being removed from the bus.
-+ */
-+ item->type = KDBUS_ITEM_NAME_REMOVE;
-+ item->size = KDBUS_ITEM_HEADER_SIZE +
-+ sizeof(item->name_change) + strlen(name) + 1;
-+
-+ /*
-+ * We could limit the match further and require a specific unique-ID
-+ * to be the new or the old owner of the name. In this case, however,
-+ * we don't, and allow 'any' id.
-+ */
-+ item->name_change.old_id.id = KDBUS_MATCH_ID_ANY;
-+ item->name_change.new_id.id = KDBUS_MATCH_ID_ANY;
-+
-+ /* Copy in the well-known name we're interested in */
-+ strcpy(item->name_change.name, name);
-+
-+ /*
-+ * Add the match through the KDBUS_CMD_MATCH_ADD ioctl, employed on
-+ * the connection owner fd.
-+ */
-+ r = kdbus_cmd_match_add(b->fd, match);
-+ if (r < 0)
-+ return err_r(r, "cannot add match");
-+
-+ return 0;
-+}
-+
-+static int bus_poll(struct bus *b)
-+{
-+ struct pollfd fds[1] = {};
-+ int r;
-+
-+ /*
-+ * A connection endpoint supports poll() and will wake-up the
-+ * task with POLLIN set once a message has arrived.
-+ */
-+ fds[0].fd = b->fd;
-+ fds[0].events = POLLIN;
-+ r = poll(fds, sizeof(fds) / sizeof(*fds), 0);
-+ if (r < 0)
-+ return err("cannot poll bus");
-+ return !!(fds[0].revents & POLLIN);
-+}
-+
-+static int bus_make(uid_t uid, const char *name)
-+{
-+ struct kdbus_item *item;
-+ struct kdbus_cmd *make;
-+ char path[128], busname[128];
-+ size_t size;
-+ int r, fd;
-+
-+ /*
-+ * Compute the full path to the 'control' node. 'arg_modname' may be
-+ * set to a different value than 'kdbus' for development purposes.
-+ * The 'control' node is the primary entry point to kdbus that must be
-+ * used in order to create a bus. See kdbus(7) and kdbus.bus(7).
-+ */
-+ snprintf(path, sizeof(path), "/sys/fs/%s/control", arg_modname);
-+
-+ /*
-+ * Compute the bus name. A valid bus name must always be prefixed with
-+ * the EUID of the currently running process in order to avoid name
-+ * conflicts. See kdbus.bus(7).
-+ */
-+ snprintf(busname, sizeof(busname), "%lu-%s", (unsigned long)uid, name);
-+
-+ fd = open(path, O_RDWR | O_CLOEXEC);
-+ if (fd < 0)
-+ return err("cannot open control file");
-+
-+ /*
-+ * The KDBUS_CMD_BUS_MAKE ioctl takes an argument of type
-+ * 'struct kdbus_cmd', and expects at least two items attached to
-+ * it: one to decribe the bloom parameters to be propagated to
-+ * connections of the bus, and the name of the bus that was computed
-+ * above. Assemble this struct now, and fill it with values.
-+ */
-+ size = sizeof(*make);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_parameter));
-+ size += KDBUS_ITEM_SIZE(strlen(busname) + 1);
-+
-+ make = alloca(size);
-+ memset(make, 0, size);
-+ make->size = size;
-+
-+ /*
-+ * Each item has a 'type' and 'size' field, and must be stored at an
-+ * 8-byte aligned address. The KDBUS_ITEM_NEXT macro is used to advance
-+ * the pointer. See kdbus.item(7) for more details.
-+ */
-+ item = make->items;
-+ item->type = KDBUS_ITEM_BLOOM_PARAMETER;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(item->bloom_parameter);
-+ item->bloom_parameter.size = 8;
-+ item->bloom_parameter.n_hash = 1;
-+
-+ /* The name of the new bus is stored in the next item. */
-+ item = KDBUS_ITEM_NEXT(item);
-+ item->type = KDBUS_ITEM_MAKE_NAME;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(busname) + 1;
-+ strcpy(item->str, busname);
-+
-+ /*
-+ * Now create the bus via the KDBUS_CMD_BUS_MAKE ioctl and return the
-+ * fd that was used back to the caller of this function. This fd is now
-+ * called a 'bus owner file descriptor', and it controls the life-time
-+ * of the newly created bus; once the file descriptor is closed, the
-+ * bus goes away, and all connections are shut down. See kdbus.bus(7).
-+ */
-+ r = kdbus_cmd_bus_make(fd, make);
-+ if (r < 0) {
-+ err_r(r, "cannot make bus");
-+ close(fd);
-+ return r;
-+ }
-+
-+ return fd;
-+}
-+
-+#else
-+
-+#warning "Skipping compilation due to unsupported libc version"
-+
-+int main(int argc, char **argv)
-+{
-+ fprintf(stderr,
-+ "Compilation of %s was skipped due to unsupported libc.\n",
-+ argv[0]);
-+
-+ return EXIT_FAILURE;
-+}
-+
-+#endif /* libc sanity check */
-diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
-index 95abddc..b57100c 100644
---- a/tools/testing/selftests/Makefile
-+++ b/tools/testing/selftests/Makefile
-@@ -5,6 +5,7 @@ TARGETS += exec
- TARGETS += firmware
- TARGETS += ftrace
- TARGETS += kcmp
-+TARGETS += kdbus
- TARGETS += memfd
- TARGETS += memory-hotplug
- TARGETS += mount
-diff --git a/tools/testing/selftests/kdbus/.gitignore b/tools/testing/selftests/kdbus/.gitignore
-new file mode 100644
-index 0000000..d3ef42f
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/.gitignore
-@@ -0,0 +1 @@
-+kdbus-test
-diff --git a/tools/testing/selftests/kdbus/Makefile b/tools/testing/selftests/kdbus/Makefile
-new file mode 100644
-index 0000000..8f36cb5
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/Makefile
-@@ -0,0 +1,49 @@
-+CFLAGS += -I../../../../usr/include/
-+CFLAGS += -I../../../../samples/kdbus/
-+CFLAGS += -I../../../../include/uapi/
-+CFLAGS += -std=gnu99
-+CFLAGS += -DKBUILD_MODNAME=\"kdbus\" -D_GNU_SOURCE
-+LDLIBS = -pthread -lcap -lm
-+
-+OBJS= \
-+ kdbus-enum.o \
-+ kdbus-util.o \
-+ kdbus-test.o \
-+ kdbus-test.o \
-+ test-activator.o \
-+ test-benchmark.o \
-+ test-bus.o \
-+ test-chat.o \
-+ test-connection.o \
-+ test-daemon.o \
-+ test-endpoint.o \
-+ test-fd.o \
-+ test-free.o \
-+ test-match.o \
-+ test-message.o \
-+ test-metadata-ns.o \
-+ test-monitor.o \
-+ test-names.o \
-+ test-policy.o \
-+ test-policy-ns.o \
-+ test-policy-priv.o \
-+ test-sync.o \
-+ test-timeout.o
-+
-+all: kdbus-test
-+
-+include ../lib.mk
-+
-+%.o: %.c kdbus-enum.h kdbus-test.h kdbus-util.h
-+ $(CC) $(CFLAGS) -c $< -o $@
-+
-+kdbus-test: $(OBJS)
-+ $(CC) $(CFLAGS) $^ $(LDLIBS) -o $@
-+
-+TEST_PROGS := kdbus-test
-+
-+run_tests:
-+ ./kdbus-test --tap
-+
-+clean:
-+ rm -f *.o kdbus-test
-diff --git a/tools/testing/selftests/kdbus/kdbus-enum.c b/tools/testing/selftests/kdbus/kdbus-enum.c
-new file mode 100644
-index 0000000..4f1e579
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/kdbus-enum.c
-@@ -0,0 +1,94 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+struct kdbus_enum_table {
-+ long long id;
-+ const char *name;
-+};
-+
-+#define TABLE(what) static struct kdbus_enum_table kdbus_table_##what[]
-+#define ENUM(_id) { .id = _id, .name = STRINGIFY(_id) }
-+#define LOOKUP(what) \
-+ const char *enum_##what(long long id) \
-+ { \
-+ for (size_t i = 0; i < ELEMENTSOF(kdbus_table_##what); i++) \
-+ if (id == kdbus_table_##what[i].id) \
-+ return kdbus_table_##what[i].name; \
-+ return "UNKNOWN"; \
-+ }
-+
-+TABLE(CMD) = {
-+ ENUM(KDBUS_CMD_BUS_MAKE),
-+ ENUM(KDBUS_CMD_ENDPOINT_MAKE),
-+ ENUM(KDBUS_CMD_HELLO),
-+ ENUM(KDBUS_CMD_SEND),
-+ ENUM(KDBUS_CMD_RECV),
-+ ENUM(KDBUS_CMD_LIST),
-+ ENUM(KDBUS_CMD_NAME_RELEASE),
-+ ENUM(KDBUS_CMD_CONN_INFO),
-+ ENUM(KDBUS_CMD_MATCH_ADD),
-+ ENUM(KDBUS_CMD_MATCH_REMOVE),
-+};
-+LOOKUP(CMD);
-+
-+TABLE(MSG) = {
-+ ENUM(_KDBUS_ITEM_NULL),
-+ ENUM(KDBUS_ITEM_PAYLOAD_VEC),
-+ ENUM(KDBUS_ITEM_PAYLOAD_OFF),
-+ ENUM(KDBUS_ITEM_PAYLOAD_MEMFD),
-+ ENUM(KDBUS_ITEM_FDS),
-+ ENUM(KDBUS_ITEM_BLOOM_PARAMETER),
-+ ENUM(KDBUS_ITEM_BLOOM_FILTER),
-+ ENUM(KDBUS_ITEM_DST_NAME),
-+ ENUM(KDBUS_ITEM_MAKE_NAME),
-+ ENUM(KDBUS_ITEM_ATTACH_FLAGS_SEND),
-+ ENUM(KDBUS_ITEM_ATTACH_FLAGS_RECV),
-+ ENUM(KDBUS_ITEM_ID),
-+ ENUM(KDBUS_ITEM_NAME),
-+ ENUM(KDBUS_ITEM_TIMESTAMP),
-+ ENUM(KDBUS_ITEM_CREDS),
-+ ENUM(KDBUS_ITEM_PIDS),
-+ ENUM(KDBUS_ITEM_AUXGROUPS),
-+ ENUM(KDBUS_ITEM_OWNED_NAME),
-+ ENUM(KDBUS_ITEM_TID_COMM),
-+ ENUM(KDBUS_ITEM_PID_COMM),
-+ ENUM(KDBUS_ITEM_EXE),
-+ ENUM(KDBUS_ITEM_CMDLINE),
-+ ENUM(KDBUS_ITEM_CGROUP),
-+ ENUM(KDBUS_ITEM_CAPS),
-+ ENUM(KDBUS_ITEM_SECLABEL),
-+ ENUM(KDBUS_ITEM_AUDIT),
-+ ENUM(KDBUS_ITEM_CONN_DESCRIPTION),
-+ ENUM(KDBUS_ITEM_NAME_ADD),
-+ ENUM(KDBUS_ITEM_NAME_REMOVE),
-+ ENUM(KDBUS_ITEM_NAME_CHANGE),
-+ ENUM(KDBUS_ITEM_ID_ADD),
-+ ENUM(KDBUS_ITEM_ID_REMOVE),
-+ ENUM(KDBUS_ITEM_REPLY_TIMEOUT),
-+ ENUM(KDBUS_ITEM_REPLY_DEAD),
-+};
-+LOOKUP(MSG);
-+
-+TABLE(PAYLOAD) = {
-+ ENUM(KDBUS_PAYLOAD_KERNEL),
-+ ENUM(KDBUS_PAYLOAD_DBUS),
-+};
-+LOOKUP(PAYLOAD);
-diff --git a/tools/testing/selftests/kdbus/kdbus-enum.h b/tools/testing/selftests/kdbus/kdbus-enum.h
-new file mode 100644
-index 0000000..ed28cca
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/kdbus-enum.h
-@@ -0,0 +1,15 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#pragma once
-+
-+const char *enum_CMD(long long id);
-+const char *enum_MSG(long long id);
-+const char *enum_MATCH(long long id);
-+const char *enum_PAYLOAD(long long id);
-diff --git a/tools/testing/selftests/kdbus/kdbus-test.c b/tools/testing/selftests/kdbus/kdbus-test.c
-new file mode 100644
-index 0000000..db57381
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/kdbus-test.c
-@@ -0,0 +1,905 @@
-+#include <errno.h>
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <time.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <assert.h>
-+#include <getopt.h>
-+#include <stdbool.h>
-+#include <signal.h>
-+#include <sys/mount.h>
-+#include <sys/prctl.h>
-+#include <sys/wait.h>
-+#include <sys/syscall.h>
-+#include <sys/eventfd.h>
-+#include <linux/sched.h>
-+
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+enum {
-+ TEST_CREATE_BUS = 1 << 0,
-+ TEST_CREATE_CONN = 1 << 1,
-+};
-+
-+struct kdbus_test {
-+ const char *name;
-+ const char *desc;
-+ int (*func)(struct kdbus_test_env *env);
-+ unsigned int flags;
-+};
-+
-+struct kdbus_test_args {
-+ bool mntns;
-+ bool pidns;
-+ bool userns;
-+ char *uid_map;
-+ char *gid_map;
-+ int loop;
-+ int wait;
-+ int fork;
-+ int tap_output;
-+ char *module;
-+ char *root;
-+ char *test;
-+ char *busname;
-+};
-+
-+static const struct kdbus_test tests[] = {
-+ {
-+ .name = "bus-make",
-+ .desc = "bus make functions",
-+ .func = kdbus_test_bus_make,
-+ .flags = 0,
-+ },
-+ {
-+ .name = "hello",
-+ .desc = "the HELLO command",
-+ .func = kdbus_test_hello,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "byebye",
-+ .desc = "the BYEBYE command",
-+ .func = kdbus_test_byebye,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "chat",
-+ .desc = "a chat pattern",
-+ .func = kdbus_test_chat,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "daemon",
-+ .desc = "a simple daemon",
-+ .func = kdbus_test_daemon,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "fd-passing",
-+ .desc = "file descriptor passing",
-+ .func = kdbus_test_fd_passing,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "endpoint",
-+ .desc = "custom endpoint",
-+ .func = kdbus_test_custom_endpoint,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "monitor",
-+ .desc = "monitor functionality",
-+ .func = kdbus_test_monitor,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "name-basics",
-+ .desc = "basic name registry functions",
-+ .func = kdbus_test_name_basic,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "name-conflict",
-+ .desc = "name registry conflict details",
-+ .func = kdbus_test_name_conflict,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "name-queue",
-+ .desc = "queuing of names",
-+ .func = kdbus_test_name_queue,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "name-takeover",
-+ .desc = "takeover of names",
-+ .func = kdbus_test_name_takeover,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "message-basic",
-+ .desc = "basic message handling",
-+ .func = kdbus_test_message_basic,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "message-prio",
-+ .desc = "handling of messages with priority",
-+ .func = kdbus_test_message_prio,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "message-quota",
-+ .desc = "message quotas are enforced",
-+ .func = kdbus_test_message_quota,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "memory-access",
-+ .desc = "memory access",
-+ .func = kdbus_test_memory_access,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "timeout",
-+ .desc = "timeout",
-+ .func = kdbus_test_timeout,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "sync-byebye",
-+ .desc = "synchronous replies vs. BYEBYE",
-+ .func = kdbus_test_sync_byebye,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "sync-reply",
-+ .desc = "synchronous replies",
-+ .func = kdbus_test_sync_reply,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "message-free",
-+ .desc = "freeing of memory",
-+ .func = kdbus_test_free,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "connection-info",
-+ .desc = "retrieving connection information",
-+ .func = kdbus_test_conn_info,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "connection-update",
-+ .desc = "updating connection information",
-+ .func = kdbus_test_conn_update,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "writable-pool",
-+ .desc = "verifying pools are never writable",
-+ .func = kdbus_test_writable_pool,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "policy",
-+ .desc = "policy",
-+ .func = kdbus_test_policy,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "policy-priv",
-+ .desc = "unprivileged bus access",
-+ .func = kdbus_test_policy_priv,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "policy-ns",
-+ .desc = "policy in user namespaces",
-+ .func = kdbus_test_policy_ns,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "metadata-ns",
-+ .desc = "metadata in different namespaces",
-+ .func = kdbus_test_metadata_ns,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "match-id-add",
-+ .desc = "adding of matches by id",
-+ .func = kdbus_test_match_id_add,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "match-id-remove",
-+ .desc = "removing of matches by id",
-+ .func = kdbus_test_match_id_remove,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "match-replace",
-+ .desc = "replace of matches with the same cookie",
-+ .func = kdbus_test_match_replace,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "match-name-add",
-+ .desc = "adding of matches by name",
-+ .func = kdbus_test_match_name_add,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "match-name-remove",
-+ .desc = "removing of matches by name",
-+ .func = kdbus_test_match_name_remove,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "match-name-change",
-+ .desc = "matching for name changes",
-+ .func = kdbus_test_match_name_change,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "match-bloom",
-+ .desc = "matching with bloom filters",
-+ .func = kdbus_test_match_bloom,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "activator",
-+ .desc = "activator connections",
-+ .func = kdbus_test_activator,
-+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
-+ },
-+ {
-+ .name = "benchmark",
-+ .desc = "benchmark",
-+ .func = kdbus_test_benchmark,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "benchmark-nomemfds",
-+ .desc = "benchmark without using memfds",
-+ .func = kdbus_test_benchmark_nomemfds,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+ {
-+ .name = "benchmark-uds",
-+ .desc = "benchmark comparison to UDS",
-+ .func = kdbus_test_benchmark_uds,
-+ .flags = TEST_CREATE_BUS,
-+ },
-+};
-+
-+#define N_TESTS ((int) (sizeof(tests) / sizeof(tests[0])))
-+
-+static int test_prepare_env(const struct kdbus_test *t,
-+ const struct kdbus_test_args *args,
-+ struct kdbus_test_env *env)
-+{
-+ if (t->flags & TEST_CREATE_BUS) {
-+ char *s;
-+ char *n = NULL;
-+ int ret;
-+
-+ asprintf(&s, "%s/control", args->root);
-+
-+ env->control_fd = open(s, O_RDWR);
-+ free(s);
-+ ASSERT_RETURN(env->control_fd >= 0);
-+
-+ if (!args->busname) {
-+ n = unique_name("test-bus");
-+ ASSERT_RETURN(n);
-+ }
-+
-+ ret = kdbus_create_bus(env->control_fd,
-+ args->busname ?: n,
-+ _KDBUS_ATTACH_ALL, &s);
-+ free(n);
-+ ASSERT_RETURN(ret == 0);
-+
-+ asprintf(&env->buspath, "%s/%s/bus", args->root, s);
-+ free(s);
-+ }
-+
-+ if (t->flags & TEST_CREATE_CONN) {
-+ env->conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(env->conn);
-+ }
-+
-+ env->root = args->root;
-+ env->module = args->module;
-+
-+ return 0;
-+}
-+
-+void test_unprepare_env(const struct kdbus_test *t, struct kdbus_test_env *env)
-+{
-+ if (env->conn) {
-+ kdbus_conn_free(env->conn);
-+ env->conn = NULL;
-+ }
-+
-+ if (env->control_fd >= 0) {
-+ close(env->control_fd);
-+ env->control_fd = -1;
-+ }
-+
-+ if (env->buspath) {
-+ free(env->buspath);
-+ env->buspath = NULL;
-+ }
-+}
-+
-+static int test_run(const struct kdbus_test *t,
-+ const struct kdbus_test_args *kdbus_args,
-+ int wait)
-+{
-+ int ret;
-+ struct kdbus_test_env env = {};
-+
-+ ret = test_prepare_env(t, kdbus_args, &env);
-+ if (ret != TEST_OK)
-+ return ret;
-+
-+ if (wait > 0) {
-+ printf("Sleeping %d seconds before running test ...\n", wait);
-+ sleep(wait);
-+ }
-+
-+ ret = t->func(&env);
-+ test_unprepare_env(t, &env);
-+ return ret;
-+}
-+
-+static int test_run_forked(const struct kdbus_test *t,
-+ const struct kdbus_test_args *kdbus_args,
-+ int wait)
-+{
-+ int ret;
-+ pid_t pid;
-+
-+ pid = fork();
-+ if (pid < 0) {
-+ return TEST_ERR;
-+ } else if (pid == 0) {
-+ ret = test_run(t, kdbus_args, wait);
-+ _exit(ret);
-+ }
-+
-+ pid = waitpid(pid, &ret, 0);
-+ if (pid <= 0)
-+ return TEST_ERR;
-+ else if (!WIFEXITED(ret))
-+ return TEST_ERR;
-+ else
-+ return WEXITSTATUS(ret);
-+}
-+
-+static void print_test_result(int ret)
-+{
-+ switch (ret) {
-+ case TEST_OK:
-+ printf("OK");
-+ break;
-+ case TEST_SKIP:
-+ printf("SKIPPED");
-+ break;
-+ case TEST_ERR:
-+ printf("ERROR");
-+ break;
-+ }
-+}
-+
-+static int start_all_tests(struct kdbus_test_args *kdbus_args)
-+{
-+ int ret;
-+ unsigned int fail_cnt = 0;
-+ unsigned int skip_cnt = 0;
-+ unsigned int ok_cnt = 0;
-+ unsigned int i;
-+
-+ if (kdbus_args->tap_output) {
-+ printf("1..%d\n", N_TESTS);
-+ fflush(stdout);
-+ }
-+
-+ kdbus_util_verbose = false;
-+
-+ for (i = 0; i < N_TESTS; i++) {
-+ const struct kdbus_test *t = tests + i;
-+
-+ if (!kdbus_args->tap_output) {
-+ unsigned int n;
-+
-+ printf("Testing %s (%s) ", t->desc, t->name);
-+ for (n = 0; n < 60 - strlen(t->desc) - strlen(t->name); n++)
-+ printf(".");
-+ printf(" ");
-+ }
-+
-+ ret = test_run_forked(t, kdbus_args, 0);
-+ switch (ret) {
-+ case TEST_OK:
-+ ok_cnt++;
-+ break;
-+ case TEST_SKIP:
-+ skip_cnt++;
-+ break;
-+ case TEST_ERR:
-+ fail_cnt++;
-+ break;
-+ }
-+
-+ if (kdbus_args->tap_output) {
-+ printf("%sok %d - %s%s (%s)\n",
-+ (ret == TEST_ERR) ? "not " : "", i + 1,
-+ (ret == TEST_SKIP) ? "# SKIP " : "",
-+ t->desc, t->name);
-+ fflush(stdout);
-+ } else {
-+ print_test_result(ret);
-+ printf("\n");
-+ }
-+ }
-+
-+ if (kdbus_args->tap_output)
-+ printf("Failed %d/%d tests, %.2f%% okay\n", fail_cnt, N_TESTS,
-+ 100.0 - (fail_cnt * 100.0) / ((float) N_TESTS));
-+ else
-+ printf("\nSUMMARY: %u tests passed, %u skipped, %u failed\n",
-+ ok_cnt, skip_cnt, fail_cnt);
-+
-+ return fail_cnt > 0 ? TEST_ERR : TEST_OK;
-+}
-+
-+static int start_one_test(struct kdbus_test_args *kdbus_args)
-+{
-+ int i, ret;
-+ bool test_found = false;
-+
-+ for (i = 0; i < N_TESTS; i++) {
-+ const struct kdbus_test *t = tests + i;
-+
-+ if (strcmp(t->name, kdbus_args->test))
-+ continue;
-+
-+ do {
-+ test_found = true;
-+ if (kdbus_args->fork)
-+ ret = test_run_forked(t, kdbus_args,
-+ kdbus_args->wait);
-+ else
-+ ret = test_run(t, kdbus_args,
-+ kdbus_args->wait);
-+
-+ printf("Testing %s: ", t->desc);
-+ print_test_result(ret);
-+ printf("\n");
-+
-+ if (ret != TEST_OK)
-+ break;
-+ } while (kdbus_args->loop);
-+
-+ return ret;
-+ }
-+
-+ if (!test_found) {
-+ printf("Unknown test-id '%s'\n", kdbus_args->test);
-+ return TEST_ERR;
-+ }
-+
-+ return TEST_OK;
-+}
-+
-+static void usage(const char *argv0)
-+{
-+ unsigned int i, j;
-+
-+ printf("Usage: %s [options]\n"
-+ "Options:\n"
-+ "\t-a, --tap Output test results in TAP format\n"
-+ "\t-m, --module <module> Kdbus module name\n"
-+ "\t-x, --loop Run in a loop\n"
-+ "\t-f, --fork Fork before running a test\n"
-+ "\t-h, --help Print this help\n"
-+ "\t-r, --root <root> Toplevel of the kdbus hierarchy\n"
-+ "\t-t, --test <test-id> Run one specific test only, in verbose mode\n"
-+ "\t-b, --bus <busname> Instead of generating a random bus name, take <busname>.\n"
-+ "\t-w, --wait <secs> Wait <secs> before actually starting test\n"
-+ "\t --mntns New mount namespace\n"
-+ "\t --pidns New PID namespace\n"
-+ "\t --userns New user namespace\n"
-+ "\t --uidmap uid_map UID map for user namespace\n"
-+ "\t --gidmap gid_map GID map for user namespace\n"
-+ "\n", argv0);
-+
-+ printf("By default, all test are run once, and a summary is printed.\n"
-+ "Available tests for --test:\n\n");
-+
-+ for (i = 0; i < N_TESTS; i++) {
-+ const struct kdbus_test *t = tests + i;
-+
-+ printf("\t%s", t->name);
-+
-+ for (j = 0; j < 24 - strlen(t->name); j++)
-+ printf(" ");
-+
-+ printf("Test %s\n", t->desc);
-+ }
-+
-+ printf("\n");
-+ printf("Note that some tests may, if run specifically by --test, "
-+ "behave differently, and not terminate by themselves.\n");
-+
-+ exit(EXIT_FAILURE);
-+}
-+
-+void print_kdbus_test_args(struct kdbus_test_args *args)
-+{
-+ if (args->userns || args->pidns || args->mntns)
-+ printf("# Starting tests in new %s%s%s namespaces%s\n",
-+ args->mntns ? "MOUNT " : "",
-+ args->pidns ? "PID " : "",
-+ args->userns ? "USER " : "",
-+ args->mntns ? ", kdbusfs will be remounted" : "");
-+ else
-+ printf("# Starting tests in the same namespaces\n");
-+}
-+
-+void print_metadata_support(void)
-+{
-+ bool no_meta_audit, no_meta_cgroups, no_meta_seclabel;
-+
-+ /*
-+ * KDBUS_ATTACH_CGROUP, KDBUS_ATTACH_AUDIT and
-+ * KDBUS_ATTACH_SECLABEL
-+ */
-+ no_meta_audit = !config_auditsyscall_is_enabled();
-+ no_meta_cgroups = !config_cgroups_is_enabled();
-+ no_meta_seclabel = !config_security_is_enabled();
-+
-+ if (no_meta_audit | no_meta_cgroups | no_meta_seclabel)
-+ printf("# Starting tests without %s%s%s metadata support\n",
-+ no_meta_audit ? "AUDIT " : "",
-+ no_meta_cgroups ? "CGROUP " : "",
-+ no_meta_seclabel ? "SECLABEL " : "");
-+ else
-+ printf("# Starting tests with full metadata support\n");
-+}
-+
-+int run_tests(struct kdbus_test_args *kdbus_args)
-+{
-+ int ret;
-+ static char control[4096];
-+
-+ snprintf(control, sizeof(control), "%s/control", kdbus_args->root);
-+
-+ if (access(control, W_OK) < 0) {
-+ printf("Unable to locate control node at '%s'.\n",
-+ control);
-+ return TEST_ERR;
-+ }
-+
-+ if (kdbus_args->test) {
-+ ret = start_one_test(kdbus_args);
-+ } else {
-+ do {
-+ ret = start_all_tests(kdbus_args);
-+ if (ret != TEST_OK)
-+ break;
-+ } while (kdbus_args->loop);
-+ }
-+
-+ return ret;
-+}
-+
-+static void nop_handler(int sig) {}
-+
-+static int test_prepare_mounts(struct kdbus_test_args *kdbus_args)
-+{
-+ int ret;
-+ char kdbusfs[64] = {'\0'};
-+
-+ snprintf(kdbusfs, sizeof(kdbusfs), "%sfs", kdbus_args->module);
-+
-+ /* make current mount slave */
-+ ret = mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL);
-+ if (ret < 0) {
-+ ret = -errno;
-+ printf("error mount() root: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ /* Remount procfs since we need it in our tests */
-+ if (kdbus_args->pidns) {
-+ ret = mount("proc", "/proc", "proc",
-+ MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
-+ if (ret < 0) {
-+ ret = -errno;
-+ printf("error mount() /proc : %d (%m)\n", ret);
-+ return ret;
-+ }
-+ }
-+
-+ /* Remount kdbusfs */
-+ ret = mount(kdbusfs, kdbus_args->root, kdbusfs,
-+ MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
-+ if (ret < 0) {
-+ ret = -errno;
-+ printf("error mount() %s :%d (%m)\n", kdbusfs, ret);
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+int run_tests_in_namespaces(struct kdbus_test_args *kdbus_args)
-+{
-+ int ret;
-+ int efd = -1;
-+ int status;
-+ pid_t pid, rpid;
-+ struct sigaction oldsa;
-+ struct sigaction sa = {
-+ .sa_handler = nop_handler,
-+ .sa_flags = SA_NOCLDSTOP,
-+ };
-+
-+ efd = eventfd(0, EFD_CLOEXEC);
-+ if (efd < 0) {
-+ ret = -errno;
-+ printf("eventfd() failed: %d (%m)\n", ret);
-+ return TEST_ERR;
-+ }
-+
-+ ret = sigaction(SIGCHLD, &sa, &oldsa);
-+ if (ret < 0) {
-+ ret = -errno;
-+ printf("sigaction() failed: %d (%m)\n", ret);
-+ return TEST_ERR;
-+ }
-+
-+ /* setup namespaces */
-+ pid = syscall(__NR_clone, SIGCHLD|
-+ (kdbus_args->userns ? CLONE_NEWUSER : 0) |
-+ (kdbus_args->mntns ? CLONE_NEWNS : 0) |
-+ (kdbus_args->pidns ? CLONE_NEWPID : 0), NULL);
-+ if (pid < 0) {
-+ printf("clone() failed: %d (%m)\n", -errno);
-+ return TEST_ERR;
-+ }
-+
-+ if (pid == 0) {
-+ eventfd_t event_status = 0;
-+
-+ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
-+ if (ret < 0) {
-+ ret = -errno;
-+ printf("error prctl(): %d (%m)\n", ret);
-+ _exit(TEST_ERR);
-+ }
-+
-+ /* reset sighandlers of childs */
-+ ret = sigaction(SIGCHLD, &oldsa, NULL);
-+ if (ret < 0) {
-+ ret = -errno;
-+ printf("sigaction() failed: %d (%m)\n", ret);
-+ _exit(TEST_ERR);
-+ }
-+
-+ ret = eventfd_read(efd, &event_status);
-+ if (ret < 0 || event_status != 1) {
-+ printf("error eventfd_read()\n");
-+ _exit(TEST_ERR);
-+ }
-+
-+ if (kdbus_args->mntns) {
-+ ret = test_prepare_mounts(kdbus_args);
-+ if (ret < 0) {
-+ printf("error preparing mounts\n");
-+ _exit(TEST_ERR);
-+ }
-+ }
-+
-+ ret = run_tests(kdbus_args);
-+ _exit(ret);
-+ }
-+
-+ /* Setup userns mapping */
-+ if (kdbus_args->userns) {
-+ ret = userns_map_uid_gid(pid, kdbus_args->uid_map,
-+ kdbus_args->gid_map);
-+ if (ret < 0) {
-+ printf("error mapping uid and gid in userns\n");
-+ eventfd_write(efd, 2);
-+ return TEST_ERR;
-+ }
-+ }
-+
-+ ret = eventfd_write(efd, 1);
-+ if (ret < 0) {
-+ ret = -errno;
-+ printf("error eventfd_write(): %d (%m)\n", ret);
-+ return TEST_ERR;
-+ }
-+
-+ rpid = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(rpid == pid, TEST_ERR);
-+
-+ close(efd);
-+
-+ if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
-+ return TEST_ERR;
-+
-+ return TEST_OK;
-+}
-+
-+int start_tests(struct kdbus_test_args *kdbus_args)
-+{
-+ int ret;
-+ bool namespaces;
-+ static char fspath[4096];
-+
-+ namespaces = (kdbus_args->mntns || kdbus_args->pidns ||
-+ kdbus_args->userns);
-+
-+ /* for pidns we need mntns set */
-+ if (kdbus_args->pidns && !kdbus_args->mntns) {
-+ printf("Failed: please set both pid and mnt namesapces\n");
-+ return TEST_ERR;
-+ }
-+
-+ if (kdbus_args->userns) {
-+ if (!config_user_ns_is_enabled()) {
-+ printf("User namespace not supported\n");
-+ return TEST_ERR;
-+ }
-+
-+ if (!kdbus_args->uid_map || !kdbus_args->gid_map) {
-+ printf("Failed: please specify uid or gid mapping\n");
-+ return TEST_ERR;
-+ }
-+ }
-+
-+ print_kdbus_test_args(kdbus_args);
-+ print_metadata_support();
-+
-+ /* setup kdbus paths */
-+ if (!kdbus_args->module)
-+ kdbus_args->module = "kdbus";
-+
-+ if (!kdbus_args->root) {
-+ snprintf(fspath, sizeof(fspath), "/sys/fs/%s",
-+ kdbus_args->module);
-+ kdbus_args->root = fspath;
-+ }
-+
-+ /* Start tests */
-+ if (namespaces)
-+ ret = run_tests_in_namespaces(kdbus_args);
-+ else
-+ ret = run_tests(kdbus_args);
-+
-+ return ret;
-+}
-+
-+int main(int argc, char *argv[])
-+{
-+ int t, ret = 0;
-+ struct kdbus_test_args *kdbus_args;
-+ enum {
-+ ARG_MNTNS = 0x100,
-+ ARG_PIDNS,
-+ ARG_USERNS,
-+ ARG_UIDMAP,
-+ ARG_GIDMAP,
-+ };
-+
-+ kdbus_args = malloc(sizeof(*kdbus_args));
-+ if (!kdbus_args) {
-+ printf("unable to malloc() kdbus_args\n");
-+ return EXIT_FAILURE;
-+ }
-+
-+ memset(kdbus_args, 0, sizeof(*kdbus_args));
-+
-+ static const struct option options[] = {
-+ { "loop", no_argument, NULL, 'x' },
-+ { "help", no_argument, NULL, 'h' },
-+ { "root", required_argument, NULL, 'r' },
-+ { "test", required_argument, NULL, 't' },
-+ { "bus", required_argument, NULL, 'b' },
-+ { "wait", required_argument, NULL, 'w' },
-+ { "fork", no_argument, NULL, 'f' },
-+ { "module", required_argument, NULL, 'm' },
-+ { "tap", no_argument, NULL, 'a' },
-+ { "mntns", no_argument, NULL, ARG_MNTNS },
-+ { "pidns", no_argument, NULL, ARG_PIDNS },
-+ { "userns", no_argument, NULL, ARG_USERNS },
-+ { "uidmap", required_argument, NULL, ARG_UIDMAP },
-+ { "gidmap", required_argument, NULL, ARG_GIDMAP },
-+ {}
-+ };
-+
-+ srand(time(NULL));
-+
-+ while ((t = getopt_long(argc, argv, "hxfm:r:t:b:w:a", options, NULL)) >= 0) {
-+ switch (t) {
-+ case 'x':
-+ kdbus_args->loop = 1;
-+ break;
-+
-+ case 'm':
-+ kdbus_args->module = optarg;
-+ break;
-+
-+ case 'r':
-+ kdbus_args->root = optarg;
-+ break;
-+
-+ case 't':
-+ kdbus_args->test = optarg;
-+ break;
-+
-+ case 'b':
-+ kdbus_args->busname = optarg;
-+ break;
-+
-+ case 'w':
-+ kdbus_args->wait = strtol(optarg, NULL, 10);
-+ break;
-+
-+ case 'f':
-+ kdbus_args->fork = 1;
-+ break;
-+
-+ case 'a':
-+ kdbus_args->tap_output = 1;
-+ break;
-+
-+ case ARG_MNTNS:
-+ kdbus_args->mntns = true;
-+ break;
-+
-+ case ARG_PIDNS:
-+ kdbus_args->pidns = true;
-+ break;
-+
-+ case ARG_USERNS:
-+ kdbus_args->userns = true;
-+ break;
-+
-+ case ARG_UIDMAP:
-+ kdbus_args->uid_map = optarg;
-+ break;
-+
-+ case ARG_GIDMAP:
-+ kdbus_args->gid_map = optarg;
-+ break;
-+
-+ default:
-+ case 'h':
-+ usage(argv[0]);
-+ }
-+ }
-+
-+ ret = start_tests(kdbus_args);
-+ if (ret == TEST_ERR)
-+ return EXIT_FAILURE;
-+
-+ free(kdbus_args);
-+
-+ return 0;
-+}
-diff --git a/tools/testing/selftests/kdbus/kdbus-test.h b/tools/testing/selftests/kdbus/kdbus-test.h
-new file mode 100644
-index 0000000..ee937f9
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/kdbus-test.h
-@@ -0,0 +1,84 @@
-+#ifndef _TEST_KDBUS_H_
-+#define _TEST_KDBUS_H_
-+
-+struct kdbus_test_env {
-+ char *buspath;
-+ const char *root;
-+ const char *module;
-+ int control_fd;
-+ struct kdbus_conn *conn;
-+};
-+
-+enum {
-+ TEST_OK,
-+ TEST_SKIP,
-+ TEST_ERR,
-+};
-+
-+#define ASSERT_RETURN_VAL(cond, val) \
-+ if (!(cond)) { \
-+ fprintf(stderr, "Assertion '%s' failed in %s(), %s:%d\n", \
-+ #cond, __func__, __FILE__, __LINE__); \
-+ return val; \
-+ }
-+
-+#define ASSERT_EXIT_VAL(cond, val) \
-+ if (!(cond)) { \
-+ fprintf(stderr, "Assertion '%s' failed in %s(), %s:%d\n", \
-+ #cond, __func__, __FILE__, __LINE__); \
-+ _exit(val); \
-+ }
-+
-+#define ASSERT_BREAK(cond) \
-+ if (!(cond)) { \
-+ fprintf(stderr, "Assertion '%s' failed in %s(), %s:%d\n", \
-+ #cond, __func__, __FILE__, __LINE__); \
-+ break; \
-+ }
-+
-+#define ASSERT_RETURN(cond) \
-+ ASSERT_RETURN_VAL(cond, TEST_ERR)
-+
-+#define ASSERT_EXIT(cond) \
-+ ASSERT_EXIT_VAL(cond, EXIT_FAILURE)
-+
-+int kdbus_test_activator(struct kdbus_test_env *env);
-+int kdbus_test_benchmark(struct kdbus_test_env *env);
-+int kdbus_test_benchmark_nomemfds(struct kdbus_test_env *env);
-+int kdbus_test_benchmark_uds(struct kdbus_test_env *env);
-+int kdbus_test_bus_make(struct kdbus_test_env *env);
-+int kdbus_test_byebye(struct kdbus_test_env *env);
-+int kdbus_test_chat(struct kdbus_test_env *env);
-+int kdbus_test_conn_info(struct kdbus_test_env *env);
-+int kdbus_test_conn_update(struct kdbus_test_env *env);
-+int kdbus_test_daemon(struct kdbus_test_env *env);
-+int kdbus_test_custom_endpoint(struct kdbus_test_env *env);
-+int kdbus_test_fd_passing(struct kdbus_test_env *env);
-+int kdbus_test_free(struct kdbus_test_env *env);
-+int kdbus_test_hello(struct kdbus_test_env *env);
-+int kdbus_test_match_bloom(struct kdbus_test_env *env);
-+int kdbus_test_match_id_add(struct kdbus_test_env *env);
-+int kdbus_test_match_id_remove(struct kdbus_test_env *env);
-+int kdbus_test_match_replace(struct kdbus_test_env *env);
-+int kdbus_test_match_name_add(struct kdbus_test_env *env);
-+int kdbus_test_match_name_change(struct kdbus_test_env *env);
-+int kdbus_test_match_name_remove(struct kdbus_test_env *env);
-+int kdbus_test_message_basic(struct kdbus_test_env *env);
-+int kdbus_test_message_prio(struct kdbus_test_env *env);
-+int kdbus_test_message_quota(struct kdbus_test_env *env);
-+int kdbus_test_memory_access(struct kdbus_test_env *env);
-+int kdbus_test_metadata_ns(struct kdbus_test_env *env);
-+int kdbus_test_monitor(struct kdbus_test_env *env);
-+int kdbus_test_name_basic(struct kdbus_test_env *env);
-+int kdbus_test_name_conflict(struct kdbus_test_env *env);
-+int kdbus_test_name_queue(struct kdbus_test_env *env);
-+int kdbus_test_name_takeover(struct kdbus_test_env *env);
-+int kdbus_test_policy(struct kdbus_test_env *env);
-+int kdbus_test_policy_ns(struct kdbus_test_env *env);
-+int kdbus_test_policy_priv(struct kdbus_test_env *env);
-+int kdbus_test_sync_byebye(struct kdbus_test_env *env);
-+int kdbus_test_sync_reply(struct kdbus_test_env *env);
-+int kdbus_test_timeout(struct kdbus_test_env *env);
-+int kdbus_test_writable_pool(struct kdbus_test_env *env);
-+
-+#endif /* _TEST_KDBUS_H_ */
-diff --git a/tools/testing/selftests/kdbus/kdbus-util.c b/tools/testing/selftests/kdbus/kdbus-util.c
-new file mode 100644
-index 0000000..82fa89b
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/kdbus-util.c
-@@ -0,0 +1,1612 @@
-+/*
-+ * Copyright (C) 2013-2015 Daniel Mack
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2014-2015 Djalal Harouni
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <stdio.h>
-+#include <stdarg.h>
-+#include <string.h>
-+#include <time.h>
-+#include <inttypes.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <stdbool.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <poll.h>
-+#include <grp.h>
-+#include <sys/capability.h>
-+#include <sys/mman.h>
-+#include <sys/stat.h>
-+#include <sys/time.h>
-+#include <linux/unistd.h>
-+#include <linux/memfd.h>
-+
-+#ifndef __NR_memfd_create
-+ #ifdef __x86_64__
-+ #define __NR_memfd_create 319
-+ #elif defined __arm__
-+ #define __NR_memfd_create 385
-+ #else
-+ #define __NR_memfd_create 356
-+ #endif
-+#endif
-+
-+#include "kdbus-api.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+#ifndef F_ADD_SEALS
-+#define F_LINUX_SPECIFIC_BASE 1024
-+#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
-+#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
-+
-+#define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
-+#define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
-+#define F_SEAL_GROW 0x0004 /* prevent file from growing */
-+#define F_SEAL_WRITE 0x0008 /* prevent writes */
-+#endif
-+
-+int kdbus_util_verbose = true;
-+
-+int kdbus_sysfs_get_parameter_mask(const char *path, uint64_t *mask)
-+{
-+ int ret;
-+ FILE *file;
-+ unsigned long long value;
-+
-+ file = fopen(path, "r");
-+ if (!file) {
-+ ret = -errno;
-+ kdbus_printf("--- error fopen(): %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ ret = fscanf(file, "%llu", &value);
-+ if (ret != 1) {
-+ if (ferror(file))
-+ ret = -errno;
-+ else
-+ ret = -EIO;
-+
-+ kdbus_printf("--- error fscanf(): %d\n", ret);
-+ fclose(file);
-+ return ret;
-+ }
-+
-+ *mask = (uint64_t)value;
-+
-+ fclose(file);
-+
-+ return 0;
-+}
-+
-+int kdbus_sysfs_set_parameter_mask(const char *path, uint64_t mask)
-+{
-+ int ret;
-+ FILE *file;
-+
-+ file = fopen(path, "w");
-+ if (!file) {
-+ ret = -errno;
-+ kdbus_printf("--- error open(): %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ ret = fprintf(file, "%llu", (unsigned long long)mask);
-+ if (ret <= 0) {
-+ ret = -EIO;
-+ kdbus_printf("--- error fprintf(): %d\n", ret);
-+ }
-+
-+ fclose(file);
-+
-+ return ret > 0 ? 0 : ret;
-+}
-+
-+int kdbus_create_bus(int control_fd, const char *name,
-+ uint64_t owner_meta, char **path)
-+{
-+ struct {
-+ struct kdbus_cmd cmd;
-+
-+ /* bloom size item */
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_bloom_parameter bloom;
-+ } bp;
-+
-+ /* owner metadata items */
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ uint64_t flags;
-+ } attach;
-+
-+ /* name item */
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ char str[64];
-+ } name;
-+ } bus_make;
-+ int ret;
-+
-+ memset(&bus_make, 0, sizeof(bus_make));
-+ bus_make.bp.size = sizeof(bus_make.bp);
-+ bus_make.bp.type = KDBUS_ITEM_BLOOM_PARAMETER;
-+ bus_make.bp.bloom.size = 64;
-+ bus_make.bp.bloom.n_hash = 1;
-+
-+ snprintf(bus_make.name.str, sizeof(bus_make.name.str),
-+ "%u-%s", getuid(), name);
-+
-+ bus_make.attach.type = KDBUS_ITEM_ATTACH_FLAGS_SEND;
-+ bus_make.attach.size = sizeof(bus_make.attach);
-+ bus_make.attach.flags = owner_meta;
-+
-+ bus_make.name.type = KDBUS_ITEM_MAKE_NAME;
-+ bus_make.name.size = KDBUS_ITEM_HEADER_SIZE +
-+ strlen(bus_make.name.str) + 1;
-+
-+ bus_make.cmd.flags = KDBUS_MAKE_ACCESS_WORLD;
-+ bus_make.cmd.size = sizeof(bus_make.cmd) +
-+ bus_make.bp.size +
-+ bus_make.attach.size +
-+ bus_make.name.size;
-+
-+ kdbus_printf("Creating bus with name >%s< on control fd %d ...\n",
-+ name, control_fd);
-+
-+ ret = kdbus_cmd_bus_make(control_fd, &bus_make.cmd);
-+ if (ret < 0) {
-+ kdbus_printf("--- error when making bus: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ if (ret == 0 && path)
-+ *path = strdup(bus_make.name.str);
-+
-+ return ret;
-+}
-+
-+struct kdbus_conn *
-+kdbus_hello(const char *path, uint64_t flags,
-+ const struct kdbus_item *item, size_t item_size)
-+{
-+ struct kdbus_cmd_free cmd_free = {};
-+ int fd, ret;
-+ struct {
-+ struct kdbus_cmd_hello hello;
-+
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ char str[16];
-+ } conn_name;
-+
-+ uint8_t extra_items[item_size];
-+ } h;
-+ struct kdbus_conn *conn;
-+
-+ memset(&h, 0, sizeof(h));
-+
-+ if (item_size > 0)
-+ memcpy(h.extra_items, item, item_size);
-+
-+ kdbus_printf("-- opening bus connection %s\n", path);
-+ fd = open(path, O_RDWR|O_CLOEXEC);
-+ if (fd < 0) {
-+ kdbus_printf("--- error %d (%m)\n", fd);
-+ return NULL;
-+ }
-+
-+ h.hello.flags = flags | KDBUS_HELLO_ACCEPT_FD;
-+ h.hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+ h.hello.attach_flags_recv = _KDBUS_ATTACH_ALL;
-+ h.conn_name.type = KDBUS_ITEM_CONN_DESCRIPTION;
-+ strcpy(h.conn_name.str, "this-is-my-name");
-+ h.conn_name.size = KDBUS_ITEM_HEADER_SIZE + strlen(h.conn_name.str) + 1;
-+
-+ h.hello.size = sizeof(h);
-+ h.hello.pool_size = POOL_SIZE;
-+
-+ ret = kdbus_cmd_hello(fd, (struct kdbus_cmd_hello *) &h.hello);
-+ if (ret < 0) {
-+ kdbus_printf("--- error when saying hello: %d (%m)\n", ret);
-+ return NULL;
-+ }
-+ kdbus_printf("-- Our peer ID for %s: %llu -- bus uuid: '%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x'\n",
-+ path, (unsigned long long)h.hello.id,
-+ h.hello.id128[0], h.hello.id128[1], h.hello.id128[2],
-+ h.hello.id128[3], h.hello.id128[4], h.hello.id128[5],
-+ h.hello.id128[6], h.hello.id128[7], h.hello.id128[8],
-+ h.hello.id128[9], h.hello.id128[10], h.hello.id128[11],
-+ h.hello.id128[12], h.hello.id128[13], h.hello.id128[14],
-+ h.hello.id128[15]);
-+
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.offset = h.hello.offset;
-+ kdbus_cmd_free(fd, &cmd_free);
-+
-+ conn = malloc(sizeof(*conn));
-+ if (!conn) {
-+ kdbus_printf("unable to malloc()!?\n");
-+ return NULL;
-+ }
-+
-+ conn->buf = mmap(NULL, POOL_SIZE, PROT_READ, MAP_SHARED, fd, 0);
-+ if (conn->buf == MAP_FAILED) {
-+ free(conn);
-+ close(fd);
-+ kdbus_printf("--- error mmap (%m)\n");
-+ return NULL;
-+ }
-+
-+ conn->fd = fd;
-+ conn->id = h.hello.id;
-+ return conn;
-+}
-+
-+struct kdbus_conn *
-+kdbus_hello_registrar(const char *path, const char *name,
-+ const struct kdbus_policy_access *access,
-+ size_t num_access, uint64_t flags)
-+{
-+ struct kdbus_item *item, *items;
-+ size_t i, size;
-+
-+ size = KDBUS_ITEM_SIZE(strlen(name) + 1) +
-+ num_access * KDBUS_ITEM_SIZE(sizeof(*access));
-+
-+ items = alloca(size);
-+
-+ item = items;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
-+ item->type = KDBUS_ITEM_NAME;
-+ strcpy(item->str, name);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ for (i = 0; i < num_access; i++) {
-+ item->size = KDBUS_ITEM_HEADER_SIZE +
-+ sizeof(struct kdbus_policy_access);
-+ item->type = KDBUS_ITEM_POLICY_ACCESS;
-+
-+ item->policy_access.type = access[i].type;
-+ item->policy_access.access = access[i].access;
-+ item->policy_access.id = access[i].id;
-+
-+ item = KDBUS_ITEM_NEXT(item);
-+ }
-+
-+ return kdbus_hello(path, flags, items, size);
-+}
-+
-+struct kdbus_conn *kdbus_hello_activator(const char *path, const char *name,
-+ const struct kdbus_policy_access *access,
-+ size_t num_access)
-+{
-+ return kdbus_hello_registrar(path, name, access, num_access,
-+ KDBUS_HELLO_ACTIVATOR);
-+}
-+
-+bool kdbus_item_in_message(struct kdbus_msg *msg, uint64_t type)
-+{
-+ const struct kdbus_item *item;
-+
-+ KDBUS_ITEM_FOREACH(item, msg, items)
-+ if (item->type == type)
-+ return true;
-+
-+ return false;
-+}
-+
-+int kdbus_bus_creator_info(struct kdbus_conn *conn,
-+ uint64_t flags,
-+ uint64_t *offset)
-+{
-+ struct kdbus_cmd_info *cmd;
-+ size_t size = sizeof(*cmd);
-+ int ret;
-+
-+ cmd = alloca(size);
-+ memset(cmd, 0, size);
-+ cmd->size = size;
-+ cmd->attach_flags = flags;
-+
-+ ret = kdbus_cmd_bus_creator_info(conn->fd, cmd);
-+ if (ret < 0) {
-+ kdbus_printf("--- error when requesting info: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ if (offset)
-+ *offset = cmd->offset;
-+ else
-+ kdbus_free(conn, cmd->offset);
-+
-+ return 0;
-+}
-+
-+int kdbus_conn_info(struct kdbus_conn *conn, uint64_t id,
-+ const char *name, uint64_t flags,
-+ uint64_t *offset)
-+{
-+ struct kdbus_cmd_info *cmd;
-+ size_t size = sizeof(*cmd);
-+ struct kdbus_info *info;
-+ int ret;
-+
-+ if (name)
-+ size += KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
-+
-+ cmd = alloca(size);
-+ memset(cmd, 0, size);
-+ cmd->size = size;
-+ cmd->attach_flags = flags;
-+
-+ if (name) {
-+ cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
-+ cmd->items[0].type = KDBUS_ITEM_NAME;
-+ strcpy(cmd->items[0].str, name);
-+ } else {
-+ cmd->id = id;
-+ }
-+
-+ ret = kdbus_cmd_conn_info(conn->fd, cmd);
-+ if (ret < 0) {
-+ kdbus_printf("--- error when requesting info: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ info = (struct kdbus_info *) (conn->buf + cmd->offset);
-+ if (info->size != cmd->info_size) {
-+ kdbus_printf("%s(): size mismatch: %d != %d\n", __func__,
-+ (int) info->size, (int) cmd->info_size);
-+ return -EIO;
-+ }
-+
-+ if (offset)
-+ *offset = cmd->offset;
-+ else
-+ kdbus_free(conn, cmd->offset);
-+
-+ return 0;
-+}
-+
-+void kdbus_conn_free(struct kdbus_conn *conn)
-+{
-+ if (!conn)
-+ return;
-+
-+ if (conn->buf)
-+ munmap(conn->buf, POOL_SIZE);
-+
-+ if (conn->fd >= 0)
-+ close(conn->fd);
-+
-+ free(conn);
-+}
-+
-+int sys_memfd_create(const char *name, __u64 size)
-+{
-+ int ret, fd;
-+
-+ fd = syscall(__NR_memfd_create, name, MFD_ALLOW_SEALING);
-+ if (fd < 0)
-+ return fd;
-+
-+ ret = ftruncate(fd, size);
-+ if (ret < 0) {
-+ close(fd);
-+ return ret;
-+ }
-+
-+ return fd;
-+}
-+
-+int sys_memfd_seal_set(int fd)
-+{
-+ return fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK |
-+ F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL);
-+}
-+
-+off_t sys_memfd_get_size(int fd, off_t *size)
-+{
-+ struct stat stat;
-+ int ret;
-+
-+ ret = fstat(fd, &stat);
-+ if (ret < 0) {
-+ kdbus_printf("stat() failed: %m\n");
-+ return ret;
-+ }
-+
-+ *size = stat.st_size;
-+ return 0;
-+}
-+
-+static int __kdbus_msg_send(const struct kdbus_conn *conn,
-+ const char *name,
-+ uint64_t cookie,
-+ uint64_t flags,
-+ uint64_t timeout,
-+ int64_t priority,
-+ uint64_t dst_id,
-+ uint64_t cmd_flags,
-+ int cancel_fd)
-+{
-+ struct kdbus_cmd_send *cmd = NULL;
-+ struct kdbus_msg *msg = NULL;
-+ const char ref1[1024 * 128 + 3] = "0123456789_0";
-+ const char ref2[] = "0123456789_1";
-+ struct kdbus_item *item;
-+ struct timespec now;
-+ uint64_t size;
-+ int memfd = -1;
-+ int ret;
-+
-+ size = sizeof(*msg) + 3 * KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+
-+ if (dst_id == KDBUS_DST_ID_BROADCAST)
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
-+ else {
-+ memfd = sys_memfd_create("my-name-is-nice", 1024 * 1024);
-+ if (memfd < 0) {
-+ kdbus_printf("failed to create memfd: %m\n");
-+ return memfd;
-+ }
-+
-+ if (write(memfd, "kdbus memfd 1234567", 19) != 19) {
-+ ret = -errno;
-+ kdbus_printf("writing to memfd failed: %m\n");
-+ goto out;
-+ }
-+
-+ ret = sys_memfd_seal_set(memfd);
-+ if (ret < 0) {
-+ ret = -errno;
-+ kdbus_printf("memfd sealing failed: %m\n");
-+ goto out;
-+ }
-+
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
-+ }
-+
-+ if (name)
-+ size += KDBUS_ITEM_SIZE(strlen(name) + 1);
-+
-+ msg = malloc(size);
-+ if (!msg) {
-+ ret = -errno;
-+ kdbus_printf("unable to malloc()!?\n");
-+ goto out;
-+ }
-+
-+ if (dst_id == KDBUS_DST_ID_BROADCAST)
-+ flags |= KDBUS_MSG_SIGNAL;
-+
-+ memset(msg, 0, size);
-+ msg->flags = flags;
-+ msg->priority = priority;
-+ msg->size = size;
-+ msg->src_id = conn->id;
-+ msg->dst_id = name ? 0 : dst_id;
-+ msg->cookie = cookie;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+
-+ if (timeout) {
-+ ret = clock_gettime(CLOCK_MONOTONIC_COARSE, &now);
-+ if (ret < 0)
-+ goto out;
-+
-+ msg->timeout_ns = now.tv_sec * 1000000000ULL +
-+ now.tv_nsec + timeout;
-+ }
-+
-+ item = msg->items;
-+
-+ if (name) {
-+ item->type = KDBUS_ITEM_DST_NAME;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
-+ strcpy(item->str, name);
-+ item = KDBUS_ITEM_NEXT(item);
-+ }
-+
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t)&ref1;
-+ item->vec.size = sizeof(ref1);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ /* data padding for ref1 */
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t)NULL;
-+ item->vec.size = KDBUS_ALIGN8(sizeof(ref1)) - sizeof(ref1);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t)&ref2;
-+ item->vec.size = sizeof(ref2);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ if (dst_id == KDBUS_DST_ID_BROADCAST) {
-+ item->type = KDBUS_ITEM_BLOOM_FILTER;
-+ item->size = KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
-+ item->bloom_filter.generation = 0;
-+ } else {
-+ item->type = KDBUS_ITEM_PAYLOAD_MEMFD;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_memfd);
-+ item->memfd.size = 16;
-+ item->memfd.fd = memfd;
-+ }
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ size = sizeof(*cmd);
-+ if (cancel_fd != -1)
-+ size += KDBUS_ITEM_SIZE(sizeof(cancel_fd));
-+
-+ cmd = malloc(size);
-+ if (!cmd) {
-+ ret = -errno;
-+ kdbus_printf("unable to malloc()!?\n");
-+ goto out;
-+ }
-+
-+ cmd->size = size;
-+ cmd->flags = cmd_flags;
-+ cmd->msg_address = (uintptr_t)msg;
-+
-+ item = cmd->items;
-+
-+ if (cancel_fd != -1) {
-+ item->type = KDBUS_ITEM_CANCEL_FD;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(cancel_fd);
-+ item->fds[0] = cancel_fd;
-+ item = KDBUS_ITEM_NEXT(item);
-+ }
-+
-+ ret = kdbus_cmd_send(conn->fd, cmd);
-+ if (ret < 0) {
-+ kdbus_printf("error sending message: %d (%m)\n", ret);
-+ goto out;
-+ }
-+
-+ if (cmd_flags & KDBUS_SEND_SYNC_REPLY) {
-+ struct kdbus_msg *reply;
-+
-+ kdbus_printf("SYNC REPLY @offset %llu:\n", cmd->reply.offset);
-+ reply = (struct kdbus_msg *)(conn->buf + cmd->reply.offset);
-+ kdbus_msg_dump(conn, reply);
-+
-+ kdbus_msg_free(reply);
-+
-+ ret = kdbus_free(conn, cmd->reply.offset);
-+ if (ret < 0)
-+ goto out;
-+ }
-+
-+out:
-+ free(msg);
-+ free(cmd);
-+
-+ if (memfd >= 0)
-+ close(memfd);
-+
-+ return ret < 0 ? ret : 0;
-+}
-+
-+int kdbus_msg_send(const struct kdbus_conn *conn, const char *name,
-+ uint64_t cookie, uint64_t flags, uint64_t timeout,
-+ int64_t priority, uint64_t dst_id)
-+{
-+ return __kdbus_msg_send(conn, name, cookie, flags, timeout, priority,
-+ dst_id, 0, -1);
-+}
-+
-+int kdbus_msg_send_sync(const struct kdbus_conn *conn, const char *name,
-+ uint64_t cookie, uint64_t flags, uint64_t timeout,
-+ int64_t priority, uint64_t dst_id, int cancel_fd)
-+{
-+ return __kdbus_msg_send(conn, name, cookie, flags, timeout, priority,
-+ dst_id, KDBUS_SEND_SYNC_REPLY, cancel_fd);
-+}
-+
-+int kdbus_msg_send_reply(const struct kdbus_conn *conn,
-+ uint64_t reply_cookie,
-+ uint64_t dst_id)
-+{
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_msg *msg;
-+ const char ref1[1024 * 128 + 3] = "0123456789_0";
-+ struct kdbus_item *item;
-+ uint64_t size;
-+ int ret;
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+
-+ msg = malloc(size);
-+ if (!msg) {
-+ kdbus_printf("unable to malloc()!?\n");
-+ return -ENOMEM;
-+ }
-+
-+ memset(msg, 0, size);
-+ msg->size = size;
-+ msg->src_id = conn->id;
-+ msg->dst_id = dst_id;
-+ msg->cookie_reply = reply_cookie;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+
-+ item = msg->items;
-+
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t)&ref1;
-+ item->vec.size = sizeof(ref1);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ ret = kdbus_cmd_send(conn->fd, &cmd);
-+ if (ret < 0)
-+ kdbus_printf("error sending message: %d (%m)\n", ret);
-+
-+ free(msg);
-+
-+ return ret;
-+}
-+
-+static char *msg_id(uint64_t id, char *buf)
-+{
-+ if (id == 0)
-+ return "KERNEL";
-+ if (id == ~0ULL)
-+ return "BROADCAST";
-+ sprintf(buf, "%llu", (unsigned long long)id);
-+ return buf;
-+}
-+
-+int kdbus_msg_dump(const struct kdbus_conn *conn, const struct kdbus_msg *msg)
-+{
-+ const struct kdbus_item *item = msg->items;
-+ char buf_src[32];
-+ char buf_dst[32];
-+ uint64_t timeout = 0;
-+ uint64_t cookie_reply = 0;
-+ int ret = 0;
-+
-+ if (msg->flags & KDBUS_MSG_EXPECT_REPLY)
-+ timeout = msg->timeout_ns;
-+ else
-+ cookie_reply = msg->cookie_reply;
-+
-+ kdbus_printf("MESSAGE: %s (%llu bytes) flags=0x%08llx, %s → %s, "
-+ "cookie=%llu, timeout=%llu cookie_reply=%llu priority=%lli\n",
-+ enum_PAYLOAD(msg->payload_type), (unsigned long long)msg->size,
-+ (unsigned long long)msg->flags,
-+ msg_id(msg->src_id, buf_src), msg_id(msg->dst_id, buf_dst),
-+ (unsigned long long)msg->cookie, (unsigned long long)timeout,
-+ (unsigned long long)cookie_reply, (long long)msg->priority);
-+
-+ KDBUS_ITEM_FOREACH(item, msg, items) {
-+ if (item->size < KDBUS_ITEM_HEADER_SIZE) {
-+ kdbus_printf(" +%s (%llu bytes) invalid data record\n",
-+ enum_MSG(item->type), item->size);
-+ ret = -EINVAL;
-+ break;
-+ }
-+
-+ switch (item->type) {
-+ case KDBUS_ITEM_PAYLOAD_OFF: {
-+ char *s;
-+
-+ if (item->vec.offset == ~0ULL)
-+ s = "[\\0-bytes]";
-+ else
-+ s = (char *)msg + item->vec.offset;
-+
-+ kdbus_printf(" +%s (%llu bytes) off=%llu size=%llu '%s'\n",
-+ enum_MSG(item->type), item->size,
-+ (unsigned long long)item->vec.offset,
-+ (unsigned long long)item->vec.size, s);
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_FDS: {
-+ int i, n = (item->size - KDBUS_ITEM_HEADER_SIZE) /
-+ sizeof(int);
-+
-+ kdbus_printf(" +%s (%llu bytes, %d fds)\n",
-+ enum_MSG(item->type), item->size, n);
-+
-+ for (i = 0; i < n; i++)
-+ kdbus_printf(" fd[%d] = %d\n",
-+ i, item->fds[i]);
-+
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_PAYLOAD_MEMFD: {
-+ char *buf;
-+ off_t size;
-+
-+ buf = mmap(NULL, item->memfd.size, PROT_READ,
-+ MAP_PRIVATE, item->memfd.fd, 0);
-+ if (buf == MAP_FAILED) {
-+ kdbus_printf("mmap() fd=%i size=%llu failed: %m\n",
-+ item->memfd.fd, item->memfd.size);
-+ break;
-+ }
-+
-+ if (sys_memfd_get_size(item->memfd.fd, &size) < 0) {
-+ kdbus_printf("KDBUS_CMD_MEMFD_SIZE_GET failed: %m\n");
-+ break;
-+ }
-+
-+ kdbus_printf(" +%s (%llu bytes) fd=%i size=%llu filesize=%llu '%s'\n",
-+ enum_MSG(item->type), item->size, item->memfd.fd,
-+ (unsigned long long)item->memfd.size,
-+ (unsigned long long)size, buf);
-+ munmap(buf, item->memfd.size);
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_CREDS:
-+ kdbus_printf(" +%s (%llu bytes) uid=%lld, euid=%lld, suid=%lld, fsuid=%lld, "
-+ "gid=%lld, egid=%lld, sgid=%lld, fsgid=%lld\n",
-+ enum_MSG(item->type), item->size,
-+ item->creds.uid, item->creds.euid,
-+ item->creds.suid, item->creds.fsuid,
-+ item->creds.gid, item->creds.egid,
-+ item->creds.sgid, item->creds.fsgid);
-+ break;
-+
-+ case KDBUS_ITEM_PIDS:
-+ kdbus_printf(" +%s (%llu bytes) pid=%lld, tid=%lld, ppid=%lld\n",
-+ enum_MSG(item->type), item->size,
-+ item->pids.pid, item->pids.tid,
-+ item->pids.ppid);
-+ break;
-+
-+ case KDBUS_ITEM_AUXGROUPS: {
-+ int i, n;
-+
-+ kdbus_printf(" +%s (%llu bytes)\n",
-+ enum_MSG(item->type), item->size);
-+ n = (item->size - KDBUS_ITEM_HEADER_SIZE) /
-+ sizeof(uint64_t);
-+
-+ for (i = 0; i < n; i++)
-+ kdbus_printf(" gid[%d] = %lld\n",
-+ i, item->data64[i]);
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_NAME:
-+ case KDBUS_ITEM_PID_COMM:
-+ case KDBUS_ITEM_TID_COMM:
-+ case KDBUS_ITEM_EXE:
-+ case KDBUS_ITEM_CGROUP:
-+ case KDBUS_ITEM_SECLABEL:
-+ case KDBUS_ITEM_DST_NAME:
-+ case KDBUS_ITEM_CONN_DESCRIPTION:
-+ kdbus_printf(" +%s (%llu bytes) '%s' (%zu)\n",
-+ enum_MSG(item->type), item->size,
-+ item->str, strlen(item->str));
-+ break;
-+
-+ case KDBUS_ITEM_OWNED_NAME: {
-+ kdbus_printf(" +%s (%llu bytes) '%s' (%zu) flags=0x%08llx\n",
-+ enum_MSG(item->type), item->size,
-+ item->name.name, strlen(item->name.name),
-+ item->name.flags);
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_CMDLINE: {
-+ size_t size = item->size - KDBUS_ITEM_HEADER_SIZE;
-+ const char *str = item->str;
-+ int count = 0;
-+
-+ kdbus_printf(" +%s (%llu bytes) ",
-+ enum_MSG(item->type), item->size);
-+ while (size) {
-+ kdbus_printf("'%s' ", str);
-+ size -= strlen(str) + 1;
-+ str += strlen(str) + 1;
-+ count++;
-+ }
-+
-+ kdbus_printf("(%d string%s)\n",
-+ count, (count == 1) ? "" : "s");
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_AUDIT:
-+ kdbus_printf(" +%s (%llu bytes) loginuid=%u sessionid=%u\n",
-+ enum_MSG(item->type), item->size,
-+ item->audit.loginuid, item->audit.sessionid);
-+ break;
-+
-+ case KDBUS_ITEM_CAPS: {
-+ const uint32_t *cap;
-+ int n, i;
-+
-+ kdbus_printf(" +%s (%llu bytes) len=%llu bytes, last_cap %d\n",
-+ enum_MSG(item->type), item->size,
-+ (unsigned long long)item->size -
-+ KDBUS_ITEM_HEADER_SIZE,
-+ (int) item->caps.last_cap);
-+
-+ cap = item->caps.caps;
-+ n = (item->size - offsetof(struct kdbus_item, caps.caps))
-+ / 4 / sizeof(uint32_t);
-+
-+ kdbus_printf(" CapInh=");
-+ for (i = 0; i < n; i++)
-+ kdbus_printf("%08x", cap[(0 * n) + (n - i - 1)]);
-+
-+ kdbus_printf(" CapPrm=");
-+ for (i = 0; i < n; i++)
-+ kdbus_printf("%08x", cap[(1 * n) + (n - i - 1)]);
-+
-+ kdbus_printf(" CapEff=");
-+ for (i = 0; i < n; i++)
-+ kdbus_printf("%08x", cap[(2 * n) + (n - i - 1)]);
-+
-+ kdbus_printf(" CapBnd=");
-+ for (i = 0; i < n; i++)
-+ kdbus_printf("%08x", cap[(3 * n) + (n - i - 1)]);
-+ kdbus_printf("\n");
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_TIMESTAMP:
-+ kdbus_printf(" +%s (%llu bytes) seq=%llu realtime=%lluns monotonic=%lluns\n",
-+ enum_MSG(item->type), item->size,
-+ (unsigned long long)item->timestamp.seqnum,
-+ (unsigned long long)item->timestamp.realtime_ns,
-+ (unsigned long long)item->timestamp.monotonic_ns);
-+ break;
-+
-+ case KDBUS_ITEM_REPLY_TIMEOUT:
-+ kdbus_printf(" +%s (%llu bytes) cookie=%llu\n",
-+ enum_MSG(item->type), item->size,
-+ msg->cookie_reply);
-+ break;
-+
-+ case KDBUS_ITEM_NAME_ADD:
-+ case KDBUS_ITEM_NAME_REMOVE:
-+ case KDBUS_ITEM_NAME_CHANGE:
-+ kdbus_printf(" +%s (%llu bytes) '%s', old id=%lld, now id=%lld, old_flags=0x%llx new_flags=0x%llx\n",
-+ enum_MSG(item->type),
-+ (unsigned long long) item->size,
-+ item->name_change.name,
-+ item->name_change.old_id.id,
-+ item->name_change.new_id.id,
-+ item->name_change.old_id.flags,
-+ item->name_change.new_id.flags);
-+ break;
-+
-+ case KDBUS_ITEM_ID_ADD:
-+ case KDBUS_ITEM_ID_REMOVE:
-+ kdbus_printf(" +%s (%llu bytes) id=%llu flags=%llu\n",
-+ enum_MSG(item->type),
-+ (unsigned long long) item->size,
-+ (unsigned long long) item->id_change.id,
-+ (unsigned long long) item->id_change.flags);
-+ break;
-+
-+ default:
-+ kdbus_printf(" +%s (%llu bytes)\n",
-+ enum_MSG(item->type), item->size);
-+ break;
-+ }
-+ }
-+
-+ if ((char *)item - ((char *)msg + msg->size) >= 8) {
-+ kdbus_printf("invalid padding at end of message\n");
-+ ret = -EINVAL;
-+ }
-+
-+ kdbus_printf("\n");
-+
-+ return ret;
-+}
-+
-+void kdbus_msg_free(struct kdbus_msg *msg)
-+{
-+ const struct kdbus_item *item;
-+ int nfds, i;
-+
-+ if (!msg)
-+ return;
-+
-+ KDBUS_ITEM_FOREACH(item, msg, items) {
-+ switch (item->type) {
-+ /* close all memfds */
-+ case KDBUS_ITEM_PAYLOAD_MEMFD:
-+ close(item->memfd.fd);
-+ break;
-+ case KDBUS_ITEM_FDS:
-+ nfds = (item->size - KDBUS_ITEM_HEADER_SIZE) /
-+ sizeof(int);
-+
-+ for (i = 0; i < nfds; i++)
-+ close(item->fds[i]);
-+
-+ break;
-+ }
-+ }
-+}
-+
-+int kdbus_msg_recv(struct kdbus_conn *conn,
-+ struct kdbus_msg **msg_out,
-+ uint64_t *offset)
-+{
-+ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
-+ struct kdbus_msg *msg;
-+ int ret;
-+
-+ ret = kdbus_cmd_recv(conn->fd, &recv);
-+ if (ret < 0)
-+ return ret;
-+
-+ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
-+ ret = kdbus_msg_dump(conn, msg);
-+ if (ret < 0) {
-+ kdbus_msg_free(msg);
-+ return ret;
-+ }
-+
-+ if (msg_out) {
-+ *msg_out = msg;
-+
-+ if (offset)
-+ *offset = recv.msg.offset;
-+ } else {
-+ kdbus_msg_free(msg);
-+
-+ ret = kdbus_free(conn, recv.msg.offset);
-+ if (ret < 0)
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+/*
-+ * Returns: 0 on success, negative errno on failure.
-+ *
-+ * We must return -ETIMEDOUT, -ECONNREST, -EAGAIN and other errors.
-+ * We must return the result of kdbus_msg_recv()
-+ */
-+int kdbus_msg_recv_poll(struct kdbus_conn *conn,
-+ int timeout_ms,
-+ struct kdbus_msg **msg_out,
-+ uint64_t *offset)
-+{
-+ int ret;
-+
-+ do {
-+ struct timeval before, after, diff;
-+ struct pollfd fd;
-+
-+ fd.fd = conn->fd;
-+ fd.events = POLLIN | POLLPRI | POLLHUP;
-+ fd.revents = 0;
-+
-+ gettimeofday(&before, NULL);
-+ ret = poll(&fd, 1, timeout_ms);
-+ gettimeofday(&after, NULL);
-+
-+ if (ret == 0) {
-+ ret = -ETIMEDOUT;
-+ break;
-+ }
-+
-+ if (ret > 0) {
-+ if (fd.revents & POLLIN)
-+ ret = kdbus_msg_recv(conn, msg_out, offset);
-+
-+ if (fd.revents & (POLLHUP | POLLERR))
-+ ret = -ECONNRESET;
-+ }
-+
-+ if (ret == 0 || ret != -EAGAIN)
-+ break;
-+
-+ timersub(&after, &before, &diff);
-+ timeout_ms -= diff.tv_sec * 1000UL +
-+ diff.tv_usec / 1000UL;
-+ } while (timeout_ms > 0);
-+
-+ return ret;
-+}
-+
-+int kdbus_free(const struct kdbus_conn *conn, uint64_t offset)
-+{
-+ struct kdbus_cmd_free cmd_free = {};
-+ int ret;
-+
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.offset = offset;
-+ cmd_free.flags = 0;
-+
-+ ret = kdbus_cmd_free(conn->fd, &cmd_free);
-+ if (ret < 0) {
-+ kdbus_printf("KDBUS_CMD_FREE failed: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+int kdbus_name_acquire(struct kdbus_conn *conn,
-+ const char *name, uint64_t *flags)
-+{
-+ struct kdbus_cmd *cmd_name;
-+ size_t name_len = strlen(name) + 1;
-+ uint64_t size = sizeof(*cmd_name) + KDBUS_ITEM_SIZE(name_len);
-+ struct kdbus_item *item;
-+ int ret;
-+
-+ cmd_name = alloca(size);
-+
-+ memset(cmd_name, 0, size);
-+
-+ item = cmd_name->items;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + name_len;
-+ item->type = KDBUS_ITEM_NAME;
-+ strcpy(item->str, name);
-+
-+ cmd_name->size = size;
-+ if (flags)
-+ cmd_name->flags = *flags;
-+
-+ ret = kdbus_cmd_name_acquire(conn->fd, cmd_name);
-+ if (ret < 0) {
-+ kdbus_printf("error aquiring name: %s\n", strerror(-ret));
-+ return ret;
-+ }
-+
-+ kdbus_printf("%s(): flags after call: 0x%llx\n", __func__,
-+ cmd_name->return_flags);
-+
-+ if (flags)
-+ *flags = cmd_name->return_flags;
-+
-+ return 0;
-+}
-+
-+int kdbus_name_release(struct kdbus_conn *conn, const char *name)
-+{
-+ struct kdbus_cmd *cmd_name;
-+ size_t name_len = strlen(name) + 1;
-+ uint64_t size = sizeof(*cmd_name) + KDBUS_ITEM_SIZE(name_len);
-+ struct kdbus_item *item;
-+ int ret;
-+
-+ cmd_name = alloca(size);
-+
-+ memset(cmd_name, 0, size);
-+
-+ item = cmd_name->items;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + name_len;
-+ item->type = KDBUS_ITEM_NAME;
-+ strcpy(item->str, name);
-+
-+ cmd_name->size = size;
-+
-+ kdbus_printf("conn %lld giving up name '%s'\n",
-+ (unsigned long long) conn->id, name);
-+
-+ ret = kdbus_cmd_name_release(conn->fd, cmd_name);
-+ if (ret < 0) {
-+ kdbus_printf("error releasing name: %s\n", strerror(-ret));
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+int kdbus_list(struct kdbus_conn *conn, uint64_t flags)
-+{
-+ struct kdbus_cmd_list cmd_list = {};
-+ struct kdbus_info *list, *name;
-+ int ret;
-+
-+ cmd_list.size = sizeof(cmd_list);
-+ cmd_list.flags = flags;
-+
-+ ret = kdbus_cmd_list(conn->fd, &cmd_list);
-+ if (ret < 0) {
-+ kdbus_printf("error listing names: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ kdbus_printf("REGISTRY:\n");
-+ list = (struct kdbus_info *)(conn->buf + cmd_list.offset);
-+
-+ KDBUS_FOREACH(name, list, cmd_list.list_size) {
-+ uint64_t flags = 0;
-+ struct kdbus_item *item;
-+ const char *n = "MISSING-NAME";
-+
-+ if (name->size == sizeof(struct kdbus_cmd))
-+ continue;
-+
-+ KDBUS_ITEM_FOREACH(item, name, items)
-+ if (item->type == KDBUS_ITEM_OWNED_NAME) {
-+ n = item->name.name;
-+ flags = item->name.flags;
-+
-+ kdbus_printf("%8llu flags=0x%08llx conn=0x%08llx '%s'\n",
-+ name->id,
-+ (unsigned long long) flags,
-+ name->flags, n);
-+ }
-+ }
-+ kdbus_printf("\n");
-+
-+ ret = kdbus_free(conn, cmd_list.offset);
-+
-+ return ret;
-+}
-+
-+int kdbus_conn_update_attach_flags(struct kdbus_conn *conn,
-+ uint64_t attach_flags_send,
-+ uint64_t attach_flags_recv)
-+{
-+ int ret;
-+ size_t size;
-+ struct kdbus_cmd *update;
-+ struct kdbus_item *item;
-+
-+ size = sizeof(struct kdbus_cmd);
-+ size += KDBUS_ITEM_SIZE(sizeof(uint64_t)) * 2;
-+
-+ update = malloc(size);
-+ if (!update) {
-+ kdbus_printf("error malloc: %m\n");
-+ return -ENOMEM;
-+ }
-+
-+ memset(update, 0, size);
-+ update->size = size;
-+
-+ item = update->items;
-+
-+ item->type = KDBUS_ITEM_ATTACH_FLAGS_SEND;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(uint64_t);
-+ item->data64[0] = attach_flags_send;
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ item->type = KDBUS_ITEM_ATTACH_FLAGS_RECV;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(uint64_t);
-+ item->data64[0] = attach_flags_recv;
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ ret = kdbus_cmd_update(conn->fd, update);
-+ if (ret < 0)
-+ kdbus_printf("error conn update: %d (%m)\n", ret);
-+
-+ free(update);
-+
-+ return ret;
-+}
-+
-+int kdbus_conn_update_policy(struct kdbus_conn *conn, const char *name,
-+ const struct kdbus_policy_access *access,
-+ size_t num_access)
-+{
-+ struct kdbus_cmd *update;
-+ struct kdbus_item *item;
-+ size_t i, size;
-+ int ret;
-+
-+ size = sizeof(struct kdbus_cmd);
-+ size += KDBUS_ITEM_SIZE(strlen(name) + 1);
-+ size += num_access * KDBUS_ITEM_SIZE(sizeof(struct kdbus_policy_access));
-+
-+ update = malloc(size);
-+ if (!update) {
-+ kdbus_printf("error malloc: %m\n");
-+ return -ENOMEM;
-+ }
-+
-+ memset(update, 0, size);
-+ update->size = size;
-+
-+ item = update->items;
-+
-+ item->type = KDBUS_ITEM_NAME;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
-+ strcpy(item->str, name);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ for (i = 0; i < num_access; i++) {
-+ item->size = KDBUS_ITEM_HEADER_SIZE +
-+ sizeof(struct kdbus_policy_access);
-+ item->type = KDBUS_ITEM_POLICY_ACCESS;
-+
-+ item->policy_access.type = access[i].type;
-+ item->policy_access.access = access[i].access;
-+ item->policy_access.id = access[i].id;
-+
-+ item = KDBUS_ITEM_NEXT(item);
-+ }
-+
-+ ret = kdbus_cmd_update(conn->fd, update);
-+ if (ret < 0)
-+ kdbus_printf("error conn update: %d (%m)\n", ret);
-+
-+ free(update);
-+
-+ return ret;
-+}
-+
-+int kdbus_add_match_id(struct kdbus_conn *conn, uint64_t cookie,
-+ uint64_t type, uint64_t id)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_notify_id_change chg;
-+ } item;
-+ } buf;
-+ int ret;
-+
-+ memset(&buf, 0, sizeof(buf));
-+
-+ buf.cmd.size = sizeof(buf);
-+ buf.cmd.cookie = cookie;
-+ buf.item.size = sizeof(buf.item);
-+ buf.item.type = type;
-+ buf.item.chg.id = id;
-+
-+ ret = kdbus_cmd_match_add(conn->fd, &buf.cmd);
-+ if (ret < 0)
-+ kdbus_printf("--- error adding conn match: %d (%m)\n", ret);
-+
-+ return ret;
-+}
-+
-+int kdbus_add_match_empty(struct kdbus_conn *conn)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct kdbus_item item;
-+ } buf;
-+ int ret;
-+
-+ memset(&buf, 0, sizeof(buf));
-+
-+ buf.item.size = sizeof(uint64_t) * 3;
-+ buf.item.type = KDBUS_ITEM_ID;
-+ buf.item.id = KDBUS_MATCH_ID_ANY;
-+
-+ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
-+
-+ ret = kdbus_cmd_match_add(conn->fd, &buf.cmd);
-+ if (ret < 0)
-+ kdbus_printf("--- error adding conn match: %d (%m)\n", ret);
-+
-+ return ret;
-+}
-+
-+static int all_ids_are_mapped(const char *path)
-+{
-+ int ret;
-+ FILE *file;
-+ uint32_t inside_id, length;
-+
-+ file = fopen(path, "r");
-+ if (!file) {
-+ ret = -errno;
-+ kdbus_printf("error fopen() %s: %d (%m)\n",
-+ path, ret);
-+ return ret;
-+ }
-+
-+ ret = fscanf(file, "%u\t%*u\t%u", &inside_id, &length);
-+ if (ret != 2) {
-+ if (ferror(file))
-+ ret = -errno;
-+ else
-+ ret = -EIO;
-+
-+ kdbus_printf("--- error fscanf(): %d\n", ret);
-+ fclose(file);
-+ return ret;
-+ }
-+
-+ fclose(file);
-+
-+ /*
-+ * If length is 4294967295 which means the invalid uid
-+ * (uid_t) -1 then we are able to map all uid/gids
-+ */
-+ if (inside_id == 0 && length == (uid_t) -1)
-+ return 1;
-+
-+ return 0;
-+}
-+
-+int all_uids_gids_are_mapped(void)
-+{
-+ int ret;
-+
-+ ret = all_ids_are_mapped("/proc/self/uid_map");
-+ if (ret <= 0) {
-+ kdbus_printf("--- error not all uids are mapped\n");
-+ return 0;
-+ }
-+
-+ ret = all_ids_are_mapped("/proc/self/gid_map");
-+ if (ret <= 0) {
-+ kdbus_printf("--- error not all gids are mapped\n");
-+ return 0;
-+ }
-+
-+ return 1;
-+}
-+
-+int drop_privileges(uid_t uid, gid_t gid)
-+{
-+ int ret;
-+
-+ ret = setgroups(0, NULL);
-+ if (ret < 0) {
-+ ret = -errno;
-+ kdbus_printf("error setgroups: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ ret = setresgid(gid, gid, gid);
-+ if (ret < 0) {
-+ ret = -errno;
-+ kdbus_printf("error setresgid: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ ret = setresuid(uid, uid, uid);
-+ if (ret < 0) {
-+ ret = -errno;
-+ kdbus_printf("error setresuid: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ return ret;
-+}
-+
-+uint64_t now(clockid_t clock)
-+{
-+ struct timespec spec;
-+
-+ clock_gettime(clock, &spec);
-+ return spec.tv_sec * 1000ULL * 1000ULL * 1000ULL + spec.tv_nsec;
-+}
-+
-+char *unique_name(const char *prefix)
-+{
-+ unsigned int i;
-+ uint64_t u_now;
-+ char n[17];
-+ char *str;
-+ int r;
-+
-+ /*
-+ * This returns a random string which is guaranteed to be
-+ * globally unique across all calls to unique_name(). We
-+ * compose the string as:
-+ * <prefix>-<random>-<time>
-+ * With:
-+ * <prefix>: string provided by the caller
-+ * <random>: a random alpha string of 16 characters
-+ * <time>: the current time in micro-seconds since last boot
-+ *
-+ * The <random> part makes the string always look vastly different,
-+ * the <time> part makes sure no two calls return the same string.
-+ */
-+
-+ u_now = now(CLOCK_MONOTONIC);
-+
-+ for (i = 0; i < sizeof(n) - 1; ++i)
-+ n[i] = 'a' + (rand() % ('z' - 'a'));
-+ n[sizeof(n) - 1] = 0;
-+
-+ r = asprintf(&str, "%s-%s-%" PRIu64, prefix, n, u_now);
-+ if (r < 0)
-+ return NULL;
-+
-+ return str;
-+}
-+
-+static int do_userns_map_id(pid_t pid,
-+ const char *map_file,
-+ const char *map_id)
-+{
-+ int ret;
-+ int fd;
-+ char *map;
-+ unsigned int i;
-+
-+ map = strndupa(map_id, strlen(map_id));
-+ if (!map) {
-+ ret = -errno;
-+ kdbus_printf("error strndupa %s: %d (%m)\n",
-+ map_file, ret);
-+ return ret;
-+ }
-+
-+ for (i = 0; i < strlen(map); i++)
-+ if (map[i] == ',')
-+ map[i] = '\n';
-+
-+ fd = open(map_file, O_RDWR);
-+ if (fd < 0) {
-+ ret = -errno;
-+ kdbus_printf("error open %s: %d (%m)\n",
-+ map_file, ret);
-+ return ret;
-+ }
-+
-+ ret = write(fd, map, strlen(map));
-+ if (ret < 0) {
-+ ret = -errno;
-+ kdbus_printf("error write to %s: %d (%m)\n",
-+ map_file, ret);
-+ goto out;
-+ }
-+
-+ ret = 0;
-+
-+out:
-+ close(fd);
-+ return ret;
-+}
-+
-+int userns_map_uid_gid(pid_t pid,
-+ const char *map_uid,
-+ const char *map_gid)
-+{
-+ int fd, ret;
-+ char file_id[128] = {'\0'};
-+
-+ snprintf(file_id, sizeof(file_id), "/proc/%ld/uid_map",
-+ (long) pid);
-+
-+ ret = do_userns_map_id(pid, file_id, map_uid);
-+ if (ret < 0)
-+ return ret;
-+
-+ snprintf(file_id, sizeof(file_id), "/proc/%ld/setgroups",
-+ (long) pid);
-+
-+ fd = open(file_id, O_WRONLY);
-+ if (fd >= 0) {
-+ write(fd, "deny\n", 5);
-+ close(fd);
-+ }
-+
-+ snprintf(file_id, sizeof(file_id), "/proc/%ld/gid_map",
-+ (long) pid);
-+
-+ return do_userns_map_id(pid, file_id, map_gid);
-+}
-+
-+static int do_cap_get_flag(cap_t caps, cap_value_t cap)
-+{
-+ int ret;
-+ cap_flag_value_t flag_set;
-+
-+ ret = cap_get_flag(caps, cap, CAP_EFFECTIVE, &flag_set);
-+ if (ret < 0) {
-+ ret = -errno;
-+ kdbus_printf("error cap_get_flag(): %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ return (flag_set == CAP_SET);
-+}
-+
-+/*
-+ * Returns:
-+ * 1 in case all the requested effective capabilities are set.
-+ * 0 in case we do not have the requested capabilities. This value
-+ * will be used to abort tests with TEST_SKIP
-+ * Negative errno on failure.
-+ *
-+ * Terminate args with a negative value.
-+ */
-+int test_is_capable(int cap, ...)
-+{
-+ int ret;
-+ va_list ap;
-+ cap_t caps;
-+
-+ caps = cap_get_proc();
-+ if (!caps) {
-+ ret = -errno;
-+ kdbus_printf("error cap_get_proc(): %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ ret = do_cap_get_flag(caps, (cap_value_t)cap);
-+ if (ret <= 0)
-+ goto out;
-+
-+ va_start(ap, cap);
-+ while ((cap = va_arg(ap, int)) > 0) {
-+ ret = do_cap_get_flag(caps, (cap_value_t)cap);
-+ if (ret <= 0)
-+ break;
-+ }
-+ va_end(ap);
-+
-+out:
-+ cap_free(caps);
-+ return ret;
-+}
-+
-+int config_user_ns_is_enabled(void)
-+{
-+ return (access("/proc/self/uid_map", F_OK) == 0);
-+}
-+
-+int config_auditsyscall_is_enabled(void)
-+{
-+ return (access("/proc/self/loginuid", F_OK) == 0);
-+}
-+
-+int config_cgroups_is_enabled(void)
-+{
-+ return (access("/proc/self/cgroup", F_OK) == 0);
-+}
-+
-+int config_security_is_enabled(void)
-+{
-+ int fd;
-+ int ret;
-+ char buf[128];
-+
-+ /* CONFIG_SECURITY is disabled */
-+ if (access("/proc/self/attr/current", F_OK) != 0)
-+ return 0;
-+
-+ /*
-+ * Now only if read() fails with -EINVAL then we assume
-+ * that SECLABEL and LSM are disabled
-+ */
-+ fd = open("/proc/self/attr/current", O_RDONLY|O_CLOEXEC);
-+ if (fd < 0)
-+ return 1;
-+
-+ ret = read(fd, buf, sizeof(buf));
-+ if (ret == -1 && errno == EINVAL)
-+ ret = 0;
-+ else
-+ ret = 1;
-+
-+ close(fd);
-+
-+ return ret;
-+}
-diff --git a/tools/testing/selftests/kdbus/kdbus-util.h b/tools/testing/selftests/kdbus/kdbus-util.h
-new file mode 100644
-index 0000000..e1e18b9
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/kdbus-util.h
-@@ -0,0 +1,218 @@
-+/*
-+ * Copyright (C) 2013-2015 Kay Sievers
-+ * Copyright (C) 2013-2015 Daniel Mack
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#pragma once
-+
-+#define BIT(X) (1 << (X))
-+
-+#include <time.h>
-+#include <stdbool.h>
-+#include <linux/kdbus.h>
-+
-+#define _STRINGIFY(x) #x
-+#define STRINGIFY(x) _STRINGIFY(x)
-+#define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
-+
-+#define KDBUS_PTR(addr) ((void *)(uintptr_t)(addr))
-+
-+#define KDBUS_ALIGN8(l) (((l) + 7) & ~7)
-+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
-+#define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
-+
-+#define KDBUS_ITEM_NEXT(item) \
-+ (typeof(item))((uint8_t *)(item) + KDBUS_ALIGN8((item)->size))
-+#define KDBUS_ITEM_FOREACH(item, head, first) \
-+ for ((item) = (head)->first; \
-+ ((uint8_t *)(item) < (uint8_t *)(head) + (head)->size) && \
-+ ((uint8_t *)(item) >= (uint8_t *)(head)); \
-+ (item) = KDBUS_ITEM_NEXT(item))
-+#define KDBUS_FOREACH(iter, first, _size) \
-+ for ((iter) = (first); \
-+ ((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
-+ ((uint8_t *)(iter) >= (uint8_t *)(first)); \
-+ (iter) = (void *)((uint8_t *)(iter) + KDBUS_ALIGN8((iter)->size)))
-+
-+#define _KDBUS_ATTACH_BITS_SET_NR (__builtin_popcountll(_KDBUS_ATTACH_ALL))
-+
-+/* Sum of KDBUS_ITEM_* that reflects _KDBUS_ATTACH_ALL */
-+#define KDBUS_ATTACH_ITEMS_TYPE_SUM \
-+ ((((_KDBUS_ATTACH_BITS_SET_NR - 1) * \
-+ ((_KDBUS_ATTACH_BITS_SET_NR - 1) + 1)) / 2) + \
-+ (_KDBUS_ITEM_ATTACH_BASE * _KDBUS_ATTACH_BITS_SET_NR))
-+
-+#define POOL_SIZE (16 * 1024LU * 1024LU)
-+
-+#define UNPRIV_UID 65534
-+#define UNPRIV_GID 65534
-+
-+/* Dump as user of process, useful for user namespace testing */
-+#define SUID_DUMP_USER 1
-+
-+extern int kdbus_util_verbose;
-+
-+#define kdbus_printf(X...) \
-+ if (kdbus_util_verbose) \
-+ printf(X)
-+
-+#define RUN_UNPRIVILEGED(child_uid, child_gid, _child_, _parent_) ({ \
-+ pid_t pid, rpid; \
-+ int ret; \
-+ \
-+ pid = fork(); \
-+ if (pid == 0) { \
-+ ret = drop_privileges(child_uid, child_gid); \
-+ ASSERT_EXIT_VAL(ret == 0, ret); \
-+ \
-+ _child_; \
-+ _exit(0); \
-+ } else if (pid > 0) { \
-+ _parent_; \
-+ rpid = waitpid(pid, &ret, 0); \
-+ ASSERT_RETURN(rpid == pid); \
-+ ASSERT_RETURN(WIFEXITED(ret)); \
-+ ASSERT_RETURN(WEXITSTATUS(ret) == 0); \
-+ ret = TEST_OK; \
-+ } else { \
-+ ret = pid; \
-+ } \
-+ \
-+ ret; \
-+ })
-+
-+#define RUN_UNPRIVILEGED_CONN(_var_, _bus_, _code_) \
-+ RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({ \
-+ struct kdbus_conn *_var_; \
-+ _var_ = kdbus_hello(_bus_, 0, NULL, 0); \
-+ ASSERT_EXIT(_var_); \
-+ _code_; \
-+ kdbus_conn_free(_var_); \
-+ }), ({ 0; }))
-+
-+#define RUN_CLONE_CHILD(clone_ret, flags, _setup_, _child_body_, \
-+ _parent_setup_, _parent_body_) ({ \
-+ pid_t pid, rpid; \
-+ int ret; \
-+ int efd = -1; \
-+ \
-+ _setup_; \
-+ efd = eventfd(0, EFD_CLOEXEC); \
-+ ASSERT_RETURN(efd >= 0); \
-+ *(clone_ret) = 0; \
-+ pid = syscall(__NR_clone, flags, NULL); \
-+ if (pid == 0) { \
-+ eventfd_t event_status = 0; \
-+ ret = prctl(PR_SET_PDEATHSIG, SIGKILL); \
-+ ASSERT_EXIT(ret == 0); \
-+ ret = eventfd_read(efd, &event_status); \
-+ if (ret < 0 || event_status != 1) { \
-+ kdbus_printf("error eventfd_read()\n"); \
-+ _exit(EXIT_FAILURE); \
-+ } \
-+ _child_body_; \
-+ _exit(0); \
-+ } else if (pid > 0) { \
-+ _parent_setup_; \
-+ ret = eventfd_write(efd, 1); \
-+ ASSERT_RETURN(ret >= 0); \
-+ _parent_body_; \
-+ rpid = waitpid(pid, &ret, 0); \
-+ ASSERT_RETURN(rpid == pid); \
-+ ASSERT_RETURN(WIFEXITED(ret)); \
-+ ASSERT_RETURN(WEXITSTATUS(ret) == 0); \
-+ ret = TEST_OK; \
-+ } else { \
-+ ret = -errno; \
-+ *(clone_ret) = -errno; \
-+ } \
-+ close(efd); \
-+ ret; \
-+})
-+
-+/* Enums for parent if it should drop privs or not */
-+enum kdbus_drop_parent {
-+ DO_NOT_DROP,
-+ DROP_SAME_UNPRIV,
-+ DROP_OTHER_UNPRIV,
-+};
-+
-+struct kdbus_conn {
-+ int fd;
-+ uint64_t id;
-+ unsigned char *buf;
-+};
-+
-+int kdbus_sysfs_get_parameter_mask(const char *path, uint64_t *mask);
-+int kdbus_sysfs_set_parameter_mask(const char *path, uint64_t mask);
-+
-+int sys_memfd_create(const char *name, __u64 size);
-+int sys_memfd_seal_set(int fd);
-+off_t sys_memfd_get_size(int fd, off_t *size);
-+
-+int kdbus_list(struct kdbus_conn *conn, uint64_t flags);
-+int kdbus_name_release(struct kdbus_conn *conn, const char *name);
-+int kdbus_name_acquire(struct kdbus_conn *conn, const char *name,
-+ uint64_t *flags);
-+void kdbus_msg_free(struct kdbus_msg *msg);
-+int kdbus_msg_recv(struct kdbus_conn *conn,
-+ struct kdbus_msg **msg, uint64_t *offset);
-+int kdbus_msg_recv_poll(struct kdbus_conn *conn, int timeout_ms,
-+ struct kdbus_msg **msg_out, uint64_t *offset);
-+int kdbus_free(const struct kdbus_conn *conn, uint64_t offset);
-+int kdbus_msg_dump(const struct kdbus_conn *conn,
-+ const struct kdbus_msg *msg);
-+int kdbus_create_bus(int control_fd, const char *name,
-+ uint64_t owner_meta, char **path);
-+int kdbus_msg_send(const struct kdbus_conn *conn, const char *name,
-+ uint64_t cookie, uint64_t flags, uint64_t timeout,
-+ int64_t priority, uint64_t dst_id);
-+int kdbus_msg_send_sync(const struct kdbus_conn *conn, const char *name,
-+ uint64_t cookie, uint64_t flags, uint64_t timeout,
-+ int64_t priority, uint64_t dst_id, int cancel_fd);
-+int kdbus_msg_send_reply(const struct kdbus_conn *conn,
-+ uint64_t reply_cookie,
-+ uint64_t dst_id);
-+struct kdbus_conn *kdbus_hello(const char *path, uint64_t hello_flags,
-+ const struct kdbus_item *item,
-+ size_t item_size);
-+struct kdbus_conn *kdbus_hello_registrar(const char *path, const char *name,
-+ const struct kdbus_policy_access *access,
-+ size_t num_access, uint64_t flags);
-+struct kdbus_conn *kdbus_hello_activator(const char *path, const char *name,
-+ const struct kdbus_policy_access *access,
-+ size_t num_access);
-+bool kdbus_item_in_message(struct kdbus_msg *msg, uint64_t type);
-+int kdbus_bus_creator_info(struct kdbus_conn *conn,
-+ uint64_t flags,
-+ uint64_t *offset);
-+int kdbus_conn_info(struct kdbus_conn *conn, uint64_t id,
-+ const char *name, uint64_t flags, uint64_t *offset);
-+void kdbus_conn_free(struct kdbus_conn *conn);
-+int kdbus_conn_update_attach_flags(struct kdbus_conn *conn,
-+ uint64_t attach_flags_send,
-+ uint64_t attach_flags_recv);
-+int kdbus_conn_update_policy(struct kdbus_conn *conn, const char *name,
-+ const struct kdbus_policy_access *access,
-+ size_t num_access);
-+
-+int kdbus_add_match_id(struct kdbus_conn *conn, uint64_t cookie,
-+ uint64_t type, uint64_t id);
-+int kdbus_add_match_empty(struct kdbus_conn *conn);
-+
-+int all_uids_gids_are_mapped(void);
-+int drop_privileges(uid_t uid, gid_t gid);
-+uint64_t now(clockid_t clock);
-+char *unique_name(const char *prefix);
-+
-+int userns_map_uid_gid(pid_t pid, const char *map_uid, const char *map_gid);
-+int test_is_capable(int cap, ...);
-+int config_user_ns_is_enabled(void);
-+int config_auditsyscall_is_enabled(void);
-+int config_cgroups_is_enabled(void);
-+int config_security_is_enabled(void);
-diff --git a/tools/testing/selftests/kdbus/test-activator.c b/tools/testing/selftests/kdbus/test-activator.c
-new file mode 100644
-index 0000000..3d1b763
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-activator.c
-@@ -0,0 +1,318 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stdbool.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <poll.h>
-+#include <sys/capability.h>
-+#include <sys/types.h>
-+#include <sys/wait.h>
-+
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+static int kdbus_starter_poll(struct kdbus_conn *conn)
-+{
-+ int ret;
-+ struct pollfd fd;
-+
-+ fd.fd = conn->fd;
-+ fd.events = POLLIN | POLLPRI | POLLHUP;
-+ fd.revents = 0;
-+
-+ ret = poll(&fd, 1, 100);
-+ if (ret == 0)
-+ return -ETIMEDOUT;
-+ else if (ret > 0) {
-+ if (fd.revents & POLLIN)
-+ return 0;
-+
-+ if (fd.revents & (POLLHUP | POLLERR))
-+ ret = -ECONNRESET;
-+ }
-+
-+ return ret;
-+}
-+
-+/* Ensure that kdbus activator logic is safe */
-+static int kdbus_priv_activator(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ struct kdbus_msg *msg = NULL;
-+ uint64_t cookie = 0xdeadbeef;
-+ uint64_t flags = KDBUS_NAME_REPLACE_EXISTING;
-+ struct kdbus_conn *activator;
-+ struct kdbus_conn *service;
-+ struct kdbus_conn *client;
-+ struct kdbus_conn *holder;
-+ struct kdbus_policy_access *access;
-+
-+ access = (struct kdbus_policy_access[]){
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = getuid(),
-+ .access = KDBUS_POLICY_OWN,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = getuid(),
-+ .access = KDBUS_POLICY_TALK,
-+ },
-+ };
-+
-+ activator = kdbus_hello_activator(env->buspath, "foo.priv.activator",
-+ access, 2);
-+ ASSERT_RETURN(activator);
-+
-+ service = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(service);
-+
-+ client = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(client);
-+
-+ /*
-+ * Make sure that other users can't TALK to the activator
-+ */
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ /* Try to talk using the ID */
-+ ret = kdbus_msg_send(unpriv, NULL, 0xdeadbeef, 0, 0,
-+ 0, activator->id);
-+ ASSERT_EXIT(ret == -ENXIO);
-+
-+ /* Try to talk to the name */
-+ ret = kdbus_msg_send(unpriv, "foo.priv.activator",
-+ 0xdeadbeef, 0, 0, 0,
-+ KDBUS_DST_ID_NAME);
-+ ASSERT_EXIT(ret == -EPERM);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure that we did not receive anything, so the
-+ * service will not be started automatically
-+ */
-+
-+ ret = kdbus_starter_poll(activator);
-+ ASSERT_RETURN(ret == -ETIMEDOUT);
-+
-+ /*
-+ * Now try to emulate the starter/service logic and
-+ * acquire the name.
-+ */
-+
-+ cookie++;
-+ ret = kdbus_msg_send(service, "foo.priv.activator", cookie,
-+ 0, 0, 0, KDBUS_DST_ID_NAME);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_starter_poll(activator);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Policies are still checked, access denied */
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "foo.priv.activator",
-+ &flags);
-+ ASSERT_RETURN(ret == -EPERM);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_name_acquire(service, "foo.priv.activator",
-+ &flags);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* We read our previous starter message */
-+
-+ ret = kdbus_msg_recv_poll(service, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Try to talk, we still fail */
-+
-+ cookie++;
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ /* Try to talk to the name */
-+ ret = kdbus_msg_send(unpriv, "foo.priv.activator",
-+ cookie, 0, 0, 0,
-+ KDBUS_DST_ID_NAME);
-+ ASSERT_EXIT(ret == -EPERM);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /* Still nothing to read */
-+
-+ ret = kdbus_msg_recv_poll(service, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == -ETIMEDOUT);
-+
-+ /* We receive every thing now */
-+
-+ cookie++;
-+ ret = kdbus_msg_send(client, "foo.priv.activator", cookie,
-+ 0, 0, 0, KDBUS_DST_ID_NAME);
-+ ASSERT_RETURN(ret == 0);
-+ ret = kdbus_msg_recv_poll(service, 100, &msg, NULL);
-+ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ /* Policies default to deny TALK now */
-+ kdbus_conn_free(activator);
-+
-+ cookie++;
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ /* Try to talk to the name */
-+ ret = kdbus_msg_send(unpriv, "foo.priv.activator",
-+ cookie, 0, 0, 0,
-+ KDBUS_DST_ID_NAME);
-+ ASSERT_EXIT(ret == -EPERM);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(service, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == -ETIMEDOUT);
-+
-+ /* Same user is able to TALK */
-+ cookie++;
-+ ret = kdbus_msg_send(client, "foo.priv.activator", cookie,
-+ 0, 0, 0, KDBUS_DST_ID_NAME);
-+ ASSERT_RETURN(ret == 0);
-+ ret = kdbus_msg_recv_poll(service, 100, &msg, NULL);
-+ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ access = (struct kdbus_policy_access []){
-+ {
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = getuid(),
-+ .access = KDBUS_POLICY_TALK,
-+ },
-+ };
-+
-+ holder = kdbus_hello_registrar(env->buspath, "foo.priv.activator",
-+ access, 1, KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(holder);
-+
-+ /* Now we are able to TALK to the name */
-+
-+ cookie++;
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ /* Try to talk to the name */
-+ ret = kdbus_msg_send(unpriv, "foo.priv.activator",
-+ cookie, 0, 0, 0,
-+ KDBUS_DST_ID_NAME);
-+ ASSERT_EXIT(ret == 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(service, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "foo.priv.activator",
-+ &flags);
-+ ASSERT_RETURN(ret == -EPERM);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ kdbus_conn_free(service);
-+ kdbus_conn_free(client);
-+ kdbus_conn_free(holder);
-+
-+ return 0;
-+}
-+
-+int kdbus_test_activator(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ struct kdbus_conn *activator;
-+ struct pollfd fds[2];
-+ bool activator_done = false;
-+ struct kdbus_policy_access access[2];
-+
-+ access[0].type = KDBUS_POLICY_ACCESS_USER;
-+ access[0].id = getuid();
-+ access[0].access = KDBUS_POLICY_OWN;
-+
-+ access[1].type = KDBUS_POLICY_ACCESS_WORLD;
-+ access[1].access = KDBUS_POLICY_TALK;
-+
-+ activator = kdbus_hello_activator(env->buspath, "foo.test.activator",
-+ access, 2);
-+ ASSERT_RETURN(activator);
-+
-+ ret = kdbus_add_match_empty(env->conn);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_list(env->conn, KDBUS_LIST_NAMES |
-+ KDBUS_LIST_UNIQUE |
-+ KDBUS_LIST_ACTIVATORS |
-+ KDBUS_LIST_QUEUED);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_send(env->conn, "foo.test.activator", 0xdeafbeef,
-+ 0, 0, 0, KDBUS_DST_ID_NAME);
-+ ASSERT_RETURN(ret == 0);
-+
-+ fds[0].fd = activator->fd;
-+ fds[1].fd = env->conn->fd;
-+
-+ kdbus_printf("-- entering poll loop ...\n");
-+
-+ for (;;) {
-+ int i, nfds = sizeof(fds) / sizeof(fds[0]);
-+
-+ for (i = 0; i < nfds; i++) {
-+ fds[i].events = POLLIN | POLLPRI;
-+ fds[i].revents = 0;
-+ }
-+
-+ ret = poll(fds, nfds, 3000);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_list(env->conn, KDBUS_LIST_NAMES);
-+ ASSERT_RETURN(ret == 0);
-+
-+ if ((fds[0].revents & POLLIN) && !activator_done) {
-+ uint64_t flags = KDBUS_NAME_REPLACE_EXISTING;
-+
-+ kdbus_printf("Starter was called back!\n");
-+
-+ ret = kdbus_name_acquire(env->conn,
-+ "foo.test.activator", &flags);
-+ ASSERT_RETURN(ret == 0);
-+
-+ activator_done = true;
-+ }
-+
-+ if (fds[1].revents & POLLIN) {
-+ kdbus_msg_recv(env->conn, NULL, NULL);
-+ break;
-+ }
-+ }
-+
-+ /* Check if all uids/gids are mapped */
-+ if (!all_uids_gids_are_mapped())
-+ return TEST_SKIP;
-+
-+ /* Check now capabilities, so we run the previous tests */
-+ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ if (!ret)
-+ return TEST_SKIP;
-+
-+ ret = kdbus_priv_activator(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(activator);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-benchmark.c b/tools/testing/selftests/kdbus/test-benchmark.c
-new file mode 100644
-index 0000000..8a9744b
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-benchmark.c
-@@ -0,0 +1,451 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <locale.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <stdbool.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <poll.h>
-+#include <sys/time.h>
-+#include <sys/mman.h>
-+#include <sys/socket.h>
-+#include <math.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+#define SERVICE_NAME "foo.bar.echo"
-+
-+/*
-+ * To have a banchmark comparison with unix socket, set:
-+ * user_memfd = false;
-+ * compare_uds = true;
-+ * attach_none = true; do not attached metadata
-+ */
-+
-+static bool use_memfd = true; /* transmit memfd? */
-+static bool compare_uds = false; /* unix-socket comparison? */
-+static bool attach_none = false; /* clear attach-flags? */
-+static char stress_payload[8192];
-+
-+struct stats {
-+ uint64_t count;
-+ uint64_t latency_acc;
-+ uint64_t latency_low;
-+ uint64_t latency_high;
-+ uint64_t latency_avg;
-+ uint64_t latency_ssquares;
-+};
-+
-+static struct stats stats;
-+
-+static void reset_stats(void)
-+{
-+ stats.count = 0;
-+ stats.latency_acc = 0;
-+ stats.latency_low = UINT64_MAX;
-+ stats.latency_high = 0;
-+ stats.latency_avg = 0;
-+ stats.latency_ssquares = 0;
-+}
-+
-+static void dump_stats(bool is_uds)
-+{
-+ if (stats.count > 0) {
-+ kdbus_printf("stats %s: %'llu packets processed, latency (nsecs) min/max/avg/dev %'7llu // %'7llu // %'7llu // %'7.f\n",
-+ is_uds ? " (UNIX)" : "(KDBUS)",
-+ (unsigned long long) stats.count,
-+ (unsigned long long) stats.latency_low,
-+ (unsigned long long) stats.latency_high,
-+ (unsigned long long) stats.latency_avg,
-+ sqrt(stats.latency_ssquares / stats.count));
-+ } else {
-+ kdbus_printf("*** no packets received. bus stuck?\n");
-+ }
-+}
-+
-+static void add_stats(uint64_t prev)
-+{
-+ uint64_t diff, latency_avg_prev;
-+
-+ diff = now(CLOCK_THREAD_CPUTIME_ID) - prev;
-+
-+ stats.count++;
-+ stats.latency_acc += diff;
-+
-+ /* see Welford62 */
-+ latency_avg_prev = stats.latency_avg;
-+ stats.latency_avg = stats.latency_acc / stats.count;
-+ stats.latency_ssquares += (diff - latency_avg_prev) * (diff - stats.latency_avg);
-+
-+ if (stats.latency_low > diff)
-+ stats.latency_low = diff;
-+
-+ if (stats.latency_high < diff)
-+ stats.latency_high = diff;
-+}
-+
-+static int setup_simple_kdbus_msg(struct kdbus_conn *conn,
-+ uint64_t dst_id,
-+ struct kdbus_msg **msg_out)
-+{
-+ struct kdbus_msg *msg;
-+ struct kdbus_item *item;
-+ uint64_t size;
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+
-+ msg = malloc(size);
-+ ASSERT_RETURN_VAL(msg, -ENOMEM);
-+
-+ memset(msg, 0, size);
-+ msg->size = size;
-+ msg->src_id = conn->id;
-+ msg->dst_id = dst_id;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+
-+ item = msg->items;
-+
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t) stress_payload;
-+ item->vec.size = sizeof(stress_payload);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ *msg_out = msg;
-+
-+ return 0;
-+}
-+
-+static int setup_memfd_kdbus_msg(struct kdbus_conn *conn,
-+ uint64_t dst_id,
-+ off_t *memfd_item_offset,
-+ struct kdbus_msg **msg_out)
-+{
-+ struct kdbus_msg *msg;
-+ struct kdbus_item *item;
-+ uint64_t size;
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
-+
-+ msg = malloc(size);
-+ ASSERT_RETURN_VAL(msg, -ENOMEM);
-+
-+ memset(msg, 0, size);
-+ msg->size = size;
-+ msg->src_id = conn->id;
-+ msg->dst_id = dst_id;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+
-+ item = msg->items;
-+
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t) stress_payload;
-+ item->vec.size = sizeof(stress_payload);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ item->type = KDBUS_ITEM_PAYLOAD_MEMFD;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_memfd);
-+ item->memfd.size = sizeof(uint64_t);
-+
-+ *memfd_item_offset = (unsigned char *)item - (unsigned char *)msg;
-+ *msg_out = msg;
-+
-+ return 0;
-+}
-+
-+static int
-+send_echo_request(struct kdbus_conn *conn, uint64_t dst_id,
-+ void *kdbus_msg, off_t memfd_item_offset)
-+{
-+ struct kdbus_cmd_send cmd = {};
-+ int memfd = -1;
-+ int ret;
-+
-+ if (use_memfd) {
-+ uint64_t now_ns = now(CLOCK_THREAD_CPUTIME_ID);
-+ struct kdbus_item *item = memfd_item_offset + kdbus_msg;
-+ memfd = sys_memfd_create("memfd-name", 0);
-+ ASSERT_RETURN_VAL(memfd >= 0, memfd);
-+
-+ ret = write(memfd, &now_ns, sizeof(now_ns));
-+ ASSERT_RETURN_VAL(ret == sizeof(now_ns), -EAGAIN);
-+
-+ ret = sys_memfd_seal_set(memfd);
-+ ASSERT_RETURN_VAL(ret == 0, -errno);
-+
-+ item->memfd.fd = memfd;
-+ }
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)kdbus_msg;
-+
-+ ret = kdbus_cmd_send(conn->fd, &cmd);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ close(memfd);
-+
-+ return 0;
-+}
-+
-+static int
-+handle_echo_reply(struct kdbus_conn *conn, uint64_t send_ns)
-+{
-+ int ret;
-+ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
-+ struct kdbus_msg *msg;
-+ const struct kdbus_item *item;
-+ bool has_memfd = false;
-+
-+ ret = kdbus_cmd_recv(conn->fd, &recv);
-+ if (ret == -EAGAIN)
-+ return ret;
-+
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ if (!use_memfd)
-+ goto out;
-+
-+ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
-+
-+ KDBUS_ITEM_FOREACH(item, msg, items) {
-+ switch (item->type) {
-+ case KDBUS_ITEM_PAYLOAD_MEMFD: {
-+ char *buf;
-+
-+ buf = mmap(NULL, item->memfd.size, PROT_READ,
-+ MAP_PRIVATE, item->memfd.fd, 0);
-+ ASSERT_RETURN_VAL(buf != MAP_FAILED, -EINVAL);
-+ ASSERT_RETURN_VAL(item->memfd.size == sizeof(uint64_t),
-+ -EINVAL);
-+
-+ add_stats(*(uint64_t*)buf);
-+ munmap(buf, item->memfd.size);
-+ close(item->memfd.fd);
-+ has_memfd = true;
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_PAYLOAD_OFF:
-+ /* ignore */
-+ break;
-+ }
-+ }
-+
-+out:
-+ if (!has_memfd)
-+ add_stats(send_ns);
-+
-+ ret = kdbus_free(conn, recv.msg.offset);
-+ ASSERT_RETURN_VAL(ret == 0, -errno);
-+
-+ return 0;
-+}
-+
-+static int benchmark(struct kdbus_test_env *env)
-+{
-+ static char buf[sizeof(stress_payload)];
-+ struct kdbus_msg *kdbus_msg = NULL;
-+ off_t memfd_cached_offset = 0;
-+ int ret;
-+ struct kdbus_conn *conn_a, *conn_b;
-+ struct pollfd fds[2];
-+ uint64_t start, send_ns, now_ns, diff;
-+ unsigned int i;
-+ int uds[2];
-+
-+ setlocale(LC_ALL, "");
-+
-+ for (i = 0; i < sizeof(stress_payload); i++)
-+ stress_payload[i] = i;
-+
-+ /* setup kdbus pair */
-+
-+ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_a && conn_b);
-+
-+ ret = kdbus_add_match_empty(conn_a);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_add_match_empty(conn_b);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_name_acquire(conn_a, SERVICE_NAME, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ if (attach_none) {
-+ ret = kdbus_conn_update_attach_flags(conn_a,
-+ _KDBUS_ATTACH_ALL,
-+ 0);
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ /* setup UDS pair */
-+
-+ ret = socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK, 0, uds);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* setup a kdbus msg now */
-+ if (use_memfd) {
-+ ret = setup_memfd_kdbus_msg(conn_b, conn_a->id,
-+ &memfd_cached_offset,
-+ &kdbus_msg);
-+ ASSERT_RETURN(ret == 0);
-+ } else {
-+ ret = setup_simple_kdbus_msg(conn_b, conn_a->id, &kdbus_msg);
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ /* start benchmark */
-+
-+ kdbus_printf("-- entering poll loop ...\n");
-+
-+ do {
-+ /* run kdbus benchmark */
-+ fds[0].fd = conn_a->fd;
-+ fds[1].fd = conn_b->fd;
-+
-+ /* cancel any pending message */
-+ handle_echo_reply(conn_a, 0);
-+
-+ start = now(CLOCK_THREAD_CPUTIME_ID);
-+ reset_stats();
-+
-+ send_ns = now(CLOCK_THREAD_CPUTIME_ID);
-+ ret = send_echo_request(conn_b, conn_a->id,
-+ kdbus_msg, memfd_cached_offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ while (1) {
-+ unsigned int nfds = sizeof(fds) / sizeof(fds[0]);
-+ unsigned int i;
-+
-+ for (i = 0; i < nfds; i++) {
-+ fds[i].events = POLLIN | POLLPRI | POLLHUP;
-+ fds[i].revents = 0;
-+ }
-+
-+ ret = poll(fds, nfds, 10);
-+ if (ret < 0)
-+ break;
-+
-+ if (fds[0].revents & POLLIN) {
-+ ret = handle_echo_reply(conn_a, send_ns);
-+ ASSERT_RETURN(ret == 0);
-+
-+ send_ns = now(CLOCK_THREAD_CPUTIME_ID);
-+ ret = send_echo_request(conn_b, conn_a->id,
-+ kdbus_msg,
-+ memfd_cached_offset);
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ now_ns = now(CLOCK_THREAD_CPUTIME_ID);
-+ diff = now_ns - start;
-+ if (diff > 1000000000ULL) {
-+ start = now_ns;
-+
-+ dump_stats(false);
-+ break;
-+ }
-+ }
-+
-+ if (!compare_uds)
-+ continue;
-+
-+ /* run unix-socket benchmark as comparison */
-+
-+ fds[0].fd = uds[0];
-+ fds[1].fd = uds[1];
-+
-+ /* cancel any pendign message */
-+ read(uds[1], buf, sizeof(buf));
-+
-+ start = now(CLOCK_THREAD_CPUTIME_ID);
-+ reset_stats();
-+
-+ send_ns = now(CLOCK_THREAD_CPUTIME_ID);
-+ ret = write(uds[0], stress_payload, sizeof(stress_payload));
-+ ASSERT_RETURN(ret == sizeof(stress_payload));
-+
-+ while (1) {
-+ unsigned int nfds = sizeof(fds) / sizeof(fds[0]);
-+ unsigned int i;
-+
-+ for (i = 0; i < nfds; i++) {
-+ fds[i].events = POLLIN | POLLPRI | POLLHUP;
-+ fds[i].revents = 0;
-+ }
-+
-+ ret = poll(fds, nfds, 10);
-+ if (ret < 0)
-+ break;
-+
-+ if (fds[1].revents & POLLIN) {
-+ ret = read(uds[1], buf, sizeof(buf));
-+ ASSERT_RETURN(ret == sizeof(buf));
-+
-+ add_stats(send_ns);
-+
-+ send_ns = now(CLOCK_THREAD_CPUTIME_ID);
-+ ret = write(uds[0], buf, sizeof(buf));
-+ ASSERT_RETURN(ret == sizeof(buf));
-+ }
-+
-+ now_ns = now(CLOCK_THREAD_CPUTIME_ID);
-+ diff = now_ns - start;
-+ if (diff > 1000000000ULL) {
-+ start = now_ns;
-+
-+ dump_stats(true);
-+ break;
-+ }
-+ }
-+
-+ } while (kdbus_util_verbose);
-+
-+ kdbus_printf("-- closing bus connections\n");
-+
-+ free(kdbus_msg);
-+
-+ kdbus_conn_free(conn_a);
-+ kdbus_conn_free(conn_b);
-+
-+ return (stats.count > 1) ? TEST_OK : TEST_ERR;
-+}
-+
-+int kdbus_test_benchmark(struct kdbus_test_env *env)
-+{
-+ use_memfd = true;
-+ attach_none = false;
-+ compare_uds = false;
-+ return benchmark(env);
-+}
-+
-+int kdbus_test_benchmark_nomemfds(struct kdbus_test_env *env)
-+{
-+ use_memfd = false;
-+ attach_none = false;
-+ compare_uds = false;
-+ return benchmark(env);
-+}
-+
-+int kdbus_test_benchmark_uds(struct kdbus_test_env *env)
-+{
-+ use_memfd = false;
-+ attach_none = true;
-+ compare_uds = true;
-+ return benchmark(env);
-+}
-diff --git a/tools/testing/selftests/kdbus/test-bus.c b/tools/testing/selftests/kdbus/test-bus.c
-new file mode 100644
-index 0000000..762fb30
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-bus.c
-@@ -0,0 +1,175 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <limits.h>
-+#include <sys/mman.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+static struct kdbus_item *kdbus_get_item(struct kdbus_info *info,
-+ uint64_t type)
-+{
-+ struct kdbus_item *item;
-+
-+ KDBUS_ITEM_FOREACH(item, info, items)
-+ if (item->type == type)
-+ return item;
-+
-+ return NULL;
-+}
-+
-+static int test_bus_creator_info(const char *bus_path)
-+{
-+ int ret;
-+ uint64_t offset;
-+ struct kdbus_conn *conn;
-+ struct kdbus_info *info;
-+ struct kdbus_item *item;
-+ char *tmp, *busname;
-+
-+ /* extract the bus-name from @bus_path */
-+ tmp = strdup(bus_path);
-+ ASSERT_RETURN(tmp);
-+ busname = strrchr(tmp, '/');
-+ ASSERT_RETURN(busname);
-+ *busname = 0;
-+ busname = strrchr(tmp, '/');
-+ ASSERT_RETURN(busname);
-+ ++busname;
-+
-+ conn = kdbus_hello(bus_path, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ ret = kdbus_bus_creator_info(conn, _KDBUS_ATTACH_ALL, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(conn->buf + offset);
-+
-+ item = kdbus_get_item(info, KDBUS_ITEM_MAKE_NAME);
-+ ASSERT_RETURN(item);
-+ ASSERT_RETURN(!strcmp(item->str, busname));
-+
-+ ret = kdbus_free(conn, offset);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ free(tmp);
-+ kdbus_conn_free(conn);
-+ return 0;
-+}
-+
-+int kdbus_test_bus_make(struct kdbus_test_env *env)
-+{
-+ struct {
-+ struct kdbus_cmd cmd;
-+
-+ /* bloom size item */
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_bloom_parameter bloom;
-+ } bs;
-+
-+ /* name item */
-+ uint64_t n_size;
-+ uint64_t n_type;
-+ char name[64];
-+ } bus_make;
-+ char s[PATH_MAX], *name;
-+ int ret, control_fd2;
-+ uid_t uid;
-+
-+ name = unique_name("");
-+ ASSERT_RETURN(name);
-+
-+ snprintf(s, sizeof(s), "%s/control", env->root);
-+ env->control_fd = open(s, O_RDWR|O_CLOEXEC);
-+ ASSERT_RETURN(env->control_fd >= 0);
-+
-+ control_fd2 = open(s, O_RDWR|O_CLOEXEC);
-+ ASSERT_RETURN(control_fd2 >= 0);
-+
-+ memset(&bus_make, 0, sizeof(bus_make));
-+
-+ bus_make.bs.size = sizeof(bus_make.bs);
-+ bus_make.bs.type = KDBUS_ITEM_BLOOM_PARAMETER;
-+ bus_make.bs.bloom.size = 64;
-+ bus_make.bs.bloom.n_hash = 1;
-+
-+ bus_make.n_type = KDBUS_ITEM_MAKE_NAME;
-+
-+ uid = getuid();
-+
-+ /* missing uid prefix */
-+ snprintf(bus_make.name, sizeof(bus_make.name), "foo");
-+ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
-+ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
-+ sizeof(bus_make.bs) + bus_make.n_size;
-+ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* non alphanumeric character */
-+ snprintf(bus_make.name, sizeof(bus_make.name), "%u-blah@123", uid);
-+ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
-+ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
-+ sizeof(bus_make.bs) + bus_make.n_size;
-+ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* '-' at the end */
-+ snprintf(bus_make.name, sizeof(bus_make.name), "%u-blah-", uid);
-+ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
-+ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
-+ sizeof(bus_make.bs) + bus_make.n_size;
-+ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* create a new bus */
-+ snprintf(bus_make.name, sizeof(bus_make.name), "%u-%s-1", uid, name);
-+ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
-+ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
-+ sizeof(bus_make.bs) + bus_make.n_size;
-+ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_cmd_bus_make(control_fd2, &bus_make.cmd);
-+ ASSERT_RETURN(ret == -EEXIST);
-+
-+ snprintf(s, sizeof(s), "%s/%u-%s-1/bus", env->root, uid, name);
-+ ASSERT_RETURN(access(s, F_OK) == 0);
-+
-+ ret = test_bus_creator_info(s);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* can't use the same fd for bus make twice, even though a different
-+ * bus name is used
-+ */
-+ snprintf(bus_make.name, sizeof(bus_make.name), "%u-%s-2", uid, name);
-+ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
-+ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
-+ sizeof(bus_make.bs) + bus_make.n_size;
-+ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
-+ ASSERT_RETURN(ret == -EBADFD);
-+
-+ /* create a new bus, with different fd and different bus name */
-+ snprintf(bus_make.name, sizeof(bus_make.name), "%u-%s-2", uid, name);
-+ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
-+ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
-+ sizeof(bus_make.bs) + bus_make.n_size;
-+ ret = kdbus_cmd_bus_make(control_fd2, &bus_make.cmd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ close(control_fd2);
-+ free(name);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-chat.c b/tools/testing/selftests/kdbus/test-chat.c
-new file mode 100644
-index 0000000..41e5b53
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-chat.c
-@@ -0,0 +1,124 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <poll.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+int kdbus_test_chat(struct kdbus_test_env *env)
-+{
-+ int ret, cookie;
-+ struct kdbus_conn *conn_a, *conn_b;
-+ struct pollfd fds[2];
-+ uint64_t flags;
-+ int count;
-+
-+ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_a && conn_b);
-+
-+ flags = KDBUS_NAME_ALLOW_REPLACEMENT;
-+ ret = kdbus_name_acquire(conn_a, "foo.bar.test", &flags);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_name_acquire(conn_a, "foo.bar.baz", NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ flags = KDBUS_NAME_QUEUE;
-+ ret = kdbus_name_acquire(conn_b, "foo.bar.baz", &flags);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_name_acquire(conn_a, "foo.bar.double", NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ flags = 0;
-+ ret = kdbus_name_acquire(conn_a, "foo.bar.double", &flags);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(!(flags & KDBUS_NAME_ACQUIRED));
-+
-+ ret = kdbus_name_release(conn_a, "foo.bar.double");
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_name_release(conn_a, "foo.bar.double");
-+ ASSERT_RETURN(ret == -ESRCH);
-+
-+ ret = kdbus_list(conn_b, KDBUS_LIST_UNIQUE |
-+ KDBUS_LIST_NAMES |
-+ KDBUS_LIST_QUEUED |
-+ KDBUS_LIST_ACTIVATORS);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_add_match_empty(conn_a);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_add_match_empty(conn_b);
-+ ASSERT_RETURN(ret == 0);
-+
-+ cookie = 0;
-+ ret = kdbus_msg_send(conn_b, NULL, 0xc0000000 | cookie, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ fds[0].fd = conn_a->fd;
-+ fds[1].fd = conn_b->fd;
-+
-+ kdbus_printf("-- entering poll loop ...\n");
-+
-+ for (count = 0;; count++) {
-+ int i, nfds = sizeof(fds) / sizeof(fds[0]);
-+
-+ for (i = 0; i < nfds; i++) {
-+ fds[i].events = POLLIN | POLLPRI | POLLHUP;
-+ fds[i].revents = 0;
-+ }
-+
-+ ret = poll(fds, nfds, 3000);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ if (fds[0].revents & POLLIN) {
-+ if (count > 2)
-+ kdbus_name_release(conn_a, "foo.bar.baz");
-+
-+ ret = kdbus_msg_recv(conn_a, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ret = kdbus_msg_send(conn_a, NULL,
-+ 0xc0000000 | cookie++,
-+ 0, 0, 0, conn_b->id);
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ if (fds[1].revents & POLLIN) {
-+ ret = kdbus_msg_recv(conn_b, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ret = kdbus_msg_send(conn_b, NULL,
-+ 0xc0000000 | cookie++,
-+ 0, 0, 0, conn_a->id);
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ ret = kdbus_list(conn_b, KDBUS_LIST_UNIQUE |
-+ KDBUS_LIST_NAMES |
-+ KDBUS_LIST_QUEUED |
-+ KDBUS_LIST_ACTIVATORS);
-+ ASSERT_RETURN(ret == 0);
-+
-+ if (count > 10)
-+ break;
-+ }
-+
-+ kdbus_printf("-- closing bus connections\n");
-+ kdbus_conn_free(conn_a);
-+ kdbus_conn_free(conn_b);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-connection.c b/tools/testing/selftests/kdbus/test-connection.c
-new file mode 100644
-index 0000000..4688ce8
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-connection.c
-@@ -0,0 +1,597 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <limits.h>
-+#include <sys/types.h>
-+#include <sys/capability.h>
-+#include <sys/mman.h>
-+#include <sys/syscall.h>
-+#include <sys/wait.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+int kdbus_test_hello(struct kdbus_test_env *env)
-+{
-+ struct kdbus_cmd_free cmd_free = {};
-+ struct kdbus_cmd_hello hello;
-+ int fd, ret;
-+
-+ memset(&hello, 0, sizeof(hello));
-+
-+ fd = open(env->buspath, O_RDWR|O_CLOEXEC);
-+ ASSERT_RETURN(fd >= 0);
-+
-+ hello.flags = KDBUS_HELLO_ACCEPT_FD;
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+ hello.attach_flags_recv = _KDBUS_ATTACH_ALL;
-+ hello.size = sizeof(struct kdbus_cmd_hello);
-+ hello.pool_size = POOL_SIZE;
-+
-+ /* an unaligned hello must result in -EFAULT */
-+ ret = kdbus_cmd_hello(fd, (struct kdbus_cmd_hello *) ((char *) &hello + 1));
-+ ASSERT_RETURN(ret == -EFAULT);
-+
-+ /* a size of 0 must return EMSGSIZE */
-+ hello.size = 1;
-+ hello.flags = KDBUS_HELLO_ACCEPT_FD;
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+ ret = kdbus_cmd_hello(fd, &hello);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ hello.size = sizeof(struct kdbus_cmd_hello);
-+
-+ /* check faulty flags */
-+ hello.flags = 1ULL << 32;
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+ ret = kdbus_cmd_hello(fd, &hello);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* check for faulty pool sizes */
-+ hello.pool_size = 0;
-+ hello.flags = KDBUS_HELLO_ACCEPT_FD;
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+ ret = kdbus_cmd_hello(fd, &hello);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ hello.pool_size = 4097;
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+ ret = kdbus_cmd_hello(fd, &hello);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ hello.pool_size = POOL_SIZE;
-+
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+ hello.offset = (__u64)-1;
-+
-+ /* success test */
-+ ret = kdbus_cmd_hello(fd, &hello);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* The kernel should have returned some items */
-+ ASSERT_RETURN(hello.offset != (__u64)-1);
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.offset = hello.offset;
-+ ret = kdbus_cmd_free(fd, &cmd_free);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ close(fd);
-+
-+ fd = open(env->buspath, O_RDWR|O_CLOEXEC);
-+ ASSERT_RETURN(fd >= 0);
-+
-+ /* no ACTIVATOR flag without a name */
-+ hello.flags = KDBUS_HELLO_ACTIVATOR;
-+ ret = kdbus_cmd_hello(fd, &hello);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ close(fd);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_byebye(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn;
-+ struct kdbus_cmd_recv cmd_recv = { .size = sizeof(cmd_recv) };
-+ struct kdbus_cmd cmd_byebye = { .size = sizeof(cmd_byebye) };
-+ int ret;
-+
-+ /* create a 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ ret = kdbus_add_match_empty(conn);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_add_match_empty(env->conn);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* send over 1st connection */
-+ ret = kdbus_msg_send(env->conn, NULL, 0, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* say byebye on the 2nd, which must fail */
-+ ret = kdbus_cmd_byebye(conn->fd, &cmd_byebye);
-+ ASSERT_RETURN(ret == -EBUSY);
-+
-+ /* receive the message */
-+ ret = kdbus_cmd_recv(conn->fd, &cmd_recv);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_free(conn, cmd_recv.msg.offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* and try again */
-+ ret = kdbus_cmd_byebye(conn->fd, &cmd_byebye);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* a 2nd try should result in -ECONNRESET */
-+ ret = kdbus_cmd_byebye(conn->fd, &cmd_byebye);
-+ ASSERT_RETURN(ret == -ECONNRESET);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-+
-+/* Get only the first item */
-+static struct kdbus_item *kdbus_get_item(struct kdbus_info *info,
-+ uint64_t type)
-+{
-+ struct kdbus_item *item;
-+
-+ KDBUS_ITEM_FOREACH(item, info, items)
-+ if (item->type == type)
-+ return item;
-+
-+ return NULL;
-+}
-+
-+static unsigned int kdbus_count_item(struct kdbus_info *info,
-+ uint64_t type)
-+{
-+ unsigned int i = 0;
-+ const struct kdbus_item *item;
-+
-+ KDBUS_ITEM_FOREACH(item, info, items)
-+ if (item->type == type)
-+ i++;
-+
-+ return i;
-+}
-+
-+static int kdbus_fuzz_conn_info(struct kdbus_test_env *env, int capable)
-+{
-+ int ret;
-+ unsigned int cnt = 0;
-+ uint64_t offset = 0;
-+ struct kdbus_info *info;
-+ struct kdbus_conn *conn;
-+ struct kdbus_conn *privileged;
-+ const struct kdbus_item *item;
-+ uint64_t valid_flags = KDBUS_ATTACH_NAMES |
-+ KDBUS_ATTACH_CREDS |
-+ KDBUS_ATTACH_PIDS |
-+ KDBUS_ATTACH_CONN_DESCRIPTION;
-+
-+ uint64_t invalid_flags = KDBUS_ATTACH_NAMES |
-+ KDBUS_ATTACH_CREDS |
-+ KDBUS_ATTACH_PIDS |
-+ KDBUS_ATTACH_CAPS |
-+ KDBUS_ATTACH_CGROUP |
-+ KDBUS_ATTACH_CONN_DESCRIPTION;
-+
-+ struct kdbus_creds cached_creds;
-+ uid_t ruid, euid, suid;
-+ gid_t rgid, egid, sgid;
-+
-+ getresuid(&ruid, &euid, &suid);
-+ getresgid(&rgid, &egid, &sgid);
-+
-+ cached_creds.uid = ruid;
-+ cached_creds.euid = euid;
-+ cached_creds.suid = suid;
-+ cached_creds.fsuid = ruid;
-+
-+ cached_creds.gid = rgid;
-+ cached_creds.egid = egid;
-+ cached_creds.sgid = sgid;
-+ cached_creds.fsgid = rgid;
-+
-+ struct kdbus_pids cached_pids = {
-+ .pid = getpid(),
-+ .tid = syscall(SYS_gettid),
-+ .ppid = getppid(),
-+ };
-+
-+ ret = kdbus_conn_info(env->conn, env->conn->id, NULL,
-+ valid_flags, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(env->conn->buf + offset);
-+ ASSERT_RETURN(info->id == env->conn->id);
-+
-+ /* We do not have any well-known name */
-+ item = kdbus_get_item(info, KDBUS_ITEM_NAME);
-+ ASSERT_RETURN(item == NULL);
-+
-+ item = kdbus_get_item(info, KDBUS_ITEM_CONN_DESCRIPTION);
-+ if (valid_flags & KDBUS_ATTACH_CONN_DESCRIPTION) {
-+ ASSERT_RETURN(item);
-+ } else {
-+ ASSERT_RETURN(item == NULL);
-+ }
-+
-+ kdbus_free(env->conn, offset);
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ privileged = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(privileged);
-+
-+ ret = kdbus_conn_info(conn, conn->id, NULL, valid_flags, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(conn->buf + offset);
-+ ASSERT_RETURN(info->id == conn->id);
-+
-+ /* We do not have any well-known name */
-+ item = kdbus_get_item(info, KDBUS_ITEM_NAME);
-+ ASSERT_RETURN(item == NULL);
-+
-+ cnt = kdbus_count_item(info, KDBUS_ITEM_CREDS);
-+ if (valid_flags & KDBUS_ATTACH_CREDS) {
-+ ASSERT_RETURN(cnt == 1);
-+
-+ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
-+ ASSERT_RETURN(item);
-+
-+ /* Compare received items with cached creds */
-+ ASSERT_RETURN(memcmp(&item->creds, &cached_creds,
-+ sizeof(struct kdbus_creds)) == 0);
-+ } else {
-+ ASSERT_RETURN(cnt == 0);
-+ }
-+
-+ item = kdbus_get_item(info, KDBUS_ITEM_PIDS);
-+ if (valid_flags & KDBUS_ATTACH_PIDS) {
-+ ASSERT_RETURN(item);
-+
-+ /* Compare item->pids with cached PIDs */
-+ ASSERT_RETURN(item->pids.pid == cached_pids.pid &&
-+ item->pids.tid == cached_pids.tid &&
-+ item->pids.ppid == cached_pids.ppid);
-+ } else {
-+ ASSERT_RETURN(item == NULL);
-+ }
-+
-+ /* We did not request KDBUS_ITEM_CAPS */
-+ item = kdbus_get_item(info, KDBUS_ITEM_CAPS);
-+ ASSERT_RETURN(item == NULL);
-+
-+ kdbus_free(conn, offset);
-+
-+ ret = kdbus_name_acquire(conn, "com.example.a", NULL);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_conn_info(conn, conn->id, NULL, valid_flags, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(conn->buf + offset);
-+ ASSERT_RETURN(info->id == conn->id);
-+
-+ item = kdbus_get_item(info, KDBUS_ITEM_OWNED_NAME);
-+ if (valid_flags & KDBUS_ATTACH_NAMES) {
-+ ASSERT_RETURN(item && !strcmp(item->name.name, "com.example.a"));
-+ } else {
-+ ASSERT_RETURN(item == NULL);
-+ }
-+
-+ kdbus_free(conn, offset);
-+
-+ ret = kdbus_conn_info(conn, 0, "com.example.a", valid_flags, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(conn->buf + offset);
-+ ASSERT_RETURN(info->id == conn->id);
-+
-+ kdbus_free(conn, offset);
-+
-+ /* does not have the necessary caps to drop to unprivileged */
-+ if (!capable)
-+ goto continue_test;
-+
-+ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({
-+ ret = kdbus_conn_info(conn, conn->id, NULL,
-+ valid_flags, &offset);
-+ ASSERT_EXIT(ret == 0);
-+
-+ info = (struct kdbus_info *)(conn->buf + offset);
-+ ASSERT_EXIT(info->id == conn->id);
-+
-+ if (valid_flags & KDBUS_ATTACH_NAMES) {
-+ item = kdbus_get_item(info, KDBUS_ITEM_OWNED_NAME);
-+ ASSERT_EXIT(item &&
-+ strcmp(item->name.name,
-+ "com.example.a") == 0);
-+ }
-+
-+ if (valid_flags & KDBUS_ATTACH_CREDS) {
-+ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
-+ ASSERT_EXIT(item);
-+
-+ /* Compare received items with cached creds */
-+ ASSERT_EXIT(memcmp(&item->creds, &cached_creds,
-+ sizeof(struct kdbus_creds)) == 0);
-+ }
-+
-+ if (valid_flags & KDBUS_ATTACH_PIDS) {
-+ item = kdbus_get_item(info, KDBUS_ITEM_PIDS);
-+ ASSERT_EXIT(item);
-+
-+ /*
-+ * Compare item->pids with cached pids of
-+ * privileged one.
-+ *
-+ * cmd_info will always return cached pids.
-+ */
-+ ASSERT_EXIT(item->pids.pid == cached_pids.pid &&
-+ item->pids.tid == cached_pids.tid);
-+ }
-+
-+ kdbus_free(conn, offset);
-+
-+ /*
-+ * Use invalid_flags and make sure that userspace
-+ * do not play with us.
-+ */
-+ ret = kdbus_conn_info(conn, conn->id, NULL,
-+ invalid_flags, &offset);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * Make sure that we return only one creds item and
-+ * it points to the cached creds.
-+ */
-+ cnt = kdbus_count_item(info, KDBUS_ITEM_CREDS);
-+ if (invalid_flags & KDBUS_ATTACH_CREDS) {
-+ ASSERT_EXIT(cnt == 1);
-+
-+ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
-+ ASSERT_EXIT(item);
-+
-+ /* Compare received items with cached creds */
-+ ASSERT_EXIT(memcmp(&item->creds, &cached_creds,
-+ sizeof(struct kdbus_creds)) == 0);
-+ } else {
-+ ASSERT_EXIT(cnt == 0);
-+ }
-+
-+ if (invalid_flags & KDBUS_ATTACH_PIDS) {
-+ cnt = kdbus_count_item(info, KDBUS_ITEM_PIDS);
-+ ASSERT_EXIT(cnt == 1);
-+
-+ item = kdbus_get_item(info, KDBUS_ITEM_PIDS);
-+ ASSERT_EXIT(item);
-+
-+ /* Compare item->pids with cached pids */
-+ ASSERT_EXIT(item->pids.pid == cached_pids.pid &&
-+ item->pids.tid == cached_pids.tid);
-+ }
-+
-+ cnt = kdbus_count_item(info, KDBUS_ITEM_CGROUP);
-+ if (invalid_flags & KDBUS_ATTACH_CGROUP) {
-+ ASSERT_EXIT(cnt == 1);
-+ } else {
-+ ASSERT_EXIT(cnt == 0);
-+ }
-+
-+ cnt = kdbus_count_item(info, KDBUS_ITEM_CAPS);
-+ if (invalid_flags & KDBUS_ATTACH_CAPS) {
-+ ASSERT_EXIT(cnt == 1);
-+ } else {
-+ ASSERT_EXIT(cnt == 0);
-+ }
-+
-+ kdbus_free(conn, offset);
-+ }),
-+ ({ 0; }));
-+ ASSERT_RETURN(ret == 0);
-+
-+continue_test:
-+
-+ /* A second name */
-+ ret = kdbus_name_acquire(conn, "com.example.b", NULL);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_conn_info(conn, conn->id, NULL, valid_flags, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(conn->buf + offset);
-+ ASSERT_RETURN(info->id == conn->id);
-+
-+ cnt = kdbus_count_item(info, KDBUS_ITEM_OWNED_NAME);
-+ if (valid_flags & KDBUS_ATTACH_NAMES) {
-+ ASSERT_RETURN(cnt == 2);
-+ } else {
-+ ASSERT_RETURN(cnt == 0);
-+ }
-+
-+ kdbus_free(conn, offset);
-+
-+ ASSERT_RETURN(ret == 0);
-+
-+ return 0;
-+}
-+
-+int kdbus_test_conn_info(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ int have_caps;
-+ struct {
-+ struct kdbus_cmd_info cmd_info;
-+
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ char str[64];
-+ } name;
-+ } buf;
-+
-+ buf.cmd_info.size = sizeof(struct kdbus_cmd_info);
-+ buf.cmd_info.flags = 0;
-+ buf.cmd_info.attach_flags = 0;
-+ buf.cmd_info.id = env->conn->id;
-+
-+ ret = kdbus_conn_info(env->conn, env->conn->id, NULL, 0, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* try to pass a name that is longer than the buffer's size */
-+ buf.name.size = KDBUS_ITEM_HEADER_SIZE + 1;
-+ buf.name.type = KDBUS_ITEM_NAME;
-+ strcpy(buf.name.str, "foo.bar.bla");
-+
-+ buf.cmd_info.id = 0;
-+ buf.cmd_info.size = sizeof(buf.cmd_info) + buf.name.size;
-+ ret = kdbus_cmd_conn_info(env->conn->fd, (struct kdbus_cmd_info *) &buf);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* Pass a non existent name */
-+ ret = kdbus_conn_info(env->conn, 0, "non.existent.name", 0, NULL);
-+ ASSERT_RETURN(ret == -ESRCH);
-+
-+ if (!all_uids_gids_are_mapped())
-+ return TEST_SKIP;
-+
-+ /* Test for caps here, so we run the previous test */
-+ have_caps = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
-+ ASSERT_RETURN(have_caps >= 0);
-+
-+ ret = kdbus_fuzz_conn_info(env, have_caps);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Now if we have skipped some tests then let the user know */
-+ if (!have_caps)
-+ return TEST_SKIP;
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_conn_update(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn;
-+ struct kdbus_msg *msg;
-+ int found = 0;
-+ int ret;
-+
-+ /*
-+ * kdbus_hello() sets all attach flags. Receive a message by this
-+ * connection, and make sure a timestamp item (just to pick one) is
-+ * present.
-+ */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ ret = kdbus_msg_send(env->conn, NULL, 0x12345678, 0, 0, 0, conn->id);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ found = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
-+ ASSERT_RETURN(found == 1);
-+
-+ kdbus_msg_free(msg);
-+
-+ /*
-+ * Now, modify the attach flags and repeat the action. The item must
-+ * now be missing.
-+ */
-+ found = 0;
-+
-+ ret = kdbus_conn_update_attach_flags(conn,
-+ _KDBUS_ATTACH_ALL,
-+ _KDBUS_ATTACH_ALL &
-+ ~KDBUS_ATTACH_TIMESTAMP);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_send(env->conn, NULL, 0x12345678, 0, 0, 0, conn->id);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ found = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
-+ ASSERT_RETURN(found == 0);
-+
-+ /* Provide a bogus attach_flags value */
-+ ret = kdbus_conn_update_attach_flags(conn,
-+ _KDBUS_ATTACH_ALL + 1,
-+ _KDBUS_ATTACH_ALL);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ kdbus_msg_free(msg);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_writable_pool(struct kdbus_test_env *env)
-+{
-+ struct kdbus_cmd_free cmd_free = {};
-+ struct kdbus_cmd_hello hello;
-+ int fd, ret;
-+ void *map;
-+
-+ fd = open(env->buspath, O_RDWR | O_CLOEXEC);
-+ ASSERT_RETURN(fd >= 0);
-+
-+ memset(&hello, 0, sizeof(hello));
-+ hello.flags = KDBUS_HELLO_ACCEPT_FD;
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+ hello.attach_flags_recv = _KDBUS_ATTACH_ALL;
-+ hello.size = sizeof(struct kdbus_cmd_hello);
-+ hello.pool_size = POOL_SIZE;
-+ hello.offset = (__u64)-1;
-+
-+ /* success test */
-+ ret = kdbus_cmd_hello(fd, &hello);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* The kernel should have returned some items */
-+ ASSERT_RETURN(hello.offset != (__u64)-1);
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.offset = hello.offset;
-+ ret = kdbus_cmd_free(fd, &cmd_free);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /* pools cannot be mapped writable */
-+ map = mmap(NULL, POOL_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-+ ASSERT_RETURN(map == MAP_FAILED);
-+
-+ /* pools can always be mapped readable */
-+ map = mmap(NULL, POOL_SIZE, PROT_READ, MAP_SHARED, fd, 0);
-+ ASSERT_RETURN(map != MAP_FAILED);
-+
-+ /* make sure we cannot change protection masks to writable */
-+ ret = mprotect(map, POOL_SIZE, PROT_READ | PROT_WRITE);
-+ ASSERT_RETURN(ret < 0);
-+
-+ munmap(map, POOL_SIZE);
-+ close(fd);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-daemon.c b/tools/testing/selftests/kdbus/test-daemon.c
-new file mode 100644
-index 0000000..8bc2386
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-daemon.c
-@@ -0,0 +1,65 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <poll.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+int kdbus_test_daemon(struct kdbus_test_env *env)
-+{
-+ struct pollfd fds[2];
-+ int count;
-+ int ret;
-+
-+ /* This test doesn't make any sense in non-interactive mode */
-+ if (!kdbus_util_verbose)
-+ return TEST_OK;
-+
-+ printf("Created connection %llu on bus '%s'\n",
-+ (unsigned long long) env->conn->id, env->buspath);
-+
-+ ret = kdbus_name_acquire(env->conn, "com.example.kdbus-test", NULL);
-+ ASSERT_RETURN(ret == 0);
-+ printf(" Aquired name: com.example.kdbus-test\n");
-+
-+ fds[0].fd = env->conn->fd;
-+ fds[1].fd = STDIN_FILENO;
-+
-+ printf("Monitoring connections:\n");
-+
-+ for (count = 0;; count++) {
-+ int i, nfds = sizeof(fds) / sizeof(fds[0]);
-+
-+ for (i = 0; i < nfds; i++) {
-+ fds[i].events = POLLIN | POLLPRI | POLLHUP;
-+ fds[i].revents = 0;
-+ }
-+
-+ ret = poll(fds, nfds, -1);
-+ if (ret <= 0)
-+ break;
-+
-+ if (fds[0].revents & POLLIN) {
-+ ret = kdbus_msg_recv(env->conn, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ /* stdin */
-+ if (fds[1].revents & POLLIN)
-+ break;
-+ }
-+
-+ printf("Closing bus connection\n");
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-endpoint.c b/tools/testing/selftests/kdbus/test-endpoint.c
-new file mode 100644
-index 0000000..34a7be4
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-endpoint.c
-@@ -0,0 +1,352 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <libgen.h>
-+#include <sys/capability.h>
-+#include <sys/wait.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+#define KDBUS_SYSNAME_MAX_LEN 63
-+
-+static int install_name_add_match(struct kdbus_conn *conn, const char *name)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_notify_name_change chg;
-+ } item;
-+ char name[64];
-+ } buf;
-+ int ret;
-+
-+ /* install the match rule */
-+ memset(&buf, 0, sizeof(buf));
-+ buf.item.type = KDBUS_ITEM_NAME_ADD;
-+ buf.item.chg.old_id.id = KDBUS_MATCH_ID_ANY;
-+ buf.item.chg.new_id.id = KDBUS_MATCH_ID_ANY;
-+ strncpy(buf.name, name, sizeof(buf.name) - 1);
-+ buf.item.size = sizeof(buf.item) + strlen(buf.name) + 1;
-+ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
-+
-+ ret = kdbus_cmd_match_add(conn->fd, &buf.cmd);
-+ if (ret < 0)
-+ return ret;
-+
-+ return 0;
-+}
-+
-+static int create_endpoint(const char *buspath, uid_t uid, const char *name,
-+ uint64_t flags)
-+{
-+ struct {
-+ struct kdbus_cmd cmd;
-+
-+ /* name item */
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ /* max should be KDBUS_SYSNAME_MAX_LEN */
-+ char str[128];
-+ } name;
-+ } ep_make;
-+ int fd, ret;
-+
-+ fd = open(buspath, O_RDWR);
-+ if (fd < 0)
-+ return fd;
-+
-+ memset(&ep_make, 0, sizeof(ep_make));
-+
-+ snprintf(ep_make.name.str,
-+ /* Use the KDBUS_SYSNAME_MAX_LEN or sizeof(str) */
-+ KDBUS_SYSNAME_MAX_LEN > strlen(name) ?
-+ KDBUS_SYSNAME_MAX_LEN : sizeof(ep_make.name.str),
-+ "%u-%s", uid, name);
-+
-+ ep_make.name.type = KDBUS_ITEM_MAKE_NAME;
-+ ep_make.name.size = KDBUS_ITEM_HEADER_SIZE +
-+ strlen(ep_make.name.str) + 1;
-+
-+ ep_make.cmd.flags = flags;
-+ ep_make.cmd.size = sizeof(ep_make.cmd) + ep_make.name.size;
-+
-+ ret = kdbus_cmd_endpoint_make(fd, &ep_make.cmd);
-+ if (ret < 0) {
-+ kdbus_printf("error creating endpoint: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ return fd;
-+}
-+
-+static int unpriv_test_custom_ep(const char *buspath)
-+{
-+ int ret, ep_fd1, ep_fd2;
-+ char *ep1, *ep2, *tmp1, *tmp2;
-+
-+ tmp1 = strdup(buspath);
-+ tmp2 = strdup(buspath);
-+ ASSERT_RETURN(tmp1 && tmp2);
-+
-+ ret = asprintf(&ep1, "%s/%u-%s", dirname(tmp1), getuid(), "apps1");
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = asprintf(&ep2, "%s/%u-%s", dirname(tmp2), getuid(), "apps2");
-+ ASSERT_RETURN(ret >= 0);
-+
-+ free(tmp1);
-+ free(tmp2);
-+
-+ /* endpoint only accessible to current uid */
-+ ep_fd1 = create_endpoint(buspath, getuid(), "apps1", 0);
-+ ASSERT_RETURN(ep_fd1 >= 0);
-+
-+ /* endpoint world accessible */
-+ ep_fd2 = create_endpoint(buspath, getuid(), "apps2",
-+ KDBUS_MAKE_ACCESS_WORLD);
-+ ASSERT_RETURN(ep_fd2 >= 0);
-+
-+ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_UID, ({
-+ int ep_fd;
-+ struct kdbus_conn *ep_conn;
-+
-+ /*
-+ * Make sure that we are not able to create custom
-+ * endpoints
-+ */
-+ ep_fd = create_endpoint(buspath, getuid(),
-+ "unpriv_costum_ep", 0);
-+ ASSERT_EXIT(ep_fd == -EPERM);
-+
-+ /*
-+ * Endpoint "apps1" only accessible to same users,
-+ * that own the endpoint. Access denied by VFS
-+ */
-+ ep_conn = kdbus_hello(ep1, 0, NULL, 0);
-+ ASSERT_EXIT(!ep_conn && errno == EACCES);
-+
-+ /* Endpoint "apps2" world accessible */
-+ ep_conn = kdbus_hello(ep2, 0, NULL, 0);
-+ ASSERT_EXIT(ep_conn);
-+
-+ kdbus_conn_free(ep_conn);
-+
-+ _exit(EXIT_SUCCESS);
-+ }),
-+ ({ 0; }));
-+ ASSERT_RETURN(ret == 0);
-+
-+ close(ep_fd1);
-+ close(ep_fd2);
-+ free(ep1);
-+ free(ep2);
-+
-+ return 0;
-+}
-+
-+static int update_endpoint(int fd, const char *name)
-+{
-+ int len = strlen(name) + 1;
-+ struct {
-+ struct kdbus_cmd cmd;
-+
-+ /* name item */
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ char str[KDBUS_ALIGN8(len)];
-+ } name;
-+
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_policy_access access;
-+ } access;
-+ } ep_update;
-+ int ret;
-+
-+ memset(&ep_update, 0, sizeof(ep_update));
-+
-+ ep_update.name.size = KDBUS_ITEM_HEADER_SIZE + len;
-+ ep_update.name.type = KDBUS_ITEM_NAME;
-+ strncpy(ep_update.name.str, name, sizeof(ep_update.name.str) - 1);
-+
-+ ep_update.access.size = sizeof(ep_update.access);
-+ ep_update.access.type = KDBUS_ITEM_POLICY_ACCESS;
-+ ep_update.access.access.type = KDBUS_POLICY_ACCESS_WORLD;
-+ ep_update.access.access.access = KDBUS_POLICY_SEE;
-+
-+ ep_update.cmd.size = sizeof(ep_update);
-+
-+ ret = kdbus_cmd_endpoint_update(fd, &ep_update.cmd);
-+ if (ret < 0) {
-+ kdbus_printf("error updating endpoint: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+int kdbus_test_custom_endpoint(struct kdbus_test_env *env)
-+{
-+ char *ep, *tmp;
-+ int ret, ep_fd;
-+ struct kdbus_msg *msg;
-+ struct kdbus_conn *ep_conn;
-+ struct kdbus_conn *reader;
-+ const char *name = "foo.bar.baz";
-+ const char *epname = "foo";
-+ char fake_ep[KDBUS_SYSNAME_MAX_LEN + 1] = {'\0'};
-+
-+ memset(fake_ep, 'X', sizeof(fake_ep) - 1);
-+
-+ /* Try to create a custom endpoint with a long name */
-+ ret = create_endpoint(env->buspath, getuid(), fake_ep, 0);
-+ ASSERT_RETURN(ret == -ENAMETOOLONG);
-+
-+ /* Try to create a custom endpoint with a different uid */
-+ ret = create_endpoint(env->buspath, getuid() + 1, "foobar", 0);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* create a custom endpoint, and open a connection on it */
-+ ep_fd = create_endpoint(env->buspath, getuid(), "foo", 0);
-+ ASSERT_RETURN(ep_fd >= 0);
-+
-+ tmp = strdup(env->buspath);
-+ ASSERT_RETURN(tmp);
-+
-+ ret = asprintf(&ep, "%s/%u-%s", dirname(tmp), getuid(), epname);
-+ free(tmp);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /* Register a connection that listen to broadcasts */
-+ reader = kdbus_hello(ep, 0, NULL, 0);
-+ ASSERT_RETURN(reader);
-+
-+ /* Register to kernel signals */
-+ ret = kdbus_add_match_id(reader, 0x1, KDBUS_ITEM_ID_ADD,
-+ KDBUS_MATCH_ID_ANY);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_add_match_id(reader, 0x2, KDBUS_ITEM_ID_REMOVE,
-+ KDBUS_MATCH_ID_ANY);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = install_name_add_match(reader, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Monitor connections are not supported on custom endpoints */
-+ ep_conn = kdbus_hello(ep, KDBUS_HELLO_MONITOR, NULL, 0);
-+ ASSERT_RETURN(!ep_conn && errno == EOPNOTSUPP);
-+
-+ ep_conn = kdbus_hello(ep, 0, NULL, 0);
-+ ASSERT_RETURN(ep_conn);
-+
-+ /* Check that the reader got the IdAdd notification */
-+ ret = kdbus_msg_recv(reader, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_ID_ADD);
-+ ASSERT_RETURN(msg->items[0].id_change.id == ep_conn->id);
-+ kdbus_msg_free(msg);
-+
-+ /*
-+ * Add a name add match on the endpoint connection, acquire name from
-+ * the unfiltered connection, and make sure the filtered connection
-+ * did not get the notification on the name owner change. Also, the
-+ * endpoint connection may not be able to call conn_info, neither on
-+ * the name nor on the ID.
-+ */
-+ ret = install_name_add_match(ep_conn, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_name_acquire(env->conn, name, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(ep_conn, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ ret = kdbus_conn_info(ep_conn, 0, name, 0, NULL);
-+ ASSERT_RETURN(ret == -ESRCH);
-+
-+ ret = kdbus_conn_info(ep_conn, 0, "random.crappy.name", 0, NULL);
-+ ASSERT_RETURN(ret == -ESRCH);
-+
-+ ret = kdbus_conn_info(ep_conn, env->conn->id, NULL, 0, NULL);
-+ ASSERT_RETURN(ret == -ENXIO);
-+
-+ ret = kdbus_conn_info(ep_conn, 0x0fffffffffffffffULL, NULL, 0, NULL);
-+ ASSERT_RETURN(ret == -ENXIO);
-+
-+ /* Check that the reader did not receive the name notification */
-+ ret = kdbus_msg_recv(reader, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ /*
-+ * Release the name again, update the custom endpoint policy,
-+ * and try again. This time, the connection on the custom endpoint
-+ * should have gotten it.
-+ */
-+ ret = kdbus_name_release(env->conn, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Check that the reader did not receive the name notification */
-+ ret = kdbus_msg_recv(reader, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ ret = update_endpoint(ep_fd, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_name_acquire(env->conn, name, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(ep_conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_NAME_ADD);
-+ ASSERT_RETURN(msg->items[0].name_change.old_id.id == 0);
-+ ASSERT_RETURN(msg->items[0].name_change.new_id.id == env->conn->id);
-+ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
-+ kdbus_msg_free(msg);
-+
-+ ret = kdbus_msg_recv(reader, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
-+
-+ kdbus_msg_free(msg);
-+
-+ ret = kdbus_conn_info(ep_conn, 0, name, 0, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_conn_info(ep_conn, env->conn->id, NULL, 0, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* If we have privileges test custom endpoints */
-+ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * All uids/gids are mapped and we have the necessary caps
-+ */
-+ if (ret && all_uids_gids_are_mapped()) {
-+ ret = unpriv_test_custom_ep(env->buspath);
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ kdbus_conn_free(reader);
-+ kdbus_conn_free(ep_conn);
-+ close(ep_fd);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-fd.c b/tools/testing/selftests/kdbus/test-fd.c
-new file mode 100644
-index 0000000..2ae0f5a
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-fd.c
-@@ -0,0 +1,789 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stdbool.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <sys/types.h>
-+#include <sys/mman.h>
-+#include <sys/socket.h>
-+#include <sys/wait.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+#define KDBUS_MSG_MAX_ITEMS 128
-+#define KDBUS_USER_MAX_CONN 256
-+
-+/* maximum number of inflight fds in a target queue per user */
-+#define KDBUS_CONN_MAX_FDS_PER_USER 16
-+
-+/* maximum number of memfd items per message */
-+#define KDBUS_MSG_MAX_MEMFD_ITEMS 16
-+
-+static int make_msg_payload_dbus(uint64_t src_id, uint64_t dst_id,
-+ uint64_t msg_size,
-+ struct kdbus_msg **msg_dbus)
-+{
-+ struct kdbus_msg *msg;
-+
-+ msg = malloc(msg_size);
-+ ASSERT_RETURN_VAL(msg, -ENOMEM);
-+
-+ memset(msg, 0, msg_size);
-+ msg->size = msg_size;
-+ msg->src_id = src_id;
-+ msg->dst_id = dst_id;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+
-+ *msg_dbus = msg;
-+
-+ return 0;
-+}
-+
-+static void make_item_memfds(struct kdbus_item *item,
-+ int *memfds, size_t memfd_size)
-+{
-+ size_t i;
-+
-+ for (i = 0; i < memfd_size; i++) {
-+ item->type = KDBUS_ITEM_PAYLOAD_MEMFD;
-+ item->size = KDBUS_ITEM_HEADER_SIZE +
-+ sizeof(struct kdbus_memfd);
-+ item->memfd.fd = memfds[i];
-+ item->memfd.size = sizeof(uint64_t); /* const size */
-+ item = KDBUS_ITEM_NEXT(item);
-+ }
-+}
-+
-+static void make_item_fds(struct kdbus_item *item,
-+ int *fd_array, size_t fd_size)
-+{
-+ size_t i;
-+ item->type = KDBUS_ITEM_FDS;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + (sizeof(int) * fd_size);
-+
-+ for (i = 0; i < fd_size; i++)
-+ item->fds[i] = fd_array[i];
-+}
-+
-+static int memfd_write(const char *name, void *buf, size_t bufsize)
-+{
-+ ssize_t ret;
-+ int memfd;
-+
-+ memfd = sys_memfd_create(name, 0);
-+ ASSERT_RETURN_VAL(memfd >= 0, memfd);
-+
-+ ret = write(memfd, buf, bufsize);
-+ ASSERT_RETURN_VAL(ret == (ssize_t)bufsize, -EAGAIN);
-+
-+ ret = sys_memfd_seal_set(memfd);
-+ ASSERT_RETURN_VAL(ret == 0, -errno);
-+
-+ return memfd;
-+}
-+
-+static int send_memfds(struct kdbus_conn *conn, uint64_t dst_id,
-+ int *memfds_array, size_t memfd_count)
-+{
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_item *item;
-+ struct kdbus_msg *msg;
-+ uint64_t size;
-+ int ret;
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += memfd_count * KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
-+
-+ if (dst_id == KDBUS_DST_ID_BROADCAST)
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
-+
-+ ret = make_msg_payload_dbus(conn->id, dst_id, size, &msg);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ item = msg->items;
-+
-+ if (dst_id == KDBUS_DST_ID_BROADCAST) {
-+ item->type = KDBUS_ITEM_BLOOM_FILTER;
-+ item->size = KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ msg->flags |= KDBUS_MSG_SIGNAL;
-+ }
-+
-+ make_item_memfds(item, memfds_array, memfd_count);
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ ret = kdbus_cmd_send(conn->fd, &cmd);
-+ if (ret < 0) {
-+ kdbus_printf("error sending message: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ free(msg);
-+ return 0;
-+}
-+
-+static int send_fds(struct kdbus_conn *conn, uint64_t dst_id,
-+ int *fd_array, size_t fd_count)
-+{
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_item *item;
-+ struct kdbus_msg *msg;
-+ uint64_t size;
-+ int ret;
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += KDBUS_ITEM_SIZE(sizeof(int) * fd_count);
-+
-+ if (dst_id == KDBUS_DST_ID_BROADCAST)
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
-+
-+ ret = make_msg_payload_dbus(conn->id, dst_id, size, &msg);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ item = msg->items;
-+
-+ if (dst_id == KDBUS_DST_ID_BROADCAST) {
-+ item->type = KDBUS_ITEM_BLOOM_FILTER;
-+ item->size = KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ msg->flags |= KDBUS_MSG_SIGNAL;
-+ }
-+
-+ make_item_fds(item, fd_array, fd_count);
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ ret = kdbus_cmd_send(conn->fd, &cmd);
-+ if (ret < 0) {
-+ kdbus_printf("error sending message: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ free(msg);
-+ return ret;
-+}
-+
-+static int send_fds_memfds(struct kdbus_conn *conn, uint64_t dst_id,
-+ int *fds_array, size_t fd_count,
-+ int *memfds_array, size_t memfd_count)
-+{
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_item *item;
-+ struct kdbus_msg *msg;
-+ uint64_t size;
-+ int ret;
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += memfd_count * KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
-+ size += KDBUS_ITEM_SIZE(sizeof(int) * fd_count);
-+
-+ ret = make_msg_payload_dbus(conn->id, dst_id, size, &msg);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ item = msg->items;
-+
-+ make_item_fds(item, fds_array, fd_count);
-+ item = KDBUS_ITEM_NEXT(item);
-+ make_item_memfds(item, memfds_array, memfd_count);
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ ret = kdbus_cmd_send(conn->fd, &cmd);
-+ if (ret < 0) {
-+ kdbus_printf("error sending message: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ free(msg);
-+ return ret;
-+}
-+
-+/* Return the number of received fds */
-+static unsigned int kdbus_item_get_nfds(struct kdbus_msg *msg)
-+{
-+ unsigned int fds = 0;
-+ const struct kdbus_item *item;
-+
-+ KDBUS_ITEM_FOREACH(item, msg, items) {
-+ switch (item->type) {
-+ case KDBUS_ITEM_FDS: {
-+ fds += (item->size - KDBUS_ITEM_HEADER_SIZE) /
-+ sizeof(int);
-+ break;
-+ }
-+
-+ case KDBUS_ITEM_PAYLOAD_MEMFD:
-+ fds++;
-+ break;
-+
-+ default:
-+ break;
-+ }
-+ }
-+
-+ return fds;
-+}
-+
-+static struct kdbus_msg *
-+get_kdbus_msg_with_fd(struct kdbus_conn *conn_src,
-+ uint64_t dst_id, uint64_t cookie, int fd)
-+{
-+ int ret;
-+ uint64_t size;
-+ struct kdbus_item *item;
-+ struct kdbus_msg *msg;
-+
-+ size = sizeof(struct kdbus_msg);
-+ if (fd >= 0)
-+ size += KDBUS_ITEM_SIZE(sizeof(int));
-+
-+ ret = make_msg_payload_dbus(conn_src->id, dst_id, size, &msg);
-+ ASSERT_RETURN_VAL(ret == 0, NULL);
-+
-+ msg->cookie = cookie;
-+
-+ if (fd >= 0) {
-+ item = msg->items;
-+
-+ make_item_fds(item, (int *)&fd, 1);
-+ }
-+
-+ return msg;
-+}
-+
-+static int kdbus_test_no_fds(struct kdbus_test_env *env,
-+ int *fds, int *memfd)
-+{
-+ pid_t pid;
-+ int ret, status;
-+ uint64_t cookie;
-+ int connfd1, connfd2;
-+ struct kdbus_msg *msg, *msg_sync_reply;
-+ struct kdbus_cmd_hello hello;
-+ struct kdbus_conn *conn_src, *conn_dst, *conn_dummy;
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_cmd_free cmd_free = {};
-+
-+ conn_src = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_src);
-+
-+ connfd1 = open(env->buspath, O_RDWR|O_CLOEXEC);
-+ ASSERT_RETURN(connfd1 >= 0);
-+
-+ connfd2 = open(env->buspath, O_RDWR|O_CLOEXEC);
-+ ASSERT_RETURN(connfd2 >= 0);
-+
-+ /*
-+ * Create connections without KDBUS_HELLO_ACCEPT_FD
-+ * to test if send fd operations are blocked
-+ */
-+ conn_dst = malloc(sizeof(*conn_dst));
-+ ASSERT_RETURN(conn_dst);
-+
-+ conn_dummy = malloc(sizeof(*conn_dummy));
-+ ASSERT_RETURN(conn_dummy);
-+
-+ memset(&hello, 0, sizeof(hello));
-+ hello.size = sizeof(struct kdbus_cmd_hello);
-+ hello.pool_size = POOL_SIZE;
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+
-+ ret = kdbus_cmd_hello(connfd1, &hello);
-+ ASSERT_RETURN(ret == 0);
-+
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.offset = hello.offset;
-+ ret = kdbus_cmd_free(connfd1, &cmd_free);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ conn_dst->fd = connfd1;
-+ conn_dst->id = hello.id;
-+
-+ memset(&hello, 0, sizeof(hello));
-+ hello.size = sizeof(struct kdbus_cmd_hello);
-+ hello.pool_size = POOL_SIZE;
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
-+
-+ ret = kdbus_cmd_hello(connfd2, &hello);
-+ ASSERT_RETURN(ret == 0);
-+
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.offset = hello.offset;
-+ ret = kdbus_cmd_free(connfd2, &cmd_free);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ conn_dummy->fd = connfd2;
-+ conn_dummy->id = hello.id;
-+
-+ conn_dst->buf = mmap(NULL, POOL_SIZE, PROT_READ,
-+ MAP_SHARED, connfd1, 0);
-+ ASSERT_RETURN(conn_dst->buf != MAP_FAILED);
-+
-+ conn_dummy->buf = mmap(NULL, POOL_SIZE, PROT_READ,
-+ MAP_SHARED, connfd2, 0);
-+ ASSERT_RETURN(conn_dummy->buf != MAP_FAILED);
-+
-+ /*
-+ * Send fds to connection that do not accept fd passing
-+ */
-+ ret = send_fds(conn_src, conn_dst->id, fds, 1);
-+ ASSERT_RETURN(ret == -ECOMM);
-+
-+ /*
-+ * memfd are kdbus payload
-+ */
-+ ret = send_memfds(conn_src, conn_dst->id, memfd, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv_poll(conn_dst, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ cookie = time(NULL);
-+
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, pid);
-+
-+ if (pid == 0) {
-+ struct timespec now;
-+
-+ /*
-+ * A sync send/reply to a connection that do not
-+ * accept fds should fail if it contains an fd
-+ */
-+ msg_sync_reply = get_kdbus_msg_with_fd(conn_dst,
-+ conn_dummy->id,
-+ cookie, fds[0]);
-+ ASSERT_EXIT(msg_sync_reply);
-+
-+ ret = clock_gettime(CLOCK_MONOTONIC_COARSE, &now);
-+ ASSERT_EXIT(ret == 0);
-+
-+ msg_sync_reply->timeout_ns = now.tv_sec * 1000000000ULL +
-+ now.tv_nsec + 100000000ULL;
-+ msg_sync_reply->flags = KDBUS_MSG_EXPECT_REPLY;
-+
-+ memset(&cmd, 0, sizeof(cmd));
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg_sync_reply;
-+ cmd.flags = KDBUS_SEND_SYNC_REPLY;
-+
-+ ret = kdbus_cmd_send(conn_dst->fd, &cmd);
-+ ASSERT_EXIT(ret == -ECOMM);
-+
-+ /*
-+ * Now send a normal message, but the sync reply
-+ * will fail since it contains an fd that the
-+ * original sender do not want.
-+ *
-+ * The original sender will fail with -ETIMEDOUT
-+ */
-+ cookie++;
-+ ret = kdbus_msg_send_sync(conn_dst, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 5000000000ULL, 0, conn_src->id, -1);
-+ ASSERT_EXIT(ret == -EREMOTEIO);
-+
-+ cookie++;
-+ ret = kdbus_msg_recv_poll(conn_dst, 100, &msg, NULL);
-+ ASSERT_EXIT(ret == 0);
-+ ASSERT_EXIT(msg->cookie == cookie);
-+
-+ free(msg_sync_reply);
-+ kdbus_msg_free(msg);
-+
-+ _exit(EXIT_SUCCESS);
-+ }
-+
-+ ret = kdbus_msg_recv_poll(conn_dummy, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == -ETIMEDOUT);
-+
-+ cookie++;
-+ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
-+ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ /*
-+ * Try to reply with a kdbus connection handle, this should
-+ * fail with -EOPNOTSUPP
-+ */
-+ msg_sync_reply = get_kdbus_msg_with_fd(conn_src,
-+ conn_dst->id,
-+ cookie, conn_dst->fd);
-+ ASSERT_RETURN(msg_sync_reply);
-+
-+ msg_sync_reply->cookie_reply = cookie;
-+
-+ memset(&cmd, 0, sizeof(cmd));
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg_sync_reply;
-+
-+ ret = kdbus_cmd_send(conn_src->fd, &cmd);
-+ ASSERT_RETURN(ret == -EOPNOTSUPP);
-+
-+ free(msg_sync_reply);
-+
-+ /*
-+ * Try to reply with a normal fd, this should fail even
-+ * if the response is a sync reply
-+ *
-+ * From the sender view we fail with -ECOMM
-+ */
-+ msg_sync_reply = get_kdbus_msg_with_fd(conn_src,
-+ conn_dst->id,
-+ cookie, fds[0]);
-+ ASSERT_RETURN(msg_sync_reply);
-+
-+ msg_sync_reply->cookie_reply = cookie;
-+
-+ memset(&cmd, 0, sizeof(cmd));
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg_sync_reply;
-+
-+ ret = kdbus_cmd_send(conn_src->fd, &cmd);
-+ ASSERT_RETURN(ret == -ECOMM);
-+
-+ free(msg_sync_reply);
-+
-+ /*
-+ * Resend another normal message and check if the queue
-+ * is clear
-+ */
-+ cookie++;
-+ ret = kdbus_msg_send(conn_src, NULL, cookie, 0, 0, 0,
-+ conn_dst->id);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ kdbus_conn_free(conn_dummy);
-+ kdbus_conn_free(conn_dst);
-+ kdbus_conn_free(conn_src);
-+
-+ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
-+}
-+
-+static int kdbus_send_multiple_fds(struct kdbus_conn *conn_src,
-+ struct kdbus_conn *conn_dst)
-+{
-+ int ret, i;
-+ unsigned int nfds;
-+ int fds[KDBUS_CONN_MAX_FDS_PER_USER + 1];
-+ int memfds[KDBUS_MSG_MAX_ITEMS + 1];
-+ struct kdbus_msg *msg;
-+ uint64_t dummy_value;
-+
-+ dummy_value = time(NULL);
-+
-+ for (i = 0; i < KDBUS_CONN_MAX_FDS_PER_USER + 1; i++) {
-+ fds[i] = open("/dev/null", O_RDWR|O_CLOEXEC);
-+ ASSERT_RETURN_VAL(fds[i] >= 0, -errno);
-+ }
-+
-+ /* Send KDBUS_CONN_MAX_FDS_PER_USER with one more fd */
-+ ret = send_fds(conn_src, conn_dst->id, fds,
-+ KDBUS_CONN_MAX_FDS_PER_USER + 1);
-+ ASSERT_RETURN(ret == -EMFILE);
-+
-+ /* Retry with the correct KDBUS_CONN_MAX_FDS_PER_USER */
-+ ret = send_fds(conn_src, conn_dst->id, fds,
-+ KDBUS_CONN_MAX_FDS_PER_USER);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Check we got the right number of fds */
-+ nfds = kdbus_item_get_nfds(msg);
-+ ASSERT_RETURN(nfds == KDBUS_CONN_MAX_FDS_PER_USER);
-+
-+ kdbus_msg_free(msg);
-+
-+ for (i = 0; i < KDBUS_MSG_MAX_ITEMS + 1; i++, dummy_value++) {
-+ memfds[i] = memfd_write("memfd-name",
-+ &dummy_value,
-+ sizeof(dummy_value));
-+ ASSERT_RETURN_VAL(memfds[i] >= 0, memfds[i]);
-+ }
-+
-+ /* Send KDBUS_MSG_MAX_ITEMS with one more memfd */
-+ ret = send_memfds(conn_src, conn_dst->id,
-+ memfds, KDBUS_MSG_MAX_ITEMS + 1);
-+ ASSERT_RETURN(ret == -E2BIG);
-+
-+ ret = send_memfds(conn_src, conn_dst->id,
-+ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS + 1);
-+ ASSERT_RETURN(ret == -E2BIG);
-+
-+ /* Retry with the correct KDBUS_MSG_MAX_ITEMS */
-+ ret = send_memfds(conn_src, conn_dst->id,
-+ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Check we got the right number of fds */
-+ nfds = kdbus_item_get_nfds(msg);
-+ ASSERT_RETURN(nfds == KDBUS_MSG_MAX_MEMFD_ITEMS);
-+
-+ kdbus_msg_free(msg);
-+
-+
-+ /*
-+ * Combine multiple KDBUS_CONN_MAX_FDS_PER_USER+1 fds and
-+ * 10 memfds
-+ */
-+ ret = send_fds_memfds(conn_src, conn_dst->id,
-+ fds, KDBUS_CONN_MAX_FDS_PER_USER + 1,
-+ memfds, 10);
-+ ASSERT_RETURN(ret == -EMFILE);
-+
-+ ret = kdbus_msg_recv(conn_dst, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ /*
-+ * Combine multiple KDBUS_CONN_MAX_FDS_PER_USER fds and
-+ * (128 - 1) + 1 memfds, all fds take one item, while each
-+ * memfd takes one item
-+ */
-+ ret = send_fds_memfds(conn_src, conn_dst->id,
-+ fds, KDBUS_CONN_MAX_FDS_PER_USER,
-+ memfds, (KDBUS_MSG_MAX_ITEMS - 1) + 1);
-+ ASSERT_RETURN(ret == -E2BIG);
-+
-+ ret = send_fds_memfds(conn_src, conn_dst->id,
-+ fds, KDBUS_CONN_MAX_FDS_PER_USER,
-+ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS + 1);
-+ ASSERT_RETURN(ret == -E2BIG);
-+
-+ ret = kdbus_msg_recv(conn_dst, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ /*
-+ * Send KDBUS_CONN_MAX_FDS_PER_USER fds +
-+ * KDBUS_MSG_MAX_MEMFD_ITEMS memfds
-+ */
-+ ret = send_fds_memfds(conn_src, conn_dst->id,
-+ fds, KDBUS_CONN_MAX_FDS_PER_USER,
-+ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Check we got the right number of fds */
-+ nfds = kdbus_item_get_nfds(msg);
-+ ASSERT_RETURN(nfds == KDBUS_CONN_MAX_FDS_PER_USER +
-+ KDBUS_MSG_MAX_MEMFD_ITEMS);
-+
-+ kdbus_msg_free(msg);
-+
-+
-+ /*
-+ * Re-send fds + memfds, close them, but do not receive them
-+ * and try to queue more
-+ */
-+ ret = send_fds_memfds(conn_src, conn_dst->id,
-+ fds, KDBUS_CONN_MAX_FDS_PER_USER,
-+ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* close old references and get a new ones */
-+ for (i = 0; i < KDBUS_CONN_MAX_FDS_PER_USER + 1; i++) {
-+ close(fds[i]);
-+ fds[i] = open("/dev/null", O_RDWR|O_CLOEXEC);
-+ ASSERT_RETURN_VAL(fds[i] >= 0, -errno);
-+ }
-+
-+ /* should fail since we have already fds in the queue */
-+ ret = send_fds(conn_src, conn_dst->id, fds,
-+ KDBUS_CONN_MAX_FDS_PER_USER);
-+ ASSERT_RETURN(ret == -EMFILE);
-+
-+ /* This should succeed */
-+ ret = send_memfds(conn_src, conn_dst->id,
-+ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ nfds = kdbus_item_get_nfds(msg);
-+ ASSERT_RETURN(nfds == KDBUS_CONN_MAX_FDS_PER_USER +
-+ KDBUS_MSG_MAX_MEMFD_ITEMS);
-+
-+ kdbus_msg_free(msg);
-+
-+ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ nfds = kdbus_item_get_nfds(msg);
-+ ASSERT_RETURN(nfds == KDBUS_MSG_MAX_MEMFD_ITEMS);
-+
-+ kdbus_msg_free(msg);
-+
-+ ret = kdbus_msg_recv(conn_dst, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ for (i = 0; i < KDBUS_CONN_MAX_FDS_PER_USER + 1; i++)
-+ close(fds[i]);
-+
-+ for (i = 0; i < KDBUS_MSG_MAX_ITEMS + 1; i++)
-+ close(memfds[i]);
-+
-+ return 0;
-+}
-+
-+int kdbus_test_fd_passing(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn_src, *conn_dst;
-+ const char *str = "stackenblocken";
-+ const struct kdbus_item *item;
-+ struct kdbus_msg *msg;
-+ unsigned int i;
-+ uint64_t now;
-+ int fds_conn[2];
-+ int sock_pair[2];
-+ int fds[2];
-+ int memfd;
-+ int ret;
-+
-+ now = (uint64_t) time(NULL);
-+
-+ /* create two connections */
-+ conn_src = kdbus_hello(env->buspath, 0, NULL, 0);
-+ conn_dst = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_src && conn_dst);
-+
-+ fds_conn[0] = conn_src->fd;
-+ fds_conn[1] = conn_dst->fd;
-+
-+ ret = socketpair(AF_UNIX, SOCK_STREAM, 0, sock_pair);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Setup memfd */
-+ memfd = memfd_write("memfd-name", &now, sizeof(now));
-+ ASSERT_RETURN(memfd >= 0);
-+
-+ /* Setup pipes */
-+ ret = pipe(fds);
-+ ASSERT_RETURN(ret == 0);
-+
-+ i = write(fds[1], str, strlen(str));
-+ ASSERT_RETURN(i == strlen(str));
-+
-+ /*
-+ * Try to ass the handle of a connection as message payload.
-+ * This must fail.
-+ */
-+ ret = send_fds(conn_src, conn_dst->id, fds_conn, 2);
-+ ASSERT_RETURN(ret == -ENOTSUP);
-+
-+ ret = send_fds(conn_dst, conn_src->id, fds_conn, 2);
-+ ASSERT_RETURN(ret == -ENOTSUP);
-+
-+ ret = send_fds(conn_src, conn_dst->id, sock_pair, 2);
-+ ASSERT_RETURN(ret == -ENOTSUP);
-+
-+ /*
-+ * Send fds and memfds to connection that do not accept fds
-+ */
-+ ret = kdbus_test_no_fds(env, fds, (int *)&memfd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Try to broadcast file descriptors. This must fail. */
-+ ret = send_fds(conn_src, KDBUS_DST_ID_BROADCAST, fds, 1);
-+ ASSERT_RETURN(ret == -ENOTUNIQ);
-+
-+ /* Try to broadcast memfd. This must succeed. */
-+ ret = send_memfds(conn_src, KDBUS_DST_ID_BROADCAST, (int *)&memfd, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Open code this loop */
-+loop_send_fds:
-+
-+ /*
-+ * Send the read end of the pipe and close it.
-+ */
-+ ret = send_fds(conn_src, conn_dst->id, fds, 1);
-+ ASSERT_RETURN(ret == 0);
-+ close(fds[0]);
-+
-+ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ KDBUS_ITEM_FOREACH(item, msg, items) {
-+ if (item->type == KDBUS_ITEM_FDS) {
-+ char tmp[14];
-+ int nfds = (item->size - KDBUS_ITEM_HEADER_SIZE) /
-+ sizeof(int);
-+ ASSERT_RETURN(nfds == 1);
-+
-+ i = read(item->fds[0], tmp, sizeof(tmp));
-+ if (i != 0) {
-+ ASSERT_RETURN(i == sizeof(tmp));
-+ ASSERT_RETURN(memcmp(tmp, str, sizeof(tmp)) == 0);
-+
-+ /* Write EOF */
-+ close(fds[1]);
-+
-+ /*
-+ * Resend the read end of the pipe,
-+ * the receiver still holds a reference
-+ * to it...
-+ */
-+ goto loop_send_fds;
-+ }
-+
-+ /* Got EOF */
-+
-+ /*
-+ * Close the last reference to the read end
-+ * of the pipe, other references are
-+ * automatically closed just after send.
-+ */
-+ close(item->fds[0]);
-+ }
-+ }
-+
-+ /*
-+ * Try to resend the read end of the pipe. Must fail with
-+ * -EBADF since both the sender and receiver closed their
-+ * references to it. We assume the above since sender and
-+ * receiver are on the same process.
-+ */
-+ ret = send_fds(conn_src, conn_dst->id, fds, 1);
-+ ASSERT_RETURN(ret == -EBADF);
-+
-+ /* Then we clear out received any data... */
-+ kdbus_msg_free(msg);
-+
-+ ret = kdbus_send_multiple_fds(conn_src, conn_dst);
-+ ASSERT_RETURN(ret == 0);
-+
-+ close(sock_pair[0]);
-+ close(sock_pair[1]);
-+ close(memfd);
-+
-+ kdbus_conn_free(conn_src);
-+ kdbus_conn_free(conn_dst);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-free.c b/tools/testing/selftests/kdbus/test-free.c
-new file mode 100644
-index 0000000..f666da3
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-free.c
-@@ -0,0 +1,64 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+static int sample_ioctl_call(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ struct kdbus_cmd_list cmd_list = {
-+ .flags = KDBUS_LIST_QUEUED,
-+ .size = sizeof(cmd_list),
-+ };
-+
-+ ret = kdbus_cmd_list(env->conn->fd, &cmd_list);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* DON'T FREE THIS SLICE OF MEMORY! */
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_free(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ struct kdbus_cmd_free cmd_free = {};
-+
-+ /* free an unallocated buffer */
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.flags = 0;
-+ cmd_free.offset = 0;
-+ ret = kdbus_cmd_free(env->conn->fd, &cmd_free);
-+ ASSERT_RETURN(ret == -ENXIO);
-+
-+ /* free a buffer out of the pool's bounds */
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.offset = POOL_SIZE + 1;
-+ ret = kdbus_cmd_free(env->conn->fd, &cmd_free);
-+ ASSERT_RETURN(ret == -ENXIO);
-+
-+ /*
-+ * The user application is responsible for freeing the allocated
-+ * memory with the KDBUS_CMD_FREE ioctl, so let's test what happens
-+ * if we forget about it.
-+ */
-+
-+ ret = sample_ioctl_call(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = sample_ioctl_call(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-match.c b/tools/testing/selftests/kdbus/test-match.c
-new file mode 100644
-index 0000000..2360dc1
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-match.c
-@@ -0,0 +1,441 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+int kdbus_test_match_id_add(struct kdbus_test_env *env)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_notify_id_change chg;
-+ } item;
-+ } buf;
-+ struct kdbus_conn *conn;
-+ struct kdbus_msg *msg;
-+ int ret;
-+
-+ memset(&buf, 0, sizeof(buf));
-+
-+ buf.cmd.size = sizeof(buf);
-+ buf.cmd.cookie = 0xdeafbeefdeaddead;
-+ buf.item.size = sizeof(buf.item);
-+ buf.item.type = KDBUS_ITEM_ID_ADD;
-+ buf.item.chg.id = KDBUS_MATCH_ID_ANY;
-+
-+ /* match on id add */
-+ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* create 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ /* 1st connection should have received a notification */
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_ID_ADD);
-+ ASSERT_RETURN(msg->items[0].id_change.id == conn->id);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_match_id_remove(struct kdbus_test_env *env)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_notify_id_change chg;
-+ } item;
-+ } buf;
-+ struct kdbus_conn *conn;
-+ struct kdbus_msg *msg;
-+ size_t id;
-+ int ret;
-+
-+ /* create 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+ id = conn->id;
-+
-+ memset(&buf, 0, sizeof(buf));
-+ buf.cmd.size = sizeof(buf);
-+ buf.cmd.cookie = 0xdeafbeefdeaddead;
-+ buf.item.size = sizeof(buf.item);
-+ buf.item.type = KDBUS_ITEM_ID_REMOVE;
-+ buf.item.chg.id = id;
-+
-+ /* register match on 2nd connection */
-+ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* remove 2nd connection again */
-+ kdbus_conn_free(conn);
-+
-+ /* 1st connection should have received a notification */
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_ID_REMOVE);
-+ ASSERT_RETURN(msg->items[0].id_change.id == id);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_match_replace(struct kdbus_test_env *env)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_notify_id_change chg;
-+ } item;
-+ } buf;
-+ struct kdbus_conn *conn;
-+ struct kdbus_msg *msg;
-+ size_t id;
-+ int ret;
-+
-+ /* add a match to id_add */
-+ ASSERT_RETURN(kdbus_test_match_id_add(env) == TEST_OK);
-+
-+ /* do a replace of the match from id_add to id_remove */
-+ memset(&buf, 0, sizeof(buf));
-+
-+ buf.cmd.size = sizeof(buf);
-+ buf.cmd.cookie = 0xdeafbeefdeaddead;
-+ buf.cmd.flags = KDBUS_MATCH_REPLACE;
-+ buf.item.size = sizeof(buf.item);
-+ buf.item.type = KDBUS_ITEM_ID_REMOVE;
-+ buf.item.chg.id = KDBUS_MATCH_ID_ANY;
-+
-+ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
-+
-+ /* create 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+ id = conn->id;
-+
-+ /* 1st connection should _not_ have received a notification */
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret != 0);
-+
-+ /* remove 2nd connection */
-+ kdbus_conn_free(conn);
-+
-+ /* 1st connection should _now_ have received a notification */
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_ID_REMOVE);
-+ ASSERT_RETURN(msg->items[0].id_change.id == id);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_match_name_add(struct kdbus_test_env *env)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_notify_name_change chg;
-+ } item;
-+ char name[64];
-+ } buf;
-+ struct kdbus_msg *msg;
-+ char *name;
-+ int ret;
-+
-+ name = "foo.bla.blaz";
-+
-+ /* install the match rule */
-+ memset(&buf, 0, sizeof(buf));
-+ buf.item.type = KDBUS_ITEM_NAME_ADD;
-+ buf.item.chg.old_id.id = KDBUS_MATCH_ID_ANY;
-+ buf.item.chg.new_id.id = KDBUS_MATCH_ID_ANY;
-+ strncpy(buf.name, name, sizeof(buf.name) - 1);
-+ buf.item.size = sizeof(buf.item) + strlen(buf.name) + 1;
-+ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
-+
-+ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* acquire the name */
-+ ret = kdbus_name_acquire(env->conn, name, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* we should have received a notification */
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_NAME_ADD);
-+ ASSERT_RETURN(msg->items[0].name_change.old_id.id == 0);
-+ ASSERT_RETURN(msg->items[0].name_change.new_id.id == env->conn->id);
-+ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_match_name_remove(struct kdbus_test_env *env)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_notify_name_change chg;
-+ } item;
-+ char name[64];
-+ } buf;
-+ struct kdbus_msg *msg;
-+ char *name;
-+ int ret;
-+
-+ name = "foo.bla.blaz";
-+
-+ /* acquire the name */
-+ ret = kdbus_name_acquire(env->conn, name, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* install the match rule */
-+ memset(&buf, 0, sizeof(buf));
-+ buf.item.type = KDBUS_ITEM_NAME_REMOVE;
-+ buf.item.chg.old_id.id = KDBUS_MATCH_ID_ANY;
-+ buf.item.chg.new_id.id = KDBUS_MATCH_ID_ANY;
-+ strncpy(buf.name, name, sizeof(buf.name) - 1);
-+ buf.item.size = sizeof(buf.item) + strlen(buf.name) + 1;
-+ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
-+
-+ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* release the name again */
-+ kdbus_name_release(env->conn, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* we should have received a notification */
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_NAME_REMOVE);
-+ ASSERT_RETURN(msg->items[0].name_change.old_id.id == env->conn->id);
-+ ASSERT_RETURN(msg->items[0].name_change.new_id.id == 0);
-+ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_match_name_change(struct kdbus_test_env *env)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ struct kdbus_notify_name_change chg;
-+ } item;
-+ char name[64];
-+ } buf;
-+ struct kdbus_conn *conn;
-+ struct kdbus_msg *msg;
-+ uint64_t flags;
-+ char *name = "foo.bla.baz";
-+ int ret;
-+
-+ /* acquire the name */
-+ ret = kdbus_name_acquire(env->conn, name, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* install the match rule */
-+ memset(&buf, 0, sizeof(buf));
-+ buf.item.type = KDBUS_ITEM_NAME_CHANGE;
-+ buf.item.chg.old_id.id = KDBUS_MATCH_ID_ANY;
-+ buf.item.chg.new_id.id = KDBUS_MATCH_ID_ANY;
-+ strncpy(buf.name, name, sizeof(buf.name) - 1);
-+ buf.item.size = sizeof(buf.item) + strlen(buf.name) + 1;
-+ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
-+
-+ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* create a 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ /* allow the new connection to own the same name */
-+ /* queue the 2nd connection as waiting owner */
-+ flags = KDBUS_NAME_QUEUE;
-+ ret = kdbus_name_acquire(conn, name, &flags);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(flags & KDBUS_NAME_IN_QUEUE);
-+
-+ /* release name from 1st connection */
-+ ret = kdbus_name_release(env->conn, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* we should have received a notification */
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_NAME_CHANGE);
-+ ASSERT_RETURN(msg->items[0].name_change.old_id.id == env->conn->id);
-+ ASSERT_RETURN(msg->items[0].name_change.new_id.id == conn->id);
-+ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-+
-+static int send_bloom_filter(const struct kdbus_conn *conn,
-+ uint64_t cookie,
-+ const uint8_t *filter,
-+ size_t filter_size,
-+ uint64_t filter_generation)
-+{
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_msg *msg;
-+ struct kdbus_item *item;
-+ uint64_t size;
-+ int ret;
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + filter_size;
-+
-+ msg = alloca(size);
-+
-+ memset(msg, 0, size);
-+ msg->size = size;
-+ msg->src_id = conn->id;
-+ msg->dst_id = KDBUS_DST_ID_BROADCAST;
-+ msg->flags = KDBUS_MSG_SIGNAL;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+ msg->cookie = cookie;
-+
-+ item = msg->items;
-+ item->type = KDBUS_ITEM_BLOOM_FILTER;
-+ item->size = KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) +
-+ filter_size;
-+
-+ item->bloom_filter.generation = filter_generation;
-+ memcpy(item->bloom_filter.data, filter, filter_size);
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ ret = kdbus_cmd_send(conn->fd, &cmd);
-+ if (ret < 0) {
-+ kdbus_printf("error sending message: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+int kdbus_test_match_bloom(struct kdbus_test_env *env)
-+{
-+ struct {
-+ struct kdbus_cmd_match cmd;
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ uint8_t data_gen0[64];
-+ uint8_t data_gen1[64];
-+ } item;
-+ } buf;
-+ struct kdbus_conn *conn;
-+ struct kdbus_msg *msg;
-+ uint64_t cookie = 0xf000f00f;
-+ uint8_t filter[64];
-+ int ret;
-+
-+ /* install the match rule */
-+ memset(&buf, 0, sizeof(buf));
-+ buf.cmd.size = sizeof(buf);
-+
-+ buf.item.size = sizeof(buf.item);
-+ buf.item.type = KDBUS_ITEM_BLOOM_MASK;
-+ buf.item.data_gen0[0] = 0x55;
-+ buf.item.data_gen0[63] = 0x80;
-+
-+ buf.item.data_gen1[1] = 0xaa;
-+ buf.item.data_gen1[9] = 0x02;
-+
-+ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* create a 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ /* a message with a 0'ed out filter must not reach the other peer */
-+ memset(filter, 0, sizeof(filter));
-+ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ /* now set the filter to the connection's mask and expect success */
-+ filter[0] = 0x55;
-+ filter[63] = 0x80;
-+ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ /* broaden the filter and try again. this should also succeed. */
-+ filter[0] = 0xff;
-+ filter[8] = 0xff;
-+ filter[63] = 0xff;
-+ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ /* the same filter must not match against bloom generation 1 */
-+ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ /* set a different filter and try again */
-+ filter[1] = 0xaa;
-+ filter[9] = 0x02;
-+ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(env->conn, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-message.c b/tools/testing/selftests/kdbus/test-message.c
-new file mode 100644
-index 0000000..563dc85
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-message.c
-@@ -0,0 +1,734 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <time.h>
-+#include <stdbool.h>
-+#include <sys/eventfd.h>
-+#include <sys/types.h>
-+#include <sys/wait.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+/* maximum number of queued messages from the same individual user */
-+#define KDBUS_CONN_MAX_MSGS 256
-+
-+/* maximum number of queued requests waiting for a reply */
-+#define KDBUS_CONN_MAX_REQUESTS_PENDING 128
-+
-+/* maximum message payload size */
-+#define KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE (2 * 1024UL * 1024UL)
-+
-+int kdbus_test_message_basic(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn;
-+ struct kdbus_conn *sender;
-+ struct kdbus_msg *msg;
-+ uint64_t cookie = 0x1234abcd5678eeff;
-+ uint64_t offset;
-+ int ret;
-+
-+ sender = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(sender != NULL);
-+
-+ /* create a 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ ret = kdbus_add_match_empty(conn);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_add_match_empty(sender);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* send over 1st connection */
-+ ret = kdbus_msg_send(sender, NULL, cookie, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Make sure that we do get our own broadcasts */
-+ ret = kdbus_msg_recv(sender, &msg, &offset);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ /* ... and receive on the 2nd */
-+ ret = kdbus_msg_recv_poll(conn, 100, &msg, &offset);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ /* Msgs that expect a reply must have timeout and cookie */
-+ ret = kdbus_msg_send(sender, NULL, 0, KDBUS_MSG_EXPECT_REPLY,
-+ 0, 0, conn->id);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* Faked replies with a valid reply cookie are rejected */
-+ ret = kdbus_msg_send_reply(conn, time(NULL) ^ cookie, sender->id);
-+ ASSERT_RETURN(ret == -EBADSLT);
-+
-+ ret = kdbus_free(conn, offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(sender);
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-+
-+static int msg_recv_prio(struct kdbus_conn *conn,
-+ int64_t requested_prio,
-+ int64_t expected_prio)
-+{
-+ struct kdbus_cmd_recv recv = {
-+ .size = sizeof(recv),
-+ .flags = KDBUS_RECV_USE_PRIORITY,
-+ .priority = requested_prio,
-+ };
-+ struct kdbus_msg *msg;
-+ int ret;
-+
-+ ret = kdbus_cmd_recv(conn->fd, &recv);
-+ if (ret < 0) {
-+ kdbus_printf("error receiving message: %d (%m)\n", -errno);
-+ return ret;
-+ }
-+
-+ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
-+ kdbus_msg_dump(conn, msg);
-+
-+ if (msg->priority != expected_prio) {
-+ kdbus_printf("expected message prio %lld, got %lld\n",
-+ (unsigned long long) expected_prio,
-+ (unsigned long long) msg->priority);
-+ return -EINVAL;
-+ }
-+
-+ kdbus_msg_free(msg);
-+ ret = kdbus_free(conn, recv.msg.offset);
-+ if (ret < 0)
-+ return ret;
-+
-+ return 0;
-+}
-+
-+int kdbus_test_message_prio(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *a, *b;
-+ uint64_t cookie = 0;
-+
-+ a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(a && b);
-+
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, 25, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -600, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, 10, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -35, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -100, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, 20, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -15, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -800, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -150, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, 10, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -800, a->id) == 0);
-+ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -10, a->id) == 0);
-+
-+ ASSERT_RETURN(msg_recv_prio(a, -200, -800) == 0);
-+ ASSERT_RETURN(msg_recv_prio(a, -100, -800) == 0);
-+ ASSERT_RETURN(msg_recv_prio(a, -400, -600) == 0);
-+ ASSERT_RETURN(msg_recv_prio(a, -400, -600) == -EAGAIN);
-+ ASSERT_RETURN(msg_recv_prio(a, 10, -150) == 0);
-+ ASSERT_RETURN(msg_recv_prio(a, 10, -100) == 0);
-+
-+ kdbus_printf("--- get priority (all)\n");
-+ ASSERT_RETURN(kdbus_msg_recv(a, NULL, NULL) == 0);
-+
-+ kdbus_conn_free(a);
-+ kdbus_conn_free(b);
-+
-+ return TEST_OK;
-+}
-+
-+static int kdbus_test_notify_kernel_quota(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ unsigned int i;
-+ struct kdbus_conn *conn;
-+ struct kdbus_conn *reader;
-+ struct kdbus_msg *msg = NULL;
-+ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
-+
-+ reader = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(reader);
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ /* Register for ID signals */
-+ ret = kdbus_add_match_id(reader, 0x1, KDBUS_ITEM_ID_ADD,
-+ KDBUS_MATCH_ID_ANY);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_add_match_id(reader, 0x2, KDBUS_ITEM_ID_REMOVE,
-+ KDBUS_MATCH_ID_ANY);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Each iteration two notifications: add and remove ID */
-+ for (i = 0; i < KDBUS_CONN_MAX_MSGS / 2; i++) {
-+ struct kdbus_conn *notifier;
-+
-+ notifier = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(notifier);
-+
-+ kdbus_conn_free(notifier);
-+ }
-+
-+ /*
-+ * Now the reader queue is full with kernel notfications,
-+ * but as a user we still have room to push our messages.
-+ */
-+ ret = kdbus_msg_send(conn, NULL, 0xdeadbeef, 0, 0, 0, reader->id);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* More ID kernel notifications that will be lost */
-+ kdbus_conn_free(conn);
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ kdbus_conn_free(conn);
-+
-+ /*
-+ * We lost only 3 packets since only signal msgs are
-+ * accounted. The connection ID add/remove notification
-+ */
-+ ret = kdbus_cmd_recv(reader->fd, &recv);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(recv.return_flags & KDBUS_RECV_RETURN_DROPPED_MSGS);
-+ ASSERT_RETURN(recv.dropped_msgs == 3);
-+
-+ msg = (struct kdbus_msg *)(reader->buf + recv.msg.offset);
-+ kdbus_msg_free(msg);
-+
-+ /* Read our queue */
-+ for (i = 0; i < KDBUS_CONN_MAX_MSGS - 1; i++) {
-+ memset(&recv, 0, sizeof(recv));
-+ recv.size = sizeof(recv);
-+
-+ ret = kdbus_cmd_recv(reader->fd, &recv);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(!(recv.return_flags &
-+ KDBUS_RECV_RETURN_DROPPED_MSGS));
-+
-+ msg = (struct kdbus_msg *)(reader->buf + recv.msg.offset);
-+ kdbus_msg_free(msg);
-+ }
-+
-+ ret = kdbus_msg_recv(reader, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(reader, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ kdbus_conn_free(reader);
-+
-+ return 0;
-+}
-+
-+/* Return the number of message successfully sent */
-+static int kdbus_fill_conn_queue(struct kdbus_conn *conn_src,
-+ uint64_t dst_id,
-+ unsigned int max_msgs)
-+{
-+ unsigned int i;
-+ uint64_t cookie = 0;
-+ size_t size;
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_msg *msg;
-+ int ret;
-+
-+ size = sizeof(struct kdbus_msg);
-+ msg = malloc(size);
-+ ASSERT_RETURN_VAL(msg, -ENOMEM);
-+
-+ memset(msg, 0, size);
-+ msg->size = size;
-+ msg->src_id = conn_src->id;
-+ msg->dst_id = dst_id;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ for (i = 0; i < max_msgs; i++) {
-+ msg->cookie = cookie++;
-+ ret = kdbus_cmd_send(conn_src->fd, &cmd);
-+ if (ret < 0)
-+ break;
-+ }
-+
-+ free(msg);
-+
-+ return i;
-+}
-+
-+static int kdbus_test_activator_quota(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ unsigned int i;
-+ unsigned int activator_msgs_count = 0;
-+ uint64_t cookie = time(NULL);
-+ struct kdbus_conn *conn;
-+ struct kdbus_conn *sender;
-+ struct kdbus_conn *activator;
-+ struct kdbus_msg *msg;
-+ uint64_t flags = KDBUS_NAME_REPLACE_EXISTING;
-+ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
-+ struct kdbus_policy_access access = {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = geteuid(),
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ activator = kdbus_hello_activator(env->buspath, "foo.test.activator",
-+ &access, 1);
-+ ASSERT_RETURN(activator);
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ sender = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn || sender);
-+
-+ ret = kdbus_list(sender, KDBUS_LIST_NAMES |
-+ KDBUS_LIST_UNIQUE |
-+ KDBUS_LIST_ACTIVATORS |
-+ KDBUS_LIST_QUEUED);
-+ ASSERT_RETURN(ret == 0);
-+
-+ for (i = 0; i < KDBUS_CONN_MAX_MSGS; i++) {
-+ ret = kdbus_msg_send(sender, "foo.test.activator",
-+ cookie++, 0, 0, 0,
-+ KDBUS_DST_ID_NAME);
-+ if (ret < 0)
-+ break;
-+ activator_msgs_count++;
-+ }
-+
-+ /* we must have at least sent one message */
-+ ASSERT_RETURN_VAL(i > 0, -errno);
-+ ASSERT_RETURN(ret == -ENOBUFS);
-+
-+ /* Good, activator queue is full now */
-+
-+ /* ENXIO on direct send (activators can never be addressed by ID) */
-+ ret = kdbus_msg_send(conn, NULL, cookie++, 0, 0, 0, activator->id);
-+ ASSERT_RETURN(ret == -ENXIO);
-+
-+ /* can't queue more */
-+ ret = kdbus_msg_send(conn, "foo.test.activator", cookie++,
-+ 0, 0, 0, KDBUS_DST_ID_NAME);
-+ ASSERT_RETURN(ret == -ENOBUFS);
-+
-+ /* no match installed, so the broadcast will not inc dropped_msgs */
-+ ret = kdbus_msg_send(sender, NULL, cookie++, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Check activator queue */
-+ ret = kdbus_cmd_recv(activator->fd, &recv);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(recv.dropped_msgs == 0);
-+
-+ activator_msgs_count--;
-+
-+ msg = (struct kdbus_msg *)(activator->buf + recv.msg.offset);
-+ kdbus_msg_free(msg);
-+
-+
-+ /* Stage 1) of test check the pool memory quota */
-+
-+ /* Consume the connection pool memory */
-+ for (i = 0; i < KDBUS_CONN_MAX_MSGS; i++) {
-+ ret = kdbus_msg_send(sender, NULL,
-+ cookie++, 0, 0, 0, conn->id);
-+ if (ret < 0)
-+ break;
-+ }
-+
-+ /* consume one message, so later at least one can be moved */
-+ memset(&recv, 0, sizeof(recv));
-+ recv.size = sizeof(recv);
-+ ret = kdbus_cmd_recv(conn->fd, &recv);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(recv.dropped_msgs == 0);
-+ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
-+ kdbus_msg_free(msg);
-+
-+ /* Try to acquire the name now */
-+ ret = kdbus_name_acquire(conn, "foo.test.activator", &flags);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* try to read messages and see if we have lost some */
-+ memset(&recv, 0, sizeof(recv));
-+ recv.size = sizeof(recv);
-+ ret = kdbus_cmd_recv(conn->fd, &recv);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(recv.dropped_msgs != 0);
-+
-+ /* number of dropped msgs < received ones (at least one was moved) */
-+ ASSERT_RETURN(recv.dropped_msgs < activator_msgs_count);
-+
-+ /* Deduct the number of dropped msgs from the activator msgs */
-+ activator_msgs_count -= recv.dropped_msgs;
-+
-+ msg = (struct kdbus_msg *)(activator->buf + recv.msg.offset);
-+ kdbus_msg_free(msg);
-+
-+ /*
-+ * Release the name and hand it back to activator, now
-+ * we should have 'activator_msgs_count' msgs again in
-+ * the activator queue
-+ */
-+ ret = kdbus_name_release(conn, "foo.test.activator");
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* make sure that we got our previous activator msgs */
-+ ret = kdbus_msg_recv(activator, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->src_id == sender->id);
-+
-+ activator_msgs_count--;
-+
-+ kdbus_msg_free(msg);
-+
-+
-+ /* Stage 2) of test check max message quota */
-+
-+ /* Empty conn queue */
-+ for (i = 0; i < KDBUS_CONN_MAX_MSGS; i++) {
-+ ret = kdbus_msg_recv(conn, NULL, NULL);
-+ if (ret == -EAGAIN)
-+ break;
-+ }
-+
-+ /* fill queue with max msgs quota */
-+ ret = kdbus_fill_conn_queue(sender, conn->id, KDBUS_CONN_MAX_MSGS);
-+ ASSERT_RETURN(ret == KDBUS_CONN_MAX_MSGS);
-+
-+ /* This one is lost but it is not accounted */
-+ ret = kdbus_msg_send(sender, NULL,
-+ cookie++, 0, 0, 0, conn->id);
-+ ASSERT_RETURN(ret == -ENOBUFS);
-+
-+ /* Acquire the name again */
-+ ret = kdbus_name_acquire(conn, "foo.test.activator", &flags);
-+ ASSERT_RETURN(ret == 0);
-+
-+ memset(&recv, 0, sizeof(recv));
-+ recv.size = sizeof(recv);
-+
-+ /*
-+ * Try to read messages and make sure that we have lost all
-+ * the activator messages due to quota checks. Our queue is
-+ * already full.
-+ */
-+ ret = kdbus_cmd_recv(conn->fd, &recv);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(recv.dropped_msgs == activator_msgs_count);
-+
-+ msg = (struct kdbus_msg *)(activator->buf + recv.msg.offset);
-+ kdbus_msg_free(msg);
-+
-+ kdbus_conn_free(sender);
-+ kdbus_conn_free(conn);
-+ kdbus_conn_free(activator);
-+
-+ return 0;
-+}
-+
-+static int kdbus_test_expected_reply_quota(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ unsigned int i, n;
-+ unsigned int count;
-+ uint64_t cookie = 0x1234abcd5678eeff;
-+ struct kdbus_conn *conn;
-+ struct kdbus_conn *connections[9];
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ for (i = 0; i < 9; i++) {
-+ connections[i] = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(connections[i]);
-+ }
-+
-+ count = 0;
-+ /* Send 16 messages to 8 different connections */
-+ for (i = 0; i < 8; i++) {
-+ for (n = 0; n < 16; n++) {
-+ ret = kdbus_msg_send(conn, NULL, cookie++,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 100000000ULL, 0,
-+ connections[i]->id);
-+ if (ret < 0)
-+ break;
-+
-+ count++;
-+ }
-+ }
-+
-+ /*
-+ * We should have queued at least
-+ * KDBUS_CONN_MAX_REQUESTS_PENDING method call
-+ */
-+ ASSERT_RETURN(count == KDBUS_CONN_MAX_REQUESTS_PENDING);
-+
-+ /*
-+ * Now try to send a message to the last connection,
-+ * if we have reached KDBUS_CONN_MAX_REQUESTS_PENDING
-+ * no further requests are allowed
-+ */
-+ ret = kdbus_msg_send(conn, NULL, cookie++, KDBUS_MSG_EXPECT_REPLY,
-+ 1000000000ULL, 0, connections[8]->id);
-+ ASSERT_RETURN(ret == -EMLINK);
-+
-+ for (i = 0; i < 9; i++)
-+ kdbus_conn_free(connections[i]);
-+
-+ kdbus_conn_free(conn);
-+
-+ return 0;
-+}
-+
-+int kdbus_test_pool_quota(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *a, *b, *c;
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_item *item;
-+ struct kdbus_msg *recv_msg;
-+ struct kdbus_msg *msg;
-+ uint64_t cookie = time(NULL);
-+ uint64_t size;
-+ unsigned int i;
-+ char *payload;
-+ int ret;
-+
-+ /* just a guard */
-+ if (POOL_SIZE <= KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE ||
-+ POOL_SIZE % KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE != 0)
-+ return 0;
-+
-+ payload = calloc(KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE, sizeof(char));
-+ ASSERT_RETURN_VAL(payload, -ENOMEM);
-+
-+ a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ c = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(a && b && c);
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+
-+ msg = malloc(size);
-+ ASSERT_RETURN_VAL(msg, -ENOMEM);
-+
-+ memset(msg, 0, size);
-+ msg->size = size;
-+ msg->src_id = a->id;
-+ msg->dst_id = c->id;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+
-+ item = msg->items;
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = (uintptr_t)payload;
-+ item->vec.size = KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE;
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ /*
-+ * Send 2097248 bytes, a user is only allowed to get 33% of half of
-+ * the free space of the pool, the already used space is
-+ * accounted as free space
-+ */
-+ size += KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE;
-+ for (i = size; i < (POOL_SIZE / 2 / 3); i += size) {
-+ msg->cookie = cookie++;
-+
-+ ret = kdbus_cmd_send(a->fd, &cmd);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+ }
-+
-+ /* Try to get more than 33% */
-+ msg->cookie = cookie++;
-+ ret = kdbus_cmd_send(a->fd, &cmd);
-+ ASSERT_RETURN(ret == -ENOBUFS);
-+
-+ /* We still can pass small messages */
-+ ret = kdbus_msg_send(b, NULL, cookie++, 0, 0, 0, c->id);
-+ ASSERT_RETURN(ret == 0);
-+
-+ for (i = size; i < (POOL_SIZE / 2 / 3); i += size) {
-+ ret = kdbus_msg_recv(c, &recv_msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(recv_msg->src_id == a->id);
-+
-+ kdbus_msg_free(recv_msg);
-+ }
-+
-+ ret = kdbus_msg_recv(c, &recv_msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(recv_msg->src_id == b->id);
-+
-+ kdbus_msg_free(recv_msg);
-+
-+ ret = kdbus_msg_recv(c, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ free(msg);
-+ free(payload);
-+
-+ kdbus_conn_free(c);
-+ kdbus_conn_free(b);
-+ kdbus_conn_free(a);
-+
-+ return 0;
-+}
-+
-+int kdbus_test_message_quota(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *a, *b;
-+ uint64_t cookie = 0;
-+ int ret;
-+ int i;
-+
-+ ret = kdbus_test_activator_quota(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_test_notify_kernel_quota(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_test_pool_quota(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_test_expected_reply_quota(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ b = kdbus_hello(env->buspath, 0, NULL, 0);
-+
-+ ret = kdbus_fill_conn_queue(b, a->id, KDBUS_CONN_MAX_MSGS);
-+ ASSERT_RETURN(ret == KDBUS_CONN_MAX_MSGS);
-+
-+ ret = kdbus_msg_send(b, NULL, ++cookie, 0, 0, 0, a->id);
-+ ASSERT_RETURN(ret == -ENOBUFS);
-+
-+ for (i = 0; i < KDBUS_CONN_MAX_MSGS; ++i) {
-+ ret = kdbus_msg_recv(a, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ ret = kdbus_msg_recv(a, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ ret = kdbus_fill_conn_queue(b, a->id, KDBUS_CONN_MAX_MSGS + 1);
-+ ASSERT_RETURN(ret == KDBUS_CONN_MAX_MSGS);
-+
-+ ret = kdbus_msg_send(b, NULL, ++cookie, 0, 0, 0, a->id);
-+ ASSERT_RETURN(ret == -ENOBUFS);
-+
-+ kdbus_conn_free(a);
-+ kdbus_conn_free(b);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_memory_access(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *a, *b;
-+ struct kdbus_cmd_send cmd = {};
-+ struct kdbus_item *item;
-+ struct kdbus_msg *msg;
-+ uint64_t test_addr = 0;
-+ char line[256];
-+ uint64_t size;
-+ FILE *f;
-+ int ret;
-+
-+ /*
-+ * Search in /proc/kallsyms for the address of a kernel symbol that
-+ * should always be there, regardless of the config. Use that address
-+ * in a PAYLOAD_VEC item and make sure it's inaccessible.
-+ */
-+
-+ f = fopen("/proc/kallsyms", "r");
-+ if (!f)
-+ return TEST_SKIP;
-+
-+ while (fgets(line, sizeof(line), f)) {
-+ char *s = line;
-+
-+ if (!strsep(&s, " "))
-+ continue;
-+
-+ if (!strsep(&s, " "))
-+ continue;
-+
-+ if (!strncmp(s, "mutex_lock", 10)) {
-+ test_addr = strtoull(line, NULL, 16);
-+ break;
-+ }
-+ }
-+
-+ fclose(f);
-+
-+ if (!test_addr)
-+ return TEST_SKIP;
-+
-+ a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(a && b);
-+
-+ size = sizeof(struct kdbus_msg);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+
-+ msg = alloca(size);
-+ ASSERT_RETURN_VAL(msg, -ENOMEM);
-+
-+ memset(msg, 0, size);
-+ msg->size = size;
-+ msg->src_id = a->id;
-+ msg->dst_id = b->id;
-+ msg->payload_type = KDBUS_PAYLOAD_DBUS;
-+
-+ item = msg->items;
-+ item->type = KDBUS_ITEM_PAYLOAD_VEC;
-+ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
-+ item->vec.address = test_addr;
-+ item->vec.size = sizeof(void*);
-+ item = KDBUS_ITEM_NEXT(item);
-+
-+ cmd.size = sizeof(cmd);
-+ cmd.msg_address = (uintptr_t)msg;
-+
-+ ret = kdbus_cmd_send(a->fd, &cmd);
-+ ASSERT_RETURN(ret == -EFAULT);
-+
-+ kdbus_conn_free(b);
-+ kdbus_conn_free(a);
-+
-+ return 0;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-metadata-ns.c b/tools/testing/selftests/kdbus/test-metadata-ns.c
-new file mode 100644
-index 0000000..1f6edc0
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-metadata-ns.c
-@@ -0,0 +1,500 @@
-+/*
-+ * Test metadata in new namespaces. Even if our tests can run
-+ * in a namespaced setup, this test is necessary so we can inspect
-+ * metadata on the same kdbusfs but between multiple namespaces
-+ */
-+
-+#include <stdio.h>
-+#include <string.h>
-+#include <sched.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <signal.h>
-+#include <sys/wait.h>
-+#include <sys/prctl.h>
-+#include <sys/eventfd.h>
-+#include <sys/syscall.h>
-+#include <sys/capability.h>
-+#include <linux/sched.h>
-+
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+static const struct kdbus_creds privileged_creds = {};
-+
-+static const struct kdbus_creds unmapped_creds = {
-+ .uid = UNPRIV_UID,
-+ .euid = UNPRIV_UID,
-+ .suid = UNPRIV_UID,
-+ .fsuid = UNPRIV_UID,
-+ .gid = UNPRIV_GID,
-+ .egid = UNPRIV_GID,
-+ .sgid = UNPRIV_GID,
-+ .fsgid = UNPRIV_GID,
-+};
-+
-+static const struct kdbus_pids unmapped_pids = {};
-+
-+/* Get only the first item */
-+static struct kdbus_item *kdbus_get_item(struct kdbus_msg *msg,
-+ uint64_t type)
-+{
-+ struct kdbus_item *item;
-+
-+ KDBUS_ITEM_FOREACH(item, msg, items)
-+ if (item->type == type)
-+ return item;
-+
-+ return NULL;
-+}
-+
-+static int kdbus_match_kdbus_creds(struct kdbus_msg *msg,
-+ const struct kdbus_creds *expected_creds)
-+{
-+ struct kdbus_item *item;
-+
-+ item = kdbus_get_item(msg, KDBUS_ITEM_CREDS);
-+ ASSERT_RETURN(item);
-+
-+ ASSERT_RETURN(memcmp(&item->creds, expected_creds,
-+ sizeof(struct kdbus_creds)) == 0);
-+
-+ return 0;
-+}
-+
-+static int kdbus_match_kdbus_pids(struct kdbus_msg *msg,
-+ const struct kdbus_pids *expected_pids)
-+{
-+ struct kdbus_item *item;
-+
-+ item = kdbus_get_item(msg, KDBUS_ITEM_PIDS);
-+ ASSERT_RETURN(item);
-+
-+ ASSERT_RETURN(memcmp(&item->pids, expected_pids,
-+ sizeof(struct kdbus_pids)) == 0);
-+
-+ return 0;
-+}
-+
-+static int __kdbus_clone_userns_test(const char *bus,
-+ struct kdbus_conn *conn,
-+ uint64_t grandpa_pid,
-+ int signal_fd)
-+{
-+ int clone_ret;
-+ int ret;
-+ struct kdbus_msg *msg = NULL;
-+ const struct kdbus_item *item;
-+ uint64_t cookie = time(NULL) ^ 0xdeadbeef;
-+ struct kdbus_conn *unpriv_conn = NULL;
-+ struct kdbus_pids parent_pids = {
-+ .pid = getppid(),
-+ .tid = getppid(),
-+ .ppid = grandpa_pid,
-+ };
-+
-+ ret = drop_privileges(UNPRIV_UID, UNPRIV_GID);
-+ ASSERT_EXIT(ret == 0);
-+
-+ unpriv_conn = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_EXIT(unpriv_conn);
-+
-+ ret = kdbus_add_match_empty(unpriv_conn);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * ping privileged connection from this new unprivileged
-+ * one
-+ */
-+
-+ ret = kdbus_msg_send(unpriv_conn, NULL, cookie, 0, 0,
-+ 0, conn->id);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * Since we just dropped privileges, the dumpable flag
-+ * was just cleared which makes the /proc/$clone_child/uid_map
-+ * to be owned by root, hence any userns uid mapping will fail
-+ * with -EPERM since the mapping will be done by uid 65534.
-+ *
-+ * To avoid this set the dumpable flag again which makes
-+ * procfs update the /proc/$clone_child/ inodes owner to 65534.
-+ *
-+ * Using this we will be able write to /proc/$clone_child/uid_map
-+ * as uid 65534 and map the uid 65534 to 0 inside the user namespace.
-+ */
-+ ret = prctl(PR_SET_DUMPABLE, SUID_DUMP_USER);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /* Make child privileged in its new userns and run tests */
-+
-+ ret = RUN_CLONE_CHILD(&clone_ret,
-+ SIGCHLD | CLONE_NEWUSER | CLONE_NEWPID,
-+ ({ 0; /* Clone setup, nothing */ }),
-+ ({
-+ eventfd_t event_status = 0;
-+ struct kdbus_conn *userns_conn;
-+
-+ /* ping connection from the new user namespace */
-+ userns_conn = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_EXIT(userns_conn);
-+
-+ ret = kdbus_add_match_empty(userns_conn);
-+ ASSERT_EXIT(ret == 0);
-+
-+ cookie++;
-+ ret = kdbus_msg_send(userns_conn, NULL, cookie,
-+ 0, 0, 0, conn->id);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /* Parent did send */
-+ ret = eventfd_read(signal_fd, &event_status);
-+ ASSERT_RETURN(ret >= 0 && event_status == 1);
-+
-+ /*
-+ * Receive from privileged connection
-+ */
-+ kdbus_printf("Privileged → unprivileged/privileged "
-+ "in its userns "
-+ "(different userns and pidns):\n");
-+ ret = kdbus_msg_recv_poll(userns_conn, 300, &msg, NULL);
-+ ASSERT_EXIT(ret == 0);
-+ ASSERT_EXIT(msg->dst_id == userns_conn->id);
-+
-+ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
-+ ASSERT_EXIT(item);
-+
-+ /* uid/gid not mapped, so we have unpriv cached creds */
-+ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * Diffent pid namepsaces. This is the child pidns
-+ * so it should not see its parent kdbus_pids
-+ */
-+ ret = kdbus_match_kdbus_pids(msg, &unmapped_pids);
-+ ASSERT_EXIT(ret == 0);
-+
-+ kdbus_msg_free(msg);
-+
-+
-+ /*
-+ * Receive broadcast from privileged connection
-+ */
-+ kdbus_printf("Privileged → unprivileged/privileged "
-+ "in its userns "
-+ "(different userns and pidns):\n");
-+ ret = kdbus_msg_recv_poll(userns_conn, 300, &msg, NULL);
-+ ASSERT_EXIT(ret == 0);
-+ ASSERT_EXIT(msg->dst_id == KDBUS_DST_ID_BROADCAST);
-+
-+ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
-+ ASSERT_EXIT(item);
-+
-+ /* uid/gid not mapped, so we have unpriv cached creds */
-+ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * Diffent pid namepsaces. This is the child pidns
-+ * so it should not see its parent kdbus_pids
-+ */
-+ ret = kdbus_match_kdbus_pids(msg, &unmapped_pids);
-+ ASSERT_EXIT(ret == 0);
-+
-+ kdbus_msg_free(msg);
-+
-+ kdbus_conn_free(userns_conn);
-+ }),
-+ ({
-+ /* Parent setup map child uid/gid */
-+ ret = userns_map_uid_gid(pid, "0 65534 1", "0 65534 1");
-+ ASSERT_EXIT(ret == 0);
-+ }),
-+ ({ 0; }));
-+ /* Unprivileged was not able to create user namespace */
-+ if (clone_ret == -EPERM) {
-+ kdbus_printf("-- CLONE_NEWUSER TEST Failed for "
-+ "uid: %u\n -- Make sure that your kernel "
-+ "do not allow CLONE_NEWUSER for "
-+ "unprivileged users\n", UNPRIV_UID);
-+ ret = 0;
-+ goto out;
-+ }
-+
-+ ASSERT_EXIT(ret == 0);
-+
-+
-+ /*
-+ * Receive from privileged connection
-+ */
-+ kdbus_printf("\nPrivileged → unprivileged (same namespaces):\n");
-+ ret = kdbus_msg_recv_poll(unpriv_conn, 300, &msg, NULL);
-+
-+ ASSERT_EXIT(ret == 0);
-+ ASSERT_EXIT(msg->dst_id == unpriv_conn->id);
-+
-+ /* will get the privileged creds */
-+ ret = kdbus_match_kdbus_creds(msg, &privileged_creds);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /* Same pidns so will get the kdbus_pids */
-+ ret = kdbus_match_kdbus_pids(msg, &parent_pids);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_msg_free(msg);
-+
-+
-+ /*
-+ * Receive broadcast from privileged connection
-+ */
-+ kdbus_printf("\nPrivileged → unprivileged (same namespaces):\n");
-+ ret = kdbus_msg_recv_poll(unpriv_conn, 300, &msg, NULL);
-+
-+ ASSERT_EXIT(ret == 0);
-+ ASSERT_EXIT(msg->dst_id == KDBUS_DST_ID_BROADCAST);
-+
-+ /* will get the privileged creds */
-+ ret = kdbus_match_kdbus_creds(msg, &privileged_creds);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = kdbus_match_kdbus_pids(msg, &parent_pids);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_msg_free(msg);
-+
-+out:
-+ kdbus_conn_free(unpriv_conn);
-+
-+ return ret;
-+}
-+
-+static int kdbus_clone_userns_test(const char *bus,
-+ struct kdbus_conn *conn)
-+{
-+ int ret, status, efd;
-+ pid_t pid, ppid;
-+ uint64_t unpriv_conn_id, userns_conn_id;
-+ struct kdbus_msg *msg;
-+ const struct kdbus_item *item;
-+ struct kdbus_pids expected_pids;
-+ struct kdbus_conn *monitor;
-+
-+ kdbus_printf("STARTING TEST 'metadata-ns'.\n");
-+
-+ monitor = kdbus_hello(bus, KDBUS_HELLO_MONITOR, NULL, 0);
-+ ASSERT_EXIT(monitor);
-+
-+ /*
-+ * parent will signal to child that is in its
-+ * userns to read its queue
-+ */
-+ efd = eventfd(0, EFD_CLOEXEC);
-+ ASSERT_RETURN_VAL(efd >= 0, efd);
-+
-+ ppid = getppid();
-+
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, -errno);
-+
-+ if (pid == 0) {
-+ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
-+ ASSERT_EXIT_VAL(ret == 0, -errno);
-+
-+ ret = __kdbus_clone_userns_test(bus, conn, ppid, efd);
-+ _exit(ret);
-+ }
-+
-+
-+ /* Phase 1) privileged receives from unprivileged */
-+
-+ /*
-+ * Receive from the unprivileged child
-+ */
-+ kdbus_printf("\nUnprivileged → privileged (same namespaces):\n");
-+ ret = kdbus_msg_recv_poll(conn, 300, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ unpriv_conn_id = msg->src_id;
-+
-+ /* Unprivileged user */
-+ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Set the expected creds_pids */
-+ expected_pids = (struct kdbus_pids) {
-+ .pid = pid,
-+ .tid = pid,
-+ .ppid = getpid(),
-+ };
-+ ret = kdbus_match_kdbus_pids(msg, &expected_pids);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_msg_free(msg);
-+
-+
-+ /*
-+ * Receive from the unprivileged that is in his own
-+ * userns and pidns
-+ */
-+
-+ kdbus_printf("\nUnprivileged/privileged in its userns → privileged "
-+ "(different userns and pidns)\n");
-+ ret = kdbus_msg_recv_poll(conn, 300, &msg, NULL);
-+ if (ret == -ETIMEDOUT)
-+ /* perhaps unprivileged userns is not allowed */
-+ goto wait;
-+
-+ ASSERT_RETURN(ret == 0);
-+
-+ userns_conn_id = msg->src_id;
-+
-+ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
-+ ASSERT_RETURN(item);
-+
-+ /*
-+ * Compare received items, creds must be translated into
-+ * the receiver user namespace, so the user is unprivileged
-+ */
-+ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * We should have the kdbus_pids since we are the parent
-+ * pidns
-+ */
-+ item = kdbus_get_item(msg, KDBUS_ITEM_PIDS);
-+ ASSERT_RETURN(item);
-+
-+ ASSERT_RETURN(memcmp(&item->pids, &unmapped_pids,
-+ sizeof(struct kdbus_pids)) != 0);
-+
-+ /*
-+ * Parent pid of the unprivileged/privileged in its userns
-+ * is the unprivileged child pid that was forked here.
-+ */
-+ ASSERT_RETURN((uint64_t)pid == item->pids.ppid);
-+
-+ kdbus_msg_free(msg);
-+
-+
-+ /* Phase 2) Privileged connection sends now 3 packets */
-+
-+ /*
-+ * Sending to unprivileged connections a unicast
-+ */
-+ ret = kdbus_msg_send(conn, NULL, 0xdeadbeef, 0, 0,
-+ 0, unpriv_conn_id);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* signal to child that is in its userns */
-+ ret = eventfd_write(efd, 1);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * Sending to unprivileged/privilged in its userns
-+ * connections a unicast
-+ */
-+ ret = kdbus_msg_send(conn, NULL, 0xdeadbeef, 0, 0,
-+ 0, userns_conn_id);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Sending to unprivileged connections a broadcast
-+ */
-+ ret = kdbus_msg_send(conn, NULL, 0xdeadbeef, 0, 0,
-+ 0, KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+
-+wait:
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ASSERT_RETURN(WIFEXITED(status))
-+ ASSERT_RETURN(!WEXITSTATUS(status));
-+
-+ /* Dump monitor queue */
-+ kdbus_printf("\n\nMonitor queue:\n");
-+ for (;;) {
-+ ret = kdbus_msg_recv_poll(monitor, 100, &msg, NULL);
-+ if (ret < 0)
-+ break;
-+
-+ if (msg->payload_type == KDBUS_PAYLOAD_DBUS) {
-+ /*
-+ * Parent pidns should see all the
-+ * pids
-+ */
-+ item = kdbus_get_item(msg, KDBUS_ITEM_PIDS);
-+ ASSERT_RETURN(item);
-+
-+ ASSERT_RETURN(item->pids.pid != 0 &&
-+ item->pids.tid != 0 &&
-+ item->pids.ppid != 0);
-+ }
-+
-+ kdbus_msg_free(msg);
-+ }
-+
-+ kdbus_conn_free(monitor);
-+ close(efd);
-+
-+ return 0;
-+}
-+
-+int kdbus_test_metadata_ns(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ struct kdbus_conn *holder, *conn;
-+ struct kdbus_policy_access policy_access = {
-+ /* Allow world so we can inspect metadata in namespace */
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = geteuid(),
-+ .access = KDBUS_POLICY_TALK,
-+ };
-+
-+ /*
-+ * We require user-namespaces and all uids/gids
-+ * should be mapped (we can just require the necessary ones)
-+ */
-+ if (!config_user_ns_is_enabled() ||
-+ !all_uids_gids_are_mapped())
-+ return TEST_SKIP;
-+
-+ ret = test_is_capable(CAP_SETUID, CAP_SETGID, CAP_SYS_ADMIN, -1);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /* no enough privileges, SKIP test */
-+ if (!ret)
-+ return TEST_SKIP;
-+
-+ holder = kdbus_hello_registrar(env->buspath, "com.example.metadata",
-+ &policy_access, 1,
-+ KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(holder);
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ ret = kdbus_add_match_empty(conn);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_name_acquire(conn, "com.example.metadata", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ ret = kdbus_clone_userns_test(env->buspath, conn);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(holder);
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-monitor.c b/tools/testing/selftests/kdbus/test-monitor.c
-new file mode 100644
-index 0000000..e00d738
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-monitor.c
-@@ -0,0 +1,176 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <stdbool.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <signal.h>
-+#include <sys/time.h>
-+#include <sys/mman.h>
-+#include <sys/capability.h>
-+#include <sys/wait.h>
-+
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+int kdbus_test_monitor(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *monitor, *conn;
-+ unsigned int cookie = 0xdeadbeef;
-+ struct kdbus_msg *msg;
-+ uint64_t offset = 0;
-+ int ret;
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ /* add matches to make sure the monitor do not trigger an item add or
-+ * remove on connect and disconnect, respectively.
-+ */
-+ ret = kdbus_add_match_id(conn, 0x1, KDBUS_ITEM_ID_ADD,
-+ KDBUS_MATCH_ID_ANY);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_add_match_id(conn, 0x2, KDBUS_ITEM_ID_REMOVE,
-+ KDBUS_MATCH_ID_ANY);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* register a monitor */
-+ monitor = kdbus_hello(env->buspath, KDBUS_HELLO_MONITOR, NULL, 0);
-+ ASSERT_RETURN(monitor);
-+
-+ /* make sure we did not receive a monitor connect notification */
-+ ret = kdbus_msg_recv(conn, &msg, &offset);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ /* check that a monitor cannot acquire a name */
-+ ret = kdbus_name_acquire(monitor, "foo.bar.baz", NULL);
-+ ASSERT_RETURN(ret == -EOPNOTSUPP);
-+
-+ ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0, conn->id);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* the recipient should have gotten the message */
-+ ret = kdbus_msg_recv(conn, &msg, &offset);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+ kdbus_msg_free(msg);
-+ kdbus_free(conn, offset);
-+
-+ /* and so should the monitor */
-+ ret = kdbus_msg_recv(monitor, &msg, &offset);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+ kdbus_free(monitor, offset);
-+
-+ /* Installing matches for monitors must fais must fail */
-+ ret = kdbus_add_match_empty(monitor);
-+ ASSERT_RETURN(ret == -EOPNOTSUPP);
-+
-+ cookie++;
-+ ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* The monitor should get the message. */
-+ ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+ kdbus_free(monitor, offset);
-+
-+ /*
-+ * Since we are the only monitor, update the attach flags
-+ * and tell we are not interessted in attach flags recv
-+ */
-+
-+ ret = kdbus_conn_update_attach_flags(monitor,
-+ _KDBUS_ATTACH_ALL,
-+ 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ cookie++;
-+ ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ ret = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_msg_free(msg);
-+ kdbus_free(monitor, offset);
-+
-+ /*
-+ * Now we are interested in KDBUS_ITEM_TIMESTAMP and
-+ * KDBUS_ITEM_CREDS
-+ */
-+ ret = kdbus_conn_update_attach_flags(monitor,
-+ _KDBUS_ATTACH_ALL,
-+ KDBUS_ATTACH_TIMESTAMP |
-+ KDBUS_ATTACH_CREDS);
-+ ASSERT_RETURN(ret == 0);
-+
-+ cookie++;
-+ ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == cookie);
-+
-+ ret = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
-+ ASSERT_RETURN(ret == 1);
-+
-+ ret = kdbus_item_in_message(msg, KDBUS_ITEM_CREDS);
-+ ASSERT_RETURN(ret == 1);
-+
-+ /* the KDBUS_ITEM_PID_COMM was not requested */
-+ ret = kdbus_item_in_message(msg, KDBUS_ITEM_PID_COMM);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_msg_free(msg);
-+ kdbus_free(monitor, offset);
-+
-+ kdbus_conn_free(monitor);
-+ /* make sure we did not receive a monitor disconnect notification */
-+ ret = kdbus_msg_recv(conn, &msg, &offset);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ kdbus_conn_free(conn);
-+
-+ /* Make sure that monitor as unprivileged is not allowed */
-+ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ if (ret && all_uids_gids_are_mapped()) {
-+ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_UID, ({
-+ monitor = kdbus_hello(env->buspath,
-+ KDBUS_HELLO_MONITOR,
-+ NULL, 0);
-+ ASSERT_EXIT(!monitor && errno == EPERM);
-+
-+ _exit(EXIT_SUCCESS);
-+ }),
-+ ({ 0; }));
-+ ASSERT_RETURN(ret == 0);
-+ }
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-names.c b/tools/testing/selftests/kdbus/test-names.c
-new file mode 100644
-index 0000000..e400dc8
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-names.c
-@@ -0,0 +1,272 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <limits.h>
-+#include <getopt.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+#include "kdbus-test.h"
-+
-+struct test_name {
-+ const char *name;
-+ __u64 owner_id;
-+ __u64 flags;
-+};
-+
-+static bool conn_test_names(const struct kdbus_conn *conn,
-+ const struct test_name *tests,
-+ unsigned int n_tests)
-+{
-+ struct kdbus_cmd_list cmd_list = {};
-+ struct kdbus_info *name, *list;
-+ unsigned int i;
-+ int ret;
-+
-+ cmd_list.size = sizeof(cmd_list);
-+ cmd_list.flags = KDBUS_LIST_NAMES |
-+ KDBUS_LIST_ACTIVATORS |
-+ KDBUS_LIST_QUEUED;
-+
-+ ret = kdbus_cmd_list(conn->fd, &cmd_list);
-+ ASSERT_RETURN(ret == 0);
-+
-+ list = (struct kdbus_info *)(conn->buf + cmd_list.offset);
-+
-+ for (i = 0; i < n_tests; i++) {
-+ const struct test_name *t = tests + i;
-+ bool found = false;
-+
-+ KDBUS_FOREACH(name, list, cmd_list.list_size) {
-+ struct kdbus_item *item;
-+
-+ KDBUS_ITEM_FOREACH(item, name, items) {
-+ if (item->type != KDBUS_ITEM_OWNED_NAME ||
-+ strcmp(item->name.name, t->name) != 0)
-+ continue;
-+
-+ if (t->owner_id == name->id &&
-+ t->flags == item->name.flags) {
-+ found = true;
-+ break;
-+ }
-+ }
-+ }
-+
-+ if (!found)
-+ return false;
-+ }
-+
-+ return true;
-+}
-+
-+static bool conn_is_name_primary_owner(const struct kdbus_conn *conn,
-+ const char *needle)
-+{
-+ struct test_name t = {
-+ .name = needle,
-+ .owner_id = conn->id,
-+ .flags = KDBUS_NAME_PRIMARY,
-+ };
-+
-+ return conn_test_names(conn, &t, 1);
-+}
-+
-+int kdbus_test_name_basic(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn;
-+ char *name, *dot_name, *invalid_name, *wildcard_name;
-+ int ret;
-+
-+ name = "foo.bla.blaz";
-+ dot_name = ".bla.blaz";
-+ invalid_name = "foo";
-+ wildcard_name = "foo.bla.bl.*";
-+
-+ /* create a 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ /* acquire name "foo.bar.xxx" name */
-+ ret = kdbus_name_acquire(conn, "foo.bar.xxx", NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Name is not valid, must fail */
-+ ret = kdbus_name_acquire(env->conn, dot_name, NULL);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ ret = kdbus_name_acquire(env->conn, invalid_name, NULL);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ ret = kdbus_name_acquire(env->conn, wildcard_name, NULL);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* check that we can acquire a name */
-+ ret = kdbus_name_acquire(env->conn, name, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = conn_is_name_primary_owner(env->conn, name);
-+ ASSERT_RETURN(ret == true);
-+
-+ /* ... and release it again */
-+ ret = kdbus_name_release(env->conn, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = conn_is_name_primary_owner(env->conn, name);
-+ ASSERT_RETURN(ret == false);
-+
-+ /* check that we can't release it again */
-+ ret = kdbus_name_release(env->conn, name);
-+ ASSERT_RETURN(ret == -ESRCH);
-+
-+ /* check that we can't release a name that we don't own */
-+ ret = kdbus_name_release(env->conn, "foo.bar.xxx");
-+ ASSERT_RETURN(ret == -EADDRINUSE);
-+
-+ /* Name is not valid, must fail */
-+ ret = kdbus_name_release(env->conn, dot_name);
-+ ASSERT_RETURN(ret == -ESRCH);
-+
-+ ret = kdbus_name_release(env->conn, invalid_name);
-+ ASSERT_RETURN(ret == -ESRCH);
-+
-+ ret = kdbus_name_release(env->conn, wildcard_name);
-+ ASSERT_RETURN(ret == -ESRCH);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_name_conflict(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn;
-+ char *name;
-+ int ret;
-+
-+ name = "foo.bla.blaz";
-+
-+ /* create a 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ /* allow the new connection to own the same name */
-+ /* acquire name from the 1st connection */
-+ ret = kdbus_name_acquire(env->conn, name, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = conn_is_name_primary_owner(env->conn, name);
-+ ASSERT_RETURN(ret == true);
-+
-+ /* check that we also can't acquire it again from the 2nd connection */
-+ ret = kdbus_name_acquire(conn, name, NULL);
-+ ASSERT_RETURN(ret == -EEXIST);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_name_queue(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn;
-+ struct test_name t[2];
-+ const char *name;
-+ uint64_t flags;
-+ int ret;
-+
-+ name = "foo.bla.blaz";
-+
-+ flags = 0;
-+
-+ /* create a 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ /* allow the new connection to own the same name */
-+ /* acquire name from the 1st connection */
-+ ret = kdbus_name_acquire(env->conn, name, &flags);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = conn_is_name_primary_owner(env->conn, name);
-+ ASSERT_RETURN(ret == true);
-+
-+ /* queue the 2nd connection as waiting owner */
-+ flags = KDBUS_NAME_QUEUE;
-+ ret = kdbus_name_acquire(conn, name, &flags);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(flags & KDBUS_NAME_IN_QUEUE);
-+
-+ t[0].name = name;
-+ t[0].owner_id = env->conn->id;
-+ t[0].flags = KDBUS_NAME_PRIMARY;
-+ t[1].name = name;
-+ t[1].owner_id = conn->id;
-+ t[1].flags = KDBUS_NAME_QUEUE | KDBUS_NAME_IN_QUEUE;
-+ ret = conn_test_names(conn, t, 2);
-+ ASSERT_RETURN(ret == true);
-+
-+ /* release name from 1st connection */
-+ ret = kdbus_name_release(env->conn, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* now the name should be owned by the 2nd connection */
-+ t[0].name = name;
-+ t[0].owner_id = conn->id;
-+ t[0].flags = KDBUS_NAME_PRIMARY | KDBUS_NAME_QUEUE;
-+ ret = conn_test_names(conn, t, 1);
-+ ASSERT_RETURN(ret == true);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_name_takeover(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn;
-+ struct test_name t;
-+ const char *name;
-+ uint64_t flags;
-+ int ret;
-+
-+ name = "foo.bla.blaz";
-+
-+ flags = KDBUS_NAME_ALLOW_REPLACEMENT;
-+
-+ /* create a 2nd connection */
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn != NULL);
-+
-+ /* acquire name for 1st connection */
-+ ret = kdbus_name_acquire(env->conn, name, &flags);
-+ ASSERT_RETURN(ret == 0);
-+
-+ t.name = name;
-+ t.owner_id = env->conn->id;
-+ t.flags = KDBUS_NAME_ALLOW_REPLACEMENT | KDBUS_NAME_PRIMARY;
-+ ret = conn_test_names(conn, &t, 1);
-+ ASSERT_RETURN(ret == true);
-+
-+ /* now steal name with 2nd connection */
-+ flags = KDBUS_NAME_REPLACE_EXISTING;
-+ ret = kdbus_name_acquire(conn, name, &flags);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(flags & KDBUS_NAME_ACQUIRED);
-+
-+ ret = conn_is_name_primary_owner(conn, name);
-+ ASSERT_RETURN(ret == true);
-+
-+ kdbus_conn_free(conn);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-policy-ns.c b/tools/testing/selftests/kdbus/test-policy-ns.c
-new file mode 100644
-index 0000000..3437012
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-policy-ns.c
-@@ -0,0 +1,632 @@
-+/*
-+ * Test metadata and policies in new namespaces. Even if our tests
-+ * can run in a namespaced setup, this test is necessary so we can
-+ * inspect policies on the same kdbusfs but between multiple
-+ * namespaces.
-+ *
-+ * Copyright (C) 2014-2015 Djalal Harouni
-+ *
-+ * kdbus is free software; you can redistribute it and/or modify it under
-+ * the terms of the GNU Lesser General Public License as published by the
-+ * Free Software Foundation; either version 2.1 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <pthread.h>
-+#include <sched.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <stdint.h>
-+#include <stdbool.h>
-+#include <unistd.h>
-+#include <errno.h>
-+#include <signal.h>
-+#include <sys/wait.h>
-+#include <sys/prctl.h>
-+#include <sys/eventfd.h>
-+#include <sys/syscall.h>
-+#include <sys/capability.h>
-+#include <linux/sched.h>
-+
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+#define MAX_CONN 64
-+#define POLICY_NAME "foo.test.policy-test"
-+
-+#define KDBUS_CONN_MAX_MSGS_PER_USER 16
-+
-+/**
-+ * Note: this test can be used to inspect policy_db->talk_access_hash
-+ *
-+ * The purpose of these tests:
-+ * 1) Check KDBUS_POLICY_TALK
-+ * 2) Check the cache state: kdbus_policy_db->talk_access_hash
-+ * Should be extended
-+ */
-+
-+/**
-+ * Check a list of connections against conn_db[0]
-+ * conn_db[0] will own the name "foo.test.policy-test" and the
-+ * policy holder connection for this name will update the policy
-+ * entries, so different use cases can be tested.
-+ */
-+static struct kdbus_conn **conn_db;
-+
-+static void *kdbus_recv_echo(void *ptr)
-+{
-+ int ret;
-+ struct kdbus_conn *conn = ptr;
-+
-+ ret = kdbus_msg_recv_poll(conn, 200, NULL, NULL);
-+
-+ return (void *)(long)ret;
-+}
-+
-+/* Trigger kdbus_policy_set() */
-+static int kdbus_set_policy_talk(struct kdbus_conn *conn,
-+ const char *name,
-+ uid_t id, unsigned int type)
-+{
-+ int ret;
-+ struct kdbus_policy_access access = {
-+ .type = type,
-+ .id = id,
-+ .access = KDBUS_POLICY_TALK,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn, name, &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ return TEST_OK;
-+}
-+
-+/* return TEST_OK or TEST_ERR on failure */
-+static int kdbus_register_same_activator(char *bus, const char *name,
-+ struct kdbus_conn **c)
-+{
-+ int ret;
-+ struct kdbus_conn *activator;
-+
-+ activator = kdbus_hello_activator(bus, name, NULL, 0);
-+ if (activator) {
-+ *c = activator;
-+ fprintf(stderr, "--- error was able to register name twice '%s'.\n",
-+ name);
-+ return TEST_ERR;
-+ }
-+
-+ ret = -errno;
-+ /* -EEXIST means test succeeded */
-+ if (ret == -EEXIST)
-+ return TEST_OK;
-+
-+ return TEST_ERR;
-+}
-+
-+/* return TEST_OK or TEST_ERR on failure */
-+static int kdbus_register_policy_holder(char *bus, const char *name,
-+ struct kdbus_conn **conn)
-+{
-+ struct kdbus_conn *c;
-+ struct kdbus_policy_access access[2];
-+
-+ access[0].type = KDBUS_POLICY_ACCESS_USER;
-+ access[0].access = KDBUS_POLICY_OWN;
-+ access[0].id = geteuid();
-+
-+ access[1].type = KDBUS_POLICY_ACCESS_WORLD;
-+ access[1].access = KDBUS_POLICY_TALK;
-+ access[1].id = geteuid();
-+
-+ c = kdbus_hello_registrar(bus, name, access, 2,
-+ KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(c);
-+
-+ *conn = c;
-+
-+ return TEST_OK;
-+}
-+
-+/**
-+ * Create new threads for receiving from multiple senders,
-+ * The 'conn_db' will be populated by newly created connections.
-+ * Caller should free all allocated connections.
-+ *
-+ * return 0 on success, negative errno on failure.
-+ */
-+static int kdbus_recv_in_threads(const char *bus, const char *name,
-+ struct kdbus_conn **conn_db)
-+{
-+ int ret;
-+ bool pool_full = false;
-+ unsigned int sent_packets = 0;
-+ unsigned int lost_packets = 0;
-+ unsigned int i, tid;
-+ unsigned long dst_id;
-+ unsigned long cookie = 1;
-+ unsigned int thread_nr = MAX_CONN - 1;
-+ pthread_t thread_id[MAX_CONN - 1] = {'\0'};
-+
-+ dst_id = name ? KDBUS_DST_ID_NAME : conn_db[0]->id;
-+
-+ for (tid = 0, i = 1; tid < thread_nr; tid++, i++) {
-+ ret = pthread_create(&thread_id[tid], NULL,
-+ kdbus_recv_echo, (void *)conn_db[0]);
-+ if (ret < 0) {
-+ ret = -errno;
-+ kdbus_printf("error pthread_create: %d (%m)\n",
-+ ret);
-+ break;
-+ }
-+
-+ /* just free before re-using */
-+ kdbus_conn_free(conn_db[i]);
-+ conn_db[i] = NULL;
-+
-+ /* We need to create connections here */
-+ conn_db[i] = kdbus_hello(bus, 0, NULL, 0);
-+ if (!conn_db[i]) {
-+ ret = -errno;
-+ break;
-+ }
-+
-+ ret = kdbus_add_match_empty(conn_db[i]);
-+ if (ret < 0)
-+ break;
-+
-+ ret = kdbus_msg_send(conn_db[i], name, cookie++,
-+ 0, 0, 0, dst_id);
-+ if (ret < 0) {
-+ /*
-+ * Receivers are not reading their messages,
-+ * not scheduled ?!
-+ *
-+ * So set the pool full here, perhaps the
-+ * connection pool or queue was full, later
-+ * recheck receivers errors
-+ */
-+ if (ret == -ENOBUFS || ret == -EXFULL)
-+ pool_full = true;
-+ break;
-+ }
-+
-+ sent_packets++;
-+ }
-+
-+ for (tid = 0; tid < thread_nr; tid++) {
-+ int thread_ret = 0;
-+
-+ if (thread_id[tid]) {
-+ pthread_join(thread_id[tid], (void *)&thread_ret);
-+ if (thread_ret < 0) {
-+ /* Update only if send did not fail */
-+ if (ret == 0)
-+ ret = thread_ret;
-+
-+ lost_packets++;
-+ }
-+ }
-+ }
-+
-+ /*
-+ * When sending if we did fail with -ENOBUFS or -EXFULL
-+ * then we should have set lost_packet and we should at
-+ * least have sent_packets set to KDBUS_CONN_MAX_MSGS_PER_USER
-+ */
-+ if (pool_full) {
-+ ASSERT_RETURN(lost_packets > 0);
-+
-+ /*
-+ * We should at least send KDBUS_CONN_MAX_MSGS_PER_USER
-+ *
-+ * For every send operation we create a thread to
-+ * recv the packet, so we keep the queue clean
-+ */
-+ ASSERT_RETURN(sent_packets >= KDBUS_CONN_MAX_MSGS_PER_USER);
-+
-+ /*
-+ * Set ret to zero since we only failed due to
-+ * the receiving threads that have not been
-+ * scheduled
-+ */
-+ ret = 0;
-+ }
-+
-+ return ret;
-+}
-+
-+/* Return: TEST_OK or TEST_ERR on failure */
-+static int kdbus_normal_test(const char *bus, const char *name,
-+ struct kdbus_conn **conn_db)
-+{
-+ int ret;
-+
-+ ret = kdbus_recv_in_threads(bus, name, conn_db);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ return TEST_OK;
-+}
-+
-+static int kdbus_fork_test_by_id(const char *bus,
-+ struct kdbus_conn **conn_db,
-+ int parent_status, int child_status)
-+{
-+ int ret;
-+ pid_t pid;
-+ uint64_t cookie = 0x9876ecba;
-+ struct kdbus_msg *msg = NULL;
-+ uint64_t offset = 0;
-+ int status = 0;
-+
-+ /*
-+ * If the child_status is not EXIT_SUCCESS, then we expect
-+ * that sending from the child will fail, thus receiving
-+ * from parent must error with -ETIMEDOUT, and vice versa.
-+ */
-+ bool parent_timedout = !!child_status;
-+ bool child_timedout = !!parent_status;
-+
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, pid);
-+
-+ if (pid == 0) {
-+ struct kdbus_conn *conn_src;
-+
-+ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = drop_privileges(65534, 65534);
-+ ASSERT_EXIT(ret == 0);
-+
-+ conn_src = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_EXIT(conn_src);
-+
-+ ret = kdbus_add_match_empty(conn_src);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * child_status is always checked against send
-+ * operations, in case it fails always return
-+ * EXIT_FAILURE.
-+ */
-+ ret = kdbus_msg_send(conn_src, NULL, cookie,
-+ 0, 0, 0, conn_db[0]->id);
-+ ASSERT_EXIT(ret == child_status);
-+
-+ ret = kdbus_msg_recv_poll(conn_src, 100, NULL, NULL);
-+
-+ kdbus_conn_free(conn_src);
-+
-+ /*
-+ * Child kdbus_msg_recv_poll() should timeout since
-+ * the parent_status was set to a non EXIT_SUCCESS
-+ * value.
-+ */
-+ if (child_timedout)
-+ _exit(ret == -ETIMEDOUT ? EXIT_SUCCESS : EXIT_FAILURE);
-+
-+ _exit(ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
-+ }
-+
-+ ret = kdbus_msg_recv_poll(conn_db[0], 100, &msg, &offset);
-+ /*
-+ * If parent_timedout is set then this should fail with
-+ * -ETIMEDOUT since the child_status was set to a non
-+ * EXIT_SUCCESS value. Otherwise, assume
-+ * that kdbus_msg_recv_poll() has succeeded.
-+ */
-+ if (parent_timedout) {
-+ ASSERT_RETURN_VAL(ret == -ETIMEDOUT, TEST_ERR);
-+
-+ /* timedout no need to continue, we don't have the
-+ * child connection ID, so just terminate. */
-+ goto out;
-+ } else {
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+ }
-+
-+ ret = kdbus_msg_send(conn_db[0], NULL, ++cookie,
-+ 0, 0, 0, msg->src_id);
-+ /*
-+ * parent_status is checked against send operations,
-+ * on failures always return TEST_ERR.
-+ */
-+ ASSERT_RETURN_VAL(ret == parent_status, TEST_ERR);
-+
-+ kdbus_msg_free(msg);
-+ kdbus_free(conn_db[0], offset);
-+
-+out:
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
-+}
-+
-+/*
-+ * Return: TEST_OK, TEST_ERR or TEST_SKIP
-+ * we return TEST_OK only if the children return with the expected
-+ * 'expected_status' that is specified as an argument.
-+ */
-+static int kdbus_fork_test(const char *bus, const char *name,
-+ struct kdbus_conn **conn_db, int expected_status)
-+{
-+ pid_t pid;
-+ int ret = 0;
-+ int status = 0;
-+
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, pid);
-+
-+ if (pid == 0) {
-+ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = drop_privileges(65534, 65534);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = kdbus_recv_in_threads(bus, name, conn_db);
-+ _exit(ret == expected_status ? EXIT_SUCCESS : EXIT_FAILURE);
-+ }
-+
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
-+}
-+
-+/* Return EXIT_SUCCESS, EXIT_FAILURE or negative errno */
-+static int __kdbus_clone_userns_test(const char *bus,
-+ const char *name,
-+ struct kdbus_conn **conn_db,
-+ int expected_status)
-+{
-+ int efd;
-+ pid_t pid;
-+ int ret = 0;
-+ unsigned int uid = 65534;
-+ int status;
-+
-+ ret = drop_privileges(uid, uid);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ /*
-+ * Since we just dropped privileges, the dumpable flag was just
-+ * cleared which makes the /proc/$clone_child/uid_map to be
-+ * owned by root, hence any userns uid mapping will fail with
-+ * -EPERM since the mapping will be done by uid 65534.
-+ *
-+ * To avoid this set the dumpable flag again which makes procfs
-+ * update the /proc/$clone_child/ inodes owner to 65534.
-+ *
-+ * Using this we will be able write to /proc/$clone_child/uid_map
-+ * as uid 65534 and map the uid 65534 to 0 inside the user
-+ * namespace.
-+ */
-+ ret = prctl(PR_SET_DUMPABLE, SUID_DUMP_USER);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ /* sync parent/child */
-+ efd = eventfd(0, EFD_CLOEXEC);
-+ ASSERT_RETURN_VAL(efd >= 0, efd);
-+
-+ pid = syscall(__NR_clone, SIGCHLD|CLONE_NEWUSER, NULL);
-+ if (pid < 0) {
-+ ret = -errno;
-+ kdbus_printf("error clone: %d (%m)\n", ret);
-+ /*
-+ * Normal user not allowed to create userns,
-+ * so nothing to worry about ?
-+ */
-+ if (ret == -EPERM) {
-+ kdbus_printf("-- CLONE_NEWUSER TEST Failed for uid: %u\n"
-+ "-- Make sure that your kernel do not allow "
-+ "CLONE_NEWUSER for unprivileged users\n"
-+ "-- Upstream Commit: "
-+ "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5eaf563e\n",
-+ uid);
-+ ret = 0;
-+ }
-+
-+ return ret;
-+ }
-+
-+ if (pid == 0) {
-+ struct kdbus_conn *conn_src;
-+ eventfd_t event_status = 0;
-+
-+ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = eventfd_read(efd, &event_status);
-+ ASSERT_EXIT(ret >= 0 && event_status == 1);
-+
-+ /* ping connection from the new user namespace */
-+ conn_src = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_EXIT(conn_src);
-+
-+ ret = kdbus_add_match_empty(conn_src);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = kdbus_msg_send(conn_src, name, 0xabcd1234,
-+ 0, 0, 0, KDBUS_DST_ID_NAME);
-+ kdbus_conn_free(conn_src);
-+
-+ _exit(ret == expected_status ? EXIT_SUCCESS : EXIT_FAILURE);
-+ }
-+
-+ ret = userns_map_uid_gid(pid, "0 65534 1", "0 65534 1");
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ /* Tell child we are ready */
-+ ret = eventfd_write(efd, 1);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ close(efd);
-+
-+ return status == EXIT_SUCCESS ? TEST_OK : TEST_ERR;
-+}
-+
-+static int kdbus_clone_userns_test(const char *bus,
-+ const char *name,
-+ struct kdbus_conn **conn_db,
-+ int expected_status)
-+{
-+ pid_t pid;
-+ int ret = 0;
-+ int status;
-+
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, -errno);
-+
-+ if (pid == 0) {
-+ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
-+ if (ret < 0)
-+ _exit(EXIT_FAILURE);
-+
-+ ret = __kdbus_clone_userns_test(bus, name, conn_db,
-+ expected_status);
-+ _exit(ret);
-+ }
-+
-+ /*
-+ * Receive in the original (root privileged) user namespace,
-+ * must fail with -ETIMEDOUT.
-+ */
-+ ret = kdbus_msg_recv_poll(conn_db[0], 100, NULL, NULL);
-+ ASSERT_RETURN_VAL(ret == -ETIMEDOUT, ret);
-+
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
-+}
-+
-+int kdbus_test_policy_ns(struct kdbus_test_env *env)
-+{
-+ int i;
-+ int ret;
-+ struct kdbus_conn *activator = NULL;
-+ struct kdbus_conn *policy_holder = NULL;
-+ char *bus = env->buspath;
-+
-+ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /* no enough privileges, SKIP test */
-+ if (!ret)
-+ return TEST_SKIP;
-+
-+ /* we require user-namespaces */
-+ if (access("/proc/self/uid_map", F_OK) != 0)
-+ return TEST_SKIP;
-+
-+ /* uids/gids must be mapped */
-+ if (!all_uids_gids_are_mapped())
-+ return TEST_SKIP;
-+
-+ conn_db = calloc(MAX_CONN, sizeof(struct kdbus_conn *));
-+ ASSERT_RETURN(conn_db);
-+
-+ memset(conn_db, 0, MAX_CONN * sizeof(struct kdbus_conn *));
-+
-+ conn_db[0] = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_RETURN(conn_db[0]);
-+
-+ ret = kdbus_add_match_empty(conn_db[0]);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_fork_test_by_id(bus, conn_db, -EPERM, -EPERM);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = kdbus_register_policy_holder(bus, POLICY_NAME,
-+ &policy_holder);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Try to register the same name with an activator */
-+ ret = kdbus_register_same_activator(bus, POLICY_NAME,
-+ &activator);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Acquire POLICY_NAME */
-+ ret = kdbus_name_acquire(conn_db[0], POLICY_NAME, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_normal_test(bus, POLICY_NAME, conn_db);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_list(conn_db[0], KDBUS_LIST_NAMES |
-+ KDBUS_LIST_UNIQUE |
-+ KDBUS_LIST_ACTIVATORS |
-+ KDBUS_LIST_QUEUED);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_fork_test(bus, POLICY_NAME, conn_db, EXIT_SUCCESS);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * children connections are able to talk to conn_db[0] since
-+ * current POLICY_NAME TALK type is KDBUS_POLICY_ACCESS_WORLD,
-+ * so expect EXIT_SUCCESS when sending from child. However,
-+ * since the child's connection does not own any well-known
-+ * name, The parent connection conn_db[0] should fail with
-+ * -EPERM but since it is a privileged bus user the TALK is
-+ * allowed.
-+ */
-+ ret = kdbus_fork_test_by_id(bus, conn_db,
-+ EXIT_SUCCESS, EXIT_SUCCESS);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * Connections that can talk are perhaps being destroyed now.
-+ * Restrict the policy and purge cache entries where the
-+ * conn_db[0] is the destination.
-+ *
-+ * Now only connections with uid == 0 are allowed to talk.
-+ */
-+ ret = kdbus_set_policy_talk(policy_holder, POLICY_NAME,
-+ geteuid(), KDBUS_POLICY_ACCESS_USER);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Testing connections (FORK+DROP) again:
-+ * After setting the policy re-check connections
-+ * we expect the children to fail with -EPERM
-+ */
-+ ret = kdbus_fork_test(bus, POLICY_NAME, conn_db, -EPERM);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Now expect that both parent and child to fail.
-+ *
-+ * Child should fail with -EPERM since we just restricted
-+ * the POLICY_NAME TALK to uid 0 and its uid is 65534.
-+ *
-+ * Since the parent's connection will timeout when receiving
-+ * from the child, we never continue. FWIW just put -EPERM.
-+ */
-+ ret = kdbus_fork_test_by_id(bus, conn_db, -EPERM, -EPERM);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /* Check if the name can be reached in a new userns */
-+ ret = kdbus_clone_userns_test(bus, POLICY_NAME, conn_db, -EPERM);
-+ ASSERT_RETURN(ret == 0);
-+
-+ for (i = 0; i < MAX_CONN; i++)
-+ kdbus_conn_free(conn_db[i]);
-+
-+ kdbus_conn_free(activator);
-+ kdbus_conn_free(policy_holder);
-+
-+ free(conn_db);
-+
-+ return ret;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-policy-priv.c b/tools/testing/selftests/kdbus/test-policy-priv.c
-new file mode 100644
-index 0000000..0208638
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-policy-priv.c
-@@ -0,0 +1,1285 @@
-+#include <errno.h>
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stdint.h>
-+#include <stdbool.h>
-+#include <unistd.h>
-+#include <time.h>
-+#include <sys/capability.h>
-+#include <sys/eventfd.h>
-+#include <sys/wait.h>
-+
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+static int test_policy_priv_by_id(const char *bus,
-+ struct kdbus_conn *conn_dst,
-+ bool drop_second_user,
-+ int parent_status,
-+ int child_status)
-+{
-+ int ret = 0;
-+ uint64_t expected_cookie = time(NULL) ^ 0xdeadbeef;
-+
-+ ASSERT_RETURN(conn_dst);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, bus, ({
-+ ret = kdbus_msg_send(unpriv, NULL,
-+ expected_cookie, 0, 0, 0,
-+ conn_dst->id);
-+ ASSERT_EXIT(ret == child_status);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(conn_dst, 300, NULL, NULL);
-+ ASSERT_RETURN(ret == parent_status);
-+
-+ return 0;
-+}
-+
-+static int test_policy_priv_by_broadcast(const char *bus,
-+ struct kdbus_conn *conn_dst,
-+ int drop_second_user,
-+ int parent_status,
-+ int child_status)
-+{
-+ int efd;
-+ int ret = 0;
-+ eventfd_t event_status = 0;
-+ struct kdbus_msg *msg = NULL;
-+ uid_t second_uid = UNPRIV_UID;
-+ gid_t second_gid = UNPRIV_GID;
-+ struct kdbus_conn *child_2 = conn_dst;
-+ uint64_t expected_cookie = time(NULL) ^ 0xdeadbeef;
-+
-+ /* Drop to another unprivileged user other than UNPRIV_UID */
-+ if (drop_second_user == DROP_OTHER_UNPRIV) {
-+ second_uid = UNPRIV_UID - 1;
-+ second_gid = UNPRIV_GID - 1;
-+ }
-+
-+ /* child will signal parent to send broadcast */
-+ efd = eventfd(0, EFD_CLOEXEC);
-+ ASSERT_RETURN_VAL(efd >= 0, efd);
-+
-+ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({
-+ struct kdbus_conn *child;
-+
-+ child = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_EXIT(child);
-+
-+ ret = kdbus_add_match_empty(child);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /* signal parent */
-+ ret = eventfd_write(efd, 1);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /* Use a little bit high time */
-+ ret = kdbus_msg_recv_poll(child, 500, &msg, NULL);
-+ ASSERT_EXIT(ret == child_status);
-+
-+ /*
-+ * If we expect the child to get the broadcast
-+ * message, then check the received cookie.
-+ */
-+ if (ret == 0) {
-+ ASSERT_EXIT(expected_cookie == msg->cookie);
-+ }
-+
-+ /* Use expected_cookie since 'msg' might be NULL */
-+ ret = kdbus_msg_send(child, NULL, expected_cookie + 1,
-+ 0, 0, 0, KDBUS_DST_ID_BROADCAST);
-+ ASSERT_EXIT(ret == 0);
-+
-+ kdbus_msg_free(msg);
-+ kdbus_conn_free(child);
-+ }),
-+ ({
-+ if (drop_second_user == DO_NOT_DROP) {
-+ ASSERT_RETURN(child_2);
-+
-+ ret = eventfd_read(efd, &event_status);
-+ ASSERT_RETURN(ret >= 0 && event_status == 1);
-+
-+ ret = kdbus_msg_send(child_2, NULL,
-+ expected_cookie, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* drop own broadcast */
-+ ret = kdbus_msg_recv(child_2, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->src_id == child_2->id);
-+ kdbus_msg_free(msg);
-+
-+ /* Use a little bit high time */
-+ ret = kdbus_msg_recv_poll(child_2, 1000,
-+ &msg, NULL);
-+ ASSERT_RETURN(ret == parent_status);
-+
-+ /*
-+ * Check returned cookie in case we expect
-+ * success.
-+ */
-+ if (ret == 0) {
-+ ASSERT_RETURN(msg->cookie ==
-+ expected_cookie + 1);
-+ }
-+
-+ kdbus_msg_free(msg);
-+ } else {
-+ /*
-+ * Two unprivileged users will try to
-+ * communicate using broadcast.
-+ */
-+ ret = RUN_UNPRIVILEGED(second_uid, second_gid, ({
-+ child_2 = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_EXIT(child_2);
-+
-+ ret = kdbus_add_match_empty(child_2);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = eventfd_read(efd, &event_status);
-+ ASSERT_EXIT(ret >= 0 && event_status == 1);
-+
-+ ret = kdbus_msg_send(child_2, NULL,
-+ expected_cookie, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /* drop own broadcast */
-+ ret = kdbus_msg_recv(child_2, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->src_id == child_2->id);
-+ kdbus_msg_free(msg);
-+
-+ /* Use a little bit high time */
-+ ret = kdbus_msg_recv_poll(child_2, 1000,
-+ &msg, NULL);
-+ ASSERT_EXIT(ret == parent_status);
-+
-+ /*
-+ * Check returned cookie in case we expect
-+ * success.
-+ */
-+ if (ret == 0) {
-+ ASSERT_EXIT(msg->cookie ==
-+ expected_cookie + 1);
-+ }
-+
-+ kdbus_msg_free(msg);
-+ kdbus_conn_free(child_2);
-+ }),
-+ ({ 0; }));
-+ ASSERT_RETURN(ret == 0);
-+ }
-+ }));
-+ ASSERT_RETURN(ret == 0);
-+
-+ close(efd);
-+
-+ return ret;
-+}
-+
-+static void nosig(int sig)
-+{
-+}
-+
-+static int test_priv_before_policy_upload(struct kdbus_test_env *env)
-+{
-+ int ret = 0;
-+ struct kdbus_conn *conn;
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ /*
-+ * Make sure unprivileged bus user cannot acquire names
-+ * before registring any policy holder.
-+ */
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret < 0);
-+ }));
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Make sure unprivileged bus users cannot talk by default
-+ * to privileged ones, unless a policy holder that allows
-+ * this was uploaded.
-+ */
-+
-+ ret = test_policy_priv_by_id(env->buspath, conn, false,
-+ -ETIMEDOUT, -EPERM);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Activate matching for a privileged connection */
-+ ret = kdbus_add_match_empty(conn);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * First make sure that BROADCAST with msg flag
-+ * KDBUS_MSG_EXPECT_REPLY will fail with -ENOTUNIQ
-+ */
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_msg_send(unpriv, NULL, 0xdeadbeef,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 5000000000ULL, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_EXIT(ret == -ENOTUNIQ);
-+ }));
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Test broadcast with a privileged connection.
-+ *
-+ * The first unprivileged receiver should not get the
-+ * broadcast message sent by the privileged connection,
-+ * since there is no a TALK policy that allows the
-+ * unprivileged to TALK to the privileged connection. It
-+ * will fail with -ETIMEDOUT
-+ *
-+ * Then second case:
-+ * The privileged connection should get the broadcast
-+ * message from the unprivileged one. Since the receiver is
-+ * a privileged bus user and it has default TALK access to
-+ * all connections it will receive those.
-+ */
-+
-+ ret = test_policy_priv_by_broadcast(env->buspath, conn,
-+ DO_NOT_DROP,
-+ 0, -ETIMEDOUT);
-+ ASSERT_RETURN(ret == 0);
-+
-+
-+ /*
-+ * Test broadcast with two unprivileged connections running
-+ * under the same user.
-+ *
-+ * Both connections should succeed.
-+ */
-+
-+ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
-+ DROP_SAME_UNPRIV, 0, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Test broadcast with two unprivileged connections running
-+ * under different users.
-+ *
-+ * Both connections will fail with -ETIMEDOUT.
-+ */
-+
-+ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
-+ DROP_OTHER_UNPRIV,
-+ -ETIMEDOUT, -ETIMEDOUT);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(conn);
-+
-+ return ret;
-+}
-+
-+static int test_broadcast_after_policy_upload(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ int efd;
-+ eventfd_t event_status = 0;
-+ struct kdbus_msg *msg = NULL;
-+ struct kdbus_conn *owner_a, *owner_b;
-+ struct kdbus_conn *holder_a, *holder_b;
-+ struct kdbus_policy_access access = {};
-+ uint64_t expected_cookie = time(NULL) ^ 0xdeadbeef;
-+
-+ owner_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(owner_a);
-+
-+ ret = kdbus_name_acquire(owner_a, "com.example.broadcastA", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged bus users cannot talk by default
-+ * to privileged ones, unless a policy holder that allows
-+ * this was uploaded.
-+ */
-+
-+ ++expected_cookie;
-+ ret = test_policy_priv_by_id(env->buspath, owner_a, false,
-+ -ETIMEDOUT, -EPERM);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Make sure that privileged won't receive broadcasts unless
-+ * it installs a match. It will fail with -ETIMEDOUT
-+ *
-+ * At same time check that the unprivileged connection will
-+ * not receive the broadcast message from the privileged one
-+ * since the privileged one owns a name with a restricted
-+ * policy TALK (actually the TALK policy is still not
-+ * registered so we fail by default), thus the unprivileged
-+ * receiver is not able to TALK to that name.
-+ */
-+
-+ /* Activate matching for a privileged connection */
-+ ret = kdbus_add_match_empty(owner_a);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Redo the previous test. The privileged conn owner_a is
-+ * able to TALK to any connection so it will receive the
-+ * broadcast message now.
-+ */
-+
-+ ret = test_policy_priv_by_broadcast(env->buspath, owner_a,
-+ DO_NOT_DROP,
-+ 0, -ETIMEDOUT);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Test that broadcast between two unprivileged users running
-+ * under the same user still succeed.
-+ */
-+
-+ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
-+ DROP_SAME_UNPRIV, 0, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Test broadcast with two unprivileged connections running
-+ * under different users.
-+ *
-+ * Both connections will fail with -ETIMEDOUT.
-+ */
-+
-+ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
-+ DROP_OTHER_UNPRIV,
-+ -ETIMEDOUT, -ETIMEDOUT);
-+ ASSERT_RETURN(ret == 0);
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = geteuid(),
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ holder_a = kdbus_hello_registrar(env->buspath,
-+ "com.example.broadcastA",
-+ &access, 1,
-+ KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(holder_a);
-+
-+ holder_b = kdbus_hello_registrar(env->buspath,
-+ "com.example.broadcastB",
-+ &access, 1,
-+ KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(holder_b);
-+
-+ /* Free connections and their received messages and restart */
-+ kdbus_conn_free(owner_a);
-+
-+ owner_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(owner_a);
-+
-+ /* Activate matching for a privileged connection */
-+ ret = kdbus_add_match_empty(owner_a);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_name_acquire(owner_a, "com.example.broadcastA", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ owner_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(owner_b);
-+
-+ ret = kdbus_name_acquire(owner_b, "com.example.broadcastB", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /* Activate matching for a privileged connection */
-+ ret = kdbus_add_match_empty(owner_b);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Test that even if "com.example.broadcastA" and
-+ * "com.example.broadcastB" do have a TALK access by default
-+ * they are able to signal each other using broadcast due to
-+ * the fact they are privileged connections, they receive
-+ * all broadcasts if the match allows it.
-+ */
-+
-+ ++expected_cookie;
-+ ret = kdbus_msg_send(owner_a, NULL, expected_cookie, 0,
-+ 0, 0, KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv_poll(owner_a, 100, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == expected_cookie);
-+
-+ /* Check src ID */
-+ ASSERT_RETURN(msg->src_id == owner_a->id);
-+
-+ kdbus_msg_free(msg);
-+
-+ ret = kdbus_msg_recv_poll(owner_b, 100, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+ ASSERT_RETURN(msg->cookie == expected_cookie);
-+
-+ /* Check src ID */
-+ ASSERT_RETURN(msg->src_id == owner_a->id);
-+
-+ kdbus_msg_free(msg);
-+
-+ /* Release name "com.example.broadcastB" */
-+
-+ ret = kdbus_name_release(owner_b, "com.example.broadcastB");
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /* KDBUS_POLICY_OWN for unprivileged connections */
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = geteuid(),
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ /* Update the policy so unprivileged will own the name */
-+
-+ ret = kdbus_conn_update_policy(holder_b,
-+ "com.example.broadcastB",
-+ &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Send broadcasts from an unprivileged connection that
-+ * owns a name "com.example.broadcastB".
-+ *
-+ * We'll have four destinations here:
-+ *
-+ * 1) destination owner_a: privileged connection that owns
-+ * "com.example.broadcastA". It will receive the broadcast
-+ * since it is a privileged has default TALK access to all
-+ * connections, and it is subscribed to the match.
-+ * Will succeed.
-+ *
-+ * owner_b: privileged connection (running under a different
-+ * uid) that do not own names, but with an empty broadcast
-+ * match, so it will receive broadcasts since it has default
-+ * TALK access to all connection.
-+ *
-+ * unpriv_a: unpriv connection that do not own any name.
-+ * It will receive the broadcast since it is running under
-+ * the same user of the one broadcasting and did install
-+ * matches. It should get the message.
-+ *
-+ * unpriv_b: unpriv connection is not interested in broadcast
-+ * messages, so it did not install broadcast matches. Should
-+ * fail with -ETIMEDOUT
-+ */
-+
-+ ++expected_cookie;
-+ efd = eventfd(0, EFD_CLOEXEC);
-+ ASSERT_RETURN_VAL(efd >= 0, efd);
-+
-+ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_UID, ({
-+ struct kdbus_conn *unpriv_owner;
-+ struct kdbus_conn *unpriv_a, *unpriv_b;
-+
-+ unpriv_owner = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_EXIT(unpriv_owner);
-+
-+ unpriv_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_EXIT(unpriv_a);
-+
-+ unpriv_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_EXIT(unpriv_b);
-+
-+ ret = kdbus_name_acquire(unpriv_owner,
-+ "com.example.broadcastB",
-+ NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ ret = kdbus_add_match_empty(unpriv_a);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /* Signal that we are doing broadcasts */
-+ ret = eventfd_write(efd, 1);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * Do broadcast from a connection that owns the
-+ * names "com.example.broadcastB".
-+ */
-+ ret = kdbus_msg_send(unpriv_owner, NULL,
-+ expected_cookie,
-+ 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_EXIT(ret == 0);
-+
-+ /*
-+ * Unprivileged connection running under the same
-+ * user. It should succeed.
-+ */
-+ ret = kdbus_msg_recv_poll(unpriv_a, 300, &msg, NULL);
-+ ASSERT_EXIT(ret == 0 && msg->cookie == expected_cookie);
-+
-+ /*
-+ * Did not install matches, not interested in
-+ * broadcasts
-+ */
-+ ret = kdbus_msg_recv_poll(unpriv_b, 300, NULL, NULL);
-+ ASSERT_EXIT(ret == -ETIMEDOUT);
-+ }),
-+ ({
-+ ret = eventfd_read(efd, &event_status);
-+ ASSERT_RETURN(ret >= 0 && event_status == 1);
-+
-+ /*
-+ * owner_a must fail with -ETIMEDOUT, since it owns
-+ * name "com.example.broadcastA" and its TALK
-+ * access is restriced.
-+ */
-+ ret = kdbus_msg_recv_poll(owner_a, 300, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* confirm the received cookie */
-+ ASSERT_RETURN(msg->cookie == expected_cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ /*
-+ * owner_b got the broadcast from an unprivileged
-+ * connection.
-+ */
-+ ret = kdbus_msg_recv_poll(owner_b, 300, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* confirm the received cookie */
-+ ASSERT_RETURN(msg->cookie == expected_cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ }));
-+ ASSERT_RETURN(ret == 0);
-+
-+ close(efd);
-+
-+ /*
-+ * Test broadcast with two unprivileged connections running
-+ * under different users.
-+ *
-+ * Both connections will fail with -ETIMEDOUT.
-+ */
-+
-+ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
-+ DROP_OTHER_UNPRIV,
-+ -ETIMEDOUT, -ETIMEDOUT);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* Drop received broadcasts by privileged */
-+ ret = kdbus_msg_recv_poll(owner_a, 100, NULL, NULL);
-+ ret = kdbus_msg_recv_poll(owner_a, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(owner_a, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ ret = kdbus_msg_recv_poll(owner_b, 100, NULL, NULL);
-+ ret = kdbus_msg_recv_poll(owner_b, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_recv(owner_b, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
-+
-+ /*
-+ * Perform last tests, allow others to talk to name
-+ * "com.example.broadcastA". So now receiving broadcasts
-+ * from it should succeed since the TALK policy allow it.
-+ */
-+
-+ /* KDBUS_POLICY_OWN for unprivileged connections */
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = geteuid(),
-+ .access = KDBUS_POLICY_TALK,
-+ };
-+
-+ ret = kdbus_conn_update_policy(holder_a,
-+ "com.example.broadcastA",
-+ &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Unprivileged is able to TALK to "com.example.broadcastA"
-+ * now so it will receive its broadcasts
-+ */
-+ ret = test_policy_priv_by_broadcast(env->buspath, owner_a,
-+ DO_NOT_DROP, 0, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ++expected_cookie;
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.broadcastB",
-+ NULL);
-+ ASSERT_EXIT(ret >= 0);
-+ ret = kdbus_msg_send(unpriv, NULL, expected_cookie,
-+ 0, 0, 0, KDBUS_DST_ID_BROADCAST);
-+ ASSERT_EXIT(ret == 0);
-+ }));
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* owner_a is privileged it will get the broadcast now. */
-+ ret = kdbus_msg_recv_poll(owner_a, 300, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* confirm the received cookie */
-+ ASSERT_RETURN(msg->cookie == expected_cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ /*
-+ * owner_a released name "com.example.broadcastA". It should
-+ * receive broadcasts since it is still privileged and has
-+ * the right match.
-+ *
-+ * Unprivileged connection will own a name and will try to
-+ * signal to the privileged connection.
-+ */
-+
-+ ret = kdbus_name_release(owner_a, "com.example.broadcastA");
-+ ASSERT_EXIT(ret >= 0);
-+
-+ ++expected_cookie;
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.broadcastB",
-+ NULL);
-+ ASSERT_EXIT(ret >= 0);
-+ ret = kdbus_msg_send(unpriv, NULL, expected_cookie,
-+ 0, 0, 0, KDBUS_DST_ID_BROADCAST);
-+ ASSERT_EXIT(ret == 0);
-+ }));
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* owner_a will get the broadcast now. */
-+ ret = kdbus_msg_recv_poll(owner_a, 300, &msg, NULL);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* confirm the received cookie */
-+ ASSERT_RETURN(msg->cookie == expected_cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ kdbus_conn_free(owner_a);
-+ kdbus_conn_free(owner_b);
-+ kdbus_conn_free(holder_a);
-+ kdbus_conn_free(holder_b);
-+
-+ return 0;
-+}
-+
-+static int test_policy_priv(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn_a, *conn_b, *conn, *owner;
-+ struct kdbus_policy_access access, *acc;
-+ sigset_t sset;
-+ size_t num;
-+ int ret;
-+
-+ /*
-+ * Make sure we have CAP_SETUID/SETGID so we can drop privileges
-+ */
-+
-+ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ if (!ret)
-+ return TEST_SKIP;
-+
-+ /* make sure that uids and gids are mapped */
-+ if (!all_uids_gids_are_mapped())
-+ return TEST_SKIP;
-+
-+ /*
-+ * Setup:
-+ * conn_a: policy holder for com.example.a
-+ * conn_b: name holder of com.example.b
-+ */
-+
-+ signal(SIGUSR1, nosig);
-+ sigemptyset(&sset);
-+ sigaddset(&sset, SIGUSR1);
-+ sigprocmask(SIG_BLOCK, &sset, NULL);
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ /*
-+ * Before registering any policy holder, make sure that the
-+ * bus is secure by default. This test is necessary, it catches
-+ * several cases where old D-Bus was vulnerable.
-+ */
-+
-+ ret = test_priv_before_policy_upload(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Make sure unprivileged are not able to register policy
-+ * holders
-+ */
-+
-+ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({
-+ struct kdbus_conn *holder;
-+
-+ holder = kdbus_hello_registrar(env->buspath,
-+ "com.example.a", NULL, 0,
-+ KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_EXIT(holder == NULL && errno == EPERM);
-+ }),
-+ ({ 0; }));
-+ ASSERT_RETURN(ret == 0);
-+
-+
-+ /* Register policy holder */
-+
-+ conn_a = kdbus_hello_registrar(env->buspath, "com.example.a",
-+ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(conn_a);
-+
-+ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_b);
-+
-+ ret = kdbus_name_acquire(conn_b, "com.example.b", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /*
-+ * Make sure bus-owners can always acquire names.
-+ */
-+ ret = kdbus_name_acquire(conn, "com.example.a", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ kdbus_conn_free(conn);
-+
-+ /*
-+ * Make sure unprivileged users cannot acquire names with default
-+ * policy assigned.
-+ */
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret < 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged users can acquire names if we make them
-+ * world-accessible.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = 0,
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ /*
-+ * Make sure unprivileged/normal connections are not able
-+ * to update policies
-+ */
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_conn_update_policy(unpriv, "com.example.a",
-+ &access, 1);
-+ ASSERT_EXIT(ret == -EOPNOTSUPP);
-+ }));
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged users can acquire names if we make them
-+ * gid-accessible. But only if the gid matches.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_GROUP,
-+ .id = UNPRIV_GID,
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_GROUP,
-+ .id = 1,
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret < 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged users can acquire names if we make them
-+ * uid-accessible. But only if the uid matches.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = UNPRIV_UID,
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 1,
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret < 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged users cannot acquire names if no owner-policy
-+ * matches, even if SEE/TALK policies match.
-+ */
-+
-+ num = 4;
-+ acc = (struct kdbus_policy_access[]){
-+ {
-+ .type = KDBUS_POLICY_ACCESS_GROUP,
-+ .id = UNPRIV_GID,
-+ .access = KDBUS_POLICY_SEE,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = UNPRIV_UID,
-+ .access = KDBUS_POLICY_TALK,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = 0,
-+ .access = KDBUS_POLICY_TALK,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = 0,
-+ .access = KDBUS_POLICY_SEE,
-+ },
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", acc, num);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret < 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged users can acquire names if the only matching
-+ * policy is somewhere in the middle.
-+ */
-+
-+ num = 5;
-+ acc = (struct kdbus_policy_access[]){
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 1,
-+ .access = KDBUS_POLICY_OWN,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 2,
-+ .access = KDBUS_POLICY_OWN,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = UNPRIV_UID,
-+ .access = KDBUS_POLICY_OWN,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 3,
-+ .access = KDBUS_POLICY_OWN,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 4,
-+ .access = KDBUS_POLICY_OWN,
-+ },
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", acc, num);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Clear policies
-+ */
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", NULL, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Make sure privileged bus users can _always_ talk to others.
-+ */
-+
-+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ ret = kdbus_msg_send(conn, "com.example.b", 0xdeadbeef, 0, 0, 0, 0);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(conn_b, 300, NULL, NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ kdbus_conn_free(conn);
-+
-+ /*
-+ * Make sure unprivileged bus users cannot talk by default.
-+ */
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret == -EPERM);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged bus users can talk to equals, even without
-+ * policy.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = UNPRIV_UID,
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.c", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ struct kdbus_conn *owner;
-+
-+ owner = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(owner);
-+
-+ ret = kdbus_name_acquire(owner, "com.example.c", NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ ret = kdbus_msg_send(unpriv, "com.example.c", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret >= 0);
-+ ret = kdbus_msg_recv_poll(owner, 100, NULL, NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ kdbus_conn_free(owner);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged bus users can talk to privileged users if a
-+ * suitable UID policy is set.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = UNPRIV_UID,
-+ .access = KDBUS_POLICY_TALK,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret >= 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged bus users can talk to privileged users if a
-+ * suitable GID policy is set.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_GROUP,
-+ .id = UNPRIV_GID,
-+ .access = KDBUS_POLICY_TALK,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret >= 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged bus users can talk to privileged users if a
-+ * suitable WORLD policy is set.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = 0,
-+ .access = KDBUS_POLICY_TALK,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret >= 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged bus users cannot talk to privileged users if
-+ * no suitable policy is set.
-+ */
-+
-+ num = 5;
-+ acc = (struct kdbus_policy_access[]){
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 0,
-+ .access = KDBUS_POLICY_OWN,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 1,
-+ .access = KDBUS_POLICY_TALK,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = UNPRIV_UID,
-+ .access = KDBUS_POLICY_SEE,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 3,
-+ .access = KDBUS_POLICY_TALK,
-+ },
-+ {
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = 4,
-+ .access = KDBUS_POLICY_TALK,
-+ },
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.b", acc, num);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret == -EPERM);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure unprivileged bus users can talk to privileged users if a
-+ * suitable OWN privilege overwrites TALK.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = 0,
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret >= 0);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /*
-+ * Make sure the TALK cache is reset correctly when policies are
-+ * updated.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = 0,
-+ .access = KDBUS_POLICY_TALK,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
-+ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.b",
-+ NULL, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret == -EPERM);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /*
-+ * Make sure the TALK cache is reset correctly when policy holders
-+ * disconnect.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_WORLD,
-+ .id = 0,
-+ .access = KDBUS_POLICY_OWN,
-+ };
-+
-+ conn = kdbus_hello_registrar(env->buspath, "com.example.c",
-+ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(conn);
-+
-+ ret = kdbus_conn_update_policy(conn, "com.example.c", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ owner = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(owner);
-+
-+ ret = kdbus_name_acquire(owner, "com.example.c", NULL);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({
-+ struct kdbus_conn *unpriv;
-+
-+ /* wait for parent to be finished */
-+ sigemptyset(&sset);
-+ ret = sigsuspend(&sset);
-+ ASSERT_RETURN(ret == -1 && errno == EINTR);
-+
-+ unpriv = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(unpriv);
-+
-+ ret = kdbus_msg_send(unpriv, "com.example.c", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ ret = kdbus_msg_recv_poll(owner, 100, NULL, NULL);
-+ ASSERT_EXIT(ret >= 0);
-+
-+ /* free policy holder */
-+ kdbus_conn_free(conn);
-+
-+ ret = kdbus_msg_send(unpriv, "com.example.c", 0xdeadbeef, 0, 0,
-+ 0, 0);
-+ ASSERT_EXIT(ret == -EPERM);
-+
-+ kdbus_conn_free(unpriv);
-+ }), ({
-+ /* make sure policy holder is only valid in child */
-+ kdbus_conn_free(conn);
-+ kill(pid, SIGUSR1);
-+ }));
-+ ASSERT_RETURN(ret >= 0);
-+
-+
-+ /*
-+ * The following tests are necessary.
-+ */
-+
-+ ret = test_broadcast_after_policy_upload(env);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(owner);
-+
-+ /*
-+ * cleanup resources
-+ */
-+
-+ kdbus_conn_free(conn_b);
-+ kdbus_conn_free(conn_a);
-+
-+ return TEST_OK;
-+}
-+
-+int kdbus_test_policy_priv(struct kdbus_test_env *env)
-+{
-+ pid_t pid;
-+ int ret;
-+
-+ /* make sure to exit() if a child returns from fork() */
-+ pid = getpid();
-+ ret = test_policy_priv(env);
-+ if (pid != getpid())
-+ exit(1);
-+
-+ return ret;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-policy.c b/tools/testing/selftests/kdbus/test-policy.c
-new file mode 100644
-index 0000000..96d20d5
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-policy.c
-@@ -0,0 +1,80 @@
-+#include <errno.h>
-+#include <stdio.h>
-+#include <string.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stdint.h>
-+#include <stdbool.h>
-+#include <unistd.h>
-+
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+int kdbus_test_policy(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn_a, *conn_b;
-+ struct kdbus_policy_access access;
-+ int ret;
-+
-+ /* Invalid name */
-+ conn_a = kdbus_hello_registrar(env->buspath, ".example.a",
-+ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(conn_a == NULL);
-+
-+ conn_a = kdbus_hello_registrar(env->buspath, "example",
-+ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(conn_a == NULL);
-+
-+ conn_a = kdbus_hello_registrar(env->buspath, "com.example.a",
-+ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(conn_a);
-+
-+ conn_b = kdbus_hello_registrar(env->buspath, "com.example.b",
-+ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
-+ ASSERT_RETURN(conn_b);
-+
-+ /*
-+ * Verify there cannot be any duplicate entries, except for specific vs.
-+ * wildcard entries.
-+ */
-+
-+ access = (struct kdbus_policy_access){
-+ .type = KDBUS_POLICY_ACCESS_USER,
-+ .id = geteuid(),
-+ .access = KDBUS_POLICY_SEE,
-+ };
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_conn_update_policy(conn_b, "com.example.a", &access, 1);
-+ ASSERT_RETURN(ret == -EEXIST);
-+
-+ ret = kdbus_conn_update_policy(conn_b, "com.example.a.*", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.a.*", &access, 1);
-+ ASSERT_RETURN(ret == -EEXIST);
-+
-+ ret = kdbus_conn_update_policy(conn_a, "com.example.*", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_conn_update_policy(conn_b, "com.example.a", &access, 1);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_conn_update_policy(conn_b, "com.example.*", &access, 1);
-+ ASSERT_RETURN(ret == -EEXIST);
-+
-+ /* Invalid name */
-+ ret = kdbus_conn_update_policy(conn_b, ".example.*", &access, 1);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ ret = kdbus_conn_update_policy(conn_b, "example", &access, 1);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ kdbus_conn_free(conn_b);
-+ kdbus_conn_free(conn_a);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-sync.c b/tools/testing/selftests/kdbus/test-sync.c
-new file mode 100644
-index 0000000..0655a54
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-sync.c
-@@ -0,0 +1,369 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <pthread.h>
-+#include <stdbool.h>
-+#include <signal.h>
-+#include <sys/wait.h>
-+#include <sys/eventfd.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+static struct kdbus_conn *conn_a, *conn_b;
-+static unsigned int cookie = 0xdeadbeef;
-+
-+static void nop_handler(int sig) {}
-+
-+static int interrupt_sync(struct kdbus_conn *conn_src,
-+ struct kdbus_conn *conn_dst)
-+{
-+ pid_t pid;
-+ int ret, status;
-+ struct kdbus_msg *msg = NULL;
-+ struct sigaction sa = {
-+ .sa_handler = nop_handler,
-+ .sa_flags = SA_NOCLDSTOP|SA_RESTART,
-+ };
-+
-+ cookie++;
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, pid);
-+
-+ if (pid == 0) {
-+ ret = sigaction(SIGINT, &sa, NULL);
-+ ASSERT_EXIT(ret == 0);
-+
-+ ret = kdbus_msg_send_sync(conn_dst, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 100000000ULL, 0, conn_src->id, -1);
-+ ASSERT_EXIT(ret == -ETIMEDOUT);
-+
-+ _exit(EXIT_SUCCESS);
-+ }
-+
-+ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
-+ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ ret = kill(pid, SIGINT);
-+ ASSERT_RETURN_VAL(ret == 0, ret);
-+
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ if (WIFSIGNALED(status))
-+ return TEST_ERR;
-+
-+ ret = kdbus_msg_recv_poll(conn_src, 100, NULL, NULL);
-+ ASSERT_RETURN(ret == -ETIMEDOUT);
-+
-+ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
-+}
-+
-+static int close_epipe_sync(const char *bus)
-+{
-+ pid_t pid;
-+ int ret, status;
-+ struct kdbus_conn *conn_src;
-+ struct kdbus_conn *conn_dst;
-+ struct kdbus_msg *msg = NULL;
-+
-+ conn_src = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_RETURN(conn_src);
-+
-+ ret = kdbus_add_match_empty(conn_src);
-+ ASSERT_RETURN(ret == 0);
-+
-+ conn_dst = kdbus_hello(bus, 0, NULL, 0);
-+ ASSERT_RETURN(conn_dst);
-+
-+ cookie++;
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, pid);
-+
-+ if (pid == 0) {
-+ uint64_t dst_id;
-+
-+ /* close our reference */
-+ dst_id = conn_dst->id;
-+ kdbus_conn_free(conn_dst);
-+
-+ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
-+ ASSERT_EXIT(ret == 0 && msg->cookie == cookie);
-+ ASSERT_EXIT(msg->src_id == dst_id);
-+
-+ cookie++;
-+ ret = kdbus_msg_send_sync(conn_src, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 100000000ULL, 0, dst_id, -1);
-+ ASSERT_EXIT(ret == -EPIPE);
-+
-+ _exit(EXIT_SUCCESS);
-+ }
-+
-+ ret = kdbus_msg_send(conn_dst, NULL, cookie, 0, 0, 0,
-+ KDBUS_DST_ID_BROADCAST);
-+ ASSERT_RETURN(ret == 0);
-+
-+ cookie++;
-+ ret = kdbus_msg_recv_poll(conn_dst, 100, &msg, NULL);
-+ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ /* destroy connection */
-+ kdbus_conn_free(conn_dst);
-+ kdbus_conn_free(conn_src);
-+
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ if (!WIFEXITED(status))
-+ return TEST_ERR;
-+
-+ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
-+}
-+
-+static int cancel_fd_sync(struct kdbus_conn *conn_src,
-+ struct kdbus_conn *conn_dst)
-+{
-+ pid_t pid;
-+ int cancel_fd;
-+ int ret, status;
-+ uint64_t counter = 1;
-+ struct kdbus_msg *msg = NULL;
-+
-+ cancel_fd = eventfd(0, 0);
-+ ASSERT_RETURN_VAL(cancel_fd >= 0, cancel_fd);
-+
-+ cookie++;
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, pid);
-+
-+ if (pid == 0) {
-+ ret = kdbus_msg_send_sync(conn_dst, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 100000000ULL, 0, conn_src->id,
-+ cancel_fd);
-+ ASSERT_EXIT(ret == -ECANCELED);
-+
-+ _exit(EXIT_SUCCESS);
-+ }
-+
-+ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
-+ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
-+
-+ kdbus_msg_free(msg);
-+
-+ ret = write(cancel_fd, &counter, sizeof(counter));
-+ ASSERT_RETURN(ret == sizeof(counter));
-+
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ if (WIFSIGNALED(status))
-+ return TEST_ERR;
-+
-+ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
-+}
-+
-+static int no_cancel_sync(struct kdbus_conn *conn_src,
-+ struct kdbus_conn *conn_dst)
-+{
-+ pid_t pid;
-+ int cancel_fd;
-+ int ret, status;
-+ struct kdbus_msg *msg = NULL;
-+
-+ /* pass eventfd, but never signal it so it shouldn't have any effect */
-+
-+ cancel_fd = eventfd(0, 0);
-+ ASSERT_RETURN_VAL(cancel_fd >= 0, cancel_fd);
-+
-+ cookie++;
-+ pid = fork();
-+ ASSERT_RETURN_VAL(pid >= 0, pid);
-+
-+ if (pid == 0) {
-+ ret = kdbus_msg_send_sync(conn_dst, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 100000000ULL, 0, conn_src->id,
-+ cancel_fd);
-+ ASSERT_EXIT(ret == 0);
-+
-+ _exit(EXIT_SUCCESS);
-+ }
-+
-+ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
-+ ASSERT_RETURN_VAL(ret == 0 && msg->cookie == cookie, -1);
-+
-+ kdbus_msg_free(msg);
-+
-+ ret = kdbus_msg_send_reply(conn_src, cookie, conn_dst->id);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ ret = waitpid(pid, &status, 0);
-+ ASSERT_RETURN_VAL(ret >= 0, ret);
-+
-+ if (WIFSIGNALED(status))
-+ return -1;
-+
-+ return (status == EXIT_SUCCESS) ? 0 : -1;
-+}
-+
-+static void *run_thread_reply(void *data)
-+{
-+ int ret;
-+ unsigned long status = TEST_OK;
-+
-+ ret = kdbus_msg_recv_poll(conn_a, 3000, NULL, NULL);
-+ if (ret < 0)
-+ goto exit_thread;
-+
-+ kdbus_printf("Thread received message, sending reply ...\n");
-+
-+ /* using an unknown cookie must fail */
-+ ret = kdbus_msg_send_reply(conn_a, ~cookie, conn_b->id);
-+ if (ret != -EBADSLT) {
-+ status = TEST_ERR;
-+ goto exit_thread;
-+ }
-+
-+ ret = kdbus_msg_send_reply(conn_a, cookie, conn_b->id);
-+ if (ret != 0) {
-+ status = TEST_ERR;
-+ goto exit_thread;
-+ }
-+
-+exit_thread:
-+ pthread_exit(NULL);
-+ return (void *) status;
-+}
-+
-+int kdbus_test_sync_reply(struct kdbus_test_env *env)
-+{
-+ unsigned long status;
-+ pthread_t thread;
-+ int ret;
-+
-+ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_a && conn_b);
-+
-+ pthread_create(&thread, NULL, run_thread_reply, NULL);
-+
-+ ret = kdbus_msg_send_sync(conn_b, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 5000000000ULL, 0, conn_a->id, -1);
-+
-+ pthread_join(thread, (void *) &status);
-+ ASSERT_RETURN(status == 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = interrupt_sync(conn_a, conn_b);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = close_epipe_sync(env->buspath);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = cancel_fd_sync(conn_a, conn_b);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = no_cancel_sync(conn_a, conn_b);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_printf("-- closing bus connections\n");
-+
-+ kdbus_conn_free(conn_a);
-+ kdbus_conn_free(conn_b);
-+
-+ return TEST_OK;
-+}
-+
-+#define BYEBYE_ME ((void*)0L)
-+#define BYEBYE_THEM ((void*)1L)
-+
-+static void *run_thread_byebye(void *data)
-+{
-+ struct kdbus_cmd cmd_byebye = { .size = sizeof(cmd_byebye) };
-+ int ret;
-+
-+ ret = kdbus_msg_recv_poll(conn_a, 3000, NULL, NULL);
-+ if (ret == 0) {
-+ kdbus_printf("Thread received message, invoking BYEBYE ...\n");
-+ kdbus_msg_recv(conn_a, NULL, NULL);
-+ if (data == BYEBYE_ME)
-+ kdbus_cmd_byebye(conn_b->fd, &cmd_byebye);
-+ else if (data == BYEBYE_THEM)
-+ kdbus_cmd_byebye(conn_a->fd, &cmd_byebye);
-+ }
-+
-+ pthread_exit(NULL);
-+ return NULL;
-+}
-+
-+int kdbus_test_sync_byebye(struct kdbus_test_env *env)
-+{
-+ pthread_t thread;
-+ int ret;
-+
-+ /*
-+ * This sends a synchronous message to a thread, which waits until it
-+ * received the message and then invokes BYEBYE on the *ORIGINAL*
-+ * connection. That is, on the same connection that synchronously waits
-+ * for an reply.
-+ * This should properly wake the connection up and cause ECONNRESET as
-+ * the connection is disconnected now.
-+ *
-+ * The second time, we do the same but invoke BYEBYE on the *TARGET*
-+ * connection. This should also wake up the synchronous sender as the
-+ * reply cannot be sent by a disconnected target.
-+ */
-+
-+ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_a && conn_b);
-+
-+ pthread_create(&thread, NULL, run_thread_byebye, BYEBYE_ME);
-+
-+ ret = kdbus_msg_send_sync(conn_b, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 5000000000ULL, 0, conn_a->id, -1);
-+
-+ ASSERT_RETURN(ret == -ECONNRESET);
-+
-+ pthread_join(thread, NULL);
-+
-+ kdbus_conn_free(conn_a);
-+ kdbus_conn_free(conn_b);
-+
-+ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_a && conn_b);
-+
-+ pthread_create(&thread, NULL, run_thread_byebye, BYEBYE_THEM);
-+
-+ ret = kdbus_msg_send_sync(conn_b, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ 5000000000ULL, 0, conn_a->id, -1);
-+
-+ ASSERT_RETURN(ret == -EPIPE);
-+
-+ pthread_join(thread, NULL);
-+
-+ kdbus_conn_free(conn_a);
-+ kdbus_conn_free(conn_b);
-+
-+ return TEST_OK;
-+}
-diff --git a/tools/testing/selftests/kdbus/test-timeout.c b/tools/testing/selftests/kdbus/test-timeout.c
-new file mode 100644
-index 0000000..cfd1930
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-timeout.c
-@@ -0,0 +1,99 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <time.h>
-+#include <fcntl.h>
-+#include <stdlib.h>
-+#include <stddef.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <poll.h>
-+#include <stdbool.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+int timeout_msg_recv(struct kdbus_conn *conn, uint64_t *expected)
-+{
-+ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
-+ struct kdbus_msg *msg;
-+ int ret;
-+
-+ ret = kdbus_cmd_recv(conn->fd, &recv);
-+ if (ret < 0) {
-+ kdbus_printf("error receiving message: %d (%m)\n", ret);
-+ return ret;
-+ }
-+
-+ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
-+
-+ ASSERT_RETURN_VAL(msg->payload_type == KDBUS_PAYLOAD_KERNEL, -EINVAL);
-+ ASSERT_RETURN_VAL(msg->src_id == KDBUS_SRC_ID_KERNEL, -EINVAL);
-+ ASSERT_RETURN_VAL(msg->dst_id == conn->id, -EINVAL);
-+
-+ *expected &= ~(1ULL << msg->cookie_reply);
-+ kdbus_printf("Got message timeout for cookie %llu\n",
-+ msg->cookie_reply);
-+
-+ ret = kdbus_free(conn, recv.msg.offset);
-+ if (ret < 0)
-+ return ret;
-+
-+ return 0;
-+}
-+
-+int kdbus_test_timeout(struct kdbus_test_env *env)
-+{
-+ struct kdbus_conn *conn_a, *conn_b;
-+ struct pollfd fd;
-+ int ret, i, n_msgs = 4;
-+ uint64_t expected = 0;
-+ uint64_t cookie = 0xdeadbeef;
-+
-+ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
-+ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
-+ ASSERT_RETURN(conn_a && conn_b);
-+
-+ fd.fd = conn_b->fd;
-+
-+ /*
-+ * send messages that expect a reply (within 100 msec),
-+ * but never answer it.
-+ */
-+ for (i = 0; i < n_msgs; i++, cookie++) {
-+ kdbus_printf("Sending message with cookie %llu ...\n",
-+ (unsigned long long)cookie);
-+ ASSERT_RETURN(kdbus_msg_send(conn_b, NULL, cookie,
-+ KDBUS_MSG_EXPECT_REPLY,
-+ (i + 1) * 100ULL * 1000000ULL, 0,
-+ conn_a->id) == 0);
-+ expected |= 1ULL << cookie;
-+ }
-+
-+ for (;;) {
-+ fd.events = POLLIN | POLLPRI | POLLHUP;
-+ fd.revents = 0;
-+
-+ ret = poll(&fd, 1, (n_msgs + 1) * 100);
-+ if (ret == 0)
-+ kdbus_printf("--- timeout\n");
-+ if (ret <= 0)
-+ break;
-+
-+ if (fd.revents & POLLIN)
-+ ASSERT_RETURN(!timeout_msg_recv(conn_b, &expected));
-+
-+ if (expected == 0)
-+ break;
-+ }
-+
-+ ASSERT_RETURN(expected == 0);
-+
-+ kdbus_conn_free(conn_a);
-+ kdbus_conn_free(conn_b);
-+
-+ return TEST_OK;
-+}
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-10-27 13:19 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-10-27 13:19 UTC (permalink / raw
To: gentoo-commits
commit: 149745ed61e0ffc43e55b6682710f9553c3ceb45
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Oct 27 13:19:39 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Oct 27 13:19:39 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=149745ed
Linux patch 4.1.12
0000_README | 4 +
1011_linux-4.1.12.patch | 1494 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1498 insertions(+)
diff --git a/0000_README b/0000_README
index 18e95dd..8ed7605 100644
--- a/0000_README
+++ b/0000_README
@@ -87,6 +87,10 @@ Patch: 1010_linux-4.1.11.patch
From: http://www.kernel.org
Desc: Linux 4.1.11
+Patch: 1011_linux-4.1.12.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.12
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1011_linux-4.1.12.patch b/1011_linux-4.1.12.patch
new file mode 100644
index 0000000..07910df
--- /dev/null
+++ b/1011_linux-4.1.12.patch
@@ -0,0 +1,1494 @@
+diff --git a/Makefile b/Makefile
+index c7d877b1c248..2320f1911404 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 11
++SUBLEVEL = 12
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
+index 81151663ef38..3258174e6152 100644
+--- a/arch/arm64/Makefile
++++ b/arch/arm64/Makefile
+@@ -31,7 +31,7 @@ endif
+ CHECKFLAGS += -D__aarch64__
+
+ ifeq ($(CONFIG_ARM64_ERRATUM_843419), y)
+-CFLAGS_MODULE += -mcmodel=large
++KBUILD_CFLAGS_MODULE += -mcmodel=large
+ endif
+
+ # Default value
+diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
+index 56283f8a675c..cf7319422768 100644
+--- a/arch/arm64/include/asm/pgtable.h
++++ b/arch/arm64/include/asm/pgtable.h
+@@ -80,7 +80,7 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
+ #define PAGE_S2 __pgprot(PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_NORMAL) | PTE_S2_RDONLY)
+ #define PAGE_S2_DEVICE __pgprot(PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_DEVICE_nGnRE) | PTE_S2_RDONLY | PTE_UXN)
+
+-#define PAGE_NONE __pgprot(((_PAGE_DEFAULT) & ~PTE_TYPE_MASK) | PTE_PROT_NONE | PTE_PXN | PTE_UXN)
++#define PAGE_NONE __pgprot(((_PAGE_DEFAULT) & ~PTE_VALID) | PTE_PROT_NONE | PTE_PXN | PTE_UXN)
+ #define PAGE_SHARED __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN | PTE_WRITE)
+ #define PAGE_SHARED_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_WRITE)
+ #define PAGE_COPY __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN)
+@@ -460,7 +460,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long addr)
+ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+ {
+ const pteval_t mask = PTE_USER | PTE_PXN | PTE_UXN | PTE_RDONLY |
+- PTE_PROT_NONE | PTE_WRITE | PTE_TYPE_MASK;
++ PTE_PROT_NONE | PTE_VALID | PTE_WRITE;
+ pte_val(pte) = (pte_val(pte) & ~mask) | (pgprot_val(newprot) & mask);
+ return pte;
+ }
+diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
+index df81caab7383..f1e0e5522e3a 100644
+--- a/arch/powerpc/kvm/book3s_hv.c
++++ b/arch/powerpc/kvm/book3s_hv.c
+@@ -2178,7 +2178,7 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
+ vc->runner = vcpu;
+ if (n_ceded == vc->n_runnable) {
+ kvmppc_vcore_blocked(vc);
+- } else if (should_resched()) {
++ } else if (need_resched()) {
+ vc->vcore_state = VCORE_PREEMPT;
+ /* Let something else run */
+ cond_resched_lock(&vc->lock);
+diff --git a/arch/sparc/crypto/aes_glue.c b/arch/sparc/crypto/aes_glue.c
+index 2e48eb8813ff..c90930de76ba 100644
+--- a/arch/sparc/crypto/aes_glue.c
++++ b/arch/sparc/crypto/aes_glue.c
+@@ -433,6 +433,7 @@ static struct crypto_alg algs[] = { {
+ .blkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
++ .ivsize = AES_BLOCK_SIZE,
+ .setkey = aes_set_key,
+ .encrypt = cbc_encrypt,
+ .decrypt = cbc_decrypt,
+@@ -452,6 +453,7 @@ static struct crypto_alg algs[] = { {
+ .blkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
++ .ivsize = AES_BLOCK_SIZE,
+ .setkey = aes_set_key,
+ .encrypt = ctr_crypt,
+ .decrypt = ctr_crypt,
+diff --git a/arch/sparc/crypto/camellia_glue.c b/arch/sparc/crypto/camellia_glue.c
+index 6bf2479a12fb..561a84d93cf6 100644
+--- a/arch/sparc/crypto/camellia_glue.c
++++ b/arch/sparc/crypto/camellia_glue.c
+@@ -274,6 +274,7 @@ static struct crypto_alg algs[] = { {
+ .blkcipher = {
+ .min_keysize = CAMELLIA_MIN_KEY_SIZE,
+ .max_keysize = CAMELLIA_MAX_KEY_SIZE,
++ .ivsize = CAMELLIA_BLOCK_SIZE,
+ .setkey = camellia_set_key,
+ .encrypt = cbc_encrypt,
+ .decrypt = cbc_decrypt,
+diff --git a/arch/sparc/crypto/des_glue.c b/arch/sparc/crypto/des_glue.c
+index dd6a34fa6e19..61af794aa2d3 100644
+--- a/arch/sparc/crypto/des_glue.c
++++ b/arch/sparc/crypto/des_glue.c
+@@ -429,6 +429,7 @@ static struct crypto_alg algs[] = { {
+ .blkcipher = {
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
++ .ivsize = DES_BLOCK_SIZE,
+ .setkey = des_set_key,
+ .encrypt = cbc_encrypt,
+ .decrypt = cbc_decrypt,
+@@ -485,6 +486,7 @@ static struct crypto_alg algs[] = { {
+ .blkcipher = {
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
++ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .setkey = des3_ede_set_key,
+ .encrypt = cbc3_encrypt,
+ .decrypt = cbc3_decrypt,
+diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h
+index 8f3271842533..67b6cd00a44f 100644
+--- a/arch/x86/include/asm/preempt.h
++++ b/arch/x86/include/asm/preempt.h
+@@ -90,9 +90,9 @@ static __always_inline bool __preempt_count_dec_and_test(void)
+ /*
+ * Returns true when we need to resched and can (barring IRQ state).
+ */
+-static __always_inline bool should_resched(void)
++static __always_inline bool should_resched(int preempt_offset)
+ {
+- return unlikely(!raw_cpu_read_4(__preempt_count));
++ return unlikely(raw_cpu_read_4(__preempt_count) == preempt_offset);
+ }
+
+ #ifdef CONFIG_PREEMPT
+diff --git a/crypto/ahash.c b/crypto/ahash.c
+index 8acb886032ae..9c1dc8d6106a 100644
+--- a/crypto/ahash.c
++++ b/crypto/ahash.c
+@@ -544,7 +544,8 @@ static int ahash_prepare_alg(struct ahash_alg *alg)
+ struct crypto_alg *base = &alg->halg.base;
+
+ if (alg->halg.digestsize > PAGE_SIZE / 8 ||
+- alg->halg.statesize > PAGE_SIZE / 8)
++ alg->halg.statesize > PAGE_SIZE / 8 ||
++ alg->halg.statesize == 0)
+ return -EINVAL;
+
+ base->cra_type = &crypto_ahash_type;
+diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
+index 010ce0b1f517..fe8f1e4b4c7c 100644
+--- a/drivers/block/rbd.c
++++ b/drivers/block/rbd.c
+@@ -5174,7 +5174,6 @@ static int rbd_dev_probe_parent(struct rbd_device *rbd_dev)
+ out_err:
+ if (parent) {
+ rbd_dev_unparent(rbd_dev);
+- kfree(rbd_dev->header_name);
+ rbd_dev_destroy(parent);
+ } else {
+ rbd_put_client(rbdc);
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 7f467fdc9107..2a2eb96caeda 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -2766,12 +2766,13 @@ static int drm_dp_mst_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs
+ if (msgs[num - 1].flags & I2C_M_RD)
+ reading = true;
+
+- if (!reading) {
++ if (!reading || (num - 1 > DP_REMOTE_I2C_READ_MAX_TRANSACTIONS)) {
+ DRM_DEBUG_KMS("Unsupported I2C transaction for MST device\n");
+ ret = -EIO;
+ goto out;
+ }
+
++ memset(&msg, 0, sizeof(msg));
+ msg.req_type = DP_REMOTE_I2C_READ;
+ msg.u.i2c_read.num_transactions = num - 1;
+ msg.u.i2c_read.port_number = port->port_num;
+diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
+index eb7e61078a5b..92586b0af3ab 100644
+--- a/drivers/gpu/drm/drm_sysfs.c
++++ b/drivers/gpu/drm/drm_sysfs.c
+@@ -235,18 +235,12 @@ static ssize_t dpms_show(struct device *device,
+ char *buf)
+ {
+ struct drm_connector *connector = to_drm_connector(device);
+- struct drm_device *dev = connector->dev;
+- uint64_t dpms_status;
+- int ret;
++ int dpms;
+
+- ret = drm_object_property_get_value(&connector->base,
+- dev->mode_config.dpms_property,
+- &dpms_status);
+- if (ret)
+- return 0;
++ dpms = READ_ONCE(connector->dpms);
+
+ return snprintf(buf, PAGE_SIZE, "%s\n",
+- drm_get_dpms_name((int)dpms_status));
++ drm_get_dpms_name(dpms));
+ }
+
+ static ssize_t enabled_show(struct device *device,
+diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+index 6751553abe4a..567791b27d6d 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+@@ -178,8 +178,30 @@ nouveau_fbcon_sync(struct fb_info *info)
+ return 0;
+ }
+
++static int
++nouveau_fbcon_open(struct fb_info *info, int user)
++{
++ struct nouveau_fbdev *fbcon = info->par;
++ struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
++ int ret = pm_runtime_get_sync(drm->dev->dev);
++ if (ret < 0 && ret != -EACCES)
++ return ret;
++ return 0;
++}
++
++static int
++nouveau_fbcon_release(struct fb_info *info, int user)
++{
++ struct nouveau_fbdev *fbcon = info->par;
++ struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
++ pm_runtime_put(drm->dev->dev);
++ return 0;
++}
++
+ static struct fb_ops nouveau_fbcon_ops = {
+ .owner = THIS_MODULE,
++ .fb_open = nouveau_fbcon_open,
++ .fb_release = nouveau_fbcon_release,
+ .fb_check_var = drm_fb_helper_check_var,
+ .fb_set_par = drm_fb_helper_set_par,
+ .fb_fillrect = nouveau_fbcon_fillrect,
+@@ -195,6 +217,8 @@ static struct fb_ops nouveau_fbcon_ops = {
+
+ static struct fb_ops nouveau_fbcon_sw_ops = {
+ .owner = THIS_MODULE,
++ .fb_open = nouveau_fbcon_open,
++ .fb_release = nouveau_fbcon_release,
+ .fb_check_var = drm_fb_helper_check_var,
+ .fb_set_par = drm_fb_helper_set_par,
+ .fb_fillrect = cfb_fillrect,
+diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
+index d2e9e9efc159..6743174acdbc 100644
+--- a/drivers/gpu/drm/radeon/radeon_display.c
++++ b/drivers/gpu/drm/radeon/radeon_display.c
+@@ -1633,18 +1633,8 @@ int radeon_modeset_init(struct radeon_device *rdev)
+ radeon_fbdev_init(rdev);
+ drm_kms_helper_poll_init(rdev->ddev);
+
+- if (rdev->pm.dpm_enabled) {
+- /* do dpm late init */
+- ret = radeon_pm_late_init(rdev);
+- if (ret) {
+- rdev->pm.dpm_enabled = false;
+- DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
+- }
+- /* set the dpm state for PX since there won't be
+- * a modeset to call this.
+- */
+- radeon_pm_compute_clocks(rdev);
+- }
++ /* do pm late init */
++ ret = radeon_pm_late_init(rdev);
+
+ return 0;
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c
+index 257b10be5cda..42986130cc63 100644
+--- a/drivers/gpu/drm/radeon/radeon_dp_mst.c
++++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c
+@@ -283,6 +283,7 @@ static struct drm_connector *radeon_dp_add_mst_connector(struct drm_dp_mst_topol
+ radeon_connector->mst_encoder = radeon_dp_create_fake_mst_encoder(master);
+
+ drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
++ drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0);
+ drm_mode_connector_set_path_property(connector, pathprop);
+ drm_reinit_primary_mode_group(dev);
+
+diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
+index c1ba83a8dd8c..948c33105801 100644
+--- a/drivers/gpu/drm/radeon/radeon_pm.c
++++ b/drivers/gpu/drm/radeon/radeon_pm.c
+@@ -1331,14 +1331,6 @@ static int radeon_pm_init_old(struct radeon_device *rdev)
+ INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
+
+ if (rdev->pm.num_power_states > 1) {
+- /* where's the best place to put these? */
+- ret = device_create_file(rdev->dev, &dev_attr_power_profile);
+- if (ret)
+- DRM_ERROR("failed to create device file for power profile\n");
+- ret = device_create_file(rdev->dev, &dev_attr_power_method);
+- if (ret)
+- DRM_ERROR("failed to create device file for power method\n");
+-
+ if (radeon_debugfs_pm_init(rdev)) {
+ DRM_ERROR("Failed to register debugfs file for PM!\n");
+ }
+@@ -1396,20 +1388,6 @@ static int radeon_pm_init_dpm(struct radeon_device *rdev)
+ goto dpm_failed;
+ rdev->pm.dpm_enabled = true;
+
+- ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
+- if (ret)
+- DRM_ERROR("failed to create device file for dpm state\n");
+- ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
+- if (ret)
+- DRM_ERROR("failed to create device file for dpm state\n");
+- /* XXX: these are noops for dpm but are here for backwards compat */
+- ret = device_create_file(rdev->dev, &dev_attr_power_profile);
+- if (ret)
+- DRM_ERROR("failed to create device file for power profile\n");
+- ret = device_create_file(rdev->dev, &dev_attr_power_method);
+- if (ret)
+- DRM_ERROR("failed to create device file for power method\n");
+-
+ if (radeon_debugfs_pm_init(rdev)) {
+ DRM_ERROR("Failed to register debugfs file for dpm!\n");
+ }
+@@ -1550,9 +1528,44 @@ int radeon_pm_late_init(struct radeon_device *rdev)
+ int ret = 0;
+
+ if (rdev->pm.pm_method == PM_METHOD_DPM) {
+- mutex_lock(&rdev->pm.mutex);
+- ret = radeon_dpm_late_enable(rdev);
+- mutex_unlock(&rdev->pm.mutex);
++ if (rdev->pm.dpm_enabled) {
++ ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
++ if (ret)
++ DRM_ERROR("failed to create device file for dpm state\n");
++ ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
++ if (ret)
++ DRM_ERROR("failed to create device file for dpm state\n");
++ /* XXX: these are noops for dpm but are here for backwards compat */
++ ret = device_create_file(rdev->dev, &dev_attr_power_profile);
++ if (ret)
++ DRM_ERROR("failed to create device file for power profile\n");
++ ret = device_create_file(rdev->dev, &dev_attr_power_method);
++ if (ret)
++ DRM_ERROR("failed to create device file for power method\n");
++
++ mutex_lock(&rdev->pm.mutex);
++ ret = radeon_dpm_late_enable(rdev);
++ mutex_unlock(&rdev->pm.mutex);
++ if (ret) {
++ rdev->pm.dpm_enabled = false;
++ DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
++ } else {
++ /* set the dpm state for PX since there won't be
++ * a modeset to call this.
++ */
++ radeon_pm_compute_clocks(rdev);
++ }
++ }
++ } else {
++ if (rdev->pm.num_power_states > 1) {
++ /* where's the best place to put these? */
++ ret = device_create_file(rdev->dev, &dev_attr_power_profile);
++ if (ret)
++ DRM_ERROR("failed to create device file for power profile\n");
++ ret = device_create_file(rdev->dev, &dev_attr_power_method);
++ if (ret)
++ DRM_ERROR("failed to create device file for power method\n");
++ }
+ }
+ return ret;
+ }
+diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
+index 0a80e4aabaed..3f7d4876937e 100644
+--- a/drivers/i2c/busses/i2c-designware-platdrv.c
++++ b/drivers/i2c/busses/i2c-designware-platdrv.c
+@@ -24,6 +24,7 @@
+ #include <linux/kernel.h>
+ #include <linux/module.h>
+ #include <linux/delay.h>
++#include <linux/dmi.h>
+ #include <linux/i2c.h>
+ #include <linux/clk.h>
+ #include <linux/clk-provider.h>
+@@ -51,6 +52,22 @@ static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)
+ }
+
+ #ifdef CONFIG_ACPI
++/*
++ * The HCNT/LCNT information coming from ACPI should be the most accurate
++ * for given platform. However, some systems get it wrong. On such systems
++ * we get better results by calculating those based on the input clock.
++ */
++static const struct dmi_system_id dw_i2c_no_acpi_params[] = {
++ {
++ .ident = "Dell Inspiron 7348",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
++ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7348"),
++ },
++ },
++ { }
++};
++
+ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
+ u16 *hcnt, u16 *lcnt, u32 *sda_hold)
+ {
+@@ -58,6 +75,9 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
+ acpi_handle handle = ACPI_HANDLE(&pdev->dev);
+ union acpi_object *obj;
+
++ if (dmi_check_system(dw_i2c_no_acpi_params))
++ return;
++
+ if (ACPI_FAILURE(acpi_evaluate_object(handle, method, NULL, &buf)))
+ return;
+
+@@ -253,12 +273,6 @@ static int dw_i2c_probe(struct platform_device *pdev)
+ adap->dev.parent = &pdev->dev;
+ adap->dev.of_node = pdev->dev.of_node;
+
+- r = i2c_add_numbered_adapter(adap);
+- if (r) {
+- dev_err(&pdev->dev, "failure adding adapter\n");
+- return r;
+- }
+-
+ if (dev->pm_runtime_disabled) {
+ pm_runtime_forbid(&pdev->dev);
+ } else {
+@@ -268,6 +282,13 @@ static int dw_i2c_probe(struct platform_device *pdev)
+ pm_runtime_enable(&pdev->dev);
+ }
+
++ r = i2c_add_numbered_adapter(adap);
++ if (r) {
++ dev_err(&pdev->dev, "failure adding adapter\n");
++ pm_runtime_disable(&pdev->dev);
++ return r;
++ }
++
+ return 0;
+ }
+
+diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
+index 5a84bea5b845..d9d022cdfff0 100644
+--- a/drivers/i2c/busses/i2c-rcar.c
++++ b/drivers/i2c/busses/i2c-rcar.c
+@@ -688,15 +688,16 @@ static int rcar_i2c_probe(struct platform_device *pdev)
+ return ret;
+ }
+
++ pm_runtime_enable(dev);
++ platform_set_drvdata(pdev, priv);
++
+ ret = i2c_add_numbered_adapter(adap);
+ if (ret < 0) {
+ dev_err(dev, "reg adap failed: %d\n", ret);
++ pm_runtime_disable(dev);
+ return ret;
+ }
+
+- pm_runtime_enable(dev);
+- platform_set_drvdata(pdev, priv);
+-
+ dev_info(dev, "probed\n");
+
+ return 0;
+diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
+index 297e9c9ac943..424794271703 100644
+--- a/drivers/i2c/busses/i2c-s3c2410.c
++++ b/drivers/i2c/busses/i2c-s3c2410.c
+@@ -1243,17 +1243,19 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
+ i2c->adap.nr = i2c->pdata->bus_num;
+ i2c->adap.dev.of_node = pdev->dev.of_node;
+
++ platform_set_drvdata(pdev, i2c);
++
++ pm_runtime_enable(&pdev->dev);
++
+ ret = i2c_add_numbered_adapter(&i2c->adap);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to add bus to i2c core\n");
++ pm_runtime_disable(&pdev->dev);
+ s3c24xx_i2c_deregister_cpufreq(i2c);
+ clk_unprepare(i2c->clk);
+ return ret;
+ }
+
+- platform_set_drvdata(pdev, i2c);
+-
+- pm_runtime_enable(&pdev->dev);
+ pm_runtime_enable(&i2c->adap.dev);
+
+ dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev));
+diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
+index e22e6c892b8a..7073b22d4cb4 100644
+--- a/drivers/md/dm-thin.c
++++ b/drivers/md/dm-thin.c
+@@ -2959,7 +2959,7 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv)
+ metadata_low_callback,
+ pool);
+ if (r)
+- goto out_free_pt;
++ goto out_flags_changed;
+
+ pt->callbacks.congested_fn = pool_is_congested;
+ dm_table_add_target_callbacks(ti->table, &pt->callbacks);
+diff --git a/drivers/mfd/max77843.c b/drivers/mfd/max77843.c
+index a354ac677ec7..1074a0d68680 100644
+--- a/drivers/mfd/max77843.c
++++ b/drivers/mfd/max77843.c
+@@ -79,7 +79,7 @@ static int max77843_chg_init(struct max77843 *max77843)
+ if (!max77843->i2c_chg) {
+ dev_err(&max77843->i2c->dev,
+ "Cannot allocate I2C device for Charger\n");
+- return PTR_ERR(max77843->i2c_chg);
++ return -ENODEV;
+ }
+ i2c_set_clientdata(max77843->i2c_chg, max77843);
+
+diff --git a/drivers/net/ethernet/ibm/emac/core.h b/drivers/net/ethernet/ibm/emac/core.h
+index 28df37420da9..ac02c675c59c 100644
+--- a/drivers/net/ethernet/ibm/emac/core.h
++++ b/drivers/net/ethernet/ibm/emac/core.h
+@@ -460,8 +460,8 @@ struct emac_ethtool_regs_subhdr {
+ u32 index;
+ };
+
+-#define EMAC_ETHTOOL_REGS_VER 0
+-#define EMAC4_ETHTOOL_REGS_VER 1
+-#define EMAC4SYNC_ETHTOOL_REGS_VER 2
++#define EMAC_ETHTOOL_REGS_VER 3
++#define EMAC4_ETHTOOL_REGS_VER 4
++#define EMAC4SYNC_ETHTOOL_REGS_VER 5
+
+ #endif /* __IBM_NEWEMAC_CORE_H */
+diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
+index b62a5e3a1c65..db2c3cdf2c40 100644
+--- a/drivers/net/ppp/pppoe.c
++++ b/drivers/net/ppp/pppoe.c
+@@ -313,7 +313,6 @@ static void pppoe_flush_dev(struct net_device *dev)
+ if (po->pppoe_dev == dev &&
+ sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND | PPPOX_ZOMBIE)) {
+ pppox_unbind_sock(sk);
+- sk->sk_state = PPPOX_ZOMBIE;
+ sk->sk_state_change(sk);
+ po->pppoe_dev = NULL;
+ dev_put(dev);
+diff --git a/drivers/pinctrl/freescale/pinctrl-imx25.c b/drivers/pinctrl/freescale/pinctrl-imx25.c
+index faf635654312..293ed4381cc0 100644
+--- a/drivers/pinctrl/freescale/pinctrl-imx25.c
++++ b/drivers/pinctrl/freescale/pinctrl-imx25.c
+@@ -26,7 +26,8 @@
+ #include "pinctrl-imx.h"
+
+ enum imx25_pads {
+- MX25_PAD_RESERVE0 = 1,
++ MX25_PAD_RESERVE0 = 0,
++ MX25_PAD_RESERVE1 = 1,
+ MX25_PAD_A10 = 2,
+ MX25_PAD_A13 = 3,
+ MX25_PAD_A14 = 4,
+@@ -169,6 +170,7 @@ enum imx25_pads {
+ /* Pad names for the pinmux subsystem */
+ static const struct pinctrl_pin_desc imx25_pinctrl_pads[] = {
+ IMX_PINCTRL_PIN(MX25_PAD_RESERVE0),
++ IMX_PINCTRL_PIN(MX25_PAD_RESERVE1),
+ IMX_PINCTRL_PIN(MX25_PAD_A10),
+ IMX_PINCTRL_PIN(MX25_PAD_A13),
+ IMX_PINCTRL_PIN(MX25_PAD_A14),
+diff --git a/drivers/xen/preempt.c b/drivers/xen/preempt.c
+index a1800c150839..08cb419eb4e6 100644
+--- a/drivers/xen/preempt.c
++++ b/drivers/xen/preempt.c
+@@ -31,7 +31,7 @@ EXPORT_SYMBOL_GPL(xen_in_preemptible_hcall);
+ asmlinkage __visible void xen_maybe_preempt_hcall(void)
+ {
+ if (unlikely(__this_cpu_read(xen_in_preemptible_hcall)
+- && should_resched())) {
++ && need_resched())) {
+ /*
+ * Clear flag as we may be rescheduled on a different
+ * cpu.
+diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
+index 614aaa1969bd..723470850b94 100644
+--- a/fs/btrfs/backref.c
++++ b/fs/btrfs/backref.c
+@@ -1786,7 +1786,6 @@ static int iterate_inode_extrefs(u64 inum, struct btrfs_root *fs_root,
+ int found = 0;
+ struct extent_buffer *eb;
+ struct btrfs_inode_extref *extref;
+- struct extent_buffer *leaf;
+ u32 item_size;
+ u32 cur_offset;
+ unsigned long ptr;
+@@ -1814,9 +1813,8 @@ static int iterate_inode_extrefs(u64 inum, struct btrfs_root *fs_root,
+ btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
+ btrfs_release_path(path);
+
+- leaf = path->nodes[0];
+- item_size = btrfs_item_size_nr(leaf, slot);
+- ptr = btrfs_item_ptr_offset(leaf, slot);
++ item_size = btrfs_item_size_nr(eb, slot);
++ ptr = btrfs_item_ptr_offset(eb, slot);
+ cur_offset = 0;
+
+ while (cur_offset < item_size) {
+@@ -1830,7 +1828,7 @@ static int iterate_inode_extrefs(u64 inum, struct btrfs_root *fs_root,
+ if (ret)
+ break;
+
+- cur_offset += btrfs_inode_extref_name_len(leaf, extref);
++ cur_offset += btrfs_inode_extref_name_len(eb, extref);
+ cur_offset += sizeof(*extref);
+ }
+ btrfs_tree_read_unlock_blocking(eb);
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index 37d456a9a3b8..af3dd3c55ef1 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -4492,6 +4492,11 @@ locked:
+ bctl->flags |= BTRFS_BALANCE_TYPE_MASK;
+ }
+
++ if (bctl->flags & ~(BTRFS_BALANCE_ARGS_MASK | BTRFS_BALANCE_TYPE_MASK)) {
++ ret = -EINVAL;
++ goto out_bargs;
++ }
++
+ do_balance:
+ /*
+ * Ownership of bctl and mutually_exclusive_operation_running
+diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
+index ebc31331a837..e1cc5b45069a 100644
+--- a/fs/btrfs/volumes.h
++++ b/fs/btrfs/volumes.h
+@@ -372,6 +372,14 @@ struct map_lookup {
+ #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4)
+ #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5)
+
++#define BTRFS_BALANCE_ARGS_MASK \
++ (BTRFS_BALANCE_ARGS_PROFILES | \
++ BTRFS_BALANCE_ARGS_USAGE | \
++ BTRFS_BALANCE_ARGS_DEVID | \
++ BTRFS_BALANCE_ARGS_DRANGE | \
++ BTRFS_BALANCE_ARGS_VRANGE | \
++ BTRFS_BALANCE_ARGS_LIMIT)
++
+ /*
+ * Profile changing flags. When SOFT is set we won't relocate chunk if
+ * it already has the target profile (even though it may be
+diff --git a/fs/locks.c b/fs/locks.c
+index 653faabb07f4..d3d558ba4da7 100644
+--- a/fs/locks.c
++++ b/fs/locks.c
+@@ -862,12 +862,11 @@ static int posix_locks_deadlock(struct file_lock *caller_fl,
+ * whether or not a lock was successfully freed by testing the return
+ * value for -ENOENT.
+ */
+-static int flock_lock_file(struct file *filp, struct file_lock *request)
++static int flock_lock_inode(struct inode *inode, struct file_lock *request)
+ {
+ struct file_lock *new_fl = NULL;
+ struct file_lock *fl;
+ struct file_lock_context *ctx;
+- struct inode *inode = file_inode(filp);
+ int error = 0;
+ bool found = false;
+ LIST_HEAD(dispose);
+@@ -890,7 +889,7 @@ static int flock_lock_file(struct file *filp, struct file_lock *request)
+ goto find_conflict;
+
+ list_for_each_entry(fl, &ctx->flc_flock, fl_list) {
+- if (filp != fl->fl_file)
++ if (request->fl_file != fl->fl_file)
+ continue;
+ if (request->fl_type == fl->fl_type)
+ goto out;
+@@ -1164,20 +1163,19 @@ int posix_lock_file(struct file *filp, struct file_lock *fl,
+ EXPORT_SYMBOL(posix_lock_file);
+
+ /**
+- * posix_lock_file_wait - Apply a POSIX-style lock to a file
+- * @filp: The file to apply the lock to
++ * posix_lock_inode_wait - Apply a POSIX-style lock to a file
++ * @inode: inode of file to which lock request should be applied
+ * @fl: The lock to be applied
+ *
+- * Add a POSIX style lock to a file.
+- * We merge adjacent & overlapping locks whenever possible.
+- * POSIX locks are sorted by owner task, then by starting address
++ * Variant of posix_lock_file_wait that does not take a filp, and so can be
++ * used after the filp has already been torn down.
+ */
+-int posix_lock_file_wait(struct file *filp, struct file_lock *fl)
++int posix_lock_inode_wait(struct inode *inode, struct file_lock *fl)
+ {
+ int error;
+ might_sleep ();
+ for (;;) {
+- error = posix_lock_file(filp, fl, NULL);
++ error = __posix_lock_file(inode, fl, NULL);
+ if (error != FILE_LOCK_DEFERRED)
+ break;
+ error = wait_event_interruptible(fl->fl_wait, !fl->fl_next);
+@@ -1189,7 +1187,7 @@ int posix_lock_file_wait(struct file *filp, struct file_lock *fl)
+ }
+ return error;
+ }
+-EXPORT_SYMBOL(posix_lock_file_wait);
++EXPORT_SYMBOL(posix_lock_inode_wait);
+
+ /**
+ * locks_mandatory_locked - Check for an active lock
+@@ -1851,18 +1849,18 @@ int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
+ }
+
+ /**
+- * flock_lock_file_wait - Apply a FLOCK-style lock to a file
+- * @filp: The file to apply the lock to
++ * flock_lock_inode_wait - Apply a FLOCK-style lock to a file
++ * @inode: inode of the file to apply to
+ * @fl: The lock to be applied
+ *
+- * Add a FLOCK style lock to a file.
++ * Apply a FLOCK style lock request to an inode.
+ */
+-int flock_lock_file_wait(struct file *filp, struct file_lock *fl)
++int flock_lock_inode_wait(struct inode *inode, struct file_lock *fl)
+ {
+ int error;
+ might_sleep();
+ for (;;) {
+- error = flock_lock_file(filp, fl);
++ error = flock_lock_inode(inode, fl);
+ if (error != FILE_LOCK_DEFERRED)
+ break;
+ error = wait_event_interruptible(fl->fl_wait, !fl->fl_next);
+@@ -1874,8 +1872,7 @@ int flock_lock_file_wait(struct file *filp, struct file_lock *fl)
+ }
+ return error;
+ }
+-
+-EXPORT_SYMBOL(flock_lock_file_wait);
++EXPORT_SYMBOL(flock_lock_inode_wait);
+
+ /**
+ * sys_flock: - flock() system call.
+@@ -2401,7 +2398,8 @@ locks_remove_flock(struct file *filp)
+ .fl_type = F_UNLCK,
+ .fl_end = OFFSET_MAX,
+ };
+- struct file_lock_context *flctx = file_inode(filp)->i_flctx;
++ struct inode *inode = file_inode(filp);
++ struct file_lock_context *flctx = inode->i_flctx;
+
+ if (list_empty(&flctx->flc_flock))
+ return;
+@@ -2409,7 +2407,7 @@ locks_remove_flock(struct file *filp)
+ if (filp->f_op->flock)
+ filp->f_op->flock(filp, F_SETLKW, &fl);
+ else
+- flock_lock_file(filp, &fl);
++ flock_lock_inode(inode, &fl);
+
+ if (fl.fl_ops && fl.fl_ops->fl_release_private)
+ fl.fl_ops->fl_release_private(&fl);
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index c245874d7e9d..8f393fcc313b 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -5367,15 +5367,15 @@ static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *
+ return err;
+ }
+
+-static int do_vfs_lock(struct file *file, struct file_lock *fl)
++static int do_vfs_lock(struct inode *inode, struct file_lock *fl)
+ {
+ int res = 0;
+ switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
+ case FL_POSIX:
+- res = posix_lock_file_wait(file, fl);
++ res = posix_lock_inode_wait(inode, fl);
+ break;
+ case FL_FLOCK:
+- res = flock_lock_file_wait(file, fl);
++ res = flock_lock_inode_wait(inode, fl);
+ break;
+ default:
+ BUG();
+@@ -5435,7 +5435,7 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
+ switch (task->tk_status) {
+ case 0:
+ renew_lease(calldata->server, calldata->timestamp);
+- do_vfs_lock(calldata->fl.fl_file, &calldata->fl);
++ do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl);
+ if (nfs4_update_lock_stateid(calldata->lsp,
+ &calldata->res.stateid))
+ break;
+@@ -5543,7 +5543,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
+ mutex_lock(&sp->so_delegreturn_mutex);
+ /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
+ down_read(&nfsi->rwsem);
+- if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
++ if (do_vfs_lock(inode, request) == -ENOENT) {
+ up_read(&nfsi->rwsem);
+ mutex_unlock(&sp->so_delegreturn_mutex);
+ goto out;
+@@ -5684,7 +5684,7 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
+ data->timestamp);
+ if (data->arg.new_lock) {
+ data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS);
+- if (do_vfs_lock(data->fl.fl_file, &data->fl) < 0) {
++ if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) {
+ rpc_restart_call_prepare(task);
+ break;
+ }
+@@ -5926,7 +5926,7 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock
+ if (status != 0)
+ goto out;
+ request->fl_flags |= FL_ACCESS;
+- status = do_vfs_lock(request->fl_file, request);
++ status = do_vfs_lock(state->inode, request);
+ if (status < 0)
+ goto out;
+ down_read(&nfsi->rwsem);
+@@ -5934,7 +5934,7 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock
+ /* Yes: cache locks! */
+ /* ...but avoid races with delegation recall... */
+ request->fl_flags = fl_flags & ~FL_SLEEP;
+- status = do_vfs_lock(request->fl_file, request);
++ status = do_vfs_lock(state->inode, request);
+ up_read(&nfsi->rwsem);
+ goto out;
+ }
+diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c
+index cdefaa331a07..c29d9421bd5e 100644
+--- a/fs/nfsd/blocklayout.c
++++ b/fs/nfsd/blocklayout.c
+@@ -56,14 +56,6 @@ nfsd4_block_proc_layoutget(struct inode *inode, const struct svc_fh *fhp,
+ u32 device_generation = 0;
+ int error;
+
+- /*
+- * We do not attempt to support I/O smaller than the fs block size,
+- * or not aligned to it.
+- */
+- if (args->lg_minlength < block_size) {
+- dprintk("pnfsd: I/O too small\n");
+- goto out_layoutunavailable;
+- }
+ if (seg->offset & (block_size - 1)) {
+ dprintk("pnfsd: I/O misaligned\n");
+ goto out_layoutunavailable;
+diff --git a/include/asm-generic/preempt.h b/include/asm-generic/preempt.h
+index eb6f9e6c3075..b6a53e8e526a 100644
+--- a/include/asm-generic/preempt.h
++++ b/include/asm-generic/preempt.h
+@@ -71,9 +71,10 @@ static __always_inline bool __preempt_count_dec_and_test(void)
+ /*
+ * Returns true when we need to resched and can (barring IRQ state).
+ */
+-static __always_inline bool should_resched(void)
++static __always_inline bool should_resched(int preempt_offset)
+ {
+- return unlikely(!preempt_count() && tif_need_resched());
++ return unlikely(preempt_count() == preempt_offset &&
++ tif_need_resched());
+ }
+
+ #ifdef CONFIG_PREEMPT
+diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
+index 86d0b25ed054..a89f505c856b 100644
+--- a/include/drm/drm_dp_mst_helper.h
++++ b/include/drm/drm_dp_mst_helper.h
+@@ -253,6 +253,7 @@ struct drm_dp_remote_dpcd_write {
+ u8 *bytes;
+ };
+
++#define DP_REMOTE_I2C_READ_MAX_TRANSACTIONS 4
+ struct drm_dp_remote_i2c_read {
+ u8 num_transactions;
+ u8 port_number;
+@@ -262,7 +263,7 @@ struct drm_dp_remote_i2c_read {
+ u8 *bytes;
+ u8 no_stop_bit;
+ u8 i2c_transaction_delay;
+- } transactions[4];
++ } transactions[DP_REMOTE_I2C_READ_MAX_TRANSACTIONS];
+ u8 read_i2c_device_id;
+ u8 num_bytes_read;
+ };
+diff --git a/include/linux/fs.h b/include/linux/fs.h
+index f93192333b37..fdc369fa69e8 100644
+--- a/include/linux/fs.h
++++ b/include/linux/fs.h
+@@ -1036,12 +1036,12 @@ extern void locks_remove_file(struct file *);
+ extern void locks_release_private(struct file_lock *);
+ extern void posix_test_lock(struct file *, struct file_lock *);
+ extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
+-extern int posix_lock_file_wait(struct file *, struct file_lock *);
++extern int posix_lock_inode_wait(struct inode *, struct file_lock *);
+ extern int posix_unblock_lock(struct file_lock *);
+ extern int vfs_test_lock(struct file *, struct file_lock *);
+ extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
+ extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
+-extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);
++extern int flock_lock_inode_wait(struct inode *inode, struct file_lock *fl);
+ extern int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
+ extern void lease_get_mtime(struct inode *, struct timespec *time);
+ extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
+@@ -1127,7 +1127,8 @@ static inline int posix_lock_file(struct file *filp, struct file_lock *fl,
+ return -ENOLCK;
+ }
+
+-static inline int posix_lock_file_wait(struct file *filp, struct file_lock *fl)
++static inline int posix_lock_inode_wait(struct inode *inode,
++ struct file_lock *fl)
+ {
+ return -ENOLCK;
+ }
+@@ -1153,8 +1154,8 @@ static inline int vfs_cancel_lock(struct file *filp, struct file_lock *fl)
+ return 0;
+ }
+
+-static inline int flock_lock_file_wait(struct file *filp,
+- struct file_lock *request)
++static inline int flock_lock_inode_wait(struct inode *inode,
++ struct file_lock *request)
+ {
+ return -ENOLCK;
+ }
+@@ -1192,6 +1193,20 @@ static inline void show_fd_locks(struct seq_file *f,
+ struct file *filp, struct files_struct *files) {}
+ #endif /* !CONFIG_FILE_LOCKING */
+
++static inline struct inode *file_inode(const struct file *f)
++{
++ return f->f_inode;
++}
++
++static inline int posix_lock_file_wait(struct file *filp, struct file_lock *fl)
++{
++ return posix_lock_inode_wait(file_inode(filp), fl);
++}
++
++static inline int flock_lock_file_wait(struct file *filp, struct file_lock *fl)
++{
++ return flock_lock_inode_wait(file_inode(filp), fl);
++}
+
+ struct fasync_struct {
+ spinlock_t fa_lock;
+@@ -1991,11 +2006,6 @@ extern void ihold(struct inode * inode);
+ extern void iput(struct inode *);
+ extern int generic_update_time(struct inode *, struct timespec *, int);
+
+-static inline struct inode *file_inode(const struct file *f)
+-{
+- return f->f_inode;
+-}
+-
+ /* /sys/fs */
+ extern struct kobject *fs_kobj;
+
+diff --git a/include/linux/preempt.h b/include/linux/preempt.h
+index de83b4eb1642..8cd6725c5758 100644
+--- a/include/linux/preempt.h
++++ b/include/linux/preempt.h
+@@ -20,7 +20,8 @@
+ #if defined(CONFIG_DEBUG_PREEMPT) || defined(CONFIG_PREEMPT_TRACER)
+ extern void preempt_count_add(int val);
+ extern void preempt_count_sub(int val);
+-#define preempt_count_dec_and_test() ({ preempt_count_sub(1); should_resched(); })
++#define preempt_count_dec_and_test() \
++ ({ preempt_count_sub(1); should_resched(0); })
+ #else
+ #define preempt_count_add(val) __preempt_count_add(val)
+ #define preempt_count_sub(val) __preempt_count_sub(val)
+@@ -59,7 +60,7 @@ do { \
+
+ #define preempt_check_resched() \
+ do { \
+- if (should_resched()) \
++ if (should_resched(0)) \
+ __preempt_schedule(); \
+ } while (0)
+
+diff --git a/include/linux/preempt_mask.h b/include/linux/preempt_mask.h
+index dbeec4d4a3be..5cb25f17331a 100644
+--- a/include/linux/preempt_mask.h
++++ b/include/linux/preempt_mask.h
+@@ -71,13 +71,21 @@
+ */
+ #define in_nmi() (preempt_count() & NMI_MASK)
+
++/*
++ * The preempt_count offset after preempt_disable();
++ */
+ #if defined(CONFIG_PREEMPT_COUNT)
+-# define PREEMPT_CHECK_OFFSET 1
++# define PREEMPT_DISABLE_OFFSET PREEMPT_OFFSET
+ #else
+-# define PREEMPT_CHECK_OFFSET 0
++# define PREEMPT_DISABLE_OFFSET 0
+ #endif
+
+ /*
++ * The preempt_count offset after spin_lock()
++ */
++#define PREEMPT_LOCK_OFFSET PREEMPT_DISABLE_OFFSET
++
++/*
+ * The preempt_count offset needed for things like:
+ *
+ * spin_lock_bh()
+@@ -90,7 +98,7 @@
+ *
+ * Work as expected.
+ */
+-#define SOFTIRQ_LOCK_OFFSET (SOFTIRQ_DISABLE_OFFSET + PREEMPT_CHECK_OFFSET)
++#define SOFTIRQ_LOCK_OFFSET (SOFTIRQ_DISABLE_OFFSET + PREEMPT_LOCK_OFFSET)
+
+ /*
+ * Are we running in atomic context? WARNING: this macro cannot
+@@ -106,7 +114,7 @@
+ * (used by the scheduler, *after* releasing the kernel lock)
+ */
+ #define in_atomic_preempt_off() \
+- ((preempt_count() & ~PREEMPT_ACTIVE) != PREEMPT_CHECK_OFFSET)
++ ((preempt_count() & ~PREEMPT_ACTIVE) != PREEMPT_DISABLE_OFFSET)
+
+ #ifdef CONFIG_PREEMPT_COUNT
+ # define preemptible() (preempt_count() == 0 && !irqs_disabled())
+diff --git a/include/linux/sched.h b/include/linux/sched.h
+index 26a2e6122734..61f4f2d5c882 100644
+--- a/include/linux/sched.h
++++ b/include/linux/sched.h
+@@ -2834,12 +2834,6 @@ extern int _cond_resched(void);
+
+ extern int __cond_resched_lock(spinlock_t *lock);
+
+-#ifdef CONFIG_PREEMPT_COUNT
+-#define PREEMPT_LOCK_OFFSET PREEMPT_OFFSET
+-#else
+-#define PREEMPT_LOCK_OFFSET 0
+-#endif
+-
+ #define cond_resched_lock(lock) ({ \
+ ___might_sleep(__FILE__, __LINE__, PREEMPT_LOCK_OFFSET);\
+ __cond_resched_lock(lock); \
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index eb1c55b8255a..4307e20a4a4a 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -2588,6 +2588,9 @@ static inline void skb_postpull_rcsum(struct sk_buff *skb,
+ {
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->csum = csum_sub(skb->csum, csum_partial(start, len, 0));
++ else if (skb->ip_summed == CHECKSUM_PARTIAL &&
++ skb_checksum_start_offset(skb) < 0)
++ skb->ip_summed = CHECKSUM_NONE;
+ }
+
+ unsigned char *skb_pull_rcsum(struct sk_buff *skb, unsigned int len);
+diff --git a/include/net/af_unix.h b/include/net/af_unix.h
+index a175ba4a7adb..dfe4ddfbb43c 100644
+--- a/include/net/af_unix.h
++++ b/include/net/af_unix.h
+@@ -64,7 +64,11 @@ struct unix_sock {
+ #define UNIX_GC_MAYBE_CYCLE 1
+ struct socket_wq peer_wq;
+ };
+-#define unix_sk(__sk) ((struct unix_sock *)__sk)
++
++static inline struct unix_sock *unix_sk(struct sock *sk)
++{
++ return (struct unix_sock *)sk;
++}
+
+ #define peer_wait peer_wq.wait
+
+diff --git a/include/net/sock.h b/include/net/sock.h
+index 3a4898ec8c67..ed01a012f8d5 100644
+--- a/include/net/sock.h
++++ b/include/net/sock.h
+@@ -826,6 +826,14 @@ static inline __must_check int sk_add_backlog(struct sock *sk, struct sk_buff *s
+ if (sk_rcvqueues_full(sk, limit))
+ return -ENOBUFS;
+
++ /*
++ * If the skb was allocated from pfmemalloc reserves, only
++ * allow SOCK_MEMALLOC sockets to use it as this socket is
++ * helping free memory
++ */
++ if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC))
++ return -ENOMEM;
++
+ __sk_add_backlog(sk, skb);
+ sk->sk_backlog.len += skb->truesize;
+ return 0;
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 8476206a1e19..4d870eb6086b 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -4232,7 +4232,7 @@ SYSCALL_DEFINE0(sched_yield)
+
+ int __sched _cond_resched(void)
+ {
+- if (should_resched()) {
++ if (should_resched(0)) {
+ preempt_schedule_common();
+ return 1;
+ }
+@@ -4250,7 +4250,7 @@ EXPORT_SYMBOL(_cond_resched);
+ */
+ int __cond_resched_lock(spinlock_t *lock)
+ {
+- int resched = should_resched();
++ int resched = should_resched(PREEMPT_LOCK_OFFSET);
+ int ret = 0;
+
+ lockdep_assert_held(lock);
+@@ -4272,7 +4272,7 @@ int __sched __cond_resched_softirq(void)
+ {
+ BUG_ON(!in_softirq());
+
+- if (should_resched()) {
++ if (should_resched(SOFTIRQ_DISABLE_OFFSET)) {
+ local_bh_enable();
+ preempt_schedule_common();
+ local_bh_disable();
+diff --git a/kernel/workqueue.c b/kernel/workqueue.c
+index 586ad91300b0..5c01664c26e2 100644
+--- a/kernel/workqueue.c
++++ b/kernel/workqueue.c
+@@ -1451,13 +1451,13 @@ static void __queue_delayed_work(int cpu, struct workqueue_struct *wq,
+ timer_stats_timer_set_start_info(&dwork->timer);
+
+ dwork->wq = wq;
++ /* timer isn't guaranteed to run in this cpu, record earlier */
++ if (cpu == WORK_CPU_UNBOUND)
++ cpu = raw_smp_processor_id();
+ dwork->cpu = cpu;
+ timer->expires = jiffies + delay;
+
+- if (unlikely(cpu != WORK_CPU_UNBOUND))
+- add_timer_on(timer, cpu);
+- else
+- add_timer(timer);
++ add_timer_on(timer, cpu);
+ }
+
+ /**
+diff --git a/mm/memcontrol.c b/mm/memcontrol.c
+index a04225d372ba..68dea90334cb 100644
+--- a/mm/memcontrol.c
++++ b/mm/memcontrol.c
+@@ -3677,6 +3677,7 @@ static int __mem_cgroup_usage_register_event(struct mem_cgroup *memcg,
+ ret = page_counter_memparse(args, "-1", &threshold);
+ if (ret)
+ return ret;
++ threshold <<= PAGE_SHIFT;
+
+ mutex_lock(&memcg->thresholds_lock);
+
+diff --git a/net/core/ethtool.c b/net/core/ethtool.c
+index 1d00b8922902..4a6824767f3d 100644
+--- a/net/core/ethtool.c
++++ b/net/core/ethtool.c
+@@ -1273,7 +1273,7 @@ static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
+
+ gstrings.len = ret;
+
+- data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
++ data = kcalloc(gstrings.len, ETH_GSTRING_LEN, GFP_USER);
+ if (!data)
+ return -ENOMEM;
+
+diff --git a/net/core/filter.c b/net/core/filter.c
+index bf831a85c315..0fa2613b5e35 100644
+--- a/net/core/filter.c
++++ b/net/core/filter.c
+@@ -1526,9 +1526,13 @@ int sk_get_filter(struct sock *sk, struct sock_filter __user *ubuf,
+ goto out;
+
+ /* We're copying the filter that has been originally attached,
+- * so no conversion/decode needed anymore.
++ * so no conversion/decode needed anymore. eBPF programs that
++ * have no original program cannot be dumped through this.
+ */
++ ret = -EACCES;
+ fprog = filter->prog->orig_prog;
++ if (!fprog)
++ goto out;
+
+ ret = fprog->len;
+ if (!len)
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index a2e4e47b2839..075d2e78c87e 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -2976,11 +2976,12 @@ EXPORT_SYMBOL(skb_append_datato_frags);
+ */
+ unsigned char *skb_pull_rcsum(struct sk_buff *skb, unsigned int len)
+ {
++ unsigned char *data = skb->data;
++
+ BUG_ON(len > skb->len);
+- skb->len -= len;
+- BUG_ON(skb->len < skb->data_len);
+- skb_postpull_rcsum(skb, skb->data, len);
+- return skb->data += len;
++ __skb_pull(skb, len);
++ skb_postpull_rcsum(skb, data, len);
++ return skb->data;
+ }
+ EXPORT_SYMBOL_GPL(skb_pull_rcsum);
+
+diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
+index e664706b350c..4d2bc8c6694f 100644
+--- a/net/ipv4/inet_connection_sock.c
++++ b/net/ipv4/inet_connection_sock.c
+@@ -568,21 +568,22 @@ EXPORT_SYMBOL(inet_rtx_syn_ack);
+ static bool reqsk_queue_unlink(struct request_sock_queue *queue,
+ struct request_sock *req)
+ {
+- struct listen_sock *lopt = queue->listen_opt;
+ struct request_sock **prev;
++ struct listen_sock *lopt;
+ bool found = false;
+
+ spin_lock(&queue->syn_wait_lock);
+-
+- for (prev = &lopt->syn_table[req->rsk_hash]; *prev != NULL;
+- prev = &(*prev)->dl_next) {
+- if (*prev == req) {
+- *prev = req->dl_next;
+- found = true;
+- break;
++ lopt = queue->listen_opt;
++ if (lopt) {
++ for (prev = &lopt->syn_table[req->rsk_hash]; *prev != NULL;
++ prev = &(*prev)->dl_next) {
++ if (*prev == req) {
++ *prev = req->dl_next;
++ found = true;
++ break;
++ }
+ }
+ }
+-
+ spin_unlock(&queue->syn_wait_lock);
+ if (timer_pending(&req->rsk_timer) && del_timer_sync(&req->rsk_timer))
+ reqsk_put(req);
+@@ -676,20 +677,20 @@ void reqsk_queue_hash_req(struct request_sock_queue *queue,
+ req->num_timeout = 0;
+ req->sk = NULL;
+
++ setup_timer(&req->rsk_timer, reqsk_timer_handler, (unsigned long)req);
++ mod_timer_pinned(&req->rsk_timer, jiffies + timeout);
++ req->rsk_hash = hash;
++
+ /* before letting lookups find us, make sure all req fields
+ * are committed to memory and refcnt initialized.
+ */
+ smp_wmb();
+ atomic_set(&req->rsk_refcnt, 2);
+- setup_timer(&req->rsk_timer, reqsk_timer_handler, (unsigned long)req);
+- req->rsk_hash = hash;
+
+ spin_lock(&queue->syn_wait_lock);
+ req->dl_next = lopt->syn_table[hash];
+ lopt->syn_table[hash] = req;
+ spin_unlock(&queue->syn_wait_lock);
+-
+- mod_timer_pinned(&req->rsk_timer, jiffies + timeout);
+ }
+ EXPORT_SYMBOL(reqsk_queue_hash_req);
+
+diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
+index a29a504492af..e3db498f0233 100644
+--- a/net/l2tp/l2tp_core.c
++++ b/net/l2tp/l2tp_core.c
+@@ -1319,7 +1319,7 @@ static void l2tp_tunnel_del_work(struct work_struct *work)
+ tunnel = container_of(work, struct l2tp_tunnel, del_work);
+ sk = l2tp_tunnel_sock_lookup(tunnel);
+ if (!sk)
+- return;
++ goto out;
+
+ sock = sk->sk_socket;
+
+@@ -1340,6 +1340,8 @@ static void l2tp_tunnel_del_work(struct work_struct *work)
+ }
+
+ l2tp_tunnel_sock_put(sk);
++out:
++ l2tp_tunnel_dec_refcount(tunnel);
+ }
+
+ /* Create a socket for the tunnel, if one isn't set up by
+@@ -1639,8 +1641,13 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_create);
+ */
+ int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel)
+ {
++ l2tp_tunnel_inc_refcount(tunnel);
+ l2tp_tunnel_closeall(tunnel);
+- return (false == queue_work(l2tp_wq, &tunnel->del_work));
++ if (false == queue_work(l2tp_wq, &tunnel->del_work)) {
++ l2tp_tunnel_dec_refcount(tunnel);
++ return 1;
++ }
++ return 0;
+ }
+ EXPORT_SYMBOL_GPL(l2tp_tunnel_delete);
+
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index 980121e75d2e..d139c43ac6e5 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -2683,6 +2683,7 @@ static int netlink_dump(struct sock *sk)
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ int len, err = -ENOBUFS;
++ int alloc_min_size;
+ int alloc_size;
+
+ mutex_lock(nlk->cb_mutex);
+@@ -2691,9 +2692,6 @@ static int netlink_dump(struct sock *sk)
+ goto errout_skb;
+ }
+
+- cb = &nlk->cb;
+- alloc_size = max_t(int, cb->min_dump_alloc, NLMSG_GOODSIZE);
+-
+ if (!netlink_rx_is_mmaped(sk) &&
+ atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
+ goto errout_skb;
+@@ -2703,23 +2701,35 @@ static int netlink_dump(struct sock *sk)
+ * to reduce number of system calls on dump operations, if user
+ * ever provided a big enough buffer.
+ */
+- if (alloc_size < nlk->max_recvmsg_len) {
+- skb = netlink_alloc_skb(sk,
+- nlk->max_recvmsg_len,
+- nlk->portid,
++ cb = &nlk->cb;
++ alloc_min_size = max_t(int, cb->min_dump_alloc, NLMSG_GOODSIZE);
++
++ if (alloc_min_size < nlk->max_recvmsg_len) {
++ alloc_size = nlk->max_recvmsg_len;
++ skb = netlink_alloc_skb(sk, alloc_size, nlk->portid,
+ GFP_KERNEL |
+ __GFP_NOWARN |
+ __GFP_NORETRY);
+- /* available room should be exact amount to avoid MSG_TRUNC */
+- if (skb)
+- skb_reserve(skb, skb_tailroom(skb) -
+- nlk->max_recvmsg_len);
+ }
+- if (!skb)
++ if (!skb) {
++ alloc_size = alloc_min_size;
+ skb = netlink_alloc_skb(sk, alloc_size, nlk->portid,
+ GFP_KERNEL);
++ }
+ if (!skb)
+ goto errout_skb;
++
++ /* Trim skb to allocated size. User is expected to provide buffer as
++ * large as max(min_dump_alloc, 16KiB (mac_recvmsg_len capped at
++ * netlink_recvmsg())). dump will pack as many smaller messages as
++ * could fit within the allocated skb. skb is typically allocated
++ * with larger space than required (could be as much as near 2x the
++ * requested size with align to next power of 2 approach). Allowing
++ * dump to use the excess space makes it difficult for a user to have a
++ * reasonable static buffer based on the expected largest dump of a
++ * single netdev. The outcome is MSG_TRUNC error.
++ */
++ skb_reserve(skb, skb_tailroom(skb) - alloc_size);
+ netlink_skb_set_owner_r(skb, sk);
+
+ len = cb->dump(skb, cb);
+diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
+index aa349514e4cb..eed562295c78 100644
+--- a/net/openvswitch/flow_table.c
++++ b/net/openvswitch/flow_table.c
+@@ -92,7 +92,8 @@ struct sw_flow *ovs_flow_alloc(void)
+
+ /* Initialize the default stat node. */
+ stats = kmem_cache_alloc_node(flow_stats_cache,
+- GFP_KERNEL | __GFP_ZERO, 0);
++ GFP_KERNEL | __GFP_ZERO,
++ node_online(0) ? 0 : NUMA_NO_NODE);
+ if (!stats)
+ goto err;
+
+diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
+index 3f63ceac8e01..844dd85426dc 100644
+--- a/net/sched/act_mirred.c
++++ b/net/sched/act_mirred.c
+@@ -166,6 +166,7 @@ static int tcf_mirred(struct sk_buff *skb, const struct tc_action *a,
+
+ skb2->skb_iif = skb->dev->ifindex;
+ skb2->dev = dev;
++ skb_sender_cpu_clear(skb2);
+ err = dev_queue_xmit(skb2);
+
+ out:
+diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+index f9f13a32ddb8..2873b8d65608 100644
+--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
++++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+@@ -146,7 +146,8 @@ int rdma_read_chunk_lcl(struct svcxprt_rdma *xprt,
+ ctxt->read_hdr = head;
+ pages_needed =
+ min_t(int, pages_needed, rdma_read_max_sge(xprt, pages_needed));
+- read = min_t(int, pages_needed << PAGE_SHIFT, rs_length);
++ read = min_t(int, (pages_needed << PAGE_SHIFT) - *page_offset,
++ rs_length);
+
+ for (pno = 0; pno < pages_needed; pno++) {
+ int len = min_t(int, rs_length, PAGE_SIZE - pg_off);
+@@ -245,7 +246,8 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
+ ctxt->direction = DMA_FROM_DEVICE;
+ ctxt->frmr = frmr;
+ pages_needed = min_t(int, pages_needed, xprt->sc_frmr_pg_list_len);
+- read = min_t(int, pages_needed << PAGE_SHIFT, rs_length);
++ read = min_t(int, (pages_needed << PAGE_SHIFT) - *page_offset,
++ rs_length);
+
+ frmr->kva = page_address(rqstp->rq_arg.pages[pg_no]);
+ frmr->direction = DMA_FROM_DEVICE;
+diff --git a/net/tipc/msg.h b/net/tipc/msg.h
+index e1d3595e2ee9..4cbb0fbad046 100644
+--- a/net/tipc/msg.h
++++ b/net/tipc/msg.h
+@@ -353,7 +353,7 @@ static inline void msg_set_seqno(struct tipc_msg *m, u32 n)
+ static inline u32 msg_importance(struct tipc_msg *m)
+ {
+ if (unlikely(msg_user(m) == MSG_FRAGMENTER))
+- return msg_bits(m, 5, 13, 0x7);
++ return msg_bits(m, 9, 0, 0x7);
+ if (likely(msg_isdata(m) && !msg_errcode(m)))
+ return msg_user(m);
+ return TIPC_SYSTEM_IMPORTANCE;
+@@ -362,7 +362,7 @@ static inline u32 msg_importance(struct tipc_msg *m)
+ static inline void msg_set_importance(struct tipc_msg *m, u32 i)
+ {
+ if (unlikely(msg_user(m) == MSG_FRAGMENTER))
+- msg_set_bits(m, 5, 13, 0x7, i);
++ msg_set_bits(m, 9, 0, 0x7, i);
+ else if (likely(i < TIPC_SYSTEM_IMPORTANCE))
+ msg_set_user(m, i);
+ else
+diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
+index 06430598cf51..76e66695621c 100644
+--- a/net/unix/af_unix.c
++++ b/net/unix/af_unix.c
+@@ -1938,6 +1938,11 @@ static int unix_stream_recvmsg(struct socket *sock, struct msghdr *msg,
+ goto out;
+ }
+
++ if (flags & MSG_PEEK)
++ skip = sk_peek_offset(sk, flags);
++ else
++ skip = 0;
++
+ do {
+ int chunk;
+ struct sk_buff *skb, *last;
+@@ -1984,7 +1989,6 @@ again:
+ break;
+ }
+
+- skip = sk_peek_offset(sk, flags);
+ while (skip >= unix_skb_len(skb)) {
+ skip -= unix_skb_len(skb);
+ last = skb;
+@@ -2048,6 +2052,16 @@ again:
+
+ sk_peek_offset_fwd(sk, chunk);
+
++ if (UNIXCB(skb).fp)
++ break;
++
++ skip = 0;
++ last = skb;
++ unix_state_lock(sk);
++ skb = skb_peek_next(skb, &sk->sk_receive_queue);
++ if (skb)
++ goto again;
++ unix_state_unlock(sk);
+ break;
+ }
+ } while (size);
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-10-26 20:51 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-10-26 20:51 UTC (permalink / raw
To: gentoo-commits
commit: 19c36945db482f1174588877bf34ec85a8b039af
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Oct 26 20:51:30 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Oct 26 20:51:30 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=19c36945
Remove redundant patchsets.
0000_README | 8 ---
1600_dm-crypt-limit-max-segment-size.patch | 84 ----------------------
2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch | 32 ---------
3 files changed, 124 deletions(-)
diff --git a/0000_README b/0000_README
index fa3fbdb..18e95dd 100644
--- a/0000_README
+++ b/0000_README
@@ -95,14 +95,6 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
Desc: Enable link security restrictions by default.
-Patch: 1600_dm-crypt-limit-max-segment-size.patch
-From: https://bugzilla.kernel.org/show_bug.cgi?id=104421
-Desc: dm crypt: constrain crypt device's max_segment_size to PAGE_SIZE.
-
-Patch: 2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch
-From: http://git.kernel.org/
-Desc: inet: Patch to fix potential deadlock in reqsk_queue_unlink()
-
Patch: 2700_ThinkPad-30-brightness-control-fix.patch
From: Seth Forshee <seth.forshee@canonical.com>
Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
diff --git a/1600_dm-crypt-limit-max-segment-size.patch b/1600_dm-crypt-limit-max-segment-size.patch
deleted file mode 100644
index 82aca44..0000000
--- a/1600_dm-crypt-limit-max-segment-size.patch
+++ /dev/null
@@ -1,84 +0,0 @@
-From 586b286b110e94eb31840ac5afc0c24e0881fe34 Mon Sep 17 00:00:00 2001
-From: Mike Snitzer <snitzer@redhat.com>
-Date: Wed, 9 Sep 2015 21:34:51 -0400
-Subject: dm crypt: constrain crypt device's max_segment_size to PAGE_SIZE
-
-Setting the dm-crypt device's max_segment_size to PAGE_SIZE is an
-unfortunate constraint that is required to avoid the potential for
-exceeding dm-crypt's underlying device's max_segments limits -- due to
-crypt_alloc_buffer() possibly allocating pages for the encryption bio
-that are not as physically contiguous as the original bio.
-
-It is interesting to note that this problem was already fixed back in
-2007 via commit 91e106259 ("dm crypt: use bio_add_page"). But Linux 4.0
-commit cf2f1abfb ("dm crypt: don't allocate pages for a partial
-request") regressed dm-crypt back to _not_ using bio_add_page(). But
-given dm-crypt's cpu parallelization changes all depend on commit
-cf2f1abfb's abandoning of the more complex io fragments processing that
-dm-crypt previously had we cannot easily go back to using
-bio_add_page().
-
-So all said the cleanest way to resolve this issue is to fix dm-crypt to
-properly constrain the original bios entering dm-crypt so the encryption
-bios that dm-crypt generates from the original bios are always
-compatible with the underlying device's max_segments queue limits.
-
-It should be noted that technically Linux 4.3 does _not_ need this fix
-because of the block core's new late bio-splitting capability. But, it
-is reasoned, there is little to be gained by having the block core split
-the encrypted bio that is composed of PAGE_SIZE segments. That said, in
-the future we may revert this change.
-
-Fixes: cf2f1abfb ("dm crypt: don't allocate pages for a partial request")
-Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=104421
-Suggested-by: Jeff Moyer <jmoyer@redhat.com>
-Signed-off-by: Mike Snitzer <snitzer@redhat.com>
-Cc: stable@vger.kernel.org # 4.0+
-
-diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
-index d60c88d..4b3b6f8 100644
---- a/drivers/md/dm-crypt.c
-+++ b/drivers/md/dm-crypt.c
-@@ -968,7 +968,8 @@ static void crypt_free_buffer_pages(struct crypt_config *cc, struct bio *clone);
-
- /*
- * Generate a new unfragmented bio with the given size
-- * This should never violate the device limitations
-+ * This should never violate the device limitations (but only because
-+ * max_segment_size is being constrained to PAGE_SIZE).
- *
- * This function may be called concurrently. If we allocate from the mempool
- * concurrently, there is a possibility of deadlock. For example, if we have
-@@ -2045,9 +2046,20 @@ static int crypt_iterate_devices(struct dm_target *ti,
- return fn(ti, cc->dev, cc->start, ti->len, data);
- }
-
-+static void crypt_io_hints(struct dm_target *ti, struct queue_limits *limits)
-+{
-+ /*
-+ * Unfortunate constraint that is required to avoid the potential
-+ * for exceeding underlying device's max_segments limits -- due to
-+ * crypt_alloc_buffer() possibly allocating pages for the encryption
-+ * bio that are not as physically contiguous as the original bio.
-+ */
-+ limits->max_segment_size = PAGE_SIZE;
-+}
-+
- static struct target_type crypt_target = {
- .name = "crypt",
-- .version = {1, 14, 0},
-+ .version = {1, 14, 1},
- .module = THIS_MODULE,
- .ctr = crypt_ctr,
- .dtr = crypt_dtr,
-@@ -2058,6 +2070,7 @@ static struct target_type crypt_target = {
- .resume = crypt_resume,
- .message = crypt_message,
- .iterate_devices = crypt_iterate_devices,
-+ .io_hints = crypt_io_hints,
- };
-
- static int __init dm_crypt_init(void)
---
-cgit v0.10.2
-
diff --git a/2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch b/2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch
deleted file mode 100644
index 890f5e5..0000000
--- a/2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-From 83fccfc3940c4a2db90fd7e7079f5b465cd8c6af Mon Sep 17 00:00:00 2001
-From: Eric Dumazet <edumazet@google.com>
-Date: Thu, 13 Aug 2015 15:44:51 -0700
-Subject: inet: fix potential deadlock in reqsk_queue_unlink()
-
-When replacing del_timer() with del_timer_sync(), I introduced
-a deadlock condition :
-
-reqsk_queue_unlink() is called from inet_csk_reqsk_queue_drop()
-
-inet_csk_reqsk_queue_drop() can be called from many contexts,
-one being the timer handler itself (reqsk_timer_handler()).
-
-In this case, del_timer_sync() loops forever.
-
-Simple fix is to test if timer is pending.
-
-Fixes: 2235f2ac75fd ("inet: fix races with reqsk timers")
-Signed-off-by: Eric Dumazet <edumazet@google.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
-
---- a/net/ipv4/inet_connection_sock.c 2015-10-02 07:49:42.759957268 -0400
-+++ b/net/ipv4/inet_connection_sock.c 2015-10-02 07:50:12.929957111 -0400
-@@ -584,7 +584,7 @@ static bool reqsk_queue_unlink(struct re
- }
-
- spin_unlock(&queue->syn_wait_lock);
-- if (del_timer_sync(&req->rsk_timer))
-+ if (timer_pending(&req->rsk_timer) && del_timer_sync(&req->rsk_timer))
- reqsk_put(req);
- return found;
- }
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-10-26 20:49 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-10-26 20:49 UTC (permalink / raw
To: gentoo-commits
commit: a96b0651fc6a971fe0c2d4a77f574c77dfbddd0b
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Oct 26 20:49:29 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Oct 26 20:49:29 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=a96b0651
Linux patch 4.1.11
0000_README | 4 +
1010_linux-4.1.11.patch | 8151 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 8155 insertions(+)
diff --git a/0000_README b/0000_README
index b9b941a..fa3fbdb 100644
--- a/0000_README
+++ b/0000_README
@@ -83,6 +83,10 @@ Patch: 1009_linux-4.1.10.patch
From: http://www.kernel.org
Desc: Linux 4.1.10
+Patch: 1010_linux-4.1.11.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.11
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1010_linux-4.1.11.patch b/1010_linux-4.1.11.patch
new file mode 100644
index 0000000..0200b32
--- /dev/null
+++ b/1010_linux-4.1.11.patch
@@ -0,0 +1,8151 @@
+diff --git a/Documentation/HOWTO b/Documentation/HOWTO
+index 93aa8604630e..21152d397b88 100644
+--- a/Documentation/HOWTO
++++ b/Documentation/HOWTO
+@@ -218,16 +218,16 @@ The development process
+ Linux kernel development process currently consists of a few different
+ main kernel "branches" and lots of different subsystem-specific kernel
+ branches. These different branches are:
+- - main 3.x kernel tree
+- - 3.x.y -stable kernel tree
+- - 3.x -git kernel patches
++ - main 4.x kernel tree
++ - 4.x.y -stable kernel tree
++ - 4.x -git kernel patches
+ - subsystem specific kernel trees and patches
+- - the 3.x -next kernel tree for integration tests
++ - the 4.x -next kernel tree for integration tests
+
+-3.x kernel tree
++4.x kernel tree
+ -----------------
+-3.x kernels are maintained by Linus Torvalds, and can be found on
+-kernel.org in the pub/linux/kernel/v3.x/ directory. Its development
++4.x kernels are maintained by Linus Torvalds, and can be found on
++kernel.org in the pub/linux/kernel/v4.x/ directory. Its development
+ process is as follows:
+ - As soon as a new kernel is released a two weeks window is open,
+ during this period of time maintainers can submit big diffs to
+@@ -262,20 +262,20 @@ mailing list about kernel releases:
+ released according to perceived bug status, not according to a
+ preconceived timeline."
+
+-3.x.y -stable kernel tree
++4.x.y -stable kernel tree
+ ---------------------------
+ Kernels with 3-part versions are -stable kernels. They contain
+ relatively small and critical fixes for security problems or significant
+-regressions discovered in a given 3.x kernel.
++regressions discovered in a given 4.x kernel.
+
+ This is the recommended branch for users who want the most recent stable
+ kernel and are not interested in helping test development/experimental
+ versions.
+
+-If no 3.x.y kernel is available, then the highest numbered 3.x
++If no 4.x.y kernel is available, then the highest numbered 4.x
+ kernel is the current stable kernel.
+
+-3.x.y are maintained by the "stable" team <stable@vger.kernel.org>, and
++4.x.y are maintained by the "stable" team <stable@vger.kernel.org>, and
+ are released as needs dictate. The normal release period is approximately
+ two weeks, but it can be longer if there are no pressing problems. A
+ security-related problem, instead, can cause a release to happen almost
+@@ -285,7 +285,7 @@ The file Documentation/stable_kernel_rules.txt in the kernel tree
+ documents what kinds of changes are acceptable for the -stable tree, and
+ how the release process works.
+
+-3.x -git patches
++4.x -git patches
+ ------------------
+ These are daily snapshots of Linus' kernel tree which are managed in a
+ git repository (hence the name.) These patches are usually released
+@@ -317,9 +317,9 @@ revisions to it, and maintainers can mark patches as under review,
+ accepted, or rejected. Most of these patchwork sites are listed at
+ http://patchwork.kernel.org/.
+
+-3.x -next kernel tree for integration tests
++4.x -next kernel tree for integration tests
+ ---------------------------------------------
+-Before updates from subsystem trees are merged into the mainline 3.x
++Before updates from subsystem trees are merged into the mainline 4.x
+ tree, they need to be integration-tested. For this purpose, a special
+ testing repository exists into which virtually all subsystem trees are
+ pulled on an almost daily basis:
+diff --git a/Makefile b/Makefile
+index d02f16b510dc..c7d877b1c248 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 10
++SUBLEVEL = 11
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/Makefile b/arch/arm/Makefile
+index 985227cbbd1b..47f10e7ad1f6 100644
+--- a/arch/arm/Makefile
++++ b/arch/arm/Makefile
+@@ -50,6 +50,14 @@ AS += -EL
+ LD += -EL
+ endif
+
++#
++# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
++# later may result in code being generated that handles signed short and signed
++# char struct members incorrectly. So disable it.
++# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
++#
++KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
++
+ # This selects which instruction set is used.
+ # Note that GCC does not numerically define an architecture version
+ # macro, but instead defines a whole series of macros which makes
+diff --git a/arch/arm/boot/dts/imx25-pdk.dts b/arch/arm/boot/dts/imx25-pdk.dts
+index dd45e6971bc3..9351296356dc 100644
+--- a/arch/arm/boot/dts/imx25-pdk.dts
++++ b/arch/arm/boot/dts/imx25-pdk.dts
+@@ -10,6 +10,7 @@
+ */
+
+ /dts-v1/;
++#include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/input/input.h>
+ #include "imx25.dtsi"
+
+@@ -114,8 +115,8 @@
+ &esdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc1>;
+- cd-gpios = <&gpio2 1 0>;
+- wp-gpios = <&gpio2 0 0>;
++ cd-gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio2 0 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+diff --git a/arch/arm/boot/dts/imx51-apf51dev.dts b/arch/arm/boot/dts/imx51-apf51dev.dts
+index 93d3ea12328c..0f3fe29b816e 100644
+--- a/arch/arm/boot/dts/imx51-apf51dev.dts
++++ b/arch/arm/boot/dts/imx51-apf51dev.dts
+@@ -98,7 +98,7 @@
+ &esdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc1>;
+- cd-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio2 29 GPIO_ACTIVE_LOW>;
+ bus-width = <4>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx53-ard.dts b/arch/arm/boot/dts/imx53-ard.dts
+index e9337ad52f59..3bc18835fb4b 100644
+--- a/arch/arm/boot/dts/imx53-ard.dts
++++ b/arch/arm/boot/dts/imx53-ard.dts
+@@ -103,8 +103,8 @@
+ &esdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc1>;
+- cd-gpios = <&gpio1 1 0>;
+- wp-gpios = <&gpio1 9 0>;
++ cd-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+diff --git a/arch/arm/boot/dts/imx53-m53evk.dts b/arch/arm/boot/dts/imx53-m53evk.dts
+index d0e0f57eb432..53f40885c530 100644
+--- a/arch/arm/boot/dts/imx53-m53evk.dts
++++ b/arch/arm/boot/dts/imx53-m53evk.dts
+@@ -124,8 +124,8 @@
+ &esdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc1>;
+- cd-gpios = <&gpio1 1 0>;
+- wp-gpios = <&gpio1 9 0>;
++ cd-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+diff --git a/arch/arm/boot/dts/imx53-qsb-common.dtsi b/arch/arm/boot/dts/imx53-qsb-common.dtsi
+index 181ae5ebf23f..1f55187ed9ce 100644
+--- a/arch/arm/boot/dts/imx53-qsb-common.dtsi
++++ b/arch/arm/boot/dts/imx53-qsb-common.dtsi
+@@ -147,8 +147,8 @@
+ &esdhc3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc3>;
+- cd-gpios = <&gpio3 11 0>;
+- wp-gpios = <&gpio3 12 0>;
++ cd-gpios = <&gpio3 11 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio3 12 GPIO_ACTIVE_HIGH>;
+ bus-width = <8>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx53-smd.dts b/arch/arm/boot/dts/imx53-smd.dts
+index 1d325576bcc0..fc89ce1e5763 100644
+--- a/arch/arm/boot/dts/imx53-smd.dts
++++ b/arch/arm/boot/dts/imx53-smd.dts
+@@ -41,8 +41,8 @@
+ &esdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc1>;
+- cd-gpios = <&gpio3 13 0>;
+- wp-gpios = <&gpio4 11 0>;
++ cd-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio4 11 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+diff --git a/arch/arm/boot/dts/imx53-tqma53.dtsi b/arch/arm/boot/dts/imx53-tqma53.dtsi
+index 4f1f0e2868bf..e03373a58760 100644
+--- a/arch/arm/boot/dts/imx53-tqma53.dtsi
++++ b/arch/arm/boot/dts/imx53-tqma53.dtsi
+@@ -41,8 +41,8 @@
+ pinctrl-0 = <&pinctrl_esdhc2>,
+ <&pinctrl_esdhc2_cdwp>;
+ vmmc-supply = <®_3p3v>;
+- wp-gpios = <&gpio1 2 0>;
+- cd-gpios = <&gpio1 4 0>;
++ wp-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
+ status = "disabled";
+ };
+
+diff --git a/arch/arm/boot/dts/imx53-tx53.dtsi b/arch/arm/boot/dts/imx53-tx53.dtsi
+index 704bd72cbfec..d3e50b22064f 100644
+--- a/arch/arm/boot/dts/imx53-tx53.dtsi
++++ b/arch/arm/boot/dts/imx53-tx53.dtsi
+@@ -183,7 +183,7 @@
+ };
+
+ &esdhc1 {
+- cd-gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio3 24 GPIO_ACTIVE_LOW>;
+ fsl,wp-controller;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc1>;
+@@ -191,7 +191,7 @@
+ };
+
+ &esdhc2 {
+- cd-gpios = <&gpio3 25 GPIO_ACTIVE_HIGH>;
++ cd-gpios = <&gpio3 25 GPIO_ACTIVE_LOW>;
+ fsl,wp-controller;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc2>;
+diff --git a/arch/arm/boot/dts/imx53-voipac-bsb.dts b/arch/arm/boot/dts/imx53-voipac-bsb.dts
+index c17d3ad6dba5..fc51b87ad208 100644
+--- a/arch/arm/boot/dts/imx53-voipac-bsb.dts
++++ b/arch/arm/boot/dts/imx53-voipac-bsb.dts
+@@ -119,8 +119,8 @@
+ &esdhc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_esdhc2>;
+- cd-gpios = <&gpio3 25 0>;
+- wp-gpios = <&gpio2 19 0>;
++ cd-gpios = <&gpio3 25 GPIO_ACTIVE_LOW>;
++ wp-gpios = <&gpio2 19 GPIO_ACTIVE_HIGH>;
+ vmmc-supply = <®_3p3v>;
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/imx6qdl-rex.dtsi b/arch/arm/boot/dts/imx6qdl-rex.dtsi
+index 488a640796ac..394a4ace351a 100644
+--- a/arch/arm/boot/dts/imx6qdl-rex.dtsi
++++ b/arch/arm/boot/dts/imx6qdl-rex.dtsi
+@@ -35,7 +35,6 @@
+ compatible = "regulator-fixed";
+ reg = <1>;
+ pinctrl-names = "default";
+- pinctrl-0 = <&pinctrl_usbh1>;
+ regulator-name = "usbh1_vbus";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+@@ -47,7 +46,6 @@
+ compatible = "regulator-fixed";
+ reg = <2>;
+ pinctrl-names = "default";
+- pinctrl-0 = <&pinctrl_usbotg>;
+ regulator-name = "usb_otg_vbus";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts
+index a5474113cd50..67659a0ed13e 100644
+--- a/arch/arm/boot/dts/omap3-beagle.dts
++++ b/arch/arm/boot/dts/omap3-beagle.dts
+@@ -202,7 +202,7 @@
+
+ tfp410_pins: pinmux_tfp410_pins {
+ pinctrl-single,pins = <
+- 0x194 (PIN_OUTPUT | MUX_MODE4) /* hdq_sio.gpio_170 */
++ 0x196 (PIN_OUTPUT | MUX_MODE4) /* hdq_sio.gpio_170 */
+ >;
+ };
+
+diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts
+index 74777a6e200a..1b958e92d674 100644
+--- a/arch/arm/boot/dts/omap5-uevm.dts
++++ b/arch/arm/boot/dts/omap5-uevm.dts
+@@ -174,8 +174,8 @@
+
+ i2c5_pins: pinmux_i2c5_pins {
+ pinctrl-single,pins = <
+- 0x184 (PIN_INPUT | MUX_MODE0) /* i2c5_scl */
+- 0x186 (PIN_INPUT | MUX_MODE0) /* i2c5_sda */
++ 0x186 (PIN_INPUT | MUX_MODE0) /* i2c5_scl */
++ 0x188 (PIN_INPUT | MUX_MODE0) /* i2c5_sda */
+ >;
+ };
+
+diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c
+index a6ad93c9bce3..fd9eefce0a7b 100644
+--- a/arch/arm/kernel/kgdb.c
++++ b/arch/arm/kernel/kgdb.c
+@@ -259,15 +259,17 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
+ if (err)
+ return err;
+
+- patch_text((void *)bpt->bpt_addr,
+- *(unsigned int *)arch_kgdb_ops.gdb_bpt_instr);
++ /* Machine is already stopped, so we can use __patch_text() directly */
++ __patch_text((void *)bpt->bpt_addr,
++ *(unsigned int *)arch_kgdb_ops.gdb_bpt_instr);
+
+ return err;
+ }
+
+ int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt)
+ {
+- patch_text((void *)bpt->bpt_addr, *(unsigned int *)bpt->saved_instr);
++ /* Machine is already stopped, so we can use __patch_text() directly */
++ __patch_text((void *)bpt->bpt_addr, *(unsigned int *)bpt->saved_instr);
+
+ return 0;
+ }
+diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
+index 423663e23791..586eef26203d 100644
+--- a/arch/arm/kernel/signal.c
++++ b/arch/arm/kernel/signal.c
+@@ -343,12 +343,17 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig,
+ */
+ thumb = handler & 1;
+
+-#if __LINUX_ARM_ARCH__ >= 7
++#if __LINUX_ARM_ARCH__ >= 6
+ /*
+- * Clear the If-Then Thumb-2 execution state
+- * ARM spec requires this to be all 000s in ARM mode
+- * Snapdragon S4/Krait misbehaves on a Thumb=>ARM
+- * signal transition without this.
++ * Clear the If-Then Thumb-2 execution state. ARM spec
++ * requires this to be all 000s in ARM mode. Snapdragon
++ * S4/Krait misbehaves on a Thumb=>ARM signal transition
++ * without this.
++ *
++ * We must do this whenever we are running on a Thumb-2
++ * capable CPU, which includes ARMv6T2. However, we elect
++ * to do this whenever we're on an ARMv6 or later CPU for
++ * simplicity.
+ */
+ cpsr &= ~PSR_IT_MASK;
+ #endif
+diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S
+index 48efe2ee452c..58048b333d31 100644
+--- a/arch/arm/kvm/interrupts_head.S
++++ b/arch/arm/kvm/interrupts_head.S
+@@ -518,8 +518,7 @@ ARM_BE8(rev r6, r6 )
+
+ mrc p15, 0, r2, c14, c3, 1 @ CNTV_CTL
+ str r2, [vcpu, #VCPU_TIMER_CNTV_CTL]
+- bic r2, #1 @ Clear ENABLE
+- mcr p15, 0, r2, c14, c3, 1 @ CNTV_CTL
++
+ isb
+
+ mrrc p15, 3, rr_lo_hi(r2, r3), c14 @ CNTV_CVAL
+@@ -532,6 +531,9 @@ ARM_BE8(rev r6, r6 )
+ mcrr p15, 4, r2, r2, c14 @ CNTVOFF
+
+ 1:
++ mov r2, #0 @ Clear ENABLE
++ mcr p15, 0, r2, c14, c3, 1 @ CNTV_CTL
++
+ @ Allow physical timer/counter access for the host
+ mrc p15, 4, r2, c14, c1, 0 @ CNTHCTL
+ orr r2, r2, #(CNTHCTL_PL1PCEN | CNTHCTL_PL1PCTEN)
+diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
+index 1d5accbd3dcf..191dcfab9f60 100644
+--- a/arch/arm/kvm/mmu.c
++++ b/arch/arm/kvm/mmu.c
+@@ -1790,8 +1790,10 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
+ if (vma->vm_flags & VM_PFNMAP) {
+ gpa_t gpa = mem->guest_phys_addr +
+ (vm_start - mem->userspace_addr);
+- phys_addr_t pa = (vma->vm_pgoff << PAGE_SHIFT) +
+- vm_start - vma->vm_start;
++ phys_addr_t pa;
++
++ pa = (phys_addr_t)vma->vm_pgoff << PAGE_SHIFT;
++ pa += vm_start - vma->vm_start;
+
+ /* IO region dirty page logging not allowed */
+ if (memslot->flags & KVM_MEM_LOG_DIRTY_PAGES)
+diff --git a/arch/arm/mach-exynos/mcpm-exynos.c b/arch/arm/mach-exynos/mcpm-exynos.c
+index 9bdf54795f05..56978199c479 100644
+--- a/arch/arm/mach-exynos/mcpm-exynos.c
++++ b/arch/arm/mach-exynos/mcpm-exynos.c
+@@ -20,6 +20,7 @@
+ #include <asm/cputype.h>
+ #include <asm/cp15.h>
+ #include <asm/mcpm.h>
++#include <asm/smp_plat.h>
+
+ #include "regs-pmu.h"
+ #include "common.h"
+@@ -70,7 +71,31 @@ static int exynos_cpu_powerup(unsigned int cpu, unsigned int cluster)
+ cluster >= EXYNOS5420_NR_CLUSTERS)
+ return -EINVAL;
+
+- exynos_cpu_power_up(cpunr);
++ if (!exynos_cpu_power_state(cpunr)) {
++ exynos_cpu_power_up(cpunr);
++
++ /*
++ * This assumes the cluster number of the big cores(Cortex A15)
++ * is 0 and the Little cores(Cortex A7) is 1.
++ * When the system was booted from the Little core,
++ * they should be reset during power up cpu.
++ */
++ if (cluster &&
++ cluster == MPIDR_AFFINITY_LEVEL(cpu_logical_map(0), 1)) {
++ /*
++ * Before we reset the Little cores, we should wait
++ * the SPARE2 register is set to 1 because the init
++ * codes of the iROM will set the register after
++ * initialization.
++ */
++ while (!pmu_raw_readl(S5P_PMU_SPARE2))
++ udelay(10);
++
++ pmu_raw_writel(EXYNOS5420_KFC_CORE_RESET(cpu),
++ EXYNOS_SWRESET);
++ }
++ }
++
+ return 0;
+ }
+
+diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
+index b7614333d296..fba9068ed260 100644
+--- a/arch/arm/mach-exynos/regs-pmu.h
++++ b/arch/arm/mach-exynos/regs-pmu.h
+@@ -513,6 +513,12 @@ static inline unsigned int exynos_pmu_cpunr(unsigned int mpidr)
+ #define SPREAD_ENABLE 0xF
+ #define SPREAD_USE_STANDWFI 0xF
+
++#define EXYNOS5420_KFC_CORE_RESET0 BIT(8)
++#define EXYNOS5420_KFC_ETM_RESET0 BIT(20)
++
++#define EXYNOS5420_KFC_CORE_RESET(_nr) \
++ ((EXYNOS5420_KFC_CORE_RESET0 | EXYNOS5420_KFC_ETM_RESET0) << (_nr))
++
+ #define EXYNOS5420_BB_CON1 0x0784
+ #define EXYNOS5420_BB_SEL_EN BIT(31)
+ #define EXYNOS5420_BB_PMOS_EN BIT(7)
+diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
+index 352962bc2e78..5170fd5c8e97 100644
+--- a/arch/arm64/kernel/efi.c
++++ b/arch/arm64/kernel/efi.c
+@@ -257,7 +257,8 @@ static bool __init efi_virtmap_init(void)
+ */
+ if (!is_normal_ram(md))
+ prot = __pgprot(PROT_DEVICE_nGnRE);
+- else if (md->type == EFI_RUNTIME_SERVICES_CODE)
++ else if (md->type == EFI_RUNTIME_SERVICES_CODE ||
++ !PAGE_ALIGNED(md->phys_addr))
+ prot = PAGE_KERNEL_EXEC;
+ else
+ prot = PAGE_KERNEL;
+diff --git a/arch/arm64/kernel/entry-ftrace.S b/arch/arm64/kernel/entry-ftrace.S
+index 08cafc518b9a..0f03a8fe2314 100644
+--- a/arch/arm64/kernel/entry-ftrace.S
++++ b/arch/arm64/kernel/entry-ftrace.S
+@@ -178,6 +178,24 @@ ENTRY(ftrace_stub)
+ ENDPROC(ftrace_stub)
+
+ #ifdef CONFIG_FUNCTION_GRAPH_TRACER
++ /* save return value regs*/
++ .macro save_return_regs
++ sub sp, sp, #64
++ stp x0, x1, [sp]
++ stp x2, x3, [sp, #16]
++ stp x4, x5, [sp, #32]
++ stp x6, x7, [sp, #48]
++ .endm
++
++ /* restore return value regs*/
++ .macro restore_return_regs
++ ldp x0, x1, [sp]
++ ldp x2, x3, [sp, #16]
++ ldp x4, x5, [sp, #32]
++ ldp x6, x7, [sp, #48]
++ add sp, sp, #64
++ .endm
++
+ /*
+ * void ftrace_graph_caller(void)
+ *
+@@ -204,11 +222,11 @@ ENDPROC(ftrace_graph_caller)
+ * only when CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST is enabled.
+ */
+ ENTRY(return_to_handler)
+- str x0, [sp, #-16]!
++ save_return_regs
+ mov x0, x29 // parent's fp
+ bl ftrace_return_to_handler// addr = ftrace_return_to_hander(fp);
+ mov x30, x0 // restore the original return address
+- ldr x0, [sp], #16
++ restore_return_regs
+ ret
+ END(return_to_handler)
+ #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
+diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
+index 96da13167d4a..fa5efaa5c3ac 100644
+--- a/arch/arm64/mm/fault.c
++++ b/arch/arm64/mm/fault.c
+@@ -279,6 +279,7 @@ retry:
+ * starvation.
+ */
+ mm_flags &= ~FAULT_FLAG_ALLOW_RETRY;
++ mm_flags |= FAULT_FLAG_TRIED;
+ goto retry;
+ }
+ }
+diff --git a/arch/m68k/include/asm/linkage.h b/arch/m68k/include/asm/linkage.h
+index 5a822bb790f7..066e74f666ae 100644
+--- a/arch/m68k/include/asm/linkage.h
++++ b/arch/m68k/include/asm/linkage.h
+@@ -4,4 +4,34 @@
+ #define __ALIGN .align 4
+ #define __ALIGN_STR ".align 4"
+
++/*
++ * Make sure the compiler doesn't do anything stupid with the
++ * arguments on the stack - they are owned by the *caller*, not
++ * the callee. This just fools gcc into not spilling into them,
++ * and keeps it from doing tailcall recursion and/or using the
++ * stack slots for temporaries, since they are live and "used"
++ * all the way to the end of the function.
++ */
++#define asmlinkage_protect(n, ret, args...) \
++ __asmlinkage_protect##n(ret, ##args)
++#define __asmlinkage_protect_n(ret, args...) \
++ __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args)
++#define __asmlinkage_protect0(ret) \
++ __asmlinkage_protect_n(ret)
++#define __asmlinkage_protect1(ret, arg1) \
++ __asmlinkage_protect_n(ret, "m" (arg1))
++#define __asmlinkage_protect2(ret, arg1, arg2) \
++ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2))
++#define __asmlinkage_protect3(ret, arg1, arg2, arg3) \
++ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3))
++#define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \
++ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
++ "m" (arg4))
++#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \
++ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
++ "m" (arg4), "m" (arg5))
++#define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \
++ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
++ "m" (arg4), "m" (arg5), "m" (arg6))
++
+ #endif
+diff --git a/arch/mips/loongson/common/env.c b/arch/mips/loongson/common/env.c
+index 22f04ca2ff3e..2efb18aafa4f 100644
+--- a/arch/mips/loongson/common/env.c
++++ b/arch/mips/loongson/common/env.c
+@@ -64,6 +64,9 @@ void __init prom_init_env(void)
+ }
+ if (memsize == 0)
+ memsize = 256;
++
++ loongson_sysconf.nr_uarts = 1;
++
+ pr_info("memsize=%u, highmemsize=%u\n", memsize, highmemsize);
+ #else
+ struct boot_params *boot_p;
+diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
+index 609d1241b0c4..371eec113659 100644
+--- a/arch/mips/mm/dma-default.c
++++ b/arch/mips/mm/dma-default.c
+@@ -100,7 +100,7 @@ static gfp_t massage_gfp_flags(const struct device *dev, gfp_t gfp)
+ else
+ #endif
+ #if defined(CONFIG_ZONE_DMA) && !defined(CONFIG_ZONE_DMA32)
+- if (dev->coherent_dma_mask < DMA_BIT_MASK(64))
++ if (dev->coherent_dma_mask < DMA_BIT_MASK(sizeof(phys_addr_t) * 8))
+ dma_flag = __GFP_DMA;
+ else
+ #endif
+diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
+index 453a8a47a467..964c0ce584ce 100644
+--- a/arch/powerpc/kvm/book3s.c
++++ b/arch/powerpc/kvm/book3s.c
+@@ -826,12 +826,15 @@ int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
+ unsigned long size = kvmppc_get_gpr(vcpu, 4);
+ unsigned long addr = kvmppc_get_gpr(vcpu, 5);
+ u64 buf;
++ int srcu_idx;
+ int ret;
+
+ if (!is_power_of_2(size) || (size > sizeof(buf)))
+ return H_TOO_HARD;
+
++ srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
+ ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
++ srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
+ if (ret != 0)
+ return H_TOO_HARD;
+
+@@ -866,6 +869,7 @@ int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
+ unsigned long addr = kvmppc_get_gpr(vcpu, 5);
+ unsigned long val = kvmppc_get_gpr(vcpu, 6);
+ u64 buf;
++ int srcu_idx;
+ int ret;
+
+ switch (size) {
+@@ -889,7 +893,9 @@ int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
+ return H_TOO_HARD;
+ }
+
++ srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
+ ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
++ srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
+ if (ret != 0)
+ return H_TOO_HARD;
+
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index 3b2d2c5b6376..ffd98b2bfa16 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -1171,6 +1171,7 @@ mc_cont:
+ bl kvmhv_accumulate_time
+ #endif
+
++ mr r3, r12
+ /* Increment exit count, poke other threads to exit */
+ bl kvmhv_commence_exit
+ nop
+diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
+index bca2aeb6e4b6..3ff29cf6d05c 100644
+--- a/arch/powerpc/platforms/powernv/pci.c
++++ b/arch/powerpc/platforms/powernv/pci.c
+@@ -99,6 +99,7 @@ static void pnv_teardown_msi_irqs(struct pci_dev *pdev)
+ struct pci_controller *hose = pci_bus_to_host(pdev->bus);
+ struct pnv_phb *phb = hose->private_data;
+ struct msi_desc *entry;
++ irq_hw_number_t hwirq;
+
+ if (WARN_ON(!phb))
+ return;
+@@ -106,10 +107,10 @@ static void pnv_teardown_msi_irqs(struct pci_dev *pdev)
+ list_for_each_entry(entry, &pdev->msi_list, list) {
+ if (entry->irq == NO_IRQ)
+ continue;
++ hwirq = virq_to_hw(entry->irq);
+ irq_set_msi_desc(entry->irq, NULL);
+- msi_bitmap_free_hwirqs(&phb->msi_bmp,
+- virq_to_hw(entry->irq) - phb->msi_base, 1);
+ irq_dispose_mapping(entry->irq);
++ msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq - phb->msi_base, 1);
+ }
+ }
+ #endif /* CONFIG_PCI_MSI */
+diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
+index f086c6f22dc9..fd16cb5d83f3 100644
+--- a/arch/powerpc/sysdev/fsl_msi.c
++++ b/arch/powerpc/sysdev/fsl_msi.c
+@@ -128,15 +128,16 @@ static void fsl_teardown_msi_irqs(struct pci_dev *pdev)
+ {
+ struct msi_desc *entry;
+ struct fsl_msi *msi_data;
++ irq_hw_number_t hwirq;
+
+ list_for_each_entry(entry, &pdev->msi_list, list) {
+ if (entry->irq == NO_IRQ)
+ continue;
++ hwirq = virq_to_hw(entry->irq);
+ msi_data = irq_get_chip_data(entry->irq);
+ irq_set_msi_desc(entry->irq, NULL);
+- msi_bitmap_free_hwirqs(&msi_data->bitmap,
+- virq_to_hw(entry->irq), 1);
+ irq_dispose_mapping(entry->irq);
++ msi_bitmap_free_hwirqs(&msi_data->bitmap, hwirq, 1);
+ }
+
+ return;
+diff --git a/arch/powerpc/sysdev/mpic_pasemi_msi.c b/arch/powerpc/sysdev/mpic_pasemi_msi.c
+index a3f660eed6de..89496cf4e04d 100644
+--- a/arch/powerpc/sysdev/mpic_pasemi_msi.c
++++ b/arch/powerpc/sysdev/mpic_pasemi_msi.c
+@@ -65,6 +65,7 @@ static struct irq_chip mpic_pasemi_msi_chip = {
+ static void pasemi_msi_teardown_msi_irqs(struct pci_dev *pdev)
+ {
+ struct msi_desc *entry;
++ irq_hw_number_t hwirq;
+
+ pr_debug("pasemi_msi_teardown_msi_irqs, pdev %p\n", pdev);
+
+@@ -72,10 +73,11 @@ static void pasemi_msi_teardown_msi_irqs(struct pci_dev *pdev)
+ if (entry->irq == NO_IRQ)
+ continue;
+
++ hwirq = virq_to_hw(entry->irq);
+ irq_set_msi_desc(entry->irq, NULL);
+- msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap,
+- virq_to_hw(entry->irq), ALLOC_CHUNK);
+ irq_dispose_mapping(entry->irq);
++ msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap,
++ hwirq, ALLOC_CHUNK);
+ }
+
+ return;
+diff --git a/arch/powerpc/sysdev/mpic_u3msi.c b/arch/powerpc/sysdev/mpic_u3msi.c
+index b2cef1809389..13a34b237559 100644
+--- a/arch/powerpc/sysdev/mpic_u3msi.c
++++ b/arch/powerpc/sysdev/mpic_u3msi.c
+@@ -107,15 +107,16 @@ static u64 find_u4_magic_addr(struct pci_dev *pdev, unsigned int hwirq)
+ static void u3msi_teardown_msi_irqs(struct pci_dev *pdev)
+ {
+ struct msi_desc *entry;
++ irq_hw_number_t hwirq;
+
+ list_for_each_entry(entry, &pdev->msi_list, list) {
+ if (entry->irq == NO_IRQ)
+ continue;
+
++ hwirq = virq_to_hw(entry->irq);
+ irq_set_msi_desc(entry->irq, NULL);
+- msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap,
+- virq_to_hw(entry->irq), 1);
+ irq_dispose_mapping(entry->irq);
++ msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap, hwirq, 1);
+ }
+
+ return;
+diff --git a/arch/powerpc/sysdev/ppc4xx_msi.c b/arch/powerpc/sysdev/ppc4xx_msi.c
+index 6e2e6aa378bb..02a137daa182 100644
+--- a/arch/powerpc/sysdev/ppc4xx_msi.c
++++ b/arch/powerpc/sysdev/ppc4xx_msi.c
+@@ -124,16 +124,17 @@ void ppc4xx_teardown_msi_irqs(struct pci_dev *dev)
+ {
+ struct msi_desc *entry;
+ struct ppc4xx_msi *msi_data = &ppc4xx_msi;
++ irq_hw_number_t hwirq;
+
+ dev_dbg(&dev->dev, "PCIE-MSI: tearing down msi irqs\n");
+
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ if (entry->irq == NO_IRQ)
+ continue;
++ hwirq = virq_to_hw(entry->irq);
+ irq_set_msi_desc(entry->irq, NULL);
+- msi_bitmap_free_hwirqs(&msi_data->bitmap,
+- virq_to_hw(entry->irq), 1);
+ irq_dispose_mapping(entry->irq);
++ msi_bitmap_free_hwirqs(&msi_data->bitmap, hwirq, 1);
+ }
+ }
+
+diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile
+index d4788111c161..fac6ac9790fa 100644
+--- a/arch/s390/boot/compressed/Makefile
++++ b/arch/s390/boot/compressed/Makefile
+@@ -10,7 +10,7 @@ targets += misc.o piggy.o sizes.h head.o
+
+ KBUILD_CFLAGS := -m64 -D__KERNEL__ $(LINUX_INCLUDE) -O2
+ KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
+-KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks
++KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks -msoft-float
+ KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
+ KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
+
+diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
+index fe8d6924efaa..c78ba51ae285 100644
+--- a/arch/s390/kernel/compat_signal.c
++++ b/arch/s390/kernel/compat_signal.c
+@@ -48,6 +48,19 @@ typedef struct
+ struct ucontext32 uc;
+ } rt_sigframe32;
+
++static inline void sigset_to_sigset32(unsigned long *set64,
++ compat_sigset_word *set32)
++{
++ set32[0] = (compat_sigset_word) set64[0];
++ set32[1] = (compat_sigset_word)(set64[0] >> 32);
++}
++
++static inline void sigset32_to_sigset(compat_sigset_word *set32,
++ unsigned long *set64)
++{
++ set64[0] = (unsigned long) set32[0] | ((unsigned long) set32[1] << 32);
++}
++
+ int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
+ {
+ int err;
+@@ -303,10 +316,12 @@ COMPAT_SYSCALL_DEFINE0(sigreturn)
+ {
+ struct pt_regs *regs = task_pt_regs(current);
+ sigframe32 __user *frame = (sigframe32 __user *)regs->gprs[15];
++ compat_sigset_t cset;
+ sigset_t set;
+
+- if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE32))
++ if (__copy_from_user(&cset.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE32))
+ goto badframe;
++ sigset32_to_sigset(cset.sig, set.sig);
+ set_current_blocked(&set);
+ if (restore_sigregs32(regs, &frame->sregs))
+ goto badframe;
+@@ -323,10 +338,12 @@ COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
+ {
+ struct pt_regs *regs = task_pt_regs(current);
+ rt_sigframe32 __user *frame = (rt_sigframe32 __user *)regs->gprs[15];
++ compat_sigset_t cset;
+ sigset_t set;
+
+- if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
++ if (__copy_from_user(&cset, &frame->uc.uc_sigmask, sizeof(cset)))
+ goto badframe;
++ sigset32_to_sigset(cset.sig, set.sig);
+ set_current_blocked(&set);
+ if (compat_restore_altstack(&frame->uc.uc_stack))
+ goto badframe;
+@@ -397,7 +414,7 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
+ return -EFAULT;
+
+ /* Create struct sigcontext32 on the signal stack */
+- memcpy(&sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE32);
++ sigset_to_sigset32(set->sig, sc.oldmask);
+ sc.sregs = (__u32)(unsigned long __force) &frame->sregs;
+ if (__copy_to_user(&frame->sc, &sc, sizeof(frame->sc)))
+ return -EFAULT;
+@@ -458,6 +475,7 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
+ static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set,
+ struct pt_regs *regs)
+ {
++ compat_sigset_t cset;
+ rt_sigframe32 __user *frame;
+ unsigned long restorer;
+ size_t frame_size;
+@@ -505,11 +523,12 @@ static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set,
+ store_sigregs();
+
+ /* Create ucontext on the signal stack. */
++ sigset_to_sigset32(set->sig, cset.sig);
+ if (__put_user(uc_flags, &frame->uc.uc_flags) ||
+ __put_user(0, &frame->uc.uc_link) ||
+ __compat_save_altstack(&frame->uc.uc_stack, regs->gprs[15]) ||
+ save_sigregs32(regs, &frame->uc.uc_mcontext) ||
+- __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)) ||
++ __copy_to_user(&frame->uc.uc_sigmask, &cset, sizeof(cset)) ||
+ save_sigregs_ext32(regs, &frame->uc.uc_mcontext_ext))
+ return -EFAULT;
+
+diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
+index aef653193160..d1918a8c4393 100644
+--- a/arch/x86/kernel/alternative.c
++++ b/arch/x86/kernel/alternative.c
+@@ -325,10 +325,15 @@ done:
+
+ static void __init_or_module optimize_nops(struct alt_instr *a, u8 *instr)
+ {
++ unsigned long flags;
++
+ if (instr[0] != 0x90)
+ return;
+
++ local_irq_save(flags);
+ add_nops(instr + (a->instrlen - a->padlen), a->padlen);
++ sync_core();
++ local_irq_restore(flags);
+
+ DUMP_BYTES(instr, a->instrlen, "%p: [%d:%d) optimized NOPs: ",
+ instr, a->instrlen - a->padlen, a->padlen);
+diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
+index cde732c1b495..307a49828826 100644
+--- a/arch/x86/kernel/apic/apic.c
++++ b/arch/x86/kernel/apic/apic.c
+@@ -336,6 +336,13 @@ static void __setup_APIC_LVTT(unsigned int clocks, int oneshot, int irqen)
+ apic_write(APIC_LVTT, lvtt_value);
+
+ if (lvtt_value & APIC_LVT_TIMER_TSCDEADLINE) {
++ /*
++ * See Intel SDM: TSC-Deadline Mode chapter. In xAPIC mode,
++ * writing to the APIC LVTT and TSC_DEADLINE MSR isn't serialized.
++ * According to Intel, MFENCE can do the serialization here.
++ */
++ asm volatile("mfence" : : : "memory");
++
+ printk_once(KERN_DEBUG "TSC deadline timer enabled\n");
+ return;
+ }
+diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
+index 2813ea0f142e..22212615a137 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel.c
++++ b/arch/x86/kernel/cpu/perf_event_intel.c
+@@ -2098,9 +2098,12 @@ static struct event_constraint *
+ intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
+ struct perf_event *event)
+ {
+- struct event_constraint *c1 = cpuc->event_constraint[idx];
++ struct event_constraint *c1 = NULL;
+ struct event_constraint *c2;
+
++ if (idx >= 0) /* fake does < 0 */
++ c1 = cpuc->event_constraint[idx];
++
+ /*
+ * first time only
+ * - static constraint: no change across incremental scheduling calls
+diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
+index c76d3e37c6e1..403ace539b73 100644
+--- a/arch/x86/kernel/crash.c
++++ b/arch/x86/kernel/crash.c
+@@ -184,10 +184,9 @@ void native_machine_crash_shutdown(struct pt_regs *regs)
+ }
+
+ #ifdef CONFIG_KEXEC_FILE
+-static int get_nr_ram_ranges_callback(unsigned long start_pfn,
+- unsigned long nr_pfn, void *arg)
++static int get_nr_ram_ranges_callback(u64 start, u64 end, void *arg)
+ {
+- int *nr_ranges = arg;
++ unsigned int *nr_ranges = arg;
+
+ (*nr_ranges)++;
+ return 0;
+@@ -213,7 +212,7 @@ static void fill_up_crash_elf_data(struct crash_elf_data *ced,
+
+ ced->image = image;
+
+- walk_system_ram_range(0, -1, &nr_ranges,
++ walk_system_ram_res(0, -1, &nr_ranges,
+ get_nr_ram_ranges_callback);
+
+ ced->max_nr_ranges = nr_ranges;
+diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
+index 4bd6c197563d..6c9cb6073832 100644
+--- a/arch/x86/kernel/entry_64.S
++++ b/arch/x86/kernel/entry_64.S
+@@ -1393,7 +1393,18 @@ END(error_exit)
+ /* Runs on exception stack */
+ ENTRY(nmi)
+ INTR_FRAME
++ /*
++ * Fix up the exception frame if we're on Xen.
++ * PARAVIRT_ADJUST_EXCEPTION_FRAME is guaranteed to push at most
++ * one value to the stack on native, so it may clobber the rdx
++ * scratch slot, but it won't clobber any of the important
++ * slots past it.
++ *
++ * Xen is a different story, because the Xen frame itself overlaps
++ * the "NMI executing" variable.
++ */
+ PARAVIRT_ADJUST_EXCEPTION_FRAME
++
+ /*
+ * We allow breakpoints in NMIs. If a breakpoint occurs, then
+ * the iretq it performs will take us out of NMI context.
+@@ -1445,9 +1456,12 @@ ENTRY(nmi)
+ * we don't want to enable interrupts, because then we'll end
+ * up in an awkward situation in which IRQs are on but NMIs
+ * are off.
++ *
++ * We also must not push anything to the stack before switching
++ * stacks lest we corrupt the "NMI executing" variable.
+ */
+
+- SWAPGS
++ SWAPGS_UNSAFE_STACK
+ cld
+ movq %rsp, %rdx
+ movq PER_CPU_VAR(kernel_stack), %rsp
+diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
+index c614dd492f5f..1f316f066c49 100644
+--- a/arch/x86/kernel/paravirt.c
++++ b/arch/x86/kernel/paravirt.c
+@@ -41,10 +41,18 @@
+ #include <asm/timer.h>
+ #include <asm/special_insns.h>
+
+-/* nop stub */
+-void _paravirt_nop(void)
+-{
+-}
++/*
++ * nop stub, which must not clobber anything *including the stack* to
++ * avoid confusing the entry prologues.
++ */
++extern void _paravirt_nop(void);
++asm (".pushsection .entry.text, \"ax\"\n"
++ ".global _paravirt_nop\n"
++ "_paravirt_nop:\n\t"
++ "ret\n\t"
++ ".size _paravirt_nop, . - _paravirt_nop\n\t"
++ ".type _paravirt_nop, @function\n\t"
++ ".popsection");
+
+ /* identity function, which can be inlined */
+ u32 _paravirt_ident_32(u32 x)
+diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
+index 5e0bf57d9944..58e02d938218 100644
+--- a/arch/x86/kernel/process_64.c
++++ b/arch/x86/kernel/process_64.c
+@@ -499,27 +499,59 @@ void set_personality_ia32(bool x32)
+ }
+ EXPORT_SYMBOL_GPL(set_personality_ia32);
+
++/*
++ * Called from fs/proc with a reference on @p to find the function
++ * which called into schedule(). This needs to be done carefully
++ * because the task might wake up and we might look at a stack
++ * changing under us.
++ */
+ unsigned long get_wchan(struct task_struct *p)
+ {
+- unsigned long stack;
+- u64 fp, ip;
++ unsigned long start, bottom, top, sp, fp, ip;
+ int count = 0;
+
+ if (!p || p == current || p->state == TASK_RUNNING)
+ return 0;
+- stack = (unsigned long)task_stack_page(p);
+- if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE)
++
++ start = (unsigned long)task_stack_page(p);
++ if (!start)
++ return 0;
++
++ /*
++ * Layout of the stack page:
++ *
++ * ----------- topmax = start + THREAD_SIZE - sizeof(unsigned long)
++ * PADDING
++ * ----------- top = topmax - TOP_OF_KERNEL_STACK_PADDING
++ * stack
++ * ----------- bottom = start + sizeof(thread_info)
++ * thread_info
++ * ----------- start
++ *
++ * The tasks stack pointer points at the location where the
++ * framepointer is stored. The data on the stack is:
++ * ... IP FP ... IP FP
++ *
++ * We need to read FP and IP, so we need to adjust the upper
++ * bound by another unsigned long.
++ */
++ top = start + THREAD_SIZE - TOP_OF_KERNEL_STACK_PADDING;
++ top -= 2 * sizeof(unsigned long);
++ bottom = start + sizeof(struct thread_info);
++
++ sp = READ_ONCE(p->thread.sp);
++ if (sp < bottom || sp > top)
+ return 0;
+- fp = *(u64 *)(p->thread.sp);
++
++ fp = READ_ONCE(*(unsigned long *)sp);
+ do {
+- if (fp < (unsigned long)stack ||
+- fp >= (unsigned long)stack+THREAD_SIZE)
++ if (fp < bottom || fp > top)
+ return 0;
+- ip = *(u64 *)(fp+8);
++ ip = READ_ONCE(*(unsigned long *)(fp + sizeof(unsigned long)));
+ if (!in_sched_functions(ip))
+ return ip;
+- fp = *(u64 *)fp;
+- } while (count++ < 16);
++ fp = READ_ONCE(*(unsigned long *)fp);
++ } while (count++ < 16 && p->state != TASK_RUNNING);
+ return 0;
+ }
+
+diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
+index 505449700e0c..21187ebee7d0 100644
+--- a/arch/x86/kernel/tsc.c
++++ b/arch/x86/kernel/tsc.c
+@@ -21,6 +21,7 @@
+ #include <asm/hypervisor.h>
+ #include <asm/nmi.h>
+ #include <asm/x86_init.h>
++#include <asm/geode.h>
+
+ unsigned int __read_mostly cpu_khz; /* TSC clocks / usec, not used here */
+ EXPORT_SYMBOL(cpu_khz);
+@@ -1004,15 +1005,17 @@ EXPORT_SYMBOL_GPL(mark_tsc_unstable);
+
+ static void __init check_system_tsc_reliable(void)
+ {
+-#ifdef CONFIG_MGEODE_LX
+- /* RTSC counts during suspend */
++#if defined(CONFIG_MGEODEGX1) || defined(CONFIG_MGEODE_LX) || defined(CONFIG_X86_GENERIC)
++ if (is_geode_lx()) {
++ /* RTSC counts during suspend */
+ #define RTSC_SUSP 0x100
+- unsigned long res_low, res_high;
++ unsigned long res_low, res_high;
+
+- rdmsr_safe(MSR_GEODE_BUSCONT_CONF0, &res_low, &res_high);
+- /* Geode_LX - the OLPC CPU has a very reliable TSC */
+- if (res_low & RTSC_SUSP)
+- tsc_clocksource_reliable = 1;
++ rdmsr_safe(MSR_GEODE_BUSCONT_CONF0, &res_low, &res_high);
++ /* Geode_LX - the OLPC CPU has a very reliable TSC */
++ if (res_low & RTSC_SUSP)
++ tsc_clocksource_reliable = 1;
++ }
+ #endif
+ if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE))
+ tsc_clocksource_reliable = 1;
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 4911bf19122b..7858cd9acfe4 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -512,7 +512,7 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
+ struct vcpu_svm *svm = to_svm(vcpu);
+
+ if (svm->vmcb->control.next_rip != 0) {
+- WARN_ON(!static_cpu_has(X86_FEATURE_NRIPS));
++ WARN_ON_ONCE(!static_cpu_has(X86_FEATURE_NRIPS));
+ svm->next_rip = svm->vmcb->control.next_rip;
+ }
+
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 2d73807f0d31..bc3041e1abbc 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -6144,6 +6144,8 @@ static __init int hardware_setup(void)
+ memcpy(vmx_msr_bitmap_longmode_x2apic,
+ vmx_msr_bitmap_longmode, PAGE_SIZE);
+
++ set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
++
+ if (enable_apicv) {
+ for (msr = 0x800; msr <= 0x8ff; msr++)
+ vmx_disable_intercept_msr_read_x2apic(msr);
+diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
+index 3fba623e3ba5..f9977a7a9444 100644
+--- a/arch/x86/mm/init_64.c
++++ b/arch/x86/mm/init_64.c
+@@ -1132,7 +1132,7 @@ void mark_rodata_ro(void)
+ * has been zapped already via cleanup_highmem().
+ */
+ all_end = roundup((unsigned long)_brk_end, PMD_SIZE);
+- set_memory_nx(rodata_start, (all_end - rodata_start) >> PAGE_SHIFT);
++ set_memory_nx(text_end, (all_end - text_end) >> PAGE_SHIFT);
+
+ rodata_test();
+
+diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
+index 841ea05e1b02..477384985ac9 100644
+--- a/arch/x86/platform/efi/efi.c
++++ b/arch/x86/platform/efi/efi.c
+@@ -679,6 +679,70 @@ out:
+ }
+
+ /*
++ * Iterate the EFI memory map in reverse order because the regions
++ * will be mapped top-down. The end result is the same as if we had
++ * mapped things forward, but doesn't require us to change the
++ * existing implementation of efi_map_region().
++ */
++static inline void *efi_map_next_entry_reverse(void *entry)
++{
++ /* Initial call */
++ if (!entry)
++ return memmap.map_end - memmap.desc_size;
++
++ entry -= memmap.desc_size;
++ if (entry < memmap.map)
++ return NULL;
++
++ return entry;
++}
++
++/*
++ * efi_map_next_entry - Return the next EFI memory map descriptor
++ * @entry: Previous EFI memory map descriptor
++ *
++ * This is a helper function to iterate over the EFI memory map, which
++ * we do in different orders depending on the current configuration.
++ *
++ * To begin traversing the memory map @entry must be %NULL.
++ *
++ * Returns %NULL when we reach the end of the memory map.
++ */
++static void *efi_map_next_entry(void *entry)
++{
++ if (!efi_enabled(EFI_OLD_MEMMAP) && efi_enabled(EFI_64BIT)) {
++ /*
++ * Starting in UEFI v2.5 the EFI_PROPERTIES_TABLE
++ * config table feature requires us to map all entries
++ * in the same order as they appear in the EFI memory
++ * map. That is to say, entry N must have a lower
++ * virtual address than entry N+1. This is because the
++ * firmware toolchain leaves relative references in
++ * the code/data sections, which are split and become
++ * separate EFI memory regions. Mapping things
++ * out-of-order leads to the firmware accessing
++ * unmapped addresses.
++ *
++ * Since we need to map things this way whether or not
++ * the kernel actually makes use of
++ * EFI_PROPERTIES_TABLE, let's just switch to this
++ * scheme by default for 64-bit.
++ */
++ return efi_map_next_entry_reverse(entry);
++ }
++
++ /* Initial call */
++ if (!entry)
++ return memmap.map;
++
++ entry += memmap.desc_size;
++ if (entry >= memmap.map_end)
++ return NULL;
++
++ return entry;
++}
++
++/*
+ * Map the efi memory ranges of the runtime services and update new_mmap with
+ * virtual addresses.
+ */
+@@ -688,7 +752,8 @@ static void * __init efi_map_regions(int *count, int *pg_shift)
+ unsigned long left = 0;
+ efi_memory_desc_t *md;
+
+- for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
++ p = NULL;
++ while ((p = efi_map_next_entry(p))) {
+ md = p;
+ if (!(md->attribute & EFI_MEMORY_RUNTIME)) {
+ #ifdef CONFIG_X86_64
+diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
+index a671e837228d..0cc657160cb6 100644
+--- a/arch/x86/xen/enlighten.c
++++ b/arch/x86/xen/enlighten.c
+@@ -33,6 +33,10 @@
+ #include <linux/memblock.h>
+ #include <linux/edd.h>
+
++#ifdef CONFIG_KEXEC_CORE
++#include <linux/kexec.h>
++#endif
++
+ #include <xen/xen.h>
+ #include <xen/events.h>
+ #include <xen/interface/xen.h>
+@@ -1798,6 +1802,21 @@ static struct notifier_block xen_hvm_cpu_notifier = {
+ .notifier_call = xen_hvm_cpu_notify,
+ };
+
++#ifdef CONFIG_KEXEC_CORE
++static void xen_hvm_shutdown(void)
++{
++ native_machine_shutdown();
++ if (kexec_in_progress)
++ xen_reboot(SHUTDOWN_soft_reset);
++}
++
++static void xen_hvm_crash_shutdown(struct pt_regs *regs)
++{
++ native_machine_crash_shutdown(regs);
++ xen_reboot(SHUTDOWN_soft_reset);
++}
++#endif
++
+ static void __init xen_hvm_guest_init(void)
+ {
+ if (xen_pv_domain())
+@@ -1817,6 +1836,10 @@ static void __init xen_hvm_guest_init(void)
+ x86_init.irqs.intr_init = xen_init_IRQ;
+ xen_hvm_init_time_ops();
+ xen_hvm_init_mmu_ops();
++#ifdef CONFIG_KEXEC_CORE
++ machine_ops.shutdown = xen_hvm_shutdown;
++ machine_ops.crash_shutdown = xen_hvm_crash_shutdown;
++#endif
+ }
+ #endif
+
+diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
+index df0c66cb7ad3..fdba441457ec 100644
+--- a/drivers/base/cacheinfo.c
++++ b/drivers/base/cacheinfo.c
+@@ -148,7 +148,11 @@ static void cache_shared_cpu_map_remove(unsigned int cpu)
+
+ if (sibling == cpu) /* skip itself */
+ continue;
++
+ sib_cpu_ci = get_cpu_cacheinfo(sibling);
++ if (!sib_cpu_ci->info_list)
++ continue;
++
+ sib_leaf = sib_cpu_ci->info_list + index;
+ cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);
+ cpumask_clear_cpu(sibling, &this_leaf->shared_cpu_map);
+@@ -159,6 +163,9 @@ static void cache_shared_cpu_map_remove(unsigned int cpu)
+
+ static void free_cache_attributes(unsigned int cpu)
+ {
++ if (!per_cpu_cacheinfo(cpu))
++ return;
++
+ cache_shared_cpu_map_remove(cpu);
+
+ kfree(per_cpu_cacheinfo(cpu));
+@@ -514,8 +521,7 @@ static int cacheinfo_cpu_callback(struct notifier_block *nfb,
+ break;
+ case CPU_DEAD:
+ cache_remove_dev(cpu);
+- if (per_cpu_cacheinfo(cpu))
+- free_cache_attributes(cpu);
++ free_cache_attributes(cpu);
+ break;
+ }
+ return notifier_from_errno(rc);
+diff --git a/drivers/base/property.c b/drivers/base/property.c
+index 1d0b116cae95..0a60ef1500cd 100644
+--- a/drivers/base/property.c
++++ b/drivers/base/property.c
+@@ -26,9 +26,10 @@
+ */
+ void device_add_property_set(struct device *dev, struct property_set *pset)
+ {
+- if (pset)
+- pset->fwnode.type = FWNODE_PDATA;
++ if (!pset)
++ return;
+
++ pset->fwnode.type = FWNODE_PDATA;
+ set_secondary_fwnode(dev, &pset->fwnode);
+ }
+ EXPORT_SYMBOL_GPL(device_add_property_set);
+diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
+index 5799a0b9e6cc..c8941f39c919 100644
+--- a/drivers/base/regmap/regmap-debugfs.c
++++ b/drivers/base/regmap/regmap-debugfs.c
+@@ -32,8 +32,7 @@ static DEFINE_MUTEX(regmap_debugfs_early_lock);
+ /* Calculate the length of a fixed format */
+ static size_t regmap_calc_reg_len(int max_val, char *buf, size_t buf_size)
+ {
+- snprintf(buf, buf_size, "%x", max_val);
+- return strlen(buf);
++ return snprintf(NULL, 0, "%x", max_val);
+ }
+
+ static ssize_t regmap_name_read_file(struct file *file,
+@@ -432,7 +431,7 @@ static ssize_t regmap_access_read_file(struct file *file,
+ /* If we're in the region the user is trying to read */
+ if (p >= *ppos) {
+ /* ...but not beyond it */
+- if (buf_pos >= count - 1 - tot_len)
++ if (buf_pos + tot_len + 1 >= count)
+ break;
+
+ /* Format the register */
+diff --git a/drivers/clk/ti/clk-3xxx.c b/drivers/clk/ti/clk-3xxx.c
+index 757636d166cf..4ab28cfb8d2a 100644
+--- a/drivers/clk/ti/clk-3xxx.c
++++ b/drivers/clk/ti/clk-3xxx.c
+@@ -163,7 +163,6 @@ static struct ti_dt_clk omap3xxx_clks[] = {
+ DT_CLK(NULL, "gpio2_ick", "gpio2_ick"),
+ DT_CLK(NULL, "wdt3_ick", "wdt3_ick"),
+ DT_CLK(NULL, "uart3_ick", "uart3_ick"),
+- DT_CLK(NULL, "uart4_ick", "uart4_ick"),
+ DT_CLK(NULL, "gpt9_ick", "gpt9_ick"),
+ DT_CLK(NULL, "gpt8_ick", "gpt8_ick"),
+ DT_CLK(NULL, "gpt7_ick", "gpt7_ick"),
+@@ -308,6 +307,7 @@ static struct ti_dt_clk am35xx_clks[] = {
+ static struct ti_dt_clk omap36xx_clks[] = {
+ DT_CLK(NULL, "omap_192m_alwon_fck", "omap_192m_alwon_fck"),
+ DT_CLK(NULL, "uart4_fck", "uart4_fck"),
++ DT_CLK(NULL, "uart4_ick", "uart4_ick"),
+ { .node_name = NULL },
+ };
+
+diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
+index bab67db54b7e..663045ce6fac 100644
+--- a/drivers/cpufreq/cpufreq-dt.c
++++ b/drivers/cpufreq/cpufreq-dt.c
+@@ -255,7 +255,8 @@ static int cpufreq_init(struct cpufreq_policy *policy)
+ rcu_read_unlock();
+
+ tol_uV = opp_uV * priv->voltage_tolerance / 100;
+- if (regulator_is_supported_voltage(cpu_reg, opp_uV,
++ if (regulator_is_supported_voltage(cpu_reg,
++ opp_uV - tol_uV,
+ opp_uV + tol_uV)) {
+ if (opp_uV < min_uV)
+ min_uV = opp_uV;
+diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
+index 6f9d27f9001c..e8d16997c5cb 100644
+--- a/drivers/cpufreq/intel_pstate.c
++++ b/drivers/cpufreq/intel_pstate.c
+@@ -48,9 +48,9 @@ static inline int32_t mul_fp(int32_t x, int32_t y)
+ return ((int64_t)x * (int64_t)y) >> FRAC_BITS;
+ }
+
+-static inline int32_t div_fp(int32_t x, int32_t y)
++static inline int32_t div_fp(s64 x, s64 y)
+ {
+- return div_s64((int64_t)x << FRAC_BITS, y);
++ return div64_s64((int64_t)x << FRAC_BITS, y);
+ }
+
+ static inline int ceiling_fp(int32_t x)
+@@ -795,7 +795,7 @@ static inline void intel_pstate_set_sample_time(struct cpudata *cpu)
+ static inline int32_t intel_pstate_get_scaled_busy(struct cpudata *cpu)
+ {
+ int32_t core_busy, max_pstate, current_pstate, sample_ratio;
+- u32 duration_us;
++ s64 duration_us;
+ u32 sample_time;
+
+ /*
+@@ -822,8 +822,8 @@ static inline int32_t intel_pstate_get_scaled_busy(struct cpudata *cpu)
+ * to adjust our busyness.
+ */
+ sample_time = pid_params.sample_rate_ms * USEC_PER_MSEC;
+- duration_us = (u32) ktime_us_delta(cpu->sample.time,
+- cpu->last_sample_time);
++ duration_us = ktime_us_delta(cpu->sample.time,
++ cpu->last_sample_time);
+ if (duration_us > sample_time * 3) {
+ sample_ratio = div_fp(int_tofp(sample_time),
+ int_tofp(duration_us));
+diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
+index 1022c2e1a2b0..9e504d3b0d4f 100644
+--- a/drivers/dma/dw/core.c
++++ b/drivers/dma/dw/core.c
+@@ -1591,7 +1591,6 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
+ INIT_LIST_HEAD(&dw->dma.channels);
+ for (i = 0; i < nr_channels; i++) {
+ struct dw_dma_chan *dwc = &dw->chan[i];
+- int r = nr_channels - i - 1;
+
+ dwc->chan.device = &dw->dma;
+ dma_cookie_init(&dwc->chan);
+@@ -1603,7 +1602,7 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
+
+ /* 7 is highest priority & 0 is lowest. */
+ if (pdata->chan_priority == CHAN_PRIORITY_ASCENDING)
+- dwc->priority = r;
++ dwc->priority = nr_channels - i - 1;
+ else
+ dwc->priority = i;
+
+@@ -1622,6 +1621,7 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
+ /* Hardware configuration */
+ if (autocfg) {
+ unsigned int dwc_params;
++ unsigned int r = DW_DMA_MAX_NR_CHANNELS - i - 1;
+ void __iomem *addr = chip->regs + r * sizeof(u32);
+
+ dwc_params = dma_read_byaddr(addr, DWC_PARAMS);
+diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
+index e29560e6b40b..950c87f5d279 100644
+--- a/drivers/firmware/efi/libstub/arm-stub.c
++++ b/drivers/firmware/efi/libstub/arm-stub.c
+@@ -13,6 +13,7 @@
+ */
+
+ #include <linux/efi.h>
++#include <linux/sort.h>
+ #include <asm/efi.h>
+
+ #include "efistub.h"
+@@ -305,6 +306,44 @@ fail:
+ */
+ #define EFI_RT_VIRTUAL_BASE 0x40000000
+
++static int cmp_mem_desc(const void *l, const void *r)
++{
++ const efi_memory_desc_t *left = l, *right = r;
++
++ return (left->phys_addr > right->phys_addr) ? 1 : -1;
++}
++
++/*
++ * Returns whether region @left ends exactly where region @right starts,
++ * or false if either argument is NULL.
++ */
++static bool regions_are_adjacent(efi_memory_desc_t *left,
++ efi_memory_desc_t *right)
++{
++ u64 left_end;
++
++ if (left == NULL || right == NULL)
++ return false;
++
++ left_end = left->phys_addr + left->num_pages * EFI_PAGE_SIZE;
++
++ return left_end == right->phys_addr;
++}
++
++/*
++ * Returns whether region @left and region @right have compatible memory type
++ * mapping attributes, and are both EFI_MEMORY_RUNTIME regions.
++ */
++static bool regions_have_compatible_memory_type_attrs(efi_memory_desc_t *left,
++ efi_memory_desc_t *right)
++{
++ static const u64 mem_type_mask = EFI_MEMORY_WB | EFI_MEMORY_WT |
++ EFI_MEMORY_WC | EFI_MEMORY_UC |
++ EFI_MEMORY_RUNTIME;
++
++ return ((left->attribute ^ right->attribute) & mem_type_mask) == 0;
++}
++
+ /*
+ * efi_get_virtmap() - create a virtual mapping for the EFI memory map
+ *
+@@ -317,33 +356,52 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
+ int *count)
+ {
+ u64 efi_virt_base = EFI_RT_VIRTUAL_BASE;
+- efi_memory_desc_t *out = runtime_map;
++ efi_memory_desc_t *in, *prev = NULL, *out = runtime_map;
+ int l;
+
+- for (l = 0; l < map_size; l += desc_size) {
+- efi_memory_desc_t *in = (void *)memory_map + l;
++ /*
++ * To work around potential issues with the Properties Table feature
++ * introduced in UEFI 2.5, which may split PE/COFF executable images
++ * in memory into several RuntimeServicesCode and RuntimeServicesData
++ * regions, we need to preserve the relative offsets between adjacent
++ * EFI_MEMORY_RUNTIME regions with the same memory type attributes.
++ * The easiest way to find adjacent regions is to sort the memory map
++ * before traversing it.
++ */
++ sort(memory_map, map_size / desc_size, desc_size, cmp_mem_desc, NULL);
++
++ for (l = 0; l < map_size; l += desc_size, prev = in) {
+ u64 paddr, size;
+
++ in = (void *)memory_map + l;
+ if (!(in->attribute & EFI_MEMORY_RUNTIME))
+ continue;
+
++ paddr = in->phys_addr;
++ size = in->num_pages * EFI_PAGE_SIZE;
++
+ /*
+ * Make the mapping compatible with 64k pages: this allows
+ * a 4k page size kernel to kexec a 64k page size kernel and
+ * vice versa.
+ */
+- paddr = round_down(in->phys_addr, SZ_64K);
+- size = round_up(in->num_pages * EFI_PAGE_SIZE +
+- in->phys_addr - paddr, SZ_64K);
+-
+- /*
+- * Avoid wasting memory on PTEs by choosing a virtual base that
+- * is compatible with section mappings if this region has the
+- * appropriate size and physical alignment. (Sections are 2 MB
+- * on 4k granule kernels)
+- */
+- if (IS_ALIGNED(in->phys_addr, SZ_2M) && size >= SZ_2M)
+- efi_virt_base = round_up(efi_virt_base, SZ_2M);
++ if (!regions_are_adjacent(prev, in) ||
++ !regions_have_compatible_memory_type_attrs(prev, in)) {
++
++ paddr = round_down(in->phys_addr, SZ_64K);
++ size += in->phys_addr - paddr;
++
++ /*
++ * Avoid wasting memory on PTEs by choosing a virtual
++ * base that is compatible with section mappings if this
++ * region has the appropriate size and physical
++ * alignment. (Sections are 2 MB on 4k granule kernels)
++ */
++ if (IS_ALIGNED(in->phys_addr, SZ_2M) && size >= SZ_2M)
++ efi_virt_base = round_up(efi_virt_base, SZ_2M);
++ else
++ efi_virt_base = round_up(efi_virt_base, SZ_64K);
++ }
+
+ in->virt_addr = efi_virt_base + in->phys_addr - paddr;
+ efi_virt_base += size;
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index b0487c9f018c..7f467fdc9107 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -804,8 +804,6 @@ static void drm_dp_destroy_mst_branch_device(struct kref *kref)
+ struct drm_dp_mst_port *port, *tmp;
+ bool wake_tx = false;
+
+- cancel_work_sync(&mstb->mgr->work);
+-
+ /*
+ * destroy all ports - don't need lock
+ * as there are no more references to the mst branch
+@@ -1977,6 +1975,8 @@ void drm_dp_mst_topology_mgr_suspend(struct drm_dp_mst_topology_mgr *mgr)
+ drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL,
+ DP_MST_EN | DP_UPSTREAM_IS_SRC);
+ mutex_unlock(&mgr->lock);
++ flush_work(&mgr->work);
++ flush_work(&mgr->destroy_connector_work);
+ }
+ EXPORT_SYMBOL(drm_dp_mst_topology_mgr_suspend);
+
+@@ -2730,6 +2730,7 @@ EXPORT_SYMBOL(drm_dp_mst_topology_mgr_init);
+ */
+ void drm_dp_mst_topology_mgr_destroy(struct drm_dp_mst_topology_mgr *mgr)
+ {
++ flush_work(&mgr->work);
+ flush_work(&mgr->destroy_connector_work);
+ mutex_lock(&mgr->payload_lock);
+ kfree(mgr->payloads);
+diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c
+index f861361a635e..4924d381b664 100644
+--- a/drivers/gpu/drm/drm_lock.c
++++ b/drivers/gpu/drm/drm_lock.c
+@@ -61,6 +61,9 @@ int drm_legacy_lock(struct drm_device *dev, void *data,
+ struct drm_master *master = file_priv->master;
+ int ret = 0;
+
++ if (drm_core_check_feature(dev, DRIVER_MODESET))
++ return -EINVAL;
++
+ ++file_priv->lock_count;
+
+ if (lock->context == DRM_KERNEL_CONTEXT) {
+@@ -153,6 +156,9 @@ int drm_legacy_unlock(struct drm_device *dev, void *data, struct drm_file *file_
+ struct drm_lock *lock = data;
+ struct drm_master *master = file_priv->master;
+
++ if (drm_core_check_feature(dev, DRIVER_MODESET))
++ return -EINVAL;
++
+ if (lock->context == DRM_KERNEL_CONTEXT) {
+ DRM_ERROR("Process %d using kernel context %d\n",
+ task_pid_nr(current), lock->context);
+diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
+index c684085cb56a..fadf9865709e 100644
+--- a/drivers/gpu/drm/i915/intel_bios.c
++++ b/drivers/gpu/drm/i915/intel_bios.c
+@@ -41,7 +41,7 @@ find_section(struct bdb_header *bdb, int section_id)
+ {
+ u8 *base = (u8 *)bdb;
+ int index = 0;
+- u16 total, current_size;
++ u32 total, current_size;
+ u8 current_id;
+
+ /* skip to first section */
+@@ -56,6 +56,10 @@ find_section(struct bdb_header *bdb, int section_id)
+ current_size = *((u16 *)(base + index));
+ index += 2;
+
++ /* The MIPI Sequence Block v3+ has a separate size field. */
++ if (current_id == BDB_MIPI_SEQUENCE && *(base + index) >= 3)
++ current_size = *((const u32 *)(base + index + 1));
++
+ if (index + current_size > total)
+ return NULL;
+
+@@ -845,6 +849,12 @@ parse_mipi(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
+ return;
+ }
+
++ /* Fail gracefully for forward incompatible sequence block. */
++ if (sequence->version >= 3) {
++ DRM_ERROR("Unable to parse MIPI Sequence Block v3+\n");
++ return;
++ }
++
+ DRM_DEBUG_DRIVER("Found MIPI sequence block\n");
+
+ block_size = get_blocksize(sequence);
+diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
+index 32248791bc4b..52921a871230 100644
+--- a/drivers/gpu/drm/qxl/qxl_display.c
++++ b/drivers/gpu/drm/qxl/qxl_display.c
+@@ -618,7 +618,7 @@ static int qxl_crtc_mode_set(struct drm_crtc *crtc,
+ adjusted_mode->hdisplay,
+ adjusted_mode->vdisplay);
+
+- if (qcrtc->index == 0)
++ if (bo->is_primary == false)
+ recreate_primary = true;
+
+ if (bo->surf.stride * bo->surf.height > qdev->vram_size) {
+@@ -886,13 +886,15 @@ static enum drm_connector_status qxl_conn_detect(
+ drm_connector_to_qxl_output(connector);
+ struct drm_device *ddev = connector->dev;
+ struct qxl_device *qdev = ddev->dev_private;
+- int connected;
++ bool connected = false;
+
+ /* The first monitor is always connected */
+- connected = (output->index == 0) ||
+- (qdev->client_monitors_config &&
+- qdev->client_monitors_config->count > output->index &&
+- qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]));
++ if (!qdev->client_monitors_config) {
++ if (output->index == 0)
++ connected = true;
++ } else
++ connected = qdev->client_monitors_config->count > output->index &&
++ qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
+
+ DRM_DEBUG("#%d connected: %d\n", output->index, connected);
+ if (!connected)
+diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
+index dd39f434b4a7..b4ff4c134fbb 100644
+--- a/drivers/gpu/drm/radeon/atombios_encoders.c
++++ b/drivers/gpu/drm/radeon/atombios_encoders.c
+@@ -1624,8 +1624,9 @@ radeon_atom_encoder_dpms_avivo(struct drm_encoder *encoder, int mode)
+ } else
+ atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+- args.ucAction = ATOM_LCD_BLON;
+- atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
++ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
++
++ atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
+ }
+ break;
+ case DRM_MODE_DPMS_STANDBY:
+@@ -1706,8 +1707,7 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode)
+ atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0);
+ }
+ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
+- atombios_dig_transmitter_setup(encoder,
+- ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
++ atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
+ if (ext_encoder)
+ atombios_external_encoder_setup(encoder, ext_encoder, ATOM_ENABLE);
+ break;
+diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
+index bd1c99deac71..2aaedbe0b023 100644
+--- a/drivers/hwmon/nct6775.c
++++ b/drivers/hwmon/nct6775.c
+@@ -354,6 +354,10 @@ static const u16 NCT6775_REG_TEMP_CRIT[ARRAY_SIZE(nct6775_temp_label) - 1]
+
+ /* NCT6776 specific data */
+
++/* STEP_UP_TIME and STEP_DOWN_TIME regs are swapped for all chips but NCT6775 */
++#define NCT6776_REG_FAN_STEP_UP_TIME NCT6775_REG_FAN_STEP_DOWN_TIME
++#define NCT6776_REG_FAN_STEP_DOWN_TIME NCT6775_REG_FAN_STEP_UP_TIME
++
+ static const s8 NCT6776_ALARM_BITS[] = {
+ 0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
+ 17, -1, -1, -1, -1, -1, -1, /* in8..in14 */
+@@ -3528,8 +3532,8 @@ static int nct6775_probe(struct platform_device *pdev)
+ data->REG_FAN_PULSES = NCT6776_REG_FAN_PULSES;
+ data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
+ data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
+- data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
+- data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
++ data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
++ data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
+ data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
+ data->REG_PWM[0] = NCT6775_REG_PWM;
+ data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
+@@ -3600,8 +3604,8 @@ static int nct6775_probe(struct platform_device *pdev)
+ data->REG_FAN_PULSES = NCT6779_REG_FAN_PULSES;
+ data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
+ data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
+- data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
+- data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
++ data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
++ data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
+ data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
+ data->REG_PWM[0] = NCT6775_REG_PWM;
+ data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
+@@ -3677,8 +3681,8 @@ static int nct6775_probe(struct platform_device *pdev)
+ data->REG_FAN_PULSES = NCT6779_REG_FAN_PULSES;
+ data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
+ data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
+- data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
+- data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
++ data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
++ data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
+ data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
+ data->REG_PWM[0] = NCT6775_REG_PWM;
+ data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
+diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
+index 575a072d765f..c32a934f7693 100644
+--- a/drivers/infiniband/ulp/isert/ib_isert.c
++++ b/drivers/infiniband/ulp/isert/ib_isert.c
+@@ -2996,9 +2996,16 @@ isert_get_dataout(struct iscsi_conn *conn, struct iscsi_cmd *cmd, bool recovery)
+ static int
+ isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
+ {
+- int ret;
++ struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
++ int ret = 0;
+
+ switch (state) {
++ case ISTATE_REMOVE:
++ spin_lock_bh(&conn->cmd_lock);
++ list_del_init(&cmd->i_conn_node);
++ spin_unlock_bh(&conn->cmd_lock);
++ isert_put_cmd(isert_cmd, true);
++ break;
+ case ISTATE_SEND_NOPIN_WANT_RESPONSE:
+ ret = isert_put_nopin(cmd, conn, false);
+ break;
+@@ -3363,6 +3370,41 @@ isert_wait4flush(struct isert_conn *isert_conn)
+ wait_for_completion(&isert_conn->wait_comp_err);
+ }
+
++/**
++ * isert_put_unsol_pending_cmds() - Drop commands waiting for
++ * unsolicitate dataout
++ * @conn: iscsi connection
++ *
++ * We might still have commands that are waiting for unsolicited
++ * dataouts messages. We must put the extra reference on those
++ * before blocking on the target_wait_for_session_cmds
++ */
++static void
++isert_put_unsol_pending_cmds(struct iscsi_conn *conn)
++{
++ struct iscsi_cmd *cmd, *tmp;
++ static LIST_HEAD(drop_cmd_list);
++
++ spin_lock_bh(&conn->cmd_lock);
++ list_for_each_entry_safe(cmd, tmp, &conn->conn_cmd_list, i_conn_node) {
++ if ((cmd->cmd_flags & ICF_NON_IMMEDIATE_UNSOLICITED_DATA) &&
++ (cmd->write_data_done < conn->sess->sess_ops->FirstBurstLength) &&
++ (cmd->write_data_done < cmd->se_cmd.data_length))
++ list_move_tail(&cmd->i_conn_node, &drop_cmd_list);
++ }
++ spin_unlock_bh(&conn->cmd_lock);
++
++ list_for_each_entry_safe(cmd, tmp, &drop_cmd_list, i_conn_node) {
++ list_del_init(&cmd->i_conn_node);
++ if (cmd->i_state != ISTATE_REMOVE) {
++ struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
++
++ isert_info("conn %p dropping cmd %p\n", conn, cmd);
++ isert_put_cmd(isert_cmd, true);
++ }
++ }
++}
++
+ static void isert_wait_conn(struct iscsi_conn *conn)
+ {
+ struct isert_conn *isert_conn = conn->context;
+@@ -3381,8 +3423,9 @@ static void isert_wait_conn(struct iscsi_conn *conn)
+ isert_conn_terminate(isert_conn);
+ mutex_unlock(&isert_conn->mutex);
+
+- isert_wait4cmds(conn);
+ isert_wait4flush(isert_conn);
++ isert_put_unsol_pending_cmds(conn);
++ isert_wait4cmds(conn);
+ isert_wait4logout(isert_conn);
+
+ queue_work(isert_release_wq, &isert_conn->release_work);
+diff --git a/drivers/irqchip/irq-atmel-aic5.c b/drivers/irqchip/irq-atmel-aic5.c
+index a2e8c3f876cb..c2c578f0b268 100644
+--- a/drivers/irqchip/irq-atmel-aic5.c
++++ b/drivers/irqchip/irq-atmel-aic5.c
+@@ -88,28 +88,36 @@ static void aic5_mask(struct irq_data *d)
+ {
+ struct irq_domain *domain = d->domain;
+ struct irq_domain_chip_generic *dgc = domain->gc;
+- struct irq_chip_generic *gc = dgc->gc[0];
++ struct irq_chip_generic *bgc = dgc->gc[0];
++ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+
+- /* Disable interrupt on AIC5 */
+- irq_gc_lock(gc);
++ /*
++ * Disable interrupt on AIC5. We always take the lock of the
++ * first irq chip as all chips share the same registers.
++ */
++ irq_gc_lock(bgc);
+ irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
+ irq_reg_writel(gc, 1, AT91_AIC5_IDCR);
+ gc->mask_cache &= ~d->mask;
+- irq_gc_unlock(gc);
++ irq_gc_unlock(bgc);
+ }
+
+ static void aic5_unmask(struct irq_data *d)
+ {
+ struct irq_domain *domain = d->domain;
+ struct irq_domain_chip_generic *dgc = domain->gc;
+- struct irq_chip_generic *gc = dgc->gc[0];
++ struct irq_chip_generic *bgc = dgc->gc[0];
++ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+
+- /* Enable interrupt on AIC5 */
+- irq_gc_lock(gc);
++ /*
++ * Enable interrupt on AIC5. We always take the lock of the
++ * first irq chip as all chips share the same registers.
++ */
++ irq_gc_lock(bgc);
+ irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
+ irq_reg_writel(gc, 1, AT91_AIC5_IECR);
+ gc->mask_cache |= d->mask;
+- irq_gc_unlock(gc);
++ irq_gc_unlock(bgc);
+ }
+
+ static int aic5_retrigger(struct irq_data *d)
+diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
+index c00e2db351ba..9a791dd52199 100644
+--- a/drivers/irqchip/irq-gic-v3-its.c
++++ b/drivers/irqchip/irq-gic-v3-its.c
+@@ -921,8 +921,10 @@ retry_baser:
+ * non-cacheable as well.
+ */
+ shr = tmp & GITS_BASER_SHAREABILITY_MASK;
+- if (!shr)
++ if (!shr) {
+ cache = GITS_BASER_nC;
++ __flush_dcache_area(base, alloc_size);
++ }
+ goto retry_baser;
+ }
+
+@@ -1163,6 +1165,8 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
+ return NULL;
+ }
+
++ __flush_dcache_area(itt, sz);
++
+ dev->its = its;
+ dev->itt = itt;
+ dev->nr_ites = nr_ites;
+diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
+index 7fb2a19ac649..557f8a53a062 100644
+--- a/drivers/leds/led-class.c
++++ b/drivers/leds/led-class.c
+@@ -223,12 +223,15 @@ static int led_classdev_next_name(const char *init_name, char *name,
+ {
+ unsigned int i = 0;
+ int ret = 0;
++ struct device *dev;
+
+ strlcpy(name, init_name, len);
+
+- while (class_find_device(leds_class, NULL, name, match_name) &&
+- (ret < len))
++ while ((ret < len) &&
++ (dev = class_find_device(leds_class, NULL, name, match_name))) {
++ put_device(dev);
+ ret = snprintf(name, len, "%s_%u", init_name, ++i);
++ }
+
+ if (ret >= len)
+ return -ENOMEM;
+diff --git a/drivers/macintosh/windfarm_core.c b/drivers/macintosh/windfarm_core.c
+index 3ee198b65843..cc7ece1712b5 100644
+--- a/drivers/macintosh/windfarm_core.c
++++ b/drivers/macintosh/windfarm_core.c
+@@ -435,7 +435,7 @@ int wf_unregister_client(struct notifier_block *nb)
+ {
+ mutex_lock(&wf_lock);
+ blocking_notifier_chain_unregister(&wf_client_list, nb);
+- wf_client_count++;
++ wf_client_count--;
+ if (wf_client_count == 0)
+ wf_stop_thread();
+ mutex_unlock(&wf_lock);
+diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
+index c90118e90708..a7621a258936 100644
+--- a/drivers/md/bitmap.c
++++ b/drivers/md/bitmap.c
+@@ -2000,7 +2000,8 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
+ if (bitmap->mddev->bitmap_info.offset || bitmap->mddev->bitmap_info.file)
+ ret = bitmap_storage_alloc(&store, chunks,
+ !bitmap->mddev->bitmap_info.external,
+- bitmap->cluster_slot);
++ mddev_is_clustered(bitmap->mddev)
++ ? bitmap->cluster_slot : 0);
+ if (ret)
+ goto err;
+
+diff --git a/drivers/md/dm-cache-policy-cleaner.c b/drivers/md/dm-cache-policy-cleaner.c
+index 004e463c9423..8308f4b434ec 100644
+--- a/drivers/md/dm-cache-policy-cleaner.c
++++ b/drivers/md/dm-cache-policy-cleaner.c
+@@ -435,7 +435,7 @@ static struct dm_cache_policy *wb_create(dm_cblock_t cache_size,
+ static struct dm_cache_policy_type wb_policy_type = {
+ .name = "cleaner",
+ .version = {1, 0, 0},
+- .hint_size = 0,
++ .hint_size = 4,
+ .owner = THIS_MODULE,
+ .create = wb_create
+ };
+diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
+index 5503e43e5f28..049282e6482f 100644
+--- a/drivers/md/dm-crypt.c
++++ b/drivers/md/dm-crypt.c
+@@ -955,7 +955,8 @@ static void crypt_free_buffer_pages(struct crypt_config *cc, struct bio *clone);
+
+ /*
+ * Generate a new unfragmented bio with the given size
+- * This should never violate the device limitations
++ * This should never violate the device limitations (but only because
++ * max_segment_size is being constrained to PAGE_SIZE).
+ *
+ * This function may be called concurrently. If we allocate from the mempool
+ * concurrently, there is a possibility of deadlock. For example, if we have
+@@ -2040,9 +2041,20 @@ static int crypt_iterate_devices(struct dm_target *ti,
+ return fn(ti, cc->dev, cc->start, ti->len, data);
+ }
+
++static void crypt_io_hints(struct dm_target *ti, struct queue_limits *limits)
++{
++ /*
++ * Unfortunate constraint that is required to avoid the potential
++ * for exceeding underlying device's max_segments limits -- due to
++ * crypt_alloc_buffer() possibly allocating pages for the encryption
++ * bio that are not as physically contiguous as the original bio.
++ */
++ limits->max_segment_size = PAGE_SIZE;
++}
++
+ static struct target_type crypt_target = {
+ .name = "crypt",
+- .version = {1, 14, 0},
++ .version = {1, 14, 1},
+ .module = THIS_MODULE,
+ .ctr = crypt_ctr,
+ .dtr = crypt_dtr,
+@@ -2054,6 +2066,7 @@ static struct target_type crypt_target = {
+ .message = crypt_message,
+ .merge = crypt_merge,
+ .iterate_devices = crypt_iterate_devices,
++ .io_hints = crypt_io_hints,
+ };
+
+ static int __init dm_crypt_init(void)
+diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
+index 88e4c7f24986..2c1f2e13719e 100644
+--- a/drivers/md/dm-raid.c
++++ b/drivers/md/dm-raid.c
+@@ -327,8 +327,7 @@ static int validate_region_size(struct raid_set *rs, unsigned long region_size)
+ */
+ if (min_region_size > (1 << 13)) {
+ /* If not a power of 2, make it the next power of 2 */
+- if (min_region_size & (min_region_size - 1))
+- region_size = 1 << fls(region_size);
++ region_size = roundup_pow_of_two(min_region_size);
+ DMINFO("Choosing default region size of %lu sectors",
+ region_size);
+ } else {
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index 697f34fba06b..8b72ceee0f61 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -2925,8 +2925,6 @@ static void __dm_destroy(struct mapped_device *md, bool wait)
+
+ might_sleep();
+
+- map = dm_get_live_table(md, &srcu_idx);
+-
+ spin_lock(&_minor_lock);
+ idr_replace(&_minor_idr, MINOR_ALLOCED, MINOR(disk_devt(dm_disk(md))));
+ set_bit(DMF_FREEING, &md->flags);
+@@ -2940,14 +2938,14 @@ static void __dm_destroy(struct mapped_device *md, bool wait)
+ * do not race with internal suspend.
+ */
+ mutex_lock(&md->suspend_lock);
++ map = dm_get_live_table(md, &srcu_idx);
+ if (!dm_suspended_md(md)) {
+ dm_table_presuspend_targets(map);
+ dm_table_postsuspend_targets(map);
+ }
+- mutex_unlock(&md->suspend_lock);
+-
+ /* dm_put_live_table must be before msleep, otherwise deadlock is possible */
+ dm_put_live_table(md, srcu_idx);
++ mutex_unlock(&md->suspend_lock);
+
+ /*
+ * Rare, but there may be I/O requests still going to complete,
+diff --git a/drivers/md/persistent-data/dm-btree-internal.h b/drivers/md/persistent-data/dm-btree-internal.h
+index bf2b80d5c470..8731b6ea026b 100644
+--- a/drivers/md/persistent-data/dm-btree-internal.h
++++ b/drivers/md/persistent-data/dm-btree-internal.h
+@@ -138,4 +138,10 @@ int lower_bound(struct btree_node *n, uint64_t key);
+
+ extern struct dm_block_validator btree_node_validator;
+
++/*
++ * Value type for upper levels of multi-level btrees.
++ */
++extern void init_le64_type(struct dm_transaction_manager *tm,
++ struct dm_btree_value_type *vt);
++
+ #endif /* DM_BTREE_INTERNAL_H */
+diff --git a/drivers/md/persistent-data/dm-btree-remove.c b/drivers/md/persistent-data/dm-btree-remove.c
+index a03178e91a79..7c0d75547ccf 100644
+--- a/drivers/md/persistent-data/dm-btree-remove.c
++++ b/drivers/md/persistent-data/dm-btree-remove.c
+@@ -544,14 +544,6 @@ static int remove_raw(struct shadow_spine *s, struct dm_btree_info *info,
+ return r;
+ }
+
+-static struct dm_btree_value_type le64_type = {
+- .context = NULL,
+- .size = sizeof(__le64),
+- .inc = NULL,
+- .dec = NULL,
+- .equal = NULL
+-};
+-
+ int dm_btree_remove(struct dm_btree_info *info, dm_block_t root,
+ uint64_t *keys, dm_block_t *new_root)
+ {
+@@ -559,12 +551,14 @@ int dm_btree_remove(struct dm_btree_info *info, dm_block_t root,
+ int index = 0, r = 0;
+ struct shadow_spine spine;
+ struct btree_node *n;
++ struct dm_btree_value_type le64_vt;
+
++ init_le64_type(info->tm, &le64_vt);
+ init_shadow_spine(&spine, info);
+ for (level = 0; level < info->levels; level++) {
+ r = remove_raw(&spine, info,
+ (level == last_level ?
+- &info->value_type : &le64_type),
++ &info->value_type : &le64_vt),
+ root, keys[level], (unsigned *)&index);
+ if (r < 0)
+ break;
+diff --git a/drivers/md/persistent-data/dm-btree-spine.c b/drivers/md/persistent-data/dm-btree-spine.c
+index 1b5e13ec7f96..0dee514ba4c5 100644
+--- a/drivers/md/persistent-data/dm-btree-spine.c
++++ b/drivers/md/persistent-data/dm-btree-spine.c
+@@ -249,3 +249,40 @@ int shadow_root(struct shadow_spine *s)
+ {
+ return s->root;
+ }
++
++static void le64_inc(void *context, const void *value_le)
++{
++ struct dm_transaction_manager *tm = context;
++ __le64 v_le;
++
++ memcpy(&v_le, value_le, sizeof(v_le));
++ dm_tm_inc(tm, le64_to_cpu(v_le));
++}
++
++static void le64_dec(void *context, const void *value_le)
++{
++ struct dm_transaction_manager *tm = context;
++ __le64 v_le;
++
++ memcpy(&v_le, value_le, sizeof(v_le));
++ dm_tm_dec(tm, le64_to_cpu(v_le));
++}
++
++static int le64_equal(void *context, const void *value1_le, const void *value2_le)
++{
++ __le64 v1_le, v2_le;
++
++ memcpy(&v1_le, value1_le, sizeof(v1_le));
++ memcpy(&v2_le, value2_le, sizeof(v2_le));
++ return v1_le == v2_le;
++}
++
++void init_le64_type(struct dm_transaction_manager *tm,
++ struct dm_btree_value_type *vt)
++{
++ vt->context = tm;
++ vt->size = sizeof(__le64);
++ vt->inc = le64_inc;
++ vt->dec = le64_dec;
++ vt->equal = le64_equal;
++}
+diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c
+index fdd3793e22f9..c7726cebc495 100644
+--- a/drivers/md/persistent-data/dm-btree.c
++++ b/drivers/md/persistent-data/dm-btree.c
+@@ -667,12 +667,7 @@ static int insert(struct dm_btree_info *info, dm_block_t root,
+ struct btree_node *n;
+ struct dm_btree_value_type le64_type;
+
+- le64_type.context = NULL;
+- le64_type.size = sizeof(__le64);
+- le64_type.inc = NULL;
+- le64_type.dec = NULL;
+- le64_type.equal = NULL;
+-
++ init_le64_type(info->tm, &le64_type);
+ init_shadow_spine(&spine, info);
+
+ for (level = 0; level < (info->levels - 1); level++) {
+diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
+index efb654eb5399..0875e5e7e09a 100644
+--- a/drivers/md/raid0.c
++++ b/drivers/md/raid0.c
+@@ -83,7 +83,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
+ char b[BDEVNAME_SIZE];
+ char b2[BDEVNAME_SIZE];
+ struct r0conf *conf = kzalloc(sizeof(*conf), GFP_KERNEL);
+- bool discard_supported = false;
++ unsigned short blksize = 512;
+
+ if (!conf)
+ return -ENOMEM;
+@@ -98,6 +98,9 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
+ sector_div(sectors, mddev->chunk_sectors);
+ rdev1->sectors = sectors * mddev->chunk_sectors;
+
++ blksize = max(blksize, queue_logical_block_size(
++ rdev1->bdev->bd_disk->queue));
++
+ rdev_for_each(rdev2, mddev) {
+ pr_debug("md/raid0:%s: comparing %s(%llu)"
+ " with %s(%llu)\n",
+@@ -134,6 +137,18 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
+ }
+ pr_debug("md/raid0:%s: FINAL %d zones\n",
+ mdname(mddev), conf->nr_strip_zones);
++ /*
++ * now since we have the hard sector sizes, we can make sure
++ * chunk size is a multiple of that sector size
++ */
++ if ((mddev->chunk_sectors << 9) % blksize) {
++ printk(KERN_ERR "md/raid0:%s: chunk_size of %d not multiple of block size %d\n",
++ mdname(mddev),
++ mddev->chunk_sectors << 9, blksize);
++ err = -EINVAL;
++ goto abort;
++ }
++
+ err = -ENOMEM;
+ conf->strip_zone = kzalloc(sizeof(struct strip_zone)*
+ conf->nr_strip_zones, GFP_KERNEL);
+@@ -188,19 +203,12 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
+ }
+ dev[j] = rdev1;
+
+- if (mddev->queue)
+- disk_stack_limits(mddev->gendisk, rdev1->bdev,
+- rdev1->data_offset << 9);
+-
+ if (rdev1->bdev->bd_disk->queue->merge_bvec_fn)
+ conf->has_merge_bvec = 1;
+
+ if (!smallest || (rdev1->sectors < smallest->sectors))
+ smallest = rdev1;
+ cnt++;
+-
+- if (blk_queue_discard(bdev_get_queue(rdev1->bdev)))
+- discard_supported = true;
+ }
+ if (cnt != mddev->raid_disks) {
+ printk(KERN_ERR "md/raid0:%s: too few disks (%d of %d) - "
+@@ -261,28 +269,6 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
+ (unsigned long long)smallest->sectors);
+ }
+
+- /*
+- * now since we have the hard sector sizes, we can make sure
+- * chunk size is a multiple of that sector size
+- */
+- if ((mddev->chunk_sectors << 9) % queue_logical_block_size(mddev->queue)) {
+- printk(KERN_ERR "md/raid0:%s: chunk_size of %d not valid\n",
+- mdname(mddev),
+- mddev->chunk_sectors << 9);
+- goto abort;
+- }
+-
+- if (mddev->queue) {
+- blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
+- blk_queue_io_opt(mddev->queue,
+- (mddev->chunk_sectors << 9) * mddev->raid_disks);
+-
+- if (!discard_supported)
+- queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
+- else
+- queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
+- }
+-
+ pr_debug("md/raid0:%s: done.\n", mdname(mddev));
+ *private_conf = conf;
+
+@@ -433,12 +419,6 @@ static int raid0_run(struct mddev *mddev)
+ if (md_check_no_bitmap(mddev))
+ return -EINVAL;
+
+- if (mddev->queue) {
+- blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
+- blk_queue_max_write_same_sectors(mddev->queue, mddev->chunk_sectors);
+- blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors);
+- }
+-
+ /* if private is not null, we are here after takeover */
+ if (mddev->private == NULL) {
+ ret = create_strip_zones(mddev, &conf);
+@@ -447,6 +427,29 @@ static int raid0_run(struct mddev *mddev)
+ mddev->private = conf;
+ }
+ conf = mddev->private;
++ if (mddev->queue) {
++ struct md_rdev *rdev;
++ bool discard_supported = false;
++
++ blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
++ blk_queue_max_write_same_sectors(mddev->queue, mddev->chunk_sectors);
++ blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors);
++
++ blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
++ blk_queue_io_opt(mddev->queue,
++ (mddev->chunk_sectors << 9) * mddev->raid_disks);
++
++ rdev_for_each(rdev, mddev) {
++ disk_stack_limits(mddev->gendisk, rdev->bdev,
++ rdev->data_offset << 9);
++ if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
++ discard_supported = true;
++ }
++ if (!discard_supported)
++ queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
++ else
++ queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
++ }
+
+ /* calculate array device size */
+ md_set_array_sectors(mddev, raid0_size(mddev, 0, 0));
+diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
+index 8be0df758e68..a0b1b460377d 100644
+--- a/drivers/mmc/core/host.c
++++ b/drivers/mmc/core/host.c
+@@ -373,7 +373,7 @@ int mmc_of_parse(struct mmc_host *host)
+ 0, &cd_gpio_invert);
+ if (!ret)
+ dev_info(host->parent, "Got CD GPIO\n");
+- else if (ret != -ENOENT)
++ else if (ret != -ENOENT && ret != -ENOSYS)
+ return ret;
+
+ /*
+@@ -397,7 +397,7 @@ int mmc_of_parse(struct mmc_host *host)
+ ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert);
+ if (!ret)
+ dev_info(host->parent, "Got WP GPIO\n");
+- else if (ret != -ENOENT)
++ else if (ret != -ENOENT && ret != -ENOSYS)
+ return ret;
+
+ /* See the comment on CD inversion above */
+diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
+index 5f5adafb253a..b354c8bffb9e 100644
+--- a/drivers/mmc/host/dw_mmc.c
++++ b/drivers/mmc/host/dw_mmc.c
+@@ -99,6 +99,9 @@ struct idmac_desc {
+
+ __le32 des3; /* buffer 2 physical address */
+ };
++
++/* Each descriptor can transfer up to 4KB of data in chained mode */
++#define DW_MCI_DESC_DATA_LENGTH 0x1000
+ #endif /* CONFIG_MMC_DW_IDMAC */
+
+ static bool dw_mci_reset(struct dw_mci *host);
+@@ -462,66 +465,96 @@ static void dw_mci_idmac_complete_dma(struct dw_mci *host)
+ static void dw_mci_translate_sglist(struct dw_mci *host, struct mmc_data *data,
+ unsigned int sg_len)
+ {
++ unsigned int desc_len;
+ int i;
+ if (host->dma_64bit_address == 1) {
+- struct idmac_desc_64addr *desc = host->sg_cpu;
++ struct idmac_desc_64addr *desc_first, *desc_last, *desc;
++
++ desc_first = desc_last = desc = host->sg_cpu;
+
+- for (i = 0; i < sg_len; i++, desc++) {
++ for (i = 0; i < sg_len; i++) {
+ unsigned int length = sg_dma_len(&data->sg[i]);
+ u64 mem_addr = sg_dma_address(&data->sg[i]);
+
+- /*
+- * Set the OWN bit and disable interrupts for this
+- * descriptor
+- */
+- desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC |
+- IDMAC_DES0_CH;
+- /* Buffer length */
+- IDMAC_64ADDR_SET_BUFFER1_SIZE(desc, length);
+-
+- /* Physical address to DMA to/from */
+- desc->des4 = mem_addr & 0xffffffff;
+- desc->des5 = mem_addr >> 32;
++ for ( ; length ; desc++) {
++ desc_len = (length <= DW_MCI_DESC_DATA_LENGTH) ?
++ length : DW_MCI_DESC_DATA_LENGTH;
++
++ length -= desc_len;
++
++ /*
++ * Set the OWN bit and disable interrupts
++ * for this descriptor
++ */
++ desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC |
++ IDMAC_DES0_CH;
++
++ /* Buffer length */
++ IDMAC_64ADDR_SET_BUFFER1_SIZE(desc, desc_len);
++
++ /* Physical address to DMA to/from */
++ desc->des4 = mem_addr & 0xffffffff;
++ desc->des5 = mem_addr >> 32;
++
++ /* Update physical address for the next desc */
++ mem_addr += desc_len;
++
++ /* Save pointer to the last descriptor */
++ desc_last = desc;
++ }
+ }
+
+ /* Set first descriptor */
+- desc = host->sg_cpu;
+- desc->des0 |= IDMAC_DES0_FD;
++ desc_first->des0 |= IDMAC_DES0_FD;
+
+ /* Set last descriptor */
+- desc = host->sg_cpu + (i - 1) *
+- sizeof(struct idmac_desc_64addr);
+- desc->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC);
+- desc->des0 |= IDMAC_DES0_LD;
++ desc_last->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC);
++ desc_last->des0 |= IDMAC_DES0_LD;
+
+ } else {
+- struct idmac_desc *desc = host->sg_cpu;
++ struct idmac_desc *desc_first, *desc_last, *desc;
++
++ desc_first = desc_last = desc = host->sg_cpu;
+
+- for (i = 0; i < sg_len; i++, desc++) {
++ for (i = 0; i < sg_len; i++) {
+ unsigned int length = sg_dma_len(&data->sg[i]);
+ u32 mem_addr = sg_dma_address(&data->sg[i]);
+
+- /*
+- * Set the OWN bit and disable interrupts for this
+- * descriptor
+- */
+- desc->des0 = cpu_to_le32(IDMAC_DES0_OWN |
+- IDMAC_DES0_DIC | IDMAC_DES0_CH);
+- /* Buffer length */
+- IDMAC_SET_BUFFER1_SIZE(desc, length);
++ for ( ; length ; desc++) {
++ desc_len = (length <= DW_MCI_DESC_DATA_LENGTH) ?
++ length : DW_MCI_DESC_DATA_LENGTH;
++
++ length -= desc_len;
++
++ /*
++ * Set the OWN bit and disable interrupts
++ * for this descriptor
++ */
++ desc->des0 = cpu_to_le32(IDMAC_DES0_OWN |
++ IDMAC_DES0_DIC |
++ IDMAC_DES0_CH);
++
++ /* Buffer length */
++ IDMAC_SET_BUFFER1_SIZE(desc, desc_len);
+
+- /* Physical address to DMA to/from */
+- desc->des2 = cpu_to_le32(mem_addr);
++ /* Physical address to DMA to/from */
++ desc->des2 = cpu_to_le32(mem_addr);
++
++ /* Update physical address for the next desc */
++ mem_addr += desc_len;
++
++ /* Save pointer to the last descriptor */
++ desc_last = desc;
++ }
+ }
+
+ /* Set first descriptor */
+- desc = host->sg_cpu;
+- desc->des0 |= cpu_to_le32(IDMAC_DES0_FD);
++ desc_first->des0 |= cpu_to_le32(IDMAC_DES0_FD);
+
+ /* Set last descriptor */
+- desc = host->sg_cpu + (i - 1) * sizeof(struct idmac_desc);
+- desc->des0 &= cpu_to_le32(~(IDMAC_DES0_CH | IDMAC_DES0_DIC));
+- desc->des0 |= cpu_to_le32(IDMAC_DES0_LD);
++ desc_last->des0 &= cpu_to_le32(~(IDMAC_DES0_CH |
++ IDMAC_DES0_DIC));
++ desc_last->des0 |= cpu_to_le32(IDMAC_DES0_LD);
+ }
+
+ wmb();
+@@ -2406,7 +2439,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
+ #ifdef CONFIG_MMC_DW_IDMAC
+ mmc->max_segs = host->ring_size;
+ mmc->max_blk_size = 65536;
+- mmc->max_seg_size = 0x1000;
++ mmc->max_seg_size = DW_MCI_DESC_DATA_LENGTH;
+ mmc->max_req_size = mmc->max_seg_size * host->ring_size;
+ mmc->max_blk_count = mmc->max_req_size / 512;
+ #else
+diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
+index 82f512d87cb8..461698b038f7 100644
+--- a/drivers/mmc/host/sdhci-esdhc-imx.c
++++ b/drivers/mmc/host/sdhci-esdhc-imx.c
+@@ -868,6 +868,7 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
+ struct esdhc_platform_data *boarddata)
+ {
+ struct device_node *np = pdev->dev.of_node;
++ int ret;
+
+ if (!np)
+ return -ENODEV;
+@@ -903,6 +904,14 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
+
+ mmc_of_parse_voltage(np, &host->ocr_mask);
+
++ /* call to generic mmc_of_parse to support additional capabilities */
++ ret = mmc_of_parse(host->mmc);
++ if (ret)
++ return ret;
++
++ if (!IS_ERR_VALUE(mmc_gpio_get_cd(host->mmc)))
++ host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
++
+ return 0;
+ }
+ #else
+@@ -924,6 +933,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
+ struct esdhc_platform_data *boarddata;
+ int err;
+ struct pltfm_imx_data *imx_data;
++ bool dt = true;
+
+ host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata, 0);
+ if (IS_ERR(host))
+@@ -1011,11 +1021,44 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
+ }
+ imx_data->boarddata = *((struct esdhc_platform_data *)
+ host->mmc->parent->platform_data);
++ dt = false;
++ }
++ /* write_protect */
++ if (boarddata->wp_type == ESDHC_WP_GPIO && !dt) {
++ err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio);
++ if (err) {
++ dev_err(mmc_dev(host->mmc),
++ "failed to request write-protect gpio!\n");
++ goto disable_clk;
++ }
++ host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
+ }
+
+ /* card_detect */
+- if (boarddata->cd_type == ESDHC_CD_CONTROLLER)
++ switch (boarddata->cd_type) {
++ case ESDHC_CD_GPIO:
++ if (dt)
++ break;
++ err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio, 0);
++ if (err) {
++ dev_err(mmc_dev(host->mmc),
++ "failed to request card-detect gpio!\n");
++ goto disable_clk;
++ }
++ /* fall through */
++
++ case ESDHC_CD_CONTROLLER:
++ /* we have a working card_detect back */
+ host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
++ break;
++
++ case ESDHC_CD_PERMANENT:
++ host->mmc->caps |= MMC_CAP_NONREMOVABLE;
++ break;
++
++ case ESDHC_CD_NONE:
++ break;
++ }
+
+ switch (boarddata->max_bus_width) {
+ case 8:
+@@ -1048,11 +1091,6 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
+ host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
+ }
+
+- /* call to generic mmc_of_parse to support additional capabilities */
+- err = mmc_of_parse(host->mmc);
+- if (err)
+- goto disable_clk;
+-
+ err = sdhci_add_host(host);
+ if (err)
+ goto disable_clk;
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index fd41b91436ec..cbaf3df3ebd9 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -55,8 +55,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
+ static void sdhci_tuning_timer(unsigned long data);
+ static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
+ static int sdhci_pre_dma_transfer(struct sdhci_host *host,
+- struct mmc_data *data,
+- struct sdhci_host_next *next);
++ struct mmc_data *data);
+ static int sdhci_do_get_cd(struct sdhci_host *host);
+
+ #ifdef CONFIG_PM
+@@ -510,7 +509,7 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
+ goto fail;
+ BUG_ON(host->align_addr & host->align_mask);
+
+- host->sg_count = sdhci_pre_dma_transfer(host, data, NULL);
++ host->sg_count = sdhci_pre_dma_transfer(host, data);
+ if (host->sg_count < 0)
+ goto unmap_align;
+
+@@ -649,9 +648,11 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
+ }
+ }
+
+- if (!data->host_cookie)
++ if (data->host_cookie == COOKIE_MAPPED) {
+ dma_unmap_sg(mmc_dev(host->mmc), data->sg,
+ data->sg_len, direction);
++ data->host_cookie = COOKIE_UNMAPPED;
++ }
+ }
+
+ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
+@@ -847,7 +848,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
+ } else {
+ int sg_cnt;
+
+- sg_cnt = sdhci_pre_dma_transfer(host, data, NULL);
++ sg_cnt = sdhci_pre_dma_transfer(host, data);
+ if (sg_cnt <= 0) {
+ /*
+ * This only happens when someone fed
+@@ -963,11 +964,13 @@ static void sdhci_finish_data(struct sdhci_host *host)
+ if (host->flags & SDHCI_USE_ADMA)
+ sdhci_adma_table_post(host, data);
+ else {
+- if (!data->host_cookie)
++ if (data->host_cookie == COOKIE_MAPPED) {
+ dma_unmap_sg(mmc_dev(host->mmc),
+ data->sg, data->sg_len,
+ (data->flags & MMC_DATA_READ) ?
+ DMA_FROM_DEVICE : DMA_TO_DEVICE);
++ data->host_cookie = COOKIE_UNMAPPED;
++ }
+ }
+ }
+
+@@ -2131,49 +2134,36 @@ static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
+ struct mmc_data *data = mrq->data;
+
+ if (host->flags & SDHCI_REQ_USE_DMA) {
+- if (data->host_cookie)
++ if (data->host_cookie == COOKIE_GIVEN ||
++ data->host_cookie == COOKIE_MAPPED)
+ dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ data->flags & MMC_DATA_WRITE ?
+ DMA_TO_DEVICE : DMA_FROM_DEVICE);
+- mrq->data->host_cookie = 0;
++ data->host_cookie = COOKIE_UNMAPPED;
+ }
+ }
+
+ static int sdhci_pre_dma_transfer(struct sdhci_host *host,
+- struct mmc_data *data,
+- struct sdhci_host_next *next)
++ struct mmc_data *data)
+ {
+ int sg_count;
+
+- if (!next && data->host_cookie &&
+- data->host_cookie != host->next_data.cookie) {
+- pr_debug(DRIVER_NAME "[%s] invalid cookie: %d, next-cookie %d\n",
+- __func__, data->host_cookie, host->next_data.cookie);
+- data->host_cookie = 0;
++ if (data->host_cookie == COOKIE_MAPPED) {
++ data->host_cookie = COOKIE_GIVEN;
++ return data->sg_count;
+ }
+
+- /* Check if next job is already prepared */
+- if (next ||
+- (!next && data->host_cookie != host->next_data.cookie)) {
+- sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg,
+- data->sg_len,
+- data->flags & MMC_DATA_WRITE ?
+- DMA_TO_DEVICE : DMA_FROM_DEVICE);
+-
+- } else {
+- sg_count = host->next_data.sg_count;
+- host->next_data.sg_count = 0;
+- }
++ WARN_ON(data->host_cookie == COOKIE_GIVEN);
+
++ sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
++ data->flags & MMC_DATA_WRITE ?
++ DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+ if (sg_count == 0)
+- return -EINVAL;
++ return -ENOSPC;
+
+- if (next) {
+- next->sg_count = sg_count;
+- data->host_cookie = ++next->cookie < 0 ? 1 : next->cookie;
+- } else
+- host->sg_count = sg_count;
++ data->sg_count = sg_count;
++ data->host_cookie = COOKIE_MAPPED;
+
+ return sg_count;
+ }
+@@ -2183,16 +2173,10 @@ static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
+ {
+ struct sdhci_host *host = mmc_priv(mmc);
+
+- if (mrq->data->host_cookie) {
+- mrq->data->host_cookie = 0;
+- return;
+- }
++ mrq->data->host_cookie = COOKIE_UNMAPPED;
+
+ if (host->flags & SDHCI_REQ_USE_DMA)
+- if (sdhci_pre_dma_transfer(host,
+- mrq->data,
+- &host->next_data) < 0)
+- mrq->data->host_cookie = 0;
++ sdhci_pre_dma_transfer(host, mrq->data);
+ }
+
+ static void sdhci_card_event(struct mmc_host *mmc)
+@@ -3090,7 +3074,6 @@ int sdhci_add_host(struct sdhci_host *host)
+ host->max_clk = host->ops->get_max_clock(host);
+ }
+
+- host->next_data.cookie = 1;
+ /*
+ * In case of Host Controller v3.00, find out whether clock
+ * multiplier is supported.
+diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
+index e639b7f435e5..eea23f62356a 100644
+--- a/drivers/mmc/host/sdhci.h
++++ b/drivers/mmc/host/sdhci.h
+@@ -309,9 +309,10 @@ struct sdhci_adma2_64_desc {
+ */
+ #define SDHCI_MAX_SEGS 128
+
+-struct sdhci_host_next {
+- unsigned int sg_count;
+- s32 cookie;
++enum sdhci_cookie {
++ COOKIE_UNMAPPED,
++ COOKIE_MAPPED,
++ COOKIE_GIVEN,
+ };
+
+ struct sdhci_host {
+@@ -506,7 +507,6 @@ struct sdhci_host {
+ #define SDHCI_TUNING_MODE_1 0
+ struct timer_list tuning_timer; /* Timer for tuning */
+
+- struct sdhci_host_next next_data;
+ unsigned long private[0] ____cacheline_aligned;
+ };
+
+diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
+index a4615fcc3d00..94a357d93bab 100644
+--- a/drivers/mtd/nand/pxa3xx_nand.c
++++ b/drivers/mtd/nand/pxa3xx_nand.c
+@@ -1475,6 +1475,9 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
+ if (pdata->keep_config && !pxa3xx_nand_detect_config(info))
+ goto KEEP_CONFIG;
+
++ /* Set a default chunk size */
++ info->chunk_size = 512;
++
+ ret = pxa3xx_nand_sensing(info);
+ if (ret) {
+ dev_info(&info->pdev->dev, "There is no chip on cs %d!\n",
+diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
+index 6f93b2990d25..499b8e433d3d 100644
+--- a/drivers/mtd/nand/sunxi_nand.c
++++ b/drivers/mtd/nand/sunxi_nand.c
+@@ -138,6 +138,10 @@
+ #define NFC_ECC_MODE GENMASK(15, 12)
+ #define NFC_RANDOM_SEED GENMASK(30, 16)
+
++/* NFC_USER_DATA helper macros */
++#define NFC_BUF_TO_USER_DATA(buf) ((buf)[0] | ((buf)[1] << 8) | \
++ ((buf)[2] << 16) | ((buf)[3] << 24))
++
+ #define NFC_DEFAULT_TIMEOUT_MS 1000
+
+ #define NFC_SRAM_SIZE 1024
+@@ -632,15 +636,9 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ offset = layout->eccpos[i * ecc->bytes] - 4 + mtd->writesize;
+
+ /* Fill OOB data in */
+- if (oob_required) {
+- tmp = 0xffffffff;
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, &tmp,
+- 4);
+- } else {
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE,
+- chip->oob_poi + offset - mtd->writesize,
+- 4);
+- }
++ writel(NFC_BUF_TO_USER_DATA(chip->oob_poi +
++ layout->oobfree[i].offset),
++ nfc->regs + NFC_REG_USER_DATA_BASE);
+
+ chip->cmdfunc(mtd, NAND_CMD_RNDIN, offset, -1);
+
+@@ -770,14 +768,8 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ offset += ecc->size;
+
+ /* Fill OOB data in */
+- if (oob_required) {
+- tmp = 0xffffffff;
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, &tmp,
+- 4);
+- } else {
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, oob,
+- 4);
+- }
++ writel(NFC_BUF_TO_USER_DATA(oob),
++ nfc->regs + NFC_REG_USER_DATA_BASE);
+
+ tmp = NFC_DATA_TRANS | NFC_DATA_SWAP_METHOD | NFC_ACCESS_DIR |
+ (1 << 30);
+@@ -1312,6 +1304,7 @@ static void sunxi_nand_chips_cleanup(struct sunxi_nfc *nfc)
+ node);
+ nand_release(&chip->mtd);
+ sunxi_nand_ecc_cleanup(&chip->nand.ecc);
++ list_del(&chip->node);
+ }
+ }
+
+diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
+index 5bbd1f094f4e..1fc23e48fe8e 100644
+--- a/drivers/mtd/ubi/io.c
++++ b/drivers/mtd/ubi/io.c
+@@ -926,6 +926,11 @@ static int validate_vid_hdr(const struct ubi_device *ubi,
+ goto bad;
+ }
+
++ if (data_size > ubi->leb_size) {
++ ubi_err(ubi, "bad data_size");
++ goto bad;
++ }
++
+ if (vol_type == UBI_VID_STATIC) {
+ /*
+ * Although from high-level point of view static volumes may
+diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
+index 68c9c5ea676f..bf2f916df4e2 100644
+--- a/drivers/mtd/ubi/vtbl.c
++++ b/drivers/mtd/ubi/vtbl.c
+@@ -646,6 +646,7 @@ static int init_volumes(struct ubi_device *ubi,
+ if (ubi->corr_peb_count)
+ ubi_err(ubi, "%d PEBs are corrupted and not used",
+ ubi->corr_peb_count);
++ return -ENOSPC;
+ }
+ ubi->rsvd_pebs += reserved_pebs;
+ ubi->avail_pebs -= reserved_pebs;
+diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
+index 16214d3d57a4..18fef94542f8 100644
+--- a/drivers/mtd/ubi/wl.c
++++ b/drivers/mtd/ubi/wl.c
+@@ -1601,6 +1601,7 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
+ if (ubi->corr_peb_count)
+ ubi_err(ubi, "%d PEBs are corrupted and not used",
+ ubi->corr_peb_count);
++ err = -ENOSPC;
+ goto out_free;
+ }
+ ubi->avail_pebs -= reserved_pebs;
+diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
+index 4f6bf996851e..7dfbcde34509 100644
+--- a/drivers/net/ethernet/intel/igb/igb_main.c
++++ b/drivers/net/ethernet/intel/igb/igb_main.c
+@@ -2864,7 +2864,7 @@ static void igb_probe_vfs(struct igb_adapter *adapter)
+ return;
+
+ pci_sriov_set_totalvfs(pdev, 7);
+- igb_pci_enable_sriov(pdev, max_vfs);
++ igb_enable_sriov(pdev, max_vfs);
+
+ #endif /* CONFIG_PCI_IOV */
+ }
+diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
+index 2fd9e180272b..c5dc6b57212e 100644
+--- a/drivers/net/wireless/ath/ath10k/htc.c
++++ b/drivers/net/wireless/ath/ath10k/htc.c
+@@ -163,8 +163,10 @@ int ath10k_htc_send(struct ath10k_htc *htc,
+ skb_cb->eid = eid;
+ skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE);
+ ret = dma_mapping_error(dev, skb_cb->paddr);
+- if (ret)
++ if (ret) {
++ ret = -EIO;
+ goto err_credits;
++ }
+
+ sg_item.transfer_id = ep->eid;
+ sg_item.transfer_context = skb;
+diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
+index cbd2bc9e6202..7f4854a52a7c 100644
+--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
++++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
+@@ -371,8 +371,10 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
+ skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
+ DMA_TO_DEVICE);
+ res = dma_mapping_error(dev, skb_cb->paddr);
+- if (res)
++ if (res) {
++ res = -EIO;
+ goto err_free_txdesc;
++ }
+
+ skb_put(txdesc, len);
+ cmd = (struct htt_cmd *)txdesc->data;
+@@ -463,8 +465,10 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
+ skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
+ DMA_TO_DEVICE);
+ res = dma_mapping_error(dev, skb_cb->paddr);
+- if (res)
++ if (res) {
++ res = -EIO;
+ goto err_free_txbuf;
++ }
+
+ if (likely(use_frags)) {
+ frags = skb_cb->htt.txbuf->frags;
+diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
+index 973485bd4121..5e021b0b3f9e 100644
+--- a/drivers/net/wireless/ath/ath10k/mac.c
++++ b/drivers/net/wireless/ath/ath10k/mac.c
+@@ -4464,6 +4464,21 @@ static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+ return ret;
+ }
+
++static int ath10k_mac_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
++{
++ /* Even though there's a WMI enum for fragmentation threshold no known
++ * firmware actually implements it. Moreover it is not possible to rely
++ * frame fragmentation to mac80211 because firmware clears the "more
++ * fragments" bit in frame control making it impossible for remote
++ * devices to reassemble frames.
++ *
++ * Hence implement a dummy callback just to say fragmentation isn't
++ * supported. This effectively prevents mac80211 from doing frame
++ * fragmentation in software.
++ */
++ return -EOPNOTSUPP;
++}
++
+ static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ u32 queues, bool drop)
+ {
+@@ -5108,6 +5123,7 @@ static const struct ieee80211_ops ath10k_ops = {
+ .remain_on_channel = ath10k_remain_on_channel,
+ .cancel_remain_on_channel = ath10k_cancel_remain_on_channel,
+ .set_rts_threshold = ath10k_set_rts_threshold,
++ .set_frag_threshold = ath10k_mac_op_set_frag_threshold,
+ .flush = ath10k_flush,
+ .tx_last_beacon = ath10k_tx_last_beacon,
+ .set_antenna = ath10k_set_antenna,
+diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
+index ead543282128..3c4c800ab505 100644
+--- a/drivers/net/wireless/ath/ath10k/pci.c
++++ b/drivers/net/wireless/ath/ath10k/pci.c
+@@ -1378,8 +1378,10 @@ static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
+
+ req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
+ ret = dma_mapping_error(ar->dev, req_paddr);
+- if (ret)
++ if (ret) {
++ ret = -EIO;
+ goto err_dma;
++ }
+
+ if (resp && resp_len) {
+ tresp = kzalloc(*resp_len, GFP_KERNEL);
+@@ -1391,8 +1393,10 @@ static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
+ resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
+ DMA_FROM_DEVICE);
+ ret = dma_mapping_error(ar->dev, resp_paddr);
+- if (ret)
++ if (ret) {
++ ret = EIO;
+ goto err_req;
++ }
+
+ xfer.wait_for_resp = true;
+ xfer.resp_len = 0;
+diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
+index c7ea77edce24..408ecd98e61b 100644
+--- a/drivers/net/wireless/ath/ath10k/wmi.c
++++ b/drivers/net/wireless/ath/ath10k/wmi.c
+@@ -2517,6 +2517,7 @@ void ath10k_wmi_event_host_swba(struct ath10k *ar, struct sk_buff *skb)
+ ath10k_warn(ar, "failed to map beacon: %d\n",
+ ret);
+ dev_kfree_skb_any(bcn);
++ ret = -EIO;
+ goto skip;
+ }
+
+diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
+index 1c6788aecc62..40d72312f3df 100644
+--- a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
++++ b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
+@@ -203,8 +203,10 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+
+ /* Copy firmware into DMA-accessible memory */
+ fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
+- if (!fw)
+- return -ENOMEM;
++ if (!fw) {
++ status = -ENOMEM;
++ goto out;
++ }
+ len = fw_entry->size;
+
+ if (len % 4)
+@@ -217,6 +219,8 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+
+ status = rsi_copy_to_card(common, fw, len, num_blocks);
+ kfree(fw);
++
++out:
+ release_firmware(fw_entry);
+ return status;
+ }
+diff --git a/drivers/net/wireless/rsi/rsi_91x_usb_ops.c b/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
+index 30c2cf7fa93b..de4900862836 100644
+--- a/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
++++ b/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
+@@ -148,8 +148,10 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+
+ /* Copy firmware into DMA-accessible memory */
+ fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
+- if (!fw)
+- return -ENOMEM;
++ if (!fw) {
++ status = -ENOMEM;
++ goto out;
++ }
+ len = fw_entry->size;
+
+ if (len % 4)
+@@ -162,6 +164,8 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+
+ status = rsi_copy_to_card(common, fw, len, num_blocks);
+ kfree(fw);
++
++out:
+ release_firmware(fw_entry);
+ return status;
+ }
+diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
+index e031c943286e..52f081f4dfd5 100644
+--- a/drivers/net/xen-netfront.c
++++ b/drivers/net/xen-netfront.c
+@@ -1353,7 +1353,8 @@ static void xennet_disconnect_backend(struct netfront_info *info)
+ queue->tx_evtchn = queue->rx_evtchn = 0;
+ queue->tx_irq = queue->rx_irq = 0;
+
+- napi_synchronize(&queue->napi);
++ if (netif_running(info->netdev))
++ napi_synchronize(&queue->napi);
+
+ xennet_release_tx_bufs(queue);
+ xennet_release_rx_bufs(queue);
+diff --git a/drivers/pci/access.c b/drivers/pci/access.c
+index b965c12168b7..502a82ca1db0 100644
+--- a/drivers/pci/access.c
++++ b/drivers/pci/access.c
+@@ -442,7 +442,8 @@ static const struct pci_vpd_ops pci_vpd_pci22_ops = {
+ static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count,
+ void *arg)
+ {
+- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
++ struct pci_dev *tdev = pci_get_slot(dev->bus,
++ PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
+ ssize_t ret;
+
+ if (!tdev)
+@@ -456,7 +457,8 @@ static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count,
+ static ssize_t pci_vpd_f0_write(struct pci_dev *dev, loff_t pos, size_t count,
+ const void *arg)
+ {
+- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
++ struct pci_dev *tdev = pci_get_slot(dev->bus,
++ PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
+ ssize_t ret;
+
+ if (!tdev)
+@@ -473,22 +475,6 @@ static const struct pci_vpd_ops pci_vpd_f0_ops = {
+ .release = pci_vpd_pci22_release,
+ };
+
+-static int pci_vpd_f0_dev_check(struct pci_dev *dev)
+-{
+- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
+- int ret = 0;
+-
+- if (!tdev)
+- return -ENODEV;
+- if (!tdev->vpd || !tdev->multifunction ||
+- dev->class != tdev->class || dev->vendor != tdev->vendor ||
+- dev->device != tdev->device)
+- ret = -ENODEV;
+-
+- pci_dev_put(tdev);
+- return ret;
+-}
+-
+ int pci_vpd_pci22_init(struct pci_dev *dev)
+ {
+ struct pci_vpd_pci22 *vpd;
+@@ -497,12 +483,7 @@ int pci_vpd_pci22_init(struct pci_dev *dev)
+ cap = pci_find_capability(dev, PCI_CAP_ID_VPD);
+ if (!cap)
+ return -ENODEV;
+- if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0) {
+- int ret = pci_vpd_f0_dev_check(dev);
+
+- if (ret)
+- return ret;
+- }
+ vpd = kzalloc(sizeof(*vpd), GFP_ATOMIC);
+ if (!vpd)
+ return -ENOMEM;
+diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
+index 6fbd3f2b5992..d3346d23963b 100644
+--- a/drivers/pci/bus.c
++++ b/drivers/pci/bus.c
+@@ -256,6 +256,8 @@ bool pci_bus_clip_resource(struct pci_dev *dev, int idx)
+
+ res->start = start;
+ res->end = end;
++ res->flags &= ~IORESOURCE_UNSET;
++ orig_res.flags &= ~IORESOURCE_UNSET;
+ dev_printk(KERN_DEBUG, &dev->dev, "%pR clipped to %pR\n",
+ &orig_res, res);
+
+diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
+index 804cd3b02c66..4a6933f02cd0 100644
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -1915,11 +1915,27 @@ static void quirk_netmos(struct pci_dev *dev)
+ DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
+
++/*
++ * Quirk non-zero PCI functions to route VPD access through function 0 for
++ * devices that share VPD resources between functions. The functions are
++ * expected to be identical devices.
++ */
+ static void quirk_f0_vpd_link(struct pci_dev *dev)
+ {
+- if (!dev->multifunction || !PCI_FUNC(dev->devfn))
++ struct pci_dev *f0;
++
++ if (!PCI_FUNC(dev->devfn))
+ return;
+- dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
++
++ f0 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
++ if (!f0)
++ return;
++
++ if (f0->vpd && dev->class == f0->class &&
++ dev->vendor == f0->vendor && dev->device == f0->device)
++ dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
++
++ pci_dev_put(f0);
+ }
+ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
+ PCI_CLASS_NETWORK_ETHERNET, 8, quirk_f0_vpd_link);
+diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c
+index 803945259da8..42861cc70158 100644
+--- a/drivers/pcmcia/sa1100_generic.c
++++ b/drivers/pcmcia/sa1100_generic.c
+@@ -93,7 +93,6 @@ static int sa11x0_drv_pcmcia_remove(struct platform_device *dev)
+ for (i = 0; i < sinfo->nskt; i++)
+ soc_pcmcia_remove_one(&sinfo->skt[i]);
+
+- clk_put(sinfo->clk);
+ kfree(sinfo);
+ return 0;
+ }
+diff --git a/drivers/pcmcia/sa11xx_base.c b/drivers/pcmcia/sa11xx_base.c
+index cf6de2c2b329..553d70a67f80 100644
+--- a/drivers/pcmcia/sa11xx_base.c
++++ b/drivers/pcmcia/sa11xx_base.c
+@@ -222,7 +222,7 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
+ int i, ret = 0;
+ struct clk *clk;
+
+- clk = clk_get(dev, NULL);
++ clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+@@ -251,7 +251,6 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
+ if (ret) {
+ while (--i >= 0)
+ soc_pcmcia_remove_one(&sinfo->skt[i]);
+- clk_put(clk);
+ kfree(sinfo);
+ } else {
+ dev_set_drvdata(dev, sinfo);
+diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
+index 9956b9902bb4..93e54a0f471a 100644
+--- a/drivers/platform/x86/toshiba_acpi.c
++++ b/drivers/platform/x86/toshiba_acpi.c
+@@ -2525,11 +2525,9 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
+ if (error)
+ return error;
+
+- error = toshiba_hotkey_event_type_get(dev, &events_type);
+- if (error) {
+- pr_err("Unable to query Hotkey Event Type\n");
+- return error;
+- }
++ if (toshiba_hotkey_event_type_get(dev, &events_type))
++ pr_notice("Unable to query Hotkey Event Type\n");
++
+ dev->hotkey_event_type = events_type;
+
+ dev->hotkey_dev = input_allocate_device();
+diff --git a/drivers/power/avs/Kconfig b/drivers/power/avs/Kconfig
+index 7f3d389bd601..a67eeace6a89 100644
+--- a/drivers/power/avs/Kconfig
++++ b/drivers/power/avs/Kconfig
+@@ -13,7 +13,7 @@ menuconfig POWER_AVS
+
+ config ROCKCHIP_IODOMAIN
+ tristate "Rockchip IO domain support"
+- depends on ARCH_ROCKCHIP && OF
++ depends on POWER_AVS && ARCH_ROCKCHIP && OF
+ help
+ Say y here to enable support io domains on Rockchip SoCs. It is
+ necessary for the io domain setting of the SoC to match the
+diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
+index add419d6ff34..a56a7b243e91 100644
+--- a/drivers/scsi/3w-9xxx.c
++++ b/drivers/scsi/3w-9xxx.c
+@@ -212,6 +212,17 @@ static const struct file_operations twa_fops = {
+ .llseek = noop_llseek,
+ };
+
++/*
++ * The controllers use an inline buffer instead of a mapped SGL for small,
++ * single entry buffers. Note that we treat a zero-length transfer like
++ * a mapped SGL.
++ */
++static bool twa_command_mapped(struct scsi_cmnd *cmd)
++{
++ return scsi_sg_count(cmd) != 1 ||
++ scsi_bufflen(cmd) >= TW_MIN_SGL_LENGTH;
++}
++
+ /* This function will complete an aen request from the isr */
+ static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id)
+ {
+@@ -1339,7 +1350,8 @@ static irqreturn_t twa_interrupt(int irq, void *dev_instance)
+ }
+
+ /* Now complete the io */
+- scsi_dma_unmap(cmd);
++ if (twa_command_mapped(cmd))
++ scsi_dma_unmap(cmd);
+ cmd->scsi_done(cmd);
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ twa_free_request_id(tw_dev, request_id);
+@@ -1582,7 +1594,8 @@ static int twa_reset_device_extension(TW_Device_Extension *tw_dev)
+ struct scsi_cmnd *cmd = tw_dev->srb[i];
+
+ cmd->result = (DID_RESET << 16);
+- scsi_dma_unmap(cmd);
++ if (twa_command_mapped(cmd))
++ scsi_dma_unmap(cmd);
+ cmd->scsi_done(cmd);
+ }
+ }
+@@ -1765,12 +1778,14 @@ static int twa_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_
+ retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL);
+ switch (retval) {
+ case SCSI_MLQUEUE_HOST_BUSY:
+- scsi_dma_unmap(SCpnt);
++ if (twa_command_mapped(SCpnt))
++ scsi_dma_unmap(SCpnt);
+ twa_free_request_id(tw_dev, request_id);
+ break;
+ case 1:
+ SCpnt->result = (DID_ERROR << 16);
+- scsi_dma_unmap(SCpnt);
++ if (twa_command_mapped(SCpnt))
++ scsi_dma_unmap(SCpnt);
+ done(SCpnt);
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ twa_free_request_id(tw_dev, request_id);
+@@ -1831,8 +1846,7 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
+ /* Map sglist from scsi layer to cmd packet */
+
+ if (scsi_sg_count(srb)) {
+- if ((scsi_sg_count(srb) == 1) &&
+- (scsi_bufflen(srb) < TW_MIN_SGL_LENGTH)) {
++ if (!twa_command_mapped(srb)) {
+ if (srb->sc_data_direction == DMA_TO_DEVICE ||
+ srb->sc_data_direction == DMA_BIDIRECTIONAL)
+ scsi_sg_copy_to_buffer(srb,
+@@ -1905,7 +1919,7 @@ static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int re
+ {
+ struct scsi_cmnd *cmd = tw_dev->srb[request_id];
+
+- if (scsi_bufflen(cmd) < TW_MIN_SGL_LENGTH &&
++ if (!twa_command_mapped(cmd) &&
+ (cmd->sc_data_direction == DMA_FROM_DEVICE ||
+ cmd->sc_data_direction == DMA_BIDIRECTIONAL)) {
+ if (scsi_sg_count(cmd) == 1) {
+diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
+index a9aa38903efe..cccab6188328 100644
+--- a/drivers/scsi/ipr.c
++++ b/drivers/scsi/ipr.c
+@@ -4554,7 +4554,7 @@ static ssize_t ipr_store_raw_mode(struct device *dev,
+ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+ res = (struct ipr_resource_entry *)sdev->hostdata;
+ if (res) {
+- if (ioa_cfg->sis64 && ipr_is_af_dasd_device(res)) {
++ if (ipr_is_af_dasd_device(res)) {
+ res->raw_mode = simple_strtoul(buf, NULL, 10);
+ len = strlen(buf);
+ if (res->sdev)
+diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
+index ce6c770d74d5..c6b93d273799 100644
+--- a/drivers/scsi/scsi_error.c
++++ b/drivers/scsi/scsi_error.c
+@@ -2169,8 +2169,17 @@ int scsi_error_handler(void *data)
+ * We never actually get interrupted because kthread_run
+ * disables signal delivery for the created thread.
+ */
+- while (!kthread_should_stop()) {
++ while (true) {
++ /*
++ * The sequence in kthread_stop() sets the stop flag first
++ * then wakes the process. To avoid missed wakeups, the task
++ * should always be in a non running state before the stop
++ * flag is checked
++ */
+ set_current_state(TASK_INTERRUPTIBLE);
++ if (kthread_should_stop())
++ break;
++
+ if ((shost->host_failed == 0 && shost->host_eh_scheduled == 0) ||
+ shost->host_failed != atomic_read(&shost->host_busy)) {
+ SCSI_LOG_ERROR_RECOVERY(1,
+diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
+index e3223ac75a7c..f089082c00e1 100644
+--- a/drivers/spi/spi-pxa2xx.c
++++ b/drivers/spi/spi-pxa2xx.c
+@@ -624,6 +624,10 @@ static irqreturn_t ssp_int(int irq, void *dev_id)
+ if (!(sccr1_reg & SSCR1_TIE))
+ mask &= ~SSSR_TFS;
+
++ /* Ignore RX timeout interrupt if it is disabled */
++ if (!(sccr1_reg & SSCR1_TINTE))
++ mask &= ~SSSR_TINT;
++
+ if (!(status & mask))
+ return IRQ_NONE;
+
+diff --git a/drivers/spi/spi-xtensa-xtfpga.c b/drivers/spi/spi-xtensa-xtfpga.c
+index 2e32ea2f194f..be6155cba9de 100644
+--- a/drivers/spi/spi-xtensa-xtfpga.c
++++ b/drivers/spi/spi-xtensa-xtfpga.c
+@@ -34,13 +34,13 @@ struct xtfpga_spi {
+ static inline void xtfpga_spi_write32(const struct xtfpga_spi *spi,
+ unsigned addr, u32 val)
+ {
+- iowrite32(val, spi->regs + addr);
++ __raw_writel(val, spi->regs + addr);
+ }
+
+ static inline unsigned int xtfpga_spi_read32(const struct xtfpga_spi *spi,
+ unsigned addr)
+ {
+- return ioread32(spi->regs + addr);
++ return __raw_readl(spi->regs + addr);
+ }
+
+ static inline void xtfpga_spi_wait_busy(struct xtfpga_spi *xspi)
+diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
+index d35c1a13217c..029dbd33b4b2 100644
+--- a/drivers/spi/spi.c
++++ b/drivers/spi/spi.c
+@@ -1427,8 +1427,7 @@ static struct class spi_master_class = {
+ *
+ * The caller is responsible for assigning the bus number and initializing
+ * the master's methods before calling spi_register_master(); and (after errors
+- * adding the device) calling spi_master_put() and kfree() to prevent a memory
+- * leak.
++ * adding the device) calling spi_master_put() to prevent a memory leak.
+ */
+ struct spi_master *spi_alloc_master(struct device *dev, unsigned size)
+ {
+diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
+index 92c909eed6b5..8fab566e0f0b 100644
+--- a/drivers/spi/spidev.c
++++ b/drivers/spi/spidev.c
+@@ -664,7 +664,8 @@ static int spidev_release(struct inode *inode, struct file *filp)
+ kfree(spidev->rx_buffer);
+ spidev->rx_buffer = NULL;
+
+- spidev->speed_hz = spidev->spi->max_speed_hz;
++ if (spidev->spi)
++ spidev->speed_hz = spidev->spi->max_speed_hz;
+
+ /* ... after we unbound from the underlying device? */
+ spin_lock_irq(&spidev->spi_lock);
+diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
+index b0b96ab31954..abbc42a56e7c 100644
+--- a/drivers/staging/android/ion/ion.c
++++ b/drivers/staging/android/ion/ion.c
+@@ -1179,13 +1179,13 @@ struct ion_handle *ion_import_dma_buf(struct ion_client *client, int fd)
+ mutex_unlock(&client->lock);
+ goto end;
+ }
+- mutex_unlock(&client->lock);
+
+ handle = ion_handle_create(client, buffer);
+- if (IS_ERR(handle))
++ if (IS_ERR(handle)) {
++ mutex_unlock(&client->lock);
+ goto end;
++ }
+
+- mutex_lock(&client->lock);
+ ret = ion_handle_add(client, handle);
+ mutex_unlock(&client->lock);
+ if (ret) {
+diff --git a/drivers/staging/speakup/fakekey.c b/drivers/staging/speakup/fakekey.c
+index 4299cf45f947..5e1f16c36b49 100644
+--- a/drivers/staging/speakup/fakekey.c
++++ b/drivers/staging/speakup/fakekey.c
+@@ -81,6 +81,7 @@ void speakup_fake_down_arrow(void)
+ __this_cpu_write(reporting_keystroke, true);
+ input_report_key(virt_keyboard, KEY_DOWN, PRESSED);
+ input_report_key(virt_keyboard, KEY_DOWN, RELEASED);
++ input_sync(virt_keyboard);
+ __this_cpu_write(reporting_keystroke, false);
+
+ /* reenable preemption */
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 0ab6e2efd28c..330bbe831066 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -341,7 +341,6 @@ static struct iscsi_np *iscsit_get_np(
+
+ struct iscsi_np *iscsit_add_np(
+ struct __kernel_sockaddr_storage *sockaddr,
+- char *ip_str,
+ int network_transport)
+ {
+ struct sockaddr_in *sock_in;
+@@ -370,11 +369,9 @@ struct iscsi_np *iscsit_add_np(
+ np->np_flags |= NPF_IP_NETWORK;
+ if (sockaddr->ss_family == AF_INET6) {
+ sock_in6 = (struct sockaddr_in6 *)sockaddr;
+- snprintf(np->np_ip, IPV6_ADDRESS_SPACE, "%s", ip_str);
+ np->np_port = ntohs(sock_in6->sin6_port);
+ } else {
+ sock_in = (struct sockaddr_in *)sockaddr;
+- sprintf(np->np_ip, "%s", ip_str);
+ np->np_port = ntohs(sock_in->sin_port);
+ }
+
+@@ -411,8 +408,8 @@ struct iscsi_np *iscsit_add_np(
+ list_add_tail(&np->np_list, &g_np_list);
+ mutex_unlock(&np_lock);
+
+- pr_debug("CORE[0] - Added Network Portal: %s:%hu on %s\n",
+- np->np_ip, np->np_port, np->np_transport->name);
++ pr_debug("CORE[0] - Added Network Portal: %pISc:%hu on %s\n",
++ &np->np_sockaddr, np->np_port, np->np_transport->name);
+
+ return np;
+ }
+@@ -481,8 +478,8 @@ int iscsit_del_np(struct iscsi_np *np)
+ list_del(&np->np_list);
+ mutex_unlock(&np_lock);
+
+- pr_debug("CORE[0] - Removed Network Portal: %s:%hu on %s\n",
+- np->np_ip, np->np_port, np->np_transport->name);
++ pr_debug("CORE[0] - Removed Network Portal: %pISc:%hu on %s\n",
++ &np->np_sockaddr, np->np_port, np->np_transport->name);
+
+ iscsit_put_transport(np->np_transport);
+ kfree(np);
+@@ -3467,7 +3464,6 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd,
+ tpg_np_list) {
+ struct iscsi_np *np = tpg_np->tpg_np;
+ bool inaddr_any = iscsit_check_inaddr_any(np);
+- char *fmt_str;
+
+ if (np->np_network_transport != network_transport)
+ continue;
+@@ -3495,15 +3491,18 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd,
+ }
+ }
+
+- if (np->np_sockaddr.ss_family == AF_INET6)
+- fmt_str = "TargetAddress=[%s]:%hu,%hu";
+- else
+- fmt_str = "TargetAddress=%s:%hu,%hu";
+-
+- len = sprintf(buf, fmt_str,
+- inaddr_any ? conn->local_ip : np->np_ip,
+- np->np_port,
+- tpg->tpgt);
++ if (inaddr_any) {
++ len = sprintf(buf, "TargetAddress="
++ "%s:%hu,%hu",
++ conn->local_ip,
++ np->np_port,
++ tpg->tpgt);
++ } else {
++ len = sprintf(buf, "TargetAddress="
++ "%pISpc,%hu",
++ &np->np_sockaddr,
++ tpg->tpgt);
++ }
+ len += 1;
+
+ if ((len + payload_len) > buffer_len) {
+diff --git a/drivers/target/iscsi/iscsi_target.h b/drivers/target/iscsi/iscsi_target.h
+index 7d0f9c00d9c2..d294f030a097 100644
+--- a/drivers/target/iscsi/iscsi_target.h
++++ b/drivers/target/iscsi/iscsi_target.h
+@@ -13,7 +13,7 @@ extern int iscsit_deaccess_np(struct iscsi_np *, struct iscsi_portal_group *,
+ extern bool iscsit_check_np_match(struct __kernel_sockaddr_storage *,
+ struct iscsi_np *, int);
+ extern struct iscsi_np *iscsit_add_np(struct __kernel_sockaddr_storage *,
+- char *, int);
++ int);
+ extern int iscsit_reset_np_thread(struct iscsi_np *, struct iscsi_tpg_np *,
+ struct iscsi_portal_group *, bool);
+ extern int iscsit_del_np(struct iscsi_np *);
+diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
+index 469fce44ebad..6f2fb546477e 100644
+--- a/drivers/target/iscsi/iscsi_target_configfs.c
++++ b/drivers/target/iscsi/iscsi_target_configfs.c
+@@ -100,7 +100,7 @@ static ssize_t lio_target_np_store_sctp(
+ * Use existing np->np_sockaddr for SCTP network portal reference
+ */
+ tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
+- np->np_ip, tpg_np, ISCSI_SCTP_TCP);
++ tpg_np, ISCSI_SCTP_TCP);
+ if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
+ goto out;
+ } else {
+@@ -178,7 +178,7 @@ static ssize_t lio_target_np_store_iser(
+ }
+
+ tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
+- np->np_ip, tpg_np, ISCSI_INFINIBAND);
++ tpg_np, ISCSI_INFINIBAND);
+ if (IS_ERR(tpg_np_iser)) {
+ rc = PTR_ERR(tpg_np_iser);
+ goto out;
+@@ -249,8 +249,8 @@ static struct se_tpg_np *lio_target_call_addnptotpg(
+ return ERR_PTR(-EINVAL);
+ }
+ str++; /* Skip over leading "[" */
+- *str2 = '\0'; /* Terminate the IPv6 address */
+- str2++; /* Skip over the "]" */
++ *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
++ str2++; /* Skip over the \0 */
+ port_str = strstr(str2, ":");
+ if (!port_str) {
+ pr_err("Unable to locate \":port\""
+@@ -317,7 +317,7 @@ static struct se_tpg_np *lio_target_call_addnptotpg(
+ * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
+ *
+ */
+- tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
++ tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
+ ISCSI_TCP);
+ if (IS_ERR(tpg_np)) {
+ iscsit_put_tpg(tpg);
+@@ -345,8 +345,8 @@ static void lio_target_call_delnpfromtpg(
+
+ se_tpg = &tpg->tpg_se_tpg;
+ pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
+- " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
+- tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
++ " PORTAL: %pISc:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
++ tpg->tpgt, &tpg_np->tpg_np->np_sockaddr, tpg_np->tpg_np->np_port);
+
+ ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
+ if (ret < 0)
+diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
+index c3bccaddb592..39654e917cd8 100644
+--- a/drivers/target/iscsi/iscsi_target_login.c
++++ b/drivers/target/iscsi/iscsi_target_login.c
+@@ -879,8 +879,8 @@ static void iscsi_handle_login_thread_timeout(unsigned long data)
+ struct iscsi_np *np = (struct iscsi_np *) data;
+
+ spin_lock_bh(&np->np_thread_lock);
+- pr_err("iSCSI Login timeout on Network Portal %s:%hu\n",
+- np->np_ip, np->np_port);
++ pr_err("iSCSI Login timeout on Network Portal %pISc:%hu\n",
++ &np->np_sockaddr, np->np_port);
+
+ if (np->np_login_timer_flags & ISCSI_TF_STOP) {
+ spin_unlock_bh(&np->np_thread_lock);
+@@ -1358,8 +1358,8 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
+ spin_lock_bh(&np->np_thread_lock);
+ if (np->np_thread_state != ISCSI_NP_THREAD_ACTIVE) {
+ spin_unlock_bh(&np->np_thread_lock);
+- pr_err("iSCSI Network Portal on %s:%hu currently not"
+- " active.\n", np->np_ip, np->np_port);
++ pr_err("iSCSI Network Portal on %pISc:%hu currently not"
++ " active.\n", &np->np_sockaddr, np->np_port);
+ iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
+ ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE);
+ goto new_sess_out;
+diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
+index 5e3295fe404d..3bc7d62c0a65 100644
+--- a/drivers/target/iscsi/iscsi_target_tpg.c
++++ b/drivers/target/iscsi/iscsi_target_tpg.c
+@@ -460,7 +460,6 @@ static bool iscsit_tpg_check_network_portal(
+ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
+ struct iscsi_portal_group *tpg,
+ struct __kernel_sockaddr_storage *sockaddr,
+- char *ip_str,
+ struct iscsi_tpg_np *tpg_np_parent,
+ int network_transport)
+ {
+@@ -470,8 +469,8 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
+ if (!tpg_np_parent) {
+ if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
+ network_transport)) {
+- pr_err("Network Portal: %s already exists on a"
+- " different TPG on %s\n", ip_str,
++ pr_err("Network Portal: %pISc already exists on a"
++ " different TPG on %s\n", sockaddr,
+ tpg->tpg_tiqn->tiqn);
+ return ERR_PTR(-EEXIST);
+ }
+@@ -484,7 +483,7 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
+ return ERR_PTR(-ENOMEM);
+ }
+
+- np = iscsit_add_np(sockaddr, ip_str, network_transport);
++ np = iscsit_add_np(sockaddr, network_transport);
+ if (IS_ERR(np)) {
+ kfree(tpg_np);
+ return ERR_CAST(np);
+@@ -514,8 +513,8 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
+ spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
+ }
+
+- pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n",
+- tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
++ pr_debug("CORE[%s] - Added Network Portal: %pISc:%hu,%hu on %s\n",
++ tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt,
+ np->np_transport->name);
+
+ return tpg_np;
+@@ -528,8 +527,8 @@ static int iscsit_tpg_release_np(
+ {
+ iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true);
+
+- pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n",
+- tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
++ pr_debug("CORE[%s] - Removed Network Portal: %pISc:%hu,%hu on %s\n",
++ tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt,
+ np->np_transport->name);
+
+ tpg_np->tpg_np = NULL;
+diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h
+index 95ff5bdecd71..28abda89ea98 100644
+--- a/drivers/target/iscsi/iscsi_target_tpg.h
++++ b/drivers/target/iscsi/iscsi_target_tpg.h
+@@ -22,7 +22,7 @@ extern struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(struct iscsi_session
+ extern void iscsit_tpg_del_external_nps(struct iscsi_tpg_np *);
+ extern struct iscsi_tpg_np *iscsit_tpg_locate_child_np(struct iscsi_tpg_np *, int);
+ extern struct iscsi_tpg_np *iscsit_tpg_add_network_portal(struct iscsi_portal_group *,
+- struct __kernel_sockaddr_storage *, char *, struct iscsi_tpg_np *,
++ struct __kernel_sockaddr_storage *, struct iscsi_tpg_np *,
+ int);
+ extern int iscsit_tpg_del_network_portal(struct iscsi_portal_group *,
+ struct iscsi_tpg_np *);
+diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
+index a15411c79ae9..08aa7cc58694 100644
+--- a/drivers/target/target_core_pr.c
++++ b/drivers/target/target_core_pr.c
+@@ -328,6 +328,9 @@ static int core_scsi3_pr_seq_non_holder(
+ int legacy = 0; /* Act like a legacy device and return
+ * RESERVATION CONFLICT on some CDBs */
+
++ if (!se_sess->se_node_acl->device_list)
++ return;
++
+ se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
+ /*
+ * Determine if the registration should be ignored due to
+diff --git a/drivers/target/target_core_ua.c b/drivers/target/target_core_ua.c
+index 1738b1646988..9fc33e84439a 100644
+--- a/drivers/target/target_core_ua.c
++++ b/drivers/target/target_core_ua.c
+@@ -48,7 +48,7 @@ target_scsi3_ua_check(struct se_cmd *cmd)
+ return 0;
+
+ nacl = sess->se_node_acl;
+- if (!nacl)
++ if (!nacl || !nacl->device_list)
+ return 0;
+
+ deve = nacl->device_list[cmd->orig_fe_lun];
+@@ -90,7 +90,7 @@ int core_scsi3_ua_allocate(
+ /*
+ * PASSTHROUGH OPS
+ */
+- if (!nacl)
++ if (!nacl || !nacl->device_list)
+ return -EINVAL;
+
+ ua = kmem_cache_zalloc(se_ua_cache, GFP_ATOMIC);
+@@ -208,7 +208,7 @@ void core_scsi3_ua_for_check_condition(
+ return;
+
+ nacl = sess->se_node_acl;
+- if (!nacl)
++ if (!nacl || !nacl->device_list)
+ return;
+
+ spin_lock_irq(&nacl->device_list_lock);
+@@ -276,7 +276,7 @@ int core_scsi3_ua_clear_for_request_sense(
+ return -EINVAL;
+
+ nacl = sess->se_node_acl;
+- if (!nacl)
++ if (!nacl || !nacl->device_list)
+ return -EINVAL;
+
+ spin_lock_irq(&nacl->device_list_lock);
+diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
+index 8fd680ac941b..4609305a1591 100644
+--- a/drivers/target/target_core_xcopy.c
++++ b/drivers/target/target_core_xcopy.c
+@@ -465,6 +465,8 @@ int target_xcopy_setup_pt(void)
+ memset(&xcopy_pt_sess, 0, sizeof(struct se_session));
+ INIT_LIST_HEAD(&xcopy_pt_sess.sess_list);
+ INIT_LIST_HEAD(&xcopy_pt_sess.sess_acl_list);
++ INIT_LIST_HEAD(&xcopy_pt_sess.sess_cmd_list);
++ spin_lock_init(&xcopy_pt_sess.sess_cmd_lock);
+
+ xcopy_pt_nacl.se_tpg = &xcopy_pt_tpg;
+ xcopy_pt_nacl.nacl_sess = &xcopy_pt_sess;
+@@ -666,7 +668,7 @@ static int target_xcopy_read_source(
+ pr_debug("XCOPY: Built READ_16: LBA: %llu Sectors: %u Length: %u\n",
+ (unsigned long long)src_lba, src_sectors, length);
+
+- transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, NULL, length,
++ transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, length,
+ DMA_FROM_DEVICE, 0, &xpt_cmd->sense_buffer[0]);
+ xop->src_pt_cmd = xpt_cmd;
+
+@@ -726,7 +728,7 @@ static int target_xcopy_write_destination(
+ pr_debug("XCOPY: Built WRITE_16: LBA: %llu Sectors: %u Length: %u\n",
+ (unsigned long long)dst_lba, dst_sectors, length);
+
+- transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, NULL, length,
++ transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, length,
+ DMA_TO_DEVICE, 0, &xpt_cmd->sense_buffer[0]);
+ xop->dst_pt_cmd = xpt_cmd;
+
+diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
+index 16ed0b6c7f9c..6b6c6606af5f 100644
+--- a/drivers/tty/n_tty.c
++++ b/drivers/tty/n_tty.c
+@@ -343,8 +343,7 @@ static void n_tty_packet_mode_flush(struct tty_struct *tty)
+ spin_lock_irqsave(&tty->ctrl_lock, flags);
+ tty->ctrl_status |= TIOCPKT_FLUSHREAD;
+ spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+- if (waitqueue_active(&tty->link->read_wait))
+- wake_up_interruptible(&tty->link->read_wait);
++ wake_up_interruptible(&tty->link->read_wait);
+ }
+ }
+
+@@ -1383,8 +1382,7 @@ handle_newline:
+ put_tty_queue(c, ldata);
+ smp_store_release(&ldata->canon_head, ldata->read_head);
+ kill_fasync(&tty->fasync, SIGIO, POLL_IN);
+- if (waitqueue_active(&tty->read_wait))
+- wake_up_interruptible_poll(&tty->read_wait, POLLIN);
++ wake_up_interruptible_poll(&tty->read_wait, POLLIN);
+ return 0;
+ }
+ }
+@@ -1670,8 +1668,7 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,
+
+ if ((read_cnt(ldata) >= ldata->minimum_to_wake) || L_EXTPROC(tty)) {
+ kill_fasync(&tty->fasync, SIGIO, POLL_IN);
+- if (waitqueue_active(&tty->read_wait))
+- wake_up_interruptible_poll(&tty->read_wait, POLLIN);
++ wake_up_interruptible_poll(&tty->read_wait, POLLIN);
+ }
+ }
+
+@@ -1890,10 +1887,8 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
+ }
+
+ /* The termios change make the tty ready for I/O */
+- if (waitqueue_active(&tty->write_wait))
+- wake_up_interruptible(&tty->write_wait);
+- if (waitqueue_active(&tty->read_wait))
+- wake_up_interruptible(&tty->read_wait);
++ wake_up_interruptible(&tty->write_wait);
++ wake_up_interruptible(&tty->read_wait);
+ }
+
+ /**
+diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
+index 4506e405c8f3..b4fd8debf941 100644
+--- a/drivers/tty/serial/8250/8250_core.c
++++ b/drivers/tty/serial/8250/8250_core.c
+@@ -339,6 +339,14 @@ configured less than Maximum supported fifo bytes */
+ UART_FCR7_64BYTE,
+ .flags = UART_CAP_FIFO,
+ },
++ [PORT_RT2880] = {
++ .name = "Palmchip BK-3103",
++ .fifo_size = 16,
++ .tx_loadsz = 16,
++ .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
++ .rxtrig_bytes = {1, 4, 8, 14},
++ .flags = UART_CAP_FIFO,
++ },
+ };
+
+ /* Uart divisor latch read */
+diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
+index 763eb20fe321..0cc622afb67d 100644
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -1360,9 +1360,9 @@ static void pl011_tx_softirq(struct work_struct *work)
+ struct uart_amba_port *uap =
+ container_of(dwork, struct uart_amba_port, tx_softirq_work);
+
+- spin_lock(&uap->port.lock);
++ spin_lock_irq(&uap->port.lock);
+ while (pl011_tx_chars(uap)) ;
+- spin_unlock(&uap->port.lock);
++ spin_unlock_irq(&uap->port.lock);
+ }
+
+ static void pl011_tx_irq_seen(struct uart_amba_port *uap)
+diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
+index 5ca1dfb0561c..85323ff75edf 100644
+--- a/drivers/tty/serial/atmel_serial.c
++++ b/drivers/tty/serial/atmel_serial.c
+@@ -2640,7 +2640,7 @@ static int atmel_serial_probe(struct platform_device *pdev)
+ ret = atmel_init_gpios(port, &pdev->dev);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to initialize GPIOs.");
+- goto err;
++ goto err_clear_bit;
+ }
+
+ ret = atmel_init_port(port, pdev);
+diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
+index e5695467598f..21837f14a403 100644
+--- a/drivers/tty/tty_io.c
++++ b/drivers/tty/tty_io.c
+@@ -2144,8 +2144,24 @@ retry_open:
+ if (!noctty &&
+ current->signal->leader &&
+ !current->signal->tty &&
+- tty->session == NULL)
+- __proc_set_tty(tty);
++ tty->session == NULL) {
++ /*
++ * Don't let a process that only has write access to the tty
++ * obtain the privileges associated with having a tty as
++ * controlling terminal (being able to reopen it with full
++ * access through /dev/tty, being able to perform pushback).
++ * Many distributions set the group of all ttys to "tty" and
++ * grant write-only access to all terminals for setgid tty
++ * binaries, which should not imply full privileges on all ttys.
++ *
++ * This could theoretically break old code that performs open()
++ * on a write-only file descriptor. In that case, it might be
++ * necessary to also permit this if
++ * inode_permission(inode, MAY_READ) == 0.
++ */
++ if (filp->f_mode & FMODE_READ)
++ __proc_set_tty(tty);
++ }
+ spin_unlock_irq(¤t->sighand->siglock);
+ read_unlock(&tasklist_lock);
+ tty_unlock(tty);
+@@ -2434,7 +2450,7 @@ static int fionbio(struct file *file, int __user *p)
+ * Takes ->siglock() when updating signal->tty
+ */
+
+-static int tiocsctty(struct tty_struct *tty, int arg)
++static int tiocsctty(struct tty_struct *tty, struct file *file, int arg)
+ {
+ int ret = 0;
+
+@@ -2468,6 +2484,13 @@ static int tiocsctty(struct tty_struct *tty, int arg)
+ goto unlock;
+ }
+ }
++
++ /* See the comment in tty_open(). */
++ if ((file->f_mode & FMODE_READ) == 0 && !capable(CAP_SYS_ADMIN)) {
++ ret = -EPERM;
++ goto unlock;
++ }
++
+ proc_set_tty(tty);
+ unlock:
+ read_unlock(&tasklist_lock);
+@@ -2860,7 +2883,7 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ no_tty();
+ return 0;
+ case TIOCSCTTY:
+- return tiocsctty(tty, arg);
++ return tiocsctty(tty, file, arg);
+ case TIOCGPGRP:
+ return tiocgpgrp(tty, real_tty, p);
+ case TIOCSPGRP:
+diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
+index 389f0e034259..fa774323ebda 100644
+--- a/drivers/usb/chipidea/ci_hdrc_imx.c
++++ b/drivers/usb/chipidea/ci_hdrc_imx.c
+@@ -56,7 +56,7 @@ static const struct of_device_id ci_hdrc_imx_dt_ids[] = {
+ { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data},
+ { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data},
+ { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data},
+- { .compatible = "fsl,imx6sx-usb", .data = &imx6sl_usb_data},
++ { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data},
+ { /* sentinel */ }
+ };
+ MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids);
+diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
+index 764f668d45a9..6e53c24fa1cb 100644
+--- a/drivers/usb/chipidea/udc.c
++++ b/drivers/usb/chipidea/udc.c
+@@ -656,6 +656,44 @@ __acquires(hwep->lock)
+ return 0;
+ }
+
++static int _ep_set_halt(struct usb_ep *ep, int value, bool check_transfer)
++{
++ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
++ int direction, retval = 0;
++ unsigned long flags;
++
++ if (ep == NULL || hwep->ep.desc == NULL)
++ return -EINVAL;
++
++ if (usb_endpoint_xfer_isoc(hwep->ep.desc))
++ return -EOPNOTSUPP;
++
++ spin_lock_irqsave(hwep->lock, flags);
++
++ if (value && hwep->dir == TX && check_transfer &&
++ !list_empty(&hwep->qh.queue) &&
++ !usb_endpoint_xfer_control(hwep->ep.desc)) {
++ spin_unlock_irqrestore(hwep->lock, flags);
++ return -EAGAIN;
++ }
++
++ direction = hwep->dir;
++ do {
++ retval |= hw_ep_set_halt(hwep->ci, hwep->num, hwep->dir, value);
++
++ if (!value)
++ hwep->wedge = 0;
++
++ if (hwep->type == USB_ENDPOINT_XFER_CONTROL)
++ hwep->dir = (hwep->dir == TX) ? RX : TX;
++
++ } while (hwep->dir != direction);
++
++ spin_unlock_irqrestore(hwep->lock, flags);
++ return retval;
++}
++
++
+ /**
+ * _gadget_stop_activity: stops all USB activity, flushes & disables all endpts
+ * @gadget: gadget
+@@ -1051,7 +1089,7 @@ __acquires(ci->lock)
+ num += ci->hw_ep_max / 2;
+
+ spin_unlock(&ci->lock);
+- err = usb_ep_set_halt(&ci->ci_hw_ep[num].ep);
++ err = _ep_set_halt(&ci->ci_hw_ep[num].ep, 1, false);
+ spin_lock(&ci->lock);
+ if (!err)
+ isr_setup_status_phase(ci);
+@@ -1110,8 +1148,8 @@ delegate:
+
+ if (err < 0) {
+ spin_unlock(&ci->lock);
+- if (usb_ep_set_halt(&hwep->ep))
+- dev_err(ci->dev, "error: ep_set_halt\n");
++ if (_ep_set_halt(&hwep->ep, 1, false))
++ dev_err(ci->dev, "error: _ep_set_halt\n");
+ spin_lock(&ci->lock);
+ }
+ }
+@@ -1142,9 +1180,9 @@ __acquires(ci->lock)
+ err = isr_setup_status_phase(ci);
+ if (err < 0) {
+ spin_unlock(&ci->lock);
+- if (usb_ep_set_halt(&hwep->ep))
++ if (_ep_set_halt(&hwep->ep, 1, false))
+ dev_err(ci->dev,
+- "error: ep_set_halt\n");
++ "error: _ep_set_halt\n");
+ spin_lock(&ci->lock);
+ }
+ }
+@@ -1390,41 +1428,7 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
+ */
+ static int ep_set_halt(struct usb_ep *ep, int value)
+ {
+- struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
+- int direction, retval = 0;
+- unsigned long flags;
+-
+- if (ep == NULL || hwep->ep.desc == NULL)
+- return -EINVAL;
+-
+- if (usb_endpoint_xfer_isoc(hwep->ep.desc))
+- return -EOPNOTSUPP;
+-
+- spin_lock_irqsave(hwep->lock, flags);
+-
+-#ifndef STALL_IN
+- /* g_file_storage MS compliant but g_zero fails chapter 9 compliance */
+- if (value && hwep->type == USB_ENDPOINT_XFER_BULK && hwep->dir == TX &&
+- !list_empty(&hwep->qh.queue)) {
+- spin_unlock_irqrestore(hwep->lock, flags);
+- return -EAGAIN;
+- }
+-#endif
+-
+- direction = hwep->dir;
+- do {
+- retval |= hw_ep_set_halt(hwep->ci, hwep->num, hwep->dir, value);
+-
+- if (!value)
+- hwep->wedge = 0;
+-
+- if (hwep->type == USB_ENDPOINT_XFER_CONTROL)
+- hwep->dir = (hwep->dir == TX) ? RX : TX;
+-
+- } while (hwep->dir != direction);
+-
+- spin_unlock_irqrestore(hwep->lock, flags);
+- return retval;
++ return _ep_set_halt(ep, value, true);
+ }
+
+ /**
+diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
+index b2a540b43f97..b9ddf0c1ffe5 100644
+--- a/drivers/usb/core/config.c
++++ b/drivers/usb/core/config.c
+@@ -112,7 +112,7 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
+ cfgno, inum, asnum, ep->desc.bEndpointAddress);
+ ep->ss_ep_comp.bmAttributes = 16;
+ } else if (usb_endpoint_xfer_isoc(&ep->desc) &&
+- desc->bmAttributes > 2) {
++ USB_SS_MULT(desc->bmAttributes) > 3) {
+ dev_warn(ddev, "Isoc endpoint has Mult of %d in "
+ "config %d interface %d altsetting %d ep %d: "
+ "setting to 3\n", desc->bmAttributes + 1,
+@@ -121,7 +121,8 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
+ }
+
+ if (usb_endpoint_xfer_isoc(&ep->desc))
+- max_tx = (desc->bMaxBurst + 1) * (desc->bmAttributes + 1) *
++ max_tx = (desc->bMaxBurst + 1) *
++ (USB_SS_MULT(desc->bmAttributes)) *
+ usb_endpoint_maxp(&ep->desc);
+ else if (usb_endpoint_xfer_int(&ep->desc))
+ max_tx = usb_endpoint_maxp(&ep->desc) *
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index d85abfed84cc..f5a381945db2 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -54,6 +54,13 @@ static const struct usb_device_id usb_quirk_list[] = {
+ { USB_DEVICE(0x046d, 0x082d), .driver_info = USB_QUIRK_DELAY_INIT },
+ { USB_DEVICE(0x046d, 0x0843), .driver_info = USB_QUIRK_DELAY_INIT },
+
++ /* Logitech ConferenceCam CC3000e */
++ { USB_DEVICE(0x046d, 0x0847), .driver_info = USB_QUIRK_DELAY_INIT },
++ { USB_DEVICE(0x046d, 0x0848), .driver_info = USB_QUIRK_DELAY_INIT },
++
++ /* Logitech PTZ Pro Camera */
++ { USB_DEVICE(0x046d, 0x0853), .driver_info = USB_QUIRK_DELAY_INIT },
++
+ /* Logitech Quickcam Fusion */
+ { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME },
+
+@@ -78,6 +85,12 @@ static const struct usb_device_id usb_quirk_list[] = {
+ /* Philips PSC805 audio device */
+ { USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
+
++ /* Plantronic Audio 655 DSP */
++ { USB_DEVICE(0x047f, 0xc008), .driver_info = USB_QUIRK_RESET_RESUME },
++
++ /* Plantronic Audio 648 USB */
++ { USB_DEVICE(0x047f, 0xc013), .driver_info = USB_QUIRK_RESET_RESUME },
++
+ /* Artisman Watchdog Dongle */
+ { USB_DEVICE(0x04b4, 0x0526), .driver_info =
+ USB_QUIRK_CONFIG_INTF_STRINGS },
+diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
+index 9a8c936cd42c..41f841fa6c4d 100644
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -1498,10 +1498,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
+ * use Event Data TRBs, and we don't chain in a link TRB on short
+ * transfers, we're basically dividing by 1.
+ *
+- * xHCI 1.0 specification indicates that the Average TRB Length should
+- * be set to 8 for control endpoints.
++ * xHCI 1.0 and 1.1 specification indicates that the Average TRB Length
++ * should be set to 8 for control endpoints.
+ */
+- if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version == 0x100)
++ if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version >= 0x100)
+ ep_ctx->tx_info |= cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(8));
+ else
+ ep_ctx->tx_info |=
+@@ -1792,8 +1792,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
+ int size;
+ int i, j, num_ports;
+
+- if (timer_pending(&xhci->cmd_timer))
+- del_timer_sync(&xhci->cmd_timer);
++ del_timer_sync(&xhci->cmd_timer);
+
+ /* Free the Event Ring Segment Table and the actual Event Ring */
+ size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries);
+@@ -2321,6 +2320,10 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
+
+ INIT_LIST_HEAD(&xhci->cmd_list);
+
++ /* init command timeout timer */
++ setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout,
++ (unsigned long)xhci);
++
+ page_size = readl(&xhci->op_regs->page_size);
+ xhci_dbg_trace(xhci, trace_xhci_dbg_init,
+ "Supported page size register = 0x%x", page_size);
+@@ -2505,10 +2508,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
+ "Wrote ERST address to ir_set 0.");
+ xhci_print_ir_set(xhci, 0);
+
+- /* init command timeout timer */
+- setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout,
+- (unsigned long)xhci);
+-
+ /*
+ * XXX: Might need to set the Interrupter Moderation Register to
+ * something other than the default (~1ms minimum between interrupts).
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index b3a0a2275f5a..ad975a2975ca 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -302,6 +302,15 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci)
+ ret = xhci_handshake(&xhci->op_regs->cmd_ring,
+ CMD_RING_RUNNING, 0, 5 * 1000 * 1000);
+ if (ret < 0) {
++ /* we are about to kill xhci, give it one more chance */
++ xhci_write_64(xhci, temp_64 | CMD_RING_ABORT,
++ &xhci->op_regs->cmd_ring);
++ udelay(1000);
++ ret = xhci_handshake(&xhci->op_regs->cmd_ring,
++ CMD_RING_RUNNING, 0, 3 * 1000 * 1000);
++ if (ret == 0)
++ return 0;
++
+ xhci_err(xhci, "Stopped the command ring failed, "
+ "maybe the host is dead\n");
+ xhci->xhc_state |= XHCI_STATE_DYING;
+@@ -3041,9 +3050,11 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ struct xhci_td *td;
+ struct scatterlist *sg;
+ int num_sgs;
+- int trb_buff_len, this_sg_len, running_total;
++ int trb_buff_len, this_sg_len, running_total, ret;
+ unsigned int total_packet_count;
++ bool zero_length_needed;
+ bool first_trb;
++ int last_trb_num;
+ u64 addr;
+ bool more_trbs_coming;
+
+@@ -3059,13 +3070,27 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ total_packet_count = DIV_ROUND_UP(urb->transfer_buffer_length,
+ usb_endpoint_maxp(&urb->ep->desc));
+
+- trb_buff_len = prepare_transfer(xhci, xhci->devs[slot_id],
++ ret = prepare_transfer(xhci, xhci->devs[slot_id],
+ ep_index, urb->stream_id,
+ num_trbs, urb, 0, mem_flags);
+- if (trb_buff_len < 0)
+- return trb_buff_len;
++ if (ret < 0)
++ return ret;
+
+ urb_priv = urb->hcpriv;
++
++ /* Deal with URB_ZERO_PACKET - need one more td/trb */
++ zero_length_needed = urb->transfer_flags & URB_ZERO_PACKET &&
++ urb_priv->length == 2;
++ if (zero_length_needed) {
++ num_trbs++;
++ xhci_dbg(xhci, "Creating zero length td.\n");
++ ret = prepare_transfer(xhci, xhci->devs[slot_id],
++ ep_index, urb->stream_id,
++ 1, urb, 1, mem_flags);
++ if (ret < 0)
++ return ret;
++ }
++
+ td = urb_priv->td[0];
+
+ /*
+@@ -3095,6 +3120,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ trb_buff_len = urb->transfer_buffer_length;
+
+ first_trb = true;
++ last_trb_num = zero_length_needed ? 2 : 1;
+ /* Queue the first TRB, even if it's zero-length */
+ do {
+ u32 field = 0;
+@@ -3112,12 +3138,15 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ /* Chain all the TRBs together; clear the chain bit in the last
+ * TRB to indicate it's the last TRB in the chain.
+ */
+- if (num_trbs > 1) {
++ if (num_trbs > last_trb_num) {
+ field |= TRB_CHAIN;
+- } else {
+- /* FIXME - add check for ZERO_PACKET flag before this */
++ } else if (num_trbs == last_trb_num) {
+ td->last_trb = ep_ring->enqueue;
+ field |= TRB_IOC;
++ } else if (zero_length_needed && num_trbs == 1) {
++ trb_buff_len = 0;
++ urb_priv->td[1]->last_trb = ep_ring->enqueue;
++ field |= TRB_IOC;
+ }
+
+ /* Only set interrupt on short packet for IN endpoints */
+@@ -3179,7 +3208,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ if (running_total + trb_buff_len > urb->transfer_buffer_length)
+ trb_buff_len =
+ urb->transfer_buffer_length - running_total;
+- } while (running_total < urb->transfer_buffer_length);
++ } while (num_trbs > 0);
+
+ check_trb_math(urb, num_trbs, running_total);
+ giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
+@@ -3197,7 +3226,9 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ int num_trbs;
+ struct xhci_generic_trb *start_trb;
+ bool first_trb;
++ int last_trb_num;
+ bool more_trbs_coming;
++ bool zero_length_needed;
+ int start_cycle;
+ u32 field, length_field;
+
+@@ -3228,7 +3259,6 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ num_trbs++;
+ running_total += TRB_MAX_BUFF_SIZE;
+ }
+- /* FIXME: this doesn't deal with URB_ZERO_PACKET - need one more */
+
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
+ ep_index, urb->stream_id,
+@@ -3237,6 +3267,20 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ return ret;
+
+ urb_priv = urb->hcpriv;
++
++ /* Deal with URB_ZERO_PACKET - need one more td/trb */
++ zero_length_needed = urb->transfer_flags & URB_ZERO_PACKET &&
++ urb_priv->length == 2;
++ if (zero_length_needed) {
++ num_trbs++;
++ xhci_dbg(xhci, "Creating zero length td.\n");
++ ret = prepare_transfer(xhci, xhci->devs[slot_id],
++ ep_index, urb->stream_id,
++ 1, urb, 1, mem_flags);
++ if (ret < 0)
++ return ret;
++ }
++
+ td = urb_priv->td[0];
+
+ /*
+@@ -3258,7 +3302,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ trb_buff_len = urb->transfer_buffer_length;
+
+ first_trb = true;
+-
++ last_trb_num = zero_length_needed ? 2 : 1;
+ /* Queue the first TRB, even if it's zero-length */
+ do {
+ u32 remainder = 0;
+@@ -3275,12 +3319,15 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ /* Chain all the TRBs together; clear the chain bit in the last
+ * TRB to indicate it's the last TRB in the chain.
+ */
+- if (num_trbs > 1) {
++ if (num_trbs > last_trb_num) {
+ field |= TRB_CHAIN;
+- } else {
+- /* FIXME - add check for ZERO_PACKET flag before this */
++ } else if (num_trbs == last_trb_num) {
+ td->last_trb = ep_ring->enqueue;
+ field |= TRB_IOC;
++ } else if (zero_length_needed && num_trbs == 1) {
++ trb_buff_len = 0;
++ urb_priv->td[1]->last_trb = ep_ring->enqueue;
++ field |= TRB_IOC;
+ }
+
+ /* Only set interrupt on short packet for IN endpoints */
+@@ -3318,7 +3365,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ trb_buff_len = urb->transfer_buffer_length - running_total;
+ if (trb_buff_len > TRB_MAX_BUFF_SIZE)
+ trb_buff_len = TRB_MAX_BUFF_SIZE;
+- } while (running_total < urb->transfer_buffer_length);
++ } while (num_trbs > 0);
+
+ check_trb_math(urb, num_trbs, running_total);
+ giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
+@@ -3385,8 +3432,8 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
+ if (start_cycle == 0)
+ field |= 0x1;
+
+- /* xHCI 1.0 6.4.1.2.1: Transfer Type field */
+- if (xhci->hci_version == 0x100) {
++ /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */
++ if (xhci->hci_version >= 0x100) {
+ if (urb->transfer_buffer_length > 0) {
+ if (setup->bRequestType & USB_DIR_IN)
+ field |= TRB_TX_TYPE(TRB_DATA_IN);
+diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
+index c502c2277aeb..26f62b2b33f8 100644
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -146,7 +146,8 @@ static int xhci_start(struct xhci_hcd *xhci)
+ "waited %u microseconds.\n",
+ XHCI_MAX_HALT_USEC);
+ if (!ret)
+- xhci->xhc_state &= ~XHCI_STATE_HALTED;
++ xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING);
++
+ return ret;
+ }
+
+@@ -683,8 +684,11 @@ void xhci_stop(struct usb_hcd *hcd)
+ u32 temp;
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+
++ mutex_lock(&xhci->mutex);
++
+ if (!usb_hcd_is_primary_hcd(hcd)) {
+ xhci_only_stop_hcd(xhci->shared_hcd);
++ mutex_unlock(&xhci->mutex);
+ return;
+ }
+
+@@ -723,6 +727,7 @@ void xhci_stop(struct usb_hcd *hcd)
+ xhci_dbg_trace(xhci, trace_xhci_dbg_init,
+ "xhci_stop completed - status = %x",
+ readl(&xhci->op_regs->status));
++ mutex_unlock(&xhci->mutex);
+ }
+
+ /*
+@@ -1340,6 +1345,11 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)
+
+ if (usb_endpoint_xfer_isoc(&urb->ep->desc))
+ size = urb->number_of_packets;
++ else if (usb_endpoint_is_bulk_out(&urb->ep->desc) &&
++ urb->transfer_buffer_length > 0 &&
++ urb->transfer_flags & URB_ZERO_PACKET &&
++ !(urb->transfer_buffer_length % usb_endpoint_maxp(&urb->ep->desc)))
++ size = 2;
+ else
+ size = 1;
+
+@@ -3790,6 +3800,9 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
+
+ mutex_lock(&xhci->mutex);
+
++ if (xhci->xhc_state) /* dying or halted */
++ goto out;
++
+ if (!udev->slot_id) {
+ xhci_dbg_trace(xhci, trace_xhci_dbg_address,
+ "Bad Slot ID %d", udev->slot_id);
+diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c
+index 3ad5d19e4d04..23c794813e6a 100644
+--- a/drivers/usb/misc/chaoskey.c
++++ b/drivers/usb/misc/chaoskey.c
+@@ -472,7 +472,7 @@ static int chaoskey_rng_read(struct hwrng *rng, void *data,
+ if (this_time > max)
+ this_time = max;
+
+- memcpy(data, dev->buf, this_time);
++ memcpy(data, dev->buf + dev->used, this_time);
+
+ dev->used += this_time;
+
+diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c
+index 8bd8c5e26921..d5a140745640 100644
+--- a/drivers/usb/musb/musb_cppi41.c
++++ b/drivers/usb/musb/musb_cppi41.c
+@@ -614,7 +614,7 @@ static int cppi41_dma_controller_start(struct cppi41_dma_controller *controller)
+ {
+ struct musb *musb = controller->musb;
+ struct device *dev = musb->controller;
+- struct device_node *np = dev->of_node;
++ struct device_node *np = dev->parent->of_node;
+ struct cppi41_dma_channel *cppi41_channel;
+ int count;
+ int i;
+@@ -664,7 +664,7 @@ static int cppi41_dma_controller_start(struct cppi41_dma_controller *controller)
+ musb_dma->status = MUSB_DMA_STATUS_FREE;
+ musb_dma->max_len = SZ_4M;
+
+- dc = dma_request_slave_channel(dev, str);
++ dc = dma_request_slave_channel(dev->parent, str);
+ if (!dc) {
+ dev_err(dev, "Failed to request %s.\n", str);
+ ret = -EPROBE_DEFER;
+@@ -694,7 +694,7 @@ struct dma_controller *dma_controller_create(struct musb *musb,
+ struct cppi41_dma_controller *controller;
+ int ret = 0;
+
+- if (!musb->controller->of_node) {
++ if (!musb->controller->parent->of_node) {
+ dev_err(musb->controller, "Need DT for the DMA engine.\n");
+ return NULL;
+ }
+diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
+index 65d931a28a14..dcac5e7f19e0 100644
+--- a/drivers/usb/musb/musb_dsps.c
++++ b/drivers/usb/musb/musb_dsps.c
+@@ -225,8 +225,11 @@ static void dsps_musb_enable(struct musb *musb)
+
+ dsps_writel(reg_base, wrp->epintr_set, epmask);
+ dsps_writel(reg_base, wrp->coreintr_set, coremask);
+- /* start polling for ID change. */
+- mod_timer(&glue->timer, jiffies + msecs_to_jiffies(wrp->poll_timeout));
++ /* start polling for ID change in dual-role idle mode */
++ if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
++ musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
++ mod_timer(&glue->timer, jiffies +
++ msecs_to_jiffies(wrp->poll_timeout));
+ dsps_musb_try_idle(musb, 0);
+ }
+
+diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
+index deee68eafb72..0cd85f2ccddd 100644
+--- a/drivers/usb/phy/phy-generic.c
++++ b/drivers/usb/phy/phy-generic.c
+@@ -230,7 +230,8 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop,
+ clk_rate = pdata->clk_rate;
+ needs_vcc = pdata->needs_vcc;
+ if (gpio_is_valid(pdata->gpio_reset)) {
+- err = devm_gpio_request_one(dev, pdata->gpio_reset, 0,
++ err = devm_gpio_request_one(dev, pdata->gpio_reset,
++ GPIOF_ACTIVE_LOW,
+ dev_name(dev));
+ if (!err)
+ nop->gpiod_reset =
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 876423b8892c..7c8eb4c4c175 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -278,6 +278,10 @@ static void option_instat_callback(struct urb *urb);
+ #define ZTE_PRODUCT_MF622 0x0001
+ #define ZTE_PRODUCT_MF628 0x0015
+ #define ZTE_PRODUCT_MF626 0x0031
++#define ZTE_PRODUCT_ZM8620_X 0x0396
++#define ZTE_PRODUCT_ME3620_MBIM 0x0426
++#define ZTE_PRODUCT_ME3620_X 0x1432
++#define ZTE_PRODUCT_ME3620_L 0x1433
+ #define ZTE_PRODUCT_AC2726 0xfff1
+ #define ZTE_PRODUCT_MG880 0xfffd
+ #define ZTE_PRODUCT_CDMA_TECH 0xfffe
+@@ -544,6 +548,18 @@ static const struct option_blacklist_info zte_mc2716_z_blacklist = {
+ .sendsetup = BIT(1) | BIT(2) | BIT(3),
+ };
+
++static const struct option_blacklist_info zte_me3620_mbim_blacklist = {
++ .reserved = BIT(2) | BIT(3) | BIT(4),
++};
++
++static const struct option_blacklist_info zte_me3620_xl_blacklist = {
++ .reserved = BIT(3) | BIT(4) | BIT(5),
++};
++
++static const struct option_blacklist_info zte_zm8620_x_blacklist = {
++ .reserved = BIT(3) | BIT(4) | BIT(5),
++};
++
+ static const struct option_blacklist_info huawei_cdc12_blacklist = {
+ .reserved = BIT(1) | BIT(2),
+ };
+@@ -1591,6 +1607,14 @@ static const struct usb_device_id option_ids[] = {
+ .driver_info = (kernel_ulong_t)&zte_ad3812_z_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2716, 0xff, 0xff, 0xff),
+ .driver_info = (kernel_ulong_t)&zte_mc2716_z_blacklist },
++ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_L),
++ .driver_info = (kernel_ulong_t)&zte_me3620_xl_blacklist },
++ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_MBIM),
++ .driver_info = (kernel_ulong_t)&zte_me3620_mbim_blacklist },
++ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_X),
++ .driver_info = (kernel_ulong_t)&zte_me3620_xl_blacklist },
++ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ZM8620_X),
++ .driver_info = (kernel_ulong_t)&zte_zm8620_x_blacklist },
+ { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) },
+ { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) },
+ { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) },
+diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
+index 6c3734d2b45a..d3ea90bef84d 100644
+--- a/drivers/usb/serial/whiteheat.c
++++ b/drivers/usb/serial/whiteheat.c
+@@ -80,6 +80,8 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
+ static int whiteheat_firmware_attach(struct usb_serial *serial);
+
+ /* function prototypes for the Connect Tech WhiteHEAT serial converter */
++static int whiteheat_probe(struct usb_serial *serial,
++ const struct usb_device_id *id);
+ static int whiteheat_attach(struct usb_serial *serial);
+ static void whiteheat_release(struct usb_serial *serial);
+ static int whiteheat_port_probe(struct usb_serial_port *port);
+@@ -116,6 +118,7 @@ static struct usb_serial_driver whiteheat_device = {
+ .description = "Connect Tech - WhiteHEAT",
+ .id_table = id_table_std,
+ .num_ports = 4,
++ .probe = whiteheat_probe,
+ .attach = whiteheat_attach,
+ .release = whiteheat_release,
+ .port_probe = whiteheat_port_probe,
+@@ -217,6 +220,34 @@ static int whiteheat_firmware_attach(struct usb_serial *serial)
+ /*****************************************************************************
+ * Connect Tech's White Heat serial driver functions
+ *****************************************************************************/
++
++static int whiteheat_probe(struct usb_serial *serial,
++ const struct usb_device_id *id)
++{
++ struct usb_host_interface *iface_desc;
++ struct usb_endpoint_descriptor *endpoint;
++ size_t num_bulk_in = 0;
++ size_t num_bulk_out = 0;
++ size_t min_num_bulk;
++ unsigned int i;
++
++ iface_desc = serial->interface->cur_altsetting;
++
++ for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
++ endpoint = &iface_desc->endpoint[i].desc;
++ if (usb_endpoint_is_bulk_in(endpoint))
++ ++num_bulk_in;
++ if (usb_endpoint_is_bulk_out(endpoint))
++ ++num_bulk_out;
++ }
++
++ min_num_bulk = COMMAND_PORT + 1;
++ if (num_bulk_in < min_num_bulk || num_bulk_out < min_num_bulk)
++ return -ENODEV;
++
++ return 0;
++}
++
+ static int whiteheat_attach(struct usb_serial *serial)
+ {
+ struct usb_serial_port *command_port;
+diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
+index 109462303087..d1e1e1704da1 100644
+--- a/drivers/video/fbdev/Kconfig
++++ b/drivers/video/fbdev/Kconfig
+@@ -298,7 +298,7 @@ config FB_ARMCLCD
+
+ # Helper logic selected only by the ARM Versatile platform family.
+ config PLAT_VERSATILE_CLCD
+- def_bool ARCH_VERSATILE || ARCH_REALVIEW || ARCH_VEXPRESS
++ def_bool ARCH_VERSATILE || ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_INTEGRATOR
+ depends on ARM
+ depends on FB_ARMCLCD && FB=y
+
+diff --git a/drivers/watchdog/sunxi_wdt.c b/drivers/watchdog/sunxi_wdt.c
+index a29afb37c48c..47bd8a14d01f 100644
+--- a/drivers/watchdog/sunxi_wdt.c
++++ b/drivers/watchdog/sunxi_wdt.c
+@@ -184,7 +184,7 @@ static int sunxi_wdt_start(struct watchdog_device *wdt_dev)
+ /* Set system reset function */
+ reg = readl(wdt_base + regs->wdt_cfg);
+ reg &= ~(regs->wdt_reset_mask);
+- reg |= ~(regs->wdt_reset_val);
++ reg |= regs->wdt_reset_val;
+ writel(reg, wdt_base + regs->wdt_cfg);
+
+ /* Enable watchdog */
+diff --git a/fs/block_dev.c b/fs/block_dev.c
+index c7e4163ede87..ccfd31f1df3a 100644
+--- a/fs/block_dev.c
++++ b/fs/block_dev.c
+@@ -1234,6 +1234,13 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
+ goto out_clear;
+ }
+ bd_set_size(bdev, (loff_t)bdev->bd_part->nr_sects << 9);
++ /*
++ * If the partition is not aligned on a page
++ * boundary, we can't do dax I/O to it.
++ */
++ if ((bdev->bd_part->start_sect % (PAGE_SIZE / 512)) ||
++ (bdev->bd_part->nr_sects % (PAGE_SIZE / 512)))
++ bdev->bd_inode->i_flags &= ~S_DAX;
+ }
+ } else {
+ if (bdev->bd_contains == bdev) {
+diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
+index c32d226bfecc..885f533a34d9 100644
+--- a/fs/btrfs/extent_io.c
++++ b/fs/btrfs/extent_io.c
+@@ -2795,7 +2795,8 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
+ bio_end_io_t end_io_func,
+ int mirror_num,
+ unsigned long prev_bio_flags,
+- unsigned long bio_flags)
++ unsigned long bio_flags,
++ bool force_bio_submit)
+ {
+ int ret = 0;
+ struct bio *bio;
+@@ -2813,6 +2814,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
+ contig = bio_end_sector(bio) == sector;
+
+ if (prev_bio_flags != bio_flags || !contig ||
++ force_bio_submit ||
+ merge_bio(rw, tree, page, offset, page_size, bio, bio_flags) ||
+ bio_add_page(bio, page, page_size, offset) < page_size) {
+ ret = submit_one_bio(rw, bio, mirror_num,
+@@ -2906,7 +2908,8 @@ static int __do_readpage(struct extent_io_tree *tree,
+ get_extent_t *get_extent,
+ struct extent_map **em_cached,
+ struct bio **bio, int mirror_num,
+- unsigned long *bio_flags, int rw)
++ unsigned long *bio_flags, int rw,
++ u64 *prev_em_start)
+ {
+ struct inode *inode = page->mapping->host;
+ u64 start = page_offset(page);
+@@ -2954,6 +2957,7 @@ static int __do_readpage(struct extent_io_tree *tree,
+ }
+ while (cur <= end) {
+ unsigned long pnr = (last_byte >> PAGE_CACHE_SHIFT) + 1;
++ bool force_bio_submit = false;
+
+ if (cur >= last_byte) {
+ char *userpage;
+@@ -3004,6 +3008,49 @@ static int __do_readpage(struct extent_io_tree *tree,
+ block_start = em->block_start;
+ if (test_bit(EXTENT_FLAG_PREALLOC, &em->flags))
+ block_start = EXTENT_MAP_HOLE;
++
++ /*
++ * If we have a file range that points to a compressed extent
++ * and it's followed by a consecutive file range that points to
++ * to the same compressed extent (possibly with a different
++ * offset and/or length, so it either points to the whole extent
++ * or only part of it), we must make sure we do not submit a
++ * single bio to populate the pages for the 2 ranges because
++ * this makes the compressed extent read zero out the pages
++ * belonging to the 2nd range. Imagine the following scenario:
++ *
++ * File layout
++ * [0 - 8K] [8K - 24K]
++ * | |
++ * | |
++ * points to extent X, points to extent X,
++ * offset 4K, length of 8K offset 0, length 16K
++ *
++ * [extent X, compressed length = 4K uncompressed length = 16K]
++ *
++ * If the bio to read the compressed extent covers both ranges,
++ * it will decompress extent X into the pages belonging to the
++ * first range and then it will stop, zeroing out the remaining
++ * pages that belong to the other range that points to extent X.
++ * So here we make sure we submit 2 bios, one for the first
++ * range and another one for the third range. Both will target
++ * the same physical extent from disk, but we can't currently
++ * make the compressed bio endio callback populate the pages
++ * for both ranges because each compressed bio is tightly
++ * coupled with a single extent map, and each range can have
++ * an extent map with a different offset value relative to the
++ * uncompressed data of our extent and different lengths. This
++ * is a corner case so we prioritize correctness over
++ * non-optimal behavior (submitting 2 bios for the same extent).
++ */
++ if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags) &&
++ prev_em_start && *prev_em_start != (u64)-1 &&
++ *prev_em_start != em->orig_start)
++ force_bio_submit = true;
++
++ if (prev_em_start)
++ *prev_em_start = em->orig_start;
++
+ free_extent_map(em);
+ em = NULL;
+
+@@ -3053,7 +3100,8 @@ static int __do_readpage(struct extent_io_tree *tree,
+ bdev, bio, pnr,
+ end_bio_extent_readpage, mirror_num,
+ *bio_flags,
+- this_bio_flag);
++ this_bio_flag,
++ force_bio_submit);
+ if (!ret) {
+ nr++;
+ *bio_flags = this_bio_flag;
+@@ -3080,7 +3128,8 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
+ get_extent_t *get_extent,
+ struct extent_map **em_cached,
+ struct bio **bio, int mirror_num,
+- unsigned long *bio_flags, int rw)
++ unsigned long *bio_flags, int rw,
++ u64 *prev_em_start)
+ {
+ struct inode *inode;
+ struct btrfs_ordered_extent *ordered;
+@@ -3100,7 +3149,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
+
+ for (index = 0; index < nr_pages; index++) {
+ __do_readpage(tree, pages[index], get_extent, em_cached, bio,
+- mirror_num, bio_flags, rw);
++ mirror_num, bio_flags, rw, prev_em_start);
+ page_cache_release(pages[index]);
+ }
+ }
+@@ -3110,7 +3159,8 @@ static void __extent_readpages(struct extent_io_tree *tree,
+ int nr_pages, get_extent_t *get_extent,
+ struct extent_map **em_cached,
+ struct bio **bio, int mirror_num,
+- unsigned long *bio_flags, int rw)
++ unsigned long *bio_flags, int rw,
++ u64 *prev_em_start)
+ {
+ u64 start = 0;
+ u64 end = 0;
+@@ -3131,7 +3181,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
+ index - first_index, start,
+ end, get_extent, em_cached,
+ bio, mirror_num, bio_flags,
+- rw);
++ rw, prev_em_start);
+ start = page_start;
+ end = start + PAGE_CACHE_SIZE - 1;
+ first_index = index;
+@@ -3142,7 +3192,8 @@ static void __extent_readpages(struct extent_io_tree *tree,
+ __do_contiguous_readpages(tree, &pages[first_index],
+ index - first_index, start,
+ end, get_extent, em_cached, bio,
+- mirror_num, bio_flags, rw);
++ mirror_num, bio_flags, rw,
++ prev_em_start);
+ }
+
+ static int __extent_read_full_page(struct extent_io_tree *tree,
+@@ -3168,7 +3219,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
+ }
+
+ ret = __do_readpage(tree, page, get_extent, NULL, bio, mirror_num,
+- bio_flags, rw);
++ bio_flags, rw, NULL);
+ return ret;
+ }
+
+@@ -3194,7 +3245,7 @@ int extent_read_full_page_nolock(struct extent_io_tree *tree, struct page *page,
+ int ret;
+
+ ret = __do_readpage(tree, page, get_extent, NULL, &bio, mirror_num,
+- &bio_flags, READ);
++ &bio_flags, READ, NULL);
+ if (bio)
+ ret = submit_one_bio(READ, bio, mirror_num, bio_flags);
+ return ret;
+@@ -3447,7 +3498,7 @@ static noinline_for_stack int __extent_writepage_io(struct inode *inode,
+ sector, iosize, pg_offset,
+ bdev, &epd->bio, max_nr,
+ end_bio_extent_writepage,
+- 0, 0, 0);
++ 0, 0, 0, false);
+ if (ret)
+ SetPageError(page);
+ }
+@@ -3749,7 +3800,7 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb,
+ ret = submit_extent_page(rw, tree, p, offset >> 9,
+ PAGE_CACHE_SIZE, 0, bdev, &epd->bio,
+ -1, end_bio_extent_buffer_writepage,
+- 0, epd->bio_flags, bio_flags);
++ 0, epd->bio_flags, bio_flags, false);
+ epd->bio_flags = bio_flags;
+ if (ret) {
+ set_btree_ioerr(p);
+@@ -4153,6 +4204,7 @@ int extent_readpages(struct extent_io_tree *tree,
+ struct page *page;
+ struct extent_map *em_cached = NULL;
+ int nr = 0;
++ u64 prev_em_start = (u64)-1;
+
+ for (page_idx = 0; page_idx < nr_pages; page_idx++) {
+ page = list_entry(pages->prev, struct page, lru);
+@@ -4169,12 +4221,12 @@ int extent_readpages(struct extent_io_tree *tree,
+ if (nr < ARRAY_SIZE(pagepool))
+ continue;
+ __extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
+- &bio, 0, &bio_flags, READ);
++ &bio, 0, &bio_flags, READ, &prev_em_start);
+ nr = 0;
+ }
+ if (nr)
+ __extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
+- &bio, 0, &bio_flags, READ);
++ &bio, 0, &bio_flags, READ, &prev_em_start);
+
+ if (em_cached)
+ free_extent_map(em_cached);
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index 8bb013672aee..e3b39f0c4666 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -5035,7 +5035,8 @@ void btrfs_evict_inode(struct inode *inode)
+ goto no_delete;
+ }
+ /* do we really want it for ->i_nlink > 0 and zero btrfs_root_refs? */
+- btrfs_wait_ordered_range(inode, 0, (u64)-1);
++ if (!special_file(inode->i_mode))
++ btrfs_wait_ordered_range(inode, 0, (u64)-1);
+
+ btrfs_free_io_failure_record(inode, 0, (u64)-1);
+
+diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
+index aa0dc2573374..afa09fce8151 100644
+--- a/fs/cifs/cifsencrypt.c
++++ b/fs/cifs/cifsencrypt.c
+@@ -444,6 +444,48 @@ find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp)
+ return 0;
+ }
+
++/* Server has provided av pairs/target info in the type 2 challenge
++ * packet and we have plucked it and stored within smb session.
++ * We parse that blob here to find the server given timestamp
++ * as part of ntlmv2 authentication (or local current time as
++ * default in case of failure)
++ */
++static __le64
++find_timestamp(struct cifs_ses *ses)
++{
++ unsigned int attrsize;
++ unsigned int type;
++ unsigned int onesize = sizeof(struct ntlmssp2_name);
++ unsigned char *blobptr;
++ unsigned char *blobend;
++ struct ntlmssp2_name *attrptr;
++
++ if (!ses->auth_key.len || !ses->auth_key.response)
++ return 0;
++
++ blobptr = ses->auth_key.response;
++ blobend = blobptr + ses->auth_key.len;
++
++ while (blobptr + onesize < blobend) {
++ attrptr = (struct ntlmssp2_name *) blobptr;
++ type = le16_to_cpu(attrptr->type);
++ if (type == NTLMSSP_AV_EOL)
++ break;
++ blobptr += 2; /* advance attr type */
++ attrsize = le16_to_cpu(attrptr->length);
++ blobptr += 2; /* advance attr size */
++ if (blobptr + attrsize > blobend)
++ break;
++ if (type == NTLMSSP_AV_TIMESTAMP) {
++ if (attrsize == sizeof(u64))
++ return *((__le64 *)blobptr);
++ }
++ blobptr += attrsize; /* advance attr value */
++ }
++
++ return cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
++}
++
+ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
+ const struct nls_table *nls_cp)
+ {
+@@ -641,6 +683,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
+ struct ntlmv2_resp *ntlmv2;
+ char ntlmv2_hash[16];
+ unsigned char *tiblob = NULL; /* target info blob */
++ __le64 rsp_timestamp;
+
+ if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED) {
+ if (!ses->domainName) {
+@@ -659,6 +702,12 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
+ }
+ }
+
++ /* Must be within 5 minutes of the server (or in range +/-2h
++ * in case of Mac OS X), so simply carry over server timestamp
++ * (as Windows 7 does)
++ */
++ rsp_timestamp = find_timestamp(ses);
++
+ baselen = CIFS_SESS_KEY_SIZE + sizeof(struct ntlmv2_resp);
+ tilen = ses->auth_key.len;
+ tiblob = ses->auth_key.response;
+@@ -675,8 +724,8 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
+ (ses->auth_key.response + CIFS_SESS_KEY_SIZE);
+ ntlmv2->blob_signature = cpu_to_le32(0x00000101);
+ ntlmv2->reserved = 0;
+- /* Must be within 5 minutes of the server */
+- ntlmv2->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
++ ntlmv2->time = rsp_timestamp;
++
+ get_random_bytes(&ntlmv2->client_chal, sizeof(ntlmv2->client_chal));
+ ntlmv2->reserved2 = 0;
+
+diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
+index f621b44cb800..6b66dd5d1540 100644
+--- a/fs/cifs/inode.c
++++ b/fs/cifs/inode.c
+@@ -2034,7 +2034,6 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
+ struct tcon_link *tlink = NULL;
+ struct cifs_tcon *tcon = NULL;
+ struct TCP_Server_Info *server;
+- struct cifs_io_parms io_parms;
+
+ /*
+ * To avoid spurious oplock breaks from server, in the case of
+@@ -2056,18 +2055,6 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
+ rc = -ENOSYS;
+ cifsFileInfo_put(open_file);
+ cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc);
+- if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
+- unsigned int bytes_written;
+-
+- io_parms.netfid = open_file->fid.netfid;
+- io_parms.pid = open_file->pid;
+- io_parms.tcon = tcon;
+- io_parms.offset = 0;
+- io_parms.length = attrs->ia_size;
+- rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
+- NULL, NULL, 1);
+- cifs_dbg(FYI, "Wrt seteof rc %d\n", rc);
+- }
+ } else
+ rc = -EINVAL;
+
+@@ -2093,28 +2080,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
+ else
+ rc = -ENOSYS;
+ cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc);
+- if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
+- __u16 netfid;
+- int oplock = 0;
+
+- rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN,
+- GENERIC_WRITE, CREATE_NOT_DIR, &netfid,
+- &oplock, NULL, cifs_sb->local_nls,
+- cifs_remap(cifs_sb));
+- if (rc == 0) {
+- unsigned int bytes_written;
+-
+- io_parms.netfid = netfid;
+- io_parms.pid = current->tgid;
+- io_parms.tcon = tcon;
+- io_parms.offset = 0;
+- io_parms.length = attrs->ia_size;
+- rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL,
+- NULL, 1);
+- cifs_dbg(FYI, "wrt seteof rc %d\n", rc);
+- CIFSSMBClose(xid, tcon, netfid);
+- }
+- }
+ if (tlink)
+ cifs_put_tlink(tlink);
+
+diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
+index 54daee5ad4c1..1678b9cb94c7 100644
+--- a/fs/cifs/smb2ops.c
++++ b/fs/cifs/smb2ops.c
+@@ -50,9 +50,13 @@ change_conf(struct TCP_Server_Info *server)
+ break;
+ default:
+ server->echoes = true;
+- server->oplocks = true;
++ if (enable_oplocks) {
++ server->oplocks = true;
++ server->oplock_credits = 1;
++ } else
++ server->oplocks = false;
++
+ server->echo_credits = 1;
+- server->oplock_credits = 1;
+ }
+ server->credits -= server->echo_credits + server->oplock_credits;
+ return 0;
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 54cbe19d9c08..894f259d3989 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -46,6 +46,7 @@
+ #include "smb2status.h"
+ #include "smb2glob.h"
+ #include "cifspdu.h"
++#include "cifs_spnego.h"
+
+ /*
+ * The following table defines the expected "StructureSize" of SMB2 requests
+@@ -427,19 +428,15 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
+ cifs_dbg(FYI, "missing security blob on negprot\n");
+
+ rc = cifs_enable_signing(server, ses->sign);
+-#ifdef CONFIG_SMB2_ASN1 /* BB REMOVEME when updated asn1.c ready */
+ if (rc)
+ goto neg_exit;
+- if (blob_length)
++ if (blob_length) {
+ rc = decode_negTokenInit(security_blob, blob_length, server);
+- if (rc == 1)
+- rc = 0;
+- else if (rc == 0) {
+- rc = -EIO;
+- goto neg_exit;
++ if (rc == 1)
++ rc = 0;
++ else if (rc == 0)
++ rc = -EIO;
+ }
+-#endif
+-
+ neg_exit:
+ free_rsp_buf(resp_buftype, rsp);
+ return rc;
+@@ -533,7 +530,8 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
+ __le32 phase = NtLmNegotiate; /* NTLMSSP, if needed, is multistage */
+ struct TCP_Server_Info *server = ses->server;
+ u16 blob_length = 0;
+- char *security_blob;
++ struct key *spnego_key = NULL;
++ char *security_blob = NULL;
+ char *ntlmssp_blob = NULL;
+ bool use_spnego = false; /* else use raw ntlmssp */
+
+@@ -561,7 +559,8 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
+ ses->ntlmssp->sesskey_per_smbsess = true;
+
+ /* FIXME: allow for other auth types besides NTLMSSP (e.g. krb5) */
+- ses->sectype = RawNTLMSSP;
++ if (ses->sectype != Kerberos && ses->sectype != RawNTLMSSP)
++ ses->sectype = RawNTLMSSP;
+
+ ssetup_ntlmssp_authenticate:
+ if (phase == NtLmChallenge)
+@@ -590,7 +589,48 @@ ssetup_ntlmssp_authenticate:
+ iov[0].iov_base = (char *)req;
+ /* 4 for rfc1002 length field and 1 for pad */
+ iov[0].iov_len = get_rfc1002_length(req) + 4 - 1;
+- if (phase == NtLmNegotiate) {
++
++ if (ses->sectype == Kerberos) {
++#ifdef CONFIG_CIFS_UPCALL
++ struct cifs_spnego_msg *msg;
++
++ spnego_key = cifs_get_spnego_key(ses);
++ if (IS_ERR(spnego_key)) {
++ rc = PTR_ERR(spnego_key);
++ spnego_key = NULL;
++ goto ssetup_exit;
++ }
++
++ msg = spnego_key->payload.data;
++ /*
++ * check version field to make sure that cifs.upcall is
++ * sending us a response in an expected form
++ */
++ if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) {
++ cifs_dbg(VFS,
++ "bad cifs.upcall version. Expected %d got %d",
++ CIFS_SPNEGO_UPCALL_VERSION, msg->version);
++ rc = -EKEYREJECTED;
++ goto ssetup_exit;
++ }
++ ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len,
++ GFP_KERNEL);
++ if (!ses->auth_key.response) {
++ cifs_dbg(VFS,
++ "Kerberos can't allocate (%u bytes) memory",
++ msg->sesskey_len);
++ rc = -ENOMEM;
++ goto ssetup_exit;
++ }
++ ses->auth_key.len = msg->sesskey_len;
++ blob_length = msg->secblob_len;
++ iov[1].iov_base = msg->data + msg->sesskey_len;
++ iov[1].iov_len = blob_length;
++#else
++ rc = -EOPNOTSUPP;
++ goto ssetup_exit;
++#endif /* CONFIG_CIFS_UPCALL */
++ } else if (phase == NtLmNegotiate) { /* if not krb5 must be ntlmssp */
+ ntlmssp_blob = kmalloc(sizeof(struct _NEGOTIATE_MESSAGE),
+ GFP_KERNEL);
+ if (ntlmssp_blob == NULL) {
+@@ -613,6 +653,8 @@ ssetup_ntlmssp_authenticate:
+ /* with raw NTLMSSP we don't encapsulate in SPNEGO */
+ security_blob = ntlmssp_blob;
+ }
++ iov[1].iov_base = security_blob;
++ iov[1].iov_len = blob_length;
+ } else if (phase == NtLmAuthenticate) {
+ req->hdr.SessionId = ses->Suid;
+ ntlmssp_blob = kzalloc(sizeof(struct _NEGOTIATE_MESSAGE) + 500,
+@@ -640,6 +682,8 @@ ssetup_ntlmssp_authenticate:
+ } else {
+ security_blob = ntlmssp_blob;
+ }
++ iov[1].iov_base = security_blob;
++ iov[1].iov_len = blob_length;
+ } else {
+ cifs_dbg(VFS, "illegal ntlmssp phase\n");
+ rc = -EIO;
+@@ -651,8 +695,6 @@ ssetup_ntlmssp_authenticate:
+ cpu_to_le16(sizeof(struct smb2_sess_setup_req) -
+ 1 /* pad */ - 4 /* rfc1001 len */);
+ req->SecurityBufferLength = cpu_to_le16(blob_length);
+- iov[1].iov_base = security_blob;
+- iov[1].iov_len = blob_length;
+
+ inc_rfc1001_len(req, blob_length - 1 /* pad */);
+
+@@ -663,6 +705,7 @@ ssetup_ntlmssp_authenticate:
+
+ kfree(security_blob);
+ rsp = (struct smb2_sess_setup_rsp *)iov[0].iov_base;
++ ses->Suid = rsp->hdr.SessionId;
+ if (resp_buftype != CIFS_NO_BUFFER &&
+ rsp->hdr.Status == STATUS_MORE_PROCESSING_REQUIRED) {
+ if (phase != NtLmNegotiate) {
+@@ -680,7 +723,6 @@ ssetup_ntlmssp_authenticate:
+ /* NTLMSSP Negotiate sent now processing challenge (response) */
+ phase = NtLmChallenge; /* process ntlmssp challenge */
+ rc = 0; /* MORE_PROCESSING is not an error here but expected */
+- ses->Suid = rsp->hdr.SessionId;
+ rc = decode_ntlmssp_challenge(rsp->Buffer,
+ le16_to_cpu(rsp->SecurityBufferLength), ses);
+ }
+@@ -737,6 +779,10 @@ keygen_exit:
+ kfree(ses->auth_key.response);
+ ses->auth_key.response = NULL;
+ }
++ if (spnego_key) {
++ key_invalidate(spnego_key);
++ key_put(spnego_key);
++ }
+ kfree(ses->ntlmssp);
+
+ return rc;
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 5d03eb0ec0ac..0046ab7d4f3d 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -1676,7 +1676,8 @@ void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op)
+ DCACHE_OP_COMPARE |
+ DCACHE_OP_REVALIDATE |
+ DCACHE_OP_WEAK_REVALIDATE |
+- DCACHE_OP_DELETE ));
++ DCACHE_OP_DELETE |
++ DCACHE_OP_SELECT_INODE));
+ dentry->d_op = op;
+ if (!op)
+ return;
+@@ -1692,6 +1693,8 @@ void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op)
+ dentry->d_flags |= DCACHE_OP_DELETE;
+ if (op->d_prune)
+ dentry->d_flags |= DCACHE_OP_PRUNE;
++ if (op->d_select_inode)
++ dentry->d_flags |= DCACHE_OP_SELECT_INODE;
+
+ }
+ EXPORT_SYMBOL(d_set_d_op);
+@@ -2923,6 +2926,13 @@ restart:
+
+ if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
+ struct mount *parent = ACCESS_ONCE(mnt->mnt_parent);
++ /* Escaped? */
++ if (dentry != vfsmnt->mnt_root) {
++ bptr = *buffer;
++ blen = *buflen;
++ error = 3;
++ break;
++ }
+ /* Global root? */
+ if (mnt != parent) {
+ dentry = ACCESS_ONCE(mnt->mnt_mountpoint);
+diff --git a/fs/internal.h b/fs/internal.h
+index 01dce1d1476b..4d5af583ab03 100644
+--- a/fs/internal.h
++++ b/fs/internal.h
+@@ -107,6 +107,7 @@ extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
+ extern long do_handle_open(int mountdirfd,
+ struct file_handle __user *ufh, int open_flag);
+ extern int open_check_o_direct(struct file *f);
++extern int vfs_open(const struct path *, struct file *, const struct cred *);
+
+ /*
+ * inode.c
+diff --git a/fs/namei.c b/fs/namei.c
+index fe30d3be43a8..ccd7f98d85b9 100644
+--- a/fs/namei.c
++++ b/fs/namei.c
+@@ -505,6 +505,24 @@ struct nameidata {
+ char *saved_names[MAX_NESTED_LINKS + 1];
+ };
+
++/**
++ * path_connected - Verify that a path->dentry is below path->mnt.mnt_root
++ * @path: nameidate to verify
++ *
++ * Rename can sometimes move a file or directory outside of a bind
++ * mount, path_connected allows those cases to be detected.
++ */
++static bool path_connected(const struct path *path)
++{
++ struct vfsmount *mnt = path->mnt;
++
++ /* Only bind mounts can have disconnected paths */
++ if (mnt->mnt_root == mnt->mnt_sb->s_root)
++ return true;
++
++ return is_subdir(path->dentry, mnt->mnt_root);
++}
++
+ /*
+ * Path walking has 2 modes, rcu-walk and ref-walk (see
+ * Documentation/filesystems/path-lookup.txt). In situations when we can't
+@@ -1194,6 +1212,8 @@ static int follow_dotdot_rcu(struct nameidata *nd)
+ goto failed;
+ nd->path.dentry = parent;
+ nd->seq = seq;
++ if (unlikely(!path_connected(&nd->path)))
++ goto failed;
+ break;
+ }
+ if (!follow_up_rcu(&nd->path))
+@@ -1290,7 +1310,7 @@ static void follow_mount(struct path *path)
+ }
+ }
+
+-static void follow_dotdot(struct nameidata *nd)
++static int follow_dotdot(struct nameidata *nd)
+ {
+ if (!nd->root.mnt)
+ set_root(nd);
+@@ -1306,6 +1326,10 @@ static void follow_dotdot(struct nameidata *nd)
+ /* rare case of legitimate dget_parent()... */
+ nd->path.dentry = dget_parent(nd->path.dentry);
+ dput(old);
++ if (unlikely(!path_connected(&nd->path))) {
++ path_put(&nd->path);
++ return -ENOENT;
++ }
+ break;
+ }
+ if (!follow_up(&nd->path))
+@@ -1313,6 +1337,7 @@ static void follow_dotdot(struct nameidata *nd)
+ }
+ follow_mount(&nd->path);
+ nd->inode = nd->path.dentry->d_inode;
++ return 0;
+ }
+
+ /*
+@@ -1428,8 +1453,6 @@ static int lookup_fast(struct nameidata *nd,
+ negative = d_is_negative(dentry);
+ if (read_seqcount_retry(&dentry->d_seq, seq))
+ return -ECHILD;
+- if (negative)
+- return -ENOENT;
+
+ /*
+ * This sequence count validates that the parent had no
+@@ -1450,6 +1473,12 @@ static int lookup_fast(struct nameidata *nd,
+ goto unlazy;
+ }
+ }
++ /*
++ * Note: do negative dentry check after revalidation in
++ * case that drops it.
++ */
++ if (negative)
++ return -ENOENT;
+ path->mnt = mnt;
+ path->dentry = dentry;
+ if (likely(__follow_mount_rcu(nd, path, inode)))
+@@ -1541,7 +1570,7 @@ static inline int handle_dots(struct nameidata *nd, int type)
+ if (follow_dotdot_rcu(nd))
+ return -ECHILD;
+ } else
+- follow_dotdot(nd);
++ return follow_dotdot(nd);
+ }
+ return 0;
+ }
+@@ -2290,7 +2319,7 @@ mountpoint_last(struct nameidata *nd, struct path *path)
+ if (unlikely(nd->last_type != LAST_NORM)) {
+ error = handle_dots(nd, nd->last_type);
+ if (error)
+- goto out;
++ return error;
+ dentry = dget(nd->path.dentry);
+ goto done;
+ }
+diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c
+index a46bf6de9ce4..fb1fb2774d34 100644
+--- a/fs/nfs/filelayout/filelayout.c
++++ b/fs/nfs/filelayout/filelayout.c
+@@ -628,23 +628,18 @@ out_put:
+ goto out;
+ }
+
+-static void filelayout_free_fh_array(struct nfs4_filelayout_segment *fl)
++static void _filelayout_free_lseg(struct nfs4_filelayout_segment *fl)
+ {
+ int i;
+
+- for (i = 0; i < fl->num_fh; i++) {
+- if (!fl->fh_array[i])
+- break;
+- kfree(fl->fh_array[i]);
++ if (fl->fh_array) {
++ for (i = 0; i < fl->num_fh; i++) {
++ if (!fl->fh_array[i])
++ break;
++ kfree(fl->fh_array[i]);
++ }
++ kfree(fl->fh_array);
+ }
+- kfree(fl->fh_array);
+- fl->fh_array = NULL;
+-}
+-
+-static void
+-_filelayout_free_lseg(struct nfs4_filelayout_segment *fl)
+-{
+- filelayout_free_fh_array(fl);
+ kfree(fl);
+ }
+
+@@ -715,21 +710,21 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo,
+ /* Do we want to use a mempool here? */
+ fl->fh_array[i] = kmalloc(sizeof(struct nfs_fh), gfp_flags);
+ if (!fl->fh_array[i])
+- goto out_err_free;
++ goto out_err;
+
+ p = xdr_inline_decode(&stream, 4);
+ if (unlikely(!p))
+- goto out_err_free;
++ goto out_err;
+ fl->fh_array[i]->size = be32_to_cpup(p++);
+ if (sizeof(struct nfs_fh) < fl->fh_array[i]->size) {
+ printk(KERN_ERR "NFS: Too big fh %d received %d\n",
+ i, fl->fh_array[i]->size);
+- goto out_err_free;
++ goto out_err;
+ }
+
+ p = xdr_inline_decode(&stream, fl->fh_array[i]->size);
+ if (unlikely(!p))
+- goto out_err_free;
++ goto out_err;
+ memcpy(fl->fh_array[i]->data, p, fl->fh_array[i]->size);
+ dprintk("DEBUG: %s: fh len %d\n", __func__,
+ fl->fh_array[i]->size);
+@@ -738,8 +733,6 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo,
+ __free_page(scratch);
+ return 0;
+
+-out_err_free:
+- filelayout_free_fh_array(fl);
+ out_err:
+ __free_page(scratch);
+ return -EIO;
+diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
+index 069914ce7641..93d355c8b467 100644
+--- a/fs/nfs/pagelist.c
++++ b/fs/nfs/pagelist.c
+@@ -508,7 +508,7 @@ size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc,
+ * for it without upsetting the slab allocator.
+ */
+ if (((mirror->pg_count + req->wb_bytes) >> PAGE_SHIFT) *
+- sizeof(struct page) > PAGE_SIZE)
++ sizeof(struct page *) > PAGE_SIZE)
+ return 0;
+
+ return min(mirror->pg_bsize - mirror->pg_count, (size_t)req->wb_bytes);
+diff --git a/fs/nfs/read.c b/fs/nfs/read.c
+index ae0ff7a11b40..01b8cc8e8cfc 100644
+--- a/fs/nfs/read.c
++++ b/fs/nfs/read.c
+@@ -72,6 +72,9 @@ void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio)
+ {
+ struct nfs_pgio_mirror *mirror;
+
++ if (pgio->pg_ops && pgio->pg_ops->pg_cleanup)
++ pgio->pg_ops->pg_cleanup(pgio);
++
+ pgio->pg_ops = &nfs_pgio_rw_ops;
+
+ /* read path should never have more than one mirror */
+diff --git a/fs/nfs/write.c b/fs/nfs/write.c
+index 07115b9b1ad2..d9851a6a2813 100644
+--- a/fs/nfs/write.c
++++ b/fs/nfs/write.c
+@@ -1203,7 +1203,7 @@ static int nfs_can_extend_write(struct file *file, struct page *page, struct ino
+ return 1;
+ if (!flctx || (list_empty_careful(&flctx->flc_flock) &&
+ list_empty_careful(&flctx->flc_posix)))
+- return 0;
++ return 1;
+
+ /* Check to see if there are whole file write locks */
+ ret = 0;
+@@ -1331,6 +1331,9 @@ void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio)
+ {
+ struct nfs_pgio_mirror *mirror;
+
++ if (pgio->pg_ops && pgio->pg_ops->pg_cleanup)
++ pgio->pg_ops->pg_cleanup(pgio);
++
+ pgio->pg_ops = &nfs_pgio_rw_ops;
+
+ nfs_pageio_stop_mirroring(pgio);
+diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
+index fdf4b41d0609..482cfd34472d 100644
+--- a/fs/ocfs2/dlm/dlmmaster.c
++++ b/fs/ocfs2/dlm/dlmmaster.c
+@@ -1439,6 +1439,7 @@ int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data,
+ int found, ret;
+ int set_maybe;
+ int dispatch_assert = 0;
++ int dispatched = 0;
+
+ if (!dlm_grab(dlm))
+ return DLM_MASTER_RESP_NO;
+@@ -1658,15 +1659,18 @@ send_response:
+ mlog(ML_ERROR, "failed to dispatch assert master work\n");
+ response = DLM_MASTER_RESP_ERROR;
+ dlm_lockres_put(res);
+- } else
++ } else {
++ dispatched = 1;
+ __dlm_lockres_grab_inflight_worker(dlm, res);
++ }
+ spin_unlock(&res->spinlock);
+ } else {
+ if (res)
+ dlm_lockres_put(res);
+ }
+
+- dlm_put(dlm);
++ if (!dispatched)
++ dlm_put(dlm);
+ return response;
+ }
+
+@@ -2090,7 +2094,6 @@ int dlm_dispatch_assert_master(struct dlm_ctxt *dlm,
+
+
+ /* queue up work for dlm_assert_master_worker */
+- dlm_grab(dlm); /* get an extra ref for the work item */
+ dlm_init_work_item(dlm, item, dlm_assert_master_worker, NULL);
+ item->u.am.lockres = res; /* already have a ref */
+ /* can optionally ignore node numbers higher than this node */
+diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
+index ce12e0b1a31f..3d90ad7ff91f 100644
+--- a/fs/ocfs2/dlm/dlmrecovery.c
++++ b/fs/ocfs2/dlm/dlmrecovery.c
+@@ -1694,6 +1694,7 @@ int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
+ unsigned int hash;
+ int master = DLM_LOCK_RES_OWNER_UNKNOWN;
+ u32 flags = DLM_ASSERT_MASTER_REQUERY;
++ int dispatched = 0;
+
+ if (!dlm_grab(dlm)) {
+ /* since the domain has gone away on this
+@@ -1719,8 +1720,10 @@ int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
+ dlm_put(dlm);
+ /* sender will take care of this and retry */
+ return ret;
+- } else
++ } else {
++ dispatched = 1;
+ __dlm_lockres_grab_inflight_worker(dlm, res);
++ }
+ spin_unlock(&res->spinlock);
+ } else {
+ /* put.. incase we are not the master */
+@@ -1730,7 +1733,8 @@ int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
+ }
+ spin_unlock(&dlm->spinlock);
+
+- dlm_put(dlm);
++ if (!dispatched)
++ dlm_put(dlm);
+ return master;
+ }
+
+diff --git a/fs/open.c b/fs/open.c
+index 98e5a52dc68c..f9d2bf935099 100644
+--- a/fs/open.c
++++ b/fs/open.c
+@@ -678,18 +678,18 @@ int open_check_o_direct(struct file *f)
+ }
+
+ static int do_dentry_open(struct file *f,
++ struct inode *inode,
+ int (*open)(struct inode *, struct file *),
+ const struct cred *cred)
+ {
+ static const struct file_operations empty_fops = {};
+- struct inode *inode;
+ int error;
+
+ f->f_mode = OPEN_FMODE(f->f_flags) | FMODE_LSEEK |
+ FMODE_PREAD | FMODE_PWRITE;
+
+ path_get(&f->f_path);
+- inode = f->f_inode = f->f_path.dentry->d_inode;
++ f->f_inode = inode;
+ f->f_mapping = inode->i_mapping;
+
+ if (unlikely(f->f_flags & O_PATH)) {
+@@ -793,7 +793,8 @@ int finish_open(struct file *file, struct dentry *dentry,
+ BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
+
+ file->f_path.dentry = dentry;
+- error = do_dentry_open(file, open, current_cred());
++ error = do_dentry_open(file, d_backing_inode(dentry), open,
++ current_cred());
+ if (!error)
+ *opened |= FILE_OPENED;
+
+@@ -822,6 +823,28 @@ int finish_no_open(struct file *file, struct dentry *dentry)
+ }
+ EXPORT_SYMBOL(finish_no_open);
+
++/**
++ * vfs_open - open the file at the given path
++ * @path: path to open
++ * @file: newly allocated file with f_flag initialized
++ * @cred: credentials to use
++ */
++int vfs_open(const struct path *path, struct file *file,
++ const struct cred *cred)
++{
++ struct dentry *dentry = path->dentry;
++ struct inode *inode = dentry->d_inode;
++
++ file->f_path = *path;
++ if (dentry->d_flags & DCACHE_OP_SELECT_INODE) {
++ inode = dentry->d_op->d_select_inode(dentry, file->f_flags);
++ if (IS_ERR(inode))
++ return PTR_ERR(inode);
++ }
++
++ return do_dentry_open(file, inode, NULL, cred);
++}
++
+ struct file *dentry_open(const struct path *path, int flags,
+ const struct cred *cred)
+ {
+@@ -853,26 +876,6 @@ struct file *dentry_open(const struct path *path, int flags,
+ }
+ EXPORT_SYMBOL(dentry_open);
+
+-/**
+- * vfs_open - open the file at the given path
+- * @path: path to open
+- * @filp: newly allocated file with f_flag initialized
+- * @cred: credentials to use
+- */
+-int vfs_open(const struct path *path, struct file *filp,
+- const struct cred *cred)
+-{
+- struct inode *inode = path->dentry->d_inode;
+-
+- if (inode->i_op->dentry_open)
+- return inode->i_op->dentry_open(path->dentry, filp, cred);
+- else {
+- filp->f_path = *path;
+- return do_dentry_open(filp, NULL, cred);
+- }
+-}
+-EXPORT_SYMBOL(vfs_open);
+-
+ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *op)
+ {
+ int lookup_flags = 0;
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index 04f124884687..ba0db2638946 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -336,37 +336,33 @@ static bool ovl_open_need_copy_up(int flags, enum ovl_path_type type,
+ return true;
+ }
+
+-static int ovl_dentry_open(struct dentry *dentry, struct file *file,
+- const struct cred *cred)
++struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags)
+ {
+ int err;
+ struct path realpath;
+ enum ovl_path_type type;
+- bool want_write = false;
++
++ if (d_is_dir(dentry))
++ return d_backing_inode(dentry);
+
+ type = ovl_path_real(dentry, &realpath);
+- if (ovl_open_need_copy_up(file->f_flags, type, realpath.dentry)) {
+- want_write = true;
++ if (ovl_open_need_copy_up(file_flags, type, realpath.dentry)) {
+ err = ovl_want_write(dentry);
+ if (err)
+- goto out;
++ return ERR_PTR(err);
+
+- if (file->f_flags & O_TRUNC)
++ if (file_flags & O_TRUNC)
+ err = ovl_copy_up_last(dentry, NULL, true);
+ else
+ err = ovl_copy_up(dentry);
++ ovl_drop_write(dentry);
+ if (err)
+- goto out_drop_write;
++ return ERR_PTR(err);
+
+ ovl_path_upper(dentry, &realpath);
+ }
+
+- err = vfs_open(&realpath, file, cred);
+-out_drop_write:
+- if (want_write)
+- ovl_drop_write(dentry);
+-out:
+- return err;
++ return d_backing_inode(realpath.dentry);
+ }
+
+ static const struct inode_operations ovl_file_inode_operations = {
+@@ -377,7 +373,6 @@ static const struct inode_operations ovl_file_inode_operations = {
+ .getxattr = ovl_getxattr,
+ .listxattr = ovl_listxattr,
+ .removexattr = ovl_removexattr,
+- .dentry_open = ovl_dentry_open,
+ };
+
+ static const struct inode_operations ovl_symlink_inode_operations = {
+diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
+index 17ac5afc9ffb..ea5a40b06e3a 100644
+--- a/fs/overlayfs/overlayfs.h
++++ b/fs/overlayfs/overlayfs.h
+@@ -173,6 +173,7 @@ ssize_t ovl_getxattr(struct dentry *dentry, const char *name,
+ void *value, size_t size);
+ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size);
+ int ovl_removexattr(struct dentry *dentry, const char *name);
++struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags);
+
+ struct inode *ovl_new_inode(struct super_block *sb, umode_t mode,
+ struct ovl_entry *oe);
+diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
+index 155989455a72..33f2d27a6792 100644
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -275,6 +275,7 @@ static void ovl_dentry_release(struct dentry *dentry)
+
+ static const struct dentry_operations ovl_dentry_operations = {
+ .d_release = ovl_dentry_release,
++ .d_select_inode = ovl_d_select_inode,
+ };
+
+ static struct ovl_entry *ovl_alloc_entry(unsigned int numlower)
+diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
+index 96f3448b6eb4..fd65b3f1923c 100644
+--- a/fs/ubifs/xattr.c
++++ b/fs/ubifs/xattr.c
+@@ -652,11 +652,8 @@ int ubifs_init_security(struct inode *dentry, struct inode *inode,
+ {
+ int err;
+
+- mutex_lock(&inode->i_mutex);
+ err = security_inode_init_security(inode, dentry, qstr,
+ &init_xattrs, 0);
+- mutex_unlock(&inode->i_mutex);
+-
+ if (err) {
+ struct ubifs_info *c = dentry->i_sb->s_fs_info;
+ ubifs_err(c, "cannot initialize security for inode %lu, error %d",
+diff --git a/include/linux/dcache.h b/include/linux/dcache.h
+index df334cbacc6d..167ec0934049 100644
+--- a/include/linux/dcache.h
++++ b/include/linux/dcache.h
+@@ -160,6 +160,7 @@ struct dentry_operations {
+ char *(*d_dname)(struct dentry *, char *, int);
+ struct vfsmount *(*d_automount)(struct path *);
+ int (*d_manage)(struct dentry *, bool);
++ struct inode *(*d_select_inode)(struct dentry *, unsigned);
+ } ____cacheline_aligned;
+
+ /*
+@@ -225,6 +226,7 @@ struct dentry_operations {
+
+ #define DCACHE_MAY_FREE 0x00800000
+ #define DCACHE_FALLTHRU 0x01000000 /* Fall through to lower layer */
++#define DCACHE_OP_SELECT_INODE 0x02000000 /* Unioned entry: dcache op selects inode */
+
+ extern seqlock_t rename_lock;
+
+diff --git a/include/linux/fs.h b/include/linux/fs.h
+index 571aab91bfc0..f93192333b37 100644
+--- a/include/linux/fs.h
++++ b/include/linux/fs.h
+@@ -1641,7 +1641,6 @@ struct inode_operations {
+ int (*set_acl)(struct inode *, struct posix_acl *, int);
+
+ /* WARNING: probably going away soon, do not use! */
+- int (*dentry_open)(struct dentry *, struct file *, const struct cred *);
+ } ____cacheline_aligned;
+
+ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
+@@ -2193,7 +2192,6 @@ extern struct file *file_open_name(struct filename *, int, umode_t);
+ extern struct file *filp_open(const char *, int, umode_t);
+ extern struct file *file_open_root(struct dentry *, struct vfsmount *,
+ const char *, int);
+-extern int vfs_open(const struct path *, struct file *, const struct cred *);
+ extern struct file * dentry_open(const struct path *, int, const struct cred *);
+ extern int filp_close(struct file *, fl_owner_t id);
+
+diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
+index de722d4e9d61..258daf914c6d 100644
+--- a/include/linux/mmc/core.h
++++ b/include/linux/mmc/core.h
+@@ -121,6 +121,7 @@ struct mmc_data {
+ struct mmc_request *mrq; /* associated request */
+
+ unsigned int sg_len; /* size of scatter list */
++ int sg_count; /* mapped sg entries */
+ struct scatterlist *sg; /* I/O scatter list */
+ s32 host_cookie; /* host private data */
+ };
+diff --git a/include/linux/security.h b/include/linux/security.h
+index 18264ea9e314..5d45b4fd91d2 100644
+--- a/include/linux/security.h
++++ b/include/linux/security.h
+@@ -2527,7 +2527,7 @@ static inline int security_task_prctl(int option, unsigned long arg2,
+ unsigned long arg4,
+ unsigned long arg5)
+ {
+- return cap_task_prctl(option, arg2, arg3, arg3, arg5);
++ return cap_task_prctl(option, arg2, arg3, arg4, arg5);
+ }
+
+ static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
+diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h
+index d81d584157e1..e8635854a55b 100644
+--- a/include/net/netfilter/nf_queue.h
++++ b/include/net/netfilter/nf_queue.h
+@@ -24,6 +24,8 @@ struct nf_queue_entry {
+ struct nf_queue_handler {
+ int (*outfn)(struct nf_queue_entry *entry,
+ unsigned int queuenum);
++ void (*nf_hook_drop)(struct net *net,
++ struct nf_hook_ops *ops);
+ };
+
+ void nf_register_queue_handler(const struct nf_queue_handler *qh);
+diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
+index e6bcf55dcf20..fd0ca42b1d63 100644
+--- a/include/net/netfilter/nf_tables.h
++++ b/include/net/netfilter/nf_tables.h
+@@ -125,7 +125,7 @@ static inline enum nft_data_types nft_dreg_to_type(enum nft_registers reg)
+
+ static inline enum nft_registers nft_type_to_reg(enum nft_data_types type)
+ {
+- return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1;
++ return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE;
+ }
+
+ unsigned int nft_parse_register(const struct nlattr *attr);
+diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h
+index 73abbc54063d..7bd03f867fca 100644
+--- a/include/target/iscsi/iscsi_target_core.h
++++ b/include/target/iscsi/iscsi_target_core.h
+@@ -787,7 +787,6 @@ struct iscsi_np {
+ enum iscsi_timer_flags_table np_login_timer_flags;
+ u32 np_exports;
+ enum np_flags_table np_flags;
+- unsigned char np_ip[IPV6_ADDRESS_SPACE];
+ u16 np_port;
+ spinlock_t np_thread_lock;
+ struct completion np_restart_comp;
+diff --git a/include/xen/interface/sched.h b/include/xen/interface/sched.h
+index 9ce083960a25..f18490985fc8 100644
+--- a/include/xen/interface/sched.h
++++ b/include/xen/interface/sched.h
+@@ -107,5 +107,13 @@ struct sched_watchdog {
+ #define SHUTDOWN_suspend 2 /* Clean up, save suspend info, kill. */
+ #define SHUTDOWN_crash 3 /* Tell controller we've crashed. */
+ #define SHUTDOWN_watchdog 4 /* Restart because watchdog time expired. */
++/*
++ * Domain asked to perform 'soft reset' for it. The expected behavior is to
++ * reset internal Xen state for the domain returning it to the point where it
++ * was created but leaving the domain's memory contents and vCPU contexts
++ * intact. This will allow the domain to start over and set up all Xen specific
++ * interfaces again.
++ */
++#define SHUTDOWN_soft_reset 5
+
+ #endif /* __XEN_PUBLIC_SCHED_H__ */
+diff --git a/ipc/msg.c b/ipc/msg.c
+index 2b6fdbb9e0e9..652540613d26 100644
+--- a/ipc/msg.c
++++ b/ipc/msg.c
+@@ -137,13 +137,6 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
+ return retval;
+ }
+
+- /* ipc_addid() locks msq upon success. */
+- id = ipc_addid(&msg_ids(ns), &msq->q_perm, ns->msg_ctlmni);
+- if (id < 0) {
+- ipc_rcu_putref(msq, msg_rcu_free);
+- return id;
+- }
+-
+ msq->q_stime = msq->q_rtime = 0;
+ msq->q_ctime = get_seconds();
+ msq->q_cbytes = msq->q_qnum = 0;
+@@ -153,6 +146,13 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
+ INIT_LIST_HEAD(&msq->q_receivers);
+ INIT_LIST_HEAD(&msq->q_senders);
+
++ /* ipc_addid() locks msq upon success. */
++ id = ipc_addid(&msg_ids(ns), &msq->q_perm, ns->msg_ctlmni);
++ if (id < 0) {
++ ipc_rcu_putref(msq, msg_rcu_free);
++ return id;
++ }
++
+ ipc_unlock_object(&msq->q_perm);
+ rcu_read_unlock();
+
+diff --git a/ipc/shm.c b/ipc/shm.c
+index 6d767071c367..499a8bd22fad 100644
+--- a/ipc/shm.c
++++ b/ipc/shm.c
+@@ -550,12 +550,6 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
+ if (IS_ERR(file))
+ goto no_file;
+
+- id = ipc_addid(&shm_ids(ns), &shp->shm_perm, ns->shm_ctlmni);
+- if (id < 0) {
+- error = id;
+- goto no_id;
+- }
+-
+ shp->shm_cprid = task_tgid_vnr(current);
+ shp->shm_lprid = 0;
+ shp->shm_atim = shp->shm_dtim = 0;
+@@ -564,6 +558,13 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
+ shp->shm_nattch = 0;
+ shp->shm_file = file;
+ shp->shm_creator = current;
++
++ id = ipc_addid(&shm_ids(ns), &shp->shm_perm, ns->shm_ctlmni);
++ if (id < 0) {
++ error = id;
++ goto no_id;
++ }
++
+ list_add(&shp->shm_clist, ¤t->sysvshm.shm_clist);
+
+ /*
+diff --git a/ipc/util.c b/ipc/util.c
+index ff3323ef8d8b..c917e9fd10b1 100644
+--- a/ipc/util.c
++++ b/ipc/util.c
+@@ -237,6 +237,10 @@ int ipc_addid(struct ipc_ids *ids, struct kern_ipc_perm *new, int size)
+ rcu_read_lock();
+ spin_lock(&new->lock);
+
++ current_euid_egid(&euid, &egid);
++ new->cuid = new->uid = euid;
++ new->gid = new->cgid = egid;
++
+ id = idr_alloc(&ids->ipcs_idr, new,
+ (next_id < 0) ? 0 : ipcid_to_idx(next_id), 0,
+ GFP_NOWAIT);
+@@ -249,10 +253,6 @@ int ipc_addid(struct ipc_ids *ids, struct kern_ipc_perm *new, int size)
+
+ ids->in_use++;
+
+- current_euid_egid(&euid, &egid);
+- new->cuid = new->uid = euid;
+- new->gid = new->cgid = egid;
+-
+ if (next_id < 0) {
+ new->seq = ids->seq++;
+ if (ids->seq > IPCID_SEQ_MAX)
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 94817491407b..e1af58e23bee 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -4411,14 +4411,6 @@ static void ring_buffer_wakeup(struct perf_event *event)
+ rcu_read_unlock();
+ }
+
+-static void rb_free_rcu(struct rcu_head *rcu_head)
+-{
+- struct ring_buffer *rb;
+-
+- rb = container_of(rcu_head, struct ring_buffer, rcu_head);
+- rb_free(rb);
+-}
+-
+ struct ring_buffer *ring_buffer_get(struct perf_event *event)
+ {
+ struct ring_buffer *rb;
+diff --git a/kernel/events/internal.h b/kernel/events/internal.h
+index 9f6ce9ba4a04..a6adc36a3732 100644
+--- a/kernel/events/internal.h
++++ b/kernel/events/internal.h
+@@ -11,6 +11,7 @@
+ struct ring_buffer {
+ atomic_t refcount;
+ struct rcu_head rcu_head;
++ struct irq_work irq_work;
+ #ifdef CONFIG_PERF_USE_VMALLOC
+ struct work_struct work;
+ int page_order; /* allocation order */
+@@ -55,6 +56,15 @@ struct ring_buffer {
+ };
+
+ extern void rb_free(struct ring_buffer *rb);
++
++static inline void rb_free_rcu(struct rcu_head *rcu_head)
++{
++ struct ring_buffer *rb;
++
++ rb = container_of(rcu_head, struct ring_buffer, rcu_head);
++ rb_free(rb);
++}
++
+ extern struct ring_buffer *
+ rb_alloc(int nr_pages, long watermark, int cpu, int flags);
+ extern void perf_event_wakeup(struct perf_event *event);
+diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
+index a7604c81168e..7f63ad978cb8 100644
+--- a/kernel/events/ring_buffer.c
++++ b/kernel/events/ring_buffer.c
+@@ -221,6 +221,8 @@ void perf_output_end(struct perf_output_handle *handle)
+ rcu_read_unlock();
+ }
+
++static void rb_irq_work(struct irq_work *work);
++
+ static void
+ ring_buffer_init(struct ring_buffer *rb, long watermark, int flags)
+ {
+@@ -241,6 +243,16 @@ ring_buffer_init(struct ring_buffer *rb, long watermark, int flags)
+
+ INIT_LIST_HEAD(&rb->event_list);
+ spin_lock_init(&rb->event_lock);
++ init_irq_work(&rb->irq_work, rb_irq_work);
++}
++
++static void ring_buffer_put_async(struct ring_buffer *rb)
++{
++ if (!atomic_dec_and_test(&rb->refcount))
++ return;
++
++ rb->rcu_head.next = (void *)rb;
++ irq_work_queue(&rb->irq_work);
+ }
+
+ /*
+@@ -319,7 +331,7 @@ err_put:
+ rb_free_aux(rb);
+
+ err:
+- ring_buffer_put(rb);
++ ring_buffer_put_async(rb);
+ handle->event = NULL;
+
+ return NULL;
+@@ -370,7 +382,7 @@ void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size,
+
+ local_set(&rb->aux_nest, 0);
+ rb_free_aux(rb);
+- ring_buffer_put(rb);
++ ring_buffer_put_async(rb);
+ }
+
+ /*
+@@ -559,7 +571,18 @@ static void __rb_free_aux(struct ring_buffer *rb)
+ void rb_free_aux(struct ring_buffer *rb)
+ {
+ if (atomic_dec_and_test(&rb->aux_refcount))
++ irq_work_queue(&rb->irq_work);
++}
++
++static void rb_irq_work(struct irq_work *work)
++{
++ struct ring_buffer *rb = container_of(work, struct ring_buffer, irq_work);
++
++ if (!atomic_read(&rb->aux_refcount))
+ __rb_free_aux(rb);
++
++ if (rb->rcu_head.next == (void *)rb)
++ call_rcu(&rb->rcu_head, rb_free_rcu);
+ }
+
+ #ifndef CONFIG_PERF_USE_VMALLOC
+diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
+index df2f4642d1e7..5c38f59741e2 100644
+--- a/kernel/irq/proc.c
++++ b/kernel/irq/proc.c
+@@ -12,6 +12,7 @@
+ #include <linux/seq_file.h>
+ #include <linux/interrupt.h>
+ #include <linux/kernel_stat.h>
++#include <linux/mutex.h>
+
+ #include "internals.h"
+
+@@ -323,18 +324,29 @@ void register_handler_proc(unsigned int irq, struct irqaction *action)
+
+ void register_irq_proc(unsigned int irq, struct irq_desc *desc)
+ {
++ static DEFINE_MUTEX(register_lock);
+ char name [MAX_NAMELEN];
+
+- if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir)
++ if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip))
+ return;
+
++ /*
++ * irq directories are registered only when a handler is
++ * added, not when the descriptor is created, so multiple
++ * tasks might try to register at the same time.
++ */
++ mutex_lock(®ister_lock);
++
++ if (desc->dir)
++ goto out_unlock;
++
+ memset(name, 0, MAX_NAMELEN);
+ sprintf(name, "%d", irq);
+
+ /* create /proc/irq/1234 */
+ desc->dir = proc_mkdir(name, root_irq_dir);
+ if (!desc->dir)
+- return;
++ goto out_unlock;
+
+ #ifdef CONFIG_SMP
+ /* create /proc/irq/<irq>/smp_affinity */
+@@ -355,6 +367,9 @@ void register_irq_proc(unsigned int irq, struct irq_desc *desc)
+
+ proc_create_data("spurious", 0444, desc->dir,
+ &irq_spurious_proc_fops, (void *)(long)irq);
++
++out_unlock:
++ mutex_unlock(®ister_lock);
+ }
+
+ void unregister_irq_proc(unsigned int irq, struct irq_desc *desc)
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index e6910526c84b..8476206a1e19 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -2217,11 +2217,11 @@ static struct rq *finish_task_switch(struct task_struct *prev)
+ * If a task dies, then it sets TASK_DEAD in tsk->state and calls
+ * schedule one last time. The schedule call will never return, and
+ * the scheduled task must drop that reference.
+- * The test for TASK_DEAD must occur while the runqueue locks are
+- * still held, otherwise prev could be scheduled on another cpu, die
+- * there before we look at prev->state, and then the reference would
+- * be dropped twice.
+- * Manfred Spraul <manfred@colorfullife.com>
++ *
++ * We must observe prev->state before clearing prev->on_cpu (in
++ * finish_lock_switch), otherwise a concurrent wakeup can get prev
++ * running on another CPU and we could rave with its RUNNING -> DEAD
++ * transition, resulting in a double drop.
+ */
+ prev_state = prev->state;
+ vtime_task_switch(prev);
+@@ -2358,13 +2358,20 @@ unsigned long nr_running(void)
+
+ /*
+ * Check if only the current task is running on the cpu.
++ *
++ * Caution: this function does not check that the caller has disabled
++ * preemption, thus the result might have a time-of-check-to-time-of-use
++ * race. The caller is responsible to use it correctly, for example:
++ *
++ * - from a non-preemptable section (of course)
++ *
++ * - from a thread that is bound to a single CPU
++ *
++ * - in a loop with very short iterations (e.g. a polling loop)
+ */
+ bool single_task_running(void)
+ {
+- if (cpu_rq(smp_processor_id())->nr_running == 1)
+- return true;
+- else
+- return false;
++ return raw_rq()->nr_running == 1;
+ }
+ EXPORT_SYMBOL(single_task_running);
+
+diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
+index c2980e8733bc..77690b653ca9 100644
+--- a/kernel/sched/fair.c
++++ b/kernel/sched/fair.c
+@@ -5126,18 +5126,21 @@ again:
+ * entity, update_curr() will update its vruntime, otherwise
+ * forget we've ever seen it.
+ */
+- if (curr && curr->on_rq)
+- update_curr(cfs_rq);
+- else
+- curr = NULL;
++ if (curr) {
++ if (curr->on_rq)
++ update_curr(cfs_rq);
++ else
++ curr = NULL;
+
+- /*
+- * This call to check_cfs_rq_runtime() will do the throttle and
+- * dequeue its entity in the parent(s). Therefore the 'simple'
+- * nr_running test will indeed be correct.
+- */
+- if (unlikely(check_cfs_rq_runtime(cfs_rq)))
+- goto simple;
++ /*
++ * This call to check_cfs_rq_runtime() will do the
++ * throttle and dequeue its entity in the parent(s).
++ * Therefore the 'simple' nr_running test will indeed
++ * be correct.
++ */
++ if (unlikely(check_cfs_rq_runtime(cfs_rq)))
++ goto simple;
++ }
+
+ se = pick_next_entity(cfs_rq, curr);
+ cfs_rq = group_cfs_rq(se);
+diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
+index e0e129993958..aa1f059de4f7 100644
+--- a/kernel/sched/sched.h
++++ b/kernel/sched/sched.h
+@@ -1068,9 +1068,10 @@ static inline void finish_lock_switch(struct rq *rq, struct task_struct *prev)
+ * After ->on_cpu is cleared, the task can be moved to a different CPU.
+ * We must ensure this doesn't happen until the switch is completely
+ * finished.
++ *
++ * Pairs with the control dependency and rmb in try_to_wake_up().
+ */
+- smp_wmb();
+- prev->on_cpu = 0;
++ smp_store_release(&prev->on_cpu, 0);
+ #endif
+ #ifdef CONFIG_DEBUG_SPINLOCK
+ /* this is a valid case when another task releases the spinlock */
+diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
+index 946acb72179f..414d9df94724 100644
+--- a/kernel/time/timekeeping.c
++++ b/kernel/time/timekeeping.c
+@@ -1615,7 +1615,7 @@ static __always_inline void timekeeping_freqadjust(struct timekeeper *tk,
+ negative = (tick_error < 0);
+
+ /* Sort out the magnitude of the correction */
+- tick_error = abs(tick_error);
++ tick_error = abs64(tick_error);
+ for (adj = 0; tick_error > interval; adj++)
+ tick_error >>= 1;
+
+diff --git a/lib/iommu-common.c b/lib/iommu-common.c
+index df30632f0bef..4fdeee02e0a9 100644
+--- a/lib/iommu-common.c
++++ b/lib/iommu-common.c
+@@ -21,8 +21,7 @@ static DEFINE_PER_CPU(unsigned int, iommu_hash_common);
+
+ static inline bool need_flush(struct iommu_map_table *iommu)
+ {
+- return (iommu->lazy_flush != NULL &&
+- (iommu->flags & IOMMU_NEED_FLUSH) != 0);
++ return ((iommu->flags & IOMMU_NEED_FLUSH) != 0);
+ }
+
+ static inline void set_flush(struct iommu_map_table *iommu)
+@@ -211,7 +210,8 @@ unsigned long iommu_tbl_range_alloc(struct device *dev,
+ goto bail;
+ }
+ }
+- if (n < pool->hint || need_flush(iommu)) {
++ if (iommu->lazy_flush &&
++ (n < pool->hint || need_flush(iommu))) {
+ clear_flush(iommu);
+ iommu->lazy_flush(iommu);
+ }
+diff --git a/mm/hugetlb.c b/mm/hugetlb.c
+index 8c4c1f9f9a9a..a6ff935476e3 100644
+--- a/mm/hugetlb.c
++++ b/mm/hugetlb.c
+@@ -2897,6 +2897,14 @@ static void unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma,
+ continue;
+
+ /*
++ * Shared VMAs have their own reserves and do not affect
++ * MAP_PRIVATE accounting but it is possible that a shared
++ * VMA is using the same page so check and skip such VMAs.
++ */
++ if (iter_vma->vm_flags & VM_MAYSHARE)
++ continue;
++
++ /*
+ * Unmap the page from other VMAs without their own reserves.
+ * They get marked to be SIGKILLed if they fault in these
+ * areas. This is because a future no-page fault on this VMA
+diff --git a/mm/migrate.c b/mm/migrate.c
+index f53838fe3dfe..2c37b1a44a8c 100644
+--- a/mm/migrate.c
++++ b/mm/migrate.c
+@@ -1062,7 +1062,7 @@ out:
+ if (rc != MIGRATEPAGE_SUCCESS && put_new_page)
+ put_new_page(new_hpage, private);
+ else
+- put_page(new_hpage);
++ putback_active_hugepage(new_hpage);
+
+ if (result) {
+ if (rc)
+diff --git a/mm/slab.c b/mm/slab.c
+index 3dd2d1ff9d5d..330039fdcf18 100644
+--- a/mm/slab.c
++++ b/mm/slab.c
+@@ -2189,9 +2189,16 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags)
+ size += BYTES_PER_WORD;
+ }
+ #if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC)
+- if (size >= kmalloc_size(INDEX_NODE + 1)
+- && cachep->object_size > cache_line_size()
+- && ALIGN(size, cachep->align) < PAGE_SIZE) {
++ /*
++ * To activate debug pagealloc, off-slab management is necessary
++ * requirement. In early phase of initialization, small sized slab
++ * doesn't get initialized so it would not be possible. So, we need
++ * to check size >= 256. It guarantees that all necessary small
++ * sized slab is initialized in current slab initialization sequence.
++ */
++ if (!slab_early_init && size >= kmalloc_size(INDEX_NODE) &&
++ size >= 256 && cachep->object_size > cache_line_size() &&
++ ALIGN(size, cachep->align) < PAGE_SIZE) {
+ cachep->obj_offset += PAGE_SIZE - ALIGN(size, cachep->align);
+ size = PAGE_SIZE;
+ }
+diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
+index aad022dd15df..95b3167cf036 100644
+--- a/net/batman-adv/distributed-arp-table.c
++++ b/net/batman-adv/distributed-arp-table.c
+@@ -15,6 +15,7 @@
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
++#include <linux/bitops.h>
+ #include <linux/if_ether.h>
+ #include <linux/if_arp.h>
+ #include <linux/if_vlan.h>
+@@ -422,7 +423,7 @@ static bool batadv_is_orig_node_eligible(struct batadv_dat_candidate *res,
+ int j;
+
+ /* check if orig node candidate is running DAT */
+- if (!(candidate->capabilities & BATADV_ORIG_CAPA_HAS_DAT))
++ if (!test_bit(BATADV_ORIG_CAPA_HAS_DAT, &candidate->capabilities))
+ goto out;
+
+ /* Check if this node has already been selected... */
+@@ -682,9 +683,9 @@ static void batadv_dat_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
+ uint16_t tvlv_value_len)
+ {
+ if (flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND)
+- orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_DAT;
++ clear_bit(BATADV_ORIG_CAPA_HAS_DAT, &orig->capabilities);
+ else
+- orig->capabilities |= BATADV_ORIG_CAPA_HAS_DAT;
++ set_bit(BATADV_ORIG_CAPA_HAS_DAT, &orig->capabilities);
+ }
+
+ /**
+diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
+index b24e4bb64fb5..8653c1a506f4 100644
+--- a/net/batman-adv/multicast.c
++++ b/net/batman-adv/multicast.c
+@@ -15,6 +15,8 @@
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
++#include <linux/bitops.h>
++#include <linux/bug.h>
+ #include "main.h"
+ #include "multicast.h"
+ #include "originator.h"
+@@ -565,19 +567,26 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ *
+ * If the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag of this originator,
+ * orig, has toggled then this method updates counter and list accordingly.
++ *
++ * Caller needs to hold orig->mcast_handler_lock.
+ */
+ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+ {
++ struct hlist_node *node = &orig->mcast_want_all_unsnoopables_node;
++ struct hlist_head *head = &bat_priv->mcast.want_all_unsnoopables_list;
++
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_unsnoopables);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+- hlist_add_head_rcu(&orig->mcast_want_all_unsnoopables_node,
+- &bat_priv->mcast.want_all_unsnoopables_list);
++ /* flag checks above + mcast_handler_lock prevents this */
++ WARN_ON(!hlist_unhashed(node));
++
++ hlist_add_head_rcu(node, head);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) &&
+@@ -585,7 +594,10 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
+ atomic_dec(&bat_priv->mcast.num_want_all_unsnoopables);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+- hlist_del_rcu(&orig->mcast_want_all_unsnoopables_node);
++ /* flag checks above + mcast_handler_lock prevents this */
++ WARN_ON(hlist_unhashed(node));
++
++ hlist_del_init_rcu(node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+ }
+@@ -598,19 +610,26 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
+ *
+ * If the BATADV_MCAST_WANT_ALL_IPV4 flag of this originator, orig, has
+ * toggled then this method updates counter and list accordingly.
++ *
++ * Caller needs to hold orig->mcast_handler_lock.
+ */
+ static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+ {
++ struct hlist_node *node = &orig->mcast_want_all_ipv4_node;
++ struct hlist_head *head = &bat_priv->mcast.want_all_ipv4_list;
++
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_IPV4 &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV4)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_ipv4);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+- hlist_add_head_rcu(&orig->mcast_want_all_ipv4_node,
+- &bat_priv->mcast.want_all_ipv4_list);
++ /* flag checks above + mcast_handler_lock prevents this */
++ WARN_ON(!hlist_unhashed(node));
++
++ hlist_add_head_rcu(node, head);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_IPV4) &&
+@@ -618,7 +637,10 @@ static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv,
+ atomic_dec(&bat_priv->mcast.num_want_all_ipv4);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+- hlist_del_rcu(&orig->mcast_want_all_ipv4_node);
++ /* flag checks above + mcast_handler_lock prevents this */
++ WARN_ON(hlist_unhashed(node));
++
++ hlist_del_init_rcu(node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+ }
+@@ -631,19 +653,26 @@ static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv,
+ *
+ * If the BATADV_MCAST_WANT_ALL_IPV6 flag of this originator, orig, has
+ * toggled then this method updates counter and list accordingly.
++ *
++ * Caller needs to hold orig->mcast_handler_lock.
+ */
+ static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+ {
++ struct hlist_node *node = &orig->mcast_want_all_ipv6_node;
++ struct hlist_head *head = &bat_priv->mcast.want_all_ipv6_list;
++
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_IPV6 &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV6)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_ipv6);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+- hlist_add_head_rcu(&orig->mcast_want_all_ipv6_node,
+- &bat_priv->mcast.want_all_ipv6_list);
++ /* flag checks above + mcast_handler_lock prevents this */
++ WARN_ON(!hlist_unhashed(node));
++
++ hlist_add_head_rcu(node, head);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_IPV6) &&
+@@ -651,7 +680,10 @@ static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv,
+ atomic_dec(&bat_priv->mcast.num_want_all_ipv6);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+- hlist_del_rcu(&orig->mcast_want_all_ipv6_node);
++ /* flag checks above + mcast_handler_lock prevents this */
++ WARN_ON(hlist_unhashed(node));
++
++ hlist_del_init_rcu(node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+ }
+@@ -674,39 +706,42 @@ static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
+ uint8_t mcast_flags = BATADV_NO_FLAGS;
+ bool orig_initialized;
+
+- orig_initialized = orig->capa_initialized & BATADV_ORIG_CAPA_HAS_MCAST;
++ if (orig_mcast_enabled && tvlv_value &&
++ (tvlv_value_len >= sizeof(mcast_flags)))
++ mcast_flags = *(uint8_t *)tvlv_value;
++
++ spin_lock_bh(&orig->mcast_handler_lock);
++ orig_initialized = test_bit(BATADV_ORIG_CAPA_HAS_MCAST,
++ &orig->capa_initialized);
+
+ /* If mcast support is turned on decrease the disabled mcast node
+ * counter only if we had increased it for this node before. If this
+ * is a completely new orig_node no need to decrease the counter.
+ */
+ if (orig_mcast_enabled &&
+- !(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST)) {
++ !test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities)) {
+ if (orig_initialized)
+ atomic_dec(&bat_priv->mcast.num_disabled);
+- orig->capabilities |= BATADV_ORIG_CAPA_HAS_MCAST;
++ set_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities);
+ /* If mcast support is being switched off or if this is an initial
+ * OGM without mcast support then increase the disabled mcast
+ * node counter.
+ */
+ } else if (!orig_mcast_enabled &&
+- (orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST ||
++ (test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities) ||
+ !orig_initialized)) {
+ atomic_inc(&bat_priv->mcast.num_disabled);
+- orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_MCAST;
++ clear_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities);
+ }
+
+- orig->capa_initialized |= BATADV_ORIG_CAPA_HAS_MCAST;
+-
+- if (orig_mcast_enabled && tvlv_value &&
+- (tvlv_value_len >= sizeof(mcast_flags)))
+- mcast_flags = *(uint8_t *)tvlv_value;
++ set_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capa_initialized);
+
+ batadv_mcast_want_unsnoop_update(bat_priv, orig, mcast_flags);
+ batadv_mcast_want_ipv4_update(bat_priv, orig, mcast_flags);
+ batadv_mcast_want_ipv6_update(bat_priv, orig, mcast_flags);
+
+ orig->mcast_flags = mcast_flags;
++ spin_unlock_bh(&orig->mcast_handler_lock);
+ }
+
+ /**
+@@ -740,11 +775,15 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
+ {
+ struct batadv_priv *bat_priv = orig->bat_priv;
+
+- if (!(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST) &&
+- orig->capa_initialized & BATADV_ORIG_CAPA_HAS_MCAST)
++ spin_lock_bh(&orig->mcast_handler_lock);
++
++ if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities) &&
++ test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capa_initialized))
+ atomic_dec(&bat_priv->mcast.num_disabled);
+
+ batadv_mcast_want_unsnoop_update(bat_priv, orig, BATADV_NO_FLAGS);
+ batadv_mcast_want_ipv4_update(bat_priv, orig, BATADV_NO_FLAGS);
+ batadv_mcast_want_ipv6_update(bat_priv, orig, BATADV_NO_FLAGS);
++
++ spin_unlock_bh(&orig->mcast_handler_lock);
+ }
+diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
+index 127cc4d7380a..a449195c5b2b 100644
+--- a/net/batman-adv/network-coding.c
++++ b/net/batman-adv/network-coding.c
+@@ -15,6 +15,7 @@
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
++#include <linux/bitops.h>
+ #include <linux/debugfs.h>
+
+ #include "main.h"
+@@ -105,9 +106,9 @@ static void batadv_nc_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
+ uint16_t tvlv_value_len)
+ {
+ if (flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND)
+- orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_NC;
++ clear_bit(BATADV_ORIG_CAPA_HAS_NC, &orig->capabilities);
+ else
+- orig->capabilities |= BATADV_ORIG_CAPA_HAS_NC;
++ set_bit(BATADV_ORIG_CAPA_HAS_NC, &orig->capabilities);
+ }
+
+ /**
+@@ -871,7 +872,7 @@ void batadv_nc_update_nc_node(struct batadv_priv *bat_priv,
+ goto out;
+
+ /* check if orig node is network coding enabled */
+- if (!(orig_node->capabilities & BATADV_ORIG_CAPA_HAS_NC))
++ if (!test_bit(BATADV_ORIG_CAPA_HAS_NC, &orig_node->capabilities))
+ goto out;
+
+ /* accept ogms from 'good' neighbors and single hop neighbors */
+diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
+index 90e805aba379..dfae97408628 100644
+--- a/net/batman-adv/originator.c
++++ b/net/batman-adv/originator.c
+@@ -678,8 +678,13 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
+ orig_node->last_seen = jiffies;
+ reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS);
+ orig_node->bcast_seqno_reset = reset_time;
++
+ #ifdef CONFIG_BATMAN_ADV_MCAST
+ orig_node->mcast_flags = BATADV_NO_FLAGS;
++ INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node);
++ INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node);
++ INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node);
++ spin_lock_init(&orig_node->mcast_handler_lock);
+ #endif
+
+ /* create a vlan object for the "untagged" LAN */
+diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
+index 5ec31d7de24f..a0b1b861b968 100644
+--- a/net/batman-adv/soft-interface.c
++++ b/net/batman-adv/soft-interface.c
+@@ -172,6 +172,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
+ int gw_mode;
+ enum batadv_forw_mode forw_mode;
+ struct batadv_orig_node *mcast_single_orig = NULL;
++ int network_offset = ETH_HLEN;
+
+ if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
+ goto dropped;
+@@ -184,14 +185,18 @@ static int batadv_interface_tx(struct sk_buff *skb,
+ case ETH_P_8021Q:
+ vhdr = vlan_eth_hdr(skb);
+
+- if (vhdr->h_vlan_encapsulated_proto != ethertype)
++ if (vhdr->h_vlan_encapsulated_proto != ethertype) {
++ network_offset += VLAN_HLEN;
+ break;
++ }
+
+ /* fall through */
+ case ETH_P_BATMAN:
+ goto dropped;
+ }
+
++ skb_set_network_header(skb, network_offset);
++
+ if (batadv_bla_tx(bat_priv, skb, vid))
+ goto dropped;
+
+@@ -449,6 +454,9 @@ out:
+ */
+ void batadv_softif_vlan_free_ref(struct batadv_softif_vlan *vlan)
+ {
++ if (!vlan)
++ return;
++
+ if (atomic_dec_and_test(&vlan->refcount)) {
+ spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock);
+ hlist_del_rcu(&vlan->list);
+diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
+index 07b263a437d1..4f2a9d2c56db 100644
+--- a/net/batman-adv/translation-table.c
++++ b/net/batman-adv/translation-table.c
+@@ -15,6 +15,7 @@
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
++#include <linux/bitops.h>
+ #include "main.h"
+ #include "translation-table.h"
+ #include "soft-interface.h"
+@@ -575,6 +576,9 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
+
+ /* increase the refcounter of the related vlan */
+ vlan = batadv_softif_vlan_get(bat_priv, vid);
++ if (WARN(!vlan, "adding TT local entry %pM to non-existent VLAN %d",
++ addr, BATADV_PRINT_VID(vid)))
++ goto out;
+
+ batadv_dbg(BATADV_DBG_TT, bat_priv,
+ "Creating new local tt entry: %pM (vid: %d, ttvn: %d)\n",
+@@ -1015,6 +1019,7 @@ uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
+ struct batadv_tt_local_entry *tt_local_entry;
+ uint16_t flags, curr_flags = BATADV_NO_FLAGS;
+ struct batadv_softif_vlan *vlan;
++ void *tt_entry_exists;
+
+ tt_local_entry = batadv_tt_local_hash_find(bat_priv, addr, vid);
+ if (!tt_local_entry)
+@@ -1042,11 +1047,22 @@ uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
+ * immediately purge it
+ */
+ batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);
+- hlist_del_rcu(&tt_local_entry->common.hash_entry);
++
++ tt_entry_exists = batadv_hash_remove(bat_priv->tt.local_hash,
++ batadv_compare_tt,
++ batadv_choose_tt,
++ &tt_local_entry->common);
++ if (!tt_entry_exists)
++ goto out;
++
++ /* extra call to free the local tt entry */
+ batadv_tt_local_entry_free_ref(tt_local_entry);
+
+ /* decrease the reference held for this vlan */
+ vlan = batadv_softif_vlan_get(bat_priv, vid);
++ if (!vlan)
++ goto out;
++
+ batadv_softif_vlan_free_ref(vlan);
+ batadv_softif_vlan_free_ref(vlan);
+
+@@ -1147,8 +1163,10 @@ static void batadv_tt_local_table_free(struct batadv_priv *bat_priv)
+ /* decrease the reference held for this vlan */
+ vlan = batadv_softif_vlan_get(bat_priv,
+ tt_common_entry->vid);
+- batadv_softif_vlan_free_ref(vlan);
+- batadv_softif_vlan_free_ref(vlan);
++ if (vlan) {
++ batadv_softif_vlan_free_ref(vlan);
++ batadv_softif_vlan_free_ref(vlan);
++ }
+
+ batadv_tt_local_entry_free_ref(tt_local);
+ }
+@@ -1843,7 +1861,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
+ }
+ spin_unlock_bh(list_lock);
+ }
+- orig_node->capa_initialized &= ~BATADV_ORIG_CAPA_HAS_TT;
++ clear_bit(BATADV_ORIG_CAPA_HAS_TT, &orig_node->capa_initialized);
+ }
+
+ static bool batadv_tt_global_to_purge(struct batadv_tt_global_entry *tt_global,
+@@ -2802,7 +2820,7 @@ static void _batadv_tt_update_changes(struct batadv_priv *bat_priv,
+ return;
+ }
+ }
+- orig_node->capa_initialized |= BATADV_ORIG_CAPA_HAS_TT;
++ set_bit(BATADV_ORIG_CAPA_HAS_TT, &orig_node->capa_initialized);
+ }
+
+ static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv,
+@@ -3188,8 +3206,10 @@ static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv)
+
+ /* decrease the reference held for this vlan */
+ vlan = batadv_softif_vlan_get(bat_priv, tt_common->vid);
+- batadv_softif_vlan_free_ref(vlan);
+- batadv_softif_vlan_free_ref(vlan);
++ if (vlan) {
++ batadv_softif_vlan_free_ref(vlan);
++ batadv_softif_vlan_free_ref(vlan);
++ }
+
+ batadv_tt_local_entry_free_ref(tt_local);
+ }
+@@ -3302,7 +3322,8 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
+ bool has_tt_init;
+
+ tt_vlan = (struct batadv_tvlv_tt_vlan_data *)tt_buff;
+- has_tt_init = orig_node->capa_initialized & BATADV_ORIG_CAPA_HAS_TT;
++ has_tt_init = test_bit(BATADV_ORIG_CAPA_HAS_TT,
++ &orig_node->capa_initialized);
+
+ /* orig table not initialised AND first diff is in the OGM OR the ttvn
+ * increased by one -> we can apply the attached changes
+diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
+index 9398c3fb4174..26c37be2aa05 100644
+--- a/net/batman-adv/types.h
++++ b/net/batman-adv/types.h
+@@ -204,6 +204,7 @@ struct batadv_orig_bat_iv {
+ * @batadv_dat_addr_t: address of the orig node in the distributed hash
+ * @last_seen: time when last packet from this node was received
+ * @bcast_seqno_reset: time when the broadcast seqno window was reset
++ * @mcast_handler_lock: synchronizes mcast-capability and -flag changes
+ * @mcast_flags: multicast flags announced by the orig node
+ * @mcast_want_all_unsnoop_node: a list node for the
+ * mcast.want_all_unsnoopables list
+@@ -251,13 +252,15 @@ struct batadv_orig_node {
+ unsigned long last_seen;
+ unsigned long bcast_seqno_reset;
+ #ifdef CONFIG_BATMAN_ADV_MCAST
++ /* synchronizes mcast tvlv specific orig changes */
++ spinlock_t mcast_handler_lock;
+ uint8_t mcast_flags;
+ struct hlist_node mcast_want_all_unsnoopables_node;
+ struct hlist_node mcast_want_all_ipv4_node;
+ struct hlist_node mcast_want_all_ipv6_node;
+ #endif
+- uint8_t capabilities;
+- uint8_t capa_initialized;
++ unsigned long capabilities;
++ unsigned long capa_initialized;
+ atomic_t last_ttvn;
+ unsigned char *tt_buff;
+ int16_t tt_buff_len;
+@@ -296,10 +299,10 @@ struct batadv_orig_node {
+ * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
+ */
+ enum batadv_orig_capabilities {
+- BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
+- BATADV_ORIG_CAPA_HAS_NC = BIT(1),
+- BATADV_ORIG_CAPA_HAS_TT = BIT(2),
+- BATADV_ORIG_CAPA_HAS_MCAST = BIT(3),
++ BATADV_ORIG_CAPA_HAS_DAT,
++ BATADV_ORIG_CAPA_HAS_NC,
++ BATADV_ORIG_CAPA_HAS_TT,
++ BATADV_ORIG_CAPA_HAS_MCAST,
+ };
+
+ /**
+diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
+index 7b815bcc8c9b..69ad5091e2ce 100644
+--- a/net/bluetooth/smp.c
++++ b/net/bluetooth/smp.c
+@@ -2294,12 +2294,6 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
+ if (!conn)
+ return 1;
+
+- chan = conn->smp;
+- if (!chan) {
+- BT_ERR("SMP security requested but not available");
+- return 1;
+- }
+-
+ if (!hci_dev_test_flag(hcon->hdev, HCI_LE_ENABLED))
+ return 1;
+
+@@ -2313,6 +2307,12 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
+ if (smp_ltk_encrypt(conn, hcon->pending_sec_level))
+ return 0;
+
++ chan = conn->smp;
++ if (!chan) {
++ BT_ERR("SMP security requested but not available");
++ return 1;
++ }
++
+ l2cap_chan_lock(chan);
+
+ /* If SMP is already in progress ignore this request */
+diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
+index b27fc401c6a9..e664706b350c 100644
+--- a/net/ipv4/inet_connection_sock.c
++++ b/net/ipv4/inet_connection_sock.c
+@@ -584,7 +584,7 @@ static bool reqsk_queue_unlink(struct request_sock_queue *queue,
+ }
+
+ spin_unlock(&queue->syn_wait_lock);
+- if (del_timer_sync(&req->rsk_timer))
++ if (timer_pending(&req->rsk_timer) && del_timer_sync(&req->rsk_timer))
+ reqsk_put(req);
+ return found;
+ }
+diff --git a/net/netfilter/core.c b/net/netfilter/core.c
+index e6163017c42d..5d0c6fd59475 100644
+--- a/net/netfilter/core.c
++++ b/net/netfilter/core.c
+@@ -89,6 +89,7 @@ void nf_unregister_hook(struct nf_hook_ops *reg)
+ static_key_slow_dec(&nf_hooks_needed[reg->pf][reg->hooknum]);
+ #endif
+ synchronize_net();
++ nf_queue_nf_hook_drop(reg);
+ }
+ EXPORT_SYMBOL(nf_unregister_hook);
+
+diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
+index 5d2b806a862e..38fbc194b9cb 100644
+--- a/net/netfilter/ipvs/ip_vs_core.c
++++ b/net/netfilter/ipvs/ip_vs_core.c
+@@ -319,7 +319,13 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
+ * return *ignored=0 i.e. ICMP and NF_DROP
+ */
+ sched = rcu_dereference(svc->scheduler);
+- dest = sched->schedule(svc, skb, iph);
++ if (sched) {
++ /* read svc->sched_data after svc->scheduler */
++ smp_rmb();
++ dest = sched->schedule(svc, skb, iph);
++ } else {
++ dest = NULL;
++ }
+ if (!dest) {
+ IP_VS_DBG(1, "p-schedule: no dest found.\n");
+ kfree(param.pe_data);
+@@ -467,7 +473,13 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb,
+ }
+
+ sched = rcu_dereference(svc->scheduler);
+- dest = sched->schedule(svc, skb, iph);
++ if (sched) {
++ /* read svc->sched_data after svc->scheduler */
++ smp_rmb();
++ dest = sched->schedule(svc, skb, iph);
++ } else {
++ dest = NULL;
++ }
+ if (dest == NULL) {
+ IP_VS_DBG(1, "Schedule: no dest found.\n");
+ return NULL;
+diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
+index 285eae3a1454..24c554201a76 100644
+--- a/net/netfilter/ipvs/ip_vs_ctl.c
++++ b/net/netfilter/ipvs/ip_vs_ctl.c
+@@ -842,15 +842,16 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
+ __ip_vs_dst_cache_reset(dest);
+ spin_unlock_bh(&dest->dst_lock);
+
+- sched = rcu_dereference_protected(svc->scheduler, 1);
+ if (add) {
+ ip_vs_start_estimator(svc->net, &dest->stats);
+ list_add_rcu(&dest->n_list, &svc->destinations);
+ svc->num_dests++;
+- if (sched->add_dest)
++ sched = rcu_dereference_protected(svc->scheduler, 1);
++ if (sched && sched->add_dest)
+ sched->add_dest(svc, dest);
+ } else {
+- if (sched->upd_dest)
++ sched = rcu_dereference_protected(svc->scheduler, 1);
++ if (sched && sched->upd_dest)
+ sched->upd_dest(svc, dest);
+ }
+ }
+@@ -1084,7 +1085,7 @@ static void __ip_vs_unlink_dest(struct ip_vs_service *svc,
+ struct ip_vs_scheduler *sched;
+
+ sched = rcu_dereference_protected(svc->scheduler, 1);
+- if (sched->del_dest)
++ if (sched && sched->del_dest)
+ sched->del_dest(svc, dest);
+ }
+ }
+@@ -1175,11 +1176,14 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
+ ip_vs_use_count_inc();
+
+ /* Lookup the scheduler by 'u->sched_name' */
+- sched = ip_vs_scheduler_get(u->sched_name);
+- if (sched == NULL) {
+- pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name);
+- ret = -ENOENT;
+- goto out_err;
++ if (strcmp(u->sched_name, "none")) {
++ sched = ip_vs_scheduler_get(u->sched_name);
++ if (!sched) {
++ pr_info("Scheduler module ip_vs_%s not found\n",
++ u->sched_name);
++ ret = -ENOENT;
++ goto out_err;
++ }
+ }
+
+ if (u->pe_name && *u->pe_name) {
+@@ -1240,10 +1244,12 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
+ spin_lock_init(&svc->stats.lock);
+
+ /* Bind the scheduler */
+- ret = ip_vs_bind_scheduler(svc, sched);
+- if (ret)
+- goto out_err;
+- sched = NULL;
++ if (sched) {
++ ret = ip_vs_bind_scheduler(svc, sched);
++ if (ret)
++ goto out_err;
++ sched = NULL;
++ }
+
+ /* Bind the ct retriever */
+ RCU_INIT_POINTER(svc->pe, pe);
+@@ -1291,17 +1297,20 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
+ static int
+ ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u)
+ {
+- struct ip_vs_scheduler *sched, *old_sched;
++ struct ip_vs_scheduler *sched = NULL, *old_sched;
+ struct ip_vs_pe *pe = NULL, *old_pe = NULL;
+ int ret = 0;
+
+ /*
+ * Lookup the scheduler, by 'u->sched_name'
+ */
+- sched = ip_vs_scheduler_get(u->sched_name);
+- if (sched == NULL) {
+- pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name);
+- return -ENOENT;
++ if (strcmp(u->sched_name, "none")) {
++ sched = ip_vs_scheduler_get(u->sched_name);
++ if (!sched) {
++ pr_info("Scheduler module ip_vs_%s not found\n",
++ u->sched_name);
++ return -ENOENT;
++ }
+ }
+ old_sched = sched;
+
+@@ -1329,14 +1338,20 @@ ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u)
+
+ old_sched = rcu_dereference_protected(svc->scheduler, 1);
+ if (sched != old_sched) {
++ if (old_sched) {
++ ip_vs_unbind_scheduler(svc, old_sched);
++ RCU_INIT_POINTER(svc->scheduler, NULL);
++ /* Wait all svc->sched_data users */
++ synchronize_rcu();
++ }
+ /* Bind the new scheduler */
+- ret = ip_vs_bind_scheduler(svc, sched);
+- if (ret) {
+- old_sched = sched;
+- goto out;
++ if (sched) {
++ ret = ip_vs_bind_scheduler(svc, sched);
++ if (ret) {
++ ip_vs_scheduler_put(sched);
++ goto out;
++ }
+ }
+- /* Unbind the old scheduler on success */
+- ip_vs_unbind_scheduler(svc, old_sched);
+ }
+
+ /*
+@@ -1982,6 +1997,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
+ const struct ip_vs_iter *iter = seq->private;
+ const struct ip_vs_dest *dest;
+ struct ip_vs_scheduler *sched = rcu_dereference(svc->scheduler);
++ char *sched_name = sched ? sched->name : "none";
+
+ if (iter->table == ip_vs_svc_table) {
+ #ifdef CONFIG_IP_VS_IPV6
+@@ -1990,18 +2006,18 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
+ ip_vs_proto_name(svc->protocol),
+ &svc->addr.in6,
+ ntohs(svc->port),
+- sched->name);
++ sched_name);
+ else
+ #endif
+ seq_printf(seq, "%s %08X:%04X %s %s ",
+ ip_vs_proto_name(svc->protocol),
+ ntohl(svc->addr.ip),
+ ntohs(svc->port),
+- sched->name,
++ sched_name,
+ (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":"");
+ } else {
+ seq_printf(seq, "FWM %08X %s %s",
+- svc->fwmark, sched->name,
++ svc->fwmark, sched_name,
+ (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":"");
+ }
+
+@@ -2427,13 +2443,15 @@ ip_vs_copy_service(struct ip_vs_service_entry *dst, struct ip_vs_service *src)
+ {
+ struct ip_vs_scheduler *sched;
+ struct ip_vs_kstats kstats;
++ char *sched_name;
+
+ sched = rcu_dereference_protected(src->scheduler, 1);
++ sched_name = sched ? sched->name : "none";
+ dst->protocol = src->protocol;
+ dst->addr = src->addr.ip;
+ dst->port = src->port;
+ dst->fwmark = src->fwmark;
+- strlcpy(dst->sched_name, sched->name, sizeof(dst->sched_name));
++ strlcpy(dst->sched_name, sched_name, sizeof(dst->sched_name));
+ dst->flags = src->flags;
+ dst->timeout = src->timeout / HZ;
+ dst->netmask = src->netmask;
+@@ -2892,6 +2910,7 @@ static int ip_vs_genl_fill_service(struct sk_buff *skb,
+ struct ip_vs_flags flags = { .flags = svc->flags,
+ .mask = ~0 };
+ struct ip_vs_kstats kstats;
++ char *sched_name;
+
+ nl_service = nla_nest_start(skb, IPVS_CMD_ATTR_SERVICE);
+ if (!nl_service)
+@@ -2910,8 +2929,9 @@ static int ip_vs_genl_fill_service(struct sk_buff *skb,
+ }
+
+ sched = rcu_dereference_protected(svc->scheduler, 1);
++ sched_name = sched ? sched->name : "none";
+ pe = rcu_dereference_protected(svc->pe, 1);
+- if (nla_put_string(skb, IPVS_SVC_ATTR_SCHED_NAME, sched->name) ||
++ if (nla_put_string(skb, IPVS_SVC_ATTR_SCHED_NAME, sched_name) ||
+ (pe && nla_put_string(skb, IPVS_SVC_ATTR_PE_NAME, pe->name)) ||
+ nla_put(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags) ||
+ nla_put_u32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ) ||
+diff --git a/net/netfilter/ipvs/ip_vs_sched.c b/net/netfilter/ipvs/ip_vs_sched.c
+index 199760c71f39..7e8141647943 100644
+--- a/net/netfilter/ipvs/ip_vs_sched.c
++++ b/net/netfilter/ipvs/ip_vs_sched.c
+@@ -74,7 +74,7 @@ void ip_vs_unbind_scheduler(struct ip_vs_service *svc,
+
+ if (sched->done_service)
+ sched->done_service(svc);
+- /* svc->scheduler can not be set to NULL */
++ /* svc->scheduler can be set to NULL only by caller */
+ }
+
+
+@@ -147,21 +147,21 @@ void ip_vs_scheduler_put(struct ip_vs_scheduler *scheduler)
+
+ void ip_vs_scheduler_err(struct ip_vs_service *svc, const char *msg)
+ {
+- struct ip_vs_scheduler *sched;
++ struct ip_vs_scheduler *sched = rcu_dereference(svc->scheduler);
++ char *sched_name = sched ? sched->name : "none";
+
+- sched = rcu_dereference(svc->scheduler);
+ if (svc->fwmark) {
+ IP_VS_ERR_RL("%s: FWM %u 0x%08X - %s\n",
+- sched->name, svc->fwmark, svc->fwmark, msg);
++ sched_name, svc->fwmark, svc->fwmark, msg);
+ #ifdef CONFIG_IP_VS_IPV6
+ } else if (svc->af == AF_INET6) {
+ IP_VS_ERR_RL("%s: %s [%pI6c]:%d - %s\n",
+- sched->name, ip_vs_proto_name(svc->protocol),
++ sched_name, ip_vs_proto_name(svc->protocol),
+ &svc->addr.in6, ntohs(svc->port), msg);
+ #endif
+ } else {
+ IP_VS_ERR_RL("%s: %s %pI4:%d - %s\n",
+- sched->name, ip_vs_proto_name(svc->protocol),
++ sched_name, ip_vs_proto_name(svc->protocol),
+ &svc->addr.ip, ntohs(svc->port), msg);
+ }
+ }
+diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
+index 19b9cce6c210..150047c739fa 100644
+--- a/net/netfilter/ipvs/ip_vs_sync.c
++++ b/net/netfilter/ipvs/ip_vs_sync.c
+@@ -612,7 +612,7 @@ static void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp,
+ pkts = atomic_add_return(1, &cp->in_pkts);
+ else
+ pkts = sysctl_sync_threshold(ipvs);
+- ip_vs_sync_conn(net, cp->control, pkts);
++ ip_vs_sync_conn(net, cp, pkts);
+ }
+ }
+
+diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
+index 19986ec5f21a..258f1e05250f 100644
+--- a/net/netfilter/ipvs/ip_vs_xmit.c
++++ b/net/netfilter/ipvs/ip_vs_xmit.c
+@@ -130,7 +130,6 @@ static struct rtable *do_output_route4(struct net *net, __be32 daddr,
+
+ memset(&fl4, 0, sizeof(fl4));
+ fl4.daddr = daddr;
+- fl4.saddr = (rt_mode & IP_VS_RT_MODE_CONNECT) ? *saddr : 0;
+ fl4.flowi4_flags = (rt_mode & IP_VS_RT_MODE_KNOWN_NH) ?
+ FLOWI_FLAG_KNOWN_NH : 0;
+
+@@ -519,10 +518,27 @@ static inline int ip_vs_tunnel_xmit_prepare(struct sk_buff *skb,
+ if (ret == NF_ACCEPT) {
+ nf_reset(skb);
+ skb_forward_csum(skb);
++ if (!skb->sk)
++ skb_sender_cpu_clear(skb);
+ }
+ return ret;
+ }
+
++/* In the event of a remote destination, it's possible that we would have
++ * matches against an old socket (particularly a TIME-WAIT socket). This
++ * causes havoc down the line (ip_local_out et. al. expect regular sockets
++ * and invalid memory accesses will happen) so simply drop the association
++ * in this case.
++*/
++static inline void ip_vs_drop_early_demux_sk(struct sk_buff *skb)
++{
++ /* If dev is set, the packet came from the LOCAL_IN callback and
++ * not from a local TCP socket.
++ */
++ if (skb->dev)
++ skb_orphan(skb);
++}
++
+ /* return NF_STOLEN (sent) or NF_ACCEPT if local=1 (not sent) */
+ static inline int ip_vs_nat_send_or_cont(int pf, struct sk_buff *skb,
+ struct ip_vs_conn *cp, int local)
+@@ -534,12 +550,23 @@ static inline int ip_vs_nat_send_or_cont(int pf, struct sk_buff *skb,
+ ip_vs_notrack(skb);
+ else
+ ip_vs_update_conntrack(skb, cp, 1);
++
++ /* Remove the early_demux association unless it's bound for the
++ * exact same port and address on this host after translation.
++ */
++ if (!local || cp->vport != cp->dport ||
++ !ip_vs_addr_equal(cp->af, &cp->vaddr, &cp->daddr))
++ ip_vs_drop_early_demux_sk(skb);
++
+ if (!local) {
+ skb_forward_csum(skb);
++ if (!skb->sk)
++ skb_sender_cpu_clear(skb);
+ NF_HOOK(pf, NF_INET_LOCAL_OUT, NULL, skb,
+ NULL, skb_dst(skb)->dev, dst_output_sk);
+ } else
+ ret = NF_ACCEPT;
++
+ return ret;
+ }
+
+@@ -553,7 +580,10 @@ static inline int ip_vs_send_or_cont(int pf, struct sk_buff *skb,
+ if (likely(!(cp->flags & IP_VS_CONN_F_NFCT)))
+ ip_vs_notrack(skb);
+ if (!local) {
++ ip_vs_drop_early_demux_sk(skb);
+ skb_forward_csum(skb);
++ if (!skb->sk)
++ skb_sender_cpu_clear(skb);
+ NF_HOOK(pf, NF_INET_LOCAL_OUT, NULL, skb,
+ NULL, skb_dst(skb)->dev, dst_output_sk);
+ } else
+@@ -841,6 +871,8 @@ ip_vs_prepare_tunneled_skb(struct sk_buff *skb, int skb_af,
+ struct ipv6hdr *old_ipv6h = NULL;
+ #endif
+
++ ip_vs_drop_early_demux_sk(skb);
++
+ if (skb_headroom(skb) < max_headroom || skb_cloned(skb)) {
+ new_skb = skb_realloc_headroom(skb, max_headroom);
+ if (!new_skb)
+diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
+index 7a17070c5dab..b45a4223cb05 100644
+--- a/net/netfilter/nf_conntrack_expect.c
++++ b/net/netfilter/nf_conntrack_expect.c
+@@ -219,7 +219,8 @@ static inline int expect_clash(const struct nf_conntrack_expect *a,
+ a->mask.src.u3.all[count] & b->mask.src.u3.all[count];
+ }
+
+- return nf_ct_tuple_mask_cmp(&a->tuple, &b->tuple, &intersect_mask);
++ return nf_ct_tuple_mask_cmp(&a->tuple, &b->tuple, &intersect_mask) &&
++ nf_ct_zone(a->master) == nf_ct_zone(b->master);
+ }
+
+ static inline int expect_matches(const struct nf_conntrack_expect *a,
+diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
+index d1c23940a86a..6b8b0abbfab4 100644
+--- a/net/netfilter/nf_conntrack_netlink.c
++++ b/net/netfilter/nf_conntrack_netlink.c
+@@ -2995,11 +2995,6 @@ ctnetlink_create_expect(struct net *net, u16 zone,
+ }
+
+ err = nf_ct_expect_related_report(exp, portid, report);
+- if (err < 0)
+- goto err_exp;
+-
+- return 0;
+-err_exp:
+ nf_ct_expect_put(exp);
+ err_ct:
+ nf_ct_put(ct);
+diff --git a/net/netfilter/nf_internals.h b/net/netfilter/nf_internals.h
+index ea7f36784b3d..399210693c2a 100644
+--- a/net/netfilter/nf_internals.h
++++ b/net/netfilter/nf_internals.h
+@@ -19,6 +19,7 @@ unsigned int nf_iterate(struct list_head *head, struct sk_buff *skb,
+ /* nf_queue.c */
+ int nf_queue(struct sk_buff *skb, struct nf_hook_ops *elem,
+ struct nf_hook_state *state, unsigned int queuenum);
++void nf_queue_nf_hook_drop(struct nf_hook_ops *ops);
+ int __init netfilter_queue_init(void);
+
+ /* nf_log.c */
+diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
+index 675d12c69e32..a5d41dfa9f05 100644
+--- a/net/netfilter/nf_log.c
++++ b/net/netfilter/nf_log.c
+@@ -107,12 +107,17 @@ EXPORT_SYMBOL(nf_log_register);
+
+ void nf_log_unregister(struct nf_logger *logger)
+ {
++ const struct nf_logger *log;
+ int i;
+
+ mutex_lock(&nf_log_mutex);
+- for (i = 0; i < NFPROTO_NUMPROTO; i++)
+- RCU_INIT_POINTER(loggers[i][logger->type], NULL);
++ for (i = 0; i < NFPROTO_NUMPROTO; i++) {
++ log = nft_log_dereference(loggers[i][logger->type]);
++ if (log == logger)
++ RCU_INIT_POINTER(loggers[i][logger->type], NULL);
++ }
+ mutex_unlock(&nf_log_mutex);
++ synchronize_rcu();
+ }
+ EXPORT_SYMBOL(nf_log_unregister);
+
+diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
+index 2e88032cd5ad..cd60d397fe05 100644
+--- a/net/netfilter/nf_queue.c
++++ b/net/netfilter/nf_queue.c
+@@ -105,6 +105,23 @@ bool nf_queue_entry_get_refs(struct nf_queue_entry *entry)
+ }
+ EXPORT_SYMBOL_GPL(nf_queue_entry_get_refs);
+
++void nf_queue_nf_hook_drop(struct nf_hook_ops *ops)
++{
++ const struct nf_queue_handler *qh;
++ struct net *net;
++
++ rtnl_lock();
++ rcu_read_lock();
++ qh = rcu_dereference(queue_handler);
++ if (qh) {
++ for_each_net(net) {
++ qh->nf_hook_drop(net, ops);
++ }
++ }
++ rcu_read_unlock();
++ rtnl_unlock();
++}
++
+ /*
+ * Any packet that leaves via this function must come back
+ * through nf_reinject().
+diff --git a/net/netfilter/nf_tables_core.c b/net/netfilter/nf_tables_core.c
+index f153b07073af..f77bad46ac68 100644
+--- a/net/netfilter/nf_tables_core.c
++++ b/net/netfilter/nf_tables_core.c
+@@ -114,7 +114,8 @@ unsigned int
+ nft_do_chain(struct nft_pktinfo *pkt, const struct nf_hook_ops *ops)
+ {
+ const struct nft_chain *chain = ops->priv, *basechain = chain;
+- const struct net *net = read_pnet(&nft_base_chain(basechain)->pnet);
++ const struct net *chain_net = read_pnet(&nft_base_chain(basechain)->pnet);
++ const struct net *net = dev_net(pkt->in ? pkt->in : pkt->out);
+ const struct nft_rule *rule;
+ const struct nft_expr *expr, *last;
+ struct nft_regs regs;
+@@ -124,6 +125,10 @@ nft_do_chain(struct nft_pktinfo *pkt, const struct nf_hook_ops *ops)
+ int rulenum;
+ unsigned int gencursor = nft_genmask_cur(net);
+
++ /* Ignore chains that are not for the current network namespace */
++ if (!net_eq(net, chain_net))
++ return NF_ACCEPT;
++
+ do_chain:
+ rulenum = 0;
+ rule = list_entry(&chain->rules, struct nft_rule, list);
+diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
+index 8b117c90ecd7..69e3ceffa14d 100644
+--- a/net/netfilter/nfnetlink.c
++++ b/net/netfilter/nfnetlink.c
+@@ -432,6 +432,7 @@ done:
+ static void nfnetlink_rcv(struct sk_buff *skb)
+ {
+ struct nlmsghdr *nlh = nlmsg_hdr(skb);
++ u_int16_t res_id;
+ int msglen;
+
+ if (nlh->nlmsg_len < NLMSG_HDRLEN ||
+@@ -456,7 +457,12 @@ static void nfnetlink_rcv(struct sk_buff *skb)
+
+ nfgenmsg = nlmsg_data(nlh);
+ skb_pull(skb, msglen);
+- nfnetlink_rcv_batch(skb, nlh, nfgenmsg->res_id);
++ /* Work around old nft using host byte order */
++ if (nfgenmsg->res_id == NFNL_SUBSYS_NFTABLES)
++ res_id = NFNL_SUBSYS_NFTABLES;
++ else
++ res_id = ntohs(nfgenmsg->res_id);
++ nfnetlink_rcv_batch(skb, nlh, res_id);
+ } else {
+ netlink_rcv_skb(skb, &nfnetlink_rcv_msg);
+ }
+diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
+index 11c7682fa0ea..32d0437abdd8 100644
+--- a/net/netfilter/nfnetlink_queue_core.c
++++ b/net/netfilter/nfnetlink_queue_core.c
+@@ -824,6 +824,27 @@ static struct notifier_block nfqnl_dev_notifier = {
+ .notifier_call = nfqnl_rcv_dev_event,
+ };
+
++static int nf_hook_cmp(struct nf_queue_entry *entry, unsigned long ops_ptr)
++{
++ return entry->elem == (struct nf_hook_ops *)ops_ptr;
++}
++
++static void nfqnl_nf_hook_drop(struct net *net, struct nf_hook_ops *hook)
++{
++ struct nfnl_queue_net *q = nfnl_queue_pernet(net);
++ int i;
++
++ rcu_read_lock();
++ for (i = 0; i < INSTANCE_BUCKETS; i++) {
++ struct nfqnl_instance *inst;
++ struct hlist_head *head = &q->instance_table[i];
++
++ hlist_for_each_entry_rcu(inst, head, hlist)
++ nfqnl_flush(inst, nf_hook_cmp, (unsigned long)hook);
++ }
++ rcu_read_unlock();
++}
++
+ static int
+ nfqnl_rcv_nl_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+@@ -1031,7 +1052,8 @@ static const struct nla_policy nfqa_cfg_policy[NFQA_CFG_MAX+1] = {
+ };
+
+ static const struct nf_queue_handler nfqh = {
+- .outfn = &nfqnl_enqueue_packet,
++ .outfn = &nfqnl_enqueue_packet,
++ .nf_hook_drop = &nfqnl_nf_hook_drop,
+ };
+
+ static int
+diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c
+index 7f29cfc76349..4d05c7bf5a03 100644
+--- a/net/netfilter/nft_compat.c
++++ b/net/netfilter/nft_compat.c
+@@ -617,6 +617,13 @@ struct nft_xt {
+
+ static struct nft_expr_type nft_match_type;
+
++static bool nft_match_cmp(const struct xt_match *match,
++ const char *name, u32 rev, u32 family)
++{
++ return strcmp(match->name, name) == 0 && match->revision == rev &&
++ (match->family == NFPROTO_UNSPEC || match->family == family);
++}
++
+ static const struct nft_expr_ops *
+ nft_match_select_ops(const struct nft_ctx *ctx,
+ const struct nlattr * const tb[])
+@@ -624,7 +631,7 @@ nft_match_select_ops(const struct nft_ctx *ctx,
+ struct nft_xt *nft_match;
+ struct xt_match *match;
+ char *mt_name;
+- __u32 rev, family;
++ u32 rev, family;
+
+ if (tb[NFTA_MATCH_NAME] == NULL ||
+ tb[NFTA_MATCH_REV] == NULL ||
+@@ -639,8 +646,7 @@ nft_match_select_ops(const struct nft_ctx *ctx,
+ list_for_each_entry(nft_match, &nft_match_list, head) {
+ struct xt_match *match = nft_match->ops.data;
+
+- if (strcmp(match->name, mt_name) == 0 &&
+- match->revision == rev && match->family == family) {
++ if (nft_match_cmp(match, mt_name, rev, family)) {
+ if (!try_module_get(match->me))
+ return ERR_PTR(-ENOENT);
+
+@@ -691,6 +697,13 @@ static LIST_HEAD(nft_target_list);
+
+ static struct nft_expr_type nft_target_type;
+
++static bool nft_target_cmp(const struct xt_target *tg,
++ const char *name, u32 rev, u32 family)
++{
++ return strcmp(tg->name, name) == 0 && tg->revision == rev &&
++ (tg->family == NFPROTO_UNSPEC || tg->family == family);
++}
++
+ static const struct nft_expr_ops *
+ nft_target_select_ops(const struct nft_ctx *ctx,
+ const struct nlattr * const tb[])
+@@ -698,7 +711,7 @@ nft_target_select_ops(const struct nft_ctx *ctx,
+ struct nft_xt *nft_target;
+ struct xt_target *target;
+ char *tg_name;
+- __u32 rev, family;
++ u32 rev, family;
+
+ if (tb[NFTA_TARGET_NAME] == NULL ||
+ tb[NFTA_TARGET_REV] == NULL ||
+@@ -713,8 +726,7 @@ nft_target_select_ops(const struct nft_ctx *ctx,
+ list_for_each_entry(nft_target, &nft_target_list, head) {
+ struct xt_target *target = nft_target->ops.data;
+
+- if (strcmp(target->name, tg_name) == 0 &&
+- target->revision == rev && target->family == family) {
++ if (nft_target_cmp(target, tg_name, rev, family)) {
+ if (!try_module_get(target->me))
+ return ERR_PTR(-ENOENT);
+
+diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+index 7de33d1af9b6..7fa6d78331ed 100644
+--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
++++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+@@ -382,6 +382,7 @@ static int send_reply(struct svcxprt_rdma *rdma,
+ int byte_count)
+ {
+ struct ib_send_wr send_wr;
++ u32 xdr_off;
+ int sge_no;
+ int sge_bytes;
+ int page_no;
+@@ -416,8 +417,8 @@ static int send_reply(struct svcxprt_rdma *rdma,
+ ctxt->direction = DMA_TO_DEVICE;
+
+ /* Map the payload indicated by 'byte_count' */
++ xdr_off = 0;
+ for (sge_no = 1; byte_count && sge_no < vec->count; sge_no++) {
+- int xdr_off = 0;
+ sge_bytes = min_t(size_t, vec->sge[sge_no].iov_len, byte_count);
+ byte_count -= sge_bytes;
+ ctxt->sge[sge_no].addr =
+@@ -455,6 +456,13 @@ static int send_reply(struct svcxprt_rdma *rdma,
+ }
+ rqstp->rq_next_page = rqstp->rq_respages + 1;
+
++ /* The loop above bumps sc_dma_used for each sge. The
++ * xdr_buf.tail gets a separate sge, but resides in the
++ * same page as xdr_buf.head. Don't count it twice.
++ */
++ if (sge_no > ctxt->count)
++ atomic_dec(&rdma->sc_dma_used);
++
+ if (sge_no > rdma->sc_max_sge) {
+ pr_err("svcrdma: Too many sges (%d)\n", sge_no);
+ goto err;
+diff --git a/sound/arm/Kconfig b/sound/arm/Kconfig
+index 885683a3b0bd..e0406211716b 100644
+--- a/sound/arm/Kconfig
++++ b/sound/arm/Kconfig
+@@ -9,6 +9,14 @@ menuconfig SND_ARM
+ Drivers that are implemented on ASoC can be found in
+ "ALSA for SoC audio support" section.
+
++config SND_PXA2XX_LIB
++ tristate
++ select SND_AC97_CODEC if SND_PXA2XX_LIB_AC97
++ select SND_DMAENGINE_PCM
++
++config SND_PXA2XX_LIB_AC97
++ bool
++
+ if SND_ARM
+
+ config SND_ARMAACI
+@@ -21,13 +29,6 @@ config SND_PXA2XX_PCM
+ tristate
+ select SND_PCM
+
+-config SND_PXA2XX_LIB
+- tristate
+- select SND_AC97_CODEC if SND_PXA2XX_LIB_AC97
+-
+-config SND_PXA2XX_LIB_AC97
+- bool
+-
+ config SND_PXA2XX_AC97
+ tristate "AC97 driver for the Intel PXA2xx chip"
+ depends on ARCH_PXA
+diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
+index 3a24f7739aaa..b791529bf31c 100644
+--- a/sound/pci/hda/patch_cirrus.c
++++ b/sound/pci/hda/patch_cirrus.c
+@@ -634,6 +634,7 @@ static const struct snd_pci_quirk cs4208_mac_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x106b, 0x5e00, "MacBookPro 11,2", CS4208_MBP11),
+ SND_PCI_QUIRK(0x106b, 0x7100, "MacBookAir 6,1", CS4208_MBA6),
+ SND_PCI_QUIRK(0x106b, 0x7200, "MacBookAir 6,2", CS4208_MBA6),
++ SND_PCI_QUIRK(0x106b, 0x7b00, "MacBookPro 12,1", CS4208_MBP11),
+ {} /* terminator */
+ };
+
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 6fe862594e9b..57bb5a559f8e 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4182,6 +4182,24 @@ static void alc_fixup_disable_aamix(struct hda_codec *codec,
+ }
+ }
+
++/* fixup for Thinkpad docks: add dock pins, avoid HP parser fixup */
++static void alc_fixup_tpt440_dock(struct hda_codec *codec,
++ const struct hda_fixup *fix, int action)
++{
++ static const struct hda_pintbl pincfgs[] = {
++ { 0x16, 0x21211010 }, /* dock headphone */
++ { 0x19, 0x21a11010 }, /* dock mic */
++ { }
++ };
++ struct alc_spec *spec = codec->spec;
++
++ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
++ spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP;
++ codec->power_save_node = 0; /* avoid click noises */
++ snd_hda_apply_pincfgs(codec, pincfgs);
++ }
++}
++
+ static void alc_shutup_dell_xps13(struct hda_codec *codec)
+ {
+ struct alc_spec *spec = codec->spec;
+@@ -4507,7 +4525,6 @@ enum {
+ ALC255_FIXUP_HEADSET_MODE_NO_HP_MIC,
+ ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC292_FIXUP_TPT440_DOCK,
+- ALC292_FIXUP_TPT440_DOCK2,
+ ALC283_FIXUP_BXBT2807_MIC,
+ ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED,
+ ALC282_FIXUP_ASPIRE_V5_PINS,
+@@ -4972,17 +4989,7 @@ static const struct hda_fixup alc269_fixups[] = {
+ },
+ [ALC292_FIXUP_TPT440_DOCK] = {
+ .type = HDA_FIXUP_FUNC,
+- .v.func = alc269_fixup_pincfg_no_hp_to_lineout,
+- .chained = true,
+- .chain_id = ALC292_FIXUP_TPT440_DOCK2
+- },
+- [ALC292_FIXUP_TPT440_DOCK2] = {
+- .type = HDA_FIXUP_PINS,
+- .v.pins = (const struct hda_pintbl[]) {
+- { 0x16, 0x21211010 }, /* dock headphone */
+- { 0x19, 0x21a11010 }, /* dock mic */
+- { }
+- },
++ .v.func = alc_fixup_tpt440_dock,
+ .chained = true,
+ .chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST
+ },
+@@ -5226,6 +5233,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x17aa, 0x2212, "Thinkpad T440", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2214, "Thinkpad X240", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2215, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
++ SND_PCI_QUIRK(0x17aa, 0x2223, "ThinkPad T550", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
+ SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
+diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
+index 25f0f45e6640..b1bc66783974 100644
+--- a/sound/pci/hda/patch_sigmatel.c
++++ b/sound/pci/hda/patch_sigmatel.c
+@@ -4522,7 +4522,11 @@ static int patch_stac92hd73xx(struct hda_codec *codec)
+ return err;
+
+ spec = codec->spec;
+- codec->power_save_node = 1;
++ /* enable power_save_node only for new 92HD89xx chips, as it causes
++ * click noises on old 92HD73xx chips.
++ */
++ if ((codec->core.vendor_id & 0xfffffff0) != 0x111d7670)
++ codec->power_save_node = 1;
+ spec->linear_tone_beep = 0;
+ spec->gen.mixer_nid = 0x1d;
+ spec->have_spdif_mux = 1;
+diff --git a/sound/soc/au1x/db1200.c b/sound/soc/au1x/db1200.c
+index c75995f2779c..b914a08258ea 100644
+--- a/sound/soc/au1x/db1200.c
++++ b/sound/soc/au1x/db1200.c
+@@ -129,6 +129,8 @@ static struct snd_soc_dai_link db1300_i2s_dai = {
+ .cpu_dai_name = "au1xpsc_i2s.2",
+ .platform_name = "au1xpsc-pcm.2",
+ .codec_name = "wm8731.0-001b",
++ .dai_fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
++ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &db1200_i2s_wm8731_ops,
+ };
+
+@@ -146,6 +148,8 @@ static struct snd_soc_dai_link db1550_i2s_dai = {
+ .cpu_dai_name = "au1xpsc_i2s.3",
+ .platform_name = "au1xpsc-pcm.3",
+ .codec_name = "wm8731.0-001b",
++ .dai_fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
++ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &db1200_i2s_wm8731_ops,
+ };
+
+diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
+index 3593a1496056..3a29c0ac5d8a 100644
+--- a/sound/soc/codecs/sgtl5000.c
++++ b/sound/soc/codecs/sgtl5000.c
+@@ -1339,8 +1339,8 @@ static int sgtl5000_probe(struct snd_soc_codec *codec)
+ sgtl5000->micbias_resistor << SGTL5000_BIAS_R_SHIFT);
+
+ snd_soc_update_bits(codec, SGTL5000_CHIP_MIC_CTRL,
+- SGTL5000_BIAS_R_MASK,
+- sgtl5000->micbias_voltage << SGTL5000_BIAS_R_SHIFT);
++ SGTL5000_BIAS_VOLT_MASK,
++ sgtl5000->micbias_voltage << SGTL5000_BIAS_VOLT_SHIFT);
+ /*
+ * disable DAP
+ * TODO:
+diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
+index a3e97b46b64e..0d28e3b356f6 100644
+--- a/sound/soc/dwc/designware_i2s.c
++++ b/sound/soc/dwc/designware_i2s.c
+@@ -131,10 +131,10 @@ static inline void i2s_clear_irqs(struct dw_i2s_dev *dev, u32 stream)
+
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ for (i = 0; i < 4; i++)
+- i2s_write_reg(dev->i2s_base, TOR(i), 0);
++ i2s_read_reg(dev->i2s_base, TOR(i));
+ } else {
+ for (i = 0; i < 4; i++)
+- i2s_write_reg(dev->i2s_base, ROR(i), 0);
++ i2s_read_reg(dev->i2s_base, ROR(i));
+ }
+ }
+
+diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
+index 39cea80846c3..f2bf8661dd21 100644
+--- a/sound/soc/pxa/Kconfig
++++ b/sound/soc/pxa/Kconfig
+@@ -1,7 +1,6 @@
+ config SND_PXA2XX_SOC
+ tristate "SoC Audio for the Intel PXA2xx chip"
+ depends on ARCH_PXA
+- select SND_ARM
+ select SND_PXA2XX_LIB
+ help
+ Say Y or M if you want to add support for codecs attached to
+@@ -25,7 +24,6 @@ config SND_PXA2XX_AC97
+ config SND_PXA2XX_SOC_AC97
+ tristate
+ select AC97_BUS
+- select SND_ARM
+ select SND_PXA2XX_LIB_AC97
+ select SND_SOC_AC97_BUS
+
+diff --git a/sound/soc/pxa/pxa2xx-ac97.c b/sound/soc/pxa/pxa2xx-ac97.c
+index 1f6054650991..9e4b04e0fbd1 100644
+--- a/sound/soc/pxa/pxa2xx-ac97.c
++++ b/sound/soc/pxa/pxa2xx-ac97.c
+@@ -49,7 +49,7 @@ static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
+ .reset = pxa2xx_ac97_cold_reset,
+ };
+
+-static unsigned long pxa2xx_ac97_pcm_stereo_in_req = 12;
++static unsigned long pxa2xx_ac97_pcm_stereo_in_req = 11;
+ static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
+ .addr = __PREG(PCDR),
+ .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
+@@ -57,7 +57,7 @@ static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
+ .filter_data = &pxa2xx_ac97_pcm_stereo_in_req,
+ };
+
+-static unsigned long pxa2xx_ac97_pcm_stereo_out_req = 11;
++static unsigned long pxa2xx_ac97_pcm_stereo_out_req = 12;
+ static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
+ .addr = __PREG(PCDR),
+ .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
+diff --git a/sound/synth/emux/emux_oss.c b/sound/synth/emux/emux_oss.c
+index 82e350e9501c..ac75816ada7c 100644
+--- a/sound/synth/emux/emux_oss.c
++++ b/sound/synth/emux/emux_oss.c
+@@ -69,7 +69,8 @@ snd_emux_init_seq_oss(struct snd_emux *emu)
+ struct snd_seq_oss_reg *arg;
+ struct snd_seq_device *dev;
+
+- if (snd_seq_device_new(emu->card, 0, SNDRV_SEQ_DEV_ID_OSS,
++ /* using device#1 here for avoiding conflicts with OPL3 */
++ if (snd_seq_device_new(emu->card, 1, SNDRV_SEQ_DEV_ID_OSS,
+ sizeof(struct snd_seq_oss_reg), &dev) < 0)
+ return;
+
+diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
+index 29f94f6f0d9e..ed5461f065bd 100644
+--- a/tools/lib/traceevent/event-parse.c
++++ b/tools/lib/traceevent/event-parse.c
+@@ -3721,7 +3721,7 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
+ struct format_field *field;
+ struct printk_map *printk;
+ long long val, fval;
+- unsigned long addr;
++ unsigned long long addr;
+ char *str;
+ unsigned char *hex;
+ int print;
+@@ -3754,13 +3754,30 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
+ */
+ if (!(field->flags & FIELD_IS_ARRAY) &&
+ field->size == pevent->long_size) {
+- addr = *(unsigned long *)(data + field->offset);
++
++ /* Handle heterogeneous recording and processing
++ * architectures
++ *
++ * CASE I:
++ * Traces recorded on 32-bit devices (32-bit
++ * addressing) and processed on 64-bit devices:
++ * In this case, only 32 bits should be read.
++ *
++ * CASE II:
++ * Traces recorded on 64 bit devices and processed
++ * on 32-bit devices:
++ * In this case, 64 bits must be read.
++ */
++ addr = (pevent->long_size == 8) ?
++ *(unsigned long long *)(data + field->offset) :
++ (unsigned long long)*(unsigned int *)(data + field->offset);
++
+ /* Check if it matches a print format */
+ printk = find_printk(pevent, addr);
+ if (printk)
+ trace_seq_puts(s, printk->printk);
+ else
+- trace_seq_printf(s, "%lx", addr);
++ trace_seq_printf(s, "%llx", addr);
+ break;
+ }
+ str = malloc(len + 1);
+diff --git a/tools/perf/arch/alpha/Build b/tools/perf/arch/alpha/Build
+new file mode 100644
+index 000000000000..1bb8bf6d7fd4
+--- /dev/null
++++ b/tools/perf/arch/alpha/Build
+@@ -0,0 +1 @@
++# empty
+diff --git a/tools/perf/arch/mips/Build b/tools/perf/arch/mips/Build
+new file mode 100644
+index 000000000000..1bb8bf6d7fd4
+--- /dev/null
++++ b/tools/perf/arch/mips/Build
+@@ -0,0 +1 @@
++# empty
+diff --git a/tools/perf/arch/parisc/Build b/tools/perf/arch/parisc/Build
+new file mode 100644
+index 000000000000..1bb8bf6d7fd4
+--- /dev/null
++++ b/tools/perf/arch/parisc/Build
+@@ -0,0 +1 @@
++# empty
+diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
+index f7b8218785f6..a1f3ffc2786d 100644
+--- a/tools/perf/builtin-stat.c
++++ b/tools/perf/builtin-stat.c
+@@ -1227,7 +1227,7 @@ static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
+ static void print_aggr(char *prefix)
+ {
+ struct perf_evsel *counter;
+- int cpu, cpu2, s, s2, id, nr;
++ int cpu, s, s2, id, nr;
+ double uval;
+ u64 ena, run, val;
+
+@@ -1240,8 +1240,7 @@ static void print_aggr(char *prefix)
+ val = ena = run = 0;
+ nr = 0;
+ for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
+- cpu2 = perf_evsel__cpus(counter)->map[cpu];
+- s2 = aggr_get_id(evsel_list->cpus, cpu2);
++ s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
+ if (s2 != id)
+ continue;
+ val += counter->counts->cpu[cpu].val;
+diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
+index 918fd8ae2d80..23eea5e7fa94 100644
+--- a/tools/perf/util/header.c
++++ b/tools/perf/util/header.c
+@@ -1426,7 +1426,7 @@ static int process_nrcpus(struct perf_file_section *section __maybe_unused,
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+- ph->env.nr_cpus_online = nr;
++ ph->env.nr_cpus_avail = nr;
+
+ ret = readn(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+@@ -1435,7 +1435,7 @@ static int process_nrcpus(struct perf_file_section *section __maybe_unused,
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+- ph->env.nr_cpus_avail = nr;
++ ph->env.nr_cpus_online = nr;
+ return 0;
+ }
+
+diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
+index cc22b9158b93..c7966c0fa13e 100644
+--- a/tools/perf/util/hist.c
++++ b/tools/perf/util/hist.c
+@@ -151,6 +151,9 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
+ hists__new_col_len(hists, HISTC_LOCAL_WEIGHT, 12);
+ hists__new_col_len(hists, HISTC_GLOBAL_WEIGHT, 12);
+
++ if (h->srcline)
++ hists__new_col_len(hists, HISTC_SRCLINE, strlen(h->srcline));
++
+ if (h->transaction)
+ hists__new_col_len(hists, HISTC_TRANSACTION,
+ hist_entry__transaction_len());
+diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
+index a7ab6063e038..3ddfab315e19 100644
+--- a/tools/perf/util/symbol-elf.c
++++ b/tools/perf/util/symbol-elf.c
+@@ -1253,8 +1253,6 @@ out_close:
+ static int kcore__init(struct kcore *kcore, char *filename, int elfclass,
+ bool temp)
+ {
+- GElf_Ehdr *ehdr;
+-
+ kcore->elfclass = elfclass;
+
+ if (temp)
+@@ -1271,9 +1269,7 @@ static int kcore__init(struct kcore *kcore, char *filename, int elfclass,
+ if (!gelf_newehdr(kcore->elf, elfclass))
+ goto out_end;
+
+- ehdr = gelf_getehdr(kcore->elf, &kcore->ehdr);
+- if (!ehdr)
+- goto out_end;
++ memset(&kcore->ehdr, 0, sizeof(GElf_Ehdr));
+
+ return 0;
+
+@@ -1330,23 +1326,18 @@ static int kcore__copy_hdr(struct kcore *from, struct kcore *to, size_t count)
+ static int kcore__add_phdr(struct kcore *kcore, int idx, off_t offset,
+ u64 addr, u64 len)
+ {
+- GElf_Phdr gphdr;
+- GElf_Phdr *phdr;
+-
+- phdr = gelf_getphdr(kcore->elf, idx, &gphdr);
+- if (!phdr)
+- return -1;
+-
+- phdr->p_type = PT_LOAD;
+- phdr->p_flags = PF_R | PF_W | PF_X;
+- phdr->p_offset = offset;
+- phdr->p_vaddr = addr;
+- phdr->p_paddr = 0;
+- phdr->p_filesz = len;
+- phdr->p_memsz = len;
+- phdr->p_align = page_size;
+-
+- if (!gelf_update_phdr(kcore->elf, idx, phdr))
++ GElf_Phdr phdr = {
++ .p_type = PT_LOAD,
++ .p_flags = PF_R | PF_W | PF_X,
++ .p_offset = offset,
++ .p_vaddr = addr,
++ .p_paddr = 0,
++ .p_filesz = len,
++ .p_memsz = len,
++ .p_align = page_size,
++ };
++
++ if (!gelf_update_phdr(kcore->elf, idx, &phdr))
+ return -1;
+
+ return 0;
+diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
+index 9ff4193dfa49..79db45336e3a 100644
+--- a/virt/kvm/eventfd.c
++++ b/virt/kvm/eventfd.c
+@@ -771,40 +771,14 @@ static enum kvm_bus ioeventfd_bus_from_flags(__u32 flags)
+ return KVM_MMIO_BUS;
+ }
+
+-static int
+-kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
++static int kvm_assign_ioeventfd_idx(struct kvm *kvm,
++ enum kvm_bus bus_idx,
++ struct kvm_ioeventfd *args)
+ {
+- enum kvm_bus bus_idx;
+- struct _ioeventfd *p;
+- struct eventfd_ctx *eventfd;
+- int ret;
+-
+- bus_idx = ioeventfd_bus_from_flags(args->flags);
+- /* must be natural-word sized, or 0 to ignore length */
+- switch (args->len) {
+- case 0:
+- case 1:
+- case 2:
+- case 4:
+- case 8:
+- break;
+- default:
+- return -EINVAL;
+- }
+-
+- /* check for range overflow */
+- if (args->addr + args->len < args->addr)
+- return -EINVAL;
+
+- /* check for extra flags that we don't understand */
+- if (args->flags & ~KVM_IOEVENTFD_VALID_FLAG_MASK)
+- return -EINVAL;
+-
+- /* ioeventfd with no length can't be combined with DATAMATCH */
+- if (!args->len &&
+- args->flags & (KVM_IOEVENTFD_FLAG_PIO |
+- KVM_IOEVENTFD_FLAG_DATAMATCH))
+- return -EINVAL;
++ struct eventfd_ctx *eventfd;
++ struct _ioeventfd *p;
++ int ret;
+
+ eventfd = eventfd_ctx_fdget(args->fd);
+ if (IS_ERR(eventfd))
+@@ -843,16 +817,6 @@ kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+ if (ret < 0)
+ goto unlock_fail;
+
+- /* When length is ignored, MMIO is also put on a separate bus, for
+- * faster lookups.
+- */
+- if (!args->len && !(args->flags & KVM_IOEVENTFD_FLAG_PIO)) {
+- ret = kvm_io_bus_register_dev(kvm, KVM_FAST_MMIO_BUS,
+- p->addr, 0, &p->dev);
+- if (ret < 0)
+- goto register_fail;
+- }
+-
+ kvm->buses[bus_idx]->ioeventfd_count++;
+ list_add_tail(&p->list, &kvm->ioeventfds);
+
+@@ -860,8 +824,6 @@ kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+
+ return 0;
+
+-register_fail:
+- kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);
+ unlock_fail:
+ mutex_unlock(&kvm->slots_lock);
+
+@@ -873,14 +835,13 @@ fail:
+ }
+
+ static int
+-kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
++kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,
++ struct kvm_ioeventfd *args)
+ {
+- enum kvm_bus bus_idx;
+ struct _ioeventfd *p, *tmp;
+ struct eventfd_ctx *eventfd;
+ int ret = -ENOENT;
+
+- bus_idx = ioeventfd_bus_from_flags(args->flags);
+ eventfd = eventfd_ctx_fdget(args->fd);
+ if (IS_ERR(eventfd))
+ return PTR_ERR(eventfd);
+@@ -901,10 +862,6 @@ kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+ continue;
+
+ kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);
+- if (!p->length) {
+- kvm_io_bus_unregister_dev(kvm, KVM_FAST_MMIO_BUS,
+- &p->dev);
+- }
+ kvm->buses[bus_idx]->ioeventfd_count--;
+ ioeventfd_release(p);
+ ret = 0;
+@@ -918,6 +875,71 @@ kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+ return ret;
+ }
+
++static int kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
++{
++ enum kvm_bus bus_idx = ioeventfd_bus_from_flags(args->flags);
++ int ret = kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);
++
++ if (!args->len && bus_idx == KVM_MMIO_BUS)
++ kvm_deassign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);
++
++ return ret;
++}
++
++static int
++kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
++{
++ enum kvm_bus bus_idx;
++ int ret;
++
++ bus_idx = ioeventfd_bus_from_flags(args->flags);
++ /* must be natural-word sized, or 0 to ignore length */
++ switch (args->len) {
++ case 0:
++ case 1:
++ case 2:
++ case 4:
++ case 8:
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ /* check for range overflow */
++ if (args->addr + args->len < args->addr)
++ return -EINVAL;
++
++ /* check for extra flags that we don't understand */
++ if (args->flags & ~KVM_IOEVENTFD_VALID_FLAG_MASK)
++ return -EINVAL;
++
++ /* ioeventfd with no length can't be combined with DATAMATCH */
++ if (!args->len &&
++ args->flags & (KVM_IOEVENTFD_FLAG_PIO |
++ KVM_IOEVENTFD_FLAG_DATAMATCH))
++ return -EINVAL;
++
++ ret = kvm_assign_ioeventfd_idx(kvm, bus_idx, args);
++ if (ret)
++ goto fail;
++
++ /* When length is ignored, MMIO is also put on a separate bus, for
++ * faster lookups.
++ */
++ if (!args->len && bus_idx == KVM_MMIO_BUS) {
++ ret = kvm_assign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);
++ if (ret < 0)
++ goto fast_fail;
++ }
++
++ return 0;
++
++fast_fail:
++ kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);
++fail:
++ return ret;
++}
++
+ int
+ kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+ {
+diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
+index 90977418aeb6..85422985235f 100644
+--- a/virt/kvm/kvm_main.c
++++ b/virt/kvm/kvm_main.c
+@@ -2935,10 +2935,25 @@ static void kvm_io_bus_destroy(struct kvm_io_bus *bus)
+ static inline int kvm_io_bus_cmp(const struct kvm_io_range *r1,
+ const struct kvm_io_range *r2)
+ {
+- if (r1->addr < r2->addr)
++ gpa_t addr1 = r1->addr;
++ gpa_t addr2 = r2->addr;
++
++ if (addr1 < addr2)
+ return -1;
+- if (r1->addr + r1->len > r2->addr + r2->len)
++
++ /* If r2->len == 0, match the exact address. If r2->len != 0,
++ * accept any overlapping write. Any order is acceptable for
++ * overlapping ranges, because kvm_io_bus_get_first_dev ensures
++ * we process all of them.
++ */
++ if (r2->len) {
++ addr1 += r1->len;
++ addr2 += r2->len;
++ }
++
++ if (addr1 > addr2)
+ return 1;
++
+ return 0;
+ }
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-10-03 16:07 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-10-03 16:07 UTC (permalink / raw
To: gentoo-commits
commit: 516de23c184688cd1071c1c815fbb2e9827612ad
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sat Oct 3 16:07:16 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sat Oct 3 16:07:16 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=516de23c
Linux patch 4.1.10
0000_README | 4 +
1009_linux-4.1.10.patch | 1353 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1357 insertions(+)
diff --git a/0000_README b/0000_README
index 348e8f5..b9b941a 100644
--- a/0000_README
+++ b/0000_README
@@ -79,6 +79,10 @@ Patch: 1008_linux-4.1.9.patch
From: http://www.kernel.org
Desc: Linux 4.1.9
+Patch: 1009_linux-4.1.10.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.10
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1009_linux-4.1.10.patch b/1009_linux-4.1.10.patch
new file mode 100644
index 0000000..8d80808
--- /dev/null
+++ b/1009_linux-4.1.10.patch
@@ -0,0 +1,1353 @@
+diff --git a/Documentation/devicetree/bindings/net/ethernet.txt b/Documentation/devicetree/bindings/net/ethernet.txt
+index 41b3f3f864e8..5d88f37480b6 100644
+--- a/Documentation/devicetree/bindings/net/ethernet.txt
++++ b/Documentation/devicetree/bindings/net/ethernet.txt
+@@ -25,7 +25,11 @@ The following properties are common to the Ethernet controllers:
+ flow control thresholds.
+ - tx-fifo-depth: the size of the controller's transmit fifo in bytes. This
+ is used for components that can have configurable fifo sizes.
++- managed: string, specifies the PHY management type. Supported values are:
++ "auto", "in-band-status". "auto" is the default, it usess MDIO for
++ management if fixed-link is not specified.
+
+ Child nodes of the Ethernet controller are typically the individual PHY devices
+ connected via the MDIO bus (sometimes the MDIO bus controller is separate).
+ They are described in the phy.txt file in this same directory.
++For non-MDIO PHY management see fixed-link.txt.
+diff --git a/Makefile b/Makefile
+index e071176b2ce6..d02f16b510dc 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 9
++SUBLEVEL = 10
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c
+index f1ff39a3d1c1..54d946a9eee6 100644
+--- a/drivers/block/zram/zcomp.c
++++ b/drivers/block/zram/zcomp.c
+@@ -325,12 +325,14 @@ void zcomp_destroy(struct zcomp *comp)
+ * allocate new zcomp and initialize it. return compressing
+ * backend pointer or ERR_PTR if things went bad. ERR_PTR(-EINVAL)
+ * if requested algorithm is not supported, ERR_PTR(-ENOMEM) in
+- * case of allocation error.
++ * case of allocation error, or any other error potentially
++ * returned by functions zcomp_strm_{multi,single}_create.
+ */
+ struct zcomp *zcomp_create(const char *compress, int max_strm)
+ {
+ struct zcomp *comp;
+ struct zcomp_backend *backend;
++ int error;
+
+ backend = find_backend(compress);
+ if (!backend)
+@@ -342,12 +344,12 @@ struct zcomp *zcomp_create(const char *compress, int max_strm)
+
+ comp->backend = backend;
+ if (max_strm > 1)
+- zcomp_strm_multi_create(comp, max_strm);
++ error = zcomp_strm_multi_create(comp, max_strm);
+ else
+- zcomp_strm_single_create(comp);
+- if (!comp->stream) {
++ error = zcomp_strm_single_create(comp);
++ if (error) {
+ kfree(comp);
+- return ERR_PTR(-ENOMEM);
++ return ERR_PTR(error);
+ }
+ return comp;
+ }
+diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
+index cedb572bf25a..db9ebbc1a732 100644
+--- a/drivers/net/dsa/bcm_sf2.c
++++ b/drivers/net/dsa/bcm_sf2.c
+@@ -417,7 +417,7 @@ static int bcm_sf2_sw_fast_age_port(struct dsa_switch *ds, int port)
+ core_writel(priv, port, CORE_FAST_AGE_PORT);
+
+ reg = core_readl(priv, CORE_FAST_AGE_CTRL);
+- reg |= EN_AGE_PORT | FAST_AGE_STR_DONE;
++ reg |= EN_AGE_PORT | EN_AGE_DYNAMIC | FAST_AGE_STR_DONE;
+ core_writel(priv, reg, CORE_FAST_AGE_CTRL);
+
+ do {
+@@ -431,6 +431,8 @@ static int bcm_sf2_sw_fast_age_port(struct dsa_switch *ds, int port)
+ if (!timeout)
+ return -ETIMEDOUT;
+
++ core_writel(priv, 0, CORE_FAST_AGE_CTRL);
++
+ return 0;
+ }
+
+@@ -506,7 +508,7 @@ static int bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port,
+ u32 reg;
+
+ reg = core_readl(priv, CORE_G_PCTL_PORT(port));
+- cur_hw_state = reg >> G_MISTP_STATE_SHIFT;
++ cur_hw_state = reg & (G_MISTP_STATE_MASK << G_MISTP_STATE_SHIFT);
+
+ switch (state) {
+ case BR_STATE_DISABLED:
+@@ -530,10 +532,12 @@ static int bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port,
+ }
+
+ /* Fast-age ARL entries if we are moving a port from Learning or
+- * Forwarding state to Disabled, Blocking or Listening state
++ * Forwarding (cur_hw_state) state to Disabled, Blocking or Listening
++ * state (hw_state)
+ */
+ if (cur_hw_state != hw_state) {
+- if (cur_hw_state & 4 && !(hw_state & 4)) {
++ if (cur_hw_state >= G_MISTP_LEARN_STATE &&
++ hw_state <= G_MISTP_LISTEN_STATE) {
+ ret = bcm_sf2_sw_fast_age_port(ds, port);
+ if (ret) {
+ pr_err("%s: fast-ageing failed\n", __func__);
+@@ -889,15 +893,11 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
+ struct fixed_phy_status *status)
+ {
+ struct bcm_sf2_priv *priv = ds_to_priv(ds);
+- u32 duplex, pause, speed;
++ u32 duplex, pause;
+ u32 reg;
+
+ duplex = core_readl(priv, CORE_DUPSTS);
+ pause = core_readl(priv, CORE_PAUSESTS);
+- speed = core_readl(priv, CORE_SPDSTS);
+-
+- speed >>= (port * SPDSTS_SHIFT);
+- speed &= SPDSTS_MASK;
+
+ status->link = 0;
+
+@@ -925,18 +925,6 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
+ reg &= ~LINK_STS;
+ core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port));
+
+- switch (speed) {
+- case SPDSTS_10:
+- status->speed = SPEED_10;
+- break;
+- case SPDSTS_100:
+- status->speed = SPEED_100;
+- break;
+- case SPDSTS_1000:
+- status->speed = SPEED_1000;
+- break;
+- }
+-
+ if ((pause & (1 << port)) &&
+ (pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) {
+ status->asym_pause = 1;
+diff --git a/drivers/net/dsa/bcm_sf2.h b/drivers/net/dsa/bcm_sf2.h
+index 22e2ebf31333..789d7b7737da 100644
+--- a/drivers/net/dsa/bcm_sf2.h
++++ b/drivers/net/dsa/bcm_sf2.h
+@@ -112,8 +112,8 @@ static inline u64 name##_readq(struct bcm_sf2_priv *priv, u32 off) \
+ spin_unlock(&priv->indir_lock); \
+ return (u64)indir << 32 | dir; \
+ } \
+-static inline void name##_writeq(struct bcm_sf2_priv *priv, u32 off, \
+- u64 val) \
++static inline void name##_writeq(struct bcm_sf2_priv *priv, u64 val, \
++ u32 off) \
+ { \
+ spin_lock(&priv->indir_lock); \
+ reg_writel(priv, upper_32_bits(val), REG_DIR_DATA_WRITE); \
+diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
+index da48e66377b5..8207877d6237 100644
+--- a/drivers/net/ethernet/altera/altera_tse_main.c
++++ b/drivers/net/ethernet/altera/altera_tse_main.c
+@@ -511,8 +511,7 @@ static int tse_poll(struct napi_struct *napi, int budget)
+
+ if (rxcomplete < budget) {
+
+- napi_gro_flush(napi, false);
+- __napi_complete(napi);
++ napi_complete(napi);
+
+ netdev_dbg(priv->dev,
+ "NAPI Complete, did %d packets with budget %d\n",
+diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
+index 66d47e448e4d..570390b5cd42 100644
+--- a/drivers/net/ethernet/freescale/fec_main.c
++++ b/drivers/net/ethernet/freescale/fec_main.c
+@@ -1396,6 +1396,7 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id)
+ if ((status & BD_ENET_RX_LAST) == 0)
+ netdev_err(ndev, "rcv is not +last\n");
+
++ writel(FEC_ENET_RXF, fep->hwp + FEC_IEVENT);
+
+ /* Check for errors. */
+ if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
+diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
+index 74d0389bf233..4d608f0117cd 100644
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -3029,8 +3029,8 @@ static int mvneta_probe(struct platform_device *pdev)
+ const char *dt_mac_addr;
+ char hw_mac_addr[ETH_ALEN];
+ const char *mac_from;
++ const char *managed;
+ int phy_mode;
+- int fixed_phy = 0;
+ int err;
+
+ /* Our multiqueue support is not complete, so for now, only
+@@ -3064,7 +3064,6 @@ static int mvneta_probe(struct platform_device *pdev)
+ dev_err(&pdev->dev, "cannot register fixed PHY\n");
+ goto err_free_irq;
+ }
+- fixed_phy = 1;
+
+ /* In the case of a fixed PHY, the DT node associated
+ * to the PHY is the Ethernet MAC DT node.
+@@ -3088,8 +3087,10 @@ static int mvneta_probe(struct platform_device *pdev)
+ pp = netdev_priv(dev);
+ pp->phy_node = phy_node;
+ pp->phy_interface = phy_mode;
+- pp->use_inband_status = (phy_mode == PHY_INTERFACE_MODE_SGMII) &&
+- fixed_phy;
++
++ err = of_property_read_string(dn, "managed", &managed);
++ pp->use_inband_status = (err == 0 &&
++ strcmp(managed, "in-band-status") == 0);
+
+ pp->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(pp->clk)) {
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+index eab4e080ebd2..80aac20104de 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+@@ -1256,8 +1256,6 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
+ rss_context->hash_fn = MLX4_RSS_HASH_TOP;
+ memcpy(rss_context->rss_key, priv->rss_key,
+ MLX4_EN_RSS_KEY_SIZE);
+- netdev_rss_key_fill(rss_context->rss_key,
+- MLX4_EN_RSS_KEY_SIZE);
+ } else {
+ en_err(priv, "Unknown RSS hash function requested\n");
+ err = -EINVAL;
+diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
+index 8c350c5d54ad..58858c5589db 100644
+--- a/drivers/net/macvtap.c
++++ b/drivers/net/macvtap.c
+@@ -1054,10 +1054,10 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
+ return 0;
+
+ case TUNSETSNDBUF:
+- if (get_user(u, up))
++ if (get_user(s, sp))
+ return -EFAULT;
+
+- q->sk.sk_sndbuf = u;
++ q->sk.sk_sndbuf = s;
+ return 0;
+
+ case TUNGETVNETHDRSZ:
+diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c
+index 1960b46add65..479b93f9581c 100644
+--- a/drivers/net/phy/fixed_phy.c
++++ b/drivers/net/phy/fixed_phy.c
+@@ -52,6 +52,10 @@ static int fixed_phy_update_regs(struct fixed_phy *fp)
+ u16 lpagb = 0;
+ u16 lpa = 0;
+
++ if (!fp->status.link)
++ goto done;
++ bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE;
++
+ if (fp->status.duplex) {
+ bmcr |= BMCR_FULLDPLX;
+
+@@ -96,15 +100,13 @@ static int fixed_phy_update_regs(struct fixed_phy *fp)
+ }
+ }
+
+- if (fp->status.link)
+- bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE;
+-
+ if (fp->status.pause)
+ lpa |= LPA_PAUSE_CAP;
+
+ if (fp->status.asym_pause)
+ lpa |= LPA_PAUSE_ASYM;
+
++done:
+ fp->regs[MII_PHYSID1] = 0;
+ fp->regs[MII_PHYSID2] = 0;
+
+diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
+index 3c86b107275a..e0498571ae26 100644
+--- a/drivers/net/usb/usbnet.c
++++ b/drivers/net/usb/usbnet.c
+@@ -778,7 +778,7 @@ int usbnet_stop (struct net_device *net)
+ {
+ struct usbnet *dev = netdev_priv(net);
+ struct driver_info *info = dev->driver_info;
+- int retval, pm;
++ int retval, pm, mpn;
+
+ clear_bit(EVENT_DEV_OPEN, &dev->flags);
+ netif_stop_queue (net);
+@@ -809,6 +809,8 @@ int usbnet_stop (struct net_device *net)
+
+ usbnet_purge_paused_rxq(dev);
+
++ mpn = !test_and_clear_bit(EVENT_NO_RUNTIME_PM, &dev->flags);
++
+ /* deferred work (task, timer, softirq) must also stop.
+ * can't flush_scheduled_work() until we drop rtnl (later),
+ * else workers could deadlock; so make workers a NOP.
+@@ -819,8 +821,7 @@ int usbnet_stop (struct net_device *net)
+ if (!pm)
+ usb_autopm_put_interface(dev->intf);
+
+- if (info->manage_power &&
+- !test_and_clear_bit(EVENT_NO_RUNTIME_PM, &dev->flags))
++ if (info->manage_power && mpn)
+ info->manage_power(dev, 0);
+ else
+ usb_autopm_put_interface(dev->intf);
+diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
+index 21a0fbf1ed94..0085b8df83e2 100644
+--- a/drivers/net/vxlan.c
++++ b/drivers/net/vxlan.c
+@@ -2212,6 +2212,8 @@ static int vxlan_open(struct net_device *dev)
+
+ if (vxlan_addr_multicast(&vxlan->default_dst.remote_ip)) {
+ ret = vxlan_igmp_join(vxlan);
++ if (ret == -EADDRINUSE)
++ ret = 0;
+ if (ret) {
+ vxlan_sock_release(vs);
+ return ret;
+diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
+index 0c064485d1c2..bec8ec2b31f6 100644
+--- a/drivers/of/of_mdio.c
++++ b/drivers/of/of_mdio.c
+@@ -263,7 +263,8 @@ EXPORT_SYMBOL(of_phy_attach);
+ bool of_phy_is_fixed_link(struct device_node *np)
+ {
+ struct device_node *dn;
+- int len;
++ int len, err;
++ const char *managed;
+
+ /* New binding */
+ dn = of_get_child_by_name(np, "fixed-link");
+@@ -272,6 +273,10 @@ bool of_phy_is_fixed_link(struct device_node *np)
+ return true;
+ }
+
++ err = of_property_read_string(np, "managed", &managed);
++ if (err == 0 && strcmp(managed, "auto") != 0)
++ return true;
++
+ /* Old binding */
+ if (of_get_property(np, "fixed-link", &len) &&
+ len == (5 * sizeof(__be32)))
+@@ -286,8 +291,18 @@ int of_phy_register_fixed_link(struct device_node *np)
+ struct fixed_phy_status status = {};
+ struct device_node *fixed_link_node;
+ const __be32 *fixed_link_prop;
+- int len;
++ int len, err;
+ struct phy_device *phy;
++ const char *managed;
++
++ err = of_property_read_string(np, "managed", &managed);
++ if (err == 0) {
++ if (strcmp(managed, "in-band-status") == 0) {
++ /* status is zeroed, namely its .link member */
++ phy = fixed_phy_register(PHY_POLL, &status, np);
++ return IS_ERR(phy) ? PTR_ERR(phy) : 0;
++ }
++ }
+
+ /* New binding */
+ fixed_link_node = of_get_child_by_name(np, "fixed-link");
+diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
+index 06697315a088..fb4dd7b3ee71 100644
+--- a/drivers/platform/x86/hp-wmi.c
++++ b/drivers/platform/x86/hp-wmi.c
+@@ -54,8 +54,9 @@ MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
+ #define HPWMI_HARDWARE_QUERY 0x4
+ #define HPWMI_WIRELESS_QUERY 0x5
+ #define HPWMI_BIOS_QUERY 0x9
++#define HPWMI_FEATURE_QUERY 0xb
+ #define HPWMI_HOTKEY_QUERY 0xc
+-#define HPWMI_FEATURE_QUERY 0xd
++#define HPWMI_FEATURE2_QUERY 0xd
+ #define HPWMI_WIRELESS2_QUERY 0x1b
+ #define HPWMI_POSTCODEERROR_QUERY 0x2a
+
+@@ -295,25 +296,33 @@ static int hp_wmi_tablet_state(void)
+ return (state & 0x4) ? 1 : 0;
+ }
+
+-static int __init hp_wmi_bios_2009_later(void)
++static int __init hp_wmi_bios_2008_later(void)
+ {
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+- if (ret)
+- return ret;
++ if (!ret)
++ return 1;
+
+- return (state & 0x10) ? 1 : 0;
++ return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
+ }
+
+-static int hp_wmi_enable_hotkeys(void)
++static int __init hp_wmi_bios_2009_later(void)
+ {
+- int ret;
+- int query = 0x6e;
++ int state = 0;
++ int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, 0, &state,
++ sizeof(state), sizeof(state));
++ if (!ret)
++ return 1;
+
+- ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &query, sizeof(query),
+- 0);
++ return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
++}
+
++static int __init hp_wmi_enable_hotkeys(void)
++{
++ int value = 0x6e;
++ int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &value,
++ sizeof(value), 0);
+ if (ret)
+ return -EINVAL;
+ return 0;
+@@ -663,7 +672,7 @@ static int __init hp_wmi_input_setup(void)
+ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+
+- if (hp_wmi_bios_2009_later() == 4)
++ if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
+ hp_wmi_enable_hotkeys();
+
+ status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
+diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
+index ff667e18b2d6..9ba383f5b0c4 100644
+--- a/net/bridge/br_multicast.c
++++ b/net/bridge/br_multicast.c
+@@ -980,7 +980,7 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge *br,
+
+ ih = igmpv3_report_hdr(skb);
+ num = ntohs(ih->ngrec);
+- len = sizeof(*ih);
++ len = skb_transport_offset(skb) + sizeof(*ih);
+
+ for (i = 0; i < num; i++) {
+ len += sizeof(*grec);
+@@ -1035,7 +1035,7 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br,
+
+ icmp6h = icmp6_hdr(skb);
+ num = ntohs(icmp6h->icmp6_dataun.un_data16[1]);
+- len = sizeof(*icmp6h);
++ len = skb_transport_offset(skb) + sizeof(*icmp6h);
+
+ for (i = 0; i < num; i++) {
+ __be16 *nsrcs, _nsrcs;
+diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
+index 9a12668f7d62..0ad144fb0c79 100644
+--- a/net/core/fib_rules.c
++++ b/net/core/fib_rules.c
+@@ -615,15 +615,17 @@ static int dump_rules(struct sk_buff *skb, struct netlink_callback *cb,
+ {
+ int idx = 0;
+ struct fib_rule *rule;
++ int err = 0;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(rule, &ops->rules_list, list) {
+ if (idx < cb->args[1])
+ goto skip;
+
+- if (fib_nl_fill_rule(skb, rule, NETLINK_CB(cb->skb).portid,
+- cb->nlh->nlmsg_seq, RTM_NEWRULE,
+- NLM_F_MULTI, ops) < 0)
++ err = fib_nl_fill_rule(skb, rule, NETLINK_CB(cb->skb).portid,
++ cb->nlh->nlmsg_seq, RTM_NEWRULE,
++ NLM_F_MULTI, ops);
++ if (err)
+ break;
+ skip:
+ idx++;
+@@ -632,7 +634,7 @@ skip:
+ cb->args[1] = idx;
+ rules_ops_put(ops);
+
+- return skb->len;
++ return err;
+ }
+
+ static int fib_nl_dumprule(struct sk_buff *skb, struct netlink_callback *cb)
+@@ -648,7 +650,9 @@ static int fib_nl_dumprule(struct sk_buff *skb, struct netlink_callback *cb)
+ if (ops == NULL)
+ return -EAFNOSUPPORT;
+
+- return dump_rules(skb, cb, ops);
++ dump_rules(skb, cb, ops);
++
++ return skb->len;
+ }
+
+ rcu_read_lock();
+diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c
+index 74dddf84adcd..556ecf96a385 100644
+--- a/net/core/sock_diag.c
++++ b/net/core/sock_diag.c
+@@ -86,6 +86,9 @@ int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
+ goto out;
+
+ fprog = filter->prog->orig_prog;
++ if (!fprog)
++ goto out;
++
+ flen = bpf_classic_proglen(fprog);
+
+ attr = nla_reserve(skb, attrtype, flen);
+diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
+index a369e8a70b2c..986440b24978 100644
+--- a/net/ipv4/tcp_output.c
++++ b/net/ipv4/tcp_output.c
+@@ -2893,6 +2893,7 @@ void tcp_send_active_reset(struct sock *sk, gfp_t priority)
+ skb_reserve(skb, MAX_TCP_HEADER);
+ tcp_init_nondata_skb(skb, tcp_acceptable_seq(sk),
+ TCPHDR_ACK | TCPHDR_RST);
++ skb_mstamp_get(&skb->skb_mstamp);
+ /* Send it off. */
+ if (tcp_transmit_skb(sk, skb, 0, priority))
+ NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPABORTFAILED);
+diff --git a/net/ipv6/exthdrs_offload.c b/net/ipv6/exthdrs_offload.c
+index 447a7fbd1bb6..f5e2ba1c18bf 100644
+--- a/net/ipv6/exthdrs_offload.c
++++ b/net/ipv6/exthdrs_offload.c
+@@ -36,6 +36,6 @@ out:
+ return ret;
+
+ out_rt:
+- inet_del_offload(&rthdr_offload, IPPROTO_ROUTING);
++ inet6_del_offload(&rthdr_offload, IPPROTO_ROUTING);
+ goto out;
+ }
+diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
+index a38d3ac0f18f..69f4f689f06a 100644
+--- a/net/ipv6/ip6_gre.c
++++ b/net/ipv6/ip6_gre.c
+@@ -361,6 +361,7 @@ static void ip6gre_tunnel_uninit(struct net_device *dev)
+ struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id);
+
+ ip6gre_tunnel_unlink(ign, t);
++ ip6_tnl_dst_reset(t);
+ dev_put(dev);
+ }
+
+diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
+index 74ceb73c1c9a..5f36266b1f5e 100644
+--- a/net/ipv6/ip6mr.c
++++ b/net/ipv6/ip6mr.c
+@@ -550,7 +550,7 @@ static void ipmr_mfc_seq_stop(struct seq_file *seq, void *v)
+
+ if (it->cache == &mrt->mfc6_unres_queue)
+ spin_unlock_bh(&mfc_unres_lock);
+- else if (it->cache == mrt->mfc6_cache_array)
++ else if (it->cache == &mrt->mfc6_cache_array[it->ct])
+ read_unlock(&mrt_lock);
+ }
+
+diff --git a/net/ipv6/route.c b/net/ipv6/route.c
+index c73ae5039e46..f371fefa7fdc 100644
+--- a/net/ipv6/route.c
++++ b/net/ipv6/route.c
+@@ -1515,7 +1515,7 @@ static int ip6_convert_metrics(struct mx6_config *mxc,
+ return -EINVAL;
+ }
+
+-int ip6_route_add(struct fib6_config *cfg)
++int ip6_route_info_create(struct fib6_config *cfg, struct rt6_info **rt_ret)
+ {
+ int err;
+ struct net *net = cfg->fc_nlinfo.nl_net;
+@@ -1523,7 +1523,6 @@ int ip6_route_add(struct fib6_config *cfg)
+ struct net_device *dev = NULL;
+ struct inet6_dev *idev = NULL;
+ struct fib6_table *table;
+- struct mx6_config mxc = { .mx = NULL, };
+ int addr_type;
+
+ if (cfg->fc_dst_len > 128 || cfg->fc_src_len > 128)
+@@ -1719,6 +1718,32 @@ install_route:
+
+ cfg->fc_nlinfo.nl_net = dev_net(dev);
+
++ *rt_ret = rt;
++
++ return 0;
++out:
++ if (dev)
++ dev_put(dev);
++ if (idev)
++ in6_dev_put(idev);
++ if (rt)
++ dst_free(&rt->dst);
++
++ *rt_ret = NULL;
++
++ return err;
++}
++
++int ip6_route_add(struct fib6_config *cfg)
++{
++ struct mx6_config mxc = { .mx = NULL, };
++ struct rt6_info *rt = NULL;
++ int err;
++
++ err = ip6_route_info_create(cfg, &rt);
++ if (err)
++ goto out;
++
+ err = ip6_convert_metrics(&mxc, cfg);
+ if (err)
+ goto out;
+@@ -1726,14 +1751,12 @@ install_route:
+ err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, &mxc);
+
+ kfree(mxc.mx);
++
+ return err;
+ out:
+- if (dev)
+- dev_put(dev);
+- if (idev)
+- in6_dev_put(idev);
+ if (rt)
+ dst_free(&rt->dst);
++
+ return err;
+ }
+
+@@ -2496,19 +2519,78 @@ errout:
+ return err;
+ }
+
+-static int ip6_route_multipath(struct fib6_config *cfg, int add)
++struct rt6_nh {
++ struct rt6_info *rt6_info;
++ struct fib6_config r_cfg;
++ struct mx6_config mxc;
++ struct list_head next;
++};
++
++static void ip6_print_replace_route_err(struct list_head *rt6_nh_list)
++{
++ struct rt6_nh *nh;
++
++ list_for_each_entry(nh, rt6_nh_list, next) {
++ pr_warn("IPV6: multipath route replace failed (check consistency of installed routes): %pI6 nexthop %pI6 ifi %d\n",
++ &nh->r_cfg.fc_dst, &nh->r_cfg.fc_gateway,
++ nh->r_cfg.fc_ifindex);
++ }
++}
++
++static int ip6_route_info_append(struct list_head *rt6_nh_list,
++ struct rt6_info *rt, struct fib6_config *r_cfg)
++{
++ struct rt6_nh *nh;
++ struct rt6_info *rtnh;
++ int err = -EEXIST;
++
++ list_for_each_entry(nh, rt6_nh_list, next) {
++ /* check if rt6_info already exists */
++ rtnh = nh->rt6_info;
++
++ if (rtnh->dst.dev == rt->dst.dev &&
++ rtnh->rt6i_idev == rt->rt6i_idev &&
++ ipv6_addr_equal(&rtnh->rt6i_gateway,
++ &rt->rt6i_gateway))
++ return err;
++ }
++
++ nh = kzalloc(sizeof(*nh), GFP_KERNEL);
++ if (!nh)
++ return -ENOMEM;
++ nh->rt6_info = rt;
++ err = ip6_convert_metrics(&nh->mxc, r_cfg);
++ if (err) {
++ kfree(nh);
++ return err;
++ }
++ memcpy(&nh->r_cfg, r_cfg, sizeof(*r_cfg));
++ list_add_tail(&nh->next, rt6_nh_list);
++
++ return 0;
++}
++
++static int ip6_route_multipath_add(struct fib6_config *cfg)
+ {
+ struct fib6_config r_cfg;
+ struct rtnexthop *rtnh;
++ struct rt6_info *rt;
++ struct rt6_nh *err_nh;
++ struct rt6_nh *nh, *nh_safe;
+ int remaining;
+ int attrlen;
+- int err = 0, last_err = 0;
++ int err = 1;
++ int nhn = 0;
++ int replace = (cfg->fc_nlinfo.nlh &&
++ (cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_REPLACE));
++ LIST_HEAD(rt6_nh_list);
+
+ remaining = cfg->fc_mp_len;
+-beginning:
+ rtnh = (struct rtnexthop *)cfg->fc_mp;
+
+- /* Parse a Multipath Entry */
++ /* Parse a Multipath Entry and build a list (rt6_nh_list) of
++ * rt6_info structs per nexthop
++ */
+ while (rtnh_ok(rtnh, remaining)) {
+ memcpy(&r_cfg, cfg, sizeof(*cfg));
+ if (rtnh->rtnh_ifindex)
+@@ -2524,22 +2606,32 @@ beginning:
+ r_cfg.fc_flags |= RTF_GATEWAY;
+ }
+ }
+- err = add ? ip6_route_add(&r_cfg) : ip6_route_del(&r_cfg);
++
++ err = ip6_route_info_create(&r_cfg, &rt);
++ if (err)
++ goto cleanup;
++
++ err = ip6_route_info_append(&rt6_nh_list, rt, &r_cfg);
+ if (err) {
+- last_err = err;
+- /* If we are trying to remove a route, do not stop the
+- * loop when ip6_route_del() fails (because next hop is
+- * already gone), we should try to remove all next hops.
+- */
+- if (add) {
+- /* If add fails, we should try to delete all
+- * next hops that have been already added.
+- */
+- add = 0;
+- remaining = cfg->fc_mp_len - remaining;
+- goto beginning;
+- }
++ dst_free(&rt->dst);
++ goto cleanup;
++ }
++
++ rtnh = rtnh_next(rtnh, &remaining);
++ }
++
++ err_nh = NULL;
++ list_for_each_entry(nh, &rt6_nh_list, next) {
++ err = __ip6_ins_rt(nh->rt6_info, &cfg->fc_nlinfo, &nh->mxc);
++ /* nh->rt6_info is used or freed at this point, reset to NULL*/
++ nh->rt6_info = NULL;
++ if (err) {
++ if (replace && nhn)
++ ip6_print_replace_route_err(&rt6_nh_list);
++ err_nh = nh;
++ goto add_errout;
+ }
++
+ /* Because each route is added like a single route we remove
+ * these flags after the first nexthop: if there is a collision,
+ * we have already failed to add the first nexthop:
+@@ -2549,6 +2641,63 @@ beginning:
+ */
+ cfg->fc_nlinfo.nlh->nlmsg_flags &= ~(NLM_F_EXCL |
+ NLM_F_REPLACE);
++ nhn++;
++ }
++
++ goto cleanup;
++
++add_errout:
++ /* Delete routes that were already added */
++ list_for_each_entry(nh, &rt6_nh_list, next) {
++ if (err_nh == nh)
++ break;
++ ip6_route_del(&nh->r_cfg);
++ }
++
++cleanup:
++ list_for_each_entry_safe(nh, nh_safe, &rt6_nh_list, next) {
++ if (nh->rt6_info)
++ dst_free(&nh->rt6_info->dst);
++ if (nh->mxc.mx)
++ kfree(nh->mxc.mx);
++ list_del(&nh->next);
++ kfree(nh);
++ }
++
++ return err;
++}
++
++static int ip6_route_multipath_del(struct fib6_config *cfg)
++{
++ struct fib6_config r_cfg;
++ struct rtnexthop *rtnh;
++ int remaining;
++ int attrlen;
++ int err = 1, last_err = 0;
++
++ remaining = cfg->fc_mp_len;
++ rtnh = (struct rtnexthop *)cfg->fc_mp;
++
++ /* Parse a Multipath Entry */
++ while (rtnh_ok(rtnh, remaining)) {
++ memcpy(&r_cfg, cfg, sizeof(*cfg));
++ if (rtnh->rtnh_ifindex)
++ r_cfg.fc_ifindex = rtnh->rtnh_ifindex;
++
++ attrlen = rtnh_attrlen(rtnh);
++ if (attrlen > 0) {
++ struct nlattr *nla, *attrs = rtnh_attrs(rtnh);
++
++ nla = nla_find(attrs, attrlen, RTA_GATEWAY);
++ if (nla) {
++ nla_memcpy(&r_cfg.fc_gateway, nla, 16);
++ r_cfg.fc_flags |= RTF_GATEWAY;
++ }
++ }
++ err = ip6_route_del(&r_cfg);
++ if (err)
++ last_err = err;
++
+ rtnh = rtnh_next(rtnh, &remaining);
+ }
+
+@@ -2565,7 +2714,7 @@ static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh)
+ return err;
+
+ if (cfg.fc_mp)
+- return ip6_route_multipath(&cfg, 0);
++ return ip6_route_multipath_del(&cfg);
+ else
+ return ip6_route_del(&cfg);
+ }
+@@ -2580,7 +2729,7 @@ static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh)
+ return err;
+
+ if (cfg.fc_mp)
+- return ip6_route_multipath(&cfg, 1);
++ return ip6_route_multipath_add(&cfg);
+ else
+ return ip6_route_add(&cfg);
+ }
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index 4856d975492d..980121e75d2e 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -123,6 +123,24 @@ static inline u32 netlink_group_mask(u32 group)
+ return group ? 1 << (group - 1) : 0;
+ }
+
++static struct sk_buff *netlink_to_full_skb(const struct sk_buff *skb,
++ gfp_t gfp_mask)
++{
++ unsigned int len = skb_end_offset(skb);
++ struct sk_buff *new;
++
++ new = alloc_skb(len, gfp_mask);
++ if (new == NULL)
++ return NULL;
++
++ NETLINK_CB(new).portid = NETLINK_CB(skb).portid;
++ NETLINK_CB(new).dst_group = NETLINK_CB(skb).dst_group;
++ NETLINK_CB(new).creds = NETLINK_CB(skb).creds;
++
++ memcpy(skb_put(new, len), skb->data, len);
++ return new;
++}
++
+ int netlink_add_tap(struct netlink_tap *nt)
+ {
+ if (unlikely(nt->dev->type != ARPHRD_NETLINK))
+@@ -204,7 +222,11 @@ static int __netlink_deliver_tap_skb(struct sk_buff *skb,
+ int ret = -ENOMEM;
+
+ dev_hold(dev);
+- nskb = skb_clone(skb, GFP_ATOMIC);
++
++ if (netlink_skb_is_mmaped(skb) || is_vmalloc_addr(skb->head))
++ nskb = netlink_to_full_skb(skb, GFP_ATOMIC);
++ else
++ nskb = skb_clone(skb, GFP_ATOMIC);
+ if (nskb) {
+ nskb->dev = dev;
+ nskb->protocol = htons((u16) sk->sk_protocol);
+@@ -276,11 +298,6 @@ static void netlink_rcv_wake(struct sock *sk)
+ }
+
+ #ifdef CONFIG_NETLINK_MMAP
+-static bool netlink_skb_is_mmaped(const struct sk_buff *skb)
+-{
+- return NETLINK_CB(skb).flags & NETLINK_SKB_MMAPED;
+-}
+-
+ static bool netlink_rx_is_mmaped(struct sock *sk)
+ {
+ return nlk_sk(sk)->rx_ring.pg_vec != NULL;
+@@ -832,7 +849,6 @@ static void netlink_ring_set_copied(struct sock *sk, struct sk_buff *skb)
+ }
+
+ #else /* CONFIG_NETLINK_MMAP */
+-#define netlink_skb_is_mmaped(skb) false
+ #define netlink_rx_is_mmaped(sk) false
+ #define netlink_tx_is_mmaped(sk) false
+ #define netlink_mmap sock_no_mmap
+@@ -1080,8 +1096,8 @@ static int netlink_insert(struct sock *sk, u32 portid)
+
+ lock_sock(sk);
+
+- err = -EBUSY;
+- if (nlk_sk(sk)->portid)
++ err = nlk_sk(sk)->portid == portid ? 0 : -EBUSY;
++ if (nlk_sk(sk)->bound)
+ goto err;
+
+ err = -ENOMEM;
+@@ -1101,10 +1117,13 @@ static int netlink_insert(struct sock *sk, u32 portid)
+ err = -EOVERFLOW;
+ if (err == -EEXIST)
+ err = -EADDRINUSE;
+- nlk_sk(sk)->portid = 0;
+ sock_put(sk);
+ }
+
++ /* We need to ensure that the socket is hashed and visible. */
++ smp_wmb();
++ nlk_sk(sk)->bound = portid;
++
+ err:
+ release_sock(sk);
+ return err;
+@@ -1484,6 +1503,7 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr,
+ struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr;
+ int err;
+ long unsigned int groups = nladdr->nl_groups;
++ bool bound;
+
+ if (addr_len < sizeof(struct sockaddr_nl))
+ return -EINVAL;
+@@ -1500,9 +1520,14 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr,
+ return err;
+ }
+
+- if (nlk->portid)
++ bound = nlk->bound;
++ if (bound) {
++ /* Ensure nlk->portid is up-to-date. */
++ smp_rmb();
++
+ if (nladdr->nl_pid != nlk->portid)
+ return -EINVAL;
++ }
+
+ if (nlk->netlink_bind && groups) {
+ int group;
+@@ -1518,7 +1543,10 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr,
+ }
+ }
+
+- if (!nlk->portid) {
++ /* No need for barriers here as we return to user-space without
++ * using any of the bound attributes.
++ */
++ if (!bound) {
+ err = nladdr->nl_pid ?
+ netlink_insert(sk, nladdr->nl_pid) :
+ netlink_autobind(sock);
+@@ -1566,7 +1594,10 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
+ !netlink_allowed(sock, NL_CFG_F_NONROOT_SEND))
+ return -EPERM;
+
+- if (!nlk->portid)
++ /* No need for barriers here as we return to user-space without
++ * using any of the bound attributes.
++ */
++ if (!nlk->bound)
+ err = netlink_autobind(sock);
+
+ if (err == 0) {
+@@ -2323,10 +2354,13 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
+ dst_group = nlk->dst_group;
+ }
+
+- if (!nlk->portid) {
++ if (!nlk->bound) {
+ err = netlink_autobind(sock);
+ if (err)
+ goto out;
++ } else {
++ /* Ensure nlk is hashed and visible. */
++ smp_rmb();
+ }
+
+ /* It's a really convoluted way for userland to ask for mmaped
+diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h
+index 89008405d6b4..14437d9b1965 100644
+--- a/net/netlink/af_netlink.h
++++ b/net/netlink/af_netlink.h
+@@ -35,6 +35,7 @@ struct netlink_sock {
+ unsigned long state;
+ size_t max_recvmsg_len;
+ wait_queue_head_t wait;
++ bool bound;
+ bool cb_running;
+ struct netlink_callback cb;
+ struct mutex *cb_mutex;
+@@ -59,6 +60,15 @@ static inline struct netlink_sock *nlk_sk(struct sock *sk)
+ return container_of(sk, struct netlink_sock, sk);
+ }
+
++static inline bool netlink_skb_is_mmaped(const struct sk_buff *skb)
++{
++#ifdef CONFIG_NETLINK_MMAP
++ return NETLINK_CB(skb).flags & NETLINK_SKB_MMAPED;
++#else
++ return false;
++#endif /* CONFIG_NETLINK_MMAP */
++}
++
+ struct netlink_table {
+ struct rhashtable hash;
+ struct hlist_head mc_list;
+diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
+index 096c6276e6b9..27e14962b504 100644
+--- a/net/openvswitch/datapath.c
++++ b/net/openvswitch/datapath.c
+@@ -906,7 +906,7 @@ static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info)
+ if (error)
+ goto err_kfree_flow;
+
+- ovs_flow_mask_key(&new_flow->key, &key, &mask);
++ ovs_flow_mask_key(&new_flow->key, &key, true, &mask);
+
+ /* Extract flow identifier. */
+ error = ovs_nla_get_identifier(&new_flow->id, a[OVS_FLOW_ATTR_UFID],
+@@ -1033,7 +1033,7 @@ static struct sw_flow_actions *get_flow_actions(const struct nlattr *a,
+ struct sw_flow_key masked_key;
+ int error;
+
+- ovs_flow_mask_key(&masked_key, key, mask);
++ ovs_flow_mask_key(&masked_key, key, true, mask);
+ error = ovs_nla_copy_actions(a, &masked_key, &acts, log);
+ if (error) {
+ OVS_NLERR(log,
+diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
+index 4613df8c8290..aa349514e4cb 100644
+--- a/net/openvswitch/flow_table.c
++++ b/net/openvswitch/flow_table.c
+@@ -56,20 +56,21 @@ static u16 range_n_bytes(const struct sw_flow_key_range *range)
+ }
+
+ void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
+- const struct sw_flow_mask *mask)
++ bool full, const struct sw_flow_mask *mask)
+ {
+- const long *m = (const long *)((const u8 *)&mask->key +
+- mask->range.start);
+- const long *s = (const long *)((const u8 *)src +
+- mask->range.start);
+- long *d = (long *)((u8 *)dst + mask->range.start);
++ int start = full ? 0 : mask->range.start;
++ int len = full ? sizeof *dst : range_n_bytes(&mask->range);
++ const long *m = (const long *)((const u8 *)&mask->key + start);
++ const long *s = (const long *)((const u8 *)src + start);
++ long *d = (long *)((u8 *)dst + start);
+ int i;
+
+- /* The memory outside of the 'mask->range' are not set since
+- * further operations on 'dst' only uses contents within
+- * 'mask->range'.
++ /* If 'full' is true then all of 'dst' is fully initialized. Otherwise,
++ * if 'full' is false the memory outside of the 'mask->range' is left
++ * uninitialized. This can be used as an optimization when further
++ * operations on 'dst' only use contents within 'mask->range'.
+ */
+- for (i = 0; i < range_n_bytes(&mask->range); i += sizeof(long))
++ for (i = 0; i < len; i += sizeof(long))
+ *d++ = *s++ & *m++;
+ }
+
+@@ -473,7 +474,7 @@ static struct sw_flow *masked_flow_lookup(struct table_instance *ti,
+ u32 hash;
+ struct sw_flow_key masked_key;
+
+- ovs_flow_mask_key(&masked_key, unmasked, mask);
++ ovs_flow_mask_key(&masked_key, unmasked, false, mask);
+ hash = flow_hash(&masked_key, &mask->range);
+ head = find_bucket(ti, hash);
+ hlist_for_each_entry_rcu(flow, head, flow_table.node[ti->node_ver]) {
+diff --git a/net/openvswitch/flow_table.h b/net/openvswitch/flow_table.h
+index 616eda10d955..2dd9900f533d 100644
+--- a/net/openvswitch/flow_table.h
++++ b/net/openvswitch/flow_table.h
+@@ -86,5 +86,5 @@ struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *,
+ bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *);
+
+ void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
+- const struct sw_flow_mask *mask);
++ bool full, const struct sw_flow_mask *mask);
+ #endif /* flow_table.h */
+diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
+index 715e01e5910a..f23a3b68bba6 100644
+--- a/net/sched/cls_fw.c
++++ b/net/sched/cls_fw.c
+@@ -33,7 +33,6 @@
+
+ struct fw_head {
+ u32 mask;
+- bool mask_set;
+ struct fw_filter __rcu *ht[HTSIZE];
+ struct rcu_head rcu;
+ };
+@@ -84,7 +83,7 @@ static int fw_classify(struct sk_buff *skb, const struct tcf_proto *tp,
+ }
+ }
+ } else {
+- /* old method */
++ /* Old method: classify the packet using its skb mark. */
+ if (id && (TC_H_MAJ(id) == 0 ||
+ !(TC_H_MAJ(id ^ tp->q->handle)))) {
+ res->classid = id;
+@@ -114,14 +113,9 @@ static unsigned long fw_get(struct tcf_proto *tp, u32 handle)
+
+ static int fw_init(struct tcf_proto *tp)
+ {
+- struct fw_head *head;
+-
+- head = kzalloc(sizeof(struct fw_head), GFP_KERNEL);
+- if (head == NULL)
+- return -ENOBUFS;
+-
+- head->mask_set = false;
+- rcu_assign_pointer(tp->root, head);
++ /* We don't allocate fw_head here, because in the old method
++ * we don't need it at all.
++ */
+ return 0;
+ }
+
+@@ -252,7 +246,7 @@ static int fw_change(struct net *net, struct sk_buff *in_skb,
+ int err;
+
+ if (!opt)
+- return handle ? -EINVAL : 0;
++ return handle ? -EINVAL : 0; /* Succeed if it is old method. */
+
+ err = nla_parse_nested(tb, TCA_FW_MAX, opt, fw_policy);
+ if (err < 0)
+@@ -302,11 +296,17 @@ static int fw_change(struct net *net, struct sk_buff *in_skb,
+ if (!handle)
+ return -EINVAL;
+
+- if (!head->mask_set) {
+- head->mask = 0xFFFFFFFF;
++ if (!head) {
++ u32 mask = 0xFFFFFFFF;
+ if (tb[TCA_FW_MASK])
+- head->mask = nla_get_u32(tb[TCA_FW_MASK]);
+- head->mask_set = true;
++ mask = nla_get_u32(tb[TCA_FW_MASK]);
++
++ head = kzalloc(sizeof(*head), GFP_KERNEL);
++ if (!head)
++ return -ENOBUFS;
++ head->mask = mask;
++
++ rcu_assign_pointer(tp->root, head);
+ }
+
+ f = kzalloc(sizeof(struct fw_filter), GFP_KERNEL);
+diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
+index cab9e9b43967..4fbb67430ce4 100644
+--- a/net/sched/cls_u32.c
++++ b/net/sched/cls_u32.c
+@@ -490,6 +490,19 @@ static bool u32_destroy(struct tcf_proto *tp, bool force)
+ return false;
+ }
+ }
++
++ if (tp_c->refcnt > 1)
++ return false;
++
++ if (tp_c->refcnt == 1) {
++ struct tc_u_hnode *ht;
++
++ for (ht = rtnl_dereference(tp_c->hlist);
++ ht;
++ ht = rtnl_dereference(ht->next))
++ if (!ht_empty(ht))
++ return false;
++ }
+ }
+
+ if (root_ht && --root_ht->refcnt == 0)
+diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
+index 53b7acde9aa3..e13c3c3ea4ac 100644
+--- a/net/sctp/protocol.c
++++ b/net/sctp/protocol.c
+@@ -1166,7 +1166,7 @@ static void sctp_v4_del_protocol(void)
+ unregister_inetaddr_notifier(&sctp_inetaddr_notifier);
+ }
+
+-static int __net_init sctp_net_init(struct net *net)
++static int __net_init sctp_defaults_init(struct net *net)
+ {
+ int status;
+
+@@ -1259,12 +1259,6 @@ static int __net_init sctp_net_init(struct net *net)
+
+ sctp_dbg_objcnt_init(net);
+
+- /* Initialize the control inode/socket for handling OOTB packets. */
+- if ((status = sctp_ctl_sock_init(net))) {
+- pr_err("Failed to initialize the SCTP control sock\n");
+- goto err_ctl_sock_init;
+- }
+-
+ /* Initialize the local address list. */
+ INIT_LIST_HEAD(&net->sctp.local_addr_list);
+ spin_lock_init(&net->sctp.local_addr_lock);
+@@ -1280,9 +1274,6 @@ static int __net_init sctp_net_init(struct net *net)
+
+ return 0;
+
+-err_ctl_sock_init:
+- sctp_dbg_objcnt_exit(net);
+- sctp_proc_exit(net);
+ err_init_proc:
+ cleanup_sctp_mibs(net);
+ err_init_mibs:
+@@ -1291,15 +1282,12 @@ err_sysctl_register:
+ return status;
+ }
+
+-static void __net_exit sctp_net_exit(struct net *net)
++static void __net_exit sctp_defaults_exit(struct net *net)
+ {
+ /* Free the local address list */
+ sctp_free_addr_wq(net);
+ sctp_free_local_addr_list(net);
+
+- /* Free the control endpoint. */
+- inet_ctl_sock_destroy(net->sctp.ctl_sock);
+-
+ sctp_dbg_objcnt_exit(net);
+
+ sctp_proc_exit(net);
+@@ -1307,9 +1295,32 @@ static void __net_exit sctp_net_exit(struct net *net)
+ sctp_sysctl_net_unregister(net);
+ }
+
+-static struct pernet_operations sctp_net_ops = {
+- .init = sctp_net_init,
+- .exit = sctp_net_exit,
++static struct pernet_operations sctp_defaults_ops = {
++ .init = sctp_defaults_init,
++ .exit = sctp_defaults_exit,
++};
++
++static int __net_init sctp_ctrlsock_init(struct net *net)
++{
++ int status;
++
++ /* Initialize the control inode/socket for handling OOTB packets. */
++ status = sctp_ctl_sock_init(net);
++ if (status)
++ pr_err("Failed to initialize the SCTP control sock\n");
++
++ return status;
++}
++
++static void __net_init sctp_ctrlsock_exit(struct net *net)
++{
++ /* Free the control endpoint. */
++ inet_ctl_sock_destroy(net->sctp.ctl_sock);
++}
++
++static struct pernet_operations sctp_ctrlsock_ops = {
++ .init = sctp_ctrlsock_init,
++ .exit = sctp_ctrlsock_exit,
+ };
+
+ /* Initialize the universe into something sensible. */
+@@ -1442,8 +1453,11 @@ static __init int sctp_init(void)
+ sctp_v4_pf_init();
+ sctp_v6_pf_init();
+
+- status = sctp_v4_protosw_init();
++ status = register_pernet_subsys(&sctp_defaults_ops);
++ if (status)
++ goto err_register_defaults;
+
++ status = sctp_v4_protosw_init();
+ if (status)
+ goto err_protosw_init;
+
+@@ -1451,9 +1465,9 @@ static __init int sctp_init(void)
+ if (status)
+ goto err_v6_protosw_init;
+
+- status = register_pernet_subsys(&sctp_net_ops);
++ status = register_pernet_subsys(&sctp_ctrlsock_ops);
+ if (status)
+- goto err_register_pernet_subsys;
++ goto err_register_ctrlsock;
+
+ status = sctp_v4_add_protocol();
+ if (status)
+@@ -1469,12 +1483,14 @@ out:
+ err_v6_add_protocol:
+ sctp_v4_del_protocol();
+ err_add_protocol:
+- unregister_pernet_subsys(&sctp_net_ops);
+-err_register_pernet_subsys:
++ unregister_pernet_subsys(&sctp_ctrlsock_ops);
++err_register_ctrlsock:
+ sctp_v6_protosw_exit();
+ err_v6_protosw_init:
+ sctp_v4_protosw_exit();
+ err_protosw_init:
++ unregister_pernet_subsys(&sctp_defaults_ops);
++err_register_defaults:
+ sctp_v4_pf_exit();
+ sctp_v6_pf_exit();
+ sctp_sysctl_unregister();
+@@ -1507,12 +1523,14 @@ static __exit void sctp_exit(void)
+ sctp_v6_del_protocol();
+ sctp_v4_del_protocol();
+
+- unregister_pernet_subsys(&sctp_net_ops);
++ unregister_pernet_subsys(&sctp_ctrlsock_ops);
+
+ /* Free protosw registrations */
+ sctp_v6_protosw_exit();
+ sctp_v4_protosw_exit();
+
++ unregister_pernet_subsys(&sctp_defaults_ops);
++
+ /* Unregister with socket layer. */
+ sctp_v6_pf_exit();
+ sctp_v4_pf_exit();
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-10-02 12:08 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-10-02 12:08 UTC (permalink / raw
To: gentoo-commits
commit: cb0333eb392976ebff5a7d56008620f7c0862790
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Oct 2 12:08:15 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Oct 2 12:08:15 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=cb0333eb
inet: Patch to fix potential deadlock in reqsk_queue_unlink()
0000_README | 4 +++
2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch | 32 ++++++++++++++++++++++
2 files changed, 36 insertions(+)
diff --git a/0000_README b/0000_README
index 46b8cb0..348e8f5 100644
--- a/0000_README
+++ b/0000_README
@@ -91,6 +91,10 @@ Patch: 1600_dm-crypt-limit-max-segment-size.patch
From: https://bugzilla.kernel.org/show_bug.cgi?id=104421
Desc: dm crypt: constrain crypt device's max_segment_size to PAGE_SIZE.
+Patch: 2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch
+From: http://git.kernel.org/
+Desc: inet: Patch to fix potential deadlock in reqsk_queue_unlink()
+
Patch: 2700_ThinkPad-30-brightness-control-fix.patch
From: Seth Forshee <seth.forshee@canonical.com>
Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
diff --git a/2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch b/2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch
new file mode 100644
index 0000000..890f5e5
--- /dev/null
+++ b/2000_inet-deadlock-in-reqsk-queue-unlink-fix.patch
@@ -0,0 +1,32 @@
+From 83fccfc3940c4a2db90fd7e7079f5b465cd8c6af Mon Sep 17 00:00:00 2001
+From: Eric Dumazet <edumazet@google.com>
+Date: Thu, 13 Aug 2015 15:44:51 -0700
+Subject: inet: fix potential deadlock in reqsk_queue_unlink()
+
+When replacing del_timer() with del_timer_sync(), I introduced
+a deadlock condition :
+
+reqsk_queue_unlink() is called from inet_csk_reqsk_queue_drop()
+
+inet_csk_reqsk_queue_drop() can be called from many contexts,
+one being the timer handler itself (reqsk_timer_handler()).
+
+In this case, del_timer_sync() loops forever.
+
+Simple fix is to test if timer is pending.
+
+Fixes: 2235f2ac75fd ("inet: fix races with reqsk timers")
+Signed-off-by: Eric Dumazet <edumazet@google.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+
+--- a/net/ipv4/inet_connection_sock.c 2015-10-02 07:49:42.759957268 -0400
++++ b/net/ipv4/inet_connection_sock.c 2015-10-02 07:50:12.929957111 -0400
+@@ -584,7 +584,7 @@ static bool reqsk_queue_unlink(struct re
+ }
+
+ spin_unlock(&queue->syn_wait_lock);
+- if (del_timer_sync(&req->rsk_timer))
++ if (timer_pending(&req->rsk_timer) && del_timer_sync(&req->rsk_timer))
+ reqsk_put(req);
+ return found;
+ }
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-09-29 17:50 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-09-29 17:50 UTC (permalink / raw
To: gentoo-commits
commit: a246795e14884680031e6838755d88dfa0ce1790
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Sep 29 17:50:31 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Sep 29 17:50:31 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=a246795e
Linux patch 4.1.9
0000_README | 4 +
1008_linux-4.1.9.patch | 5955 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 5959 insertions(+)
diff --git a/0000_README b/0000_README
index 4a96d2e..46b8cb0 100644
--- a/0000_README
+++ b/0000_README
@@ -75,6 +75,10 @@ Patch: 1007_linux-4.1.8.patch
From: http://www.kernel.org
Desc: Linux 4.1.8
+Patch: 1008_linux-4.1.9.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.9
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1008_linux-4.1.9.patch b/1008_linux-4.1.9.patch
new file mode 100644
index 0000000..000c373
--- /dev/null
+++ b/1008_linux-4.1.9.patch
@@ -0,0 +1,5955 @@
+diff --git a/Makefile b/Makefile
+index dbf3baa5fabb..e071176b2ce6 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 8
++SUBLEVEL = 9
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c
+index bd245d34952d..a0765e7ed6c7 100644
+--- a/arch/arm/boot/compressed/decompress.c
++++ b/arch/arm/boot/compressed/decompress.c
+@@ -57,5 +57,5 @@ extern char * strstr(const char * s1, const char *s2);
+
+ int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x))
+ {
+- return decompress(input, len, NULL, NULL, output, NULL, error);
++ return __decompress(input, len, NULL, NULL, output, 0, NULL, error);
+ }
+diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
+index d9631ecddd56..d6223cbcb661 100644
+--- a/arch/arm/kvm/arm.c
++++ b/arch/arm/kvm/arm.c
+@@ -450,7 +450,7 @@ static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu)
+ * Map the VGIC hardware resources before running a vcpu the first
+ * time on this VM.
+ */
+- if (unlikely(!vgic_ready(kvm))) {
++ if (unlikely(irqchip_in_kernel(kvm) && !vgic_ready(kvm))) {
+ ret = kvm_vgic_map_resources(kvm);
+ if (ret)
+ return ret;
+diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
+index 7796af4b1d6f..6f0a3b41b009 100644
+--- a/arch/arm64/Kconfig
++++ b/arch/arm64/Kconfig
+@@ -101,6 +101,10 @@ config NO_IOPORT_MAP
+ config STACKTRACE_SUPPORT
+ def_bool y
+
++config ILLEGAL_POINTER_VALUE
++ hex
++ default 0xdead000000000000
++
+ config LOCKDEP_SUPPORT
+ def_bool y
+
+@@ -409,6 +413,22 @@ config ARM64_ERRATUM_845719
+
+ If unsure, say Y.
+
++config ARM64_ERRATUM_843419
++ bool "Cortex-A53: 843419: A load or store might access an incorrect address"
++ depends on MODULES
++ default y
++ help
++ This option builds kernel modules using the large memory model in
++ order to avoid the use of the ADRP instruction, which can cause
++ a subsequent memory access to use an incorrect address on Cortex-A53
++ parts up to r0p4.
++
++ Note that the kernel itself must be linked with a version of ld
++ which fixes potentially affected ADRP instructions through the
++ use of veneers.
++
++ If unsure, say Y.
++
+ endmenu
+
+
+diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
+index 4d2a925998f9..81151663ef38 100644
+--- a/arch/arm64/Makefile
++++ b/arch/arm64/Makefile
+@@ -30,6 +30,10 @@ endif
+
+ CHECKFLAGS += -D__aarch64__
+
++ifeq ($(CONFIG_ARM64_ERRATUM_843419), y)
++CFLAGS_MODULE += -mcmodel=large
++endif
++
+ # Default value
+ head-y := arch/arm64/kernel/head.o
+
+diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
+index f800d45ea226..44a59c20e773 100644
+--- a/arch/arm64/include/asm/memory.h
++++ b/arch/arm64/include/asm/memory.h
+@@ -114,6 +114,14 @@ extern phys_addr_t memstart_addr;
+ #define PHYS_OFFSET ({ memstart_addr; })
+
+ /*
++ * The maximum physical address that the linear direct mapping
++ * of system RAM can cover. (PAGE_OFFSET can be interpreted as
++ * a 2's complement signed quantity and negated to derive the
++ * maximum size of the linear mapping.)
++ */
++#define MAX_MEMBLOCK_ADDR ({ memstart_addr - PAGE_OFFSET - 1; })
++
++/*
+ * PFNs are used to describe any physical page; this means
+ * PFN 0 == physical address 0.
+ *
+diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
+index 3dca15634e69..c31e59fe2cb8 100644
+--- a/arch/arm64/kernel/fpsimd.c
++++ b/arch/arm64/kernel/fpsimd.c
+@@ -157,6 +157,7 @@ void fpsimd_thread_switch(struct task_struct *next)
+ void fpsimd_flush_thread(void)
+ {
+ memset(¤t->thread.fpsimd_state, 0, sizeof(struct fpsimd_state));
++ fpsimd_flush_task_state(current);
+ set_thread_flag(TIF_FOREIGN_FPSTATE);
+ }
+
+diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
+index 19f915e8f6e0..36aa31ff2c06 100644
+--- a/arch/arm64/kernel/head.S
++++ b/arch/arm64/kernel/head.S
+@@ -565,6 +565,11 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems
+ msr hstr_el2, xzr // Disable CP15 traps to EL2
+ #endif
+
++ /* EL2 debug */
++ mrs x0, pmcr_el0 // Disable debug access traps
++ ubfx x0, x0, #11, #5 // to EL2 and allow access to
++ msr mdcr_el2, x0 // all PMU counters from EL1
++
+ /* Stage-2 translation */
+ msr vttbr_el2, xzr
+
+diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c
+index 67bf4107f6ef..876eb8df50bf 100644
+--- a/arch/arm64/kernel/module.c
++++ b/arch/arm64/kernel/module.c
+@@ -332,12 +332,14 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
+ ovf = reloc_insn_imm(RELOC_OP_PREL, loc, val, 0, 21,
+ AARCH64_INSN_IMM_ADR);
+ break;
++#ifndef CONFIG_ARM64_ERRATUM_843419
+ case R_AARCH64_ADR_PREL_PG_HI21_NC:
+ overflow_check = false;
+ case R_AARCH64_ADR_PREL_PG_HI21:
+ ovf = reloc_insn_imm(RELOC_OP_PAGE, loc, val, 12, 21,
+ AARCH64_INSN_IMM_ADR);
+ break;
++#endif
+ case R_AARCH64_ADD_ABS_LO12_NC:
+ case R_AARCH64_LDST8_ABS_LO12_NC:
+ overflow_check = false;
+diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
+index c0cff3410166..c58aee062590 100644
+--- a/arch/arm64/kernel/signal32.c
++++ b/arch/arm64/kernel/signal32.c
+@@ -212,14 +212,32 @@ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
+
+ /*
+ * VFP save/restore code.
++ *
++ * We have to be careful with endianness, since the fpsimd context-switch
++ * code operates on 128-bit (Q) register values whereas the compat ABI
++ * uses an array of 64-bit (D) registers. Consequently, we need to swap
++ * the two halves of each Q register when running on a big-endian CPU.
+ */
++union __fpsimd_vreg {
++ __uint128_t raw;
++ struct {
++#ifdef __AARCH64EB__
++ u64 hi;
++ u64 lo;
++#else
++ u64 lo;
++ u64 hi;
++#endif
++ };
++};
++
+ static int compat_preserve_vfp_context(struct compat_vfp_sigframe __user *frame)
+ {
+ struct fpsimd_state *fpsimd = ¤t->thread.fpsimd_state;
+ compat_ulong_t magic = VFP_MAGIC;
+ compat_ulong_t size = VFP_STORAGE_SIZE;
+ compat_ulong_t fpscr, fpexc;
+- int err = 0;
++ int i, err = 0;
+
+ /*
+ * Save the hardware registers to the fpsimd_state structure.
+@@ -235,10 +253,15 @@ static int compat_preserve_vfp_context(struct compat_vfp_sigframe __user *frame)
+ /*
+ * Now copy the FP registers. Since the registers are packed,
+ * we can copy the prefix we want (V0-V15) as it is.
+- * FIXME: Won't work if big endian.
+ */
+- err |= __copy_to_user(&frame->ufp.fpregs, fpsimd->vregs,
+- sizeof(frame->ufp.fpregs));
++ for (i = 0; i < ARRAY_SIZE(frame->ufp.fpregs); i += 2) {
++ union __fpsimd_vreg vreg = {
++ .raw = fpsimd->vregs[i >> 1],
++ };
++
++ __put_user_error(vreg.lo, &frame->ufp.fpregs[i], err);
++ __put_user_error(vreg.hi, &frame->ufp.fpregs[i + 1], err);
++ }
+
+ /* Create an AArch32 fpscr from the fpsr and the fpcr. */
+ fpscr = (fpsimd->fpsr & VFP_FPSCR_STAT_MASK) |
+@@ -263,7 +286,7 @@ static int compat_restore_vfp_context(struct compat_vfp_sigframe __user *frame)
+ compat_ulong_t magic = VFP_MAGIC;
+ compat_ulong_t size = VFP_STORAGE_SIZE;
+ compat_ulong_t fpscr;
+- int err = 0;
++ int i, err = 0;
+
+ __get_user_error(magic, &frame->magic, err);
+ __get_user_error(size, &frame->size, err);
+@@ -273,12 +296,14 @@ static int compat_restore_vfp_context(struct compat_vfp_sigframe __user *frame)
+ if (magic != VFP_MAGIC || size != VFP_STORAGE_SIZE)
+ return -EINVAL;
+
+- /*
+- * Copy the FP registers into the start of the fpsimd_state.
+- * FIXME: Won't work if big endian.
+- */
+- err |= __copy_from_user(fpsimd.vregs, frame->ufp.fpregs,
+- sizeof(frame->ufp.fpregs));
++ /* Copy the FP registers into the start of the fpsimd_state. */
++ for (i = 0; i < ARRAY_SIZE(frame->ufp.fpregs); i += 2) {
++ union __fpsimd_vreg vreg;
++
++ __get_user_error(vreg.lo, &frame->ufp.fpregs[i], err);
++ __get_user_error(vreg.hi, &frame->ufp.fpregs[i + 1], err);
++ fpsimd.vregs[i >> 1] = vreg.raw;
++ }
+
+ /* Extract the fpsr and the fpcr from the fpscr */
+ __get_user_error(fpscr, &frame->ufp.fpscr, err);
+diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S
+index 5befd010e232..64f9e60b31da 100644
+--- a/arch/arm64/kvm/hyp.S
++++ b/arch/arm64/kvm/hyp.S
+@@ -844,8 +844,6 @@
+ mrs x3, cntv_ctl_el0
+ and x3, x3, #3
+ str w3, [x0, #VCPU_TIMER_CNTV_CTL]
+- bic x3, x3, #1 // Clear Enable
+- msr cntv_ctl_el0, x3
+
+ isb
+
+@@ -853,6 +851,9 @@
+ str x3, [x0, #VCPU_TIMER_CNTV_CVAL]
+
+ 1:
++ // Disable the virtual timer
++ msr cntv_ctl_el0, xzr
++
+ // Allow physical timer/counter access for the host
+ mrs x2, cnthctl_el2
+ orr x2, x2, #3
+@@ -947,13 +948,15 @@ ENTRY(__kvm_vcpu_run)
+ // Guest context
+ add x2, x0, #VCPU_CONTEXT
+
++ // We must restore the 32-bit state before the sysregs, thanks
++ // to Cortex-A57 erratum #852523.
++ restore_guest_32bit_state
+ bl __restore_sysregs
+ bl __restore_fpsimd
+
+ skip_debug_state x3, 1f
+ bl __restore_debug
+ 1:
+- restore_guest_32bit_state
+ restore_guest_regs
+
+ // That's it, no more messing around.
+diff --git a/arch/m32r/boot/compressed/misc.c b/arch/m32r/boot/compressed/misc.c
+index 28a09529f206..3a7692745868 100644
+--- a/arch/m32r/boot/compressed/misc.c
++++ b/arch/m32r/boot/compressed/misc.c
+@@ -86,6 +86,7 @@ decompress_kernel(int mmu_on, unsigned char *zimage_data,
+ free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE;
+
+ puts("\nDecompressing Linux... ");
+- decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
++ __decompress(input_data, input_len, NULL, NULL, output_data, 0,
++ NULL, error);
+ puts("done.\nBooting the kernel.\n");
+ }
+diff --git a/arch/mips/boot/compressed/decompress.c b/arch/mips/boot/compressed/decompress.c
+index 54831069a206..080cd53bac36 100644
+--- a/arch/mips/boot/compressed/decompress.c
++++ b/arch/mips/boot/compressed/decompress.c
+@@ -111,8 +111,8 @@ void decompress_kernel(unsigned long boot_heap_start)
+ puts("\n");
+
+ /* Decompress the kernel with according algorithm */
+- decompress((char *)zimage_start, zimage_size, 0, 0,
+- (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, error);
++ __decompress((char *)zimage_start, zimage_size, 0, 0,
++ (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, 0, error);
+
+ /* FIXME: should we flush cache here? */
+ puts("Now, booting the kernel...\n");
+diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
+index 6983fcd48131..2b95e34fa9e8 100644
+--- a/arch/mips/math-emu/cp1emu.c
++++ b/arch/mips/math-emu/cp1emu.c
+@@ -1137,7 +1137,7 @@ emul:
+ break;
+
+ case mfhc_op:
+- if (!cpu_has_mips_r2)
++ if (!cpu_has_mips_r2_r6)
+ goto sigill;
+
+ /* copregister rd -> gpr[rt] */
+@@ -1148,7 +1148,7 @@ emul:
+ break;
+
+ case mthc_op:
+- if (!cpu_has_mips_r2)
++ if (!cpu_has_mips_r2_r6)
+ goto sigill;
+
+ /* copregister rd <- gpr[rt] */
+@@ -1181,6 +1181,24 @@ emul:
+ }
+ break;
+
++ case bc1eqz_op:
++ case bc1nez_op:
++ if (!cpu_has_mips_r6 || delay_slot(xcp))
++ return SIGILL;
++
++ cond = likely = 0;
++ switch (MIPSInst_RS(ir)) {
++ case bc1eqz_op:
++ if (get_fpr32(¤t->thread.fpu.fpr[MIPSInst_RT(ir)], 0) & 0x1)
++ cond = 1;
++ break;
++ case bc1nez_op:
++ if (!(get_fpr32(¤t->thread.fpu.fpr[MIPSInst_RT(ir)], 0) & 0x1))
++ cond = 1;
++ break;
++ }
++ goto branch_common;
++
+ case bc_op:
+ if (delay_slot(xcp))
+ return SIGILL;
+@@ -1207,7 +1225,7 @@ emul:
+ case bct_op:
+ break;
+ }
+-
++branch_common:
+ set_delay_slot(xcp);
+ if (cond) {
+ /*
+diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
+index f3191db6e2e9..c0eab24f6a9e 100644
+--- a/arch/parisc/kernel/irq.c
++++ b/arch/parisc/kernel/irq.c
+@@ -507,8 +507,8 @@ void do_cpu_irq_mask(struct pt_regs *regs)
+ struct pt_regs *old_regs;
+ unsigned long eirr_val;
+ int irq, cpu = smp_processor_id();
+-#ifdef CONFIG_SMP
+ struct irq_desc *desc;
++#ifdef CONFIG_SMP
+ cpumask_t dest;
+ #endif
+
+@@ -521,8 +521,12 @@ void do_cpu_irq_mask(struct pt_regs *regs)
+ goto set_out;
+ irq = eirr_to_irq(eirr_val);
+
+-#ifdef CONFIG_SMP
++ /* Filter out spurious interrupts, mostly from serial port at bootup */
+ desc = irq_to_desc(irq);
++ if (unlikely(!desc->action))
++ goto set_out;
++
++#ifdef CONFIG_SMP
+ cpumask_copy(&dest, desc->irq_data.affinity);
+ if (irqd_is_per_cpu(&desc->irq_data) &&
+ !cpumask_test_cpu(smp_processor_id(), &dest)) {
+diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
+index 7ef22e3387e0..0b8d26d3ba43 100644
+--- a/arch/parisc/kernel/syscall.S
++++ b/arch/parisc/kernel/syscall.S
+@@ -821,7 +821,7 @@ cas2_action:
+ /* 64bit CAS */
+ #ifdef CONFIG_64BIT
+ 19: ldd,ma 0(%sr3,%r26), %r29
+- sub,= %r29, %r25, %r0
++ sub,*= %r29, %r25, %r0
+ b,n cas2_end
+ 20: std,ma %r24, 0(%sr3,%r26)
+ copy %r0, %r28
+diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
+index 73eddda53b8e..4eec430d8fa8 100644
+--- a/arch/powerpc/boot/Makefile
++++ b/arch/powerpc/boot/Makefile
+@@ -28,6 +28,9 @@ BOOTCFLAGS += -m64
+ endif
+ ifdef CONFIG_CPU_BIG_ENDIAN
+ BOOTCFLAGS += -mbig-endian
++else
++BOOTCFLAGS += -mlittle-endian
++BOOTCFLAGS += $(call cc-option,-mabi=elfv2)
+ endif
+
+ BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
+diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
+index 43e6ad424c7f..88d27e3258d2 100644
+--- a/arch/powerpc/include/asm/pgtable-ppc64.h
++++ b/arch/powerpc/include/asm/pgtable-ppc64.h
+@@ -135,7 +135,19 @@
+ #define pte_iterate_hashed_end() } while(0)
+
+ #ifdef CONFIG_PPC_HAS_HASH_64K
+-#define pte_pagesize_index(mm, addr, pte) get_slice_psize(mm, addr)
++/*
++ * We expect this to be called only for user addresses or kernel virtual
++ * addresses other than the linear mapping.
++ */
++#define pte_pagesize_index(mm, addr, pte) \
++ ({ \
++ unsigned int psize; \
++ if (is_kernel_addr(addr)) \
++ psize = MMU_PAGE_4K; \
++ else \
++ psize = get_slice_psize(mm, addr); \
++ psize; \
++ })
+ #else
+ #define pte_pagesize_index(mm, addr, pte) MMU_PAGE_4K
+ #endif
+diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h
+index 7a4ede16b283..b77ef369c0f0 100644
+--- a/arch/powerpc/include/asm/rtas.h
++++ b/arch/powerpc/include/asm/rtas.h
+@@ -343,6 +343,7 @@ extern void rtas_power_off(void);
+ extern void rtas_halt(void);
+ extern void rtas_os_term(char *str);
+ extern int rtas_get_sensor(int sensor, int index, int *state);
++extern int rtas_get_sensor_fast(int sensor, int index, int *state);
+ extern int rtas_get_power_level(int powerdomain, int *level);
+ extern int rtas_set_power_level(int powerdomain, int level, int *setlevel);
+ extern bool rtas_indicator_present(int token, int *maxindex);
+diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h
+index 58abeda64cb7..15cca17cba4b 100644
+--- a/arch/powerpc/include/asm/switch_to.h
++++ b/arch/powerpc/include/asm/switch_to.h
+@@ -29,6 +29,7 @@ static inline void save_early_sprs(struct thread_struct *prev) {}
+
+ extern void enable_kernel_fp(void);
+ extern void enable_kernel_altivec(void);
++extern void enable_kernel_vsx(void);
+ extern int emulate_altivec(struct pt_regs *);
+ extern void __giveup_vsx(struct task_struct *);
+ extern void giveup_vsx(struct task_struct *);
+diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
+index 9ee61d15653d..cb565ad0a5b6 100644
+--- a/arch/powerpc/kernel/eeh.c
++++ b/arch/powerpc/kernel/eeh.c
+@@ -310,11 +310,26 @@ void eeh_slot_error_detail(struct eeh_pe *pe, int severity)
+ if (!(pe->type & EEH_PE_PHB)) {
+ if (eeh_has_flag(EEH_ENABLE_IO_FOR_LOG))
+ eeh_pci_enable(pe, EEH_OPT_THAW_MMIO);
++
++ /*
++ * The config space of some PCI devices can't be accessed
++ * when their PEs are in frozen state. Otherwise, fenced
++ * PHB might be seen. Those PEs are identified with flag
++ * EEH_PE_CFG_RESTRICTED, indicating EEH_PE_CFG_BLOCKED
++ * is set automatically when the PE is put to EEH_PE_ISOLATED.
++ *
++ * Restoring BARs possibly triggers PCI config access in
++ * (OPAL) firmware and then causes fenced PHB. If the
++ * PCI config is blocked with flag EEH_PE_CFG_BLOCKED, it's
++ * pointless to restore BARs and dump config space.
++ */
+ eeh_ops->configure_bridge(pe);
+- eeh_pe_restore_bars(pe);
++ if (!(pe->state & EEH_PE_CFG_BLOCKED)) {
++ eeh_pe_restore_bars(pe);
+
+- pci_regs_buf[0] = 0;
+- eeh_pe_traverse(pe, eeh_dump_pe_log, &loglen);
++ pci_regs_buf[0] = 0;
++ eeh_pe_traverse(pe, eeh_dump_pe_log, &loglen);
++ }
+ }
+
+ eeh_ops->get_log(pe, severity, pci_regs_buf, loglen);
+@@ -1118,9 +1133,6 @@ void eeh_add_device_late(struct pci_dev *dev)
+ return;
+ }
+
+- if (eeh_has_flag(EEH_PROBE_MODE_DEV))
+- eeh_ops->probe(pdn, NULL);
+-
+ /*
+ * The EEH cache might not be removed correctly because of
+ * unbalanced kref to the device during unplug time, which
+@@ -1144,6 +1156,9 @@ void eeh_add_device_late(struct pci_dev *dev)
+ dev->dev.archdata.edev = NULL;
+ }
+
++ if (eeh_has_flag(EEH_PROBE_MODE_DEV))
++ eeh_ops->probe(pdn, NULL);
++
+ edev->pdev = dev;
+ dev->dev.archdata.edev = edev;
+
+diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
+index febb50dd5328..0596373cd1c3 100644
+--- a/arch/powerpc/kernel/process.c
++++ b/arch/powerpc/kernel/process.c
+@@ -204,8 +204,6 @@ EXPORT_SYMBOL_GPL(flush_altivec_to_thread);
+ #endif /* CONFIG_ALTIVEC */
+
+ #ifdef CONFIG_VSX
+-#if 0
+-/* not currently used, but some crazy RAID module might want to later */
+ void enable_kernel_vsx(void)
+ {
+ WARN_ON(preemptible());
+@@ -220,7 +218,6 @@ void enable_kernel_vsx(void)
+ #endif /* CONFIG_SMP */
+ }
+ EXPORT_SYMBOL(enable_kernel_vsx);
+-#endif
+
+ void giveup_vsx(struct task_struct *tsk)
+ {
+diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
+index 7a488c108410..caffb10e7aa3 100644
+--- a/arch/powerpc/kernel/rtas.c
++++ b/arch/powerpc/kernel/rtas.c
+@@ -584,6 +584,23 @@ int rtas_get_sensor(int sensor, int index, int *state)
+ }
+ EXPORT_SYMBOL(rtas_get_sensor);
+
++int rtas_get_sensor_fast(int sensor, int index, int *state)
++{
++ int token = rtas_token("get-sensor-state");
++ int rc;
++
++ if (token == RTAS_UNKNOWN_SERVICE)
++ return -ENOENT;
++
++ rc = rtas_call(token, 2, 2, state, sensor, index);
++ WARN_ON(rc == RTAS_BUSY || (rc >= RTAS_EXTENDED_DELAY_MIN &&
++ rc <= RTAS_EXTENDED_DELAY_MAX));
++
++ if (rc < 0)
++ return rtas_error_rc(rc);
++ return rc;
++}
++
+ bool rtas_indicator_present(int token, int *maxindex)
+ {
+ int proplen, count, i;
+diff --git a/arch/powerpc/mm/hugepage-hash64.c b/arch/powerpc/mm/hugepage-hash64.c
+index 43dafb9d6a46..4d87122cf6a7 100644
+--- a/arch/powerpc/mm/hugepage-hash64.c
++++ b/arch/powerpc/mm/hugepage-hash64.c
+@@ -85,7 +85,6 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid,
+ BUG_ON(index >= 4096);
+
+ vpn = hpt_vpn(ea, vsid, ssize);
+- hash = hpt_hash(vpn, shift, ssize);
+ hpte_slot_array = get_hpte_slot_array(pmdp);
+ if (psize == MMU_PAGE_4K) {
+ /*
+@@ -101,6 +100,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid,
+ valid = hpte_valid(hpte_slot_array, index);
+ if (valid) {
+ /* update the hpte bits */
++ hash = hpt_hash(vpn, shift, ssize);
+ hidx = hpte_hash_index(hpte_slot_array, index);
+ if (hidx & _PTEIDX_SECONDARY)
+ hash = ~hash;
+@@ -126,6 +126,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid,
+ if (!valid) {
+ unsigned long hpte_group;
+
++ hash = hpt_hash(vpn, shift, ssize);
+ /* insert new entry */
+ pa = pmd_pfn(__pmd(old_pmd)) << PAGE_SHIFT;
+ new_pmd |= _PAGE_HASHPTE;
+diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
+index 02e4a1745516..3b6647e574b6 100644
+--- a/arch/powerpc/platforms/pseries/ras.c
++++ b/arch/powerpc/platforms/pseries/ras.c
+@@ -189,7 +189,8 @@ static irqreturn_t ras_epow_interrupt(int irq, void *dev_id)
+ int state;
+ int critical;
+
+- status = rtas_get_sensor(EPOW_SENSOR_TOKEN, EPOW_SENSOR_INDEX, &state);
++ status = rtas_get_sensor_fast(EPOW_SENSOR_TOKEN, EPOW_SENSOR_INDEX,
++ &state);
+
+ if (state > 3)
+ critical = 1; /* Time Critical */
+diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
+index df6a7041922b..e6e8b241d717 100644
+--- a/arch/powerpc/platforms/pseries/setup.c
++++ b/arch/powerpc/platforms/pseries/setup.c
+@@ -268,6 +268,11 @@ static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long act
+ eeh_dev_init(PCI_DN(np), pci->phb);
+ }
+ break;
++ case OF_RECONFIG_DETACH_NODE:
++ pci = PCI_DN(np);
++ if (pci)
++ list_del(&pci->list);
++ break;
+ default:
+ err = NOTIFY_DONE;
+ break;
+diff --git a/arch/s390/boot/compressed/misc.c b/arch/s390/boot/compressed/misc.c
+index 42506b371b74..4da604ebf6fd 100644
+--- a/arch/s390/boot/compressed/misc.c
++++ b/arch/s390/boot/compressed/misc.c
+@@ -167,7 +167,7 @@ unsigned long decompress_kernel(void)
+ #endif
+
+ puts("Uncompressing Linux... ");
+- decompress(input_data, input_len, NULL, NULL, output, NULL, error);
++ __decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error);
+ puts("Ok, booting the kernel.\n");
+ return (unsigned long) output;
+ }
+diff --git a/arch/sh/boot/compressed/misc.c b/arch/sh/boot/compressed/misc.c
+index 95470a472d2c..208a9753ab38 100644
+--- a/arch/sh/boot/compressed/misc.c
++++ b/arch/sh/boot/compressed/misc.c
+@@ -132,7 +132,7 @@ void decompress_kernel(void)
+
+ puts("Uncompressing Linux... ");
+ cache_control(CACHE_ENABLE);
+- decompress(input_data, input_len, NULL, NULL, output, NULL, error);
++ __decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error);
+ cache_control(CACHE_DISABLE);
+ puts("Ok, booting the kernel.\n");
+ }
+diff --git a/arch/unicore32/boot/compressed/misc.c b/arch/unicore32/boot/compressed/misc.c
+index 176d5bda3559..5c65dfee278c 100644
+--- a/arch/unicore32/boot/compressed/misc.c
++++ b/arch/unicore32/boot/compressed/misc.c
+@@ -119,8 +119,8 @@ unsigned long decompress_kernel(unsigned long output_start,
+ output_ptr = get_unaligned_le32(tmp);
+
+ arch_decomp_puts("Uncompressing Linux...");
+- decompress(input_data, input_data_end - input_data, NULL, NULL,
+- output_data, NULL, error);
++ __decompress(input_data, input_data_end - input_data, NULL, NULL,
++ output_data, 0, NULL, error);
+ arch_decomp_puts(" done, booting the kernel.\n");
+ return output_ptr;
+ }
+diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
+index a107b935e22f..e28437e0f708 100644
+--- a/arch/x86/boot/compressed/misc.c
++++ b/arch/x86/boot/compressed/misc.c
+@@ -424,7 +424,8 @@ asmlinkage __visible void *decompress_kernel(void *rmode, memptr heap,
+ #endif
+
+ debug_putstr("\nDecompressing Linux... ");
+- decompress(input_data, input_len, NULL, NULL, output, NULL, error);
++ __decompress(input_data, input_len, NULL, NULL, output, output_len,
++ NULL, error);
+ parse_elf(output);
+ /*
+ * 32-bit always performs relocations. 64-bit relocations are only
+diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
+index c8140e12816a..c23ab1ee3a9a 100644
+--- a/arch/x86/mm/init_32.c
++++ b/arch/x86/mm/init_32.c
+@@ -137,6 +137,7 @@ page_table_range_init_count(unsigned long start, unsigned long end)
+
+ vaddr = start;
+ pgd_idx = pgd_index(vaddr);
++ pmd_idx = pmd_index(vaddr);
+
+ for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd_idx++) {
+ for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end);
+diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c
+index b79685e06b70..279c5d674edf 100644
+--- a/block/blk-mq-sysfs.c
++++ b/block/blk-mq-sysfs.c
+@@ -141,15 +141,26 @@ static ssize_t blk_mq_sysfs_completed_show(struct blk_mq_ctx *ctx, char *page)
+
+ static ssize_t sysfs_list_show(char *page, struct list_head *list, char *msg)
+ {
+- char *start_page = page;
+ struct request *rq;
++ int len = snprintf(page, PAGE_SIZE - 1, "%s:\n", msg);
++
++ list_for_each_entry(rq, list, queuelist) {
++ const int rq_len = 2 * sizeof(rq) + 2;
++
++ /* if the output will be truncated */
++ if (PAGE_SIZE - 1 < len + rq_len) {
++ /* backspacing if it can't hold '\t...\n' */
++ if (PAGE_SIZE - 1 < len + 5)
++ len -= rq_len;
++ len += snprintf(page + len, PAGE_SIZE - 1 - len,
++ "\t...\n");
++ break;
++ }
++ len += snprintf(page + len, PAGE_SIZE - 1 - len,
++ "\t%p\n", rq);
++ }
+
+- page += sprintf(page, "%s:\n", msg);
+-
+- list_for_each_entry(rq, list, queuelist)
+- page += sprintf(page, "\t%p\n", rq);
+-
+- return page - start_page;
++ return len;
+ }
+
+ static ssize_t blk_mq_sysfs_rq_list_show(struct blk_mq_ctx *ctx, char *page)
+diff --git a/drivers/base/node.c b/drivers/base/node.c
+index a2aa65b4215d..b10479c87357 100644
+--- a/drivers/base/node.c
++++ b/drivers/base/node.c
+@@ -388,6 +388,16 @@ int register_mem_sect_under_node(struct memory_block *mem_blk, int nid)
+ for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) {
+ int page_nid;
+
++ /*
++ * memory block could have several absent sections from start.
++ * skip pfn range from absent section
++ */
++ if (!pfn_present(pfn)) {
++ pfn = round_down(pfn + PAGES_PER_SECTION,
++ PAGES_PER_SECTION) - 1;
++ continue;
++ }
++
+ page_nid = get_nid_for_pfn(pfn);
+ if (page_nid < 0)
+ continue;
+diff --git a/drivers/crypto/vmx/aes.c b/drivers/crypto/vmx/aes.c
+index ab300ea19434..41f93334cc44 100644
+--- a/drivers/crypto/vmx/aes.c
++++ b/drivers/crypto/vmx/aes.c
+@@ -80,6 +80,7 @@ static int p8_aes_setkey(struct crypto_tfm *tfm, const u8 *key,
+
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key);
+ ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key);
+ pagefault_enable();
+@@ -97,6 +98,7 @@ static void p8_aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+ } else {
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ aes_p8_encrypt(src, dst, &ctx->enc_key);
+ pagefault_enable();
+ }
+@@ -111,6 +113,7 @@ static void p8_aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+ } else {
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ aes_p8_decrypt(src, dst, &ctx->dec_key);
+ pagefault_enable();
+ }
+diff --git a/drivers/crypto/vmx/aes_cbc.c b/drivers/crypto/vmx/aes_cbc.c
+index 1a559b7dddb5..c8e7f653e5d3 100644
+--- a/drivers/crypto/vmx/aes_cbc.c
++++ b/drivers/crypto/vmx/aes_cbc.c
+@@ -81,6 +81,7 @@ static int p8_aes_cbc_setkey(struct crypto_tfm *tfm, const u8 *key,
+
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key);
+ ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key);
+ pagefault_enable();
+@@ -108,6 +109,7 @@ static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc,
+ } else {
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+
+ blkcipher_walk_init(&walk, dst, src, nbytes);
+ ret = blkcipher_walk_virt(desc, &walk);
+@@ -143,6 +145,7 @@ static int p8_aes_cbc_decrypt(struct blkcipher_desc *desc,
+ } else {
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+
+ blkcipher_walk_init(&walk, dst, src, nbytes);
+ ret = blkcipher_walk_virt(desc, &walk);
+diff --git a/drivers/crypto/vmx/aes_ctr.c b/drivers/crypto/vmx/aes_ctr.c
+index 96dbee4bf4a6..266e708d63df 100644
+--- a/drivers/crypto/vmx/aes_ctr.c
++++ b/drivers/crypto/vmx/aes_ctr.c
+@@ -79,6 +79,7 @@ static int p8_aes_ctr_setkey(struct crypto_tfm *tfm, const u8 *key,
+
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key);
+ pagefault_enable();
+
+@@ -97,6 +98,7 @@ static void p8_aes_ctr_final(struct p8_aes_ctr_ctx *ctx,
+
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ aes_p8_encrypt(ctrblk, keystream, &ctx->enc_key);
+ pagefault_enable();
+
+@@ -127,6 +129,7 @@ static int p8_aes_ctr_crypt(struct blkcipher_desc *desc,
+ while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) {
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ aes_p8_ctr32_encrypt_blocks(walk.src.virt.addr, walk.dst.virt.addr,
+ (nbytes & AES_BLOCK_MASK)/AES_BLOCK_SIZE, &ctx->enc_key, walk.iv);
+ pagefault_enable();
+diff --git a/drivers/crypto/vmx/ghash.c b/drivers/crypto/vmx/ghash.c
+index d0ffe277af5c..917b3f09e724 100644
+--- a/drivers/crypto/vmx/ghash.c
++++ b/drivers/crypto/vmx/ghash.c
+@@ -116,6 +116,7 @@ static int p8_ghash_setkey(struct crypto_shash *tfm, const u8 *key,
+
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ enable_kernel_fp();
+ gcm_init_p8(ctx->htable, (const u64 *) key);
+ pagefault_enable();
+@@ -142,6 +143,7 @@ static int p8_ghash_update(struct shash_desc *desc,
+ GHASH_DIGEST_SIZE - dctx->bytes);
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ enable_kernel_fp();
+ gcm_ghash_p8(dctx->shash, ctx->htable, dctx->buffer,
+ GHASH_DIGEST_SIZE);
+@@ -154,6 +156,7 @@ static int p8_ghash_update(struct shash_desc *desc,
+ if (len) {
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ enable_kernel_fp();
+ gcm_ghash_p8(dctx->shash, ctx->htable, src, len);
+ pagefault_enable();
+@@ -182,6 +185,7 @@ static int p8_ghash_final(struct shash_desc *desc, u8 *out)
+ dctx->buffer[i] = 0;
+ pagefault_disable();
+ enable_kernel_altivec();
++ enable_kernel_vsx();
+ enable_kernel_fp();
+ gcm_ghash_p8(dctx->shash, ctx->htable, dctx->buffer,
+ GHASH_DIGEST_SIZE);
+diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
+index c097d3a82bda..a9b01bcf7d0a 100644
+--- a/drivers/gpu/drm/radeon/radeon_combios.c
++++ b/drivers/gpu/drm/radeon/radeon_combios.c
+@@ -3387,6 +3387,14 @@ void radeon_combios_asic_init(struct drm_device *dev)
+ rdev->pdev->subsystem_device == 0x30ae)
+ return;
+
++ /* quirk for rs4xx HP Compaq dc5750 Small Form Factor to make it resume
++ * - it hangs on resume inside the dynclk 1 table.
++ */
++ if (rdev->family == CHIP_RS480 &&
++ rdev->pdev->subsystem_vendor == 0x103c &&
++ rdev->pdev->subsystem_device == 0x280a)
++ return;
++
+ /* DYN CLK 1 */
+ table = combios_get_table_offset(dev, COMBIOS_DYN_CLK_1_TABLE);
+ if (table)
+diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
+index b716b0815644..bebf11a6622a 100644
+--- a/drivers/infiniband/core/uverbs.h
++++ b/drivers/infiniband/core/uverbs.h
+@@ -85,7 +85,7 @@
+ */
+
+ struct ib_uverbs_device {
+- struct kref ref;
++ atomic_t refcount;
+ int num_comp_vectors;
+ struct completion comp;
+ struct device *dev;
+@@ -94,6 +94,7 @@ struct ib_uverbs_device {
+ struct cdev cdev;
+ struct rb_root xrcd_tree;
+ struct mutex xrcd_tree_mutex;
++ struct kobject kobj;
+ };
+
+ struct ib_uverbs_event_file {
+diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
+index a9f048990dfc..ccc2494b4ea7 100644
+--- a/drivers/infiniband/core/uverbs_cmd.c
++++ b/drivers/infiniband/core/uverbs_cmd.c
+@@ -2244,6 +2244,12 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
+ next->send_flags = user_wr->send_flags;
+
+ if (is_ud) {
++ if (next->opcode != IB_WR_SEND &&
++ next->opcode != IB_WR_SEND_WITH_IMM) {
++ ret = -EINVAL;
++ goto out_put;
++ }
++
+ next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah,
+ file->ucontext);
+ if (!next->wr.ud.ah) {
+@@ -2283,9 +2289,11 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
+ user_wr->wr.atomic.compare_add;
+ next->wr.atomic.swap = user_wr->wr.atomic.swap;
+ next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
++ case IB_WR_SEND:
+ break;
+ default:
+- break;
++ ret = -EINVAL;
++ goto out_put;
+ }
+ }
+
+diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
+index 88cce9bb72fe..09686d49d4c1 100644
+--- a/drivers/infiniband/core/uverbs_main.c
++++ b/drivers/infiniband/core/uverbs_main.c
+@@ -129,14 +129,18 @@ static int (*uverbs_ex_cmd_table[])(struct ib_uverbs_file *file,
+ static void ib_uverbs_add_one(struct ib_device *device);
+ static void ib_uverbs_remove_one(struct ib_device *device);
+
+-static void ib_uverbs_release_dev(struct kref *ref)
++static void ib_uverbs_release_dev(struct kobject *kobj)
+ {
+ struct ib_uverbs_device *dev =
+- container_of(ref, struct ib_uverbs_device, ref);
++ container_of(kobj, struct ib_uverbs_device, kobj);
+
+- complete(&dev->comp);
++ kfree(dev);
+ }
+
++static struct kobj_type ib_uverbs_dev_ktype = {
++ .release = ib_uverbs_release_dev,
++};
++
+ static void ib_uverbs_release_event_file(struct kref *ref)
+ {
+ struct ib_uverbs_event_file *file =
+@@ -302,13 +306,19 @@ static int ib_uverbs_cleanup_ucontext(struct ib_uverbs_file *file,
+ return context->device->dealloc_ucontext(context);
+ }
+
++static void ib_uverbs_comp_dev(struct ib_uverbs_device *dev)
++{
++ complete(&dev->comp);
++}
++
+ static void ib_uverbs_release_file(struct kref *ref)
+ {
+ struct ib_uverbs_file *file =
+ container_of(ref, struct ib_uverbs_file, ref);
+
+ module_put(file->device->ib_dev->owner);
+- kref_put(&file->device->ref, ib_uverbs_release_dev);
++ if (atomic_dec_and_test(&file->device->refcount))
++ ib_uverbs_comp_dev(file->device);
+
+ kfree(file);
+ }
+@@ -742,9 +752,7 @@ static int ib_uverbs_open(struct inode *inode, struct file *filp)
+ int ret;
+
+ dev = container_of(inode->i_cdev, struct ib_uverbs_device, cdev);
+- if (dev)
+- kref_get(&dev->ref);
+- else
++ if (!atomic_inc_not_zero(&dev->refcount))
+ return -ENXIO;
+
+ if (!try_module_get(dev->ib_dev->owner)) {
+@@ -765,6 +773,7 @@ static int ib_uverbs_open(struct inode *inode, struct file *filp)
+ mutex_init(&file->mutex);
+
+ filp->private_data = file;
++ kobject_get(&dev->kobj);
+
+ return nonseekable_open(inode, filp);
+
+@@ -772,13 +781,16 @@ err_module:
+ module_put(dev->ib_dev->owner);
+
+ err:
+- kref_put(&dev->ref, ib_uverbs_release_dev);
++ if (atomic_dec_and_test(&dev->refcount))
++ ib_uverbs_comp_dev(dev);
++
+ return ret;
+ }
+
+ static int ib_uverbs_close(struct inode *inode, struct file *filp)
+ {
+ struct ib_uverbs_file *file = filp->private_data;
++ struct ib_uverbs_device *dev = file->device;
+
+ ib_uverbs_cleanup_ucontext(file, file->ucontext);
+
+@@ -786,6 +798,7 @@ static int ib_uverbs_close(struct inode *inode, struct file *filp)
+ kref_put(&file->async_file->ref, ib_uverbs_release_event_file);
+
+ kref_put(&file->ref, ib_uverbs_release_file);
++ kobject_put(&dev->kobj);
+
+ return 0;
+ }
+@@ -881,10 +894,11 @@ static void ib_uverbs_add_one(struct ib_device *device)
+ if (!uverbs_dev)
+ return;
+
+- kref_init(&uverbs_dev->ref);
++ atomic_set(&uverbs_dev->refcount, 1);
+ init_completion(&uverbs_dev->comp);
+ uverbs_dev->xrcd_tree = RB_ROOT;
+ mutex_init(&uverbs_dev->xrcd_tree_mutex);
++ kobject_init(&uverbs_dev->kobj, &ib_uverbs_dev_ktype);
+
+ spin_lock(&map_lock);
+ devnum = find_first_zero_bit(dev_map, IB_UVERBS_MAX_DEVICES);
+@@ -911,6 +925,7 @@ static void ib_uverbs_add_one(struct ib_device *device)
+ cdev_init(&uverbs_dev->cdev, NULL);
+ uverbs_dev->cdev.owner = THIS_MODULE;
+ uverbs_dev->cdev.ops = device->mmap ? &uverbs_mmap_fops : &uverbs_fops;
++ uverbs_dev->cdev.kobj.parent = &uverbs_dev->kobj;
+ kobject_set_name(&uverbs_dev->cdev.kobj, "uverbs%d", uverbs_dev->devnum);
+ if (cdev_add(&uverbs_dev->cdev, base, 1))
+ goto err_cdev;
+@@ -941,9 +956,10 @@ err_cdev:
+ clear_bit(devnum, overflow_map);
+
+ err:
+- kref_put(&uverbs_dev->ref, ib_uverbs_release_dev);
++ if (atomic_dec_and_test(&uverbs_dev->refcount))
++ ib_uverbs_comp_dev(uverbs_dev);
+ wait_for_completion(&uverbs_dev->comp);
+- kfree(uverbs_dev);
++ kobject_put(&uverbs_dev->kobj);
+ return;
+ }
+
+@@ -963,9 +979,10 @@ static void ib_uverbs_remove_one(struct ib_device *device)
+ else
+ clear_bit(uverbs_dev->devnum - IB_UVERBS_MAX_DEVICES, overflow_map);
+
+- kref_put(&uverbs_dev->ref, ib_uverbs_release_dev);
++ if (atomic_dec_and_test(&uverbs_dev->refcount))
++ ib_uverbs_comp_dev(uverbs_dev);
+ wait_for_completion(&uverbs_dev->comp);
+- kfree(uverbs_dev);
++ kobject_put(&uverbs_dev->kobj);
+ }
+
+ static char *uverbs_devnode(struct device *dev, umode_t *mode)
+diff --git a/drivers/infiniband/hw/mlx4/ah.c b/drivers/infiniband/hw/mlx4/ah.c
+index f50a546224ad..33fdd50123f7 100644
+--- a/drivers/infiniband/hw/mlx4/ah.c
++++ b/drivers/infiniband/hw/mlx4/ah.c
+@@ -148,9 +148,13 @@ int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
+ enum rdma_link_layer ll;
+
+ memset(ah_attr, 0, sizeof *ah_attr);
+- ah_attr->sl = be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28;
+ ah_attr->port_num = be32_to_cpu(ah->av.ib.port_pd) >> 24;
+ ll = rdma_port_get_link_layer(ibah->device, ah_attr->port_num);
++ if (ll == IB_LINK_LAYER_ETHERNET)
++ ah_attr->sl = be32_to_cpu(ah->av.eth.sl_tclass_flowlabel) >> 29;
++ else
++ ah_attr->sl = be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28;
++
+ ah_attr->dlid = ll == IB_LINK_LAYER_INFINIBAND ? be16_to_cpu(ah->av.ib.dlid) : 0;
+ if (ah->av.ib.stat_rate)
+ ah_attr->static_rate = ah->av.ib.stat_rate - MLX4_STAT_RATE_OFFSET;
+diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
+index 0176caa5792c..2857ed89725e 100644
+--- a/drivers/infiniband/hw/mlx4/cq.c
++++ b/drivers/infiniband/hw/mlx4/cq.c
+@@ -629,7 +629,7 @@ static void mlx4_ib_poll_sw_comp(struct mlx4_ib_cq *cq, int num_entries,
+ * simulated FLUSH_ERR completions
+ */
+ list_for_each_entry(qp, &cq->send_qp_list, cq_send_list) {
+- mlx4_ib_qp_sw_comp(qp, num_entries, wc, npolled, 1);
++ mlx4_ib_qp_sw_comp(qp, num_entries, wc + *npolled, npolled, 1);
+ if (*npolled >= num_entries)
+ goto out;
+ }
+diff --git a/drivers/infiniband/hw/mlx4/mcg.c b/drivers/infiniband/hw/mlx4/mcg.c
+index ed327e6c8fdc..a0559a8af4f4 100644
+--- a/drivers/infiniband/hw/mlx4/mcg.c
++++ b/drivers/infiniband/hw/mlx4/mcg.c
+@@ -206,15 +206,16 @@ static int send_mad_to_wire(struct mlx4_ib_demux_ctx *ctx, struct ib_mad *mad)
+ {
+ struct mlx4_ib_dev *dev = ctx->dev;
+ struct ib_ah_attr ah_attr;
++ unsigned long flags;
+
+- spin_lock(&dev->sm_lock);
++ spin_lock_irqsave(&dev->sm_lock, flags);
+ if (!dev->sm_ah[ctx->port - 1]) {
+ /* port is not yet Active, sm_ah not ready */
+- spin_unlock(&dev->sm_lock);
++ spin_unlock_irqrestore(&dev->sm_lock, flags);
+ return -EAGAIN;
+ }
+ mlx4_ib_query_ah(dev->sm_ah[ctx->port - 1], &ah_attr);
+- spin_unlock(&dev->sm_lock);
++ spin_unlock_irqrestore(&dev->sm_lock, flags);
+ return mlx4_ib_send_to_wire(dev, mlx4_master_func_num(dev->dev),
+ ctx->port, IB_QPT_GSI, 0, 1, IB_QP1_QKEY,
+ &ah_attr, NULL, mad);
+diff --git a/drivers/infiniband/hw/mlx4/sysfs.c b/drivers/infiniband/hw/mlx4/sysfs.c
+index 6797108ce873..69fb5ba94d0f 100644
+--- a/drivers/infiniband/hw/mlx4/sysfs.c
++++ b/drivers/infiniband/hw/mlx4/sysfs.c
+@@ -640,6 +640,8 @@ static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave)
+ struct mlx4_port *p;
+ int i;
+ int ret;
++ int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port_num) ==
++ IB_LINK_LAYER_ETHERNET;
+
+ p = kzalloc(sizeof *p, GFP_KERNEL);
+ if (!p)
+@@ -657,7 +659,8 @@ static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave)
+
+ p->pkey_group.name = "pkey_idx";
+ p->pkey_group.attrs =
+- alloc_group_attrs(show_port_pkey, store_port_pkey,
++ alloc_group_attrs(show_port_pkey,
++ is_eth ? NULL : store_port_pkey,
+ dev->dev->caps.pkey_table_len[port_num]);
+ if (!p->pkey_group.attrs) {
+ ret = -ENOMEM;
+diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
+index 71c593583864..0c52f078759c 100644
+--- a/drivers/infiniband/hw/mlx5/mr.c
++++ b/drivers/infiniband/hw/mlx5/mr.c
+@@ -1119,19 +1119,7 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ return &mr->ibmr;
+
+ error:
+- /*
+- * Destroy the umem *before* destroying the MR, to ensure we
+- * will not have any in-flight notifiers when destroying the
+- * MR.
+- *
+- * As the MR is completely invalid to begin with, and this
+- * error path is only taken if we can't push the mr entry into
+- * the pagefault tree, this is safe.
+- */
+-
+ ib_umem_release(umem);
+- /* Kill the MR, and return an error code. */
+- clean_mr(mr);
+ return ERR_PTR(err);
+ }
+
+diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
+index ad843c786e72..5afaa218508d 100644
+--- a/drivers/infiniband/hw/qib/qib_keys.c
++++ b/drivers/infiniband/hw/qib/qib_keys.c
+@@ -86,6 +86,10 @@ int qib_alloc_lkey(struct qib_mregion *mr, int dma_region)
+ * unrestricted LKEY.
+ */
+ rkt->gen++;
++ /*
++ * bits are capped in qib_verbs.c to insure enough bits
++ * for generation number
++ */
+ mr->lkey = (r << (32 - ib_qib_lkey_table_size)) |
+ ((((1 << (24 - ib_qib_lkey_table_size)) - 1) & rkt->gen)
+ << 8);
+diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
+index 4a3599890ea5..9dd5d9a0556b 100644
+--- a/drivers/infiniband/hw/qib/qib_verbs.c
++++ b/drivers/infiniband/hw/qib/qib_verbs.c
+@@ -40,6 +40,7 @@
+ #include <linux/rculist.h>
+ #include <linux/mm.h>
+ #include <linux/random.h>
++#include <linux/vmalloc.h>
+
+ #include "qib.h"
+ #include "qib_common.h"
+@@ -2089,10 +2090,16 @@ int qib_register_ib_device(struct qib_devdata *dd)
+ * the LKEY). The remaining bits act as a generation number or tag.
+ */
+ spin_lock_init(&dev->lk_table.lock);
++ /* insure generation is at least 4 bits see keys.c */
++ if (ib_qib_lkey_table_size > MAX_LKEY_TABLE_BITS) {
++ qib_dev_warn(dd, "lkey bits %u too large, reduced to %u\n",
++ ib_qib_lkey_table_size, MAX_LKEY_TABLE_BITS);
++ ib_qib_lkey_table_size = MAX_LKEY_TABLE_BITS;
++ }
+ dev->lk_table.max = 1 << ib_qib_lkey_table_size;
+ lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
+ dev->lk_table.table = (struct qib_mregion __rcu **)
+- __get_free_pages(GFP_KERNEL, get_order(lk_tab_size));
++ vmalloc(lk_tab_size);
+ if (dev->lk_table.table == NULL) {
+ ret = -ENOMEM;
+ goto err_lk;
+@@ -2265,7 +2272,7 @@ err_tx:
+ sizeof(struct qib_pio_header),
+ dev->pio_hdrs, dev->pio_hdrs_phys);
+ err_hdrs:
+- free_pages((unsigned long) dev->lk_table.table, get_order(lk_tab_size));
++ vfree(dev->lk_table.table);
+ err_lk:
+ kfree(dev->qp_table);
+ err_qpt:
+@@ -2319,8 +2326,7 @@ void qib_unregister_ib_device(struct qib_devdata *dd)
+ sizeof(struct qib_pio_header),
+ dev->pio_hdrs, dev->pio_hdrs_phys);
+ lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
+- free_pages((unsigned long) dev->lk_table.table,
+- get_order(lk_tab_size));
++ vfree(dev->lk_table.table);
+ kfree(dev->qp_table);
+ }
+
+diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
+index bfc8948fdd35..44ca28c83fe6 100644
+--- a/drivers/infiniband/hw/qib/qib_verbs.h
++++ b/drivers/infiniband/hw/qib/qib_verbs.h
+@@ -647,6 +647,8 @@ struct qib_qpn_table {
+ struct qpn_map map[QPNMAP_ENTRIES];
+ };
+
++#define MAX_LKEY_TABLE_BITS 23
++
+ struct qib_lkey_table {
+ spinlock_t lock; /* protect changes in this struct */
+ u32 next; /* next unused index (speeds search) */
+diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
+index 6a594aac2290..c933d882c35c 100644
+--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
++++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
+@@ -201,6 +201,7 @@ iser_initialize_task_headers(struct iscsi_task *task,
+ goto out;
+ }
+
++ tx_desc->mapped = true;
+ tx_desc->dma_addr = dma_addr;
+ tx_desc->tx_sg[0].addr = tx_desc->dma_addr;
+ tx_desc->tx_sg[0].length = ISER_HEADERS_LEN;
+@@ -360,16 +361,19 @@ iscsi_iser_task_xmit(struct iscsi_task *task)
+ static void iscsi_iser_cleanup_task(struct iscsi_task *task)
+ {
+ struct iscsi_iser_task *iser_task = task->dd_data;
+- struct iser_tx_desc *tx_desc = &iser_task->desc;
+- struct iser_conn *iser_conn = task->conn->dd_data;
++ struct iser_tx_desc *tx_desc = &iser_task->desc;
++ struct iser_conn *iser_conn = task->conn->dd_data;
+ struct iser_device *device = iser_conn->ib_conn.device;
+
+ /* DEVICE_REMOVAL event might have already released the device */
+ if (!device)
+ return;
+
+- ib_dma_unmap_single(device->ib_device,
+- tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE);
++ if (likely(tx_desc->mapped)) {
++ ib_dma_unmap_single(device->ib_device, tx_desc->dma_addr,
++ ISER_HEADERS_LEN, DMA_TO_DEVICE);
++ tx_desc->mapped = false;
++ }
+
+ /* mgmt tasks do not need special cleanup */
+ if (!task->sc)
+diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
+index 262ba1f8ee50..d2b6caf7694d 100644
+--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
++++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
+@@ -270,6 +270,7 @@ enum iser_desc_type {
+ * sg[1] optionally points to either of immediate data
+ * unsolicited data-out or control
+ * @num_sge: number sges used on this TX task
++ * @mapped: Is the task header mapped
+ */
+ struct iser_tx_desc {
+ struct iser_hdr iser_header;
+@@ -278,6 +279,7 @@ struct iser_tx_desc {
+ u64 dma_addr;
+ struct ib_sge tx_sg[2];
+ int num_sge;
++ bool mapped;
+ };
+
+ #define ISER_RX_PAD_SIZE (256 - (ISER_RX_PAYLOAD_SIZE + \
+diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
+index 3e2118e8ed87..0a47f42fec24 100644
+--- a/drivers/infiniband/ulp/iser/iser_initiator.c
++++ b/drivers/infiniband/ulp/iser/iser_initiator.c
+@@ -454,7 +454,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
+ unsigned long buf_offset;
+ unsigned long data_seg_len;
+ uint32_t itt;
+- int err = 0;
++ int err;
+ struct ib_sge *tx_dsg;
+
+ itt = (__force uint32_t)hdr->itt;
+@@ -475,7 +475,9 @@ int iser_send_data_out(struct iscsi_conn *conn,
+ memcpy(&tx_desc->iscsi_header, hdr, sizeof(struct iscsi_hdr));
+
+ /* build the tx desc */
+- iser_initialize_task_headers(task, tx_desc);
++ err = iser_initialize_task_headers(task, tx_desc);
++ if (err)
++ goto send_data_out_error;
+
+ mem_reg = &iser_task->rdma_reg[ISER_DIR_OUT];
+ tx_dsg = &tx_desc->tx_sg[1];
+@@ -502,7 +504,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
+
+ send_data_out_error:
+ kmem_cache_free(ig.desc_cache, tx_desc);
+- iser_err("conn %p failed err %d\n",conn, err);
++ iser_err("conn %p failed err %d\n", conn, err);
+ return err;
+ }
+
+diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
+index 75c01b27bd0b..025f93105444 100644
+--- a/drivers/infiniband/ulp/srp/ib_srp.c
++++ b/drivers/infiniband/ulp/srp/ib_srp.c
+@@ -2761,6 +2761,13 @@ static int srp_sdev_count(struct Scsi_Host *host)
+ return c;
+ }
+
++/*
++ * Return values:
++ * < 0 upon failure. Caller is responsible for SRP target port cleanup.
++ * 0 and target->state == SRP_TARGET_REMOVED if asynchronous target port
++ * removal has been scheduled.
++ * 0 and target->state != SRP_TARGET_REMOVED upon success.
++ */
+ static int srp_add_target(struct srp_host *host, struct srp_target_port *target)
+ {
+ struct srp_rport_identifiers ids;
+@@ -3266,7 +3273,7 @@ static ssize_t srp_create_target(struct device *dev,
+ srp_free_ch_ib(target, ch);
+ srp_free_req_data(target, ch);
+ target->ch_count = ch - target->ch;
+- break;
++ goto connected;
+ }
+ }
+
+@@ -3276,6 +3283,7 @@ static ssize_t srp_create_target(struct device *dev,
+ node_idx++;
+ }
+
++connected:
+ target->scsi_host->nr_hw_queues = target->ch_count;
+
+ ret = srp_add_target(host, target);
+@@ -3298,6 +3306,8 @@ out:
+ mutex_unlock(&host->add_target_mutex);
+
+ scsi_host_put(target->scsi_host);
++ if (ret < 0)
++ scsi_host_put(target->scsi_host);
+
+ return ret;
+
+diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
+index a18f41b89b6a..2ae522f0d2b2 100644
+--- a/drivers/input/evdev.c
++++ b/drivers/input/evdev.c
+@@ -290,19 +290,14 @@ static int evdev_flush(struct file *file, fl_owner_t id)
+ {
+ struct evdev_client *client = file->private_data;
+ struct evdev *evdev = client->evdev;
+- int retval;
+
+- retval = mutex_lock_interruptible(&evdev->mutex);
+- if (retval)
+- return retval;
++ mutex_lock(&evdev->mutex);
+
+- if (!evdev->exist || client->revoked)
+- retval = -ENODEV;
+- else
+- retval = input_flush_device(&evdev->handle, file);
++ if (evdev->exist && !client->revoked)
++ input_flush_device(&evdev->handle, file);
+
+ mutex_unlock(&evdev->mutex);
+- return retval;
++ return 0;
+ }
+
+ static void evdev_free(struct device *dev)
+diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c
+index abeedc9a78c2..2570f2a25dc4 100644
+--- a/drivers/iommu/fsl_pamu.c
++++ b/drivers/iommu/fsl_pamu.c
+@@ -41,7 +41,6 @@ struct pamu_isr_data {
+
+ static struct paace *ppaact;
+ static struct paace *spaact;
+-static struct ome *omt __initdata;
+
+ /*
+ * Table for matching compatible strings, for device tree
+@@ -50,7 +49,7 @@ static struct ome *omt __initdata;
+ * SOCs. For the older SOCs "fsl,qoriq-device-config-1.0"
+ * string would be used.
+ */
+-static const struct of_device_id guts_device_ids[] __initconst = {
++static const struct of_device_id guts_device_ids[] = {
+ { .compatible = "fsl,qoriq-device-config-1.0", },
+ { .compatible = "fsl,qoriq-device-config-2.0", },
+ {}
+@@ -599,7 +598,7 @@ found_cpu_node:
+ * Memory accesses to QMAN and BMAN private memory need not be coherent, so
+ * clear the PAACE entry coherency attribute for them.
+ */
+-static void __init setup_qbman_paace(struct paace *ppaace, int paace_type)
++static void setup_qbman_paace(struct paace *ppaace, int paace_type)
+ {
+ switch (paace_type) {
+ case QMAN_PAACE:
+@@ -629,7 +628,7 @@ static void __init setup_qbman_paace(struct paace *ppaace, int paace_type)
+ * this table to translate device transaction to appropriate corenet
+ * transaction.
+ */
+-static void __init setup_omt(struct ome *omt)
++static void setup_omt(struct ome *omt)
+ {
+ struct ome *ome;
+
+@@ -666,7 +665,7 @@ static void __init setup_omt(struct ome *omt)
+ * Get the maximum number of PAACT table entries
+ * and subwindows supported by PAMU
+ */
+-static void __init get_pamu_cap_values(unsigned long pamu_reg_base)
++static void get_pamu_cap_values(unsigned long pamu_reg_base)
+ {
+ u32 pc_val;
+
+@@ -676,9 +675,9 @@ static void __init get_pamu_cap_values(unsigned long pamu_reg_base)
+ }
+
+ /* Setup PAMU registers pointing to PAACT, SPAACT and OMT */
+-static int __init setup_one_pamu(unsigned long pamu_reg_base, unsigned long pamu_reg_size,
+- phys_addr_t ppaact_phys, phys_addr_t spaact_phys,
+- phys_addr_t omt_phys)
++static int setup_one_pamu(unsigned long pamu_reg_base, unsigned long pamu_reg_size,
++ phys_addr_t ppaact_phys, phys_addr_t spaact_phys,
++ phys_addr_t omt_phys)
+ {
+ u32 *pc;
+ struct pamu_mmap_regs *pamu_regs;
+@@ -720,7 +719,7 @@ static int __init setup_one_pamu(unsigned long pamu_reg_base, unsigned long pamu
+ }
+
+ /* Enable all device LIODNS */
+-static void __init setup_liodns(void)
++static void setup_liodns(void)
+ {
+ int i, len;
+ struct paace *ppaace;
+@@ -846,7 +845,7 @@ struct ccsr_law {
+ /*
+ * Create a coherence subdomain for a given memory block.
+ */
+-static int __init create_csd(phys_addr_t phys, size_t size, u32 csd_port_id)
++static int create_csd(phys_addr_t phys, size_t size, u32 csd_port_id)
+ {
+ struct device_node *np;
+ const __be32 *iprop;
+@@ -988,7 +987,7 @@ error:
+ static const struct {
+ u32 svr;
+ u32 port_id;
+-} port_id_map[] __initconst = {
++} port_id_map[] = {
+ {(SVR_P2040 << 8) | 0x10, 0xFF000000}, /* P2040 1.0 */
+ {(SVR_P2040 << 8) | 0x11, 0xFF000000}, /* P2040 1.1 */
+ {(SVR_P2041 << 8) | 0x10, 0xFF000000}, /* P2041 1.0 */
+@@ -1006,7 +1005,7 @@ static const struct {
+
+ #define SVR_SECURITY 0x80000 /* The Security (E) bit */
+
+-static int __init fsl_pamu_probe(struct platform_device *pdev)
++static int fsl_pamu_probe(struct platform_device *pdev)
+ {
+ struct device *dev = &pdev->dev;
+ void __iomem *pamu_regs = NULL;
+@@ -1022,6 +1021,7 @@ static int __init fsl_pamu_probe(struct platform_device *pdev)
+ int irq;
+ phys_addr_t ppaact_phys;
+ phys_addr_t spaact_phys;
++ struct ome *omt;
+ phys_addr_t omt_phys;
+ size_t mem_size = 0;
+ unsigned int order = 0;
+@@ -1200,7 +1200,7 @@ error:
+ return ret;
+ }
+
+-static struct platform_driver fsl_of_pamu_driver __initdata = {
++static struct platform_driver fsl_of_pamu_driver = {
+ .driver = {
+ .name = "fsl-of-pamu",
+ },
+diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
+index c87c4b1bfc00..c23427951ec1 100644
+--- a/drivers/iommu/intel-iommu.c
++++ b/drivers/iommu/intel-iommu.c
+@@ -681,6 +681,7 @@ static inline struct context_entry *iommu_context_addr(struct intel_iommu *iommu
+ struct context_entry *context;
+ u64 *entry;
+
++ entry = &root->lo;
+ if (ecs_enabled(iommu)) {
+ if (devfn >= 0x80) {
+ devfn -= 0x80;
+@@ -688,7 +689,6 @@ static inline struct context_entry *iommu_context_addr(struct intel_iommu *iommu
+ }
+ devfn *= 2;
+ }
+- entry = &root->lo;
+ if (*entry & 1)
+ context = phys_to_virt(*entry & VTD_PAGE_MASK);
+ else {
+diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
+index 4e460216bd16..e29d5d7fe220 100644
+--- a/drivers/iommu/io-pgtable-arm.c
++++ b/drivers/iommu/io-pgtable-arm.c
+@@ -200,6 +200,10 @@ typedef u64 arm_lpae_iopte;
+
+ static bool selftest_running = false;
+
++static int __arm_lpae_unmap(struct arm_lpae_io_pgtable *data,
++ unsigned long iova, size_t size, int lvl,
++ arm_lpae_iopte *ptep);
++
+ static int arm_lpae_init_pte(struct arm_lpae_io_pgtable *data,
+ unsigned long iova, phys_addr_t paddr,
+ arm_lpae_iopte prot, int lvl,
+@@ -207,10 +211,21 @@ static int arm_lpae_init_pte(struct arm_lpae_io_pgtable *data,
+ {
+ arm_lpae_iopte pte = prot;
+
+- /* We require an unmap first */
+ if (iopte_leaf(*ptep, lvl)) {
++ /* We require an unmap first */
+ WARN_ON(!selftest_running);
+ return -EEXIST;
++ } else if (iopte_type(*ptep, lvl) == ARM_LPAE_PTE_TYPE_TABLE) {
++ /*
++ * We need to unmap and free the old table before
++ * overwriting it with a block entry.
++ */
++ arm_lpae_iopte *tblp;
++ size_t sz = ARM_LPAE_BLOCK_SIZE(lvl, data);
++
++ tblp = ptep - ARM_LPAE_LVL_IDX(iova, lvl, data);
++ if (WARN_ON(__arm_lpae_unmap(data, iova, sz, lvl, tblp) != sz))
++ return -EINVAL;
+ }
+
+ if (data->iop.cfg.quirks & IO_PGTABLE_QUIRK_ARM_NS)
+diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
+index c845d99ecf6b..e0ff5f4d7fed 100644
+--- a/drivers/iommu/tegra-smmu.c
++++ b/drivers/iommu/tegra-smmu.c
+@@ -26,6 +26,7 @@ struct tegra_smmu {
+ const struct tegra_smmu_soc *soc;
+
+ unsigned long pfn_mask;
++ unsigned long tlb_mask;
+
+ unsigned long *asids;
+ struct mutex lock;
+@@ -65,7 +66,8 @@ static inline u32 smmu_readl(struct tegra_smmu *smmu, unsigned long offset)
+ #define SMMU_TLB_CONFIG 0x14
+ #define SMMU_TLB_CONFIG_HIT_UNDER_MISS (1 << 29)
+ #define SMMU_TLB_CONFIG_ROUND_ROBIN_ARBITRATION (1 << 28)
+-#define SMMU_TLB_CONFIG_ACTIVE_LINES(x) ((x) & 0x3f)
++#define SMMU_TLB_CONFIG_ACTIVE_LINES(smmu) \
++ ((smmu)->soc->num_tlb_lines & (smmu)->tlb_mask)
+
+ #define SMMU_PTC_CONFIG 0x18
+ #define SMMU_PTC_CONFIG_ENABLE (1 << 29)
+@@ -716,6 +718,9 @@ struct tegra_smmu *tegra_smmu_probe(struct device *dev,
+ smmu->pfn_mask = BIT_MASK(mc->soc->num_address_bits - PAGE_SHIFT) - 1;
+ dev_dbg(dev, "address bits: %u, PFN mask: %#lx\n",
+ mc->soc->num_address_bits, smmu->pfn_mask);
++ smmu->tlb_mask = (smmu->soc->num_tlb_lines << 1) - 1;
++ dev_dbg(dev, "TLB lines: %u, mask: %#lx\n", smmu->soc->num_tlb_lines,
++ smmu->tlb_mask);
+
+ value = SMMU_PTC_CONFIG_ENABLE | SMMU_PTC_CONFIG_INDEX_MAP(0x3f);
+
+@@ -725,7 +730,7 @@ struct tegra_smmu *tegra_smmu_probe(struct device *dev,
+ smmu_writel(smmu, value, SMMU_PTC_CONFIG);
+
+ value = SMMU_TLB_CONFIG_HIT_UNDER_MISS |
+- SMMU_TLB_CONFIG_ACTIVE_LINES(0x20);
++ SMMU_TLB_CONFIG_ACTIVE_LINES(smmu);
+
+ if (soc->supports_round_robin_arbitration)
+ value |= SMMU_TLB_CONFIG_ROUND_ROBIN_ARBITRATION;
+diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
+index 8c91fd5eb6fd..3ac9c4194814 100644
+--- a/drivers/isdn/gigaset/ser-gigaset.c
++++ b/drivers/isdn/gigaset/ser-gigaset.c
+@@ -524,9 +524,18 @@ gigaset_tty_open(struct tty_struct *tty)
+ cs->hw.ser->tty = tty;
+ atomic_set(&cs->hw.ser->refcnt, 1);
+ init_completion(&cs->hw.ser->dead_cmp);
+-
+ tty->disc_data = cs;
+
++ /* Set the amount of data we're willing to receive per call
++ * from the hardware driver to half of the input buffer size
++ * to leave some reserve.
++ * Note: We don't do flow control towards the hardware driver.
++ * If more data is received than will fit into the input buffer,
++ * it will be dropped and an error will be logged. This should
++ * never happen as the device is slow and the buffer size ample.
++ */
++ tty->receive_room = RBUFSIZE/2;
++
+ /* OK.. Initialization of the datastructures and the HW is done.. Now
+ * startup system and notify the LL that we are ready to run
+ */
+diff --git a/drivers/md/md.c b/drivers/md/md.c
+index e4621511d118..e8c44fcb1ad1 100644
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -5365,6 +5365,8 @@ static void __md_stop(struct mddev *mddev)
+ {
+ struct md_personality *pers = mddev->pers;
+ mddev_detach(mddev);
++ /* Ensure ->event_work is done */
++ flush_workqueue(md_misc_wq);
+ spin_lock(&mddev->lock);
+ mddev->ready = 0;
+ mddev->pers = NULL;
+diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
+index f55c3f35b746..fe0122771642 100644
+--- a/drivers/md/raid10.c
++++ b/drivers/md/raid10.c
+@@ -3566,6 +3566,7 @@ static struct r10conf *setup_conf(struct mddev *mddev)
+ /* far_copies must be 1 */
+ conf->prev.stride = conf->dev_sectors;
+ }
++ conf->reshape_safe = conf->reshape_progress;
+ spin_lock_init(&conf->device_lock);
+ INIT_LIST_HEAD(&conf->retry_list);
+
+@@ -3770,7 +3771,6 @@ static int run(struct mddev *mddev)
+ }
+ conf->offset_diff = min_offset_diff;
+
+- conf->reshape_safe = conf->reshape_progress;
+ clear_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ clear_bit(MD_RECOVERY_CHECK, &mddev->recovery);
+ set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
+@@ -4113,6 +4113,7 @@ static int raid10_start_reshape(struct mddev *mddev)
+ conf->reshape_progress = size;
+ } else
+ conf->reshape_progress = 0;
++ conf->reshape_safe = conf->reshape_progress;
+ spin_unlock_irq(&conf->device_lock);
+
+ if (mddev->delta_disks && mddev->bitmap) {
+@@ -4180,6 +4181,7 @@ abort:
+ rdev->new_data_offset = rdev->data_offset;
+ smp_wmb();
+ conf->reshape_progress = MaxSector;
++ conf->reshape_safe = MaxSector;
+ mddev->reshape_position = MaxSector;
+ spin_unlock_irq(&conf->device_lock);
+ return ret;
+@@ -4534,6 +4536,7 @@ static void end_reshape(struct r10conf *conf)
+ md_finish_reshape(conf->mddev);
+ smp_wmb();
+ conf->reshape_progress = MaxSector;
++ conf->reshape_safe = MaxSector;
+ spin_unlock_irq(&conf->device_lock);
+
+ /* read-ahead size must cover two whole stripes, which is
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index b6793d2e051f..23af6772f146 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -2151,6 +2151,9 @@ static int resize_stripes(struct r5conf *conf, int newsize)
+ if (!sc)
+ return -ENOMEM;
+
++ /* Need to ensure auto-resizing doesn't interfere */
++ mutex_lock(&conf->cache_size_mutex);
++
+ for (i = conf->max_nr_stripes; i; i--) {
+ nsh = alloc_stripe(sc, GFP_KERNEL);
+ if (!nsh)
+@@ -2167,6 +2170,7 @@ static int resize_stripes(struct r5conf *conf, int newsize)
+ kmem_cache_free(sc, nsh);
+ }
+ kmem_cache_destroy(sc);
++ mutex_unlock(&conf->cache_size_mutex);
+ return -ENOMEM;
+ }
+ /* Step 2 - Must use GFP_NOIO now.
+@@ -2213,6 +2217,7 @@ static int resize_stripes(struct r5conf *conf, int newsize)
+ } else
+ err = -ENOMEM;
+
++ mutex_unlock(&conf->cache_size_mutex);
+ /* Step 4, return new stripes to service */
+ while(!list_empty(&newstripes)) {
+ nsh = list_entry(newstripes.next, struct stripe_head, lru);
+@@ -2240,7 +2245,7 @@ static int resize_stripes(struct r5conf *conf, int newsize)
+ static int drop_one_stripe(struct r5conf *conf)
+ {
+ struct stripe_head *sh;
+- int hash = (conf->max_nr_stripes - 1) % NR_STRIPE_HASH_LOCKS;
++ int hash = (conf->max_nr_stripes - 1) & STRIPE_HASH_LOCKS_MASK;
+
+ spin_lock_irq(conf->hash_locks + hash);
+ sh = get_free_stripe(conf, hash);
+@@ -5846,12 +5851,14 @@ static void raid5d(struct md_thread *thread)
+ pr_debug("%d stripes handled\n", handled);
+
+ spin_unlock_irq(&conf->device_lock);
+- if (test_and_clear_bit(R5_ALLOC_MORE, &conf->cache_state)) {
++ if (test_and_clear_bit(R5_ALLOC_MORE, &conf->cache_state) &&
++ mutex_trylock(&conf->cache_size_mutex)) {
+ grow_one_stripe(conf, __GFP_NOWARN);
+ /* Set flag even if allocation failed. This helps
+ * slow down allocation requests when mem is short
+ */
+ set_bit(R5_DID_ALLOC, &conf->cache_state);
++ mutex_unlock(&conf->cache_size_mutex);
+ }
+
+ async_tx_issue_pending_all();
+@@ -5883,18 +5890,22 @@ raid5_set_cache_size(struct mddev *mddev, int size)
+ return -EINVAL;
+
+ conf->min_nr_stripes = size;
++ mutex_lock(&conf->cache_size_mutex);
+ while (size < conf->max_nr_stripes &&
+ drop_one_stripe(conf))
+ ;
++ mutex_unlock(&conf->cache_size_mutex);
+
+
+ err = md_allow_write(mddev);
+ if (err)
+ return err;
+
++ mutex_lock(&conf->cache_size_mutex);
+ while (size > conf->max_nr_stripes)
+ if (!grow_one_stripe(conf, GFP_KERNEL))
+ break;
++ mutex_unlock(&conf->cache_size_mutex);
+
+ return 0;
+ }
+@@ -6360,11 +6371,19 @@ static unsigned long raid5_cache_scan(struct shrinker *shrink,
+ struct shrink_control *sc)
+ {
+ struct r5conf *conf = container_of(shrink, struct r5conf, shrinker);
+- int ret = 0;
+- while (ret < sc->nr_to_scan) {
+- if (drop_one_stripe(conf) == 0)
+- return SHRINK_STOP;
+- ret++;
++ unsigned long ret = SHRINK_STOP;
++
++ if (mutex_trylock(&conf->cache_size_mutex)) {
++ ret= 0;
++ while (ret < sc->nr_to_scan &&
++ conf->max_nr_stripes > conf->min_nr_stripes) {
++ if (drop_one_stripe(conf) == 0) {
++ ret = SHRINK_STOP;
++ break;
++ }
++ ret++;
++ }
++ mutex_unlock(&conf->cache_size_mutex);
+ }
+ return ret;
+ }
+@@ -6433,6 +6452,7 @@ static struct r5conf *setup_conf(struct mddev *mddev)
+ goto abort;
+ spin_lock_init(&conf->device_lock);
+ seqcount_init(&conf->gen_lock);
++ mutex_init(&conf->cache_size_mutex);
+ init_waitqueue_head(&conf->wait_for_stripe);
+ init_waitqueue_head(&conf->wait_for_overlap);
+ INIT_LIST_HEAD(&conf->handle_list);
+diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
+index 896d603ad0da..03472fbbd882 100644
+--- a/drivers/md/raid5.h
++++ b/drivers/md/raid5.h
+@@ -482,7 +482,8 @@ struct r5conf {
+ */
+ int active_name;
+ char cache_name[2][32];
+- struct kmem_cache *slab_cache; /* for allocating stripes */
++ struct kmem_cache *slab_cache; /* for allocating stripes */
++ struct mutex cache_size_mutex; /* Protect changes to cache size */
+
+ int seq_flush, seq_write;
+ int quiesce;
+diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c
+index a30cc2f7e4f1..ddf59ee5ca40 100644
+--- a/drivers/media/platform/am437x/am437x-vpfe.c
++++ b/drivers/media/platform/am437x/am437x-vpfe.c
+@@ -1185,14 +1185,24 @@ static int vpfe_initialize_device(struct vpfe_device *vpfe)
+ static int vpfe_release(struct file *file)
+ {
+ struct vpfe_device *vpfe = video_drvdata(file);
++ bool fh_singular;
+ int ret;
+
+ mutex_lock(&vpfe->lock);
+
+- if (v4l2_fh_is_singular_file(file))
+- vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev);
++ /* Save the singular status before we call the clean-up helper */
++ fh_singular = v4l2_fh_is_singular_file(file);
++
++ /* the release helper will cleanup any on-going streaming */
+ ret = _vb2_fop_release(file, NULL);
+
++ /*
++ * If this was the last open file.
++ * Then de-initialize hw module.
++ */
++ if (fh_singular)
++ vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev);
++
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+@@ -1577,7 +1587,7 @@ static int vpfe_s_fmt(struct file *file, void *priv,
+ return -EBUSY;
+ }
+
+- ret = vpfe_try_fmt(file, priv, fmt);
++ ret = vpfe_try_fmt(file, priv, &format);
+ if (ret)
+ return ret;
+
+diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
+index 18d0a871747f..947d8be7b245 100644
+--- a/drivers/media/platform/omap3isp/isp.c
++++ b/drivers/media/platform/omap3isp/isp.c
+@@ -829,14 +829,14 @@ static int isp_pipeline_link_notify(struct media_link *link, u32 flags,
+ int ret;
+
+ if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
+- !(link->flags & MEDIA_LNK_FL_ENABLED)) {
++ !(flags & MEDIA_LNK_FL_ENABLED)) {
+ /* Powering off entities is assumed to never fail. */
+ isp_pipeline_pm_power(source, -sink_use);
+ isp_pipeline_pm_power(sink, -source_use);
+ return 0;
+ }
+
+- if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
++ if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH &&
+ (flags & MEDIA_LNK_FL_ENABLED)) {
+
+ ret = isp_pipeline_pm_power(source, sink_use);
+diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
+index f8c5e47a30aa..0aba9ff92102 100644
+--- a/drivers/media/rc/rc-main.c
++++ b/drivers/media/rc/rc-main.c
+@@ -1191,9 +1191,6 @@ static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
+ {
+ struct rc_dev *dev = to_rc_dev(device);
+
+- if (!dev || !dev->input_dev)
+- return -ENODEV;
+-
+ if (dev->rc_map.name)
+ ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name);
+ if (dev->driver_name)
+diff --git a/drivers/memory/tegra/tegra114.c b/drivers/memory/tegra/tegra114.c
+index 511e9a25c151..16c4d26f51e7 100644
+--- a/drivers/memory/tegra/tegra114.c
++++ b/drivers/memory/tegra/tegra114.c
+@@ -935,6 +935,7 @@ static const struct tegra_smmu_soc tegra114_smmu_soc = {
+ .num_swgroups = ARRAY_SIZE(tegra114_swgroups),
+ .supports_round_robin_arbitration = false,
+ .supports_request_limit = false,
++ .num_tlb_lines = 32,
+ .num_asids = 4,
+ .ops = &tegra114_smmu_ops,
+ };
+diff --git a/drivers/memory/tegra/tegra124.c b/drivers/memory/tegra/tegra124.c
+index 278d40b854c1..b153d0b732cf 100644
+--- a/drivers/memory/tegra/tegra124.c
++++ b/drivers/memory/tegra/tegra124.c
+@@ -981,6 +981,7 @@ static const struct tegra_smmu_soc tegra124_smmu_soc = {
+ .num_swgroups = ARRAY_SIZE(tegra124_swgroups),
+ .supports_round_robin_arbitration = true,
+ .supports_request_limit = true,
++ .num_tlb_lines = 32,
+ .num_asids = 128,
+ .ops = &tegra124_smmu_ops,
+ };
+diff --git a/drivers/memory/tegra/tegra30.c b/drivers/memory/tegra/tegra30.c
+index 71fe9376fe53..f422b18f45f3 100644
+--- a/drivers/memory/tegra/tegra30.c
++++ b/drivers/memory/tegra/tegra30.c
+@@ -957,6 +957,7 @@ static const struct tegra_smmu_soc tegra30_smmu_soc = {
+ .num_swgroups = ARRAY_SIZE(tegra30_swgroups),
+ .supports_round_robin_arbitration = false,
+ .supports_request_limit = false,
++ .num_tlb_lines = 16,
+ .num_asids = 4,
+ .ops = &tegra30_smmu_ops,
+ };
+diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
+index 1ef01647265f..4f1b0bdb9cf8 100644
+--- a/drivers/misc/cxl/pci.c
++++ b/drivers/misc/cxl/pci.c
+@@ -778,14 +778,9 @@ int cxl_reset(struct cxl *adapter)
+ {
+ struct pci_dev *dev = to_pci_dev(adapter->dev.parent);
+ int rc;
+- int i;
+- u32 val;
+
+ dev_info(&dev->dev, "CXL reset\n");
+
+- for (i = 0; i < adapter->slices; i++)
+- cxl_remove_afu(adapter->afu[i]);
+-
+ /* pcie_warm_reset requests a fundamental pci reset which includes a
+ * PERST assert/deassert. PERST triggers a loading of the image
+ * if "user" or "factory" is selected in sysfs */
+@@ -794,20 +789,6 @@ int cxl_reset(struct cxl *adapter)
+ return rc;
+ }
+
+- /* the PERST done above fences the PHB. So, reset depends on EEH
+- * to unbind the driver, tell Sapphire to reinit the PHB, and rebind
+- * the driver. Do an mmio read explictly to ensure EEH notices the
+- * fenced PHB. Retry for a few seconds before giving up. */
+- i = 0;
+- while (((val = mmio_read32be(adapter->p1_mmio)) != 0xffffffff) &&
+- (i < 5)) {
+- msleep(500);
+- i++;
+- }
+-
+- if (val != 0xffffffff)
+- dev_err(&dev->dev, "cxl: PERST failed to trigger EEH\n");
+-
+ return rc;
+ }
+
+@@ -1062,8 +1043,6 @@ static int cxl_probe(struct pci_dev *dev, const struct pci_device_id *id)
+ int slice;
+ int rc;
+
+- pci_dev_get(dev);
+-
+ if (cxl_verbose)
+ dump_cxl_config_space(dev);
+
+diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
+index 92e7671426eb..588fb7908642 100644
+--- a/drivers/mmc/core/core.c
++++ b/drivers/mmc/core/core.c
+@@ -330,8 +330,10 @@ EXPORT_SYMBOL(mmc_start_bkops);
+ */
+ static void mmc_wait_data_done(struct mmc_request *mrq)
+ {
+- mrq->host->context_info.is_done_rcv = true;
+- wake_up_interruptible(&mrq->host->context_info.wait);
++ struct mmc_context_info *context_info = &mrq->host->context_info;
++
++ context_info->is_done_rcv = true;
++ wake_up_interruptible(&context_info->wait);
+ }
+
+ static void mmc_wait_done(struct mmc_request *mrq)
+diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
+index 7a3fc16d0a6c..53cfc7cedefe 100644
+--- a/drivers/mmc/host/sdhci-pci.c
++++ b/drivers/mmc/host/sdhci-pci.c
+@@ -549,6 +549,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
+ static const struct sdhci_pci_fixes sdhci_o2 = {
+ .probe = sdhci_pci_o2_probe,
+ .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
++ .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
+ .probe_slot = sdhci_pci_o2_probe_slot,
+ .resume = sdhci_pci_o2_resume,
+ };
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index bec8a307f8cd..fd41b91436ec 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -1146,6 +1146,7 @@ static u16 sdhci_get_preset_value(struct sdhci_host *host)
+ preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104);
+ break;
+ case MMC_TIMING_UHS_DDR50:
++ case MMC_TIMING_MMC_DDR52:
+ preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50);
+ break;
+ case MMC_TIMING_MMC_HS400:
+@@ -1598,7 +1599,8 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
+ (ios->timing == MMC_TIMING_UHS_SDR25) ||
+ (ios->timing == MMC_TIMING_UHS_SDR50) ||
+ (ios->timing == MMC_TIMING_UHS_SDR104) ||
+- (ios->timing == MMC_TIMING_UHS_DDR50))) {
++ (ios->timing == MMC_TIMING_UHS_DDR50) ||
++ (ios->timing == MMC_TIMING_MMC_DDR52))) {
+ u16 preset;
+
+ sdhci_enable_preset_value(host, true);
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index d5fe5d5f490f..16d87bf8ac3c 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -625,6 +625,23 @@ static void bond_set_dev_addr(struct net_device *bond_dev,
+ call_netdevice_notifiers(NETDEV_CHANGEADDR, bond_dev);
+ }
+
++static struct slave *bond_get_old_active(struct bonding *bond,
++ struct slave *new_active)
++{
++ struct slave *slave;
++ struct list_head *iter;
++
++ bond_for_each_slave(bond, slave, iter) {
++ if (slave == new_active)
++ continue;
++
++ if (ether_addr_equal(bond->dev->dev_addr, slave->dev->dev_addr))
++ return slave;
++ }
++
++ return NULL;
++}
++
+ /* bond_do_fail_over_mac
+ *
+ * Perform special MAC address swapping for fail_over_mac settings
+@@ -652,6 +669,9 @@ static void bond_do_fail_over_mac(struct bonding *bond,
+ if (!new_active)
+ return;
+
++ if (!old_active)
++ old_active = bond_get_old_active(bond, new_active);
++
+ if (old_active) {
+ ether_addr_copy(tmp_mac, new_active->dev->dev_addr);
+ ether_addr_copy(saddr.sa_data,
+@@ -1902,6 +1922,7 @@ static int bond_release_and_destroy(struct net_device *bond_dev,
+ bond_dev->priv_flags |= IFF_DISABLE_NETPOLL;
+ netdev_info(bond_dev, "Destroying bond %s\n",
+ bond_dev->name);
++ bond_remove_proc_entry(bond);
+ unregister_netdevice(bond_dev);
+ }
+ return ret;
+diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
+index 069952fa5d64..0d8af5bb5907 100644
+--- a/drivers/net/ethernet/broadcom/tg3.c
++++ b/drivers/net/ethernet/broadcom/tg3.c
+@@ -10757,7 +10757,7 @@ static ssize_t tg3_show_temp(struct device *dev,
+ tg3_ape_scratchpad_read(tp, &temperature, attr->index,
+ sizeof(temperature));
+ spin_unlock_bh(&tp->lock);
+- return sprintf(buf, "%u\n", temperature);
++ return sprintf(buf, "%u\n", temperature * 1000);
+ }
+
+
+diff --git a/drivers/net/ethernet/brocade/bna/bnad.c b/drivers/net/ethernet/brocade/bna/bnad.c
+index caae6cb2bc1a..a1c30ee60888 100644
+--- a/drivers/net/ethernet/brocade/bna/bnad.c
++++ b/drivers/net/ethernet/brocade/bna/bnad.c
+@@ -675,6 +675,7 @@ bnad_cq_process(struct bnad *bnad, struct bna_ccb *ccb, int budget)
+ if (!next_cmpl->valid)
+ break;
+ }
++ packets++;
+
+ /* TODO: BNA_CQ_EF_LOCAL ? */
+ if (unlikely(flags & (BNA_CQ_EF_MAC_ERROR |
+@@ -691,7 +692,6 @@ bnad_cq_process(struct bnad *bnad, struct bna_ccb *ccb, int budget)
+ else
+ bnad_cq_setup_skb_frags(rcb, skb, sop_ci, nvecs, len);
+
+- packets++;
+ rcb->rxq->rx_packets++;
+ rcb->rxq->rx_bytes += totlen;
+ ccb->bytes_per_intr += totlen;
+diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_main.c b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
+index c754b2027281..c9da1b5d4804 100644
+--- a/drivers/net/ethernet/intel/fm10k/fm10k_main.c
++++ b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
+@@ -216,7 +216,7 @@ static void fm10k_reuse_rx_page(struct fm10k_ring *rx_ring,
+
+ static inline bool fm10k_page_is_reserved(struct page *page)
+ {
+- return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc;
++ return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page);
+ }
+
+ static bool fm10k_can_reuse_rx_page(struct fm10k_rx_buffer *rx_buffer,
+diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
+index c2bd4f98a837..212d668dabb3 100644
+--- a/drivers/net/ethernet/intel/igb/igb.h
++++ b/drivers/net/ethernet/intel/igb/igb.h
+@@ -540,6 +540,7 @@ void igb_ptp_rx_pktstamp(struct igb_q_vector *q_vector, unsigned char *va,
+ struct sk_buff *skb);
+ int igb_ptp_set_ts_config(struct net_device *netdev, struct ifreq *ifr);
+ int igb_ptp_get_ts_config(struct net_device *netdev, struct ifreq *ifr);
++void igb_set_flag_queue_pairs(struct igb_adapter *, const u32);
+ #ifdef CONFIG_IGB_HWMON
+ void igb_sysfs_exit(struct igb_adapter *adapter);
+ int igb_sysfs_init(struct igb_adapter *adapter);
+diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c
+index d5673eb90c54..0afc0913e5b9 100644
+--- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
++++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
+@@ -2991,6 +2991,7 @@ static int igb_set_channels(struct net_device *netdev,
+ {
+ struct igb_adapter *adapter = netdev_priv(netdev);
+ unsigned int count = ch->combined_count;
++ unsigned int max_combined = 0;
+
+ /* Verify they are not requesting separate vectors */
+ if (!count || ch->rx_count || ch->tx_count)
+@@ -3001,11 +3002,13 @@ static int igb_set_channels(struct net_device *netdev,
+ return -EINVAL;
+
+ /* Verify the number of channels doesn't exceed hw limits */
+- if (count > igb_max_channels(adapter))
++ max_combined = igb_max_channels(adapter);
++ if (count > max_combined)
+ return -EINVAL;
+
+ if (count != adapter->rss_queues) {
+ adapter->rss_queues = count;
++ igb_set_flag_queue_pairs(adapter, max_combined);
+
+ /* Hardware has to reinitialize queues and interrupts to
+ * match the new configuration.
+diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
+index a0a9b1fcb5e8..4f6bf996851e 100644
+--- a/drivers/net/ethernet/intel/igb/igb_main.c
++++ b/drivers/net/ethernet/intel/igb/igb_main.c
+@@ -1205,10 +1205,14 @@ static int igb_alloc_q_vector(struct igb_adapter *adapter,
+
+ /* allocate q_vector and rings */
+ q_vector = adapter->q_vector[v_idx];
+- if (!q_vector)
++ if (!q_vector) {
+ q_vector = kzalloc(size, GFP_KERNEL);
+- else
++ } else if (size > ksize(q_vector)) {
++ kfree_rcu(q_vector, rcu);
++ q_vector = kzalloc(size, GFP_KERNEL);
++ } else {
+ memset(q_vector, 0, size);
++ }
+ if (!q_vector)
+ return -ENOMEM;
+
+@@ -2901,6 +2905,14 @@ static void igb_init_queue_configuration(struct igb_adapter *adapter)
+
+ adapter->rss_queues = min_t(u32, max_rss_queues, num_online_cpus());
+
++ igb_set_flag_queue_pairs(adapter, max_rss_queues);
++}
++
++void igb_set_flag_queue_pairs(struct igb_adapter *adapter,
++ const u32 max_rss_queues)
++{
++ struct e1000_hw *hw = &adapter->hw;
++
+ /* Determine if we need to pair queues. */
+ switch (hw->mac.type) {
+ case e1000_82575:
+@@ -6584,7 +6596,7 @@ static void igb_reuse_rx_page(struct igb_ring *rx_ring,
+
+ static inline bool igb_page_is_reserved(struct page *page)
+ {
+- return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc;
++ return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page);
+ }
+
+ static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer,
+diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+index 5be12a00e1f4..463ff47200f1 100644
+--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+@@ -1829,7 +1829,7 @@ static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring,
+
+ static inline bool ixgbe_page_is_reserved(struct page *page)
+ {
+- return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc;
++ return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page);
+ }
+
+ /**
+diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+index e71cdde9cb01..1d7b00b038a2 100644
+--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
++++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+@@ -765,7 +765,7 @@ static void ixgbevf_reuse_rx_page(struct ixgbevf_ring *rx_ring,
+
+ static inline bool ixgbevf_page_is_reserved(struct page *page)
+ {
+- return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc;
++ return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page);
+ }
+
+ /**
+diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
+index 2619c9fbf42d..983b1d51244d 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
++++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
+@@ -573,7 +573,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
+ continue;
+ mlx4_dbg(dev, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN to slave: %d, port:%d\n",
+ __func__, i, port);
+- s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
++ s_info = &priv->mfunc.master.vf_oper[i].vport[port].state;
+ if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state) {
+ eqe->event.port_change.port =
+ cpu_to_be32(
+@@ -608,7 +608,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
+ continue;
+ if (i == mlx4_master_func_num(dev))
+ continue;
+- s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
++ s_info = &priv->mfunc.master.vf_oper[i].vport[port].state;
+ if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state) {
+ eqe->event.port_change.port =
+ cpu_to_be32(
+diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
+index cf98cc9bbc8d..73b6fc21ea00 100644
+--- a/drivers/net/ethernet/rocker/rocker.c
++++ b/drivers/net/ethernet/rocker/rocker.c
+@@ -4587,6 +4587,7 @@ static void rocker_remove_ports(struct rocker *rocker)
+ rocker_port = rocker->ports[i];
+ rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
+ unregister_netdev(rocker_port->dev);
++ free_netdev(rocker_port->dev);
+ }
+ kfree(rocker->ports);
+ }
+diff --git a/drivers/net/ethernet/stmicro/stmmac/descs.h b/drivers/net/ethernet/stmicro/stmmac/descs.h
+index ad3996038018..799c2929c536 100644
+--- a/drivers/net/ethernet/stmicro/stmmac/descs.h
++++ b/drivers/net/ethernet/stmicro/stmmac/descs.h
+@@ -158,6 +158,8 @@ struct dma_desc {
+ u32 buffer2_size:13;
+ u32 reserved4:3;
+ } etx; /* -- enhanced -- */
++
++ u64 all_flags;
+ } des01;
+ unsigned int des2;
+ unsigned int des3;
+diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+index 6249a4ec08f0..573708123338 100644
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+@@ -38,7 +38,6 @@ struct rk_priv_data {
+ bool clock_input;
+
+ struct clk *clk_mac;
+- struct clk *clk_mac_pll;
+ struct clk *gmac_clkin;
+ struct clk *mac_clk_rx;
+ struct clk *mac_clk_tx;
+@@ -208,7 +207,7 @@ static int gmac_clk_init(struct rk_priv_data *bsp_priv)
+ dev_info(dev, "%s: clock input from PHY\n", __func__);
+ } else {
+ if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII)
+- clk_set_rate(bsp_priv->clk_mac_pll, 50000000);
++ clk_set_rate(bsp_priv->clk_mac, 50000000);
+ }
+
+ return 0;
+diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
+index 1e2bcf5f89e1..7d944449f5ef 100644
+--- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
++++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
+@@ -240,6 +240,7 @@ static int enh_desc_get_rx_status(void *data, struct stmmac_extra_stats *x,
+ static void enh_desc_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
+ int mode, int end)
+ {
++ p->des01.all_flags = 0;
+ p->des01.erx.own = 1;
+ p->des01.erx.buffer1_size = BUF_SIZE_8KiB - 1;
+
+@@ -254,7 +255,7 @@ static void enh_desc_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
+
+ static void enh_desc_init_tx_desc(struct dma_desc *p, int mode, int end)
+ {
+- p->des01.etx.own = 0;
++ p->des01.all_flags = 0;
+ if (mode == STMMAC_CHAIN_MODE)
+ ehn_desc_tx_set_on_chain(p, end);
+ else
+diff --git a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
+index 35ad4f427ae2..48c3456445b2 100644
+--- a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
++++ b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
+@@ -123,6 +123,7 @@ static int ndesc_get_rx_status(void *data, struct stmmac_extra_stats *x,
+ static void ndesc_init_rx_desc(struct dma_desc *p, int disable_rx_ic, int mode,
+ int end)
+ {
++ p->des01.all_flags = 0;
+ p->des01.rx.own = 1;
+ p->des01.rx.buffer1_size = BUF_SIZE_2KiB - 1;
+
+@@ -137,7 +138,7 @@ static void ndesc_init_rx_desc(struct dma_desc *p, int disable_rx_ic, int mode,
+
+ static void ndesc_init_tx_desc(struct dma_desc *p, int mode, int end)
+ {
+- p->des01.tx.own = 0;
++ p->des01.all_flags = 0;
+ if (mode == STMMAC_CHAIN_MODE)
+ ndesc_tx_set_on_chain(p, end);
+ else
+diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+index 2c5ce2baca87..c274cdc5df1e 100644
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -829,8 +829,11 @@ static int stmmac_init_phy(struct net_device *dev)
+
+ phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link, interface);
+
+- if (IS_ERR(phydev)) {
++ if (IS_ERR_OR_NULL(phydev)) {
+ pr_err("%s: Could not attach to PHY\n", dev->name);
++ if (!phydev)
++ return -ENODEV;
++
+ return PTR_ERR(phydev);
+ }
+
+@@ -1189,41 +1192,41 @@ static int alloc_dma_desc_resources(struct stmmac_priv *priv)
+ goto err_tx_skbuff;
+
+ if (priv->extend_desc) {
+- priv->dma_erx = dma_alloc_coherent(priv->device, rxsize *
+- sizeof(struct
+- dma_extended_desc),
+- &priv->dma_rx_phy,
+- GFP_KERNEL);
++ priv->dma_erx = dma_zalloc_coherent(priv->device, rxsize *
++ sizeof(struct
++ dma_extended_desc),
++ &priv->dma_rx_phy,
++ GFP_KERNEL);
+ if (!priv->dma_erx)
+ goto err_dma;
+
+- priv->dma_etx = dma_alloc_coherent(priv->device, txsize *
+- sizeof(struct
+- dma_extended_desc),
+- &priv->dma_tx_phy,
+- GFP_KERNEL);
++ priv->dma_etx = dma_zalloc_coherent(priv->device, txsize *
++ sizeof(struct
++ dma_extended_desc),
++ &priv->dma_tx_phy,
++ GFP_KERNEL);
+ if (!priv->dma_etx) {
+ dma_free_coherent(priv->device, priv->dma_rx_size *
+- sizeof(struct dma_extended_desc),
+- priv->dma_erx, priv->dma_rx_phy);
++ sizeof(struct dma_extended_desc),
++ priv->dma_erx, priv->dma_rx_phy);
+ goto err_dma;
+ }
+ } else {
+- priv->dma_rx = dma_alloc_coherent(priv->device, rxsize *
+- sizeof(struct dma_desc),
+- &priv->dma_rx_phy,
+- GFP_KERNEL);
++ priv->dma_rx = dma_zalloc_coherent(priv->device, rxsize *
++ sizeof(struct dma_desc),
++ &priv->dma_rx_phy,
++ GFP_KERNEL);
+ if (!priv->dma_rx)
+ goto err_dma;
+
+- priv->dma_tx = dma_alloc_coherent(priv->device, txsize *
+- sizeof(struct dma_desc),
+- &priv->dma_tx_phy,
+- GFP_KERNEL);
++ priv->dma_tx = dma_zalloc_coherent(priv->device, txsize *
++ sizeof(struct dma_desc),
++ &priv->dma_tx_phy,
++ GFP_KERNEL);
+ if (!priv->dma_tx) {
+ dma_free_coherent(priv->device, priv->dma_rx_size *
+- sizeof(struct dma_desc),
+- priv->dma_rx, priv->dma_rx_phy);
++ sizeof(struct dma_desc),
++ priv->dma_rx, priv->dma_rx_phy);
+ goto err_dma;
+ }
+ }
+diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
+index 63c7810e1545..7fbca37a1adf 100644
+--- a/drivers/net/virtio_net.c
++++ b/drivers/net/virtio_net.c
+@@ -1828,7 +1828,8 @@ static int virtnet_probe(struct virtio_device *vdev)
+ else
+ vi->hdr_len = sizeof(struct virtio_net_hdr);
+
+- if (virtio_has_feature(vdev, VIRTIO_F_ANY_LAYOUT))
++ if (virtio_has_feature(vdev, VIRTIO_F_ANY_LAYOUT) ||
++ virtio_has_feature(vdev, VIRTIO_F_VERSION_1))
+ vi->any_header_sg = true;
+
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ))
+diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
+index 23806c243a53..fd4a5353d216 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
+@@ -321,6 +321,7 @@ static struct usb_device_id rtl8192c_usb_ids[] = {
+ {RTL_USB_DEVICE(0x07b8, 0x8188, rtl92cu_hal_cfg)}, /*Abocom - Abocom*/
+ {RTL_USB_DEVICE(0x07b8, 0x8189, rtl92cu_hal_cfg)}, /*Funai - Abocom*/
+ {RTL_USB_DEVICE(0x0846, 0x9041, rtl92cu_hal_cfg)}, /*NetGear WNA1000M*/
++ {RTL_USB_DEVICE(0x0846, 0x9043, rtl92cu_hal_cfg)}, /*NG WNA1000Mv2*/
+ {RTL_USB_DEVICE(0x0b05, 0x17ba, rtl92cu_hal_cfg)}, /*ASUS-Edimax*/
+ {RTL_USB_DEVICE(0x0bda, 0x5088, rtl92cu_hal_cfg)}, /*Thinkware-CC&C*/
+ {RTL_USB_DEVICE(0x0df6, 0x0052, rtl92cu_hal_cfg)}, /*Sitecom - Edimax*/
+diff --git a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+index 57966e3c8e8d..3fa2fb7c8e4e 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+@@ -2180,7 +2180,7 @@ static int _rtl8821ae_set_media_status(struct ieee80211_hw *hw,
+
+ rtl_write_byte(rtlpriv, MSR, bt_msr);
+ rtlpriv->cfg->ops->led_control(hw, ledaction);
+- if ((bt_msr & 0xfc) == MSR_AP)
++ if ((bt_msr & MSR_MASK) == MSR_AP)
+ rtl_write_byte(rtlpriv, REG_BCNTCFG + 1, 0x00);
+ else
+ rtl_write_byte(rtlpriv, REG_BCNTCFG + 1, 0x66);
+diff --git a/drivers/net/wireless/rtlwifi/rtl8821ae/reg.h b/drivers/net/wireless/rtlwifi/rtl8821ae/reg.h
+index 53668fc8f23e..1d6110f9c1fb 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8821ae/reg.h
++++ b/drivers/net/wireless/rtlwifi/rtl8821ae/reg.h
+@@ -429,6 +429,7 @@
+ #define MSR_ADHOC 0x01
+ #define MSR_INFRA 0x02
+ #define MSR_AP 0x03
++#define MSR_MASK 0x03
+
+ #define RRSR_RSC_OFFSET 21
+ #define RRSR_SHORT_OFFSET 23
+diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
+index 0d2594395ffb..0866c5dfdf87 100644
+--- a/drivers/net/xen-netback/netback.c
++++ b/drivers/net/xen-netback/netback.c
+@@ -1571,13 +1571,13 @@ static inline void xenvif_tx_dealloc_action(struct xenvif_queue *queue)
+ smp_rmb();
+
+ while (dc != dp) {
+- BUG_ON(gop - queue->tx_unmap_ops > MAX_PENDING_REQS);
++ BUG_ON(gop - queue->tx_unmap_ops >= MAX_PENDING_REQS);
+ pending_idx =
+ queue->dealloc_ring[pending_index(dc++)];
+
+- pending_idx_release[gop-queue->tx_unmap_ops] =
++ pending_idx_release[gop - queue->tx_unmap_ops] =
+ pending_idx;
+- queue->pages_to_unmap[gop-queue->tx_unmap_ops] =
++ queue->pages_to_unmap[gop - queue->tx_unmap_ops] =
+ queue->mmap_pages[pending_idx];
+ gnttab_set_unmap_op(gop,
+ idx_to_kaddr(queue, pending_idx),
+diff --git a/drivers/nfc/st21nfca/st21nfca.c b/drivers/nfc/st21nfca/st21nfca.c
+index d251f7229c4e..051286562fab 100644
+--- a/drivers/nfc/st21nfca/st21nfca.c
++++ b/drivers/nfc/st21nfca/st21nfca.c
+@@ -148,14 +148,14 @@ static int st21nfca_hci_load_session(struct nfc_hci_dev *hdev)
+ ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_DEVICE_MGNT_PIPE);
+ if (r < 0)
+- goto free_info;
++ return r;
+
+ /* Get pipe list */
+ r = nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_DM_GETINFO, pipe_list, sizeof(pipe_list),
+ &skb_pipe_list);
+ if (r < 0)
+- goto free_info;
++ return r;
+
+ /* Complete the existing gate_pipe table */
+ for (i = 0; i < skb_pipe_list->len; i++) {
+@@ -181,6 +181,7 @@ static int st21nfca_hci_load_session(struct nfc_hci_dev *hdev)
+ info->src_host_id != ST21NFCA_ESE_HOST_ID) {
+ pr_err("Unexpected apdu_reader pipe on host %x\n",
+ info->src_host_id);
++ kfree_skb(skb_pipe_info);
+ continue;
+ }
+
+@@ -200,6 +201,7 @@ static int st21nfca_hci_load_session(struct nfc_hci_dev *hdev)
+ hdev->pipes[st21nfca_gates[j].pipe].dest_host =
+ info->src_host_id;
+ }
++ kfree_skb(skb_pipe_info);
+ }
+
+ /*
+@@ -214,13 +216,12 @@ static int st21nfca_hci_load_session(struct nfc_hci_dev *hdev)
+ st21nfca_gates[i].gate,
+ st21nfca_gates[i].pipe);
+ if (r < 0)
+- goto free_info;
++ goto free_list;
+ }
+ }
+
+ memcpy(hdev->init_data.gates, st21nfca_gates, sizeof(st21nfca_gates));
+-free_info:
+- kfree_skb(skb_pipe_info);
++free_list:
+ kfree_skb(skb_pipe_list);
+ return r;
+ }
+diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
+index cde35c5d0191..d91f721a05b6 100644
+--- a/drivers/of/fdt.c
++++ b/drivers/of/fdt.c
+@@ -955,7 +955,9 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
+ }
+
+ #ifdef CONFIG_HAVE_MEMBLOCK
+-#define MAX_PHYS_ADDR ((phys_addr_t)~0)
++#ifndef MAX_MEMBLOCK_ADDR
++#define MAX_MEMBLOCK_ADDR ((phys_addr_t)~0)
++#endif
+
+ void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
+ {
+@@ -972,16 +974,16 @@ void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
+ }
+ size &= PAGE_MASK;
+
+- if (base > MAX_PHYS_ADDR) {
++ if (base > MAX_MEMBLOCK_ADDR) {
+ pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
+ base, base + size);
+ return;
+ }
+
+- if (base + size - 1 > MAX_PHYS_ADDR) {
++ if (base + size - 1 > MAX_MEMBLOCK_ADDR) {
+ pr_warning("Ignoring memory range 0x%llx - 0x%llx\n",
+- ((u64)MAX_PHYS_ADDR) + 1, base + size);
+- size = MAX_PHYS_ADDR - base + 1;
++ ((u64)MAX_MEMBLOCK_ADDR) + 1, base + size);
++ size = MAX_MEMBLOCK_ADDR - base + 1;
+ }
+
+ if (base + size < phys_offset) {
+diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
+index dceb9ddfd99a..a32c1f6c252c 100644
+--- a/drivers/parisc/lba_pci.c
++++ b/drivers/parisc/lba_pci.c
+@@ -1556,8 +1556,11 @@ lba_driver_probe(struct parisc_device *dev)
+ if (lba_dev->hba.lmmio_space.flags)
+ pci_add_resource_offset(&resources, &lba_dev->hba.lmmio_space,
+ lba_dev->hba.lmmio_space_offset);
+- if (lba_dev->hba.gmmio_space.flags)
+- pci_add_resource(&resources, &lba_dev->hba.gmmio_space);
++ if (lba_dev->hba.gmmio_space.flags) {
++ /* pci_add_resource(&resources, &lba_dev->hba.gmmio_space); */
++ pr_warn("LBA: Not registering GMMIO space %pR\n",
++ &lba_dev->hba.gmmio_space);
++ }
+
+ pci_add_resource(&resources, &lba_dev->hba.bus_num);
+
+diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
+index 944f50015ed0..73de4efcbe6e 100644
+--- a/drivers/pci/Kconfig
++++ b/drivers/pci/Kconfig
+@@ -2,7 +2,7 @@
+ # PCI configuration
+ #
+ config PCI_BUS_ADDR_T_64BIT
+- def_bool y if (ARCH_DMA_ADDR_T_64BIT || (64BIT && !PARISC))
++ def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT)
+ depends on PCI
+
+ config PCI_MSI
+diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
+index 2f797cb7e205..774781450885 100644
+--- a/drivers/pinctrl/pinctrl-at91.c
++++ b/drivers/pinctrl/pinctrl-at91.c
+@@ -320,6 +320,9 @@ static const struct pinctrl_ops at91_pctrl_ops = {
+ static void __iomem *pin_to_controller(struct at91_pinctrl *info,
+ unsigned int bank)
+ {
++ if (!gpio_chips[bank])
++ return NULL;
++
+ return gpio_chips[bank]->regbase;
+ }
+
+@@ -729,6 +732,10 @@ static int at91_pmx_set(struct pinctrl_dev *pctldev, unsigned selector,
+ pin = &pins_conf[i];
+ at91_pin_dbg(info->dev, pin);
+ pio = pin_to_controller(info, pin->bank);
++
++ if (!pio)
++ continue;
++
+ mask = pin_to_mask(pin->pin);
+ at91_mux_disable_interrupt(pio, mask);
+ switch (pin->mux) {
+@@ -848,6 +855,10 @@ static int at91_pinconf_get(struct pinctrl_dev *pctldev,
+ *config = 0;
+ dev_dbg(info->dev, "%s:%d, pin_id=%d", __func__, __LINE__, pin_id);
+ pio = pin_to_controller(info, pin_to_bank(pin_id));
++
++ if (!pio)
++ return -EINVAL;
++
+ pin = pin_id % MAX_NB_GPIO_PER_BANK;
+
+ if (at91_mux_get_multidrive(pio, pin))
+@@ -889,6 +900,10 @@ static int at91_pinconf_set(struct pinctrl_dev *pctldev,
+ "%s:%d, pin_id=%d, config=0x%lx",
+ __func__, __LINE__, pin_id, config);
+ pio = pin_to_controller(info, pin_to_bank(pin_id));
++
++ if (!pio)
++ return -EINVAL;
++
+ pin = pin_id % MAX_NB_GPIO_PER_BANK;
+ mask = pin_to_mask(pin);
+
+diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
+index cb7cd8d79329..cd78f1166b33 100644
+--- a/drivers/platform/x86/ideapad-laptop.c
++++ b/drivers/platform/x86/ideapad-laptop.c
+@@ -852,6 +852,13 @@ static const struct dmi_system_id no_hw_rfkill_list[] = {
+ },
+ },
+ {
++ .ident = "Lenovo Yoga 3 14",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 3 14"),
++ },
++ },
++ {
+ .ident = "Lenovo Yoga 3 Pro 1370",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c
+index 4337c3bc6ace..afea84c7a155 100644
+--- a/drivers/rtc/rtc-abx80x.c
++++ b/drivers/rtc/rtc-abx80x.c
+@@ -28,7 +28,7 @@
+ #define ABX8XX_REG_WD 0x07
+
+ #define ABX8XX_REG_CTRL1 0x10
+-#define ABX8XX_CTRL_WRITE BIT(1)
++#define ABX8XX_CTRL_WRITE BIT(0)
+ #define ABX8XX_CTRL_12_24 BIT(6)
+
+ #define ABX8XX_REG_CFG_KEY 0x1f
+diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
+index 76cbad7a99d3..c5a2523b0185 100644
+--- a/drivers/rtc/rtc-s3c.c
++++ b/drivers/rtc/rtc-s3c.c
+@@ -39,6 +39,7 @@ struct s3c_rtc {
+ void __iomem *base;
+ struct clk *rtc_clk;
+ struct clk *rtc_src_clk;
++ bool clk_disabled;
+
+ struct s3c_rtc_data *data;
+
+@@ -71,9 +72,12 @@ static void s3c_rtc_enable_clk(struct s3c_rtc *info)
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&info->alarm_clk_lock, irq_flags);
+- clk_enable(info->rtc_clk);
+- if (info->data->needs_src_clk)
+- clk_enable(info->rtc_src_clk);
++ if (info->clk_disabled) {
++ clk_enable(info->rtc_clk);
++ if (info->data->needs_src_clk)
++ clk_enable(info->rtc_src_clk);
++ info->clk_disabled = false;
++ }
+ spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags);
+ }
+
+@@ -82,9 +86,12 @@ static void s3c_rtc_disable_clk(struct s3c_rtc *info)
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&info->alarm_clk_lock, irq_flags);
+- if (info->data->needs_src_clk)
+- clk_disable(info->rtc_src_clk);
+- clk_disable(info->rtc_clk);
++ if (!info->clk_disabled) {
++ if (info->data->needs_src_clk)
++ clk_disable(info->rtc_src_clk);
++ clk_disable(info->rtc_clk);
++ info->clk_disabled = true;
++ }
+ spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags);
+ }
+
+@@ -128,6 +135,11 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled)
+
+ s3c_rtc_disable_clk(info);
+
++ if (enabled)
++ s3c_rtc_enable_clk(info);
++ else
++ s3c_rtc_disable_clk(info);
++
+ return 0;
+ }
+
+diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
+index 8c70d785ba73..ab60287ee72d 100644
+--- a/drivers/rtc/rtc-s5m.c
++++ b/drivers/rtc/rtc-s5m.c
+@@ -635,6 +635,16 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
+ case S2MPS13X:
+ data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
+ ret = regmap_write(info->regmap, info->regs->ctrl, data[0]);
++ if (ret < 0)
++ break;
++
++ /*
++ * Should set WUDR & (RUDR or AUDR) bits to high after writing
++ * RTC_CTRL register like writing Alarm registers. We can't find
++ * the description from datasheet but vendor code does that
++ * really.
++ */
++ ret = s5m8767_rtc_set_alarm_reg(info);
+ break;
+
+ default:
+diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
+index 94e909c5a503..00d18c2bdb0f 100644
+--- a/fs/btrfs/transaction.c
++++ b/fs/btrfs/transaction.c
+@@ -1875,8 +1875,11 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
+ spin_unlock(&root->fs_info->trans_lock);
+
+ wait_for_commit(root, prev_trans);
++ ret = prev_trans->aborted;
+
+ btrfs_put_transaction(prev_trans);
++ if (ret)
++ goto cleanup_transaction;
+ } else {
+ spin_unlock(&root->fs_info->trans_lock);
+ }
+diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
+index 8b7898b7670f..64a9bca976d0 100644
+--- a/fs/cifs/ioctl.c
++++ b/fs/cifs/ioctl.c
+@@ -67,6 +67,12 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
+ goto out_drop_write;
+ }
+
++ if (src_file.file->f_op->unlocked_ioctl != cifs_ioctl) {
++ rc = -EBADF;
++ cifs_dbg(VFS, "src file seems to be from a different filesystem type\n");
++ goto out_fput;
++ }
++
+ if ((!src_file.file->private_data) || (!dst_file->private_data)) {
+ rc = -EBADF;
+ cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
+diff --git a/fs/coredump.c b/fs/coredump.c
+index bbbe139ab280..8dd099dc5f9b 100644
+--- a/fs/coredump.c
++++ b/fs/coredump.c
+@@ -506,10 +506,10 @@ void do_coredump(const siginfo_t *siginfo)
+ const struct cred *old_cred;
+ struct cred *cred;
+ int retval = 0;
+- int flag = 0;
+ int ispipe;
+ struct files_struct *displaced;
+- bool need_nonrelative = false;
++ /* require nonrelative corefile path and be extra careful */
++ bool need_suid_safe = false;
+ bool core_dumped = false;
+ static atomic_t core_dump_count = ATOMIC_INIT(0);
+ struct coredump_params cprm = {
+@@ -543,9 +543,8 @@ void do_coredump(const siginfo_t *siginfo)
+ */
+ if (__get_dumpable(cprm.mm_flags) == SUID_DUMP_ROOT) {
+ /* Setuid core dump mode */
+- flag = O_EXCL; /* Stop rewrite attacks */
+ cred->fsuid = GLOBAL_ROOT_UID; /* Dump root private */
+- need_nonrelative = true;
++ need_suid_safe = true;
+ }
+
+ retval = coredump_wait(siginfo->si_signo, &core_state);
+@@ -626,7 +625,7 @@ void do_coredump(const siginfo_t *siginfo)
+ if (cprm.limit < binfmt->min_coredump)
+ goto fail_unlock;
+
+- if (need_nonrelative && cn.corename[0] != '/') {
++ if (need_suid_safe && cn.corename[0] != '/') {
+ printk(KERN_WARNING "Pid %d(%s) can only dump core "\
+ "to fully qualified path!\n",
+ task_tgid_vnr(current), current->comm);
+@@ -634,8 +633,35 @@ void do_coredump(const siginfo_t *siginfo)
+ goto fail_unlock;
+ }
+
++ /*
++ * Unlink the file if it exists unless this is a SUID
++ * binary - in that case, we're running around with root
++ * privs and don't want to unlink another user's coredump.
++ */
++ if (!need_suid_safe) {
++ mm_segment_t old_fs;
++
++ old_fs = get_fs();
++ set_fs(KERNEL_DS);
++ /*
++ * If it doesn't exist, that's fine. If there's some
++ * other problem, we'll catch it at the filp_open().
++ */
++ (void) sys_unlink((const char __user *)cn.corename);
++ set_fs(old_fs);
++ }
++
++ /*
++ * There is a race between unlinking and creating the
++ * file, but if that causes an EEXIST here, that's
++ * fine - another process raced with us while creating
++ * the corefile, and the other process won. To userspace,
++ * what matters is that at least one of the two processes
++ * writes its coredump successfully, not which one.
++ */
+ cprm.file = filp_open(cn.corename,
+- O_CREAT | 2 | O_NOFOLLOW | O_LARGEFILE | flag,
++ O_CREAT | 2 | O_NOFOLLOW |
++ O_LARGEFILE | O_EXCL,
+ 0600);
+ if (IS_ERR(cprm.file))
+ goto fail_unlock;
+@@ -652,11 +678,15 @@ void do_coredump(const siginfo_t *siginfo)
+ if (!S_ISREG(inode->i_mode))
+ goto close_fail;
+ /*
+- * Dont allow local users get cute and trick others to coredump
+- * into their pre-created files.
++ * Don't dump core if the filesystem changed owner or mode
++ * of the file during file creation. This is an issue when
++ * a process dumps core while its cwd is e.g. on a vfat
++ * filesystem.
+ */
+ if (!uid_eq(inode->i_uid, current_fsuid()))
+ goto close_fail;
++ if ((inode->i_mode & 0677) != 0600)
++ goto close_fail;
+ if (!(cprm.file->f_mode & FMODE_CAN_WRITE))
+ goto close_fail;
+ if (do_truncate(cprm.file->f_path.dentry, 0, 0, cprm.file))
+diff --git a/fs/ecryptfs/dentry.c b/fs/ecryptfs/dentry.c
+index 8db0b464483f..63cd2c147221 100644
+--- a/fs/ecryptfs/dentry.c
++++ b/fs/ecryptfs/dentry.c
+@@ -45,20 +45,20 @@
+ static int ecryptfs_d_revalidate(struct dentry *dentry, unsigned int flags)
+ {
+ struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
+- int rc;
+-
+- if (!(lower_dentry->d_flags & DCACHE_OP_REVALIDATE))
+- return 1;
++ int rc = 1;
+
+ if (flags & LOOKUP_RCU)
+ return -ECHILD;
+
+- rc = lower_dentry->d_op->d_revalidate(lower_dentry, flags);
++ if (lower_dentry->d_flags & DCACHE_OP_REVALIDATE)
++ rc = lower_dentry->d_op->d_revalidate(lower_dentry, flags);
++
+ if (d_really_is_positive(dentry)) {
+- struct inode *lower_inode =
+- ecryptfs_inode_to_lower(d_inode(dentry));
++ struct inode *inode = d_inode(dentry);
+
+- fsstack_copy_attr_all(d_inode(dentry), lower_inode);
++ fsstack_copy_attr_all(inode, ecryptfs_inode_to_lower(inode));
++ if (!inode->i_nlink)
++ return 0;
+ }
+ return rc;
+ }
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index 6b4eb94b04a5..ff89971e3ee0 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -324,6 +324,22 @@ static void save_error_info(struct super_block *sb, const char *func,
+ ext4_commit_super(sb, 1);
+ }
+
++/*
++ * The del_gendisk() function uninitializes the disk-specific data
++ * structures, including the bdi structure, without telling anyone
++ * else. Once this happens, any attempt to call mark_buffer_dirty()
++ * (for example, by ext4_commit_super), will cause a kernel OOPS.
++ * This is a kludge to prevent these oops until we can put in a proper
++ * hook in del_gendisk() to inform the VFS and file system layers.
++ */
++static int block_device_ejected(struct super_block *sb)
++{
++ struct inode *bd_inode = sb->s_bdev->bd_inode;
++ struct backing_dev_info *bdi = inode_to_bdi(bd_inode);
++
++ return bdi->dev == NULL;
++}
++
+ static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn)
+ {
+ struct super_block *sb = journal->j_private;
+@@ -4591,7 +4607,7 @@ static int ext4_commit_super(struct super_block *sb, int sync)
+ struct buffer_head *sbh = EXT4_SB(sb)->s_sbh;
+ int error = 0;
+
+- if (!sbh)
++ if (!sbh || block_device_ejected(sb))
+ return error;
+ if (buffer_write_io_error(sbh)) {
+ /*
+@@ -4807,10 +4823,11 @@ static int ext4_freeze(struct super_block *sb)
+ error = jbd2_journal_flush(journal);
+ if (error < 0)
+ goto out;
++
++ /* Journal blocked and flushed, clear needs_recovery flag. */
++ EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ }
+
+- /* Journal blocked and flushed, clear needs_recovery flag. */
+- EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ error = ext4_commit_super(sb, 1);
+ out:
+ if (journal)
+@@ -4828,8 +4845,11 @@ static int ext4_unfreeze(struct super_block *sb)
+ if (sb->s_flags & MS_RDONLY)
+ return 0;
+
+- /* Reset the needs_recovery flag before the fs is unlocked. */
+- EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
++ if (EXT4_SB(sb)->s_journal) {
++ /* Reset the needs_recovery flag before the fs is unlocked. */
++ EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
++ }
++
+ ext4_commit_super(sb, 1);
+ return 0;
+ }
+diff --git a/fs/hfs/bnode.c b/fs/hfs/bnode.c
+index d3fa6bd9503e..221719eac5de 100644
+--- a/fs/hfs/bnode.c
++++ b/fs/hfs/bnode.c
+@@ -288,7 +288,6 @@ static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid)
+ page_cache_release(page);
+ goto fail;
+ }
+- page_cache_release(page);
+ node->page[i] = page;
+ }
+
+@@ -398,11 +397,11 @@ node_error:
+
+ void hfs_bnode_free(struct hfs_bnode *node)
+ {
+- //int i;
++ int i;
+
+- //for (i = 0; i < node->tree->pages_per_bnode; i++)
+- // if (node->page[i])
+- // page_cache_release(node->page[i]);
++ for (i = 0; i < node->tree->pages_per_bnode; i++)
++ if (node->page[i])
++ page_cache_release(node->page[i]);
+ kfree(node);
+ }
+
+diff --git a/fs/hfs/brec.c b/fs/hfs/brec.c
+index 9f4ee7f52026..6fc766df0461 100644
+--- a/fs/hfs/brec.c
++++ b/fs/hfs/brec.c
+@@ -131,13 +131,16 @@ skip:
+ hfs_bnode_write(node, entry, data_off + key_len, entry_len);
+ hfs_bnode_dump(node);
+
+- if (new_node) {
+- /* update parent key if we inserted a key
+- * at the start of the first node
+- */
+- if (!rec && new_node != node)
+- hfs_brec_update_parent(fd);
++ /*
++ * update parent key if we inserted a key
++ * at the start of the node and it is not the new node
++ */
++ if (!rec && new_node != node) {
++ hfs_bnode_read_key(node, fd->search_key, data_off + size);
++ hfs_brec_update_parent(fd);
++ }
+
++ if (new_node) {
+ hfs_bnode_put(fd->bnode);
+ if (!new_node->parent) {
+ hfs_btree_inc_height(tree);
+@@ -166,9 +169,6 @@ skip:
+ goto again;
+ }
+
+- if (!rec)
+- hfs_brec_update_parent(fd);
+-
+ return 0;
+ }
+
+@@ -366,6 +366,8 @@ again:
+ if (IS_ERR(parent))
+ return PTR_ERR(parent);
+ __hfs_brec_find(parent, fd);
++ if (fd->record < 0)
++ return -ENOENT;
+ hfs_bnode_dump(parent);
+ rec = fd->record;
+
+diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c
+index 759708fd9331..63924662aaf3 100644
+--- a/fs/hfsplus/bnode.c
++++ b/fs/hfsplus/bnode.c
+@@ -454,7 +454,6 @@ static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid)
+ page_cache_release(page);
+ goto fail;
+ }
+- page_cache_release(page);
+ node->page[i] = page;
+ }
+
+@@ -566,13 +565,11 @@ node_error:
+
+ void hfs_bnode_free(struct hfs_bnode *node)
+ {
+-#if 0
+ int i;
+
+ for (i = 0; i < node->tree->pages_per_bnode; i++)
+ if (node->page[i])
+ page_cache_release(node->page[i]);
+-#endif
+ kfree(node);
+ }
+
+diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
+index 4227dc4f7437..8c44654ce274 100644
+--- a/fs/jbd2/checkpoint.c
++++ b/fs/jbd2/checkpoint.c
+@@ -417,12 +417,12 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
+ * journal_clean_one_cp_list
+ *
+ * Find all the written-back checkpoint buffers in the given list and
+- * release them.
++ * release them. If 'destroy' is set, clean all buffers unconditionally.
+ *
+ * Called with j_list_lock held.
+ * Returns 1 if we freed the transaction, 0 otherwise.
+ */
+-static int journal_clean_one_cp_list(struct journal_head *jh)
++static int journal_clean_one_cp_list(struct journal_head *jh, bool destroy)
+ {
+ struct journal_head *last_jh;
+ struct journal_head *next_jh = jh;
+@@ -436,7 +436,10 @@ static int journal_clean_one_cp_list(struct journal_head *jh)
+ do {
+ jh = next_jh;
+ next_jh = jh->b_cpnext;
+- ret = __try_to_free_cp_buf(jh);
++ if (!destroy)
++ ret = __try_to_free_cp_buf(jh);
++ else
++ ret = __jbd2_journal_remove_checkpoint(jh) + 1;
+ if (!ret)
+ return freed;
+ if (ret == 2)
+@@ -459,10 +462,11 @@ static int journal_clean_one_cp_list(struct journal_head *jh)
+ * journal_clean_checkpoint_list
+ *
+ * Find all the written-back checkpoint buffers in the journal and release them.
++ * If 'destroy' is set, release all buffers unconditionally.
+ *
+ * Called with j_list_lock held.
+ */
+-void __jbd2_journal_clean_checkpoint_list(journal_t *journal)
++void __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy)
+ {
+ transaction_t *transaction, *last_transaction, *next_transaction;
+ int ret;
+@@ -476,7 +480,8 @@ void __jbd2_journal_clean_checkpoint_list(journal_t *journal)
+ do {
+ transaction = next_transaction;
+ next_transaction = transaction->t_cpnext;
+- ret = journal_clean_one_cp_list(transaction->t_checkpoint_list);
++ ret = journal_clean_one_cp_list(transaction->t_checkpoint_list,
++ destroy);
+ /*
+ * This function only frees up some memory if possible so we
+ * dont have an obligation to finish processing. Bail out if
+@@ -492,7 +497,7 @@ void __jbd2_journal_clean_checkpoint_list(journal_t *journal)
+ * we can possibly see not yet submitted buffers on io_list
+ */
+ ret = journal_clean_one_cp_list(transaction->
+- t_checkpoint_io_list);
++ t_checkpoint_io_list, destroy);
+ if (need_resched())
+ return;
+ /*
+@@ -506,6 +511,28 @@ void __jbd2_journal_clean_checkpoint_list(journal_t *journal)
+ }
+
+ /*
++ * Remove buffers from all checkpoint lists as journal is aborted and we just
++ * need to free memory
++ */
++void jbd2_journal_destroy_checkpoint(journal_t *journal)
++{
++ /*
++ * We loop because __jbd2_journal_clean_checkpoint_list() may abort
++ * early due to a need of rescheduling.
++ */
++ while (1) {
++ spin_lock(&journal->j_list_lock);
++ if (!journal->j_checkpoint_transactions) {
++ spin_unlock(&journal->j_list_lock);
++ break;
++ }
++ __jbd2_journal_clean_checkpoint_list(journal, true);
++ spin_unlock(&journal->j_list_lock);
++ cond_resched();
++ }
++}
++
++/*
+ * journal_remove_checkpoint: called after a buffer has been committed
+ * to disk (either by being write-back flushed to disk, or being
+ * committed to the log).
+diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
+index b73e0215baa7..362e5f614450 100644
+--- a/fs/jbd2/commit.c
++++ b/fs/jbd2/commit.c
+@@ -510,7 +510,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
+ * frees some memory
+ */
+ spin_lock(&journal->j_list_lock);
+- __jbd2_journal_clean_checkpoint_list(journal);
++ __jbd2_journal_clean_checkpoint_list(journal, false);
+ spin_unlock(&journal->j_list_lock);
+
+ jbd_debug(3, "JBD2: commit phase 1\n");
+diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
+index 112fad9e1e20..7003c0925760 100644
+--- a/fs/jbd2/journal.c
++++ b/fs/jbd2/journal.c
+@@ -1708,8 +1708,17 @@ int jbd2_journal_destroy(journal_t *journal)
+ while (journal->j_checkpoint_transactions != NULL) {
+ spin_unlock(&journal->j_list_lock);
+ mutex_lock(&journal->j_checkpoint_mutex);
+- jbd2_log_do_checkpoint(journal);
++ err = jbd2_log_do_checkpoint(journal);
+ mutex_unlock(&journal->j_checkpoint_mutex);
++ /*
++ * If checkpointing failed, just free the buffers to avoid
++ * looping forever
++ */
++ if (err) {
++ jbd2_journal_destroy_checkpoint(journal);
++ spin_lock(&journal->j_list_lock);
++ break;
++ }
+ spin_lock(&journal->j_list_lock);
+ }
+
+diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
+index 6f5f0f425e86..fecd9201dbad 100644
+--- a/fs/nfs/flexfilelayout/flexfilelayout.c
++++ b/fs/nfs/flexfilelayout/flexfilelayout.c
+@@ -1039,6 +1039,11 @@ static int ff_layout_write_done_cb(struct rpc_task *task,
+ hdr->res.verf->committed == NFS_DATA_SYNC)
+ ff_layout_set_layoutcommit(hdr);
+
++ /* zero out fattr since we don't care DS attr at all */
++ hdr->fattr.valid = 0;
++ if (task->tk_status >= 0)
++ nfs_writeback_update_inode(hdr);
++
+ return 0;
+ }
+
+diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+index f13e1969eedd..b28fa4cbea52 100644
+--- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c
++++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+@@ -500,16 +500,19 @@ int ff_layout_encode_ds_ioerr(struct nfs4_flexfile_layout *flo,
+ range->offset, range->length))
+ continue;
+ /* offset(8) + length(8) + stateid(NFS4_STATEID_SIZE)
+- * + deviceid(NFS4_DEVICEID4_SIZE) + status(4) + opnum(4)
++ * + array length + deviceid(NFS4_DEVICEID4_SIZE)
++ * + status(4) + opnum(4)
+ */
+ p = xdr_reserve_space(xdr,
+- 24 + NFS4_STATEID_SIZE + NFS4_DEVICEID4_SIZE);
++ 28 + NFS4_STATEID_SIZE + NFS4_DEVICEID4_SIZE);
+ if (unlikely(!p))
+ return -ENOBUFS;
+ p = xdr_encode_hyper(p, err->offset);
+ p = xdr_encode_hyper(p, err->length);
+ p = xdr_encode_opaque_fixed(p, &err->stateid,
+ NFS4_STATEID_SIZE);
++ /* Encode 1 error */
++ *p++ = cpu_to_be32(1);
+ p = xdr_encode_opaque_fixed(p, &err->deviceid,
+ NFS4_DEVICEID4_SIZE);
+ *p++ = cpu_to_be32(err->status);
+diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
+index 5d25b9d97c29..976ba792fbc6 100644
+--- a/fs/nfs/inode.c
++++ b/fs/nfs/inode.c
+@@ -1270,13 +1270,6 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
+ return 0;
+ }
+
+-static int nfs_ctime_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
+-{
+- if (!(fattr->valid & NFS_ATTR_FATTR_CTIME))
+- return 0;
+- return timespec_compare(&fattr->ctime, &inode->i_ctime) > 0;
+-}
+-
+ static atomic_long_t nfs_attr_generation_counter;
+
+ static unsigned long nfs_read_attr_generation_counter(void)
+@@ -1425,7 +1418,6 @@ static int nfs_inode_attrs_need_update(const struct inode *inode, const struct n
+ const struct nfs_inode *nfsi = NFS_I(inode);
+
+ return ((long)fattr->gencount - (long)nfsi->attr_gencount) > 0 ||
+- nfs_ctime_need_update(inode, fattr) ||
+ ((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0);
+ }
+
+@@ -1488,6 +1480,13 @@ static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr
+ {
+ unsigned long invalid = NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+
++ /*
++ * Don't revalidate the pagecache if we hold a delegation, but do
++ * force an attribute update
++ */
++ if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
++ invalid = NFS_INO_INVALID_ATTR|NFS_INO_REVAL_FORCED;
++
+ if (S_ISDIR(inode->i_mode))
+ invalid |= NFS_INO_INVALID_DATA;
+ nfs_set_cache_invalid(inode, invalid);
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index d3f205126609..c245874d7e9d 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -1152,6 +1152,8 @@ static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
+ return 0;
+ if ((delegation->type & fmode) != fmode)
+ return 0;
++ if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
++ return 0;
+ if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags))
+ return 0;
+ nfs_mark_delegation_referenced(delegation);
+@@ -1216,6 +1218,7 @@ static void nfs_resync_open_stateid_locked(struct nfs4_state *state)
+ }
+
+ static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
++ nfs4_stateid *arg_stateid,
+ nfs4_stateid *stateid, fmode_t fmode)
+ {
+ clear_bit(NFS_O_RDWR_STATE, &state->flags);
+@@ -1234,8 +1237,9 @@ static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
+ if (stateid == NULL)
+ return;
+ /* Handle races with OPEN */
+- if (!nfs4_stateid_match_other(stateid, &state->open_stateid) ||
+- !nfs4_stateid_is_newer(stateid, &state->open_stateid)) {
++ if (!nfs4_stateid_match_other(arg_stateid, &state->open_stateid) ||
++ (nfs4_stateid_match_other(stateid, &state->open_stateid) &&
++ !nfs4_stateid_is_newer(stateid, &state->open_stateid))) {
+ nfs_resync_open_stateid_locked(state);
+ return;
+ }
+@@ -1244,10 +1248,12 @@ static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
+ nfs4_stateid_copy(&state->open_stateid, stateid);
+ }
+
+-static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
++static void nfs_clear_open_stateid(struct nfs4_state *state,
++ nfs4_stateid *arg_stateid,
++ nfs4_stateid *stateid, fmode_t fmode)
+ {
+ write_seqlock(&state->seqlock);
+- nfs_clear_open_stateid_locked(state, stateid, fmode);
++ nfs_clear_open_stateid_locked(state, arg_stateid, stateid, fmode);
+ write_sequnlock(&state->seqlock);
+ if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
+ nfs4_schedule_state_manager(state->owner->so_server->nfs_client);
+@@ -2413,7 +2419,7 @@ static int _nfs4_do_open(struct inode *dir,
+ goto err_free_label;
+ state = ctx->state;
+
+- if ((opendata->o_arg.open_flags & O_EXCL) &&
++ if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) &&
+ (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) {
+ nfs4_exclusive_attrset(opendata, sattr);
+
+@@ -2672,7 +2678,8 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
+ goto out_release;
+ }
+ }
+- nfs_clear_open_stateid(state, res_stateid, calldata->arg.fmode);
++ nfs_clear_open_stateid(state, &calldata->arg.stateid,
++ res_stateid, calldata->arg.fmode);
+ out_release:
+ nfs_release_seqid(calldata->arg.seqid);
+ nfs_refresh_inode(calldata->inode, calldata->res.fattr);
+@@ -8571,6 +8578,7 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
+ .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
+ .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
+ .state_renewal_ops = &nfs41_state_renewal_ops,
++ .mig_recovery_ops = &nfs41_mig_recovery_ops,
+ };
+ #endif
+
+diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
+index 7b4552678536..069914ce7641 100644
+--- a/fs/nfs/pagelist.c
++++ b/fs/nfs/pagelist.c
+@@ -77,8 +77,8 @@ EXPORT_SYMBOL_GPL(nfs_pgheader_init);
+ void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos)
+ {
+ spin_lock(&hdr->lock);
+- if (pos < hdr->io_start + hdr->good_bytes) {
+- set_bit(NFS_IOHDR_ERROR, &hdr->flags);
++ if (!test_and_set_bit(NFS_IOHDR_ERROR, &hdr->flags)
++ || pos < hdr->io_start + hdr->good_bytes) {
+ clear_bit(NFS_IOHDR_EOF, &hdr->flags);
+ hdr->good_bytes = pos - hdr->io_start;
+ hdr->error = error;
+diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c
+index f37e25b6311c..1705c78ee2d8 100644
+--- a/fs/nfs/pnfs_nfs.c
++++ b/fs/nfs/pnfs_nfs.c
+@@ -359,26 +359,31 @@ same_sockaddr(struct sockaddr *addr1, struct sockaddr *addr2)
+ return false;
+ }
+
++/*
++ * Checks if 'dsaddrs1' contains a subset of 'dsaddrs2'. If it does,
++ * declare a match.
++ */
+ static bool
+ _same_data_server_addrs_locked(const struct list_head *dsaddrs1,
+ const struct list_head *dsaddrs2)
+ {
+ struct nfs4_pnfs_ds_addr *da1, *da2;
+-
+- /* step through both lists, comparing as we go */
+- for (da1 = list_first_entry(dsaddrs1, typeof(*da1), da_node),
+- da2 = list_first_entry(dsaddrs2, typeof(*da2), da_node);
+- da1 != NULL && da2 != NULL;
+- da1 = list_entry(da1->da_node.next, typeof(*da1), da_node),
+- da2 = list_entry(da2->da_node.next, typeof(*da2), da_node)) {
+- if (!same_sockaddr((struct sockaddr *)&da1->da_addr,
+- (struct sockaddr *)&da2->da_addr))
+- return false;
++ struct sockaddr *sa1, *sa2;
++ bool match = false;
++
++ list_for_each_entry(da1, dsaddrs1, da_node) {
++ sa1 = (struct sockaddr *)&da1->da_addr;
++ match = false;
++ list_for_each_entry(da2, dsaddrs2, da_node) {
++ sa2 = (struct sockaddr *)&da2->da_addr;
++ match = same_sockaddr(sa1, sa2);
++ if (match)
++ break;
++ }
++ if (!match)
++ break;
+ }
+- if (da1 == NULL && da2 == NULL)
+- return true;
+-
+- return false;
++ return match;
+ }
+
+ /*
+diff --git a/fs/nfs/write.c b/fs/nfs/write.c
+index daf355642845..07115b9b1ad2 100644
+--- a/fs/nfs/write.c
++++ b/fs/nfs/write.c
+@@ -1383,24 +1383,27 @@ static void nfs_writeback_check_extend(struct nfs_pgio_header *hdr,
+ {
+ struct nfs_pgio_args *argp = &hdr->args;
+ struct nfs_pgio_res *resp = &hdr->res;
++ u64 size = argp->offset + resp->count;
+
+ if (!(fattr->valid & NFS_ATTR_FATTR_SIZE))
++ fattr->size = size;
++ if (nfs_size_to_loff_t(fattr->size) < i_size_read(hdr->inode)) {
++ fattr->valid &= ~NFS_ATTR_FATTR_SIZE;
+ return;
+- if (argp->offset + resp->count != fattr->size)
+- return;
+- if (nfs_size_to_loff_t(fattr->size) < i_size_read(hdr->inode))
++ }
++ if (size != fattr->size)
+ return;
+ /* Set attribute barrier */
+ nfs_fattr_set_barrier(fattr);
++ /* ...and update size */
++ fattr->valid |= NFS_ATTR_FATTR_SIZE;
+ }
+
+ void nfs_writeback_update_inode(struct nfs_pgio_header *hdr)
+ {
+- struct nfs_fattr *fattr = hdr->res.fattr;
++ struct nfs_fattr *fattr = &hdr->fattr;
+ struct inode *inode = hdr->inode;
+
+- if (fattr == NULL)
+- return;
+ spin_lock(&inode->i_lock);
+ nfs_writeback_check_extend(hdr, fattr);
+ nfs_post_op_update_inode_force_wcc_locked(inode, fattr);
+diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
+index 6e13504f736e..397798368b1a 100644
+--- a/fs/nfsd/nfs4state.c
++++ b/fs/nfsd/nfs4state.c
+@@ -777,13 +777,16 @@ hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
+ list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
+ }
+
+-static void
++static bool
+ unhash_delegation_locked(struct nfs4_delegation *dp)
+ {
+ struct nfs4_file *fp = dp->dl_stid.sc_file;
+
+ lockdep_assert_held(&state_lock);
+
++ if (list_empty(&dp->dl_perfile))
++ return false;
++
+ dp->dl_stid.sc_type = NFS4_CLOSED_DELEG_STID;
+ /* Ensure that deleg break won't try to requeue it */
+ ++dp->dl_time;
+@@ -792,16 +795,21 @@ unhash_delegation_locked(struct nfs4_delegation *dp)
+ list_del_init(&dp->dl_recall_lru);
+ list_del_init(&dp->dl_perfile);
+ spin_unlock(&fp->fi_lock);
++ return true;
+ }
+
+ static void destroy_delegation(struct nfs4_delegation *dp)
+ {
++ bool unhashed;
++
+ spin_lock(&state_lock);
+- unhash_delegation_locked(dp);
++ unhashed = unhash_delegation_locked(dp);
+ spin_unlock(&state_lock);
+- put_clnt_odstate(dp->dl_clnt_odstate);
+- nfs4_put_deleg_lease(dp->dl_stid.sc_file);
+- nfs4_put_stid(&dp->dl_stid);
++ if (unhashed) {
++ put_clnt_odstate(dp->dl_clnt_odstate);
++ nfs4_put_deleg_lease(dp->dl_stid.sc_file);
++ nfs4_put_stid(&dp->dl_stid);
++ }
+ }
+
+ static void revoke_delegation(struct nfs4_delegation *dp)
+@@ -1004,16 +1012,20 @@ static void nfs4_put_stateowner(struct nfs4_stateowner *sop)
+ sop->so_ops->so_free(sop);
+ }
+
+-static void unhash_ol_stateid(struct nfs4_ol_stateid *stp)
++static bool unhash_ol_stateid(struct nfs4_ol_stateid *stp)
+ {
+ struct nfs4_file *fp = stp->st_stid.sc_file;
+
+ lockdep_assert_held(&stp->st_stateowner->so_client->cl_lock);
+
++ if (list_empty(&stp->st_perfile))
++ return false;
++
+ spin_lock(&fp->fi_lock);
+- list_del(&stp->st_perfile);
++ list_del_init(&stp->st_perfile);
+ spin_unlock(&fp->fi_lock);
+ list_del(&stp->st_perstateowner);
++ return true;
+ }
+
+ static void nfs4_free_ol_stateid(struct nfs4_stid *stid)
+@@ -1063,25 +1075,27 @@ static void put_ol_stateid_locked(struct nfs4_ol_stateid *stp,
+ list_add(&stp->st_locks, reaplist);
+ }
+
+-static void unhash_lock_stateid(struct nfs4_ol_stateid *stp)
++static bool unhash_lock_stateid(struct nfs4_ol_stateid *stp)
+ {
+ struct nfs4_openowner *oo = openowner(stp->st_openstp->st_stateowner);
+
+ lockdep_assert_held(&oo->oo_owner.so_client->cl_lock);
+
+ list_del_init(&stp->st_locks);
+- unhash_ol_stateid(stp);
+ nfs4_unhash_stid(&stp->st_stid);
++ return unhash_ol_stateid(stp);
+ }
+
+ static void release_lock_stateid(struct nfs4_ol_stateid *stp)
+ {
+ struct nfs4_openowner *oo = openowner(stp->st_openstp->st_stateowner);
++ bool unhashed;
+
+ spin_lock(&oo->oo_owner.so_client->cl_lock);
+- unhash_lock_stateid(stp);
++ unhashed = unhash_lock_stateid(stp);
+ spin_unlock(&oo->oo_owner.so_client->cl_lock);
+- nfs4_put_stid(&stp->st_stid);
++ if (unhashed)
++ nfs4_put_stid(&stp->st_stid);
+ }
+
+ static void unhash_lockowner_locked(struct nfs4_lockowner *lo)
+@@ -1129,7 +1143,7 @@ static void release_lockowner(struct nfs4_lockowner *lo)
+ while (!list_empty(&lo->lo_owner.so_stateids)) {
+ stp = list_first_entry(&lo->lo_owner.so_stateids,
+ struct nfs4_ol_stateid, st_perstateowner);
+- unhash_lock_stateid(stp);
++ WARN_ON(!unhash_lock_stateid(stp));
+ put_ol_stateid_locked(stp, &reaplist);
+ }
+ spin_unlock(&clp->cl_lock);
+@@ -1142,21 +1156,26 @@ static void release_open_stateid_locks(struct nfs4_ol_stateid *open_stp,
+ {
+ struct nfs4_ol_stateid *stp;
+
++ lockdep_assert_held(&open_stp->st_stid.sc_client->cl_lock);
++
+ while (!list_empty(&open_stp->st_locks)) {
+ stp = list_entry(open_stp->st_locks.next,
+ struct nfs4_ol_stateid, st_locks);
+- unhash_lock_stateid(stp);
++ WARN_ON(!unhash_lock_stateid(stp));
+ put_ol_stateid_locked(stp, reaplist);
+ }
+ }
+
+-static void unhash_open_stateid(struct nfs4_ol_stateid *stp,
++static bool unhash_open_stateid(struct nfs4_ol_stateid *stp,
+ struct list_head *reaplist)
+ {
++ bool unhashed;
++
+ lockdep_assert_held(&stp->st_stid.sc_client->cl_lock);
+
+- unhash_ol_stateid(stp);
++ unhashed = unhash_ol_stateid(stp);
+ release_open_stateid_locks(stp, reaplist);
++ return unhashed;
+ }
+
+ static void release_open_stateid(struct nfs4_ol_stateid *stp)
+@@ -1164,8 +1183,8 @@ static void release_open_stateid(struct nfs4_ol_stateid *stp)
+ LIST_HEAD(reaplist);
+
+ spin_lock(&stp->st_stid.sc_client->cl_lock);
+- unhash_open_stateid(stp, &reaplist);
+- put_ol_stateid_locked(stp, &reaplist);
++ if (unhash_open_stateid(stp, &reaplist))
++ put_ol_stateid_locked(stp, &reaplist);
+ spin_unlock(&stp->st_stid.sc_client->cl_lock);
+ free_ol_stateid_reaplist(&reaplist);
+ }
+@@ -1210,8 +1229,8 @@ static void release_openowner(struct nfs4_openowner *oo)
+ while (!list_empty(&oo->oo_owner.so_stateids)) {
+ stp = list_first_entry(&oo->oo_owner.so_stateids,
+ struct nfs4_ol_stateid, st_perstateowner);
+- unhash_open_stateid(stp, &reaplist);
+- put_ol_stateid_locked(stp, &reaplist);
++ if (unhash_open_stateid(stp, &reaplist))
++ put_ol_stateid_locked(stp, &reaplist);
+ }
+ spin_unlock(&clp->cl_lock);
+ free_ol_stateid_reaplist(&reaplist);
+@@ -1714,7 +1733,7 @@ __destroy_client(struct nfs4_client *clp)
+ spin_lock(&state_lock);
+ while (!list_empty(&clp->cl_delegations)) {
+ dp = list_entry(clp->cl_delegations.next, struct nfs4_delegation, dl_perclnt);
+- unhash_delegation_locked(dp);
++ WARN_ON(!unhash_delegation_locked(dp));
+ list_add(&dp->dl_recall_lru, &reaplist);
+ }
+ spin_unlock(&state_lock);
+@@ -4346,7 +4365,7 @@ nfs4_laundromat(struct nfsd_net *nn)
+ new_timeo = min(new_timeo, t);
+ break;
+ }
+- unhash_delegation_locked(dp);
++ WARN_ON(!unhash_delegation_locked(dp));
+ list_add(&dp->dl_recall_lru, &reaplist);
+ }
+ spin_unlock(&state_lock);
+@@ -4714,7 +4733,7 @@ nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ if (check_for_locks(stp->st_stid.sc_file,
+ lockowner(stp->st_stateowner)))
+ break;
+- unhash_lock_stateid(stp);
++ WARN_ON(!unhash_lock_stateid(stp));
+ spin_unlock(&cl->cl_lock);
+ nfs4_put_stid(s);
+ ret = nfs_ok;
+@@ -4930,20 +4949,23 @@ out:
+ static void nfsd4_close_open_stateid(struct nfs4_ol_stateid *s)
+ {
+ struct nfs4_client *clp = s->st_stid.sc_client;
++ bool unhashed;
+ LIST_HEAD(reaplist);
+
+ s->st_stid.sc_type = NFS4_CLOSED_STID;
+ spin_lock(&clp->cl_lock);
+- unhash_open_stateid(s, &reaplist);
++ unhashed = unhash_open_stateid(s, &reaplist);
+
+ if (clp->cl_minorversion) {
+- put_ol_stateid_locked(s, &reaplist);
++ if (unhashed)
++ put_ol_stateid_locked(s, &reaplist);
+ spin_unlock(&clp->cl_lock);
+ free_ol_stateid_reaplist(&reaplist);
+ } else {
+ spin_unlock(&clp->cl_lock);
+ free_ol_stateid_reaplist(&reaplist);
+- move_to_close_lru(s, clp->net);
++ if (unhashed)
++ move_to_close_lru(s, clp->net);
+ }
+ }
+
+@@ -5982,7 +6004,7 @@ nfsd_inject_add_lock_to_list(struct nfs4_ol_stateid *lst,
+
+ static u64 nfsd_foreach_client_lock(struct nfs4_client *clp, u64 max,
+ struct list_head *collect,
+- void (*func)(struct nfs4_ol_stateid *))
++ bool (*func)(struct nfs4_ol_stateid *))
+ {
+ struct nfs4_openowner *oop;
+ struct nfs4_ol_stateid *stp, *st_next;
+@@ -5996,9 +6018,9 @@ static u64 nfsd_foreach_client_lock(struct nfs4_client *clp, u64 max,
+ list_for_each_entry_safe(lst, lst_next,
+ &stp->st_locks, st_locks) {
+ if (func) {
+- func(lst);
+- nfsd_inject_add_lock_to_list(lst,
+- collect);
++ if (func(lst))
++ nfsd_inject_add_lock_to_list(lst,
++ collect);
+ }
+ ++count;
+ /*
+@@ -6268,7 +6290,7 @@ static u64 nfsd_find_all_delegations(struct nfs4_client *clp, u64 max,
+ continue;
+
+ atomic_inc(&clp->cl_refcount);
+- unhash_delegation_locked(dp);
++ WARN_ON(!unhash_delegation_locked(dp));
+ list_add(&dp->dl_recall_lru, victims);
+ }
+ ++count;
+@@ -6598,7 +6620,7 @@ nfs4_state_shutdown_net(struct net *net)
+ spin_lock(&state_lock);
+ list_for_each_safe(pos, next, &nn->del_recall_lru) {
+ dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
+- unhash_delegation_locked(dp);
++ WARN_ON(!unhash_delegation_locked(dp));
+ list_add(&dp->dl_recall_lru, &reaplist);
+ }
+ spin_unlock(&state_lock);
+diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
+index d4d84451e0e6..3dd1b616b92b 100644
+--- a/fs/nfsd/nfs4xdr.c
++++ b/fs/nfsd/nfs4xdr.c
+@@ -2139,6 +2139,27 @@ nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp,
+ return nfsd4_encode_user(xdr, rqstp, ace->who_uid);
+ }
+
++static inline __be32
++nfsd4_encode_layout_type(struct xdr_stream *xdr, enum pnfs_layouttype layout_type)
++{
++ __be32 *p;
++
++ if (layout_type) {
++ p = xdr_reserve_space(xdr, 8);
++ if (!p)
++ return nfserr_resource;
++ *p++ = cpu_to_be32(1);
++ *p++ = cpu_to_be32(layout_type);
++ } else {
++ p = xdr_reserve_space(xdr, 4);
++ if (!p)
++ return nfserr_resource;
++ *p++ = cpu_to_be32(0);
++ }
++
++ return 0;
++}
++
+ #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
+ FATTR4_WORD0_RDATTR_ERROR)
+ #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID
+@@ -2692,20 +2713,16 @@ out_acl:
+ p = xdr_encode_hyper(p, stat.ino);
+ }
+ #ifdef CONFIG_NFSD_PNFS
+- if ((bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) ||
+- (bmval2 & FATTR4_WORD2_LAYOUT_TYPES)) {
+- if (exp->ex_layout_type) {
+- p = xdr_reserve_space(xdr, 8);
+- if (!p)
+- goto out_resource;
+- *p++ = cpu_to_be32(1);
+- *p++ = cpu_to_be32(exp->ex_layout_type);
+- } else {
+- p = xdr_reserve_space(xdr, 4);
+- if (!p)
+- goto out_resource;
+- *p++ = cpu_to_be32(0);
+- }
++ if (bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) {
++ status = nfsd4_encode_layout_type(xdr, exp->ex_layout_type);
++ if (status)
++ goto out;
++ }
++
++ if (bmval2 & FATTR4_WORD2_LAYOUT_TYPES) {
++ status = nfsd4_encode_layout_type(xdr, exp->ex_layout_type);
++ if (status)
++ goto out;
+ }
+
+ if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) {
+diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
+index edb640ae9a94..eb1cebed3f36 100644
+--- a/include/linux/jbd2.h
++++ b/include/linux/jbd2.h
+@@ -1042,8 +1042,9 @@ void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
+ extern void jbd2_journal_commit_transaction(journal_t *);
+
+ /* Checkpoint list management */
+-void __jbd2_journal_clean_checkpoint_list(journal_t *journal);
++void __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy);
+ int __jbd2_journal_remove_checkpoint(struct journal_head *);
++void jbd2_journal_destroy_checkpoint(journal_t *journal);
+ void __jbd2_journal_insert_checkpoint(struct journal_head *, transaction_t *);
+
+
+diff --git a/include/linux/mm.h b/include/linux/mm.h
+index 0755b9fd03a7..b2085582d44e 100644
+--- a/include/linux/mm.h
++++ b/include/linux/mm.h
+@@ -1002,6 +1002,34 @@ static inline int page_mapped(struct page *page)
+ }
+
+ /*
++ * Return true only if the page has been allocated with
++ * ALLOC_NO_WATERMARKS and the low watermark was not
++ * met implying that the system is under some pressure.
++ */
++static inline bool page_is_pfmemalloc(struct page *page)
++{
++ /*
++ * Page index cannot be this large so this must be
++ * a pfmemalloc page.
++ */
++ return page->index == -1UL;
++}
++
++/*
++ * Only to be called by the page allocator on a freshly allocated
++ * page.
++ */
++static inline void set_page_pfmemalloc(struct page *page)
++{
++ page->index = -1UL;
++}
++
++static inline void clear_page_pfmemalloc(struct page *page)
++{
++ page->index = 0;
++}
++
++/*
+ * Different kinds of faults, as returned by handle_mm_fault().
+ * Used to decide whether a process gets delivered SIGBUS or
+ * just gets major/minor fault counters bumped up.
+diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
+index 8d37e26a1007..c0c6b33535fb 100644
+--- a/include/linux/mm_types.h
++++ b/include/linux/mm_types.h
+@@ -63,15 +63,6 @@ struct page {
+ union {
+ pgoff_t index; /* Our offset within mapping. */
+ void *freelist; /* sl[aou]b first free object */
+- bool pfmemalloc; /* If set by the page allocator,
+- * ALLOC_NO_WATERMARKS was set
+- * and the low watermark was not
+- * met implying that the system
+- * is under some pressure. The
+- * caller should try ensure
+- * this page is only used to
+- * free other pages.
+- */
+ };
+
+ union {
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index f15154a879c7..eb1c55b8255a 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -1590,20 +1590,16 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i,
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+ /*
+- * Propagate page->pfmemalloc to the skb if we can. The problem is
+- * that not all callers have unique ownership of the page. If
+- * pfmemalloc is set, we check the mapping as a mapping implies
+- * page->index is set (index and pfmemalloc share space).
+- * If it's a valid mapping, we cannot use page->pfmemalloc but we
+- * do not lose pfmemalloc information as the pages would not be
+- * allocated using __GFP_MEMALLOC.
++ * Propagate page pfmemalloc to the skb if we can. The problem is
++ * that not all callers have unique ownership of the page but rely
++ * on page_is_pfmemalloc doing the right thing(tm).
+ */
+ frag->page.p = page;
+ frag->page_offset = off;
+ skb_frag_size_set(frag, size);
+
+ page = compound_head(page);
+- if (page->pfmemalloc && !page->mapping)
++ if (page_is_pfmemalloc(page))
+ skb->pfmemalloc = true;
+ }
+
+@@ -2250,7 +2246,7 @@ static inline struct page *dev_alloc_page(void)
+ static inline void skb_propagate_pfmemalloc(struct page *page,
+ struct sk_buff *skb)
+ {
+- if (page && page->pfmemalloc)
++ if (page_is_pfmemalloc(page))
+ skb->pfmemalloc = true;
+ }
+
+diff --git a/include/linux/sunrpc/xprtsock.h b/include/linux/sunrpc/xprtsock.h
+index 7591788e9fbf..357e44c1a46b 100644
+--- a/include/linux/sunrpc/xprtsock.h
++++ b/include/linux/sunrpc/xprtsock.h
+@@ -42,6 +42,7 @@ struct sock_xprt {
+ /*
+ * Connection of transports
+ */
++ unsigned long sock_state;
+ struct delayed_work connect_worker;
+ struct sockaddr_storage srcaddr;
+ unsigned short srcport;
+@@ -76,6 +77,8 @@ struct sock_xprt {
+ */
+ #define TCP_RPC_REPLY (1UL << 6)
+
++#define XPRT_SOCK_CONNECTING 1U
++
+ #endif /* __KERNEL__ */
+
+ #endif /* _LINUX_SUNRPC_XPRTSOCK_H */
+diff --git a/include/net/act_api.h b/include/net/act_api.h
+index 3ee4c92afd1b..931738bc5bba 100644
+--- a/include/net/act_api.h
++++ b/include/net/act_api.h
+@@ -99,7 +99,6 @@ struct tc_action_ops {
+
+ int tcf_hash_search(struct tc_action *a, u32 index);
+ void tcf_hash_destroy(struct tc_action *a);
+-int tcf_hash_release(struct tc_action *a, int bind);
+ u32 tcf_hash_new_index(struct tcf_hashinfo *hinfo);
+ int tcf_hash_check(u32 index, struct tc_action *a, int bind);
+ int tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a,
+@@ -107,6 +106,13 @@ int tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a,
+ void tcf_hash_cleanup(struct tc_action *a, struct nlattr *est);
+ void tcf_hash_insert(struct tc_action *a);
+
++int __tcf_hash_release(struct tc_action *a, bool bind, bool strict);
++
++static inline int tcf_hash_release(struct tc_action *a, bool bind)
++{
++ return __tcf_hash_release(a, bind, false);
++}
++
+ int tcf_register_action(struct tc_action_ops *a, unsigned int mask);
+ int tcf_unregister_action(struct tc_action_ops *a);
+ int tcf_action_destroy(struct list_head *actions, int bind);
+diff --git a/include/net/ip.h b/include/net/ip.h
+index d14af7edd197..f41fc497b21b 100644
+--- a/include/net/ip.h
++++ b/include/net/ip.h
+@@ -161,6 +161,7 @@ static inline __u8 get_rtconn_flags(struct ipcm_cookie* ipc, struct sock* sk)
+ }
+
+ /* datagram.c */
++int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+
+ void ip4_datagram_release_cb(struct sock *sk);
+diff --git a/include/soc/tegra/mc.h b/include/soc/tegra/mc.h
+index 63deb8d9f82a..d298857cd845 100644
+--- a/include/soc/tegra/mc.h
++++ b/include/soc/tegra/mc.h
+@@ -59,6 +59,7 @@ struct tegra_smmu_soc {
+ bool supports_round_robin_arbitration;
+ bool supports_request_limit;
+
++ unsigned int num_tlb_lines;
+ unsigned int num_asids;
+
+ const struct tegra_smmu_ops *ops;
+diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
+index fd1a02cb3c82..003dca933803 100644
+--- a/include/trace/events/sunrpc.h
++++ b/include/trace/events/sunrpc.h
+@@ -529,18 +529,21 @@ TRACE_EVENT(svc_xprt_do_enqueue,
+
+ TP_STRUCT__entry(
+ __field(struct svc_xprt *, xprt)
+- __field(struct svc_rqst *, rqst)
++ __field_struct(struct sockaddr_storage, ss)
++ __field(int, pid)
++ __field(unsigned long, flags)
+ ),
+
+ TP_fast_assign(
+ __entry->xprt = xprt;
+- __entry->rqst = rqst;
++ xprt ? memcpy(&__entry->ss, &xprt->xpt_remote, sizeof(__entry->ss)) : memset(&__entry->ss, 0, sizeof(__entry->ss));
++ __entry->pid = rqst? rqst->rq_task->pid : 0;
++ __entry->flags = xprt ? xprt->xpt_flags : 0;
+ ),
+
+ TP_printk("xprt=0x%p addr=%pIScp pid=%d flags=%s", __entry->xprt,
+- (struct sockaddr *)&__entry->xprt->xpt_remote,
+- __entry->rqst ? __entry->rqst->rq_task->pid : 0,
+- show_svc_xprt_flags(__entry->xprt->xpt_flags))
++ (struct sockaddr *)&__entry->ss,
++ __entry->pid, show_svc_xprt_flags(__entry->flags))
+ );
+
+ TRACE_EVENT(svc_xprt_dequeue,
+@@ -589,16 +592,20 @@ TRACE_EVENT(svc_handle_xprt,
+ TP_STRUCT__entry(
+ __field(struct svc_xprt *, xprt)
+ __field(int, len)
++ __field_struct(struct sockaddr_storage, ss)
++ __field(unsigned long, flags)
+ ),
+
+ TP_fast_assign(
+ __entry->xprt = xprt;
++ xprt ? memcpy(&__entry->ss, &xprt->xpt_remote, sizeof(__entry->ss)) : memset(&__entry->ss, 0, sizeof(__entry->ss));
+ __entry->len = len;
++ __entry->flags = xprt ? xprt->xpt_flags : 0;
+ ),
+
+ TP_printk("xprt=0x%p addr=%pIScp len=%d flags=%s", __entry->xprt,
+- (struct sockaddr *)&__entry->xprt->xpt_remote, __entry->len,
+- show_svc_xprt_flags(__entry->xprt->xpt_flags))
++ (struct sockaddr *)&__entry->ss,
++ __entry->len, show_svc_xprt_flags(__entry->flags))
+ );
+ #endif /* _TRACE_SUNRPC_H */
+
+diff --git a/kernel/fork.c b/kernel/fork.c
+index 03c1eaaa6ef5..8209fa2d36ef 100644
+--- a/kernel/fork.c
++++ b/kernel/fork.c
+@@ -1854,13 +1854,21 @@ static int check_unshare_flags(unsigned long unshare_flags)
+ CLONE_NEWUSER|CLONE_NEWPID))
+ return -EINVAL;
+ /*
+- * Not implemented, but pretend it works if there is nothing to
+- * unshare. Note that unsharing CLONE_THREAD or CLONE_SIGHAND
+- * needs to unshare vm.
++ * Not implemented, but pretend it works if there is nothing
++ * to unshare. Note that unsharing the address space or the
++ * signal handlers also need to unshare the signal queues (aka
++ * CLONE_THREAD).
+ */
+ if (unshare_flags & (CLONE_THREAD | CLONE_SIGHAND | CLONE_VM)) {
+- /* FIXME: get_task_mm() increments ->mm_users */
+- if (atomic_read(¤t->mm->mm_users) > 1)
++ if (!thread_group_empty(current))
++ return -EINVAL;
++ }
++ if (unshare_flags & (CLONE_SIGHAND | CLONE_VM)) {
++ if (atomic_read(¤t->sighand->count) > 1)
++ return -EINVAL;
++ }
++ if (unshare_flags & CLONE_VM) {
++ if (!current_is_single_threaded())
+ return -EINVAL;
+ }
+
+@@ -1929,16 +1937,16 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
+ if (unshare_flags & CLONE_NEWUSER)
+ unshare_flags |= CLONE_THREAD | CLONE_FS;
+ /*
+- * If unsharing a thread from a thread group, must also unshare vm.
+- */
+- if (unshare_flags & CLONE_THREAD)
+- unshare_flags |= CLONE_VM;
+- /*
+ * If unsharing vm, must also unshare signal handlers.
+ */
+ if (unshare_flags & CLONE_VM)
+ unshare_flags |= CLONE_SIGHAND;
+ /*
++ * If unsharing a signal handlers, must also unshare the signal queues.
++ */
++ if (unshare_flags & CLONE_SIGHAND)
++ unshare_flags |= CLONE_THREAD;
++ /*
+ * If unsharing namespace, must also unshare filesystem information.
+ */
+ if (unshare_flags & CLONE_NEWNS)
+diff --git a/lib/decompress_bunzip2.c b/lib/decompress_bunzip2.c
+index 6dd0335ea61b..0234361b24b8 100644
+--- a/lib/decompress_bunzip2.c
++++ b/lib/decompress_bunzip2.c
+@@ -743,12 +743,12 @@ exit_0:
+ }
+
+ #ifdef PREBOOT
+-STATIC int INIT decompress(unsigned char *buf, long len,
++STATIC int INIT __decompress(unsigned char *buf, long len,
+ long (*fill)(void*, unsigned long),
+ long (*flush)(void*, unsigned long),
+- unsigned char *outbuf,
++ unsigned char *outbuf, long olen,
+ long *pos,
+- void(*error)(char *x))
++ void (*error)(char *x))
+ {
+ return bunzip2(buf, len - 4, fill, flush, outbuf, pos, error);
+ }
+diff --git a/lib/decompress_inflate.c b/lib/decompress_inflate.c
+index d4c7891635ec..555c06bf20da 100644
+--- a/lib/decompress_inflate.c
++++ b/lib/decompress_inflate.c
+@@ -1,4 +1,5 @@
+ #ifdef STATIC
++#define PREBOOT
+ /* Pre-boot environment: included */
+
+ /* prevent inclusion of _LINUX_KERNEL_H in pre-boot environment: lots
+@@ -33,23 +34,23 @@ static long INIT nofill(void *buffer, unsigned long len)
+ }
+
+ /* Included from initramfs et al code */
+-STATIC int INIT gunzip(unsigned char *buf, long len,
++STATIC int INIT __gunzip(unsigned char *buf, long len,
+ long (*fill)(void*, unsigned long),
+ long (*flush)(void*, unsigned long),
+- unsigned char *out_buf,
++ unsigned char *out_buf, long out_len,
+ long *pos,
+ void(*error)(char *x)) {
+ u8 *zbuf;
+ struct z_stream_s *strm;
+ int rc;
+- size_t out_len;
+
+ rc = -1;
+ if (flush) {
+ out_len = 0x8000; /* 32 K */
+ out_buf = malloc(out_len);
+ } else {
+- out_len = ((size_t)~0) - (size_t)out_buf; /* no limit */
++ if (!out_len)
++ out_len = ((size_t)~0) - (size_t)out_buf; /* no limit */
+ }
+ if (!out_buf) {
+ error("Out of memory while allocating output buffer");
+@@ -181,4 +182,24 @@ gunzip_nomem1:
+ return rc; /* returns Z_OK (0) if successful */
+ }
+
+-#define decompress gunzip
++#ifndef PREBOOT
++STATIC int INIT gunzip(unsigned char *buf, long len,
++ long (*fill)(void*, unsigned long),
++ long (*flush)(void*, unsigned long),
++ unsigned char *out_buf,
++ long *pos,
++ void (*error)(char *x))
++{
++ return __gunzip(buf, len, fill, flush, out_buf, 0, pos, error);
++}
++#else
++STATIC int INIT __decompress(unsigned char *buf, long len,
++ long (*fill)(void*, unsigned long),
++ long (*flush)(void*, unsigned long),
++ unsigned char *out_buf, long out_len,
++ long *pos,
++ void (*error)(char *x))
++{
++ return __gunzip(buf, len, fill, flush, out_buf, out_len, pos, error);
++}
++#endif
+diff --git a/lib/decompress_unlz4.c b/lib/decompress_unlz4.c
+index 40f66ebe57b7..036fc882cd72 100644
+--- a/lib/decompress_unlz4.c
++++ b/lib/decompress_unlz4.c
+@@ -196,12 +196,12 @@ exit_0:
+ }
+
+ #ifdef PREBOOT
+-STATIC int INIT decompress(unsigned char *buf, long in_len,
++STATIC int INIT __decompress(unsigned char *buf, long in_len,
+ long (*fill)(void*, unsigned long),
+ long (*flush)(void*, unsigned long),
+- unsigned char *output,
++ unsigned char *output, long out_len,
+ long *posp,
+- void(*error)(char *x)
++ void (*error)(char *x)
+ )
+ {
+ return unlz4(buf, in_len - 4, fill, flush, output, posp, error);
+diff --git a/lib/decompress_unlzma.c b/lib/decompress_unlzma.c
+index 0be83af62b88..decb64629c14 100644
+--- a/lib/decompress_unlzma.c
++++ b/lib/decompress_unlzma.c
+@@ -667,13 +667,12 @@ exit_0:
+ }
+
+ #ifdef PREBOOT
+-STATIC int INIT decompress(unsigned char *buf, long in_len,
++STATIC int INIT __decompress(unsigned char *buf, long in_len,
+ long (*fill)(void*, unsigned long),
+ long (*flush)(void*, unsigned long),
+- unsigned char *output,
++ unsigned char *output, long out_len,
+ long *posp,
+- void(*error)(char *x)
+- )
++ void (*error)(char *x))
+ {
+ return unlzma(buf, in_len - 4, fill, flush, output, posp, error);
+ }
+diff --git a/lib/decompress_unlzo.c b/lib/decompress_unlzo.c
+index b94a31bdd87d..f4c158e3a022 100644
+--- a/lib/decompress_unlzo.c
++++ b/lib/decompress_unlzo.c
+@@ -31,6 +31,7 @@
+ */
+
+ #ifdef STATIC
++#define PREBOOT
+ #include "lzo/lzo1x_decompress_safe.c"
+ #else
+ #include <linux/decompress/unlzo.h>
+@@ -287,4 +288,14 @@ exit:
+ return ret;
+ }
+
+-#define decompress unlzo
++#ifdef PREBOOT
++STATIC int INIT __decompress(unsigned char *buf, long len,
++ long (*fill)(void*, unsigned long),
++ long (*flush)(void*, unsigned long),
++ unsigned char *out_buf, long olen,
++ long *pos,
++ void (*error)(char *x))
++{
++ return unlzo(buf, len, fill, flush, out_buf, pos, error);
++}
++#endif
+diff --git a/lib/decompress_unxz.c b/lib/decompress_unxz.c
+index b07a78340e9d..25d59a95bd66 100644
+--- a/lib/decompress_unxz.c
++++ b/lib/decompress_unxz.c
+@@ -394,4 +394,14 @@ error_alloc_state:
+ * This macro is used by architecture-specific files to decompress
+ * the kernel image.
+ */
+-#define decompress unxz
++#ifdef XZ_PREBOOT
++STATIC int INIT __decompress(unsigned char *buf, long len,
++ long (*fill)(void*, unsigned long),
++ long (*flush)(void*, unsigned long),
++ unsigned char *out_buf, long olen,
++ long *pos,
++ void (*error)(char *x))
++{
++ return unxz(buf, len, fill, flush, out_buf, pos, error);
++}
++#endif
+diff --git a/lib/rhashtable.c b/lib/rhashtable.c
+index 8609378e6505..cf910e48f8f2 100644
+--- a/lib/rhashtable.c
++++ b/lib/rhashtable.c
+@@ -612,6 +612,8 @@ next:
+ iter->skip = 0;
+ }
+
++ iter->p = NULL;
++
+ /* Ensure we see any new tables. */
+ smp_rmb();
+
+@@ -622,8 +624,6 @@ next:
+ return ERR_PTR(-EAGAIN);
+ }
+
+- iter->p = NULL;
+-
+ out:
+
+ return obj;
+diff --git a/mm/page_alloc.c b/mm/page_alloc.c
+index ebffa0e4a9c0..18490f3bd7f1 100644
+--- a/mm/page_alloc.c
++++ b/mm/page_alloc.c
+@@ -983,12 +983,15 @@ static int prep_new_page(struct page *page, unsigned int order, gfp_t gfp_flags,
+ set_page_owner(page, order, gfp_flags);
+
+ /*
+- * page->pfmemalloc is set when ALLOC_NO_WATERMARKS was necessary to
++ * page is set pfmemalloc when ALLOC_NO_WATERMARKS was necessary to
+ * allocate the page. The expectation is that the caller is taking
+ * steps that will free more memory. The caller should avoid the page
+ * being used for !PFMEMALLOC purposes.
+ */
+- page->pfmemalloc = !!(alloc_flags & ALLOC_NO_WATERMARKS);
++ if (alloc_flags & ALLOC_NO_WATERMARKS)
++ set_page_pfmemalloc(page);
++ else
++ clear_page_pfmemalloc(page);
+
+ return 0;
+ }
+diff --git a/mm/slab.c b/mm/slab.c
+index 7eb38dd1cefa..3dd2d1ff9d5d 100644
+--- a/mm/slab.c
++++ b/mm/slab.c
+@@ -1602,7 +1602,7 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags,
+ }
+
+ /* Record if ALLOC_NO_WATERMARKS was set when allocating the slab */
+- if (unlikely(page->pfmemalloc))
++ if (page_is_pfmemalloc(page))
+ pfmemalloc_active = true;
+
+ nr_pages = (1 << cachep->gfporder);
+@@ -1613,7 +1613,7 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags,
+ add_zone_page_state(page_zone(page),
+ NR_SLAB_UNRECLAIMABLE, nr_pages);
+ __SetPageSlab(page);
+- if (page->pfmemalloc)
++ if (page_is_pfmemalloc(page))
+ SetPageSlabPfmemalloc(page);
+
+ if (kmemcheck_enabled && !(cachep->flags & SLAB_NOTRACK)) {
+diff --git a/mm/slub.c b/mm/slub.c
+index 54c0876b43d5..08342c523a85 100644
+--- a/mm/slub.c
++++ b/mm/slub.c
+@@ -1427,7 +1427,7 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
+ inc_slabs_node(s, page_to_nid(page), page->objects);
+ page->slab_cache = s;
+ __SetPageSlab(page);
+- if (page->pfmemalloc)
++ if (page_is_pfmemalloc(page))
+ SetPageSlabPfmemalloc(page);
+
+ start = page_address(page);
+diff --git a/mm/vmscan.c b/mm/vmscan.c
+index 0d024fc8aa8e..1a17bd7c0ce5 100644
+--- a/mm/vmscan.c
++++ b/mm/vmscan.c
+@@ -1153,7 +1153,7 @@ cull_mlocked:
+ if (PageSwapCache(page))
+ try_to_free_swap(page);
+ unlock_page(page);
+- putback_lru_page(page);
++ list_add(&page->lru, &ret_pages);
+ continue;
+
+ activate_locked:
+diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
+index e97572b5d2cc..0ff6e1bbca91 100644
+--- a/net/bridge/br_forward.c
++++ b/net/bridge/br_forward.c
+@@ -42,6 +42,7 @@ int br_dev_queue_push_xmit(struct sock *sk, struct sk_buff *skb)
+ } else {
+ skb_push(skb, ETH_HLEN);
+ br_drop_fake_rtable(skb);
++ skb_sender_cpu_clear(skb);
+ dev_queue_xmit(skb);
+ }
+
+diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
+index e29ad70b3000..d1f910c0d586 100644
+--- a/net/bridge/br_mdb.c
++++ b/net/bridge/br_mdb.c
+@@ -348,7 +348,6 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
+ return -ENOMEM;
+ rcu_assign_pointer(*pp, p);
+
+- br_mdb_notify(br->dev, port, group, RTM_NEWMDB);
+ return 0;
+ }
+
+@@ -371,6 +370,7 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
+ if (!p || p->br != br || p->state == BR_STATE_DISABLED)
+ return -EINVAL;
+
++ memset(&ip, 0, sizeof(ip));
+ ip.proto = entry->addr.proto;
+ if (ip.proto == htons(ETH_P_IP))
+ ip.u.ip4 = entry->addr.u.ip4;
+@@ -417,6 +417,7 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry)
+ if (!netif_running(br->dev) || br->multicast_disabled)
+ return -EINVAL;
+
++ memset(&ip, 0, sizeof(ip));
+ ip.proto = entry->addr.proto;
+ if (ip.proto == htons(ETH_P_IP)) {
+ if (timer_pending(&br->ip4_other_query.timer))
+diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
+index 4b5c236998ff..a7559ef312bd 100644
+--- a/net/bridge/br_netlink.c
++++ b/net/bridge/br_netlink.c
+@@ -112,6 +112,8 @@ static inline size_t br_port_info_size(void)
+ + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
+ + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
+ + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
++ + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
++ + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
+ + 0;
+ }
+
+@@ -504,6 +506,8 @@ static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
+ [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
+ [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
+ [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
++ [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
++ [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
+ };
+
+ /* Change the state of the port and notify spanning tree */
+@@ -711,9 +715,17 @@ static int br_port_slave_changelink(struct net_device *brdev,
+ struct nlattr *tb[],
+ struct nlattr *data[])
+ {
++ struct net_bridge *br = netdev_priv(brdev);
++ int ret;
++
+ if (!data)
+ return 0;
+- return br_setport(br_port_get_rtnl(dev), data);
++
++ spin_lock_bh(&br->lock);
++ ret = br_setport(br_port_get_rtnl(dev), data);
++ spin_unlock_bh(&br->lock);
++
++ return ret;
+ }
+
+ static int br_port_fill_slave_info(struct sk_buff *skb,
+diff --git a/net/core/datagram.c b/net/core/datagram.c
+index b80fb91bb3f7..617088aee21d 100644
+--- a/net/core/datagram.c
++++ b/net/core/datagram.c
+@@ -131,6 +131,35 @@ out_noerr:
+ goto out;
+ }
+
++static struct sk_buff *skb_set_peeked(struct sk_buff *skb)
++{
++ struct sk_buff *nskb;
++
++ if (skb->peeked)
++ return skb;
++
++ /* We have to unshare an skb before modifying it. */
++ if (!skb_shared(skb))
++ goto done;
++
++ nskb = skb_clone(skb, GFP_ATOMIC);
++ if (!nskb)
++ return ERR_PTR(-ENOMEM);
++
++ skb->prev->next = nskb;
++ skb->next->prev = nskb;
++ nskb->prev = skb->prev;
++ nskb->next = skb->next;
++
++ consume_skb(skb);
++ skb = nskb;
++
++done:
++ skb->peeked = 1;
++
++ return skb;
++}
++
+ /**
+ * __skb_recv_datagram - Receive a datagram skbuff
+ * @sk: socket
+@@ -165,7 +194,9 @@ out_noerr:
+ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
+ int *peeked, int *off, int *err)
+ {
++ struct sk_buff_head *queue = &sk->sk_receive_queue;
+ struct sk_buff *skb, *last;
++ unsigned long cpu_flags;
+ long timeo;
+ /*
+ * Caller is allowed not to check sk->sk_err before skb_recv_datagram()
+@@ -184,8 +215,6 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
+ * Look at current nfs client by the way...
+ * However, this function was correct in any case. 8)
+ */
+- unsigned long cpu_flags;
+- struct sk_buff_head *queue = &sk->sk_receive_queue;
+ int _off = *off;
+
+ last = (struct sk_buff *)queue;
+@@ -199,7 +228,12 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
+ _off -= skb->len;
+ continue;
+ }
+- skb->peeked = 1;
++
++ skb = skb_set_peeked(skb);
++ error = PTR_ERR(skb);
++ if (IS_ERR(skb))
++ goto unlock_err;
++
+ atomic_inc(&skb->users);
+ } else
+ __skb_unlink(skb, queue);
+@@ -223,6 +257,8 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
+
+ return NULL;
+
++unlock_err:
++ spin_unlock_irqrestore(&queue->lock, cpu_flags);
+ no_packet:
+ *err = error;
+ return NULL;
+@@ -622,7 +658,8 @@ __sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len)
+ !skb->csum_complete_sw)
+ netdev_rx_csum_fault(skb->dev);
+ }
+- skb->csum_valid = !sum;
++ if (!skb_shared(skb))
++ skb->csum_valid = !sum;
+ return sum;
+ }
+ EXPORT_SYMBOL(__skb_checksum_complete_head);
+@@ -642,11 +679,13 @@ __sum16 __skb_checksum_complete(struct sk_buff *skb)
+ netdev_rx_csum_fault(skb->dev);
+ }
+
+- /* Save full packet checksum */
+- skb->csum = csum;
+- skb->ip_summed = CHECKSUM_COMPLETE;
+- skb->csum_complete_sw = 1;
+- skb->csum_valid = !sum;
++ if (!skb_shared(skb)) {
++ /* Save full packet checksum */
++ skb->csum = csum;
++ skb->ip_summed = CHECKSUM_COMPLETE;
++ skb->csum_complete_sw = 1;
++ skb->csum_valid = !sum;
++ }
+
+ return sum;
+ }
+diff --git a/net/core/dev.c b/net/core/dev.c
+index aa82f9ab6a36..a42b232805a5 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -672,10 +672,6 @@ int dev_get_iflink(const struct net_device *dev)
+ if (dev->netdev_ops && dev->netdev_ops->ndo_get_iflink)
+ return dev->netdev_ops->ndo_get_iflink(dev);
+
+- /* If dev->rtnl_link_ops is set, it's a virtual interface. */
+- if (dev->rtnl_link_ops)
+- return 0;
+-
+ return dev->ifindex;
+ }
+ EXPORT_SYMBOL(dev_get_iflink);
+@@ -3341,6 +3337,8 @@ static int enqueue_to_backlog(struct sk_buff *skb, int cpu,
+ local_irq_save(flags);
+
+ rps_lock(sd);
++ if (!netif_running(skb->dev))
++ goto drop;
+ qlen = skb_queue_len(&sd->input_pkt_queue);
+ if (qlen <= netdev_max_backlog && !skb_flow_limit(skb, qlen)) {
+ if (qlen) {
+@@ -3362,6 +3360,7 @@ enqueue:
+ goto enqueue;
+ }
+
++drop:
+ sd->dropped++;
+ rps_unlock(sd);
+
+@@ -3667,8 +3666,6 @@ static int __netif_receive_skb_core(struct sk_buff *skb, bool pfmemalloc)
+
+ pt_prev = NULL;
+
+- rcu_read_lock();
+-
+ another_round:
+ skb->skb_iif = skb->dev->ifindex;
+
+@@ -3678,7 +3675,7 @@ another_round:
+ skb->protocol == cpu_to_be16(ETH_P_8021AD)) {
+ skb = skb_vlan_untag(skb);
+ if (unlikely(!skb))
+- goto unlock;
++ goto out;
+ }
+
+ #ifdef CONFIG_NET_CLS_ACT
+@@ -3708,7 +3705,7 @@ skip_taps:
+ if (static_key_false(&ingress_needed)) {
+ skb = handle_ing(skb, &pt_prev, &ret, orig_dev);
+ if (!skb)
+- goto unlock;
++ goto out;
+ }
+
+ skb->tc_verd = 0;
+@@ -3725,7 +3722,7 @@ ncls:
+ if (vlan_do_receive(&skb))
+ goto another_round;
+ else if (unlikely(!skb))
+- goto unlock;
++ goto out;
+ }
+
+ rx_handler = rcu_dereference(skb->dev->rx_handler);
+@@ -3737,7 +3734,7 @@ ncls:
+ switch (rx_handler(&skb)) {
+ case RX_HANDLER_CONSUMED:
+ ret = NET_RX_SUCCESS;
+- goto unlock;
++ goto out;
+ case RX_HANDLER_ANOTHER:
+ goto another_round;
+ case RX_HANDLER_EXACT:
+@@ -3791,8 +3788,7 @@ drop:
+ ret = NET_RX_DROP;
+ }
+
+-unlock:
+- rcu_read_unlock();
++out:
+ return ret;
+ }
+
+@@ -3823,29 +3819,30 @@ static int __netif_receive_skb(struct sk_buff *skb)
+
+ static int netif_receive_skb_internal(struct sk_buff *skb)
+ {
++ int ret;
++
+ net_timestamp_check(netdev_tstamp_prequeue, skb);
+
+ if (skb_defer_rx_timestamp(skb))
+ return NET_RX_SUCCESS;
+
++ rcu_read_lock();
++
+ #ifdef CONFIG_RPS
+ if (static_key_false(&rps_needed)) {
+ struct rps_dev_flow voidflow, *rflow = &voidflow;
+- int cpu, ret;
+-
+- rcu_read_lock();
+-
+- cpu = get_rps_cpu(skb->dev, skb, &rflow);
++ int cpu = get_rps_cpu(skb->dev, skb, &rflow);
+
+ if (cpu >= 0) {
+ ret = enqueue_to_backlog(skb, cpu, &rflow->last_qtail);
+ rcu_read_unlock();
+ return ret;
+ }
+- rcu_read_unlock();
+ }
+ #endif
+- return __netif_receive_skb(skb);
++ ret = __netif_receive_skb(skb);
++ rcu_read_unlock();
++ return ret;
+ }
+
+ /**
+@@ -4390,8 +4387,10 @@ static int process_backlog(struct napi_struct *napi, int quota)
+ struct sk_buff *skb;
+
+ while ((skb = __skb_dequeue(&sd->process_queue))) {
++ rcu_read_lock();
+ local_irq_enable();
+ __netif_receive_skb(skb);
++ rcu_read_unlock();
+ local_irq_disable();
+ input_queue_head_incr(sd);
+ if (++work >= quota) {
+@@ -6027,6 +6026,7 @@ static void rollback_registered_many(struct list_head *head)
+ unlist_netdevice(dev);
+
+ dev->reg_state = NETREG_UNREGISTERING;
++ on_each_cpu(flush_backlog, dev, 1);
+ }
+
+ synchronize_net();
+@@ -6297,7 +6297,8 @@ static int netif_alloc_netdev_queues(struct net_device *dev)
+ struct netdev_queue *tx;
+ size_t sz = count * sizeof(*tx);
+
+- BUG_ON(count < 1 || count > 0xffff);
++ if (count < 1 || count > 0xffff)
++ return -EINVAL;
+
+ tx = kzalloc(sz, GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
+ if (!tx) {
+@@ -6650,8 +6651,6 @@ void netdev_run_todo(void)
+
+ dev->reg_state = NETREG_UNREGISTERED;
+
+- on_each_cpu(flush_backlog, dev, 1);
+-
+ netdev_wait_allrefs(dev);
+
+ /* paranoia */
+diff --git a/net/core/pktgen.c b/net/core/pktgen.c
+index 508155b283dd..043ea1867d0f 100644
+--- a/net/core/pktgen.c
++++ b/net/core/pktgen.c
+@@ -3490,8 +3490,10 @@ static int pktgen_thread_worker(void *arg)
+ pktgen_rem_thread(t);
+
+ /* Wait for kthread_stop */
+- while (!kthread_should_stop()) {
++ for (;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
++ if (kthread_should_stop())
++ break;
+ schedule();
+ }
+ __set_current_state(TASK_RUNNING);
+diff --git a/net/core/request_sock.c b/net/core/request_sock.c
+index 87b22c0bc08c..b42f0e26f89e 100644
+--- a/net/core/request_sock.c
++++ b/net/core/request_sock.c
+@@ -103,10 +103,16 @@ void reqsk_queue_destroy(struct request_sock_queue *queue)
+ spin_lock_bh(&queue->syn_wait_lock);
+ while ((req = lopt->syn_table[i]) != NULL) {
+ lopt->syn_table[i] = req->dl_next;
++ /* Because of following del_timer_sync(),
++ * we must release the spinlock here
++ * or risk a dead lock.
++ */
++ spin_unlock_bh(&queue->syn_wait_lock);
+ atomic_inc(&lopt->qlen_dec);
+- if (del_timer(&req->rsk_timer))
++ if (del_timer_sync(&req->rsk_timer))
+ reqsk_put(req);
+ reqsk_put(req);
++ spin_lock_bh(&queue->syn_wait_lock);
+ }
+ spin_unlock_bh(&queue->syn_wait_lock);
+ }
+diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
+index 8de36824018d..fe95cb704aaa 100644
+--- a/net/core/rtnetlink.c
++++ b/net/core/rtnetlink.c
+@@ -1287,10 +1287,6 @@ static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
+ [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED },
+ };
+
+-static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = {
+- [IFLA_VF_INFO] = { .type = NLA_NESTED },
+-};
+-
+ static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = {
+ [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) },
+ [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) },
+@@ -1437,96 +1433,98 @@ static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
+ return 0;
+ }
+
+-static int do_setvfinfo(struct net_device *dev, struct nlattr *attr)
++static int do_setvfinfo(struct net_device *dev, struct nlattr **tb)
+ {
+- int rem, err = -EINVAL;
+- struct nlattr *vf;
+ const struct net_device_ops *ops = dev->netdev_ops;
++ int err = -EINVAL;
+
+- nla_for_each_nested(vf, attr, rem) {
+- switch (nla_type(vf)) {
+- case IFLA_VF_MAC: {
+- struct ifla_vf_mac *ivm;
+- ivm = nla_data(vf);
+- err = -EOPNOTSUPP;
+- if (ops->ndo_set_vf_mac)
+- err = ops->ndo_set_vf_mac(dev, ivm->vf,
+- ivm->mac);
+- break;
+- }
+- case IFLA_VF_VLAN: {
+- struct ifla_vf_vlan *ivv;
+- ivv = nla_data(vf);
+- err = -EOPNOTSUPP;
+- if (ops->ndo_set_vf_vlan)
+- err = ops->ndo_set_vf_vlan(dev, ivv->vf,
+- ivv->vlan,
+- ivv->qos);
+- break;
+- }
+- case IFLA_VF_TX_RATE: {
+- struct ifla_vf_tx_rate *ivt;
+- struct ifla_vf_info ivf;
+- ivt = nla_data(vf);
+- err = -EOPNOTSUPP;
+- if (ops->ndo_get_vf_config)
+- err = ops->ndo_get_vf_config(dev, ivt->vf,
+- &ivf);
+- if (err)
+- break;
+- err = -EOPNOTSUPP;
+- if (ops->ndo_set_vf_rate)
+- err = ops->ndo_set_vf_rate(dev, ivt->vf,
+- ivf.min_tx_rate,
+- ivt->rate);
+- break;
+- }
+- case IFLA_VF_RATE: {
+- struct ifla_vf_rate *ivt;
+- ivt = nla_data(vf);
+- err = -EOPNOTSUPP;
+- if (ops->ndo_set_vf_rate)
+- err = ops->ndo_set_vf_rate(dev, ivt->vf,
+- ivt->min_tx_rate,
+- ivt->max_tx_rate);
+- break;
+- }
+- case IFLA_VF_SPOOFCHK: {
+- struct ifla_vf_spoofchk *ivs;
+- ivs = nla_data(vf);
+- err = -EOPNOTSUPP;
+- if (ops->ndo_set_vf_spoofchk)
+- err = ops->ndo_set_vf_spoofchk(dev, ivs->vf,
+- ivs->setting);
+- break;
+- }
+- case IFLA_VF_LINK_STATE: {
+- struct ifla_vf_link_state *ivl;
+- ivl = nla_data(vf);
+- err = -EOPNOTSUPP;
+- if (ops->ndo_set_vf_link_state)
+- err = ops->ndo_set_vf_link_state(dev, ivl->vf,
+- ivl->link_state);
+- break;
+- }
+- case IFLA_VF_RSS_QUERY_EN: {
+- struct ifla_vf_rss_query_en *ivrssq_en;
++ if (tb[IFLA_VF_MAC]) {
++ struct ifla_vf_mac *ivm = nla_data(tb[IFLA_VF_MAC]);
+
+- ivrssq_en = nla_data(vf);
+- err = -EOPNOTSUPP;
+- if (ops->ndo_set_vf_rss_query_en)
+- err = ops->ndo_set_vf_rss_query_en(dev,
+- ivrssq_en->vf,
+- ivrssq_en->setting);
+- break;
+- }
+- default:
+- err = -EINVAL;
+- break;
+- }
+- if (err)
+- break;
++ err = -EOPNOTSUPP;
++ if (ops->ndo_set_vf_mac)
++ err = ops->ndo_set_vf_mac(dev, ivm->vf,
++ ivm->mac);
++ if (err < 0)
++ return err;
++ }
++
++ if (tb[IFLA_VF_VLAN]) {
++ struct ifla_vf_vlan *ivv = nla_data(tb[IFLA_VF_VLAN]);
++
++ err = -EOPNOTSUPP;
++ if (ops->ndo_set_vf_vlan)
++ err = ops->ndo_set_vf_vlan(dev, ivv->vf, ivv->vlan,
++ ivv->qos);
++ if (err < 0)
++ return err;
++ }
++
++ if (tb[IFLA_VF_TX_RATE]) {
++ struct ifla_vf_tx_rate *ivt = nla_data(tb[IFLA_VF_TX_RATE]);
++ struct ifla_vf_info ivf;
++
++ err = -EOPNOTSUPP;
++ if (ops->ndo_get_vf_config)
++ err = ops->ndo_get_vf_config(dev, ivt->vf, &ivf);
++ if (err < 0)
++ return err;
++
++ err = -EOPNOTSUPP;
++ if (ops->ndo_set_vf_rate)
++ err = ops->ndo_set_vf_rate(dev, ivt->vf,
++ ivf.min_tx_rate,
++ ivt->rate);
++ if (err < 0)
++ return err;
++ }
++
++ if (tb[IFLA_VF_RATE]) {
++ struct ifla_vf_rate *ivt = nla_data(tb[IFLA_VF_RATE]);
++
++ err = -EOPNOTSUPP;
++ if (ops->ndo_set_vf_rate)
++ err = ops->ndo_set_vf_rate(dev, ivt->vf,
++ ivt->min_tx_rate,
++ ivt->max_tx_rate);
++ if (err < 0)
++ return err;
+ }
++
++ if (tb[IFLA_VF_SPOOFCHK]) {
++ struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]);
++
++ err = -EOPNOTSUPP;
++ if (ops->ndo_set_vf_spoofchk)
++ err = ops->ndo_set_vf_spoofchk(dev, ivs->vf,
++ ivs->setting);
++ if (err < 0)
++ return err;
++ }
++
++ if (tb[IFLA_VF_LINK_STATE]) {
++ struct ifla_vf_link_state *ivl = nla_data(tb[IFLA_VF_LINK_STATE]);
++
++ err = -EOPNOTSUPP;
++ if (ops->ndo_set_vf_link_state)
++ err = ops->ndo_set_vf_link_state(dev, ivl->vf,
++ ivl->link_state);
++ if (err < 0)
++ return err;
++ }
++
++ if (tb[IFLA_VF_RSS_QUERY_EN]) {
++ struct ifla_vf_rss_query_en *ivrssq_en;
++
++ err = -EOPNOTSUPP;
++ ivrssq_en = nla_data(tb[IFLA_VF_RSS_QUERY_EN]);
++ if (ops->ndo_set_vf_rss_query_en)
++ err = ops->ndo_set_vf_rss_query_en(dev, ivrssq_en->vf,
++ ivrssq_en->setting);
++ if (err < 0)
++ return err;
++ }
++
+ return err;
+ }
+
+@@ -1722,14 +1720,21 @@ static int do_setlink(const struct sk_buff *skb,
+ }
+
+ if (tb[IFLA_VFINFO_LIST]) {
++ struct nlattr *vfinfo[IFLA_VF_MAX + 1];
+ struct nlattr *attr;
+ int rem;
++
+ nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) {
+- if (nla_type(attr) != IFLA_VF_INFO) {
++ if (nla_type(attr) != IFLA_VF_INFO ||
++ nla_len(attr) < NLA_HDRLEN) {
+ err = -EINVAL;
+ goto errout;
+ }
+- err = do_setvfinfo(dev, attr);
++ err = nla_parse_nested(vfinfo, IFLA_VF_MAX, attr,
++ ifla_vf_policy);
++ if (err < 0)
++ goto errout;
++ err = do_setvfinfo(dev, vfinfo);
+ if (err < 0)
+ goto errout;
+ status |= DO_SETLINK_NOTIFY;
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 41ec02242ea7..a2e4e47b2839 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -340,7 +340,7 @@ struct sk_buff *build_skb(void *data, unsigned int frag_size)
+
+ if (skb && frag_size) {
+ skb->head_frag = 1;
+- if (virt_to_head_page(data)->pfmemalloc)
++ if (page_is_pfmemalloc(virt_to_head_page(data)))
+ skb->pfmemalloc = 1;
+ }
+ return skb;
+diff --git a/net/dsa/slave.c b/net/dsa/slave.c
+index 827cda560a55..57978c5b2c91 100644
+--- a/net/dsa/slave.c
++++ b/net/dsa/slave.c
+@@ -732,7 +732,8 @@ static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
+ return -ENODEV;
+
+ /* Use already configured phy mode */
+- p->phy_interface = p->phy->interface;
++ if (p->phy_interface == PHY_INTERFACE_MODE_NA)
++ p->phy_interface = p->phy->interface;
+ phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
+ p->phy_interface);
+
+diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
+index 90c0e8386116..574fad9cca05 100644
+--- a/net/ipv4/datagram.c
++++ b/net/ipv4/datagram.c
+@@ -20,7 +20,7 @@
+ #include <net/route.h>
+ #include <net/tcp_states.h>
+
+-int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
++int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+ {
+ struct inet_sock *inet = inet_sk(sk);
+ struct sockaddr_in *usin = (struct sockaddr_in *) uaddr;
+@@ -39,8 +39,6 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+
+ sk_dst_reset(sk);
+
+- lock_sock(sk);
+-
+ oif = sk->sk_bound_dev_if;
+ saddr = inet->inet_saddr;
+ if (ipv4_is_multicast(usin->sin_addr.s_addr)) {
+@@ -82,9 +80,19 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+ sk_dst_set(sk, &rt->dst);
+ err = 0;
+ out:
+- release_sock(sk);
+ return err;
+ }
++EXPORT_SYMBOL(__ip4_datagram_connect);
++
++int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
++{
++ int res;
++
++ lock_sock(sk);
++ res = __ip4_datagram_connect(sk, uaddr, addr_len);
++ release_sock(sk);
++ return res;
++}
+ EXPORT_SYMBOL(ip4_datagram_connect);
+
+ /* Because UDP xmit path can manipulate sk_dst_cache without holding
+diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
+index 09b62e17dd8c..0ca933db1b41 100644
+--- a/net/ipv4/fib_trie.c
++++ b/net/ipv4/fib_trie.c
+@@ -1780,8 +1780,6 @@ void fib_table_flush_external(struct fib_table *tb)
+ if (hlist_empty(&n->leaf)) {
+ put_child_root(pn, n->key, NULL);
+ node_free(n);
+- } else {
+- leaf_pull_suffix(pn, n);
+ }
+ }
+ }
+@@ -1852,8 +1850,6 @@ int fib_table_flush(struct fib_table *tb)
+ if (hlist_empty(&n->leaf)) {
+ put_child_root(pn, n->key, NULL);
+ node_free(n);
+- } else {
+- leaf_pull_suffix(pn, n);
+ }
+ }
+
+@@ -2457,7 +2453,7 @@ static struct key_vector *fib_route_get_idx(struct fib_route_iter *iter,
+ key = l->key + 1;
+ iter->pos++;
+
+- if (pos-- <= 0)
++ if (--pos <= 0)
+ break;
+
+ l = NULL;
+diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
+index 8976ca423a07..b27fc401c6a9 100644
+--- a/net/ipv4/inet_connection_sock.c
++++ b/net/ipv4/inet_connection_sock.c
+@@ -584,7 +584,7 @@ static bool reqsk_queue_unlink(struct request_sock_queue *queue,
+ }
+
+ spin_unlock(&queue->syn_wait_lock);
+- if (del_timer(&req->rsk_timer))
++ if (del_timer_sync(&req->rsk_timer))
+ reqsk_put(req);
+ return found;
+ }
+diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
+index cc1da6d9cb35..cae22a1a8777 100644
+--- a/net/ipv4/ip_fragment.c
++++ b/net/ipv4/ip_fragment.c
+@@ -342,7 +342,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
+ ihl = ip_hdrlen(skb);
+
+ /* Determine the position of this fragment. */
+- end = offset + skb->len - ihl;
++ end = offset + skb->len - skb_network_offset(skb) - ihl;
+ err = -EINVAL;
+
+ /* Is this the final fragment? */
+@@ -372,7 +372,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
+ goto err;
+
+ err = -ENOMEM;
+- if (!pskb_pull(skb, ihl))
++ if (!pskb_pull(skb, skb_network_offset(skb) + ihl))
+ goto err;
+
+ err = pskb_trim_rcsum(skb, end - offset);
+@@ -613,6 +613,9 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
+ iph->frag_off = qp->q.max_size ? htons(IP_DF) : 0;
+ iph->tot_len = htons(len);
+ iph->tos |= ecn;
++
++ ip_send_check(iph);
++
+ IP_INC_STATS_BH(net, IPSTATS_MIB_REASMOKS);
+ qp->q.fragments = NULL;
+ qp->q.fragments_tail = NULL;
+diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
+index 4c2c3ba4ba65..626d9e56a6bd 100644
+--- a/net/ipv4/ip_tunnel.c
++++ b/net/ipv4/ip_tunnel.c
+@@ -586,7 +586,8 @@ int ip_tunnel_encap(struct sk_buff *skb, struct ip_tunnel *t,
+ EXPORT_SYMBOL(ip_tunnel_encap);
+
+ static int tnl_update_pmtu(struct net_device *dev, struct sk_buff *skb,
+- struct rtable *rt, __be16 df)
++ struct rtable *rt, __be16 df,
++ const struct iphdr *inner_iph)
+ {
+ struct ip_tunnel *tunnel = netdev_priv(dev);
+ int pkt_size = skb->len - tunnel->hlen - dev->hard_header_len;
+@@ -603,7 +604,8 @@ static int tnl_update_pmtu(struct net_device *dev, struct sk_buff *skb,
+
+ if (skb->protocol == htons(ETH_P_IP)) {
+ if (!skb_is_gso(skb) &&
+- (df & htons(IP_DF)) && mtu < pkt_size) {
++ (inner_iph->frag_off & htons(IP_DF)) &&
++ mtu < pkt_size) {
+ memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
+ icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
+ return -E2BIG;
+@@ -737,7 +739,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
+ goto tx_error;
+ }
+
+- if (tnl_update_pmtu(dev, skb, rt, tnl_params->frag_off)) {
++ if (tnl_update_pmtu(dev, skb, rt, tnl_params->frag_off, inner_iph)) {
+ ip_rt_put(rt);
+ goto tx_error;
+ }
+diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
+index fc1c658ec6c1..441ca6f38981 100644
+--- a/net/ipv4/tcp_ipv4.c
++++ b/net/ipv4/tcp_ipv4.c
+@@ -1348,7 +1348,7 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
+ req = inet_csk_search_req(sk, th->source, iph->saddr, iph->daddr);
+ if (req) {
+ nsk = tcp_check_req(sk, skb, req, false);
+- if (!nsk)
++ if (!nsk || nsk == sk)
+ reqsk_put(req);
+ return nsk;
+ }
+diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
+index 83aa604f9273..1b8c5ba7d5f7 100644
+--- a/net/ipv4/udp.c
++++ b/net/ipv4/udp.c
+@@ -1995,12 +1995,19 @@ void udp_v4_early_demux(struct sk_buff *skb)
+
+ skb->sk = sk;
+ skb->destructor = sock_efree;
+- dst = sk->sk_rx_dst;
++ dst = READ_ONCE(sk->sk_rx_dst);
+
+ if (dst)
+ dst = dst_check(dst, 0);
+- if (dst)
+- skb_dst_set_noref(skb, dst);
++ if (dst) {
++ /* DST_NOCACHE can not be used without taking a reference */
++ if (dst->flags & DST_NOCACHE) {
++ if (likely(atomic_inc_not_zero(&dst->__refcnt)))
++ skb_dst_set(skb, dst);
++ } else {
++ skb_dst_set_noref(skb, dst);
++ }
++ }
+ }
+
+ int udp_rcv(struct sk_buff *skb)
+diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
+index 62d908e64eeb..b10a88986a98 100644
+--- a/net/ipv6/datagram.c
++++ b/net/ipv6/datagram.c
+@@ -40,7 +40,7 @@ static bool ipv6_mapped_addr_any(const struct in6_addr *a)
+ return ipv6_addr_v4mapped(a) && (a->s6_addr32[3] == 0);
+ }
+
+-int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
++static int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+ {
+ struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
+ struct inet_sock *inet = inet_sk(sk);
+@@ -56,7 +56,7 @@ int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+ if (usin->sin6_family == AF_INET) {
+ if (__ipv6_only_sock(sk))
+ return -EAFNOSUPPORT;
+- err = ip4_datagram_connect(sk, uaddr, addr_len);
++ err = __ip4_datagram_connect(sk, uaddr, addr_len);
+ goto ipv4_connected;
+ }
+
+@@ -98,9 +98,9 @@ int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+ sin.sin_addr.s_addr = daddr->s6_addr32[3];
+ sin.sin_port = usin->sin6_port;
+
+- err = ip4_datagram_connect(sk,
+- (struct sockaddr *) &sin,
+- sizeof(sin));
++ err = __ip4_datagram_connect(sk,
++ (struct sockaddr *) &sin,
++ sizeof(sin));
+
+ ipv4_connected:
+ if (err)
+@@ -204,6 +204,16 @@ out:
+ fl6_sock_release(flowlabel);
+ return err;
+ }
++
++int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
++{
++ int res;
++
++ lock_sock(sk);
++ res = __ip6_datagram_connect(sk, uaddr, addr_len);
++ release_sock(sk);
++ return res;
++}
+ EXPORT_SYMBOL_GPL(ip6_datagram_connect);
+
+ int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *uaddr,
+diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
+index f2e464eba5ef..57990c929cd8 100644
+--- a/net/ipv6/ip6_input.c
++++ b/net/ipv6/ip6_input.c
+@@ -331,10 +331,10 @@ int ip6_mc_input(struct sk_buff *skb)
+ if (offset < 0)
+ goto out;
+
+- if (!ipv6_is_mld(skb, nexthdr, offset))
+- goto out;
++ if (ipv6_is_mld(skb, nexthdr, offset))
++ deliver = true;
+
+- deliver = true;
++ goto out;
+ }
+ /* unknown RA - process it normally */
+ }
+diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
+index e893cd18612f..08b62047c67f 100644
+--- a/net/ipv6/ip6_offload.c
++++ b/net/ipv6/ip6_offload.c
+@@ -292,8 +292,6 @@ static struct packet_offload ipv6_packet_offload __read_mostly = {
+ static const struct net_offload sit_offload = {
+ .callbacks = {
+ .gso_segment = ipv6_gso_segment,
+- .gro_receive = ipv6_gro_receive,
+- .gro_complete = ipv6_gro_complete,
+ },
+ };
+
+diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
+index 3adffb300238..e541d68dba8b 100644
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -946,7 +946,7 @@ static struct sock *tcp_v6_hnd_req(struct sock *sk, struct sk_buff *skb)
+ &ipv6_hdr(skb)->daddr, tcp_v6_iif(skb));
+ if (req) {
+ nsk = tcp_check_req(sk, skb, req, false);
+- if (!nsk)
++ if (!nsk || nsk == sk)
+ reqsk_put(req);
+ return nsk;
+ }
+diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
+index 667111ee6a20..5787f15a3a12 100644
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -301,9 +301,6 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
+ if (tx->sdata->vif.type == NL80211_IFTYPE_WDS)
+ return TX_CONTINUE;
+
+- if (tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
+- return TX_CONTINUE;
+-
+ if (tx->flags & IEEE80211_TX_PS_BUFFERED)
+ return TX_CONTINUE;
+
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index bf6e76643f78..4856d975492d 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -355,25 +355,52 @@ err1:
+ return NULL;
+ }
+
++
++static void
++__netlink_set_ring(struct sock *sk, struct nl_mmap_req *req, bool tx_ring, void **pg_vec,
++ unsigned int order)
++{
++ struct netlink_sock *nlk = nlk_sk(sk);
++ struct sk_buff_head *queue;
++ struct netlink_ring *ring;
++
++ queue = tx_ring ? &sk->sk_write_queue : &sk->sk_receive_queue;
++ ring = tx_ring ? &nlk->tx_ring : &nlk->rx_ring;
++
++ spin_lock_bh(&queue->lock);
++
++ ring->frame_max = req->nm_frame_nr - 1;
++ ring->head = 0;
++ ring->frame_size = req->nm_frame_size;
++ ring->pg_vec_pages = req->nm_block_size / PAGE_SIZE;
++
++ swap(ring->pg_vec_len, req->nm_block_nr);
++ swap(ring->pg_vec_order, order);
++ swap(ring->pg_vec, pg_vec);
++
++ __skb_queue_purge(queue);
++ spin_unlock_bh(&queue->lock);
++
++ WARN_ON(atomic_read(&nlk->mapped));
++
++ if (pg_vec)
++ free_pg_vec(pg_vec, order, req->nm_block_nr);
++}
++
+ static int netlink_set_ring(struct sock *sk, struct nl_mmap_req *req,
+- bool closing, bool tx_ring)
++ bool tx_ring)
+ {
+ struct netlink_sock *nlk = nlk_sk(sk);
+ struct netlink_ring *ring;
+- struct sk_buff_head *queue;
+ void **pg_vec = NULL;
+ unsigned int order = 0;
+- int err;
+
+ ring = tx_ring ? &nlk->tx_ring : &nlk->rx_ring;
+- queue = tx_ring ? &sk->sk_write_queue : &sk->sk_receive_queue;
+
+- if (!closing) {
+- if (atomic_read(&nlk->mapped))
+- return -EBUSY;
+- if (atomic_read(&ring->pending))
+- return -EBUSY;
+- }
++ if (atomic_read(&nlk->mapped))
++ return -EBUSY;
++ if (atomic_read(&ring->pending))
++ return -EBUSY;
+
+ if (req->nm_block_nr) {
+ if (ring->pg_vec != NULL)
+@@ -405,31 +432,19 @@ static int netlink_set_ring(struct sock *sk, struct nl_mmap_req *req,
+ return -EINVAL;
+ }
+
+- err = -EBUSY;
+ mutex_lock(&nlk->pg_vec_lock);
+- if (closing || atomic_read(&nlk->mapped) == 0) {
+- err = 0;
+- spin_lock_bh(&queue->lock);
+-
+- ring->frame_max = req->nm_frame_nr - 1;
+- ring->head = 0;
+- ring->frame_size = req->nm_frame_size;
+- ring->pg_vec_pages = req->nm_block_size / PAGE_SIZE;
+-
+- swap(ring->pg_vec_len, req->nm_block_nr);
+- swap(ring->pg_vec_order, order);
+- swap(ring->pg_vec, pg_vec);
+-
+- __skb_queue_purge(queue);
+- spin_unlock_bh(&queue->lock);
+-
+- WARN_ON(atomic_read(&nlk->mapped));
++ if (atomic_read(&nlk->mapped) == 0) {
++ __netlink_set_ring(sk, req, tx_ring, pg_vec, order);
++ mutex_unlock(&nlk->pg_vec_lock);
++ return 0;
+ }
++
+ mutex_unlock(&nlk->pg_vec_lock);
+
+ if (pg_vec)
+ free_pg_vec(pg_vec, order, req->nm_block_nr);
+- return err;
++
++ return -EBUSY;
+ }
+
+ static void netlink_mm_open(struct vm_area_struct *vma)
+@@ -898,10 +913,10 @@ static void netlink_sock_destruct(struct sock *sk)
+
+ memset(&req, 0, sizeof(req));
+ if (nlk->rx_ring.pg_vec)
+- netlink_set_ring(sk, &req, true, false);
++ __netlink_set_ring(sk, &req, false, NULL, 0);
+ memset(&req, 0, sizeof(req));
+ if (nlk->tx_ring.pg_vec)
+- netlink_set_ring(sk, &req, true, true);
++ __netlink_set_ring(sk, &req, true, NULL, 0);
+ }
+ #endif /* CONFIG_NETLINK_MMAP */
+
+@@ -1079,6 +1094,11 @@ static int netlink_insert(struct sock *sk, u32 portid)
+
+ err = __netlink_insert(table, sk);
+ if (err) {
++ /* In case the hashtable backend returns with -EBUSY
++ * from here, it must not escape to the caller.
++ */
++ if (unlikely(err == -EBUSY))
++ err = -EOVERFLOW;
+ if (err == -EEXIST)
+ err = -EADDRINUSE;
+ nlk_sk(sk)->portid = 0;
+@@ -2197,7 +2217,7 @@ static int netlink_setsockopt(struct socket *sock, int level, int optname,
+ return -EINVAL;
+ if (copy_from_user(&req, optval, sizeof(req)))
+ return -EFAULT;
+- err = netlink_set_ring(sk, &req, false,
++ err = netlink_set_ring(sk, &req,
+ optname == NETLINK_TX_RING);
+ break;
+ }
+diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
+index ed54ec533836..b33fed6d1584 100644
+--- a/net/nfc/nci/hci.c
++++ b/net/nfc/nci/hci.c
+@@ -233,7 +233,7 @@ int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate, u8 cmd,
+ r = nci_request(ndev, nci_hci_send_data_req, (unsigned long)&data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
+
+- if (r == NCI_STATUS_OK)
++ if (r == NCI_STATUS_OK && skb)
+ *skb = conn_info->rx_skb;
+
+ return r;
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index fe1610ddeacf..e1ea5d43b01e 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -2307,7 +2307,8 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
+ }
+ tp_len = tpacket_fill_skb(po, skb, ph, dev, size_max, proto,
+ addr, hlen);
+- if (tp_len > dev->mtu + dev->hard_header_len) {
++ if (likely(tp_len >= 0) &&
++ tp_len > dev->mtu + dev->hard_header_len) {
+ struct ethhdr *ehdr;
+ /* Earlier code assumed this would be a VLAN pkt,
+ * double-check this now that we have the actual
+@@ -2688,7 +2689,7 @@ static int packet_release(struct socket *sock)
+ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto)
+ {
+ struct packet_sock *po = pkt_sk(sk);
+- const struct net_device *dev_curr;
++ struct net_device *dev_curr;
+ __be16 proto_curr;
+ bool need_rehook;
+
+@@ -2712,15 +2713,13 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto)
+
+ po->num = proto;
+ po->prot_hook.type = proto;
+-
+- if (po->prot_hook.dev)
+- dev_put(po->prot_hook.dev);
+-
+ po->prot_hook.dev = dev;
+
+ po->ifindex = dev ? dev->ifindex : 0;
+ packet_cached_dev_assign(po, dev);
+ }
++ if (dev_curr)
++ dev_put(dev_curr);
+
+ if (proto == 0 || !need_rehook)
+ goto out_unlock;
+diff --git a/net/rds/info.c b/net/rds/info.c
+index 9a6b4f66187c..140a44a5f7b7 100644
+--- a/net/rds/info.c
++++ b/net/rds/info.c
+@@ -176,7 +176,7 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
+
+ /* check for all kinds of wrapping and the like */
+ start = (unsigned long)optval;
+- if (len < 0 || len + PAGE_SIZE - 1 < len || start + len < start) {
++ if (len < 0 || len > INT_MAX - PAGE_SIZE + 1 || start + len < start) {
+ ret = -EINVAL;
+ goto out;
+ }
+diff --git a/net/sched/act_api.c b/net/sched/act_api.c
+index 3d43e4979f27..f8d9c2a2c451 100644
+--- a/net/sched/act_api.c
++++ b/net/sched/act_api.c
+@@ -45,7 +45,7 @@ void tcf_hash_destroy(struct tc_action *a)
+ }
+ EXPORT_SYMBOL(tcf_hash_destroy);
+
+-int tcf_hash_release(struct tc_action *a, int bind)
++int __tcf_hash_release(struct tc_action *a, bool bind, bool strict)
+ {
+ struct tcf_common *p = a->priv;
+ int ret = 0;
+@@ -53,7 +53,7 @@ int tcf_hash_release(struct tc_action *a, int bind)
+ if (p) {
+ if (bind)
+ p->tcfc_bindcnt--;
+- else if (p->tcfc_bindcnt > 0)
++ else if (strict && p->tcfc_bindcnt > 0)
+ return -EPERM;
+
+ p->tcfc_refcnt--;
+@@ -64,9 +64,10 @@ int tcf_hash_release(struct tc_action *a, int bind)
+ ret = 1;
+ }
+ }
++
+ return ret;
+ }
+-EXPORT_SYMBOL(tcf_hash_release);
++EXPORT_SYMBOL(__tcf_hash_release);
+
+ static int tcf_dump_walker(struct sk_buff *skb, struct netlink_callback *cb,
+ struct tc_action *a)
+@@ -136,7 +137,7 @@ static int tcf_del_walker(struct sk_buff *skb, struct tc_action *a)
+ head = &hinfo->htab[tcf_hash(i, hinfo->hmask)];
+ hlist_for_each_entry_safe(p, n, head, tcfc_head) {
+ a->priv = p;
+- ret = tcf_hash_release(a, 0);
++ ret = __tcf_hash_release(a, false, true);
+ if (ret == ACT_P_DELETED) {
+ module_put(a->ops->owner);
+ n_i++;
+@@ -413,7 +414,7 @@ int tcf_action_destroy(struct list_head *actions, int bind)
+ int ret = 0;
+
+ list_for_each_entry_safe(a, tmp, actions, list) {
+- ret = tcf_hash_release(a, bind);
++ ret = __tcf_hash_release(a, bind, true);
+ if (ret == ACT_P_DELETED)
+ module_put(a->ops->owner);
+ else if (ret < 0)
+diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c
+index dc6a2d324bd8..521ffca91228 100644
+--- a/net/sched/act_bpf.c
++++ b/net/sched/act_bpf.c
+@@ -27,9 +27,10 @@
+ struct tcf_bpf_cfg {
+ struct bpf_prog *filter;
+ struct sock_filter *bpf_ops;
+- char *bpf_name;
++ const char *bpf_name;
+ u32 bpf_fd;
+ u16 bpf_num_ops;
++ bool is_ebpf;
+ };
+
+ static int tcf_bpf(struct sk_buff *skb, const struct tc_action *act,
+@@ -200,6 +201,7 @@ static int tcf_bpf_init_from_ops(struct nlattr **tb, struct tcf_bpf_cfg *cfg)
+ cfg->bpf_ops = bpf_ops;
+ cfg->bpf_num_ops = bpf_num_ops;
+ cfg->filter = fp;
++ cfg->is_ebpf = false;
+
+ return 0;
+ }
+@@ -234,18 +236,40 @@ static int tcf_bpf_init_from_efd(struct nlattr **tb, struct tcf_bpf_cfg *cfg)
+ cfg->bpf_fd = bpf_fd;
+ cfg->bpf_name = name;
+ cfg->filter = fp;
++ cfg->is_ebpf = true;
+
+ return 0;
+ }
+
++static void tcf_bpf_cfg_cleanup(const struct tcf_bpf_cfg *cfg)
++{
++ if (cfg->is_ebpf)
++ bpf_prog_put(cfg->filter);
++ else
++ bpf_prog_destroy(cfg->filter);
++
++ kfree(cfg->bpf_ops);
++ kfree(cfg->bpf_name);
++}
++
++static void tcf_bpf_prog_fill_cfg(const struct tcf_bpf *prog,
++ struct tcf_bpf_cfg *cfg)
++{
++ cfg->is_ebpf = tcf_bpf_is_ebpf(prog);
++ cfg->filter = prog->filter;
++
++ cfg->bpf_ops = prog->bpf_ops;
++ cfg->bpf_name = prog->bpf_name;
++}
++
+ static int tcf_bpf_init(struct net *net, struct nlattr *nla,
+ struct nlattr *est, struct tc_action *act,
+ int replace, int bind)
+ {
+ struct nlattr *tb[TCA_ACT_BPF_MAX + 1];
++ struct tcf_bpf_cfg cfg, old;
+ struct tc_act_bpf *parm;
+ struct tcf_bpf *prog;
+- struct tcf_bpf_cfg cfg;
+ bool is_bpf, is_ebpf;
+ int ret;
+
+@@ -294,6 +318,9 @@ static int tcf_bpf_init(struct net *net, struct nlattr *nla,
+ prog = to_bpf(act);
+ spin_lock_bh(&prog->tcf_lock);
+
++ if (ret != ACT_P_CREATED)
++ tcf_bpf_prog_fill_cfg(prog, &old);
++
+ prog->bpf_ops = cfg.bpf_ops;
+ prog->bpf_name = cfg.bpf_name;
+
+@@ -309,29 +336,22 @@ static int tcf_bpf_init(struct net *net, struct nlattr *nla,
+
+ if (ret == ACT_P_CREATED)
+ tcf_hash_insert(act);
++ else
++ tcf_bpf_cfg_cleanup(&old);
+
+ return ret;
+
+ destroy_fp:
+- if (is_ebpf)
+- bpf_prog_put(cfg.filter);
+- else
+- bpf_prog_destroy(cfg.filter);
+-
+- kfree(cfg.bpf_ops);
+- kfree(cfg.bpf_name);
+-
++ tcf_bpf_cfg_cleanup(&cfg);
+ return ret;
+ }
+
+ static void tcf_bpf_cleanup(struct tc_action *act, int bind)
+ {
+- const struct tcf_bpf *prog = act->priv;
++ struct tcf_bpf_cfg tmp;
+
+- if (tcf_bpf_is_ebpf(prog))
+- bpf_prog_put(prog->filter);
+- else
+- bpf_prog_destroy(prog->filter);
++ tcf_bpf_prog_fill_cfg(act->priv, &tmp);
++ tcf_bpf_cfg_cleanup(&tmp);
+ }
+
+ static struct tc_action_ops act_bpf_ops __read_mostly = {
+diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
+index 91bd9c19471d..c0b86f2bfe22 100644
+--- a/net/sched/cls_bpf.c
++++ b/net/sched/cls_bpf.c
+@@ -364,7 +364,7 @@ static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
+ goto errout;
+
+ if (oldprog) {
+- list_replace_rcu(&prog->link, &oldprog->link);
++ list_replace_rcu(&oldprog->link, &prog->link);
+ tcf_unbind_filter(tp, &oldprog->res);
+ call_rcu(&oldprog->rcu, __cls_bpf_delete_prog);
+ } else {
+diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
+index a620c4e288a5..75df923f5c03 100644
+--- a/net/sched/cls_flow.c
++++ b/net/sched/cls_flow.c
+@@ -419,6 +419,8 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
+ if (!fnew)
+ goto err2;
+
++ tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
++
+ fold = (struct flow_filter *)*arg;
+ if (fold) {
+ err = -EINVAL;
+@@ -480,7 +482,6 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
+ fnew->mask = ~0U;
+ fnew->tp = tp;
+ get_random_bytes(&fnew->hashrnd, 4);
+- tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
+ }
+
+ fnew->perturb_timer.function = flow_perturbation;
+@@ -520,7 +521,7 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
+ if (*arg == 0)
+ list_add_tail_rcu(&fnew->list, &head->filters);
+ else
+- list_replace_rcu(&fnew->list, &fold->list);
++ list_replace_rcu(&fold->list, &fnew->list);
+
+ *arg = (unsigned long)fnew;
+
+diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
+index c244c45b78d7..9291598b5aad 100644
+--- a/net/sched/sch_fq_codel.c
++++ b/net/sched/sch_fq_codel.c
+@@ -162,10 +162,10 @@ static unsigned int fq_codel_drop(struct Qdisc *sch)
+ skb = dequeue_head(flow);
+ len = qdisc_pkt_len(skb);
+ q->backlogs[idx] -= len;
+- kfree_skb(skb);
+ sch->q.qlen--;
+ qdisc_qstats_drop(sch);
+ qdisc_qstats_backlog_dec(sch, skb);
++ kfree_skb(skb);
+ flow->dropped++;
+ return idx;
+ }
+diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
+index 1d4fe24af06a..d109d308ec3a 100644
+--- a/net/sunrpc/xprt.c
++++ b/net/sunrpc/xprt.c
+@@ -611,6 +611,7 @@ static void xprt_autoclose(struct work_struct *work)
+ xprt->ops->close(xprt);
+ clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
+ xprt_release_write(xprt, NULL);
++ wake_up_bit(&xprt->state, XPRT_LOCKED);
+ }
+
+ /**
+@@ -720,6 +721,7 @@ void xprt_unlock_connect(struct rpc_xprt *xprt, void *cookie)
+ xprt->ops->release_xprt(xprt, NULL);
+ out:
+ spin_unlock_bh(&xprt->transport_lock);
++ wake_up_bit(&xprt->state, XPRT_LOCKED);
+ }
+
+ /**
+@@ -1389,6 +1391,10 @@ out:
+ static void xprt_destroy(struct rpc_xprt *xprt)
+ {
+ dprintk("RPC: destroying transport %p\n", xprt);
++
++ /* Exclude transport connect/disconnect handlers */
++ wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_UNINTERRUPTIBLE);
++
+ del_timer_sync(&xprt->timer);
+
+ rpc_xprt_debugfs_unregister(xprt);
+diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
+index 66891e32c5e3..5e3ad598d3f5 100644
+--- a/net/sunrpc/xprtsock.c
++++ b/net/sunrpc/xprtsock.c
+@@ -834,6 +834,7 @@ static void xs_reset_transport(struct sock_xprt *transport)
+ sk->sk_user_data = NULL;
+
+ xs_restore_old_callbacks(transport, sk);
++ xprt_clear_connected(xprt);
+ write_unlock_bh(&sk->sk_callback_lock);
+ xs_sock_reset_connection_flags(xprt);
+
+@@ -1433,6 +1434,7 @@ out:
+ static void xs_tcp_state_change(struct sock *sk)
+ {
+ struct rpc_xprt *xprt;
++ struct sock_xprt *transport;
+
+ read_lock_bh(&sk->sk_callback_lock);
+ if (!(xprt = xprt_from_sock(sk)))
+@@ -1444,13 +1446,12 @@ static void xs_tcp_state_change(struct sock *sk)
+ sock_flag(sk, SOCK_ZAPPED),
+ sk->sk_shutdown);
+
++ transport = container_of(xprt, struct sock_xprt, xprt);
+ trace_rpc_socket_state_change(xprt, sk->sk_socket);
+ switch (sk->sk_state) {
+ case TCP_ESTABLISHED:
+ spin_lock(&xprt->transport_lock);
+ if (!xprt_test_and_set_connected(xprt)) {
+- struct sock_xprt *transport = container_of(xprt,
+- struct sock_xprt, xprt);
+
+ /* Reset TCP record info */
+ transport->tcp_offset = 0;
+@@ -1459,6 +1460,8 @@ static void xs_tcp_state_change(struct sock *sk)
+ transport->tcp_flags =
+ TCP_RCV_COPY_FRAGHDR | TCP_RCV_COPY_XID;
+ xprt->connect_cookie++;
++ clear_bit(XPRT_SOCK_CONNECTING, &transport->sock_state);
++ xprt_clear_connecting(xprt);
+
+ xprt_wake_pending_tasks(xprt, -EAGAIN);
+ }
+@@ -1494,6 +1497,9 @@ static void xs_tcp_state_change(struct sock *sk)
+ smp_mb__after_atomic();
+ break;
+ case TCP_CLOSE:
++ if (test_and_clear_bit(XPRT_SOCK_CONNECTING,
++ &transport->sock_state))
++ xprt_clear_connecting(xprt);
+ xs_sock_mark_closed(xprt);
+ }
+ out:
+@@ -2110,6 +2116,7 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
+ /* Tell the socket layer to start connecting... */
+ xprt->stat.connect_count++;
+ xprt->stat.connect_start = jiffies;
++ set_bit(XPRT_SOCK_CONNECTING, &transport->sock_state);
+ ret = kernel_connect(sock, xs_addr(xprt), xprt->addrlen, O_NONBLOCK);
+ switch (ret) {
+ case 0:
+@@ -2174,7 +2181,6 @@ static void xs_tcp_setup_socket(struct work_struct *work)
+ case -EINPROGRESS:
+ case -EALREADY:
+ xprt_unlock_connect(xprt, transport);
+- xprt_clear_connecting(xprt);
+ return;
+ case -EINVAL:
+ /* Happens, for instance, if the user specified a link
+@@ -2216,13 +2222,14 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task)
+
+ WARN_ON_ONCE(!xprt_lock_connect(xprt, task, transport));
+
+- /* Start by resetting any existing state */
+- xs_reset_transport(transport);
+-
+- if (transport->sock != NULL && !RPC_IS_SOFTCONN(task)) {
++ if (transport->sock != NULL) {
+ dprintk("RPC: xs_connect delayed xprt %p for %lu "
+ "seconds\n",
+ xprt, xprt->reestablish_timeout / HZ);
++
++ /* Start by resetting any existing state */
++ xs_reset_transport(transport);
++
+ queue_delayed_work(rpciod_workqueue,
+ &transport->connect_worker,
+ xprt->reestablish_timeout);
+diff --git a/net/tipc/socket.c b/net/tipc/socket.c
+index f485600c4507..20cc6df07157 100644
+--- a/net/tipc/socket.c
++++ b/net/tipc/socket.c
+@@ -2009,6 +2009,7 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
+ res = tipc_sk_create(sock_net(sock->sk), new_sock, 0, 1);
+ if (res)
+ goto exit;
++ security_sk_clone(sock->sk, new_sock->sk);
+
+ new_sk = new_sock->sk;
+ new_tsock = tipc_sk(new_sk);
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 91f6928560e1..6fe862594e9b 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -1134,7 +1134,7 @@ static const struct hda_fixup alc880_fixups[] = {
+ /* override all pins as BIOS on old Amilo is broken */
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+- { 0x14, 0x0121411f }, /* HP */
++ { 0x14, 0x0121401f }, /* HP */
+ { 0x15, 0x99030120 }, /* speaker */
+ { 0x16, 0x99030130 }, /* bass speaker */
+ { 0x17, 0x411111f0 }, /* N/A */
+@@ -1154,7 +1154,7 @@ static const struct hda_fixup alc880_fixups[] = {
+ /* almost compatible with FUJITSU, but no bass and SPDIF */
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+- { 0x14, 0x0121411f }, /* HP */
++ { 0x14, 0x0121401f }, /* HP */
+ { 0x15, 0x99030120 }, /* speaker */
+ { 0x16, 0x411111f0 }, /* N/A */
+ { 0x17, 0x411111f0 }, /* N/A */
+@@ -1363,7 +1363,7 @@ static const struct snd_pci_quirk alc880_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x161f, 0x203d, "W810", ALC880_FIXUP_W810),
+ SND_PCI_QUIRK(0x161f, 0x205d, "Medion Rim 2150", ALC880_FIXUP_MEDION_RIM),
+ SND_PCI_QUIRK(0x1631, 0xe011, "PB 13201056", ALC880_FIXUP_6ST_AUTOMUTE),
+- SND_PCI_QUIRK(0x1734, 0x107c, "FSC F1734", ALC880_FIXUP_F1734),
++ SND_PCI_QUIRK(0x1734, 0x107c, "FSC Amilo M1437", ALC880_FIXUP_FUJITSU),
+ SND_PCI_QUIRK(0x1734, 0x1094, "FSC Amilo M1451G", ALC880_FIXUP_FUJITSU),
+ SND_PCI_QUIRK(0x1734, 0x10ac, "FSC AMILO Xi 1526", ALC880_FIXUP_F1734),
+ SND_PCI_QUIRK(0x1734, 0x10b0, "FSC Amilo Pi1556", ALC880_FIXUP_FUJITSU),
+@@ -5118,8 +5118,11 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x06c7, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+- SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x1028, 0x06db, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
++ SND_PCI_QUIRK(0x1028, 0x06dd, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
++ SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
++ SND_PCI_QUIRK(0x1028, 0x06df, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
++ SND_PCI_QUIRK(0x1028, 0x06e0, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
+@@ -6454,6 +6457,7 @@ static const struct snd_pci_quirk alc662_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x05db, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x05fe, "Dell XPS 15", ALC668_FIXUP_DELL_XPS13),
+ SND_PCI_QUIRK(0x1028, 0x060a, "Dell XPS 13", ALC668_FIXUP_DELL_XPS13),
++ SND_PCI_QUIRK(0x1028, 0x060d, "Dell M3800", ALC668_FIXUP_DELL_XPS13),
+ SND_PCI_QUIRK(0x1028, 0x0625, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x0626, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x0696, "Dell", ALC668_FIXUP_DELL_MIC_NO_PRESENCE),
+diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
+index 8b7e391dd0b8..cd8ed2e393a2 100644
+--- a/sound/usb/mixer.c
++++ b/sound/usb/mixer.c
+@@ -2522,7 +2522,7 @@ static int restore_mixer_value(struct usb_mixer_elem_list *list)
+ for (c = 0; c < MAX_CHANNELS; c++) {
+ if (!(cval->cmask & (1 << c)))
+ continue;
+- if (cval->cached & (1 << c)) {
++ if (cval->cached & (1 << (c + 1))) {
+ err = snd_usb_set_cur_mix_value(cval, c + 1, idx,
+ cval->cache_val[idx]);
+ if (err < 0)
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-09-28 23:57 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-09-28 23:57 UTC (permalink / raw
To: gentoo-commits
commit: c90ba25cf30f0a5d1aadc37493e2d3eb8e44c748
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Sep 28 23:57:34 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Sep 28 23:57:34 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=c90ba25c
dm crypt: constrain crypt device's max_segment_size to PAGE_SIZE. See bug #561558. Thanks to kipplasterjoe for reporting.
0000_README | 4 ++
1600_dm-crypt-limit-max-segment-size.patch | 84 ++++++++++++++++++++++++++++++
2 files changed, 88 insertions(+)
diff --git a/0000_README b/0000_README
index b88684d..4a96d2e 100644
--- a/0000_README
+++ b/0000_README
@@ -83,6 +83,10 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
Desc: Enable link security restrictions by default.
+Patch: 1600_dm-crypt-limit-max-segment-size.patch
+From: https://bugzilla.kernel.org/show_bug.cgi?id=104421
+Desc: dm crypt: constrain crypt device's max_segment_size to PAGE_SIZE.
+
Patch: 2700_ThinkPad-30-brightness-control-fix.patch
From: Seth Forshee <seth.forshee@canonical.com>
Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
diff --git a/1600_dm-crypt-limit-max-segment-size.patch b/1600_dm-crypt-limit-max-segment-size.patch
new file mode 100644
index 0000000..82aca44
--- /dev/null
+++ b/1600_dm-crypt-limit-max-segment-size.patch
@@ -0,0 +1,84 @@
+From 586b286b110e94eb31840ac5afc0c24e0881fe34 Mon Sep 17 00:00:00 2001
+From: Mike Snitzer <snitzer@redhat.com>
+Date: Wed, 9 Sep 2015 21:34:51 -0400
+Subject: dm crypt: constrain crypt device's max_segment_size to PAGE_SIZE
+
+Setting the dm-crypt device's max_segment_size to PAGE_SIZE is an
+unfortunate constraint that is required to avoid the potential for
+exceeding dm-crypt's underlying device's max_segments limits -- due to
+crypt_alloc_buffer() possibly allocating pages for the encryption bio
+that are not as physically contiguous as the original bio.
+
+It is interesting to note that this problem was already fixed back in
+2007 via commit 91e106259 ("dm crypt: use bio_add_page"). But Linux 4.0
+commit cf2f1abfb ("dm crypt: don't allocate pages for a partial
+request") regressed dm-crypt back to _not_ using bio_add_page(). But
+given dm-crypt's cpu parallelization changes all depend on commit
+cf2f1abfb's abandoning of the more complex io fragments processing that
+dm-crypt previously had we cannot easily go back to using
+bio_add_page().
+
+So all said the cleanest way to resolve this issue is to fix dm-crypt to
+properly constrain the original bios entering dm-crypt so the encryption
+bios that dm-crypt generates from the original bios are always
+compatible with the underlying device's max_segments queue limits.
+
+It should be noted that technically Linux 4.3 does _not_ need this fix
+because of the block core's new late bio-splitting capability. But, it
+is reasoned, there is little to be gained by having the block core split
+the encrypted bio that is composed of PAGE_SIZE segments. That said, in
+the future we may revert this change.
+
+Fixes: cf2f1abfb ("dm crypt: don't allocate pages for a partial request")
+Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=104421
+Suggested-by: Jeff Moyer <jmoyer@redhat.com>
+Signed-off-by: Mike Snitzer <snitzer@redhat.com>
+Cc: stable@vger.kernel.org # 4.0+
+
+diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
+index d60c88d..4b3b6f8 100644
+--- a/drivers/md/dm-crypt.c
++++ b/drivers/md/dm-crypt.c
+@@ -968,7 +968,8 @@ static void crypt_free_buffer_pages(struct crypt_config *cc, struct bio *clone);
+
+ /*
+ * Generate a new unfragmented bio with the given size
+- * This should never violate the device limitations
++ * This should never violate the device limitations (but only because
++ * max_segment_size is being constrained to PAGE_SIZE).
+ *
+ * This function may be called concurrently. If we allocate from the mempool
+ * concurrently, there is a possibility of deadlock. For example, if we have
+@@ -2045,9 +2046,20 @@ static int crypt_iterate_devices(struct dm_target *ti,
+ return fn(ti, cc->dev, cc->start, ti->len, data);
+ }
+
++static void crypt_io_hints(struct dm_target *ti, struct queue_limits *limits)
++{
++ /*
++ * Unfortunate constraint that is required to avoid the potential
++ * for exceeding underlying device's max_segments limits -- due to
++ * crypt_alloc_buffer() possibly allocating pages for the encryption
++ * bio that are not as physically contiguous as the original bio.
++ */
++ limits->max_segment_size = PAGE_SIZE;
++}
++
+ static struct target_type crypt_target = {
+ .name = "crypt",
+- .version = {1, 14, 0},
++ .version = {1, 14, 1},
+ .module = THIS_MODULE,
+ .ctr = crypt_ctr,
+ .dtr = crypt_dtr,
+@@ -2058,6 +2070,7 @@ static struct target_type crypt_target = {
+ .resume = crypt_resume,
+ .message = crypt_message,
+ .iterate_devices = crypt_iterate_devices,
++ .io_hints = crypt_io_hints,
+ };
+
+ static int __init dm_crypt_init(void)
+--
+cgit v0.10.2
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-09-21 22:16 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-09-21 22:16 UTC (permalink / raw
To: gentoo-commits
commit: 8fe6c9dc74e88b375ffa56515338a480f17ef3d1
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Sep 21 22:16:05 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Sep 21 22:16:05 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=8fe6c9dc
Linux patch 4.1.8
0000_README | 4 +
1007_linux-4.1.8.patch | 4367 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 4371 insertions(+)
diff --git a/0000_README b/0000_README
index ad474e3..b88684d 100644
--- a/0000_README
+++ b/0000_README
@@ -71,6 +71,10 @@ Patch: 1006_linux-4.1.7.patch
From: http://www.kernel.org
Desc: Linux 4.1.7
+Patch: 1007_linux-4.1.8.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.8
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1007_linux-4.1.8.patch b/1007_linux-4.1.8.patch
new file mode 100644
index 0000000..a41c476
--- /dev/null
+++ b/1007_linux-4.1.8.patch
@@ -0,0 +1,4367 @@
+diff --git a/Documentation/ABI/testing/configfs-usb-gadget-loopback b/Documentation/ABI/testing/configfs-usb-gadget-loopback
+index 9aae5bfb9908..06beefbcf061 100644
+--- a/Documentation/ABI/testing/configfs-usb-gadget-loopback
++++ b/Documentation/ABI/testing/configfs-usb-gadget-loopback
+@@ -5,4 +5,4 @@ Description:
+ The attributes:
+
+ qlen - depth of loopback queue
+- bulk_buflen - buffer length
++ buflen - buffer length
+diff --git a/Documentation/ABI/testing/configfs-usb-gadget-sourcesink b/Documentation/ABI/testing/configfs-usb-gadget-sourcesink
+index 29477c319f61..bc7ff731aa0c 100644
+--- a/Documentation/ABI/testing/configfs-usb-gadget-sourcesink
++++ b/Documentation/ABI/testing/configfs-usb-gadget-sourcesink
+@@ -9,4 +9,4 @@ Description:
+ isoc_maxpacket - 0 - 1023 (fs), 0 - 1024 (hs/ss)
+ isoc_mult - 0..2 (hs/ss only)
+ isoc_maxburst - 0..15 (ss only)
+- qlen - buffer length
++ buflen - buffer length
+diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt
+index f45b2bf4b41d..820664af8f6a 100644
+--- a/Documentation/usb/gadget-testing.txt
++++ b/Documentation/usb/gadget-testing.txt
+@@ -237,9 +237,7 @@ Testing the LOOPBACK function
+ -----------------------------
+
+ device: run the gadget
+-host: test-usb
+-
+-http://www.linux-usb.org/usbtest/testusb.c
++host: test-usb (tools/usb/testusb.c)
+
+ 8. MASS STORAGE function
+ ========================
+@@ -588,9 +586,8 @@ Testing the SOURCESINK function
+ -------------------------------
+
+ device: run the gadget
+-host: test-usb
++host: test-usb (tools/usb/testusb.c)
+
+-http://www.linux-usb.org/usbtest/testusb.c
+
+ 16. UAC1 function
+ =================
+diff --git a/Makefile b/Makefile
+index b8591e5f79b8..dbf3baa5fabb 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 7
++SUBLEVEL = 8
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
+index 45df48ba0b12..19f4cc634b0e 100644
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -538,6 +538,7 @@ config ARCH_ORION5X
+ select MVEBU_MBUS
+ select PCI
+ select PLAT_ORION_LEGACY
++ select MULTI_IRQ_HANDLER
+ help
+ Support for the following Marvell Orion 5x series SoCs:
+ Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
+diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
+index 0b9906880c0c..75aba40c69e1 100644
+--- a/arch/arm/boot/dts/exynos3250-rinato.dts
++++ b/arch/arm/boot/dts/exynos3250-rinato.dts
+@@ -181,7 +181,7 @@
+
+ display-timings {
+ timing-0 {
+- clock-frequency = <0>;
++ clock-frequency = <4600000>;
+ hactive = <320>;
+ vactive = <320>;
+ hfront-porch = <1>;
+diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
+index 165968d51d8f..8eca5878a877 100644
+--- a/arch/arm/boot/dts/rk3288.dtsi
++++ b/arch/arm/boot/dts/rk3288.dtsi
+@@ -584,7 +584,7 @@
+ compatible = "rockchip,rk3288-wdt", "snps,dw-wdt";
+ reg = <0xff800000 0x100>;
+ clocks = <&cru PCLK_WDT>;
+- interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>;
++ interrupts = <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
+ };
+
+diff --git a/arch/arm/mach-omap2/clockdomains7xx_data.c b/arch/arm/mach-omap2/clockdomains7xx_data.c
+index 57d5df0c1fbd..7581e036bda6 100644
+--- a/arch/arm/mach-omap2/clockdomains7xx_data.c
++++ b/arch/arm/mach-omap2/clockdomains7xx_data.c
+@@ -331,7 +331,7 @@ static struct clockdomain l4per2_7xx_clkdm = {
+ .dep_bit = DRA7XX_L4PER2_STATDEP_SHIFT,
+ .wkdep_srcs = l4per2_wkup_sleep_deps,
+ .sleepdep_srcs = l4per2_wkup_sleep_deps,
+- .flags = CLKDM_CAN_HWSUP_SWSUP,
++ .flags = CLKDM_CAN_SWSUP,
+ };
+
+ static struct clockdomain mpu0_7xx_clkdm = {
+diff --git a/arch/arm/mach-orion5x/include/mach/irqs.h b/arch/arm/mach-orion5x/include/mach/irqs.h
+index a6fa9d8f12d8..2431d9923427 100644
+--- a/arch/arm/mach-orion5x/include/mach/irqs.h
++++ b/arch/arm/mach-orion5x/include/mach/irqs.h
+@@ -16,42 +16,42 @@
+ /*
+ * Orion Main Interrupt Controller
+ */
+-#define IRQ_ORION5X_BRIDGE 0
+-#define IRQ_ORION5X_DOORBELL_H2C 1
+-#define IRQ_ORION5X_DOORBELL_C2H 2
+-#define IRQ_ORION5X_UART0 3
+-#define IRQ_ORION5X_UART1 4
+-#define IRQ_ORION5X_I2C 5
+-#define IRQ_ORION5X_GPIO_0_7 6
+-#define IRQ_ORION5X_GPIO_8_15 7
+-#define IRQ_ORION5X_GPIO_16_23 8
+-#define IRQ_ORION5X_GPIO_24_31 9
+-#define IRQ_ORION5X_PCIE0_ERR 10
+-#define IRQ_ORION5X_PCIE0_INT 11
+-#define IRQ_ORION5X_USB1_CTRL 12
+-#define IRQ_ORION5X_DEV_BUS_ERR 14
+-#define IRQ_ORION5X_PCI_ERR 15
+-#define IRQ_ORION5X_USB_BR_ERR 16
+-#define IRQ_ORION5X_USB0_CTRL 17
+-#define IRQ_ORION5X_ETH_RX 18
+-#define IRQ_ORION5X_ETH_TX 19
+-#define IRQ_ORION5X_ETH_MISC 20
+-#define IRQ_ORION5X_ETH_SUM 21
+-#define IRQ_ORION5X_ETH_ERR 22
+-#define IRQ_ORION5X_IDMA_ERR 23
+-#define IRQ_ORION5X_IDMA_0 24
+-#define IRQ_ORION5X_IDMA_1 25
+-#define IRQ_ORION5X_IDMA_2 26
+-#define IRQ_ORION5X_IDMA_3 27
+-#define IRQ_ORION5X_CESA 28
+-#define IRQ_ORION5X_SATA 29
+-#define IRQ_ORION5X_XOR0 30
+-#define IRQ_ORION5X_XOR1 31
++#define IRQ_ORION5X_BRIDGE (1 + 0)
++#define IRQ_ORION5X_DOORBELL_H2C (1 + 1)
++#define IRQ_ORION5X_DOORBELL_C2H (1 + 2)
++#define IRQ_ORION5X_UART0 (1 + 3)
++#define IRQ_ORION5X_UART1 (1 + 4)
++#define IRQ_ORION5X_I2C (1 + 5)
++#define IRQ_ORION5X_GPIO_0_7 (1 + 6)
++#define IRQ_ORION5X_GPIO_8_15 (1 + 7)
++#define IRQ_ORION5X_GPIO_16_23 (1 + 8)
++#define IRQ_ORION5X_GPIO_24_31 (1 + 9)
++#define IRQ_ORION5X_PCIE0_ERR (1 + 10)
++#define IRQ_ORION5X_PCIE0_INT (1 + 11)
++#define IRQ_ORION5X_USB1_CTRL (1 + 12)
++#define IRQ_ORION5X_DEV_BUS_ERR (1 + 14)
++#define IRQ_ORION5X_PCI_ERR (1 + 15)
++#define IRQ_ORION5X_USB_BR_ERR (1 + 16)
++#define IRQ_ORION5X_USB0_CTRL (1 + 17)
++#define IRQ_ORION5X_ETH_RX (1 + 18)
++#define IRQ_ORION5X_ETH_TX (1 + 19)
++#define IRQ_ORION5X_ETH_MISC (1 + 20)
++#define IRQ_ORION5X_ETH_SUM (1 + 21)
++#define IRQ_ORION5X_ETH_ERR (1 + 22)
++#define IRQ_ORION5X_IDMA_ERR (1 + 23)
++#define IRQ_ORION5X_IDMA_0 (1 + 24)
++#define IRQ_ORION5X_IDMA_1 (1 + 25)
++#define IRQ_ORION5X_IDMA_2 (1 + 26)
++#define IRQ_ORION5X_IDMA_3 (1 + 27)
++#define IRQ_ORION5X_CESA (1 + 28)
++#define IRQ_ORION5X_SATA (1 + 29)
++#define IRQ_ORION5X_XOR0 (1 + 30)
++#define IRQ_ORION5X_XOR1 (1 + 31)
+
+ /*
+ * Orion General Purpose Pins
+ */
+-#define IRQ_ORION5X_GPIO_START 32
++#define IRQ_ORION5X_GPIO_START 33
+ #define NR_GPIO_IRQS 32
+
+ #define NR_IRQS (IRQ_ORION5X_GPIO_START + NR_GPIO_IRQS)
+diff --git a/arch/arm/mach-orion5x/irq.c b/arch/arm/mach-orion5x/irq.c
+index cd4bac4d7e43..086ecb87d885 100644
+--- a/arch/arm/mach-orion5x/irq.c
++++ b/arch/arm/mach-orion5x/irq.c
+@@ -42,7 +42,7 @@ __exception_irq_entry orion5x_legacy_handle_irq(struct pt_regs *regs)
+ stat = readl_relaxed(MAIN_IRQ_CAUSE);
+ stat &= readl_relaxed(MAIN_IRQ_MASK);
+ if (stat) {
+- unsigned int hwirq = __fls(stat);
++ unsigned int hwirq = 1 + __fls(stat);
+ handle_IRQ(hwirq, regs);
+ return;
+ }
+@@ -51,7 +51,7 @@ __exception_irq_entry orion5x_legacy_handle_irq(struct pt_regs *regs)
+
+ void __init orion5x_init_irq(void)
+ {
+- orion_irq_init(0, MAIN_IRQ_MASK);
++ orion_irq_init(1, MAIN_IRQ_MASK);
+
+ #ifdef CONFIG_MULTI_IRQ_HANDLER
+ set_handle_irq(orion5x_legacy_handle_irq);
+diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c
+index 2e6ab67e2284..611a5f96d3ca 100644
+--- a/arch/arm/mach-rockchip/platsmp.c
++++ b/arch/arm/mach-rockchip/platsmp.c
+@@ -72,29 +72,22 @@ static struct reset_control *rockchip_get_core_reset(int cpu)
+ static int pmu_set_power_domain(int pd, bool on)
+ {
+ u32 val = (on) ? 0 : BIT(pd);
++ struct reset_control *rstc = rockchip_get_core_reset(pd);
+ int ret;
+
++ if (IS_ERR(rstc) && read_cpuid_part() != ARM_CPU_PART_CORTEX_A9) {
++ pr_err("%s: could not get reset control for core %d\n",
++ __func__, pd);
++ return PTR_ERR(rstc);
++ }
++
+ /*
+ * We need to soft reset the cpu when we turn off the cpu power domain,
+ * or else the active processors might be stalled when the individual
+ * processor is powered down.
+ */
+- if (read_cpuid_part() != ARM_CPU_PART_CORTEX_A9) {
+- struct reset_control *rstc = rockchip_get_core_reset(pd);
+-
+- if (IS_ERR(rstc)) {
+- pr_err("%s: could not get reset control for core %d\n",
+- __func__, pd);
+- return PTR_ERR(rstc);
+- }
+-
+- if (on)
+- reset_control_deassert(rstc);
+- else
+- reset_control_assert(rstc);
+-
+- reset_control_put(rstc);
+- }
++ if (!IS_ERR(rstc) && !on)
++ reset_control_assert(rstc);
+
+ ret = regmap_update_bits(pmu, PMU_PWRDN_CON, BIT(pd), val);
+ if (ret < 0) {
+@@ -112,6 +105,12 @@ static int pmu_set_power_domain(int pd, bool on)
+ }
+ }
+
++ if (!IS_ERR(rstc)) {
++ if (on)
++ reset_control_deassert(rstc);
++ reset_control_put(rstc);
++ }
++
+ return 0;
+ }
+
+@@ -147,8 +146,12 @@ static int __cpuinit rockchip_boot_secondary(unsigned int cpu,
+ * the mailbox:
+ * sram_base_addr + 4: 0xdeadbeaf
+ * sram_base_addr + 8: start address for pc
++ * The cpu0 need to wait the other cpus other than cpu0 entering
++ * the wfe state.The wait time is affected by many aspects.
++ * (e.g: cpu frequency, bootrom frequency, sram frequency, ...)
+ * */
+- udelay(10);
++ mdelay(1); /* ensure the cpus other than cpu0 to startup */
++
+ writel(virt_to_phys(secondary_startup), sram_base_addr + 8);
+ writel(0xDEADBEAF, sram_base_addr + 4);
+ dsb_sev();
+diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+index b027a89737b6..c6d601cc9764 100644
+--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
++++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+@@ -421,14 +421,20 @@ long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
+ rev = real_vmalloc_addr(&kvm->arch.revmap[pte_index]);
+ v = pte & ~HPTE_V_HVLOCK;
+ if (v & HPTE_V_VALID) {
+- u64 pte1;
+-
+- pte1 = be64_to_cpu(hpte[1]);
+ hpte[0] &= ~cpu_to_be64(HPTE_V_VALID);
+- rb = compute_tlbie_rb(v, pte1, pte_index);
++ rb = compute_tlbie_rb(v, be64_to_cpu(hpte[1]), pte_index);
+ do_tlbies(kvm, &rb, 1, global_invalidates(kvm, flags), true);
+- /* Read PTE low word after tlbie to get final R/C values */
+- remove_revmap_chain(kvm, pte_index, rev, v, pte1);
++ /*
++ * The reference (R) and change (C) bits in a HPT
++ * entry can be set by hardware at any time up until
++ * the HPTE is invalidated and the TLB invalidation
++ * sequence has completed. This means that when
++ * removing a HPTE, we need to re-read the HPTE after
++ * the invalidation sequence has completed in order to
++ * obtain reliable values of R and C.
++ */
++ remove_revmap_chain(kvm, pte_index, rev, v,
++ be64_to_cpu(hpte[1]));
+ }
+ r = rev->guest_rpte & ~HPTE_GR_RESERVED;
+ note_hpte_modification(kvm, rev);
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index 4d70df26c402..3b2d2c5b6376 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -1127,6 +1127,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
+ cmpwi r12, BOOK3S_INTERRUPT_H_DOORBELL
+ bne 3f
+ lbz r0, HSTATE_HOST_IPI(r13)
++ cmpwi r0, 0
+ beq 4f
+ b guest_exit_cont
+ 3:
+diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
+index 7262fe438c99..1942f22e6694 100644
+--- a/arch/s390/kernel/setup.c
++++ b/arch/s390/kernel/setup.c
+@@ -683,7 +683,7 @@ static void __init setup_memory(void)
+ /*
+ * Setup hardware capabilities.
+ */
+-static void __init setup_hwcaps(void)
++static int __init setup_hwcaps(void)
+ {
+ static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 };
+ struct cpuid cpu_id;
+@@ -749,9 +749,11 @@ static void __init setup_hwcaps(void)
+ elf_hwcap |= HWCAP_S390_TE;
+
+ /*
+- * Vector extension HWCAP_S390_VXRS is bit 11.
++ * Vector extension HWCAP_S390_VXRS is bit 11. The Vector extension
++ * can be disabled with the "novx" parameter. Use MACHINE_HAS_VX
++ * instead of facility bit 129.
+ */
+- if (test_facility(129))
++ if (MACHINE_HAS_VX)
+ elf_hwcap |= HWCAP_S390_VXRS;
+ get_cpu_id(&cpu_id);
+ add_device_randomness(&cpu_id, sizeof(cpu_id));
+@@ -788,7 +790,9 @@ static void __init setup_hwcaps(void)
+ strcpy(elf_platform, "z13");
+ break;
+ }
++ return 0;
+ }
++arch_initcall(setup_hwcaps);
+
+ /*
+ * Add system information as device randomness
+@@ -871,11 +875,6 @@ void __init setup_arch(char **cmdline_p)
+ cpu_init();
+
+ /*
+- * Setup capabilities (ELF_HWCAP & ELF_PLATFORM).
+- */
+- setup_hwcaps();
+-
+- /*
+ * Create kernel page tables and switch to virtual addressing.
+ */
+ paging_init();
+diff --git a/arch/x86/crypto/ghash-clmulni-intel_glue.c b/arch/x86/crypto/ghash-clmulni-intel_glue.c
+index 2079baf06bdd..daf8d2b9a217 100644
+--- a/arch/x86/crypto/ghash-clmulni-intel_glue.c
++++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c
+@@ -294,6 +294,7 @@ static struct ahash_alg ghash_async_alg = {
+ .cra_name = "ghash",
+ .cra_driver_name = "ghash-clmulni",
+ .cra_priority = 400,
++ .cra_ctxsize = sizeof(struct ghash_async_ctx),
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC,
+ .cra_blocksize = GHASH_BLOCK_SIZE,
+ .cra_type = &crypto_ahash_type,
+diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h
+index a0bf89fd2647..4e10d73cf018 100644
+--- a/arch/x86/include/asm/desc.h
++++ b/arch/x86/include/asm/desc.h
+@@ -280,21 +280,6 @@ static inline void clear_LDT(void)
+ set_ldt(NULL, 0);
+ }
+
+-/*
+- * load one particular LDT into the current CPU
+- */
+-static inline void load_LDT_nolock(mm_context_t *pc)
+-{
+- set_ldt(pc->ldt, pc->size);
+-}
+-
+-static inline void load_LDT(mm_context_t *pc)
+-{
+- preempt_disable();
+- load_LDT_nolock(pc);
+- preempt_enable();
+-}
+-
+ static inline unsigned long get_desc_base(const struct desc_struct *desc)
+ {
+ return (unsigned)(desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24));
+diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h
+index 09b9620a73b4..364d27481a52 100644
+--- a/arch/x86/include/asm/mmu.h
++++ b/arch/x86/include/asm/mmu.h
+@@ -9,8 +9,7 @@
+ * we put the segment information here.
+ */
+ typedef struct {
+- void *ldt;
+- int size;
++ struct ldt_struct *ldt;
+
+ #ifdef CONFIG_X86_64
+ /* True if mm supports a task running in 32 bit compatibility mode. */
+diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
+index e997f70f80c4..80d67dd80351 100644
+--- a/arch/x86/include/asm/mmu_context.h
++++ b/arch/x86/include/asm/mmu_context.h
+@@ -34,6 +34,50 @@ static inline void load_mm_cr4(struct mm_struct *mm) {}
+ #endif
+
+ /*
++ * ldt_structs can be allocated, used, and freed, but they are never
++ * modified while live.
++ */
++struct ldt_struct {
++ /*
++ * Xen requires page-aligned LDTs with special permissions. This is
++ * needed to prevent us from installing evil descriptors such as
++ * call gates. On native, we could merge the ldt_struct and LDT
++ * allocations, but it's not worth trying to optimize.
++ */
++ struct desc_struct *entries;
++ int size;
++};
++
++static inline void load_mm_ldt(struct mm_struct *mm)
++{
++ struct ldt_struct *ldt;
++
++ /* lockless_dereference synchronizes with smp_store_release */
++ ldt = lockless_dereference(mm->context.ldt);
++
++ /*
++ * Any change to mm->context.ldt is followed by an IPI to all
++ * CPUs with the mm active. The LDT will not be freed until
++ * after the IPI is handled by all such CPUs. This means that,
++ * if the ldt_struct changes before we return, the values we see
++ * will be safe, and the new values will be loaded before we run
++ * any user code.
++ *
++ * NB: don't try to convert this to use RCU without extreme care.
++ * We would still need IRQs off, because we don't want to change
++ * the local LDT after an IPI loaded a newer value than the one
++ * that we can see.
++ */
++
++ if (unlikely(ldt))
++ set_ldt(ldt->entries, ldt->size);
++ else
++ clear_LDT();
++
++ DEBUG_LOCKS_WARN_ON(preemptible());
++}
++
++/*
+ * Used for LDT copy/destruction.
+ */
+ int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
+@@ -78,12 +122,12 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ * was called and then modify_ldt changed
+ * prev->context.ldt but suppressed an IPI to this CPU.
+ * In this case, prev->context.ldt != NULL, because we
+- * never free an LDT while the mm still exists. That
+- * means that next->context.ldt != prev->context.ldt,
+- * because mms never share an LDT.
++ * never set context.ldt to NULL while the mm still
++ * exists. That means that next->context.ldt !=
++ * prev->context.ldt, because mms never share an LDT.
+ */
+ if (unlikely(prev->context.ldt != next->context.ldt))
+- load_LDT_nolock(&next->context);
++ load_mm_ldt(next);
+ }
+ #ifdef CONFIG_SMP
+ else {
+@@ -106,7 +150,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ load_cr3(next->pgd);
+ trace_tlb_flush(TLB_FLUSH_ON_TASK_SWITCH, TLB_FLUSH_ALL);
+ load_mm_cr4(next);
+- load_LDT_nolock(&next->context);
++ load_mm_ldt(next);
+ }
+ }
+ #endif
+diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
+index dbe76a14c3c9..07bea80223f6 100644
+--- a/arch/x86/kernel/acpi/boot.c
++++ b/arch/x86/kernel/acpi/boot.c
+@@ -489,6 +489,7 @@ static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger,
+ polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
+
+ mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
++ acpi_penalize_sci_irq(bus_irq, trigger, polarity);
+
+ /*
+ * stash over-ride to indicate we've been here
+diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
+index a62cf04dac8a..205e0f3df501 100644
+--- a/arch/x86/kernel/cpu/common.c
++++ b/arch/x86/kernel/cpu/common.c
+@@ -1434,7 +1434,7 @@ void cpu_init(void)
+ load_sp0(t, ¤t->thread);
+ set_tss_desc(cpu, t);
+ load_TR_desc();
+- load_LDT(&init_mm.context);
++ load_mm_ldt(&init_mm);
+
+ clear_all_debug_regs();
+ dbg_restore_debug_regs();
+@@ -1483,7 +1483,7 @@ void cpu_init(void)
+ load_sp0(t, thread);
+ set_tss_desc(cpu, t);
+ load_TR_desc();
+- load_LDT(&init_mm.context);
++ load_mm_ldt(&init_mm);
+
+ t->x86_tss.io_bitmap_base = offsetof(struct tss_struct, io_bitmap);
+
+diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel.c b/arch/x86/kernel/cpu/mcheck/mce_intel.c
+index b4a41cf030ed..e166d833cf63 100644
+--- a/arch/x86/kernel/cpu/mcheck/mce_intel.c
++++ b/arch/x86/kernel/cpu/mcheck/mce_intel.c
+@@ -116,6 +116,27 @@ void mce_intel_hcpu_update(unsigned long cpu)
+ per_cpu(cmci_storm_state, cpu) = CMCI_STORM_NONE;
+ }
+
++static void cmci_toggle_interrupt_mode(bool on)
++{
++ unsigned long flags, *owned;
++ int bank;
++ u64 val;
++
++ raw_spin_lock_irqsave(&cmci_discover_lock, flags);
++ owned = this_cpu_ptr(mce_banks_owned);
++ for_each_set_bit(bank, owned, MAX_NR_BANKS) {
++ rdmsrl(MSR_IA32_MCx_CTL2(bank), val);
++
++ if (on)
++ val |= MCI_CTL2_CMCI_EN;
++ else
++ val &= ~MCI_CTL2_CMCI_EN;
++
++ wrmsrl(MSR_IA32_MCx_CTL2(bank), val);
++ }
++ raw_spin_unlock_irqrestore(&cmci_discover_lock, flags);
++}
++
+ unsigned long cmci_intel_adjust_timer(unsigned long interval)
+ {
+ if ((this_cpu_read(cmci_backoff_cnt) > 0) &&
+@@ -145,7 +166,7 @@ unsigned long cmci_intel_adjust_timer(unsigned long interval)
+ */
+ if (!atomic_read(&cmci_storm_on_cpus)) {
+ __this_cpu_write(cmci_storm_state, CMCI_STORM_NONE);
+- cmci_reenable();
++ cmci_toggle_interrupt_mode(true);
+ cmci_recheck();
+ }
+ return CMCI_POLL_INTERVAL;
+@@ -156,22 +177,6 @@ unsigned long cmci_intel_adjust_timer(unsigned long interval)
+ }
+ }
+
+-static void cmci_storm_disable_banks(void)
+-{
+- unsigned long flags, *owned;
+- int bank;
+- u64 val;
+-
+- raw_spin_lock_irqsave(&cmci_discover_lock, flags);
+- owned = this_cpu_ptr(mce_banks_owned);
+- for_each_set_bit(bank, owned, MAX_NR_BANKS) {
+- rdmsrl(MSR_IA32_MCx_CTL2(bank), val);
+- val &= ~MCI_CTL2_CMCI_EN;
+- wrmsrl(MSR_IA32_MCx_CTL2(bank), val);
+- }
+- raw_spin_unlock_irqrestore(&cmci_discover_lock, flags);
+-}
+-
+ static bool cmci_storm_detect(void)
+ {
+ unsigned int cnt = __this_cpu_read(cmci_storm_cnt);
+@@ -193,7 +198,7 @@ static bool cmci_storm_detect(void)
+ if (cnt <= CMCI_STORM_THRESHOLD)
+ return false;
+
+- cmci_storm_disable_banks();
++ cmci_toggle_interrupt_mode(false);
+ __this_cpu_write(cmci_storm_state, CMCI_STORM_ACTIVE);
+ r = atomic_add_return(1, &cmci_storm_on_cpus);
+ mce_timer_kick(CMCI_STORM_INTERVAL);
+diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
+index aa4e3a74e541..4cc98a4e8ea9 100644
+--- a/arch/x86/kernel/cpu/perf_event.c
++++ b/arch/x86/kernel/cpu/perf_event.c
+@@ -2170,21 +2170,25 @@ static unsigned long get_segment_base(unsigned int segment)
+ int idx = segment >> 3;
+
+ if ((segment & SEGMENT_TI_MASK) == SEGMENT_LDT) {
++ struct ldt_struct *ldt;
++
+ if (idx > LDT_ENTRIES)
+ return 0;
+
+- if (idx > current->active_mm->context.size)
++ /* IRQs are off, so this synchronizes with smp_store_release */
++ ldt = lockless_dereference(current->active_mm->context.ldt);
++ if (!ldt || idx > ldt->size)
+ return 0;
+
+- desc = current->active_mm->context.ldt;
++ desc = &ldt->entries[idx];
+ } else {
+ if (idx > GDT_ENTRIES)
+ return 0;
+
+- desc = raw_cpu_ptr(gdt_page.gdt);
++ desc = raw_cpu_ptr(gdt_page.gdt) + idx;
+ }
+
+- return get_desc_base(desc + idx);
++ return get_desc_base(desc);
+ }
+
+ #ifdef CONFIG_COMPAT
+diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
+index c37886d759cc..2bcc0525f1c1 100644
+--- a/arch/x86/kernel/ldt.c
++++ b/arch/x86/kernel/ldt.c
+@@ -12,6 +12,7 @@
+ #include <linux/string.h>
+ #include <linux/mm.h>
+ #include <linux/smp.h>
++#include <linux/slab.h>
+ #include <linux/vmalloc.h>
+ #include <linux/uaccess.h>
+
+@@ -20,82 +21,82 @@
+ #include <asm/mmu_context.h>
+ #include <asm/syscalls.h>
+
+-#ifdef CONFIG_SMP
++/* context.lock is held for us, so we don't need any locking. */
+ static void flush_ldt(void *current_mm)
+ {
+- if (current->active_mm == current_mm)
+- load_LDT(¤t->active_mm->context);
++ mm_context_t *pc;
++
++ if (current->active_mm != current_mm)
++ return;
++
++ pc = ¤t->active_mm->context;
++ set_ldt(pc->ldt->entries, pc->ldt->size);
+ }
+-#endif
+
+-static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
++/* The caller must call finalize_ldt_struct on the result. LDT starts zeroed. */
++static struct ldt_struct *alloc_ldt_struct(int size)
+ {
+- void *oldldt, *newldt;
+- int oldsize;
+-
+- if (mincount <= pc->size)
+- return 0;
+- oldsize = pc->size;
+- mincount = (mincount + (PAGE_SIZE / LDT_ENTRY_SIZE - 1)) &
+- (~(PAGE_SIZE / LDT_ENTRY_SIZE - 1));
+- if (mincount * LDT_ENTRY_SIZE > PAGE_SIZE)
+- newldt = vmalloc(mincount * LDT_ENTRY_SIZE);
++ struct ldt_struct *new_ldt;
++ int alloc_size;
++
++ if (size > LDT_ENTRIES)
++ return NULL;
++
++ new_ldt = kmalloc(sizeof(struct ldt_struct), GFP_KERNEL);
++ if (!new_ldt)
++ return NULL;
++
++ BUILD_BUG_ON(LDT_ENTRY_SIZE != sizeof(struct desc_struct));
++ alloc_size = size * LDT_ENTRY_SIZE;
++
++ /*
++ * Xen is very picky: it requires a page-aligned LDT that has no
++ * trailing nonzero bytes in any page that contains LDT descriptors.
++ * Keep it simple: zero the whole allocation and never allocate less
++ * than PAGE_SIZE.
++ */
++ if (alloc_size > PAGE_SIZE)
++ new_ldt->entries = vzalloc(alloc_size);
+ else
+- newldt = (void *)__get_free_page(GFP_KERNEL);
+-
+- if (!newldt)
+- return -ENOMEM;
++ new_ldt->entries = kzalloc(PAGE_SIZE, GFP_KERNEL);
+
+- if (oldsize)
+- memcpy(newldt, pc->ldt, oldsize * LDT_ENTRY_SIZE);
+- oldldt = pc->ldt;
+- memset(newldt + oldsize * LDT_ENTRY_SIZE, 0,
+- (mincount - oldsize) * LDT_ENTRY_SIZE);
++ if (!new_ldt->entries) {
++ kfree(new_ldt);
++ return NULL;
++ }
+
+- paravirt_alloc_ldt(newldt, mincount);
++ new_ldt->size = size;
++ return new_ldt;
++}
+
+-#ifdef CONFIG_X86_64
+- /* CHECKME: Do we really need this ? */
+- wmb();
+-#endif
+- pc->ldt = newldt;
+- wmb();
+- pc->size = mincount;
+- wmb();
+-
+- if (reload) {
+-#ifdef CONFIG_SMP
+- preempt_disable();
+- load_LDT(pc);
+- if (!cpumask_equal(mm_cpumask(current->mm),
+- cpumask_of(smp_processor_id())))
+- smp_call_function(flush_ldt, current->mm, 1);
+- preempt_enable();
+-#else
+- load_LDT(pc);
+-#endif
+- }
+- if (oldsize) {
+- paravirt_free_ldt(oldldt, oldsize);
+- if (oldsize * LDT_ENTRY_SIZE > PAGE_SIZE)
+- vfree(oldldt);
+- else
+- put_page(virt_to_page(oldldt));
+- }
+- return 0;
++/* After calling this, the LDT is immutable. */
++static void finalize_ldt_struct(struct ldt_struct *ldt)
++{
++ paravirt_alloc_ldt(ldt->entries, ldt->size);
+ }
+
+-static inline int copy_ldt(mm_context_t *new, mm_context_t *old)
++/* context.lock is held */
++static void install_ldt(struct mm_struct *current_mm,
++ struct ldt_struct *ldt)
+ {
+- int err = alloc_ldt(new, old->size, 0);
+- int i;
++ /* Synchronizes with lockless_dereference in load_mm_ldt. */
++ smp_store_release(¤t_mm->context.ldt, ldt);
++
++ /* Activate the LDT for all CPUs using current_mm. */
++ on_each_cpu_mask(mm_cpumask(current_mm), flush_ldt, current_mm, true);
++}
+
+- if (err < 0)
+- return err;
++static void free_ldt_struct(struct ldt_struct *ldt)
++{
++ if (likely(!ldt))
++ return;
+
+- for (i = 0; i < old->size; i++)
+- write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE);
+- return 0;
++ paravirt_free_ldt(ldt->entries, ldt->size);
++ if (ldt->size * LDT_ENTRY_SIZE > PAGE_SIZE)
++ vfree(ldt->entries);
++ else
++ kfree(ldt->entries);
++ kfree(ldt);
+ }
+
+ /*
+@@ -104,17 +105,37 @@ static inline int copy_ldt(mm_context_t *new, mm_context_t *old)
+ */
+ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+ {
++ struct ldt_struct *new_ldt;
+ struct mm_struct *old_mm;
+ int retval = 0;
+
+ mutex_init(&mm->context.lock);
+- mm->context.size = 0;
+ old_mm = current->mm;
+- if (old_mm && old_mm->context.size > 0) {
+- mutex_lock(&old_mm->context.lock);
+- retval = copy_ldt(&mm->context, &old_mm->context);
+- mutex_unlock(&old_mm->context.lock);
++ if (!old_mm) {
++ mm->context.ldt = NULL;
++ return 0;
+ }
++
++ mutex_lock(&old_mm->context.lock);
++ if (!old_mm->context.ldt) {
++ mm->context.ldt = NULL;
++ goto out_unlock;
++ }
++
++ new_ldt = alloc_ldt_struct(old_mm->context.ldt->size);
++ if (!new_ldt) {
++ retval = -ENOMEM;
++ goto out_unlock;
++ }
++
++ memcpy(new_ldt->entries, old_mm->context.ldt->entries,
++ new_ldt->size * LDT_ENTRY_SIZE);
++ finalize_ldt_struct(new_ldt);
++
++ mm->context.ldt = new_ldt;
++
++out_unlock:
++ mutex_unlock(&old_mm->context.lock);
+ return retval;
+ }
+
+@@ -125,53 +146,47 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+ */
+ void destroy_context(struct mm_struct *mm)
+ {
+- if (mm->context.size) {
+-#ifdef CONFIG_X86_32
+- /* CHECKME: Can this ever happen ? */
+- if (mm == current->active_mm)
+- clear_LDT();
+-#endif
+- paravirt_free_ldt(mm->context.ldt, mm->context.size);
+- if (mm->context.size * LDT_ENTRY_SIZE > PAGE_SIZE)
+- vfree(mm->context.ldt);
+- else
+- put_page(virt_to_page(mm->context.ldt));
+- mm->context.size = 0;
+- }
++ free_ldt_struct(mm->context.ldt);
++ mm->context.ldt = NULL;
+ }
+
+ static int read_ldt(void __user *ptr, unsigned long bytecount)
+ {
+- int err;
++ int retval;
+ unsigned long size;
+ struct mm_struct *mm = current->mm;
+
+- if (!mm->context.size)
+- return 0;
++ mutex_lock(&mm->context.lock);
++
++ if (!mm->context.ldt) {
++ retval = 0;
++ goto out_unlock;
++ }
++
+ if (bytecount > LDT_ENTRY_SIZE * LDT_ENTRIES)
+ bytecount = LDT_ENTRY_SIZE * LDT_ENTRIES;
+
+- mutex_lock(&mm->context.lock);
+- size = mm->context.size * LDT_ENTRY_SIZE;
++ size = mm->context.ldt->size * LDT_ENTRY_SIZE;
+ if (size > bytecount)
+ size = bytecount;
+
+- err = 0;
+- if (copy_to_user(ptr, mm->context.ldt, size))
+- err = -EFAULT;
+- mutex_unlock(&mm->context.lock);
+- if (err < 0)
+- goto error_return;
++ if (copy_to_user(ptr, mm->context.ldt->entries, size)) {
++ retval = -EFAULT;
++ goto out_unlock;
++ }
++
+ if (size != bytecount) {
+- /* zero-fill the rest */
+- if (clear_user(ptr + size, bytecount - size) != 0) {
+- err = -EFAULT;
+- goto error_return;
++ /* Zero-fill the rest and pretend we read bytecount bytes. */
++ if (clear_user(ptr + size, bytecount - size)) {
++ retval = -EFAULT;
++ goto out_unlock;
+ }
+ }
+- return bytecount;
+-error_return:
+- return err;
++ retval = bytecount;
++
++out_unlock:
++ mutex_unlock(&mm->context.lock);
++ return retval;
+ }
+
+ static int read_default_ldt(void __user *ptr, unsigned long bytecount)
+@@ -195,6 +210,8 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
+ struct desc_struct ldt;
+ int error;
+ struct user_desc ldt_info;
++ int oldsize, newsize;
++ struct ldt_struct *new_ldt, *old_ldt;
+
+ error = -EINVAL;
+ if (bytecount != sizeof(ldt_info))
+@@ -213,34 +230,39 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
+ goto out;
+ }
+
+- mutex_lock(&mm->context.lock);
+- if (ldt_info.entry_number >= mm->context.size) {
+- error = alloc_ldt(¤t->mm->context,
+- ldt_info.entry_number + 1, 1);
+- if (error < 0)
+- goto out_unlock;
+- }
+-
+- /* Allow LDTs to be cleared by the user. */
+- if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
+- if (oldmode || LDT_empty(&ldt_info)) {
+- memset(&ldt, 0, sizeof(ldt));
+- goto install;
++ if ((oldmode && !ldt_info.base_addr && !ldt_info.limit) ||
++ LDT_empty(&ldt_info)) {
++ /* The user wants to clear the entry. */
++ memset(&ldt, 0, sizeof(ldt));
++ } else {
++ if (!IS_ENABLED(CONFIG_X86_16BIT) && !ldt_info.seg_32bit) {
++ error = -EINVAL;
++ goto out;
+ }
++
++ fill_ldt(&ldt, &ldt_info);
++ if (oldmode)
++ ldt.avl = 0;
+ }
+
+- if (!IS_ENABLED(CONFIG_X86_16BIT) && !ldt_info.seg_32bit) {
+- error = -EINVAL;
++ mutex_lock(&mm->context.lock);
++
++ old_ldt = mm->context.ldt;
++ oldsize = old_ldt ? old_ldt->size : 0;
++ newsize = max((int)(ldt_info.entry_number + 1), oldsize);
++
++ error = -ENOMEM;
++ new_ldt = alloc_ldt_struct(newsize);
++ if (!new_ldt)
+ goto out_unlock;
+- }
+
+- fill_ldt(&ldt, &ldt_info);
+- if (oldmode)
+- ldt.avl = 0;
++ if (old_ldt)
++ memcpy(new_ldt->entries, old_ldt->entries, oldsize * LDT_ENTRY_SIZE);
++ new_ldt->entries[ldt_info.entry_number] = ldt;
++ finalize_ldt_struct(new_ldt);
+
+- /* Install the new entry ... */
+-install:
+- write_ldt_entry(mm->context.ldt, ldt_info.entry_number, &ldt);
++ install_ldt(mm, new_ldt);
++ free_ldt_struct(old_ldt);
+ error = 0;
+
+ out_unlock:
+diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
+index ddfdbf74f174..5e0bf57d9944 100644
+--- a/arch/x86/kernel/process_64.c
++++ b/arch/x86/kernel/process_64.c
+@@ -122,11 +122,11 @@ void __show_regs(struct pt_regs *regs, int all)
+ void release_thread(struct task_struct *dead_task)
+ {
+ if (dead_task->mm) {
+- if (dead_task->mm->context.size) {
++ if (dead_task->mm->context.ldt) {
+ pr_warn("WARNING: dead process %s still has LDT? <%p/%d>\n",
+ dead_task->comm,
+ dead_task->mm->context.ldt,
+- dead_task->mm->context.size);
++ dead_task->mm->context.ldt->size);
+ BUG();
+ }
+ }
+diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c
+index 9b4d51d0c0d0..0ccb53a9fcd9 100644
+--- a/arch/x86/kernel/step.c
++++ b/arch/x86/kernel/step.c
+@@ -5,6 +5,7 @@
+ #include <linux/mm.h>
+ #include <linux/ptrace.h>
+ #include <asm/desc.h>
++#include <asm/mmu_context.h>
+
+ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs)
+ {
+@@ -27,13 +28,14 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re
+ struct desc_struct *desc;
+ unsigned long base;
+
+- seg &= ~7UL;
++ seg >>= 3;
+
+ mutex_lock(&child->mm->context.lock);
+- if (unlikely((seg >> 3) >= child->mm->context.size))
++ if (unlikely(!child->mm->context.ldt ||
++ seg >= child->mm->context.ldt->size))
+ addr = -1L; /* bogus selector, access would fault */
+ else {
+- desc = child->mm->context.ldt + seg;
++ desc = &child->mm->context.ldt->entries[seg];
+ base = get_desc_base(desc);
+
+ /* 16-bit code segment? */
+diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
+index b73337634214..554e877e0bc4 100644
+--- a/arch/x86/kvm/mmu.c
++++ b/arch/x86/kvm/mmu.c
+@@ -357,12 +357,6 @@ static u64 __get_spte_lockless(u64 *sptep)
+ {
+ return ACCESS_ONCE(*sptep);
+ }
+-
+-static bool __check_direct_spte_mmio_pf(u64 spte)
+-{
+- /* It is valid if the spte is zapped. */
+- return spte == 0ull;
+-}
+ #else
+ union split_spte {
+ struct {
+@@ -478,23 +472,6 @@ retry:
+
+ return spte.spte;
+ }
+-
+-static bool __check_direct_spte_mmio_pf(u64 spte)
+-{
+- union split_spte sspte = (union split_spte)spte;
+- u32 high_mmio_mask = shadow_mmio_mask >> 32;
+-
+- /* It is valid if the spte is zapped. */
+- if (spte == 0ull)
+- return true;
+-
+- /* It is valid if the spte is being zapped. */
+- if (sspte.spte_low == 0ull &&
+- (sspte.spte_high & high_mmio_mask) == high_mmio_mask)
+- return true;
+-
+- return false;
+-}
+ #endif
+
+ static bool spte_is_locklessly_modifiable(u64 spte)
+@@ -3343,21 +3320,6 @@ static bool quickly_check_mmio_pf(struct kvm_vcpu *vcpu, u64 addr, bool direct)
+ return vcpu_match_mmio_gva(vcpu, addr);
+ }
+
+-
+-/*
+- * On direct hosts, the last spte is only allows two states
+- * for mmio page fault:
+- * - It is the mmio spte
+- * - It is zapped or it is being zapped.
+- *
+- * This function completely checks the spte when the last spte
+- * is not the mmio spte.
+- */
+-static bool check_direct_spte_mmio_pf(u64 spte)
+-{
+- return __check_direct_spte_mmio_pf(spte);
+-}
+-
+ static u64 walk_shadow_page_get_mmio_spte(struct kvm_vcpu *vcpu, u64 addr)
+ {
+ struct kvm_shadow_walk_iterator iterator;
+@@ -3400,13 +3362,6 @@ int handle_mmio_page_fault_common(struct kvm_vcpu *vcpu, u64 addr, bool direct)
+ }
+
+ /*
+- * It's ok if the gva is remapped by other cpus on shadow guest,
+- * it's a BUG if the gfn is not a mmio page.
+- */
+- if (direct && !check_direct_spte_mmio_pf(spte))
+- return RET_MMIO_PF_BUG;
+-
+- /*
+ * If the page table is zapped by other cpus, let CPU fault again on
+ * the address.
+ */
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index ea306adbbc13..47a32f743a91 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -2192,7 +2192,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+ if (guest_cpuid_has_tsc_adjust(vcpu)) {
+ if (!msr_info->host_initiated) {
+ s64 adj = data - vcpu->arch.ia32_tsc_adjust_msr;
+- kvm_x86_ops->adjust_tsc_offset(vcpu, adj, true);
++ adjust_tsc_offset_guest(vcpu, adj);
+ }
+ vcpu->arch.ia32_tsc_adjust_msr = data;
+ }
+diff --git a/arch/x86/math-emu/fpu_entry.c b/arch/x86/math-emu/fpu_entry.c
+index 9b868124128d..274a52b1183e 100644
+--- a/arch/x86/math-emu/fpu_entry.c
++++ b/arch/x86/math-emu/fpu_entry.c
+@@ -29,7 +29,6 @@
+
+ #include <asm/uaccess.h>
+ #include <asm/traps.h>
+-#include <asm/desc.h>
+ #include <asm/user.h>
+ #include <asm/i387.h>
+
+@@ -185,7 +184,7 @@ void math_emulate(struct math_emu_info *info)
+ math_abort(FPU_info, SIGILL);
+ }
+
+- code_descriptor = LDT_DESCRIPTOR(FPU_CS);
++ code_descriptor = FPU_get_ldt_descriptor(FPU_CS);
+ if (SEG_D_SIZE(code_descriptor)) {
+ /* The above test may be wrong, the book is not clear */
+ /* Segmented 32 bit protected mode */
+diff --git a/arch/x86/math-emu/fpu_system.h b/arch/x86/math-emu/fpu_system.h
+index 2c614410a5f3..d342fce49447 100644
+--- a/arch/x86/math-emu/fpu_system.h
++++ b/arch/x86/math-emu/fpu_system.h
+@@ -16,9 +16,24 @@
+ #include <linux/kernel.h>
+ #include <linux/mm.h>
+
+-/* s is always from a cpu register, and the cpu does bounds checking
+- * during register load --> no further bounds checks needed */
+-#define LDT_DESCRIPTOR(s) (((struct desc_struct *)current->mm->context.ldt)[(s) >> 3])
++#include <asm/desc.h>
++#include <asm/mmu_context.h>
++
++static inline struct desc_struct FPU_get_ldt_descriptor(unsigned seg)
++{
++ static struct desc_struct zero_desc;
++ struct desc_struct ret = zero_desc;
++
++#ifdef CONFIG_MODIFY_LDT_SYSCALL
++ seg >>= 3;
++ mutex_lock(¤t->mm->context.lock);
++ if (current->mm->context.ldt && seg < current->mm->context.ldt->size)
++ ret = current->mm->context.ldt->entries[seg];
++ mutex_unlock(¤t->mm->context.lock);
++#endif
++ return ret;
++}
++
+ #define SEG_D_SIZE(x) ((x).b & (3 << 21))
+ #define SEG_G_BIT(x) ((x).b & (1 << 23))
+ #define SEG_GRANULARITY(x) (((x).b & (1 << 23)) ? 4096 : 1)
+diff --git a/arch/x86/math-emu/get_address.c b/arch/x86/math-emu/get_address.c
+index 6ef5e99380f9..8300db71c2a6 100644
+--- a/arch/x86/math-emu/get_address.c
++++ b/arch/x86/math-emu/get_address.c
+@@ -20,7 +20,6 @@
+ #include <linux/stddef.h>
+
+ #include <asm/uaccess.h>
+-#include <asm/desc.h>
+
+ #include "fpu_system.h"
+ #include "exception.h"
+@@ -158,7 +157,7 @@ static long pm_address(u_char FPU_modrm, u_char segment,
+ addr->selector = PM_REG_(segment);
+ }
+
+- descriptor = LDT_DESCRIPTOR(PM_REG_(segment));
++ descriptor = FPU_get_ldt_descriptor(addr->selector);
+ base_address = SEG_BASE_ADDR(descriptor);
+ address = base_address + offset;
+ limit = base_address
+diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c
+index 757678fb26e1..bf9384488399 100644
+--- a/arch/x86/power/cpu.c
++++ b/arch/x86/power/cpu.c
+@@ -23,6 +23,7 @@
+ #include <asm/debugreg.h>
+ #include <asm/fpu-internal.h> /* pcntxt_mask */
+ #include <asm/cpu.h>
++#include <asm/mmu_context.h>
+
+ #ifdef CONFIG_X86_32
+ __visible unsigned long saved_context_ebx;
+@@ -154,7 +155,7 @@ static void fix_processor_context(void)
+ syscall_init(); /* This sets MSR_*STAR and related */
+ #endif
+ load_TR_desc(); /* This does ltr */
+- load_LDT(¤t->active_mm->context); /* This does lldt */
++ load_mm_ldt(current->active_mm); /* This does lldt */
+ }
+
+ /**
+diff --git a/arch/xtensa/include/asm/traps.h b/arch/xtensa/include/asm/traps.h
+index 677bfcf4ee5d..28f33a8b7f5f 100644
+--- a/arch/xtensa/include/asm/traps.h
++++ b/arch/xtensa/include/asm/traps.h
+@@ -25,30 +25,39 @@ static inline void spill_registers(void)
+ {
+ #if XCHAL_NUM_AREGS > 16
+ __asm__ __volatile__ (
+- " call12 1f\n"
++ " call8 1f\n"
+ " _j 2f\n"
+ " retw\n"
+ " .align 4\n"
+ "1:\n"
++#if XCHAL_NUM_AREGS == 32
++ " _entry a1, 32\n"
++ " addi a8, a0, 3\n"
++ " _entry a1, 16\n"
++ " mov a12, a12\n"
++ " retw\n"
++#else
+ " _entry a1, 48\n"
+- " addi a12, a0, 3\n"
+-#if XCHAL_NUM_AREGS > 32
+- " .rept (" __stringify(XCHAL_NUM_AREGS) " - 32) / 12\n"
++ " call12 1f\n"
++ " retw\n"
++ " .align 4\n"
++ "1:\n"
++ " .rept (" __stringify(XCHAL_NUM_AREGS) " - 16) / 12\n"
+ " _entry a1, 48\n"
+ " mov a12, a0\n"
+ " .endr\n"
+-#endif
+- " _entry a1, 48\n"
++ " _entry a1, 16\n"
+ #if XCHAL_NUM_AREGS % 12 == 0
+- " mov a8, a8\n"
+-#elif XCHAL_NUM_AREGS % 12 == 4
+ " mov a12, a12\n"
+-#elif XCHAL_NUM_AREGS % 12 == 8
++#elif XCHAL_NUM_AREGS % 12 == 4
+ " mov a4, a4\n"
++#elif XCHAL_NUM_AREGS % 12 == 8
++ " mov a8, a8\n"
+ #endif
+ " retw\n"
++#endif
+ "2:\n"
+- : : : "a12", "a13", "memory");
++ : : : "a8", "a9", "memory");
+ #else
+ __asm__ __volatile__ (
+ " mov a12, a12\n"
+diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
+index 82bbfa5a05b3..a2a902140c4e 100644
+--- a/arch/xtensa/kernel/entry.S
++++ b/arch/xtensa/kernel/entry.S
+@@ -568,12 +568,13 @@ user_exception_exit:
+ * (if we have restored WSBITS-1 frames).
+ */
+
++2:
+ #if XCHAL_HAVE_THREADPTR
+ l32i a3, a1, PT_THREADPTR
+ wur a3, threadptr
+ #endif
+
+-2: j common_exception_exit
++ j common_exception_exit
+
+ /* This is the kernel exception exit.
+ * We avoided to do a MOVSP when we entered the exception, but we
+@@ -1820,7 +1821,7 @@ ENDPROC(system_call)
+ mov a12, a0
+ .endr
+ #endif
+- _entry a1, 48
++ _entry a1, 16
+ #if XCHAL_NUM_AREGS % 12 == 0
+ mov a8, a8
+ #elif XCHAL_NUM_AREGS % 12 == 4
+@@ -1844,7 +1845,7 @@ ENDPROC(system_call)
+
+ ENTRY(_switch_to)
+
+- entry a1, 16
++ entry a1, 48
+
+ mov a11, a3 # and 'next' (a3)
+
+diff --git a/drivers/acpi/acpi_pnp.c b/drivers/acpi/acpi_pnp.c
+index ff6d8adc9cda..fb765524cc3d 100644
+--- a/drivers/acpi/acpi_pnp.c
++++ b/drivers/acpi/acpi_pnp.c
+@@ -153,6 +153,7 @@ static const struct acpi_device_id acpi_pnp_device_ids[] = {
+ {"AEI0250"}, /* PROLiNK 1456VH ISA PnP K56flex Fax Modem */
+ {"AEI1240"}, /* Actiontec ISA PNP 56K X2 Fax Modem */
+ {"AKY1021"}, /* Rockwell 56K ACF II Fax+Data+Voice Modem */
++ {"ALI5123"}, /* ALi Fast Infrared Controller */
+ {"AZT4001"}, /* AZT3005 PnP SOUND DEVICE */
+ {"BDP3336"}, /* Best Data Products Inc. Smart One 336F PnP Modem */
+ {"BRI0A49"}, /* Boca Complete Ofc Communicator 14.4 Data-FAX */
+diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
+index cfd7581cc19f..b09ad554430a 100644
+--- a/drivers/acpi/pci_link.c
++++ b/drivers/acpi/pci_link.c
+@@ -826,6 +826,22 @@ void acpi_penalize_isa_irq(int irq, int active)
+ }
+
+ /*
++ * Penalize IRQ used by ACPI SCI. If ACPI SCI pin attributes conflict with
++ * PCI IRQ attributes, mark ACPI SCI as ISA_ALWAYS so it won't be use for
++ * PCI IRQs.
++ */
++void acpi_penalize_sci_irq(int irq, int trigger, int polarity)
++{
++ if (irq >= 0 && irq < ARRAY_SIZE(acpi_irq_penalty)) {
++ if (trigger != ACPI_MADT_TRIGGER_LEVEL ||
++ polarity != ACPI_MADT_POLARITY_ACTIVE_LOW)
++ acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_ALWAYS;
++ else
++ acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
++ }
++}
++
++/*
+ * Over-ride default table to reserve additional IRQs for use by ISA
+ * e.g. acpi_irq_isa=5
+ * Useful for telling ACPI how not to interfere with your ISA sound card.
+diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
+index 65ee94454bbd..e6ea912aee31 100644
+--- a/drivers/ata/ahci.c
++++ b/drivers/ata/ahci.c
+@@ -349,6 +349,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
+ /* JMicron 362B and 362C have an AHCI function with IDE class code */
+ { PCI_VDEVICE(JMICRON, 0x2362), board_ahci_ign_iferr },
+ { PCI_VDEVICE(JMICRON, 0x236f), board_ahci_ign_iferr },
++ /* May need to update quirk_jmicron_async_suspend() for additions */
+
+ /* ATI */
+ { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
+@@ -1377,18 +1378,6 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+ else if (pdev->vendor == 0x1c44 && pdev->device == 0x8000)
+ ahci_pci_bar = AHCI_PCI_BAR_ENMOTUS;
+
+- /*
+- * The JMicron chip 361/363 contains one SATA controller and one
+- * PATA controller,for powering on these both controllers, we must
+- * follow the sequence one by one, otherwise one of them can not be
+- * powered on successfully, so here we disable the async suspend
+- * method for these chips.
+- */
+- if (pdev->vendor == PCI_VENDOR_ID_JMICRON &&
+- (pdev->device == PCI_DEVICE_ID_JMICRON_JMB363 ||
+- pdev->device == PCI_DEVICE_ID_JMICRON_JMB361))
+- device_disable_async_suspend(&pdev->dev);
+-
+ /* acquire resources */
+ rc = pcim_enable_device(pdev);
+ if (rc)
+diff --git a/drivers/ata/pata_jmicron.c b/drivers/ata/pata_jmicron.c
+index 47e418b8c8ba..4d1a5d2c4287 100644
+--- a/drivers/ata/pata_jmicron.c
++++ b/drivers/ata/pata_jmicron.c
+@@ -143,18 +143,6 @@ static int jmicron_init_one (struct pci_dev *pdev, const struct pci_device_id *i
+ };
+ const struct ata_port_info *ppi[] = { &info, NULL };
+
+- /*
+- * The JMicron chip 361/363 contains one SATA controller and one
+- * PATA controller,for powering on these both controllers, we must
+- * follow the sequence one by one, otherwise one of them can not be
+- * powered on successfully, so here we disable the async suspend
+- * method for these chips.
+- */
+- if (pdev->vendor == PCI_VENDOR_ID_JMICRON &&
+- (pdev->device == PCI_DEVICE_ID_JMICRON_JMB363 ||
+- pdev->device == PCI_DEVICE_ID_JMICRON_JMB361))
+- device_disable_async_suspend(&pdev->dev);
+-
+ return ata_pci_bmdma_init_one(pdev, ppi, &jmicron_sht, NULL, 0);
+ }
+
+diff --git a/drivers/auxdisplay/ks0108.c b/drivers/auxdisplay/ks0108.c
+index 5b93852392b8..0d752851a1ee 100644
+--- a/drivers/auxdisplay/ks0108.c
++++ b/drivers/auxdisplay/ks0108.c
+@@ -139,6 +139,7 @@ static int __init ks0108_init(void)
+
+ ks0108_pardevice = parport_register_device(ks0108_parport, KS0108_NAME,
+ NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
++ parport_put_port(ks0108_parport);
+ if (ks0108_pardevice == NULL) {
+ printk(KERN_ERR KS0108_NAME ": ERROR: "
+ "parport didn't register new device\n");
+diff --git a/drivers/base/devres.c b/drivers/base/devres.c
+index c8a53d1e019f..875464690117 100644
+--- a/drivers/base/devres.c
++++ b/drivers/base/devres.c
+@@ -297,10 +297,10 @@ void * devres_get(struct device *dev, void *new_res,
+ if (!dr) {
+ add_dr(dev, &new_dr->node);
+ dr = new_dr;
+- new_dr = NULL;
++ new_res = NULL;
+ }
+ spin_unlock_irqrestore(&dev->devres_lock, flags);
+- devres_free(new_dr);
++ devres_free(new_res);
+
+ return dr->data;
+ }
+diff --git a/drivers/base/platform.c b/drivers/base/platform.c
+index ebf034b97278..7403de94832c 100644
+--- a/drivers/base/platform.c
++++ b/drivers/base/platform.c
+@@ -375,9 +375,7 @@ int platform_device_add(struct platform_device *pdev)
+
+ while (--i >= 0) {
+ struct resource *r = &pdev->resource[i];
+- unsigned long type = resource_type(r);
+-
+- if (type == IORESOURCE_MEM || type == IORESOURCE_IO)
++ if (r->parent)
+ release_resource(r);
+ }
+
+@@ -408,9 +406,7 @@ void platform_device_del(struct platform_device *pdev)
+
+ for (i = 0; i < pdev->num_resources; i++) {
+ struct resource *r = &pdev->resource[i];
+- unsigned long type = resource_type(r);
+-
+- if (type == IORESOURCE_MEM || type == IORESOURCE_IO)
++ if (r->parent)
+ release_resource(r);
+ }
+ }
+diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
+index c7b0fcebf168..ac3c07db92f1 100644
+--- a/drivers/base/power/clock_ops.c
++++ b/drivers/base/power/clock_ops.c
+@@ -37,7 +37,7 @@ struct pm_clock_entry {
+ * @dev: The device for the given clock
+ * @ce: PM clock entry corresponding to the clock.
+ */
+-static inline int __pm_clk_enable(struct device *dev, struct pm_clock_entry *ce)
++static inline void __pm_clk_enable(struct device *dev, struct pm_clock_entry *ce)
+ {
+ int ret;
+
+@@ -49,8 +49,6 @@ static inline int __pm_clk_enable(struct device *dev, struct pm_clock_entry *ce)
+ dev_err(dev, "%s: failed to enable clk %p, error %d\n",
+ __func__, ce->clk, ret);
+ }
+-
+- return ret;
+ }
+
+ /**
+diff --git a/drivers/clk/pistachio/clk-pistachio.c b/drivers/clk/pistachio/clk-pistachio.c
+index 8c0fe8828f99..c4ceb5eaf46c 100644
+--- a/drivers/clk/pistachio/clk-pistachio.c
++++ b/drivers/clk/pistachio/clk-pistachio.c
+@@ -159,9 +159,15 @@ PNAME(mux_debug) = { "mips_pll_mux", "rpu_v_pll_mux",
+ "wifi_pll_mux", "bt_pll_mux" };
+ static u32 mux_debug_idx[] = { 0x0, 0x1, 0x2, 0x4, 0x8, 0x10 };
+
+-static unsigned int pistachio_critical_clks[] __initdata = {
+- CLK_MIPS,
+- CLK_PERIPH_SYS,
++static unsigned int pistachio_critical_clks_core[] __initdata = {
++ CLK_MIPS
++};
++
++static unsigned int pistachio_critical_clks_sys[] __initdata = {
++ PERIPH_CLK_SYS,
++ PERIPH_CLK_SYS_BUS,
++ PERIPH_CLK_DDR,
++ PERIPH_CLK_ROM,
+ };
+
+ static void __init pistachio_clk_init(struct device_node *np)
+@@ -193,8 +199,8 @@ static void __init pistachio_clk_init(struct device_node *np)
+
+ pistachio_clk_register_provider(p);
+
+- pistachio_clk_force_enable(p, pistachio_critical_clks,
+- ARRAY_SIZE(pistachio_critical_clks));
++ pistachio_clk_force_enable(p, pistachio_critical_clks_core,
++ ARRAY_SIZE(pistachio_critical_clks_core));
+ }
+ CLK_OF_DECLARE(pistachio_clk, "img,pistachio-clk", pistachio_clk_init);
+
+@@ -261,6 +267,9 @@ static void __init pistachio_clk_periph_init(struct device_node *np)
+ ARRAY_SIZE(pistachio_periph_gates));
+
+ pistachio_clk_register_provider(p);
++
++ pistachio_clk_force_enable(p, pistachio_critical_clks_sys,
++ ARRAY_SIZE(pistachio_critical_clks_sys));
+ }
+ CLK_OF_DECLARE(pistachio_clk_periph, "img,pistachio-clk-periph",
+ pistachio_clk_periph_init);
+diff --git a/drivers/clk/pistachio/clk-pll.c b/drivers/clk/pistachio/clk-pll.c
+index de537560bf70..ebd0d2a3b5da 100644
+--- a/drivers/clk/pistachio/clk-pll.c
++++ b/drivers/clk/pistachio/clk-pll.c
+@@ -115,8 +115,7 @@ static int pll_gf40lp_frac_enable(struct clk_hw *hw)
+ u32 val;
+
+ val = pll_readl(pll, PLL_CTRL3);
+- val &= ~(PLL_FRAC_CTRL3_PD | PLL_FRAC_CTRL3_DACPD |
+- PLL_FRAC_CTRL3_DSMPD | PLL_FRAC_CTRL3_FOUTPOSTDIVPD |
++ val &= ~(PLL_FRAC_CTRL3_PD | PLL_FRAC_CTRL3_FOUTPOSTDIVPD |
+ PLL_FRAC_CTRL3_FOUT4PHASEPD | PLL_FRAC_CTRL3_FOUTVCOPD);
+ pll_writel(pll, val, PLL_CTRL3);
+
+@@ -233,7 +232,7 @@ static int pll_gf40lp_laint_enable(struct clk_hw *hw)
+ u32 val;
+
+ val = pll_readl(pll, PLL_CTRL1);
+- val &= ~(PLL_INT_CTRL1_PD | PLL_INT_CTRL1_DSMPD |
++ val &= ~(PLL_INT_CTRL1_PD |
+ PLL_INT_CTRL1_FOUTPOSTDIVPD | PLL_INT_CTRL1_FOUTVCOPD);
+ pll_writel(pll, val, PLL_CTRL1);
+
+diff --git a/drivers/clk/pxa/clk-pxa25x.c b/drivers/clk/pxa/clk-pxa25x.c
+index 6cd88d963a7f..542e45ef5087 100644
+--- a/drivers/clk/pxa/clk-pxa25x.c
++++ b/drivers/clk/pxa/clk-pxa25x.c
+@@ -79,7 +79,7 @@ unsigned int pxa25x_get_clk_frequency_khz(int info)
+ clks[3] / 1000000, (clks[3] % 1000000) / 10000);
+ }
+
+- return (unsigned int)clks[0];
++ return (unsigned int)clks[0] / KHz;
+ }
+
+ static unsigned long clk_pxa25x_memory_get_rate(struct clk_hw *hw,
+diff --git a/drivers/clk/pxa/clk-pxa27x.c b/drivers/clk/pxa/clk-pxa27x.c
+index 5f9b54b024b9..267511df1e59 100644
+--- a/drivers/clk/pxa/clk-pxa27x.c
++++ b/drivers/clk/pxa/clk-pxa27x.c
+@@ -80,7 +80,7 @@ unsigned int pxa27x_get_clk_frequency_khz(int info)
+ pr_info("System bus clock: %ld.%02ldMHz\n",
+ clks[4] / 1000000, (clks[4] % 1000000) / 10000);
+ }
+- return (unsigned int)clks[0];
++ return (unsigned int)clks[0] / KHz;
+ }
+
+ bool pxa27x_is_ppll_disabled(void)
+diff --git a/drivers/clk/pxa/clk-pxa3xx.c b/drivers/clk/pxa/clk-pxa3xx.c
+index ac03ba49e9d1..4af4eed5f89f 100644
+--- a/drivers/clk/pxa/clk-pxa3xx.c
++++ b/drivers/clk/pxa/clk-pxa3xx.c
+@@ -78,7 +78,7 @@ unsigned int pxa3xx_get_clk_frequency_khz(int info)
+ pr_info("System bus clock: %ld.%02ldMHz\n",
+ clks[4] / 1000000, (clks[4] % 1000000) / 10000);
+ }
+- return (unsigned int)clks[0];
++ return (unsigned int)clks[0] / KHz;
+ }
+
+ static unsigned long clk_pxa3xx_ac97_get_rate(struct clk_hw *hw,
+diff --git a/drivers/clk/qcom/gcc-apq8084.c b/drivers/clk/qcom/gcc-apq8084.c
+index 54a756b90a37..457c540585f9 100644
+--- a/drivers/clk/qcom/gcc-apq8084.c
++++ b/drivers/clk/qcom/gcc-apq8084.c
+@@ -2105,6 +2105,7 @@ static struct clk_branch gcc_ce1_clk = {
+ "ce1_clk_src",
+ },
+ .num_parents = 1,
++ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_branch2_ops,
+ },
+ },
+diff --git a/drivers/clk/qcom/gcc-msm8916.c b/drivers/clk/qcom/gcc-msm8916.c
+index c66f7bc2ae87..5d75bffab141 100644
+--- a/drivers/clk/qcom/gcc-msm8916.c
++++ b/drivers/clk/qcom/gcc-msm8916.c
+@@ -2278,7 +2278,7 @@ static struct clk_branch gcc_prng_ahb_clk = {
+ .halt_check = BRANCH_HALT_VOTED,
+ .clkr = {
+ .enable_reg = 0x45004,
+- .enable_mask = BIT(0),
++ .enable_mask = BIT(8),
+ .hw.init = &(struct clk_init_data){
+ .name = "gcc_prng_ahb_clk",
+ .parent_names = (const char *[]){
+diff --git a/drivers/clk/qcom/gcc-msm8974.c b/drivers/clk/qcom/gcc-msm8974.c
+index c39d09874e74..f06a082e3e87 100644
+--- a/drivers/clk/qcom/gcc-msm8974.c
++++ b/drivers/clk/qcom/gcc-msm8974.c
+@@ -1783,6 +1783,7 @@ static struct clk_branch gcc_ce1_clk = {
+ "ce1_clk_src",
+ },
+ .num_parents = 1,
++ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_branch2_ops,
+ },
+ },
+diff --git a/drivers/clk/rockchip/clk-rk3288.c b/drivers/clk/rockchip/clk-rk3288.c
+index d17eb4528a28..37f96117fd3d 100644
+--- a/drivers/clk/rockchip/clk-rk3288.c
++++ b/drivers/clk/rockchip/clk-rk3288.c
+@@ -578,7 +578,7 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
+ COMPOSITE(0, "mac_pll_src", mux_pll_src_npll_cpll_gpll_p, 0,
+ RK3288_CLKSEL_CON(21), 0, 2, MFLAGS, 8, 5, DFLAGS,
+ RK3288_CLKGATE_CON(2), 5, GFLAGS),
+- MUX(SCLK_MAC, "mac_clk", mux_mac_p, 0,
++ MUX(SCLK_MAC, "mac_clk", mux_mac_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(21), 4, 1, MFLAGS),
+ GATE(SCLK_MACREF_OUT, "sclk_macref_out", "mac_clk", 0,
+ RK3288_CLKGATE_CON(5), 3, GFLAGS),
+diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
+index 714d6ba782c8..f7890bf652e6 100644
+--- a/drivers/clk/samsung/clk-exynos4.c
++++ b/drivers/clk/samsung/clk-exynos4.c
+@@ -85,6 +85,7 @@
+ #define DIV_PERIL4 0xc560
+ #define DIV_PERIL5 0xc564
+ #define E4X12_DIV_CAM1 0xc568
++#define E4X12_GATE_BUS_FSYS1 0xc744
+ #define GATE_SCLK_CAM 0xc820
+ #define GATE_IP_CAM 0xc920
+ #define GATE_IP_TV 0xc924
+@@ -1095,6 +1096,7 @@ static struct samsung_gate_clock exynos4x12_gate_clks[] __initdata = {
+ 0),
+ GATE(CLK_PPMUIMAGE, "ppmuimage", "aclk200", E4X12_GATE_IP_IMAGE, 9, 0,
+ 0),
++ GATE(CLK_TSADC, "tsadc", "aclk133", E4X12_GATE_BUS_FSYS1, 16, 0, 0),
+ GATE(CLK_MIPI_HSI, "mipi_hsi", "aclk133", GATE_IP_FSYS, 10, 0, 0),
+ GATE(CLK_CHIPID, "chipid", "aclk100", E4X12_GATE_IP_PERIR, 0, 0, 0),
+ GATE(CLK_SYSREG, "sysreg", "aclk100", E4X12_GATE_IP_PERIR, 1,
+diff --git a/drivers/clk/samsung/clk-s5pv210.c b/drivers/clk/samsung/clk-s5pv210.c
+index e668e479a697..bdd284249cc3 100644
+--- a/drivers/clk/samsung/clk-s5pv210.c
++++ b/drivers/clk/samsung/clk-s5pv210.c
+@@ -828,6 +828,8 @@ static void __init __s5pv210_clk_init(struct device_node *np,
+
+ s5pv210_clk_sleep_init();
+
++ samsung_clk_of_add_provider(np, ctx);
++
+ pr_info("%s clocks: mout_apll = %ld, mout_mpll = %ld\n"
+ "\tmout_epll = %ld, mout_vpll = %ld\n",
+ is_s5p6442 ? "S5P6442" : "S5PV210",
+diff --git a/drivers/clk/versatile/clk-sp810.c b/drivers/clk/versatile/clk-sp810.c
+index c6e86a9a2aa3..5122ef25f595 100644
+--- a/drivers/clk/versatile/clk-sp810.c
++++ b/drivers/clk/versatile/clk-sp810.c
+@@ -128,8 +128,8 @@ static struct clk *clk_sp810_timerclken_of_get(struct of_phandle_args *clkspec,
+ {
+ struct clk_sp810 *sp810 = data;
+
+- if (WARN_ON(clkspec->args_count != 1 || clkspec->args[0] >
+- ARRAY_SIZE(sp810->timerclken)))
++ if (WARN_ON(clkspec->args_count != 1 ||
++ clkspec->args[0] >= ARRAY_SIZE(sp810->timerclken)))
+ return NULL;
+
+ return sp810->timerclken[clkspec->args[0]].clk;
+diff --git a/drivers/crypto/vmx/ghashp8-ppc.pl b/drivers/crypto/vmx/ghashp8-ppc.pl
+index 0a6f899839dd..d8429cb71f02 100644
+--- a/drivers/crypto/vmx/ghashp8-ppc.pl
++++ b/drivers/crypto/vmx/ghashp8-ppc.pl
+@@ -61,6 +61,12 @@ $code=<<___;
+ mtspr 256,r0
+ li r10,0x30
+ lvx_u $H,0,r4 # load H
++ le?xor r7,r7,r7
++ le?addi r7,r7,0x8 # need a vperm start with 08
++ le?lvsr 5,0,r7
++ le?vspltisb 6,0x0f
++ le?vxor 5,5,6 # set a b-endian mask
++ le?vperm $H,$H,$H,5
+
+ vspltisb $xC2,-16 # 0xf0
+ vspltisb $t0,1 # one
+diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
+index a19d2c71e205..fb91df1631d9 100644
+--- a/drivers/gpu/drm/i915/i915_drv.c
++++ b/drivers/gpu/drm/i915/i915_drv.c
+@@ -647,15 +647,18 @@ static int i915_drm_suspend_late(struct drm_device *drm_dev, bool hibernation)
+
+ pci_disable_device(drm_dev->pdev);
+ /*
+- * During hibernation on some GEN4 platforms the BIOS may try to access
++ * During hibernation on some platforms the BIOS may try to access
+ * the device even though it's already in D3 and hang the machine. So
+ * leave the device in D0 on those platforms and hope the BIOS will
+- * power down the device properly. Platforms where this was seen:
+- * Lenovo Thinkpad X301, X61s
++ * power down the device properly. The issue was seen on multiple old
++ * GENs with different BIOS vendors, so having an explicit blacklist
++ * is inpractical; apply the workaround on everything pre GEN6. The
++ * platforms where the issue was seen:
++ * Lenovo Thinkpad X301, X61s, X60, T60, X41
++ * Fujitsu FSC S7110
++ * Acer Aspire 1830T
+ */
+- if (!(hibernation &&
+- drm_dev->pdev->subsystem_vendor == PCI_VENDOR_ID_LENOVO &&
+- INTEL_INFO(dev_priv)->gen == 4))
++ if (!(hibernation && INTEL_INFO(dev_priv)->gen < 6))
+ pci_set_power_state(drm_dev->pdev, PCI_D3hot);
+
+ return 0;
+diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
+index 683a9b004c11..7d53d7e15455 100644
+--- a/drivers/gpu/drm/i915/i915_drv.h
++++ b/drivers/gpu/drm/i915/i915_drv.h
+@@ -3190,13 +3190,13 @@ int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
+ #define I915_READ64(reg) dev_priv->uncore.funcs.mmio_readq(dev_priv, (reg), true)
+
+ #define I915_READ64_2x32(lower_reg, upper_reg) ({ \
+- u32 upper, lower, tmp; \
+- tmp = I915_READ(upper_reg); \
++ u32 upper, lower, old_upper, loop = 0; \
++ upper = I915_READ(upper_reg); \
+ do { \
+- upper = tmp; \
++ old_upper = upper; \
+ lower = I915_READ(lower_reg); \
+- tmp = I915_READ(upper_reg); \
+- } while (upper != tmp); \
++ upper = I915_READ(upper_reg); \
++ } while (upper != old_upper && loop++ < 2); \
+ (u64)upper << 32 | lower; })
+
+ #define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
+diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+index a3190e793ed4..479024a4caad 100644
+--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
++++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+@@ -1025,6 +1025,7 @@ i915_gem_execbuffer_move_to_active(struct list_head *vmas,
+ u32 old_read = obj->base.read_domains;
+ u32 old_write = obj->base.write_domain;
+
++ obj->dirty = 1; /* be paranoid */
+ obj->base.write_domain = obj->base.pending_write_domain;
+ if (obj->base.write_domain == 0)
+ obj->base.pending_read_domains |= obj->base.read_domains;
+@@ -1032,7 +1033,6 @@ i915_gem_execbuffer_move_to_active(struct list_head *vmas,
+
+ i915_vma_move_to_active(vma, ring);
+ if (obj->base.write_domain) {
+- obj->dirty = 1;
+ i915_gem_request_assign(&obj->last_write_req, req);
+
+ intel_fb_obj_invalidate(obj, ring, ORIGIN_CS);
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index 57c887843dc3..f208bbc6d58e 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -13781,6 +13781,24 @@ void intel_modeset_init(struct drm_device *dev)
+ if (INTEL_INFO(dev)->num_pipes == 0)
+ return;
+
++ /*
++ * There may be no VBT; and if the BIOS enabled SSC we can
++ * just keep using it to avoid unnecessary flicker. Whereas if the
++ * BIOS isn't using it, don't assume it will work even if the VBT
++ * indicates as much.
++ */
++ if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
++ bool bios_lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
++ DREF_SSC1_ENABLE);
++
++ if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
++ DRM_DEBUG_KMS("SSC %sabled by BIOS, overriding VBT which says %sabled\n",
++ bios_lvds_use_ssc ? "en" : "dis",
++ dev_priv->vbt.lvds_use_ssc ? "en" : "dis");
++ dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
++ }
++ }
++
+ intel_init_display(dev);
+ intel_init_audio(dev);
+
+@@ -14266,7 +14284,6 @@ void intel_modeset_setup_hw_state(struct drm_device *dev,
+
+ void intel_modeset_gem_init(struct drm_device *dev)
+ {
+- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *c;
+ struct drm_i915_gem_object *obj;
+ int ret;
+@@ -14275,16 +14292,6 @@ void intel_modeset_gem_init(struct drm_device *dev)
+ intel_init_gt_powersave(dev);
+ mutex_unlock(&dev->struct_mutex);
+
+- /*
+- * There may be no VBT; and if the BIOS enabled SSC we can
+- * just keep using it to avoid unnecessary flicker. Whereas if the
+- * BIOS isn't using it, don't assume it will work even if the VBT
+- * indicates as much.
+- */
+- if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+- dev_priv->vbt.lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
+- DREF_SSC1_ENABLE);
+-
+ intel_modeset_init_hw(dev);
+
+ intel_setup_overlay(dev);
+diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
+index b1fe32b119ef..fb2983f77141 100644
+--- a/drivers/gpu/drm/i915/intel_dp.c
++++ b/drivers/gpu/drm/i915/intel_dp.c
+@@ -4691,9 +4691,12 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
+
+ intel_dp_probe_oui(intel_dp);
+
+- if (!intel_dp_probe_mst(intel_dp))
++ if (!intel_dp_probe_mst(intel_dp)) {
++ drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
++ intel_dp_check_link_status(intel_dp);
++ drm_modeset_unlock(&dev->mode_config.connection_mutex);
+ goto mst_fail;
+-
++ }
+ } else {
+ if (intel_dp->is_mst) {
+ if (intel_dp_check_mst_status(intel_dp) == -EINVAL)
+@@ -4701,10 +4704,6 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
+ }
+
+ if (!intel_dp->is_mst) {
+- /*
+- * we'll check the link status via the normal hot plug path later -
+- * but for short hpds we should check it now
+- */
+ drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+ intel_dp_check_link_status(intel_dp);
+ drm_modeset_unlock(&dev->mode_config.connection_mutex);
+diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
+index 51966426addf..c7a0b8d8fac9 100644
+--- a/drivers/gpu/drm/i915/intel_dsi.c
++++ b/drivers/gpu/drm/i915/intel_dsi.c
+@@ -1036,11 +1036,7 @@ void intel_dsi_init(struct drm_device *dev)
+ intel_connector->unregister = intel_connector_unregister;
+
+ /* Pipe A maps to MIPI DSI port A, pipe B maps to MIPI DSI port C */
+- if (dev_priv->vbt.dsi.config->dual_link) {
+- /* XXX: does dual link work on either pipe? */
+- intel_encoder->crtc_mask = (1 << PIPE_A);
+- intel_dsi->ports = ((1 << PORT_A) | (1 << PORT_C));
+- } else if (dev_priv->vbt.dsi.port == DVO_PORT_MIPIA) {
++ if (dev_priv->vbt.dsi.port == DVO_PORT_MIPIA) {
+ intel_encoder->crtc_mask = (1 << PIPE_A);
+ intel_dsi->ports = (1 << PORT_A);
+ } else if (dev_priv->vbt.dsi.port == DVO_PORT_MIPIC) {
+@@ -1048,6 +1044,9 @@ void intel_dsi_init(struct drm_device *dev)
+ intel_dsi->ports = (1 << PORT_C);
+ }
+
++ if (dev_priv->vbt.dsi.config->dual_link)
++ intel_dsi->ports = ((1 << PORT_A) | (1 << PORT_C));
++
+ /* Create a DSI host (and a device) for each port. */
+ for_each_dsi_port(port, intel_dsi->ports) {
+ struct intel_dsi_host *host;
+diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
+index 4a0a8b29b0a1..32248791bc4b 100644
+--- a/drivers/gpu/drm/qxl/qxl_display.c
++++ b/drivers/gpu/drm/qxl/qxl_display.c
+@@ -160,9 +160,35 @@ static int qxl_add_monitors_config_modes(struct drm_connector *connector,
+ *pwidth = head->width;
+ *pheight = head->height;
+ drm_mode_probed_add(connector, mode);
++ /* remember the last custom size for mode validation */
++ qdev->monitors_config_width = mode->hdisplay;
++ qdev->monitors_config_height = mode->vdisplay;
+ return 1;
+ }
+
++static struct mode_size {
++ int w;
++ int h;
++} common_modes[] = {
++ { 640, 480},
++ { 720, 480},
++ { 800, 600},
++ { 848, 480},
++ {1024, 768},
++ {1152, 768},
++ {1280, 720},
++ {1280, 800},
++ {1280, 854},
++ {1280, 960},
++ {1280, 1024},
++ {1440, 900},
++ {1400, 1050},
++ {1680, 1050},
++ {1600, 1200},
++ {1920, 1080},
++ {1920, 1200}
++};
++
+ static int qxl_add_common_modes(struct drm_connector *connector,
+ unsigned pwidth,
+ unsigned pheight)
+@@ -170,29 +196,6 @@ static int qxl_add_common_modes(struct drm_connector *connector,
+ struct drm_device *dev = connector->dev;
+ struct drm_display_mode *mode = NULL;
+ int i;
+- struct mode_size {
+- int w;
+- int h;
+- } common_modes[] = {
+- { 640, 480},
+- { 720, 480},
+- { 800, 600},
+- { 848, 480},
+- {1024, 768},
+- {1152, 768},
+- {1280, 720},
+- {1280, 800},
+- {1280, 854},
+- {1280, 960},
+- {1280, 1024},
+- {1440, 900},
+- {1400, 1050},
+- {1680, 1050},
+- {1600, 1200},
+- {1920, 1080},
+- {1920, 1200}
+- };
+-
+ for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
+ mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h,
+ 60, false, false, false);
+@@ -823,11 +826,22 @@ static int qxl_conn_get_modes(struct drm_connector *connector)
+ static int qxl_conn_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+ {
++ struct drm_device *ddev = connector->dev;
++ struct qxl_device *qdev = ddev->dev_private;
++ int i;
++
+ /* TODO: is this called for user defined modes? (xrandr --add-mode)
+ * TODO: check that the mode fits in the framebuffer */
+- DRM_DEBUG("%s: %dx%d status=%d\n", mode->name, mode->hdisplay,
+- mode->vdisplay, mode->status);
+- return MODE_OK;
++
++ if(qdev->monitors_config_width == mode->hdisplay &&
++ qdev->monitors_config_height == mode->vdisplay)
++ return MODE_OK;
++
++ for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
++ if (common_modes[i].w == mode->hdisplay && common_modes[i].h == mode->vdisplay)
++ return MODE_OK;
++ }
++ return MODE_BAD;
+ }
+
+ static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
+diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
+index 7c6cafe21f5f..e66143cc1a7a 100644
+--- a/drivers/gpu/drm/qxl/qxl_drv.h
++++ b/drivers/gpu/drm/qxl/qxl_drv.h
+@@ -325,6 +325,8 @@ struct qxl_device {
+ struct work_struct fb_work;
+
+ struct drm_property *hotplug_mode_update_property;
++ int monitors_config_width;
++ int monitors_config_height;
+ };
+
+ /* forward declaration for QXL_INFO_IO */
+diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
+index b435c859dcbc..447dbfa6c793 100644
+--- a/drivers/gpu/drm/radeon/atombios_dp.c
++++ b/drivers/gpu/drm/radeon/atombios_dp.c
+@@ -171,8 +171,9 @@ radeon_dp_aux_transfer_atom(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
+ return -E2BIG;
+
+ tx_buf[0] = msg->address & 0xff;
+- tx_buf[1] = msg->address >> 8;
+- tx_buf[2] = msg->request << 4;
++ tx_buf[1] = (msg->address >> 8) & 0xff;
++ tx_buf[2] = (msg->request << 4) |
++ ((msg->address >> 16) & 0xf);
+ tx_buf[3] = msg->size ? (msg->size - 1) : 0;
+
+ switch (msg->request & ~DP_AUX_I2C_MOT) {
+diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c
+index 59b3d3221294..d77dd1430d58 100644
+--- a/drivers/gpu/drm/radeon/radeon_audio.c
++++ b/drivers/gpu/drm/radeon/radeon_audio.c
+@@ -522,13 +522,15 @@ static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,
+ return err;
+ }
+
+- if (drm_rgb_quant_range_selectable(radeon_connector_edid(connector))) {
+- if (radeon_encoder->output_csc == RADEON_OUTPUT_CSC_TVRGB)
+- frame.quantization_range = HDMI_QUANTIZATION_RANGE_LIMITED;
+- else
+- frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
+- } else {
+- frame.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
++ if (radeon_encoder->output_csc != RADEON_OUTPUT_CSC_BYPASS) {
++ if (drm_rgb_quant_range_selectable(radeon_connector_edid(connector))) {
++ if (radeon_encoder->output_csc == RADEON_OUTPUT_CSC_TVRGB)
++ frame.quantization_range = HDMI_QUANTIZATION_RANGE_LIMITED;
++ else
++ frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
++ } else {
++ frame.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
++ }
+ }
+
+ err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
+diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
+index 94b21ae70ef7..5a2cafb4f1bc 100644
+--- a/drivers/gpu/drm/radeon/radeon_connectors.c
++++ b/drivers/gpu/drm/radeon/radeon_connectors.c
+@@ -95,6 +95,11 @@ void radeon_connector_hotplug(struct drm_connector *connector)
+ if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) {
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+ } else if (radeon_dp_needs_link_train(radeon_connector)) {
++ /* Don't try to start link training before we
++ * have the dpcd */
++ if (!radeon_dp_getdpcd(radeon_connector))
++ return;
++
+ /* set it to OFF so that drm_helper_connector_dpms()
+ * won't return immediately since the current state
+ * is ON at this point.
+diff --git a/drivers/gpu/drm/radeon/radeon_dp_auxch.c b/drivers/gpu/drm/radeon/radeon_dp_auxch.c
+index fcbd60bb0349..3b0c229d7dcd 100644
+--- a/drivers/gpu/drm/radeon/radeon_dp_auxch.c
++++ b/drivers/gpu/drm/radeon/radeon_dp_auxch.c
+@@ -116,8 +116,8 @@ radeon_dp_aux_transfer_native(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg
+ AUX_SW_WR_BYTES(bytes));
+
+ /* write the data header into the registers */
+- /* request, addres, msg size */
+- byte = (msg->request << 4);
++ /* request, address, msg size */
++ byte = (msg->request << 4) | ((msg->address >> 16) & 0xf);
+ WREG32(AUX_SW_DATA + aux_offset[instance],
+ AUX_SW_DATA_MASK(byte) | AUX_SW_AUTOINCREMENT_DISABLE);
+
+diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
+index a2dbbbe0d8d7..39bf74793b8b 100644
+--- a/drivers/hid/hid-cp2112.c
++++ b/drivers/hid/hid-cp2112.c
+@@ -537,7 +537,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
+ struct cp2112_device *dev = (struct cp2112_device *)adap->algo_data;
+ struct hid_device *hdev = dev->hdev;
+ u8 buf[64];
+- __be16 word;
++ __le16 word;
+ ssize_t count;
+ size_t read_length = 0;
+ unsigned int retries;
+@@ -554,7 +554,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
+ if (I2C_SMBUS_READ == read_write)
+ count = cp2112_read_req(buf, addr, read_length);
+ else
+- count = cp2112_write_req(buf, addr, data->byte, NULL,
++ count = cp2112_write_req(buf, addr, command, NULL,
+ 0);
+ break;
+ case I2C_SMBUS_BYTE_DATA:
+@@ -569,7 +569,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
+ break;
+ case I2C_SMBUS_WORD_DATA:
+ read_length = 2;
+- word = cpu_to_be16(data->word);
++ word = cpu_to_le16(data->word);
+
+ if (I2C_SMBUS_READ == read_write)
+ count = cp2112_write_read_req(buf, addr, read_length,
+@@ -582,7 +582,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
+ size = I2C_SMBUS_WORD_DATA;
+ read_write = I2C_SMBUS_READ;
+ read_length = 2;
+- word = cpu_to_be16(data->word);
++ word = cpu_to_le16(data->word);
+
+ count = cp2112_write_read_req(buf, addr, read_length, command,
+ (u8 *)&word, 2);
+@@ -675,7 +675,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
+ data->byte = buf[0];
+ break;
+ case I2C_SMBUS_WORD_DATA:
+- data->word = be16_to_cpup((__be16 *)buf);
++ data->word = le16_to_cpup((__le16 *)buf);
+ break;
+ case I2C_SMBUS_BLOCK_DATA:
+ if (read_length > I2C_SMBUS_BLOCK_MAX) {
+diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
+index bfbe1bedda7f..eab5bd6a2442 100644
+--- a/drivers/hid/usbhid/hid-core.c
++++ b/drivers/hid/usbhid/hid-core.c
+@@ -164,7 +164,7 @@ static void hid_io_error(struct hid_device *hid)
+ if (time_after(jiffies, usbhid->stop_retry)) {
+
+ /* Retries failed, so do a port reset unless we lack bandwidth*/
+- if (test_bit(HID_NO_BANDWIDTH, &usbhid->iofl)
++ if (!test_bit(HID_NO_BANDWIDTH, &usbhid->iofl)
+ && !test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) {
+
+ schedule_work(&usbhid->reset_work);
+diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
+index b3d0e94f72eb..8d2439345673 100644
+--- a/drivers/iio/gyro/Kconfig
++++ b/drivers/iio/gyro/Kconfig
+@@ -53,7 +53,8 @@ config ADXRS450
+ config BMG160
+ tristate "BOSCH BMG160 Gyro Sensor"
+ depends on I2C
+- select IIO_TRIGGERED_BUFFER if IIO_BUFFER
++ select IIO_BUFFER
++ select IIO_TRIGGERED_BUFFER
+ help
+ Say yes here to build support for Bosch BMG160 Tri-axis Gyro Sensor
+ driver. This driver also supports BMI055 gyroscope.
+diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c
+index 2fd68f2219a7..d42e4fe2c7ed 100644
+--- a/drivers/iio/imu/adis16400_core.c
++++ b/drivers/iio/imu/adis16400_core.c
+@@ -780,7 +780,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
+ .flags = ADIS16400_HAS_PROD_ID |
+ ADIS16400_HAS_SERIAL_NUMBER |
+ ADIS16400_BURST_DIAG_STAT,
+- .gyro_scale_micro = IIO_DEGREE_TO_RAD(10000), /* 0.01 deg/s */
++ .gyro_scale_micro = IIO_DEGREE_TO_RAD(40000), /* 0.04 deg/s */
+ .accel_scale_micro = IIO_G_TO_M_S_2(833), /* 1/1200 g */
+ .temp_scale_nano = 73860000, /* 0.07386 C */
+ .temp_offset = 31000000 / 73860, /* 31 C = 0x00 */
+diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
+index 989605dd6f78..b94bfd3f595b 100644
+--- a/drivers/iio/imu/adis16480.c
++++ b/drivers/iio/imu/adis16480.c
+@@ -110,6 +110,10 @@
+ struct adis16480_chip_info {
+ unsigned int num_channels;
+ const struct iio_chan_spec *channels;
++ unsigned int gyro_max_val;
++ unsigned int gyro_max_scale;
++ unsigned int accel_max_val;
++ unsigned int accel_max_scale;
+ };
+
+ struct adis16480 {
+@@ -497,19 +501,21 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
+ static int adis16480_read_raw(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int *val, int *val2, long info)
+ {
++ struct adis16480 *st = iio_priv(indio_dev);
++
+ switch (info) {
+ case IIO_CHAN_INFO_RAW:
+ return adis_single_conversion(indio_dev, chan, 0, val);
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_ANGL_VEL:
+- *val = 0;
+- *val2 = IIO_DEGREE_TO_RAD(20000); /* 0.02 degree/sec */
+- return IIO_VAL_INT_PLUS_MICRO;
++ *val = st->chip_info->gyro_max_scale;
++ *val2 = st->chip_info->gyro_max_val;
++ return IIO_VAL_FRACTIONAL;
+ case IIO_ACCEL:
+- *val = 0;
+- *val2 = IIO_G_TO_M_S_2(800); /* 0.8 mg */
+- return IIO_VAL_INT_PLUS_MICRO;
++ *val = st->chip_info->accel_max_scale;
++ *val2 = st->chip_info->accel_max_val;
++ return IIO_VAL_FRACTIONAL;
+ case IIO_MAGN:
+ *val = 0;
+ *val2 = 100; /* 0.0001 gauss */
+@@ -674,18 +680,39 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
+ [ADIS16375] = {
+ .channels = adis16485_channels,
+ .num_channels = ARRAY_SIZE(adis16485_channels),
++ /*
++ * storing the value in rad/degree and the scale in degree
++ * gives us the result in rad and better precession than
++ * storing the scale directly in rad.
++ */
++ .gyro_max_val = IIO_RAD_TO_DEGREE(22887),
++ .gyro_max_scale = 300,
++ .accel_max_val = IIO_M_S_2_TO_G(21973),
++ .accel_max_scale = 18,
+ },
+ [ADIS16480] = {
+ .channels = adis16480_channels,
+ .num_channels = ARRAY_SIZE(adis16480_channels),
++ .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
++ .gyro_max_scale = 450,
++ .accel_max_val = IIO_M_S_2_TO_G(12500),
++ .accel_max_scale = 5,
+ },
+ [ADIS16485] = {
+ .channels = adis16485_channels,
+ .num_channels = ARRAY_SIZE(adis16485_channels),
++ .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
++ .gyro_max_scale = 450,
++ .accel_max_val = IIO_M_S_2_TO_G(20000),
++ .accel_max_scale = 5,
+ },
+ [ADIS16488] = {
+ .channels = adis16480_channels,
+ .num_channels = ARRAY_SIZE(adis16480_channels),
++ .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
++ .gyro_max_scale = 450,
++ .accel_max_val = IIO_M_S_2_TO_G(22500),
++ .accel_max_scale = 18,
+ },
+ };
+
+diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
+index df919f44d513..7fa280b28ecb 100644
+--- a/drivers/iio/industrialio-buffer.c
++++ b/drivers/iio/industrialio-buffer.c
+@@ -151,7 +151,7 @@ unsigned int iio_buffer_poll(struct file *filp,
+ struct iio_buffer *rb = indio_dev->buffer;
+
+ if (!indio_dev->info)
+- return -ENODEV;
++ return 0;
+
+ poll_wait(filp, &rb->pollq, wait);
+ if (iio_buffer_ready(indio_dev, rb, rb->watermark, 0))
+diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
+index a99692ba91bc..69b8c338fa89 100644
+--- a/drivers/iio/industrialio-event.c
++++ b/drivers/iio/industrialio-event.c
+@@ -84,7 +84,7 @@ static unsigned int iio_event_poll(struct file *filep,
+ unsigned int events = 0;
+
+ if (!indio_dev->info)
+- return -ENODEV;
++ return events;
+
+ poll_wait(filep, &ev_int->wait, wait);
+
+diff --git a/drivers/of/address.c b/drivers/of/address.c
+index 8bfda6ade2c0..384574c3987c 100644
+--- a/drivers/of/address.c
++++ b/drivers/of/address.c
+@@ -845,10 +845,10 @@ struct device_node *of_find_matching_node_by_address(struct device_node *from,
+ struct resource res;
+
+ while (dn) {
+- if (of_address_to_resource(dn, 0, &res))
+- continue;
+- if (res.start == base_address)
++ if (!of_address_to_resource(dn, 0, &res) &&
++ res.start == base_address)
+ return dn;
++
+ dn = of_find_matching_node(dn, matches);
+ }
+
+diff --git a/drivers/pci/access.c b/drivers/pci/access.c
+index d9b64a175990..b965c12168b7 100644
+--- a/drivers/pci/access.c
++++ b/drivers/pci/access.c
+@@ -439,6 +439,56 @@ static const struct pci_vpd_ops pci_vpd_pci22_ops = {
+ .release = pci_vpd_pci22_release,
+ };
+
++static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count,
++ void *arg)
++{
++ struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
++ ssize_t ret;
++
++ if (!tdev)
++ return -ENODEV;
++
++ ret = pci_read_vpd(tdev, pos, count, arg);
++ pci_dev_put(tdev);
++ return ret;
++}
++
++static ssize_t pci_vpd_f0_write(struct pci_dev *dev, loff_t pos, size_t count,
++ const void *arg)
++{
++ struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
++ ssize_t ret;
++
++ if (!tdev)
++ return -ENODEV;
++
++ ret = pci_write_vpd(tdev, pos, count, arg);
++ pci_dev_put(tdev);
++ return ret;
++}
++
++static const struct pci_vpd_ops pci_vpd_f0_ops = {
++ .read = pci_vpd_f0_read,
++ .write = pci_vpd_f0_write,
++ .release = pci_vpd_pci22_release,
++};
++
++static int pci_vpd_f0_dev_check(struct pci_dev *dev)
++{
++ struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
++ int ret = 0;
++
++ if (!tdev)
++ return -ENODEV;
++ if (!tdev->vpd || !tdev->multifunction ||
++ dev->class != tdev->class || dev->vendor != tdev->vendor ||
++ dev->device != tdev->device)
++ ret = -ENODEV;
++
++ pci_dev_put(tdev);
++ return ret;
++}
++
+ int pci_vpd_pci22_init(struct pci_dev *dev)
+ {
+ struct pci_vpd_pci22 *vpd;
+@@ -447,12 +497,21 @@ int pci_vpd_pci22_init(struct pci_dev *dev)
+ cap = pci_find_capability(dev, PCI_CAP_ID_VPD);
+ if (!cap)
+ return -ENODEV;
++ if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0) {
++ int ret = pci_vpd_f0_dev_check(dev);
++
++ if (ret)
++ return ret;
++ }
+ vpd = kzalloc(sizeof(*vpd), GFP_ATOMIC);
+ if (!vpd)
+ return -ENOMEM;
+
+ vpd->base.len = PCI_VPD_PCI22_SIZE;
+- vpd->base.ops = &pci_vpd_pci22_ops;
++ if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0)
++ vpd->base.ops = &pci_vpd_f0_ops;
++ else
++ vpd->base.ops = &pci_vpd_pci22_ops;
+ mutex_init(&vpd->lock);
+ vpd->cap = cap;
+ vpd->busy = false;
+diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
+index c6dc1dfd25d5..804cd3b02c66 100644
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -1576,6 +1576,18 @@ DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB3
+
+ #endif
+
++static void quirk_jmicron_async_suspend(struct pci_dev *dev)
++{
++ if (dev->multifunction) {
++ device_disable_async_suspend(&dev->dev);
++ dev_info(&dev->dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
++ }
++}
++DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
++DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
++DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
++DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
++
+ #ifdef CONFIG_X86_IO_APIC
+ static void quirk_alder_ioapic(struct pci_dev *pdev)
+ {
+@@ -1903,6 +1915,15 @@ static void quirk_netmos(struct pci_dev *dev)
+ DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
+
++static void quirk_f0_vpd_link(struct pci_dev *dev)
++{
++ if (!dev->multifunction || !PCI_FUNC(dev->devfn))
++ return;
++ dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
++}
++DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
++ PCI_CLASS_NETWORK_ETHERNET, 8, quirk_f0_vpd_link);
++
+ static void quirk_e100_interrupt(struct pci_dev *dev)
+ {
+ u16 command, pmcsr;
+@@ -2838,12 +2859,15 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
+
+ static void fixup_ti816x_class(struct pci_dev *dev)
+ {
++ u32 class = dev->class;
++
+ /* TI 816x devices do not have class code set when in PCIe boot mode */
+- dev_info(&dev->dev, "Setting PCI class for 816x PCIe device\n");
+- dev->class = PCI_CLASS_MULTIMEDIA_VIDEO;
++ dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
++ dev_info(&dev->dev, "PCI class overridden (%#08x -> %#08x)\n",
++ class, dev->class);
+ }
+ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
+- PCI_CLASS_NOT_DEFINED, 0, fixup_ti816x_class);
++ PCI_CLASS_NOT_DEFINED, 0, fixup_ti816x_class);
+
+ /* Some PCIe devices do not work reliably with the claimed maximum
+ * payload size supported.
+diff --git a/drivers/regulator/pbias-regulator.c b/drivers/regulator/pbias-regulator.c
+index bd2b75c0d1d1..4fa7bcaf454e 100644
+--- a/drivers/regulator/pbias-regulator.c
++++ b/drivers/regulator/pbias-regulator.c
+@@ -30,6 +30,7 @@
+ struct pbias_reg_info {
+ u32 enable;
+ u32 enable_mask;
++ u32 disable_val;
+ u32 vmode;
+ unsigned int enable_time;
+ char *name;
+@@ -62,6 +63,7 @@ static const struct pbias_reg_info pbias_mmc_omap2430 = {
+ .enable = BIT(1),
+ .enable_mask = BIT(1),
+ .vmode = BIT(0),
++ .disable_val = 0,
+ .enable_time = 100,
+ .name = "pbias_mmc_omap2430"
+ };
+@@ -77,6 +79,7 @@ static const struct pbias_reg_info pbias_sim_omap3 = {
+ static const struct pbias_reg_info pbias_mmc_omap4 = {
+ .enable = BIT(26) | BIT(22),
+ .enable_mask = BIT(26) | BIT(25) | BIT(22),
++ .disable_val = BIT(25),
+ .vmode = BIT(21),
+ .enable_time = 100,
+ .name = "pbias_mmc_omap4"
+@@ -85,6 +88,7 @@ static const struct pbias_reg_info pbias_mmc_omap4 = {
+ static const struct pbias_reg_info pbias_mmc_omap5 = {
+ .enable = BIT(27) | BIT(26),
+ .enable_mask = BIT(27) | BIT(25) | BIT(26),
++ .disable_val = BIT(25),
+ .vmode = BIT(21),
+ .enable_time = 100,
+ .name = "pbias_mmc_omap5"
+@@ -159,6 +163,7 @@ static int pbias_regulator_probe(struct platform_device *pdev)
+ drvdata[data_idx].desc.enable_reg = res->start;
+ drvdata[data_idx].desc.enable_mask = info->enable_mask;
+ drvdata[data_idx].desc.enable_val = info->enable;
++ drvdata[data_idx].desc.disable_val = info->disable_val;
+
+ cfg.init_data = pbias_matches[idx].init_data;
+ cfg.driver_data = &drvdata[data_idx];
+diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
+index 1efa4fdb7fe2..f45cd0cb1b32 100644
+--- a/drivers/s390/char/sclp_early.c
++++ b/drivers/s390/char/sclp_early.c
+@@ -7,6 +7,7 @@
+ #define KMSG_COMPONENT "sclp_early"
+ #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
++#include <linux/errno.h>
+ #include <asm/ctl_reg.h>
+ #include <asm/sclp.h>
+ #include <asm/ipl.h>
+diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
+index c956395cf46f..c89bada875f8 100644
+--- a/drivers/soc/tegra/pmc.c
++++ b/drivers/soc/tegra/pmc.c
+@@ -732,12 +732,12 @@ void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc)
+ u32 value, checksum;
+
+ if (!pmc->soc->has_tsense_reset)
+- goto out;
++ return;
+
+ np = of_find_node_by_name(pmc->dev->of_node, "i2c-thermtrip");
+ if (!np) {
+ dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled);
+- goto out;
++ return;
+ }
+
+ if (of_property_read_u32(np, "nvidia,i2c-controller-id", &ctrl_id)) {
+diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
+index 37875cf942f7..a5067739ee93 100644
+--- a/drivers/spi/spi-bcm2835.c
++++ b/drivers/spi/spi-bcm2835.c
+@@ -257,13 +257,11 @@ static int bcm2835_spi_transfer_one(struct spi_master *master,
+ spi_used_hz = cdiv ? (clk_hz / cdiv) : (clk_hz / 65536);
+ bcm2835_wr(bs, BCM2835_SPI_CLK, cdiv);
+
+- /* handle all the modes */
++ /* handle all the 3-wire mode */
+ if ((spi->mode & SPI_3WIRE) && (tfr->rx_buf))
+ cs |= BCM2835_SPI_CS_REN;
+- if (spi->mode & SPI_CPOL)
+- cs |= BCM2835_SPI_CS_CPOL;
+- if (spi->mode & SPI_CPHA)
+- cs |= BCM2835_SPI_CS_CPHA;
++ else
++ cs &= ~BCM2835_SPI_CS_REN;
+
+ /* for gpio_cs set dummy CS so that no HW-CS get changed
+ * we can not run this in bcm2835_spi_set_cs, as it does
+@@ -291,6 +289,25 @@ static int bcm2835_spi_transfer_one(struct spi_master *master,
+ return bcm2835_spi_transfer_one_irq(master, spi, tfr, cs);
+ }
+
++static int bcm2835_spi_prepare_message(struct spi_master *master,
++ struct spi_message *msg)
++{
++ struct spi_device *spi = msg->spi;
++ struct bcm2835_spi *bs = spi_master_get_devdata(master);
++ u32 cs = bcm2835_rd(bs, BCM2835_SPI_CS);
++
++ cs &= ~(BCM2835_SPI_CS_CPOL | BCM2835_SPI_CS_CPHA);
++
++ if (spi->mode & SPI_CPOL)
++ cs |= BCM2835_SPI_CS_CPOL;
++ if (spi->mode & SPI_CPHA)
++ cs |= BCM2835_SPI_CS_CPHA;
++
++ bcm2835_wr(bs, BCM2835_SPI_CS, cs);
++
++ return 0;
++}
++
+ static void bcm2835_spi_handle_err(struct spi_master *master,
+ struct spi_message *msg)
+ {
+@@ -429,6 +446,7 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
+ master->set_cs = bcm2835_spi_set_cs;
+ master->transfer_one = bcm2835_spi_transfer_one;
+ master->handle_err = bcm2835_spi_handle_err;
++ master->prepare_message = bcm2835_spi_prepare_message;
+ master->dev.of_node = pdev->dev.of_node;
+
+ bs = spi_master_get_devdata(master);
+diff --git a/drivers/spi/spi-bitbang-txrx.h b/drivers/spi/spi-bitbang-txrx.h
+index 06b34e5bcfa3..47bb9b898dfd 100644
+--- a/drivers/spi/spi-bitbang-txrx.h
++++ b/drivers/spi/spi-bitbang-txrx.h
+@@ -49,7 +49,7 @@ bitbang_txrx_be_cpha0(struct spi_device *spi,
+ {
+ /* if (cpol == 0) this is SPI_MODE_0; else this is SPI_MODE_2 */
+
+- bool oldbit = !(word & 1);
++ u32 oldbit = (!(word & (1<<(bits-1)))) << 31;
+ /* clock starts at inactive polarity */
+ for (word <<= (32 - bits); likely(bits); bits--) {
+
+@@ -81,7 +81,7 @@ bitbang_txrx_be_cpha1(struct spi_device *spi,
+ {
+ /* if (cpol == 0) this is SPI_MODE_1; else this is SPI_MODE_3 */
+
+- bool oldbit = !(word & (1 << 31));
++ u32 oldbit = (!(word & (1<<(bits-1)))) << 31;
+ /* clock starts at inactive polarity */
+ for (word <<= (32 - bits); likely(bits); bits--) {
+
+diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
+index eb03e1215195..7edede6e024b 100644
+--- a/drivers/spi/spi-dw-mmio.c
++++ b/drivers/spi/spi-dw-mmio.c
+@@ -74,6 +74,9 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
+
+ dws->max_freq = clk_get_rate(dwsmmio->clk);
+
++ of_property_read_u32(pdev->dev.of_node, "reg-io-width",
++ &dws->reg_io_width);
++
+ num_cs = 4;
+
+ if (pdev->dev.of_node)
+diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
+index 8d67d03c71eb..4fbfcdc5cb24 100644
+--- a/drivers/spi/spi-dw.c
++++ b/drivers/spi/spi-dw.c
+@@ -194,7 +194,7 @@ static void dw_writer(struct dw_spi *dws)
+ else
+ txw = *(u16 *)(dws->tx);
+ }
+- dw_writel(dws, DW_SPI_DR, txw);
++ dw_write_io_reg(dws, DW_SPI_DR, txw);
+ dws->tx += dws->n_bytes;
+ }
+ }
+@@ -205,7 +205,7 @@ static void dw_reader(struct dw_spi *dws)
+ u16 rxw;
+
+ while (max--) {
+- rxw = dw_readl(dws, DW_SPI_DR);
++ rxw = dw_read_io_reg(dws, DW_SPI_DR);
+ /* Care rx only if the transfer's original "rx" is not null */
+ if (dws->rx_end - dws->len) {
+ if (dws->n_bytes == 1)
+diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h
+index 6c91391c1a4f..b75ed327d5a2 100644
+--- a/drivers/spi/spi-dw.h
++++ b/drivers/spi/spi-dw.h
+@@ -109,6 +109,7 @@ struct dw_spi {
+ u32 fifo_len; /* depth of the FIFO buffer */
+ u32 max_freq; /* max bus freq supported */
+
++ u32 reg_io_width; /* DR I/O width in bytes */
+ u16 bus_num;
+ u16 num_cs; /* supported slave numbers */
+
+@@ -145,11 +146,45 @@ static inline u32 dw_readl(struct dw_spi *dws, u32 offset)
+ return __raw_readl(dws->regs + offset);
+ }
+
++static inline u16 dw_readw(struct dw_spi *dws, u32 offset)
++{
++ return __raw_readw(dws->regs + offset);
++}
++
+ static inline void dw_writel(struct dw_spi *dws, u32 offset, u32 val)
+ {
+ __raw_writel(val, dws->regs + offset);
+ }
+
++static inline void dw_writew(struct dw_spi *dws, u32 offset, u16 val)
++{
++ __raw_writew(val, dws->regs + offset);
++}
++
++static inline u32 dw_read_io_reg(struct dw_spi *dws, u32 offset)
++{
++ switch (dws->reg_io_width) {
++ case 2:
++ return dw_readw(dws, offset);
++ case 4:
++ default:
++ return dw_readl(dws, offset);
++ }
++}
++
++static inline void dw_write_io_reg(struct dw_spi *dws, u32 offset, u32 val)
++{
++ switch (dws->reg_io_width) {
++ case 2:
++ dw_writew(dws, offset, val);
++ break;
++ case 4:
++ default:
++ dw_writel(dws, offset, val);
++ break;
++ }
++}
++
+ static inline void spi_enable_chip(struct dw_spi *dws, int enable)
+ {
+ dw_writel(dws, DW_SPI_SSIENR, (enable ? 1 : 0));
+diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c
+index acce90ac7371..bb916c8d40db 100644
+--- a/drivers/spi/spi-img-spfi.c
++++ b/drivers/spi/spi-img-spfi.c
+@@ -105,6 +105,10 @@ struct img_spfi {
+ bool rx_dma_busy;
+ };
+
++struct img_spfi_device_data {
++ bool gpio_requested;
++};
++
+ static inline u32 spfi_readl(struct img_spfi *spfi, u32 reg)
+ {
+ return readl(spfi->regs + reg);
+@@ -267,15 +271,15 @@ static int img_spfi_start_pio(struct spi_master *master,
+ cpu_relax();
+ }
+
+- ret = spfi_wait_all_done(spfi);
+- if (ret < 0)
+- return ret;
+-
+ if (rx_bytes > 0 || tx_bytes > 0) {
+ dev_err(spfi->dev, "PIO transfer timed out\n");
+ return -ETIMEDOUT;
+ }
+
++ ret = spfi_wait_all_done(spfi);
++ if (ret < 0)
++ return ret;
++
+ return 0;
+ }
+
+@@ -440,21 +444,50 @@ static int img_spfi_unprepare(struct spi_master *master,
+
+ static int img_spfi_setup(struct spi_device *spi)
+ {
+- int ret;
+-
+- ret = gpio_request_one(spi->cs_gpio, (spi->mode & SPI_CS_HIGH) ?
+- GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH,
+- dev_name(&spi->dev));
+- if (ret)
+- dev_err(&spi->dev, "can't request chipselect gpio %d\n",
++ int ret = -EINVAL;
++ struct img_spfi_device_data *spfi_data = spi_get_ctldata(spi);
++
++ if (!spfi_data) {
++ spfi_data = kzalloc(sizeof(*spfi_data), GFP_KERNEL);
++ if (!spfi_data)
++ return -ENOMEM;
++ spfi_data->gpio_requested = false;
++ spi_set_ctldata(spi, spfi_data);
++ }
++ if (!spfi_data->gpio_requested) {
++ ret = gpio_request_one(spi->cs_gpio,
++ (spi->mode & SPI_CS_HIGH) ?
++ GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH,
++ dev_name(&spi->dev));
++ if (ret)
++ dev_err(&spi->dev, "can't request chipselect gpio %d\n",
+ spi->cs_gpio);
+-
++ else
++ spfi_data->gpio_requested = true;
++ } else {
++ if (gpio_is_valid(spi->cs_gpio)) {
++ int mode = ((spi->mode & SPI_CS_HIGH) ?
++ GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH);
++
++ ret = gpio_direction_output(spi->cs_gpio, mode);
++ if (ret)
++ dev_err(&spi->dev, "chipselect gpio %d setup failed (%d)\n",
++ spi->cs_gpio, ret);
++ }
++ }
+ return ret;
+ }
+
+ static void img_spfi_cleanup(struct spi_device *spi)
+ {
+- gpio_free(spi->cs_gpio);
++ struct img_spfi_device_data *spfi_data = spi_get_ctldata(spi);
++
++ if (spfi_data) {
++ if (spfi_data->gpio_requested)
++ gpio_free(spi->cs_gpio);
++ kfree(spfi_data);
++ spi_set_ctldata(spi, NULL);
++ }
+ }
+
+ static void img_spfi_config(struct spi_master *master, struct spi_device *spi,
+diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
+index bcc7c635d8e7..7872f3c78b51 100644
+--- a/drivers/spi/spi-sh-msiof.c
++++ b/drivers/spi/spi-sh-msiof.c
+@@ -48,8 +48,8 @@ struct sh_msiof_spi_priv {
+ const struct sh_msiof_chipdata *chipdata;
+ struct sh_msiof_spi_info *info;
+ struct completion done;
+- int tx_fifo_size;
+- int rx_fifo_size;
++ unsigned int tx_fifo_size;
++ unsigned int rx_fifo_size;
+ void *tx_dma_page;
+ void *rx_dma_page;
+ dma_addr_t tx_dma_addr;
+@@ -95,8 +95,6 @@ struct sh_msiof_spi_priv {
+ #define MDR2_WDLEN1(i) (((i) - 1) << 16) /* Word Count (1-64/256 (SH, A1))) */
+ #define MDR2_GRPMASK1 0x00000001 /* Group Output Mask 1 (SH, A1) */
+
+-#define MAX_WDLEN 256U
+-
+ /* TSCR and RSCR */
+ #define SCR_BRPS_MASK 0x1f00 /* Prescaler Setting (1-32) */
+ #define SCR_BRPS(i) (((i) - 1) << 8)
+@@ -850,7 +848,12 @@ static int sh_msiof_transfer_one(struct spi_master *master,
+ * DMA supports 32-bit words only, hence pack 8-bit and 16-bit
+ * words, with byte resp. word swapping.
+ */
+- unsigned int l = min(len, MAX_WDLEN * 4);
++ unsigned int l = 0;
++
++ if (tx_buf)
++ l = min(len, p->tx_fifo_size * 4);
++ if (rx_buf)
++ l = min(len, p->rx_fifo_size * 4);
+
+ if (bits <= 8) {
+ if (l & 3)
+@@ -963,7 +966,7 @@ static const struct sh_msiof_chipdata sh_data = {
+
+ static const struct sh_msiof_chipdata r8a779x_data = {
+ .tx_fifo_size = 64,
+- .rx_fifo_size = 256,
++ .rx_fifo_size = 64,
+ .master_flags = SPI_MASTER_MUST_TX,
+ };
+
+diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
+index 133f53a9c1d4..a339c1e9997a 100644
+--- a/drivers/spi/spi-xilinx.c
++++ b/drivers/spi/spi-xilinx.c
+@@ -249,19 +249,23 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
+ xspi->tx_ptr = t->tx_buf;
+ xspi->rx_ptr = t->rx_buf;
+ remaining_words = t->len / xspi->bytes_per_word;
+- reinit_completion(&xspi->done);
+
+ if (xspi->irq >= 0 && remaining_words > xspi->buffer_size) {
++ u32 isr;
+ use_irq = true;
+- xspi->write_fn(XSPI_INTR_TX_EMPTY,
+- xspi->regs + XIPIF_V123B_IISR_OFFSET);
+- /* Enable the global IPIF interrupt */
+- xspi->write_fn(XIPIF_V123B_GINTR_ENABLE,
+- xspi->regs + XIPIF_V123B_DGIER_OFFSET);
+ /* Inhibit irq to avoid spurious irqs on tx_empty*/
+ cr = xspi->read_fn(xspi->regs + XSPI_CR_OFFSET);
+ xspi->write_fn(cr | XSPI_CR_TRANS_INHIBIT,
+ xspi->regs + XSPI_CR_OFFSET);
++ /* ACK old irqs (if any) */
++ isr = xspi->read_fn(xspi->regs + XIPIF_V123B_IISR_OFFSET);
++ if (isr)
++ xspi->write_fn(isr,
++ xspi->regs + XIPIF_V123B_IISR_OFFSET);
++ /* Enable the global IPIF interrupt */
++ xspi->write_fn(XIPIF_V123B_GINTR_ENABLE,
++ xspi->regs + XIPIF_V123B_DGIER_OFFSET);
++ reinit_completion(&xspi->done);
+ }
+
+ while (remaining_words) {
+@@ -302,8 +306,10 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
+ remaining_words -= n_words;
+ }
+
+- if (use_irq)
++ if (use_irq) {
+ xspi->write_fn(0, xspi->regs + XIPIF_V123B_DGIER_OFFSET);
++ xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET);
++ }
+
+ return t->len;
+ }
+diff --git a/drivers/staging/comedi/drivers/adl_pci7x3x.c b/drivers/staging/comedi/drivers/adl_pci7x3x.c
+index 934af3ff7897..b0fc027cf485 100644
+--- a/drivers/staging/comedi/drivers/adl_pci7x3x.c
++++ b/drivers/staging/comedi/drivers/adl_pci7x3x.c
+@@ -120,8 +120,20 @@ static int adl_pci7x3x_do_insn_bits(struct comedi_device *dev,
+ {
+ unsigned long reg = (unsigned long)s->private;
+
+- if (comedi_dio_update_state(s, data))
+- outl(s->state, dev->iobase + reg);
++ if (comedi_dio_update_state(s, data)) {
++ unsigned int val = s->state;
++
++ if (s->n_chan == 16) {
++ /*
++ * It seems the PCI-7230 needs the 16-bit DO state
++ * to be shifted left by 16 bits before being written
++ * to the 32-bit register. Set the value in both
++ * halves of the register to be sure.
++ */
++ val |= val << 16;
++ }
++ outl(val, dev->iobase + reg);
++ }
+
+ data[1] = s->state;
+
+diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c b/drivers/staging/comedi/drivers/usbduxsigma.c
+index eaa9add491df..dc0b25a54088 100644
+--- a/drivers/staging/comedi/drivers/usbduxsigma.c
++++ b/drivers/staging/comedi/drivers/usbduxsigma.c
+@@ -550,27 +550,6 @@ static int usbduxsigma_ai_cmdtest(struct comedi_device *dev,
+ if (err)
+ return 3;
+
+- /* Step 4: fix up any arguments */
+-
+- if (high_speed) {
+- /*
+- * every 2 channels get a time window of 125us. Thus, if we
+- * sample all 16 channels we need 1ms. If we sample only one
+- * channel we need only 125us
+- */
+- devpriv->ai_interval = interval;
+- devpriv->ai_timer = cmd->scan_begin_arg / (125000 * interval);
+- } else {
+- /* interval always 1ms */
+- devpriv->ai_interval = 1;
+- devpriv->ai_timer = cmd->scan_begin_arg / 1000000;
+- }
+- if (devpriv->ai_timer < 1)
+- err |= -EINVAL;
+-
+- if (err)
+- return 4;
+-
+ return 0;
+ }
+
+@@ -668,6 +647,22 @@ static int usbduxsigma_ai_cmd(struct comedi_device *dev,
+
+ down(&devpriv->sem);
+
++ if (devpriv->high_speed) {
++ /*
++ * every 2 channels get a time window of 125us. Thus, if we
++ * sample all 16 channels we need 1ms. If we sample only one
++ * channel we need only 125us
++ */
++ unsigned int interval = usbduxsigma_chans_to_interval(len);
++
++ devpriv->ai_interval = interval;
++ devpriv->ai_timer = cmd->scan_begin_arg / (125000 * interval);
++ } else {
++ /* interval always 1ms */
++ devpriv->ai_interval = 1;
++ devpriv->ai_timer = cmd->scan_begin_arg / 1000000;
++ }
++
+ for (i = 0; i < len; i++) {
+ unsigned int chan = CR_CHAN(cmd->chanlist[i]);
+
+@@ -917,25 +912,6 @@ static int usbduxsigma_ao_cmdtest(struct comedi_device *dev,
+ if (err)
+ return 3;
+
+- /* Step 4: fix up any arguments */
+-
+- /* we count in timer steps */
+- if (high_speed) {
+- /* timing of the conversion itself: every 125 us */
+- devpriv->ao_timer = cmd->convert_arg / 125000;
+- } else {
+- /*
+- * timing of the scan: every 1ms
+- * we get all channels at once
+- */
+- devpriv->ao_timer = cmd->scan_begin_arg / 1000000;
+- }
+- if (devpriv->ao_timer < 1)
+- err |= -EINVAL;
+-
+- if (err)
+- return 4;
+-
+ return 0;
+ }
+
+@@ -948,6 +924,20 @@ static int usbduxsigma_ao_cmd(struct comedi_device *dev,
+
+ down(&devpriv->sem);
+
++ if (cmd->convert_src == TRIG_TIMER) {
++ /*
++ * timing of the conversion itself: every 125 us
++ * at high speed (not used yet)
++ */
++ devpriv->ao_timer = cmd->convert_arg / 125000;
++ } else {
++ /*
++ * timing of the scan: every 1ms
++ * we get all channels at once
++ */
++ devpriv->ao_timer = cmd->scan_begin_arg / 1000000;
++ }
++
+ devpriv->ao_counter = devpriv->ao_timer;
+
+ if (cmd->start_src == TRIG_NOW) {
+diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
+index 46bcebba54b2..9373cca121d3 100644
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -2000,6 +2000,12 @@ pci_wch_ch38x_setup(struct serial_private *priv,
+
+ #define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358
+
++#define PCI_VENDOR_ID_PERICOM 0x12D8
++#define PCI_DEVICE_ID_PERICOM_PI7C9X7951 0x7951
++#define PCI_DEVICE_ID_PERICOM_PI7C9X7952 0x7952
++#define PCI_DEVICE_ID_PERICOM_PI7C9X7954 0x7954
++#define PCI_DEVICE_ID_PERICOM_PI7C9X7958 0x7958
++
+ /* Unknown vendors/cards - this should not be in linux/pci_ids.h */
+ #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
+ #define PCI_SUBDEVICE_ID_UNKNOWN_0x1588 0x1588
+@@ -2314,27 +2320,12 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
+ * Pericom
+ */
+ {
+- .vendor = 0x12d8,
+- .device = 0x7952,
+- .subvendor = PCI_ANY_ID,
+- .subdevice = PCI_ANY_ID,
+- .setup = pci_pericom_setup,
+- },
+- {
+- .vendor = 0x12d8,
+- .device = 0x7954,
+- .subvendor = PCI_ANY_ID,
+- .subdevice = PCI_ANY_ID,
+- .setup = pci_pericom_setup,
+- },
+- {
+- .vendor = 0x12d8,
+- .device = 0x7958,
+- .subvendor = PCI_ANY_ID,
+- .subdevice = PCI_ANY_ID,
+- .setup = pci_pericom_setup,
++ .vendor = PCI_VENDOR_ID_PERICOM,
++ .device = PCI_ANY_ID,
++ .subvendor = PCI_ANY_ID,
++ .subdevice = PCI_ANY_ID,
++ .setup = pci_pericom_setup,
+ },
+-
+ /*
+ * PLX
+ */
+@@ -3031,6 +3022,10 @@ enum pci_board_num_t {
+ pbn_fintek_8,
+ pbn_fintek_12,
+ pbn_wch384_4,
++ pbn_pericom_PI7C9X7951,
++ pbn_pericom_PI7C9X7952,
++ pbn_pericom_PI7C9X7954,
++ pbn_pericom_PI7C9X7958,
+ };
+
+ /*
+@@ -3848,7 +3843,6 @@ static struct pciserial_board pci_boards[] = {
+ .base_baud = 115200,
+ .first_offset = 0x40,
+ },
+-
+ [pbn_wch384_4] = {
+ .flags = FL_BASE0,
+ .num_ports = 4,
+@@ -3856,6 +3850,33 @@ static struct pciserial_board pci_boards[] = {
+ .uart_offset = 8,
+ .first_offset = 0xC0,
+ },
++ /*
++ * Pericom PI7C9X795[1248] Uno/Dual/Quad/Octal UART
++ */
++ [pbn_pericom_PI7C9X7951] = {
++ .flags = FL_BASE0,
++ .num_ports = 1,
++ .base_baud = 921600,
++ .uart_offset = 0x8,
++ },
++ [pbn_pericom_PI7C9X7952] = {
++ .flags = FL_BASE0,
++ .num_ports = 2,
++ .base_baud = 921600,
++ .uart_offset = 0x8,
++ },
++ [pbn_pericom_PI7C9X7954] = {
++ .flags = FL_BASE0,
++ .num_ports = 4,
++ .base_baud = 921600,
++ .uart_offset = 0x8,
++ },
++ [pbn_pericom_PI7C9X7958] = {
++ .flags = FL_BASE0,
++ .num_ports = 8,
++ .base_baud = 921600,
++ .uart_offset = 0x8,
++ },
+ };
+
+ static const struct pci_device_id blacklist[] = {
+@@ -5117,6 +5138,25 @@ static struct pci_device_id serial_pci_tbl[] = {
+ 0,
+ 0, pbn_exar_XR17V8358 },
+ /*
++ * Pericom PI7C9X795[1248] Uno/Dual/Quad/Octal UART
++ */
++ { PCI_VENDOR_ID_PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7951,
++ PCI_ANY_ID, PCI_ANY_ID,
++ 0,
++ 0, pbn_pericom_PI7C9X7951 },
++ { PCI_VENDOR_ID_PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7952,
++ PCI_ANY_ID, PCI_ANY_ID,
++ 0,
++ 0, pbn_pericom_PI7C9X7952 },
++ { PCI_VENDOR_ID_PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7954,
++ PCI_ANY_ID, PCI_ANY_ID,
++ 0,
++ 0, pbn_pericom_PI7C9X7954 },
++ { PCI_VENDOR_ID_PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7958,
++ PCI_ANY_ID, PCI_ANY_ID,
++ 0,
++ 0, pbn_pericom_PI7C9X7958 },
++ /*
+ * Topic TP560 Data/Fax/Voice 56k modem (reported by Evan Clarke)
+ */
+ { PCI_VENDOR_ID_TOPIC, PCI_DEVICE_ID_TOPIC_TP560,
+diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
+index 50a09cd76d50..658b392d1170 100644
+--- a/drivers/tty/serial/8250/8250_pnp.c
++++ b/drivers/tty/serial/8250/8250_pnp.c
+@@ -41,6 +41,12 @@ static const struct pnp_device_id pnp_dev_table[] = {
+ { "AEI1240", 0 },
+ /* Rockwell 56K ACF II Fax+Data+Voice Modem */
+ { "AKY1021", 0 /*SPCI_FL_NO_SHIRQ*/ },
++ /*
++ * ALi Fast Infrared Controller
++ * Native driver (ali-ircc) is broken so at least
++ * it can be used with irtty-sir.
++ */
++ { "ALI5123", 0 },
+ /* AZT3005 PnP SOUND DEVICE */
+ { "AZT4001", 0 },
+ /* Best Data Products Inc. Smart One 336F PnP Modem */
+@@ -364,6 +370,11 @@ static const struct pnp_device_id pnp_dev_table[] = {
+ /* Winbond CIR port, should not be probed. We should keep track
+ of it to prevent the legacy serial driver from probing it */
+ { "WEC1022", CIR_PORT },
++ /*
++ * SMSC IrCC SIR/FIR port, should not be probed by serial driver
++ * as well so its own driver can bind to it.
++ */
++ { "SMCF010", CIR_PORT },
+ { "", 0 }
+ };
+
+diff --git a/drivers/tty/serial/men_z135_uart.c b/drivers/tty/serial/men_z135_uart.c
+index 35c55505b3eb..5a41b8fbb10a 100644
+--- a/drivers/tty/serial/men_z135_uart.c
++++ b/drivers/tty/serial/men_z135_uart.c
+@@ -392,7 +392,6 @@ static irqreturn_t men_z135_intr(int irq, void *data)
+ struct men_z135_port *uart = (struct men_z135_port *)data;
+ struct uart_port *port = &uart->port;
+ bool handled = false;
+- unsigned long flags;
+ int irq_id;
+
+ uart->stat_reg = ioread32(port->membase + MEN_Z135_STAT_REG);
+@@ -401,7 +400,7 @@ static irqreturn_t men_z135_intr(int irq, void *data)
+ if (!irq_id)
+ goto out;
+
+- spin_lock_irqsave(&port->lock, flags);
++ spin_lock(&port->lock);
+ /* It's save to write to IIR[7:6] RXC[9:8] */
+ iowrite8(irq_id, port->membase + MEN_Z135_STAT_REG);
+
+@@ -427,7 +426,7 @@ static irqreturn_t men_z135_intr(int irq, void *data)
+ handled = true;
+ }
+
+- spin_unlock_irqrestore(&port->lock, flags);
++ spin_unlock(&port->lock);
+ out:
+ return IRQ_RETVAL(handled);
+ }
+@@ -717,7 +716,7 @@ static void men_z135_set_termios(struct uart_port *port,
+
+ baud = uart_get_baud_rate(port, termios, old, 0, uart_freq / 16);
+
+- spin_lock(&port->lock);
++ spin_lock_irq(&port->lock);
+ if (tty_termios_baud_rate(termios))
+ tty_termios_encode_baud_rate(termios, baud, baud);
+
+@@ -725,7 +724,7 @@ static void men_z135_set_termios(struct uart_port *port,
+ iowrite32(bd_reg, port->membase + MEN_Z135_BAUD_REG);
+
+ uart_update_timeout(port, termios->c_cflag, baud);
+- spin_unlock(&port->lock);
++ spin_unlock_irq(&port->lock);
+ }
+
+ static const char *men_z135_type(struct uart_port *port)
+diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
+index a0ae942d9562..1e0d9b8c48c9 100644
+--- a/drivers/tty/serial/samsung.c
++++ b/drivers/tty/serial/samsung.c
+@@ -295,15 +295,6 @@ static int s3c24xx_serial_start_tx_dma(struct s3c24xx_uart_port *ourport,
+ if (ourport->tx_mode != S3C24XX_TX_DMA)
+ enable_tx_dma(ourport);
+
+- while (xmit->tail & (dma_get_cache_alignment() - 1)) {
+- if (rd_regl(port, S3C2410_UFSTAT) & ourport->info->tx_fifofull)
+- return 0;
+- wr_regb(port, S3C2410_UTXH, xmit->buf[xmit->tail]);
+- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+- port->icount.tx++;
+- count--;
+- }
+-
+ dma->tx_size = count & ~(dma_get_cache_alignment() - 1);
+ dma->tx_transfer_addr = dma->tx_addr + xmit->tail;
+
+@@ -342,7 +333,9 @@ static void s3c24xx_serial_start_next_tx(struct s3c24xx_uart_port *ourport)
+ return;
+ }
+
+- if (!ourport->dma || !ourport->dma->tx_chan || count < port->fifosize)
++ if (!ourport->dma || !ourport->dma->tx_chan ||
++ count < ourport->min_dma_size ||
++ xmit->tail & (dma_get_cache_alignment() - 1))
+ s3c24xx_serial_start_tx_pio(ourport);
+ else
+ s3c24xx_serial_start_tx_dma(ourport, count);
+@@ -736,15 +729,20 @@ static irqreturn_t s3c24xx_serial_tx_chars(int irq, void *id)
+ struct uart_port *port = &ourport->port;
+ struct circ_buf *xmit = &port->state->xmit;
+ unsigned long flags;
+- int count;
++ int count, dma_count = 0;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
+
+- if (ourport->dma && ourport->dma->tx_chan && count >= port->fifosize) {
+- s3c24xx_serial_start_tx_dma(ourport, count);
+- goto out;
++ if (ourport->dma && ourport->dma->tx_chan &&
++ count >= ourport->min_dma_size) {
++ int align = dma_get_cache_alignment() -
++ (xmit->tail & (dma_get_cache_alignment() - 1));
++ if (count-align >= ourport->min_dma_size) {
++ dma_count = count-align;
++ count = align;
++ }
+ }
+
+ if (port->x_char) {
+@@ -765,14 +763,24 @@ static irqreturn_t s3c24xx_serial_tx_chars(int irq, void *id)
+
+ /* try and drain the buffer... */
+
+- count = port->fifosize;
+- while (!uart_circ_empty(xmit) && count-- > 0) {
++ if (count > port->fifosize) {
++ count = port->fifosize;
++ dma_count = 0;
++ }
++
++ while (!uart_circ_empty(xmit) && count > 0) {
+ if (rd_regl(port, S3C2410_UFSTAT) & ourport->info->tx_fifofull)
+ break;
+
+ wr_regb(port, S3C2410_UTXH, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
++ count--;
++ }
++
++ if (!count && dma_count) {
++ s3c24xx_serial_start_tx_dma(ourport, dma_count);
++ goto out;
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) {
+@@ -1838,6 +1846,13 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
+ else if (ourport->info->fifosize)
+ ourport->port.fifosize = ourport->info->fifosize;
+
++ /*
++ * DMA transfers must be aligned at least to cache line size,
++ * so find minimal transfer size suitable for DMA mode
++ */
++ ourport->min_dma_size = max_t(int, ourport->port.fifosize,
++ dma_get_cache_alignment());
++
+ probe_index++;
+
+ dbg("%s: initialising port %p...\n", __func__, ourport);
+diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h
+index d275032aa68d..fc5deaa4f382 100644
+--- a/drivers/tty/serial/samsung.h
++++ b/drivers/tty/serial/samsung.h
+@@ -82,6 +82,7 @@ struct s3c24xx_uart_port {
+ unsigned char tx_claimed;
+ unsigned int pm_level;
+ unsigned long baudclk_rate;
++ unsigned int min_dma_size;
+
+ unsigned int rx_irq;
+ unsigned int tx_irq;
+diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
+index 69e769c35cf5..06ecd1e6871c 100644
+--- a/drivers/usb/dwc3/ep0.c
++++ b/drivers/usb/dwc3/ep0.c
+@@ -820,6 +820,11 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
+ unsigned maxp = ep0->endpoint.maxpacket;
+
+ transfer_size += (maxp - (transfer_size % maxp));
++
++ /* Maximum of DWC3_EP0_BOUNCE_SIZE can only be received */
++ if (transfer_size > DWC3_EP0_BOUNCE_SIZE)
++ transfer_size = DWC3_EP0_BOUNCE_SIZE;
++
+ transferred = min_t(u32, ur->length,
+ transfer_size - length);
+ memcpy(ur->buf, dwc->ep0_bounce, transferred);
+@@ -941,11 +946,14 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
+ return;
+ }
+
+- WARN_ON(req->request.length > DWC3_EP0_BOUNCE_SIZE);
+-
+ maxpacket = dep->endpoint.maxpacket;
+ transfer_size = roundup(req->request.length, maxpacket);
+
++ if (transfer_size > DWC3_EP0_BOUNCE_SIZE) {
++ dev_WARN(dwc->dev, "bounce buf can't handle req len\n");
++ transfer_size = DWC3_EP0_BOUNCE_SIZE;
++ }
++
+ dwc->ep0_bounced = true;
+
+ /*
+diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
+index 531861547253..96d935b00504 100644
+--- a/drivers/usb/gadget/function/f_uac2.c
++++ b/drivers/usb/gadget/function/f_uac2.c
+@@ -975,6 +975,29 @@ free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep)
+ "%s:%d Error!\n", __func__, __LINE__);
+ }
+
++static void set_ep_max_packet_size(const struct f_uac2_opts *uac2_opts,
++ struct usb_endpoint_descriptor *ep_desc,
++ unsigned int factor, bool is_playback)
++{
++ int chmask, srate, ssize;
++ u16 max_packet_size;
++
++ if (is_playback) {
++ chmask = uac2_opts->p_chmask;
++ srate = uac2_opts->p_srate;
++ ssize = uac2_opts->p_ssize;
++ } else {
++ chmask = uac2_opts->c_chmask;
++ srate = uac2_opts->c_srate;
++ ssize = uac2_opts->c_ssize;
++ }
++
++ max_packet_size = num_channels(chmask) * ssize *
++ DIV_ROUND_UP(srate, factor / (1 << (ep_desc->bInterval - 1)));
++ ep_desc->wMaxPacketSize = cpu_to_le16(min(max_packet_size,
++ le16_to_cpu(ep_desc->wMaxPacketSize)));
++}
++
+ static int
+ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
+ {
+@@ -1070,10 +1093,14 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
+ uac2->p_prm.uac2 = uac2;
+ uac2->c_prm.uac2 = uac2;
+
++ /* Calculate wMaxPacketSize according to audio bandwidth */
++ set_ep_max_packet_size(uac2_opts, &fs_epin_desc, 1000, true);
++ set_ep_max_packet_size(uac2_opts, &fs_epout_desc, 1000, false);
++ set_ep_max_packet_size(uac2_opts, &hs_epin_desc, 8000, true);
++ set_ep_max_packet_size(uac2_opts, &hs_epout_desc, 8000, false);
++
+ hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress;
+- hs_epout_desc.wMaxPacketSize = fs_epout_desc.wMaxPacketSize;
+ hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress;
+- hs_epin_desc.wMaxPacketSize = fs_epin_desc.wMaxPacketSize;
+
+ ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, NULL);
+ if (ret)
+diff --git a/drivers/usb/gadget/udc/m66592-udc.c b/drivers/usb/gadget/udc/m66592-udc.c
+index 309706fe4bf0..9704053dfe05 100644
+--- a/drivers/usb/gadget/udc/m66592-udc.c
++++ b/drivers/usb/gadget/udc/m66592-udc.c
+@@ -1052,7 +1052,7 @@ static void set_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
+ tmp = m66592_read(m66592, M66592_INTSTS0) &
+ M66592_CTSQ;
+ udelay(1);
+- } while (tmp != M66592_CS_IDST || timeout-- > 0);
++ } while (tmp != M66592_CS_IDST && timeout-- > 0);
+
+ if (tmp == M66592_CS_IDST)
+ m66592_bset(m66592,
+diff --git a/drivers/usb/host/ehci-sysfs.c b/drivers/usb/host/ehci-sysfs.c
+index 5e44407aa099..5216f2b09d63 100644
+--- a/drivers/usb/host/ehci-sysfs.c
++++ b/drivers/usb/host/ehci-sysfs.c
+@@ -29,7 +29,7 @@ static ssize_t show_companion(struct device *dev,
+ int count = PAGE_SIZE;
+ char *ptr = buf;
+
+- ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
++ ehci = hcd_to_ehci(dev_get_drvdata(dev));
+ nports = HCS_N_PORTS(ehci->hcs_params);
+
+ for (index = 0; index < nports; ++index) {
+@@ -54,7 +54,7 @@ static ssize_t store_companion(struct device *dev,
+ struct ehci_hcd *ehci;
+ int portnum, new_owner;
+
+- ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
++ ehci = hcd_to_ehci(dev_get_drvdata(dev));
+ new_owner = PORT_OWNER; /* Owned by companion */
+ if (sscanf(buf, "%d", &portnum) != 1)
+ return -EINVAL;
+@@ -85,7 +85,7 @@ static ssize_t show_uframe_periodic_max(struct device *dev,
+ struct ehci_hcd *ehci;
+ int n;
+
+- ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
++ ehci = hcd_to_ehci(dev_get_drvdata(dev));
+ n = scnprintf(buf, PAGE_SIZE, "%d\n", ehci->uframe_periodic_max);
+ return n;
+ }
+@@ -101,7 +101,7 @@ static ssize_t store_uframe_periodic_max(struct device *dev,
+ unsigned long flags;
+ ssize_t ret;
+
+- ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
++ ehci = hcd_to_ehci(dev_get_drvdata(dev));
+ if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
+ return -EINVAL;
+
+diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
+index 4c8b3b82103d..a5a0376bbd48 100644
+--- a/drivers/usb/serial/ftdi_sio.c
++++ b/drivers/usb/serial/ftdi_sio.c
+@@ -605,6 +605,10 @@ static const struct usb_device_id id_table_combined[] = {
+ { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLXM_PID),
+ .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+ { USB_DEVICE(FTDI_VID, FTDI_SYNAPSE_SS200_PID) },
++ { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX_PID) },
++ { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX2_PID) },
++ { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX2WI_PID) },
++ { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX3_PID) },
+ /*
+ * ELV devices:
+ */
+diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
+index 792e054126de..2943b97b2a83 100644
+--- a/drivers/usb/serial/ftdi_sio_ids.h
++++ b/drivers/usb/serial/ftdi_sio_ids.h
+@@ -568,6 +568,14 @@
+ */
+ #define FTDI_SYNAPSE_SS200_PID 0x9090 /* SS200 - SNAP Stick 200 */
+
++/*
++ * CustomWare / ShipModul NMEA multiplexers product ids (FTDI_VID)
++ */
++#define FTDI_CUSTOMWARE_MINIPLEX_PID 0xfd48 /* MiniPlex first generation NMEA Multiplexer */
++#define FTDI_CUSTOMWARE_MINIPLEX2_PID 0xfd49 /* MiniPlex-USB and MiniPlex-2 series */
++#define FTDI_CUSTOMWARE_MINIPLEX2WI_PID 0xfd4a /* MiniPlex-2Wi */
++#define FTDI_CUSTOMWARE_MINIPLEX3_PID 0xfd4b /* MiniPlex-3 series */
++
+
+ /********************************/
+ /** third-party VID/PID combos **/
+diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
+index f5257af33ecf..ae682e4eeaef 100644
+--- a/drivers/usb/serial/pl2303.c
++++ b/drivers/usb/serial/pl2303.c
+@@ -362,21 +362,38 @@ static speed_t pl2303_encode_baud_rate_direct(unsigned char buf[4],
+ static speed_t pl2303_encode_baud_rate_divisor(unsigned char buf[4],
+ speed_t baud)
+ {
+- unsigned int tmp;
++ unsigned int baseline, mantissa, exponent;
+
+ /*
+ * Apparently the formula is:
+- * baudrate = 12M * 32 / (2^buf[1]) / buf[0]
++ * baudrate = 12M * 32 / (mantissa * 4^exponent)
++ * where
++ * mantissa = buf[8:0]
++ * exponent = buf[11:9]
+ */
+- tmp = 12000000 * 32 / baud;
++ baseline = 12000000 * 32;
++ mantissa = baseline / baud;
++ if (mantissa == 0)
++ mantissa = 1; /* Avoid dividing by zero if baud > 32*12M. */
++ exponent = 0;
++ while (mantissa >= 512) {
++ if (exponent < 7) {
++ mantissa >>= 2; /* divide by 4 */
++ exponent++;
++ } else {
++ /* Exponent is maxed. Trim mantissa and leave. */
++ mantissa = 511;
++ break;
++ }
++ }
++
+ buf[3] = 0x80;
+ buf[2] = 0;
+- buf[1] = (tmp >= 256);
+- while (tmp >= 256) {
+- tmp >>= 2;
+- buf[1] <<= 1;
+- }
+- buf[0] = tmp;
++ buf[1] = exponent << 1 | mantissa >> 8;
++ buf[0] = mantissa & 0xff;
++
++ /* Calculate and return the exact baud rate. */
++ baud = (baseline / mantissa) >> (exponent << 1);
+
+ return baud;
+ }
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index d156545728c2..ebcec8cda858 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -139,6 +139,7 @@ static const struct usb_device_id id_table[] = {
+ {USB_DEVICE(0x0AF0, 0x8120)}, /* Option GTM681W */
+
+ /* non-Gobi Sierra Wireless devices */
++ {DEVICE_SWI(0x03f0, 0x4e1d)}, /* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
+ {DEVICE_SWI(0x0f3d, 0x68a2)}, /* Sierra Wireless MC7700 */
+ {DEVICE_SWI(0x114f, 0x68a2)}, /* Sierra Wireless MC7750 */
+ {DEVICE_SWI(0x1199, 0x68a2)}, /* Sierra Wireless MC7710 */
+diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
+index 8fceec7298e0..6ed804450a5a 100644
+--- a/drivers/usb/serial/symbolserial.c
++++ b/drivers/usb/serial/symbolserial.c
+@@ -94,7 +94,7 @@ exit:
+
+ static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port)
+ {
+- struct symbol_private *priv = usb_get_serial_data(port->serial);
++ struct symbol_private *priv = usb_get_serial_port_data(port);
+ unsigned long flags;
+ int result = 0;
+
+@@ -120,7 +120,7 @@ static void symbol_close(struct usb_serial_port *port)
+ static void symbol_throttle(struct tty_struct *tty)
+ {
+ struct usb_serial_port *port = tty->driver_data;
+- struct symbol_private *priv = usb_get_serial_data(port->serial);
++ struct symbol_private *priv = usb_get_serial_port_data(port);
+
+ spin_lock_irq(&priv->lock);
+ priv->throttled = true;
+@@ -130,7 +130,7 @@ static void symbol_throttle(struct tty_struct *tty)
+ static void symbol_unthrottle(struct tty_struct *tty)
+ {
+ struct usb_serial_port *port = tty->driver_data;
+- struct symbol_private *priv = usb_get_serial_data(port->serial);
++ struct symbol_private *priv = usb_get_serial_port_data(port);
+ int result;
+ bool was_throttled;
+
+diff --git a/fs/ceph/super.c b/fs/ceph/super.c
+index 4e9905374078..0d47422e3548 100644
+--- a/fs/ceph/super.c
++++ b/fs/ceph/super.c
+@@ -466,7 +466,7 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
+ if (fsopt->max_readdir_bytes != CEPH_MAX_READDIR_BYTES_DEFAULT)
+ seq_printf(m, ",readdir_max_bytes=%d", fsopt->max_readdir_bytes);
+ if (strcmp(fsopt->snapdir_name, CEPH_SNAPDIRNAME_DEFAULT))
+- seq_printf(m, ",snapdirname=%s", fsopt->snapdir_name);
++ seq_show_option(m, "snapdirname", fsopt->snapdir_name);
+
+ return 0;
+ }
+diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
+index 0a9fb6b53126..6a1119e87fbb 100644
+--- a/fs/cifs/cifsfs.c
++++ b/fs/cifs/cifsfs.c
+@@ -394,17 +394,17 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
+ struct sockaddr *srcaddr;
+ srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr;
+
+- seq_printf(s, ",vers=%s", tcon->ses->server->vals->version_string);
++ seq_show_option(s, "vers", tcon->ses->server->vals->version_string);
+ cifs_show_security(s, tcon->ses);
+ cifs_show_cache_flavor(s, cifs_sb);
+
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)
+ seq_puts(s, ",multiuser");
+ else if (tcon->ses->user_name)
+- seq_printf(s, ",username=%s", tcon->ses->user_name);
++ seq_show_option(s, "username", tcon->ses->user_name);
+
+ if (tcon->ses->domainName)
+- seq_printf(s, ",domain=%s", tcon->ses->domainName);
++ seq_show_option(s, "domain", tcon->ses->domainName);
+
+ if (srcaddr->sa_family != AF_UNSPEC) {
+ struct sockaddr_in *saddr4;
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index ca12affdba96..6b4eb94b04a5 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -1738,10 +1738,10 @@ static inline void ext4_show_quota_options(struct seq_file *seq,
+ }
+
+ if (sbi->s_qf_names[USRQUOTA])
+- seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
++ seq_show_option(seq, "usrjquota", sbi->s_qf_names[USRQUOTA]);
+
+ if (sbi->s_qf_names[GRPQUOTA])
+- seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
++ seq_show_option(seq, "grpjquota", sbi->s_qf_names[GRPQUOTA]);
+ #endif
+ }
+
+diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
+index 859c6edbf81a..c18b49dc5d4f 100644
+--- a/fs/gfs2/super.c
++++ b/fs/gfs2/super.c
+@@ -1334,11 +1334,11 @@ static int gfs2_show_options(struct seq_file *s, struct dentry *root)
+ if (is_ancestor(root, sdp->sd_master_dir))
+ seq_puts(s, ",meta");
+ if (args->ar_lockproto[0])
+- seq_printf(s, ",lockproto=%s", args->ar_lockproto);
++ seq_show_option(s, "lockproto", args->ar_lockproto);
+ if (args->ar_locktable[0])
+- seq_printf(s, ",locktable=%s", args->ar_locktable);
++ seq_show_option(s, "locktable", args->ar_locktable);
+ if (args->ar_hostdata[0])
+- seq_printf(s, ",hostdata=%s", args->ar_hostdata);
++ seq_show_option(s, "hostdata", args->ar_hostdata);
+ if (args->ar_spectator)
+ seq_puts(s, ",spectator");
+ if (args->ar_localflocks)
+diff --git a/fs/hfs/super.c b/fs/hfs/super.c
+index eee7206c38d1..410b65eea683 100644
+--- a/fs/hfs/super.c
++++ b/fs/hfs/super.c
+@@ -135,9 +135,9 @@ static int hfs_show_options(struct seq_file *seq, struct dentry *root)
+ struct hfs_sb_info *sbi = HFS_SB(root->d_sb);
+
+ if (sbi->s_creator != cpu_to_be32(0x3f3f3f3f))
+- seq_printf(seq, ",creator=%.4s", (char *)&sbi->s_creator);
++ seq_show_option_n(seq, "creator", (char *)&sbi->s_creator, 4);
+ if (sbi->s_type != cpu_to_be32(0x3f3f3f3f))
+- seq_printf(seq, ",type=%.4s", (char *)&sbi->s_type);
++ seq_show_option_n(seq, "type", (char *)&sbi->s_type, 4);
+ seq_printf(seq, ",uid=%u,gid=%u",
+ from_kuid_munged(&init_user_ns, sbi->s_uid),
+ from_kgid_munged(&init_user_ns, sbi->s_gid));
+diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
+index c90b72ee676d..bb806e58c977 100644
+--- a/fs/hfsplus/options.c
++++ b/fs/hfsplus/options.c
+@@ -218,9 +218,9 @@ int hfsplus_show_options(struct seq_file *seq, struct dentry *root)
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(root->d_sb);
+
+ if (sbi->creator != HFSPLUS_DEF_CR_TYPE)
+- seq_printf(seq, ",creator=%.4s", (char *)&sbi->creator);
++ seq_show_option_n(seq, "creator", (char *)&sbi->creator, 4);
+ if (sbi->type != HFSPLUS_DEF_CR_TYPE)
+- seq_printf(seq, ",type=%.4s", (char *)&sbi->type);
++ seq_show_option_n(seq, "type", (char *)&sbi->type, 4);
+ seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask,
+ from_kuid_munged(&init_user_ns, sbi->uid),
+ from_kgid_munged(&init_user_ns, sbi->gid));
+diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
+index 07d8d8f52faf..de2d6245e9fa 100644
+--- a/fs/hostfs/hostfs_kern.c
++++ b/fs/hostfs/hostfs_kern.c
+@@ -260,7 +260,7 @@ static int hostfs_show_options(struct seq_file *seq, struct dentry *root)
+ size_t offset = strlen(root_ino) + 1;
+
+ if (strlen(root_path) > offset)
+- seq_printf(seq, ",%s", root_path + offset);
++ seq_show_option(seq, root_path + offset, NULL);
+
+ if (append)
+ seq_puts(seq, ",append");
+diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
+index a0872f239f04..9e92c9c2d319 100644
+--- a/fs/hpfs/namei.c
++++ b/fs/hpfs/namei.c
+@@ -8,6 +8,17 @@
+ #include <linux/sched.h>
+ #include "hpfs_fn.h"
+
++static void hpfs_update_directory_times(struct inode *dir)
++{
++ time_t t = get_seconds();
++ if (t == dir->i_mtime.tv_sec &&
++ t == dir->i_ctime.tv_sec)
++ return;
++ dir->i_mtime.tv_sec = dir->i_ctime.tv_sec = t;
++ dir->i_mtime.tv_nsec = dir->i_ctime.tv_nsec = 0;
++ hpfs_write_inode_nolock(dir);
++}
++
+ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+ {
+ const unsigned char *name = dentry->d_name.name;
+@@ -99,6 +110,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+ result->i_mode = mode | S_IFDIR;
+ hpfs_write_inode_nolock(result);
+ }
++ hpfs_update_directory_times(dir);
+ d_instantiate(dentry, result);
+ hpfs_unlock(dir->i_sb);
+ return 0;
+@@ -187,6 +199,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, b
+ result->i_mode = mode | S_IFREG;
+ hpfs_write_inode_nolock(result);
+ }
++ hpfs_update_directory_times(dir);
+ d_instantiate(dentry, result);
+ hpfs_unlock(dir->i_sb);
+ return 0;
+@@ -262,6 +275,7 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, de
+ insert_inode_hash(result);
+
+ hpfs_write_inode_nolock(result);
++ hpfs_update_directory_times(dir);
+ d_instantiate(dentry, result);
+ brelse(bh);
+ hpfs_unlock(dir->i_sb);
+@@ -340,6 +354,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
+ insert_inode_hash(result);
+
+ hpfs_write_inode_nolock(result);
++ hpfs_update_directory_times(dir);
+ d_instantiate(dentry, result);
+ hpfs_unlock(dir->i_sb);
+ return 0;
+@@ -423,6 +438,8 @@ again:
+ out1:
+ hpfs_brelse4(&qbh);
+ out:
++ if (!err)
++ hpfs_update_directory_times(dir);
+ hpfs_unlock(dir->i_sb);
+ return err;
+ }
+@@ -477,6 +494,8 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
+ out1:
+ hpfs_brelse4(&qbh);
+ out:
++ if (!err)
++ hpfs_update_directory_times(dir);
+ hpfs_unlock(dir->i_sb);
+ return err;
+ }
+@@ -595,7 +614,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
+ goto end1;
+ }
+
+- end:
++end:
+ hpfs_i(i)->i_parent_dir = new_dir->i_ino;
+ if (S_ISDIR(i->i_mode)) {
+ inc_nlink(new_dir);
+@@ -610,6 +629,10 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
+ brelse(bh);
+ }
+ end1:
++ if (!err) {
++ hpfs_update_directory_times(old_dir);
++ hpfs_update_directory_times(new_dir);
++ }
+ hpfs_unlock(i->i_sb);
+ return err;
+ }
+diff --git a/fs/libfs.c b/fs/libfs.c
+index 02813592e121..f4641fd27bda 100644
+--- a/fs/libfs.c
++++ b/fs/libfs.c
+@@ -1176,7 +1176,7 @@ void make_empty_dir_inode(struct inode *inode)
+ inode->i_uid = GLOBAL_ROOT_UID;
+ inode->i_gid = GLOBAL_ROOT_GID;
+ inode->i_rdev = 0;
+- inode->i_size = 2;
++ inode->i_size = 0;
+ inode->i_blkbits = PAGE_SHIFT;
+ inode->i_blocks = 0;
+
+diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
+index 403c5660b306..a482e312c7b2 100644
+--- a/fs/ocfs2/super.c
++++ b/fs/ocfs2/super.c
+@@ -1550,8 +1550,8 @@ static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
+ seq_printf(s, ",localflocks,");
+
+ if (osb->osb_cluster_stack[0])
+- seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN,
+- osb->osb_cluster_stack);
++ seq_show_option_n(s, "cluster_stack", osb->osb_cluster_stack,
++ OCFS2_STACK_LABEL_LEN);
+ if (opts & OCFS2_MOUNT_USRQUOTA)
+ seq_printf(s, ",usrquota");
+ if (opts & OCFS2_MOUNT_GRPQUOTA)
+diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
+index bf8537c7f455..155989455a72 100644
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -517,10 +517,10 @@ static int ovl_show_options(struct seq_file *m, struct dentry *dentry)
+ struct super_block *sb = dentry->d_sb;
+ struct ovl_fs *ufs = sb->s_fs_info;
+
+- seq_printf(m, ",lowerdir=%s", ufs->config.lowerdir);
++ seq_show_option(m, "lowerdir", ufs->config.lowerdir);
+ if (ufs->config.upperdir) {
+- seq_printf(m, ",upperdir=%s", ufs->config.upperdir);
+- seq_printf(m, ",workdir=%s", ufs->config.workdir);
++ seq_show_option(m, "upperdir", ufs->config.upperdir);
++ seq_show_option(m, "workdir", ufs->config.workdir);
+ }
+ return 0;
+ }
+diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
+index 0111ad0466ed..cf6fa25f884b 100644
+--- a/fs/reiserfs/super.c
++++ b/fs/reiserfs/super.c
+@@ -714,18 +714,20 @@ static int reiserfs_show_options(struct seq_file *seq, struct dentry *root)
+ seq_puts(seq, ",acl");
+
+ if (REISERFS_SB(s)->s_jdev)
+- seq_printf(seq, ",jdev=%s", REISERFS_SB(s)->s_jdev);
++ seq_show_option(seq, "jdev", REISERFS_SB(s)->s_jdev);
+
+ if (journal->j_max_commit_age != journal->j_default_max_commit_age)
+ seq_printf(seq, ",commit=%d", journal->j_max_commit_age);
+
+ #ifdef CONFIG_QUOTA
+ if (REISERFS_SB(s)->s_qf_names[USRQUOTA])
+- seq_printf(seq, ",usrjquota=%s", REISERFS_SB(s)->s_qf_names[USRQUOTA]);
++ seq_show_option(seq, "usrjquota",
++ REISERFS_SB(s)->s_qf_names[USRQUOTA]);
+ else if (opts & (1 << REISERFS_USRQUOTA))
+ seq_puts(seq, ",usrquota");
+ if (REISERFS_SB(s)->s_qf_names[GRPQUOTA])
+- seq_printf(seq, ",grpjquota=%s", REISERFS_SB(s)->s_qf_names[GRPQUOTA]);
++ seq_show_option(seq, "grpjquota",
++ REISERFS_SB(s)->s_qf_names[GRPQUOTA]);
+ else if (opts & (1 << REISERFS_GRPQUOTA))
+ seq_puts(seq, ",grpquota");
+ if (REISERFS_SB(s)->s_jquota_fmt) {
+diff --git a/fs/xfs/libxfs/xfs_da_format.h b/fs/xfs/libxfs/xfs_da_format.h
+index 74bcbabfa523..b14bbd6bb05f 100644
+--- a/fs/xfs/libxfs/xfs_da_format.h
++++ b/fs/xfs/libxfs/xfs_da_format.h
+@@ -680,8 +680,15 @@ typedef struct xfs_attr_leaf_name_remote {
+ typedef struct xfs_attr_leafblock {
+ xfs_attr_leaf_hdr_t hdr; /* constant-structure header block */
+ xfs_attr_leaf_entry_t entries[1]; /* sorted on key, not name */
+- xfs_attr_leaf_name_local_t namelist; /* grows from bottom of buf */
+- xfs_attr_leaf_name_remote_t valuelist; /* grows from bottom of buf */
++ /*
++ * The rest of the block contains the following structures after the
++ * leaf entries, growing from the bottom up. The variables are never
++ * referenced and definining them can actually make gcc optimize away
++ * accesses to the 'entries' array above index 0 so don't do that.
++ *
++ * xfs_attr_leaf_name_local_t namelist;
++ * xfs_attr_leaf_name_remote_t valuelist;
++ */
+ } xfs_attr_leafblock_t;
+
+ /*
+diff --git a/fs/xfs/libxfs/xfs_dir2_data.c b/fs/xfs/libxfs/xfs_dir2_data.c
+index de1ea16f5748..534bbf283d6b 100644
+--- a/fs/xfs/libxfs/xfs_dir2_data.c
++++ b/fs/xfs/libxfs/xfs_dir2_data.c
+@@ -252,7 +252,8 @@ xfs_dir3_data_reada_verify(
+ return;
+ case cpu_to_be32(XFS_DIR2_DATA_MAGIC):
+ case cpu_to_be32(XFS_DIR3_DATA_MAGIC):
+- xfs_dir3_data_verify(bp);
++ bp->b_ops = &xfs_dir3_data_buf_ops;
++ bp->b_ops->verify_read(bp);
+ return;
+ default:
+ xfs_buf_ioerror(bp, -EFSCORRUPTED);
+diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
+index 41b80d3d3877..06bb4218b362 100644
+--- a/fs/xfs/libxfs/xfs_dir2_node.c
++++ b/fs/xfs/libxfs/xfs_dir2_node.c
+@@ -2132,6 +2132,7 @@ xfs_dir2_node_replace(
+ int error; /* error return value */
+ int i; /* btree level */
+ xfs_ino_t inum; /* new inode number */
++ int ftype; /* new file type */
+ xfs_dir2_leaf_t *leaf; /* leaf structure */
+ xfs_dir2_leaf_entry_t *lep; /* leaf entry being changed */
+ int rval; /* internal return value */
+@@ -2145,7 +2146,14 @@ xfs_dir2_node_replace(
+ state = xfs_da_state_alloc();
+ state->args = args;
+ state->mp = args->dp->i_mount;
++
++ /*
++ * We have to save new inode number and ftype since
++ * xfs_da3_node_lookup_int() is going to overwrite them
++ */
+ inum = args->inumber;
++ ftype = args->filetype;
++
+ /*
+ * Lookup the entry to change in the btree.
+ */
+@@ -2183,7 +2191,7 @@ xfs_dir2_node_replace(
+ * Fill in the new inode number and log the entry.
+ */
+ dep->inumber = cpu_to_be64(inum);
+- args->dp->d_ops->data_put_ftype(dep, args->filetype);
++ args->dp->d_ops->data_put_ftype(dep, ftype);
+ xfs_dir2_data_log_entry(args, state->extrablk.bp, dep);
+ rval = 0;
+ }
+diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
+index 858e1e62bbaa..65a45372fb1f 100644
+--- a/fs/xfs/xfs_super.c
++++ b/fs/xfs/xfs_super.c
+@@ -504,9 +504,9 @@ xfs_showargs(
+ seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
+
+ if (mp->m_logname)
+- seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
++ seq_show_option(m, MNTOPT_LOGDEV, mp->m_logname);
+ if (mp->m_rtname)
+- seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
++ seq_show_option(m, MNTOPT_RTDEV, mp->m_rtname);
+
+ if (mp->m_dalign > 0)
+ seq_printf(m, "," MNTOPT_SUNIT "=%d",
+diff --git a/include/linux/acpi.h b/include/linux/acpi.h
+index 4550be3bb63b..808c43afa8ac 100644
+--- a/include/linux/acpi.h
++++ b/include/linux/acpi.h
+@@ -198,7 +198,7 @@ struct pci_dev;
+
+ int acpi_pci_irq_enable (struct pci_dev *dev);
+ void acpi_penalize_isa_irq(int irq, int active);
+-
++void acpi_penalize_sci_irq(int irq, int trigger, int polarity);
+ void acpi_pci_irq_disable (struct pci_dev *dev);
+
+ extern int ec_read(u8 addr, u8 *val);
+diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
+index d86b753e9b30..5ed7771ad386 100644
+--- a/include/linux/iio/iio.h
++++ b/include/linux/iio/iio.h
+@@ -642,6 +642,15 @@ int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer,
+ #define IIO_DEGREE_TO_RAD(deg) (((deg) * 314159ULL + 9000000ULL) / 18000000ULL)
+
+ /**
++ * IIO_RAD_TO_DEGREE() - Convert rad to degree
++ * @rad: A value in rad
++ *
++ * Returns the given value converted from rad to degree
++ */
++#define IIO_RAD_TO_DEGREE(rad) \
++ (((rad) * 18000000ULL + 314159ULL / 2) / 314159ULL)
++
++/**
+ * IIO_G_TO_M_S_2() - Convert g to meter / second**2
+ * @g: A value in g
+ *
+@@ -649,4 +658,12 @@ int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer,
+ */
+ #define IIO_G_TO_M_S_2(g) ((g) * 980665ULL / 100000ULL)
+
++/**
++ * IIO_M_S_2_TO_G() - Convert meter / second**2 to g
++ * @ms2: A value in meter / second**2
++ *
++ * Returns the given value converted from meter / second**2 to g
++ */
++#define IIO_M_S_2_TO_G(ms2) (((ms2) * 100000ULL + 980665ULL / 2) / 980665ULL)
++
+ #endif /* _INDUSTRIAL_IO_H_ */
+diff --git a/include/linux/pci.h b/include/linux/pci.h
+index 3ef3a52068df..6e935e5eab56 100644
+--- a/include/linux/pci.h
++++ b/include/linux/pci.h
+@@ -180,6 +180,8 @@ enum pci_dev_flags {
+ PCI_DEV_FLAGS_NO_BUS_RESET = (__force pci_dev_flags_t) (1 << 6),
+ /* Do not use PM reset even if device advertises NoSoftRst- */
+ PCI_DEV_FLAGS_NO_PM_RESET = (__force pci_dev_flags_t) (1 << 7),
++ /* Get VPD from function 0 VPD */
++ PCI_DEV_FLAGS_VPD_REF_F0 = (__force pci_dev_flags_t) (1 << 8),
+ };
+
+ enum pci_irq_reroute_variant {
+diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
+index afbb1fd77c77..7848473a5bc8 100644
+--- a/include/linux/seq_file.h
++++ b/include/linux/seq_file.h
+@@ -148,6 +148,41 @@ static inline struct user_namespace *seq_user_ns(struct seq_file *seq)
+ #endif
+ }
+
++/**
++ * seq_show_options - display mount options with appropriate escapes.
++ * @m: the seq_file handle
++ * @name: the mount option name
++ * @value: the mount option name's value, can be NULL
++ */
++static inline void seq_show_option(struct seq_file *m, const char *name,
++ const char *value)
++{
++ seq_putc(m, ',');
++ seq_escape(m, name, ",= \t\n\\");
++ if (value) {
++ seq_putc(m, '=');
++ seq_escape(m, value, ", \t\n\\");
++ }
++}
++
++/**
++ * seq_show_option_n - display mount options with appropriate escapes
++ * where @value must be a specific length.
++ * @m: the seq_file handle
++ * @name: the mount option name
++ * @value: the mount option name's value, cannot be NULL
++ * @length: the length of @value to display
++ *
++ * This is a macro since this uses "length" to define the size of the
++ * stack buffer.
++ */
++#define seq_show_option_n(m, name, value, length) { \
++ char val_buf[length + 1]; \
++ strncpy(val_buf, value, length); \
++ val_buf[length] = '\0'; \
++ seq_show_option(m, name, val_buf); \
++}
++
+ #define SEQ_START_TOKEN ((void *)1)
+ /*
+ * Helpers for iteration over list_head-s in seq_files
+diff --git a/kernel/cgroup.c b/kernel/cgroup.c
+index e8a5491be756..4d65b66ae60d 100644
+--- a/kernel/cgroup.c
++++ b/kernel/cgroup.c
+@@ -1319,7 +1319,7 @@ static int cgroup_show_options(struct seq_file *seq,
+
+ for_each_subsys(ss, ssid)
+ if (root->subsys_mask & (1 << ssid))
+- seq_printf(seq, ",%s", ss->name);
++ seq_show_option(seq, ss->name, NULL);
+ if (root->flags & CGRP_ROOT_NOPREFIX)
+ seq_puts(seq, ",noprefix");
+ if (root->flags & CGRP_ROOT_XATTR)
+@@ -1327,13 +1327,14 @@ static int cgroup_show_options(struct seq_file *seq,
+
+ spin_lock(&release_agent_path_lock);
+ if (strlen(root->release_agent_path))
+- seq_printf(seq, ",release_agent=%s", root->release_agent_path);
++ seq_show_option(seq, "release_agent",
++ root->release_agent_path);
+ spin_unlock(&release_agent_path_lock);
+
+ if (test_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags))
+ seq_puts(seq, ",clone_children");
+ if (strlen(root->name))
+- seq_printf(seq, ",name=%s", root->name);
++ seq_show_option(seq, "name", root->name);
+ return 0;
+ }
+
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 123673291ffb..e6910526c84b 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -5328,6 +5328,14 @@ static int sched_cpu_active(struct notifier_block *nfb,
+ case CPU_STARTING:
+ set_cpu_rq_start_time();
+ return NOTIFY_OK;
++ case CPU_ONLINE:
++ /*
++ * At this point a starting CPU has marked itself as online via
++ * set_cpu_online(). But it might not yet have marked itself
++ * as active, which is essential from here on.
++ *
++ * Thus, fall-through and help the starting CPU along.
++ */
+ case CPU_DOWN_FAILED:
+ set_cpu_active((long)hcpu, true);
+ return NOTIFY_OK;
+diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
+index 79e8f71aef5b..3f76eb84b395 100644
+--- a/net/ceph/ceph_common.c
++++ b/net/ceph/ceph_common.c
+@@ -495,8 +495,11 @@ int ceph_print_client_options(struct seq_file *m, struct ceph_client *client)
+ struct ceph_options *opt = client->options;
+ size_t pos = m->count;
+
+- if (opt->name)
+- seq_printf(m, "name=%s,", opt->name);
++ if (opt->name) {
++ seq_puts(m, "name=");
++ seq_escape(m, opt->name, ", \t\n\\");
++ seq_putc(m, ',');
++ }
+ if (opt->key)
+ seq_puts(m, "secret=<hidden>,");
+
+diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
+index 7f8d7f19e044..280235cc3a98 100644
+--- a/security/selinux/hooks.c
++++ b/security/selinux/hooks.c
+@@ -1095,7 +1095,7 @@ static void selinux_write_opts(struct seq_file *m,
+ seq_puts(m, prefix);
+ if (has_comma)
+ seq_putc(m, '\"');
+- seq_puts(m, opts->mnt_opts[i]);
++ seq_escape(m, opts->mnt_opts[i], "\"\n\\");
+ if (has_comma)
+ seq_putc(m, '\"');
+ }
+diff --git a/sound/soc/codecs/adav80x.c b/sound/soc/codecs/adav80x.c
+index 4373ada95648..3a91a00fb973 100644
+--- a/sound/soc/codecs/adav80x.c
++++ b/sound/soc/codecs/adav80x.c
+@@ -864,7 +864,6 @@ const struct regmap_config adav80x_regmap_config = {
+ .val_bits = 8,
+ .pad_bits = 1,
+ .reg_bits = 7,
+- .read_flag_mask = 0x01,
+
+ .max_register = ADAV80X_PLL_OUTE,
+
+diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
+index eff4b4d512b7..ee91edcf3cb0 100644
+--- a/sound/soc/codecs/arizona.c
++++ b/sound/soc/codecs/arizona.c
+@@ -1610,17 +1610,6 @@ int arizona_init_dai(struct arizona_priv *priv, int id)
+ }
+ EXPORT_SYMBOL_GPL(arizona_init_dai);
+
+-static irqreturn_t arizona_fll_clock_ok(int irq, void *data)
+-{
+- struct arizona_fll *fll = data;
+-
+- arizona_fll_dbg(fll, "clock OK\n");
+-
+- complete(&fll->ok);
+-
+- return IRQ_HANDLED;
+-}
+-
+ static struct {
+ unsigned int min;
+ unsigned int max;
+@@ -1902,17 +1891,18 @@ static int arizona_is_enabled_fll(struct arizona_fll *fll)
+ static int arizona_enable_fll(struct arizona_fll *fll)
+ {
+ struct arizona *arizona = fll->arizona;
+- unsigned long time_left;
+ bool use_sync = false;
+ int already_enabled = arizona_is_enabled_fll(fll);
+ struct arizona_fll_cfg cfg;
++ int i;
++ unsigned int val;
+
+ if (already_enabled < 0)
+ return already_enabled;
+
+ if (already_enabled) {
+ /* Facilitate smooth refclk across the transition */
+- regmap_update_bits_async(fll->arizona->regmap, fll->base + 0x7,
++ regmap_update_bits_async(fll->arizona->regmap, fll->base + 0x9,
+ ARIZONA_FLL1_GAIN_MASK, 0);
+ regmap_update_bits_async(fll->arizona->regmap, fll->base + 1,
+ ARIZONA_FLL1_FREERUN,
+@@ -1964,9 +1954,6 @@ static int arizona_enable_fll(struct arizona_fll *fll)
+ if (!already_enabled)
+ pm_runtime_get(arizona->dev);
+
+- /* Clear any pending completions */
+- try_wait_for_completion(&fll->ok);
+-
+ regmap_update_bits_async(arizona->regmap, fll->base + 1,
+ ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
+ if (use_sync)
+@@ -1978,10 +1965,24 @@ static int arizona_enable_fll(struct arizona_fll *fll)
+ regmap_update_bits_async(arizona->regmap, fll->base + 1,
+ ARIZONA_FLL1_FREERUN, 0);
+
+- time_left = wait_for_completion_timeout(&fll->ok,
+- msecs_to_jiffies(250));
+- if (time_left == 0)
++ arizona_fll_dbg(fll, "Waiting for FLL lock...\n");
++ val = 0;
++ for (i = 0; i < 15; i++) {
++ if (i < 5)
++ usleep_range(200, 400);
++ else
++ msleep(20);
++
++ regmap_read(arizona->regmap,
++ ARIZONA_INTERRUPT_RAW_STATUS_5,
++ &val);
++ if (val & (ARIZONA_FLL1_CLOCK_OK_STS << (fll->id - 1)))
++ break;
++ }
++ if (i == 15)
+ arizona_fll_warn(fll, "Timed out waiting for lock\n");
++ else
++ arizona_fll_dbg(fll, "FLL locked (%d polls)\n", i);
+
+ return 0;
+ }
+@@ -2066,11 +2067,8 @@ EXPORT_SYMBOL_GPL(arizona_set_fll);
+ int arizona_init_fll(struct arizona *arizona, int id, int base, int lock_irq,
+ int ok_irq, struct arizona_fll *fll)
+ {
+- int ret;
+ unsigned int val;
+
+- init_completion(&fll->ok);
+-
+ fll->id = id;
+ fll->base = base;
+ fll->arizona = arizona;
+@@ -2092,13 +2090,6 @@ int arizona_init_fll(struct arizona *arizona, int id, int base, int lock_irq,
+ snprintf(fll->clock_ok_name, sizeof(fll->clock_ok_name),
+ "FLL%d clock OK", id);
+
+- ret = arizona_request_irq(arizona, ok_irq, fll->clock_ok_name,
+- arizona_fll_clock_ok, fll);
+- if (ret != 0) {
+- dev_err(arizona->dev, "Failed to get FLL%d clock OK IRQ: %d\n",
+- id, ret);
+- }
+-
+ regmap_update_bits(arizona->regmap, fll->base + 1,
+ ARIZONA_FLL1_FREERUN, 0);
+
+diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h
+index 11ff899b0272..14e8485b5585 100644
+--- a/sound/soc/codecs/arizona.h
++++ b/sound/soc/codecs/arizona.h
+@@ -233,7 +233,6 @@ struct arizona_fll {
+ int id;
+ unsigned int base;
+ unsigned int vco_mult;
+- struct completion ok;
+
+ unsigned int fout;
+ int sync_src;
+diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
+index 178e55d4d481..06317f7d945f 100644
+--- a/sound/soc/codecs/rt5640.c
++++ b/sound/soc/codecs/rt5640.c
+@@ -985,6 +985,35 @@ static int rt5640_hp_event(struct snd_soc_dapm_widget *w,
+ return 0;
+ }
+
++static int rt5640_lout_event(struct snd_soc_dapm_widget *w,
++ struct snd_kcontrol *kcontrol, int event)
++{
++ struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
++
++ switch (event) {
++ case SND_SOC_DAPM_POST_PMU:
++ hp_amp_power_on(codec);
++ snd_soc_update_bits(codec, RT5640_PWR_ANLG1,
++ RT5640_PWR_LM, RT5640_PWR_LM);
++ snd_soc_update_bits(codec, RT5640_OUTPUT,
++ RT5640_L_MUTE | RT5640_R_MUTE, 0);
++ break;
++
++ case SND_SOC_DAPM_PRE_PMD:
++ snd_soc_update_bits(codec, RT5640_OUTPUT,
++ RT5640_L_MUTE | RT5640_R_MUTE,
++ RT5640_L_MUTE | RT5640_R_MUTE);
++ snd_soc_update_bits(codec, RT5640_PWR_ANLG1,
++ RT5640_PWR_LM, 0);
++ break;
++
++ default:
++ return 0;
++ }
++
++ return 0;
++}
++
+ static int rt5640_hp_power_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+ {
+@@ -1180,13 +1209,16 @@ static const struct snd_soc_dapm_widget rt5640_dapm_widgets[] = {
+ 0, rt5640_spo_l_mix, ARRAY_SIZE(rt5640_spo_l_mix)),
+ SND_SOC_DAPM_MIXER("SPOR MIX", SND_SOC_NOPM, 0,
+ 0, rt5640_spo_r_mix, ARRAY_SIZE(rt5640_spo_r_mix)),
+- SND_SOC_DAPM_MIXER("LOUT MIX", RT5640_PWR_ANLG1, RT5640_PWR_LM_BIT, 0,
++ SND_SOC_DAPM_MIXER("LOUT MIX", SND_SOC_NOPM, 0, 0,
+ rt5640_lout_mix, ARRAY_SIZE(rt5640_lout_mix)),
+ SND_SOC_DAPM_SUPPLY_S("Improve HP Amp Drv", 1, SND_SOC_NOPM,
+ 0, 0, rt5640_hp_power_event, SND_SOC_DAPM_POST_PMU),
+ SND_SOC_DAPM_PGA_S("HP Amp", 1, SND_SOC_NOPM, 0, 0,
+ rt5640_hp_event,
+ SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
++ SND_SOC_DAPM_PGA_S("LOUT amp", 1, SND_SOC_NOPM, 0, 0,
++ rt5640_lout_event,
++ SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+ SND_SOC_DAPM_SUPPLY("HP L Amp", RT5640_PWR_ANLG1,
+ RT5640_PWR_HP_L_BIT, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("HP R Amp", RT5640_PWR_ANLG1,
+@@ -1501,8 +1533,10 @@ static const struct snd_soc_dapm_route rt5640_dapm_routes[] = {
+ {"HP R Playback", "Switch", "HP Amp"},
+ {"HPOL", NULL, "HP L Playback"},
+ {"HPOR", NULL, "HP R Playback"},
+- {"LOUTL", NULL, "LOUT MIX"},
+- {"LOUTR", NULL, "LOUT MIX"},
++
++ {"LOUT amp", NULL, "LOUT MIX"},
++ {"LOUTL", NULL, "LOUT amp"},
++ {"LOUTR", NULL, "LOUT amp"},
+ };
+
+ static const struct snd_soc_dapm_route rt5640_specific_dapm_routes[] = {
+diff --git a/sound/soc/samsung/arndale_rt5631.c b/sound/soc/samsung/arndale_rt5631.c
+index 8bf2e2c4bafb..9e371eb3e4fa 100644
+--- a/sound/soc/samsung/arndale_rt5631.c
++++ b/sound/soc/samsung/arndale_rt5631.c
+@@ -116,15 +116,6 @@ static int arndale_audio_probe(struct platform_device *pdev)
+ return ret;
+ }
+
+-static int arndale_audio_remove(struct platform_device *pdev)
+-{
+- struct snd_soc_card *card = platform_get_drvdata(pdev);
+-
+- snd_soc_unregister_card(card);
+-
+- return 0;
+-}
+-
+ static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = {
+ { .compatible = "samsung,arndale-rt5631", },
+ { .compatible = "samsung,arndale-alc5631", },
+@@ -139,7 +130,6 @@ static struct platform_driver arndale_audio_driver = {
+ .of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match),
+ },
+ .probe = arndale_audio_probe,
+- .remove = arndale_audio_remove,
+ };
+
+ module_platform_driver(arndale_audio_driver);
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-09-14 15:20 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-09-14 15:20 UTC (permalink / raw
To: gentoo-commits
commit: 8f2b461875c44efdd4cc8d0f80537f69c8ccf5a3
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Sep 14 15:20:19 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Sep 14 15:20:19 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=8f2b4618
Linux patch 4.1.7
0000_README | 4 +
1006_linux-4.1.7.patch | 3075 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 3079 insertions(+)
diff --git a/0000_README b/0000_README
index 83ddebf..ad474e3 100644
--- a/0000_README
+++ b/0000_README
@@ -67,6 +67,10 @@ Patch: 1005_linux-4.1.6.patch
From: http://www.kernel.org
Desc: Linux 4.1.6
+Patch: 1006_linux-4.1.7.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.7
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1006_linux-4.1.7.patch b/1006_linux-4.1.7.patch
new file mode 100644
index 0000000..8d4a5d9
--- /dev/null
+++ b/1006_linux-4.1.7.patch
@@ -0,0 +1,3075 @@
+diff --git a/Makefile b/Makefile
+index 838dabcb7f48..b8591e5f79b8 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 6
++SUBLEVEL = 7
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
+index f03a091cd076..dfcc0dd637e5 100644
+--- a/arch/arm/boot/dts/dra7.dtsi
++++ b/arch/arm/boot/dts/dra7.dtsi
+@@ -116,7 +116,7 @@
+ ranges = <0 0x2000 0x2000>;
+
+ scm_conf: scm_conf@0 {
+- compatible = "syscon";
++ compatible = "syscon", "simple-bus";
+ reg = <0x0 0x1400>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
+index f74a8ded515f..38c786018a09 100644
+--- a/arch/arm/boot/dts/imx6qdl.dtsi
++++ b/arch/arm/boot/dts/imx6qdl.dtsi
+@@ -153,10 +153,10 @@
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+- interrupt-map = <0 0 0 1 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+- <0 0 0 2 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+- <0 0 0 3 &intc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+- <0 0 0 4 &intc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
++ interrupt-map = <0 0 0 1 &gpc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
++ <0 0 0 2 &gpc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
++ <0 0 0 3 &gpc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
++ <0 0 0 4 &gpc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6QDL_CLK_PCIE_AXI>,
+ <&clks IMX6QDL_CLK_LVDS1_GATE>,
+ <&clks IMX6QDL_CLK_PCIE_REF_125M>;
+diff --git a/arch/arm/boot/dts/omap2430.dtsi b/arch/arm/boot/dts/omap2430.dtsi
+index 11a7963be003..2390f387c271 100644
+--- a/arch/arm/boot/dts/omap2430.dtsi
++++ b/arch/arm/boot/dts/omap2430.dtsi
+@@ -51,7 +51,8 @@
+ };
+
+ scm_conf: scm_conf@270 {
+- compatible = "syscon";
++ compatible = "syscon",
++ "simple-bus";
+ reg = <0x270 0x240>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
+index f884d6adb71e..84be9da74c7e 100644
+--- a/arch/arm/boot/dts/omap4.dtsi
++++ b/arch/arm/boot/dts/omap4.dtsi
+@@ -191,7 +191,8 @@
+ };
+
+ omap4_padconf_global: omap4_padconf_global@5a0 {
+- compatible = "syscon";
++ compatible = "syscon",
++ "simple-bus";
+ reg = <0x5a0 0x170>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
+index 7d24ae0306b5..874a26f9dc0f 100644
+--- a/arch/arm/boot/dts/omap5.dtsi
++++ b/arch/arm/boot/dts/omap5.dtsi
+@@ -180,7 +180,8 @@
+ };
+
+ omap5_padconf_global: omap5_padconf_global@5a0 {
+- compatible = "syscon";
++ compatible = "syscon",
++ "simple-bus";
+ reg = <0x5a0 0xec>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
+index 4c38674c73ec..54d274da7ccb 100644
+--- a/arch/arm/mach-bcm/Makefile
++++ b/arch/arm/mach-bcm/Makefile
+@@ -43,5 +43,5 @@ obj-$(CONFIG_ARCH_BCM_63XX) := bcm63xx.o
+ ifeq ($(CONFIG_ARCH_BRCMSTB),y)
+ CFLAGS_platsmp-brcmstb.o += -march=armv7-a
+ obj-y += brcmstb.o
+-obj-$(CONFIG_SMP) += headsmp-brcmstb.o platsmp-brcmstb.o
++obj-$(CONFIG_SMP) += platsmp-brcmstb.o
+ endif
+diff --git a/arch/arm/mach-bcm/brcmstb.h b/arch/arm/mach-bcm/brcmstb.h
+deleted file mode 100644
+index ec0c3d112b36..000000000000
+--- a/arch/arm/mach-bcm/brcmstb.h
++++ /dev/null
+@@ -1,19 +0,0 @@
+-/*
+- * Copyright (C) 2013-2014 Broadcom Corporation
+- *
+- * This program is free software; you can redistribute it and/or
+- * modify it under the terms of the GNU General Public License as
+- * published by the Free Software Foundation version 2.
+- *
+- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+- * kind, whether express or implied; without even the implied warranty
+- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+- * GNU General Public License for more details.
+- */
+-
+-#ifndef __BRCMSTB_H__
+-#define __BRCMSTB_H__
+-
+-void brcmstb_secondary_startup(void);
+-
+-#endif /* __BRCMSTB_H__ */
+diff --git a/arch/arm/mach-bcm/headsmp-brcmstb.S b/arch/arm/mach-bcm/headsmp-brcmstb.S
+deleted file mode 100644
+index 199c1ea58248..000000000000
+--- a/arch/arm/mach-bcm/headsmp-brcmstb.S
++++ /dev/null
+@@ -1,33 +0,0 @@
+-/*
+- * SMP boot code for secondary CPUs
+- * Based on arch/arm/mach-tegra/headsmp.S
+- *
+- * Copyright (C) 2010 NVIDIA, Inc.
+- * Copyright (C) 2013-2014 Broadcom Corporation
+- *
+- * This program is free software; you can redistribute it and/or
+- * modify it under the terms of the GNU General Public License as
+- * published by the Free Software Foundation version 2.
+- *
+- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+- * kind, whether express or implied; without even the implied warranty
+- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+- * GNU General Public License for more details.
+- */
+-
+-#include <asm/assembler.h>
+-#include <linux/linkage.h>
+-#include <linux/init.h>
+-
+- .section ".text.head", "ax"
+-
+-ENTRY(brcmstb_secondary_startup)
+- /*
+- * Ensure CPU is in a sane state by disabling all IRQs and switching
+- * into SVC mode.
+- */
+- setmode PSR_I_BIT | PSR_F_BIT | SVC_MODE, r0
+-
+- bl v7_invalidate_l1
+- b secondary_startup
+-ENDPROC(brcmstb_secondary_startup)
+diff --git a/arch/arm/mach-bcm/platsmp-brcmstb.c b/arch/arm/mach-bcm/platsmp-brcmstb.c
+index e209e6fc7caf..44d6bddf7a4e 100644
+--- a/arch/arm/mach-bcm/platsmp-brcmstb.c
++++ b/arch/arm/mach-bcm/platsmp-brcmstb.c
+@@ -30,8 +30,6 @@
+ #include <asm/mach-types.h>
+ #include <asm/smp_plat.h>
+
+-#include "brcmstb.h"
+-
+ enum {
+ ZONE_MAN_CLKEN_MASK = BIT(0),
+ ZONE_MAN_RESET_CNTL_MASK = BIT(1),
+@@ -153,7 +151,7 @@ static void brcmstb_cpu_boot(u32 cpu)
+ * Set the reset vector to point to the secondary_startup
+ * routine
+ */
+- cpu_set_boot_addr(cpu, virt_to_phys(brcmstb_secondary_startup));
++ cpu_set_boot_addr(cpu, virt_to_phys(secondary_startup));
+
+ /* Unhalt the cpu */
+ cpu_rst_cfg_set(cpu, 0);
+diff --git a/arch/arm/mach-berlin/headsmp.S b/arch/arm/mach-berlin/headsmp.S
+index 4a4c56a58ad3..dc82a3486b05 100644
+--- a/arch/arm/mach-berlin/headsmp.S
++++ b/arch/arm/mach-berlin/headsmp.S
+@@ -12,12 +12,6 @@
+ #include <linux/init.h>
+ #include <asm/assembler.h>
+
+-ENTRY(berlin_secondary_startup)
+- ARM_BE8(setend be)
+- bl v7_invalidate_l1
+- b secondary_startup
+-ENDPROC(berlin_secondary_startup)
+-
+ /*
+ * If the following instruction is set in the reset exception vector, CPUs
+ * will fetch the value of the software reset address vector when being
+diff --git a/arch/arm/mach-berlin/platsmp.c b/arch/arm/mach-berlin/platsmp.c
+index 702e7982015a..34a3753e7356 100644
+--- a/arch/arm/mach-berlin/platsmp.c
++++ b/arch/arm/mach-berlin/platsmp.c
+@@ -22,7 +22,6 @@
+ #define RESET_VECT 0x00
+ #define SW_RESET_ADDR 0x94
+
+-extern void berlin_secondary_startup(void);
+ extern u32 boot_inst;
+
+ static void __iomem *cpu_ctrl;
+@@ -85,7 +84,7 @@ static void __init berlin_smp_prepare_cpus(unsigned int max_cpus)
+ * Write the secondary startup address into the SW reset address
+ * vector. This is used by boot_inst.
+ */
+- writel(virt_to_phys(berlin_secondary_startup), vectors_base + SW_RESET_ADDR);
++ writel(virt_to_phys(secondary_startup), vectors_base + SW_RESET_ADDR);
+
+ iounmap(vectors_base);
+ unmap_scu:
+diff --git a/arch/arm/mach-hisi/Makefile b/arch/arm/mach-hisi/Makefile
+index 6b7b3033de0b..659db1933ed3 100644
+--- a/arch/arm/mach-hisi/Makefile
++++ b/arch/arm/mach-hisi/Makefile
+@@ -6,4 +6,4 @@ CFLAGS_platmcpm.o := -march=armv7-a
+
+ obj-y += hisilicon.o
+ obj-$(CONFIG_MCPM) += platmcpm.o
+-obj-$(CONFIG_SMP) += platsmp.o hotplug.o headsmp.o
++obj-$(CONFIG_SMP) += platsmp.o hotplug.o
+diff --git a/arch/arm/mach-hisi/core.h b/arch/arm/mach-hisi/core.h
+index 92a682d8e939..c7648ef1825c 100644
+--- a/arch/arm/mach-hisi/core.h
++++ b/arch/arm/mach-hisi/core.h
+@@ -12,7 +12,6 @@ extern void hi3xxx_cpu_die(unsigned int cpu);
+ extern int hi3xxx_cpu_kill(unsigned int cpu);
+ extern void hi3xxx_set_cpu(int cpu, bool enable);
+
+-extern void hisi_secondary_startup(void);
+ extern struct smp_operations hix5hd2_smp_ops;
+ extern void hix5hd2_set_cpu(int cpu, bool enable);
+ extern void hix5hd2_cpu_die(unsigned int cpu);
+diff --git a/arch/arm/mach-hisi/headsmp.S b/arch/arm/mach-hisi/headsmp.S
+deleted file mode 100644
+index 81e35b159e75..000000000000
+--- a/arch/arm/mach-hisi/headsmp.S
++++ /dev/null
+@@ -1,16 +0,0 @@
+-/*
+- * Copyright (c) 2014 Hisilicon Limited.
+- * Copyright (c) 2014 Linaro Ltd.
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- */
+-#include <linux/linkage.h>
+-#include <linux/init.h>
+-
+- __CPUINIT
+-
+-ENTRY(hisi_secondary_startup)
+- bl v7_invalidate_l1
+- b secondary_startup
+diff --git a/arch/arm/mach-hisi/platsmp.c b/arch/arm/mach-hisi/platsmp.c
+index 8880c8e8b296..51744127db66 100644
+--- a/arch/arm/mach-hisi/platsmp.c
++++ b/arch/arm/mach-hisi/platsmp.c
+@@ -118,7 +118,7 @@ static int hix5hd2_boot_secondary(unsigned int cpu, struct task_struct *idle)
+ {
+ phys_addr_t jumpaddr;
+
+- jumpaddr = virt_to_phys(hisi_secondary_startup);
++ jumpaddr = virt_to_phys(secondary_startup);
+ hix5hd2_set_scu_boot_addr(HIX5HD2_BOOT_ADDRESS, jumpaddr);
+ hix5hd2_set_cpu(cpu, true);
+ arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+@@ -156,7 +156,7 @@ static int hip01_boot_secondary(unsigned int cpu, struct task_struct *idle)
+ struct device_node *node;
+
+
+- jumpaddr = virt_to_phys(hisi_secondary_startup);
++ jumpaddr = virt_to_phys(secondary_startup);
+ hip01_set_boot_addr(HIP01_BOOT_ADDRESS, jumpaddr);
+
+ node = of_find_compatible_node(NULL, NULL, "hisilicon,hip01-sysctrl");
+diff --git a/arch/arm/mach-imx/headsmp.S b/arch/arm/mach-imx/headsmp.S
+index de5047c8a6c8..b5e976816b63 100644
+--- a/arch/arm/mach-imx/headsmp.S
++++ b/arch/arm/mach-imx/headsmp.S
+@@ -25,7 +25,6 @@ diag_reg_offset:
+ .endm
+
+ ENTRY(v7_secondary_startup)
+- bl v7_invalidate_l1
+ set_diag_reg
+ b secondary_startup
+ ENDPROC(v7_secondary_startup)
+diff --git a/arch/arm/mach-mvebu/headsmp-a9.S b/arch/arm/mach-mvebu/headsmp-a9.S
+index 08d5ed46b996..48e4c4b3cd1c 100644
+--- a/arch/arm/mach-mvebu/headsmp-a9.S
++++ b/arch/arm/mach-mvebu/headsmp-a9.S
+@@ -21,7 +21,6 @@
+
+ ENTRY(mvebu_cortex_a9_secondary_startup)
+ ARM_BE8(setend be)
+- bl v7_invalidate_l1
+ bl armada_38x_scu_power_up
+ b secondary_startup
+ ENDPROC(mvebu_cortex_a9_secondary_startup)
+diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
+index 3b56722dfd8a..6833df45d7b1 100644
+--- a/arch/arm/mach-omap2/omap-wakeupgen.c
++++ b/arch/arm/mach-omap2/omap-wakeupgen.c
+@@ -392,6 +392,7 @@ static struct irq_chip wakeupgen_chip = {
+ .irq_mask = wakeupgen_mask,
+ .irq_unmask = wakeupgen_unmask,
+ .irq_retrigger = irq_chip_retrigger_hierarchy,
++ .irq_set_type = irq_chip_set_type_parent,
+ .flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND,
+ #ifdef CONFIG_SMP
+ .irq_set_affinity = irq_chip_set_affinity_parent,
+diff --git a/arch/arm/mach-prima2/headsmp.S b/arch/arm/mach-prima2/headsmp.S
+index d86fe33c5f53..209d9fc5c16c 100644
+--- a/arch/arm/mach-prima2/headsmp.S
++++ b/arch/arm/mach-prima2/headsmp.S
+@@ -15,7 +15,6 @@
+ * ready for them to initialise.
+ */
+ ENTRY(sirfsoc_secondary_startup)
+- bl v7_invalidate_l1
+ mrc p15, 0, r0, c0, c0, 5
+ and r0, r0, #15
+ adr r4, 1f
+diff --git a/arch/arm/mach-rockchip/core.h b/arch/arm/mach-rockchip/core.h
+index 39bca96b555a..492c048813da 100644
+--- a/arch/arm/mach-rockchip/core.h
++++ b/arch/arm/mach-rockchip/core.h
+@@ -17,4 +17,3 @@ extern char rockchip_secondary_trampoline;
+ extern char rockchip_secondary_trampoline_end;
+
+ extern unsigned long rockchip_boot_fn;
+-extern void rockchip_secondary_startup(void);
+diff --git a/arch/arm/mach-rockchip/headsmp.S b/arch/arm/mach-rockchip/headsmp.S
+index 46c22dedf632..d69708b07282 100644
+--- a/arch/arm/mach-rockchip/headsmp.S
++++ b/arch/arm/mach-rockchip/headsmp.S
+@@ -15,14 +15,6 @@
+ #include <linux/linkage.h>
+ #include <linux/init.h>
+
+-ENTRY(rockchip_secondary_startup)
+- mrc p15, 0, r0, c0, c0, 0 @ read main ID register
+- ldr r1, =0x00000c09 @ Cortex-A9 primary part number
+- teq r0, r1
+- beq v7_invalidate_l1
+- b secondary_startup
+-ENDPROC(rockchip_secondary_startup)
+-
+ ENTRY(rockchip_secondary_trampoline)
+ ldr pc, 1f
+ ENDPROC(rockchip_secondary_trampoline)
+diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c
+index 5b4ca3c3c879..2e6ab67e2284 100644
+--- a/arch/arm/mach-rockchip/platsmp.c
++++ b/arch/arm/mach-rockchip/platsmp.c
+@@ -149,8 +149,7 @@ static int __cpuinit rockchip_boot_secondary(unsigned int cpu,
+ * sram_base_addr + 8: start address for pc
+ * */
+ udelay(10);
+- writel(virt_to_phys(rockchip_secondary_startup),
+- sram_base_addr + 8);
++ writel(virt_to_phys(secondary_startup), sram_base_addr + 8);
+ writel(0xDEADBEAF, sram_base_addr + 4);
+ dsb_sev();
+ }
+@@ -189,7 +188,7 @@ static int __init rockchip_smp_prepare_sram(struct device_node *node)
+ }
+
+ /* set the boot function for the sram code */
+- rockchip_boot_fn = virt_to_phys(rockchip_secondary_startup);
++ rockchip_boot_fn = virt_to_phys(secondary_startup);
+
+ /* copy the trampoline to sram, that runs during startup of the core */
+ memcpy(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
+diff --git a/arch/arm/mach-shmobile/common.h b/arch/arm/mach-shmobile/common.h
+index afc60bad6fd6..476092b86c6e 100644
+--- a/arch/arm/mach-shmobile/common.h
++++ b/arch/arm/mach-shmobile/common.h
+@@ -14,7 +14,6 @@ extern void shmobile_smp_sleep(void);
+ extern void shmobile_smp_hook(unsigned int cpu, unsigned long fn,
+ unsigned long arg);
+ extern int shmobile_smp_cpu_disable(unsigned int cpu);
+-extern void shmobile_invalidate_start(void);
+ extern void shmobile_boot_scu(void);
+ extern void shmobile_smp_scu_prepare_cpus(unsigned int max_cpus);
+ extern void shmobile_smp_scu_cpu_die(unsigned int cpu);
+diff --git a/arch/arm/mach-shmobile/headsmp-scu.S b/arch/arm/mach-shmobile/headsmp-scu.S
+index 69df8bfac167..fa5248c52399 100644
+--- a/arch/arm/mach-shmobile/headsmp-scu.S
++++ b/arch/arm/mach-shmobile/headsmp-scu.S
+@@ -22,7 +22,7 @@
+ * Boot code for secondary CPUs.
+ *
+ * First we turn on L1 cache coherency for our CPU. Then we jump to
+- * shmobile_invalidate_start that invalidates the cache and hands over control
++ * secondary_startup that invalidates the cache and hands over control
+ * to the common ARM startup code.
+ */
+ ENTRY(shmobile_boot_scu)
+@@ -36,7 +36,7 @@ ENTRY(shmobile_boot_scu)
+ bic r2, r2, r3 @ Clear bits of our CPU (Run Mode)
+ str r2, [r0, #8] @ write back
+
+- b shmobile_invalidate_start
++ b secondary_startup
+ ENDPROC(shmobile_boot_scu)
+
+ .text
+diff --git a/arch/arm/mach-shmobile/headsmp.S b/arch/arm/mach-shmobile/headsmp.S
+index 50c491567e11..330c1fc63197 100644
+--- a/arch/arm/mach-shmobile/headsmp.S
++++ b/arch/arm/mach-shmobile/headsmp.S
+@@ -16,13 +16,6 @@
+ #include <asm/assembler.h>
+ #include <asm/memory.h>
+
+-#ifdef CONFIG_SMP
+-ENTRY(shmobile_invalidate_start)
+- bl v7_invalidate_l1
+- b secondary_startup
+-ENDPROC(shmobile_invalidate_start)
+-#endif
+-
+ /*
+ * Reset vector for secondary CPUs.
+ * This will be mapped at address 0 by SBAR register.
+diff --git a/arch/arm/mach-shmobile/platsmp-apmu.c b/arch/arm/mach-shmobile/platsmp-apmu.c
+index f483b560b066..b0790fc32282 100644
+--- a/arch/arm/mach-shmobile/platsmp-apmu.c
++++ b/arch/arm/mach-shmobile/platsmp-apmu.c
+@@ -133,7 +133,7 @@ void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus,
+ int shmobile_smp_apmu_boot_secondary(unsigned int cpu, struct task_struct *idle)
+ {
+ /* For this particular CPU register boot vector */
+- shmobile_smp_hook(cpu, virt_to_phys(shmobile_invalidate_start), 0);
++ shmobile_smp_hook(cpu, virt_to_phys(secondary_startup), 0);
+
+ return apmu_wrap(cpu, apmu_power_on);
+ }
+diff --git a/arch/arm/mach-socfpga/core.h b/arch/arm/mach-socfpga/core.h
+index a0f3b1cd497c..767c09e954a0 100644
+--- a/arch/arm/mach-socfpga/core.h
++++ b/arch/arm/mach-socfpga/core.h
+@@ -31,7 +31,6 @@
+
+ #define RSTMGR_MPUMODRST_CPU1 0x2 /* CPU1 Reset */
+
+-extern void socfpga_secondary_startup(void);
+ extern void __iomem *socfpga_scu_base_addr;
+
+ extern void socfpga_init_clocks(void);
+diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S
+index f65ea0af4af3..5bb016427107 100644
+--- a/arch/arm/mach-socfpga/headsmp.S
++++ b/arch/arm/mach-socfpga/headsmp.S
+@@ -30,8 +30,3 @@ ENTRY(secondary_trampoline)
+ 1: .long .
+ .long socfpga_cpu1start_addr
+ ENTRY(secondary_trampoline_end)
+-
+-ENTRY(socfpga_secondary_startup)
+- bl v7_invalidate_l1
+- b secondary_startup
+-ENDPROC(socfpga_secondary_startup)
+diff --git a/arch/arm/mach-socfpga/platsmp.c b/arch/arm/mach-socfpga/platsmp.c
+index c64d89b7c0ca..79c5336c569f 100644
+--- a/arch/arm/mach-socfpga/platsmp.c
++++ b/arch/arm/mach-socfpga/platsmp.c
+@@ -40,7 +40,7 @@ static int socfpga_boot_secondary(unsigned int cpu, struct task_struct *idle)
+
+ memcpy(phys_to_virt(0), &secondary_trampoline, trampoline_size);
+
+- writel(virt_to_phys(socfpga_secondary_startup),
++ writel(virt_to_phys(secondary_startup),
+ sys_manager_base_addr + (socfpga_cpu1start_addr & 0x000000ff));
+
+ flush_cache_all();
+diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
+index e48a74458c25..fffad2426ee4 100644
+--- a/arch/arm/mach-tegra/Makefile
++++ b/arch/arm/mach-tegra/Makefile
+@@ -19,7 +19,7 @@ obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += pm-tegra30.o
+ ifeq ($(CONFIG_CPU_IDLE),y)
+ obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += cpuidle-tegra30.o
+ endif
+-obj-$(CONFIG_SMP) += platsmp.o headsmp.o
++obj-$(CONFIG_SMP) += platsmp.o
+ obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
+
+ obj-$(CONFIG_ARCH_TEGRA_114_SOC) += sleep-tegra30.o
+diff --git a/arch/arm/mach-tegra/headsmp.S b/arch/arm/mach-tegra/headsmp.S
+deleted file mode 100644
+index 2072e7322c39..000000000000
+--- a/arch/arm/mach-tegra/headsmp.S
++++ /dev/null
+@@ -1,12 +0,0 @@
+-#include <linux/linkage.h>
+-#include <linux/init.h>
+-
+-#include "sleep.h"
+-
+- .section ".text.head", "ax"
+-
+-ENTRY(tegra_secondary_startup)
+- check_cpu_part_num 0xc09, r8, r9
+- bleq v7_invalidate_l1
+- b secondary_startup
+-ENDPROC(tegra_secondary_startup)
+diff --git a/arch/arm/mach-tegra/reset.c b/arch/arm/mach-tegra/reset.c
+index 894c5c472184..6fd9db54887e 100644
+--- a/arch/arm/mach-tegra/reset.c
++++ b/arch/arm/mach-tegra/reset.c
+@@ -94,7 +94,7 @@ void __init tegra_cpu_reset_handler_init(void)
+ __tegra_cpu_reset_handler_data[TEGRA_RESET_MASK_PRESENT] =
+ *((u32 *)cpu_possible_mask);
+ __tegra_cpu_reset_handler_data[TEGRA_RESET_STARTUP_SECONDARY] =
+- virt_to_phys((void *)tegra_secondary_startup);
++ virt_to_phys((void *)secondary_startup);
+ #endif
+
+ #ifdef CONFIG_PM_SLEEP
+diff --git a/arch/arm/mach-tegra/reset.h b/arch/arm/mach-tegra/reset.h
+index 29c3dec0126a..9c479c7925b8 100644
+--- a/arch/arm/mach-tegra/reset.h
++++ b/arch/arm/mach-tegra/reset.h
+@@ -37,7 +37,6 @@ void __tegra_cpu_reset_handler_start(void);
+ void __tegra_cpu_reset_handler(void);
+ void __tegra20_cpu1_resettable_status_offset(void);
+ void __tegra_cpu_reset_handler_end(void);
+-void tegra_secondary_startup(void);
+
+ #ifdef CONFIG_PM_SLEEP
+ #define tegra_cpu_lp1_mask \
+diff --git a/arch/arm/mach-zynq/common.h b/arch/arm/mach-zynq/common.h
+index 382c60e9aa16..7038cae95ddc 100644
+--- a/arch/arm/mach-zynq/common.h
++++ b/arch/arm/mach-zynq/common.h
+@@ -17,8 +17,6 @@
+ #ifndef __MACH_ZYNQ_COMMON_H__
+ #define __MACH_ZYNQ_COMMON_H__
+
+-void zynq_secondary_startup(void);
+-
+ extern int zynq_slcr_init(void);
+ extern int zynq_early_slcr_init(void);
+ extern void zynq_slcr_system_reset(void);
+diff --git a/arch/arm/mach-zynq/headsmp.S b/arch/arm/mach-zynq/headsmp.S
+index dd8c071941e7..045c72720a4d 100644
+--- a/arch/arm/mach-zynq/headsmp.S
++++ b/arch/arm/mach-zynq/headsmp.S
+@@ -22,8 +22,3 @@ zynq_secondary_trampoline_jump:
+ .globl zynq_secondary_trampoline_end
+ zynq_secondary_trampoline_end:
+ ENDPROC(zynq_secondary_trampoline)
+-
+-ENTRY(zynq_secondary_startup)
+- bl v7_invalidate_l1
+- b secondary_startup
+-ENDPROC(zynq_secondary_startup)
+diff --git a/arch/arm/mach-zynq/platsmp.c b/arch/arm/mach-zynq/platsmp.c
+index 52d768ff7857..f66816c49186 100644
+--- a/arch/arm/mach-zynq/platsmp.c
++++ b/arch/arm/mach-zynq/platsmp.c
+@@ -87,10 +87,9 @@ int zynq_cpun_start(u32 address, int cpu)
+ }
+ EXPORT_SYMBOL(zynq_cpun_start);
+
+-static int zynq_boot_secondary(unsigned int cpu,
+- struct task_struct *idle)
++static int zynq_boot_secondary(unsigned int cpu, struct task_struct *idle)
+ {
+- return zynq_cpun_start(virt_to_phys(zynq_secondary_startup), cpu);
++ return zynq_cpun_start(virt_to_phys(secondary_startup), cpu);
+ }
+
+ /*
+diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
+index 3d1054f11a8a..7911f14c2157 100644
+--- a/arch/arm/mm/proc-v7.S
++++ b/arch/arm/mm/proc-v7.S
+@@ -268,7 +268,10 @@ __v7_ca15mp_setup:
+ __v7_b15mp_setup:
+ __v7_ca17mp_setup:
+ mov r10, #0
+-1:
++1: adr r12, __v7_setup_stack @ the local stack
++ stmia r12, {r0-r5, lr} @ v7_invalidate_l1 touches r0-r6
++ bl v7_invalidate_l1
++ ldmia r12, {r0-r5, lr}
+ #ifdef CONFIG_SMP
+ ALT_SMP(mrc p15, 0, r0, c1, c0, 1)
+ ALT_UP(mov r0, #(1 << 6)) @ fake it for UP
+@@ -277,7 +280,7 @@ __v7_ca17mp_setup:
+ orreq r0, r0, r10 @ Enable CPU-specific SMP bits
+ mcreq p15, 0, r0, c1, c0, 1
+ #endif
+- b __v7_setup
++ b __v7_setup_cont
+
+ __v7_pj4b_setup:
+ #ifdef CONFIG_CPU_PJ4B
+@@ -335,10 +338,11 @@ __v7_pj4b_setup:
+
+ __v7_setup:
+ adr r12, __v7_setup_stack @ the local stack
+- stmia r12, {r0-r5, r7, r9, r11, lr}
+- bl v7_flush_dcache_louis
+- ldmia r12, {r0-r5, r7, r9, r11, lr}
++ stmia r12, {r0-r5, lr} @ v7_invalidate_l1 touches r0-r6
++ bl v7_invalidate_l1
++ ldmia r12, {r0-r5, lr}
+
++__v7_setup_cont:
+ mrc p15, 0, r0, c0, c0, 0 @ read main ID register
+ and r10, r0, #0xff000000 @ ARM?
+ teq r10, #0x41000000
+@@ -460,7 +464,7 @@ ENDPROC(__v7_setup)
+
+ .align 2
+ __v7_setup_stack:
+- .space 4 * 11 @ 11 registers
++ .space 4 * 7 @ 12 registers
+
+ __INITDATA
+
+diff --git a/arch/arm/vdso/Makefile b/arch/arm/vdso/Makefile
+index 8aa791051029..1160434eece0 100644
+--- a/arch/arm/vdso/Makefile
++++ b/arch/arm/vdso/Makefile
+@@ -6,9 +6,15 @@ obj-vdso := vgettimeofday.o datapage.o
+ targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.so.raw vdso.lds
+ obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
+
+-ccflags-y := -shared -fPIC -fno-common -fno-builtin -fno-stack-protector
+-ccflags-y += -nostdlib -Wl,-soname=linux-vdso.so.1 -DDISABLE_BRANCH_PROFILING
+-ccflags-y += -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
++ccflags-y := -fPIC -fno-common -fno-builtin -fno-stack-protector
++ccflags-y += -DDISABLE_BRANCH_PROFILING
++
++VDSO_LDFLAGS := -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1
++VDSO_LDFLAGS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
++VDSO_LDFLAGS += -nostdlib -shared
++VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
++VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--build-id)
++VDSO_LDFLAGS += $(call cc-ldoption, -fuse-ld=bfd)
+
+ obj-$(CONFIG_VDSO) += vdso.o
+ extra-$(CONFIG_VDSO) += vdso.lds
+@@ -40,10 +46,8 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
+
+ # Actual build commands
+ quiet_cmd_vdsold = VDSO $@
+- cmd_vdsold = $(CC) $(c_flags) -Wl,-T $(filter %.lds,$^) $(filter %.o,$^) \
+- $(call cc-ldoption, -Wl$(comma)--build-id) \
+- -Wl,-Bsymbolic -Wl,-z,max-page-size=4096 \
+- -Wl,-z,common-page-size=4096 -o $@
++ cmd_vdsold = $(CC) $(c_flags) $(VDSO_LDFLAGS) \
++ -Wl,-T $(filter %.lds,$^) $(filter %.o,$^) -o $@
+
+ quiet_cmd_vdsomunge = MUNGE $@
+ cmd_vdsomunge = $(objtree)/$(obj)/vdsomunge $< $@
+diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
+index cce18c85d2e8..7778453762d8 100644
+--- a/arch/arm64/kernel/perf_event.c
++++ b/arch/arm64/kernel/perf_event.c
+@@ -1318,7 +1318,7 @@ static int armpmu_device_probe(struct platform_device *pdev)
+ /* Don't bother with PPIs; they're already affine */
+ irq = platform_get_irq(pdev, 0);
+ if (irq >= 0 && irq_is_percpu(irq))
+- return 0;
++ goto out;
+
+ irqs = kcalloc(pdev->num_resources, sizeof(*irqs), GFP_KERNEL);
+ if (!irqs)
+@@ -1355,6 +1355,7 @@ static int armpmu_device_probe(struct platform_device *pdev)
+ else
+ kfree(irqs);
+
++out:
+ cpu_pmu->plat_device = pdev;
+ return 0;
+ }
+diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c
+index f02530e726f6..85c57158dcd9 100644
+--- a/arch/arm64/kvm/inject_fault.c
++++ b/arch/arm64/kvm/inject_fault.c
+@@ -168,8 +168,8 @@ void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr)
+ {
+ if (!(vcpu->arch.hcr_el2 & HCR_RW))
+ inject_abt32(vcpu, false, addr);
+-
+- inject_abt64(vcpu, false, addr);
++ else
++ inject_abt64(vcpu, false, addr);
+ }
+
+ /**
+@@ -184,8 +184,8 @@ void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr)
+ {
+ if (!(vcpu->arch.hcr_el2 & HCR_RW))
+ inject_abt32(vcpu, true, addr);
+-
+- inject_abt64(vcpu, true, addr);
++ else
++ inject_abt64(vcpu, true, addr);
+ }
+
+ /**
+@@ -198,6 +198,6 @@ void kvm_inject_undefined(struct kvm_vcpu *vcpu)
+ {
+ if (!(vcpu->arch.hcr_el2 & HCR_RW))
+ inject_undef32(vcpu);
+-
+- inject_undef64(vcpu);
++ else
++ inject_undef64(vcpu);
+ }
+diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
+index ad4d44635c76..a6f6b762c47a 100644
+--- a/arch/mips/kernel/scall64-64.S
++++ b/arch/mips/kernel/scall64-64.S
+@@ -80,7 +80,7 @@ syscall_trace_entry:
+ SAVE_STATIC
+ move s0, t2
+ move a0, sp
+- daddiu a1, v0, __NR_64_Linux
++ move a1, v0
+ jal syscall_trace_enter
+
+ bltz v0, 2f # seccomp failed? Skip syscall
+diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
+index 446cc654da56..4b2010654c46 100644
+--- a/arch/mips/kernel/scall64-n32.S
++++ b/arch/mips/kernel/scall64-n32.S
+@@ -72,7 +72,7 @@ n32_syscall_trace_entry:
+ SAVE_STATIC
+ move s0, t2
+ move a0, sp
+- daddiu a1, v0, __NR_N32_Linux
++ move a1, v0
+ jal syscall_trace_enter
+
+ bltz v0, 2f # seccomp failed? Skip syscall
+diff --git a/arch/x86/include/asm/sigcontext.h b/arch/x86/include/asm/sigcontext.h
+index 6fe6b182c998..9dfce4e0417d 100644
+--- a/arch/x86/include/asm/sigcontext.h
++++ b/arch/x86/include/asm/sigcontext.h
+@@ -57,9 +57,9 @@ struct sigcontext {
+ unsigned long ip;
+ unsigned long flags;
+ unsigned short cs;
+- unsigned short __pad2; /* Was called gs, but was always zero. */
+- unsigned short __pad1; /* Was called fs, but was always zero. */
+- unsigned short ss;
++ unsigned short gs;
++ unsigned short fs;
++ unsigned short __pad0;
+ unsigned long err;
+ unsigned long trapno;
+ unsigned long oldmask;
+diff --git a/arch/x86/include/uapi/asm/sigcontext.h b/arch/x86/include/uapi/asm/sigcontext.h
+index 16dc4e8a2cd3..d8b9f9081e86 100644
+--- a/arch/x86/include/uapi/asm/sigcontext.h
++++ b/arch/x86/include/uapi/asm/sigcontext.h
+@@ -177,24 +177,9 @@ struct sigcontext {
+ __u64 rip;
+ __u64 eflags; /* RFLAGS */
+ __u16 cs;
+-
+- /*
+- * Prior to 2.5.64 ("[PATCH] x86-64 updates for 2.5.64-bk3"),
+- * Linux saved and restored fs and gs in these slots. This
+- * was counterproductive, as fsbase and gsbase were never
+- * saved, so arch_prctl was presumably unreliable.
+- *
+- * If these slots are ever needed for any other purpose, there
+- * is some risk that very old 64-bit binaries could get
+- * confused. I doubt that many such binaries still work,
+- * though, since the same patch in 2.5.64 also removed the
+- * 64-bit set_thread_area syscall, so it appears that there is
+- * no TLS API that works in both pre- and post-2.5.64 kernels.
+- */
+- __u16 __pad2; /* Was gs. */
+- __u16 __pad1; /* Was fs. */
+-
+- __u16 ss;
++ __u16 gs;
++ __u16 fs;
++ __u16 __pad0;
+ __u64 err;
+ __u64 trapno;
+ __u64 oldmask;
+diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
+index dcb52850a28f..cde732c1b495 100644
+--- a/arch/x86/kernel/apic/apic.c
++++ b/arch/x86/kernel/apic/apic.c
+@@ -1424,7 +1424,7 @@ static inline void __x2apic_disable(void)
+ {
+ u64 msr;
+
+- if (cpu_has_apic)
++ if (!cpu_has_apic)
+ return;
+
+ rdmsrl(MSR_IA32_APICBASE, msr);
+@@ -1483,10 +1483,13 @@ void x2apic_setup(void)
+
+ static __init void x2apic_disable(void)
+ {
+- u32 x2apic_id;
++ u32 x2apic_id, state = x2apic_state;
+
+- if (x2apic_state != X2APIC_ON)
+- goto out;
++ x2apic_mode = 0;
++ x2apic_state = X2APIC_DISABLED;
++
++ if (state != X2APIC_ON)
++ return;
+
+ x2apic_id = read_apic_id();
+ if (x2apic_id >= 255)
+@@ -1494,9 +1497,6 @@ static __init void x2apic_disable(void)
+
+ __x2apic_disable();
+ register_lapic_address(mp_lapic_addr);
+-out:
+- x2apic_state = X2APIC_DISABLED;
+- x2apic_mode = 0;
+ }
+
+ static __init void x2apic_enable(void)
+diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
+index 6e338e3b1dc0..971743774248 100644
+--- a/arch/x86/kernel/process.c
++++ b/arch/x86/kernel/process.c
+@@ -453,6 +453,7 @@ static int prefer_mwait_c1_over_halt(const struct cpuinfo_x86 *c)
+ static void mwait_idle(void)
+ {
+ if (!current_set_polling_and_test()) {
++ trace_cpu_idle_rcuidle(1, smp_processor_id());
+ if (this_cpu_has(X86_BUG_CLFLUSH_MONITOR)) {
+ smp_mb(); /* quirk */
+ clflush((void *)¤t_thread_info()->flags);
+@@ -464,6 +465,7 @@ static void mwait_idle(void)
+ __sti_mwait(0, 0);
+ else
+ local_irq_enable();
++ trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id());
+ } else {
+ local_irq_enable();
+ }
+diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
+index 1ea14fd53933..e0fd5f47fbb9 100644
+--- a/arch/x86/kernel/signal.c
++++ b/arch/x86/kernel/signal.c
+@@ -93,8 +93,15 @@ int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
+ COPY(r15);
+ #endif /* CONFIG_X86_64 */
+
++#ifdef CONFIG_X86_32
+ COPY_SEG_CPL3(cs);
+ COPY_SEG_CPL3(ss);
++#else /* !CONFIG_X86_32 */
++ /* Kernel saves and restores only the CS segment register on signals,
++ * which is the bare minimum needed to allow mixed 32/64-bit code.
++ * App's signal handler can save/restore other segments if needed. */
++ COPY_SEG_CPL3(cs);
++#endif /* CONFIG_X86_32 */
+
+ get_user_ex(tmpflags, &sc->flags);
+ regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
+@@ -154,9 +161,8 @@ int setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
+ #else /* !CONFIG_X86_32 */
+ put_user_ex(regs->flags, &sc->flags);
+ put_user_ex(regs->cs, &sc->cs);
+- put_user_ex(0, &sc->__pad2);
+- put_user_ex(0, &sc->__pad1);
+- put_user_ex(regs->ss, &sc->ss);
++ put_user_ex(0, &sc->gs);
++ put_user_ex(0, &sc->fs);
+ #endif /* CONFIG_X86_32 */
+
+ put_user_ex(fpstate, &sc->fpstate);
+@@ -450,19 +456,9 @@ static int __setup_rt_frame(int sig, struct ksignal *ksig,
+
+ regs->sp = (unsigned long)frame;
+
+- /*
+- * Set up the CS and SS registers to run signal handlers in
+- * 64-bit mode, even if the handler happens to be interrupting
+- * 32-bit or 16-bit code.
+- *
+- * SS is subtle. In 64-bit mode, we don't need any particular
+- * SS descriptor, but we do need SS to be valid. It's possible
+- * that the old SS is entirely bogus -- this can happen if the
+- * signal we're trying to deliver is #GP or #SS caused by a bad
+- * SS value.
+- */
++ /* Set up the CS register to run signal handlers in 64-bit mode,
++ even if the handler happens to be interrupting 32-bit code. */
+ regs->cs = __USER_CS;
+- regs->ss = __USER_DS;
+
+ return 0;
+ }
+diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
+index e88fda867a33..484145368a24 100644
+--- a/arch/x86/xen/Kconfig
++++ b/arch/x86/xen/Kconfig
+@@ -8,7 +8,7 @@ config XEN
+ select PARAVIRT_CLOCK
+ select XEN_HAVE_PVMMU
+ depends on X86_64 || (X86_32 && X86_PAE)
+- depends on X86_TSC
++ depends on X86_LOCAL_APIC && X86_TSC
+ help
+ This is the Linux Xen port. Enabling this will allow the
+ kernel to boot in a paravirtualized environment under the
+@@ -17,7 +17,7 @@ config XEN
+ config XEN_DOM0
+ def_bool y
+ depends on XEN && PCI_XEN && SWIOTLB_XEN
+- depends on X86_LOCAL_APIC && X86_IO_APIC && ACPI && PCI
++ depends on X86_IO_APIC && ACPI && PCI
+
+ config XEN_PVHVM
+ def_bool y
+diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
+index 7322755f337a..4b6e29ac0968 100644
+--- a/arch/x86/xen/Makefile
++++ b/arch/x86/xen/Makefile
+@@ -13,13 +13,13 @@ CFLAGS_mmu.o := $(nostackp)
+ obj-y := enlighten.o setup.o multicalls.o mmu.o irq.o \
+ time.o xen-asm.o xen-asm_$(BITS).o \
+ grant-table.o suspend.o platform-pci-unplug.o \
+- p2m.o
++ p2m.o apic.o
+
+ obj-$(CONFIG_EVENT_TRACING) += trace.o
+
+ obj-$(CONFIG_SMP) += smp.o
+ obj-$(CONFIG_PARAVIRT_SPINLOCKS)+= spinlock.o
+ obj-$(CONFIG_XEN_DEBUG_FS) += debugfs.o
+-obj-$(CONFIG_XEN_DOM0) += apic.o vga.o
++obj-$(CONFIG_XEN_DOM0) += vga.o
+ obj-$(CONFIG_SWIOTLB_XEN) += pci-swiotlb-xen.o
+ obj-$(CONFIG_XEN_EFI) += efi.o
+diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
+index 9e195c683549..bef30cbb56c4 100644
+--- a/arch/x86/xen/xen-ops.h
++++ b/arch/x86/xen/xen-ops.h
+@@ -101,17 +101,15 @@ struct dom0_vga_console_info;
+
+ #ifdef CONFIG_XEN_DOM0
+ void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size);
+-void __init xen_init_apic(void);
+ #else
+ static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
+ size_t size)
+ {
+ }
+-static inline void __init xen_init_apic(void)
+-{
+-}
+ #endif
+
++void __init xen_init_apic(void);
++
+ #ifdef CONFIG_XEN_EFI
+ extern void xen_efi_init(void);
+ #else
+diff --git a/block/blk-settings.c b/block/blk-settings.c
+index 12600bfffca9..e0057d035200 100644
+--- a/block/blk-settings.c
++++ b/block/blk-settings.c
+@@ -241,8 +241,8 @@ EXPORT_SYMBOL(blk_queue_bounce_limit);
+ * Description:
+ * Enables a low level driver to set a hard upper limit,
+ * max_hw_sectors, on the size of requests. max_hw_sectors is set by
+- * the device driver based upon the combined capabilities of I/O
+- * controller and storage device.
++ * the device driver based upon the capabilities of the I/O
++ * controller.
+ *
+ * max_sectors is a soft limit imposed by the block layer for
+ * filesystem type requests. This value can be overridden on a
+diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
+index 41c99be9bd41..e0064d180f04 100644
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -694,11 +694,11 @@ static int ata_rwcmd_protocol(struct ata_taskfile *tf, struct ata_device *dev)
+ * RETURNS:
+ * Block address read from @tf.
+ */
+-u64 ata_tf_read_block(const struct ata_taskfile *tf, struct ata_device *dev)
++u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev)
+ {
+ u64 block = 0;
+
+- if (!dev || tf->flags & ATA_TFLAG_LBA) {
++ if (tf->flags & ATA_TFLAG_LBA) {
+ if (tf->flags & ATA_TFLAG_LBA48) {
+ block |= (u64)tf->hob_lbah << 40;
+ block |= (u64)tf->hob_lbam << 32;
+@@ -2147,24 +2147,6 @@ static int ata_dev_config_ncq(struct ata_device *dev,
+ return 0;
+ }
+
+-static void ata_dev_config_sense_reporting(struct ata_device *dev)
+-{
+- unsigned int err_mask;
+-
+- if (!ata_id_has_sense_reporting(dev->id))
+- return;
+-
+- if (ata_id_sense_reporting_enabled(dev->id))
+- return;
+-
+- err_mask = ata_dev_set_feature(dev, SETFEATURE_SENSE_DATA, 0x1);
+- if (err_mask) {
+- ata_dev_dbg(dev,
+- "failed to enable Sense Data Reporting, Emask 0x%x\n",
+- err_mask);
+- }
+-}
+-
+ /**
+ * ata_dev_configure - Configure the specified ATA/ATAPI device
+ * @dev: Target device to configure
+@@ -2387,7 +2369,7 @@ int ata_dev_configure(struct ata_device *dev)
+ dev->devslp_timing[i] = sata_setting[j];
+ }
+ }
+- ata_dev_config_sense_reporting(dev);
++
+ dev->cdb_len = 16;
+ }
+
+@@ -4248,6 +4230,8 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+ { "Samsung SSD 8*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
++ { "FCCT*M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
++ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+
+ /* devices that don't properly handle TRIM commands */
+ { "SuperSSpeed S238*", NULL, ATA_HORKAGE_NOTRIM, },
+diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
+index 7465031a893c..cb0508af1459 100644
+--- a/drivers/ata/libata-eh.c
++++ b/drivers/ata/libata-eh.c
+@@ -1592,8 +1592,6 @@ static int ata_eh_read_log_10h(struct ata_device *dev,
+ tf->hob_lbah = buf[10];
+ tf->nsect = buf[12];
+ tf->hob_nsect = buf[13];
+- if (ata_id_has_ncq_autosense(dev->id))
+- tf->auxiliary = buf[14] << 16 | buf[15] << 8 | buf[16];
+
+ return 0;
+ }
+@@ -1630,70 +1628,6 @@ unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key)
+ }
+
+ /**
+- * ata_eh_request_sense - perform REQUEST_SENSE_DATA_EXT
+- * @dev: device to perform REQUEST_SENSE_SENSE_DATA_EXT to
+- * @sense_buf: result sense data buffer (SCSI_SENSE_BUFFERSIZE bytes long)
+- * @dfl_sense_key: default sense key to use
+- *
+- * Perform REQUEST_SENSE_DATA_EXT after the device reported CHECK
+- * SENSE. This function is EH helper.
+- *
+- * LOCKING:
+- * Kernel thread context (may sleep).
+- *
+- * RETURNS:
+- * encoded sense data on success, 0 on failure or if sense data
+- * is not available.
+- */
+-static u32 ata_eh_request_sense(struct ata_queued_cmd *qc,
+- struct scsi_cmnd *cmd)
+-{
+- struct ata_device *dev = qc->dev;
+- struct ata_taskfile tf;
+- unsigned int err_mask;
+-
+- if (!cmd)
+- return 0;
+-
+- DPRINTK("ATA request sense\n");
+- ata_dev_warn(dev, "request sense\n");
+- if (!ata_id_sense_reporting_enabled(dev->id)) {
+- ata_dev_warn(qc->dev, "sense data reporting disabled\n");
+- return 0;
+- }
+- ata_tf_init(dev, &tf);
+-
+- tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+- tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
+- tf.command = ATA_CMD_REQ_SENSE_DATA;
+- tf.protocol = ATA_PROT_NODATA;
+-
+- err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+- /*
+- * ACS-4 states:
+- * The device may set the SENSE DATA AVAILABLE bit to one in the
+- * STATUS field and clear the ERROR bit to zero in the STATUS field
+- * to indicate that the command returned completion without an error
+- * and the sense data described in table 306 is available.
+- *
+- * IOW the 'ATA_SENSE' bit might not be set even though valid
+- * sense data is available.
+- * So check for both.
+- */
+- if ((tf.command & ATA_SENSE) ||
+- tf.lbah != 0 || tf.lbam != 0 || tf.lbal != 0) {
+- ata_scsi_set_sense(cmd, tf.lbah, tf.lbam, tf.lbal);
+- qc->flags |= ATA_QCFLAG_SENSE_VALID;
+- ata_dev_warn(dev, "sense data %02x/%02x/%02x\n",
+- tf.lbah, tf.lbam, tf.lbal);
+- } else {
+- ata_dev_warn(dev, "request sense failed stat %02x emask %x\n",
+- tf.command, err_mask);
+- }
+- return err_mask;
+-}
+-
+-/**
+ * atapi_eh_request_sense - perform ATAPI REQUEST_SENSE
+ * @dev: device to perform REQUEST_SENSE to
+ * @sense_buf: result sense data buffer (SCSI_SENSE_BUFFERSIZE bytes long)
+@@ -1855,19 +1789,6 @@ void ata_eh_analyze_ncq_error(struct ata_link *link)
+ memcpy(&qc->result_tf, &tf, sizeof(tf));
+ qc->result_tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
+ qc->err_mask |= AC_ERR_DEV | AC_ERR_NCQ;
+- if (qc->result_tf.auxiliary) {
+- char sense_key, asc, ascq;
+-
+- sense_key = (qc->result_tf.auxiliary >> 16) & 0xff;
+- asc = (qc->result_tf.auxiliary >> 8) & 0xff;
+- ascq = qc->result_tf.auxiliary & 0xff;
+- ata_dev_dbg(dev, "NCQ Autosense %02x/%02x/%02x\n",
+- sense_key, asc, ascq);
+- ata_scsi_set_sense(qc->scsicmd, sense_key, asc, ascq);
+- ata_scsi_set_sense_information(qc->scsicmd, &qc->result_tf);
+- qc->flags |= ATA_QCFLAG_SENSE_VALID;
+- }
+-
+ ehc->i.err_mask &= ~AC_ERR_DEV;
+ }
+
+@@ -1897,27 +1818,6 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
+ return ATA_EH_RESET;
+ }
+
+- /*
+- * Sense data reporting does not work if the
+- * device fault bit is set.
+- */
+- if ((stat & ATA_SENSE) && !(stat & ATA_DF) &&
+- !(qc->flags & ATA_QCFLAG_SENSE_VALID)) {
+- if (!(qc->ap->pflags & ATA_PFLAG_FROZEN)) {
+- tmp = ata_eh_request_sense(qc, qc->scsicmd);
+- if (tmp)
+- qc->err_mask |= tmp;
+- else
+- ata_scsi_set_sense_information(qc->scsicmd, tf);
+- } else {
+- ata_dev_warn(qc->dev, "sense data available but port frozen\n");
+- }
+- }
+-
+- /* Set by NCQ autosense or request sense above */
+- if (qc->flags & ATA_QCFLAG_SENSE_VALID)
+- return 0;
+-
+ if (stat & (ATA_ERR | ATA_DF))
+ qc->err_mask |= AC_ERR_DEV;
+ else
+@@ -2661,15 +2561,14 @@ static void ata_eh_link_report(struct ata_link *link)
+
+ #ifdef CONFIG_ATA_VERBOSE_ERROR
+ if (res->command & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ |
+- ATA_SENSE | ATA_ERR)) {
++ ATA_ERR)) {
+ if (res->command & ATA_BUSY)
+ ata_dev_err(qc->dev, "status: { Busy }\n");
+ else
+- ata_dev_err(qc->dev, "status: { %s%s%s%s%s}\n",
++ ata_dev_err(qc->dev, "status: { %s%s%s%s}\n",
+ res->command & ATA_DRDY ? "DRDY " : "",
+ res->command & ATA_DF ? "DF " : "",
+ res->command & ATA_DRQ ? "DRQ " : "",
+- res->command & ATA_SENSE ? "SENSE " : "",
+ res->command & ATA_ERR ? "ERR " : "");
+ }
+
+diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
+index 641a61a59e89..0d7f0da3a269 100644
+--- a/drivers/ata/libata-scsi.c
++++ b/drivers/ata/libata-scsi.c
+@@ -270,28 +270,13 @@ DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR,
+ ata_scsi_park_show, ata_scsi_park_store);
+ EXPORT_SYMBOL_GPL(dev_attr_unload_heads);
+
+-void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
++static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
+ {
+- if (!cmd)
+- return;
+-
+ cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
+
+ scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq);
+ }
+
+-void ata_scsi_set_sense_information(struct scsi_cmnd *cmd,
+- const struct ata_taskfile *tf)
+-{
+- u64 information;
+-
+- if (!cmd)
+- return;
+-
+- information = ata_tf_read_block(tf, NULL);
+- scsi_set_sense_information(cmd->sense_buffer, information);
+-}
+-
+ static ssize_t
+ ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+@@ -1792,9 +1777,7 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
+ ((cdb[2] & 0x20) || need_sense)) {
+ ata_gen_passthru_sense(qc);
+ } else {
+- if (qc->flags & ATA_QCFLAG_SENSE_VALID) {
+- cmd->result = SAM_STAT_CHECK_CONDITION;
+- } else if (!need_sense) {
++ if (!need_sense) {
+ cmd->result = SAM_STAT_GOOD;
+ } else {
+ /* TODO: decide which descriptor format to use
+diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
+index a998a175f9f1..f840ca18a7c0 100644
+--- a/drivers/ata/libata.h
++++ b/drivers/ata/libata.h
+@@ -67,8 +67,7 @@ extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev, int tag);
+ extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
+ u64 block, u32 n_block, unsigned int tf_flags,
+ unsigned int tag);
+-extern u64 ata_tf_read_block(const struct ata_taskfile *tf,
+- struct ata_device *dev);
++extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
+ extern unsigned ata_exec_internal(struct ata_device *dev,
+ struct ata_taskfile *tf, const u8 *cdb,
+ int dma_dir, void *buf, unsigned int buflen,
+@@ -138,9 +137,6 @@ extern int ata_scsi_add_hosts(struct ata_host *host,
+ struct scsi_host_template *sht);
+ extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
+ extern int ata_scsi_offline_dev(struct ata_device *dev);
+-extern void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq);
+-extern void ata_scsi_set_sense_information(struct scsi_cmnd *cmd,
+- const struct ata_taskfile *tf);
+ extern void ata_scsi_media_change_notify(struct ata_device *dev);
+ extern void ata_scsi_hotplug(struct work_struct *work);
+ extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
+diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
+index 81751a49d8bf..56486d92c4e7 100644
+--- a/drivers/base/regmap/regcache-rbtree.c
++++ b/drivers/base/regmap/regcache-rbtree.c
+@@ -296,11 +296,20 @@ static int regcache_rbtree_insert_to_block(struct regmap *map,
+ if (!blk)
+ return -ENOMEM;
+
+- present = krealloc(rbnode->cache_present,
+- BITS_TO_LONGS(blklen) * sizeof(*present), GFP_KERNEL);
+- if (!present) {
+- kfree(blk);
+- return -ENOMEM;
++ if (BITS_TO_LONGS(blklen) > BITS_TO_LONGS(rbnode->blklen)) {
++ present = krealloc(rbnode->cache_present,
++ BITS_TO_LONGS(blklen) * sizeof(*present),
++ GFP_KERNEL);
++ if (!present) {
++ kfree(blk);
++ return -ENOMEM;
++ }
++
++ memset(present + BITS_TO_LONGS(rbnode->blklen), 0,
++ (BITS_TO_LONGS(blklen) - BITS_TO_LONGS(rbnode->blklen))
++ * sizeof(*present));
++ } else {
++ present = rbnode->cache_present;
+ }
+
+ /* insert the register value in the correct place in the rbnode block */
+diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
+index 713fc9ff1149..3e9ec9523f73 100644
+--- a/drivers/block/xen-blkback/blkback.c
++++ b/drivers/block/xen-blkback/blkback.c
+@@ -362,8 +362,8 @@ static void purge_persistent_gnt(struct xen_blkif *blkif)
+ return;
+ }
+
+- if (work_pending(&blkif->persistent_purge_work)) {
+- pr_alert_ratelimited("Scheduled work from previous purge is still pending, cannot purge list\n");
++ if (work_busy(&blkif->persistent_purge_work)) {
++ pr_alert_ratelimited("Scheduled work from previous purge is still busy, cannot purge list\n");
+ return;
+ }
+
+diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
+index 2c61cf8c6f61..89c7371ab2dc 100644
+--- a/drivers/block/xen-blkfront.c
++++ b/drivers/block/xen-blkfront.c
+@@ -1118,8 +1118,10 @@ static void blkif_completion(struct blk_shadow *s, struct blkfront_info *info,
+ * Add the used indirect page back to the list of
+ * available pages for indirect grefs.
+ */
+- indirect_page = pfn_to_page(s->indirect_grants[i]->pfn);
+- list_add(&indirect_page->lru, &info->indirect_pages);
++ if (!info->feature_persistent) {
++ indirect_page = pfn_to_page(s->indirect_grants[i]->pfn);
++ list_add(&indirect_page->lru, &info->indirect_pages);
++ }
+ s->indirect_grants[i]->gref = GRANT_INVALID_REF;
+ list_add_tail(&s->indirect_grants[i]->node, &info->grants);
+ }
+diff --git a/drivers/clk/pxa/clk-pxa3xx.c b/drivers/clk/pxa/clk-pxa3xx.c
+index 4b93a1efb36d..ac03ba49e9d1 100644
+--- a/drivers/clk/pxa/clk-pxa3xx.c
++++ b/drivers/clk/pxa/clk-pxa3xx.c
+@@ -126,7 +126,7 @@ PARENTS(pxa3xx_ac97_bus) = { "ring_osc_60mhz", "ac97" };
+ PARENTS(pxa3xx_sbus) = { "ring_osc_60mhz", "system_bus" };
+ PARENTS(pxa3xx_smemcbus) = { "ring_osc_60mhz", "smemc" };
+
+-#define CKEN_AB(bit) ((CKEN_ ## bit > 31) ? &CKENA : &CKENB)
++#define CKEN_AB(bit) ((CKEN_ ## bit > 31) ? &CKENB : &CKENA)
+ #define PXA3XX_CKEN(dev_id, con_id, parents, mult_lp, div_lp, mult_hp, \
+ div_hp, bit, is_lp, flags) \
+ PXA_CKEN(dev_id, con_id, bit, parents, mult_lp, div_lp, \
+diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
+index 332c8ef8dae2..0436997e054b 100644
+--- a/drivers/crypto/caam/caamhash.c
++++ b/drivers/crypto/caam/caamhash.c
+@@ -909,13 +909,14 @@ static int ahash_final_ctx(struct ahash_request *req)
+ state->buflen_1;
+ u32 *sh_desc = ctx->sh_desc_fin, *desc;
+ dma_addr_t ptr = ctx->sh_desc_fin_dma;
+- int sec4_sg_bytes;
++ int sec4_sg_bytes, sec4_sg_src_index;
+ int digestsize = crypto_ahash_digestsize(ahash);
+ struct ahash_edesc *edesc;
+ int ret = 0;
+ int sh_len;
+
+- sec4_sg_bytes = (1 + (buflen ? 1 : 0)) * sizeof(struct sec4_sg_entry);
++ sec4_sg_src_index = 1 + (buflen ? 1 : 0);
++ sec4_sg_bytes = sec4_sg_src_index * sizeof(struct sec4_sg_entry);
+
+ /* allocate space for base edesc and hw desc commands, link tables */
+ edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN +
+@@ -942,7 +943,7 @@ static int ahash_final_ctx(struct ahash_request *req)
+ state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1,
+ buf, state->buf_dma, buflen,
+ last_buflen);
+- (edesc->sec4_sg + sec4_sg_bytes - 1)->len |= SEC4_SG_LEN_FIN;
++ (edesc->sec4_sg + sec4_sg_src_index - 1)->len |= SEC4_SG_LEN_FIN;
+
+ edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
+ sec4_sg_bytes, DMA_TO_DEVICE);
+diff --git a/drivers/crypto/nx/nx-sha256.c b/drivers/crypto/nx/nx-sha256.c
+index 08f8d5cd6334..becb738c897b 100644
+--- a/drivers/crypto/nx/nx-sha256.c
++++ b/drivers/crypto/nx/nx-sha256.c
+@@ -71,7 +71,6 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
+ struct sha256_state *sctx = shash_desc_ctx(desc);
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+ struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
+- struct nx_sg *in_sg;
+ struct nx_sg *out_sg;
+ u64 to_process = 0, leftover, total;
+ unsigned long irq_flags;
+@@ -97,7 +96,6 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
+ NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
+ NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
+
+- in_sg = nx_ctx->in_sg;
+ max_sg_len = min_t(u64, nx_ctx->ap->sglen,
+ nx_driver.of.max_sg_len/sizeof(struct nx_sg));
+ max_sg_len = min_t(u64, max_sg_len,
+@@ -114,17 +112,12 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
+ }
+
+ do {
+- /*
+- * to_process: the SHA256_BLOCK_SIZE data chunk to process in
+- * this update. This value is also restricted by the sg list
+- * limits.
+- */
+- to_process = total - to_process;
+- to_process = to_process & ~(SHA256_BLOCK_SIZE - 1);
++ int used_sgs = 0;
++ struct nx_sg *in_sg = nx_ctx->in_sg;
+
+ if (buf_len) {
+ data_len = buf_len;
+- in_sg = nx_build_sg_list(nx_ctx->in_sg,
++ in_sg = nx_build_sg_list(in_sg,
+ (u8 *) sctx->buf,
+ &data_len,
+ max_sg_len);
+@@ -133,15 +126,27 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
+ rc = -EINVAL;
+ goto out;
+ }
++ used_sgs = in_sg - nx_ctx->in_sg;
+ }
+
++ /* to_process: SHA256_BLOCK_SIZE aligned chunk to be
++ * processed in this iteration. This value is restricted
++ * by sg list limits and number of sgs we already used
++ * for leftover data. (see above)
++ * In ideal case, we could allow NX_PAGE_SIZE * max_sg_len,
++ * but because data may not be aligned, we need to account
++ * for that too. */
++ to_process = min_t(u64, total,
++ (max_sg_len - 1 - used_sgs) * NX_PAGE_SIZE);
++ to_process = to_process & ~(SHA256_BLOCK_SIZE - 1);
++
+ data_len = to_process - buf_len;
+ in_sg = nx_build_sg_list(in_sg, (u8 *) data,
+ &data_len, max_sg_len);
+
+ nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
+
+- to_process = (data_len + buf_len);
++ to_process = data_len + buf_len;
+ leftover = total - to_process;
+
+ /*
+diff --git a/drivers/crypto/nx/nx-sha512.c b/drivers/crypto/nx/nx-sha512.c
+index aff0fe58eac0..b6e183d58d73 100644
+--- a/drivers/crypto/nx/nx-sha512.c
++++ b/drivers/crypto/nx/nx-sha512.c
+@@ -71,7 +71,6 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+ struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
+- struct nx_sg *in_sg;
+ struct nx_sg *out_sg;
+ u64 to_process, leftover = 0, total;
+ unsigned long irq_flags;
+@@ -97,7 +96,6 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
+ NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
+ NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
+
+- in_sg = nx_ctx->in_sg;
+ max_sg_len = min_t(u64, nx_ctx->ap->sglen,
+ nx_driver.of.max_sg_len/sizeof(struct nx_sg));
+ max_sg_len = min_t(u64, max_sg_len,
+@@ -114,18 +112,12 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
+ }
+
+ do {
+- /*
+- * to_process: the SHA512_BLOCK_SIZE data chunk to process in
+- * this update. This value is also restricted by the sg list
+- * limits.
+- */
+- to_process = total - leftover;
+- to_process = to_process & ~(SHA512_BLOCK_SIZE - 1);
+- leftover = total - to_process;
++ int used_sgs = 0;
++ struct nx_sg *in_sg = nx_ctx->in_sg;
+
+ if (buf_len) {
+ data_len = buf_len;
+- in_sg = nx_build_sg_list(nx_ctx->in_sg,
++ in_sg = nx_build_sg_list(in_sg,
+ (u8 *) sctx->buf,
+ &data_len, max_sg_len);
+
+@@ -133,8 +125,20 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
+ rc = -EINVAL;
+ goto out;
+ }
++ used_sgs = in_sg - nx_ctx->in_sg;
+ }
+
++ /* to_process: SHA512_BLOCK_SIZE aligned chunk to be
++ * processed in this iteration. This value is restricted
++ * by sg list limits and number of sgs we already used
++ * for leftover data. (see above)
++ * In ideal case, we could allow NX_PAGE_SIZE * max_sg_len,
++ * but because data may not be aligned, we need to account
++ * for that too. */
++ to_process = min_t(u64, total,
++ (max_sg_len - 1 - used_sgs) * NX_PAGE_SIZE);
++ to_process = to_process & ~(SHA512_BLOCK_SIZE - 1);
++
+ data_len = to_process - buf_len;
+ in_sg = nx_build_sg_list(in_sg, (u8 *) data,
+ &data_len, max_sg_len);
+@@ -146,7 +150,7 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
+ goto out;
+ }
+
+- to_process = (data_len + buf_len);
++ to_process = data_len + buf_len;
+ leftover = total - to_process;
+
+ /*
+diff --git a/drivers/edac/ppc4xx_edac.c b/drivers/edac/ppc4xx_edac.c
+index 3515b381c131..711d8ad74f11 100644
+--- a/drivers/edac/ppc4xx_edac.c
++++ b/drivers/edac/ppc4xx_edac.c
+@@ -920,7 +920,7 @@ static int ppc4xx_edac_init_csrows(struct mem_ctl_info *mci, u32 mcopt1)
+ */
+
+ for (row = 0; row < mci->nr_csrows; row++) {
+- struct csrow_info *csi = &mci->csrows[row];
++ struct csrow_info *csi = mci->csrows[row];
+
+ /*
+ * Get the configuration settings for this
+diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+index 60b0c13d7ff5..aebc4595afa0 100644
+--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
++++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+@@ -559,7 +559,7 @@ static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev)
+ return 0;
+ }
+
+-#ifdef CONFIG_PM
++#ifdef CONFIG_PM_SLEEP
+ static int atmel_hlcdc_dc_drm_suspend(struct device *dev)
+ {
+ struct drm_device *drm_dev = dev_get_drvdata(dev);
+diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
+index d714a4b5711e..b1fe32b119ef 100644
+--- a/drivers/gpu/drm/i915/intel_dp.c
++++ b/drivers/gpu/drm/i915/intel_dp.c
+@@ -1150,6 +1150,19 @@ intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates)
+ return (intel_dp_max_link_bw(intel_dp) >> 3) + 1;
+ }
+
++static bool intel_dp_source_supports_hbr2(struct drm_device *dev)
++{
++ /* WaDisableHBR2:skl */
++ if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0)
++ return false;
++
++ if ((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || IS_BROADWELL(dev) ||
++ (INTEL_INFO(dev)->gen >= 9))
++ return true;
++ else
++ return false;
++}
++
+ static int
+ intel_dp_source_rates(struct drm_device *dev, const int **source_rates)
+ {
+@@ -1163,11 +1176,8 @@ intel_dp_source_rates(struct drm_device *dev, const int **source_rates)
+
+ *source_rates = default_rates;
+
+- if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0)
+- /* WaDisableHBR2:skl */
+- return (DP_LINK_BW_2_7 >> 3) + 1;
+- else if (INTEL_INFO(dev)->gen >= 8 ||
+- (IS_HASWELL(dev) && !IS_HSW_ULX(dev)))
++ /* This depends on the fact that 5.4 is last value in the array */
++ if (intel_dp_source_supports_hbr2(dev))
+ return (DP_LINK_BW_5_4 >> 3) + 1;
+ else
+ return (DP_LINK_BW_2_7 >> 3) + 1;
+@@ -3783,10 +3793,15 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
+ }
+ }
+
+- /* Training Pattern 3 support, both source and sink */
++ /* Training Pattern 3 support, Intel platforms that support HBR2 alone
++ * have support for TP3 hence that check is used along with dpcd check
++ * to ensure TP3 can be enabled.
++ * SKL < B0: due it's WaDisableHBR2 is the only exception where TP3 is
++ * supported but still not enabled.
++ */
+ if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 &&
+ intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED &&
+- (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)) {
++ intel_dp_source_supports_hbr2(dev)) {
+ intel_dp->use_tps3 = true;
+ DRM_DEBUG_KMS("Displayport TPS3 supported\n");
+ } else
+diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
+index 424e62197787..9ab7c1c758ae 100644
+--- a/drivers/gpu/drm/i915/intel_lrc.c
++++ b/drivers/gpu/drm/i915/intel_lrc.c
+@@ -848,6 +848,8 @@ static int intel_lr_context_pin(struct intel_engine_cs *ring,
+ ret = intel_pin_and_map_ringbuffer_obj(ring->dev, ringbuf);
+ if (ret)
+ goto unpin_ctx_obj;
++
++ ctx_obj->dirty = true;
+ }
+
+ return ret;
+diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+index 654c8daeb5ab..97ad3bcb99a7 100644
+--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+@@ -2492,7 +2492,7 @@ int vmw_execbuf_process(struct drm_file *file_priv,
+ ret = ttm_eu_reserve_buffers(&ticket, &sw_context->validate_nodes,
+ true, NULL);
+ if (unlikely(ret != 0))
+- goto out_err;
++ goto out_err_nores;
+
+ ret = vmw_validate_buffers(dev_priv, sw_context);
+ if (unlikely(ret != 0))
+@@ -2536,6 +2536,7 @@ int vmw_execbuf_process(struct drm_file *file_priv,
+ vmw_resource_relocations_free(&sw_context->res_relocations);
+
+ vmw_fifo_commit(dev_priv, command_size);
++ mutex_unlock(&dev_priv->binding_mutex);
+
+ vmw_query_bo_switch_commit(dev_priv, sw_context);
+ ret = vmw_execbuf_fence_commands(file_priv, dev_priv,
+@@ -2551,7 +2552,6 @@ int vmw_execbuf_process(struct drm_file *file_priv,
+ DRM_ERROR("Fence submission error. Syncing.\n");
+
+ vmw_resource_list_unreserve(&sw_context->resource_list, false);
+- mutex_unlock(&dev_priv->binding_mutex);
+
+ ttm_eu_fence_buffer_objects(&ticket, &sw_context->validate_nodes,
+ (void *) fence);
+diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
+index 008e89bf6f3c..32d52d29cc68 100644
+--- a/drivers/hid/hid-input.c
++++ b/drivers/hid/hid-input.c
+@@ -462,12 +462,15 @@ out:
+
+ static void hidinput_cleanup_battery(struct hid_device *dev)
+ {
++ const struct power_supply_desc *psy_desc;
++
+ if (!dev->battery)
+ return;
+
++ psy_desc = dev->battery->desc;
+ power_supply_unregister(dev->battery);
+- kfree(dev->battery->desc->name);
+- kfree(dev->battery->desc);
++ kfree(psy_desc->name);
++ kfree(psy_desc);
+ dev->battery = NULL;
+ }
+ #else /* !CONFIG_HID_BATTERY_STRENGTH */
+diff --git a/drivers/hid/hid-uclogic.c b/drivers/hid/hid-uclogic.c
+index 94167310e15a..b905d501e752 100644
+--- a/drivers/hid/hid-uclogic.c
++++ b/drivers/hid/hid-uclogic.c
+@@ -858,7 +858,7 @@ static int uclogic_tablet_enable(struct hid_device *hdev)
+ for (p = drvdata->rdesc;
+ p <= drvdata->rdesc + drvdata->rsize - 4;) {
+ if (p[0] == 0xFE && p[1] == 0xED && p[2] == 0x1D &&
+- p[3] < sizeof(params)) {
++ p[3] < ARRAY_SIZE(params)) {
+ v = params[p[3]];
+ put_unaligned(cpu_to_le32(v), (s32 *)p);
+ p += 4;
+diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
+index 097d7216d98e..c6dc644aa580 100644
+--- a/drivers/input/keyboard/gpio_keys_polled.c
++++ b/drivers/input/keyboard/gpio_keys_polled.c
+@@ -246,7 +246,7 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
+ * convert it to descriptor.
+ */
+ if (!button->gpiod && gpio_is_valid(button->gpio)) {
+- unsigned flags = 0;
++ unsigned flags = GPIOF_IN;
+
+ if (button->active_low)
+ flags |= GPIOF_ACTIVE_LOW;
+diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
+index 692fe2bc8197..c12bb93334ff 100644
+--- a/drivers/irqchip/irq-crossbar.c
++++ b/drivers/irqchip/irq-crossbar.c
+@@ -68,7 +68,9 @@ static struct irq_chip crossbar_chip = {
+ .irq_mask = irq_chip_mask_parent,
+ .irq_unmask = irq_chip_unmask_parent,
+ .irq_retrigger = irq_chip_retrigger_hierarchy,
+- .irq_set_wake = irq_chip_set_wake_parent,
++ .irq_set_type = irq_chip_set_type_parent,
++ .flags = IRQCHIP_MASK_ON_SUSPEND |
++ IRQCHIP_SKIP_SET_WAKE,
+ #ifdef CONFIG_SMP
+ .irq_set_affinity = irq_chip_set_affinity_parent,
+ #endif
+diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
+index 79f694120ddf..cde1d6749017 100644
+--- a/drivers/md/dm-thin-metadata.c
++++ b/drivers/md/dm-thin-metadata.c
+@@ -1295,8 +1295,8 @@ static int __release_metadata_snap(struct dm_pool_metadata *pmd)
+ return r;
+
+ disk_super = dm_block_data(copy);
+- dm_sm_dec_block(pmd->metadata_sm, le64_to_cpu(disk_super->data_mapping_root));
+- dm_sm_dec_block(pmd->metadata_sm, le64_to_cpu(disk_super->device_details_root));
++ dm_btree_del(&pmd->info, le64_to_cpu(disk_super->data_mapping_root));
++ dm_btree_del(&pmd->details_info, le64_to_cpu(disk_super->device_details_root));
+ dm_sm_dec_block(pmd->metadata_sm, held_root);
+
+ return dm_tm_unlock(pmd->tm, copy);
+diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
+index 6ca6dfab50eb..6523903e15fe 100644
+--- a/drivers/mfd/arizona-core.c
++++ b/drivers/mfd/arizona-core.c
+@@ -912,10 +912,6 @@ int arizona_dev_init(struct arizona *arizona)
+ arizona->pdata.gpio_defaults[i]);
+ }
+
+- pm_runtime_set_autosuspend_delay(arizona->dev, 100);
+- pm_runtime_use_autosuspend(arizona->dev);
+- pm_runtime_enable(arizona->dev);
+-
+ /* Chip default */
+ if (!arizona->pdata.clk32k_src)
+ arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
+@@ -1012,11 +1008,17 @@ int arizona_dev_init(struct arizona *arizona)
+ arizona->pdata.spk_fmt[i]);
+ }
+
++ pm_runtime_set_active(arizona->dev);
++ pm_runtime_enable(arizona->dev);
++
+ /* Set up for interrupts */
+ ret = arizona_irq_init(arizona);
+ if (ret != 0)
+ goto err_reset;
+
++ pm_runtime_set_autosuspend_delay(arizona->dev, 100);
++ pm_runtime_use_autosuspend(arizona->dev);
++
+ arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
+ arizona_clkgen_err, arizona);
+ arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
+@@ -1045,10 +1047,6 @@ int arizona_dev_init(struct arizona *arizona)
+ goto err_irq;
+ }
+
+-#ifdef CONFIG_PM
+- regulator_disable(arizona->dcvdd);
+-#endif
+-
+ return 0;
+
+ err_irq:
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb.c b/drivers/net/can/usb/peak_usb/pcan_usb.c
+index 72427f21edff..edfec540c893 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb.c
+@@ -855,6 +855,18 @@ static int pcan_usb_probe(struct usb_interface *intf)
+ /*
+ * describe the PCAN-USB adapter
+ */
++static const struct can_bittiming_const pcan_usb_const = {
++ .name = "pcan_usb",
++ .tseg1_min = 1,
++ .tseg1_max = 16,
++ .tseg2_min = 1,
++ .tseg2_max = 8,
++ .sjw_max = 4,
++ .brp_min = 1,
++ .brp_max = 64,
++ .brp_inc = 1,
++};
++
+ const struct peak_usb_adapter pcan_usb = {
+ .name = "PCAN-USB",
+ .device_id = PCAN_USB_PRODUCT_ID,
+@@ -863,17 +875,7 @@ const struct peak_usb_adapter pcan_usb = {
+ .clock = {
+ .freq = PCAN_USB_CRYSTAL_HZ / 2 ,
+ },
+- .bittiming_const = {
+- .name = "pcan_usb",
+- .tseg1_min = 1,
+- .tseg1_max = 16,
+- .tseg2_min = 1,
+- .tseg2_max = 8,
+- .sjw_max = 4,
+- .brp_min = 1,
+- .brp_max = 64,
+- .brp_inc = 1,
+- },
++ .bittiming_const = &pcan_usb_const,
+
+ /* size of device private data */
+ .sizeof_dev_private = sizeof(struct pcan_usb),
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+index 7921cff93a63..5a2e341a6d1e 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+@@ -792,9 +792,9 @@ static int peak_usb_create_dev(const struct peak_usb_adapter *peak_usb_adapter,
+ dev->ep_msg_out = peak_usb_adapter->ep_msg_out[ctrl_idx];
+
+ dev->can.clock = peak_usb_adapter->clock;
+- dev->can.bittiming_const = &peak_usb_adapter->bittiming_const;
++ dev->can.bittiming_const = peak_usb_adapter->bittiming_const;
+ dev->can.do_set_bittiming = peak_usb_set_bittiming;
+- dev->can.data_bittiming_const = &peak_usb_adapter->data_bittiming_const;
++ dev->can.data_bittiming_const = peak_usb_adapter->data_bittiming_const;
+ dev->can.do_set_data_bittiming = peak_usb_set_data_bittiming;
+ dev->can.do_set_mode = peak_usb_set_mode;
+ dev->can.do_get_berr_counter = peak_usb_adapter->do_get_berr_counter;
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.h b/drivers/net/can/usb/peak_usb/pcan_usb_core.h
+index 9e624f05ad4d..506fe506c9d3 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.h
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.h
+@@ -48,8 +48,8 @@ struct peak_usb_adapter {
+ u32 device_id;
+ u32 ctrlmode_supported;
+ struct can_clock clock;
+- const struct can_bittiming_const bittiming_const;
+- const struct can_bittiming_const data_bittiming_const;
++ const struct can_bittiming_const * const bittiming_const;
++ const struct can_bittiming_const * const data_bittiming_const;
+ unsigned int ctrl_count;
+
+ int (*intf_probe)(struct usb_interface *intf);
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+index 09d14e70abd7..ce44a033f63b 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+@@ -990,6 +990,30 @@ static void pcan_usb_fd_free(struct peak_usb_device *dev)
+ }
+
+ /* describes the PCAN-USB FD adapter */
++static const struct can_bittiming_const pcan_usb_fd_const = {
++ .name = "pcan_usb_fd",
++ .tseg1_min = 1,
++ .tseg1_max = 64,
++ .tseg2_min = 1,
++ .tseg2_max = 16,
++ .sjw_max = 16,
++ .brp_min = 1,
++ .brp_max = 1024,
++ .brp_inc = 1,
++};
++
++static const struct can_bittiming_const pcan_usb_fd_data_const = {
++ .name = "pcan_usb_fd",
++ .tseg1_min = 1,
++ .tseg1_max = 16,
++ .tseg2_min = 1,
++ .tseg2_max = 8,
++ .sjw_max = 4,
++ .brp_min = 1,
++ .brp_max = 1024,
++ .brp_inc = 1,
++};
++
+ const struct peak_usb_adapter pcan_usb_fd = {
+ .name = "PCAN-USB FD",
+ .device_id = PCAN_USBFD_PRODUCT_ID,
+@@ -999,28 +1023,8 @@ const struct peak_usb_adapter pcan_usb_fd = {
+ .clock = {
+ .freq = PCAN_UFD_CRYSTAL_HZ,
+ },
+- .bittiming_const = {
+- .name = "pcan_usb_fd",
+- .tseg1_min = 1,
+- .tseg1_max = 64,
+- .tseg2_min = 1,
+- .tseg2_max = 16,
+- .sjw_max = 16,
+- .brp_min = 1,
+- .brp_max = 1024,
+- .brp_inc = 1,
+- },
+- .data_bittiming_const = {
+- .name = "pcan_usb_fd",
+- .tseg1_min = 1,
+- .tseg1_max = 16,
+- .tseg2_min = 1,
+- .tseg2_max = 8,
+- .sjw_max = 4,
+- .brp_min = 1,
+- .brp_max = 1024,
+- .brp_inc = 1,
+- },
++ .bittiming_const = &pcan_usb_fd_const,
++ .data_bittiming_const = &pcan_usb_fd_data_const,
+
+ /* size of device private data */
+ .sizeof_dev_private = sizeof(struct pcan_usb_fd_device),
+@@ -1058,6 +1062,30 @@ const struct peak_usb_adapter pcan_usb_fd = {
+ };
+
+ /* describes the PCAN-USB Pro FD adapter */
++static const struct can_bittiming_const pcan_usb_pro_fd_const = {
++ .name = "pcan_usb_pro_fd",
++ .tseg1_min = 1,
++ .tseg1_max = 64,
++ .tseg2_min = 1,
++ .tseg2_max = 16,
++ .sjw_max = 16,
++ .brp_min = 1,
++ .brp_max = 1024,
++ .brp_inc = 1,
++};
++
++static const struct can_bittiming_const pcan_usb_pro_fd_data_const = {
++ .name = "pcan_usb_pro_fd",
++ .tseg1_min = 1,
++ .tseg1_max = 16,
++ .tseg2_min = 1,
++ .tseg2_max = 8,
++ .sjw_max = 4,
++ .brp_min = 1,
++ .brp_max = 1024,
++ .brp_inc = 1,
++};
++
+ const struct peak_usb_adapter pcan_usb_pro_fd = {
+ .name = "PCAN-USB Pro FD",
+ .device_id = PCAN_USBPROFD_PRODUCT_ID,
+@@ -1067,28 +1095,8 @@ const struct peak_usb_adapter pcan_usb_pro_fd = {
+ .clock = {
+ .freq = PCAN_UFD_CRYSTAL_HZ,
+ },
+- .bittiming_const = {
+- .name = "pcan_usb_pro_fd",
+- .tseg1_min = 1,
+- .tseg1_max = 64,
+- .tseg2_min = 1,
+- .tseg2_max = 16,
+- .sjw_max = 16,
+- .brp_min = 1,
+- .brp_max = 1024,
+- .brp_inc = 1,
+- },
+- .data_bittiming_const = {
+- .name = "pcan_usb_pro_fd",
+- .tseg1_min = 1,
+- .tseg1_max = 16,
+- .tseg2_min = 1,
+- .tseg2_max = 8,
+- .sjw_max = 4,
+- .brp_min = 1,
+- .brp_max = 1024,
+- .brp_inc = 1,
+- },
++ .bittiming_const = &pcan_usb_pro_fd_const,
++ .data_bittiming_const = &pcan_usb_pro_fd_data_const,
+
+ /* size of device private data */
+ .sizeof_dev_private = sizeof(struct pcan_usb_fd_device),
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
+index dec51717635e..a5ad2e6aa73a 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
+@@ -1004,6 +1004,18 @@ int pcan_usb_pro_probe(struct usb_interface *intf)
+ /*
+ * describe the PCAN-USB Pro adapter
+ */
++static const struct can_bittiming_const pcan_usb_pro_const = {
++ .name = "pcan_usb_pro",
++ .tseg1_min = 1,
++ .tseg1_max = 16,
++ .tseg2_min = 1,
++ .tseg2_max = 8,
++ .sjw_max = 4,
++ .brp_min = 1,
++ .brp_max = 1024,
++ .brp_inc = 1,
++};
++
+ const struct peak_usb_adapter pcan_usb_pro = {
+ .name = "PCAN-USB Pro",
+ .device_id = PCAN_USBPRO_PRODUCT_ID,
+@@ -1012,17 +1024,7 @@ const struct peak_usb_adapter pcan_usb_pro = {
+ .clock = {
+ .freq = PCAN_USBPRO_CRYSTAL_HZ,
+ },
+- .bittiming_const = {
+- .name = "pcan_usb_pro",
+- .tseg1_min = 1,
+- .tseg1_max = 16,
+- .tseg2_min = 1,
+- .tseg2_max = 8,
+- .sjw_max = 4,
+- .brp_min = 1,
+- .brp_max = 1024,
+- .brp_inc = 1,
+- },
++ .bittiming_const = &pcan_usb_pro_const,
+
+ /* size of device private data */
+ .sizeof_dev_private = sizeof(struct pcan_usb_pro_device),
+diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
+index 37e6a6f91487..699a4802835f 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
++++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
+@@ -457,10 +457,16 @@ static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave)
+ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000)
+ iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
+ APMG_PCIDEV_STT_VAL_WAKE_ME);
+- else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
++ else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
++ iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
++ CSR_RESET_LINK_PWR_MGMT_DISABLED);
+ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+ CSR_HW_IF_CONFIG_REG_PREPARE |
+ CSR_HW_IF_CONFIG_REG_ENABLE_PME);
++ mdelay(1);
++ iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
++ CSR_RESET_LINK_PWR_MGMT_DISABLED);
++ }
+ mdelay(5);
+ }
+
+@@ -555,6 +561,10 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
+ if (ret >= 0)
+ return 0;
+
++ iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
++ CSR_RESET_LINK_PWR_MGMT_DISABLED);
++ msleep(1);
++
+ for (iter = 0; iter < 10; iter++) {
+ /* If HW is not ready, prepare the conditions to check again */
+ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+@@ -562,8 +572,10 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
+
+ do {
+ ret = iwl_pcie_set_hw_ready(trans);
+- if (ret >= 0)
+- return 0;
++ if (ret >= 0) {
++ ret = 0;
++ goto out;
++ }
+
+ usleep_range(200, 1000);
+ t += 200;
+@@ -573,6 +585,10 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
+
+ IWL_ERR(trans, "Couldn't prepare the card\n");
+
++out:
++ iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
++ CSR_RESET_LINK_PWR_MGMT_DISABLED);
++
+ return ret;
+ }
+
+diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
+index b6cc9ff47fc2..1c6788aecc62 100644
+--- a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
++++ b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
+@@ -172,6 +172,7 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+ (struct rsi_91x_sdiodev *)adapter->rsi_dev;
+ u32 len;
+ u32 num_blocks;
++ const u8 *fw;
+ const struct firmware *fw_entry = NULL;
+ u32 block_size = dev->tx_blk_size;
+ int status = 0;
+@@ -200,6 +201,10 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+ return status;
+ }
+
++ /* Copy firmware into DMA-accessible memory */
++ fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
++ if (!fw)
++ return -ENOMEM;
+ len = fw_entry->size;
+
+ if (len % 4)
+@@ -210,7 +215,8 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+ rsi_dbg(INIT_ZONE, "%s: Instruction size:%d\n", __func__, len);
+ rsi_dbg(INIT_ZONE, "%s: num blocks: %d\n", __func__, num_blocks);
+
+- status = rsi_copy_to_card(common, fw_entry->data, len, num_blocks);
++ status = rsi_copy_to_card(common, fw, len, num_blocks);
++ kfree(fw);
+ release_firmware(fw_entry);
+ return status;
+ }
+diff --git a/drivers/net/wireless/rsi/rsi_91x_usb_ops.c b/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
+index 1106ce76707e..30c2cf7fa93b 100644
+--- a/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
++++ b/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
+@@ -146,7 +146,10 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+ return status;
+ }
+
++ /* Copy firmware into DMA-accessible memory */
+ fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
++ if (!fw)
++ return -ENOMEM;
+ len = fw_entry->size;
+
+ if (len % 4)
+@@ -158,6 +161,7 @@ static int rsi_load_ta_instructions(struct rsi_common *common)
+ rsi_dbg(INIT_ZONE, "%s: num blocks: %d\n", __func__, num_blocks);
+
+ status = rsi_copy_to_card(common, fw, len, num_blocks);
++ kfree(fw);
+ release_firmware(fw_entry);
+ return status;
+ }
+diff --git a/drivers/net/wireless/rtlwifi/core.c b/drivers/net/wireless/rtlwifi/core.c
+index 3b3a88b53b11..585d0883c7e5 100644
+--- a/drivers/net/wireless/rtlwifi/core.c
++++ b/drivers/net/wireless/rtlwifi/core.c
+@@ -1015,9 +1015,12 @@ static void send_beacon_frame(struct ieee80211_hw *hw,
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct sk_buff *skb = ieee80211_beacon_get(hw, vif);
++ struct rtl_tcb_desc tcb_desc;
+
+- if (skb)
+- rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, NULL);
++ if (skb) {
++ memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
++ rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc);
++ }
+ }
+
+ static void rtl_op_bss_info_changed(struct ieee80211_hw *hw,
+diff --git a/drivers/net/wireless/rtlwifi/rtl8723be/sw.c b/drivers/net/wireless/rtlwifi/rtl8723be/sw.c
+index 1017f02d7bf7..7bf88d9dcdc3 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8723be/sw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8723be/sw.c
+@@ -385,6 +385,7 @@ module_param_named(debug, rtl8723be_mod_params.debug, int, 0444);
+ module_param_named(ips, rtl8723be_mod_params.inactiveps, bool, 0444);
+ module_param_named(swlps, rtl8723be_mod_params.swctrl_lps, bool, 0444);
+ module_param_named(fwlps, rtl8723be_mod_params.fwctrl_lps, bool, 0444);
++module_param_named(msi, rtl8723be_mod_params.msi_support, bool, 0444);
+ module_param_named(disable_watchdog, rtl8723be_mod_params.disable_watchdog,
+ bool, 0444);
+ MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
+diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
+index 73de4efcbe6e..944f50015ed0 100644
+--- a/drivers/pci/Kconfig
++++ b/drivers/pci/Kconfig
+@@ -2,7 +2,7 @@
+ # PCI configuration
+ #
+ config PCI_BUS_ADDR_T_64BIT
+- def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT)
++ def_bool y if (ARCH_DMA_ADDR_T_64BIT || (64BIT && !PARISC))
+ depends on PCI
+
+ config PCI_MSI
+diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
+index 26270c351624..ce129e595b55 100644
+--- a/drivers/scsi/fnic/fnic.h
++++ b/drivers/scsi/fnic/fnic.h
+@@ -39,7 +39,7 @@
+
+ #define DRV_NAME "fnic"
+ #define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
+-#define DRV_VERSION "1.6.0.17"
++#define DRV_VERSION "1.6.0.17a"
+ #define PFX DRV_NAME ": "
+ #define DFX DRV_NAME "%d: "
+
+diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
+index 155b286f1a9d..25436cd2860c 100644
+--- a/drivers/scsi/fnic/fnic_scsi.c
++++ b/drivers/scsi/fnic/fnic_scsi.c
+@@ -425,6 +425,7 @@ static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_
+ unsigned long ptr;
+ struct fc_rport_priv *rdata;
+ spinlock_t *io_lock = NULL;
++ int io_lock_acquired = 0;
+
+ if (unlikely(fnic_chk_state_flags_locked(fnic, FNIC_FLAGS_IO_BLOCKED)))
+ return SCSI_MLQUEUE_HOST_BUSY;
+@@ -518,6 +519,7 @@ static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_
+ spin_lock_irqsave(io_lock, flags);
+
+ /* initialize rest of io_req */
++ io_lock_acquired = 1;
+ io_req->port_id = rport->port_id;
+ io_req->start_time = jiffies;
+ CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING;
+@@ -571,7 +573,7 @@ out:
+ (((u64)CMD_FLAGS(sc) >> 32) | CMD_STATE(sc)));
+
+ /* if only we issued IO, will we have the io lock */
+- if (CMD_FLAGS(sc) & FNIC_IO_INITIALIZED)
++ if (io_lock_acquired)
+ spin_unlock_irqrestore(io_lock, flags);
+
+ atomic_dec(&fnic->in_flight);
+diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
+index 1b3a09473452..30f9ef0c0d4f 100644
+--- a/drivers/scsi/libfc/fc_exch.c
++++ b/drivers/scsi/libfc/fc_exch.c
+@@ -733,8 +733,6 @@ static bool fc_invoke_resp(struct fc_exch *ep, struct fc_seq *sp,
+ if (resp) {
+ resp(sp, fp, arg);
+ res = true;
+- } else if (!IS_ERR(fp)) {
+- fc_frame_free(fp);
+ }
+
+ spin_lock_bh(&ep->ex_lock);
+@@ -1596,7 +1594,8 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
+ * If new exch resp handler is valid then call that
+ * first.
+ */
+- fc_invoke_resp(ep, sp, fp);
++ if (!fc_invoke_resp(ep, sp, fp))
++ fc_frame_free(fp);
+
+ fc_exch_release(ep);
+ return;
+@@ -1695,7 +1694,8 @@ static void fc_exch_abts_resp(struct fc_exch *ep, struct fc_frame *fp)
+ fc_exch_hold(ep);
+ if (!rc)
+ fc_exch_delete(ep);
+- fc_invoke_resp(ep, sp, fp);
++ if (!fc_invoke_resp(ep, sp, fp))
++ fc_frame_free(fp);
+ if (has_rec)
+ fc_exch_timer_set(ep, ep->r_a_tov);
+ fc_exch_release(ep);
+diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
+index c6795941b45d..2d5909c4685c 100644
+--- a/drivers/scsi/libfc/fc_fcp.c
++++ b/drivers/scsi/libfc/fc_fcp.c
+@@ -1039,11 +1039,26 @@ restart:
+ fc_fcp_pkt_hold(fsp);
+ spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
+
+- if (!fc_fcp_lock_pkt(fsp)) {
++ spin_lock_bh(&fsp->scsi_pkt_lock);
++ if (!(fsp->state & FC_SRB_COMPL)) {
++ fsp->state |= FC_SRB_COMPL;
++ /*
++ * TODO: dropping scsi_pkt_lock and then reacquiring
++ * again around fc_fcp_cleanup_cmd() is required,
++ * since fc_fcp_cleanup_cmd() calls into
++ * fc_seq_set_resp() and that func preempts cpu using
++ * schedule. May be schedule and related code should be
++ * removed instead of unlocking here to avoid scheduling
++ * while atomic bug.
++ */
++ spin_unlock_bh(&fsp->scsi_pkt_lock);
++
+ fc_fcp_cleanup_cmd(fsp, error);
++
++ spin_lock_bh(&fsp->scsi_pkt_lock);
+ fc_io_compl(fsp);
+- fc_fcp_unlock_pkt(fsp);
+ }
++ spin_unlock_bh(&fsp->scsi_pkt_lock);
+
+ fc_fcp_pkt_release(fsp);
+ spin_lock_irqsave(&si->scsi_queue_lock, flags);
+diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
+index 8053f24f0349..98d9bb6ff725 100644
+--- a/drivers/scsi/libiscsi.c
++++ b/drivers/scsi/libiscsi.c
+@@ -2941,10 +2941,10 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
+ {
+ struct iscsi_conn *conn = cls_conn->dd_data;
+ struct iscsi_session *session = conn->session;
+- unsigned long flags;
+
+ del_timer_sync(&conn->transport_timer);
+
++ mutex_lock(&session->eh_mutex);
+ spin_lock_bh(&session->frwd_lock);
+ conn->c_stage = ISCSI_CONN_CLEANUP_WAIT;
+ if (session->leadconn == conn) {
+@@ -2956,28 +2956,6 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
+ }
+ spin_unlock_bh(&session->frwd_lock);
+
+- /*
+- * Block until all in-progress commands for this connection
+- * time out or fail.
+- */
+- for (;;) {
+- spin_lock_irqsave(session->host->host_lock, flags);
+- if (!atomic_read(&session->host->host_busy)) { /* OK for ERL == 0 */
+- spin_unlock_irqrestore(session->host->host_lock, flags);
+- break;
+- }
+- spin_unlock_irqrestore(session->host->host_lock, flags);
+- msleep_interruptible(500);
+- iscsi_conn_printk(KERN_INFO, conn, "iscsi conn_destroy(): "
+- "host_busy %d host_failed %d\n",
+- atomic_read(&session->host->host_busy),
+- session->host->host_failed);
+- /*
+- * force eh_abort() to unblock
+- */
+- wake_up(&conn->ehwait);
+- }
+-
+ /* flush queued up work because we free the connection below */
+ iscsi_suspend_tx(conn);
+
+@@ -2994,6 +2972,7 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
+ if (session->leadconn == conn)
+ session->leadconn = NULL;
+ spin_unlock_bh(&session->frwd_lock);
++ mutex_unlock(&session->eh_mutex);
+
+ iscsi_destroy_conn(cls_conn);
+ }
+diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
+index 59c31bf88d92..ce6c770d74d5 100644
+--- a/drivers/scsi/scsi_error.c
++++ b/drivers/scsi/scsi_error.c
+@@ -26,7 +26,6 @@
+ #include <linux/blkdev.h>
+ #include <linux/delay.h>
+ #include <linux/jiffies.h>
+-#include <asm/unaligned.h>
+
+ #include <scsi/scsi.h>
+ #include <scsi/scsi_cmnd.h>
+@@ -2587,33 +2586,3 @@ void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq)
+ }
+ }
+ EXPORT_SYMBOL(scsi_build_sense_buffer);
+-
+-/**
+- * scsi_set_sense_information - set the information field in a
+- * formatted sense data buffer
+- * @buf: Where to build sense data
+- * @info: 64-bit information value to be set
+- *
+- **/
+-void scsi_set_sense_information(u8 *buf, u64 info)
+-{
+- if ((buf[0] & 0x7f) == 0x72) {
+- u8 *ucp, len;
+-
+- len = buf[7];
+- ucp = (char *)scsi_sense_desc_find(buf, len + 8, 0);
+- if (!ucp) {
+- buf[7] = len + 0xa;
+- ucp = buf + 8 + len;
+- }
+- ucp[0] = 0;
+- ucp[1] = 0xa;
+- ucp[2] = 0x80; /* Valid bit */
+- ucp[3] = 0;
+- put_unaligned_be64(info, &ucp[4]);
+- } else if ((buf[0] & 0x7f) == 0x70) {
+- buf[0] |= 0x80;
+- put_unaligned_be64(info, &buf[3]);
+- }
+-}
+-EXPORT_SYMBOL(scsi_set_sense_information);
+diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
+index 9e43ae1d2163..e4b799837948 100644
+--- a/drivers/scsi/scsi_pm.c
++++ b/drivers/scsi/scsi_pm.c
+@@ -217,15 +217,15 @@ static int sdev_runtime_suspend(struct device *dev)
+ {
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ struct scsi_device *sdev = to_scsi_device(dev);
+- int err;
++ int err = 0;
+
+- err = blk_pre_runtime_suspend(sdev->request_queue);
+- if (err)
+- return err;
+- if (pm && pm->runtime_suspend)
++ if (pm && pm->runtime_suspend) {
++ err = blk_pre_runtime_suspend(sdev->request_queue);
++ if (err)
++ return err;
+ err = pm->runtime_suspend(dev);
+- blk_post_runtime_suspend(sdev->request_queue, err);
+-
++ blk_post_runtime_suspend(sdev->request_queue, err);
++ }
+ return err;
+ }
+
+@@ -248,11 +248,11 @@ static int sdev_runtime_resume(struct device *dev)
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ int err = 0;
+
+- blk_pre_runtime_resume(sdev->request_queue);
+- if (pm && pm->runtime_resume)
++ if (pm && pm->runtime_resume) {
++ blk_pre_runtime_resume(sdev->request_queue);
+ err = pm->runtime_resume(dev);
+- blk_post_runtime_resume(sdev->request_queue, err);
+-
++ blk_post_runtime_resume(sdev->request_queue, err);
++ }
+ return err;
+ }
+
+diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
+index 7f9d65fe4fd9..11ea52b2c36b 100644
+--- a/drivers/scsi/sd.c
++++ b/drivers/scsi/sd.c
+@@ -2770,9 +2770,9 @@ static int sd_revalidate_disk(struct gendisk *disk)
+ max_xfer = sdkp->max_xfer_blocks;
+ max_xfer <<= ilog2(sdp->sector_size) - 9;
+
+- max_xfer = min_not_zero(queue_max_hw_sectors(sdkp->disk->queue),
+- max_xfer);
+- blk_queue_max_hw_sectors(sdkp->disk->queue, max_xfer);
++ sdkp->disk->queue->limits.max_sectors =
++ min_not_zero(queue_max_hw_sectors(sdkp->disk->queue), max_xfer);
++
+ set_capacity(disk, sdkp->capacity);
+ sd_config_write_same(sdkp);
+ kfree(buffer);
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 305a5cbc099a..0ab6e2efd28c 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -968,9 +968,9 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
+ cmd->cmd_flags |= ICF_NON_IMMEDIATE_UNSOLICITED_DATA;
+
+ conn->sess->init_task_tag = cmd->init_task_tag = hdr->itt;
+- if (hdr->flags & ISCSI_FLAG_CMD_READ) {
++ if (hdr->flags & ISCSI_FLAG_CMD_READ)
+ cmd->targ_xfer_tag = session_get_next_ttt(conn->sess);
+- } else if (hdr->flags & ISCSI_FLAG_CMD_WRITE)
++ else
+ cmd->targ_xfer_tag = 0xFFFFFFFF;
+ cmd->cmd_sn = be32_to_cpu(hdr->cmdsn);
+ cmd->exp_stat_sn = be32_to_cpu(hdr->exp_statsn);
+diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c
+index 96b2011d25f3..658be6cc3db6 100644
+--- a/drivers/xen/xenbus/xenbus_client.c
++++ b/drivers/xen/xenbus/xenbus_client.c
+@@ -814,8 +814,10 @@ static int xenbus_unmap_ring_vfree_hvm(struct xenbus_device *dev, void *vaddr)
+
+ rv = xenbus_unmap_ring(dev, node->handles, node->nr_handles,
+ addrs);
+- if (!rv)
++ if (!rv) {
+ vunmap(vaddr);
++ free_xenballooned_pages(node->nr_handles, node->hvm.pages);
++ }
+ else
+ WARN(1, "Leaking %p, size %u page(s)\n", vaddr,
+ node->nr_handles);
+diff --git a/include/drm/drm_pciids.h b/include/drm/drm_pciids.h
+index 45c39a37f924..8bc073d297db 100644
+--- a/include/drm/drm_pciids.h
++++ b/include/drm/drm_pciids.h
+@@ -172,6 +172,7 @@
+ {0x1002, 0x6610, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_NEW_MEMMAP}, \
+ {0x1002, 0x6611, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_NEW_MEMMAP}, \
+ {0x1002, 0x6613, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_NEW_MEMMAP}, \
++ {0x1002, 0x6617, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
+ {0x1002, 0x6620, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
+ {0x1002, 0x6621, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
+ {0x1002, 0x6623, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
+diff --git a/include/linux/ata.h b/include/linux/ata.h
+index 533dbb6428f5..5dfbcd8887bb 100644
+--- a/include/linux/ata.h
++++ b/include/linux/ata.h
+@@ -385,8 +385,6 @@ enum {
+ SATA_SSP = 0x06, /* Software Settings Preservation */
+ SATA_DEVSLP = 0x09, /* Device Sleep */
+
+- SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */
+-
+ /* feature values for SET_MAX */
+ ATA_SET_MAX_ADDR = 0x00,
+ ATA_SET_MAX_PASSWD = 0x01,
+@@ -530,8 +528,6 @@ struct ata_bmdma_prd {
+ #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
+ #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
+ #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
+-#define ata_id_has_ncq_autosense(id) \
+- ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7))
+
+ static inline bool ata_id_has_hipm(const u16 *id)
+ {
+@@ -710,20 +706,6 @@ static inline bool ata_id_has_read_log_dma_ext(const u16 *id)
+ return id[ATA_ID_COMMAND_SET_3] & (1 << 3);
+ }
+
+-static inline bool ata_id_has_sense_reporting(const u16 *id)
+-{
+- if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
+- return false;
+- return id[ATA_ID_COMMAND_SET_3] & (1 << 6);
+-}
+-
+-static inline bool ata_id_sense_reporting_enabled(const u16 *id)
+-{
+- if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
+- return false;
+- return id[ATA_ID_COMMAND_SET_4] & (1 << 6);
+-}
+-
+ /**
+ * ata_id_major_version - get ATA level of drive
+ * @id: Identify data
+diff --git a/include/linux/irq.h b/include/linux/irq.h
+index 62c6901cab55..3532dca843f4 100644
+--- a/include/linux/irq.h
++++ b/include/linux/irq.h
+@@ -467,6 +467,7 @@ extern int irq_chip_set_affinity_parent(struct irq_data *data,
+ const struct cpumask *dest,
+ bool force);
+ extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on);
++extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type);
+ #endif
+
+ /* Handling of unhandled and spurious interrupts: */
+diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h
+index 5a4bb5bb66b3..1e1421b06565 100644
+--- a/include/scsi/scsi_eh.h
++++ b/include/scsi/scsi_eh.h
+@@ -59,7 +59,6 @@ extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
+ u64 * info_out);
+
+ extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
+-extern void scsi_set_sense_information(u8 *buf, u64 info);
+
+ extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
+
+diff --git a/ipc/sem.c b/ipc/sem.c
+index d1a6edd17eba..c50aa5755c62 100644
+--- a/ipc/sem.c
++++ b/ipc/sem.c
+@@ -253,6 +253,16 @@ static void sem_rcu_free(struct rcu_head *head)
+ }
+
+ /*
++ * spin_unlock_wait() and !spin_is_locked() are not memory barriers, they
++ * are only control barriers.
++ * The code must pair with spin_unlock(&sem->lock) or
++ * spin_unlock(&sem_perm.lock), thus just the control barrier is insufficient.
++ *
++ * smp_rmb() is sufficient, as writes cannot pass the control barrier.
++ */
++#define ipc_smp_acquire__after_spin_is_unlocked() smp_rmb()
++
++/*
+ * Wait until all currently ongoing simple ops have completed.
+ * Caller must own sem_perm.lock.
+ * New simple ops cannot start, because simple ops first check
+@@ -275,6 +285,7 @@ static void sem_wait_array(struct sem_array *sma)
+ sem = sma->sem_base + i;
+ spin_unlock_wait(&sem->lock);
+ }
++ ipc_smp_acquire__after_spin_is_unlocked();
+ }
+
+ /*
+@@ -327,13 +338,12 @@ static inline int sem_lock(struct sem_array *sma, struct sembuf *sops,
+ /* Then check that the global lock is free */
+ if (!spin_is_locked(&sma->sem_perm.lock)) {
+ /*
+- * The ipc object lock check must be visible on all
+- * cores before rechecking the complex count. Otherwise
+- * we can race with another thread that does:
++ * We need a memory barrier with acquire semantics,
++ * otherwise we can race with another thread that does:
+ * complex_count++;
+ * spin_unlock(sem_perm.lock);
+ */
+- smp_rmb();
++ ipc_smp_acquire__after_spin_is_unlocked();
+
+ /*
+ * Now repeat the test of complex_count:
+@@ -2074,17 +2084,28 @@ void exit_sem(struct task_struct *tsk)
+ rcu_read_lock();
+ un = list_entry_rcu(ulp->list_proc.next,
+ struct sem_undo, list_proc);
+- if (&un->list_proc == &ulp->list_proc)
+- semid = -1;
+- else
+- semid = un->semid;
++ if (&un->list_proc == &ulp->list_proc) {
++ /*
++ * We must wait for freeary() before freeing this ulp,
++ * in case we raced with last sem_undo. There is a small
++ * possibility where we exit while freeary() didn't
++ * finish unlocking sem_undo_list.
++ */
++ spin_unlock_wait(&ulp->lock);
++ rcu_read_unlock();
++ break;
++ }
++ spin_lock(&ulp->lock);
++ semid = un->semid;
++ spin_unlock(&ulp->lock);
+
++ /* exit_sem raced with IPC_RMID, nothing to do */
+ if (semid == -1) {
+ rcu_read_unlock();
+- break;
++ continue;
+ }
+
+- sma = sem_obtain_object_check(tsk->nsproxy->ipc_ns, un->semid);
++ sma = sem_obtain_object_check(tsk->nsproxy->ipc_ns, semid);
+ /* exit_sem raced with IPC_RMID, nothing to do */
+ if (IS_ERR(sma)) {
+ rcu_read_unlock();
+diff --git a/kernel/cpuset.c b/kernel/cpuset.c
+index ee14e3a35a29..f0acff0f66c9 100644
+--- a/kernel/cpuset.c
++++ b/kernel/cpuset.c
+@@ -1223,7 +1223,7 @@ static int update_nodemask(struct cpuset *cs, struct cpuset *trialcs,
+ spin_unlock_irq(&callback_lock);
+
+ /* use trialcs->mems_allowed as a temp variable */
+- update_nodemasks_hier(cs, &cs->mems_allowed);
++ update_nodemasks_hier(cs, &trialcs->mems_allowed);
+ done:
+ return retval;
+ }
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 0ceb386777ae..94817491407b 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -1886,8 +1886,6 @@ event_sched_in(struct perf_event *event,
+
+ perf_pmu_disable(event->pmu);
+
+- event->tstamp_running += tstamp - event->tstamp_stopped;
+-
+ perf_set_shadow_time(event, ctx, tstamp);
+
+ perf_log_itrace_start(event);
+@@ -1899,6 +1897,8 @@ event_sched_in(struct perf_event *event,
+ goto out;
+ }
+
++ event->tstamp_running += tstamp - event->tstamp_stopped;
++
+ if (!is_software_event(event))
+ cpuctx->active_oncpu++;
+ if (!ctx->nr_active++)
+@@ -3976,28 +3976,21 @@ static void perf_event_for_each(struct perf_event *event,
+ perf_event_for_each_child(sibling, func);
+ }
+
+-static int perf_event_period(struct perf_event *event, u64 __user *arg)
+-{
+- struct perf_event_context *ctx = event->ctx;
+- int ret = 0, active;
++struct period_event {
++ struct perf_event *event;
+ u64 value;
++};
+
+- if (!is_sampling_event(event))
+- return -EINVAL;
+-
+- if (copy_from_user(&value, arg, sizeof(value)))
+- return -EFAULT;
+-
+- if (!value)
+- return -EINVAL;
++static int __perf_event_period(void *info)
++{
++ struct period_event *pe = info;
++ struct perf_event *event = pe->event;
++ struct perf_event_context *ctx = event->ctx;
++ u64 value = pe->value;
++ bool active;
+
+- raw_spin_lock_irq(&ctx->lock);
++ raw_spin_lock(&ctx->lock);
+ if (event->attr.freq) {
+- if (value > sysctl_perf_event_sample_rate) {
+- ret = -EINVAL;
+- goto unlock;
+- }
+-
+ event->attr.sample_freq = value;
+ } else {
+ event->attr.sample_period = value;
+@@ -4016,11 +4009,53 @@ static int perf_event_period(struct perf_event *event, u64 __user *arg)
+ event->pmu->start(event, PERF_EF_RELOAD);
+ perf_pmu_enable(ctx->pmu);
+ }
++ raw_spin_unlock(&ctx->lock);
+
+-unlock:
++ return 0;
++}
++
++static int perf_event_period(struct perf_event *event, u64 __user *arg)
++{
++ struct period_event pe = { .event = event, };
++ struct perf_event_context *ctx = event->ctx;
++ struct task_struct *task;
++ u64 value;
++
++ if (!is_sampling_event(event))
++ return -EINVAL;
++
++ if (copy_from_user(&value, arg, sizeof(value)))
++ return -EFAULT;
++
++ if (!value)
++ return -EINVAL;
++
++ if (event->attr.freq && value > sysctl_perf_event_sample_rate)
++ return -EINVAL;
++
++ task = ctx->task;
++ pe.value = value;
++
++ if (!task) {
++ cpu_function_call(event->cpu, __perf_event_period, &pe);
++ return 0;
++ }
++
++retry:
++ if (!task_function_call(task, __perf_event_period, &pe))
++ return 0;
++
++ raw_spin_lock_irq(&ctx->lock);
++ if (ctx->is_active) {
++ raw_spin_unlock_irq(&ctx->lock);
++ task = ctx->task;
++ goto retry;
++ }
++
++ __perf_event_period(&pe);
+ raw_spin_unlock_irq(&ctx->lock);
+
+- return ret;
++ return 0;
+ }
+
+ static const struct file_operations perf_fops;
+@@ -4766,12 +4801,20 @@ static const struct file_operations perf_fops = {
+ * to user-space before waking everybody up.
+ */
+
++static inline struct fasync_struct **perf_event_fasync(struct perf_event *event)
++{
++ /* only the parent has fasync state */
++ if (event->parent)
++ event = event->parent;
++ return &event->fasync;
++}
++
+ void perf_event_wakeup(struct perf_event *event)
+ {
+ ring_buffer_wakeup(event);
+
+ if (event->pending_kill) {
+- kill_fasync(&event->fasync, SIGIO, event->pending_kill);
++ kill_fasync(perf_event_fasync(event), SIGIO, event->pending_kill);
+ event->pending_kill = 0;
+ }
+ }
+@@ -6117,7 +6160,7 @@ static int __perf_event_overflow(struct perf_event *event,
+ else
+ perf_event_output(event, data, regs);
+
+- if (event->fasync && event->pending_kill) {
++ if (*perf_event_fasync(event) && event->pending_kill) {
+ event->pending_wakeup = 1;
+ irq_work_queue(&event->pending);
+ }
+diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
+index 725c416085e3..a7604c81168e 100644
+--- a/kernel/events/ring_buffer.c
++++ b/kernel/events/ring_buffer.c
+@@ -547,11 +547,13 @@ static void __rb_free_aux(struct ring_buffer *rb)
+ rb->aux_priv = NULL;
+ }
+
+- for (pg = 0; pg < rb->aux_nr_pages; pg++)
+- rb_free_aux_page(rb, pg);
++ if (rb->aux_nr_pages) {
++ for (pg = 0; pg < rb->aux_nr_pages; pg++)
++ rb_free_aux_page(rb, pg);
+
+- kfree(rb->aux_pages);
+- rb->aux_nr_pages = 0;
++ kfree(rb->aux_pages);
++ rb->aux_nr_pages = 0;
++ }
+ }
+
+ void rb_free_aux(struct ring_buffer *rb)
+diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
+index eb9a4ea394ab..94bbd8fee90d 100644
+--- a/kernel/irq/chip.c
++++ b/kernel/irq/chip.c
+@@ -934,6 +934,23 @@ int irq_chip_set_affinity_parent(struct irq_data *data,
+ }
+
+ /**
++ * irq_chip_set_type_parent - Set IRQ type on the parent interrupt
++ * @data: Pointer to interrupt specific data
++ * @type: IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
++ *
++ * Conditional, as the underlying parent chip might not implement it.
++ */
++int irq_chip_set_type_parent(struct irq_data *data, unsigned int type)
++{
++ data = data->parent_data;
++
++ if (data->chip->irq_set_type)
++ return data->chip->irq_set_type(data, type);
++
++ return -ENOSYS;
++}
++
++/**
+ * irq_chip_retrigger_hierarchy - Retrigger an interrupt in hardware
+ * @data: Pointer to interrupt specific data
+ *
+@@ -946,7 +963,7 @@ int irq_chip_retrigger_hierarchy(struct irq_data *data)
+ if (data->chip && data->chip->irq_retrigger)
+ return data->chip->irq_retrigger(data);
+
+- return -ENOSYS;
++ return 0;
+ }
+
+ /**
+diff --git a/mm/memory-failure.c b/mm/memory-failure.c
+index 501820c815b3..9f48145c884f 100644
+--- a/mm/memory-failure.c
++++ b/mm/memory-failure.c
+@@ -1558,6 +1558,8 @@ static int get_any_page(struct page *page, unsigned long pfn, int flags)
+ */
+ ret = __get_any_page(page, pfn, 0);
+ if (!PageLRU(page)) {
++ /* Drop page reference which is from __get_any_page() */
++ put_page(page);
+ pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n",
+ pfn, page->flags);
+ return -EIO;
+@@ -1587,13 +1589,12 @@ static int soft_offline_huge_page(struct page *page, int flags)
+ unlock_page(hpage);
+
+ ret = isolate_huge_page(hpage, &pagelist);
+- if (ret) {
+- /*
+- * get_any_page() and isolate_huge_page() takes a refcount each,
+- * so need to drop one here.
+- */
+- put_page(hpage);
+- } else {
++ /*
++ * get_any_page() and isolate_huge_page() takes a refcount each,
++ * so need to drop one here.
++ */
++ put_page(hpage);
++ if (!ret) {
+ pr_info("soft offline: %#lx hugepage failed to isolate\n", pfn);
+ return -EBUSY;
+ }
+diff --git a/net/9p/client.c b/net/9p/client.c
+index 81925b923318..fcf6fe063d82 100644
+--- a/net/9p/client.c
++++ b/net/9p/client.c
+@@ -1541,6 +1541,7 @@ p9_client_read(struct p9_fid *fid, u64 offset, struct iov_iter *to, int *err)
+ struct p9_client *clnt = fid->clnt;
+ struct p9_req_t *req;
+ int total = 0;
++ *err = 0;
+
+ p9_debug(P9_DEBUG_9P, ">>> TREAD fid %d offset %llu %d\n",
+ fid->fid, (unsigned long long) offset, (int)iov_iter_count(to));
+@@ -1616,6 +1617,7 @@ p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err)
+ struct p9_client *clnt = fid->clnt;
+ struct p9_req_t *req;
+ int total = 0;
++ *err = 0;
+
+ p9_debug(P9_DEBUG_9P, ">>> TWRITE fid %d offset %llu count %zd\n",
+ fid->fid, (unsigned long long) offset,
+diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
+index 247552a7f6c2..3ece7d1034c8 100644
+--- a/net/mac80211/rc80211_minstrel.c
++++ b/net/mac80211/rc80211_minstrel.c
+@@ -92,14 +92,15 @@ int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_ewma)
+ static inline void
+ minstrel_sort_best_tp_rates(struct minstrel_sta_info *mi, int i, u8 *tp_list)
+ {
+- int j = MAX_THR_RATES;
+- struct minstrel_rate_stats *tmp_mrs = &mi->r[j - 1].stats;
++ int j;
++ struct minstrel_rate_stats *tmp_mrs;
+ struct minstrel_rate_stats *cur_mrs = &mi->r[i].stats;
+
+- while (j > 0 && (minstrel_get_tp_avg(&mi->r[i], cur_mrs->prob_ewma) >
+- minstrel_get_tp_avg(&mi->r[tp_list[j - 1]], tmp_mrs->prob_ewma))) {
+- j--;
++ for (j = MAX_THR_RATES; j > 0; --j) {
+ tmp_mrs = &mi->r[tp_list[j - 1]].stats;
++ if (minstrel_get_tp_avg(&mi->r[i], cur_mrs->prob_ewma) <=
++ minstrel_get_tp_avg(&mi->r[tp_list[j - 1]], tmp_mrs->prob_ewma))
++ break;
+ }
+
+ if (j < MAX_THR_RATES - 1)
+diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
+index 9cb8522d8d22..f3d3fb42b873 100755
+--- a/scripts/kconfig/streamline_config.pl
++++ b/scripts/kconfig/streamline_config.pl
+@@ -137,7 +137,7 @@ my $ksource = ($ARGV[0] ? $ARGV[0] : '.');
+ my $kconfig = $ARGV[1];
+ my $lsmod_file = $ENV{'LSMOD'};
+
+-my @makefiles = `find $ksource -name Makefile 2>/dev/null`;
++my @makefiles = `find $ksource -name Makefile -or -name Kbuild 2>/dev/null`;
+ chomp @makefiles;
+
+ my %depends;
+diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
+index 5645481af3d9..36e8f1236637 100644
+--- a/sound/pci/hda/hda_codec.c
++++ b/sound/pci/hda/hda_codec.c
+@@ -3259,7 +3259,7 @@ static int add_std_chmaps(struct hda_codec *codec)
+ struct snd_pcm_chmap *chmap;
+ const struct snd_pcm_chmap_elem *elem;
+
+- if (!pcm || pcm->own_chmap ||
++ if (!pcm || !pcm->pcm || pcm->own_chmap ||
+ !hinfo->substreams)
+ continue;
+ elem = hinfo->chmap ? hinfo->chmap : snd_pcm_std_chmaps;
+diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
+index ac0db1679f09..5bc7f2e2715c 100644
+--- a/sound/pci/hda/hda_generic.c
++++ b/sound/pci/hda/hda_generic.c
+@@ -671,7 +671,8 @@ static bool is_active_nid(struct hda_codec *codec, hda_nid_t nid,
+ }
+ for (i = 0; i < path->depth; i++) {
+ if (path->path[i] == nid) {
+- if (dir == HDA_OUTPUT || path->idx[i] == idx)
++ if (dir == HDA_OUTPUT || idx == -1 ||
++ path->idx[i] == idx)
+ return true;
+ break;
+ }
+@@ -682,7 +683,7 @@ static bool is_active_nid(struct hda_codec *codec, hda_nid_t nid,
+
+ /* check whether the NID is referred by any active paths */
+ #define is_active_nid_for_any(codec, nid) \
+- is_active_nid(codec, nid, HDA_OUTPUT, 0)
++ is_active_nid(codec, nid, HDA_OUTPUT, -1)
+
+ /* get the default amp value for the target state */
+ static int get_amp_val_to_activate(struct hda_codec *codec, hda_nid_t nid,
+@@ -883,8 +884,7 @@ void snd_hda_activate_path(struct hda_codec *codec, struct nid_path *path,
+ struct hda_gen_spec *spec = codec->spec;
+ int i;
+
+- if (!enable)
+- path->active = false;
++ path->active = enable;
+
+ /* make sure the widget is powered up */
+ if (enable && (spec->power_down_unused || codec->power_save_node))
+@@ -902,9 +902,6 @@ void snd_hda_activate_path(struct hda_codec *codec, struct nid_path *path,
+ if (has_amp_out(codec, path, i))
+ activate_amp_out(codec, path, i, enable);
+ }
+-
+- if (enable)
+- path->active = true;
+ }
+ EXPORT_SYMBOL_GPL(snd_hda_activate_path);
+
+diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
+index 78b719b5b34d..06cc9d57ba3d 100644
+--- a/sound/pci/hda/patch_conexant.c
++++ b/sound/pci/hda/patch_conexant.c
+@@ -200,12 +200,33 @@ static int cx_auto_init(struct hda_codec *codec)
+ return 0;
+ }
+
+-#define cx_auto_free snd_hda_gen_free
++static void cx_auto_reboot_notify(struct hda_codec *codec)
++{
++ struct conexant_spec *spec = codec->spec;
++
++ if (codec->core.vendor_id != 0x14f150f2)
++ return;
++
++ /* Turn the CX20722 codec into D3 to avoid spurious noises
++ from the internal speaker during (and after) reboot */
++ cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, false);
++
++ snd_hda_codec_set_power_to_all(codec, codec->core.afg, AC_PWRST_D3);
++ snd_hda_codec_write(codec, codec->core.afg, 0,
++ AC_VERB_SET_POWER_STATE, AC_PWRST_D3);
++}
++
++static void cx_auto_free(struct hda_codec *codec)
++{
++ cx_auto_reboot_notify(codec);
++ snd_hda_gen_free(codec);
++}
+
+ static const struct hda_codec_ops cx_auto_patch_ops = {
+ .build_controls = cx_auto_build_controls,
+ .build_pcms = snd_hda_gen_build_pcms,
+ .init = cx_auto_init,
++ .reboot_notify = cx_auto_reboot_notify,
+ .free = cx_auto_free,
+ .unsol_event = snd_hda_jack_unsol_event,
+ #ifdef CONFIG_PM
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 1e99f075a5ab..91f6928560e1 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5119,6 +5119,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
++ SND_PCI_QUIRK(0x1028, 0x06db, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
+diff --git a/sound/usb/card.c b/sound/usb/card.c
+index 1fab9778807a..0450593980fd 100644
+--- a/sound/usb/card.c
++++ b/sound/usb/card.c
+@@ -638,7 +638,7 @@ int snd_usb_autoresume(struct snd_usb_audio *chip)
+ int err = -ENODEV;
+
+ down_read(&chip->shutdown_rwsem);
+- if (chip->probing && chip->in_pm)
++ if (chip->probing || chip->in_pm)
+ err = 0;
+ else if (!chip->shutdown)
+ err = usb_autopm_get_interface(chip->pm_intf);
+diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
+index 754e689596a2..00ebc0ca008e 100644
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1268,6 +1268,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
+ return SNDRV_PCM_FMTBIT_DSD_U32_BE;
+ break;
+
++ case USB_ID(0x20b1, 0x000a): /* Gustard DAC-X20U */
+ case USB_ID(0x20b1, 0x2009): /* DIYINHK DSD DXD 384kHz USB to I2S/DSD */
+ case USB_ID(0x20b1, 0x2023): /* JLsounds I2SoverUSB */
+ if (fp->altsetting == 3)
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-08-17 15:38 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-08-17 15:38 UTC (permalink / raw
To: gentoo-commits
commit: 274174ebb8986e7755b47ecf774bcfeb13e25948
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Aug 17 15:37:54 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Aug 17 15:37:54 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=274174eb
Linux patch 4.1.6
0000_README | 4 +
1005_linux-4.1.6.patch | 4380 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 4384 insertions(+)
diff --git a/0000_README b/0000_README
index fd7a57d..83ddebf 100644
--- a/0000_README
+++ b/0000_README
@@ -63,6 +63,10 @@ Patch: 1004_linux-4.1.5.patch
From: http://www.kernel.org
Desc: Linux 4.1.5
+Patch: 1005_linux-4.1.6.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.6
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1005_linux-4.1.6.patch b/1005_linux-4.1.6.patch
new file mode 100644
index 0000000..3dcd61f
--- /dev/null
+++ b/1005_linux-4.1.6.patch
@@ -0,0 +1,4380 @@
+diff --git a/Documentation/devicetree/bindings/clock/keystone-pll.txt b/Documentation/devicetree/bindings/clock/keystone-pll.txt
+index 225990f79b7c..47570d207215 100644
+--- a/Documentation/devicetree/bindings/clock/keystone-pll.txt
++++ b/Documentation/devicetree/bindings/clock/keystone-pll.txt
+@@ -15,8 +15,8 @@ Required properties:
+ - compatible : shall be "ti,keystone,main-pll-clock" or "ti,keystone,pll-clock"
+ - clocks : parent clock phandle
+ - reg - pll control0 and pll multipler registers
+-- reg-names : control and multiplier. The multiplier is applicable only for
+- main pll clock
++- reg-names : control, multiplier and post-divider. The multiplier and
++ post-divider registers are applicable only for main pll clock
+ - fixed-postdiv : fixed post divider value. If absent, use clkod register bits
+ for postdiv
+
+@@ -25,8 +25,8 @@ Example:
+ #clock-cells = <0>;
+ compatible = "ti,keystone,main-pll-clock";
+ clocks = <&refclksys>;
+- reg = <0x02620350 4>, <0x02310110 4>;
+- reg-names = "control", "multiplier";
++ reg = <0x02620350 4>, <0x02310110 4>, <0x02310108 4>;
++ reg-names = "control", "multiplier", "post-divider";
+ fixed-postdiv = <2>;
+ };
+
+diff --git a/Documentation/input/alps.txt b/Documentation/input/alps.txt
+index c86f2f1ae4f6..1fec1135791d 100644
+--- a/Documentation/input/alps.txt
++++ b/Documentation/input/alps.txt
+@@ -119,8 +119,10 @@ ALPS Absolute Mode - Protocol Version 2
+ byte 5: 0 z6 z5 z4 z3 z2 z1 z0
+
+ Protocol Version 2 DualPoint devices send standard PS/2 mouse packets for
+-the DualPoint Stick. For non interleaved dualpoint devices the pointingstick
+-buttons get reported separately in the PSM, PSR and PSL bits.
++the DualPoint Stick. The M, R and L bits signal the combined status of both
++the pointingstick and touchpad buttons, except for Dell dualpoint devices
++where the pointingstick buttons get reported separately in the PSM, PSR
++and PSL bits.
+
+ Dualpoint device -- interleaved packet format
+ ---------------------------------------------
+diff --git a/Makefile b/Makefile
+index 068dd690933d..838dabcb7f48 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 5
++SUBLEVEL = 6
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/imx35.dtsi b/arch/arm/boot/dts/imx35.dtsi
+index b6478e97d6a7..e6540b5cfa4c 100644
+--- a/arch/arm/boot/dts/imx35.dtsi
++++ b/arch/arm/boot/dts/imx35.dtsi
+@@ -286,8 +286,8 @@
+ can1: can@53fe4000 {
+ compatible = "fsl,imx35-flexcan", "fsl,p1010-flexcan";
+ reg = <0x53fe4000 0x1000>;
+- clocks = <&clks 33>;
+- clock-names = "ipg";
++ clocks = <&clks 33>, <&clks 33>;
++ clock-names = "ipg", "per";
+ interrupts = <43>;
+ status = "disabled";
+ };
+@@ -295,8 +295,8 @@
+ can2: can@53fe8000 {
+ compatible = "fsl,imx35-flexcan", "fsl,p1010-flexcan";
+ reg = <0x53fe8000 0x1000>;
+- clocks = <&clks 34>;
+- clock-names = "ipg";
++ clocks = <&clks 34>, <&clks 34>;
++ clock-names = "ipg", "per";
+ interrupts = <44>;
+ status = "disabled";
+ };
+diff --git a/arch/arm/boot/dts/k2e-clocks.dtsi b/arch/arm/boot/dts/k2e-clocks.dtsi
+index 4773d6af66a0..d56d68fe7ffc 100644
+--- a/arch/arm/boot/dts/k2e-clocks.dtsi
++++ b/arch/arm/boot/dts/k2e-clocks.dtsi
+@@ -13,9 +13,8 @@ clocks {
+ #clock-cells = <0>;
+ compatible = "ti,keystone,main-pll-clock";
+ clocks = <&refclksys>;
+- reg = <0x02620350 4>, <0x02310110 4>;
+- reg-names = "control", "multiplier";
+- fixed-postdiv = <2>;
++ reg = <0x02620350 4>, <0x02310110 4>, <0x02310108 4>;
++ reg-names = "control", "multiplier", "post-divider";
+ };
+
+ papllclk: papllclk@2620358 {
+diff --git a/arch/arm/boot/dts/k2hk-clocks.dtsi b/arch/arm/boot/dts/k2hk-clocks.dtsi
+index d5adee3c0067..af9b7190533a 100644
+--- a/arch/arm/boot/dts/k2hk-clocks.dtsi
++++ b/arch/arm/boot/dts/k2hk-clocks.dtsi
+@@ -22,9 +22,8 @@ clocks {
+ #clock-cells = <0>;
+ compatible = "ti,keystone,main-pll-clock";
+ clocks = <&refclksys>;
+- reg = <0x02620350 4>, <0x02310110 4>;
+- reg-names = "control", "multiplier";
+- fixed-postdiv = <2>;
++ reg = <0x02620350 4>, <0x02310110 4>, <0x02310108 4>;
++ reg-names = "control", "multiplier", "post-divider";
+ };
+
+ papllclk: papllclk@2620358 {
+diff --git a/arch/arm/boot/dts/k2l-clocks.dtsi b/arch/arm/boot/dts/k2l-clocks.dtsi
+index eb1e3e29f073..ef8464bb11ff 100644
+--- a/arch/arm/boot/dts/k2l-clocks.dtsi
++++ b/arch/arm/boot/dts/k2l-clocks.dtsi
+@@ -22,9 +22,8 @@ clocks {
+ #clock-cells = <0>;
+ compatible = "ti,keystone,main-pll-clock";
+ clocks = <&refclksys>;
+- reg = <0x02620350 4>, <0x02310110 4>;
+- reg-names = "control", "multiplier";
+- fixed-postdiv = <2>;
++ reg = <0x02620350 4>, <0x02310110 4>, <0x02310108 4>;
++ reg-names = "control", "multiplier", "post-divider";
+ };
+
+ papllclk: papllclk@2620358 {
+diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
+index 752969ff9de0..5286e7773ed4 100644
+--- a/arch/arm/mach-omap2/omap_hwmod.c
++++ b/arch/arm/mach-omap2/omap_hwmod.c
+@@ -2373,6 +2373,9 @@ static int of_dev_hwmod_lookup(struct device_node *np,
+ * registers. This address is needed early so the OCP registers that
+ * are part of the device's address space can be ioremapped properly.
+ *
++ * If SYSC access is not needed, the registers will not be remapped
++ * and non-availability of MPU access is not treated as an error.
++ *
+ * Returns 0 on success, -EINVAL if an invalid hwmod is passed, and
+ * -ENXIO on absent or invalid register target address space.
+ */
+@@ -2387,6 +2390,11 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
+
+ _save_mpu_port_index(oh);
+
++ /* if we don't need sysc access we don't need to ioremap */
++ if (!oh->class->sysc)
++ return 0;
++
++ /* we can't continue without MPU PORT if we need sysc access */
+ if (oh->_int_flags & _HWMOD_NO_MPU_PORT)
+ return -ENXIO;
+
+@@ -2396,8 +2404,10 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
+ oh->name);
+
+ /* Extract the IO space from device tree blob */
+- if (!np)
++ if (!np) {
++ pr_err("omap_hwmod: %s: no dt node\n", oh->name);
+ return -ENXIO;
++ }
+
+ va_start = of_iomap(np, index + oh->mpu_rt_idx);
+ } else {
+@@ -2456,13 +2466,11 @@ static int __init _init(struct omap_hwmod *oh, void *data)
+ oh->name, np->name);
+ }
+
+- if (oh->class->sysc) {
+- r = _init_mpu_rt_base(oh, NULL, index, np);
+- if (r < 0) {
+- WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
+- oh->name);
+- return 0;
+- }
++ r = _init_mpu_rt_base(oh, NULL, index, np);
++ if (r < 0) {
++ WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
++ oh->name);
++ return 0;
+ }
+
+ r = _init_clocks(oh, NULL);
+diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
+index d26fcd4cd6e6..c0cff3410166 100644
+--- a/arch/arm64/kernel/signal32.c
++++ b/arch/arm64/kernel/signal32.c
+@@ -168,7 +168,8 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
+ * Other callers might not initialize the si_lsb field,
+ * so check explicitely for the right codes here.
+ */
+- if (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)
++ if (from->si_signo == SIGBUS &&
++ (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO))
+ err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
+ #endif
+ break;
+@@ -201,8 +202,6 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
+
+ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
+ {
+- memset(to, 0, sizeof *to);
+-
+ if (copy_from_user(to, from, __ARCH_SI_PREAMBLE_SIZE) ||
+ copy_from_user(to->_sifields._pad,
+ from->_sifields._pad, SI_PAD_SIZE))
+diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
+index 7fc8397d16f2..fd2a36a79f97 100644
+--- a/arch/mips/ath79/setup.c
++++ b/arch/mips/ath79/setup.c
+@@ -186,6 +186,7 @@ int get_c0_perfcount_int(void)
+ {
+ return ATH79_MISC_IRQ(5);
+ }
++EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
+ unsigned int get_c0_compare_int(void)
+ {
+diff --git a/arch/mips/include/asm/mach-bcm63xx/dma-coherence.h b/arch/mips/include/asm/mach-bcm63xx/dma-coherence.h
+deleted file mode 100644
+index 11d3b572b1b3..000000000000
+--- a/arch/mips/include/asm/mach-bcm63xx/dma-coherence.h
++++ /dev/null
+@@ -1,10 +0,0 @@
+-#ifndef __ASM_MACH_BCM63XX_DMA_COHERENCE_H
+-#define __ASM_MACH_BCM63XX_DMA_COHERENCE_H
+-
+-#include <asm/bmips.h>
+-
+-#define plat_post_dma_flush bmips_post_dma_flush
+-
+-#include <asm/mach-generic/dma-coherence.h>
+-
+-#endif /* __ASM_MACH_BCM63XX_DMA_COHERENCE_H */
+diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
+index 819af9d057a8..70f6e7f073b0 100644
+--- a/arch/mips/include/asm/pgtable.h
++++ b/arch/mips/include/asm/pgtable.h
+@@ -182,8 +182,39 @@ static inline void set_pte(pte_t *ptep, pte_t pteval)
+ * Make sure the buddy is global too (if it's !none,
+ * it better already be global)
+ */
++#ifdef CONFIG_SMP
++ /*
++ * For SMP, multiple CPUs can race, so we need to do
++ * this atomically.
++ */
++#ifdef CONFIG_64BIT
++#define LL_INSN "lld"
++#define SC_INSN "scd"
++#else /* CONFIG_32BIT */
++#define LL_INSN "ll"
++#define SC_INSN "sc"
++#endif
++ unsigned long page_global = _PAGE_GLOBAL;
++ unsigned long tmp;
++
++ __asm__ __volatile__ (
++ " .set push\n"
++ " .set noreorder\n"
++ "1: " LL_INSN " %[tmp], %[buddy]\n"
++ " bnez %[tmp], 2f\n"
++ " or %[tmp], %[tmp], %[global]\n"
++ " " SC_INSN " %[tmp], %[buddy]\n"
++ " beqz %[tmp], 1b\n"
++ " nop\n"
++ "2:\n"
++ " .set pop"
++ : [buddy] "+m" (buddy->pte),
++ [tmp] "=&r" (tmp)
++ : [global] "r" (page_global));
++#else /* !CONFIG_SMP */
+ if (pte_none(*buddy))
+ pte_val(*buddy) = pte_val(*buddy) | _PAGE_GLOBAL;
++#endif /* CONFIG_SMP */
+ }
+ #endif
+ }
+diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
+index 28d6d9364bd1..a71da576883c 100644
+--- a/arch/mips/include/asm/stackframe.h
++++ b/arch/mips/include/asm/stackframe.h
+@@ -152,6 +152,31 @@
+ .set noreorder
+ bltz k0, 8f
+ move k1, sp
++#ifdef CONFIG_EVA
++ /*
++ * Flush interAptiv's Return Prediction Stack (RPS) by writing
++ * EntryHi. Toggling Config7.RPS is slower and less portable.
++ *
++ * The RPS isn't automatically flushed when exceptions are
++ * taken, which can result in kernel mode speculative accesses
++ * to user addresses if the RPS mispredicts. That's harmless
++ * when user and kernel share the same address space, but with
++ * EVA the same user segments may be unmapped to kernel mode,
++ * even containing sensitive MMIO regions or invalid memory.
++ *
++ * This can happen when the kernel sets the return address to
++ * ret_from_* and jr's to the exception handler, which looks
++ * more like a tail call than a function call. If nested calls
++ * don't evict the last user address in the RPS, it will
++ * mispredict the return and fetch from a user controlled
++ * address into the icache.
++ *
++ * More recent EVA-capable cores with MAAR to restrict
++ * speculative accesses aren't affected.
++ */
++ MFC0 k0, CP0_ENTRYHI
++ MTC0 k0, CP0_ENTRYHI
++#endif
+ .set reorder
+ /* Called from user mode, new stack. */
+ get_saved_sp
+diff --git a/arch/mips/kernel/mips-mt-fpaff.c b/arch/mips/kernel/mips-mt-fpaff.c
+index 3e4491aa6d6b..789d7bf4fef3 100644
+--- a/arch/mips/kernel/mips-mt-fpaff.c
++++ b/arch/mips/kernel/mips-mt-fpaff.c
+@@ -154,7 +154,7 @@ asmlinkage long mipsmt_sys_sched_getaffinity(pid_t pid, unsigned int len,
+ unsigned long __user *user_mask_ptr)
+ {
+ unsigned int real_len;
+- cpumask_t mask;
++ cpumask_t allowed, mask;
+ int retval;
+ struct task_struct *p;
+
+@@ -173,7 +173,8 @@ asmlinkage long mipsmt_sys_sched_getaffinity(pid_t pid, unsigned int len,
+ if (retval)
+ goto out_unlock;
+
+- cpumask_and(&mask, &p->thread.user_cpus_allowed, cpu_possible_mask);
++ cpumask_or(&allowed, &p->thread.user_cpus_allowed, &p->cpus_allowed);
++ cpumask_and(&mask, &allowed, cpu_active_mask);
+
+ out_unlock:
+ read_unlock(&tasklist_lock);
+diff --git a/arch/mips/kernel/relocate_kernel.S b/arch/mips/kernel/relocate_kernel.S
+index 74bab9ddd0e1..c6bbf2165051 100644
+--- a/arch/mips/kernel/relocate_kernel.S
++++ b/arch/mips/kernel/relocate_kernel.S
+@@ -24,7 +24,7 @@ LEAF(relocate_new_kernel)
+
+ process_entry:
+ PTR_L s2, (s0)
+- PTR_ADD s0, s0, SZREG
++ PTR_ADDIU s0, s0, SZREG
+
+ /*
+ * In case of a kdump/crash kernel, the indirection page is not
+@@ -61,9 +61,9 @@ copy_word:
+ /* copy page word by word */
+ REG_L s5, (s2)
+ REG_S s5, (s4)
+- PTR_ADD s4, s4, SZREG
+- PTR_ADD s2, s2, SZREG
+- LONG_SUB s6, s6, 1
++ PTR_ADDIU s4, s4, SZREG
++ PTR_ADDIU s2, s2, SZREG
++ LONG_ADDIU s6, s6, -1
+ beq s6, zero, process_entry
+ b copy_word
+ b process_entry
+diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
+index 19a7705f2a01..5d7f2634996f 100644
+--- a/arch/mips/kernel/signal32.c
++++ b/arch/mips/kernel/signal32.c
+@@ -409,8 +409,6 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
+
+ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
+ {
+- memset(to, 0, sizeof *to);
+-
+ if (copy_from_user(to, from, 3*sizeof(int)) ||
+ copy_from_user(to->_sifields._pad,
+ from->_sifields._pad, SI_PAD_SIZE32))
+diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
+index d2d1c1933bc9..5f5f44edc77d 100644
+--- a/arch/mips/kernel/traps.c
++++ b/arch/mips/kernel/traps.c
+@@ -192,6 +192,7 @@ static void show_stacktrace(struct task_struct *task,
+ void show_stack(struct task_struct *task, unsigned long *sp)
+ {
+ struct pt_regs regs;
++ mm_segment_t old_fs = get_fs();
+ if (sp) {
+ regs.regs[29] = (unsigned long)sp;
+ regs.regs[31] = 0;
+@@ -210,7 +211,13 @@ void show_stack(struct task_struct *task, unsigned long *sp)
+ prepare_frametrace(®s);
+ }
+ }
++ /*
++ * show_stack() deals exclusively with kernel mode, so be sure to access
++ * the stack in the kernel (not user) address space.
++ */
++ set_fs(KERNEL_DS);
+ show_stacktrace(task, ®s);
++ set_fs(old_fs);
+ }
+
+ static void show_code(unsigned int __user *pc)
+@@ -1518,6 +1525,7 @@ asmlinkage void do_mcheck(struct pt_regs *regs)
+ const int field = 2 * sizeof(unsigned long);
+ int multi_match = regs->cp0_status & ST0_TS;
+ enum ctx_state prev_state;
++ mm_segment_t old_fs = get_fs();
+
+ prev_state = exception_enter();
+ show_regs(regs);
+@@ -1539,8 +1547,13 @@ asmlinkage void do_mcheck(struct pt_regs *regs)
+ dump_tlb_all();
+ }
+
++ if (!user_mode(regs))
++ set_fs(KERNEL_DS);
++
+ show_code((unsigned int __user *) regs->cp0_epc);
+
++ set_fs(old_fs);
++
+ /*
+ * Some chips may have other causes of machine check (e.g. SB1
+ * graduation timer)
+diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c
+index af84bef0c90d..eb3efd137fd1 100644
+--- a/arch/mips/kernel/unaligned.c
++++ b/arch/mips/kernel/unaligned.c
+@@ -438,7 +438,7 @@ do { \
+ : "memory"); \
+ } while(0)
+
+-#define StoreDW(addr, value, res) \
++#define _StoreDW(addr, value, res) \
+ do { \
+ __asm__ __volatile__ ( \
+ ".set\tpush\n\t" \
+diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
+index 6ab10573490d..d01ade63492f 100644
+--- a/arch/mips/lantiq/irq.c
++++ b/arch/mips/lantiq/irq.c
+@@ -466,6 +466,7 @@ int get_c0_perfcount_int(void)
+ {
+ return ltq_perfcount_irq;
+ }
++EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
+ unsigned int get_c0_compare_int(void)
+ {
+diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c
+index 185e68261f45..a7f7d9ffb402 100644
+--- a/arch/mips/mti-malta/malta-time.c
++++ b/arch/mips/mti-malta/malta-time.c
+@@ -148,6 +148,7 @@ int get_c0_perfcount_int(void)
+
+ return mips_cpu_perf_irq;
+ }
++EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
+ unsigned int get_c0_compare_int(void)
+ {
+@@ -165,14 +166,17 @@ unsigned int get_c0_compare_int(void)
+
+ static void __init init_rtc(void)
+ {
+- /* stop the clock whilst setting it up */
+- CMOS_WRITE(RTC_SET | RTC_24H, RTC_CONTROL);
++ unsigned char freq, ctrl;
+
+- /* 32KHz time base */
+- CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_FREQ_SELECT);
++ /* Set 32KHz time base if not already set */
++ freq = CMOS_READ(RTC_FREQ_SELECT);
++ if ((freq & RTC_DIV_CTL) != RTC_REF_CLCK_32KHZ)
++ CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_FREQ_SELECT);
+
+- /* start the clock */
+- CMOS_WRITE(RTC_24H, RTC_CONTROL);
++ /* Ensure SET bit is clear so RTC can run */
++ ctrl = CMOS_READ(RTC_CONTROL);
++ if (ctrl & RTC_SET)
++ CMOS_WRITE(ctrl & ~RTC_SET, RTC_CONTROL);
+ }
+
+ void __init plat_time_init(void)
+diff --git a/arch/mips/mti-sead3/sead3-time.c b/arch/mips/mti-sead3/sead3-time.c
+index e1d69895fb1d..a120b7a5a8fe 100644
+--- a/arch/mips/mti-sead3/sead3-time.c
++++ b/arch/mips/mti-sead3/sead3-time.c
+@@ -77,6 +77,7 @@ int get_c0_perfcount_int(void)
+ return MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
+ return -1;
+ }
++EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
+ unsigned int get_c0_compare_int(void)
+ {
+diff --git a/arch/mips/pistachio/time.c b/arch/mips/pistachio/time.c
+index 67889fcea8aa..ab73f6f405bb 100644
+--- a/arch/mips/pistachio/time.c
++++ b/arch/mips/pistachio/time.c
+@@ -26,6 +26,7 @@ int get_c0_perfcount_int(void)
+ {
+ return gic_get_c0_perfcount_int();
+ }
++EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
+ void __init plat_time_init(void)
+ {
+diff --git a/arch/mips/ralink/irq.c b/arch/mips/ralink/irq.c
+index 7cf91b92e9d1..199ace4ca1ad 100644
+--- a/arch/mips/ralink/irq.c
++++ b/arch/mips/ralink/irq.c
+@@ -89,6 +89,7 @@ int get_c0_perfcount_int(void)
+ {
+ return rt_perfcount_irq;
+ }
++EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
+ unsigned int get_c0_compare_int(void)
+ {
+diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
+index d3a831ac0f92..da50e0c9c57e 100644
+--- a/arch/powerpc/kernel/signal_32.c
++++ b/arch/powerpc/kernel/signal_32.c
+@@ -966,8 +966,6 @@ int copy_siginfo_to_user32(struct compat_siginfo __user *d, const siginfo_t *s)
+
+ int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
+ {
+- memset(to, 0, sizeof *to);
+-
+ if (copy_from_user(to, from, 3*sizeof(int)) ||
+ copy_from_user(to->_sifields._pad,
+ from->_sifields._pad, SI_PAD_SIZE32))
+diff --git a/arch/sparc/include/asm/visasm.h b/arch/sparc/include/asm/visasm.h
+index 1f0aa2024e94..6424249d5f78 100644
+--- a/arch/sparc/include/asm/visasm.h
++++ b/arch/sparc/include/asm/visasm.h
+@@ -28,16 +28,10 @@
+ * Must preserve %o5 between VISEntryHalf and VISExitHalf */
+
+ #define VISEntryHalf \
+- rd %fprs, %o5; \
+- andcc %o5, FPRS_FEF, %g0; \
+- be,pt %icc, 297f; \
+- sethi %hi(298f), %g7; \
+- sethi %hi(VISenterhalf), %g1; \
+- jmpl %g1 + %lo(VISenterhalf), %g0; \
+- or %g7, %lo(298f), %g7; \
+- clr %o5; \
+-297: wr %o5, FPRS_FEF, %fprs; \
+-298:
++ VISEntry
++
++#define VISExitHalf \
++ VISExit
+
+ #define VISEntryHalfFast(fail_label) \
+ rd %fprs, %o5; \
+@@ -47,7 +41,7 @@
+ ba,a,pt %xcc, fail_label; \
+ 297: wr %o5, FPRS_FEF, %fprs;
+
+-#define VISExitHalf \
++#define VISExitHalfFast \
+ wr %o5, 0, %fprs;
+
+ #ifndef __ASSEMBLY__
+diff --git a/arch/sparc/lib/NG4memcpy.S b/arch/sparc/lib/NG4memcpy.S
+index 140527a20e7d..83aeeb1dffdb 100644
+--- a/arch/sparc/lib/NG4memcpy.S
++++ b/arch/sparc/lib/NG4memcpy.S
+@@ -240,8 +240,11 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
+ add %o0, 0x40, %o0
+ bne,pt %icc, 1b
+ LOAD(prefetch, %g1 + 0x200, #n_reads_strong)
++#ifdef NON_USER_COPY
++ VISExitHalfFast
++#else
+ VISExitHalf
+-
++#endif
+ brz,pn %o2, .Lexit
+ cmp %o2, 19
+ ble,pn %icc, .Lsmall_unaligned
+diff --git a/arch/sparc/lib/VISsave.S b/arch/sparc/lib/VISsave.S
+index b320ae9e2e2e..a063d84336d6 100644
+--- a/arch/sparc/lib/VISsave.S
++++ b/arch/sparc/lib/VISsave.S
+@@ -44,9 +44,8 @@ vis1: ldub [%g6 + TI_FPSAVED], %g3
+
+ stx %g3, [%g6 + TI_GSR]
+ 2: add %g6, %g1, %g3
+- cmp %o5, FPRS_DU
+- be,pn %icc, 6f
+- sll %g1, 3, %g1
++ mov FPRS_DU | FPRS_DL | FPRS_FEF, %o5
++ sll %g1, 3, %g1
+ stb %o5, [%g3 + TI_FPSAVED]
+ rd %gsr, %g2
+ add %g6, %g1, %g3
+@@ -80,65 +79,3 @@ vis1: ldub [%g6 + TI_FPSAVED], %g3
+ .align 32
+ 80: jmpl %g7 + %g0, %g0
+ nop
+-
+-6: ldub [%g3 + TI_FPSAVED], %o5
+- or %o5, FPRS_DU, %o5
+- add %g6, TI_FPREGS+0x80, %g2
+- stb %o5, [%g3 + TI_FPSAVED]
+-
+- sll %g1, 5, %g1
+- add %g6, TI_FPREGS+0xc0, %g3
+- wr %g0, FPRS_FEF, %fprs
+- membar #Sync
+- stda %f32, [%g2 + %g1] ASI_BLK_P
+- stda %f48, [%g3 + %g1] ASI_BLK_P
+- membar #Sync
+- ba,pt %xcc, 80f
+- nop
+-
+- .align 32
+-80: jmpl %g7 + %g0, %g0
+- nop
+-
+- .align 32
+-VISenterhalf:
+- ldub [%g6 + TI_FPDEPTH], %g1
+- brnz,a,pn %g1, 1f
+- cmp %g1, 1
+- stb %g0, [%g6 + TI_FPSAVED]
+- stx %fsr, [%g6 + TI_XFSR]
+- clr %o5
+- jmpl %g7 + %g0, %g0
+- wr %g0, FPRS_FEF, %fprs
+-
+-1: bne,pn %icc, 2f
+- srl %g1, 1, %g1
+- ba,pt %xcc, vis1
+- sub %g7, 8, %g7
+-2: addcc %g6, %g1, %g3
+- sll %g1, 3, %g1
+- andn %o5, FPRS_DU, %g2
+- stb %g2, [%g3 + TI_FPSAVED]
+-
+- rd %gsr, %g2
+- add %g6, %g1, %g3
+- stx %g2, [%g3 + TI_GSR]
+- add %g6, %g1, %g2
+- stx %fsr, [%g2 + TI_XFSR]
+- sll %g1, 5, %g1
+-3: andcc %o5, FPRS_DL, %g0
+- be,pn %icc, 4f
+- add %g6, TI_FPREGS, %g2
+-
+- add %g6, TI_FPREGS+0x40, %g3
+- membar #Sync
+- stda %f0, [%g2 + %g1] ASI_BLK_P
+- stda %f16, [%g3 + %g1] ASI_BLK_P
+- membar #Sync
+- ba,pt %xcc, 4f
+- nop
+-
+- .align 32
+-4: and %o5, FPRS_DU, %o5
+- jmpl %g7 + %g0, %g0
+- wr %o5, FPRS_FEF, %fprs
+diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c
+index 1d649a95660c..8069ce12f20b 100644
+--- a/arch/sparc/lib/ksyms.c
++++ b/arch/sparc/lib/ksyms.c
+@@ -135,10 +135,6 @@ EXPORT_SYMBOL(copy_user_page);
+ void VISenter(void);
+ EXPORT_SYMBOL(VISenter);
+
+-/* CRYPTO code needs this */
+-void VISenterhalf(void);
+-EXPORT_SYMBOL(VISenterhalf);
+-
+ extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
+ extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
+ unsigned long *);
+diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c
+index e8c2c04143cd..c667e104a0c2 100644
+--- a/arch/tile/kernel/compat_signal.c
++++ b/arch/tile/kernel/compat_signal.c
+@@ -113,8 +113,6 @@ int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
+ if (!access_ok(VERIFY_READ, from, sizeof(struct compat_siginfo)))
+ return -EFAULT;
+
+- memset(to, 0, sizeof(*to));
+-
+ err = __get_user(to->si_signo, &from->si_signo);
+ err |= __get_user(to->si_errno, &from->si_errno);
+ err |= __get_user(to->si_code, &from->si_code);
+diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
+index 02c2eff7478d..4bd6c197563d 100644
+--- a/arch/x86/kernel/entry_64.S
++++ b/arch/x86/kernel/entry_64.S
+@@ -793,8 +793,6 @@ retint_kernel:
+ restore_c_regs_and_iret:
+ RESTORE_C_REGS
+ REMOVE_PT_GPREGS_FROM_STACK 8
+-
+-irq_return:
+ INTERRUPT_RETURN
+
+ ENTRY(native_iret)
+@@ -1413,11 +1411,12 @@ ENTRY(nmi)
+ * If the variable is not set and the stack is not the NMI
+ * stack then:
+ * o Set the special variable on the stack
+- * o Copy the interrupt frame into a "saved" location on the stack
+- * o Copy the interrupt frame into a "copy" location on the stack
++ * o Copy the interrupt frame into an "outermost" location on the
++ * stack
++ * o Copy the interrupt frame into an "iret" location on the stack
+ * o Continue processing the NMI
+ * If the variable is set or the previous stack is the NMI stack:
+- * o Modify the "copy" location to jump to the repeate_nmi
++ * o Modify the "iret" location to jump to the repeat_nmi
+ * o return back to the first NMI
+ *
+ * Now on exit of the first NMI, we first clear the stack variable
+@@ -1426,32 +1425,151 @@ ENTRY(nmi)
+ * a nested NMI that updated the copy interrupt stack frame, a
+ * jump will be made to the repeat_nmi code that will handle the second
+ * NMI.
++ *
++ * However, espfix prevents us from directly returning to userspace
++ * with a single IRET instruction. Similarly, IRET to user mode
++ * can fault. We therefore handle NMIs from user space like
++ * other IST entries.
+ */
+
+ /* Use %rdx as our temp variable throughout */
+ pushq_cfi %rdx
+ CFI_REL_OFFSET rdx, 0
+
++ testb $3, CS-RIP+8(%rsp)
++ jz .Lnmi_from_kernel
++
+ /*
+- * If %cs was not the kernel segment, then the NMI triggered in user
+- * space, which means it is definitely not nested.
++ * NMI from user mode. We need to run on the thread stack, but we
++ * can't go through the normal entry paths: NMIs are masked, and
++ * we don't want to enable interrupts, because then we'll end
++ * up in an awkward situation in which IRQs are on but NMIs
++ * are off.
+ */
+- cmpl $__KERNEL_CS, 16(%rsp)
+- jne first_nmi
++
++ SWAPGS
++ cld
++ movq %rsp, %rdx
++ movq PER_CPU_VAR(kernel_stack), %rsp
++ pushq 5*8(%rdx) /* pt_regs->ss */
++ pushq 4*8(%rdx) /* pt_regs->rsp */
++ pushq 3*8(%rdx) /* pt_regs->flags */
++ pushq 2*8(%rdx) /* pt_regs->cs */
++ pushq 1*8(%rdx) /* pt_regs->rip */
++ pushq $-1 /* pt_regs->orig_ax */
++ pushq %rdi /* pt_regs->di */
++ pushq %rsi /* pt_regs->si */
++ pushq (%rdx) /* pt_regs->dx */
++ pushq %rcx /* pt_regs->cx */
++ pushq %rax /* pt_regs->ax */
++ pushq %r8 /* pt_regs->r8 */
++ pushq %r9 /* pt_regs->r9 */
++ pushq %r10 /* pt_regs->r10 */
++ pushq %r11 /* pt_regs->r11 */
++ pushq %rbx /* pt_regs->rbx */
++ pushq %rbp /* pt_regs->rbp */
++ pushq %r12 /* pt_regs->r12 */
++ pushq %r13 /* pt_regs->r13 */
++ pushq %r14 /* pt_regs->r14 */
++ pushq %r15 /* pt_regs->r15 */
+
+ /*
+- * Check the special variable on the stack to see if NMIs are
+- * executing.
++ * At this point we no longer need to worry about stack damage
++ * due to nesting -- we're on the normal thread stack and we're
++ * done with the NMI stack.
++ */
++ movq %rsp, %rdi
++ movq $-1, %rsi
++ call do_nmi
++
++ /*
++ * Return back to user mode. We must *not* do the normal exit
++ * work, because we don't want to enable interrupts. Fortunately,
++ * do_nmi doesn't modify pt_regs.
++ */
++ SWAPGS
++ jmp restore_c_regs_and_iret
++
++.Lnmi_from_kernel:
++ /*
++ * Here's what our stack frame will look like:
++ * +---------------------------------------------------------+
++ * | original SS |
++ * | original Return RSP |
++ * | original RFLAGS |
++ * | original CS |
++ * | original RIP |
++ * +---------------------------------------------------------+
++ * | temp storage for rdx |
++ * +---------------------------------------------------------+
++ * | "NMI executing" variable |
++ * +---------------------------------------------------------+
++ * | iret SS } Copied from "outermost" frame |
++ * | iret Return RSP } on each loop iteration; overwritten |
++ * | iret RFLAGS } by a nested NMI to force another |
++ * | iret CS } iteration if needed. |
++ * | iret RIP } |
++ * +---------------------------------------------------------+
++ * | outermost SS } initialized in first_nmi; |
++ * | outermost Return RSP } will not be changed before |
++ * | outermost RFLAGS } NMI processing is done. |
++ * | outermost CS } Copied to "iret" frame on each |
++ * | outermost RIP } iteration. |
++ * +---------------------------------------------------------+
++ * | pt_regs |
++ * +---------------------------------------------------------+
++ *
++ * The "original" frame is used by hardware. Before re-enabling
++ * NMIs, we need to be done with it, and we need to leave enough
++ * space for the asm code here.
++ *
++ * We return by executing IRET while RSP points to the "iret" frame.
++ * That will either return for real or it will loop back into NMI
++ * processing.
++ *
++ * The "outermost" frame is copied to the "iret" frame on each
++ * iteration of the loop, so each iteration starts with the "iret"
++ * frame pointing to the final return target.
++ */
++
++ /*
++ * Determine whether we're a nested NMI.
++ *
++ * If we interrupted kernel code between repeat_nmi and
++ * end_repeat_nmi, then we are a nested NMI. We must not
++ * modify the "iret" frame because it's being written by
++ * the outer NMI. That's okay; the outer NMI handler is
++ * about to about to call do_nmi anyway, so we can just
++ * resume the outer NMI.
++ */
++
++ movq $repeat_nmi, %rdx
++ cmpq 8(%rsp), %rdx
++ ja 1f
++ movq $end_repeat_nmi, %rdx
++ cmpq 8(%rsp), %rdx
++ ja nested_nmi_out
++1:
++
++ /*
++ * Now check "NMI executing". If it's set, then we're nested.
++ * This will not detect if we interrupted an outer NMI just
++ * before IRET.
+ */
+ cmpl $1, -8(%rsp)
+ je nested_nmi
+
+ /*
+- * Now test if the previous stack was an NMI stack.
+- * We need the double check. We check the NMI stack to satisfy the
+- * race when the first NMI clears the variable before returning.
+- * We check the variable because the first NMI could be in a
+- * breakpoint routine using a breakpoint stack.
++ * Now test if the previous stack was an NMI stack. This covers
++ * the case where we interrupt an outer NMI after it clears
++ * "NMI executing" but before IRET. We need to be careful, though:
++ * there is one case in which RSP could point to the NMI stack
++ * despite there being no NMI active: naughty userspace controls
++ * RSP at the very beginning of the SYSCALL targets. We can
++ * pull a fast one on naughty userspace, though: we program
++ * SYSCALL to mask DF, so userspace cannot cause DF to be set
++ * if it controls the kernel's RSP. We set DF before we clear
++ * "NMI executing".
+ */
+ lea 6*8(%rsp), %rdx
+ /* Compare the NMI stack (rdx) with the stack we came from (4*8(%rsp)) */
+@@ -1462,25 +1580,21 @@ ENTRY(nmi)
+ cmpq %rdx, 4*8(%rsp)
+ /* If it is below the NMI stack, it is a normal NMI */
+ jb first_nmi
+- /* Ah, it is within the NMI stack, treat it as nested */
++
++ /* Ah, it is within the NMI stack. */
++
++ testb $(X86_EFLAGS_DF >> 8), (3*8 + 1)(%rsp)
++ jz first_nmi /* RSP was user controlled. */
++
++ /* This is a nested NMI. */
+
+ CFI_REMEMBER_STATE
+
+ nested_nmi:
+ /*
+- * Do nothing if we interrupted the fixup in repeat_nmi.
+- * It's about to repeat the NMI handler, so we are fine
+- * with ignoring this one.
++ * Modify the "iret" frame to point to repeat_nmi, forcing another
++ * iteration of NMI handling.
+ */
+- movq $repeat_nmi, %rdx
+- cmpq 8(%rsp), %rdx
+- ja 1f
+- movq $end_repeat_nmi, %rdx
+- cmpq 8(%rsp), %rdx
+- ja nested_nmi_out
+-
+-1:
+- /* Set up the interrupted NMIs stack to jump to repeat_nmi */
+ leaq -1*8(%rsp), %rdx
+ movq %rdx, %rsp
+ CFI_ADJUST_CFA_OFFSET 1*8
+@@ -1499,60 +1613,23 @@ nested_nmi_out:
+ popq_cfi %rdx
+ CFI_RESTORE rdx
+
+- /* No need to check faults here */
++ /* We are returning to kernel mode, so this cannot result in a fault. */
+ INTERRUPT_RETURN
+
+ CFI_RESTORE_STATE
+ first_nmi:
+- /*
+- * Because nested NMIs will use the pushed location that we
+- * stored in rdx, we must keep that space available.
+- * Here's what our stack frame will look like:
+- * +-------------------------+
+- * | original SS |
+- * | original Return RSP |
+- * | original RFLAGS |
+- * | original CS |
+- * | original RIP |
+- * +-------------------------+
+- * | temp storage for rdx |
+- * +-------------------------+
+- * | NMI executing variable |
+- * +-------------------------+
+- * | copied SS |
+- * | copied Return RSP |
+- * | copied RFLAGS |
+- * | copied CS |
+- * | copied RIP |
+- * +-------------------------+
+- * | Saved SS |
+- * | Saved Return RSP |
+- * | Saved RFLAGS |
+- * | Saved CS |
+- * | Saved RIP |
+- * +-------------------------+
+- * | pt_regs |
+- * +-------------------------+
+- *
+- * The saved stack frame is used to fix up the copied stack frame
+- * that a nested NMI may change to make the interrupted NMI iret jump
+- * to the repeat_nmi. The original stack frame and the temp storage
+- * is also used by nested NMIs and can not be trusted on exit.
+- */
+- /* Do not pop rdx, nested NMIs will corrupt that part of the stack */
++ /* Restore rdx. */
+ movq (%rsp), %rdx
+ CFI_RESTORE rdx
+
+- /* Set the NMI executing variable on the stack. */
++ /* Set "NMI executing" on the stack. */
+ pushq_cfi $1
+
+- /*
+- * Leave room for the "copied" frame
+- */
++ /* Leave room for the "iret" frame */
+ subq $(5*8), %rsp
+ CFI_ADJUST_CFA_OFFSET 5*8
+
+- /* Copy the stack frame to the Saved frame */
++ /* Copy the "original" frame to the "outermost" frame */
+ .rept 5
+ pushq_cfi 11*8(%rsp)
+ .endr
+@@ -1560,6 +1637,7 @@ first_nmi:
+
+ /* Everything up to here is safe from nested NMIs */
+
++repeat_nmi:
+ /*
+ * If there was a nested NMI, the first NMI's iret will return
+ * here. But NMIs are still enabled and we can take another
+@@ -1568,16 +1646,21 @@ first_nmi:
+ * it will just return, as we are about to repeat an NMI anyway.
+ * This makes it safe to copy to the stack frame that a nested
+ * NMI will update.
+- */
+-repeat_nmi:
+- /*
+- * Update the stack variable to say we are still in NMI (the update
+- * is benign for the non-repeat case, where 1 was pushed just above
+- * to this very stack slot).
++ *
++ * RSP is pointing to "outermost RIP". gsbase is unknown, but, if
++ * we're repeating an NMI, gsbase has the same value that it had on
++ * the first iteration. paranoid_entry will load the kernel
++ * gsbase if needed before we call do_nmi.
++ *
++ * Set "NMI executing" in case we came back here via IRET.
+ */
+ movq $1, 10*8(%rsp)
+
+- /* Make another copy, this one may be modified by nested NMIs */
++ /*
++ * Copy the "outermost" frame to the "iret" frame. NMIs that nest
++ * here must not modify the "iret" frame while we're writing to
++ * it or it will end up containing garbage.
++ */
+ addq $(10*8), %rsp
+ CFI_ADJUST_CFA_OFFSET -10*8
+ .rept 5
+@@ -1588,9 +1671,9 @@ repeat_nmi:
+ end_repeat_nmi:
+
+ /*
+- * Everything below this point can be preempted by a nested
+- * NMI if the first NMI took an exception and reset our iret stack
+- * so that we repeat another NMI.
++ * Everything below this point can be preempted by a nested NMI.
++ * If this happens, then the inner NMI will change the "iret"
++ * frame to point back to repeat_nmi.
+ */
+ pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */
+ ALLOC_PT_GPREGS_ON_STACK
+@@ -1605,29 +1688,11 @@ end_repeat_nmi:
+ call paranoid_entry
+ DEFAULT_FRAME 0
+
+- /*
+- * Save off the CR2 register. If we take a page fault in the NMI then
+- * it could corrupt the CR2 value. If the NMI preempts a page fault
+- * handler before it was able to read the CR2 register, and then the
+- * NMI itself takes a page fault, the page fault that was preempted
+- * will read the information from the NMI page fault and not the
+- * origin fault. Save it off and restore it if it changes.
+- * Use the r12 callee-saved register.
+- */
+- movq %cr2, %r12
+-
+ /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */
+ movq %rsp,%rdi
+ movq $-1,%rsi
+ call do_nmi
+
+- /* Did the NMI take a page fault? Restore cr2 if it did */
+- movq %cr2, %rcx
+- cmpq %rcx, %r12
+- je 1f
+- movq %r12, %cr2
+-1:
+-
+ testl %ebx,%ebx /* swapgs needed? */
+ jnz nmi_restore
+ nmi_swapgs:
+@@ -1635,12 +1700,27 @@ nmi_swapgs:
+ nmi_restore:
+ RESTORE_EXTRA_REGS
+ RESTORE_C_REGS
+- /* Pop the extra iret frame at once */
++
++ /* Point RSP at the "iret" frame. */
+ REMOVE_PT_GPREGS_FROM_STACK 6*8
+
+- /* Clear the NMI executing stack variable */
+- movq $0, 5*8(%rsp)
+- jmp irq_return
++ /*
++ * Clear "NMI executing". Set DF first so that we can easily
++ * distinguish the remaining code between here and IRET from
++ * the SYSCALL entry and exit paths. On a native kernel, we
++ * could just inspect RIP, but, on paravirt kernels,
++ * INTERRUPT_RETURN can translate into a jump into a
++ * hypercall page.
++ */
++ std
++ movq $0, 5*8(%rsp) /* clear "NMI executing" */
++
++ /*
++ * INTERRUPT_RETURN reads the "iret" frame and exits the NMI
++ * stack in a single instruction. We are returning to kernel
++ * mode, so this cannot result in a fault.
++ */
++ INTERRUPT_RETURN
+ CFI_ENDPROC
+ END(nmi)
+
+diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
+index c3e985d1751c..d05bd2e2ee91 100644
+--- a/arch/x86/kernel/nmi.c
++++ b/arch/x86/kernel/nmi.c
+@@ -408,15 +408,15 @@ static void default_do_nmi(struct pt_regs *regs)
+ NOKPROBE_SYMBOL(default_do_nmi);
+
+ /*
+- * NMIs can hit breakpoints which will cause it to lose its
+- * NMI context with the CPU when the breakpoint does an iret.
+- */
+-#ifdef CONFIG_X86_32
+-/*
+- * For i386, NMIs use the same stack as the kernel, and we can
+- * add a workaround to the iret problem in C (preventing nested
+- * NMIs if an NMI takes a trap). Simply have 3 states the NMI
+- * can be in:
++ * NMIs can page fault or hit breakpoints which will cause it to lose
++ * its NMI context with the CPU when the breakpoint or page fault does an IRET.
++ *
++ * As a result, NMIs can nest if NMIs get unmasked due an IRET during
++ * NMI processing. On x86_64, the asm glue protects us from nested NMIs
++ * if the outer NMI came from kernel mode, but we can still nest if the
++ * outer NMI came from user mode.
++ *
++ * To handle these nested NMIs, we have three states:
+ *
+ * 1) not running
+ * 2) executing
+@@ -430,15 +430,14 @@ NOKPROBE_SYMBOL(default_do_nmi);
+ * (Note, the latch is binary, thus multiple NMIs triggering,
+ * when one is running, are ignored. Only one NMI is restarted.)
+ *
+- * If an NMI hits a breakpoint that executes an iret, another
+- * NMI can preempt it. We do not want to allow this new NMI
+- * to run, but we want to execute it when the first one finishes.
+- * We set the state to "latched", and the exit of the first NMI will
+- * perform a dec_return, if the result is zero (NOT_RUNNING), then
+- * it will simply exit the NMI handler. If not, the dec_return
+- * would have set the state to NMI_EXECUTING (what we want it to
+- * be when we are running). In this case, we simply jump back
+- * to rerun the NMI handler again, and restart the 'latched' NMI.
++ * If an NMI executes an iret, another NMI can preempt it. We do not
++ * want to allow this new NMI to run, but we want to execute it when the
++ * first one finishes. We set the state to "latched", and the exit of
++ * the first NMI will perform a dec_return, if the result is zero
++ * (NOT_RUNNING), then it will simply exit the NMI handler. If not, the
++ * dec_return would have set the state to NMI_EXECUTING (what we want it
++ * to be when we are running). In this case, we simply jump back to
++ * rerun the NMI handler again, and restart the 'latched' NMI.
+ *
+ * No trap (breakpoint or page fault) should be hit before nmi_restart,
+ * thus there is no race between the first check of state for NOT_RUNNING
+@@ -461,49 +460,36 @@ enum nmi_states {
+ static DEFINE_PER_CPU(enum nmi_states, nmi_state);
+ static DEFINE_PER_CPU(unsigned long, nmi_cr2);
+
+-#define nmi_nesting_preprocess(regs) \
+- do { \
+- if (this_cpu_read(nmi_state) != NMI_NOT_RUNNING) { \
+- this_cpu_write(nmi_state, NMI_LATCHED); \
+- return; \
+- } \
+- this_cpu_write(nmi_state, NMI_EXECUTING); \
+- this_cpu_write(nmi_cr2, read_cr2()); \
+- } while (0); \
+- nmi_restart:
+-
+-#define nmi_nesting_postprocess() \
+- do { \
+- if (unlikely(this_cpu_read(nmi_cr2) != read_cr2())) \
+- write_cr2(this_cpu_read(nmi_cr2)); \
+- if (this_cpu_dec_return(nmi_state)) \
+- goto nmi_restart; \
+- } while (0)
+-#else /* x86_64 */
++#ifdef CONFIG_X86_64
+ /*
+- * In x86_64 things are a bit more difficult. This has the same problem
+- * where an NMI hitting a breakpoint that calls iret will remove the
+- * NMI context, allowing a nested NMI to enter. What makes this more
+- * difficult is that both NMIs and breakpoints have their own stack.
+- * When a new NMI or breakpoint is executed, the stack is set to a fixed
+- * point. If an NMI is nested, it will have its stack set at that same
+- * fixed address that the first NMI had, and will start corrupting the
+- * stack. This is handled in entry_64.S, but the same problem exists with
+- * the breakpoint stack.
++ * In x86_64, we need to handle breakpoint -> NMI -> breakpoint. Without
++ * some care, the inner breakpoint will clobber the outer breakpoint's
++ * stack.
+ *
+- * If a breakpoint is being processed, and the debug stack is being used,
+- * if an NMI comes in and also hits a breakpoint, the stack pointer
+- * will be set to the same fixed address as the breakpoint that was
+- * interrupted, causing that stack to be corrupted. To handle this case,
+- * check if the stack that was interrupted is the debug stack, and if
+- * so, change the IDT so that new breakpoints will use the current stack
+- * and not switch to the fixed address. On return of the NMI, switch back
+- * to the original IDT.
++ * If a breakpoint is being processed, and the debug stack is being
++ * used, if an NMI comes in and also hits a breakpoint, the stack
++ * pointer will be set to the same fixed address as the breakpoint that
++ * was interrupted, causing that stack to be corrupted. To handle this
++ * case, check if the stack that was interrupted is the debug stack, and
++ * if so, change the IDT so that new breakpoints will use the current
++ * stack and not switch to the fixed address. On return of the NMI,
++ * switch back to the original IDT.
+ */
+ static DEFINE_PER_CPU(int, update_debug_stack);
++#endif
+
+-static inline void nmi_nesting_preprocess(struct pt_regs *regs)
++dotraplinkage notrace void
++do_nmi(struct pt_regs *regs, long error_code)
+ {
++ if (this_cpu_read(nmi_state) != NMI_NOT_RUNNING) {
++ this_cpu_write(nmi_state, NMI_LATCHED);
++ return;
++ }
++ this_cpu_write(nmi_state, NMI_EXECUTING);
++ this_cpu_write(nmi_cr2, read_cr2());
++nmi_restart:
++
++#ifdef CONFIG_X86_64
+ /*
+ * If we interrupted a breakpoint, it is possible that
+ * the nmi handler will have breakpoints too. We need to
+@@ -514,22 +500,8 @@ static inline void nmi_nesting_preprocess(struct pt_regs *regs)
+ debug_stack_set_zero();
+ this_cpu_write(update_debug_stack, 1);
+ }
+-}
+-
+-static inline void nmi_nesting_postprocess(void)
+-{
+- if (unlikely(this_cpu_read(update_debug_stack))) {
+- debug_stack_reset();
+- this_cpu_write(update_debug_stack, 0);
+- }
+-}
+ #endif
+
+-dotraplinkage notrace void
+-do_nmi(struct pt_regs *regs, long error_code)
+-{
+- nmi_nesting_preprocess(regs);
+-
+ nmi_enter();
+
+ inc_irq_stat(__nmi_count);
+@@ -539,8 +511,17 @@ do_nmi(struct pt_regs *regs, long error_code)
+
+ nmi_exit();
+
+- /* On i386, may loop back to preprocess */
+- nmi_nesting_postprocess();
++#ifdef CONFIG_X86_64
++ if (unlikely(this_cpu_read(update_debug_stack))) {
++ debug_stack_reset();
++ this_cpu_write(update_debug_stack, 0);
++ }
++#endif
++
++ if (unlikely(this_cpu_read(nmi_cr2) != read_cr2()))
++ write_cr2(this_cpu_read(nmi_cr2));
++ if (this_cpu_dec_return(nmi_state))
++ goto nmi_restart;
+ }
+ NOKPROBE_SYMBOL(do_nmi);
+
+diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
+index 9d28383fc1e7..c4ea87eedf8a 100644
+--- a/arch/x86/kvm/lapic.h
++++ b/arch/x86/kvm/lapic.h
+@@ -150,7 +150,7 @@ static inline bool kvm_apic_vid_enabled(struct kvm *kvm)
+
+ static inline bool kvm_apic_has_events(struct kvm_vcpu *vcpu)
+ {
+- return vcpu->arch.apic->pending_events;
++ return kvm_vcpu_has_lapic(vcpu) && vcpu->arch.apic->pending_events;
+ }
+
+ bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector);
+diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
+index 46957ead3060..a671e837228d 100644
+--- a/arch/x86/xen/enlighten.c
++++ b/arch/x86/xen/enlighten.c
+@@ -483,6 +483,7 @@ static void set_aliased_prot(void *v, pgprot_t prot)
+ pte_t pte;
+ unsigned long pfn;
+ struct page *page;
++ unsigned char dummy;
+
+ ptep = lookup_address((unsigned long)v, &level);
+ BUG_ON(ptep == NULL);
+@@ -492,6 +493,32 @@ static void set_aliased_prot(void *v, pgprot_t prot)
+
+ pte = pfn_pte(pfn, prot);
+
++ /*
++ * Careful: update_va_mapping() will fail if the virtual address
++ * we're poking isn't populated in the page tables. We don't
++ * need to worry about the direct map (that's always in the page
++ * tables), but we need to be careful about vmap space. In
++ * particular, the top level page table can lazily propagate
++ * entries between processes, so if we've switched mms since we
++ * vmapped the target in the first place, we might not have the
++ * top-level page table entry populated.
++ *
++ * We disable preemption because we want the same mm active when
++ * we probe the target and when we issue the hypercall. We'll
++ * have the same nominal mm, but if we're a kernel thread, lazy
++ * mm dropping could change our pgd.
++ *
++ * Out of an abundance of caution, this uses __get_user() to fault
++ * in the target address just in case there's some obscure case
++ * in which the target address isn't readable.
++ */
++
++ preempt_disable();
++
++ pagefault_disable(); /* Avoid warnings due to being atomic. */
++ __get_user(dummy, (unsigned char __user __force *)v);
++ pagefault_enable();
++
+ if (HYPERVISOR_update_va_mapping((unsigned long)v, pte, 0))
+ BUG();
+
+@@ -503,6 +530,8 @@ static void set_aliased_prot(void *v, pgprot_t prot)
+ BUG();
+ } else
+ kmap_flush_unused();
++
++ preempt_enable();
+ }
+
+ static void xen_alloc_ldt(struct desc_struct *ldt, unsigned entries)
+@@ -510,6 +539,17 @@ static void xen_alloc_ldt(struct desc_struct *ldt, unsigned entries)
+ const unsigned entries_per_page = PAGE_SIZE / LDT_ENTRY_SIZE;
+ int i;
+
++ /*
++ * We need to mark the all aliases of the LDT pages RO. We
++ * don't need to call vm_flush_aliases(), though, since that's
++ * only responsible for flushing aliases out the TLBs, not the
++ * page tables, and Xen will flush the TLB for us if needed.
++ *
++ * To avoid confusing future readers: none of this is necessary
++ * to load the LDT. The hypervisor only checks this when the
++ * LDT is faulted in due to subsequent descriptor access.
++ */
++
+ for(i = 0; i < entries; i += entries_per_page)
+ set_aliased_prot(ldt + i, PAGE_KERNEL_RO);
+ }
+diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
+index 53f253574abe..010ce0b1f517 100644
+--- a/drivers/block/rbd.c
++++ b/drivers/block/rbd.c
+@@ -522,6 +522,7 @@ void rbd_warn(struct rbd_device *rbd_dev, const char *fmt, ...)
+ # define rbd_assert(expr) ((void) 0)
+ #endif /* !RBD_DEBUG */
+
++static void rbd_osd_copyup_callback(struct rbd_obj_request *obj_request);
+ static int rbd_img_obj_request_submit(struct rbd_obj_request *obj_request);
+ static void rbd_img_parent_read(struct rbd_obj_request *obj_request);
+ static void rbd_dev_remove_parent(struct rbd_device *rbd_dev);
+@@ -1797,6 +1798,16 @@ static void rbd_osd_stat_callback(struct rbd_obj_request *obj_request)
+ obj_request_done_set(obj_request);
+ }
+
++static void rbd_osd_call_callback(struct rbd_obj_request *obj_request)
++{
++ dout("%s: obj %p\n", __func__, obj_request);
++
++ if (obj_request_img_data_test(obj_request))
++ rbd_osd_copyup_callback(obj_request);
++ else
++ obj_request_done_set(obj_request);
++}
++
+ static void rbd_osd_req_callback(struct ceph_osd_request *osd_req,
+ struct ceph_msg *msg)
+ {
+@@ -1845,6 +1856,8 @@ static void rbd_osd_req_callback(struct ceph_osd_request *osd_req,
+ rbd_osd_discard_callback(obj_request);
+ break;
+ case CEPH_OSD_OP_CALL:
++ rbd_osd_call_callback(obj_request);
++ break;
+ case CEPH_OSD_OP_NOTIFY_ACK:
+ case CEPH_OSD_OP_WATCH:
+ rbd_osd_trivial_callback(obj_request);
+@@ -2509,13 +2522,15 @@ out_unwind:
+ }
+
+ static void
+-rbd_img_obj_copyup_callback(struct rbd_obj_request *obj_request)
++rbd_osd_copyup_callback(struct rbd_obj_request *obj_request)
+ {
+ struct rbd_img_request *img_request;
+ struct rbd_device *rbd_dev;
+ struct page **pages;
+ u32 page_count;
+
++ dout("%s: obj %p\n", __func__, obj_request);
++
+ rbd_assert(obj_request->type == OBJ_REQUEST_BIO ||
+ obj_request->type == OBJ_REQUEST_NODATA);
+ rbd_assert(obj_request_img_data_test(obj_request));
+@@ -2542,9 +2557,7 @@ rbd_img_obj_copyup_callback(struct rbd_obj_request *obj_request)
+ if (!obj_request->result)
+ obj_request->xferred = obj_request->length;
+
+- /* Finish up with the normal image object callback */
+-
+- rbd_img_obj_callback(obj_request);
++ obj_request_done_set(obj_request);
+ }
+
+ static void
+@@ -2629,7 +2642,6 @@ rbd_img_obj_parent_read_full_callback(struct rbd_img_request *img_request)
+
+ /* All set, send it off. */
+
+- orig_request->callback = rbd_img_obj_copyup_callback;
+ osdc = &rbd_dev->rbd_client->client->osdc;
+ img_result = rbd_obj_request_submit(osdc, orig_request);
+ if (!img_result)
+diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
+index da8faf78536a..5643b65cee20 100644
+--- a/drivers/char/hw_random/core.c
++++ b/drivers/char/hw_random/core.c
+@@ -429,7 +429,7 @@ static int hwrng_fillfn(void *unused)
+ static void start_khwrngd(void)
+ {
+ hwrng_fill = kthread_run(hwrng_fillfn, NULL, "hwrng");
+- if (hwrng_fill == ERR_PTR(-ENOMEM)) {
++ if (IS_ERR(hwrng_fill)) {
+ pr_err("hwrng_fill thread creation failed");
+ hwrng_fill = NULL;
+ }
+diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
+index a43048b5b05f..3c1a123f909c 100644
+--- a/drivers/char/i8k.c
++++ b/drivers/char/i8k.c
+@@ -900,6 +900,21 @@ static struct dmi_system_id i8k_dmi_table[] __initdata = {
+
+ MODULE_DEVICE_TABLE(dmi, i8k_dmi_table);
+
++static struct dmi_system_id i8k_blacklist_dmi_table[] __initdata = {
++ {
++ /*
++ * CPU fan speed going up and down on Dell Studio XPS 8100
++ * for unknown reasons.
++ */
++ .ident = "Dell Studio XPS 8100",
++ .matches = {
++ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
++ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Studio XPS 8100"),
++ },
++ },
++ { }
++};
++
+ /*
+ * Probe for the presence of a supported laptop.
+ */
+@@ -911,7 +926,8 @@ static int __init i8k_probe(void)
+ /*
+ * Get DMI information
+ */
+- if (!dmi_check_system(i8k_dmi_table)) {
++ if (!dmi_check_system(i8k_dmi_table) ||
++ dmi_check_system(i8k_blacklist_dmi_table)) {
+ if (!ignore_dmi && !force)
+ return -ENODEV;
+
+diff --git a/drivers/clk/keystone/pll.c b/drivers/clk/keystone/pll.c
+index 0dd8a4b12747..4a375ead70e9 100644
+--- a/drivers/clk/keystone/pll.c
++++ b/drivers/clk/keystone/pll.c
+@@ -37,7 +37,8 @@
+ * Main PLL or any other PLLs in the device such as ARM PLL, DDR PLL
+ * or PA PLL available on keystone2. These PLLs are controlled by
+ * this register. Main PLL is controlled by a PLL controller.
+- * @pllm: PLL register map address
++ * @pllm: PLL register map address for multiplier bits
++ * @pllod: PLL register map address for post divider bits
+ * @pll_ctl0: PLL controller map address
+ * @pllm_lower_mask: multiplier lower mask
+ * @pllm_upper_mask: multiplier upper mask
+@@ -53,6 +54,7 @@ struct clk_pll_data {
+ u32 phy_pllm;
+ u32 phy_pll_ctl0;
+ void __iomem *pllm;
++ void __iomem *pllod;
+ void __iomem *pll_ctl0;
+ u32 pllm_lower_mask;
+ u32 pllm_upper_mask;
+@@ -102,7 +104,11 @@ static unsigned long clk_pllclk_recalc(struct clk_hw *hw,
+ /* read post divider from od bits*/
+ postdiv = ((val & pll_data->clkod_mask) >>
+ pll_data->clkod_shift) + 1;
+- else
++ else if (pll_data->pllod) {
++ postdiv = readl(pll_data->pllod);
++ postdiv = ((postdiv & pll_data->clkod_mask) >>
++ pll_data->clkod_shift) + 1;
++ } else
+ postdiv = pll_data->postdiv;
+
+ rate /= (prediv + 1);
+@@ -172,12 +178,21 @@ static void __init _of_pll_clk_init(struct device_node *node, bool pllctrl)
+ /* assume the PLL has output divider register bits */
+ pll_data->clkod_mask = CLKOD_MASK;
+ pll_data->clkod_shift = CLKOD_SHIFT;
++
++ /*
++ * Check if there is an post-divider register. If not
++ * assume od bits are part of control register.
++ */
++ i = of_property_match_string(node, "reg-names",
++ "post-divider");
++ pll_data->pllod = of_iomap(node, i);
+ }
+
+ i = of_property_match_string(node, "reg-names", "control");
+ pll_data->pll_ctl0 = of_iomap(node, i);
+ if (!pll_data->pll_ctl0) {
+ pr_err("%s: ioremap failed\n", __func__);
++ iounmap(pll_data->pllod);
+ goto out;
+ }
+
+@@ -193,6 +208,7 @@ static void __init _of_pll_clk_init(struct device_node *node, bool pllctrl)
+ pll_data->pllm = of_iomap(node, i);
+ if (!pll_data->pllm) {
+ iounmap(pll_data->pll_ctl0);
++ iounmap(pll_data->pllod);
+ goto out;
+ }
+ }
+diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
+index 48f453555f1f..ede9e9e3c419 100644
+--- a/drivers/crypto/ixp4xx_crypto.c
++++ b/drivers/crypto/ixp4xx_crypto.c
+@@ -904,7 +904,6 @@ static int ablk_perform(struct ablkcipher_request *req, int encrypt)
+ crypt->mode |= NPE_OP_NOT_IN_PLACE;
+ /* This was never tested by Intel
+ * for more than one dst buffer, I think. */
+- BUG_ON(req->dst->length < nbytes);
+ req_ctx->dst = NULL;
+ if (!chainup_buffers(dev, req->dst, nbytes, &dst_hook,
+ flags, DMA_FROM_DEVICE))
+diff --git a/drivers/crypto/nx/nx-aes-ccm.c b/drivers/crypto/nx/nx-aes-ccm.c
+index 67f80813a06f..e4311ce0cd78 100644
+--- a/drivers/crypto/nx/nx-aes-ccm.c
++++ b/drivers/crypto/nx/nx-aes-ccm.c
+@@ -494,8 +494,9 @@ out:
+ static int ccm4309_aes_nx_encrypt(struct aead_request *req)
+ {
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
++ struct nx_gcm_rctx *rctx = aead_request_ctx(req);
+ struct blkcipher_desc desc;
+- u8 *iv = nx_ctx->priv.ccm.iv;
++ u8 *iv = rctx->iv;
+
+ iv[0] = 3;
+ memcpy(iv + 1, nx_ctx->priv.ccm.nonce, 3);
+@@ -525,8 +526,9 @@ static int ccm_aes_nx_encrypt(struct aead_request *req)
+ static int ccm4309_aes_nx_decrypt(struct aead_request *req)
+ {
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
++ struct nx_gcm_rctx *rctx = aead_request_ctx(req);
+ struct blkcipher_desc desc;
+- u8 *iv = nx_ctx->priv.ccm.iv;
++ u8 *iv = rctx->iv;
+
+ iv[0] = 3;
+ memcpy(iv + 1, nx_ctx->priv.ccm.nonce, 3);
+diff --git a/drivers/crypto/nx/nx-aes-ctr.c b/drivers/crypto/nx/nx-aes-ctr.c
+index 2617cd4d54dd..dd7e9f3f5b6b 100644
+--- a/drivers/crypto/nx/nx-aes-ctr.c
++++ b/drivers/crypto/nx/nx-aes-ctr.c
+@@ -72,7 +72,7 @@ static int ctr3686_aes_nx_set_key(struct crypto_tfm *tfm,
+ if (key_len < CTR_RFC3686_NONCE_SIZE)
+ return -EINVAL;
+
+- memcpy(nx_ctx->priv.ctr.iv,
++ memcpy(nx_ctx->priv.ctr.nonce,
+ in_key + key_len - CTR_RFC3686_NONCE_SIZE,
+ CTR_RFC3686_NONCE_SIZE);
+
+@@ -131,14 +131,15 @@ static int ctr3686_aes_nx_crypt(struct blkcipher_desc *desc,
+ unsigned int nbytes)
+ {
+ struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm);
+- u8 *iv = nx_ctx->priv.ctr.iv;
++ u8 iv[16];
+
++ memcpy(iv, nx_ctx->priv.ctr.nonce, CTR_RFC3686_IV_SIZE);
+ memcpy(iv + CTR_RFC3686_NONCE_SIZE,
+ desc->info, CTR_RFC3686_IV_SIZE);
+ iv[12] = iv[13] = iv[14] = 0;
+ iv[15] = 1;
+
+- desc->info = nx_ctx->priv.ctr.iv;
++ desc->info = iv;
+
+ return ctr_aes_nx_crypt(desc, dst, src, nbytes);
+ }
+diff --git a/drivers/crypto/nx/nx-aes-gcm.c b/drivers/crypto/nx/nx-aes-gcm.c
+index 88c562434bc0..c6ebeb644db4 100644
+--- a/drivers/crypto/nx/nx-aes-gcm.c
++++ b/drivers/crypto/nx/nx-aes-gcm.c
+@@ -330,6 +330,7 @@ out:
+ static int gcm_aes_nx_crypt(struct aead_request *req, int enc)
+ {
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
++ struct nx_gcm_rctx *rctx = aead_request_ctx(req);
+ struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
+ struct blkcipher_desc desc;
+ unsigned int nbytes = req->cryptlen;
+@@ -339,7 +340,7 @@ static int gcm_aes_nx_crypt(struct aead_request *req, int enc)
+
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
+
+- desc.info = nx_ctx->priv.gcm.iv;
++ desc.info = rctx->iv;
+ /* initialize the counter */
+ *(u32 *)(desc.info + NX_GCM_CTR_OFFSET) = 1;
+
+@@ -434,8 +435,8 @@ out:
+
+ static int gcm_aes_nx_encrypt(struct aead_request *req)
+ {
+- struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
+- char *iv = nx_ctx->priv.gcm.iv;
++ struct nx_gcm_rctx *rctx = aead_request_ctx(req);
++ char *iv = rctx->iv;
+
+ memcpy(iv, req->iv, 12);
+
+@@ -444,8 +445,8 @@ static int gcm_aes_nx_encrypt(struct aead_request *req)
+
+ static int gcm_aes_nx_decrypt(struct aead_request *req)
+ {
+- struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
+- char *iv = nx_ctx->priv.gcm.iv;
++ struct nx_gcm_rctx *rctx = aead_request_ctx(req);
++ char *iv = rctx->iv;
+
+ memcpy(iv, req->iv, 12);
+
+@@ -455,7 +456,8 @@ static int gcm_aes_nx_decrypt(struct aead_request *req)
+ static int gcm4106_aes_nx_encrypt(struct aead_request *req)
+ {
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
+- char *iv = nx_ctx->priv.gcm.iv;
++ struct nx_gcm_rctx *rctx = aead_request_ctx(req);
++ char *iv = rctx->iv;
+ char *nonce = nx_ctx->priv.gcm.nonce;
+
+ memcpy(iv, nonce, NX_GCM4106_NONCE_LEN);
+@@ -467,7 +469,8 @@ static int gcm4106_aes_nx_encrypt(struct aead_request *req)
+ static int gcm4106_aes_nx_decrypt(struct aead_request *req)
+ {
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
+- char *iv = nx_ctx->priv.gcm.iv;
++ struct nx_gcm_rctx *rctx = aead_request_ctx(req);
++ char *iv = rctx->iv;
+ char *nonce = nx_ctx->priv.gcm.nonce;
+
+ memcpy(iv, nonce, NX_GCM4106_NONCE_LEN);
+diff --git a/drivers/crypto/nx/nx-aes-xcbc.c b/drivers/crypto/nx/nx-aes-xcbc.c
+index 8c2faffab4a3..c2f7d4befb55 100644
+--- a/drivers/crypto/nx/nx-aes-xcbc.c
++++ b/drivers/crypto/nx/nx-aes-xcbc.c
+@@ -42,6 +42,7 @@ static int nx_xcbc_set_key(struct crypto_shash *desc,
+ unsigned int key_len)
+ {
+ struct nx_crypto_ctx *nx_ctx = crypto_shash_ctx(desc);
++ struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
+
+ switch (key_len) {
+ case AES_KEYSIZE_128:
+@@ -51,7 +52,7 @@ static int nx_xcbc_set_key(struct crypto_shash *desc,
+ return -EINVAL;
+ }
+
+- memcpy(nx_ctx->priv.xcbc.key, in_key, key_len);
++ memcpy(csbcpb->cpb.aes_xcbc.key, in_key, key_len);
+
+ return 0;
+ }
+@@ -148,32 +149,29 @@ out:
+ return rc;
+ }
+
+-static int nx_xcbc_init(struct shash_desc *desc)
++static int nx_crypto_ctx_aes_xcbc_init2(struct crypto_tfm *tfm)
+ {
+- struct xcbc_state *sctx = shash_desc_ctx(desc);
+- struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
++ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
+ struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
+- struct nx_sg *out_sg;
+- int len;
++ int err;
+
+- nx_ctx_init(nx_ctx, HCOP_FC_AES);
++ err = nx_crypto_ctx_aes_xcbc_init(tfm);
++ if (err)
++ return err;
+
+- memset(sctx, 0, sizeof *sctx);
++ nx_ctx_init(nx_ctx, HCOP_FC_AES);
+
+ NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128);
+ csbcpb->cpb.hdr.mode = NX_MODE_AES_XCBC_MAC;
+
+- memcpy(csbcpb->cpb.aes_xcbc.key, nx_ctx->priv.xcbc.key, AES_BLOCK_SIZE);
+- memset(nx_ctx->priv.xcbc.key, 0, sizeof *nx_ctx->priv.xcbc.key);
+-
+- len = AES_BLOCK_SIZE;
+- out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
+- &len, nx_ctx->ap->sglen);
++ return 0;
++}
+
+- if (len != AES_BLOCK_SIZE)
+- return -EINVAL;
++static int nx_xcbc_init(struct shash_desc *desc)
++{
++ struct xcbc_state *sctx = shash_desc_ctx(desc);
+
+- nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
++ memset(sctx, 0, sizeof *sctx);
+
+ return 0;
+ }
+@@ -186,6 +184,7 @@ static int nx_xcbc_update(struct shash_desc *desc,
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+ struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
+ struct nx_sg *in_sg;
++ struct nx_sg *out_sg;
+ u32 to_process = 0, leftover, total;
+ unsigned int max_sg_len;
+ unsigned long irq_flags;
+@@ -213,6 +212,17 @@ static int nx_xcbc_update(struct shash_desc *desc,
+ max_sg_len = min_t(u64, max_sg_len,
+ nx_ctx->ap->databytelen/NX_PAGE_SIZE);
+
++ data_len = AES_BLOCK_SIZE;
++ out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
++ &len, nx_ctx->ap->sglen);
++
++ if (data_len != AES_BLOCK_SIZE) {
++ rc = -EINVAL;
++ goto out;
++ }
++
++ nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
++
+ do {
+ to_process = total - to_process;
+ to_process = to_process & ~(AES_BLOCK_SIZE - 1);
+@@ -235,8 +245,10 @@ static int nx_xcbc_update(struct shash_desc *desc,
+ (u8 *) sctx->buffer,
+ &data_len,
+ max_sg_len);
+- if (data_len != sctx->count)
+- return -EINVAL;
++ if (data_len != sctx->count) {
++ rc = -EINVAL;
++ goto out;
++ }
+ }
+
+ data_len = to_process - sctx->count;
+@@ -245,8 +257,10 @@ static int nx_xcbc_update(struct shash_desc *desc,
+ &data_len,
+ max_sg_len);
+
+- if (data_len != to_process - sctx->count)
+- return -EINVAL;
++ if (data_len != to_process - sctx->count) {
++ rc = -EINVAL;
++ goto out;
++ }
+
+ nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) *
+ sizeof(struct nx_sg);
+@@ -325,15 +339,19 @@ static int nx_xcbc_final(struct shash_desc *desc, u8 *out)
+ in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buffer,
+ &len, nx_ctx->ap->sglen);
+
+- if (len != sctx->count)
+- return -EINVAL;
++ if (len != sctx->count) {
++ rc = -EINVAL;
++ goto out;
++ }
+
+ len = AES_BLOCK_SIZE;
+ out_sg = nx_build_sg_list(nx_ctx->out_sg, out, &len,
+ nx_ctx->ap->sglen);
+
+- if (len != AES_BLOCK_SIZE)
+- return -EINVAL;
++ if (len != AES_BLOCK_SIZE) {
++ rc = -EINVAL;
++ goto out;
++ }
+
+ nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
+ nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
+@@ -372,7 +390,7 @@ struct shash_alg nx_shash_aes_xcbc_alg = {
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ .cra_ctxsize = sizeof(struct nx_crypto_ctx),
+- .cra_init = nx_crypto_ctx_aes_xcbc_init,
++ .cra_init = nx_crypto_ctx_aes_xcbc_init2,
+ .cra_exit = nx_crypto_ctx_exit,
+ }
+ };
+diff --git a/drivers/crypto/nx/nx-sha256.c b/drivers/crypto/nx/nx-sha256.c
+index 23621da624c3..08f8d5cd6334 100644
+--- a/drivers/crypto/nx/nx-sha256.c
++++ b/drivers/crypto/nx/nx-sha256.c
+@@ -29,30 +29,28 @@
+ #include "nx.h"
+
+
+-static int nx_sha256_init(struct shash_desc *desc)
++static int nx_crypto_ctx_sha256_init(struct crypto_tfm *tfm)
+ {
+- struct sha256_state *sctx = shash_desc_ctx(desc);
+- struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+- int len;
+- int rc;
++ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
++ int err;
+
+- nx_ctx_init(nx_ctx, HCOP_FC_SHA);
++ err = nx_crypto_ctx_sha_init(tfm);
++ if (err)
++ return err;
+
+- memset(sctx, 0, sizeof *sctx);
++ nx_ctx_init(nx_ctx, HCOP_FC_SHA);
+
+ nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA256];
+
+ NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA256);
+
+- len = SHA256_DIGEST_SIZE;
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->out_sg,
+- &nx_ctx->op.outlen,
+- &len,
+- (u8 *) sctx->state,
+- NX_DS_SHA256);
++ return 0;
++}
+
+- if (rc)
+- goto out;
++static int nx_sha256_init(struct shash_desc *desc) {
++ struct sha256_state *sctx = shash_desc_ctx(desc);
++
++ memset(sctx, 0, sizeof *sctx);
+
+ sctx->state[0] = __cpu_to_be32(SHA256_H0);
+ sctx->state[1] = __cpu_to_be32(SHA256_H1);
+@@ -64,7 +62,6 @@ static int nx_sha256_init(struct shash_desc *desc)
+ sctx->state[7] = __cpu_to_be32(SHA256_H7);
+ sctx->count = 0;
+
+-out:
+ return 0;
+ }
+
+@@ -74,10 +71,13 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
+ struct sha256_state *sctx = shash_desc_ctx(desc);
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+ struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
++ struct nx_sg *in_sg;
++ struct nx_sg *out_sg;
+ u64 to_process = 0, leftover, total;
+ unsigned long irq_flags;
+ int rc = 0;
+ int data_len;
++ u32 max_sg_len;
+ u64 buf_len = (sctx->count % SHA256_BLOCK_SIZE);
+
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
+@@ -97,6 +97,22 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
+ NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
+ NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
+
++ in_sg = nx_ctx->in_sg;
++ max_sg_len = min_t(u64, nx_ctx->ap->sglen,
++ nx_driver.of.max_sg_len/sizeof(struct nx_sg));
++ max_sg_len = min_t(u64, max_sg_len,
++ nx_ctx->ap->databytelen/NX_PAGE_SIZE);
++
++ data_len = SHA256_DIGEST_SIZE;
++ out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
++ &data_len, max_sg_len);
++ nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
++
++ if (data_len != SHA256_DIGEST_SIZE) {
++ rc = -EINVAL;
++ goto out;
++ }
++
+ do {
+ /*
+ * to_process: the SHA256_BLOCK_SIZE data chunk to process in
+@@ -108,25 +124,22 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
+
+ if (buf_len) {
+ data_len = buf_len;
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->in_sg,
+- &nx_ctx->op.inlen,
+- &data_len,
+- (u8 *) sctx->buf,
+- NX_DS_SHA256);
++ in_sg = nx_build_sg_list(nx_ctx->in_sg,
++ (u8 *) sctx->buf,
++ &data_len,
++ max_sg_len);
+
+- if (rc || data_len != buf_len)
++ if (data_len != buf_len) {
++ rc = -EINVAL;
+ goto out;
++ }
+ }
+
+ data_len = to_process - buf_len;
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->in_sg,
+- &nx_ctx->op.inlen,
+- &data_len,
+- (u8 *) data,
+- NX_DS_SHA256);
++ in_sg = nx_build_sg_list(in_sg, (u8 *) data,
++ &data_len, max_sg_len);
+
+- if (rc)
+- goto out;
++ nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
+
+ to_process = (data_len + buf_len);
+ leftover = total - to_process;
+@@ -173,12 +186,19 @@ static int nx_sha256_final(struct shash_desc *desc, u8 *out)
+ struct sha256_state *sctx = shash_desc_ctx(desc);
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+ struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
++ struct nx_sg *in_sg, *out_sg;
+ unsigned long irq_flags;
+- int rc;
++ u32 max_sg_len;
++ int rc = 0;
+ int len;
+
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
+
++ max_sg_len = min_t(u64, nx_ctx->ap->sglen,
++ nx_driver.of.max_sg_len/sizeof(struct nx_sg));
++ max_sg_len = min_t(u64, max_sg_len,
++ nx_ctx->ap->databytelen/NX_PAGE_SIZE);
++
+ /* final is represented by continuing the operation and indicating that
+ * this is not an intermediate operation */
+ if (sctx->count >= SHA256_BLOCK_SIZE) {
+@@ -195,25 +215,24 @@ static int nx_sha256_final(struct shash_desc *desc, u8 *out)
+ csbcpb->cpb.sha256.message_bit_length = (u64) (sctx->count * 8);
+
+ len = sctx->count & (SHA256_BLOCK_SIZE - 1);
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->in_sg,
+- &nx_ctx->op.inlen,
+- &len,
+- (u8 *) sctx->buf,
+- NX_DS_SHA256);
++ in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *) sctx->buf,
++ &len, max_sg_len);
+
+- if (rc || len != (sctx->count & (SHA256_BLOCK_SIZE - 1)))
++ if (len != (sctx->count & (SHA256_BLOCK_SIZE - 1))) {
++ rc = -EINVAL;
+ goto out;
++ }
+
+ len = SHA256_DIGEST_SIZE;
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->out_sg,
+- &nx_ctx->op.outlen,
+- &len,
+- out,
+- NX_DS_SHA256);
++ out_sg = nx_build_sg_list(nx_ctx->out_sg, out, &len, max_sg_len);
+
+- if (rc || len != SHA256_DIGEST_SIZE)
++ if (len != SHA256_DIGEST_SIZE) {
++ rc = -EINVAL;
+ goto out;
++ }
+
++ nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
++ nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
+ if (!nx_ctx->op.outlen) {
+ rc = -EINVAL;
+ goto out;
+@@ -268,7 +287,7 @@ struct shash_alg nx_shash_sha256_alg = {
+ .cra_blocksize = SHA256_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ .cra_ctxsize = sizeof(struct nx_crypto_ctx),
+- .cra_init = nx_crypto_ctx_sha_init,
++ .cra_init = nx_crypto_ctx_sha256_init,
+ .cra_exit = nx_crypto_ctx_exit,
+ }
+ };
+diff --git a/drivers/crypto/nx/nx-sha512.c b/drivers/crypto/nx/nx-sha512.c
+index b3adf1022673..aff0fe58eac0 100644
+--- a/drivers/crypto/nx/nx-sha512.c
++++ b/drivers/crypto/nx/nx-sha512.c
+@@ -28,30 +28,29 @@
+ #include "nx.h"
+
+
+-static int nx_sha512_init(struct shash_desc *desc)
++static int nx_crypto_ctx_sha512_init(struct crypto_tfm *tfm)
+ {
+- struct sha512_state *sctx = shash_desc_ctx(desc);
+- struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+- int len;
+- int rc;
++ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
++ int err;
+
+- nx_ctx_init(nx_ctx, HCOP_FC_SHA);
++ err = nx_crypto_ctx_sha_init(tfm);
++ if (err)
++ return err;
+
+- memset(sctx, 0, sizeof *sctx);
++ nx_ctx_init(nx_ctx, HCOP_FC_SHA);
+
+ nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA512];
+
+ NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA512);
+
+- len = SHA512_DIGEST_SIZE;
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->out_sg,
+- &nx_ctx->op.outlen,
+- &len,
+- (u8 *)sctx->state,
+- NX_DS_SHA512);
++ return 0;
++}
+
+- if (rc || len != SHA512_DIGEST_SIZE)
+- goto out;
++static int nx_sha512_init(struct shash_desc *desc)
++{
++ struct sha512_state *sctx = shash_desc_ctx(desc);
++
++ memset(sctx, 0, sizeof *sctx);
+
+ sctx->state[0] = __cpu_to_be64(SHA512_H0);
+ sctx->state[1] = __cpu_to_be64(SHA512_H1);
+@@ -63,7 +62,6 @@ static int nx_sha512_init(struct shash_desc *desc)
+ sctx->state[7] = __cpu_to_be64(SHA512_H7);
+ sctx->count[0] = 0;
+
+-out:
+ return 0;
+ }
+
+@@ -73,10 +71,13 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+ struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
++ struct nx_sg *in_sg;
++ struct nx_sg *out_sg;
+ u64 to_process, leftover = 0, total;
+ unsigned long irq_flags;
+ int rc = 0;
+ int data_len;
++ u32 max_sg_len;
+ u64 buf_len = (sctx->count[0] % SHA512_BLOCK_SIZE);
+
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
+@@ -96,6 +97,22 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
+ NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
+ NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
+
++ in_sg = nx_ctx->in_sg;
++ max_sg_len = min_t(u64, nx_ctx->ap->sglen,
++ nx_driver.of.max_sg_len/sizeof(struct nx_sg));
++ max_sg_len = min_t(u64, max_sg_len,
++ nx_ctx->ap->databytelen/NX_PAGE_SIZE);
++
++ data_len = SHA512_DIGEST_SIZE;
++ out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
++ &data_len, max_sg_len);
++ nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
++
++ if (data_len != SHA512_DIGEST_SIZE) {
++ rc = -EINVAL;
++ goto out;
++ }
++
+ do {
+ /*
+ * to_process: the SHA512_BLOCK_SIZE data chunk to process in
+@@ -108,25 +125,26 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
+
+ if (buf_len) {
+ data_len = buf_len;
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->in_sg,
+- &nx_ctx->op.inlen,
+- &data_len,
+- (u8 *) sctx->buf,
+- NX_DS_SHA512);
++ in_sg = nx_build_sg_list(nx_ctx->in_sg,
++ (u8 *) sctx->buf,
++ &data_len, max_sg_len);
+
+- if (rc || data_len != buf_len)
++ if (data_len != buf_len) {
++ rc = -EINVAL;
+ goto out;
++ }
+ }
+
+ data_len = to_process - buf_len;
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->in_sg,
+- &nx_ctx->op.inlen,
+- &data_len,
+- (u8 *) data,
+- NX_DS_SHA512);
++ in_sg = nx_build_sg_list(in_sg, (u8 *) data,
++ &data_len, max_sg_len);
++
++ nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
+
+- if (rc || data_len != (to_process - buf_len))
++ if (data_len != (to_process - buf_len)) {
++ rc = -EINVAL;
+ goto out;
++ }
+
+ to_process = (data_len + buf_len);
+ leftover = total - to_process;
+@@ -172,13 +190,20 @@ static int nx_sha512_final(struct shash_desc *desc, u8 *out)
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
+ struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
++ struct nx_sg *in_sg, *out_sg;
++ u32 max_sg_len;
+ u64 count0;
+ unsigned long irq_flags;
+- int rc;
++ int rc = 0;
+ int len;
+
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
+
++ max_sg_len = min_t(u64, nx_ctx->ap->sglen,
++ nx_driver.of.max_sg_len/sizeof(struct nx_sg));
++ max_sg_len = min_t(u64, max_sg_len,
++ nx_ctx->ap->databytelen/NX_PAGE_SIZE);
++
+ /* final is represented by continuing the operation and indicating that
+ * this is not an intermediate operation */
+ if (sctx->count[0] >= SHA512_BLOCK_SIZE) {
+@@ -200,24 +225,20 @@ static int nx_sha512_final(struct shash_desc *desc, u8 *out)
+ csbcpb->cpb.sha512.message_bit_length_lo = count0;
+
+ len = sctx->count[0] & (SHA512_BLOCK_SIZE - 1);
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->in_sg,
+- &nx_ctx->op.inlen,
+- &len,
+- (u8 *)sctx->buf,
+- NX_DS_SHA512);
++ in_sg = nx_build_sg_list(nx_ctx->in_sg, sctx->buf, &len,
++ max_sg_len);
+
+- if (rc || len != (sctx->count[0] & (SHA512_BLOCK_SIZE - 1)))
++ if (len != (sctx->count[0] & (SHA512_BLOCK_SIZE - 1))) {
++ rc = -EINVAL;
+ goto out;
++ }
+
+ len = SHA512_DIGEST_SIZE;
+- rc = nx_sha_build_sg_list(nx_ctx, nx_ctx->out_sg,
+- &nx_ctx->op.outlen,
+- &len,
+- out,
+- NX_DS_SHA512);
++ out_sg = nx_build_sg_list(nx_ctx->out_sg, out, &len,
++ max_sg_len);
+
+- if (rc)
+- goto out;
++ nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
++ nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
+
+ if (!nx_ctx->op.outlen) {
+ rc = -EINVAL;
+@@ -273,7 +294,7 @@ struct shash_alg nx_shash_sha512_alg = {
+ .cra_blocksize = SHA512_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ .cra_ctxsize = sizeof(struct nx_crypto_ctx),
+- .cra_init = nx_crypto_ctx_sha_init,
++ .cra_init = nx_crypto_ctx_sha512_init,
+ .cra_exit = nx_crypto_ctx_exit,
+ }
+ };
+diff --git a/drivers/crypto/nx/nx.c b/drivers/crypto/nx/nx.c
+index 1da6dc59d0dd..737d33dc50b8 100644
+--- a/drivers/crypto/nx/nx.c
++++ b/drivers/crypto/nx/nx.c
+@@ -215,8 +215,15 @@ struct nx_sg *nx_walk_and_build(struct nx_sg *nx_dst,
+ * @delta: is the amount we need to crop in order to bound the list.
+ *
+ */
+-static long int trim_sg_list(struct nx_sg *sg, struct nx_sg *end, unsigned int delta)
++static long int trim_sg_list(struct nx_sg *sg,
++ struct nx_sg *end,
++ unsigned int delta,
++ unsigned int *nbytes)
+ {
++ long int oplen;
++ long int data_back;
++ unsigned int is_delta = delta;
++
+ while (delta && end > sg) {
+ struct nx_sg *last = end - 1;
+
+@@ -228,54 +235,20 @@ static long int trim_sg_list(struct nx_sg *sg, struct nx_sg *end, unsigned int d
+ delta -= last->len;
+ }
+ }
+- return (sg - end) * sizeof(struct nx_sg);
+-}
+-
+-/**
+- * nx_sha_build_sg_list - walk and build sg list to sha modes
+- * using right bounds and limits.
+- * @nx_ctx: NX crypto context for the lists we're building
+- * @nx_sg: current sg list in or out list
+- * @op_len: current op_len to be used in order to build a sg list
+- * @nbytes: number or bytes to be processed
+- * @offset: buf offset
+- * @mode: SHA256 or SHA512
+- */
+-int nx_sha_build_sg_list(struct nx_crypto_ctx *nx_ctx,
+- struct nx_sg *nx_in_outsg,
+- s64 *op_len,
+- unsigned int *nbytes,
+- u8 *offset,
+- u32 mode)
+-{
+- unsigned int delta = 0;
+- unsigned int total = *nbytes;
+- struct nx_sg *nx_insg = nx_in_outsg;
+- unsigned int max_sg_len;
+
+- max_sg_len = min_t(u64, nx_ctx->ap->sglen,
+- nx_driver.of.max_sg_len/sizeof(struct nx_sg));
+- max_sg_len = min_t(u64, max_sg_len,
+- nx_ctx->ap->databytelen/NX_PAGE_SIZE);
+-
+- *nbytes = min_t(u64, *nbytes, nx_ctx->ap->databytelen);
+- nx_insg = nx_build_sg_list(nx_insg, offset, nbytes, max_sg_len);
+-
+- switch (mode) {
+- case NX_DS_SHA256:
+- if (*nbytes < total)
+- delta = *nbytes - (*nbytes & ~(SHA256_BLOCK_SIZE - 1));
+- break;
+- case NX_DS_SHA512:
+- if (*nbytes < total)
+- delta = *nbytes - (*nbytes & ~(SHA512_BLOCK_SIZE - 1));
+- break;
+- default:
+- return -EINVAL;
++ /* There are cases where we need to crop list in order to make it
++ * a block size multiple, but we also need to align data. In order to
++ * that we need to calculate how much we need to put back to be
++ * processed
++ */
++ oplen = (sg - end) * sizeof(struct nx_sg);
++ if (is_delta) {
++ data_back = (abs(oplen) / AES_BLOCK_SIZE) * sg->len;
++ data_back = *nbytes - (data_back & ~(AES_BLOCK_SIZE - 1));
++ *nbytes -= data_back;
+ }
+- *op_len = trim_sg_list(nx_in_outsg, nx_insg, delta);
+
+- return 0;
++ return oplen;
+ }
+
+ /**
+@@ -330,8 +303,8 @@ int nx_build_sg_lists(struct nx_crypto_ctx *nx_ctx,
+ /* these lengths should be negative, which will indicate to phyp that
+ * the input and output parameters are scatterlists, not linear
+ * buffers */
+- nx_ctx->op.inlen = trim_sg_list(nx_ctx->in_sg, nx_insg, delta);
+- nx_ctx->op.outlen = trim_sg_list(nx_ctx->out_sg, nx_outsg, delta);
++ nx_ctx->op.inlen = trim_sg_list(nx_ctx->in_sg, nx_insg, delta, nbytes);
++ nx_ctx->op.outlen = trim_sg_list(nx_ctx->out_sg, nx_outsg, delta, nbytes);
+
+ return 0;
+ }
+@@ -662,12 +635,14 @@ static int nx_crypto_ctx_init(struct nx_crypto_ctx *nx_ctx, u32 fc, u32 mode)
+ /* entry points from the crypto tfm initializers */
+ int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm)
+ {
++ tfm->crt_aead.reqsize = sizeof(struct nx_ccm_rctx);
+ return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES,
+ NX_MODE_AES_CCM);
+ }
+
+ int nx_crypto_ctx_aes_gcm_init(struct crypto_tfm *tfm)
+ {
++ tfm->crt_aead.reqsize = sizeof(struct nx_gcm_rctx);
+ return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES,
+ NX_MODE_AES_GCM);
+ }
+diff --git a/drivers/crypto/nx/nx.h b/drivers/crypto/nx/nx.h
+index 6c9ecaaead52..c3ed83764fef 100644
+--- a/drivers/crypto/nx/nx.h
++++ b/drivers/crypto/nx/nx.h
+@@ -2,6 +2,8 @@
+ #ifndef __NX_H__
+ #define __NX_H__
+
++#include <crypto/ctr.h>
++
+ #define NX_NAME "nx-crypto"
+ #define NX_STRING "IBM Power7+ Nest Accelerator Crypto Driver"
+ #define NX_VERSION "1.0"
+@@ -91,8 +93,11 @@ struct nx_crypto_driver {
+
+ #define NX_GCM4106_NONCE_LEN (4)
+ #define NX_GCM_CTR_OFFSET (12)
+-struct nx_gcm_priv {
++struct nx_gcm_rctx {
+ u8 iv[16];
++};
++
++struct nx_gcm_priv {
+ u8 iauth_tag[16];
+ u8 nonce[NX_GCM4106_NONCE_LEN];
+ };
+@@ -100,8 +105,11 @@ struct nx_gcm_priv {
+ #define NX_CCM_AES_KEY_LEN (16)
+ #define NX_CCM4309_AES_KEY_LEN (19)
+ #define NX_CCM4309_NONCE_LEN (3)
+-struct nx_ccm_priv {
++struct nx_ccm_rctx {
+ u8 iv[16];
++};
++
++struct nx_ccm_priv {
+ u8 b0[16];
+ u8 iauth_tag[16];
+ u8 oauth_tag[16];
+@@ -113,7 +121,7 @@ struct nx_xcbc_priv {
+ };
+
+ struct nx_ctr_priv {
+- u8 iv[16];
++ u8 nonce[CTR_RFC3686_NONCE_SIZE];
+ };
+
+ struct nx_crypto_ctx {
+@@ -153,8 +161,6 @@ void nx_crypto_ctx_exit(struct crypto_tfm *tfm);
+ void nx_ctx_init(struct nx_crypto_ctx *nx_ctx, unsigned int function);
+ int nx_hcall_sync(struct nx_crypto_ctx *ctx, struct vio_pfo_op *op,
+ u32 may_sleep);
+-int nx_sha_build_sg_list(struct nx_crypto_ctx *, struct nx_sg *,
+- s64 *, unsigned int *, u8 *, u32);
+ struct nx_sg *nx_build_sg_list(struct nx_sg *, u8 *, unsigned int *, u32);
+ int nx_build_sg_lists(struct nx_crypto_ctx *, struct blkcipher_desc *,
+ struct scatterlist *, struct scatterlist *, unsigned int *,
+diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c
+index 1dc5b0a17cf7..34139a8894a0 100644
+--- a/drivers/crypto/qat/qat_common/qat_algs.c
++++ b/drivers/crypto/qat/qat_common/qat_algs.c
+@@ -73,7 +73,8 @@
+ ICP_QAT_HW_CIPHER_KEY_CONVERT, \
+ ICP_QAT_HW_CIPHER_DECRYPT)
+
+-static atomic_t active_dev;
++static DEFINE_MUTEX(algs_lock);
++static unsigned int active_devs;
+
+ struct qat_alg_buf {
+ uint32_t len;
+@@ -1271,7 +1272,10 @@ static struct crypto_alg qat_algs[] = { {
+
+ int qat_algs_register(void)
+ {
+- if (atomic_add_return(1, &active_dev) == 1) {
++ int ret = 0;
++
++ mutex_lock(&algs_lock);
++ if (++active_devs == 1) {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(qat_algs); i++)
+@@ -1280,21 +1284,25 @@ int qat_algs_register(void)
+ CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC :
+ CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC;
+
+- return crypto_register_algs(qat_algs, ARRAY_SIZE(qat_algs));
++ ret = crypto_register_algs(qat_algs, ARRAY_SIZE(qat_algs));
+ }
+- return 0;
++ mutex_unlock(&algs_lock);
++ return ret;
+ }
+
+ int qat_algs_unregister(void)
+ {
+- if (atomic_sub_return(1, &active_dev) == 0)
+- return crypto_unregister_algs(qat_algs, ARRAY_SIZE(qat_algs));
+- return 0;
++ int ret = 0;
++
++ mutex_lock(&algs_lock);
++ if (--active_devs == 0)
++ ret = crypto_unregister_algs(qat_algs, ARRAY_SIZE(qat_algs));
++ mutex_unlock(&algs_lock);
++ return ret;
+ }
+
+ int qat_algs_init(void)
+ {
+- atomic_set(&active_dev, 0);
+ crypto_get_default_rng();
+ return 0;
+ }
+diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
+index 7992164ea9ec..c89a7abb523f 100644
+--- a/drivers/dma/at_xdmac.c
++++ b/drivers/dma/at_xdmac.c
+@@ -648,16 +648,17 @@ at_xdmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
+ desc->lld.mbr_sa = mem;
+ desc->lld.mbr_da = atchan->sconfig.dst_addr;
+ }
+- desc->lld.mbr_cfg = atchan->cfg;
+- dwidth = at_xdmac_get_dwidth(desc->lld.mbr_cfg);
++ dwidth = at_xdmac_get_dwidth(atchan->cfg);
+ fixed_dwidth = IS_ALIGNED(len, 1 << dwidth)
+- ? at_xdmac_get_dwidth(desc->lld.mbr_cfg)
++ ? dwidth
+ : AT_XDMAC_CC_DWIDTH_BYTE;
+ desc->lld.mbr_ubc = AT_XDMAC_MBR_UBC_NDV2 /* next descriptor view */
+ | AT_XDMAC_MBR_UBC_NDEN /* next descriptor dst parameter update */
+ | AT_XDMAC_MBR_UBC_NSEN /* next descriptor src parameter update */
+ | (i == sg_len - 1 ? 0 : AT_XDMAC_MBR_UBC_NDE) /* descriptor fetch */
+ | (len >> fixed_dwidth); /* microblock length */
++ desc->lld.mbr_cfg = (atchan->cfg & ~AT_XDMAC_CC_DWIDTH_MASK) |
++ AT_XDMAC_CC_DWIDTH(fixed_dwidth);
+ dev_dbg(chan2dev(chan),
+ "%s: lld: mbr_sa=%pad, mbr_da=%pad, mbr_ubc=0x%08x\n",
+ __func__, &desc->lld.mbr_sa, &desc->lld.mbr_da, desc->lld.mbr_ubc);
+diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
+index 340f9e607cd8..3dabc52b9615 100644
+--- a/drivers/dma/pl330.c
++++ b/drivers/dma/pl330.c
+@@ -2328,7 +2328,7 @@ static dma_cookie_t pl330_tx_submit(struct dma_async_tx_descriptor *tx)
+ desc->txd.callback = last->txd.callback;
+ desc->txd.callback_param = last->txd.callback_param;
+ }
+- last->last = false;
++ desc->last = false;
+
+ dma_cookie_assign(&desc->txd);
+
+@@ -2621,6 +2621,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
+ desc->rqcfg.brst_len = 1;
+
+ desc->rqcfg.brst_len = get_burst_len(desc, len);
++ desc->bytes_requested = len;
+
+ desc->txd.flags = flags;
+
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 778bbb6425b8..b0487c9f018c 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -1294,7 +1294,6 @@ retry:
+ goto retry;
+ }
+ DRM_DEBUG_KMS("failed to dpcd write %d %d\n", tosend, ret);
+- WARN(1, "fail\n");
+
+ return -EIO;
+ }
+diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
+index 8ae6f7f06b3a..683a9b004c11 100644
+--- a/drivers/gpu/drm/i915/i915_drv.h
++++ b/drivers/gpu/drm/i915/i915_drv.h
+@@ -3190,15 +3190,14 @@ int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
+ #define I915_READ64(reg) dev_priv->uncore.funcs.mmio_readq(dev_priv, (reg), true)
+
+ #define I915_READ64_2x32(lower_reg, upper_reg) ({ \
+- u32 upper = I915_READ(upper_reg); \
+- u32 lower = I915_READ(lower_reg); \
+- u32 tmp = I915_READ(upper_reg); \
+- if (upper != tmp) { \
+- upper = tmp; \
+- lower = I915_READ(lower_reg); \
+- WARN_ON(I915_READ(upper_reg) != upper); \
+- } \
+- (u64)upper << 32 | lower; })
++ u32 upper, lower, tmp; \
++ tmp = I915_READ(upper_reg); \
++ do { \
++ upper = tmp; \
++ lower = I915_READ(lower_reg); \
++ tmp = I915_READ(upper_reg); \
++ } while (upper != tmp); \
++ (u64)upper << 32 | lower; })
+
+ #define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
+ #define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg)
+diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
+index 6377b22269ad..7ee23d1d1e74 100644
+--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
++++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
+@@ -464,7 +464,10 @@ i915_gem_get_tiling(struct drm_device *dev, void *data,
+ }
+
+ /* Hide bit 17 from the user -- see comment in i915_gem_set_tiling */
+- args->phys_swizzle_mode = args->swizzle_mode;
++ if (dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES)
++ args->phys_swizzle_mode = I915_BIT_6_SWIZZLE_UNKNOWN;
++ else
++ args->phys_swizzle_mode = args->swizzle_mode;
+ if (args->swizzle_mode == I915_BIT_6_SWIZZLE_9_17)
+ args->swizzle_mode = I915_BIT_6_SWIZZLE_9;
+ if (args->swizzle_mode == I915_BIT_6_SWIZZLE_9_10_17)
+diff --git a/drivers/gpu/drm/radeon/dce6_afmt.c b/drivers/gpu/drm/radeon/dce6_afmt.c
+index 68fd9fc677e3..44480c1b9738 100644
+--- a/drivers/gpu/drm/radeon/dce6_afmt.c
++++ b/drivers/gpu/drm/radeon/dce6_afmt.c
+@@ -93,30 +93,26 @@ void dce6_afmt_select_pin(struct drm_encoder *encoder)
+ struct radeon_device *rdev = encoder->dev->dev_private;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+- u32 offset;
+
+- if (!dig || !dig->afmt || !dig->afmt->pin)
++ if (!dig || !dig->afmt || !dig->pin)
+ return;
+
+- offset = dig->afmt->offset;
+-
+- WREG32(AFMT_AUDIO_SRC_CONTROL + offset,
+- AFMT_AUDIO_SRC_SELECT(dig->afmt->pin->id));
++ WREG32(AFMT_AUDIO_SRC_CONTROL + dig->afmt->offset,
++ AFMT_AUDIO_SRC_SELECT(dig->pin->id));
+ }
+
+ void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
+- struct drm_connector *connector, struct drm_display_mode *mode)
++ struct drm_connector *connector,
++ struct drm_display_mode *mode)
+ {
+ struct radeon_device *rdev = encoder->dev->dev_private;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+- u32 tmp = 0, offset;
++ u32 tmp = 0;
+
+- if (!dig || !dig->afmt || !dig->afmt->pin)
++ if (!dig || !dig->afmt || !dig->pin)
+ return;
+
+- offset = dig->afmt->pin->offset;
+-
+ if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
+ if (connector->latency_present[1])
+ tmp = VIDEO_LIPSYNC(connector->video_latency[1]) |
+@@ -130,24 +126,24 @@ void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
+ else
+ tmp = VIDEO_LIPSYNC(0) | AUDIO_LIPSYNC(0);
+ }
+- WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC, tmp);
++ WREG32_ENDPOINT(dig->pin->offset,
++ AZ_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC, tmp);
+ }
+
+ void dce6_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
+- u8 *sadb, int sad_count)
++ u8 *sadb, int sad_count)
+ {
+ struct radeon_device *rdev = encoder->dev->dev_private;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+- u32 offset, tmp;
++ u32 tmp;
+
+- if (!dig || !dig->afmt || !dig->afmt->pin)
++ if (!dig || !dig->afmt || !dig->pin)
+ return;
+
+- offset = dig->afmt->pin->offset;
+-
+ /* program the speaker allocation */
+- tmp = RREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
++ tmp = RREG32_ENDPOINT(dig->pin->offset,
++ AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
+ tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
+ /* set HDMI mode */
+ tmp |= HDMI_CONNECTION;
+@@ -155,24 +151,24 @@ void dce6_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
+ tmp |= SPEAKER_ALLOCATION(sadb[0]);
+ else
+ tmp |= SPEAKER_ALLOCATION(5); /* stereo */
+- WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);
++ WREG32_ENDPOINT(dig->pin->offset,
++ AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);
+ }
+
+ void dce6_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
+- u8 *sadb, int sad_count)
++ u8 *sadb, int sad_count)
+ {
+ struct radeon_device *rdev = encoder->dev->dev_private;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+- u32 offset, tmp;
++ u32 tmp;
+
+- if (!dig || !dig->afmt || !dig->afmt->pin)
++ if (!dig || !dig->afmt || !dig->pin)
+ return;
+
+- offset = dig->afmt->pin->offset;
+-
+ /* program the speaker allocation */
+- tmp = RREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
++ tmp = RREG32_ENDPOINT(dig->pin->offset,
++ AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
+ tmp &= ~(HDMI_CONNECTION | SPEAKER_ALLOCATION_MASK);
+ /* set DP mode */
+ tmp |= DP_CONNECTION;
+@@ -180,13 +176,13 @@ void dce6_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
+ tmp |= SPEAKER_ALLOCATION(sadb[0]);
+ else
+ tmp |= SPEAKER_ALLOCATION(5); /* stereo */
+- WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);
++ WREG32_ENDPOINT(dig->pin->offset,
++ AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);
+ }
+
+ void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,
+- struct cea_sad *sads, int sad_count)
++ struct cea_sad *sads, int sad_count)
+ {
+- u32 offset;
+ int i;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+@@ -206,11 +202,9 @@ void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,
+ { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
+ };
+
+- if (!dig || !dig->afmt || !dig->afmt->pin)
++ if (!dig || !dig->afmt || !dig->pin)
+ return;
+
+- offset = dig->afmt->pin->offset;
+-
+ for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
+ u32 value = 0;
+ u8 stereo_freqs = 0;
+@@ -237,7 +231,7 @@ void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,
+
+ value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);
+
+- WREG32_ENDPOINT(offset, eld_reg_to_type[i][0], value);
++ WREG32_ENDPOINT(dig->pin->offset, eld_reg_to_type[i][0], value);
+ }
+ }
+
+@@ -253,7 +247,7 @@ void dce6_audio_enable(struct radeon_device *rdev,
+ }
+
+ void dce6_hdmi_audio_set_dto(struct radeon_device *rdev,
+- struct radeon_crtc *crtc, unsigned int clock)
++ struct radeon_crtc *crtc, unsigned int clock)
+ {
+ /* Two dtos; generally use dto0 for HDMI */
+ u32 value = 0;
+@@ -272,7 +266,7 @@ void dce6_hdmi_audio_set_dto(struct radeon_device *rdev,
+ }
+
+ void dce6_dp_audio_set_dto(struct radeon_device *rdev,
+- struct radeon_crtc *crtc, unsigned int clock)
++ struct radeon_crtc *crtc, unsigned int clock)
+ {
+ /* Two dtos; generally use dto1 for DP */
+ u32 value = 0;
+diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c
+index fa719c53449b..59b3d3221294 100644
+--- a/drivers/gpu/drm/radeon/radeon_audio.c
++++ b/drivers/gpu/drm/radeon/radeon_audio.c
+@@ -245,6 +245,28 @@ static struct radeon_audio_funcs dce6_dp_funcs = {
+ static void radeon_audio_enable(struct radeon_device *rdev,
+ struct r600_audio_pin *pin, u8 enable_mask)
+ {
++ struct drm_encoder *encoder;
++ struct radeon_encoder *radeon_encoder;
++ struct radeon_encoder_atom_dig *dig;
++ int pin_count = 0;
++
++ if (!pin)
++ return;
++
++ if (rdev->mode_info.mode_config_initialized) {
++ list_for_each_entry(encoder, &rdev->ddev->mode_config.encoder_list, head) {
++ if (radeon_encoder_is_digital(encoder)) {
++ radeon_encoder = to_radeon_encoder(encoder);
++ dig = radeon_encoder->enc_priv;
++ if (dig->pin == pin)
++ pin_count++;
++ }
++ }
++
++ if ((pin_count > 1) && (enable_mask == 0))
++ return;
++ }
++
+ if (rdev->audio.funcs->enable)
+ rdev->audio.funcs->enable(rdev, pin, enable_mask);
+ }
+@@ -336,24 +358,13 @@ void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,
+
+ static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
+ {
+- struct radeon_encoder *radeon_encoder;
+- struct drm_connector *connector;
+- struct radeon_connector *radeon_connector = NULL;
++ struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
++ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct cea_sad *sads;
+ int sad_count;
+
+- list_for_each_entry(connector,
+- &encoder->dev->mode_config.connector_list, head) {
+- if (connector->encoder == encoder) {
+- radeon_connector = to_radeon_connector(connector);
+- break;
+- }
+- }
+-
+- if (!radeon_connector) {
+- DRM_ERROR("Couldn't find encoder's connector\n");
++ if (!connector)
+ return;
+- }
+
+ sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
+ if (sad_count <= 0) {
+@@ -362,8 +373,6 @@ static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
+ }
+ BUG_ON(!sads);
+
+- radeon_encoder = to_radeon_encoder(encoder);
+-
+ if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)
+ radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);
+
+@@ -372,27 +381,16 @@ static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
+
+ static void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)
+ {
++ struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+- struct drm_connector *connector;
+- struct radeon_connector *radeon_connector = NULL;
+ u8 *sadb = NULL;
+ int sad_count;
+
+- list_for_each_entry(connector,
+- &encoder->dev->mode_config.connector_list, head) {
+- if (connector->encoder == encoder) {
+- radeon_connector = to_radeon_connector(connector);
+- break;
+- }
+- }
+-
+- if (!radeon_connector) {
+- DRM_ERROR("Couldn't find encoder's connector\n");
++ if (!connector)
+ return;
+- }
+
+- sad_count = drm_edid_to_speaker_allocation(
+- radeon_connector_edid(connector), &sadb);
++ sad_count = drm_edid_to_speaker_allocation(radeon_connector_edid(connector),
++ &sadb);
+ if (sad_count < 0) {
+ DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n",
+ sad_count);
+@@ -406,26 +404,13 @@ static void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)
+ }
+
+ static void radeon_audio_write_latency_fields(struct drm_encoder *encoder,
+- struct drm_display_mode *mode)
++ struct drm_display_mode *mode)
+ {
+- struct radeon_encoder *radeon_encoder;
+- struct drm_connector *connector;
+- struct radeon_connector *radeon_connector = 0;
+-
+- list_for_each_entry(connector,
+- &encoder->dev->mode_config.connector_list, head) {
+- if (connector->encoder == encoder) {
+- radeon_connector = to_radeon_connector(connector);
+- break;
+- }
+- }
++ struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
++ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+
+- if (!radeon_connector) {
+- DRM_ERROR("Couldn't find encoder's connector\n");
++ if (!connector)
+ return;
+- }
+-
+- radeon_encoder = to_radeon_encoder(encoder);
+
+ if (radeon_encoder->audio && radeon_encoder->audio->write_latency_fields)
+ radeon_encoder->audio->write_latency_fields(encoder, connector, mode);
+@@ -451,29 +436,23 @@ static void radeon_audio_select_pin(struct drm_encoder *encoder)
+ }
+
+ void radeon_audio_detect(struct drm_connector *connector,
++ struct drm_encoder *encoder,
+ enum drm_connector_status status)
+ {
+- struct radeon_device *rdev;
+- struct radeon_encoder *radeon_encoder;
++ struct drm_device *dev = connector->dev;
++ struct radeon_device *rdev = dev->dev_private;
++ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig;
+
+- if (!connector || !connector->encoder)
++ if (!radeon_audio_chipset_supported(rdev))
+ return;
+
+- rdev = connector->encoder->dev->dev_private;
+-
+- if (!radeon_audio_chipset_supported(rdev))
++ if (!radeon_encoder_is_digital(encoder))
+ return;
+
+- radeon_encoder = to_radeon_encoder(connector->encoder);
+ dig = radeon_encoder->enc_priv;
+
+ if (status == connector_status_connected) {
+- if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) {
+- radeon_encoder->audio = NULL;
+- return;
+- }
+-
+ if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+ struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+
+@@ -486,11 +465,17 @@ void radeon_audio_detect(struct drm_connector *connector,
+ radeon_encoder->audio = rdev->audio.hdmi_funcs;
+ }
+
+- dig->afmt->pin = radeon_audio_get_pin(connector->encoder);
+- radeon_audio_enable(rdev, dig->afmt->pin, 0xf);
++ if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
++ if (!dig->pin)
++ dig->pin = radeon_audio_get_pin(encoder);
++ radeon_audio_enable(rdev, dig->pin, 0xf);
++ } else {
++ radeon_audio_enable(rdev, dig->pin, 0);
++ dig->pin = NULL;
++ }
+ } else {
+- radeon_audio_enable(rdev, dig->afmt->pin, 0);
+- dig->afmt->pin = NULL;
++ radeon_audio_enable(rdev, dig->pin, 0);
++ dig->pin = NULL;
+ }
+ }
+
+@@ -518,29 +503,18 @@ static void radeon_audio_set_dto(struct drm_encoder *encoder, unsigned int clock
+ }
+
+ static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,
+- struct drm_display_mode *mode)
++ struct drm_display_mode *mode)
+ {
+ struct radeon_device *rdev = encoder->dev->dev_private;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+- struct drm_connector *connector;
+- struct radeon_connector *radeon_connector = NULL;
++ struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
+ u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
+ struct hdmi_avi_infoframe frame;
+ int err;
+
+- list_for_each_entry(connector,
+- &encoder->dev->mode_config.connector_list, head) {
+- if (connector->encoder == encoder) {
+- radeon_connector = to_radeon_connector(connector);
+- break;
+- }
+- }
+-
+- if (!radeon_connector) {
+- DRM_ERROR("Couldn't find encoder's connector\n");
+- return -ENOENT;
+- }
++ if (!connector)
++ return -EINVAL;
+
+ err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+ if (err < 0) {
+@@ -563,8 +537,8 @@ static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,
+ return err;
+ }
+
+- if (dig && dig->afmt &&
+- radeon_encoder->audio && radeon_encoder->audio->set_avi_packet)
++ if (dig && dig->afmt && radeon_encoder->audio &&
++ radeon_encoder->audio->set_avi_packet)
+ radeon_encoder->audio->set_avi_packet(rdev, dig->afmt->offset,
+ buffer, sizeof(buffer));
+
+@@ -745,7 +719,7 @@ static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
+ }
+
+ static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
+- struct drm_display_mode *mode)
++ struct drm_display_mode *mode)
+ {
+ struct drm_device *dev = encoder->dev;
+ struct radeon_device *rdev = dev->dev_private;
+@@ -756,6 +730,9 @@ static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
+ struct radeon_connector_atom_dig *dig_connector =
+ radeon_connector->con_priv;
+
++ if (!connector)
++ return;
++
+ if (!dig || !dig->afmt)
+ return;
+
+@@ -774,7 +751,7 @@ static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
+ }
+
+ void radeon_audio_mode_set(struct drm_encoder *encoder,
+- struct drm_display_mode *mode)
++ struct drm_display_mode *mode)
+ {
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+
+diff --git a/drivers/gpu/drm/radeon/radeon_audio.h b/drivers/gpu/drm/radeon/radeon_audio.h
+index 8438304f7139..059cc3012062 100644
+--- a/drivers/gpu/drm/radeon/radeon_audio.h
++++ b/drivers/gpu/drm/radeon/radeon_audio.h
+@@ -68,7 +68,8 @@ struct radeon_audio_funcs
+
+ int radeon_audio_init(struct radeon_device *rdev);
+ void radeon_audio_detect(struct drm_connector *connector,
+- enum drm_connector_status status);
++ struct drm_encoder *encoder,
++ enum drm_connector_status status);
+ u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev,
+ u32 offset, u32 reg);
+ void radeon_audio_endpoint_wreg(struct radeon_device *rdev,
+diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
+index 3e5f6b71f3ad..c097d3a82bda 100644
+--- a/drivers/gpu/drm/radeon/radeon_combios.c
++++ b/drivers/gpu/drm/radeon/radeon_combios.c
+@@ -1255,10 +1255,15 @@ struct radeon_encoder_lvds *radeon_combios_get_lvds_info(struct radeon_encoder
+
+ if ((RBIOS16(tmp) == lvds->native_mode.hdisplay) &&
+ (RBIOS16(tmp + 2) == lvds->native_mode.vdisplay)) {
++ u32 hss = (RBIOS16(tmp + 21) - RBIOS16(tmp + 19) - 1) * 8;
++
++ if (hss > lvds->native_mode.hdisplay)
++ hss = (10 - 1) * 8;
++
+ lvds->native_mode.htotal = lvds->native_mode.hdisplay +
+ (RBIOS16(tmp + 17) - RBIOS16(tmp + 19)) * 8;
+ lvds->native_mode.hsync_start = lvds->native_mode.hdisplay +
+- (RBIOS16(tmp + 21) - RBIOS16(tmp + 19) - 1) * 8;
++ hss;
+ lvds->native_mode.hsync_end = lvds->native_mode.hsync_start +
+ (RBIOS8(tmp + 23) * 8);
+
+diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
+index cebb65e07e1d..94b21ae70ef7 100644
+--- a/drivers/gpu/drm/radeon/radeon_connectors.c
++++ b/drivers/gpu/drm/radeon/radeon_connectors.c
+@@ -1379,8 +1379,16 @@ out:
+ /* updated in get modes as well since we need to know if it's analog or digital */
+ radeon_connector_update_scratch_regs(connector, ret);
+
+- if (radeon_audio != 0)
+- radeon_audio_detect(connector, ret);
++ if ((radeon_audio != 0) && radeon_connector->use_digital) {
++ const struct drm_connector_helper_funcs *connector_funcs =
++ connector->helper_private;
++
++ encoder = connector_funcs->best_encoder(connector);
++ if (encoder && (encoder->encoder_type == DRM_MODE_ENCODER_TMDS)) {
++ radeon_connector_get_edid(connector);
++ radeon_audio_detect(connector, encoder, ret);
++ }
++ }
+
+ exit:
+ pm_runtime_mark_last_busy(connector->dev->dev);
+@@ -1717,8 +1725,10 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
+
+ radeon_connector_update_scratch_regs(connector, ret);
+
+- if (radeon_audio != 0)
+- radeon_audio_detect(connector, ret);
++ if ((radeon_audio != 0) && encoder) {
++ radeon_connector_get_edid(connector);
++ radeon_audio_detect(connector, encoder, ret);
++ }
+
+ out:
+ pm_runtime_mark_last_busy(connector->dev->dev);
+diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
+index f01c797b78cf..9af2d8398e90 100644
+--- a/drivers/gpu/drm/radeon/radeon_mode.h
++++ b/drivers/gpu/drm/radeon/radeon_mode.h
+@@ -237,7 +237,6 @@ struct radeon_afmt {
+ int offset;
+ bool last_buffer_filled_status;
+ int id;
+- struct r600_audio_pin *pin;
+ };
+
+ struct radeon_mode_info {
+@@ -439,6 +438,7 @@ struct radeon_encoder_atom_dig {
+ uint8_t backlight_level;
+ int panel_mode;
+ struct radeon_afmt *afmt;
++ struct r600_audio_pin *pin;
+ int active_mst_links;
+ };
+
+diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
+index 6153df735e82..08ff89d222e5 100644
+--- a/drivers/hwmon/nct7904.c
++++ b/drivers/hwmon/nct7904.c
+@@ -575,6 +575,7 @@ static const struct i2c_device_id nct7904_id[] = {
+ {"nct7904", 0},
+ {}
+ };
++MODULE_DEVICE_TABLE(i2c, nct7904_id);
+
+ static struct i2c_driver nct7904_driver = {
+ .class = I2C_CLASS_HWMON,
+diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
+index a353b7de6d22..bc7eed67998a 100644
+--- a/drivers/input/mouse/alps.c
++++ b/drivers/input/mouse/alps.c
+@@ -20,6 +20,7 @@
+ #include <linux/input/mt.h>
+ #include <linux/serio.h>
+ #include <linux/libps2.h>
++#include <linux/dmi.h>
+
+ #include "psmouse.h"
+ #include "alps.h"
+@@ -99,6 +100,7 @@ static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
+ #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
+ #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
+ 6-byte ALPS packet */
++#define ALPS_DELL 0x100 /* device is a Dell laptop */
+ #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
+
+ static const struct alps_model_info alps_model_data[] = {
+@@ -251,9 +253,9 @@ static void alps_process_packet_v1_v2(struct psmouse *psmouse)
+ return;
+ }
+
+- /* Non interleaved V2 dualpoint has separate stick button bits */
++ /* Dell non interleaved V2 dualpoint has separate stick button bits */
+ if (priv->proto_version == ALPS_PROTO_V2 &&
+- priv->flags == (ALPS_PASS | ALPS_DUALPOINT)) {
++ priv->flags == (ALPS_DELL | ALPS_PASS | ALPS_DUALPOINT)) {
+ left |= packet[0] & 1;
+ right |= packet[0] & 2;
+ middle |= packet[0] & 4;
+@@ -2542,6 +2544,8 @@ static int alps_set_protocol(struct psmouse *psmouse,
+ priv->byte0 = protocol->byte0;
+ priv->mask0 = protocol->mask0;
+ priv->flags = protocol->flags;
++ if (dmi_name_in_vendors("Dell"))
++ priv->flags |= ALPS_DELL;
+
+ priv->x_max = 2000;
+ priv->y_max = 1400;
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index e8d84566f311..697f34fba06b 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -1719,7 +1719,8 @@ static int dm_merge_bvec(struct request_queue *q,
+ struct mapped_device *md = q->queuedata;
+ struct dm_table *map = dm_get_live_table_fast(md);
+ struct dm_target *ti;
+- sector_t max_sectors, max_size = 0;
++ sector_t max_sectors;
++ int max_size = 0;
+
+ if (unlikely(!map))
+ goto out;
+@@ -1732,18 +1733,10 @@ static int dm_merge_bvec(struct request_queue *q,
+ * Find maximum amount of I/O that won't need splitting
+ */
+ max_sectors = min(max_io_len(bvm->bi_sector, ti),
+- (sector_t) queue_max_sectors(q));
++ (sector_t) BIO_MAX_SECTORS);
+ max_size = (max_sectors << SECTOR_SHIFT) - bvm->bi_size;
+-
+- /*
+- * FIXME: this stop-gap fix _must_ be cleaned up (by passing a sector_t
+- * to the targets' merge function since it holds sectors not bytes).
+- * Just doing this as an interim fix for stable@ because the more
+- * comprehensive cleanup of switching to sector_t will impact every
+- * DM target that implements a ->merge hook.
+- */
+- if (max_size > INT_MAX)
+- max_size = INT_MAX;
++ if (max_size < 0)
++ max_size = 0;
+
+ /*
+ * merge_bvec_fn() returns number of bytes
+@@ -1751,13 +1744,13 @@ static int dm_merge_bvec(struct request_queue *q,
+ * max is precomputed maximal io size
+ */
+ if (max_size && ti->type->merge)
+- max_size = ti->type->merge(ti, bvm, biovec, (int) max_size);
++ max_size = ti->type->merge(ti, bvm, biovec, max_size);
+ /*
+ * If the target doesn't support merge method and some of the devices
+- * provided their merge_bvec method (we know this by looking for the
+- * max_hw_sectors that dm_set_device_limits may set), then we can't
+- * allow bios with multiple vector entries. So always set max_size
+- * to 0, and the code below allows just one page.
++ * provided their merge_bvec method (we know this by looking at
++ * queue_max_hw_sectors), then we can't allow bios with multiple vector
++ * entries. So always set max_size to 0, and the code below allows
++ * just one page.
+ */
+ else if (queue_max_hw_sectors(q) <= PAGE_SIZE >> 9)
+ max_size = 0;
+diff --git a/drivers/md/md.c b/drivers/md/md.c
+index b9200282fd77..e4621511d118 100644
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -5740,7 +5740,7 @@ static int get_bitmap_file(struct mddev *mddev, void __user * arg)
+ char *ptr;
+ int err;
+
+- file = kmalloc(sizeof(*file), GFP_NOIO);
++ file = kzalloc(sizeof(*file), GFP_NOIO);
+ if (!file)
+ return -ENOMEM;
+
+diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
+index cd7b0c1e882d..5ce3cd5c4e1d 100644
+--- a/drivers/md/raid1.c
++++ b/drivers/md/raid1.c
+@@ -1475,6 +1475,7 @@ static void error(struct mddev *mddev, struct md_rdev *rdev)
+ {
+ char b[BDEVNAME_SIZE];
+ struct r1conf *conf = mddev->private;
++ unsigned long flags;
+
+ /*
+ * If it is not operational, then we have already marked it as dead
+@@ -1494,14 +1495,13 @@ static void error(struct mddev *mddev, struct md_rdev *rdev)
+ return;
+ }
+ set_bit(Blocked, &rdev->flags);
++ spin_lock_irqsave(&conf->device_lock, flags);
+ if (test_and_clear_bit(In_sync, &rdev->flags)) {
+- unsigned long flags;
+- spin_lock_irqsave(&conf->device_lock, flags);
+ mddev->degraded++;
+ set_bit(Faulty, &rdev->flags);
+- spin_unlock_irqrestore(&conf->device_lock, flags);
+ } else
+ set_bit(Faulty, &rdev->flags);
++ spin_unlock_irqrestore(&conf->device_lock, flags);
+ /*
+ * if recovery is running, make sure it aborts.
+ */
+@@ -1567,7 +1567,10 @@ static int raid1_spare_active(struct mddev *mddev)
+ * Find all failed disks within the RAID1 configuration
+ * and mark them readable.
+ * Called under mddev lock, so rcu protection not needed.
++ * device_lock used to avoid races with raid1_end_read_request
++ * which expects 'In_sync' flags and ->degraded to be consistent.
+ */
++ spin_lock_irqsave(&conf->device_lock, flags);
+ for (i = 0; i < conf->raid_disks; i++) {
+ struct md_rdev *rdev = conf->mirrors[i].rdev;
+ struct md_rdev *repl = conf->mirrors[conf->raid_disks + i].rdev;
+@@ -1598,7 +1601,6 @@ static int raid1_spare_active(struct mddev *mddev)
+ sysfs_notify_dirent_safe(rdev->sysfs_state);
+ }
+ }
+- spin_lock_irqsave(&conf->device_lock, flags);
+ mddev->degraded -= count;
+ spin_unlock_irqrestore(&conf->device_lock, flags);
+
+diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
+index 7681237fe298..ead543282128 100644
+--- a/drivers/net/wireless/ath/ath10k/pci.c
++++ b/drivers/net/wireless/ath/ath10k/pci.c
+@@ -1524,12 +1524,11 @@ static int ath10k_pci_get_num_banks(struct ath10k *ar)
+ switch (MS(ar->chip_id, SOC_CHIP_ID_REV)) {
+ case QCA6174_HW_1_0_CHIP_ID_REV:
+ case QCA6174_HW_1_1_CHIP_ID_REV:
++ case QCA6174_HW_2_1_CHIP_ID_REV:
++ case QCA6174_HW_2_2_CHIP_ID_REV:
+ return 3;
+ case QCA6174_HW_1_3_CHIP_ID_REV:
+ return 2;
+- case QCA6174_HW_2_1_CHIP_ID_REV:
+- case QCA6174_HW_2_2_CHIP_ID_REV:
+- return 6;
+ case QCA6174_HW_3_0_CHIP_ID_REV:
+ case QCA6174_HW_3_1_CHIP_ID_REV:
+ case QCA6174_HW_3_2_CHIP_ID_REV:
+diff --git a/drivers/phy/phy-twl4030-usb.c b/drivers/phy/phy-twl4030-usb.c
+index 8882afbef688..6285f46f3ddb 100644
+--- a/drivers/phy/phy-twl4030-usb.c
++++ b/drivers/phy/phy-twl4030-usb.c
+@@ -144,6 +144,16 @@
+ #define PMBR1 0x0D
+ #define GPIO_USB_4PIN_ULPI_2430C (3 << 0)
+
++/*
++ * If VBUS is valid or ID is ground, then we know a
++ * cable is present and we need to be runtime-enabled
++ */
++static inline bool cable_present(enum omap_musb_vbus_id_status stat)
++{
++ return stat == OMAP_MUSB_VBUS_VALID ||
++ stat == OMAP_MUSB_ID_GROUND;
++}
++
+ struct twl4030_usb {
+ struct usb_phy phy;
+ struct device *dev;
+@@ -536,8 +546,10 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl)
+
+ mutex_lock(&twl->lock);
+ if (status >= 0 && status != twl->linkstat) {
++ status_changed =
++ cable_present(twl->linkstat) !=
++ cable_present(status);
+ twl->linkstat = status;
+- status_changed = true;
+ }
+ mutex_unlock(&twl->lock);
+
+@@ -553,15 +565,11 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl)
+ * USB_LINK_VBUS state. musb_hdrc won't care until it
+ * starts to handle softconnect right.
+ */
+- if ((status == OMAP_MUSB_VBUS_VALID) ||
+- (status == OMAP_MUSB_ID_GROUND)) {
+- if (pm_runtime_suspended(twl->dev))
+- pm_runtime_get_sync(twl->dev);
++ if (cable_present(status)) {
++ pm_runtime_get_sync(twl->dev);
+ } else {
+- if (pm_runtime_active(twl->dev)) {
+- pm_runtime_mark_last_busy(twl->dev);
+- pm_runtime_put_autosuspend(twl->dev);
+- }
++ pm_runtime_mark_last_busy(twl->dev);
++ pm_runtime_put_autosuspend(twl->dev);
+ }
+ omap_musb_mailbox(status);
+ }
+@@ -766,6 +774,9 @@ static int twl4030_usb_remove(struct platform_device *pdev)
+
+ /* disable complete OTG block */
+ twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
++
++ if (cable_present(twl->linkstat))
++ pm_runtime_put_noidle(twl->dev);
+ pm_runtime_mark_last_busy(twl->dev);
+ pm_runtime_put(twl->dev);
+
+diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
+index 882744852aac..a9aa38903efe 100644
+--- a/drivers/scsi/ipr.c
++++ b/drivers/scsi/ipr.c
+@@ -599,9 +599,10 @@ static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
+ {
+ struct ipr_trace_entry *trace_entry;
+ struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
++ unsigned int trace_index;
+
+- trace_entry = &ioa_cfg->trace[atomic_add_return
+- (1, &ioa_cfg->trace_index)%IPR_NUM_TRACE_ENTRIES];
++ trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
++ trace_entry = &ioa_cfg->trace[trace_index];
+ trace_entry->time = jiffies;
+ trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
+ trace_entry->type = type;
+@@ -1051,10 +1052,15 @@ static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
+
+ static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
+ {
++ unsigned int hrrq;
++
+ if (ioa_cfg->hrrq_num == 1)
+- return 0;
+- else
+- return (atomic_add_return(1, &ioa_cfg->hrrq_index) % (ioa_cfg->hrrq_num - 1)) + 1;
++ hrrq = 0;
++ else {
++ hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
++ hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
++ }
++ return hrrq;
+ }
+
+ /**
+@@ -6263,21 +6269,23 @@ static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
+ struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+ struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
+ u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
+- unsigned long hrrq_flags;
++ unsigned long lock_flags;
+
+ scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
+
+ if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
+ scsi_dma_unmap(scsi_cmd);
+
+- spin_lock_irqsave(ipr_cmd->hrrq->lock, hrrq_flags);
++ spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
+ list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ scsi_cmd->scsi_done(scsi_cmd);
+- spin_unlock_irqrestore(ipr_cmd->hrrq->lock, hrrq_flags);
++ spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
+ } else {
+- spin_lock_irqsave(ipr_cmd->hrrq->lock, hrrq_flags);
++ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
++ spin_lock(&ipr_cmd->hrrq->_lock);
+ ipr_erp_start(ioa_cfg, ipr_cmd);
+- spin_unlock_irqrestore(ipr_cmd->hrrq->lock, hrrq_flags);
++ spin_unlock(&ipr_cmd->hrrq->_lock);
++ spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+ }
+ }
+
+diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
+index 73790a1d0969..6b97ee45c7b4 100644
+--- a/drivers/scsi/ipr.h
++++ b/drivers/scsi/ipr.h
+@@ -1486,6 +1486,7 @@ struct ipr_ioa_cfg {
+
+ #define IPR_NUM_TRACE_INDEX_BITS 8
+ #define IPR_NUM_TRACE_ENTRIES (1 << IPR_NUM_TRACE_INDEX_BITS)
++#define IPR_TRACE_INDEX_MASK (IPR_NUM_TRACE_ENTRIES - 1)
+ #define IPR_TRACE_SIZE (sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES)
+ char trace_start[8];
+ #define IPR_TRACE_START_LABEL "trace"
+diff --git a/drivers/staging/lustre/lustre/obdclass/debug.c b/drivers/staging/lustre/lustre/obdclass/debug.c
+index 9c934e6d2ea1..c61add46b426 100644
+--- a/drivers/staging/lustre/lustre/obdclass/debug.c
++++ b/drivers/staging/lustre/lustre/obdclass/debug.c
+@@ -40,7 +40,7 @@
+
+ #define DEBUG_SUBSYSTEM D_OTHER
+
+-#include <linux/unaligned/access_ok.h>
++#include <asm/unaligned.h>
+
+ #include "../include/obd_support.h"
+ #include "../include/lustre_debug.h"
+diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
+index 15baacb126ad..376e4a0c15c6 100644
+--- a/drivers/staging/vt6655/device_main.c
++++ b/drivers/staging/vt6655/device_main.c
+@@ -1486,8 +1486,9 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
+ }
+ }
+
+- if (changed & BSS_CHANGED_ASSOC && priv->op_mode != NL80211_IFTYPE_AP) {
+- if (conf->assoc) {
++ if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
++ priv->op_mode != NL80211_IFTYPE_AP) {
++ if (conf->assoc && conf->beacon_rate) {
+ CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
+ conf->sync_tsf);
+
+diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
+index 1d30b0975651..67098a8a7a02 100644
+--- a/drivers/thermal/samsung/exynos_tmu.c
++++ b/drivers/thermal/samsung/exynos_tmu.c
+@@ -1209,6 +1209,8 @@ err_clk_sec:
+ if (!IS_ERR(data->clk_sec))
+ clk_unprepare(data->clk_sec);
+ err_sensor:
++ if (!IS_ERR_OR_NULL(data->regulator))
++ regulator_disable(data->regulator);
+ thermal_zone_of_sensor_unregister(&pdev->dev, data->tzd);
+
+ return ret;
+diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
+index 74fea4fa41b1..3ad48e1c0c57 100644
+--- a/drivers/usb/chipidea/core.c
++++ b/drivers/usb/chipidea/core.c
+@@ -1024,7 +1024,18 @@ static struct platform_driver ci_hdrc_driver = {
+ },
+ };
+
+-module_platform_driver(ci_hdrc_driver);
++static int __init ci_hdrc_platform_register(void)
++{
++ ci_hdrc_host_driver_init();
++ return platform_driver_register(&ci_hdrc_driver);
++}
++module_init(ci_hdrc_platform_register);
++
++static void __exit ci_hdrc_platform_unregister(void)
++{
++ platform_driver_unregister(&ci_hdrc_driver);
++}
++module_exit(ci_hdrc_platform_unregister);
+
+ MODULE_ALIAS("platform:ci_hdrc");
+ MODULE_LICENSE("GPL v2");
+diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
+index 21fe1a314313..2f8af40e87ca 100644
+--- a/drivers/usb/chipidea/host.c
++++ b/drivers/usb/chipidea/host.c
+@@ -237,9 +237,12 @@ int ci_hdrc_host_init(struct ci_hdrc *ci)
+ rdrv->name = "host";
+ ci->roles[CI_ROLE_HOST] = rdrv;
+
++ return 0;
++}
++
++void ci_hdrc_host_driver_init(void)
++{
+ ehci_init_driver(&ci_ehci_hc_driver, &ehci_ci_overrides);
+ orig_bus_suspend = ci_ehci_hc_driver.bus_suspend;
+ ci_ehci_hc_driver.bus_suspend = ci_ehci_bus_suspend;
+-
+- return 0;
+ }
+diff --git a/drivers/usb/chipidea/host.h b/drivers/usb/chipidea/host.h
+index 5707bf379bfb..0f12f131bdd3 100644
+--- a/drivers/usb/chipidea/host.h
++++ b/drivers/usb/chipidea/host.h
+@@ -5,6 +5,7 @@
+
+ int ci_hdrc_host_init(struct ci_hdrc *ci);
+ void ci_hdrc_host_destroy(struct ci_hdrc *ci);
++void ci_hdrc_host_driver_init(void);
+
+ #else
+
+@@ -18,6 +19,11 @@ static inline void ci_hdrc_host_destroy(struct ci_hdrc *ci)
+
+ }
+
++static void ci_hdrc_host_driver_init(void)
++{
++
++}
++
+ #endif
+
+ #endif /* __DRIVERS_USB_CHIPIDEA_HOST_H */
+diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
+index 6d3eb8b00a48..531861547253 100644
+--- a/drivers/usb/gadget/function/f_uac2.c
++++ b/drivers/usb/gadget/function/f_uac2.c
+@@ -1162,14 +1162,14 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt)
+ factor = 1000;
+ } else {
+ ep_desc = &hs_epin_desc;
+- factor = 125;
++ factor = 8000;
+ }
+
+ /* pre-compute some values for iso_complete() */
+ uac2->p_framesize = opts->p_ssize *
+ num_channels(opts->p_chmask);
+ rate = opts->p_srate * uac2->p_framesize;
+- uac2->p_interval = (1 << (ep_desc->bInterval - 1)) * factor;
++ uac2->p_interval = factor / (1 << (ep_desc->bInterval - 1));
+ uac2->p_pktsize = min_t(unsigned int, rate / uac2->p_interval,
+ prm->max_psize);
+
+diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
+index d69c35558f68..7d69931cf45d 100644
+--- a/drivers/usb/gadget/udc/udc-core.c
++++ b/drivers/usb/gadget/udc/udc-core.c
+@@ -321,6 +321,7 @@ err4:
+
+ err3:
+ put_device(&udc->dev);
++ device_del(&gadget->dev);
+
+ err2:
+ put_device(&gadget->dev);
+diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
+index 3e442f77a2b9..9a8c936cd42c 100644
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -1792,7 +1792,8 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
+ int size;
+ int i, j, num_ports;
+
+- del_timer_sync(&xhci->cmd_timer);
++ if (timer_pending(&xhci->cmd_timer))
++ del_timer_sync(&xhci->cmd_timer);
+
+ /* Free the Event Ring Segment Table and the actual Event Ring */
+ size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries);
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index d095677a0702..b3a0a2275f5a 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -82,7 +82,7 @@ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg,
+ return 0;
+ /* offset in TRBs */
+ segment_offset = trb - seg->trbs;
+- if (segment_offset > TRBS_PER_SEGMENT)
++ if (segment_offset >= TRBS_PER_SEGMENT)
+ return 0;
+ return seg->dma + (segment_offset * sizeof(*trb));
+ }
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 19b85ee98a72..876423b8892c 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -1099,6 +1099,8 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */
+ { USB_DEVICE_INTERFACE_CLASS(SIERRA_VENDOR_ID, 0x68c0, 0xff),
+ .driver_info = (kernel_ulong_t)&sierra_mc73xx_blacklist }, /* MC73xx */
++ { USB_DEVICE_INTERFACE_CLASS(SIERRA_VENDOR_ID, 0x9041, 0xff),
++ .driver_info = (kernel_ulong_t)&sierra_mc73xx_blacklist }, /* MC7305/MC7355 */
+ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6001) },
+ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_300) },
+ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6003),
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index 9c63897b3a56..d156545728c2 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -145,7 +145,6 @@ static const struct usb_device_id id_table[] = {
+ {DEVICE_SWI(0x1199, 0x901c)}, /* Sierra Wireless EM7700 */
+ {DEVICE_SWI(0x1199, 0x901f)}, /* Sierra Wireless EM7355 */
+ {DEVICE_SWI(0x1199, 0x9040)}, /* Sierra Wireless Modem */
+- {DEVICE_SWI(0x1199, 0x9041)}, /* Sierra Wireless MC7305/MC7355 */
+ {DEVICE_SWI(0x1199, 0x9051)}, /* Netgear AirCard 340U */
+ {DEVICE_SWI(0x1199, 0x9053)}, /* Sierra Wireless Modem */
+ {DEVICE_SWI(0x1199, 0x9054)}, /* Sierra Wireless Modem */
+@@ -158,6 +157,7 @@ static const struct usb_device_id id_table[] = {
+ {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81a8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
+ {DEVICE_SWI(0x413c, 0x81a9)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
++ {DEVICE_SWI(0x413c, 0x81b1)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
+
+ /* Huawei devices */
+ {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
+diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
+index 46179a0828eb..07d1ecd564f7 100644
+--- a/drivers/usb/serial/sierra.c
++++ b/drivers/usb/serial/sierra.c
+@@ -289,6 +289,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF),
+ .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
+ },
++ { USB_DEVICE(0x1199, 0x68AB) }, /* Sierra Wireless AR8550 */
+ /* AT&T Direct IP LTE modems */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
+ .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
+diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
+index 89274850741b..4bd23bba816f 100644
+--- a/drivers/xen/gntdev.c
++++ b/drivers/xen/gntdev.c
+@@ -568,12 +568,14 @@ static int gntdev_release(struct inode *inode, struct file *flip)
+
+ pr_debug("priv %p\n", priv);
+
++ mutex_lock(&priv->lock);
+ while (!list_empty(&priv->maps)) {
+ map = list_entry(priv->maps.next, struct grant_map, next);
+ list_del(&map->next);
+ gntdev_put_map(NULL /* already removed */, map);
+ }
+ WARN_ON(!list_empty(&priv->freeable_maps));
++ mutex_unlock(&priv->lock);
+
+ if (use_ptemod)
+ mmu_notifier_unregister(&priv->mn, priv->mm);
+diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
+index 039f9c8a95e8..6e13504f736e 100644
+--- a/fs/nfsd/nfs4state.c
++++ b/fs/nfsd/nfs4state.c
+@@ -4397,9 +4397,9 @@ laundromat_main(struct work_struct *laundry)
+ queue_delayed_work(laundry_wq, &nn->laundromat_work, t*HZ);
+ }
+
+-static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp)
++static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stid *stp)
+ {
+- if (!fh_match(&fhp->fh_handle, &stp->st_stid.sc_file->fi_fhandle))
++ if (!fh_match(&fhp->fh_handle, &stp->sc_file->fi_fhandle))
+ return nfserr_bad_stateid;
+ return nfs_ok;
+ }
+@@ -4574,20 +4574,48 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
+ return nfs_ok;
+ }
+
++static struct file *
++nfs4_find_file(struct nfs4_stid *s, int flags)
++{
++ switch (s->sc_type) {
++ case NFS4_DELEG_STID:
++ if (WARN_ON_ONCE(!s->sc_file->fi_deleg_file))
++ return NULL;
++ return get_file(s->sc_file->fi_deleg_file);
++ case NFS4_OPEN_STID:
++ case NFS4_LOCK_STID:
++ if (flags & RD_STATE)
++ return find_readable_file(s->sc_file);
++ else
++ return find_writeable_file(s->sc_file);
++ break;
++ }
++
++ return NULL;
++}
++
++static __be32
++nfs4_check_olstateid(struct svc_fh *fhp, struct nfs4_ol_stateid *ols, int flags)
++{
++ __be32 status;
++
++ status = nfsd4_check_openowner_confirmed(ols);
++ if (status)
++ return status;
++ return nfs4_check_openmode(ols, flags);
++}
++
+ /*
+-* Checks for stateid operations
+-*/
++ * Checks for stateid operations
++ */
+ __be32
+ nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate,
+ stateid_t *stateid, int flags, struct file **filpp)
+ {
+- struct nfs4_stid *s;
+- struct nfs4_ol_stateid *stp = NULL;
+- struct nfs4_delegation *dp = NULL;
+- struct svc_fh *current_fh = &cstate->current_fh;
+- struct inode *ino = d_inode(current_fh->fh_dentry);
++ struct svc_fh *fhp = &cstate->current_fh;
++ struct inode *ino = d_inode(fhp->fh_dentry);
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+- struct file *file = NULL;
++ struct nfs4_stid *s;
+ __be32 status;
+
+ if (filpp)
+@@ -4597,60 +4625,39 @@ nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate,
+ return nfserr_grace;
+
+ if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
+- return check_special_stateids(net, current_fh, stateid, flags);
++ return check_special_stateids(net, fhp, stateid, flags);
+
+ status = nfsd4_lookup_stateid(cstate, stateid,
+ NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
+ &s, nn);
+ if (status)
+ return status;
+- status = check_stateid_generation(stateid, &s->sc_stateid, nfsd4_has_session(cstate));
++ status = check_stateid_generation(stateid, &s->sc_stateid,
++ nfsd4_has_session(cstate));
+ if (status)
+ goto out;
++
+ switch (s->sc_type) {
+ case NFS4_DELEG_STID:
+- dp = delegstateid(s);
+- status = nfs4_check_delegmode(dp, flags);
+- if (status)
+- goto out;
+- if (filpp) {
+- file = dp->dl_stid.sc_file->fi_deleg_file;
+- if (!file) {
+- WARN_ON_ONCE(1);
+- status = nfserr_serverfault;
+- goto out;
+- }
+- get_file(file);
+- }
++ status = nfs4_check_delegmode(delegstateid(s), flags);
+ break;
+ case NFS4_OPEN_STID:
+ case NFS4_LOCK_STID:
+- stp = openlockstateid(s);
+- status = nfs4_check_fh(current_fh, stp);
+- if (status)
+- goto out;
+- status = nfsd4_check_openowner_confirmed(stp);
+- if (status)
+- goto out;
+- status = nfs4_check_openmode(stp, flags);
+- if (status)
+- goto out;
+- if (filpp) {
+- struct nfs4_file *fp = stp->st_stid.sc_file;
+-
+- if (flags & RD_STATE)
+- file = find_readable_file(fp);
+- else
+- file = find_writeable_file(fp);
+- }
++ status = nfs4_check_olstateid(fhp, openlockstateid(s), flags);
+ break;
+ default:
+ status = nfserr_bad_stateid;
++ break;
++ }
++ if (status)
+ goto out;
++ status = nfs4_check_fh(fhp, s);
++
++ if (!status && filpp) {
++ *filpp = nfs4_find_file(s, flags);
++ if (!*filpp)
++ status = nfserr_serverfault;
+ }
+- status = nfs_ok;
+- if (file)
+- *filpp = file;
+ out:
+ nfs4_put_stid(s);
+ return status;
+@@ -4754,7 +4761,7 @@ static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_
+ status = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, nfsd4_has_session(cstate));
+ if (status)
+ return status;
+- return nfs4_check_fh(current_fh, stp);
++ return nfs4_check_fh(current_fh, &stp->st_stid);
+ }
+
+ /*
+diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
+index 158badf945df..d4d84451e0e6 100644
+--- a/fs/nfsd/nfs4xdr.c
++++ b/fs/nfsd/nfs4xdr.c
+@@ -2142,6 +2142,7 @@ nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp,
+ #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
+ FATTR4_WORD0_RDATTR_ERROR)
+ #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID
++#define WORD2_ABSENT_FS_ATTRS 0
+
+ #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
+ static inline __be32
+@@ -2170,7 +2171,7 @@ nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp,
+ { return 0; }
+ #endif
+
+-static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err)
++static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *bmval2, u32 *rdattr_err)
+ {
+ /* As per referral draft: */
+ if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS ||
+@@ -2183,6 +2184,7 @@ static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err)
+ }
+ *bmval0 &= WORD0_ABSENT_FS_ATTRS;
+ *bmval1 &= WORD1_ABSENT_FS_ATTRS;
++ *bmval2 &= WORD2_ABSENT_FS_ATTRS;
+ return 0;
+ }
+
+@@ -2246,8 +2248,7 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp,
+ BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion));
+
+ if (exp->ex_fslocs.migrated) {
+- BUG_ON(bmval[2]);
+- status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err);
++ status = fattr_handle_absent_fs(&bmval0, &bmval1, &bmval2, &rdattr_err);
+ if (status)
+ goto out;
+ }
+@@ -2290,8 +2291,8 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp,
+ }
+
+ #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
+- if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) ||
+- bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) {
++ if ((bmval2 & FATTR4_WORD2_SECURITY_LABEL) ||
++ bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
+ err = security_inode_getsecctx(d_inode(dentry),
+ &context, &contextlen);
+ contextsupport = (err == 0);
+diff --git a/fs/notify/mark.c b/fs/notify/mark.c
+index 92e48c70f0f0..39ddcaf0918f 100644
+--- a/fs/notify/mark.c
++++ b/fs/notify/mark.c
+@@ -412,16 +412,36 @@ void fsnotify_clear_marks_by_group_flags(struct fsnotify_group *group,
+ unsigned int flags)
+ {
+ struct fsnotify_mark *lmark, *mark;
++ LIST_HEAD(to_free);
+
++ /*
++ * We have to be really careful here. Anytime we drop mark_mutex, e.g.
++ * fsnotify_clear_marks_by_inode() can come and free marks. Even in our
++ * to_free list so we have to use mark_mutex even when accessing that
++ * list. And freeing mark requires us to drop mark_mutex. So we can
++ * reliably free only the first mark in the list. That's why we first
++ * move marks to free to to_free list in one go and then free marks in
++ * to_free list one by one.
++ */
+ mutex_lock_nested(&group->mark_mutex, SINGLE_DEPTH_NESTING);
+ list_for_each_entry_safe(mark, lmark, &group->marks_list, g_list) {
+- if (mark->flags & flags) {
+- fsnotify_get_mark(mark);
+- fsnotify_destroy_mark_locked(mark, group);
+- fsnotify_put_mark(mark);
+- }
++ if (mark->flags & flags)
++ list_move(&mark->g_list, &to_free);
+ }
+ mutex_unlock(&group->mark_mutex);
++
++ while (1) {
++ mutex_lock_nested(&group->mark_mutex, SINGLE_DEPTH_NESTING);
++ if (list_empty(&to_free)) {
++ mutex_unlock(&group->mark_mutex);
++ break;
++ }
++ mark = list_first_entry(&to_free, struct fsnotify_mark, g_list);
++ fsnotify_get_mark(mark);
++ fsnotify_destroy_mark_locked(mark, group);
++ mutex_unlock(&group->mark_mutex);
++ fsnotify_put_mark(mark);
++ }
+ }
+
+ /*
+diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
+index f906a250da6a..9ea70127074d 100644
+--- a/fs/ocfs2/aops.c
++++ b/fs/ocfs2/aops.c
+@@ -686,7 +686,7 @@ static int ocfs2_direct_IO_zero_extend(struct ocfs2_super *osb,
+
+ if (p_cpos && !(ext_flags & OCFS2_EXT_UNWRITTEN)) {
+ u64 s = i_size_read(inode);
+- sector_t sector = (p_cpos << (osb->s_clustersize_bits - 9)) +
++ sector_t sector = ((u64)p_cpos << (osb->s_clustersize_bits - 9)) +
+ (do_div(s, osb->s_clustersize) >> 9);
+
+ ret = blkdev_issue_zeroout(osb->sb->s_bdev, sector,
+@@ -911,7 +911,7 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
+ BUG_ON(!p_cpos || (ext_flags & OCFS2_EXT_UNWRITTEN));
+
+ ret = blkdev_issue_zeroout(osb->sb->s_bdev,
+- p_cpos << (osb->s_clustersize_bits - 9),
++ (u64)p_cpos << (osb->s_clustersize_bits - 9),
+ zero_len_head >> 9, GFP_NOFS, false);
+ if (ret < 0)
+ mlog_errno(ret);
+diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
+index 8b23aa2f52dd..23157e40dd74 100644
+--- a/fs/ocfs2/dlmglue.c
++++ b/fs/ocfs2/dlmglue.c
+@@ -4025,9 +4025,13 @@ static void ocfs2_downconvert_thread_do_work(struct ocfs2_super *osb)
+ osb->dc_work_sequence = osb->dc_wake_sequence;
+
+ processed = osb->blocked_lock_count;
+- while (processed) {
+- BUG_ON(list_empty(&osb->blocked_lock_list));
+-
++ /*
++ * blocked lock processing in this loop might call iput which can
++ * remove items off osb->blocked_lock_list. Downconvert up to
++ * 'processed' number of locks, but stop short if we had some
++ * removed in ocfs2_mark_lockres_freeing when downconverting.
++ */
++ while (processed && !list_empty(&osb->blocked_lock_list)) {
+ lockres = list_entry(osb->blocked_lock_list.next,
+ struct ocfs2_lock_res, l_blocked_list);
+ list_del_init(&lockres->l_blocked_list);
+diff --git a/fs/signalfd.c b/fs/signalfd.c
+index 7e412ad74836..270221fcef42 100644
+--- a/fs/signalfd.c
++++ b/fs/signalfd.c
+@@ -121,8 +121,9 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo,
+ * Other callers might not initialize the si_lsb field,
+ * so check explicitly for the right codes here.
+ */
+- if (kinfo->si_code == BUS_MCEERR_AR ||
+- kinfo->si_code == BUS_MCEERR_AO)
++ if (kinfo->si_signo == SIGBUS &&
++ (kinfo->si_code == BUS_MCEERR_AR ||
++ kinfo->si_code == BUS_MCEERR_AO))
+ err |= __put_user((short) kinfo->si_addr_lsb,
+ &uinfo->ssi_addr_lsb);
+ #endif
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 3d4ea7eb2b68..12b75f3ba0a0 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -176,17 +176,17 @@ typedef enum {
+ /* Chip may not exist, so silence any errors in scan */
+ #define NAND_SCAN_SILENT_NODEV 0x00040000
+ /*
+- * This option could be defined by controller drivers to protect against
+- * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
+- */
+-#define NAND_USE_BOUNCE_BUFFER 0x00080000
+-/*
+ * Autodetect nand buswidth with readid/onfi.
+ * This suppose the driver will configure the hardware in 8 bits mode
+ * when calling nand_scan_ident, and update its configuration
+ * before calling nand_scan_tail.
+ */
+ #define NAND_BUSWIDTH_AUTO 0x00080000
++/*
++ * This option could be defined by controller drivers to protect against
++ * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
++ */
++#define NAND_USE_BOUNCE_BUFFER 0x00100000
+
+ /* Options set by nand scan */
+ /* Nand scan has allocated controller struct */
+diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
+index efe3443572ba..413417f3707b 100644
+--- a/include/uapi/linux/pci_regs.h
++++ b/include/uapi/linux/pci_regs.h
+@@ -319,6 +319,7 @@
+ #define PCI_MSIX_PBA 8 /* Pending Bit Array offset */
+ #define PCI_MSIX_PBA_BIR 0x00000007 /* BAR index */
+ #define PCI_MSIX_PBA_OFFSET 0xfffffff8 /* Offset into specified BAR */
++#define PCI_MSIX_FLAGS_BIRMASK PCI_MSIX_PBA_BIR /* deprecated */
+ #define PCI_CAP_MSIX_SIZEOF 12 /* size of MSIX registers */
+
+ /* MSI-X Table entry format */
+diff --git a/ipc/mqueue.c b/ipc/mqueue.c
+index 3aaea7ffd077..c3fc5c2b63f3 100644
+--- a/ipc/mqueue.c
++++ b/ipc/mqueue.c
+@@ -143,7 +143,6 @@ static int msg_insert(struct msg_msg *msg, struct mqueue_inode_info *info)
+ if (!leaf)
+ return -ENOMEM;
+ INIT_LIST_HEAD(&leaf->msg_list);
+- info->qsize += sizeof(*leaf);
+ }
+ leaf->priority = msg->m_type;
+ rb_link_node(&leaf->rb_node, parent, p);
+@@ -188,7 +187,6 @@ try_again:
+ "lazy leaf delete!\n");
+ rb_erase(&leaf->rb_node, &info->msg_tree);
+ if (info->node_cache) {
+- info->qsize -= sizeof(*leaf);
+ kfree(leaf);
+ } else {
+ info->node_cache = leaf;
+@@ -201,7 +199,6 @@ try_again:
+ if (list_empty(&leaf->msg_list)) {
+ rb_erase(&leaf->rb_node, &info->msg_tree);
+ if (info->node_cache) {
+- info->qsize -= sizeof(*leaf);
+ kfree(leaf);
+ } else {
+ info->node_cache = leaf;
+@@ -1026,7 +1023,6 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
+ /* Save our speculative allocation into the cache */
+ INIT_LIST_HEAD(&new_leaf->msg_list);
+ info->node_cache = new_leaf;
+- info->qsize += sizeof(*new_leaf);
+ new_leaf = NULL;
+ } else {
+ kfree(new_leaf);
+@@ -1133,7 +1129,6 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
+ /* Save our speculative allocation into the cache */
+ INIT_LIST_HEAD(&new_leaf->msg_list);
+ info->node_cache = new_leaf;
+- info->qsize += sizeof(*new_leaf);
+ } else {
+ kfree(new_leaf);
+ }
+diff --git a/kernel/signal.c b/kernel/signal.c
+index d51c5ddd855c..0206be728dac 100644
+--- a/kernel/signal.c
++++ b/kernel/signal.c
+@@ -2753,12 +2753,15 @@ int copy_siginfo_to_user(siginfo_t __user *to, const siginfo_t *from)
+ * Other callers might not initialize the si_lsb field,
+ * so check explicitly for the right codes here.
+ */
+- if (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)
++ if (from->si_signo == SIGBUS &&
++ (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO))
+ err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
+ #endif
+ #ifdef SEGV_BNDERR
+- err |= __put_user(from->si_lower, &to->si_lower);
+- err |= __put_user(from->si_upper, &to->si_upper);
++ if (from->si_signo == SIGSEGV && from->si_code == SEGV_BNDERR) {
++ err |= __put_user(from->si_lower, &to->si_lower);
++ err |= __put_user(from->si_upper, &to->si_upper);
++ }
+ #endif
+ break;
+ case __SI_CHLD:
+@@ -3022,7 +3025,7 @@ COMPAT_SYSCALL_DEFINE3(rt_sigqueueinfo,
+ int, sig,
+ struct compat_siginfo __user *, uinfo)
+ {
+- siginfo_t info;
++ siginfo_t info = {};
+ int ret = copy_siginfo_from_user32(&info, uinfo);
+ if (unlikely(ret))
+ return ret;
+@@ -3066,7 +3069,7 @@ COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo,
+ int, sig,
+ struct compat_siginfo __user *, uinfo)
+ {
+- siginfo_t info;
++ siginfo_t info = {};
+
+ if (copy_siginfo_from_user32(&info, uinfo))
+ return -EFAULT;
+diff --git a/mm/vmscan.c b/mm/vmscan.c
+index 5e8eadd71bac..0d024fc8aa8e 100644
+--- a/mm/vmscan.c
++++ b/mm/vmscan.c
+@@ -937,21 +937,17 @@ static unsigned long shrink_page_list(struct list_head *page_list,
+ *
+ * 2) Global reclaim encounters a page, memcg encounters a
+ * page that is not marked for immediate reclaim or
+- * the caller does not have __GFP_IO. In this case mark
++ * the caller does not have __GFP_FS (or __GFP_IO if it's
++ * simply going to swap, not to fs). In this case mark
+ * the page for immediate reclaim and continue scanning.
+ *
+- * __GFP_IO is checked because a loop driver thread might
++ * Require may_enter_fs because we would wait on fs, which
++ * may not have submitted IO yet. And the loop driver might
+ * enter reclaim, and deadlock if it waits on a page for
+ * which it is needed to do the write (loop masks off
+ * __GFP_IO|__GFP_FS for this reason); but more thought
+ * would probably show more reasons.
+ *
+- * Don't require __GFP_FS, since we're not going into the
+- * FS, just waiting on its writeback completion. Worryingly,
+- * ext4 gfs2 and xfs allocate pages with
+- * grab_cache_page_write_begin(,,AOP_FLAG_NOFS), so testing
+- * may_enter_fs here is liable to OOM on them.
+- *
+ * 3) memcg encounters a page that is not already marked
+ * PageReclaim. memcg does not have any dirty pages
+ * throttling so we could easily OOM just because too many
+@@ -968,7 +964,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
+
+ /* Case 2 above */
+ } else if (global_reclaim(sc) ||
+- !PageReclaim(page) || !(sc->gfp_mask & __GFP_IO)) {
++ !PageReclaim(page) || !may_enter_fs) {
+ /*
+ * This is slightly racy - end_page_writeback()
+ * might have just cleared PageReclaim, then
+diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
+index 1ab3dc9c8f99..7b815bcc8c9b 100644
+--- a/net/bluetooth/smp.c
++++ b/net/bluetooth/smp.c
+@@ -2295,6 +2295,10 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
+ return 1;
+
+ chan = conn->smp;
++ if (!chan) {
++ BT_ERR("SMP security requested but not available");
++ return 1;
++ }
+
+ if (!hci_dev_test_flag(hcon->hdev, HCI_LE_ENABLED))
+ return 1;
+diff --git a/sound/firewire/amdtp.c b/sound/firewire/amdtp.c
+index e061355f535f..bf20593d3085 100644
+--- a/sound/firewire/amdtp.c
++++ b/sound/firewire/amdtp.c
+@@ -730,8 +730,9 @@ static void handle_in_packet(struct amdtp_stream *s,
+ s->data_block_counter != UINT_MAX)
+ data_block_counter = s->data_block_counter;
+
+- if (((s->flags & CIP_SKIP_DBC_ZERO_CHECK) && data_block_counter == 0) ||
+- (s->data_block_counter == UINT_MAX)) {
++ if (((s->flags & CIP_SKIP_DBC_ZERO_CHECK) &&
++ data_block_counter == s->tx_first_dbc) ||
++ s->data_block_counter == UINT_MAX) {
+ lost = false;
+ } else if (!(s->flags & CIP_DBC_IS_END_EVENT)) {
+ lost = data_block_counter != s->data_block_counter;
+diff --git a/sound/firewire/amdtp.h b/sound/firewire/amdtp.h
+index 8a03a91e728b..25c905537658 100644
+--- a/sound/firewire/amdtp.h
++++ b/sound/firewire/amdtp.h
+@@ -153,6 +153,8 @@ struct amdtp_stream {
+
+ /* quirk: fixed interval of dbc between previos/current packets. */
+ unsigned int tx_dbc_interval;
++ /* quirk: indicate the value of dbc field in a first packet. */
++ unsigned int tx_first_dbc;
+
+ bool callbacked;
+ wait_queue_head_t callback_wait;
+diff --git a/sound/firewire/fireworks/fireworks.c b/sound/firewire/fireworks/fireworks.c
+index 2682e7e3e5c9..c94a432f7cc6 100644
+--- a/sound/firewire/fireworks/fireworks.c
++++ b/sound/firewire/fireworks/fireworks.c
+@@ -248,8 +248,16 @@ efw_probe(struct fw_unit *unit,
+ err = get_hardware_info(efw);
+ if (err < 0)
+ goto error;
++ /* AudioFire8 (since 2009) and AudioFirePre8 */
+ if (entry->model_id == MODEL_ECHO_AUDIOFIRE_9)
+ efw->is_af9 = true;
++ /* These models uses the same firmware. */
++ if (entry->model_id == MODEL_ECHO_AUDIOFIRE_2 ||
++ entry->model_id == MODEL_ECHO_AUDIOFIRE_4 ||
++ entry->model_id == MODEL_ECHO_AUDIOFIRE_9 ||
++ entry->model_id == MODEL_GIBSON_RIP ||
++ entry->model_id == MODEL_GIBSON_GOLDTOP)
++ efw->is_fireworks3 = true;
+
+ snd_efw_proc_init(efw);
+
+diff --git a/sound/firewire/fireworks/fireworks.h b/sound/firewire/fireworks/fireworks.h
+index 4f0201a95222..084d414b228c 100644
+--- a/sound/firewire/fireworks/fireworks.h
++++ b/sound/firewire/fireworks/fireworks.h
+@@ -71,6 +71,7 @@ struct snd_efw {
+
+ /* for quirks */
+ bool is_af9;
++ bool is_fireworks3;
+ u32 firmware_version;
+
+ unsigned int midi_in_ports;
+diff --git a/sound/firewire/fireworks/fireworks_stream.c b/sound/firewire/fireworks/fireworks_stream.c
+index c55db1bddc80..7e353f1f7bff 100644
+--- a/sound/firewire/fireworks/fireworks_stream.c
++++ b/sound/firewire/fireworks/fireworks_stream.c
+@@ -172,6 +172,15 @@ int snd_efw_stream_init_duplex(struct snd_efw *efw)
+ efw->tx_stream.flags |= CIP_DBC_IS_END_EVENT;
+ /* Fireworks reset dbc at bus reset. */
+ efw->tx_stream.flags |= CIP_SKIP_DBC_ZERO_CHECK;
++ /*
++ * But Recent firmwares starts packets with non-zero dbc.
++ * Driver version 5.7.6 installs firmware version 5.7.3.
++ */
++ if (efw->is_fireworks3 &&
++ (efw->firmware_version == 0x5070000 ||
++ efw->firmware_version == 0x5070300 ||
++ efw->firmware_version == 0x5080000))
++ efw->tx_stream.tx_first_dbc = 0x02;
+ /* AudioFire9 always reports wrong dbs. */
+ if (efw->is_af9)
+ efw->tx_stream.flags |= CIP_WRONG_DBS;
+diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
+index 50e9dd675579..3a24f7739aaa 100644
+--- a/sound/pci/hda/patch_cirrus.c
++++ b/sound/pci/hda/patch_cirrus.c
+@@ -1001,9 +1001,7 @@ static void cs4210_spdif_automute(struct hda_codec *codec,
+
+ spec->spdif_present = spdif_present;
+ /* SPDIF TX on/off */
+- if (spdif_present)
+- snd_hda_set_pin_ctl(codec, spdif_pin,
+- spdif_present ? PIN_OUT : 0);
++ snd_hda_set_pin_ctl(codec, spdif_pin, spdif_present ? PIN_OUT : 0);
+
+ cs_automute(codec);
+ }
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 590bcfb0e82f..1e99f075a5ab 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -5118,6 +5118,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x06c7, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
++ SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
+diff --git a/sound/soc/codecs/pcm1681.c b/sound/soc/codecs/pcm1681.c
+index 477e13d30971..e7ba557979cb 100644
+--- a/sound/soc/codecs/pcm1681.c
++++ b/sound/soc/codecs/pcm1681.c
+@@ -102,7 +102,7 @@ static int pcm1681_set_deemph(struct snd_soc_codec *codec)
+
+ if (val != -1) {
+ regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
+- PCM1681_DEEMPH_RATE_MASK, val);
++ PCM1681_DEEMPH_RATE_MASK, val << 3);
+ enable = 1;
+ } else
+ enable = 0;
+diff --git a/sound/soc/codecs/ssm4567.c b/sound/soc/codecs/ssm4567.c
+index a984485108cd..f7549cc7ea85 100644
+--- a/sound/soc/codecs/ssm4567.c
++++ b/sound/soc/codecs/ssm4567.c
+@@ -315,7 +315,13 @@ static int ssm4567_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+ if (invert_fclk)
+ ctrl1 |= SSM4567_SAI_CTRL_1_FSYNC;
+
+- return regmap_write(ssm4567->regmap, SSM4567_REG_SAI_CTRL_1, ctrl1);
++ return regmap_update_bits(ssm4567->regmap, SSM4567_REG_SAI_CTRL_1,
++ SSM4567_SAI_CTRL_1_BCLK |
++ SSM4567_SAI_CTRL_1_FSYNC |
++ SSM4567_SAI_CTRL_1_LJ |
++ SSM4567_SAI_CTRL_1_TDM |
++ SSM4567_SAI_CTRL_1_PDM,
++ ctrl1);
+ }
+
+ static int ssm4567_set_power(struct ssm4567 *ssm4567, bool enable)
+diff --git a/sound/soc/intel/atom/sst/sst_drv_interface.c b/sound/soc/intel/atom/sst/sst_drv_interface.c
+index 7b50a9d17ec1..edc186908358 100644
+--- a/sound/soc/intel/atom/sst/sst_drv_interface.c
++++ b/sound/soc/intel/atom/sst/sst_drv_interface.c
+@@ -42,6 +42,11 @@
+ #define MIN_FRAGMENT_SIZE (50 * 1024)
+ #define MAX_FRAGMENT_SIZE (1024 * 1024)
+ #define SST_GET_BYTES_PER_SAMPLE(pcm_wd_sz) (((pcm_wd_sz + 15) >> 4) << 1)
++#ifdef CONFIG_PM
++#define GET_USAGE_COUNT(dev) (atomic_read(&dev->power.usage_count))
++#else
++#define GET_USAGE_COUNT(dev) 1
++#endif
+
+ int free_stream_context(struct intel_sst_drv *ctx, unsigned int str_id)
+ {
+@@ -141,15 +146,9 @@ static int sst_power_control(struct device *dev, bool state)
+ int ret = 0;
+ int usage_count = 0;
+
+-#ifdef CONFIG_PM
+- usage_count = atomic_read(&dev->power.usage_count);
+-#else
+- usage_count = 1;
+-#endif
+-
+ if (state == true) {
+ ret = pm_runtime_get_sync(dev);
+-
++ usage_count = GET_USAGE_COUNT(dev);
+ dev_dbg(ctx->dev, "Enable: pm usage count: %d\n", usage_count);
+ if (ret < 0) {
+ dev_err(ctx->dev, "Runtime get failed with err: %d\n", ret);
+@@ -164,6 +163,7 @@ static int sst_power_control(struct device *dev, bool state)
+ }
+ }
+ } else {
++ usage_count = GET_USAGE_COUNT(dev);
+ dev_dbg(ctx->dev, "Disable: pm usage count: %d\n", usage_count);
+ return sst_pm_runtime_put(ctx);
+ }
+diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
+index 158204d08924..b6c12dccb259 100644
+--- a/sound/soc/soc-dapm.c
++++ b/sound/soc/soc-dapm.c
+@@ -1811,6 +1811,7 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
+ size_t count, loff_t *ppos)
+ {
+ struct snd_soc_dapm_widget *w = file->private_data;
++ struct snd_soc_card *card = w->dapm->card;
+ char *buf;
+ int in, out;
+ ssize_t ret;
+@@ -1820,6 +1821,8 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
+ if (!buf)
+ return -ENOMEM;
+
++ mutex_lock(&card->dapm_mutex);
++
+ /* Supply widgets are not handled by is_connected_{input,output}_ep() */
+ if (w->is_supply) {
+ in = 0;
+@@ -1866,6 +1869,8 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
+ p->sink->name);
+ }
+
++ mutex_unlock(&card->dapm_mutex);
++
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+
+ kfree(buf);
+@@ -2140,11 +2145,15 @@ static ssize_t dapm_widget_show(struct device *dev,
+ struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
+ int i, count = 0;
+
++ mutex_lock(&rtd->card->dapm_mutex);
++
+ for (i = 0; i < rtd->num_codecs; i++) {
+ struct snd_soc_codec *codec = rtd->codec_dais[i]->codec;
+ count += dapm_widget_show_codec(codec, buf + count);
+ }
+
++ mutex_unlock(&rtd->card->dapm_mutex);
++
+ return count;
+ }
+
+@@ -3100,16 +3109,10 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
+ }
+
+ prefix = soc_dapm_prefix(dapm);
+- if (prefix) {
++ if (prefix)
+ w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
+- if (widget->sname)
+- w->sname = kasprintf(GFP_KERNEL, "%s %s", prefix,
+- widget->sname);
+- } else {
++ else
+ w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
+- if (widget->sname)
+- w->sname = kasprintf(GFP_KERNEL, "%s", widget->sname);
+- }
+ if (w->name == NULL) {
+ kfree(w);
+ return NULL;
+@@ -3557,7 +3560,7 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
+ break;
+ }
+
+- if (!w->sname || !strstr(w->sname, dai_w->name))
++ if (!w->sname || !strstr(w->sname, dai_w->sname))
+ continue;
+
+ if (dai_w->id == snd_soc_dapm_dai_in) {
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-08-12 14:17 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-08-12 14:17 UTC (permalink / raw
To: gentoo-commits
commit: bf5ec0ef3757347790f7c0269c3a657e2d1fdd2b
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Aug 12 14:17:29 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Aug 12 14:17:29 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=bf5ec0ef
kdbus patch update 8-12-2015
0000_README | 2 +-
...s-7-22-2015.patch => 5015_kdbus-8-12-2015.patch | 1265 ++++++++++++--------
2 files changed, 757 insertions(+), 510 deletions(-)
diff --git a/0000_README b/0000_README
index 148063b..fd7a57d 100644
--- a/0000_README
+++ b/0000_README
@@ -115,6 +115,6 @@ Patch: 5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
From: https://github.com/graysky2/kernel_gcc_patch/
Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs.
-Patch: 5015_kdbus-7-22-15.patch
+Patch: 5015_kdbus-8-12-2015.patch
From: https://lkml.org
Desc: Kernel-level IPC implementation
diff --git a/5015_kdbus-7-22-2015.patch b/5015_kdbus-8-12-2015.patch
similarity index 97%
rename from 5015_kdbus-7-22-2015.patch
rename to 5015_kdbus-8-12-2015.patch
index b110b5c..4e018f2 100644
--- a/5015_kdbus-7-22-2015.patch
+++ b/5015_kdbus-8-12-2015.patch
@@ -7482,10 +7482,10 @@ index 1a0006a..4842a98 100644
header-y += kernelcapi.h
diff --git a/include/uapi/linux/kdbus.h b/include/uapi/linux/kdbus.h
new file mode 100644
-index 0000000..ecffc6b
+index 0000000..4fc44cb
--- /dev/null
+++ b/include/uapi/linux/kdbus.h
-@@ -0,0 +1,980 @@
+@@ -0,0 +1,984 @@
+/*
+ * kdbus is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the
@@ -8342,6 +8342,8 @@ index 0000000..ecffc6b
+ * @KDBUS_NAME_QUEUE: Name should be queued if busy
+ * @KDBUS_NAME_IN_QUEUE: Name is queued
+ * @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
++ * @KDBUS_NAME_PRIMARY: Primary owner of the name
++ * @KDBUS_NAME_ACQUIRED: Name was acquired/queued _now_
+ */
+enum kdbus_name_flags {
+ KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0,
@@ -8349,6 +8351,8 @@ index 0000000..ecffc6b
+ KDBUS_NAME_QUEUE = 1ULL << 2,
+ KDBUS_NAME_IN_QUEUE = 1ULL << 3,
+ KDBUS_NAME_ACTIVATOR = 1ULL << 4,
++ KDBUS_NAME_PRIMARY = 1ULL << 5,
++ KDBUS_NAME_ACQUIRED = 1ULL << 6,
+};
+
+/**
@@ -9072,10 +9076,10 @@ index 0000000..a67f825
+}
diff --git a/ipc/kdbus/bus.h b/ipc/kdbus/bus.h
new file mode 100644
-index 0000000..238986e
+index 0000000..8c2acae
--- /dev/null
+++ b/ipc/kdbus/bus.h
-@@ -0,0 +1,99 @@
+@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -9122,6 +9126,7 @@ index 0000000..238986e
+ * @domain: Domain of this bus
+ * @creator: Creator of the bus
+ * @creator_meta: Meta information about the bus creator
++ * @last_message_id: Last used message id
+ * @policy_db: Policy database for this bus
+ * @name_registry: Name registry of this bus
+ * @conn_rwlock: Read/Write lock for all lists of child connections
@@ -9145,6 +9150,7 @@ index 0000000..238986e
+ struct kdbus_meta_proc *creator_meta;
+
+ /* protected by own locks */
++ atomic64_t last_message_id;
+ struct kdbus_policy_db policy_db;
+ struct kdbus_name_registry *name_registry;
+
@@ -9177,10 +9183,10 @@ index 0000000..238986e
+#endif
diff --git a/ipc/kdbus/connection.c b/ipc/kdbus/connection.c
new file mode 100644
-index 0000000..d94b417e
+index 0000000..ef63d65
--- /dev/null
+++ b/ipc/kdbus/connection.c
-@@ -0,0 +1,2207 @@
+@@ -0,0 +1,2227 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -9235,7 +9241,8 @@ index 0000000..d94b417e
+#define KDBUS_CONN_ACTIVE_BIAS (INT_MIN + 2)
+#define KDBUS_CONN_ACTIVE_NEW (INT_MIN + 1)
+
-+static struct kdbus_conn *kdbus_conn_new(struct kdbus_ep *ep, bool privileged,
++static struct kdbus_conn *kdbus_conn_new(struct kdbus_ep *ep,
++ struct file *file,
+ struct kdbus_cmd_hello *hello,
+ const char *name,
+ const struct kdbus_creds *creds,
@@ -9255,6 +9262,8 @@ index 0000000..d94b417e
+ bool is_policy_holder;
+ bool is_activator;
+ bool is_monitor;
++ bool privileged;
++ bool owner;
+ struct kvec kvec;
+ int ret;
+
@@ -9264,6 +9273,9 @@ index 0000000..d94b417e
+ struct kdbus_bloom_parameter bloom;
+ } bloom_item;
+
++ privileged = kdbus_ep_is_privileged(ep, file);
++ owner = kdbus_ep_is_owner(ep, file);
++
+ is_monitor = hello->flags & KDBUS_HELLO_MONITOR;
+ is_activator = hello->flags & KDBUS_HELLO_ACTIVATOR;
+ is_policy_holder = hello->flags & KDBUS_HELLO_POLICY_HOLDER;
@@ -9280,9 +9292,9 @@ index 0000000..d94b417e
+ return ERR_PTR(-EINVAL);
+ if (is_monitor && ep->user)
+ return ERR_PTR(-EOPNOTSUPP);
-+ if (!privileged && (is_activator || is_policy_holder || is_monitor))
++ if (!owner && (is_activator || is_policy_holder || is_monitor))
+ return ERR_PTR(-EPERM);
-+ if ((creds || pids || seclabel) && !privileged)
++ if (!owner && (creds || pids || seclabel))
+ return ERR_PTR(-EPERM);
+
+ ret = kdbus_sanitize_attach_flags(hello->attach_flags_send,
@@ -9306,18 +9318,17 @@ index 0000000..d94b417e
+#endif
+ mutex_init(&conn->lock);
+ INIT_LIST_HEAD(&conn->names_list);
-+ INIT_LIST_HEAD(&conn->names_queue_list);
+ INIT_LIST_HEAD(&conn->reply_list);
-+ atomic_set(&conn->name_count, 0);
+ atomic_set(&conn->request_count, 0);
+ atomic_set(&conn->lost_count, 0);
+ INIT_DELAYED_WORK(&conn->work, kdbus_reply_list_scan_work);
-+ conn->cred = get_current_cred();
++ conn->cred = get_cred(file->f_cred);
+ conn->pid = get_pid(task_pid(current));
+ get_fs_root(current->fs, &conn->root_path);
+ init_waitqueue_head(&conn->wait);
+ kdbus_queue_init(&conn->queue);
+ conn->privileged = privileged;
++ conn->owner = owner;
+ conn->ep = kdbus_ep_ref(ep);
+ conn->id = atomic64_inc_return(&bus->domain->last_id);
+ conn->flags = hello->flags;
@@ -9397,11 +9408,21 @@ index 0000000..d94b417e
+ * Note that limits are always accounted against the real UID, not
+ * the effective UID (cred->user always points to the accounting of
+ * cred->uid, not cred->euid).
++ * In case the caller is privileged, we allow changing the accounting
++ * to the faked user.
+ */
+ if (ep->user) {
+ conn->user = kdbus_user_ref(ep->user);
+ } else {
-+ conn->user = kdbus_user_lookup(ep->bus->domain, current_uid());
++ kuid_t uid;
++
++ if (conn->meta_fake && uid_valid(conn->meta_fake->uid) &&
++ conn->privileged)
++ uid = conn->meta_fake->uid;
++ else
++ uid = conn->cred->uid;
++
++ conn->user = kdbus_user_lookup(ep->bus->domain, uid);
+ if (IS_ERR(conn->user)) {
+ ret = PTR_ERR(conn->user);
+ conn->user = NULL;
@@ -9450,7 +9471,6 @@ index 0000000..d94b417e
+ WARN_ON(delayed_work_pending(&conn->work));
+ WARN_ON(!list_empty(&conn->queue.msg_list));
+ WARN_ON(!list_empty(&conn->names_list));
-+ WARN_ON(!list_empty(&conn->names_queue_list));
+ WARN_ON(!list_empty(&conn->reply_list));
+
+ if (conn->user) {
@@ -9784,12 +9804,13 @@ index 0000000..d94b417e
+ */
+bool kdbus_conn_has_name(struct kdbus_conn *conn, const char *name)
+{
-+ struct kdbus_name_entry *e;
++ struct kdbus_name_owner *owner;
+
+ lockdep_assert_held(&conn->ep->bus->name_registry->rwlock);
+
-+ list_for_each_entry(e, &conn->names_list, conn_entry)
-+ if (strcmp(e->name, name) == 0)
++ list_for_each_entry(owner, &conn->names_list, conn_entry)
++ if (!(owner->flags & KDBUS_NAME_IN_QUEUE) &&
++ !strcmp(name, owner->name->name))
+ return true;
+
+ return false;
@@ -10218,6 +10239,7 @@ index 0000000..d94b417e
+ struct kdbus_conn **out_dst)
+{
+ const struct kdbus_msg *msg = staging->msg;
++ struct kdbus_name_owner *owner = NULL;
+ struct kdbus_name_entry *name = NULL;
+ struct kdbus_conn *dst = NULL;
+ int ret;
@@ -10236,7 +10258,9 @@ index 0000000..d94b417e
+ } else {
+ name = kdbus_name_lookup_unlocked(bus->name_registry,
+ staging->dst_name);
-+ if (!name)
++ if (name)
++ owner = kdbus_name_get_owner(name);
++ if (!owner)
+ return -ESRCH;
+
+ /*
@@ -10248,19 +10272,14 @@ index 0000000..d94b417e
+ * owns the given name.
+ */
+ if (msg->dst_id != KDBUS_DST_ID_NAME &&
-+ msg->dst_id != name->conn->id)
++ msg->dst_id != owner->conn->id)
+ return -EREMCHG;
+
-+ if (!name->conn && name->activator)
-+ dst = kdbus_conn_ref(name->activator);
-+ else
-+ dst = kdbus_conn_ref(name->conn);
-+
+ if ((msg->flags & KDBUS_MSG_NO_AUTO_START) &&
-+ kdbus_conn_is_activator(dst)) {
-+ ret = -EADDRNOTAVAIL;
-+ goto error;
-+ }
++ kdbus_conn_is_activator(owner->conn))
++ return -EADDRNOTAVAIL;
++
++ dst = kdbus_conn_ref(owner->conn);
+ }
+
+ *out_name = name;
@@ -10306,7 +10325,7 @@ index 0000000..d94b417e
+ mutex_unlock(&dst->lock);
+
+ if (!reply) {
-+ ret = -EPERM;
++ ret = -EBADSLT;
+ goto exit;
+ }
+
@@ -10549,7 +10568,7 @@ index 0000000..d94b417e
+ struct kdbus_conn *whom,
+ unsigned int access)
+{
-+ struct kdbus_name_entry *ne;
++ struct kdbus_name_owner *owner;
+ bool pass = false;
+ int res;
+
@@ -10558,10 +10577,14 @@ index 0000000..d94b417e
+ down_read(&db->entries_rwlock);
+ mutex_lock(&whom->lock);
+
-+ list_for_each_entry(ne, &whom->names_list, conn_entry) {
-+ res = kdbus_policy_query_unlocked(db, conn_creds ? : conn->cred,
-+ ne->name,
-+ kdbus_strhash(ne->name));
++ list_for_each_entry(owner, &whom->names_list, conn_entry) {
++ if (owner->flags & KDBUS_NAME_IN_QUEUE)
++ continue;
++
++ res = kdbus_policy_query_unlocked(db,
++ conn_creds ? : conn->cred,
++ owner->name->name,
++ kdbus_strhash(owner->name->name));
+ if (res >= (int)access) {
+ pass = true;
+ break;
@@ -10601,7 +10624,7 @@ index 0000000..d94b417e
+ return false;
+ }
+
-+ if (conn->privileged)
++ if (conn->owner)
+ return true;
+
+ res = kdbus_policy_query(&conn->ep->bus->policy_db, conn_creds,
@@ -10631,7 +10654,7 @@ index 0000000..d94b417e
+ to, KDBUS_POLICY_TALK))
+ return false;
+
-+ if (conn->privileged)
++ if (conn->owner)
+ return true;
+ if (uid_eq(conn_creds->euid, to->cred->uid))
+ return true;
@@ -10750,12 +10773,12 @@ index 0000000..d94b417e
+/**
+ * kdbus_cmd_hello() - handle KDBUS_CMD_HELLO
+ * @ep: Endpoint to operate on
-+ * @privileged: Whether the caller is privileged
++ * @file: File this connection is opened on
+ * @argp: Command payload
+ *
+ * Return: NULL or newly created connection on success, ERR_PTR on failure.
+ */
-+struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, bool privileged,
++struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, struct file *file,
+ void __user *argp)
+{
+ struct kdbus_cmd_hello *cmd;
@@ -10790,7 +10813,7 @@ index 0000000..d94b417e
+
+ item_name = argv[1].item ? argv[1].item->str : NULL;
+
-+ c = kdbus_conn_new(ep, privileged, cmd, item_name,
++ c = kdbus_conn_new(ep, file, cmd, item_name,
+ argv[2].item ? &argv[2].item->creds : NULL,
+ argv[3].item ? &argv[3].item->pids : NULL,
+ argv[4].item ? argv[4].item->str : NULL,
@@ -10879,6 +10902,7 @@ index 0000000..d94b417e
+ struct kdbus_meta_conn *conn_meta = NULL;
+ struct kdbus_pool_slice *slice = NULL;
+ struct kdbus_name_entry *entry = NULL;
++ struct kdbus_name_owner *owner = NULL;
+ struct kdbus_conn *owner_conn = NULL;
+ struct kdbus_item *meta_items = NULL;
+ struct kdbus_info info = {};
@@ -10915,15 +10939,17 @@ index 0000000..d94b417e
+
+ if (name) {
+ entry = kdbus_name_lookup_unlocked(bus->name_registry, name);
-+ if (!entry || !entry->conn ||
++ if (entry)
++ owner = kdbus_name_get_owner(entry);
++ if (!owner ||
+ !kdbus_conn_policy_see_name(conn, current_cred(), name) ||
-+ (cmd->id != 0 && entry->conn->id != cmd->id)) {
++ (cmd->id != 0 && owner->conn->id != cmd->id)) {
+ /* pretend a name doesn't exist if you cannot see it */
+ ret = -ESRCH;
+ goto exit;
+ }
+
-+ owner_conn = kdbus_conn_ref(entry->conn);
++ owner_conn = kdbus_conn_ref(owner->conn);
+ } else if (cmd->id > 0) {
+ owner_conn = kdbus_bus_find_conn_by_id(bus, cmd->id);
+ if (!owner_conn || !kdbus_conn_policy_see(conn, current_cred(),
@@ -11390,10 +11416,10 @@ index 0000000..d94b417e
+}
diff --git a/ipc/kdbus/connection.h b/ipc/kdbus/connection.h
new file mode 100644
-index 0000000..5ee864e
+index 0000000..1ad0820
--- /dev/null
+++ b/ipc/kdbus/connection.h
-@@ -0,0 +1,261 @@
+@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -11426,6 +11452,7 @@ index 0000000..5ee864e
+ KDBUS_HELLO_POLICY_HOLDER | \
+ KDBUS_HELLO_MONITOR)
+
++struct kdbus_name_entry;
+struct kdbus_quota;
+struct kdbus_staging;
+
@@ -11457,7 +11484,6 @@ index 0000000..5ee864e
+ * @cred: The credentials of the connection at creation time
+ * @pid: Pid at creation time
+ * @root_path: Root path at creation time
-+ * @name_count: Number of owned well-known names
+ * @request_count: Number of pending requests issued by this
+ * connection that are waiting for replies from
+ * other peers
@@ -11466,10 +11492,10 @@ index 0000000..5ee864e
+ * @queue: The message queue associated with this connection
+ * @quota: Array of per-user quota indexed by user->id
+ * @n_quota: Number of elements in quota array
-+ * @activator_of: Well-known name entry this connection acts as an
+ * @names_list: List of well-known names
-+ * @names_queue_list: Well-known names this connection waits for
-+ * @privileged: Whether this connection is privileged on the bus
++ * @name_count: Number of owned well-known names
++ * @privileged: Whether this connection is privileged on the domain
++ * @owner: Owned by the same user as the bus owner
+ */
+struct kdbus_conn {
+ struct kref kref;
@@ -11497,7 +11523,6 @@ index 0000000..5ee864e
+ const struct cred *cred;
+ struct pid *pid;
+ struct path root_path;
-+ atomic_t name_count;
+ atomic_t request_count;
+ atomic_t lost_count;
+ wait_queue_head_t wait;
@@ -11507,11 +11532,11 @@ index 0000000..5ee864e
+ unsigned int n_quota;
+
+ /* protected by registry->rwlock */
-+ struct kdbus_name_entry *activator_of;
+ struct list_head names_list;
-+ struct list_head names_queue_list;
++ unsigned int name_count;
+
+ bool privileged:1;
++ bool owner:1;
+};
+
+struct kdbus_conn *kdbus_conn_ref(struct kdbus_conn *conn);
@@ -11550,7 +11575,7 @@ index 0000000..5ee864e
+ const struct kdbus_msg *msg);
+
+/* command dispatcher */
-+struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, bool privileged,
++struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, struct file *file,
+ void __user *argp);
+int kdbus_cmd_byebye_unlocked(struct kdbus_conn *conn, void __user *argp);
+int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp);
@@ -12042,10 +12067,10 @@ index 0000000..447a2bd
+#endif
diff --git a/ipc/kdbus/endpoint.c b/ipc/kdbus/endpoint.c
new file mode 100644
-index 0000000..977964d
+index 0000000..44e7a20
--- /dev/null
+++ b/ipc/kdbus/endpoint.c
-@@ -0,0 +1,275 @@
+@@ -0,0 +1,303 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -12232,6 +12257,34 @@ index 0000000..977964d
+}
+
+/**
++ * kdbus_ep_is_privileged() - check whether a file is privileged
++ * @ep: endpoint to operate on
++ * @file: file to test
++ *
++ * Return: True if @file is privileged in the domain of @ep.
++ */
++bool kdbus_ep_is_privileged(struct kdbus_ep *ep, struct file *file)
++{
++ return !ep->user &&
++ file_ns_capable(file, ep->bus->domain->user_namespace,
++ CAP_IPC_OWNER);
++}
++
++/**
++ * kdbus_ep_is_owner() - check whether a file should be treated as bus owner
++ * @ep: endpoint to operate on
++ * @file: file to test
++ *
++ * Return: True if @file should be treated as bus owner on @ep
++ */
++bool kdbus_ep_is_owner(struct kdbus_ep *ep, struct file *file)
++{
++ return !ep->user &&
++ (uid_eq(file->f_cred->euid, ep->bus->node.uid) ||
++ kdbus_ep_is_privileged(ep, file));
++}
++
++/**
+ * kdbus_cmd_ep_make() - handle KDBUS_CMD_ENDPOINT_MAKE
+ * @bus: bus to operate on
+ * @argp: command payload
@@ -12323,10 +12376,10 @@ index 0000000..977964d
+}
diff --git a/ipc/kdbus/endpoint.h b/ipc/kdbus/endpoint.h
new file mode 100644
-index 0000000..bc1b94a
+index 0000000..e0da59f
--- /dev/null
+++ b/ipc/kdbus/endpoint.h
-@@ -0,0 +1,67 @@
+@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -12390,6 +12443,9 @@ index 0000000..bc1b94a
+struct kdbus_ep *kdbus_ep_ref(struct kdbus_ep *ep);
+struct kdbus_ep *kdbus_ep_unref(struct kdbus_ep *ep);
+
++bool kdbus_ep_is_privileged(struct kdbus_ep *ep, struct file *file);
++bool kdbus_ep_is_owner(struct kdbus_ep *ep, struct file *file);
++
+struct kdbus_ep *kdbus_cmd_ep_make(struct kdbus_bus *bus, void __user *argp);
+int kdbus_cmd_ep_update(struct kdbus_ep *ep, void __user *argp);
+
@@ -12944,10 +13000,10 @@ index 0000000..62f7d6a
+#endif
diff --git a/ipc/kdbus/handle.c b/ipc/kdbus/handle.c
new file mode 100644
-index 0000000..e0e06b0
+index 0000000..fc60932
--- /dev/null
+++ b/ipc/kdbus/handle.c
-@@ -0,0 +1,709 @@
+@@ -0,0 +1,691 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -13214,7 +13270,6 @@ index 0000000..e0e06b0
+ * @bus_owner: bus this handle owns
+ * @ep_owner: endpoint this handle owns
+ * @conn: connection this handle owns
-+ * @privileged: Flag to mark a handle as privileged
+ */
+struct kdbus_handle {
+ struct mutex lock;
@@ -13225,8 +13280,6 @@ index 0000000..e0e06b0
+ struct kdbus_ep *ep_owner;
+ struct kdbus_conn *conn;
+ };
-+
-+ bool privileged:1;
+};
+
+static int kdbus_handle_open(struct inode *inode, struct file *file)
@@ -13248,23 +13301,6 @@ index 0000000..e0e06b0
+ mutex_init(&handle->lock);
+ handle->type = KDBUS_HANDLE_NONE;
+
-+ if (node->type == KDBUS_NODE_ENDPOINT) {
-+ struct kdbus_ep *ep = kdbus_ep_from_node(node);
-+ struct kdbus_bus *bus = ep->bus;
-+
-+ /*
-+ * A connection is privileged if it is opened on an endpoint
-+ * without custom policy and either:
-+ * * the user has CAP_IPC_OWNER in the domain user namespace
-+ * or
-+ * * the callers euid matches the uid of the bus creator
-+ */
-+ if (!ep->user &&
-+ (ns_capable(bus->domain->user_namespace, CAP_IPC_OWNER) ||
-+ uid_eq(file->f_cred->euid, bus->node.uid)))
-+ handle->privileged = true;
-+ }
-+
+ file->private_data = handle;
+ ret = 0;
+
@@ -13356,6 +13392,7 @@ index 0000000..e0e06b0
+ struct kdbus_handle *handle = file->private_data;
+ struct kdbus_node *node = file_inode(file)->i_private;
+ struct kdbus_ep *ep, *file_ep = kdbus_ep_from_node(node);
++ struct kdbus_bus *bus = file_ep->bus;
+ struct kdbus_conn *conn;
+ int ret = 0;
+
@@ -13363,14 +13400,14 @@ index 0000000..e0e06b0
+ return -ESHUTDOWN;
+
+ switch (cmd) {
-+ case KDBUS_CMD_ENDPOINT_MAKE:
++ case KDBUS_CMD_ENDPOINT_MAKE: {
+ /* creating custom endpoints is a privileged operation */
-+ if (!handle->privileged) {
++ if (!kdbus_ep_is_owner(file_ep, file)) {
+ ret = -EPERM;
+ break;
+ }
+
-+ ep = kdbus_cmd_ep_make(file_ep->bus, buf);
++ ep = kdbus_cmd_ep_make(bus, buf);
+ if (IS_ERR_OR_NULL(ep)) {
+ ret = PTR_ERR_OR_ZERO(ep);
+ break;
@@ -13379,9 +13416,10 @@ index 0000000..e0e06b0
+ handle->ep_owner = ep;
+ ret = KDBUS_HANDLE_EP_OWNER;
+ break;
++ }
+
+ case KDBUS_CMD_HELLO:
-+ conn = kdbus_cmd_hello(file_ep, handle->privileged, buf);
++ conn = kdbus_cmd_hello(file_ep, file, buf);
+ if (IS_ERR_OR_NULL(conn)) {
+ ret = PTR_ERR_OR_ZERO(conn);
+ break;
@@ -13659,7 +13697,7 @@ index 0000000..e0e06b0
+};
diff --git a/ipc/kdbus/handle.h b/ipc/kdbus/handle.h
new file mode 100644
-index 0000000..8a36c05
+index 0000000..5dde2c1
--- /dev/null
+++ b/ipc/kdbus/handle.h
@@ -0,0 +1,103 @@
@@ -13710,7 +13748,7 @@ index 0000000..8a36c05
+ * @argv: array of items this command supports
+ * @user: set by parser to user-space location of current command
+ * @cmd: set by parser to kernel copy of command payload
-+ * @cmd_buf: 512 bytes inline buf to avoid kmalloc() on small cmds
++ * @cmd_buf: inline buf to avoid kmalloc() on small cmds
+ * @items: points to item array in @cmd
+ * @items_size: size of @items in bytes
+ * @is_cmd: whether this is a command-payload or msg-payload
@@ -13720,7 +13758,7 @@ index 0000000..8a36c05
+ * the object to kdbus_args_parse(). The parser will copy the command payload
+ * into kernel-space and verify the correctness of the data.
+ *
-+ * We use a 512 bytes buffer for small command payloads, to be allocated on
++ * We use a 256 bytes buffer for small command payloads, to be allocated on
+ * stack on syscall entrance.
+ */
+struct kdbus_args {
@@ -13730,7 +13768,7 @@ index 0000000..8a36c05
+
+ struct kdbus_cmd __user *user;
+ struct kdbus_cmd *cmd;
-+ u8 cmd_buf[512];
++ u8 cmd_buf[256];
+
+ struct kdbus_item *items;
+ size_t items_size;
@@ -14914,7 +14952,7 @@ index 0000000..ceb492f
+#endif
diff --git a/ipc/kdbus/message.c b/ipc/kdbus/message.c
new file mode 100644
-index 0000000..3520f45
+index 0000000..ae565cd
--- /dev/null
+++ b/ipc/kdbus/message.c
@@ -0,0 +1,1040 @@
@@ -15591,7 +15629,7 @@ index 0000000..3520f45
+ if (!staging)
+ return ERR_PTR(-ENOMEM);
+
-+ staging->msg_seqnum = atomic64_inc_return(&bus->domain->last_id);
++ staging->msg_seqnum = atomic64_inc_return(&bus->last_message_id);
+ staging->n_parts = 0; /* we reserve n_parts, but don't enforce them */
+ staging->parts = (void *)(staging + 1);
+
@@ -15806,9 +15844,9 @@ index 0000000..3520f45
+{
+ struct kdbus_item *item, *meta_items = NULL;
+ struct kdbus_pool_slice *slice = NULL;
-+ size_t off, size, msg_size, meta_size;
++ size_t off, size, meta_size;
+ struct iovec *v;
-+ u64 attach;
++ u64 attach, msg_size;
+ int ret;
+
+ /*
@@ -15840,7 +15878,7 @@ index 0000000..3520f45
+
+ /* msg.size */
+ v->iov_len = sizeof(msg_size);
-+ v->iov_base = &msg_size;
++ v->iov_base = (void __user *)&msg_size;
+ ++v;
+
+ /* msg (after msg.size) plus items */
@@ -15857,7 +15895,7 @@ index 0000000..3520f45
+ if (meta_size > 0) {
+ /* metadata items */
+ v->iov_len = meta_size;
-+ v->iov_base = meta_items;
++ v->iov_base = (void __user *)meta_items;
+ ++v;
+
+ /* padding after metadata */
@@ -16086,10 +16124,10 @@ index 0000000..298f9c9
+#endif
diff --git a/ipc/kdbus/metadata.c b/ipc/kdbus/metadata.c
new file mode 100644
-index 0000000..d4973a9
+index 0000000..71ca475
--- /dev/null
+++ b/ipc/kdbus/metadata.c
-@@ -0,0 +1,1342 @@
+@@ -0,0 +1,1347 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -16695,7 +16733,7 @@ index 0000000..d4973a9
+static int kdbus_meta_conn_collect_names(struct kdbus_meta_conn *mc,
+ struct kdbus_conn *conn)
+{
-+ const struct kdbus_name_entry *e;
++ const struct kdbus_name_owner *owner;
+ struct kdbus_item *item;
+ size_t slen, size;
+
@@ -16703,9 +16741,11 @@ index 0000000..d4973a9
+
+ size = 0;
+ /* open-code length calculation to avoid final padding */
-+ list_for_each_entry(e, &conn->names_list, conn_entry)
-+ size = KDBUS_ALIGN8(size) + KDBUS_ITEM_HEADER_SIZE +
-+ sizeof(struct kdbus_name) + strlen(e->name) + 1;
++ list_for_each_entry(owner, &conn->names_list, conn_entry)
++ if (!(owner->flags & KDBUS_NAME_IN_QUEUE))
++ size = KDBUS_ALIGN8(size) + KDBUS_ITEM_HEADER_SIZE +
++ sizeof(struct kdbus_name) +
++ strlen(owner->name->name) + 1;
+
+ if (!size)
+ return 0;
@@ -16718,12 +16758,15 @@ index 0000000..d4973a9
+ mc->owned_names_items = item;
+ mc->owned_names_size = size;
+
-+ list_for_each_entry(e, &conn->names_list, conn_entry) {
-+ slen = strlen(e->name) + 1;
++ list_for_each_entry(owner, &conn->names_list, conn_entry) {
++ if (owner->flags & KDBUS_NAME_IN_QUEUE)
++ continue;
++
++ slen = strlen(owner->name->name) + 1;
+ kdbus_item_set(item, KDBUS_ITEM_OWNED_NAME, NULL,
+ sizeof(struct kdbus_name) + slen);
-+ item->name.flags = e->flags;
-+ memcpy(item->name.name, e->name, slen);
++ item->name.flags = owner->flags;
++ memcpy(item->name.name, owner->name->name, slen);
+ item = KDBUS_ITEM_NEXT(item);
+ }
+
@@ -17526,10 +17569,10 @@ index 0000000..dba7cc7
+#endif
diff --git a/ipc/kdbus/names.c b/ipc/kdbus/names.c
new file mode 100644
-index 0000000..057f806
+index 0000000..bf44ca3
--- /dev/null
+++ b/ipc/kdbus/names.c
-@@ -0,0 +1,770 @@
+@@ -0,0 +1,854 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -17566,167 +17609,128 @@ index 0000000..057f806
+#include "notify.h"
+#include "policy.h"
+
-+struct kdbus_name_pending {
-+ u64 flags;
-+ struct kdbus_conn *conn;
-+ struct kdbus_name_entry *name;
-+ struct list_head conn_entry;
-+ struct list_head name_entry;
-+};
++#define KDBUS_NAME_SAVED_MASK (KDBUS_NAME_ALLOW_REPLACEMENT | \
++ KDBUS_NAME_QUEUE)
+
-+static int kdbus_name_pending_new(struct kdbus_name_entry *e,
-+ struct kdbus_conn *conn, u64 flags)
++static bool kdbus_name_owner_is_used(struct kdbus_name_owner *owner)
+{
-+ struct kdbus_name_pending *p;
-+
-+ kdbus_conn_assert_active(conn);
-+
-+ p = kmalloc(sizeof(*p), GFP_KERNEL);
-+ if (!p)
-+ return -ENOMEM;
-+
-+ p->flags = flags;
-+ p->conn = conn;
-+ p->name = e;
-+ list_add_tail(&p->conn_entry, &conn->names_queue_list);
-+ list_add_tail(&p->name_entry, &e->queue);
-+
-+ return 0;
++ return !list_empty(&owner->name_entry) ||
++ owner == owner->name->activator;
+}
+
-+static void kdbus_name_pending_free(struct kdbus_name_pending *p)
++static struct kdbus_name_owner *
++kdbus_name_owner_new(struct kdbus_conn *conn, struct kdbus_name_entry *name,
++ u64 flags)
+{
-+ if (!p)
-+ return;
++ struct kdbus_name_owner *owner;
+
-+ list_del(&p->name_entry);
-+ list_del(&p->conn_entry);
-+ kfree(p);
-+}
-+
-+static struct kdbus_name_entry *
-+kdbus_name_entry_new(struct kdbus_name_registry *r, u32 hash, const char *name)
-+{
-+ struct kdbus_name_entry *e;
-+ size_t namelen;
++ kdbus_conn_assert_active(conn);
+
-+ namelen = strlen(name);
++ if (conn->name_count >= KDBUS_CONN_MAX_NAMES)
++ return ERR_PTR(-E2BIG);
+
-+ e = kmalloc(sizeof(*e) + namelen + 1, GFP_KERNEL);
-+ if (!e)
++ owner = kmalloc(sizeof(*owner), GFP_KERNEL);
++ if (!owner)
+ return ERR_PTR(-ENOMEM);
+
-+ e->name_id = ++r->name_seq_last;
-+ e->flags = 0;
-+ e->conn = NULL;
-+ e->activator = NULL;
-+ INIT_LIST_HEAD(&e->queue);
-+ INIT_LIST_HEAD(&e->conn_entry);
-+ hash_add(r->entries_hash, &e->hentry, hash);
-+ memcpy(e->name, name, namelen + 1);
++ owner->flags = flags & KDBUS_NAME_SAVED_MASK;
++ owner->conn = conn;
++ owner->name = name;
++ list_add_tail(&owner->conn_entry, &conn->names_list);
++ INIT_LIST_HEAD(&owner->name_entry);
+
-+ return e;
++ ++conn->name_count;
++ return owner;
+}
+
-+static void kdbus_name_entry_free(struct kdbus_name_entry *e)
++static void kdbus_name_owner_free(struct kdbus_name_owner *owner)
+{
-+ if (!e)
++ if (!owner)
+ return;
+
-+ WARN_ON(!list_empty(&e->conn_entry));
-+ WARN_ON(!list_empty(&e->queue));
-+ WARN_ON(e->activator);
-+ WARN_ON(e->conn);
-+
-+ hash_del(&e->hentry);
-+ kfree(e);
++ WARN_ON(kdbus_name_owner_is_used(owner));
++ --owner->conn->name_count;
++ list_del(&owner->conn_entry);
++ kfree(owner);
+}
+
-+static void kdbus_name_entry_set_owner(struct kdbus_name_entry *e,
-+ struct kdbus_conn *conn, u64 flags)
++static struct kdbus_name_owner *
++kdbus_name_owner_find(struct kdbus_name_entry *name, struct kdbus_conn *conn)
+{
-+ WARN_ON(e->conn);
++ struct kdbus_name_owner *owner;
++
++ /*
++ * Use conn->names_list over name->queue to make sure boundaries of
++ * this linear search are controlled by the connection itself.
++ * Furthermore, this will find normal owners as well as activators
++ * without any additional code.
++ */
++ list_for_each_entry(owner, &conn->names_list, conn_entry)
++ if (owner->name == name)
++ return owner;
+
-+ e->conn = kdbus_conn_ref(conn);
-+ e->flags = flags;
-+ atomic_inc(&conn->name_count);
-+ list_add_tail(&e->conn_entry, &e->conn->names_list);
++ return NULL;
+}
+
-+static void kdbus_name_entry_remove_owner(struct kdbus_name_entry *e)
++static bool kdbus_name_entry_is_used(struct kdbus_name_entry *name)
+{
-+ WARN_ON(!e->conn);
-+
-+ list_del_init(&e->conn_entry);
-+ atomic_dec(&e->conn->name_count);
-+ e->flags = 0;
-+ e->conn = kdbus_conn_unref(e->conn);
++ return !list_empty(&name->queue) || name->activator;
+}
+
-+static void kdbus_name_entry_replace_owner(struct kdbus_name_entry *e,
-+ struct kdbus_conn *conn, u64 flags)
++static struct kdbus_name_owner *
++kdbus_name_entry_first(struct kdbus_name_entry *name)
+{
-+ if (WARN_ON(!e->conn) || WARN_ON(conn == e->conn))
-+ return;
-+
-+ kdbus_notify_name_change(conn->ep->bus, KDBUS_ITEM_NAME_CHANGE,
-+ e->conn->id, conn->id,
-+ e->flags, flags, e->name);
-+ kdbus_name_entry_remove_owner(e);
-+ kdbus_name_entry_set_owner(e, conn, flags);
++ return list_first_entry_or_null(&name->queue, struct kdbus_name_owner,
++ name_entry);
+}
+
-+/**
-+ * kdbus_name_is_valid() - check if a name is valid
-+ * @p: The name to check
-+ * @allow_wildcard: Whether or not to allow a wildcard name
-+ *
-+ * A name is valid if all of the following criterias are met:
-+ *
-+ * - The name has two or more elements separated by a period ('.') character.
-+ * - All elements must contain at least one character.
-+ * - Each element must only contain the ASCII characters "[A-Z][a-z][0-9]_-"
-+ * and must not begin with a digit.
-+ * - The name must not exceed KDBUS_NAME_MAX_LEN.
-+ * - If @allow_wildcard is true, the name may end on '.*'
-+ */
-+bool kdbus_name_is_valid(const char *p, bool allow_wildcard)
++static struct kdbus_name_entry *
++kdbus_name_entry_new(struct kdbus_name_registry *r, u32 hash,
++ const char *name_str)
+{
-+ bool dot, found_dot = false;
-+ const char *q;
++ struct kdbus_name_entry *name;
++ size_t namelen;
+
-+ for (dot = true, q = p; *q; q++) {
-+ if (*q == '.') {
-+ if (dot)
-+ return false;
++ lockdep_assert_held(&r->rwlock);
+
-+ found_dot = true;
-+ dot = true;
-+ } else {
-+ bool good;
++ namelen = strlen(name_str);
+
-+ good = isalpha(*q) || (!dot && isdigit(*q)) ||
-+ *q == '_' || *q == '-' ||
-+ (allow_wildcard && dot &&
-+ *q == '*' && *(q + 1) == '\0');
++ name = kmalloc(sizeof(*name) + namelen + 1, GFP_KERNEL);
++ if (!name)
++ return ERR_PTR(-ENOMEM);
+
-+ if (!good)
-+ return false;
++ name->name_id = ++r->name_seq_last;
++ name->activator = NULL;
++ INIT_LIST_HEAD(&name->queue);
++ hash_add(r->entries_hash, &name->hentry, hash);
++ memcpy(name->name, name_str, namelen + 1);
+
-+ dot = false;
-+ }
-+ }
++ return name;
++}
+
-+ if (q - p > KDBUS_NAME_MAX_LEN)
-+ return false;
++static void kdbus_name_entry_free(struct kdbus_name_entry *name)
++{
++ if (!name)
++ return;
+
-+ if (dot)
-+ return false;
++ WARN_ON(kdbus_name_entry_is_used(name));
++ hash_del(&name->hentry);
++ kfree(name);
++}
+
-+ if (!found_dot)
-+ return false;
++static struct kdbus_name_entry *
++kdbus_name_entry_find(struct kdbus_name_registry *r, u32 hash,
++ const char *name_str)
++{
++ struct kdbus_name_entry *name;
+
-+ return true;
++ lockdep_assert_held(&r->rwlock);
++
++ hash_for_each_possible(r->entries_hash, name, hentry, hash)
++ if (!strcmp(name->name, name_str))
++ return name;
++
++ return NULL;
+}
+
+/**
@@ -17750,32 +17754,19 @@ index 0000000..057f806
+}
+
+/**
-+ * kdbus_name_registry_free() - drop a name reg's reference
-+ * @reg: The name registry, may be %NULL
++ * kdbus_name_registry_free() - free name registry
++ * @r: name registry to free, or NULL
+ *
-+ * Cleanup the name registry's internal structures.
++ * Free a name registry and cleanup all internal objects. This is a no-op if
++ * you pass NULL as registry.
+ */
-+void kdbus_name_registry_free(struct kdbus_name_registry *reg)
++void kdbus_name_registry_free(struct kdbus_name_registry *r)
+{
-+ if (!reg)
++ if (!r)
+ return;
+
-+ WARN_ON(!hash_empty(reg->entries_hash));
-+ kfree(reg);
-+}
-+
-+static struct kdbus_name_entry *
-+kdbus_name_find(struct kdbus_name_registry *reg, u32 hash, const char *name)
-+{
-+ struct kdbus_name_entry *e;
-+
-+ lockdep_assert_held(®->rwlock);
-+
-+ hash_for_each_possible(reg->entries_hash, e, hentry, hash)
-+ if (strcmp(e->name, name) == 0)
-+ return e;
-+
-+ return NULL;
++ WARN_ON(!hash_empty(r->entries_hash));
++ kfree(r);
+}
+
+/**
@@ -17792,169 +17783,286 @@ index 0000000..057f806
+struct kdbus_name_entry *
+kdbus_name_lookup_unlocked(struct kdbus_name_registry *reg, const char *name)
+{
-+ return kdbus_name_find(reg, kdbus_strhash(name), name);
++ return kdbus_name_entry_find(reg, kdbus_strhash(name), name);
+}
+
-+/**
-+ * kdbus_name_acquire() - acquire a name
-+ * @reg: The name registry
-+ * @conn: The connection to pin this entry to
-+ * @name: The name to acquire
-+ * @flags: Acquisition flags (KDBUS_NAME_*)
-+ * @return_flags: Pointer to return flags for the acquired name
-+ * (KDBUS_NAME_*), may be %NULL
-+ *
-+ * Callers must ensure that @conn is either a privileged bus user or has
-+ * sufficient privileges in the policy-db to own the well-known name @name.
-+ *
-+ * Return: 0 success, negative error number on failure.
-+ */
-+int kdbus_name_acquire(struct kdbus_name_registry *reg,
-+ struct kdbus_conn *conn, const char *name,
-+ u64 flags, u64 *return_flags)
++static int kdbus_name_become_activator(struct kdbus_name_owner *owner,
++ u64 *return_flags)
+{
-+ struct kdbus_name_entry *e;
-+ u64 rflags = 0;
++ if (kdbus_name_owner_is_used(owner))
++ return -EALREADY;
++ if (owner->name->activator)
++ return -EEXIST;
++
++ owner->name->activator = owner;
++ owner->flags |= KDBUS_NAME_ACTIVATOR;
++
++ if (kdbus_name_entry_first(owner->name)) {
++ owner->flags |= KDBUS_NAME_IN_QUEUE;
++ } else {
++ owner->flags |= KDBUS_NAME_PRIMARY;
++ kdbus_notify_name_change(owner->conn->ep->bus,
++ KDBUS_ITEM_NAME_ADD,
++ 0, owner->conn->id,
++ 0, owner->flags,
++ owner->name->name);
++ }
++
++ if (return_flags)
++ *return_flags = owner->flags | KDBUS_NAME_ACQUIRED;
++
++ return 0;
++}
++
++static int kdbus_name_update(struct kdbus_name_owner *owner, u64 flags,
++ u64 *return_flags)
++{
++ struct kdbus_name_owner *primary, *activator;
++ struct kdbus_name_entry *name;
++ struct kdbus_bus *bus;
++ u64 nflags = 0;
+ int ret = 0;
-+ u32 hash;
+
-+ kdbus_conn_assert_active(conn);
++ name = owner->name;
++ bus = owner->conn->ep->bus;
++ primary = kdbus_name_entry_first(name);
++ activator = name->activator;
+
-+ down_write(®->rwlock);
++ /* cannot be activator and acquire a name */
++ if (owner == activator)
++ return -EUCLEAN;
+
-+ if (!kdbus_conn_policy_own_name(conn, current_cred(), name)) {
-+ ret = -EPERM;
-+ goto exit_unlock;
-+ }
++ /* update saved flags */
++ owner->flags = flags & KDBUS_NAME_SAVED_MASK;
+
-+ hash = kdbus_strhash(name);
-+ e = kdbus_name_find(reg, hash, name);
-+ if (!e) {
-+ /* claim new name */
++ if (!primary) {
++ /*
++ * No primary owner (but maybe an activator). Take over the
++ * name.
++ */
+
-+ if (conn->activator_of) {
-+ ret = -EINVAL;
-+ goto exit_unlock;
++ list_add(&owner->name_entry, &name->queue);
++ owner->flags |= KDBUS_NAME_PRIMARY;
++ nflags |= KDBUS_NAME_ACQUIRED;
++
++ /* move messages to new owner on activation */
++ if (activator) {
++ kdbus_conn_move_messages(owner->conn, activator->conn,
++ name->name_id);
++ kdbus_notify_name_change(bus, KDBUS_ITEM_NAME_CHANGE,
++ activator->conn->id, owner->conn->id,
++ activator->flags, owner->flags,
++ name->name);
++ activator->flags &= ~KDBUS_NAME_PRIMARY;
++ activator->flags |= KDBUS_NAME_IN_QUEUE;
++ } else {
++ kdbus_notify_name_change(bus, KDBUS_ITEM_NAME_ADD,
++ 0, owner->conn->id,
++ 0, owner->flags,
++ name->name);
+ }
+
-+ e = kdbus_name_entry_new(reg, hash, name);
-+ if (IS_ERR(e)) {
-+ ret = PTR_ERR(e);
-+ goto exit_unlock;
-+ }
++ } else if (owner == primary) {
++ /*
++ * Already the primary owner of the name, flags were already
++ * updated. Nothing to do.
++ */
+
-+ if (kdbus_conn_is_activator(conn)) {
-+ e->activator = kdbus_conn_ref(conn);
-+ conn->activator_of = e;
-+ }
++ owner->flags |= KDBUS_NAME_PRIMARY;
++
++ } else if ((primary->flags & KDBUS_NAME_ALLOW_REPLACEMENT) &&
++ (flags & KDBUS_NAME_REPLACE_EXISTING)) {
++ /*
++ * We're not the primary owner but can replace it. Move us
++ * ahead of the primary owner and acquire the name (possibly
++ * skipping queued owners ahead of us).
++ */
++
++ list_del_init(&owner->name_entry);
++ list_add(&owner->name_entry, &name->queue);
++ owner->flags |= KDBUS_NAME_PRIMARY;
++ nflags |= KDBUS_NAME_ACQUIRED;
+
-+ kdbus_name_entry_set_owner(e, conn, flags);
-+ kdbus_notify_name_change(e->conn->ep->bus, KDBUS_ITEM_NAME_ADD,
-+ 0, e->conn->id, 0, e->flags, e->name);
-+ } else if (e->conn == conn || e == conn->activator_of) {
-+ /* connection already owns that name */
-+ ret = -EALREADY;
-+ } else if (kdbus_conn_is_activator(conn)) {
-+ /* activator claims existing name */
-+
-+ if (conn->activator_of) {
-+ ret = -EINVAL; /* multiple names not allowed */
-+ } else if (e->activator) {
-+ ret = -EEXIST; /* only one activator per name */
++ kdbus_notify_name_change(bus, KDBUS_ITEM_NAME_CHANGE,
++ primary->conn->id, owner->conn->id,
++ primary->flags, owner->flags,
++ name->name);
++
++ /* requeue old primary, or drop if queueing not wanted */
++ if (primary->flags & KDBUS_NAME_QUEUE) {
++ primary->flags &= ~KDBUS_NAME_PRIMARY;
++ primary->flags |= KDBUS_NAME_IN_QUEUE;
+ } else {
-+ e->activator = kdbus_conn_ref(conn);
-+ conn->activator_of = e;
-+ }
-+ } else if (e->flags & KDBUS_NAME_ACTIVATOR) {
-+ /* claim name of an activator */
-+
-+ kdbus_conn_move_messages(conn, e->activator, 0);
-+ kdbus_name_entry_replace_owner(e, conn, flags);
-+ } else if ((flags & KDBUS_NAME_REPLACE_EXISTING) &&
-+ (e->flags & KDBUS_NAME_ALLOW_REPLACEMENT)) {
-+ /* claim name of a previous owner */
-+
-+ if (e->flags & KDBUS_NAME_QUEUE) {
-+ /* move owner back to queue if they asked for it */
-+ ret = kdbus_name_pending_new(e, e->conn, e->flags);
-+ if (ret < 0)
-+ goto exit_unlock;
++ list_del_init(&primary->name_entry);
++ kdbus_name_owner_free(primary);
+ }
+
-+ kdbus_name_entry_replace_owner(e, conn, flags);
+ } else if (flags & KDBUS_NAME_QUEUE) {
-+ /* add to waiting-queue of the name */
++ /*
++ * Name is already occupied and we cannot take it over, but
++ * queuing is allowed. Put us silently on the queue, if not
++ * already there.
++ */
+
-+ ret = kdbus_name_pending_new(e, conn, flags);
-+ if (ret >= 0)
-+ /* tell the caller that we queued it */
-+ rflags |= KDBUS_NAME_IN_QUEUE;
++ owner->flags |= KDBUS_NAME_IN_QUEUE;
++ if (!kdbus_name_owner_is_used(owner)) {
++ list_add_tail(&owner->name_entry, &name->queue);
++ nflags |= KDBUS_NAME_ACQUIRED;
++ }
++ } else if (kdbus_name_owner_is_used(owner)) {
++ /*
++ * Already queued on name, but re-queueing was not requested.
++ * Make sure to unlink it from the name, the caller is
++ * responsible for releasing it.
++ */
++
++ list_del_init(&owner->name_entry);
+ } else {
-+ /* the name is busy, return a failure */
++ /*
++ * Name is already claimed and queueing is not requested.
++ * Return error to the caller.
++ */
++
+ ret = -EEXIST;
+ }
+
-+ if (ret == 0 && return_flags)
-+ *return_flags = rflags;
++ if (return_flags)
++ *return_flags = owner->flags | nflags;
+
-+exit_unlock:
-+ up_write(®->rwlock);
-+ kdbus_notify_flush(conn->ep->bus);
+ return ret;
+}
+
-+static void kdbus_name_release_unlocked(struct kdbus_name_registry *reg,
-+ struct kdbus_name_entry *e)
++int kdbus_name_acquire(struct kdbus_name_registry *reg,
++ struct kdbus_conn *conn, const char *name_str,
++ u64 flags, u64 *return_flags)
+{
-+ struct kdbus_name_pending *p;
++ struct kdbus_name_entry *name = NULL;
++ struct kdbus_name_owner *owner = NULL;
++ u32 hash;
++ int ret;
++
++ kdbus_conn_assert_active(conn);
+
-+ lockdep_assert_held(®->rwlock);
++ down_write(®->rwlock);
+
-+ p = list_first_entry_or_null(&e->queue, struct kdbus_name_pending,
-+ name_entry);
++ /*
++ * Verify the connection has access to the name. Do this before testing
++ * for double-acquisitions and other errors to make sure we do not leak
++ * information about this name through possible custom endpoints.
++ */
++ if (!kdbus_conn_policy_own_name(conn, current_cred(), name_str)) {
++ ret = -EPERM;
++ goto exit;
++ }
+
-+ if (p) {
-+ /* give it to first active waiter in the queue */
-+ kdbus_name_entry_replace_owner(e, p->conn, p->flags);
-+ kdbus_name_pending_free(p);
-+ } else if (e->activator && e->activator != e->conn) {
-+ /* hand it back to an active activator connection */
-+ kdbus_conn_move_messages(e->activator, e->conn, e->name_id);
-+ kdbus_name_entry_replace_owner(e, e->activator,
-+ KDBUS_NAME_ACTIVATOR);
++ /*
++ * Lookup the name entry. If it already exists, search for an owner
++ * entry as we might already own that name. If either does not exist,
++ * we will allocate a fresh one.
++ */
++ hash = kdbus_strhash(name_str);
++ name = kdbus_name_entry_find(reg, hash, name_str);
++ if (name) {
++ owner = kdbus_name_owner_find(name, conn);
+ } else {
-+ /* release the name */
-+ kdbus_notify_name_change(e->conn->ep->bus,
-+ KDBUS_ITEM_NAME_REMOVE,
-+ e->conn->id, 0, e->flags, 0, e->name);
-+ kdbus_name_entry_remove_owner(e);
-+ kdbus_name_entry_free(e);
++ name = kdbus_name_entry_new(reg, hash, name_str);
++ if (IS_ERR(name)) {
++ ret = PTR_ERR(name);
++ name = NULL;
++ goto exit;
++ }
++ }
++
++ /* create name owner object if not already queued */
++ if (!owner) {
++ owner = kdbus_name_owner_new(conn, name, flags);
++ if (IS_ERR(owner)) {
++ ret = PTR_ERR(owner);
++ owner = NULL;
++ goto exit;
++ }
++ }
++
++ if (flags & KDBUS_NAME_ACTIVATOR)
++ ret = kdbus_name_become_activator(owner, return_flags);
++ else
++ ret = kdbus_name_update(owner, flags, return_flags);
++ if (ret < 0)
++ goto exit;
++
++exit:
++ if (owner && !kdbus_name_owner_is_used(owner))
++ kdbus_name_owner_free(owner);
++ if (name && !kdbus_name_entry_is_used(name))
++ kdbus_name_entry_free(name);
++ up_write(®->rwlock);
++ kdbus_notify_flush(conn->ep->bus);
++ return ret;
++}
++
++static void kdbus_name_release_unlocked(struct kdbus_name_owner *owner)
++{
++ struct kdbus_name_owner *primary, *next;
++ struct kdbus_name_entry *name;
++
++ name = owner->name;
++ primary = kdbus_name_entry_first(name);
++
++ list_del_init(&owner->name_entry);
++ if (owner == name->activator)
++ name->activator = NULL;
++
++ if (!primary || owner == primary) {
++ next = kdbus_name_entry_first(name);
++ if (!next)
++ next = name->activator;
++
++ if (next) {
++ /* hand to next in queue */
++ next->flags &= ~KDBUS_NAME_IN_QUEUE;
++ next->flags |= KDBUS_NAME_PRIMARY;
++ if (next == name->activator)
++ kdbus_conn_move_messages(next->conn,
++ owner->conn,
++ name->name_id);
++
++ kdbus_notify_name_change(owner->conn->ep->bus,
++ KDBUS_ITEM_NAME_CHANGE,
++ owner->conn->id, next->conn->id,
++ owner->flags, next->flags,
++ name->name);
++ } else {
++ kdbus_notify_name_change(owner->conn->ep->bus,
++ KDBUS_ITEM_NAME_REMOVE,
++ owner->conn->id, 0,
++ owner->flags, 0,
++ name->name);
++ }
+ }
++
++ kdbus_name_owner_free(owner);
++ if (!kdbus_name_entry_is_used(name))
++ kdbus_name_entry_free(name);
+}
+
+static int kdbus_name_release(struct kdbus_name_registry *reg,
+ struct kdbus_conn *conn,
-+ const char *name)
++ const char *name_str)
+{
-+ struct kdbus_name_pending *p;
-+ struct kdbus_name_entry *e;
++ struct kdbus_name_owner *owner;
++ struct kdbus_name_entry *name;
+ int ret = 0;
+
+ down_write(®->rwlock);
-+ e = kdbus_name_find(reg, kdbus_strhash(name), name);
-+ if (!e) {
-+ ret = -ESRCH;
-+ } else if (e->conn == conn) {
-+ kdbus_name_release_unlocked(reg, e);
++ name = kdbus_name_entry_find(reg, kdbus_strhash(name_str), name_str);
++ if (name) {
++ owner = kdbus_name_owner_find(name, conn);
++ if (owner)
++ kdbus_name_release_unlocked(owner);
++ else
++ ret = -EADDRINUSE;
+ } else {
-+ ret = -EADDRINUSE;
-+ list_for_each_entry(p, &e->queue, name_entry) {
-+ if (p->conn == conn) {
-+ kdbus_name_pending_free(p);
-+ ret = 0;
-+ break;
-+ }
-+ }
++ ret = -ESRCH;
+ }
+ up_write(®->rwlock);
+
@@ -17970,33 +18078,74 @@ index 0000000..057f806
+void kdbus_name_release_all(struct kdbus_name_registry *reg,
+ struct kdbus_conn *conn)
+{
-+ struct kdbus_name_pending *p;
-+ struct kdbus_conn *activator = NULL;
-+ struct kdbus_name_entry *e;
++ struct kdbus_name_owner *owner;
+
+ down_write(®->rwlock);
+
-+ if (conn->activator_of) {
-+ activator = conn->activator_of->activator;
-+ conn->activator_of->activator = NULL;
-+ }
-+
-+ while ((p = list_first_entry_or_null(&conn->names_queue_list,
-+ struct kdbus_name_pending,
-+ conn_entry)))
-+ kdbus_name_pending_free(p);
-+ while ((e = list_first_entry_or_null(&conn->names_list,
-+ struct kdbus_name_entry,
-+ conn_entry)))
-+ kdbus_name_release_unlocked(reg, e);
++ while ((owner = list_first_entry_or_null(&conn->names_list,
++ struct kdbus_name_owner,
++ conn_entry)))
++ kdbus_name_release_unlocked(owner);
+
+ up_write(®->rwlock);
+
-+ kdbus_conn_unref(activator);
+ kdbus_notify_flush(conn->ep->bus);
+}
+
+/**
++ * kdbus_name_is_valid() - check if a name is valid
++ * @p: The name to check
++ * @allow_wildcard: Whether or not to allow a wildcard name
++ *
++ * A name is valid if all of the following criterias are met:
++ *
++ * - The name has two or more elements separated by a period ('.') character.
++ * - All elements must contain at least one character.
++ * - Each element must only contain the ASCII characters "[A-Z][a-z][0-9]_-"
++ * and must not begin with a digit.
++ * - The name must not exceed KDBUS_NAME_MAX_LEN.
++ * - If @allow_wildcard is true, the name may end on '.*'
++ */
++bool kdbus_name_is_valid(const char *p, bool allow_wildcard)
++{
++ bool dot, found_dot = false;
++ const char *q;
++
++ for (dot = true, q = p; *q; q++) {
++ if (*q == '.') {
++ if (dot)
++ return false;
++
++ found_dot = true;
++ dot = true;
++ } else {
++ bool good;
++
++ good = isalpha(*q) || (!dot && isdigit(*q)) ||
++ *q == '_' || *q == '-' ||
++ (allow_wildcard && dot &&
++ *q == '*' && *(q + 1) == '\0');
++
++ if (!good)
++ return false;
++
++ dot = false;
++ }
++ }
++
++ if (q - p > KDBUS_NAME_MAX_LEN)
++ return false;
++
++ if (dot)
++ return false;
++
++ if (!found_dot)
++ return false;
++
++ return true;
++}
++
++/**
+ * kdbus_cmd_name_acquire() - handle KDBUS_CMD_NAME_ACQUIRE
+ * @conn: connection to operate on
+ * @argp: command payload
@@ -18035,20 +18184,9 @@ index 0000000..057f806
+ goto exit;
+ }
+
-+ /*
-+ * Do atomic_inc_return here to reserve our slot, then decrement
-+ * it before returning.
-+ */
-+ if (atomic_inc_return(&conn->name_count) > KDBUS_CONN_MAX_NAMES) {
-+ ret = -E2BIG;
-+ goto exit_dec;
-+ }
-+
+ ret = kdbus_name_acquire(conn->ep->bus->name_registry, conn, item_name,
+ cmd->flags, &cmd->return_flags);
+
-+exit_dec:
-+ atomic_dec(&conn->name_count);
+exit:
+ return kdbus_args_clear(&args, ret);
+}
@@ -18091,7 +18229,7 @@ index 0000000..057f806
+ struct kdbus_conn *c,
+ struct kdbus_pool_slice *slice,
+ size_t *pos,
-+ struct kdbus_name_entry *e,
++ struct kdbus_name_owner *o,
+ bool write)
+{
+ struct kvec kvec[4];
@@ -18112,22 +18250,22 @@ index 0000000..057f806
+ u64 flags;
+ } h = {};
+
-+ if (e && !kdbus_conn_policy_see_name_unlocked(conn, current_cred(),
-+ e->name))
++ if (o && !kdbus_conn_policy_see_name_unlocked(conn, current_cred(),
++ o->name->name))
+ return 0;
+
+ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &info.size);
+
+ /* append name */
-+ if (e) {
-+ size_t slen = strlen(e->name) + 1;
++ if (o) {
++ size_t slen = strlen(o->name->name) + 1;
+
+ h.size = offsetof(struct kdbus_item, name.name) + slen;
+ h.type = KDBUS_ITEM_OWNED_NAME;
-+ h.flags = e->flags;
++ h.flags = o->flags;
+
+ kdbus_kvec_set(&kvec[cnt++], &h, sizeof(h), &info.size);
-+ kdbus_kvec_set(&kvec[cnt++], e->name, slen, &info.size);
++ kdbus_kvec_set(&kvec[cnt++], o->name->name, slen, &info.size);
+ cnt += !!kdbus_kvec_pad(&kvec[cnt], &info.size);
+ }
+
@@ -18157,63 +18295,52 @@ index 0000000..057f806
+ if (kdbus_conn_is_monitor(c))
+ continue;
+
-+ /* skip activators */
-+ if (!(flags & KDBUS_LIST_ACTIVATORS) &&
-+ kdbus_conn_is_activator(c))
-+ continue;
-+
+ /* all names the connection owns */
-+ if (flags & (KDBUS_LIST_NAMES | KDBUS_LIST_ACTIVATORS)) {
-+ struct kdbus_name_entry *e;
++ if (flags & (KDBUS_LIST_NAMES |
++ KDBUS_LIST_ACTIVATORS |
++ KDBUS_LIST_QUEUED)) {
++ struct kdbus_name_owner *o;
+
-+ list_for_each_entry(e, &c->names_list, conn_entry) {
-+ struct kdbus_conn *a = e->activator;
++ list_for_each_entry(o, &c->names_list, conn_entry) {
++ if (o->flags & KDBUS_NAME_ACTIVATOR) {
++ if (!(flags & KDBUS_LIST_ACTIVATORS))
++ continue;
+
-+ if ((flags & KDBUS_LIST_ACTIVATORS) &&
-+ a && a != c) {
-+ ret = kdbus_list_write(conn, a, slice,
-+ &p, e, write);
++ ret = kdbus_list_write(conn, c, slice,
++ &p, o, write);
+ if (ret < 0) {
+ mutex_unlock(&c->lock);
+ return ret;
+ }
+
+ added = true;
-+ }
++ } else if (o->flags & KDBUS_NAME_IN_QUEUE) {
++ if (!(flags & KDBUS_LIST_QUEUED))
++ continue;
+
-+ if (flags & KDBUS_LIST_NAMES ||
-+ kdbus_conn_is_activator(c)) {
+ ret = kdbus_list_write(conn, c, slice,
-+ &p, e, write);
++ &p, o, write);
+ if (ret < 0) {
+ mutex_unlock(&c->lock);
+ return ret;
+ }
+
+ added = true;
-+ }
-+ }
-+ }
++ } else if (flags & KDBUS_LIST_NAMES) {
++ ret = kdbus_list_write(conn, c, slice,
++ &p, o, write);
++ if (ret < 0) {
++ mutex_unlock(&c->lock);
++ return ret;
++ }
+
-+ /* queue of names the connection is currently waiting for */
-+ if (flags & KDBUS_LIST_QUEUED) {
-+ struct kdbus_name_pending *q;
-+
-+ list_for_each_entry(q, &c->names_queue_list,
-+ conn_entry) {
-+ ret = kdbus_list_write(conn, c, slice, &p,
-+ q->name, write);
-+ if (ret < 0) {
-+ mutex_unlock(&c->lock);
-+ return ret;
++ added = true;
+ }
-+
-+ added = true;
+ }
+ }
+
+ /* nothing added so far, just add the unique ID */
-+ if (!added && flags & KDBUS_LIST_UNIQUE) {
++ if (!added && (flags & KDBUS_LIST_UNIQUE)) {
+ ret = kdbus_list_write(conn, c, slice, &p, NULL, write);
+ if (ret < 0)
+ return ret;
@@ -18302,10 +18429,10 @@ index 0000000..057f806
+}
diff --git a/ipc/kdbus/names.h b/ipc/kdbus/names.h
new file mode 100644
-index 0000000..3dd2589
+index 0000000..edac59d
--- /dev/null
+++ b/ipc/kdbus/names.h
-@@ -0,0 +1,74 @@
+@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -18326,6 +18453,10 @@ index 0000000..3dd2589
+#include <linux/hashtable.h>
+#include <linux/rwsem.h>
+
++struct kdbus_name_entry;
++struct kdbus_name_owner;
++struct kdbus_name_registry;
++
+/**
+ * struct kdbus_name_registry - names registered for a bus
+ * @entries_hash: Map of entries
@@ -18340,27 +18471,37 @@ index 0000000..3dd2589
+
+/**
+ * struct kdbus_name_entry - well-know name entry
-+ * @name_id: Sequence number of name entry to be able to uniquely
++ * @name_id: sequence number of name entry to be able to uniquely
+ * identify a name over its registration lifetime
-+ * @flags: KDBUS_NAME_* flags
-+ * @conn: Connection owning the name
-+ * @activator: Connection of the activator queuing incoming messages
-+ * @queue: List of queued connections
-+ * @conn_entry: Entry in connection
-+ * @hentry: Entry in registry map
-+ * @name: The well-known name
++ * @activator: activator of this name, or NULL
++ * @queue: list of queued owners
++ * @hentry: entry in registry map
++ * @name: well-known name
+ */
+struct kdbus_name_entry {
+ u64 name_id;
-+ u64 flags;
-+ struct kdbus_conn *conn;
-+ struct kdbus_conn *activator;
++ struct kdbus_name_owner *activator;
+ struct list_head queue;
-+ struct list_head conn_entry;
+ struct hlist_node hentry;
+ char name[];
+};
+
++/**
++ * struct kdbus_name_owner - owner of a well-known name
++ * @flags: KDBUS_NAME_* flags of this owner
++ * @conn: connection owning the name
++ * @name: name that is owned
++ * @conn_entry: link into @conn
++ * @name_entry: link into @name
++ */
++struct kdbus_name_owner {
++ u64 flags;
++ struct kdbus_conn *conn;
++ struct kdbus_name_entry *name;
++ struct list_head conn_entry;
++ struct list_head name_entry;
++};
++
+bool kdbus_name_is_valid(const char *p, bool allow_wildcard);
+
+struct kdbus_name_registry *kdbus_name_registry_new(void);
@@ -18379,6 +18520,23 @@ index 0000000..3dd2589
+int kdbus_cmd_name_release(struct kdbus_conn *conn, void __user *argp);
+int kdbus_cmd_list(struct kdbus_conn *conn, void __user *argp);
+
++/**
++ * kdbus_name_get_owner() - get current owner of a name
++ * @name: name to get current owner of
++ *
++ * This returns a pointer to the current owner of a name (or its activator if
++ * there is no owner). The caller must make sure @name is valid and does not
++ * vanish.
++ *
++ * Return: Pointer to current owner or NULL if there is none.
++ */
++static inline struct kdbus_name_owner *
++kdbus_name_get_owner(struct kdbus_name_entry *name)
++{
++ return list_first_entry_or_null(&name->queue, struct kdbus_name_owner,
++ name_entry) ? : name->activator;
++}
++
+#endif
diff --git a/ipc/kdbus/node.c b/ipc/kdbus/node.c
new file mode 100644
@@ -22164,10 +22322,10 @@ index 0000000..7f3abae
+#endif /* KDBUS_API_H */
diff --git a/samples/kdbus/kdbus-workers.c b/samples/kdbus/kdbus-workers.c
new file mode 100644
-index 0000000..c3ba958
+index 0000000..5a6dfdc
--- /dev/null
+++ b/samples/kdbus/kdbus-workers.c
-@@ -0,0 +1,1345 @@
+@@ -0,0 +1,1346 @@
+/*
+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
+ *
@@ -22229,9 +22387,11 @@ index 0000000..c3ba958
+
+#include <stdio.h>
+#include <stdlib.h>
++#include <sys/syscall.h>
+
+/* glibc < 2.7 does not ship sys/signalfd.h */
-+#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 7
++/* we require kernels with __NR_memfd_create */
++#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 7 && defined(__NR_memfd_create)
+
+#include <ctype.h>
+#include <errno.h>
@@ -22245,7 +22405,6 @@ index 0000000..c3ba958
+#include <sys/mman.h>
+#include <sys/poll.h>
+#include <sys/signalfd.h>
-+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <time.h>
@@ -23710,10 +23869,10 @@ index 0000000..ed28cca
+const char *enum_PAYLOAD(long long id);
diff --git a/tools/testing/selftests/kdbus/kdbus-test.c b/tools/testing/selftests/kdbus/kdbus-test.c
new file mode 100644
-index 0000000..db732e5
+index 0000000..db57381
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-test.c
-@@ -0,0 +1,899 @@
+@@ -0,0 +1,905 @@
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
@@ -23834,6 +23993,12 @@ index 0000000..db732e5
+ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
+ },
+ {
++ .name = "name-takeover",
++ .desc = "takeover of names",
++ .func = kdbus_test_name_takeover,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
+ .name = "message-basic",
+ .desc = "basic message handling",
+ .func = kdbus_test_message_basic,
@@ -24615,10 +24780,10 @@ index 0000000..db732e5
+}
diff --git a/tools/testing/selftests/kdbus/kdbus-test.h b/tools/testing/selftests/kdbus/kdbus-test.h
new file mode 100644
-index 0000000..a5c6ae8
+index 0000000..ee937f9
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-test.h
-@@ -0,0 +1,83 @@
+@@ -0,0 +1,84 @@
+#ifndef _TEST_KDBUS_H_
+#define _TEST_KDBUS_H_
+
@@ -24693,6 +24858,7 @@ index 0000000..a5c6ae8
+int kdbus_test_name_basic(struct kdbus_test_env *env);
+int kdbus_test_name_conflict(struct kdbus_test_env *env);
+int kdbus_test_name_queue(struct kdbus_test_env *env);
++int kdbus_test_name_takeover(struct kdbus_test_env *env);
+int kdbus_test_policy(struct kdbus_test_env *env);
+int kdbus_test_policy_ns(struct kdbus_test_env *env);
+int kdbus_test_policy_priv(struct kdbus_test_env *env);
@@ -24704,10 +24870,10 @@ index 0000000..a5c6ae8
+#endif /* _TEST_KDBUS_H_ */
diff --git a/tools/testing/selftests/kdbus/kdbus-util.c b/tools/testing/selftests/kdbus/kdbus-util.c
new file mode 100644
-index 0000000..a5e54ca
+index 0000000..82fa89b
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-util.c
-@@ -0,0 +1,1611 @@
+@@ -0,0 +1,1612 @@
+/*
+ * Copyright (C) 2013-2015 Daniel Mack
+ * Copyright (C) 2013-2015 Kay Sievers
@@ -25865,11 +26031,12 @@ index 0000000..a5e54ca
+ if (item->type == KDBUS_ITEM_OWNED_NAME) {
+ n = item->name.name;
+ flags = item->name.flags;
-+ }
+
-+ kdbus_printf("%8llu flags=0x%08llx conn=0x%08llx '%s'\n",
-+ name->id, (unsigned long long) flags,
-+ name->flags, n);
++ kdbus_printf("%8llu flags=0x%08llx conn=0x%08llx '%s'\n",
++ name->id,
++ (unsigned long long) flags,
++ name->flags, n);
++ }
+ }
+ kdbus_printf("\n");
+
@@ -27507,10 +27674,10 @@ index 0000000..762fb30
+}
diff --git a/tools/testing/selftests/kdbus/test-chat.c b/tools/testing/selftests/kdbus/test-chat.c
new file mode 100644
-index 0000000..71a92d8
+index 0000000..41e5b53
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-chat.c
-@@ -0,0 +1,122 @@
+@@ -0,0 +1,124 @@
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
@@ -27554,8 +27721,10 @@ index 0000000..71a92d8
+ ret = kdbus_name_acquire(conn_a, "foo.bar.double", NULL);
+ ASSERT_RETURN(ret == 0);
+
-+ ret = kdbus_name_acquire(conn_a, "foo.bar.double", NULL);
-+ ASSERT_RETURN(ret == -EALREADY);
++ flags = 0;
++ ret = kdbus_name_acquire(conn_a, "foo.bar.double", &flags);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(!(flags & KDBUS_NAME_ACQUIRED));
+
+ ret = kdbus_name_release(conn_a, "foo.bar.double");
+ ASSERT_RETURN(ret == 0);
@@ -29979,7 +30148,7 @@ index 0000000..2360dc1
+}
diff --git a/tools/testing/selftests/kdbus/test-message.c b/tools/testing/selftests/kdbus/test-message.c
new file mode 100644
-index 0000000..ddc1e0a
+index 0000000..563dc85
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-message.c
@@ -0,0 +1,734 @@
@@ -30060,7 +30229,7 @@ index 0000000..ddc1e0a
+
+ /* Faked replies with a valid reply cookie are rejected */
+ ret = kdbus_msg_send_reply(conn, time(NULL) ^ cookie, sender->id);
-+ ASSERT_RETURN(ret == -EPERM);
++ ASSERT_RETURN(ret == -EBADSLT);
+
+ ret = kdbus_free(conn, offset);
+ ASSERT_RETURN(ret == 0);
@@ -31407,10 +31576,10 @@ index 0000000..e00d738
+}
diff --git a/tools/testing/selftests/kdbus/test-names.c b/tools/testing/selftests/kdbus/test-names.c
new file mode 100644
-index 0000000..66ebb47
+index 0000000..e400dc8
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-names.c
-@@ -0,0 +1,194 @@
+@@ -0,0 +1,272 @@
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
@@ -31430,39 +31599,68 @@ index 0000000..66ebb47
+#include "kdbus-enum.h"
+#include "kdbus-test.h"
+
-+static int conn_is_name_owner(const struct kdbus_conn *conn,
-+ const char *needle)
++struct test_name {
++ const char *name;
++ __u64 owner_id;
++ __u64 flags;
++};
++
++static bool conn_test_names(const struct kdbus_conn *conn,
++ const struct test_name *tests,
++ unsigned int n_tests)
+{
-+ struct kdbus_cmd_list cmd_list = { .size = sizeof(cmd_list) };
++ struct kdbus_cmd_list cmd_list = {};
+ struct kdbus_info *name, *list;
-+ bool found = false;
++ unsigned int i;
+ int ret;
+
-+ cmd_list.flags = KDBUS_LIST_NAMES;
++ cmd_list.size = sizeof(cmd_list);
++ cmd_list.flags = KDBUS_LIST_NAMES |
++ KDBUS_LIST_ACTIVATORS |
++ KDBUS_LIST_QUEUED;
+
+ ret = kdbus_cmd_list(conn->fd, &cmd_list);
+ ASSERT_RETURN(ret == 0);
+
+ list = (struct kdbus_info *)(conn->buf + cmd_list.offset);
-+ KDBUS_FOREACH(name, list, cmd_list.list_size) {
-+ struct kdbus_item *item;
-+ const char *n = NULL;
+
-+ KDBUS_ITEM_FOREACH(item, name, items)
-+ if (item->type == KDBUS_ITEM_OWNED_NAME)
-+ n = item->name.name;
++ for (i = 0; i < n_tests; i++) {
++ const struct test_name *t = tests + i;
++ bool found = false;
+
-+ if (name->id == conn->id &&
-+ n && strcmp(needle, n) == 0) {
-+ found = true;
-+ break;
++ KDBUS_FOREACH(name, list, cmd_list.list_size) {
++ struct kdbus_item *item;
++
++ KDBUS_ITEM_FOREACH(item, name, items) {
++ if (item->type != KDBUS_ITEM_OWNED_NAME ||
++ strcmp(item->name.name, t->name) != 0)
++ continue;
++
++ if (t->owner_id == name->id &&
++ t->flags == item->name.flags) {
++ found = true;
++ break;
++ }
++ }
+ }
++
++ if (!found)
++ return false;
+ }
+
-+ ret = kdbus_free(conn, cmd_list.offset);
-+ ASSERT_RETURN(ret == 0);
++ return true;
++}
++
++static bool conn_is_name_primary_owner(const struct kdbus_conn *conn,
++ const char *needle)
++{
++ struct test_name t = {
++ .name = needle,
++ .owner_id = conn->id,
++ .flags = KDBUS_NAME_PRIMARY,
++ };
+
-+ return found ? 0 : -1;
++ return conn_test_names(conn, &t, 1);
+}
+
+int kdbus_test_name_basic(struct kdbus_test_env *env)
@@ -31498,15 +31696,15 @@ index 0000000..66ebb47
+ ret = kdbus_name_acquire(env->conn, name, NULL);
+ ASSERT_RETURN(ret == 0);
+
-+ ret = conn_is_name_owner(env->conn, name);
-+ ASSERT_RETURN(ret == 0);
++ ret = conn_is_name_primary_owner(env->conn, name);
++ ASSERT_RETURN(ret == true);
+
+ /* ... and release it again */
+ ret = kdbus_name_release(env->conn, name);
+ ASSERT_RETURN(ret == 0);
+
-+ ret = conn_is_name_owner(env->conn, name);
-+ ASSERT_RETURN(ret != 0);
++ ret = conn_is_name_primary_owner(env->conn, name);
++ ASSERT_RETURN(ret == false);
+
+ /* check that we can't release it again */
+ ret = kdbus_name_release(env->conn, name);
@@ -31548,12 +31746,8 @@ index 0000000..66ebb47
+ ret = kdbus_name_acquire(env->conn, name, NULL);
+ ASSERT_RETURN(ret == 0);
+
-+ ret = conn_is_name_owner(env->conn, name);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* check that we can't acquire it again from the 1st connection */
-+ ret = kdbus_name_acquire(env->conn, name, NULL);
-+ ASSERT_RETURN(ret == -EALREADY);
++ ret = conn_is_name_primary_owner(env->conn, name);
++ ASSERT_RETURN(ret == true);
+
+ /* check that we also can't acquire it again from the 2nd connection */
+ ret = kdbus_name_acquire(conn, name, NULL);
@@ -31567,13 +31761,14 @@ index 0000000..66ebb47
+int kdbus_test_name_queue(struct kdbus_test_env *env)
+{
+ struct kdbus_conn *conn;
++ struct test_name t[2];
+ const char *name;
+ uint64_t flags;
+ int ret;
+
+ name = "foo.bla.blaz";
+
-+ flags = KDBUS_NAME_ALLOW_REPLACEMENT;
++ flags = 0;
+
+ /* create a 2nd connection */
+ conn = kdbus_hello(env->buspath, 0, NULL, 0);
@@ -31584,8 +31779,8 @@ index 0000000..66ebb47
+ ret = kdbus_name_acquire(env->conn, name, &flags);
+ ASSERT_RETURN(ret == 0);
+
-+ ret = conn_is_name_owner(env->conn, name);
-+ ASSERT_RETURN(ret == 0);
++ ret = conn_is_name_primary_owner(env->conn, name);
++ ASSERT_RETURN(ret == true);
+
+ /* queue the 2nd connection as waiting owner */
+ flags = KDBUS_NAME_QUEUE;
@@ -31593,13 +31788,65 @@ index 0000000..66ebb47
+ ASSERT_RETURN(ret == 0);
+ ASSERT_RETURN(flags & KDBUS_NAME_IN_QUEUE);
+
++ t[0].name = name;
++ t[0].owner_id = env->conn->id;
++ t[0].flags = KDBUS_NAME_PRIMARY;
++ t[1].name = name;
++ t[1].owner_id = conn->id;
++ t[1].flags = KDBUS_NAME_QUEUE | KDBUS_NAME_IN_QUEUE;
++ ret = conn_test_names(conn, t, 2);
++ ASSERT_RETURN(ret == true);
++
+ /* release name from 1st connection */
+ ret = kdbus_name_release(env->conn, name);
+ ASSERT_RETURN(ret == 0);
+
+ /* now the name should be owned by the 2nd connection */
-+ ret = conn_is_name_owner(conn, name);
++ t[0].name = name;
++ t[0].owner_id = conn->id;
++ t[0].flags = KDBUS_NAME_PRIMARY | KDBUS_NAME_QUEUE;
++ ret = conn_test_names(conn, t, 1);
++ ASSERT_RETURN(ret == true);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
++
++int kdbus_test_name_takeover(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn;
++ struct test_name t;
++ const char *name;
++ uint64_t flags;
++ int ret;
++
++ name = "foo.bla.blaz";
++
++ flags = KDBUS_NAME_ALLOW_REPLACEMENT;
++
++ /* create a 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ /* acquire name for 1st connection */
++ ret = kdbus_name_acquire(env->conn, name, &flags);
++ ASSERT_RETURN(ret == 0);
++
++ t.name = name;
++ t.owner_id = env->conn->id;
++ t.flags = KDBUS_NAME_ALLOW_REPLACEMENT | KDBUS_NAME_PRIMARY;
++ ret = conn_test_names(conn, &t, 1);
++ ASSERT_RETURN(ret == true);
++
++ /* now steal name with 2nd connection */
++ flags = KDBUS_NAME_REPLACE_EXISTING;
++ ret = kdbus_name_acquire(conn, name, &flags);
+ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(flags & KDBUS_NAME_ACQUIRED);
++
++ ret = conn_is_name_primary_owner(conn, name);
++ ASSERT_RETURN(ret == true);
+
+ kdbus_conn_free(conn);
+
@@ -33622,7 +33869,7 @@ index 0000000..96d20d5
+}
diff --git a/tools/testing/selftests/kdbus/test-sync.c b/tools/testing/selftests/kdbus/test-sync.c
new file mode 100644
-index 0000000..e2be910
+index 0000000..0655a54
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-sync.c
@@ -0,0 +1,369 @@
@@ -33863,7 +34110,7 @@ index 0000000..e2be910
+
+ /* using an unknown cookie must fail */
+ ret = kdbus_msg_send_reply(conn_a, ~cookie, conn_b->id);
-+ if (ret != -EPERM) {
++ if (ret != -EBADSLT) {
+ status = TEST_ERR;
+ goto exit_thread;
+ }
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-08-10 23:42 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-08-10 23:42 UTC (permalink / raw
To: gentoo-commits
commit: 570e61538e27bd5acd3e23c3b24f1f2bd4b41e19
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Aug 10 23:42:16 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Aug 10 23:42:16 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=570e6153
Linux patch 4.1.5
0000_README | 4 +
1004_linux-4.1.5.patch | 5750 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 5754 insertions(+)
diff --git a/0000_README b/0000_README
index ceda226..148063b 100644
--- a/0000_README
+++ b/0000_README
@@ -59,6 +59,10 @@ Patch: 1003_linux-4.1.4.patch
From: http://www.kernel.org
Desc: Linux 4.1.4
+Patch: 1004_linux-4.1.5.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.5
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1004_linux-4.1.5.patch b/1004_linux-4.1.5.patch
new file mode 100644
index 0000000..ed56bc8
--- /dev/null
+++ b/1004_linux-4.1.5.patch
@@ -0,0 +1,5750 @@
+diff --git a/Documentation/hwmon/nct7904 b/Documentation/hwmon/nct7904
+index 014f112e2a14..57fffe33ebfc 100644
+--- a/Documentation/hwmon/nct7904
++++ b/Documentation/hwmon/nct7904
+@@ -35,11 +35,11 @@ temp1_input Local temperature (1/1000 degree,
+ temp[2-9]_input CPU temperatures (1/1000 degree,
+ 0.125 degree resolution)
+
+-fan[1-4]_mode R/W, 0/1 for manual or SmartFan mode
++pwm[1-4]_enable R/W, 1/2 for manual or SmartFan mode
+ Setting SmartFan mode is supported only if it has been
+ previously configured by BIOS (or configuration EEPROM)
+
+-fan[1-4]_pwm R/O in SmartFan mode, R/W in manual control mode
++pwm[1-4] R/O in SmartFan mode, R/W in manual control mode
+
+ The driver checks sensor control registers and does not export the sensors
+ that are not enabled. Anyway, a sensor that is enabled may actually be not
+diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
+index 74b6c6d97210..d2b1c40cb666 100644
+--- a/Documentation/kbuild/makefiles.txt
++++ b/Documentation/kbuild/makefiles.txt
+@@ -952,6 +952,14 @@ When kbuild executes, the following steps are followed (roughly):
+ $(KBUILD_ARFLAGS) set by the top level Makefile to "D" (deterministic
+ mode) if this option is supported by $(AR).
+
++ ARCH_CPPFLAGS, ARCH_AFLAGS, ARCH_CFLAGS Overrides the kbuild defaults
++
++ These variables are appended to the KBUILD_CPPFLAGS,
++ KBUILD_AFLAGS, and KBUILD_CFLAGS, respectively, after the
++ top-level Makefile has set any other flags. This provides a
++ means for an architecture to override the defaults.
++
++
+ --- 6.2 Add prerequisites to archheaders:
+
+ The archheaders: rule is used to generate header files that
+diff --git a/Makefile b/Makefile
+index 36f3225cdf1f..068dd690933d 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 4
++SUBLEVEL = 5
+ EXTRAVERSION =
+ NAME = Series 4800
+
+@@ -783,10 +783,11 @@ endif
+ include scripts/Makefile.kasan
+ include scripts/Makefile.extrawarn
+
+-# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
+-KBUILD_CPPFLAGS += $(KCPPFLAGS)
+-KBUILD_AFLAGS += $(KAFLAGS)
+-KBUILD_CFLAGS += $(KCFLAGS)
++# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
++# last assignments
++KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
++KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS)
++KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS)
+
+ # Use --build-id when available.
+ LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
+diff --git a/arch/arc/Makefile b/arch/arc/Makefile
+index db72fec0e160..2f21e1e0ecf7 100644
+--- a/arch/arc/Makefile
++++ b/arch/arc/Makefile
+@@ -43,7 +43,8 @@ endif
+
+ ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
+ # Generic build system uses -O2, we want -O3
+-cflags-y += -O3
++# Note: No need to add to cflags-y as that happens anyways
++ARCH_CFLAGS += -O3
+ endif
+
+ # small data is default for elf32 tool-chain. If not usable, disable it
+diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h
+index 624a9d048ca9..dae03e66fa9e 100644
+--- a/arch/arc/include/asm/bitops.h
++++ b/arch/arc/include/asm/bitops.h
+@@ -18,83 +18,49 @@
+ #include <linux/types.h>
+ #include <linux/compiler.h>
+ #include <asm/barrier.h>
++#ifndef CONFIG_ARC_HAS_LLSC
++#include <asm/smp.h>
++#endif
+
+-/*
+- * Hardware assisted read-modify-write using ARC700 LLOCK/SCOND insns.
+- * The Kconfig glue ensures that in SMP, this is only set if the container
+- * SoC/platform has cross-core coherent LLOCK/SCOND
+- */
+ #if defined(CONFIG_ARC_HAS_LLSC)
+
+-static inline void set_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned int temp;
+-
+- m += nr >> 5;
+-
+- /*
+- * ARC ISA micro-optimization:
+- *
+- * Instructions dealing with bitpos only consider lower 5 bits (0-31)
+- * e.g (x << 33) is handled like (x << 1) by ASL instruction
+- * (mem pointer still needs adjustment to point to next word)
+- *
+- * Hence the masking to clamp @nr arg can be elided in general.
+- *
+- * However if @nr is a constant (above assumed it in a register),
+- * and greater than 31, gcc can optimize away (x << 33) to 0,
+- * as overflow, given the 32-bit ISA. Thus masking needs to be done
+- * for constant @nr, but no code is generated due to const prop.
+- */
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- __asm__ __volatile__(
+- "1: llock %0, [%1] \n"
+- " bset %0, %0, %2 \n"
+- " scond %0, [%1] \n"
+- " bnz 1b \n"
+- : "=&r"(temp)
+- : "r"(m), "ir"(nr)
+- : "cc");
+-}
+-
+-static inline void clear_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned int temp;
+-
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- __asm__ __volatile__(
+- "1: llock %0, [%1] \n"
+- " bclr %0, %0, %2 \n"
+- " scond %0, [%1] \n"
+- " bnz 1b \n"
+- : "=&r"(temp)
+- : "r"(m), "ir"(nr)
+- : "cc");
+-}
+-
+-static inline void change_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned int temp;
+-
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
++/*
++ * Hardware assisted Atomic-R-M-W
++ */
+
+- __asm__ __volatile__(
+- "1: llock %0, [%1] \n"
+- " bxor %0, %0, %2 \n"
+- " scond %0, [%1] \n"
+- " bnz 1b \n"
+- : "=&r"(temp)
+- : "r"(m), "ir"(nr)
+- : "cc");
++#define BIT_OP(op, c_op, asm_op) \
++static inline void op##_bit(unsigned long nr, volatile unsigned long *m)\
++{ \
++ unsigned int temp; \
++ \
++ m += nr >> 5; \
++ \
++ /* \
++ * ARC ISA micro-optimization: \
++ * \
++ * Instructions dealing with bitpos only consider lower 5 bits \
++ * e.g (x << 33) is handled like (x << 1) by ASL instruction \
++ * (mem pointer still needs adjustment to point to next word) \
++ * \
++ * Hence the masking to clamp @nr arg can be elided in general. \
++ * \
++ * However if @nr is a constant (above assumed in a register), \
++ * and greater than 31, gcc can optimize away (x << 33) to 0, \
++ * as overflow, given the 32-bit ISA. Thus masking needs to be \
++ * done for const @nr, but no code is generated due to gcc \
++ * const prop. \
++ */ \
++ nr &= 0x1f; \
++ \
++ __asm__ __volatile__( \
++ "1: llock %0, [%1] \n" \
++ " " #asm_op " %0, %0, %2 \n" \
++ " scond %0, [%1] \n" \
++ " bnz 1b \n" \
++ : "=&r"(temp) /* Early clobber, to prevent reg reuse */ \
++ : "r"(m), /* Not "m": llock only supports reg direct addr mode */ \
++ "ir"(nr) \
++ : "cc"); \
+ }
+
+ /*
+@@ -108,91 +74,37 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *m)
+ * Since ARC lacks a equivalent h/w primitive, the bit is set unconditionally
+ * and the old value of bit is returned
+ */
+-static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long old, temp;
+-
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- /*
+- * Explicit full memory barrier needed before/after as
+- * LLOCK/SCOND themselves don't provide any such semantics
+- */
+- smp_mb();
+-
+- __asm__ __volatile__(
+- "1: llock %0, [%2] \n"
+- " bset %1, %0, %3 \n"
+- " scond %1, [%2] \n"
+- " bnz 1b \n"
+- : "=&r"(old), "=&r"(temp)
+- : "r"(m), "ir"(nr)
+- : "cc");
+-
+- smp_mb();
+-
+- return (old & (1 << nr)) != 0;
+-}
+-
+-static inline int
+-test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned int old, temp;
+-
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- smp_mb();
+-
+- __asm__ __volatile__(
+- "1: llock %0, [%2] \n"
+- " bclr %1, %0, %3 \n"
+- " scond %1, [%2] \n"
+- " bnz 1b \n"
+- : "=&r"(old), "=&r"(temp)
+- : "r"(m), "ir"(nr)
+- : "cc");
+-
+- smp_mb();
+-
+- return (old & (1 << nr)) != 0;
+-}
+-
+-static inline int
+-test_and_change_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned int old, temp;
+-
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- smp_mb();
+-
+- __asm__ __volatile__(
+- "1: llock %0, [%2] \n"
+- " bxor %1, %0, %3 \n"
+- " scond %1, [%2] \n"
+- " bnz 1b \n"
+- : "=&r"(old), "=&r"(temp)
+- : "r"(m), "ir"(nr)
+- : "cc");
+-
+- smp_mb();
+-
+- return (old & (1 << nr)) != 0;
++#define TEST_N_BIT_OP(op, c_op, asm_op) \
++static inline int test_and_##op##_bit(unsigned long nr, volatile unsigned long *m)\
++{ \
++ unsigned long old, temp; \
++ \
++ m += nr >> 5; \
++ \
++ nr &= 0x1f; \
++ \
++ /* \
++ * Explicit full memory barrier needed before/after as \
++ * LLOCK/SCOND themselves don't provide any such smenatic \
++ */ \
++ smp_mb(); \
++ \
++ __asm__ __volatile__( \
++ "1: llock %0, [%2] \n" \
++ " " #asm_op " %1, %0, %3 \n" \
++ " scond %1, [%2] \n" \
++ " bnz 1b \n" \
++ : "=&r"(old), "=&r"(temp) \
++ : "r"(m), "ir"(nr) \
++ : "cc"); \
++ \
++ smp_mb(); \
++ \
++ return (old & (1 << nr)) != 0; \
+ }
+
+ #else /* !CONFIG_ARC_HAS_LLSC */
+
+-#include <asm/smp.h>
+-
+ /*
+ * Non hardware assisted Atomic-R-M-W
+ * Locking would change to irq-disabling only (UP) and spinlocks (SMP)
+@@ -209,111 +121,37 @@ test_and_change_bit(unsigned long nr, volatile unsigned long *m)
+ * at compile time)
+ */
+
+-static inline void set_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long temp, flags;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- bitops_lock(flags);
+-
+- temp = *m;
+- *m = temp | (1UL << nr);
+-
+- bitops_unlock(flags);
++#define BIT_OP(op, c_op, asm_op) \
++static inline void op##_bit(unsigned long nr, volatile unsigned long *m)\
++{ \
++ unsigned long temp, flags; \
++ m += nr >> 5; \
++ \
++ /* \
++ * spin lock/unlock provide the needed smp_mb() before/after \
++ */ \
++ bitops_lock(flags); \
++ \
++ temp = *m; \
++ *m = temp c_op (1UL << (nr & 0x1f)); \
++ \
++ bitops_unlock(flags); \
+ }
+
+-static inline void clear_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long temp, flags;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- bitops_lock(flags);
+-
+- temp = *m;
+- *m = temp & ~(1UL << nr);
+-
+- bitops_unlock(flags);
+-}
+-
+-static inline void change_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long temp, flags;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- bitops_lock(flags);
+-
+- temp = *m;
+- *m = temp ^ (1UL << nr);
+-
+- bitops_unlock(flags);
+-}
+-
+-static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long old, flags;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- /*
+- * spin lock/unlock provide the needed smp_mb() before/after
+- */
+- bitops_lock(flags);
+-
+- old = *m;
+- *m = old | (1 << nr);
+-
+- bitops_unlock(flags);
+-
+- return (old & (1 << nr)) != 0;
+-}
+-
+-static inline int
+-test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long old, flags;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- bitops_lock(flags);
+-
+- old = *m;
+- *m = old & ~(1 << nr);
+-
+- bitops_unlock(flags);
+-
+- return (old & (1 << nr)) != 0;
+-}
+-
+-static inline int
+-test_and_change_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long old, flags;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- bitops_lock(flags);
+-
+- old = *m;
+- *m = old ^ (1 << nr);
+-
+- bitops_unlock(flags);
+-
+- return (old & (1 << nr)) != 0;
++#define TEST_N_BIT_OP(op, c_op, asm_op) \
++static inline int test_and_##op##_bit(unsigned long nr, volatile unsigned long *m)\
++{ \
++ unsigned long old, flags; \
++ m += nr >> 5; \
++ \
++ bitops_lock(flags); \
++ \
++ old = *m; \
++ *m = old c_op (1UL << (nr & 0x1f)); \
++ \
++ bitops_unlock(flags); \
++ \
++ return (old & (1UL << (nr & 0x1f))) != 0; \
+ }
+
+ #endif /* CONFIG_ARC_HAS_LLSC */
+@@ -322,86 +160,45 @@ test_and_change_bit(unsigned long nr, volatile unsigned long *m)
+ * Non atomic variants
+ **************************************/
+
+-static inline void __set_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long temp;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- temp = *m;
+- *m = temp | (1UL << nr);
++#define __BIT_OP(op, c_op, asm_op) \
++static inline void __##op##_bit(unsigned long nr, volatile unsigned long *m) \
++{ \
++ unsigned long temp; \
++ m += nr >> 5; \
++ \
++ temp = *m; \
++ *m = temp c_op (1UL << (nr & 0x1f)); \
+ }
+
+-static inline void __clear_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long temp;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- temp = *m;
+- *m = temp & ~(1UL << nr);
++#define __TEST_N_BIT_OP(op, c_op, asm_op) \
++static inline int __test_and_##op##_bit(unsigned long nr, volatile unsigned long *m)\
++{ \
++ unsigned long old; \
++ m += nr >> 5; \
++ \
++ old = *m; \
++ *m = old c_op (1UL << (nr & 0x1f)); \
++ \
++ return (old & (1UL << (nr & 0x1f))) != 0; \
+ }
+
+-static inline void __change_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long temp;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- temp = *m;
+- *m = temp ^ (1UL << nr);
+-}
+-
+-static inline int
+-__test_and_set_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long old;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- old = *m;
+- *m = old | (1 << nr);
+-
+- return (old & (1 << nr)) != 0;
+-}
+-
+-static inline int
+-__test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long old;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- old = *m;
+- *m = old & ~(1 << nr);
+-
+- return (old & (1 << nr)) != 0;
+-}
+-
+-static inline int
+-__test_and_change_bit(unsigned long nr, volatile unsigned long *m)
+-{
+- unsigned long old;
+- m += nr >> 5;
+-
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- old = *m;
+- *m = old ^ (1 << nr);
+-
+- return (old & (1 << nr)) != 0;
+-}
++#define BIT_OPS(op, c_op, asm_op) \
++ \
++ /* set_bit(), clear_bit(), change_bit() */ \
++ BIT_OP(op, c_op, asm_op) \
++ \
++ /* test_and_set_bit(), test_and_clear_bit(), test_and_change_bit() */\
++ TEST_N_BIT_OP(op, c_op, asm_op) \
++ \
++ /* __set_bit(), __clear_bit(), __change_bit() */ \
++ __BIT_OP(op, c_op, asm_op) \
++ \
++ /* __test_and_set_bit(), __test_and_clear_bit(), __test_and_change_bit() */\
++ __TEST_N_BIT_OP(op, c_op, asm_op)
++
++BIT_OPS(set, |, bset)
++BIT_OPS(clear, & ~, bclr)
++BIT_OPS(change, ^, bxor)
+
+ /*
+ * This routine doesn't need to be atomic.
+@@ -413,10 +210,7 @@ test_bit(unsigned int nr, const volatile unsigned long *addr)
+
+ addr += nr >> 5;
+
+- if (__builtin_constant_p(nr))
+- nr &= 0x1f;
+-
+- mask = 1 << nr;
++ mask = 1UL << (nr & 0x1f);
+
+ return ((mask & *addr) != 0);
+ }
+diff --git a/arch/arc/include/asm/ptrace.h b/arch/arc/include/asm/ptrace.h
+index 1bfeec2c0558..2a58af7a2e3a 100644
+--- a/arch/arc/include/asm/ptrace.h
++++ b/arch/arc/include/asm/ptrace.h
+@@ -63,7 +63,7 @@ struct callee_regs {
+ long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13;
+ };
+
+-#define instruction_pointer(regs) ((regs)->ret)
++#define instruction_pointer(regs) (unsigned long)((regs)->ret)
+ #define profile_pc(regs) instruction_pointer(regs)
+
+ /* return 1 if user mode or 0 if kernel mode */
+diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
+index 7128fad991ac..c9df40e5cd3b 100644
+--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
++++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
+@@ -544,6 +544,10 @@
+ phy-supply = <&ldousb_reg>;
+ };
+
++&usb2_phy2 {
++ phy-supply = <&ldousb_reg>;
++};
++
+ &usb1 {
+ dr_mode = "host";
+ pinctrl-names = "default";
+diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
+index aa465904f6cc..096f68be99e2 100644
+--- a/arch/arm/boot/dts/dra7-evm.dts
++++ b/arch/arm/boot/dts/dra7-evm.dts
+@@ -686,7 +686,8 @@
+
+ &dcan1 {
+ status = "ok";
+- pinctrl-names = "default", "sleep";
+- pinctrl-0 = <&dcan1_pins_default>;
++ pinctrl-names = "default", "sleep", "active";
++ pinctrl-0 = <&dcan1_pins_sleep>;
+ pinctrl-1 = <&dcan1_pins_sleep>;
++ pinctrl-2 = <&dcan1_pins_default>;
+ };
+diff --git a/arch/arm/boot/dts/dra72-evm.dts b/arch/arm/boot/dts/dra72-evm.dts
+index ce0390f081d9..6b05f6a0ba84 100644
+--- a/arch/arm/boot/dts/dra72-evm.dts
++++ b/arch/arm/boot/dts/dra72-evm.dts
+@@ -497,9 +497,10 @@
+
+ &dcan1 {
+ status = "ok";
+- pinctrl-names = "default", "sleep";
+- pinctrl-0 = <&dcan1_pins_default>;
++ pinctrl-names = "default", "sleep", "active";
++ pinctrl-0 = <&dcan1_pins_sleep>;
+ pinctrl-1 = <&dcan1_pins_sleep>;
++ pinctrl-2 = <&dcan1_pins_default>;
+ };
+
+ &qspi {
+diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
+index 6d0893a3828e..78b6fd0b86e6 100644
+--- a/arch/arm/mach-imx/gpc.c
++++ b/arch/arm/mach-imx/gpc.c
+@@ -291,8 +291,6 @@ void __init imx_gpc_check_dt(void)
+ }
+ }
+
+-#ifdef CONFIG_PM_GENERIC_DOMAINS
+-
+ static void _imx6q_pm_pu_power_off(struct generic_pm_domain *genpd)
+ {
+ int iso, iso2sw;
+@@ -399,7 +397,6 @@ static struct genpd_onecell_data imx_gpc_onecell_data = {
+ static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
+ {
+ struct clk *clk;
+- bool is_off;
+ int i;
+
+ imx6q_pu_domain.reg = pu_reg;
+@@ -416,18 +413,13 @@ static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
+ }
+ imx6q_pu_domain.num_clks = i;
+
+- is_off = IS_ENABLED(CONFIG_PM);
+- if (is_off) {
+- _imx6q_pm_pu_power_off(&imx6q_pu_domain.base);
+- } else {
+- /*
+- * Enable power if compiled without CONFIG_PM in case the
+- * bootloader disabled it.
+- */
+- imx6q_pm_pu_power_on(&imx6q_pu_domain.base);
+- }
++ /* Enable power always in case bootloader disabled it. */
++ imx6q_pm_pu_power_on(&imx6q_pu_domain.base);
++
++ if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS))
++ return 0;
+
+- pm_genpd_init(&imx6q_pu_domain.base, NULL, is_off);
++ pm_genpd_init(&imx6q_pu_domain.base, NULL, false);
+ return of_genpd_add_provider_onecell(dev->of_node,
+ &imx_gpc_onecell_data);
+
+@@ -437,13 +429,6 @@ clk_err:
+ return -EINVAL;
+ }
+
+-#else
+-static inline int imx_gpc_genpd_init(struct device *dev, struct regulator *reg)
+-{
+- return 0;
+-}
+-#endif /* CONFIG_PM_GENERIC_DOMAINS */
+-
+ static int imx_gpc_probe(struct platform_device *pdev)
+ {
+ struct regulator *pu_reg;
+diff --git a/arch/arm/mach-pxa/capc7117.c b/arch/arm/mach-pxa/capc7117.c
+index c092730749b9..bf366b39fa61 100644
+--- a/arch/arm/mach-pxa/capc7117.c
++++ b/arch/arm/mach-pxa/capc7117.c
+@@ -24,6 +24,7 @@
+ #include <linux/ata_platform.h>
+ #include <linux/serial_8250.h>
+ #include <linux/gpio.h>
++#include <linux/regulator/machine.h>
+
+ #include <asm/mach-types.h>
+ #include <asm/mach/arch.h>
+@@ -144,6 +145,8 @@ static void __init capc7117_init(void)
+
+ capc7117_uarts_init();
+ capc7117_ide_init();
++
++ regulator_has_full_constraints();
+ }
+
+ MACHINE_START(CAPC7117,
+diff --git a/arch/arm/mach-pxa/cm-x2xx.c b/arch/arm/mach-pxa/cm-x2xx.c
+index bb99f59a36d8..a17a91eb8e9a 100644
+--- a/arch/arm/mach-pxa/cm-x2xx.c
++++ b/arch/arm/mach-pxa/cm-x2xx.c
+@@ -13,6 +13,7 @@
+ #include <linux/syscore_ops.h>
+ #include <linux/irq.h>
+ #include <linux/gpio.h>
++#include <linux/regulator/machine.h>
+
+ #include <linux/dm9000.h>
+ #include <linux/leds.h>
+@@ -466,6 +467,8 @@ static void __init cmx2xx_init(void)
+ cmx2xx_init_ac97();
+ cmx2xx_init_touchscreen();
+ cmx2xx_init_leds();
++
++ regulator_has_full_constraints();
+ }
+
+ static void __init cmx2xx_init_irq(void)
+diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
+index 4d3588d26c2a..5851f4c254c1 100644
+--- a/arch/arm/mach-pxa/cm-x300.c
++++ b/arch/arm/mach-pxa/cm-x300.c
+@@ -835,6 +835,8 @@ static void __init cm_x300_init(void)
+ cm_x300_init_ac97();
+ cm_x300_init_wi2wi();
+ cm_x300_init_bl();
++
++ regulator_has_full_constraints();
+ }
+
+ static void __init cm_x300_fixup(struct tag *tags, char **cmdline)
+diff --git a/arch/arm/mach-pxa/colibri-pxa270.c b/arch/arm/mach-pxa/colibri-pxa270.c
+index 5f9d9303b346..3503826333c7 100644
+--- a/arch/arm/mach-pxa/colibri-pxa270.c
++++ b/arch/arm/mach-pxa/colibri-pxa270.c
+@@ -18,6 +18,7 @@
+ #include <linux/mtd/partitions.h>
+ #include <linux/mtd/physmap.h>
+ #include <linux/platform_device.h>
++#include <linux/regulator/machine.h>
+ #include <linux/ucb1400.h>
+
+ #include <asm/mach/arch.h>
+@@ -294,6 +295,8 @@ static void __init colibri_pxa270_init(void)
+ printk(KERN_ERR "Illegal colibri_pxa270_baseboard type %d\n",
+ colibri_pxa270_baseboard);
+ }
++
++ regulator_has_full_constraints();
+ }
+
+ /* The "Income s.r.o. SH-Dmaster PXA270 SBC" board can be booted either
+diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
+index 51531ecffca8..9d7072b04045 100644
+--- a/arch/arm/mach-pxa/em-x270.c
++++ b/arch/arm/mach-pxa/em-x270.c
+@@ -1306,6 +1306,8 @@ static void __init em_x270_init(void)
+ em_x270_init_i2c();
+ em_x270_init_camera();
+ em_x270_userspace_consumers_init();
++
++ regulator_has_full_constraints();
+ }
+
+ MACHINE_START(EM_X270, "Compulab EM-X270")
+diff --git a/arch/arm/mach-pxa/icontrol.c b/arch/arm/mach-pxa/icontrol.c
+index c98511c5abd1..9b0eb0252af6 100644
+--- a/arch/arm/mach-pxa/icontrol.c
++++ b/arch/arm/mach-pxa/icontrol.c
+@@ -26,6 +26,7 @@
+ #include <linux/spi/spi.h>
+ #include <linux/spi/pxa2xx_spi.h>
+ #include <linux/can/platform/mcp251x.h>
++#include <linux/regulator/machine.h>
+
+ #include "generic.h"
+
+@@ -185,6 +186,8 @@ static void __init icontrol_init(void)
+ mxm_8x10_mmc_init();
+
+ icontrol_can_init();
++
++ regulator_has_full_constraints();
+ }
+
+ MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
+diff --git a/arch/arm/mach-pxa/trizeps4.c b/arch/arm/mach-pxa/trizeps4.c
+index 872dcb20e757..066e3a250ee0 100644
+--- a/arch/arm/mach-pxa/trizeps4.c
++++ b/arch/arm/mach-pxa/trizeps4.c
+@@ -26,6 +26,7 @@
+ #include <linux/dm9000.h>
+ #include <linux/mtd/physmap.h>
+ #include <linux/mtd/partitions.h>
++#include <linux/regulator/machine.h>
+ #include <linux/i2c/pxa-i2c.h>
+
+ #include <asm/types.h>
+@@ -534,6 +535,8 @@ static void __init trizeps4_init(void)
+
+ BCR_writew(trizeps_conxs_bcr);
+ board_backlight_power(1);
++
++ regulator_has_full_constraints();
+ }
+
+ static void __init trizeps4_map_io(void)
+diff --git a/arch/arm/mach-pxa/vpac270.c b/arch/arm/mach-pxa/vpac270.c
+index aa89488f961e..54122a983ae3 100644
+--- a/arch/arm/mach-pxa/vpac270.c
++++ b/arch/arm/mach-pxa/vpac270.c
+@@ -24,6 +24,7 @@
+ #include <linux/dm9000.h>
+ #include <linux/ucb1400.h>
+ #include <linux/ata_platform.h>
++#include <linux/regulator/machine.h>
+ #include <linux/regulator/max1586.h>
+ #include <linux/i2c/pxa-i2c.h>
+
+@@ -711,6 +712,8 @@ static void __init vpac270_init(void)
+ vpac270_ts_init();
+ vpac270_rtc_init();
+ vpac270_ide_init();
++
++ regulator_has_full_constraints();
+ }
+
+ MACHINE_START(VPAC270, "Voipac PXA270")
+diff --git a/arch/arm/mach-pxa/zeus.c b/arch/arm/mach-pxa/zeus.c
+index ac2ae5c71ab4..6158566fa0f7 100644
+--- a/arch/arm/mach-pxa/zeus.c
++++ b/arch/arm/mach-pxa/zeus.c
+@@ -868,6 +868,8 @@ static void __init zeus_init(void)
+ i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
+ pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
+ spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
++
++ regulator_has_full_constraints();
+ }
+
+ static struct map_desc zeus_io_desc[] __initdata = {
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+index 7e7583ddd607..6e4b9ff22ef3 100644
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -1953,7 +1953,7 @@ static int extend_iommu_mapping(struct dma_iommu_mapping *mapping)
+ {
+ int next_bitmap;
+
+- if (mapping->nr_bitmaps > mapping->extensions)
++ if (mapping->nr_bitmaps >= mapping->extensions)
+ return -EINVAL;
+
+ next_bitmap = mapping->nr_bitmaps;
+diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
+index ab21e0d58278..352962bc2e78 100644
+--- a/arch/arm64/kernel/efi.c
++++ b/arch/arm64/kernel/efi.c
+@@ -122,12 +122,12 @@ static int __init uefi_init(void)
+
+ /* Show what we know for posterity */
+ c16 = early_memremap(efi_to_phys(efi.systab->fw_vendor),
+- sizeof(vendor));
++ sizeof(vendor) * sizeof(efi_char16_t));
+ if (c16) {
+ for (i = 0; i < (int) sizeof(vendor) - 1 && *c16; ++i)
+ vendor[i] = c16[i];
+ vendor[i] = '\0';
+- early_memunmap(c16, sizeof(vendor));
++ early_memunmap(c16, sizeof(vendor) * sizeof(efi_char16_t));
+ }
+
+ pr_info("EFI v%u.%.02u by %s\n",
+diff --git a/arch/avr32/mach-at32ap/clock.c b/arch/avr32/mach-at32ap/clock.c
+index 23b1a97fae7a..52c179bec0cc 100644
+--- a/arch/avr32/mach-at32ap/clock.c
++++ b/arch/avr32/mach-at32ap/clock.c
+@@ -80,6 +80,9 @@ int clk_enable(struct clk *clk)
+ {
+ unsigned long flags;
+
++ if (!clk)
++ return 0;
++
+ spin_lock_irqsave(&clk_lock, flags);
+ __clk_enable(clk);
+ spin_unlock_irqrestore(&clk_lock, flags);
+@@ -106,6 +109,9 @@ void clk_disable(struct clk *clk)
+ {
+ unsigned long flags;
+
++ if (IS_ERR_OR_NULL(clk))
++ return;
++
+ spin_lock_irqsave(&clk_lock, flags);
+ __clk_disable(clk);
+ spin_unlock_irqrestore(&clk_lock, flags);
+@@ -117,6 +123,9 @@ unsigned long clk_get_rate(struct clk *clk)
+ unsigned long flags;
+ unsigned long rate;
+
++ if (!clk)
++ return 0;
++
+ spin_lock_irqsave(&clk_lock, flags);
+ rate = clk->get_rate(clk);
+ spin_unlock_irqrestore(&clk_lock, flags);
+@@ -129,6 +138,9 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
+ {
+ unsigned long flags, actual_rate;
+
++ if (!clk)
++ return 0;
++
+ if (!clk->set_rate)
+ return -ENOSYS;
+
+@@ -145,6 +157,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
+ unsigned long flags;
+ long ret;
+
++ if (!clk)
++ return 0;
++
+ if (!clk->set_rate)
+ return -ENOSYS;
+
+@@ -161,6 +176,9 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
+ unsigned long flags;
+ int ret;
+
++ if (!clk)
++ return 0;
++
+ if (!clk->set_parent)
+ return -ENOSYS;
+
+@@ -174,7 +192,7 @@ EXPORT_SYMBOL(clk_set_parent);
+
+ struct clk *clk_get_parent(struct clk *clk)
+ {
+- return clk->parent;
++ return !clk ? NULL : clk->parent;
+ }
+ EXPORT_SYMBOL(clk_get_parent);
+
+diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
+index f5016656494f..a3b1ffe50aa0 100644
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -1417,6 +1417,7 @@ config CPU_MIPS64_R6
+ select CPU_SUPPORTS_HIGHMEM
+ select CPU_SUPPORTS_MSA
+ select GENERIC_CSUM
++ select MIPS_O32_FP64_SUPPORT if MIPS32_O32
+ help
+ Choose this option to build a kernel for release 6 or later of the
+ MIPS64 architecture. New MIPS processors, starting with the Warrior
+diff --git a/arch/mips/include/asm/fpu.h b/arch/mips/include/asm/fpu.h
+index 084780b355aa..1b0625189835 100644
+--- a/arch/mips/include/asm/fpu.h
++++ b/arch/mips/include/asm/fpu.h
+@@ -74,7 +74,7 @@ static inline int __enable_fpu(enum fpu_mode mode)
+ goto fr_common;
+
+ case FPU_64BIT:
+-#if !(defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS32_R6) \
++#if !(defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) \
+ || defined(CONFIG_64BIT))
+ /* we only have a 32-bit FPU */
+ return SIGFPE;
+diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
+index 2b25d1ba1ea0..16f1ea9ab191 100644
+--- a/arch/mips/include/asm/smp.h
++++ b/arch/mips/include/asm/smp.h
+@@ -23,6 +23,7 @@
+ extern int smp_num_siblings;
+ extern cpumask_t cpu_sibling_map[];
+ extern cpumask_t cpu_core_map[];
++extern cpumask_t cpu_foreign_map;
+
+ #define raw_smp_processor_id() (current_thread_info()->cpu)
+
+diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
+index faa46ebd9dda..d0744cc77ea7 100644
+--- a/arch/mips/kernel/smp.c
++++ b/arch/mips/kernel/smp.c
+@@ -63,6 +63,13 @@ EXPORT_SYMBOL(cpu_sibling_map);
+ cpumask_t cpu_core_map[NR_CPUS] __read_mostly;
+ EXPORT_SYMBOL(cpu_core_map);
+
++/*
++ * A logcal cpu mask containing only one VPE per core to
++ * reduce the number of IPIs on large MT systems.
++ */
++cpumask_t cpu_foreign_map __read_mostly;
++EXPORT_SYMBOL(cpu_foreign_map);
++
+ /* representing cpus for which sibling maps can be computed */
+ static cpumask_t cpu_sibling_setup_map;
+
+@@ -103,6 +110,29 @@ static inline void set_cpu_core_map(int cpu)
+ }
+ }
+
++/*
++ * Calculate a new cpu_foreign_map mask whenever a
++ * new cpu appears or disappears.
++ */
++static inline void calculate_cpu_foreign_map(void)
++{
++ int i, k, core_present;
++ cpumask_t temp_foreign_map;
++
++ /* Re-calculate the mask */
++ for_each_online_cpu(i) {
++ core_present = 0;
++ for_each_cpu(k, &temp_foreign_map)
++ if (cpu_data[i].package == cpu_data[k].package &&
++ cpu_data[i].core == cpu_data[k].core)
++ core_present = 1;
++ if (!core_present)
++ cpumask_set_cpu(i, &temp_foreign_map);
++ }
++
++ cpumask_copy(&cpu_foreign_map, &temp_foreign_map);
++}
++
+ struct plat_smp_ops *mp_ops;
+ EXPORT_SYMBOL(mp_ops);
+
+@@ -146,6 +176,8 @@ asmlinkage void start_secondary(void)
+ set_cpu_sibling_map(cpu);
+ set_cpu_core_map(cpu);
+
++ calculate_cpu_foreign_map();
++
+ cpumask_set_cpu(cpu, &cpu_callin_map);
+
+ synchronise_count_slave(cpu);
+@@ -173,9 +205,18 @@ void __irq_entry smp_call_function_interrupt(void)
+ static void stop_this_cpu(void *dummy)
+ {
+ /*
+- * Remove this CPU:
++ * Remove this CPU. Be a bit slow here and
++ * set the bits for every online CPU so we don't miss
++ * any IPI whilst taking this VPE down.
+ */
++
++ cpumask_copy(&cpu_foreign_map, cpu_online_mask);
++
++ /* Make it visible to every other CPU */
++ smp_mb();
++
+ set_cpu_online(smp_processor_id(), false);
++ calculate_cpu_foreign_map();
+ local_irq_disable();
+ while (1);
+ }
+@@ -197,6 +238,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
+ mp_ops->prepare_cpus(max_cpus);
+ set_cpu_sibling_map(0);
+ set_cpu_core_map(0);
++ calculate_cpu_foreign_map();
+ #ifndef CONFIG_HOTPLUG_CPU
+ init_cpu_present(cpu_possible_mask);
+ #endif
+diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
+index 22b9b2cb9219..6983fcd48131 100644
+--- a/arch/mips/math-emu/cp1emu.c
++++ b/arch/mips/math-emu/cp1emu.c
+@@ -451,7 +451,7 @@ static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
+ /* Fall through */
+ case jr_op:
+ /* For R6, JR already emulated in jalr_op */
+- if (NO_R6EMU && insn.r_format.opcode == jr_op)
++ if (NO_R6EMU && insn.r_format.func == jr_op)
+ break;
+ *contpc = regs->regs[insn.r_format.rs];
+ return 1;
+diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
+index 2e03ab173591..dca0efc078c1 100644
+--- a/arch/mips/mm/c-r4k.c
++++ b/arch/mips/mm/c-r4k.c
+@@ -37,6 +37,7 @@
+ #include <asm/cacheflush.h> /* for run_uncached() */
+ #include <asm/traps.h>
+ #include <asm/dma-coherence.h>
++#include <asm/mips-cm.h>
+
+ /*
+ * Special Variant of smp_call_function for use by cache functions:
+@@ -51,9 +52,16 @@ static inline void r4k_on_each_cpu(void (*func) (void *info), void *info)
+ {
+ preempt_disable();
+
+-#ifndef CONFIG_MIPS_MT_SMP
+- smp_call_function(func, info, 1);
+-#endif
++ /*
++ * The Coherent Manager propagates address-based cache ops to other
++ * cores but not index-based ops. However, r4k_on_each_cpu is used
++ * in both cases so there is no easy way to tell what kind of op is
++ * executed to the other cores. The best we can probably do is
++ * to restrict that call when a CM is not present because both
++ * CM-based SMP protocols (CMP & CPS) restrict index-based cache ops.
++ */
++ if (!mips_cm_present())
++ smp_call_function_many(&cpu_foreign_map, func, info, 1);
+ func(info);
+ preempt_enable();
+ }
+diff --git a/arch/parisc/include/asm/pgalloc.h b/arch/parisc/include/asm/pgalloc.h
+index 3a08eae3318f..3edbb9fc91b4 100644
+--- a/arch/parisc/include/asm/pgalloc.h
++++ b/arch/parisc/include/asm/pgalloc.h
+@@ -72,7 +72,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+
+ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
+ {
+- if(pmd_flag(*pmd) & PxD_FLAG_ATTACHED)
++ if (pmd_flag(*pmd) & PxD_FLAG_ATTACHED) {
+ /*
+ * This is the permanent pmd attached to the pgd;
+ * cannot free it.
+@@ -81,6 +81,7 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
+ */
+ mm_inc_nr_pmds(mm);
+ return;
++ }
+ free_pages((unsigned long)pmd, PMD_ORDER);
+ }
+
+diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
+index 0a183756d6ec..f93c4a4e6580 100644
+--- a/arch/parisc/include/asm/pgtable.h
++++ b/arch/parisc/include/asm/pgtable.h
+@@ -16,7 +16,7 @@
+ #include <asm/processor.h>
+ #include <asm/cache.h>
+
+-extern spinlock_t pa_dbit_lock;
++extern spinlock_t pa_tlb_lock;
+
+ /*
+ * kern_addr_valid(ADDR) tests if ADDR is pointing to valid kernel
+@@ -33,6 +33,19 @@ extern spinlock_t pa_dbit_lock;
+ */
+ #define kern_addr_valid(addr) (1)
+
++/* Purge data and instruction TLB entries. Must be called holding
++ * the pa_tlb_lock. The TLB purge instructions are slow on SMP
++ * machines since the purge must be broadcast to all CPUs.
++ */
++
++static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
++{
++ mtsp(mm->context, 1);
++ pdtlb(addr);
++ if (unlikely(split_tlb))
++ pitlb(addr);
++}
++
+ /* Certain architectures need to do special things when PTEs
+ * within a page table are directly modified. Thus, the following
+ * hook is made available.
+@@ -42,15 +55,20 @@ extern spinlock_t pa_dbit_lock;
+ *(pteptr) = (pteval); \
+ } while(0)
+
+-extern void purge_tlb_entries(struct mm_struct *, unsigned long);
++#define pte_inserted(x) \
++ ((pte_val(x) & (_PAGE_PRESENT|_PAGE_ACCESSED)) \
++ == (_PAGE_PRESENT|_PAGE_ACCESSED))
+
+-#define set_pte_at(mm, addr, ptep, pteval) \
+- do { \
++#define set_pte_at(mm, addr, ptep, pteval) \
++ do { \
++ pte_t old_pte; \
+ unsigned long flags; \
+- spin_lock_irqsave(&pa_dbit_lock, flags); \
+- set_pte(ptep, pteval); \
+- purge_tlb_entries(mm, addr); \
+- spin_unlock_irqrestore(&pa_dbit_lock, flags); \
++ spin_lock_irqsave(&pa_tlb_lock, flags); \
++ old_pte = *ptep; \
++ set_pte(ptep, pteval); \
++ if (pte_inserted(old_pte)) \
++ purge_tlb_entries(mm, addr); \
++ spin_unlock_irqrestore(&pa_tlb_lock, flags); \
+ } while (0)
+
+ #endif /* !__ASSEMBLY__ */
+@@ -268,7 +286,7 @@ extern unsigned long *empty_zero_page;
+
+ #define pte_none(x) (pte_val(x) == 0)
+ #define pte_present(x) (pte_val(x) & _PAGE_PRESENT)
+-#define pte_clear(mm,addr,xp) do { pte_val(*(xp)) = 0; } while (0)
++#define pte_clear(mm, addr, xp) set_pte_at(mm, addr, xp, __pte(0))
+
+ #define pmd_flag(x) (pmd_val(x) & PxD_FLAG_MASK)
+ #define pmd_address(x) ((unsigned long)(pmd_val(x) &~ PxD_FLAG_MASK) << PxD_VALUE_SHIFT)
+@@ -435,15 +453,15 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned
+ if (!pte_young(*ptep))
+ return 0;
+
+- spin_lock_irqsave(&pa_dbit_lock, flags);
++ spin_lock_irqsave(&pa_tlb_lock, flags);
+ pte = *ptep;
+ if (!pte_young(pte)) {
+- spin_unlock_irqrestore(&pa_dbit_lock, flags);
++ spin_unlock_irqrestore(&pa_tlb_lock, flags);
+ return 0;
+ }
+ set_pte(ptep, pte_mkold(pte));
+ purge_tlb_entries(vma->vm_mm, addr);
+- spin_unlock_irqrestore(&pa_dbit_lock, flags);
++ spin_unlock_irqrestore(&pa_tlb_lock, flags);
+ return 1;
+ }
+
+@@ -453,11 +471,12 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
+ pte_t old_pte;
+ unsigned long flags;
+
+- spin_lock_irqsave(&pa_dbit_lock, flags);
++ spin_lock_irqsave(&pa_tlb_lock, flags);
+ old_pte = *ptep;
+- pte_clear(mm,addr,ptep);
+- purge_tlb_entries(mm, addr);
+- spin_unlock_irqrestore(&pa_dbit_lock, flags);
++ set_pte(ptep, __pte(0));
++ if (pte_inserted(old_pte))
++ purge_tlb_entries(mm, addr);
++ spin_unlock_irqrestore(&pa_tlb_lock, flags);
+
+ return old_pte;
+ }
+@@ -465,10 +484,10 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
+ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+ {
+ unsigned long flags;
+- spin_lock_irqsave(&pa_dbit_lock, flags);
++ spin_lock_irqsave(&pa_tlb_lock, flags);
+ set_pte(ptep, pte_wrprotect(*ptep));
+ purge_tlb_entries(mm, addr);
+- spin_unlock_irqrestore(&pa_dbit_lock, flags);
++ spin_unlock_irqrestore(&pa_tlb_lock, flags);
+ }
+
+ #define pte_same(A,B) (pte_val(A) == pte_val(B))
+diff --git a/arch/parisc/include/asm/tlbflush.h b/arch/parisc/include/asm/tlbflush.h
+index 9d086a599fa0..e84b96478193 100644
+--- a/arch/parisc/include/asm/tlbflush.h
++++ b/arch/parisc/include/asm/tlbflush.h
+@@ -13,6 +13,9 @@
+ * active at any one time on the Merced bus. This tlb purge
+ * synchronisation is fairly lightweight and harmless so we activate
+ * it on all systems not just the N class.
++
++ * It is also used to ensure PTE updates are atomic and consistent
++ * with the TLB.
+ */
+ extern spinlock_t pa_tlb_lock;
+
+@@ -24,20 +27,24 @@ extern void flush_tlb_all_local(void *);
+
+ #define smp_flush_tlb_all() flush_tlb_all()
+
++int __flush_tlb_range(unsigned long sid,
++ unsigned long start, unsigned long end);
++
++#define flush_tlb_range(vma, start, end) \
++ __flush_tlb_range((vma)->vm_mm->context, start, end)
++
++#define flush_tlb_kernel_range(start, end) \
++ __flush_tlb_range(0, start, end)
++
+ /*
+ * flush_tlb_mm()
+ *
+- * XXX This code is NOT valid for HP-UX compatibility processes,
+- * (although it will probably work 99% of the time). HP-UX
+- * processes are free to play with the space id's and save them
+- * over long periods of time, etc. so we have to preserve the
+- * space and just flush the entire tlb. We need to check the
+- * personality in order to do that, but the personality is not
+- * currently being set correctly.
+- *
+- * Of course, Linux processes could do the same thing, but
+- * we don't support that (and the compilers, dynamic linker,
+- * etc. do not do that).
++ * The code to switch to a new context is NOT valid for processes
++ * which play with the space id's. Thus, we have to preserve the
++ * space and just flush the entire tlb. However, the compilers,
++ * dynamic linker, etc, do not manipulate space id's, so there
++ * could be a significant performance benefit in switching contexts
++ * and not flushing the whole tlb.
+ */
+
+ static inline void flush_tlb_mm(struct mm_struct *mm)
+@@ -45,10 +52,18 @@ static inline void flush_tlb_mm(struct mm_struct *mm)
+ BUG_ON(mm == &init_mm); /* Should never happen */
+
+ #if 1 || defined(CONFIG_SMP)
++ /* Except for very small threads, flushing the whole TLB is
++ * faster than using __flush_tlb_range. The pdtlb and pitlb
++ * instructions are very slow because of the TLB broadcast.
++ * It might be faster to do local range flushes on all CPUs
++ * on PA 2.0 systems.
++ */
+ flush_tlb_all();
+ #else
+ /* FIXME: currently broken, causing space id and protection ids
+- * to go out of sync, resulting in faults on userspace accesses.
++ * to go out of sync, resulting in faults on userspace accesses.
++ * This approach needs further investigation since running many
++ * small applications (e.g., GCC testsuite) is faster on HP-UX.
+ */
+ if (mm) {
+ if (mm->context != 0)
+@@ -65,22 +80,12 @@ static inline void flush_tlb_page(struct vm_area_struct *vma,
+ {
+ unsigned long flags, sid;
+
+- /* For one page, it's not worth testing the split_tlb variable */
+-
+- mb();
+ sid = vma->vm_mm->context;
+ purge_tlb_start(flags);
+ mtsp(sid, 1);
+ pdtlb(addr);
+- pitlb(addr);
++ if (unlikely(split_tlb))
++ pitlb(addr);
+ purge_tlb_end(flags);
+ }
+-
+-void __flush_tlb_range(unsigned long sid,
+- unsigned long start, unsigned long end);
+-
+-#define flush_tlb_range(vma,start,end) __flush_tlb_range((vma)->vm_mm->context,start,end)
+-
+-#define flush_tlb_kernel_range(start, end) __flush_tlb_range(0,start,end)
+-
+ #endif
+diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
+index f6448c7c62b5..cda6dbbe9842 100644
+--- a/arch/parisc/kernel/cache.c
++++ b/arch/parisc/kernel/cache.c
+@@ -342,12 +342,15 @@ EXPORT_SYMBOL(flush_data_cache_local);
+ EXPORT_SYMBOL(flush_kernel_icache_range_asm);
+
+ #define FLUSH_THRESHOLD 0x80000 /* 0.5MB */
+-int parisc_cache_flush_threshold __read_mostly = FLUSH_THRESHOLD;
++static unsigned long parisc_cache_flush_threshold __read_mostly = FLUSH_THRESHOLD;
++
++#define FLUSH_TLB_THRESHOLD (2*1024*1024) /* 2MB initial TLB threshold */
++static unsigned long parisc_tlb_flush_threshold __read_mostly = FLUSH_TLB_THRESHOLD;
+
+ void __init parisc_setup_cache_timing(void)
+ {
+ unsigned long rangetime, alltime;
+- unsigned long size;
++ unsigned long size, start;
+
+ alltime = mfctl(16);
+ flush_data_cache();
+@@ -364,14 +367,43 @@ void __init parisc_setup_cache_timing(void)
+ /* Racy, but if we see an intermediate value, it's ok too... */
+ parisc_cache_flush_threshold = size * alltime / rangetime;
+
+- parisc_cache_flush_threshold = (parisc_cache_flush_threshold + L1_CACHE_BYTES - 1) &~ (L1_CACHE_BYTES - 1);
++ parisc_cache_flush_threshold = L1_CACHE_ALIGN(parisc_cache_flush_threshold);
+ if (!parisc_cache_flush_threshold)
+ parisc_cache_flush_threshold = FLUSH_THRESHOLD;
+
+ if (parisc_cache_flush_threshold > cache_info.dc_size)
+ parisc_cache_flush_threshold = cache_info.dc_size;
+
+- printk(KERN_INFO "Setting cache flush threshold to %x (%d CPUs online)\n", parisc_cache_flush_threshold, num_online_cpus());
++ printk(KERN_INFO "Setting cache flush threshold to %lu kB\n",
++ parisc_cache_flush_threshold/1024);
++
++ /* calculate TLB flush threshold */
++
++ alltime = mfctl(16);
++ flush_tlb_all();
++ alltime = mfctl(16) - alltime;
++
++ size = PAGE_SIZE;
++ start = (unsigned long) _text;
++ rangetime = mfctl(16);
++ while (start < (unsigned long) _end) {
++ flush_tlb_kernel_range(start, start + PAGE_SIZE);
++ start += PAGE_SIZE;
++ size += PAGE_SIZE;
++ }
++ rangetime = mfctl(16) - rangetime;
++
++ printk(KERN_DEBUG "Whole TLB flush %lu cycles, flushing %lu bytes %lu cycles\n",
++ alltime, size, rangetime);
++
++ parisc_tlb_flush_threshold = size * alltime / rangetime;
++ parisc_tlb_flush_threshold *= num_online_cpus();
++ parisc_tlb_flush_threshold = PAGE_ALIGN(parisc_tlb_flush_threshold);
++ if (!parisc_tlb_flush_threshold)
++ parisc_tlb_flush_threshold = FLUSH_TLB_THRESHOLD;
++
++ printk(KERN_INFO "Setting TLB flush threshold to %lu kB\n",
++ parisc_tlb_flush_threshold/1024);
+ }
+
+ extern void purge_kernel_dcache_page_asm(unsigned long);
+@@ -403,48 +435,45 @@ void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
+ }
+ EXPORT_SYMBOL(copy_user_page);
+
+-void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
+-{
+- unsigned long flags;
+-
+- /* Note: purge_tlb_entries can be called at startup with
+- no context. */
+-
+- purge_tlb_start(flags);
+- mtsp(mm->context, 1);
+- pdtlb(addr);
+- pitlb(addr);
+- purge_tlb_end(flags);
+-}
+-EXPORT_SYMBOL(purge_tlb_entries);
+-
+-void __flush_tlb_range(unsigned long sid, unsigned long start,
+- unsigned long end)
++/* __flush_tlb_range()
++ *
++ * returns 1 if all TLBs were flushed.
++ */
++int __flush_tlb_range(unsigned long sid, unsigned long start,
++ unsigned long end)
+ {
+- unsigned long npages;
++ unsigned long flags, size;
+
+- npages = ((end - (start & PAGE_MASK)) + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+- if (npages >= 512) /* 2MB of space: arbitrary, should be tuned */
++ size = (end - start);
++ if (size >= parisc_tlb_flush_threshold) {
+ flush_tlb_all();
+- else {
+- unsigned long flags;
++ return 1;
++ }
+
++ /* Purge TLB entries for small ranges using the pdtlb and
++ pitlb instructions. These instructions execute locally
++ but cause a purge request to be broadcast to other TLBs. */
++ if (likely(!split_tlb)) {
++ while (start < end) {
++ purge_tlb_start(flags);
++ mtsp(sid, 1);
++ pdtlb(start);
++ purge_tlb_end(flags);
++ start += PAGE_SIZE;
++ }
++ return 0;
++ }
++
++ /* split TLB case */
++ while (start < end) {
+ purge_tlb_start(flags);
+ mtsp(sid, 1);
+- if (split_tlb) {
+- while (npages--) {
+- pdtlb(start);
+- pitlb(start);
+- start += PAGE_SIZE;
+- }
+- } else {
+- while (npages--) {
+- pdtlb(start);
+- start += PAGE_SIZE;
+- }
+- }
++ pdtlb(start);
++ pitlb(start);
+ purge_tlb_end(flags);
++ start += PAGE_SIZE;
+ }
++ return 0;
+ }
+
+ static void cacheflush_h_tmp_function(void *dummy)
+diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
+index 75819617f93b..c5ef4081b01d 100644
+--- a/arch/parisc/kernel/entry.S
++++ b/arch/parisc/kernel/entry.S
+@@ -45,7 +45,7 @@
+ .level 2.0
+ #endif
+
+- .import pa_dbit_lock,data
++ .import pa_tlb_lock,data
+
+ /* space_to_prot macro creates a prot id from a space id */
+
+@@ -420,8 +420,8 @@
+ SHLREG %r9,PxD_VALUE_SHIFT,\pmd
+ extru \va,31-PAGE_SHIFT,ASM_BITS_PER_PTE,\index
+ dep %r0,31,PAGE_SHIFT,\pmd /* clear offset */
+- shladd \index,BITS_PER_PTE_ENTRY,\pmd,\pmd
+- LDREG %r0(\pmd),\pte /* pmd is now pte */
++ shladd \index,BITS_PER_PTE_ENTRY,\pmd,\pmd /* pmd is now pte */
++ LDREG %r0(\pmd),\pte
+ bb,>=,n \pte,_PAGE_PRESENT_BIT,\fault
+ .endm
+
+@@ -453,57 +453,53 @@
+ L2_ptep \pgd,\pte,\index,\va,\fault
+ .endm
+
+- /* Acquire pa_dbit_lock lock. */
+- .macro dbit_lock spc,tmp,tmp1
++ /* Acquire pa_tlb_lock lock and recheck page is still present. */
++ .macro tlb_lock spc,ptp,pte,tmp,tmp1,fault
+ #ifdef CONFIG_SMP
+ cmpib,COND(=),n 0,\spc,2f
+- load32 PA(pa_dbit_lock),\tmp
++ load32 PA(pa_tlb_lock),\tmp
+ 1: LDCW 0(\tmp),\tmp1
+ cmpib,COND(=) 0,\tmp1,1b
+ nop
++ LDREG 0(\ptp),\pte
++ bb,<,n \pte,_PAGE_PRESENT_BIT,2f
++ b \fault
++ stw \spc,0(\tmp)
+ 2:
+ #endif
+ .endm
+
+- /* Release pa_dbit_lock lock without reloading lock address. */
+- .macro dbit_unlock0 spc,tmp
++ /* Release pa_tlb_lock lock without reloading lock address. */
++ .macro tlb_unlock0 spc,tmp
+ #ifdef CONFIG_SMP
+ or,COND(=) %r0,\spc,%r0
+ stw \spc,0(\tmp)
+ #endif
+ .endm
+
+- /* Release pa_dbit_lock lock. */
+- .macro dbit_unlock1 spc,tmp
++ /* Release pa_tlb_lock lock. */
++ .macro tlb_unlock1 spc,tmp
+ #ifdef CONFIG_SMP
+- load32 PA(pa_dbit_lock),\tmp
+- dbit_unlock0 \spc,\tmp
++ load32 PA(pa_tlb_lock),\tmp
++ tlb_unlock0 \spc,\tmp
+ #endif
+ .endm
+
+ /* Set the _PAGE_ACCESSED bit of the PTE. Be clever and
+ * don't needlessly dirty the cache line if it was already set */
+- .macro update_ptep spc,ptep,pte,tmp,tmp1
+-#ifdef CONFIG_SMP
+- or,COND(=) %r0,\spc,%r0
+- LDREG 0(\ptep),\pte
+-#endif
++ .macro update_accessed ptp,pte,tmp,tmp1
+ ldi _PAGE_ACCESSED,\tmp1
+ or \tmp1,\pte,\tmp
+ and,COND(<>) \tmp1,\pte,%r0
+- STREG \tmp,0(\ptep)
++ STREG \tmp,0(\ptp)
+ .endm
+
+ /* Set the dirty bit (and accessed bit). No need to be
+ * clever, this is only used from the dirty fault */
+- .macro update_dirty spc,ptep,pte,tmp
+-#ifdef CONFIG_SMP
+- or,COND(=) %r0,\spc,%r0
+- LDREG 0(\ptep),\pte
+-#endif
++ .macro update_dirty ptp,pte,tmp
+ ldi _PAGE_ACCESSED|_PAGE_DIRTY,\tmp
+ or \tmp,\pte,\pte
+- STREG \pte,0(\ptep)
++ STREG \pte,0(\ptp)
+ .endm
+
+ /* bitshift difference between a PFN (based on kernel's PAGE_SIZE)
+@@ -1148,14 +1144,14 @@ dtlb_miss_20w:
+
+ L3_ptep ptp,pte,t0,va,dtlb_check_alias_20w
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,dtlb_check_alias_20w
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+ idtlbt pte,prot
+- dbit_unlock1 spc,t0
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1174,14 +1170,14 @@ nadtlb_miss_20w:
+
+ L3_ptep ptp,pte,t0,va,nadtlb_check_alias_20w
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,nadtlb_check_alias_20w
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+ idtlbt pte,prot
+- dbit_unlock1 spc,t0
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1202,20 +1198,20 @@ dtlb_miss_11:
+
+ L2_ptep ptp,pte,t0,va,dtlb_check_alias_11
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,dtlb_check_alias_11
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb_11 spc,pte,prot
+
+- mfsp %sr1,t0 /* Save sr1 so we can use it in tlb inserts */
++ mfsp %sr1,t1 /* Save sr1 so we can use it in tlb inserts */
+ mtsp spc,%sr1
+
+ idtlba pte,(%sr1,va)
+ idtlbp prot,(%sr1,va)
+
+- mtsp t0, %sr1 /* Restore sr1 */
+- dbit_unlock1 spc,t0
++ mtsp t1, %sr1 /* Restore sr1 */
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1235,21 +1231,20 @@ nadtlb_miss_11:
+
+ L2_ptep ptp,pte,t0,va,nadtlb_check_alias_11
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,nadtlb_check_alias_11
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb_11 spc,pte,prot
+
+-
+- mfsp %sr1,t0 /* Save sr1 so we can use it in tlb inserts */
++ mfsp %sr1,t1 /* Save sr1 so we can use it in tlb inserts */
+ mtsp spc,%sr1
+
+ idtlba pte,(%sr1,va)
+ idtlbp prot,(%sr1,va)
+
+- mtsp t0, %sr1 /* Restore sr1 */
+- dbit_unlock1 spc,t0
++ mtsp t1, %sr1 /* Restore sr1 */
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1269,16 +1264,16 @@ dtlb_miss_20:
+
+ L2_ptep ptp,pte,t0,va,dtlb_check_alias_20
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,dtlb_check_alias_20
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+- f_extend pte,t0
++ f_extend pte,t1
+
+ idtlbt pte,prot
+- dbit_unlock1 spc,t0
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1297,16 +1292,16 @@ nadtlb_miss_20:
+
+ L2_ptep ptp,pte,t0,va,nadtlb_check_alias_20
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,nadtlb_check_alias_20
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+- f_extend pte,t0
++ f_extend pte,t1
+
+- idtlbt pte,prot
+- dbit_unlock1 spc,t0
++ idtlbt pte,prot
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1406,14 +1401,14 @@ itlb_miss_20w:
+
+ L3_ptep ptp,pte,t0,va,itlb_fault
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,itlb_fault
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+ iitlbt pte,prot
+- dbit_unlock1 spc,t0
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1430,14 +1425,14 @@ naitlb_miss_20w:
+
+ L3_ptep ptp,pte,t0,va,naitlb_check_alias_20w
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,naitlb_check_alias_20w
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+ iitlbt pte,prot
+- dbit_unlock1 spc,t0
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1458,20 +1453,20 @@ itlb_miss_11:
+
+ L2_ptep ptp,pte,t0,va,itlb_fault
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,itlb_fault
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb_11 spc,pte,prot
+
+- mfsp %sr1,t0 /* Save sr1 so we can use it in tlb inserts */
++ mfsp %sr1,t1 /* Save sr1 so we can use it in tlb inserts */
+ mtsp spc,%sr1
+
+ iitlba pte,(%sr1,va)
+ iitlbp prot,(%sr1,va)
+
+- mtsp t0, %sr1 /* Restore sr1 */
+- dbit_unlock1 spc,t0
++ mtsp t1, %sr1 /* Restore sr1 */
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1482,20 +1477,20 @@ naitlb_miss_11:
+
+ L2_ptep ptp,pte,t0,va,naitlb_check_alias_11
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,naitlb_check_alias_11
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb_11 spc,pte,prot
+
+- mfsp %sr1,t0 /* Save sr1 so we can use it in tlb inserts */
++ mfsp %sr1,t1 /* Save sr1 so we can use it in tlb inserts */
+ mtsp spc,%sr1
+
+ iitlba pte,(%sr1,va)
+ iitlbp prot,(%sr1,va)
+
+- mtsp t0, %sr1 /* Restore sr1 */
+- dbit_unlock1 spc,t0
++ mtsp t1, %sr1 /* Restore sr1 */
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1516,16 +1511,16 @@ itlb_miss_20:
+
+ L2_ptep ptp,pte,t0,va,itlb_fault
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,itlb_fault
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+- f_extend pte,t0
++ f_extend pte,t1
+
+ iitlbt pte,prot
+- dbit_unlock1 spc,t0
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1536,16 +1531,16 @@ naitlb_miss_20:
+
+ L2_ptep ptp,pte,t0,va,naitlb_check_alias_20
+
+- dbit_lock spc,t0,t1
+- update_ptep spc,ptp,pte,t0,t1
++ tlb_lock spc,ptp,pte,t0,t1,naitlb_check_alias_20
++ update_accessed ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+- f_extend pte,t0
++ f_extend pte,t1
+
+ iitlbt pte,prot
+- dbit_unlock1 spc,t0
+
++ tlb_unlock1 spc,t0
+ rfir
+ nop
+
+@@ -1568,14 +1563,14 @@ dbit_trap_20w:
+
+ L3_ptep ptp,pte,t0,va,dbit_fault
+
+- dbit_lock spc,t0,t1
+- update_dirty spc,ptp,pte,t1
++ tlb_lock spc,ptp,pte,t0,t1,dbit_fault
++ update_dirty ptp,pte,t1
+
+ make_insert_tlb spc,pte,prot
+
+ idtlbt pte,prot
+- dbit_unlock0 spc,t0
+
++ tlb_unlock0 spc,t0
+ rfir
+ nop
+ #else
+@@ -1588,8 +1583,8 @@ dbit_trap_11:
+
+ L2_ptep ptp,pte,t0,va,dbit_fault
+
+- dbit_lock spc,t0,t1
+- update_dirty spc,ptp,pte,t1
++ tlb_lock spc,ptp,pte,t0,t1,dbit_fault
++ update_dirty ptp,pte,t1
+
+ make_insert_tlb_11 spc,pte,prot
+
+@@ -1600,8 +1595,8 @@ dbit_trap_11:
+ idtlbp prot,(%sr1,va)
+
+ mtsp t1, %sr1 /* Restore sr1 */
+- dbit_unlock0 spc,t0
+
++ tlb_unlock0 spc,t0
+ rfir
+ nop
+
+@@ -1612,16 +1607,16 @@ dbit_trap_20:
+
+ L2_ptep ptp,pte,t0,va,dbit_fault
+
+- dbit_lock spc,t0,t1
+- update_dirty spc,ptp,pte,t1
++ tlb_lock spc,ptp,pte,t0,t1,dbit_fault
++ update_dirty ptp,pte,t1
+
+ make_insert_tlb spc,pte,prot
+
+ f_extend pte,t1
+
+- idtlbt pte,prot
+- dbit_unlock0 spc,t0
++ idtlbt pte,prot
+
++ tlb_unlock0 spc,t0
+ rfir
+ nop
+ #endif
+diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
+index 47ee620d15d2..7f67c4c96a7a 100644
+--- a/arch/parisc/kernel/traps.c
++++ b/arch/parisc/kernel/traps.c
+@@ -43,10 +43,6 @@
+
+ #include "../math-emu/math-emu.h" /* for handle_fpe() */
+
+-#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
+-DEFINE_SPINLOCK(pa_dbit_lock);
+-#endif
+-
+ static void parisc_show_stack(struct task_struct *task, unsigned long *sp,
+ struct pt_regs *regs);
+
+diff --git a/arch/powerpc/kernel/idle_power7.S b/arch/powerpc/kernel/idle_power7.S
+index ccde8f084ce4..112ccf497562 100644
+--- a/arch/powerpc/kernel/idle_power7.S
++++ b/arch/powerpc/kernel/idle_power7.S
+@@ -52,6 +52,22 @@
+ .text
+
+ /*
++ * Used by threads when the lock bit of core_idle_state is set.
++ * Threads will spin in HMT_LOW until the lock bit is cleared.
++ * r14 - pointer to core_idle_state
++ * r15 - used to load contents of core_idle_state
++ */
++
++core_idle_lock_held:
++ HMT_LOW
++3: lwz r15,0(r14)
++ andi. r15,r15,PNV_CORE_IDLE_LOCK_BIT
++ bne 3b
++ HMT_MEDIUM
++ lwarx r15,0,r14
++ blr
++
++/*
+ * Pass requested state in r3:
+ * r3 - PNV_THREAD_NAP/SLEEP/WINKLE
+ *
+@@ -150,6 +166,10 @@ power7_enter_nap_mode:
+ ld r14,PACA_CORE_IDLE_STATE_PTR(r13)
+ lwarx_loop1:
+ lwarx r15,0,r14
++
++ andi. r9,r15,PNV_CORE_IDLE_LOCK_BIT
++ bnel core_idle_lock_held
++
+ andc r15,r15,r7 /* Clear thread bit */
+
+ andi. r15,r15,PNV_CORE_IDLE_THREAD_BITS
+@@ -294,7 +314,7 @@ lwarx_loop2:
+ * workaround undo code or resyncing timebase or restoring context
+ * In either case loop until the lock bit is cleared.
+ */
+- bne core_idle_lock_held
++ bnel core_idle_lock_held
+
+ cmpwi cr2,r15,0
+ lbz r4,PACA_SUBCORE_SIBLING_MASK(r13)
+@@ -319,15 +339,6 @@ lwarx_loop2:
+ isync
+ b common_exit
+
+-core_idle_lock_held:
+- HMT_LOW
+-core_idle_lock_loop:
+- lwz r15,0(14)
+- andi. r9,r15,PNV_CORE_IDLE_LOCK_BIT
+- bne core_idle_lock_loop
+- HMT_MEDIUM
+- b lwarx_loop2
+-
+ first_thread_in_subcore:
+ /* First thread in subcore to wakeup */
+ ori r15,r15,PNV_CORE_IDLE_LOCK_BIT
+diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h
+index cfad7fca01d6..d7697ab802f6 100644
+--- a/arch/s390/include/asm/ctl_reg.h
++++ b/arch/s390/include/asm/ctl_reg.h
+@@ -57,7 +57,10 @@ union ctlreg0 {
+ unsigned long lap : 1; /* Low-address-protection control */
+ unsigned long : 4;
+ unsigned long edat : 1; /* Enhanced-DAT-enablement control */
+- unsigned long : 23;
++ unsigned long : 4;
++ unsigned long afp : 1; /* AFP-register control */
++ unsigned long vx : 1; /* Vector enablement control */
++ unsigned long : 17;
+ };
+ };
+
+diff --git a/arch/s390/kernel/cache.c b/arch/s390/kernel/cache.c
+index bff5e3b6d822..8ba32436effe 100644
+--- a/arch/s390/kernel/cache.c
++++ b/arch/s390/kernel/cache.c
+@@ -138,6 +138,8 @@ int init_cache_level(unsigned int cpu)
+ union cache_topology ct;
+ enum cache_type ctype;
+
++ if (!test_facility(34))
++ return -EOPNOTSUPP;
+ if (!this_cpu_ci)
+ return -EINVAL;
+ ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0);
+diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
+index 505c17c0ae1a..56b550893593 100644
+--- a/arch/s390/kernel/nmi.c
++++ b/arch/s390/kernel/nmi.c
+@@ -21,6 +21,7 @@
+ #include <asm/nmi.h>
+ #include <asm/crw.h>
+ #include <asm/switch_to.h>
++#include <asm/ctl_reg.h>
+
+ struct mcck_struct {
+ int kill_task;
+@@ -129,26 +130,30 @@ static int notrace s390_revalidate_registers(struct mci *mci)
+ } else
+ asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area));
+
+- asm volatile(
+- " ld 0,0(%0)\n"
+- " ld 1,8(%0)\n"
+- " ld 2,16(%0)\n"
+- " ld 3,24(%0)\n"
+- " ld 4,32(%0)\n"
+- " ld 5,40(%0)\n"
+- " ld 6,48(%0)\n"
+- " ld 7,56(%0)\n"
+- " ld 8,64(%0)\n"
+- " ld 9,72(%0)\n"
+- " ld 10,80(%0)\n"
+- " ld 11,88(%0)\n"
+- " ld 12,96(%0)\n"
+- " ld 13,104(%0)\n"
+- " ld 14,112(%0)\n"
+- " ld 15,120(%0)\n"
+- : : "a" (fpt_save_area));
+- /* Revalidate vector registers */
+- if (MACHINE_HAS_VX && current->thread.vxrs) {
++ if (!MACHINE_HAS_VX) {
++ /* Revalidate floating point registers */
++ asm volatile(
++ " ld 0,0(%0)\n"
++ " ld 1,8(%0)\n"
++ " ld 2,16(%0)\n"
++ " ld 3,24(%0)\n"
++ " ld 4,32(%0)\n"
++ " ld 5,40(%0)\n"
++ " ld 6,48(%0)\n"
++ " ld 7,56(%0)\n"
++ " ld 8,64(%0)\n"
++ " ld 9,72(%0)\n"
++ " ld 10,80(%0)\n"
++ " ld 11,88(%0)\n"
++ " ld 12,96(%0)\n"
++ " ld 13,104(%0)\n"
++ " ld 14,112(%0)\n"
++ " ld 15,120(%0)\n"
++ : : "a" (fpt_save_area));
++ } else {
++ /* Revalidate vector registers */
++ union ctlreg0 cr0;
++
+ if (!mci->vr) {
+ /*
+ * Vector registers can't be restored and therefore
+@@ -156,8 +161,12 @@ static int notrace s390_revalidate_registers(struct mci *mci)
+ */
+ kill_task = 1;
+ }
++ cr0.val = S390_lowcore.cregs_save_area[0];
++ cr0.afp = cr0.vx = 1;
++ __ctl_load(cr0.val, 0, 0);
+ restore_vx_regs((__vector128 *)
+- S390_lowcore.vector_save_area_addr);
++ &S390_lowcore.vector_save_area);
++ __ctl_load(S390_lowcore.cregs_save_area[0], 0, 0);
+ }
+ /* Revalidate access registers */
+ asm volatile(
+diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
+index dc5edc29b73a..8f587d871b9f 100644
+--- a/arch/s390/kernel/process.c
++++ b/arch/s390/kernel/process.c
+@@ -163,7 +163,7 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
+ asmlinkage void execve_tail(void)
+ {
+ current->thread.fp_regs.fpc = 0;
+- asm volatile("sfpc %0,%0" : : "d" (0));
++ asm volatile("sfpc %0" : : "d" (0));
+ }
+
+ /*
+diff --git a/arch/s390/kernel/sclp.S b/arch/s390/kernel/sclp.S
+index 43c3169ea49c..ada0c07fe1a8 100644
+--- a/arch/s390/kernel/sclp.S
++++ b/arch/s390/kernel/sclp.S
+@@ -270,6 +270,8 @@ ENTRY(_sclp_print_early)
+ jno .Lesa2
+ ahi %r15,-80
+ stmh %r6,%r15,96(%r15) # store upper register halves
++ basr %r13,0
++ lmh %r0,%r15,.Lzeroes-.(%r13) # clear upper register halves
+ .Lesa2:
+ lr %r10,%r2 # save string pointer
+ lhi %r2,0
+@@ -291,6 +293,8 @@ ENTRY(_sclp_print_early)
+ .Lesa3:
+ lm %r6,%r15,120(%r15) # restore registers
+ br %r14
++.Lzeroes:
++ .fill 64,4,0
+
+ .LwritedataS4:
+ .long 0x00760005 # SCLP command for write data
+diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
+index 9afb9d602f84..dc2d7aa56440 100644
+--- a/arch/s390/net/bpf_jit_comp.c
++++ b/arch/s390/net/bpf_jit_comp.c
+@@ -415,13 +415,13 @@ static void bpf_jit_prologue(struct bpf_jit *jit)
+ EMIT6_DISP_LH(0xe3000000, 0x0004, REG_SKB_DATA, REG_0,
+ BPF_REG_1, offsetof(struct sk_buff, data));
+ }
+- /* BPF compatibility: clear A (%b7) and X (%b8) registers */
+- if (REG_SEEN(BPF_REG_7))
+- /* lghi %b7,0 */
+- EMIT4_IMM(0xa7090000, BPF_REG_7, 0);
+- if (REG_SEEN(BPF_REG_8))
+- /* lghi %b8,0 */
+- EMIT4_IMM(0xa7090000, BPF_REG_8, 0);
++ /* BPF compatibility: clear A (%b0) and X (%b7) registers */
++ if (REG_SEEN(BPF_REG_A))
++ /* lghi %ba,0 */
++ EMIT4_IMM(0xa7090000, BPF_REG_A, 0);
++ if (REG_SEEN(BPF_REG_X))
++ /* lghi %bx,0 */
++ EMIT4_IMM(0xa7090000, BPF_REG_X, 0);
+ }
+
+ /*
+diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
+index d366675e4bf8..396b5c96e272 100644
+--- a/arch/tile/kernel/setup.c
++++ b/arch/tile/kernel/setup.c
+@@ -1139,7 +1139,7 @@ static void __init load_hv_initrd(void)
+
+ void __init free_initrd_mem(unsigned long begin, unsigned long end)
+ {
+- free_bootmem(__pa(begin), end - begin);
++ free_bootmem_late(__pa(begin), end - begin);
+ }
+
+ static int __init setup_initrd(char *str)
+diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
+index 48304b89b601..0cdc154a22b5 100644
+--- a/arch/x86/boot/compressed/eboot.c
++++ b/arch/x86/boot/compressed/eboot.c
+@@ -1193,6 +1193,10 @@ static efi_status_t setup_e820(struct boot_params *params,
+ unsigned int e820_type = 0;
+ unsigned long m = efi->efi_memmap;
+
++#ifdef CONFIG_X86_64
++ m |= (u64)efi->efi_memmap_hi << 32;
++#endif
++
+ d = (efi_memory_desc_t *)(m + (i * efi->efi_memdesc_size));
+ switch (d->type) {
+ case EFI_RESERVED_TYPE:
+diff --git a/arch/x86/include/asm/kasan.h b/arch/x86/include/asm/kasan.h
+index 8b22422fbad8..74a2a8dc9908 100644
+--- a/arch/x86/include/asm/kasan.h
++++ b/arch/x86/include/asm/kasan.h
+@@ -14,15 +14,11 @@
+
+ #ifndef __ASSEMBLY__
+
+-extern pte_t kasan_zero_pte[];
+-extern pte_t kasan_zero_pmd[];
+-extern pte_t kasan_zero_pud[];
+-
+ #ifdef CONFIG_KASAN
+-void __init kasan_map_early_shadow(pgd_t *pgd);
++void __init kasan_early_init(void);
+ void __init kasan_init(void);
+ #else
+-static inline void kasan_map_early_shadow(pgd_t *pgd) { }
++static inline void kasan_early_init(void) { }
+ static inline void kasan_init(void) { }
+ #endif
+
+diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
+index 883f6b933fa4..e997f70f80c4 100644
+--- a/arch/x86/include/asm/mmu_context.h
++++ b/arch/x86/include/asm/mmu_context.h
+@@ -23,7 +23,7 @@ extern struct static_key rdpmc_always_available;
+
+ static inline void load_mm_cr4(struct mm_struct *mm)
+ {
+- if (static_key_true(&rdpmc_always_available) ||
++ if (static_key_false(&rdpmc_always_available) ||
+ atomic_read(&mm->context.perf_rdpmc_allowed))
+ cr4_set_bits(X86_CR4_PCE);
+ else
+diff --git a/arch/x86/kernel/cpu/perf_event_intel_cqm.c b/arch/x86/kernel/cpu/perf_event_intel_cqm.c
+index e4d1b8b738fa..cb77b11bc414 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel_cqm.c
++++ b/arch/x86/kernel/cpu/perf_event_intel_cqm.c
+@@ -934,6 +934,14 @@ static u64 intel_cqm_event_count(struct perf_event *event)
+ return 0;
+
+ /*
++ * Getting up-to-date values requires an SMP IPI which is not
++ * possible if we're being called in interrupt context. Return
++ * the cached values instead.
++ */
++ if (unlikely(in_interrupt()))
++ goto out;
++
++ /*
+ * Notice that we don't perform the reading of an RMID
+ * atomically, because we can't hold a spin lock across the
+ * IPIs.
+diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
+index 5a4668136e98..f129a9af6357 100644
+--- a/arch/x86/kernel/head64.c
++++ b/arch/x86/kernel/head64.c
+@@ -161,11 +161,12 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data)
+ /* Kill off the identity-map trampoline */
+ reset_early_page_tables();
+
+- kasan_map_early_shadow(early_level4_pgt);
+-
+- /* clear bss before set_intr_gate with early_idt_handler */
+ clear_bss();
+
++ clear_page(init_level4_pgt);
++
++ kasan_early_init();
++
+ for (i = 0; i < NUM_EXCEPTION_VECTORS; i++)
+ set_intr_gate(i, early_idt_handler_array[i]);
+ load_idt((const struct desc_ptr *)&idt_descr);
+@@ -177,12 +178,9 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data)
+ */
+ load_ucode_bsp();
+
+- clear_page(init_level4_pgt);
+ /* set init_level4_pgt kernel high mapping*/
+ init_level4_pgt[511] = early_level4_pgt[511];
+
+- kasan_map_early_shadow(init_level4_pgt);
+-
+ x86_64_start_reservations(real_mode_data);
+ }
+
+diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
+index df7e78057ae0..7e5da2cbe59e 100644
+--- a/arch/x86/kernel/head_64.S
++++ b/arch/x86/kernel/head_64.S
+@@ -516,38 +516,9 @@ ENTRY(phys_base)
+ /* This must match the first entry in level2_kernel_pgt */
+ .quad 0x0000000000000000
+
+-#ifdef CONFIG_KASAN
+-#define FILL(VAL, COUNT) \
+- .rept (COUNT) ; \
+- .quad (VAL) ; \
+- .endr
+-
+-NEXT_PAGE(kasan_zero_pte)
+- FILL(kasan_zero_page - __START_KERNEL_map + _KERNPG_TABLE, 512)
+-NEXT_PAGE(kasan_zero_pmd)
+- FILL(kasan_zero_pte - __START_KERNEL_map + _KERNPG_TABLE, 512)
+-NEXT_PAGE(kasan_zero_pud)
+- FILL(kasan_zero_pmd - __START_KERNEL_map + _KERNPG_TABLE, 512)
+-
+-#undef FILL
+-#endif
+-
+-
+ #include "../../x86/xen/xen-head.S"
+
+ __PAGE_ALIGNED_BSS
+ NEXT_PAGE(empty_zero_page)
+ .skip PAGE_SIZE
+
+-#ifdef CONFIG_KASAN
+-/*
+- * This page used as early shadow. We don't use empty_zero_page
+- * at early stages, stack instrumentation could write some garbage
+- * to this page.
+- * Latter we reuse it as zero shadow for large ranges of memory
+- * that allowed to access, but not instrumented by kasan
+- * (vmalloc/vmemmap ...).
+- */
+-NEXT_PAGE(kasan_zero_page)
+- .skip PAGE_SIZE
+-#endif
+diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c
+index 4860906c6b9f..9a54dbe98064 100644
+--- a/arch/x86/mm/kasan_init_64.c
++++ b/arch/x86/mm/kasan_init_64.c
+@@ -11,7 +11,19 @@
+ extern pgd_t early_level4_pgt[PTRS_PER_PGD];
+ extern struct range pfn_mapped[E820_X_MAX];
+
+-extern unsigned char kasan_zero_page[PAGE_SIZE];
++static pud_t kasan_zero_pud[PTRS_PER_PUD] __page_aligned_bss;
++static pmd_t kasan_zero_pmd[PTRS_PER_PMD] __page_aligned_bss;
++static pte_t kasan_zero_pte[PTRS_PER_PTE] __page_aligned_bss;
++
++/*
++ * This page used as early shadow. We don't use empty_zero_page
++ * at early stages, stack instrumentation could write some garbage
++ * to this page.
++ * Latter we reuse it as zero shadow for large ranges of memory
++ * that allowed to access, but not instrumented by kasan
++ * (vmalloc/vmemmap ...).
++ */
++static unsigned char kasan_zero_page[PAGE_SIZE] __page_aligned_bss;
+
+ static int __init map_range(struct range *range)
+ {
+@@ -36,7 +48,7 @@ static void __init clear_pgds(unsigned long start,
+ pgd_clear(pgd_offset_k(start));
+ }
+
+-void __init kasan_map_early_shadow(pgd_t *pgd)
++static void __init kasan_map_early_shadow(pgd_t *pgd)
+ {
+ int i;
+ unsigned long start = KASAN_SHADOW_START;
+@@ -73,7 +85,7 @@ static int __init zero_pmd_populate(pud_t *pud, unsigned long addr,
+ while (IS_ALIGNED(addr, PMD_SIZE) && addr + PMD_SIZE <= end) {
+ WARN_ON(!pmd_none(*pmd));
+ set_pmd(pmd, __pmd(__pa_nodebug(kasan_zero_pte)
+- | __PAGE_KERNEL_RO));
++ | _KERNPG_TABLE));
+ addr += PMD_SIZE;
+ pmd = pmd_offset(pud, addr);
+ }
+@@ -99,7 +111,7 @@ static int __init zero_pud_populate(pgd_t *pgd, unsigned long addr,
+ while (IS_ALIGNED(addr, PUD_SIZE) && addr + PUD_SIZE <= end) {
+ WARN_ON(!pud_none(*pud));
+ set_pud(pud, __pud(__pa_nodebug(kasan_zero_pmd)
+- | __PAGE_KERNEL_RO));
++ | _KERNPG_TABLE));
+ addr += PUD_SIZE;
+ pud = pud_offset(pgd, addr);
+ }
+@@ -124,7 +136,7 @@ static int __init zero_pgd_populate(unsigned long addr, unsigned long end)
+ while (IS_ALIGNED(addr, PGDIR_SIZE) && addr + PGDIR_SIZE <= end) {
+ WARN_ON(!pgd_none(*pgd));
+ set_pgd(pgd, __pgd(__pa_nodebug(kasan_zero_pud)
+- | __PAGE_KERNEL_RO));
++ | _KERNPG_TABLE));
+ addr += PGDIR_SIZE;
+ pgd = pgd_offset_k(addr);
+ }
+@@ -166,6 +178,26 @@ static struct notifier_block kasan_die_notifier = {
+ };
+ #endif
+
++void __init kasan_early_init(void)
++{
++ int i;
++ pteval_t pte_val = __pa_nodebug(kasan_zero_page) | __PAGE_KERNEL;
++ pmdval_t pmd_val = __pa_nodebug(kasan_zero_pte) | _KERNPG_TABLE;
++ pudval_t pud_val = __pa_nodebug(kasan_zero_pmd) | _KERNPG_TABLE;
++
++ for (i = 0; i < PTRS_PER_PTE; i++)
++ kasan_zero_pte[i] = __pte(pte_val);
++
++ for (i = 0; i < PTRS_PER_PMD; i++)
++ kasan_zero_pmd[i] = __pmd(pmd_val);
++
++ for (i = 0; i < PTRS_PER_PUD; i++)
++ kasan_zero_pud[i] = __pud(pud_val);
++
++ kasan_map_early_shadow(early_level4_pgt);
++ kasan_map_early_shadow(init_level4_pgt);
++}
++
+ void __init kasan_init(void)
+ {
+ int i;
+@@ -176,6 +208,7 @@ void __init kasan_init(void)
+
+ memcpy(early_level4_pgt, init_level4_pgt, sizeof(early_level4_pgt));
+ load_cr3(early_level4_pgt);
++ __flush_tlb_all();
+
+ clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END);
+
+@@ -202,5 +235,6 @@ void __init kasan_init(void)
+ memset(kasan_zero_page, 0, PAGE_SIZE);
+
+ load_cr3(init_level4_pgt);
++ __flush_tlb_all();
+ init_task.kasan_depth = 0;
+ }
+diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
+index 3250f2371aea..90b924acd982 100644
+--- a/arch/x86/mm/tlb.c
++++ b/arch/x86/mm/tlb.c
+@@ -117,7 +117,7 @@ static void flush_tlb_func(void *info)
+ } else {
+ unsigned long addr;
+ unsigned long nr_pages =
+- f->flush_end - f->flush_start / PAGE_SIZE;
++ (f->flush_end - f->flush_start) / PAGE_SIZE;
+ addr = f->flush_start;
+ while (addr < f->flush_end) {
+ __flush_tlb_single(addr);
+diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
+index 02744df576d5..841ea05e1b02 100644
+--- a/arch/x86/platform/efi/efi.c
++++ b/arch/x86/platform/efi/efi.c
+@@ -946,6 +946,11 @@ u64 efi_mem_attributes(unsigned long phys_addr)
+
+ static int __init arch_parse_efi_cmdline(char *str)
+ {
++ if (!str) {
++ pr_warn("need at least one option\n");
++ return -EINVAL;
++ }
++
+ if (parse_option_str(str, "old_map"))
+ set_bit(EFI_OLD_MEMMAP, &efi.flags);
+ if (parse_option_str(str, "debug"))
+diff --git a/block/bio-integrity.c b/block/bio-integrity.c
+index 5cbd5d9ea61d..39ce74d10e2b 100644
+--- a/block/bio-integrity.c
++++ b/block/bio-integrity.c
+@@ -51,7 +51,7 @@ struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio,
+ unsigned long idx = BIO_POOL_NONE;
+ unsigned inline_vecs;
+
+- if (!bs) {
++ if (!bs || !bs->bio_integrity_pool) {
+ bip = kmalloc(sizeof(struct bio_integrity_payload) +
+ sizeof(struct bio_vec) * nr_vecs, gfp_mask);
+ inline_vecs = nr_vecs;
+@@ -104,7 +104,7 @@ void bio_integrity_free(struct bio *bio)
+ kfree(page_address(bip->bip_vec->bv_page) +
+ bip->bip_vec->bv_offset);
+
+- if (bs) {
++ if (bs && bs->bio_integrity_pool) {
+ if (bip->bip_slab != BIO_POOL_NONE)
+ bvec_free(bs->bvec_integrity_pool, bip->bip_vec,
+ bip->bip_slab);
+diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
+index 0ac817b750db..6817e28960b7 100644
+--- a/block/blk-cgroup.c
++++ b/block/blk-cgroup.c
+@@ -716,8 +716,12 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
+ return -EINVAL;
+
+ disk = get_gendisk(MKDEV(major, minor), &part);
+- if (!disk || part)
++ if (!disk)
+ return -EINVAL;
++ if (part) {
++ put_disk(disk);
++ return -EINVAL;
++ }
+
+ rcu_read_lock();
+ spin_lock_irq(disk->queue->queue_lock);
+diff --git a/block/blk-mq.c b/block/blk-mq.c
+index 594eea04266e..2dc1fd6c5bdb 100644
+--- a/block/blk-mq.c
++++ b/block/blk-mq.c
+@@ -1968,7 +1968,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
+ goto err_hctxs;
+
+ setup_timer(&q->timeout, blk_mq_rq_timer, (unsigned long) q);
+- blk_queue_rq_timeout(q, set->timeout ? set->timeout : 30000);
++ blk_queue_rq_timeout(q, set->timeout ? set->timeout : 30 * HZ);
+
+ q->nr_queues = nr_cpu_ids;
+ q->nr_hw_queues = set->nr_hw_queues;
+diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
+index 7ccc084bf1df..85aa76116a30 100644
+--- a/drivers/ata/libata-pmp.c
++++ b/drivers/ata/libata-pmp.c
+@@ -460,6 +460,13 @@ static void sata_pmp_quirks(struct ata_port *ap)
+ ATA_LFLAG_NO_SRST |
+ ATA_LFLAG_ASSUME_ATA;
+ }
++ } else if (vendor == 0x11ab && devid == 0x4140) {
++ /* Marvell 4140 quirks */
++ ata_for_each_link(link, ap, EDGE) {
++ /* port 4 is for SEMB device and it doesn't like SRST */
++ if (link->pmp == 4)
++ link->flags |= ATA_LFLAG_DISABLED;
++ }
+ }
+ }
+
+diff --git a/drivers/clk/st/clk-flexgen.c b/drivers/clk/st/clk-flexgen.c
+index bf12a25eb3a2..0f8db28353c5 100644
+--- a/drivers/clk/st/clk-flexgen.c
++++ b/drivers/clk/st/clk-flexgen.c
+@@ -303,6 +303,8 @@ void __init st_of_flexgen_setup(struct device_node *np)
+ if (!rlock)
+ goto err;
+
++ spin_lock_init(rlock);
++
+ for (i = 0; i < clk_data->clk_num; i++) {
+ struct clk *clk;
+ const char *clk_name;
+diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
+index a917c4c7eaa9..6ae068ab07c8 100644
+--- a/drivers/clk/st/clkgen-fsyn.c
++++ b/drivers/clk/st/clkgen-fsyn.c
+@@ -340,7 +340,7 @@ static const struct clkgen_quadfs_data st_fs660c32_C_407 = {
+ CLKGEN_FIELD(0x30c, 0xf, 20),
+ CLKGEN_FIELD(0x310, 0xf, 20) },
+ .lockstatus_present = true,
+- .lock_status = CLKGEN_FIELD(0x2A0, 0x1, 24),
++ .lock_status = CLKGEN_FIELD(0x2f0, 0x1, 24),
+ .powerup_polarity = 1,
+ .standby_polarity = 1,
+ .pll_ops = &st_quadfs_pll_c32_ops,
+diff --git a/drivers/clk/st/clkgen-mux.c b/drivers/clk/st/clkgen-mux.c
+index fdcff10f6d30..ef6514636bfc 100644
+--- a/drivers/clk/st/clkgen-mux.c
++++ b/drivers/clk/st/clkgen-mux.c
+@@ -582,7 +582,7 @@ static struct clkgen_mux_data stih416_a9_mux_data = {
+ };
+ static struct clkgen_mux_data stih407_a9_mux_data = {
+ .offset = 0x1a4,
+- .shift = 1,
++ .shift = 0,
+ .width = 2,
+ };
+
+diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
+index c45d274a75c8..6f9d27f9001c 100644
+--- a/drivers/cpufreq/intel_pstate.c
++++ b/drivers/cpufreq/intel_pstate.c
+@@ -678,6 +678,7 @@ static struct cpu_defaults knl_params = {
+ .get_max = core_get_max_pstate,
+ .get_min = core_get_min_pstate,
+ .get_turbo = knl_get_turbo_pstate,
++ .get_scaling = core_get_scaling,
+ .set = core_set_pstate,
+ },
+ };
+diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c
+index 46307098f8ba..0a70e46d5416 100644
+--- a/drivers/crypto/omap-des.c
++++ b/drivers/crypto/omap-des.c
+@@ -536,9 +536,6 @@ static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)
+ dmaengine_terminate_all(dd->dma_lch_in);
+ dmaengine_terminate_all(dd->dma_lch_out);
+
+- dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);
+- dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len, DMA_FROM_DEVICE);
+-
+ return err;
+ }
+
+diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
+index 4fd9961d552e..d42537425438 100644
+--- a/drivers/firmware/efi/cper.c
++++ b/drivers/firmware/efi/cper.c
+@@ -305,10 +305,17 @@ const char *cper_mem_err_unpack(struct trace_seq *p,
+ return ret;
+ }
+
+-static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem)
++static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem,
++ int len)
+ {
+ struct cper_mem_err_compact cmem;
+
++ /* Don't trust UEFI 2.1/2.2 structure with bad validation bits */
++ if (len == sizeof(struct cper_sec_mem_err_old) &&
++ (mem->validation_bits & ~(CPER_MEM_VALID_RANK_NUMBER - 1))) {
++ pr_err(FW_WARN "valid bits set for fields beyond structure\n");
++ return;
++ }
+ if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)
+ printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);
+ if (mem->validation_bits & CPER_MEM_VALID_PA)
+@@ -405,8 +412,10 @@ static void cper_estatus_print_section(
+ } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) {
+ struct cper_sec_mem_err *mem_err = (void *)(gdata + 1);
+ printk("%s""section_type: memory error\n", newpfx);
+- if (gdata->error_data_length >= sizeof(*mem_err))
+- cper_print_mem(newpfx, mem_err);
++ if (gdata->error_data_length >=
++ sizeof(struct cper_sec_mem_err_old))
++ cper_print_mem(newpfx, mem_err,
++ gdata->error_data_length);
+ else
+ goto err_section_too_small;
+ } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) {
+diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
+index e14363d12690..63226e9036a1 100644
+--- a/drivers/firmware/efi/efi.c
++++ b/drivers/firmware/efi/efi.c
+@@ -57,6 +57,11 @@ bool efi_runtime_disabled(void)
+
+ static int __init parse_efi_cmdline(char *str)
+ {
++ if (!str) {
++ pr_warn("need at least one option\n");
++ return -EINVAL;
++ }
++
+ if (parse_option_str(str, "noruntime"))
+ disable_runtime = true;
+
+diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
+index 89049335b738..cd6dae08175e 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
++++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
+@@ -863,8 +863,10 @@ nouveau_drm_preclose(struct drm_device *dev, struct drm_file *fpriv)
+
+ pm_runtime_get_sync(dev->dev);
+
++ mutex_lock(&cli->mutex);
+ if (cli->abi16)
+ nouveau_abi16_fini(cli->abi16);
++ mutex_unlock(&cli->mutex);
+
+ mutex_lock(&drm->client.mutex);
+ list_del(&cli->head);
+diff --git a/drivers/gpu/drm/nouveau/nv04_fbcon.c b/drivers/gpu/drm/nouveau/nv04_fbcon.c
+index 4ef602c5469d..495c57644ced 100644
+--- a/drivers/gpu/drm/nouveau/nv04_fbcon.c
++++ b/drivers/gpu/drm/nouveau/nv04_fbcon.c
+@@ -203,7 +203,7 @@ nv04_fbcon_accel_init(struct fb_info *info)
+ if (ret)
+ return ret;
+
+- if (RING_SPACE(chan, 49)) {
++ if (RING_SPACE(chan, 49 + (device->info.chipset >= 0x11 ? 4 : 0))) {
+ nouveau_fbcon_gpu_lockup(info);
+ return 0;
+ }
+diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
+index 7da7958556a3..981342d142ff 100644
+--- a/drivers/gpu/drm/nouveau/nv50_display.c
++++ b/drivers/gpu/drm/nouveau/nv50_display.c
+@@ -979,7 +979,7 @@ nv50_crtc_cursor_show_hide(struct nouveau_crtc *nv_crtc, bool show, bool update)
+ {
+ struct nv50_mast *mast = nv50_mast(nv_crtc->base.dev);
+
+- if (show && nv_crtc->cursor.nvbo)
++ if (show && nv_crtc->cursor.nvbo && nv_crtc->base.enabled)
+ nv50_crtc_cursor_show(nv_crtc);
+ else
+ nv50_crtc_cursor_hide(nv_crtc);
+diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c
+index 80614f1b2074..282143f49d72 100644
+--- a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c
++++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c
+@@ -50,7 +50,12 @@ nv04_instobj_dtor(struct nvkm_object *object)
+ {
+ struct nv04_instmem_priv *priv = (void *)nvkm_instmem(object);
+ struct nv04_instobj_priv *node = (void *)object;
++ struct nvkm_subdev *subdev = (void *)priv;
++
++ mutex_lock(&subdev->mutex);
+ nvkm_mm_free(&priv->heap, &node->mem);
++ mutex_unlock(&subdev->mutex);
++
+ nvkm_instobj_destroy(&node->base);
+ }
+
+@@ -62,6 +67,7 @@ nv04_instobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nv04_instmem_priv *priv = (void *)nvkm_instmem(parent);
+ struct nv04_instobj_priv *node;
+ struct nvkm_instobj_args *args = data;
++ struct nvkm_subdev *subdev = (void *)priv;
+ int ret;
+
+ if (!args->align)
+@@ -72,8 +78,10 @@ nv04_instobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ if (ret)
+ return ret;
+
++ mutex_lock(&subdev->mutex);
+ ret = nvkm_mm_head(&priv->heap, 0, 1, args->size, args->size,
+ args->align, &node->mem);
++ mutex_unlock(&subdev->mutex);
+ if (ret)
+ return ret;
+
+diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
+index 3318de690e00..a2dbbbe0d8d7 100644
+--- a/drivers/hid/hid-cp2112.c
++++ b/drivers/hid/hid-cp2112.c
+@@ -356,6 +356,8 @@ static int cp2112_read(struct cp2112_device *dev, u8 *data, size_t size)
+ struct cp2112_force_read_report report;
+ int ret;
+
++ if (size > sizeof(dev->read_data))
++ size = sizeof(dev->read_data);
+ report.report = CP2112_DATA_READ_FORCE_SEND;
+ report.length = cpu_to_be16(size);
+
+diff --git a/drivers/hwmon/nct7802.c b/drivers/hwmon/nct7802.c
+index 28fcb2e246d5..fbfc02bb2cfa 100644
+--- a/drivers/hwmon/nct7802.c
++++ b/drivers/hwmon/nct7802.c
+@@ -195,7 +195,7 @@ abort:
+ }
+
+ static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index,
+- unsigned int voltage)
++ unsigned long voltage)
+ {
+ int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr];
+ int err;
+diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
+index b77b82f24480..6153df735e82 100644
+--- a/drivers/hwmon/nct7904.c
++++ b/drivers/hwmon/nct7904.c
+@@ -412,8 +412,9 @@ static ssize_t show_pwm(struct device *dev,
+ return sprintf(buf, "%d\n", val);
+ }
+
+-static ssize_t store_mode(struct device *dev, struct device_attribute *devattr,
+- const char *buf, size_t count)
++static ssize_t store_enable(struct device *dev,
++ struct device_attribute *devattr,
++ const char *buf, size_t count)
+ {
+ int index = to_sensor_dev_attr(devattr)->index;
+ struct nct7904_data *data = dev_get_drvdata(dev);
+@@ -422,18 +423,18 @@ static ssize_t store_mode(struct device *dev, struct device_attribute *devattr,
+
+ if (kstrtoul(buf, 10, &val) < 0)
+ return -EINVAL;
+- if (val > 1 || (val && !data->fan_mode[index]))
++ if (val < 1 || val > 2 || (val == 2 && !data->fan_mode[index]))
+ return -EINVAL;
+
+ ret = nct7904_write_reg(data, BANK_3, FANCTL1_FMR_REG + index,
+- val ? data->fan_mode[index] : 0);
++ val == 2 ? data->fan_mode[index] : 0);
+
+ return ret ? ret : count;
+ }
+
+-/* Return 0 for manual mode or 1 for SmartFan mode */
+-static ssize_t show_mode(struct device *dev,
+- struct device_attribute *devattr, char *buf)
++/* Return 1 for manual mode or 2 for SmartFan mode */
++static ssize_t show_enable(struct device *dev,
++ struct device_attribute *devattr, char *buf)
+ {
+ int index = to_sensor_dev_attr(devattr)->index;
+ struct nct7904_data *data = dev_get_drvdata(dev);
+@@ -443,36 +444,36 @@ static ssize_t show_mode(struct device *dev,
+ if (val < 0)
+ return val;
+
+- return sprintf(buf, "%d\n", val ? 1 : 0);
++ return sprintf(buf, "%d\n", val ? 2 : 1);
+ }
+
+ /* 2 attributes per channel: pwm and mode */
+-static SENSOR_DEVICE_ATTR(fan1_pwm, S_IRUGO | S_IWUSR,
++static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR,
+ show_pwm, store_pwm, 0);
+-static SENSOR_DEVICE_ATTR(fan1_mode, S_IRUGO | S_IWUSR,
+- show_mode, store_mode, 0);
+-static SENSOR_DEVICE_ATTR(fan2_pwm, S_IRUGO | S_IWUSR,
++static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
++ show_enable, store_enable, 0);
++static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
+ show_pwm, store_pwm, 1);
+-static SENSOR_DEVICE_ATTR(fan2_mode, S_IRUGO | S_IWUSR,
+- show_mode, store_mode, 1);
+-static SENSOR_DEVICE_ATTR(fan3_pwm, S_IRUGO | S_IWUSR,
++static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
++ show_enable, store_enable, 1);
++static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR,
+ show_pwm, store_pwm, 2);
+-static SENSOR_DEVICE_ATTR(fan3_mode, S_IRUGO | S_IWUSR,
+- show_mode, store_mode, 2);
+-static SENSOR_DEVICE_ATTR(fan4_pwm, S_IRUGO | S_IWUSR,
++static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
++ show_enable, store_enable, 2);
++static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR,
+ show_pwm, store_pwm, 3);
+-static SENSOR_DEVICE_ATTR(fan4_mode, S_IRUGO | S_IWUSR,
+- show_mode, store_mode, 3);
++static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
++ show_enable, store_enable, 3);
+
+ static struct attribute *nct7904_fanctl_attrs[] = {
+- &sensor_dev_attr_fan1_pwm.dev_attr.attr,
+- &sensor_dev_attr_fan1_mode.dev_attr.attr,
+- &sensor_dev_attr_fan2_pwm.dev_attr.attr,
+- &sensor_dev_attr_fan2_mode.dev_attr.attr,
+- &sensor_dev_attr_fan3_pwm.dev_attr.attr,
+- &sensor_dev_attr_fan3_mode.dev_attr.attr,
+- &sensor_dev_attr_fan4_pwm.dev_attr.attr,
+- &sensor_dev_attr_fan4_mode.dev_attr.attr,
++ &sensor_dev_attr_pwm1.dev_attr.attr,
++ &sensor_dev_attr_pwm1_enable.dev_attr.attr,
++ &sensor_dev_attr_pwm2.dev_attr.attr,
++ &sensor_dev_attr_pwm2_enable.dev_attr.attr,
++ &sensor_dev_attr_pwm3.dev_attr.attr,
++ &sensor_dev_attr_pwm3_enable.dev_attr.attr,
++ &sensor_dev_attr_pwm4.dev_attr.attr,
++ &sensor_dev_attr_pwm4_enable.dev_attr.attr,
+ NULL
+ };
+
+diff --git a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
+index e5cc43074196..2d13fd08ceb7 100644
+--- a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
++++ b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
+@@ -176,7 +176,8 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
+ else
+ size += ipoib_recvq_size * ipoib_max_conn_qp;
+ } else
+- goto out_free_wq;
++ if (ret != -ENOSYS)
++ goto out_free_wq;
+
+ priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0);
+ if (IS_ERR(priv->recv_cq)) {
+diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
+index 35c8d0ceabee..3a32caf06bf1 100644
+--- a/drivers/input/mouse/synaptics.c
++++ b/drivers/input/mouse/synaptics.c
+@@ -1199,7 +1199,7 @@ static void set_input_params(struct psmouse *psmouse,
+ ABS_MT_POSITION_Y);
+ /* Image sensors can report per-contact pressure */
+ input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
+- input_mt_init_slots(dev, 3, INPUT_MT_POINTER | INPUT_MT_TRACK);
++ input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
+
+ /* Image sensors can signal 4 and 5 finger clicks */
+ __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
+diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
+index f2c6c352c55a..2c41107240de 100644
+--- a/drivers/input/touchscreen/usbtouchscreen.c
++++ b/drivers/input/touchscreen/usbtouchscreen.c
+@@ -627,6 +627,9 @@ static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
+ goto err_out;
+ }
+
++ /* TSC-25 data sheet specifies a delay after the RESET command */
++ msleep(150);
++
+ /* set coordinate output rate */
+ buf[0] = buf[1] = 0xFF;
+ ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
+diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
+index 5ecfaf29933a..c87c4b1bfc00 100644
+--- a/drivers/iommu/intel-iommu.c
++++ b/drivers/iommu/intel-iommu.c
+@@ -1756,8 +1756,9 @@ static int domain_init(struct dmar_domain *domain, int guest_width)
+
+ static void domain_exit(struct dmar_domain *domain)
+ {
++ struct dmar_drhd_unit *drhd;
++ struct intel_iommu *iommu;
+ struct page *freelist = NULL;
+- int i;
+
+ /* Domain 0 is reserved, so dont process it */
+ if (!domain)
+@@ -1777,8 +1778,10 @@ static void domain_exit(struct dmar_domain *domain)
+
+ /* clear attached or cached domains */
+ rcu_read_lock();
+- for_each_set_bit(i, domain->iommu_bmp, g_num_of_iommus)
+- iommu_detach_domain(domain, g_iommus[i]);
++ for_each_active_iommu(iommu, drhd)
++ if (domain_type_is_vm(domain) ||
++ test_bit(iommu->seq_id, domain->iommu_bmp))
++ iommu_detach_domain(domain, iommu);
+ rcu_read_unlock();
+
+ dma_free_pagelist(freelist);
+diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
+index 1b7e155869f6..c00e2db351ba 100644
+--- a/drivers/irqchip/irq-gic-v3-its.c
++++ b/drivers/irqchip/irq-gic-v3-its.c
+@@ -75,6 +75,13 @@ struct its_node {
+
+ #define ITS_ITT_ALIGN SZ_256
+
++struct event_lpi_map {
++ unsigned long *lpi_map;
++ u16 *col_map;
++ irq_hw_number_t lpi_base;
++ int nr_lpis;
++};
++
+ /*
+ * The ITS view of a device - belongs to an ITS, a collection, owns an
+ * interrupt translation table, and a list of interrupts.
+@@ -82,11 +89,8 @@ struct its_node {
+ struct its_device {
+ struct list_head entry;
+ struct its_node *its;
+- struct its_collection *collection;
++ struct event_lpi_map event_map;
+ void *itt;
+- unsigned long *lpi_map;
+- irq_hw_number_t lpi_base;
+- int nr_lpis;
+ u32 nr_ites;
+ u32 device_id;
+ };
+@@ -99,6 +103,14 @@ static struct rdists *gic_rdists;
+ #define gic_data_rdist() (raw_cpu_ptr(gic_rdists->rdist))
+ #define gic_data_rdist_rd_base() (gic_data_rdist()->rd_base)
+
++static struct its_collection *dev_event_to_col(struct its_device *its_dev,
++ u32 event)
++{
++ struct its_node *its = its_dev->its;
++
++ return its->collections + its_dev->event_map.col_map[event];
++}
++
+ /*
+ * ITS command descriptors - parameters to be encoded in a command
+ * block.
+@@ -134,7 +146,7 @@ struct its_cmd_desc {
+ struct {
+ struct its_device *dev;
+ struct its_collection *col;
+- u32 id;
++ u32 event_id;
+ } its_movi_cmd;
+
+ struct {
+@@ -241,7 +253,7 @@ static struct its_collection *its_build_mapd_cmd(struct its_cmd_block *cmd,
+
+ its_fixup_cmd(cmd);
+
+- return desc->its_mapd_cmd.dev->collection;
++ return NULL;
+ }
+
+ static struct its_collection *its_build_mapc_cmd(struct its_cmd_block *cmd,
+@@ -260,52 +272,72 @@ static struct its_collection *its_build_mapc_cmd(struct its_cmd_block *cmd,
+ static struct its_collection *its_build_mapvi_cmd(struct its_cmd_block *cmd,
+ struct its_cmd_desc *desc)
+ {
++ struct its_collection *col;
++
++ col = dev_event_to_col(desc->its_mapvi_cmd.dev,
++ desc->its_mapvi_cmd.event_id);
++
+ its_encode_cmd(cmd, GITS_CMD_MAPVI);
+ its_encode_devid(cmd, desc->its_mapvi_cmd.dev->device_id);
+ its_encode_event_id(cmd, desc->its_mapvi_cmd.event_id);
+ its_encode_phys_id(cmd, desc->its_mapvi_cmd.phys_id);
+- its_encode_collection(cmd, desc->its_mapvi_cmd.dev->collection->col_id);
++ its_encode_collection(cmd, col->col_id);
+
+ its_fixup_cmd(cmd);
+
+- return desc->its_mapvi_cmd.dev->collection;
++ return col;
+ }
+
+ static struct its_collection *its_build_movi_cmd(struct its_cmd_block *cmd,
+ struct its_cmd_desc *desc)
+ {
++ struct its_collection *col;
++
++ col = dev_event_to_col(desc->its_movi_cmd.dev,
++ desc->its_movi_cmd.event_id);
++
+ its_encode_cmd(cmd, GITS_CMD_MOVI);
+ its_encode_devid(cmd, desc->its_movi_cmd.dev->device_id);
+- its_encode_event_id(cmd, desc->its_movi_cmd.id);
++ its_encode_event_id(cmd, desc->its_movi_cmd.event_id);
+ its_encode_collection(cmd, desc->its_movi_cmd.col->col_id);
+
+ its_fixup_cmd(cmd);
+
+- return desc->its_movi_cmd.dev->collection;
++ return col;
+ }
+
+ static struct its_collection *its_build_discard_cmd(struct its_cmd_block *cmd,
+ struct its_cmd_desc *desc)
+ {
++ struct its_collection *col;
++
++ col = dev_event_to_col(desc->its_discard_cmd.dev,
++ desc->its_discard_cmd.event_id);
++
+ its_encode_cmd(cmd, GITS_CMD_DISCARD);
+ its_encode_devid(cmd, desc->its_discard_cmd.dev->device_id);
+ its_encode_event_id(cmd, desc->its_discard_cmd.event_id);
+
+ its_fixup_cmd(cmd);
+
+- return desc->its_discard_cmd.dev->collection;
++ return col;
+ }
+
+ static struct its_collection *its_build_inv_cmd(struct its_cmd_block *cmd,
+ struct its_cmd_desc *desc)
+ {
++ struct its_collection *col;
++
++ col = dev_event_to_col(desc->its_inv_cmd.dev,
++ desc->its_inv_cmd.event_id);
++
+ its_encode_cmd(cmd, GITS_CMD_INV);
+ its_encode_devid(cmd, desc->its_inv_cmd.dev->device_id);
+ its_encode_event_id(cmd, desc->its_inv_cmd.event_id);
+
+ its_fixup_cmd(cmd);
+
+- return desc->its_inv_cmd.dev->collection;
++ return col;
+ }
+
+ static struct its_collection *its_build_invall_cmd(struct its_cmd_block *cmd,
+@@ -497,7 +529,7 @@ static void its_send_movi(struct its_device *dev,
+
+ desc.its_movi_cmd.dev = dev;
+ desc.its_movi_cmd.col = col;
+- desc.its_movi_cmd.id = id;
++ desc.its_movi_cmd.event_id = id;
+
+ its_send_single_command(dev->its, its_build_movi_cmd, &desc);
+ }
+@@ -528,7 +560,7 @@ static void its_send_invall(struct its_node *its, struct its_collection *col)
+ static inline u32 its_get_event_id(struct irq_data *d)
+ {
+ struct its_device *its_dev = irq_data_get_irq_chip_data(d);
+- return d->hwirq - its_dev->lpi_base;
++ return d->hwirq - its_dev->event_map.lpi_base;
+ }
+
+ static void lpi_set_config(struct irq_data *d, bool enable)
+@@ -583,7 +615,7 @@ static int its_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
+
+ target_col = &its_dev->its->collections[cpu];
+ its_send_movi(its_dev, target_col, id);
+- its_dev->collection = target_col;
++ its_dev->event_map.col_map[id] = cpu;
+
+ return IRQ_SET_MASK_OK_DONE;
+ }
+@@ -713,8 +745,10 @@ out:
+ return bitmap;
+ }
+
+-static void its_lpi_free(unsigned long *bitmap, int base, int nr_ids)
++static void its_lpi_free(struct event_lpi_map *map)
+ {
++ int base = map->lpi_base;
++ int nr_ids = map->nr_lpis;
+ int lpi;
+
+ spin_lock(&lpi_lock);
+@@ -731,7 +765,8 @@ static void its_lpi_free(unsigned long *bitmap, int base, int nr_ids)
+
+ spin_unlock(&lpi_lock);
+
+- kfree(bitmap);
++ kfree(map->lpi_map);
++ kfree(map->col_map);
+ }
+
+ /*
+@@ -1099,11 +1134,11 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
+ struct its_device *dev;
+ unsigned long *lpi_map;
+ unsigned long flags;
++ u16 *col_map = NULL;
+ void *itt;
+ int lpi_base;
+ int nr_lpis;
+ int nr_ites;
+- int cpu;
+ int sz;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+@@ -1117,20 +1152,24 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
+ sz = max(sz, ITS_ITT_ALIGN) + ITS_ITT_ALIGN - 1;
+ itt = kzalloc(sz, GFP_KERNEL);
+ lpi_map = its_lpi_alloc_chunks(nvecs, &lpi_base, &nr_lpis);
++ if (lpi_map)
++ col_map = kzalloc(sizeof(*col_map) * nr_lpis, GFP_KERNEL);
+
+- if (!dev || !itt || !lpi_map) {
++ if (!dev || !itt || !lpi_map || !col_map) {
+ kfree(dev);
+ kfree(itt);
+ kfree(lpi_map);
++ kfree(col_map);
+ return NULL;
+ }
+
+ dev->its = its;
+ dev->itt = itt;
+ dev->nr_ites = nr_ites;
+- dev->lpi_map = lpi_map;
+- dev->lpi_base = lpi_base;
+- dev->nr_lpis = nr_lpis;
++ dev->event_map.lpi_map = lpi_map;
++ dev->event_map.col_map = col_map;
++ dev->event_map.lpi_base = lpi_base;
++ dev->event_map.nr_lpis = nr_lpis;
+ dev->device_id = dev_id;
+ INIT_LIST_HEAD(&dev->entry);
+
+@@ -1138,10 +1177,6 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
+ list_add(&dev->entry, &its->its_device_list);
+ raw_spin_unlock_irqrestore(&its->lock, flags);
+
+- /* Bind the device to the first possible CPU */
+- cpu = cpumask_first(cpu_online_mask);
+- dev->collection = &its->collections[cpu];
+-
+ /* Map device to its ITT */
+ its_send_mapd(dev, 1);
+
+@@ -1163,12 +1198,13 @@ static int its_alloc_device_irq(struct its_device *dev, irq_hw_number_t *hwirq)
+ {
+ int idx;
+
+- idx = find_first_zero_bit(dev->lpi_map, dev->nr_lpis);
+- if (idx == dev->nr_lpis)
++ idx = find_first_zero_bit(dev->event_map.lpi_map,
++ dev->event_map.nr_lpis);
++ if (idx == dev->event_map.nr_lpis)
+ return -ENOSPC;
+
+- *hwirq = dev->lpi_base + idx;
+- set_bit(idx, dev->lpi_map);
++ *hwirq = dev->event_map.lpi_base + idx;
++ set_bit(idx, dev->event_map.lpi_map);
+
+ return 0;
+ }
+@@ -1288,7 +1324,8 @@ static int its_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
+ irq_domain_set_hwirq_and_chip(domain, virq + i,
+ hwirq, &its_irq_chip, its_dev);
+ dev_dbg(info->scratchpad[1].ptr, "ID:%d pID:%d vID:%d\n",
+- (int)(hwirq - its_dev->lpi_base), (int)hwirq, virq + i);
++ (int)(hwirq - its_dev->event_map.lpi_base),
++ (int)hwirq, virq + i);
+ }
+
+ return 0;
+@@ -1300,6 +1337,9 @@ static void its_irq_domain_activate(struct irq_domain *domain,
+ struct its_device *its_dev = irq_data_get_irq_chip_data(d);
+ u32 event = its_get_event_id(d);
+
++ /* Bind the LPI to the first possible CPU */
++ its_dev->event_map.col_map[event] = cpumask_first(cpu_online_mask);
++
+ /* Map the GIC IRQ and event to the device */
+ its_send_mapvi(its_dev, d->hwirq, event);
+ }
+@@ -1327,17 +1367,16 @@ static void its_irq_domain_free(struct irq_domain *domain, unsigned int virq,
+ u32 event = its_get_event_id(data);
+
+ /* Mark interrupt index as unused */
+- clear_bit(event, its_dev->lpi_map);
++ clear_bit(event, its_dev->event_map.lpi_map);
+
+ /* Nuke the entry in the domain */
+ irq_domain_reset_irq_data(data);
+ }
+
+ /* If all interrupts have been freed, start mopping the floor */
+- if (bitmap_empty(its_dev->lpi_map, its_dev->nr_lpis)) {
+- its_lpi_free(its_dev->lpi_map,
+- its_dev->lpi_base,
+- its_dev->nr_lpis);
++ if (bitmap_empty(its_dev->event_map.lpi_map,
++ its_dev->event_map.nr_lpis)) {
++ its_lpi_free(&its_dev->event_map);
+
+ /* Unmap device/itt */
+ its_send_mapd(its_dev, 0);
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index 2caf492890d6..e8d84566f311 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -1053,13 +1053,10 @@ static struct dm_rq_target_io *tio_from_request(struct request *rq)
+ */
+ static void rq_completed(struct mapped_device *md, int rw, bool run_queue)
+ {
+- int nr_requests_pending;
+-
+ atomic_dec(&md->pending[rw]);
+
+ /* nudge anyone waiting on suspend queue */
+- nr_requests_pending = md_in_flight(md);
+- if (!nr_requests_pending)
++ if (!md_in_flight(md))
+ wake_up(&md->wait);
+
+ /*
+@@ -1071,8 +1068,7 @@ static void rq_completed(struct mapped_device *md, int rw, bool run_queue)
+ if (run_queue) {
+ if (md->queue->mq_ops)
+ blk_mq_run_hw_queues(md->queue, true);
+- else if (!nr_requests_pending ||
+- (nr_requests_pending >= md->queue->nr_congestion_on))
++ else
+ blk_run_queue_async(md->queue);
+ }
+
+diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
+index 9157a29c8dbf..cd7b0c1e882d 100644
+--- a/drivers/md/raid1.c
++++ b/drivers/md/raid1.c
+@@ -336,7 +336,7 @@ static void raid1_end_read_request(struct bio *bio, int error)
+ spin_lock_irqsave(&conf->device_lock, flags);
+ if (r1_bio->mddev->degraded == conf->raid_disks ||
+ (r1_bio->mddev->degraded == conf->raid_disks-1 &&
+- !test_bit(Faulty, &conf->mirrors[mirror].rdev->flags)))
++ test_bit(In_sync, &conf->mirrors[mirror].rdev->flags)))
+ uptodate = 1;
+ spin_unlock_irqrestore(&conf->device_lock, flags);
+ }
+diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c
+index d1b55fe62817..e4dc8cdf67a3 100644
+--- a/drivers/misc/cxl/context.c
++++ b/drivers/misc/cxl/context.c
+@@ -113,11 +113,11 @@ static int cxl_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+
+ if (ctx->afu->current_mode == CXL_MODE_DEDICATED) {
+ area = ctx->afu->psn_phys;
+- if (offset > ctx->afu->adapter->ps_size)
++ if (offset >= ctx->afu->adapter->ps_size)
+ return VM_FAULT_SIGBUS;
+ } else {
+ area = ctx->psn_phys;
+- if (offset > ctx->psn_size)
++ if (offset >= ctx->psn_size)
+ return VM_FAULT_SIGBUS;
+ }
+
+diff --git a/drivers/misc/cxl/main.c b/drivers/misc/cxl/main.c
+index 8ccddceead66..de350dd46218 100644
+--- a/drivers/misc/cxl/main.c
++++ b/drivers/misc/cxl/main.c
+@@ -73,7 +73,7 @@ static inline void cxl_slbia_core(struct mm_struct *mm)
+ spin_lock(&adapter->afu_list_lock);
+ for (slice = 0; slice < adapter->slices; slice++) {
+ afu = adapter->afu[slice];
+- if (!afu->enabled)
++ if (!afu || !afu->enabled)
+ continue;
+ rcu_read_lock();
+ idr_for_each_entry(&afu->contexts_idr, ctx, id)
+diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
+index 3e2968159506..e40bcd03bd47 100644
+--- a/drivers/misc/mei/main.c
++++ b/drivers/misc/mei/main.c
+@@ -685,7 +685,7 @@ int mei_register(struct mei_device *dev, struct device *parent)
+ /* Fill in the data structures */
+ devno = MKDEV(MAJOR(mei_devt), dev->minor);
+ cdev_init(&dev->cdev, &mei_fops);
+- dev->cdev.owner = mei_fops.owner;
++ dev->cdev.owner = parent->driver->owner;
+
+ /* Add the device */
+ ret = cdev_add(&dev->cdev, devno, 1);
+diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
+index 9df2b6801f76..d0abdffb0d7c 100644
+--- a/drivers/mmc/host/omap_hsmmc.c
++++ b/drivers/mmc/host/omap_hsmmc.c
+@@ -1062,6 +1062,10 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
+
+ if (status & (CTO_EN | CCRC_EN))
+ end_cmd = 1;
++ if (host->data || host->response_busy) {
++ end_trans = !end_cmd;
++ host->response_busy = 0;
++ }
+ if (status & (CTO_EN | DTO_EN))
+ hsmmc_command_incomplete(host, -ETIMEDOUT, end_cmd);
+ else if (status & (CCRC_EN | DCRC_EN))
+@@ -1081,10 +1085,6 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
+ }
+ dev_dbg(mmc_dev(host->mmc), "AC12 err: 0x%x\n", ac12);
+ }
+- if (host->data || host->response_busy) {
+- end_trans = !end_cmd;
+- host->response_busy = 0;
+- }
+ }
+
+ OMAP_HSMMC_WRITE(host->base, STAT, status);
+diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
+index 3497cfaf683c..a870c42731d7 100644
+--- a/drivers/mmc/host/sdhci-esdhc.h
++++ b/drivers/mmc/host/sdhci-esdhc.h
+@@ -45,6 +45,6 @@
+ #define ESDHC_DMA_SYSCTL 0x40c
+ #define ESDHC_DMA_SNOOP 0x00000040
+
+-#define ESDHC_HOST_CONTROL_RES 0x05
++#define ESDHC_HOST_CONTROL_RES 0x01
+
+ #endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */
+diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
+index b5103a247bc1..065dc70caa1d 100644
+--- a/drivers/mmc/host/sdhci-pxav3.c
++++ b/drivers/mmc/host/sdhci-pxav3.c
+@@ -411,6 +411,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
+ goto err_of_parse;
+ sdhci_get_of_property(pdev);
+ pdata = pxav3_get_mmc_pdata(dev);
++ pdev->dev.platform_data = pdata;
+ } else if (pdata) {
+ /* on-chip device */
+ if (pdata->flags & PXA_FLAG_CARD_PERMANENT)
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index d3dbb28057e9..bec8a307f8cd 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -3037,8 +3037,11 @@ int sdhci_add_host(struct sdhci_host *host)
+ GFP_KERNEL);
+ host->align_buffer = kmalloc(host->align_buffer_sz, GFP_KERNEL);
+ if (!host->adma_table || !host->align_buffer) {
+- dma_free_coherent(mmc_dev(mmc), host->adma_table_sz,
+- host->adma_table, host->adma_addr);
++ if (host->adma_table)
++ dma_free_coherent(mmc_dev(mmc),
++ host->adma_table_sz,
++ host->adma_table,
++ host->adma_addr);
+ kfree(host->align_buffer);
+ pr_warn("%s: Unable to allocate ADMA buffers - falling back to standard DMA\n",
+ mmc_hostname(mmc));
+diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
+index 041525d2595c..5d214d135332 100644
+--- a/drivers/net/can/c_can/c_can.c
++++ b/drivers/net/can/c_can/c_can.c
+@@ -592,6 +592,7 @@ static int c_can_start(struct net_device *dev)
+ {
+ struct c_can_priv *priv = netdev_priv(dev);
+ int err;
++ struct pinctrl *p;
+
+ /* basic c_can configuration */
+ err = c_can_chip_config(dev);
+@@ -604,8 +605,13 @@ static int c_can_start(struct net_device *dev)
+
+ priv->can.state = CAN_STATE_ERROR_ACTIVE;
+
+- /* activate pins */
+- pinctrl_pm_select_default_state(dev->dev.parent);
++ /* Attempt to use "active" if available else use "default" */
++ p = pinctrl_get_select(priv->device, "active");
++ if (!IS_ERR(p))
++ pinctrl_put(p);
++ else
++ pinctrl_pm_select_default_state(priv->device);
++
+ return 0;
+ }
+
+diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
+index e9b1810d319f..aede704605c6 100644
+--- a/drivers/net/can/dev.c
++++ b/drivers/net/can/dev.c
+@@ -440,9 +440,6 @@ unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx)
+ struct can_frame *cf = (struct can_frame *)skb->data;
+ u8 dlc = cf->can_dlc;
+
+- if (!(skb->tstamp.tv64))
+- __net_timestamp(skb);
+-
+ netif_rx(priv->echo_skb[idx]);
+ priv->echo_skb[idx] = NULL;
+
+@@ -578,7 +575,6 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
+ if (unlikely(!skb))
+ return NULL;
+
+- __net_timestamp(skb);
+ skb->protocol = htons(ETH_P_CAN);
+ skb->pkt_type = PACKET_BROADCAST;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+@@ -589,6 +585,7 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
+
+ can_skb_reserve(skb);
+ can_skb_prv(skb)->ifindex = dev->ifindex;
++ can_skb_prv(skb)->skbcnt = 0;
+
+ *cf = (struct can_frame *)skb_put(skb, sizeof(struct can_frame));
+ memset(*cf, 0, sizeof(struct can_frame));
+@@ -607,7 +604,6 @@ struct sk_buff *alloc_canfd_skb(struct net_device *dev,
+ if (unlikely(!skb))
+ return NULL;
+
+- __net_timestamp(skb);
+ skb->protocol = htons(ETH_P_CANFD);
+ skb->pkt_type = PACKET_BROADCAST;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+@@ -618,6 +614,7 @@ struct sk_buff *alloc_canfd_skb(struct net_device *dev,
+
+ can_skb_reserve(skb);
+ can_skb_prv(skb)->ifindex = dev->ifindex;
++ can_skb_prv(skb)->skbcnt = 0;
+
+ *cfd = (struct canfd_frame *)skb_put(skb, sizeof(struct canfd_frame));
+ memset(*cfd, 0, sizeof(struct canfd_frame));
+diff --git a/drivers/net/can/rcar_can.c b/drivers/net/can/rcar_can.c
+index 7deb80dcbe8c..2f9ebad4ff56 100644
+--- a/drivers/net/can/rcar_can.c
++++ b/drivers/net/can/rcar_can.c
+@@ -526,7 +526,7 @@ static int rcar_can_open(struct net_device *ndev)
+ napi_enable(&priv->napi);
+ err = request_irq(ndev->irq, rcar_can_interrupt, 0, ndev->name, ndev);
+ if (err) {
+- netdev_err(ndev, "error requesting interrupt %x\n", ndev->irq);
++ netdev_err(ndev, "error requesting interrupt %d\n", ndev->irq);
+ goto out_close;
+ }
+ can_led_event(ndev, CAN_LED_EVENT_OPEN);
+@@ -758,8 +758,9 @@ static int rcar_can_probe(struct platform_device *pdev)
+ }
+
+ irq = platform_get_irq(pdev, 0);
+- if (!irq) {
++ if (irq < 0) {
+ dev_err(&pdev->dev, "No IRQ resource\n");
++ err = irq;
+ goto fail;
+ }
+
+@@ -823,7 +824,7 @@ static int rcar_can_probe(struct platform_device *pdev)
+
+ devm_can_led_init(ndev);
+
+- dev_info(&pdev->dev, "device registered (reg_base=%p, irq=%u)\n",
++ dev_info(&pdev->dev, "device registered (regs @ %p, IRQ%d)\n",
+ priv->regs, ndev->irq);
+
+ return 0;
+diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
+index f64f5290d6f8..a23a7af8eb9a 100644
+--- a/drivers/net/can/slcan.c
++++ b/drivers/net/can/slcan.c
+@@ -207,7 +207,6 @@ static void slc_bump(struct slcan *sl)
+ if (!skb)
+ return;
+
+- __net_timestamp(skb);
+ skb->dev = sl->dev;
+ skb->protocol = htons(ETH_P_CAN);
+ skb->pkt_type = PACKET_BROADCAST;
+@@ -215,6 +214,7 @@ static void slc_bump(struct slcan *sl)
+
+ can_skb_reserve(skb);
+ can_skb_prv(skb)->ifindex = sl->dev->ifindex;
++ can_skb_prv(skb)->skbcnt = 0;
+
+ memcpy(skb_put(skb, sizeof(struct can_frame)),
+ &cf, sizeof(struct can_frame));
+diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c
+index bf63fee4e743..34c625ea2801 100644
+--- a/drivers/net/can/spi/mcp251x.c
++++ b/drivers/net/can/spi/mcp251x.c
+@@ -1221,17 +1221,16 @@ static int __maybe_unused mcp251x_can_resume(struct device *dev)
+ struct spi_device *spi = to_spi_device(dev);
+ struct mcp251x_priv *priv = spi_get_drvdata(spi);
+
+- if (priv->after_suspend & AFTER_SUSPEND_POWER) {
++ if (priv->after_suspend & AFTER_SUSPEND_POWER)
+ mcp251x_power_enable(priv->power, 1);
++
++ if (priv->after_suspend & AFTER_SUSPEND_UP) {
++ mcp251x_power_enable(priv->transceiver, 1);
+ queue_work(priv->wq, &priv->restart_work);
+ } else {
+- if (priv->after_suspend & AFTER_SUSPEND_UP) {
+- mcp251x_power_enable(priv->transceiver, 1);
+- queue_work(priv->wq, &priv->restart_work);
+- } else {
+- priv->after_suspend = 0;
+- }
++ priv->after_suspend = 0;
+ }
++
+ priv->force_quit = 0;
+ enable_irq(spi->irq);
+ return 0;
+diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c
+index 0ce868de855d..674f367087c5 100644
+--- a/drivers/net/can/vcan.c
++++ b/drivers/net/can/vcan.c
+@@ -78,9 +78,6 @@ static void vcan_rx(struct sk_buff *skb, struct net_device *dev)
+ skb->dev = dev;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+- if (!(skb->tstamp.tv64))
+- __net_timestamp(skb);
+-
+ netif_rx_ni(skb);
+ }
+
+diff --git a/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
+index 8e604a3931ca..ef20be084b24 100644
+--- a/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
++++ b/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
+@@ -540,13 +540,11 @@ static void iwl_set_hw_address_family_8000(struct device *dev,
+ hw_addr = (const u8 *)(mac_override +
+ MAC_ADDRESS_OVERRIDE_FAMILY_8000);
+
+- /* The byte order is little endian 16 bit, meaning 214365 */
+- data->hw_addr[0] = hw_addr[1];
+- data->hw_addr[1] = hw_addr[0];
+- data->hw_addr[2] = hw_addr[3];
+- data->hw_addr[3] = hw_addr[2];
+- data->hw_addr[4] = hw_addr[5];
+- data->hw_addr[5] = hw_addr[4];
++ /*
++ * Store the MAC address from MAO section.
++ * No byte swapping is required in MAO section
++ */
++ memcpy(data->hw_addr, hw_addr, ETH_ALEN);
+
+ /*
+ * Force the use of the OTP MAC address in case of reserved MAC
+diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c
+index ef32e177f662..281451c274ca 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/tx.c
++++ b/drivers/net/wireless/iwlwifi/mvm/tx.c
+@@ -225,7 +225,7 @@ void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd,
+
+ if (info->band == IEEE80211_BAND_2GHZ &&
+ !iwl_mvm_bt_coex_is_shared_ant_avail(mvm))
+- rate_flags = BIT(mvm->cfg->non_shared_ant) << RATE_MCS_ANT_POS;
++ rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS;
+ else
+ rate_flags =
+ BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS;
+diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
+index dc179094e6a0..37e6a6f91487 100644
+--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
++++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
+@@ -2515,6 +2515,12 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
+ trans->hw_rev = (trans->hw_rev & 0xfff0) |
+ (CSR_HW_REV_STEP(trans->hw_rev << 2) << 2);
+
++ ret = iwl_pcie_prepare_card_hw(trans);
++ if (ret) {
++ IWL_WARN(trans, "Exit HW not ready\n");
++ goto out_pci_disable_msi;
++ }
++
+ /*
+ * in-order to recognize C step driver should read chip version
+ * id located at the AUX bus MISC address space.
+diff --git a/drivers/pinctrl/freescale/pinctrl-imx1-core.c b/drivers/pinctrl/freescale/pinctrl-imx1-core.c
+index 5ac59fbb2440..d3a3be7476e1 100644
+--- a/drivers/pinctrl/freescale/pinctrl-imx1-core.c
++++ b/drivers/pinctrl/freescale/pinctrl-imx1-core.c
+@@ -403,14 +403,13 @@ static int imx1_pinconf_set(struct pinctrl_dev *pctldev,
+ unsigned num_configs)
+ {
+ struct imx1_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
+- const struct imx1_pinctrl_soc_info *info = ipctl->info;
+ int i;
+
+ for (i = 0; i != num_configs; ++i) {
+ imx1_write_bit(ipctl, pin_id, configs[i] & 0x01, MX1_PUEN);
+
+ dev_dbg(ipctl->dev, "pinconf set pullup pin %s\n",
+- info->pins[pin_id].name);
++ pin_desc_get(pctldev, pin_id)->name);
+ }
+
+ return 0;
+diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
+index ff828117798f..8de135174e82 100644
+--- a/drivers/regulator/s2mps11.c
++++ b/drivers/regulator/s2mps11.c
+@@ -34,6 +34,8 @@
+ #include <linux/mfd/samsung/s2mps14.h>
+ #include <linux/mfd/samsung/s2mpu02.h>
+
++/* The highest number of possible regulators for supported devices. */
++#define S2MPS_REGULATOR_MAX S2MPS13_REGULATOR_MAX
+ struct s2mps11_info {
+ unsigned int rdev_num;
+ int ramp_delay2;
+@@ -49,7 +51,7 @@ struct s2mps11_info {
+ * One bit for each S2MPS13/S2MPS14/S2MPU02 regulator whether
+ * the suspend mode was enabled.
+ */
+- unsigned long long s2mps14_suspend_state:50;
++ DECLARE_BITMAP(suspend_state, S2MPS_REGULATOR_MAX);
+
+ /* Array of size rdev_num with GPIO-s for external sleep control */
+ int *ext_control_gpio;
+@@ -500,7 +502,7 @@ static int s2mps14_regulator_enable(struct regulator_dev *rdev)
+ switch (s2mps11->dev_type) {
+ case S2MPS13X:
+ case S2MPS14X:
+- if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
++ if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
+ val = S2MPS14_ENABLE_SUSPEND;
+ else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
+ val = S2MPS14_ENABLE_EXT_CONTROL;
+@@ -508,7 +510,7 @@ static int s2mps14_regulator_enable(struct regulator_dev *rdev)
+ val = rdev->desc->enable_mask;
+ break;
+ case S2MPU02:
+- if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
++ if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
+ val = S2MPU02_ENABLE_SUSPEND;
+ else
+ val = rdev->desc->enable_mask;
+@@ -562,7 +564,7 @@ static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
+ if (ret < 0)
+ return ret;
+
+- s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
++ set_bit(rdev_get_id(rdev), s2mps11->suspend_state);
+ /*
+ * Don't enable suspend mode if regulator is already disabled because
+ * this would effectively for a short time turn on the regulator after
+@@ -960,18 +962,22 @@ static int s2mps11_pmic_probe(struct platform_device *pdev)
+ case S2MPS11X:
+ s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
+ regulators = s2mps11_regulators;
++ BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
+ break;
+ case S2MPS13X:
+ s2mps11->rdev_num = ARRAY_SIZE(s2mps13_regulators);
+ regulators = s2mps13_regulators;
++ BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
+ break;
+ case S2MPS14X:
+ s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
+ regulators = s2mps14_regulators;
++ BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
+ break;
+ case S2MPU02:
+ s2mps11->rdev_num = ARRAY_SIZE(s2mpu02_regulators);
+ regulators = s2mpu02_regulators;
++ BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
+ break;
+ default:
+ dev_err(&pdev->dev, "Invalid device type: %u\n",
+diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
+index 0e6ee3ca30e6..e9ae6b924c70 100644
+--- a/drivers/scsi/qla2xxx/qla_dbg.c
++++ b/drivers/scsi/qla2xxx/qla_dbg.c
+@@ -68,7 +68,7 @@
+ * | | | 0xd101-0xd1fe |
+ * | | | 0xd214-0xd2fe |
+ * | Target Mode | 0xe079 | |
+- * | Target Mode Management | 0xf072 | 0xf002 |
++ * | Target Mode Management | 0xf080 | 0xf002 |
+ * | | | 0xf046-0xf049 |
+ * | Target Mode Task Management | 0x1000b | |
+ * ----------------------------------------------------------------------
+diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
+index 285cb204f300..998498e2341b 100644
+--- a/drivers/scsi/qla2xxx/qla_init.c
++++ b/drivers/scsi/qla2xxx/qla_init.c
+@@ -2924,6 +2924,7 @@ qla2x00_rport_del(void *data)
+ struct fc_rport *rport;
+ scsi_qla_host_t *vha = fcport->vha;
+ unsigned long flags;
++ unsigned long vha_flags;
+
+ spin_lock_irqsave(fcport->vha->host->host_lock, flags);
+ rport = fcport->drport ? fcport->drport: fcport->rport;
+@@ -2935,7 +2936,9 @@ qla2x00_rport_del(void *data)
+ * Release the target mode FC NEXUS in qla_target.c code
+ * if target mod is enabled.
+ */
++ spin_lock_irqsave(&vha->hw->hardware_lock, vha_flags);
+ qlt_fc_port_deleted(vha, fcport);
++ spin_unlock_irqrestore(&vha->hw->hardware_lock, vha_flags);
+ }
+ }
+
+@@ -3303,6 +3306,7 @@ qla2x00_reg_remote_port(scsi_qla_host_t *vha, fc_port_t *fcport)
+ * Create target mode FC NEXUS in qla_target.c if target mode is
+ * enabled..
+ */
++
+ qlt_fc_port_added(vha, fcport);
+
+ spin_lock_irqsave(fcport->vha->host->host_lock, flags);
+@@ -3460,20 +3464,43 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
+ if ((fcport->flags & FCF_FABRIC_DEVICE) == 0)
+ continue;
+
+- if (fcport->scan_state == QLA_FCPORT_SCAN &&
+- atomic_read(&fcport->state) == FCS_ONLINE) {
+- qla2x00_mark_device_lost(vha, fcport,
+- ql2xplogiabsentdevice, 0);
+- if (fcport->loop_id != FC_NO_LOOP_ID &&
+- (fcport->flags & FCF_FCP2_DEVICE) == 0 &&
+- fcport->port_type != FCT_INITIATOR &&
+- fcport->port_type != FCT_BROADCAST) {
+- ha->isp_ops->fabric_logout(vha,
+- fcport->loop_id,
+- fcport->d_id.b.domain,
+- fcport->d_id.b.area,
+- fcport->d_id.b.al_pa);
+- qla2x00_clear_loop_id(fcport);
++ if (fcport->scan_state == QLA_FCPORT_SCAN) {
++ if (qla_ini_mode_enabled(base_vha) &&
++ atomic_read(&fcport->state) == FCS_ONLINE) {
++ qla2x00_mark_device_lost(vha, fcport,
++ ql2xplogiabsentdevice, 0);
++ if (fcport->loop_id != FC_NO_LOOP_ID &&
++ (fcport->flags & FCF_FCP2_DEVICE) == 0 &&
++ fcport->port_type != FCT_INITIATOR &&
++ fcport->port_type != FCT_BROADCAST) {
++ ha->isp_ops->fabric_logout(vha,
++ fcport->loop_id,
++ fcport->d_id.b.domain,
++ fcport->d_id.b.area,
++ fcport->d_id.b.al_pa);
++ qla2x00_clear_loop_id(fcport);
++ }
++ } else if (!qla_ini_mode_enabled(base_vha)) {
++ /*
++ * In target mode, explicitly kill
++ * sessions and log out of devices
++ * that are gone, so that we don't
++ * end up with an initiator using the
++ * wrong ACL (if the fabric recycles
++ * an FC address and we have a stale
++ * session around) and so that we don't
++ * report initiators that are no longer
++ * on the fabric.
++ */
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf077,
++ "port gone, logging out/killing session: "
++ "%8phC state 0x%x flags 0x%x fc4_type 0x%x "
++ "scan_state %d\n",
++ fcport->port_name,
++ atomic_read(&fcport->state),
++ fcport->flags, fcport->fc4_type,
++ fcport->scan_state);
++ qlt_fc_port_deleted(vha, fcport);
+ }
+ }
+ }
+@@ -3494,6 +3521,28 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
+ (fcport->flags & FCF_LOGIN_NEEDED) == 0)
+ continue;
+
++ /*
++ * If we're not an initiator, skip looking for devices
++ * and logging in. There's no reason for us to do it,
++ * and it seems to actively cause problems in target
++ * mode if we race with the initiator logging into us
++ * (we might get the "port ID used" status back from
++ * our login command and log out the initiator, which
++ * seems to cause havoc).
++ */
++ if (!qla_ini_mode_enabled(base_vha)) {
++ if (fcport->scan_state == QLA_FCPORT_FOUND) {
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf078,
++ "port %8phC state 0x%x flags 0x%x fc4_type 0x%x "
++ "scan_state %d (initiator mode disabled; skipping "
++ "login)\n", fcport->port_name,
++ atomic_read(&fcport->state),
++ fcport->flags, fcport->fc4_type,
++ fcport->scan_state);
++ }
++ continue;
++ }
++
+ if (fcport->loop_id == FC_NO_LOOP_ID) {
+ fcport->loop_id = next_loopid;
+ rval = qla2x00_find_new_loop_id(
+@@ -3520,16 +3569,38 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
+ test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags))
+ break;
+
+- /* Find a new loop ID to use. */
+- fcport->loop_id = next_loopid;
+- rval = qla2x00_find_new_loop_id(base_vha, fcport);
+- if (rval != QLA_SUCCESS) {
+- /* Ran out of IDs to use */
+- break;
+- }
++ /*
++ * If we're not an initiator, skip looking for devices
++ * and logging in. There's no reason for us to do it,
++ * and it seems to actively cause problems in target
++ * mode if we race with the initiator logging into us
++ * (we might get the "port ID used" status back from
++ * our login command and log out the initiator, which
++ * seems to cause havoc).
++ */
++ if (qla_ini_mode_enabled(base_vha)) {
++ /* Find a new loop ID to use. */
++ fcport->loop_id = next_loopid;
++ rval = qla2x00_find_new_loop_id(base_vha,
++ fcport);
++ if (rval != QLA_SUCCESS) {
++ /* Ran out of IDs to use */
++ break;
++ }
+
+- /* Login and update database */
+- qla2x00_fabric_dev_login(vha, fcport, &next_loopid);
++ /* Login and update database */
++ qla2x00_fabric_dev_login(vha, fcport,
++ &next_loopid);
++ } else {
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf079,
++ "new port %8phC state 0x%x flags 0x%x fc4_type "
++ "0x%x scan_state %d (initiator mode disabled; "
++ "skipping login)\n",
++ fcport->port_name,
++ atomic_read(&fcport->state),
++ fcport->flags, fcport->fc4_type,
++ fcport->scan_state);
++ }
+
+ list_move_tail(&fcport->list, &vha->vp_fcports);
+ }
+@@ -3725,11 +3796,12 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha,
+ fcport->fp_speed = new_fcport->fp_speed;
+
+ /*
+- * If address the same and state FCS_ONLINE, nothing
+- * changed.
++ * If address the same and state FCS_ONLINE
++ * (or in target mode), nothing changed.
+ */
+ if (fcport->d_id.b24 == new_fcport->d_id.b24 &&
+- atomic_read(&fcport->state) == FCS_ONLINE) {
++ (atomic_read(&fcport->state) == FCS_ONLINE ||
++ !qla_ini_mode_enabled(base_vha))) {
+ break;
+ }
+
+@@ -3749,6 +3821,22 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha,
+ * Log it out if still logged in and mark it for
+ * relogin later.
+ */
++ if (!qla_ini_mode_enabled(base_vha)) {
++ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf080,
++ "port changed FC ID, %8phC"
++ " old %x:%x:%x (loop_id 0x%04x)-> new %x:%x:%x\n",
++ fcport->port_name,
++ fcport->d_id.b.domain,
++ fcport->d_id.b.area,
++ fcport->d_id.b.al_pa,
++ fcport->loop_id,
++ new_fcport->d_id.b.domain,
++ new_fcport->d_id.b.area,
++ new_fcport->d_id.b.al_pa);
++ fcport->d_id.b24 = new_fcport->d_id.b24;
++ break;
++ }
++
+ fcport->d_id.b24 = new_fcport->d_id.b24;
+ fcport->flags |= FCF_LOGIN_NEEDED;
+ if (fcport->loop_id != FC_NO_LOOP_ID &&
+@@ -3768,6 +3856,7 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha,
+ if (found)
+ continue;
+ /* If device was not in our fcports list, then add it. */
++ new_fcport->scan_state = QLA_FCPORT_FOUND;
+ list_add_tail(&new_fcport->list, new_fcports);
+
+ /* Allocate a new replacement fcport. */
+diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
+index fe8a8d157e22..496a733d0ca3 100644
+--- a/drivers/scsi/qla2xxx/qla_target.c
++++ b/drivers/scsi/qla2xxx/qla_target.c
+@@ -113,6 +113,7 @@ static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
+ static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint16_t status, int qfull);
+ static void qlt_disable_vha(struct scsi_qla_host *vha);
++static void qlt_clear_tgt_db(struct qla_tgt *tgt);
+ /*
+ * Global Variables
+ */
+@@ -431,10 +432,10 @@ static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
+
+ loop_id = le16_to_cpu(n->u.isp24.nport_handle);
+ if (loop_id == 0xFFFF) {
+-#if 0 /* FIXME: Re-enable Global event handling.. */
+ /* Global event */
+- atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
+- qlt_clear_tgt_db(ha->tgt.qla_tgt);
++ atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
++ qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
++#if 0 /* FIXME: do we need to choose a session here? */
+ if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
+ sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
+ typeof(*sess), sess_list_entry);
+@@ -782,25 +783,20 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
+
+ void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
+ {
+- struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_tgt_sess *sess;
+- unsigned long flags;
+
+ if (!vha->hw->tgt.tgt_ops)
+ return;
+
+- if (!tgt || (fcport->port_type != FCT_INITIATOR))
++ if (!tgt)
+ return;
+
+- spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (tgt->tgt_stop) {
+- spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
+ }
+ sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
+ if (!sess) {
+- spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
+ }
+
+@@ -808,7 +804,6 @@ void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
+
+ sess->local = 1;
+ qlt_schedule_sess_for_deletion(sess, false);
+- spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ }
+
+ static inline int test_tgt_sess_count(struct qla_tgt *tgt)
+@@ -2347,9 +2342,10 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
+ res = qlt_build_ctio_crc2_pkt(&prm, vha);
+ else
+ res = qlt_24xx_build_ctio_pkt(&prm, vha);
+- if (unlikely(res != 0))
++ if (unlikely(res != 0)) {
++ vha->req->cnt += full_req_cnt;
+ goto out_unmap_unlock;
+-
++ }
+
+ pkt = (struct ctio7_to_24xx *)prm.pkt;
+
+@@ -2487,8 +2483,11 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
+ else
+ res = qlt_24xx_build_ctio_pkt(&prm, vha);
+
+- if (unlikely(res != 0))
++ if (unlikely(res != 0)) {
++ vha->req->cnt += prm.req_cnt;
+ goto out_unlock_free_unmap;
++ }
++
+ pkt = (struct ctio7_to_24xx *)prm.pkt;
+ pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
+ CTIO7_FLAGS_STATUS_MODE_0);
+@@ -2717,7 +2716,7 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
+ static void qlt_send_term_exchange(struct scsi_qla_host *vha,
+ struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
+ {
+- unsigned long flags;
++ unsigned long flags = 0;
+ int rc;
+
+ if (qlt_issue_marker(vha, ha_locked) < 0)
+@@ -2733,17 +2732,18 @@ static void qlt_send_term_exchange(struct scsi_qla_host *vha,
+ rc = __qlt_send_term_exchange(vha, cmd, atio);
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, atio, 0, 0);
+- spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
+ done:
+ if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) ||
+ !cmd->cmd_sent_to_fw)) {
+- if (!ha_locked && !in_interrupt())
+- msleep(250); /* just in case */
+-
+- qlt_unmap_sg(vha, cmd);
++ if (cmd->sg_mapped)
++ qlt_unmap_sg(vha, cmd);
+ vha->hw->tgt.tgt_ops->free_cmd(cmd);
+ }
++
++ if (!ha_locked)
++ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
++
+ return;
+ }
+
+@@ -3347,6 +3347,11 @@ static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
+ cmd->loop_id = sess->loop_id;
+ cmd->conf_compl_supported = sess->conf_compl_supported;
+
++ cmd->cmd_flags = 0;
++ cmd->jiffies_at_alloc = get_jiffies_64();
++
++ cmd->reset_count = vha->hw->chip_reset;
++
+ return cmd;
+ }
+
+@@ -3453,11 +3458,6 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
+ return -ENOMEM;
+ }
+
+- cmd->cmd_flags = 0;
+- cmd->jiffies_at_alloc = get_jiffies_64();
+-
+- cmd->reset_count = vha->hw->chip_reset;
+-
+ cmd->cmd_in_wq = 1;
+ cmd->cmd_flags |= BIT_0;
+ INIT_WORK(&cmd->work, qlt_do_work);
+diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
+index c95a4e943fc6..59c31bf88d92 100644
+--- a/drivers/scsi/scsi_error.c
++++ b/drivers/scsi/scsi_error.c
+@@ -944,7 +944,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses,
+ scmd->sdb.length);
+ scmd->sdb.table.sgl = &ses->sense_sgl;
+ scmd->sc_data_direction = DMA_FROM_DEVICE;
+- scmd->sdb.table.nents = 1;
++ scmd->sdb.table.nents = scmd->sdb.table.orig_nents = 1;
+ scmd->cmnd[0] = REQUEST_SENSE;
+ scmd->cmnd[4] = scmd->sdb.length;
+ scmd->cmd_len = COMMAND_SIZE(scmd->cmnd[0]);
+diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
+index b1a263137a23..448ebdaa3d69 100644
+--- a/drivers/scsi/scsi_lib.c
++++ b/drivers/scsi/scsi_lib.c
+@@ -583,7 +583,7 @@ static struct scatterlist *scsi_sg_alloc(unsigned int nents, gfp_t gfp_mask)
+
+ static void scsi_free_sgtable(struct scsi_data_buffer *sdb, bool mq)
+ {
+- if (mq && sdb->table.nents <= SCSI_MAX_SG_SEGMENTS)
++ if (mq && sdb->table.orig_nents <= SCSI_MAX_SG_SEGMENTS)
+ return;
+ __sg_free_table(&sdb->table, SCSI_MAX_SG_SEGMENTS, mq, scsi_sg_free);
+ }
+@@ -597,8 +597,8 @@ static int scsi_alloc_sgtable(struct scsi_data_buffer *sdb, int nents, bool mq)
+
+ if (mq) {
+ if (nents <= SCSI_MAX_SG_SEGMENTS) {
+- sdb->table.nents = nents;
+- sg_init_table(sdb->table.sgl, sdb->table.nents);
++ sdb->table.nents = sdb->table.orig_nents = nents;
++ sg_init_table(sdb->table.sgl, nents);
+ return 0;
+ }
+ first_chunk = sdb->table.sgl;
+diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
+index 1ac38e73df7e..9ad41168d26d 100644
+--- a/drivers/scsi/scsi_sysfs.c
++++ b/drivers/scsi/scsi_sysfs.c
+@@ -859,7 +859,7 @@ sdev_store_queue_depth(struct device *dev, struct device_attribute *attr,
+
+ depth = simple_strtoul(buf, NULL, 0);
+
+- if (depth < 1 || depth > sht->can_queue)
++ if (depth < 1 || depth > sdev->host->can_queue)
+ return -EINVAL;
+
+ retval = sht->change_queue_depth(sdev, depth);
+diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
+index 9a1c34205254..525ab4c1f306 100644
+--- a/drivers/scsi/st.c
++++ b/drivers/scsi/st.c
+@@ -1274,9 +1274,9 @@ static int st_open(struct inode *inode, struct file *filp)
+ spin_lock(&st_use_lock);
+ STp->in_use = 0;
+ spin_unlock(&st_use_lock);
+- scsi_tape_put(STp);
+ if (resumed)
+ scsi_autopm_put_device(STp->device);
++ scsi_tape_put(STp);
+ return retval;
+
+ }
+diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c
+index 788e2b176a4f..acce90ac7371 100644
+--- a/drivers/spi/spi-img-spfi.c
++++ b/drivers/spi/spi-img-spfi.c
+@@ -40,6 +40,7 @@
+ #define SPFI_CONTROL_SOFT_RESET BIT(11)
+ #define SPFI_CONTROL_SEND_DMA BIT(10)
+ #define SPFI_CONTROL_GET_DMA BIT(9)
++#define SPFI_CONTROL_SE BIT(8)
+ #define SPFI_CONTROL_TMODE_SHIFT 5
+ #define SPFI_CONTROL_TMODE_MASK 0x7
+ #define SPFI_CONTROL_TMODE_SINGLE 0
+@@ -491,6 +492,7 @@ static void img_spfi_config(struct spi_master *master, struct spi_device *spi,
+ else if (xfer->tx_nbits == SPI_NBITS_QUAD &&
+ xfer->rx_nbits == SPI_NBITS_QUAD)
+ val |= SPFI_CONTROL_TMODE_QUAD << SPFI_CONTROL_TMODE_SHIFT;
++ val |= SPFI_CONTROL_SE;
+ spfi_writel(spfi, val, SPFI_CONTROL);
+ }
+
+diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
+index f08e812b2984..412b9c86b997 100644
+--- a/drivers/spi/spi-imx.c
++++ b/drivers/spi/spi-imx.c
+@@ -201,8 +201,9 @@ static bool spi_imx_can_dma(struct spi_master *master, struct spi_device *spi,
+ {
+ struct spi_imx_data *spi_imx = spi_master_get_devdata(master);
+
+- if (spi_imx->dma_is_inited && (transfer->len > spi_imx->rx_wml)
+- && (transfer->len > spi_imx->tx_wml))
++ if (spi_imx->dma_is_inited
++ && transfer->len > spi_imx->rx_wml * sizeof(u32)
++ && transfer->len > spi_imx->tx_wml * sizeof(u32))
+ return true;
+ return false;
+ }
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 74e6114ff18f..305a5cbc099a 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -4001,7 +4001,13 @@ get_immediate:
+ }
+
+ transport_err:
+- iscsit_take_action_for_connection_exit(conn);
++ /*
++ * Avoid the normal connection failure code-path if this connection
++ * is still within LOGIN mode, and iscsi_np process context is
++ * responsible for cleaning up the early connection failure.
++ */
++ if (conn->conn_state != TARG_CONN_STATE_IN_LOGIN)
++ iscsit_take_action_for_connection_exit(conn);
+ out:
+ return 0;
+ }
+@@ -4093,7 +4099,7 @@ reject:
+
+ int iscsi_target_rx_thread(void *arg)
+ {
+- int ret;
++ int ret, rc;
+ u8 buffer[ISCSI_HDR_LEN], opcode;
+ u32 checksum = 0, digest = 0;
+ struct iscsi_conn *conn = arg;
+@@ -4103,10 +4109,16 @@ int iscsi_target_rx_thread(void *arg)
+ * connection recovery / failure event can be triggered externally.
+ */
+ allow_signal(SIGINT);
++ /*
++ * Wait for iscsi_post_login_handler() to complete before allowing
++ * incoming iscsi/tcp socket I/O, and/or failing the connection.
++ */
++ rc = wait_for_completion_interruptible(&conn->rx_login_comp);
++ if (rc < 0)
++ return 0;
+
+ if (conn->conn_transport->transport_type == ISCSI_INFINIBAND) {
+ struct completion comp;
+- int rc;
+
+ init_completion(&comp);
+ rc = wait_for_completion_interruptible(&comp);
+@@ -4543,7 +4555,18 @@ static void iscsit_logout_post_handler_closesession(
+ struct iscsi_conn *conn)
+ {
+ struct iscsi_session *sess = conn->sess;
+- int sleep = cmpxchg(&conn->tx_thread_active, true, false);
++ int sleep = 1;
++ /*
++ * Traditional iscsi/tcp will invoke this logic from TX thread
++ * context during session logout, so clear tx_thread_active and
++ * sleep if iscsit_close_connection() has not already occured.
++ *
++ * Since iser-target invokes this logic from it's own workqueue,
++ * always sleep waiting for RX/TX thread shutdown to complete
++ * within iscsit_close_connection().
++ */
++ if (conn->conn_transport->transport_type == ISCSI_TCP)
++ sleep = cmpxchg(&conn->tx_thread_active, true, false);
+
+ atomic_set(&conn->conn_logout_remove, 0);
+ complete(&conn->conn_logout_comp);
+@@ -4557,7 +4580,10 @@ static void iscsit_logout_post_handler_closesession(
+ static void iscsit_logout_post_handler_samecid(
+ struct iscsi_conn *conn)
+ {
+- int sleep = cmpxchg(&conn->tx_thread_active, true, false);
++ int sleep = 1;
++
++ if (conn->conn_transport->transport_type == ISCSI_TCP)
++ sleep = cmpxchg(&conn->tx_thread_active, true, false);
+
+ atomic_set(&conn->conn_logout_remove, 0);
+ complete(&conn->conn_logout_comp);
+@@ -4776,6 +4802,7 @@ int iscsit_release_sessions_for_tpg(struct iscsi_portal_group *tpg, int force)
+ struct iscsi_session *sess;
+ struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
+ struct se_session *se_sess, *se_sess_tmp;
++ LIST_HEAD(free_list);
+ int session_count = 0;
+
+ spin_lock_bh(&se_tpg->session_lock);
+@@ -4797,14 +4824,17 @@ int iscsit_release_sessions_for_tpg(struct iscsi_portal_group *tpg, int force)
+ }
+ atomic_set(&sess->session_reinstatement, 1);
+ spin_unlock(&sess->conn_lock);
+- spin_unlock_bh(&se_tpg->session_lock);
+
+- iscsit_free_session(sess);
+- spin_lock_bh(&se_tpg->session_lock);
++ list_move_tail(&se_sess->sess_list, &free_list);
++ }
++ spin_unlock_bh(&se_tpg->session_lock);
++
++ list_for_each_entry_safe(se_sess, se_sess_tmp, &free_list, sess_list) {
++ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+
++ iscsit_free_session(sess);
+ session_count++;
+ }
+- spin_unlock_bh(&se_tpg->session_lock);
+
+ pr_debug("Released %d iSCSI Session(s) from Target Portal"
+ " Group: %hu\n", session_count, tpg->tpgt);
+diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
+index 70d799dfab03..c3bccaddb592 100644
+--- a/drivers/target/iscsi/iscsi_target_login.c
++++ b/drivers/target/iscsi/iscsi_target_login.c
+@@ -82,6 +82,7 @@ static struct iscsi_login *iscsi_login_init_conn(struct iscsi_conn *conn)
+ init_completion(&conn->conn_logout_comp);
+ init_completion(&conn->rx_half_close_comp);
+ init_completion(&conn->tx_half_close_comp);
++ init_completion(&conn->rx_login_comp);
+ spin_lock_init(&conn->cmd_lock);
+ spin_lock_init(&conn->conn_usage_lock);
+ spin_lock_init(&conn->immed_queue_lock);
+@@ -699,7 +700,7 @@ static void iscsi_post_login_start_timers(struct iscsi_conn *conn)
+ iscsit_start_nopin_timer(conn);
+ }
+
+-static int iscsit_start_kthreads(struct iscsi_conn *conn)
++int iscsit_start_kthreads(struct iscsi_conn *conn)
+ {
+ int ret = 0;
+
+@@ -734,6 +735,7 @@ static int iscsit_start_kthreads(struct iscsi_conn *conn)
+
+ return 0;
+ out_tx:
++ send_sig(SIGINT, conn->tx_thread, 1);
+ kthread_stop(conn->tx_thread);
+ conn->tx_thread_active = false;
+ out_bitmap:
+@@ -744,7 +746,7 @@ out_bitmap:
+ return ret;
+ }
+
+-int iscsi_post_login_handler(
++void iscsi_post_login_handler(
+ struct iscsi_np *np,
+ struct iscsi_conn *conn,
+ u8 zero_tsih)
+@@ -754,7 +756,6 @@ int iscsi_post_login_handler(
+ struct se_session *se_sess = sess->se_sess;
+ struct iscsi_portal_group *tpg = sess->tpg;
+ struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
+- int rc;
+
+ iscsit_inc_conn_usage_count(conn);
+
+@@ -795,10 +796,6 @@ int iscsi_post_login_handler(
+ sess->sess_ops->InitiatorName);
+ spin_unlock_bh(&sess->conn_lock);
+
+- rc = iscsit_start_kthreads(conn);
+- if (rc)
+- return rc;
+-
+ iscsi_post_login_start_timers(conn);
+ /*
+ * Determine CPU mask to ensure connection's RX and TX kthreads
+@@ -807,15 +804,20 @@ int iscsi_post_login_handler(
+ iscsit_thread_get_cpumask(conn);
+ conn->conn_rx_reset_cpumask = 1;
+ conn->conn_tx_reset_cpumask = 1;
+-
++ /*
++ * Wakeup the sleeping iscsi_target_rx_thread() now that
++ * iscsi_conn is in TARG_CONN_STATE_LOGGED_IN state.
++ */
++ complete(&conn->rx_login_comp);
+ iscsit_dec_conn_usage_count(conn);
++
+ if (stop_timer) {
+ spin_lock_bh(&se_tpg->session_lock);
+ iscsit_stop_time2retain_timer(sess);
+ spin_unlock_bh(&se_tpg->session_lock);
+ }
+ iscsit_dec_session_usage_count(sess);
+- return 0;
++ return;
+ }
+
+ iscsi_set_session_parameters(sess->sess_ops, conn->param_list, 1);
+@@ -856,10 +858,6 @@ int iscsi_post_login_handler(
+ " iSCSI Target Portal Group: %hu\n", tpg->nsessions, tpg->tpgt);
+ spin_unlock_bh(&se_tpg->session_lock);
+
+- rc = iscsit_start_kthreads(conn);
+- if (rc)
+- return rc;
+-
+ iscsi_post_login_start_timers(conn);
+ /*
+ * Determine CPU mask to ensure connection's RX and TX kthreads
+@@ -868,10 +866,12 @@ int iscsi_post_login_handler(
+ iscsit_thread_get_cpumask(conn);
+ conn->conn_rx_reset_cpumask = 1;
+ conn->conn_tx_reset_cpumask = 1;
+-
++ /*
++ * Wakeup the sleeping iscsi_target_rx_thread() now that
++ * iscsi_conn is in TARG_CONN_STATE_LOGGED_IN state.
++ */
++ complete(&conn->rx_login_comp);
+ iscsit_dec_conn_usage_count(conn);
+-
+- return 0;
+ }
+
+ static void iscsi_handle_login_thread_timeout(unsigned long data)
+@@ -1436,23 +1436,12 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
+ if (ret < 0)
+ goto new_sess_out;
+
+- if (!conn->sess) {
+- pr_err("struct iscsi_conn session pointer is NULL!\n");
+- goto new_sess_out;
+- }
+-
+ iscsi_stop_login_thread_timer(np);
+
+- if (signal_pending(current))
+- goto new_sess_out;
+-
+ if (ret == 1) {
+ tpg_np = conn->tpg_np;
+
+- ret = iscsi_post_login_handler(np, conn, zero_tsih);
+- if (ret < 0)
+- goto new_sess_out;
+-
++ iscsi_post_login_handler(np, conn, zero_tsih);
+ iscsit_deaccess_np(np, tpg, tpg_np);
+ }
+
+diff --git a/drivers/target/iscsi/iscsi_target_login.h b/drivers/target/iscsi/iscsi_target_login.h
+index 29d098324b7f..55cbf4533544 100644
+--- a/drivers/target/iscsi/iscsi_target_login.h
++++ b/drivers/target/iscsi/iscsi_target_login.h
+@@ -12,7 +12,8 @@ extern int iscsit_accept_np(struct iscsi_np *, struct iscsi_conn *);
+ extern int iscsit_get_login_rx(struct iscsi_conn *, struct iscsi_login *);
+ extern int iscsit_put_login_tx(struct iscsi_conn *, struct iscsi_login *, u32);
+ extern void iscsit_free_conn(struct iscsi_np *, struct iscsi_conn *);
+-extern int iscsi_post_login_handler(struct iscsi_np *, struct iscsi_conn *, u8);
++extern int iscsit_start_kthreads(struct iscsi_conn *);
++extern void iscsi_post_login_handler(struct iscsi_np *, struct iscsi_conn *, u8);
+ extern void iscsi_target_login_sess_out(struct iscsi_conn *, struct iscsi_np *,
+ bool, bool);
+ extern int iscsi_target_login_thread(void *);
+diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
+index 8c02fa34716f..f9cde9141836 100644
+--- a/drivers/target/iscsi/iscsi_target_nego.c
++++ b/drivers/target/iscsi/iscsi_target_nego.c
+@@ -17,6 +17,7 @@
+ ******************************************************************************/
+
+ #include <linux/ctype.h>
++#include <linux/kthread.h>
+ #include <scsi/iscsi_proto.h>
+ #include <target/target_core_base.h>
+ #include <target/target_core_fabric.h>
+@@ -361,10 +362,24 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log
+ ntohl(login_rsp->statsn), login->rsp_length);
+
+ padding = ((-login->rsp_length) & 3);
++ /*
++ * Before sending the last login response containing the transition
++ * bit for full-feature-phase, go ahead and start up TX/RX threads
++ * now to avoid potential resource allocation failures after the
++ * final login response has been sent.
++ */
++ if (login->login_complete) {
++ int rc = iscsit_start_kthreads(conn);
++ if (rc) {
++ iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
++ ISCSI_LOGIN_STATUS_NO_RESOURCES);
++ return -1;
++ }
++ }
+
+ if (conn->conn_transport->iscsit_put_login_tx(conn, login,
+ login->rsp_length + padding) < 0)
+- return -1;
++ goto err;
+
+ login->rsp_length = 0;
+ mutex_lock(&sess->cmdsn_mutex);
+@@ -373,6 +388,23 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log
+ mutex_unlock(&sess->cmdsn_mutex);
+
+ return 0;
++
++err:
++ if (login->login_complete) {
++ if (conn->rx_thread && conn->rx_thread_active) {
++ send_sig(SIGINT, conn->rx_thread, 1);
++ kthread_stop(conn->rx_thread);
++ }
++ if (conn->tx_thread && conn->tx_thread_active) {
++ send_sig(SIGINT, conn->tx_thread, 1);
++ kthread_stop(conn->tx_thread);
++ }
++ spin_lock(&iscsit_global->ts_bitmap_lock);
++ bitmap_release_region(iscsit_global->ts_bitmap, conn->bitmap_id,
++ get_order(1));
++ spin_unlock(&iscsit_global->ts_bitmap_lock);
++ }
++ return -1;
+ }
+
+ static void iscsi_target_sk_data_ready(struct sock *sk)
+diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
+index 396344cb011f..16ed0b6c7f9c 100644
+--- a/drivers/tty/n_tty.c
++++ b/drivers/tty/n_tty.c
+@@ -1108,19 +1108,29 @@ static void eraser(unsigned char c, struct tty_struct *tty)
+ * Locking: ctrl_lock
+ */
+
+-static void isig(int sig, struct tty_struct *tty)
++static void __isig(int sig, struct tty_struct *tty)
+ {
+- struct n_tty_data *ldata = tty->disc_data;
+ struct pid *tty_pgrp = tty_get_pgrp(tty);
+ if (tty_pgrp) {
+ kill_pgrp(tty_pgrp, sig, 1);
+ put_pid(tty_pgrp);
+ }
++}
+
+- if (!L_NOFLSH(tty)) {
++static void isig(int sig, struct tty_struct *tty)
++{
++ struct n_tty_data *ldata = tty->disc_data;
++
++ if (L_NOFLSH(tty)) {
++ /* signal only */
++ __isig(sig, tty);
++
++ } else { /* signal and flush */
+ up_read(&tty->termios_rwsem);
+ down_write(&tty->termios_rwsem);
+
++ __isig(sig, tty);
++
+ /* clear echo buffer */
+ mutex_lock(&ldata->output_lock);
+ ldata->echo_head = ldata->echo_tail = 0;
+diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
+index 88250395b0ce..01aa52f574e5 100644
+--- a/drivers/tty/serial/imx.c
++++ b/drivers/tty/serial/imx.c
+@@ -1132,11 +1132,6 @@ static int imx_startup(struct uart_port *port)
+ while (!(readl(sport->port.membase + UCR2) & UCR2_SRST) && (--i > 0))
+ udelay(1);
+
+- /* Can we enable the DMA support? */
+- if (is_imx6q_uart(sport) && !uart_console(port) &&
+- !sport->dma_is_inited)
+- imx_uart_dma_init(sport);
+-
+ spin_lock_irqsave(&sport->port.lock, flags);
+
+ /*
+@@ -1145,9 +1140,6 @@ static int imx_startup(struct uart_port *port)
+ writel(USR1_RTSD, sport->port.membase + USR1);
+ writel(USR2_ORE, sport->port.membase + USR2);
+
+- if (sport->dma_is_inited && !sport->dma_is_enabled)
+- imx_enable_dma(sport);
+-
+ temp = readl(sport->port.membase + UCR1);
+ temp |= UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN;
+
+@@ -1318,6 +1310,11 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
+ } else {
+ ucr2 |= UCR2_CTSC;
+ }
++
++ /* Can we enable the DMA support? */
++ if (is_imx6q_uart(sport) && !uart_console(port)
++ && !sport->dma_is_inited)
++ imx_uart_dma_init(sport);
+ } else {
+ termios->c_cflag &= ~CRTSCTS;
+ }
+@@ -1434,6 +1431,8 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
+ if (UART_ENABLE_MS(&sport->port, termios->c_cflag))
+ imx_enable_ms(&sport->port);
+
++ if (sport->dma_is_inited && !sport->dma_is_enabled)
++ imx_enable_dma(sport);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+ }
+
+diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
+index 0b7bb12dfc68..ec540445bb71 100644
+--- a/drivers/tty/serial/serial_core.c
++++ b/drivers/tty/serial/serial_core.c
+@@ -1409,7 +1409,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
+ mutex_lock(&port->mutex);
+ uart_shutdown(tty, state);
+ tty_port_tty_set(port, NULL);
+- tty->closing = 0;
++
+ spin_lock_irqsave(&port->lock, flags);
+
+ if (port->blocked_open) {
+@@ -1435,6 +1435,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
+ mutex_unlock(&port->mutex);
+
+ tty_ldisc_flush(tty);
++ tty->closing = 0;
+ }
+
+ static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
+diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
+index 0827d7c96527..ee07ba41c8db 100644
+--- a/drivers/usb/host/xhci-hub.c
++++ b/drivers/usb/host/xhci-hub.c
+@@ -484,10 +484,13 @@ static void xhci_hub_report_usb3_link_state(struct xhci_hcd *xhci,
+ u32 pls = status_reg & PORT_PLS_MASK;
+
+ /* resume state is a xHCI internal state.
+- * Do not report it to usb core.
++ * Do not report it to usb core, instead, pretend to be U3,
++ * thus usb core knows it's not ready for transfer
+ */
+- if (pls == XDEV_RESUME)
++ if (pls == XDEV_RESUME) {
++ *status |= USB_SS_PORT_LS_U3;
+ return;
++ }
+
+ /* When the CAS bit is set then warm reset
+ * should be performed on port
+@@ -588,7 +591,14 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
+ status |= USB_PORT_STAT_C_RESET << 16;
+ /* USB3.0 only */
+ if (hcd->speed == HCD_USB3) {
+- if ((raw_port_status & PORT_PLC))
++ /* Port link change with port in resume state should not be
++ * reported to usbcore, as this is an internal state to be
++ * handled by xhci driver. Reporting PLC to usbcore may
++ * cause usbcore clearing PLC first and port change event
++ * irq won't be generated.
++ */
++ if ((raw_port_status & PORT_PLC) &&
++ (raw_port_status & PORT_PLS_MASK) != XDEV_RESUME)
+ status |= USB_PORT_STAT_C_LINK_STATE << 16;
+ if ((raw_port_status & PORT_WRC))
+ status |= USB_PORT_STAT_C_BH_RESET << 16;
+@@ -1120,10 +1130,10 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
+ spin_lock_irqsave(&xhci->lock, flags);
+
+ if (hcd->self.root_hub->do_remote_wakeup) {
+- if (bus_state->resuming_ports) {
++ if (bus_state->resuming_ports || /* USB2 */
++ bus_state->port_remote_wakeup) { /* USB3 */
+ spin_unlock_irqrestore(&xhci->lock, flags);
+- xhci_dbg(xhci, "suspend failed because "
+- "a port is resuming\n");
++ xhci_dbg(xhci, "suspend failed because a port is resuming\n");
+ return -EBUSY;
+ }
+ }
+diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
+index 7d34cbfaf373..d095677a0702 100644
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -1546,6 +1546,9 @@ static void handle_port_status(struct xhci_hcd *xhci,
+ usb_hcd_resume_root_hub(hcd);
+ }
+
++ if (hcd->speed == HCD_USB3 && (temp & PORT_PLS_MASK) == XDEV_INACTIVE)
++ bus_state->port_remote_wakeup &= ~(1 << faked_port_index);
++
+ if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_RESUME) {
+ xhci_dbg(xhci, "port resume event for port %d\n", port_id);
+
+diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
+index 36bf089b708f..c502c2277aeb 100644
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -3453,6 +3453,9 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
+ return -EINVAL;
+ }
+
++ if (virt_dev->tt_info)
++ old_active_eps = virt_dev->tt_info->active_eps;
++
+ if (virt_dev->udev != udev) {
+ /* If the virt_dev and the udev does not match, this virt_dev
+ * may belong to another udev.
+diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
+index 6977f8491fa7..0f26dd2697b6 100644
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -285,6 +285,7 @@ struct xhci_op_regs {
+ #define XDEV_U0 (0x0 << 5)
+ #define XDEV_U2 (0x2 << 5)
+ #define XDEV_U3 (0x3 << 5)
++#define XDEV_INACTIVE (0x6 << 5)
+ #define XDEV_RESUME (0xf << 5)
+ /* true: port has power (see HCC_PPC) */
+ #define PORT_POWER (1 << 9)
+diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
+index caf188800c67..87898ca2ed17 100644
+--- a/drivers/usb/storage/unusual_devs.h
++++ b/drivers/usb/storage/unusual_devs.h
+@@ -2065,6 +2065,18 @@ UNUSUAL_DEV( 0x1908, 0x3335, 0x0200, 0x0200,
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_NO_READ_DISC_INFO ),
+
++/* Reported by Oliver Neukum <oneukum@suse.com>
++ * This device morphes spontaneously into another device if the access
++ * pattern of Windows isn't followed. Thus writable media would be dirty
++ * if the initial instance is used. So the device is limited to its
++ * virtual CD.
++ * And yes, the concept that BCD goes up to 9 is not heeded */
++UNUSUAL_DEV( 0x19d2, 0x1225, 0x0000, 0xffff,
++ "ZTE,Incorporated",
++ "ZTE WCDMA Technologies MSM",
++ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
++ US_FL_SINGLE_LUN ),
++
+ /* Reported by Sven Geggus <sven-usbst@geggus.net>
+ * This encrypted pen drive returns bogus data for the initial READ(10).
+ */
+diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
+index 2ee28266fd07..fa49d3294cd5 100644
+--- a/drivers/vhost/vhost.c
++++ b/drivers/vhost/vhost.c
+@@ -886,6 +886,7 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp)
+ }
+ if (eventfp != d->log_file) {
+ filep = d->log_file;
++ d->log_file = eventfp;
+ ctx = d->log_ctx;
+ d->log_ctx = eventfp ?
+ eventfd_ctx_fileget(eventfp) : NULL;
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 50bb3c207621..5d03eb0ec0ac 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -642,7 +642,7 @@ static inline bool fast_dput(struct dentry *dentry)
+
+ /*
+ * If we have a d_op->d_delete() operation, we sould not
+- * let the dentry count go to zero, so use "put__or_lock".
++ * let the dentry count go to zero, so use "put_or_lock".
+ */
+ if (unlikely(dentry->d_flags & DCACHE_OP_DELETE))
+ return lockref_put_or_lock(&dentry->d_lockref);
+@@ -697,7 +697,7 @@ static inline bool fast_dput(struct dentry *dentry)
+ */
+ smp_rmb();
+ d_flags = ACCESS_ONCE(dentry->d_flags);
+- d_flags &= DCACHE_REFERENCED | DCACHE_LRU_LIST;
++ d_flags &= DCACHE_REFERENCED | DCACHE_LRU_LIST | DCACHE_DISCONNECTED;
+
+ /* Nothing to do? Dropping the reference was all we needed? */
+ if (d_flags == (DCACHE_REFERENCED | DCACHE_LRU_LIST) && !d_unhashed(dentry))
+@@ -776,6 +776,9 @@ repeat:
+ if (unlikely(d_unhashed(dentry)))
+ goto kill_it;
+
++ if (unlikely(dentry->d_flags & DCACHE_DISCONNECTED))
++ goto kill_it;
++
+ if (unlikely(dentry->d_flags & DCACHE_OP_DELETE)) {
+ if (dentry->d_op->d_delete(dentry))
+ goto kill_it;
+diff --git a/fs/namespace.c b/fs/namespace.c
+index 02c6875dd945..fce3cc1a3fa7 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -1350,6 +1350,36 @@ enum umount_tree_flags {
+ UMOUNT_PROPAGATE = 2,
+ UMOUNT_CONNECTED = 4,
+ };
++
++static bool disconnect_mount(struct mount *mnt, enum umount_tree_flags how)
++{
++ /* Leaving mounts connected is only valid for lazy umounts */
++ if (how & UMOUNT_SYNC)
++ return true;
++
++ /* A mount without a parent has nothing to be connected to */
++ if (!mnt_has_parent(mnt))
++ return true;
++
++ /* Because the reference counting rules change when mounts are
++ * unmounted and connected, umounted mounts may not be
++ * connected to mounted mounts.
++ */
++ if (!(mnt->mnt_parent->mnt.mnt_flags & MNT_UMOUNT))
++ return true;
++
++ /* Has it been requested that the mount remain connected? */
++ if (how & UMOUNT_CONNECTED)
++ return false;
++
++ /* Is the mount locked such that it needs to remain connected? */
++ if (IS_MNT_LOCKED(mnt))
++ return false;
++
++ /* By default disconnect the mount */
++ return true;
++}
++
+ /*
+ * mount_lock must be held
+ * namespace_sem must be held for write
+@@ -1387,10 +1417,7 @@ static void umount_tree(struct mount *mnt, enum umount_tree_flags how)
+ if (how & UMOUNT_SYNC)
+ p->mnt.mnt_flags |= MNT_SYNC_UMOUNT;
+
+- disconnect = !(((how & UMOUNT_CONNECTED) &&
+- mnt_has_parent(p) &&
+- (p->mnt_parent->mnt.mnt_flags & MNT_UMOUNT)) ||
+- IS_MNT_LOCKED_AND_LAZY(p));
++ disconnect = disconnect_mount(p, how);
+
+ pin_insert_group(&p->mnt_umount, &p->mnt_parent->mnt,
+ disconnect ? &unmounted : NULL);
+@@ -1527,11 +1554,8 @@ void __detach_mounts(struct dentry *dentry)
+ while (!hlist_empty(&mp->m_list)) {
+ mnt = hlist_entry(mp->m_list.first, struct mount, mnt_mp_list);
+ if (mnt->mnt.mnt_flags & MNT_UMOUNT) {
+- struct mount *p, *tmp;
+- list_for_each_entry_safe(p, tmp, &mnt->mnt_mounts, mnt_child) {
+- hlist_add_head(&p->mnt_umount.s_list, &unmounted);
+- umount_mnt(p);
+- }
++ hlist_add_head(&mnt->mnt_umount.s_list, &unmounted);
++ umount_mnt(mnt);
+ }
+ else umount_tree(mnt, UMOUNT_CONNECTED);
+ }
+diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
+index f734562c6d24..5d25b9d97c29 100644
+--- a/fs/nfs/inode.c
++++ b/fs/nfs/inode.c
+@@ -1242,9 +1242,11 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
+ if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
+ cur_size = i_size_read(inode);
+ new_isize = nfs_size_to_loff_t(fattr->size);
+- if (cur_size != new_isize && nfsi->nrequests == 0)
++ if (cur_size != new_isize)
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+ }
++ if (nfsi->nrequests != 0)
++ invalid &= ~NFS_INO_REVAL_PAGECACHE;
+
+ /* Have any file permissions changed? */
+ if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
+@@ -1682,8 +1684,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ invalid |= NFS_INO_INVALID_ATTR
+ | NFS_INO_INVALID_DATA
+ | NFS_INO_INVALID_ACCESS
+- | NFS_INO_INVALID_ACL
+- | NFS_INO_REVAL_PAGECACHE;
++ | NFS_INO_INVALID_ACL;
+ if (S_ISDIR(inode->i_mode))
+ nfs_force_lookup_revalidate(inode);
+ inode->i_version = fattr->change_attr;
+@@ -1715,7 +1716,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
+ if ((nfsi->nrequests == 0) || new_isize > cur_isize) {
+ i_size_write(inode, new_isize);
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
+- invalid &= ~NFS_INO_REVAL_PAGECACHE;
+ }
+ dprintk("NFS: isize change on server for file %s/%ld "
+ "(%Ld to %Ld)\n",
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index 55e1e3af23a3..d3f205126609 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -1204,12 +1204,15 @@ static bool nfs_need_update_open_stateid(struct nfs4_state *state,
+
+ static void nfs_resync_open_stateid_locked(struct nfs4_state *state)
+ {
++ if (!(state->n_wronly || state->n_rdonly || state->n_rdwr))
++ return;
+ if (state->n_wronly)
+ set_bit(NFS_O_WRONLY_STATE, &state->flags);
+ if (state->n_rdonly)
+ set_bit(NFS_O_RDONLY_STATE, &state->flags);
+ if (state->n_rdwr)
+ set_bit(NFS_O_RDWR_STATE, &state->flags);
++ set_bit(NFS_OPEN_STATE, &state->flags);
+ }
+
+ static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
+diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
+index 282b39369510..7b4552678536 100644
+--- a/fs/nfs/pagelist.c
++++ b/fs/nfs/pagelist.c
+@@ -1110,8 +1110,11 @@ static int nfs_do_recoalesce(struct nfs_pageio_descriptor *desc)
+ nfs_list_remove_request(req);
+ if (__nfs_pageio_add_request(desc, req))
+ continue;
+- if (desc->pg_error < 0)
++ if (desc->pg_error < 0) {
++ list_splice_tail(&head, &mirror->pg_list);
++ mirror->pg_recoalesce = 1;
+ return 0;
++ }
+ break;
+ }
+ } while (mirror->pg_recoalesce);
+diff --git a/fs/pnode.h b/fs/pnode.h
+index 7114ce6e6b9e..0fcdbe7ca648 100644
+--- a/fs/pnode.h
++++ b/fs/pnode.h
+@@ -20,8 +20,6 @@
+ #define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
+ #define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)
+ #define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
+-#define IS_MNT_LOCKED_AND_LAZY(m) \
+- (((m)->mnt.mnt_flags & (MNT_LOCKED|MNT_SYNC_UMOUNT)) == MNT_LOCKED)
+
+ #define CL_EXPIRE 0x01
+ #define CL_SLAVE 0x02
+diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
+index 20de88d1bf86..dd714037c322 100644
+--- a/fs/xfs/libxfs/xfs_attr_remote.c
++++ b/fs/xfs/libxfs/xfs_attr_remote.c
+@@ -159,11 +159,10 @@ xfs_attr3_rmt_write_verify(
+ struct xfs_buf *bp)
+ {
+ struct xfs_mount *mp = bp->b_target->bt_mount;
+- struct xfs_buf_log_item *bip = bp->b_fspriv;
++ int blksize = mp->m_attr_geo->blksize;
+ char *ptr;
+ int len;
+ xfs_daddr_t bno;
+- int blksize = mp->m_attr_geo->blksize;
+
+ /* no verification of non-crc buffers */
+ if (!xfs_sb_version_hascrc(&mp->m_sb))
+@@ -175,16 +174,22 @@ xfs_attr3_rmt_write_verify(
+ ASSERT(len >= blksize);
+
+ while (len > 0) {
++ struct xfs_attr3_rmt_hdr *rmt = (struct xfs_attr3_rmt_hdr *)ptr;
++
+ if (!xfs_attr3_rmt_verify(mp, ptr, blksize, bno)) {
+ xfs_buf_ioerror(bp, -EFSCORRUPTED);
+ xfs_verifier_error(bp);
+ return;
+ }
+- if (bip) {
+- struct xfs_attr3_rmt_hdr *rmt;
+
+- rmt = (struct xfs_attr3_rmt_hdr *)ptr;
+- rmt->rm_lsn = cpu_to_be64(bip->bli_item.li_lsn);
++ /*
++ * Ensure we aren't writing bogus LSNs to disk. See
++ * xfs_attr3_rmt_hdr_set() for the explanation.
++ */
++ if (rmt->rm_lsn != cpu_to_be64(NULLCOMMITLSN)) {
++ xfs_buf_ioerror(bp, -EFSCORRUPTED);
++ xfs_verifier_error(bp);
++ return;
+ }
+ xfs_update_cksum(ptr, blksize, XFS_ATTR3_RMT_CRC_OFF);
+
+@@ -221,6 +226,18 @@ xfs_attr3_rmt_hdr_set(
+ rmt->rm_owner = cpu_to_be64(ino);
+ rmt->rm_blkno = cpu_to_be64(bno);
+
++ /*
++ * Remote attribute blocks are written synchronously, so we don't
++ * have an LSN that we can stamp in them that makes any sense to log
++ * recovery. To ensure that log recovery handles overwrites of these
++ * blocks sanely (i.e. once they've been freed and reallocated as some
++ * other type of metadata) we need to ensure that the LSN has a value
++ * that tells log recovery to ignore the LSN and overwrite the buffer
++ * with whatever is in it's log. To do this, we use the magic
++ * NULLCOMMITLSN to indicate that the LSN is invalid.
++ */
++ rmt->rm_lsn = cpu_to_be64(NULLCOMMITLSN);
++
+ return sizeof(struct xfs_attr3_rmt_hdr);
+ }
+
+@@ -434,14 +451,21 @@ xfs_attr_rmtval_set(
+
+ /*
+ * Allocate a single extent, up to the size of the value.
++ *
++ * Note that we have to consider this a data allocation as we
++ * write the remote attribute without logging the contents.
++ * Hence we must ensure that we aren't using blocks that are on
++ * the busy list so that we don't overwrite blocks which have
++ * recently been freed but their transactions are not yet
++ * committed to disk. If we overwrite the contents of a busy
++ * extent and then crash then the block may not contain the
++ * correct metadata after log recovery occurs.
+ */
+ xfs_bmap_init(args->flist, args->firstblock);
+ nmap = 1;
+ error = xfs_bmapi_write(args->trans, dp, (xfs_fileoff_t)lblkno,
+- blkcnt,
+- XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA,
+- args->firstblock, args->total, &map, &nmap,
+- args->flist);
++ blkcnt, XFS_BMAPI_ATTRFORK, args->firstblock,
++ args->total, &map, &nmap, args->flist);
+ if (!error) {
+ error = xfs_bmap_finish(&args->trans, args->flist,
+ &committed);
+diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
+index 4f5784f85a5b..a5d03396dda0 100644
+--- a/fs/xfs/xfs_log_recover.c
++++ b/fs/xfs/xfs_log_recover.c
+@@ -1887,9 +1887,14 @@ xlog_recover_get_buf_lsn(
+ uuid = &((struct xfs_dir3_blk_hdr *)blk)->uuid;
+ break;
+ case XFS_ATTR3_RMT_MAGIC:
+- lsn = be64_to_cpu(((struct xfs_attr3_rmt_hdr *)blk)->rm_lsn);
+- uuid = &((struct xfs_attr3_rmt_hdr *)blk)->rm_uuid;
+- break;
++ /*
++ * Remote attr blocks are written synchronously, rather than
++ * being logged. That means they do not contain a valid LSN
++ * (i.e. transactionally ordered) in them, and hence any time we
++ * see a buffer to replay over the top of a remote attribute
++ * block we should simply do so.
++ */
++ goto recover_immediately;
+ case XFS_SB_MAGIC:
+ lsn = be64_to_cpu(((struct xfs_dsb *)blk)->sb_lsn);
+ uuid = &((struct xfs_dsb *)blk)->sb_uuid;
+diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h
+index b6a52a4b457a..51bb6532785c 100644
+--- a/include/linux/can/skb.h
++++ b/include/linux/can/skb.h
+@@ -27,10 +27,12 @@
+ /**
+ * struct can_skb_priv - private additional data inside CAN sk_buffs
+ * @ifindex: ifindex of the first interface the CAN frame appeared on
++ * @skbcnt: atomic counter to have an unique id together with skb pointer
+ * @cf: align to the following CAN frame at skb->data
+ */
+ struct can_skb_priv {
+ int ifindex;
++ int skbcnt;
+ struct can_frame cf[0];
+ };
+
+diff --git a/include/linux/cper.h b/include/linux/cper.h
+index 76abba4b238e..dcacb1a72e26 100644
+--- a/include/linux/cper.h
++++ b/include/linux/cper.h
+@@ -340,7 +340,27 @@ struct cper_ia_proc_ctx {
+ __u64 mm_reg_addr;
+ };
+
+-/* Memory Error Section */
++/* Old Memory Error Section UEFI 2.1, 2.2 */
++struct cper_sec_mem_err_old {
++ __u64 validation_bits;
++ __u64 error_status;
++ __u64 physical_addr;
++ __u64 physical_addr_mask;
++ __u16 node;
++ __u16 card;
++ __u16 module;
++ __u16 bank;
++ __u16 device;
++ __u16 row;
++ __u16 column;
++ __u16 bit_pos;
++ __u64 requestor_id;
++ __u64 responder_id;
++ __u64 target_id;
++ __u8 error_type;
++};
++
++/* Memory Error Section UEFI >= 2.3 */
+ struct cper_sec_mem_err {
+ __u64 validation_bits;
+ __u64 error_status;
+diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
+index 1da602982cf9..6cd8c0ee4b6f 100644
+--- a/include/linux/ftrace.h
++++ b/include/linux/ftrace.h
+@@ -116,6 +116,7 @@ ftrace_func_t ftrace_ops_get_func(struct ftrace_ops *ops);
+ * SAVE_REGS. If another ops with this flag set is already registered
+ * for any of the functions that this ops will be registered for, then
+ * this ops will fail to register or set_filter_ip.
++ * PID - Is affected by set_ftrace_pid (allows filtering on those pids)
+ */
+ enum {
+ FTRACE_OPS_FL_ENABLED = 1 << 0,
+@@ -132,6 +133,7 @@ enum {
+ FTRACE_OPS_FL_MODIFYING = 1 << 11,
+ FTRACE_OPS_FL_ALLOC_TRAMP = 1 << 12,
+ FTRACE_OPS_FL_IPMODIFY = 1 << 13,
++ FTRACE_OPS_FL_PID = 1 << 14,
+ };
+
+ #ifdef CONFIG_DYNAMIC_FTRACE
+@@ -159,6 +161,7 @@ struct ftrace_ops {
+ struct ftrace_ops *next;
+ unsigned long flags;
+ void *private;
++ ftrace_func_t saved_func;
+ int __percpu *disabled;
+ #ifdef CONFIG_DYNAMIC_FTRACE
+ int nr_trampolines;
+diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h
+index 54e7af301888..73abbc54063d 100644
+--- a/include/target/iscsi/iscsi_target_core.h
++++ b/include/target/iscsi/iscsi_target_core.h
+@@ -606,6 +606,7 @@ struct iscsi_conn {
+ int bitmap_id;
+ int rx_thread_active;
+ struct task_struct *rx_thread;
++ struct completion rx_login_comp;
+ int tx_thread_active;
+ struct task_struct *tx_thread;
+ /* list_head for session connection list */
+diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c
+index 9065107f083e..7a5237a1bce5 100644
+--- a/kernel/irq/resend.c
++++ b/kernel/irq/resend.c
+@@ -75,13 +75,21 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq)
+ !desc->irq_data.chip->irq_retrigger(&desc->irq_data)) {
+ #ifdef CONFIG_HARDIRQS_SW_RESEND
+ /*
+- * If the interrupt has a parent irq and runs
+- * in the thread context of the parent irq,
+- * retrigger the parent.
++ * If the interrupt is running in the thread
++ * context of the parent irq we need to be
++ * careful, because we cannot trigger it
++ * directly.
+ */
+- if (desc->parent_irq &&
+- irq_settings_is_nested_thread(desc))
++ if (irq_settings_is_nested_thread(desc)) {
++ /*
++ * If the parent_irq is valid, we
++ * retrigger the parent, otherwise we
++ * do nothing.
++ */
++ if (!desc->parent_irq)
++ return;
+ irq = desc->parent_irq;
++ }
+ /* Set it pending and activate the softirq: */
+ set_bit(irq, irqs_resend);
+ tasklet_schedule(&resend_tasklet);
+diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
+index 02bece4a99ea..eb11011b5292 100644
+--- a/kernel/trace/ftrace.c
++++ b/kernel/trace/ftrace.c
+@@ -98,6 +98,13 @@ struct ftrace_pid {
+ struct pid *pid;
+ };
+
++static bool ftrace_pids_enabled(void)
++{
++ return !list_empty(&ftrace_pids);
++}
++
++static void ftrace_update_trampoline(struct ftrace_ops *ops);
++
+ /*
+ * ftrace_disabled is set when an anomaly is discovered.
+ * ftrace_disabled is much stronger than ftrace_enabled.
+@@ -109,7 +116,6 @@ static DEFINE_MUTEX(ftrace_lock);
+ static struct ftrace_ops *ftrace_control_list __read_mostly = &ftrace_list_end;
+ static struct ftrace_ops *ftrace_ops_list __read_mostly = &ftrace_list_end;
+ ftrace_func_t ftrace_trace_function __read_mostly = ftrace_stub;
+-ftrace_func_t ftrace_pid_function __read_mostly = ftrace_stub;
+ static struct ftrace_ops global_ops;
+ static struct ftrace_ops control_ops;
+
+@@ -183,14 +189,7 @@ static void ftrace_pid_func(unsigned long ip, unsigned long parent_ip,
+ if (!test_tsk_trace_trace(current))
+ return;
+
+- ftrace_pid_function(ip, parent_ip, op, regs);
+-}
+-
+-static void set_ftrace_pid_function(ftrace_func_t func)
+-{
+- /* do not set ftrace_pid_function to itself! */
+- if (func != ftrace_pid_func)
+- ftrace_pid_function = func;
++ op->saved_func(ip, parent_ip, op, regs);
+ }
+
+ /**
+@@ -202,7 +201,6 @@ static void set_ftrace_pid_function(ftrace_func_t func)
+ void clear_ftrace_function(void)
+ {
+ ftrace_trace_function = ftrace_stub;
+- ftrace_pid_function = ftrace_stub;
+ }
+
+ static void control_ops_disable_all(struct ftrace_ops *ops)
+@@ -436,6 +434,12 @@ static int __register_ftrace_function(struct ftrace_ops *ops)
+ } else
+ add_ftrace_ops(&ftrace_ops_list, ops);
+
++ /* Always save the function, and reset at unregistering */
++ ops->saved_func = ops->func;
++
++ if (ops->flags & FTRACE_OPS_FL_PID && ftrace_pids_enabled())
++ ops->func = ftrace_pid_func;
++
+ ftrace_update_trampoline(ops);
+
+ if (ftrace_enabled)
+@@ -463,15 +467,28 @@ static int __unregister_ftrace_function(struct ftrace_ops *ops)
+ if (ftrace_enabled)
+ update_ftrace_function();
+
++ ops->func = ops->saved_func;
++
+ return 0;
+ }
+
+ static void ftrace_update_pid_func(void)
+ {
++ bool enabled = ftrace_pids_enabled();
++ struct ftrace_ops *op;
++
+ /* Only do something if we are tracing something */
+ if (ftrace_trace_function == ftrace_stub)
+ return;
+
++ do_for_each_ftrace_op(op, ftrace_ops_list) {
++ if (op->flags & FTRACE_OPS_FL_PID) {
++ op->func = enabled ? ftrace_pid_func :
++ op->saved_func;
++ ftrace_update_trampoline(op);
++ }
++ } while_for_each_ftrace_op(op);
++
+ update_ftrace_function();
+ }
+
+@@ -1133,7 +1150,8 @@ static struct ftrace_ops global_ops = {
+ .local_hash.filter_hash = EMPTY_HASH,
+ INIT_OPS_HASH(global_ops)
+ .flags = FTRACE_OPS_FL_RECURSION_SAFE |
+- FTRACE_OPS_FL_INITIALIZED,
++ FTRACE_OPS_FL_INITIALIZED |
++ FTRACE_OPS_FL_PID,
+ };
+
+ /*
+@@ -5023,7 +5041,9 @@ static void ftrace_update_trampoline(struct ftrace_ops *ops)
+
+ static struct ftrace_ops global_ops = {
+ .func = ftrace_stub,
+- .flags = FTRACE_OPS_FL_RECURSION_SAFE | FTRACE_OPS_FL_INITIALIZED,
++ .flags = FTRACE_OPS_FL_RECURSION_SAFE |
++ FTRACE_OPS_FL_INITIALIZED |
++ FTRACE_OPS_FL_PID,
+ };
+
+ static int __init ftrace_nodyn_init(void)
+@@ -5080,11 +5100,6 @@ void ftrace_init_array_ops(struct trace_array *tr, ftrace_func_t func)
+ if (WARN_ON(tr->ops->func != ftrace_stub))
+ printk("ftrace ops had %pS for function\n",
+ tr->ops->func);
+- /* Only the top level instance does pid tracing */
+- if (!list_empty(&ftrace_pids)) {
+- set_ftrace_pid_function(func);
+- func = ftrace_pid_func;
+- }
+ }
+ tr->ops->func = func;
+ tr->ops->private = tr;
+@@ -5371,7 +5386,7 @@ static void *fpid_start(struct seq_file *m, loff_t *pos)
+ {
+ mutex_lock(&ftrace_lock);
+
+- if (list_empty(&ftrace_pids) && (!*pos))
++ if (!ftrace_pids_enabled() && (!*pos))
+ return (void *) 1;
+
+ return seq_list_start(&ftrace_pids, *pos);
+@@ -5610,6 +5625,7 @@ static struct ftrace_ops graph_ops = {
+ .func = ftrace_stub,
+ .flags = FTRACE_OPS_FL_RECURSION_SAFE |
+ FTRACE_OPS_FL_INITIALIZED |
++ FTRACE_OPS_FL_PID |
+ FTRACE_OPS_FL_STUB,
+ #ifdef FTRACE_GRAPH_TRAMP_ADDR
+ .trampoline = FTRACE_GRAPH_TRAMP_ADDR,
+diff --git a/lib/dma-debug.c b/lib/dma-debug.c
+index ae4b65e17e64..dace71fe41f7 100644
+--- a/lib/dma-debug.c
++++ b/lib/dma-debug.c
+@@ -574,6 +574,9 @@ void debug_dma_assert_idle(struct page *page)
+ unsigned long flags;
+ phys_addr_t cln;
+
++ if (dma_debug_disabled())
++ return;
++
+ if (!page)
+ return;
+
+diff --git a/net/can/af_can.c b/net/can/af_can.c
+index 689c818ed007..62c635f2bcfc 100644
+--- a/net/can/af_can.c
++++ b/net/can/af_can.c
+@@ -89,6 +89,8 @@ struct timer_list can_stattimer; /* timer for statistics update */
+ struct s_stats can_stats; /* packet statistics */
+ struct s_pstats can_pstats; /* receive list statistics */
+
++static atomic_t skbcounter = ATOMIC_INIT(0);
++
+ /*
+ * af_can socket functions
+ */
+@@ -310,12 +312,8 @@ int can_send(struct sk_buff *skb, int loop)
+ return err;
+ }
+
+- if (newskb) {
+- if (!(newskb->tstamp.tv64))
+- __net_timestamp(newskb);
+-
++ if (newskb)
+ netif_rx_ni(newskb);
+- }
+
+ /* update statistics */
+ can_stats.tx_frames++;
+@@ -683,6 +681,10 @@ static void can_receive(struct sk_buff *skb, struct net_device *dev)
+ can_stats.rx_frames++;
+ can_stats.rx_frames_delta++;
+
++ /* create non-zero unique skb identifier together with *skb */
++ while (!(can_skb_prv(skb)->skbcnt))
++ can_skb_prv(skb)->skbcnt = atomic_inc_return(&skbcounter);
++
+ rcu_read_lock();
+
+ /* deliver the packet to sockets listening on all devices */
+diff --git a/net/can/bcm.c b/net/can/bcm.c
+index b523453585be..a1ba6875c2a2 100644
+--- a/net/can/bcm.c
++++ b/net/can/bcm.c
+@@ -261,6 +261,7 @@ static void bcm_can_tx(struct bcm_op *op)
+
+ can_skb_reserve(skb);
+ can_skb_prv(skb)->ifindex = dev->ifindex;
++ can_skb_prv(skb)->skbcnt = 0;
+
+ memcpy(skb_put(skb, CFSIZ), cf, CFSIZ);
+
+@@ -1217,6 +1218,7 @@ static int bcm_tx_send(struct msghdr *msg, int ifindex, struct sock *sk)
+ }
+
+ can_skb_prv(skb)->ifindex = dev->ifindex;
++ can_skb_prv(skb)->skbcnt = 0;
+ skb->dev = dev;
+ can_skb_set_owner(skb, sk);
+ err = can_send(skb, 1); /* send with loopback */
+diff --git a/net/can/raw.c b/net/can/raw.c
+index 31b9748cbb4e..2e67b1423cd3 100644
+--- a/net/can/raw.c
++++ b/net/can/raw.c
+@@ -75,7 +75,7 @@ MODULE_ALIAS("can-proto-1");
+ */
+
+ struct uniqframe {
+- ktime_t tstamp;
++ int skbcnt;
+ const struct sk_buff *skb;
+ unsigned int join_rx_count;
+ };
+@@ -133,7 +133,7 @@ static void raw_rcv(struct sk_buff *oskb, void *data)
+
+ /* eliminate multiple filter matches for the same skb */
+ if (this_cpu_ptr(ro->uniq)->skb == oskb &&
+- ktime_equal(this_cpu_ptr(ro->uniq)->tstamp, oskb->tstamp)) {
++ this_cpu_ptr(ro->uniq)->skbcnt == can_skb_prv(oskb)->skbcnt) {
+ if (ro->join_filters) {
+ this_cpu_inc(ro->uniq->join_rx_count);
+ /* drop frame until all enabled filters matched */
+@@ -144,7 +144,7 @@ static void raw_rcv(struct sk_buff *oskb, void *data)
+ }
+ } else {
+ this_cpu_ptr(ro->uniq)->skb = oskb;
+- this_cpu_ptr(ro->uniq)->tstamp = oskb->tstamp;
++ this_cpu_ptr(ro->uniq)->skbcnt = can_skb_prv(oskb)->skbcnt;
+ this_cpu_ptr(ro->uniq)->join_rx_count = 1;
+ /* drop first frame to check all enabled filters? */
+ if (ro->join_filters && ro->count > 1)
+@@ -749,6 +749,7 @@ static int raw_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
+
+ can_skb_reserve(skb);
+ can_skb_prv(skb)->ifindex = dev->ifindex;
++ can_skb_prv(skb)->skbcnt = 0;
+
+ err = memcpy_from_msg(skb_put(skb, size), msg, size);
+ if (err < 0)
+diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
+index 29236e832e44..c09c0131bfa2 100644
+--- a/net/mac80211/debugfs_netdev.c
++++ b/net/mac80211/debugfs_netdev.c
+@@ -723,6 +723,7 @@ void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
+
+ debugfs_remove_recursive(sdata->vif.debugfs_dir);
+ sdata->vif.debugfs_dir = NULL;
++ sdata->debugfs.subdir_stations = NULL;
+ }
+
+ void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
+diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
+index 273b8bff6ba4..657ba9f5d308 100644
+--- a/net/rds/ib_rdma.c
++++ b/net/rds/ib_rdma.c
+@@ -759,8 +759,10 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
+ }
+
+ ibmr = rds_ib_alloc_fmr(rds_ibdev);
+- if (IS_ERR(ibmr))
++ if (IS_ERR(ibmr)) {
++ rds_ib_dev_put(rds_ibdev);
+ return ibmr;
++ }
+
+ ret = rds_ib_map_fmr(rds_ibdev, ibmr, sg, nents);
+ if (ret == 0)
+diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
+index d126c03361ae..75888dd38a7f 100644
+--- a/sound/core/pcm_native.c
++++ b/sound/core/pcm_native.c
+@@ -85,7 +85,7 @@ static DECLARE_RWSEM(snd_pcm_link_rwsem);
+ void snd_pcm_stream_lock(struct snd_pcm_substream *substream)
+ {
+ if (substream->pcm->nonatomic) {
+- down_read(&snd_pcm_link_rwsem);
++ down_read_nested(&snd_pcm_link_rwsem, SINGLE_DEPTH_NESTING);
+ mutex_lock(&substream->self_group.mutex);
+ } else {
+ read_lock(&snd_pcm_link_rwlock);
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index c403dd10d126..44dfc7b92bc3 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -2056,6 +2056,8 @@ static const struct pci_device_id azx_ids[] = {
+ /* ATI HDMI */
+ { PCI_DEVICE(0x1002, 0x1308),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
++ { PCI_DEVICE(0x1002, 0x157a),
++ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0x793b),
+ .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
+ { PCI_DEVICE(0x1002, 0x7919),
+@@ -2110,8 +2112,14 @@ static const struct pci_device_id azx_ids[] = {
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0xaab0),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
++ { PCI_DEVICE(0x1002, 0xaac0),
++ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0xaac8),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
++ { PCI_DEVICE(0x1002, 0xaad8),
++ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
++ { PCI_DEVICE(0x1002, 0xaae8),
++ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ /* VIA VT8251/VT8237A */
+ { PCI_DEVICE(0x1106, 0x3288),
+ .driver_data = AZX_DRIVER_VIA | AZX_DCAPS_POSFIX_VIA },
+diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
+index 5f44f60a6389..225b78b4ef12 100644
+--- a/sound/pci/hda/patch_hdmi.c
++++ b/sound/pci/hda/patch_hdmi.c
+@@ -3333,6 +3333,7 @@ static const struct hda_codec_preset snd_hda_preset_hdmi[] = {
+ { .id = 0x10de0070, .name = "GPU 70 HDMI/DP", .patch = patch_nvhdmi },
+ { .id = 0x10de0071, .name = "GPU 71 HDMI/DP", .patch = patch_nvhdmi },
+ { .id = 0x10de0072, .name = "GPU 72 HDMI/DP", .patch = patch_nvhdmi },
++{ .id = 0x10de007d, .name = "GPU 7d HDMI/DP", .patch = patch_nvhdmi },
+ { .id = 0x10de8001, .name = "MCP73 HDMI", .patch = patch_nvhdmi_2ch },
+ { .id = 0x11069f80, .name = "VX900 HDMI/DP", .patch = patch_via_hdmi },
+ { .id = 0x11069f81, .name = "VX900 HDMI/DP", .patch = patch_via_hdmi },
+@@ -3396,6 +3397,7 @@ MODULE_ALIAS("snd-hda-codec-id:10de0067");
+ MODULE_ALIAS("snd-hda-codec-id:10de0070");
+ MODULE_ALIAS("snd-hda-codec-id:10de0071");
+ MODULE_ALIAS("snd-hda-codec-id:10de0072");
++MODULE_ALIAS("snd-hda-codec-id:10de007d");
+ MODULE_ALIAS("snd-hda-codec-id:10de8001");
+ MODULE_ALIAS("snd-hda-codec-id:11069f80");
+ MODULE_ALIAS("snd-hda-codec-id:11069f81");
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 0e75998db39f..590bcfb0e82f 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -2224,7 +2224,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x106b, 0x4300, "iMac 9,1", ALC889_FIXUP_IMAC91_VREF),
+ SND_PCI_QUIRK(0x106b, 0x4600, "MacbookPro 5,2", ALC889_FIXUP_IMAC91_VREF),
+ SND_PCI_QUIRK(0x106b, 0x4900, "iMac 9,1 Aluminum", ALC889_FIXUP_IMAC91_VREF),
+- SND_PCI_QUIRK(0x106b, 0x4a00, "Macbook 5,2", ALC889_FIXUP_IMAC91_VREF),
++ SND_PCI_QUIRK(0x106b, 0x4a00, "Macbook 5,2", ALC889_FIXUP_MBA11_VREF),
+
+ SND_PCI_QUIRK(0x1071, 0x8258, "Evesham Voyaeger", ALC882_FIXUP_EAPD),
+ SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
+@@ -5004,7 +5004,7 @@ static const struct hda_fixup alc269_fixups[] = {
+ { 0x14, 0x90170110 },
+ { 0x17, 0x40000008 },
+ { 0x18, 0x411111f0 },
+- { 0x19, 0x411111f0 },
++ { 0x19, 0x01a1913c },
+ { 0x1a, 0x411111f0 },
+ { 0x1b, 0x411111f0 },
+ { 0x1d, 0x40f89b2d },
+@@ -5114,6 +5114,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x064a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x064b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x0665, "Dell XPS 13", ALC288_FIXUP_DELL_XPS_13),
++ SND_PCI_QUIRK(0x1028, 0x069a, "Dell Vostro 5480", ALC290_FIXUP_SUBWOOFER_HSJACK),
+ SND_PCI_QUIRK(0x1028, 0x06c7, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+@@ -5382,6 +5383,17 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
+ {0x1d, 0x40700001},
+ {0x21, 0x02211030}),
+ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
++ {0x12, 0x40000000},
++ {0x14, 0x90170130},
++ {0x17, 0x411111f0},
++ {0x18, 0x411111f0},
++ {0x19, 0x411111f0},
++ {0x1a, 0x411111f0},
++ {0x1b, 0x01014020},
++ {0x1d, 0x4054c029},
++ {0x1e, 0x411111f0},
++ {0x21, 0x0221103f}),
++ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+ {0x12, 0x90a60160},
+ {0x14, 0x90170120},
+ {0x17, 0x90170140},
+diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
+index 6c66d7e16439..25f0f45e6640 100644
+--- a/sound/pci/hda/patch_sigmatel.c
++++ b/sound/pci/hda/patch_sigmatel.c
+@@ -2920,7 +2920,8 @@ static const struct snd_pci_quirk stac92hd83xxx_fixup_tbl[] = {
+ SND_PCI_QUIRK(PCI_VENDOR_ID_HP, 0x148a,
+ "HP Mini", STAC_92HD83XXX_HP_LED),
+ SND_PCI_QUIRK_VENDOR(PCI_VENDOR_ID_HP, "HP", STAC_92HD83XXX_HP),
+- SND_PCI_QUIRK(PCI_VENDOR_ID_TOSHIBA, 0xfa91,
++ /* match both for 0xfa91 and 0xfa93 */
++ SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_TOSHIBA, 0xfffd, 0xfa91,
+ "Toshiba Satellite S50D", STAC_92HD83XXX_GPIO10_EAPD),
+ {} /* terminator */
+ };
+diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
+index 8461d6bf992f..204cc074adb9 100644
+--- a/sound/usb/line6/pcm.c
++++ b/sound/usb/line6/pcm.c
+@@ -186,12 +186,8 @@ static int line6_stream_start(struct snd_line6_pcm *line6pcm, int direction,
+ int ret = 0;
+
+ spin_lock_irqsave(&pstr->lock, flags);
+- if (!test_and_set_bit(type, &pstr->running)) {
+- if (pstr->active_urbs || pstr->unlink_urbs) {
+- ret = -EBUSY;
+- goto error;
+- }
+-
++ if (!test_and_set_bit(type, &pstr->running) &&
++ !(pstr->active_urbs || pstr->unlink_urbs)) {
+ pstr->count = 0;
+ /* Submit all currently available URBs */
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK)
+@@ -199,7 +195,6 @@ static int line6_stream_start(struct snd_line6_pcm *line6pcm, int direction,
+ else
+ ret = line6_submit_audio_in_all_urbs(line6pcm);
+ }
+- error:
+ if (ret < 0)
+ clear_bit(type, &pstr->running);
+ spin_unlock_irqrestore(&pstr->lock, flags);
+diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
+index e5000da9e9d7..6a803eff87f7 100644
+--- a/sound/usb/mixer_maps.c
++++ b/sound/usb/mixer_maps.c
+@@ -341,6 +341,20 @@ static const struct usbmix_name_map scms_usb3318_map[] = {
+ { 0 }
+ };
+
++/* Bose companion 5, the dB conversion factor is 16 instead of 256 */
++static struct usbmix_dB_map bose_companion5_dB = {-5006, -6};
++static struct usbmix_name_map bose_companion5_map[] = {
++ { 3, NULL, .dB = &bose_companion5_dB },
++ { 0 } /* terminator */
++};
++
++/* Dragonfly DAC 1.2, the dB conversion factor is 1 instead of 256 */
++static struct usbmix_dB_map dragonfly_1_2_dB = {0, 5000};
++static struct usbmix_name_map dragonfly_1_2_map[] = {
++ { 7, NULL, .dB = &dragonfly_1_2_dB },
++ { 0 } /* terminator */
++};
++
+ /*
+ * Control map entries
+ */
+@@ -451,6 +465,16 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
+ .id = USB_ID(0x25c4, 0x0003),
+ .map = scms_usb3318_map,
+ },
++ {
++ /* Bose Companion 5 */
++ .id = USB_ID(0x05a7, 0x1020),
++ .map = bose_companion5_map,
++ },
++ {
++ /* Dragonfly DAC 1.2 */
++ .id = USB_ID(0x21b4, 0x0081),
++ .map = dragonfly_1_2_map,
++ },
+ { 0 } /* terminator */
+ };
+
+diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
+index 2f6d3e9a1bcd..e4756651a52c 100644
+--- a/sound/usb/quirks-table.h
++++ b/sound/usb/quirks-table.h
+@@ -2512,6 +2512,74 @@ YAMAHA_DEVICE(0x7010, "UB99"),
+ }
+ },
+
++/* Steinberg devices */
++{
++ /* Steinberg MI2 */
++ USB_DEVICE_VENDOR_SPEC(0x0a4e, 0x2040),
++ .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
++ .ifnum = QUIRK_ANY_INTERFACE,
++ .type = QUIRK_COMPOSITE,
++ .data = & (const struct snd_usb_audio_quirk[]) {
++ {
++ .ifnum = 0,
++ .type = QUIRK_AUDIO_STANDARD_INTERFACE
++ },
++ {
++ .ifnum = 1,
++ .type = QUIRK_AUDIO_STANDARD_INTERFACE
++ },
++ {
++ .ifnum = 2,
++ .type = QUIRK_AUDIO_STANDARD_INTERFACE
++ },
++ {
++ .ifnum = 3,
++ .type = QUIRK_MIDI_FIXED_ENDPOINT,
++ .data = &(const struct snd_usb_midi_endpoint_info) {
++ .out_cables = 0x0001,
++ .in_cables = 0x0001
++ }
++ },
++ {
++ .ifnum = -1
++ }
++ }
++ }
++},
++{
++ /* Steinberg MI4 */
++ USB_DEVICE_VENDOR_SPEC(0x0a4e, 0x4040),
++ .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
++ .ifnum = QUIRK_ANY_INTERFACE,
++ .type = QUIRK_COMPOSITE,
++ .data = & (const struct snd_usb_audio_quirk[]) {
++ {
++ .ifnum = 0,
++ .type = QUIRK_AUDIO_STANDARD_INTERFACE
++ },
++ {
++ .ifnum = 1,
++ .type = QUIRK_AUDIO_STANDARD_INTERFACE
++ },
++ {
++ .ifnum = 2,
++ .type = QUIRK_AUDIO_STANDARD_INTERFACE
++ },
++ {
++ .ifnum = 3,
++ .type = QUIRK_MIDI_FIXED_ENDPOINT,
++ .data = &(const struct snd_usb_midi_endpoint_info) {
++ .out_cables = 0x0001,
++ .in_cables = 0x0001
++ }
++ },
++ {
++ .ifnum = -1
++ }
++ }
++ }
++},
++
+ /* TerraTec devices */
+ {
+ USB_DEVICE_VENDOR_SPEC(0x0ccd, 0x0012),
+diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
+index 995b7a8596b1..658b0a89796d 100644
+--- a/tools/perf/ui/browsers/hists.c
++++ b/tools/perf/ui/browsers/hists.c
+@@ -45,7 +45,7 @@ static struct rb_node *hists__filter_entries(struct rb_node *nd,
+
+ static bool hist_browser__has_filter(struct hist_browser *hb)
+ {
+- return hists__has_filter(hb->hists) || hb->min_pcnt;
++ return hists__has_filter(hb->hists) || hb->min_pcnt || symbol_conf.has_filter;
+ }
+
+ static int hist_browser__get_folding(struct hist_browser *browser)
+diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
+index 201f6c4ca738..99378a5c57a7 100644
+--- a/tools/perf/util/symbol.c
++++ b/tools/perf/util/symbol.c
+@@ -1893,6 +1893,8 @@ int setup_intlist(struct intlist **list, const char *list_str,
+ pr_err("problems parsing %s list\n", list_name);
+ return -1;
+ }
++
++ symbol_conf.has_filter = true;
+ return 0;
+ }
+
+diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
+index 09561500164a..be0217989bcc 100644
+--- a/tools/perf/util/symbol.h
++++ b/tools/perf/util/symbol.h
+@@ -105,7 +105,8 @@ struct symbol_conf {
+ demangle_kernel,
+ filter_relative,
+ show_hist_headers,
+- branch_callstack;
++ branch_callstack,
++ has_filter;
+ const char *vmlinux_name,
+ *kallsyms_name,
+ *source_prefix,
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-08-03 19:01 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-08-03 19:01 UTC (permalink / raw
To: gentoo-commits
commit: ca1be7247b8e5d2dfeb7ae78ece8b4ec4cb819a2
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Aug 3 19:01:14 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Aug 3 19:01:14 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=ca1be724
Linux patch 4.1.4
0000_README | 4 +
1003_linux-4.1.4.patch | 11078 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 11082 insertions(+)
diff --git a/0000_README b/0000_README
index eab69c9..ceda226 100644
--- a/0000_README
+++ b/0000_README
@@ -55,6 +55,10 @@ Patch: 1002_linux-4.1.3.patch
From: http://www.kernel.org
Desc: Linux 4.1.3
+Patch: 1003_linux-4.1.4.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.4
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1003_linux-4.1.4.patch b/1003_linux-4.1.4.patch
new file mode 100644
index 0000000..f7598b8
--- /dev/null
+++ b/1003_linux-4.1.4.patch
@@ -0,0 +1,11078 @@
+diff --git a/Documentation/ABI/testing/ima_policy b/Documentation/ABI/testing/ima_policy
+index d0d0c578324c..0a378a88217a 100644
+--- a/Documentation/ABI/testing/ima_policy
++++ b/Documentation/ABI/testing/ima_policy
+@@ -20,17 +20,19 @@ Description:
+ action: measure | dont_measure | appraise | dont_appraise | audit
+ condition:= base | lsm [option]
+ base: [[func=] [mask=] [fsmagic=] [fsuuid=] [uid=]
+- [fowner]]
++ [euid=] [fowner=]]
+ lsm: [[subj_user=] [subj_role=] [subj_type=]
+ [obj_user=] [obj_role=] [obj_type=]]
+ option: [[appraise_type=]] [permit_directio]
+
+ base: func:= [BPRM_CHECK][MMAP_CHECK][FILE_CHECK][MODULE_CHECK]
+ [FIRMWARE_CHECK]
+- mask:= [MAY_READ] [MAY_WRITE] [MAY_APPEND] [MAY_EXEC]
++ mask:= [[^]MAY_READ] [[^]MAY_WRITE] [[^]MAY_APPEND]
++ [[^]MAY_EXEC]
+ fsmagic:= hex value
+ fsuuid:= file system UUID (e.g 8bcbe394-4f13-4144-be8e-5aa9ea2ce2f6)
+ uid:= decimal value
++ euid:= decimal value
+ fowner:=decimal value
+ lsm: are LSM specific
+ option: appraise_type:= [imasig]
+@@ -49,11 +51,25 @@ Description:
+ dont_measure fsmagic=0x01021994
+ dont_appraise fsmagic=0x01021994
+ # RAMFS_MAGIC
+- dont_measure fsmagic=0x858458f6
+ dont_appraise fsmagic=0x858458f6
++ # DEVPTS_SUPER_MAGIC
++ dont_measure fsmagic=0x1cd1
++ dont_appraise fsmagic=0x1cd1
++ # BINFMTFS_MAGIC
++ dont_measure fsmagic=0x42494e4d
++ dont_appraise fsmagic=0x42494e4d
+ # SECURITYFS_MAGIC
+ dont_measure fsmagic=0x73636673
+ dont_appraise fsmagic=0x73636673
++ # SELINUX_MAGIC
++ dont_measure fsmagic=0xf97cff8c
++ dont_appraise fsmagic=0xf97cff8c
++ # CGROUP_SUPER_MAGIC
++ dont_measure fsmagic=0x27e0eb
++ dont_appraise fsmagic=0x27e0eb
++ # NSFS_MAGIC
++ dont_measure fsmagic=0x6e736673
++ dont_appraise fsmagic=0x6e736673
+
+ measure func=BPRM_CHECK
+ measure func=FILE_MMAP mask=MAY_EXEC
+@@ -70,10 +86,6 @@ Description:
+ Examples of LSM specific definitions:
+
+ SELinux:
+- # SELINUX_MAGIC
+- dont_measure fsmagic=0xf97cff8c
+- dont_appraise fsmagic=0xf97cff8c
+-
+ dont_measure obj_type=var_log_t
+ dont_appraise obj_type=var_log_t
+ dont_measure obj_type=auditd_log_t
+diff --git a/Documentation/ABI/testing/sysfs-ata b/Documentation/ABI/testing/sysfs-ata
+index 0a932155cbba..9231daef3813 100644
+--- a/Documentation/ABI/testing/sysfs-ata
++++ b/Documentation/ABI/testing/sysfs-ata
+@@ -90,6 +90,17 @@ gscr
+ 130: SATA_PMP_GSCR_SII_GPIO
+ Only valid if the device is a PM.
+
++trim
++
++ Shows the DSM TRIM mode currently used by the device. Valid
++ values are:
++ unsupported: Drive does not support DSM TRIM
++ unqueued: Drive supports unqueued DSM TRIM only
++ queued: Drive supports queued DSM TRIM
++ forced_unqueued: Drive's unqueued DSM support is known to be
++ buggy and only unqueued TRIM commands
++ are sent
++
+ spdn_cnt
+
+ Number of time libata decided to lower the speed of link due to errors.
+diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
+index 3befcb19f414..1fbdd79d1624 100644
+--- a/Documentation/ABI/testing/sysfs-bus-iio
++++ b/Documentation/ABI/testing/sysfs-bus-iio
+@@ -1165,10 +1165,8 @@ Description:
+ object is near the sensor, usually be observing
+ reflectivity of infrared or ultrasound emitted.
+ Often these sensors are unit less and as such conversion
+- to SI units is not possible. Where it is, the units should
+- be meters. If such a conversion is not possible, the reported
+- values should behave in the same way as a distance, i.e. lower
+- values indicate something is closer to the sensor.
++ to SI units is not possible. Higher proximity measurements
++ indicate closer objects, and vice versa.
+
+ What: /sys/.../iio:deviceX/in_illuminance_input
+ What: /sys/.../iio:deviceX/in_illuminance_raw
+diff --git a/Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt
+index adda2a8d1d52..e357b020861d 100644
+--- a/Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt
++++ b/Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt
+@@ -92,5 +92,5 @@ mpp61 61 gpo, dev(wen1), uart1(txd), audio(rclk)
+ mpp62 62 gpio, dev(a2), uart1(cts), tdm(drx), pcie(clkreq0),
+ audio(mclk), uart0(cts)
+ mpp63 63 gpo, spi0(sck), tclk
+-mpp64 64 gpio, spi0(miso), spi0-1(cs1)
+-mpp65 65 gpio, spi0(mosi), spi0-1(cs2)
++mpp64 64 gpio, spi0(miso), spi0(cs1)
++mpp65 65 gpio, spi0(mosi), spi0(cs2)
+diff --git a/Documentation/devicetree/bindings/pinctrl/marvell,armada-375-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/marvell,armada-375-pinctrl.txt
+index 7de0cda4a379..bedbe42c8c0a 100644
+--- a/Documentation/devicetree/bindings/pinctrl/marvell,armada-375-pinctrl.txt
++++ b/Documentation/devicetree/bindings/pinctrl/marvell,armada-375-pinctrl.txt
+@@ -22,8 +22,8 @@ mpp5 5 gpio, dev(ad7), spi0(cs2), spi1(cs2)
+ mpp6 6 gpio, dev(ad0), led(p1), audio(rclk)
+ mpp7 7 gpio, dev(ad1), ptp(clk), led(p2), audio(extclk)
+ mpp8 8 gpio, dev (bootcs), spi0(cs0), spi1(cs0)
+-mpp9 9 gpio, nf(wen), spi0(sck), spi1(sck)
+-mpp10 10 gpio, nf(ren), dram(vttctrl), led(c1)
++mpp9 9 gpio, spi0(sck), spi1(sck), nand(we)
++mpp10 10 gpio, dram(vttctrl), led(c1), nand(re)
+ mpp11 11 gpio, dev(a0), led(c2), audio(sdo)
+ mpp12 12 gpio, dev(a1), audio(bclk)
+ mpp13 13 gpio, dev(readyn), pcie0(rstoutn), pcie1(rstoutn)
+diff --git a/Documentation/devicetree/bindings/pinctrl/marvell,armada-38x-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/marvell,armada-38x-pinctrl.txt
+index b17c96849fc9..4ac138aaaf87 100644
+--- a/Documentation/devicetree/bindings/pinctrl/marvell,armada-38x-pinctrl.txt
++++ b/Documentation/devicetree/bindings/pinctrl/marvell,armada-38x-pinctrl.txt
+@@ -27,15 +27,15 @@ mpp8 8 gpio, ge0(txd1), dev(ad10)
+ mpp9 9 gpio, ge0(txd2), dev(ad11)
+ mpp10 10 gpio, ge0(txd3), dev(ad12)
+ mpp11 11 gpio, ge0(txctl), dev(ad13)
+-mpp12 12 gpio, ge0(rxd0), pcie0(rstout), pcie1(rstout) [1], spi0(cs1), dev(ad14)
+-mpp13 13 gpio, ge0(rxd1), pcie0(clkreq), pcie1(clkreq) [1], spi0(cs2), dev(ad15)
+-mpp14 14 gpio, ge0(rxd2), ptp(clk), m(vtt_ctrl), spi0(cs3), dev(wen1)
+-mpp15 15 gpio, ge0(rxd3), ge(mdc slave), pcie0(rstout), spi0(mosi), pcie1(rstout) [1]
+-mpp16 16 gpio, ge0(rxctl), ge(mdio slave), m(decc_err), spi0(miso), pcie0(clkreq)
++mpp12 12 gpio, ge0(rxd0), pcie0(rstout), spi0(cs1), dev(ad14), pcie3(clkreq)
++mpp13 13 gpio, ge0(rxd1), pcie0(clkreq), pcie1(clkreq) [1], spi0(cs2), dev(ad15), pcie2(clkreq)
++mpp14 14 gpio, ge0(rxd2), ptp(clk), m(vtt_ctrl), spi0(cs3), dev(wen1), pcie3(clkreq)
++mpp15 15 gpio, ge0(rxd3), ge(mdc slave), pcie0(rstout), spi0(mosi)
++mpp16 16 gpio, ge0(rxctl), ge(mdio slave), m(decc_err), spi0(miso), pcie0(clkreq), pcie1(clkreq) [1]
+ mpp17 17 gpio, ge0(rxclk), ptp(clk), ua1(rxd), spi0(sck), sata1(prsnt)
+-mpp18 18 gpio, ge0(rxerr), ptp(trig_gen), ua1(txd), spi0(cs0), pcie1(rstout) [1]
+-mpp19 19 gpio, ge0(col), ptp(event_req), pcie0(clkreq), sata1(prsnt), ua0(cts)
+-mpp20 20 gpio, ge0(txclk), ptp(clk), pcie1(rstout) [1], sata0(prsnt), ua0(rts)
++mpp18 18 gpio, ge0(rxerr), ptp(trig_gen), ua1(txd), spi0(cs0)
++mpp19 19 gpio, ge0(col), ptp(event_req), ge0(txerr), sata1(prsnt), ua0(cts)
++mpp20 20 gpio, ge0(txclk), ptp(clk), sata0(prsnt), ua0(rts)
+ mpp21 21 gpio, spi0(cs1), ge1(rxd0), sata0(prsnt), sd0(cmd), dev(bootcs)
+ mpp22 22 gpio, spi0(mosi), dev(ad0)
+ mpp23 23 gpio, spi0(sck), dev(ad2)
+@@ -58,23 +58,23 @@ mpp39 39 gpio, i2c1(sck), ge1(rxd2), ua0(cts), sd0(d1), dev(a2)
+ mpp40 40 gpio, i2c1(sda), ge1(rxd3), ua0(rts), sd0(d2), dev(ad6)
+ mpp41 41 gpio, ua1(rxd), ge1(rxctl), ua0(cts), spi1(cs3), dev(burst/last)
+ mpp42 42 gpio, ua1(txd), ua0(rts), dev(ad7)
+-mpp43 43 gpio, pcie0(clkreq), m(vtt_ctrl), m(decc_err), pcie0(rstout), dev(clkout)
+-mpp44 44 gpio, sata0(prsnt), sata1(prsnt), sata2(prsnt) [2], sata3(prsnt) [3], pcie0(rstout)
+-mpp45 45 gpio, ref(clk_out0), pcie0(rstout), pcie1(rstout) [1], pcie2(rstout), pcie3(rstout)
+-mpp46 46 gpio, ref(clk_out1), pcie0(rstout), pcie1(rstout) [1], pcie2(rstout), pcie3(rstout)
+-mpp47 47 gpio, sata0(prsnt), sata1(prsnt), sata2(prsnt) [2], spi1(cs2), sata3(prsnt) [2]
+-mpp48 48 gpio, sata0(prsnt), m(vtt_ctrl), tdm2c(pclk), audio(mclk), sd0(d4)
+-mpp49 49 gpio, sata2(prsnt) [2], sata3(prsnt) [2], tdm2c(fsync), audio(lrclk), sd0(d5)
+-mpp50 50 gpio, pcie0(rstout), pcie1(rstout) [1], tdm2c(drx), audio(extclk), sd0(cmd)
++mpp43 43 gpio, pcie0(clkreq), m(vtt_ctrl), m(decc_err), spi1(cs2), dev(clkout)
++mpp44 44 gpio, sata0(prsnt), sata1(prsnt), sata2(prsnt) [2], sata3(prsnt) [3]
++mpp45 45 gpio, ref(clk_out0), pcie0(rstout)
++mpp46 46 gpio, ref(clk_out1), pcie0(rstout)
++mpp47 47 gpio, sata0(prsnt), sata1(prsnt), sata2(prsnt) [2], sata3(prsnt) [2]
++mpp48 48 gpio, sata0(prsnt), m(vtt_ctrl), tdm2c(pclk), audio(mclk), sd0(d4), pcie0(clkreq)
++mpp49 49 gpio, sata2(prsnt) [2], sata3(prsnt) [2], tdm2c(fsync), audio(lrclk), sd0(d5), pcie1(clkreq)
++mpp50 50 gpio, pcie0(rstout), tdm2c(drx), audio(extclk), sd0(cmd)
+ mpp51 51 gpio, tdm2c(dtx), audio(sdo), m(decc_err)
+-mpp52 52 gpio, pcie0(rstout), pcie1(rstout) [1], tdm2c(intn), audio(sdi), sd0(d6)
++mpp52 52 gpio, pcie0(rstout), tdm2c(intn), audio(sdi), sd0(d6)
+ mpp53 53 gpio, sata1(prsnt), sata0(prsnt), tdm2c(rstn), audio(bclk), sd0(d7)
+-mpp54 54 gpio, sata0(prsnt), sata1(prsnt), pcie0(rstout), pcie1(rstout) [1], sd0(d3)
++mpp54 54 gpio, sata0(prsnt), sata1(prsnt), pcie0(rstout), ge0(txerr), sd0(d3)
+ mpp55 55 gpio, ua1(cts), ge(mdio), pcie1(clkreq) [1], spi1(cs1), sd0(d0)
+ mpp56 56 gpio, ua1(rts), ge(mdc), m(decc_err), spi1(mosi)
+ mpp57 57 gpio, spi1(sck), sd0(clk)
+ mpp58 58 gpio, pcie1(clkreq) [1], i2c1(sck), pcie2(clkreq), spi1(miso), sd0(d1)
+-mpp59 59 gpio, pcie0(rstout), i2c1(sda), pcie1(rstout) [1], spi1(cs0), sd0(d2)
++mpp59 59 gpio, pcie0(rstout), i2c1(sda), spi1(cs0), sd0(d2)
+
+ [1]: only available on 88F6820 and 88F6828
+ [2]: only available on 88F6828
+diff --git a/Documentation/devicetree/bindings/pinctrl/marvell,armada-xp-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/marvell,armada-xp-pinctrl.txt
+index 373dbccd7ab0..96e7744cab84 100644
+--- a/Documentation/devicetree/bindings/pinctrl/marvell,armada-xp-pinctrl.txt
++++ b/Documentation/devicetree/bindings/pinctrl/marvell,armada-xp-pinctrl.txt
+@@ -42,15 +42,15 @@ mpp20 20 gpio, ge0(rxd4), ge1(rxd2), lcd(d20), ptp(clk)
+ mpp21 21 gpio, ge0(rxd5), ge1(rxd3), lcd(d21), mem(bat)
+ mpp22 22 gpio, ge0(rxd6), ge1(rxctl), lcd(d22), sata0(prsnt)
+ mpp23 23 gpio, ge0(rxd7), ge1(rxclk), lcd(d23), sata1(prsnt)
+-mpp24 24 gpio, lcd(hsync), sata1(prsnt), nf(bootcs-re), tdm(rst)
+-mpp25 25 gpio, lcd(vsync), sata0(prsnt), nf(bootcs-we), tdm(pclk)
+-mpp26 26 gpio, lcd(clk), tdm(fsync), vdd(cpu1-pd)
++mpp24 24 gpio, lcd(hsync), sata1(prsnt), tdm(rst)
++mpp25 25 gpio, lcd(vsync), sata0(prsnt), tdm(pclk)
++mpp26 26 gpio, lcd(clk), tdm(fsync)
+ mpp27 27 gpio, lcd(e), tdm(dtx), ptp(trig)
+ mpp28 28 gpio, lcd(pwm), tdm(drx), ptp(evreq)
+-mpp29 29 gpio, lcd(ref-clk), tdm(int0), ptp(clk), vdd(cpu0-pd)
++mpp29 29 gpio, lcd(ref-clk), tdm(int0), ptp(clk)
+ mpp30 30 gpio, tdm(int1), sd0(clk)
+-mpp31 31 gpio, tdm(int2), sd0(cmd), vdd(cpu0-pd)
+-mpp32 32 gpio, tdm(int3), sd0(d0), vdd(cpu1-pd)
++mpp31 31 gpio, tdm(int2), sd0(cmd)
++mpp32 32 gpio, tdm(int3), sd0(d0)
+ mpp33 33 gpio, tdm(int4), sd0(d1), mem(bat)
+ mpp34 34 gpio, tdm(int5), sd0(d2), sata0(prsnt)
+ mpp35 35 gpio, tdm(int6), sd0(d3), sata1(prsnt)
+@@ -58,21 +58,18 @@ mpp36 36 gpio, spi(mosi)
+ mpp37 37 gpio, spi(miso)
+ mpp38 38 gpio, spi(sck)
+ mpp39 39 gpio, spi(cs0)
+-mpp40 40 gpio, spi(cs1), uart2(cts), lcd(vga-hsync), vdd(cpu1-pd),
+- pcie(clkreq0)
++mpp40 40 gpio, spi(cs1), uart2(cts), lcd(vga-hsync), pcie(clkreq0)
+ mpp41 41 gpio, spi(cs2), uart2(rts), lcd(vga-vsync), sata1(prsnt),
+ pcie(clkreq1)
+-mpp42 42 gpio, uart2(rxd), uart0(cts), tdm(int7), tdm-1(timer),
+- vdd(cpu0-pd)
+-mpp43 43 gpio, uart2(txd), uart0(rts), spi(cs3), pcie(rstout),
+- vdd(cpu2-3-pd){1}
++mpp42 42 gpio, uart2(rxd), uart0(cts), tdm(int7), tdm-1(timer)
++mpp43 43 gpio, uart2(txd), uart0(rts), spi(cs3), pcie(rstout)
+ mpp44 44 gpio, uart2(cts), uart3(rxd), spi(cs4), pcie(clkreq2),
+ mem(bat)
+ mpp45 45 gpio, uart2(rts), uart3(txd), spi(cs5), sata1(prsnt)
+ mpp46 46 gpio, uart3(rts), uart1(rts), spi(cs6), sata0(prsnt)
+ mpp47 47 gpio, uart3(cts), uart1(cts), spi(cs7), pcie(clkreq3),
+ ref(clkout)
+-mpp48 48 gpio, tclk, dev(burst/last)
++mpp48 48 gpio, dev(clkout), dev(burst/last)
+
+ * Marvell Armada XP (mv78260 and mv78460 only)
+
+@@ -84,9 +81,9 @@ mpp51 51 gpio, dev(ad16)
+ mpp52 52 gpio, dev(ad17)
+ mpp53 53 gpio, dev(ad18)
+ mpp54 54 gpio, dev(ad19)
+-mpp55 55 gpio, dev(ad20), vdd(cpu0-pd)
+-mpp56 56 gpio, dev(ad21), vdd(cpu1-pd)
+-mpp57 57 gpio, dev(ad22), vdd(cpu2-3-pd){1}
++mpp55 55 gpio, dev(ad20)
++mpp56 56 gpio, dev(ad21)
++mpp57 57 gpio, dev(ad22)
+ mpp58 58 gpio, dev(ad23)
+ mpp59 59 gpio, dev(ad24)
+ mpp60 60 gpio, dev(ad25)
+@@ -96,6 +93,3 @@ mpp63 63 gpio, dev(ad28)
+ mpp64 64 gpio, dev(ad29)
+ mpp65 65 gpio, dev(ad30)
+ mpp66 66 gpio, dev(ad31)
+-
+-Notes:
+-* {1} vdd(cpu2-3-pd) only available on mv78460.
+diff --git a/Documentation/devicetree/bindings/usb/atmel-usb.txt b/Documentation/devicetree/bindings/usb/atmel-usb.txt
+index e180d56c75db..de773a00e2d4 100644
+--- a/Documentation/devicetree/bindings/usb/atmel-usb.txt
++++ b/Documentation/devicetree/bindings/usb/atmel-usb.txt
+@@ -60,9 +60,9 @@ Atmel High-Speed USB device controller
+
+ Required properties:
+ - compatible: Should be one of the following
+- "at91sam9rl-udc"
+- "at91sam9g45-udc"
+- "sama5d3-udc"
++ "atmel,at91sam9rl-udc"
++ "atmel,at91sam9g45-udc"
++ "atmel,sama5d3-udc"
+ - reg: Address and length of the register set for the device
+ - interrupts: Should contain usba interrupt
+ - ep childnode: To specify the number of endpoints and their properties.
+diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
+index 6726139bd289..cd03a0faca8f 100644
+--- a/Documentation/kernel-parameters.txt
++++ b/Documentation/kernel-parameters.txt
+@@ -1398,7 +1398,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
+ The list of supported hash algorithms is defined
+ in crypto/hash_info.h.
+
+- ima_tcb [IMA]
++ ima_policy= [IMA]
++ The builtin measurement policy to load during IMA
++ setup. Specyfing "tcb" as the value, measures all
++ programs exec'd, files mmap'd for exec, and all files
++ opened with the read mode bit set by either the
++ effective uid (euid=0) or uid=0.
++ Format: "tcb"
++
++ ima_tcb [IMA] Deprecated. Use ima_policy= instead.
+ Load a policy which meets the needs of the Trusted
+ Computing Base. This means IMA will measure all
+ programs exec'd, files mmap'd for exec, and all files
+diff --git a/Makefile b/Makefile
+index e3cdec4898be..36f3225cdf1f 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 3
++SUBLEVEL = 4
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/at91-sama5d4ek.dts b/arch/arm/boot/dts/at91-sama5d4ek.dts
+index 89ef4a540db5..45e7761b7a29 100644
+--- a/arch/arm/boot/dts/at91-sama5d4ek.dts
++++ b/arch/arm/boot/dts/at91-sama5d4ek.dts
+@@ -108,8 +108,8 @@
+ mmc0: mmc@f8000000 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_mmc0_clk_cmd_dat0 &pinctrl_mmc0_dat1_3 &pinctrl_mmc0_cd>;
+- slot@1 {
+- reg = <1>;
++ slot@0 {
++ reg = <0>;
+ bus-width = <4>;
+ cd-gpios = <&pioE 5 0>;
+ };
+diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
+index 70e59c5ceb2f..e54421176af8 100644
+--- a/arch/arm/boot/dts/at91sam9g45.dtsi
++++ b/arch/arm/boot/dts/at91sam9g45.dtsi
+@@ -1148,7 +1148,7 @@
+ usb2: gadget@fff78000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+- compatible = "atmel,at91sam9rl-udc";
++ compatible = "atmel,at91sam9g45-udc";
+ reg = <0x00600000 0x80000
+ 0xfff78000 0x400>;
+ interrupts = <27 IRQ_TYPE_LEVEL_HIGH 0>;
+diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
+index 3aa56ae3410a..3314a7303754 100644
+--- a/arch/arm/boot/dts/at91sam9x5.dtsi
++++ b/arch/arm/boot/dts/at91sam9x5.dtsi
+@@ -1062,7 +1062,7 @@
+ usb2: gadget@f803c000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+- compatible = "atmel,at91sam9rl-udc";
++ compatible = "atmel,at91sam9g45-udc";
+ reg = <0x00500000 0x80000
+ 0xf803c000 0x400>;
+ interrupts = <23 IRQ_TYPE_LEVEL_HIGH 0>;
+diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi
+index bbcfb5a19c77..0cb8b0b11c3f 100644
+--- a/arch/arm/boot/dts/imx23.dtsi
++++ b/arch/arm/boot/dts/imx23.dtsi
+@@ -435,6 +435,7 @@
+ interrupts = <36 37 38 39 40 41 42 43 44>;
+ status = "disabled";
+ clocks = <&clks 26>;
++ #io-channel-cells = <1>;
+ };
+
+ spdif@80054000 {
+diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi
+index 57ab8587f7b9..37e6182f1470 100644
+--- a/arch/arm/boot/dts/sama5d3.dtsi
++++ b/arch/arm/boot/dts/sama5d3.dtsi
+@@ -1321,7 +1321,7 @@
+ usb0: gadget@00500000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+- compatible = "atmel,at91sam9rl-udc";
++ compatible = "atmel,sama5d3-udc";
+ reg = <0x00500000 0x100000
+ 0xf8030000 0x4000>;
+ interrupts = <33 IRQ_TYPE_LEVEL_HIGH 2>;
+diff --git a/arch/arm/boot/dts/sama5d4.dtsi b/arch/arm/boot/dts/sama5d4.dtsi
+index 6b1bb58f9c0b..a5f5f4090af6 100644
+--- a/arch/arm/boot/dts/sama5d4.dtsi
++++ b/arch/arm/boot/dts/sama5d4.dtsi
+@@ -123,7 +123,7 @@
+ usb0: gadget@00400000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+- compatible = "atmel,at91sam9rl-udc";
++ compatible = "atmel,sama5d3-udc";
+ reg = <0x00400000 0x100000
+ 0xfc02c000 0x4000>;
+ interrupts = <47 IRQ_TYPE_LEVEL_HIGH 2>;
+@@ -1125,10 +1125,10 @@
+ compatible = "atmel,at91sam9g46-aes";
+ reg = <0xfc044000 0x100>;
+ interrupts = <12 IRQ_TYPE_LEVEL_HIGH 0>;
+- dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))
+- AT91_XDMAC_DT_PERID(41)>,
+- <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))
+- AT91_XDMAC_DT_PERID(40)>;
++ dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
++ | AT91_XDMAC_DT_PERID(41))>,
++ <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
++ | AT91_XDMAC_DT_PERID(40))>;
+ dma-names = "tx", "rx";
+ clocks = <&aes_clk>;
+ clock-names = "aes_clk";
+@@ -1139,10 +1139,10 @@
+ compatible = "atmel,at91sam9g46-tdes";
+ reg = <0xfc04c000 0x100>;
+ interrupts = <14 IRQ_TYPE_LEVEL_HIGH 0>;
+- dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))
+- AT91_XDMAC_DT_PERID(42)>,
+- <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))
+- AT91_XDMAC_DT_PERID(43)>;
++ dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
++ | AT91_XDMAC_DT_PERID(42))>,
++ <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
++ | AT91_XDMAC_DT_PERID(43))>;
+ dma-names = "tx", "rx";
+ clocks = <&tdes_clk>;
+ clock-names = "tdes_clk";
+@@ -1153,8 +1153,8 @@
+ compatible = "atmel,at91sam9g46-sha";
+ reg = <0xfc050000 0x100>;
+ interrupts = <15 IRQ_TYPE_LEVEL_HIGH 0>;
+- dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))
+- AT91_XDMAC_DT_PERID(44)>;
++ dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
++ | AT91_XDMAC_DT_PERID(44))>;
+ dma-names = "tx";
+ clocks = <&sha_clk>;
+ clock-names = "sha_clk";
+diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
+index cca5b8758185..f11d82527076 100644
+--- a/arch/arm/kernel/smp.c
++++ b/arch/arm/kernel/smp.c
+@@ -576,7 +576,7 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
+ if ((unsigned)ipinr < NR_IPI) {
+- trace_ipi_entry(ipi_types[ipinr]);
++ trace_ipi_entry_rcuidle(ipi_types[ipinr]);
+ __inc_irq_stat(cpu, ipi_irqs[ipinr]);
+ }
+
+@@ -635,7 +635,7 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
+ }
+
+ if ((unsigned)ipinr < NR_IPI)
+- trace_ipi_exit(ipi_types[ipinr]);
++ trace_ipi_exit_rcuidle(ipi_types[ipinr]);
+ set_irq_regs(old_regs);
+ }
+
+diff --git a/arch/arm/mach-dove/include/mach/irqs.h b/arch/arm/mach-dove/include/mach/irqs.h
+index 03d401d20453..3f29e6bca058 100644
+--- a/arch/arm/mach-dove/include/mach/irqs.h
++++ b/arch/arm/mach-dove/include/mach/irqs.h
+@@ -14,73 +14,73 @@
+ /*
+ * Dove Low Interrupt Controller
+ */
+-#define IRQ_DOVE_BRIDGE 0
+-#define IRQ_DOVE_H2C 1
+-#define IRQ_DOVE_C2H 2
+-#define IRQ_DOVE_NAND 3
+-#define IRQ_DOVE_PDMA 4
+-#define IRQ_DOVE_SPI1 5
+-#define IRQ_DOVE_SPI0 6
+-#define IRQ_DOVE_UART_0 7
+-#define IRQ_DOVE_UART_1 8
+-#define IRQ_DOVE_UART_2 9
+-#define IRQ_DOVE_UART_3 10
+-#define IRQ_DOVE_I2C 11
+-#define IRQ_DOVE_GPIO_0_7 12
+-#define IRQ_DOVE_GPIO_8_15 13
+-#define IRQ_DOVE_GPIO_16_23 14
+-#define IRQ_DOVE_PCIE0_ERR 15
+-#define IRQ_DOVE_PCIE0 16
+-#define IRQ_DOVE_PCIE1_ERR 17
+-#define IRQ_DOVE_PCIE1 18
+-#define IRQ_DOVE_I2S0 19
+-#define IRQ_DOVE_I2S0_ERR 20
+-#define IRQ_DOVE_I2S1 21
+-#define IRQ_DOVE_I2S1_ERR 22
+-#define IRQ_DOVE_USB_ERR 23
+-#define IRQ_DOVE_USB0 24
+-#define IRQ_DOVE_USB1 25
+-#define IRQ_DOVE_GE00_RX 26
+-#define IRQ_DOVE_GE00_TX 27
+-#define IRQ_DOVE_GE00_MISC 28
+-#define IRQ_DOVE_GE00_SUM 29
+-#define IRQ_DOVE_GE00_ERR 30
+-#define IRQ_DOVE_CRYPTO 31
++#define IRQ_DOVE_BRIDGE (1 + 0)
++#define IRQ_DOVE_H2C (1 + 1)
++#define IRQ_DOVE_C2H (1 + 2)
++#define IRQ_DOVE_NAND (1 + 3)
++#define IRQ_DOVE_PDMA (1 + 4)
++#define IRQ_DOVE_SPI1 (1 + 5)
++#define IRQ_DOVE_SPI0 (1 + 6)
++#define IRQ_DOVE_UART_0 (1 + 7)
++#define IRQ_DOVE_UART_1 (1 + 8)
++#define IRQ_DOVE_UART_2 (1 + 9)
++#define IRQ_DOVE_UART_3 (1 + 10)
++#define IRQ_DOVE_I2C (1 + 11)
++#define IRQ_DOVE_GPIO_0_7 (1 + 12)
++#define IRQ_DOVE_GPIO_8_15 (1 + 13)
++#define IRQ_DOVE_GPIO_16_23 (1 + 14)
++#define IRQ_DOVE_PCIE0_ERR (1 + 15)
++#define IRQ_DOVE_PCIE0 (1 + 16)
++#define IRQ_DOVE_PCIE1_ERR (1 + 17)
++#define IRQ_DOVE_PCIE1 (1 + 18)
++#define IRQ_DOVE_I2S0 (1 + 19)
++#define IRQ_DOVE_I2S0_ERR (1 + 20)
++#define IRQ_DOVE_I2S1 (1 + 21)
++#define IRQ_DOVE_I2S1_ERR (1 + 22)
++#define IRQ_DOVE_USB_ERR (1 + 23)
++#define IRQ_DOVE_USB0 (1 + 24)
++#define IRQ_DOVE_USB1 (1 + 25)
++#define IRQ_DOVE_GE00_RX (1 + 26)
++#define IRQ_DOVE_GE00_TX (1 + 27)
++#define IRQ_DOVE_GE00_MISC (1 + 28)
++#define IRQ_DOVE_GE00_SUM (1 + 29)
++#define IRQ_DOVE_GE00_ERR (1 + 30)
++#define IRQ_DOVE_CRYPTO (1 + 31)
+
+ /*
+ * Dove High Interrupt Controller
+ */
+-#define IRQ_DOVE_AC97 32
+-#define IRQ_DOVE_PMU 33
+-#define IRQ_DOVE_CAM 34
+-#define IRQ_DOVE_SDIO0 35
+-#define IRQ_DOVE_SDIO1 36
+-#define IRQ_DOVE_SDIO0_WAKEUP 37
+-#define IRQ_DOVE_SDIO1_WAKEUP 38
+-#define IRQ_DOVE_XOR_00 39
+-#define IRQ_DOVE_XOR_01 40
+-#define IRQ_DOVE_XOR0_ERR 41
+-#define IRQ_DOVE_XOR_10 42
+-#define IRQ_DOVE_XOR_11 43
+-#define IRQ_DOVE_XOR1_ERR 44
+-#define IRQ_DOVE_LCD_DCON 45
+-#define IRQ_DOVE_LCD1 46
+-#define IRQ_DOVE_LCD0 47
+-#define IRQ_DOVE_GPU 48
+-#define IRQ_DOVE_PERFORM_MNTR 49
+-#define IRQ_DOVE_VPRO_DMA1 51
+-#define IRQ_DOVE_SSP_TIMER 54
+-#define IRQ_DOVE_SSP 55
+-#define IRQ_DOVE_MC_L2_ERR 56
+-#define IRQ_DOVE_CRYPTO_ERR 59
+-#define IRQ_DOVE_GPIO_24_31 60
+-#define IRQ_DOVE_HIGH_GPIO 61
+-#define IRQ_DOVE_SATA 62
++#define IRQ_DOVE_AC97 (1 + 32)
++#define IRQ_DOVE_PMU (1 + 33)
++#define IRQ_DOVE_CAM (1 + 34)
++#define IRQ_DOVE_SDIO0 (1 + 35)
++#define IRQ_DOVE_SDIO1 (1 + 36)
++#define IRQ_DOVE_SDIO0_WAKEUP (1 + 37)
++#define IRQ_DOVE_SDIO1_WAKEUP (1 + 38)
++#define IRQ_DOVE_XOR_00 (1 + 39)
++#define IRQ_DOVE_XOR_01 (1 + 40)
++#define IRQ_DOVE_XOR0_ERR (1 + 41)
++#define IRQ_DOVE_XOR_10 (1 + 42)
++#define IRQ_DOVE_XOR_11 (1 + 43)
++#define IRQ_DOVE_XOR1_ERR (1 + 44)
++#define IRQ_DOVE_LCD_DCON (1 + 45)
++#define IRQ_DOVE_LCD1 (1 + 46)
++#define IRQ_DOVE_LCD0 (1 + 47)
++#define IRQ_DOVE_GPU (1 + 48)
++#define IRQ_DOVE_PERFORM_MNTR (1 + 49)
++#define IRQ_DOVE_VPRO_DMA1 (1 + 51)
++#define IRQ_DOVE_SSP_TIMER (1 + 54)
++#define IRQ_DOVE_SSP (1 + 55)
++#define IRQ_DOVE_MC_L2_ERR (1 + 56)
++#define IRQ_DOVE_CRYPTO_ERR (1 + 59)
++#define IRQ_DOVE_GPIO_24_31 (1 + 60)
++#define IRQ_DOVE_HIGH_GPIO (1 + 61)
++#define IRQ_DOVE_SATA (1 + 62)
+
+ /*
+ * DOVE General Purpose Pins
+ */
+-#define IRQ_DOVE_GPIO_START 64
++#define IRQ_DOVE_GPIO_START 65
+ #define NR_GPIO_IRQS 64
+
+ /*
+diff --git a/arch/arm/mach-dove/irq.c b/arch/arm/mach-dove/irq.c
+index 4a5a7aedcb76..df0223f76fa9 100644
+--- a/arch/arm/mach-dove/irq.c
++++ b/arch/arm/mach-dove/irq.c
+@@ -126,14 +126,14 @@ __exception_irq_entry dove_legacy_handle_irq(struct pt_regs *regs)
+ stat = readl_relaxed(dove_irq_base + IRQ_CAUSE_LOW_OFF);
+ stat &= readl_relaxed(dove_irq_base + IRQ_MASK_LOW_OFF);
+ if (stat) {
+- unsigned int hwirq = __fls(stat);
++ unsigned int hwirq = 1 + __fls(stat);
+ handle_IRQ(hwirq, regs);
+ return;
+ }
+ stat = readl_relaxed(dove_irq_base + IRQ_CAUSE_HIGH_OFF);
+ stat &= readl_relaxed(dove_irq_base + IRQ_MASK_HIGH_OFF);
+ if (stat) {
+- unsigned int hwirq = 32 + __fls(stat);
++ unsigned int hwirq = 33 + __fls(stat);
+ handle_IRQ(hwirq, regs);
+ return;
+ }
+@@ -144,8 +144,8 @@ void __init dove_init_irq(void)
+ {
+ int i;
+
+- orion_irq_init(0, IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF);
+- orion_irq_init(32, IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF);
++ orion_irq_init(1, IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF);
++ orion_irq_init(33, IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF);
+
+ #ifdef CONFIG_MULTI_IRQ_HANDLER
+ set_handle_irq(dove_legacy_handle_irq);
+diff --git a/arch/arm/vdso/vdsomunge.c b/arch/arm/vdso/vdsomunge.c
+index 9005b07296c8..aedec81d1198 100644
+--- a/arch/arm/vdso/vdsomunge.c
++++ b/arch/arm/vdso/vdsomunge.c
+@@ -45,13 +45,11 @@
+ * it does.
+ */
+
+-#define _GNU_SOURCE
+-
+ #include <byteswap.h>
+ #include <elf.h>
+ #include <errno.h>
+-#include <error.h>
+ #include <fcntl.h>
++#include <stdarg.h>
+ #include <stdbool.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+@@ -82,11 +80,25 @@
+ #define EF_ARM_ABI_FLOAT_HARD 0x400
+ #endif
+
++static int failed;
++static const char *argv0;
+ static const char *outfile;
+
++static void fail(const char *fmt, ...)
++{
++ va_list ap;
++
++ failed = 1;
++ fprintf(stderr, "%s: ", argv0);
++ va_start(ap, fmt);
++ vfprintf(stderr, fmt, ap);
++ va_end(ap);
++ exit(EXIT_FAILURE);
++}
++
+ static void cleanup(void)
+ {
+- if (error_message_count > 0 && outfile != NULL)
++ if (failed && outfile != NULL)
+ unlink(outfile);
+ }
+
+@@ -119,68 +131,66 @@ int main(int argc, char **argv)
+ int infd;
+
+ atexit(cleanup);
++ argv0 = argv[0];
+
+ if (argc != 3)
+- error(EXIT_FAILURE, 0, "Usage: %s [infile] [outfile]", argv[0]);
++ fail("Usage: %s [infile] [outfile]\n", argv[0]);
+
+ infile = argv[1];
+ outfile = argv[2];
+
+ infd = open(infile, O_RDONLY);
+ if (infd < 0)
+- error(EXIT_FAILURE, errno, "Cannot open %s", infile);
++ fail("Cannot open %s: %s\n", infile, strerror(errno));
+
+ if (fstat(infd, &stat) != 0)
+- error(EXIT_FAILURE, errno, "Failed stat for %s", infile);
++ fail("Failed stat for %s: %s\n", infile, strerror(errno));
+
+ inbuf = mmap(NULL, stat.st_size, PROT_READ, MAP_PRIVATE, infd, 0);
+ if (inbuf == MAP_FAILED)
+- error(EXIT_FAILURE, errno, "Failed to map %s", infile);
++ fail("Failed to map %s: %s\n", infile, strerror(errno));
+
+ close(infd);
+
+ inhdr = inbuf;
+
+ if (memcmp(&inhdr->e_ident, ELFMAG, SELFMAG) != 0)
+- error(EXIT_FAILURE, 0, "Not an ELF file");
++ fail("Not an ELF file\n");
+
+ if (inhdr->e_ident[EI_CLASS] != ELFCLASS32)
+- error(EXIT_FAILURE, 0, "Unsupported ELF class");
++ fail("Unsupported ELF class\n");
+
+ swap = inhdr->e_ident[EI_DATA] != HOST_ORDER;
+
+ if (read_elf_half(inhdr->e_type, swap) != ET_DYN)
+- error(EXIT_FAILURE, 0, "Not a shared object");
++ fail("Not a shared object\n");
+
+- if (read_elf_half(inhdr->e_machine, swap) != EM_ARM) {
+- error(EXIT_FAILURE, 0, "Unsupported architecture %#x",
+- inhdr->e_machine);
+- }
++ if (read_elf_half(inhdr->e_machine, swap) != EM_ARM)
++ fail("Unsupported architecture %#x\n", inhdr->e_machine);
+
+ e_flags = read_elf_word(inhdr->e_flags, swap);
+
+ if (EF_ARM_EABI_VERSION(e_flags) != EF_ARM_EABI_VER5) {
+- error(EXIT_FAILURE, 0, "Unsupported EABI version %#x",
+- EF_ARM_EABI_VERSION(e_flags));
++ fail("Unsupported EABI version %#x\n",
++ EF_ARM_EABI_VERSION(e_flags));
+ }
+
+ if (e_flags & EF_ARM_ABI_FLOAT_HARD)
+- error(EXIT_FAILURE, 0,
+- "Unexpected hard-float flag set in e_flags");
++ fail("Unexpected hard-float flag set in e_flags\n");
+
+ clear_soft_float = !!(e_flags & EF_ARM_ABI_FLOAT_SOFT);
+
+ outfd = open(outfile, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
+ if (outfd < 0)
+- error(EXIT_FAILURE, errno, "Cannot open %s", outfile);
++ fail("Cannot open %s: %s\n", outfile, strerror(errno));
+
+ if (ftruncate(outfd, stat.st_size) != 0)
+- error(EXIT_FAILURE, errno, "Cannot truncate %s", outfile);
++ fail("Cannot truncate %s: %s\n", outfile, strerror(errno));
+
+ outbuf = mmap(NULL, stat.st_size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ outfd, 0);
+ if (outbuf == MAP_FAILED)
+- error(EXIT_FAILURE, errno, "Failed to map %s", outfile);
++ fail("Failed to map %s: %s\n", outfile, strerror(errno));
+
+ close(outfd);
+
+@@ -195,7 +205,7 @@ int main(int argc, char **argv)
+ }
+
+ if (msync(outbuf, stat.st_size, MS_SYNC) != 0)
+- error(EXIT_FAILURE, errno, "Failed to sync %s", outfile);
++ fail("Failed to sync %s: %s\n", outfile, strerror(errno));
+
+ return EXIT_SUCCESS;
+ }
+diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
+index 2cb008177252..d3a202b85ba6 100644
+--- a/arch/arm64/kernel/smp.c
++++ b/arch/arm64/kernel/smp.c
+@@ -569,7 +569,7 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
+ if ((unsigned)ipinr < NR_IPI) {
+- trace_ipi_entry(ipi_types[ipinr]);
++ trace_ipi_entry_rcuidle(ipi_types[ipinr]);
+ __inc_irq_stat(cpu, ipi_irqs[ipinr]);
+ }
+
+@@ -612,7 +612,7 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
+ }
+
+ if ((unsigned)ipinr < NR_IPI)
+- trace_ipi_exit(ipi_types[ipinr]);
++ trace_ipi_exit_rcuidle(ipi_types[ipinr]);
+ set_irq_regs(old_regs);
+ }
+
+diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
+index 2de9d2e59d96..0eeb4f0930a0 100644
+--- a/arch/arm64/mm/hugetlbpage.c
++++ b/arch/arm64/mm/hugetlbpage.c
+@@ -40,13 +40,13 @@ int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
+
+ int pmd_huge(pmd_t pmd)
+ {
+- return !(pmd_val(pmd) & PMD_TABLE_BIT);
++ return pmd_val(pmd) && !(pmd_val(pmd) & PMD_TABLE_BIT);
+ }
+
+ int pud_huge(pud_t pud)
+ {
+ #ifndef __PAGETABLE_PMD_FOLDED
+- return !(pud_val(pud) & PUD_TABLE_BIT);
++ return pud_val(pud) && !(pud_val(pud) & PUD_TABLE_BIT);
+ #else
+ return 0;
+ #endif
+diff --git a/arch/arm64/net/bpf_jit.h b/arch/arm64/net/bpf_jit.h
+index de0a81a539a0..98a26ce82d26 100644
+--- a/arch/arm64/net/bpf_jit.h
++++ b/arch/arm64/net/bpf_jit.h
+@@ -110,6 +110,10 @@
+ /* Rd = Rn >> shift; signed */
+ #define A64_ASR(sf, Rd, Rn, shift) A64_SBFM(sf, Rd, Rn, shift, (sf) ? 63 : 31)
+
++/* Zero extend */
++#define A64_UXTH(sf, Rd, Rn) A64_UBFM(sf, Rd, Rn, 0, 15)
++#define A64_UXTW(sf, Rd, Rn) A64_UBFM(sf, Rd, Rn, 0, 31)
++
+ /* Move wide (immediate) */
+ #define A64_MOVEW(sf, Rd, imm16, shift, type) \
+ aarch64_insn_gen_movewide(Rd, imm16, shift, \
+diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
+index dc6a4842683a..c047598b09e0 100644
+--- a/arch/arm64/net/bpf_jit_comp.c
++++ b/arch/arm64/net/bpf_jit_comp.c
+@@ -113,9 +113,9 @@ static inline void emit_a64_mov_i(const int is64, const int reg,
+ static inline int bpf2a64_offset(int bpf_to, int bpf_from,
+ const struct jit_ctx *ctx)
+ {
+- int to = ctx->offset[bpf_to + 1];
++ int to = ctx->offset[bpf_to];
+ /* -1 to account for the Branch instruction */
+- int from = ctx->offset[bpf_from + 1] - 1;
++ int from = ctx->offset[bpf_from] - 1;
+
+ return to - from;
+ }
+@@ -289,23 +289,41 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
+ case BPF_ALU | BPF_END | BPF_FROM_BE:
+ #ifdef CONFIG_CPU_BIG_ENDIAN
+ if (BPF_SRC(code) == BPF_FROM_BE)
+- break;
++ goto emit_bswap_uxt;
+ #else /* !CONFIG_CPU_BIG_ENDIAN */
+ if (BPF_SRC(code) == BPF_FROM_LE)
+- break;
++ goto emit_bswap_uxt;
+ #endif
+ switch (imm) {
+ case 16:
+ emit(A64_REV16(is64, dst, dst), ctx);
++ /* zero-extend 16 bits into 64 bits */
++ emit(A64_UXTH(is64, dst, dst), ctx);
+ break;
+ case 32:
+ emit(A64_REV32(is64, dst, dst), ctx);
++ /* upper 32 bits already cleared */
+ break;
+ case 64:
+ emit(A64_REV64(dst, dst), ctx);
+ break;
+ }
+ break;
++emit_bswap_uxt:
++ switch (imm) {
++ case 16:
++ /* zero-extend 16 bits into 64 bits */
++ emit(A64_UXTH(is64, dst, dst), ctx);
++ break;
++ case 32:
++ /* zero-extend 32 bits into 64 bits */
++ emit(A64_UXTW(is64, dst, dst), ctx);
++ break;
++ case 64:
++ /* nop */
++ break;
++ }
++ break;
+ /* dst = imm */
+ case BPF_ALU | BPF_MOV | BPF_K:
+ case BPF_ALU64 | BPF_MOV | BPF_K:
+@@ -640,10 +658,11 @@ static int build_body(struct jit_ctx *ctx)
+ const struct bpf_insn *insn = &prog->insnsi[i];
+ int ret;
+
++ ret = build_insn(insn, ctx);
++
+ if (ctx->image == NULL)
+ ctx->offset[i] = ctx->idx;
+
+- ret = build_insn(insn, ctx);
+ if (ret > 0) {
+ i++;
+ continue;
+diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
+index 33013dfcd3e1..5c68c85d5dbe 100644
+--- a/arch/m68k/Kconfig.cpu
++++ b/arch/m68k/Kconfig.cpu
+@@ -125,6 +125,13 @@ endif # M68KCLASSIC
+
+ if COLDFIRE
+
++choice
++ prompt "ColdFire SoC type"
++ default M520x
++ help
++ Select the type of ColdFire System-on-Chip (SoC) that you want
++ to build for.
++
+ config M5206
+ bool "MCF5206"
+ depends on !MMU
+@@ -174,9 +181,6 @@ config M525x
+ help
+ Freescale (Motorola) Coldfire 5251/5253 processor support.
+
+-config M527x
+- bool
+-
+ config M5271
+ bool "MCF5271"
+ depends on !MMU
+@@ -223,9 +227,6 @@ config M5307
+ help
+ Motorola ColdFire 5307 processor support.
+
+-config M53xx
+- bool
+-
+ config M532x
+ bool "MCF532x"
+ depends on !MMU
+@@ -251,9 +252,6 @@ config M5407
+ help
+ Motorola ColdFire 5407 processor support.
+
+-config M54xx
+- bool
+-
+ config M547x
+ bool "MCF547x"
+ select M54xx
+@@ -280,6 +278,17 @@ config M5441x
+ help
+ Freescale Coldfire 54410/54415/54416/54417/54418 processor support.
+
++endchoice
++
++config M527x
++ bool
++
++config M53xx
++ bool
++
++config M54xx
++ bool
++
+ endif # COLDFIRE
+
+
+@@ -416,22 +425,10 @@ config HAVE_MBAR
+ config HAVE_IPSBAR
+ bool
+
+-config CLOCK_SET
+- bool "Enable setting the CPU clock frequency"
+- depends on COLDFIRE
+- default n
+- help
+- On some CPU's you do not need to know what the core CPU clock
+- frequency is. On these you can disable clock setting. On some
+- traditional 68K parts, and on all ColdFire parts you need to set
+- the appropriate CPU clock frequency. On these devices many of the
+- onboard peripherals derive their timing from the master CPU clock
+- frequency.
+-
+ config CLOCK_FREQ
+ int "Set the core clock frequency"
+ default "66666666"
+- depends on CLOCK_SET
++ depends on COLDFIRE
+ help
+ Define the CPU clock frequency in use. This is the core clock
+ frequency, it may or may not be the same as the external clock
+diff --git a/arch/m68k/include/asm/coldfire.h b/arch/m68k/include/asm/coldfire.h
+index c94557b91448..50aa4dac9ca2 100644
+--- a/arch/m68k/include/asm/coldfire.h
++++ b/arch/m68k/include/asm/coldfire.h
+@@ -19,7 +19,7 @@
+ * in any case new boards come along from time to time that have yet
+ * another different clocking frequency.
+ */
+-#ifdef CONFIG_CLOCK_SET
++#ifdef CONFIG_CLOCK_FREQ
+ #define MCF_CLK CONFIG_CLOCK_FREQ
+ #else
+ #error "Don't know what your ColdFire CPU clock frequency is??"
+diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
+index e5a693b16da2..443f44de1020 100644
+--- a/arch/openrisc/Kconfig
++++ b/arch/openrisc/Kconfig
+@@ -17,6 +17,7 @@ config OPENRISC
+ select GENERIC_IRQ_SHOW
+ select GENERIC_IOMAP
+ select GENERIC_CPU_DEVICES
++ select HAVE_UID16
+ select GENERIC_ATOMIC64
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_STRNCPY_FROM_USER
+@@ -31,9 +32,6 @@ config MMU
+ config HAVE_DMA_ATTRS
+ def_bool y
+
+-config UID16
+- def_bool y
+-
+ config RWSEM_GENERIC_SPINLOCK
+ def_bool y
+
+diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
+index 9d518d693b4b..844b06d67df4 100644
+--- a/arch/x86/mm/mmap.c
++++ b/arch/x86/mm/mmap.c
+@@ -126,3 +126,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
+ mm->get_unmapped_area = arch_get_unmapped_area_topdown;
+ }
+ }
++
++const char *arch_vma_name(struct vm_area_struct *vma)
++{
++ if (vma->vm_flags & VM_MPX)
++ return "[mpx]";
++ return NULL;
++}
+diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c
+index c439ec478216..4d1c11c07fe1 100644
+--- a/arch/x86/mm/mpx.c
++++ b/arch/x86/mm/mpx.c
+@@ -18,26 +18,9 @@
+ #include <asm/processor.h>
+ #include <asm/fpu-internal.h>
+
+-static const char *mpx_mapping_name(struct vm_area_struct *vma)
+-{
+- return "[mpx]";
+-}
+-
+-static struct vm_operations_struct mpx_vma_ops = {
+- .name = mpx_mapping_name,
+-};
+-
+-static int is_mpx_vma(struct vm_area_struct *vma)
+-{
+- return (vma->vm_ops == &mpx_vma_ops);
+-}
+-
+ /*
+ * This is really a simplified "vm_mmap". it only handles MPX
+ * bounds tables (the bounds directory is user-allocated).
+- *
+- * Later on, we use the vma->vm_ops to uniquely identify these
+- * VMAs.
+ */
+ static unsigned long mpx_mmap(unsigned long len)
+ {
+@@ -83,7 +66,6 @@ static unsigned long mpx_mmap(unsigned long len)
+ ret = -ENOMEM;
+ goto out;
+ }
+- vma->vm_ops = &mpx_vma_ops;
+
+ if (vm_flags & VM_LOCKED) {
+ up_write(&mm->mmap_sem);
+@@ -661,7 +643,7 @@ static int zap_bt_entries(struct mm_struct *mm,
+ * so stop immediately and return an error. This
+ * probably results in a SIGSEGV.
+ */
+- if (!is_mpx_vma(vma))
++ if (!(vma->vm_flags & VM_MPX))
+ return -EINVAL;
+
+ len = min(vma->vm_end, end) - addr;
+diff --git a/block/bio.c b/block/bio.c
+index f66a4eae16ee..4441522ca339 100644
+--- a/block/bio.c
++++ b/block/bio.c
+@@ -1814,8 +1814,9 @@ EXPORT_SYMBOL(bio_endio_nodec);
+ * Allocates and returns a new bio which represents @sectors from the start of
+ * @bio, and updates @bio to represent the remaining sectors.
+ *
+- * The newly allocated bio will point to @bio's bi_io_vec; it is the caller's
+- * responsibility to ensure that @bio is not freed before the split.
++ * Unless this is a discard request the newly allocated bio will point
++ * to @bio's bi_io_vec; it is the caller's responsibility to ensure that
++ * @bio is not freed before the split.
+ */
+ struct bio *bio_split(struct bio *bio, int sectors,
+ gfp_t gfp, struct bio_set *bs)
+@@ -1825,7 +1826,15 @@ struct bio *bio_split(struct bio *bio, int sectors,
+ BUG_ON(sectors <= 0);
+ BUG_ON(sectors >= bio_sectors(bio));
+
+- split = bio_clone_fast(bio, gfp, bs);
++ /*
++ * Discards need a mutable bio_vec to accommodate the payload
++ * required by the DSM TRIM and UNMAP commands.
++ */
++ if (bio->bi_rw & REQ_DISCARD)
++ split = bio_clone_bioset(bio, gfp, bs);
++ else
++ split = bio_clone_fast(bio, gfp, bs);
++
+ if (!split)
+ return NULL;
+
+diff --git a/crypto/asymmetric_keys/asymmetric_keys.h b/crypto/asymmetric_keys/asymmetric_keys.h
+index f97330886d58..3f5b537ab33e 100644
+--- a/crypto/asymmetric_keys/asymmetric_keys.h
++++ b/crypto/asymmetric_keys/asymmetric_keys.h
+@@ -11,6 +11,9 @@
+
+ extern struct asymmetric_key_id *asymmetric_key_hex_to_key_id(const char *id);
+
++extern int __asymmetric_key_hex_to_key_id(const char *id,
++ struct asymmetric_key_id *match_id,
++ size_t hexlen);
+ static inline
+ const struct asymmetric_key_ids *asymmetric_key_ids(const struct key *key)
+ {
+diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c
+index bcbbbd794e1d..b0e4ed23d668 100644
+--- a/crypto/asymmetric_keys/asymmetric_type.c
++++ b/crypto/asymmetric_keys/asymmetric_type.c
+@@ -104,6 +104,15 @@ static bool asymmetric_match_key_ids(
+ return false;
+ }
+
++/* helper function can be called directly with pre-allocated memory */
++inline int __asymmetric_key_hex_to_key_id(const char *id,
++ struct asymmetric_key_id *match_id,
++ size_t hexlen)
++{
++ match_id->len = hexlen;
++ return hex2bin(match_id->data, id, hexlen);
++}
++
+ /**
+ * asymmetric_key_hex_to_key_id - Convert a hex string into a key ID.
+ * @id: The ID as a hex string.
+@@ -111,21 +120,20 @@ static bool asymmetric_match_key_ids(
+ struct asymmetric_key_id *asymmetric_key_hex_to_key_id(const char *id)
+ {
+ struct asymmetric_key_id *match_id;
+- size_t hexlen;
++ size_t asciihexlen;
+ int ret;
+
+ if (!*id)
+ return ERR_PTR(-EINVAL);
+- hexlen = strlen(id);
+- if (hexlen & 1)
++ asciihexlen = strlen(id);
++ if (asciihexlen & 1)
+ return ERR_PTR(-EINVAL);
+
+- match_id = kmalloc(sizeof(struct asymmetric_key_id) + hexlen / 2,
++ match_id = kmalloc(sizeof(struct asymmetric_key_id) + asciihexlen / 2,
+ GFP_KERNEL);
+ if (!match_id)
+ return ERR_PTR(-ENOMEM);
+- match_id->len = hexlen / 2;
+- ret = hex2bin(match_id->data, id, hexlen / 2);
++ ret = __asymmetric_key_hex_to_key_id(id, match_id, asciihexlen / 2);
+ if (ret < 0) {
+ kfree(match_id);
+ return ERR_PTR(-EINVAL);
+diff --git a/crypto/asymmetric_keys/x509_public_key.c b/crypto/asymmetric_keys/x509_public_key.c
+index a6c42031628e..24f17e6c5904 100644
+--- a/crypto/asymmetric_keys/x509_public_key.c
++++ b/crypto/asymmetric_keys/x509_public_key.c
+@@ -28,17 +28,30 @@ static bool use_builtin_keys;
+ static struct asymmetric_key_id *ca_keyid;
+
+ #ifndef MODULE
++static struct {
++ struct asymmetric_key_id id;
++ unsigned char data[10];
++} cakey;
++
+ static int __init ca_keys_setup(char *str)
+ {
+ if (!str) /* default system keyring */
+ return 1;
+
+ if (strncmp(str, "id:", 3) == 0) {
+- struct asymmetric_key_id *p;
+- p = asymmetric_key_hex_to_key_id(str + 3);
+- if (p == ERR_PTR(-EINVAL))
+- pr_err("Unparsable hex string in ca_keys\n");
+- else if (!IS_ERR(p))
++ struct asymmetric_key_id *p = &cakey.id;
++ size_t hexlen = (strlen(str) - 3) / 2;
++ int ret;
++
++ if (hexlen == 0 || hexlen > sizeof(cakey.data)) {
++ pr_err("Missing or invalid ca_keys id\n");
++ return 1;
++ }
++
++ ret = __asymmetric_key_hex_to_key_id(str + 3, p, hexlen);
++ if (ret < 0)
++ pr_err("Unparsable ca_keys id hex string\n");
++ else
+ ca_keyid = p; /* owner key 'id:xxxxxx' */
+ } else if (strcmp(str, "builtin") == 0) {
+ use_builtin_keys = true;
+diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
+index 37fb19047603..73f056a597a9 100644
+--- a/drivers/acpi/acpi_lpss.c
++++ b/drivers/acpi/acpi_lpss.c
+@@ -352,13 +352,16 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
+ pdata->mmio_size = resource_size(rentry->res);
+ pdata->mmio_base = ioremap(rentry->res->start,
+ pdata->mmio_size);
+- if (!pdata->mmio_base)
+- goto err_out;
+ break;
+ }
+
+ acpi_dev_free_resource_list(&resource_list);
+
++ if (!pdata->mmio_base) {
++ ret = -ENOMEM;
++ goto err_out;
++ }
++
+ pdata->dev_desc = dev_desc;
+
+ if (dev_desc->setup)
+diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
+index 87b27521fcac..7f50dd9eb1d0 100644
+--- a/drivers/acpi/acpica/aclocal.h
++++ b/drivers/acpi/acpica/aclocal.h
+@@ -213,6 +213,7 @@ struct acpi_table_list {
+
+ #define ACPI_TABLE_INDEX_DSDT (0)
+ #define ACPI_TABLE_INDEX_FACS (1)
++#define ACPI_TABLE_INDEX_X_FACS (2)
+
+ struct acpi_find_context {
+ char *search_for;
+diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
+index 7d2486005e3f..05be59c772c7 100644
+--- a/drivers/acpi/acpica/tbfadt.c
++++ b/drivers/acpi/acpica/tbfadt.c
+@@ -350,9 +350,18 @@ void acpi_tb_parse_fadt(u32 table_index)
+ /* If Hardware Reduced flag is set, there is no FACS */
+
+ if (!acpi_gbl_reduced_hardware) {
+- acpi_tb_install_fixed_table((acpi_physical_address)
+- acpi_gbl_FADT.Xfacs, ACPI_SIG_FACS,
+- ACPI_TABLE_INDEX_FACS);
++ if (acpi_gbl_FADT.facs) {
++ acpi_tb_install_fixed_table((acpi_physical_address)
++ acpi_gbl_FADT.facs,
++ ACPI_SIG_FACS,
++ ACPI_TABLE_INDEX_FACS);
++ }
++ if (acpi_gbl_FADT.Xfacs) {
++ acpi_tb_install_fixed_table((acpi_physical_address)
++ acpi_gbl_FADT.Xfacs,
++ ACPI_SIG_FACS,
++ ACPI_TABLE_INDEX_X_FACS);
++ }
+ }
+ }
+
+@@ -491,13 +500,9 @@ static void acpi_tb_convert_fadt(void)
+ acpi_gbl_FADT.header.length = sizeof(struct acpi_table_fadt);
+
+ /*
+- * Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary.
++ * Expand the 32-bit DSDT addresses to 64-bit as necessary.
+ * Later ACPICA code will always use the X 64-bit field.
+ */
+- acpi_gbl_FADT.Xfacs = acpi_tb_select_address("FACS",
+- acpi_gbl_FADT.facs,
+- acpi_gbl_FADT.Xfacs);
+-
+ acpi_gbl_FADT.Xdsdt = acpi_tb_select_address("DSDT",
+ acpi_gbl_FADT.dsdt,
+ acpi_gbl_FADT.Xdsdt);
+diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
+index 6559a58439c5..2fb1afaacc6d 100644
+--- a/drivers/acpi/acpica/tbutils.c
++++ b/drivers/acpi/acpica/tbutils.c
+@@ -68,7 +68,8 @@ acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size);
+
+ acpi_status acpi_tb_initialize_facs(void)
+ {
+- acpi_status status;
++ struct acpi_table_facs *facs32;
++ struct acpi_table_facs *facs64;
+
+ /* If Hardware Reduced flag is set, there is no FACS */
+
+@@ -77,11 +78,22 @@ acpi_status acpi_tb_initialize_facs(void)
+ return (AE_OK);
+ }
+
+- status = acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
+- ACPI_CAST_INDIRECT_PTR(struct
+- acpi_table_header,
+- &acpi_gbl_FACS));
+- return (status);
++ (void)acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
++ ACPI_CAST_INDIRECT_PTR(struct
++ acpi_table_header,
++ &facs32));
++ (void)acpi_get_table_by_index(ACPI_TABLE_INDEX_X_FACS,
++ ACPI_CAST_INDIRECT_PTR(struct
++ acpi_table_header,
++ &facs64));
++
++ if (acpi_gbl_use32_bit_facs_addresses) {
++ acpi_gbl_FACS = facs32 ? facs32 : facs64;
++ } else {
++ acpi_gbl_FACS = facs64 ? facs64 : facs32;
++ }
++
++ return (AE_OK);
+ }
+ #endif /* !ACPI_REDUCED_HARDWARE */
+
+@@ -101,7 +113,7 @@ acpi_status acpi_tb_initialize_facs(void)
+ u8 acpi_tb_tables_loaded(void)
+ {
+
+- if (acpi_gbl_root_table_list.current_table_count >= 3) {
++ if (acpi_gbl_root_table_list.current_table_count >= 4) {
+ return (TRUE);
+ }
+
+@@ -357,11 +369,11 @@ acpi_status __init acpi_tb_parse_root_table(acpi_physical_address rsdp_address)
+ table_entry = ACPI_ADD_PTR(u8, table, sizeof(struct acpi_table_header));
+
+ /*
+- * First two entries in the table array are reserved for the DSDT
+- * and FACS, which are not actually present in the RSDT/XSDT - they
+- * come from the FADT
++ * First three entries in the table array are reserved for the DSDT
++ * and 32bit/64bit FACS, which are not actually present in the
++ * RSDT/XSDT - they come from the FADT
+ */
+- acpi_gbl_root_table_list.current_table_count = 2;
++ acpi_gbl_root_table_list.current_table_count = 3;
+
+ /* Initialize the root table array from the RSDT/XSDT */
+
+diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
+index aadb3002a2dd..b63e35d6d1bf 100644
+--- a/drivers/acpi/acpica/tbxfload.c
++++ b/drivers/acpi/acpica/tbxfload.c
+@@ -166,7 +166,8 @@ static acpi_status acpi_tb_load_namespace(void)
+
+ (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+ for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
+- if ((!ACPI_COMPARE_NAME
++ if (!acpi_gbl_root_table_list.tables[i].address ||
++ (!ACPI_COMPARE_NAME
+ (&(acpi_gbl_root_table_list.tables[i].signature),
+ ACPI_SIG_SSDT)
+ &&
+diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c
+index 083a76891889..42a32a66ef22 100644
+--- a/drivers/acpi/acpica/utxfinit.c
++++ b/drivers/acpi/acpica/utxfinit.c
+@@ -179,10 +179,12 @@ acpi_status __init acpi_enable_subsystem(u32 flags)
+ * Obtain a permanent mapping for the FACS. This is required for the
+ * Global Lock and the Firmware Waking Vector
+ */
+- status = acpi_tb_initialize_facs();
+- if (ACPI_FAILURE(status)) {
+- ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
+- return_ACPI_STATUS(status);
++ if (!(flags & ACPI_NO_FACS_INIT)) {
++ status = acpi_tb_initialize_facs();
++ if (ACPI_FAILURE(status)) {
++ ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
++ return_ACPI_STATUS(status);
++ }
+ }
+ #endif /* !ACPI_REDUCED_HARDWARE */
+
+diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
+index 5226a8b921ae..98f5316aad72 100644
+--- a/drivers/acpi/osl.c
++++ b/drivers/acpi/osl.c
+@@ -175,10 +175,14 @@ static void __init acpi_request_region (struct acpi_generic_address *gas,
+ if (!addr || !length)
+ return;
+
+- acpi_reserve_region(addr, length, gas->space_id, 0, desc);
++ /* Resources are never freed */
++ if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
++ request_region(addr, length, desc);
++ else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
++ request_mem_region(addr, length, desc);
+ }
+
+-static void __init acpi_reserve_resources(void)
++static int __init acpi_reserve_resources(void)
+ {
+ acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length,
+ "ACPI PM1a_EVT_BLK");
+@@ -207,7 +211,10 @@ static void __init acpi_reserve_resources(void)
+ if (!(acpi_gbl_FADT.gpe1_block_length & 0x1))
+ acpi_request_region(&acpi_gbl_FADT.xgpe1_block,
+ acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK");
++
++ return 0;
+ }
++fs_initcall_sync(acpi_reserve_resources);
+
+ void acpi_os_printf(const char *fmt, ...)
+ {
+@@ -1838,7 +1845,6 @@ acpi_status __init acpi_os_initialize(void)
+
+ acpi_status __init acpi_os_initialize1(void)
+ {
+- acpi_reserve_resources();
+ kacpid_wq = alloc_workqueue("kacpid", 0, 1);
+ kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1);
+ kacpi_hotplug_wq = alloc_ordered_workqueue("kacpi_hotplug", 0);
+diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
+index fcb7807ea8b7..f1c966e05078 100644
+--- a/drivers/acpi/resource.c
++++ b/drivers/acpi/resource.c
+@@ -26,7 +26,6 @@
+ #include <linux/device.h>
+ #include <linux/export.h>
+ #include <linux/ioport.h>
+-#include <linux/list.h>
+ #include <linux/slab.h>
+
+ #ifdef CONFIG_X86
+@@ -194,6 +193,7 @@ static bool acpi_decode_space(struct resource_win *win,
+ u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16;
+ bool wp = addr->info.mem.write_protect;
+ u64 len = attr->address_length;
++ u64 start, end, offset = 0;
+ struct resource *res = &win->res;
+
+ /*
+@@ -205,9 +205,6 @@ static bool acpi_decode_space(struct resource_win *win,
+ pr_debug("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n",
+ addr->min_address_fixed, addr->max_address_fixed, len);
+
+- res->start = attr->minimum;
+- res->end = attr->maximum;
+-
+ /*
+ * For bridges that translate addresses across the bridge,
+ * translation_offset is the offset that must be added to the
+@@ -215,12 +212,22 @@ static bool acpi_decode_space(struct resource_win *win,
+ * primary side. Non-bridge devices must list 0 for all Address
+ * Translation offset bits.
+ */
+- if (addr->producer_consumer == ACPI_PRODUCER) {
+- res->start += attr->translation_offset;
+- res->end += attr->translation_offset;
+- } else if (attr->translation_offset) {
++ if (addr->producer_consumer == ACPI_PRODUCER)
++ offset = attr->translation_offset;
++ else if (attr->translation_offset)
+ pr_debug("ACPI: translation_offset(%lld) is invalid for non-bridge device.\n",
+ attr->translation_offset);
++ start = attr->minimum + offset;
++ end = attr->maximum + offset;
++
++ win->offset = offset;
++ res->start = start;
++ res->end = end;
++ if (sizeof(resource_size_t) < sizeof(u64) &&
++ (offset != win->offset || start != res->start || end != res->end)) {
++ pr_warn("acpi resource window ([%#llx-%#llx] ignored, not CPU addressable)\n",
++ attr->minimum, attr->maximum);
++ return false;
+ }
+
+ switch (addr->resource_type) {
+@@ -237,8 +244,6 @@ static bool acpi_decode_space(struct resource_win *win,
+ return false;
+ }
+
+- win->offset = attr->translation_offset;
+-
+ if (addr->producer_consumer == ACPI_PRODUCER)
+ res->flags |= IORESOURCE_WINDOW;
+
+@@ -622,162 +627,3 @@ int acpi_dev_filter_resource_type(struct acpi_resource *ares,
+ return (type & types) ? 0 : 1;
+ }
+ EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
+-
+-struct reserved_region {
+- struct list_head node;
+- u64 start;
+- u64 end;
+-};
+-
+-static LIST_HEAD(reserved_io_regions);
+-static LIST_HEAD(reserved_mem_regions);
+-
+-static int request_range(u64 start, u64 end, u8 space_id, unsigned long flags,
+- char *desc)
+-{
+- unsigned int length = end - start + 1;
+- struct resource *res;
+-
+- res = space_id == ACPI_ADR_SPACE_SYSTEM_IO ?
+- request_region(start, length, desc) :
+- request_mem_region(start, length, desc);
+- if (!res)
+- return -EIO;
+-
+- res->flags &= ~flags;
+- return 0;
+-}
+-
+-static int add_region_before(u64 start, u64 end, u8 space_id,
+- unsigned long flags, char *desc,
+- struct list_head *head)
+-{
+- struct reserved_region *reg;
+- int error;
+-
+- reg = kmalloc(sizeof(*reg), GFP_KERNEL);
+- if (!reg)
+- return -ENOMEM;
+-
+- error = request_range(start, end, space_id, flags, desc);
+- if (error)
+- return error;
+-
+- reg->start = start;
+- reg->end = end;
+- list_add_tail(®->node, head);
+- return 0;
+-}
+-
+-/**
+- * acpi_reserve_region - Reserve an I/O or memory region as a system resource.
+- * @start: Starting address of the region.
+- * @length: Length of the region.
+- * @space_id: Identifier of address space to reserve the region from.
+- * @flags: Resource flags to clear for the region after requesting it.
+- * @desc: Region description (for messages).
+- *
+- * Reserve an I/O or memory region as a system resource to prevent others from
+- * using it. If the new region overlaps with one of the regions (in the given
+- * address space) already reserved by this routine, only the non-overlapping
+- * parts of it will be reserved.
+- *
+- * Returned is either 0 (success) or a negative error code indicating a resource
+- * reservation problem. It is the code of the first encountered error, but the
+- * routine doesn't abort until it has attempted to request all of the parts of
+- * the new region that don't overlap with other regions reserved previously.
+- *
+- * The resources requested by this routine are never released.
+- */
+-int acpi_reserve_region(u64 start, unsigned int length, u8 space_id,
+- unsigned long flags, char *desc)
+-{
+- struct list_head *regions;
+- struct reserved_region *reg;
+- u64 end = start + length - 1;
+- int ret = 0, error = 0;
+-
+- if (space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+- regions = &reserved_io_regions;
+- else if (space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
+- regions = &reserved_mem_regions;
+- else
+- return -EINVAL;
+-
+- if (list_empty(regions))
+- return add_region_before(start, end, space_id, flags, desc, regions);
+-
+- list_for_each_entry(reg, regions, node)
+- if (reg->start == end + 1) {
+- /* The new region can be prepended to this one. */
+- ret = request_range(start, end, space_id, flags, desc);
+- if (!ret)
+- reg->start = start;
+-
+- return ret;
+- } else if (reg->start > end) {
+- /* No overlap. Add the new region here and get out. */
+- return add_region_before(start, end, space_id, flags,
+- desc, ®->node);
+- } else if (reg->end == start - 1) {
+- goto combine;
+- } else if (reg->end >= start) {
+- goto overlap;
+- }
+-
+- /* The new region goes after the last existing one. */
+- return add_region_before(start, end, space_id, flags, desc, regions);
+-
+- overlap:
+- /*
+- * The new region overlaps an existing one.
+- *
+- * The head part of the new region immediately preceding the existing
+- * overlapping one can be combined with it right away.
+- */
+- if (reg->start > start) {
+- error = request_range(start, reg->start - 1, space_id, flags, desc);
+- if (error)
+- ret = error;
+- else
+- reg->start = start;
+- }
+-
+- combine:
+- /*
+- * The new region is adjacent to an existing one. If it extends beyond
+- * that region all the way to the next one, it is possible to combine
+- * all three of them.
+- */
+- while (reg->end < end) {
+- struct reserved_region *next = NULL;
+- u64 a = reg->end + 1, b = end;
+-
+- if (!list_is_last(®->node, regions)) {
+- next = list_next_entry(reg, node);
+- if (next->start <= end)
+- b = next->start - 1;
+- }
+- error = request_range(a, b, space_id, flags, desc);
+- if (!error) {
+- if (next && next->start == b + 1) {
+- reg->end = next->end;
+- list_del(&next->node);
+- kfree(next);
+- } else {
+- reg->end = end;
+- break;
+- }
+- } else if (next) {
+- if (!ret)
+- ret = error;
+-
+- reg = next;
+- } else {
+- break;
+- }
+- }
+-
+- return ret ? ret : error;
+-}
+-EXPORT_SYMBOL_GPL(acpi_reserve_region);
+diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
+index 577849c6611a..41c99be9bd41 100644
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -2478,6 +2478,10 @@ int ata_dev_configure(struct ata_device *dev)
+ dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
+ dev->max_sectors);
+
++ if (dev->horkage & ATA_HORKAGE_MAX_SEC_1024)
++ dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_1024,
++ dev->max_sectors);
++
+ if (dev->horkage & ATA_HORKAGE_MAX_SEC_LBA48)
+ dev->max_sectors = ATA_MAX_SECTORS_LBA48;
+
+@@ -4146,6 +4150,12 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ { "Slimtype DVD A DS8A8SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 },
+ { "Slimtype DVD A DS8A9SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 },
+
++ /*
++ * Causes silent data corruption with higher max sects.
++ * http://lkml.kernel.org/g/x49wpy40ysk.fsf@segfault.boston.devel.redhat.com
++ */
++ { "ST380013AS", "3.20", ATA_HORKAGE_MAX_SEC_1024 },
++
+ /* Devices we expect to fail diagnostics */
+
+ /* Devices where NCQ should be avoided */
+@@ -4174,9 +4184,10 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ { "ST3320[68]13AS", "SD1[5-9]", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+- /* Seagate Momentus SpinPoint M8 seem to have FPMDA_AA issues */
++ /* drives which fail FPDMA_AA activation (some may freeze afterwards) */
+ { "ST1000LM024 HN-M101MBB", "2AR10001", ATA_HORKAGE_BROKEN_FPDMA_AA },
+ { "ST1000LM024 HN-M101MBB", "2BA30001", ATA_HORKAGE_BROKEN_FPDMA_AA },
++ { "VB0250EAVER", "HPG7", ATA_HORKAGE_BROKEN_FPDMA_AA },
+
+ /* Blacklist entries taken from Silicon Image 3124/3132
+ Windows driver .inf file - also several Linux problem reports */
+@@ -4225,11 +4236,11 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ { "PIONEER DVD-RW DVR-216D", NULL, ATA_HORKAGE_NOSETXFER },
+
+ /* devices that don't properly handle queued TRIM commands */
+- { "Micron_M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
++ { "Micron_M500_*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+ { "Crucial_CT*M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+- { "Micron_M5[15]0*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
++ { "Micron_M5[15]0_*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+ { "Crucial_CT*M550*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+@@ -4238,6 +4249,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
+ { "Samsung SSD 8*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM, },
+
++ /* devices that don't properly handle TRIM commands */
++ { "SuperSSpeed S238*", NULL, ATA_HORKAGE_NOTRIM, },
++
+ /*
+ * As defined, the DRAT (Deterministic Read After Trim) and RZAT
+ * (Return Zero After Trim) flags in the ATA Command Set are
+@@ -4501,7 +4515,8 @@ static unsigned int ata_dev_set_xfermode(struct ata_device *dev)
+ else /* In the ancient relic department - skip all of this */
+ return 0;
+
+- err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
++ /* On some disks, this command causes spin-up, so we need longer timeout */
++ err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 15000);
+
+ DPRINTK("EXIT, err_mask=%x\n", err_mask);
+ return err_mask;
+diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
+index cf0022ec07f2..7465031a893c 100644
+--- a/drivers/ata/libata-eh.c
++++ b/drivers/ata/libata-eh.c
+@@ -1507,16 +1507,21 @@ unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
+ {
+ struct ata_taskfile tf;
+ unsigned int err_mask;
++ bool dma = false;
+
+ DPRINTK("read log page - log 0x%x, page 0x%x\n", log, page);
+
++retry:
+ ata_tf_init(dev, &tf);
+- if (dev->dma_mode && ata_id_has_read_log_dma_ext(dev->id)) {
++ if (dev->dma_mode && ata_id_has_read_log_dma_ext(dev->id) &&
++ !(dev->horkage & ATA_HORKAGE_NO_NCQ_LOG)) {
+ tf.command = ATA_CMD_READ_LOG_DMA_EXT;
+ tf.protocol = ATA_PROT_DMA;
++ dma = true;
+ } else {
+ tf.command = ATA_CMD_READ_LOG_EXT;
+ tf.protocol = ATA_PROT_PIO;
++ dma = false;
+ }
+ tf.lbal = log;
+ tf.lbam = page;
+@@ -1527,6 +1532,12 @@ unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
+ err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
+ buf, sectors * ATA_SECT_SIZE, 0);
+
++ if (err_mask && dma) {
++ dev->horkage |= ATA_HORKAGE_NO_NCQ_LOG;
++ ata_dev_warn(dev, "READ LOG DMA EXT failed, trying unqueued\n");
++ goto retry;
++ }
++
+ DPRINTK("EXIT, err_mask=%x\n", err_mask);
+ return err_mask;
+ }
+diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
+index 3131adcc1f87..641a61a59e89 100644
+--- a/drivers/ata/libata-scsi.c
++++ b/drivers/ata/libata-scsi.c
+@@ -2568,7 +2568,8 @@ static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
+ rbuf[14] = (lowest_aligned >> 8) & 0x3f;
+ rbuf[15] = lowest_aligned;
+
+- if (ata_id_has_trim(args->id)) {
++ if (ata_id_has_trim(args->id) &&
++ !(dev->horkage & ATA_HORKAGE_NOTRIM)) {
+ rbuf[14] |= 0x80; /* LBPME */
+
+ if (ata_id_has_zero_after_trim(args->id) &&
+diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c
+index 3227b7c8a05f..e2d94972962d 100644
+--- a/drivers/ata/libata-transport.c
++++ b/drivers/ata/libata-transport.c
+@@ -560,6 +560,29 @@ show_ata_dev_gscr(struct device *dev,
+
+ static DEVICE_ATTR(gscr, S_IRUGO, show_ata_dev_gscr, NULL);
+
++static ssize_t
++show_ata_dev_trim(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ struct ata_device *ata_dev = transport_class_to_dev(dev);
++ unsigned char *mode;
++
++ if (!ata_id_has_trim(ata_dev->id))
++ mode = "unsupported";
++ else if (ata_dev->horkage & ATA_HORKAGE_NOTRIM)
++ mode = "forced_unsupported";
++ else if (ata_dev->horkage & ATA_HORKAGE_NO_NCQ_TRIM)
++ mode = "forced_unqueued";
++ else if (ata_fpdma_dsm_supported(ata_dev))
++ mode = "queued";
++ else
++ mode = "unqueued";
++
++ return snprintf(buf, 20, "%s\n", mode);
++}
++
++static DEVICE_ATTR(trim, S_IRUGO, show_ata_dev_trim, NULL);
++
+ static DECLARE_TRANSPORT_CLASS(ata_dev_class,
+ "ata_device", NULL, NULL, NULL);
+
+@@ -733,6 +756,7 @@ struct scsi_transport_template *ata_attach_transport(void)
+ SETUP_DEV_ATTRIBUTE(ering);
+ SETUP_DEV_ATTRIBUTE(id);
+ SETUP_DEV_ATTRIBUTE(gscr);
++ SETUP_DEV_ATTRIBUTE(trim);
+ BUG_ON(count > ATA_DEV_ATTRS);
+ i->dev_attrs[count] = NULL;
+
+diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
+index 171841ad1008..4d1d9de4f9bf 100644
+--- a/drivers/base/firmware_class.c
++++ b/drivers/base/firmware_class.c
+@@ -544,10 +544,8 @@ static void fw_dev_release(struct device *dev)
+ kfree(fw_priv);
+ }
+
+-static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
++static int do_firmware_uevent(struct firmware_priv *fw_priv, struct kobj_uevent_env *env)
+ {
+- struct firmware_priv *fw_priv = to_firmware_priv(dev);
+-
+ if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->buf->fw_id))
+ return -ENOMEM;
+ if (add_uevent_var(env, "TIMEOUT=%i", loading_timeout))
+@@ -558,6 +556,18 @@ static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
+ return 0;
+ }
+
++static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
++{
++ struct firmware_priv *fw_priv = to_firmware_priv(dev);
++ int err = 0;
++
++ mutex_lock(&fw_lock);
++ if (fw_priv->buf)
++ err = do_firmware_uevent(fw_priv, env);
++ mutex_unlock(&fw_lock);
++ return err;
++}
++
+ static struct class firmware_class = {
+ .name = "firmware",
+ .class_attrs = firmware_class_attrs,
+diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
+index 7fdd0172605a..c7b0fcebf168 100644
+--- a/drivers/base/power/clock_ops.c
++++ b/drivers/base/power/clock_ops.c
+@@ -93,7 +93,7 @@ static int __pm_clk_add(struct device *dev, const char *con_id,
+ return -ENOMEM;
+ }
+ } else {
+- if (IS_ERR(ce->clk) || !__clk_get(clk)) {
++ if (IS_ERR(clk) || !__clk_get(clk)) {
+ kfree(ce);
+ return -ENOENT;
+ }
+diff --git a/drivers/block/loop.c b/drivers/block/loop.c
+index d7173cb1ea76..cef6fa83a274 100644
+--- a/drivers/block/loop.c
++++ b/drivers/block/loop.c
+@@ -86,8 +86,6 @@ static DEFINE_MUTEX(loop_index_mutex);
+ static int max_part;
+ static int part_shift;
+
+-static struct workqueue_struct *loop_wq;
+-
+ static int transfer_xor(struct loop_device *lo, int cmd,
+ struct page *raw_page, unsigned raw_off,
+ struct page *loop_page, unsigned loop_off,
+@@ -725,6 +723,12 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
+ size = get_loop_size(lo, file);
+ if ((loff_t)(sector_t)size != size)
+ goto out_putf;
++ error = -ENOMEM;
++ lo->wq = alloc_workqueue("kloopd%d",
++ WQ_MEM_RECLAIM | WQ_HIGHPRI | WQ_UNBOUND, 16,
++ lo->lo_number);
++ if (!lo->wq)
++ goto out_putf;
+
+ error = 0;
+
+@@ -872,6 +876,8 @@ static int loop_clr_fd(struct loop_device *lo)
+ lo->lo_flags = 0;
+ if (!part_shift)
+ lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
++ destroy_workqueue(lo->wq);
++ lo->wq = NULL;
+ mutex_unlock(&lo->lo_ctl_mutex);
+ /*
+ * Need not hold lo_ctl_mutex to fput backing file.
+@@ -1425,9 +1431,13 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
+ const struct blk_mq_queue_data *bd)
+ {
+ struct loop_cmd *cmd = blk_mq_rq_to_pdu(bd->rq);
++ struct loop_device *lo = cmd->rq->q->queuedata;
+
+ blk_mq_start_request(bd->rq);
+
++ if (lo->lo_state != Lo_bound)
++ return -EIO;
++
+ if (cmd->rq->cmd_flags & REQ_WRITE) {
+ struct loop_device *lo = cmd->rq->q->queuedata;
+ bool need_sched = true;
+@@ -1441,9 +1451,9 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
+ spin_unlock_irq(&lo->lo_lock);
+
+ if (need_sched)
+- queue_work(loop_wq, &lo->write_work);
++ queue_work(lo->wq, &lo->write_work);
+ } else {
+- queue_work(loop_wq, &cmd->read_work);
++ queue_work(lo->wq, &cmd->read_work);
+ }
+
+ return BLK_MQ_RQ_QUEUE_OK;
+@@ -1455,9 +1465,6 @@ static void loop_handle_cmd(struct loop_cmd *cmd)
+ struct loop_device *lo = cmd->rq->q->queuedata;
+ int ret = -EIO;
+
+- if (lo->lo_state != Lo_bound)
+- goto failed;
+-
+ if (write && (lo->lo_flags & LO_FLAGS_READ_ONLY))
+ goto failed;
+
+@@ -1806,13 +1813,6 @@ static int __init loop_init(void)
+ goto misc_out;
+ }
+
+- loop_wq = alloc_workqueue("kloopd",
+- WQ_MEM_RECLAIM | WQ_HIGHPRI | WQ_UNBOUND, 0);
+- if (!loop_wq) {
+- err = -ENOMEM;
+- goto misc_out;
+- }
+-
+ blk_register_region(MKDEV(LOOP_MAJOR, 0), range,
+ THIS_MODULE, loop_probe, NULL, NULL);
+
+@@ -1850,8 +1850,6 @@ static void __exit loop_exit(void)
+ blk_unregister_region(MKDEV(LOOP_MAJOR, 0), range);
+ unregister_blkdev(LOOP_MAJOR, "loop");
+
+- destroy_workqueue(loop_wq);
+-
+ misc_deregister(&loop_misc);
+ }
+
+diff --git a/drivers/block/loop.h b/drivers/block/loop.h
+index 301c27f8323f..49564edf5581 100644
+--- a/drivers/block/loop.h
++++ b/drivers/block/loop.h
+@@ -54,6 +54,7 @@ struct loop_device {
+ gfp_t old_gfp_mask;
+
+ spinlock_t lo_lock;
++ struct workqueue_struct *wq;
+ struct list_head write_cmd_head;
+ struct work_struct write_work;
+ bool write_started;
+diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
+index ec6c5c6e1ac9..53f253574abe 100644
+--- a/drivers/block/rbd.c
++++ b/drivers/block/rbd.c
+@@ -2001,11 +2001,11 @@ static struct rbd_obj_request *rbd_obj_request_create(const char *object_name,
+ rbd_assert(obj_request_type_valid(type));
+
+ size = strlen(object_name) + 1;
+- name = kmalloc(size, GFP_KERNEL);
++ name = kmalloc(size, GFP_NOIO);
+ if (!name)
+ return NULL;
+
+- obj_request = kmem_cache_zalloc(rbd_obj_request_cache, GFP_KERNEL);
++ obj_request = kmem_cache_zalloc(rbd_obj_request_cache, GFP_NOIO);
+ if (!obj_request) {
+ kfree(name);
+ return NULL;
+diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
+index 4bba86677adc..3f146c9911c1 100644
+--- a/drivers/bluetooth/btbcm.c
++++ b/drivers/bluetooth/btbcm.c
+@@ -378,12 +378,11 @@ int btbcm_setup_apple(struct hci_dev *hdev)
+
+ /* Read Verbose Config Version Info */
+ skb = btbcm_read_verbose_config(hdev);
+- if (IS_ERR(skb))
+- return PTR_ERR(skb);
+-
+- BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
+- get_unaligned_le16(skb->data + 5));
+- kfree_skb(skb);
++ if (!IS_ERR(skb)) {
++ BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
++ get_unaligned_le16(skb->data + 5));
++ kfree_skb(skb);
++ }
+
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index 420cc9f3eb76..c65501539224 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -268,7 +268,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
+
+ /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
+- { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
++ { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
+
+ /* Digianswer devices */
+ { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
+@@ -1993,6 +1993,8 @@ static int btusb_setup_intel(struct hci_dev *hdev)
+ }
+ fw_ptr = fw->data;
+
++ kfree_skb(skb);
++
+ /* This Intel specific command enables the manufacturer mode of the
+ * controller.
+ *
+@@ -2334,6 +2336,7 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
+ struct intel_boot_params *params;
+ const struct firmware *fw;
+ const u8 *fw_ptr;
++ u32 frag_len;
+ char fwname[64];
+ ktime_t calltime, delta, rettime;
+ unsigned long long duration;
+@@ -2540,24 +2543,33 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
+ }
+
+ fw_ptr = fw->data + 644;
++ frag_len = 0;
+
+ while (fw_ptr - fw->data < fw->size) {
+- struct hci_command_hdr *cmd = (void *)fw_ptr;
+- u8 cmd_len;
++ struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
+
+- cmd_len = sizeof(*cmd) + cmd->plen;
++ frag_len += sizeof(*cmd) + cmd->plen;
+
+- /* Send each command from the firmware data buffer as
+- * a single Data fragment.
++ /* The paramter length of the secure send command requires
++ * a 4 byte alignment. It happens so that the firmware file
++ * contains proper Intel_NOP commands to align the fragments
++ * as needed.
++ *
++ * Send set of commands with 4 byte alignment from the
++ * firmware data buffer as a single Data fragement.
+ */
+- err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
+- if (err < 0) {
+- BT_ERR("%s: Failed to send firmware data (%d)",
+- hdev->name, err);
+- goto done;
+- }
++ if (!(frag_len % 4)) {
++ err = btusb_intel_secure_send(hdev, 0x01, frag_len,
++ fw_ptr);
++ if (err < 0) {
++ BT_ERR("%s: Failed to send firmware data (%d)",
++ hdev->name, err);
++ goto done;
++ }
+
+- fw_ptr += cmd_len;
++ fw_ptr += frag_len;
++ frag_len = 0;
++ }
+ }
+
+ set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
+diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c
+index aaa0f2a87118..60397ec77ff7 100644
+--- a/drivers/bus/arm-ccn.c
++++ b/drivers/bus/arm-ccn.c
+@@ -212,7 +212,7 @@ static int arm_ccn_node_to_xp_port(int node)
+
+ static void arm_ccn_pmu_config_set(u64 *config, u32 node_xp, u32 type, u32 port)
+ {
+- *config &= ~((0xff << 0) | (0xff << 8) | (0xff << 24));
++ *config &= ~((0xff << 0) | (0xff << 8) | (0x3 << 24));
+ *config |= (node_xp << 0) | (type << 8) | (port << 24);
+ }
+
+diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
+index 0b4188b9af7c..c6dea3f6917b 100644
+--- a/drivers/char/agp/intel-gtt.c
++++ b/drivers/char/agp/intel-gtt.c
+@@ -581,7 +581,7 @@ static inline int needs_ilk_vtd_wa(void)
+ /* Query intel_iommu to see if we need the workaround. Presumably that
+ * was loaded first.
+ */
+- if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB ||
++ if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG ||
+ gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG) &&
+ intel_iommu_gfx_mapped)
+ return 1;
+diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
+index 283f00a7f036..1082d4bb016a 100644
+--- a/drivers/char/tpm/tpm-chip.c
++++ b/drivers/char/tpm/tpm-chip.c
+@@ -129,8 +129,9 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,
+
+ device_initialize(&chip->dev);
+
+- chip->cdev.owner = chip->pdev->driver->owner;
+ cdev_init(&chip->cdev, &tpm_fops);
++ chip->cdev.owner = chip->pdev->driver->owner;
++ chip->cdev.kobj.parent = &chip->dev.kobj;
+
+ return chip;
+ }
+diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
+index b26ceee3585e..1267322595da 100644
+--- a/drivers/char/tpm/tpm_crb.c
++++ b/drivers/char/tpm/tpm_crb.c
+@@ -233,6 +233,14 @@ static int crb_acpi_add(struct acpi_device *device)
+ return -ENODEV;
+ }
+
++ /* At least some versions of AMI BIOS have a bug that TPM2 table has
++ * zero address for the control area and therefore we must fail.
++ */
++ if (!buf->control_area_pa) {
++ dev_err(dev, "TPM2 ACPI table has a zero address for the control area\n");
++ return -EINVAL;
++ }
++
+ if (buf->hdr.length < sizeof(struct acpi_tpm2)) {
+ dev_err(dev, "TPM2 ACPI table has wrong size");
+ return -EINVAL;
+@@ -267,7 +275,7 @@ static int crb_acpi_add(struct acpi_device *device)
+
+ memcpy_fromio(&pa, &priv->cca->cmd_pa, 8);
+ pa = le64_to_cpu(pa);
+- priv->cmd = devm_ioremap_nocache(dev, le64_to_cpu(pa),
++ priv->cmd = devm_ioremap_nocache(dev, pa,
+ ioread32(&priv->cca->cmd_size));
+ if (!priv->cmd) {
+ dev_err(dev, "ioremap of the command buffer failed\n");
+@@ -276,7 +284,7 @@ static int crb_acpi_add(struct acpi_device *device)
+
+ memcpy_fromio(&pa, &priv->cca->rsp_pa, 8);
+ pa = le64_to_cpu(pa);
+- priv->rsp = devm_ioremap_nocache(dev, le64_to_cpu(pa),
++ priv->rsp = devm_ioremap_nocache(dev, pa,
+ ioread32(&priv->cca->rsp_size));
+ if (!priv->rsp) {
+ dev_err(dev, "ioremap of the response buffer failed\n");
+diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
+index 42ffa5e7a1e0..27ebf9511cb4 100644
+--- a/drivers/char/tpm/tpm_ibmvtpm.c
++++ b/drivers/char/tpm/tpm_ibmvtpm.c
+@@ -578,6 +578,9 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
+ goto cleanup;
+ }
+
++ ibmvtpm->dev = dev;
++ ibmvtpm->vdev = vio_dev;
++
+ crq_q = &ibmvtpm->crq_queue;
+ crq_q->crq_addr = (struct ibmvtpm_crq *)get_zeroed_page(GFP_KERNEL);
+ if (!crq_q->crq_addr) {
+@@ -622,8 +625,6 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
+
+ crq_q->index = 0;
+
+- ibmvtpm->dev = dev;
+- ibmvtpm->vdev = vio_dev;
+ TPM_VPRIV(chip) = (void *)ibmvtpm;
+
+ spin_lock_init(&ibmvtpm->rtce_lock);
+diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
+index 5b0f41868b42..9f9cadd00bc8 100644
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -230,11 +230,12 @@ static void clk_dump_one(struct seq_file *s, struct clk_core *c, int level)
+ if (!c)
+ return;
+
++ /* This should be JSON format, i.e. elements separated with a comma */
+ seq_printf(s, "\"%s\": { ", c->name);
+ seq_printf(s, "\"enable_count\": %d,", c->enable_count);
+ seq_printf(s, "\"prepare_count\": %d,", c->prepare_count);
+- seq_printf(s, "\"rate\": %lu", clk_core_get_rate(c));
+- seq_printf(s, "\"accuracy\": %lu", clk_core_get_accuracy(c));
++ seq_printf(s, "\"rate\": %lu,", clk_core_get_rate(c));
++ seq_printf(s, "\"accuracy\": %lu,", clk_core_get_accuracy(c));
+ seq_printf(s, "\"phase\": %d", clk_core_get_phase(c));
+ }
+
+diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c
+index b95d17fbb8d7..92936f0912d2 100644
+--- a/drivers/clk/qcom/clk-rcg2.c
++++ b/drivers/clk/qcom/clk-rcg2.c
+@@ -530,19 +530,16 @@ static int clk_pixel_set_rate(struct clk_hw *hw, unsigned long rate,
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ struct freq_tbl f = *rcg->freq_tbl;
+ const struct frac_entry *frac = frac_table_pixel;
+- unsigned long request, src_rate;
++ unsigned long request;
+ int delta = 100000;
+ u32 mask = BIT(rcg->hid_width) - 1;
+ u32 hid_div;
+- int index = qcom_find_src_index(hw, rcg->parent_map, f.src);
+- struct clk *parent = clk_get_parent_by_index(hw->clk, index);
+
+ for (; frac->num; frac++) {
+ request = (rate * frac->den) / frac->num;
+
+- src_rate = __clk_round_rate(parent, request);
+- if ((src_rate < (request - delta)) ||
+- (src_rate > (request + delta)))
++ if ((parent_rate < (request - delta)) ||
++ (parent_rate > (request + delta)))
+ continue;
+
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG,
+diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c
+index d86bc46b93bd..0a1df821860f 100644
+--- a/drivers/clk/ti/clk-dra7-atl.c
++++ b/drivers/clk/ti/clk-dra7-atl.c
+@@ -252,6 +252,11 @@ static int of_dra7_atl_clk_probe(struct platform_device *pdev)
+ }
+
+ clk = of_clk_get_from_provider(&clkspec);
++ if (IS_ERR(clk)) {
++ pr_err("%s: failed to get atl clock %d from provider\n",
++ __func__, i);
++ return PTR_ERR(clk);
++ }
+
+ cdesc = to_atl_desc(__clk_get_hw(clk));
+ cdesc->cinfo = cinfo;
+diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
+index 83564c9cfdbe..c844616028d2 100644
+--- a/drivers/clocksource/exynos_mct.c
++++ b/drivers/clocksource/exynos_mct.c
+@@ -466,15 +466,12 @@ static int exynos4_local_timer_setup(struct clock_event_device *evt)
+ exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET);
+
+ if (mct_int_type == MCT_INT_SPI) {
+- evt->irq = mct_irqs[MCT_L0_IRQ + cpu];
+- if (request_irq(evt->irq, exynos4_mct_tick_isr,
+- IRQF_TIMER | IRQF_NOBALANCING,
+- evt->name, mevt)) {
+- pr_err("exynos-mct: cannot register IRQ %d\n",
+- evt->irq);
++
++ if (evt->irq == -1)
+ return -EIO;
+- }
+- irq_force_affinity(mct_irqs[MCT_L0_IRQ + cpu], cpumask_of(cpu));
++
++ irq_force_affinity(evt->irq, cpumask_of(cpu));
++ enable_irq(evt->irq);
+ } else {
+ enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0);
+ }
+@@ -487,10 +484,12 @@ static int exynos4_local_timer_setup(struct clock_event_device *evt)
+ static void exynos4_local_timer_stop(struct clock_event_device *evt)
+ {
+ evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
+- if (mct_int_type == MCT_INT_SPI)
+- free_irq(evt->irq, this_cpu_ptr(&percpu_mct_tick));
+- else
++ if (mct_int_type == MCT_INT_SPI) {
++ if (evt->irq != -1)
++ disable_irq_nosync(evt->irq);
++ } else {
+ disable_percpu_irq(mct_irqs[MCT_L0_IRQ]);
++ }
+ }
+
+ static int exynos4_mct_cpu_notify(struct notifier_block *self,
+@@ -522,7 +521,7 @@ static struct notifier_block exynos4_mct_cpu_nb = {
+
+ static void __init exynos4_timer_resources(struct device_node *np, void __iomem *base)
+ {
+- int err;
++ int err, cpu;
+ struct mct_clock_event_device *mevt = this_cpu_ptr(&percpu_mct_tick);
+ struct clk *mct_clk, *tick_clk;
+
+@@ -549,7 +548,25 @@ static void __init exynos4_timer_resources(struct device_node *np, void __iomem
+ WARN(err, "MCT: can't request IRQ %d (%d)\n",
+ mct_irqs[MCT_L0_IRQ], err);
+ } else {
+- irq_set_affinity(mct_irqs[MCT_L0_IRQ], cpumask_of(0));
++ for_each_possible_cpu(cpu) {
++ int mct_irq = mct_irqs[MCT_L0_IRQ + cpu];
++ struct mct_clock_event_device *pcpu_mevt =
++ per_cpu_ptr(&percpu_mct_tick, cpu);
++
++ pcpu_mevt->evt.irq = -1;
++
++ irq_set_status_flags(mct_irq, IRQ_NOAUTOEN);
++ if (request_irq(mct_irq,
++ exynos4_mct_tick_isr,
++ IRQF_TIMER | IRQF_NOBALANCING,
++ pcpu_mevt->name, pcpu_mevt)) {
++ pr_err("exynos-mct: cannot register IRQ (cpu%d)\n",
++ cpu);
++
++ continue;
++ }
++ pcpu_mevt->evt.irq = mct_irq;
++ }
+ }
+
+ err = register_cpu_notifier(&exynos4_mct_cpu_nb);
+diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
+index 1c56001df676..50f1b422dee3 100644
+--- a/drivers/dma/mv_xor.c
++++ b/drivers/dma/mv_xor.c
+@@ -273,7 +273,8 @@ static void mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
+ dma_cookie_t cookie = 0;
+ int busy = mv_chan_is_busy(mv_chan);
+ u32 current_desc = mv_chan_get_current_desc(mv_chan);
+- int seen_current = 0;
++ int current_cleaned = 0;
++ struct mv_xor_desc *hw_desc;
+
+ dev_dbg(mv_chan_to_devp(mv_chan), "%s %d\n", __func__, __LINE__);
+ dev_dbg(mv_chan_to_devp(mv_chan), "current_desc %x\n", current_desc);
+@@ -285,38 +286,57 @@ static void mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
+
+ list_for_each_entry_safe(iter, _iter, &mv_chan->chain,
+ chain_node) {
+- prefetch(_iter);
+- prefetch(&_iter->async_tx);
+
+- /* do not advance past the current descriptor loaded into the
+- * hardware channel, subsequent descriptors are either in
+- * process or have not been submitted
+- */
+- if (seen_current)
+- break;
++ /* clean finished descriptors */
++ hw_desc = iter->hw_desc;
++ if (hw_desc->status & XOR_DESC_SUCCESS) {
++ cookie = mv_xor_run_tx_complete_actions(iter, mv_chan,
++ cookie);
+
+- /* stop the search if we reach the current descriptor and the
+- * channel is busy
+- */
+- if (iter->async_tx.phys == current_desc) {
+- seen_current = 1;
+- if (busy)
++ /* done processing desc, clean slot */
++ mv_xor_clean_slot(iter, mv_chan);
++
++ /* break if we did cleaned the current */
++ if (iter->async_tx.phys == current_desc) {
++ current_cleaned = 1;
++ break;
++ }
++ } else {
++ if (iter->async_tx.phys == current_desc) {
++ current_cleaned = 0;
+ break;
++ }
+ }
+-
+- cookie = mv_xor_run_tx_complete_actions(iter, mv_chan, cookie);
+-
+- if (mv_xor_clean_slot(iter, mv_chan))
+- break;
+ }
+
+ if ((busy == 0) && !list_empty(&mv_chan->chain)) {
+- struct mv_xor_desc_slot *chain_head;
+- chain_head = list_entry(mv_chan->chain.next,
+- struct mv_xor_desc_slot,
+- chain_node);
+-
+- mv_xor_start_new_chain(mv_chan, chain_head);
++ if (current_cleaned) {
++ /*
++ * current descriptor cleaned and removed, run
++ * from list head
++ */
++ iter = list_entry(mv_chan->chain.next,
++ struct mv_xor_desc_slot,
++ chain_node);
++ mv_xor_start_new_chain(mv_chan, iter);
++ } else {
++ if (!list_is_last(&iter->chain_node, &mv_chan->chain)) {
++ /*
++ * descriptors are still waiting after
++ * current, trigger them
++ */
++ iter = list_entry(iter->chain_node.next,
++ struct mv_xor_desc_slot,
++ chain_node);
++ mv_xor_start_new_chain(mv_chan, iter);
++ } else {
++ /*
++ * some descriptors are still waiting
++ * to be cleaned
++ */
++ tasklet_schedule(&mv_chan->irq_tasklet);
++ }
++ }
+ }
+
+ if (cookie > 0)
+diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h
+index 91958dba39a2..0e302b3a33ad 100644
+--- a/drivers/dma/mv_xor.h
++++ b/drivers/dma/mv_xor.h
+@@ -31,6 +31,7 @@
+ #define XOR_OPERATION_MODE_XOR 0
+ #define XOR_OPERATION_MODE_MEMCPY 2
+ #define XOR_DESCRIPTOR_SWAP BIT(14)
++#define XOR_DESC_SUCCESS 0x40000000
+
+ #define XOR_DESC_DMA_OWNED BIT(31)
+ #define XOR_DESC_EOD_INT_EN BIT(31)
+diff --git a/drivers/edac/octeon_edac-l2c.c b/drivers/edac/octeon_edac-l2c.c
+index 7e98084d3645..afea7fc625cc 100644
+--- a/drivers/edac/octeon_edac-l2c.c
++++ b/drivers/edac/octeon_edac-l2c.c
+@@ -151,7 +151,7 @@ static int octeon_l2c_probe(struct platform_device *pdev)
+ l2c->ctl_name = "octeon_l2c_err";
+
+
+- if (OCTEON_IS_MODEL(OCTEON_FAM_1_PLUS)) {
++ if (OCTEON_IS_OCTEON1PLUS()) {
+ union cvmx_l2t_err l2t_err;
+ union cvmx_l2d_err l2d_err;
+
+diff --git a/drivers/edac/octeon_edac-lmc.c b/drivers/edac/octeon_edac-lmc.c
+index bb19e0732681..cda6dab5067a 100644
+--- a/drivers/edac/octeon_edac-lmc.c
++++ b/drivers/edac/octeon_edac-lmc.c
+@@ -234,7 +234,7 @@ static int octeon_lmc_edac_probe(struct platform_device *pdev)
+ layers[0].size = 1;
+ layers[0].is_virt_csrow = false;
+
+- if (OCTEON_IS_MODEL(OCTEON_FAM_1_PLUS)) {
++ if (OCTEON_IS_OCTEON1PLUS()) {
+ union cvmx_lmcx_mem_cfg0 cfg0;
+
+ cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(0));
+diff --git a/drivers/edac/octeon_edac-pc.c b/drivers/edac/octeon_edac-pc.c
+index 0f83c33a7d1f..2ab6cf24c959 100644
+--- a/drivers/edac/octeon_edac-pc.c
++++ b/drivers/edac/octeon_edac-pc.c
+@@ -73,7 +73,7 @@ static int co_cache_error_event(struct notifier_block *this,
+ edac_device_handle_ce(p->ed, cpu, 0, "dcache");
+
+ /* Clear the error indication */
+- if (OCTEON_IS_MODEL(OCTEON_FAM_2))
++ if (OCTEON_IS_OCTEON2())
+ write_octeon_c0_dcacheerr(1);
+ else
+ write_octeon_c0_dcacheerr(0);
+diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
+index 97b1616aa391..bba843c2b0ac 100644
+--- a/drivers/firmware/dmi_scan.c
++++ b/drivers/firmware/dmi_scan.c
+@@ -89,9 +89,9 @@ static void dmi_table(u8 *buf,
+
+ /*
+ * Stop when we have seen all the items the table claimed to have
+- * (SMBIOS < 3.0 only) OR we reach an end-of-table marker OR we run
+- * off the end of the table (should never happen but sometimes does
+- * on bogus implementations.)
++ * (SMBIOS < 3.0 only) OR we reach an end-of-table marker (SMBIOS
++ * >= 3.0 only) OR we run off the end of the table (should never
++ * happen but sometimes does on bogus implementations.)
+ */
+ while ((!dmi_num || i < dmi_num) &&
+ (data - buf + sizeof(struct dmi_header)) <= dmi_len) {
+@@ -110,8 +110,13 @@ static void dmi_table(u8 *buf,
+
+ /*
+ * 7.45 End-of-Table (Type 127) [SMBIOS reference spec v3.0.0]
++ * For tables behind a 64-bit entry point, we have no item
++ * count and no exact table length, so stop on end-of-table
++ * marker. For tables behind a 32-bit entry point, we have
++ * seen OEM structures behind the end-of-table marker on
++ * some systems, so don't trust it.
+ */
+- if (dm->type == DMI_ENTRY_END_OF_TABLE)
++ if (!dmi_num && dm->type == DMI_ENTRY_END_OF_TABLE)
+ break;
+
+ data += 2;
+diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
+index 9d2f053382e1..63a09e4079f3 100644
+--- a/drivers/gpu/drm/bridge/ptn3460.c
++++ b/drivers/gpu/drm/bridge/ptn3460.c
+@@ -15,6 +15,7 @@
+
+ #include <linux/delay.h>
+ #include <linux/gpio.h>
++#include <linux/gpio/consumer.h>
+ #include <linux/i2c.h>
+ #include <linux/module.h>
+ #include <linux/of.h>
+diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
+index 3007b44e6bf4..800a025dd062 100644
+--- a/drivers/gpu/drm/drm_crtc.c
++++ b/drivers/gpu/drm/drm_crtc.c
+@@ -2749,8 +2749,11 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+- /* For some reason crtc x/y offsets are signed internally. */
+- if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
++ /*
++ * Universal plane src offsets are only 16.16, prevent havoc for
++ * drivers using universal plane code internally.
++ */
++ if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
+ return -ERANGE;
+
+ drm_modeset_lock_all(dev);
+@@ -5048,12 +5051,9 @@ void drm_mode_config_reset(struct drm_device *dev)
+ if (encoder->funcs->reset)
+ encoder->funcs->reset(encoder);
+
+- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+- connector->status = connector_status_unknown;
+-
++ list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+ if (connector->funcs->reset)
+ connector->funcs->reset(connector);
+- }
+ }
+ EXPORT_SYMBOL(drm_mode_config_reset);
+
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index 132581ca4ad8..778bbb6425b8 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -867,8 +867,16 @@ static void drm_dp_destroy_port(struct kref *kref)
+ port->vcpi.num_slots = 0;
+
+ kfree(port->cached_edid);
+- if (port->connector)
+- (*port->mgr->cbs->destroy_connector)(mgr, port->connector);
++
++ /* we can't destroy the connector here, as
++ we might be holding the mode_config.mutex
++ from an EDID retrieval */
++ if (port->connector) {
++ mutex_lock(&mgr->destroy_connector_lock);
++ list_add(&port->connector->destroy_list, &mgr->destroy_connector_list);
++ mutex_unlock(&mgr->destroy_connector_lock);
++ schedule_work(&mgr->destroy_connector_work);
++ }
+ drm_dp_port_teardown_pdt(port, port->pdt);
+
+ if (!port->input && port->vcpi.vcpi > 0)
+@@ -1163,6 +1171,8 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_
+ struct drm_dp_mst_port *port;
+ int i;
+ /* find the port by iterating down */
++
++ mutex_lock(&mgr->lock);
+ mstb = mgr->mst_primary;
+
+ for (i = 0; i < lct - 1; i++) {
+@@ -1182,6 +1192,7 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_
+ }
+ }
+ kref_get(&mstb->kref);
++ mutex_unlock(&mgr->lock);
+ return mstb;
+ }
+
+@@ -1189,7 +1200,7 @@ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *m
+ struct drm_dp_mst_branch *mstb)
+ {
+ struct drm_dp_mst_port *port;
+-
++ struct drm_dp_mst_branch *mstb_child;
+ if (!mstb->link_address_sent) {
+ drm_dp_send_link_address(mgr, mstb);
+ mstb->link_address_sent = true;
+@@ -1204,17 +1215,31 @@ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *m
+ if (!port->available_pbn)
+ drm_dp_send_enum_path_resources(mgr, mstb, port);
+
+- if (port->mstb)
+- drm_dp_check_and_send_link_address(mgr, port->mstb);
++ if (port->mstb) {
++ mstb_child = drm_dp_get_validated_mstb_ref(mgr, port->mstb);
++ if (mstb_child) {
++ drm_dp_check_and_send_link_address(mgr, mstb_child);
++ drm_dp_put_mst_branch_device(mstb_child);
++ }
++ }
+ }
+ }
+
+ static void drm_dp_mst_link_probe_work(struct work_struct *work)
+ {
+ struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, work);
++ struct drm_dp_mst_branch *mstb;
+
+- drm_dp_check_and_send_link_address(mgr, mgr->mst_primary);
+-
++ mutex_lock(&mgr->lock);
++ mstb = mgr->mst_primary;
++ if (mstb) {
++ kref_get(&mstb->kref);
++ }
++ mutex_unlock(&mgr->lock);
++ if (mstb) {
++ drm_dp_check_and_send_link_address(mgr, mstb);
++ drm_dp_put_mst_branch_device(mstb);
++ }
+ }
+
+ static bool drm_dp_validate_guid(struct drm_dp_mst_topology_mgr *mgr,
+@@ -2632,6 +2657,30 @@ static void drm_dp_tx_work(struct work_struct *work)
+ mutex_unlock(&mgr->qlock);
+ }
+
++static void drm_dp_destroy_connector_work(struct work_struct *work)
++{
++ struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, destroy_connector_work);
++ struct drm_connector *connector;
++
++ /*
++ * Not a regular list traverse as we have to drop the destroy
++ * connector lock before destroying the connector, to avoid AB->BA
++ * ordering between this lock and the config mutex.
++ */
++ for (;;) {
++ mutex_lock(&mgr->destroy_connector_lock);
++ connector = list_first_entry_or_null(&mgr->destroy_connector_list, struct drm_connector, destroy_list);
++ if (!connector) {
++ mutex_unlock(&mgr->destroy_connector_lock);
++ break;
++ }
++ list_del(&connector->destroy_list);
++ mutex_unlock(&mgr->destroy_connector_lock);
++
++ mgr->cbs->destroy_connector(mgr, connector);
++ }
++}
++
+ /**
+ * drm_dp_mst_topology_mgr_init - initialise a topology manager
+ * @mgr: manager struct to initialise
+@@ -2651,10 +2700,13 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr,
+ mutex_init(&mgr->lock);
+ mutex_init(&mgr->qlock);
+ mutex_init(&mgr->payload_lock);
++ mutex_init(&mgr->destroy_connector_lock);
+ INIT_LIST_HEAD(&mgr->tx_msg_upq);
+ INIT_LIST_HEAD(&mgr->tx_msg_downq);
++ INIT_LIST_HEAD(&mgr->destroy_connector_list);
+ INIT_WORK(&mgr->work, drm_dp_mst_link_probe_work);
+ INIT_WORK(&mgr->tx_work, drm_dp_tx_work);
++ INIT_WORK(&mgr->destroy_connector_work, drm_dp_destroy_connector_work);
+ init_waitqueue_head(&mgr->tx_waitq);
+ mgr->dev = dev;
+ mgr->aux = aux;
+@@ -2679,6 +2731,7 @@ EXPORT_SYMBOL(drm_dp_mst_topology_mgr_init);
+ */
+ void drm_dp_mst_topology_mgr_destroy(struct drm_dp_mst_topology_mgr *mgr)
+ {
++ flush_work(&mgr->destroy_connector_work);
+ mutex_lock(&mgr->payload_lock);
+ kfree(mgr->payloads);
+ mgr->payloads = NULL;
+diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
+index aa8bbb460c57..9cfcd0aef0df 100644
+--- a/drivers/gpu/drm/drm_ioc32.c
++++ b/drivers/gpu/drm/drm_ioc32.c
+@@ -70,6 +70,8 @@
+
+ #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
+
++#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
++
+ typedef struct drm_version_32 {
+ int version_major; /**< Major version */
+ int version_minor; /**< Minor version */
+@@ -1016,6 +1018,63 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
+ return 0;
+ }
+
++typedef struct drm_mode_fb_cmd232 {
++ u32 fb_id;
++ u32 width;
++ u32 height;
++ u32 pixel_format;
++ u32 flags;
++ u32 handles[4];
++ u32 pitches[4];
++ u32 offsets[4];
++ u64 modifier[4];
++} __attribute__((packed)) drm_mode_fb_cmd232_t;
++
++static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
++ unsigned long arg)
++{
++ struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
++ struct drm_mode_fb_cmd232 req32;
++ struct drm_mode_fb_cmd2 __user *req64;
++ int i;
++ int err;
++
++ if (copy_from_user(&req32, argp, sizeof(req32)))
++ return -EFAULT;
++
++ req64 = compat_alloc_user_space(sizeof(*req64));
++
++ if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
++ || __put_user(req32.width, &req64->width)
++ || __put_user(req32.height, &req64->height)
++ || __put_user(req32.pixel_format, &req64->pixel_format)
++ || __put_user(req32.flags, &req64->flags))
++ return -EFAULT;
++
++ for (i = 0; i < 4; i++) {
++ if (__put_user(req32.handles[i], &req64->handles[i]))
++ return -EFAULT;
++ if (__put_user(req32.pitches[i], &req64->pitches[i]))
++ return -EFAULT;
++ if (__put_user(req32.offsets[i], &req64->offsets[i]))
++ return -EFAULT;
++ if (__put_user(req32.modifier[i], &req64->modifier[i]))
++ return -EFAULT;
++ }
++
++ err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
++ if (err)
++ return err;
++
++ if (__get_user(req32.fb_id, &req64->fb_id))
++ return -EFAULT;
++
++ if (copy_to_user(argp, &req32, sizeof(req32)))
++ return -EFAULT;
++
++ return 0;
++}
++
+ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
+@@ -1048,6 +1107,7 @@ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
+ #endif
+ [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
++ [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
+ };
+
+ /**
+diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
+index 2d0995e7afc3..596bce56e379 100644
+--- a/drivers/gpu/drm/i915/i915_gem.c
++++ b/drivers/gpu/drm/i915/i915_gem.c
+@@ -2401,6 +2401,7 @@ int __i915_add_request(struct intel_engine_cs *ring,
+ }
+
+ request->emitted_jiffies = jiffies;
++ ring->last_submitted_seqno = request->seqno;
+ list_add_tail(&request->list, &ring->request_list);
+ request->file_priv = NULL;
+
+diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
+index 0239fbff7bf7..ad90fa3045e5 100644
+--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
++++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
+@@ -502,17 +502,17 @@ static void gen8_ppgtt_clear_range(struct i915_address_space *vm,
+ struct page *page_table;
+
+ if (WARN_ON(!ppgtt->pdp.page_directory[pdpe]))
+- continue;
++ break;
+
+ pd = ppgtt->pdp.page_directory[pdpe];
+
+ if (WARN_ON(!pd->page_table[pde]))
+- continue;
++ break;
+
+ pt = pd->page_table[pde];
+
+ if (WARN_ON(!pt->page))
+- continue;
++ break;
+
+ page_table = pt->page;
+
+diff --git a/drivers/gpu/drm/i915/i915_ioc32.c b/drivers/gpu/drm/i915/i915_ioc32.c
+index 176de6322e4d..23aa04cded6b 100644
+--- a/drivers/gpu/drm/i915/i915_ioc32.c
++++ b/drivers/gpu/drm/i915/i915_ioc32.c
+@@ -204,7 +204,7 @@ long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+ drm_ioctl_compat_t *fn = NULL;
+ int ret;
+
+- if (nr < DRM_COMMAND_BASE)
++ if (nr < DRM_COMMAND_BASE || nr >= DRM_COMMAND_END)
+ return drm_compat_ioctl(filp, cmd, arg);
+
+ if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(i915_compat_ioctls))
+diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
+index 6d494432b19f..b0df8d10482a 100644
+--- a/drivers/gpu/drm/i915/i915_irq.c
++++ b/drivers/gpu/drm/i915/i915_irq.c
+@@ -2650,18 +2650,11 @@ static void gen8_disable_vblank(struct drm_device *dev, int pipe)
+ spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+ }
+
+-static struct drm_i915_gem_request *
+-ring_last_request(struct intel_engine_cs *ring)
+-{
+- return list_entry(ring->request_list.prev,
+- struct drm_i915_gem_request, list);
+-}
+-
+ static bool
+-ring_idle(struct intel_engine_cs *ring)
++ring_idle(struct intel_engine_cs *ring, u32 seqno)
+ {
+ return (list_empty(&ring->request_list) ||
+- i915_gem_request_completed(ring_last_request(ring), false));
++ i915_seqno_passed(seqno, ring->last_submitted_seqno));
+ }
+
+ static bool
+@@ -2883,7 +2876,7 @@ static void i915_hangcheck_elapsed(struct work_struct *work)
+ acthd = intel_ring_get_active_head(ring);
+
+ if (ring->hangcheck.seqno == seqno) {
+- if (ring_idle(ring)) {
++ if (ring_idle(ring, seqno)) {
+ ring->hangcheck.action = HANGCHECK_IDLE;
+
+ if (waitqueue_active(&ring->irq_queue)) {
+diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
+index 773d1d24e604..a30db4b4050e 100644
+--- a/drivers/gpu/drm/i915/i915_reg.h
++++ b/drivers/gpu/drm/i915/i915_reg.h
+@@ -3209,6 +3209,7 @@ enum skl_disp_power_wells {
+ #define BLM_POLARITY_PNV (1 << 0) /* pnv only */
+
+ #define BLC_HIST_CTL (dev_priv->info.display_mmio_offset + 0x61260)
++#define BLM_HISTOGRAM_ENABLE (1 << 31)
+
+ /* New registers for PCH-split platforms. Safe where new bits show up, the
+ * register layout machtes with gen4 BLC_PWM_CTL[12]. */
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index d0f3cbc87474..57c887843dc3 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -12499,6 +12499,16 @@ intel_check_primary_plane(struct drm_plane *plane,
+ intel_crtc->atomic.wait_vblank = true;
+ }
+
++ /*
++ * FIXME: Actually if we will still have any other plane enabled
++ * on the pipe we could let IPS enabled still, but for
++ * now lets consider that when we make primary invisible
++ * by setting DSPCNTR to 0 on update_primary_plane function
++ * IPS needs to be disable.
++ */
++ if (!state->visible || !fb)
++ intel_crtc->atomic.disable_ips = true;
++
+ intel_crtc->atomic.fb_bits |=
+ INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
+
+@@ -12590,6 +12600,9 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc)
+ if (intel_crtc->atomic.disable_fbc)
+ intel_fbc_disable(dev);
+
++ if (intel_crtc->atomic.disable_ips)
++ hsw_disable_ips(intel_crtc);
++
+ if (intel_crtc->atomic.pre_disable_primary)
+ intel_pre_disable_primary(crtc);
+
+diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
+index 897f17db08af..68d1f74a7403 100644
+--- a/drivers/gpu/drm/i915/intel_drv.h
++++ b/drivers/gpu/drm/i915/intel_drv.h
+@@ -424,6 +424,7 @@ struct intel_crtc_atomic_commit {
+ /* Sleepable operations to perform before commit */
+ bool wait_for_flips;
+ bool disable_fbc;
++ bool disable_ips;
+ bool pre_disable_primary;
+ bool update_wm;
+ unsigned disabled_planes;
+diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
+index 08532d4ffe0a..2bf92cba4a55 100644
+--- a/drivers/gpu/drm/i915/intel_panel.c
++++ b/drivers/gpu/drm/i915/intel_panel.c
+@@ -879,6 +879,14 @@ static void i9xx_enable_backlight(struct intel_connector *connector)
+
+ /* XXX: combine this into above write? */
+ intel_panel_actually_set_backlight(connector, panel->backlight.level);
++
++ /*
++ * Needed to enable backlight on some 855gm models. BLC_HIST_CTL is
++ * 855gm only, but checking for gen2 is safe, as 855gm is the only gen2
++ * that has backlight.
++ */
++ if (IS_GEN2(dev))
++ I915_WRITE(BLC_HIST_CTL, BLM_HISTOGRAM_ENABLE);
+ }
+
+ static void i965_enable_backlight(struct intel_connector *connector)
+diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
+index c761fe05ad6f..94514d364d25 100644
+--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
++++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
+@@ -266,6 +266,13 @@ struct intel_engine_cs {
+ * Do we have some not yet emitted requests outstanding?
+ */
+ struct drm_i915_gem_request *outstanding_lazy_request;
++ /**
++ * Seqno of request most recently submitted to request_list.
++ * Used exclusively by hang checker to avoid grabbing lock while
++ * inspecting request list.
++ */
++ u32 last_submitted_seqno;
++
+ bool gpu_caches_dirty;
+
+ wait_queue_head_t irq_queue;
+diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
+index ff2a74651dd4..a18807ec8371 100644
+--- a/drivers/gpu/drm/i915/intel_uncore.c
++++ b/drivers/gpu/drm/i915/intel_uncore.c
+@@ -1220,10 +1220,12 @@ int i915_reg_read_ioctl(struct drm_device *dev,
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_reg_read *reg = data;
+ struct register_whitelist const *entry = whitelist;
++ unsigned size;
++ u64 offset;
+ int i, ret = 0;
+
+ for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) {
+- if (entry->offset == reg->offset &&
++ if (entry->offset == (reg->offset & -entry->size) &&
+ (1 << INTEL_INFO(dev)->gen & entry->gen_bitmask))
+ break;
+ }
+@@ -1231,23 +1233,33 @@ int i915_reg_read_ioctl(struct drm_device *dev,
+ if (i == ARRAY_SIZE(whitelist))
+ return -EINVAL;
+
++ /* We use the low bits to encode extra flags as the register should
++ * be naturally aligned (and those that are not so aligned merely
++ * limit the available flags for that register).
++ */
++ offset = entry->offset;
++ size = entry->size;
++ size |= reg->offset ^ offset;
++
+ intel_runtime_pm_get(dev_priv);
+
+- switch (entry->size) {
++ switch (size) {
++ case 8 | 1:
++ reg->val = I915_READ64_2x32(offset, offset+4);
++ break;
+ case 8:
+- reg->val = I915_READ64(reg->offset);
++ reg->val = I915_READ64(offset);
+ break;
+ case 4:
+- reg->val = I915_READ(reg->offset);
++ reg->val = I915_READ(offset);
+ break;
+ case 2:
+- reg->val = I915_READ16(reg->offset);
++ reg->val = I915_READ16(offset);
+ break;
+ case 1:
+- reg->val = I915_READ8(reg->offset);
++ reg->val = I915_READ8(offset);
+ break;
+ default:
+- MISSING_CASE(entry->size);
+ ret = -EINVAL;
+ goto out;
+ }
+diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
+index 97823644d347..f33251d67914 100644
+--- a/drivers/gpu/drm/qxl/qxl_cmd.c
++++ b/drivers/gpu/drm/qxl/qxl_cmd.c
+@@ -505,6 +505,7 @@ int qxl_hw_surface_alloc(struct qxl_device *qdev,
+
+ cmd = (struct qxl_surface_cmd *)qxl_release_map(qdev, release);
+ cmd->type = QXL_SURFACE_CMD_CREATE;
++ cmd->flags = QXL_SURF_FLAG_KEEP_DATA;
+ cmd->u.surface_create.format = surf->surf.format;
+ cmd->u.surface_create.width = surf->surf.width;
+ cmd->u.surface_create.height = surf->surf.height;
+diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c
+index b110883f8253..7354a4cda59d 100644
+--- a/drivers/gpu/drm/qxl/qxl_ioctl.c
++++ b/drivers/gpu/drm/qxl/qxl_ioctl.c
+@@ -122,8 +122,10 @@ static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev,
+ qobj = gem_to_qxl_bo(gobj);
+
+ ret = qxl_release_list_add(release, qobj);
+- if (ret)
++ if (ret) {
++ drm_gem_object_unreference_unlocked(gobj);
+ return NULL;
++ }
+
+ return qobj;
+ }
+diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
+index 8730562323a8..4a09947be244 100644
+--- a/drivers/gpu/drm/radeon/ci_dpm.c
++++ b/drivers/gpu/drm/radeon/ci_dpm.c
+@@ -5818,7 +5818,7 @@ int ci_dpm_init(struct radeon_device *rdev)
+ tmp |= DPM_ENABLED;
+ break;
+ default:
+- DRM_ERROR("Invalid PCC GPIO: %u!\n", gpio.shift);
++ DRM_DEBUG("Invalid PCC GPIO: %u!\n", gpio.shift);
+ break;
+ }
+ WREG32_SMC(CNB_PWRMGT_CNTL, tmp);
+diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
+index ba50f3c1c2e0..845665362475 100644
+--- a/drivers/gpu/drm/radeon/cik.c
++++ b/drivers/gpu/drm/radeon/cik.c
+@@ -4579,6 +4579,31 @@ void cik_compute_set_wptr(struct radeon_device *rdev,
+ WDOORBELL32(ring->doorbell_index, ring->wptr);
+ }
+
++static void cik_compute_stop(struct radeon_device *rdev,
++ struct radeon_ring *ring)
++{
++ u32 j, tmp;
++
++ cik_srbm_select(rdev, ring->me, ring->pipe, ring->queue, 0);
++ /* Disable wptr polling. */
++ tmp = RREG32(CP_PQ_WPTR_POLL_CNTL);
++ tmp &= ~WPTR_POLL_EN;
++ WREG32(CP_PQ_WPTR_POLL_CNTL, tmp);
++ /* Disable HQD. */
++ if (RREG32(CP_HQD_ACTIVE) & 1) {
++ WREG32(CP_HQD_DEQUEUE_REQUEST, 1);
++ for (j = 0; j < rdev->usec_timeout; j++) {
++ if (!(RREG32(CP_HQD_ACTIVE) & 1))
++ break;
++ udelay(1);
++ }
++ WREG32(CP_HQD_DEQUEUE_REQUEST, 0);
++ WREG32(CP_HQD_PQ_RPTR, 0);
++ WREG32(CP_HQD_PQ_WPTR, 0);
++ }
++ cik_srbm_select(rdev, 0, 0, 0, 0);
++}
++
+ /**
+ * cik_cp_compute_enable - enable/disable the compute CP MEs
+ *
+@@ -4592,6 +4617,15 @@ static void cik_cp_compute_enable(struct radeon_device *rdev, bool enable)
+ if (enable)
+ WREG32(CP_MEC_CNTL, 0);
+ else {
++ /*
++ * To make hibernation reliable we need to clear compute ring
++ * configuration before halting the compute ring.
++ */
++ mutex_lock(&rdev->srbm_mutex);
++ cik_compute_stop(rdev,&rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX]);
++ cik_compute_stop(rdev,&rdev->ring[CAYMAN_RING_TYPE_CP2_INDEX]);
++ mutex_unlock(&rdev->srbm_mutex);
++
+ WREG32(CP_MEC_CNTL, (MEC_ME1_HALT | MEC_ME2_HALT));
+ rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX].ready = false;
+ rdev->ring[CAYMAN_RING_TYPE_CP2_INDEX].ready = false;
+@@ -7905,23 +7939,27 @@ restart_ih:
+ case 1: /* D1 vblank/vline */
+ switch (src_data) {
+ case 0: /* D1 vblank */
+- if (rdev->irq.stat_regs.cik.disp_int & LB_D1_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[0]) {
+- drm_handle_vblank(rdev->ddev, 0);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[0]))
+- radeon_crtc_handle_vblank(rdev, 0);
+- rdev->irq.stat_regs.cik.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D1 vblank\n");
++ if (!(rdev->irq.stat_regs.cik.disp_int & LB_D1_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[0]) {
++ drm_handle_vblank(rdev->ddev, 0);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[0]))
++ radeon_crtc_handle_vblank(rdev, 0);
++ rdev->irq.stat_regs.cik.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D1 vblank\n");
++
+ break;
+ case 1: /* D1 vline */
+- if (rdev->irq.stat_regs.cik.disp_int & LB_D1_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int &= ~LB_D1_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D1 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int & LB_D1_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int &= ~LB_D1_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D1 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -7931,23 +7969,27 @@ restart_ih:
+ case 2: /* D2 vblank/vline */
+ switch (src_data) {
+ case 0: /* D2 vblank */
+- if (rdev->irq.stat_regs.cik.disp_int_cont & LB_D2_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[1]) {
+- drm_handle_vblank(rdev->ddev, 1);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[1]))
+- radeon_crtc_handle_vblank(rdev, 1);
+- rdev->irq.stat_regs.cik.disp_int_cont &= ~LB_D2_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D2 vblank\n");
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont & LB_D2_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[1]) {
++ drm_handle_vblank(rdev->ddev, 1);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[1]))
++ radeon_crtc_handle_vblank(rdev, 1);
++ rdev->irq.stat_regs.cik.disp_int_cont &= ~LB_D2_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D2 vblank\n");
++
+ break;
+ case 1: /* D2 vline */
+- if (rdev->irq.stat_regs.cik.disp_int_cont & LB_D2_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont &= ~LB_D2_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D2 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont & LB_D2_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont &= ~LB_D2_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D2 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -7957,23 +7999,27 @@ restart_ih:
+ case 3: /* D3 vblank/vline */
+ switch (src_data) {
+ case 0: /* D3 vblank */
+- if (rdev->irq.stat_regs.cik.disp_int_cont2 & LB_D3_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[2]) {
+- drm_handle_vblank(rdev->ddev, 2);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[2]))
+- radeon_crtc_handle_vblank(rdev, 2);
+- rdev->irq.stat_regs.cik.disp_int_cont2 &= ~LB_D3_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D3 vblank\n");
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont2 & LB_D3_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[2]) {
++ drm_handle_vblank(rdev->ddev, 2);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[2]))
++ radeon_crtc_handle_vblank(rdev, 2);
++ rdev->irq.stat_regs.cik.disp_int_cont2 &= ~LB_D3_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D3 vblank\n");
++
+ break;
+ case 1: /* D3 vline */
+- if (rdev->irq.stat_regs.cik.disp_int_cont2 & LB_D3_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont2 &= ~LB_D3_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D3 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont2 & LB_D3_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont2 &= ~LB_D3_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D3 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -7983,23 +8029,27 @@ restart_ih:
+ case 4: /* D4 vblank/vline */
+ switch (src_data) {
+ case 0: /* D4 vblank */
+- if (rdev->irq.stat_regs.cik.disp_int_cont3 & LB_D4_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[3]) {
+- drm_handle_vblank(rdev->ddev, 3);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[3]))
+- radeon_crtc_handle_vblank(rdev, 3);
+- rdev->irq.stat_regs.cik.disp_int_cont3 &= ~LB_D4_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D4 vblank\n");
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont3 & LB_D4_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[3]) {
++ drm_handle_vblank(rdev->ddev, 3);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[3]))
++ radeon_crtc_handle_vblank(rdev, 3);
++ rdev->irq.stat_regs.cik.disp_int_cont3 &= ~LB_D4_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D4 vblank\n");
++
+ break;
+ case 1: /* D4 vline */
+- if (rdev->irq.stat_regs.cik.disp_int_cont3 & LB_D4_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont3 &= ~LB_D4_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D4 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont3 & LB_D4_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont3 &= ~LB_D4_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D4 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -8009,23 +8059,27 @@ restart_ih:
+ case 5: /* D5 vblank/vline */
+ switch (src_data) {
+ case 0: /* D5 vblank */
+- if (rdev->irq.stat_regs.cik.disp_int_cont4 & LB_D5_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[4]) {
+- drm_handle_vblank(rdev->ddev, 4);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[4]))
+- radeon_crtc_handle_vblank(rdev, 4);
+- rdev->irq.stat_regs.cik.disp_int_cont4 &= ~LB_D5_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D5 vblank\n");
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont4 & LB_D5_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[4]) {
++ drm_handle_vblank(rdev->ddev, 4);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[4]))
++ radeon_crtc_handle_vblank(rdev, 4);
++ rdev->irq.stat_regs.cik.disp_int_cont4 &= ~LB_D5_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D5 vblank\n");
++
+ break;
+ case 1: /* D5 vline */
+- if (rdev->irq.stat_regs.cik.disp_int_cont4 & LB_D5_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont4 &= ~LB_D5_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D5 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont4 & LB_D5_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont4 &= ~LB_D5_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D5 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -8035,23 +8089,27 @@ restart_ih:
+ case 6: /* D6 vblank/vline */
+ switch (src_data) {
+ case 0: /* D6 vblank */
+- if (rdev->irq.stat_regs.cik.disp_int_cont5 & LB_D6_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[5]) {
+- drm_handle_vblank(rdev->ddev, 5);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[5]))
+- radeon_crtc_handle_vblank(rdev, 5);
+- rdev->irq.stat_regs.cik.disp_int_cont5 &= ~LB_D6_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D6 vblank\n");
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont5 & LB_D6_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[5]) {
++ drm_handle_vblank(rdev->ddev, 5);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[5]))
++ radeon_crtc_handle_vblank(rdev, 5);
++ rdev->irq.stat_regs.cik.disp_int_cont5 &= ~LB_D6_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D6 vblank\n");
++
+ break;
+ case 1: /* D6 vline */
+- if (rdev->irq.stat_regs.cik.disp_int_cont5 & LB_D6_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont5 &= ~LB_D6_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D6 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont5 & LB_D6_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont5 &= ~LB_D6_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D6 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -8071,88 +8129,112 @@ restart_ih:
+ case 42: /* HPD hotplug */
+ switch (src_data) {
+ case 0:
+- if (rdev->irq.stat_regs.cik.disp_int & DC_HPD1_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int &= ~DC_HPD1_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD1\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int & DC_HPD1_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int &= ~DC_HPD1_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD1\n");
++
+ break;
+ case 1:
+- if (rdev->irq.stat_regs.cik.disp_int_cont & DC_HPD2_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont &= ~DC_HPD2_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD2\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont & DC_HPD2_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont &= ~DC_HPD2_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD2\n");
++
+ break;
+ case 2:
+- if (rdev->irq.stat_regs.cik.disp_int_cont2 & DC_HPD3_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont2 &= ~DC_HPD3_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD3\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont2 & DC_HPD3_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont2 &= ~DC_HPD3_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD3\n");
++
+ break;
+ case 3:
+- if (rdev->irq.stat_regs.cik.disp_int_cont3 & DC_HPD4_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont3 &= ~DC_HPD4_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD4\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont3 & DC_HPD4_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont3 &= ~DC_HPD4_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD4\n");
++
+ break;
+ case 4:
+- if (rdev->irq.stat_regs.cik.disp_int_cont4 & DC_HPD5_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont4 &= ~DC_HPD5_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD5\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont4 & DC_HPD5_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont4 &= ~DC_HPD5_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD5\n");
++
+ break;
+ case 5:
+- if (rdev->irq.stat_regs.cik.disp_int_cont5 & DC_HPD6_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont5 &= ~DC_HPD6_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD6\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont5 & DC_HPD6_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont5 &= ~DC_HPD6_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD6\n");
++
+ break;
+ case 6:
+- if (rdev->irq.stat_regs.cik.disp_int & DC_HPD1_RX_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int &= ~DC_HPD1_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 1\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int & DC_HPD1_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int &= ~DC_HPD1_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 1\n");
++
+ break;
+ case 7:
+- if (rdev->irq.stat_regs.cik.disp_int_cont & DC_HPD2_RX_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont &= ~DC_HPD2_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 2\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont & DC_HPD2_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont &= ~DC_HPD2_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 2\n");
++
+ break;
+ case 8:
+- if (rdev->irq.stat_regs.cik.disp_int_cont2 & DC_HPD3_RX_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont2 &= ~DC_HPD3_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 3\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont2 & DC_HPD3_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont2 &= ~DC_HPD3_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 3\n");
++
+ break;
+ case 9:
+- if (rdev->irq.stat_regs.cik.disp_int_cont3 & DC_HPD4_RX_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont3 &= ~DC_HPD4_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 4\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont3 & DC_HPD4_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont3 &= ~DC_HPD4_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 4\n");
++
+ break;
+ case 10:
+- if (rdev->irq.stat_regs.cik.disp_int_cont4 & DC_HPD5_RX_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont4 &= ~DC_HPD5_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 5\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont4 & DC_HPD5_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont4 &= ~DC_HPD5_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 5\n");
++
+ break;
+ case 11:
+- if (rdev->irq.stat_regs.cik.disp_int_cont5 & DC_HPD6_RX_INTERRUPT) {
+- rdev->irq.stat_regs.cik.disp_int_cont5 &= ~DC_HPD6_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 6\n");
+- }
++ if (!(rdev->irq.stat_regs.cik.disp_int_cont5 & DC_HPD6_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.cik.disp_int_cont5 &= ~DC_HPD6_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 6\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
+index f86eb54e7763..d16f2eebd95e 100644
+--- a/drivers/gpu/drm/radeon/cik_sdma.c
++++ b/drivers/gpu/drm/radeon/cik_sdma.c
+@@ -268,6 +268,17 @@ static void cik_sdma_gfx_stop(struct radeon_device *rdev)
+ }
+ rdev->ring[R600_RING_TYPE_DMA_INDEX].ready = false;
+ rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready = false;
++
++ /* FIXME use something else than big hammer but after few days can not
++ * seem to find good combination so reset SDMA blocks as it seems we
++ * do not shut them down properly. This fix hibernation and does not
++ * affect suspend to ram.
++ */
++ WREG32(SRBM_SOFT_RESET, SOFT_RESET_SDMA | SOFT_RESET_SDMA1);
++ (void)RREG32(SRBM_SOFT_RESET);
++ udelay(50);
++ WREG32(SRBM_SOFT_RESET, 0);
++ (void)RREG32(SRBM_SOFT_RESET);
+ }
+
+ /**
+diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
+index f848acfd3fc8..feef136cdb55 100644
+--- a/drivers/gpu/drm/radeon/evergreen.c
++++ b/drivers/gpu/drm/radeon/evergreen.c
+@@ -4855,7 +4855,7 @@ restart_ih:
+ return IRQ_NONE;
+
+ rptr = rdev->ih.rptr;
+- DRM_DEBUG("r600_irq_process start: rptr %d, wptr %d\n", rptr, wptr);
++ DRM_DEBUG("evergreen_irq_process start: rptr %d, wptr %d\n", rptr, wptr);
+
+ /* Order reading of wptr vs. reading of IH ring data */
+ rmb();
+@@ -4873,23 +4873,27 @@ restart_ih:
+ case 1: /* D1 vblank/vline */
+ switch (src_data) {
+ case 0: /* D1 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[0]) {
+- drm_handle_vblank(rdev->ddev, 0);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[0]))
+- radeon_crtc_handle_vblank(rdev, 0);
+- rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D1 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: D1 vblank - IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[0]) {
++ drm_handle_vblank(rdev->ddev, 0);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[0]))
++ radeon_crtc_handle_vblank(rdev, 0);
++ rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D1 vblank\n");
++
+ break;
+ case 1: /* D1 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D1 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: D1 vline - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D1 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -4899,23 +4903,27 @@ restart_ih:
+ case 2: /* D2 vblank/vline */
+ switch (src_data) {
+ case 0: /* D2 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[1]) {
+- drm_handle_vblank(rdev->ddev, 1);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[1]))
+- radeon_crtc_handle_vblank(rdev, 1);
+- rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D2 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: D2 vblank - IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[1]) {
++ drm_handle_vblank(rdev->ddev, 1);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[1]))
++ radeon_crtc_handle_vblank(rdev, 1);
++ rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D2 vblank\n");
++
+ break;
+ case 1: /* D2 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D2 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: D2 vline - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D2 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -4925,23 +4933,27 @@ restart_ih:
+ case 3: /* D3 vblank/vline */
+ switch (src_data) {
+ case 0: /* D3 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont2 & LB_D3_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[2]) {
+- drm_handle_vblank(rdev->ddev, 2);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[2]))
+- radeon_crtc_handle_vblank(rdev, 2);
+- rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~LB_D3_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D3 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont2 & LB_D3_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: D3 vblank - IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[2]) {
++ drm_handle_vblank(rdev->ddev, 2);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[2]))
++ radeon_crtc_handle_vblank(rdev, 2);
++ rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~LB_D3_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D3 vblank\n");
++
+ break;
+ case 1: /* D3 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont2 & LB_D3_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~LB_D3_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D3 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont2 & LB_D3_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: D3 vline - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~LB_D3_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D3 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -4951,23 +4963,27 @@ restart_ih:
+ case 4: /* D4 vblank/vline */
+ switch (src_data) {
+ case 0: /* D4 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont3 & LB_D4_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[3]) {
+- drm_handle_vblank(rdev->ddev, 3);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[3]))
+- radeon_crtc_handle_vblank(rdev, 3);
+- rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~LB_D4_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D4 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont3 & LB_D4_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: D4 vblank - IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[3]) {
++ drm_handle_vblank(rdev->ddev, 3);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[3]))
++ radeon_crtc_handle_vblank(rdev, 3);
++ rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~LB_D4_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D4 vblank\n");
++
+ break;
+ case 1: /* D4 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont3 & LB_D4_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~LB_D4_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D4 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont3 & LB_D4_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: D4 vline - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~LB_D4_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D4 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -4977,23 +4993,27 @@ restart_ih:
+ case 5: /* D5 vblank/vline */
+ switch (src_data) {
+ case 0: /* D5 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont4 & LB_D5_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[4]) {
+- drm_handle_vblank(rdev->ddev, 4);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[4]))
+- radeon_crtc_handle_vblank(rdev, 4);
+- rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~LB_D5_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D5 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont4 & LB_D5_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: D5 vblank - IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[4]) {
++ drm_handle_vblank(rdev->ddev, 4);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[4]))
++ radeon_crtc_handle_vblank(rdev, 4);
++ rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~LB_D5_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D5 vblank\n");
++
+ break;
+ case 1: /* D5 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont4 & LB_D5_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~LB_D5_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D5 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont4 & LB_D5_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: D5 vline - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~LB_D5_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D5 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -5003,23 +5023,27 @@ restart_ih:
+ case 6: /* D6 vblank/vline */
+ switch (src_data) {
+ case 0: /* D6 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & LB_D6_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[5]) {
+- drm_handle_vblank(rdev->ddev, 5);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[5]))
+- radeon_crtc_handle_vblank(rdev, 5);
+- rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~LB_D6_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D6 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont5 & LB_D6_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: D6 vblank - IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[5]) {
++ drm_handle_vblank(rdev->ddev, 5);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[5]))
++ radeon_crtc_handle_vblank(rdev, 5);
++ rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~LB_D6_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D6 vblank\n");
++
+ break;
+ case 1: /* D6 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & LB_D6_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~LB_D6_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D6 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont5 & LB_D6_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: D6 vline - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~LB_D6_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D6 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -5039,88 +5063,100 @@ restart_ih:
+ case 42: /* HPD hotplug */
+ switch (src_data) {
+ case 0:
+- if (rdev->irq.stat_regs.evergreen.disp_int & DC_HPD1_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int &= ~DC_HPD1_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD1\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int & DC_HPD1_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int &= ~DC_HPD1_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD1\n");
+ break;
+ case 1:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont & DC_HPD2_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont &= ~DC_HPD2_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD2\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont & DC_HPD2_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont &= ~DC_HPD2_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD2\n");
+ break;
+ case 2:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont2 & DC_HPD3_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~DC_HPD3_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD3\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont2 & DC_HPD3_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~DC_HPD3_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD3\n");
+ break;
+ case 3:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont3 & DC_HPD4_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~DC_HPD4_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD4\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont3 & DC_HPD4_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~DC_HPD4_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD4\n");
+ break;
+ case 4:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont4 & DC_HPD5_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~DC_HPD5_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD5\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont4 & DC_HPD5_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~DC_HPD5_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD5\n");
+ break;
+ case 5:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~DC_HPD6_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD6\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~DC_HPD6_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD6\n");
+ break;
+ case 6:
+- if (rdev->irq.stat_regs.evergreen.disp_int & DC_HPD1_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int &= ~DC_HPD1_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 1\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int & DC_HPD1_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int &= ~DC_HPD1_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 1\n");
+ break;
+ case 7:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont & DC_HPD2_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont &= ~DC_HPD2_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 2\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont & DC_HPD2_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont &= ~DC_HPD2_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 2\n");
+ break;
+ case 8:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont2 & DC_HPD3_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~DC_HPD3_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 3\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont2 & DC_HPD3_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~DC_HPD3_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 3\n");
+ break;
+ case 9:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont3 & DC_HPD4_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~DC_HPD4_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 4\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont3 & DC_HPD4_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~DC_HPD4_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 4\n");
+ break;
+ case 10:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont4 & DC_HPD5_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~DC_HPD5_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 5\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont4 & DC_HPD5_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~DC_HPD5_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 5\n");
+ break;
+ case 11:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~DC_HPD6_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 6\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~DC_HPD6_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 6\n");
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -5130,46 +5166,52 @@ restart_ih:
+ case 44: /* hdmi */
+ switch (src_data) {
+ case 0:
+- if (rdev->irq.stat_regs.evergreen.afmt_status1 & AFMT_AZ_FORMAT_WTRIG) {
+- rdev->irq.stat_regs.evergreen.afmt_status1 &= ~AFMT_AZ_FORMAT_WTRIG;
+- queue_hdmi = true;
+- DRM_DEBUG("IH: HDMI0\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.afmt_status1 & AFMT_AZ_FORMAT_WTRIG))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.afmt_status1 &= ~AFMT_AZ_FORMAT_WTRIG;
++ queue_hdmi = true;
++ DRM_DEBUG("IH: HDMI0\n");
+ break;
+ case 1:
+- if (rdev->irq.stat_regs.evergreen.afmt_status2 & AFMT_AZ_FORMAT_WTRIG) {
+- rdev->irq.stat_regs.evergreen.afmt_status2 &= ~AFMT_AZ_FORMAT_WTRIG;
+- queue_hdmi = true;
+- DRM_DEBUG("IH: HDMI1\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.afmt_status2 & AFMT_AZ_FORMAT_WTRIG))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.afmt_status2 &= ~AFMT_AZ_FORMAT_WTRIG;
++ queue_hdmi = true;
++ DRM_DEBUG("IH: HDMI1\n");
+ break;
+ case 2:
+- if (rdev->irq.stat_regs.evergreen.afmt_status3 & AFMT_AZ_FORMAT_WTRIG) {
+- rdev->irq.stat_regs.evergreen.afmt_status3 &= ~AFMT_AZ_FORMAT_WTRIG;
+- queue_hdmi = true;
+- DRM_DEBUG("IH: HDMI2\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.afmt_status3 & AFMT_AZ_FORMAT_WTRIG))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.afmt_status3 &= ~AFMT_AZ_FORMAT_WTRIG;
++ queue_hdmi = true;
++ DRM_DEBUG("IH: HDMI2\n");
+ break;
+ case 3:
+- if (rdev->irq.stat_regs.evergreen.afmt_status4 & AFMT_AZ_FORMAT_WTRIG) {
+- rdev->irq.stat_regs.evergreen.afmt_status4 &= ~AFMT_AZ_FORMAT_WTRIG;
+- queue_hdmi = true;
+- DRM_DEBUG("IH: HDMI3\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.afmt_status4 & AFMT_AZ_FORMAT_WTRIG))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.afmt_status4 &= ~AFMT_AZ_FORMAT_WTRIG;
++ queue_hdmi = true;
++ DRM_DEBUG("IH: HDMI3\n");
+ break;
+ case 4:
+- if (rdev->irq.stat_regs.evergreen.afmt_status5 & AFMT_AZ_FORMAT_WTRIG) {
+- rdev->irq.stat_regs.evergreen.afmt_status5 &= ~AFMT_AZ_FORMAT_WTRIG;
+- queue_hdmi = true;
+- DRM_DEBUG("IH: HDMI4\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.afmt_status5 & AFMT_AZ_FORMAT_WTRIG))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.afmt_status5 &= ~AFMT_AZ_FORMAT_WTRIG;
++ queue_hdmi = true;
++ DRM_DEBUG("IH: HDMI4\n");
+ break;
+ case 5:
+- if (rdev->irq.stat_regs.evergreen.afmt_status6 & AFMT_AZ_FORMAT_WTRIG) {
+- rdev->irq.stat_regs.evergreen.afmt_status6 &= ~AFMT_AZ_FORMAT_WTRIG;
+- queue_hdmi = true;
+- DRM_DEBUG("IH: HDMI5\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.afmt_status6 & AFMT_AZ_FORMAT_WTRIG))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.afmt_status6 &= ~AFMT_AZ_FORMAT_WTRIG;
++ queue_hdmi = true;
++ DRM_DEBUG("IH: HDMI5\n");
+ break;
+ default:
+ DRM_ERROR("Unhandled interrupt: %d %d\n", src_id, src_data);
+diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
+index 8f6d862a1882..21e479fefcab 100644
+--- a/drivers/gpu/drm/radeon/r600.c
++++ b/drivers/gpu/drm/radeon/r600.c
+@@ -4039,23 +4039,27 @@ restart_ih:
+ case 1: /* D1 vblank/vline */
+ switch (src_data) {
+ case 0: /* D1 vblank */
+- if (rdev->irq.stat_regs.r600.disp_int & LB_D1_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[0]) {
+- drm_handle_vblank(rdev->ddev, 0);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[0]))
+- radeon_crtc_handle_vblank(rdev, 0);
+- rdev->irq.stat_regs.r600.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D1 vblank\n");
++ if (!(rdev->irq.stat_regs.r600.disp_int & LB_D1_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: D1 vblank - IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[0]) {
++ drm_handle_vblank(rdev->ddev, 0);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[0]))
++ radeon_crtc_handle_vblank(rdev, 0);
++ rdev->irq.stat_regs.r600.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D1 vblank\n");
++
+ break;
+ case 1: /* D1 vline */
+- if (rdev->irq.stat_regs.r600.disp_int & LB_D1_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.r600.disp_int &= ~LB_D1_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D1 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.disp_int & LB_D1_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: D1 vline - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.disp_int &= ~LB_D1_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D1 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -4065,23 +4069,27 @@ restart_ih:
+ case 5: /* D2 vblank/vline */
+ switch (src_data) {
+ case 0: /* D2 vblank */
+- if (rdev->irq.stat_regs.r600.disp_int & LB_D2_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[1]) {
+- drm_handle_vblank(rdev->ddev, 1);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[1]))
+- radeon_crtc_handle_vblank(rdev, 1);
+- rdev->irq.stat_regs.r600.disp_int &= ~LB_D2_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D2 vblank\n");
++ if (!(rdev->irq.stat_regs.r600.disp_int & LB_D2_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: D2 vblank - IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[1]) {
++ drm_handle_vblank(rdev->ddev, 1);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[1]))
++ radeon_crtc_handle_vblank(rdev, 1);
++ rdev->irq.stat_regs.r600.disp_int &= ~LB_D2_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D2 vblank\n");
++
+ break;
+ case 1: /* D1 vline */
+- if (rdev->irq.stat_regs.r600.disp_int & LB_D2_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.r600.disp_int &= ~LB_D2_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D2 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.disp_int & LB_D2_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: D2 vline - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.disp_int &= ~LB_D2_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D2 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -4101,46 +4109,53 @@ restart_ih:
+ case 19: /* HPD/DAC hotplug */
+ switch (src_data) {
+ case 0:
+- if (rdev->irq.stat_regs.r600.disp_int & DC_HPD1_INTERRUPT) {
+- rdev->irq.stat_regs.r600.disp_int &= ~DC_HPD1_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD1\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.disp_int & DC_HPD1_INTERRUPT))
++ DRM_DEBUG("IH: HPD1 - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.disp_int &= ~DC_HPD1_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD1\n");
+ break;
+ case 1:
+- if (rdev->irq.stat_regs.r600.disp_int & DC_HPD2_INTERRUPT) {
+- rdev->irq.stat_regs.r600.disp_int &= ~DC_HPD2_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD2\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.disp_int & DC_HPD2_INTERRUPT))
++ DRM_DEBUG("IH: HPD2 - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.disp_int &= ~DC_HPD2_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD2\n");
+ break;
+ case 4:
+- if (rdev->irq.stat_regs.r600.disp_int_cont & DC_HPD3_INTERRUPT) {
+- rdev->irq.stat_regs.r600.disp_int_cont &= ~DC_HPD3_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD3\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.disp_int_cont & DC_HPD3_INTERRUPT))
++ DRM_DEBUG("IH: HPD3 - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.disp_int_cont &= ~DC_HPD3_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD3\n");
+ break;
+ case 5:
+- if (rdev->irq.stat_regs.r600.disp_int_cont & DC_HPD4_INTERRUPT) {
+- rdev->irq.stat_regs.r600.disp_int_cont &= ~DC_HPD4_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD4\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.disp_int_cont & DC_HPD4_INTERRUPT))
++ DRM_DEBUG("IH: HPD4 - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.disp_int_cont &= ~DC_HPD4_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD4\n");
+ break;
+ case 10:
+- if (rdev->irq.stat_regs.r600.disp_int_cont2 & DC_HPD5_INTERRUPT) {
+- rdev->irq.stat_regs.r600.disp_int_cont2 &= ~DC_HPD5_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD5\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.disp_int_cont2 & DC_HPD5_INTERRUPT))
++ DRM_DEBUG("IH: HPD5 - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.disp_int_cont2 &= ~DC_HPD5_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD5\n");
+ break;
+ case 12:
+- if (rdev->irq.stat_regs.r600.disp_int_cont2 & DC_HPD6_INTERRUPT) {
+- rdev->irq.stat_regs.r600.disp_int_cont2 &= ~DC_HPD6_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD6\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.disp_int_cont2 & DC_HPD6_INTERRUPT))
++ DRM_DEBUG("IH: HPD6 - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.disp_int_cont2 &= ~DC_HPD6_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD6\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -4150,18 +4165,22 @@ restart_ih:
+ case 21: /* hdmi */
+ switch (src_data) {
+ case 4:
+- if (rdev->irq.stat_regs.r600.hdmi0_status & HDMI0_AZ_FORMAT_WTRIG) {
+- rdev->irq.stat_regs.r600.hdmi0_status &= ~HDMI0_AZ_FORMAT_WTRIG;
+- queue_hdmi = true;
+- DRM_DEBUG("IH: HDMI0\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.hdmi0_status & HDMI0_AZ_FORMAT_WTRIG))
++ DRM_DEBUG("IH: HDMI0 - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.hdmi0_status &= ~HDMI0_AZ_FORMAT_WTRIG;
++ queue_hdmi = true;
++ DRM_DEBUG("IH: HDMI0\n");
++
+ break;
+ case 5:
+- if (rdev->irq.stat_regs.r600.hdmi1_status & HDMI0_AZ_FORMAT_WTRIG) {
+- rdev->irq.stat_regs.r600.hdmi1_status &= ~HDMI0_AZ_FORMAT_WTRIG;
+- queue_hdmi = true;
+- DRM_DEBUG("IH: HDMI1\n");
+- }
++ if (!(rdev->irq.stat_regs.r600.hdmi1_status & HDMI0_AZ_FORMAT_WTRIG))
++ DRM_DEBUG("IH: HDMI1 - IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.r600.hdmi1_status &= ~HDMI0_AZ_FORMAT_WTRIG;
++ queue_hdmi = true;
++ DRM_DEBUG("IH: HDMI1\n");
++
+ break;
+ default:
+ DRM_ERROR("Unhandled interrupt: %d %d\n", src_id, src_data);
+diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c
+index 25191f126f3b..fa719c53449b 100644
+--- a/drivers/gpu/drm/radeon/radeon_audio.c
++++ b/drivers/gpu/drm/radeon/radeon_audio.c
+@@ -242,6 +242,13 @@ static struct radeon_audio_funcs dce6_dp_funcs = {
+ .dpms = evergreen_dp_enable,
+ };
+
++static void radeon_audio_enable(struct radeon_device *rdev,
++ struct r600_audio_pin *pin, u8 enable_mask)
++{
++ if (rdev->audio.funcs->enable)
++ rdev->audio.funcs->enable(rdev, pin, enable_mask);
++}
++
+ static void radeon_audio_interface_init(struct radeon_device *rdev)
+ {
+ if (ASIC_IS_DCE6(rdev)) {
+@@ -307,7 +314,7 @@ int radeon_audio_init(struct radeon_device *rdev)
+
+ /* disable audio. it will be set up later */
+ for (i = 0; i < rdev->audio.num_pins; i++)
+- radeon_audio_enable(rdev, &rdev->audio.pin[i], false);
++ radeon_audio_enable(rdev, &rdev->audio.pin[i], 0);
+
+ return 0;
+ }
+@@ -443,13 +450,6 @@ static void radeon_audio_select_pin(struct drm_encoder *encoder)
+ radeon_encoder->audio->select_pin(encoder);
+ }
+
+-void radeon_audio_enable(struct radeon_device *rdev,
+- struct r600_audio_pin *pin, u8 enable_mask)
+-{
+- if (rdev->audio.funcs->enable)
+- rdev->audio.funcs->enable(rdev, pin, enable_mask);
+-}
+-
+ void radeon_audio_detect(struct drm_connector *connector,
+ enum drm_connector_status status)
+ {
+@@ -469,22 +469,22 @@ void radeon_audio_detect(struct drm_connector *connector,
+ dig = radeon_encoder->enc_priv;
+
+ if (status == connector_status_connected) {
+- struct radeon_connector *radeon_connector;
+- int sink_type;
+-
+ if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) {
+ radeon_encoder->audio = NULL;
+ return;
+ }
+
+- radeon_connector = to_radeon_connector(connector);
+- sink_type = radeon_dp_getsinktype(radeon_connector);
++ if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
++ struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+
+- if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
+- sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
+- radeon_encoder->audio = rdev->audio.dp_funcs;
+- else
++ if (radeon_dp_getsinktype(radeon_connector) ==
++ CONNECTOR_OBJECT_ID_DISPLAYPORT)
++ radeon_encoder->audio = rdev->audio.dp_funcs;
++ else
++ radeon_encoder->audio = rdev->audio.hdmi_funcs;
++ } else {
+ radeon_encoder->audio = rdev->audio.hdmi_funcs;
++ }
+
+ dig->afmt->pin = radeon_audio_get_pin(connector->encoder);
+ radeon_audio_enable(rdev, dig->afmt->pin, 0xf);
+@@ -502,7 +502,7 @@ void radeon_audio_fini(struct radeon_device *rdev)
+ return;
+
+ for (i = 0; i < rdev->audio.num_pins; i++)
+- radeon_audio_enable(rdev, &rdev->audio.pin[i], false);
++ radeon_audio_enable(rdev, &rdev->audio.pin[i], 0);
+
+ rdev->audio.enabled = false;
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_audio.h b/drivers/gpu/drm/radeon/radeon_audio.h
+index c92d059ab204..8438304f7139 100644
+--- a/drivers/gpu/drm/radeon/radeon_audio.h
++++ b/drivers/gpu/drm/radeon/radeon_audio.h
+@@ -74,8 +74,6 @@ u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev,
+ void radeon_audio_endpoint_wreg(struct radeon_device *rdev,
+ u32 offset, u32 reg, u32 v);
+ struct r600_audio_pin *radeon_audio_get_pin(struct drm_encoder *encoder);
+-void radeon_audio_enable(struct radeon_device *rdev,
+- struct r600_audio_pin *pin, u8 enable_mask);
+ void radeon_audio_fini(struct radeon_device *rdev);
+ void radeon_audio_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode);
+diff --git a/drivers/gpu/drm/radeon/radeon_cursor.c b/drivers/gpu/drm/radeon/radeon_cursor.c
+index 45e54060ee97..fa661744a1f5 100644
+--- a/drivers/gpu/drm/radeon/radeon_cursor.c
++++ b/drivers/gpu/drm/radeon/radeon_cursor.c
+@@ -205,8 +205,9 @@ static int radeon_cursor_move_locked(struct drm_crtc *crtc, int x, int y)
+ | (x << 16)
+ | y));
+ /* offset is from DISP(2)_BASE_ADDRESS */
+- WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, (radeon_crtc->legacy_cursor_offset +
+- (yorigin * 256)));
++ WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset,
++ radeon_crtc->cursor_addr - radeon_crtc->legacy_display_base_addr +
++ yorigin * 256);
+ }
+
+ radeon_crtc->cursor_x = x;
+@@ -227,51 +228,32 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc,
+ return ret;
+ }
+
+-static int radeon_set_cursor(struct drm_crtc *crtc, struct drm_gem_object *obj)
++static void radeon_set_cursor(struct drm_crtc *crtc)
+ {
+ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+ struct radeon_device *rdev = crtc->dev->dev_private;
+- struct radeon_bo *robj = gem_to_radeon_bo(obj);
+- uint64_t gpu_addr;
+- int ret;
+-
+- ret = radeon_bo_reserve(robj, false);
+- if (unlikely(ret != 0))
+- goto fail;
+- /* Only 27 bit offset for legacy cursor */
+- ret = radeon_bo_pin_restricted(robj, RADEON_GEM_DOMAIN_VRAM,
+- ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
+- &gpu_addr);
+- radeon_bo_unreserve(robj);
+- if (ret)
+- goto fail;
+
+ if (ASIC_IS_DCE4(rdev)) {
+ WREG32(EVERGREEN_CUR_SURFACE_ADDRESS_HIGH + radeon_crtc->crtc_offset,
+- upper_32_bits(gpu_addr));
++ upper_32_bits(radeon_crtc->cursor_addr));
+ WREG32(EVERGREEN_CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
+- gpu_addr & 0xffffffff);
++ lower_32_bits(radeon_crtc->cursor_addr));
+ } else if (ASIC_IS_AVIVO(rdev)) {
+ if (rdev->family >= CHIP_RV770) {
+ if (radeon_crtc->crtc_id)
+- WREG32(R700_D2CUR_SURFACE_ADDRESS_HIGH, upper_32_bits(gpu_addr));
++ WREG32(R700_D2CUR_SURFACE_ADDRESS_HIGH,
++ upper_32_bits(radeon_crtc->cursor_addr));
+ else
+- WREG32(R700_D1CUR_SURFACE_ADDRESS_HIGH, upper_32_bits(gpu_addr));
++ WREG32(R700_D1CUR_SURFACE_ADDRESS_HIGH,
++ upper_32_bits(radeon_crtc->cursor_addr));
+ }
+ WREG32(AVIVO_D1CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
+- gpu_addr & 0xffffffff);
++ lower_32_bits(radeon_crtc->cursor_addr));
+ } else {
+- radeon_crtc->legacy_cursor_offset = gpu_addr - radeon_crtc->legacy_display_base_addr;
+ /* offset is from DISP(2)_BASE_ADDRESS */
+- WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, radeon_crtc->legacy_cursor_offset);
++ WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset,
++ radeon_crtc->cursor_addr - radeon_crtc->legacy_display_base_addr);
+ }
+-
+- return 0;
+-
+-fail:
+- drm_gem_object_unreference_unlocked(obj);
+-
+- return ret;
+ }
+
+ int radeon_crtc_cursor_set2(struct drm_crtc *crtc,
+@@ -283,7 +265,9 @@ int radeon_crtc_cursor_set2(struct drm_crtc *crtc,
+ int32_t hot_y)
+ {
+ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
++ struct radeon_device *rdev = crtc->dev->dev_private;
+ struct drm_gem_object *obj;
++ struct radeon_bo *robj;
+ int ret;
+
+ if (!handle) {
+@@ -305,6 +289,23 @@ int radeon_crtc_cursor_set2(struct drm_crtc *crtc,
+ return -ENOENT;
+ }
+
++ robj = gem_to_radeon_bo(obj);
++ ret = radeon_bo_reserve(robj, false);
++ if (ret != 0) {
++ drm_gem_object_unreference_unlocked(obj);
++ return ret;
++ }
++ /* Only 27 bit offset for legacy cursor */
++ ret = radeon_bo_pin_restricted(robj, RADEON_GEM_DOMAIN_VRAM,
++ ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
++ &radeon_crtc->cursor_addr);
++ radeon_bo_unreserve(robj);
++ if (ret) {
++ DRM_ERROR("Failed to pin new cursor BO (%d)\n", ret);
++ drm_gem_object_unreference_unlocked(obj);
++ return ret;
++ }
++
+ radeon_crtc->cursor_width = width;
+ radeon_crtc->cursor_height = height;
+
+@@ -323,13 +324,8 @@ int radeon_crtc_cursor_set2(struct drm_crtc *crtc,
+ radeon_crtc->cursor_hot_y = hot_y;
+ }
+
+- ret = radeon_set_cursor(crtc, obj);
+-
+- if (ret)
+- DRM_ERROR("radeon_set_cursor returned %d, not changing cursor\n",
+- ret);
+- else
+- radeon_show_cursor(crtc);
++ radeon_set_cursor(crtc);
++ radeon_show_cursor(crtc);
+
+ radeon_lock_cursor(crtc, false);
+
+@@ -341,8 +337,7 @@ unpin:
+ radeon_bo_unpin(robj);
+ radeon_bo_unreserve(robj);
+ }
+- if (radeon_crtc->cursor_bo != obj)
+- drm_gem_object_unreference_unlocked(radeon_crtc->cursor_bo);
++ drm_gem_object_unreference_unlocked(radeon_crtc->cursor_bo);
+ }
+
+ radeon_crtc->cursor_bo = obj;
+@@ -360,7 +355,6 @@ unpin:
+ void radeon_cursor_reset(struct drm_crtc *crtc)
+ {
+ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+- int ret;
+
+ if (radeon_crtc->cursor_bo) {
+ radeon_lock_cursor(crtc, true);
+@@ -368,12 +362,8 @@ void radeon_cursor_reset(struct drm_crtc *crtc)
+ radeon_cursor_move_locked(crtc, radeon_crtc->cursor_x,
+ radeon_crtc->cursor_y);
+
+- ret = radeon_set_cursor(crtc, radeon_crtc->cursor_bo);
+- if (ret)
+- DRM_ERROR("radeon_set_cursor returned %d, not showing "
+- "cursor\n", ret);
+- else
+- radeon_show_cursor(crtc);
++ radeon_set_cursor(crtc);
++ radeon_show_cursor(crtc);
+
+ radeon_lock_cursor(crtc, false);
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
+index a7fdfa4f0857..604c44d88e7a 100644
+--- a/drivers/gpu/drm/radeon/radeon_device.c
++++ b/drivers/gpu/drm/radeon/radeon_device.c
+@@ -1572,11 +1572,21 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend, bool fbcon)
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+ }
+
+- /* unpin the front buffers */
++ /* unpin the front buffers and cursors */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
++ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+ struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->primary->fb);
+ struct radeon_bo *robj;
+
++ if (radeon_crtc->cursor_bo) {
++ struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
++ r = radeon_bo_reserve(robj, false);
++ if (r == 0) {
++ radeon_bo_unpin(robj);
++ radeon_bo_unreserve(robj);
++ }
++ }
++
+ if (rfb == NULL || rfb->obj == NULL) {
+ continue;
+ }
+@@ -1639,6 +1649,7 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
+ {
+ struct drm_connector *connector;
+ struct radeon_device *rdev = dev->dev_private;
++ struct drm_crtc *crtc;
+ int r;
+
+ if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
+@@ -1678,6 +1689,27 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
+
+ radeon_restore_bios_scratch_regs(rdev);
+
++ /* pin cursors */
++ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
++ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
++
++ if (radeon_crtc->cursor_bo) {
++ struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
++ r = radeon_bo_reserve(robj, false);
++ if (r == 0) {
++ /* Only 27 bit offset for legacy cursor */
++ r = radeon_bo_pin_restricted(robj,
++ RADEON_GEM_DOMAIN_VRAM,
++ ASIC_IS_AVIVO(rdev) ?
++ 0 : 1 << 27,
++ &radeon_crtc->cursor_addr);
++ if (r != 0)
++ DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
++ radeon_bo_unreserve(robj);
++ }
++ }
++ }
++
+ /* init dig PHYs, disp eng pll */
+ if (rdev->is_atom_bios) {
+ radeon_atom_encoder_init(rdev);
+diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
+index aeb676708e60..634793ea8418 100644
+--- a/drivers/gpu/drm/radeon/radeon_fb.c
++++ b/drivers/gpu/drm/radeon/radeon_fb.c
+@@ -257,7 +257,6 @@ static int radeonfb_create(struct drm_fb_helper *helper,
+ }
+
+ info->par = rfbdev;
+- info->skip_vt_switch = true;
+
+ ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
+ if (ret) {
+diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
+index 5450fa95a47e..c4777c8d0312 100644
+--- a/drivers/gpu/drm/radeon/radeon_gart.c
++++ b/drivers/gpu/drm/radeon/radeon_gart.c
+@@ -260,8 +260,10 @@ void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
+ }
+ }
+ }
+- mb();
+- radeon_gart_tlb_flush(rdev);
++ if (rdev->gart.ptr) {
++ mb();
++ radeon_gart_tlb_flush(rdev);
++ }
+ }
+
+ /**
+@@ -306,8 +308,10 @@ int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
+ page_base += RADEON_GPU_PAGE_SIZE;
+ }
+ }
+- mb();
+- radeon_gart_tlb_flush(rdev);
++ if (rdev->gart.ptr) {
++ mb();
++ radeon_gart_tlb_flush(rdev);
++ }
+ return 0;
+ }
+
+diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
+index ac3c1310b953..186d0b792a02 100644
+--- a/drivers/gpu/drm/radeon/radeon_gem.c
++++ b/drivers/gpu/drm/radeon/radeon_gem.c
+@@ -36,6 +36,7 @@ void radeon_gem_object_free(struct drm_gem_object *gobj)
+ if (robj) {
+ if (robj->gem_base.import_attach)
+ drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
++ radeon_mn_unregister(robj);
+ radeon_bo_unref(&robj);
+ }
+ }
+@@ -471,6 +472,7 @@ int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
+ r = ret;
+
+ /* Flush HDP cache via MMIO if necessary */
++ cur_placement = ACCESS_ONCE(robj->tbo.mem.mem_type);
+ if (rdev->asic->mmio_hdp_flush &&
+ radeon_mem_type_to_domain(cur_placement) == RADEON_GEM_DOMAIN_VRAM)
+ robj->rdev->asic->mmio_hdp_flush(rdev);
+diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
+index 7162c935371c..f682e5351252 100644
+--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
++++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
+@@ -79,10 +79,12 @@ static void radeon_hotplug_work_func(struct work_struct *work)
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct drm_connector *connector;
+
++ mutex_lock(&mode_config->mutex);
+ if (mode_config->num_connector) {
+ list_for_each_entry(connector, &mode_config->connector_list, head)
+ radeon_connector_hotplug(connector);
+ }
++ mutex_unlock(&mode_config->mutex);
+ /* Just fire off a uevent and let userspace tell us what to do */
+ drm_helper_hpd_irq_event(dev);
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
+index fa91a17b81b6..f01c797b78cf 100644
+--- a/drivers/gpu/drm/radeon/radeon_mode.h
++++ b/drivers/gpu/drm/radeon/radeon_mode.h
+@@ -343,7 +343,6 @@ struct radeon_crtc {
+ int max_cursor_width;
+ int max_cursor_height;
+ uint32_t legacy_display_base_addr;
+- uint32_t legacy_cursor_offset;
+ enum radeon_rmx_type rmx_type;
+ u8 h_border;
+ u8 v_border;
+diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
+index 318165d4855c..676362769b8d 100644
+--- a/drivers/gpu/drm/radeon/radeon_object.c
++++ b/drivers/gpu/drm/radeon/radeon_object.c
+@@ -75,7 +75,6 @@ static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
+ bo = container_of(tbo, struct radeon_bo, tbo);
+
+ radeon_update_memory_usage(bo, bo->tbo.mem.mem_type, -1);
+- radeon_mn_unregister(bo);
+
+ mutex_lock(&bo->rdev->gem.mutex);
+ list_del_init(&bo->list);
+diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
+index 4c679b802bc8..e15185b16504 100644
+--- a/drivers/gpu/drm/radeon/si.c
++++ b/drivers/gpu/drm/radeon/si.c
+@@ -6466,23 +6466,27 @@ restart_ih:
+ case 1: /* D1 vblank/vline */
+ switch (src_data) {
+ case 0: /* D1 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[0]) {
+- drm_handle_vblank(rdev->ddev, 0);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[0]))
+- radeon_crtc_handle_vblank(rdev, 0);
+- rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D1 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[0]) {
++ drm_handle_vblank(rdev->ddev, 0);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[0]))
++ radeon_crtc_handle_vblank(rdev, 0);
++ rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D1 vblank\n");
++
+ break;
+ case 1: /* D1 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D1 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D1 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -6492,23 +6496,27 @@ restart_ih:
+ case 2: /* D2 vblank/vline */
+ switch (src_data) {
+ case 0: /* D2 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[1]) {
+- drm_handle_vblank(rdev->ddev, 1);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[1]))
+- radeon_crtc_handle_vblank(rdev, 1);
+- rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D2 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[1]) {
++ drm_handle_vblank(rdev->ddev, 1);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[1]))
++ radeon_crtc_handle_vblank(rdev, 1);
++ rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D2 vblank\n");
++
+ break;
+ case 1: /* D2 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D2 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D2 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -6518,23 +6526,27 @@ restart_ih:
+ case 3: /* D3 vblank/vline */
+ switch (src_data) {
+ case 0: /* D3 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont2 & LB_D3_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[2]) {
+- drm_handle_vblank(rdev->ddev, 2);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[2]))
+- radeon_crtc_handle_vblank(rdev, 2);
+- rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~LB_D3_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D3 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont2 & LB_D3_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[2]) {
++ drm_handle_vblank(rdev->ddev, 2);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[2]))
++ radeon_crtc_handle_vblank(rdev, 2);
++ rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~LB_D3_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D3 vblank\n");
++
+ break;
+ case 1: /* D3 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont2 & LB_D3_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~LB_D3_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D3 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont2 & LB_D3_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~LB_D3_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D3 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -6544,23 +6556,27 @@ restart_ih:
+ case 4: /* D4 vblank/vline */
+ switch (src_data) {
+ case 0: /* D4 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont3 & LB_D4_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[3]) {
+- drm_handle_vblank(rdev->ddev, 3);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[3]))
+- radeon_crtc_handle_vblank(rdev, 3);
+- rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~LB_D4_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D4 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont3 & LB_D4_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[3]) {
++ drm_handle_vblank(rdev->ddev, 3);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[3]))
++ radeon_crtc_handle_vblank(rdev, 3);
++ rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~LB_D4_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D4 vblank\n");
++
+ break;
+ case 1: /* D4 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont3 & LB_D4_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~LB_D4_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D4 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont3 & LB_D4_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~LB_D4_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D4 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -6570,23 +6586,27 @@ restart_ih:
+ case 5: /* D5 vblank/vline */
+ switch (src_data) {
+ case 0: /* D5 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont4 & LB_D5_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[4]) {
+- drm_handle_vblank(rdev->ddev, 4);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[4]))
+- radeon_crtc_handle_vblank(rdev, 4);
+- rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~LB_D5_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D5 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont4 & LB_D5_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[4]) {
++ drm_handle_vblank(rdev->ddev, 4);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[4]))
++ radeon_crtc_handle_vblank(rdev, 4);
++ rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~LB_D5_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D5 vblank\n");
++
+ break;
+ case 1: /* D5 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont4 & LB_D5_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~LB_D5_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D5 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont4 & LB_D5_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~LB_D5_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D5 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -6596,23 +6616,27 @@ restart_ih:
+ case 6: /* D6 vblank/vline */
+ switch (src_data) {
+ case 0: /* D6 vblank */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & LB_D6_VBLANK_INTERRUPT) {
+- if (rdev->irq.crtc_vblank_int[5]) {
+- drm_handle_vblank(rdev->ddev, 5);
+- rdev->pm.vblank_sync = true;
+- wake_up(&rdev->irq.vblank_queue);
+- }
+- if (atomic_read(&rdev->irq.pflip[5]))
+- radeon_crtc_handle_vblank(rdev, 5);
+- rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~LB_D6_VBLANK_INTERRUPT;
+- DRM_DEBUG("IH: D6 vblank\n");
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont5 & LB_D6_VBLANK_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ if (rdev->irq.crtc_vblank_int[5]) {
++ drm_handle_vblank(rdev->ddev, 5);
++ rdev->pm.vblank_sync = true;
++ wake_up(&rdev->irq.vblank_queue);
+ }
++ if (atomic_read(&rdev->irq.pflip[5]))
++ radeon_crtc_handle_vblank(rdev, 5);
++ rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~LB_D6_VBLANK_INTERRUPT;
++ DRM_DEBUG("IH: D6 vblank\n");
++
+ break;
+ case 1: /* D6 vline */
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & LB_D6_VLINE_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~LB_D6_VLINE_INTERRUPT;
+- DRM_DEBUG("IH: D6 vline\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont5 & LB_D6_VLINE_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~LB_D6_VLINE_INTERRUPT;
++ DRM_DEBUG("IH: D6 vline\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+@@ -6632,88 +6656,112 @@ restart_ih:
+ case 42: /* HPD hotplug */
+ switch (src_data) {
+ case 0:
+- if (rdev->irq.stat_regs.evergreen.disp_int & DC_HPD1_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int &= ~DC_HPD1_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD1\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int & DC_HPD1_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int &= ~DC_HPD1_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD1\n");
++
+ break;
+ case 1:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont & DC_HPD2_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont &= ~DC_HPD2_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD2\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont & DC_HPD2_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont &= ~DC_HPD2_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD2\n");
++
+ break;
+ case 2:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont2 & DC_HPD3_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~DC_HPD3_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD3\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont2 & DC_HPD3_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~DC_HPD3_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD3\n");
++
+ break;
+ case 3:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont3 & DC_HPD4_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~DC_HPD4_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD4\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont3 & DC_HPD4_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~DC_HPD4_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD4\n");
++
+ break;
+ case 4:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont4 & DC_HPD5_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~DC_HPD5_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD5\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont4 & DC_HPD5_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~DC_HPD5_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD5\n");
++
+ break;
+ case 5:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~DC_HPD6_INTERRUPT;
+- queue_hotplug = true;
+- DRM_DEBUG("IH: HPD6\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~DC_HPD6_INTERRUPT;
++ queue_hotplug = true;
++ DRM_DEBUG("IH: HPD6\n");
++
+ break;
+ case 6:
+- if (rdev->irq.stat_regs.evergreen.disp_int & DC_HPD1_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int &= ~DC_HPD1_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 1\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int & DC_HPD1_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int &= ~DC_HPD1_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 1\n");
++
+ break;
+ case 7:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont & DC_HPD2_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont &= ~DC_HPD2_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 2\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont & DC_HPD2_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont &= ~DC_HPD2_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 2\n");
++
+ break;
+ case 8:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont2 & DC_HPD3_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~DC_HPD3_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 3\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont2 & DC_HPD3_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont2 &= ~DC_HPD3_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 3\n");
++
+ break;
+ case 9:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont3 & DC_HPD4_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~DC_HPD4_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 4\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont3 & DC_HPD4_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont3 &= ~DC_HPD4_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 4\n");
++
+ break;
+ case 10:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont4 & DC_HPD5_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~DC_HPD5_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 5\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont4 & DC_HPD5_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont4 &= ~DC_HPD5_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 5\n");
++
+ break;
+ case 11:
+- if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_RX_INTERRUPT) {
+- rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~DC_HPD6_RX_INTERRUPT;
+- queue_dp = true;
+- DRM_DEBUG("IH: HPD_RX 6\n");
+- }
++ if (!(rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_RX_INTERRUPT))
++ DRM_DEBUG("IH: IH event w/o asserted irq bit?\n");
++
++ rdev->irq.stat_regs.evergreen.disp_int_cont5 &= ~DC_HPD6_RX_INTERRUPT;
++ queue_dp = true;
++ DRM_DEBUG("IH: HPD_RX 6\n");
++
+ break;
+ default:
+ DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data);
+diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
+index ff8b83f5e929..9dfcedec05a6 100644
+--- a/drivers/gpu/drm/radeon/si_dpm.c
++++ b/drivers/gpu/drm/radeon/si_dpm.c
+@@ -2925,6 +2925,7 @@ static struct si_dpm_quirk si_dpm_quirk_list[] = {
+ /* PITCAIRN - https://bugs.freedesktop.org/show_bug.cgi?id=76490 */
+ { PCI_VENDOR_ID_ATI, 0x6810, 0x1462, 0x3036, 0, 120000 },
+ { PCI_VENDOR_ID_ATI, 0x6811, 0x174b, 0xe271, 0, 120000 },
++ { PCI_VENDOR_ID_ATI, 0x6810, 0x174b, 0xe271, 85000, 90000 },
+ { 0, 0, 0, 0 },
+ };
+
+diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+index eb2282cc4a56..eba5f8a52fbd 100644
+--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
++++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+@@ -54,55 +54,56 @@ static void rockchip_gem_free_buf(struct rockchip_gem_object *rk_obj)
+ &rk_obj->dma_attrs);
+ }
+
+-int rockchip_gem_mmap_buf(struct drm_gem_object *obj,
+- struct vm_area_struct *vma)
++static int rockchip_drm_gem_object_mmap(struct drm_gem_object *obj,
++ struct vm_area_struct *vma)
++
+ {
++ int ret;
+ struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
+ struct drm_device *drm = obj->dev;
+- unsigned long vm_size;
+
+- vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+- vm_size = vma->vm_end - vma->vm_start;
+-
+- if (vm_size > obj->size)
+- return -EINVAL;
++ /*
++ * dma_alloc_attrs() allocated a struct page table for rk_obj, so clear
++ * VM_PFNMAP flag that was set by drm_gem_mmap_obj()/drm_gem_mmap().
++ */
++ vma->vm_flags &= ~VM_PFNMAP;
+
+- return dma_mmap_attrs(drm->dev, vma, rk_obj->kvaddr, rk_obj->dma_addr,
++ ret = dma_mmap_attrs(drm->dev, vma, rk_obj->kvaddr, rk_obj->dma_addr,
+ obj->size, &rk_obj->dma_attrs);
++ if (ret)
++ drm_gem_vm_close(vma);
++
++ return ret;
+ }
+
+-/* drm driver mmap file operations */
+-int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma)
++int rockchip_gem_mmap_buf(struct drm_gem_object *obj,
++ struct vm_area_struct *vma)
+ {
+- struct drm_file *priv = filp->private_data;
+- struct drm_device *dev = priv->minor->dev;
+- struct drm_gem_object *obj;
+- struct drm_vma_offset_node *node;
++ struct drm_device *drm = obj->dev;
+ int ret;
+
+- if (drm_device_is_unplugged(dev))
+- return -ENODEV;
++ mutex_lock(&drm->struct_mutex);
++ ret = drm_gem_mmap_obj(obj, obj->size, vma);
++ mutex_unlock(&drm->struct_mutex);
++ if (ret)
++ return ret;
+
+- mutex_lock(&dev->struct_mutex);
++ return rockchip_drm_gem_object_mmap(obj, vma);
++}
+
+- node = drm_vma_offset_exact_lookup(dev->vma_offset_manager,
+- vma->vm_pgoff,
+- vma_pages(vma));
+- if (!node) {
+- mutex_unlock(&dev->struct_mutex);
+- DRM_ERROR("failed to find vma node.\n");
+- return -EINVAL;
+- } else if (!drm_vma_node_is_allowed(node, filp)) {
+- mutex_unlock(&dev->struct_mutex);
+- return -EACCES;
+- }
++/* drm driver mmap file operations */
++int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma)
++{
++ struct drm_gem_object *obj;
++ int ret;
+
+- obj = container_of(node, struct drm_gem_object, vma_node);
+- ret = rockchip_gem_mmap_buf(obj, vma);
++ ret = drm_gem_mmap(filp, vma);
++ if (ret)
++ return ret;
+
+- mutex_unlock(&dev->struct_mutex);
++ obj = vma->vm_private_data;
+
+- return ret;
++ return rockchip_drm_gem_object_mmap(obj, vma);
+ }
+
+ struct rockchip_gem_object *
+diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
+index d6b55e3e3716..a43a836e6f88 100644
+--- a/drivers/gpu/drm/tegra/dpaux.c
++++ b/drivers/gpu/drm/tegra/dpaux.c
+@@ -72,34 +72,32 @@ static inline void tegra_dpaux_writel(struct tegra_dpaux *dpaux,
+ static void tegra_dpaux_write_fifo(struct tegra_dpaux *dpaux, const u8 *buffer,
+ size_t size)
+ {
+- unsigned long offset = DPAUX_DP_AUXDATA_WRITE(0);
+ size_t i, j;
+
+- for (i = 0; i < size; i += 4) {
+- size_t num = min_t(size_t, size - i, 4);
++ for (i = 0; i < DIV_ROUND_UP(size, 4); i++) {
++ size_t num = min_t(size_t, size - i * 4, 4);
+ unsigned long value = 0;
+
+ for (j = 0; j < num; j++)
+- value |= buffer[i + j] << (j * 8);
++ value |= buffer[i * 4 + j] << (j * 8);
+
+- tegra_dpaux_writel(dpaux, value, offset++);
++ tegra_dpaux_writel(dpaux, value, DPAUX_DP_AUXDATA_WRITE(i));
+ }
+ }
+
+ static void tegra_dpaux_read_fifo(struct tegra_dpaux *dpaux, u8 *buffer,
+ size_t size)
+ {
+- unsigned long offset = DPAUX_DP_AUXDATA_READ(0);
+ size_t i, j;
+
+- for (i = 0; i < size; i += 4) {
+- size_t num = min_t(size_t, size - i, 4);
++ for (i = 0; i < DIV_ROUND_UP(size, 4); i++) {
++ size_t num = min_t(size_t, size - i * 4, 4);
+ unsigned long value;
+
+- value = tegra_dpaux_readl(dpaux, offset++);
++ value = tegra_dpaux_readl(dpaux, DPAUX_DP_AUXDATA_READ(i));
+
+ for (j = 0; j < num; j++)
+- buffer[i + j] = value >> (j * 8);
++ buffer[i * 4 + j] = value >> (j * 8);
+ }
+ }
+
+diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
+index 7a207ca547be..6394547cf67a 100644
+--- a/drivers/gpu/drm/vgem/vgem_drv.c
++++ b/drivers/gpu/drm/vgem/vgem_drv.c
+@@ -328,6 +328,8 @@ static int __init vgem_init(void)
+ goto out;
+ }
+
++ drm_dev_set_unique(vgem_device, "vgem");
++
+ ret = drm_dev_register(vgem_device, 0);
+
+ if (ret)
+diff --git a/drivers/hwmon/mcp3021.c b/drivers/hwmon/mcp3021.c
+index d219c06a857b..972444a14cca 100644
+--- a/drivers/hwmon/mcp3021.c
++++ b/drivers/hwmon/mcp3021.c
+@@ -31,14 +31,11 @@
+ /* output format */
+ #define MCP3021_SAR_SHIFT 2
+ #define MCP3021_SAR_MASK 0x3ff
+-
+ #define MCP3021_OUTPUT_RES 10 /* 10-bit resolution */
+-#define MCP3021_OUTPUT_SCALE 4
+
+ #define MCP3221_SAR_SHIFT 0
+ #define MCP3221_SAR_MASK 0xfff
+ #define MCP3221_OUTPUT_RES 12 /* 12-bit resolution */
+-#define MCP3221_OUTPUT_SCALE 1
+
+ enum chips {
+ mcp3021,
+@@ -54,7 +51,6 @@ struct mcp3021_data {
+ u16 sar_shift;
+ u16 sar_mask;
+ u8 output_res;
+- u8 output_scale;
+ };
+
+ static int mcp3021_read16(struct i2c_client *client)
+@@ -84,13 +80,7 @@ static int mcp3021_read16(struct i2c_client *client)
+
+ static inline u16 volts_from_reg(struct mcp3021_data *data, u16 val)
+ {
+- if (val == 0)
+- return 0;
+-
+- val = val * data->output_scale - data->output_scale / 2;
+-
+- return val * DIV_ROUND_CLOSEST(data->vdd,
+- (1 << data->output_res) * data->output_scale);
++ return DIV_ROUND_CLOSEST(data->vdd * val, 1 << data->output_res);
+ }
+
+ static ssize_t show_in_input(struct device *dev, struct device_attribute *attr,
+@@ -132,14 +122,12 @@ static int mcp3021_probe(struct i2c_client *client,
+ data->sar_shift = MCP3021_SAR_SHIFT;
+ data->sar_mask = MCP3021_SAR_MASK;
+ data->output_res = MCP3021_OUTPUT_RES;
+- data->output_scale = MCP3021_OUTPUT_SCALE;
+ break;
+
+ case mcp3221:
+ data->sar_shift = MCP3221_SAR_SHIFT;
+ data->sar_mask = MCP3221_SAR_MASK;
+ data->output_res = MCP3221_OUTPUT_RES;
+- data->output_scale = MCP3221_OUTPUT_SCALE;
+ break;
+ }
+
+diff --git a/drivers/hwmon/nct7802.c b/drivers/hwmon/nct7802.c
+index 55765790907b..28fcb2e246d5 100644
+--- a/drivers/hwmon/nct7802.c
++++ b/drivers/hwmon/nct7802.c
+@@ -547,7 +547,7 @@ static umode_t nct7802_temp_is_visible(struct kobject *kobj,
+ if (index >= 9 && index < 18 &&
+ (reg & 0x0c) != 0x04 && (reg & 0x0c) != 0x08) /* RD2 */
+ return 0;
+- if (index >= 18 && index < 27 && (reg & 0x30) != 0x10) /* RD3 */
++ if (index >= 18 && index < 27 && (reg & 0x30) != 0x20) /* RD3 */
+ return 0;
+ if (index >= 27 && index < 35) /* local */
+ return attr->mode;
+diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
+index ff23d1bdd230..9bd10a9b4b50 100644
+--- a/drivers/i2c/busses/i2c-at91.c
++++ b/drivers/i2c/busses/i2c-at91.c
+@@ -65,6 +65,9 @@
+ #define AT91_TWI_UNRE 0x0080 /* Underrun Error */
+ #define AT91_TWI_NACK 0x0100 /* Not Acknowledged */
+
++#define AT91_TWI_INT_MASK \
++ (AT91_TWI_TXCOMP | AT91_TWI_RXRDY | AT91_TWI_TXRDY | AT91_TWI_NACK)
++
+ #define AT91_TWI_IER 0x0024 /* Interrupt Enable Register */
+ #define AT91_TWI_IDR 0x0028 /* Interrupt Disable Register */
+ #define AT91_TWI_IMR 0x002c /* Interrupt Mask Register */
+@@ -119,13 +122,12 @@ static void at91_twi_write(struct at91_twi_dev *dev, unsigned reg, unsigned val)
+
+ static void at91_disable_twi_interrupts(struct at91_twi_dev *dev)
+ {
+- at91_twi_write(dev, AT91_TWI_IDR,
+- AT91_TWI_TXCOMP | AT91_TWI_RXRDY | AT91_TWI_TXRDY);
++ at91_twi_write(dev, AT91_TWI_IDR, AT91_TWI_INT_MASK);
+ }
+
+ static void at91_twi_irq_save(struct at91_twi_dev *dev)
+ {
+- dev->imr = at91_twi_read(dev, AT91_TWI_IMR) & 0x7;
++ dev->imr = at91_twi_read(dev, AT91_TWI_IMR) & AT91_TWI_INT_MASK;
+ at91_disable_twi_interrupts(dev);
+ }
+
+@@ -215,6 +217,14 @@ static void at91_twi_write_data_dma_callback(void *data)
+ dma_unmap_single(dev->dev, sg_dma_address(&dev->dma.sg),
+ dev->buf_len, DMA_TO_DEVICE);
+
++ /*
++ * When this callback is called, THR/TX FIFO is likely not to be empty
++ * yet. So we have to wait for TXCOMP or NACK bits to be set into the
++ * Status Register to be sure that the STOP bit has been sent and the
++ * transfer is completed. The NACK interrupt has already been enabled,
++ * we just have to enable TXCOMP one.
++ */
++ at91_twi_write(dev, AT91_TWI_IER, AT91_TWI_TXCOMP);
+ at91_twi_write(dev, AT91_TWI_CR, AT91_TWI_STOP);
+ }
+
+@@ -309,7 +319,7 @@ static void at91_twi_read_data_dma_callback(void *data)
+ /* The last two bytes have to be read without using dma */
+ dev->buf += dev->buf_len - 2;
+ dev->buf_len = 2;
+- at91_twi_write(dev, AT91_TWI_IER, AT91_TWI_RXRDY);
++ at91_twi_write(dev, AT91_TWI_IER, AT91_TWI_RXRDY | AT91_TWI_TXCOMP);
+ }
+
+ static void at91_twi_read_data_dma(struct at91_twi_dev *dev)
+@@ -370,7 +380,7 @@ static irqreturn_t atmel_twi_interrupt(int irq, void *dev_id)
+ /* catch error flags */
+ dev->transfer_status |= status;
+
+- if (irqstatus & AT91_TWI_TXCOMP) {
++ if (irqstatus & (AT91_TWI_TXCOMP | AT91_TWI_NACK)) {
+ at91_disable_twi_interrupts(dev);
+ complete(&dev->cmd_complete);
+ }
+@@ -384,6 +394,34 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev)
+ unsigned long time_left;
+ bool has_unre_flag = dev->pdata->has_unre_flag;
+
++ /*
++ * WARNING: the TXCOMP bit in the Status Register is NOT a clear on
++ * read flag but shows the state of the transmission at the time the
++ * Status Register is read. According to the programmer datasheet,
++ * TXCOMP is set when both holding register and internal shifter are
++ * empty and STOP condition has been sent.
++ * Consequently, we should enable NACK interrupt rather than TXCOMP to
++ * detect transmission failure.
++ *
++ * Besides, the TXCOMP bit is already set before the i2c transaction
++ * has been started. For read transactions, this bit is cleared when
++ * writing the START bit into the Control Register. So the
++ * corresponding interrupt can safely be enabled just after.
++ * However for write transactions managed by the CPU, we first write
++ * into THR, so TXCOMP is cleared. Then we can safely enable TXCOMP
++ * interrupt. If TXCOMP interrupt were enabled before writing into THR,
++ * the interrupt handler would be called immediately and the i2c command
++ * would be reported as completed.
++ * Also when a write transaction is managed by the DMA controller,
++ * enabling the TXCOMP interrupt in this function may lead to a race
++ * condition since we don't know whether the TXCOMP interrupt is enabled
++ * before or after the DMA has started to write into THR. So the TXCOMP
++ * interrupt is enabled later by at91_twi_write_data_dma_callback().
++ * Immediately after in that DMA callback, we still need to send the
++ * STOP condition manually writing the corresponding bit into the
++ * Control Register.
++ */
++
+ dev_dbg(dev->dev, "transfer: %s %d bytes.\n",
+ (dev->msg->flags & I2C_M_RD) ? "read" : "write", dev->buf_len);
+
+@@ -414,26 +452,24 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev)
+ * seems to be the best solution.
+ */
+ if (dev->use_dma && (dev->buf_len > AT91_I2C_DMA_THRESHOLD)) {
++ at91_twi_write(dev, AT91_TWI_IER, AT91_TWI_NACK);
+ at91_twi_read_data_dma(dev);
+- /*
+- * It is important to enable TXCOMP irq here because
+- * doing it only when transferring the last two bytes
+- * will mask NACK errors since TXCOMP is set when a
+- * NACK occurs.
+- */
+- at91_twi_write(dev, AT91_TWI_IER,
+- AT91_TWI_TXCOMP);
+- } else
++ } else {
+ at91_twi_write(dev, AT91_TWI_IER,
+- AT91_TWI_TXCOMP | AT91_TWI_RXRDY);
++ AT91_TWI_TXCOMP |
++ AT91_TWI_NACK |
++ AT91_TWI_RXRDY);
++ }
+ } else {
+ if (dev->use_dma && (dev->buf_len > AT91_I2C_DMA_THRESHOLD)) {
++ at91_twi_write(dev, AT91_TWI_IER, AT91_TWI_NACK);
+ at91_twi_write_data_dma(dev);
+- at91_twi_write(dev, AT91_TWI_IER, AT91_TWI_TXCOMP);
+ } else {
+ at91_twi_write_next_byte(dev);
+ at91_twi_write(dev, AT91_TWI_IER,
+- AT91_TWI_TXCOMP | AT91_TWI_TXRDY);
++ AT91_TWI_TXCOMP |
++ AT91_TWI_NACK |
++ AT91_TWI_TXRDY);
+ }
+ }
+
+diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
+index 06cc1ff088f1..2ba7c0fbc615 100644
+--- a/drivers/i2c/i2c-mux.c
++++ b/drivers/i2c/i2c-mux.c
+@@ -51,7 +51,7 @@ static int i2c_mux_master_xfer(struct i2c_adapter *adap,
+
+ ret = priv->select(parent, priv->mux_priv, priv->chan_id);
+ if (ret >= 0)
+- ret = parent->algo->master_xfer(parent, msgs, num);
++ ret = __i2c_transfer(parent, msgs, num);
+ if (priv->deselect)
+ priv->deselect(parent, priv->mux_priv, priv->chan_id);
+
+@@ -144,6 +144,7 @@ struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
+ priv->adap.dev.parent = &parent->dev;
+ priv->adap.retries = parent->retries;
+ priv->adap.timeout = parent->timeout;
++ priv->adap.quirks = parent->quirks;
+
+ /* Sanity check on class */
+ if (i2c_mux_parent_classes(parent) & class)
+diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c
+index cb772775da43..0c8d4d2cbdaf 100644
+--- a/drivers/i2c/muxes/i2c-mux-pca9541.c
++++ b/drivers/i2c/muxes/i2c-mux-pca9541.c
+@@ -104,7 +104,7 @@ static int pca9541_reg_write(struct i2c_client *client, u8 command, u8 val)
+ buf[0] = command;
+ buf[1] = val;
+ msg.buf = buf;
+- ret = adap->algo->master_xfer(adap, &msg, 1);
++ ret = __i2c_transfer(adap, &msg, 1);
+ } else {
+ union i2c_smbus_data data;
+
+@@ -144,7 +144,7 @@ static int pca9541_reg_read(struct i2c_client *client, u8 command)
+ .buf = &val
+ }
+ };
+- ret = adap->algo->master_xfer(adap, msg, 2);
++ ret = __i2c_transfer(adap, msg, 2);
+ if (ret == 2)
+ ret = val;
+ else if (ret >= 0)
+diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c
+index bea0d2de2993..ea4aa9dfcea9 100644
+--- a/drivers/i2c/muxes/i2c-mux-pca954x.c
++++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
+@@ -134,7 +134,7 @@ static int pca954x_reg_write(struct i2c_adapter *adap,
+ msg.len = 1;
+ buf[0] = val;
+ msg.buf = buf;
+- ret = adap->algo->master_xfer(adap, &msg, 1);
++ ret = __i2c_transfer(adap, &msg, 1);
+ } else {
+ union i2c_smbus_data data;
+ ret = adap->algo->smbus_xfer(adap, client->addr,
+diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel.c
+index 73e87739d219..bf827d012a71 100644
+--- a/drivers/iio/accel/bmc150-accel.c
++++ b/drivers/iio/accel/bmc150-accel.c
+@@ -1465,7 +1465,7 @@ static void bmc150_accel_unregister_triggers(struct bmc150_accel_data *data,
+ {
+ int i;
+
+- for (i = from; i >= 0; i++) {
++ for (i = from; i >= 0; i--) {
+ if (data->triggers[i].indio_trig) {
+ iio_trigger_unregister(data->triggers[i].indio_trig);
+ data->triggers[i].indio_trig = NULL;
+diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
+index e36a73e7c3a8..1bcb65b8d4a1 100644
+--- a/drivers/iio/adc/Kconfig
++++ b/drivers/iio/adc/Kconfig
+@@ -146,8 +146,7 @@ config DA9150_GPADC
+
+ config CC10001_ADC
+ tristate "Cosmic Circuits 10001 ADC driver"
+- depends on HAVE_CLK || REGULATOR
+- depends on HAS_IOMEM
++ depends on HAS_IOMEM && HAVE_CLK && REGULATOR
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ help
+diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
+index 8a0eb4a04fb5..7b40925dd4ff 100644
+--- a/drivers/iio/adc/at91_adc.c
++++ b/drivers/iio/adc/at91_adc.c
+@@ -182,7 +182,7 @@ struct at91_adc_caps {
+ u8 ts_pen_detect_sensitivity;
+
+ /* startup time calculate function */
+- u32 (*calc_startup_ticks)(u8 startup_time, u32 adc_clk_khz);
++ u32 (*calc_startup_ticks)(u32 startup_time, u32 adc_clk_khz);
+
+ u8 num_channels;
+ struct at91_adc_reg_desc registers;
+@@ -201,7 +201,7 @@ struct at91_adc_state {
+ u8 num_channels;
+ void __iomem *reg_base;
+ struct at91_adc_reg_desc *registers;
+- u8 startup_time;
++ u32 startup_time;
+ u8 sample_hold_time;
+ bool sleep_mode;
+ struct iio_trigger **trig;
+@@ -779,7 +779,7 @@ ret:
+ return ret;
+ }
+
+-static u32 calc_startup_ticks_9260(u8 startup_time, u32 adc_clk_khz)
++static u32 calc_startup_ticks_9260(u32 startup_time, u32 adc_clk_khz)
+ {
+ /*
+ * Number of ticks needed to cover the startup time of the ADC
+@@ -790,7 +790,7 @@ static u32 calc_startup_ticks_9260(u8 startup_time, u32 adc_clk_khz)
+ return round_up((startup_time * adc_clk_khz / 1000) - 1, 8) / 8;
+ }
+
+-static u32 calc_startup_ticks_9x5(u8 startup_time, u32 adc_clk_khz)
++static u32 calc_startup_ticks_9x5(u32 startup_time, u32 adc_clk_khz)
+ {
+ /*
+ * For sama5d3x and at91sam9x5, the formula changes to:
+diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
+index 8d4e019ea4ca..9c311c1e1ac7 100644
+--- a/drivers/iio/adc/rockchip_saradc.c
++++ b/drivers/iio/adc/rockchip_saradc.c
+@@ -349,3 +349,7 @@ static struct platform_driver rockchip_saradc_driver = {
+ };
+
+ module_platform_driver(rockchip_saradc_driver);
++
++MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
++MODULE_DESCRIPTION("Rockchip SARADC driver");
++MODULE_LICENSE("GPL v2");
+diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
+index 94c5f05b4bc1..4caecbea4c97 100644
+--- a/drivers/iio/adc/twl4030-madc.c
++++ b/drivers/iio/adc/twl4030-madc.c
+@@ -835,7 +835,8 @@ static int twl4030_madc_probe(struct platform_device *pdev)
+ irq = platform_get_irq(pdev, 0);
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ twl4030_madc_threaded_irq_handler,
+- IRQF_TRIGGER_RISING, "twl4030_madc", madc);
++ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
++ "twl4030_madc", madc);
+ if (ret) {
+ dev_err(&pdev->dev, "could not request irq\n");
+ goto err_i2c;
+diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+index 610fc98f88ef..595511022795 100644
+--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
++++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+@@ -36,6 +36,8 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+ s32 poll_value = 0;
+
+ if (state) {
++ if (!atomic_read(&st->user_requested_state))
++ return 0;
+ if (sensor_hub_device_open(st->hsdev))
+ return -EIO;
+
+@@ -52,8 +54,12 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+
+ poll_value = hid_sensor_read_poll_value(st);
+ } else {
+- if (!atomic_dec_and_test(&st->data_ready))
++ int val;
++
++ val = atomic_dec_if_positive(&st->data_ready);
++ if (val < 0)
+ return 0;
++
+ sensor_hub_device_close(st->hsdev);
+ state_val = hid_sensor_get_usage_index(st->hsdev,
+ st->power_state.report_id,
+@@ -92,9 +98,11 @@ EXPORT_SYMBOL(hid_sensor_power_state);
+
+ int hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+ {
++
+ #ifdef CONFIG_PM
+ int ret;
+
++ atomic_set(&st->user_requested_state, state);
+ if (state)
+ ret = pm_runtime_get_sync(&st->pdev->dev);
+ else {
+@@ -109,6 +117,7 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state)
+
+ return 0;
+ #else
++ atomic_set(&st->user_requested_state, state);
+ return _hid_sensor_power_state(st, state);
+ #endif
+ }
+diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c
+index 61bb9d4239ea..e98428df0d44 100644
+--- a/drivers/iio/dac/ad5624r_spi.c
++++ b/drivers/iio/dac/ad5624r_spi.c
+@@ -22,7 +22,7 @@
+ #include "ad5624r.h"
+
+ static int ad5624r_spi_write(struct spi_device *spi,
+- u8 cmd, u8 addr, u16 val, u8 len)
++ u8 cmd, u8 addr, u16 val, u8 shift)
+ {
+ u32 data;
+ u8 msg[3];
+@@ -35,7 +35,7 @@ static int ad5624r_spi_write(struct spi_device *spi,
+ * 14-, 12-bit input code followed by 0, 2, or 4 don't care bits,
+ * for the AD5664R, AD5644R, and AD5624R, respectively.
+ */
+- data = (0 << 22) | (cmd << 19) | (addr << 16) | (val << (16 - len));
++ data = (0 << 22) | (cmd << 19) | (addr << 16) | (val << shift);
+ msg[0] = data >> 16;
+ msg[1] = data >> 8;
+ msg[2] = data;
+diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+index 17d4bb15be4d..65ce86837177 100644
+--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
++++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+@@ -431,6 +431,23 @@ static int inv_mpu6050_write_gyro_scale(struct inv_mpu6050_state *st, int val)
+ return -EINVAL;
+ }
+
++static int inv_write_raw_get_fmt(struct iio_dev *indio_dev,
++ struct iio_chan_spec const *chan, long mask)
++{
++ switch (mask) {
++ case IIO_CHAN_INFO_SCALE:
++ switch (chan->type) {
++ case IIO_ANGL_VEL:
++ return IIO_VAL_INT_PLUS_NANO;
++ default:
++ return IIO_VAL_INT_PLUS_MICRO;
++ }
++ default:
++ return IIO_VAL_INT_PLUS_MICRO;
++ }
++
++ return -EINVAL;
++}
+ static int inv_mpu6050_write_accel_scale(struct inv_mpu6050_state *st, int val)
+ {
+ int result, i;
+@@ -696,6 +713,7 @@ static const struct iio_info mpu_info = {
+ .driver_module = THIS_MODULE,
+ .read_raw = &inv_mpu6050_read_raw,
+ .write_raw = &inv_mpu6050_write_raw,
++ .write_raw_get_fmt = &inv_write_raw_get_fmt,
+ .attrs = &inv_attribute_group,
+ .validate_trigger = inv_mpu6050_validate_trigger,
+ };
+diff --git a/drivers/iio/light/cm3323.c b/drivers/iio/light/cm3323.c
+index 869033e48a1f..a1d4905cc9d2 100644
+--- a/drivers/iio/light/cm3323.c
++++ b/drivers/iio/light/cm3323.c
+@@ -123,7 +123,7 @@ static int cm3323_set_it_bits(struct cm3323_data *data, int val, int val2)
+ for (i = 0; i < ARRAY_SIZE(cm3323_int_time); i++) {
+ if (val == cm3323_int_time[i].val &&
+ val2 == cm3323_int_time[i].val2) {
+- reg_conf = data->reg_conf;
++ reg_conf = data->reg_conf & ~CM3323_CONF_IT_MASK;
+ reg_conf |= i << CM3323_CONF_IT_SHIFT;
+
+ ret = i2c_smbus_write_word_data(data->client,
+diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c
+index 71c2bde275aa..f8b1df018abe 100644
+--- a/drivers/iio/light/tcs3414.c
++++ b/drivers/iio/light/tcs3414.c
+@@ -185,7 +185,7 @@ static int tcs3414_write_raw(struct iio_dev *indio_dev,
+ if (val != 0)
+ return -EINVAL;
+ for (i = 0; i < ARRAY_SIZE(tcs3414_times); i++) {
+- if (val == tcs3414_times[i] * 1000) {
++ if (val2 == tcs3414_times[i] * 1000) {
+ data->timing &= ~TCS3414_INTEG_MASK;
+ data->timing |= i;
+ return i2c_smbus_write_byte_data(
+diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
+index fa40f6d0ca39..bd26a484abcc 100644
+--- a/drivers/iio/proximity/sx9500.c
++++ b/drivers/iio/proximity/sx9500.c
+@@ -206,7 +206,7 @@ static int sx9500_read_proximity(struct sx9500_data *data,
+ if (ret < 0)
+ return ret;
+
+- *val = 32767 - (s16)be16_to_cpu(regval);
++ *val = be16_to_cpu(regval);
+
+ return IIO_VAL_INT;
+ }
+diff --git a/drivers/iio/temperature/tmp006.c b/drivers/iio/temperature/tmp006.c
+index 84a0789c3d96..7a8050996b4e 100644
+--- a/drivers/iio/temperature/tmp006.c
++++ b/drivers/iio/temperature/tmp006.c
+@@ -132,6 +132,9 @@ static int tmp006_write_raw(struct iio_dev *indio_dev,
+ struct tmp006_data *data = iio_priv(indio_dev);
+ int i;
+
++ if (mask != IIO_CHAN_INFO_SAMP_FREQ)
++ return -EINVAL;
++
+ for (i = 0; i < ARRAY_SIZE(tmp006_freqs); i++)
+ if ((val == tmp006_freqs[i][0]) &&
+ (val2 == tmp006_freqs[i][1])) {
+diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+index 9dcb66077d6c..219f2122f9b9 100644
+--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
++++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+@@ -679,7 +679,6 @@ err:
+ ocrdma_release_ucontext_pd(uctx);
+ } else {
+ status = _ocrdma_dealloc_pd(dev, pd);
+- kfree(pd);
+ }
+ exit:
+ return ERR_PTR(status);
+diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
+index 135a0907e9de..c90118e90708 100644
+--- a/drivers/md/bitmap.c
++++ b/drivers/md/bitmap.c
+@@ -494,7 +494,7 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap)
+ bitmap_super_t *sb;
+ unsigned long chunksize, daemon_sleep, write_behind;
+
+- bitmap->storage.sb_page = alloc_page(GFP_KERNEL);
++ bitmap->storage.sb_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+ if (bitmap->storage.sb_page == NULL)
+ return -ENOMEM;
+ bitmap->storage.sb_page->index = 0;
+@@ -541,6 +541,7 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap)
+ sb->state = cpu_to_le32(bitmap->flags);
+ bitmap->events_cleared = bitmap->mddev->events;
+ sb->events_cleared = cpu_to_le64(bitmap->mddev->events);
++ bitmap->mddev->bitmap_info.nodes = 0;
+
+ kunmap_atomic(sb);
+
+@@ -611,8 +612,16 @@ re_read:
+ daemon_sleep = le32_to_cpu(sb->daemon_sleep) * HZ;
+ write_behind = le32_to_cpu(sb->write_behind);
+ sectors_reserved = le32_to_cpu(sb->sectors_reserved);
+- nodes = le32_to_cpu(sb->nodes);
+- strlcpy(bitmap->mddev->bitmap_info.cluster_name, sb->cluster_name, 64);
++ /* XXX: This is a hack to ensure that we don't use clustering
++ * in case:
++ * - dm-raid is in use and
++ * - the nodes written in bitmap_sb is erroneous.
++ */
++ if (!bitmap->mddev->sync_super) {
++ nodes = le32_to_cpu(sb->nodes);
++ strlcpy(bitmap->mddev->bitmap_info.cluster_name,
++ sb->cluster_name, 64);
++ }
+
+ /* verify that the bitmap-specific fields are valid */
+ if (sb->magic != cpu_to_le32(BITMAP_MAGIC))
+diff --git a/drivers/md/dm-cache-policy-cleaner.c b/drivers/md/dm-cache-policy-cleaner.c
+index b04d1f904d07..004e463c9423 100644
+--- a/drivers/md/dm-cache-policy-cleaner.c
++++ b/drivers/md/dm-cache-policy-cleaner.c
+@@ -171,7 +171,8 @@ static void remove_cache_hash_entry(struct wb_cache_entry *e)
+ /* Public interface (see dm-cache-policy.h */
+ static int wb_map(struct dm_cache_policy *pe, dm_oblock_t oblock,
+ bool can_block, bool can_migrate, bool discarded_oblock,
+- struct bio *bio, struct policy_result *result)
++ struct bio *bio, struct policy_locker *locker,
++ struct policy_result *result)
+ {
+ struct policy *p = to_policy(pe);
+ struct wb_cache_entry *e;
+diff --git a/drivers/md/dm-cache-policy-internal.h b/drivers/md/dm-cache-policy-internal.h
+index 2256a1f24f73..c198e6defb9c 100644
+--- a/drivers/md/dm-cache-policy-internal.h
++++ b/drivers/md/dm-cache-policy-internal.h
+@@ -16,9 +16,10 @@
+ */
+ static inline int policy_map(struct dm_cache_policy *p, dm_oblock_t oblock,
+ bool can_block, bool can_migrate, bool discarded_oblock,
+- struct bio *bio, struct policy_result *result)
++ struct bio *bio, struct policy_locker *locker,
++ struct policy_result *result)
+ {
+- return p->map(p, oblock, can_block, can_migrate, discarded_oblock, bio, result);
++ return p->map(p, oblock, can_block, can_migrate, discarded_oblock, bio, locker, result);
+ }
+
+ static inline int policy_lookup(struct dm_cache_policy *p, dm_oblock_t oblock, dm_cblock_t *cblock)
+diff --git a/drivers/md/dm-cache-policy-mq.c b/drivers/md/dm-cache-policy-mq.c
+index 3ddd1162334d..515d44bf24d3 100644
+--- a/drivers/md/dm-cache-policy-mq.c
++++ b/drivers/md/dm-cache-policy-mq.c
+@@ -693,9 +693,10 @@ static void requeue(struct mq_policy *mq, struct entry *e)
+ * - set the hit count to a hard coded value other than 1, eg, is it better
+ * if it goes in at level 2?
+ */
+-static int demote_cblock(struct mq_policy *mq, dm_oblock_t *oblock)
++static int demote_cblock(struct mq_policy *mq,
++ struct policy_locker *locker, dm_oblock_t *oblock)
+ {
+- struct entry *demoted = pop(mq, &mq->cache_clean);
++ struct entry *demoted = peek(&mq->cache_clean);
+
+ if (!demoted)
+ /*
+@@ -707,6 +708,13 @@ static int demote_cblock(struct mq_policy *mq, dm_oblock_t *oblock)
+ */
+ return -ENOSPC;
+
++ if (locker->fn(locker, demoted->oblock))
++ /*
++ * We couldn't lock the demoted block.
++ */
++ return -EBUSY;
++
++ del(mq, demoted);
+ *oblock = demoted->oblock;
+ free_entry(&mq->cache_pool, demoted);
+
+@@ -795,6 +803,7 @@ static int cache_entry_found(struct mq_policy *mq,
+ * finding which cache block to use.
+ */
+ static int pre_cache_to_cache(struct mq_policy *mq, struct entry *e,
++ struct policy_locker *locker,
+ struct policy_result *result)
+ {
+ int r;
+@@ -803,11 +812,12 @@ static int pre_cache_to_cache(struct mq_policy *mq, struct entry *e,
+ /* Ensure there's a free cblock in the cache */
+ if (epool_empty(&mq->cache_pool)) {
+ result->op = POLICY_REPLACE;
+- r = demote_cblock(mq, &result->old_oblock);
++ r = demote_cblock(mq, locker, &result->old_oblock);
+ if (r) {
+ result->op = POLICY_MISS;
+ return 0;
+ }
++
+ } else
+ result->op = POLICY_NEW;
+
+@@ -829,7 +839,8 @@ static int pre_cache_to_cache(struct mq_policy *mq, struct entry *e,
+
+ static int pre_cache_entry_found(struct mq_policy *mq, struct entry *e,
+ bool can_migrate, bool discarded_oblock,
+- int data_dir, struct policy_result *result)
++ int data_dir, struct policy_locker *locker,
++ struct policy_result *result)
+ {
+ int r = 0;
+
+@@ -842,7 +853,7 @@ static int pre_cache_entry_found(struct mq_policy *mq, struct entry *e,
+
+ else {
+ requeue(mq, e);
+- r = pre_cache_to_cache(mq, e, result);
++ r = pre_cache_to_cache(mq, e, locker, result);
+ }
+
+ return r;
+@@ -872,6 +883,7 @@ static void insert_in_pre_cache(struct mq_policy *mq,
+ }
+
+ static void insert_in_cache(struct mq_policy *mq, dm_oblock_t oblock,
++ struct policy_locker *locker,
+ struct policy_result *result)
+ {
+ int r;
+@@ -879,7 +891,7 @@ static void insert_in_cache(struct mq_policy *mq, dm_oblock_t oblock,
+
+ if (epool_empty(&mq->cache_pool)) {
+ result->op = POLICY_REPLACE;
+- r = demote_cblock(mq, &result->old_oblock);
++ r = demote_cblock(mq, locker, &result->old_oblock);
+ if (unlikely(r)) {
+ result->op = POLICY_MISS;
+ insert_in_pre_cache(mq, oblock);
+@@ -907,11 +919,12 @@ static void insert_in_cache(struct mq_policy *mq, dm_oblock_t oblock,
+
+ static int no_entry_found(struct mq_policy *mq, dm_oblock_t oblock,
+ bool can_migrate, bool discarded_oblock,
+- int data_dir, struct policy_result *result)
++ int data_dir, struct policy_locker *locker,
++ struct policy_result *result)
+ {
+ if (adjusted_promote_threshold(mq, discarded_oblock, data_dir) <= 1) {
+ if (can_migrate)
+- insert_in_cache(mq, oblock, result);
++ insert_in_cache(mq, oblock, locker, result);
+ else
+ return -EWOULDBLOCK;
+ } else {
+@@ -928,7 +941,8 @@ static int no_entry_found(struct mq_policy *mq, dm_oblock_t oblock,
+ */
+ static int map(struct mq_policy *mq, dm_oblock_t oblock,
+ bool can_migrate, bool discarded_oblock,
+- int data_dir, struct policy_result *result)
++ int data_dir, struct policy_locker *locker,
++ struct policy_result *result)
+ {
+ int r = 0;
+ struct entry *e = hash_lookup(mq, oblock);
+@@ -942,11 +956,11 @@ static int map(struct mq_policy *mq, dm_oblock_t oblock,
+
+ else if (e)
+ r = pre_cache_entry_found(mq, e, can_migrate, discarded_oblock,
+- data_dir, result);
++ data_dir, locker, result);
+
+ else
+ r = no_entry_found(mq, oblock, can_migrate, discarded_oblock,
+- data_dir, result);
++ data_dir, locker, result);
+
+ if (r == -EWOULDBLOCK)
+ result->op = POLICY_MISS;
+@@ -1012,7 +1026,8 @@ static void copy_tick(struct mq_policy *mq)
+
+ static int mq_map(struct dm_cache_policy *p, dm_oblock_t oblock,
+ bool can_block, bool can_migrate, bool discarded_oblock,
+- struct bio *bio, struct policy_result *result)
++ struct bio *bio, struct policy_locker *locker,
++ struct policy_result *result)
+ {
+ int r;
+ struct mq_policy *mq = to_mq_policy(p);
+@@ -1028,7 +1043,7 @@ static int mq_map(struct dm_cache_policy *p, dm_oblock_t oblock,
+
+ iot_examine_bio(&mq->tracker, bio);
+ r = map(mq, oblock, can_migrate, discarded_oblock,
+- bio_data_dir(bio), result);
++ bio_data_dir(bio), locker, result);
+
+ mutex_unlock(&mq->lock);
+
+diff --git a/drivers/md/dm-cache-policy.h b/drivers/md/dm-cache-policy.h
+index f50fe360c546..5524e21e4836 100644
+--- a/drivers/md/dm-cache-policy.h
++++ b/drivers/md/dm-cache-policy.h
+@@ -70,6 +70,18 @@ enum policy_operation {
+ };
+
+ /*
++ * When issuing a POLICY_REPLACE the policy needs to make a callback to
++ * lock the block being demoted. This doesn't need to occur during a
++ * writeback operation since the block remains in the cache.
++ */
++struct policy_locker;
++typedef int (*policy_lock_fn)(struct policy_locker *l, dm_oblock_t oblock);
++
++struct policy_locker {
++ policy_lock_fn fn;
++};
++
++/*
+ * This is the instruction passed back to the core target.
+ */
+ struct policy_result {
+@@ -122,7 +134,8 @@ struct dm_cache_policy {
+ */
+ int (*map)(struct dm_cache_policy *p, dm_oblock_t oblock,
+ bool can_block, bool can_migrate, bool discarded_oblock,
+- struct bio *bio, struct policy_result *result);
++ struct bio *bio, struct policy_locker *locker,
++ struct policy_result *result);
+
+ /*
+ * Sometimes we want to see if a block is in the cache, without
+diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
+index 7755af351867..e049becaaf2d 100644
+--- a/drivers/md/dm-cache-target.c
++++ b/drivers/md/dm-cache-target.c
+@@ -1445,16 +1445,43 @@ static void inc_miss_counter(struct cache *cache, struct bio *bio)
+ &cache->stats.read_miss : &cache->stats.write_miss);
+ }
+
++/*----------------------------------------------------------------*/
++
++struct old_oblock_lock {
++ struct policy_locker locker;
++ struct cache *cache;
++ struct prealloc *structs;
++ struct dm_bio_prison_cell *cell;
++};
++
++static int null_locker(struct policy_locker *locker, dm_oblock_t b)
++{
++ /* This should never be called */
++ BUG();
++ return 0;
++}
++
++static int cell_locker(struct policy_locker *locker, dm_oblock_t b)
++{
++ struct old_oblock_lock *l = container_of(locker, struct old_oblock_lock, locker);
++ struct dm_bio_prison_cell *cell_prealloc = prealloc_get_cell(l->structs);
++
++ return bio_detain(l->cache, b, NULL, cell_prealloc,
++ (cell_free_fn) prealloc_put_cell,
++ l->structs, &l->cell);
++}
++
+ static void process_bio(struct cache *cache, struct prealloc *structs,
+ struct bio *bio)
+ {
+ int r;
+ bool release_cell = true;
+ dm_oblock_t block = get_bio_block(cache, bio);
+- struct dm_bio_prison_cell *cell_prealloc, *old_ocell, *new_ocell;
++ struct dm_bio_prison_cell *cell_prealloc, *new_ocell;
+ struct policy_result lookup_result;
+ bool passthrough = passthrough_mode(&cache->features);
+ bool discarded_block, can_migrate;
++ struct old_oblock_lock ool;
+
+ /*
+ * Check to see if that block is currently migrating.
+@@ -1469,8 +1496,12 @@ static void process_bio(struct cache *cache, struct prealloc *structs,
+ discarded_block = is_discarded_oblock(cache, block);
+ can_migrate = !passthrough && (discarded_block || spare_migration_bandwidth(cache));
+
++ ool.locker.fn = cell_locker;
++ ool.cache = cache;
++ ool.structs = structs;
++ ool.cell = NULL;
+ r = policy_map(cache->policy, block, true, can_migrate, discarded_block,
+- bio, &lookup_result);
++ bio, &ool.locker, &lookup_result);
+
+ if (r == -EWOULDBLOCK)
+ /* migration has been denied */
+@@ -1527,27 +1558,11 @@ static void process_bio(struct cache *cache, struct prealloc *structs,
+ break;
+
+ case POLICY_REPLACE:
+- cell_prealloc = prealloc_get_cell(structs);
+- r = bio_detain(cache, lookup_result.old_oblock, bio, cell_prealloc,
+- (cell_free_fn) prealloc_put_cell,
+- structs, &old_ocell);
+- if (r > 0) {
+- /*
+- * We have to be careful to avoid lock inversion of
+- * the cells. So we back off, and wait for the
+- * old_ocell to become free.
+- */
+- policy_force_mapping(cache->policy, block,
+- lookup_result.old_oblock);
+- atomic_inc(&cache->stats.cache_cell_clash);
+- break;
+- }
+ atomic_inc(&cache->stats.demotion);
+ atomic_inc(&cache->stats.promotion);
+-
+ demote_then_promote(cache, structs, lookup_result.old_oblock,
+ block, lookup_result.cblock,
+- old_ocell, new_ocell);
++ ool.cell, new_ocell);
+ release_cell = false;
+ break;
+
+@@ -2595,6 +2610,9 @@ static int __cache_map(struct cache *cache, struct bio *bio, struct dm_bio_priso
+ bool discarded_block;
+ struct policy_result lookup_result;
+ struct per_bio_data *pb = init_per_bio_data(bio, pb_data_size);
++ struct old_oblock_lock ool;
++
++ ool.locker.fn = null_locker;
+
+ if (unlikely(from_oblock(block) >= from_oblock(cache->origin_blocks))) {
+ /*
+@@ -2633,7 +2651,7 @@ static int __cache_map(struct cache *cache, struct bio *bio, struct dm_bio_priso
+ discarded_block = is_discarded_oblock(cache, block);
+
+ r = policy_map(cache->policy, block, false, can_migrate, discarded_block,
+- bio, &lookup_result);
++ bio, &ool.locker, &lookup_result);
+ if (r == -EWOULDBLOCK) {
+ cell_defer(cache, *cell, true);
+ return DM_MAPIO_SUBMITTED;
+diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c
+index f478a4c96d2f..419bdd4fc8b8 100644
+--- a/drivers/md/dm-stats.c
++++ b/drivers/md/dm-stats.c
+@@ -795,6 +795,8 @@ static int message_stats_create(struct mapped_device *md,
+ return -EINVAL;
+
+ if (sscanf(argv[2], "/%u%c", &divisor, &dummy) == 1) {
++ if (!divisor)
++ return -EINVAL;
+ step = end - start;
+ if (do_div(step, divisor))
+ step++;
+diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
+index 921aafd12aee..e22e6c892b8a 100644
+--- a/drivers/md/dm-thin.c
++++ b/drivers/md/dm-thin.c
+@@ -18,6 +18,7 @@
+ #include <linux/init.h>
+ #include <linux/module.h>
+ #include <linux/slab.h>
++#include <linux/vmalloc.h>
+ #include <linux/sort.h>
+ #include <linux/rbtree.h>
+
+@@ -260,7 +261,7 @@ struct pool {
+ process_mapping_fn process_prepared_mapping;
+ process_mapping_fn process_prepared_discard;
+
+- struct dm_bio_prison_cell *cell_sort_array[CELL_SORT_ARRAY_SIZE];
++ struct dm_bio_prison_cell **cell_sort_array;
+ };
+
+ static enum pool_mode get_pool_mode(struct pool *pool);
+@@ -2499,6 +2500,7 @@ static void __pool_destroy(struct pool *pool)
+ {
+ __pool_table_remove(pool);
+
++ vfree(pool->cell_sort_array);
+ if (dm_pool_metadata_close(pool->pmd) < 0)
+ DMWARN("%s: dm_pool_metadata_close() failed.", __func__);
+
+@@ -2611,6 +2613,13 @@ static struct pool *pool_create(struct mapped_device *pool_md,
+ goto bad_mapping_pool;
+ }
+
++ pool->cell_sort_array = vmalloc(sizeof(*pool->cell_sort_array) * CELL_SORT_ARRAY_SIZE);
++ if (!pool->cell_sort_array) {
++ *error = "Error allocating cell sort array";
++ err_p = ERR_PTR(-ENOMEM);
++ goto bad_sort_array;
++ }
++
+ pool->ref_count = 1;
+ pool->last_commit_jiffies = jiffies;
+ pool->pool_md = pool_md;
+@@ -2619,6 +2628,8 @@ static struct pool *pool_create(struct mapped_device *pool_md,
+
+ return pool;
+
++bad_sort_array:
++ mempool_destroy(pool->mapping_pool);
+ bad_mapping_pool:
+ dm_deferred_set_destroy(pool->all_io_ds);
+ bad_all_io_ds:
+diff --git a/drivers/md/md.c b/drivers/md/md.c
+index 4dbed4a67aaf..b9200282fd77 100644
+--- a/drivers/md/md.c
++++ b/drivers/md/md.c
+@@ -4005,8 +4005,10 @@ new_dev_store(struct mddev *mddev, const char *buf, size_t len)
+ else
+ rdev = md_import_device(dev, -1, -1);
+
+- if (IS_ERR(rdev))
++ if (IS_ERR(rdev)) {
++ mddev_unlock(mddev);
+ return PTR_ERR(rdev);
++ }
+ err = bind_rdev_to_array(rdev, mddev);
+ out:
+ if (err)
+@@ -5159,6 +5161,7 @@ int md_run(struct mddev *mddev)
+ mddev_detach(mddev);
+ if (mddev->private)
+ pers->free(mddev, mddev->private);
++ mddev->private = NULL;
+ module_put(pers->owner);
+ bitmap_destroy(mddev);
+ return err;
+@@ -5294,6 +5297,7 @@ static void md_clean(struct mddev *mddev)
+ mddev->changed = 0;
+ mddev->degraded = 0;
+ mddev->safemode = 0;
++ mddev->private = NULL;
+ mddev->merge_check_needed = 0;
+ mddev->bitmap_info.offset = 0;
+ mddev->bitmap_info.default_offset = 0;
+@@ -5366,6 +5370,7 @@ static void __md_stop(struct mddev *mddev)
+ mddev->pers = NULL;
+ spin_unlock(&mddev->lock);
+ pers->free(mddev, mddev->private);
++ mddev->private = NULL;
+ if (pers->sync_request && mddev->to_remove == NULL)
+ mddev->to_remove = &md_redundancy_group;
+ module_put(pers->owner);
+@@ -6375,7 +6380,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
+ mddev->ctime != info->ctime ||
+ mddev->level != info->level ||
+ /* mddev->layout != info->layout || */
+- !mddev->persistent != info->not_persistent||
++ mddev->persistent != !info->not_persistent ||
+ mddev->chunk_sectors != info->chunk_size >> 9 ||
+ /* ignore bottom 8 bits of state, and allow SB_BITMAP_PRESENT to change */
+ ((state^info->state) & 0xfffffe00)
+diff --git a/drivers/md/persistent-data/dm-btree-remove.c b/drivers/md/persistent-data/dm-btree-remove.c
+index b88757cd0d1d..a03178e91a79 100644
+--- a/drivers/md/persistent-data/dm-btree-remove.c
++++ b/drivers/md/persistent-data/dm-btree-remove.c
+@@ -309,8 +309,8 @@ static void redistribute3(struct dm_btree_info *info, struct btree_node *parent,
+
+ if (s < 0 && nr_center < -s) {
+ /* not enough in central node */
+- shift(left, center, nr_center);
+- s = nr_center - target;
++ shift(left, center, -nr_center);
++ s += nr_center;
+ shift(left, right, s);
+ nr_right += s;
+ } else
+@@ -323,7 +323,7 @@ static void redistribute3(struct dm_btree_info *info, struct btree_node *parent,
+ if (s > 0 && nr_center < s) {
+ /* not enough in central node */
+ shift(center, right, nr_center);
+- s = target - nr_center;
++ s -= nr_center;
+ shift(left, right, s);
+ nr_left -= s;
+ } else
+diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c
+index 200ac12a1d40..fdd3793e22f9 100644
+--- a/drivers/md/persistent-data/dm-btree.c
++++ b/drivers/md/persistent-data/dm-btree.c
+@@ -255,7 +255,7 @@ int dm_btree_del(struct dm_btree_info *info, dm_block_t root)
+ int r;
+ struct del_stack *s;
+
+- s = kmalloc(sizeof(*s), GFP_KERNEL);
++ s = kmalloc(sizeof(*s), GFP_NOIO);
+ if (!s)
+ return -ENOMEM;
+ s->info = info;
+diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c
+index e8a904298887..53091295fce9 100644
+--- a/drivers/md/persistent-data/dm-space-map-metadata.c
++++ b/drivers/md/persistent-data/dm-space-map-metadata.c
+@@ -204,6 +204,27 @@ static void in(struct sm_metadata *smm)
+ smm->recursion_count++;
+ }
+
++static int apply_bops(struct sm_metadata *smm)
++{
++ int r = 0;
++
++ while (!brb_empty(&smm->uncommitted)) {
++ struct block_op bop;
++
++ r = brb_pop(&smm->uncommitted, &bop);
++ if (r) {
++ DMERR("bug in bop ring buffer");
++ break;
++ }
++
++ r = commit_bop(smm, &bop);
++ if (r)
++ break;
++ }
++
++ return r;
++}
++
+ static int out(struct sm_metadata *smm)
+ {
+ int r = 0;
+@@ -216,21 +237,8 @@ static int out(struct sm_metadata *smm)
+ return -ENOMEM;
+ }
+
+- if (smm->recursion_count == 1) {
+- while (!brb_empty(&smm->uncommitted)) {
+- struct block_op bop;
+-
+- r = brb_pop(&smm->uncommitted, &bop);
+- if (r) {
+- DMERR("bug in bop ring buffer");
+- break;
+- }
+-
+- r = commit_bop(smm, &bop);
+- if (r)
+- break;
+- }
+- }
++ if (smm->recursion_count == 1)
++ apply_bops(smm);
+
+ smm->recursion_count--;
+
+@@ -704,6 +712,12 @@ static int sm_metadata_extend(struct dm_space_map *sm, dm_block_t extra_blocks)
+ }
+ old_len = smm->begin;
+
++ r = apply_bops(smm);
++ if (r) {
++ DMERR("%s: apply_bops failed", __func__);
++ goto out;
++ }
++
+ r = sm_ll_commit(&smm->ll);
+ if (r)
+ goto out;
+@@ -773,6 +787,12 @@ int dm_sm_metadata_create(struct dm_space_map *sm,
+ if (r)
+ return r;
+
++ r = apply_bops(smm);
++ if (r) {
++ DMERR("%s: apply_bops failed", __func__);
++ return r;
++ }
++
+ return sm_metadata_commit(sm);
+ }
+
+diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c
+index 8001690d7576..ba6c8f6c42a1 100644
+--- a/drivers/media/dvb-frontends/af9013.c
++++ b/drivers/media/dvb-frontends/af9013.c
+@@ -605,6 +605,10 @@ static int af9013_set_frontend(struct dvb_frontend *fe)
+ }
+ }
+
++ /* Return an error if can't find bandwidth or the right clock */
++ if (i == ARRAY_SIZE(coeff_lut))
++ return -EINVAL;
++
+ ret = af9013_wr_regs(state, 0xae00, coeff_lut[i].val,
+ sizeof(coeff_lut[i].val));
+ }
+diff --git a/drivers/media/dvb-frontends/cx24116.c b/drivers/media/dvb-frontends/cx24116.c
+index 2916d7c74a1d..7bc68b355c0b 100644
+--- a/drivers/media/dvb-frontends/cx24116.c
++++ b/drivers/media/dvb-frontends/cx24116.c
+@@ -963,6 +963,10 @@ static int cx24116_send_diseqc_msg(struct dvb_frontend *fe,
+ struct cx24116_state *state = fe->demodulator_priv;
+ int i, ret;
+
++ /* Validate length */
++ if (d->msg_len > sizeof(d->msg))
++ return -EINVAL;
++
+ /* Dump DiSEqC message */
+ if (debug) {
+ printk(KERN_INFO "cx24116: %s(", __func__);
+@@ -974,10 +978,6 @@ static int cx24116_send_diseqc_msg(struct dvb_frontend *fe,
+ printk(") toneburst=%d\n", toneburst);
+ }
+
+- /* Validate length */
+- if (d->msg_len > (CX24116_ARGLEN - CX24116_DISEQC_MSGOFS))
+- return -EINVAL;
+-
+ /* DiSEqC message */
+ for (i = 0; i < d->msg_len; i++)
+ state->dsec_cmd.args[CX24116_DISEQC_MSGOFS + i] = d->msg[i];
+diff --git a/drivers/media/dvb-frontends/cx24117.c b/drivers/media/dvb-frontends/cx24117.c
+index acb965ce0358..af6363573efd 100644
+--- a/drivers/media/dvb-frontends/cx24117.c
++++ b/drivers/media/dvb-frontends/cx24117.c
+@@ -1043,7 +1043,7 @@ static int cx24117_send_diseqc_msg(struct dvb_frontend *fe,
+ dev_dbg(&state->priv->i2c->dev, ")\n");
+
+ /* Validate length */
+- if (d->msg_len > 15)
++ if (d->msg_len > sizeof(d->msg))
+ return -EINVAL;
+
+ /* DiSEqC message */
+diff --git a/drivers/media/dvb-frontends/s5h1420.c b/drivers/media/dvb-frontends/s5h1420.c
+index 93eeaf7118fd..0b4f8fe6bf99 100644
+--- a/drivers/media/dvb-frontends/s5h1420.c
++++ b/drivers/media/dvb-frontends/s5h1420.c
+@@ -180,7 +180,7 @@ static int s5h1420_send_master_cmd (struct dvb_frontend* fe,
+ int result = 0;
+
+ dprintk("enter %s\n", __func__);
+- if (cmd->msg_len > 8)
++ if (cmd->msg_len > sizeof(cmd->msg))
+ return -EINVAL;
+
+ /* setup for DISEQC */
+diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c
+index c82d25d53341..c9860845264f 100644
+--- a/drivers/media/pci/cx18/cx18-streams.c
++++ b/drivers/media/pci/cx18/cx18-streams.c
+@@ -90,6 +90,7 @@ static struct {
+ "encoder PCM audio",
+ VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET,
+ PCI_DMA_FROMDEVICE,
++ V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+ },
+ { /* CX18_ENC_STREAM_TYPE_IDX */
+ "encoder IDX",
+diff --git a/drivers/media/pci/saa7164/saa7164-encoder.c b/drivers/media/pci/saa7164/saa7164-encoder.c
+index 9266965412c3..7a0a65146723 100644
+--- a/drivers/media/pci/saa7164/saa7164-encoder.c
++++ b/drivers/media/pci/saa7164/saa7164-encoder.c
+@@ -721,13 +721,14 @@ static int vidioc_querycap(struct file *file, void *priv,
+ sizeof(cap->card));
+ sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
+
+- cap->capabilities =
++ cap->device_caps =
+ V4L2_CAP_VIDEO_CAPTURE |
+- V4L2_CAP_READWRITE |
+- 0;
++ V4L2_CAP_READWRITE |
++ V4L2_CAP_TUNER;
+
+- cap->capabilities |= V4L2_CAP_TUNER;
+- cap->version = 0;
++ cap->capabilities = cap->device_caps |
++ V4L2_CAP_VBI_CAPTURE |
++ V4L2_CAP_DEVICE_CAPS;
+
+ return 0;
+ }
+diff --git a/drivers/media/pci/saa7164/saa7164-vbi.c b/drivers/media/pci/saa7164/saa7164-vbi.c
+index 6e025fea2542..06117e6c0596 100644
+--- a/drivers/media/pci/saa7164/saa7164-vbi.c
++++ b/drivers/media/pci/saa7164/saa7164-vbi.c
+@@ -660,13 +660,14 @@ static int vidioc_querycap(struct file *file, void *priv,
+ sizeof(cap->card));
+ sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
+
+- cap->capabilities =
++ cap->device_caps =
+ V4L2_CAP_VBI_CAPTURE |
+- V4L2_CAP_READWRITE |
+- 0;
++ V4L2_CAP_READWRITE |
++ V4L2_CAP_TUNER;
+
+- cap->capabilities |= V4L2_CAP_TUNER;
+- cap->version = 0;
++ cap->capabilities = cap->device_caps |
++ V4L2_CAP_VIDEO_CAPTURE |
++ V4L2_CAP_DEVICE_CAPS;
+
+ return 0;
+ }
+diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c
+index 2b40393836ff..0d248ce02a9b 100644
+--- a/drivers/media/usb/dvb-usb/dib0700_core.c
++++ b/drivers/media/usb/dvb-usb/dib0700_core.c
+@@ -655,10 +655,20 @@ out:
+ struct dib0700_rc_response {
+ u8 report_id;
+ u8 data_state;
+- u8 system;
+- u8 not_system;
+- u8 data;
+- u8 not_data;
++ union {
++ struct {
++ u8 system;
++ u8 not_system;
++ u8 data;
++ u8 not_data;
++ } nec;
++ struct {
++ u8 not_used;
++ u8 system;
++ u8 data;
++ u8 not_data;
++ } rc5;
++ };
+ };
+ #define RC_MSG_SIZE_V1_20 6
+
+@@ -694,8 +704,8 @@ static void dib0700_rc_urb_completion(struct urb *purb)
+
+ deb_data("IR ID = %02X state = %02X System = %02X %02X Cmd = %02X %02X (len %d)\n",
+ poll_reply->report_id, poll_reply->data_state,
+- poll_reply->system, poll_reply->not_system,
+- poll_reply->data, poll_reply->not_data,
++ poll_reply->nec.system, poll_reply->nec.not_system,
++ poll_reply->nec.data, poll_reply->nec.not_data,
+ purb->actual_length);
+
+ switch (d->props.rc.core.protocol) {
+@@ -704,30 +714,30 @@ static void dib0700_rc_urb_completion(struct urb *purb)
+ toggle = 0;
+
+ /* NEC protocol sends repeat code as 0 0 0 FF */
+- if (poll_reply->system == 0x00 &&
+- poll_reply->not_system == 0x00 &&
+- poll_reply->data == 0x00 &&
+- poll_reply->not_data == 0xff) {
++ if (poll_reply->nec.system == 0x00 &&
++ poll_reply->nec.not_system == 0x00 &&
++ poll_reply->nec.data == 0x00 &&
++ poll_reply->nec.not_data == 0xff) {
+ poll_reply->data_state = 2;
+ break;
+ }
+
+- if ((poll_reply->data ^ poll_reply->not_data) != 0xff) {
++ if ((poll_reply->nec.data ^ poll_reply->nec.not_data) != 0xff) {
+ deb_data("NEC32 protocol\n");
+- keycode = RC_SCANCODE_NEC32(poll_reply->system << 24 |
+- poll_reply->not_system << 16 |
+- poll_reply->data << 8 |
+- poll_reply->not_data);
+- } else if ((poll_reply->system ^ poll_reply->not_system) != 0xff) {
++ keycode = RC_SCANCODE_NEC32(poll_reply->nec.system << 24 |
++ poll_reply->nec.not_system << 16 |
++ poll_reply->nec.data << 8 |
++ poll_reply->nec.not_data);
++ } else if ((poll_reply->nec.system ^ poll_reply->nec.not_system) != 0xff) {
+ deb_data("NEC extended protocol\n");
+- keycode = RC_SCANCODE_NECX(poll_reply->system << 8 |
+- poll_reply->not_system,
+- poll_reply->data);
++ keycode = RC_SCANCODE_NECX(poll_reply->nec.system << 8 |
++ poll_reply->nec.not_system,
++ poll_reply->nec.data);
+
+ } else {
+ deb_data("NEC normal protocol\n");
+- keycode = RC_SCANCODE_NEC(poll_reply->system,
+- poll_reply->data);
++ keycode = RC_SCANCODE_NEC(poll_reply->nec.system,
++ poll_reply->nec.data);
+ }
+
+ break;
+@@ -735,19 +745,19 @@ static void dib0700_rc_urb_completion(struct urb *purb)
+ deb_data("RC5 protocol\n");
+ protocol = RC_TYPE_RC5;
+ toggle = poll_reply->report_id;
+- keycode = RC_SCANCODE_RC5(poll_reply->system, poll_reply->data);
++ keycode = RC_SCANCODE_RC5(poll_reply->rc5.system, poll_reply->rc5.data);
++
++ if ((poll_reply->rc5.data ^ poll_reply->rc5.not_data) != 0xff) {
++ /* Key failed integrity check */
++ err("key failed integrity check: %02x %02x %02x %02x",
++ poll_reply->rc5.not_used, poll_reply->rc5.system,
++ poll_reply->rc5.data, poll_reply->rc5.not_data);
++ goto resubmit;
++ }
+
+ break;
+ }
+
+- if ((poll_reply->data + poll_reply->not_data) != 0xff) {
+- /* Key failed integrity check */
+- err("key failed integrity check: %02x %02x %02x %02x",
+- poll_reply->system, poll_reply->not_system,
+- poll_reply->data, poll_reply->not_data);
+- goto resubmit;
+- }
+-
+ rc_keydown(d->rc_dev, protocol, keycode, toggle);
+
+ resubmit:
+diff --git a/drivers/media/usb/dvb-usb/dib0700_devices.c b/drivers/media/usb/dvb-usb/dib0700_devices.c
+index d7d55a20e959..c170523226aa 100644
+--- a/drivers/media/usb/dvb-usb/dib0700_devices.c
++++ b/drivers/media/usb/dvb-usb/dib0700_devices.c
+@@ -3944,6 +3944,8 @@ struct dvb_usb_device_properties dib0700_devices[] = {
+
+ DIB0700_DEFAULT_STREAMING_CONFIG(0x02),
+ }},
++ .size_of_priv = sizeof(struct
++ dib0700_adapter_state),
+ }, {
+ .num_frontends = 1,
+ .fe = {{
+@@ -3956,6 +3958,8 @@ struct dvb_usb_device_properties dib0700_devices[] = {
+
+ DIB0700_DEFAULT_STREAMING_CONFIG(0x03),
+ }},
++ .size_of_priv = sizeof(struct
++ dib0700_adapter_state),
+ }
+ },
+
+@@ -4009,6 +4013,8 @@ struct dvb_usb_device_properties dib0700_devices[] = {
+
+ DIB0700_DEFAULT_STREAMING_CONFIG(0x02),
+ }},
++ .size_of_priv = sizeof(struct
++ dib0700_adapter_state),
+ },
+ },
+
+diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
+index 66ada01c796c..cf9d644a8aff 100644
+--- a/drivers/media/v4l2-core/videobuf2-core.c
++++ b/drivers/media/v4l2-core/videobuf2-core.c
+@@ -1237,6 +1237,23 @@ void vb2_discard_done(struct vb2_queue *q)
+ }
+ EXPORT_SYMBOL_GPL(vb2_discard_done);
+
++static void vb2_warn_zero_bytesused(struct vb2_buffer *vb)
++{
++ static bool __check_once __read_mostly;
++
++ if (__check_once)
++ return;
++
++ __check_once = true;
++ __WARN();
++
++ pr_warn_once("use of bytesused == 0 is deprecated and will be removed in the future,\n");
++ if (vb->vb2_queue->allow_zero_bytesused)
++ pr_warn_once("use VIDIOC_DECODER_CMD(V4L2_DEC_CMD_STOP) instead.\n");
++ else
++ pr_warn_once("use the actual size instead.\n");
++}
++
+ /**
+ * __fill_vb2_buffer() - fill a vb2_buffer with information provided in a
+ * v4l2_buffer by the userspace. The caller has already verified that struct
+@@ -1247,16 +1264,6 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b
+ {
+ unsigned int plane;
+
+- if (V4L2_TYPE_IS_OUTPUT(b->type)) {
+- if (WARN_ON_ONCE(b->bytesused == 0)) {
+- pr_warn_once("use of bytesused == 0 is deprecated and will be removed in the future,\n");
+- if (vb->vb2_queue->allow_zero_bytesused)
+- pr_warn_once("use VIDIOC_DECODER_CMD(V4L2_DEC_CMD_STOP) instead.\n");
+- else
+- pr_warn_once("use the actual size instead.\n");
+- }
+- }
+-
+ if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
+ if (b->memory == V4L2_MEMORY_USERPTR) {
+ for (plane = 0; plane < vb->num_planes; ++plane) {
+@@ -1297,6 +1304,9 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b
+ struct v4l2_plane *pdst = &v4l2_planes[plane];
+ struct v4l2_plane *psrc = &b->m.planes[plane];
+
++ if (psrc->bytesused == 0)
++ vb2_warn_zero_bytesused(vb);
++
+ if (vb->vb2_queue->allow_zero_bytesused)
+ pdst->bytesused = psrc->bytesused;
+ else
+@@ -1331,6 +1341,9 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b
+ }
+
+ if (V4L2_TYPE_IS_OUTPUT(b->type)) {
++ if (b->bytesused == 0)
++ vb2_warn_zero_bytesused(vb);
++
+ if (vb->vb2_queue->allow_zero_bytesused)
+ v4l2_planes[0].bytesused = b->bytesused;
+ else
+diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
+index 60f7141a6b02..31d2627d9d4d 100644
+--- a/drivers/mmc/card/block.c
++++ b/drivers/mmc/card/block.c
+@@ -208,6 +208,8 @@ static ssize_t power_ro_lock_show(struct device *dev,
+
+ ret = snprintf(buf, PAGE_SIZE, "%d\n", locked);
+
++ mmc_blk_put(md);
++
+ return ret;
+ }
+
+@@ -1910,9 +1912,11 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
+ break;
+ case MMC_BLK_CMD_ERR:
+ ret = mmc_blk_cmd_err(md, card, brq, req, ret);
+- if (!mmc_blk_reset(md, card->host, type))
+- break;
+- goto cmd_abort;
++ if (mmc_blk_reset(md, card->host, type))
++ goto cmd_abort;
++ if (!ret)
++ goto start_new_req;
++ break;
+ case MMC_BLK_RETRY:
+ if (retry++ < 5)
+ break;
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index 9231cdfe2757..d3dbb28057e9 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -3315,13 +3315,14 @@ int sdhci_add_host(struct sdhci_host *host)
+ SDHCI_MAX_CURRENT_MULTIPLIER;
+ }
+
+- /* If OCR set by external regulators, use it instead */
++ /* If OCR set by host, use it instead. */
++ if (host->ocr_mask)
++ ocr_avail = host->ocr_mask;
++
++ /* If OCR set by external regulators, give it highest prio. */
+ if (mmc->ocr_avail)
+ ocr_avail = mmc->ocr_avail;
+
+- if (host->ocr_mask)
+- ocr_avail &= host->ocr_mask;
+-
+ mmc->ocr_avail = ocr_avail;
+ mmc->ocr_avail_sdio = ocr_avail;
+ if (host->ocr_avail_sdio)
+diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c
+index dc79ed85030b..32e77755a9c6 100644
+--- a/drivers/net/ethernet/intel/e1000e/82571.c
++++ b/drivers/net/ethernet/intel/e1000e/82571.c
+@@ -2010,7 +2010,7 @@ const struct e1000_info e1000_82573_info = {
+ .flags2 = FLAG2_DISABLE_ASPM_L1
+ | FLAG2_DISABLE_ASPM_L0S,
+ .pba = 20,
+- .max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN,
++ .max_hw_frame_size = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN,
+ .get_variants = e1000_get_variants_82571,
+ .mac_ops = &e82571_mac_ops,
+ .phy_ops = &e82_phy_ops_m88,
+diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
+index 9d81c0317433..e2498dbf3c3b 100644
+--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
++++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
+@@ -1563,7 +1563,7 @@ static s32 e1000_get_variants_ich8lan(struct e1000_adapter *adapter)
+ ((adapter->hw.mac.type >= e1000_pch2lan) &&
+ (!(er32(CTRL_EXT) & E1000_CTRL_EXT_LSECCK)))) {
+ adapter->flags &= ~FLAG_HAS_JUMBO_FRAMES;
+- adapter->max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN;
++ adapter->max_hw_frame_size = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
+
+ hw->mac.ops.blink_led = NULL;
+ }
+@@ -5681,7 +5681,7 @@ const struct e1000_info e1000_ich8_info = {
+ | FLAG_HAS_FLASH
+ | FLAG_APME_IN_WUC,
+ .pba = 8,
+- .max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN,
++ .max_hw_frame_size = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN,
+ .get_variants = e1000_get_variants_ich8lan,
+ .mac_ops = &ich8_mac_ops,
+ .phy_ops = &ich8_phy_ops,
+@@ -5754,7 +5754,7 @@ const struct e1000_info e1000_pch2_info = {
+ .flags2 = FLAG2_HAS_PHY_STATS
+ | FLAG2_HAS_EEE,
+ .pba = 26,
+- .max_hw_frame_size = 9018,
++ .max_hw_frame_size = 9022,
+ .get_variants = e1000_get_variants_ich8lan,
+ .mac_ops = &ich8_mac_ops,
+ .phy_ops = &ich8_phy_ops,
+@@ -5774,7 +5774,7 @@ const struct e1000_info e1000_pch_lpt_info = {
+ .flags2 = FLAG2_HAS_PHY_STATS
+ | FLAG2_HAS_EEE,
+ .pba = 26,
+- .max_hw_frame_size = 9018,
++ .max_hw_frame_size = 9022,
+ .get_variants = e1000_get_variants_ich8lan,
+ .mac_ops = &ich8_mac_ops,
+ .phy_ops = &ich8_phy_ops,
+@@ -5794,7 +5794,7 @@ const struct e1000_info e1000_pch_spt_info = {
+ .flags2 = FLAG2_HAS_PHY_STATS
+ | FLAG2_HAS_EEE,
+ .pba = 26,
+- .max_hw_frame_size = 9018,
++ .max_hw_frame_size = 9022,
+ .get_variants = e1000_get_variants_ich8lan,
+ .mac_ops = &ich8_mac_ops,
+ .phy_ops = &ich8_phy_ops,
+diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
+index c509a5c900f5..68913d103542 100644
+--- a/drivers/net/ethernet/intel/e1000e/netdev.c
++++ b/drivers/net/ethernet/intel/e1000e/netdev.c
+@@ -3807,7 +3807,7 @@ void e1000e_reset(struct e1000_adapter *adapter)
+ /* reset Packet Buffer Allocation to default */
+ ew32(PBA, pba);
+
+- if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
++ if (adapter->max_frame_size > (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)) {
+ /* To maintain wire speed transmits, the Tx FIFO should be
+ * large enough to accommodate two full transmit packets,
+ * rounded up to the next 1KB and expressed in KB. Likewise,
+@@ -4196,9 +4196,9 @@ static int e1000_sw_init(struct e1000_adapter *adapter)
+ {
+ struct net_device *netdev = adapter->netdev;
+
+- adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
++ adapter->rx_buffer_len = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
+ adapter->rx_ps_bsize0 = 128;
+- adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
++ adapter->max_frame_size = netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+ adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
+ adapter->tx_ring_count = E1000_DEFAULT_TXD;
+ adapter->rx_ring_count = E1000_DEFAULT_RXD;
+@@ -5781,17 +5781,17 @@ struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
+ static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
+ {
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+- int max_frame = new_mtu + VLAN_HLEN + ETH_HLEN + ETH_FCS_LEN;
++ int max_frame = new_mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+
+ /* Jumbo frame support */
+- if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
++ if ((max_frame > (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)) &&
+ !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
+ e_err("Jumbo Frames not supported.\n");
+ return -EINVAL;
+ }
+
+ /* Supported frame sizes */
+- if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
++ if ((new_mtu < (VLAN_ETH_ZLEN + ETH_FCS_LEN)) ||
+ (max_frame > adapter->max_hw_frame_size)) {
+ e_err("Unsupported MTU setting\n");
+ return -EINVAL;
+@@ -5831,10 +5831,8 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
+ adapter->rx_buffer_len = 4096;
+
+ /* adjust allocation if LPE protects us, and we aren't using SBP */
+- if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
+- (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
+- adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
+- + ETH_FCS_LEN;
++ if (max_frame <= (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN))
++ adapter->rx_buffer_len = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
+
+ if (netif_running(netdev))
+ e1000e_up(adapter);
+diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
+index e82a0d4ce23f..5dbc617ecf8a 100644
+--- a/drivers/net/wireless/ath/ath9k/htc.h
++++ b/drivers/net/wireless/ath/ath9k/htc.h
+@@ -440,9 +440,9 @@ static inline void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv)
+ }
+ #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
+
+-#define OP_BT_PRIORITY_DETECTED BIT(3)
+-#define OP_BT_SCAN BIT(4)
+-#define OP_TSF_RESET BIT(6)
++#define OP_BT_PRIORITY_DETECTED 3
++#define OP_BT_SCAN 4
++#define OP_TSF_RESET 6
+
+ enum htc_op_flags {
+ HTC_FWFLAG_NO_RMW,
+diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
+index b0badef71ce7..d5f2fbf62d72 100644
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -216,11 +216,13 @@ static bool ath_prepare_reset(struct ath_softc *sc)
+ ath_stop_ani(sc);
+ ath9k_hw_disable_interrupts(ah);
+
+- if (!ath_drain_all_txq(sc))
+- ret = false;
+-
+- if (!ath_stoprecv(sc))
+- ret = false;
++ if (AR_SREV_9300_20_OR_LATER(ah)) {
++ ret &= ath_stoprecv(sc);
++ ret &= ath_drain_all_txq(sc);
++ } else {
++ ret &= ath_drain_all_txq(sc);
++ ret &= ath_stoprecv(sc);
++ }
+
+ return ret;
+ }
+diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+index 9ac04c1ea706..8c17b943cc6f 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
++++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+@@ -6,7 +6,7 @@
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
++ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+@@ -32,7 +32,7 @@
+ * BSD LICENSE
+ *
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
++ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+@@ -1356,6 +1356,7 @@ static ssize_t iwl_dbgfs_d0i3_refs_read(struct file *file,
+ PRINT_MVM_REF(IWL_MVM_REF_UCODE_DOWN);
+ PRINT_MVM_REF(IWL_MVM_REF_SCAN);
+ PRINT_MVM_REF(IWL_MVM_REF_ROC);
++ PRINT_MVM_REF(IWL_MVM_REF_ROC_AUX);
+ PRINT_MVM_REF(IWL_MVM_REF_P2P_CLIENT);
+ PRINT_MVM_REF(IWL_MVM_REF_AP_IBSS);
+ PRINT_MVM_REF(IWL_MVM_REF_USER);
+diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+index dda9f7b5f342..60c138a9bf4f 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
++++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+@@ -1404,7 +1404,7 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
+ * The work item could be running or queued if the
+ * ROC time event stops just as we get here.
+ */
+- cancel_work_sync(&mvm->roc_done_wk);
++ flush_work(&mvm->roc_done_wk);
+
+ iwl_trans_stop_device(mvm->trans);
+
+diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
+index cf70f681d1ac..6af21daaaaef 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
++++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
+@@ -275,6 +275,7 @@ enum iwl_mvm_ref_type {
+ IWL_MVM_REF_UCODE_DOWN,
+ IWL_MVM_REF_SCAN,
+ IWL_MVM_REF_ROC,
++ IWL_MVM_REF_ROC_AUX,
+ IWL_MVM_REF_P2P_CLIENT,
+ IWL_MVM_REF_AP_IBSS,
+ IWL_MVM_REF_USER,
+diff --git a/drivers/net/wireless/iwlwifi/mvm/time-event.c b/drivers/net/wireless/iwlwifi/mvm/time-event.c
+index fd7b0d36f9a6..a7448cf01688 100644
+--- a/drivers/net/wireless/iwlwifi/mvm/time-event.c
++++ b/drivers/net/wireless/iwlwifi/mvm/time-event.c
+@@ -6,7 +6,7 @@
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
++ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+@@ -32,7 +32,7 @@
+ * BSD LICENSE
+ *
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
++ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+@@ -108,12 +108,14 @@ void iwl_mvm_roc_done_wk(struct work_struct *wk)
+ * in the case that the time event actually completed in the firmware
+ * (which is handled in iwl_mvm_te_handle_notif).
+ */
+- if (test_and_clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
++ if (test_and_clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status)) {
+ queues |= BIT(IWL_MVM_OFFCHANNEL_QUEUE);
+- if (test_and_clear_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
++ iwl_mvm_unref(mvm, IWL_MVM_REF_ROC);
++ }
++ if (test_and_clear_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) {
+ queues |= BIT(mvm->aux_queue);
+-
+- iwl_mvm_unref(mvm, IWL_MVM_REF_ROC);
++ iwl_mvm_unref(mvm, IWL_MVM_REF_ROC_AUX);
++ }
+
+ synchronize_net();
+
+@@ -393,6 +395,7 @@ static int iwl_mvm_aux_roc_te_handle_notif(struct iwl_mvm *mvm,
+ } else if (le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_START) {
+ set_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status);
+ te_data->running = true;
++ iwl_mvm_ref(mvm, IWL_MVM_REF_ROC_AUX);
+ ieee80211_ready_on_channel(mvm->hw); /* Start TE */
+ } else {
+ IWL_DEBUG_TE(mvm,
+diff --git a/drivers/net/wireless/rtlwifi/rtl8188ee/hw.c b/drivers/net/wireless/rtlwifi/rtl8188ee/hw.c
+index 86ce5b1930e6..e5d8108f1987 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8188ee/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8188ee/hw.c
+@@ -1354,27 +1354,11 @@ void rtl88ee_set_qos(struct ieee80211_hw *hw, int aci)
+ }
+ }
+
+-static void rtl88ee_clear_interrupt(struct ieee80211_hw *hw)
+-{
+- struct rtl_priv *rtlpriv = rtl_priv(hw);
+- u32 tmp;
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISR);
+- rtl_write_dword(rtlpriv, REG_HISR, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISRE);
+- rtl_write_dword(rtlpriv, REG_HISRE, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HSISR);
+- rtl_write_dword(rtlpriv, REG_HSISR, tmp);
+-}
+-
+ void rtl88ee_enable_interrupt(struct ieee80211_hw *hw)
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
+
+- rtl88ee_clear_interrupt(hw);/*clear it here first*/
+ rtl_write_dword(rtlpriv, REG_HIMR,
+ rtlpci->irq_mask[0] & 0xFFFFFFFF);
+ rtl_write_dword(rtlpriv, REG_HIMRE,
+diff --git a/drivers/net/wireless/rtlwifi/rtl8192ee/hw.c b/drivers/net/wireless/rtlwifi/rtl8192ee/hw.c
+index da0a6125f314..cbf2ca7c7c6d 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8192ee/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8192ee/hw.c
+@@ -1584,28 +1584,11 @@ void rtl92ee_set_qos(struct ieee80211_hw *hw, int aci)
+ }
+ }
+
+-static void rtl92ee_clear_interrupt(struct ieee80211_hw *hw)
+-{
+- struct rtl_priv *rtlpriv = rtl_priv(hw);
+- u32 tmp;
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISR);
+- rtl_write_dword(rtlpriv, REG_HISR, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISRE);
+- rtl_write_dword(rtlpriv, REG_HISRE, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HSISR);
+- rtl_write_dword(rtlpriv, REG_HSISR, tmp);
+-}
+-
+ void rtl92ee_enable_interrupt(struct ieee80211_hw *hw)
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
+
+- rtl92ee_clear_interrupt(hw);/*clear it here first*/
+-
+ rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] & 0xFFFFFFFF);
+ rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] & 0xFFFFFFFF);
+ rtlpci->irq_enabled = true;
+diff --git a/drivers/net/wireless/rtlwifi/rtl8723ae/hw.c b/drivers/net/wireless/rtlwifi/rtl8723ae/hw.c
+index 67bb47d77b68..a4b7eac6856f 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8723ae/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8723ae/hw.c
+@@ -1258,18 +1258,6 @@ void rtl8723e_set_qos(struct ieee80211_hw *hw, int aci)
+ }
+ }
+
+-static void rtl8723e_clear_interrupt(struct ieee80211_hw *hw)
+-{
+- struct rtl_priv *rtlpriv = rtl_priv(hw);
+- u32 tmp;
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISR);
+- rtl_write_dword(rtlpriv, REG_HISR, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISRE);
+- rtl_write_dword(rtlpriv, REG_HISRE, tmp);
+-}
+-
+ void rtl8723e_enable_interrupt(struct ieee80211_hw *hw)
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+@@ -1284,7 +1272,6 @@ void rtl8723e_disable_interrupt(struct ieee80211_hw *hw)
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
+- rtl8723e_clear_interrupt(hw);/*clear it here first*/
+ rtl_write_dword(rtlpriv, 0x3a8, IMR8190_DISABLED);
+ rtl_write_dword(rtlpriv, 0x3ac, IMR8190_DISABLED);
+ rtlpci->irq_enabled = false;
+diff --git a/drivers/net/wireless/rtlwifi/rtl8723be/hw.c b/drivers/net/wireless/rtlwifi/rtl8723be/hw.c
+index b681af3c7a35..b9417268427e 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8723be/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8723be/hw.c
+@@ -1634,28 +1634,11 @@ void rtl8723be_set_qos(struct ieee80211_hw *hw, int aci)
+ }
+ }
+
+-static void rtl8723be_clear_interrupt(struct ieee80211_hw *hw)
+-{
+- struct rtl_priv *rtlpriv = rtl_priv(hw);
+- u32 tmp;
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISR);
+- rtl_write_dword(rtlpriv, REG_HISR, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISRE);
+- rtl_write_dword(rtlpriv, REG_HISRE, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HSISR);
+- rtl_write_dword(rtlpriv, REG_HSISR, tmp);
+-}
+-
+ void rtl8723be_enable_interrupt(struct ieee80211_hw *hw)
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
+
+- rtl8723be_clear_interrupt(hw);/*clear it here first*/
+-
+ rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] & 0xFFFFFFFF);
+ rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] & 0xFFFFFFFF);
+ rtlpci->irq_enabled = true;
+diff --git a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+index 8704eee9f3a4..57966e3c8e8d 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+@@ -2253,31 +2253,11 @@ void rtl8821ae_set_qos(struct ieee80211_hw *hw, int aci)
+ }
+ }
+
+-static void rtl8821ae_clear_interrupt(struct ieee80211_hw *hw)
+-{
+- struct rtl_priv *rtlpriv = rtl_priv(hw);
+- u32 tmp;
+- tmp = rtl_read_dword(rtlpriv, REG_HISR);
+- /*printk("clear interrupt first:\n");
+- printk("0x%x = 0x%08x\n",REG_HISR, tmp);*/
+- rtl_write_dword(rtlpriv, REG_HISR, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HISRE);
+- /*printk("0x%x = 0x%08x\n",REG_HISRE, tmp);*/
+- rtl_write_dword(rtlpriv, REG_HISRE, tmp);
+-
+- tmp = rtl_read_dword(rtlpriv, REG_HSISR);
+- /*printk("0x%x = 0x%08x\n",REG_HSISR, tmp);*/
+- rtl_write_dword(rtlpriv, REG_HSISR, tmp);
+-}
+-
+ void rtl8821ae_enable_interrupt(struct ieee80211_hw *hw)
+ {
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
+
+- rtl8821ae_clear_interrupt(hw);/*clear it here first*/
+-
+ rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] & 0xFFFFFFFF);
+ rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] & 0xFFFFFFFF);
+ rtlpci->irq_enabled = true;
+diff --git a/drivers/nfc/st21nfcb/i2c.c b/drivers/nfc/st21nfcb/i2c.c
+index 76a4cad41cec..c44f8cf5391a 100644
+--- a/drivers/nfc/st21nfcb/i2c.c
++++ b/drivers/nfc/st21nfcb/i2c.c
+@@ -87,11 +87,6 @@ static void st21nfcb_nci_i2c_disable(void *phy_id)
+ gpio_set_value(phy->gpio_reset, 1);
+ }
+
+-static void st21nfcb_nci_remove_header(struct sk_buff *skb)
+-{
+- skb_pull(skb, ST21NFCB_FRAME_HEADROOM);
+-}
+-
+ /*
+ * Writing a frame must not return the number of written bytes.
+ * It must return either zero for success, or <0 for error.
+@@ -121,8 +116,6 @@ static int st21nfcb_nci_i2c_write(void *phy_id, struct sk_buff *skb)
+ r = 0;
+ }
+
+- st21nfcb_nci_remove_header(skb);
+-
+ return r;
+ }
+
+@@ -366,9 +359,6 @@ static int st21nfcb_nci_i2c_remove(struct i2c_client *client)
+
+ ndlc_remove(phy->ndlc);
+
+- if (phy->powered)
+- st21nfcb_nci_i2c_disable(phy);
+-
+ return 0;
+ }
+
+diff --git a/drivers/nfc/st21nfcb/st21nfcb.c b/drivers/nfc/st21nfcb/st21nfcb.c
+index ca9871ab3fb3..c7dc282d5c3b 100644
+--- a/drivers/nfc/st21nfcb/st21nfcb.c
++++ b/drivers/nfc/st21nfcb/st21nfcb.c
+@@ -131,11 +131,8 @@ EXPORT_SYMBOL_GPL(st21nfcb_nci_probe);
+
+ void st21nfcb_nci_remove(struct nci_dev *ndev)
+ {
+- struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
+-
+ nci_unregister_device(ndev);
+ nci_free_device(ndev);
+- kfree(info);
+ }
+ EXPORT_SYMBOL_GPL(st21nfcb_nci_remove);
+
+diff --git a/drivers/of/address.c b/drivers/of/address.c
+index 6906a3f61bd8..8bfda6ade2c0 100644
+--- a/drivers/of/address.c
++++ b/drivers/of/address.c
+@@ -712,7 +712,7 @@ int __weak pci_register_io_range(phys_addr_t addr, resource_size_t size)
+ }
+
+ /* add the range to the list */
+- range = kzalloc(sizeof(*range), GFP_KERNEL);
++ range = kzalloc(sizeof(*range), GFP_ATOMIC);
+ if (!range) {
+ err = -ENOMEM;
+ goto end_register;
+diff --git a/drivers/of/base.c b/drivers/of/base.c
+index f0650265febf..5ed97246c2e7 100644
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -89,7 +89,7 @@ EXPORT_SYMBOL(of_n_size_cells);
+ #ifdef CONFIG_NUMA
+ int __weak of_node_to_nid(struct device_node *np)
+ {
+- return numa_node_id();
++ return NUMA_NO_NODE;
+ }
+ #endif
+
+diff --git a/drivers/phy/phy-berlin-usb.c b/drivers/phy/phy-berlin-usb.c
+index c6fc95b53083..ab54f2864451 100644
+--- a/drivers/phy/phy-berlin-usb.c
++++ b/drivers/phy/phy-berlin-usb.c
+@@ -106,8 +106,8 @@
+ static const u32 phy_berlin_pll_dividers[] = {
+ /* Berlin 2 */
+ CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54),
+- /* Berlin 2CD */
+- CLK_REF_DIV(0x6) | FEEDBACK_CLK_DIV(0x55),
++ /* Berlin 2CD/Q */
++ CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54),
+ };
+
+ struct phy_berlin_usb_priv {
+diff --git a/drivers/phy/phy-twl4030-usb.c b/drivers/phy/phy-twl4030-usb.c
+index bc42d6a8939f..8882afbef688 100644
+--- a/drivers/phy/phy-twl4030-usb.c
++++ b/drivers/phy/phy-twl4030-usb.c
+@@ -711,7 +711,6 @@ static int twl4030_usb_probe(struct platform_device *pdev)
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_set_autosuspend_delay(&pdev->dev, 2000);
+ pm_runtime_enable(&pdev->dev);
+- pm_runtime_get_sync(&pdev->dev);
+
+ /* Our job is to use irqs and status from the power module
+ * to keep the transceiver disabled when nothing's connected.
+diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-370.c b/drivers/pinctrl/mvebu/pinctrl-armada-370.c
+index 03aa58c4cb85..1eb084c3b0c9 100644
+--- a/drivers/pinctrl/mvebu/pinctrl-armada-370.c
++++ b/drivers/pinctrl/mvebu/pinctrl-armada-370.c
+@@ -370,11 +370,11 @@ static struct mvebu_mpp_mode mv88f6710_mpp_modes[] = {
+ MPP_MODE(64,
+ MPP_FUNCTION(0x0, "gpio", NULL),
+ MPP_FUNCTION(0x1, "spi0", "miso"),
+- MPP_FUNCTION(0x2, "spi0-1", "cs1")),
++ MPP_FUNCTION(0x2, "spi0", "cs1")),
+ MPP_MODE(65,
+ MPP_FUNCTION(0x0, "gpio", NULL),
+ MPP_FUNCTION(0x1, "spi0", "mosi"),
+- MPP_FUNCTION(0x2, "spi0-1", "cs2")),
++ MPP_FUNCTION(0x2, "spi0", "cs2")),
+ };
+
+ static struct mvebu_pinctrl_soc_info armada_370_pinctrl_info;
+diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-375.c b/drivers/pinctrl/mvebu/pinctrl-armada-375.c
+index ca1e7571fedb..203291bde608 100644
+--- a/drivers/pinctrl/mvebu/pinctrl-armada-375.c
++++ b/drivers/pinctrl/mvebu/pinctrl-armada-375.c
+@@ -92,19 +92,17 @@ static struct mvebu_mpp_mode mv88f6720_mpp_modes[] = {
+ MPP_FUNCTION(0x5, "nand", "io1")),
+ MPP_MODE(8,
+ MPP_FUNCTION(0x0, "gpio", NULL),
+- MPP_FUNCTION(0x1, "dev ", "bootcs"),
++ MPP_FUNCTION(0x1, "dev", "bootcs"),
+ MPP_FUNCTION(0x2, "spi0", "cs0"),
+ MPP_FUNCTION(0x3, "spi1", "cs0"),
+ MPP_FUNCTION(0x5, "nand", "ce")),
+ MPP_MODE(9,
+ MPP_FUNCTION(0x0, "gpio", NULL),
+- MPP_FUNCTION(0x1, "nf", "wen"),
+ MPP_FUNCTION(0x2, "spi0", "sck"),
+ MPP_FUNCTION(0x3, "spi1", "sck"),
+ MPP_FUNCTION(0x5, "nand", "we")),
+ MPP_MODE(10,
+ MPP_FUNCTION(0x0, "gpio", NULL),
+- MPP_FUNCTION(0x1, "nf", "ren"),
+ MPP_FUNCTION(0x2, "dram", "vttctrl"),
+ MPP_FUNCTION(0x3, "led", "c1"),
+ MPP_FUNCTION(0x5, "nand", "re"),
+diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-38x.c b/drivers/pinctrl/mvebu/pinctrl-armada-38x.c
+index 83bbcc72be1f..ff411a53b5a4 100644
+--- a/drivers/pinctrl/mvebu/pinctrl-armada-38x.c
++++ b/drivers/pinctrl/mvebu/pinctrl-armada-38x.c
+@@ -94,37 +94,39 @@ static struct mvebu_mpp_mode armada_38x_mpp_modes[] = {
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ge0", "rxd0", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "pcie0", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(3, "pcie1", "rstout", V_88F6820_PLUS),
+ MPP_VAR_FUNCTION(4, "spi0", "cs1", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "dev", "ad14", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(5, "dev", "ad14", V_88F6810_PLUS),
++ MPP_VAR_FUNCTION(6, "pcie3", "clkreq", V_88F6810_PLUS)),
+ MPP_MODE(13,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ge0", "rxd1", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "pcie0", "clkreq", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "pcie1", "clkreq", V_88F6820_PLUS),
+ MPP_VAR_FUNCTION(4, "spi0", "cs2", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "dev", "ad15", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(5, "dev", "ad15", V_88F6810_PLUS),
++ MPP_VAR_FUNCTION(6, "pcie2", "clkreq", V_88F6810_PLUS)),
+ MPP_MODE(14,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ge0", "rxd2", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "ptp", "clk", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "m", "vtt_ctrl", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(4, "spi0", "cs3", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "dev", "wen1", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(5, "dev", "wen1", V_88F6810_PLUS),
++ MPP_VAR_FUNCTION(6, "pcie3", "clkreq", V_88F6810_PLUS)),
+ MPP_MODE(15,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ge0", "rxd3", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "ge", "mdc slave", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "pcie0", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(4, "spi0", "mosi", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "pcie1", "rstout", V_88F6820_PLUS)),
++ MPP_VAR_FUNCTION(4, "spi0", "mosi", V_88F6810_PLUS)),
+ MPP_MODE(16,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ge0", "rxctl", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "ge", "mdio slave", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "m", "decc_err", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(4, "spi0", "miso", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "pcie0", "clkreq", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(5, "pcie0", "clkreq", V_88F6810_PLUS),
++ MPP_VAR_FUNCTION(6, "pcie1", "clkreq", V_88F6820_PLUS)),
+ MPP_MODE(17,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ge0", "rxclk", V_88F6810_PLUS),
+@@ -137,13 +139,12 @@ static struct mvebu_mpp_mode armada_38x_mpp_modes[] = {
+ MPP_VAR_FUNCTION(1, "ge0", "rxerr", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "ptp", "trig_gen", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "ua1", "txd", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(4, "spi0", "cs0", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "pcie1", "rstout", V_88F6820_PLUS)),
++ MPP_VAR_FUNCTION(4, "spi0", "cs0", V_88F6810_PLUS)),
+ MPP_MODE(19,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ge0", "col", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "ptp", "event_req", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(3, "pcie0", "clkreq", V_88F6810_PLUS),
++ MPP_VAR_FUNCTION(3, "ge0", "txerr", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(4, "sata1", "prsnt", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(5, "ua0", "cts", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(6, "ua1", "rxd", V_88F6810_PLUS)),
+@@ -151,7 +152,6 @@ static struct mvebu_mpp_mode armada_38x_mpp_modes[] = {
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ge0", "txclk", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "ptp", "clk", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(3, "pcie1", "rstout", V_88F6820_PLUS),
+ MPP_VAR_FUNCTION(4, "sata0", "prsnt", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(5, "ua0", "rts", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(6, "ua1", "txd", V_88F6810_PLUS)),
+@@ -277,35 +277,27 @@ static struct mvebu_mpp_mode armada_38x_mpp_modes[] = {
+ MPP_VAR_FUNCTION(1, "pcie0", "clkreq", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "m", "vtt_ctrl", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "m", "decc_err", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(4, "pcie0", "rstout", V_88F6810_PLUS),
++ MPP_VAR_FUNCTION(4, "spi1", "cs2", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(5, "dev", "clkout", V_88F6810_PLUS)),
+ MPP_MODE(44,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "sata0", "prsnt", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "sata1", "prsnt", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "sata2", "prsnt", V_88F6828),
+- MPP_VAR_FUNCTION(4, "sata3", "prsnt", V_88F6828),
+- MPP_VAR_FUNCTION(5, "pcie0", "rstout", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(4, "sata3", "prsnt", V_88F6828)),
+ MPP_MODE(45,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ref", "clk_out0", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(2, "pcie0", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(3, "pcie1", "rstout", V_88F6820_PLUS),
+- MPP_VAR_FUNCTION(4, "pcie2", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "pcie3", "rstout", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(2, "pcie0", "rstout", V_88F6810_PLUS)),
+ MPP_MODE(46,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "ref", "clk_out1", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(2, "pcie0", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(3, "pcie1", "rstout", V_88F6820_PLUS),
+- MPP_VAR_FUNCTION(4, "pcie2", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "pcie3", "rstout", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(2, "pcie0", "rstout", V_88F6810_PLUS)),
+ MPP_MODE(47,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "sata0", "prsnt", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "sata1", "prsnt", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "sata2", "prsnt", V_88F6828),
+- MPP_VAR_FUNCTION(4, "spi1", "cs2", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(5, "sata3", "prsnt", V_88F6828)),
+ MPP_MODE(48,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+@@ -313,18 +305,19 @@ static struct mvebu_mpp_mode armada_38x_mpp_modes[] = {
+ MPP_VAR_FUNCTION(2, "m", "vtt_ctrl", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "tdm2c", "pclk", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(4, "audio", "mclk", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "sd0", "d4", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(5, "sd0", "d4", V_88F6810_PLUS),
++ MPP_VAR_FUNCTION(6, "pcie0", "clkreq", V_88F6810_PLUS)),
+ MPP_MODE(49,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "sata2", "prsnt", V_88F6828),
+ MPP_VAR_FUNCTION(2, "sata3", "prsnt", V_88F6828),
+ MPP_VAR_FUNCTION(3, "tdm2c", "fsync", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(4, "audio", "lrclk", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(5, "sd0", "d5", V_88F6810_PLUS)),
++ MPP_VAR_FUNCTION(5, "sd0", "d5", V_88F6810_PLUS),
++ MPP_VAR_FUNCTION(6, "pcie1", "clkreq", V_88F6820_PLUS)),
+ MPP_MODE(50,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "pcie0", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(2, "pcie1", "rstout", V_88F6820_PLUS),
+ MPP_VAR_FUNCTION(3, "tdm2c", "drx", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(4, "audio", "extclk", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(5, "sd0", "cmd", V_88F6810_PLUS)),
+@@ -336,7 +329,6 @@ static struct mvebu_mpp_mode armada_38x_mpp_modes[] = {
+ MPP_MODE(52,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "pcie0", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(2, "pcie1", "rstout", V_88F6820_PLUS),
+ MPP_VAR_FUNCTION(3, "tdm2c", "intn", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(4, "audio", "sdi", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(5, "sd0", "d6", V_88F6810_PLUS)),
+@@ -352,7 +344,7 @@ static struct mvebu_mpp_mode armada_38x_mpp_modes[] = {
+ MPP_VAR_FUNCTION(1, "sata0", "prsnt", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "sata1", "prsnt", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(3, "pcie0", "rstout", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(4, "pcie1", "rstout", V_88F6820_PLUS),
++ MPP_VAR_FUNCTION(4, "ge0", "txerr", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(5, "sd0", "d3", V_88F6810_PLUS)),
+ MPP_MODE(55,
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+@@ -382,7 +374,6 @@ static struct mvebu_mpp_mode armada_38x_mpp_modes[] = {
+ MPP_VAR_FUNCTION(0, "gpio", NULL, V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(1, "pcie0", "rstout", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(2, "i2c1", "sda", V_88F6810_PLUS),
+- MPP_VAR_FUNCTION(3, "pcie1", "rstout", V_88F6820_PLUS),
+ MPP_VAR_FUNCTION(4, "spi1", "cs0", V_88F6810_PLUS),
+ MPP_VAR_FUNCTION(5, "sd0", "d2", V_88F6810_PLUS)),
+ };
+@@ -411,7 +402,7 @@ static struct mvebu_mpp_ctrl armada_38x_mpp_controls[] = {
+
+ static struct pinctrl_gpio_range armada_38x_mpp_gpio_ranges[] = {
+ MPP_GPIO_RANGE(0, 0, 0, 32),
+- MPP_GPIO_RANGE(1, 32, 32, 27),
++ MPP_GPIO_RANGE(1, 32, 32, 28),
+ };
+
+ static int armada_38x_pinctrl_probe(struct platform_device *pdev)
+diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-39x.c b/drivers/pinctrl/mvebu/pinctrl-armada-39x.c
+index 42491624d660..2dcf9b41e01e 100644
+--- a/drivers/pinctrl/mvebu/pinctrl-armada-39x.c
++++ b/drivers/pinctrl/mvebu/pinctrl-armada-39x.c
+@@ -380,7 +380,7 @@ static struct mvebu_mpp_ctrl armada_39x_mpp_controls[] = {
+
+ static struct pinctrl_gpio_range armada_39x_mpp_gpio_ranges[] = {
+ MPP_GPIO_RANGE(0, 0, 0, 32),
+- MPP_GPIO_RANGE(1, 32, 32, 27),
++ MPP_GPIO_RANGE(1, 32, 32, 28),
+ };
+
+ static int armada_39x_pinctrl_probe(struct platform_device *pdev)
+diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-xp.c b/drivers/pinctrl/mvebu/pinctrl-armada-xp.c
+index 578db9f033b2..d7cdb146f44d 100644
+--- a/drivers/pinctrl/mvebu/pinctrl-armada-xp.c
++++ b/drivers/pinctrl/mvebu/pinctrl-armada-xp.c
+@@ -14,10 +14,7 @@
+ * available: mv78230, mv78260 and mv78460. From a pin muxing
+ * perspective, the mv78230 has 49 MPP pins. The mv78260 and mv78460
+ * both have 67 MPP pins (more GPIOs and address lines for the memory
+- * bus mainly). The only difference between the mv78260 and the
+- * mv78460 in terms of pin muxing is the addition of two functions on
+- * pins 43 and 56 to access the VDD of the CPU2 and 3 (mv78260 has two
+- * cores, mv78460 has four cores).
++ * bus mainly).
+ */
+
+ #include <linux/err.h>
+@@ -172,20 +169,17 @@ static struct mvebu_mpp_mode armada_xp_mpp_modes[] = {
+ MPP_MODE(24,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "sata1", "prsnt", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x2, "nf", "bootcs-re", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x3, "tdm", "rst", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x4, "lcd", "hsync", V_MV78230_PLUS)),
+ MPP_MODE(25,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "sata0", "prsnt", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x2, "nf", "bootcs-we", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x3, "tdm", "pclk", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x4, "lcd", "vsync", V_MV78230_PLUS)),
+ MPP_MODE(26,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x3, "tdm", "fsync", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x4, "lcd", "clk", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x5, "vdd", "cpu1-pd", V_MV78230_PLUS)),
++ MPP_VAR_FUNCTION(0x4, "lcd", "clk", V_MV78230_PLUS)),
+ MPP_MODE(27,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "ptp", "trig", V_MV78230_PLUS),
+@@ -200,8 +194,7 @@ static struct mvebu_mpp_mode armada_xp_mpp_modes[] = {
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "ptp", "clk", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x3, "tdm", "int0", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x4, "lcd", "ref-clk", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x5, "vdd", "cpu0-pd", V_MV78230_PLUS)),
++ MPP_VAR_FUNCTION(0x4, "lcd", "ref-clk", V_MV78230_PLUS)),
+ MPP_MODE(30,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "sd0", "clk", V_MV78230_PLUS),
+@@ -209,13 +202,11 @@ static struct mvebu_mpp_mode armada_xp_mpp_modes[] = {
+ MPP_MODE(31,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "sd0", "cmd", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x3, "tdm", "int2", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x5, "vdd", "cpu0-pd", V_MV78230_PLUS)),
++ MPP_VAR_FUNCTION(0x3, "tdm", "int2", V_MV78230_PLUS)),
+ MPP_MODE(32,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "sd0", "d0", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x3, "tdm", "int3", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x5, "vdd", "cpu1-pd", V_MV78230_PLUS)),
++ MPP_VAR_FUNCTION(0x3, "tdm", "int3", V_MV78230_PLUS)),
+ MPP_MODE(33,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "sd0", "d1", V_MV78230_PLUS),
+@@ -247,7 +238,6 @@ static struct mvebu_mpp_mode armada_xp_mpp_modes[] = {
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "spi", "cs1", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x2, "uart2", "cts", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x3, "vdd", "cpu1-pd", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x4, "lcd", "vga-hsync", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x5, "pcie", "clkreq0", V_MV78230_PLUS)),
+ MPP_MODE(41,
+@@ -262,15 +252,13 @@ static struct mvebu_mpp_mode armada_xp_mpp_modes[] = {
+ MPP_VAR_FUNCTION(0x1, "uart2", "rxd", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x2, "uart0", "cts", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x3, "tdm", "int7", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x4, "tdm-1", "timer", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x5, "vdd", "cpu0-pd", V_MV78230_PLUS)),
++ MPP_VAR_FUNCTION(0x4, "tdm-1", "timer", V_MV78230_PLUS)),
+ MPP_MODE(43,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "uart2", "txd", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x2, "uart0", "rts", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x3, "spi", "cs3", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x4, "pcie", "rstout", V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x5, "vdd", "cpu2-3-pd", V_MV78460)),
++ MPP_VAR_FUNCTION(0x4, "pcie", "rstout", V_MV78230_PLUS)),
+ MPP_MODE(44,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x1, "uart2", "cts", V_MV78230_PLUS),
+@@ -299,7 +287,7 @@ static struct mvebu_mpp_mode armada_xp_mpp_modes[] = {
+ MPP_VAR_FUNCTION(0x5, "pcie", "clkreq3", V_MV78230_PLUS)),
+ MPP_MODE(48,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78230_PLUS),
+- MPP_VAR_FUNCTION(0x1, "tclk", NULL, V_MV78230_PLUS),
++ MPP_VAR_FUNCTION(0x1, "dev", "clkout", V_MV78230_PLUS),
+ MPP_VAR_FUNCTION(0x2, "dev", "burst/last", V_MV78230_PLUS)),
+ MPP_MODE(49,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78260_PLUS),
+@@ -321,16 +309,13 @@ static struct mvebu_mpp_mode armada_xp_mpp_modes[] = {
+ MPP_VAR_FUNCTION(0x1, "dev", "ad19", V_MV78260_PLUS)),
+ MPP_MODE(55,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78260_PLUS),
+- MPP_VAR_FUNCTION(0x1, "dev", "ad20", V_MV78260_PLUS),
+- MPP_VAR_FUNCTION(0x2, "vdd", "cpu0-pd", V_MV78260_PLUS)),
++ MPP_VAR_FUNCTION(0x1, "dev", "ad20", V_MV78260_PLUS)),
+ MPP_MODE(56,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78260_PLUS),
+- MPP_VAR_FUNCTION(0x1, "dev", "ad21", V_MV78260_PLUS),
+- MPP_VAR_FUNCTION(0x2, "vdd", "cpu1-pd", V_MV78260_PLUS)),
++ MPP_VAR_FUNCTION(0x1, "dev", "ad21", V_MV78260_PLUS)),
+ MPP_MODE(57,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78260_PLUS),
+- MPP_VAR_FUNCTION(0x1, "dev", "ad22", V_MV78260_PLUS),
+- MPP_VAR_FUNCTION(0x2, "vdd", "cpu2-3-pd", V_MV78460)),
++ MPP_VAR_FUNCTION(0x1, "dev", "ad22", V_MV78260_PLUS)),
+ MPP_MODE(58,
+ MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_MV78260_PLUS),
+ MPP_VAR_FUNCTION(0x1, "dev", "ad23", V_MV78260_PLUS)),
+diff --git a/drivers/pinctrl/pinctrl-zynq.c b/drivers/pinctrl/pinctrl-zynq.c
+index 22280bddb9e2..8c51a3c65513 100644
+--- a/drivers/pinctrl/pinctrl-zynq.c
++++ b/drivers/pinctrl/pinctrl-zynq.c
+@@ -714,12 +714,13 @@ static const char * const gpio0_groups[] = {"gpio0_0_grp",
+ .mux_val = mval, \
+ }
+
+-#define DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(fname, mval, mux, mask, shift) \
++#define DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(fname, mval, offset, mask, shift)\
+ [ZYNQ_PMUX_##fname] = { \
+ .name = #fname, \
+ .groups = fname##_groups, \
+ .ngroups = ARRAY_SIZE(fname##_groups), \
+ .mux_val = mval, \
++ .mux = offset, \
+ .mux_mask = mask, \
+ .mux_shift = shift, \
+ }
+@@ -744,15 +745,15 @@ static const struct zynq_pinmux_function zynq_pmux_functions[] = {
+ DEFINE_ZYNQ_PINMUX_FUNCTION(spi1, 0x50),
+ DEFINE_ZYNQ_PINMUX_FUNCTION(sdio0, 0x40),
+ DEFINE_ZYNQ_PINMUX_FUNCTION(sdio0_pc, 0xc),
+- DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio0_wp, 0, 130, ZYNQ_SDIO_WP_MASK,
++ DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio0_wp, 0, 0x130, ZYNQ_SDIO_WP_MASK,
+ ZYNQ_SDIO_WP_SHIFT),
+- DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio0_cd, 0, 130, ZYNQ_SDIO_CD_MASK,
++ DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio0_cd, 0, 0x130, ZYNQ_SDIO_CD_MASK,
+ ZYNQ_SDIO_CD_SHIFT),
+ DEFINE_ZYNQ_PINMUX_FUNCTION(sdio1, 0x40),
+ DEFINE_ZYNQ_PINMUX_FUNCTION(sdio1_pc, 0xc),
+- DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio1_wp, 0, 134, ZYNQ_SDIO_WP_MASK,
++ DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio1_wp, 0, 0x134, ZYNQ_SDIO_WP_MASK,
+ ZYNQ_SDIO_WP_SHIFT),
+- DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio1_cd, 0, 134, ZYNQ_SDIO_CD_MASK,
++ DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio1_cd, 0, 0x134, ZYNQ_SDIO_CD_MASK,
+ ZYNQ_SDIO_CD_SHIFT),
+ DEFINE_ZYNQ_PINMUX_FUNCTION(smc0_nor, 4),
+ DEFINE_ZYNQ_PINMUX_FUNCTION(smc0_nor_cs1, 8),
+diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
+index d688d806a8a5..2c1d5f5432a9 100644
+--- a/drivers/platform/x86/dell-laptop.c
++++ b/drivers/platform/x86/dell-laptop.c
+@@ -305,7 +305,6 @@ static const struct dmi_system_id dell_quirks[] __initconst = {
+ };
+
+ static struct calling_interface_buffer *buffer;
+-static struct page *bufferpage;
+ static DEFINE_MUTEX(buffer_mutex);
+
+ static int hwswitch_state;
+@@ -1896,12 +1895,11 @@ static int __init dell_init(void)
+ * Allocate buffer below 4GB for SMI data--only 32-bit physical addr
+ * is passed to SMI handler.
+ */
+- bufferpage = alloc_page(GFP_KERNEL | GFP_DMA32);
+- if (!bufferpage) {
++ buffer = (void *)__get_free_page(GFP_KERNEL | GFP_DMA32);
++ if (!buffer) {
+ ret = -ENOMEM;
+ goto fail_buffer;
+ }
+- buffer = page_address(bufferpage);
+
+ ret = dell_setup_rfkill();
+
+@@ -1965,7 +1963,7 @@ fail_backlight:
+ cancel_delayed_work_sync(&dell_rfkill_work);
+ dell_cleanup_rfkill();
+ fail_rfkill:
+- free_page((unsigned long)bufferpage);
++ free_page((unsigned long)buffer);
+ fail_buffer:
+ platform_device_del(platform_device);
+ fail_platform_device2:
+diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
+index b496db87bc05..cb7cd8d79329 100644
+--- a/drivers/platform/x86/ideapad-laptop.c
++++ b/drivers/platform/x86/ideapad-laptop.c
+@@ -464,8 +464,9 @@ static const struct ideapad_rfk_data ideapad_rfk_data[] = {
+ static int ideapad_rfk_set(void *data, bool blocked)
+ {
+ struct ideapad_rfk_priv *priv = data;
++ int opcode = ideapad_rfk_data[priv->dev].opcode;
+
+- return write_ec_cmd(priv->priv->adev->handle, priv->dev, !blocked);
++ return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
+ }
+
+ static struct rfkill_ops ideapad_rfk_ops = {
+@@ -837,6 +838,13 @@ static const struct dmi_system_id no_hw_rfkill_list[] = {
+ },
+ },
+ {
++ .ident = "Lenovo G50-30",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"),
++ },
++ },
++ {
+ .ident = "Lenovo Yoga 2 11 / 13 / Pro",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
+index 515f33882ab8..49c1720df59a 100644
+--- a/drivers/pnp/system.c
++++ b/drivers/pnp/system.c
+@@ -7,7 +7,6 @@
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ */
+
+-#include <linux/acpi.h>
+ #include <linux/pnp.h>
+ #include <linux/device.h>
+ #include <linux/init.h>
+@@ -23,41 +22,25 @@ static const struct pnp_device_id pnp_dev_table[] = {
+ {"", 0}
+ };
+
+-#ifdef CONFIG_ACPI
+-static bool __reserve_range(u64 start, unsigned int length, bool io, char *desc)
+-{
+- u8 space_id = io ? ACPI_ADR_SPACE_SYSTEM_IO : ACPI_ADR_SPACE_SYSTEM_MEMORY;
+- return !acpi_reserve_region(start, length, space_id, IORESOURCE_BUSY, desc);
+-}
+-#else
+-static bool __reserve_range(u64 start, unsigned int length, bool io, char *desc)
+-{
+- struct resource *res;
+-
+- res = io ? request_region(start, length, desc) :
+- request_mem_region(start, length, desc);
+- if (res) {
+- res->flags &= ~IORESOURCE_BUSY;
+- return true;
+- }
+- return false;
+-}
+-#endif
+-
+ static void reserve_range(struct pnp_dev *dev, struct resource *r, int port)
+ {
+ char *regionid;
+ const char *pnpid = dev_name(&dev->dev);
+ resource_size_t start = r->start, end = r->end;
+- bool reserved;
++ struct resource *res;
+
+ regionid = kmalloc(16, GFP_KERNEL);
+ if (!regionid)
+ return;
+
+ snprintf(regionid, 16, "pnp %s", pnpid);
+- reserved = __reserve_range(start, end - start + 1, !!port, regionid);
+- if (!reserved)
++ if (port)
++ res = request_region(start, end - start + 1, regionid);
++ else
++ res = request_mem_region(start, end - start + 1, regionid);
++ if (res)
++ res->flags &= ~IORESOURCE_BUSY;
++ else
+ kfree(regionid);
+
+ /*
+@@ -66,7 +49,7 @@ static void reserve_range(struct pnp_dev *dev, struct resource *r, int port)
+ * have double reservations.
+ */
+ dev_info(&dev->dev, "%pR %s reserved\n", r,
+- reserved ? "has been" : "could not be");
++ res ? "has been" : "could not be");
+ }
+
+ static void reserve_resources_of_dev(struct pnp_dev *dev)
+diff --git a/drivers/rtc/rtc-snvs.c b/drivers/rtc/rtc-snvs.c
+index 0479e807a776..d87a85cefb66 100644
+--- a/drivers/rtc/rtc-snvs.c
++++ b/drivers/rtc/rtc-snvs.c
+@@ -322,6 +322,13 @@ static int snvs_rtc_suspend(struct device *dev)
+ if (device_may_wakeup(dev))
+ enable_irq_wake(data->irq);
+
++ return 0;
++}
++
++static int snvs_rtc_suspend_noirq(struct device *dev)
++{
++ struct snvs_rtc_data *data = dev_get_drvdata(dev);
++
+ if (data->clk)
+ clk_disable_unprepare(data->clk);
+
+@@ -331,23 +338,28 @@ static int snvs_rtc_suspend(struct device *dev)
+ static int snvs_rtc_resume(struct device *dev)
+ {
+ struct snvs_rtc_data *data = dev_get_drvdata(dev);
+- int ret;
+
+ if (device_may_wakeup(dev))
+- disable_irq_wake(data->irq);
++ return disable_irq_wake(data->irq);
+
+- if (data->clk) {
+- ret = clk_prepare_enable(data->clk);
+- if (ret)
+- return ret;
+- }
++ return 0;
++}
++
++static int snvs_rtc_resume_noirq(struct device *dev)
++{
++ struct snvs_rtc_data *data = dev_get_drvdata(dev);
++
++ if (data->clk)
++ return clk_prepare_enable(data->clk);
+
+ return 0;
+ }
+
+ static const struct dev_pm_ops snvs_rtc_pm_ops = {
+- .suspend_noirq = snvs_rtc_suspend,
+- .resume_noirq = snvs_rtc_resume,
++ .suspend = snvs_rtc_suspend,
++ .suspend_noirq = snvs_rtc_suspend_noirq,
++ .resume = snvs_rtc_resume,
++ .resume_noirq = snvs_rtc_resume_noirq,
+ };
+
+ #define SNVS_RTC_PM_OPS (&snvs_rtc_pm_ops)
+diff --git a/drivers/staging/comedi/drivers/cb_pcimdas.c b/drivers/staging/comedi/drivers/cb_pcimdas.c
+index c458e5010a74..4ebf5aae5019 100644
+--- a/drivers/staging/comedi/drivers/cb_pcimdas.c
++++ b/drivers/staging/comedi/drivers/cb_pcimdas.c
+@@ -243,7 +243,7 @@ static int cb_pcimdas_ao_insn_write(struct comedi_device *dev,
+ return insn->n;
+ }
+
+-static int cb_pcimdas_di_insn_read(struct comedi_device *dev,
++static int cb_pcimdas_di_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+@@ -258,7 +258,7 @@ static int cb_pcimdas_di_insn_read(struct comedi_device *dev,
+ return insn->n;
+ }
+
+-static int cb_pcimdas_do_insn_write(struct comedi_device *dev,
++static int cb_pcimdas_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+@@ -424,7 +424,7 @@ static int cb_pcimdas_auto_attach(struct comedi_device *dev,
+ s->n_chan = 4;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+- s->insn_read = cb_pcimdas_di_insn_read;
++ s->insn_bits = cb_pcimdas_di_insn_bits;
+
+ /* Digital Output subdevice (main connector) */
+ s = &dev->subdevices[4];
+@@ -433,7 +433,7 @@ static int cb_pcimdas_auto_attach(struct comedi_device *dev,
+ s->n_chan = 4;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+- s->insn_write = cb_pcimdas_do_insn_write;
++ s->insn_bits = cb_pcimdas_do_insn_bits;
+
+ /* Counter subdevice (8254) */
+ s = &dev->subdevices[5];
+diff --git a/drivers/staging/rtl8712/rtl8712_recv.c b/drivers/staging/rtl8712/rtl8712_recv.c
+index 50227b598e0c..fcb8c61b2884 100644
+--- a/drivers/staging/rtl8712/rtl8712_recv.c
++++ b/drivers/staging/rtl8712/rtl8712_recv.c
+@@ -1056,7 +1056,8 @@ static int recvbuf2recvframe(struct _adapter *padapter, struct sk_buff *pskb)
+ /* for first fragment packet, driver need allocate 1536 +
+ * drvinfo_sz + RXDESC_SIZE to defrag packet. */
+ if ((mf == 1) && (frag == 0))
+- alloc_sz = 1658;/*1658+6=1664, 1664 is 128 alignment.*/
++ /*1658+6=1664, 1664 is 128 alignment.*/
++ alloc_sz = max_t(u16, tmp_len, 1658);
+ else
+ alloc_sz = tmp_len;
+ /* 2 is for IP header 4 bytes alignment in QoS packet case.
+diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
+index 0343ae386f03..15baacb126ad 100644
+--- a/drivers/staging/vt6655/device_main.c
++++ b/drivers/staging/vt6655/device_main.c
+@@ -807,6 +807,10 @@ static int device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx)
+ pRD = pRD->next) {
+ if (works++ > 15)
+ break;
++
++ if (!pRD->pRDInfo->skb)
++ break;
++
+ if (vnt_receive_frame(pDevice, pRD)) {
+ if (!device_alloc_rx_buf(pDevice, pRD)) {
+ dev_err(&pDevice->pcid->dev,
+@@ -1417,7 +1421,7 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
+
+ priv->current_aid = conf->aid;
+
+- if (changed & BSS_CHANGED_BSSID) {
++ if (changed & BSS_CHANGED_BSSID && conf->bssid) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
+index ab3ab84cb0a7..766fdcece074 100644
+--- a/drivers/staging/vt6656/main_usb.c
++++ b/drivers/staging/vt6656/main_usb.c
+@@ -701,7 +701,7 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
+
+ priv->current_aid = conf->aid;
+
+- if (changed & BSS_CHANGED_BSSID)
++ if (changed & BSS_CHANGED_BSSID && conf->bssid)
+ vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
+
+
+diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
+index f8120c1bde14..8cd35348fc19 100644
+--- a/drivers/tty/serial/Kconfig
++++ b/drivers/tty/serial/Kconfig
+@@ -241,7 +241,6 @@ config SERIAL_SAMSUNG
+ tristate "Samsung SoC serial support"
+ depends on PLAT_SAMSUNG || ARCH_EXYNOS
+ select SERIAL_CORE
+- select SERIAL_EARLYCON
+ help
+ Support for the on-chip UARTs on the Samsung S3C24XX series CPUs,
+ providing /dev/ttySAC0, 1 and 2 (note, some machines may not
+@@ -277,6 +276,7 @@ config SERIAL_SAMSUNG_CONSOLE
+ bool "Support for console on Samsung SoC serial port"
+ depends on SERIAL_SAMSUNG=y
+ select SERIAL_CORE_CONSOLE
++ select SERIAL_EARLYCON
+ help
+ Allow selection of the S3C24XX on-board serial ports for use as
+ an virtual console.
+diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
+index 27dade29646b..5ca1dfb0561c 100644
+--- a/drivers/tty/serial/atmel_serial.c
++++ b/drivers/tty/serial/atmel_serial.c
+@@ -315,8 +315,7 @@ static int atmel_config_rs485(struct uart_port *port,
+ if (rs485conf->flags & SER_RS485_ENABLED) {
+ dev_dbg(port->dev, "Setting UART to RS485\n");
+ atmel_port->tx_done_mask = ATMEL_US_TXEMPTY;
+- if ((rs485conf->delay_rts_after_send) > 0)
+- UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
++ UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
+ mode |= ATMEL_US_USMODE_RS485;
+ } else {
+ dev_dbg(port->dev, "Setting UART to RS232\n");
+@@ -354,8 +353,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
+
+ /* override mode to RS485 if needed, otherwise keep the current mode */
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+- if ((port->rs485.delay_rts_after_send) > 0)
+- UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
++ UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
+ mode &= ~ATMEL_US_USMODE;
+ mode |= ATMEL_US_USMODE_RS485;
+ }
+@@ -2061,8 +2059,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
+
+ /* mode */
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+- if ((port->rs485.delay_rts_after_send) > 0)
+- UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
++ UART_PUT_TTGR(port, port->rs485.delay_rts_after_send);
+ mode |= ATMEL_US_USMODE_RS485;
+ } else if (termios->c_cflag & CRTSCTS) {
+ /* RS232 with hardware handshake (RTS/CTS) */
+diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
+index 843f2cdc280b..9ffdfcf2ec6e 100644
+--- a/drivers/tty/sysrq.c
++++ b/drivers/tty/sysrq.c
+@@ -55,9 +55,6 @@
+ static int __read_mostly sysrq_enabled = CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE;
+ static bool __read_mostly sysrq_always_enabled;
+
+-unsigned short platform_sysrq_reset_seq[] __weak = { KEY_RESERVED };
+-int sysrq_reset_downtime_ms __weak;
+-
+ static bool sysrq_on(void)
+ {
+ return sysrq_enabled || sysrq_always_enabled;
+@@ -569,6 +566,7 @@ void handle_sysrq(int key)
+ EXPORT_SYMBOL(handle_sysrq);
+
+ #ifdef CONFIG_INPUT
++static int sysrq_reset_downtime_ms;
+
+ /* Simple translation table for the SysRq keys */
+ static const unsigned char sysrq_xlate[KEY_CNT] =
+@@ -949,23 +947,8 @@ static bool sysrq_handler_registered;
+
+ static inline void sysrq_register_handler(void)
+ {
+- unsigned short key;
+ int error;
+- int i;
+-
+- /* First check if a __weak interface was instantiated. */
+- for (i = 0; i < ARRAY_SIZE(sysrq_reset_seq); i++) {
+- key = platform_sysrq_reset_seq[i];
+- if (key == KEY_RESERVED || key > KEY_MAX)
+- break;
+-
+- sysrq_reset_seq[sysrq_reset_seq_len++] = key;
+- }
+
+- /*
+- * DT configuration takes precedence over anything that would
+- * have been defined via the __weak interface.
+- */
+ sysrq_of_get_keyreset_config();
+
+ error = input_register_handler(&sysrq_handler);
+diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
+index 4b0448c26810..986abde07683 100644
+--- a/drivers/usb/core/devio.c
++++ b/drivers/usb/core/devio.c
+@@ -513,7 +513,7 @@ static void async_completed(struct urb *urb)
+ snoop(&urb->dev->dev, "urb complete\n");
+ snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
+ as->status, COMPLETE, NULL, 0);
+- if ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_IN)
++ if ((urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN)
+ snoop_urb_data(urb, urb->actual_length);
+
+ if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&
+diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
+index 45a915ccd71c..1c1385e3a824 100644
+--- a/drivers/usb/core/hcd.c
++++ b/drivers/usb/core/hcd.c
+@@ -1022,9 +1022,12 @@ static int register_root_hub(struct usb_hcd *hcd)
+ dev_name(&usb_dev->dev), retval);
+ return (retval < 0) ? retval : -EMSGSIZE;
+ }
+- if (usb_dev->speed == USB_SPEED_SUPER) {
++
++ if (le16_to_cpu(usb_dev->descriptor.bcdUSB) >= 0x0201) {
+ retval = usb_get_bos_descriptor(usb_dev);
+- if (retval < 0) {
++ if (!retval) {
++ usb_dev->lpm_capable = usb_device_supports_lpm(usb_dev);
++ } else if (usb_dev->speed == USB_SPEED_SUPER) {
+ mutex_unlock(&usb_bus_list_lock);
+ dev_dbg(parent_dev, "can't read %s bos descriptor %d\n",
+ dev_name(&usb_dev->dev), retval);
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index 3b7151687776..1e9a8c9aa531 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -122,7 +122,7 @@ struct usb_hub *usb_hub_to_struct_hub(struct usb_device *hdev)
+ return usb_get_intfdata(hdev->actconfig->interface[0]);
+ }
+
+-static int usb_device_supports_lpm(struct usb_device *udev)
++int usb_device_supports_lpm(struct usb_device *udev)
+ {
+ /* USB 2.1 (and greater) devices indicate LPM support through
+ * their USB 2.0 Extended Capabilities BOS descriptor.
+@@ -2616,9 +2616,6 @@ static bool use_new_scheme(struct usb_device *udev, int retry)
+ return USE_NEW_SCHEME(retry);
+ }
+
+-static int hub_port_reset(struct usb_hub *hub, int port1,
+- struct usb_device *udev, unsigned int delay, bool warm);
+-
+ /* Is a USB 3.0 port in the Inactive or Compliance Mode state?
+ * Port worm reset is required to recover
+ */
+@@ -2706,44 +2703,6 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
+ return 0;
+ }
+
+-static void hub_port_finish_reset(struct usb_hub *hub, int port1,
+- struct usb_device *udev, int *status)
+-{
+- switch (*status) {
+- case 0:
+- /* TRSTRCY = 10 ms; plus some extra */
+- msleep(10 + 40);
+- if (udev) {
+- struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+-
+- update_devnum(udev, 0);
+- /* The xHC may think the device is already reset,
+- * so ignore the status.
+- */
+- if (hcd->driver->reset_device)
+- hcd->driver->reset_device(hcd, udev);
+- }
+- /* FALL THROUGH */
+- case -ENOTCONN:
+- case -ENODEV:
+- usb_clear_port_feature(hub->hdev,
+- port1, USB_PORT_FEAT_C_RESET);
+- if (hub_is_superspeed(hub->hdev)) {
+- usb_clear_port_feature(hub->hdev, port1,
+- USB_PORT_FEAT_C_BH_PORT_RESET);
+- usb_clear_port_feature(hub->hdev, port1,
+- USB_PORT_FEAT_C_PORT_LINK_STATE);
+- usb_clear_port_feature(hub->hdev, port1,
+- USB_PORT_FEAT_C_CONNECTION);
+- }
+- if (udev)
+- usb_set_device_state(udev, *status
+- ? USB_STATE_NOTATTACHED
+- : USB_STATE_DEFAULT);
+- break;
+- }
+-}
+-
+ /* Handle port reset and port warm(BH) reset (for USB3 protocol ports) */
+ static int hub_port_reset(struct usb_hub *hub, int port1,
+ struct usb_device *udev, unsigned int delay, bool warm)
+@@ -2767,13 +2726,10 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
+ * If the caller hasn't explicitly requested a warm reset,
+ * double check and see if one is needed.
+ */
+- status = hub_port_status(hub, port1,
+- &portstatus, &portchange);
+- if (status < 0)
+- goto done;
+-
+- if (hub_port_warm_reset_required(hub, port1, portstatus))
+- warm = true;
++ if (hub_port_status(hub, port1, &portstatus, &portchange) == 0)
++ if (hub_port_warm_reset_required(hub, port1,
++ portstatus))
++ warm = true;
+ }
+ clear_bit(port1, hub->warm_reset_bits);
+
+@@ -2799,11 +2755,19 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
+
+ /* Check for disconnect or reset */
+ if (status == 0 || status == -ENOTCONN || status == -ENODEV) {
+- hub_port_finish_reset(hub, port1, udev, &status);
++ usb_clear_port_feature(hub->hdev, port1,
++ USB_PORT_FEAT_C_RESET);
+
+ if (!hub_is_superspeed(hub->hdev))
+ goto done;
+
++ usb_clear_port_feature(hub->hdev, port1,
++ USB_PORT_FEAT_C_BH_PORT_RESET);
++ usb_clear_port_feature(hub->hdev, port1,
++ USB_PORT_FEAT_C_PORT_LINK_STATE);
++ usb_clear_port_feature(hub->hdev, port1,
++ USB_PORT_FEAT_C_CONNECTION);
++
+ /*
+ * If a USB 3.0 device migrates from reset to an error
+ * state, re-issue the warm reset.
+@@ -2836,6 +2800,26 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
+ dev_err(&port_dev->dev, "Cannot enable. Maybe the USB cable is bad?\n");
+
+ done:
++ if (status == 0) {
++ /* TRSTRCY = 10 ms; plus some extra */
++ msleep(10 + 40);
++ if (udev) {
++ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
++
++ update_devnum(udev, 0);
++ /* The xHC may think the device is already reset,
++ * so ignore the status.
++ */
++ if (hcd->driver->reset_device)
++ hcd->driver->reset_device(hcd, udev);
++
++ usb_set_device_state(udev, USB_STATE_DEFAULT);
++ }
++ } else {
++ if (udev)
++ usb_set_device_state(udev, USB_STATE_NOTATTACHED);
++ }
++
+ if (!hub_is_superspeed(hub->hdev))
+ up_read(&ehci_cf_port_reset_rwsem);
+
+diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
+index 7eb1e26798e5..457255a3306a 100644
+--- a/drivers/usb/core/usb.h
++++ b/drivers/usb/core/usb.h
+@@ -65,6 +65,7 @@ extern int usb_hub_init(void);
+ extern void usb_hub_cleanup(void);
+ extern int usb_major_init(void);
+ extern void usb_major_cleanup(void);
++extern int usb_device_supports_lpm(struct usb_device *udev);
+
+ #ifdef CONFIG_PM
+
+diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
+index 2ef3c8d6a9db..69e769c35cf5 100644
+--- a/drivers/usb/dwc3/ep0.c
++++ b/drivers/usb/dwc3/ep0.c
+@@ -727,6 +727,10 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ISOCH_DELAY");
+ ret = dwc3_ep0_set_isoch_delay(dwc, ctrl);
+ break;
++ case USB_REQ_SET_INTERFACE:
++ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_INTERFACE");
++ dwc->start_config_issued = false;
++ /* Fall through */
+ default:
+ dwc3_trace(trace_dwc3_ep0, "Forwarding to gadget driver");
+ ret = dwc3_ep0_delegate_req(dwc, ctrl);
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index 8946c32047e9..333a7c0078fc 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -291,6 +291,8 @@ int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param)
+ dwc3_trace(trace_dwc3_gadget,
+ "Command Complete --> %d",
+ DWC3_DGCMD_STATUS(reg));
++ if (DWC3_DGCMD_STATUS(reg))
++ return -EINVAL;
+ return 0;
+ }
+
+@@ -328,6 +330,8 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
+ dwc3_trace(trace_dwc3_gadget,
+ "Command Complete --> %d",
+ DWC3_DEPCMD_STATUS(reg));
++ if (DWC3_DEPCMD_STATUS(reg))
++ return -EINVAL;
+ return 0;
+ }
+
+@@ -1902,12 +1906,16 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
+ {
+ unsigned status = 0;
+ int clean_busy;
++ u32 is_xfer_complete;
++
++ is_xfer_complete = (event->endpoint_event == DWC3_DEPEVT_XFERCOMPLETE);
+
+ if (event->status & DEPEVT_STATUS_BUSERR)
+ status = -ECONNRESET;
+
+ clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status);
+- if (clean_busy)
++ if (clean_busy && (is_xfer_complete ||
++ usb_endpoint_xfer_isoc(dep->endpoint.desc)))
+ dep->flags &= ~DWC3_EP_BUSY;
+
+ /*
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index 4e3447bbd097..58b4657fc721 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -1758,10 +1758,13 @@ unknown:
+ * take such requests too, if that's ever needed: to work
+ * in config 0, etc.
+ */
+- list_for_each_entry(f, &cdev->config->functions, list)
+- if (f->req_match && f->req_match(f, ctrl))
+- goto try_fun_setup;
+- f = NULL;
++ if (cdev->config) {
++ list_for_each_entry(f, &cdev->config->functions, list)
++ if (f->req_match && f->req_match(f, ctrl))
++ goto try_fun_setup;
++ f = NULL;
++ }
++
+ switch (ctrl->bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_INTERFACE:
+ if (!cdev->config || intf >= MAX_CONFIG_INTERFACES)
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 45b8c8b338df..6e7be91e6097 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -924,7 +924,8 @@ static ssize_t ffs_epfile_write_iter(struct kiocb *kiocb, struct iov_iter *from)
+
+ kiocb->private = p;
+
+- kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
++ if (p->aio)
++ kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
+
+ res = ffs_epfile_io(kiocb->ki_filp, p);
+ if (res == -EIOCBQUEUED)
+@@ -968,7 +969,8 @@ static ssize_t ffs_epfile_read_iter(struct kiocb *kiocb, struct iov_iter *to)
+
+ kiocb->private = p;
+
+- kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
++ if (p->aio)
++ kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
+
+ res = ffs_epfile_io(kiocb->ki_filp, p);
+ if (res == -EIOCBQUEUED)
+diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
+index 3cc109f3c9c8..15c307155037 100644
+--- a/drivers/usb/gadget/function/f_mass_storage.c
++++ b/drivers/usb/gadget/function/f_mass_storage.c
+@@ -2786,7 +2786,7 @@ int fsg_common_set_nluns(struct fsg_common *common, int nluns)
+ return -EINVAL;
+ }
+
+- curlun = kcalloc(nluns, sizeof(*curlun), GFP_KERNEL);
++ curlun = kcalloc(FSG_MAX_LUNS, sizeof(*curlun), GFP_KERNEL);
+ if (unlikely(!curlun))
+ return -ENOMEM;
+
+@@ -2796,8 +2796,6 @@ int fsg_common_set_nluns(struct fsg_common *common, int nluns)
+ common->luns = curlun;
+ common->nluns = nluns;
+
+- pr_info("Number of LUNs=%d\n", common->nluns);
+-
+ return 0;
+ }
+ EXPORT_SYMBOL_GPL(fsg_common_set_nluns);
+@@ -3563,14 +3561,26 @@ static struct usb_function *fsg_alloc(struct usb_function_instance *fi)
+ struct fsg_opts *opts = fsg_opts_from_func_inst(fi);
+ struct fsg_common *common = opts->common;
+ struct fsg_dev *fsg;
++ unsigned nluns, i;
+
+ fsg = kzalloc(sizeof(*fsg), GFP_KERNEL);
+ if (unlikely(!fsg))
+ return ERR_PTR(-ENOMEM);
+
+ mutex_lock(&opts->lock);
++ if (!opts->refcnt) {
++ for (nluns = i = 0; i < FSG_MAX_LUNS; ++i)
++ if (common->luns[i])
++ nluns = i + 1;
++ if (!nluns)
++ pr_warn("No LUNS defined, continuing anyway\n");
++ else
++ common->nluns = nluns;
++ pr_info("Number of LUNs=%u\n", common->nluns);
++ }
+ opts->refcnt++;
+ mutex_unlock(&opts->lock);
++
+ fsg->function.name = FSG_DRIVER_DESC;
+ fsg->function.bind = fsg_bind;
+ fsg->function.unbind = fsg_unbind;
+diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c
+index d32160d6463f..5da37c957b53 100644
+--- a/drivers/usb/gadget/udc/mv_udc_core.c
++++ b/drivers/usb/gadget/udc/mv_udc_core.c
+@@ -2167,7 +2167,7 @@ static int mv_udc_probe(struct platform_device *pdev)
+ return -ENODEV;
+ }
+
+- udc->phy_regs = ioremap(r->start, resource_size(r));
++ udc->phy_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r));
+ if (udc->phy_regs == NULL) {
+ dev_err(&pdev->dev, "failed to map phy I/O memory\n");
+ return -EBUSY;
+diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
+index 1463c398d322..fe1d5fc7da2d 100644
+--- a/drivers/usb/host/ohci-q.c
++++ b/drivers/usb/host/ohci-q.c
+@@ -980,10 +980,6 @@ rescan_all:
+ int completed, modified;
+ __hc32 *prev;
+
+- /* Is this ED already invisible to the hardware? */
+- if (ed->state == ED_IDLE)
+- goto ed_idle;
+-
+ /* only take off EDs that the HC isn't using, accounting for
+ * frame counter wraps and EDs with partially retired TDs
+ */
+@@ -1011,12 +1007,10 @@ skip_ed:
+ }
+
+ /* ED's now officially unlinked, hc doesn't see */
+- ed->state = ED_IDLE;
+ ed->hwHeadP &= ~cpu_to_hc32(ohci, ED_H);
+ ed->hwNextED = 0;
+ wmb();
+ ed->hwINFO &= ~cpu_to_hc32(ohci, ED_SKIP | ED_DEQUEUE);
+-ed_idle:
+
+ /* reentrancy: if we drop the schedule lock, someone might
+ * have modified this list. normally it's just prepending
+@@ -1087,6 +1081,7 @@ rescan_this:
+ if (list_empty(&ed->td_list)) {
+ *last = ed->ed_next;
+ ed->ed_next = NULL;
++ ed->state = ED_IDLE;
+ list_del(&ed->in_use_list);
+ } else if (ohci->rh_state == OHCI_RH_RUNNING) {
+ *last = ed->ed_next;
+diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
+index f8336408ef07..3e442f77a2b9 100644
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -1427,10 +1427,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
+ /* Attempt to use the ring cache */
+ if (virt_dev->num_rings_cached == 0)
+ return -ENOMEM;
++ virt_dev->num_rings_cached--;
+ virt_dev->eps[ep_index].new_ring =
+ virt_dev->ring_cache[virt_dev->num_rings_cached];
+ virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;
+- virt_dev->num_rings_cached--;
+ xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring,
+ 1, type);
+ }
+diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c
+index 86c4b533e90b..4731baca377f 100644
+--- a/drivers/usb/musb/musb_virthub.c
++++ b/drivers/usb/musb/musb_virthub.c
+@@ -273,9 +273,7 @@ static int musb_has_gadget(struct musb *musb)
+ #ifdef CONFIG_USB_MUSB_HOST
+ return 1;
+ #else
+- if (musb->port_mode == MUSB_PORT_MODE_HOST)
+- return 1;
+- return musb->g.dev.driver != NULL;
++ return musb->port_mode == MUSB_PORT_MODE_HOST;
+ #endif
+ }
+
+diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
+index 8f7cb068d29b..3fcc0483a081 100644
+--- a/drivers/usb/phy/phy-mxs-usb.c
++++ b/drivers/usb/phy/phy-mxs-usb.c
+@@ -217,6 +217,9 @@ static bool mxs_phy_get_vbus_status(struct mxs_phy *mxs_phy)
+ {
+ unsigned int vbus_value;
+
++ if (!mxs_phy->regmap_anatop)
++ return false;
++
+ if (mxs_phy->port_id == 0)
+ regmap_read(mxs_phy->regmap_anatop,
+ ANADIG_USB1_VBUS_DET_STAT,
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index ffd739e31bfc..eac7ccaa3c85 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -187,6 +187,7 @@ static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */
+ { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */
+ { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */
++ { USB_DEVICE(0x2626, 0xEA60) }, /* Aruba Networks 7xxx USB Serial Console */
+ { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */
+ { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */
+ { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index f0c0c53359ad..19b85ee98a72 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -1765,6 +1765,7 @@ static const struct usb_device_id option_ids[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x00, 0x00) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */
++ { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) }, /* OLICARD300 - MT6225 */
+ { USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) },
+ { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) },
+ { } /* Terminating entry */
+diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
+index 529066bbc7e8..46f1f13b41f1 100644
+--- a/drivers/usb/serial/usb-serial.c
++++ b/drivers/usb/serial/usb-serial.c
+@@ -1306,6 +1306,7 @@ static void __exit usb_serial_exit(void)
+ tty_unregister_driver(usb_serial_tty_driver);
+ put_tty_driver(usb_serial_tty_driver);
+ bus_unregister(&usb_serial_bus_type);
++ idr_destroy(&serial_minors);
+ }
+
+
+diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
+index 1f11a20a8ab9..55eb86c9e214 100644
+--- a/drivers/w1/slaves/w1_therm.c
++++ b/drivers/w1/slaves/w1_therm.c
+@@ -59,16 +59,32 @@ MODULE_ALIAS("w1-family-" __stringify(W1_THERM_DS28EA00));
+ static int w1_strong_pullup = 1;
+ module_param_named(strong_pullup, w1_strong_pullup, int, 0);
+
++struct w1_therm_family_data {
++ uint8_t rom[9];
++ atomic_t refcnt;
++};
++
++/* return the address of the refcnt in the family data */
++#define THERM_REFCNT(family_data) \
++ (&((struct w1_therm_family_data*)family_data)->refcnt)
++
+ static int w1_therm_add_slave(struct w1_slave *sl)
+ {
+- sl->family_data = kzalloc(9, GFP_KERNEL);
++ sl->family_data = kzalloc(sizeof(struct w1_therm_family_data),
++ GFP_KERNEL);
+ if (!sl->family_data)
+ return -ENOMEM;
++ atomic_set(THERM_REFCNT(sl->family_data), 1);
+ return 0;
+ }
+
+ static void w1_therm_remove_slave(struct w1_slave *sl)
+ {
++ int refcnt = atomic_sub_return(1, THERM_REFCNT(sl->family_data));
++ while(refcnt) {
++ msleep(1000);
++ refcnt = atomic_read(THERM_REFCNT(sl->family_data));
++ }
+ kfree(sl->family_data);
+ sl->family_data = NULL;
+ }
+@@ -194,13 +210,22 @@ static ssize_t w1_slave_show(struct device *device,
+ struct w1_slave *sl = dev_to_w1_slave(device);
+ struct w1_master *dev = sl->master;
+ u8 rom[9], crc, verdict, external_power;
+- int i, max_trying = 10;
++ int i, ret, max_trying = 10;
+ ssize_t c = PAGE_SIZE;
++ u8 *family_data = sl->family_data;
++
++ ret = mutex_lock_interruptible(&dev->bus_mutex);
++ if (ret != 0)
++ goto post_unlock;
+
+- i = mutex_lock_interruptible(&dev->bus_mutex);
+- if (i != 0)
+- return i;
++ if(!sl->family_data)
++ {
++ ret = -ENODEV;
++ goto pre_unlock;
++ }
+
++ /* prevent the slave from going away in sleep */
++ atomic_inc(THERM_REFCNT(family_data));
+ memset(rom, 0, sizeof(rom));
+
+ while (max_trying--) {
+@@ -230,17 +255,19 @@ static ssize_t w1_slave_show(struct device *device,
+ mutex_unlock(&dev->bus_mutex);
+
+ sleep_rem = msleep_interruptible(tm);
+- if (sleep_rem != 0)
+- return -EINTR;
++ if (sleep_rem != 0) {
++ ret = -EINTR;
++ goto post_unlock;
++ }
+
+- i = mutex_lock_interruptible(&dev->bus_mutex);
+- if (i != 0)
+- return i;
++ ret = mutex_lock_interruptible(&dev->bus_mutex);
++ if (ret != 0)
++ goto post_unlock;
+ } else if (!w1_strong_pullup) {
+ sleep_rem = msleep_interruptible(tm);
+ if (sleep_rem != 0) {
+- mutex_unlock(&dev->bus_mutex);
+- return -EINTR;
++ ret = -EINTR;
++ goto pre_unlock;
+ }
+ }
+
+@@ -269,19 +296,24 @@ static ssize_t w1_slave_show(struct device *device,
+ c -= snprintf(buf + PAGE_SIZE - c, c, ": crc=%02x %s\n",
+ crc, (verdict) ? "YES" : "NO");
+ if (verdict)
+- memcpy(sl->family_data, rom, sizeof(rom));
++ memcpy(family_data, rom, sizeof(rom));
+ else
+ dev_warn(device, "Read failed CRC check\n");
+
+ for (i = 0; i < 9; ++i)
+ c -= snprintf(buf + PAGE_SIZE - c, c, "%02x ",
+- ((u8 *)sl->family_data)[i]);
++ ((u8 *)family_data)[i]);
+
+ c -= snprintf(buf + PAGE_SIZE - c, c, "t=%d\n",
+ w1_convert_temp(rom, sl->family->fid));
++ ret = PAGE_SIZE - c;
++
++pre_unlock:
+ mutex_unlock(&dev->bus_mutex);
+
+- return PAGE_SIZE - c;
++post_unlock:
++ atomic_dec(THERM_REFCNT(family_data));
++ return ret;
+ }
+
+ static int __init w1_therm_init(void)
+diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
+index 1e6be9e40577..c9c97dacf452 100644
+--- a/drivers/watchdog/omap_wdt.c
++++ b/drivers/watchdog/omap_wdt.c
+@@ -132,6 +132,13 @@ static int omap_wdt_start(struct watchdog_device *wdog)
+
+ pm_runtime_get_sync(wdev->dev);
+
++ /*
++ * Make sure the watchdog is disabled. This is unfortunately required
++ * because writing to various registers with the watchdog running has no
++ * effect.
++ */
++ omap_wdt_disable(wdev);
++
+ /* initialize prescaler */
+ while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x01)
+ cpu_relax();
+diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
+index 703342e309f5..53f1e8a21707 100644
+--- a/fs/9p/vfs_inode.c
++++ b/fs/9p/vfs_inode.c
+@@ -540,8 +540,7 @@ static struct inode *v9fs_qid_iget(struct super_block *sb,
+ unlock_new_inode(inode);
+ return inode;
+ error:
+- unlock_new_inode(inode);
+- iput(inode);
++ iget_failed(inode);
+ return ERR_PTR(retval);
+
+ }
+diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
+index 9861c7c951a6..4d3ecfb55fcf 100644
+--- a/fs/9p/vfs_inode_dotl.c
++++ b/fs/9p/vfs_inode_dotl.c
+@@ -149,8 +149,7 @@ static struct inode *v9fs_qid_iget_dotl(struct super_block *sb,
+ unlock_new_inode(inode);
+ return inode;
+ error:
+- unlock_new_inode(inode);
+- iput(inode);
++ iget_failed(inode);
+ return ERR_PTR(retval);
+
+ }
+diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
+index f6a596d5a637..d4a582ac3f73 100644
+--- a/fs/btrfs/inode-map.c
++++ b/fs/btrfs/inode-map.c
+@@ -246,6 +246,7 @@ void btrfs_unpin_free_ino(struct btrfs_root *root)
+ {
+ struct btrfs_free_space_ctl *ctl = root->free_ino_ctl;
+ struct rb_root *rbroot = &root->free_ino_pinned->free_space_offset;
++ spinlock_t *rbroot_lock = &root->free_ino_pinned->tree_lock;
+ struct btrfs_free_space *info;
+ struct rb_node *n;
+ u64 count;
+@@ -254,24 +255,30 @@ void btrfs_unpin_free_ino(struct btrfs_root *root)
+ return;
+
+ while (1) {
++ bool add_to_ctl = true;
++
++ spin_lock(rbroot_lock);
+ n = rb_first(rbroot);
+- if (!n)
++ if (!n) {
++ spin_unlock(rbroot_lock);
+ break;
++ }
+
+ info = rb_entry(n, struct btrfs_free_space, offset_index);
+ BUG_ON(info->bitmap); /* Logic error */
+
+ if (info->offset > root->ino_cache_progress)
+- goto free;
++ add_to_ctl = false;
+ else if (info->offset + info->bytes > root->ino_cache_progress)
+ count = root->ino_cache_progress - info->offset + 1;
+ else
+ count = info->bytes;
+
+- __btrfs_add_free_space(ctl, info->offset, count);
+-free:
+ rb_erase(&info->offset_index, rbroot);
+- kfree(info);
++ spin_unlock(rbroot_lock);
++ if (add_to_ctl)
++ __btrfs_add_free_space(ctl, info->offset, count);
++ kmem_cache_free(btrfs_free_space_cachep, info);
+ }
+ }
+
+diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
+index 1c22c6518504..37d456a9a3b8 100644
+--- a/fs/btrfs/ioctl.c
++++ b/fs/btrfs/ioctl.c
+@@ -2413,8 +2413,6 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file,
+ goto out_unlock_inode;
+ }
+
+- d_invalidate(dentry);
+-
+ down_write(&root->fs_info->subvol_sem);
+
+ err = may_destroy_subvol(dest);
+@@ -2508,7 +2506,7 @@ out_up_write:
+ out_unlock_inode:
+ mutex_unlock(&inode->i_mutex);
+ if (!err) {
+- shrink_dcache_sb(root->fs_info->sb);
++ d_invalidate(dentry);
+ btrfs_invalidate_inodes(dest);
+ d_delete(dentry);
+ ASSERT(dest->send_in_progress == 0);
+@@ -2940,7 +2938,7 @@ out_unlock:
+ static long btrfs_ioctl_file_extent_same(struct file *file,
+ struct btrfs_ioctl_same_args __user *argp)
+ {
+- struct btrfs_ioctl_same_args *same;
++ struct btrfs_ioctl_same_args *same = NULL;
+ struct btrfs_ioctl_same_extent_info *info;
+ struct inode *src = file_inode(file);
+ u64 off;
+@@ -2970,6 +2968,7 @@ static long btrfs_ioctl_file_extent_same(struct file *file,
+
+ if (IS_ERR(same)) {
+ ret = PTR_ERR(same);
++ same = NULL;
+ goto out;
+ }
+
+@@ -3040,6 +3039,7 @@ static long btrfs_ioctl_file_extent_same(struct file *file,
+
+ out:
+ mnt_drop_write_file(file);
++ kfree(same);
+ return ret;
+ }
+
+@@ -3434,6 +3434,20 @@ process_slot:
+ u64 trim = 0;
+ u64 aligned_end = 0;
+
++ /*
++ * Don't copy an inline extent into an offset
++ * greater than zero. Having an inline extent
++ * at such an offset results in chaos as btrfs
++ * isn't prepared for such cases. Just skip
++ * this case for the same reasons as commented
++ * at btrfs_ioctl_clone().
++ */
++ if (last_dest_end > 0) {
++ ret = -EOPNOTSUPP;
++ btrfs_end_transaction(trans, root);
++ goto out;
++ }
++
+ if (off > key.offset) {
+ skip = off - key.offset;
+ new_key.offset += skip;
+diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
+index 5628e25250c0..94e909c5a503 100644
+--- a/fs/btrfs/transaction.c
++++ b/fs/btrfs/transaction.c
+@@ -758,7 +758,7 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans,
+
+ if (!list_empty(&trans->ordered)) {
+ spin_lock(&info->trans_lock);
+- list_splice(&trans->ordered, &cur_trans->pending_ordered);
++ list_splice_init(&trans->ordered, &cur_trans->pending_ordered);
+ spin_unlock(&info->trans_lock);
+ }
+
+@@ -1848,7 +1848,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
+ }
+
+ spin_lock(&root->fs_info->trans_lock);
+- list_splice(&trans->ordered, &cur_trans->pending_ordered);
++ list_splice_init(&trans->ordered, &cur_trans->pending_ordered);
+ if (cur_trans->state >= TRANS_STATE_COMMIT_START) {
+ spin_unlock(&root->fs_info->trans_lock);
+ atomic_inc(&cur_trans->use_count);
+diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
+index d04968374e9d..4920fceffacb 100644
+--- a/fs/btrfs/tree-log.c
++++ b/fs/btrfs/tree-log.c
+@@ -4161,6 +4161,7 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
+ u64 ino = btrfs_ino(inode);
+ struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
+ u64 logged_isize = 0;
++ bool need_log_inode_item = true;
+
+ path = btrfs_alloc_path();
+ if (!path)
+@@ -4269,11 +4270,6 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
+ } else {
+ if (inode_only == LOG_INODE_ALL)
+ fast_search = true;
+- ret = log_inode_item(trans, log, dst_path, inode);
+- if (ret) {
+- err = ret;
+- goto out_unlock;
+- }
+ goto log_extents;
+ }
+
+@@ -4296,6 +4292,9 @@ again:
+ if (min_key.type > max_key.type)
+ break;
+
++ if (min_key.type == BTRFS_INODE_ITEM_KEY)
++ need_log_inode_item = false;
++
+ src = path->nodes[0];
+ if (ins_nr && ins_start_slot + ins_nr == path->slots[0]) {
+ ins_nr++;
+@@ -4366,6 +4365,11 @@ next_slot:
+ log_extents:
+ btrfs_release_path(path);
+ btrfs_release_path(dst_path);
++ if (need_log_inode_item) {
++ err = log_inode_item(trans, log, dst_path, inode);
++ if (err)
++ goto out_unlock;
++ }
+ if (fast_search) {
+ /*
+ * Some ordered extents started by fsync might have completed
+diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
+index e003a1e81dc3..87ba10d1d3bc 100644
+--- a/fs/ext4/extents.c
++++ b/fs/ext4/extents.c
+@@ -503,7 +503,7 @@ __read_extent_tree_block(const char *function, unsigned int line,
+ struct buffer_head *bh;
+ int err;
+
+- bh = sb_getblk(inode->i_sb, pblk);
++ bh = sb_getblk_gfp(inode->i_sb, pblk, __GFP_MOVABLE | GFP_NOFS);
+ if (unlikely(!bh))
+ return ERR_PTR(-ENOMEM);
+
+@@ -1088,7 +1088,7 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
+ err = -EIO;
+ goto cleanup;
+ }
+- bh = sb_getblk(inode->i_sb, newblock);
++ bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS);
+ if (unlikely(!bh)) {
+ err = -ENOMEM;
+ goto cleanup;
+@@ -1282,7 +1282,7 @@ static int ext4_ext_grow_indepth(handle_t *handle, struct inode *inode,
+ if (newblock == 0)
+ return err;
+
+- bh = sb_getblk(inode->i_sb, newblock);
++ bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS);
+ if (unlikely(!bh))
+ return -ENOMEM;
+ lock_buffer(bh);
+diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
+index 958824019509..94ae6874c2cb 100644
+--- a/fs/ext4/indirect.c
++++ b/fs/ext4/indirect.c
+@@ -565,7 +565,7 @@ int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
+ EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
+ EXT4_ERROR_INODE(inode, "Can't allocate blocks for "
+ "non-extent mapped inodes with bigalloc");
+- return -ENOSPC;
++ return -EUCLEAN;
+ }
+
+ /* Set up for the direct block allocation */
+diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
+index 0554b0b5957b..966c614822cc 100644
+--- a/fs/ext4/inode.c
++++ b/fs/ext4/inode.c
+@@ -1342,7 +1342,7 @@ static void ext4_da_page_release_reservation(struct page *page,
+ unsigned int offset,
+ unsigned int length)
+ {
+- int to_release = 0;
++ int to_release = 0, contiguous_blks = 0;
+ struct buffer_head *head, *bh;
+ unsigned int curr_off = 0;
+ struct inode *inode = page->mapping->host;
+@@ -1363,14 +1363,23 @@ static void ext4_da_page_release_reservation(struct page *page,
+
+ if ((offset <= curr_off) && (buffer_delay(bh))) {
+ to_release++;
++ contiguous_blks++;
+ clear_buffer_delay(bh);
++ } else if (contiguous_blks) {
++ lblk = page->index <<
++ (PAGE_CACHE_SHIFT - inode->i_blkbits);
++ lblk += (curr_off >> inode->i_blkbits) -
++ contiguous_blks;
++ ext4_es_remove_extent(inode, lblk, contiguous_blks);
++ contiguous_blks = 0;
+ }
+ curr_off = next_off;
+ } while ((bh = bh->b_this_page) != head);
+
+- if (to_release) {
++ if (contiguous_blks) {
+ lblk = page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+- ext4_es_remove_extent(inode, lblk, to_release);
++ lblk += (curr_off >> inode->i_blkbits) - contiguous_blks;
++ ext4_es_remove_extent(inode, lblk, contiguous_blks);
+ }
+
+ /* If we have released all the blocks belonging to a cluster, then we
+@@ -1701,19 +1710,32 @@ static int __ext4_journalled_writepage(struct page *page,
+ ext4_walk_page_buffers(handle, page_bufs, 0, len,
+ NULL, bget_one);
+ }
+- /* As soon as we unlock the page, it can go away, but we have
+- * references to buffers so we are safe */
++ /*
++ * We need to release the page lock before we start the
++ * journal, so grab a reference so the page won't disappear
++ * out from under us.
++ */
++ get_page(page);
+ unlock_page(page);
+
+ handle = ext4_journal_start(inode, EXT4_HT_WRITE_PAGE,
+ ext4_writepage_trans_blocks(inode));
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+- goto out;
++ put_page(page);
++ goto out_no_pagelock;
+ }
+-
+ BUG_ON(!ext4_handle_valid(handle));
+
++ lock_page(page);
++ put_page(page);
++ if (page->mapping != mapping) {
++ /* The page got truncated from under us */
++ ext4_journal_stop(handle);
++ ret = 0;
++ goto out;
++ }
++
+ if (inline_data) {
+ BUFFER_TRACE(inode_bh, "get write access");
+ ret = ext4_journal_get_write_access(handle, inode_bh);
+@@ -1739,6 +1761,8 @@ static int __ext4_journalled_writepage(struct page *page,
+ NULL, bput_one);
+ ext4_set_inode_state(inode, EXT4_STATE_JDATA);
+ out:
++ unlock_page(page);
++out_no_pagelock:
+ brelse(inode_bh);
+ return ret;
+ }
+@@ -4345,7 +4369,12 @@ static void ext4_update_other_inodes_time(struct super_block *sb,
+ int inode_size = EXT4_INODE_SIZE(sb);
+
+ oi.orig_ino = orig_ino;
+- ino = (orig_ino & ~(inodes_per_block - 1)) + 1;
++ /*
++ * Calculate the first inode in the inode table block. Inode
++ * numbers are one-based. That is, the first inode in a block
++ * (assuming 4k blocks and 256 byte inodes) is (n*16 + 1).
++ */
++ ino = ((orig_ino - 1) & ~(inodes_per_block - 1)) + 1;
+ for (i = 0; i < inodes_per_block; i++, ino++, buf += inode_size) {
+ if (ino == orig_ino)
+ continue;
+diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
+index 8d1e60214ef0..41260489d3bc 100644
+--- a/fs/ext4/mballoc.c
++++ b/fs/ext4/mballoc.c
+@@ -4800,18 +4800,12 @@ do_more:
+ /*
+ * blocks being freed are metadata. these blocks shouldn't
+ * be used until this transaction is committed
++ *
++ * We use __GFP_NOFAIL because ext4_free_blocks() is not allowed
++ * to fail.
+ */
+- retry:
+- new_entry = kmem_cache_alloc(ext4_free_data_cachep, GFP_NOFS);
+- if (!new_entry) {
+- /*
+- * We use a retry loop because
+- * ext4_free_blocks() is not allowed to fail.
+- */
+- cond_resched();
+- congestion_wait(BLK_RW_ASYNC, HZ/50);
+- goto retry;
+- }
++ new_entry = kmem_cache_alloc(ext4_free_data_cachep,
++ GFP_NOFS|__GFP_NOFAIL);
+ new_entry->efd_start_cluster = bit;
+ new_entry->efd_group = block_group;
+ new_entry->efd_count = count_clusters;
+diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
+index b52374e42102..6163ad21cb0e 100644
+--- a/fs/ext4/migrate.c
++++ b/fs/ext4/migrate.c
+@@ -620,6 +620,7 @@ int ext4_ind_migrate(struct inode *inode)
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ struct ext4_extent *ex;
+ unsigned int i, len;
++ ext4_lblk_t start, end;
+ ext4_fsblk_t blk;
+ handle_t *handle;
+ int ret;
+@@ -633,6 +634,14 @@ int ext4_ind_migrate(struct inode *inode)
+ EXT4_FEATURE_RO_COMPAT_BIGALLOC))
+ return -EOPNOTSUPP;
+
++ /*
++ * In order to get correct extent info, force all delayed allocation
++ * blocks to be allocated, otherwise delayed allocation blocks may not
++ * be reflected and bypass the checks on extent header.
++ */
++ if (test_opt(inode->i_sb, DELALLOC))
++ ext4_alloc_da_blocks(inode);
++
+ handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, 1);
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+@@ -650,11 +659,13 @@ int ext4_ind_migrate(struct inode *inode)
+ goto errout;
+ }
+ if (eh->eh_entries == 0)
+- blk = len = 0;
++ blk = len = start = end = 0;
+ else {
+ len = le16_to_cpu(ex->ee_len);
+ blk = ext4_ext_pblock(ex);
+- if (len > EXT4_NDIR_BLOCKS) {
++ start = le32_to_cpu(ex->ee_block);
++ end = start + len - 1;
++ if (end >= EXT4_NDIR_BLOCKS) {
+ ret = -EOPNOTSUPP;
+ goto errout;
+ }
+@@ -662,7 +673,7 @@ int ext4_ind_migrate(struct inode *inode)
+
+ ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);
+ memset(ei->i_data, 0, sizeof(ei->i_data));
+- for (i=0; i < len; i++)
++ for (i = start; i <= end; i++)
+ ei->i_data[i] = cpu_to_le32(blk++);
+ ext4_mark_inode_dirty(handle, inode);
+ errout:
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index ca9d4a2fed41..ca12affdba96 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -807,6 +807,7 @@ static void ext4_put_super(struct super_block *sb)
+ dump_orphan_list(sb, sbi);
+ J_ASSERT(list_empty(&sbi->s_orphan));
+
++ sync_blockdev(sb->s_bdev);
+ invalidate_bdev(sb->s_bdev);
+ if (sbi->journal_bdev && sbi->journal_bdev != sb->s_bdev) {
+ /*
+@@ -4943,6 +4944,9 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
+ set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
+ }
+
++ if (*flags & MS_LAZYTIME)
++ sb->s_flags |= MS_LAZYTIME;
++
+ if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
+ if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) {
+ err = -EROFS;
+diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
+index 18dacf9ed8ff..708d697113fc 100644
+--- a/fs/fuse/inode.c
++++ b/fs/fuse/inode.c
+@@ -1026,6 +1026,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
+ goto err_fput;
+
+ fuse_conn_init(fc);
++ fc->release = fuse_free_conn;
+
+ fc->dev = sb->s_dev;
+ fc->sb = sb;
+@@ -1040,7 +1041,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
+ fc->dont_mask = 1;
+ sb->s_flags |= MS_POSIXACL;
+
+- fc->release = fuse_free_conn;
+ fc->flags = d.flags;
+ fc->user_id = d.user_id;
+ fc->group_id = d.group_id;
+diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
+index 7cd00d3a7c9b..8685c655737f 100644
+--- a/fs/hpfs/super.c
++++ b/fs/hpfs/super.c
+@@ -52,17 +52,20 @@ static void unmark_dirty(struct super_block *s)
+ }
+
+ /* Filesystem error... */
+-static char err_buf[1024];
+-
+ void hpfs_error(struct super_block *s, const char *fmt, ...)
+ {
++ struct va_format vaf;
+ va_list args;
+
+ va_start(args, fmt);
+- vsnprintf(err_buf, sizeof(err_buf), fmt, args);
++
++ vaf.fmt = fmt;
++ vaf.va = &args;
++
++ pr_err("filesystem error: %pV", &vaf);
++
+ va_end(args);
+
+- pr_err("filesystem error: %s", err_buf);
+ if (!hpfs_sb(s)->sb_was_error) {
+ if (hpfs_sb(s)->sb_err == 2) {
+ pr_cont("; crashing the system because you wanted it\n");
+@@ -424,11 +427,14 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
+ int o;
+ struct hpfs_sb_info *sbi = hpfs_sb(s);
+ char *new_opts = kstrdup(data, GFP_KERNEL);
+-
++
++ if (!new_opts)
++ return -ENOMEM;
++
+ sync_filesystem(s);
+
+ *flags |= MS_NOATIME;
+-
++
+ hpfs_lock(s);
+ uid = sbi->sb_uid; gid = sbi->sb_gid;
+ umask = 0777 & ~sbi->sb_mode;
+diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
+index 988b32ed4c87..4227dc4f7437 100644
+--- a/fs/jbd2/checkpoint.c
++++ b/fs/jbd2/checkpoint.c
+@@ -390,7 +390,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
+ unsigned long blocknr;
+
+ if (is_journal_aborted(journal))
+- return 1;
++ return -EIO;
+
+ if (!jbd2_journal_get_log_tail(journal, &first_tid, &blocknr))
+ return 1;
+@@ -405,10 +405,9 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
+ * jbd2_cleanup_journal_tail() doesn't get called all that often.
+ */
+ if (journal->j_flags & JBD2_BARRIER)
+- blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
++ blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL);
+
+- __jbd2_update_log_tail(journal, first_tid, blocknr);
+- return 0;
++ return __jbd2_update_log_tail(journal, first_tid, blocknr);
+ }
+
+
+diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
+index b96bd8076b70..112fad9e1e20 100644
+--- a/fs/jbd2/journal.c
++++ b/fs/jbd2/journal.c
+@@ -885,9 +885,10 @@ int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
+ *
+ * Requires j_checkpoint_mutex
+ */
+-void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
++int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
+ {
+ unsigned long freed;
++ int ret;
+
+ BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
+
+@@ -897,7 +898,10 @@ void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
+ * space and if we lose sb update during power failure we'd replay
+ * old transaction with possibly newly overwritten data.
+ */
+- jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
++ ret = jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
++ if (ret)
++ goto out;
++
+ write_lock(&journal->j_state_lock);
+ freed = block - journal->j_tail;
+ if (block < journal->j_tail)
+@@ -913,6 +917,9 @@ void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
+ journal->j_tail_sequence = tid;
+ journal->j_tail = block;
+ write_unlock(&journal->j_state_lock);
++
++out:
++ return ret;
+ }
+
+ /*
+@@ -1331,7 +1338,7 @@ static int journal_reset(journal_t *journal)
+ return jbd2_journal_start_thread(journal);
+ }
+
+-static void jbd2_write_superblock(journal_t *journal, int write_op)
++static int jbd2_write_superblock(journal_t *journal, int write_op)
+ {
+ struct buffer_head *bh = journal->j_sb_buffer;
+ journal_superblock_t *sb = journal->j_superblock;
+@@ -1370,7 +1377,10 @@ static void jbd2_write_superblock(journal_t *journal, int write_op)
+ printk(KERN_ERR "JBD2: Error %d detected when updating "
+ "journal superblock for %s.\n", ret,
+ journal->j_devname);
++ jbd2_journal_abort(journal, ret);
+ }
++
++ return ret;
+ }
+
+ /**
+@@ -1383,10 +1393,11 @@ static void jbd2_write_superblock(journal_t *journal, int write_op)
+ * Update a journal's superblock information about log tail and write it to
+ * disk, waiting for the IO to complete.
+ */
+-void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
++int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
+ unsigned long tail_block, int write_op)
+ {
+ journal_superblock_t *sb = journal->j_superblock;
++ int ret;
+
+ BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
+ jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n",
+@@ -1395,13 +1406,18 @@ void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
+ sb->s_sequence = cpu_to_be32(tail_tid);
+ sb->s_start = cpu_to_be32(tail_block);
+
+- jbd2_write_superblock(journal, write_op);
++ ret = jbd2_write_superblock(journal, write_op);
++ if (ret)
++ goto out;
+
+ /* Log is no longer empty */
+ write_lock(&journal->j_state_lock);
+ WARN_ON(!sb->s_sequence);
+ journal->j_flags &= ~JBD2_FLUSHED;
+ write_unlock(&journal->j_state_lock);
++
++out:
++ return ret;
+ }
+
+ /**
+@@ -1950,7 +1966,14 @@ int jbd2_journal_flush(journal_t *journal)
+ return -EIO;
+
+ mutex_lock(&journal->j_checkpoint_mutex);
+- jbd2_cleanup_journal_tail(journal);
++ if (!err) {
++ err = jbd2_cleanup_journal_tail(journal);
++ if (err < 0) {
++ mutex_unlock(&journal->j_checkpoint_mutex);
++ goto out;
++ }
++ err = 0;
++ }
+
+ /* Finally, mark the journal as really needing no recovery.
+ * This sets s_start==0 in the underlying superblock, which is
+@@ -1966,7 +1989,8 @@ int jbd2_journal_flush(journal_t *journal)
+ J_ASSERT(journal->j_head == journal->j_tail);
+ J_ASSERT(journal->j_tail_sequence == journal->j_transaction_sequence);
+ write_unlock(&journal->j_state_lock);
+- return 0;
++out:
++ return err;
+ }
+
+ /**
+diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
+index 7d05089e52d6..6f5f0f425e86 100644
+--- a/fs/nfs/flexfilelayout/flexfilelayout.c
++++ b/fs/nfs/flexfilelayout/flexfilelayout.c
+@@ -631,7 +631,7 @@ static void ff_layout_reset_write(struct nfs_pgio_header *hdr, bool retry_pnfs)
+ nfs_direct_set_resched_writes(hdr->dreq);
+ /* fake unstable write to let common nfs resend pages */
+ hdr->verf.committed = NFS_UNSTABLE;
+- hdr->good_bytes = 0;
++ hdr->good_bytes = hdr->args.count;
+ }
+ return;
+ }
+diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+index 77a2d026aa12..f13e1969eedd 100644
+--- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c
++++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+@@ -324,7 +324,8 @@ static int ff_layout_update_mirror_cred(struct nfs4_ff_layout_mirror *mirror,
+ __func__, PTR_ERR(cred));
+ return PTR_ERR(cred);
+ } else {
+- mirror->cred = cred;
++ if (cmpxchg(&mirror->cred, NULL, cred))
++ put_rpccred(cred);
+ }
+ }
+ return 0;
+@@ -386,7 +387,7 @@ nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
+ /* matching smp_wmb() in _nfs4_pnfs_v3/4_ds_connect */
+ smp_rmb();
+ if (ds->ds_clp)
+- goto out;
++ goto out_update_creds;
+
+ flavor = nfs4_ff_layout_choose_authflavor(mirror);
+
+@@ -430,7 +431,7 @@ nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
+ }
+ }
+ }
+-
++out_update_creds:
+ if (ff_layout_update_mirror_cred(mirror, ds))
+ ds = NULL;
+ out:
+diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
+index 53852a4bd88b..9b04c2e6fffc 100644
+--- a/fs/nfs/nfs3xdr.c
++++ b/fs/nfs/nfs3xdr.c
+@@ -1342,7 +1342,7 @@ static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
+ if (args->npages != 0)
+ xdr_write_pages(xdr, args->pages, 0, args->len);
+ else
+- xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE);
++ xdr_reserve_space(xdr, args->len);
+
+ error = nfsacl_encode(xdr->buf, base, args->inode,
+ (args->mask & NFS_ACL) ?
+diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
+index 2782cfca2265..ddef1dc80cf7 100644
+--- a/fs/nfs/nfs4state.c
++++ b/fs/nfs/nfs4state.c
+@@ -1482,6 +1482,8 @@ restart:
+ spin_unlock(&state->state_lock);
+ }
+ nfs4_put_open_state(state);
++ clear_bit(NFS4CLNT_RECLAIM_NOGRACE,
++ &state->flags);
+ spin_lock(&sp->so_lock);
+ goto restart;
+ }
+diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
+index 230606243be6..d47c188682b1 100644
+--- a/fs/nfs/pnfs.c
++++ b/fs/nfs/pnfs.c
+@@ -1821,6 +1821,7 @@ int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *hdr)
+ /* Resend all requests through the MDS */
+ nfs_pageio_init_write(&pgio, hdr->inode, FLUSH_STABLE, true,
+ hdr->completion_ops);
++ set_bit(NFS_CONTEXT_RESEND_WRITES, &hdr->args.context->flags);
+ return nfs_pageio_resend(&pgio, hdr);
+ }
+ EXPORT_SYMBOL_GPL(pnfs_write_done_resend_to_mds);
+@@ -1865,6 +1866,7 @@ pnfs_write_through_mds(struct nfs_pageio_descriptor *desc,
+ mirror->pg_recoalesce = 1;
+ }
+ nfs_pgio_data_destroy(hdr);
++ hdr->release(hdr);
+ }
+
+ static enum pnfs_try_status
+@@ -1979,6 +1981,7 @@ pnfs_read_through_mds(struct nfs_pageio_descriptor *desc,
+ mirror->pg_recoalesce = 1;
+ }
+ nfs_pgio_data_destroy(hdr);
++ hdr->release(hdr);
+ }
+
+ /*
+diff --git a/fs/nfs/write.c b/fs/nfs/write.c
+index dfc19f1575a1..daf355642845 100644
+--- a/fs/nfs/write.c
++++ b/fs/nfs/write.c
+@@ -1289,6 +1289,7 @@ static void nfs_initiate_write(struct nfs_pgio_header *hdr,
+ static void nfs_redirty_request(struct nfs_page *req)
+ {
+ nfs_mark_request_dirty(req);
++ set_bit(NFS_CONTEXT_RESEND_WRITES, &req->wb_context->flags);
+ nfs_unlock_request(req);
+ nfs_end_page_writeback(req);
+ nfs_release_request(req);
+diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
+index 907870e81a72..70e9af551600 100644
+--- a/fs/overlayfs/readdir.c
++++ b/fs/overlayfs/readdir.c
+@@ -23,6 +23,7 @@ struct ovl_cache_entry {
+ u64 ino;
+ struct list_head l_node;
+ struct rb_node node;
++ struct ovl_cache_entry *next_maybe_whiteout;
+ bool is_whiteout;
+ char name[];
+ };
+@@ -39,7 +40,7 @@ struct ovl_readdir_data {
+ struct rb_root root;
+ struct list_head *list;
+ struct list_head middle;
+- struct dentry *dir;
++ struct ovl_cache_entry *first_maybe_whiteout;
+ int count;
+ int err;
+ };
+@@ -79,7 +80,7 @@ static struct ovl_cache_entry *ovl_cache_entry_find(struct rb_root *root,
+ return NULL;
+ }
+
+-static struct ovl_cache_entry *ovl_cache_entry_new(struct dentry *dir,
++static struct ovl_cache_entry *ovl_cache_entry_new(struct ovl_readdir_data *rdd,
+ const char *name, int len,
+ u64 ino, unsigned int d_type)
+ {
+@@ -98,29 +99,8 @@ static struct ovl_cache_entry *ovl_cache_entry_new(struct dentry *dir,
+ p->is_whiteout = false;
+
+ if (d_type == DT_CHR) {
+- struct dentry *dentry;
+- const struct cred *old_cred;
+- struct cred *override_cred;
+-
+- override_cred = prepare_creds();
+- if (!override_cred) {
+- kfree(p);
+- return NULL;
+- }
+-
+- /*
+- * CAP_DAC_OVERRIDE for lookup
+- */
+- cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE);
+- old_cred = override_creds(override_cred);
+-
+- dentry = lookup_one_len(name, dir, len);
+- if (!IS_ERR(dentry)) {
+- p->is_whiteout = ovl_is_whiteout(dentry);
+- dput(dentry);
+- }
+- revert_creds(old_cred);
+- put_cred(override_cred);
++ p->next_maybe_whiteout = rdd->first_maybe_whiteout;
++ rdd->first_maybe_whiteout = p;
+ }
+ return p;
+ }
+@@ -148,7 +128,7 @@ static int ovl_cache_entry_add_rb(struct ovl_readdir_data *rdd,
+ return 0;
+ }
+
+- p = ovl_cache_entry_new(rdd->dir, name, len, ino, d_type);
++ p = ovl_cache_entry_new(rdd, name, len, ino, d_type);
+ if (p == NULL)
+ return -ENOMEM;
+
+@@ -169,7 +149,7 @@ static int ovl_fill_lower(struct ovl_readdir_data *rdd,
+ if (p) {
+ list_move_tail(&p->l_node, &rdd->middle);
+ } else {
+- p = ovl_cache_entry_new(rdd->dir, name, namelen, ino, d_type);
++ p = ovl_cache_entry_new(rdd, name, namelen, ino, d_type);
+ if (p == NULL)
+ rdd->err = -ENOMEM;
+ else
+@@ -219,6 +199,43 @@ static int ovl_fill_merge(struct dir_context *ctx, const char *name,
+ return ovl_fill_lower(rdd, name, namelen, offset, ino, d_type);
+ }
+
++static int ovl_check_whiteouts(struct dentry *dir, struct ovl_readdir_data *rdd)
++{
++ int err;
++ struct ovl_cache_entry *p;
++ struct dentry *dentry;
++ const struct cred *old_cred;
++ struct cred *override_cred;
++
++ override_cred = prepare_creds();
++ if (!override_cred)
++ return -ENOMEM;
++
++ /*
++ * CAP_DAC_OVERRIDE for lookup
++ */
++ cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE);
++ old_cred = override_creds(override_cred);
++
++ err = mutex_lock_killable(&dir->d_inode->i_mutex);
++ if (!err) {
++ while (rdd->first_maybe_whiteout) {
++ p = rdd->first_maybe_whiteout;
++ rdd->first_maybe_whiteout = p->next_maybe_whiteout;
++ dentry = lookup_one_len(p->name, dir, p->len);
++ if (!IS_ERR(dentry)) {
++ p->is_whiteout = ovl_is_whiteout(dentry);
++ dput(dentry);
++ }
++ }
++ mutex_unlock(&dir->d_inode->i_mutex);
++ }
++ revert_creds(old_cred);
++ put_cred(override_cred);
++
++ return err;
++}
++
+ static inline int ovl_dir_read(struct path *realpath,
+ struct ovl_readdir_data *rdd)
+ {
+@@ -229,7 +246,7 @@ static inline int ovl_dir_read(struct path *realpath,
+ if (IS_ERR(realfile))
+ return PTR_ERR(realfile);
+
+- rdd->dir = realpath->dentry;
++ rdd->first_maybe_whiteout = NULL;
+ rdd->ctx.pos = 0;
+ do {
+ rdd->count = 0;
+@@ -238,6 +255,10 @@ static inline int ovl_dir_read(struct path *realpath,
+ if (err >= 0)
+ err = rdd->err;
+ } while (!err && rdd->count);
++
++ if (!err && rdd->first_maybe_whiteout)
++ err = ovl_check_whiteouts(realpath->dentry, rdd);
++
+ fput(realfile);
+
+ return err;
+diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c
+index 3fbf167cfb4c..73e75a87af50 100644
+--- a/fs/xfs/xfs_attr_inactive.c
++++ b/fs/xfs/xfs_attr_inactive.c
+@@ -435,8 +435,14 @@ xfs_attr_inactive(
+ */
+ xfs_trans_ijoin(trans, dp, 0);
+
+- /* invalidate and truncate the attribute fork extents */
+- if (dp->i_d.di_aformat != XFS_DINODE_FMT_LOCAL) {
++ /*
++ * Invalidate and truncate the attribute fork extents. Make sure the
++ * fork actually has attributes as otherwise the invalidation has no
++ * blocks to read and returns an error. In this case, just do the fork
++ * removal below.
++ */
++ if (xfs_inode_hasattr(dp) &&
++ dp->i_d.di_aformat != XFS_DINODE_FMT_LOCAL) {
+ error = xfs_attr3_root_inactive(&trans, dp);
+ if (error)
+ goto out_cancel;
+diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
+index 3df411eadb86..40c076523cfa 100644
+--- a/fs/xfs/xfs_symlink.c
++++ b/fs/xfs/xfs_symlink.c
+@@ -104,7 +104,7 @@ xfs_readlink_bmap(
+ cur_chunk += sizeof(struct xfs_dsymlink_hdr);
+ }
+
+- memcpy(link + offset, bp->b_addr, byte_cnt);
++ memcpy(link + offset, cur_chunk, byte_cnt);
+
+ pathlen -= byte_cnt;
+ offset += byte_cnt;
+diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
+index 08ef57bc8d63..f5ed1f17f061 100644
+--- a/include/acpi/acpixf.h
++++ b/include/acpi/acpixf.h
+@@ -195,9 +195,18 @@ ACPI_INIT_GLOBAL(u8, acpi_gbl_do_not_use_xsdt, FALSE);
+ * address. Although ACPICA adheres to the ACPI specification which
+ * requires the use of the corresponding 64-bit address if it is non-zero,
+ * some machines have been found to have a corrupted non-zero 64-bit
+- * address. Default is TRUE, favor the 32-bit addresses.
++ * address. Default is FALSE, do not favor the 32-bit addresses.
+ */
+-ACPI_INIT_GLOBAL(u8, acpi_gbl_use32_bit_fadt_addresses, TRUE);
++ACPI_INIT_GLOBAL(u8, acpi_gbl_use32_bit_fadt_addresses, FALSE);
++
++/*
++ * Optionally use 32-bit FACS table addresses.
++ * It is reported that some platforms fail to resume from system suspending
++ * if 64-bit FACS table address is selected:
++ * https://bugzilla.kernel.org/show_bug.cgi?id=74021
++ * Default is TRUE, favor the 32-bit addresses.
++ */
++ACPI_INIT_GLOBAL(u8, acpi_gbl_use32_bit_facs_addresses, TRUE);
+
+ /*
+ * Optionally truncate I/O addresses to 16 bits. Provides compatibility
+diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
+index 1c3002e1db20..181427ef3549 100644
+--- a/include/acpi/actypes.h
++++ b/include/acpi/actypes.h
+@@ -572,6 +572,7 @@ typedef u64 acpi_integer;
+ #define ACPI_NO_ACPI_ENABLE 0x10
+ #define ACPI_NO_DEVICE_INIT 0x20
+ #define ACPI_NO_OBJECT_INIT 0x40
++#define ACPI_NO_FACS_INIT 0x80
+
+ /*
+ * Initialization state
+diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
+index c157103492b0..3f13b910f8d2 100644
+--- a/include/drm/drm_atomic.h
++++ b/include/drm/drm_atomic.h
+@@ -77,26 +77,26 @@ int __must_check drm_atomic_async_commit(struct drm_atomic_state *state);
+
+ #define for_each_connector_in_state(state, connector, connector_state, __i) \
+ for ((__i) = 0; \
+- (connector) = (state)->connectors[__i], \
+- (connector_state) = (state)->connector_states[__i], \
+- (__i) < (state)->num_connector; \
++ (__i) < (state)->num_connector && \
++ ((connector) = (state)->connectors[__i], \
++ (connector_state) = (state)->connector_states[__i], 1); \
+ (__i)++) \
+ if (connector)
+
+ #define for_each_crtc_in_state(state, crtc, crtc_state, __i) \
+ for ((__i) = 0; \
+- (crtc) = (state)->crtcs[__i], \
+- (crtc_state) = (state)->crtc_states[__i], \
+- (__i) < (state)->dev->mode_config.num_crtc; \
++ (__i) < (state)->dev->mode_config.num_crtc && \
++ ((crtc) = (state)->crtcs[__i], \
++ (crtc_state) = (state)->crtc_states[__i], 1); \
+ (__i)++) \
+ if (crtc_state)
+
+-#define for_each_plane_in_state(state, plane, plane_state, __i) \
+- for ((__i) = 0; \
+- (plane) = (state)->planes[__i], \
+- (plane_state) = (state)->plane_states[__i], \
+- (__i) < (state)->dev->mode_config.num_total_plane; \
+- (__i)++) \
++#define for_each_plane_in_state(state, plane, plane_state, __i) \
++ for ((__i) = 0; \
++ (__i) < (state)->dev->mode_config.num_total_plane && \
++ ((plane) = (state)->planes[__i], \
++ (plane_state) = (state)->plane_states[__i], 1); \
++ (__i)++) \
+ if (plane_state)
+
+ #endif /* DRM_ATOMIC_H_ */
+diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
+index ca71c03143d1..54233583c6cb 100644
+--- a/include/drm/drm_crtc.h
++++ b/include/drm/drm_crtc.h
+@@ -731,6 +731,8 @@ struct drm_connector {
+ uint8_t num_h_tile, num_v_tile;
+ uint8_t tile_h_loc, tile_v_loc;
+ uint16_t tile_h_size, tile_v_size;
++
++ struct list_head destroy_list;
+ };
+
+ /**
+diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
+index a2507817be41..86d0b25ed054 100644
+--- a/include/drm/drm_dp_mst_helper.h
++++ b/include/drm/drm_dp_mst_helper.h
+@@ -463,6 +463,10 @@ struct drm_dp_mst_topology_mgr {
+ struct work_struct work;
+
+ struct work_struct tx_work;
++
++ struct list_head destroy_connector_list;
++ struct mutex destroy_connector_lock;
++ struct work_struct destroy_connector_work;
+ };
+
+ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, struct device *dev, struct drm_dp_aux *aux, int max_dpcd_transaction_bytes, int max_payloads, int conn_base_id);
+diff --git a/include/linux/acpi.h b/include/linux/acpi.h
+index 5da2d2e9d38e..4550be3bb63b 100644
+--- a/include/linux/acpi.h
++++ b/include/linux/acpi.h
+@@ -332,9 +332,6 @@ int acpi_check_region(resource_size_t start, resource_size_t n,
+
+ int acpi_resources_are_enforced(void);
+
+-int acpi_reserve_region(u64 start, unsigned int length, u8 space_id,
+- unsigned long flags, char *desc);
+-
+ #ifdef CONFIG_HIBERNATION
+ void __init acpi_no_s4_hw_signature(void);
+ #endif
+@@ -530,13 +527,6 @@ static inline int acpi_check_region(resource_size_t start, resource_size_t n,
+ return 0;
+ }
+
+-static inline int acpi_reserve_region(u64 start, unsigned int length,
+- u8 space_id, unsigned long flags,
+- char *desc)
+-{
+- return -ENXIO;
+-}
+-
+ struct acpi_table_header;
+ static inline int acpi_table_parse(char *id,
+ int (*handler)(struct acpi_table_header *))
+diff --git a/include/linux/ata.h b/include/linux/ata.h
+index b666b773e111..533dbb6428f5 100644
+--- a/include/linux/ata.h
++++ b/include/linux/ata.h
+@@ -45,6 +45,7 @@ enum {
+ ATA_SECT_SIZE = 512,
+ ATA_MAX_SECTORS_128 = 128,
+ ATA_MAX_SECTORS = 256,
++ ATA_MAX_SECTORS_1024 = 1024,
+ ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
+ ATA_MAX_SECTORS_TAPE = 65535,
+
+diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
+index 73b45225a7ca..e6797ded700e 100644
+--- a/include/linux/buffer_head.h
++++ b/include/linux/buffer_head.h
+@@ -317,6 +317,13 @@ sb_getblk(struct super_block *sb, sector_t block)
+ return __getblk_gfp(sb->s_bdev, block, sb->s_blocksize, __GFP_MOVABLE);
+ }
+
++
++static inline struct buffer_head *
++sb_getblk_gfp(struct super_block *sb, sector_t block, gfp_t gfp)
++{
++ return __getblk_gfp(sb->s_bdev, block, sb->s_blocksize, gfp);
++}
++
+ static inline struct buffer_head *
+ sb_find_get_block(struct super_block *sb, sector_t block)
+ {
+diff --git a/include/linux/compiler-intel.h b/include/linux/compiler-intel.h
+index 0c9a2f2c2802..d4c71132d07f 100644
+--- a/include/linux/compiler-intel.h
++++ b/include/linux/compiler-intel.h
+@@ -13,10 +13,12 @@
+ /* Intel ECC compiler doesn't support gcc specific asm stmts.
+ * It uses intrinsics to do the equivalent things.
+ */
++#undef barrier
+ #undef barrier_data
+ #undef RELOC_HIDE
+ #undef OPTIMIZER_HIDE_VAR
+
++#define barrier() __memory_barrier()
+ #define barrier_data(ptr) barrier()
+
+ #define RELOC_HIDE(ptr, off) \
+diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
+index 3a7c9ffd5ab9..da042657dc31 100644
+--- a/include/linux/gpio/consumer.h
++++ b/include/linux/gpio/consumer.h
+@@ -406,6 +406,21 @@ static inline int desc_to_gpio(const struct gpio_desc *desc)
+ return -EINVAL;
+ }
+
++/* Child properties interface */
++struct fwnode_handle;
++
++static inline struct gpio_desc *fwnode_get_named_gpiod(
++ struct fwnode_handle *fwnode, const char *propname)
++{
++ return ERR_PTR(-ENOSYS);
++}
++
++static inline struct gpio_desc *devm_get_gpiod_from_child(
++ struct device *dev, const char *con_id, struct fwnode_handle *child)
++{
++ return ERR_PTR(-ENOSYS);
++}
++
+ #endif /* CONFIG_GPIOLIB */
+
+ /*
+diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
+index 0042bf330b99..c02b5ce6c5cd 100644
+--- a/include/linux/hid-sensor-hub.h
++++ b/include/linux/hid-sensor-hub.h
+@@ -230,6 +230,7 @@ struct hid_sensor_common {
+ struct platform_device *pdev;
+ unsigned usage_id;
+ atomic_t data_ready;
++ atomic_t user_requested_state;
+ struct iio_trigger *trigger;
+ struct hid_sensor_hub_attribute_info poll;
+ struct hid_sensor_hub_attribute_info report_state;
+diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
+index 20e7f78041c8..edb640ae9a94 100644
+--- a/include/linux/jbd2.h
++++ b/include/linux/jbd2.h
+@@ -1035,7 +1035,7 @@ struct buffer_head *jbd2_journal_get_descriptor_buffer(journal_t *journal);
+ int jbd2_journal_next_log_block(journal_t *, unsigned long long *);
+ int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
+ unsigned long *block);
+-void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
++int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
+ void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
+
+ /* Commit management */
+@@ -1157,7 +1157,7 @@ extern int jbd2_journal_recover (journal_t *journal);
+ extern int jbd2_journal_wipe (journal_t *, int);
+ extern int jbd2_journal_skip_recovery (journal_t *);
+ extern void jbd2_journal_update_sb_errno(journal_t *);
+-extern void jbd2_journal_update_sb_log_tail (journal_t *, tid_t,
++extern int jbd2_journal_update_sb_log_tail (journal_t *, tid_t,
+ unsigned long, int);
+ extern void __jbd2_journal_abort_hard (journal_t *);
+ extern void jbd2_journal_abort (journal_t *, int);
+diff --git a/include/linux/libata.h b/include/linux/libata.h
+index 28aeae46f355..e0e33787c485 100644
+--- a/include/linux/libata.h
++++ b/include/linux/libata.h
+@@ -431,6 +431,9 @@ enum {
+ ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
+ ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
+ ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
++ ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */
++ ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
++ ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */
+
+ /* DMA mask for user DMA control: User visible values; DO NOT
+ renumber */
+diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
+index 93ab6071bbe9..e9e9a8dcfb47 100644
+--- a/include/linux/nfs_xdr.h
++++ b/include/linux/nfs_xdr.h
+@@ -1142,7 +1142,7 @@ struct nfs41_state_protection {
+ struct nfs4_op_map allow;
+ };
+
+-#define NFS4_EXCHANGE_ID_LEN (48)
++#define NFS4_EXCHANGE_ID_LEN (127)
+ struct nfs41_exchange_id_args {
+ struct nfs_client *client;
+ nfs4_verifier *verifier;
+diff --git a/include/linux/of.h b/include/linux/of.h
+index b871ff9d81d7..8135d507d089 100644
+--- a/include/linux/of.h
++++ b/include/linux/of.h
+@@ -673,7 +673,10 @@ static inline void of_property_clear_flag(struct property *p, unsigned long flag
+ #if defined(CONFIG_OF) && defined(CONFIG_NUMA)
+ extern int of_node_to_nid(struct device_node *np);
+ #else
+-static inline int of_node_to_nid(struct device_node *device) { return 0; }
++static inline int of_node_to_nid(struct device_node *device)
++{
++ return NUMA_NO_NODE;
++}
+ #endif
+
+ static inline struct device_node *of_find_matching_node(
+diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
+index 551b6737f5df..a7e41fb6ed54 100644
+--- a/include/uapi/drm/i915_drm.h
++++ b/include/uapi/drm/i915_drm.h
+@@ -1065,6 +1065,14 @@ struct drm_i915_reg_read {
+ __u64 offset;
+ __u64 val; /* Return value */
+ };
++/* Known registers:
++ *
++ * Render engine timestamp - 0x2358 + 64bit - gen7+
++ * - Note this register returns an invalid value if using the default
++ * single instruction 8byte read, in order to workaround that use
++ * offset (0x2538 | 1) instead.
++ *
++ */
+
+ struct drm_i915_reset_stats {
+ __u32 ctx_id;
+diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
+index 7e01f78f0417..9e302315e33d 100644
+--- a/kernel/power/Kconfig
++++ b/kernel/power/Kconfig
+@@ -187,7 +187,7 @@ config DPM_WATCHDOG
+ config DPM_WATCHDOG_TIMEOUT
+ int "Watchdog timeout in seconds"
+ range 1 120
+- default 12
++ default 60
+ depends on DPM_WATCHDOG
+
+ config PM_TRACE
+diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
+index c099b082cd02..bff0169e1ad8 100644
+--- a/kernel/printk/printk.c
++++ b/kernel/printk/printk.c
+@@ -484,11 +484,11 @@ int check_syslog_permissions(int type, bool from_file)
+ * already done the capabilities checks at open time.
+ */
+ if (from_file && type != SYSLOG_ACTION_OPEN)
+- return 0;
++ goto ok;
+
+ if (syslog_action_restricted(type)) {
+ if (capable(CAP_SYSLOG))
+- return 0;
++ goto ok;
+ /*
+ * For historical reasons, accept CAP_SYS_ADMIN too, with
+ * a warning.
+@@ -498,10 +498,11 @@ int check_syslog_permissions(int type, bool from_file)
+ "CAP_SYS_ADMIN but no CAP_SYSLOG "
+ "(deprecated).\n",
+ current->comm, task_pid_nr(current));
+- return 0;
++ goto ok;
+ }
+ return -EPERM;
+ }
++ok:
+ return security_syslog(type);
+ }
+
+@@ -1263,10 +1264,6 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
+ if (error)
+ goto out;
+
+- error = security_syslog(type);
+- if (error)
+- return error;
+-
+ switch (type) {
+ case SYSLOG_ACTION_CLOSE: /* Close log */
+ break;
+diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
+index d2612016de94..921691c5cb04 100644
+--- a/kernel/trace/trace.h
++++ b/kernel/trace/trace.h
+@@ -444,6 +444,7 @@ enum {
+
+ TRACE_CONTROL_BIT,
+
++ TRACE_BRANCH_BIT,
+ /*
+ * Abuse of the trace_recursion.
+ * As we need a way to maintain state if we are tracing the function
+@@ -1312,7 +1313,7 @@ void trace_event_init(void);
+ void trace_event_enum_update(struct trace_enum_map **map, int len);
+ #else
+ static inline void __init trace_event_init(void) { }
+-static inlin void trace_event_enum_update(struct trace_enum_map **map, int len) { }
++static inline void trace_event_enum_update(struct trace_enum_map **map, int len) { }
+ #endif
+
+ extern struct trace_iterator *tracepoint_print_iter;
+diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
+index 57cbf1efdd44..1879980f06c2 100644
+--- a/kernel/trace/trace_branch.c
++++ b/kernel/trace/trace_branch.c
+@@ -36,9 +36,12 @@ probe_likely_condition(struct ftrace_branch_data *f, int val, int expect)
+ struct trace_branch *entry;
+ struct ring_buffer *buffer;
+ unsigned long flags;
+- int cpu, pc;
++ int pc;
+ const char *p;
+
++ if (current->trace_recursion & TRACE_BRANCH_BIT)
++ return;
++
+ /*
+ * I would love to save just the ftrace_likely_data pointer, but
+ * this code can also be used by modules. Ugly things can happen
+@@ -49,10 +52,10 @@ probe_likely_condition(struct ftrace_branch_data *f, int val, int expect)
+ if (unlikely(!tr))
+ return;
+
+- local_irq_save(flags);
+- cpu = raw_smp_processor_id();
+- data = per_cpu_ptr(tr->trace_buffer.data, cpu);
+- if (atomic_inc_return(&data->disabled) != 1)
++ raw_local_irq_save(flags);
++ current->trace_recursion |= TRACE_BRANCH_BIT;
++ data = this_cpu_ptr(tr->trace_buffer.data);
++ if (atomic_read(&data->disabled))
+ goto out;
+
+ pc = preempt_count();
+@@ -81,8 +84,8 @@ probe_likely_condition(struct ftrace_branch_data *f, int val, int expect)
+ __buffer_unlock_commit(buffer, event);
+
+ out:
+- atomic_dec(&data->disabled);
+- local_irq_restore(flags);
++ current->trace_recursion &= ~TRACE_BRANCH_BIT;
++ raw_local_irq_restore(flags);
+ }
+
+ static inline
+diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
+index 7f2e97ce71a7..52adf02d7619 100644
+--- a/kernel/trace/trace_events_filter.c
++++ b/kernel/trace/trace_events_filter.c
+@@ -1056,6 +1056,9 @@ static void parse_init(struct filter_parse_state *ps,
+
+ static char infix_next(struct filter_parse_state *ps)
+ {
++ if (!ps->infix.cnt)
++ return 0;
++
+ ps->infix.cnt--;
+
+ return ps->infix.string[ps->infix.tail++];
+@@ -1071,6 +1074,9 @@ static char infix_peek(struct filter_parse_state *ps)
+
+ static void infix_advance(struct filter_parse_state *ps)
+ {
++ if (!ps->infix.cnt)
++ return;
++
+ ps->infix.cnt--;
+ ps->infix.tail++;
+ }
+@@ -1385,7 +1391,9 @@ static int check_preds(struct filter_parse_state *ps)
+ if (elt->op != OP_NOT)
+ cnt--;
+ n_normal_preds++;
+- WARN_ON_ONCE(cnt < 0);
++ /* all ops should have operands */
++ if (cnt < 0)
++ break;
+ }
+
+ if (cnt != 1 || !n_normal_preds || n_logical_preds >= n_normal_preds) {
+diff --git a/lib/bitmap.c b/lib/bitmap.c
+index 64c0926f5dd8..40162f87ea2d 100644
+--- a/lib/bitmap.c
++++ b/lib/bitmap.c
+@@ -506,12 +506,12 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
+ unsigned a, b;
+ int c, old_c, totaldigits;
+ const char __user __force *ubuf = (const char __user __force *)buf;
+- int exp_digit, in_range;
++ int at_start, in_range;
+
+ totaldigits = c = 0;
+ bitmap_zero(maskp, nmaskbits);
+ do {
+- exp_digit = 1;
++ at_start = 1;
+ in_range = 0;
+ a = b = 0;
+
+@@ -540,11 +540,10 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
+ break;
+
+ if (c == '-') {
+- if (exp_digit || in_range)
++ if (at_start || in_range)
+ return -EINVAL;
+ b = 0;
+ in_range = 1;
+- exp_digit = 1;
+ continue;
+ }
+
+@@ -554,16 +553,18 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
+ b = b * 10 + (c - '0');
+ if (!in_range)
+ a = b;
+- exp_digit = 0;
++ at_start = 0;
+ totaldigits++;
+ }
+ if (!(a <= b))
+ return -EINVAL;
+ if (b >= nmaskbits)
+ return -ERANGE;
+- while (a <= b) {
+- set_bit(a, maskp);
+- a++;
++ if (!at_start) {
++ while (a <= b) {
++ set_bit(a, maskp);
++ a++;
++ }
+ }
+ } while (buflen && c == ',');
+ return 0;
+diff --git a/mm/hugetlb.c b/mm/hugetlb.c
+index 271e4432734c..8c4c1f9f9a9a 100644
+--- a/mm/hugetlb.c
++++ b/mm/hugetlb.c
+@@ -40,6 +40,11 @@ int hugepages_treat_as_movable;
+ int hugetlb_max_hstate __read_mostly;
+ unsigned int default_hstate_idx;
+ struct hstate hstates[HUGE_MAX_HSTATE];
++/*
++ * Minimum page order among possible hugepage sizes, set to a proper value
++ * at boot time.
++ */
++static unsigned int minimum_order __read_mostly = UINT_MAX;
+
+ __initdata LIST_HEAD(huge_boot_pages);
+
+@@ -1188,19 +1193,13 @@ static void dissolve_free_huge_page(struct page *page)
+ */
+ void dissolve_free_huge_pages(unsigned long start_pfn, unsigned long end_pfn)
+ {
+- unsigned int order = 8 * sizeof(void *);
+ unsigned long pfn;
+- struct hstate *h;
+
+ if (!hugepages_supported())
+ return;
+
+- /* Set scan step to minimum hugepage size */
+- for_each_hstate(h)
+- if (order > huge_page_order(h))
+- order = huge_page_order(h);
+- VM_BUG_ON(!IS_ALIGNED(start_pfn, 1 << order));
+- for (pfn = start_pfn; pfn < end_pfn; pfn += 1 << order)
++ VM_BUG_ON(!IS_ALIGNED(start_pfn, 1 << minimum_order));
++ for (pfn = start_pfn; pfn < end_pfn; pfn += 1 << minimum_order)
+ dissolve_free_huge_page(pfn_to_page(pfn));
+ }
+
+@@ -1627,10 +1626,14 @@ static void __init hugetlb_init_hstates(void)
+ struct hstate *h;
+
+ for_each_hstate(h) {
++ if (minimum_order > huge_page_order(h))
++ minimum_order = huge_page_order(h);
++
+ /* oversize hugepages were init'ed in early boot */
+ if (!hstate_is_gigantic(h))
+ hugetlb_hstate_alloc_pages(h);
+ }
++ VM_BUG_ON(minimum_order == UINT_MAX);
+ }
+
+ static char * __init memfmt(char *buf, unsigned long n)
+diff --git a/mm/memory.c b/mm/memory.c
+index 22e037e3364e..2a9e09870c20 100644
+--- a/mm/memory.c
++++ b/mm/memory.c
+@@ -2669,6 +2669,10 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
+
+ pte_unmap(page_table);
+
++ /* File mapping without ->vm_ops ? */
++ if (vma->vm_flags & VM_SHARED)
++ return VM_FAULT_SIGBUS;
++
+ /* Check if we need to add a guard page to the stack */
+ if (check_stack_guard_page(vma, address) < 0)
+ return VM_FAULT_SIGSEGV;
+@@ -3097,6 +3101,9 @@ static int do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
+ - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
+
+ pte_unmap(page_table);
++ /* The VMA was not fully populated on mmap() or missing VM_DONTEXPAND */
++ if (!vma->vm_ops->fault)
++ return VM_FAULT_SIGBUS;
+ if (!(flags & FAULT_FLAG_WRITE))
+ return do_read_fault(mm, vma, address, pmd, pgoff, flags,
+ orig_pte);
+@@ -3242,13 +3249,12 @@ static int handle_pte_fault(struct mm_struct *mm,
+ barrier();
+ if (!pte_present(entry)) {
+ if (pte_none(entry)) {
+- if (vma->vm_ops) {
+- if (likely(vma->vm_ops->fault))
+- return do_fault(mm, vma, address, pte,
+- pmd, flags, entry);
+- }
+- return do_anonymous_page(mm, vma, address,
+- pte, pmd, flags);
++ if (vma->vm_ops)
++ return do_fault(mm, vma, address, pte, pmd,
++ flags, entry);
++
++ return do_anonymous_page(mm, vma, address, pte, pmd,
++ flags);
+ }
+ return do_swap_page(mm, vma, address,
+ pte, pmd, flags, entry);
+diff --git a/net/9p/client.c b/net/9p/client.c
+index 6f4c4c88db84..81925b923318 100644
+--- a/net/9p/client.c
++++ b/net/9p/client.c
+@@ -843,7 +843,8 @@ static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type,
+ if (err < 0) {
+ if (err == -EIO)
+ c->status = Disconnected;
+- goto reterr;
++ if (err != -ERESTARTSYS)
++ goto reterr;
+ }
+ if (req->status == REQ_STATUS_ERROR) {
+ p9_debug(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
+@@ -1647,6 +1648,7 @@ p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err)
+ if (*err) {
+ trace_9p_protocol_dump(clnt, req->rc);
+ p9_free_req(clnt, req);
++ break;
+ }
+
+ p9_debug(P9_DEBUG_9P, "<<< RWRITE count %d\n", count);
+diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
+index 56f9edbf3d05..e11a5cfda4b1 100644
+--- a/net/bluetooth/hci_sock.c
++++ b/net/bluetooth/hci_sock.c
+@@ -741,10 +741,11 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
+ goto done;
+ }
+
+- if (test_bit(HCI_UP, &hdev->flags) ||
+- test_bit(HCI_INIT, &hdev->flags) ||
++ if (test_bit(HCI_INIT, &hdev->flags) ||
+ hci_dev_test_flag(hdev, HCI_SETUP) ||
+- hci_dev_test_flag(hdev, HCI_CONFIG)) {
++ hci_dev_test_flag(hdev, HCI_CONFIG) ||
++ (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) &&
++ test_bit(HCI_UP, &hdev->flags))) {
+ err = -EBUSY;
+ hci_dev_put(hdev);
+ goto done;
+@@ -760,10 +761,21 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
+
+ err = hci_dev_open(hdev->id);
+ if (err) {
+- hci_dev_clear_flag(hdev, HCI_USER_CHANNEL);
+- mgmt_index_added(hdev);
+- hci_dev_put(hdev);
+- goto done;
++ if (err == -EALREADY) {
++ /* In case the transport is already up and
++ * running, clear the error here.
++ *
++ * This can happen when opening an user
++ * channel and HCI_AUTO_OFF grace period
++ * is still active.
++ */
++ err = 0;
++ } else {
++ hci_dev_clear_flag(hdev, HCI_USER_CHANNEL);
++ mgmt_index_added(hdev);
++ hci_dev_put(hdev);
++ goto done;
++ }
+ }
+
+ atomic_inc(&hdev->promisc);
+diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
+index 15796696d64e..4a3125836b64 100644
+--- a/net/ceph/osdmap.c
++++ b/net/ceph/osdmap.c
+@@ -89,7 +89,7 @@ static int crush_decode_tree_bucket(void **p, void *end,
+ {
+ int j;
+ dout("crush_decode_tree_bucket %p to %p\n", *p, end);
+- ceph_decode_32_safe(p, end, b->num_nodes, bad);
++ ceph_decode_8_safe(p, end, b->num_nodes, bad);
+ b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS);
+ if (b->node_weights == NULL)
+ return -ENOMEM;
+diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
+index b60c65f70346..627a2537634e 100644
+--- a/net/ieee802154/socket.c
++++ b/net/ieee802154/socket.c
+@@ -739,6 +739,12 @@ static int dgram_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
+ sock_recv_ts_and_drops(msg, sk, skb);
+
+ if (saddr) {
++ /* Clear the implicit padding in struct sockaddr_ieee802154
++ * (16 bits between 'family' and 'addr') and in struct
++ * ieee802154_addr_sa (16 bits at the end of the structure).
++ */
++ memset(saddr, 0, sizeof(*saddr));
++
+ saddr->family = AF_IEEE802154;
+ ieee802154_addr_to_sa(&saddr->addr, &mac_cb(skb)->source);
+ *addr_len = sizeof(*saddr);
+diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
+index ff347a0eebd4..f06d42267306 100644
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -3356,6 +3356,7 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
+ /* Update CSA counters */
+ if (sdata->vif.csa_active &&
+ (sdata->vif.type == NL80211_IFTYPE_AP ||
++ sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
+ sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
+ params->n_csa_offsets) {
+ int i;
+diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
+index bfef1b215050..a9c9d961f039 100644
+--- a/net/mac80211/ibss.c
++++ b/net/mac80211/ibss.c
+@@ -146,6 +146,7 @@ ieee80211_ibss_build_presp(struct ieee80211_sub_if_data *sdata,
+ csa_settings->chandef.chan->center_freq);
+ presp->csa_counter_offsets[0] = (pos - presp->head);
+ *pos++ = csa_settings->count;
++ presp->csa_current_counter = csa_settings->count;
+ }
+
+ /* put the remaining rates in WLAN_EID_EXT_SUPP_RATES */
+diff --git a/net/mac80211/main.c b/net/mac80211/main.c
+index df3051d96aff..e86daed83c6f 100644
+--- a/net/mac80211/main.c
++++ b/net/mac80211/main.c
+@@ -249,6 +249,7 @@ static void ieee80211_restart_work(struct work_struct *work)
+ {
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local, restart_work);
++ struct ieee80211_sub_if_data *sdata;
+
+ /* wait for scan work complete */
+ flush_workqueue(local->workqueue);
+@@ -257,6 +258,8 @@ static void ieee80211_restart_work(struct work_struct *work)
+ "%s called with hardware scan in progress\n", __func__);
+
+ rtnl_lock();
++ list_for_each_entry(sdata, &local->interfaces, list)
++ flush_delayed_work(&sdata->dec_tailroom_needed_wk);
+ ieee80211_scan_cancel(local);
+ ieee80211_reconfig(local);
+ rtnl_unlock();
+diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
+index d4684242e78b..817098add1d6 100644
+--- a/net/mac80211/mesh.c
++++ b/net/mac80211/mesh.c
+@@ -680,6 +680,7 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh)
+ *pos++ = 0x0;
+ *pos++ = ieee80211_frequency_to_channel(
+ csa->settings.chandef.chan->center_freq);
++ bcn->csa_current_counter = csa->settings.count;
+ bcn->csa_counter_offsets[0] = hdr_len + 6;
+ *pos++ = csa->settings.count;
+ *pos++ = WLAN_EID_CHAN_SWITCH_PARAM;
+diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
+index 9dd0ea8db463..28504dfd3dad 100644
+--- a/net/sunrpc/backchannel_rqst.c
++++ b/net/sunrpc/backchannel_rqst.c
+@@ -60,7 +60,7 @@ static void xprt_free_allocation(struct rpc_rqst *req)
+
+ dprintk("RPC: free allocations for req= %p\n", req);
+ WARN_ON_ONCE(test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));
+- xbufp = &req->rq_private_buf;
++ xbufp = &req->rq_rcv_buf;
+ free_page((unsigned long)xbufp->head[0].iov_base);
+ xbufp = &req->rq_snd_buf;
+ free_page((unsigned long)xbufp->head[0].iov_base);
+diff --git a/net/wireless/util.c b/net/wireless/util.c
+index 70051ab52f4f..7e4e3fffe7ce 100644
+--- a/net/wireless/util.c
++++ b/net/wireless/util.c
+@@ -944,7 +944,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
+ ntype == NL80211_IFTYPE_P2P_CLIENT))
+ return -EBUSY;
+
+- if (ntype != otype && netif_running(dev)) {
++ if (ntype != otype) {
+ dev->ieee80211_ptr->use_4addr = false;
+ dev->ieee80211_ptr->mesh_id_up_len = 0;
+ wdev_lock(dev->ieee80211_ptr);
+diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h
+index 8965d1bb8811..125d6402f64f 100644
+--- a/samples/trace_events/trace-events-sample.h
++++ b/samples/trace_events/trace-events-sample.h
+@@ -168,7 +168,10 @@
+ *
+ * For __dynamic_array(int, foo, bar) use __get_dynamic_array(foo)
+ * Use __get_dynamic_array_len(foo) to get the length of the array
+- * saved.
++ * saved. Note, __get_dynamic_array_len() returns the total allocated
++ * length of the dynamic array; __print_array() expects the second
++ * parameter to be the number of elements. To get that, the array length
++ * needs to be divided by the element size.
+ *
+ * For __string(foo, bar) use __get_str(foo)
+ *
+@@ -288,7 +291,7 @@ TRACE_EVENT(foo_bar,
+ * This prints out the array that is defined by __array in a nice format.
+ */
+ __print_array(__get_dynamic_array(list),
+- __get_dynamic_array_len(list),
++ __get_dynamic_array_len(list) / sizeof(int),
+ sizeof(int)),
+ __get_str(str), __get_bitmask(cpus))
+ );
+diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
+index 10f994307a04..582091498819 100644
+--- a/security/integrity/evm/evm_main.c
++++ b/security/integrity/evm/evm_main.c
+@@ -296,6 +296,17 @@ static int evm_protect_xattr(struct dentry *dentry, const char *xattr_name,
+ iint = integrity_iint_find(d_backing_inode(dentry));
+ if (iint && (iint->flags & IMA_NEW_FILE))
+ return 0;
++
++ /* exception for pseudo filesystems */
++ if (dentry->d_inode->i_sb->s_magic == TMPFS_MAGIC
++ || dentry->d_inode->i_sb->s_magic == SYSFS_MAGIC)
++ return 0;
++
++ integrity_audit_msg(AUDIT_INTEGRITY_METADATA,
++ dentry->d_inode, dentry->d_name.name,
++ "update_metadata",
++ integrity_status_msg[evm_status],
++ -EPERM, 0);
+ }
+ out:
+ if (evm_status != INTEGRITY_PASS)
+diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
+index 8ee997dff139..fc56d4dfa954 100644
+--- a/security/integrity/ima/ima.h
++++ b/security/integrity/ima/ima.h
+@@ -106,7 +106,7 @@ void ima_add_violation(struct file *file, const unsigned char *filename,
+ const char *op, const char *cause);
+ int ima_init_crypto(void);
+ void ima_putc(struct seq_file *m, void *data, int datalen);
+-void ima_print_digest(struct seq_file *m, u8 *digest, int size);
++void ima_print_digest(struct seq_file *m, u8 *digest, u32 size);
+ struct ima_template_desc *ima_template_desc_current(void);
+ int ima_init_template(void);
+
+diff --git a/security/integrity/ima/ima_fs.c b/security/integrity/ima/ima_fs.c
+index 461215e5fd31..816d175da79a 100644
+--- a/security/integrity/ima/ima_fs.c
++++ b/security/integrity/ima/ima_fs.c
+@@ -190,9 +190,9 @@ static const struct file_operations ima_measurements_ops = {
+ .release = seq_release,
+ };
+
+-void ima_print_digest(struct seq_file *m, u8 *digest, int size)
++void ima_print_digest(struct seq_file *m, u8 *digest, u32 size)
+ {
+- int i;
++ u32 i;
+
+ for (i = 0; i < size; i++)
+ seq_printf(m, "%02x", *(digest + i));
+diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
+index d1eefb9d65fb..3997e206f82d 100644
+--- a/security/integrity/ima/ima_policy.c
++++ b/security/integrity/ima/ima_policy.c
+@@ -27,6 +27,8 @@
+ #define IMA_UID 0x0008
+ #define IMA_FOWNER 0x0010
+ #define IMA_FSUUID 0x0020
++#define IMA_INMASK 0x0040
++#define IMA_EUID 0x0080
+
+ #define UNKNOWN 0
+ #define MEASURE 0x0001 /* same as IMA_MEASURE */
+@@ -42,6 +44,8 @@ enum lsm_rule_types { LSM_OBJ_USER, LSM_OBJ_ROLE, LSM_OBJ_TYPE,
+ LSM_SUBJ_USER, LSM_SUBJ_ROLE, LSM_SUBJ_TYPE
+ };
+
++enum policy_types { ORIGINAL_TCB = 1, DEFAULT_TCB };
++
+ struct ima_rule_entry {
+ struct list_head list;
+ int action;
+@@ -70,7 +74,7 @@ struct ima_rule_entry {
+ * normal users can easily run the machine out of memory simply building
+ * and running executables.
+ */
+-static struct ima_rule_entry default_rules[] = {
++static struct ima_rule_entry dont_measure_rules[] = {
+ {.action = DONT_MEASURE, .fsmagic = PROC_SUPER_MAGIC, .flags = IMA_FSMAGIC},
+ {.action = DONT_MEASURE, .fsmagic = SYSFS_MAGIC, .flags = IMA_FSMAGIC},
+ {.action = DONT_MEASURE, .fsmagic = DEBUGFS_MAGIC, .flags = IMA_FSMAGIC},
+@@ -79,12 +83,31 @@ static struct ima_rule_entry default_rules[] = {
+ {.action = DONT_MEASURE, .fsmagic = BINFMTFS_MAGIC, .flags = IMA_FSMAGIC},
+ {.action = DONT_MEASURE, .fsmagic = SECURITYFS_MAGIC, .flags = IMA_FSMAGIC},
+ {.action = DONT_MEASURE, .fsmagic = SELINUX_MAGIC, .flags = IMA_FSMAGIC},
++ {.action = DONT_MEASURE, .fsmagic = CGROUP_SUPER_MAGIC,
++ .flags = IMA_FSMAGIC},
++ {.action = DONT_MEASURE, .fsmagic = NSFS_MAGIC, .flags = IMA_FSMAGIC}
++};
++
++static struct ima_rule_entry original_measurement_rules[] = {
+ {.action = MEASURE, .func = MMAP_CHECK, .mask = MAY_EXEC,
+ .flags = IMA_FUNC | IMA_MASK},
+ {.action = MEASURE, .func = BPRM_CHECK, .mask = MAY_EXEC,
+ .flags = IMA_FUNC | IMA_MASK},
+- {.action = MEASURE, .func = FILE_CHECK, .mask = MAY_READ, .uid = GLOBAL_ROOT_UID,
+- .flags = IMA_FUNC | IMA_MASK | IMA_UID},
++ {.action = MEASURE, .func = FILE_CHECK, .mask = MAY_READ,
++ .uid = GLOBAL_ROOT_UID, .flags = IMA_FUNC | IMA_MASK | IMA_UID},
++ {.action = MEASURE, .func = MODULE_CHECK, .flags = IMA_FUNC},
++ {.action = MEASURE, .func = FIRMWARE_CHECK, .flags = IMA_FUNC},
++};
++
++static struct ima_rule_entry default_measurement_rules[] = {
++ {.action = MEASURE, .func = MMAP_CHECK, .mask = MAY_EXEC,
++ .flags = IMA_FUNC | IMA_MASK},
++ {.action = MEASURE, .func = BPRM_CHECK, .mask = MAY_EXEC,
++ .flags = IMA_FUNC | IMA_MASK},
++ {.action = MEASURE, .func = FILE_CHECK, .mask = MAY_READ,
++ .uid = GLOBAL_ROOT_UID, .flags = IMA_FUNC | IMA_INMASK | IMA_EUID},
++ {.action = MEASURE, .func = FILE_CHECK, .mask = MAY_READ,
++ .uid = GLOBAL_ROOT_UID, .flags = IMA_FUNC | IMA_INMASK | IMA_UID},
+ {.action = MEASURE, .func = MODULE_CHECK, .flags = IMA_FUNC},
+ {.action = MEASURE, .func = FIRMWARE_CHECK, .flags = IMA_FUNC},
+ };
+@@ -99,6 +122,7 @@ static struct ima_rule_entry default_appraise_rules[] = {
+ {.action = DONT_APPRAISE, .fsmagic = BINFMTFS_MAGIC, .flags = IMA_FSMAGIC},
+ {.action = DONT_APPRAISE, .fsmagic = SECURITYFS_MAGIC, .flags = IMA_FSMAGIC},
+ {.action = DONT_APPRAISE, .fsmagic = SELINUX_MAGIC, .flags = IMA_FSMAGIC},
++ {.action = DONT_APPRAISE, .fsmagic = NSFS_MAGIC, .flags = IMA_FSMAGIC},
+ {.action = DONT_APPRAISE, .fsmagic = CGROUP_SUPER_MAGIC, .flags = IMA_FSMAGIC},
+ #ifndef CONFIG_IMA_APPRAISE_SIGNED_INIT
+ {.action = APPRAISE, .fowner = GLOBAL_ROOT_UID, .flags = IMA_FOWNER},
+@@ -115,14 +139,29 @@ static struct list_head *ima_rules;
+
+ static DEFINE_MUTEX(ima_rules_mutex);
+
+-static bool ima_use_tcb __initdata;
++static int ima_policy __initdata;
+ static int __init default_measure_policy_setup(char *str)
+ {
+- ima_use_tcb = 1;
++ if (ima_policy)
++ return 1;
++
++ ima_policy = ORIGINAL_TCB;
+ return 1;
+ }
+ __setup("ima_tcb", default_measure_policy_setup);
+
++static int __init policy_setup(char *str)
++{
++ if (ima_policy)
++ return 1;
++
++ if (strcmp(str, "tcb") == 0)
++ ima_policy = DEFAULT_TCB;
++
++ return 1;
++}
++__setup("ima_policy=", policy_setup);
++
+ static bool ima_use_appraise_tcb __initdata;
+ static int __init default_appraise_policy_setup(char *str)
+ {
+@@ -182,6 +221,9 @@ static bool ima_match_rules(struct ima_rule_entry *rule,
+ if ((rule->flags & IMA_MASK) &&
+ (rule->mask != mask && func != POST_SETATTR))
+ return false;
++ if ((rule->flags & IMA_INMASK) &&
++ (!(rule->mask & mask) && func != POST_SETATTR))
++ return false;
+ if ((rule->flags & IMA_FSMAGIC)
+ && rule->fsmagic != inode->i_sb->s_magic)
+ return false;
+@@ -190,6 +232,16 @@ static bool ima_match_rules(struct ima_rule_entry *rule,
+ return false;
+ if ((rule->flags & IMA_UID) && !uid_eq(rule->uid, cred->uid))
+ return false;
++ if (rule->flags & IMA_EUID) {
++ if (has_capability_noaudit(current, CAP_SETUID)) {
++ if (!uid_eq(rule->uid, cred->euid)
++ && !uid_eq(rule->uid, cred->suid)
++ && !uid_eq(rule->uid, cred->uid))
++ return false;
++ } else if (!uid_eq(rule->uid, cred->euid))
++ return false;
++ }
++
+ if ((rule->flags & IMA_FOWNER) && !uid_eq(rule->fowner, inode->i_uid))
+ return false;
+ for (i = 0; i < MAX_LSM_RULES; i++) {
+@@ -333,21 +385,31 @@ void __init ima_init_policy(void)
+ {
+ int i, measure_entries, appraise_entries;
+
+- /* if !ima_use_tcb set entries = 0 so we load NO default rules */
+- measure_entries = ima_use_tcb ? ARRAY_SIZE(default_rules) : 0;
++ /* if !ima_policy set entries = 0 so we load NO default rules */
++ measure_entries = ima_policy ? ARRAY_SIZE(dont_measure_rules) : 0;
+ appraise_entries = ima_use_appraise_tcb ?
+ ARRAY_SIZE(default_appraise_rules) : 0;
+
+- for (i = 0; i < measure_entries + appraise_entries; i++) {
+- if (i < measure_entries)
+- list_add_tail(&default_rules[i].list,
+- &ima_default_rules);
+- else {
+- int j = i - measure_entries;
++ for (i = 0; i < measure_entries; i++)
++ list_add_tail(&dont_measure_rules[i].list, &ima_default_rules);
+
+- list_add_tail(&default_appraise_rules[j].list,
++ switch (ima_policy) {
++ case ORIGINAL_TCB:
++ for (i = 0; i < ARRAY_SIZE(original_measurement_rules); i++)
++ list_add_tail(&original_measurement_rules[i].list,
+ &ima_default_rules);
+- }
++ break;
++ case DEFAULT_TCB:
++ for (i = 0; i < ARRAY_SIZE(default_measurement_rules); i++)
++ list_add_tail(&default_measurement_rules[i].list,
++ &ima_default_rules);
++ default:
++ break;
++ }
++
++ for (i = 0; i < appraise_entries; i++) {
++ list_add_tail(&default_appraise_rules[i].list,
++ &ima_default_rules);
+ }
+
+ ima_rules = &ima_default_rules;
+@@ -373,7 +435,8 @@ enum {
+ Opt_audit,
+ Opt_obj_user, Opt_obj_role, Opt_obj_type,
+ Opt_subj_user, Opt_subj_role, Opt_subj_type,
+- Opt_func, Opt_mask, Opt_fsmagic, Opt_uid, Opt_fowner,
++ Opt_func, Opt_mask, Opt_fsmagic,
++ Opt_uid, Opt_euid, Opt_fowner,
+ Opt_appraise_type, Opt_fsuuid, Opt_permit_directio
+ };
+
+@@ -394,6 +457,7 @@ static match_table_t policy_tokens = {
+ {Opt_fsmagic, "fsmagic=%s"},
+ {Opt_fsuuid, "fsuuid=%s"},
+ {Opt_uid, "uid=%s"},
++ {Opt_euid, "euid=%s"},
+ {Opt_fowner, "fowner=%s"},
+ {Opt_appraise_type, "appraise_type=%s"},
+ {Opt_permit_directio, "permit_directio"},
+@@ -435,6 +499,7 @@ static void ima_log_string(struct audit_buffer *ab, char *key, char *value)
+ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry)
+ {
+ struct audit_buffer *ab;
++ char *from;
+ char *p;
+ int result = 0;
+
+@@ -525,18 +590,23 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry)
+ if (entry->mask)
+ result = -EINVAL;
+
+- if ((strcmp(args[0].from, "MAY_EXEC")) == 0)
++ from = args[0].from;
++ if (*from == '^')
++ from++;
++
++ if ((strcmp(from, "MAY_EXEC")) == 0)
+ entry->mask = MAY_EXEC;
+- else if (strcmp(args[0].from, "MAY_WRITE") == 0)
++ else if (strcmp(from, "MAY_WRITE") == 0)
+ entry->mask = MAY_WRITE;
+- else if (strcmp(args[0].from, "MAY_READ") == 0)
++ else if (strcmp(from, "MAY_READ") == 0)
+ entry->mask = MAY_READ;
+- else if (strcmp(args[0].from, "MAY_APPEND") == 0)
++ else if (strcmp(from, "MAY_APPEND") == 0)
+ entry->mask = MAY_APPEND;
+ else
+ result = -EINVAL;
+ if (!result)
+- entry->flags |= IMA_MASK;
++ entry->flags |= (*args[0].from == '^')
++ ? IMA_INMASK : IMA_MASK;
+ break;
+ case Opt_fsmagic:
+ ima_log_string(ab, "fsmagic", args[0].from);
+@@ -566,6 +636,9 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry)
+ break;
+ case Opt_uid:
+ ima_log_string(ab, "uid", args[0].from);
++ case Opt_euid:
++ if (token == Opt_euid)
++ ima_log_string(ab, "euid", args[0].from);
+
+ if (uid_valid(entry->uid)) {
+ result = -EINVAL;
+@@ -574,11 +647,14 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry)
+
+ result = kstrtoul(args[0].from, 10, &lnum);
+ if (!result) {
+- entry->uid = make_kuid(current_user_ns(), (uid_t)lnum);
+- if (!uid_valid(entry->uid) || (((uid_t)lnum) != lnum))
++ entry->uid = make_kuid(current_user_ns(),
++ (uid_t) lnum);
++ if (!uid_valid(entry->uid) ||
++ (uid_t)lnum != lnum)
+ result = -EINVAL;
+ else
+- entry->flags |= IMA_UID;
++ entry->flags |= (token == Opt_uid)
++ ? IMA_UID : IMA_EUID;
+ }
+ break;
+ case Opt_fowner:
+diff --git a/security/integrity/ima/ima_template_lib.c b/security/integrity/ima/ima_template_lib.c
+index bcfc36cbde6a..61fbd0c0d95c 100644
+--- a/security/integrity/ima/ima_template_lib.c
++++ b/security/integrity/ima/ima_template_lib.c
+@@ -70,7 +70,8 @@ static void ima_show_template_data_ascii(struct seq_file *m,
+ enum data_formats datafmt,
+ struct ima_field_data *field_data)
+ {
+- u8 *buf_ptr = field_data->data, buflen = field_data->len;
++ u8 *buf_ptr = field_data->data;
++ u32 buflen = field_data->len;
+
+ switch (datafmt) {
+ case DATA_FMT_DIGEST_WITH_ALGO:
+diff --git a/security/keys/keyring.c b/security/keys/keyring.c
+index e72548b5897e..d33437007ad2 100644
+--- a/security/keys/keyring.c
++++ b/security/keys/keyring.c
+@@ -1181,9 +1181,11 @@ void __key_link_end(struct key *keyring,
+ if (index_key->type == &key_type_keyring)
+ up_write(&keyring_serialise_link_sem);
+
+- if (edit && !edit->dead_leaf) {
+- key_payload_reserve(keyring,
+- keyring->datalen - KEYQUOTA_LINK_BYTES);
++ if (edit) {
++ if (!edit->dead_leaf) {
++ key_payload_reserve(keyring,
++ keyring->datalen - KEYQUOTA_LINK_BYTES);
++ }
+ assoc_array_cancel_edit(edit);
+ }
+ up_write(&keyring->sem);
+diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
+index 212070e1de1a..7f8d7f19e044 100644
+--- a/security/selinux/hooks.c
++++ b/security/selinux/hooks.c
+@@ -3288,7 +3288,8 @@ static int file_map_prot_check(struct file *file, unsigned long prot, int shared
+ int rc = 0;
+
+ if (default_noexec &&
+- (prot & PROT_EXEC) && (!file || (!shared && (prot & PROT_WRITE)))) {
++ (prot & PROT_EXEC) && (!file || IS_PRIVATE(file_inode(file)) ||
++ (!shared && (prot & PROT_WRITE)))) {
+ /*
+ * We are making executable an anonymous mapping or a
+ * private file mapping that will also be writable.
+diff --git a/security/selinux/ss/ebitmap.c b/security/selinux/ss/ebitmap.c
+index afe6a269ec17..57644b1dc42e 100644
+--- a/security/selinux/ss/ebitmap.c
++++ b/security/selinux/ss/ebitmap.c
+@@ -153,6 +153,12 @@ int ebitmap_netlbl_import(struct ebitmap *ebmap,
+ if (offset == (u32)-1)
+ return 0;
+
++ /* don't waste ebitmap space if the netlabel bitmap is empty */
++ if (bitmap == 0) {
++ offset += EBITMAP_UNIT_SIZE;
++ continue;
++ }
++
+ if (e_iter == NULL ||
+ offset >= e_iter->startbit + EBITMAP_SIZE) {
+ e_prev = e_iter;
+diff --git a/sound/soc/codecs/max98925.c b/sound/soc/codecs/max98925.c
+index 9b5a17de4690..aad664225dc3 100644
+--- a/sound/soc/codecs/max98925.c
++++ b/sound/soc/codecs/max98925.c
+@@ -346,7 +346,7 @@ static int max98925_dai_set_fmt(struct snd_soc_dai *codec_dai,
+ }
+
+ regmap_update_bits(max98925->regmap, MAX98925_FORMAT,
+- M98925_DAI_BCI_MASK, invert);
++ M98925_DAI_BCI_MASK | M98925_DAI_WCI_MASK, invert);
+ return 0;
+ }
+
+diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
+index be4d741c45ba..2ee44abd56a6 100644
+--- a/sound/soc/codecs/rt5645.c
++++ b/sound/soc/codecs/rt5645.c
+@@ -2837,6 +2837,8 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
+ }
+ }
+
++ INIT_DELAYED_WORK(&rt5645->jack_detect_work, rt5645_jack_detect_work);
++
+ if (rt5645->i2c->irq) {
+ ret = request_threaded_irq(rt5645->i2c->irq, NULL, rt5645_irq,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING
+@@ -2855,8 +2857,6 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
+ dev_err(&i2c->dev, "Fail gpio_direction hp_det_gpio\n");
+ }
+
+- INIT_DELAYED_WORK(&rt5645->jack_detect_work, rt5645_jack_detect_work);
+-
+ return snd_soc_register_codec(&i2c->dev, &soc_codec_dev_rt5645,
+ rt5645_dai, ARRAY_SIZE(rt5645_dai));
+ }
+diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
+index dfb4ff5cc9ea..18558595ba72 100644
+--- a/sound/soc/codecs/tas2552.c
++++ b/sound/soc/codecs/tas2552.c
+@@ -120,6 +120,9 @@ static void tas2552_sw_shutdown(struct tas2552_data *tas_data, int sw_shutdown)
+ {
+ u8 cfg1_reg;
+
++ if (!tas_data->codec)
++ return;
++
+ if (sw_shutdown)
+ cfg1_reg = 0;
+ else
+@@ -335,7 +338,6 @@ static DECLARE_TLV_DB_SCALE(dac_tlv, -7, 100, 24);
+ static const struct snd_kcontrol_new tas2552_snd_controls[] = {
+ SOC_SINGLE_TLV("Speaker Driver Playback Volume",
+ TAS2552_PGA_GAIN, 0, 0x1f, 1, dac_tlv),
+- SOC_DAPM_SINGLE("Playback AMP", SND_SOC_NOPM, 0, 1, 0),
+ };
+
+ static const struct reg_default tas2552_init_regs[] = {
+diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c
+index 0c6d1bc0526e..d476221dba51 100644
+--- a/sound/soc/codecs/wm5102.c
++++ b/sound/soc/codecs/wm5102.c
+@@ -42,7 +42,7 @@ struct wm5102_priv {
+ static DECLARE_TLV_DB_SCALE(ana_tlv, 0, 100, 0);
+ static DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
+ static DECLARE_TLV_DB_SCALE(digital_tlv, -6400, 50, 0);
+-static DECLARE_TLV_DB_SCALE(noise_tlv, 0, 600, 0);
++static DECLARE_TLV_DB_SCALE(noise_tlv, -13200, 600, 0);
+ static DECLARE_TLV_DB_SCALE(ng_tlv, -10200, 600, 0);
+
+ static const struct wm_adsp_region wm5102_dsp1_regions[] = {
+diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c
+index fbaeddb3e903..3ee6cfd0578b 100644
+--- a/sound/soc/codecs/wm5110.c
++++ b/sound/soc/codecs/wm5110.c
+@@ -167,7 +167,7 @@ static int wm5110_sysclk_ev(struct snd_soc_dapm_widget *w,
+ static DECLARE_TLV_DB_SCALE(ana_tlv, 0, 100, 0);
+ static DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
+ static DECLARE_TLV_DB_SCALE(digital_tlv, -6400, 50, 0);
+-static DECLARE_TLV_DB_SCALE(noise_tlv, 0, 600, 0);
++static DECLARE_TLV_DB_SCALE(noise_tlv, -13200, 600, 0);
+ static DECLARE_TLV_DB_SCALE(ng_tlv, -10200, 600, 0);
+
+ #define WM5110_NG_SRC(name, base) \
+diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c
+index ada9ac1ba2c6..51171e457fa4 100644
+--- a/sound/soc/codecs/wm8737.c
++++ b/sound/soc/codecs/wm8737.c
+@@ -483,7 +483,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
+
+ /* Fast VMID ramp at 2*2.5k */
+ snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
+- WM8737_VMIDSEL_MASK, 0x4);
++ WM8737_VMIDSEL_MASK,
++ 2 << WM8737_VMIDSEL_SHIFT);
+
+ /* Bring VMID up */
+ snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT,
+@@ -497,7 +498,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
+
+ /* VMID at 2*300k */
+ snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
+- WM8737_VMIDSEL_MASK, 2);
++ WM8737_VMIDSEL_MASK,
++ 1 << WM8737_VMIDSEL_SHIFT);
+
+ break;
+
+diff --git a/sound/soc/codecs/wm8903.h b/sound/soc/codecs/wm8903.h
+index db949311c0f2..0bb4a647755d 100644
+--- a/sound/soc/codecs/wm8903.h
++++ b/sound/soc/codecs/wm8903.h
+@@ -172,7 +172,7 @@ extern int wm8903_mic_detect(struct snd_soc_codec *codec,
+ #define WM8903_VMID_BUF_ENA_WIDTH 1 /* VMID_BUF_ENA */
+
+ #define WM8903_VMID_RES_50K 2
+-#define WM8903_VMID_RES_250K 3
++#define WM8903_VMID_RES_250K 4
+ #define WM8903_VMID_RES_5K 6
+
+ /*
+diff --git a/sound/soc/codecs/wm8955.c b/sound/soc/codecs/wm8955.c
+index 00bec915d652..03e04bf6c5ba 100644
+--- a/sound/soc/codecs/wm8955.c
++++ b/sound/soc/codecs/wm8955.c
+@@ -298,7 +298,7 @@ static int wm8955_configure_clocking(struct snd_soc_codec *codec)
+ snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
+ WM8955_K_17_9_MASK,
+ (pll.k >> 9) & WM8955_K_17_9_MASK);
+- snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
++ snd_soc_update_bits(codec, WM8955_PLL_CONTROL_3,
+ WM8955_K_8_0_MASK,
+ pll.k & WM8955_K_8_0_MASK);
+ if (pll.k)
+diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
+index e97a7615df85..8d7f63253440 100644
+--- a/sound/soc/codecs/wm8960.c
++++ b/sound/soc/codecs/wm8960.c
+@@ -245,7 +245,7 @@ SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
+ SOC_ENUM("ADC Polarity", wm8960_enum[0]),
+ SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
+
+-SOC_ENUM("DAC Polarity", wm8960_enum[2]),
++SOC_ENUM("DAC Polarity", wm8960_enum[1]),
+ SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
+ wm8960_get_deemph, wm8960_put_deemph),
+
+diff --git a/sound/soc/codecs/wm8997.c b/sound/soc/codecs/wm8997.c
+index a4d11770630c..e7c81baefe66 100644
+--- a/sound/soc/codecs/wm8997.c
++++ b/sound/soc/codecs/wm8997.c
+@@ -40,7 +40,7 @@ struct wm8997_priv {
+ static DECLARE_TLV_DB_SCALE(ana_tlv, 0, 100, 0);
+ static DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
+ static DECLARE_TLV_DB_SCALE(digital_tlv, -6400, 50, 0);
+-static DECLARE_TLV_DB_SCALE(noise_tlv, 0, 600, 0);
++static DECLARE_TLV_DB_SCALE(noise_tlv, -13200, 600, 0);
+ static DECLARE_TLV_DB_SCALE(ng_tlv, -10200, 600, 0);
+
+ static const struct reg_default wm8997_sysclk_reva_patch[] = {
+diff --git a/sound/soc/fsl/imx-wm8962.c b/sound/soc/fsl/imx-wm8962.c
+index cd146d4fa805..b38b98cae855 100644
+--- a/sound/soc/fsl/imx-wm8962.c
++++ b/sound/soc/fsl/imx-wm8962.c
+@@ -190,7 +190,7 @@ static int imx_wm8962_probe(struct platform_device *pdev)
+ dev_err(&pdev->dev, "audmux internal port setup failed\n");
+ return ret;
+ }
+- imx_audmux_v2_configure_port(ext_port,
++ ret = imx_audmux_v2_configure_port(ext_port,
+ IMX_AUDMUX_V2_PTCR_SYN,
+ IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
+ if (ret) {
+diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
+index 6768e4f7d7d0..30d0109703a9 100644
+--- a/sound/soc/omap/Kconfig
++++ b/sound/soc/omap/Kconfig
+@@ -100,12 +100,13 @@ config SND_OMAP_SOC_OMAP_TWL4030
+
+ config SND_OMAP_SOC_OMAP_ABE_TWL6040
+ tristate "SoC Audio support for OMAP boards using ABE and twl6040 codec"
+- depends on TWL6040_CORE && SND_OMAP_SOC && (ARCH_OMAP4 || SOC_OMAP5 || COMPILE_TEST)
++ depends on TWL6040_CORE && SND_OMAP_SOC
++ depends on ARCH_OMAP4 || (SOC_OMAP5 && MFD_PALMAS) || COMPILE_TEST
+ select SND_OMAP_SOC_DMIC
+ select SND_OMAP_SOC_MCPDM
+ select SND_SOC_TWL6040
+ select SND_SOC_DMIC
+- select COMMON_CLK_PALMAS if MFD_PALMAS
++ select COMMON_CLK_PALMAS if (SOC_OMAP5 && MFD_PALMAS)
+ help
+ Say Y if you want to add support for SoC audio on OMAP boards using
+ ABE and twl6040 codec. This driver currently supports:
+diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
+index 5f58e4f1bca9..b07f183fc47f 100644
+--- a/sound/soc/qcom/Kconfig
++++ b/sound/soc/qcom/Kconfig
+@@ -6,12 +6,10 @@ config SND_SOC_QCOM
+
+ config SND_SOC_LPASS_CPU
+ tristate
+- depends on SND_SOC_QCOM
+ select REGMAP_MMIO
+
+ config SND_SOC_LPASS_PLATFORM
+ tristate
+- depends on SND_SOC_QCOM
+ select REGMAP_MMIO
+
+ config SND_SOC_STORM
+diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c
+index 85b523885f9d..2babddaa2481 100644
+--- a/tools/perf/util/cloexec.c
++++ b/tools/perf/util/cloexec.c
+@@ -7,11 +7,15 @@
+
+ static unsigned long flag = PERF_FLAG_FD_CLOEXEC;
+
++#ifdef __GLIBC_PREREQ
++#if !__GLIBC_PREREQ(2, 6)
+ int __weak sched_getcpu(void)
+ {
+ errno = ENOSYS;
+ return -1;
+ }
++#endif
++#endif
+
+ static int perf_flag_probe(void)
+ {
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-07-22 10:31 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-07-22 10:31 UTC (permalink / raw
To: gentoo-commits
commit: 03632db5397e289b513257c01a2149c7657a3c3c
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Jul 22 10:31:21 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Jul 22 10:31:21 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=03632db5
Update kdbus patch. 7-22-2015.
0000_README | 2 +-
...bus-7-17-15.patch => 5015_kdbus-7-22-2015.patch | 2609 +-------------------
2 files changed, 2 insertions(+), 2609 deletions(-)
diff --git a/0000_README b/0000_README
index 8e9fdc7..eab69c9 100644
--- a/0000_README
+++ b/0000_README
@@ -107,6 +107,6 @@ Patch: 5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
From: https://github.com/graysky2/kernel_gcc_patch/
Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs.
-Patch: 5015_kdbus-7-17-15.patch
+Patch: 5015_kdbus-7-22-15.patch
From: https://lkml.org
Desc: Kernel-level IPC implementation
diff --git a/5015_kdbus-7-17-15.patch b/5015_kdbus-7-22-2015.patch
similarity index 92%
rename from 5015_kdbus-7-17-15.patch
rename to 5015_kdbus-7-22-2015.patch
index 61102dd..b110b5c 100644
--- a/5015_kdbus-7-17-15.patch
+++ b/5015_kdbus-7-22-2015.patch
@@ -8,19 +8,6 @@ index bc05482..e2127a7 100644
+ filesystems filesystems ia64 kdbus laptops mic misc-devices \
networking pcmcia prctl ptp spi timers vDSO video4linux \
watchdog
-diff --git a/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt b/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
-index f5a8ca2..750d577 100644
---- a/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
-+++ b/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
-@@ -1,7 +1,7 @@
- * Marvell Armada 370 / Armada XP Ethernet Controller (NETA)
-
- Required properties:
--- compatible: "marvell,armada-370-neta" or "marvell,armada-xp-neta".
-+- compatible: should be "marvell,armada-370-neta".
- - reg: address and length of the register set for the device.
- - interrupts: interrupt for the device
- - phy: See ethernet.txt file in the same directory.
diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt
index 51f4221..ec7c81b 100644
--- a/Documentation/ioctl/ioctl-number.txt
@@ -7470,20 +7457,9 @@ index d8afd29..02f7668 100644
M: Vivek Goyal <vgoyal@redhat.com>
M: Haren Myneni <hbabu@us.ibm.com>
diff --git a/Makefile b/Makefile
-index cef84c0..a1c8d57 100644
+index f5c8983..a1c8d57 100644
--- a/Makefile
+++ b/Makefile
-@@ -1,8 +1,8 @@
- VERSION = 4
- PATCHLEVEL = 1
--SUBLEVEL = 2
-+SUBLEVEL = 0
- EXTRAVERSION =
--NAME = Series 4800
-+NAME = Hurr durr I'ma sheep
-
- # *DOCUMENTATION*
- # To see a list of typical targets execute "make help"
@@ -1343,6 +1343,7 @@ $(help-board-dirs): help-%:
%docs: scripts_basic FORCE
$(Q)$(MAKE) $(build)=scripts build_docproc
@@ -7492,2075 +7468,6 @@ index cef84c0..a1c8d57 100644
else # KBUILD_EXTMOD
-diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi
-index 06a2f2a..ec96f0b 100644
---- a/arch/arm/boot/dts/armada-370-xp.dtsi
-+++ b/arch/arm/boot/dts/armada-370-xp.dtsi
-@@ -270,6 +270,7 @@
- };
-
- eth0: ethernet@70000 {
-+ compatible = "marvell,armada-370-neta";
- reg = <0x70000 0x4000>;
- interrupts = <8>;
- clocks = <&gateclk 4>;
-@@ -285,6 +286,7 @@
- };
-
- eth1: ethernet@74000 {
-+ compatible = "marvell,armada-370-neta";
- reg = <0x74000 0x4000>;
- interrupts = <10>;
- clocks = <&gateclk 3>;
-diff --git a/arch/arm/boot/dts/armada-370.dtsi b/arch/arm/boot/dts/armada-370.dtsi
-index ca4257b..00b50db5 100644
---- a/arch/arm/boot/dts/armada-370.dtsi
-+++ b/arch/arm/boot/dts/armada-370.dtsi
-@@ -307,14 +307,6 @@
- dmacap,memset;
- };
- };
--
-- ethernet@70000 {
-- compatible = "marvell,armada-370-neta";
-- };
--
-- ethernet@74000 {
-- compatible = "marvell,armada-370-neta";
-- };
- };
- };
- };
-diff --git a/arch/arm/boot/dts/armada-xp-mv78260.dtsi b/arch/arm/boot/dts/armada-xp-mv78260.dtsi
-index c5fdc99..8479fdc 100644
---- a/arch/arm/boot/dts/armada-xp-mv78260.dtsi
-+++ b/arch/arm/boot/dts/armada-xp-mv78260.dtsi
-@@ -318,7 +318,7 @@
- };
-
- eth3: ethernet@34000 {
-- compatible = "marvell,armada-xp-neta";
-+ compatible = "marvell,armada-370-neta";
- reg = <0x34000 0x4000>;
- interrupts = <14>;
- clocks = <&gateclk 1>;
-diff --git a/arch/arm/boot/dts/armada-xp-mv78460.dtsi b/arch/arm/boot/dts/armada-xp-mv78460.dtsi
-index 0e24f1a..661d54c 100644
---- a/arch/arm/boot/dts/armada-xp-mv78460.dtsi
-+++ b/arch/arm/boot/dts/armada-xp-mv78460.dtsi
-@@ -356,7 +356,7 @@
- };
-
- eth3: ethernet@34000 {
-- compatible = "marvell,armada-xp-neta";
-+ compatible = "marvell,armada-370-neta";
- reg = <0x34000 0x4000>;
- interrupts = <14>;
- clocks = <&gateclk 1>;
-diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi
-index 8fdd6d7..013d63f 100644
---- a/arch/arm/boot/dts/armada-xp.dtsi
-+++ b/arch/arm/boot/dts/armada-xp.dtsi
-@@ -177,7 +177,7 @@
- };
-
- eth2: ethernet@30000 {
-- compatible = "marvell,armada-xp-neta";
-+ compatible = "marvell,armada-370-neta";
- reg = <0x30000 0x4000>;
- interrupts = <12>;
- clocks = <&gateclk 2>;
-@@ -220,14 +220,6 @@
- };
- };
-
-- ethernet@70000 {
-- compatible = "marvell,armada-xp-neta";
-- };
--
-- ethernet@74000 {
-- compatible = "marvell,armada-xp-neta";
-- };
--
- xor@f0900 {
- compatible = "marvell,orion-xor";
- reg = <0xF0900 0x100
-diff --git a/arch/arm/boot/dts/sun5i-a10s.dtsi b/arch/arm/boot/dts/sun5i-a10s.dtsi
-index 3794ca1..2fd8988 100644
---- a/arch/arm/boot/dts/sun5i-a10s.dtsi
-+++ b/arch/arm/boot/dts/sun5i-a10s.dtsi
-@@ -573,7 +573,7 @@
- };
-
- rtp: rtp@01c25000 {
-- compatible = "allwinner,sun5i-a13-ts";
-+ compatible = "allwinner,sun4i-a10-ts";
- reg = <0x01c25000 0x100>;
- interrupts = <29>;
- #thermal-sensor-cells = <0>;
-diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
-index 5098185..883cb48 100644
---- a/arch/arm/boot/dts/sun5i-a13.dtsi
-+++ b/arch/arm/boot/dts/sun5i-a13.dtsi
-@@ -555,7 +555,7 @@
- };
-
- rtp: rtp@01c25000 {
-- compatible = "allwinner,sun5i-a13-ts";
-+ compatible = "allwinner,sun4i-a10-ts";
- reg = <0x01c25000 0x100>;
- interrupts = <29>;
- #thermal-sensor-cells = <0>;
-diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
-index 2b4847c..fdd1817 100644
---- a/arch/arm/boot/dts/sun7i-a20.dtsi
-+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
-@@ -1042,7 +1042,7 @@
- };
-
- rtp: rtp@01c25000 {
-- compatible = "allwinner,sun5i-a13-ts";
-+ compatible = "allwinner,sun4i-a10-ts";
- reg = <0x01c25000 0x100>;
- interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
- #thermal-sensor-cells = <0>;
-diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
-index f7db3a5..79caf79 100644
---- a/arch/arm/kvm/interrupts.S
-+++ b/arch/arm/kvm/interrupts.S
-@@ -170,9 +170,13 @@ __kvm_vcpu_return:
- @ Don't trap coprocessor accesses for host kernel
- set_hstr vmexit
- set_hdcr vmexit
-- set_hcptr vmexit, (HCPTR_TTA | HCPTR_TCP(10) | HCPTR_TCP(11)), after_vfp_restore
-+ set_hcptr vmexit, (HCPTR_TTA | HCPTR_TCP(10) | HCPTR_TCP(11))
-
- #ifdef CONFIG_VFPv3
-+ @ Save floating point registers we if let guest use them.
-+ tst r2, #(HCPTR_TCP(10) | HCPTR_TCP(11))
-+ bne after_vfp_restore
-+
- @ Switch VFP/NEON hardware state to the host's
- add r7, vcpu, #VCPU_VFP_GUEST
- store_vfp_state r7
-@@ -184,8 +188,6 @@ after_vfp_restore:
- @ Restore FPEXC_EN which we clobbered on entry
- pop {r2}
- VFPFMXR FPEXC, r2
--#else
--after_vfp_restore:
- #endif
-
- @ Reset Hyp-role
-@@ -481,7 +483,7 @@ switch_to_guest_vfp:
- push {r3-r7}
-
- @ NEON/VFP used. Turn on VFP access.
-- set_hcptr vmtrap, (HCPTR_TCP(10) | HCPTR_TCP(11))
-+ set_hcptr vmexit, (HCPTR_TCP(10) | HCPTR_TCP(11))
-
- @ Switch VFP/NEON hardware state to the guest's
- add r7, r0, #VCPU_VFP_HOST
-diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S
-index 48efe2e..35e4a3a 100644
---- a/arch/arm/kvm/interrupts_head.S
-+++ b/arch/arm/kvm/interrupts_head.S
-@@ -591,13 +591,8 @@ ARM_BE8(rev r6, r6 )
- .endm
-
- /* Configures the HCPTR (Hyp Coprocessor Trap Register) on entry/return
-- * (hardware reset value is 0). Keep previous value in r2.
-- * An ISB is emited on vmexit/vmtrap, but executed on vmexit only if
-- * VFP wasn't already enabled (always executed on vmtrap).
-- * If a label is specified with vmexit, it is branched to if VFP wasn't
-- * enabled.
-- */
--.macro set_hcptr operation, mask, label = none
-+ * (hardware reset value is 0). Keep previous value in r2. */
-+.macro set_hcptr operation, mask
- mrc p15, 4, r2, c1, c1, 2
- ldr r3, =\mask
- .if \operation == vmentry
-@@ -606,17 +601,6 @@ ARM_BE8(rev r6, r6 )
- bic r3, r2, r3 @ Don't trap defined coproc-accesses
- .endif
- mcr p15, 4, r3, c1, c1, 2
-- .if \operation != vmentry
-- .if \operation == vmexit
-- tst r2, #(HCPTR_TCP(10) | HCPTR_TCP(11))
-- beq 1f
-- .endif
-- isb
-- .if \label != none
-- b \label
-- .endif
--1:
-- .endif
- .endm
-
- /* Configures the HDCR (Hyp Debug Configuration Register) on entry/return
-diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c
-index 531e922..02fa8ef 100644
---- a/arch/arm/kvm/psci.c
-+++ b/arch/arm/kvm/psci.c
-@@ -230,6 +230,10 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
- case PSCI_0_2_FN64_AFFINITY_INFO:
- val = kvm_psci_vcpu_affinity_info(vcpu);
- break;
-+ case PSCI_0_2_FN_MIGRATE:
-+ case PSCI_0_2_FN64_MIGRATE:
-+ val = PSCI_RET_NOT_SUPPORTED;
-+ break;
- case PSCI_0_2_FN_MIGRATE_INFO_TYPE:
- /*
- * Trusted OS is MP hence does not require migration
-@@ -238,6 +242,10 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
- */
- val = PSCI_0_2_TOS_MP;
- break;
-+ case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU:
-+ case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU:
-+ val = PSCI_RET_NOT_SUPPORTED;
-+ break;
- case PSCI_0_2_FN_SYSTEM_OFF:
- kvm_psci_system_off(vcpu);
- /*
-@@ -263,8 +271,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
- ret = 0;
- break;
- default:
-- val = PSCI_RET_NOT_SUPPORTED;
-- break;
-+ return -EINVAL;
- }
-
- *vcpu_reg(vcpu, 0) = val;
-@@ -284,9 +291,12 @@ static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu)
- case KVM_PSCI_FN_CPU_ON:
- val = kvm_psci_vcpu_on(vcpu);
- break;
-- default:
-+ case KVM_PSCI_FN_CPU_SUSPEND:
-+ case KVM_PSCI_FN_MIGRATE:
- val = PSCI_RET_NOT_SUPPORTED;
- break;
-+ default:
-+ return -EINVAL;
- }
-
- *vcpu_reg(vcpu, 0) = val;
-diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
-index a2e8ef3..469a150 100644
---- a/arch/arm/mach-imx/clk-imx6q.c
-+++ b/arch/arm/mach-imx/clk-imx6q.c
-@@ -443,7 +443,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
- clk[IMX6QDL_CLK_GPMI_IO] = imx_clk_gate2("gpmi_io", "enfc", base + 0x78, 28);
- clk[IMX6QDL_CLK_GPMI_APB] = imx_clk_gate2("gpmi_apb", "usdhc3", base + 0x78, 30);
- clk[IMX6QDL_CLK_ROM] = imx_clk_gate2("rom", "ahb", base + 0x7c, 0);
-- clk[IMX6QDL_CLK_SATA] = imx_clk_gate2("sata", "ahb", base + 0x7c, 4);
-+ clk[IMX6QDL_CLK_SATA] = imx_clk_gate2("sata", "ipg", base + 0x7c, 4);
- clk[IMX6QDL_CLK_SDMA] = imx_clk_gate2("sdma", "ahb", base + 0x7c, 6);
- clk[IMX6QDL_CLK_SPBA] = imx_clk_gate2("spba", "ipg", base + 0x7c, 12);
- clk[IMX6QDL_CLK_SPDIF] = imx_clk_gate2("spdif", "spdif_podf", base + 0x7c, 14);
-diff --git a/arch/arm/mach-mvebu/pm-board.c b/arch/arm/mach-mvebu/pm-board.c
-index 301ab38..6dfd4ab 100644
---- a/arch/arm/mach-mvebu/pm-board.c
-+++ b/arch/arm/mach-mvebu/pm-board.c
-@@ -43,9 +43,6 @@ static void mvebu_armada_xp_gp_pm_enter(void __iomem *sdram_reg, u32 srcmd)
- for (i = 0; i < ARMADA_XP_GP_PIC_NR_GPIOS; i++)
- ackcmd |= BIT(pic_raw_gpios[i]);
-
-- srcmd = cpu_to_le32(srcmd);
-- ackcmd = cpu_to_le32(ackcmd);
--
- /*
- * Wait a while, the PIC needs quite a bit of time between the
- * two GPIO commands.
-diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
-index 7469347..88de2dc 100644
---- a/arch/arm/mach-tegra/cpuidle-tegra20.c
-+++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
-@@ -34,7 +34,6 @@
- #include "iomap.h"
- #include "irq.h"
- #include "pm.h"
--#include "reset.h"
- #include "sleep.h"
-
- #ifdef CONFIG_PM_SLEEP
-@@ -71,13 +70,15 @@ static struct cpuidle_driver tegra_idle_driver = {
-
- #ifdef CONFIG_PM_SLEEP
- #ifdef CONFIG_SMP
-+static void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
-+
- static int tegra20_reset_sleeping_cpu_1(void)
- {
- int ret = 0;
-
- tegra_pen_lock();
-
-- if (readb(tegra20_cpu1_resettable_status) == CPU_RESETTABLE)
-+ if (readl(pmc + PMC_SCRATCH41) == CPU_RESETTABLE)
- tegra20_cpu_shutdown(1);
- else
- ret = -EINVAL;
-diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S
-index e3070fd..71be4af 100644
---- a/arch/arm/mach-tegra/reset-handler.S
-+++ b/arch/arm/mach-tegra/reset-handler.S
-@@ -169,10 +169,10 @@ after_errata:
- cmp r6, #TEGRA20
- bne 1f
- /* If not CPU0, don't let CPU0 reset CPU1 now that CPU1 is coming up. */
-- mov32 r5, TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET
-- mov r0, #CPU_NOT_RESETTABLE
-+ mov32 r5, TEGRA_PMC_BASE
-+ mov r0, #0
- cmp r10, #0
-- strneb r0, [r5, #__tegra20_cpu1_resettable_status_offset]
-+ strne r0, [r5, #PMC_SCRATCH41]
- 1:
- #endif
-
-@@ -281,10 +281,6 @@ __tegra_cpu_reset_handler_data:
- .rept TEGRA_RESET_DATA_SIZE
- .long 0
- .endr
-- .globl __tegra20_cpu1_resettable_status_offset
-- .equ __tegra20_cpu1_resettable_status_offset, \
-- . - __tegra_cpu_reset_handler_start
-- .byte 0
- .align L1_CACHE_SHIFT
-
- ENTRY(__tegra_cpu_reset_handler_end)
-diff --git a/arch/arm/mach-tegra/reset.h b/arch/arm/mach-tegra/reset.h
-index 29c3dec..76a9343 100644
---- a/arch/arm/mach-tegra/reset.h
-+++ b/arch/arm/mach-tegra/reset.h
-@@ -35,7 +35,6 @@ extern unsigned long __tegra_cpu_reset_handler_data[TEGRA_RESET_DATA_SIZE];
-
- void __tegra_cpu_reset_handler_start(void);
- void __tegra_cpu_reset_handler(void);
--void __tegra20_cpu1_resettable_status_offset(void);
- void __tegra_cpu_reset_handler_end(void);
- void tegra_secondary_startup(void);
-
-@@ -48,9 +47,6 @@ void tegra_secondary_startup(void);
- (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \
- ((u32)&__tegra_cpu_reset_handler_data[TEGRA_RESET_MASK_LP2] - \
- (u32)__tegra_cpu_reset_handler_start)))
--#define tegra20_cpu1_resettable_status \
-- (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \
-- (u32)__tegra20_cpu1_resettable_status_offset))
- #endif
-
- #define tegra_cpu_reset_handler_offset \
-diff --git a/arch/arm/mach-tegra/sleep-tegra20.S b/arch/arm/mach-tegra/sleep-tegra20.S
-index e6b684e..be4bc5f 100644
---- a/arch/arm/mach-tegra/sleep-tegra20.S
-+++ b/arch/arm/mach-tegra/sleep-tegra20.S
-@@ -97,10 +97,9 @@ ENDPROC(tegra20_hotplug_shutdown)
- ENTRY(tegra20_cpu_shutdown)
- cmp r0, #0
- reteq lr @ must not be called for CPU 0
-- mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
-- ldr r2, =__tegra20_cpu1_resettable_status_offset
-+ mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
- mov r12, #CPU_RESETTABLE
-- strb r12, [r1, r2]
-+ str r12, [r1]
-
- cpu_to_halt_reg r1, r0
- ldr r3, =TEGRA_FLOW_CTRL_VIRT
-@@ -183,41 +182,38 @@ ENDPROC(tegra_pen_unlock)
- /*
- * tegra20_cpu_clear_resettable(void)
- *
-- * Called to clear the "resettable soon" flag in IRAM variable when
-+ * Called to clear the "resettable soon" flag in PMC_SCRATCH41 when
- * it is expected that the secondary CPU will be idle soon.
- */
- ENTRY(tegra20_cpu_clear_resettable)
-- mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
-- ldr r2, =__tegra20_cpu1_resettable_status_offset
-+ mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
- mov r12, #CPU_NOT_RESETTABLE
-- strb r12, [r1, r2]
-+ str r12, [r1]
- ret lr
- ENDPROC(tegra20_cpu_clear_resettable)
-
- /*
- * tegra20_cpu_set_resettable_soon(void)
- *
-- * Called to set the "resettable soon" flag in IRAM variable when
-+ * Called to set the "resettable soon" flag in PMC_SCRATCH41 when
- * it is expected that the secondary CPU will be idle soon.
- */
- ENTRY(tegra20_cpu_set_resettable_soon)
-- mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
-- ldr r2, =__tegra20_cpu1_resettable_status_offset
-+ mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
- mov r12, #CPU_RESETTABLE_SOON
-- strb r12, [r1, r2]
-+ str r12, [r1]
- ret lr
- ENDPROC(tegra20_cpu_set_resettable_soon)
-
- /*
- * tegra20_cpu_is_resettable_soon(void)
- *
-- * Returns true if the "resettable soon" flag in IRAM variable has been
-+ * Returns true if the "resettable soon" flag in PMC_SCRATCH41 has been
- * set because it is expected that the secondary CPU will be idle soon.
- */
- ENTRY(tegra20_cpu_is_resettable_soon)
-- mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
-- ldr r2, =__tegra20_cpu1_resettable_status_offset
-- ldrb r12, [r1, r2]
-+ mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
-+ ldr r12, [r1]
- cmp r12, #CPU_RESETTABLE_SOON
- moveq r0, #1
- movne r0, #0
-@@ -260,10 +256,9 @@ ENTRY(tegra20_sleep_cpu_secondary_finish)
- mov r0, #TEGRA_FLUSH_CACHE_LOUIS
- bl tegra_disable_clean_inv_dcache
-
-- mov32 r0, TEGRA_IRAM_RESET_BASE_VIRT
-- ldr r4, =__tegra20_cpu1_resettable_status_offset
-+ mov32 r0, TEGRA_PMC_VIRT + PMC_SCRATCH41
- mov r3, #CPU_RESETTABLE
-- strb r3, [r0, r4]
-+ str r3, [r0]
-
- bl tegra_cpu_do_idle
-
-@@ -279,10 +274,10 @@ ENTRY(tegra20_sleep_cpu_secondary_finish)
-
- bl tegra_pen_lock
-
-- mov32 r0, TEGRA_IRAM_RESET_BASE_VIRT
-- ldr r4, =__tegra20_cpu1_resettable_status_offset
-+ mov32 r3, TEGRA_PMC_VIRT
-+ add r0, r3, #PMC_SCRATCH41
- mov r3, #CPU_NOT_RESETTABLE
-- strb r3, [r0, r4]
-+ str r3, [r0]
-
- bl tegra_pen_unlock
-
-diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h
-index 0d59360..92d46ec 100644
---- a/arch/arm/mach-tegra/sleep.h
-+++ b/arch/arm/mach-tegra/sleep.h
-@@ -18,7 +18,6 @@
- #define __MACH_TEGRA_SLEEP_H
-
- #include "iomap.h"
--#include "irammap.h"
-
- #define TEGRA_ARM_PERIF_VIRT (TEGRA_ARM_PERIF_BASE - IO_CPU_PHYS \
- + IO_CPU_VIRT)
-@@ -30,9 +29,6 @@
- + IO_APB_VIRT)
- #define TEGRA_PMC_VIRT (TEGRA_PMC_BASE - IO_APB_PHYS + IO_APB_VIRT)
-
--#define TEGRA_IRAM_RESET_BASE_VIRT (IO_IRAM_VIRT + \
-- TEGRA_IRAM_RESET_HANDLER_OFFSET)
--
- /* PMC_SCRATCH37-39 and 41 are used for tegra_pen_lock and idle */
- #define PMC_SCRATCH37 0x130
- #define PMC_SCRATCH38 0x134
-diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
-index afc96ec..9488fa5 100644
---- a/arch/mips/include/asm/mach-generic/spaces.h
-+++ b/arch/mips/include/asm/mach-generic/spaces.h
-@@ -94,11 +94,7 @@
- #endif
-
- #ifndef FIXADDR_TOP
--#ifdef CONFIG_KVM_GUEST
--#define FIXADDR_TOP ((unsigned long)(long)(int)0x7ffe0000)
--#else
- #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000)
- #endif
--#endif
-
- #endif /* __ASM_MACH_GENERIC_SPACES_H */
-diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
-index 52f205a..bb68e8d 100644
---- a/arch/mips/kvm/mips.c
-+++ b/arch/mips/kvm/mips.c
-@@ -982,7 +982,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
-
- /* If nothing is dirty, don't bother messing with page tables. */
- if (is_dirty) {
-- memslot = id_to_memslot(kvm->memslots, log->slot);
-+ memslot = &kvm->memslots->memslots[log->slot];
-
- ga = memslot->base_gfn << PAGE_SHIFT;
- ga_end = ga + (memslot->npages << PAGE_SHIFT);
-diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
-index d90893b..12b6384 100644
---- a/arch/powerpc/perf/core-book3s.c
-+++ b/arch/powerpc/perf/core-book3s.c
-@@ -131,16 +131,7 @@ static void pmao_restore_workaround(bool ebb) { }
-
- static bool regs_use_siar(struct pt_regs *regs)
- {
-- /*
-- * When we take a performance monitor exception the regs are setup
-- * using perf_read_regs() which overloads some fields, in particular
-- * regs->result to tell us whether to use SIAR.
-- *
-- * However if the regs are from another exception, eg. a syscall, then
-- * they have not been setup using perf_read_regs() and so regs->result
-- * is something random.
-- */
-- return ((TRAP(regs) == 0xf00) && regs->result);
-+ return !!regs->result;
- }
-
- /*
-diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
-index 49b7445..9f73c80 100644
---- a/arch/s390/kernel/crash_dump.c
-+++ b/arch/s390/kernel/crash_dump.c
-@@ -415,7 +415,7 @@ static void *nt_s390_vx_low(void *ptr, __vector128 *vx_regs)
- ptr += len;
- /* Copy lower halves of SIMD registers 0-15 */
- for (i = 0; i < 16; i++) {
-- memcpy(ptr, &vx_regs[i].u[2], 8);
-+ memcpy(ptr, &vx_regs[i], 8);
- ptr += 8;
- }
- return ptr;
-diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
-index b745a10..9de4726 100644
---- a/arch/s390/kvm/interrupt.c
-+++ b/arch/s390/kvm/interrupt.c
-@@ -1061,7 +1061,7 @@ static int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
- if (sclp_has_sigpif())
- return __inject_extcall_sigpif(vcpu, src_id);
-
-- if (test_and_set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs))
-+ if (!test_and_set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs))
- return -EBUSY;
- *extcall = irq->u.extcall;
- atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
-@@ -1606,9 +1606,6 @@ void kvm_s390_clear_float_irqs(struct kvm *kvm)
- int i;
-
- spin_lock(&fi->lock);
-- fi->pending_irqs = 0;
-- memset(&fi->srv_signal, 0, sizeof(fi->srv_signal));
-- memset(&fi->mchk, 0, sizeof(fi->mchk));
- for (i = 0; i < FIRQ_LIST_COUNT; i++)
- clear_irq_list(&fi->lists[i]);
- for (i = 0; i < FIRQ_MAX_COUNT; i++)
-diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
-index 9afb9d6..55423d8 100644
---- a/arch/s390/net/bpf_jit_comp.c
-+++ b/arch/s390/net/bpf_jit_comp.c
-@@ -227,7 +227,7 @@ static inline void reg_set_seen(struct bpf_jit *jit, u32 b1)
- ({ \
- /* Branch instruction needs 6 bytes */ \
- int rel = (addrs[i + off + 1] - (addrs[i + 1] - 6)) / 2;\
-- _EMIT6(op1 | reg(b1, b2) << 16 | (rel & 0xffff), op2 | mask); \
-+ _EMIT6(op1 | reg(b1, b2) << 16 | rel, op2 | mask); \
- REG_SET_SEEN(b1); \
- REG_SET_SEEN(b2); \
- })
-diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
-index 41b06fc..f4a555b 100644
---- a/arch/x86/include/asm/kvm_host.h
-+++ b/arch/x86/include/asm/kvm_host.h
-@@ -591,7 +591,7 @@ struct kvm_arch {
- struct kvm_pic *vpic;
- struct kvm_ioapic *vioapic;
- struct kvm_pit *vpit;
-- atomic_t vapics_in_nmi_mode;
-+ int vapics_in_nmi_mode;
- struct mutex apic_map_lock;
- struct kvm_apic_map *apic_map;
-
-diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
-index aa4e3a7..4f7001f 100644
---- a/arch/x86/kernel/cpu/perf_event.c
-+++ b/arch/x86/kernel/cpu/perf_event.c
-@@ -270,7 +270,11 @@ msr_fail:
-
- static void hw_perf_event_destroy(struct perf_event *event)
- {
-- x86_release_hardware();
-+ if (atomic_dec_and_mutex_lock(&active_events, &pmc_reserve_mutex)) {
-+ release_pmc_hardware();
-+ release_ds_buffers();
-+ mutex_unlock(&pmc_reserve_mutex);
-+ }
- }
-
- void hw_perf_lbr_event_destroy(struct perf_event *event)
-@@ -320,35 +324,6 @@ set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event *event)
- return x86_pmu_extra_regs(val, event);
- }
-
--int x86_reserve_hardware(void)
--{
-- int err = 0;
--
-- if (!atomic_inc_not_zero(&active_events)) {
-- mutex_lock(&pmc_reserve_mutex);
-- if (atomic_read(&active_events) == 0) {
-- if (!reserve_pmc_hardware())
-- err = -EBUSY;
-- else
-- reserve_ds_buffers();
-- }
-- if (!err)
-- atomic_inc(&active_events);
-- mutex_unlock(&pmc_reserve_mutex);
-- }
--
-- return err;
--}
--
--void x86_release_hardware(void)
--{
-- if (atomic_dec_and_mutex_lock(&active_events, &pmc_reserve_mutex)) {
-- release_pmc_hardware();
-- release_ds_buffers();
-- mutex_unlock(&pmc_reserve_mutex);
-- }
--}
--
- /*
- * Check if we can create event of a certain type (that no conflicting events
- * are present).
-@@ -361,10 +336,9 @@ int x86_add_exclusive(unsigned int what)
- return 0;
-
- mutex_lock(&pmc_reserve_mutex);
-- for (i = 0; i < ARRAY_SIZE(x86_pmu.lbr_exclusive); i++) {
-+ for (i = 0; i < ARRAY_SIZE(x86_pmu.lbr_exclusive); i++)
- if (i != what && atomic_read(&x86_pmu.lbr_exclusive[i]))
- goto out;
-- }
-
- atomic_inc(&x86_pmu.lbr_exclusive[what]);
- ret = 0;
-@@ -553,7 +527,19 @@ static int __x86_pmu_event_init(struct perf_event *event)
- if (!x86_pmu_initialized())
- return -ENODEV;
-
-- err = x86_reserve_hardware();
-+ err = 0;
-+ if (!atomic_inc_not_zero(&active_events)) {
-+ mutex_lock(&pmc_reserve_mutex);
-+ if (atomic_read(&active_events) == 0) {
-+ if (!reserve_pmc_hardware())
-+ err = -EBUSY;
-+ else
-+ reserve_ds_buffers();
-+ }
-+ if (!err)
-+ atomic_inc(&active_events);
-+ mutex_unlock(&pmc_reserve_mutex);
-+ }
- if (err)
- return err;
-
-diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h
-index f068695..ef78516 100644
---- a/arch/x86/kernel/cpu/perf_event.h
-+++ b/arch/x86/kernel/cpu/perf_event.h
-@@ -703,10 +703,6 @@ int x86_add_exclusive(unsigned int what);
-
- void x86_del_exclusive(unsigned int what);
-
--int x86_reserve_hardware(void);
--
--void x86_release_hardware(void);
--
- void hw_perf_lbr_event_destroy(struct perf_event *event);
-
- int x86_setup_perfctr(struct perf_event *event);
-diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
-index 2813ea0..a1e35c9 100644
---- a/arch/x86/kernel/cpu/perf_event_intel.c
-+++ b/arch/x86/kernel/cpu/perf_event_intel.c
-@@ -3253,8 +3253,6 @@ __init int intel_pmu_init(void)
-
- case 61: /* 14nm Broadwell Core-M */
- case 86: /* 14nm Broadwell Xeon D */
-- case 71: /* 14nm Broadwell + GT3e (Intel Iris Pro graphics) */
-- case 79: /* 14nm Broadwell Server */
- x86_pmu.late_ack = true;
- memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
- memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
-@@ -3324,13 +3322,13 @@ __init int intel_pmu_init(void)
- * counter, so do not extend mask to generic counters
- */
- for_each_event_constraint(c, x86_pmu.event_constraints) {
-- if (c->cmask == FIXED_EVENT_FLAGS
-- && c->idxmsk64 != INTEL_PMC_MSK_FIXED_REF_CYCLES) {
-- c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
-+ if (c->cmask != FIXED_EVENT_FLAGS
-+ || c->idxmsk64 == INTEL_PMC_MSK_FIXED_REF_CYCLES) {
-+ continue;
- }
-- c->idxmsk64 &=
-- ~(~0UL << (INTEL_PMC_IDX_FIXED + x86_pmu.num_counters_fixed));
-- c->weight = hweight64(c->idxmsk64);
-+
-+ c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
-+ c->weight += x86_pmu.num_counters;
- }
- }
-
-diff --git a/arch/x86/kernel/cpu/perf_event_intel_bts.c b/arch/x86/kernel/cpu/perf_event_intel_bts.c
-index 7795f3f..ac1f0c5 100644
---- a/arch/x86/kernel/cpu/perf_event_intel_bts.c
-+++ b/arch/x86/kernel/cpu/perf_event_intel_bts.c
-@@ -483,26 +483,17 @@ static int bts_event_add(struct perf_event *event, int mode)
-
- static void bts_event_destroy(struct perf_event *event)
- {
-- x86_release_hardware();
- x86_del_exclusive(x86_lbr_exclusive_bts);
- }
-
- static int bts_event_init(struct perf_event *event)
- {
-- int ret;
--
- if (event->attr.type != bts_pmu.type)
- return -ENOENT;
-
- if (x86_add_exclusive(x86_lbr_exclusive_bts))
- return -EBUSY;
-
-- ret = x86_reserve_hardware();
-- if (ret) {
-- x86_del_exclusive(x86_lbr_exclusive_bts);
-- return ret;
-- }
--
- event->destroy = bts_event_destroy;
-
- return 0;
-diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
-index 7e429c9..53eeb22 100644
---- a/arch/x86/kernel/head_32.S
-+++ b/arch/x86/kernel/head_32.S
-@@ -62,16 +62,9 @@
- #define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
- #endif
-
--/*
-- * Number of possible pages in the lowmem region.
-- *
-- * We shift 2 by 31 instead of 1 by 32 to the left in order to avoid a
-- * gas warning about overflowing shift count when gas has been compiled
-- * with only a host target support using a 32-bit type for internal
-- * representation.
-- */
--LOWMEM_PAGES = (((2<<31) - __PAGE_OFFSET) >> PAGE_SHIFT)
--
-+/* Number of possible pages in the lowmem region */
-+LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT)
-+
- /* Enough space to fit pagetables for the low memory linear map */
- MAPPING_BEYOND_END = PAGE_TABLE_SIZE(LOWMEM_PAGES) << PAGE_SHIFT
-
-diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
-index f90952f..4dce6f8 100644
---- a/arch/x86/kvm/i8254.c
-+++ b/arch/x86/kvm/i8254.c
-@@ -305,7 +305,7 @@ static void pit_do_work(struct kthread_work *work)
- * LVT0 to NMI delivery. Other PIC interrupts are just sent to
- * VCPU0, and only if its LVT0 is in EXTINT mode.
- */
-- if (atomic_read(&kvm->arch.vapics_in_nmi_mode) > 0)
-+ if (kvm->arch.vapics_in_nmi_mode > 0)
- kvm_for_each_vcpu(i, vcpu, kvm)
- kvm_apic_nmi_wd_deliver(vcpu);
- }
-diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
-index 67d07e0..4c7deb4 100644
---- a/arch/x86/kvm/lapic.c
-+++ b/arch/x86/kvm/lapic.c
-@@ -1250,10 +1250,10 @@ static void apic_manage_nmi_watchdog(struct kvm_lapic *apic, u32 lvt0_val)
- if (!nmi_wd_enabled) {
- apic_debug("Receive NMI setting on APIC_LVT0 "
- "for cpu %d\n", apic->vcpu->vcpu_id);
-- atomic_inc(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
-+ apic->vcpu->kvm->arch.vapics_in_nmi_mode++;
- }
- } else if (nmi_wd_enabled)
-- atomic_dec(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
-+ apic->vcpu->kvm->arch.vapics_in_nmi_mode--;
- }
-
- static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
-@@ -1808,7 +1808,6 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
- apic_update_ppr(apic);
- hrtimer_cancel(&apic->lapic_timer.timer);
- apic_update_lvtt(apic);
-- apic_manage_nmi_watchdog(apic, kvm_apic_get_reg(apic, APIC_LVT0));
- update_divide_count(apic);
- start_apic_timer(apic);
- apic->irr_pending = true;
-diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
-index 4911bf1..9afa233 100644
---- a/arch/x86/kvm/svm.c
-+++ b/arch/x86/kvm/svm.c
-@@ -511,10 +511,8 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
- {
- struct vcpu_svm *svm = to_svm(vcpu);
-
-- if (svm->vmcb->control.next_rip != 0) {
-- WARN_ON(!static_cpu_has(X86_FEATURE_NRIPS));
-+ if (svm->vmcb->control.next_rip != 0)
- svm->next_rip = svm->vmcb->control.next_rip;
-- }
-
- if (!svm->next_rip) {
- if (emulate_instruction(vcpu, EMULTYPE_SKIP) !=
-@@ -4319,9 +4317,7 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu,
- break;
- }
-
-- /* TODO: Advertise NRIPS to guest hypervisor unconditionally */
-- if (static_cpu_has(X86_FEATURE_NRIPS))
-- vmcb->control.next_rip = info->next_rip;
-+ vmcb->control.next_rip = info->next_rip;
- vmcb->control.exit_code = icpt_info.exit_code;
- vmexit = nested_svm_exit_handled(svm);
-
-diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
-index ff99117..14a63ed 100644
---- a/arch/x86/pci/acpi.c
-+++ b/arch/x86/pci/acpi.c
-@@ -81,17 +81,6 @@ static const struct dmi_system_id pci_crs_quirks[] __initconst = {
- DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
- },
- },
-- /* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/931368 */
-- /* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1033299 */
-- {
-- .callback = set_use_crs,
-- .ident = "Foxconn K8M890-8237A",
-- .matches = {
-- DMI_MATCH(DMI_BOARD_VENDOR, "Foxconn"),
-- DMI_MATCH(DMI_BOARD_NAME, "K8M890-8237A"),
-- DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
-- },
-- },
-
- /* Now for the blacklist.. */
-
-@@ -132,10 +121,8 @@ void __init pci_acpi_crs_quirks(void)
- {
- int year;
-
-- if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008) {
-- if (iomem_resource.end <= 0xffffffff)
-- pci_use_crs = false;
-- }
-+ if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
-+ pci_use_crs = false;
-
- dmi_check_system(pci_crs_quirks);
-
-diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
-index e527a3e..8c81af6 100644
---- a/drivers/bluetooth/ath3k.c
-+++ b/drivers/bluetooth/ath3k.c
-@@ -80,7 +80,6 @@ static const struct usb_device_id ath3k_table[] = {
- { USB_DEVICE(0x0489, 0xe057) },
- { USB_DEVICE(0x0489, 0xe056) },
- { USB_DEVICE(0x0489, 0xe05f) },
-- { USB_DEVICE(0x0489, 0xe076) },
- { USB_DEVICE(0x0489, 0xe078) },
- { USB_DEVICE(0x04c5, 0x1330) },
- { USB_DEVICE(0x04CA, 0x3004) },
-@@ -89,7 +88,6 @@ static const struct usb_device_id ath3k_table[] = {
- { USB_DEVICE(0x04CA, 0x3007) },
- { USB_DEVICE(0x04CA, 0x3008) },
- { USB_DEVICE(0x04CA, 0x300b) },
-- { USB_DEVICE(0x04CA, 0x300d) },
- { USB_DEVICE(0x04CA, 0x300f) },
- { USB_DEVICE(0x04CA, 0x3010) },
- { USB_DEVICE(0x0930, 0x0219) },
-@@ -115,7 +113,6 @@ static const struct usb_device_id ath3k_table[] = {
- { USB_DEVICE(0x13d3, 0x3408) },
- { USB_DEVICE(0x13d3, 0x3423) },
- { USB_DEVICE(0x13d3, 0x3432) },
-- { USB_DEVICE(0x13d3, 0x3474) },
-
- /* Atheros AR5BBU12 with sflash firmware */
- { USB_DEVICE(0x0489, 0xE02C) },
-@@ -140,7 +137,6 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
- { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
-- { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
-@@ -149,7 +145,6 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
- { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
-- { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
-@@ -175,7 +170,6 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
- { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
-- { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
-
- /* Atheros AR5BBU22 with sflash firmware */
- { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
-diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
-index 420cc9f..3c10d4d 100644
---- a/drivers/bluetooth/btusb.c
-+++ b/drivers/bluetooth/btusb.c
-@@ -178,7 +178,6 @@ static const struct usb_device_id blacklist_table[] = {
- { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
-- { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
-@@ -187,7 +186,6 @@ static const struct usb_device_id blacklist_table[] = {
- { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
-- { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
-@@ -213,7 +211,6 @@ static const struct usb_device_id blacklist_table[] = {
- { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
- { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
-- { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
-
- /* Atheros AR5BBU12 with sflash firmware */
- { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
-diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
-index c45d274..6414661 100644
---- a/drivers/cpufreq/intel_pstate.c
-+++ b/drivers/cpufreq/intel_pstate.c
-@@ -535,7 +535,7 @@ static void byt_set_pstate(struct cpudata *cpudata, int pstate)
-
- val |= vid;
-
-- wrmsrl_on_cpu(cpudata->cpu, MSR_IA32_PERF_CTL, val);
-+ wrmsrl(MSR_IA32_PERF_CTL, val);
- }
-
- #define BYT_BCLK_FREQS 5
-diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
-index 3442764..5937207 100644
---- a/drivers/cpuidle/cpuidle-powernv.c
-+++ b/drivers/cpuidle/cpuidle-powernv.c
-@@ -60,8 +60,6 @@ static int nap_loop(struct cpuidle_device *dev,
- return index;
- }
-
--/* Register for fastsleep only in oneshot mode of broadcast */
--#ifdef CONFIG_TICK_ONESHOT
- static int fastsleep_loop(struct cpuidle_device *dev,
- struct cpuidle_driver *drv,
- int index)
-@@ -85,7 +83,7 @@ static int fastsleep_loop(struct cpuidle_device *dev,
-
- return index;
- }
--#endif
-+
- /*
- * States for dedicated partition case.
- */
-@@ -211,14 +209,7 @@ static int powernv_add_idle_states(void)
- powernv_states[nr_idle_states].flags = 0;
- powernv_states[nr_idle_states].target_residency = 100;
- powernv_states[nr_idle_states].enter = &nap_loop;
-- }
--
-- /*
-- * All cpuidle states with CPUIDLE_FLAG_TIMER_STOP set must come
-- * within this config dependency check.
-- */
--#ifdef CONFIG_TICK_ONESHOT
-- if (flags[i] & OPAL_PM_SLEEP_ENABLED ||
-+ } else if (flags[i] & OPAL_PM_SLEEP_ENABLED ||
- flags[i] & OPAL_PM_SLEEP_ENABLED_ER1) {
- /* Add FASTSLEEP state */
- strcpy(powernv_states[nr_idle_states].name, "FastSleep");
-@@ -227,7 +218,7 @@ static int powernv_add_idle_states(void)
- powernv_states[nr_idle_states].target_residency = 300000;
- powernv_states[nr_idle_states].enter = &fastsleep_loop;
- }
--#endif
-+
- powernv_states[nr_idle_states].exit_latency =
- ((unsigned int)latency_ns[i]) / 1000;
-
-diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
-index f062158..857414a 100644
---- a/drivers/crypto/talitos.c
-+++ b/drivers/crypto/talitos.c
-@@ -925,8 +925,7 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
- sg_count--;
- link_tbl_ptr--;
- }
-- link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len)
-- + cryptlen);
-+ be16_add_cpu(&link_tbl_ptr->len, cryptlen);
-
- /* tag end of link table */
- link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
-@@ -2562,7 +2561,6 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
- break;
- default:
- dev_err(dev, "unknown algorithm type %d\n", t_alg->algt.type);
-- kfree(t_alg);
- return ERR_PTR(-EINVAL);
- }
-
-diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
-index ca9f4ed..e1c7e9e 100644
---- a/drivers/iommu/amd_iommu.c
-+++ b/drivers/iommu/amd_iommu.c
-@@ -1869,15 +1869,9 @@ static void free_pt_##LVL (unsigned long __pt) \
- pt = (u64 *)__pt; \
- \
- for (i = 0; i < 512; ++i) { \
-- /* PTE present? */ \
- if (!IOMMU_PTE_PRESENT(pt[i])) \
- continue; \
- \
-- /* Large PTE? */ \
-- if (PM_PTE_LEVEL(pt[i]) == 0 || \
-- PM_PTE_LEVEL(pt[i]) == 7) \
-- continue; \
-- \
- p = (unsigned long)IOMMU_PTE_PAGE(pt[i]); \
- FN(p); \
- } \
-diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
-index 65075ef..66a803b 100644
---- a/drivers/iommu/arm-smmu.c
-+++ b/drivers/iommu/arm-smmu.c
-@@ -1567,7 +1567,7 @@ static int arm_smmu_device_cfg_probe(struct arm_smmu_device *smmu)
- return -ENODEV;
- }
-
-- if ((id & ID0_S1TS) && ((smmu->version == 1) || !(id & ID0_ATOSNS))) {
-+ if ((id & ID0_S1TS) && ((smmu->version == 1) || (id & ID0_ATOSNS))) {
- smmu->features |= ARM_SMMU_FEAT_TRANS_OPS;
- dev_notice(smmu->dev, "\taddress translation ops\n");
- }
-diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
-index 9231cdf..c80287a 100644
---- a/drivers/mmc/host/sdhci.c
-+++ b/drivers/mmc/host/sdhci.c
-@@ -848,7 +848,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
- int sg_cnt;
-
- sg_cnt = sdhci_pre_dma_transfer(host, data, NULL);
-- if (sg_cnt <= 0) {
-+ if (sg_cnt == 0) {
- /*
- * This only happens when someone fed
- * us an invalid request.
-diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
-index e9b1810..b0f6924 100644
---- a/drivers/net/can/dev.c
-+++ b/drivers/net/can/dev.c
-@@ -440,9 +440,6 @@ unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx)
- struct can_frame *cf = (struct can_frame *)skb->data;
- u8 dlc = cf->can_dlc;
-
-- if (!(skb->tstamp.tv64))
-- __net_timestamp(skb);
--
- netif_rx(priv->echo_skb[idx]);
- priv->echo_skb[idx] = NULL;
-
-@@ -578,7 +575,6 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
- if (unlikely(!skb))
- return NULL;
-
-- __net_timestamp(skb);
- skb->protocol = htons(ETH_P_CAN);
- skb->pkt_type = PACKET_BROADCAST;
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-@@ -607,7 +603,6 @@ struct sk_buff *alloc_canfd_skb(struct net_device *dev,
- if (unlikely(!skb))
- return NULL;
-
-- __net_timestamp(skb);
- skb->protocol = htons(ETH_P_CANFD);
- skb->pkt_type = PACKET_BROADCAST;
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
-index f64f529..c837eb9 100644
---- a/drivers/net/can/slcan.c
-+++ b/drivers/net/can/slcan.c
-@@ -207,7 +207,6 @@ static void slc_bump(struct slcan *sl)
- if (!skb)
- return;
-
-- __net_timestamp(skb);
- skb->dev = sl->dev;
- skb->protocol = htons(ETH_P_CAN);
- skb->pkt_type = PACKET_BROADCAST;
-diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c
-index 0ce868d..674f367 100644
---- a/drivers/net/can/vcan.c
-+++ b/drivers/net/can/vcan.c
-@@ -78,9 +78,6 @@ static void vcan_rx(struct sk_buff *skb, struct net_device *dev)
- skb->dev = dev;
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-
-- if (!(skb->tstamp.tv64))
-- __net_timestamp(skb);
--
- netif_rx_ni(skb);
- }
-
-diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
-index 5c92fb7..d81fc6b 100644
---- a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
-+++ b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
-@@ -263,7 +263,7 @@ static int xgbe_alloc_pages(struct xgbe_prv_data *pdata,
- int ret;
-
- /* Try to obtain pages, decreasing order if necessary */
-- gfp |= __GFP_COLD | __GFP_COMP | __GFP_NOWARN;
-+ gfp |= __GFP_COLD | __GFP_COMP;
- while (order >= 0) {
- pages = alloc_pages(gfp, order);
- if (pages)
-diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
-index 8a97d28..33501bc 100644
---- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
-+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
-@@ -9323,8 +9323,7 @@ unload_error:
- * function stop ramrod is sent, since as part of this ramrod FW access
- * PTP registers.
- */
-- if (bp->flags & PTP_SUPPORTED)
-- bnx2x_stop_ptp(bp);
-+ bnx2x_stop_ptp(bp);
-
- /* Disable HW interrupts, NAPI */
- bnx2x_netif_stop(bp, 1);
-diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
-index 74d0389..ce5f7f9 100644
---- a/drivers/net/ethernet/marvell/mvneta.c
-+++ b/drivers/net/ethernet/marvell/mvneta.c
-@@ -310,7 +310,6 @@ struct mvneta_port {
- unsigned int link;
- unsigned int duplex;
- unsigned int speed;
-- unsigned int tx_csum_limit;
- int use_inband_status:1;
- };
-
-@@ -1014,12 +1013,6 @@ static void mvneta_defaults_set(struct mvneta_port *pp)
- val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER);
- val |= MVNETA_GMAC_1MS_CLOCK_ENABLE;
- mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val);
-- } else {
-- val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
-- val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE |
-- MVNETA_GMAC_AN_SPEED_EN |
-- MVNETA_GMAC_AN_DUPLEX_EN);
-- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
- }
-
- mvneta_set_ucast_table(pp, -1);
-@@ -2509,10 +2502,8 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
-
- dev->mtu = mtu;
-
-- if (!netif_running(dev)) {
-- netdev_update_features(dev);
-+ if (!netif_running(dev))
- return 0;
-- }
-
- /* The interface is running, so we have to force a
- * reallocation of the queues
-@@ -2541,26 +2532,9 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
- mvneta_start_dev(pp);
- mvneta_port_up(pp);
-
-- netdev_update_features(dev);
--
- return 0;
- }
-
--static netdev_features_t mvneta_fix_features(struct net_device *dev,
-- netdev_features_t features)
--{
-- struct mvneta_port *pp = netdev_priv(dev);
--
-- if (pp->tx_csum_limit && dev->mtu > pp->tx_csum_limit) {
-- features &= ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
-- netdev_info(dev,
-- "Disable IP checksum for MTU greater than %dB\n",
-- pp->tx_csum_limit);
-- }
--
-- return features;
--}
--
- /* Get mac address */
- static void mvneta_get_mac_addr(struct mvneta_port *pp, unsigned char *addr)
- {
-@@ -2882,7 +2856,6 @@ static const struct net_device_ops mvneta_netdev_ops = {
- .ndo_set_rx_mode = mvneta_set_rx_mode,
- .ndo_set_mac_address = mvneta_set_mac_addr,
- .ndo_change_mtu = mvneta_change_mtu,
-- .ndo_fix_features = mvneta_fix_features,
- .ndo_get_stats64 = mvneta_get_stats64,
- .ndo_do_ioctl = mvneta_ioctl,
- };
-@@ -3128,9 +3101,6 @@ static int mvneta_probe(struct platform_device *pdev)
- }
- }
-
-- if (of_device_is_compatible(dn, "marvell,armada-370-neta"))
-- pp->tx_csum_limit = 1600;
--
- pp->tx_ring_size = MVNETA_MAX_TXD;
- pp->rx_ring_size = MVNETA_MAX_RXD;
-
-@@ -3209,7 +3179,6 @@ static int mvneta_remove(struct platform_device *pdev)
-
- static const struct of_device_id mvneta_match[] = {
- { .compatible = "marvell,armada-370-neta" },
-- { .compatible = "marvell,armada-xp-neta" },
- { }
- };
- MODULE_DEVICE_TABLE(of, mvneta_match);
-diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
-index a5a0b84..cf467a9 100644
---- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
-+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
-@@ -1973,6 +1973,10 @@ void mlx4_en_free_resources(struct mlx4_en_priv *priv)
- mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
- }
-
-+ if (priv->base_tx_qpn) {
-+ mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
-+ priv->base_tx_qpn = 0;
-+ }
- }
-
- int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
-diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
-index eab4e08..2a77a6b 100644
---- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
-+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
-@@ -723,7 +723,7 @@ static int get_fixed_ipv6_csum(__wsum hw_checksum, struct sk_buff *skb,
- }
- #endif
- static int check_csum(struct mlx4_cqe *cqe, struct sk_buff *skb, void *va,
-- netdev_features_t dev_features)
-+ int hwtstamp_rx_filter)
- {
- __wsum hw_checksum = 0;
-
-@@ -731,8 +731,14 @@ static int check_csum(struct mlx4_cqe *cqe, struct sk_buff *skb, void *va,
-
- hw_checksum = csum_unfold((__force __sum16)cqe->checksum);
-
-- if (cqe->vlan_my_qpn & cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK) &&
-- !(dev_features & NETIF_F_HW_VLAN_CTAG_RX)) {
-+ if (((struct ethhdr *)va)->h_proto == htons(ETH_P_8021Q) &&
-+ hwtstamp_rx_filter != HWTSTAMP_FILTER_NONE) {
-+ /* next protocol non IPv4 or IPv6 */
-+ if (((struct vlan_hdr *)hdr)->h_vlan_encapsulated_proto
-+ != htons(ETH_P_IP) &&
-+ ((struct vlan_hdr *)hdr)->h_vlan_encapsulated_proto
-+ != htons(ETH_P_IPV6))
-+ return -1;
- hw_checksum = get_fixed_vlan_csum(hw_checksum, hdr);
- hdr += sizeof(struct vlan_hdr);
- }
-@@ -895,8 +901,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
-
- if (ip_summed == CHECKSUM_COMPLETE) {
- void *va = skb_frag_address(skb_shinfo(gro_skb)->frags);
-- if (check_csum(cqe, gro_skb, va,
-- dev->features)) {
-+ if (check_csum(cqe, gro_skb, va, ring->hwtstamp_rx_filter)) {
- ip_summed = CHECKSUM_NONE;
- ring->csum_none++;
- ring->csum_complete--;
-@@ -951,7 +956,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
- }
-
- if (ip_summed == CHECKSUM_COMPLETE) {
-- if (check_csum(cqe, skb, skb->data, dev->features)) {
-+ if (check_csum(cqe, skb, skb->data, ring->hwtstamp_rx_filter)) {
- ip_summed = CHECKSUM_NONE;
- ring->csum_complete--;
- ring->csum_none++;
-diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
-index c10d98f..7bed3a8 100644
---- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
-+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
-@@ -66,7 +66,6 @@ int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
- ring->size = size;
- ring->size_mask = size - 1;
- ring->stride = stride;
-- ring->full_size = ring->size - HEADROOM - MAX_DESC_TXBBS;
-
- tmp = size * sizeof(struct mlx4_en_tx_info);
- ring->tx_info = kmalloc_node(tmp, GFP_KERNEL | __GFP_NOWARN, node);
-@@ -181,7 +180,6 @@ void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
- mlx4_bf_free(mdev->dev, &ring->bf);
- mlx4_qp_remove(mdev->dev, &ring->qp);
- mlx4_qp_free(mdev->dev, &ring->qp);
-- mlx4_qp_release_range(priv->mdev->dev, ring->qpn, 1);
- mlx4_en_unmap_buffer(&ring->wqres.buf);
- mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
- kfree(ring->bounce_buf);
-@@ -233,11 +231,6 @@ void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
- MLX4_QP_STATE_RST, NULL, 0, 0, &ring->qp);
- }
-
--static inline bool mlx4_en_is_tx_ring_full(struct mlx4_en_tx_ring *ring)
--{
-- return ring->prod - ring->cons > ring->full_size;
--}
--
- static void mlx4_en_stamp_wqe(struct mlx4_en_priv *priv,
- struct mlx4_en_tx_ring *ring, int index,
- u8 owner)
-@@ -480,10 +473,11 @@ static bool mlx4_en_process_tx_cq(struct net_device *dev,
-
- netdev_tx_completed_queue(ring->tx_queue, packets, bytes);
-
-- /* Wakeup Tx queue if this stopped, and ring is not full.
-+ /*
-+ * Wakeup Tx queue if this stopped, and at least 1 packet
-+ * was completed
- */
-- if (netif_tx_queue_stopped(ring->tx_queue) &&
-- !mlx4_en_is_tx_ring_full(ring)) {
-+ if (netif_tx_queue_stopped(ring->tx_queue) && txbbs_skipped > 0) {
- netif_tx_wake_queue(ring->tx_queue);
- ring->wake_queue++;
- }
-@@ -927,7 +921,8 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
- skb_tx_timestamp(skb);
-
- /* Check available TXBBs And 2K spare for prefetch */
-- stop_queue = mlx4_en_is_tx_ring_full(ring);
-+ stop_queue = (int)(ring->prod - ring_cons) >
-+ ring->size - HEADROOM - MAX_DESC_TXBBS;
- if (unlikely(stop_queue)) {
- netif_tx_stop_queue(ring->tx_queue);
- ring->queue_stopped++;
-@@ -996,7 +991,8 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
- smp_rmb();
-
- ring_cons = ACCESS_ONCE(ring->cons);
-- if (unlikely(!mlx4_en_is_tx_ring_full(ring))) {
-+ if (unlikely(((int)(ring->prod - ring_cons)) <=
-+ ring->size - HEADROOM - MAX_DESC_TXBBS)) {
- netif_tx_wake_queue(ring->tx_queue);
- ring->wake_queue++;
- }
-diff --git a/drivers/net/ethernet/mellanox/mlx4/intf.c b/drivers/net/ethernet/mellanox/mlx4/intf.c
-index 0d80aed..6fce587 100644
---- a/drivers/net/ethernet/mellanox/mlx4/intf.c
-+++ b/drivers/net/ethernet/mellanox/mlx4/intf.c
-@@ -93,14 +93,8 @@ int mlx4_register_interface(struct mlx4_interface *intf)
- mutex_lock(&intf_mutex);
-
- list_add_tail(&intf->list, &intf_list);
-- list_for_each_entry(priv, &dev_list, dev_list) {
-- if (mlx4_is_mfunc(&priv->dev) && (intf->flags & MLX4_INTFF_BONDING)) {
-- mlx4_dbg(&priv->dev,
-- "SRIOV, disabling HA mode for intf proto %d\n", intf->protocol);
-- intf->flags &= ~MLX4_INTFF_BONDING;
-- }
-+ list_for_each_entry(priv, &dev_list, dev_list)
- mlx4_add_device(intf, priv);
-- }
-
- mutex_unlock(&intf_mutex);
-
-diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
-index 909fcf8..d021f07 100644
---- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
-+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
-@@ -279,7 +279,6 @@ struct mlx4_en_tx_ring {
- u32 size; /* number of TXBBs */
- u32 size_mask;
- u16 stride;
-- u32 full_size;
- u16 cqn; /* index of port CQ associated with this ring */
- u32 buf_size;
- __be32 doorbell_qpn;
-@@ -580,6 +579,7 @@ struct mlx4_en_priv {
- int vids[128];
- bool wol;
- struct device *ddev;
-+ int base_tx_qpn;
- struct hlist_head mac_hash[MLX4_EN_MAC_HASH_SIZE];
- struct hwtstamp_config hwtstamp_config;
-
-diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
-index d551df6..bdfe51f 100644
---- a/drivers/net/phy/phy_device.c
-+++ b/drivers/net/phy/phy_device.c
-@@ -796,11 +796,10 @@ static int genphy_config_advert(struct phy_device *phydev)
- if (phydev->supported & (SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full)) {
- adv |= ethtool_adv_to_mii_ctrl1000_t(advertise);
-+ if (adv != oldadv)
-+ changed = 1;
- }
-
-- if (adv != oldadv)
-- changed = 1;
--
- err = phy_write(phydev, MII_CTRL1000, adv);
- if (err < 0)
- return err;
-diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
-index 4cdac78..b2f9521 100644
---- a/drivers/net/wireless/b43/main.c
-+++ b/drivers/net/wireless/b43/main.c
-@@ -5365,10 +5365,6 @@ static void b43_supported_bands(struct b43_wldev *dev, bool *have_2ghz_phy,
- *have_5ghz_phy = true;
- return;
- case 0x4321: /* BCM4306 */
-- /* There are 14e4:4321 PCI devs with 2.4 GHz BCM4321 (N-PHY) */
-- if (dev->phy.type != B43_PHYTYPE_G)
-- break;
-- /* fall through */
- case 0x4313: /* BCM4311 */
- case 0x431a: /* BCM4318 */
- case 0x432a: /* BCM4321 */
-diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
-index ec383b0..968787a 100644
---- a/drivers/net/xen-netback/xenbus.c
-+++ b/drivers/net/xen-netback/xenbus.c
-@@ -681,9 +681,6 @@ static int xen_register_watchers(struct xenbus_device *dev, struct xenvif *vif)
- char *node;
- unsigned maxlen = strlen(dev->nodename) + sizeof("/rate");
-
-- if (vif->credit_watch.node)
-- return -EADDRINUSE;
--
- node = kmalloc(maxlen, GFP_KERNEL);
- if (!node)
- return -ENOMEM;
-@@ -773,7 +770,6 @@ static void connect(struct backend_info *be)
- }
-
- xen_net_read_rate(dev, &credit_bytes, &credit_usec);
-- xen_unregister_watchers(be->vif);
- xen_register_watchers(dev, be->vif);
- read_xenbus_vif_flags(be);
-
-diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c
-index f8d8fdb..6f1fa17 100644
---- a/drivers/s390/kvm/virtio_ccw.c
-+++ b/drivers/s390/kvm/virtio_ccw.c
-@@ -65,7 +65,6 @@ struct virtio_ccw_device {
- bool is_thinint;
- bool going_away;
- bool device_lost;
-- unsigned int config_ready;
- void *airq_info;
- };
-
-@@ -834,11 +833,8 @@ static void virtio_ccw_get_config(struct virtio_device *vdev,
- if (ret)
- goto out_free;
-
-- memcpy(vcdev->config, config_area, offset + len);
-- if (buf)
-- memcpy(buf, &vcdev->config[offset], len);
-- if (vcdev->config_ready < offset + len)
-- vcdev->config_ready = offset + len;
-+ memcpy(vcdev->config, config_area, sizeof(vcdev->config));
-+ memcpy(buf, &vcdev->config[offset], len);
-
- out_free:
- kfree(config_area);
-@@ -861,9 +857,6 @@ static void virtio_ccw_set_config(struct virtio_device *vdev,
- if (!config_area)
- goto out_free;
-
-- /* Make sure we don't overwrite fields. */
-- if (vcdev->config_ready < offset)
-- virtio_ccw_get_config(vdev, 0, NULL, offset);
- memcpy(&vcdev->config[offset], buf, len);
- /* Write the config area to the host. */
- memcpy(config_area, vcdev->config, sizeof(vcdev->config));
-diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
-index a086e1d..5c8f581 100644
---- a/drivers/usb/class/cdc-acm.c
-+++ b/drivers/usb/class/cdc-acm.c
-@@ -1477,11 +1477,6 @@ skip_countries:
- goto alloc_fail8;
- }
-
-- if (quirks & CLEAR_HALT_CONDITIONS) {
-- usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress));
-- usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress));
-- }
--
- return 0;
- alloc_fail8:
- if (acm->country_codes) {
-@@ -1761,10 +1756,6 @@ static const struct usb_device_id acm_ids[] = {
- .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
- },
-
-- { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
-- .driver_info = CLEAR_HALT_CONDITIONS,
-- },
--
- /* Nokia S60 phones expose two ACM channels. The first is
- * a modem and is picked up by the standard AT-command
- * information below. The second is 'vendor-specific' but
-diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
-index b3b6c9d..ffeb3c8 100644
---- a/drivers/usb/class/cdc-acm.h
-+++ b/drivers/usb/class/cdc-acm.h
-@@ -133,4 +133,3 @@ struct acm {
- #define NO_DATA_INTERFACE BIT(4)
- #define IGNORE_DEVICE BIT(5)
- #define QUIRK_CONTROL_LINE_STATE BIT(6)
--#define CLEAR_HALT_CONDITIONS BIT(7)
-diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
-index 45b8c8b..3507f88 100644
---- a/drivers/usb/gadget/function/f_fs.c
-+++ b/drivers/usb/gadget/function/f_fs.c
-@@ -3435,7 +3435,6 @@ done:
- static void ffs_closed(struct ffs_data *ffs)
- {
- struct ffs_dev *ffs_obj;
-- struct f_fs_opts *opts;
-
- ENTER();
- ffs_dev_lock();
-@@ -3450,13 +3449,8 @@ static void ffs_closed(struct ffs_data *ffs)
- ffs_obj->ffs_closed_callback)
- ffs_obj->ffs_closed_callback(ffs);
-
-- if (ffs_obj->opts)
-- opts = ffs_obj->opts;
-- else
-- goto done;
--
-- if (opts->no_configfs || !opts->func_inst.group.cg_item.ci_parent
-- || !atomic_read(&opts->func_inst.group.cg_item.ci_kref.refcount))
-+ if (!ffs_obj->opts || ffs_obj->opts->no_configfs
-+ || !ffs_obj->opts->func_inst.group.cg_item.ci_parent)
- goto done;
-
- unregister_gadget_item(ffs_obj->opts->
-diff --git a/fs/dcache.c b/fs/dcache.c
-index 50bb3c2..37b5afd 100644
---- a/fs/dcache.c
-+++ b/fs/dcache.c
-@@ -2927,6 +2927,17 @@ restart:
- vfsmnt = &mnt->mnt;
- continue;
- }
-+ /*
-+ * Filesystems needing to implement special "root names"
-+ * should do so with ->d_dname()
-+ */
-+ if (IS_ROOT(dentry) &&
-+ (dentry->d_name.len != 1 ||
-+ dentry->d_name.name[0] != '/')) {
-+ WARN(1, "Root dentry has weird name <%.*s>\n",
-+ (int) dentry->d_name.len,
-+ dentry->d_name.name);
-+ }
- if (!error)
- error = is_mounted(vfsmnt) ? 1 : 2;
- break;
-diff --git a/fs/inode.c b/fs/inode.c
-index 6e342ca..ea37cd1 100644
---- a/fs/inode.c
-+++ b/fs/inode.c
-@@ -1693,8 +1693,8 @@ int file_remove_suid(struct file *file)
- error = security_inode_killpriv(dentry);
- if (!error && killsuid)
- error = __remove_suid(dentry, killsuid);
-- if (!error)
-- inode_has_no_xattr(inode);
-+ if (!error && (inode->i_sb->s_flags & MS_NOSEC))
-+ inode->i_flags |= S_NOSEC;
-
- return error;
- }
-diff --git a/fs/namespace.c b/fs/namespace.c
-index 1d4a97c..1b9e111 100644
---- a/fs/namespace.c
-+++ b/fs/namespace.c
-@@ -3185,15 +3185,11 @@ bool fs_fully_visible(struct file_system_type *type)
- if (mnt->mnt.mnt_root != mnt->mnt.mnt_sb->s_root)
- continue;
-
-- /* This mount is not fully visible if there are any
-- * locked child mounts that cover anything except for
-- * empty directories.
-+ /* This mount is not fully visible if there are any child mounts
-+ * that cover anything except for empty directories.
- */
- list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
- struct inode *inode = child->mnt_mountpoint->d_inode;
-- /* Only worry about locked mounts */
-- if (!(mnt->mnt.mnt_flags & MNT_LOCKED))
-- continue;
- if (!S_ISDIR(inode->i_mode))
- goto next;
- if (inode->i_nlink > 2)
-diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
-index a7106ed..2c10360 100644
---- a/fs/ufs/balloc.c
-+++ b/fs/ufs/balloc.c
-@@ -51,8 +51,8 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
-
- if (ufs_fragnum(fragment) + count > uspi->s_fpg)
- ufs_error (sb, "ufs_free_fragments", "internal error");
--
-- mutex_lock(&UFS_SB(sb)->s_lock);
-+
-+ lock_ufs(sb);
-
- cgno = ufs_dtog(uspi, fragment);
- bit = ufs_dtogd(uspi, fragment);
-@@ -115,13 +115,13 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
- if (sb->s_flags & MS_SYNCHRONOUS)
- ubh_sync_block(UCPI_UBH(ucpi));
- ufs_mark_sb_dirty(sb);
--
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+
-+ unlock_ufs(sb);
- UFSD("EXIT\n");
- return;
-
- failed:
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- UFSD("EXIT (FAILED)\n");
- return;
- }
-@@ -151,7 +151,7 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count)
- goto failed;
- }
-
-- mutex_lock(&UFS_SB(sb)->s_lock);
-+ lock_ufs(sb);
-
- do_more:
- overflow = 0;
-@@ -211,12 +211,12 @@ do_more:
- }
-
- ufs_mark_sb_dirty(sb);
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- UFSD("EXIT\n");
- return;
-
- failed_unlock:
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- failed:
- UFSD("EXIT (FAILED)\n");
- return;
-@@ -357,7 +357,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
- usb1 = ubh_get_usb_first(uspi);
- *err = -ENOSPC;
-
-- mutex_lock(&UFS_SB(sb)->s_lock);
-+ lock_ufs(sb);
- tmp = ufs_data_ptr_to_cpu(sb, p);
-
- if (count + ufs_fragnum(fragment) > uspi->s_fpb) {
-@@ -378,19 +378,19 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
- "fragment %llu, tmp %llu\n",
- (unsigned long long)fragment,
- (unsigned long long)tmp);
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- return INVBLOCK;
- }
- if (fragment < UFS_I(inode)->i_lastfrag) {
- UFSD("EXIT (ALREADY ALLOCATED)\n");
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- return 0;
- }
- }
- else {
- if (tmp) {
- UFSD("EXIT (ALREADY ALLOCATED)\n");
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- return 0;
- }
- }
-@@ -399,7 +399,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
- * There is not enough space for user on the device
- */
- if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) {
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- UFSD("EXIT (FAILED)\n");
- return 0;
- }
-@@ -424,7 +424,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
- ufs_clear_frags(inode, result + oldcount,
- newcount - oldcount, locked_page != NULL);
- }
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- UFSD("EXIT, result %llu\n", (unsigned long long)result);
- return result;
- }
-@@ -439,7 +439,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
- fragment + count);
- ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
- locked_page != NULL);
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- UFSD("EXIT, result %llu\n", (unsigned long long)result);
- return result;
- }
-@@ -477,7 +477,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
- *err = 0;
- UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag,
- fragment + count);
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- if (newcount < request)
- ufs_free_fragments (inode, result + newcount, request - newcount);
- ufs_free_fragments (inode, tmp, oldcount);
-@@ -485,7 +485,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
- return result;
- }
-
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- UFSD("EXIT (FAILED)\n");
- return 0;
- }
-diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c
-index fd0203c..7caa016 100644
---- a/fs/ufs/ialloc.c
-+++ b/fs/ufs/ialloc.c
-@@ -69,11 +69,11 @@ void ufs_free_inode (struct inode * inode)
-
- ino = inode->i_ino;
-
-- mutex_lock(&UFS_SB(sb)->s_lock);
-+ lock_ufs(sb);
-
- if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) {
- ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino);
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- return;
- }
-
-@@ -81,7 +81,7 @@ void ufs_free_inode (struct inode * inode)
- bit = ufs_inotocgoff (ino);
- ucpi = ufs_load_cylinder (sb, cg);
- if (!ucpi) {
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- return;
- }
- ucg = ubh_get_ucg(UCPI_UBH(ucpi));
-@@ -115,7 +115,7 @@ void ufs_free_inode (struct inode * inode)
- ubh_sync_block(UCPI_UBH(ucpi));
-
- ufs_mark_sb_dirty(sb);
-- mutex_unlock(&UFS_SB(sb)->s_lock);
-+ unlock_ufs(sb);
- UFSD("EXIT\n");
- }
-
-@@ -193,7 +193,7 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode)
- sbi = UFS_SB(sb);
- uspi = sbi->s_uspi;
-
-- mutex_lock(&sbi->s_lock);
-+ lock_ufs(sb);
-
- /*
- * Try to place the inode in its parent directory
-@@ -331,21 +331,21 @@ cg_found:
- sync_dirty_buffer(bh);
- brelse(bh);
- }
-- mutex_unlock(&sbi->s_lock);
-+ unlock_ufs(sb);
-
- UFSD("allocating inode %lu\n", inode->i_ino);
- UFSD("EXIT\n");
- return inode;
-
- fail_remove_inode:
-- mutex_unlock(&sbi->s_lock);
-+ unlock_ufs(sb);
- clear_nlink(inode);
- unlock_new_inode(inode);
- iput(inode);
- UFSD("EXIT (FAILED): err %d\n", err);
- return ERR_PTR(err);
- failed:
-- mutex_unlock(&sbi->s_lock);
-+ unlock_ufs(sb);
- make_bad_inode(inode);
- iput (inode);
- UFSD("EXIT (FAILED): err %d\n", err);
-diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
-index 2d93ab0..be7d42c 100644
---- a/fs/ufs/inode.c
-+++ b/fs/ufs/inode.c
-@@ -902,9 +902,6 @@ void ufs_evict_inode(struct inode * inode)
- invalidate_inode_buffers(inode);
- clear_inode(inode);
-
-- if (want_delete) {
-- lock_ufs(inode->i_sb);
-+ if (want_delete)
- ufs_free_inode(inode);
-- unlock_ufs(inode->i_sb);
-- }
- }
-diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
-index 60ee322..e491a93 100644
---- a/fs/ufs/namei.c
-+++ b/fs/ufs/namei.c
-@@ -128,12 +128,12 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry,
- if (l > sb->s_blocksize)
- goto out_notlocked;
-
-- lock_ufs(dir->i_sb);
- inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
- err = PTR_ERR(inode);
- if (IS_ERR(inode))
-- goto out;
-+ goto out_notlocked;
-
-+ lock_ufs(dir->i_sb);
- if (l > UFS_SB(sb)->s_uspi->s_maxsymlinklen) {
- /* slow symlink */
- inode->i_op = &ufs_symlink_inode_operations;
-@@ -174,12 +174,7 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir,
- inode_inc_link_count(inode);
- ihold(inode);
-
-- error = ufs_add_link(dentry, inode);
-- if (error) {
-- inode_dec_link_count(inode);
-- iput(inode);
-- } else
-- d_instantiate(dentry, inode);
-+ error = ufs_add_nondir(dentry, inode);
- unlock_ufs(dir->i_sb);
- return error;
- }
-@@ -189,13 +184,9 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
- struct inode * inode;
- int err;
-
-- lock_ufs(dir->i_sb);
-- inode_inc_link_count(dir);
--
- inode = ufs_new_inode(dir, S_IFDIR|mode);
-- err = PTR_ERR(inode);
- if (IS_ERR(inode))
-- goto out_dir;
-+ return PTR_ERR(inode);
-
- inode->i_op = &ufs_dir_inode_operations;
- inode->i_fop = &ufs_dir_operations;
-@@ -203,6 +194,9 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
-
- inode_inc_link_count(inode);
-
-+ lock_ufs(dir->i_sb);
-+ inode_inc_link_count(dir);
-+
- err = ufs_make_empty(inode, dir);
- if (err)
- goto out_fail;
-@@ -212,7 +206,6 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
- goto out_fail;
- unlock_ufs(dir->i_sb);
-
-- unlock_new_inode(inode);
- d_instantiate(dentry, inode);
- out:
- return err;
-@@ -222,7 +215,6 @@ out_fail:
- inode_dec_link_count(inode);
- unlock_new_inode(inode);
- iput (inode);
--out_dir:
- inode_dec_link_count(dir);
- unlock_ufs(dir->i_sb);
- goto out;
-diff --git a/fs/ufs/super.c b/fs/ufs/super.c
-index dc33f94..b3bc3e7 100644
---- a/fs/ufs/super.c
-+++ b/fs/ufs/super.c
-@@ -694,7 +694,6 @@ static int ufs_sync_fs(struct super_block *sb, int wait)
- unsigned flags;
-
- lock_ufs(sb);
-- mutex_lock(&UFS_SB(sb)->s_lock);
-
- UFSD("ENTER\n");
-
-@@ -712,7 +711,6 @@ static int ufs_sync_fs(struct super_block *sb, int wait)
- ufs_put_cstotal(sb);
-
- UFSD("EXIT\n");
-- mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
-
- return 0;
-@@ -801,7 +799,6 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
- UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
-
- mutex_init(&sbi->mutex);
-- mutex_init(&sbi->s_lock);
- spin_lock_init(&sbi->work_lock);
- INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
- /*
-@@ -1280,7 +1277,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
-
- sync_filesystem(sb);
- lock_ufs(sb);
-- mutex_lock(&UFS_SB(sb)->s_lock);
- uspi = UFS_SB(sb)->s_uspi;
- flags = UFS_SB(sb)->s_flags;
- usb1 = ubh_get_usb_first(uspi);
-@@ -1294,7 +1290,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
- new_mount_opt = 0;
- ufs_set_opt (new_mount_opt, ONERROR_LOCK);
- if (!ufs_parse_options (data, &new_mount_opt)) {
-- mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
- return -EINVAL;
- }
-@@ -1302,14 +1297,12 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
- new_mount_opt |= ufstype;
- } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
- pr_err("ufstype can't be changed during remount\n");
-- mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
- return -EINVAL;
- }
-
- if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
- UFS_SB(sb)->s_mount_opt = new_mount_opt;
-- mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
- return 0;
- }
-@@ -1333,7 +1326,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
- */
- #ifndef CONFIG_UFS_FS_WRITE
- pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
-- mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
- return -EINVAL;
- #else
-@@ -1343,13 +1335,11 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
- ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
- ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
- pr_err("this ufstype is read-only supported\n");
-- mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
- return -EINVAL;
- }
- if (!ufs_read_cylinder_structures(sb)) {
- pr_err("failed during remounting\n");
-- mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
- return -EPERM;
- }
-@@ -1357,7 +1347,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
- #endif
- }
- UFS_SB(sb)->s_mount_opt = new_mount_opt;
-- mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
- return 0;
- }
-diff --git a/fs/ufs/ufs.h b/fs/ufs/ufs.h
-index cf6368d..2a07396 100644
---- a/fs/ufs/ufs.h
-+++ b/fs/ufs/ufs.h
-@@ -30,7 +30,6 @@ struct ufs_sb_info {
- int work_queued; /* non-zero if the delayed work is queued */
- struct delayed_work sync_work; /* FS sync delayed work */
- spinlock_t work_lock; /* protects sync_work and work_queued */
-- struct mutex s_lock;
- };
-
- struct ufs_inode_info {
-diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h
-index 8ba379f..3573a81 100644
---- a/include/net/netns/sctp.h
-+++ b/include/net/netns/sctp.h
-@@ -31,7 +31,6 @@ struct netns_sctp {
- struct list_head addr_waitq;
- struct timer_list addr_wq_timer;
- struct list_head auto_asconf_splist;
-- /* Lock that protects both addr_waitq and auto_asconf_splist */
- spinlock_t addr_wq_lock;
-
- /* Lock that protects the local_addr_list writers */
-diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
-index 495c87e..2bb2fcf 100644
---- a/include/net/sctp/structs.h
-+++ b/include/net/sctp/structs.h
-@@ -223,10 +223,6 @@ struct sctp_sock {
- atomic_t pd_mode;
- /* Receive to here while partial delivery is in effect. */
- struct sk_buff_head pd_lobby;
--
-- /* These must be the last fields, as they will skipped on copies,
-- * like on accept and peeloff operations
-- */
- struct list_head auto_asconf_list;
- int do_auto_asconf;
- };
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index 1a0006a..4842a98 100644
--- a/include/uapi/linux/Kbuild
@@ -24084,463 +21991,6 @@ index 0000000..5297166
+size_t kdbus_kvec_pad(struct kvec *kvec, u64 *len);
+
+#endif
-diff --git a/kernel/events/core.c b/kernel/events/core.c
-index 0ceb386..eddf1ed 100644
---- a/kernel/events/core.c
-+++ b/kernel/events/core.c
-@@ -4331,20 +4331,20 @@ static void ring_buffer_attach(struct perf_event *event,
- WARN_ON_ONCE(event->rcu_pending);
-
- old_rb = event->rb;
-+ event->rcu_batches = get_state_synchronize_rcu();
-+ event->rcu_pending = 1;
-+
- spin_lock_irqsave(&old_rb->event_lock, flags);
- list_del_rcu(&event->rb_entry);
- spin_unlock_irqrestore(&old_rb->event_lock, flags);
-+ }
-
-- event->rcu_batches = get_state_synchronize_rcu();
-- event->rcu_pending = 1;
-+ if (event->rcu_pending && rb) {
-+ cond_synchronize_rcu(event->rcu_batches);
-+ event->rcu_pending = 0;
- }
-
- if (rb) {
-- if (event->rcu_pending) {
-- cond_synchronize_rcu(event->rcu_batches);
-- event->rcu_pending = 0;
-- }
--
- spin_lock_irqsave(&rb->event_lock, flags);
- list_add_rcu(&event->rb_entry, &rb->event_list);
- spin_unlock_irqrestore(&rb->event_lock, flags);
-diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
-index 8d423bc..a9a4a1b 100644
---- a/net/bridge/br_ioctl.c
-+++ b/net/bridge/br_ioctl.c
-@@ -247,7 +247,9 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
- if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN))
- return -EPERM;
-
-+ spin_lock_bh(&br->lock);
- br_stp_set_bridge_priority(br, args[1]);
-+ spin_unlock_bh(&br->lock);
- return 0;
-
- case BRCTL_SET_PORT_PRIORITY:
-diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
-index 7832d07..4114687 100644
---- a/net/bridge/br_stp_if.c
-+++ b/net/bridge/br_stp_if.c
-@@ -243,13 +243,12 @@ bool br_stp_recalculate_bridge_id(struct net_bridge *br)
- return true;
- }
-
--/* Acquires and releases bridge lock */
-+/* called under bridge lock */
- void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio)
- {
- struct net_bridge_port *p;
- int wasroot;
-
-- spin_lock_bh(&br->lock);
- wasroot = br_is_root_bridge(br);
-
- list_for_each_entry(p, &br->port_list, list) {
-@@ -267,7 +266,6 @@ void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio)
- br_port_state_selection(br);
- if (br_is_root_bridge(br) && !wasroot)
- br_become_root_bridge(br);
-- spin_unlock_bh(&br->lock);
- }
-
- /* called under bridge lock */
-diff --git a/net/can/af_can.c b/net/can/af_can.c
-index 689c818..32d710e 100644
---- a/net/can/af_can.c
-+++ b/net/can/af_can.c
-@@ -310,12 +310,8 @@ int can_send(struct sk_buff *skb, int loop)
- return err;
- }
-
-- if (newskb) {
-- if (!(newskb->tstamp.tv64))
-- __net_timestamp(newskb);
--
-+ if (newskb)
- netif_rx_ni(newskb);
-- }
-
- /* update statistics */
- can_stats.tx_frames++;
-diff --git a/net/core/neighbour.c b/net/core/neighbour.c
-index 2237c1b..3de6542 100644
---- a/net/core/neighbour.c
-+++ b/net/core/neighbour.c
-@@ -957,8 +957,6 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
- rc = 0;
- if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
- goto out_unlock_bh;
-- if (neigh->dead)
-- goto out_dead;
-
- if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
- if (NEIGH_VAR(neigh->parms, MCAST_PROBES) +
-@@ -1015,13 +1013,6 @@ out_unlock_bh:
- write_unlock(&neigh->lock);
- local_bh_enable();
- return rc;
--
--out_dead:
-- if (neigh->nud_state & NUD_STALE)
-- goto out_unlock_bh;
-- write_unlock_bh(&neigh->lock);
-- kfree_skb(skb);
-- return 1;
- }
- EXPORT_SYMBOL(__neigh_event_send);
-
-@@ -1085,8 +1076,6 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
- if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
- (old & (NUD_NOARP | NUD_PERMANENT)))
- goto out;
-- if (neigh->dead)
-- goto out;
-
- if (!(new & NUD_VALID)) {
- neigh_del_timer(neigh);
-@@ -1236,8 +1225,6 @@ EXPORT_SYMBOL(neigh_update);
- */
- void __neigh_set_probe_once(struct neighbour *neigh)
- {
-- if (neigh->dead)
-- return;
- neigh->updated = jiffies;
- if (!(neigh->nud_state & NUD_FAILED))
- return;
-diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
-index a5aa54e..8b47a4d 100644
---- a/net/ipv4/af_inet.c
-+++ b/net/ipv4/af_inet.c
-@@ -228,8 +228,6 @@ int inet_listen(struct socket *sock, int backlog)
- err = 0;
- if (err)
- goto out;
--
-- tcp_fastopen_init_key_once(true);
- }
- err = inet_csk_listen_start(sk, backlog);
- if (err)
-diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
-index 6ddde89..7cfb089 100644
---- a/net/ipv4/ip_sockglue.c
-+++ b/net/ipv4/ip_sockglue.c
-@@ -432,15 +432,6 @@ void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 inf
- kfree_skb(skb);
- }
-
--/* For some errors we have valid addr_offset even with zero payload and
-- * zero port. Also, addr_offset should be supported if port is set.
-- */
--static inline bool ipv4_datagram_support_addr(struct sock_exterr_skb *serr)
--{
-- return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP ||
-- serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port;
--}
--
- /* IPv4 supports cmsg on all imcp errors and some timestamps
- *
- * Timestamp code paths do not initialize the fields expected by cmsg:
-@@ -507,7 +498,7 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
-
- serr = SKB_EXT_ERR(skb);
-
-- if (sin && ipv4_datagram_support_addr(serr)) {
-+ if (sin && serr->port) {
- sin->sin_family = AF_INET;
- sin->sin_addr.s_addr = *(__be32 *)(skb_network_header(skb) +
- serr->addr_offset);
-diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
-index bb2ce74..f1377f2 100644
---- a/net/ipv4/tcp.c
-+++ b/net/ipv4/tcp.c
-@@ -2545,13 +2545,10 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
-
- case TCP_FASTOPEN:
- if (val >= 0 && ((1 << sk->sk_state) & (TCPF_CLOSE |
-- TCPF_LISTEN))) {
-- tcp_fastopen_init_key_once(true);
--
-+ TCPF_LISTEN)))
- err = fastopen_init_queue(sk, val);
-- } else {
-+ else
- err = -EINVAL;
-- }
- break;
- case TCP_TIMESTAMP:
- if (!tp->repair)
-diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c
-index f9c0fb8..46b087a 100644
---- a/net/ipv4/tcp_fastopen.c
-+++ b/net/ipv4/tcp_fastopen.c
-@@ -78,6 +78,8 @@ static bool __tcp_fastopen_cookie_gen(const void *path,
- struct tcp_fastopen_context *ctx;
- bool ok = false;
-
-+ tcp_fastopen_init_key_once(true);
-+
- rcu_read_lock();
- ctx = rcu_dereference(tcp_fastopen_ctx);
- if (ctx) {
-diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
-index 62d908e..762a58c 100644
---- a/net/ipv6/datagram.c
-+++ b/net/ipv6/datagram.c
-@@ -325,16 +325,6 @@ void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu)
- kfree_skb(skb);
- }
-
--/* For some errors we have valid addr_offset even with zero payload and
-- * zero port. Also, addr_offset should be supported if port is set.
-- */
--static inline bool ipv6_datagram_support_addr(struct sock_exterr_skb *serr)
--{
-- return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6 ||
-- serr->ee.ee_origin == SO_EE_ORIGIN_ICMP ||
-- serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port;
--}
--
- /* IPv6 supports cmsg on all origins aside from SO_EE_ORIGIN_LOCAL.
- *
- * At one point, excluding local errors was a quick test to identify icmp/icmp6
-@@ -399,7 +389,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
-
- serr = SKB_EXT_ERR(skb);
-
-- if (sin && ipv6_datagram_support_addr(serr)) {
-+ if (sin && serr->port) {
- const unsigned char *nh = skb_network_header(skb);
- sin->sin6_family = AF_INET6;
- sin->sin6_flowinfo = 0;
-diff --git a/net/mac80211/key.c b/net/mac80211/key.c
-index 81e9785..a907f2d 100644
---- a/net/mac80211/key.c
-+++ b/net/mac80211/key.c
-@@ -66,15 +66,12 @@ update_vlan_tailroom_need_count(struct ieee80211_sub_if_data *sdata, int delta)
- if (sdata->vif.type != NL80211_IFTYPE_AP)
- return;
-
-- /* crypto_tx_tailroom_needed_cnt is protected by this */
-- assert_key_lock(sdata->local);
--
-- rcu_read_lock();
-+ mutex_lock(&sdata->local->mtx);
-
-- list_for_each_entry_rcu(vlan, &sdata->u.ap.vlans, u.vlan.list)
-+ list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
- vlan->crypto_tx_tailroom_needed_cnt += delta;
-
-- rcu_read_unlock();
-+ mutex_unlock(&sdata->local->mtx);
- }
-
- static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
-@@ -98,8 +95,6 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
- * http://mid.gmane.org/1308590980.4322.19.camel@jlt3.sipsolutions.net
- */
-
-- assert_key_lock(sdata->local);
--
- update_vlan_tailroom_need_count(sdata, 1);
-
- if (!sdata->crypto_tx_tailroom_needed_cnt++) {
-@@ -114,8 +109,6 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
- static void decrease_tailroom_need_count(struct ieee80211_sub_if_data *sdata,
- int delta)
- {
-- assert_key_lock(sdata->local);
--
- WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt < delta);
-
- update_vlan_tailroom_need_count(sdata, -delta);
-diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
-index fe1610d..b5989c6 100644
---- a/net/packet/af_packet.c
-+++ b/net/packet/af_packet.c
-@@ -1272,6 +1272,16 @@ static void packet_sock_destruct(struct sock *sk)
- sk_refcnt_debug_dec(sk);
- }
-
-+static int fanout_rr_next(struct packet_fanout *f, unsigned int num)
-+{
-+ int x = atomic_read(&f->rr_cur) + 1;
-+
-+ if (x >= num)
-+ x = 0;
-+
-+ return x;
-+}
-+
- static unsigned int fanout_demux_hash(struct packet_fanout *f,
- struct sk_buff *skb,
- unsigned int num)
-@@ -1283,9 +1293,13 @@ static unsigned int fanout_demux_lb(struct packet_fanout *f,
- struct sk_buff *skb,
- unsigned int num)
- {
-- unsigned int val = atomic_inc_return(&f->rr_cur);
-+ int cur, old;
-
-- return val % num;
-+ cur = atomic_read(&f->rr_cur);
-+ while ((old = atomic_cmpxchg(&f->rr_cur, cur,
-+ fanout_rr_next(f, num))) != cur)
-+ cur = old;
-+ return cur;
- }
-
- static unsigned int fanout_demux_cpu(struct packet_fanout *f,
-@@ -1339,7 +1353,7 @@ static int packet_rcv_fanout(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev)
- {
- struct packet_fanout *f = pt->af_packet_priv;
-- unsigned int num = READ_ONCE(f->num_members);
-+ unsigned int num = f->num_members;
- struct packet_sock *po;
- unsigned int idx;
-
-diff --git a/net/sctp/output.c b/net/sctp/output.c
-index abe7c2d..fc5e45b 100644
---- a/net/sctp/output.c
-+++ b/net/sctp/output.c
-@@ -599,9 +599,7 @@ out:
- return err;
- no_route:
- kfree_skb(nskb);
--
-- if (asoc)
-- IP_INC_STATS(sock_net(asoc->base.sk), IPSTATS_MIB_OUTNOROUTES);
-+ IP_INC_STATS(sock_net(asoc->base.sk), IPSTATS_MIB_OUTNOROUTES);
-
- /* FIXME: Returning the 'err' will effect all the associations
- * associated with a socket, although only one of the paths of the
-diff --git a/net/sctp/socket.c b/net/sctp/socket.c
-index 5f6c4e6..f09de7f 100644
---- a/net/sctp/socket.c
-+++ b/net/sctp/socket.c
-@@ -1528,10 +1528,8 @@ static void sctp_close(struct sock *sk, long timeout)
-
- /* Supposedly, no process has access to the socket, but
- * the net layers still may.
-- * Also, sctp_destroy_sock() needs to be called with addr_wq_lock
-- * held and that should be grabbed before socket lock.
- */
-- spin_lock_bh(&net->sctp.addr_wq_lock);
-+ local_bh_disable();
- bh_lock_sock(sk);
-
- /* Hold the sock, since sk_common_release() will put sock_put()
-@@ -1541,7 +1539,7 @@ static void sctp_close(struct sock *sk, long timeout)
- sk_common_release(sk);
-
- bh_unlock_sock(sk);
-- spin_unlock_bh(&net->sctp.addr_wq_lock);
-+ local_bh_enable();
-
- sock_put(sk);
-
-@@ -3582,7 +3580,6 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
- if ((val && sp->do_auto_asconf) || (!val && !sp->do_auto_asconf))
- return 0;
-
-- spin_lock_bh(&sock_net(sk)->sctp.addr_wq_lock);
- if (val == 0 && sp->do_auto_asconf) {
- list_del(&sp->auto_asconf_list);
- sp->do_auto_asconf = 0;
-@@ -3591,7 +3588,6 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
- &sock_net(sk)->sctp.auto_asconf_splist);
- sp->do_auto_asconf = 1;
- }
-- spin_unlock_bh(&sock_net(sk)->sctp.addr_wq_lock);
- return 0;
- }
-
-@@ -4125,28 +4121,18 @@ static int sctp_init_sock(struct sock *sk)
- local_bh_disable();
- percpu_counter_inc(&sctp_sockets_allocated);
- sock_prot_inuse_add(net, sk->sk_prot, 1);
--
-- /* Nothing can fail after this block, otherwise
-- * sctp_destroy_sock() will be called without addr_wq_lock held
-- */
- if (net->sctp.default_auto_asconf) {
-- spin_lock(&sock_net(sk)->sctp.addr_wq_lock);
- list_add_tail(&sp->auto_asconf_list,
- &net->sctp.auto_asconf_splist);
- sp->do_auto_asconf = 1;
-- spin_unlock(&sock_net(sk)->sctp.addr_wq_lock);
-- } else {
-+ } else
- sp->do_auto_asconf = 0;
-- }
--
- local_bh_enable();
-
- return 0;
- }
-
--/* Cleanup any SCTP per socket resources. Must be called with
-- * sock_net(sk)->sctp.addr_wq_lock held if sp->do_auto_asconf is true
-- */
-+/* Cleanup any SCTP per socket resources. */
- static void sctp_destroy_sock(struct sock *sk)
- {
- struct sctp_sock *sp;
-@@ -7209,19 +7195,6 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
- newinet->mc_list = NULL;
- }
-
--static inline void sctp_copy_descendant(struct sock *sk_to,
-- const struct sock *sk_from)
--{
-- int ancestor_size = sizeof(struct inet_sock) +
-- sizeof(struct sctp_sock) -
-- offsetof(struct sctp_sock, auto_asconf_list);
--
-- if (sk_from->sk_family == PF_INET6)
-- ancestor_size += sizeof(struct ipv6_pinfo);
--
-- __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
--}
--
- /* Populate the fields of the newsk from the oldsk and migrate the assoc
- * and its messages to the newsk.
- */
-@@ -7236,6 +7209,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
- struct sk_buff *skb, *tmp;
- struct sctp_ulpevent *event;
- struct sctp_bind_hashbucket *head;
-+ struct list_head tmplist;
-
- /* Migrate socket buffer sizes and all the socket level options to the
- * new socket.
-@@ -7243,7 +7217,12 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
- newsk->sk_sndbuf = oldsk->sk_sndbuf;
- newsk->sk_rcvbuf = oldsk->sk_rcvbuf;
- /* Brute force copy old sctp opt. */
-- sctp_copy_descendant(newsk, oldsk);
-+ if (oldsp->do_auto_asconf) {
-+ memcpy(&tmplist, &newsp->auto_asconf_list, sizeof(tmplist));
-+ inet_sk_copy_descendant(newsk, oldsk);
-+ memcpy(&newsp->auto_asconf_list, &tmplist, sizeof(tmplist));
-+ } else
-+ inet_sk_copy_descendant(newsk, oldsk);
-
- /* Restore the ep value that was overwritten with the above structure
- * copy.
diff --git a/samples/Kconfig b/samples/Kconfig
index 224ebb4..a4c6b2f 100644
--- a/samples/Kconfig
@@ -26063,39 +23513,6 @@ index 0000000..c3ba958
+}
+
+#endif /* libc sanity check */
-diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
-index 212070e..7dade28 100644
---- a/security/selinux/hooks.c
-+++ b/security/selinux/hooks.c
-@@ -403,7 +403,6 @@ static int selinux_is_sblabel_mnt(struct super_block *sb)
- return sbsec->behavior == SECURITY_FS_USE_XATTR ||
- sbsec->behavior == SECURITY_FS_USE_TRANS ||
- sbsec->behavior == SECURITY_FS_USE_TASK ||
-- sbsec->behavior == SECURITY_FS_USE_NATIVE ||
- /* Special handling. Genfs but also in-core setxattr handler */
- !strcmp(sb->s_type->name, "sysfs") ||
- !strcmp(sb->s_type->name, "pstore") ||
-diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
-index 98cfc38..10df572 100644
---- a/tools/build/Makefile.build
-+++ b/tools/build/Makefile.build
-@@ -94,12 +94,12 @@ obj-y := $(patsubst %/, %/$(obj)-in.o, $(obj-y))
- subdir-obj-y := $(filter %/$(obj)-in.o, $(obj-y))
-
- # '$(OUTPUT)/dir' prefix to all objects
--objprefix := $(subst ./,,$(OUTPUT)$(dir)/)
--obj-y := $(addprefix $(objprefix),$(obj-y))
--subdir-obj-y := $(addprefix $(objprefix),$(subdir-obj-y))
-+prefix := $(subst ./,,$(OUTPUT)$(dir)/)
-+obj-y := $(addprefix $(prefix),$(obj-y))
-+subdir-obj-y := $(addprefix $(prefix),$(subdir-obj-y))
-
- # Final '$(obj)-in.o' object
--in-target := $(objprefix)$(obj)-in.o
-+in-target := $(prefix)$(obj)-in.o
-
- PHONY += $(subdir-y)
-
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 95abddc..b57100c 100644
--- a/tools/testing/selftests/Makefile
@@ -36683,27 +34100,3 @@ index 0000000..cfd1930
+
+ return TEST_OK;
+}
-diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
-index 950064a..78fb820 100644
---- a/virt/kvm/arm/vgic.c
-+++ b/virt/kvm/arm/vgic.c
-@@ -1561,7 +1561,7 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
- goto out;
- }
-
-- if (irq_num >= min(kvm->arch.vgic.nr_irqs, 1020))
-+ if (irq_num >= kvm->arch.vgic.nr_irqs)
- return -EINVAL;
-
- vcpu_id = vgic_update_irq_pending(kvm, cpuid, irq_num, level);
-@@ -2161,7 +2161,10 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id,
-
- BUG_ON(!vgic_initialized(kvm));
-
-+ if (spi > kvm->arch.vgic.nr_irqs)
-+ return -EINVAL;
- return kvm_vgic_inject_irq(kvm, 0, spi, level);
-+
- }
-
- /* MSI not implemented yet */
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-07-22 10:09 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-07-22 10:09 UTC (permalink / raw
To: gentoo-commits
commit: 40044434d47f847553adb9b9cde5c31516fe435c
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Jul 22 10:09:43 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Jul 22 10:09:43 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=40044434
Linux patch 4.1.3
0000_README | 4 +
1002_linux-4.1.3.patch | 3990 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 3994 insertions(+)
diff --git a/0000_README b/0000_README
index 3b87439..8e9fdc7 100644
--- a/0000_README
+++ b/0000_README
@@ -51,6 +51,10 @@ Patch: 1001_linux-4.1.2.patch
From: http://www.kernel.org
Desc: Linux 4.1.2
+Patch: 1002_linux-4.1.3.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.3
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1002_linux-4.1.3.patch b/1002_linux-4.1.3.patch
new file mode 100644
index 0000000..a9dbb97
--- /dev/null
+++ b/1002_linux-4.1.3.patch
@@ -0,0 +1,3990 @@
+diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
+index 0f7afb2bb442..aef8cc5a677b 100644
+--- a/Documentation/DMA-API-HOWTO.txt
++++ b/Documentation/DMA-API-HOWTO.txt
+@@ -25,13 +25,18 @@ physical addresses. These are the addresses in /proc/iomem. The physical
+ address is not directly useful to a driver; it must use ioremap() to map
+ the space and produce a virtual address.
+
+-I/O devices use a third kind of address: a "bus address" or "DMA address".
+-If a device has registers at an MMIO address, or if it performs DMA to read
+-or write system memory, the addresses used by the device are bus addresses.
+-In some systems, bus addresses are identical to CPU physical addresses, but
+-in general they are not. IOMMUs and host bridges can produce arbitrary
++I/O devices use a third kind of address: a "bus address". If a device has
++registers at an MMIO address, or if it performs DMA to read or write system
++memory, the addresses used by the device are bus addresses. In some
++systems, bus addresses are identical to CPU physical addresses, but in
++general they are not. IOMMUs and host bridges can produce arbitrary
+ mappings between physical and bus addresses.
+
++From a device's point of view, DMA uses the bus address space, but it may
++be restricted to a subset of that space. For example, even if a system
++supports 64-bit addresses for main memory and PCI BARs, it may use an IOMMU
++so devices only need to use 32-bit DMA addresses.
++
+ Here's a picture and some examples:
+
+ CPU CPU Bus
+@@ -72,11 +77,11 @@ can use virtual address X to access the buffer, but the device itself
+ cannot because DMA doesn't go through the CPU virtual memory system.
+
+ In some simple systems, the device can do DMA directly to physical address
+-Y. But in many others, there is IOMMU hardware that translates bus
++Y. But in many others, there is IOMMU hardware that translates DMA
+ addresses to physical addresses, e.g., it translates Z to Y. This is part
+ of the reason for the DMA API: the driver can give a virtual address X to
+ an interface like dma_map_single(), which sets up any required IOMMU
+-mapping and returns the bus address Z. The driver then tells the device to
++mapping and returns the DMA address Z. The driver then tells the device to
+ do DMA to Z, and the IOMMU maps it to the buffer at address Y in system
+ RAM.
+
+@@ -98,7 +103,7 @@ First of all, you should make sure
+ #include <linux/dma-mapping.h>
+
+ is in your driver, which provides the definition of dma_addr_t. This type
+-can hold any valid DMA or bus address for the platform and should be used
++can hold any valid DMA address for the platform and should be used
+ everywhere you hold a DMA address returned from the DMA mapping functions.
+
+ What memory is DMA'able?
+@@ -316,7 +321,7 @@ There are two types of DMA mappings:
+ Think of "consistent" as "synchronous" or "coherent".
+
+ The current default is to return consistent memory in the low 32
+- bits of the bus space. However, for future compatibility you should
++ bits of the DMA space. However, for future compatibility you should
+ set the consistent mask even if this default is fine for your
+ driver.
+
+@@ -403,7 +408,7 @@ dma_alloc_coherent() returns two values: the virtual address which you
+ can use to access it from the CPU and dma_handle which you pass to the
+ card.
+
+-The CPU virtual address and the DMA bus address are both
++The CPU virtual address and the DMA address are both
+ guaranteed to be aligned to the smallest PAGE_SIZE order which
+ is greater than or equal to the requested size. This invariant
+ exists (for example) to guarantee that if you allocate a chunk
+@@ -645,8 +650,8 @@ PLEASE NOTE: The 'nents' argument to the dma_unmap_sg call must be
+ dma_map_sg call.
+
+ Every dma_map_{single,sg}() call should have its dma_unmap_{single,sg}()
+-counterpart, because the bus address space is a shared resource and
+-you could render the machine unusable by consuming all bus addresses.
++counterpart, because the DMA address space is a shared resource and
++you could render the machine unusable by consuming all DMA addresses.
+
+ If you need to use the same streaming DMA region multiple times and touch
+ the data in between the DMA transfers, the buffer needs to be synced
+diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
+index 52088408668a..7eba542eff7c 100644
+--- a/Documentation/DMA-API.txt
++++ b/Documentation/DMA-API.txt
+@@ -18,10 +18,10 @@ Part I - dma_ API
+ To get the dma_ API, you must #include <linux/dma-mapping.h>. This
+ provides dma_addr_t and the interfaces described below.
+
+-A dma_addr_t can hold any valid DMA or bus address for the platform. It
+-can be given to a device to use as a DMA source or target. A CPU cannot
+-reference a dma_addr_t directly because there may be translation between
+-its physical address space and the bus address space.
++A dma_addr_t can hold any valid DMA address for the platform. It can be
++given to a device to use as a DMA source or target. A CPU cannot reference
++a dma_addr_t directly because there may be translation between its physical
++address space and the DMA address space.
+
+ Part Ia - Using large DMA-coherent buffers
+ ------------------------------------------
+@@ -42,7 +42,7 @@ It returns a pointer to the allocated region (in the processor's virtual
+ address space) or NULL if the allocation failed.
+
+ It also returns a <dma_handle> which may be cast to an unsigned integer the
+-same width as the bus and given to the device as the bus address base of
++same width as the bus and given to the device as the DMA address base of
+ the region.
+
+ Note: consistent memory can be expensive on some platforms, and the
+@@ -193,7 +193,7 @@ dma_map_single(struct device *dev, void *cpu_addr, size_t size,
+ enum dma_data_direction direction)
+
+ Maps a piece of processor virtual memory so it can be accessed by the
+-device and returns the bus address of the memory.
++device and returns the DMA address of the memory.
+
+ The direction for both APIs may be converted freely by casting.
+ However the dma_ API uses a strongly typed enumerator for its
+@@ -212,20 +212,20 @@ contiguous piece of memory. For this reason, memory to be mapped by
+ this API should be obtained from sources which guarantee it to be
+ physically contiguous (like kmalloc).
+
+-Further, the bus address of the memory must be within the
++Further, the DMA address of the memory must be within the
+ dma_mask of the device (the dma_mask is a bit mask of the
+-addressable region for the device, i.e., if the bus address of
+-the memory ANDed with the dma_mask is still equal to the bus
++addressable region for the device, i.e., if the DMA address of
++the memory ANDed with the dma_mask is still equal to the DMA
+ address, then the device can perform DMA to the memory). To
+ ensure that the memory allocated by kmalloc is within the dma_mask,
+ the driver may specify various platform-dependent flags to restrict
+-the bus address range of the allocation (e.g., on x86, GFP_DMA
+-guarantees to be within the first 16MB of available bus addresses,
++the DMA address range of the allocation (e.g., on x86, GFP_DMA
++guarantees to be within the first 16MB of available DMA addresses,
+ as required by ISA devices).
+
+ Note also that the above constraints on physical contiguity and
+ dma_mask may not apply if the platform has an IOMMU (a device which
+-maps an I/O bus address to a physical memory address). However, to be
++maps an I/O DMA address to a physical memory address). However, to be
+ portable, device driver writers may *not* assume that such an IOMMU
+ exists.
+
+@@ -296,7 +296,7 @@ reduce current DMA mapping usage or delay and try again later).
+ dma_map_sg(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction direction)
+
+-Returns: the number of bus address segments mapped (this may be shorter
++Returns: the number of DMA address segments mapped (this may be shorter
+ than <nents> passed in if some elements of the scatter/gather list are
+ physically or virtually adjacent and an IOMMU maps them with a single
+ entry).
+@@ -340,7 +340,7 @@ must be the same as those and passed in to the scatter/gather mapping
+ API.
+
+ Note: <nents> must be the number you passed in, *not* the number of
+-bus address entries returned.
++DMA address entries returned.
+
+ void
+ dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
+@@ -507,7 +507,7 @@ it's asked for coherent memory for this device.
+ phys_addr is the CPU physical address to which the memory is currently
+ assigned (this will be ioremapped so the CPU can access the region).
+
+-device_addr is the bus address the device needs to be programmed
++device_addr is the DMA address the device needs to be programmed
+ with to actually address this memory (this will be handed out as the
+ dma_addr_t in dma_alloc_coherent()).
+
+diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt
+index 22ed6797216d..4d1673ca8cf8 100644
+--- a/Documentation/devicetree/bindings/spi/spi_pl022.txt
++++ b/Documentation/devicetree/bindings/spi/spi_pl022.txt
+@@ -4,9 +4,9 @@ Required properties:
+ - compatible : "arm,pl022", "arm,primecell"
+ - reg : Offset and length of the register set for the device
+ - interrupts : Should contain SPI controller interrupt
++- num-cs : total number of chipselects
+
+ Optional properties:
+-- num-cs : total number of chipselects
+ - cs-gpios : should specify GPIOs used for chipselects.
+ The gpios will be referred to as reg = <index> in the SPI child nodes.
+ If unspecified, a single SPI device without a chip select can be used.
+diff --git a/Makefile b/Makefile
+index cef84c061f02..e3cdec4898be 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 2
++SUBLEVEL = 3
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h
+index 9917a45fc430..20b7dc17979e 100644
+--- a/arch/arc/include/asm/atomic.h
++++ b/arch/arc/include/asm/atomic.h
+@@ -43,6 +43,12 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \
+ { \
+ unsigned int temp; \
+ \
++ /* \
++ * Explicit full memory barrier needed before/after as \
++ * LLOCK/SCOND thmeselves don't provide any such semantics \
++ */ \
++ smp_mb(); \
++ \
+ __asm__ __volatile__( \
+ "1: llock %0, [%1] \n" \
+ " " #asm_op " %0, %0, %2 \n" \
+@@ -52,6 +58,8 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \
+ : "r"(&v->counter), "ir"(i) \
+ : "cc"); \
+ \
++ smp_mb(); \
++ \
+ return temp; \
+ }
+
+@@ -105,6 +113,9 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \
+ unsigned long flags; \
+ unsigned long temp; \
+ \
++ /* \
++ * spin lock/unlock provides the needed smp_mb() before/after \
++ */ \
+ atomic_ops_lock(flags); \
+ temp = v->counter; \
+ temp c_op i; \
+@@ -142,9 +153,19 @@ ATOMIC_OP(and, &=, and)
+ #define __atomic_add_unless(v, a, u) \
+ ({ \
+ int c, old; \
++ \
++ /* \
++ * Explicit full memory barrier needed before/after as \
++ * LLOCK/SCOND thmeselves don't provide any such semantics \
++ */ \
++ smp_mb(); \
++ \
+ c = atomic_read(v); \
+ while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c)\
+ c = old; \
++ \
++ smp_mb(); \
++ \
+ c; \
+ })
+
+diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h
+index 4051e9525939..624a9d048ca9 100644
+--- a/arch/arc/include/asm/bitops.h
++++ b/arch/arc/include/asm/bitops.h
+@@ -117,6 +117,12 @@ static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
+ if (__builtin_constant_p(nr))
+ nr &= 0x1f;
+
++ /*
++ * Explicit full memory barrier needed before/after as
++ * LLOCK/SCOND themselves don't provide any such semantics
++ */
++ smp_mb();
++
+ __asm__ __volatile__(
+ "1: llock %0, [%2] \n"
+ " bset %1, %0, %3 \n"
+@@ -126,6 +132,8 @@ static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
+ : "r"(m), "ir"(nr)
+ : "cc");
+
++ smp_mb();
++
+ return (old & (1 << nr)) != 0;
+ }
+
+@@ -139,6 +147,8 @@ test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
+ if (__builtin_constant_p(nr))
+ nr &= 0x1f;
+
++ smp_mb();
++
+ __asm__ __volatile__(
+ "1: llock %0, [%2] \n"
+ " bclr %1, %0, %3 \n"
+@@ -148,6 +158,8 @@ test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
+ : "r"(m), "ir"(nr)
+ : "cc");
+
++ smp_mb();
++
+ return (old & (1 << nr)) != 0;
+ }
+
+@@ -161,6 +173,8 @@ test_and_change_bit(unsigned long nr, volatile unsigned long *m)
+ if (__builtin_constant_p(nr))
+ nr &= 0x1f;
+
++ smp_mb();
++
+ __asm__ __volatile__(
+ "1: llock %0, [%2] \n"
+ " bxor %1, %0, %3 \n"
+@@ -170,6 +184,8 @@ test_and_change_bit(unsigned long nr, volatile unsigned long *m)
+ : "r"(m), "ir"(nr)
+ : "cc");
+
++ smp_mb();
++
+ return (old & (1 << nr)) != 0;
+ }
+
+@@ -249,6 +265,9 @@ static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
+ if (__builtin_constant_p(nr))
+ nr &= 0x1f;
+
++ /*
++ * spin lock/unlock provide the needed smp_mb() before/after
++ */
+ bitops_lock(flags);
+
+ old = *m;
+diff --git a/arch/arc/include/asm/cmpxchg.h b/arch/arc/include/asm/cmpxchg.h
+index 03cd6894855d..44fd531f4d7b 100644
+--- a/arch/arc/include/asm/cmpxchg.h
++++ b/arch/arc/include/asm/cmpxchg.h
+@@ -10,6 +10,8 @@
+ #define __ASM_ARC_CMPXCHG_H
+
+ #include <linux/types.h>
++
++#include <asm/barrier.h>
+ #include <asm/smp.h>
+
+ #ifdef CONFIG_ARC_HAS_LLSC
+@@ -19,16 +21,25 @@ __cmpxchg(volatile void *ptr, unsigned long expected, unsigned long new)
+ {
+ unsigned long prev;
+
++ /*
++ * Explicit full memory barrier needed before/after as
++ * LLOCK/SCOND thmeselves don't provide any such semantics
++ */
++ smp_mb();
++
+ __asm__ __volatile__(
+ "1: llock %0, [%1] \n"
+ " brne %0, %2, 2f \n"
+ " scond %3, [%1] \n"
+ " bnz 1b \n"
+ "2: \n"
+- : "=&r"(prev)
+- : "r"(ptr), "ir"(expected),
+- "r"(new) /* can't be "ir". scond can't take limm for "b" */
+- : "cc");
++ : "=&r"(prev) /* Early clobber, to prevent reg reuse */
++ : "r"(ptr), /* Not "m": llock only supports reg direct addr mode */
++ "ir"(expected),
++ "r"(new) /* can't be "ir". scond can't take LIMM for "b" */
++ : "cc", "memory"); /* so that gcc knows memory is being written here */
++
++ smp_mb();
+
+ return prev;
+ }
+@@ -42,6 +53,9 @@ __cmpxchg(volatile void *ptr, unsigned long expected, unsigned long new)
+ int prev;
+ volatile unsigned long *p = ptr;
+
++ /*
++ * spin lock/unlock provide the needed smp_mb() before/after
++ */
+ atomic_ops_lock(flags);
+ prev = *p;
+ if (prev == expected)
+@@ -77,12 +91,16 @@ static inline unsigned long __xchg(unsigned long val, volatile void *ptr,
+
+ switch (size) {
+ case 4:
++ smp_mb();
++
+ __asm__ __volatile__(
+ " ex %0, [%1] \n"
+ : "+r"(val)
+ : "r"(ptr)
+ : "memory");
+
++ smp_mb();
++
+ return val;
+ }
+ return __xchg_bad_pointer();
+diff --git a/arch/arc/include/asm/spinlock.h b/arch/arc/include/asm/spinlock.h
+index b6a8c2dfbe6e..e1651df6a93d 100644
+--- a/arch/arc/include/asm/spinlock.h
++++ b/arch/arc/include/asm/spinlock.h
+@@ -22,24 +22,46 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
+ {
+ unsigned int tmp = __ARCH_SPIN_LOCK_LOCKED__;
+
++ /*
++ * This smp_mb() is technically superfluous, we only need the one
++ * after the lock for providing the ACQUIRE semantics.
++ * However doing the "right" thing was regressing hackbench
++ * so keeping this, pending further investigation
++ */
++ smp_mb();
++
+ __asm__ __volatile__(
+ "1: ex %0, [%1] \n"
+ " breq %0, %2, 1b \n"
+ : "+&r" (tmp)
+ : "r"(&(lock->slock)), "ir"(__ARCH_SPIN_LOCK_LOCKED__)
+ : "memory");
++
++ /*
++ * ACQUIRE barrier to ensure load/store after taking the lock
++ * don't "bleed-up" out of the critical section (leak-in is allowed)
++ * http://www.spinics.net/lists/kernel/msg2010409.html
++ *
++ * ARCv2 only has load-load, store-store and all-all barrier
++ * thus need the full all-all barrier
++ */
++ smp_mb();
+ }
+
+ static inline int arch_spin_trylock(arch_spinlock_t *lock)
+ {
+ unsigned int tmp = __ARCH_SPIN_LOCK_LOCKED__;
+
++ smp_mb();
++
+ __asm__ __volatile__(
+ "1: ex %0, [%1] \n"
+ : "+r" (tmp)
+ : "r"(&(lock->slock))
+ : "memory");
+
++ smp_mb();
++
+ return (tmp == __ARCH_SPIN_LOCK_UNLOCKED__);
+ }
+
+@@ -47,12 +69,22 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
+ {
+ unsigned int tmp = __ARCH_SPIN_LOCK_UNLOCKED__;
+
++ /*
++ * RELEASE barrier: given the instructions avail on ARCv2, full barrier
++ * is the only option
++ */
++ smp_mb();
++
+ __asm__ __volatile__(
+ " ex %0, [%1] \n"
+ : "+r" (tmp)
+ : "r"(&(lock->slock))
+ : "memory");
+
++ /*
++ * superfluous, but keeping for now - see pairing version in
++ * arch_spin_lock above
++ */
+ smp_mb();
+ }
+
+diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c
+index fd2ec50102f2..57b58f52d825 100644
+--- a/arch/arc/kernel/perf_event.c
++++ b/arch/arc/kernel/perf_event.c
+@@ -266,7 +266,6 @@ static int arc_pmu_add(struct perf_event *event, int flags)
+
+ static int arc_pmu_device_probe(struct platform_device *pdev)
+ {
+- struct arc_pmu *arc_pmu;
+ struct arc_reg_pct_build pct_bcr;
+ struct arc_reg_cc_build cc_bcr;
+ int i, j, ret;
+diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
+index 959fe8733560..bddd04d031db 100644
+--- a/arch/arm64/kernel/entry.S
++++ b/arch/arm64/kernel/entry.S
+@@ -517,6 +517,7 @@ el0_sp_pc:
+ mrs x26, far_el1
+ // enable interrupts before calling the main handler
+ enable_dbg_and_irq
++ ct_user_exit
+ mov x0, x26
+ mov x1, x25
+ mov x2, sp
+diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
+index ff3bddea482d..f6fe17d88da5 100644
+--- a/arch/arm64/kernel/vdso/Makefile
++++ b/arch/arm64/kernel/vdso/Makefile
+@@ -15,6 +15,10 @@ ccflags-y := -shared -fno-common -fno-builtin
+ ccflags-y += -nostdlib -Wl,-soname=linux-vdso.so.1 \
+ $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
+
++# Workaround for bare-metal (ELF) toolchains that neglect to pass -shared
++# down to collect2, resulting in silent corruption of the vDSO image.
++ccflags-y += -Wl,-shared
++
+ obj-y += vdso.o
+ extra-y += vdso.lds vdso-offsets.h
+ CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
+diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c
+index baa758d37021..76c1e6cd36fc 100644
+--- a/arch/arm64/mm/context.c
++++ b/arch/arm64/mm/context.c
+@@ -92,6 +92,14 @@ static void reset_context(void *info)
+ unsigned int cpu = smp_processor_id();
+ struct mm_struct *mm = current->active_mm;
+
++ /*
++ * current->active_mm could be init_mm for the idle thread immediately
++ * after secondary CPU boot or hotplug. TTBR0_EL1 is already set to
++ * the reserved value, so no need to reset any context.
++ */
++ if (mm == &init_mm)
++ return;
++
+ smp_rmb();
+ asid = cpu_last_asid + cpu;
+
+diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
+index 597831bdddf3..ad87ce826cce 100644
+--- a/arch/arm64/mm/init.c
++++ b/arch/arm64/mm/init.c
+@@ -262,7 +262,7 @@ static void __init free_unused_memmap(void)
+ * memmap entries are valid from the bank end aligned to
+ * MAX_ORDER_NR_PAGES.
+ */
+- prev_end = ALIGN(start + __phys_to_pfn(reg->size),
++ prev_end = ALIGN(__phys_to_pfn(reg->base + reg->size),
+ MAX_ORDER_NR_PAGES);
+ }
+
+diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
+index d3f896a35b98..2eeb0a0f506d 100644
+--- a/arch/s390/hypfs/inode.c
++++ b/arch/s390/hypfs/inode.c
+@@ -456,8 +456,6 @@ static const struct super_operations hypfs_s_ops = {
+ .show_options = hypfs_show_options,
+ };
+
+-static struct kobject *s390_kobj;
+-
+ static int __init hypfs_init(void)
+ {
+ int rc;
+@@ -481,18 +479,16 @@ static int __init hypfs_init(void)
+ rc = -ENODATA;
+ goto fail_hypfs_sprp_exit;
+ }
+- s390_kobj = kobject_create_and_add("s390", hypervisor_kobj);
+- if (!s390_kobj) {
+- rc = -ENOMEM;
++ rc = sysfs_create_mount_point(hypervisor_kobj, "s390");
++ if (rc)
+ goto fail_hypfs_diag0c_exit;
+- }
+ rc = register_filesystem(&hypfs_type);
+ if (rc)
+ goto fail_filesystem;
+ return 0;
+
+ fail_filesystem:
+- kobject_put(s390_kobj);
++ sysfs_remove_mount_point(hypervisor_kobj, "s390");
+ fail_hypfs_diag0c_exit:
+ hypfs_diag0c_exit();
+ fail_hypfs_sprp_exit:
+@@ -510,7 +506,7 @@ fail_dbfs_exit:
+ static void __exit hypfs_exit(void)
+ {
+ unregister_filesystem(&hypfs_type);
+- kobject_put(s390_kobj);
++ sysfs_remove_mount_point(hypervisor_kobj, "s390");
+ hypfs_diag0c_exit();
+ hypfs_sprp_exit();
+ hypfs_vm_exit();
+diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
+index c412fdb28d34..513e7230e3d0 100644
+--- a/drivers/acpi/bus.c
++++ b/drivers/acpi/bus.c
+@@ -470,6 +470,16 @@ static int __init acpi_bus_init_irq(void)
+ return 0;
+ }
+
++/**
++ * acpi_early_init - Initialize ACPICA and populate the ACPI namespace.
++ *
++ * The ACPI tables are accessible after this, but the handling of events has not
++ * been initialized and the global lock is not available yet, so AML should not
++ * be executed at this point.
++ *
++ * Doing this before switching the EFI runtime services to virtual mode allows
++ * the EfiBootServices memory to be freed slightly earlier on boot.
++ */
+ void __init acpi_early_init(void)
+ {
+ acpi_status status;
+@@ -533,26 +543,42 @@ void __init acpi_early_init(void)
+ acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi;
+ }
+ #endif
++ return;
++
++ error0:
++ disable_acpi();
++}
++
++/**
++ * acpi_subsystem_init - Finalize the early initialization of ACPI.
++ *
++ * Switch over the platform to the ACPI mode (if possible), initialize the
++ * handling of ACPI events, install the interrupt and global lock handlers.
++ *
++ * Doing this too early is generally unsafe, but at the same time it needs to be
++ * done before all things that really depend on ACPI. The right spot appears to
++ * be before finalizing the EFI initialization.
++ */
++void __init acpi_subsystem_init(void)
++{
++ acpi_status status;
++
++ if (acpi_disabled)
++ return;
+
+ status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX "Unable to enable ACPI\n");
+- goto error0;
++ disable_acpi();
++ } else {
++ /*
++ * If the system is using ACPI then we can be reasonably
++ * confident that any regulators are managed by the firmware
++ * so tell the regulator core it has everything it needs to
++ * know.
++ */
++ regulator_has_full_constraints();
+ }
+-
+- /*
+- * If the system is using ACPI then we can be reasonably
+- * confident that any regulators are managed by the firmware
+- * so tell the regulator core it has everything it needs to
+- * know.
+- */
+- regulator_has_full_constraints();
+-
+- return;
+-
+- error0:
+- disable_acpi();
+- return;
+ }
+
+ static int __init acpi_bus_init(void)
+diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
+index 735db11a9b00..8217e0bda60f 100644
+--- a/drivers/acpi/device_pm.c
++++ b/drivers/acpi/device_pm.c
+@@ -953,6 +953,7 @@ EXPORT_SYMBOL_GPL(acpi_subsys_prepare);
+ */
+ void acpi_subsys_complete(struct device *dev)
+ {
++ pm_generic_complete(dev);
+ /*
+ * If the device had been runtime-suspended before the system went into
+ * the sleep state it is going out of and it has never been resumed till
+diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
+index 7ccba395c9dd..5226a8b921ae 100644
+--- a/drivers/acpi/osl.c
++++ b/drivers/acpi/osl.c
+@@ -175,11 +175,7 @@ static void __init acpi_request_region (struct acpi_generic_address *gas,
+ if (!addr || !length)
+ return;
+
+- /* Resources are never freed */
+- if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+- request_region(addr, length, desc);
+- else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
+- request_mem_region(addr, length, desc);
++ acpi_reserve_region(addr, length, gas->space_id, 0, desc);
+ }
+
+ static void __init acpi_reserve_resources(void)
+diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
+index 8244f013f210..fcb7807ea8b7 100644
+--- a/drivers/acpi/resource.c
++++ b/drivers/acpi/resource.c
+@@ -26,6 +26,7 @@
+ #include <linux/device.h>
+ #include <linux/export.h>
+ #include <linux/ioport.h>
++#include <linux/list.h>
+ #include <linux/slab.h>
+
+ #ifdef CONFIG_X86
+@@ -621,3 +622,162 @@ int acpi_dev_filter_resource_type(struct acpi_resource *ares,
+ return (type & types) ? 0 : 1;
+ }
+ EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
++
++struct reserved_region {
++ struct list_head node;
++ u64 start;
++ u64 end;
++};
++
++static LIST_HEAD(reserved_io_regions);
++static LIST_HEAD(reserved_mem_regions);
++
++static int request_range(u64 start, u64 end, u8 space_id, unsigned long flags,
++ char *desc)
++{
++ unsigned int length = end - start + 1;
++ struct resource *res;
++
++ res = space_id == ACPI_ADR_SPACE_SYSTEM_IO ?
++ request_region(start, length, desc) :
++ request_mem_region(start, length, desc);
++ if (!res)
++ return -EIO;
++
++ res->flags &= ~flags;
++ return 0;
++}
++
++static int add_region_before(u64 start, u64 end, u8 space_id,
++ unsigned long flags, char *desc,
++ struct list_head *head)
++{
++ struct reserved_region *reg;
++ int error;
++
++ reg = kmalloc(sizeof(*reg), GFP_KERNEL);
++ if (!reg)
++ return -ENOMEM;
++
++ error = request_range(start, end, space_id, flags, desc);
++ if (error)
++ return error;
++
++ reg->start = start;
++ reg->end = end;
++ list_add_tail(®->node, head);
++ return 0;
++}
++
++/**
++ * acpi_reserve_region - Reserve an I/O or memory region as a system resource.
++ * @start: Starting address of the region.
++ * @length: Length of the region.
++ * @space_id: Identifier of address space to reserve the region from.
++ * @flags: Resource flags to clear for the region after requesting it.
++ * @desc: Region description (for messages).
++ *
++ * Reserve an I/O or memory region as a system resource to prevent others from
++ * using it. If the new region overlaps with one of the regions (in the given
++ * address space) already reserved by this routine, only the non-overlapping
++ * parts of it will be reserved.
++ *
++ * Returned is either 0 (success) or a negative error code indicating a resource
++ * reservation problem. It is the code of the first encountered error, but the
++ * routine doesn't abort until it has attempted to request all of the parts of
++ * the new region that don't overlap with other regions reserved previously.
++ *
++ * The resources requested by this routine are never released.
++ */
++int acpi_reserve_region(u64 start, unsigned int length, u8 space_id,
++ unsigned long flags, char *desc)
++{
++ struct list_head *regions;
++ struct reserved_region *reg;
++ u64 end = start + length - 1;
++ int ret = 0, error = 0;
++
++ if (space_id == ACPI_ADR_SPACE_SYSTEM_IO)
++ regions = &reserved_io_regions;
++ else if (space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
++ regions = &reserved_mem_regions;
++ else
++ return -EINVAL;
++
++ if (list_empty(regions))
++ return add_region_before(start, end, space_id, flags, desc, regions);
++
++ list_for_each_entry(reg, regions, node)
++ if (reg->start == end + 1) {
++ /* The new region can be prepended to this one. */
++ ret = request_range(start, end, space_id, flags, desc);
++ if (!ret)
++ reg->start = start;
++
++ return ret;
++ } else if (reg->start > end) {
++ /* No overlap. Add the new region here and get out. */
++ return add_region_before(start, end, space_id, flags,
++ desc, ®->node);
++ } else if (reg->end == start - 1) {
++ goto combine;
++ } else if (reg->end >= start) {
++ goto overlap;
++ }
++
++ /* The new region goes after the last existing one. */
++ return add_region_before(start, end, space_id, flags, desc, regions);
++
++ overlap:
++ /*
++ * The new region overlaps an existing one.
++ *
++ * The head part of the new region immediately preceding the existing
++ * overlapping one can be combined with it right away.
++ */
++ if (reg->start > start) {
++ error = request_range(start, reg->start - 1, space_id, flags, desc);
++ if (error)
++ ret = error;
++ else
++ reg->start = start;
++ }
++
++ combine:
++ /*
++ * The new region is adjacent to an existing one. If it extends beyond
++ * that region all the way to the next one, it is possible to combine
++ * all three of them.
++ */
++ while (reg->end < end) {
++ struct reserved_region *next = NULL;
++ u64 a = reg->end + 1, b = end;
++
++ if (!list_is_last(®->node, regions)) {
++ next = list_next_entry(reg, node);
++ if (next->start <= end)
++ b = next->start - 1;
++ }
++ error = request_range(a, b, space_id, flags, desc);
++ if (!error) {
++ if (next && next->start == b + 1) {
++ reg->end = next->end;
++ list_del(&next->node);
++ kfree(next);
++ } else {
++ reg->end = end;
++ break;
++ }
++ } else if (next) {
++ if (!ret)
++ ret = error;
++
++ reg = next;
++ } else {
++ break;
++ }
++ }
++
++ return ret ? ret : error;
++}
++EXPORT_SYMBOL_GPL(acpi_reserve_region);
+diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
+index 6273ff072f3e..1c76dcb502cf 100644
+--- a/drivers/base/regmap/regmap.c
++++ b/drivers/base/regmap/regmap.c
+@@ -945,11 +945,10 @@ EXPORT_SYMBOL_GPL(devm_regmap_init);
+ static void regmap_field_init(struct regmap_field *rm_field,
+ struct regmap *regmap, struct reg_field reg_field)
+ {
+- int field_bits = reg_field.msb - reg_field.lsb + 1;
+ rm_field->regmap = regmap;
+ rm_field->reg = reg_field.reg;
+ rm_field->shift = reg_field.lsb;
+- rm_field->mask = ((BIT(field_bits) - 1) << reg_field.lsb);
++ rm_field->mask = GENMASK(reg_field.msb, reg_field.lsb);
+ rm_field->id_size = reg_field.id_size;
+ rm_field->id_offset = reg_field.id_offset;
+ }
+@@ -2318,7 +2317,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
+ &ival);
+ if (ret != 0)
+ return ret;
+- memcpy(val + (i * val_bytes), &ival, val_bytes);
++ map->format.format_val(val + (i * val_bytes), ival, 0);
+ }
+ }
+
+diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
+index 3061bb8629dc..e14363d12690 100644
+--- a/drivers/firmware/efi/efi.c
++++ b/drivers/firmware/efi/efi.c
+@@ -65,7 +65,6 @@ static int __init parse_efi_cmdline(char *str)
+ early_param("efi", parse_efi_cmdline);
+
+ static struct kobject *efi_kobj;
+-static struct kobject *efivars_kobj;
+
+ /*
+ * Let's not leave out systab information that snuck into
+@@ -212,10 +211,9 @@ static int __init efisubsys_init(void)
+ goto err_remove_group;
+
+ /* and the standard mountpoint for efivarfs */
+- efivars_kobj = kobject_create_and_add("efivars", efi_kobj);
+- if (!efivars_kobj) {
++ error = sysfs_create_mount_point(efi_kobj, "efivars");
++ if (error) {
+ pr_err("efivars: Subsystem registration failed.\n");
+- error = -ENOMEM;
+ goto err_remove_group;
+ }
+
+diff --git a/drivers/gpio/gpio-crystalcove.c b/drivers/gpio/gpio-crystalcove.c
+index 91a7ffe83135..ab457fc00e75 100644
+--- a/drivers/gpio/gpio-crystalcove.c
++++ b/drivers/gpio/gpio-crystalcove.c
+@@ -255,6 +255,7 @@ static struct irq_chip crystalcove_irqchip = {
+ .irq_set_type = crystalcove_irq_type,
+ .irq_bus_lock = crystalcove_bus_lock,
+ .irq_bus_sync_unlock = crystalcove_bus_sync_unlock,
++ .flags = IRQCHIP_SKIP_SET_WAKE,
+ };
+
+ static irqreturn_t crystalcove_gpio_irq_handler(int irq, void *data)
+diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
+index fd3977465948..1e14a6c74ed1 100644
+--- a/drivers/gpio/gpio-rcar.c
++++ b/drivers/gpio/gpio-rcar.c
+@@ -177,8 +177,17 @@ static int gpio_rcar_irq_set_wake(struct irq_data *d, unsigned int on)
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct gpio_rcar_priv *p = container_of(gc, struct gpio_rcar_priv,
+ gpio_chip);
+-
+- irq_set_irq_wake(p->irq_parent, on);
++ int error;
++
++ if (p->irq_parent) {
++ error = irq_set_irq_wake(p->irq_parent, on);
++ if (error) {
++ dev_dbg(&p->pdev->dev,
++ "irq %u doesn't support irq_set_wake\n",
++ p->irq_parent);
++ p->irq_parent = 0;
++ }
++ }
+
+ if (!p->clk)
+ return 0;
+diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
+index 51da3692d561..5b7a860df524 100644
+--- a/drivers/iio/accel/kxcjk-1013.c
++++ b/drivers/iio/accel/kxcjk-1013.c
+@@ -1418,6 +1418,7 @@ static const struct dev_pm_ops kxcjk1013_pm_ops = {
+ static const struct acpi_device_id kx_acpi_match[] = {
+ {"KXCJ1013", KXCJK1013},
+ {"KXCJ1008", KXCJ91008},
++ {"KXCJ9000", KXCJ91008},
+ {"KXTJ1009", KXTJ21009},
+ {"SMO8500", KXCJ91008},
+ { },
+diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
+index 918814cd0f80..75c01b27bd0b 100644
+--- a/drivers/infiniband/ulp/srp/ib_srp.c
++++ b/drivers/infiniband/ulp/srp/ib_srp.c
+@@ -465,14 +465,13 @@ static struct srp_fr_pool *srp_alloc_fr_pool(struct srp_target_port *target)
+ */
+ static void srp_destroy_qp(struct srp_rdma_ch *ch)
+ {
+- struct srp_target_port *target = ch->target;
+ static struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
+ static struct ib_recv_wr wr = { .wr_id = SRP_LAST_WR_ID };
+ struct ib_recv_wr *bad_wr;
+ int ret;
+
+ /* Destroying a QP and reusing ch->done is only safe if not connected */
+- WARN_ON_ONCE(target->connected);
++ WARN_ON_ONCE(ch->connected);
+
+ ret = ib_modify_qp(ch->qp, &attr, IB_QP_STATE);
+ WARN_ONCE(ret, "ib_cm_init_qp_attr() returned %d\n", ret);
+@@ -811,35 +810,19 @@ static bool srp_queue_remove_work(struct srp_target_port *target)
+ return changed;
+ }
+
+-static bool srp_change_conn_state(struct srp_target_port *target,
+- bool connected)
+-{
+- bool changed = false;
+-
+- spin_lock_irq(&target->lock);
+- if (target->connected != connected) {
+- target->connected = connected;
+- changed = true;
+- }
+- spin_unlock_irq(&target->lock);
+-
+- return changed;
+-}
+-
+ static void srp_disconnect_target(struct srp_target_port *target)
+ {
+ struct srp_rdma_ch *ch;
+ int i;
+
+- if (srp_change_conn_state(target, false)) {
+- /* XXX should send SRP_I_LOGOUT request */
++ /* XXX should send SRP_I_LOGOUT request */
+
+- for (i = 0; i < target->ch_count; i++) {
+- ch = &target->ch[i];
+- if (ch->cm_id && ib_send_cm_dreq(ch->cm_id, NULL, 0)) {
+- shost_printk(KERN_DEBUG, target->scsi_host,
+- PFX "Sending CM DREQ failed\n");
+- }
++ for (i = 0; i < target->ch_count; i++) {
++ ch = &target->ch[i];
++ ch->connected = false;
++ if (ch->cm_id && ib_send_cm_dreq(ch->cm_id, NULL, 0)) {
++ shost_printk(KERN_DEBUG, target->scsi_host,
++ PFX "Sending CM DREQ failed\n");
+ }
+ }
+ }
+@@ -986,14 +969,26 @@ static void srp_rport_delete(struct srp_rport *rport)
+ srp_queue_remove_work(target);
+ }
+
++/**
++ * srp_connected_ch() - number of connected channels
++ * @target: SRP target port.
++ */
++static int srp_connected_ch(struct srp_target_port *target)
++{
++ int i, c = 0;
++
++ for (i = 0; i < target->ch_count; i++)
++ c += target->ch[i].connected;
++
++ return c;
++}
++
+ static int srp_connect_ch(struct srp_rdma_ch *ch, bool multich)
+ {
+ struct srp_target_port *target = ch->target;
+ int ret;
+
+- WARN_ON_ONCE(!multich && target->connected);
+-
+- target->qp_in_error = false;
++ WARN_ON_ONCE(!multich && srp_connected_ch(target) > 0);
+
+ ret = srp_lookup_path(ch);
+ if (ret)
+@@ -1016,7 +1011,7 @@ static int srp_connect_ch(struct srp_rdma_ch *ch, bool multich)
+ */
+ switch (ch->status) {
+ case 0:
+- srp_change_conn_state(target, true);
++ ch->connected = true;
+ return 0;
+
+ case SRP_PORT_REDIRECT:
+@@ -1243,13 +1238,13 @@ static int srp_rport_reconnect(struct srp_rport *rport)
+ for (j = 0; j < target->queue_size; ++j)
+ list_add(&ch->tx_ring[j]->list, &ch->free_tx);
+ }
++
++ target->qp_in_error = false;
++
+ for (i = 0; i < target->ch_count; i++) {
+ ch = &target->ch[i];
+- if (ret || !ch->target) {
+- if (i > 1)
+- ret = 0;
++ if (ret || !ch->target)
+ break;
+- }
+ ret = srp_connect_ch(ch, multich);
+ multich = true;
+ }
+@@ -1929,7 +1924,7 @@ static void srp_handle_qp_err(u64 wr_id, enum ib_wc_status wc_status,
+ return;
+ }
+
+- if (target->connected && !target->qp_in_error) {
++ if (ch->connected && !target->qp_in_error) {
+ if (wr_id & LOCAL_INV_WR_ID_MASK) {
+ shost_printk(KERN_ERR, target->scsi_host, PFX
+ "LOCAL_INV failed with status %d\n",
+@@ -2367,7 +2362,7 @@ static int srp_cm_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event)
+ case IB_CM_DREQ_RECEIVED:
+ shost_printk(KERN_WARNING, target->scsi_host,
+ PFX "DREQ received - connection closed\n");
+- srp_change_conn_state(target, false);
++ ch->connected = false;
+ if (ib_send_cm_drep(cm_id, NULL, 0))
+ shost_printk(KERN_ERR, target->scsi_host,
+ PFX "Sending CM DREP failed\n");
+@@ -2423,7 +2418,7 @@ static int srp_send_tsk_mgmt(struct srp_rdma_ch *ch, u64 req_tag,
+ struct srp_iu *iu;
+ struct srp_tsk_mgmt *tsk_mgmt;
+
+- if (!target->connected || target->qp_in_error)
++ if (!ch->connected || target->qp_in_error)
+ return -1;
+
+ init_completion(&ch->tsk_mgmt_done);
+@@ -2797,7 +2792,8 @@ static int srp_add_target(struct srp_host *host, struct srp_target_port *target)
+ scsi_scan_target(&target->scsi_host->shost_gendev,
+ 0, target->scsi_id, SCAN_WILD_CARD, 0);
+
+- if (!target->connected || target->qp_in_error) {
++ if (srp_connected_ch(target) < target->ch_count ||
++ target->qp_in_error) {
+ shost_printk(KERN_INFO, target->scsi_host,
+ PFX "SCSI scan failed - removing SCSI host\n");
+ srp_queue_remove_work(target);
+@@ -3172,11 +3168,11 @@ static ssize_t srp_create_target(struct device *dev,
+
+ ret = srp_parse_options(buf, target);
+ if (ret)
+- goto err;
++ goto out;
+
+ ret = scsi_init_shared_tag_map(target_host, target_host->can_queue);
+ if (ret)
+- goto err;
++ goto out;
+
+ target->req_ring_size = target->queue_size - SRP_TSK_MGMT_SQ_SIZE;
+
+@@ -3187,7 +3183,7 @@ static ssize_t srp_create_target(struct device *dev,
+ be64_to_cpu(target->ioc_guid),
+ be64_to_cpu(target->initiator_ext));
+ ret = -EEXIST;
+- goto err;
++ goto out;
+ }
+
+ if (!srp_dev->has_fmr && !srp_dev->has_fr && !target->allow_ext_sg &&
+@@ -3208,7 +3204,7 @@ static ssize_t srp_create_target(struct device *dev,
+ spin_lock_init(&target->lock);
+ ret = ib_query_gid(ibdev, host->port, 0, &target->sgid);
+ if (ret)
+- goto err;
++ goto out;
+
+ ret = -ENOMEM;
+ target->ch_count = max_t(unsigned, num_online_nodes(),
+@@ -3219,7 +3215,7 @@ static ssize_t srp_create_target(struct device *dev,
+ target->ch = kcalloc(target->ch_count, sizeof(*target->ch),
+ GFP_KERNEL);
+ if (!target->ch)
+- goto err;
++ goto out;
+
+ node_idx = 0;
+ for_each_online_node(node) {
+@@ -3315,9 +3311,6 @@ err_disconnect:
+ }
+
+ kfree(target->ch);
+-
+-err:
+- scsi_host_put(target_host);
+ goto out;
+ }
+
+diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
+index a611556406ac..e690847a46dd 100644
+--- a/drivers/infiniband/ulp/srp/ib_srp.h
++++ b/drivers/infiniband/ulp/srp/ib_srp.h
+@@ -170,6 +170,7 @@ struct srp_rdma_ch {
+
+ struct completion tsk_mgmt_done;
+ u8 tsk_mgmt_status;
++ bool connected;
+ };
+
+ /**
+@@ -214,7 +215,6 @@ struct srp_target_port {
+ __be16 pkey;
+
+ u32 rq_tmo_jiffies;
+- bool connected;
+
+ int zero_req_lim;
+
+diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
+index 2c2107147319..8f3e243a62bf 100644
+--- a/drivers/input/touchscreen/pixcir_i2c_ts.c
++++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
+@@ -78,7 +78,7 @@ static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
+ }
+
+ ret = i2c_master_recv(tsdata->client, rdbuf, readsize);
+- if (ret != sizeof(rdbuf)) {
++ if (ret != readsize) {
+ dev_err(&tsdata->client->dev,
+ "%s: i2c_master_recv failed(), ret=%d\n",
+ __func__, ret);
+diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
+index 728681debdbe..7fb2a19ac649 100644
+--- a/drivers/leds/led-class.c
++++ b/drivers/leds/led-class.c
+@@ -187,6 +187,7 @@ void led_classdev_resume(struct led_classdev *led_cdev)
+ }
+ EXPORT_SYMBOL_GPL(led_classdev_resume);
+
++#ifdef CONFIG_PM_SLEEP
+ static int led_suspend(struct device *dev)
+ {
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
+@@ -206,11 +207,9 @@ static int led_resume(struct device *dev)
+
+ return 0;
+ }
++#endif
+
+-static const struct dev_pm_ops leds_class_dev_pm_ops = {
+- .suspend = led_suspend,
+- .resume = led_resume,
+-};
++static SIMPLE_DEV_PM_OPS(leds_class_dev_pm_ops, led_suspend, led_resume);
+
+ static int match_name(struct device *dev, const void *data)
+ {
+diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
+index 1e99ef6a54a2..b2b9f4382d77 100644
+--- a/drivers/misc/mei/client.c
++++ b/drivers/misc/mei/client.c
+@@ -699,7 +699,7 @@ void mei_host_client_init(struct work_struct *work)
+ bool mei_hbuf_acquire(struct mei_device *dev)
+ {
+ if (mei_pg_state(dev) == MEI_PG_ON ||
+- dev->pg_event == MEI_PG_EVENT_WAIT) {
++ mei_pg_in_transition(dev)) {
+ dev_dbg(dev->dev, "device is in pg\n");
+ return false;
+ }
+diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
+index 6fb75e62a764..43d7101ff993 100644
+--- a/drivers/misc/mei/hw-me.c
++++ b/drivers/misc/mei/hw-me.c
+@@ -663,11 +663,27 @@ int mei_me_pg_exit_sync(struct mei_device *dev)
+ mutex_lock(&dev->device_lock);
+
+ reply:
+- if (dev->pg_event == MEI_PG_EVENT_RECEIVED)
+- ret = mei_hbm_pg(dev, MEI_PG_ISOLATION_EXIT_RES_CMD);
++ if (dev->pg_event != MEI_PG_EVENT_RECEIVED) {
++ ret = -ETIME;
++ goto out;
++ }
++
++ dev->pg_event = MEI_PG_EVENT_INTR_WAIT;
++ ret = mei_hbm_pg(dev, MEI_PG_ISOLATION_EXIT_RES_CMD);
++ if (ret)
++ return ret;
++
++ mutex_unlock(&dev->device_lock);
++ wait_event_timeout(dev->wait_pg,
++ dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED, timeout);
++ mutex_lock(&dev->device_lock);
++
++ if (dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED)
++ ret = 0;
+ else
+ ret = -ETIME;
+
++out:
+ dev->pg_event = MEI_PG_EVENT_IDLE;
+ hw->pg_state = MEI_PG_OFF;
+
+@@ -675,6 +691,19 @@ reply:
+ }
+
+ /**
++ * mei_me_pg_in_transition - is device now in pg transition
++ *
++ * @dev: the device structure
++ *
++ * Return: true if in pg transition, false otherwise
++ */
++static bool mei_me_pg_in_transition(struct mei_device *dev)
++{
++ return dev->pg_event >= MEI_PG_EVENT_WAIT &&
++ dev->pg_event <= MEI_PG_EVENT_INTR_WAIT;
++}
++
++/**
+ * mei_me_pg_is_enabled - detect if PG is supported by HW
+ *
+ * @dev: the device structure
+@@ -705,6 +734,24 @@ notsupported:
+ }
+
+ /**
++ * mei_me_pg_intr - perform pg processing in interrupt thread handler
++ *
++ * @dev: the device structure
++ */
++static void mei_me_pg_intr(struct mei_device *dev)
++{
++ struct mei_me_hw *hw = to_me_hw(dev);
++
++ if (dev->pg_event != MEI_PG_EVENT_INTR_WAIT)
++ return;
++
++ dev->pg_event = MEI_PG_EVENT_INTR_RECEIVED;
++ hw->pg_state = MEI_PG_OFF;
++ if (waitqueue_active(&dev->wait_pg))
++ wake_up(&dev->wait_pg);
++}
++
++/**
+ * mei_me_irq_quick_handler - The ISR of the MEI device
+ *
+ * @irq: The irq number
+@@ -761,6 +808,8 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
+ goto end;
+ }
+
++ mei_me_pg_intr(dev);
++
+ /* check if we need to start the dev */
+ if (!mei_host_is_ready(dev)) {
+ if (mei_hw_is_ready(dev)) {
+@@ -797,9 +846,10 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
+ /*
+ * During PG handshake only allowed write is the replay to the
+ * PG exit message, so block calling write function
+- * if the pg state is not idle
++ * if the pg event is in PG handshake
+ */
+- if (dev->pg_event == MEI_PG_EVENT_IDLE) {
++ if (dev->pg_event != MEI_PG_EVENT_WAIT &&
++ dev->pg_event != MEI_PG_EVENT_RECEIVED) {
+ rets = mei_irq_write_handler(dev, &complete_list);
+ dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
+ }
+@@ -824,6 +874,7 @@ static const struct mei_hw_ops mei_me_hw_ops = {
+ .hw_config = mei_me_hw_config,
+ .hw_start = mei_me_hw_start,
+
++ .pg_in_transition = mei_me_pg_in_transition,
+ .pg_is_enabled = mei_me_pg_is_enabled,
+
+ .intr_clear = mei_me_intr_clear,
+diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
+index 7abafe7d120d..bae680c648ff 100644
+--- a/drivers/misc/mei/hw-txe.c
++++ b/drivers/misc/mei/hw-txe.c
+@@ -16,6 +16,7 @@
+
+ #include <linux/pci.h>
+ #include <linux/jiffies.h>
++#include <linux/ktime.h>
+ #include <linux/delay.h>
+ #include <linux/kthread.h>
+ #include <linux/irqreturn.h>
+@@ -218,26 +219,25 @@ static u32 mei_txe_aliveness_get(struct mei_device *dev)
+ *
+ * Polls for HICR_HOST_ALIVENESS_RESP.ALIVENESS_RESP to be set
+ *
+- * Return: > 0 if the expected value was received, -ETIME otherwise
++ * Return: 0 if the expected value was received, -ETIME otherwise
+ */
+ static int mei_txe_aliveness_poll(struct mei_device *dev, u32 expected)
+ {
+ struct mei_txe_hw *hw = to_txe_hw(dev);
+- int t = 0;
++ ktime_t stop, start;
+
++ start = ktime_get();
++ stop = ktime_add(start, ms_to_ktime(SEC_ALIVENESS_WAIT_TIMEOUT));
+ do {
+ hw->aliveness = mei_txe_aliveness_get(dev);
+ if (hw->aliveness == expected) {
+ dev->pg_event = MEI_PG_EVENT_IDLE;
+- dev_dbg(dev->dev,
+- "aliveness settled after %d msecs\n", t);
+- return t;
++ dev_dbg(dev->dev, "aliveness settled after %lld usecs\n",
++ ktime_to_us(ktime_sub(ktime_get(), start)));
++ return 0;
+ }
+- mutex_unlock(&dev->device_lock);
+- msleep(MSEC_PER_SEC / 5);
+- mutex_lock(&dev->device_lock);
+- t += MSEC_PER_SEC / 5;
+- } while (t < SEC_ALIVENESS_WAIT_TIMEOUT);
++ usleep_range(20, 50);
++ } while (ktime_before(ktime_get(), stop));
+
+ dev->pg_event = MEI_PG_EVENT_IDLE;
+ dev_err(dev->dev, "aliveness timed out\n");
+@@ -302,6 +302,18 @@ int mei_txe_aliveness_set_sync(struct mei_device *dev, u32 req)
+ }
+
+ /**
++ * mei_txe_pg_in_transition - is device now in pg transition
++ *
++ * @dev: the device structure
++ *
++ * Return: true if in pg transition, false otherwise
++ */
++static bool mei_txe_pg_in_transition(struct mei_device *dev)
++{
++ return dev->pg_event == MEI_PG_EVENT_WAIT;
++}
++
++/**
+ * mei_txe_pg_is_enabled - detect if PG is supported by HW
+ *
+ * @dev: the device structure
+@@ -1138,6 +1150,7 @@ static const struct mei_hw_ops mei_txe_hw_ops = {
+ .hw_config = mei_txe_hw_config,
+ .hw_start = mei_txe_hw_start,
+
++ .pg_in_transition = mei_txe_pg_in_transition,
+ .pg_is_enabled = mei_txe_pg_is_enabled,
+
+ .intr_clear = mei_txe_intr_clear,
+diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
+index f066ecd71939..f84c39ee28a8 100644
+--- a/drivers/misc/mei/mei_dev.h
++++ b/drivers/misc/mei/mei_dev.h
+@@ -271,6 +271,7 @@ struct mei_cl {
+
+ * @fw_status : get fw status registers
+ * @pg_state : power gating state of the device
++ * @pg_in_transition : is device now in pg transition
+ * @pg_is_enabled : is power gating enabled
+
+ * @intr_clear : clear pending interrupts
+@@ -300,6 +301,7 @@ struct mei_hw_ops {
+
+ int (*fw_status)(struct mei_device *dev, struct mei_fw_status *fw_sts);
+ enum mei_pg_state (*pg_state)(struct mei_device *dev);
++ bool (*pg_in_transition)(struct mei_device *dev);
+ bool (*pg_is_enabled)(struct mei_device *dev);
+
+ void (*intr_clear)(struct mei_device *dev);
+@@ -398,11 +400,15 @@ struct mei_cl_device {
+ * @MEI_PG_EVENT_IDLE: the driver is not in power gating transition
+ * @MEI_PG_EVENT_WAIT: the driver is waiting for a pg event to complete
+ * @MEI_PG_EVENT_RECEIVED: the driver received pg event
++ * @MEI_PG_EVENT_INTR_WAIT: the driver is waiting for a pg event interrupt
++ * @MEI_PG_EVENT_INTR_RECEIVED: the driver received pg event interrupt
+ */
+ enum mei_pg_event {
+ MEI_PG_EVENT_IDLE,
+ MEI_PG_EVENT_WAIT,
+ MEI_PG_EVENT_RECEIVED,
++ MEI_PG_EVENT_INTR_WAIT,
++ MEI_PG_EVENT_INTR_RECEIVED,
+ };
+
+ /**
+@@ -717,6 +723,11 @@ static inline enum mei_pg_state mei_pg_state(struct mei_device *dev)
+ return dev->ops->pg_state(dev);
+ }
+
++static inline bool mei_pg_in_transition(struct mei_device *dev)
++{
++ return dev->ops->pg_in_transition(dev);
++}
++
+ static inline bool mei_pg_is_enabled(struct mei_device *dev)
+ {
+ return dev->ops->pg_is_enabled(dev);
+diff --git a/drivers/mtd/maps/dc21285.c b/drivers/mtd/maps/dc21285.c
+index f8a7dd14cee0..70a3db3ab856 100644
+--- a/drivers/mtd/maps/dc21285.c
++++ b/drivers/mtd/maps/dc21285.c
+@@ -38,9 +38,9 @@ static void nw_en_write(void)
+ * we want to write a bit pattern XXX1 to Xilinx to enable
+ * the write gate, which will be open for about the next 2ms.
+ */
+- spin_lock_irqsave(&nw_gpio_lock, flags);
++ raw_spin_lock_irqsave(&nw_gpio_lock, flags);
+ nw_cpld_modify(CPLD_FLASH_WR_ENABLE, CPLD_FLASH_WR_ENABLE);
+- spin_unlock_irqrestore(&nw_gpio_lock, flags);
++ raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
+
+ /*
+ * let the ISA bus to catch on...
+diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
+index 2b0c52870999..df7c6c70757a 100644
+--- a/drivers/mtd/mtd_blkdevs.c
++++ b/drivers/mtd/mtd_blkdevs.c
+@@ -197,6 +197,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
+ return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/
+
+ mutex_lock(&dev->lock);
++ mutex_lock(&mtd_table_mutex);
+
+ if (dev->open)
+ goto unlock;
+@@ -220,6 +221,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
+
+ unlock:
+ dev->open++;
++ mutex_unlock(&mtd_table_mutex);
+ mutex_unlock(&dev->lock);
+ blktrans_dev_put(dev);
+ return ret;
+@@ -230,6 +232,7 @@ error_release:
+ error_put:
+ module_put(dev->tr->owner);
+ kref_put(&dev->ref, blktrans_dev_release);
++ mutex_unlock(&mtd_table_mutex);
+ mutex_unlock(&dev->lock);
+ blktrans_dev_put(dev);
+ return ret;
+@@ -243,6 +246,7 @@ static void blktrans_release(struct gendisk *disk, fmode_t mode)
+ return;
+
+ mutex_lock(&dev->lock);
++ mutex_lock(&mtd_table_mutex);
+
+ if (--dev->open)
+ goto unlock;
+@@ -256,6 +260,7 @@ static void blktrans_release(struct gendisk *disk, fmode_t mode)
+ __put_mtd_device(dev->mtd);
+ }
+ unlock:
++ mutex_unlock(&mtd_table_mutex);
+ mutex_unlock(&dev->lock);
+ blktrans_dev_put(dev);
+ }
+diff --git a/drivers/of/address.c b/drivers/of/address.c
+index 78a7dcbec7d8..6906a3f61bd8 100644
+--- a/drivers/of/address.c
++++ b/drivers/of/address.c
+@@ -765,7 +765,7 @@ unsigned long __weak pci_address_to_pio(phys_addr_t address)
+ spin_lock(&io_range_lock);
+ list_for_each_entry(res, &io_range_list, list) {
+ if (address >= res->start && address < res->start + res->size) {
+- addr = res->start - address + offset;
++ addr = address - res->start + offset;
+ break;
+ }
+ offset += res->size;
+diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
+index 7a8f1c5e65af..73de4efcbe6e 100644
+--- a/drivers/pci/Kconfig
++++ b/drivers/pci/Kconfig
+@@ -1,6 +1,10 @@
+ #
+ # PCI configuration
+ #
++config PCI_BUS_ADDR_T_64BIT
++ def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT)
++ depends on PCI
++
+ config PCI_MSI
+ bool "Message Signaled Interrupts (MSI and MSI-X)"
+ depends on PCI
+diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
+index 90fa3a78fb7c..6fbd3f2b5992 100644
+--- a/drivers/pci/bus.c
++++ b/drivers/pci/bus.c
+@@ -92,11 +92,11 @@ void pci_bus_remove_resources(struct pci_bus *bus)
+ }
+
+ static struct pci_bus_region pci_32_bit = {0, 0xffffffffULL};
+-#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
++#ifdef CONFIG_PCI_BUS_ADDR_T_64BIT
+ static struct pci_bus_region pci_64_bit = {0,
+- (dma_addr_t) 0xffffffffffffffffULL};
+-static struct pci_bus_region pci_high = {(dma_addr_t) 0x100000000ULL,
+- (dma_addr_t) 0xffffffffffffffffULL};
++ (pci_bus_addr_t) 0xffffffffffffffffULL};
++static struct pci_bus_region pci_high = {(pci_bus_addr_t) 0x100000000ULL,
++ (pci_bus_addr_t) 0xffffffffffffffffULL};
+ #endif
+
+ /*
+@@ -200,7 +200,7 @@ int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
+ resource_size_t),
+ void *alignf_data)
+ {
+-#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
++#ifdef CONFIG_PCI_BUS_ADDR_T_64BIT
+ int rc;
+
+ if (res->flags & IORESOURCE_MEM_64) {
+diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
+index 0ebf754fc177..6d6868811e56 100644
+--- a/drivers/pci/hotplug/pciehp_hpc.c
++++ b/drivers/pci/hotplug/pciehp_hpc.c
+@@ -176,20 +176,17 @@ static void pcie_wait_cmd(struct controller *ctrl)
+ jiffies_to_msecs(jiffies - ctrl->cmd_started));
+ }
+
+-/**
+- * pcie_write_cmd - Issue controller command
+- * @ctrl: controller to which the command is issued
+- * @cmd: command value written to slot control register
+- * @mask: bitmask of slot control register to be modified
+- */
+-static void pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask)
++static void pcie_do_write_cmd(struct controller *ctrl, u16 cmd,
++ u16 mask, bool wait)
+ {
+ struct pci_dev *pdev = ctrl_dev(ctrl);
+ u16 slot_ctrl;
+
+ mutex_lock(&ctrl->ctrl_lock);
+
+- /* Wait for any previous command that might still be in progress */
++ /*
++ * Always wait for any previous command that might still be in progress
++ */
+ pcie_wait_cmd(ctrl);
+
+ pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &slot_ctrl);
+@@ -201,9 +198,33 @@ static void pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask)
+ ctrl->cmd_started = jiffies;
+ ctrl->slot_ctrl = slot_ctrl;
+
++ /*
++ * Optionally wait for the hardware to be ready for a new command,
++ * indicating completion of the above issued command.
++ */
++ if (wait)
++ pcie_wait_cmd(ctrl);
++
+ mutex_unlock(&ctrl->ctrl_lock);
+ }
+
++/**
++ * pcie_write_cmd - Issue controller command
++ * @ctrl: controller to which the command is issued
++ * @cmd: command value written to slot control register
++ * @mask: bitmask of slot control register to be modified
++ */
++static void pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask)
++{
++ pcie_do_write_cmd(ctrl, cmd, mask, true);
++}
++
++/* Same as above without waiting for the hardware to latch */
++static void pcie_write_cmd_nowait(struct controller *ctrl, u16 cmd, u16 mask)
++{
++ pcie_do_write_cmd(ctrl, cmd, mask, false);
++}
++
+ bool pciehp_check_link_active(struct controller *ctrl)
+ {
+ struct pci_dev *pdev = ctrl_dev(ctrl);
+@@ -422,7 +443,7 @@ void pciehp_set_attention_status(struct slot *slot, u8 value)
+ default:
+ return;
+ }
+- pcie_write_cmd(ctrl, slot_cmd, PCI_EXP_SLTCTL_AIC);
++ pcie_write_cmd_nowait(ctrl, slot_cmd, PCI_EXP_SLTCTL_AIC);
+ ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+ pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
+ }
+@@ -434,7 +455,8 @@ void pciehp_green_led_on(struct slot *slot)
+ if (!PWR_LED(ctrl))
+ return;
+
+- pcie_write_cmd(ctrl, PCI_EXP_SLTCTL_PWR_IND_ON, PCI_EXP_SLTCTL_PIC);
++ pcie_write_cmd_nowait(ctrl, PCI_EXP_SLTCTL_PWR_IND_ON,
++ PCI_EXP_SLTCTL_PIC);
+ ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+ pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL,
+ PCI_EXP_SLTCTL_PWR_IND_ON);
+@@ -447,7 +469,8 @@ void pciehp_green_led_off(struct slot *slot)
+ if (!PWR_LED(ctrl))
+ return;
+
+- pcie_write_cmd(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF, PCI_EXP_SLTCTL_PIC);
++ pcie_write_cmd_nowait(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
++ PCI_EXP_SLTCTL_PIC);
+ ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+ pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL,
+ PCI_EXP_SLTCTL_PWR_IND_OFF);
+@@ -460,7 +483,8 @@ void pciehp_green_led_blink(struct slot *slot)
+ if (!PWR_LED(ctrl))
+ return;
+
+- pcie_write_cmd(ctrl, PCI_EXP_SLTCTL_PWR_IND_BLINK, PCI_EXP_SLTCTL_PIC);
++ pcie_write_cmd_nowait(ctrl, PCI_EXP_SLTCTL_PWR_IND_BLINK,
++ PCI_EXP_SLTCTL_PIC);
+ ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+ pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL,
+ PCI_EXP_SLTCTL_PWR_IND_BLINK);
+@@ -613,7 +637,7 @@ void pcie_enable_notification(struct controller *ctrl)
+ PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE |
+ PCI_EXP_SLTCTL_DLLSCE);
+
+- pcie_write_cmd(ctrl, cmd, mask);
++ pcie_write_cmd_nowait(ctrl, cmd, mask);
+ ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+ pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, cmd);
+ }
+@@ -664,7 +688,7 @@ int pciehp_reset_slot(struct slot *slot, int probe)
+ pci_reset_bridge_secondary_bus(ctrl->pcie->port);
+
+ pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, stat_mask);
+- pcie_write_cmd(ctrl, ctrl_mask, ctrl_mask);
++ pcie_write_cmd_nowait(ctrl, ctrl_mask, ctrl_mask);
+ ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+ pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, ctrl_mask);
+ if (pciehp_poll_mode)
+diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
+index acc4b6ef78c4..c44393f26fd3 100644
+--- a/drivers/pci/pci.c
++++ b/drivers/pci/pci.c
+@@ -4324,6 +4324,17 @@ bool pci_device_is_present(struct pci_dev *pdev)
+ }
+ EXPORT_SYMBOL_GPL(pci_device_is_present);
+
++void pci_ignore_hotplug(struct pci_dev *dev)
++{
++ struct pci_dev *bridge = dev->bus->self;
++
++ dev->ignore_hotplug = 1;
++ /* Propagate the "ignore hotplug" setting to the parent bridge. */
++ if (bridge)
++ bridge->ignore_hotplug = 1;
++}
++EXPORT_SYMBOL_GPL(pci_ignore_hotplug);
++
+ #define RESOURCE_ALIGNMENT_PARAM_SIZE COMMAND_LINE_SIZE
+ static char resource_alignment_param[RESOURCE_ALIGNMENT_PARAM_SIZE] = {0};
+ static DEFINE_SPINLOCK(resource_alignment_lock);
+diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
+index 6675a7a1b9fc..c91185721345 100644
+--- a/drivers/pci/probe.c
++++ b/drivers/pci/probe.c
+@@ -254,8 +254,8 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
+ }
+
+ if (res->flags & IORESOURCE_MEM_64) {
+- if ((sizeof(dma_addr_t) < 8 || sizeof(resource_size_t) < 8) &&
+- sz64 > 0x100000000ULL) {
++ if ((sizeof(pci_bus_addr_t) < 8 || sizeof(resource_size_t) < 8)
++ && sz64 > 0x100000000ULL) {
+ res->flags |= IORESOURCE_UNSET | IORESOURCE_DISABLED;
+ res->start = 0;
+ res->end = 0;
+@@ -264,7 +264,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
+ goto out;
+ }
+
+- if ((sizeof(dma_addr_t) < 8) && l) {
++ if ((sizeof(pci_bus_addr_t) < 8) && l) {
+ /* Above 32-bit boundary; try to reallocate */
+ res->flags |= IORESOURCE_UNSET;
+ res->start = 0;
+@@ -399,7 +399,7 @@ static void pci_read_bridge_mmio_pref(struct pci_bus *child)
+ struct pci_dev *dev = child->self;
+ u16 mem_base_lo, mem_limit_lo;
+ u64 base64, limit64;
+- dma_addr_t base, limit;
++ pci_bus_addr_t base, limit;
+ struct pci_bus_region region;
+ struct resource *res;
+
+@@ -426,8 +426,8 @@ static void pci_read_bridge_mmio_pref(struct pci_bus *child)
+ }
+ }
+
+- base = (dma_addr_t) base64;
+- limit = (dma_addr_t) limit64;
++ base = (pci_bus_addr_t) base64;
++ limit = (pci_bus_addr_t) limit64;
+
+ if (base != base64) {
+ dev_err(&dev->dev, "can't handle bridge window above 4GB (bus address %#010llx)\n",
+diff --git a/drivers/pcmcia/topic.h b/drivers/pcmcia/topic.h
+index 615a45a8fe86..582688fe7505 100644
+--- a/drivers/pcmcia/topic.h
++++ b/drivers/pcmcia/topic.h
+@@ -104,6 +104,9 @@
+ #define TOPIC_EXCA_IF_CONTROL 0x3e /* 8 bit */
+ #define TOPIC_EXCA_IFC_33V_ENA 0x01
+
++#define TOPIC_PCI_CFG_PPBCN 0x3e /* 16-bit */
++#define TOPIC_PCI_CFG_PPBCN_WBEN 0x0400
++
+ static void topic97_zoom_video(struct pcmcia_socket *sock, int onoff)
+ {
+ struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
+@@ -138,6 +141,7 @@ static int topic97_override(struct yenta_socket *socket)
+ static int topic95_override(struct yenta_socket *socket)
+ {
+ u8 fctrl;
++ u16 ppbcn;
+
+ /* enable 3.3V support for 16bit cards */
+ fctrl = exca_readb(socket, TOPIC_EXCA_IF_CONTROL);
+@@ -146,6 +150,18 @@ static int topic95_override(struct yenta_socket *socket)
+ /* tell yenta to use exca registers to power 16bit cards */
+ socket->flags |= YENTA_16BIT_POWER_EXCA | YENTA_16BIT_POWER_DF;
+
++ /* Disable write buffers to prevent lockups under load with numerous
++ Cardbus cards, observed on Tecra 500CDT and reported elsewhere on the
++ net. This is not a power-on default according to the datasheet
++ but some BIOSes seem to set it. */
++ if (pci_read_config_word(socket->dev, TOPIC_PCI_CFG_PPBCN, &ppbcn) == 0
++ && socket->dev->revision <= 7
++ && (ppbcn & TOPIC_PCI_CFG_PPBCN_WBEN)) {
++ ppbcn &= ~TOPIC_PCI_CFG_PPBCN_WBEN;
++ pci_write_config_word(socket->dev, TOPIC_PCI_CFG_PPBCN, ppbcn);
++ dev_info(&socket->dev->dev, "Disabled ToPIC95 Cardbus write buffers.\n");
++ }
++
+ return 0;
+ }
+
+diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
+index 49c1720df59a..515f33882ab8 100644
+--- a/drivers/pnp/system.c
++++ b/drivers/pnp/system.c
+@@ -7,6 +7,7 @@
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ */
+
++#include <linux/acpi.h>
+ #include <linux/pnp.h>
+ #include <linux/device.h>
+ #include <linux/init.h>
+@@ -22,25 +23,41 @@ static const struct pnp_device_id pnp_dev_table[] = {
+ {"", 0}
+ };
+
++#ifdef CONFIG_ACPI
++static bool __reserve_range(u64 start, unsigned int length, bool io, char *desc)
++{
++ u8 space_id = io ? ACPI_ADR_SPACE_SYSTEM_IO : ACPI_ADR_SPACE_SYSTEM_MEMORY;
++ return !acpi_reserve_region(start, length, space_id, IORESOURCE_BUSY, desc);
++}
++#else
++static bool __reserve_range(u64 start, unsigned int length, bool io, char *desc)
++{
++ struct resource *res;
++
++ res = io ? request_region(start, length, desc) :
++ request_mem_region(start, length, desc);
++ if (res) {
++ res->flags &= ~IORESOURCE_BUSY;
++ return true;
++ }
++ return false;
++}
++#endif
++
+ static void reserve_range(struct pnp_dev *dev, struct resource *r, int port)
+ {
+ char *regionid;
+ const char *pnpid = dev_name(&dev->dev);
+ resource_size_t start = r->start, end = r->end;
+- struct resource *res;
++ bool reserved;
+
+ regionid = kmalloc(16, GFP_KERNEL);
+ if (!regionid)
+ return;
+
+ snprintf(regionid, 16, "pnp %s", pnpid);
+- if (port)
+- res = request_region(start, end - start + 1, regionid);
+- else
+- res = request_mem_region(start, end - start + 1, regionid);
+- if (res)
+- res->flags &= ~IORESOURCE_BUSY;
+- else
++ reserved = __reserve_range(start, end - start + 1, !!port, regionid);
++ if (!reserved)
+ kfree(regionid);
+
+ /*
+@@ -49,7 +66,7 @@ static void reserve_range(struct pnp_dev *dev, struct resource *r, int port)
+ * have double reservations.
+ */
+ dev_info(&dev->dev, "%pR %s reserved\n", r,
+- res ? "has been" : "could not be");
++ reserved ? "has been" : "could not be");
+ }
+
+ static void reserve_resources_of_dev(struct pnp_dev *dev)
+diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
+index 2ed4a4a6b3c5..4bc0c7f459a5 100644
+--- a/drivers/power/power_supply_core.c
++++ b/drivers/power/power_supply_core.c
+@@ -30,6 +30,8 @@ EXPORT_SYMBOL_GPL(power_supply_notifier);
+
+ static struct device_type power_supply_dev_type;
+
++#define POWER_SUPPLY_DEFERRED_REGISTER_TIME msecs_to_jiffies(10)
++
+ static bool __power_supply_is_supplied_by(struct power_supply *supplier,
+ struct power_supply *supply)
+ {
+@@ -121,6 +123,30 @@ void power_supply_changed(struct power_supply *psy)
+ }
+ EXPORT_SYMBOL_GPL(power_supply_changed);
+
++/*
++ * Notify that power supply was registered after parent finished the probing.
++ *
++ * Often power supply is registered from driver's probe function. However
++ * calling power_supply_changed() directly from power_supply_register()
++ * would lead to execution of get_property() function provided by the driver
++ * too early - before the probe ends.
++ *
++ * Avoid that by waiting on parent's mutex.
++ */
++static void power_supply_deferred_register_work(struct work_struct *work)
++{
++ struct power_supply *psy = container_of(work, struct power_supply,
++ deferred_register_work.work);
++
++ if (psy->dev.parent)
++ mutex_lock(&psy->dev.parent->mutex);
++
++ power_supply_changed(psy);
++
++ if (psy->dev.parent)
++ mutex_unlock(&psy->dev.parent->mutex);
++}
++
+ #ifdef CONFIG_OF
+ #include <linux/of.h>
+
+@@ -645,6 +671,10 @@ __power_supply_register(struct device *parent,
+ struct power_supply *psy;
+ int rc;
+
++ if (!parent)
++ pr_warn("%s: Expected proper parent device for '%s'\n",
++ __func__, desc->name);
++
+ psy = kzalloc(sizeof(*psy), GFP_KERNEL);
+ if (!psy)
+ return ERR_PTR(-ENOMEM);
+@@ -659,7 +689,6 @@ __power_supply_register(struct device *parent,
+ dev->release = power_supply_dev_release;
+ dev_set_drvdata(dev, psy);
+ psy->desc = desc;
+- atomic_inc(&psy->use_cnt);
+ if (cfg) {
+ psy->drv_data = cfg->drv_data;
+ psy->of_node = cfg->of_node;
+@@ -672,6 +701,8 @@ __power_supply_register(struct device *parent,
+ goto dev_set_name_failed;
+
+ INIT_WORK(&psy->changed_work, power_supply_changed_work);
++ INIT_DELAYED_WORK(&psy->deferred_register_work,
++ power_supply_deferred_register_work);
+
+ rc = power_supply_check_supplies(psy);
+ if (rc) {
+@@ -700,7 +731,20 @@ __power_supply_register(struct device *parent,
+ if (rc)
+ goto create_triggers_failed;
+
+- power_supply_changed(psy);
++ /*
++ * Update use_cnt after any uevents (most notably from device_add()).
++ * We are here still during driver's probe but
++ * the power_supply_uevent() calls back driver's get_property
++ * method so:
++ * 1. Driver did not assigned the returned struct power_supply,
++ * 2. Driver could not finish initialization (anything in its probe
++ * after calling power_supply_register()).
++ */
++ atomic_inc(&psy->use_cnt);
++
++ queue_delayed_work(system_power_efficient_wq,
++ &psy->deferred_register_work,
++ POWER_SUPPLY_DEFERRED_REGISTER_TIME);
+
+ return psy;
+
+@@ -720,7 +764,8 @@ dev_set_name_failed:
+
+ /**
+ * power_supply_register() - Register new power supply
+- * @parent: Device to be a parent of power supply's device
++ * @parent: Device to be a parent of power supply's device, usually
++ * the device which probe function calls this
+ * @desc: Description of power supply, must be valid through whole
+ * lifetime of this power supply
+ * @cfg: Run-time specific configuration accessed during registering,
+@@ -741,7 +786,8 @@ EXPORT_SYMBOL_GPL(power_supply_register);
+
+ /**
+ * power_supply_register() - Register new non-waking-source power supply
+- * @parent: Device to be a parent of power supply's device
++ * @parent: Device to be a parent of power supply's device, usually
++ * the device which probe function calls this
+ * @desc: Description of power supply, must be valid through whole
+ * lifetime of this power supply
+ * @cfg: Run-time specific configuration accessed during registering,
+@@ -770,7 +816,8 @@ static void devm_power_supply_release(struct device *dev, void *res)
+
+ /**
+ * power_supply_register() - Register managed power supply
+- * @parent: Device to be a parent of power supply's device
++ * @parent: Device to be a parent of power supply's device, usually
++ * the device which probe function calls this
+ * @desc: Description of power supply, must be valid through whole
+ * lifetime of this power supply
+ * @cfg: Run-time specific configuration accessed during registering,
+@@ -805,7 +852,8 @@ EXPORT_SYMBOL_GPL(devm_power_supply_register);
+
+ /**
+ * power_supply_register() - Register managed non-waking-source power supply
+- * @parent: Device to be a parent of power supply's device
++ * @parent: Device to be a parent of power supply's device, usually
++ * the device which probe function calls this
+ * @desc: Description of power supply, must be valid through whole
+ * lifetime of this power supply
+ * @cfg: Run-time specific configuration accessed during registering,
+@@ -849,6 +897,7 @@ void power_supply_unregister(struct power_supply *psy)
+ {
+ WARN_ON(atomic_dec_return(&psy->use_cnt));
+ cancel_work_sync(&psy->changed_work);
++ cancel_delayed_work_sync(&psy->deferred_register_work);
+ sysfs_remove_link(&psy->dev.kobj, "powers");
+ power_supply_remove_triggers(psy);
+ psy_unregister_cooler(psy);
+diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
+index 443eaab933fc..8a28116b5805 100644
+--- a/drivers/regulator/core.c
++++ b/drivers/regulator/core.c
+@@ -779,7 +779,7 @@ static int suspend_prepare(struct regulator_dev *rdev, suspend_state_t state)
+ static void print_constraints(struct regulator_dev *rdev)
+ {
+ struct regulation_constraints *constraints = rdev->constraints;
+- char buf[80] = "";
++ char buf[160] = "";
+ int count = 0;
+ int ret;
+
+diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c
+index 15fb1416bfbd..c064e32fb3b9 100644
+--- a/drivers/regulator/max77686.c
++++ b/drivers/regulator/max77686.c
+@@ -88,7 +88,7 @@ enum max77686_ramp_rate {
+ };
+
+ struct max77686_data {
+- u64 gpio_enabled:MAX77686_REGULATORS;
++ DECLARE_BITMAP(gpio_enabled, MAX77686_REGULATORS);
+
+ /* Array indexed by regulator id */
+ unsigned int opmode[MAX77686_REGULATORS];
+@@ -121,7 +121,7 @@ static unsigned int max77686_map_normal_mode(struct max77686_data *max77686,
+ case MAX77686_BUCK8:
+ case MAX77686_BUCK9:
+ case MAX77686_LDO20 ... MAX77686_LDO22:
+- if (max77686->gpio_enabled & (1 << id))
++ if (test_bit(id, max77686->gpio_enabled))
+ return MAX77686_GPIO_CONTROL;
+ }
+
+@@ -277,7 +277,7 @@ static int max77686_of_parse_cb(struct device_node *np,
+ }
+
+ if (gpio_is_valid(config->ena_gpio)) {
+- max77686->gpio_enabled |= (1 << desc->id);
++ set_bit(desc->id, max77686->gpio_enabled);
+
+ return regmap_update_bits(config->regmap, desc->enable_reg,
+ desc->enable_mask,
+diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
+index 47412cf4eaac..73790a1d0969 100644
+--- a/drivers/scsi/ipr.h
++++ b/drivers/scsi/ipr.h
+@@ -272,7 +272,7 @@
+ #define IPR_RUNTIME_RESET 0x40000000
+
+ #define IPR_IPL_INIT_MIN_STAGE_TIME 5
+-#define IPR_IPL_INIT_DEFAULT_STAGE_TIME 15
++#define IPR_IPL_INIT_DEFAULT_STAGE_TIME 30
+ #define IPR_IPL_INIT_STAGE_UNKNOWN 0x0
+ #define IPR_IPL_INIT_STAGE_TRANSOP 0xB0000000
+ #define IPR_IPL_INIT_STAGE_MASK 0xff000000
+diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c
+index ae45bd99baed..f115f67a6ba5 100644
+--- a/drivers/scsi/scsi_transport_srp.c
++++ b/drivers/scsi/scsi_transport_srp.c
+@@ -396,6 +396,36 @@ static void srp_reconnect_work(struct work_struct *work)
+ }
+ }
+
++/**
++ * scsi_request_fn_active() - number of kernel threads inside scsi_request_fn()
++ * @shost: SCSI host for which to count the number of scsi_request_fn() callers.
++ *
++ * To do: add support for scsi-mq in this function.
++ */
++static int scsi_request_fn_active(struct Scsi_Host *shost)
++{
++ struct scsi_device *sdev;
++ struct request_queue *q;
++ int request_fn_active = 0;
++
++ shost_for_each_device(sdev, shost) {
++ q = sdev->request_queue;
++
++ spin_lock_irq(q->queue_lock);
++ request_fn_active += q->request_fn_active;
++ spin_unlock_irq(q->queue_lock);
++ }
++
++ return request_fn_active;
++}
++
++/* Wait until ongoing shost->hostt->queuecommand() calls have finished. */
++static void srp_wait_for_queuecommand(struct Scsi_Host *shost)
++{
++ while (scsi_request_fn_active(shost))
++ msleep(20);
++}
++
+ static void __rport_fail_io_fast(struct srp_rport *rport)
+ {
+ struct Scsi_Host *shost = rport_to_shost(rport);
+@@ -409,8 +439,10 @@ static void __rport_fail_io_fast(struct srp_rport *rport)
+
+ /* Involve the LLD if possible to terminate all I/O on the rport. */
+ i = to_srp_internal(shost->transportt);
+- if (i->f->terminate_rport_io)
++ if (i->f->terminate_rport_io) {
++ srp_wait_for_queuecommand(shost);
+ i->f->terminate_rport_io(rport);
++ }
+ }
+
+ /**
+@@ -504,27 +536,6 @@ void srp_start_tl_fail_timers(struct srp_rport *rport)
+ EXPORT_SYMBOL(srp_start_tl_fail_timers);
+
+ /**
+- * scsi_request_fn_active() - number of kernel threads inside scsi_request_fn()
+- * @shost: SCSI host for which to count the number of scsi_request_fn() callers.
+- */
+-static int scsi_request_fn_active(struct Scsi_Host *shost)
+-{
+- struct scsi_device *sdev;
+- struct request_queue *q;
+- int request_fn_active = 0;
+-
+- shost_for_each_device(sdev, shost) {
+- q = sdev->request_queue;
+-
+- spin_lock_irq(q->queue_lock);
+- request_fn_active += q->request_fn_active;
+- spin_unlock_irq(q->queue_lock);
+- }
+-
+- return request_fn_active;
+-}
+-
+-/**
+ * srp_reconnect_rport() - reconnect to an SRP target port
+ * @rport: SRP target port.
+ *
+@@ -559,8 +570,7 @@ int srp_reconnect_rport(struct srp_rport *rport)
+ if (res)
+ goto out;
+ scsi_target_block(&shost->shost_gendev);
+- while (scsi_request_fn_active(shost))
+- msleep(20);
++ srp_wait_for_queuecommand(shost);
+ res = rport->state != SRP_RPORT_LOST ? i->f->reconnect(rport) : -ENODEV;
+ pr_debug("%s (state %d): transport.reconnect() returned %d\n",
+ dev_name(&shost->shost_gendev), rport->state, res);
+diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
+index 861664776672..ff97cabdaa81 100644
+--- a/drivers/spi/spi-orion.c
++++ b/drivers/spi/spi-orion.c
+@@ -61,6 +61,12 @@ enum orion_spi_type {
+
+ struct orion_spi_dev {
+ enum orion_spi_type typ;
++ /*
++ * min_divisor and max_hz should be exclusive, the only we can
++ * have both is for managing the armada-370-spi case with old
++ * device tree
++ */
++ unsigned long max_hz;
+ unsigned int min_divisor;
+ unsigned int max_divisor;
+ u32 prescale_mask;
+@@ -387,8 +393,9 @@ static const struct orion_spi_dev orion_spi_dev_data = {
+
+ static const struct orion_spi_dev armada_spi_dev_data = {
+ .typ = ARMADA_SPI,
+- .min_divisor = 1,
++ .min_divisor = 4,
+ .max_divisor = 1920,
++ .max_hz = 50000000,
+ .prescale_mask = ARMADA_SPI_CLK_PRESCALE_MASK,
+ };
+
+@@ -454,7 +461,21 @@ static int orion_spi_probe(struct platform_device *pdev)
+ goto out;
+
+ tclk_hz = clk_get_rate(spi->clk);
+- master->max_speed_hz = DIV_ROUND_UP(tclk_hz, devdata->min_divisor);
++
++ /*
++ * With old device tree, armada-370-spi could be used with
++ * Armada XP, however for this SoC the maximum frequency is
++ * 50MHz instead of tclk/4. On Armada 370, tclk cannot be
++ * higher than 200MHz. So, in order to be able to handle both
++ * SoCs, we can take the minimum of 50MHz and tclk/4.
++ */
++ if (of_device_is_compatible(pdev->dev.of_node,
++ "marvell,armada-370-spi"))
++ master->max_speed_hz = min(devdata->max_hz,
++ DIV_ROUND_UP(tclk_hz, devdata->min_divisor));
++ else
++ master->max_speed_hz =
++ DIV_ROUND_UP(tclk_hz, devdata->min_divisor);
+ master->min_speed_hz = DIV_ROUND_UP(tclk_hz, devdata->max_divisor);
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
+index 50910d85df5a..d35c1a13217c 100644
+--- a/drivers/spi/spi.c
++++ b/drivers/spi/spi.c
+@@ -988,9 +988,6 @@ void spi_finalize_current_message(struct spi_master *master)
+
+ spin_lock_irqsave(&master->queue_lock, flags);
+ mesg = master->cur_msg;
+- master->cur_msg = NULL;
+-
+- queue_kthread_work(&master->kworker, &master->pump_messages);
+ spin_unlock_irqrestore(&master->queue_lock, flags);
+
+ spi_unmap_msg(master, mesg);
+@@ -1003,9 +1000,13 @@ void spi_finalize_current_message(struct spi_master *master)
+ }
+ }
+
+- trace_spi_message_done(mesg);
+-
++ spin_lock_irqsave(&master->queue_lock, flags);
++ master->cur_msg = NULL;
+ master->cur_msg_prepared = false;
++ queue_kthread_work(&master->kworker, &master->pump_messages);
++ spin_unlock_irqrestore(&master->queue_lock, flags);
++
++ trace_spi_message_done(mesg);
+
+ mesg->state = NULL;
+ if (mesg->complete)
+diff --git a/drivers/video/fbdev/mxsfb.c b/drivers/video/fbdev/mxsfb.c
+index f8ac4a452f26..0f64165b0147 100644
+--- a/drivers/video/fbdev/mxsfb.c
++++ b/drivers/video/fbdev/mxsfb.c
+@@ -316,6 +316,18 @@ static int mxsfb_check_var(struct fb_var_screeninfo *var,
+ return 0;
+ }
+
++static inline void mxsfb_enable_axi_clk(struct mxsfb_info *host)
++{
++ if (host->clk_axi)
++ clk_prepare_enable(host->clk_axi);
++}
++
++static inline void mxsfb_disable_axi_clk(struct mxsfb_info *host)
++{
++ if (host->clk_axi)
++ clk_disable_unprepare(host->clk_axi);
++}
++
+ static void mxsfb_enable_controller(struct fb_info *fb_info)
+ {
+ struct mxsfb_info *host = to_imxfb_host(fb_info);
+@@ -333,14 +345,13 @@ static void mxsfb_enable_controller(struct fb_info *fb_info)
+ }
+ }
+
+- if (host->clk_axi)
+- clk_prepare_enable(host->clk_axi);
+-
+ if (host->clk_disp_axi)
+ clk_prepare_enable(host->clk_disp_axi);
+ clk_prepare_enable(host->clk);
+ clk_set_rate(host->clk, PICOS2KHZ(fb_info->var.pixclock) * 1000U);
+
++ mxsfb_enable_axi_clk(host);
++
+ /* if it was disabled, re-enable the mode again */
+ writel(CTRL_DOTCLK_MODE, host->base + LCDC_CTRL + REG_SET);
+
+@@ -380,11 +391,11 @@ static void mxsfb_disable_controller(struct fb_info *fb_info)
+ reg = readl(host->base + LCDC_VDCTRL4);
+ writel(reg & ~VDCTRL4_SYNC_SIGNALS_ON, host->base + LCDC_VDCTRL4);
+
++ mxsfb_disable_axi_clk(host);
++
+ clk_disable_unprepare(host->clk);
+ if (host->clk_disp_axi)
+ clk_disable_unprepare(host->clk_disp_axi);
+- if (host->clk_axi)
+- clk_disable_unprepare(host->clk_axi);
+
+ host->enabled = 0;
+
+@@ -421,6 +432,8 @@ static int mxsfb_set_par(struct fb_info *fb_info)
+ mxsfb_disable_controller(fb_info);
+ }
+
++ mxsfb_enable_axi_clk(host);
++
+ /* clear the FIFOs */
+ writel(CTRL1_FIFO_CLEAR, host->base + LCDC_CTRL1 + REG_SET);
+
+@@ -438,6 +451,7 @@ static int mxsfb_set_par(struct fb_info *fb_info)
+ ctrl |= CTRL_SET_WORD_LENGTH(3);
+ switch (host->ld_intf_width) {
+ case STMLCDIF_8BIT:
++ mxsfb_disable_axi_clk(host);
+ dev_err(&host->pdev->dev,
+ "Unsupported LCD bus width mapping\n");
+ return -EINVAL;
+@@ -451,6 +465,7 @@ static int mxsfb_set_par(struct fb_info *fb_info)
+ writel(CTRL1_SET_BYTE_PACKAGING(0x7), host->base + LCDC_CTRL1);
+ break;
+ default:
++ mxsfb_disable_axi_clk(host);
+ dev_err(&host->pdev->dev, "Unhandled color depth of %u\n",
+ fb_info->var.bits_per_pixel);
+ return -EINVAL;
+@@ -504,6 +519,8 @@ static int mxsfb_set_par(struct fb_info *fb_info)
+ fb_info->fix.line_length * fb_info->var.yoffset,
+ host->base + host->devdata->next_buf);
+
++ mxsfb_disable_axi_clk(host);
++
+ if (reenable)
+ mxsfb_enable_controller(fb_info);
+
+@@ -582,10 +599,14 @@ static int mxsfb_pan_display(struct fb_var_screeninfo *var,
+
+ offset = fb_info->fix.line_length * var->yoffset;
+
++ mxsfb_enable_axi_clk(host);
++
+ /* update on next VSYNC */
+ writel(fb_info->fix.smem_start + offset,
+ host->base + host->devdata->next_buf);
+
++ mxsfb_disable_axi_clk(host);
++
+ return 0;
+ }
+
+@@ -608,13 +629,17 @@ static int mxsfb_restore_mode(struct mxsfb_info *host,
+ unsigned line_count;
+ unsigned period;
+ unsigned long pa, fbsize;
+- int bits_per_pixel, ofs;
++ int bits_per_pixel, ofs, ret = 0;
+ u32 transfer_count, vdctrl0, vdctrl2, vdctrl3, vdctrl4, ctrl;
+
++ mxsfb_enable_axi_clk(host);
++
+ /* Only restore the mode when the controller is running */
+ ctrl = readl(host->base + LCDC_CTRL);
+- if (!(ctrl & CTRL_RUN))
+- return -EINVAL;
++ if (!(ctrl & CTRL_RUN)) {
++ ret = -EINVAL;
++ goto err;
++ }
+
+ vdctrl0 = readl(host->base + LCDC_VDCTRL0);
+ vdctrl2 = readl(host->base + LCDC_VDCTRL2);
+@@ -635,7 +660,8 @@ static int mxsfb_restore_mode(struct mxsfb_info *host,
+ break;
+ case 1:
+ default:
+- return -EINVAL;
++ ret = -EINVAL;
++ goto err;
+ }
+
+ fb_info->var.bits_per_pixel = bits_per_pixel;
+@@ -673,10 +699,14 @@ static int mxsfb_restore_mode(struct mxsfb_info *host,
+
+ pa = readl(host->base + host->devdata->cur_buf);
+ fbsize = fb_info->fix.line_length * vmode->yres;
+- if (pa < fb_info->fix.smem_start)
+- return -EINVAL;
+- if (pa + fbsize > fb_info->fix.smem_start + fb_info->fix.smem_len)
+- return -EINVAL;
++ if (pa < fb_info->fix.smem_start) {
++ ret = -EINVAL;
++ goto err;
++ }
++ if (pa + fbsize > fb_info->fix.smem_start + fb_info->fix.smem_len) {
++ ret = -EINVAL;
++ goto err;
++ }
+ ofs = pa - fb_info->fix.smem_start;
+ if (ofs) {
+ memmove(fb_info->screen_base, fb_info->screen_base + ofs, fbsize);
+@@ -689,7 +719,11 @@ static int mxsfb_restore_mode(struct mxsfb_info *host,
+ clk_prepare_enable(host->clk);
+ host->enabled = 1;
+
+- return 0;
++err:
++ if (ret)
++ mxsfb_disable_axi_clk(host);
++
++ return ret;
+ }
+
+ static int mxsfb_init_fbinfo_dt(struct mxsfb_info *host,
+@@ -915,7 +949,9 @@ static int mxsfb_probe(struct platform_device *pdev)
+ }
+
+ if (!host->enabled) {
++ mxsfb_enable_axi_clk(host);
+ writel(0, host->base + LCDC_CTRL);
++ mxsfb_disable_axi_clk(host);
+ mxsfb_set_par(fb_info);
+ mxsfb_enable_controller(fb_info);
+ }
+@@ -954,11 +990,15 @@ static void mxsfb_shutdown(struct platform_device *pdev)
+ struct fb_info *fb_info = platform_get_drvdata(pdev);
+ struct mxsfb_info *host = to_imxfb_host(fb_info);
+
++ mxsfb_enable_axi_clk(host);
++
+ /*
+ * Force stop the LCD controller as keeping it running during reboot
+ * might interfere with the BootROM's boot mode pads sampling.
+ */
+ writel(CTRL_RUN, host->base + LCDC_CTRL + REG_CLR);
++
++ mxsfb_disable_axi_clk(host);
+ }
+
+ static struct platform_driver mxsfb_driver = {
+diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
+index 537356742091..a8f3b589a2df 100644
+--- a/fs/configfs/mount.c
++++ b/fs/configfs/mount.c
+@@ -129,8 +129,6 @@ void configfs_release_fs(void)
+ }
+
+
+-static struct kobject *config_kobj;
+-
+ static int __init configfs_init(void)
+ {
+ int err = -ENOMEM;
+@@ -141,8 +139,8 @@ static int __init configfs_init(void)
+ if (!configfs_dir_cachep)
+ goto out;
+
+- config_kobj = kobject_create_and_add("config", kernel_kobj);
+- if (!config_kobj)
++ err = sysfs_create_mount_point(kernel_kobj, "config");
++ if (err)
+ goto out2;
+
+ err = register_filesystem(&configfs_fs_type);
+@@ -152,7 +150,7 @@ static int __init configfs_init(void)
+ return 0;
+ out3:
+ pr_err("Unable to register filesystem!\n");
+- kobject_put(config_kobj);
++ sysfs_remove_mount_point(kernel_kobj, "config");
+ out2:
+ kmem_cache_destroy(configfs_dir_cachep);
+ configfs_dir_cachep = NULL;
+@@ -163,7 +161,7 @@ out:
+ static void __exit configfs_exit(void)
+ {
+ unregister_filesystem(&configfs_fs_type);
+- kobject_put(config_kobj);
++ sysfs_remove_mount_point(kernel_kobj, "config");
+ kmem_cache_destroy(configfs_dir_cachep);
+ configfs_dir_cachep = NULL;
+ }
+diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
+index c1e7ffb0dab6..12756040ca20 100644
+--- a/fs/debugfs/inode.c
++++ b/fs/debugfs/inode.c
+@@ -716,20 +716,17 @@ bool debugfs_initialized(void)
+ }
+ EXPORT_SYMBOL_GPL(debugfs_initialized);
+
+-
+-static struct kobject *debug_kobj;
+-
+ static int __init debugfs_init(void)
+ {
+ int retval;
+
+- debug_kobj = kobject_create_and_add("debug", kernel_kobj);
+- if (!debug_kobj)
+- return -EINVAL;
++ retval = sysfs_create_mount_point(kernel_kobj, "debug");
++ if (retval)
++ return retval;
+
+ retval = register_filesystem(&debug_fs_type);
+ if (retval)
+- kobject_put(debug_kobj);
++ sysfs_remove_mount_point(kernel_kobj, "debug");
+ else
+ debugfs_registered = true;
+
+diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
+index 082ac1c97f39..18dacf9ed8ff 100644
+--- a/fs/fuse/inode.c
++++ b/fs/fuse/inode.c
+@@ -1238,7 +1238,6 @@ static void fuse_fs_cleanup(void)
+ }
+
+ static struct kobject *fuse_kobj;
+-static struct kobject *connections_kobj;
+
+ static int fuse_sysfs_init(void)
+ {
+@@ -1250,11 +1249,9 @@ static int fuse_sysfs_init(void)
+ goto out_err;
+ }
+
+- connections_kobj = kobject_create_and_add("connections", fuse_kobj);
+- if (!connections_kobj) {
+- err = -ENOMEM;
++ err = sysfs_create_mount_point(fuse_kobj, "connections");
++ if (err)
+ goto out_fuse_unregister;
+- }
+
+ return 0;
+
+@@ -1266,7 +1263,7 @@ static int fuse_sysfs_init(void)
+
+ static void fuse_sysfs_cleanup(void)
+ {
+- kobject_put(connections_kobj);
++ sysfs_remove_mount_point(fuse_kobj, "connections");
+ kobject_put(fuse_kobj);
+ }
+
+diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
+index fffca9517321..2d48d28e1640 100644
+--- a/fs/kernfs/dir.c
++++ b/fs/kernfs/dir.c
+@@ -592,6 +592,9 @@ int kernfs_add_one(struct kernfs_node *kn)
+ goto out_unlock;
+
+ ret = -ENOENT;
++ if (parent->flags & KERNFS_EMPTY_DIR)
++ goto out_unlock;
++
+ if ((parent->flags & KERNFS_ACTIVATED) && !kernfs_active(parent))
+ goto out_unlock;
+
+@@ -783,6 +786,38 @@ struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
+ return ERR_PTR(rc);
+ }
+
++/**
++ * kernfs_create_empty_dir - create an always empty directory
++ * @parent: parent in which to create a new directory
++ * @name: name of the new directory
++ *
++ * Returns the created node on success, ERR_PTR() value on failure.
++ */
++struct kernfs_node *kernfs_create_empty_dir(struct kernfs_node *parent,
++ const char *name)
++{
++ struct kernfs_node *kn;
++ int rc;
++
++ /* allocate */
++ kn = kernfs_new_node(parent, name, S_IRUGO|S_IXUGO|S_IFDIR, KERNFS_DIR);
++ if (!kn)
++ return ERR_PTR(-ENOMEM);
++
++ kn->flags |= KERNFS_EMPTY_DIR;
++ kn->dir.root = parent->dir.root;
++ kn->ns = NULL;
++ kn->priv = NULL;
++
++ /* link in */
++ rc = kernfs_add_one(kn);
++ if (!rc)
++ return kn;
++
++ kernfs_put(kn);
++ return ERR_PTR(rc);
++}
++
+ static struct dentry *kernfs_iop_lookup(struct inode *dir,
+ struct dentry *dentry,
+ unsigned int flags)
+@@ -1254,7 +1289,8 @@ int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent,
+ mutex_lock(&kernfs_mutex);
+
+ error = -ENOENT;
+- if (!kernfs_active(kn) || !kernfs_active(new_parent))
++ if (!kernfs_active(kn) || !kernfs_active(new_parent) ||
++ (new_parent->flags & KERNFS_EMPTY_DIR))
+ goto out;
+
+ error = 0;
+diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
+index 2da8493a380b..756dd56aaf60 100644
+--- a/fs/kernfs/inode.c
++++ b/fs/kernfs/inode.c
+@@ -296,6 +296,8 @@ static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode)
+ case KERNFS_DIR:
+ inode->i_op = &kernfs_dir_iops;
+ inode->i_fop = &kernfs_dir_fops;
++ if (kn->flags & KERNFS_EMPTY_DIR)
++ make_empty_dir_inode(inode);
+ break;
+ case KERNFS_FILE:
+ inode->i_size = kn->attr.size;
+diff --git a/fs/libfs.c b/fs/libfs.c
+index cb1fb4b9b637..02813592e121 100644
+--- a/fs/libfs.c
++++ b/fs/libfs.c
+@@ -1093,3 +1093,99 @@ simple_nosetlease(struct file *filp, long arg, struct file_lock **flp,
+ return -EINVAL;
+ }
+ EXPORT_SYMBOL(simple_nosetlease);
++
++
++/*
++ * Operations for a permanently empty directory.
++ */
++static struct dentry *empty_dir_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
++{
++ return ERR_PTR(-ENOENT);
++}
++
++static int empty_dir_getattr(struct vfsmount *mnt, struct dentry *dentry,
++ struct kstat *stat)
++{
++ struct inode *inode = d_inode(dentry);
++ generic_fillattr(inode, stat);
++ return 0;
++}
++
++static int empty_dir_setattr(struct dentry *dentry, struct iattr *attr)
++{
++ return -EPERM;
++}
++
++static int empty_dir_setxattr(struct dentry *dentry, const char *name,
++ const void *value, size_t size, int flags)
++{
++ return -EOPNOTSUPP;
++}
++
++static ssize_t empty_dir_getxattr(struct dentry *dentry, const char *name,
++ void *value, size_t size)
++{
++ return -EOPNOTSUPP;
++}
++
++static int empty_dir_removexattr(struct dentry *dentry, const char *name)
++{
++ return -EOPNOTSUPP;
++}
++
++static ssize_t empty_dir_listxattr(struct dentry *dentry, char *list, size_t size)
++{
++ return -EOPNOTSUPP;
++}
++
++static const struct inode_operations empty_dir_inode_operations = {
++ .lookup = empty_dir_lookup,
++ .permission = generic_permission,
++ .setattr = empty_dir_setattr,
++ .getattr = empty_dir_getattr,
++ .setxattr = empty_dir_setxattr,
++ .getxattr = empty_dir_getxattr,
++ .removexattr = empty_dir_removexattr,
++ .listxattr = empty_dir_listxattr,
++};
++
++static loff_t empty_dir_llseek(struct file *file, loff_t offset, int whence)
++{
++ /* An empty directory has two entries . and .. at offsets 0 and 1 */
++ return generic_file_llseek_size(file, offset, whence, 2, 2);
++}
++
++static int empty_dir_readdir(struct file *file, struct dir_context *ctx)
++{
++ dir_emit_dots(file, ctx);
++ return 0;
++}
++
++static const struct file_operations empty_dir_operations = {
++ .llseek = empty_dir_llseek,
++ .read = generic_read_dir,
++ .iterate = empty_dir_readdir,
++ .fsync = noop_fsync,
++};
++
++
++void make_empty_dir_inode(struct inode *inode)
++{
++ set_nlink(inode, 2);
++ inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
++ inode->i_uid = GLOBAL_ROOT_UID;
++ inode->i_gid = GLOBAL_ROOT_GID;
++ inode->i_rdev = 0;
++ inode->i_size = 2;
++ inode->i_blkbits = PAGE_SHIFT;
++ inode->i_blocks = 0;
++
++ inode->i_op = &empty_dir_inode_operations;
++ inode->i_fop = &empty_dir_operations;
++}
++
++bool is_empty_dir_inode(struct inode *inode)
++{
++ return (inode->i_fop == &empty_dir_operations) &&
++ (inode->i_op == &empty_dir_inode_operations);
++}
+diff --git a/fs/namespace.c b/fs/namespace.c
+index 1d4a97c573e0..02c6875dd945 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -2332,6 +2332,8 @@ unlock:
+ return err;
+ }
+
++static bool fs_fully_visible(struct file_system_type *fs_type, int *new_mnt_flags);
++
+ /*
+ * create a new mount for userspace and request it to be added into the
+ * namespace's tree
+@@ -2363,6 +2365,10 @@ static int do_new_mount(struct path *path, const char *fstype, int flags,
+ flags |= MS_NODEV;
+ mnt_flags |= MNT_NODEV | MNT_LOCK_NODEV;
+ }
++ if (type->fs_flags & FS_USERNS_VISIBLE) {
++ if (!fs_fully_visible(type, &mnt_flags))
++ return -EPERM;
++ }
+ }
+
+ mnt = vfs_kern_mount(type, flags, name, data);
+@@ -3164,9 +3170,10 @@ bool current_chrooted(void)
+ return chrooted;
+ }
+
+-bool fs_fully_visible(struct file_system_type *type)
++static bool fs_fully_visible(struct file_system_type *type, int *new_mnt_flags)
+ {
+ struct mnt_namespace *ns = current->nsproxy->mnt_ns;
++ int new_flags = *new_mnt_flags;
+ struct mount *mnt;
+ bool visible = false;
+
+@@ -3185,6 +3192,19 @@ bool fs_fully_visible(struct file_system_type *type)
+ if (mnt->mnt.mnt_root != mnt->mnt.mnt_sb->s_root)
+ continue;
+
++ /* Verify the mount flags are equal to or more permissive
++ * than the proposed new mount.
++ */
++ if ((mnt->mnt.mnt_flags & MNT_LOCK_READONLY) &&
++ !(new_flags & MNT_READONLY))
++ continue;
++ if ((mnt->mnt.mnt_flags & MNT_LOCK_NODEV) &&
++ !(new_flags & MNT_NODEV))
++ continue;
++ if ((mnt->mnt.mnt_flags & MNT_LOCK_ATIME) &&
++ ((mnt->mnt.mnt_flags & MNT_ATIME_MASK) != (new_flags & MNT_ATIME_MASK)))
++ continue;
++
+ /* This mount is not fully visible if there are any
+ * locked child mounts that cover anything except for
+ * empty directories.
+@@ -3194,11 +3214,14 @@ bool fs_fully_visible(struct file_system_type *type)
+ /* Only worry about locked mounts */
+ if (!(mnt->mnt.mnt_flags & MNT_LOCKED))
+ continue;
+- if (!S_ISDIR(inode->i_mode))
+- goto next;
+- if (inode->i_nlink > 2)
++ /* Is the directory permanetly empty? */
++ if (!is_empty_dir_inode(inode))
+ goto next;
+ }
++ /* Preserve the locked attributes */
++ *new_mnt_flags |= mnt->mnt.mnt_flags & (MNT_LOCK_READONLY | \
++ MNT_LOCK_NODEV | \
++ MNT_LOCK_ATIME);
+ visible = true;
+ goto found;
+ next: ;
+diff --git a/fs/proc/generic.c b/fs/proc/generic.c
+index df6327a2b865..e5dee5c3188e 100644
+--- a/fs/proc/generic.c
++++ b/fs/proc/generic.c
+@@ -373,6 +373,10 @@ static struct proc_dir_entry *__proc_create(struct proc_dir_entry **parent,
+ WARN(1, "create '/proc/%s' by hand\n", qstr.name);
+ return NULL;
+ }
++ if (is_empty_pde(*parent)) {
++ WARN(1, "attempt to add to permanently empty directory");
++ return NULL;
++ }
+
+ ent = kzalloc(sizeof(struct proc_dir_entry) + qstr.len + 1, GFP_KERNEL);
+ if (!ent)
+@@ -455,6 +459,25 @@ struct proc_dir_entry *proc_mkdir(const char *name,
+ }
+ EXPORT_SYMBOL(proc_mkdir);
+
++struct proc_dir_entry *proc_create_mount_point(const char *name)
++{
++ umode_t mode = S_IFDIR | S_IRUGO | S_IXUGO;
++ struct proc_dir_entry *ent, *parent = NULL;
++
++ ent = __proc_create(&parent, name, mode, 2);
++ if (ent) {
++ ent->data = NULL;
++ ent->proc_fops = NULL;
++ ent->proc_iops = NULL;
++ if (proc_register(parent, ent) < 0) {
++ kfree(ent);
++ parent->nlink--;
++ ent = NULL;
++ }
++ }
++ return ent;
++}
++
+ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
+ struct proc_dir_entry *parent,
+ const struct file_operations *proc_fops,
+diff --git a/fs/proc/inode.c b/fs/proc/inode.c
+index 8272aaba1bb0..e3eb5524639f 100644
+--- a/fs/proc/inode.c
++++ b/fs/proc/inode.c
+@@ -423,6 +423,10 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+ PROC_I(inode)->pde = de;
+
++ if (is_empty_pde(de)) {
++ make_empty_dir_inode(inode);
++ return inode;
++ }
+ if (de->mode) {
+ inode->i_mode = de->mode;
+ inode->i_uid = de->uid;
+diff --git a/fs/proc/internal.h b/fs/proc/internal.h
+index c835b94c0cd3..aa2781095bd1 100644
+--- a/fs/proc/internal.h
++++ b/fs/proc/internal.h
+@@ -191,6 +191,12 @@ static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
+ }
+ extern void pde_put(struct proc_dir_entry *);
+
++static inline bool is_empty_pde(const struct proc_dir_entry *pde)
++{
++ return S_ISDIR(pde->mode) && !pde->proc_iops;
++}
++struct proc_dir_entry *proc_create_mount_point(const char *name);
++
+ /*
+ * inode.c
+ */
+diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
+index fea2561d773b..fdda62e6115e 100644
+--- a/fs/proc/proc_sysctl.c
++++ b/fs/proc/proc_sysctl.c
+@@ -19,6 +19,28 @@ static const struct inode_operations proc_sys_inode_operations;
+ static const struct file_operations proc_sys_dir_file_operations;
+ static const struct inode_operations proc_sys_dir_operations;
+
++/* Support for permanently empty directories */
++
++struct ctl_table sysctl_mount_point[] = {
++ { }
++};
++
++static bool is_empty_dir(struct ctl_table_header *head)
++{
++ return head->ctl_table[0].child == sysctl_mount_point;
++}
++
++static void set_empty_dir(struct ctl_dir *dir)
++{
++ dir->header.ctl_table[0].child = sysctl_mount_point;
++}
++
++static void clear_empty_dir(struct ctl_dir *dir)
++
++{
++ dir->header.ctl_table[0].child = NULL;
++}
++
+ void proc_sys_poll_notify(struct ctl_table_poll *poll)
+ {
+ if (!poll)
+@@ -187,6 +209,17 @@ static int insert_header(struct ctl_dir *dir, struct ctl_table_header *header)
+ struct ctl_table *entry;
+ int err;
+
++ /* Is this a permanently empty directory? */
++ if (is_empty_dir(&dir->header))
++ return -EROFS;
++
++ /* Am I creating a permanently empty directory? */
++ if (header->ctl_table == sysctl_mount_point) {
++ if (!RB_EMPTY_ROOT(&dir->root))
++ return -EINVAL;
++ set_empty_dir(dir);
++ }
++
+ dir->header.nreg++;
+ header->parent = dir;
+ err = insert_links(header);
+@@ -202,6 +235,8 @@ fail:
+ erase_header(header);
+ put_links(header);
+ fail_links:
++ if (header->ctl_table == sysctl_mount_point)
++ clear_empty_dir(dir);
+ header->parent = NULL;
+ drop_sysctl_table(&dir->header);
+ return err;
+@@ -419,6 +454,8 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
+ inode->i_mode |= S_IFDIR;
+ inode->i_op = &proc_sys_dir_operations;
+ inode->i_fop = &proc_sys_dir_file_operations;
++ if (is_empty_dir(head))
++ make_empty_dir_inode(inode);
+ }
+ out:
+ return inode;
+diff --git a/fs/proc/root.c b/fs/proc/root.c
+index b7fa4bfe896a..68feb0f70e63 100644
+--- a/fs/proc/root.c
++++ b/fs/proc/root.c
+@@ -112,9 +112,6 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
+ ns = task_active_pid_ns(current);
+ options = data;
+
+- if (!capable(CAP_SYS_ADMIN) && !fs_fully_visible(fs_type))
+- return ERR_PTR(-EPERM);
+-
+ /* Does the mounter have privilege over the pid namespace? */
+ if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN))
+ return ERR_PTR(-EPERM);
+@@ -159,7 +156,7 @@ static struct file_system_type proc_fs_type = {
+ .name = "proc",
+ .mount = proc_mount,
+ .kill_sb = proc_kill_sb,
+- .fs_flags = FS_USERNS_MOUNT,
++ .fs_flags = FS_USERNS_VISIBLE | FS_USERNS_MOUNT,
+ };
+
+ void __init proc_root_init(void)
+@@ -182,10 +179,10 @@ void __init proc_root_init(void)
+ #endif
+ proc_mkdir("fs", NULL);
+ proc_mkdir("driver", NULL);
+- proc_mkdir("fs/nfsd", NULL); /* somewhere for the nfsd filesystem to be mounted */
++ proc_create_mount_point("fs/nfsd"); /* somewhere for the nfsd filesystem to be mounted */
+ #if defined(CONFIG_SUN_OPENPROMFS) || defined(CONFIG_SUN_OPENPROMFS_MODULE)
+ /* just give it a mountpoint */
+- proc_mkdir("openprom", NULL);
++ proc_create_mount_point("openprom");
+ #endif
+ proc_tty_init();
+ proc_mkdir("bus", NULL);
+diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
+index dc43b5f29305..3adcc4669fac 100644
+--- a/fs/pstore/inode.c
++++ b/fs/pstore/inode.c
+@@ -461,22 +461,18 @@ static struct file_system_type pstore_fs_type = {
+ .kill_sb = pstore_kill_sb,
+ };
+
+-static struct kobject *pstore_kobj;
+-
+ static int __init init_pstore_fs(void)
+ {
+- int err = 0;
++ int err;
+
+ /* Create a convenient mount point for people to access pstore */
+- pstore_kobj = kobject_create_and_add("pstore", fs_kobj);
+- if (!pstore_kobj) {
+- err = -ENOMEM;
++ err = sysfs_create_mount_point(fs_kobj, "pstore");
++ if (err)
+ goto out;
+- }
+
+ err = register_filesystem(&pstore_fs_type);
+ if (err < 0)
+- kobject_put(pstore_kobj);
++ sysfs_remove_mount_point(fs_kobj, "pstore");
+
+ out:
+ return err;
+diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
+index 0b45ff42f374..94374e435025 100644
+--- a/fs/sysfs/dir.c
++++ b/fs/sysfs/dir.c
+@@ -121,3 +121,37 @@ int sysfs_move_dir_ns(struct kobject *kobj, struct kobject *new_parent_kobj,
+
+ return kernfs_rename_ns(kn, new_parent, kn->name, new_ns);
+ }
++
++/**
++ * sysfs_create_mount_point - create an always empty directory
++ * @parent_kobj: kobject that will contain this always empty directory
++ * @name: The name of the always empty directory to add
++ */
++int sysfs_create_mount_point(struct kobject *parent_kobj, const char *name)
++{
++ struct kernfs_node *kn, *parent = parent_kobj->sd;
++
++ kn = kernfs_create_empty_dir(parent, name);
++ if (IS_ERR(kn)) {
++ if (PTR_ERR(kn) == -EEXIST)
++ sysfs_warn_dup(parent, name);
++ return PTR_ERR(kn);
++ }
++
++ return 0;
++}
++EXPORT_SYMBOL_GPL(sysfs_create_mount_point);
++
++/**
++ * sysfs_remove_mount_point - remove an always empty directory.
++ * @parent_kobj: kobject that will contain this always empty directory
++ * @name: The name of the always empty directory to remove
++ *
++ */
++void sysfs_remove_mount_point(struct kobject *parent_kobj, const char *name)
++{
++ struct kernfs_node *parent = parent_kobj->sd;
++
++ kernfs_remove_by_name_ns(parent, name, NULL);
++}
++EXPORT_SYMBOL_GPL(sysfs_remove_mount_point);
+diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
+index 8a49486bf30c..1c6ac6fcee9f 100644
+--- a/fs/sysfs/mount.c
++++ b/fs/sysfs/mount.c
+@@ -31,9 +31,6 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
+ bool new_sb;
+
+ if (!(flags & MS_KERNMOUNT)) {
+- if (!capable(CAP_SYS_ADMIN) && !fs_fully_visible(fs_type))
+- return ERR_PTR(-EPERM);
+-
+ if (!kobj_ns_current_may_mount(KOBJ_NS_TYPE_NET))
+ return ERR_PTR(-EPERM);
+ }
+@@ -58,7 +55,7 @@ static struct file_system_type sysfs_fs_type = {
+ .name = "sysfs",
+ .mount = sysfs_mount,
+ .kill_sb = sysfs_kill_sb,
+- .fs_flags = FS_USERNS_MOUNT,
++ .fs_flags = FS_USERNS_VISIBLE | FS_USERNS_MOUNT,
+ };
+
+ int __init sysfs_init(void)
+diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c
+index d92bdf3b079a..a43df11a163f 100644
+--- a/fs/tracefs/inode.c
++++ b/fs/tracefs/inode.c
+@@ -631,14 +631,12 @@ bool tracefs_initialized(void)
+ return tracefs_registered;
+ }
+
+-static struct kobject *trace_kobj;
+-
+ static int __init tracefs_init(void)
+ {
+ int retval;
+
+- trace_kobj = kobject_create_and_add("tracing", kernel_kobj);
+- if (!trace_kobj)
++ retval = sysfs_create_mount_point(kernel_kobj, "tracing");
++ if (retval)
+ return -EINVAL;
+
+ retval = register_filesystem(&trace_fs_type);
+diff --git a/include/linux/acpi.h b/include/linux/acpi.h
+index e4da5e35e29c..5da2d2e9d38e 100644
+--- a/include/linux/acpi.h
++++ b/include/linux/acpi.h
+@@ -332,6 +332,9 @@ int acpi_check_region(resource_size_t start, resource_size_t n,
+
+ int acpi_resources_are_enforced(void);
+
++int acpi_reserve_region(u64 start, unsigned int length, u8 space_id,
++ unsigned long flags, char *desc);
++
+ #ifdef CONFIG_HIBERNATION
+ void __init acpi_no_s4_hw_signature(void);
+ #endif
+@@ -440,6 +443,7 @@ extern acpi_status acpi_pci_osc_control_set(acpi_handle handle,
+ #define ACPI_OST_SC_INSERT_NOT_SUPPORTED 0x82
+
+ extern void acpi_early_init(void);
++extern void acpi_subsystem_init(void);
+
+ extern int acpi_nvs_register(__u64 start, __u64 size);
+
+@@ -494,6 +498,7 @@ static inline const char *acpi_dev_name(struct acpi_device *adev)
+ }
+
+ static inline void acpi_early_init(void) { }
++static inline void acpi_subsystem_init(void) { }
+
+ static inline int early_acpi_boot_init(void)
+ {
+@@ -525,6 +530,13 @@ static inline int acpi_check_region(resource_size_t start, resource_size_t n,
+ return 0;
+ }
+
++static inline int acpi_reserve_region(u64 start, unsigned int length,
++ u8 space_id, unsigned long flags,
++ char *desc)
++{
++ return -ENXIO;
++}
++
+ struct acpi_table_header;
+ static inline int acpi_table_parse(char *id,
+ int (*handler)(struct acpi_table_header *))
+diff --git a/include/linux/fs.h b/include/linux/fs.h
+index 35ec87e490b1..571aab91bfc0 100644
+--- a/include/linux/fs.h
++++ b/include/linux/fs.h
+@@ -1897,6 +1897,7 @@ struct file_system_type {
+ #define FS_HAS_SUBTYPE 4
+ #define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */
+ #define FS_USERNS_DEV_MOUNT 16 /* A userns mount does not imply MNT_NODEV */
++#define FS_USERNS_VISIBLE 32 /* FS must already be visible */
+ #define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */
+ struct dentry *(*mount) (struct file_system_type *, int,
+ const char *, void *);
+@@ -1984,7 +1985,6 @@ extern int vfs_ustat(dev_t, struct kstatfs *);
+ extern int freeze_super(struct super_block *super);
+ extern int thaw_super(struct super_block *super);
+ extern bool our_mnt(struct vfsmount *mnt);
+-extern bool fs_fully_visible(struct file_system_type *);
+
+ extern int current_umask(void);
+
+@@ -2780,6 +2780,8 @@ extern struct dentry *simple_lookup(struct inode *, struct dentry *, unsigned in
+ extern ssize_t generic_read_dir(struct file *, char __user *, size_t, loff_t *);
+ extern const struct file_operations simple_dir_operations;
+ extern const struct inode_operations simple_dir_inode_operations;
++extern void make_empty_dir_inode(struct inode *inode);
++extern bool is_empty_dir_inode(struct inode *inode);
+ struct tree_descr { char *name; const struct file_operations *ops; int mode; };
+ struct dentry *d_alloc_name(struct dentry *, const char *);
+ extern int simple_fill_super(struct super_block *, unsigned long, struct tree_descr *);
+diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
+index 71ecdab1671b..29d1896c3ba5 100644
+--- a/include/linux/kernfs.h
++++ b/include/linux/kernfs.h
+@@ -45,6 +45,7 @@ enum kernfs_node_flag {
+ KERNFS_LOCKDEP = 0x0100,
+ KERNFS_SUICIDAL = 0x0400,
+ KERNFS_SUICIDED = 0x0800,
++ KERNFS_EMPTY_DIR = 0x1000,
+ };
+
+ /* @flags for kernfs_create_root() */
+@@ -285,6 +286,8 @@ void kernfs_destroy_root(struct kernfs_root *root);
+ struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
+ const char *name, umode_t mode,
+ void *priv, const void *ns);
++struct kernfs_node *kernfs_create_empty_dir(struct kernfs_node *parent,
++ const char *name);
+ struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
+ const char *name,
+ umode_t mode, loff_t size,
+diff --git a/include/linux/kmemleak.h b/include/linux/kmemleak.h
+index e705467ddb47..d0a1f99e24e3 100644
+--- a/include/linux/kmemleak.h
++++ b/include/linux/kmemleak.h
+@@ -28,7 +28,8 @@
+ extern void kmemleak_init(void) __ref;
+ extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
+ gfp_t gfp) __ref;
+-extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size) __ref;
++extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
++ gfp_t gfp) __ref;
+ extern void kmemleak_free(const void *ptr) __ref;
+ extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
+ extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
+@@ -71,7 +72,8 @@ static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
+ gfp_t gfp)
+ {
+ }
+-static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size)
++static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
++ gfp_t gfp)
+ {
+ }
+ static inline void kmemleak_free(const void *ptr)
+diff --git a/include/linux/pci.h b/include/linux/pci.h
+index 353db8dc4c6e..3ef3a52068df 100644
+--- a/include/linux/pci.h
++++ b/include/linux/pci.h
+@@ -577,9 +577,15 @@ int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 val);
+
++#ifdef CONFIG_PCI_BUS_ADDR_T_64BIT
++typedef u64 pci_bus_addr_t;
++#else
++typedef u32 pci_bus_addr_t;
++#endif
++
+ struct pci_bus_region {
+- dma_addr_t start;
+- dma_addr_t end;
++ pci_bus_addr_t start;
++ pci_bus_addr_t end;
+ };
+
+ struct pci_dynids {
+@@ -1006,6 +1012,7 @@ int __must_check pci_assign_resource(struct pci_dev *dev, int i);
+ int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align);
+ int pci_select_bars(struct pci_dev *dev, unsigned long flags);
+ bool pci_device_is_present(struct pci_dev *pdev);
++void pci_ignore_hotplug(struct pci_dev *dev);
+
+ /* ROM control related routines */
+ int pci_enable_rom(struct pci_dev *pdev);
+@@ -1043,11 +1050,6 @@ bool pci_dev_run_wake(struct pci_dev *dev);
+ bool pci_check_pme_status(struct pci_dev *dev);
+ void pci_pme_wakeup_bus(struct pci_bus *bus);
+
+-static inline void pci_ignore_hotplug(struct pci_dev *dev)
+-{
+- dev->ignore_hotplug = 1;
+-}
+-
+ static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
+ bool enable)
+ {
+@@ -1128,7 +1130,7 @@ int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
+
+ int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr);
+
+-static inline dma_addr_t pci_bus_address(struct pci_dev *pdev, int bar)
++static inline pci_bus_addr_t pci_bus_address(struct pci_dev *pdev, int bar)
+ {
+ struct pci_bus_region region;
+
+diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
+index 75a1dd8dc56e..a80f1fd01ddb 100644
+--- a/include/linux/power_supply.h
++++ b/include/linux/power_supply.h
+@@ -237,6 +237,7 @@ struct power_supply {
+ /* private */
+ struct device dev;
+ struct work_struct changed_work;
++ struct delayed_work deferred_register_work;
+ spinlock_t changed_lock;
+ bool changed;
+ atomic_t use_cnt;
+diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
+index 795d5fea5697..fa7bc29925c9 100644
+--- a/include/linux/sysctl.h
++++ b/include/linux/sysctl.h
+@@ -188,6 +188,9 @@ struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
+ void unregister_sysctl_table(struct ctl_table_header * table);
+
+ extern int sysctl_init(void);
++
++extern struct ctl_table sysctl_mount_point[];
++
+ #else /* CONFIG_SYSCTL */
+ static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
+ {
+diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
+index 99382c0df17e..9f65758311a4 100644
+--- a/include/linux/sysfs.h
++++ b/include/linux/sysfs.h
+@@ -210,6 +210,10 @@ int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name,
+ int __must_check sysfs_move_dir_ns(struct kobject *kobj,
+ struct kobject *new_parent_kobj,
+ const void *new_ns);
++int __must_check sysfs_create_mount_point(struct kobject *parent_kobj,
++ const char *name);
++void sysfs_remove_mount_point(struct kobject *parent_kobj,
++ const char *name);
+
+ int __must_check sysfs_create_file_ns(struct kobject *kobj,
+ const struct attribute *attr,
+@@ -298,6 +302,17 @@ static inline int sysfs_move_dir_ns(struct kobject *kobj,
+ return 0;
+ }
+
++static inline int sysfs_create_mount_point(struct kobject *parent_kobj,
++ const char *name)
++{
++ return 0;
++}
++
++static inline void sysfs_remove_mount_point(struct kobject *parent_kobj,
++ const char *name)
++{
++}
++
+ static inline int sysfs_create_file_ns(struct kobject *kobj,
+ const struct attribute *attr,
+ const void *ns)
+diff --git a/include/linux/types.h b/include/linux/types.h
+index 59698be03490..8715287c3b1f 100644
+--- a/include/linux/types.h
++++ b/include/linux/types.h
+@@ -139,12 +139,20 @@ typedef unsigned long blkcnt_t;
+ */
+ #define pgoff_t unsigned long
+
+-/* A dma_addr_t can hold any valid DMA or bus address for the platform */
++/*
++ * A dma_addr_t can hold any valid DMA address, i.e., any address returned
++ * by the DMA API.
++ *
++ * If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32
++ * bits wide. Bus addresses, e.g., PCI BARs, may be wider than 32 bits,
++ * but drivers do memory-mapped I/O to ioremapped kernel virtual addresses,
++ * so they don't care about the size of the actual bus addresses.
++ */
+ #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+ typedef u64 dma_addr_t;
+ #else
+ typedef u32 dma_addr_t;
+-#endif /* dma_addr_t */
++#endif
+
+ typedef unsigned __bitwise__ gfp_t;
+ typedef unsigned __bitwise__ fmode_t;
+diff --git a/init/main.c b/init/main.c
+index 2115055faeac..2a89545e0a5d 100644
+--- a/init/main.c
++++ b/init/main.c
+@@ -664,6 +664,7 @@ asmlinkage __visible void __init start_kernel(void)
+
+ check_bugs();
+
++ acpi_subsystem_init();
+ sfi_init_late();
+
+ if (efi_enabled(EFI_RUNTIME_SERVICES)) {
+diff --git a/kernel/cgroup.c b/kernel/cgroup.c
+index 469dd547770c..e8a5491be756 100644
+--- a/kernel/cgroup.c
++++ b/kernel/cgroup.c
+@@ -1924,8 +1924,6 @@ static struct file_system_type cgroup_fs_type = {
+ .kill_sb = cgroup_kill_sb,
+ };
+
+-static struct kobject *cgroup_kobj;
+-
+ /**
+ * task_cgroup_path - cgroup path of a task in the first cgroup hierarchy
+ * @task: target task
+@@ -5044,13 +5042,13 @@ int __init cgroup_init(void)
+ ss->bind(init_css_set.subsys[ssid]);
+ }
+
+- cgroup_kobj = kobject_create_and_add("cgroup", fs_kobj);
+- if (!cgroup_kobj)
+- return -ENOMEM;
++ err = sysfs_create_mount_point(fs_kobj, "cgroup");
++ if (err)
++ return err;
+
+ err = register_filesystem(&cgroup_fs_type);
+ if (err < 0) {
+- kobject_put(cgroup_kobj);
++ sysfs_remove_mount_point(fs_kobj, "cgroup");
+ return err;
+ }
+
+diff --git a/kernel/irq/devres.c b/kernel/irq/devres.c
+index d5d0f7345c54..74d90a754268 100644
+--- a/kernel/irq/devres.c
++++ b/kernel/irq/devres.c
+@@ -104,7 +104,7 @@ int devm_request_any_context_irq(struct device *dev, unsigned int irq,
+ return -ENOMEM;
+
+ rc = request_any_context_irq(irq, handler, irqflags, devname, dev_id);
+- if (rc) {
++ if (rc < 0) {
+ devres_free(dr);
+ return rc;
+ }
+@@ -113,7 +113,7 @@ int devm_request_any_context_irq(struct device *dev, unsigned int irq,
+ dr->dev_id = dev_id;
+ devres_add(dev, dr);
+
+- return 0;
++ return rc;
+ }
+ EXPORT_SYMBOL(devm_request_any_context_irq);
+
+diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
+index 284e2691e380..9ec555732f1a 100644
+--- a/kernel/livepatch/core.c
++++ b/kernel/livepatch/core.c
+@@ -179,7 +179,9 @@ static int klp_find_object_symbol(const char *objname, const char *name,
+ .count = 0
+ };
+
++ mutex_lock(&module_mutex);
+ kallsyms_on_each_symbol(klp_find_callback, &args);
++ mutex_unlock(&module_mutex);
+
+ if (args.count == 0)
+ pr_err("symbol '%s' not found in symbol table\n", name);
+@@ -219,13 +221,19 @@ static int klp_verify_vmlinux_symbol(const char *name, unsigned long addr)
+ .name = name,
+ .addr = addr,
+ };
++ int ret;
+
+- if (kallsyms_on_each_symbol(klp_verify_callback, &args))
+- return 0;
++ mutex_lock(&module_mutex);
++ ret = kallsyms_on_each_symbol(klp_verify_callback, &args);
++ mutex_unlock(&module_mutex);
+
+- pr_err("symbol '%s' not found at specified address 0x%016lx, kernel mismatch?\n",
+- name, addr);
+- return -EINVAL;
++ if (!ret) {
++ pr_err("symbol '%s' not found at specified address 0x%016lx, kernel mismatch?\n",
++ name, addr);
++ return -EINVAL;
++ }
++
++ return 0;
+ }
+
+ static int klp_find_verify_func_addr(struct klp_object *obj,
+diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
+index 069742d61c68..ec3086879cb5 100644
+--- a/kernel/rcu/tiny.c
++++ b/kernel/rcu/tiny.c
+@@ -170,6 +170,11 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp)
+
+ /* Move the ready-to-invoke callbacks to a local list. */
+ local_irq_save(flags);
++ if (rcp->donetail == &rcp->rcucblist) {
++ /* No callbacks ready, so just leave. */
++ local_irq_restore(flags);
++ return;
++ }
+ RCU_TRACE(trace_rcu_batch_start(rcp->name, 0, rcp->qlen, -1));
+ list = rcp->rcucblist;
+ rcp->rcucblist = *rcp->donetail;
+diff --git a/kernel/sysctl.c b/kernel/sysctl.c
+index 2082b1a88fb9..c3eee4c6d6c1 100644
+--- a/kernel/sysctl.c
++++ b/kernel/sysctl.c
+@@ -1531,12 +1531,6 @@ static struct ctl_table vm_table[] = {
+ { }
+ };
+
+-#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
+-static struct ctl_table binfmt_misc_table[] = {
+- { }
+-};
+-#endif
+-
+ static struct ctl_table fs_table[] = {
+ {
+ .procname = "inode-nr",
+@@ -1690,7 +1684,7 @@ static struct ctl_table fs_table[] = {
+ {
+ .procname = "binfmt_misc",
+ .mode = 0555,
+- .child = binfmt_misc_table,
++ .child = sysctl_mount_point,
+ },
+ #endif
+ {
+diff --git a/mm/kmemleak.c b/mm/kmemleak.c
+index f0fe4f2c1fa7..3716cdb8ba42 100644
+--- a/mm/kmemleak.c
++++ b/mm/kmemleak.c
+@@ -195,6 +195,8 @@ static struct kmem_cache *scan_area_cache;
+
+ /* set if tracing memory operations is enabled */
+ static int kmemleak_enabled;
++/* same as above but only for the kmemleak_free() callback */
++static int kmemleak_free_enabled;
+ /* set in the late_initcall if there were no errors */
+ static int kmemleak_initialized;
+ /* enables or disables early logging of the memory operations */
+@@ -907,12 +909,13 @@ EXPORT_SYMBOL_GPL(kmemleak_alloc);
+ * kmemleak_alloc_percpu - register a newly allocated __percpu object
+ * @ptr: __percpu pointer to beginning of the object
+ * @size: size of the object
++ * @gfp: flags used for kmemleak internal memory allocations
+ *
+ * This function is called from the kernel percpu allocator when a new object
+- * (memory block) is allocated (alloc_percpu). It assumes GFP_KERNEL
+- * allocation.
++ * (memory block) is allocated (alloc_percpu).
+ */
+-void __ref kmemleak_alloc_percpu(const void __percpu *ptr, size_t size)
++void __ref kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
++ gfp_t gfp)
+ {
+ unsigned int cpu;
+
+@@ -925,7 +928,7 @@ void __ref kmemleak_alloc_percpu(const void __percpu *ptr, size_t size)
+ if (kmemleak_enabled && ptr && !IS_ERR(ptr))
+ for_each_possible_cpu(cpu)
+ create_object((unsigned long)per_cpu_ptr(ptr, cpu),
+- size, 0, GFP_KERNEL);
++ size, 0, gfp);
+ else if (kmemleak_early_log)
+ log_early(KMEMLEAK_ALLOC_PERCPU, ptr, size, 0);
+ }
+@@ -942,7 +945,7 @@ void __ref kmemleak_free(const void *ptr)
+ {
+ pr_debug("%s(0x%p)\n", __func__, ptr);
+
+- if (kmemleak_enabled && ptr && !IS_ERR(ptr))
++ if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
+ delete_object_full((unsigned long)ptr);
+ else if (kmemleak_early_log)
+ log_early(KMEMLEAK_FREE, ptr, 0, 0);
+@@ -982,7 +985,7 @@ void __ref kmemleak_free_percpu(const void __percpu *ptr)
+
+ pr_debug("%s(0x%p)\n", __func__, ptr);
+
+- if (kmemleak_enabled && ptr && !IS_ERR(ptr))
++ if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
+ for_each_possible_cpu(cpu)
+ delete_object_full((unsigned long)per_cpu_ptr(ptr,
+ cpu));
+@@ -1750,6 +1753,13 @@ static void kmemleak_do_cleanup(struct work_struct *work)
+ mutex_lock(&scan_mutex);
+ stop_scan_thread();
+
++ /*
++ * Once the scan thread has stopped, it is safe to no longer track
++ * object freeing. Ordering of the scan thread stopping and the memory
++ * accesses below is guaranteed by the kthread_stop() function.
++ */
++ kmemleak_free_enabled = 0;
++
+ if (!kmemleak_found_leaks)
+ __kmemleak_do_cleanup();
+ else
+@@ -1776,6 +1786,8 @@ static void kmemleak_disable(void)
+ /* check whether it is too early for a kernel thread */
+ if (kmemleak_initialized)
+ schedule_work(&cleanup_work);
++ else
++ kmemleak_free_enabled = 0;
+
+ pr_info("Kernel memory leak detector disabled\n");
+ }
+@@ -1840,8 +1852,10 @@ void __init kmemleak_init(void)
+ if (kmemleak_error) {
+ local_irq_restore(flags);
+ return;
+- } else
++ } else {
+ kmemleak_enabled = 1;
++ kmemleak_free_enabled = 1;
++ }
+ local_irq_restore(flags);
+
+ /*
+diff --git a/mm/mempolicy.c b/mm/mempolicy.c
+index 747743237d9f..99d4c1d0b858 100644
+--- a/mm/mempolicy.c
++++ b/mm/mempolicy.c
+@@ -1972,35 +1972,41 @@ retry_cpuset:
+ pol = get_vma_policy(vma, addr);
+ cpuset_mems_cookie = read_mems_allowed_begin();
+
+- if (unlikely(IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && hugepage &&
+- pol->mode != MPOL_INTERLEAVE)) {
++ if (pol->mode == MPOL_INTERLEAVE) {
++ unsigned nid;
++
++ nid = interleave_nid(pol, vma, addr, PAGE_SHIFT + order);
++ mpol_cond_put(pol);
++ page = alloc_page_interleave(gfp, order, nid);
++ goto out;
++ }
++
++ if (unlikely(IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && hugepage)) {
++ int hpage_node = node;
++
+ /*
+ * For hugepage allocation and non-interleave policy which
+- * allows the current node, we only try to allocate from the
+- * current node and don't fall back to other nodes, as the
+- * cost of remote accesses would likely offset THP benefits.
++ * allows the current node (or other explicitly preferred
++ * node) we only try to allocate from the current/preferred
++ * node and don't fall back to other nodes, as the cost of
++ * remote accesses would likely offset THP benefits.
+ *
+ * If the policy is interleave, or does not allow the current
+ * node in its nodemask, we allocate the standard way.
+ */
++ if (pol->mode == MPOL_PREFERRED &&
++ !(pol->flags & MPOL_F_LOCAL))
++ hpage_node = pol->v.preferred_node;
++
+ nmask = policy_nodemask(gfp, pol);
+- if (!nmask || node_isset(node, *nmask)) {
++ if (!nmask || node_isset(hpage_node, *nmask)) {
+ mpol_cond_put(pol);
+- page = alloc_pages_exact_node(node,
++ page = alloc_pages_exact_node(hpage_node,
+ gfp | __GFP_THISNODE, order);
+ goto out;
+ }
+ }
+
+- if (pol->mode == MPOL_INTERLEAVE) {
+- unsigned nid;
+-
+- nid = interleave_nid(pol, vma, addr, PAGE_SHIFT + order);
+- mpol_cond_put(pol);
+- page = alloc_page_interleave(gfp, order, nid);
+- goto out;
+- }
+-
+ nmask = policy_nodemask(gfp, pol);
+ zl = policy_zonelist(gfp, pol, node);
+ mpol_cond_put(pol);
+diff --git a/mm/percpu.c b/mm/percpu.c
+index dfd02484e8de..2dd74487a0af 100644
+--- a/mm/percpu.c
++++ b/mm/percpu.c
+@@ -1030,7 +1030,7 @@ area_found:
+ memset((void *)pcpu_chunk_addr(chunk, cpu, 0) + off, 0, size);
+
+ ptr = __addr_to_pcpu_ptr(chunk->base_addr + off);
+- kmemleak_alloc_percpu(ptr, size);
++ kmemleak_alloc_percpu(ptr, size, gfp);
+ return ptr;
+
+ fail_unlock:
+diff --git a/security/inode.c b/security/inode.c
+index 91503b79c5f8..0e37e4fba8fa 100644
+--- a/security/inode.c
++++ b/security/inode.c
+@@ -215,19 +215,17 @@ void securityfs_remove(struct dentry *dentry)
+ }
+ EXPORT_SYMBOL_GPL(securityfs_remove);
+
+-static struct kobject *security_kobj;
+-
+ static int __init securityfs_init(void)
+ {
+ int retval;
+
+- security_kobj = kobject_create_and_add("security", kernel_kobj);
+- if (!security_kobj)
+- return -EINVAL;
++ retval = sysfs_create_mount_point(kernel_kobj, "security");
++ if (retval)
++ return retval;
+
+ retval = register_filesystem(&fs_type);
+ if (retval)
+- kobject_put(security_kobj);
++ sysfs_remove_mount_point(kernel_kobj, "security");
+ return retval;
+ }
+
+diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
+index d2787cca1fcb..3d2201413028 100644
+--- a/security/selinux/selinuxfs.c
++++ b/security/selinux/selinuxfs.c
+@@ -1853,7 +1853,6 @@ static struct file_system_type sel_fs_type = {
+ };
+
+ struct vfsmount *selinuxfs_mount;
+-static struct kobject *selinuxfs_kobj;
+
+ static int __init init_sel_fs(void)
+ {
+@@ -1862,13 +1861,13 @@ static int __init init_sel_fs(void)
+ if (!selinux_enabled)
+ return 0;
+
+- selinuxfs_kobj = kobject_create_and_add("selinux", fs_kobj);
+- if (!selinuxfs_kobj)
+- return -ENOMEM;
++ err = sysfs_create_mount_point(fs_kobj, "selinux");
++ if (err)
++ return err;
+
+ err = register_filesystem(&sel_fs_type);
+ if (err) {
+- kobject_put(selinuxfs_kobj);
++ sysfs_remove_mount_point(fs_kobj, "selinux");
+ return err;
+ }
+
+@@ -1887,7 +1886,7 @@ __initcall(init_sel_fs);
+ #ifdef CONFIG_SECURITY_SELINUX_DISABLE
+ void exit_sel_fs(void)
+ {
+- kobject_put(selinuxfs_kobj);
++ sysfs_remove_mount_point(fs_kobj, "selinux");
+ kern_unmount(selinuxfs_mount);
+ unregister_filesystem(&sel_fs_type);
+ }
+diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
+index d9682985349e..ac4cac7c661a 100644
+--- a/security/smack/smackfs.c
++++ b/security/smack/smackfs.c
+@@ -2241,16 +2241,16 @@ static const struct file_operations smk_revoke_subj_ops = {
+ .llseek = generic_file_llseek,
+ };
+
+-static struct kset *smackfs_kset;
+ /**
+ * smk_init_sysfs - initialize /sys/fs/smackfs
+ *
+ */
+ static int smk_init_sysfs(void)
+ {
+- smackfs_kset = kset_create_and_add("smackfs", NULL, fs_kobj);
+- if (!smackfs_kset)
+- return -ENOMEM;
++ int err;
++ err = sysfs_create_mount_point(fs_kobj, "smackfs");
++ if (err)
++ return err;
+ return 0;
+ }
+
+diff --git a/sound/core/pcm.c b/sound/core/pcm.c
+index b25bcf5b8644..dfed728d8c87 100644
+--- a/sound/core/pcm.c
++++ b/sound/core/pcm.c
+@@ -1027,7 +1027,8 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
+ static ssize_t show_pcm_class(struct device *dev,
+ struct device_attribute *attr, char *buf)
+ {
+- struct snd_pcm *pcm;
++ struct snd_pcm_str *pstr = container_of(dev, struct snd_pcm_str, dev);
++ struct snd_pcm *pcm = pstr->pcm;
+ const char *str;
+ static const char *strs[SNDRV_PCM_CLASS_LAST + 1] = {
+ [SNDRV_PCM_CLASS_GENERIC] = "generic",
+@@ -1036,8 +1037,7 @@ static ssize_t show_pcm_class(struct device *dev,
+ [SNDRV_PCM_CLASS_DIGITIZER] = "digitizer",
+ };
+
+- if (! (pcm = dev_get_drvdata(dev)) ||
+- pcm->dev_class > SNDRV_PCM_CLASS_LAST)
++ if (pcm->dev_class > SNDRV_PCM_CLASS_LAST)
+ str = "none";
+ else
+ str = strs[pcm->dev_class];
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index b6db25b23dd3..c403dd10d126 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -2054,6 +2054,8 @@ static const struct pci_device_id azx_ids[] = {
+ { PCI_DEVICE(0x1022, 0x780d),
+ .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
+ /* ATI HDMI */
++ { PCI_DEVICE(0x1002, 0x1308),
++ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0x793b),
+ .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
+ { PCI_DEVICE(0x1002, 0x7919),
+@@ -2062,6 +2064,8 @@ static const struct pci_device_id azx_ids[] = {
+ .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
+ { PCI_DEVICE(0x1002, 0x970f),
+ .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
++ { PCI_DEVICE(0x1002, 0x9840),
++ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0xaa00),
+ .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
+ { PCI_DEVICE(0x1002, 0xaa08),
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 6d010452c1f5..0e75998db39f 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -4458,6 +4458,7 @@ enum {
+ ALC269_FIXUP_LIFEBOOK,
+ ALC269_FIXUP_LIFEBOOK_EXTMIC,
+ ALC269_FIXUP_LIFEBOOK_HP_PIN,
++ ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT,
+ ALC269_FIXUP_AMIC,
+ ALC269_FIXUP_DMIC,
+ ALC269VB_FIXUP_AMIC,
+@@ -4478,6 +4479,7 @@ enum {
+ ALC269_FIXUP_DELL3_MIC_NO_PRESENCE,
+ ALC269_FIXUP_HEADSET_MODE,
+ ALC269_FIXUP_HEADSET_MODE_NO_HP_MIC,
++ ALC269_FIXUP_ASPIRE_HEADSET_MIC,
+ ALC269_FIXUP_ASUS_X101_FUNC,
+ ALC269_FIXUP_ASUS_X101_VERB,
+ ALC269_FIXUP_ASUS_X101,
+@@ -4505,6 +4507,7 @@ enum {
+ ALC255_FIXUP_HEADSET_MODE_NO_HP_MIC,
+ ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC292_FIXUP_TPT440_DOCK,
++ ALC292_FIXUP_TPT440_DOCK2,
+ ALC283_FIXUP_BXBT2807_MIC,
+ ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED,
+ ALC282_FIXUP_ASPIRE_V5_PINS,
+@@ -4515,6 +4518,8 @@ enum {
+ ALC288_FIXUP_DELL_HEADSET_MODE,
+ ALC288_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC288_FIXUP_DELL_XPS_13_GPIO6,
++ ALC288_FIXUP_DELL_XPS_13,
++ ALC288_FIXUP_DISABLE_AAMIX,
+ ALC292_FIXUP_DELL_E7X,
+ ALC292_FIXUP_DISABLE_AAMIX,
+ };
+@@ -4623,6 +4628,10 @@ static const struct hda_fixup alc269_fixups[] = {
+ { }
+ },
+ },
++ [ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc269_fixup_pincfg_no_hp_to_lineout,
++ },
+ [ALC269_FIXUP_AMIC] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+@@ -4751,6 +4760,15 @@ static const struct hda_fixup alc269_fixups[] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_headset_mode_no_hp_mic,
+ },
++ [ALC269_FIXUP_ASPIRE_HEADSET_MIC] = {
++ .type = HDA_FIXUP_PINS,
++ .v.pins = (const struct hda_pintbl[]) {
++ { 0x19, 0x01a1913c }, /* headset mic w/o jack detect */
++ { }
++ },
++ .chained = true,
++ .chain_id = ALC269_FIXUP_HEADSET_MODE,
++ },
+ [ALC286_FIXUP_SONY_MIC_NO_PRESENCE] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+@@ -4953,6 +4971,12 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chain_id = ALC269_FIXUP_HEADSET_MODE
+ },
+ [ALC292_FIXUP_TPT440_DOCK] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc269_fixup_pincfg_no_hp_to_lineout,
++ .chained = true,
++ .chain_id = ALC292_FIXUP_TPT440_DOCK2
++ },
++ [ALC292_FIXUP_TPT440_DOCK2] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+ { 0x16, 0x21211010 }, /* dock headphone */
+@@ -5039,9 +5063,23 @@ static const struct hda_fixup alc269_fixups[] = {
+ .chained = true,
+ .chain_id = ALC288_FIXUP_DELL1_MIC_NO_PRESENCE
+ },
++ [ALC288_FIXUP_DISABLE_AAMIX] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_disable_aamix,
++ .chained = true,
++ .chain_id = ALC288_FIXUP_DELL_XPS_13_GPIO6
++ },
++ [ALC288_FIXUP_DELL_XPS_13] = {
++ .type = HDA_FIXUP_FUNC,
++ .v.func = alc_fixup_dell_xps13,
++ .chained = true,
++ .chain_id = ALC288_FIXUP_DISABLE_AAMIX
++ },
+ [ALC292_FIXUP_DISABLE_AAMIX] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_disable_aamix,
++ .chained = true,
++ .chain_id = ALC269_FIXUP_DELL2_MIC_NO_PRESENCE
+ },
+ [ALC292_FIXUP_DELL_E7X] = {
+ .type = HDA_FIXUP_FUNC,
+@@ -5056,6 +5094,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1025, 0x029b, "Acer 1810TZ", ALC269_FIXUP_INV_DMIC),
+ SND_PCI_QUIRK(0x1025, 0x0349, "Acer AOD260", ALC269_FIXUP_INV_DMIC),
+ SND_PCI_QUIRK(0x1025, 0x047c, "Acer AC700", ALC269_FIXUP_ACER_AC700),
++ SND_PCI_QUIRK(0x1025, 0x072d, "Acer Aspire V5-571G", ALC269_FIXUP_ASPIRE_HEADSET_MIC),
++ SND_PCI_QUIRK(0x1025, 0x080d, "Acer Aspire V5-122P", ALC269_FIXUP_ASPIRE_HEADSET_MIC),
+ SND_PCI_QUIRK(0x1025, 0x0740, "Acer AO725", ALC271_FIXUP_HP_GATE_MIC_JACK),
+ SND_PCI_QUIRK(0x1025, 0x0742, "Acer AO756", ALC271_FIXUP_HP_GATE_MIC_JACK),
+ SND_PCI_QUIRK(0x1025, 0x0775, "Acer Aspire E1-572", ALC271_FIXUP_HP_GATE_MIC_JACK_E1_572),
+@@ -5069,10 +5109,11 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x1028, 0x05f6, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x0615, "Dell Vostro 5470", ALC290_FIXUP_SUBWOOFER_HSJACK),
+ SND_PCI_QUIRK(0x1028, 0x0616, "Dell Vostro 5470", ALC290_FIXUP_SUBWOOFER_HSJACK),
++ SND_PCI_QUIRK(0x1028, 0x062e, "Dell Latitude E7450", ALC292_FIXUP_DELL_E7X),
+ SND_PCI_QUIRK(0x1028, 0x0638, "Dell Inspiron 5439", ALC290_FIXUP_MONO_SPEAKERS_HSJACK),
+ SND_PCI_QUIRK(0x1028, 0x064a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x064b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+- SND_PCI_QUIRK(0x1028, 0x0665, "Dell XPS 13", ALC292_FIXUP_DELL_E7X),
++ SND_PCI_QUIRK(0x1028, 0x0665, "Dell XPS 13", ALC288_FIXUP_DELL_XPS_13),
+ SND_PCI_QUIRK(0x1028, 0x06c7, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+@@ -5156,6 +5197,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
+ SND_PCI_QUIRK(0x104d, 0x9084, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ),
+ SND_PCI_QUIRK(0x104d, 0x9099, "Sony VAIO S13", ALC275_FIXUP_SONY_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x10cf, 0x1475, "Lifebook", ALC269_FIXUP_LIFEBOOK),
++ SND_PCI_QUIRK(0x10cf, 0x159f, "Lifebook E780", ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT),
+ SND_PCI_QUIRK(0x10cf, 0x15dc, "Lifebook T731", ALC269_FIXUP_LIFEBOOK_HP_PIN),
+ SND_PCI_QUIRK(0x10cf, 0x1757, "Lifebook E752", ALC269_FIXUP_LIFEBOOK_HP_PIN),
+ SND_PCI_QUIRK(0x10cf, 0x1845, "Lifebook U904", ALC269_FIXUP_LIFEBOOK_EXTMIC),
+diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
+index bab6c04932aa..0baeecc2213c 100644
+--- a/sound/pci/hda/patch_via.c
++++ b/sound/pci/hda/patch_via.c
+@@ -238,7 +238,9 @@ static int via_pin_power_ctl_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+ {
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+- ucontrol->value.enumerated.item[0] = codec->power_save_node;
++ struct via_spec *spec = codec->spec;
++
++ ucontrol->value.enumerated.item[0] = spec->gen.power_down_unused;
+ return 0;
+ }
+
+@@ -249,9 +251,9 @@ static int via_pin_power_ctl_put(struct snd_kcontrol *kcontrol,
+ struct via_spec *spec = codec->spec;
+ bool val = !!ucontrol->value.enumerated.item[0];
+
+- if (val == codec->power_save_node)
++ if (val == spec->gen.power_down_unused)
+ return 0;
+- codec->power_save_node = val;
++ /* codec->power_save_node = val; */ /* widget PM seems yet broken */
+ spec->gen.power_down_unused = val;
+ analog_low_current_mode(codec);
+ return 1;
+diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
+index 95abddcd7839..f76830643086 100644
+--- a/tools/testing/selftests/Makefile
++++ b/tools/testing/selftests/Makefile
+@@ -27,7 +27,7 @@ TARGETS_HOTPLUG += memory-hotplug
+ # Makefile to avoid test build failures when test
+ # Makefile doesn't have explicit build rules.
+ ifeq (1,$(MAKELEVEL))
+-undefine LDFLAGS
++override LDFLAGS =
+ override MAKEFLAGS =
+ endif
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-07-19 18:55 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-07-19 18:55 UTC (permalink / raw
To: gentoo-commits
commit: 01b9c43422fe77d31b59e745af7521cb1daecd99
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sun Jul 19 18:55:33 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sun Jul 19 18:55:33 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=01b9c434
BFQ patchset for kernel 4.1
0000_README | 12 +
...roups-kconfig-build-bits-for-BFQ-v7r8-4.1.patch | 104 +
...introduce-the-BFQ-v7r8-I-O-sched-for-4.1.patch1 | 6952 ++++++++++++++++++++
...rly-Queue-Merge-EQM-to-BFQ-v7r8-for-4.1.0.patch | 1220 ++++
4 files changed, 8288 insertions(+)
diff --git a/0000_README b/0000_README
index 43154ce..3b87439 100644
--- a/0000_README
+++ b/0000_README
@@ -87,6 +87,18 @@ Patch: 5000_enable-additional-cpu-optimizations-for-gcc.patch
From: https://github.com/graysky2/kernel_gcc_patch/
Desc: Kernel patch enables gcc < v4.9 optimizations for additional CPUs.
+Patch: 5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r8-4.1.patch
+From: http://algo.ing.unimo.it/people/paolo/disk_sched/
+Desc: BFQ v7r8 patch 1 for 4.1: Build, cgroups and kconfig bits
+
+Patch: 5002_block-introduce-the-BFQ-v7r8-I-O-sched-for-4.1.patch1
+From: http://algo.ing.unimo.it/people/paolo/disk_sched/
+Desc: BFQ v7r8 patch 2 for 4.1: BFQ Scheduler
+
+Patch: 5003_block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-v7r8-for-4.1.0.patch
+From: http://algo.ing.unimo.it/people/paolo/disk_sched/
+Desc: BFQ v7r8 patch 3 for 4.1: Early Queue Merge (EQM)
+
Patch: 5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
From: https://github.com/graysky2/kernel_gcc_patch/
Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs.
diff --git a/5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r8-4.1.patch b/5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r8-4.1.patch
new file mode 100644
index 0000000..97e1a74
--- /dev/null
+++ b/5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r8-4.1.patch
@@ -0,0 +1,104 @@
+From ba1f3efda7e8670fc74715ba9eed93bc1172672d Mon Sep 17 00:00:00 2001
+From: Paolo Valente <paolo.valente@unimore.it>
+Date: Tue, 7 Apr 2015 13:39:12 +0200
+Subject: [PATCH 1/3] block: cgroups, kconfig, build bits for BFQ-v7r8-4.1
+
+Update Kconfig.iosched and do the related Makefile changes to include
+kernel configuration options for BFQ. Also add the bfqio controller
+to the cgroups subsystem.
+
+Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
+Signed-off-by: Arianna Avanzini <avanzini.arianna@gmail.com>
+---
+ block/Kconfig.iosched | 32 ++++++++++++++++++++++++++++++++
+ block/Makefile | 1 +
+ include/linux/cgroup_subsys.h | 4 ++++
+ 3 files changed, 37 insertions(+)
+
+diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched
+index 421bef9..0ee5f0f 100644
+--- a/block/Kconfig.iosched
++++ b/block/Kconfig.iosched
+@@ -39,6 +39,27 @@ config CFQ_GROUP_IOSCHED
+ ---help---
+ Enable group IO scheduling in CFQ.
+
++config IOSCHED_BFQ
++ tristate "BFQ I/O scheduler"
++ default n
++ ---help---
++ The BFQ I/O scheduler tries to distribute bandwidth among
++ all processes according to their weights.
++ It aims at distributing the bandwidth as desired, independently of
++ the disk parameters and with any workload. It also tries to
++ guarantee low latency to interactive and soft real-time
++ applications. If compiled built-in (saying Y here), BFQ can
++ be configured to support hierarchical scheduling.
++
++config CGROUP_BFQIO
++ bool "BFQ hierarchical scheduling support"
++ depends on CGROUPS && IOSCHED_BFQ=y
++ default n
++ ---help---
++ Enable hierarchical scheduling in BFQ, using the cgroups
++ filesystem interface. The name of the subsystem will be
++ bfqio.
++
+ choice
+ prompt "Default I/O scheduler"
+ default DEFAULT_CFQ
+@@ -52,6 +73,16 @@ choice
+ config DEFAULT_CFQ
+ bool "CFQ" if IOSCHED_CFQ=y
+
++ config DEFAULT_BFQ
++ bool "BFQ" if IOSCHED_BFQ=y
++ help
++ Selects BFQ as the default I/O scheduler which will be
++ used by default for all block devices.
++ The BFQ I/O scheduler aims at distributing the bandwidth
++ as desired, independently of the disk parameters and with
++ any workload. It also tries to guarantee low latency to
++ interactive and soft real-time applications.
++
+ config DEFAULT_NOOP
+ bool "No-op"
+
+@@ -61,6 +92,7 @@ config DEFAULT_IOSCHED
+ string
+ default "deadline" if DEFAULT_DEADLINE
+ default "cfq" if DEFAULT_CFQ
++ default "bfq" if DEFAULT_BFQ
+ default "noop" if DEFAULT_NOOP
+
+ endmenu
+diff --git a/block/Makefile b/block/Makefile
+index 00ecc97..1ed86d5 100644
+--- a/block/Makefile
++++ b/block/Makefile
+@@ -18,6 +18,7 @@ obj-$(CONFIG_BLK_DEV_THROTTLING) += blk-throttle.o
+ obj-$(CONFIG_IOSCHED_NOOP) += noop-iosched.o
+ obj-$(CONFIG_IOSCHED_DEADLINE) += deadline-iosched.o
+ obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o
++obj-$(CONFIG_IOSCHED_BFQ) += bfq-iosched.o
+
+ obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o
+ obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o
+diff --git a/include/linux/cgroup_subsys.h b/include/linux/cgroup_subsys.h
+index e4a96fb..267d681 100644
+--- a/include/linux/cgroup_subsys.h
++++ b/include/linux/cgroup_subsys.h
+@@ -35,6 +35,10 @@ SUBSYS(freezer)
+ SUBSYS(net_cls)
+ #endif
+
++#if IS_ENABLED(CONFIG_CGROUP_BFQIO)
++SUBSYS(bfqio)
++#endif
++
+ #if IS_ENABLED(CONFIG_CGROUP_PERF)
+ SUBSYS(perf_event)
+ #endif
+--
+2.1.4
+
diff --git a/5002_block-introduce-the-BFQ-v7r8-I-O-sched-for-4.1.patch1 b/5002_block-introduce-the-BFQ-v7r8-I-O-sched-for-4.1.patch1
new file mode 100644
index 0000000..00878b7
--- /dev/null
+++ b/5002_block-introduce-the-BFQ-v7r8-I-O-sched-for-4.1.patch1
@@ -0,0 +1,6952 @@
+From af6f05b4c3bcc92a3c28be57411b9fcc290fa301 Mon Sep 17 00:00:00 2001
+From: Paolo Valente <paolo.valente@unimore.it>
+Date: Thu, 9 May 2013 19:10:02 +0200
+Subject: [PATCH 2/3] block: introduce the BFQ-v7r8 I/O sched for 4.1
+
+Add the BFQ-v7r8 I/O scheduler to 4.1.
+The general structure is borrowed from CFQ, as much of the code for
+handling I/O contexts. Over time, several useful features have been
+ported from CFQ as well (details in the changelog in README.BFQ). A
+(bfq_)queue is associated to each task doing I/O on a device, and each
+time a scheduling decision has to be made a queue is selected and served
+until it expires.
+
+ - Slices are given in the service domain: tasks are assigned
+ budgets, measured in number of sectors. Once got the disk, a task
+ must however consume its assigned budget within a configurable
+ maximum time (by default, the maximum possible value of the
+ budgets is automatically computed to comply with this timeout).
+ This allows the desired latency vs "throughput boosting" tradeoff
+ to be set.
+
+ - Budgets are scheduled according to a variant of WF2Q+, implemented
+ using an augmented rb-tree to take eligibility into account while
+ preserving an O(log N) overall complexity.
+
+ - A low-latency tunable is provided; if enabled, both interactive
+ and soft real-time applications are guaranteed a very low latency.
+
+ - Latency guarantees are preserved also in the presence of NCQ.
+
+ - Also with flash-based devices, a high throughput is achieved
+ while still preserving latency guarantees.
+
+ - BFQ features Early Queue Merge (EQM), a sort of fusion of the
+ cooperating-queue-merging and the preemption mechanisms present
+ in CFQ. EQM is in fact a unified mechanism that tries to get a
+ sequential read pattern, and hence a high throughput, with any
+ set of processes performing interleaved I/O over a contiguous
+ sequence of sectors.
+
+ - BFQ supports full hierarchical scheduling, exporting a cgroups
+ interface. Since each node has a full scheduler, each group can
+ be assigned its own weight.
+
+ - If the cgroups interface is not used, only I/O priorities can be
+ assigned to processes, with ioprio values mapped to weights
+ with the relation weight = IOPRIO_BE_NR - ioprio.
+
+ - ioprio classes are served in strict priority order, i.e., lower
+ priority queues are not served as long as there are higher
+ priority queues. Among queues in the same class the bandwidth is
+ distributed in proportion to the weight of each queue. A very
+ thin extra bandwidth is however guaranteed to the Idle class, to
+ prevent it from starving.
+
+Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
+Signed-off-by: Arianna Avanzini <avanzini.arianna@gmail.com>
+---
+ block/bfq-cgroup.c | 936 +++++++++++++
+ block/bfq-ioc.c | 36 +
+ block/bfq-iosched.c | 3898 +++++++++++++++++++++++++++++++++++++++++++++++++++
+ block/bfq-sched.c | 1208 ++++++++++++++++
+ block/bfq.h | 771 ++++++++++
+ 5 files changed, 6849 insertions(+)
+ create mode 100644 block/bfq-cgroup.c
+ create mode 100644 block/bfq-ioc.c
+ create mode 100644 block/bfq-iosched.c
+ create mode 100644 block/bfq-sched.c
+ create mode 100644 block/bfq.h
+
+diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c
+new file mode 100644
+index 0000000..11e2f1d
+--- /dev/null
++++ b/block/bfq-cgroup.c
+@@ -0,0 +1,936 @@
++/*
++ * BFQ: CGROUPS support.
++ *
++ * Based on ideas and code from CFQ:
++ * Copyright (C) 2003 Jens Axboe <axboe@kernel.dk>
++ *
++ * Copyright (C) 2008 Fabio Checconi <fabio@gandalf.sssup.it>
++ * Paolo Valente <paolo.valente@unimore.it>
++ *
++ * Copyright (C) 2010 Paolo Valente <paolo.valente@unimore.it>
++ *
++ * Licensed under the GPL-2 as detailed in the accompanying COPYING.BFQ
++ * file.
++ */
++
++#ifdef CONFIG_CGROUP_BFQIO
++
++static DEFINE_MUTEX(bfqio_mutex);
++
++static bool bfqio_is_removed(struct bfqio_cgroup *bgrp)
++{
++ return bgrp ? !bgrp->online : false;
++}
++
++static struct bfqio_cgroup bfqio_root_cgroup = {
++ .weight = BFQ_DEFAULT_GRP_WEIGHT,
++ .ioprio = BFQ_DEFAULT_GRP_IOPRIO,
++ .ioprio_class = BFQ_DEFAULT_GRP_CLASS,
++};
++
++static inline void bfq_init_entity(struct bfq_entity *entity,
++ struct bfq_group *bfqg)
++{
++ entity->weight = entity->new_weight;
++ entity->orig_weight = entity->new_weight;
++ entity->ioprio = entity->new_ioprio;
++ entity->ioprio_class = entity->new_ioprio_class;
++ entity->parent = bfqg->my_entity;
++ entity->sched_data = &bfqg->sched_data;
++}
++
++static struct bfqio_cgroup *css_to_bfqio(struct cgroup_subsys_state *css)
++{
++ return css ? container_of(css, struct bfqio_cgroup, css) : NULL;
++}
++
++/*
++ * Search the bfq_group for bfqd into the hash table (by now only a list)
++ * of bgrp. Must be called under rcu_read_lock().
++ */
++static struct bfq_group *bfqio_lookup_group(struct bfqio_cgroup *bgrp,
++ struct bfq_data *bfqd)
++{
++ struct bfq_group *bfqg;
++ void *key;
++
++ hlist_for_each_entry_rcu(bfqg, &bgrp->group_data, group_node) {
++ key = rcu_dereference(bfqg->bfqd);
++ if (key == bfqd)
++ return bfqg;
++ }
++
++ return NULL;
++}
++
++static inline void bfq_group_init_entity(struct bfqio_cgroup *bgrp,
++ struct bfq_group *bfqg)
++{
++ struct bfq_entity *entity = &bfqg->entity;
++
++ /*
++ * If the weight of the entity has never been set via the sysfs
++ * interface, then bgrp->weight == 0. In this case we initialize
++ * the weight from the current ioprio value. Otherwise, the group
++ * weight, if set, has priority over the ioprio value.
++ */
++ if (bgrp->weight == 0) {
++ entity->new_weight = bfq_ioprio_to_weight(bgrp->ioprio);
++ entity->new_ioprio = bgrp->ioprio;
++ } else {
++ if (bgrp->weight < BFQ_MIN_WEIGHT ||
++ bgrp->weight > BFQ_MAX_WEIGHT) {
++ printk(KERN_CRIT "bfq_group_init_entity: "
++ "bgrp->weight %d\n", bgrp->weight);
++ BUG();
++ }
++ entity->new_weight = bgrp->weight;
++ entity->new_ioprio = bfq_weight_to_ioprio(bgrp->weight);
++ }
++ entity->orig_weight = entity->weight = entity->new_weight;
++ entity->ioprio = entity->new_ioprio;
++ entity->ioprio_class = entity->new_ioprio_class = bgrp->ioprio_class;
++ entity->my_sched_data = &bfqg->sched_data;
++ bfqg->active_entities = 0;
++}
++
++static inline void bfq_group_set_parent(struct bfq_group *bfqg,
++ struct bfq_group *parent)
++{
++ struct bfq_entity *entity;
++
++ BUG_ON(parent == NULL);
++ BUG_ON(bfqg == NULL);
++
++ entity = &bfqg->entity;
++ entity->parent = parent->my_entity;
++ entity->sched_data = &parent->sched_data;
++}
++
++/**
++ * bfq_group_chain_alloc - allocate a chain of groups.
++ * @bfqd: queue descriptor.
++ * @css: the leaf cgroup_subsys_state this chain starts from.
++ *
++ * Allocate a chain of groups starting from the one belonging to
++ * @cgroup up to the root cgroup. Stop if a cgroup on the chain
++ * to the root has already an allocated group on @bfqd.
++ */
++static struct bfq_group *bfq_group_chain_alloc(struct bfq_data *bfqd,
++ struct cgroup_subsys_state *css)
++{
++ struct bfqio_cgroup *bgrp;
++ struct bfq_group *bfqg, *prev = NULL, *leaf = NULL;
++
++ for (; css != NULL; css = css->parent) {
++ bgrp = css_to_bfqio(css);
++
++ bfqg = bfqio_lookup_group(bgrp, bfqd);
++ if (bfqg != NULL) {
++ /*
++ * All the cgroups in the path from there to the
++ * root must have a bfq_group for bfqd, so we don't
++ * need any more allocations.
++ */
++ break;
++ }
++
++ bfqg = kzalloc(sizeof(*bfqg), GFP_ATOMIC);
++ if (bfqg == NULL)
++ goto cleanup;
++
++ bfq_group_init_entity(bgrp, bfqg);
++ bfqg->my_entity = &bfqg->entity;
++
++ if (leaf == NULL) {
++ leaf = bfqg;
++ prev = leaf;
++ } else {
++ bfq_group_set_parent(prev, bfqg);
++ /*
++ * Build a list of allocated nodes using the bfqd
++ * filed, that is still unused and will be
++ * initialized only after the node will be
++ * connected.
++ */
++ prev->bfqd = bfqg;
++ prev = bfqg;
++ }
++ }
++
++ return leaf;
++
++cleanup:
++ while (leaf != NULL) {
++ prev = leaf;
++ leaf = leaf->bfqd;
++ kfree(prev);
++ }
++
++ return NULL;
++}
++
++/**
++ * bfq_group_chain_link - link an allocated group chain to a cgroup
++ * hierarchy.
++ * @bfqd: the queue descriptor.
++ * @css: the leaf cgroup_subsys_state to start from.
++ * @leaf: the leaf group (to be associated to @cgroup).
++ *
++ * Try to link a chain of groups to a cgroup hierarchy, connecting the
++ * nodes bottom-up, so we can be sure that when we find a cgroup in the
++ * hierarchy that already as a group associated to @bfqd all the nodes
++ * in the path to the root cgroup have one too.
++ *
++ * On locking: the queue lock protects the hierarchy (there is a hierarchy
++ * per device) while the bfqio_cgroup lock protects the list of groups
++ * belonging to the same cgroup.
++ */
++static void bfq_group_chain_link(struct bfq_data *bfqd,
++ struct cgroup_subsys_state *css,
++ struct bfq_group *leaf)
++{
++ struct bfqio_cgroup *bgrp;
++ struct bfq_group *bfqg, *next, *prev = NULL;
++ unsigned long flags;
++
++ assert_spin_locked(bfqd->queue->queue_lock);
++
++ for (; css != NULL && leaf != NULL; css = css->parent) {
++ bgrp = css_to_bfqio(css);
++ next = leaf->bfqd;
++
++ bfqg = bfqio_lookup_group(bgrp, bfqd);
++ BUG_ON(bfqg != NULL);
++
++ spin_lock_irqsave(&bgrp->lock, flags);
++
++ rcu_assign_pointer(leaf->bfqd, bfqd);
++ hlist_add_head_rcu(&leaf->group_node, &bgrp->group_data);
++ hlist_add_head(&leaf->bfqd_node, &bfqd->group_list);
++
++ spin_unlock_irqrestore(&bgrp->lock, flags);
++
++ prev = leaf;
++ leaf = next;
++ }
++
++ BUG_ON(css == NULL && leaf != NULL);
++ if (css != NULL && prev != NULL) {
++ bgrp = css_to_bfqio(css);
++ bfqg = bfqio_lookup_group(bgrp, bfqd);
++ bfq_group_set_parent(prev, bfqg);
++ }
++}
++
++/**
++ * bfq_find_alloc_group - return the group associated to @bfqd in @cgroup.
++ * @bfqd: queue descriptor.
++ * @cgroup: cgroup being searched for.
++ *
++ * Return a group associated to @bfqd in @cgroup, allocating one if
++ * necessary. When a group is returned all the cgroups in the path
++ * to the root have a group associated to @bfqd.
++ *
++ * If the allocation fails, return the root group: this breaks guarantees
++ * but is a safe fallback. If this loss becomes a problem it can be
++ * mitigated using the equivalent weight (given by the product of the
++ * weights of the groups in the path from @group to the root) in the
++ * root scheduler.
++ *
++ * We allocate all the missing nodes in the path from the leaf cgroup
++ * to the root and we connect the nodes only after all the allocations
++ * have been successful.
++ */
++static struct bfq_group *bfq_find_alloc_group(struct bfq_data *bfqd,
++ struct cgroup_subsys_state *css)
++{
++ struct bfqio_cgroup *bgrp = css_to_bfqio(css);
++ struct bfq_group *bfqg;
++
++ bfqg = bfqio_lookup_group(bgrp, bfqd);
++ if (bfqg != NULL)
++ return bfqg;
++
++ bfqg = bfq_group_chain_alloc(bfqd, css);
++ if (bfqg != NULL)
++ bfq_group_chain_link(bfqd, css, bfqg);
++ else
++ bfqg = bfqd->root_group;
++
++ return bfqg;
++}
++
++/**
++ * bfq_bfqq_move - migrate @bfqq to @bfqg.
++ * @bfqd: queue descriptor.
++ * @bfqq: the queue to move.
++ * @entity: @bfqq's entity.
++ * @bfqg: the group to move to.
++ *
++ * Move @bfqq to @bfqg, deactivating it from its old group and reactivating
++ * it on the new one. Avoid putting the entity on the old group idle tree.
++ *
++ * Must be called under the queue lock; the cgroup owning @bfqg must
++ * not disappear (by now this just means that we are called under
++ * rcu_read_lock()).
++ */
++static void bfq_bfqq_move(struct bfq_data *bfqd, struct bfq_queue *bfqq,
++ struct bfq_entity *entity, struct bfq_group *bfqg)
++{
++ int busy, resume;
++
++ busy = bfq_bfqq_busy(bfqq);
++ resume = !RB_EMPTY_ROOT(&bfqq->sort_list);
++
++ BUG_ON(resume && !entity->on_st);
++ BUG_ON(busy && !resume && entity->on_st &&
++ bfqq != bfqd->in_service_queue);
++
++ if (busy) {
++ BUG_ON(atomic_read(&bfqq->ref) < 2);
++
++ if (!resume)
++ bfq_del_bfqq_busy(bfqd, bfqq, 0);
++ else
++ bfq_deactivate_bfqq(bfqd, bfqq, 0);
++ } else if (entity->on_st)
++ bfq_put_idle_entity(bfq_entity_service_tree(entity), entity);
++
++ /*
++ * Here we use a reference to bfqg. We don't need a refcounter
++ * as the cgroup reference will not be dropped, so that its
++ * destroy() callback will not be invoked.
++ */
++ entity->parent = bfqg->my_entity;
++ entity->sched_data = &bfqg->sched_data;
++
++ if (busy && resume)
++ bfq_activate_bfqq(bfqd, bfqq);
++
++ if (bfqd->in_service_queue == NULL && !bfqd->rq_in_driver)
++ bfq_schedule_dispatch(bfqd);
++}
++
++/**
++ * __bfq_bic_change_cgroup - move @bic to @cgroup.
++ * @bfqd: the queue descriptor.
++ * @bic: the bic to move.
++ * @cgroup: the cgroup to move to.
++ *
++ * Move bic to cgroup, assuming that bfqd->queue is locked; the caller
++ * has to make sure that the reference to cgroup is valid across the call.
++ *
++ * NOTE: an alternative approach might have been to store the current
++ * cgroup in bfqq and getting a reference to it, reducing the lookup
++ * time here, at the price of slightly more complex code.
++ */
++static struct bfq_group *__bfq_bic_change_cgroup(struct bfq_data *bfqd,
++ struct bfq_io_cq *bic,
++ struct cgroup_subsys_state *css)
++{
++ struct bfq_queue *async_bfqq = bic_to_bfqq(bic, 0);
++ struct bfq_queue *sync_bfqq = bic_to_bfqq(bic, 1);
++ struct bfq_entity *entity;
++ struct bfq_group *bfqg;
++ struct bfqio_cgroup *bgrp;
++
++ bgrp = css_to_bfqio(css);
++
++ bfqg = bfq_find_alloc_group(bfqd, css);
++ if (async_bfqq != NULL) {
++ entity = &async_bfqq->entity;
++
++ if (entity->sched_data != &bfqg->sched_data) {
++ bic_set_bfqq(bic, NULL, 0);
++ bfq_log_bfqq(bfqd, async_bfqq,
++ "bic_change_group: %p %d",
++ async_bfqq, atomic_read(&async_bfqq->ref));
++ bfq_put_queue(async_bfqq);
++ }
++ }
++
++ if (sync_bfqq != NULL) {
++ entity = &sync_bfqq->entity;
++ if (entity->sched_data != &bfqg->sched_data)
++ bfq_bfqq_move(bfqd, sync_bfqq, entity, bfqg);
++ }
++
++ return bfqg;
++}
++
++/**
++ * bfq_bic_change_cgroup - move @bic to @cgroup.
++ * @bic: the bic being migrated.
++ * @cgroup: the destination cgroup.
++ *
++ * When the task owning @bic is moved to @cgroup, @bic is immediately
++ * moved into its new parent group.
++ */
++static void bfq_bic_change_cgroup(struct bfq_io_cq *bic,
++ struct cgroup_subsys_state *css)
++{
++ struct bfq_data *bfqd;
++ unsigned long uninitialized_var(flags);
++
++ bfqd = bfq_get_bfqd_locked(&(bic->icq.q->elevator->elevator_data),
++ &flags);
++ if (bfqd != NULL) {
++ __bfq_bic_change_cgroup(bfqd, bic, css);
++ bfq_put_bfqd_unlock(bfqd, &flags);
++ }
++}
++
++/**
++ * bfq_bic_update_cgroup - update the cgroup of @bic.
++ * @bic: the @bic to update.
++ *
++ * Make sure that @bic is enqueued in the cgroup of the current task.
++ * We need this in addition to moving bics during the cgroup attach
++ * phase because the task owning @bic could be at its first disk
++ * access or we may end up in the root cgroup as the result of a
++ * memory allocation failure and here we try to move to the right
++ * group.
++ *
++ * Must be called under the queue lock. It is safe to use the returned
++ * value even after the rcu_read_unlock() as the migration/destruction
++ * paths act under the queue lock too. IOW it is impossible to race with
++ * group migration/destruction and end up with an invalid group as:
++ * a) here cgroup has not yet been destroyed, nor its destroy callback
++ * has started execution, as current holds a reference to it,
++ * b) if it is destroyed after rcu_read_unlock() [after current is
++ * migrated to a different cgroup] its attach() callback will have
++ * taken care of remove all the references to the old cgroup data.
++ */
++static struct bfq_group *bfq_bic_update_cgroup(struct bfq_io_cq *bic)
++{
++ struct bfq_data *bfqd = bic_to_bfqd(bic);
++ struct bfq_group *bfqg;
++ struct cgroup_subsys_state *css;
++
++ BUG_ON(bfqd == NULL);
++
++ rcu_read_lock();
++ css = task_css(current, bfqio_cgrp_id);
++ bfqg = __bfq_bic_change_cgroup(bfqd, bic, css);
++ rcu_read_unlock();
++
++ return bfqg;
++}
++
++/**
++ * bfq_flush_idle_tree - deactivate any entity on the idle tree of @st.
++ * @st: the service tree being flushed.
++ */
++static inline void bfq_flush_idle_tree(struct bfq_service_tree *st)
++{
++ struct bfq_entity *entity = st->first_idle;
++
++ for (; entity != NULL; entity = st->first_idle)
++ __bfq_deactivate_entity(entity, 0);
++}
++
++/**
++ * bfq_reparent_leaf_entity - move leaf entity to the root_group.
++ * @bfqd: the device data structure with the root group.
++ * @entity: the entity to move.
++ */
++static inline void bfq_reparent_leaf_entity(struct bfq_data *bfqd,
++ struct bfq_entity *entity)
++{
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++
++ BUG_ON(bfqq == NULL);
++ bfq_bfqq_move(bfqd, bfqq, entity, bfqd->root_group);
++ return;
++}
++
++/**
++ * bfq_reparent_active_entities - move to the root group all active
++ * entities.
++ * @bfqd: the device data structure with the root group.
++ * @bfqg: the group to move from.
++ * @st: the service tree with the entities.
++ *
++ * Needs queue_lock to be taken and reference to be valid over the call.
++ */
++static inline void bfq_reparent_active_entities(struct bfq_data *bfqd,
++ struct bfq_group *bfqg,
++ struct bfq_service_tree *st)
++{
++ struct rb_root *active = &st->active;
++ struct bfq_entity *entity = NULL;
++
++ if (!RB_EMPTY_ROOT(&st->active))
++ entity = bfq_entity_of(rb_first(active));
++
++ for (; entity != NULL; entity = bfq_entity_of(rb_first(active)))
++ bfq_reparent_leaf_entity(bfqd, entity);
++
++ if (bfqg->sched_data.in_service_entity != NULL)
++ bfq_reparent_leaf_entity(bfqd,
++ bfqg->sched_data.in_service_entity);
++
++ return;
++}
++
++/**
++ * bfq_destroy_group - destroy @bfqg.
++ * @bgrp: the bfqio_cgroup containing @bfqg.
++ * @bfqg: the group being destroyed.
++ *
++ * Destroy @bfqg, making sure that it is not referenced from its parent.
++ */
++static void bfq_destroy_group(struct bfqio_cgroup *bgrp, struct bfq_group *bfqg)
++{
++ struct bfq_data *bfqd;
++ struct bfq_service_tree *st;
++ struct bfq_entity *entity = bfqg->my_entity;
++ unsigned long uninitialized_var(flags);
++ int i;
++
++ hlist_del(&bfqg->group_node);
++
++ /*
++ * Empty all service_trees belonging to this group before
++ * deactivating the group itself.
++ */
++ for (i = 0; i < BFQ_IOPRIO_CLASSES; i++) {
++ st = bfqg->sched_data.service_tree + i;
++
++ /*
++ * The idle tree may still contain bfq_queues belonging
++ * to exited task because they never migrated to a different
++ * cgroup from the one being destroyed now. No one else
++ * can access them so it's safe to act without any lock.
++ */
++ bfq_flush_idle_tree(st);
++
++ /*
++ * It may happen that some queues are still active
++ * (busy) upon group destruction (if the corresponding
++ * processes have been forced to terminate). We move
++ * all the leaf entities corresponding to these queues
++ * to the root_group.
++ * Also, it may happen that the group has an entity
++ * in service, which is disconnected from the active
++ * tree: it must be moved, too.
++ * There is no need to put the sync queues, as the
++ * scheduler has taken no reference.
++ */
++ bfqd = bfq_get_bfqd_locked(&bfqg->bfqd, &flags);
++ if (bfqd != NULL) {
++ bfq_reparent_active_entities(bfqd, bfqg, st);
++ bfq_put_bfqd_unlock(bfqd, &flags);
++ }
++ BUG_ON(!RB_EMPTY_ROOT(&st->active));
++ BUG_ON(!RB_EMPTY_ROOT(&st->idle));
++ }
++ BUG_ON(bfqg->sched_data.next_in_service != NULL);
++ BUG_ON(bfqg->sched_data.in_service_entity != NULL);
++
++ /*
++ * We may race with device destruction, take extra care when
++ * dereferencing bfqg->bfqd.
++ */
++ bfqd = bfq_get_bfqd_locked(&bfqg->bfqd, &flags);
++ if (bfqd != NULL) {
++ hlist_del(&bfqg->bfqd_node);
++ __bfq_deactivate_entity(entity, 0);
++ bfq_put_async_queues(bfqd, bfqg);
++ bfq_put_bfqd_unlock(bfqd, &flags);
++ }
++ BUG_ON(entity->tree != NULL);
++
++ /*
++ * No need to defer the kfree() to the end of the RCU grace
++ * period: we are called from the destroy() callback of our
++ * cgroup, so we can be sure that no one is a) still using
++ * this cgroup or b) doing lookups in it.
++ */
++ kfree(bfqg);
++}
++
++static void bfq_end_wr_async(struct bfq_data *bfqd)
++{
++ struct hlist_node *tmp;
++ struct bfq_group *bfqg;
++
++ hlist_for_each_entry_safe(bfqg, tmp, &bfqd->group_list, bfqd_node)
++ bfq_end_wr_async_queues(bfqd, bfqg);
++ bfq_end_wr_async_queues(bfqd, bfqd->root_group);
++}
++
++/**
++ * bfq_disconnect_groups - disconnect @bfqd from all its groups.
++ * @bfqd: the device descriptor being exited.
++ *
++ * When the device exits we just make sure that no lookup can return
++ * the now unused group structures. They will be deallocated on cgroup
++ * destruction.
++ */
++static void bfq_disconnect_groups(struct bfq_data *bfqd)
++{
++ struct hlist_node *tmp;
++ struct bfq_group *bfqg;
++
++ bfq_log(bfqd, "disconnect_groups beginning");
++ hlist_for_each_entry_safe(bfqg, tmp, &bfqd->group_list, bfqd_node) {
++ hlist_del(&bfqg->bfqd_node);
++
++ __bfq_deactivate_entity(bfqg->my_entity, 0);
++
++ /*
++ * Don't remove from the group hash, just set an
++ * invalid key. No lookups can race with the
++ * assignment as bfqd is being destroyed; this
++ * implies also that new elements cannot be added
++ * to the list.
++ */
++ rcu_assign_pointer(bfqg->bfqd, NULL);
++
++ bfq_log(bfqd, "disconnect_groups: put async for group %p",
++ bfqg);
++ bfq_put_async_queues(bfqd, bfqg);
++ }
++}
++
++static inline void bfq_free_root_group(struct bfq_data *bfqd)
++{
++ struct bfqio_cgroup *bgrp = &bfqio_root_cgroup;
++ struct bfq_group *bfqg = bfqd->root_group;
++
++ bfq_put_async_queues(bfqd, bfqg);
++
++ spin_lock_irq(&bgrp->lock);
++ hlist_del_rcu(&bfqg->group_node);
++ spin_unlock_irq(&bgrp->lock);
++
++ /*
++ * No need to synchronize_rcu() here: since the device is gone
++ * there cannot be any read-side access to its root_group.
++ */
++ kfree(bfqg);
++}
++
++static struct bfq_group *bfq_alloc_root_group(struct bfq_data *bfqd, int node)
++{
++ struct bfq_group *bfqg;
++ struct bfqio_cgroup *bgrp;
++ int i;
++
++ bfqg = kzalloc_node(sizeof(*bfqg), GFP_KERNEL, node);
++ if (bfqg == NULL)
++ return NULL;
++
++ bfqg->entity.parent = NULL;
++ for (i = 0; i < BFQ_IOPRIO_CLASSES; i++)
++ bfqg->sched_data.service_tree[i] = BFQ_SERVICE_TREE_INIT;
++
++ bgrp = &bfqio_root_cgroup;
++ spin_lock_irq(&bgrp->lock);
++ rcu_assign_pointer(bfqg->bfqd, bfqd);
++ hlist_add_head_rcu(&bfqg->group_node, &bgrp->group_data);
++ spin_unlock_irq(&bgrp->lock);
++
++ return bfqg;
++}
++
++#define SHOW_FUNCTION(__VAR) \
++static u64 bfqio_cgroup_##__VAR##_read(struct cgroup_subsys_state *css, \
++ struct cftype *cftype) \
++{ \
++ struct bfqio_cgroup *bgrp = css_to_bfqio(css); \
++ u64 ret = -ENODEV; \
++ \
++ mutex_lock(&bfqio_mutex); \
++ if (bfqio_is_removed(bgrp)) \
++ goto out_unlock; \
++ \
++ spin_lock_irq(&bgrp->lock); \
++ ret = bgrp->__VAR; \
++ spin_unlock_irq(&bgrp->lock); \
++ \
++out_unlock: \
++ mutex_unlock(&bfqio_mutex); \
++ return ret; \
++}
++
++SHOW_FUNCTION(weight);
++SHOW_FUNCTION(ioprio);
++SHOW_FUNCTION(ioprio_class);
++#undef SHOW_FUNCTION
++
++#define STORE_FUNCTION(__VAR, __MIN, __MAX) \
++static int bfqio_cgroup_##__VAR##_write(struct cgroup_subsys_state *css,\
++ struct cftype *cftype, \
++ u64 val) \
++{ \
++ struct bfqio_cgroup *bgrp = css_to_bfqio(css); \
++ struct bfq_group *bfqg; \
++ int ret = -EINVAL; \
++ \
++ if (val < (__MIN) || val > (__MAX)) \
++ return ret; \
++ \
++ ret = -ENODEV; \
++ mutex_lock(&bfqio_mutex); \
++ if (bfqio_is_removed(bgrp)) \
++ goto out_unlock; \
++ ret = 0; \
++ \
++ spin_lock_irq(&bgrp->lock); \
++ bgrp->__VAR = (unsigned short)val; \
++ hlist_for_each_entry(bfqg, &bgrp->group_data, group_node) { \
++ /* \
++ * Setting the ioprio_changed flag of the entity \
++ * to 1 with new_##__VAR == ##__VAR would re-set \
++ * the value of the weight to its ioprio mapping. \
++ * Set the flag only if necessary. \
++ */ \
++ if ((unsigned short)val != bfqg->entity.new_##__VAR) { \
++ bfqg->entity.new_##__VAR = (unsigned short)val; \
++ /* \
++ * Make sure that the above new value has been \
++ * stored in bfqg->entity.new_##__VAR before \
++ * setting the ioprio_changed flag. In fact, \
++ * this flag may be read asynchronously (in \
++ * critical sections protected by a different \
++ * lock than that held here), and finding this \
++ * flag set may cause the execution of the code \
++ * for updating parameters whose value may \
++ * depend also on bfqg->entity.new_##__VAR (in \
++ * __bfq_entity_update_weight_prio). \
++ * This barrier makes sure that the new value \
++ * of bfqg->entity.new_##__VAR is correctly \
++ * seen in that code. \
++ */ \
++ smp_wmb(); \
++ bfqg->entity.ioprio_changed = 1; \
++ } \
++ } \
++ spin_unlock_irq(&bgrp->lock); \
++ \
++out_unlock: \
++ mutex_unlock(&bfqio_mutex); \
++ return ret; \
++}
++
++STORE_FUNCTION(weight, BFQ_MIN_WEIGHT, BFQ_MAX_WEIGHT);
++STORE_FUNCTION(ioprio, 0, IOPRIO_BE_NR - 1);
++STORE_FUNCTION(ioprio_class, IOPRIO_CLASS_RT, IOPRIO_CLASS_IDLE);
++#undef STORE_FUNCTION
++
++static struct cftype bfqio_files[] = {
++ {
++ .name = "weight",
++ .read_u64 = bfqio_cgroup_weight_read,
++ .write_u64 = bfqio_cgroup_weight_write,
++ },
++ {
++ .name = "ioprio",
++ .read_u64 = bfqio_cgroup_ioprio_read,
++ .write_u64 = bfqio_cgroup_ioprio_write,
++ },
++ {
++ .name = "ioprio_class",
++ .read_u64 = bfqio_cgroup_ioprio_class_read,
++ .write_u64 = bfqio_cgroup_ioprio_class_write,
++ },
++ { }, /* terminate */
++};
++
++static struct cgroup_subsys_state *bfqio_create(struct cgroup_subsys_state
++ *parent_css)
++{
++ struct bfqio_cgroup *bgrp;
++
++ if (parent_css != NULL) {
++ bgrp = kzalloc(sizeof(*bgrp), GFP_KERNEL);
++ if (bgrp == NULL)
++ return ERR_PTR(-ENOMEM);
++ } else
++ bgrp = &bfqio_root_cgroup;
++
++ spin_lock_init(&bgrp->lock);
++ INIT_HLIST_HEAD(&bgrp->group_data);
++ bgrp->ioprio = BFQ_DEFAULT_GRP_IOPRIO;
++ bgrp->ioprio_class = BFQ_DEFAULT_GRP_CLASS;
++
++ return &bgrp->css;
++}
++
++/*
++ * We cannot support shared io contexts, as we have no means to support
++ * two tasks with the same ioc in two different groups without major rework
++ * of the main bic/bfqq data structures. By now we allow a task to change
++ * its cgroup only if it's the only owner of its ioc; the drawback of this
++ * behavior is that a group containing a task that forked using CLONE_IO
++ * will not be destroyed until the tasks sharing the ioc die.
++ */
++static int bfqio_can_attach(struct cgroup_subsys_state *css,
++ struct cgroup_taskset *tset)
++{
++ struct task_struct *task;
++ struct io_context *ioc;
++ int ret = 0;
++
++ cgroup_taskset_for_each(task, tset) {
++ /*
++ * task_lock() is needed to avoid races with
++ * exit_io_context()
++ */
++ task_lock(task);
++ ioc = task->io_context;
++ if (ioc != NULL && atomic_read(&ioc->nr_tasks) > 1)
++ /*
++ * ioc == NULL means that the task is either too
++ * young or exiting: if it has still no ioc the
++ * ioc can't be shared, if the task is exiting the
++ * attach will fail anyway, no matter what we
++ * return here.
++ */
++ ret = -EINVAL;
++ task_unlock(task);
++ if (ret)
++ break;
++ }
++
++ return ret;
++}
++
++static void bfqio_attach(struct cgroup_subsys_state *css,
++ struct cgroup_taskset *tset)
++{
++ struct task_struct *task;
++ struct io_context *ioc;
++ struct io_cq *icq;
++
++ /*
++ * IMPORTANT NOTE: The move of more than one process at a time to a
++ * new group has not yet been tested.
++ */
++ cgroup_taskset_for_each(task, tset) {
++ ioc = get_task_io_context(task, GFP_ATOMIC, NUMA_NO_NODE);
++ if (ioc) {
++ /*
++ * Handle cgroup change here.
++ */
++ rcu_read_lock();
++ hlist_for_each_entry_rcu(icq, &ioc->icq_list, ioc_node)
++ if (!strncmp(
++ icq->q->elevator->type->elevator_name,
++ "bfq", ELV_NAME_MAX))
++ bfq_bic_change_cgroup(icq_to_bic(icq),
++ css);
++ rcu_read_unlock();
++ put_io_context(ioc);
++ }
++ }
++}
++
++static void bfqio_destroy(struct cgroup_subsys_state *css)
++{
++ struct bfqio_cgroup *bgrp = css_to_bfqio(css);
++ struct hlist_node *tmp;
++ struct bfq_group *bfqg;
++
++ /*
++ * Since we are destroying the cgroup, there are no more tasks
++ * referencing it, and all the RCU grace periods that may have
++ * referenced it are ended (as the destruction of the parent
++ * cgroup is RCU-safe); bgrp->group_data will not be accessed by
++ * anything else and we don't need any synchronization.
++ */
++ hlist_for_each_entry_safe(bfqg, tmp, &bgrp->group_data, group_node)
++ bfq_destroy_group(bgrp, bfqg);
++
++ BUG_ON(!hlist_empty(&bgrp->group_data));
++
++ kfree(bgrp);
++}
++
++static int bfqio_css_online(struct cgroup_subsys_state *css)
++{
++ struct bfqio_cgroup *bgrp = css_to_bfqio(css);
++
++ mutex_lock(&bfqio_mutex);
++ bgrp->online = true;
++ mutex_unlock(&bfqio_mutex);
++
++ return 0;
++}
++
++static void bfqio_css_offline(struct cgroup_subsys_state *css)
++{
++ struct bfqio_cgroup *bgrp = css_to_bfqio(css);
++
++ mutex_lock(&bfqio_mutex);
++ bgrp->online = false;
++ mutex_unlock(&bfqio_mutex);
++}
++
++struct cgroup_subsys bfqio_cgrp_subsys = {
++ .css_alloc = bfqio_create,
++ .css_online = bfqio_css_online,
++ .css_offline = bfqio_css_offline,
++ .can_attach = bfqio_can_attach,
++ .attach = bfqio_attach,
++ .css_free = bfqio_destroy,
++ .legacy_cftypes = bfqio_files,
++};
++#else
++static inline void bfq_init_entity(struct bfq_entity *entity,
++ struct bfq_group *bfqg)
++{
++ entity->weight = entity->new_weight;
++ entity->orig_weight = entity->new_weight;
++ entity->ioprio = entity->new_ioprio;
++ entity->ioprio_class = entity->new_ioprio_class;
++ entity->sched_data = &bfqg->sched_data;
++}
++
++static inline struct bfq_group *
++bfq_bic_update_cgroup(struct bfq_io_cq *bic)
++{
++ struct bfq_data *bfqd = bic_to_bfqd(bic);
++ return bfqd->root_group;
++}
++
++static inline void bfq_bfqq_move(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq,
++ struct bfq_entity *entity,
++ struct bfq_group *bfqg)
++{
++}
++
++static void bfq_end_wr_async(struct bfq_data *bfqd)
++{
++ bfq_end_wr_async_queues(bfqd, bfqd->root_group);
++}
++
++static inline void bfq_disconnect_groups(struct bfq_data *bfqd)
++{
++ bfq_put_async_queues(bfqd, bfqd->root_group);
++}
++
++static inline void bfq_free_root_group(struct bfq_data *bfqd)
++{
++ kfree(bfqd->root_group);
++}
++
++static struct bfq_group *bfq_alloc_root_group(struct bfq_data *bfqd, int node)
++{
++ struct bfq_group *bfqg;
++ int i;
++
++ bfqg = kmalloc_node(sizeof(*bfqg), GFP_KERNEL | __GFP_ZERO, node);
++ if (bfqg == NULL)
++ return NULL;
++
++ for (i = 0; i < BFQ_IOPRIO_CLASSES; i++)
++ bfqg->sched_data.service_tree[i] = BFQ_SERVICE_TREE_INIT;
++
++ return bfqg;
++}
++#endif
+diff --git a/block/bfq-ioc.c b/block/bfq-ioc.c
+new file mode 100644
+index 0000000..7f6b000
+--- /dev/null
++++ b/block/bfq-ioc.c
+@@ -0,0 +1,36 @@
++/*
++ * BFQ: I/O context handling.
++ *
++ * Based on ideas and code from CFQ:
++ * Copyright (C) 2003 Jens Axboe <axboe@kernel.dk>
++ *
++ * Copyright (C) 2008 Fabio Checconi <fabio@gandalf.sssup.it>
++ * Paolo Valente <paolo.valente@unimore.it>
++ *
++ * Copyright (C) 2010 Paolo Valente <paolo.valente@unimore.it>
++ */
++
++/**
++ * icq_to_bic - convert iocontext queue structure to bfq_io_cq.
++ * @icq: the iocontext queue.
++ */
++static inline struct bfq_io_cq *icq_to_bic(struct io_cq *icq)
++{
++ /* bic->icq is the first member, %NULL will convert to %NULL */
++ return container_of(icq, struct bfq_io_cq, icq);
++}
++
++/**
++ * bfq_bic_lookup - search into @ioc a bic associated to @bfqd.
++ * @bfqd: the lookup key.
++ * @ioc: the io_context of the process doing I/O.
++ *
++ * Queue lock must be held.
++ */
++static inline struct bfq_io_cq *bfq_bic_lookup(struct bfq_data *bfqd,
++ struct io_context *ioc)
++{
++ if (ioc)
++ return icq_to_bic(ioc_lookup_icq(ioc, bfqd->queue));
++ return NULL;
++}
+diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
+new file mode 100644
+index 0000000..773b2ee
+--- /dev/null
++++ b/block/bfq-iosched.c
+@@ -0,0 +1,3898 @@
++/*
++ * Budget Fair Queueing (BFQ) disk scheduler.
++ *
++ * Based on ideas and code from CFQ:
++ * Copyright (C) 2003 Jens Axboe <axboe@kernel.dk>
++ *
++ * Copyright (C) 2008 Fabio Checconi <fabio@gandalf.sssup.it>
++ * Paolo Valente <paolo.valente@unimore.it>
++ *
++ * Copyright (C) 2010 Paolo Valente <paolo.valente@unimore.it>
++ *
++ * Licensed under the GPL-2 as detailed in the accompanying COPYING.BFQ
++ * file.
++ *
++ * BFQ is a proportional-share storage-I/O scheduling algorithm based on
++ * the slice-by-slice service scheme of CFQ. But BFQ assigns budgets,
++ * measured in number of sectors, to processes instead of time slices. The
++ * device is not granted to the in-service process for a given time slice,
++ * but until it has exhausted its assigned budget. This change from the time
++ * to the service domain allows BFQ to distribute the device throughput
++ * among processes as desired, without any distortion due to ZBR, workload
++ * fluctuations or other factors. BFQ uses an ad hoc internal scheduler,
++ * called B-WF2Q+, to schedule processes according to their budgets. More
++ * precisely, BFQ schedules queues associated to processes. Thanks to the
++ * accurate policy of B-WF2Q+, BFQ can afford to assign high budgets to
++ * I/O-bound processes issuing sequential requests (to boost the
++ * throughput), and yet guarantee a low latency to interactive and soft
++ * real-time applications.
++ *
++ * BFQ is described in [1], where also a reference to the initial, more
++ * theoretical paper on BFQ can be found. The interested reader can find
++ * in the latter paper full details on the main algorithm, as well as
++ * formulas of the guarantees and formal proofs of all the properties.
++ * With respect to the version of BFQ presented in these papers, this
++ * implementation adds a few more heuristics, such as the one that
++ * guarantees a low latency to soft real-time applications, and a
++ * hierarchical extension based on H-WF2Q+.
++ *
++ * B-WF2Q+ is based on WF2Q+, that is described in [2], together with
++ * H-WF2Q+, while the augmented tree used to implement B-WF2Q+ with O(log N)
++ * complexity derives from the one introduced with EEVDF in [3].
++ *
++ * [1] P. Valente and M. Andreolini, ``Improving Application Responsiveness
++ * with the BFQ Disk I/O Scheduler'',
++ * Proceedings of the 5th Annual International Systems and Storage
++ * Conference (SYSTOR '12), June 2012.
++ *
++ * http://algogroup.unimo.it/people/paolo/disk_sched/bf1-v1-suite-results.pdf
++ *
++ * [2] Jon C.R. Bennett and H. Zhang, ``Hierarchical Packet Fair Queueing
++ * Algorithms,'' IEEE/ACM Transactions on Networking, 5(5):675-689,
++ * Oct 1997.
++ *
++ * http://www.cs.cmu.edu/~hzhang/papers/TON-97-Oct.ps.gz
++ *
++ * [3] I. Stoica and H. Abdel-Wahab, ``Earliest Eligible Virtual Deadline
++ * First: A Flexible and Accurate Mechanism for Proportional Share
++ * Resource Allocation,'' technical report.
++ *
++ * http://www.cs.berkeley.edu/~istoica/papers/eevdf-tr-95.pdf
++ */
++#include <linux/module.h>
++#include <linux/slab.h>
++#include <linux/blkdev.h>
++#include <linux/cgroup.h>
++#include <linux/elevator.h>
++#include <linux/jiffies.h>
++#include <linux/rbtree.h>
++#include <linux/ioprio.h>
++#include "bfq.h"
++#include "blk.h"
++
++/* Expiration time of sync (0) and async (1) requests, in jiffies. */
++static const int bfq_fifo_expire[2] = { HZ / 4, HZ / 8 };
++
++/* Maximum backwards seek, in KiB. */
++static const int bfq_back_max = 16 * 1024;
++
++/* Penalty of a backwards seek, in number of sectors. */
++static const int bfq_back_penalty = 2;
++
++/* Idling period duration, in jiffies. */
++static int bfq_slice_idle = HZ / 125;
++
++/* Default maximum budget values, in sectors and number of requests. */
++static const int bfq_default_max_budget = 16 * 1024;
++static const int bfq_max_budget_async_rq = 4;
++
++/*
++ * Async to sync throughput distribution is controlled as follows:
++ * when an async request is served, the entity is charged the number
++ * of sectors of the request, multiplied by the factor below
++ */
++static const int bfq_async_charge_factor = 10;
++
++/* Default timeout values, in jiffies, approximating CFQ defaults. */
++static const int bfq_timeout_sync = HZ / 8;
++static int bfq_timeout_async = HZ / 25;
++
++struct kmem_cache *bfq_pool;
++
++/* Below this threshold (in ms), we consider thinktime immediate. */
++#define BFQ_MIN_TT 2
++
++/* hw_tag detection: parallel requests threshold and min samples needed. */
++#define BFQ_HW_QUEUE_THRESHOLD 4
++#define BFQ_HW_QUEUE_SAMPLES 32
++
++#define BFQQ_SEEK_THR (sector_t)(8 * 1024)
++#define BFQQ_SEEKY(bfqq) ((bfqq)->seek_mean > BFQQ_SEEK_THR)
++
++/* Min samples used for peak rate estimation (for autotuning). */
++#define BFQ_PEAK_RATE_SAMPLES 32
++
++/* Shift used for peak rate fixed precision calculations. */
++#define BFQ_RATE_SHIFT 16
++
++/*
++ * By default, BFQ computes the duration of the weight raising for
++ * interactive applications automatically, using the following formula:
++ * duration = (R / r) * T, where r is the peak rate of the device, and
++ * R and T are two reference parameters.
++ * In particular, R is the peak rate of the reference device (see below),
++ * and T is a reference time: given the systems that are likely to be
++ * installed on the reference device according to its speed class, T is
++ * about the maximum time needed, under BFQ and while reading two files in
++ * parallel, to load typical large applications on these systems.
++ * In practice, the slower/faster the device at hand is, the more/less it
++ * takes to load applications with respect to the reference device.
++ * Accordingly, the longer/shorter BFQ grants weight raising to interactive
++ * applications.
++ *
++ * BFQ uses four different reference pairs (R, T), depending on:
++ * . whether the device is rotational or non-rotational;
++ * . whether the device is slow, such as old or portable HDDs, as well as
++ * SD cards, or fast, such as newer HDDs and SSDs.
++ *
++ * The device's speed class is dynamically (re)detected in
++ * bfq_update_peak_rate() every time the estimated peak rate is updated.
++ *
++ * In the following definitions, R_slow[0]/R_fast[0] and T_slow[0]/T_fast[0]
++ * are the reference values for a slow/fast rotational device, whereas
++ * R_slow[1]/R_fast[1] and T_slow[1]/T_fast[1] are the reference values for
++ * a slow/fast non-rotational device. Finally, device_speed_thresh are the
++ * thresholds used to switch between speed classes.
++ * Both the reference peak rates and the thresholds are measured in
++ * sectors/usec, left-shifted by BFQ_RATE_SHIFT.
++ */
++static int R_slow[2] = {1536, 10752};
++static int R_fast[2] = {17415, 34791};
++/*
++ * To improve readability, a conversion function is used to initialize the
++ * following arrays, which entails that they can be initialized only in a
++ * function.
++ */
++static int T_slow[2];
++static int T_fast[2];
++static int device_speed_thresh[2];
++
++#define BFQ_SERVICE_TREE_INIT ((struct bfq_service_tree) \
++ { RB_ROOT, RB_ROOT, NULL, NULL, 0, 0 })
++
++#define RQ_BIC(rq) ((struct bfq_io_cq *) (rq)->elv.priv[0])
++#define RQ_BFQQ(rq) ((rq)->elv.priv[1])
++
++static inline void bfq_schedule_dispatch(struct bfq_data *bfqd);
++
++#include "bfq-ioc.c"
++#include "bfq-sched.c"
++#include "bfq-cgroup.c"
++
++#define bfq_class_idle(bfqq) ((bfqq)->entity.ioprio_class ==\
++ IOPRIO_CLASS_IDLE)
++#define bfq_class_rt(bfqq) ((bfqq)->entity.ioprio_class ==\
++ IOPRIO_CLASS_RT)
++
++#define bfq_sample_valid(samples) ((samples) > 80)
++
++/*
++ * The following macro groups conditions that need to be evaluated when
++ * checking if existing queues and groups form a symmetric scenario
++ * and therefore idling can be reduced or disabled for some of the
++ * queues. See the comment to the function bfq_bfqq_must_not_expire()
++ * for further details.
++ */
++#ifdef CONFIG_CGROUP_BFQIO
++#define symmetric_scenario (!bfqd->active_numerous_groups && \
++ !bfq_differentiated_weights(bfqd))
++#else
++#define symmetric_scenario (!bfq_differentiated_weights(bfqd))
++#endif
++
++/*
++ * We regard a request as SYNC, if either it's a read or has the SYNC bit
++ * set (in which case it could also be a direct WRITE).
++ */
++static inline int bfq_bio_sync(struct bio *bio)
++{
++ if (bio_data_dir(bio) == READ || (bio->bi_rw & REQ_SYNC))
++ return 1;
++
++ return 0;
++}
++
++/*
++ * Scheduler run of queue, if there are requests pending and no one in the
++ * driver that will restart queueing.
++ */
++static inline void bfq_schedule_dispatch(struct bfq_data *bfqd)
++{
++ if (bfqd->queued != 0) {
++ bfq_log(bfqd, "schedule dispatch");
++ kblockd_schedule_work(&bfqd->unplug_work);
++ }
++}
++
++/*
++ * Lifted from AS - choose which of rq1 and rq2 that is best served now.
++ * We choose the request that is closesr to the head right now. Distance
++ * behind the head is penalized and only allowed to a certain extent.
++ */
++static struct request *bfq_choose_req(struct bfq_data *bfqd,
++ struct request *rq1,
++ struct request *rq2,
++ sector_t last)
++{
++ sector_t s1, s2, d1 = 0, d2 = 0;
++ unsigned long back_max;
++#define BFQ_RQ1_WRAP 0x01 /* request 1 wraps */
++#define BFQ_RQ2_WRAP 0x02 /* request 2 wraps */
++ unsigned wrap = 0; /* bit mask: requests behind the disk head? */
++
++ if (rq1 == NULL || rq1 == rq2)
++ return rq2;
++ if (rq2 == NULL)
++ return rq1;
++
++ if (rq_is_sync(rq1) && !rq_is_sync(rq2))
++ return rq1;
++ else if (rq_is_sync(rq2) && !rq_is_sync(rq1))
++ return rq2;
++ if ((rq1->cmd_flags & REQ_META) && !(rq2->cmd_flags & REQ_META))
++ return rq1;
++ else if ((rq2->cmd_flags & REQ_META) && !(rq1->cmd_flags & REQ_META))
++ return rq2;
++
++ s1 = blk_rq_pos(rq1);
++ s2 = blk_rq_pos(rq2);
++
++ /*
++ * By definition, 1KiB is 2 sectors.
++ */
++ back_max = bfqd->bfq_back_max * 2;
++
++ /*
++ * Strict one way elevator _except_ in the case where we allow
++ * short backward seeks which are biased as twice the cost of a
++ * similar forward seek.
++ */
++ if (s1 >= last)
++ d1 = s1 - last;
++ else if (s1 + back_max >= last)
++ d1 = (last - s1) * bfqd->bfq_back_penalty;
++ else
++ wrap |= BFQ_RQ1_WRAP;
++
++ if (s2 >= last)
++ d2 = s2 - last;
++ else if (s2 + back_max >= last)
++ d2 = (last - s2) * bfqd->bfq_back_penalty;
++ else
++ wrap |= BFQ_RQ2_WRAP;
++
++ /* Found required data */
++
++ /*
++ * By doing switch() on the bit mask "wrap" we avoid having to
++ * check two variables for all permutations: --> faster!
++ */
++ switch (wrap) {
++ case 0: /* common case for CFQ: rq1 and rq2 not wrapped */
++ if (d1 < d2)
++ return rq1;
++ else if (d2 < d1)
++ return rq2;
++ else {
++ if (s1 >= s2)
++ return rq1;
++ else
++ return rq2;
++ }
++
++ case BFQ_RQ2_WRAP:
++ return rq1;
++ case BFQ_RQ1_WRAP:
++ return rq2;
++ case (BFQ_RQ1_WRAP|BFQ_RQ2_WRAP): /* both rqs wrapped */
++ default:
++ /*
++ * Since both rqs are wrapped,
++ * start with the one that's further behind head
++ * (--> only *one* back seek required),
++ * since back seek takes more time than forward.
++ */
++ if (s1 <= s2)
++ return rq1;
++ else
++ return rq2;
++ }
++}
++
++static struct bfq_queue *
++bfq_rq_pos_tree_lookup(struct bfq_data *bfqd, struct rb_root *root,
++ sector_t sector, struct rb_node **ret_parent,
++ struct rb_node ***rb_link)
++{
++ struct rb_node **p, *parent;
++ struct bfq_queue *bfqq = NULL;
++
++ parent = NULL;
++ p = &root->rb_node;
++ while (*p) {
++ struct rb_node **n;
++
++ parent = *p;
++ bfqq = rb_entry(parent, struct bfq_queue, pos_node);
++
++ /*
++ * Sort strictly based on sector. Smallest to the left,
++ * largest to the right.
++ */
++ if (sector > blk_rq_pos(bfqq->next_rq))
++ n = &(*p)->rb_right;
++ else if (sector < blk_rq_pos(bfqq->next_rq))
++ n = &(*p)->rb_left;
++ else
++ break;
++ p = n;
++ bfqq = NULL;
++ }
++
++ *ret_parent = parent;
++ if (rb_link)
++ *rb_link = p;
++
++ bfq_log(bfqd, "rq_pos_tree_lookup %llu: returning %d",
++ (long long unsigned)sector,
++ bfqq != NULL ? bfqq->pid : 0);
++
++ return bfqq;
++}
++
++static void bfq_rq_pos_tree_add(struct bfq_data *bfqd, struct bfq_queue *bfqq)
++{
++ struct rb_node **p, *parent;
++ struct bfq_queue *__bfqq;
++
++ if (bfqq->pos_root != NULL) {
++ rb_erase(&bfqq->pos_node, bfqq->pos_root);
++ bfqq->pos_root = NULL;
++ }
++
++ if (bfq_class_idle(bfqq))
++ return;
++ if (!bfqq->next_rq)
++ return;
++
++ bfqq->pos_root = &bfqd->rq_pos_tree;
++ __bfqq = bfq_rq_pos_tree_lookup(bfqd, bfqq->pos_root,
++ blk_rq_pos(bfqq->next_rq), &parent, &p);
++ if (__bfqq == NULL) {
++ rb_link_node(&bfqq->pos_node, parent, p);
++ rb_insert_color(&bfqq->pos_node, bfqq->pos_root);
++ } else
++ bfqq->pos_root = NULL;
++}
++
++/*
++ * Tell whether there are active queues or groups with differentiated weights.
++ */
++static inline bool bfq_differentiated_weights(struct bfq_data *bfqd)
++{
++ /*
++ * For weights to differ, at least one of the trees must contain
++ * at least two nodes.
++ */
++ return (!RB_EMPTY_ROOT(&bfqd->queue_weights_tree) &&
++ (bfqd->queue_weights_tree.rb_node->rb_left ||
++ bfqd->queue_weights_tree.rb_node->rb_right)
++#ifdef CONFIG_CGROUP_BFQIO
++ ) ||
++ (!RB_EMPTY_ROOT(&bfqd->group_weights_tree) &&
++ (bfqd->group_weights_tree.rb_node->rb_left ||
++ bfqd->group_weights_tree.rb_node->rb_right)
++#endif
++ );
++}
++
++/*
++ * If the weight-counter tree passed as input contains no counter for
++ * the weight of the input entity, then add that counter; otherwise just
++ * increment the existing counter.
++ *
++ * Note that weight-counter trees contain few nodes in mostly symmetric
++ * scenarios. For example, if all queues have the same weight, then the
++ * weight-counter tree for the queues may contain at most one node.
++ * This holds even if low_latency is on, because weight-raised queues
++ * are not inserted in the tree.
++ * In most scenarios, the rate at which nodes are created/destroyed
++ * should be low too.
++ */
++static void bfq_weights_tree_add(struct bfq_data *bfqd,
++ struct bfq_entity *entity,
++ struct rb_root *root)
++{
++ struct rb_node **new = &(root->rb_node), *parent = NULL;
++
++ /*
++ * Do not insert if the entity is already associated with a
++ * counter, which happens if:
++ * 1) the entity is associated with a queue,
++ * 2) a request arrival has caused the queue to become both
++ * non-weight-raised, and hence change its weight, and
++ * backlogged; in this respect, each of the two events
++ * causes an invocation of this function,
++ * 3) this is the invocation of this function caused by the
++ * second event. This second invocation is actually useless,
++ * and we handle this fact by exiting immediately. More
++ * efficient or clearer solutions might possibly be adopted.
++ */
++ if (entity->weight_counter)
++ return;
++
++ while (*new) {
++ struct bfq_weight_counter *__counter = container_of(*new,
++ struct bfq_weight_counter,
++ weights_node);
++ parent = *new;
++
++ if (entity->weight == __counter->weight) {
++ entity->weight_counter = __counter;
++ goto inc_counter;
++ }
++ if (entity->weight < __counter->weight)
++ new = &((*new)->rb_left);
++ else
++ new = &((*new)->rb_right);
++ }
++
++ entity->weight_counter = kzalloc(sizeof(struct bfq_weight_counter),
++ GFP_ATOMIC);
++ entity->weight_counter->weight = entity->weight;
++ rb_link_node(&entity->weight_counter->weights_node, parent, new);
++ rb_insert_color(&entity->weight_counter->weights_node, root);
++
++inc_counter:
++ entity->weight_counter->num_active++;
++}
++
++/*
++ * Decrement the weight counter associated with the entity, and, if the
++ * counter reaches 0, remove the counter from the tree.
++ * See the comments to the function bfq_weights_tree_add() for considerations
++ * about overhead.
++ */
++static void bfq_weights_tree_remove(struct bfq_data *bfqd,
++ struct bfq_entity *entity,
++ struct rb_root *root)
++{
++ if (!entity->weight_counter)
++ return;
++
++ BUG_ON(RB_EMPTY_ROOT(root));
++ BUG_ON(entity->weight_counter->weight != entity->weight);
++
++ BUG_ON(!entity->weight_counter->num_active);
++ entity->weight_counter->num_active--;
++ if (entity->weight_counter->num_active > 0)
++ goto reset_entity_pointer;
++
++ rb_erase(&entity->weight_counter->weights_node, root);
++ kfree(entity->weight_counter);
++
++reset_entity_pointer:
++ entity->weight_counter = NULL;
++}
++
++static struct request *bfq_find_next_rq(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq,
++ struct request *last)
++{
++ struct rb_node *rbnext = rb_next(&last->rb_node);
++ struct rb_node *rbprev = rb_prev(&last->rb_node);
++ struct request *next = NULL, *prev = NULL;
++
++ BUG_ON(RB_EMPTY_NODE(&last->rb_node));
++
++ if (rbprev != NULL)
++ prev = rb_entry_rq(rbprev);
++
++ if (rbnext != NULL)
++ next = rb_entry_rq(rbnext);
++ else {
++ rbnext = rb_first(&bfqq->sort_list);
++ if (rbnext && rbnext != &last->rb_node)
++ next = rb_entry_rq(rbnext);
++ }
++
++ return bfq_choose_req(bfqd, next, prev, blk_rq_pos(last));
++}
++
++/* see the definition of bfq_async_charge_factor for details */
++static inline unsigned long bfq_serv_to_charge(struct request *rq,
++ struct bfq_queue *bfqq)
++{
++ return blk_rq_sectors(rq) *
++ (1 + ((!bfq_bfqq_sync(bfqq)) * (bfqq->wr_coeff == 1) *
++ bfq_async_charge_factor));
++}
++
++/**
++ * bfq_updated_next_req - update the queue after a new next_rq selection.
++ * @bfqd: the device data the queue belongs to.
++ * @bfqq: the queue to update.
++ *
++ * If the first request of a queue changes we make sure that the queue
++ * has enough budget to serve at least its first request (if the
++ * request has grown). We do this because if the queue has not enough
++ * budget for its first request, it has to go through two dispatch
++ * rounds to actually get it dispatched.
++ */
++static void bfq_updated_next_req(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ struct bfq_entity *entity = &bfqq->entity;
++ struct bfq_service_tree *st = bfq_entity_service_tree(entity);
++ struct request *next_rq = bfqq->next_rq;
++ unsigned long new_budget;
++
++ if (next_rq == NULL)
++ return;
++
++ if (bfqq == bfqd->in_service_queue)
++ /*
++ * In order not to break guarantees, budgets cannot be
++ * changed after an entity has been selected.
++ */
++ return;
++
++ BUG_ON(entity->tree != &st->active);
++ BUG_ON(entity == entity->sched_data->in_service_entity);
++
++ new_budget = max_t(unsigned long, bfqq->max_budget,
++ bfq_serv_to_charge(next_rq, bfqq));
++ if (entity->budget != new_budget) {
++ entity->budget = new_budget;
++ bfq_log_bfqq(bfqd, bfqq, "updated next rq: new budget %lu",
++ new_budget);
++ bfq_activate_bfqq(bfqd, bfqq);
++ }
++}
++
++static inline unsigned int bfq_wr_duration(struct bfq_data *bfqd)
++{
++ u64 dur;
++
++ if (bfqd->bfq_wr_max_time > 0)
++ return bfqd->bfq_wr_max_time;
++
++ dur = bfqd->RT_prod;
++ do_div(dur, bfqd->peak_rate);
++
++ return dur;
++}
++
++/* Empty burst list and add just bfqq (see comments to bfq_handle_burst) */
++static inline void bfq_reset_burst_list(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ struct bfq_queue *item;
++ struct hlist_node *n;
++
++ hlist_for_each_entry_safe(item, n, &bfqd->burst_list, burst_list_node)
++ hlist_del_init(&item->burst_list_node);
++ hlist_add_head(&bfqq->burst_list_node, &bfqd->burst_list);
++ bfqd->burst_size = 1;
++}
++
++/* Add bfqq to the list of queues in current burst (see bfq_handle_burst) */
++static void bfq_add_to_burst(struct bfq_data *bfqd, struct bfq_queue *bfqq)
++{
++ /* Increment burst size to take into account also bfqq */
++ bfqd->burst_size++;
++
++ if (bfqd->burst_size == bfqd->bfq_large_burst_thresh) {
++ struct bfq_queue *pos, *bfqq_item;
++ struct hlist_node *n;
++
++ /*
++ * Enough queues have been activated shortly after each
++ * other to consider this burst as large.
++ */
++ bfqd->large_burst = true;
++
++ /*
++ * We can now mark all queues in the burst list as
++ * belonging to a large burst.
++ */
++ hlist_for_each_entry(bfqq_item, &bfqd->burst_list,
++ burst_list_node)
++ bfq_mark_bfqq_in_large_burst(bfqq_item);
++ bfq_mark_bfqq_in_large_burst(bfqq);
++
++ /*
++ * From now on, and until the current burst finishes, any
++ * new queue being activated shortly after the last queue
++ * was inserted in the burst can be immediately marked as
++ * belonging to a large burst. So the burst list is not
++ * needed any more. Remove it.
++ */
++ hlist_for_each_entry_safe(pos, n, &bfqd->burst_list,
++ burst_list_node)
++ hlist_del_init(&pos->burst_list_node);
++ } else /* burst not yet large: add bfqq to the burst list */
++ hlist_add_head(&bfqq->burst_list_node, &bfqd->burst_list);
++}
++
++/*
++ * If many queues happen to become active shortly after each other, then,
++ * to help the processes associated to these queues get their job done as
++ * soon as possible, it is usually better to not grant either weight-raising
++ * or device idling to these queues. In this comment we describe, firstly,
++ * the reasons why this fact holds, and, secondly, the next function, which
++ * implements the main steps needed to properly mark these queues so that
++ * they can then be treated in a different way.
++ *
++ * As for the terminology, we say that a queue becomes active, i.e.,
++ * switches from idle to backlogged, either when it is created (as a
++ * consequence of the arrival of an I/O request), or, if already existing,
++ * when a new request for the queue arrives while the queue is idle.
++ * Bursts of activations, i.e., activations of different queues occurring
++ * shortly after each other, are typically caused by services or applications
++ * that spawn or reactivate many parallel threads/processes. Examples are
++ * systemd during boot or git grep.
++ *
++ * These services or applications benefit mostly from a high throughput:
++ * the quicker the requests of the activated queues are cumulatively served,
++ * the sooner the target job of these queues gets completed. As a consequence,
++ * weight-raising any of these queues, which also implies idling the device
++ * for it, is almost always counterproductive: in most cases it just lowers
++ * throughput.
++ *
++ * On the other hand, a burst of activations may be also caused by the start
++ * of an application that does not consist in a lot of parallel I/O-bound
++ * threads. In fact, with a complex application, the burst may be just a
++ * consequence of the fact that several processes need to be executed to
++ * start-up the application. To start an application as quickly as possible,
++ * the best thing to do is to privilege the I/O related to the application
++ * with respect to all other I/O. Therefore, the best strategy to start as
++ * quickly as possible an application that causes a burst of activations is
++ * to weight-raise all the queues activated during the burst. This is the
++ * exact opposite of the best strategy for the other type of bursts.
++ *
++ * In the end, to take the best action for each of the two cases, the two
++ * types of bursts need to be distinguished. Fortunately, this seems
++ * relatively easy to do, by looking at the sizes of the bursts. In
++ * particular, we found a threshold such that bursts with a larger size
++ * than that threshold are apparently caused only by services or commands
++ * such as systemd or git grep. For brevity, hereafter we call just 'large'
++ * these bursts. BFQ *does not* weight-raise queues whose activations occur
++ * in a large burst. In addition, for each of these queues BFQ performs or
++ * does not perform idling depending on which choice boosts the throughput
++ * most. The exact choice depends on the device and request pattern at
++ * hand.
++ *
++ * Turning back to the next function, it implements all the steps needed
++ * to detect the occurrence of a large burst and to properly mark all the
++ * queues belonging to it (so that they can then be treated in a different
++ * way). This goal is achieved by maintaining a special "burst list" that
++ * holds, temporarily, the queues that belong to the burst in progress. The
++ * list is then used to mark these queues as belonging to a large burst if
++ * the burst does become large. The main steps are the following.
++ *
++ * . when the very first queue is activated, the queue is inserted into the
++ * list (as it could be the first queue in a possible burst)
++ *
++ * . if the current burst has not yet become large, and a queue Q that does
++ * not yet belong to the burst is activated shortly after the last time
++ * at which a new queue entered the burst list, then the function appends
++ * Q to the burst list
++ *
++ * . if, as a consequence of the previous step, the burst size reaches
++ * the large-burst threshold, then
++ *
++ * . all the queues in the burst list are marked as belonging to a
++ * large burst
++ *
++ * . the burst list is deleted; in fact, the burst list already served
++ * its purpose (keeping temporarily track of the queues in a burst,
++ * so as to be able to mark them as belonging to a large burst in the
++ * previous sub-step), and now is not needed any more
++ *
++ * . the device enters a large-burst mode
++ *
++ * . if a queue Q that does not belong to the burst is activated while
++ * the device is in large-burst mode and shortly after the last time
++ * at which a queue either entered the burst list or was marked as
++ * belonging to the current large burst, then Q is immediately marked
++ * as belonging to a large burst.
++ *
++ * . if a queue Q that does not belong to the burst is activated a while
++ * later, i.e., not shortly after, than the last time at which a queue
++ * either entered the burst list or was marked as belonging to the
++ * current large burst, then the current burst is deemed as finished and:
++ *
++ * . the large-burst mode is reset if set
++ *
++ * . the burst list is emptied
++ *
++ * . Q is inserted in the burst list, as Q may be the first queue
++ * in a possible new burst (then the burst list contains just Q
++ * after this step).
++ */
++static void bfq_handle_burst(struct bfq_data *bfqd, struct bfq_queue *bfqq,
++ bool idle_for_long_time)
++{
++ /*
++ * If bfqq happened to be activated in a burst, but has been idle
++ * for at least as long as an interactive queue, then we assume
++ * that, in the overall I/O initiated in the burst, the I/O
++ * associated to bfqq is finished. So bfqq does not need to be
++ * treated as a queue belonging to a burst anymore. Accordingly,
++ * we reset bfqq's in_large_burst flag if set, and remove bfqq
++ * from the burst list if it's there. We do not decrement instead
++ * burst_size, because the fact that bfqq does not need to belong
++ * to the burst list any more does not invalidate the fact that
++ * bfqq may have been activated during the current burst.
++ */
++ if (idle_for_long_time) {
++ hlist_del_init(&bfqq->burst_list_node);
++ bfq_clear_bfqq_in_large_burst(bfqq);
++ }
++
++ /*
++ * If bfqq is already in the burst list or is part of a large
++ * burst, then there is nothing else to do.
++ */
++ if (!hlist_unhashed(&bfqq->burst_list_node) ||
++ bfq_bfqq_in_large_burst(bfqq))
++ return;
++
++ /*
++ * If bfqq's activation happens late enough, then the current
++ * burst is finished, and related data structures must be reset.
++ *
++ * In this respect, consider the special case where bfqq is the very
++ * first queue being activated. In this case, last_ins_in_burst is
++ * not yet significant when we get here. But it is easy to verify
++ * that, whether or not the following condition is true, bfqq will
++ * end up being inserted into the burst list. In particular the
++ * list will happen to contain only bfqq. And this is exactly what
++ * has to happen, as bfqq may be the first queue in a possible
++ * burst.
++ */
++ if (time_is_before_jiffies(bfqd->last_ins_in_burst +
++ bfqd->bfq_burst_interval)) {
++ bfqd->large_burst = false;
++ bfq_reset_burst_list(bfqd, bfqq);
++ return;
++ }
++
++ /*
++ * If we get here, then bfqq is being activated shortly after the
++ * last queue. So, if the current burst is also large, we can mark
++ * bfqq as belonging to this large burst immediately.
++ */
++ if (bfqd->large_burst) {
++ bfq_mark_bfqq_in_large_burst(bfqq);
++ return;
++ }
++
++ /*
++ * If we get here, then a large-burst state has not yet been
++ * reached, but bfqq is being activated shortly after the last
++ * queue. Then we add bfqq to the burst.
++ */
++ bfq_add_to_burst(bfqd, bfqq);
++}
++
++static void bfq_add_request(struct request *rq)
++{
++ struct bfq_queue *bfqq = RQ_BFQQ(rq);
++ struct bfq_entity *entity = &bfqq->entity;
++ struct bfq_data *bfqd = bfqq->bfqd;
++ struct request *next_rq, *prev;
++ unsigned long old_wr_coeff = bfqq->wr_coeff;
++ bool interactive = false;
++
++ bfq_log_bfqq(bfqd, bfqq, "add_request %d", rq_is_sync(rq));
++ bfqq->queued[rq_is_sync(rq)]++;
++ bfqd->queued++;
++
++ elv_rb_add(&bfqq->sort_list, rq);
++
++ /*
++ * Check if this request is a better next-serve candidate.
++ */
++ prev = bfqq->next_rq;
++ next_rq = bfq_choose_req(bfqd, bfqq->next_rq, rq, bfqd->last_position);
++ BUG_ON(next_rq == NULL);
++ bfqq->next_rq = next_rq;
++
++ /*
++ * Adjust priority tree position, if next_rq changes.
++ */
++ if (prev != bfqq->next_rq)
++ bfq_rq_pos_tree_add(bfqd, bfqq);
++
++ if (!bfq_bfqq_busy(bfqq)) {
++ bool soft_rt,
++ idle_for_long_time = time_is_before_jiffies(
++ bfqq->budget_timeout +
++ bfqd->bfq_wr_min_idle_time);
++
++ if (bfq_bfqq_sync(bfqq)) {
++ bool already_in_burst =
++ !hlist_unhashed(&bfqq->burst_list_node) ||
++ bfq_bfqq_in_large_burst(bfqq);
++ bfq_handle_burst(bfqd, bfqq, idle_for_long_time);
++ /*
++ * If bfqq was not already in the current burst,
++ * then, at this point, bfqq either has been
++ * added to the current burst or has caused the
++ * current burst to terminate. In particular, in
++ * the second case, bfqq has become the first
++ * queue in a possible new burst.
++ * In both cases last_ins_in_burst needs to be
++ * moved forward.
++ */
++ if (!already_in_burst)
++ bfqd->last_ins_in_burst = jiffies;
++ }
++
++ soft_rt = bfqd->bfq_wr_max_softrt_rate > 0 &&
++ !bfq_bfqq_in_large_burst(bfqq) &&
++ time_is_before_jiffies(bfqq->soft_rt_next_start);
++ interactive = !bfq_bfqq_in_large_burst(bfqq) &&
++ idle_for_long_time;
++ entity->budget = max_t(unsigned long, bfqq->max_budget,
++ bfq_serv_to_charge(next_rq, bfqq));
++
++ if (!bfq_bfqq_IO_bound(bfqq)) {
++ if (time_before(jiffies,
++ RQ_BIC(rq)->ttime.last_end_request +
++ bfqd->bfq_slice_idle)) {
++ bfqq->requests_within_timer++;
++ if (bfqq->requests_within_timer >=
++ bfqd->bfq_requests_within_timer)
++ bfq_mark_bfqq_IO_bound(bfqq);
++ } else
++ bfqq->requests_within_timer = 0;
++ }
++
++ if (!bfqd->low_latency)
++ goto add_bfqq_busy;
++
++ /*
++ * If the queue is not being boosted and has been idle
++ * for enough time, start a weight-raising period
++ */
++ if (old_wr_coeff == 1 && (interactive || soft_rt)) {
++ bfqq->wr_coeff = bfqd->bfq_wr_coeff;
++ if (interactive)
++ bfqq->wr_cur_max_time = bfq_wr_duration(bfqd);
++ else
++ bfqq->wr_cur_max_time =
++ bfqd->bfq_wr_rt_max_time;
++ bfq_log_bfqq(bfqd, bfqq,
++ "wrais starting at %lu, rais_max_time %u",
++ jiffies,
++ jiffies_to_msecs(bfqq->wr_cur_max_time));
++ } else if (old_wr_coeff > 1) {
++ if (interactive)
++ bfqq->wr_cur_max_time = bfq_wr_duration(bfqd);
++ else if (bfq_bfqq_in_large_burst(bfqq) ||
++ (bfqq->wr_cur_max_time ==
++ bfqd->bfq_wr_rt_max_time &&
++ !soft_rt)) {
++ bfqq->wr_coeff = 1;
++ bfq_log_bfqq(bfqd, bfqq,
++ "wrais ending at %lu, rais_max_time %u",
++ jiffies,
++ jiffies_to_msecs(bfqq->
++ wr_cur_max_time));
++ } else if (time_before(
++ bfqq->last_wr_start_finish +
++ bfqq->wr_cur_max_time,
++ jiffies +
++ bfqd->bfq_wr_rt_max_time) &&
++ soft_rt) {
++ /*
++ *
++ * The remaining weight-raising time is lower
++ * than bfqd->bfq_wr_rt_max_time, which
++ * means that the application is enjoying
++ * weight raising either because deemed soft-
++ * rt in the near past, or because deemed
++ * interactive a long ago. In both cases,
++ * resetting now the current remaining weight-
++ * raising time for the application to the
++ * weight-raising duration for soft rt
++ * applications would not cause any latency
++ * increase for the application (as the new
++ * duration would be higher than the remaining
++ * time).
++ *
++ * In addition, the application is now meeting
++ * the requirements for being deemed soft rt.
++ * In the end we can correctly and safely
++ * (re)charge the weight-raising duration for
++ * the application with the weight-raising
++ * duration for soft rt applications.
++ *
++ * In particular, doing this recharge now, i.e.,
++ * before the weight-raising period for the
++ * application finishes, reduces the probability
++ * of the following negative scenario:
++ * 1) the weight of a soft rt application is
++ * raised at startup (as for any newly
++ * created application),
++ * 2) since the application is not interactive,
++ * at a certain time weight-raising is
++ * stopped for the application,
++ * 3) at that time the application happens to
++ * still have pending requests, and hence
++ * is destined to not have a chance to be
++ * deemed soft rt before these requests are
++ * completed (see the comments to the
++ * function bfq_bfqq_softrt_next_start()
++ * for details on soft rt detection),
++ * 4) these pending requests experience a high
++ * latency because the application is not
++ * weight-raised while they are pending.
++ */
++ bfqq->last_wr_start_finish = jiffies;
++ bfqq->wr_cur_max_time =
++ bfqd->bfq_wr_rt_max_time;
++ }
++ }
++ if (old_wr_coeff != bfqq->wr_coeff)
++ entity->ioprio_changed = 1;
++add_bfqq_busy:
++ bfqq->last_idle_bklogged = jiffies;
++ bfqq->service_from_backlogged = 0;
++ bfq_clear_bfqq_softrt_update(bfqq);
++ bfq_add_bfqq_busy(bfqd, bfqq);
++ } else {
++ if (bfqd->low_latency && old_wr_coeff == 1 && !rq_is_sync(rq) &&
++ time_is_before_jiffies(
++ bfqq->last_wr_start_finish +
++ bfqd->bfq_wr_min_inter_arr_async)) {
++ bfqq->wr_coeff = bfqd->bfq_wr_coeff;
++ bfqq->wr_cur_max_time = bfq_wr_duration(bfqd);
++
++ bfqd->wr_busy_queues++;
++ entity->ioprio_changed = 1;
++ bfq_log_bfqq(bfqd, bfqq,
++ "non-idle wrais starting at %lu, rais_max_time %u",
++ jiffies,
++ jiffies_to_msecs(bfqq->wr_cur_max_time));
++ }
++ if (prev != bfqq->next_rq)
++ bfq_updated_next_req(bfqd, bfqq);
++ }
++
++ if (bfqd->low_latency &&
++ (old_wr_coeff == 1 || bfqq->wr_coeff == 1 || interactive))
++ bfqq->last_wr_start_finish = jiffies;
++}
++
++static struct request *bfq_find_rq_fmerge(struct bfq_data *bfqd,
++ struct bio *bio)
++{
++ struct task_struct *tsk = current;
++ struct bfq_io_cq *bic;
++ struct bfq_queue *bfqq;
++
++ bic = bfq_bic_lookup(bfqd, tsk->io_context);
++ if (bic == NULL)
++ return NULL;
++
++ bfqq = bic_to_bfqq(bic, bfq_bio_sync(bio));
++ if (bfqq != NULL)
++ return elv_rb_find(&bfqq->sort_list, bio_end_sector(bio));
++
++ return NULL;
++}
++
++static void bfq_activate_request(struct request_queue *q, struct request *rq)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++
++ bfqd->rq_in_driver++;
++ bfqd->last_position = blk_rq_pos(rq) + blk_rq_sectors(rq);
++ bfq_log(bfqd, "activate_request: new bfqd->last_position %llu",
++ (long long unsigned)bfqd->last_position);
++}
++
++static inline void bfq_deactivate_request(struct request_queue *q,
++ struct request *rq)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++
++ BUG_ON(bfqd->rq_in_driver == 0);
++ bfqd->rq_in_driver--;
++}
++
++static void bfq_remove_request(struct request *rq)
++{
++ struct bfq_queue *bfqq = RQ_BFQQ(rq);
++ struct bfq_data *bfqd = bfqq->bfqd;
++ const int sync = rq_is_sync(rq);
++
++ if (bfqq->next_rq == rq) {
++ bfqq->next_rq = bfq_find_next_rq(bfqd, bfqq, rq);
++ bfq_updated_next_req(bfqd, bfqq);
++ }
++
++ if (rq->queuelist.prev != &rq->queuelist)
++ list_del_init(&rq->queuelist);
++ BUG_ON(bfqq->queued[sync] == 0);
++ bfqq->queued[sync]--;
++ bfqd->queued--;
++ elv_rb_del(&bfqq->sort_list, rq);
++
++ if (RB_EMPTY_ROOT(&bfqq->sort_list)) {
++ if (bfq_bfqq_busy(bfqq) && bfqq != bfqd->in_service_queue)
++ bfq_del_bfqq_busy(bfqd, bfqq, 1);
++ /*
++ * Remove queue from request-position tree as it is empty.
++ */
++ if (bfqq->pos_root != NULL) {
++ rb_erase(&bfqq->pos_node, bfqq->pos_root);
++ bfqq->pos_root = NULL;
++ }
++ }
++
++ if (rq->cmd_flags & REQ_META) {
++ BUG_ON(bfqq->meta_pending == 0);
++ bfqq->meta_pending--;
++ }
++}
++
++static int bfq_merge(struct request_queue *q, struct request **req,
++ struct bio *bio)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++ struct request *__rq;
++
++ __rq = bfq_find_rq_fmerge(bfqd, bio);
++ if (__rq != NULL && elv_rq_merge_ok(__rq, bio)) {
++ *req = __rq;
++ return ELEVATOR_FRONT_MERGE;
++ }
++
++ return ELEVATOR_NO_MERGE;
++}
++
++static void bfq_merged_request(struct request_queue *q, struct request *req,
++ int type)
++{
++ if (type == ELEVATOR_FRONT_MERGE &&
++ rb_prev(&req->rb_node) &&
++ blk_rq_pos(req) <
++ blk_rq_pos(container_of(rb_prev(&req->rb_node),
++ struct request, rb_node))) {
++ struct bfq_queue *bfqq = RQ_BFQQ(req);
++ struct bfq_data *bfqd = bfqq->bfqd;
++ struct request *prev, *next_rq;
++
++ /* Reposition request in its sort_list */
++ elv_rb_del(&bfqq->sort_list, req);
++ elv_rb_add(&bfqq->sort_list, req);
++ /* Choose next request to be served for bfqq */
++ prev = bfqq->next_rq;
++ next_rq = bfq_choose_req(bfqd, bfqq->next_rq, req,
++ bfqd->last_position);
++ BUG_ON(next_rq == NULL);
++ bfqq->next_rq = next_rq;
++ /*
++ * If next_rq changes, update both the queue's budget to
++ * fit the new request and the queue's position in its
++ * rq_pos_tree.
++ */
++ if (prev != bfqq->next_rq) {
++ bfq_updated_next_req(bfqd, bfqq);
++ bfq_rq_pos_tree_add(bfqd, bfqq);
++ }
++ }
++}
++
++static void bfq_merged_requests(struct request_queue *q, struct request *rq,
++ struct request *next)
++{
++ struct bfq_queue *bfqq = RQ_BFQQ(rq), *next_bfqq = RQ_BFQQ(next);
++
++ /*
++ * If next and rq belong to the same bfq_queue and next is older
++ * than rq, then reposition rq in the fifo (by substituting next
++ * with rq). Otherwise, if next and rq belong to different
++ * bfq_queues, never reposition rq: in fact, we would have to
++ * reposition it with respect to next's position in its own fifo,
++ * which would most certainly be too expensive with respect to
++ * the benefits.
++ */
++ if (bfqq == next_bfqq &&
++ !list_empty(&rq->queuelist) && !list_empty(&next->queuelist) &&
++ time_before(next->fifo_time, rq->fifo_time)) {
++ list_del_init(&rq->queuelist);
++ list_replace_init(&next->queuelist, &rq->queuelist);
++ rq->fifo_time = next->fifo_time;
++ }
++
++ if (bfqq->next_rq == next)
++ bfqq->next_rq = rq;
++
++ bfq_remove_request(next);
++}
++
++/* Must be called with bfqq != NULL */
++static inline void bfq_bfqq_end_wr(struct bfq_queue *bfqq)
++{
++ BUG_ON(bfqq == NULL);
++ if (bfq_bfqq_busy(bfqq))
++ bfqq->bfqd->wr_busy_queues--;
++ bfqq->wr_coeff = 1;
++ bfqq->wr_cur_max_time = 0;
++ /* Trigger a weight change on the next activation of the queue */
++ bfqq->entity.ioprio_changed = 1;
++}
++
++static void bfq_end_wr_async_queues(struct bfq_data *bfqd,
++ struct bfq_group *bfqg)
++{
++ int i, j;
++
++ for (i = 0; i < 2; i++)
++ for (j = 0; j < IOPRIO_BE_NR; j++)
++ if (bfqg->async_bfqq[i][j] != NULL)
++ bfq_bfqq_end_wr(bfqg->async_bfqq[i][j]);
++ if (bfqg->async_idle_bfqq != NULL)
++ bfq_bfqq_end_wr(bfqg->async_idle_bfqq);
++}
++
++static void bfq_end_wr(struct bfq_data *bfqd)
++{
++ struct bfq_queue *bfqq;
++
++ spin_lock_irq(bfqd->queue->queue_lock);
++
++ list_for_each_entry(bfqq, &bfqd->active_list, bfqq_list)
++ bfq_bfqq_end_wr(bfqq);
++ list_for_each_entry(bfqq, &bfqd->idle_list, bfqq_list)
++ bfq_bfqq_end_wr(bfqq);
++ bfq_end_wr_async(bfqd);
++
++ spin_unlock_irq(bfqd->queue->queue_lock);
++}
++
++static int bfq_allow_merge(struct request_queue *q, struct request *rq,
++ struct bio *bio)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++ struct bfq_io_cq *bic;
++ struct bfq_queue *bfqq;
++
++ /*
++ * Disallow merge of a sync bio into an async request.
++ */
++ if (bfq_bio_sync(bio) && !rq_is_sync(rq))
++ return 0;
++
++ /*
++ * Lookup the bfqq that this bio will be queued with. Allow
++ * merge only if rq is queued there.
++ * Queue lock is held here.
++ */
++ bic = bfq_bic_lookup(bfqd, current->io_context);
++ if (bic == NULL)
++ return 0;
++
++ bfqq = bic_to_bfqq(bic, bfq_bio_sync(bio));
++ return bfqq == RQ_BFQQ(rq);
++}
++
++static void __bfq_set_in_service_queue(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ if (bfqq != NULL) {
++ bfq_mark_bfqq_must_alloc(bfqq);
++ bfq_mark_bfqq_budget_new(bfqq);
++ bfq_clear_bfqq_fifo_expire(bfqq);
++
++ bfqd->budgets_assigned = (bfqd->budgets_assigned*7 + 256) / 8;
++
++ bfq_log_bfqq(bfqd, bfqq,
++ "set_in_service_queue, cur-budget = %lu",
++ bfqq->entity.budget);
++ }
++
++ bfqd->in_service_queue = bfqq;
++}
++
++/*
++ * Get and set a new queue for service.
++ */
++static struct bfq_queue *bfq_set_in_service_queue(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ if (!bfqq)
++ bfqq = bfq_get_next_queue(bfqd);
++ else
++ bfq_get_next_queue_forced(bfqd, bfqq);
++
++ __bfq_set_in_service_queue(bfqd, bfqq);
++ return bfqq;
++}
++
++static inline sector_t bfq_dist_from_last(struct bfq_data *bfqd,
++ struct request *rq)
++{
++ if (blk_rq_pos(rq) >= bfqd->last_position)
++ return blk_rq_pos(rq) - bfqd->last_position;
++ else
++ return bfqd->last_position - blk_rq_pos(rq);
++}
++
++/*
++ * Return true if bfqq has no request pending and rq is close enough to
++ * bfqd->last_position, or if rq is closer to bfqd->last_position than
++ * bfqq->next_rq
++ */
++static inline int bfq_rq_close(struct bfq_data *bfqd, struct request *rq)
++{
++ return bfq_dist_from_last(bfqd, rq) <= BFQQ_SEEK_THR;
++}
++
++static struct bfq_queue *bfqq_close(struct bfq_data *bfqd)
++{
++ struct rb_root *root = &bfqd->rq_pos_tree;
++ struct rb_node *parent, *node;
++ struct bfq_queue *__bfqq;
++ sector_t sector = bfqd->last_position;
++
++ if (RB_EMPTY_ROOT(root))
++ return NULL;
++
++ /*
++ * First, if we find a request starting at the end of the last
++ * request, choose it.
++ */
++ __bfqq = bfq_rq_pos_tree_lookup(bfqd, root, sector, &parent, NULL);
++ if (__bfqq != NULL)
++ return __bfqq;
++
++ /*
++ * If the exact sector wasn't found, the parent of the NULL leaf
++ * will contain the closest sector (rq_pos_tree sorted by
++ * next_request position).
++ */
++ __bfqq = rb_entry(parent, struct bfq_queue, pos_node);
++ if (bfq_rq_close(bfqd, __bfqq->next_rq))
++ return __bfqq;
++
++ if (blk_rq_pos(__bfqq->next_rq) < sector)
++ node = rb_next(&__bfqq->pos_node);
++ else
++ node = rb_prev(&__bfqq->pos_node);
++ if (node == NULL)
++ return NULL;
++
++ __bfqq = rb_entry(node, struct bfq_queue, pos_node);
++ if (bfq_rq_close(bfqd, __bfqq->next_rq))
++ return __bfqq;
++
++ return NULL;
++}
++
++/*
++ * bfqd - obvious
++ * cur_bfqq - passed in so that we don't decide that the current queue
++ * is closely cooperating with itself.
++ *
++ * We are assuming that cur_bfqq has dispatched at least one request,
++ * and that bfqd->last_position reflects a position on the disk associated
++ * with the I/O issued by cur_bfqq.
++ */
++static struct bfq_queue *bfq_close_cooperator(struct bfq_data *bfqd,
++ struct bfq_queue *cur_bfqq)
++{
++ struct bfq_queue *bfqq;
++
++ if (bfq_class_idle(cur_bfqq))
++ return NULL;
++ if (!bfq_bfqq_sync(cur_bfqq))
++ return NULL;
++ if (BFQQ_SEEKY(cur_bfqq))
++ return NULL;
++
++ /* If device has only one backlogged bfq_queue, don't search. */
++ if (bfqd->busy_queues == 1)
++ return NULL;
++
++ /*
++ * We should notice if some of the queues are cooperating, e.g.
++ * working closely on the same area of the disk. In that case,
++ * we can group them together and don't waste time idling.
++ */
++ bfqq = bfqq_close(bfqd);
++ if (bfqq == NULL || bfqq == cur_bfqq)
++ return NULL;
++
++ /*
++ * Do not merge queues from different bfq_groups.
++ */
++ if (bfqq->entity.parent != cur_bfqq->entity.parent)
++ return NULL;
++
++ /*
++ * It only makes sense to merge sync queues.
++ */
++ if (!bfq_bfqq_sync(bfqq))
++ return NULL;
++ if (BFQQ_SEEKY(bfqq))
++ return NULL;
++
++ /*
++ * Do not merge queues of different priority classes.
++ */
++ if (bfq_class_rt(bfqq) != bfq_class_rt(cur_bfqq))
++ return NULL;
++
++ return bfqq;
++}
++
++/*
++ * If enough samples have been computed, return the current max budget
++ * stored in bfqd, which is dynamically updated according to the
++ * estimated disk peak rate; otherwise return the default max budget
++ */
++static inline unsigned long bfq_max_budget(struct bfq_data *bfqd)
++{
++ if (bfqd->budgets_assigned < 194)
++ return bfq_default_max_budget;
++ else
++ return bfqd->bfq_max_budget;
++}
++
++/*
++ * Return min budget, which is a fraction of the current or default
++ * max budget (trying with 1/32)
++ */
++static inline unsigned long bfq_min_budget(struct bfq_data *bfqd)
++{
++ if (bfqd->budgets_assigned < 194)
++ return bfq_default_max_budget / 32;
++ else
++ return bfqd->bfq_max_budget / 32;
++}
++
++static void bfq_arm_slice_timer(struct bfq_data *bfqd)
++{
++ struct bfq_queue *bfqq = bfqd->in_service_queue;
++ struct bfq_io_cq *bic;
++ unsigned long sl;
++
++ BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list));
++
++ /* Processes have exited, don't wait. */
++ bic = bfqd->in_service_bic;
++ if (bic == NULL || atomic_read(&bic->icq.ioc->active_ref) == 0)
++ return;
++
++ bfq_mark_bfqq_wait_request(bfqq);
++
++ /*
++ * We don't want to idle for seeks, but we do want to allow
++ * fair distribution of slice time for a process doing back-to-back
++ * seeks. So allow a little bit of time for him to submit a new rq.
++ *
++ * To prevent processes with (partly) seeky workloads from
++ * being too ill-treated, grant them a small fraction of the
++ * assigned budget before reducing the waiting time to
++ * BFQ_MIN_TT. This happened to help reduce latency.
++ */
++ sl = bfqd->bfq_slice_idle;
++ /*
++ * Unless the queue is being weight-raised or the scenario is
++ * asymmetric, grant only minimum idle time if the queue either
++ * has been seeky for long enough or has already proved to be
++ * constantly seeky.
++ */
++ if (bfq_sample_valid(bfqq->seek_samples) &&
++ ((BFQQ_SEEKY(bfqq) && bfqq->entity.service >
++ bfq_max_budget(bfqq->bfqd) / 8) ||
++ bfq_bfqq_constantly_seeky(bfqq)) && bfqq->wr_coeff == 1 &&
++ symmetric_scenario)
++ sl = min(sl, msecs_to_jiffies(BFQ_MIN_TT));
++ else if (bfqq->wr_coeff > 1)
++ sl = sl * 3;
++ bfqd->last_idling_start = ktime_get();
++ mod_timer(&bfqd->idle_slice_timer, jiffies + sl);
++ bfq_log(bfqd, "arm idle: %u/%u ms",
++ jiffies_to_msecs(sl), jiffies_to_msecs(bfqd->bfq_slice_idle));
++}
++
++/*
++ * Set the maximum time for the in-service queue to consume its
++ * budget. This prevents seeky processes from lowering the disk
++ * throughput (always guaranteed with a time slice scheme as in CFQ).
++ */
++static void bfq_set_budget_timeout(struct bfq_data *bfqd)
++{
++ struct bfq_queue *bfqq = bfqd->in_service_queue;
++ unsigned int timeout_coeff;
++ if (bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time)
++ timeout_coeff = 1;
++ else
++ timeout_coeff = bfqq->entity.weight / bfqq->entity.orig_weight;
++
++ bfqd->last_budget_start = ktime_get();
++
++ bfq_clear_bfqq_budget_new(bfqq);
++ bfqq->budget_timeout = jiffies +
++ bfqd->bfq_timeout[bfq_bfqq_sync(bfqq)] * timeout_coeff;
++
++ bfq_log_bfqq(bfqd, bfqq, "set budget_timeout %u",
++ jiffies_to_msecs(bfqd->bfq_timeout[bfq_bfqq_sync(bfqq)] *
++ timeout_coeff));
++}
++
++/*
++ * Move request from internal lists to the request queue dispatch list.
++ */
++static void bfq_dispatch_insert(struct request_queue *q, struct request *rq)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++ struct bfq_queue *bfqq = RQ_BFQQ(rq);
++
++ /*
++ * For consistency, the next instruction should have been executed
++ * after removing the request from the queue and dispatching it.
++ * We execute instead this instruction before bfq_remove_request()
++ * (and hence introduce a temporary inconsistency), for efficiency.
++ * In fact, in a forced_dispatch, this prevents two counters related
++ * to bfqq->dispatched to risk to be uselessly decremented if bfqq
++ * is not in service, and then to be incremented again after
++ * incrementing bfqq->dispatched.
++ */
++ bfqq->dispatched++;
++ bfq_remove_request(rq);
++ elv_dispatch_sort(q, rq);
++
++ if (bfq_bfqq_sync(bfqq))
++ bfqd->sync_flight++;
++}
++
++/*
++ * Return expired entry, or NULL to just start from scratch in rbtree.
++ */
++static struct request *bfq_check_fifo(struct bfq_queue *bfqq)
++{
++ struct request *rq = NULL;
++
++ if (bfq_bfqq_fifo_expire(bfqq))
++ return NULL;
++
++ bfq_mark_bfqq_fifo_expire(bfqq);
++
++ if (list_empty(&bfqq->fifo))
++ return NULL;
++
++ rq = rq_entry_fifo(bfqq->fifo.next);
++
++ if (time_before(jiffies, rq->fifo_time))
++ return NULL;
++
++ return rq;
++}
++
++/* Must be called with the queue_lock held. */
++static int bfqq_process_refs(struct bfq_queue *bfqq)
++{
++ int process_refs, io_refs;
++
++ io_refs = bfqq->allocated[READ] + bfqq->allocated[WRITE];
++ process_refs = atomic_read(&bfqq->ref) - io_refs - bfqq->entity.on_st;
++ BUG_ON(process_refs < 0);
++ return process_refs;
++}
++
++static void bfq_setup_merge(struct bfq_queue *bfqq, struct bfq_queue *new_bfqq)
++{
++ int process_refs, new_process_refs;
++ struct bfq_queue *__bfqq;
++
++ /*
++ * If there are no process references on the new_bfqq, then it is
++ * unsafe to follow the ->new_bfqq chain as other bfqq's in the chain
++ * may have dropped their last reference (not just their last process
++ * reference).
++ */
++ if (!bfqq_process_refs(new_bfqq))
++ return;
++
++ /* Avoid a circular list and skip interim queue merges. */
++ while ((__bfqq = new_bfqq->new_bfqq)) {
++ if (__bfqq == bfqq)
++ return;
++ new_bfqq = __bfqq;
++ }
++
++ process_refs = bfqq_process_refs(bfqq);
++ new_process_refs = bfqq_process_refs(new_bfqq);
++ /*
++ * If the process for the bfqq has gone away, there is no
++ * sense in merging the queues.
++ */
++ if (process_refs == 0 || new_process_refs == 0)
++ return;
++
++ /*
++ * Merge in the direction of the lesser amount of work.
++ */
++ if (new_process_refs >= process_refs) {
++ bfqq->new_bfqq = new_bfqq;
++ atomic_add(process_refs, &new_bfqq->ref);
++ } else {
++ new_bfqq->new_bfqq = bfqq;
++ atomic_add(new_process_refs, &bfqq->ref);
++ }
++ bfq_log_bfqq(bfqq->bfqd, bfqq, "scheduling merge with queue %d",
++ new_bfqq->pid);
++}
++
++static inline unsigned long bfq_bfqq_budget_left(struct bfq_queue *bfqq)
++{
++ struct bfq_entity *entity = &bfqq->entity;
++ return entity->budget - entity->service;
++}
++
++static void __bfq_bfqq_expire(struct bfq_data *bfqd, struct bfq_queue *bfqq)
++{
++ BUG_ON(bfqq != bfqd->in_service_queue);
++
++ __bfq_bfqd_reset_in_service(bfqd);
++
++ /*
++ * If this bfqq is shared between multiple processes, check
++ * to make sure that those processes are still issuing I/Os
++ * within the mean seek distance. If not, it may be time to
++ * break the queues apart again.
++ */
++ if (bfq_bfqq_coop(bfqq) && BFQQ_SEEKY(bfqq))
++ bfq_mark_bfqq_split_coop(bfqq);
++
++ if (RB_EMPTY_ROOT(&bfqq->sort_list)) {
++ /*
++ * Overloading budget_timeout field to store the time
++ * at which the queue remains with no backlog; used by
++ * the weight-raising mechanism.
++ */
++ bfqq->budget_timeout = jiffies;
++ bfq_del_bfqq_busy(bfqd, bfqq, 1);
++ } else {
++ bfq_activate_bfqq(bfqd, bfqq);
++ /*
++ * Resort priority tree of potential close cooperators.
++ */
++ bfq_rq_pos_tree_add(bfqd, bfqq);
++ }
++}
++
++/**
++ * __bfq_bfqq_recalc_budget - try to adapt the budget to the @bfqq behavior.
++ * @bfqd: device data.
++ * @bfqq: queue to update.
++ * @reason: reason for expiration.
++ *
++ * Handle the feedback on @bfqq budget. See the body for detailed
++ * comments.
++ */
++static void __bfq_bfqq_recalc_budget(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq,
++ enum bfqq_expiration reason)
++{
++ struct request *next_rq;
++ unsigned long budget, min_budget;
++
++ budget = bfqq->max_budget;
++ min_budget = bfq_min_budget(bfqd);
++
++ BUG_ON(bfqq != bfqd->in_service_queue);
++
++ bfq_log_bfqq(bfqd, bfqq, "recalc_budg: last budg %lu, budg left %lu",
++ bfqq->entity.budget, bfq_bfqq_budget_left(bfqq));
++ bfq_log_bfqq(bfqd, bfqq, "recalc_budg: last max_budg %lu, min budg %lu",
++ budget, bfq_min_budget(bfqd));
++ bfq_log_bfqq(bfqd, bfqq, "recalc_budg: sync %d, seeky %d",
++ bfq_bfqq_sync(bfqq), BFQQ_SEEKY(bfqd->in_service_queue));
++
++ if (bfq_bfqq_sync(bfqq)) {
++ switch (reason) {
++ /*
++ * Caveat: in all the following cases we trade latency
++ * for throughput.
++ */
++ case BFQ_BFQQ_TOO_IDLE:
++ /*
++ * This is the only case where we may reduce
++ * the budget: if there is no request of the
++ * process still waiting for completion, then
++ * we assume (tentatively) that the timer has
++ * expired because the batch of requests of
++ * the process could have been served with a
++ * smaller budget. Hence, betting that
++ * process will behave in the same way when it
++ * becomes backlogged again, we reduce its
++ * next budget. As long as we guess right,
++ * this budget cut reduces the latency
++ * experienced by the process.
++ *
++ * However, if there are still outstanding
++ * requests, then the process may have not yet
++ * issued its next request just because it is
++ * still waiting for the completion of some of
++ * the still outstanding ones. So in this
++ * subcase we do not reduce its budget, on the
++ * contrary we increase it to possibly boost
++ * the throughput, as discussed in the
++ * comments to the BUDGET_TIMEOUT case.
++ */
++ if (bfqq->dispatched > 0) /* still outstanding reqs */
++ budget = min(budget * 2, bfqd->bfq_max_budget);
++ else {
++ if (budget > 5 * min_budget)
++ budget -= 4 * min_budget;
++ else
++ budget = min_budget;
++ }
++ break;
++ case BFQ_BFQQ_BUDGET_TIMEOUT:
++ /*
++ * We double the budget here because: 1) it
++ * gives the chance to boost the throughput if
++ * this is not a seeky process (which may have
++ * bumped into this timeout because of, e.g.,
++ * ZBR), 2) together with charge_full_budget
++ * it helps give seeky processes higher
++ * timestamps, and hence be served less
++ * frequently.
++ */
++ budget = min(budget * 2, bfqd->bfq_max_budget);
++ break;
++ case BFQ_BFQQ_BUDGET_EXHAUSTED:
++ /*
++ * The process still has backlog, and did not
++ * let either the budget timeout or the disk
++ * idling timeout expire. Hence it is not
++ * seeky, has a short thinktime and may be
++ * happy with a higher budget too. So
++ * definitely increase the budget of this good
++ * candidate to boost the disk throughput.
++ */
++ budget = min(budget * 4, bfqd->bfq_max_budget);
++ break;
++ case BFQ_BFQQ_NO_MORE_REQUESTS:
++ /*
++ * Leave the budget unchanged.
++ */
++ default:
++ return;
++ }
++ } else /* async queue */
++ /* async queues get always the maximum possible budget
++ * (their ability to dispatch is limited by
++ * @bfqd->bfq_max_budget_async_rq).
++ */
++ budget = bfqd->bfq_max_budget;
++
++ bfqq->max_budget = budget;
++
++ if (bfqd->budgets_assigned >= 194 && bfqd->bfq_user_max_budget == 0 &&
++ bfqq->max_budget > bfqd->bfq_max_budget)
++ bfqq->max_budget = bfqd->bfq_max_budget;
++
++ /*
++ * Make sure that we have enough budget for the next request.
++ * Since the finish time of the bfqq must be kept in sync with
++ * the budget, be sure to call __bfq_bfqq_expire() after the
++ * update.
++ */
++ next_rq = bfqq->next_rq;
++ if (next_rq != NULL)
++ bfqq->entity.budget = max_t(unsigned long, bfqq->max_budget,
++ bfq_serv_to_charge(next_rq, bfqq));
++ else
++ bfqq->entity.budget = bfqq->max_budget;
++
++ bfq_log_bfqq(bfqd, bfqq, "head sect: %u, new budget %lu",
++ next_rq != NULL ? blk_rq_sectors(next_rq) : 0,
++ bfqq->entity.budget);
++}
++
++static unsigned long bfq_calc_max_budget(u64 peak_rate, u64 timeout)
++{
++ unsigned long max_budget;
++
++ /*
++ * The max_budget calculated when autotuning is equal to the
++ * amount of sectors transfered in timeout_sync at the
++ * estimated peak rate.
++ */
++ max_budget = (unsigned long)(peak_rate * 1000 *
++ timeout >> BFQ_RATE_SHIFT);
++
++ return max_budget;
++}
++
++/*
++ * In addition to updating the peak rate, checks whether the process
++ * is "slow", and returns 1 if so. This slow flag is used, in addition
++ * to the budget timeout, to reduce the amount of service provided to
++ * seeky processes, and hence reduce their chances to lower the
++ * throughput. See the code for more details.
++ */
++static int bfq_update_peak_rate(struct bfq_data *bfqd, struct bfq_queue *bfqq,
++ int compensate, enum bfqq_expiration reason)
++{
++ u64 bw, usecs, expected, timeout;
++ ktime_t delta;
++ int update = 0;
++
++ if (!bfq_bfqq_sync(bfqq) || bfq_bfqq_budget_new(bfqq))
++ return 0;
++
++ if (compensate)
++ delta = bfqd->last_idling_start;
++ else
++ delta = ktime_get();
++ delta = ktime_sub(delta, bfqd->last_budget_start);
++ usecs = ktime_to_us(delta);
++
++ /* Don't trust short/unrealistic values. */
++ if (usecs < 100 || usecs >= LONG_MAX)
++ return 0;
++
++ /*
++ * Calculate the bandwidth for the last slice. We use a 64 bit
++ * value to store the peak rate, in sectors per usec in fixed
++ * point math. We do so to have enough precision in the estimate
++ * and to avoid overflows.
++ */
++ bw = (u64)bfqq->entity.service << BFQ_RATE_SHIFT;
++ do_div(bw, (unsigned long)usecs);
++
++ timeout = jiffies_to_msecs(bfqd->bfq_timeout[BLK_RW_SYNC]);
++
++ /*
++ * Use only long (> 20ms) intervals to filter out spikes for
++ * the peak rate estimation.
++ */
++ if (usecs > 20000) {
++ if (bw > bfqd->peak_rate ||
++ (!BFQQ_SEEKY(bfqq) &&
++ reason == BFQ_BFQQ_BUDGET_TIMEOUT)) {
++ bfq_log(bfqd, "measured bw =%llu", bw);
++ /*
++ * To smooth oscillations use a low-pass filter with
++ * alpha=7/8, i.e.,
++ * new_rate = (7/8) * old_rate + (1/8) * bw
++ */
++ do_div(bw, 8);
++ if (bw == 0)
++ return 0;
++ bfqd->peak_rate *= 7;
++ do_div(bfqd->peak_rate, 8);
++ bfqd->peak_rate += bw;
++ update = 1;
++ bfq_log(bfqd, "new peak_rate=%llu", bfqd->peak_rate);
++ }
++
++ update |= bfqd->peak_rate_samples == BFQ_PEAK_RATE_SAMPLES - 1;
++
++ if (bfqd->peak_rate_samples < BFQ_PEAK_RATE_SAMPLES)
++ bfqd->peak_rate_samples++;
++
++ if (bfqd->peak_rate_samples == BFQ_PEAK_RATE_SAMPLES &&
++ update) {
++ int dev_type = blk_queue_nonrot(bfqd->queue);
++ if (bfqd->bfq_user_max_budget == 0) {
++ bfqd->bfq_max_budget =
++ bfq_calc_max_budget(bfqd->peak_rate,
++ timeout);
++ bfq_log(bfqd, "new max_budget=%lu",
++ bfqd->bfq_max_budget);
++ }
++ if (bfqd->device_speed == BFQ_BFQD_FAST &&
++ bfqd->peak_rate < device_speed_thresh[dev_type]) {
++ bfqd->device_speed = BFQ_BFQD_SLOW;
++ bfqd->RT_prod = R_slow[dev_type] *
++ T_slow[dev_type];
++ } else if (bfqd->device_speed == BFQ_BFQD_SLOW &&
++ bfqd->peak_rate > device_speed_thresh[dev_type]) {
++ bfqd->device_speed = BFQ_BFQD_FAST;
++ bfqd->RT_prod = R_fast[dev_type] *
++ T_fast[dev_type];
++ }
++ }
++ }
++
++ /*
++ * If the process has been served for a too short time
++ * interval to let its possible sequential accesses prevail on
++ * the initial seek time needed to move the disk head on the
++ * first sector it requested, then give the process a chance
++ * and for the moment return false.
++ */
++ if (bfqq->entity.budget <= bfq_max_budget(bfqd) / 8)
++ return 0;
++
++ /*
++ * A process is considered ``slow'' (i.e., seeky, so that we
++ * cannot treat it fairly in the service domain, as it would
++ * slow down too much the other processes) if, when a slice
++ * ends for whatever reason, it has received service at a
++ * rate that would not be high enough to complete the budget
++ * before the budget timeout expiration.
++ */
++ expected = bw * 1000 * timeout >> BFQ_RATE_SHIFT;
++
++ /*
++ * Caveat: processes doing IO in the slower disk zones will
++ * tend to be slow(er) even if not seeky. And the estimated
++ * peak rate will actually be an average over the disk
++ * surface. Hence, to not be too harsh with unlucky processes,
++ * we keep a budget/3 margin of safety before declaring a
++ * process slow.
++ */
++ return expected > (4 * bfqq->entity.budget) / 3;
++}
++
++/*
++ * To be deemed as soft real-time, an application must meet two
++ * requirements. First, the application must not require an average
++ * bandwidth higher than the approximate bandwidth required to playback or
++ * record a compressed high-definition video.
++ * The next function is invoked on the completion of the last request of a
++ * batch, to compute the next-start time instant, soft_rt_next_start, such
++ * that, if the next request of the application does not arrive before
++ * soft_rt_next_start, then the above requirement on the bandwidth is met.
++ *
++ * The second requirement is that the request pattern of the application is
++ * isochronous, i.e., that, after issuing a request or a batch of requests,
++ * the application stops issuing new requests until all its pending requests
++ * have been completed. After that, the application may issue a new batch,
++ * and so on.
++ * For this reason the next function is invoked to compute
++ * soft_rt_next_start only for applications that meet this requirement,
++ * whereas soft_rt_next_start is set to infinity for applications that do
++ * not.
++ *
++ * Unfortunately, even a greedy application may happen to behave in an
++ * isochronous way if the CPU load is high. In fact, the application may
++ * stop issuing requests while the CPUs are busy serving other processes,
++ * then restart, then stop again for a while, and so on. In addition, if
++ * the disk achieves a low enough throughput with the request pattern
++ * issued by the application (e.g., because the request pattern is random
++ * and/or the device is slow), then the application may meet the above
++ * bandwidth requirement too. To prevent such a greedy application to be
++ * deemed as soft real-time, a further rule is used in the computation of
++ * soft_rt_next_start: soft_rt_next_start must be higher than the current
++ * time plus the maximum time for which the arrival of a request is waited
++ * for when a sync queue becomes idle, namely bfqd->bfq_slice_idle.
++ * This filters out greedy applications, as the latter issue instead their
++ * next request as soon as possible after the last one has been completed
++ * (in contrast, when a batch of requests is completed, a soft real-time
++ * application spends some time processing data).
++ *
++ * Unfortunately, the last filter may easily generate false positives if
++ * only bfqd->bfq_slice_idle is used as a reference time interval and one
++ * or both the following cases occur:
++ * 1) HZ is so low that the duration of a jiffy is comparable to or higher
++ * than bfqd->bfq_slice_idle. This happens, e.g., on slow devices with
++ * HZ=100.
++ * 2) jiffies, instead of increasing at a constant rate, may stop increasing
++ * for a while, then suddenly 'jump' by several units to recover the lost
++ * increments. This seems to happen, e.g., inside virtual machines.
++ * To address this issue, we do not use as a reference time interval just
++ * bfqd->bfq_slice_idle, but bfqd->bfq_slice_idle plus a few jiffies. In
++ * particular we add the minimum number of jiffies for which the filter
++ * seems to be quite precise also in embedded systems and KVM/QEMU virtual
++ * machines.
++ */
++static inline unsigned long bfq_bfqq_softrt_next_start(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ return max(bfqq->last_idle_bklogged +
++ HZ * bfqq->service_from_backlogged /
++ bfqd->bfq_wr_max_softrt_rate,
++ jiffies + bfqq->bfqd->bfq_slice_idle + 4);
++}
++
++/*
++ * Return the largest-possible time instant such that, for as long as possible,
++ * the current time will be lower than this time instant according to the macro
++ * time_is_before_jiffies().
++ */
++static inline unsigned long bfq_infinity_from_now(unsigned long now)
++{
++ return now + ULONG_MAX / 2;
++}
++
++/**
++ * bfq_bfqq_expire - expire a queue.
++ * @bfqd: device owning the queue.
++ * @bfqq: the queue to expire.
++ * @compensate: if true, compensate for the time spent idling.
++ * @reason: the reason causing the expiration.
++ *
++ *
++ * If the process associated to the queue is slow (i.e., seeky), or in
++ * case of budget timeout, or, finally, if it is async, we
++ * artificially charge it an entire budget (independently of the
++ * actual service it received). As a consequence, the queue will get
++ * higher timestamps than the correct ones upon reactivation, and
++ * hence it will be rescheduled as if it had received more service
++ * than what it actually received. In the end, this class of processes
++ * will receive less service in proportion to how slowly they consume
++ * their budgets (and hence how seriously they tend to lower the
++ * throughput).
++ *
++ * In contrast, when a queue expires because it has been idling for
++ * too much or because it exhausted its budget, we do not touch the
++ * amount of service it has received. Hence when the queue will be
++ * reactivated and its timestamps updated, the latter will be in sync
++ * with the actual service received by the queue until expiration.
++ *
++ * Charging a full budget to the first type of queues and the exact
++ * service to the others has the effect of using the WF2Q+ policy to
++ * schedule the former on a timeslice basis, without violating the
++ * service domain guarantees of the latter.
++ */
++static void bfq_bfqq_expire(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq,
++ int compensate,
++ enum bfqq_expiration reason)
++{
++ int slow;
++ BUG_ON(bfqq != bfqd->in_service_queue);
++
++ /* Update disk peak rate for autotuning and check whether the
++ * process is slow (see bfq_update_peak_rate).
++ */
++ slow = bfq_update_peak_rate(bfqd, bfqq, compensate, reason);
++
++ /*
++ * As above explained, 'punish' slow (i.e., seeky), timed-out
++ * and async queues, to favor sequential sync workloads.
++ *
++ * Processes doing I/O in the slower disk zones will tend to be
++ * slow(er) even if not seeky. Hence, since the estimated peak
++ * rate is actually an average over the disk surface, these
++ * processes may timeout just for bad luck. To avoid punishing
++ * them we do not charge a full budget to a process that
++ * succeeded in consuming at least 2/3 of its budget.
++ */
++ if (slow || (reason == BFQ_BFQQ_BUDGET_TIMEOUT &&
++ bfq_bfqq_budget_left(bfqq) >= bfqq->entity.budget / 3))
++ bfq_bfqq_charge_full_budget(bfqq);
++
++ bfqq->service_from_backlogged += bfqq->entity.service;
++
++ if (BFQQ_SEEKY(bfqq) && reason == BFQ_BFQQ_BUDGET_TIMEOUT &&
++ !bfq_bfqq_constantly_seeky(bfqq)) {
++ bfq_mark_bfqq_constantly_seeky(bfqq);
++ if (!blk_queue_nonrot(bfqd->queue))
++ bfqd->const_seeky_busy_in_flight_queues++;
++ }
++
++ if (reason == BFQ_BFQQ_TOO_IDLE &&
++ bfqq->entity.service <= 2 * bfqq->entity.budget / 10 )
++ bfq_clear_bfqq_IO_bound(bfqq);
++
++ if (bfqd->low_latency && bfqq->wr_coeff == 1)
++ bfqq->last_wr_start_finish = jiffies;
++
++ if (bfqd->low_latency && bfqd->bfq_wr_max_softrt_rate > 0 &&
++ RB_EMPTY_ROOT(&bfqq->sort_list)) {
++ /*
++ * If we get here, and there are no outstanding requests,
++ * then the request pattern is isochronous (see the comments
++ * to the function bfq_bfqq_softrt_next_start()). Hence we
++ * can compute soft_rt_next_start. If, instead, the queue
++ * still has outstanding requests, then we have to wait
++ * for the completion of all the outstanding requests to
++ * discover whether the request pattern is actually
++ * isochronous.
++ */
++ if (bfqq->dispatched == 0)
++ bfqq->soft_rt_next_start =
++ bfq_bfqq_softrt_next_start(bfqd, bfqq);
++ else {
++ /*
++ * The application is still waiting for the
++ * completion of one or more requests:
++ * prevent it from possibly being incorrectly
++ * deemed as soft real-time by setting its
++ * soft_rt_next_start to infinity. In fact,
++ * without this assignment, the application
++ * would be incorrectly deemed as soft
++ * real-time if:
++ * 1) it issued a new request before the
++ * completion of all its in-flight
++ * requests, and
++ * 2) at that time, its soft_rt_next_start
++ * happened to be in the past.
++ */
++ bfqq->soft_rt_next_start =
++ bfq_infinity_from_now(jiffies);
++ /*
++ * Schedule an update of soft_rt_next_start to when
++ * the task may be discovered to be isochronous.
++ */
++ bfq_mark_bfqq_softrt_update(bfqq);
++ }
++ }
++
++ bfq_log_bfqq(bfqd, bfqq,
++ "expire (%d, slow %d, num_disp %d, idle_win %d)", reason,
++ slow, bfqq->dispatched, bfq_bfqq_idle_window(bfqq));
++
++ /*
++ * Increase, decrease or leave budget unchanged according to
++ * reason.
++ */
++ __bfq_bfqq_recalc_budget(bfqd, bfqq, reason);
++ __bfq_bfqq_expire(bfqd, bfqq);
++}
++
++/*
++ * Budget timeout is not implemented through a dedicated timer, but
++ * just checked on request arrivals and completions, as well as on
++ * idle timer expirations.
++ */
++static int bfq_bfqq_budget_timeout(struct bfq_queue *bfqq)
++{
++ if (bfq_bfqq_budget_new(bfqq) ||
++ time_before(jiffies, bfqq->budget_timeout))
++ return 0;
++ return 1;
++}
++
++/*
++ * If we expire a queue that is waiting for the arrival of a new
++ * request, we may prevent the fictitious timestamp back-shifting that
++ * allows the guarantees of the queue to be preserved (see [1] for
++ * this tricky aspect). Hence we return true only if this condition
++ * does not hold, or if the queue is slow enough to deserve only to be
++ * kicked off for preserving a high throughput.
++*/
++static inline int bfq_may_expire_for_budg_timeout(struct bfq_queue *bfqq)
++{
++ bfq_log_bfqq(bfqq->bfqd, bfqq,
++ "may_budget_timeout: wait_request %d left %d timeout %d",
++ bfq_bfqq_wait_request(bfqq),
++ bfq_bfqq_budget_left(bfqq) >= bfqq->entity.budget / 3,
++ bfq_bfqq_budget_timeout(bfqq));
++
++ return (!bfq_bfqq_wait_request(bfqq) ||
++ bfq_bfqq_budget_left(bfqq) >= bfqq->entity.budget / 3)
++ &&
++ bfq_bfqq_budget_timeout(bfqq);
++}
++
++/*
++ * Device idling is allowed only for the queues for which this function
++ * returns true. For this reason, the return value of this function plays a
++ * critical role for both throughput boosting and service guarantees. The
++ * return value is computed through a logical expression. In this rather
++ * long comment, we try to briefly describe all the details and motivations
++ * behind the components of this logical expression.
++ *
++ * First, the expression is false if bfqq is not sync, or if: bfqq happened
++ * to become active during a large burst of queue activations, and the
++ * pattern of requests bfqq contains boosts the throughput if bfqq is
++ * expired. In fact, queues that became active during a large burst benefit
++ * only from throughput, as discussed in the comments to bfq_handle_burst.
++ * In this respect, expiring bfqq certainly boosts the throughput on NCQ-
++ * capable flash-based devices, whereas, on rotational devices, it boosts
++ * the throughput only if bfqq contains random requests.
++ *
++ * On the opposite end, if (a) bfqq is sync, (b) the above burst-related
++ * condition does not hold, and (c) bfqq is being weight-raised, then the
++ * expression always evaluates to true, as device idling is instrumental
++ * for preserving low-latency guarantees (see [1]). If, instead, conditions
++ * (a) and (b) do hold, but (c) does not, then the expression evaluates to
++ * true only if: (1) bfqq is I/O-bound and has a non-null idle window, and
++ * (2) at least one of the following two conditions holds.
++ * The first condition is that the device is not performing NCQ, because
++ * idling the device most certainly boosts the throughput if this condition
++ * holds and bfqq is I/O-bound and has been granted a non-null idle window.
++ * The second compound condition is made of the logical AND of two components.
++ *
++ * The first component is true only if there is no weight-raised busy
++ * queue. This guarantees that the device is not idled for a sync non-
++ * weight-raised queue when there are busy weight-raised queues. The former
++ * is then expired immediately if empty. Combined with the timestamping
++ * rules of BFQ (see [1] for details), this causes sync non-weight-raised
++ * queues to get a lower number of requests served, and hence to ask for a
++ * lower number of requests from the request pool, before the busy weight-
++ * raised queues get served again.
++ *
++ * This is beneficial for the processes associated with weight-raised
++ * queues, when the request pool is saturated (e.g., in the presence of
++ * write hogs). In fact, if the processes associated with the other queues
++ * ask for requests at a lower rate, then weight-raised processes have a
++ * higher probability to get a request from the pool immediately (or at
++ * least soon) when they need one. Hence they have a higher probability to
++ * actually get a fraction of the disk throughput proportional to their
++ * high weight. This is especially true with NCQ-capable drives, which
++ * enqueue several requests in advance and further reorder internally-
++ * queued requests.
++ *
++ * In the end, mistreating non-weight-raised queues when there are busy
++ * weight-raised queues seems to mitigate starvation problems in the
++ * presence of heavy write workloads and NCQ, and hence to guarantee a
++ * higher application and system responsiveness in these hostile scenarios.
++ *
++ * If the first component of the compound condition is instead true, i.e.,
++ * there is no weight-raised busy queue, then the second component of the
++ * compound condition takes into account service-guarantee and throughput
++ * issues related to NCQ (recall that the compound condition is evaluated
++ * only if the device is detected as supporting NCQ).
++ *
++ * As for service guarantees, allowing the drive to enqueue more than one
++ * request at a time, and hence delegating de facto final scheduling
++ * decisions to the drive's internal scheduler, causes loss of control on
++ * the actual request service order. In this respect, when the drive is
++ * allowed to enqueue more than one request at a time, the service
++ * distribution enforced by the drive's internal scheduler is likely to
++ * coincide with the desired device-throughput distribution only in the
++ * following, perfectly symmetric, scenario:
++ * 1) all active queues have the same weight,
++ * 2) all active groups at the same level in the groups tree have the same
++ * weight,
++ * 3) all active groups at the same level in the groups tree have the same
++ * number of children.
++ *
++ * Even in such a scenario, sequential I/O may still receive a preferential
++ * treatment, but this is not likely to be a big issue with flash-based
++ * devices, because of their non-dramatic loss of throughput with random
++ * I/O. Things do differ with HDDs, for which additional care is taken, as
++ * explained after completing the discussion for flash-based devices.
++ *
++ * Unfortunately, keeping the necessary state for evaluating exactly the
++ * above symmetry conditions would be quite complex and time-consuming.
++ * Therefore BFQ evaluates instead the following stronger sub-conditions,
++ * for which it is much easier to maintain the needed state:
++ * 1) all active queues have the same weight,
++ * 2) all active groups have the same weight,
++ * 3) all active groups have at most one active child each.
++ * In particular, the last two conditions are always true if hierarchical
++ * support and the cgroups interface are not enabled, hence no state needs
++ * to be maintained in this case.
++ *
++ * According to the above considerations, the second component of the
++ * compound condition evaluates to true if any of the above symmetry
++ * sub-condition does not hold, or the device is not flash-based. Therefore,
++ * if also the first component is true, then idling is allowed for a sync
++ * queue. These are the only sub-conditions considered if the device is
++ * flash-based, as, for such a device, it is sensible to force idling only
++ * for service-guarantee issues. In fact, as for throughput, idling
++ * NCQ-capable flash-based devices would not boost the throughput even
++ * with sequential I/O; rather it would lower the throughput in proportion
++ * to how fast the device is. In the end, (only) if all the three
++ * sub-conditions hold and the device is flash-based, the compound
++ * condition evaluates to false and therefore no idling is performed.
++ *
++ * As already said, things change with a rotational device, where idling
++ * boosts the throughput with sequential I/O (even with NCQ). Hence, for
++ * such a device the second component of the compound condition evaluates
++ * to true also if the following additional sub-condition does not hold:
++ * the queue is constantly seeky. Unfortunately, this different behavior
++ * with respect to flash-based devices causes an additional asymmetry: if
++ * some sync queues enjoy idling and some other sync queues do not, then
++ * the latter get a low share of the device throughput, simply because the
++ * former get many requests served after being set as in service, whereas
++ * the latter do not. As a consequence, to guarantee the desired throughput
++ * distribution, on HDDs the compound expression evaluates to true (and
++ * hence device idling is performed) also if the following last symmetry
++ * condition does not hold: no other queue is benefiting from idling. Also
++ * this last condition is actually replaced with a simpler-to-maintain and
++ * stronger condition: there is no busy queue which is not constantly seeky
++ * (and hence may also benefit from idling).
++ *
++ * To sum up, when all the required symmetry and throughput-boosting
++ * sub-conditions hold, the second component of the compound condition
++ * evaluates to false, and hence no idling is performed. This helps to
++ * keep the drives' internal queues full on NCQ-capable devices, and hence
++ * to boost the throughput, without causing 'almost' any loss of service
++ * guarantees. The 'almost' follows from the fact that, if the internal
++ * queue of one such device is filled while all the sub-conditions hold,
++ * but at some point in time some sub-condition stops to hold, then it may
++ * become impossible to let requests be served in the new desired order
++ * until all the requests already queued in the device have been served.
++ */
++static inline bool bfq_bfqq_must_not_expire(struct bfq_queue *bfqq)
++{
++ struct bfq_data *bfqd = bfqq->bfqd;
++#define cond_for_seeky_on_ncq_hdd (bfq_bfqq_constantly_seeky(bfqq) && \
++ bfqd->busy_in_flight_queues == \
++ bfqd->const_seeky_busy_in_flight_queues)
++
++#define cond_for_expiring_in_burst (bfq_bfqq_in_large_burst(bfqq) && \
++ bfqd->hw_tag && \
++ (blk_queue_nonrot(bfqd->queue) || \
++ bfq_bfqq_constantly_seeky(bfqq)))
++
++/*
++ * Condition for expiring a non-weight-raised queue (and hence not idling
++ * the device).
++ */
++#define cond_for_expiring_non_wr (bfqd->hw_tag && \
++ (bfqd->wr_busy_queues > 0 || \
++ (blk_queue_nonrot(bfqd->queue) || \
++ cond_for_seeky_on_ncq_hdd)))
++
++ return bfq_bfqq_sync(bfqq) &&
++ !cond_for_expiring_in_burst &&
++ (bfqq->wr_coeff > 1 || !symmetric_scenario ||
++ (bfq_bfqq_IO_bound(bfqq) && bfq_bfqq_idle_window(bfqq) &&
++ !cond_for_expiring_non_wr)
++ );
++}
++
++/*
++ * If the in-service queue is empty but sync, and the function
++ * bfq_bfqq_must_not_expire returns true, then:
++ * 1) the queue must remain in service and cannot be expired, and
++ * 2) the disk must be idled to wait for the possible arrival of a new
++ * request for the queue.
++ * See the comments to the function bfq_bfqq_must_not_expire for the reasons
++ * why performing device idling is the best choice to boost the throughput
++ * and preserve service guarantees when bfq_bfqq_must_not_expire itself
++ * returns true.
++ */
++static inline bool bfq_bfqq_must_idle(struct bfq_queue *bfqq)
++{
++ struct bfq_data *bfqd = bfqq->bfqd;
++
++ return RB_EMPTY_ROOT(&bfqq->sort_list) && bfqd->bfq_slice_idle != 0 &&
++ bfq_bfqq_must_not_expire(bfqq);
++}
++
++/*
++ * Select a queue for service. If we have a current queue in service,
++ * check whether to continue servicing it, or retrieve and set a new one.
++ */
++static struct bfq_queue *bfq_select_queue(struct bfq_data *bfqd)
++{
++ struct bfq_queue *bfqq, *new_bfqq = NULL;
++ struct request *next_rq;
++ enum bfqq_expiration reason = BFQ_BFQQ_BUDGET_TIMEOUT;
++
++ bfqq = bfqd->in_service_queue;
++ if (bfqq == NULL)
++ goto new_queue;
++
++ bfq_log_bfqq(bfqd, bfqq, "select_queue: already in-service queue");
++
++ /*
++ * If another queue has a request waiting within our mean seek
++ * distance, let it run. The expire code will check for close
++ * cooperators and put the close queue at the front of the
++ * service tree. If possible, merge the expiring queue with the
++ * new bfqq.
++ */
++ new_bfqq = bfq_close_cooperator(bfqd, bfqq);
++ if (new_bfqq != NULL && bfqq->new_bfqq == NULL)
++ bfq_setup_merge(bfqq, new_bfqq);
++
++ if (bfq_may_expire_for_budg_timeout(bfqq) &&
++ !timer_pending(&bfqd->idle_slice_timer) &&
++ !bfq_bfqq_must_idle(bfqq))
++ goto expire;
++
++ next_rq = bfqq->next_rq;
++ /*
++ * If bfqq has requests queued and it has enough budget left to
++ * serve them, keep the queue, otherwise expire it.
++ */
++ if (next_rq != NULL) {
++ if (bfq_serv_to_charge(next_rq, bfqq) >
++ bfq_bfqq_budget_left(bfqq)) {
++ reason = BFQ_BFQQ_BUDGET_EXHAUSTED;
++ goto expire;
++ } else {
++ /*
++ * The idle timer may be pending because we may
++ * not disable disk idling even when a new request
++ * arrives.
++ */
++ if (timer_pending(&bfqd->idle_slice_timer)) {
++ /*
++ * If we get here: 1) at least a new request
++ * has arrived but we have not disabled the
++ * timer because the request was too small,
++ * 2) then the block layer has unplugged
++ * the device, causing the dispatch to be
++ * invoked.
++ *
++ * Since the device is unplugged, now the
++ * requests are probably large enough to
++ * provide a reasonable throughput.
++ * So we disable idling.
++ */
++ bfq_clear_bfqq_wait_request(bfqq);
++ del_timer(&bfqd->idle_slice_timer);
++ }
++ if (new_bfqq == NULL)
++ goto keep_queue;
++ else
++ goto expire;
++ }
++ }
++
++ /*
++ * No requests pending. However, if the in-service queue is idling
++ * for a new request, or has requests waiting for a completion and
++ * may idle after their completion, then keep it anyway.
++ */
++ if (new_bfqq == NULL && (timer_pending(&bfqd->idle_slice_timer) ||
++ (bfqq->dispatched != 0 && bfq_bfqq_must_not_expire(bfqq)))) {
++ bfqq = NULL;
++ goto keep_queue;
++ } else if (new_bfqq != NULL && timer_pending(&bfqd->idle_slice_timer)) {
++ /*
++ * Expiring the queue because there is a close cooperator,
++ * cancel timer.
++ */
++ bfq_clear_bfqq_wait_request(bfqq);
++ del_timer(&bfqd->idle_slice_timer);
++ }
++
++ reason = BFQ_BFQQ_NO_MORE_REQUESTS;
++expire:
++ bfq_bfqq_expire(bfqd, bfqq, 0, reason);
++new_queue:
++ bfqq = bfq_set_in_service_queue(bfqd, new_bfqq);
++ bfq_log(bfqd, "select_queue: new queue %d returned",
++ bfqq != NULL ? bfqq->pid : 0);
++keep_queue:
++ return bfqq;
++}
++
++static void bfq_update_wr_data(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ if (bfqq->wr_coeff > 1) { /* queue is being boosted */
++ struct bfq_entity *entity = &bfqq->entity;
++
++ bfq_log_bfqq(bfqd, bfqq,
++ "raising period dur %u/%u msec, old coeff %u, w %d(%d)",
++ jiffies_to_msecs(jiffies -
++ bfqq->last_wr_start_finish),
++ jiffies_to_msecs(bfqq->wr_cur_max_time),
++ bfqq->wr_coeff,
++ bfqq->entity.weight, bfqq->entity.orig_weight);
++
++ BUG_ON(bfqq != bfqd->in_service_queue && entity->weight !=
++ entity->orig_weight * bfqq->wr_coeff);
++ if (entity->ioprio_changed)
++ bfq_log_bfqq(bfqd, bfqq, "WARN: pending prio change");
++ /*
++ * If the queue was activated in a burst, or
++ * too much time has elapsed from the beginning
++ * of this weight-raising, then end weight raising.
++ */
++ if (bfq_bfqq_in_large_burst(bfqq) ||
++ time_is_before_jiffies(bfqq->last_wr_start_finish +
++ bfqq->wr_cur_max_time)) {
++ bfqq->last_wr_start_finish = jiffies;
++ bfq_log_bfqq(bfqd, bfqq,
++ "wrais ending at %lu, rais_max_time %u",
++ bfqq->last_wr_start_finish,
++ jiffies_to_msecs(bfqq->wr_cur_max_time));
++ bfq_bfqq_end_wr(bfqq);
++ __bfq_entity_update_weight_prio(
++ bfq_entity_service_tree(entity),
++ entity);
++ }
++ }
++}
++
++/*
++ * Dispatch one request from bfqq, moving it to the request queue
++ * dispatch list.
++ */
++static int bfq_dispatch_request(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ int dispatched = 0;
++ struct request *rq;
++ unsigned long service_to_charge;
++
++ BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list));
++
++ /* Follow expired path, else get first next available. */
++ rq = bfq_check_fifo(bfqq);
++ if (rq == NULL)
++ rq = bfqq->next_rq;
++ service_to_charge = bfq_serv_to_charge(rq, bfqq);
++
++ if (service_to_charge > bfq_bfqq_budget_left(bfqq)) {
++ /*
++ * This may happen if the next rq is chosen in fifo order
++ * instead of sector order. The budget is properly
++ * dimensioned to be always sufficient to serve the next
++ * request only if it is chosen in sector order. The reason
++ * is that it would be quite inefficient and little useful
++ * to always make sure that the budget is large enough to
++ * serve even the possible next rq in fifo order.
++ * In fact, requests are seldom served in fifo order.
++ *
++ * Expire the queue for budget exhaustion, and make sure
++ * that the next act_budget is enough to serve the next
++ * request, even if it comes from the fifo expired path.
++ */
++ bfqq->next_rq = rq;
++ /*
++ * Since this dispatch is failed, make sure that
++ * a new one will be performed
++ */
++ if (!bfqd->rq_in_driver)
++ bfq_schedule_dispatch(bfqd);
++ goto expire;
++ }
++
++ /* Finally, insert request into driver dispatch list. */
++ bfq_bfqq_served(bfqq, service_to_charge);
++ bfq_dispatch_insert(bfqd->queue, rq);
++
++ bfq_update_wr_data(bfqd, bfqq);
++
++ bfq_log_bfqq(bfqd, bfqq,
++ "dispatched %u sec req (%llu), budg left %lu",
++ blk_rq_sectors(rq),
++ (long long unsigned)blk_rq_pos(rq),
++ bfq_bfqq_budget_left(bfqq));
++
++ dispatched++;
++
++ if (bfqd->in_service_bic == NULL) {
++ atomic_long_inc(&RQ_BIC(rq)->icq.ioc->refcount);
++ bfqd->in_service_bic = RQ_BIC(rq);
++ }
++
++ if (bfqd->busy_queues > 1 && ((!bfq_bfqq_sync(bfqq) &&
++ dispatched >= bfqd->bfq_max_budget_async_rq) ||
++ bfq_class_idle(bfqq)))
++ goto expire;
++
++ return dispatched;
++
++expire:
++ bfq_bfqq_expire(bfqd, bfqq, 0, BFQ_BFQQ_BUDGET_EXHAUSTED);
++ return dispatched;
++}
++
++static int __bfq_forced_dispatch_bfqq(struct bfq_queue *bfqq)
++{
++ int dispatched = 0;
++
++ while (bfqq->next_rq != NULL) {
++ bfq_dispatch_insert(bfqq->bfqd->queue, bfqq->next_rq);
++ dispatched++;
++ }
++
++ BUG_ON(!list_empty(&bfqq->fifo));
++ return dispatched;
++}
++
++/*
++ * Drain our current requests.
++ * Used for barriers and when switching io schedulers on-the-fly.
++ */
++static int bfq_forced_dispatch(struct bfq_data *bfqd)
++{
++ struct bfq_queue *bfqq, *n;
++ struct bfq_service_tree *st;
++ int dispatched = 0;
++
++ bfqq = bfqd->in_service_queue;
++ if (bfqq != NULL)
++ __bfq_bfqq_expire(bfqd, bfqq);
++
++ /*
++ * Loop through classes, and be careful to leave the scheduler
++ * in a consistent state, as feedback mechanisms and vtime
++ * updates cannot be disabled during the process.
++ */
++ list_for_each_entry_safe(bfqq, n, &bfqd->active_list, bfqq_list) {
++ st = bfq_entity_service_tree(&bfqq->entity);
++
++ dispatched += __bfq_forced_dispatch_bfqq(bfqq);
++ bfqq->max_budget = bfq_max_budget(bfqd);
++
++ bfq_forget_idle(st);
++ }
++
++ BUG_ON(bfqd->busy_queues != 0);
++
++ return dispatched;
++}
++
++static int bfq_dispatch_requests(struct request_queue *q, int force)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++ struct bfq_queue *bfqq;
++ int max_dispatch;
++
++ bfq_log(bfqd, "dispatch requests: %d busy queues", bfqd->busy_queues);
++ if (bfqd->busy_queues == 0)
++ return 0;
++
++ if (unlikely(force))
++ return bfq_forced_dispatch(bfqd);
++
++ bfqq = bfq_select_queue(bfqd);
++ if (bfqq == NULL)
++ return 0;
++
++ if (bfq_class_idle(bfqq))
++ max_dispatch = 1;
++
++ if (!bfq_bfqq_sync(bfqq))
++ max_dispatch = bfqd->bfq_max_budget_async_rq;
++
++ if (!bfq_bfqq_sync(bfqq) && bfqq->dispatched >= max_dispatch) {
++ if (bfqd->busy_queues > 1)
++ return 0;
++ if (bfqq->dispatched >= 4 * max_dispatch)
++ return 0;
++ }
++
++ if (bfqd->sync_flight != 0 && !bfq_bfqq_sync(bfqq))
++ return 0;
++
++ bfq_clear_bfqq_wait_request(bfqq);
++ BUG_ON(timer_pending(&bfqd->idle_slice_timer));
++
++ if (!bfq_dispatch_request(bfqd, bfqq))
++ return 0;
++
++ bfq_log_bfqq(bfqd, bfqq, "dispatched %s request",
++ bfq_bfqq_sync(bfqq) ? "sync" : "async");
++
++ return 1;
++}
++
++/*
++ * Task holds one reference to the queue, dropped when task exits. Each rq
++ * in-flight on this queue also holds a reference, dropped when rq is freed.
++ *
++ * Queue lock must be held here.
++ */
++static void bfq_put_queue(struct bfq_queue *bfqq)
++{
++ struct bfq_data *bfqd = bfqq->bfqd;
++
++ BUG_ON(atomic_read(&bfqq->ref) <= 0);
++
++ bfq_log_bfqq(bfqd, bfqq, "put_queue: %p %d", bfqq,
++ atomic_read(&bfqq->ref));
++ if (!atomic_dec_and_test(&bfqq->ref))
++ return;
++
++ BUG_ON(rb_first(&bfqq->sort_list) != NULL);
++ BUG_ON(bfqq->allocated[READ] + bfqq->allocated[WRITE] != 0);
++ BUG_ON(bfqq->entity.tree != NULL);
++ BUG_ON(bfq_bfqq_busy(bfqq));
++ BUG_ON(bfqd->in_service_queue == bfqq);
++
++ if (bfq_bfqq_sync(bfqq))
++ /*
++ * The fact that this queue is being destroyed does not
++ * invalidate the fact that this queue may have been
++ * activated during the current burst. As a consequence,
++ * although the queue does not exist anymore, and hence
++ * needs to be removed from the burst list if there,
++ * the burst size has not to be decremented.
++ */
++ hlist_del_init(&bfqq->burst_list_node);
++
++ bfq_log_bfqq(bfqd, bfqq, "put_queue: %p freed", bfqq);
++
++ kmem_cache_free(bfq_pool, bfqq);
++}
++
++static void bfq_put_cooperator(struct bfq_queue *bfqq)
++{
++ struct bfq_queue *__bfqq, *next;
++
++ /*
++ * If this queue was scheduled to merge with another queue, be
++ * sure to drop the reference taken on that queue (and others in
++ * the merge chain). See bfq_setup_merge and bfq_merge_bfqqs.
++ */
++ __bfqq = bfqq->new_bfqq;
++ while (__bfqq) {
++ if (__bfqq == bfqq)
++ break;
++ next = __bfqq->new_bfqq;
++ bfq_put_queue(__bfqq);
++ __bfqq = next;
++ }
++}
++
++static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq)
++{
++ if (bfqq == bfqd->in_service_queue) {
++ __bfq_bfqq_expire(bfqd, bfqq);
++ bfq_schedule_dispatch(bfqd);
++ }
++
++ bfq_log_bfqq(bfqd, bfqq, "exit_bfqq: %p, %d", bfqq,
++ atomic_read(&bfqq->ref));
++
++ bfq_put_cooperator(bfqq);
++
++ bfq_put_queue(bfqq);
++}
++
++static inline void bfq_init_icq(struct io_cq *icq)
++{
++ struct bfq_io_cq *bic = icq_to_bic(icq);
++
++ bic->ttime.last_end_request = jiffies;
++}
++
++static void bfq_exit_icq(struct io_cq *icq)
++{
++ struct bfq_io_cq *bic = icq_to_bic(icq);
++ struct bfq_data *bfqd = bic_to_bfqd(bic);
++
++ if (bic->bfqq[BLK_RW_ASYNC]) {
++ bfq_exit_bfqq(bfqd, bic->bfqq[BLK_RW_ASYNC]);
++ bic->bfqq[BLK_RW_ASYNC] = NULL;
++ }
++
++ if (bic->bfqq[BLK_RW_SYNC]) {
++ bfq_exit_bfqq(bfqd, bic->bfqq[BLK_RW_SYNC]);
++ bic->bfqq[BLK_RW_SYNC] = NULL;
++ }
++}
++
++/*
++ * Update the entity prio values; note that the new values will not
++ * be used until the next (re)activation.
++ */
++static void bfq_set_next_ioprio_data(struct bfq_queue *bfqq, struct bfq_io_cq *bic)
++{
++ struct task_struct *tsk = current;
++ int ioprio_class;
++
++ ioprio_class = IOPRIO_PRIO_CLASS(bic->ioprio);
++ switch (ioprio_class) {
++ default:
++ dev_err(bfqq->bfqd->queue->backing_dev_info.dev,
++ "bfq: bad prio class %d\n", ioprio_class);
++ case IOPRIO_CLASS_NONE:
++ /*
++ * No prio set, inherit CPU scheduling settings.
++ */
++ bfqq->entity.new_ioprio = task_nice_ioprio(tsk);
++ bfqq->entity.new_ioprio_class = task_nice_ioclass(tsk);
++ break;
++ case IOPRIO_CLASS_RT:
++ bfqq->entity.new_ioprio = IOPRIO_PRIO_DATA(bic->ioprio);
++ bfqq->entity.new_ioprio_class = IOPRIO_CLASS_RT;
++ break;
++ case IOPRIO_CLASS_BE:
++ bfqq->entity.new_ioprio = IOPRIO_PRIO_DATA(bic->ioprio);
++ bfqq->entity.new_ioprio_class = IOPRIO_CLASS_BE;
++ break;
++ case IOPRIO_CLASS_IDLE:
++ bfqq->entity.new_ioprio_class = IOPRIO_CLASS_IDLE;
++ bfqq->entity.new_ioprio = 7;
++ bfq_clear_bfqq_idle_window(bfqq);
++ break;
++ }
++
++ if (bfqq->entity.new_ioprio < 0 ||
++ bfqq->entity.new_ioprio >= IOPRIO_BE_NR) {
++ printk(KERN_CRIT "bfq_set_next_ioprio_data: new_ioprio %d\n",
++ bfqq->entity.new_ioprio);
++ BUG();
++ }
++
++ bfqq->entity.new_weight = bfq_ioprio_to_weight(bfqq->entity.new_ioprio);
++ bfqq->entity.ioprio_changed = 1;
++}
++
++static void bfq_check_ioprio_change(struct bfq_io_cq *bic)
++{
++ struct bfq_data *bfqd;
++ struct bfq_queue *bfqq, *new_bfqq;
++ struct bfq_group *bfqg;
++ unsigned long uninitialized_var(flags);
++ int ioprio = bic->icq.ioc->ioprio;
++
++ bfqd = bfq_get_bfqd_locked(&(bic->icq.q->elevator->elevator_data),
++ &flags);
++ /*
++ * This condition may trigger on a newly created bic, be sure to
++ * drop the lock before returning.
++ */
++ if (unlikely(bfqd == NULL) || likely(bic->ioprio == ioprio))
++ goto out;
++
++ bic->ioprio = ioprio;
++
++ bfqq = bic->bfqq[BLK_RW_ASYNC];
++ if (bfqq != NULL) {
++ bfqg = container_of(bfqq->entity.sched_data, struct bfq_group,
++ sched_data);
++ new_bfqq = bfq_get_queue(bfqd, bfqg, BLK_RW_ASYNC, bic,
++ GFP_ATOMIC);
++ if (new_bfqq != NULL) {
++ bic->bfqq[BLK_RW_ASYNC] = new_bfqq;
++ bfq_log_bfqq(bfqd, bfqq,
++ "check_ioprio_change: bfqq %p %d",
++ bfqq, atomic_read(&bfqq->ref));
++ bfq_put_queue(bfqq);
++ }
++ }
++
++ bfqq = bic->bfqq[BLK_RW_SYNC];
++ if (bfqq != NULL)
++ bfq_set_next_ioprio_data(bfqq, bic);
++
++out:
++ bfq_put_bfqd_unlock(bfqd, &flags);
++}
++
++static void bfq_init_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq,
++ struct bfq_io_cq *bic, pid_t pid, int is_sync)
++{
++ RB_CLEAR_NODE(&bfqq->entity.rb_node);
++ INIT_LIST_HEAD(&bfqq->fifo);
++ INIT_HLIST_NODE(&bfqq->burst_list_node);
++
++ atomic_set(&bfqq->ref, 0);
++ bfqq->bfqd = bfqd;
++
++ if (bic)
++ bfq_set_next_ioprio_data(bfqq, bic);
++
++ if (is_sync) {
++ if (!bfq_class_idle(bfqq))
++ bfq_mark_bfqq_idle_window(bfqq);
++ bfq_mark_bfqq_sync(bfqq);
++ }
++ bfq_mark_bfqq_IO_bound(bfqq);
++
++ /* Tentative initial value to trade off between thr and lat */
++ bfqq->max_budget = (2 * bfq_max_budget(bfqd)) / 3;
++ bfqq->pid = pid;
++
++ bfqq->wr_coeff = 1;
++ bfqq->last_wr_start_finish = 0;
++ /*
++ * Set to the value for which bfqq will not be deemed as
++ * soft rt when it becomes backlogged.
++ */
++ bfqq->soft_rt_next_start = bfq_infinity_from_now(jiffies);
++}
++
++static struct bfq_queue *bfq_find_alloc_queue(struct bfq_data *bfqd,
++ struct bfq_group *bfqg,
++ int is_sync,
++ struct bfq_io_cq *bic,
++ gfp_t gfp_mask)
++{
++ struct bfq_queue *bfqq, *new_bfqq = NULL;
++
++retry:
++ /* bic always exists here */
++ bfqq = bic_to_bfqq(bic, is_sync);
++
++ /*
++ * Always try a new alloc if we fall back to the OOM bfqq
++ * originally, since it should just be a temporary situation.
++ */
++ if (bfqq == NULL || bfqq == &bfqd->oom_bfqq) {
++ bfqq = NULL;
++ if (new_bfqq != NULL) {
++ bfqq = new_bfqq;
++ new_bfqq = NULL;
++ } else if (gfp_mask & __GFP_WAIT) {
++ spin_unlock_irq(bfqd->queue->queue_lock);
++ new_bfqq = kmem_cache_alloc_node(bfq_pool,
++ gfp_mask | __GFP_ZERO,
++ bfqd->queue->node);
++ spin_lock_irq(bfqd->queue->queue_lock);
++ if (new_bfqq != NULL)
++ goto retry;
++ } else {
++ bfqq = kmem_cache_alloc_node(bfq_pool,
++ gfp_mask | __GFP_ZERO,
++ bfqd->queue->node);
++ }
++
++ if (bfqq != NULL) {
++ bfq_init_bfqq(bfqd, bfqq, bic, current->pid,
++ is_sync);
++ bfq_init_entity(&bfqq->entity, bfqg);
++ bfq_log_bfqq(bfqd, bfqq, "allocated");
++ } else {
++ bfqq = &bfqd->oom_bfqq;
++ bfq_log_bfqq(bfqd, bfqq, "using oom bfqq");
++ }
++ }
++
++ if (new_bfqq != NULL)
++ kmem_cache_free(bfq_pool, new_bfqq);
++
++ return bfqq;
++}
++
++static struct bfq_queue **bfq_async_queue_prio(struct bfq_data *bfqd,
++ struct bfq_group *bfqg,
++ int ioprio_class, int ioprio)
++{
++ switch (ioprio_class) {
++ case IOPRIO_CLASS_RT:
++ return &bfqg->async_bfqq[0][ioprio];
++ case IOPRIO_CLASS_NONE:
++ ioprio = IOPRIO_NORM;
++ /* fall through */
++ case IOPRIO_CLASS_BE:
++ return &bfqg->async_bfqq[1][ioprio];
++ case IOPRIO_CLASS_IDLE:
++ return &bfqg->async_idle_bfqq;
++ default:
++ BUG();
++ }
++}
++
++static struct bfq_queue *bfq_get_queue(struct bfq_data *bfqd,
++ struct bfq_group *bfqg, int is_sync,
++ struct bfq_io_cq *bic, gfp_t gfp_mask)
++{
++ const int ioprio = IOPRIO_PRIO_DATA(bic->ioprio);
++ const int ioprio_class = IOPRIO_PRIO_CLASS(bic->ioprio);
++ struct bfq_queue **async_bfqq = NULL;
++ struct bfq_queue *bfqq = NULL;
++
++ if (!is_sync) {
++ async_bfqq = bfq_async_queue_prio(bfqd, bfqg, ioprio_class,
++ ioprio);
++ bfqq = *async_bfqq;
++ }
++
++ if (bfqq == NULL)
++ bfqq = bfq_find_alloc_queue(bfqd, bfqg, is_sync, bic, gfp_mask);
++
++ /*
++ * Pin the queue now that it's allocated, scheduler exit will
++ * prune it.
++ */
++ if (!is_sync && *async_bfqq == NULL) {
++ atomic_inc(&bfqq->ref);
++ bfq_log_bfqq(bfqd, bfqq, "get_queue, bfqq not in async: %p, %d",
++ bfqq, atomic_read(&bfqq->ref));
++ *async_bfqq = bfqq;
++ }
++
++ atomic_inc(&bfqq->ref);
++ bfq_log_bfqq(bfqd, bfqq, "get_queue, at end: %p, %d", bfqq,
++ atomic_read(&bfqq->ref));
++ return bfqq;
++}
++
++static void bfq_update_io_thinktime(struct bfq_data *bfqd,
++ struct bfq_io_cq *bic)
++{
++ unsigned long elapsed = jiffies - bic->ttime.last_end_request;
++ unsigned long ttime = min(elapsed, 2UL * bfqd->bfq_slice_idle);
++
++ bic->ttime.ttime_samples = (7*bic->ttime.ttime_samples + 256) / 8;
++ bic->ttime.ttime_total = (7*bic->ttime.ttime_total + 256*ttime) / 8;
++ bic->ttime.ttime_mean = (bic->ttime.ttime_total + 128) /
++ bic->ttime.ttime_samples;
++}
++
++static void bfq_update_io_seektime(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq,
++ struct request *rq)
++{
++ sector_t sdist;
++ u64 total;
++
++ if (bfqq->last_request_pos < blk_rq_pos(rq))
++ sdist = blk_rq_pos(rq) - bfqq->last_request_pos;
++ else
++ sdist = bfqq->last_request_pos - blk_rq_pos(rq);
++
++ /*
++ * Don't allow the seek distance to get too large from the
++ * odd fragment, pagein, etc.
++ */
++ if (bfqq->seek_samples == 0) /* first request, not really a seek */
++ sdist = 0;
++ else if (bfqq->seek_samples <= 60) /* second & third seek */
++ sdist = min(sdist, (bfqq->seek_mean * 4) + 2*1024*1024);
++ else
++ sdist = min(sdist, (bfqq->seek_mean * 4) + 2*1024*64);
++
++ bfqq->seek_samples = (7*bfqq->seek_samples + 256) / 8;
++ bfqq->seek_total = (7*bfqq->seek_total + (u64)256*sdist) / 8;
++ total = bfqq->seek_total + (bfqq->seek_samples/2);
++ do_div(total, bfqq->seek_samples);
++ bfqq->seek_mean = (sector_t)total;
++
++ bfq_log_bfqq(bfqd, bfqq, "dist=%llu mean=%llu", (u64)sdist,
++ (u64)bfqq->seek_mean);
++}
++
++/*
++ * Disable idle window if the process thinks too long or seeks so much that
++ * it doesn't matter.
++ */
++static void bfq_update_idle_window(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq,
++ struct bfq_io_cq *bic)
++{
++ int enable_idle;
++
++ /* Don't idle for async or idle io prio class. */
++ if (!bfq_bfqq_sync(bfqq) || bfq_class_idle(bfqq))
++ return;
++
++ enable_idle = bfq_bfqq_idle_window(bfqq);
++
++ if (atomic_read(&bic->icq.ioc->active_ref) == 0 ||
++ bfqd->bfq_slice_idle == 0 ||
++ (bfqd->hw_tag && BFQQ_SEEKY(bfqq) &&
++ bfqq->wr_coeff == 1))
++ enable_idle = 0;
++ else if (bfq_sample_valid(bic->ttime.ttime_samples)) {
++ if (bic->ttime.ttime_mean > bfqd->bfq_slice_idle &&
++ bfqq->wr_coeff == 1)
++ enable_idle = 0;
++ else
++ enable_idle = 1;
++ }
++ bfq_log_bfqq(bfqd, bfqq, "update_idle_window: enable_idle %d",
++ enable_idle);
++
++ if (enable_idle)
++ bfq_mark_bfqq_idle_window(bfqq);
++ else
++ bfq_clear_bfqq_idle_window(bfqq);
++}
++
++/*
++ * Called when a new fs request (rq) is added to bfqq. Check if there's
++ * something we should do about it.
++ */
++static void bfq_rq_enqueued(struct bfq_data *bfqd, struct bfq_queue *bfqq,
++ struct request *rq)
++{
++ struct bfq_io_cq *bic = RQ_BIC(rq);
++
++ if (rq->cmd_flags & REQ_META)
++ bfqq->meta_pending++;
++
++ bfq_update_io_thinktime(bfqd, bic);
++ bfq_update_io_seektime(bfqd, bfqq, rq);
++ if (!BFQQ_SEEKY(bfqq) && bfq_bfqq_constantly_seeky(bfqq)) {
++ bfq_clear_bfqq_constantly_seeky(bfqq);
++ if (!blk_queue_nonrot(bfqd->queue)) {
++ BUG_ON(!bfqd->const_seeky_busy_in_flight_queues);
++ bfqd->const_seeky_busy_in_flight_queues--;
++ }
++ }
++ if (bfqq->entity.service > bfq_max_budget(bfqd) / 8 ||
++ !BFQQ_SEEKY(bfqq))
++ bfq_update_idle_window(bfqd, bfqq, bic);
++
++ bfq_log_bfqq(bfqd, bfqq,
++ "rq_enqueued: idle_window=%d (seeky %d, mean %llu)",
++ bfq_bfqq_idle_window(bfqq), BFQQ_SEEKY(bfqq),
++ (long long unsigned)bfqq->seek_mean);
++
++ bfqq->last_request_pos = blk_rq_pos(rq) + blk_rq_sectors(rq);
++
++ if (bfqq == bfqd->in_service_queue && bfq_bfqq_wait_request(bfqq)) {
++ int small_req = bfqq->queued[rq_is_sync(rq)] == 1 &&
++ blk_rq_sectors(rq) < 32;
++ int budget_timeout = bfq_bfqq_budget_timeout(bfqq);
++
++ /*
++ * There is just this request queued: if the request
++ * is small and the queue is not to be expired, then
++ * just exit.
++ *
++ * In this way, if the disk is being idled to wait for
++ * a new request from the in-service queue, we avoid
++ * unplugging the device and committing the disk to serve
++ * just a small request. On the contrary, we wait for
++ * the block layer to decide when to unplug the device:
++ * hopefully, new requests will be merged to this one
++ * quickly, then the device will be unplugged and
++ * larger requests will be dispatched.
++ */
++ if (small_req && !budget_timeout)
++ return;
++
++ /*
++ * A large enough request arrived, or the queue is to
++ * be expired: in both cases disk idling is to be
++ * stopped, so clear wait_request flag and reset
++ * timer.
++ */
++ bfq_clear_bfqq_wait_request(bfqq);
++ del_timer(&bfqd->idle_slice_timer);
++
++ /*
++ * The queue is not empty, because a new request just
++ * arrived. Hence we can safely expire the queue, in
++ * case of budget timeout, without risking that the
++ * timestamps of the queue are not updated correctly.
++ * See [1] for more details.
++ */
++ if (budget_timeout)
++ bfq_bfqq_expire(bfqd, bfqq, 0, BFQ_BFQQ_BUDGET_TIMEOUT);
++
++ /*
++ * Let the request rip immediately, or let a new queue be
++ * selected if bfqq has just been expired.
++ */
++ __blk_run_queue(bfqd->queue);
++ }
++}
++
++static void bfq_insert_request(struct request_queue *q, struct request *rq)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++ struct bfq_queue *bfqq = RQ_BFQQ(rq);
++
++ assert_spin_locked(bfqd->queue->queue_lock);
++
++ bfq_add_request(rq);
++
++ rq->fifo_time = jiffies + bfqd->bfq_fifo_expire[rq_is_sync(rq)];
++ list_add_tail(&rq->queuelist, &bfqq->fifo);
++
++ bfq_rq_enqueued(bfqd, bfqq, rq);
++}
++
++static void bfq_update_hw_tag(struct bfq_data *bfqd)
++{
++ bfqd->max_rq_in_driver = max(bfqd->max_rq_in_driver,
++ bfqd->rq_in_driver);
++
++ if (bfqd->hw_tag == 1)
++ return;
++
++ /*
++ * This sample is valid if the number of outstanding requests
++ * is large enough to allow a queueing behavior. Note that the
++ * sum is not exact, as it's not taking into account deactivated
++ * requests.
++ */
++ if (bfqd->rq_in_driver + bfqd->queued < BFQ_HW_QUEUE_THRESHOLD)
++ return;
++
++ if (bfqd->hw_tag_samples++ < BFQ_HW_QUEUE_SAMPLES)
++ return;
++
++ bfqd->hw_tag = bfqd->max_rq_in_driver > BFQ_HW_QUEUE_THRESHOLD;
++ bfqd->max_rq_in_driver = 0;
++ bfqd->hw_tag_samples = 0;
++}
++
++static void bfq_completed_request(struct request_queue *q, struct request *rq)
++{
++ struct bfq_queue *bfqq = RQ_BFQQ(rq);
++ struct bfq_data *bfqd = bfqq->bfqd;
++ bool sync = bfq_bfqq_sync(bfqq);
++
++ bfq_log_bfqq(bfqd, bfqq, "completed one req with %u sects left (%d)",
++ blk_rq_sectors(rq), sync);
++
++ bfq_update_hw_tag(bfqd);
++
++ BUG_ON(!bfqd->rq_in_driver);
++ BUG_ON(!bfqq->dispatched);
++ bfqd->rq_in_driver--;
++ bfqq->dispatched--;
++
++ if (!bfqq->dispatched && !bfq_bfqq_busy(bfqq)) {
++ bfq_weights_tree_remove(bfqd, &bfqq->entity,
++ &bfqd->queue_weights_tree);
++ if (!blk_queue_nonrot(bfqd->queue)) {
++ BUG_ON(!bfqd->busy_in_flight_queues);
++ bfqd->busy_in_flight_queues--;
++ if (bfq_bfqq_constantly_seeky(bfqq)) {
++ BUG_ON(!bfqd->
++ const_seeky_busy_in_flight_queues);
++ bfqd->const_seeky_busy_in_flight_queues--;
++ }
++ }
++ }
++
++ if (sync) {
++ bfqd->sync_flight--;
++ RQ_BIC(rq)->ttime.last_end_request = jiffies;
++ }
++
++ /*
++ * If we are waiting to discover whether the request pattern of the
++ * task associated with the queue is actually isochronous, and
++ * both requisites for this condition to hold are satisfied, then
++ * compute soft_rt_next_start (see the comments to the function
++ * bfq_bfqq_softrt_next_start()).
++ */
++ if (bfq_bfqq_softrt_update(bfqq) && bfqq->dispatched == 0 &&
++ RB_EMPTY_ROOT(&bfqq->sort_list))
++ bfqq->soft_rt_next_start =
++ bfq_bfqq_softrt_next_start(bfqd, bfqq);
++
++ /*
++ * If this is the in-service queue, check if it needs to be expired,
++ * or if we want to idle in case it has no pending requests.
++ */
++ if (bfqd->in_service_queue == bfqq) {
++ if (bfq_bfqq_budget_new(bfqq))
++ bfq_set_budget_timeout(bfqd);
++
++ if (bfq_bfqq_must_idle(bfqq)) {
++ bfq_arm_slice_timer(bfqd);
++ goto out;
++ } else if (bfq_may_expire_for_budg_timeout(bfqq))
++ bfq_bfqq_expire(bfqd, bfqq, 0, BFQ_BFQQ_BUDGET_TIMEOUT);
++ else if (RB_EMPTY_ROOT(&bfqq->sort_list) &&
++ (bfqq->dispatched == 0 ||
++ !bfq_bfqq_must_not_expire(bfqq)))
++ bfq_bfqq_expire(bfqd, bfqq, 0,
++ BFQ_BFQQ_NO_MORE_REQUESTS);
++ }
++
++ if (!bfqd->rq_in_driver)
++ bfq_schedule_dispatch(bfqd);
++
++out:
++ return;
++}
++
++static inline int __bfq_may_queue(struct bfq_queue *bfqq)
++{
++ if (bfq_bfqq_wait_request(bfqq) && bfq_bfqq_must_alloc(bfqq)) {
++ bfq_clear_bfqq_must_alloc(bfqq);
++ return ELV_MQUEUE_MUST;
++ }
++
++ return ELV_MQUEUE_MAY;
++}
++
++static int bfq_may_queue(struct request_queue *q, int rw)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++ struct task_struct *tsk = current;
++ struct bfq_io_cq *bic;
++ struct bfq_queue *bfqq;
++
++ /*
++ * Don't force setup of a queue from here, as a call to may_queue
++ * does not necessarily imply that a request actually will be
++ * queued. So just lookup a possibly existing queue, or return
++ * 'may queue' if that fails.
++ */
++ bic = bfq_bic_lookup(bfqd, tsk->io_context);
++ if (bic == NULL)
++ return ELV_MQUEUE_MAY;
++
++ bfqq = bic_to_bfqq(bic, rw_is_sync(rw));
++ if (bfqq != NULL)
++ return __bfq_may_queue(bfqq);
++
++ return ELV_MQUEUE_MAY;
++}
++
++/*
++ * Queue lock held here.
++ */
++static void bfq_put_request(struct request *rq)
++{
++ struct bfq_queue *bfqq = RQ_BFQQ(rq);
++
++ if (bfqq != NULL) {
++ const int rw = rq_data_dir(rq);
++
++ BUG_ON(!bfqq->allocated[rw]);
++ bfqq->allocated[rw]--;
++
++ rq->elv.priv[0] = NULL;
++ rq->elv.priv[1] = NULL;
++
++ bfq_log_bfqq(bfqq->bfqd, bfqq, "put_request %p, %d",
++ bfqq, atomic_read(&bfqq->ref));
++ bfq_put_queue(bfqq);
++ }
++}
++
++static struct bfq_queue *
++bfq_merge_bfqqs(struct bfq_data *bfqd, struct bfq_io_cq *bic,
++ struct bfq_queue *bfqq)
++{
++ bfq_log_bfqq(bfqd, bfqq, "merging with queue %lu",
++ (long unsigned)bfqq->new_bfqq->pid);
++ bic_set_bfqq(bic, bfqq->new_bfqq, 1);
++ bfq_mark_bfqq_coop(bfqq->new_bfqq);
++ bfq_put_queue(bfqq);
++ return bic_to_bfqq(bic, 1);
++}
++
++/*
++ * Returns NULL if a new bfqq should be allocated, or the old bfqq if this
++ * was the last process referring to said bfqq.
++ */
++static struct bfq_queue *
++bfq_split_bfqq(struct bfq_io_cq *bic, struct bfq_queue *bfqq)
++{
++ bfq_log_bfqq(bfqq->bfqd, bfqq, "splitting queue");
++ if (bfqq_process_refs(bfqq) == 1) {
++ bfqq->pid = current->pid;
++ bfq_clear_bfqq_coop(bfqq);
++ bfq_clear_bfqq_split_coop(bfqq);
++ return bfqq;
++ }
++
++ bic_set_bfqq(bic, NULL, 1);
++
++ bfq_put_cooperator(bfqq);
++
++ bfq_put_queue(bfqq);
++ return NULL;
++}
++
++/*
++ * Allocate bfq data structures associated with this request.
++ */
++static int bfq_set_request(struct request_queue *q, struct request *rq,
++ struct bio *bio, gfp_t gfp_mask)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++ struct bfq_io_cq *bic = icq_to_bic(rq->elv.icq);
++ const int rw = rq_data_dir(rq);
++ const int is_sync = rq_is_sync(rq);
++ struct bfq_queue *bfqq;
++ struct bfq_group *bfqg;
++ unsigned long flags;
++
++ might_sleep_if(gfp_mask & __GFP_WAIT);
++
++ bfq_check_ioprio_change(bic);
++
++ spin_lock_irqsave(q->queue_lock, flags);
++
++ if (bic == NULL)
++ goto queue_fail;
++
++ bfqg = bfq_bic_update_cgroup(bic);
++
++new_queue:
++ bfqq = bic_to_bfqq(bic, is_sync);
++ if (bfqq == NULL || bfqq == &bfqd->oom_bfqq) {
++ bfqq = bfq_get_queue(bfqd, bfqg, is_sync, bic, gfp_mask);
++ bic_set_bfqq(bic, bfqq, is_sync);
++ } else {
++ /*
++ * If the queue was seeky for too long, break it apart.
++ */
++ if (bfq_bfqq_coop(bfqq) && bfq_bfqq_split_coop(bfqq)) {
++ bfq_log_bfqq(bfqd, bfqq, "breaking apart bfqq");
++ bfqq = bfq_split_bfqq(bic, bfqq);
++ if (!bfqq)
++ goto new_queue;
++ }
++
++ /*
++ * Check to see if this queue is scheduled to merge with
++ * another closely cooperating queue. The merging of queues
++ * happens here as it must be done in process context.
++ * The reference on new_bfqq was taken in merge_bfqqs.
++ */
++ if (bfqq->new_bfqq != NULL)
++ bfqq = bfq_merge_bfqqs(bfqd, bic, bfqq);
++ }
++
++ bfqq->allocated[rw]++;
++ atomic_inc(&bfqq->ref);
++ bfq_log_bfqq(bfqd, bfqq, "set_request: bfqq %p, %d", bfqq,
++ atomic_read(&bfqq->ref));
++
++ rq->elv.priv[0] = bic;
++ rq->elv.priv[1] = bfqq;
++
++ spin_unlock_irqrestore(q->queue_lock, flags);
++
++ return 0;
++
++queue_fail:
++ bfq_schedule_dispatch(bfqd);
++ spin_unlock_irqrestore(q->queue_lock, flags);
++
++ return 1;
++}
++
++static void bfq_kick_queue(struct work_struct *work)
++{
++ struct bfq_data *bfqd =
++ container_of(work, struct bfq_data, unplug_work);
++ struct request_queue *q = bfqd->queue;
++
++ spin_lock_irq(q->queue_lock);
++ __blk_run_queue(q);
++ spin_unlock_irq(q->queue_lock);
++}
++
++/*
++ * Handler of the expiration of the timer running if the in-service queue
++ * is idling inside its time slice.
++ */
++static void bfq_idle_slice_timer(unsigned long data)
++{
++ struct bfq_data *bfqd = (struct bfq_data *)data;
++ struct bfq_queue *bfqq;
++ unsigned long flags;
++ enum bfqq_expiration reason;
++
++ spin_lock_irqsave(bfqd->queue->queue_lock, flags);
++
++ bfqq = bfqd->in_service_queue;
++ /*
++ * Theoretical race here: the in-service queue can be NULL or
++ * different from the queue that was idling if the timer handler
++ * spins on the queue_lock and a new request arrives for the
++ * current queue and there is a full dispatch cycle that changes
++ * the in-service queue. This can hardly happen, but in the worst
++ * case we just expire a queue too early.
++ */
++ if (bfqq != NULL) {
++ bfq_log_bfqq(bfqd, bfqq, "slice_timer expired");
++ if (bfq_bfqq_budget_timeout(bfqq))
++ /*
++ * Also here the queue can be safely expired
++ * for budget timeout without wasting
++ * guarantees
++ */
++ reason = BFQ_BFQQ_BUDGET_TIMEOUT;
++ else if (bfqq->queued[0] == 0 && bfqq->queued[1] == 0)
++ /*
++ * The queue may not be empty upon timer expiration,
++ * because we may not disable the timer when the
++ * first request of the in-service queue arrives
++ * during disk idling.
++ */
++ reason = BFQ_BFQQ_TOO_IDLE;
++ else
++ goto schedule_dispatch;
++
++ bfq_bfqq_expire(bfqd, bfqq, 1, reason);
++ }
++
++schedule_dispatch:
++ bfq_schedule_dispatch(bfqd);
++
++ spin_unlock_irqrestore(bfqd->queue->queue_lock, flags);
++}
++
++static void bfq_shutdown_timer_wq(struct bfq_data *bfqd)
++{
++ del_timer_sync(&bfqd->idle_slice_timer);
++ cancel_work_sync(&bfqd->unplug_work);
++}
++
++static inline void __bfq_put_async_bfqq(struct bfq_data *bfqd,
++ struct bfq_queue **bfqq_ptr)
++{
++ struct bfq_group *root_group = bfqd->root_group;
++ struct bfq_queue *bfqq = *bfqq_ptr;
++
++ bfq_log(bfqd, "put_async_bfqq: %p", bfqq);
++ if (bfqq != NULL) {
++ bfq_bfqq_move(bfqd, bfqq, &bfqq->entity, root_group);
++ bfq_log_bfqq(bfqd, bfqq, "put_async_bfqq: putting %p, %d",
++ bfqq, atomic_read(&bfqq->ref));
++ bfq_put_queue(bfqq);
++ *bfqq_ptr = NULL;
++ }
++}
++
++/*
++ * Release all the bfqg references to its async queues. If we are
++ * deallocating the group these queues may still contain requests, so
++ * we reparent them to the root cgroup (i.e., the only one that will
++ * exist for sure until all the requests on a device are gone).
++ */
++static void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg)
++{
++ int i, j;
++
++ for (i = 0; i < 2; i++)
++ for (j = 0; j < IOPRIO_BE_NR; j++)
++ __bfq_put_async_bfqq(bfqd, &bfqg->async_bfqq[i][j]);
++
++ __bfq_put_async_bfqq(bfqd, &bfqg->async_idle_bfqq);
++}
++
++static void bfq_exit_queue(struct elevator_queue *e)
++{
++ struct bfq_data *bfqd = e->elevator_data;
++ struct request_queue *q = bfqd->queue;
++ struct bfq_queue *bfqq, *n;
++
++ bfq_shutdown_timer_wq(bfqd);
++
++ spin_lock_irq(q->queue_lock);
++
++ BUG_ON(bfqd->in_service_queue != NULL);
++ list_for_each_entry_safe(bfqq, n, &bfqd->idle_list, bfqq_list)
++ bfq_deactivate_bfqq(bfqd, bfqq, 0);
++
++ bfq_disconnect_groups(bfqd);
++ spin_unlock_irq(q->queue_lock);
++
++ bfq_shutdown_timer_wq(bfqd);
++
++ synchronize_rcu();
++
++ BUG_ON(timer_pending(&bfqd->idle_slice_timer));
++
++ bfq_free_root_group(bfqd);
++ kfree(bfqd);
++}
++
++static int bfq_init_queue(struct request_queue *q, struct elevator_type *e)
++{
++ struct bfq_group *bfqg;
++ struct bfq_data *bfqd;
++ struct elevator_queue *eq;
++
++ eq = elevator_alloc(q, e);
++ if (eq == NULL)
++ return -ENOMEM;
++
++ bfqd = kzalloc_node(sizeof(*bfqd), GFP_KERNEL, q->node);
++ if (bfqd == NULL) {
++ kobject_put(&eq->kobj);
++ return -ENOMEM;
++ }
++ eq->elevator_data = bfqd;
++
++ /*
++ * Our fallback bfqq if bfq_find_alloc_queue() runs into OOM issues.
++ * Grab a permanent reference to it, so that the normal code flow
++ * will not attempt to free it.
++ */
++ bfq_init_bfqq(bfqd, &bfqd->oom_bfqq, NULL, 1, 0);
++ atomic_inc(&bfqd->oom_bfqq.ref);
++ bfqd->oom_bfqq.entity.new_ioprio = BFQ_DEFAULT_QUEUE_IOPRIO;
++ bfqd->oom_bfqq.entity.new_ioprio_class = IOPRIO_CLASS_BE;
++ bfqd->oom_bfqq.entity.new_weight =
++ bfq_ioprio_to_weight(bfqd->oom_bfqq.entity.new_ioprio);
++ /*
++ * Trigger weight initialization, according to ioprio, at the
++ * oom_bfqq's first activation. The oom_bfqq's ioprio and ioprio
++ * class won't be changed any more.
++ */
++ bfqd->oom_bfqq.entity.ioprio_changed = 1;
++
++ bfqd->queue = q;
++
++ spin_lock_irq(q->queue_lock);
++ q->elevator = eq;
++ spin_unlock_irq(q->queue_lock);
++
++ bfqg = bfq_alloc_root_group(bfqd, q->node);
++ if (bfqg == NULL) {
++ kfree(bfqd);
++ kobject_put(&eq->kobj);
++ return -ENOMEM;
++ }
++
++ bfqd->root_group = bfqg;
++ bfq_init_entity(&bfqd->oom_bfqq.entity, bfqd->root_group);
++#ifdef CONFIG_CGROUP_BFQIO
++ bfqd->active_numerous_groups = 0;
++#endif
++
++ init_timer(&bfqd->idle_slice_timer);
++ bfqd->idle_slice_timer.function = bfq_idle_slice_timer;
++ bfqd->idle_slice_timer.data = (unsigned long)bfqd;
++
++ bfqd->rq_pos_tree = RB_ROOT;
++ bfqd->queue_weights_tree = RB_ROOT;
++ bfqd->group_weights_tree = RB_ROOT;
++
++ INIT_WORK(&bfqd->unplug_work, bfq_kick_queue);
++
++ INIT_LIST_HEAD(&bfqd->active_list);
++ INIT_LIST_HEAD(&bfqd->idle_list);
++ INIT_HLIST_HEAD(&bfqd->burst_list);
++
++ bfqd->hw_tag = -1;
++
++ bfqd->bfq_max_budget = bfq_default_max_budget;
++
++ bfqd->bfq_fifo_expire[0] = bfq_fifo_expire[0];
++ bfqd->bfq_fifo_expire[1] = bfq_fifo_expire[1];
++ bfqd->bfq_back_max = bfq_back_max;
++ bfqd->bfq_back_penalty = bfq_back_penalty;
++ bfqd->bfq_slice_idle = bfq_slice_idle;
++ bfqd->bfq_class_idle_last_service = 0;
++ bfqd->bfq_max_budget_async_rq = bfq_max_budget_async_rq;
++ bfqd->bfq_timeout[BLK_RW_ASYNC] = bfq_timeout_async;
++ bfqd->bfq_timeout[BLK_RW_SYNC] = bfq_timeout_sync;
++
++ bfqd->bfq_coop_thresh = 2;
++ bfqd->bfq_failed_cooperations = 7000;
++ bfqd->bfq_requests_within_timer = 120;
++
++ bfqd->bfq_large_burst_thresh = 11;
++ bfqd->bfq_burst_interval = msecs_to_jiffies(500);
++
++ bfqd->low_latency = true;
++
++ bfqd->bfq_wr_coeff = 20;
++ bfqd->bfq_wr_rt_max_time = msecs_to_jiffies(300);
++ bfqd->bfq_wr_max_time = 0;
++ bfqd->bfq_wr_min_idle_time = msecs_to_jiffies(2000);
++ bfqd->bfq_wr_min_inter_arr_async = msecs_to_jiffies(500);
++ bfqd->bfq_wr_max_softrt_rate = 7000; /*
++ * Approximate rate required
++ * to playback or record a
++ * high-definition compressed
++ * video.
++ */
++ bfqd->wr_busy_queues = 0;
++ bfqd->busy_in_flight_queues = 0;
++ bfqd->const_seeky_busy_in_flight_queues = 0;
++
++ /*
++ * Begin by assuming, optimistically, that the device peak rate is
++ * equal to the highest reference rate.
++ */
++ bfqd->RT_prod = R_fast[blk_queue_nonrot(bfqd->queue)] *
++ T_fast[blk_queue_nonrot(bfqd->queue)];
++ bfqd->peak_rate = R_fast[blk_queue_nonrot(bfqd->queue)];
++ bfqd->device_speed = BFQ_BFQD_FAST;
++
++ return 0;
++}
++
++static void bfq_slab_kill(void)
++{
++ if (bfq_pool != NULL)
++ kmem_cache_destroy(bfq_pool);
++}
++
++static int __init bfq_slab_setup(void)
++{
++ bfq_pool = KMEM_CACHE(bfq_queue, 0);
++ if (bfq_pool == NULL)
++ return -ENOMEM;
++ return 0;
++}
++
++static ssize_t bfq_var_show(unsigned int var, char *page)
++{
++ return sprintf(page, "%d\n", var);
++}
++
++static ssize_t bfq_var_store(unsigned long *var, const char *page,
++ size_t count)
++{
++ unsigned long new_val;
++ int ret = kstrtoul(page, 10, &new_val);
++
++ if (ret == 0)
++ *var = new_val;
++
++ return count;
++}
++
++static ssize_t bfq_wr_max_time_show(struct elevator_queue *e, char *page)
++{
++ struct bfq_data *bfqd = e->elevator_data;
++ return sprintf(page, "%d\n", bfqd->bfq_wr_max_time > 0 ?
++ jiffies_to_msecs(bfqd->bfq_wr_max_time) :
++ jiffies_to_msecs(bfq_wr_duration(bfqd)));
++}
++
++static ssize_t bfq_weights_show(struct elevator_queue *e, char *page)
++{
++ struct bfq_queue *bfqq;
++ struct bfq_data *bfqd = e->elevator_data;
++ ssize_t num_char = 0;
++
++ num_char += sprintf(page + num_char, "Tot reqs queued %d\n\n",
++ bfqd->queued);
++
++ spin_lock_irq(bfqd->queue->queue_lock);
++
++ num_char += sprintf(page + num_char, "Active:\n");
++ list_for_each_entry(bfqq, &bfqd->active_list, bfqq_list) {
++ num_char += sprintf(page + num_char,
++ "pid%d: weight %hu, nr_queued %d %d, dur %d/%u\n",
++ bfqq->pid,
++ bfqq->entity.weight,
++ bfqq->queued[0],
++ bfqq->queued[1],
++ jiffies_to_msecs(jiffies - bfqq->last_wr_start_finish),
++ jiffies_to_msecs(bfqq->wr_cur_max_time));
++ }
++
++ num_char += sprintf(page + num_char, "Idle:\n");
++ list_for_each_entry(bfqq, &bfqd->idle_list, bfqq_list) {
++ num_char += sprintf(page + num_char,
++ "pid%d: weight %hu, dur %d/%u\n",
++ bfqq->pid,
++ bfqq->entity.weight,
++ jiffies_to_msecs(jiffies -
++ bfqq->last_wr_start_finish),
++ jiffies_to_msecs(bfqq->wr_cur_max_time));
++ }
++
++ spin_unlock_irq(bfqd->queue->queue_lock);
++
++ return num_char;
++}
++
++#define SHOW_FUNCTION(__FUNC, __VAR, __CONV) \
++static ssize_t __FUNC(struct elevator_queue *e, char *page) \
++{ \
++ struct bfq_data *bfqd = e->elevator_data; \
++ unsigned int __data = __VAR; \
++ if (__CONV) \
++ __data = jiffies_to_msecs(__data); \
++ return bfq_var_show(__data, (page)); \
++}
++SHOW_FUNCTION(bfq_fifo_expire_sync_show, bfqd->bfq_fifo_expire[1], 1);
++SHOW_FUNCTION(bfq_fifo_expire_async_show, bfqd->bfq_fifo_expire[0], 1);
++SHOW_FUNCTION(bfq_back_seek_max_show, bfqd->bfq_back_max, 0);
++SHOW_FUNCTION(bfq_back_seek_penalty_show, bfqd->bfq_back_penalty, 0);
++SHOW_FUNCTION(bfq_slice_idle_show, bfqd->bfq_slice_idle, 1);
++SHOW_FUNCTION(bfq_max_budget_show, bfqd->bfq_user_max_budget, 0);
++SHOW_FUNCTION(bfq_max_budget_async_rq_show,
++ bfqd->bfq_max_budget_async_rq, 0);
++SHOW_FUNCTION(bfq_timeout_sync_show, bfqd->bfq_timeout[BLK_RW_SYNC], 1);
++SHOW_FUNCTION(bfq_timeout_async_show, bfqd->bfq_timeout[BLK_RW_ASYNC], 1);
++SHOW_FUNCTION(bfq_low_latency_show, bfqd->low_latency, 0);
++SHOW_FUNCTION(bfq_wr_coeff_show, bfqd->bfq_wr_coeff, 0);
++SHOW_FUNCTION(bfq_wr_rt_max_time_show, bfqd->bfq_wr_rt_max_time, 1);
++SHOW_FUNCTION(bfq_wr_min_idle_time_show, bfqd->bfq_wr_min_idle_time, 1);
++SHOW_FUNCTION(bfq_wr_min_inter_arr_async_show, bfqd->bfq_wr_min_inter_arr_async,
++ 1);
++SHOW_FUNCTION(bfq_wr_max_softrt_rate_show, bfqd->bfq_wr_max_softrt_rate, 0);
++#undef SHOW_FUNCTION
++
++#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \
++static ssize_t \
++__FUNC(struct elevator_queue *e, const char *page, size_t count) \
++{ \
++ struct bfq_data *bfqd = e->elevator_data; \
++ unsigned long uninitialized_var(__data); \
++ int ret = bfq_var_store(&__data, (page), count); \
++ if (__data < (MIN)) \
++ __data = (MIN); \
++ else if (__data > (MAX)) \
++ __data = (MAX); \
++ if (__CONV) \
++ *(__PTR) = msecs_to_jiffies(__data); \
++ else \
++ *(__PTR) = __data; \
++ return ret; \
++}
++STORE_FUNCTION(bfq_fifo_expire_sync_store, &bfqd->bfq_fifo_expire[1], 1,
++ INT_MAX, 1);
++STORE_FUNCTION(bfq_fifo_expire_async_store, &bfqd->bfq_fifo_expire[0], 1,
++ INT_MAX, 1);
++STORE_FUNCTION(bfq_back_seek_max_store, &bfqd->bfq_back_max, 0, INT_MAX, 0);
++STORE_FUNCTION(bfq_back_seek_penalty_store, &bfqd->bfq_back_penalty, 1,
++ INT_MAX, 0);
++STORE_FUNCTION(bfq_slice_idle_store, &bfqd->bfq_slice_idle, 0, INT_MAX, 1);
++STORE_FUNCTION(bfq_max_budget_async_rq_store, &bfqd->bfq_max_budget_async_rq,
++ 1, INT_MAX, 0);
++STORE_FUNCTION(bfq_timeout_async_store, &bfqd->bfq_timeout[BLK_RW_ASYNC], 0,
++ INT_MAX, 1);
++STORE_FUNCTION(bfq_wr_coeff_store, &bfqd->bfq_wr_coeff, 1, INT_MAX, 0);
++STORE_FUNCTION(bfq_wr_max_time_store, &bfqd->bfq_wr_max_time, 0, INT_MAX, 1);
++STORE_FUNCTION(bfq_wr_rt_max_time_store, &bfqd->bfq_wr_rt_max_time, 0, INT_MAX,
++ 1);
++STORE_FUNCTION(bfq_wr_min_idle_time_store, &bfqd->bfq_wr_min_idle_time, 0,
++ INT_MAX, 1);
++STORE_FUNCTION(bfq_wr_min_inter_arr_async_store,
++ &bfqd->bfq_wr_min_inter_arr_async, 0, INT_MAX, 1);
++STORE_FUNCTION(bfq_wr_max_softrt_rate_store, &bfqd->bfq_wr_max_softrt_rate, 0,
++ INT_MAX, 0);
++#undef STORE_FUNCTION
++
++/* do nothing for the moment */
++static ssize_t bfq_weights_store(struct elevator_queue *e,
++ const char *page, size_t count)
++{
++ return count;
++}
++
++static inline unsigned long bfq_estimated_max_budget(struct bfq_data *bfqd)
++{
++ u64 timeout = jiffies_to_msecs(bfqd->bfq_timeout[BLK_RW_SYNC]);
++
++ if (bfqd->peak_rate_samples >= BFQ_PEAK_RATE_SAMPLES)
++ return bfq_calc_max_budget(bfqd->peak_rate, timeout);
++ else
++ return bfq_default_max_budget;
++}
++
++static ssize_t bfq_max_budget_store(struct elevator_queue *e,
++ const char *page, size_t count)
++{
++ struct bfq_data *bfqd = e->elevator_data;
++ unsigned long uninitialized_var(__data);
++ int ret = bfq_var_store(&__data, (page), count);
++
++ if (__data == 0)
++ bfqd->bfq_max_budget = bfq_estimated_max_budget(bfqd);
++ else {
++ if (__data > INT_MAX)
++ __data = INT_MAX;
++ bfqd->bfq_max_budget = __data;
++ }
++
++ bfqd->bfq_user_max_budget = __data;
++
++ return ret;
++}
++
++static ssize_t bfq_timeout_sync_store(struct elevator_queue *e,
++ const char *page, size_t count)
++{
++ struct bfq_data *bfqd = e->elevator_data;
++ unsigned long uninitialized_var(__data);
++ int ret = bfq_var_store(&__data, (page), count);
++
++ if (__data < 1)
++ __data = 1;
++ else if (__data > INT_MAX)
++ __data = INT_MAX;
++
++ bfqd->bfq_timeout[BLK_RW_SYNC] = msecs_to_jiffies(__data);
++ if (bfqd->bfq_user_max_budget == 0)
++ bfqd->bfq_max_budget = bfq_estimated_max_budget(bfqd);
++
++ return ret;
++}
++
++static ssize_t bfq_low_latency_store(struct elevator_queue *e,
++ const char *page, size_t count)
++{
++ struct bfq_data *bfqd = e->elevator_data;
++ unsigned long uninitialized_var(__data);
++ int ret = bfq_var_store(&__data, (page), count);
++
++ if (__data > 1)
++ __data = 1;
++ if (__data == 0 && bfqd->low_latency != 0)
++ bfq_end_wr(bfqd);
++ bfqd->low_latency = __data;
++
++ return ret;
++}
++
++#define BFQ_ATTR(name) \
++ __ATTR(name, S_IRUGO|S_IWUSR, bfq_##name##_show, bfq_##name##_store)
++
++static struct elv_fs_entry bfq_attrs[] = {
++ BFQ_ATTR(fifo_expire_sync),
++ BFQ_ATTR(fifo_expire_async),
++ BFQ_ATTR(back_seek_max),
++ BFQ_ATTR(back_seek_penalty),
++ BFQ_ATTR(slice_idle),
++ BFQ_ATTR(max_budget),
++ BFQ_ATTR(max_budget_async_rq),
++ BFQ_ATTR(timeout_sync),
++ BFQ_ATTR(timeout_async),
++ BFQ_ATTR(low_latency),
++ BFQ_ATTR(wr_coeff),
++ BFQ_ATTR(wr_max_time),
++ BFQ_ATTR(wr_rt_max_time),
++ BFQ_ATTR(wr_min_idle_time),
++ BFQ_ATTR(wr_min_inter_arr_async),
++ BFQ_ATTR(wr_max_softrt_rate),
++ BFQ_ATTR(weights),
++ __ATTR_NULL
++};
++
++static struct elevator_type iosched_bfq = {
++ .ops = {
++ .elevator_merge_fn = bfq_merge,
++ .elevator_merged_fn = bfq_merged_request,
++ .elevator_merge_req_fn = bfq_merged_requests,
++ .elevator_allow_merge_fn = bfq_allow_merge,
++ .elevator_dispatch_fn = bfq_dispatch_requests,
++ .elevator_add_req_fn = bfq_insert_request,
++ .elevator_activate_req_fn = bfq_activate_request,
++ .elevator_deactivate_req_fn = bfq_deactivate_request,
++ .elevator_completed_req_fn = bfq_completed_request,
++ .elevator_former_req_fn = elv_rb_former_request,
++ .elevator_latter_req_fn = elv_rb_latter_request,
++ .elevator_init_icq_fn = bfq_init_icq,
++ .elevator_exit_icq_fn = bfq_exit_icq,
++ .elevator_set_req_fn = bfq_set_request,
++ .elevator_put_req_fn = bfq_put_request,
++ .elevator_may_queue_fn = bfq_may_queue,
++ .elevator_init_fn = bfq_init_queue,
++ .elevator_exit_fn = bfq_exit_queue,
++ },
++ .icq_size = sizeof(struct bfq_io_cq),
++ .icq_align = __alignof__(struct bfq_io_cq),
++ .elevator_attrs = bfq_attrs,
++ .elevator_name = "bfq",
++ .elevator_owner = THIS_MODULE,
++};
++
++static int __init bfq_init(void)
++{
++ /*
++ * Can be 0 on HZ < 1000 setups.
++ */
++ if (bfq_slice_idle == 0)
++ bfq_slice_idle = 1;
++
++ if (bfq_timeout_async == 0)
++ bfq_timeout_async = 1;
++
++ if (bfq_slab_setup())
++ return -ENOMEM;
++
++ /*
++ * Times to load large popular applications for the typical systems
++ * installed on the reference devices (see the comments before the
++ * definitions of the two arrays).
++ */
++ T_slow[0] = msecs_to_jiffies(2600);
++ T_slow[1] = msecs_to_jiffies(1000);
++ T_fast[0] = msecs_to_jiffies(5500);
++ T_fast[1] = msecs_to_jiffies(2000);
++
++ /*
++ * Thresholds that determine the switch between speed classes (see
++ * the comments before the definition of the array).
++ */
++ device_speed_thresh[0] = (R_fast[0] + R_slow[0]) / 2;
++ device_speed_thresh[1] = (R_fast[1] + R_slow[1]) / 2;
++
++ elv_register(&iosched_bfq);
++ pr_info("BFQ I/O-scheduler: v7r8");
++
++ return 0;
++}
++
++static void __exit bfq_exit(void)
++{
++ elv_unregister(&iosched_bfq);
++ bfq_slab_kill();
++}
++
++module_init(bfq_init);
++module_exit(bfq_exit);
++
++MODULE_AUTHOR("Fabio Checconi, Paolo Valente");
++MODULE_LICENSE("GPL");
+diff --git a/block/bfq-sched.c b/block/bfq-sched.c
+new file mode 100644
+index 0000000..c343099
+--- /dev/null
++++ b/block/bfq-sched.c
+@@ -0,0 +1,1208 @@
++/*
++ * BFQ: Hierarchical B-WF2Q+ scheduler.
++ *
++ * Based on ideas and code from CFQ:
++ * Copyright (C) 2003 Jens Axboe <axboe@kernel.dk>
++ *
++ * Copyright (C) 2008 Fabio Checconi <fabio@gandalf.sssup.it>
++ * Paolo Valente <paolo.valente@unimore.it>
++ *
++ * Copyright (C) 2010 Paolo Valente <paolo.valente@unimore.it>
++ */
++
++#ifdef CONFIG_CGROUP_BFQIO
++#define for_each_entity(entity) \
++ for (; entity != NULL; entity = entity->parent)
++
++#define for_each_entity_safe(entity, parent) \
++ for (; entity && ({ parent = entity->parent; 1; }); entity = parent)
++
++static struct bfq_entity *bfq_lookup_next_entity(struct bfq_sched_data *sd,
++ int extract,
++ struct bfq_data *bfqd);
++
++static inline void bfq_update_budget(struct bfq_entity *next_in_service)
++{
++ struct bfq_entity *bfqg_entity;
++ struct bfq_group *bfqg;
++ struct bfq_sched_data *group_sd;
++
++ BUG_ON(next_in_service == NULL);
++
++ group_sd = next_in_service->sched_data;
++
++ bfqg = container_of(group_sd, struct bfq_group, sched_data);
++ /*
++ * bfq_group's my_entity field is not NULL only if the group
++ * is not the root group. We must not touch the root entity
++ * as it must never become an in-service entity.
++ */
++ bfqg_entity = bfqg->my_entity;
++ if (bfqg_entity != NULL)
++ bfqg_entity->budget = next_in_service->budget;
++}
++
++static int bfq_update_next_in_service(struct bfq_sched_data *sd)
++{
++ struct bfq_entity *next_in_service;
++
++ if (sd->in_service_entity != NULL)
++ /* will update/requeue at the end of service */
++ return 0;
++
++ /*
++ * NOTE: this can be improved in many ways, such as returning
++ * 1 (and thus propagating upwards the update) only when the
++ * budget changes, or caching the bfqq that will be scheduled
++ * next from this subtree. By now we worry more about
++ * correctness than about performance...
++ */
++ next_in_service = bfq_lookup_next_entity(sd, 0, NULL);
++ sd->next_in_service = next_in_service;
++
++ if (next_in_service != NULL)
++ bfq_update_budget(next_in_service);
++
++ return 1;
++}
++
++static inline void bfq_check_next_in_service(struct bfq_sched_data *sd,
++ struct bfq_entity *entity)
++{
++ BUG_ON(sd->next_in_service != entity);
++}
++#else
++#define for_each_entity(entity) \
++ for (; entity != NULL; entity = NULL)
++
++#define for_each_entity_safe(entity, parent) \
++ for (parent = NULL; entity != NULL; entity = parent)
++
++static inline int bfq_update_next_in_service(struct bfq_sched_data *sd)
++{
++ return 0;
++}
++
++static inline void bfq_check_next_in_service(struct bfq_sched_data *sd,
++ struct bfq_entity *entity)
++{
++}
++
++static inline void bfq_update_budget(struct bfq_entity *next_in_service)
++{
++}
++#endif
++
++/*
++ * Shift for timestamp calculations. This actually limits the maximum
++ * service allowed in one timestamp delta (small shift values increase it),
++ * the maximum total weight that can be used for the queues in the system
++ * (big shift values increase it), and the period of virtual time
++ * wraparounds.
++ */
++#define WFQ_SERVICE_SHIFT 22
++
++/**
++ * bfq_gt - compare two timestamps.
++ * @a: first ts.
++ * @b: second ts.
++ *
++ * Return @a > @b, dealing with wrapping correctly.
++ */
++static inline int bfq_gt(u64 a, u64 b)
++{
++ return (s64)(a - b) > 0;
++}
++
++static inline struct bfq_queue *bfq_entity_to_bfqq(struct bfq_entity *entity)
++{
++ struct bfq_queue *bfqq = NULL;
++
++ BUG_ON(entity == NULL);
++
++ if (entity->my_sched_data == NULL)
++ bfqq = container_of(entity, struct bfq_queue, entity);
++
++ return bfqq;
++}
++
++
++/**
++ * bfq_delta - map service into the virtual time domain.
++ * @service: amount of service.
++ * @weight: scale factor (weight of an entity or weight sum).
++ */
++static inline u64 bfq_delta(unsigned long service,
++ unsigned long weight)
++{
++ u64 d = (u64)service << WFQ_SERVICE_SHIFT;
++
++ do_div(d, weight);
++ return d;
++}
++
++/**
++ * bfq_calc_finish - assign the finish time to an entity.
++ * @entity: the entity to act upon.
++ * @service: the service to be charged to the entity.
++ */
++static inline void bfq_calc_finish(struct bfq_entity *entity,
++ unsigned long service)
++{
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++
++ BUG_ON(entity->weight == 0);
++
++ entity->finish = entity->start +
++ bfq_delta(service, entity->weight);
++
++ if (bfqq != NULL) {
++ bfq_log_bfqq(bfqq->bfqd, bfqq,
++ "calc_finish: serv %lu, w %d",
++ service, entity->weight);
++ bfq_log_bfqq(bfqq->bfqd, bfqq,
++ "calc_finish: start %llu, finish %llu, delta %llu",
++ entity->start, entity->finish,
++ bfq_delta(service, entity->weight));
++ }
++}
++
++/**
++ * bfq_entity_of - get an entity from a node.
++ * @node: the node field of the entity.
++ *
++ * Convert a node pointer to the relative entity. This is used only
++ * to simplify the logic of some functions and not as the generic
++ * conversion mechanism because, e.g., in the tree walking functions,
++ * the check for a %NULL value would be redundant.
++ */
++static inline struct bfq_entity *bfq_entity_of(struct rb_node *node)
++{
++ struct bfq_entity *entity = NULL;
++
++ if (node != NULL)
++ entity = rb_entry(node, struct bfq_entity, rb_node);
++
++ return entity;
++}
++
++/**
++ * bfq_extract - remove an entity from a tree.
++ * @root: the tree root.
++ * @entity: the entity to remove.
++ */
++static inline void bfq_extract(struct rb_root *root,
++ struct bfq_entity *entity)
++{
++ BUG_ON(entity->tree != root);
++
++ entity->tree = NULL;
++ rb_erase(&entity->rb_node, root);
++}
++
++/**
++ * bfq_idle_extract - extract an entity from the idle tree.
++ * @st: the service tree of the owning @entity.
++ * @entity: the entity being removed.
++ */
++static void bfq_idle_extract(struct bfq_service_tree *st,
++ struct bfq_entity *entity)
++{
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++ struct rb_node *next;
++
++ BUG_ON(entity->tree != &st->idle);
++
++ if (entity == st->first_idle) {
++ next = rb_next(&entity->rb_node);
++ st->first_idle = bfq_entity_of(next);
++ }
++
++ if (entity == st->last_idle) {
++ next = rb_prev(&entity->rb_node);
++ st->last_idle = bfq_entity_of(next);
++ }
++
++ bfq_extract(&st->idle, entity);
++
++ if (bfqq != NULL)
++ list_del(&bfqq->bfqq_list);
++}
++
++/**
++ * bfq_insert - generic tree insertion.
++ * @root: tree root.
++ * @entity: entity to insert.
++ *
++ * This is used for the idle and the active tree, since they are both
++ * ordered by finish time.
++ */
++static void bfq_insert(struct rb_root *root, struct bfq_entity *entity)
++{
++ struct bfq_entity *entry;
++ struct rb_node **node = &root->rb_node;
++ struct rb_node *parent = NULL;
++
++ BUG_ON(entity->tree != NULL);
++
++ while (*node != NULL) {
++ parent = *node;
++ entry = rb_entry(parent, struct bfq_entity, rb_node);
++
++ if (bfq_gt(entry->finish, entity->finish))
++ node = &parent->rb_left;
++ else
++ node = &parent->rb_right;
++ }
++
++ rb_link_node(&entity->rb_node, parent, node);
++ rb_insert_color(&entity->rb_node, root);
++
++ entity->tree = root;
++}
++
++/**
++ * bfq_update_min - update the min_start field of a entity.
++ * @entity: the entity to update.
++ * @node: one of its children.
++ *
++ * This function is called when @entity may store an invalid value for
++ * min_start due to updates to the active tree. The function assumes
++ * that the subtree rooted at @node (which may be its left or its right
++ * child) has a valid min_start value.
++ */
++static inline void bfq_update_min(struct bfq_entity *entity,
++ struct rb_node *node)
++{
++ struct bfq_entity *child;
++
++ if (node != NULL) {
++ child = rb_entry(node, struct bfq_entity, rb_node);
++ if (bfq_gt(entity->min_start, child->min_start))
++ entity->min_start = child->min_start;
++ }
++}
++
++/**
++ * bfq_update_active_node - recalculate min_start.
++ * @node: the node to update.
++ *
++ * @node may have changed position or one of its children may have moved,
++ * this function updates its min_start value. The left and right subtrees
++ * are assumed to hold a correct min_start value.
++ */
++static inline void bfq_update_active_node(struct rb_node *node)
++{
++ struct bfq_entity *entity = rb_entry(node, struct bfq_entity, rb_node);
++
++ entity->min_start = entity->start;
++ bfq_update_min(entity, node->rb_right);
++ bfq_update_min(entity, node->rb_left);
++}
++
++/**
++ * bfq_update_active_tree - update min_start for the whole active tree.
++ * @node: the starting node.
++ *
++ * @node must be the deepest modified node after an update. This function
++ * updates its min_start using the values held by its children, assuming
++ * that they did not change, and then updates all the nodes that may have
++ * changed in the path to the root. The only nodes that may have changed
++ * are the ones in the path or their siblings.
++ */
++static void bfq_update_active_tree(struct rb_node *node)
++{
++ struct rb_node *parent;
++
++up:
++ bfq_update_active_node(node);
++
++ parent = rb_parent(node);
++ if (parent == NULL)
++ return;
++
++ if (node == parent->rb_left && parent->rb_right != NULL)
++ bfq_update_active_node(parent->rb_right);
++ else if (parent->rb_left != NULL)
++ bfq_update_active_node(parent->rb_left);
++
++ node = parent;
++ goto up;
++}
++
++static void bfq_weights_tree_add(struct bfq_data *bfqd,
++ struct bfq_entity *entity,
++ struct rb_root *root);
++
++static void bfq_weights_tree_remove(struct bfq_data *bfqd,
++ struct bfq_entity *entity,
++ struct rb_root *root);
++
++
++/**
++ * bfq_active_insert - insert an entity in the active tree of its
++ * group/device.
++ * @st: the service tree of the entity.
++ * @entity: the entity being inserted.
++ *
++ * The active tree is ordered by finish time, but an extra key is kept
++ * per each node, containing the minimum value for the start times of
++ * its children (and the node itself), so it's possible to search for
++ * the eligible node with the lowest finish time in logarithmic time.
++ */
++static void bfq_active_insert(struct bfq_service_tree *st,
++ struct bfq_entity *entity)
++{
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++ struct rb_node *node = &entity->rb_node;
++#ifdef CONFIG_CGROUP_BFQIO
++ struct bfq_sched_data *sd = NULL;
++ struct bfq_group *bfqg = NULL;
++ struct bfq_data *bfqd = NULL;
++#endif
++
++ bfq_insert(&st->active, entity);
++
++ if (node->rb_left != NULL)
++ node = node->rb_left;
++ else if (node->rb_right != NULL)
++ node = node->rb_right;
++
++ bfq_update_active_tree(node);
++
++#ifdef CONFIG_CGROUP_BFQIO
++ sd = entity->sched_data;
++ bfqg = container_of(sd, struct bfq_group, sched_data);
++ BUG_ON(!bfqg);
++ bfqd = (struct bfq_data *)bfqg->bfqd;
++#endif
++ if (bfqq != NULL)
++ list_add(&bfqq->bfqq_list, &bfqq->bfqd->active_list);
++#ifdef CONFIG_CGROUP_BFQIO
++ else { /* bfq_group */
++ BUG_ON(!bfqd);
++ bfq_weights_tree_add(bfqd, entity, &bfqd->group_weights_tree);
++ }
++ if (bfqg != bfqd->root_group) {
++ BUG_ON(!bfqg);
++ BUG_ON(!bfqd);
++ bfqg->active_entities++;
++ if (bfqg->active_entities == 2)
++ bfqd->active_numerous_groups++;
++ }
++#endif
++}
++
++/**
++ * bfq_ioprio_to_weight - calc a weight from an ioprio.
++ * @ioprio: the ioprio value to convert.
++ */
++static inline unsigned short bfq_ioprio_to_weight(int ioprio)
++{
++ BUG_ON(ioprio < 0 || ioprio >= IOPRIO_BE_NR);
++ return IOPRIO_BE_NR - ioprio;
++}
++
++/**
++ * bfq_weight_to_ioprio - calc an ioprio from a weight.
++ * @weight: the weight value to convert.
++ *
++ * To preserve as mush as possible the old only-ioprio user interface,
++ * 0 is used as an escape ioprio value for weights (numerically) equal or
++ * larger than IOPRIO_BE_NR
++ */
++static inline unsigned short bfq_weight_to_ioprio(int weight)
++{
++ BUG_ON(weight < BFQ_MIN_WEIGHT || weight > BFQ_MAX_WEIGHT);
++ return IOPRIO_BE_NR - weight < 0 ? 0 : IOPRIO_BE_NR - weight;
++}
++
++static inline void bfq_get_entity(struct bfq_entity *entity)
++{
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++
++ if (bfqq != NULL) {
++ atomic_inc(&bfqq->ref);
++ bfq_log_bfqq(bfqq->bfqd, bfqq, "get_entity: %p %d",
++ bfqq, atomic_read(&bfqq->ref));
++ }
++}
++
++/**
++ * bfq_find_deepest - find the deepest node that an extraction can modify.
++ * @node: the node being removed.
++ *
++ * Do the first step of an extraction in an rb tree, looking for the
++ * node that will replace @node, and returning the deepest node that
++ * the following modifications to the tree can touch. If @node is the
++ * last node in the tree return %NULL.
++ */
++static struct rb_node *bfq_find_deepest(struct rb_node *node)
++{
++ struct rb_node *deepest;
++
++ if (node->rb_right == NULL && node->rb_left == NULL)
++ deepest = rb_parent(node);
++ else if (node->rb_right == NULL)
++ deepest = node->rb_left;
++ else if (node->rb_left == NULL)
++ deepest = node->rb_right;
++ else {
++ deepest = rb_next(node);
++ if (deepest->rb_right != NULL)
++ deepest = deepest->rb_right;
++ else if (rb_parent(deepest) != node)
++ deepest = rb_parent(deepest);
++ }
++
++ return deepest;
++}
++
++/**
++ * bfq_active_extract - remove an entity from the active tree.
++ * @st: the service_tree containing the tree.
++ * @entity: the entity being removed.
++ */
++static void bfq_active_extract(struct bfq_service_tree *st,
++ struct bfq_entity *entity)
++{
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++ struct rb_node *node;
++#ifdef CONFIG_CGROUP_BFQIO
++ struct bfq_sched_data *sd = NULL;
++ struct bfq_group *bfqg = NULL;
++ struct bfq_data *bfqd = NULL;
++#endif
++
++ node = bfq_find_deepest(&entity->rb_node);
++ bfq_extract(&st->active, entity);
++
++ if (node != NULL)
++ bfq_update_active_tree(node);
++
++#ifdef CONFIG_CGROUP_BFQIO
++ sd = entity->sched_data;
++ bfqg = container_of(sd, struct bfq_group, sched_data);
++ BUG_ON(!bfqg);
++ bfqd = (struct bfq_data *)bfqg->bfqd;
++#endif
++ if (bfqq != NULL)
++ list_del(&bfqq->bfqq_list);
++#ifdef CONFIG_CGROUP_BFQIO
++ else { /* bfq_group */
++ BUG_ON(!bfqd);
++ bfq_weights_tree_remove(bfqd, entity,
++ &bfqd->group_weights_tree);
++ }
++ if (bfqg != bfqd->root_group) {
++ BUG_ON(!bfqg);
++ BUG_ON(!bfqd);
++ BUG_ON(!bfqg->active_entities);
++ bfqg->active_entities--;
++ if (bfqg->active_entities == 1) {
++ BUG_ON(!bfqd->active_numerous_groups);
++ bfqd->active_numerous_groups--;
++ }
++ }
++#endif
++}
++
++/**
++ * bfq_idle_insert - insert an entity into the idle tree.
++ * @st: the service tree containing the tree.
++ * @entity: the entity to insert.
++ */
++static void bfq_idle_insert(struct bfq_service_tree *st,
++ struct bfq_entity *entity)
++{
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++ struct bfq_entity *first_idle = st->first_idle;
++ struct bfq_entity *last_idle = st->last_idle;
++
++ if (first_idle == NULL || bfq_gt(first_idle->finish, entity->finish))
++ st->first_idle = entity;
++ if (last_idle == NULL || bfq_gt(entity->finish, last_idle->finish))
++ st->last_idle = entity;
++
++ bfq_insert(&st->idle, entity);
++
++ if (bfqq != NULL)
++ list_add(&bfqq->bfqq_list, &bfqq->bfqd->idle_list);
++}
++
++/**
++ * bfq_forget_entity - remove an entity from the wfq trees.
++ * @st: the service tree.
++ * @entity: the entity being removed.
++ *
++ * Update the device status and forget everything about @entity, putting
++ * the device reference to it, if it is a queue. Entities belonging to
++ * groups are not refcounted.
++ */
++static void bfq_forget_entity(struct bfq_service_tree *st,
++ struct bfq_entity *entity)
++{
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++ struct bfq_sched_data *sd;
++
++ BUG_ON(!entity->on_st);
++
++ entity->on_st = 0;
++ st->wsum -= entity->weight;
++ if (bfqq != NULL) {
++ sd = entity->sched_data;
++ bfq_log_bfqq(bfqq->bfqd, bfqq, "forget_entity: %p %d",
++ bfqq, atomic_read(&bfqq->ref));
++ bfq_put_queue(bfqq);
++ }
++}
++
++/**
++ * bfq_put_idle_entity - release the idle tree ref of an entity.
++ * @st: service tree for the entity.
++ * @entity: the entity being released.
++ */
++static void bfq_put_idle_entity(struct bfq_service_tree *st,
++ struct bfq_entity *entity)
++{
++ bfq_idle_extract(st, entity);
++ bfq_forget_entity(st, entity);
++}
++
++/**
++ * bfq_forget_idle - update the idle tree if necessary.
++ * @st: the service tree to act upon.
++ *
++ * To preserve the global O(log N) complexity we only remove one entry here;
++ * as the idle tree will not grow indefinitely this can be done safely.
++ */
++static void bfq_forget_idle(struct bfq_service_tree *st)
++{
++ struct bfq_entity *first_idle = st->first_idle;
++ struct bfq_entity *last_idle = st->last_idle;
++
++ if (RB_EMPTY_ROOT(&st->active) && last_idle != NULL &&
++ !bfq_gt(last_idle->finish, st->vtime)) {
++ /*
++ * Forget the whole idle tree, increasing the vtime past
++ * the last finish time of idle entities.
++ */
++ st->vtime = last_idle->finish;
++ }
++
++ if (first_idle != NULL && !bfq_gt(first_idle->finish, st->vtime))
++ bfq_put_idle_entity(st, first_idle);
++}
++
++static struct bfq_service_tree *
++__bfq_entity_update_weight_prio(struct bfq_service_tree *old_st,
++ struct bfq_entity *entity)
++{
++ struct bfq_service_tree *new_st = old_st;
++
++ if (entity->ioprio_changed) {
++ struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity);
++ unsigned short prev_weight, new_weight;
++ struct bfq_data *bfqd = NULL;
++ struct rb_root *root;
++#ifdef CONFIG_CGROUP_BFQIO
++ struct bfq_sched_data *sd;
++ struct bfq_group *bfqg;
++#endif
++
++ if (bfqq != NULL)
++ bfqd = bfqq->bfqd;
++#ifdef CONFIG_CGROUP_BFQIO
++ else {
++ sd = entity->my_sched_data;
++ bfqg = container_of(sd, struct bfq_group, sched_data);
++ BUG_ON(!bfqg);
++ bfqd = (struct bfq_data *)bfqg->bfqd;
++ BUG_ON(!bfqd);
++ }
++#endif
++
++ BUG_ON(old_st->wsum < entity->weight);
++ old_st->wsum -= entity->weight;
++
++ if (entity->new_weight != entity->orig_weight) {
++ if (entity->new_weight < BFQ_MIN_WEIGHT ||
++ entity->new_weight > BFQ_MAX_WEIGHT) {
++ printk(KERN_CRIT "update_weight_prio: "
++ "new_weight %d\n",
++ entity->new_weight);
++ BUG();
++ }
++ entity->orig_weight = entity->new_weight;
++ entity->ioprio =
++ bfq_weight_to_ioprio(entity->orig_weight);
++ }
++
++ entity->ioprio_class = entity->new_ioprio_class;
++ entity->ioprio_changed = 0;
++
++ /*
++ * NOTE: here we may be changing the weight too early,
++ * this will cause unfairness. The correct approach
++ * would have required additional complexity to defer
++ * weight changes to the proper time instants (i.e.,
++ * when entity->finish <= old_st->vtime).
++ */
++ new_st = bfq_entity_service_tree(entity);
++
++ prev_weight = entity->weight;
++ new_weight = entity->orig_weight *
++ (bfqq != NULL ? bfqq->wr_coeff : 1);
++ /*
++ * If the weight of the entity changes, remove the entity
++ * from its old weight counter (if there is a counter
++ * associated with the entity), and add it to the counter
++ * associated with its new weight.
++ */
++ if (prev_weight != new_weight) {
++ root = bfqq ? &bfqd->queue_weights_tree :
++ &bfqd->group_weights_tree;
++ bfq_weights_tree_remove(bfqd, entity, root);
++ }
++ entity->weight = new_weight;
++ /*
++ * Add the entity to its weights tree only if it is
++ * not associated with a weight-raised queue.
++ */
++ if (prev_weight != new_weight &&
++ (bfqq ? bfqq->wr_coeff == 1 : 1))
++ /* If we get here, root has been initialized. */
++ bfq_weights_tree_add(bfqd, entity, root);
++
++ new_st->wsum += entity->weight;
++
++ if (new_st != old_st)
++ entity->start = new_st->vtime;
++ }
++
++ return new_st;
++}
++
++/**
++ * bfq_bfqq_served - update the scheduler status after selection for
++ * service.
++ * @bfqq: the queue being served.
++ * @served: bytes to transfer.
++ *
++ * NOTE: this can be optimized, as the timestamps of upper level entities
++ * are synchronized every time a new bfqq is selected for service. By now,
++ * we keep it to better check consistency.
++ */
++static void bfq_bfqq_served(struct bfq_queue *bfqq, unsigned long served)
++{
++ struct bfq_entity *entity = &bfqq->entity;
++ struct bfq_service_tree *st;
++
++ for_each_entity(entity) {
++ st = bfq_entity_service_tree(entity);
++
++ entity->service += served;
++ BUG_ON(entity->service > entity->budget);
++ BUG_ON(st->wsum == 0);
++
++ st->vtime += bfq_delta(served, st->wsum);
++ bfq_forget_idle(st);
++ }
++ bfq_log_bfqq(bfqq->bfqd, bfqq, "bfqq_served %lu secs", served);
++}
++
++/**
++ * bfq_bfqq_charge_full_budget - set the service to the entity budget.
++ * @bfqq: the queue that needs a service update.
++ *
++ * When it's not possible to be fair in the service domain, because
++ * a queue is not consuming its budget fast enough (the meaning of
++ * fast depends on the timeout parameter), we charge it a full
++ * budget. In this way we should obtain a sort of time-domain
++ * fairness among all the seeky/slow queues.
++ */
++static inline void bfq_bfqq_charge_full_budget(struct bfq_queue *bfqq)
++{
++ struct bfq_entity *entity = &bfqq->entity;
++
++ bfq_log_bfqq(bfqq->bfqd, bfqq, "charge_full_budget");
++
++ bfq_bfqq_served(bfqq, entity->budget - entity->service);
++}
++
++/**
++ * __bfq_activate_entity - activate an entity.
++ * @entity: the entity being activated.
++ *
++ * Called whenever an entity is activated, i.e., it is not active and one
++ * of its children receives a new request, or has to be reactivated due to
++ * budget exhaustion. It uses the current budget of the entity (and the
++ * service received if @entity is active) of the queue to calculate its
++ * timestamps.
++ */
++static void __bfq_activate_entity(struct bfq_entity *entity)
++{
++ struct bfq_sched_data *sd = entity->sched_data;
++ struct bfq_service_tree *st = bfq_entity_service_tree(entity);
++
++ if (entity == sd->in_service_entity) {
++ BUG_ON(entity->tree != NULL);
++ /*
++ * If we are requeueing the current entity we have
++ * to take care of not charging to it service it has
++ * not received.
++ */
++ bfq_calc_finish(entity, entity->service);
++ entity->start = entity->finish;
++ sd->in_service_entity = NULL;
++ } else if (entity->tree == &st->active) {
++ /*
++ * Requeueing an entity due to a change of some
++ * next_in_service entity below it. We reuse the
++ * old start time.
++ */
++ bfq_active_extract(st, entity);
++ } else if (entity->tree == &st->idle) {
++ /*
++ * Must be on the idle tree, bfq_idle_extract() will
++ * check for that.
++ */
++ bfq_idle_extract(st, entity);
++ entity->start = bfq_gt(st->vtime, entity->finish) ?
++ st->vtime : entity->finish;
++ } else {
++ /*
++ * The finish time of the entity may be invalid, and
++ * it is in the past for sure, otherwise the queue
++ * would have been on the idle tree.
++ */
++ entity->start = st->vtime;
++ st->wsum += entity->weight;
++ bfq_get_entity(entity);
++
++ BUG_ON(entity->on_st);
++ entity->on_st = 1;
++ }
++
++ st = __bfq_entity_update_weight_prio(st, entity);
++ bfq_calc_finish(entity, entity->budget);
++ bfq_active_insert(st, entity);
++}
++
++/**
++ * bfq_activate_entity - activate an entity and its ancestors if necessary.
++ * @entity: the entity to activate.
++ *
++ * Activate @entity and all the entities on the path from it to the root.
++ */
++static void bfq_activate_entity(struct bfq_entity *entity)
++{
++ struct bfq_sched_data *sd;
++
++ for_each_entity(entity) {
++ __bfq_activate_entity(entity);
++
++ sd = entity->sched_data;
++ if (!bfq_update_next_in_service(sd))
++ /*
++ * No need to propagate the activation to the
++ * upper entities, as they will be updated when
++ * the in-service entity is rescheduled.
++ */
++ break;
++ }
++}
++
++/**
++ * __bfq_deactivate_entity - deactivate an entity from its service tree.
++ * @entity: the entity to deactivate.
++ * @requeue: if false, the entity will not be put into the idle tree.
++ *
++ * Deactivate an entity, independently from its previous state. If the
++ * entity was not on a service tree just return, otherwise if it is on
++ * any scheduler tree, extract it from that tree, and if necessary
++ * and if the caller did not specify @requeue, put it on the idle tree.
++ *
++ * Return %1 if the caller should update the entity hierarchy, i.e.,
++ * if the entity was in service or if it was the next_in_service for
++ * its sched_data; return %0 otherwise.
++ */
++static int __bfq_deactivate_entity(struct bfq_entity *entity, int requeue)
++{
++ struct bfq_sched_data *sd = entity->sched_data;
++ struct bfq_service_tree *st = bfq_entity_service_tree(entity);
++ int was_in_service = entity == sd->in_service_entity;
++ int ret = 0;
++
++ if (!entity->on_st)
++ return 0;
++
++ BUG_ON(was_in_service && entity->tree != NULL);
++
++ if (was_in_service) {
++ bfq_calc_finish(entity, entity->service);
++ sd->in_service_entity = NULL;
++ } else if (entity->tree == &st->active)
++ bfq_active_extract(st, entity);
++ else if (entity->tree == &st->idle)
++ bfq_idle_extract(st, entity);
++ else if (entity->tree != NULL)
++ BUG();
++
++ if (was_in_service || sd->next_in_service == entity)
++ ret = bfq_update_next_in_service(sd);
++
++ if (!requeue || !bfq_gt(entity->finish, st->vtime))
++ bfq_forget_entity(st, entity);
++ else
++ bfq_idle_insert(st, entity);
++
++ BUG_ON(sd->in_service_entity == entity);
++ BUG_ON(sd->next_in_service == entity);
++
++ return ret;
++}
++
++/**
++ * bfq_deactivate_entity - deactivate an entity.
++ * @entity: the entity to deactivate.
++ * @requeue: true if the entity can be put on the idle tree
++ */
++static void bfq_deactivate_entity(struct bfq_entity *entity, int requeue)
++{
++ struct bfq_sched_data *sd;
++ struct bfq_entity *parent;
++
++ for_each_entity_safe(entity, parent) {
++ sd = entity->sched_data;
++
++ if (!__bfq_deactivate_entity(entity, requeue))
++ /*
++ * The parent entity is still backlogged, and
++ * we don't need to update it as it is still
++ * in service.
++ */
++ break;
++
++ if (sd->next_in_service != NULL)
++ /*
++ * The parent entity is still backlogged and
++ * the budgets on the path towards the root
++ * need to be updated.
++ */
++ goto update;
++
++ /*
++ * If we reach there the parent is no more backlogged and
++ * we want to propagate the dequeue upwards.
++ */
++ requeue = 1;
++ }
++
++ return;
++
++update:
++ entity = parent;
++ for_each_entity(entity) {
++ __bfq_activate_entity(entity);
++
++ sd = entity->sched_data;
++ if (!bfq_update_next_in_service(sd))
++ break;
++ }
++}
++
++/**
++ * bfq_update_vtime - update vtime if necessary.
++ * @st: the service tree to act upon.
++ *
++ * If necessary update the service tree vtime to have at least one
++ * eligible entity, skipping to its start time. Assumes that the
++ * active tree of the device is not empty.
++ *
++ * NOTE: this hierarchical implementation updates vtimes quite often,
++ * we may end up with reactivated processes getting timestamps after a
++ * vtime skip done because we needed a ->first_active entity on some
++ * intermediate node.
++ */
++static void bfq_update_vtime(struct bfq_service_tree *st)
++{
++ struct bfq_entity *entry;
++ struct rb_node *node = st->active.rb_node;
++
++ entry = rb_entry(node, struct bfq_entity, rb_node);
++ if (bfq_gt(entry->min_start, st->vtime)) {
++ st->vtime = entry->min_start;
++ bfq_forget_idle(st);
++ }
++}
++
++/**
++ * bfq_first_active_entity - find the eligible entity with
++ * the smallest finish time
++ * @st: the service tree to select from.
++ *
++ * This function searches the first schedulable entity, starting from the
++ * root of the tree and going on the left every time on this side there is
++ * a subtree with at least one eligible (start >= vtime) entity. The path on
++ * the right is followed only if a) the left subtree contains no eligible
++ * entities and b) no eligible entity has been found yet.
++ */
++static struct bfq_entity *bfq_first_active_entity(struct bfq_service_tree *st)
++{
++ struct bfq_entity *entry, *first = NULL;
++ struct rb_node *node = st->active.rb_node;
++
++ while (node != NULL) {
++ entry = rb_entry(node, struct bfq_entity, rb_node);
++left:
++ if (!bfq_gt(entry->start, st->vtime))
++ first = entry;
++
++ BUG_ON(bfq_gt(entry->min_start, st->vtime));
++
++ if (node->rb_left != NULL) {
++ entry = rb_entry(node->rb_left,
++ struct bfq_entity, rb_node);
++ if (!bfq_gt(entry->min_start, st->vtime)) {
++ node = node->rb_left;
++ goto left;
++ }
++ }
++ if (first != NULL)
++ break;
++ node = node->rb_right;
++ }
++
++ BUG_ON(first == NULL && !RB_EMPTY_ROOT(&st->active));
++ return first;
++}
++
++/**
++ * __bfq_lookup_next_entity - return the first eligible entity in @st.
++ * @st: the service tree.
++ *
++ * Update the virtual time in @st and return the first eligible entity
++ * it contains.
++ */
++static struct bfq_entity *__bfq_lookup_next_entity(struct bfq_service_tree *st,
++ bool force)
++{
++ struct bfq_entity *entity, *new_next_in_service = NULL;
++
++ if (RB_EMPTY_ROOT(&st->active))
++ return NULL;
++
++ bfq_update_vtime(st);
++ entity = bfq_first_active_entity(st);
++ BUG_ON(bfq_gt(entity->start, st->vtime));
++
++ /*
++ * If the chosen entity does not match with the sched_data's
++ * next_in_service and we are forcedly serving the IDLE priority
++ * class tree, bubble up budget update.
++ */
++ if (unlikely(force && entity != entity->sched_data->next_in_service)) {
++ new_next_in_service = entity;
++ for_each_entity(new_next_in_service)
++ bfq_update_budget(new_next_in_service);
++ }
++
++ return entity;
++}
++
++/**
++ * bfq_lookup_next_entity - return the first eligible entity in @sd.
++ * @sd: the sched_data.
++ * @extract: if true the returned entity will be also extracted from @sd.
++ *
++ * NOTE: since we cache the next_in_service entity at each level of the
++ * hierarchy, the complexity of the lookup can be decreased with
++ * absolutely no effort just returning the cached next_in_service value;
++ * we prefer to do full lookups to test the consistency of * the data
++ * structures.
++ */
++static struct bfq_entity *bfq_lookup_next_entity(struct bfq_sched_data *sd,
++ int extract,
++ struct bfq_data *bfqd)
++{
++ struct bfq_service_tree *st = sd->service_tree;
++ struct bfq_entity *entity;
++ int i = 0;
++
++ BUG_ON(sd->in_service_entity != NULL);
++
++ if (bfqd != NULL &&
++ jiffies - bfqd->bfq_class_idle_last_service > BFQ_CL_IDLE_TIMEOUT) {
++ entity = __bfq_lookup_next_entity(st + BFQ_IOPRIO_CLASSES - 1,
++ true);
++ if (entity != NULL) {
++ i = BFQ_IOPRIO_CLASSES - 1;
++ bfqd->bfq_class_idle_last_service = jiffies;
++ sd->next_in_service = entity;
++ }
++ }
++ for (; i < BFQ_IOPRIO_CLASSES; i++) {
++ entity = __bfq_lookup_next_entity(st + i, false);
++ if (entity != NULL) {
++ if (extract) {
++ bfq_check_next_in_service(sd, entity);
++ bfq_active_extract(st + i, entity);
++ sd->in_service_entity = entity;
++ sd->next_in_service = NULL;
++ }
++ break;
++ }
++ }
++
++ return entity;
++}
++
++/*
++ * Get next queue for service.
++ */
++static struct bfq_queue *bfq_get_next_queue(struct bfq_data *bfqd)
++{
++ struct bfq_entity *entity = NULL;
++ struct bfq_sched_data *sd;
++ struct bfq_queue *bfqq;
++
++ BUG_ON(bfqd->in_service_queue != NULL);
++
++ if (bfqd->busy_queues == 0)
++ return NULL;
++
++ sd = &bfqd->root_group->sched_data;
++ for (; sd != NULL; sd = entity->my_sched_data) {
++ entity = bfq_lookup_next_entity(sd, 1, bfqd);
++ BUG_ON(entity == NULL);
++ entity->service = 0;
++ }
++
++ bfqq = bfq_entity_to_bfqq(entity);
++ BUG_ON(bfqq == NULL);
++
++ return bfqq;
++}
++
++/*
++ * Forced extraction of the given queue.
++ */
++static void bfq_get_next_queue_forced(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ struct bfq_entity *entity;
++ struct bfq_sched_data *sd;
++
++ BUG_ON(bfqd->in_service_queue != NULL);
++
++ entity = &bfqq->entity;
++ /*
++ * Bubble up extraction/update from the leaf to the root.
++ */
++ for_each_entity(entity) {
++ sd = entity->sched_data;
++ bfq_update_budget(entity);
++ bfq_update_vtime(bfq_entity_service_tree(entity));
++ bfq_active_extract(bfq_entity_service_tree(entity), entity);
++ sd->in_service_entity = entity;
++ sd->next_in_service = NULL;
++ entity->service = 0;
++ }
++
++ return;
++}
++
++static void __bfq_bfqd_reset_in_service(struct bfq_data *bfqd)
++{
++ if (bfqd->in_service_bic != NULL) {
++ put_io_context(bfqd->in_service_bic->icq.ioc);
++ bfqd->in_service_bic = NULL;
++ }
++
++ bfqd->in_service_queue = NULL;
++ del_timer(&bfqd->idle_slice_timer);
++}
++
++static void bfq_deactivate_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq,
++ int requeue)
++{
++ struct bfq_entity *entity = &bfqq->entity;
++
++ if (bfqq == bfqd->in_service_queue)
++ __bfq_bfqd_reset_in_service(bfqd);
++
++ bfq_deactivate_entity(entity, requeue);
++}
++
++static void bfq_activate_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq)
++{
++ struct bfq_entity *entity = &bfqq->entity;
++
++ bfq_activate_entity(entity);
++}
++
++/*
++ * Called when the bfqq no longer has requests pending, remove it from
++ * the service tree.
++ */
++static void bfq_del_bfqq_busy(struct bfq_data *bfqd, struct bfq_queue *bfqq,
++ int requeue)
++{
++ BUG_ON(!bfq_bfqq_busy(bfqq));
++ BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list));
++
++ bfq_log_bfqq(bfqd, bfqq, "del from busy");
++
++ bfq_clear_bfqq_busy(bfqq);
++
++ BUG_ON(bfqd->busy_queues == 0);
++ bfqd->busy_queues--;
++
++ if (!bfqq->dispatched) {
++ bfq_weights_tree_remove(bfqd, &bfqq->entity,
++ &bfqd->queue_weights_tree);
++ if (!blk_queue_nonrot(bfqd->queue)) {
++ BUG_ON(!bfqd->busy_in_flight_queues);
++ bfqd->busy_in_flight_queues--;
++ if (bfq_bfqq_constantly_seeky(bfqq)) {
++ BUG_ON(!bfqd->
++ const_seeky_busy_in_flight_queues);
++ bfqd->const_seeky_busy_in_flight_queues--;
++ }
++ }
++ }
++ if (bfqq->wr_coeff > 1)
++ bfqd->wr_busy_queues--;
++
++ bfq_deactivate_bfqq(bfqd, bfqq, requeue);
++}
++
++/*
++ * Called when an inactive queue receives a new request.
++ */
++static void bfq_add_bfqq_busy(struct bfq_data *bfqd, struct bfq_queue *bfqq)
++{
++ BUG_ON(bfq_bfqq_busy(bfqq));
++ BUG_ON(bfqq == bfqd->in_service_queue);
++
++ bfq_log_bfqq(bfqd, bfqq, "add to busy");
++
++ bfq_activate_bfqq(bfqd, bfqq);
++
++ bfq_mark_bfqq_busy(bfqq);
++ bfqd->busy_queues++;
++
++ if (!bfqq->dispatched) {
++ if (bfqq->wr_coeff == 1)
++ bfq_weights_tree_add(bfqd, &bfqq->entity,
++ &bfqd->queue_weights_tree);
++ if (!blk_queue_nonrot(bfqd->queue)) {
++ bfqd->busy_in_flight_queues++;
++ if (bfq_bfqq_constantly_seeky(bfqq))
++ bfqd->const_seeky_busy_in_flight_queues++;
++ }
++ }
++ if (bfqq->wr_coeff > 1)
++ bfqd->wr_busy_queues++;
++}
+diff --git a/block/bfq.h b/block/bfq.h
+new file mode 100644
+index 0000000..00feff7
+--- /dev/null
++++ b/block/bfq.h
+@@ -0,0 +1,771 @@
++/*
++ * BFQ-v7r8 for 4.1.0: data structures and common functions prototypes.
++ *
++ * Based on ideas and code from CFQ:
++ * Copyright (C) 2003 Jens Axboe <axboe@kernel.dk>
++ *
++ * Copyright (C) 2008 Fabio Checconi <fabio@gandalf.sssup.it>
++ * Paolo Valente <paolo.valente@unimore.it>
++ *
++ * Copyright (C) 2010 Paolo Valente <paolo.valente@unimore.it>
++ */
++
++#ifndef _BFQ_H
++#define _BFQ_H
++
++#include <linux/blktrace_api.h>
++#include <linux/hrtimer.h>
++#include <linux/ioprio.h>
++#include <linux/rbtree.h>
++
++#define BFQ_IOPRIO_CLASSES 3
++#define BFQ_CL_IDLE_TIMEOUT (HZ/5)
++
++#define BFQ_MIN_WEIGHT 1
++#define BFQ_MAX_WEIGHT 1000
++
++#define BFQ_DEFAULT_QUEUE_IOPRIO 4
++
++#define BFQ_DEFAULT_GRP_WEIGHT 10
++#define BFQ_DEFAULT_GRP_IOPRIO 0
++#define BFQ_DEFAULT_GRP_CLASS IOPRIO_CLASS_BE
++
++struct bfq_entity;
++
++/**
++ * struct bfq_service_tree - per ioprio_class service tree.
++ * @active: tree for active entities (i.e., those backlogged).
++ * @idle: tree for idle entities (i.e., those not backlogged, with V <= F_i).
++ * @first_idle: idle entity with minimum F_i.
++ * @last_idle: idle entity with maximum F_i.
++ * @vtime: scheduler virtual time.
++ * @wsum: scheduler weight sum; active and idle entities contribute to it.
++ *
++ * Each service tree represents a B-WF2Q+ scheduler on its own. Each
++ * ioprio_class has its own independent scheduler, and so its own
++ * bfq_service_tree. All the fields are protected by the queue lock
++ * of the containing bfqd.
++ */
++struct bfq_service_tree {
++ struct rb_root active;
++ struct rb_root idle;
++
++ struct bfq_entity *first_idle;
++ struct bfq_entity *last_idle;
++
++ u64 vtime;
++ unsigned long wsum;
++};
++
++/**
++ * struct bfq_sched_data - multi-class scheduler.
++ * @in_service_entity: entity in service.
++ * @next_in_service: head-of-the-line entity in the scheduler.
++ * @service_tree: array of service trees, one per ioprio_class.
++ *
++ * bfq_sched_data is the basic scheduler queue. It supports three
++ * ioprio_classes, and can be used either as a toplevel queue or as
++ * an intermediate queue on a hierarchical setup.
++ * @next_in_service points to the active entity of the sched_data
++ * service trees that will be scheduled next.
++ *
++ * The supported ioprio_classes are the same as in CFQ, in descending
++ * priority order, IOPRIO_CLASS_RT, IOPRIO_CLASS_BE, IOPRIO_CLASS_IDLE.
++ * Requests from higher priority queues are served before all the
++ * requests from lower priority queues; among requests of the same
++ * queue requests are served according to B-WF2Q+.
++ * All the fields are protected by the queue lock of the containing bfqd.
++ */
++struct bfq_sched_data {
++ struct bfq_entity *in_service_entity;
++ struct bfq_entity *next_in_service;
++ struct bfq_service_tree service_tree[BFQ_IOPRIO_CLASSES];
++};
++
++/**
++ * struct bfq_weight_counter - counter of the number of all active entities
++ * with a given weight.
++ * @weight: weight of the entities that this counter refers to.
++ * @num_active: number of active entities with this weight.
++ * @weights_node: weights tree member (see bfq_data's @queue_weights_tree
++ * and @group_weights_tree).
++ */
++struct bfq_weight_counter {
++ short int weight;
++ unsigned int num_active;
++ struct rb_node weights_node;
++};
++
++/**
++ * struct bfq_entity - schedulable entity.
++ * @rb_node: service_tree member.
++ * @weight_counter: pointer to the weight counter associated with this entity.
++ * @on_st: flag, true if the entity is on a tree (either the active or
++ * the idle one of its service_tree).
++ * @finish: B-WF2Q+ finish timestamp (aka F_i).
++ * @start: B-WF2Q+ start timestamp (aka S_i).
++ * @tree: tree the entity is enqueued into; %NULL if not on a tree.
++ * @min_start: minimum start time of the (active) subtree rooted at
++ * this entity; used for O(log N) lookups into active trees.
++ * @service: service received during the last round of service.
++ * @budget: budget used to calculate F_i; F_i = S_i + @budget / @weight.
++ * @weight: weight of the queue
++ * @parent: parent entity, for hierarchical scheduling.
++ * @my_sched_data: for non-leaf nodes in the cgroup hierarchy, the
++ * associated scheduler queue, %NULL on leaf nodes.
++ * @sched_data: the scheduler queue this entity belongs to.
++ * @ioprio: the ioprio in use.
++ * @new_weight: when a weight change is requested, the new weight value.
++ * @orig_weight: original weight, used to implement weight boosting
++ * @new_ioprio: when an ioprio change is requested, the new ioprio value.
++ * @ioprio_class: the ioprio_class in use.
++ * @new_ioprio_class: when an ioprio_class change is requested, the new
++ * ioprio_class value.
++ * @ioprio_changed: flag, true when the user requested a weight, ioprio or
++ * ioprio_class change.
++ *
++ * A bfq_entity is used to represent either a bfq_queue (leaf node in the
++ * cgroup hierarchy) or a bfq_group into the upper level scheduler. Each
++ * entity belongs to the sched_data of the parent group in the cgroup
++ * hierarchy. Non-leaf entities have also their own sched_data, stored
++ * in @my_sched_data.
++ *
++ * Each entity stores independently its priority values; this would
++ * allow different weights on different devices, but this
++ * functionality is not exported to userspace by now. Priorities and
++ * weights are updated lazily, first storing the new values into the
++ * new_* fields, then setting the @ioprio_changed flag. As soon as
++ * there is a transition in the entity state that allows the priority
++ * update to take place the effective and the requested priority
++ * values are synchronized.
++ *
++ * Unless cgroups are used, the weight value is calculated from the
++ * ioprio to export the same interface as CFQ. When dealing with
++ * ``well-behaved'' queues (i.e., queues that do not spend too much
++ * time to consume their budget and have true sequential behavior, and
++ * when there are no external factors breaking anticipation) the
++ * relative weights at each level of the cgroups hierarchy should be
++ * guaranteed. All the fields are protected by the queue lock of the
++ * containing bfqd.
++ */
++struct bfq_entity {
++ struct rb_node rb_node;
++ struct bfq_weight_counter *weight_counter;
++
++ int on_st;
++
++ u64 finish;
++ u64 start;
++
++ struct rb_root *tree;
++
++ u64 min_start;
++
++ unsigned long service, budget;
++ unsigned short weight, new_weight;
++ unsigned short orig_weight;
++
++ struct bfq_entity *parent;
++
++ struct bfq_sched_data *my_sched_data;
++ struct bfq_sched_data *sched_data;
++
++ unsigned short ioprio, new_ioprio;
++ unsigned short ioprio_class, new_ioprio_class;
++
++ int ioprio_changed;
++};
++
++struct bfq_group;
++
++/**
++ * struct bfq_queue - leaf schedulable entity.
++ * @ref: reference counter.
++ * @bfqd: parent bfq_data.
++ * @new_bfqq: shared bfq_queue if queue is cooperating with
++ * one or more other queues.
++ * @pos_node: request-position tree member (see bfq_data's @rq_pos_tree).
++ * @pos_root: request-position tree root (see bfq_data's @rq_pos_tree).
++ * @sort_list: sorted list of pending requests.
++ * @next_rq: if fifo isn't expired, next request to serve.
++ * @queued: nr of requests queued in @sort_list.
++ * @allocated: currently allocated requests.
++ * @meta_pending: pending metadata requests.
++ * @fifo: fifo list of requests in sort_list.
++ * @entity: entity representing this queue in the scheduler.
++ * @max_budget: maximum budget allowed from the feedback mechanism.
++ * @budget_timeout: budget expiration (in jiffies).
++ * @dispatched: number of requests on the dispatch list or inside driver.
++ * @flags: status flags.
++ * @bfqq_list: node for active/idle bfqq list inside our bfqd.
++ * @burst_list_node: node for the device's burst list.
++ * @seek_samples: number of seeks sampled
++ * @seek_total: sum of the distances of the seeks sampled
++ * @seek_mean: mean seek distance
++ * @last_request_pos: position of the last request enqueued
++ * @requests_within_timer: number of consecutive pairs of request completion
++ * and arrival, such that the queue becomes idle
++ * after the completion, but the next request arrives
++ * within an idle time slice; used only if the queue's
++ * IO_bound has been cleared.
++ * @pid: pid of the process owning the queue, used for logging purposes.
++ * @last_wr_start_finish: start time of the current weight-raising period if
++ * the @bfq-queue is being weight-raised, otherwise
++ * finish time of the last weight-raising period
++ * @wr_cur_max_time: current max raising time for this queue
++ * @soft_rt_next_start: minimum time instant such that, only if a new
++ * request is enqueued after this time instant in an
++ * idle @bfq_queue with no outstanding requests, then
++ * the task associated with the queue it is deemed as
++ * soft real-time (see the comments to the function
++ * bfq_bfqq_softrt_next_start()).
++ * @last_idle_bklogged: time of the last transition of the @bfq_queue from
++ * idle to backlogged
++ * @service_from_backlogged: cumulative service received from the @bfq_queue
++ * since the last transition from idle to
++ * backlogged
++ *
++ * A bfq_queue is a leaf request queue; it can be associated with an io_context
++ * or more, if it is async or shared between cooperating processes. @cgroup
++ * holds a reference to the cgroup, to be sure that it does not disappear while
++ * a bfqq still references it (mostly to avoid races between request issuing and
++ * task migration followed by cgroup destruction).
++ * All the fields are protected by the queue lock of the containing bfqd.
++ */
++struct bfq_queue {
++ atomic_t ref;
++ struct bfq_data *bfqd;
++
++ /* fields for cooperating queues handling */
++ struct bfq_queue *new_bfqq;
++ struct rb_node pos_node;
++ struct rb_root *pos_root;
++
++ struct rb_root sort_list;
++ struct request *next_rq;
++ int queued[2];
++ int allocated[2];
++ int meta_pending;
++ struct list_head fifo;
++
++ struct bfq_entity entity;
++
++ unsigned long max_budget;
++ unsigned long budget_timeout;
++
++ int dispatched;
++
++ unsigned int flags;
++
++ struct list_head bfqq_list;
++
++ struct hlist_node burst_list_node;
++
++ unsigned int seek_samples;
++ u64 seek_total;
++ sector_t seek_mean;
++ sector_t last_request_pos;
++
++ unsigned int requests_within_timer;
++
++ pid_t pid;
++
++ /* weight-raising fields */
++ unsigned long wr_cur_max_time;
++ unsigned long soft_rt_next_start;
++ unsigned long last_wr_start_finish;
++ unsigned int wr_coeff;
++ unsigned long last_idle_bklogged;
++ unsigned long service_from_backlogged;
++};
++
++/**
++ * struct bfq_ttime - per process thinktime stats.
++ * @ttime_total: total process thinktime
++ * @ttime_samples: number of thinktime samples
++ * @ttime_mean: average process thinktime
++ */
++struct bfq_ttime {
++ unsigned long last_end_request;
++
++ unsigned long ttime_total;
++ unsigned long ttime_samples;
++ unsigned long ttime_mean;
++};
++
++/**
++ * struct bfq_io_cq - per (request_queue, io_context) structure.
++ * @icq: associated io_cq structure
++ * @bfqq: array of two process queues, the sync and the async
++ * @ttime: associated @bfq_ttime struct
++ */
++struct bfq_io_cq {
++ struct io_cq icq; /* must be the first member */
++ struct bfq_queue *bfqq[2];
++ struct bfq_ttime ttime;
++ int ioprio;
++};
++
++enum bfq_device_speed {
++ BFQ_BFQD_FAST,
++ BFQ_BFQD_SLOW,
++};
++
++/**
++ * struct bfq_data - per device data structure.
++ * @queue: request queue for the managed device.
++ * @root_group: root bfq_group for the device.
++ * @rq_pos_tree: rbtree sorted by next_request position, used when
++ * determining if two or more queues have interleaving
++ * requests (see bfq_close_cooperator()).
++ * @active_numerous_groups: number of bfq_groups containing more than one
++ * active @bfq_entity.
++ * @queue_weights_tree: rbtree of weight counters of @bfq_queues, sorted by
++ * weight. Used to keep track of whether all @bfq_queues
++ * have the same weight. The tree contains one counter
++ * for each distinct weight associated to some active
++ * and not weight-raised @bfq_queue (see the comments to
++ * the functions bfq_weights_tree_[add|remove] for
++ * further details).
++ * @group_weights_tree: rbtree of non-queue @bfq_entity weight counters, sorted
++ * by weight. Used to keep track of whether all
++ * @bfq_groups have the same weight. The tree contains
++ * one counter for each distinct weight associated to
++ * some active @bfq_group (see the comments to the
++ * functions bfq_weights_tree_[add|remove] for further
++ * details).
++ * @busy_queues: number of bfq_queues containing requests (including the
++ * queue in service, even if it is idling).
++ * @busy_in_flight_queues: number of @bfq_queues containing pending or
++ * in-flight requests, plus the @bfq_queue in
++ * service, even if idle but waiting for the
++ * possible arrival of its next sync request. This
++ * field is updated only if the device is rotational,
++ * but used only if the device is also NCQ-capable.
++ * The reason why the field is updated also for non-
++ * NCQ-capable rotational devices is related to the
++ * fact that the value of @hw_tag may be set also
++ * later than when busy_in_flight_queues may need to
++ * be incremented for the first time(s). Taking also
++ * this possibility into account, to avoid unbalanced
++ * increments/decrements, would imply more overhead
++ * than just updating busy_in_flight_queues
++ * regardless of the value of @hw_tag.
++ * @const_seeky_busy_in_flight_queues: number of constantly-seeky @bfq_queues
++ * (that is, seeky queues that expired
++ * for budget timeout at least once)
++ * containing pending or in-flight
++ * requests, including the in-service
++ * @bfq_queue if constantly seeky. This
++ * field is updated only if the device
++ * is rotational, but used only if the
++ * device is also NCQ-capable (see the
++ * comments to @busy_in_flight_queues).
++ * @wr_busy_queues: number of weight-raised busy @bfq_queues.
++ * @queued: number of queued requests.
++ * @rq_in_driver: number of requests dispatched and waiting for completion.
++ * @sync_flight: number of sync requests in the driver.
++ * @max_rq_in_driver: max number of reqs in driver in the last
++ * @hw_tag_samples completed requests.
++ * @hw_tag_samples: nr of samples used to calculate hw_tag.
++ * @hw_tag: flag set to one if the driver is showing a queueing behavior.
++ * @budgets_assigned: number of budgets assigned.
++ * @idle_slice_timer: timer set when idling for the next sequential request
++ * from the queue in service.
++ * @unplug_work: delayed work to restart dispatching on the request queue.
++ * @in_service_queue: bfq_queue in service.
++ * @in_service_bic: bfq_io_cq (bic) associated with the @in_service_queue.
++ * @last_position: on-disk position of the last served request.
++ * @last_budget_start: beginning of the last budget.
++ * @last_idling_start: beginning of the last idle slice.
++ * @peak_rate: peak transfer rate observed for a budget.
++ * @peak_rate_samples: number of samples used to calculate @peak_rate.
++ * @bfq_max_budget: maximum budget allotted to a bfq_queue before
++ * rescheduling.
++ * @group_list: list of all the bfq_groups active on the device.
++ * @active_list: list of all the bfq_queues active on the device.
++ * @idle_list: list of all the bfq_queues idle on the device.
++ * @bfq_fifo_expire: timeout for async/sync requests; when it expires
++ * requests are served in fifo order.
++ * @bfq_back_penalty: weight of backward seeks wrt forward ones.
++ * @bfq_back_max: maximum allowed backward seek.
++ * @bfq_slice_idle: maximum idling time.
++ * @bfq_user_max_budget: user-configured max budget value
++ * (0 for auto-tuning).
++ * @bfq_max_budget_async_rq: maximum budget (in nr of requests) allotted to
++ * async queues.
++ * @bfq_timeout: timeout for bfq_queues to consume their budget; used to
++ * to prevent seeky queues to impose long latencies to well
++ * behaved ones (this also implies that seeky queues cannot
++ * receive guarantees in the service domain; after a timeout
++ * they are charged for the whole allocated budget, to try
++ * to preserve a behavior reasonably fair among them, but
++ * without service-domain guarantees).
++ * @bfq_coop_thresh: number of queue merges after which a @bfq_queue is
++ * no more granted any weight-raising.
++ * @bfq_failed_cooperations: number of consecutive failed cooperation
++ * chances after which weight-raising is restored
++ * to a queue subject to more than bfq_coop_thresh
++ * queue merges.
++ * @bfq_requests_within_timer: number of consecutive requests that must be
++ * issued within the idle time slice to set
++ * again idling to a queue which was marked as
++ * non-I/O-bound (see the definition of the
++ * IO_bound flag for further details).
++ * @last_ins_in_burst: last time at which a queue entered the current
++ * burst of queues being activated shortly after
++ * each other; for more details about this and the
++ * following parameters related to a burst of
++ * activations, see the comments to the function
++ * @bfq_handle_burst.
++ * @bfq_burst_interval: reference time interval used to decide whether a
++ * queue has been activated shortly after
++ * @last_ins_in_burst.
++ * @burst_size: number of queues in the current burst of queue activations.
++ * @bfq_large_burst_thresh: maximum burst size above which the current
++ * queue-activation burst is deemed as 'large'.
++ * @large_burst: true if a large queue-activation burst is in progress.
++ * @burst_list: head of the burst list (as for the above fields, more details
++ * in the comments to the function bfq_handle_burst).
++ * @low_latency: if set to true, low-latency heuristics are enabled.
++ * @bfq_wr_coeff: maximum factor by which the weight of a weight-raised
++ * queue is multiplied.
++ * @bfq_wr_max_time: maximum duration of a weight-raising period (jiffies).
++ * @bfq_wr_rt_max_time: maximum duration for soft real-time processes.
++ * @bfq_wr_min_idle_time: minimum idle period after which weight-raising
++ * may be reactivated for a queue (in jiffies).
++ * @bfq_wr_min_inter_arr_async: minimum period between request arrivals
++ * after which weight-raising may be
++ * reactivated for an already busy queue
++ * (in jiffies).
++ * @bfq_wr_max_softrt_rate: max service-rate for a soft real-time queue,
++ * sectors per seconds.
++ * @RT_prod: cached value of the product R*T used for computing the maximum
++ * duration of the weight raising automatically.
++ * @device_speed: device-speed class for the low-latency heuristic.
++ * @oom_bfqq: fallback dummy bfqq for extreme OOM conditions.
++ *
++ * All the fields are protected by the @queue lock.
++ */
++struct bfq_data {
++ struct request_queue *queue;
++
++ struct bfq_group *root_group;
++ struct rb_root rq_pos_tree;
++
++#ifdef CONFIG_CGROUP_BFQIO
++ int active_numerous_groups;
++#endif
++
++ struct rb_root queue_weights_tree;
++ struct rb_root group_weights_tree;
++
++ int busy_queues;
++ int busy_in_flight_queues;
++ int const_seeky_busy_in_flight_queues;
++ int wr_busy_queues;
++ int queued;
++ int rq_in_driver;
++ int sync_flight;
++
++ int max_rq_in_driver;
++ int hw_tag_samples;
++ int hw_tag;
++
++ int budgets_assigned;
++
++ struct timer_list idle_slice_timer;
++ struct work_struct unplug_work;
++
++ struct bfq_queue *in_service_queue;
++ struct bfq_io_cq *in_service_bic;
++
++ sector_t last_position;
++
++ ktime_t last_budget_start;
++ ktime_t last_idling_start;
++ int peak_rate_samples;
++ u64 peak_rate;
++ unsigned long bfq_max_budget;
++
++ struct hlist_head group_list;
++ struct list_head active_list;
++ struct list_head idle_list;
++
++ unsigned int bfq_fifo_expire[2];
++ unsigned int bfq_back_penalty;
++ unsigned int bfq_back_max;
++ unsigned int bfq_slice_idle;
++ u64 bfq_class_idle_last_service;
++
++ unsigned int bfq_user_max_budget;
++ unsigned int bfq_max_budget_async_rq;
++ unsigned int bfq_timeout[2];
++
++ unsigned int bfq_coop_thresh;
++ unsigned int bfq_failed_cooperations;
++ unsigned int bfq_requests_within_timer;
++
++ unsigned long last_ins_in_burst;
++ unsigned long bfq_burst_interval;
++ int burst_size;
++ unsigned long bfq_large_burst_thresh;
++ bool large_burst;
++ struct hlist_head burst_list;
++
++ bool low_latency;
++
++ /* parameters of the low_latency heuristics */
++ unsigned int bfq_wr_coeff;
++ unsigned int bfq_wr_max_time;
++ unsigned int bfq_wr_rt_max_time;
++ unsigned int bfq_wr_min_idle_time;
++ unsigned long bfq_wr_min_inter_arr_async;
++ unsigned int bfq_wr_max_softrt_rate;
++ u64 RT_prod;
++ enum bfq_device_speed device_speed;
++
++ struct bfq_queue oom_bfqq;
++};
++
++enum bfqq_state_flags {
++ BFQ_BFQQ_FLAG_busy = 0, /* has requests or is in service */
++ BFQ_BFQQ_FLAG_wait_request, /* waiting for a request */
++ BFQ_BFQQ_FLAG_must_alloc, /* must be allowed rq alloc */
++ BFQ_BFQQ_FLAG_fifo_expire, /* FIFO checked in this slice */
++ BFQ_BFQQ_FLAG_idle_window, /* slice idling enabled */
++ BFQ_BFQQ_FLAG_sync, /* synchronous queue */
++ BFQ_BFQQ_FLAG_budget_new, /* no completion with this budget */
++ BFQ_BFQQ_FLAG_IO_bound, /*
++ * bfqq has timed-out at least once
++ * having consumed at most 2/10 of
++ * its budget
++ */
++ BFQ_BFQQ_FLAG_in_large_burst, /*
++ * bfqq activated in a large burst,
++ * see comments to bfq_handle_burst.
++ */
++ BFQ_BFQQ_FLAG_constantly_seeky, /*
++ * bfqq has proved to be slow and
++ * seeky until budget timeout
++ */
++ BFQ_BFQQ_FLAG_softrt_update, /*
++ * may need softrt-next-start
++ * update
++ */
++ BFQ_BFQQ_FLAG_coop, /* bfqq is shared */
++ BFQ_BFQQ_FLAG_split_coop, /* shared bfqq will be splitted */
++};
++
++#define BFQ_BFQQ_FNS(name) \
++static inline void bfq_mark_bfqq_##name(struct bfq_queue *bfqq) \
++{ \
++ (bfqq)->flags |= (1 << BFQ_BFQQ_FLAG_##name); \
++} \
++static inline void bfq_clear_bfqq_##name(struct bfq_queue *bfqq) \
++{ \
++ (bfqq)->flags &= ~(1 << BFQ_BFQQ_FLAG_##name); \
++} \
++static inline int bfq_bfqq_##name(const struct bfq_queue *bfqq) \
++{ \
++ return ((bfqq)->flags & (1 << BFQ_BFQQ_FLAG_##name)) != 0; \
++}
++
++BFQ_BFQQ_FNS(busy);
++BFQ_BFQQ_FNS(wait_request);
++BFQ_BFQQ_FNS(must_alloc);
++BFQ_BFQQ_FNS(fifo_expire);
++BFQ_BFQQ_FNS(idle_window);
++BFQ_BFQQ_FNS(sync);
++BFQ_BFQQ_FNS(budget_new);
++BFQ_BFQQ_FNS(IO_bound);
++BFQ_BFQQ_FNS(in_large_burst);
++BFQ_BFQQ_FNS(constantly_seeky);
++BFQ_BFQQ_FNS(coop);
++BFQ_BFQQ_FNS(split_coop);
++BFQ_BFQQ_FNS(softrt_update);
++#undef BFQ_BFQQ_FNS
++
++/* Logging facilities. */
++#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) \
++ blk_add_trace_msg((bfqd)->queue, "bfq%d " fmt, (bfqq)->pid, ##args)
++
++#define bfq_log(bfqd, fmt, args...) \
++ blk_add_trace_msg((bfqd)->queue, "bfq " fmt, ##args)
++
++/* Expiration reasons. */
++enum bfqq_expiration {
++ BFQ_BFQQ_TOO_IDLE = 0, /*
++ * queue has been idling for
++ * too long
++ */
++ BFQ_BFQQ_BUDGET_TIMEOUT, /* budget took too long to be used */
++ BFQ_BFQQ_BUDGET_EXHAUSTED, /* budget consumed */
++ BFQ_BFQQ_NO_MORE_REQUESTS, /* the queue has no more requests */
++};
++
++#ifdef CONFIG_CGROUP_BFQIO
++/**
++ * struct bfq_group - per (device, cgroup) data structure.
++ * @entity: schedulable entity to insert into the parent group sched_data.
++ * @sched_data: own sched_data, to contain child entities (they may be
++ * both bfq_queues and bfq_groups).
++ * @group_node: node to be inserted into the bfqio_cgroup->group_data
++ * list of the containing cgroup's bfqio_cgroup.
++ * @bfqd_node: node to be inserted into the @bfqd->group_list list
++ * of the groups active on the same device; used for cleanup.
++ * @bfqd: the bfq_data for the device this group acts upon.
++ * @async_bfqq: array of async queues for all the tasks belonging to
++ * the group, one queue per ioprio value per ioprio_class,
++ * except for the idle class that has only one queue.
++ * @async_idle_bfqq: async queue for the idle class (ioprio is ignored).
++ * @my_entity: pointer to @entity, %NULL for the toplevel group; used
++ * to avoid too many special cases during group creation/
++ * migration.
++ * @active_entities: number of active entities belonging to the group;
++ * unused for the root group. Used to know whether there
++ * are groups with more than one active @bfq_entity
++ * (see the comments to the function
++ * bfq_bfqq_must_not_expire()).
++ *
++ * Each (device, cgroup) pair has its own bfq_group, i.e., for each cgroup
++ * there is a set of bfq_groups, each one collecting the lower-level
++ * entities belonging to the group that are acting on the same device.
++ *
++ * Locking works as follows:
++ * o @group_node is protected by the bfqio_cgroup lock, and is accessed
++ * via RCU from its readers.
++ * o @bfqd is protected by the queue lock, RCU is used to access it
++ * from the readers.
++ * o All the other fields are protected by the @bfqd queue lock.
++ */
++struct bfq_group {
++ struct bfq_entity entity;
++ struct bfq_sched_data sched_data;
++
++ struct hlist_node group_node;
++ struct hlist_node bfqd_node;
++
++ void *bfqd;
++
++ struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR];
++ struct bfq_queue *async_idle_bfqq;
++
++ struct bfq_entity *my_entity;
++
++ int active_entities;
++};
++
++/**
++ * struct bfqio_cgroup - bfq cgroup data structure.
++ * @css: subsystem state for bfq in the containing cgroup.
++ * @online: flag marked when the subsystem is inserted.
++ * @weight: cgroup weight.
++ * @ioprio: cgroup ioprio.
++ * @ioprio_class: cgroup ioprio_class.
++ * @lock: spinlock that protects @ioprio, @ioprio_class and @group_data.
++ * @group_data: list containing the bfq_group belonging to this cgroup.
++ *
++ * @group_data is accessed using RCU, with @lock protecting the updates,
++ * @ioprio and @ioprio_class are protected by @lock.
++ */
++struct bfqio_cgroup {
++ struct cgroup_subsys_state css;
++ bool online;
++
++ unsigned short weight, ioprio, ioprio_class;
++
++ spinlock_t lock;
++ struct hlist_head group_data;
++};
++#else
++struct bfq_group {
++ struct bfq_sched_data sched_data;
++
++ struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR];
++ struct bfq_queue *async_idle_bfqq;
++};
++#endif
++
++static inline struct bfq_service_tree *
++bfq_entity_service_tree(struct bfq_entity *entity)
++{
++ struct bfq_sched_data *sched_data = entity->sched_data;
++ unsigned int idx = entity->ioprio_class - 1;
++
++ BUG_ON(idx >= BFQ_IOPRIO_CLASSES);
++ BUG_ON(sched_data == NULL);
++
++ return sched_data->service_tree + idx;
++}
++
++static inline struct bfq_queue *bic_to_bfqq(struct bfq_io_cq *bic,
++ bool is_sync)
++{
++ return bic->bfqq[is_sync];
++}
++
++static inline void bic_set_bfqq(struct bfq_io_cq *bic,
++ struct bfq_queue *bfqq, bool is_sync)
++{
++ bic->bfqq[is_sync] = bfqq;
++}
++
++static inline struct bfq_data *bic_to_bfqd(struct bfq_io_cq *bic)
++{
++ return bic->icq.q->elevator->elevator_data;
++}
++
++/**
++ * bfq_get_bfqd_locked - get a lock to a bfqd using a RCU protected pointer.
++ * @ptr: a pointer to a bfqd.
++ * @flags: storage for the flags to be saved.
++ *
++ * This function allows bfqg->bfqd to be protected by the
++ * queue lock of the bfqd they reference; the pointer is dereferenced
++ * under RCU, so the storage for bfqd is assured to be safe as long
++ * as the RCU read side critical section does not end. After the
++ * bfqd->queue->queue_lock is taken the pointer is rechecked, to be
++ * sure that no other writer accessed it. If we raced with a writer,
++ * the function returns NULL, with the queue unlocked, otherwise it
++ * returns the dereferenced pointer, with the queue locked.
++ */
++static inline struct bfq_data *bfq_get_bfqd_locked(void **ptr,
++ unsigned long *flags)
++{
++ struct bfq_data *bfqd;
++
++ rcu_read_lock();
++ bfqd = rcu_dereference(*(struct bfq_data **)ptr);
++
++ if (bfqd != NULL) {
++ spin_lock_irqsave(bfqd->queue->queue_lock, *flags);
++ if (*ptr == bfqd)
++ goto out;
++ spin_unlock_irqrestore(bfqd->queue->queue_lock, *flags);
++ }
++
++ bfqd = NULL;
++out:
++ rcu_read_unlock();
++ return bfqd;
++}
++
++static inline void bfq_put_bfqd_unlock(struct bfq_data *bfqd,
++ unsigned long *flags)
++{
++ spin_unlock_irqrestore(bfqd->queue->queue_lock, *flags);
++}
++
++static void bfq_check_ioprio_change(struct bfq_io_cq *bic);
++static void bfq_put_queue(struct bfq_queue *bfqq);
++static void bfq_dispatch_insert(struct request_queue *q, struct request *rq);
++static struct bfq_queue *bfq_get_queue(struct bfq_data *bfqd,
++ struct bfq_group *bfqg, int is_sync,
++ struct bfq_io_cq *bic, gfp_t gfp_mask);
++static void bfq_end_wr_async_queues(struct bfq_data *bfqd,
++ struct bfq_group *bfqg);
++static void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg);
++static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq);
++
++#endif /* _BFQ_H */
+--
+2.1.4
+
diff --git a/5003_block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-v7r8-for-4.1.0.patch b/5003_block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-v7r8-for-4.1.0.patch
new file mode 100644
index 0000000..7c977bd
--- /dev/null
+++ b/5003_block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-v7r8-for-4.1.0.patch
@@ -0,0 +1,1220 @@
+From 0a52c636b77988d8aa0d24bf36144e4228d43df9 Mon Sep 17 00:00:00 2001
+From: Mauro Andreolini <mauro.andreolini@unimore.it>
+Date: Fri, 5 Jun 2015 17:45:40 +0200
+Subject: [PATCH 3/3] block, bfq: add Early Queue Merge (EQM) to BFQ-v7r8 for
+ 4.1.0
+
+A set of processes may happen to perform interleaved reads, i.e.,requests
+whose union would give rise to a sequential read pattern. There are two
+typical cases: in the first case, processes read fixed-size chunks of
+data at a fixed distance from each other, while in the second case processes
+may read variable-size chunks at variable distances. The latter case occurs
+for example with QEMU, which splits the I/O generated by the guest into
+multiple chunks, and lets these chunks be served by a pool of cooperating
+processes, iteratively assigning the next chunk of I/O to the first
+available process. CFQ uses actual queue merging for the first type of
+rocesses, whereas it uses preemption to get a sequential read pattern out
+of the read requests performed by the second type of processes. In the end
+it uses two different mechanisms to achieve the same goal: boosting the
+throughput with interleaved I/O.
+
+This patch introduces Early Queue Merge (EQM), a unified mechanism to get a
+sequential read pattern with both types of processes. The main idea is
+checking newly arrived requests against the next request of the active queue
+both in case of actual request insert and in case of request merge. By doing
+so, both the types of processes can be handled by just merging their queues.
+EQM is then simpler and more compact than the pair of mechanisms used in
+CFQ.
+
+Finally, EQM also preserves the typical low-latency properties of BFQ, by
+properly restoring the weight-raising state of a queue when it gets back to
+a non-merged state.
+
+Signed-off-by: Mauro Andreolini <mauro.andreolini@unimore.it>
+Signed-off-by: Arianna Avanzini <avanzini.arianna@gmail.com>
+Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
+---
+ block/bfq-iosched.c | 750 +++++++++++++++++++++++++++++++++++++---------------
+ block/bfq-sched.c | 28 --
+ block/bfq.h | 54 +++-
+ 3 files changed, 580 insertions(+), 252 deletions(-)
+
+diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
+index 773b2ee..71b51c1 100644
+--- a/block/bfq-iosched.c
++++ b/block/bfq-iosched.c
+@@ -573,6 +573,57 @@ static inline unsigned int bfq_wr_duration(struct bfq_data *bfqd)
+ return dur;
+ }
+
++static inline unsigned
++bfq_bfqq_cooperations(struct bfq_queue *bfqq)
++{
++ return bfqq->bic ? bfqq->bic->cooperations : 0;
++}
++
++static inline void
++bfq_bfqq_resume_state(struct bfq_queue *bfqq, struct bfq_io_cq *bic)
++{
++ if (bic->saved_idle_window)
++ bfq_mark_bfqq_idle_window(bfqq);
++ else
++ bfq_clear_bfqq_idle_window(bfqq);
++ if (bic->saved_IO_bound)
++ bfq_mark_bfqq_IO_bound(bfqq);
++ else
++ bfq_clear_bfqq_IO_bound(bfqq);
++ /* Assuming that the flag in_large_burst is already correctly set */
++ if (bic->wr_time_left && bfqq->bfqd->low_latency &&
++ !bfq_bfqq_in_large_burst(bfqq) &&
++ bic->cooperations < bfqq->bfqd->bfq_coop_thresh) {
++ /*
++ * Start a weight raising period with the duration given by
++ * the raising_time_left snapshot.
++ */
++ if (bfq_bfqq_busy(bfqq))
++ bfqq->bfqd->wr_busy_queues++;
++ bfqq->wr_coeff = bfqq->bfqd->bfq_wr_coeff;
++ bfqq->wr_cur_max_time = bic->wr_time_left;
++ bfqq->last_wr_start_finish = jiffies;
++ bfqq->entity.ioprio_changed = 1;
++ }
++ /*
++ * Clear wr_time_left to prevent bfq_bfqq_save_state() from
++ * getting confused about the queue's need of a weight-raising
++ * period.
++ */
++ bic->wr_time_left = 0;
++}
++
++/* Must be called with the queue_lock held. */
++static int bfqq_process_refs(struct bfq_queue *bfqq)
++{
++ int process_refs, io_refs;
++
++ io_refs = bfqq->allocated[READ] + bfqq->allocated[WRITE];
++ process_refs = atomic_read(&bfqq->ref) - io_refs - bfqq->entity.on_st;
++ BUG_ON(process_refs < 0);
++ return process_refs;
++}
++
+ /* Empty burst list and add just bfqq (see comments to bfq_handle_burst) */
+ static inline void bfq_reset_burst_list(struct bfq_data *bfqd,
+ struct bfq_queue *bfqq)
+@@ -817,7 +868,7 @@ static void bfq_add_request(struct request *rq)
+ bfq_rq_pos_tree_add(bfqd, bfqq);
+
+ if (!bfq_bfqq_busy(bfqq)) {
+- bool soft_rt,
++ bool soft_rt, coop_or_in_burst,
+ idle_for_long_time = time_is_before_jiffies(
+ bfqq->budget_timeout +
+ bfqd->bfq_wr_min_idle_time);
+@@ -841,11 +892,12 @@ static void bfq_add_request(struct request *rq)
+ bfqd->last_ins_in_burst = jiffies;
+ }
+
++ coop_or_in_burst = bfq_bfqq_in_large_burst(bfqq) ||
++ bfq_bfqq_cooperations(bfqq) >= bfqd->bfq_coop_thresh;
+ soft_rt = bfqd->bfq_wr_max_softrt_rate > 0 &&
+- !bfq_bfqq_in_large_burst(bfqq) &&
++ !coop_or_in_burst &&
+ time_is_before_jiffies(bfqq->soft_rt_next_start);
+- interactive = !bfq_bfqq_in_large_burst(bfqq) &&
+- idle_for_long_time;
++ interactive = !coop_or_in_burst && idle_for_long_time;
+ entity->budget = max_t(unsigned long, bfqq->max_budget,
+ bfq_serv_to_charge(next_rq, bfqq));
+
+@@ -864,11 +916,20 @@ static void bfq_add_request(struct request *rq)
+ if (!bfqd->low_latency)
+ goto add_bfqq_busy;
+
++ if (bfq_bfqq_just_split(bfqq))
++ goto set_ioprio_changed;
++
+ /*
+- * If the queue is not being boosted and has been idle
+- * for enough time, start a weight-raising period
++ * If the queue:
++ * - is not being boosted,
++ * - has been idle for enough time,
++ * - is not a sync queue or is linked to a bfq_io_cq (it is
++ * shared "for its nature" or it is not shared and its
++ * requests have not been redirected to a shared queue)
++ * start a weight-raising period.
+ */
+- if (old_wr_coeff == 1 && (interactive || soft_rt)) {
++ if (old_wr_coeff == 1 && (interactive || soft_rt) &&
++ (!bfq_bfqq_sync(bfqq) || bfqq->bic != NULL)) {
+ bfqq->wr_coeff = bfqd->bfq_wr_coeff;
+ if (interactive)
+ bfqq->wr_cur_max_time = bfq_wr_duration(bfqd);
+@@ -882,7 +943,7 @@ static void bfq_add_request(struct request *rq)
+ } else if (old_wr_coeff > 1) {
+ if (interactive)
+ bfqq->wr_cur_max_time = bfq_wr_duration(bfqd);
+- else if (bfq_bfqq_in_large_burst(bfqq) ||
++ else if (coop_or_in_burst ||
+ (bfqq->wr_cur_max_time ==
+ bfqd->bfq_wr_rt_max_time &&
+ !soft_rt)) {
+@@ -901,18 +962,18 @@ static void bfq_add_request(struct request *rq)
+ /*
+ *
+ * The remaining weight-raising time is lower
+- * than bfqd->bfq_wr_rt_max_time, which
+- * means that the application is enjoying
+- * weight raising either because deemed soft-
+- * rt in the near past, or because deemed
+- * interactive a long ago. In both cases,
+- * resetting now the current remaining weight-
+- * raising time for the application to the
+- * weight-raising duration for soft rt
+- * applications would not cause any latency
+- * increase for the application (as the new
+- * duration would be higher than the remaining
+- * time).
++ * than bfqd->bfq_wr_rt_max_time, which means
++ * that the application is enjoying weight
++ * raising either because deemed soft-rt in
++ * the near past, or because deemed interactive
++ * a long ago.
++ * In both cases, resetting now the current
++ * remaining weight-raising time for the
++ * application to the weight-raising duration
++ * for soft rt applications would not cause any
++ * latency increase for the application (as the
++ * new duration would be higher than the
++ * remaining time).
+ *
+ * In addition, the application is now meeting
+ * the requirements for being deemed soft rt.
+@@ -947,6 +1008,7 @@ static void bfq_add_request(struct request *rq)
+ bfqd->bfq_wr_rt_max_time;
+ }
+ }
++set_ioprio_changed:
+ if (old_wr_coeff != bfqq->wr_coeff)
+ entity->ioprio_changed = 1;
+ add_bfqq_busy:
+@@ -1167,90 +1229,35 @@ static void bfq_end_wr(struct bfq_data *bfqd)
+ spin_unlock_irq(bfqd->queue->queue_lock);
+ }
+
+-static int bfq_allow_merge(struct request_queue *q, struct request *rq,
+- struct bio *bio)
++static inline sector_t bfq_io_struct_pos(void *io_struct, bool request)
+ {
+- struct bfq_data *bfqd = q->elevator->elevator_data;
+- struct bfq_io_cq *bic;
+- struct bfq_queue *bfqq;
+-
+- /*
+- * Disallow merge of a sync bio into an async request.
+- */
+- if (bfq_bio_sync(bio) && !rq_is_sync(rq))
+- return 0;
+-
+- /*
+- * Lookup the bfqq that this bio will be queued with. Allow
+- * merge only if rq is queued there.
+- * Queue lock is held here.
+- */
+- bic = bfq_bic_lookup(bfqd, current->io_context);
+- if (bic == NULL)
+- return 0;
+-
+- bfqq = bic_to_bfqq(bic, bfq_bio_sync(bio));
+- return bfqq == RQ_BFQQ(rq);
+-}
+-
+-static void __bfq_set_in_service_queue(struct bfq_data *bfqd,
+- struct bfq_queue *bfqq)
+-{
+- if (bfqq != NULL) {
+- bfq_mark_bfqq_must_alloc(bfqq);
+- bfq_mark_bfqq_budget_new(bfqq);
+- bfq_clear_bfqq_fifo_expire(bfqq);
+-
+- bfqd->budgets_assigned = (bfqd->budgets_assigned*7 + 256) / 8;
+-
+- bfq_log_bfqq(bfqd, bfqq,
+- "set_in_service_queue, cur-budget = %lu",
+- bfqq->entity.budget);
+- }
+-
+- bfqd->in_service_queue = bfqq;
+-}
+-
+-/*
+- * Get and set a new queue for service.
+- */
+-static struct bfq_queue *bfq_set_in_service_queue(struct bfq_data *bfqd,
+- struct bfq_queue *bfqq)
+-{
+- if (!bfqq)
+- bfqq = bfq_get_next_queue(bfqd);
++ if (request)
++ return blk_rq_pos(io_struct);
+ else
+- bfq_get_next_queue_forced(bfqd, bfqq);
+-
+- __bfq_set_in_service_queue(bfqd, bfqq);
+- return bfqq;
++ return ((struct bio *)io_struct)->bi_iter.bi_sector;
+ }
+
+-static inline sector_t bfq_dist_from_last(struct bfq_data *bfqd,
+- struct request *rq)
++static inline sector_t bfq_dist_from(sector_t pos1,
++ sector_t pos2)
+ {
+- if (blk_rq_pos(rq) >= bfqd->last_position)
+- return blk_rq_pos(rq) - bfqd->last_position;
++ if (pos1 >= pos2)
++ return pos1 - pos2;
+ else
+- return bfqd->last_position - blk_rq_pos(rq);
++ return pos2 - pos1;
+ }
+
+-/*
+- * Return true if bfqq has no request pending and rq is close enough to
+- * bfqd->last_position, or if rq is closer to bfqd->last_position than
+- * bfqq->next_rq
+- */
+-static inline int bfq_rq_close(struct bfq_data *bfqd, struct request *rq)
++static inline int bfq_rq_close_to_sector(void *io_struct, bool request,
++ sector_t sector)
+ {
+- return bfq_dist_from_last(bfqd, rq) <= BFQQ_SEEK_THR;
++ return bfq_dist_from(bfq_io_struct_pos(io_struct, request), sector) <=
++ BFQQ_SEEK_THR;
+ }
+
+-static struct bfq_queue *bfqq_close(struct bfq_data *bfqd)
++static struct bfq_queue *bfqq_close(struct bfq_data *bfqd, sector_t sector)
+ {
+ struct rb_root *root = &bfqd->rq_pos_tree;
+ struct rb_node *parent, *node;
+ struct bfq_queue *__bfqq;
+- sector_t sector = bfqd->last_position;
+
+ if (RB_EMPTY_ROOT(root))
+ return NULL;
+@@ -1269,7 +1276,7 @@ static struct bfq_queue *bfqq_close(struct bfq_data *bfqd)
+ * next_request position).
+ */
+ __bfqq = rb_entry(parent, struct bfq_queue, pos_node);
+- if (bfq_rq_close(bfqd, __bfqq->next_rq))
++ if (bfq_rq_close_to_sector(__bfqq->next_rq, true, sector))
+ return __bfqq;
+
+ if (blk_rq_pos(__bfqq->next_rq) < sector)
+@@ -1280,7 +1287,7 @@ static struct bfq_queue *bfqq_close(struct bfq_data *bfqd)
+ return NULL;
+
+ __bfqq = rb_entry(node, struct bfq_queue, pos_node);
+- if (bfq_rq_close(bfqd, __bfqq->next_rq))
++ if (bfq_rq_close_to_sector(__bfqq->next_rq, true, sector))
+ return __bfqq;
+
+ return NULL;
+@@ -1289,14 +1296,12 @@ static struct bfq_queue *bfqq_close(struct bfq_data *bfqd)
+ /*
+ * bfqd - obvious
+ * cur_bfqq - passed in so that we don't decide that the current queue
+- * is closely cooperating with itself.
+- *
+- * We are assuming that cur_bfqq has dispatched at least one request,
+- * and that bfqd->last_position reflects a position on the disk associated
+- * with the I/O issued by cur_bfqq.
++ * is closely cooperating with itself
++ * sector - used as a reference point to search for a close queue
+ */
+ static struct bfq_queue *bfq_close_cooperator(struct bfq_data *bfqd,
+- struct bfq_queue *cur_bfqq)
++ struct bfq_queue *cur_bfqq,
++ sector_t sector)
+ {
+ struct bfq_queue *bfqq;
+
+@@ -1316,7 +1321,7 @@ static struct bfq_queue *bfq_close_cooperator(struct bfq_data *bfqd,
+ * working closely on the same area of the disk. In that case,
+ * we can group them together and don't waste time idling.
+ */
+- bfqq = bfqq_close(bfqd);
++ bfqq = bfqq_close(bfqd, sector);
+ if (bfqq == NULL || bfqq == cur_bfqq)
+ return NULL;
+
+@@ -1343,6 +1348,315 @@ static struct bfq_queue *bfq_close_cooperator(struct bfq_data *bfqd,
+ return bfqq;
+ }
+
++static struct bfq_queue *
++bfq_setup_merge(struct bfq_queue *bfqq, struct bfq_queue *new_bfqq)
++{
++ int process_refs, new_process_refs;
++ struct bfq_queue *__bfqq;
++
++ /*
++ * If there are no process references on the new_bfqq, then it is
++ * unsafe to follow the ->new_bfqq chain as other bfqq's in the chain
++ * may have dropped their last reference (not just their last process
++ * reference).
++ */
++ if (!bfqq_process_refs(new_bfqq))
++ return NULL;
++
++ /* Avoid a circular list and skip interim queue merges. */
++ while ((__bfqq = new_bfqq->new_bfqq)) {
++ if (__bfqq == bfqq)
++ return NULL;
++ new_bfqq = __bfqq;
++ }
++
++ process_refs = bfqq_process_refs(bfqq);
++ new_process_refs = bfqq_process_refs(new_bfqq);
++ /*
++ * If the process for the bfqq has gone away, there is no
++ * sense in merging the queues.
++ */
++ if (process_refs == 0 || new_process_refs == 0)
++ return NULL;
++
++ bfq_log_bfqq(bfqq->bfqd, bfqq, "scheduling merge with queue %d",
++ new_bfqq->pid);
++
++ /*
++ * Merging is just a redirection: the requests of the process
++ * owning one of the two queues are redirected to the other queue.
++ * The latter queue, in its turn, is set as shared if this is the
++ * first time that the requests of some process are redirected to
++ * it.
++ *
++ * We redirect bfqq to new_bfqq and not the opposite, because we
++ * are in the context of the process owning bfqq, hence we have
++ * the io_cq of this process. So we can immediately configure this
++ * io_cq to redirect the requests of the process to new_bfqq.
++ *
++ * NOTE, even if new_bfqq coincides with the in-service queue, the
++ * io_cq of new_bfqq is not available, because, if the in-service
++ * queue is shared, bfqd->in_service_bic may not point to the
++ * io_cq of the in-service queue.
++ * Redirecting the requests of the process owning bfqq to the
++ * currently in-service queue is in any case the best option, as
++ * we feed the in-service queue with new requests close to the
++ * last request served and, by doing so, hopefully increase the
++ * throughput.
++ */
++ bfqq->new_bfqq = new_bfqq;
++ atomic_add(process_refs, &new_bfqq->ref);
++ return new_bfqq;
++}
++
++/*
++ * Attempt to schedule a merge of bfqq with the currently in-service queue
++ * or with a close queue among the scheduled queues.
++ * Return NULL if no merge was scheduled, a pointer to the shared bfq_queue
++ * structure otherwise.
++ *
++ * The OOM queue is not allowed to participate to cooperation: in fact, since
++ * the requests temporarily redirected to the OOM queue could be redirected
++ * again to dedicated queues at any time, the state needed to correctly
++ * handle merging with the OOM queue would be quite complex and expensive
++ * to maintain. Besides, in such a critical condition as an out of memory,
++ * the benefits of queue merging may be little relevant, or even negligible.
++ */
++static struct bfq_queue *
++bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq,
++ void *io_struct, bool request)
++{
++ struct bfq_queue *in_service_bfqq, *new_bfqq;
++
++ if (bfqq->new_bfqq)
++ return bfqq->new_bfqq;
++
++ if (!io_struct || unlikely(bfqq == &bfqd->oom_bfqq))
++ return NULL;
++
++ in_service_bfqq = bfqd->in_service_queue;
++
++ if (in_service_bfqq == NULL || in_service_bfqq == bfqq ||
++ !bfqd->in_service_bic ||
++ unlikely(in_service_bfqq == &bfqd->oom_bfqq))
++ goto check_scheduled;
++
++ if (bfq_class_idle(in_service_bfqq) || bfq_class_idle(bfqq))
++ goto check_scheduled;
++
++ if (bfq_class_rt(in_service_bfqq) != bfq_class_rt(bfqq))
++ goto check_scheduled;
++
++ if (in_service_bfqq->entity.parent != bfqq->entity.parent)
++ goto check_scheduled;
++
++ if (bfq_rq_close_to_sector(io_struct, request, bfqd->last_position) &&
++ bfq_bfqq_sync(in_service_bfqq) && bfq_bfqq_sync(bfqq)) {
++ new_bfqq = bfq_setup_merge(bfqq, in_service_bfqq);
++ if (new_bfqq != NULL)
++ return new_bfqq; /* Merge with in-service queue */
++ }
++
++ /*
++ * Check whether there is a cooperator among currently scheduled
++ * queues. The only thing we need is that the bio/request is not
++ * NULL, as we need it to establish whether a cooperator exists.
++ */
++check_scheduled:
++ new_bfqq = bfq_close_cooperator(bfqd, bfqq,
++ bfq_io_struct_pos(io_struct, request));
++ if (new_bfqq && likely(new_bfqq != &bfqd->oom_bfqq))
++ return bfq_setup_merge(bfqq, new_bfqq);
++
++ return NULL;
++}
++
++static inline void
++bfq_bfqq_save_state(struct bfq_queue *bfqq)
++{
++ /*
++ * If bfqq->bic == NULL, the queue is already shared or its requests
++ * have already been redirected to a shared queue; both idle window
++ * and weight raising state have already been saved. Do nothing.
++ */
++ if (bfqq->bic == NULL)
++ return;
++ if (bfqq->bic->wr_time_left)
++ /*
++ * This is the queue of a just-started process, and would
++ * deserve weight raising: we set wr_time_left to the full
++ * weight-raising duration to trigger weight-raising when
++ * and if the queue is split and the first request of the
++ * queue is enqueued.
++ */
++ bfqq->bic->wr_time_left = bfq_wr_duration(bfqq->bfqd);
++ else if (bfqq->wr_coeff > 1) {
++ unsigned long wr_duration =
++ jiffies - bfqq->last_wr_start_finish;
++ /*
++ * It may happen that a queue's weight raising period lasts
++ * longer than its wr_cur_max_time, as weight raising is
++ * handled only when a request is enqueued or dispatched (it
++ * does not use any timer). If the weight raising period is
++ * about to end, don't save it.
++ */
++ if (bfqq->wr_cur_max_time <= wr_duration)
++ bfqq->bic->wr_time_left = 0;
++ else
++ bfqq->bic->wr_time_left =
++ bfqq->wr_cur_max_time - wr_duration;
++ /*
++ * The bfq_queue is becoming shared or the requests of the
++ * process owning the queue are being redirected to a shared
++ * queue. Stop the weight raising period of the queue, as in
++ * both cases it should not be owned by an interactive or
++ * soft real-time application.
++ */
++ bfq_bfqq_end_wr(bfqq);
++ } else
++ bfqq->bic->wr_time_left = 0;
++ bfqq->bic->saved_idle_window = bfq_bfqq_idle_window(bfqq);
++ bfqq->bic->saved_IO_bound = bfq_bfqq_IO_bound(bfqq);
++ bfqq->bic->saved_in_large_burst = bfq_bfqq_in_large_burst(bfqq);
++ bfqq->bic->was_in_burst_list = !hlist_unhashed(&bfqq->burst_list_node);
++ bfqq->bic->cooperations++;
++ bfqq->bic->failed_cooperations = 0;
++}
++
++static inline void
++bfq_get_bic_reference(struct bfq_queue *bfqq)
++{
++ /*
++ * If bfqq->bic has a non-NULL value, the bic to which it belongs
++ * is about to begin using a shared bfq_queue.
++ */
++ if (bfqq->bic)
++ atomic_long_inc(&bfqq->bic->icq.ioc->refcount);
++}
++
++static void
++bfq_merge_bfqqs(struct bfq_data *bfqd, struct bfq_io_cq *bic,
++ struct bfq_queue *bfqq, struct bfq_queue *new_bfqq)
++{
++ bfq_log_bfqq(bfqd, bfqq, "merging with queue %lu",
++ (long unsigned)new_bfqq->pid);
++ /* Save weight raising and idle window of the merged queues */
++ bfq_bfqq_save_state(bfqq);
++ bfq_bfqq_save_state(new_bfqq);
++ if (bfq_bfqq_IO_bound(bfqq))
++ bfq_mark_bfqq_IO_bound(new_bfqq);
++ bfq_clear_bfqq_IO_bound(bfqq);
++ /*
++ * Grab a reference to the bic, to prevent it from being destroyed
++ * before being possibly touched by a bfq_split_bfqq().
++ */
++ bfq_get_bic_reference(bfqq);
++ bfq_get_bic_reference(new_bfqq);
++ /*
++ * Merge queues (that is, let bic redirect its requests to new_bfqq)
++ */
++ bic_set_bfqq(bic, new_bfqq, 1);
++ bfq_mark_bfqq_coop(new_bfqq);
++ /*
++ * new_bfqq now belongs to at least two bics (it is a shared queue):
++ * set new_bfqq->bic to NULL. bfqq either:
++ * - does not belong to any bic any more, and hence bfqq->bic must
++ * be set to NULL, or
++ * - is a queue whose owning bics have already been redirected to a
++ * different queue, hence the queue is destined to not belong to
++ * any bic soon and bfqq->bic is already NULL (therefore the next
++ * assignment causes no harm).
++ */
++ new_bfqq->bic = NULL;
++ bfqq->bic = NULL;
++ bfq_put_queue(bfqq);
++}
++
++static inline void bfq_bfqq_increase_failed_cooperations(struct bfq_queue *bfqq)
++{
++ struct bfq_io_cq *bic = bfqq->bic;
++ struct bfq_data *bfqd = bfqq->bfqd;
++
++ if (bic && bfq_bfqq_cooperations(bfqq) >= bfqd->bfq_coop_thresh) {
++ bic->failed_cooperations++;
++ if (bic->failed_cooperations >= bfqd->bfq_failed_cooperations)
++ bic->cooperations = 0;
++ }
++}
++
++static int bfq_allow_merge(struct request_queue *q, struct request *rq,
++ struct bio *bio)
++{
++ struct bfq_data *bfqd = q->elevator->elevator_data;
++ struct bfq_io_cq *bic;
++ struct bfq_queue *bfqq, *new_bfqq;
++
++ /*
++ * Disallow merge of a sync bio into an async request.
++ */
++ if (bfq_bio_sync(bio) && !rq_is_sync(rq))
++ return 0;
++
++ /*
++ * Lookup the bfqq that this bio will be queued with. Allow
++ * merge only if rq is queued there.
++ * Queue lock is held here.
++ */
++ bic = bfq_bic_lookup(bfqd, current->io_context);
++ if (bic == NULL)
++ return 0;
++
++ bfqq = bic_to_bfqq(bic, bfq_bio_sync(bio));
++ /*
++ * We take advantage of this function to perform an early merge
++ * of the queues of possible cooperating processes.
++ */
++ if (bfqq != NULL) {
++ new_bfqq = bfq_setup_cooperator(bfqd, bfqq, bio, false);
++ if (new_bfqq != NULL) {
++ bfq_merge_bfqqs(bfqd, bic, bfqq, new_bfqq);
++ /*
++ * If we get here, the bio will be queued in the
++ * shared queue, i.e., new_bfqq, so use new_bfqq
++ * to decide whether bio and rq can be merged.
++ */
++ bfqq = new_bfqq;
++ } else
++ bfq_bfqq_increase_failed_cooperations(bfqq);
++ }
++
++ return bfqq == RQ_BFQQ(rq);
++}
++
++static void __bfq_set_in_service_queue(struct bfq_data *bfqd,
++ struct bfq_queue *bfqq)
++{
++ if (bfqq != NULL) {
++ bfq_mark_bfqq_must_alloc(bfqq);
++ bfq_mark_bfqq_budget_new(bfqq);
++ bfq_clear_bfqq_fifo_expire(bfqq);
++
++ bfqd->budgets_assigned = (bfqd->budgets_assigned*7 + 256) / 8;
++
++ bfq_log_bfqq(bfqd, bfqq,
++ "set_in_service_queue, cur-budget = %lu",
++ bfqq->entity.budget);
++ }
++
++ bfqd->in_service_queue = bfqq;
++}
++
++/*
++ * Get and set a new queue for service.
++ */
++static struct bfq_queue *bfq_set_in_service_queue(struct bfq_data *bfqd)
++{
++ struct bfq_queue *bfqq = bfq_get_next_queue(bfqd);
++
++ __bfq_set_in_service_queue(bfqd, bfqq);
++ return bfqq;
++}
++
+ /*
+ * If enough samples have been computed, return the current max budget
+ * stored in bfqd, which is dynamically updated according to the
+@@ -1488,61 +1802,6 @@ static struct request *bfq_check_fifo(struct bfq_queue *bfqq)
+ return rq;
+ }
+
+-/* Must be called with the queue_lock held. */
+-static int bfqq_process_refs(struct bfq_queue *bfqq)
+-{
+- int process_refs, io_refs;
+-
+- io_refs = bfqq->allocated[READ] + bfqq->allocated[WRITE];
+- process_refs = atomic_read(&bfqq->ref) - io_refs - bfqq->entity.on_st;
+- BUG_ON(process_refs < 0);
+- return process_refs;
+-}
+-
+-static void bfq_setup_merge(struct bfq_queue *bfqq, struct bfq_queue *new_bfqq)
+-{
+- int process_refs, new_process_refs;
+- struct bfq_queue *__bfqq;
+-
+- /*
+- * If there are no process references on the new_bfqq, then it is
+- * unsafe to follow the ->new_bfqq chain as other bfqq's in the chain
+- * may have dropped their last reference (not just their last process
+- * reference).
+- */
+- if (!bfqq_process_refs(new_bfqq))
+- return;
+-
+- /* Avoid a circular list and skip interim queue merges. */
+- while ((__bfqq = new_bfqq->new_bfqq)) {
+- if (__bfqq == bfqq)
+- return;
+- new_bfqq = __bfqq;
+- }
+-
+- process_refs = bfqq_process_refs(bfqq);
+- new_process_refs = bfqq_process_refs(new_bfqq);
+- /*
+- * If the process for the bfqq has gone away, there is no
+- * sense in merging the queues.
+- */
+- if (process_refs == 0 || new_process_refs == 0)
+- return;
+-
+- /*
+- * Merge in the direction of the lesser amount of work.
+- */
+- if (new_process_refs >= process_refs) {
+- bfqq->new_bfqq = new_bfqq;
+- atomic_add(process_refs, &new_bfqq->ref);
+- } else {
+- new_bfqq->new_bfqq = bfqq;
+- atomic_add(new_process_refs, &bfqq->ref);
+- }
+- bfq_log_bfqq(bfqq->bfqd, bfqq, "scheduling merge with queue %d",
+- new_bfqq->pid);
+-}
+-
+ static inline unsigned long bfq_bfqq_budget_left(struct bfq_queue *bfqq)
+ {
+ struct bfq_entity *entity = &bfqq->entity;
+@@ -2269,7 +2528,7 @@ static inline bool bfq_bfqq_must_idle(struct bfq_queue *bfqq)
+ */
+ static struct bfq_queue *bfq_select_queue(struct bfq_data *bfqd)
+ {
+- struct bfq_queue *bfqq, *new_bfqq = NULL;
++ struct bfq_queue *bfqq;
+ struct request *next_rq;
+ enum bfqq_expiration reason = BFQ_BFQQ_BUDGET_TIMEOUT;
+
+@@ -2279,17 +2538,6 @@ static struct bfq_queue *bfq_select_queue(struct bfq_data *bfqd)
+
+ bfq_log_bfqq(bfqd, bfqq, "select_queue: already in-service queue");
+
+- /*
+- * If another queue has a request waiting within our mean seek
+- * distance, let it run. The expire code will check for close
+- * cooperators and put the close queue at the front of the
+- * service tree. If possible, merge the expiring queue with the
+- * new bfqq.
+- */
+- new_bfqq = bfq_close_cooperator(bfqd, bfqq);
+- if (new_bfqq != NULL && bfqq->new_bfqq == NULL)
+- bfq_setup_merge(bfqq, new_bfqq);
+-
+ if (bfq_may_expire_for_budg_timeout(bfqq) &&
+ !timer_pending(&bfqd->idle_slice_timer) &&
+ !bfq_bfqq_must_idle(bfqq))
+@@ -2328,10 +2576,7 @@ static struct bfq_queue *bfq_select_queue(struct bfq_data *bfqd)
+ bfq_clear_bfqq_wait_request(bfqq);
+ del_timer(&bfqd->idle_slice_timer);
+ }
+- if (new_bfqq == NULL)
+- goto keep_queue;
+- else
+- goto expire;
++ goto keep_queue;
+ }
+ }
+
+@@ -2340,40 +2585,30 @@ static struct bfq_queue *bfq_select_queue(struct bfq_data *bfqd)
+ * for a new request, or has requests waiting for a completion and
+ * may idle after their completion, then keep it anyway.
+ */
+- if (new_bfqq == NULL && (timer_pending(&bfqd->idle_slice_timer) ||
+- (bfqq->dispatched != 0 && bfq_bfqq_must_not_expire(bfqq)))) {
++ if (timer_pending(&bfqd->idle_slice_timer) ||
++ (bfqq->dispatched != 0 && bfq_bfqq_must_not_expire(bfqq))) {
+ bfqq = NULL;
+ goto keep_queue;
+- } else if (new_bfqq != NULL && timer_pending(&bfqd->idle_slice_timer)) {
+- /*
+- * Expiring the queue because there is a close cooperator,
+- * cancel timer.
+- */
+- bfq_clear_bfqq_wait_request(bfqq);
+- del_timer(&bfqd->idle_slice_timer);
+ }
+
+ reason = BFQ_BFQQ_NO_MORE_REQUESTS;
+ expire:
+ bfq_bfqq_expire(bfqd, bfqq, 0, reason);
+ new_queue:
+- bfqq = bfq_set_in_service_queue(bfqd, new_bfqq);
++ bfqq = bfq_set_in_service_queue(bfqd);
+ bfq_log(bfqd, "select_queue: new queue %d returned",
+ bfqq != NULL ? bfqq->pid : 0);
+ keep_queue:
+ return bfqq;
+ }
+
+-static void bfq_update_wr_data(struct bfq_data *bfqd,
+- struct bfq_queue *bfqq)
++static void bfq_update_wr_data(struct bfq_data *bfqd, struct bfq_queue *bfqq)
+ {
+- if (bfqq->wr_coeff > 1) { /* queue is being boosted */
+- struct bfq_entity *entity = &bfqq->entity;
+-
++ struct bfq_entity *entity = &bfqq->entity;
++ if (bfqq->wr_coeff > 1) { /* queue is being weight-raised */
+ bfq_log_bfqq(bfqd, bfqq,
+ "raising period dur %u/%u msec, old coeff %u, w %d(%d)",
+- jiffies_to_msecs(jiffies -
+- bfqq->last_wr_start_finish),
++ jiffies_to_msecs(jiffies - bfqq->last_wr_start_finish),
+ jiffies_to_msecs(bfqq->wr_cur_max_time),
+ bfqq->wr_coeff,
+ bfqq->entity.weight, bfqq->entity.orig_weight);
+@@ -2382,12 +2617,16 @@ static void bfq_update_wr_data(struct bfq_data *bfqd,
+ entity->orig_weight * bfqq->wr_coeff);
+ if (entity->ioprio_changed)
+ bfq_log_bfqq(bfqd, bfqq, "WARN: pending prio change");
++
+ /*
+ * If the queue was activated in a burst, or
+ * too much time has elapsed from the beginning
+- * of this weight-raising, then end weight raising.
++ * of this weight-raising period, or the queue has
++ * exceeded the acceptable number of cooperations,
++ * then end weight raising.
+ */
+ if (bfq_bfqq_in_large_burst(bfqq) ||
++ bfq_bfqq_cooperations(bfqq) >= bfqd->bfq_coop_thresh ||
+ time_is_before_jiffies(bfqq->last_wr_start_finish +
+ bfqq->wr_cur_max_time)) {
+ bfqq->last_wr_start_finish = jiffies;
+@@ -2396,11 +2635,13 @@ static void bfq_update_wr_data(struct bfq_data *bfqd,
+ bfqq->last_wr_start_finish,
+ jiffies_to_msecs(bfqq->wr_cur_max_time));
+ bfq_bfqq_end_wr(bfqq);
+- __bfq_entity_update_weight_prio(
+- bfq_entity_service_tree(entity),
+- entity);
+ }
+ }
++ /* Update weight both if it must be raised and if it must be lowered */
++ if ((entity->weight > entity->orig_weight) != (bfqq->wr_coeff > 1))
++ __bfq_entity_update_weight_prio(
++ bfq_entity_service_tree(entity),
++ entity);
+ }
+
+ /*
+@@ -2647,6 +2888,25 @@ static inline void bfq_init_icq(struct io_cq *icq)
+ struct bfq_io_cq *bic = icq_to_bic(icq);
+
+ bic->ttime.last_end_request = jiffies;
++ /*
++ * A newly created bic indicates that the process has just
++ * started doing I/O, and is probably mapping into memory its
++ * executable and libraries: it definitely needs weight raising.
++ * There is however the possibility that the process performs,
++ * for a while, I/O close to some other process. EQM intercepts
++ * this behavior and may merge the queue corresponding to the
++ * process with some other queue, BEFORE the weight of the queue
++ * is raised. Merged queues are not weight-raised (they are assumed
++ * to belong to processes that benefit only from high throughput).
++ * If the merge is basically the consequence of an accident, then
++ * the queue will be split soon and will get back its old weight.
++ * It is then important to write down somewhere that this queue
++ * does need weight raising, even if it did not make it to get its
++ * weight raised before being merged. To this purpose, we overload
++ * the field raising_time_left and assign 1 to it, to mark the queue
++ * as needing weight raising.
++ */
++ bic->wr_time_left = 1;
+ }
+
+ static void bfq_exit_icq(struct io_cq *icq)
+@@ -2660,6 +2920,13 @@ static void bfq_exit_icq(struct io_cq *icq)
+ }
+
+ if (bic->bfqq[BLK_RW_SYNC]) {
++ /*
++ * If the bic is using a shared queue, put the reference
++ * taken on the io_context when the bic started using a
++ * shared bfq_queue.
++ */
++ if (bfq_bfqq_coop(bic->bfqq[BLK_RW_SYNC]))
++ put_io_context(icq->ioc);
+ bfq_exit_bfqq(bfqd, bic->bfqq[BLK_RW_SYNC]);
+ bic->bfqq[BLK_RW_SYNC] = NULL;
+ }
+@@ -2952,6 +3219,10 @@ static void bfq_update_idle_window(struct bfq_data *bfqd,
+ if (!bfq_bfqq_sync(bfqq) || bfq_class_idle(bfqq))
+ return;
+
++ /* Idle window just restored, statistics are meaningless. */
++ if (bfq_bfqq_just_split(bfqq))
++ return;
++
+ enable_idle = bfq_bfqq_idle_window(bfqq);
+
+ if (atomic_read(&bic->icq.ioc->active_ref) == 0 ||
+@@ -2999,6 +3270,7 @@ static void bfq_rq_enqueued(struct bfq_data *bfqd, struct bfq_queue *bfqq,
+ if (bfqq->entity.service > bfq_max_budget(bfqd) / 8 ||
+ !BFQQ_SEEKY(bfqq))
+ bfq_update_idle_window(bfqd, bfqq, bic);
++ bfq_clear_bfqq_just_split(bfqq);
+
+ bfq_log_bfqq(bfqd, bfqq,
+ "rq_enqueued: idle_window=%d (seeky %d, mean %llu)",
+@@ -3059,12 +3331,47 @@ static void bfq_rq_enqueued(struct bfq_data *bfqd, struct bfq_queue *bfqq,
+ static void bfq_insert_request(struct request_queue *q, struct request *rq)
+ {
+ struct bfq_data *bfqd = q->elevator->elevator_data;
+- struct bfq_queue *bfqq = RQ_BFQQ(rq);
++ struct bfq_queue *bfqq = RQ_BFQQ(rq), *new_bfqq;
+
+ assert_spin_locked(bfqd->queue->queue_lock);
+
++ /*
++ * An unplug may trigger a requeue of a request from the device
++ * driver: make sure we are in process context while trying to
++ * merge two bfq_queues.
++ */
++ if (!in_interrupt()) {
++ new_bfqq = bfq_setup_cooperator(bfqd, bfqq, rq, true);
++ if (new_bfqq != NULL) {
++ if (bic_to_bfqq(RQ_BIC(rq), 1) != bfqq)
++ new_bfqq = bic_to_bfqq(RQ_BIC(rq), 1);
++ /*
++ * Release the request's reference to the old bfqq
++ * and make sure one is taken to the shared queue.
++ */
++ new_bfqq->allocated[rq_data_dir(rq)]++;
++ bfqq->allocated[rq_data_dir(rq)]--;
++ atomic_inc(&new_bfqq->ref);
++ bfq_put_queue(bfqq);
++ if (bic_to_bfqq(RQ_BIC(rq), 1) == bfqq)
++ bfq_merge_bfqqs(bfqd, RQ_BIC(rq),
++ bfqq, new_bfqq);
++ rq->elv.priv[1] = new_bfqq;
++ bfqq = new_bfqq;
++ } else
++ bfq_bfqq_increase_failed_cooperations(bfqq);
++ }
++
+ bfq_add_request(rq);
+
++ /*
++ * Here a newly-created bfq_queue has already started a weight-raising
++ * period: clear raising_time_left to prevent bfq_bfqq_save_state()
++ * from assigning it a full weight-raising period. See the detailed
++ * comments about this field in bfq_init_icq().
++ */
++ if (bfqq->bic != NULL)
++ bfqq->bic->wr_time_left = 0;
+ rq->fifo_time = jiffies + bfqd->bfq_fifo_expire[rq_is_sync(rq)];
+ list_add_tail(&rq->queuelist, &bfqq->fifo);
+
+@@ -3226,18 +3533,6 @@ static void bfq_put_request(struct request *rq)
+ }
+ }
+
+-static struct bfq_queue *
+-bfq_merge_bfqqs(struct bfq_data *bfqd, struct bfq_io_cq *bic,
+- struct bfq_queue *bfqq)
+-{
+- bfq_log_bfqq(bfqd, bfqq, "merging with queue %lu",
+- (long unsigned)bfqq->new_bfqq->pid);
+- bic_set_bfqq(bic, bfqq->new_bfqq, 1);
+- bfq_mark_bfqq_coop(bfqq->new_bfqq);
+- bfq_put_queue(bfqq);
+- return bic_to_bfqq(bic, 1);
+-}
+-
+ /*
+ * Returns NULL if a new bfqq should be allocated, or the old bfqq if this
+ * was the last process referring to said bfqq.
+@@ -3246,6 +3541,9 @@ static struct bfq_queue *
+ bfq_split_bfqq(struct bfq_io_cq *bic, struct bfq_queue *bfqq)
+ {
+ bfq_log_bfqq(bfqq->bfqd, bfqq, "splitting queue");
++
++ put_io_context(bic->icq.ioc);
++
+ if (bfqq_process_refs(bfqq) == 1) {
+ bfqq->pid = current->pid;
+ bfq_clear_bfqq_coop(bfqq);
+@@ -3274,6 +3572,7 @@ static int bfq_set_request(struct request_queue *q, struct request *rq,
+ struct bfq_queue *bfqq;
+ struct bfq_group *bfqg;
+ unsigned long flags;
++ bool split = false;
+
+ might_sleep_if(gfp_mask & __GFP_WAIT);
+
+@@ -3291,25 +3590,26 @@ new_queue:
+ if (bfqq == NULL || bfqq == &bfqd->oom_bfqq) {
+ bfqq = bfq_get_queue(bfqd, bfqg, is_sync, bic, gfp_mask);
+ bic_set_bfqq(bic, bfqq, is_sync);
++ if (split && is_sync) {
++ if ((bic->was_in_burst_list && bfqd->large_burst) ||
++ bic->saved_in_large_burst)
++ bfq_mark_bfqq_in_large_burst(bfqq);
++ else {
++ bfq_clear_bfqq_in_large_burst(bfqq);
++ if (bic->was_in_burst_list)
++ hlist_add_head(&bfqq->burst_list_node,
++ &bfqd->burst_list);
++ }
++ }
+ } else {
+- /*
+- * If the queue was seeky for too long, break it apart.
+- */
++ /* If the queue was seeky for too long, break it apart. */
+ if (bfq_bfqq_coop(bfqq) && bfq_bfqq_split_coop(bfqq)) {
+ bfq_log_bfqq(bfqd, bfqq, "breaking apart bfqq");
+ bfqq = bfq_split_bfqq(bic, bfqq);
++ split = true;
+ if (!bfqq)
+ goto new_queue;
+ }
+-
+- /*
+- * Check to see if this queue is scheduled to merge with
+- * another closely cooperating queue. The merging of queues
+- * happens here as it must be done in process context.
+- * The reference on new_bfqq was taken in merge_bfqqs.
+- */
+- if (bfqq->new_bfqq != NULL)
+- bfqq = bfq_merge_bfqqs(bfqd, bic, bfqq);
+ }
+
+ bfqq->allocated[rw]++;
+@@ -3320,6 +3620,26 @@ new_queue:
+ rq->elv.priv[0] = bic;
+ rq->elv.priv[1] = bfqq;
+
++ /*
++ * If a bfq_queue has only one process reference, it is owned
++ * by only one bfq_io_cq: we can set the bic field of the
++ * bfq_queue to the address of that structure. Also, if the
++ * queue has just been split, mark a flag so that the
++ * information is available to the other scheduler hooks.
++ */
++ if (likely(bfqq != &bfqd->oom_bfqq) && bfqq_process_refs(bfqq) == 1) {
++ bfqq->bic = bic;
++ if (split) {
++ bfq_mark_bfqq_just_split(bfqq);
++ /*
++ * If the queue has just been split from a shared
++ * queue, restore the idle window and the possible
++ * weight raising period.
++ */
++ bfq_bfqq_resume_state(bfqq, bic);
++ }
++ }
++
+ spin_unlock_irqrestore(q->queue_lock, flags);
+
+ return 0;
+diff --git a/block/bfq-sched.c b/block/bfq-sched.c
+index c343099..d0890c6 100644
+--- a/block/bfq-sched.c
++++ b/block/bfq-sched.c
+@@ -1085,34 +1085,6 @@ static struct bfq_queue *bfq_get_next_queue(struct bfq_data *bfqd)
+ return bfqq;
+ }
+
+-/*
+- * Forced extraction of the given queue.
+- */
+-static void bfq_get_next_queue_forced(struct bfq_data *bfqd,
+- struct bfq_queue *bfqq)
+-{
+- struct bfq_entity *entity;
+- struct bfq_sched_data *sd;
+-
+- BUG_ON(bfqd->in_service_queue != NULL);
+-
+- entity = &bfqq->entity;
+- /*
+- * Bubble up extraction/update from the leaf to the root.
+- */
+- for_each_entity(entity) {
+- sd = entity->sched_data;
+- bfq_update_budget(entity);
+- bfq_update_vtime(bfq_entity_service_tree(entity));
+- bfq_active_extract(bfq_entity_service_tree(entity), entity);
+- sd->in_service_entity = entity;
+- sd->next_in_service = NULL;
+- entity->service = 0;
+- }
+-
+- return;
+-}
+-
+ static void __bfq_bfqd_reset_in_service(struct bfq_data *bfqd)
+ {
+ if (bfqd->in_service_bic != NULL) {
+diff --git a/block/bfq.h b/block/bfq.h
+index 00feff7..96ffbf7 100644
+--- a/block/bfq.h
++++ b/block/bfq.h
+@@ -218,18 +218,21 @@ struct bfq_group;
+ * idle @bfq_queue with no outstanding requests, then
+ * the task associated with the queue it is deemed as
+ * soft real-time (see the comments to the function
+- * bfq_bfqq_softrt_next_start()).
++ * bfq_bfqq_softrt_next_start())
+ * @last_idle_bklogged: time of the last transition of the @bfq_queue from
+ * idle to backlogged
+ * @service_from_backlogged: cumulative service received from the @bfq_queue
+ * since the last transition from idle to
+ * backlogged
++ * @bic: pointer to the bfq_io_cq owning the bfq_queue, set to %NULL if the
++ * queue is shared
+ *
+- * A bfq_queue is a leaf request queue; it can be associated with an io_context
+- * or more, if it is async or shared between cooperating processes. @cgroup
+- * holds a reference to the cgroup, to be sure that it does not disappear while
+- * a bfqq still references it (mostly to avoid races between request issuing and
+- * task migration followed by cgroup destruction).
++ * A bfq_queue is a leaf request queue; it can be associated with an
++ * io_context or more, if it is async or shared between cooperating
++ * processes. @cgroup holds a reference to the cgroup, to be sure that it
++ * does not disappear while a bfqq still references it (mostly to avoid
++ * races between request issuing and task migration followed by cgroup
++ * destruction).
+ * All the fields are protected by the queue lock of the containing bfqd.
+ */
+ struct bfq_queue {
+@@ -269,6 +272,7 @@ struct bfq_queue {
+ unsigned int requests_within_timer;
+
+ pid_t pid;
++ struct bfq_io_cq *bic;
+
+ /* weight-raising fields */
+ unsigned long wr_cur_max_time;
+@@ -298,12 +302,42 @@ struct bfq_ttime {
+ * @icq: associated io_cq structure
+ * @bfqq: array of two process queues, the sync and the async
+ * @ttime: associated @bfq_ttime struct
++ * @wr_time_left: snapshot of the time left before weight raising ends
++ * for the sync queue associated to this process; this
++ * snapshot is taken to remember this value while the weight
++ * raising is suspended because the queue is merged with a
++ * shared queue, and is used to set @raising_cur_max_time
++ * when the queue is split from the shared queue and its
++ * weight is raised again
++ * @saved_idle_window: same purpose as the previous field for the idle
++ * window
++ * @saved_IO_bound: same purpose as the previous two fields for the I/O
++ * bound classification of a queue
++ * @saved_in_large_burst: same purpose as the previous fields for the
++ * value of the field keeping the queue's belonging
++ * to a large burst
++ * @was_in_burst_list: true if the queue belonged to a burst list
++ * before its merge with another cooperating queue
++ * @cooperations: counter of consecutive successful queue merges underwent
++ * by any of the process' @bfq_queues
++ * @failed_cooperations: counter of consecutive failed queue merges of any
++ * of the process' @bfq_queues
+ */
+ struct bfq_io_cq {
+ struct io_cq icq; /* must be the first member */
+ struct bfq_queue *bfqq[2];
+ struct bfq_ttime ttime;
+ int ioprio;
++
++ unsigned int wr_time_left;
++ bool saved_idle_window;
++ bool saved_IO_bound;
++
++ bool saved_in_large_burst;
++ bool was_in_burst_list;
++
++ unsigned int cooperations;
++ unsigned int failed_cooperations;
+ };
+
+ enum bfq_device_speed {
+@@ -536,7 +570,7 @@ enum bfqq_state_flags {
+ BFQ_BFQQ_FLAG_idle_window, /* slice idling enabled */
+ BFQ_BFQQ_FLAG_sync, /* synchronous queue */
+ BFQ_BFQQ_FLAG_budget_new, /* no completion with this budget */
+- BFQ_BFQQ_FLAG_IO_bound, /*
++ BFQ_BFQQ_FLAG_IO_bound, /*
+ * bfqq has timed-out at least once
+ * having consumed at most 2/10 of
+ * its budget
+@@ -549,12 +583,13 @@ enum bfqq_state_flags {
+ * bfqq has proved to be slow and
+ * seeky until budget timeout
+ */
+- BFQ_BFQQ_FLAG_softrt_update, /*
++ BFQ_BFQQ_FLAG_softrt_update, /*
+ * may need softrt-next-start
+ * update
+ */
+ BFQ_BFQQ_FLAG_coop, /* bfqq is shared */
+- BFQ_BFQQ_FLAG_split_coop, /* shared bfqq will be splitted */
++ BFQ_BFQQ_FLAG_split_coop, /* shared bfqq will be split */
++ BFQ_BFQQ_FLAG_just_split, /* queue has just been split */
+ };
+
+ #define BFQ_BFQQ_FNS(name) \
+@@ -583,6 +618,7 @@ BFQ_BFQQ_FNS(in_large_burst);
+ BFQ_BFQQ_FNS(constantly_seeky);
+ BFQ_BFQQ_FNS(coop);
+ BFQ_BFQQ_FNS(split_coop);
++BFQ_BFQQ_FNS(just_split);
+ BFQ_BFQQ_FNS(softrt_update);
+ #undef BFQ_BFQQ_FNS
+
+--
+2.1.4
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-07-17 15:24 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-07-17 15:24 UTC (permalink / raw
To: gentoo-commits
commit: d5f2323178576f3fb33aa8881f5c6475085fea06
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Jul 17 15:24:39 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Jul 17 15:24:39 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=d5f23231
Update for kdbus patch
0000_README | 2 +-
...kdbus-6-27-15.patch => 5015_kdbus-7-17-15.patch | 6808 ++++++++++++++------
2 files changed, 4790 insertions(+), 2020 deletions(-)
diff --git a/0000_README b/0000_README
index 784c55d..43154ce 100644
--- a/0000_README
+++ b/0000_README
@@ -91,6 +91,6 @@ Patch: 5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
From: https://github.com/graysky2/kernel_gcc_patch/
Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs.
-Patch: 5015_kdbus-6-27-15.patch
+Patch: 5015_kdbus-7-17-15.patch
From: https://lkml.org
Desc: Kernel-level IPC implementation
diff --git a/5015_kdbus-6-27-15.patch b/5015_kdbus-7-17-15.patch
similarity index 86%
rename from 5015_kdbus-6-27-15.patch
rename to 5015_kdbus-7-17-15.patch
index bc17abe..61102dd 100644
--- a/5015_kdbus-6-27-15.patch
+++ b/5015_kdbus-7-17-15.patch
@@ -8,6 +8,19 @@ index bc05482..e2127a7 100644
+ filesystems filesystems ia64 kdbus laptops mic misc-devices \
networking pcmcia prctl ptp spi timers vDSO video4linux \
watchdog
+diff --git a/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt b/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
+index f5a8ca2..750d577 100644
+--- a/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
++++ b/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
+@@ -1,7 +1,7 @@
+ * Marvell Armada 370 / Armada XP Ethernet Controller (NETA)
+
+ Required properties:
+-- compatible: "marvell,armada-370-neta" or "marvell,armada-xp-neta".
++- compatible: should be "marvell,armada-370-neta".
+ - reg: address and length of the register set for the device.
+ - interrupts: interrupt for the device
+ - phy: See ethernet.txt file in the same directory.
diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt
index 51f4221..ec7c81b 100644
--- a/Documentation/ioctl/ioctl-number.txt
@@ -30,10 +43,10 @@ index 0000000..b4a77cc
+*.html
diff --git a/Documentation/kdbus/Makefile b/Documentation/kdbus/Makefile
new file mode 100644
-index 0000000..af87641
+index 0000000..8caffe5
--- /dev/null
+++ b/Documentation/kdbus/Makefile
-@@ -0,0 +1,40 @@
+@@ -0,0 +1,44 @@
+DOCS := \
+ kdbus.xml \
+ kdbus.bus.xml \
@@ -74,12 +87,16 @@ index 0000000..af87641
+htmldocs: $(HTMLFILES)
+
+clean-files := $(MANFILES) $(HTMLFILES)
++
++# we don't support other %docs targets right now
++%docs:
++ @true
diff --git a/Documentation/kdbus/kdbus.bus.xml b/Documentation/kdbus/kdbus.bus.xml
new file mode 100644
-index 0000000..4b9a0ac
+index 0000000..83f1198
--- /dev/null
+++ b/Documentation/kdbus/kdbus.bus.xml
-@@ -0,0 +1,359 @@
+@@ -0,0 +1,344 @@
+<?xml version='1.0'?> <!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
@@ -280,21 +297,6 @@ index 0000000..4b9a0ac
+ </varlistentry>
+
+ <varlistentry>
-+ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_RECV</constant></term>
-+ <listitem>
-+ <para>
-+ An optional item that contains a set of required attach flags
-+ that connections must allow. This item is used as a
-+ negotiation measure during connection creation. If connections
-+ do not satisfy the bus requirements, they are not allowed on
-+ the bus. If not set, the bus does not require any metadata to
-+ be attached; in this case connections are free to set their
-+ own attach flags.
-+ </para>
-+ </listitem>
-+ </varlistentry>
-+
-+ <varlistentry>
+ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant></term>
+ <listitem>
+ <para>
@@ -441,10 +443,10 @@ index 0000000..4b9a0ac
+</refentry>
diff --git a/Documentation/kdbus/kdbus.connection.xml b/Documentation/kdbus/kdbus.connection.xml
new file mode 100644
-index 0000000..cefb419
+index 0000000..4bb5f30
--- /dev/null
+++ b/Documentation/kdbus/kdbus.connection.xml
-@@ -0,0 +1,1250 @@
+@@ -0,0 +1,1244 @@
+<?xml version='1.0'?> <!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
@@ -802,13 +804,7 @@ index 0000000..cefb419
+ Set the bits for metadata this connection permits to be sent to the
+ receiving peer. Only metadata items that are both allowed to be sent
+ by the sender and that are requested by the receiver will be attached
-+ to the message. Note, however, that the bus may optionally require
-+ some of those bits to be set. If the match fails, the ioctl will fail
-+ with <varname>errno</varname> set to
-+ <constant>ECONNREFUSED</constant>. In either case, when returning the
-+ field will be set to the mask of metadata items that are enforced by
-+ the bus with the <constant>KDBUS_FLAGS_KERNEL</constant> bit set as
-+ well.
++ to the message.
+ </para></listitem>
+ </varlistentry>
+
@@ -7474,9 +7470,20 @@ index d8afd29..02f7668 100644
M: Vivek Goyal <vgoyal@redhat.com>
M: Haren Myneni <hbabu@us.ibm.com>
diff --git a/Makefile b/Makefile
-index f5c8983..a1c8d57 100644
+index cef84c0..a1c8d57 100644
--- a/Makefile
+++ b/Makefile
+@@ -1,8 +1,8 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 2
++SUBLEVEL = 0
+ EXTRAVERSION =
+-NAME = Series 4800
++NAME = Hurr durr I'ma sheep
+
+ # *DOCUMENTATION*
+ # To see a list of typical targets execute "make help"
@@ -1343,6 +1343,7 @@ $(help-board-dirs): help-%:
%docs: scripts_basic FORCE
$(Q)$(MAKE) $(build)=scripts build_docproc
@@ -7485,6 +7492,2075 @@ index f5c8983..a1c8d57 100644
else # KBUILD_EXTMOD
+diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi
+index 06a2f2a..ec96f0b 100644
+--- a/arch/arm/boot/dts/armada-370-xp.dtsi
++++ b/arch/arm/boot/dts/armada-370-xp.dtsi
+@@ -270,6 +270,7 @@
+ };
+
+ eth0: ethernet@70000 {
++ compatible = "marvell,armada-370-neta";
+ reg = <0x70000 0x4000>;
+ interrupts = <8>;
+ clocks = <&gateclk 4>;
+@@ -285,6 +286,7 @@
+ };
+
+ eth1: ethernet@74000 {
++ compatible = "marvell,armada-370-neta";
+ reg = <0x74000 0x4000>;
+ interrupts = <10>;
+ clocks = <&gateclk 3>;
+diff --git a/arch/arm/boot/dts/armada-370.dtsi b/arch/arm/boot/dts/armada-370.dtsi
+index ca4257b..00b50db5 100644
+--- a/arch/arm/boot/dts/armada-370.dtsi
++++ b/arch/arm/boot/dts/armada-370.dtsi
+@@ -307,14 +307,6 @@
+ dmacap,memset;
+ };
+ };
+-
+- ethernet@70000 {
+- compatible = "marvell,armada-370-neta";
+- };
+-
+- ethernet@74000 {
+- compatible = "marvell,armada-370-neta";
+- };
+ };
+ };
+ };
+diff --git a/arch/arm/boot/dts/armada-xp-mv78260.dtsi b/arch/arm/boot/dts/armada-xp-mv78260.dtsi
+index c5fdc99..8479fdc 100644
+--- a/arch/arm/boot/dts/armada-xp-mv78260.dtsi
++++ b/arch/arm/boot/dts/armada-xp-mv78260.dtsi
+@@ -318,7 +318,7 @@
+ };
+
+ eth3: ethernet@34000 {
+- compatible = "marvell,armada-xp-neta";
++ compatible = "marvell,armada-370-neta";
+ reg = <0x34000 0x4000>;
+ interrupts = <14>;
+ clocks = <&gateclk 1>;
+diff --git a/arch/arm/boot/dts/armada-xp-mv78460.dtsi b/arch/arm/boot/dts/armada-xp-mv78460.dtsi
+index 0e24f1a..661d54c 100644
+--- a/arch/arm/boot/dts/armada-xp-mv78460.dtsi
++++ b/arch/arm/boot/dts/armada-xp-mv78460.dtsi
+@@ -356,7 +356,7 @@
+ };
+
+ eth3: ethernet@34000 {
+- compatible = "marvell,armada-xp-neta";
++ compatible = "marvell,armada-370-neta";
+ reg = <0x34000 0x4000>;
+ interrupts = <14>;
+ clocks = <&gateclk 1>;
+diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi
+index 8fdd6d7..013d63f 100644
+--- a/arch/arm/boot/dts/armada-xp.dtsi
++++ b/arch/arm/boot/dts/armada-xp.dtsi
+@@ -177,7 +177,7 @@
+ };
+
+ eth2: ethernet@30000 {
+- compatible = "marvell,armada-xp-neta";
++ compatible = "marvell,armada-370-neta";
+ reg = <0x30000 0x4000>;
+ interrupts = <12>;
+ clocks = <&gateclk 2>;
+@@ -220,14 +220,6 @@
+ };
+ };
+
+- ethernet@70000 {
+- compatible = "marvell,armada-xp-neta";
+- };
+-
+- ethernet@74000 {
+- compatible = "marvell,armada-xp-neta";
+- };
+-
+ xor@f0900 {
+ compatible = "marvell,orion-xor";
+ reg = <0xF0900 0x100
+diff --git a/arch/arm/boot/dts/sun5i-a10s.dtsi b/arch/arm/boot/dts/sun5i-a10s.dtsi
+index 3794ca1..2fd8988 100644
+--- a/arch/arm/boot/dts/sun5i-a10s.dtsi
++++ b/arch/arm/boot/dts/sun5i-a10s.dtsi
+@@ -573,7 +573,7 @@
+ };
+
+ rtp: rtp@01c25000 {
+- compatible = "allwinner,sun5i-a13-ts";
++ compatible = "allwinner,sun4i-a10-ts";
+ reg = <0x01c25000 0x100>;
+ interrupts = <29>;
+ #thermal-sensor-cells = <0>;
+diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
+index 5098185..883cb48 100644
+--- a/arch/arm/boot/dts/sun5i-a13.dtsi
++++ b/arch/arm/boot/dts/sun5i-a13.dtsi
+@@ -555,7 +555,7 @@
+ };
+
+ rtp: rtp@01c25000 {
+- compatible = "allwinner,sun5i-a13-ts";
++ compatible = "allwinner,sun4i-a10-ts";
+ reg = <0x01c25000 0x100>;
+ interrupts = <29>;
+ #thermal-sensor-cells = <0>;
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 2b4847c..fdd1817 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -1042,7 +1042,7 @@
+ };
+
+ rtp: rtp@01c25000 {
+- compatible = "allwinner,sun5i-a13-ts";
++ compatible = "allwinner,sun4i-a10-ts";
+ reg = <0x01c25000 0x100>;
+ interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+ #thermal-sensor-cells = <0>;
+diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
+index f7db3a5..79caf79 100644
+--- a/arch/arm/kvm/interrupts.S
++++ b/arch/arm/kvm/interrupts.S
+@@ -170,9 +170,13 @@ __kvm_vcpu_return:
+ @ Don't trap coprocessor accesses for host kernel
+ set_hstr vmexit
+ set_hdcr vmexit
+- set_hcptr vmexit, (HCPTR_TTA | HCPTR_TCP(10) | HCPTR_TCP(11)), after_vfp_restore
++ set_hcptr vmexit, (HCPTR_TTA | HCPTR_TCP(10) | HCPTR_TCP(11))
+
+ #ifdef CONFIG_VFPv3
++ @ Save floating point registers we if let guest use them.
++ tst r2, #(HCPTR_TCP(10) | HCPTR_TCP(11))
++ bne after_vfp_restore
++
+ @ Switch VFP/NEON hardware state to the host's
+ add r7, vcpu, #VCPU_VFP_GUEST
+ store_vfp_state r7
+@@ -184,8 +188,6 @@ after_vfp_restore:
+ @ Restore FPEXC_EN which we clobbered on entry
+ pop {r2}
+ VFPFMXR FPEXC, r2
+-#else
+-after_vfp_restore:
+ #endif
+
+ @ Reset Hyp-role
+@@ -481,7 +483,7 @@ switch_to_guest_vfp:
+ push {r3-r7}
+
+ @ NEON/VFP used. Turn on VFP access.
+- set_hcptr vmtrap, (HCPTR_TCP(10) | HCPTR_TCP(11))
++ set_hcptr vmexit, (HCPTR_TCP(10) | HCPTR_TCP(11))
+
+ @ Switch VFP/NEON hardware state to the guest's
+ add r7, r0, #VCPU_VFP_HOST
+diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S
+index 48efe2e..35e4a3a 100644
+--- a/arch/arm/kvm/interrupts_head.S
++++ b/arch/arm/kvm/interrupts_head.S
+@@ -591,13 +591,8 @@ ARM_BE8(rev r6, r6 )
+ .endm
+
+ /* Configures the HCPTR (Hyp Coprocessor Trap Register) on entry/return
+- * (hardware reset value is 0). Keep previous value in r2.
+- * An ISB is emited on vmexit/vmtrap, but executed on vmexit only if
+- * VFP wasn't already enabled (always executed on vmtrap).
+- * If a label is specified with vmexit, it is branched to if VFP wasn't
+- * enabled.
+- */
+-.macro set_hcptr operation, mask, label = none
++ * (hardware reset value is 0). Keep previous value in r2. */
++.macro set_hcptr operation, mask
+ mrc p15, 4, r2, c1, c1, 2
+ ldr r3, =\mask
+ .if \operation == vmentry
+@@ -606,17 +601,6 @@ ARM_BE8(rev r6, r6 )
+ bic r3, r2, r3 @ Don't trap defined coproc-accesses
+ .endif
+ mcr p15, 4, r3, c1, c1, 2
+- .if \operation != vmentry
+- .if \operation == vmexit
+- tst r2, #(HCPTR_TCP(10) | HCPTR_TCP(11))
+- beq 1f
+- .endif
+- isb
+- .if \label != none
+- b \label
+- .endif
+-1:
+- .endif
+ .endm
+
+ /* Configures the HDCR (Hyp Debug Configuration Register) on entry/return
+diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c
+index 531e922..02fa8ef 100644
+--- a/arch/arm/kvm/psci.c
++++ b/arch/arm/kvm/psci.c
+@@ -230,6 +230,10 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
+ case PSCI_0_2_FN64_AFFINITY_INFO:
+ val = kvm_psci_vcpu_affinity_info(vcpu);
+ break;
++ case PSCI_0_2_FN_MIGRATE:
++ case PSCI_0_2_FN64_MIGRATE:
++ val = PSCI_RET_NOT_SUPPORTED;
++ break;
+ case PSCI_0_2_FN_MIGRATE_INFO_TYPE:
+ /*
+ * Trusted OS is MP hence does not require migration
+@@ -238,6 +242,10 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
+ */
+ val = PSCI_0_2_TOS_MP;
+ break;
++ case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU:
++ case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU:
++ val = PSCI_RET_NOT_SUPPORTED;
++ break;
+ case PSCI_0_2_FN_SYSTEM_OFF:
+ kvm_psci_system_off(vcpu);
+ /*
+@@ -263,8 +271,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
+ ret = 0;
+ break;
+ default:
+- val = PSCI_RET_NOT_SUPPORTED;
+- break;
++ return -EINVAL;
+ }
+
+ *vcpu_reg(vcpu, 0) = val;
+@@ -284,9 +291,12 @@ static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu)
+ case KVM_PSCI_FN_CPU_ON:
+ val = kvm_psci_vcpu_on(vcpu);
+ break;
+- default:
++ case KVM_PSCI_FN_CPU_SUSPEND:
++ case KVM_PSCI_FN_MIGRATE:
+ val = PSCI_RET_NOT_SUPPORTED;
+ break;
++ default:
++ return -EINVAL;
+ }
+
+ *vcpu_reg(vcpu, 0) = val;
+diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
+index a2e8ef3..469a150 100644
+--- a/arch/arm/mach-imx/clk-imx6q.c
++++ b/arch/arm/mach-imx/clk-imx6q.c
+@@ -443,7 +443,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
+ clk[IMX6QDL_CLK_GPMI_IO] = imx_clk_gate2("gpmi_io", "enfc", base + 0x78, 28);
+ clk[IMX6QDL_CLK_GPMI_APB] = imx_clk_gate2("gpmi_apb", "usdhc3", base + 0x78, 30);
+ clk[IMX6QDL_CLK_ROM] = imx_clk_gate2("rom", "ahb", base + 0x7c, 0);
+- clk[IMX6QDL_CLK_SATA] = imx_clk_gate2("sata", "ahb", base + 0x7c, 4);
++ clk[IMX6QDL_CLK_SATA] = imx_clk_gate2("sata", "ipg", base + 0x7c, 4);
+ clk[IMX6QDL_CLK_SDMA] = imx_clk_gate2("sdma", "ahb", base + 0x7c, 6);
+ clk[IMX6QDL_CLK_SPBA] = imx_clk_gate2("spba", "ipg", base + 0x7c, 12);
+ clk[IMX6QDL_CLK_SPDIF] = imx_clk_gate2("spdif", "spdif_podf", base + 0x7c, 14);
+diff --git a/arch/arm/mach-mvebu/pm-board.c b/arch/arm/mach-mvebu/pm-board.c
+index 301ab38..6dfd4ab 100644
+--- a/arch/arm/mach-mvebu/pm-board.c
++++ b/arch/arm/mach-mvebu/pm-board.c
+@@ -43,9 +43,6 @@ static void mvebu_armada_xp_gp_pm_enter(void __iomem *sdram_reg, u32 srcmd)
+ for (i = 0; i < ARMADA_XP_GP_PIC_NR_GPIOS; i++)
+ ackcmd |= BIT(pic_raw_gpios[i]);
+
+- srcmd = cpu_to_le32(srcmd);
+- ackcmd = cpu_to_le32(ackcmd);
+-
+ /*
+ * Wait a while, the PIC needs quite a bit of time between the
+ * two GPIO commands.
+diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
+index 7469347..88de2dc 100644
+--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
++++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
+@@ -34,7 +34,6 @@
+ #include "iomap.h"
+ #include "irq.h"
+ #include "pm.h"
+-#include "reset.h"
+ #include "sleep.h"
+
+ #ifdef CONFIG_PM_SLEEP
+@@ -71,13 +70,15 @@ static struct cpuidle_driver tegra_idle_driver = {
+
+ #ifdef CONFIG_PM_SLEEP
+ #ifdef CONFIG_SMP
++static void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
++
+ static int tegra20_reset_sleeping_cpu_1(void)
+ {
+ int ret = 0;
+
+ tegra_pen_lock();
+
+- if (readb(tegra20_cpu1_resettable_status) == CPU_RESETTABLE)
++ if (readl(pmc + PMC_SCRATCH41) == CPU_RESETTABLE)
+ tegra20_cpu_shutdown(1);
+ else
+ ret = -EINVAL;
+diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S
+index e3070fd..71be4af 100644
+--- a/arch/arm/mach-tegra/reset-handler.S
++++ b/arch/arm/mach-tegra/reset-handler.S
+@@ -169,10 +169,10 @@ after_errata:
+ cmp r6, #TEGRA20
+ bne 1f
+ /* If not CPU0, don't let CPU0 reset CPU1 now that CPU1 is coming up. */
+- mov32 r5, TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET
+- mov r0, #CPU_NOT_RESETTABLE
++ mov32 r5, TEGRA_PMC_BASE
++ mov r0, #0
+ cmp r10, #0
+- strneb r0, [r5, #__tegra20_cpu1_resettable_status_offset]
++ strne r0, [r5, #PMC_SCRATCH41]
+ 1:
+ #endif
+
+@@ -281,10 +281,6 @@ __tegra_cpu_reset_handler_data:
+ .rept TEGRA_RESET_DATA_SIZE
+ .long 0
+ .endr
+- .globl __tegra20_cpu1_resettable_status_offset
+- .equ __tegra20_cpu1_resettable_status_offset, \
+- . - __tegra_cpu_reset_handler_start
+- .byte 0
+ .align L1_CACHE_SHIFT
+
+ ENTRY(__tegra_cpu_reset_handler_end)
+diff --git a/arch/arm/mach-tegra/reset.h b/arch/arm/mach-tegra/reset.h
+index 29c3dec..76a9343 100644
+--- a/arch/arm/mach-tegra/reset.h
++++ b/arch/arm/mach-tegra/reset.h
+@@ -35,7 +35,6 @@ extern unsigned long __tegra_cpu_reset_handler_data[TEGRA_RESET_DATA_SIZE];
+
+ void __tegra_cpu_reset_handler_start(void);
+ void __tegra_cpu_reset_handler(void);
+-void __tegra20_cpu1_resettable_status_offset(void);
+ void __tegra_cpu_reset_handler_end(void);
+ void tegra_secondary_startup(void);
+
+@@ -48,9 +47,6 @@ void tegra_secondary_startup(void);
+ (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \
+ ((u32)&__tegra_cpu_reset_handler_data[TEGRA_RESET_MASK_LP2] - \
+ (u32)__tegra_cpu_reset_handler_start)))
+-#define tegra20_cpu1_resettable_status \
+- (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \
+- (u32)__tegra20_cpu1_resettable_status_offset))
+ #endif
+
+ #define tegra_cpu_reset_handler_offset \
+diff --git a/arch/arm/mach-tegra/sleep-tegra20.S b/arch/arm/mach-tegra/sleep-tegra20.S
+index e6b684e..be4bc5f 100644
+--- a/arch/arm/mach-tegra/sleep-tegra20.S
++++ b/arch/arm/mach-tegra/sleep-tegra20.S
+@@ -97,10 +97,9 @@ ENDPROC(tegra20_hotplug_shutdown)
+ ENTRY(tegra20_cpu_shutdown)
+ cmp r0, #0
+ reteq lr @ must not be called for CPU 0
+- mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
+- ldr r2, =__tegra20_cpu1_resettable_status_offset
++ mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
+ mov r12, #CPU_RESETTABLE
+- strb r12, [r1, r2]
++ str r12, [r1]
+
+ cpu_to_halt_reg r1, r0
+ ldr r3, =TEGRA_FLOW_CTRL_VIRT
+@@ -183,41 +182,38 @@ ENDPROC(tegra_pen_unlock)
+ /*
+ * tegra20_cpu_clear_resettable(void)
+ *
+- * Called to clear the "resettable soon" flag in IRAM variable when
++ * Called to clear the "resettable soon" flag in PMC_SCRATCH41 when
+ * it is expected that the secondary CPU will be idle soon.
+ */
+ ENTRY(tegra20_cpu_clear_resettable)
+- mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
+- ldr r2, =__tegra20_cpu1_resettable_status_offset
++ mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
+ mov r12, #CPU_NOT_RESETTABLE
+- strb r12, [r1, r2]
++ str r12, [r1]
+ ret lr
+ ENDPROC(tegra20_cpu_clear_resettable)
+
+ /*
+ * tegra20_cpu_set_resettable_soon(void)
+ *
+- * Called to set the "resettable soon" flag in IRAM variable when
++ * Called to set the "resettable soon" flag in PMC_SCRATCH41 when
+ * it is expected that the secondary CPU will be idle soon.
+ */
+ ENTRY(tegra20_cpu_set_resettable_soon)
+- mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
+- ldr r2, =__tegra20_cpu1_resettable_status_offset
++ mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
+ mov r12, #CPU_RESETTABLE_SOON
+- strb r12, [r1, r2]
++ str r12, [r1]
+ ret lr
+ ENDPROC(tegra20_cpu_set_resettable_soon)
+
+ /*
+ * tegra20_cpu_is_resettable_soon(void)
+ *
+- * Returns true if the "resettable soon" flag in IRAM variable has been
++ * Returns true if the "resettable soon" flag in PMC_SCRATCH41 has been
+ * set because it is expected that the secondary CPU will be idle soon.
+ */
+ ENTRY(tegra20_cpu_is_resettable_soon)
+- mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
+- ldr r2, =__tegra20_cpu1_resettable_status_offset
+- ldrb r12, [r1, r2]
++ mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
++ ldr r12, [r1]
+ cmp r12, #CPU_RESETTABLE_SOON
+ moveq r0, #1
+ movne r0, #0
+@@ -260,10 +256,9 @@ ENTRY(tegra20_sleep_cpu_secondary_finish)
+ mov r0, #TEGRA_FLUSH_CACHE_LOUIS
+ bl tegra_disable_clean_inv_dcache
+
+- mov32 r0, TEGRA_IRAM_RESET_BASE_VIRT
+- ldr r4, =__tegra20_cpu1_resettable_status_offset
++ mov32 r0, TEGRA_PMC_VIRT + PMC_SCRATCH41
+ mov r3, #CPU_RESETTABLE
+- strb r3, [r0, r4]
++ str r3, [r0]
+
+ bl tegra_cpu_do_idle
+
+@@ -279,10 +274,10 @@ ENTRY(tegra20_sleep_cpu_secondary_finish)
+
+ bl tegra_pen_lock
+
+- mov32 r0, TEGRA_IRAM_RESET_BASE_VIRT
+- ldr r4, =__tegra20_cpu1_resettable_status_offset
++ mov32 r3, TEGRA_PMC_VIRT
++ add r0, r3, #PMC_SCRATCH41
+ mov r3, #CPU_NOT_RESETTABLE
+- strb r3, [r0, r4]
++ str r3, [r0]
+
+ bl tegra_pen_unlock
+
+diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h
+index 0d59360..92d46ec 100644
+--- a/arch/arm/mach-tegra/sleep.h
++++ b/arch/arm/mach-tegra/sleep.h
+@@ -18,7 +18,6 @@
+ #define __MACH_TEGRA_SLEEP_H
+
+ #include "iomap.h"
+-#include "irammap.h"
+
+ #define TEGRA_ARM_PERIF_VIRT (TEGRA_ARM_PERIF_BASE - IO_CPU_PHYS \
+ + IO_CPU_VIRT)
+@@ -30,9 +29,6 @@
+ + IO_APB_VIRT)
+ #define TEGRA_PMC_VIRT (TEGRA_PMC_BASE - IO_APB_PHYS + IO_APB_VIRT)
+
+-#define TEGRA_IRAM_RESET_BASE_VIRT (IO_IRAM_VIRT + \
+- TEGRA_IRAM_RESET_HANDLER_OFFSET)
+-
+ /* PMC_SCRATCH37-39 and 41 are used for tegra_pen_lock and idle */
+ #define PMC_SCRATCH37 0x130
+ #define PMC_SCRATCH38 0x134
+diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
+index afc96ec..9488fa5 100644
+--- a/arch/mips/include/asm/mach-generic/spaces.h
++++ b/arch/mips/include/asm/mach-generic/spaces.h
+@@ -94,11 +94,7 @@
+ #endif
+
+ #ifndef FIXADDR_TOP
+-#ifdef CONFIG_KVM_GUEST
+-#define FIXADDR_TOP ((unsigned long)(long)(int)0x7ffe0000)
+-#else
+ #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000)
+ #endif
+-#endif
+
+ #endif /* __ASM_MACH_GENERIC_SPACES_H */
+diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
+index 52f205a..bb68e8d 100644
+--- a/arch/mips/kvm/mips.c
++++ b/arch/mips/kvm/mips.c
+@@ -982,7 +982,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
+
+ /* If nothing is dirty, don't bother messing with page tables. */
+ if (is_dirty) {
+- memslot = id_to_memslot(kvm->memslots, log->slot);
++ memslot = &kvm->memslots->memslots[log->slot];
+
+ ga = memslot->base_gfn << PAGE_SHIFT;
+ ga_end = ga + (memslot->npages << PAGE_SHIFT);
+diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
+index d90893b..12b6384 100644
+--- a/arch/powerpc/perf/core-book3s.c
++++ b/arch/powerpc/perf/core-book3s.c
+@@ -131,16 +131,7 @@ static void pmao_restore_workaround(bool ebb) { }
+
+ static bool regs_use_siar(struct pt_regs *regs)
+ {
+- /*
+- * When we take a performance monitor exception the regs are setup
+- * using perf_read_regs() which overloads some fields, in particular
+- * regs->result to tell us whether to use SIAR.
+- *
+- * However if the regs are from another exception, eg. a syscall, then
+- * they have not been setup using perf_read_regs() and so regs->result
+- * is something random.
+- */
+- return ((TRAP(regs) == 0xf00) && regs->result);
++ return !!regs->result;
+ }
+
+ /*
+diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
+index 49b7445..9f73c80 100644
+--- a/arch/s390/kernel/crash_dump.c
++++ b/arch/s390/kernel/crash_dump.c
+@@ -415,7 +415,7 @@ static void *nt_s390_vx_low(void *ptr, __vector128 *vx_regs)
+ ptr += len;
+ /* Copy lower halves of SIMD registers 0-15 */
+ for (i = 0; i < 16; i++) {
+- memcpy(ptr, &vx_regs[i].u[2], 8);
++ memcpy(ptr, &vx_regs[i], 8);
+ ptr += 8;
+ }
+ return ptr;
+diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
+index b745a10..9de4726 100644
+--- a/arch/s390/kvm/interrupt.c
++++ b/arch/s390/kvm/interrupt.c
+@@ -1061,7 +1061,7 @@ static int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
+ if (sclp_has_sigpif())
+ return __inject_extcall_sigpif(vcpu, src_id);
+
+- if (test_and_set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs))
++ if (!test_and_set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs))
+ return -EBUSY;
+ *extcall = irq->u.extcall;
+ atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
+@@ -1606,9 +1606,6 @@ void kvm_s390_clear_float_irqs(struct kvm *kvm)
+ int i;
+
+ spin_lock(&fi->lock);
+- fi->pending_irqs = 0;
+- memset(&fi->srv_signal, 0, sizeof(fi->srv_signal));
+- memset(&fi->mchk, 0, sizeof(fi->mchk));
+ for (i = 0; i < FIRQ_LIST_COUNT; i++)
+ clear_irq_list(&fi->lists[i]);
+ for (i = 0; i < FIRQ_MAX_COUNT; i++)
+diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
+index 9afb9d6..55423d8 100644
+--- a/arch/s390/net/bpf_jit_comp.c
++++ b/arch/s390/net/bpf_jit_comp.c
+@@ -227,7 +227,7 @@ static inline void reg_set_seen(struct bpf_jit *jit, u32 b1)
+ ({ \
+ /* Branch instruction needs 6 bytes */ \
+ int rel = (addrs[i + off + 1] - (addrs[i + 1] - 6)) / 2;\
+- _EMIT6(op1 | reg(b1, b2) << 16 | (rel & 0xffff), op2 | mask); \
++ _EMIT6(op1 | reg(b1, b2) << 16 | rel, op2 | mask); \
+ REG_SET_SEEN(b1); \
+ REG_SET_SEEN(b2); \
+ })
+diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
+index 41b06fc..f4a555b 100644
+--- a/arch/x86/include/asm/kvm_host.h
++++ b/arch/x86/include/asm/kvm_host.h
+@@ -591,7 +591,7 @@ struct kvm_arch {
+ struct kvm_pic *vpic;
+ struct kvm_ioapic *vioapic;
+ struct kvm_pit *vpit;
+- atomic_t vapics_in_nmi_mode;
++ int vapics_in_nmi_mode;
+ struct mutex apic_map_lock;
+ struct kvm_apic_map *apic_map;
+
+diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
+index aa4e3a7..4f7001f 100644
+--- a/arch/x86/kernel/cpu/perf_event.c
++++ b/arch/x86/kernel/cpu/perf_event.c
+@@ -270,7 +270,11 @@ msr_fail:
+
+ static void hw_perf_event_destroy(struct perf_event *event)
+ {
+- x86_release_hardware();
++ if (atomic_dec_and_mutex_lock(&active_events, &pmc_reserve_mutex)) {
++ release_pmc_hardware();
++ release_ds_buffers();
++ mutex_unlock(&pmc_reserve_mutex);
++ }
+ }
+
+ void hw_perf_lbr_event_destroy(struct perf_event *event)
+@@ -320,35 +324,6 @@ set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event *event)
+ return x86_pmu_extra_regs(val, event);
+ }
+
+-int x86_reserve_hardware(void)
+-{
+- int err = 0;
+-
+- if (!atomic_inc_not_zero(&active_events)) {
+- mutex_lock(&pmc_reserve_mutex);
+- if (atomic_read(&active_events) == 0) {
+- if (!reserve_pmc_hardware())
+- err = -EBUSY;
+- else
+- reserve_ds_buffers();
+- }
+- if (!err)
+- atomic_inc(&active_events);
+- mutex_unlock(&pmc_reserve_mutex);
+- }
+-
+- return err;
+-}
+-
+-void x86_release_hardware(void)
+-{
+- if (atomic_dec_and_mutex_lock(&active_events, &pmc_reserve_mutex)) {
+- release_pmc_hardware();
+- release_ds_buffers();
+- mutex_unlock(&pmc_reserve_mutex);
+- }
+-}
+-
+ /*
+ * Check if we can create event of a certain type (that no conflicting events
+ * are present).
+@@ -361,10 +336,9 @@ int x86_add_exclusive(unsigned int what)
+ return 0;
+
+ mutex_lock(&pmc_reserve_mutex);
+- for (i = 0; i < ARRAY_SIZE(x86_pmu.lbr_exclusive); i++) {
++ for (i = 0; i < ARRAY_SIZE(x86_pmu.lbr_exclusive); i++)
+ if (i != what && atomic_read(&x86_pmu.lbr_exclusive[i]))
+ goto out;
+- }
+
+ atomic_inc(&x86_pmu.lbr_exclusive[what]);
+ ret = 0;
+@@ -553,7 +527,19 @@ static int __x86_pmu_event_init(struct perf_event *event)
+ if (!x86_pmu_initialized())
+ return -ENODEV;
+
+- err = x86_reserve_hardware();
++ err = 0;
++ if (!atomic_inc_not_zero(&active_events)) {
++ mutex_lock(&pmc_reserve_mutex);
++ if (atomic_read(&active_events) == 0) {
++ if (!reserve_pmc_hardware())
++ err = -EBUSY;
++ else
++ reserve_ds_buffers();
++ }
++ if (!err)
++ atomic_inc(&active_events);
++ mutex_unlock(&pmc_reserve_mutex);
++ }
+ if (err)
+ return err;
+
+diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h
+index f068695..ef78516 100644
+--- a/arch/x86/kernel/cpu/perf_event.h
++++ b/arch/x86/kernel/cpu/perf_event.h
+@@ -703,10 +703,6 @@ int x86_add_exclusive(unsigned int what);
+
+ void x86_del_exclusive(unsigned int what);
+
+-int x86_reserve_hardware(void);
+-
+-void x86_release_hardware(void);
+-
+ void hw_perf_lbr_event_destroy(struct perf_event *event);
+
+ int x86_setup_perfctr(struct perf_event *event);
+diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
+index 2813ea0..a1e35c9 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel.c
++++ b/arch/x86/kernel/cpu/perf_event_intel.c
+@@ -3253,8 +3253,6 @@ __init int intel_pmu_init(void)
+
+ case 61: /* 14nm Broadwell Core-M */
+ case 86: /* 14nm Broadwell Xeon D */
+- case 71: /* 14nm Broadwell + GT3e (Intel Iris Pro graphics) */
+- case 79: /* 14nm Broadwell Server */
+ x86_pmu.late_ack = true;
+ memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
+ memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
+@@ -3324,13 +3322,13 @@ __init int intel_pmu_init(void)
+ * counter, so do not extend mask to generic counters
+ */
+ for_each_event_constraint(c, x86_pmu.event_constraints) {
+- if (c->cmask == FIXED_EVENT_FLAGS
+- && c->idxmsk64 != INTEL_PMC_MSK_FIXED_REF_CYCLES) {
+- c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
++ if (c->cmask != FIXED_EVENT_FLAGS
++ || c->idxmsk64 == INTEL_PMC_MSK_FIXED_REF_CYCLES) {
++ continue;
+ }
+- c->idxmsk64 &=
+- ~(~0UL << (INTEL_PMC_IDX_FIXED + x86_pmu.num_counters_fixed));
+- c->weight = hweight64(c->idxmsk64);
++
++ c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
++ c->weight += x86_pmu.num_counters;
+ }
+ }
+
+diff --git a/arch/x86/kernel/cpu/perf_event_intel_bts.c b/arch/x86/kernel/cpu/perf_event_intel_bts.c
+index 7795f3f..ac1f0c5 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel_bts.c
++++ b/arch/x86/kernel/cpu/perf_event_intel_bts.c
+@@ -483,26 +483,17 @@ static int bts_event_add(struct perf_event *event, int mode)
+
+ static void bts_event_destroy(struct perf_event *event)
+ {
+- x86_release_hardware();
+ x86_del_exclusive(x86_lbr_exclusive_bts);
+ }
+
+ static int bts_event_init(struct perf_event *event)
+ {
+- int ret;
+-
+ if (event->attr.type != bts_pmu.type)
+ return -ENOENT;
+
+ if (x86_add_exclusive(x86_lbr_exclusive_bts))
+ return -EBUSY;
+
+- ret = x86_reserve_hardware();
+- if (ret) {
+- x86_del_exclusive(x86_lbr_exclusive_bts);
+- return ret;
+- }
+-
+ event->destroy = bts_event_destroy;
+
+ return 0;
+diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
+index 7e429c9..53eeb22 100644
+--- a/arch/x86/kernel/head_32.S
++++ b/arch/x86/kernel/head_32.S
+@@ -62,16 +62,9 @@
+ #define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
+ #endif
+
+-/*
+- * Number of possible pages in the lowmem region.
+- *
+- * We shift 2 by 31 instead of 1 by 32 to the left in order to avoid a
+- * gas warning about overflowing shift count when gas has been compiled
+- * with only a host target support using a 32-bit type for internal
+- * representation.
+- */
+-LOWMEM_PAGES = (((2<<31) - __PAGE_OFFSET) >> PAGE_SHIFT)
+-
++/* Number of possible pages in the lowmem region */
++LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT)
++
+ /* Enough space to fit pagetables for the low memory linear map */
+ MAPPING_BEYOND_END = PAGE_TABLE_SIZE(LOWMEM_PAGES) << PAGE_SHIFT
+
+diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
+index f90952f..4dce6f8 100644
+--- a/arch/x86/kvm/i8254.c
++++ b/arch/x86/kvm/i8254.c
+@@ -305,7 +305,7 @@ static void pit_do_work(struct kthread_work *work)
+ * LVT0 to NMI delivery. Other PIC interrupts are just sent to
+ * VCPU0, and only if its LVT0 is in EXTINT mode.
+ */
+- if (atomic_read(&kvm->arch.vapics_in_nmi_mode) > 0)
++ if (kvm->arch.vapics_in_nmi_mode > 0)
+ kvm_for_each_vcpu(i, vcpu, kvm)
+ kvm_apic_nmi_wd_deliver(vcpu);
+ }
+diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
+index 67d07e0..4c7deb4 100644
+--- a/arch/x86/kvm/lapic.c
++++ b/arch/x86/kvm/lapic.c
+@@ -1250,10 +1250,10 @@ static void apic_manage_nmi_watchdog(struct kvm_lapic *apic, u32 lvt0_val)
+ if (!nmi_wd_enabled) {
+ apic_debug("Receive NMI setting on APIC_LVT0 "
+ "for cpu %d\n", apic->vcpu->vcpu_id);
+- atomic_inc(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
++ apic->vcpu->kvm->arch.vapics_in_nmi_mode++;
+ }
+ } else if (nmi_wd_enabled)
+- atomic_dec(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
++ apic->vcpu->kvm->arch.vapics_in_nmi_mode--;
+ }
+
+ static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
+@@ -1808,7 +1808,6 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
+ apic_update_ppr(apic);
+ hrtimer_cancel(&apic->lapic_timer.timer);
+ apic_update_lvtt(apic);
+- apic_manage_nmi_watchdog(apic, kvm_apic_get_reg(apic, APIC_LVT0));
+ update_divide_count(apic);
+ start_apic_timer(apic);
+ apic->irr_pending = true;
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 4911bf1..9afa233 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -511,10 +511,8 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
+ {
+ struct vcpu_svm *svm = to_svm(vcpu);
+
+- if (svm->vmcb->control.next_rip != 0) {
+- WARN_ON(!static_cpu_has(X86_FEATURE_NRIPS));
++ if (svm->vmcb->control.next_rip != 0)
+ svm->next_rip = svm->vmcb->control.next_rip;
+- }
+
+ if (!svm->next_rip) {
+ if (emulate_instruction(vcpu, EMULTYPE_SKIP) !=
+@@ -4319,9 +4317,7 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu,
+ break;
+ }
+
+- /* TODO: Advertise NRIPS to guest hypervisor unconditionally */
+- if (static_cpu_has(X86_FEATURE_NRIPS))
+- vmcb->control.next_rip = info->next_rip;
++ vmcb->control.next_rip = info->next_rip;
+ vmcb->control.exit_code = icpt_info.exit_code;
+ vmexit = nested_svm_exit_handled(svm);
+
+diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
+index ff99117..14a63ed 100644
+--- a/arch/x86/pci/acpi.c
++++ b/arch/x86/pci/acpi.c
+@@ -81,17 +81,6 @@ static const struct dmi_system_id pci_crs_quirks[] __initconst = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
+ },
+ },
+- /* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/931368 */
+- /* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1033299 */
+- {
+- .callback = set_use_crs,
+- .ident = "Foxconn K8M890-8237A",
+- .matches = {
+- DMI_MATCH(DMI_BOARD_VENDOR, "Foxconn"),
+- DMI_MATCH(DMI_BOARD_NAME, "K8M890-8237A"),
+- DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
+- },
+- },
+
+ /* Now for the blacklist.. */
+
+@@ -132,10 +121,8 @@ void __init pci_acpi_crs_quirks(void)
+ {
+ int year;
+
+- if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008) {
+- if (iomem_resource.end <= 0xffffffff)
+- pci_use_crs = false;
+- }
++ if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
++ pci_use_crs = false;
+
+ dmi_check_system(pci_crs_quirks);
+
+diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
+index e527a3e..8c81af6 100644
+--- a/drivers/bluetooth/ath3k.c
++++ b/drivers/bluetooth/ath3k.c
+@@ -80,7 +80,6 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x0489, 0xe057) },
+ { USB_DEVICE(0x0489, 0xe056) },
+ { USB_DEVICE(0x0489, 0xe05f) },
+- { USB_DEVICE(0x0489, 0xe076) },
+ { USB_DEVICE(0x0489, 0xe078) },
+ { USB_DEVICE(0x04c5, 0x1330) },
+ { USB_DEVICE(0x04CA, 0x3004) },
+@@ -89,7 +88,6 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x04CA, 0x3007) },
+ { USB_DEVICE(0x04CA, 0x3008) },
+ { USB_DEVICE(0x04CA, 0x300b) },
+- { USB_DEVICE(0x04CA, 0x300d) },
+ { USB_DEVICE(0x04CA, 0x300f) },
+ { USB_DEVICE(0x04CA, 0x3010) },
+ { USB_DEVICE(0x0930, 0x0219) },
+@@ -115,7 +113,6 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x13d3, 0x3408) },
+ { USB_DEVICE(0x13d3, 0x3423) },
+ { USB_DEVICE(0x13d3, 0x3432) },
+- { USB_DEVICE(0x13d3, 0x3474) },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE02C) },
+@@ -140,7 +137,6 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
+- { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+@@ -149,7 +145,6 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
+- { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+@@ -175,7 +170,6 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
+- { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU22 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index 420cc9f..3c10d4d 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -178,7 +178,6 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
+- { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+@@ -187,7 +186,6 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
+- { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+@@ -213,7 +211,6 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
+- { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
+diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
+index c45d274..6414661 100644
+--- a/drivers/cpufreq/intel_pstate.c
++++ b/drivers/cpufreq/intel_pstate.c
+@@ -535,7 +535,7 @@ static void byt_set_pstate(struct cpudata *cpudata, int pstate)
+
+ val |= vid;
+
+- wrmsrl_on_cpu(cpudata->cpu, MSR_IA32_PERF_CTL, val);
++ wrmsrl(MSR_IA32_PERF_CTL, val);
+ }
+
+ #define BYT_BCLK_FREQS 5
+diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
+index 3442764..5937207 100644
+--- a/drivers/cpuidle/cpuidle-powernv.c
++++ b/drivers/cpuidle/cpuidle-powernv.c
+@@ -60,8 +60,6 @@ static int nap_loop(struct cpuidle_device *dev,
+ return index;
+ }
+
+-/* Register for fastsleep only in oneshot mode of broadcast */
+-#ifdef CONFIG_TICK_ONESHOT
+ static int fastsleep_loop(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
+ int index)
+@@ -85,7 +83,7 @@ static int fastsleep_loop(struct cpuidle_device *dev,
+
+ return index;
+ }
+-#endif
++
+ /*
+ * States for dedicated partition case.
+ */
+@@ -211,14 +209,7 @@ static int powernv_add_idle_states(void)
+ powernv_states[nr_idle_states].flags = 0;
+ powernv_states[nr_idle_states].target_residency = 100;
+ powernv_states[nr_idle_states].enter = &nap_loop;
+- }
+-
+- /*
+- * All cpuidle states with CPUIDLE_FLAG_TIMER_STOP set must come
+- * within this config dependency check.
+- */
+-#ifdef CONFIG_TICK_ONESHOT
+- if (flags[i] & OPAL_PM_SLEEP_ENABLED ||
++ } else if (flags[i] & OPAL_PM_SLEEP_ENABLED ||
+ flags[i] & OPAL_PM_SLEEP_ENABLED_ER1) {
+ /* Add FASTSLEEP state */
+ strcpy(powernv_states[nr_idle_states].name, "FastSleep");
+@@ -227,7 +218,7 @@ static int powernv_add_idle_states(void)
+ powernv_states[nr_idle_states].target_residency = 300000;
+ powernv_states[nr_idle_states].enter = &fastsleep_loop;
+ }
+-#endif
++
+ powernv_states[nr_idle_states].exit_latency =
+ ((unsigned int)latency_ns[i]) / 1000;
+
+diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
+index f062158..857414a 100644
+--- a/drivers/crypto/talitos.c
++++ b/drivers/crypto/talitos.c
+@@ -925,8 +925,7 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
+ sg_count--;
+ link_tbl_ptr--;
+ }
+- link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len)
+- + cryptlen);
++ be16_add_cpu(&link_tbl_ptr->len, cryptlen);
+
+ /* tag end of link table */
+ link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
+@@ -2562,7 +2561,6 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
+ break;
+ default:
+ dev_err(dev, "unknown algorithm type %d\n", t_alg->algt.type);
+- kfree(t_alg);
+ return ERR_PTR(-EINVAL);
+ }
+
+diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
+index ca9f4ed..e1c7e9e 100644
+--- a/drivers/iommu/amd_iommu.c
++++ b/drivers/iommu/amd_iommu.c
+@@ -1869,15 +1869,9 @@ static void free_pt_##LVL (unsigned long __pt) \
+ pt = (u64 *)__pt; \
+ \
+ for (i = 0; i < 512; ++i) { \
+- /* PTE present? */ \
+ if (!IOMMU_PTE_PRESENT(pt[i])) \
+ continue; \
+ \
+- /* Large PTE? */ \
+- if (PM_PTE_LEVEL(pt[i]) == 0 || \
+- PM_PTE_LEVEL(pt[i]) == 7) \
+- continue; \
+- \
+ p = (unsigned long)IOMMU_PTE_PAGE(pt[i]); \
+ FN(p); \
+ } \
+diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
+index 65075ef..66a803b 100644
+--- a/drivers/iommu/arm-smmu.c
++++ b/drivers/iommu/arm-smmu.c
+@@ -1567,7 +1567,7 @@ static int arm_smmu_device_cfg_probe(struct arm_smmu_device *smmu)
+ return -ENODEV;
+ }
+
+- if ((id & ID0_S1TS) && ((smmu->version == 1) || !(id & ID0_ATOSNS))) {
++ if ((id & ID0_S1TS) && ((smmu->version == 1) || (id & ID0_ATOSNS))) {
+ smmu->features |= ARM_SMMU_FEAT_TRANS_OPS;
+ dev_notice(smmu->dev, "\taddress translation ops\n");
+ }
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index 9231cdf..c80287a 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -848,7 +848,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
+ int sg_cnt;
+
+ sg_cnt = sdhci_pre_dma_transfer(host, data, NULL);
+- if (sg_cnt <= 0) {
++ if (sg_cnt == 0) {
+ /*
+ * This only happens when someone fed
+ * us an invalid request.
+diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
+index e9b1810..b0f6924 100644
+--- a/drivers/net/can/dev.c
++++ b/drivers/net/can/dev.c
+@@ -440,9 +440,6 @@ unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx)
+ struct can_frame *cf = (struct can_frame *)skb->data;
+ u8 dlc = cf->can_dlc;
+
+- if (!(skb->tstamp.tv64))
+- __net_timestamp(skb);
+-
+ netif_rx(priv->echo_skb[idx]);
+ priv->echo_skb[idx] = NULL;
+
+@@ -578,7 +575,6 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
+ if (unlikely(!skb))
+ return NULL;
+
+- __net_timestamp(skb);
+ skb->protocol = htons(ETH_P_CAN);
+ skb->pkt_type = PACKET_BROADCAST;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+@@ -607,7 +603,6 @@ struct sk_buff *alloc_canfd_skb(struct net_device *dev,
+ if (unlikely(!skb))
+ return NULL;
+
+- __net_timestamp(skb);
+ skb->protocol = htons(ETH_P_CANFD);
+ skb->pkt_type = PACKET_BROADCAST;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
+index f64f529..c837eb9 100644
+--- a/drivers/net/can/slcan.c
++++ b/drivers/net/can/slcan.c
+@@ -207,7 +207,6 @@ static void slc_bump(struct slcan *sl)
+ if (!skb)
+ return;
+
+- __net_timestamp(skb);
+ skb->dev = sl->dev;
+ skb->protocol = htons(ETH_P_CAN);
+ skb->pkt_type = PACKET_BROADCAST;
+diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c
+index 0ce868d..674f367 100644
+--- a/drivers/net/can/vcan.c
++++ b/drivers/net/can/vcan.c
+@@ -78,9 +78,6 @@ static void vcan_rx(struct sk_buff *skb, struct net_device *dev)
+ skb->dev = dev;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+- if (!(skb->tstamp.tv64))
+- __net_timestamp(skb);
+-
+ netif_rx_ni(skb);
+ }
+
+diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
+index 5c92fb7..d81fc6b 100644
+--- a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
++++ b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
+@@ -263,7 +263,7 @@ static int xgbe_alloc_pages(struct xgbe_prv_data *pdata,
+ int ret;
+
+ /* Try to obtain pages, decreasing order if necessary */
+- gfp |= __GFP_COLD | __GFP_COMP | __GFP_NOWARN;
++ gfp |= __GFP_COLD | __GFP_COMP;
+ while (order >= 0) {
+ pages = alloc_pages(gfp, order);
+ if (pages)
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+index 8a97d28..33501bc 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+@@ -9323,8 +9323,7 @@ unload_error:
+ * function stop ramrod is sent, since as part of this ramrod FW access
+ * PTP registers.
+ */
+- if (bp->flags & PTP_SUPPORTED)
+- bnx2x_stop_ptp(bp);
++ bnx2x_stop_ptp(bp);
+
+ /* Disable HW interrupts, NAPI */
+ bnx2x_netif_stop(bp, 1);
+diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
+index 74d0389..ce5f7f9 100644
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -310,7 +310,6 @@ struct mvneta_port {
+ unsigned int link;
+ unsigned int duplex;
+ unsigned int speed;
+- unsigned int tx_csum_limit;
+ int use_inband_status:1;
+ };
+
+@@ -1014,12 +1013,6 @@ static void mvneta_defaults_set(struct mvneta_port *pp)
+ val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER);
+ val |= MVNETA_GMAC_1MS_CLOCK_ENABLE;
+ mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val);
+- } else {
+- val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
+- val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE |
+- MVNETA_GMAC_AN_SPEED_EN |
+- MVNETA_GMAC_AN_DUPLEX_EN);
+- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
+ }
+
+ mvneta_set_ucast_table(pp, -1);
+@@ -2509,10 +2502,8 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
+
+ dev->mtu = mtu;
+
+- if (!netif_running(dev)) {
+- netdev_update_features(dev);
++ if (!netif_running(dev))
+ return 0;
+- }
+
+ /* The interface is running, so we have to force a
+ * reallocation of the queues
+@@ -2541,26 +2532,9 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
+ mvneta_start_dev(pp);
+ mvneta_port_up(pp);
+
+- netdev_update_features(dev);
+-
+ return 0;
+ }
+
+-static netdev_features_t mvneta_fix_features(struct net_device *dev,
+- netdev_features_t features)
+-{
+- struct mvneta_port *pp = netdev_priv(dev);
+-
+- if (pp->tx_csum_limit && dev->mtu > pp->tx_csum_limit) {
+- features &= ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
+- netdev_info(dev,
+- "Disable IP checksum for MTU greater than %dB\n",
+- pp->tx_csum_limit);
+- }
+-
+- return features;
+-}
+-
+ /* Get mac address */
+ static void mvneta_get_mac_addr(struct mvneta_port *pp, unsigned char *addr)
+ {
+@@ -2882,7 +2856,6 @@ static const struct net_device_ops mvneta_netdev_ops = {
+ .ndo_set_rx_mode = mvneta_set_rx_mode,
+ .ndo_set_mac_address = mvneta_set_mac_addr,
+ .ndo_change_mtu = mvneta_change_mtu,
+- .ndo_fix_features = mvneta_fix_features,
+ .ndo_get_stats64 = mvneta_get_stats64,
+ .ndo_do_ioctl = mvneta_ioctl,
+ };
+@@ -3128,9 +3101,6 @@ static int mvneta_probe(struct platform_device *pdev)
+ }
+ }
+
+- if (of_device_is_compatible(dn, "marvell,armada-370-neta"))
+- pp->tx_csum_limit = 1600;
+-
+ pp->tx_ring_size = MVNETA_MAX_TXD;
+ pp->rx_ring_size = MVNETA_MAX_RXD;
+
+@@ -3209,7 +3179,6 @@ static int mvneta_remove(struct platform_device *pdev)
+
+ static const struct of_device_id mvneta_match[] = {
+ { .compatible = "marvell,armada-370-neta" },
+- { .compatible = "marvell,armada-xp-neta" },
+ { }
+ };
+ MODULE_DEVICE_TABLE(of, mvneta_match);
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+index a5a0b84..cf467a9 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+@@ -1973,6 +1973,10 @@ void mlx4_en_free_resources(struct mlx4_en_priv *priv)
+ mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
+ }
+
++ if (priv->base_tx_qpn) {
++ mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
++ priv->base_tx_qpn = 0;
++ }
+ }
+
+ int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+index eab4e08..2a77a6b 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+@@ -723,7 +723,7 @@ static int get_fixed_ipv6_csum(__wsum hw_checksum, struct sk_buff *skb,
+ }
+ #endif
+ static int check_csum(struct mlx4_cqe *cqe, struct sk_buff *skb, void *va,
+- netdev_features_t dev_features)
++ int hwtstamp_rx_filter)
+ {
+ __wsum hw_checksum = 0;
+
+@@ -731,8 +731,14 @@ static int check_csum(struct mlx4_cqe *cqe, struct sk_buff *skb, void *va,
+
+ hw_checksum = csum_unfold((__force __sum16)cqe->checksum);
+
+- if (cqe->vlan_my_qpn & cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK) &&
+- !(dev_features & NETIF_F_HW_VLAN_CTAG_RX)) {
++ if (((struct ethhdr *)va)->h_proto == htons(ETH_P_8021Q) &&
++ hwtstamp_rx_filter != HWTSTAMP_FILTER_NONE) {
++ /* next protocol non IPv4 or IPv6 */
++ if (((struct vlan_hdr *)hdr)->h_vlan_encapsulated_proto
++ != htons(ETH_P_IP) &&
++ ((struct vlan_hdr *)hdr)->h_vlan_encapsulated_proto
++ != htons(ETH_P_IPV6))
++ return -1;
+ hw_checksum = get_fixed_vlan_csum(hw_checksum, hdr);
+ hdr += sizeof(struct vlan_hdr);
+ }
+@@ -895,8 +901,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
+
+ if (ip_summed == CHECKSUM_COMPLETE) {
+ void *va = skb_frag_address(skb_shinfo(gro_skb)->frags);
+- if (check_csum(cqe, gro_skb, va,
+- dev->features)) {
++ if (check_csum(cqe, gro_skb, va, ring->hwtstamp_rx_filter)) {
+ ip_summed = CHECKSUM_NONE;
+ ring->csum_none++;
+ ring->csum_complete--;
+@@ -951,7 +956,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
+ }
+
+ if (ip_summed == CHECKSUM_COMPLETE) {
+- if (check_csum(cqe, skb, skb->data, dev->features)) {
++ if (check_csum(cqe, skb, skb->data, ring->hwtstamp_rx_filter)) {
+ ip_summed = CHECKSUM_NONE;
+ ring->csum_complete--;
+ ring->csum_none++;
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+index c10d98f..7bed3a8 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+@@ -66,7 +66,6 @@ int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
+ ring->size = size;
+ ring->size_mask = size - 1;
+ ring->stride = stride;
+- ring->full_size = ring->size - HEADROOM - MAX_DESC_TXBBS;
+
+ tmp = size * sizeof(struct mlx4_en_tx_info);
+ ring->tx_info = kmalloc_node(tmp, GFP_KERNEL | __GFP_NOWARN, node);
+@@ -181,7 +180,6 @@ void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
+ mlx4_bf_free(mdev->dev, &ring->bf);
+ mlx4_qp_remove(mdev->dev, &ring->qp);
+ mlx4_qp_free(mdev->dev, &ring->qp);
+- mlx4_qp_release_range(priv->mdev->dev, ring->qpn, 1);
+ mlx4_en_unmap_buffer(&ring->wqres.buf);
+ mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+ kfree(ring->bounce_buf);
+@@ -233,11 +231,6 @@ void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
+ MLX4_QP_STATE_RST, NULL, 0, 0, &ring->qp);
+ }
+
+-static inline bool mlx4_en_is_tx_ring_full(struct mlx4_en_tx_ring *ring)
+-{
+- return ring->prod - ring->cons > ring->full_size;
+-}
+-
+ static void mlx4_en_stamp_wqe(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring, int index,
+ u8 owner)
+@@ -480,10 +473,11 @@ static bool mlx4_en_process_tx_cq(struct net_device *dev,
+
+ netdev_tx_completed_queue(ring->tx_queue, packets, bytes);
+
+- /* Wakeup Tx queue if this stopped, and ring is not full.
++ /*
++ * Wakeup Tx queue if this stopped, and at least 1 packet
++ * was completed
+ */
+- if (netif_tx_queue_stopped(ring->tx_queue) &&
+- !mlx4_en_is_tx_ring_full(ring)) {
++ if (netif_tx_queue_stopped(ring->tx_queue) && txbbs_skipped > 0) {
+ netif_tx_wake_queue(ring->tx_queue);
+ ring->wake_queue++;
+ }
+@@ -927,7 +921,8 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
+ skb_tx_timestamp(skb);
+
+ /* Check available TXBBs And 2K spare for prefetch */
+- stop_queue = mlx4_en_is_tx_ring_full(ring);
++ stop_queue = (int)(ring->prod - ring_cons) >
++ ring->size - HEADROOM - MAX_DESC_TXBBS;
+ if (unlikely(stop_queue)) {
+ netif_tx_stop_queue(ring->tx_queue);
+ ring->queue_stopped++;
+@@ -996,7 +991,8 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
+ smp_rmb();
+
+ ring_cons = ACCESS_ONCE(ring->cons);
+- if (unlikely(!mlx4_en_is_tx_ring_full(ring))) {
++ if (unlikely(((int)(ring->prod - ring_cons)) <=
++ ring->size - HEADROOM - MAX_DESC_TXBBS)) {
+ netif_tx_wake_queue(ring->tx_queue);
+ ring->wake_queue++;
+ }
+diff --git a/drivers/net/ethernet/mellanox/mlx4/intf.c b/drivers/net/ethernet/mellanox/mlx4/intf.c
+index 0d80aed..6fce587 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/intf.c
++++ b/drivers/net/ethernet/mellanox/mlx4/intf.c
+@@ -93,14 +93,8 @@ int mlx4_register_interface(struct mlx4_interface *intf)
+ mutex_lock(&intf_mutex);
+
+ list_add_tail(&intf->list, &intf_list);
+- list_for_each_entry(priv, &dev_list, dev_list) {
+- if (mlx4_is_mfunc(&priv->dev) && (intf->flags & MLX4_INTFF_BONDING)) {
+- mlx4_dbg(&priv->dev,
+- "SRIOV, disabling HA mode for intf proto %d\n", intf->protocol);
+- intf->flags &= ~MLX4_INTFF_BONDING;
+- }
++ list_for_each_entry(priv, &dev_list, dev_list)
+ mlx4_add_device(intf, priv);
+- }
+
+ mutex_unlock(&intf_mutex);
+
+diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+index 909fcf8..d021f07 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
++++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+@@ -279,7 +279,6 @@ struct mlx4_en_tx_ring {
+ u32 size; /* number of TXBBs */
+ u32 size_mask;
+ u16 stride;
+- u32 full_size;
+ u16 cqn; /* index of port CQ associated with this ring */
+ u32 buf_size;
+ __be32 doorbell_qpn;
+@@ -580,6 +579,7 @@ struct mlx4_en_priv {
+ int vids[128];
+ bool wol;
+ struct device *ddev;
++ int base_tx_qpn;
+ struct hlist_head mac_hash[MLX4_EN_MAC_HASH_SIZE];
+ struct hwtstamp_config hwtstamp_config;
+
+diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
+index d551df6..bdfe51f 100644
+--- a/drivers/net/phy/phy_device.c
++++ b/drivers/net/phy/phy_device.c
+@@ -796,11 +796,10 @@ static int genphy_config_advert(struct phy_device *phydev)
+ if (phydev->supported & (SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full)) {
+ adv |= ethtool_adv_to_mii_ctrl1000_t(advertise);
++ if (adv != oldadv)
++ changed = 1;
+ }
+
+- if (adv != oldadv)
+- changed = 1;
+-
+ err = phy_write(phydev, MII_CTRL1000, adv);
+ if (err < 0)
+ return err;
+diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
+index 4cdac78..b2f9521 100644
+--- a/drivers/net/wireless/b43/main.c
++++ b/drivers/net/wireless/b43/main.c
+@@ -5365,10 +5365,6 @@ static void b43_supported_bands(struct b43_wldev *dev, bool *have_2ghz_phy,
+ *have_5ghz_phy = true;
+ return;
+ case 0x4321: /* BCM4306 */
+- /* There are 14e4:4321 PCI devs with 2.4 GHz BCM4321 (N-PHY) */
+- if (dev->phy.type != B43_PHYTYPE_G)
+- break;
+- /* fall through */
+ case 0x4313: /* BCM4311 */
+ case 0x431a: /* BCM4318 */
+ case 0x432a: /* BCM4321 */
+diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
+index ec383b0..968787a 100644
+--- a/drivers/net/xen-netback/xenbus.c
++++ b/drivers/net/xen-netback/xenbus.c
+@@ -681,9 +681,6 @@ static int xen_register_watchers(struct xenbus_device *dev, struct xenvif *vif)
+ char *node;
+ unsigned maxlen = strlen(dev->nodename) + sizeof("/rate");
+
+- if (vif->credit_watch.node)
+- return -EADDRINUSE;
+-
+ node = kmalloc(maxlen, GFP_KERNEL);
+ if (!node)
+ return -ENOMEM;
+@@ -773,7 +770,6 @@ static void connect(struct backend_info *be)
+ }
+
+ xen_net_read_rate(dev, &credit_bytes, &credit_usec);
+- xen_unregister_watchers(be->vif);
+ xen_register_watchers(dev, be->vif);
+ read_xenbus_vif_flags(be);
+
+diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c
+index f8d8fdb..6f1fa17 100644
+--- a/drivers/s390/kvm/virtio_ccw.c
++++ b/drivers/s390/kvm/virtio_ccw.c
+@@ -65,7 +65,6 @@ struct virtio_ccw_device {
+ bool is_thinint;
+ bool going_away;
+ bool device_lost;
+- unsigned int config_ready;
+ void *airq_info;
+ };
+
+@@ -834,11 +833,8 @@ static void virtio_ccw_get_config(struct virtio_device *vdev,
+ if (ret)
+ goto out_free;
+
+- memcpy(vcdev->config, config_area, offset + len);
+- if (buf)
+- memcpy(buf, &vcdev->config[offset], len);
+- if (vcdev->config_ready < offset + len)
+- vcdev->config_ready = offset + len;
++ memcpy(vcdev->config, config_area, sizeof(vcdev->config));
++ memcpy(buf, &vcdev->config[offset], len);
+
+ out_free:
+ kfree(config_area);
+@@ -861,9 +857,6 @@ static void virtio_ccw_set_config(struct virtio_device *vdev,
+ if (!config_area)
+ goto out_free;
+
+- /* Make sure we don't overwrite fields. */
+- if (vcdev->config_ready < offset)
+- virtio_ccw_get_config(vdev, 0, NULL, offset);
+ memcpy(&vcdev->config[offset], buf, len);
+ /* Write the config area to the host. */
+ memcpy(config_area, vcdev->config, sizeof(vcdev->config));
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index a086e1d..5c8f581 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1477,11 +1477,6 @@ skip_countries:
+ goto alloc_fail8;
+ }
+
+- if (quirks & CLEAR_HALT_CONDITIONS) {
+- usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress));
+- usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress));
+- }
+-
+ return 0;
+ alloc_fail8:
+ if (acm->country_codes) {
+@@ -1761,10 +1756,6 @@ static const struct usb_device_id acm_ids[] = {
+ .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
+ },
+
+- { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
+- .driver_info = CLEAR_HALT_CONDITIONS,
+- },
+-
+ /* Nokia S60 phones expose two ACM channels. The first is
+ * a modem and is picked up by the standard AT-command
+ * information below. The second is 'vendor-specific' but
+diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
+index b3b6c9d..ffeb3c8 100644
+--- a/drivers/usb/class/cdc-acm.h
++++ b/drivers/usb/class/cdc-acm.h
+@@ -133,4 +133,3 @@ struct acm {
+ #define NO_DATA_INTERFACE BIT(4)
+ #define IGNORE_DEVICE BIT(5)
+ #define QUIRK_CONTROL_LINE_STATE BIT(6)
+-#define CLEAR_HALT_CONDITIONS BIT(7)
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 45b8c8b..3507f88 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -3435,7 +3435,6 @@ done:
+ static void ffs_closed(struct ffs_data *ffs)
+ {
+ struct ffs_dev *ffs_obj;
+- struct f_fs_opts *opts;
+
+ ENTER();
+ ffs_dev_lock();
+@@ -3450,13 +3449,8 @@ static void ffs_closed(struct ffs_data *ffs)
+ ffs_obj->ffs_closed_callback)
+ ffs_obj->ffs_closed_callback(ffs);
+
+- if (ffs_obj->opts)
+- opts = ffs_obj->opts;
+- else
+- goto done;
+-
+- if (opts->no_configfs || !opts->func_inst.group.cg_item.ci_parent
+- || !atomic_read(&opts->func_inst.group.cg_item.ci_kref.refcount))
++ if (!ffs_obj->opts || ffs_obj->opts->no_configfs
++ || !ffs_obj->opts->func_inst.group.cg_item.ci_parent)
+ goto done;
+
+ unregister_gadget_item(ffs_obj->opts->
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 50bb3c2..37b5afd 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -2927,6 +2927,17 @@ restart:
+ vfsmnt = &mnt->mnt;
+ continue;
+ }
++ /*
++ * Filesystems needing to implement special "root names"
++ * should do so with ->d_dname()
++ */
++ if (IS_ROOT(dentry) &&
++ (dentry->d_name.len != 1 ||
++ dentry->d_name.name[0] != '/')) {
++ WARN(1, "Root dentry has weird name <%.*s>\n",
++ (int) dentry->d_name.len,
++ dentry->d_name.name);
++ }
+ if (!error)
+ error = is_mounted(vfsmnt) ? 1 : 2;
+ break;
+diff --git a/fs/inode.c b/fs/inode.c
+index 6e342ca..ea37cd1 100644
+--- a/fs/inode.c
++++ b/fs/inode.c
+@@ -1693,8 +1693,8 @@ int file_remove_suid(struct file *file)
+ error = security_inode_killpriv(dentry);
+ if (!error && killsuid)
+ error = __remove_suid(dentry, killsuid);
+- if (!error)
+- inode_has_no_xattr(inode);
++ if (!error && (inode->i_sb->s_flags & MS_NOSEC))
++ inode->i_flags |= S_NOSEC;
+
+ return error;
+ }
+diff --git a/fs/namespace.c b/fs/namespace.c
+index 1d4a97c..1b9e111 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -3185,15 +3185,11 @@ bool fs_fully_visible(struct file_system_type *type)
+ if (mnt->mnt.mnt_root != mnt->mnt.mnt_sb->s_root)
+ continue;
+
+- /* This mount is not fully visible if there are any
+- * locked child mounts that cover anything except for
+- * empty directories.
++ /* This mount is not fully visible if there are any child mounts
++ * that cover anything except for empty directories.
+ */
+ list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
+ struct inode *inode = child->mnt_mountpoint->d_inode;
+- /* Only worry about locked mounts */
+- if (!(mnt->mnt.mnt_flags & MNT_LOCKED))
+- continue;
+ if (!S_ISDIR(inode->i_mode))
+ goto next;
+ if (inode->i_nlink > 2)
+diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
+index a7106ed..2c10360 100644
+--- a/fs/ufs/balloc.c
++++ b/fs/ufs/balloc.c
+@@ -51,8 +51,8 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
+
+ if (ufs_fragnum(fragment) + count > uspi->s_fpg)
+ ufs_error (sb, "ufs_free_fragments", "internal error");
+-
+- mutex_lock(&UFS_SB(sb)->s_lock);
++
++ lock_ufs(sb);
+
+ cgno = ufs_dtog(uspi, fragment);
+ bit = ufs_dtogd(uspi, fragment);
+@@ -115,13 +115,13 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
+ if (sb->s_flags & MS_SYNCHRONOUS)
+ ubh_sync_block(UCPI_UBH(ucpi));
+ ufs_mark_sb_dirty(sb);
+-
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++
++ unlock_ufs(sb);
+ UFSD("EXIT\n");
+ return;
+
+ failed:
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ UFSD("EXIT (FAILED)\n");
+ return;
+ }
+@@ -151,7 +151,7 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count)
+ goto failed;
+ }
+
+- mutex_lock(&UFS_SB(sb)->s_lock);
++ lock_ufs(sb);
+
+ do_more:
+ overflow = 0;
+@@ -211,12 +211,12 @@ do_more:
+ }
+
+ ufs_mark_sb_dirty(sb);
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ UFSD("EXIT\n");
+ return;
+
+ failed_unlock:
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ failed:
+ UFSD("EXIT (FAILED)\n");
+ return;
+@@ -357,7 +357,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ usb1 = ubh_get_usb_first(uspi);
+ *err = -ENOSPC;
+
+- mutex_lock(&UFS_SB(sb)->s_lock);
++ lock_ufs(sb);
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+
+ if (count + ufs_fragnum(fragment) > uspi->s_fpb) {
+@@ -378,19 +378,19 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ "fragment %llu, tmp %llu\n",
+ (unsigned long long)fragment,
+ (unsigned long long)tmp);
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ return INVBLOCK;
+ }
+ if (fragment < UFS_I(inode)->i_lastfrag) {
+ UFSD("EXIT (ALREADY ALLOCATED)\n");
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ return 0;
+ }
+ }
+ else {
+ if (tmp) {
+ UFSD("EXIT (ALREADY ALLOCATED)\n");
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ return 0;
+ }
+ }
+@@ -399,7 +399,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ * There is not enough space for user on the device
+ */
+ if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) {
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ UFSD("EXIT (FAILED)\n");
+ return 0;
+ }
+@@ -424,7 +424,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ ufs_clear_frags(inode, result + oldcount,
+ newcount - oldcount, locked_page != NULL);
+ }
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ UFSD("EXIT, result %llu\n", (unsigned long long)result);
+ return result;
+ }
+@@ -439,7 +439,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ fragment + count);
+ ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
+ locked_page != NULL);
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ UFSD("EXIT, result %llu\n", (unsigned long long)result);
+ return result;
+ }
+@@ -477,7 +477,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ *err = 0;
+ UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag,
+ fragment + count);
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ if (newcount < request)
+ ufs_free_fragments (inode, result + newcount, request - newcount);
+ ufs_free_fragments (inode, tmp, oldcount);
+@@ -485,7 +485,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ return result;
+ }
+
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ UFSD("EXIT (FAILED)\n");
+ return 0;
+ }
+diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c
+index fd0203c..7caa016 100644
+--- a/fs/ufs/ialloc.c
++++ b/fs/ufs/ialloc.c
+@@ -69,11 +69,11 @@ void ufs_free_inode (struct inode * inode)
+
+ ino = inode->i_ino;
+
+- mutex_lock(&UFS_SB(sb)->s_lock);
++ lock_ufs(sb);
+
+ if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) {
+ ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino);
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ return;
+ }
+
+@@ -81,7 +81,7 @@ void ufs_free_inode (struct inode * inode)
+ bit = ufs_inotocgoff (ino);
+ ucpi = ufs_load_cylinder (sb, cg);
+ if (!ucpi) {
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ return;
+ }
+ ucg = ubh_get_ucg(UCPI_UBH(ucpi));
+@@ -115,7 +115,7 @@ void ufs_free_inode (struct inode * inode)
+ ubh_sync_block(UCPI_UBH(ucpi));
+
+ ufs_mark_sb_dirty(sb);
+- mutex_unlock(&UFS_SB(sb)->s_lock);
++ unlock_ufs(sb);
+ UFSD("EXIT\n");
+ }
+
+@@ -193,7 +193,7 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode)
+ sbi = UFS_SB(sb);
+ uspi = sbi->s_uspi;
+
+- mutex_lock(&sbi->s_lock);
++ lock_ufs(sb);
+
+ /*
+ * Try to place the inode in its parent directory
+@@ -331,21 +331,21 @@ cg_found:
+ sync_dirty_buffer(bh);
+ brelse(bh);
+ }
+- mutex_unlock(&sbi->s_lock);
++ unlock_ufs(sb);
+
+ UFSD("allocating inode %lu\n", inode->i_ino);
+ UFSD("EXIT\n");
+ return inode;
+
+ fail_remove_inode:
+- mutex_unlock(&sbi->s_lock);
++ unlock_ufs(sb);
+ clear_nlink(inode);
+ unlock_new_inode(inode);
+ iput(inode);
+ UFSD("EXIT (FAILED): err %d\n", err);
+ return ERR_PTR(err);
+ failed:
+- mutex_unlock(&sbi->s_lock);
++ unlock_ufs(sb);
+ make_bad_inode(inode);
+ iput (inode);
+ UFSD("EXIT (FAILED): err %d\n", err);
+diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
+index 2d93ab0..be7d42c 100644
+--- a/fs/ufs/inode.c
++++ b/fs/ufs/inode.c
+@@ -902,9 +902,6 @@ void ufs_evict_inode(struct inode * inode)
+ invalidate_inode_buffers(inode);
+ clear_inode(inode);
+
+- if (want_delete) {
+- lock_ufs(inode->i_sb);
++ if (want_delete)
+ ufs_free_inode(inode);
+- unlock_ufs(inode->i_sb);
+- }
+ }
+diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
+index 60ee322..e491a93 100644
+--- a/fs/ufs/namei.c
++++ b/fs/ufs/namei.c
+@@ -128,12 +128,12 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry,
+ if (l > sb->s_blocksize)
+ goto out_notlocked;
+
+- lock_ufs(dir->i_sb);
+ inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
+ err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+- goto out;
++ goto out_notlocked;
+
++ lock_ufs(dir->i_sb);
+ if (l > UFS_SB(sb)->s_uspi->s_maxsymlinklen) {
+ /* slow symlink */
+ inode->i_op = &ufs_symlink_inode_operations;
+@@ -174,12 +174,7 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir,
+ inode_inc_link_count(inode);
+ ihold(inode);
+
+- error = ufs_add_link(dentry, inode);
+- if (error) {
+- inode_dec_link_count(inode);
+- iput(inode);
+- } else
+- d_instantiate(dentry, inode);
++ error = ufs_add_nondir(dentry, inode);
+ unlock_ufs(dir->i_sb);
+ return error;
+ }
+@@ -189,13 +184,9 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
+ struct inode * inode;
+ int err;
+
+- lock_ufs(dir->i_sb);
+- inode_inc_link_count(dir);
+-
+ inode = ufs_new_inode(dir, S_IFDIR|mode);
+- err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+- goto out_dir;
++ return PTR_ERR(inode);
+
+ inode->i_op = &ufs_dir_inode_operations;
+ inode->i_fop = &ufs_dir_operations;
+@@ -203,6 +194,9 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
+
+ inode_inc_link_count(inode);
+
++ lock_ufs(dir->i_sb);
++ inode_inc_link_count(dir);
++
+ err = ufs_make_empty(inode, dir);
+ if (err)
+ goto out_fail;
+@@ -212,7 +206,6 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
+ goto out_fail;
+ unlock_ufs(dir->i_sb);
+
+- unlock_new_inode(inode);
+ d_instantiate(dentry, inode);
+ out:
+ return err;
+@@ -222,7 +215,6 @@ out_fail:
+ inode_dec_link_count(inode);
+ unlock_new_inode(inode);
+ iput (inode);
+-out_dir:
+ inode_dec_link_count(dir);
+ unlock_ufs(dir->i_sb);
+ goto out;
+diff --git a/fs/ufs/super.c b/fs/ufs/super.c
+index dc33f94..b3bc3e7 100644
+--- a/fs/ufs/super.c
++++ b/fs/ufs/super.c
+@@ -694,7 +694,6 @@ static int ufs_sync_fs(struct super_block *sb, int wait)
+ unsigned flags;
+
+ lock_ufs(sb);
+- mutex_lock(&UFS_SB(sb)->s_lock);
+
+ UFSD("ENTER\n");
+
+@@ -712,7 +711,6 @@ static int ufs_sync_fs(struct super_block *sb, int wait)
+ ufs_put_cstotal(sb);
+
+ UFSD("EXIT\n");
+- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+
+ return 0;
+@@ -801,7 +799,6 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
+ UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
+
+ mutex_init(&sbi->mutex);
+- mutex_init(&sbi->s_lock);
+ spin_lock_init(&sbi->work_lock);
+ INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
+ /*
+@@ -1280,7 +1277,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+
+ sync_filesystem(sb);
+ lock_ufs(sb);
+- mutex_lock(&UFS_SB(sb)->s_lock);
+ uspi = UFS_SB(sb)->s_uspi;
+ flags = UFS_SB(sb)->s_flags;
+ usb1 = ubh_get_usb_first(uspi);
+@@ -1294,7 +1290,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ new_mount_opt = 0;
+ ufs_set_opt (new_mount_opt, ONERROR_LOCK);
+ if (!ufs_parse_options (data, &new_mount_opt)) {
+- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ }
+@@ -1302,14 +1297,12 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ new_mount_opt |= ufstype;
+ } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
+ pr_err("ufstype can't be changed during remount\n");
+- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ }
+
+ if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
+ UFS_SB(sb)->s_mount_opt = new_mount_opt;
+- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return 0;
+ }
+@@ -1333,7 +1326,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ */
+ #ifndef CONFIG_UFS_FS_WRITE
+ pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
+- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ #else
+@@ -1343,13 +1335,11 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
+ ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
+ pr_err("this ufstype is read-only supported\n");
+- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ }
+ if (!ufs_read_cylinder_structures(sb)) {
+ pr_err("failed during remounting\n");
+- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EPERM;
+ }
+@@ -1357,7 +1347,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ #endif
+ }
+ UFS_SB(sb)->s_mount_opt = new_mount_opt;
+- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return 0;
+ }
+diff --git a/fs/ufs/ufs.h b/fs/ufs/ufs.h
+index cf6368d..2a07396 100644
+--- a/fs/ufs/ufs.h
++++ b/fs/ufs/ufs.h
+@@ -30,7 +30,6 @@ struct ufs_sb_info {
+ int work_queued; /* non-zero if the delayed work is queued */
+ struct delayed_work sync_work; /* FS sync delayed work */
+ spinlock_t work_lock; /* protects sync_work and work_queued */
+- struct mutex s_lock;
+ };
+
+ struct ufs_inode_info {
+diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h
+index 8ba379f..3573a81 100644
+--- a/include/net/netns/sctp.h
++++ b/include/net/netns/sctp.h
+@@ -31,7 +31,6 @@ struct netns_sctp {
+ struct list_head addr_waitq;
+ struct timer_list addr_wq_timer;
+ struct list_head auto_asconf_splist;
+- /* Lock that protects both addr_waitq and auto_asconf_splist */
+ spinlock_t addr_wq_lock;
+
+ /* Lock that protects the local_addr_list writers */
+diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
+index 495c87e..2bb2fcf 100644
+--- a/include/net/sctp/structs.h
++++ b/include/net/sctp/structs.h
+@@ -223,10 +223,6 @@ struct sctp_sock {
+ atomic_t pd_mode;
+ /* Receive to here while partial delivery is in effect. */
+ struct sk_buff_head pd_lobby;
+-
+- /* These must be the last fields, as they will skipped on copies,
+- * like on accept and peeloff operations
+- */
+ struct list_head auto_asconf_list;
+ int do_auto_asconf;
+ };
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index 1a0006a..4842a98 100644
--- a/include/uapi/linux/Kbuild
@@ -7499,10 +9575,10 @@ index 1a0006a..4842a98 100644
header-y += kernelcapi.h
diff --git a/include/uapi/linux/kdbus.h b/include/uapi/linux/kdbus.h
new file mode 100644
-index 0000000..00a6e14
+index 0000000..ecffc6b
--- /dev/null
+++ b/include/uapi/linux/kdbus.h
-@@ -0,0 +1,979 @@
+@@ -0,0 +1,980 @@
+/*
+ * kdbus is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the
@@ -7879,6 +9955,7 @@ index 0000000..00a6e14
+ KDBUS_ITEM_ATTACH_FLAGS_RECV,
+ KDBUS_ITEM_ID,
+ KDBUS_ITEM_NAME,
++ KDBUS_ITEM_DST_ID,
+
+ /* keep these item types in sync with KDBUS_ATTACH_* flags */
+ _KDBUS_ITEM_ATTACH_BASE = 0x1000,
@@ -8529,11 +10606,22 @@ index 86c7300..68ec416 100644
+obj-$(CONFIG_KDBUS) += kdbus/
diff --git a/ipc/kdbus/Makefile b/ipc/kdbus/Makefile
new file mode 100644
-index 0000000..7ee9271
+index 0000000..66663a1
--- /dev/null
+++ b/ipc/kdbus/Makefile
-@@ -0,0 +1,22 @@
-+kdbus-y := \
+@@ -0,0 +1,33 @@
++#
++# By setting KDBUS_EXT=2, the kdbus module will be built as kdbus2.ko, and
++# KBUILD_MODNAME=kdbus2. This has the effect that all exported objects have
++# different names than usually (kdbus2fs, /sys/fs/kdbus2/) and you can run
++# your test-infrastructure against the kdbus2.ko, while running your system
++# on kdbus.ko.
++#
++# To just build the module, use:
++# make KDBUS_EXT=2 M=ipc/kdbus
++#
++
++kdbus$(KDBUS_EXT)-y := \
+ bus.o \
+ connection.o \
+ endpoint.o \
@@ -8554,13 +10642,13 @@ index 0000000..7ee9271
+ queue.o \
+ util.o
+
-+obj-$(CONFIG_KDBUS) += kdbus.o
++obj-$(CONFIG_KDBUS) += kdbus$(KDBUS_EXT).o
diff --git a/ipc/kdbus/bus.c b/ipc/kdbus/bus.c
new file mode 100644
-index 0000000..bbdf0f2
+index 0000000..a67f825
--- /dev/null
+++ b/ipc/kdbus/bus.c
-@@ -0,0 +1,542 @@
+@@ -0,0 +1,514 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -8629,23 +10717,16 @@ index 0000000..bbdf0f2
+ const char *name,
+ struct kdbus_bloom_parameter *bloom,
+ const u64 *pattach_owner,
-+ const u64 *pattach_recv,
+ u64 flags, kuid_t uid, kgid_t gid)
+{
+ struct kdbus_bus *b;
+ u64 attach_owner;
-+ u64 attach_recv;
+ int ret;
+
+ if (bloom->size < 8 || bloom->size > KDBUS_BUS_BLOOM_MAX_SIZE ||
+ !KDBUS_IS_ALIGNED8(bloom->size) || bloom->n_hash < 1)
+ return ERR_PTR(-EINVAL);
+
-+ ret = kdbus_sanitize_attach_flags(pattach_recv ? *pattach_recv : 0,
-+ &attach_recv);
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+
+ ret = kdbus_sanitize_attach_flags(pattach_owner ? *pattach_owner : 0,
+ &attach_owner);
+ if (ret < 0)
@@ -8674,7 +10755,6 @@ index 0000000..bbdf0f2
+
+ b->id = atomic64_inc_return(&domain->last_id);
+ b->bus_flags = flags;
-+ b->attach_flags_req = attach_recv;
+ b->attach_flags_owner = attach_owner;
+ generate_random_uuid(b->id128);
+ b->bloom = *bloom;
@@ -8803,9 +10883,9 @@ index 0000000..bbdf0f2
+ * kdbus_bus_broadcast() - send a message to all subscribed connections
+ * @bus: The bus the connections are connected to
+ * @conn_src: The source connection, may be %NULL for kernel notifications
-+ * @kmsg: The message to send.
++ * @staging: Staging object containing the message to send
+ *
-+ * Send @kmsg to all connections that are currently active on the bus.
++ * Send message to all connections that are currently active on the bus.
+ * Connections must still have matches installed in order to let the message
+ * pass.
+ *
@@ -8813,7 +10893,7 @@ index 0000000..bbdf0f2
+ */
+void kdbus_bus_broadcast(struct kdbus_bus *bus,
+ struct kdbus_conn *conn_src,
-+ struct kdbus_kmsg *kmsg)
++ struct kdbus_staging *staging)
+{
+ struct kdbus_conn *conn_dst;
+ unsigned int i;
@@ -8830,12 +10910,10 @@ index 0000000..bbdf0f2
+ * can re-construct order via sequence numbers), but we should at least
+ * try to avoid re-ordering for monitors.
+ */
-+ kdbus_bus_eavesdrop(bus, conn_src, kmsg);
++ kdbus_bus_eavesdrop(bus, conn_src, staging);
+
+ down_read(&bus->conn_rwlock);
+ hash_for_each(bus->conn_hash, i, conn_dst, hentry) {
-+ if (conn_dst->id == kmsg->msg.src_id)
-+ continue;
+ if (!kdbus_conn_is_ordinary(conn_dst))
+ continue;
+
@@ -8843,8 +10921,8 @@ index 0000000..bbdf0f2
+ * Check if there is a match for the kmsg object in
+ * the destination connection match db
+ */
-+ if (!kdbus_match_db_match_kmsg(conn_dst->match_db, conn_src,
-+ kmsg))
++ if (!kdbus_match_db_match_msg(conn_dst->match_db, conn_src,
++ staging))
+ continue;
+
+ if (conn_src) {
@@ -8855,13 +10933,6 @@ index 0000000..bbdf0f2
+ */
+ if (!kdbus_conn_policy_talk(conn_dst, NULL, conn_src))
+ continue;
-+
-+ ret = kdbus_kmsg_collect_metadata(kmsg, conn_src,
-+ conn_dst);
-+ if (ret < 0) {
-+ kdbus_conn_lost_message(conn_dst);
-+ continue;
-+ }
+ } else {
+ /*
+ * Check if there is a policy db that prevents the
@@ -8869,11 +10940,12 @@ index 0000000..bbdf0f2
+ * notification
+ */
+ if (!kdbus_conn_policy_see_notification(conn_dst, NULL,
-+ kmsg))
++ staging->msg))
+ continue;
+ }
+
-+ ret = kdbus_conn_entry_insert(conn_src, conn_dst, kmsg, NULL);
++ ret = kdbus_conn_entry_insert(conn_src, conn_dst, staging,
++ NULL, NULL);
+ if (ret < 0)
+ kdbus_conn_lost_message(conn_dst);
+ }
@@ -8884,16 +10956,16 @@ index 0000000..bbdf0f2
+ * kdbus_bus_eavesdrop() - send a message to all subscribed monitors
+ * @bus: The bus the monitors are connected to
+ * @conn_src: The source connection, may be %NULL for kernel notifications
-+ * @kmsg: The message to send.
++ * @staging: Staging object containing the message to send
+ *
-+ * Send @kmsg to all monitors that are currently active on the bus. Monitors
++ * Send message to all monitors that are currently active on the bus. Monitors
+ * must still have matches installed in order to let the message pass.
+ *
+ * The caller must hold the name-registry lock of @bus.
+ */
+void kdbus_bus_eavesdrop(struct kdbus_bus *bus,
+ struct kdbus_conn *conn_src,
-+ struct kdbus_kmsg *kmsg)
++ struct kdbus_staging *staging)
+{
+ struct kdbus_conn *conn_dst;
+ int ret;
@@ -8907,16 +10979,8 @@ index 0000000..bbdf0f2
+
+ down_read(&bus->conn_rwlock);
+ list_for_each_entry(conn_dst, &bus->monitors_list, monitor_entry) {
-+ if (conn_src) {
-+ ret = kdbus_kmsg_collect_metadata(kmsg, conn_src,
-+ conn_dst);
-+ if (ret < 0) {
-+ kdbus_conn_lost_message(conn_dst);
-+ continue;
-+ }
-+ }
-+
-+ ret = kdbus_conn_entry_insert(conn_src, conn_dst, kmsg, NULL);
++ ret = kdbus_conn_entry_insert(conn_src, conn_dst, staging,
++ NULL, NULL);
+ if (ret < 0)
+ kdbus_conn_lost_message(conn_dst);
+ }
@@ -8943,7 +11007,6 @@ index 0000000..bbdf0f2
+ { .type = KDBUS_ITEM_MAKE_NAME, .mandatory = true },
+ { .type = KDBUS_ITEM_BLOOM_PARAMETER, .mandatory = true },
+ { .type = KDBUS_ITEM_ATTACH_FLAGS_SEND },
-+ { .type = KDBUS_ITEM_ATTACH_FLAGS_RECV },
+ };
+ struct kdbus_args args = {
+ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
@@ -8962,7 +11025,6 @@ index 0000000..bbdf0f2
+ bus = kdbus_bus_new(domain,
+ argv[1].item->str, &argv[2].item->bloom_parameter,
+ argv[3].item ? argv[3].item->data64 : NULL,
-+ argv[4].item ? argv[4].item->data64 : NULL,
+ cmd->flags, current_euid(), current_egid());
+ if (IS_ERR(bus)) {
+ ret = PTR_ERR(bus);
@@ -9029,13 +11091,12 @@ index 0000000..bbdf0f2
+ struct kdbus_cmd_info *cmd;
+ struct kdbus_bus *bus = conn->ep->bus;
+ struct kdbus_pool_slice *slice = NULL;
++ struct kdbus_item *meta_items = NULL;
+ struct kdbus_item_header item_hdr;
+ struct kdbus_info info = {};
-+ size_t meta_size, name_len;
-+ struct kvec kvec[5];
-+ u64 hdr_size = 0;
-+ u64 attach_flags;
-+ size_t cnt = 0;
++ size_t meta_size, name_len, cnt = 0;
++ struct kvec kvec[6];
++ u64 attach_flags, size = 0;
+ int ret;
+
+ struct kdbus_arg argv[] = {
@@ -9057,8 +11118,8 @@ index 0000000..bbdf0f2
+
+ attach_flags &= bus->attach_flags_owner;
+
-+ ret = kdbus_meta_export_prepare(bus->creator_meta, NULL,
-+ &attach_flags, &meta_size);
++ ret = kdbus_meta_emit(bus->creator_meta, NULL, NULL, conn,
++ attach_flags, &meta_items, &meta_size);
+ if (ret < 0)
+ goto exit;
+
@@ -9068,30 +11129,29 @@ index 0000000..bbdf0f2
+ item_hdr.type = KDBUS_ITEM_MAKE_NAME;
+ item_hdr.size = KDBUS_ITEM_HEADER_SIZE + name_len;
+
-+ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &hdr_size);
-+ kdbus_kvec_set(&kvec[cnt++], &item_hdr, sizeof(item_hdr), &hdr_size);
-+ kdbus_kvec_set(&kvec[cnt++], bus->node.name, name_len, &hdr_size);
-+ cnt += !!kdbus_kvec_pad(&kvec[cnt], &hdr_size);
++ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &size);
++ kdbus_kvec_set(&kvec[cnt++], &item_hdr, sizeof(item_hdr), &size);
++ kdbus_kvec_set(&kvec[cnt++], bus->node.name, name_len, &size);
++ cnt += !!kdbus_kvec_pad(&kvec[cnt], &size);
++ if (meta_size > 0) {
++ kdbus_kvec_set(&kvec[cnt++], meta_items, meta_size, &size);
++ cnt += !!kdbus_kvec_pad(&kvec[cnt], &size);
++ }
++
++ info.size = size;
+
-+ slice = kdbus_pool_slice_alloc(conn->pool, hdr_size + meta_size, false);
++ slice = kdbus_pool_slice_alloc(conn->pool, size, false);
+ if (IS_ERR(slice)) {
+ ret = PTR_ERR(slice);
+ slice = NULL;
+ goto exit;
+ }
+
-+ ret = kdbus_meta_export(bus->creator_meta, NULL, attach_flags,
-+ slice, hdr_size, &meta_size);
++ ret = kdbus_pool_slice_copy_kvec(slice, 0, kvec, cnt, size);
+ if (ret < 0)
+ goto exit;
+
-+ info.size = hdr_size + meta_size;
-+
-+ ret = kdbus_pool_slice_copy_kvec(slice, 0, kvec, cnt, hdr_size);
-+ if (ret < 0)
-+ goto exit;
-+
-+ kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->info_size);
++ kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->info_size);
+
+ if (kdbus_member_set_user(&cmd->offset, argp, typeof(*cmd), offset) ||
+ kdbus_member_set_user(&cmd->info_size, argp,
@@ -9100,15 +11160,15 @@ index 0000000..bbdf0f2
+
+exit:
+ kdbus_pool_slice_release(slice);
-+
++ kfree(meta_items);
+ return kdbus_args_clear(&args, ret);
+}
diff --git a/ipc/kdbus/bus.h b/ipc/kdbus/bus.h
new file mode 100644
-index 0000000..5bea5ef
+index 0000000..238986e
--- /dev/null
+++ b/ipc/kdbus/bus.h
-@@ -0,0 +1,101 @@
+@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -9140,7 +11200,7 @@ index 0000000..5bea5ef
+
+struct kdbus_conn;
+struct kdbus_domain;
-+struct kdbus_kmsg;
++struct kdbus_staging;
+struct kdbus_user;
+
+/**
@@ -9148,7 +11208,6 @@ index 0000000..5bea5ef
+ * @node: kdbus_node
+ * @id: ID of this bus in the domain
+ * @bus_flags: Simple pass-through flags from userspace to userspace
-+ * @attach_flags_req: KDBUS_ATTACH_* flags required by connecting peers
+ * @attach_flags_owner: KDBUS_ATTACH_* flags of bus creator that other
+ * connections can see or query
+ * @id128: Unique random 128 bit ID of this bus
@@ -9171,7 +11230,6 @@ index 0000000..5bea5ef
+ /* static */
+ u64 id;
+ u64 bus_flags;
-+ u64 attach_flags_req;
+ u64 attach_flags_owner;
+ u8 id128[16];
+ struct kdbus_bloom_parameter bloom;
@@ -9200,10 +11258,10 @@ index 0000000..5bea5ef
+struct kdbus_conn *kdbus_bus_find_conn_by_id(struct kdbus_bus *bus, u64 id);
+void kdbus_bus_broadcast(struct kdbus_bus *bus,
+ struct kdbus_conn *conn_src,
-+ struct kdbus_kmsg *kmsg);
++ struct kdbus_staging *staging);
+void kdbus_bus_eavesdrop(struct kdbus_bus *bus,
+ struct kdbus_conn *conn_src,
-+ struct kdbus_kmsg *kmsg);
++ struct kdbus_staging *staging);
+
+struct kdbus_bus *kdbus_cmd_bus_make(struct kdbus_domain *domain,
+ void __user *argp);
@@ -9212,10 +11270,10 @@ index 0000000..5bea5ef
+#endif
diff --git a/ipc/kdbus/connection.c b/ipc/kdbus/connection.c
new file mode 100644
-index 0000000..9993753
+index 0000000..d94b417e
--- /dev/null
+++ b/ipc/kdbus/connection.c
-@@ -0,0 +1,2178 @@
+@@ -0,0 +1,2207 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -9330,10 +11388,6 @@ index 0000000..9993753
+ if (ret < 0)
+ return ERR_PTR(ret);
+
-+ /* The attach flags must always satisfy the bus requirements. */
-+ if (bus->attach_flags_req & ~attach_flags_send)
-+ return ERR_PTR(-ECONNREFUSED);
-+
+ conn = kzalloc(sizeof(*conn), GFP_KERNEL);
+ if (!conn)
+ return ERR_PTR(-ENOMEM);
@@ -9352,6 +11406,8 @@ index 0000000..9993753
+ atomic_set(&conn->lost_count, 0);
+ INIT_DELAYED_WORK(&conn->work, kdbus_reply_list_scan_work);
+ conn->cred = get_current_cred();
++ conn->pid = get_pid(task_pid(current));
++ get_fs_root(current->fs, &conn->root_path);
+ init_waitqueue_head(&conn->wait);
+ kdbus_queue_init(&conn->queue);
+ conn->privileged = privileged;
@@ -9391,22 +11447,28 @@ index 0000000..9993753
+ BUILD_BUG_ON(sizeof(bus->id128) != sizeof(hello->id128));
+ memcpy(hello->id128, bus->id128, sizeof(hello->id128));
+
-+ conn->meta = kdbus_meta_proc_new();
-+ if (IS_ERR(conn->meta)) {
-+ ret = PTR_ERR(conn->meta);
-+ conn->meta = NULL;
-+ goto exit_unref;
-+ }
-+
+ /* privileged processes can impersonate somebody else */
+ if (creds || pids || seclabel) {
-+ ret = kdbus_meta_proc_fake(conn->meta, creds, pids, seclabel);
-+ if (ret < 0)
++ conn->meta_fake = kdbus_meta_fake_new();
++ if (IS_ERR(conn->meta_fake)) {
++ ret = PTR_ERR(conn->meta_fake);
++ conn->meta_fake = NULL;
+ goto exit_unref;
++ }
+
-+ conn->faked_meta = true;
++ ret = kdbus_meta_fake_collect(conn->meta_fake,
++ creds, pids, seclabel);
++ if (ret < 0)
++ goto exit_unref;
+ } else {
-+ ret = kdbus_meta_proc_collect(conn->meta,
++ conn->meta_proc = kdbus_meta_proc_new();
++ if (IS_ERR(conn->meta_proc)) {
++ ret = PTR_ERR(conn->meta_proc);
++ conn->meta_proc = NULL;
++ goto exit_unref;
++ }
++
++ ret = kdbus_meta_proc_collect(conn->meta_proc,
+ KDBUS_ATTACH_CREDS |
+ KDBUS_ATTACH_PIDS |
+ KDBUS_ATTACH_AUXGROUPS |
@@ -9489,10 +11551,13 @@ index 0000000..9993753
+ kdbus_user_unref(conn->user);
+ }
+
-+ kdbus_meta_proc_unref(conn->meta);
++ kdbus_meta_fake_free(conn->meta_fake);
++ kdbus_meta_proc_unref(conn->meta_proc);
+ kdbus_match_db_free(conn->match_db);
+ kdbus_pool_free(conn->pool);
+ kdbus_ep_unref(conn->ep);
++ path_put(&conn->root_path);
++ put_pid(conn->pid);
+ put_cred(conn->cred);
+ kfree(conn->description);
+ kfree(conn->quota);
@@ -9824,9 +11889,9 @@ index 0000000..9993753
+}
+
+struct kdbus_quota {
-+ uint32_t memory;
-+ uint16_t msgs;
-+ uint8_t fds;
++ u32 memory;
++ u16 msgs;
++ u8 fds;
+};
+
+/**
@@ -9864,7 +11929,7 @@ index 0000000..9993753
+ * allocation schemes. Furthermore, resource utilization should be
+ * maximized, so only minimal resources stay reserved. However, we need
+ * to adapt to a dynamic number of users, as we cannot know how many
-+ * users will talk to a connection. Therefore, the current allocations
++ * users will talk to a connection. Therefore, the current allocation
+ * works like this:
+ * We limit the number of bytes in a destination's pool per sending
+ * user. The space available for a user is 33% of the unused pool space
@@ -9906,7 +11971,7 @@ index 0000000..9993753
+
+ /*
+ * Pool owner slices are un-accounted slices; they can claim more
-+ * than 50% of the queue. However, the slice we're dealing with here
++ * than 50% of the queue. However, the slices we're dealing with here
+ * belong to the incoming queue, hence they are 'accounted' slices
+ * to which the 50%-limit applies.
+ */
@@ -9988,9 +12053,9 @@ index 0000000..9993753
+
+/* Callers should take the conn_dst lock */
+static struct kdbus_queue_entry *
-+kdbus_conn_entry_make(struct kdbus_conn *conn_dst,
-+ const struct kdbus_kmsg *kmsg,
-+ struct kdbus_user *user)
++kdbus_conn_entry_make(struct kdbus_conn *conn_src,
++ struct kdbus_conn *conn_dst,
++ struct kdbus_staging *staging)
+{
+ /* The remote connection was disconnected */
+ if (!kdbus_conn_active(conn_dst))
@@ -10005,10 +12070,10 @@ index 0000000..9993753
+ */
+ if (!kdbus_conn_is_monitor(conn_dst) &&
+ !(conn_dst->flags & KDBUS_HELLO_ACCEPT_FD) &&
-+ kmsg->res && kmsg->res->fds_count > 0)
++ staging->gaps && staging->gaps->n_fds > 0)
+ return ERR_PTR(-ECOMM);
+
-+ return kdbus_queue_entry_new(conn_dst, kmsg, user);
++ return kdbus_queue_entry_new(conn_src, conn_dst, staging);
+}
+
+/*
@@ -10017,12 +12082,11 @@ index 0000000..9993753
+ * The connection's queue will never get to see it.
+ */
+static int kdbus_conn_entry_sync_attach(struct kdbus_conn *conn_dst,
-+ const struct kdbus_kmsg *kmsg,
++ struct kdbus_staging *staging,
+ struct kdbus_reply *reply_wake)
+{
+ struct kdbus_queue_entry *entry;
-+ int remote_ret;
-+ int ret = 0;
++ int remote_ret, ret = 0;
+
+ mutex_lock(&reply_wake->reply_dst->lock);
+
@@ -10031,8 +12095,8 @@ index 0000000..9993753
+ * entry and attach it to the reply object
+ */
+ if (reply_wake->waiting) {
-+ entry = kdbus_conn_entry_make(conn_dst, kmsg,
-+ reply_wake->reply_src->user);
++ entry = kdbus_conn_entry_make(reply_wake->reply_src, conn_dst,
++ staging);
+ if (IS_ERR(entry))
+ ret = PTR_ERR(entry);
+ else
@@ -10073,23 +12137,24 @@ index 0000000..9993753
+ * kdbus_conn_entry_insert() - enqueue a message into the receiver's pool
+ * @conn_src: The sending connection
+ * @conn_dst: The connection to queue into
-+ * @kmsg: The kmsg to queue
++ * @staging: Message to send
+ * @reply: The reply tracker to attach to the queue entry
++ * @name: Destination name this msg is sent to, or NULL
+ *
+ * Return: 0 on success. negative error otherwise.
+ */
+int kdbus_conn_entry_insert(struct kdbus_conn *conn_src,
+ struct kdbus_conn *conn_dst,
-+ const struct kdbus_kmsg *kmsg,
-+ struct kdbus_reply *reply)
++ struct kdbus_staging *staging,
++ struct kdbus_reply *reply,
++ const struct kdbus_name_entry *name)
+{
+ struct kdbus_queue_entry *entry;
+ int ret;
+
+ kdbus_conn_lock2(conn_src, conn_dst);
+
-+ entry = kdbus_conn_entry_make(conn_dst, kmsg,
-+ conn_src ? conn_src->user : NULL);
++ entry = kdbus_conn_entry_make(conn_src, conn_dst, staging);
+ if (IS_ERR(entry)) {
+ ret = PTR_ERR(entry);
+ goto exit_unlock;
@@ -10101,6 +12166,14 @@ index 0000000..9993753
+ schedule_delayed_work(&conn_src->work, 0);
+ }
+
++ /*
++ * Record the sequence number of the registered name; it will
++ * be remembered by the queue, in case messages addressed to a
++ * name need to be moved from or to an activator.
++ */
++ if (name)
++ entry->dst_name_id = name->name_id;
++
+ kdbus_queue_entry_enqueue(entry, reply);
+ wake_up_interruptible(&conn_dst->wait);
+
@@ -10233,22 +12306,18 @@ index 0000000..9993753
+}
+
+static int kdbus_pin_dst(struct kdbus_bus *bus,
-+ struct kdbus_kmsg *kmsg,
++ struct kdbus_staging *staging,
+ struct kdbus_name_entry **out_name,
+ struct kdbus_conn **out_dst)
+{
-+ struct kdbus_msg_resources *res = kmsg->res;
++ const struct kdbus_msg *msg = staging->msg;
+ struct kdbus_name_entry *name = NULL;
+ struct kdbus_conn *dst = NULL;
-+ struct kdbus_msg *msg = &kmsg->msg;
+ int ret;
+
-+ if (WARN_ON(!res))
-+ return -EINVAL;
-+
+ lockdep_assert_held(&bus->name_registry->rwlock);
+
-+ if (!res->dst_name) {
++ if (!staging->dst_name) {
+ dst = kdbus_bus_find_conn_by_id(bus, msg->dst_id);
+ if (!dst)
+ return -ENXIO;
@@ -10259,7 +12328,7 @@ index 0000000..9993753
+ }
+ } else {
+ name = kdbus_name_lookup_unlocked(bus->name_registry,
-+ res->dst_name);
++ staging->dst_name);
+ if (!name)
+ return -ESRCH;
+
@@ -10285,13 +12354,6 @@ index 0000000..9993753
+ ret = -EADDRNOTAVAIL;
+ goto error;
+ }
-+
-+ /*
-+ * Record the sequence number of the registered name; it will
-+ * be passed on to the queue, in case messages addressed to a
-+ * name need to be moved from or to an activator.
-+ */
-+ kmsg->dst_name_id = name->name_id;
+ }
+
+ *out_name = name;
@@ -10303,17 +12365,19 @@ index 0000000..9993753
+ return ret;
+}
+
-+static int kdbus_conn_reply(struct kdbus_conn *src, struct kdbus_kmsg *kmsg)
++static int kdbus_conn_reply(struct kdbus_conn *src,
++ struct kdbus_staging *staging)
+{
++ const struct kdbus_msg *msg = staging->msg;
+ struct kdbus_name_entry *name = NULL;
+ struct kdbus_reply *reply, *wake = NULL;
+ struct kdbus_conn *dst = NULL;
+ struct kdbus_bus *bus = src->ep->bus;
+ int ret;
+
-+ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
-+ WARN_ON(kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY) ||
-+ WARN_ON(kmsg->msg.flags & KDBUS_MSG_SIGNAL))
++ if (WARN_ON(msg->dst_id == KDBUS_DST_ID_BROADCAST) ||
++ WARN_ON(msg->flags & KDBUS_MSG_EXPECT_REPLY) ||
++ WARN_ON(msg->flags & KDBUS_MSG_SIGNAL))
+ return -EINVAL;
+
+ /* name-registry must be locked for lookup *and* collecting data */
@@ -10321,12 +12385,12 @@ index 0000000..9993753
+
+ /* find and pin destination */
+
-+ ret = kdbus_pin_dst(bus, kmsg, &name, &dst);
++ ret = kdbus_pin_dst(bus, staging, &name, &dst);
+ if (ret < 0)
+ goto exit;
+
+ mutex_lock(&dst->lock);
-+ reply = kdbus_reply_find(src, dst, kmsg->msg.cookie_reply);
++ reply = kdbus_reply_find(src, dst, msg->cookie_reply);
+ if (reply) {
+ if (reply->sync)
+ wake = kdbus_reply_ref(reply);
@@ -10339,20 +12403,14 @@ index 0000000..9993753
+ goto exit;
+ }
+
-+ /* attach metadata */
-+
-+ ret = kdbus_kmsg_collect_metadata(kmsg, src, dst);
-+ if (ret < 0)
-+ goto exit;
-+
+ /* send message */
+
-+ kdbus_bus_eavesdrop(bus, src, kmsg);
++ kdbus_bus_eavesdrop(bus, src, staging);
+
+ if (wake)
-+ ret = kdbus_conn_entry_sync_attach(dst, kmsg, wake);
++ ret = kdbus_conn_entry_sync_attach(dst, staging, wake);
+ else
-+ ret = kdbus_conn_entry_insert(src, dst, kmsg, NULL);
++ ret = kdbus_conn_entry_insert(src, dst, staging, NULL, name);
+
+exit:
+ up_read(&bus->name_registry->rwlock);
@@ -10362,24 +12420,25 @@ index 0000000..9993753
+}
+
+static struct kdbus_reply *kdbus_conn_call(struct kdbus_conn *src,
-+ struct kdbus_kmsg *kmsg,
++ struct kdbus_staging *staging,
+ ktime_t exp)
+{
++ const struct kdbus_msg *msg = staging->msg;
+ struct kdbus_name_entry *name = NULL;
+ struct kdbus_reply *wait = NULL;
+ struct kdbus_conn *dst = NULL;
+ struct kdbus_bus *bus = src->ep->bus;
+ int ret;
+
-+ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
-+ WARN_ON(kmsg->msg.flags & KDBUS_MSG_SIGNAL) ||
-+ WARN_ON(!(kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY)))
++ if (WARN_ON(msg->dst_id == KDBUS_DST_ID_BROADCAST) ||
++ WARN_ON(msg->flags & KDBUS_MSG_SIGNAL) ||
++ WARN_ON(!(msg->flags & KDBUS_MSG_EXPECT_REPLY)))
+ return ERR_PTR(-EINVAL);
+
+ /* resume previous wait-context, if available */
+
+ mutex_lock(&src->lock);
-+ wait = kdbus_reply_find(NULL, src, kmsg->msg.cookie);
++ wait = kdbus_reply_find(NULL, src, msg->cookie);
+ if (wait) {
+ if (wait->interrupted) {
+ kdbus_reply_ref(wait);
@@ -10401,7 +12460,7 @@ index 0000000..9993753
+
+ /* find and pin destination */
+
-+ ret = kdbus_pin_dst(bus, kmsg, &name, &dst);
++ ret = kdbus_pin_dst(bus, staging, &name, &dst);
+ if (ret < 0)
+ goto exit;
+
@@ -10410,24 +12469,18 @@ index 0000000..9993753
+ goto exit;
+ }
+
-+ wait = kdbus_reply_new(dst, src, &kmsg->msg, name, true);
++ wait = kdbus_reply_new(dst, src, msg, name, true);
+ if (IS_ERR(wait)) {
+ ret = PTR_ERR(wait);
+ wait = NULL;
+ goto exit;
+ }
+
-+ /* attach metadata */
-+
-+ ret = kdbus_kmsg_collect_metadata(kmsg, src, dst);
-+ if (ret < 0)
-+ goto exit;
-+
+ /* send message */
+
-+ kdbus_bus_eavesdrop(bus, src, kmsg);
++ kdbus_bus_eavesdrop(bus, src, staging);
+
-+ ret = kdbus_conn_entry_insert(src, dst, kmsg, wait);
++ ret = kdbus_conn_entry_insert(src, dst, staging, wait, name);
+ if (ret < 0)
+ goto exit;
+
@@ -10443,18 +12496,20 @@ index 0000000..9993753
+ return wait;
+}
+
-+static int kdbus_conn_unicast(struct kdbus_conn *src, struct kdbus_kmsg *kmsg)
++static int kdbus_conn_unicast(struct kdbus_conn *src,
++ struct kdbus_staging *staging)
+{
++ const struct kdbus_msg *msg = staging->msg;
+ struct kdbus_name_entry *name = NULL;
+ struct kdbus_reply *wait = NULL;
+ struct kdbus_conn *dst = NULL;
+ struct kdbus_bus *bus = src->ep->bus;
-+ bool is_signal = (kmsg->msg.flags & KDBUS_MSG_SIGNAL);
++ bool is_signal = (msg->flags & KDBUS_MSG_SIGNAL);
+ int ret = 0;
+
-+ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
-+ WARN_ON(!(kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY) &&
-+ kmsg->msg.cookie_reply != 0))
++ if (WARN_ON(msg->dst_id == KDBUS_DST_ID_BROADCAST) ||
++ WARN_ON(!(msg->flags & KDBUS_MSG_EXPECT_REPLY) &&
++ msg->cookie_reply != 0))
+ return -EINVAL;
+
+ /* name-registry must be locked for lookup *and* collecting data */
@@ -10462,23 +12517,23 @@ index 0000000..9993753
+
+ /* find and pin destination */
+
-+ ret = kdbus_pin_dst(bus, kmsg, &name, &dst);
++ ret = kdbus_pin_dst(bus, staging, &name, &dst);
+ if (ret < 0)
+ goto exit;
+
+ if (is_signal) {
+ /* like broadcasts we eavesdrop even if the msg is dropped */
-+ kdbus_bus_eavesdrop(bus, src, kmsg);
++ kdbus_bus_eavesdrop(bus, src, staging);
+
+ /* drop silently if peer is not interested or not privileged */
-+ if (!kdbus_match_db_match_kmsg(dst->match_db, src, kmsg) ||
++ if (!kdbus_match_db_match_msg(dst->match_db, src, staging) ||
+ !kdbus_conn_policy_talk(dst, NULL, src))
+ goto exit;
+ } else if (!kdbus_conn_policy_talk(src, current_cred(), dst)) {
+ ret = -EPERM;
+ goto exit;
-+ } else if (kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY) {
-+ wait = kdbus_reply_new(dst, src, &kmsg->msg, name, false);
++ } else if (msg->flags & KDBUS_MSG_EXPECT_REPLY) {
++ wait = kdbus_reply_new(dst, src, msg, name, false);
+ if (IS_ERR(wait)) {
+ ret = PTR_ERR(wait);
+ wait = NULL;
@@ -10486,18 +12541,12 @@ index 0000000..9993753
+ }
+ }
+
-+ /* attach metadata */
-+
-+ ret = kdbus_kmsg_collect_metadata(kmsg, src, dst);
-+ if (ret < 0)
-+ goto exit;
-+
+ /* send message */
+
+ if (!is_signal)
-+ kdbus_bus_eavesdrop(bus, src, kmsg);
++ kdbus_bus_eavesdrop(bus, src, staging);
+
-+ ret = kdbus_conn_entry_insert(src, dst, kmsg, wait);
++ ret = kdbus_conn_entry_insert(src, dst, staging, wait, name);
+ if (ret < 0 && !is_signal)
+ goto exit;
+
@@ -10567,7 +12616,7 @@ index 0000000..9993753
+ continue;
+
+ if (!(conn_dst->flags & KDBUS_HELLO_ACCEPT_FD) &&
-+ e->msg_res && e->msg_res->fds_count > 0) {
++ e->gaps && e->gaps->n_fds > 0) {
+ kdbus_conn_lost_message(conn_dst);
+ kdbus_queue_entry_free(e);
+ continue;
@@ -10751,19 +12800,16 @@ index 0000000..9993753
+ * receive a given kernel notification
+ * @conn: Connection
+ * @conn_creds: Credentials of @conn to use for policy check
-+ * @kmsg: The message carrying the notification
++ * @msg: Notification message
+ *
-+ * This checks whether @conn is allowed to see the kernel notification @kmsg.
++ * This checks whether @conn is allowed to see the kernel notification.
+ *
+ * Return: true if allowed, false if not.
+ */
+bool kdbus_conn_policy_see_notification(struct kdbus_conn *conn,
+ const struct cred *conn_creds,
-+ const struct kdbus_kmsg *kmsg)
++ const struct kdbus_msg *msg)
+{
-+ if (WARN_ON(kmsg->msg.src_id != KDBUS_SRC_ID_KERNEL))
-+ return false;
-+
+ /*
+ * Depending on the notification type, broadcasted kernel notifications
+ * have to be filtered:
@@ -10776,12 +12822,12 @@ index 0000000..9993753
+ * broadcast to everyone, to allow tracking peers.
+ */
+
-+ switch (kmsg->notify_type) {
++ switch (msg->items[0].type) {
+ case KDBUS_ITEM_NAME_ADD:
+ case KDBUS_ITEM_NAME_REMOVE:
+ case KDBUS_ITEM_NAME_CHANGE:
+ return kdbus_conn_policy_see_name(conn, conn_creds,
-+ kmsg->notify_name);
++ msg->items[0].name_change.name);
+
+ case KDBUS_ITEM_ID_ADD:
+ case KDBUS_ITEM_ID_REMOVE:
@@ -10789,7 +12835,7 @@ index 0000000..9993753
+
+ default:
+ WARN(1, "Invalid type for notification broadcast: %llu\n",
-+ (unsigned long long)kmsg->notify_type);
++ (unsigned long long)msg->items[0].type);
+ return false;
+ }
+}
@@ -10927,13 +12973,14 @@ index 0000000..9993753
+ struct kdbus_pool_slice *slice = NULL;
+ struct kdbus_name_entry *entry = NULL;
+ struct kdbus_conn *owner_conn = NULL;
++ struct kdbus_item *meta_items = NULL;
+ struct kdbus_info info = {};
+ struct kdbus_cmd_info *cmd;
+ struct kdbus_bus *bus = conn->ep->bus;
-+ struct kvec kvec;
-+ size_t meta_size;
++ struct kvec kvec[3];
++ size_t meta_size, cnt = 0;
+ const char *name;
-+ u64 attach_flags;
++ u64 attach_flags, size = 0;
+ int ret;
+
+ struct kdbus_arg argv[] = {
@@ -10983,10 +13030,6 @@ index 0000000..9993753
+ goto exit;
+ }
+
-+ info.id = owner_conn->id;
-+ info.flags = owner_conn->flags;
-+ kdbus_kvec_set(&kvec, &info, sizeof(info), &info.size);
-+
+ attach_flags &= atomic64_read(&owner_conn->attach_flags_send);
+
+ conn_meta = kdbus_meta_conn_new();
@@ -10996,32 +13039,35 @@ index 0000000..9993753
+ goto exit;
+ }
+
-+ ret = kdbus_meta_conn_collect(conn_meta, NULL, owner_conn,
-+ attach_flags);
++ ret = kdbus_meta_conn_collect(conn_meta, owner_conn, 0, attach_flags);
+ if (ret < 0)
+ goto exit;
+
-+ ret = kdbus_meta_export_prepare(owner_conn->meta, conn_meta,
-+ &attach_flags, &meta_size);
++ ret = kdbus_meta_emit(owner_conn->meta_proc, owner_conn->meta_fake,
++ conn_meta, conn, attach_flags,
++ &meta_items, &meta_size);
+ if (ret < 0)
+ goto exit;
+
-+ slice = kdbus_pool_slice_alloc(conn->pool,
-+ info.size + meta_size, false);
++ info.id = owner_conn->id;
++ info.flags = owner_conn->flags;
++
++ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &size);
++ if (meta_size > 0) {
++ kdbus_kvec_set(&kvec[cnt++], meta_items, meta_size, &size);
++ cnt += !!kdbus_kvec_pad(&kvec[cnt], &size);
++ }
++
++ info.size = size;
++
++ slice = kdbus_pool_slice_alloc(conn->pool, size, false);
+ if (IS_ERR(slice)) {
+ ret = PTR_ERR(slice);
+ slice = NULL;
+ goto exit;
+ }
+
-+ ret = kdbus_meta_export(owner_conn->meta, conn_meta, attach_flags,
-+ slice, sizeof(info), &meta_size);
-+ if (ret < 0)
-+ goto exit;
-+
-+ info.size += meta_size;
-+
-+ ret = kdbus_pool_slice_copy_kvec(slice, 0, &kvec, 1, sizeof(info));
++ ret = kdbus_pool_slice_copy_kvec(slice, 0, kvec, cnt, size);
+ if (ret < 0)
+ goto exit;
+
@@ -11039,6 +13085,7 @@ index 0000000..9993753
+exit:
+ up_read(&bus->name_registry->rwlock);
+ kdbus_pool_slice_release(slice);
++ kfree(meta_items);
+ kdbus_meta_conn_unref(conn_meta);
+ kdbus_conn_unref(owner_conn);
+ return kdbus_args_clear(&args, ret);
@@ -11053,7 +13100,6 @@ index 0000000..9993753
+ */
+int kdbus_cmd_update(struct kdbus_conn *conn, void __user *argp)
+{
-+ struct kdbus_bus *bus = conn->ep->bus;
+ struct kdbus_item *item_policy;
+ u64 *item_attach_send = NULL;
+ u64 *item_attach_recv = NULL;
@@ -11094,11 +13140,6 @@ index 0000000..9993753
+ &attach_send);
+ if (ret < 0)
+ goto exit;
-+
-+ if (bus->attach_flags_req & ~attach_send) {
-+ ret = -EINVAL;
-+ goto exit;
-+ }
+ }
+
+ if (item_attach_recv) {
@@ -11151,10 +13192,12 @@ index 0000000..9993753
+int kdbus_cmd_send(struct kdbus_conn *conn, struct file *f, void __user *argp)
+{
+ struct kdbus_cmd_send *cmd;
-+ struct kdbus_kmsg *kmsg = NULL;
++ struct kdbus_staging *staging = NULL;
++ struct kdbus_msg *msg = NULL;
+ struct file *cancel_fd = NULL;
-+ int ret;
++ int ret, ret2;
+
++ /* command arguments */
+ struct kdbus_arg argv[] = {
+ { .type = KDBUS_ITEM_NEGOTIATE },
+ { .type = KDBUS_ITEM_CANCEL_FD },
@@ -11166,12 +13209,48 @@ index 0000000..9993753
+ .argc = ARRAY_SIZE(argv),
+ };
+
++ /* message arguments */
++ struct kdbus_arg msg_argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_PAYLOAD_VEC, .multiple = true },
++ { .type = KDBUS_ITEM_PAYLOAD_MEMFD, .multiple = true },
++ { .type = KDBUS_ITEM_FDS },
++ { .type = KDBUS_ITEM_BLOOM_FILTER },
++ { .type = KDBUS_ITEM_DST_NAME },
++ };
++ struct kdbus_args msg_args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_MSG_EXPECT_REPLY |
++ KDBUS_MSG_NO_AUTO_START |
++ KDBUS_MSG_SIGNAL,
++ .argv = msg_argv,
++ .argc = ARRAY_SIZE(msg_argv),
++ };
++
+ if (!kdbus_conn_is_ordinary(conn))
+ return -EOPNOTSUPP;
+
++ /* make sure to parse both, @cmd and @msg on negotiation */
++
+ ret = kdbus_args_parse(&args, argp, &cmd);
-+ if (ret != 0)
-+ return ret;
++ if (ret < 0)
++ goto exit;
++ else if (ret > 0 && !cmd->msg_address) /* negotiation without msg */
++ goto exit;
++
++ ret2 = kdbus_args_parse_msg(&msg_args, KDBUS_PTR(cmd->msg_address),
++ &msg);
++ if (ret2 < 0) { /* cannot parse message */
++ ret = ret2;
++ goto exit;
++ } else if (ret2 > 0 && !ret) { /* msg-negot implies cmd-negot */
++ ret = -EINVAL;
++ goto exit;
++ } else if (ret > 0) { /* negotiation */
++ goto exit;
++ }
++
++ /* here we parsed both, @cmd and @msg, and neither wants negotiation */
+
+ cmd->reply.return_flags = 0;
+ kdbus_pool_publish_empty(conn->pool, &cmd->reply.offset,
@@ -11190,23 +13269,30 @@ index 0000000..9993753
+ }
+ }
+
-+ kmsg = kdbus_kmsg_new_from_cmd(conn, cmd);
-+ if (IS_ERR(kmsg)) {
-+ ret = PTR_ERR(kmsg);
-+ kmsg = NULL;
++ /* patch-in the source of this message */
++ if (msg->src_id > 0 && msg->src_id != conn->id) {
++ ret = -EINVAL;
++ goto exit;
++ }
++ msg->src_id = conn->id;
++
++ staging = kdbus_staging_new_user(conn->ep->bus, cmd, msg);
++ if (IS_ERR(staging)) {
++ ret = PTR_ERR(staging);
++ staging = NULL;
+ goto exit;
+ }
+
-+ if (kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) {
++ if (msg->dst_id == KDBUS_DST_ID_BROADCAST) {
+ down_read(&conn->ep->bus->name_registry->rwlock);
-+ kdbus_bus_broadcast(conn->ep->bus, conn, kmsg);
++ kdbus_bus_broadcast(conn->ep->bus, conn, staging);
+ up_read(&conn->ep->bus->name_registry->rwlock);
+ } else if (cmd->flags & KDBUS_SEND_SYNC_REPLY) {
+ struct kdbus_reply *r;
+ ktime_t exp;
+
-+ exp = ns_to_ktime(kmsg->msg.timeout_ns);
-+ r = kdbus_conn_call(conn, kmsg, exp);
++ exp = ns_to_ktime(msg->timeout_ns);
++ r = kdbus_conn_call(conn, staging, exp);
+ if (IS_ERR(r)) {
+ ret = PTR_ERR(r);
+ goto exit;
@@ -11216,13 +13302,13 @@ index 0000000..9993753
+ kdbus_reply_unref(r);
+ if (ret < 0)
+ goto exit;
-+ } else if ((kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY) ||
-+ kmsg->msg.cookie_reply == 0) {
-+ ret = kdbus_conn_unicast(conn, kmsg);
++ } else if ((msg->flags & KDBUS_MSG_EXPECT_REPLY) ||
++ msg->cookie_reply == 0) {
++ ret = kdbus_conn_unicast(conn, staging);
+ if (ret < 0)
+ goto exit;
+ } else {
-+ ret = kdbus_conn_reply(conn, kmsg);
++ ret = kdbus_conn_reply(conn, staging);
+ if (ret < 0)
+ goto exit;
+ }
@@ -11233,7 +13319,8 @@ index 0000000..9993753
+exit:
+ if (cancel_fd)
+ fput(cancel_fd);
-+ kdbus_kmsg_free(kmsg);
++ kdbus_staging_free(staging);
++ ret = kdbus_args_clear(&msg_args, ret);
+ return kdbus_args_clear(&args, ret);
+}
+
@@ -11396,10 +13483,10 @@ index 0000000..9993753
+}
diff --git a/ipc/kdbus/connection.h b/ipc/kdbus/connection.h
new file mode 100644
-index 0000000..d1ffe90
+index 0000000..5ee864e
--- /dev/null
+++ b/ipc/kdbus/connection.h
-@@ -0,0 +1,257 @@
+@@ -0,0 +1,261 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -11433,7 +13520,7 @@ index 0000000..d1ffe90
+ KDBUS_HELLO_MONITOR)
+
+struct kdbus_quota;
-+struct kdbus_kmsg;
++struct kdbus_staging;
+
+/**
+ * struct kdbus_conn - connection to a bus
@@ -11456,11 +13543,13 @@ index 0000000..d1ffe90
+ * @work: Delayed work to handle timeouts
+ * activator for
+ * @match_db: Subscription filter to broadcast messages
-+ * @meta: Active connection creator's metadata/credentials,
-+ * either from the handle or from HELLO
++ * @meta_proc: Process metadata of connection creator, or NULL
++ * @meta_fake: Faked metadata, or NULL
+ * @pool: The user's buffer to receive messages
+ * @user: Owner of the connection
+ * @cred: The credentials of the connection at creation time
++ * @pid: Pid at creation time
++ * @root_path: Root path at creation time
+ * @name_count: Number of owned well-known names
+ * @request_count: Number of pending requests issued by this
+ * connection that are waiting for replies from
@@ -11474,7 +13563,6 @@ index 0000000..d1ffe90
+ * @names_list: List of well-known names
+ * @names_queue_list: Well-known names this connection waits for
+ * @privileged: Whether this connection is privileged on the bus
-+ * @faked_meta: Whether the metadata was faked on HELLO
+ */
+struct kdbus_conn {
+ struct kref kref;
@@ -11495,10 +13583,13 @@ index 0000000..d1ffe90
+ struct list_head reply_list;
+ struct delayed_work work;
+ struct kdbus_match_db *match_db;
-+ struct kdbus_meta_proc *meta;
++ struct kdbus_meta_proc *meta_proc;
++ struct kdbus_meta_fake *meta_fake;
+ struct kdbus_pool *pool;
+ struct kdbus_user *user;
+ const struct cred *cred;
++ struct pid *pid;
++ struct path root_path;
+ atomic_t name_count;
+ atomic_t request_count;
+ atomic_t lost_count;
@@ -11514,7 +13605,6 @@ index 0000000..d1ffe90
+ struct list_head names_queue_list;
+
+ bool privileged:1;
-+ bool faked_meta:1;
+};
+
+struct kdbus_conn *kdbus_conn_ref(struct kdbus_conn *conn);
@@ -11531,8 +13621,9 @@ index 0000000..d1ffe90
+void kdbus_conn_lost_message(struct kdbus_conn *c);
+int kdbus_conn_entry_insert(struct kdbus_conn *conn_src,
+ struct kdbus_conn *conn_dst,
-+ const struct kdbus_kmsg *kmsg,
-+ struct kdbus_reply *reply);
++ struct kdbus_staging *staging,
++ struct kdbus_reply *reply,
++ const struct kdbus_name_entry *name);
+void kdbus_conn_move_messages(struct kdbus_conn *conn_dst,
+ struct kdbus_conn *conn_src,
+ u64 name_id);
@@ -11549,7 +13640,7 @@ index 0000000..d1ffe90
+ const char *name);
+bool kdbus_conn_policy_see_notification(struct kdbus_conn *conn,
+ const struct cred *curr_creds,
-+ const struct kdbus_kmsg *kmsg);
++ const struct kdbus_msg *msg);
+
+/* command dispatcher */
+struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, bool privileged,
@@ -12044,7 +14135,7 @@ index 0000000..447a2bd
+#endif
diff --git a/ipc/kdbus/endpoint.c b/ipc/kdbus/endpoint.c
new file mode 100644
-index 0000000..9a95a5e
+index 0000000..977964d
--- /dev/null
+++ b/ipc/kdbus/endpoint.c
@@ -0,0 +1,275 @@
@@ -12128,7 +14219,7 @@ index 0000000..9a95a5e
+ * @gid: The gid of the node
+ * @is_custom: Whether this is a custom endpoint
+ *
-+ * This function will create a new enpoint with the given
++ * This function will create a new endpoint with the given
+ * name and properties for a given bus.
+ *
+ * Return: a new kdbus_ep on success, ERR_PTR on failure.
@@ -12325,7 +14416,7 @@ index 0000000..9a95a5e
+}
diff --git a/ipc/kdbus/endpoint.h b/ipc/kdbus/endpoint.h
new file mode 100644
-index 0000000..d31954b
+index 0000000..bc1b94a
--- /dev/null
+++ b/ipc/kdbus/endpoint.h
@@ -0,0 +1,67 @@
@@ -12356,7 +14447,7 @@ index 0000000..d31954b
+struct kdbus_user;
+
+/**
-+ * struct kdbus_ep - enpoint to access a bus
++ * struct kdbus_ep - endpoint to access a bus
+ * @node: The kdbus node
+ * @lock: Endpoint data lock
+ * @bus: Bus behind this endpoint
@@ -12364,7 +14455,7 @@ index 0000000..d31954b
+ * @policy_db: Uploaded policy
+ * @conn_list: Connections of this endpoint
+ *
-+ * An enpoint offers access to a bus; the default endpoint node name is "bus".
++ * An endpoint offers access to a bus; the default endpoint node name is "bus".
+ * Additional custom endpoints to the same bus can be created and they can
+ * carry their own policies/filters.
+ */
@@ -12398,10 +14489,10 @@ index 0000000..d31954b
+#endif
diff --git a/ipc/kdbus/fs.c b/ipc/kdbus/fs.c
new file mode 100644
-index 0000000..d01f33b
+index 0000000..09c4809
--- /dev/null
+++ b/ipc/kdbus/fs.c
-@@ -0,0 +1,510 @@
+@@ -0,0 +1,508 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -12478,7 +14569,7 @@ index 0000000..d01f33b
+ * closest node to that position and cannot use our node pointer. This
+ * means iterating the rb-tree to find the closest match and start over
+ * from there.
-+ * Note that hash values are not neccessarily unique. Therefore, llseek
++ * Note that hash values are not necessarily unique. Therefore, llseek
+ * is not guaranteed to seek to the same node that you got when you
+ * retrieved the position. Seeking to 0, 1, 2 and >=INT_MAX is safe,
+ * though. We could use the inode-number as position, but this would
@@ -12729,9 +14820,7 @@ index 0000000..d01f33b
+ }
+
+ kill_anon_super(sb);
-+
-+ if (domain)
-+ kdbus_domain_unref(domain);
++ kdbus_domain_unref(domain);
+}
+
+static int fs_super_set(struct super_block *sb, void *data)
@@ -12948,10 +15037,10 @@ index 0000000..62f7d6a
+#endif
diff --git a/ipc/kdbus/handle.c b/ipc/kdbus/handle.c
new file mode 100644
-index 0000000..0752799
+index 0000000..e0e06b0
--- /dev/null
+++ b/ipc/kdbus/handle.c
-@@ -0,0 +1,702 @@
+@@ -0,0 +1,709 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -13080,6 +15169,7 @@ index 0000000..0752799
+/**
+ * __kdbus_args_parse() - parse payload of kdbus command
+ * @args: object to parse data into
++ * @is_cmd: whether this is a command or msg payload
+ * @argp: user-space location of command payload to parse
+ * @type_size: overall size of command payload to parse
+ * @items_offset: offset of items array in command payload
@@ -13094,10 +15184,14 @@ index 0000000..0752799
+ * If this function succeeded, you must call kdbus_args_clear() to release
+ * allocated resources before destroying @args.
+ *
++ * This can also be used to import kdbus_msg objects. In that case, @is_cmd must
++ * be set to 'false' and the 'return_flags' field will not be touched (as it
++ * doesn't exist on kdbus_msg).
++ *
+ * Return: On failure a negative error code is returned. Otherwise, 1 is
+ * returned if negotiation was requested, 0 if not.
+ */
-+int __kdbus_args_parse(struct kdbus_args *args, void __user *argp,
++int __kdbus_args_parse(struct kdbus_args *args, bool is_cmd, void __user *argp,
+ size_t type_size, size_t items_offset, void **out)
+{
+ u64 user_size;
@@ -13127,10 +15221,12 @@ index 0000000..0752799
+ goto error;
+ }
+
-+ args->cmd->return_flags = 0;
++ if (is_cmd)
++ args->cmd->return_flags = 0;
+ args->user = argp;
+ args->items = (void *)((u8 *)args->cmd + items_offset);
+ args->items_size = args->cmd->size - items_offset;
++ args->is_cmd = is_cmd;
+
+ if (args->cmd->flags & ~args->allowed_flags) {
+ ret = -EINVAL;
@@ -13179,8 +15275,8 @@ index 0000000..0752799
+ return ret;
+
+ if (!IS_ERR_OR_NULL(args->cmd)) {
-+ if (put_user(args->cmd->return_flags,
-+ &args->user->return_flags))
++ if (args->is_cmd && put_user(args->cmd->return_flags,
++ &args->user->return_flags))
+ ret = -EFAULT;
+ if (args->cmd != (void*)args->cmd_buf)
+ kfree(args->cmd);
@@ -13656,10 +15752,10 @@ index 0000000..0752799
+};
diff --git a/ipc/kdbus/handle.h b/ipc/kdbus/handle.h
new file mode 100644
-index 0000000..13c59d9
+index 0000000..8a36c05
--- /dev/null
+++ b/ipc/kdbus/handle.h
-@@ -0,0 +1,90 @@
+@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -13710,6 +15806,7 @@ index 0000000..13c59d9
+ * @cmd_buf: 512 bytes inline buf to avoid kmalloc() on small cmds
+ * @items: points to item array in @cmd
+ * @items_size: size of @items in bytes
++ * @is_cmd: whether this is a command-payload or msg-payload
+ *
+ * This structure is used to parse ioctl command payloads on each invocation.
+ * The ioctl handler has to pre-fill the flags and allowed items before passing
@@ -13730,9 +15827,10 @@ index 0000000..13c59d9
+
+ struct kdbus_item *items;
+ size_t items_size;
++ bool is_cmd : 1;
+};
+
-+int __kdbus_args_parse(struct kdbus_args *args, void __user *argp,
++int __kdbus_args_parse(struct kdbus_args *args, bool is_cmd, void __user *argp,
+ size_t type_size, size_t items_offset, void **out);
+int kdbus_args_clear(struct kdbus_args *args, int ret);
+
@@ -13744,7 +15842,18 @@ index 0000000..13c59d9
+ offsetof(struct kdbus_cmd, flags)); \
+ BUILD_BUG_ON(offsetof(typeof(**(_v)), return_flags) != \
+ offsetof(struct kdbus_cmd, return_flags)); \
-+ __kdbus_args_parse((_args), (_argp), sizeof(**(_v)), \
++ __kdbus_args_parse((_args), 1, (_argp), sizeof(**(_v)), \
++ offsetof(typeof(**(_v)), items), \
++ (void **)(_v)); \
++ })
++
++#define kdbus_args_parse_msg(_args, _argp, _v) \
++ ({ \
++ BUILD_BUG_ON(offsetof(typeof(**(_v)), size) != \
++ offsetof(struct kdbus_cmd, size)); \
++ BUILD_BUG_ON(offsetof(typeof(**(_v)), flags) != \
++ offsetof(struct kdbus_cmd, flags)); \
++ __kdbus_args_parse((_args), 0, (_argp), sizeof(**(_v)), \
+ offsetof(typeof(**(_v)), items), \
+ (void **)(_v)); \
+ })
@@ -13752,10 +15861,10 @@ index 0000000..13c59d9
+#endif
diff --git a/ipc/kdbus/item.c b/ipc/kdbus/item.c
new file mode 100644
-index 0000000..1ee72c2
+index 0000000..ce78dba
--- /dev/null
+++ b/ipc/kdbus/item.c
-@@ -0,0 +1,333 @@
+@@ -0,0 +1,293 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -13905,6 +16014,7 @@ index 0000000..1ee72c2
+ case KDBUS_ITEM_ATTACH_FLAGS_SEND:
+ case KDBUS_ITEM_ATTACH_FLAGS_RECV:
+ case KDBUS_ITEM_ID:
++ case KDBUS_ITEM_DST_ID:
+ if (payload_size != sizeof(u64))
+ return -EINVAL;
+ break;
@@ -14018,47 +16128,6 @@ index 0000000..1ee72c2
+ return 0;
+}
+
-+static struct kdbus_item *kdbus_items_get(const struct kdbus_item *items,
-+ size_t items_size,
-+ unsigned int item_type)
-+{
-+ const struct kdbus_item *iter, *found = NULL;
-+
-+ KDBUS_ITEMS_FOREACH(iter, items, items_size) {
-+ if (iter->type == item_type) {
-+ if (found)
-+ return ERR_PTR(-EEXIST);
-+ found = iter;
-+ }
-+ }
-+
-+ return (struct kdbus_item *)found ? : ERR_PTR(-EBADMSG);
-+}
-+
-+/**
-+ * kdbus_items_get_str() - get string from a list of items
-+ * @items: The items to walk
-+ * @items_size: The size of all items
-+ * @item_type: The item type to look for
-+ *
-+ * This function walks a list of items and searches for items of type
-+ * @item_type. If it finds exactly one such item, @str_ret will be set to
-+ * the .str member of the item.
-+ *
-+ * Return: the string, if the item was found exactly once, ERR_PTR(-EEXIST)
-+ * if the item was found more than once, and ERR_PTR(-EBADMSG) if there was
-+ * no item of the given type.
-+ */
-+const char *kdbus_items_get_str(const struct kdbus_item *items,
-+ size_t items_size,
-+ unsigned int item_type)
-+{
-+ const struct kdbus_item *item;
-+
-+ item = kdbus_items_get(items, items_size, item_type);
-+ return IS_ERR(item) ? ERR_CAST(item) : item->str;
-+}
-+
+/**
+ * kdbus_item_set() - Set item content
+ * @item: The item to modify
@@ -14091,10 +16160,10 @@ index 0000000..1ee72c2
+}
diff --git a/ipc/kdbus/item.h b/ipc/kdbus/item.h
new file mode 100644
-index 0000000..bca63b4
+index 0000000..3a7e6cc
--- /dev/null
+++ b/ipc/kdbus/item.h
-@@ -0,0 +1,64 @@
+@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -14152,19 +16221,16 @@ index 0000000..bca63b4
+int kdbus_item_validate_name(const struct kdbus_item *item);
+int kdbus_item_validate(const struct kdbus_item *item);
+int kdbus_items_validate(const struct kdbus_item *items, size_t items_size);
-+const char *kdbus_items_get_str(const struct kdbus_item *items,
-+ size_t items_size,
-+ unsigned int item_type);
+struct kdbus_item *kdbus_item_set(struct kdbus_item *item, u64 type,
+ const void *data, size_t len);
+
+#endif
diff --git a/ipc/kdbus/limits.h b/ipc/kdbus/limits.h
new file mode 100644
-index 0000000..6450f58
+index 0000000..c54925a
--- /dev/null
+++ b/ipc/kdbus/limits.h
-@@ -0,0 +1,64 @@
+@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -14186,9 +16252,6 @@ index 0000000..6450f58
+/* maximum size of message header and items */
+#define KDBUS_MSG_MAX_SIZE SZ_8K
+
-+/* maximum number of message items */
-+#define KDBUS_MSG_MAX_ITEMS 128
-+
+/* maximum number of memfd items per message */
+#define KDBUS_MSG_MAX_MEMFD_ITEMS 16
+
@@ -14351,10 +16414,10 @@ index 0000000..1ad4dc8
+MODULE_ALIAS_FS(KBUILD_MODNAME "fs");
diff --git a/ipc/kdbus/match.c b/ipc/kdbus/match.c
new file mode 100644
-index 0000000..cc083b4
+index 0000000..4ee6a1f
--- /dev/null
+++ b/ipc/kdbus/match.c
-@@ -0,0 +1,559 @@
+@@ -0,0 +1,546 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -14423,7 +16486,7 @@ index 0000000..cc083b4
+
+/**
+ * struct kdbus_match_rule - a rule appended to a match entry
-+ * @type: An item type to match agains
++ * @type: An item type to match against
+ * @bloom_mask: Bloom mask to match a message's filter against, used
+ * with KDBUS_ITEM_BLOOM_MASK
+ * @name: Name to match against, used with KDBUS_ITEM_NAME,
@@ -14435,6 +16498,7 @@ index 0000000..cc083b4
+ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE},
+ * KDBUS_ITEM_ID_REMOVE
+ * @src_id: ID to match against, used with KDBUS_ITEM_ID
++ * @dst_id: Message destination ID, used with KDBUS_ITEM_DST_ID
+ * @rules_entry: Entry in the entry's rules list
+ */
+struct kdbus_match_rule {
@@ -14447,6 +16511,7 @@ index 0000000..cc083b4
+ u64 new_id;
+ };
+ u64 src_id;
++ u64 dst_id;
+ };
+ struct list_head rules_entry;
+};
@@ -14469,6 +16534,7 @@ index 0000000..cc083b4
+ break;
+
+ case KDBUS_ITEM_ID:
++ case KDBUS_ITEM_DST_ID:
+ case KDBUS_ITEM_ID_ADD:
+ case KDBUS_ITEM_ID_REMOVE:
+ break;
@@ -14561,96 +16627,74 @@ index 0000000..cc083b4
+ return true;
+}
+
-+static bool kdbus_match_rules(const struct kdbus_match_entry *entry,
-+ struct kdbus_conn *conn_src,
-+ struct kdbus_kmsg *kmsg)
++static bool kdbus_match_rule_conn(const struct kdbus_match_rule *r,
++ struct kdbus_conn *c,
++ const struct kdbus_staging *s)
+{
-+ struct kdbus_match_rule *r;
-+
-+ if (conn_src)
-+ lockdep_assert_held(&conn_src->ep->bus->name_registry->rwlock);
-+
-+ /*
-+ * Walk all the rules and bail out immediately
-+ * if any of them is unsatisfied.
-+ */
-+
-+ list_for_each_entry(r, &entry->rules_list, rules_entry) {
-+ if (conn_src) {
-+ /* messages from userspace */
-+
-+ switch (r->type) {
-+ case KDBUS_ITEM_BLOOM_MASK:
-+ if (!kdbus_match_bloom(kmsg->bloom_filter,
-+ &r->bloom_mask,
-+ conn_src))
-+ return false;
-+ break;
-+
-+ case KDBUS_ITEM_ID:
-+ if (r->src_id != conn_src->id &&
-+ r->src_id != KDBUS_MATCH_ID_ANY)
-+ return false;
-+
-+ break;
-+
-+ case KDBUS_ITEM_NAME:
-+ if (!kdbus_conn_has_name(conn_src, r->name))
-+ return false;
-+
-+ break;
-+
-+ default:
-+ return false;
-+ }
-+ } else {
-+ /* kernel notifications */
-+
-+ if (kmsg->notify_type != r->type)
-+ return false;
-+
-+ switch (r->type) {
-+ case KDBUS_ITEM_ID_ADD:
-+ if (r->new_id != KDBUS_MATCH_ID_ANY &&
-+ r->new_id != kmsg->notify_new_id)
-+ return false;
++ lockdep_assert_held(&c->ep->bus->name_registry->rwlock);
+
-+ break;
++ switch (r->type) {
++ case KDBUS_ITEM_BLOOM_MASK:
++ return kdbus_match_bloom(s->bloom_filter, &r->bloom_mask, c);
++ case KDBUS_ITEM_ID:
++ return r->src_id == c->id || r->src_id == KDBUS_MATCH_ID_ANY;
++ case KDBUS_ITEM_DST_ID:
++ return r->dst_id == s->msg->dst_id ||
++ r->dst_id == KDBUS_MATCH_ID_ANY;
++ case KDBUS_ITEM_NAME:
++ return kdbus_conn_has_name(c, r->name);
++ default:
++ return false;
++ }
++}
+
-+ case KDBUS_ITEM_ID_REMOVE:
-+ if (r->old_id != KDBUS_MATCH_ID_ANY &&
-+ r->old_id != kmsg->notify_old_id)
-+ return false;
++static bool kdbus_match_rule_kernel(const struct kdbus_match_rule *r,
++ const struct kdbus_staging *s)
++{
++ struct kdbus_item *n = s->notify;
+
-+ break;
++ if (WARN_ON(!n) || n->type != r->type)
++ return false;
+
-+ case KDBUS_ITEM_NAME_ADD:
-+ case KDBUS_ITEM_NAME_CHANGE:
-+ case KDBUS_ITEM_NAME_REMOVE:
-+ if ((r->old_id != KDBUS_MATCH_ID_ANY &&
-+ r->old_id != kmsg->notify_old_id) ||
-+ (r->new_id != KDBUS_MATCH_ID_ANY &&
-+ r->new_id != kmsg->notify_new_id) ||
-+ (r->name && kmsg->notify_name &&
-+ strcmp(r->name, kmsg->notify_name) != 0))
-+ return false;
++ switch (r->type) {
++ case KDBUS_ITEM_ID_ADD:
++ return r->new_id == KDBUS_MATCH_ID_ANY ||
++ r->new_id == n->id_change.id;
++ case KDBUS_ITEM_ID_REMOVE:
++ return r->old_id == KDBUS_MATCH_ID_ANY ||
++ r->old_id == n->id_change.id;
++ case KDBUS_ITEM_NAME_ADD:
++ case KDBUS_ITEM_NAME_CHANGE:
++ case KDBUS_ITEM_NAME_REMOVE:
++ return (r->old_id == KDBUS_MATCH_ID_ANY ||
++ r->old_id == n->name_change.old_id.id) &&
++ (r->new_id == KDBUS_MATCH_ID_ANY ||
++ r->new_id == n->name_change.new_id.id) &&
++ (!r->name || !strcmp(r->name, n->name_change.name));
++ default:
++ return false;
++ }
++}
+
-+ break;
++static bool kdbus_match_rules(const struct kdbus_match_entry *entry,
++ struct kdbus_conn *c,
++ const struct kdbus_staging *s)
++{
++ struct kdbus_match_rule *r;
+
-+ default:
-+ return false;
-+ }
-+ }
-+ }
++ list_for_each_entry(r, &entry->rules_list, rules_entry)
++ if ((c && !kdbus_match_rule_conn(r, c, s)) ||
++ (!c && !kdbus_match_rule_kernel(r, s)))
++ return false;
+
+ return true;
+}
+
+/**
-+ * kdbus_match_db_match_kmsg() - match a kmsg object agains the database entries
++ * kdbus_match_db_match_msg() - match a msg object agains the database entries
+ * @mdb: The match database
+ * @conn_src: The connection object originating the message
-+ * @kmsg: The kmsg to perform the match on
++ * @staging: Staging object containing the message to match against
+ *
+ * This function will walk through all the database entries previously uploaded
+ * with kdbus_match_db_add(). As soon as any of them has an all-satisfied rule
@@ -14661,16 +16705,16 @@ index 0000000..cc083b4
+ *
+ * Return: true if there was a matching database entry, false otherwise.
+ */
-+bool kdbus_match_db_match_kmsg(struct kdbus_match_db *mdb,
-+ struct kdbus_conn *conn_src,
-+ struct kdbus_kmsg *kmsg)
++bool kdbus_match_db_match_msg(struct kdbus_match_db *mdb,
++ struct kdbus_conn *conn_src,
++ const struct kdbus_staging *staging)
+{
+ struct kdbus_match_entry *entry;
+ bool matched = false;
+
+ down_read(&mdb->mdb_rwlock);
+ list_for_each_entry(entry, &mdb->entries_list, list_entry) {
-+ matched = kdbus_match_rules(entry, conn_src, kmsg);
++ matched = kdbus_match_rules(entry, conn_src, staging);
+ if (matched)
+ break;
+ }
@@ -14710,6 +16754,7 @@ index 0000000..cc083b4
+ * KDBUS_ITEM_BLOOM_MASK: A bloom mask
+ * KDBUS_ITEM_NAME: A connection's source name
+ * KDBUS_ITEM_ID: A connection ID
++ * KDBUS_ITEM_DST_ID: A connection ID
+ * KDBUS_ITEM_NAME_ADD:
+ * KDBUS_ITEM_NAME_REMOVE:
+ * KDBUS_ITEM_NAME_CHANGE: Well-known name changes, carry
@@ -14721,9 +16766,9 @@ index 0000000..cc083b4
+ * For kdbus_notify_{id,name}_change structs, only the ID and name fields
+ * are looked at when adding an entry. The flags are unused.
+ *
-+ * Also note that KDBUS_ITEM_BLOOM_MASK, KDBUS_ITEM_NAME and KDBUS_ITEM_ID
-+ * are used to match messages from userspace, while the others apply to
-+ * kernel-generated notifications.
++ * Also note that KDBUS_ITEM_BLOOM_MASK, KDBUS_ITEM_NAME, KDBUS_ITEM_ID,
++ * and KDBUS_ITEM_DST_ID are used to match messages from userspace, while the
++ * others apply to kernel-generated notifications.
+ *
+ * Return: >=0 on success, negative error code on failure.
+ */
@@ -14740,6 +16785,7 @@ index 0000000..cc083b4
+ { .type = KDBUS_ITEM_BLOOM_MASK, .multiple = true },
+ { .type = KDBUS_ITEM_NAME, .multiple = true },
+ { .type = KDBUS_ITEM_ID, .multiple = true },
++ { .type = KDBUS_ITEM_DST_ID, .multiple = true },
+ { .type = KDBUS_ITEM_NAME_ADD, .multiple = true },
+ { .type = KDBUS_ITEM_NAME_REMOVE, .multiple = true },
+ { .type = KDBUS_ITEM_NAME_CHANGE, .multiple = true },
@@ -14822,6 +16868,10 @@ index 0000000..cc083b4
+ rule->src_id = item->id;
+ break;
+
++ case KDBUS_ITEM_DST_ID:
++ rule->dst_id = item->id;
++ break;
++
+ case KDBUS_ITEM_NAME_ADD:
+ case KDBUS_ITEM_NAME_REMOVE:
+ case KDBUS_ITEM_NAME_CHANGE:
@@ -14916,7 +16966,7 @@ index 0000000..cc083b4
+}
diff --git a/ipc/kdbus/match.h b/ipc/kdbus/match.h
new file mode 100644
-index 0000000..ea42929
+index 0000000..ceb492f
--- /dev/null
+++ b/ipc/kdbus/match.h
@@ -0,0 +1,35 @@
@@ -14938,8 +16988,8 @@ index 0000000..ea42929
+#define __KDBUS_MATCH_H
+
+struct kdbus_conn;
-+struct kdbus_kmsg;
+struct kdbus_match_db;
++struct kdbus_staging;
+
+struct kdbus_match_db *kdbus_match_db_new(void);
+void kdbus_match_db_free(struct kdbus_match_db *db);
@@ -14947,9 +16997,9 @@ index 0000000..ea42929
+ struct kdbus_cmd_match *cmd);
+int kdbus_match_db_remove(struct kdbus_conn *conn,
+ struct kdbus_cmd_match *cmd);
-+bool kdbus_match_db_match_kmsg(struct kdbus_match_db *db,
-+ struct kdbus_conn *conn_src,
-+ struct kdbus_kmsg *kmsg);
++bool kdbus_match_db_match_msg(struct kdbus_match_db *db,
++ struct kdbus_conn *conn_src,
++ const struct kdbus_staging *staging);
+
+int kdbus_cmd_match_add(struct kdbus_conn *conn, void __user *argp);
+int kdbus_cmd_match_remove(struct kdbus_conn *conn, void __user *argp);
@@ -14957,10 +17007,10 @@ index 0000000..ea42929
+#endif
diff --git a/ipc/kdbus/message.c b/ipc/kdbus/message.c
new file mode 100644
-index 0000000..066e816
+index 0000000..3520f45
--- /dev/null
+++ b/ipc/kdbus/message.c
-@@ -0,0 +1,640 @@
+@@ -0,0 +1,1040 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -15000,613 +17050,1013 @@ index 0000000..066e816
+#include "names.h"
+#include "policy.h"
+
-+#define KDBUS_KMSG_HEADER_SIZE offsetof(struct kdbus_kmsg, msg)
++static const char * const zeros = "\0\0\0\0\0\0\0";
+
-+static struct kdbus_msg_resources *kdbus_msg_resources_new(void)
++static struct kdbus_gaps *kdbus_gaps_new(size_t n_memfds, size_t n_fds)
+{
-+ struct kdbus_msg_resources *r;
++ size_t size_offsets, size_memfds, size_fds, size;
++ struct kdbus_gaps *gaps;
+
-+ r = kzalloc(sizeof(*r), GFP_KERNEL);
-+ if (!r)
++ size_offsets = n_memfds * sizeof(*gaps->memfd_offsets);
++ size_memfds = n_memfds * sizeof(*gaps->memfd_files);
++ size_fds = n_fds * sizeof(*gaps->fd_files);
++ size = sizeof(*gaps) + size_offsets + size_memfds + size_fds;
++
++ gaps = kzalloc(size, GFP_KERNEL);
++ if (!gaps)
+ return ERR_PTR(-ENOMEM);
+
-+ kref_init(&r->kref);
++ kref_init(&gaps->kref);
++ gaps->n_memfds = 0; /* we reserve n_memfds, but don't enforce them */
++ gaps->memfd_offsets = (void *)(gaps + 1);
++ gaps->memfd_files = (void *)((u8 *)gaps->memfd_offsets + size_offsets);
++ gaps->n_fds = 0; /* we reserve n_fds, but don't enforce them */
++ gaps->fd_files = (void *)((u8 *)gaps->memfd_files + size_memfds);
+
-+ return r;
++ return gaps;
+}
+
-+static void __kdbus_msg_resources_free(struct kref *kref)
++static void kdbus_gaps_free(struct kref *kref)
+{
-+ struct kdbus_msg_resources *r =
-+ container_of(kref, struct kdbus_msg_resources, kref);
++ struct kdbus_gaps *gaps = container_of(kref, struct kdbus_gaps, kref);
+ size_t i;
+
-+ for (i = 0; i < r->data_count; ++i) {
-+ switch (r->data[i].type) {
-+ case KDBUS_MSG_DATA_VEC:
-+ /* nothing to do */
-+ break;
-+ case KDBUS_MSG_DATA_MEMFD:
-+ if (r->data[i].memfd.file)
-+ fput(r->data[i].memfd.file);
-+ break;
-+ }
-+ }
-+
-+ for (i = 0; i < r->fds_count; i++)
-+ if (r->fds[i])
-+ fput(r->fds[i]);
++ for (i = 0; i < gaps->n_fds; ++i)
++ if (gaps->fd_files[i])
++ fput(gaps->fd_files[i]);
++ for (i = 0; i < gaps->n_memfds; ++i)
++ if (gaps->memfd_files[i])
++ fput(gaps->memfd_files[i]);
+
-+ kfree(r->dst_name);
-+ kfree(r->data);
-+ kfree(r->fds);
-+ kfree(r);
++ kfree(gaps);
+}
+
+/**
-+ * kdbus_msg_resources_ref() - Acquire reference to msg resources
-+ * @r: resources to acquire ref to
++ * kdbus_gaps_ref() - gain reference
++ * @gaps: gaps object
+ *
-+ * Return: The acquired resource
++ * Return: @gaps is returned
+ */
-+struct kdbus_msg_resources *
-+kdbus_msg_resources_ref(struct kdbus_msg_resources *r)
++struct kdbus_gaps *kdbus_gaps_ref(struct kdbus_gaps *gaps)
+{
-+ if (r)
-+ kref_get(&r->kref);
-+ return r;
++ if (gaps)
++ kref_get(&gaps->kref);
++ return gaps;
+}
+
+/**
-+ * kdbus_msg_resources_unref() - Drop reference to msg resources
-+ * @r: resources to drop reference of
++ * kdbus_gaps_unref() - drop reference
++ * @gaps: gaps object
+ *
+ * Return: NULL
+ */
-+struct kdbus_msg_resources *
-+kdbus_msg_resources_unref(struct kdbus_msg_resources *r)
++struct kdbus_gaps *kdbus_gaps_unref(struct kdbus_gaps *gaps)
+{
-+ if (r)
-+ kref_put(&r->kref, __kdbus_msg_resources_free);
++ if (gaps)
++ kref_put(&gaps->kref, kdbus_gaps_free);
+ return NULL;
+}
+
+/**
-+ * kdbus_kmsg_free() - free allocated message
-+ * @kmsg: Message
++ * kdbus_gaps_install() - install file-descriptors
++ * @gaps: gaps object, or NULL
++ * @slice: pool slice that contains the message
++ * @out_incomplete output variable to note incomplete fds
++ *
++ * This function installs all file-descriptors of @gaps into the current
++ * process and copies the file-descriptor numbers into the target pool slice.
++ *
++ * If the file-descriptors were only partially installed, then @out_incomplete
++ * will be set to true. Otherwise, it's set to false.
++ *
++ * Return: 0 on success, negative error code on failure
+ */
-+void kdbus_kmsg_free(struct kdbus_kmsg *kmsg)
++int kdbus_gaps_install(struct kdbus_gaps *gaps, struct kdbus_pool_slice *slice,
++ bool *out_incomplete)
+{
-+ if (!kmsg)
-+ return;
++ bool incomplete_fds = false;
++ struct kvec kvec;
++ size_t i, n_fds;
++ int ret, *fds;
+
-+ kdbus_msg_resources_unref(kmsg->res);
-+ kdbus_meta_conn_unref(kmsg->conn_meta);
-+ kdbus_meta_proc_unref(kmsg->proc_meta);
-+ kfree(kmsg->iov);
-+ kfree(kmsg);
-+}
++ if (!gaps) {
++ /* nothing to do */
++ *out_incomplete = incomplete_fds;
++ return 0;
++ }
+
-+/**
-+ * kdbus_kmsg_new() - allocate message
-+ * @bus: Bus this message is allocated on
-+ * @extra_size: Additional size to reserve for data
-+ *
-+ * Return: new kdbus_kmsg on success, ERR_PTR on failure.
-+ */
-+struct kdbus_kmsg *kdbus_kmsg_new(struct kdbus_bus *bus, size_t extra_size)
-+{
-+ struct kdbus_kmsg *m;
-+ size_t size;
-+ int ret;
++ n_fds = gaps->n_fds + gaps->n_memfds;
++ if (n_fds < 1) {
++ /* nothing to do */
++ *out_incomplete = incomplete_fds;
++ return 0;
++ }
+
-+ size = sizeof(struct kdbus_kmsg) + KDBUS_ITEM_SIZE(extra_size);
-+ m = kzalloc(size, GFP_KERNEL);
-+ if (!m)
-+ return ERR_PTR(-ENOMEM);
++ fds = kmalloc_array(n_fds, sizeof(*fds), GFP_TEMPORARY);
++ n_fds = 0;
++ if (!fds)
++ return -ENOMEM;
+
-+ m->seq = atomic64_inc_return(&bus->domain->last_id);
-+ m->msg.size = size - KDBUS_KMSG_HEADER_SIZE;
-+ m->msg.items[0].size = KDBUS_ITEM_SIZE(extra_size);
++ /* 1) allocate fds and copy them over */
+
-+ m->proc_meta = kdbus_meta_proc_new();
-+ if (IS_ERR(m->proc_meta)) {
-+ ret = PTR_ERR(m->proc_meta);
-+ m->proc_meta = NULL;
-+ goto exit;
++ if (gaps->n_fds > 0) {
++ for (i = 0; i < gaps->n_fds; ++i) {
++ int fd;
++
++ fd = get_unused_fd_flags(O_CLOEXEC);
++ if (fd < 0)
++ incomplete_fds = true;
++
++ WARN_ON(!gaps->fd_files[i]);
++
++ fds[n_fds++] = fd < 0 ? -1 : fd;
++ }
++
++ /*
++ * The file-descriptor array can only be present once per
++ * message. Hence, prepare all fds and then copy them over with
++ * a single kvec.
++ */
++
++ WARN_ON(!gaps->fd_offset);
++
++ kvec.iov_base = fds;
++ kvec.iov_len = gaps->n_fds * sizeof(*fds);
++ ret = kdbus_pool_slice_copy_kvec(slice, gaps->fd_offset,
++ &kvec, 1, kvec.iov_len);
++ if (ret < 0)
++ goto exit;
+ }
+
-+ m->conn_meta = kdbus_meta_conn_new();
-+ if (IS_ERR(m->conn_meta)) {
-+ ret = PTR_ERR(m->conn_meta);
-+ m->conn_meta = NULL;
-+ goto exit;
++ for (i = 0; i < gaps->n_memfds; ++i) {
++ int memfd;
++
++ memfd = get_unused_fd_flags(O_CLOEXEC);
++ if (memfd < 0) {
++ incomplete_fds = true;
++ /* memfds are initialized to -1, skip copying it */
++ continue;
++ }
++
++ fds[n_fds++] = memfd;
++
++ /*
++ * memfds have to be copied individually as they each are put
++ * into a separate item. This should not be an issue, though,
++ * as usually there is no need to send more than one memfd per
++ * message.
++ */
++
++ WARN_ON(!gaps->memfd_offsets[i]);
++ WARN_ON(!gaps->memfd_files[i]);
++
++ kvec.iov_base = &memfd;
++ kvec.iov_len = sizeof(memfd);
++ ret = kdbus_pool_slice_copy_kvec(slice, gaps->memfd_offsets[i],
++ &kvec, 1, kvec.iov_len);
++ if (ret < 0)
++ goto exit;
+ }
+
-+ return m;
++ /* 2) install fds now that everything was successful */
++
++ for (i = 0; i < gaps->n_fds; ++i)
++ if (fds[i] >= 0)
++ fd_install(fds[i], get_file(gaps->fd_files[i]));
++ for (i = 0; i < gaps->n_memfds; ++i)
++ if (fds[gaps->n_fds + i] >= 0)
++ fd_install(fds[gaps->n_fds + i],
++ get_file(gaps->memfd_files[i]));
++
++ ret = 0;
+
+exit:
-+ kdbus_kmsg_free(m);
-+ return ERR_PTR(ret);
++ if (ret < 0)
++ for (i = 0; i < n_fds; ++i)
++ put_unused_fd(fds[i]);
++ kfree(fds);
++ *out_incomplete = incomplete_fds;
++ return ret;
+}
+
-+static int kdbus_handle_check_file(struct file *file)
++static struct file *kdbus_get_fd(int fd)
+{
-+ struct inode *inode = file_inode(file);
++ struct file *f, *ret;
++ struct inode *inode;
+ struct socket *sock;
+
-+ /*
-+ * Don't allow file descriptors in the transport that themselves allow
-+ * file descriptor queueing. This will eventually be allowed once both
-+ * unix domain sockets and kdbus share a generic garbage collector.
-+ */
++ if (fd < 0)
++ return ERR_PTR(-EBADF);
+
-+ if (file->f_op == &kdbus_handle_ops)
-+ return -EOPNOTSUPP;
++ f = fget_raw(fd);
++ if (!f)
++ return ERR_PTR(-EBADF);
+
-+ if (!S_ISSOCK(inode->i_mode))
-+ return 0;
++ inode = file_inode(f);
++ sock = S_ISSOCK(inode->i_mode) ? SOCKET_I(inode) : NULL;
+
-+ if (file->f_mode & FMODE_PATH)
-+ return 0;
++ if (f->f_mode & FMODE_PATH)
++ ret = f; /* O_PATH is always allowed */
++ else if (f->f_op == &kdbus_handle_ops)
++ ret = ERR_PTR(-EOPNOTSUPP); /* disallow kdbus-fd over kdbus */
++ else if (sock && sock->sk && sock->ops && sock->ops->family == PF_UNIX)
++ ret = ERR_PTR(-EOPNOTSUPP); /* disallow UDS over kdbus */
++ else
++ ret = f; /* all other are allowed */
+
-+ sock = SOCKET_I(inode);
-+ if (sock->sk && sock->ops && sock->ops->family == PF_UNIX)
-+ return -EOPNOTSUPP;
++ if (f != ret)
++ fput(f);
+
-+ return 0;
++ return ret;
+}
+
-+static const char * const zeros = "\0\0\0\0\0\0\0";
++static struct file *kdbus_get_memfd(const struct kdbus_memfd *memfd)
++{
++ const int m = F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL;
++ struct file *f, *ret;
++ int s;
+
-+/*
-+ * kdbus_msg_scan_items() - validate incoming data and prepare parsing
-+ * @kmsg: Message
-+ * @bus: Bus the message is sent over
-+ *
-+ * Return: 0 on success, negative errno on failure.
-+ *
-+ * Files references in MEMFD or FDS items are pinned.
-+ *
-+ * On errors, the caller should drop any taken reference with
-+ * kdbus_kmsg_free()
-+ */
-+static int kdbus_msg_scan_items(struct kdbus_kmsg *kmsg,
-+ struct kdbus_bus *bus)
++ if (memfd->fd < 0)
++ return ERR_PTR(-EBADF);
++
++ f = fget(memfd->fd);
++ if (!f)
++ return ERR_PTR(-EBADF);
++
++ s = shmem_get_seals(f);
++ if (s < 0)
++ ret = ERR_PTR(-EMEDIUMTYPE);
++ else if ((s & m) != m)
++ ret = ERR_PTR(-ETXTBSY);
++ else if (memfd->start + memfd->size > (u64)i_size_read(file_inode(f)))
++ ret = ERR_PTR(-EFAULT);
++ else
++ ret = f;
++
++ if (f != ret)
++ fput(f);
++
++ return ret;
++}
++
++static int kdbus_msg_examine(struct kdbus_msg *msg, struct kdbus_bus *bus,
++ struct kdbus_cmd_send *cmd, size_t *out_n_memfds,
++ size_t *out_n_fds, size_t *out_n_parts)
+{
-+ struct kdbus_msg_resources *res = kmsg->res;
-+ const struct kdbus_msg *msg = &kmsg->msg;
-+ const struct kdbus_item *item;
-+ size_t n, n_vecs, n_memfds;
-+ bool has_bloom = false;
-+ bool has_name = false;
-+ bool has_fds = false;
-+ bool is_broadcast;
-+ bool is_signal;
-+ u64 vec_size;
-+
-+ is_broadcast = (msg->dst_id == KDBUS_DST_ID_BROADCAST);
-+ is_signal = !!(msg->flags & KDBUS_MSG_SIGNAL);
-+
-+ /* count data payloads */
-+ n_vecs = 0;
-+ n_memfds = 0;
-+ KDBUS_ITEMS_FOREACH(item, msg->items, KDBUS_ITEMS_SIZE(msg, items)) {
-+ switch (item->type) {
-+ case KDBUS_ITEM_PAYLOAD_VEC:
-+ ++n_vecs;
-+ break;
-+ case KDBUS_ITEM_PAYLOAD_MEMFD:
-+ ++n_memfds;
-+ if (item->memfd.size % 8)
-+ ++n_vecs;
-+ break;
-+ default:
-+ break;
-+ }
-+ }
++ struct kdbus_item *item, *fds = NULL, *bloom = NULL, *dstname = NULL;
++ u64 n_parts, n_memfds, n_fds, vec_size;
+
-+ n = n_vecs + n_memfds;
-+ if (n > 0) {
-+ res->data = kcalloc(n, sizeof(*res->data), GFP_KERNEL);
-+ if (!res->data)
-+ return -ENOMEM;
++ /*
++ * Step 1:
++ * Validate the message and command parameters.
++ */
++
++ /* KDBUS_PAYLOAD_KERNEL is reserved to kernel messages */
++ if (msg->payload_type == KDBUS_PAYLOAD_KERNEL)
++ return -EINVAL;
++
++ if (msg->dst_id == KDBUS_DST_ID_BROADCAST) {
++ /* broadcasts must be marked as signals */
++ if (!(msg->flags & KDBUS_MSG_SIGNAL))
++ return -EBADMSG;
++ /* broadcasts cannot have timeouts */
++ if (msg->timeout_ns > 0)
++ return -ENOTUNIQ;
+ }
+
-+ if (n_vecs > 0) {
-+ kmsg->iov = kcalloc(n_vecs, sizeof(*kmsg->iov), GFP_KERNEL);
-+ if (!kmsg->iov)
-+ return -ENOMEM;
++ if (msg->flags & KDBUS_MSG_EXPECT_REPLY) {
++ /* if you expect a reply, you must specify a timeout */
++ if (msg->timeout_ns == 0)
++ return -EINVAL;
++ /* signals cannot have replies */
++ if (msg->flags & KDBUS_MSG_SIGNAL)
++ return -ENOTUNIQ;
++ } else {
++ /* must expect reply if sent as synchronous call */
++ if (cmd->flags & KDBUS_SEND_SYNC_REPLY)
++ return -EINVAL;
++ /* cannot mark replies as signal */
++ if (msg->cookie_reply && (msg->flags & KDBUS_MSG_SIGNAL))
++ return -EINVAL;
+ }
+
-+ /* import data payloads */
-+ n = 0;
-+ vec_size = 0;
-+ KDBUS_ITEMS_FOREACH(item, msg->items, KDBUS_ITEMS_SIZE(msg, items)) {
-+ size_t payload_size = KDBUS_ITEM_PAYLOAD_SIZE(item);
-+ struct iovec *iov = kmsg->iov + kmsg->iov_count;
++ /*
++ * Step 2:
++ * Validate all passed items. While at it, select some statistics that
++ * are required to allocate state objects later on.
++ *
++ * Generic item validation has already been done via
++ * kdbus_item_validate(). Furthermore, the number of items is naturally
++ * limited by the maximum message size. Hence, only non-generic item
++ * checks are performed here (mainly integer overflow tests).
++ */
+
-+ if (++n > KDBUS_MSG_MAX_ITEMS)
-+ return -E2BIG;
++ n_parts = 0;
++ n_memfds = 0;
++ n_fds = 0;
++ vec_size = 0;
+
++ KDBUS_ITEMS_FOREACH(item, msg->items, KDBUS_ITEMS_SIZE(msg, items)) {
+ switch (item->type) {
+ case KDBUS_ITEM_PAYLOAD_VEC: {
-+ struct kdbus_msg_data *d = res->data + res->data_count;
+ void __force __user *ptr = KDBUS_PTR(item->vec.address);
-+ size_t size = item->vec.size;
++ u64 size = item->vec.size;
+
+ if (vec_size + size < vec_size)
+ return -EMSGSIZE;
+ if (vec_size + size > KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE)
+ return -EMSGSIZE;
++ if (ptr && unlikely(!access_ok(VERIFY_READ, ptr, size)))
++ return -EFAULT;
+
-+ d->type = KDBUS_MSG_DATA_VEC;
-+ d->size = size;
-+
-+ if (ptr) {
-+ if (unlikely(!access_ok(VERIFY_READ, ptr,
-+ size)))
-+ return -EFAULT;
-+
-+ d->vec.off = kmsg->pool_size;
-+ iov->iov_base = ptr;
-+ iov->iov_len = size;
-+ } else {
-+ d->vec.off = ~0ULL;
-+ iov->iov_base = (char __user *)zeros;
-+ iov->iov_len = size % 8;
-+ }
-+
-+ if (kmsg->pool_size + iov->iov_len < kmsg->pool_size)
-+ return -EMSGSIZE;
-+
-+ kmsg->pool_size += iov->iov_len;
-+ ++kmsg->iov_count;
-+ ++res->vec_count;
-+ ++res->data_count;
-+ vec_size += size;
-+
++ if (ptr || size % 8) /* data or padding */
++ ++n_parts;
+ break;
+ }
-+
+ case KDBUS_ITEM_PAYLOAD_MEMFD: {
-+ struct kdbus_msg_data *d = res->data + res->data_count;
+ u64 start = item->memfd.start;
+ u64 size = item->memfd.size;
-+ size_t pad = size % 8;
-+ int seals, mask;
-+ struct file *f;
+
-+ if (kmsg->pool_size + size % 8 < kmsg->pool_size)
-+ return -EMSGSIZE;
+ if (start + size < start)
+ return -EMSGSIZE;
-+
-+ if (item->memfd.fd < 0)
-+ return -EBADF;
-+
-+ if (res->memfd_count >= KDBUS_MSG_MAX_MEMFD_ITEMS)
++ if (n_memfds >= KDBUS_MSG_MAX_MEMFD_ITEMS)
+ return -E2BIG;
+
-+ f = fget(item->memfd.fd);
-+ if (!f)
-+ return -EBADF;
-+
-+ if (pad) {
-+ iov->iov_base = (char __user *)zeros;
-+ iov->iov_len = pad;
++ ++n_memfds;
++ if (size % 8) /* vec-padding required */
++ ++n_parts;
++ break;
++ }
++ case KDBUS_ITEM_FDS: {
++ if (fds)
++ return -EEXIST;
+
-+ kmsg->pool_size += pad;
-+ ++kmsg->iov_count;
-+ }
++ fds = item;
++ n_fds = KDBUS_ITEM_PAYLOAD_SIZE(item) / sizeof(int);
++ if (n_fds > KDBUS_CONN_MAX_FDS_PER_USER)
++ return -EMFILE;
+
-+ ++res->data_count;
-+ ++res->memfd_count;
++ break;
++ }
++ case KDBUS_ITEM_BLOOM_FILTER: {
++ u64 bloom_size;
+
-+ d->type = KDBUS_MSG_DATA_MEMFD;
-+ d->size = size;
-+ d->memfd.start = start;
-+ d->memfd.file = f;
++ if (bloom)
++ return -EEXIST;
+
-+ /*
-+ * We only accept a sealed memfd file whose content
-+ * cannot be altered by the sender or anybody else
-+ * while it is shared or in-flight. Other files need
-+ * to be passed with KDBUS_MSG_FDS.
-+ */
-+ seals = shmem_get_seals(f);
-+ if (seals < 0)
-+ return -EMEDIUMTYPE;
++ bloom = item;
++ bloom_size = KDBUS_ITEM_PAYLOAD_SIZE(item) -
++ offsetof(struct kdbus_bloom_filter, data);
++ if (!KDBUS_IS_ALIGNED8(bloom_size))
++ return -EFAULT;
++ if (bloom_size != bus->bloom.size)
++ return -EDOM;
+
-+ mask = F_SEAL_SHRINK | F_SEAL_GROW |
-+ F_SEAL_WRITE | F_SEAL_SEAL;
-+ if ((seals & mask) != mask)
-+ return -ETXTBSY;
++ break;
++ }
++ case KDBUS_ITEM_DST_NAME: {
++ if (dstname)
++ return -EEXIST;
+
-+ if (start + size > (u64)i_size_read(file_inode(f)))
-+ return -EBADF;
++ dstname = item;
++ if (!kdbus_name_is_valid(item->str, false))
++ return -EINVAL;
++ if (msg->dst_id == KDBUS_DST_ID_BROADCAST)
++ return -EBADMSG;
+
+ break;
+ }
++ default:
++ return -EINVAL;
++ }
++ }
+
-+ case KDBUS_ITEM_FDS: {
-+ unsigned int i;
-+ unsigned int fds_count = payload_size / sizeof(int);
++ /*
++ * Step 3:
++ * Validate that required items were actually passed, and that no item
++ * contradicts the message flags.
++ */
+
-+ /* do not allow multiple fd arrays */
-+ if (has_fds)
-+ return -EEXIST;
-+ has_fds = true;
++ /* bloom filters must be attached _iff_ it's a signal */
++ if (!(msg->flags & KDBUS_MSG_SIGNAL) != !bloom)
++ return -EBADMSG;
++ /* destination name is required if no ID is given */
++ if (msg->dst_id == KDBUS_DST_ID_NAME && !dstname)
++ return -EDESTADDRREQ;
++ /* cannot send file-descriptors attached to broadcasts */
++ if (msg->dst_id == KDBUS_DST_ID_BROADCAST && fds)
++ return -ENOTUNIQ;
+
-+ /* Do not allow to broadcast file descriptors */
-+ if (is_broadcast)
-+ return -ENOTUNIQ;
++ *out_n_memfds = n_memfds;
++ *out_n_fds = n_fds;
++ *out_n_parts = n_parts;
+
-+ if (fds_count > KDBUS_CONN_MAX_FDS_PER_USER)
-+ return -EMFILE;
++ return 0;
++}
+
-+ res->fds = kcalloc(fds_count, sizeof(struct file *),
-+ GFP_KERNEL);
-+ if (!res->fds)
-+ return -ENOMEM;
++static bool kdbus_staging_merge_vecs(struct kdbus_staging *staging,
++ struct kdbus_item **prev_item,
++ struct iovec **prev_vec,
++ const struct kdbus_item *merge)
++{
++ void __user *ptr = (void __user *)KDBUS_PTR(merge->vec.address);
++ u64 padding = merge->vec.size % 8;
++ struct kdbus_item *prev = *prev_item;
++ struct iovec *vec = *prev_vec;
+
-+ for (i = 0; i < fds_count; i++) {
-+ int fd = item->fds[i];
-+ int ret;
++ /* XXX: merging is disabled so far */
++ if (0 && prev && prev->type == KDBUS_ITEM_PAYLOAD_OFF &&
++ !merge->vec.address == !prev->vec.address) {
++ /*
++ * If we merge two VECs, we can always drop the second
++ * PAYLOAD_VEC item. Hence, include its size in the previous
++ * one.
++ */
++ prev->vec.size += merge->vec.size;
+
-+ /*
-+ * Verify the fd and increment the usage count.
-+ * Use fget_raw() to allow passing O_PATH fds.
-+ */
-+ if (fd < 0)
-+ return -EBADF;
++ if (ptr) {
++ /*
++ * If we merge two data VECs, we need two iovecs to copy
++ * the data. But the items can be easily merged by
++ * summing their lengths.
++ */
++ vec = &staging->parts[staging->n_parts++];
++ vec->iov_len = merge->vec.size;
++ vec->iov_base = ptr;
++ staging->n_payload += vec->iov_len;
++ } else if (padding) {
++ /*
++ * If we merge two 0-vecs with the second 0-vec
++ * requiring padding, we need to insert an iovec to copy
++ * the 0-padding. We try merging it with the previous
++ * 0-padding iovec. This might end up with an
++ * iov_len==0, in which case we simply drop the iovec.
++ */
++ if (vec) {
++ staging->n_payload -= vec->iov_len;
++ vec->iov_len = prev->vec.size % 8;
++ if (!vec->iov_len) {
++ --staging->n_parts;
++ vec = NULL;
++ } else {
++ staging->n_payload += vec->iov_len;
++ }
++ } else {
++ vec = &staging->parts[staging->n_parts++];
++ vec->iov_len = padding;
++ vec->iov_base = (char __user *)zeros;
++ staging->n_payload += vec->iov_len;
++ }
++ } else {
++ /*
++ * If we merge two 0-vecs with the second 0-vec having
++ * no padding, we know the padding of the first stays
++ * the same. Hence, @vec needs no adjustment.
++ */
++ }
++
++ /* successfully merged with previous item */
++ merge = prev;
++ } else {
++ /*
++ * If we cannot merge the payload item with the previous one,
++ * we simply insert a new iovec for the data/padding.
++ */
++ if (ptr) {
++ vec = &staging->parts[staging->n_parts++];
++ vec->iov_len = merge->vec.size;
++ vec->iov_base = ptr;
++ staging->n_payload += vec->iov_len;
++ } else if (padding) {
++ vec = &staging->parts[staging->n_parts++];
++ vec->iov_len = padding;
++ vec->iov_base = (char __user *)zeros;
++ staging->n_payload += vec->iov_len;
++ } else {
++ vec = NULL;
++ }
++ }
+
-+ res->fds[i] = fget_raw(fd);
-+ if (!res->fds[i])
-+ return -EBADF;
++ *prev_item = (struct kdbus_item *)merge;
++ *prev_vec = vec;
+
-+ res->fds_count++;
++ return merge == prev;
++}
+
-+ ret = kdbus_handle_check_file(res->fds[i]);
-+ if (ret < 0)
-+ return ret;
++static int kdbus_staging_import(struct kdbus_staging *staging)
++{
++ struct kdbus_item *it, *item, *last, *prev_payload;
++ struct kdbus_gaps *gaps = staging->gaps;
++ struct kdbus_msg *msg = staging->msg;
++ struct iovec *part, *prev_part;
++ bool drop_item;
++
++ drop_item = false;
++ last = NULL;
++ prev_payload = NULL;
++ prev_part = NULL;
++
++ /*
++ * We modify msg->items along the way; make sure to use @item as offset
++ * to the next item (instead of the iterator @it).
++ */
++ for (it = item = msg->items;
++ it >= msg->items &&
++ (u8 *)it < (u8 *)msg + msg->size &&
++ (u8 *)it + it->size <= (u8 *)msg + msg->size; ) {
++ /*
++ * If we dropped items along the way, move current item to
++ * front. We must not access @it afterwards, but use @item
++ * instead!
++ */
++ if (it != item)
++ memmove(item, it, it->size);
++ it = (void *)((u8 *)it + KDBUS_ALIGN8(item->size));
++
++ switch (item->type) {
++ case KDBUS_ITEM_PAYLOAD_VEC: {
++ size_t offset = staging->n_payload;
++
++ if (kdbus_staging_merge_vecs(staging, &prev_payload,
++ &prev_part, item)) {
++ drop_item = true;
++ } else if (item->vec.address) {
++ /* real offset is patched later on */
++ item->type = KDBUS_ITEM_PAYLOAD_OFF;
++ item->vec.offset = offset;
++ } else {
++ item->type = KDBUS_ITEM_PAYLOAD_OFF;
++ item->vec.offset = ~0ULL;
+ }
+
+ break;
+ }
++ case KDBUS_ITEM_PAYLOAD_MEMFD: {
++ struct file *f;
+
-+ case KDBUS_ITEM_BLOOM_FILTER: {
-+ u64 bloom_size;
++ f = kdbus_get_memfd(&item->memfd);
++ if (IS_ERR(f))
++ return PTR_ERR(f);
++
++ gaps->memfd_files[gaps->n_memfds] = f;
++ gaps->memfd_offsets[gaps->n_memfds] =
++ (u8 *)&item->memfd.fd - (u8 *)msg;
++ ++gaps->n_memfds;
++
++ /* memfds cannot be merged */
++ prev_payload = item;
++ prev_part = NULL;
++
++ /* insert padding to make following VECs aligned */
++ if (item->memfd.size % 8) {
++ part = &staging->parts[staging->n_parts++];
++ part->iov_len = item->memfd.size % 8;
++ part->iov_base = (char __user *)zeros;
++ staging->n_payload += part->iov_len;
++ }
+
-+ /* do not allow multiple bloom filters */
-+ if (has_bloom)
-+ return -EEXIST;
-+ has_bloom = true;
++ break;
++ }
++ case KDBUS_ITEM_FDS: {
++ size_t i, n_fds;
+
-+ bloom_size = payload_size -
-+ offsetof(struct kdbus_bloom_filter, data);
++ n_fds = KDBUS_ITEM_PAYLOAD_SIZE(item) / sizeof(int);
++ for (i = 0; i < n_fds; ++i) {
++ struct file *f;
+
-+ /*
-+ * Allow only bloom filter sizes of a multiple of 64bit.
-+ */
-+ if (!KDBUS_IS_ALIGNED8(bloom_size))
-+ return -EFAULT;
++ f = kdbus_get_fd(item->fds[i]);
++ if (IS_ERR(f))
++ return PTR_ERR(f);
+
-+ /* do not allow mismatching bloom filter sizes */
-+ if (bloom_size != bus->bloom.size)
-+ return -EDOM;
++ gaps->fd_files[gaps->n_fds++] = f;
++ }
++
++ gaps->fd_offset = (u8 *)item->fds - (u8 *)msg;
+
-+ kmsg->bloom_filter = &item->bloom_filter;
+ break;
+ }
-+
++ case KDBUS_ITEM_BLOOM_FILTER:
++ staging->bloom_filter = &item->bloom_filter;
++ break;
+ case KDBUS_ITEM_DST_NAME:
-+ /* do not allow multiple names */
-+ if (has_name)
-+ return -EEXIST;
-+ has_name = true;
-+
-+ if (!kdbus_name_is_valid(item->str, false))
-+ return -EINVAL;
-+
-+ res->dst_name = kstrdup(item->str, GFP_KERNEL);
-+ if (!res->dst_name)
-+ return -ENOMEM;
++ staging->dst_name = item->str;
+ break;
++ }
+
-+ default:
-+ return -EINVAL;
++ /* drop item if we merged it with a previous one */
++ if (drop_item) {
++ drop_item = false;
++ } else {
++ last = item;
++ item = KDBUS_ITEM_NEXT(item);
+ }
+ }
+
-+ /* name is needed if no ID is given */
-+ if (msg->dst_id == KDBUS_DST_ID_NAME && !has_name)
-+ return -EDESTADDRREQ;
++ /* adjust message size regarding dropped items */
++ msg->size = offsetof(struct kdbus_msg, items);
++ if (last)
++ msg->size += ((u8 *)last - (u8 *)msg->items) + last->size;
+
-+ if (is_broadcast) {
-+ /* Broadcasts can't take names */
-+ if (has_name)
-+ return -EBADMSG;
++ return 0;
++}
+
-+ /* All broadcasts have to be signals */
-+ if (!is_signal)
-+ return -EBADMSG;
++static void kdbus_staging_reserve(struct kdbus_staging *staging)
++{
++ struct iovec *part;
+
-+ /* Timeouts are not allowed for broadcasts */
-+ if (msg->timeout_ns > 0)
-+ return -ENOTUNIQ;
++ part = &staging->parts[staging->n_parts++];
++ part->iov_base = (void __user *)zeros;
++ part->iov_len = 0;
++}
++
++static struct kdbus_staging *kdbus_staging_new(struct kdbus_bus *bus,
++ size_t n_parts,
++ size_t msg_extra_size)
++{
++ const size_t reserved_parts = 5; /* see below for explanation */
++ struct kdbus_staging *staging;
++ int ret;
++
++ n_parts += reserved_parts;
++
++ staging = kzalloc(sizeof(*staging) + n_parts * sizeof(*staging->parts) +
++ msg_extra_size, GFP_TEMPORARY);
++ if (!staging)
++ return ERR_PTR(-ENOMEM);
++
++ staging->msg_seqnum = atomic64_inc_return(&bus->domain->last_id);
++ staging->n_parts = 0; /* we reserve n_parts, but don't enforce them */
++ staging->parts = (void *)(staging + 1);
++
++ if (msg_extra_size) /* if requested, allocate message, too */
++ staging->msg = (void *)((u8 *)staging->parts +
++ n_parts * sizeof(*staging->parts));
++
++ staging->meta_proc = kdbus_meta_proc_new();
++ if (IS_ERR(staging->meta_proc)) {
++ ret = PTR_ERR(staging->meta_proc);
++ staging->meta_proc = NULL;
++ goto error;
++ }
++
++ staging->meta_conn = kdbus_meta_conn_new();
++ if (IS_ERR(staging->meta_conn)) {
++ ret = PTR_ERR(staging->meta_conn);
++ staging->meta_conn = NULL;
++ goto error;
+ }
+
+ /*
-+ * Signal messages require a bloom filter, and bloom filters are
-+ * only valid with signals.
++ * Prepare iovecs to copy the message into the target pool. We use the
++ * following iovecs:
++ * * iovec to copy "kdbus_msg.size"
++ * * iovec to copy "struct kdbus_msg" (minus size) plus items
++ * * iovec for possible padding after the items
++ * * iovec for metadata items
++ * * iovec for possible padding after the items
++ *
++ * Make sure to update @reserved_parts if you add more parts here.
+ */
-+ if (is_signal ^ has_bloom)
-+ return -EBADMSG;
+
-+ return 0;
++ kdbus_staging_reserve(staging); /* msg.size */
++ kdbus_staging_reserve(staging); /* msg (minus msg.size) plus items */
++ kdbus_staging_reserve(staging); /* msg padding */
++ kdbus_staging_reserve(staging); /* meta */
++ kdbus_staging_reserve(staging); /* meta padding */
++
++ return staging;
++
++error:
++ kdbus_staging_free(staging);
++ return ERR_PTR(ret);
+}
+
-+/**
-+ * kdbus_kmsg_new_from_cmd() - create kernel message from send payload
-+ * @conn: Connection
-+ * @cmd_send: Payload of KDBUS_CMD_SEND
-+ *
-+ * Return: a new kdbus_kmsg on success, ERR_PTR on failure.
-+ */
-+struct kdbus_kmsg *kdbus_kmsg_new_from_cmd(struct kdbus_conn *conn,
-+ struct kdbus_cmd_send *cmd_send)
++struct kdbus_staging *kdbus_staging_new_kernel(struct kdbus_bus *bus,
++ u64 dst, u64 cookie_timeout,
++ size_t it_size, size_t it_type)
+{
-+ struct kdbus_kmsg *m;
-+ u64 size;
++ struct kdbus_staging *staging;
++ size_t size;
++
++ size = offsetof(struct kdbus_msg, items) +
++ KDBUS_ITEM_HEADER_SIZE + it_size;
++
++ staging = kdbus_staging_new(bus, 0, KDBUS_ALIGN8(size));
++ if (IS_ERR(staging))
++ return ERR_CAST(staging);
++
++ staging->msg->size = size;
++ staging->msg->flags = (dst == KDBUS_DST_ID_BROADCAST) ?
++ KDBUS_MSG_SIGNAL : 0;
++ staging->msg->dst_id = dst;
++ staging->msg->src_id = KDBUS_SRC_ID_KERNEL;
++ staging->msg->payload_type = KDBUS_PAYLOAD_KERNEL;
++ staging->msg->cookie_reply = cookie_timeout;
++ staging->notify = staging->msg->items;
++ staging->notify->size = KDBUS_ITEM_HEADER_SIZE + it_size;
++ staging->notify->type = it_type;
++
++ return staging;
++}
++
++struct kdbus_staging *kdbus_staging_new_user(struct kdbus_bus *bus,
++ struct kdbus_cmd_send *cmd,
++ struct kdbus_msg *msg)
++{
++ const size_t reserved_parts = 1; /* see below for explanation */
++ size_t n_memfds, n_fds, n_parts;
++ struct kdbus_staging *staging;
+ int ret;
+
-+ ret = kdbus_copy_from_user(&size, KDBUS_PTR(cmd_send->msg_address),
-+ sizeof(size));
++ /*
++ * Examine user-supplied message and figure out how many resources we
++ * need to allocate in our staging area. This requires us to iterate
++ * the message twice, but saves us from re-allocating our resources
++ * all the time.
++ */
++
++ ret = kdbus_msg_examine(msg, bus, cmd, &n_memfds, &n_fds, &n_parts);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
-+ if (size < sizeof(struct kdbus_msg) || size > KDBUS_MSG_MAX_SIZE)
-+ return ERR_PTR(-EINVAL);
++ n_parts += reserved_parts;
+
-+ m = kmalloc(size + KDBUS_KMSG_HEADER_SIZE, GFP_KERNEL);
-+ if (!m)
-+ return ERR_PTR(-ENOMEM);
++ /*
++ * Allocate staging area with the number of required resources. Make
++ * sure that we have enough iovecs for all required parts pre-allocated
++ * so this will hopefully be the only memory allocation for this
++ * message transaction.
++ */
+
-+ memset(m, 0, KDBUS_KMSG_HEADER_SIZE);
-+ m->seq = atomic64_inc_return(&conn->ep->bus->domain->last_id);
++ staging = kdbus_staging_new(bus, n_parts, 0);
++ if (IS_ERR(staging))
++ return ERR_CAST(staging);
+
-+ m->proc_meta = kdbus_meta_proc_new();
-+ if (IS_ERR(m->proc_meta)) {
-+ ret = PTR_ERR(m->proc_meta);
-+ m->proc_meta = NULL;
-+ goto exit_free;
-+ }
++ staging->msg = msg;
+
-+ m->conn_meta = kdbus_meta_conn_new();
-+ if (IS_ERR(m->conn_meta)) {
-+ ret = PTR_ERR(m->conn_meta);
-+ m->conn_meta = NULL;
-+ goto exit_free;
-+ }
++ /*
++ * If the message contains memfds or fd items, we need to remember some
++ * state so we can fill in the requested information at RECV time.
++ * File-descriptors cannot be passed at SEND time. Hence, allocate a
++ * gaps-object to remember that state. That gaps object is linked to
++ * from the staging area, but will also be linked to from the message
++ * queue of each peer. Hence, each receiver owns a reference to it, and
++ * it will later be used to fill the 'gaps' in message that couldn't be
++ * filled at SEND time.
++ * Note that the 'gaps' object is read-only once the staging-allocator
++ * returns. There might be connections receiving a queued message while
++ * the sender still broadcasts the message to other receivers.
++ */
+
-+ if (copy_from_user(&m->msg, KDBUS_PTR(cmd_send->msg_address), size)) {
-+ ret = -EFAULT;
-+ goto exit_free;
++ if (n_memfds > 0 || n_fds > 0) {
++ staging->gaps = kdbus_gaps_new(n_memfds, n_fds);
++ if (IS_ERR(staging->gaps)) {
++ ret = PTR_ERR(staging->gaps);
++ staging->gaps = NULL;
++ kdbus_staging_free(staging);
++ return ERR_PTR(ret);
++ }
+ }
+
-+ if (m->msg.size != size) {
-+ ret = -EINVAL;
-+ goto exit_free;
-+ }
++ /*
++ * kdbus_staging_new() already reserves parts for message setup. For
++ * user-supplied messages, we add the following iovecs:
++ * ... variable number of iovecs for payload ...
++ * * final iovec for possible padding of payload
++ *
++ * Make sure to update @reserved_parts if you add more parts here.
++ */
+
-+ if (m->msg.flags & ~(KDBUS_MSG_EXPECT_REPLY |
-+ KDBUS_MSG_NO_AUTO_START |
-+ KDBUS_MSG_SIGNAL)) {
-+ ret = -EINVAL;
-+ goto exit_free;
++ ret = kdbus_staging_import(staging); /* payload */
++ kdbus_staging_reserve(staging); /* payload padding */
++
++ if (ret < 0)
++ goto error;
++
++ return staging;
++
++error:
++ kdbus_staging_free(staging);
++ return ERR_PTR(ret);
++}
++
++struct kdbus_staging *kdbus_staging_free(struct kdbus_staging *staging)
++{
++ if (!staging)
++ return NULL;
++
++ kdbus_meta_conn_unref(staging->meta_conn);
++ kdbus_meta_proc_unref(staging->meta_proc);
++ kdbus_gaps_unref(staging->gaps);
++ kfree(staging);
++
++ return NULL;
++}
++
++static int kdbus_staging_collect_metadata(struct kdbus_staging *staging,
++ struct kdbus_conn *src,
++ struct kdbus_conn *dst,
++ u64 *out_attach)
++{
++ u64 attach;
++ int ret;
++
++ if (src)
++ attach = kdbus_meta_msg_mask(src, dst);
++ else
++ attach = KDBUS_ATTACH_TIMESTAMP; /* metadata for kernel msgs */
++
++ if (src && !src->meta_fake) {
++ ret = kdbus_meta_proc_collect(staging->meta_proc, attach);
++ if (ret < 0)
++ return ret;
+ }
+
-+ ret = kdbus_items_validate(m->msg.items,
-+ KDBUS_ITEMS_SIZE(&m->msg, items));
++ ret = kdbus_meta_conn_collect(staging->meta_conn, src,
++ staging->msg_seqnum, attach);
+ if (ret < 0)
-+ goto exit_free;
++ return ret;
+
-+ m->res = kdbus_msg_resources_new();
-+ if (IS_ERR(m->res)) {
-+ ret = PTR_ERR(m->res);
-+ m->res = NULL;
-+ goto exit_free;
++ *out_attach = attach;
++ return 0;
++}
++
++/**
++ * kdbus_staging_emit() - emit linearized message in target pool
++ * @staging: staging object to create message from
++ * @src: sender of the message (or NULL)
++ * @dst: target connection to allocate message for
++ *
++ * This allocates a pool-slice for @dst and copies the message provided by
++ * @staging into it. The new slice is then returned to the caller for further
++ * processing. It's not linked into any queue, yet.
++ *
++ * Return: Newly allocated slice or ERR_PTR on failure.
++ */
++struct kdbus_pool_slice *kdbus_staging_emit(struct kdbus_staging *staging,
++ struct kdbus_conn *src,
++ struct kdbus_conn *dst)
++{
++ struct kdbus_item *item, *meta_items = NULL;
++ struct kdbus_pool_slice *slice = NULL;
++ size_t off, size, msg_size, meta_size;
++ struct iovec *v;
++ u64 attach;
++ int ret;
++
++ /*
++ * Step 1:
++ * Collect metadata from @src depending on the attach-flags allowed for
++ * @dst. Translate it into the namespaces pinned by @dst.
++ */
++
++ ret = kdbus_staging_collect_metadata(staging, src, dst, &attach);
++ if (ret < 0)
++ goto error;
++
++ ret = kdbus_meta_emit(staging->meta_proc, NULL, staging->meta_conn,
++ dst, attach, &meta_items, &meta_size);
++ if (ret < 0)
++ goto error;
++
++ /*
++ * Step 2:
++ * Setup iovecs for the message. See kdbus_staging_new() for allocation
++ * of those iovecs. All reserved iovecs have been initialized with
++ * iov_len=0 + iov_base=zeros. Furthermore, the iovecs to copy the
++ * actual message payload have already been initialized and need not be
++ * touched.
++ */
++
++ v = staging->parts;
++ msg_size = staging->msg->size;
++
++ /* msg.size */
++ v->iov_len = sizeof(msg_size);
++ v->iov_base = &msg_size;
++ ++v;
++
++ /* msg (after msg.size) plus items */
++ v->iov_len = staging->msg->size - sizeof(staging->msg->size);
++ v->iov_base = (void __user *)((u8 *)staging->msg +
++ sizeof(staging->msg->size));
++ ++v;
++
++ /* padding after msg */
++ v->iov_len = KDBUS_ALIGN8(staging->msg->size) - staging->msg->size;
++ v->iov_base = (void __user *)zeros;
++ ++v;
++
++ if (meta_size > 0) {
++ /* metadata items */
++ v->iov_len = meta_size;
++ v->iov_base = meta_items;
++ ++v;
++
++ /* padding after metadata */
++ v->iov_len = KDBUS_ALIGN8(meta_size) - meta_size;
++ v->iov_base = (void __user *)zeros;
++ ++v;
++
++ msg_size = KDBUS_ALIGN8(msg_size) + meta_size;
++ } else {
++ /* metadata items */
++ v->iov_len = 0;
++ v->iov_base = (void __user *)zeros;
++ ++v;
++
++ /* padding after metadata */
++ v->iov_len = 0;
++ v->iov_base = (void __user *)zeros;
++ ++v;
+ }
+
-+ /* do not accept kernel-generated messages */
-+ if (m->msg.payload_type == KDBUS_PAYLOAD_KERNEL) {
-+ ret = -EINVAL;
-+ goto exit_free;
++ /* ... payload iovecs are already filled in ... */
++
++ /* compute overall size and fill in padding after payload */
++ size = KDBUS_ALIGN8(msg_size);
++
++ if (staging->n_payload > 0) {
++ size += staging->n_payload;
++
++ v = &staging->parts[staging->n_parts - 1];
++ v->iov_len = KDBUS_ALIGN8(size) - size;
++ v->iov_base = (void __user *)zeros;
++
++ size = KDBUS_ALIGN8(size);
+ }
+
-+ if (m->msg.flags & KDBUS_MSG_EXPECT_REPLY) {
-+ /* requests for replies need timeout and cookie */
-+ if (m->msg.timeout_ns == 0 || m->msg.cookie == 0) {
-+ ret = -EINVAL;
-+ goto exit_free;
-+ }
++ /*
++ * Step 3:
++ * The PAYLOAD_OFF items in the message contain a relative 'offset'
++ * field that tells the receiver where to find the actual payload. This
++ * offset is relative to the start of the message, and as such depends
++ * on the size of the metadata items we inserted. This size is variable
++ * and changes for each peer we send the message to. Hence, we remember
++ * the last relative offset that was used to calculate the 'offset'
++ * fields. For each message, we re-calculate it and patch all items, in
++ * case it changed.
++ */
+
-+ /* replies may not be expected for broadcasts */
-+ if (m->msg.dst_id == KDBUS_DST_ID_BROADCAST) {
-+ ret = -ENOTUNIQ;
-+ goto exit_free;
-+ }
++ off = KDBUS_ALIGN8(msg_size);
+
-+ /* replies may not be expected for signals */
-+ if (m->msg.flags & KDBUS_MSG_SIGNAL) {
-+ ret = -EINVAL;
-+ goto exit_free;
-+ }
-+ } else {
-+ /*
-+ * KDBUS_SEND_SYNC_REPLY is only valid together with
-+ * KDBUS_MSG_EXPECT_REPLY
-+ */
-+ if (cmd_send->flags & KDBUS_SEND_SYNC_REPLY) {
-+ ret = -EINVAL;
-+ goto exit_free;
-+ }
++ if (off != staging->i_payload) {
++ KDBUS_ITEMS_FOREACH(item, staging->msg->items,
++ KDBUS_ITEMS_SIZE(staging->msg, items)) {
++ if (item->type != KDBUS_ITEM_PAYLOAD_OFF)
++ continue;
+
-+ /* replies cannot be signals */
-+ if (m->msg.cookie_reply && (m->msg.flags & KDBUS_MSG_SIGNAL)) {
-+ ret = -EINVAL;
-+ goto exit_free;
++ item->vec.offset -= staging->i_payload;
++ item->vec.offset += off;
+ }
++
++ staging->i_payload = off;
+ }
+
-+ ret = kdbus_msg_scan_items(m, conn->ep->bus);
++ /*
++ * Step 4:
++ * Allocate pool slice and copy over all data. Make sure to properly
++ * account on user quota.
++ */
++
++ ret = kdbus_conn_quota_inc(dst, src ? src->user : NULL, size,
++ staging->gaps ? staging->gaps->n_fds : 0);
+ if (ret < 0)
-+ goto exit_free;
++ goto error;
+
-+ /* patch-in the source of this message */
-+ if (m->msg.src_id > 0 && m->msg.src_id != conn->id) {
-+ ret = -EINVAL;
-+ goto exit_free;
++ slice = kdbus_pool_slice_alloc(dst->pool, size, true);
++ if (IS_ERR(slice)) {
++ ret = PTR_ERR(slice);
++ slice = NULL;
++ goto error;
+ }
-+ m->msg.src_id = conn->id;
-+
-+ return m;
+
-+exit_free:
-+ kdbus_kmsg_free(m);
-+ return ERR_PTR(ret);
-+}
++ WARN_ON(kdbus_pool_slice_size(slice) != size);
+
-+/**
-+ * kdbus_kmsg_collect_metadata() - collect metadata
-+ * @kmsg: message to collect metadata on
-+ * @src: source connection of message
-+ * @dst: destination connection of message
-+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_kmsg_collect_metadata(struct kdbus_kmsg *kmsg, struct kdbus_conn *src,
-+ struct kdbus_conn *dst)
-+{
-+ u64 attach;
-+ int ret;
++ ret = kdbus_pool_slice_copy_iovec(slice, 0, staging->parts,
++ staging->n_parts, size);
++ if (ret < 0)
++ goto error;
+
-+ attach = kdbus_meta_calc_attach_flags(src, dst);
-+ if (!src->faked_meta) {
-+ ret = kdbus_meta_proc_collect(kmsg->proc_meta, attach);
-+ if (ret < 0)
-+ return ret;
-+ }
++ /* all done, return slice to caller */
++ goto exit;
+
-+ return kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, src, attach);
++error:
++ if (slice)
++ kdbus_conn_quota_dec(dst, src ? src->user : NULL, size,
++ staging->gaps ? staging->gaps->n_fds : 0);
++ kdbus_pool_slice_release(slice);
++ slice = ERR_PTR(ret);
++exit:
++ kfree(meta_items);
++ return slice;
+}
diff --git a/ipc/kdbus/message.h b/ipc/kdbus/message.h
new file mode 100644
-index 0000000..cdaa65c
+index 0000000..298f9c9
--- /dev/null
+++ b/ipc/kdbus/message.h
-@@ -0,0 +1,135 @@
+@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -15623,131 +18073,116 @@ index 0000000..cdaa65c
+#ifndef __KDBUS_MESSAGE_H
+#define __KDBUS_MESSAGE_H
+
-+#include "util.h"
-+#include "metadata.h"
-+
-+/**
-+ * enum kdbus_msg_data_type - Type of kdbus_msg_data payloads
-+ * @KDBUS_MSG_DATA_VEC: Data vector provided by user-space
-+ * @KDBUS_MSG_DATA_MEMFD: Memfd payload
-+ */
-+enum kdbus_msg_data_type {
-+ KDBUS_MSG_DATA_VEC,
-+ KDBUS_MSG_DATA_MEMFD,
-+};
-+
-+/**
-+ * struct kdbus_msg_data - Data payload as stored by messages
-+ * @type: Type of payload (KDBUS_MSG_DATA_*)
-+ * @size: Size of the described payload
-+ * @off: The offset, relative to the vec slice
-+ * @start: Offset inside the memfd
-+ * @file: Backing file referenced by the memfd
-+ */
-+struct kdbus_msg_data {
-+ unsigned int type;
-+ u64 size;
++#include <linux/fs.h>
++#include <linux/kref.h>
++#include <uapi/linux/kdbus.h>
+
-+ union {
-+ struct {
-+ u64 off;
-+ } vec;
-+ struct {
-+ u64 start;
-+ struct file *file;
-+ } memfd;
-+ };
-+};
++struct kdbus_bus;
++struct kdbus_conn;
++struct kdbus_meta_conn;
++struct kdbus_meta_proc;
++struct kdbus_pool_slice;
+
+/**
-+ * struct kdbus_kmsg_resources - resources of a message
++ * struct kdbus_gaps - gaps in message to be filled later
+ * @kref: Reference counter
-+ * @dst_name: Short-cut to msg for faster lookup
-+ * @fds: Array of file descriptors to pass
-+ * @fds_count: Number of file descriptors to pass
-+ * @data: Array of data payloads
-+ * @vec_count: Number of VEC entries
-+ * @memfd_count: Number of MEMFD entries in @data
-+ * @data_count: Sum of @vec_count + @memfd_count
-+ */
-+struct kdbus_msg_resources {
++ * @n_memfd_offs: Number of memfds
++ * @memfd_offs: Offsets of kdbus_memfd items in target slice
++ * @n_fds: Number of fds
++ * @fds: Array of sent fds
++ * @fds_offset: Offset of fd-array in target slice
++ *
++ * The 'gaps' object is used to track data that is needed to fill gaps in a
++ * message at RECV time. Usually, we try to compile the whole message at SEND
++ * time. This has the advantage, that we don't have to cache any information and
++ * can keep the memory consumption small. Furthermore, all copy operations can
++ * be combined into a single function call, which speeds up transactions
++ * considerably.
++ * However, things like file-descriptors can only be fully installed at RECV
++ * time. The gaps object tracks this data and pins it until a message is
++ * received. The gaps object is shared between all receivers of the same
++ * message.
++ */
++struct kdbus_gaps {
+ struct kref kref;
-+ const char *dst_name;
+
-+ struct file **fds;
-+ unsigned int fds_count;
++ /* state tracking for KDBUS_ITEM_PAYLOAD_MEMFD entries */
++ size_t n_memfds;
++ u64 *memfd_offsets;
++ struct file **memfd_files;
+
-+ struct kdbus_msg_data *data;
-+ size_t vec_count;
-+ size_t memfd_count;
-+ size_t data_count;
++ /* state tracking for KDBUS_ITEM_FDS */
++ size_t n_fds;
++ struct file **fd_files;
++ u64 fd_offset;
+};
+
-+struct kdbus_msg_resources *
-+kdbus_msg_resources_ref(struct kdbus_msg_resources *r);
-+struct kdbus_msg_resources *
-+kdbus_msg_resources_unref(struct kdbus_msg_resources *r);
++struct kdbus_gaps *kdbus_gaps_ref(struct kdbus_gaps *gaps);
++struct kdbus_gaps *kdbus_gaps_unref(struct kdbus_gaps *gaps);
++int kdbus_gaps_install(struct kdbus_gaps *gaps, struct kdbus_pool_slice *slice,
++ bool *out_incomplete);
+
+/**
-+ * struct kdbus_kmsg - internal message handling data
-+ * @seq: Domain-global message sequence number
-+ * @notify_type: Short-cut for faster lookup
-+ * @notify_old_id: Short-cut for faster lookup
-+ * @notify_new_id: Short-cut for faster lookup
-+ * @notify_name: Short-cut for faster lookup
-+ * @dst_name_id: Short-cut to msg for faster lookup
-+ * @bloom_filter: Bloom filter to match message properties
-+ * @bloom_generation: Generation of bloom element set
-+ * @notify_entry: List of kernel-generated notifications
-+ * @iov: Array of iovec, describing the payload to copy
-+ * @iov_count: Number of array members in @iov
-+ * @pool_size: Overall size of inlined data referenced by @iov
-+ * @proc_meta: Appended SCM-like metadata of the sending process
-+ * @conn_meta: Appended SCM-like metadata of the sending connection
-+ * @res: Message resources
-+ * @msg: Message from or to userspace
-+ */
-+struct kdbus_kmsg {
-+ u64 seq;
-+ u64 notify_type;
-+ u64 notify_old_id;
-+ u64 notify_new_id;
-+ const char *notify_name;
-+
-+ u64 dst_name_id;
-+ const struct kdbus_bloom_filter *bloom_filter;
-+ u64 bloom_generation;
++ * struct kdbus_staging - staging area to import messages
++ * @msg: User-supplied message
++ * @gaps: Gaps-object created during import (or NULL if empty)
++ * @msg_seqnum: Message sequence number
++ * @notify_entry: Entry into list of kernel-generated notifications
++ * @i_payload: Current relative index of start of payload
++ * @n_payload: Total number of bytes needed for payload
++ * @n_parts: Number of parts
++ * @parts: Array of iovecs that make up the whole message
++ * @meta_proc: Process metadata of the sender (or NULL if empty)
++ * @meta_conn: Connection metadata of the sender (or NULL if empty)
++ * @bloom_filter: Pointer to the bloom-item in @msg, or NULL
++ * @dst_name: Pointer to the dst-name-item in @msg, or NULL
++ * @notify: Pointer to the notification item in @msg, or NULL
++ *
++ * The kdbus_staging object is a temporary staging area to import user-supplied
++ * messages into the kernel. It is only used during SEND and dropped once the
++ * message is queued. Any data that cannot be collected during SEND, is
++ * collected in a kdbus_gaps object and attached to the message queue.
++ */
++struct kdbus_staging {
++ struct kdbus_msg *msg;
++ struct kdbus_gaps *gaps;
++ u64 msg_seqnum;
+ struct list_head notify_entry;
+
-+ struct iovec *iov;
-+ size_t iov_count;
-+ u64 pool_size;
++ /* crafted iovecs to copy the message */
++ size_t i_payload;
++ size_t n_payload;
++ size_t n_parts;
++ struct iovec *parts;
+
-+ struct kdbus_meta_proc *proc_meta;
-+ struct kdbus_meta_conn *conn_meta;
-+ struct kdbus_msg_resources *res;
++ /* metadata state */
++ struct kdbus_meta_proc *meta_proc;
++ struct kdbus_meta_conn *meta_conn;
+
-+ /* variable size, must be the last member */
-+ struct kdbus_msg msg;
++ /* cached pointers into @msg */
++ const struct kdbus_bloom_filter *bloom_filter;
++ const char *dst_name;
++ struct kdbus_item *notify;
+};
+
-+struct kdbus_bus;
-+struct kdbus_conn;
-+
-+struct kdbus_kmsg *kdbus_kmsg_new(struct kdbus_bus *bus, size_t extra_size);
-+struct kdbus_kmsg *kdbus_kmsg_new_from_cmd(struct kdbus_conn *conn,
-+ struct kdbus_cmd_send *cmd_send);
-+void kdbus_kmsg_free(struct kdbus_kmsg *kmsg);
-+int kdbus_kmsg_collect_metadata(struct kdbus_kmsg *kmsg, struct kdbus_conn *src,
-+ struct kdbus_conn *dst);
++struct kdbus_staging *kdbus_staging_new_kernel(struct kdbus_bus *bus,
++ u64 dst, u64 cookie_timeout,
++ size_t it_size, size_t it_type);
++struct kdbus_staging *kdbus_staging_new_user(struct kdbus_bus *bus,
++ struct kdbus_cmd_send *cmd,
++ struct kdbus_msg *msg);
++struct kdbus_staging *kdbus_staging_free(struct kdbus_staging *staging);
++struct kdbus_pool_slice *kdbus_staging_emit(struct kdbus_staging *staging,
++ struct kdbus_conn *src,
++ struct kdbus_conn *dst);
+
+#endif
diff --git a/ipc/kdbus/metadata.c b/ipc/kdbus/metadata.c
new file mode 100644
-index 0000000..c36b9cc
+index 0000000..d4973a9
--- /dev/null
+++ b/ipc/kdbus/metadata.c
-@@ -0,0 +1,1184 @@
+@@ -0,0 +1,1342 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -15794,26 +18229,16 @@ index 0000000..c36b9cc
+ * @lock: Object lock
+ * @collected: Bitmask of collected items
+ * @valid: Bitmask of collected and valid items
-+ * @uid: UID of process
-+ * @euid: EUID of process
-+ * @suid: SUID of process
-+ * @fsuid: FSUID of process
-+ * @gid: GID of process
-+ * @egid: EGID of process
-+ * @sgid: SGID of process
-+ * @fsgid: FSGID of process
++ * @cred: Credentials
+ * @pid: PID of process
+ * @tgid: TGID of process
+ * @ppid: PPID of process
-+ * @auxgrps: Auxiliary groups
-+ * @n_auxgrps: Number of items in @auxgrps
+ * @tid_comm: TID comm line
+ * @pid_comm: PID comm line
+ * @exe_path: Executable path
+ * @root_path: Root-FS path
+ * @cmdline: Command-line
+ * @cgroup: Full cgroup path
-+ * @cred: Credentials
+ * @seclabel: Seclabel
+ * @audit_loginuid: Audit login-UID
+ * @audit_sessionid: Audit session-ID
@@ -15825,18 +18250,15 @@ index 0000000..c36b9cc
+ u64 valid;
+
+ /* KDBUS_ITEM_CREDS */
-+ kuid_t uid, euid, suid, fsuid;
-+ kgid_t gid, egid, sgid, fsgid;
++ /* KDBUS_ITEM_AUXGROUPS */
++ /* KDBUS_ITEM_CAPS */
++ const struct cred *cred;
+
+ /* KDBUS_ITEM_PIDS */
+ struct pid *pid;
+ struct pid *tgid;
+ struct pid *ppid;
+
-+ /* KDBUS_ITEM_AUXGROUPS */
-+ kgid_t *auxgrps;
-+ size_t n_auxgrps;
-+
+ /* KDBUS_ITEM_TID_COMM */
+ char tid_comm[TASK_COMM_LEN];
+ /* KDBUS_ITEM_PID_COMM */
@@ -15852,9 +18274,6 @@ index 0000000..c36b9cc
+ /* KDBUS_ITEM_CGROUP */
+ char *cgroup;
+
-+ /* KDBUS_ITEM_CAPS */
-+ const struct cred *cred;
-+
+ /* KDBUS_ITEM_SECLABEL */
+ char *seclabel;
+
@@ -15932,7 +18351,6 @@ index 0000000..c36b9cc
+ put_pid(mp->pid);
+
+ kfree(mp->seclabel);
-+ kfree(mp->auxgrps);
+ kfree(mp->cmdline);
+ kfree(mp->cgroup);
+ kfree(mp);
@@ -15964,21 +18382,6 @@ index 0000000..c36b9cc
+ return NULL;
+}
+
-+static void kdbus_meta_proc_collect_creds(struct kdbus_meta_proc *mp)
-+{
-+ mp->uid = current_uid();
-+ mp->euid = current_euid();
-+ mp->suid = current_suid();
-+ mp->fsuid = current_fsuid();
-+
-+ mp->gid = current_gid();
-+ mp->egid = current_egid();
-+ mp->sgid = current_sgid();
-+ mp->fsgid = current_fsgid();
-+
-+ mp->valid |= KDBUS_ATTACH_CREDS;
-+}
-+
+static void kdbus_meta_proc_collect_pids(struct kdbus_meta_proc *mp)
+{
+ struct task_struct *parent;
@@ -15994,30 +18397,6 @@ index 0000000..c36b9cc
+ mp->valid |= KDBUS_ATTACH_PIDS;
+}
+
-+static int kdbus_meta_proc_collect_auxgroups(struct kdbus_meta_proc *mp)
-+{
-+ const struct group_info *info;
-+ size_t i;
-+
-+ /* no need to lock/ref, current creds cannot change */
-+ info = current_cred()->group_info;
-+
-+ if (info->ngroups > 0) {
-+ mp->auxgrps = kmalloc_array(info->ngroups, sizeof(kgid_t),
-+ GFP_KERNEL);
-+ if (!mp->auxgrps)
-+ return -ENOMEM;
-+
-+ for (i = 0; i < info->ngroups; i++)
-+ mp->auxgrps[i] = GROUP_AT(info, i);
-+ }
-+
-+ mp->n_auxgrps = info->ngroups;
-+ mp->valid |= KDBUS_ATTACH_AUXGROUPS;
-+
-+ return 0;
-+}
-+
+static void kdbus_meta_proc_collect_tid_comm(struct kdbus_meta_proc *mp)
+{
+ get_task_comm(mp->tid_comm, current);
@@ -16090,12 +18469,6 @@ index 0000000..c36b9cc
+ return 0;
+}
+
-+static void kdbus_meta_proc_collect_caps(struct kdbus_meta_proc *mp)
-+{
-+ mp->cred = get_current_cred();
-+ mp->valid |= KDBUS_ATTACH_CAPS;
-+}
-+
+static int kdbus_meta_proc_collect_seclabel(struct kdbus_meta_proc *mp)
+{
+#ifdef CONFIG_SECURITY
@@ -16162,10 +18535,17 @@ index 0000000..c36b9cc
+
+ mutex_lock(&mp->lock);
+
-+ if ((what & KDBUS_ATTACH_CREDS) &&
-+ !(mp->collected & KDBUS_ATTACH_CREDS)) {
-+ kdbus_meta_proc_collect_creds(mp);
-+ mp->collected |= KDBUS_ATTACH_CREDS;
++ /* creds, auxgrps and caps share "struct cred" as context */
++ {
++ const u64 m_cred = KDBUS_ATTACH_CREDS |
++ KDBUS_ATTACH_AUXGROUPS |
++ KDBUS_ATTACH_CAPS;
++
++ if ((what & m_cred) && !(mp->collected & m_cred)) {
++ mp->cred = get_current_cred();
++ mp->valid |= m_cred;
++ mp->collected |= m_cred;
++ }
+ }
+
+ if ((what & KDBUS_ATTACH_PIDS) &&
@@ -16174,14 +18554,6 @@ index 0000000..c36b9cc
+ mp->collected |= KDBUS_ATTACH_PIDS;
+ }
+
-+ if ((what & KDBUS_ATTACH_AUXGROUPS) &&
-+ !(mp->collected & KDBUS_ATTACH_AUXGROUPS)) {
-+ ret = kdbus_meta_proc_collect_auxgroups(mp);
-+ if (ret < 0)
-+ goto exit_unlock;
-+ mp->collected |= KDBUS_ATTACH_AUXGROUPS;
-+ }
-+
+ if ((what & KDBUS_ATTACH_TID_COMM) &&
+ !(mp->collected & KDBUS_ATTACH_TID_COMM)) {
+ kdbus_meta_proc_collect_tid_comm(mp);
@@ -16216,12 +18588,6 @@ index 0000000..c36b9cc
+ mp->collected |= KDBUS_ATTACH_CGROUP;
+ }
+
-+ if ((what & KDBUS_ATTACH_CAPS) &&
-+ !(mp->collected & KDBUS_ATTACH_CAPS)) {
-+ kdbus_meta_proc_collect_caps(mp);
-+ mp->collected |= KDBUS_ATTACH_CAPS;
-+ }
-+
+ if ((what & KDBUS_ATTACH_SECLABEL) &&
+ !(mp->collected & KDBUS_ATTACH_SECLABEL)) {
+ ret = kdbus_meta_proc_collect_seclabel(mp);
@@ -16244,101 +18610,116 @@ index 0000000..c36b9cc
+}
+
+/**
-+ * kdbus_meta_proc_fake() - Fill process metadata from faked credentials
-+ * @mp: Metadata
++ * kdbus_meta_fake_new() - Create fake metadata object
++ *
++ * Return: Pointer to new object on success, ERR_PTR on failure.
++ */
++struct kdbus_meta_fake *kdbus_meta_fake_new(void)
++{
++ struct kdbus_meta_fake *mf;
++
++ mf = kzalloc(sizeof(*mf), GFP_KERNEL);
++ if (!mf)
++ return ERR_PTR(-ENOMEM);
++
++ return mf;
++}
++
++/**
++ * kdbus_meta_fake_free() - Free fake metadata object
++ * @mf: Fake metadata object
++ *
++ * Return: NULL
++ */
++struct kdbus_meta_fake *kdbus_meta_fake_free(struct kdbus_meta_fake *mf)
++{
++ if (mf) {
++ put_pid(mf->ppid);
++ put_pid(mf->tgid);
++ put_pid(mf->pid);
++ kfree(mf->seclabel);
++ kfree(mf);
++ }
++
++ return NULL;
++}
++
++/**
++ * kdbus_meta_fake_collect() - Fill fake metadata from faked credentials
++ * @mf: Fake metadata object
+ * @creds: Creds to set, may be %NULL
+ * @pids: PIDs to set, may be %NULL
+ * @seclabel: Seclabel to set, may be %NULL
+ *
+ * This function takes information stored in @creds, @pids and @seclabel and
-+ * resolves them to kernel-representations, if possible. A call to this function
-+ * is considered an alternative to calling kdbus_meta_add_current(), which
-+ * derives the same information from the 'current' task.
++ * resolves them to kernel-representations, if possible. This call uses the
++ * current task's namespaces to resolve the given information.
+ *
-+ * This call uses the current task's namespaces to resolve the given
-+ * information.
-+ *
-+ * Return: 0 on success, negative error number otherwise.
++ * Return: 0 on success, negative error code on failure.
+ */
-+int kdbus_meta_proc_fake(struct kdbus_meta_proc *mp,
-+ const struct kdbus_creds *creds,
-+ const struct kdbus_pids *pids,
-+ const char *seclabel)
++int kdbus_meta_fake_collect(struct kdbus_meta_fake *mf,
++ const struct kdbus_creds *creds,
++ const struct kdbus_pids *pids,
++ const char *seclabel)
+{
-+ int ret;
-+
-+ if (!mp)
-+ return 0;
-+
-+ mutex_lock(&mp->lock);
++ if (mf->valid)
++ return -EALREADY;
+
-+ if (creds && !(mp->collected & KDBUS_ATTACH_CREDS)) {
++ if (creds) {
+ struct user_namespace *ns = current_user_ns();
+
-+ mp->uid = make_kuid(ns, creds->uid);
-+ mp->euid = make_kuid(ns, creds->euid);
-+ mp->suid = make_kuid(ns, creds->suid);
-+ mp->fsuid = make_kuid(ns, creds->fsuid);
-+
-+ mp->gid = make_kgid(ns, creds->gid);
-+ mp->egid = make_kgid(ns, creds->egid);
-+ mp->sgid = make_kgid(ns, creds->sgid);
-+ mp->fsgid = make_kgid(ns, creds->fsgid);
-+
-+ if ((creds->uid != (uid_t)-1 && !uid_valid(mp->uid)) ||
-+ (creds->euid != (uid_t)-1 && !uid_valid(mp->euid)) ||
-+ (creds->suid != (uid_t)-1 && !uid_valid(mp->suid)) ||
-+ (creds->fsuid != (uid_t)-1 && !uid_valid(mp->fsuid)) ||
-+ (creds->gid != (gid_t)-1 && !gid_valid(mp->gid)) ||
-+ (creds->egid != (gid_t)-1 && !gid_valid(mp->egid)) ||
-+ (creds->sgid != (gid_t)-1 && !gid_valid(mp->sgid)) ||
-+ (creds->fsgid != (gid_t)-1 && !gid_valid(mp->fsgid))) {
-+ ret = -EINVAL;
-+ goto exit_unlock;
-+ }
++ mf->uid = make_kuid(ns, creds->uid);
++ mf->euid = make_kuid(ns, creds->euid);
++ mf->suid = make_kuid(ns, creds->suid);
++ mf->fsuid = make_kuid(ns, creds->fsuid);
++
++ mf->gid = make_kgid(ns, creds->gid);
++ mf->egid = make_kgid(ns, creds->egid);
++ mf->sgid = make_kgid(ns, creds->sgid);
++ mf->fsgid = make_kgid(ns, creds->fsgid);
++
++ if ((creds->uid != (uid_t)-1 && !uid_valid(mf->uid)) ||
++ (creds->euid != (uid_t)-1 && !uid_valid(mf->euid)) ||
++ (creds->suid != (uid_t)-1 && !uid_valid(mf->suid)) ||
++ (creds->fsuid != (uid_t)-1 && !uid_valid(mf->fsuid)) ||
++ (creds->gid != (gid_t)-1 && !gid_valid(mf->gid)) ||
++ (creds->egid != (gid_t)-1 && !gid_valid(mf->egid)) ||
++ (creds->sgid != (gid_t)-1 && !gid_valid(mf->sgid)) ||
++ (creds->fsgid != (gid_t)-1 && !gid_valid(mf->fsgid)))
++ return -EINVAL;
+
-+ mp->valid |= KDBUS_ATTACH_CREDS;
-+ mp->collected |= KDBUS_ATTACH_CREDS;
++ mf->valid |= KDBUS_ATTACH_CREDS;
+ }
+
-+ if (pids && !(mp->collected & KDBUS_ATTACH_PIDS)) {
-+ mp->pid = get_pid(find_vpid(pids->tid));
-+ mp->tgid = get_pid(find_vpid(pids->pid));
-+ mp->ppid = get_pid(find_vpid(pids->ppid));
++ if (pids) {
++ mf->pid = get_pid(find_vpid(pids->tid));
++ mf->tgid = get_pid(find_vpid(pids->pid));
++ mf->ppid = get_pid(find_vpid(pids->ppid));
+
-+ if ((pids->tid != 0 && !mp->pid) ||
-+ (pids->pid != 0 && !mp->tgid) ||
-+ (pids->ppid != 0 && !mp->ppid)) {
-+ put_pid(mp->pid);
-+ put_pid(mp->tgid);
-+ put_pid(mp->ppid);
-+ mp->pid = NULL;
-+ mp->tgid = NULL;
-+ mp->ppid = NULL;
-+ ret = -EINVAL;
-+ goto exit_unlock;
++ if ((pids->tid != 0 && !mf->pid) ||
++ (pids->pid != 0 && !mf->tgid) ||
++ (pids->ppid != 0 && !mf->ppid)) {
++ put_pid(mf->pid);
++ put_pid(mf->tgid);
++ put_pid(mf->ppid);
++ mf->pid = NULL;
++ mf->tgid = NULL;
++ mf->ppid = NULL;
++ return -EINVAL;
+ }
+
-+ mp->valid |= KDBUS_ATTACH_PIDS;
-+ mp->collected |= KDBUS_ATTACH_PIDS;
++ mf->valid |= KDBUS_ATTACH_PIDS;
+ }
+
-+ if (seclabel && !(mp->collected & KDBUS_ATTACH_SECLABEL)) {
-+ mp->seclabel = kstrdup(seclabel, GFP_KERNEL);
-+ if (!mp->seclabel) {
-+ ret = -ENOMEM;
-+ goto exit_unlock;
-+ }
++ if (seclabel) {
++ mf->seclabel = kstrdup(seclabel, GFP_KERNEL);
++ if (!mf->seclabel)
++ return -ENOMEM;
+
-+ mp->valid |= KDBUS_ATTACH_SECLABEL;
-+ mp->collected |= KDBUS_ATTACH_SECLABEL;
++ mf->valid |= KDBUS_ATTACH_SECLABEL;
+ }
+
-+ ret = 0;
-+
-+exit_unlock:
-+ mutex_unlock(&mp->lock);
-+ return ret;
++ return 0;
+}
+
+/**
@@ -16393,13 +18774,13 @@ index 0000000..c36b9cc
+}
+
+static void kdbus_meta_conn_collect_timestamp(struct kdbus_meta_conn *mc,
-+ struct kdbus_kmsg *kmsg)
++ u64 msg_seqnum)
+{
+ mc->ts.monotonic_ns = ktime_get_ns();
+ mc->ts.realtime_ns = ktime_get_real_ns();
+
-+ if (kmsg)
-+ mc->ts.seqnum = kmsg->seq;
++ if (msg_seqnum)
++ mc->ts.seqnum = msg_seqnum;
+
+ mc->valid |= KDBUS_ATTACH_TIMESTAMP;
+}
@@ -16414,14 +18795,16 @@ index 0000000..c36b9cc
+ lockdep_assert_held(&conn->ep->bus->name_registry->rwlock);
+
+ size = 0;
++ /* open-code length calculation to avoid final padding */
+ list_for_each_entry(e, &conn->names_list, conn_entry)
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_name) +
-+ strlen(e->name) + 1);
++ size = KDBUS_ALIGN8(size) + KDBUS_ITEM_HEADER_SIZE +
++ sizeof(struct kdbus_name) + strlen(e->name) + 1;
+
+ if (!size)
+ return 0;
+
-+ item = kmalloc(size, GFP_KERNEL);
++ /* make sure we include zeroed padding for convenience helpers */
++ item = kmalloc(KDBUS_ALIGN8(size), GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
@@ -16438,7 +18821,8 @@ index 0000000..c36b9cc
+ }
+
+ /* sanity check: the buffer should be completely written now */
-+ WARN_ON((u8 *)item != (u8 *)mc->owned_names_items + size);
++ WARN_ON((u8 *)item !=
++ (u8 *)mc->owned_names_items + KDBUS_ALIGN8(size));
+
+ mc->valid |= KDBUS_ATTACH_NAMES;
+ return 0;
@@ -16461,184 +18845,63 @@ index 0000000..c36b9cc
+/**
+ * kdbus_meta_conn_collect() - Collect connection metadata
+ * @mc: Message metadata object
-+ * @kmsg: Kmsg to collect data from
+ * @conn: Connection to collect data from
++ * @msg_seqnum: Sequence number of the message to send
+ * @what: Attach flags to collect
+ *
-+ * This collects connection metadata from @kmsg and @conn and saves it in @mc.
++ * This collects connection metadata from @msg_seqnum and @conn and saves it
++ * in @mc.
+ *
+ * If KDBUS_ATTACH_NAMES is set in @what and @conn is non-NULL, the caller must
+ * hold the name-registry read-lock of conn->ep->bus->registry.
+ *
-+ * Return: 0 on success, negative error code on failure.
-+ */
-+int kdbus_meta_conn_collect(struct kdbus_meta_conn *mc,
-+ struct kdbus_kmsg *kmsg,
-+ struct kdbus_conn *conn,
-+ u64 what)
-+{
-+ int ret;
-+
-+ if (!mc || !(what & (KDBUS_ATTACH_TIMESTAMP |
-+ KDBUS_ATTACH_NAMES |
-+ KDBUS_ATTACH_CONN_DESCRIPTION)))
-+ return 0;
-+
-+ mutex_lock(&mc->lock);
-+
-+ if (kmsg && (what & KDBUS_ATTACH_TIMESTAMP) &&
-+ !(mc->collected & KDBUS_ATTACH_TIMESTAMP)) {
-+ kdbus_meta_conn_collect_timestamp(mc, kmsg);
-+ mc->collected |= KDBUS_ATTACH_TIMESTAMP;
-+ }
-+
-+ if (conn && (what & KDBUS_ATTACH_NAMES) &&
-+ !(mc->collected & KDBUS_ATTACH_NAMES)) {
-+ ret = kdbus_meta_conn_collect_names(mc, conn);
-+ if (ret < 0)
-+ goto exit_unlock;
-+ mc->collected |= KDBUS_ATTACH_NAMES;
-+ }
-+
-+ if (conn && (what & KDBUS_ATTACH_CONN_DESCRIPTION) &&
-+ !(mc->collected & KDBUS_ATTACH_CONN_DESCRIPTION)) {
-+ ret = kdbus_meta_conn_collect_description(mc, conn);
-+ if (ret < 0)
-+ goto exit_unlock;
-+ mc->collected |= KDBUS_ATTACH_CONN_DESCRIPTION;
-+ }
-+
-+ ret = 0;
-+
-+exit_unlock:
-+ mutex_unlock(&mc->lock);
-+ return ret;
-+}
-+
-+/*
-+ * kdbus_meta_export_prepare() - Prepare metadata for export
-+ * @mp: Process metadata, or NULL
-+ * @mc: Connection metadata, or NULL
-+ * @mask: Pointer to mask of KDBUS_ATTACH_* flags to export
-+ * @sz: Pointer to return the size needed by the metadata
-+ *
-+ * Does a conservative calculation of how much space metadata information
-+ * will take up during export. It is 'conservative' because for string
-+ * translations in namespaces, it will use the kernel namespaces, which is
-+ * the longest possible version.
-+ *
-+ * The actual size consumed by kdbus_meta_export() may hence vary from the
-+ * one reported here, but it is guaranteed never to be greater.
-+ *
-+ * Return: 0 on success, negative error number otherwise.
-+ */
-+int kdbus_meta_export_prepare(struct kdbus_meta_proc *mp,
-+ struct kdbus_meta_conn *mc,
-+ u64 *mask, size_t *sz)
-+{
-+ char *exe_pathname = NULL;
-+ void *exe_page = NULL;
-+ size_t size = 0;
-+ u64 valid = 0;
-+ int ret = 0;
-+
-+ if (mp) {
-+ mutex_lock(&mp->lock);
-+ valid |= mp->valid;
-+ mutex_unlock(&mp->lock);
-+ }
-+
-+ if (mc) {
-+ mutex_lock(&mc->lock);
-+ valid |= mc->valid;
-+ mutex_unlock(&mc->lock);
-+ }
-+
-+ *mask &= valid;
-+
-+ if (!*mask)
-+ goto exit;
-+
-+ /* process metadata */
-+
-+ if (mp && (*mask & KDBUS_ATTACH_CREDS))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_creds));
-+
-+ if (mp && (*mask & KDBUS_ATTACH_PIDS))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_pids));
-+
-+ if (mp && (*mask & KDBUS_ATTACH_AUXGROUPS))
-+ size += KDBUS_ITEM_SIZE(mp->n_auxgrps * sizeof(u64));
-+
-+ if (mp && (*mask & KDBUS_ATTACH_TID_COMM))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->tid_comm) + 1);
-+
-+ if (mp && (*mask & KDBUS_ATTACH_PID_COMM))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->pid_comm) + 1);
-+
-+ if (mp && (*mask & KDBUS_ATTACH_EXE)) {
-+ exe_page = (void *)__get_free_page(GFP_TEMPORARY);
-+ if (!exe_page) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ exe_pathname = d_path(&mp->exe_path, exe_page, PAGE_SIZE);
-+ if (IS_ERR(exe_pathname)) {
-+ ret = PTR_ERR(exe_pathname);
-+ goto exit;
-+ }
-+
-+ size += KDBUS_ITEM_SIZE(strlen(exe_pathname) + 1);
-+ free_page((unsigned long)exe_page);
-+ }
-+
-+ if (mp && (*mask & KDBUS_ATTACH_CMDLINE))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->cmdline) + 1);
-+
-+ if (mp && (*mask & KDBUS_ATTACH_CGROUP))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->cgroup) + 1);
-+
-+ if (mp && (*mask & KDBUS_ATTACH_CAPS))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_meta_caps));
-+
-+ if (mp && (*mask & KDBUS_ATTACH_SECLABEL))
-+ size += KDBUS_ITEM_SIZE(strlen(mp->seclabel) + 1);
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_meta_conn_collect(struct kdbus_meta_conn *mc,
++ struct kdbus_conn *conn,
++ u64 msg_seqnum, u64 what)
++{
++ int ret;
+
-+ if (mp && (*mask & KDBUS_ATTACH_AUDIT))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_audit));
++ if (!mc || !(what & (KDBUS_ATTACH_TIMESTAMP |
++ KDBUS_ATTACH_NAMES |
++ KDBUS_ATTACH_CONN_DESCRIPTION)))
++ return 0;
+
-+ /* connection metadata */
++ mutex_lock(&mc->lock);
+
-+ if (mc && (*mask & KDBUS_ATTACH_NAMES))
-+ size += mc->owned_names_size;
++ if (msg_seqnum && (what & KDBUS_ATTACH_TIMESTAMP) &&
++ !(mc->collected & KDBUS_ATTACH_TIMESTAMP)) {
++ kdbus_meta_conn_collect_timestamp(mc, msg_seqnum);
++ mc->collected |= KDBUS_ATTACH_TIMESTAMP;
++ }
+
-+ if (mc && (*mask & KDBUS_ATTACH_CONN_DESCRIPTION))
-+ size += KDBUS_ITEM_SIZE(strlen(mc->conn_description) + 1);
++ if (conn && (what & KDBUS_ATTACH_NAMES) &&
++ !(mc->collected & KDBUS_ATTACH_NAMES)) {
++ ret = kdbus_meta_conn_collect_names(mc, conn);
++ if (ret < 0)
++ goto exit_unlock;
++ mc->collected |= KDBUS_ATTACH_NAMES;
++ }
+
-+ if (mc && (*mask & KDBUS_ATTACH_TIMESTAMP))
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_timestamp));
++ if (conn && (what & KDBUS_ATTACH_CONN_DESCRIPTION) &&
++ !(mc->collected & KDBUS_ATTACH_CONN_DESCRIPTION)) {
++ ret = kdbus_meta_conn_collect_description(mc, conn);
++ if (ret < 0)
++ goto exit_unlock;
++ mc->collected |= KDBUS_ATTACH_CONN_DESCRIPTION;
++ }
+
-+exit:
-+ *sz = size;
++ ret = 0;
+
++exit_unlock:
++ mutex_unlock(&mc->lock);
+ return ret;
+}
+
-+static int kdbus_meta_push_kvec(struct kvec *kvec,
-+ struct kdbus_item_header *hdr,
-+ u64 type, void *payload,
-+ size_t payload_size, u64 *size)
-+{
-+ hdr->type = type;
-+ hdr->size = KDBUS_ITEM_HEADER_SIZE + payload_size;
-+ kdbus_kvec_set(kvec++, hdr, sizeof(*hdr), size);
-+ kdbus_kvec_set(kvec++, payload, payload_size, size);
-+ return 2 + !!kdbus_kvec_pad(kvec++, size);
-+}
-+
+static void kdbus_meta_export_caps(struct kdbus_meta_caps *out,
-+ struct kdbus_meta_proc *mp)
++ const struct kdbus_meta_proc *mp,
++ struct user_namespace *user_ns)
+{
+ struct user_namespace *iter;
+ const struct cred *cred = mp->cred;
@@ -16646,18 +18909,18 @@ index 0000000..c36b9cc
+ int i;
+
+ /*
-+ * This translates the effective capabilities of 'cred' into the current
-+ * user-namespace. If the current user-namespace is a child-namespace of
++ * This translates the effective capabilities of 'cred' into the given
++ * user-namespace. If the given user-namespace is a child-namespace of
+ * the user-namespace of 'cred', the mask can be copied verbatim. If
+ * not, the mask is cleared.
+ * There's one exception: If 'cred' is the owner of any user-namespace
-+ * in the path between the current user-namespace and the user-namespace
++ * in the path between the given user-namespace and the user-namespace
+ * of 'cred', then it has all effective capabilities set. This means,
+ * the user who created a user-namespace always has all effective
+ * capabilities in any child namespaces. Note that this is based on the
+ * uid of the namespace creator, not the task hierarchy.
+ */
-+ for (iter = current_user_ns(); iter; iter = iter->parent) {
++ for (iter = user_ns; iter; iter = iter->parent) {
+ if (iter == cred->user_ns) {
+ parent = true;
+ break;
@@ -16701,126 +18964,327 @@ index 0000000..c36b9cc
+}
+
+/* This is equivalent to from_kuid_munged(), but maps INVALID_UID to itself */
-+static uid_t kdbus_from_kuid_keep(kuid_t uid)
++static uid_t kdbus_from_kuid_keep(struct user_namespace *ns, kuid_t uid)
+{
-+ return uid_valid(uid) ?
-+ from_kuid_munged(current_user_ns(), uid) : ((uid_t)-1);
++ return uid_valid(uid) ? from_kuid_munged(ns, uid) : ((uid_t)-1);
+}
+
+/* This is equivalent to from_kgid_munged(), but maps INVALID_GID to itself */
-+static gid_t kdbus_from_kgid_keep(kgid_t gid)
++static gid_t kdbus_from_kgid_keep(struct user_namespace *ns, kgid_t gid)
+{
-+ return gid_valid(gid) ?
-+ from_kgid_munged(current_user_ns(), gid) : ((gid_t)-1);
++ return gid_valid(gid) ? from_kgid_munged(ns, gid) : ((gid_t)-1);
+}
+
-+/**
-+ * kdbus_meta_export() - export information from metadata into a slice
-+ * @mp: Process metadata, or NULL
-+ * @mc: Connection metadata, or NULL
-+ * @mask: Mask of KDBUS_ATTACH_* flags to export
-+ * @slice: The slice to export to
-+ * @offset: The offset inside @slice to write to
-+ * @real_size: The real size the metadata consumed
-+ *
-+ * This function exports information from metadata into @slice at offset
-+ * @offset inside that slice. Only information that is requested in @mask
-+ * and that has been collected before is exported.
-+ *
-+ * In order to make sure not to write out of bounds, @mask must be the same
-+ * value that was previously returned from kdbus_meta_export_prepare(). The
-+ * function will, however, not necessarily write as many bytes as returned by
-+ * kdbus_meta_export_prepare(); depending on the namespaces in question, it
-+ * might use up less than that.
-+ *
-+ * All information will be translated using the current namespaces.
-+ *
-+ * Return: 0 on success, negative error number otherwise.
-+ */
-+int kdbus_meta_export(struct kdbus_meta_proc *mp,
-+ struct kdbus_meta_conn *mc,
-+ u64 mask,
-+ struct kdbus_pool_slice *slice,
-+ off_t offset,
-+ size_t *real_size)
-+{
-+ struct user_namespace *user_ns = current_user_ns();
-+ struct kdbus_item_header item_hdr[13], *hdr;
-+ char *exe_pathname = NULL;
-+ struct kdbus_creds creds;
-+ struct kdbus_pids pids;
-+ void *exe_page = NULL;
-+ struct kvec kvec[40];
-+ u64 *auxgrps = NULL;
-+ size_t cnt = 0;
-+ u64 size = 0;
-+ int ret = 0;
++struct kdbus_meta_staging {
++ const struct kdbus_meta_proc *mp;
++ const struct kdbus_meta_fake *mf;
++ const struct kdbus_meta_conn *mc;
++ const struct kdbus_conn *conn;
++ u64 mask;
+
-+ hdr = &item_hdr[0];
++ void *exe;
++ const char *exe_path;
++};
+
-+ if (mask == 0) {
-+ *real_size = 0;
-+ return 0;
-+ }
++static size_t kdbus_meta_measure(struct kdbus_meta_staging *staging)
++{
++ const struct kdbus_meta_proc *mp = staging->mp;
++ const struct kdbus_meta_fake *mf = staging->mf;
++ const struct kdbus_meta_conn *mc = staging->mc;
++ const u64 mask = staging->mask;
++ size_t size = 0;
++
++ /* process metadata */
++
++ if (mf && (mask & KDBUS_ATTACH_CREDS))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_creds));
++ else if (mp && (mask & KDBUS_ATTACH_CREDS))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_creds));
++
++ if (mf && (mask & KDBUS_ATTACH_PIDS))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_pids));
++ else if (mp && (mask & KDBUS_ATTACH_PIDS))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_pids));
++
++ if (mp && (mask & KDBUS_ATTACH_AUXGROUPS))
++ size += KDBUS_ITEM_SIZE(mp->cred->group_info->ngroups *
++ sizeof(u64));
++
++ if (mp && (mask & KDBUS_ATTACH_TID_COMM))
++ size += KDBUS_ITEM_SIZE(strlen(mp->tid_comm) + 1);
++
++ if (mp && (mask & KDBUS_ATTACH_PID_COMM))
++ size += KDBUS_ITEM_SIZE(strlen(mp->pid_comm) + 1);
++
++ if (staging->exe_path && (mask & KDBUS_ATTACH_EXE))
++ size += KDBUS_ITEM_SIZE(strlen(staging->exe_path) + 1);
++
++ if (mp && (mask & KDBUS_ATTACH_CMDLINE))
++ size += KDBUS_ITEM_SIZE(strlen(mp->cmdline) + 1);
++
++ if (mp && (mask & KDBUS_ATTACH_CGROUP))
++ size += KDBUS_ITEM_SIZE(strlen(mp->cgroup) + 1);
++
++ if (mp && (mask & KDBUS_ATTACH_CAPS))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_meta_caps));
++
++ if (mf && (mask & KDBUS_ATTACH_SECLABEL))
++ size += KDBUS_ITEM_SIZE(strlen(mf->seclabel) + 1);
++ else if (mp && (mask & KDBUS_ATTACH_SECLABEL))
++ size += KDBUS_ITEM_SIZE(strlen(mp->seclabel) + 1);
++
++ if (mp && (mask & KDBUS_ATTACH_AUDIT))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_audit));
++
++ /* connection metadata */
++
++ if (mc && (mask & KDBUS_ATTACH_NAMES))
++ size += KDBUS_ALIGN8(mc->owned_names_size);
++
++ if (mc && (mask & KDBUS_ATTACH_CONN_DESCRIPTION))
++ size += KDBUS_ITEM_SIZE(strlen(mc->conn_description) + 1);
++
++ if (mc && (mask & KDBUS_ATTACH_TIMESTAMP))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_timestamp));
++
++ return size;
++}
++
++static struct kdbus_item *kdbus_write_head(struct kdbus_item **iter,
++ u64 type, u64 size)
++{
++ struct kdbus_item *item = *iter;
++ size_t padding;
++
++ item->type = type;
++ item->size = KDBUS_ITEM_HEADER_SIZE + size;
++
++ /* clear padding */
++ padding = KDBUS_ALIGN8(item->size) - item->size;
++ if (padding)
++ memset(item->data + size, 0, padding);
++
++ *iter = KDBUS_ITEM_NEXT(item);
++ return item;
++}
++
++static struct kdbus_item *kdbus_write_full(struct kdbus_item **iter,
++ u64 type, u64 size, const void *data)
++{
++ struct kdbus_item *item;
++
++ item = kdbus_write_head(iter, type, size);
++ memcpy(item->data, data, size);
++ return item;
++}
++
++static size_t kdbus_meta_write(struct kdbus_meta_staging *staging, void *mem,
++ size_t size)
++{
++ struct user_namespace *user_ns = staging->conn->cred->user_ns;
++ struct pid_namespace *pid_ns = ns_of_pid(staging->conn->pid);
++ struct kdbus_item *item = NULL, *items = mem;
++ u8 *end, *owned_names_end = NULL;
+
+ /* process metadata */
+
-+ if (mp && (mask & KDBUS_ATTACH_CREDS)) {
-+ creds.uid = kdbus_from_kuid_keep(mp->uid);
-+ creds.euid = kdbus_from_kuid_keep(mp->euid);
-+ creds.suid = kdbus_from_kuid_keep(mp->suid);
-+ creds.fsuid = kdbus_from_kuid_keep(mp->fsuid);
-+ creds.gid = kdbus_from_kgid_keep(mp->gid);
-+ creds.egid = kdbus_from_kgid_keep(mp->egid);
-+ creds.sgid = kdbus_from_kgid_keep(mp->sgid);
-+ creds.fsgid = kdbus_from_kgid_keep(mp->fsgid);
++ if (staging->mf && (staging->mask & KDBUS_ATTACH_CREDS)) {
++ const struct kdbus_meta_fake *mf = staging->mf;
++
++ item = kdbus_write_head(&items, KDBUS_ITEM_CREDS,
++ sizeof(struct kdbus_creds));
++ item->creds = (struct kdbus_creds){
++ .uid = kdbus_from_kuid_keep(user_ns, mf->uid),
++ .euid = kdbus_from_kuid_keep(user_ns, mf->euid),
++ .suid = kdbus_from_kuid_keep(user_ns, mf->suid),
++ .fsuid = kdbus_from_kuid_keep(user_ns, mf->fsuid),
++ .gid = kdbus_from_kgid_keep(user_ns, mf->gid),
++ .egid = kdbus_from_kgid_keep(user_ns, mf->egid),
++ .sgid = kdbus_from_kgid_keep(user_ns, mf->sgid),
++ .fsgid = kdbus_from_kgid_keep(user_ns, mf->fsgid),
++ };
++ } else if (staging->mp && (staging->mask & KDBUS_ATTACH_CREDS)) {
++ const struct cred *c = staging->mp->cred;
++
++ item = kdbus_write_head(&items, KDBUS_ITEM_CREDS,
++ sizeof(struct kdbus_creds));
++ item->creds = (struct kdbus_creds){
++ .uid = kdbus_from_kuid_keep(user_ns, c->uid),
++ .euid = kdbus_from_kuid_keep(user_ns, c->euid),
++ .suid = kdbus_from_kuid_keep(user_ns, c->suid),
++ .fsuid = kdbus_from_kuid_keep(user_ns, c->fsuid),
++ .gid = kdbus_from_kgid_keep(user_ns, c->gid),
++ .egid = kdbus_from_kgid_keep(user_ns, c->egid),
++ .sgid = kdbus_from_kgid_keep(user_ns, c->sgid),
++ .fsgid = kdbus_from_kgid_keep(user_ns, c->fsgid),
++ };
++ }
++
++ if (staging->mf && (staging->mask & KDBUS_ATTACH_PIDS)) {
++ item = kdbus_write_head(&items, KDBUS_ITEM_PIDS,
++ sizeof(struct kdbus_pids));
++ item->pids = (struct kdbus_pids){
++ .pid = pid_nr_ns(staging->mf->tgid, pid_ns),
++ .tid = pid_nr_ns(staging->mf->pid, pid_ns),
++ .ppid = pid_nr_ns(staging->mf->ppid, pid_ns),
++ };
++ } else if (staging->mp && (staging->mask & KDBUS_ATTACH_PIDS)) {
++ item = kdbus_write_head(&items, KDBUS_ITEM_PIDS,
++ sizeof(struct kdbus_pids));
++ item->pids = (struct kdbus_pids){
++ .pid = pid_nr_ns(staging->mp->tgid, pid_ns),
++ .tid = pid_nr_ns(staging->mp->pid, pid_ns),
++ .ppid = pid_nr_ns(staging->mp->ppid, pid_ns),
++ };
++ }
+
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++, KDBUS_ITEM_CREDS,
-+ &creds, sizeof(creds), &size);
++ if (staging->mp && (staging->mask & KDBUS_ATTACH_AUXGROUPS)) {
++ const struct group_info *info = staging->mp->cred->group_info;
++ size_t i;
++
++ item = kdbus_write_head(&items, KDBUS_ITEM_AUXGROUPS,
++ info->ngroups * sizeof(u64));
++ for (i = 0; i < info->ngroups; ++i)
++ item->data64[i] = from_kgid_munged(user_ns,
++ GROUP_AT(info, i));
++ }
++
++ if (staging->mp && (staging->mask & KDBUS_ATTACH_TID_COMM))
++ item = kdbus_write_full(&items, KDBUS_ITEM_TID_COMM,
++ strlen(staging->mp->tid_comm) + 1,
++ staging->mp->tid_comm);
++
++ if (staging->mp && (staging->mask & KDBUS_ATTACH_PID_COMM))
++ item = kdbus_write_full(&items, KDBUS_ITEM_PID_COMM,
++ strlen(staging->mp->pid_comm) + 1,
++ staging->mp->pid_comm);
++
++ if (staging->exe_path && (staging->mask & KDBUS_ATTACH_EXE))
++ item = kdbus_write_full(&items, KDBUS_ITEM_EXE,
++ strlen(staging->exe_path) + 1,
++ staging->exe_path);
++
++ if (staging->mp && (staging->mask & KDBUS_ATTACH_CMDLINE))
++ item = kdbus_write_full(&items, KDBUS_ITEM_CMDLINE,
++ strlen(staging->mp->cmdline) + 1,
++ staging->mp->cmdline);
++
++ if (staging->mp && (staging->mask & KDBUS_ATTACH_CGROUP))
++ item = kdbus_write_full(&items, KDBUS_ITEM_CGROUP,
++ strlen(staging->mp->cgroup) + 1,
++ staging->mp->cgroup);
++
++ if (staging->mp && (staging->mask & KDBUS_ATTACH_CAPS)) {
++ item = kdbus_write_head(&items, KDBUS_ITEM_CAPS,
++ sizeof(struct kdbus_meta_caps));
++ kdbus_meta_export_caps((void*)&item->caps, staging->mp,
++ user_ns);
++ }
++
++ if (staging->mf && (staging->mask & KDBUS_ATTACH_SECLABEL))
++ item = kdbus_write_full(&items, KDBUS_ITEM_SECLABEL,
++ strlen(staging->mf->seclabel) + 1,
++ staging->mf->seclabel);
++ else if (staging->mp && (staging->mask & KDBUS_ATTACH_SECLABEL))
++ item = kdbus_write_full(&items, KDBUS_ITEM_SECLABEL,
++ strlen(staging->mp->seclabel) + 1,
++ staging->mp->seclabel);
++
++ if (staging->mp && (staging->mask & KDBUS_ATTACH_AUDIT)) {
++ item = kdbus_write_head(&items, KDBUS_ITEM_AUDIT,
++ sizeof(struct kdbus_audit));
++ item->audit = (struct kdbus_audit){
++ .loginuid = from_kuid(user_ns,
++ staging->mp->audit_loginuid),
++ .sessionid = staging->mp->audit_sessionid,
++ };
+ }
+
-+ if (mp && (mask & KDBUS_ATTACH_PIDS)) {
-+ pids.pid = pid_vnr(mp->tgid);
-+ pids.tid = pid_vnr(mp->pid);
-+ pids.ppid = pid_vnr(mp->ppid);
++ /* connection metadata */
+
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++, KDBUS_ITEM_PIDS,
-+ &pids, sizeof(pids), &size);
++ if (staging->mc && (staging->mask & KDBUS_ATTACH_NAMES)) {
++ memcpy(items, staging->mc->owned_names_items,
++ KDBUS_ALIGN8(staging->mc->owned_names_size));
++ owned_names_end = (u8 *)items + staging->mc->owned_names_size;
++ items = (void *)KDBUS_ALIGN8((unsigned long)owned_names_end);
+ }
+
-+ if (mp && (mask & KDBUS_ATTACH_AUXGROUPS)) {
-+ size_t payload_size = mp->n_auxgrps * sizeof(u64);
-+ int i;
++ if (staging->mc && (staging->mask & KDBUS_ATTACH_CONN_DESCRIPTION))
++ item = kdbus_write_full(&items, KDBUS_ITEM_CONN_DESCRIPTION,
++ strlen(staging->mc->conn_description) + 1,
++ staging->mc->conn_description);
+
-+ auxgrps = kmalloc(payload_size, GFP_KERNEL);
-+ if (!auxgrps) {
-+ ret = -ENOMEM;
-+ goto exit;
-+ }
++ if (staging->mc && (staging->mask & KDBUS_ATTACH_TIMESTAMP))
++ item = kdbus_write_full(&items, KDBUS_ITEM_TIMESTAMP,
++ sizeof(staging->mc->ts),
++ &staging->mc->ts);
++
++ /*
++ * Return real size (minus trailing padding). In case of 'owned_names'
++ * we cannot deduce it from item->size, so treat it special.
++ */
++
++ if (items == (void *)KDBUS_ALIGN8((unsigned long)owned_names_end))
++ end = owned_names_end;
++ else if (item)
++ end = (u8 *)item + item->size;
++ else
++ end = mem;
++
++ WARN_ON((u8 *)items - (u8 *)mem != size);
++ WARN_ON((void *)KDBUS_ALIGN8((unsigned long)end) != (void *)items);
++
++ return end - (u8 *)mem;
++}
++
++int kdbus_meta_emit(struct kdbus_meta_proc *mp,
++ struct kdbus_meta_fake *mf,
++ struct kdbus_meta_conn *mc,
++ struct kdbus_conn *conn,
++ u64 mask,
++ struct kdbus_item **out_items,
++ size_t *out_size)
++{
++ struct kdbus_meta_staging staging = {};
++ struct kdbus_item *items = NULL;
++ size_t size = 0;
++ int ret;
++
++ if (WARN_ON(mf && mp))
++ mp = NULL;
+
-+ for (i = 0; i < mp->n_auxgrps; i++)
-+ auxgrps[i] = from_kgid_munged(user_ns, mp->auxgrps[i]);
++ staging.mp = mp;
++ staging.mf = mf;
++ staging.mc = mc;
++ staging.conn = conn;
+
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_AUXGROUPS,
-+ auxgrps, payload_size, &size);
++ /* get mask of valid items */
++ if (mf)
++ staging.mask |= mf->valid;
++ if (mp) {
++ mutex_lock(&mp->lock);
++ staging.mask |= mp->valid;
++ mutex_unlock(&mp->lock);
++ }
++ if (mc) {
++ mutex_lock(&mc->lock);
++ staging.mask |= mc->valid;
++ mutex_unlock(&mc->lock);
+ }
+
-+ if (mp && (mask & KDBUS_ATTACH_TID_COMM))
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_TID_COMM, mp->tid_comm,
-+ strlen(mp->tid_comm) + 1, &size);
++ staging.mask &= mask;
+
-+ if (mp && (mask & KDBUS_ATTACH_PID_COMM))
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_PID_COMM, mp->pid_comm,
-+ strlen(mp->pid_comm) + 1, &size);
++ if (!staging.mask) { /* bail out if nothing to do */
++ ret = 0;
++ goto exit;
++ }
+
-+ if (mp && (mask & KDBUS_ATTACH_EXE)) {
++ /* EXE is special as it needs a temporary page to assemble */
++ if (mp && (staging.mask & KDBUS_ATTACH_EXE)) {
+ struct path p;
+
+ /*
-+ * TODO: We need access to __d_path() so we can write the path
++ * XXX: We need access to __d_path() so we can write the path
+ * relative to conn->root_path. Once upstream, we need
+ * EXPORT_SYMBOL(__d_path) or an equivalent of d_path() that
+ * takes the root path directly. Until then, we drop this item
@@ -16828,116 +19292,245 @@ index 0000000..c36b9cc
+ */
+
+ get_fs_root(current->fs, &p);
-+ if (path_equal(&p, &mp->root_path)) {
-+ exe_page = (void *)__get_free_page(GFP_TEMPORARY);
-+ if (!exe_page) {
++ if (path_equal(&p, &conn->root_path)) {
++ staging.exe = (void *)__get_free_page(GFP_TEMPORARY);
++ if (!staging.exe) {
+ path_put(&p);
+ ret = -ENOMEM;
+ goto exit;
+ }
+
-+ exe_pathname = d_path(&mp->exe_path, exe_page,
-+ PAGE_SIZE);
-+ if (IS_ERR(exe_pathname)) {
++ staging.exe_path = d_path(&mp->exe_path, staging.exe,
++ PAGE_SIZE);
++ if (IS_ERR(staging.exe_path)) {
+ path_put(&p);
-+ ret = PTR_ERR(exe_pathname);
++ ret = PTR_ERR(staging.exe_path);
+ goto exit;
+ }
-+
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_EXE,
-+ exe_pathname,
-+ strlen(exe_pathname) + 1,
-+ &size);
+ }
+ path_put(&p);
+ }
+
-+ if (mp && (mask & KDBUS_ATTACH_CMDLINE))
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_CMDLINE, mp->cmdline,
-+ strlen(mp->cmdline) + 1, &size);
++ size = kdbus_meta_measure(&staging);
++ if (!size) { /* bail out if nothing to do */
++ ret = 0;
++ goto exit;
++ }
+
-+ if (mp && (mask & KDBUS_ATTACH_CGROUP))
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_CGROUP, mp->cgroup,
-+ strlen(mp->cgroup) + 1, &size);
++ items = kmalloc(size, GFP_KERNEL);
++ if (!items) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ size = kdbus_meta_write(&staging, items, size);
++ if (!size) {
++ kfree(items);
++ items = NULL;
++ }
+
-+ if (mp && (mask & KDBUS_ATTACH_CAPS)) {
-+ struct kdbus_meta_caps caps = {};
++ ret = 0;
+
-+ kdbus_meta_export_caps(&caps, mp);
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_CAPS, &caps,
-+ sizeof(caps), &size);
++exit:
++ if (staging.exe)
++ free_page((unsigned long)staging.exe);
++ if (ret >= 0) {
++ *out_items = items;
++ *out_size = size;
+ }
++ return ret;
++}
+
-+ if (mp && (mask & KDBUS_ATTACH_SECLABEL))
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_SECLABEL, mp->seclabel,
-+ strlen(mp->seclabel) + 1, &size);
++enum {
++ KDBUS_META_PROC_NONE,
++ KDBUS_META_PROC_NORMAL,
++};
+
-+ if (mp && (mask & KDBUS_ATTACH_AUDIT)) {
-+ struct kdbus_audit a = {
-+ .loginuid = from_kuid(user_ns, mp->audit_loginuid),
-+ .sessionid = mp->audit_sessionid,
-+ };
++/**
++ * kdbus_proc_permission() - check /proc permissions on target pid
++ * @pid_ns: namespace we operate in
++ * @cred: credentials of requestor
++ * @target: target process
++ *
++ * This checks whether a process with credentials @cred can access information
++ * of @target in the namespace @pid_ns. This tries to follow /proc permissions,
++ * but is slightly more restrictive.
++ *
++ * Return: The /proc access level (KDBUS_META_PROC_*) is returned.
++ */
++static unsigned int kdbus_proc_permission(const struct pid_namespace *pid_ns,
++ const struct cred *cred,
++ struct pid *target)
++{
++ if (pid_ns->hide_pid < 1)
++ return KDBUS_META_PROC_NORMAL;
+
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++, KDBUS_ITEM_AUDIT,
-+ &a, sizeof(a), &size);
-+ }
++ /* XXX: we need groups_search() exported for aux-groups */
++ if (gid_eq(cred->egid, pid_ns->pid_gid))
++ return KDBUS_META_PROC_NORMAL;
+
-+ /* connection metadata */
++ /*
++ * XXX: If ptrace_may_access(PTRACE_MODE_READ) is granted, you can
++ * overwrite hide_pid. However, ptrace_may_access() only supports
++ * checking 'current', hence, we cannot use this here. But we
++ * simply decide to not support this override, so no need to worry.
++ */
+
-+ if (mc && (mask & KDBUS_ATTACH_NAMES))
-+ kdbus_kvec_set(&kvec[cnt++], mc->owned_names_items,
-+ mc->owned_names_size, &size);
++ return KDBUS_META_PROC_NONE;
++}
+
-+ if (mc && (mask & KDBUS_ATTACH_CONN_DESCRIPTION))
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_CONN_DESCRIPTION,
-+ mc->conn_description,
-+ strlen(mc->conn_description) + 1,
-+ &size);
++/**
++ * kdbus_meta_proc_mask() - calculate which metadata would be visible to
++ * a connection via /proc
++ * @prv_pid: pid of metadata provider
++ * @req_pid: pid of metadata requestor
++ * @req_cred: credentials of metadata reqeuestor
++ * @wanted: metadata that is requested
++ *
++ * This checks which metadata items of @prv_pid can be read via /proc by the
++ * requestor @req_pid.
++ *
++ * Return: Set of metadata flags the requestor can see (limited by @wanted).
++ */
++static u64 kdbus_meta_proc_mask(struct pid *prv_pid,
++ struct pid *req_pid,
++ const struct cred *req_cred,
++ u64 wanted)
++{
++ struct pid_namespace *prv_ns, *req_ns;
++ unsigned int proc;
+
-+ if (mc && (mask & KDBUS_ATTACH_TIMESTAMP))
-+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_TIMESTAMP, &mc->ts,
-+ sizeof(mc->ts), &size);
++ prv_ns = ns_of_pid(prv_pid);
++ req_ns = ns_of_pid(req_pid);
++
++ /*
++ * If the sender is not visible in the receiver namespace, then the
++ * receiver cannot access the sender via its own procfs. Hence, we do
++ * not attach any additional metadata.
++ */
++ if (!pid_nr_ns(prv_pid, req_ns))
++ return 0;
+
-+ ret = kdbus_pool_slice_copy_kvec(slice, offset, kvec, cnt, size);
-+ *real_size = size;
++ /*
++ * If the pid-namespace of the receiver has hide_pid set, it cannot see
++ * any process but its own. We shortcut this /proc permission check if
++ * provider and requestor are the same. If not, we perform rather
++ * expensive /proc permission checks.
++ */
++ if (prv_pid == req_pid)
++ proc = KDBUS_META_PROC_NORMAL;
++ else
++ proc = kdbus_proc_permission(req_ns, req_cred, prv_pid);
++
++ /* you need /proc access to read standard process attributes */
++ if (proc < KDBUS_META_PROC_NORMAL)
++ wanted &= ~(KDBUS_ATTACH_TID_COMM |
++ KDBUS_ATTACH_PID_COMM |
++ KDBUS_ATTACH_SECLABEL |
++ KDBUS_ATTACH_CMDLINE |
++ KDBUS_ATTACH_CGROUP |
++ KDBUS_ATTACH_AUDIT |
++ KDBUS_ATTACH_CAPS |
++ KDBUS_ATTACH_EXE);
++
++ /* clear all non-/proc flags */
++ return wanted & (KDBUS_ATTACH_TID_COMM |
++ KDBUS_ATTACH_PID_COMM |
++ KDBUS_ATTACH_SECLABEL |
++ KDBUS_ATTACH_CMDLINE |
++ KDBUS_ATTACH_CGROUP |
++ KDBUS_ATTACH_AUDIT |
++ KDBUS_ATTACH_CAPS |
++ KDBUS_ATTACH_EXE);
++}
+
-+exit:
-+ kfree(auxgrps);
++/**
++ * kdbus_meta_get_mask() - calculate attach flags mask for metadata request
++ * @prv_pid: pid of metadata provider
++ * @prv_mask: mask of metadata the provide grants unchecked
++ * @req_pid: pid of metadata requestor
++ * @req_cred: credentials of metadata requestor
++ * @req_mask: mask of metadata that is requested
++ *
++ * This calculates the metadata items that the requestor @req_pid can access
++ * from the metadata provider @prv_pid. This permission check consists of
++ * several different parts:
++ * - Providers can grant metadata items unchecked. Regardless of their type,
++ * they're always granted to the requestor. This mask is passed as @prv_mask.
++ * - Basic items (credentials and connection metadata) are granted implicitly
++ * to everyone. They're publicly available to any bus-user that can see the
++ * provider.
++ * - Process credentials that are not granted implicitly follow the same
++ * permission checks as /proc. This means, we always assume a requestor
++ * process has access to their *own* /proc mount, if they have access to
++ * kdbusfs.
++ *
++ * Return: Mask of metadata that is granted.
++ */
++static u64 kdbus_meta_get_mask(struct pid *prv_pid, u64 prv_mask,
++ struct pid *req_pid,
++ const struct cred *req_cred, u64 req_mask)
++{
++ u64 missing, impl_mask, proc_mask = 0;
+
-+ if (exe_page)
-+ free_page((unsigned long)exe_page);
++ /*
++ * Connection metadata and basic unix process credentials are
++ * transmitted implicitly, and cannot be suppressed. Both are required
++ * to perform user-space policies on the receiver-side. Furthermore,
++ * connection metadata is public state, anyway, and unix credentials
++ * are needed for UDS-compatibility. We extend them slightly by
++ * auxiliary groups and additional uids/gids/pids.
++ */
++ impl_mask = /* connection metadata */
++ KDBUS_ATTACH_CONN_DESCRIPTION |
++ KDBUS_ATTACH_TIMESTAMP |
++ KDBUS_ATTACH_NAMES |
++ /* credentials and pids */
++ KDBUS_ATTACH_AUXGROUPS |
++ KDBUS_ATTACH_CREDS |
++ KDBUS_ATTACH_PIDS;
+
-+ return ret;
++ /*
++ * Calculate the set of metadata that is not granted implicitly nor by
++ * the sender, but still requested by the receiver. If any are left,
++ * perform rather expensive /proc access checks for them.
++ */
++ missing = req_mask & ~((prv_mask | impl_mask) & req_mask);
++ if (missing)
++ proc_mask = kdbus_meta_proc_mask(prv_pid, req_pid, req_cred,
++ missing);
++
++ return (prv_mask | impl_mask | proc_mask) & req_mask;
++}
++
++/**
++ */
++u64 kdbus_meta_info_mask(const struct kdbus_conn *conn, u64 mask)
++{
++ return kdbus_meta_get_mask(conn->pid,
++ atomic64_read(&conn->attach_flags_send),
++ task_pid(current),
++ current_cred(),
++ mask);
+}
+
+/**
-+ * kdbus_meta_calc_attach_flags() - calculate attach flags for a sender
-+ * and a receiver
-+ * @sender: Sending connection
-+ * @receiver: Receiving connection
-+ *
-+ * Return: the attach flags both the sender and the receiver have opted-in
-+ * for.
+ */
-+u64 kdbus_meta_calc_attach_flags(const struct kdbus_conn *sender,
-+ const struct kdbus_conn *receiver)
++u64 kdbus_meta_msg_mask(const struct kdbus_conn *snd,
++ const struct kdbus_conn *rcv)
+{
-+ return atomic64_read(&sender->attach_flags_send) &
-+ atomic64_read(&receiver->attach_flags_recv);
++ return kdbus_meta_get_mask(task_pid(current),
++ atomic64_read(&snd->attach_flags_send),
++ rcv->pid,
++ rcv->cred,
++ atomic64_read(&rcv->attach_flags_recv));
+}
diff --git a/ipc/kdbus/metadata.h b/ipc/kdbus/metadata.h
new file mode 100644
-index 0000000..79b6ac3
+index 0000000..dba7cc7
--- /dev/null
+++ b/ipc/kdbus/metadata.h
-@@ -0,0 +1,55 @@
+@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -16958,44 +19551,75 @@ index 0000000..79b6ac3
+#include <linux/kernel.h>
+
+struct kdbus_conn;
-+struct kdbus_kmsg;
+struct kdbus_pool_slice;
+
+struct kdbus_meta_proc;
+struct kdbus_meta_conn;
+
++/**
++ * struct kdbus_meta_fake - Fake metadata
++ * @valid: Bitmask of collected and valid items
++ * @uid: UID of process
++ * @euid: EUID of process
++ * @suid: SUID of process
++ * @fsuid: FSUID of process
++ * @gid: GID of process
++ * @egid: EGID of process
++ * @sgid: SGID of process
++ * @fsgid: FSGID of process
++ * @pid: PID of process
++ * @tgid: TGID of process
++ * @ppid: PPID of process
++ * @seclabel: Seclabel
++ */
++struct kdbus_meta_fake {
++ u64 valid;
++
++ /* KDBUS_ITEM_CREDS */
++ kuid_t uid, euid, suid, fsuid;
++ kgid_t gid, egid, sgid, fsgid;
++
++ /* KDBUS_ITEM_PIDS */
++ struct pid *pid, *tgid, *ppid;
++
++ /* KDBUS_ITEM_SECLABEL */
++ char *seclabel;
++};
++
+struct kdbus_meta_proc *kdbus_meta_proc_new(void);
+struct kdbus_meta_proc *kdbus_meta_proc_ref(struct kdbus_meta_proc *mp);
+struct kdbus_meta_proc *kdbus_meta_proc_unref(struct kdbus_meta_proc *mp);
+int kdbus_meta_proc_collect(struct kdbus_meta_proc *mp, u64 what);
-+int kdbus_meta_proc_fake(struct kdbus_meta_proc *mp,
-+ const struct kdbus_creds *creds,
-+ const struct kdbus_pids *pids,
-+ const char *seclabel);
++
++struct kdbus_meta_fake *kdbus_meta_fake_new(void);
++struct kdbus_meta_fake *kdbus_meta_fake_free(struct kdbus_meta_fake *mf);
++int kdbus_meta_fake_collect(struct kdbus_meta_fake *mf,
++ const struct kdbus_creds *creds,
++ const struct kdbus_pids *pids,
++ const char *seclabel);
+
+struct kdbus_meta_conn *kdbus_meta_conn_new(void);
+struct kdbus_meta_conn *kdbus_meta_conn_ref(struct kdbus_meta_conn *mc);
+struct kdbus_meta_conn *kdbus_meta_conn_unref(struct kdbus_meta_conn *mc);
+int kdbus_meta_conn_collect(struct kdbus_meta_conn *mc,
-+ struct kdbus_kmsg *kmsg,
+ struct kdbus_conn *conn,
-+ u64 what);
-+
-+int kdbus_meta_export_prepare(struct kdbus_meta_proc *mp,
-+ struct kdbus_meta_conn *mc,
-+ u64 *mask, size_t *sz);
-+int kdbus_meta_export(struct kdbus_meta_proc *mp,
-+ struct kdbus_meta_conn *mc,
-+ u64 mask,
-+ struct kdbus_pool_slice *slice,
-+ off_t offset, size_t *real_size);
-+u64 kdbus_meta_calc_attach_flags(const struct kdbus_conn *sender,
-+ const struct kdbus_conn *receiver);
++ u64 msg_seqnum, u64 what);
++
++int kdbus_meta_emit(struct kdbus_meta_proc *mp,
++ struct kdbus_meta_fake *mf,
++ struct kdbus_meta_conn *mc,
++ struct kdbus_conn *conn,
++ u64 mask,
++ struct kdbus_item **out_items,
++ size_t *out_size);
++u64 kdbus_meta_info_mask(const struct kdbus_conn *conn, u64 mask);
++u64 kdbus_meta_msg_mask(const struct kdbus_conn *snd,
++ const struct kdbus_conn *rcv);
+
+#endif
diff --git a/ipc/kdbus/names.c b/ipc/kdbus/names.c
new file mode 100644
-index 0000000..d77ee08
+index 0000000..057f806
--- /dev/null
+++ b/ipc/kdbus/names.c
@@ -0,0 +1,770 @@
@@ -17445,7 +20069,7 @@ index 0000000..d77ee08
+
+ down_write(®->rwlock);
+
-+ if (kdbus_conn_is_activator(conn)) {
++ if (conn->activator_of) {
+ activator = conn->activator_of->activator;
+ conn->activator_of->activator = NULL;
+ }
@@ -17851,7 +20475,7 @@ index 0000000..3dd2589
+#endif
diff --git a/ipc/kdbus/node.c b/ipc/kdbus/node.c
new file mode 100644
-index 0000000..0d65c65
+index 0000000..89f58bc
--- /dev/null
+++ b/ipc/kdbus/node.c
@@ -0,0 +1,897 @@
@@ -17977,7 +20601,7 @@ index 0000000..0d65c65
+ * new active references can be acquired.
+ * Once all active references are dropped, the node is considered 'drained'. Now
+ * kdbus_node_deactivate() is called on each child of the node before we
-+ * continue deactvating our node. That is, once all children are entirely
++ * continue deactivating our node. That is, once all children are entirely
+ * deactivated, we call ->release_cb() of our node. ->release_cb() can release
+ * any resources on that node which are bound to the "active" state of a node.
+ * When done, we unlink the node from its parent rb-tree, mark it as
@@ -18494,7 +21118,7 @@ index 0000000..0d65c65
+ kdbus_fs_flush(pos);
+
+ /*
-+ * If the node was activated and somone subtracted BIAS
++ * If the node was activated and someone subtracted BIAS
+ * from it to deactivate it, we, and only us, are
+ * responsible to release the extra ref-count that was
+ * taken once in kdbus_node_activate().
@@ -18846,10 +21470,10 @@ index 0000000..970e02b
+#endif
diff --git a/ipc/kdbus/notify.c b/ipc/kdbus/notify.c
new file mode 100644
-index 0000000..e4a4542
+index 0000000..375758c
--- /dev/null
+++ b/ipc/kdbus/notify.c
-@@ -0,0 +1,248 @@
+@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -18880,40 +21504,24 @@ index 0000000..e4a4542
+#include "message.h"
+#include "notify.h"
+
-+static inline void kdbus_notify_add_tail(struct kdbus_kmsg *kmsg,
++static inline void kdbus_notify_add_tail(struct kdbus_staging *staging,
+ struct kdbus_bus *bus)
+{
+ spin_lock(&bus->notify_lock);
-+ list_add_tail(&kmsg->notify_entry, &bus->notify_list);
++ list_add_tail(&staging->notify_entry, &bus->notify_list);
+ spin_unlock(&bus->notify_lock);
+}
+
+static int kdbus_notify_reply(struct kdbus_bus *bus, u64 id,
+ u64 cookie, u64 msg_type)
+{
-+ struct kdbus_kmsg *kmsg = NULL;
-+
-+ WARN_ON(id == 0);
-+
-+ kmsg = kdbus_kmsg_new(bus, 0);
-+ if (IS_ERR(kmsg))
-+ return PTR_ERR(kmsg);
++ struct kdbus_staging *s;
+
-+ /*
-+ * a kernel-generated notification can only contain one
-+ * struct kdbus_item, so make a shortcut here for
-+ * faster lookup in the match db.
-+ */
-+ kmsg->notify_type = msg_type;
-+ kmsg->msg.flags = KDBUS_MSG_SIGNAL;
-+ kmsg->msg.dst_id = id;
-+ kmsg->msg.src_id = KDBUS_SRC_ID_KERNEL;
-+ kmsg->msg.payload_type = KDBUS_PAYLOAD_KERNEL;
-+ kmsg->msg.cookie_reply = cookie;
-+ kmsg->msg.items[0].type = msg_type;
-+
-+ kdbus_notify_add_tail(kmsg, bus);
++ s = kdbus_staging_new_kernel(bus, id, cookie, 0, msg_type);
++ if (IS_ERR(s))
++ return PTR_ERR(s);
+
++ kdbus_notify_add_tail(s, bus);
+ return 0;
+}
+
@@ -18967,78 +21575,52 @@ index 0000000..e4a4542
+ u64 old_flags, u64 new_flags,
+ const char *name)
+{
-+ struct kdbus_kmsg *kmsg = NULL;
+ size_t name_len, extra_size;
++ struct kdbus_staging *s;
+
+ name_len = strlen(name) + 1;
+ extra_size = sizeof(struct kdbus_notify_name_change) + name_len;
-+ kmsg = kdbus_kmsg_new(bus, extra_size);
-+ if (IS_ERR(kmsg))
-+ return PTR_ERR(kmsg);
-+
-+ kmsg->msg.flags = KDBUS_MSG_SIGNAL;
-+ kmsg->msg.dst_id = KDBUS_DST_ID_BROADCAST;
-+ kmsg->msg.src_id = KDBUS_SRC_ID_KERNEL;
-+ kmsg->msg.payload_type = KDBUS_PAYLOAD_KERNEL;
-+ kmsg->notify_type = type;
-+ kmsg->notify_old_id = old_id;
-+ kmsg->notify_new_id = new_id;
-+ kmsg->msg.items[0].type = type;
-+ kmsg->msg.items[0].name_change.old_id.id = old_id;
-+ kmsg->msg.items[0].name_change.old_id.flags = old_flags;
-+ kmsg->msg.items[0].name_change.new_id.id = new_id;
-+ kmsg->msg.items[0].name_change.new_id.flags = new_flags;
-+ memcpy(kmsg->msg.items[0].name_change.name, name, name_len);
-+ kmsg->notify_name = kmsg->msg.items[0].name_change.name;
-+
-+ kdbus_notify_add_tail(kmsg, bus);
+
++ s = kdbus_staging_new_kernel(bus, KDBUS_DST_ID_BROADCAST, 0,
++ extra_size, type);
++ if (IS_ERR(s))
++ return PTR_ERR(s);
++
++ s->notify->name_change.old_id.id = old_id;
++ s->notify->name_change.old_id.flags = old_flags;
++ s->notify->name_change.new_id.id = new_id;
++ s->notify->name_change.new_id.flags = new_flags;
++ memcpy(s->notify->name_change.name, name, name_len);
++
++ kdbus_notify_add_tail(s, bus);
+ return 0;
+}
+
+/**
-+ * kdbus_notify_id_change() - queue a notification about a unique ID change
-+ * @bus: Bus which queues the messages
-+ * @type: The type if the notification; KDBUS_ITEM_ID_ADD or
-+ * KDBUS_ITEM_ID_REMOVE
-+ * @id: The id of the connection that was added or removed
-+ * @flags: The flags to pass in the KDBUS_ITEM flags field
-+ *
-+ * Return: 0 on success, negative errno on failure.
-+ */
-+int kdbus_notify_id_change(struct kdbus_bus *bus, u64 type, u64 id, u64 flags)
-+{
-+ struct kdbus_kmsg *kmsg = NULL;
-+
-+ kmsg = kdbus_kmsg_new(bus, sizeof(struct kdbus_notify_id_change));
-+ if (IS_ERR(kmsg))
-+ return PTR_ERR(kmsg);
-+
-+ kmsg->msg.flags = KDBUS_MSG_SIGNAL;
-+ kmsg->msg.dst_id = KDBUS_DST_ID_BROADCAST;
-+ kmsg->msg.src_id = KDBUS_SRC_ID_KERNEL;
-+ kmsg->msg.payload_type = KDBUS_PAYLOAD_KERNEL;
-+ kmsg->notify_type = type;
-+
-+ switch (type) {
-+ case KDBUS_ITEM_ID_ADD:
-+ kmsg->notify_new_id = id;
-+ break;
-+
-+ case KDBUS_ITEM_ID_REMOVE:
-+ kmsg->notify_old_id = id;
-+ break;
-+
-+ default:
-+ BUG();
-+ }
++ * kdbus_notify_id_change() - queue a notification about a unique ID change
++ * @bus: Bus which queues the messages
++ * @type: The type if the notification; KDBUS_ITEM_ID_ADD or
++ * KDBUS_ITEM_ID_REMOVE
++ * @id: The id of the connection that was added or removed
++ * @flags: The flags to pass in the KDBUS_ITEM flags field
++ *
++ * Return: 0 on success, negative errno on failure.
++ */
++int kdbus_notify_id_change(struct kdbus_bus *bus, u64 type, u64 id, u64 flags)
++{
++ struct kdbus_staging *s;
++ size_t extra_size;
+
-+ kmsg->msg.items[0].type = type;
-+ kmsg->msg.items[0].id_change.id = id;
-+ kmsg->msg.items[0].id_change.flags = flags;
++ extra_size = sizeof(struct kdbus_notify_id_change);
++ s = kdbus_staging_new_kernel(bus, KDBUS_DST_ID_BROADCAST, 0,
++ extra_size, type);
++ if (IS_ERR(s))
++ return PTR_ERR(s);
+
-+ kdbus_notify_add_tail(kmsg, bus);
++ s->notify->id_change.id = id;
++ s->notify->id_change.flags = flags;
+
++ kdbus_notify_add_tail(s, bus);
+ return 0;
+}
+
@@ -19051,7 +21633,7 @@ index 0000000..e4a4542
+void kdbus_notify_flush(struct kdbus_bus *bus)
+{
+ LIST_HEAD(notify_list);
-+ struct kdbus_kmsg *kmsg, *tmp;
++ struct kdbus_staging *s, *tmp;
+
+ mutex_lock(&bus->notify_flush_lock);
+ down_read(&bus->name_registry->rwlock);
@@ -19060,25 +21642,23 @@ index 0000000..e4a4542
+ list_splice_init(&bus->notify_list, ¬ify_list);
+ spin_unlock(&bus->notify_lock);
+
-+ list_for_each_entry_safe(kmsg, tmp, ¬ify_list, notify_entry) {
-+ kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, NULL,
-+ KDBUS_ATTACH_TIMESTAMP);
-+
-+ if (kmsg->msg.dst_id != KDBUS_DST_ID_BROADCAST) {
++ list_for_each_entry_safe(s, tmp, ¬ify_list, notify_entry) {
++ if (s->msg->dst_id != KDBUS_DST_ID_BROADCAST) {
+ struct kdbus_conn *conn;
+
-+ conn = kdbus_bus_find_conn_by_id(bus, kmsg->msg.dst_id);
++ conn = kdbus_bus_find_conn_by_id(bus, s->msg->dst_id);
+ if (conn) {
-+ kdbus_bus_eavesdrop(bus, NULL, kmsg);
-+ kdbus_conn_entry_insert(NULL, conn, kmsg, NULL);
++ kdbus_bus_eavesdrop(bus, NULL, s);
++ kdbus_conn_entry_insert(NULL, conn, s, NULL,
++ NULL);
+ kdbus_conn_unref(conn);
+ }
+ } else {
-+ kdbus_bus_broadcast(bus, NULL, kmsg);
++ kdbus_bus_broadcast(bus, NULL, s);
+ }
+
-+ list_del(&kmsg->notify_entry);
-+ kdbus_kmsg_free(kmsg);
++ list_del(&s->notify_entry);
++ kdbus_staging_free(s);
+ }
+
+ up_read(&bus->name_registry->rwlock);
@@ -19091,11 +21671,11 @@ index 0000000..e4a4542
+ */
+void kdbus_notify_free(struct kdbus_bus *bus)
+{
-+ struct kdbus_kmsg *kmsg, *tmp;
++ struct kdbus_staging *s, *tmp;
+
-+ list_for_each_entry_safe(kmsg, tmp, &bus->notify_list, notify_entry) {
-+ list_del(&kmsg->notify_entry);
-+ kdbus_kmsg_free(kmsg);
++ list_for_each_entry_safe(s, tmp, &bus->notify_list, notify_entry) {
++ list_del(&s->notify_entry);
++ kdbus_staging_free(s);
+ }
+}
diff --git a/ipc/kdbus/notify.h b/ipc/kdbus/notify.h
@@ -19136,7 +21716,7 @@ index 0000000..03df464
+#endif
diff --git a/ipc/kdbus/policy.c b/ipc/kdbus/policy.c
new file mode 100644
-index 0000000..dd7fffa
+index 0000000..f2618e15
--- /dev/null
+++ b/ipc/kdbus/policy.c
@@ -0,0 +1,489 @@
@@ -19486,7 +22066,7 @@ index 0000000..dd7fffa
+ * In order to allow atomic replacement of rules, the function first removes
+ * all entries that have been created for the given owner previously.
+ *
-+ * Callers to this function must make sur that the owner is a custom
++ * Callers to this function must make sure that the owner is a custom
+ * endpoint, or if the endpoint is a default endpoint, then it must be
+ * either a policy holder or an activator.
+ *
@@ -19688,7 +22268,7 @@ index 0000000..15dd7bc
+#endif
diff --git a/ipc/kdbus/pool.c b/ipc/kdbus/pool.c
new file mode 100644
-index 0000000..45dcdea
+index 0000000..63ccd55
--- /dev/null
+++ b/ipc/kdbus/pool.c
@@ -0,0 +1,728 @@
@@ -19738,7 +22318,7 @@ index 0000000..45dcdea
+ * The receiver's buffer, managed as a pool of allocated and free
+ * slices containing the queued messages.
+ *
-+ * Messages sent with KDBUS_CMD_SEND are copied direcly by the
++ * Messages sent with KDBUS_CMD_SEND are copied directly by the
+ * sending process into the receiver's pool.
+ *
+ * Messages received with KDBUS_CMD_RECV just return the offset
@@ -20474,10 +23054,10 @@ index 0000000..a903821
+#endif
diff --git a/ipc/kdbus/queue.c b/ipc/kdbus/queue.c
new file mode 100644
-index 0000000..25bb3ad
+index 0000000..f9c44d7
--- /dev/null
+++ b/ipc/kdbus/queue.c
-@@ -0,0 +1,678 @@
+@@ -0,0 +1,363 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -20651,242 +23231,43 @@ index 0000000..25bb3ad
+
+/**
+ * kdbus_queue_entry_new() - allocate a queue entry
-+ * @conn_dst: destination connection
-+ * @kmsg: kmsg object the queue entry should track
-+ * @user: user to account message on (or NULL for kernel messages)
++ * @src: source connection, or NULL
++ * @dst: destination connection
++ * @s: staging object carrying the message
+ *
-+ * Allocates a queue entry based on a given kmsg and allocate space for
++ * Allocates a queue entry based on a given msg and allocate space for
+ * the message payload and the requested metadata in the connection's pool.
+ * The entry is not actually added to the queue's lists at this point.
+ *
+ * Return: the allocated entry on success, or an ERR_PTR on failures.
+ */
-+struct kdbus_queue_entry *kdbus_queue_entry_new(struct kdbus_conn *conn_dst,
-+ const struct kdbus_kmsg *kmsg,
-+ struct kdbus_user *user)
++struct kdbus_queue_entry *kdbus_queue_entry_new(struct kdbus_conn *src,
++ struct kdbus_conn *dst,
++ struct kdbus_staging *s)
+{
-+ struct kdbus_msg_resources *res = kmsg->res;
-+ const struct kdbus_msg *msg = &kmsg->msg;
+ struct kdbus_queue_entry *entry;
-+ size_t memfd_cnt = 0;
-+ struct kvec kvec[2];
-+ size_t meta_size;
-+ size_t msg_size;
-+ u64 payload_off;
-+ u64 size = 0;
-+ int ret = 0;
++ int ret;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return ERR_PTR(-ENOMEM);
+
+ INIT_LIST_HEAD(&entry->entry);
-+ entry->priority = msg->priority;
-+ entry->dst_name_id = kmsg->dst_name_id;
-+ entry->msg_res = kdbus_msg_resources_ref(res);
-+ entry->proc_meta = kdbus_meta_proc_ref(kmsg->proc_meta);
-+ entry->conn_meta = kdbus_meta_conn_ref(kmsg->conn_meta);
-+ entry->conn = kdbus_conn_ref(conn_dst);
-+
-+ if (kmsg->msg.src_id == KDBUS_SRC_ID_KERNEL)
-+ msg_size = msg->size;
-+ else
-+ msg_size = offsetof(struct kdbus_msg, items);
-+
-+ /* sum up the size of the needed slice */
-+ size = msg_size;
-+
-+ if (res) {
-+ size += res->vec_count *
-+ KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+
-+ if (res->memfd_count) {
-+ entry->memfd_offset =
-+ kcalloc(res->memfd_count, sizeof(size_t),
-+ GFP_KERNEL);
-+ if (!entry->memfd_offset) {
-+ ret = -ENOMEM;
-+ goto exit_free_entry;
-+ }
-+
-+ size += res->memfd_count *
-+ KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
-+ }
-+
-+ if (res->fds_count)
-+ size += KDBUS_ITEM_SIZE(sizeof(int) * res->fds_count);
-+
-+ if (res->dst_name)
-+ size += KDBUS_ITEM_SIZE(strlen(res->dst_name) + 1);
-+ }
-+
-+ /*
-+ * Remember the offset of the metadata part, so we can override
-+ * this part later during kdbus_queue_entry_install().
-+ */
-+ entry->meta_offset = size;
-+
-+ if (entry->proc_meta || entry->conn_meta) {
-+ entry->attach_flags =
-+ atomic64_read(&conn_dst->attach_flags_recv);
-+
-+ ret = kdbus_meta_export_prepare(entry->proc_meta,
-+ entry->conn_meta,
-+ &entry->attach_flags,
-+ &meta_size);
-+ if (ret < 0)
-+ goto exit_free_entry;
-+
-+ size += meta_size;
-+ }
-+
-+ payload_off = size;
-+ size += kmsg->pool_size;
-+ size = KDBUS_ALIGN8(size);
-+
-+ ret = kdbus_conn_quota_inc(conn_dst, user, size,
-+ res ? res->fds_count : 0);
-+ if (ret < 0)
-+ goto exit_free_entry;
++ entry->priority = s->msg->priority;
++ entry->conn = kdbus_conn_ref(dst);
++ entry->gaps = kdbus_gaps_ref(s->gaps);
+
-+ entry->slice = kdbus_pool_slice_alloc(conn_dst->pool, size, true);
++ entry->slice = kdbus_staging_emit(s, src, dst);
+ if (IS_ERR(entry->slice)) {
+ ret = PTR_ERR(entry->slice);
+ entry->slice = NULL;
-+ kdbus_conn_quota_dec(conn_dst, user, size,
-+ res ? res->fds_count : 0);
-+ goto exit_free_entry;
-+ }
-+
-+ /* we accounted for exactly 'size' bytes, make sure it didn't grow */
-+ WARN_ON(kdbus_pool_slice_size(entry->slice) != size);
-+ entry->user = kdbus_user_ref(user);
-+
-+ /* copy message header */
-+ kvec[0].iov_base = (char *)msg;
-+ kvec[0].iov_len = msg_size;
-+
-+ ret = kdbus_pool_slice_copy_kvec(entry->slice, 0, kvec, 1, msg_size);
-+ if (ret < 0)
-+ goto exit_free_entry;
-+
-+ /* 'size' will now track the write position */
-+ size = msg_size;
-+
-+ /* create message payload items */
-+ if (res) {
-+ size_t dst_name_len = 0;
-+ unsigned int i;
-+ size_t sz = 0;
-+
-+ if (res->dst_name) {
-+ dst_name_len = strlen(res->dst_name) + 1;
-+ sz += KDBUS_ITEM_SIZE(dst_name_len);
-+ }
-+
-+ for (i = 0; i < res->data_count; ++i) {
-+ struct kdbus_vec v;
-+ struct kdbus_memfd m;
-+
-+ switch (res->data[i].type) {
-+ case KDBUS_MSG_DATA_VEC:
-+ sz += KDBUS_ITEM_SIZE(sizeof(v));
-+ break;
-+
-+ case KDBUS_MSG_DATA_MEMFD:
-+ sz += KDBUS_ITEM_SIZE(sizeof(m));
-+ break;
-+ }
-+ }
-+
-+ if (sz) {
-+ struct kdbus_item *items, *item;
-+
-+ items = kmalloc(sz, GFP_KERNEL);
-+ if (!items) {
-+ ret = -ENOMEM;
-+ goto exit_free_entry;
-+ }
-+
-+ item = items;
-+
-+ if (res->dst_name)
-+ item = kdbus_item_set(item, KDBUS_ITEM_DST_NAME,
-+ res->dst_name,
-+ dst_name_len);
-+
-+ for (i = 0; i < res->data_count; ++i) {
-+ struct kdbus_msg_data *d = res->data + i;
-+ struct kdbus_memfd m = {};
-+ struct kdbus_vec v = {};
-+
-+ switch (d->type) {
-+ case KDBUS_MSG_DATA_VEC:
-+ v.size = d->size;
-+ v.offset = d->vec.off;
-+ if (v.offset != ~0ULL)
-+ v.offset += payload_off;
-+
-+ item = kdbus_item_set(item,
-+ KDBUS_ITEM_PAYLOAD_OFF,
-+ &v, sizeof(v));
-+ break;
-+
-+ case KDBUS_MSG_DATA_MEMFD:
-+ /*
-+ * Remember the location of memfds, so
-+ * we can override the content from
-+ * kdbus_queue_entry_install().
-+ */
-+ entry->memfd_offset[memfd_cnt++] =
-+ msg_size +
-+ (char *)item - (char *)items +
-+ offsetof(struct kdbus_item,
-+ memfd);
-+
-+ item = kdbus_item_set(item,
-+ KDBUS_ITEM_PAYLOAD_MEMFD,
-+ &m, sizeof(m));
-+ break;
-+ }
-+ }
-+
-+ kvec[0].iov_base = items;
-+ kvec[0].iov_len = sz;
-+
-+ ret = kdbus_pool_slice_copy_kvec(entry->slice, size,
-+ kvec, 1, sz);
-+ kfree(items);
-+
-+ if (ret < 0)
-+ goto exit_free_entry;
-+
-+ size += sz;
-+ }
-+
-+ /*
-+ * Remember the location of the FD part, so we can override the
-+ * content in kdbus_queue_entry_install().
-+ */
-+ if (res->fds_count) {
-+ entry->fds_offset = size;
-+ size += KDBUS_ITEM_SIZE(sizeof(int) * res->fds_count);
-+ }
-+ }
-+
-+ /* finally, copy over the actual message payload */
-+ if (kmsg->iov_count) {
-+ ret = kdbus_pool_slice_copy_iovec(entry->slice, payload_off,
-+ kmsg->iov,
-+ kmsg->iov_count,
-+ kmsg->pool_size);
-+ if (ret < 0)
-+ goto exit_free_entry;
++ goto error;
+ }
+
++ entry->user = src ? kdbus_user_ref(src->user) : NULL;
+ return entry;
+
-+exit_free_entry:
++error:
+ kdbus_queue_entry_free(entry);
+ return ERR_PTR(ret);
+}
@@ -20911,17 +23292,13 @@ index 0000000..25bb3ad
+ if (entry->slice) {
+ kdbus_conn_quota_dec(entry->conn, entry->user,
+ kdbus_pool_slice_size(entry->slice),
-+ entry->msg_res ?
-+ entry->msg_res->fds_count : 0);
++ entry->gaps ? entry->gaps->n_fds : 0);
+ kdbus_pool_slice_release(entry->slice);
-+ kdbus_user_unref(entry->user);
+ }
+
-+ kdbus_msg_resources_unref(entry->msg_res);
-+ kdbus_meta_conn_unref(entry->conn_meta);
-+ kdbus_meta_proc_unref(entry->proc_meta);
++ kdbus_user_unref(entry->user);
++ kdbus_gaps_unref(entry->gaps);
+ kdbus_conn_unref(entry->conn);
-+ kfree(entry->memfd_offset);
+ kfree(entry);
+}
+
@@ -20932,134 +23309,22 @@ index 0000000..25bb3ad
+ * @return_flags: Pointer to store the return flags for userspace
+ * @install_fds: Whether or not to install associated file descriptors
+ *
-+ * This function will create a slice to transport the message header, the
-+ * metadata items and other items for information stored in @entry, and
-+ * store it as entry->slice.
-+ *
-+ * If @install_fds is %true, file descriptors will as well be installed.
-+ * This function must always be called from the task context of the receiver.
-+ *
+ * Return: 0 on success.
+ */
+int kdbus_queue_entry_install(struct kdbus_queue_entry *entry,
+ u64 *return_flags, bool install_fds)
+{
-+ u64 msg_size = entry->meta_offset;
-+ struct kdbus_conn *conn_dst = entry->conn;
-+ struct kdbus_msg_resources *res;
+ bool incomplete_fds = false;
-+ struct kvec kvec[2];
-+ size_t memfds = 0;
-+ int i, ret;
-+
-+ lockdep_assert_held(&conn_dst->lock);
-+
-+ if (entry->proc_meta || entry->conn_meta) {
-+ size_t meta_size;
-+
-+ ret = kdbus_meta_export(entry->proc_meta,
-+ entry->conn_meta,
-+ entry->attach_flags,
-+ entry->slice,
-+ entry->meta_offset,
-+ &meta_size);
-+ if (ret < 0)
-+ return ret;
-+
-+ msg_size += meta_size;
-+ }
++ int ret;
+
-+ /* Update message size at offset 0 */
-+ kvec[0].iov_base = &msg_size;
-+ kvec[0].iov_len = sizeof(msg_size);
++ lockdep_assert_held(&entry->conn->lock);
+
-+ ret = kdbus_pool_slice_copy_kvec(entry->slice, 0, kvec, 1,
-+ sizeof(msg_size));
++ ret = kdbus_gaps_install(entry->gaps, entry->slice, &incomplete_fds);
+ if (ret < 0)
+ return ret;
+
-+ res = entry->msg_res;
-+
-+ if (!res)
-+ return 0;
-+
-+ if (res->fds_count) {
-+ struct kdbus_item_header hdr;
-+ size_t off;
-+ int *fds;
-+
-+ fds = kmalloc_array(res->fds_count, sizeof(int), GFP_KERNEL);
-+ if (!fds)
-+ return -ENOMEM;
-+
-+ for (i = 0; i < res->fds_count; i++) {
-+ if (install_fds) {
-+ fds[i] = get_unused_fd_flags(O_CLOEXEC);
-+ if (fds[i] >= 0)
-+ fd_install(fds[i],
-+ get_file(res->fds[i]));
-+ else
-+ incomplete_fds = true;
-+ } else {
-+ fds[i] = -1;
-+ }
-+ }
-+
-+ off = entry->fds_offset;
-+
-+ hdr.type = KDBUS_ITEM_FDS;
-+ hdr.size = KDBUS_ITEM_HEADER_SIZE +
-+ sizeof(int) * res->fds_count;
-+
-+ kvec[0].iov_base = &hdr;
-+ kvec[0].iov_len = sizeof(hdr);
-+
-+ kvec[1].iov_base = fds;
-+ kvec[1].iov_len = sizeof(int) * res->fds_count;
-+
-+ ret = kdbus_pool_slice_copy_kvec(entry->slice, off,
-+ kvec, 2, hdr.size);
-+ kfree(fds);
-+
-+ if (ret < 0)
-+ return ret;
-+ }
-+
-+ for (i = 0; i < res->data_count; ++i) {
-+ struct kdbus_msg_data *d = res->data + i;
-+ struct kdbus_memfd m;
-+
-+ if (d->type != KDBUS_MSG_DATA_MEMFD)
-+ continue;
-+
-+ m.start = d->memfd.start;
-+ m.size = d->size;
-+ m.fd = -1;
-+
-+ if (install_fds) {
-+ m.fd = get_unused_fd_flags(O_CLOEXEC);
-+ if (m.fd < 0) {
-+ m.fd = -1;
-+ incomplete_fds = true;
-+ } else {
-+ fd_install(m.fd,
-+ get_file(d->memfd.file));
-+ }
-+ }
-+
-+ kvec[0].iov_base = &m;
-+ kvec[0].iov_len = sizeof(m);
-+
-+ ret = kdbus_pool_slice_copy_kvec(entry->slice,
-+ entry->memfd_offset[memfds++],
-+ kvec, 1, sizeof(m));
-+ if (ret < 0)
-+ return ret;
-+ }
-+
+ if (incomplete_fds)
+ *return_flags |= KDBUS_RECV_RETURN_INCOMPLETE_FDS;
-+
+ return 0;
+}
+
@@ -21123,7 +23388,7 @@ index 0000000..25bb3ad
+ return 0;
+
+ size = kdbus_pool_slice_size(e->slice);
-+ fds = e->msg_res ? e->msg_res->fds_count : 0;
++ fds = e->gaps ? e->gaps->n_fds : 0;
+
+ ret = kdbus_conn_quota_inc(dst, e->user, size, fds);
+ if (ret < 0)
@@ -21158,10 +23423,10 @@ index 0000000..25bb3ad
+}
diff --git a/ipc/kdbus/queue.h b/ipc/kdbus/queue.h
new file mode 100644
-index 0000000..7f2db96
+index 0000000..bf686d1
--- /dev/null
+++ b/ipc/kdbus/queue.h
-@@ -0,0 +1,92 @@
+@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -21179,6 +23444,13 @@ index 0000000..7f2db96
+#ifndef __KDBUS_QUEUE_H
+#define __KDBUS_QUEUE_H
+
++#include <linux/list.h>
++#include <linux/rbtree.h>
++
++struct kdbus_conn;
++struct kdbus_pool_slice;
++struct kdbus_reply;
++struct kdbus_staging;
+struct kdbus_user;
+
+/**
@@ -21199,52 +23471,37 @@ index 0000000..7f2db96
+ * @entry: Entry in the connection's list
+ * @prio_node: Entry in the priority queue tree
+ * @prio_entry: Queue tree node entry in the list of one priority
-+ * @slice: Slice in the receiver's pool for the message
-+ * @attach_flags: Attach flags used during slice allocation
-+ * @meta_offset: Offset of first metadata item in slice
-+ * @fds_offset: Offset of FD item in slice
-+ * @memfd_offset: Array of slice-offsets for all memfd items
+ * @priority: Message priority
+ * @dst_name_id: The sequence number of the name this message is
+ * addressed to, 0 for messages sent to an ID
-+ * @msg_res: Message resources
-+ * @proc_meta: Process metadata, captured at message arrival
-+ * @conn_meta: Connection metadata, captured at message arrival
-+ * @reply: The reply block if a reply to this message is expected
++ * @conn: Connection this entry is queued on
++ * @gaps: Gaps object to fill message gaps at RECV time
+ * @user: User used for accounting
++ * @slice: Slice in the receiver's pool for the message
++ * @reply: The reply block if a reply to this message is expected
+ */
+struct kdbus_queue_entry {
+ struct list_head entry;
+ struct rb_node prio_node;
+ struct list_head prio_entry;
+
-+ struct kdbus_pool_slice *slice;
-+
-+ u64 attach_flags;
-+ size_t meta_offset;
-+ size_t fds_offset;
-+ size_t *memfd_offset;
-+
+ s64 priority;
+ u64 dst_name_id;
+
-+ struct kdbus_msg_resources *msg_res;
-+ struct kdbus_meta_proc *proc_meta;
-+ struct kdbus_meta_conn *conn_meta;
-+ struct kdbus_reply *reply;
+ struct kdbus_conn *conn;
++ struct kdbus_gaps *gaps;
+ struct kdbus_user *user;
++ struct kdbus_pool_slice *slice;
++ struct kdbus_reply *reply;
+};
+
-+struct kdbus_kmsg;
-+
+void kdbus_queue_init(struct kdbus_queue *queue);
+struct kdbus_queue_entry *kdbus_queue_peek(struct kdbus_queue *queue,
+ s64 priority, bool use_priority);
+
-+struct kdbus_queue_entry *kdbus_queue_entry_new(struct kdbus_conn *conn_dst,
-+ const struct kdbus_kmsg *kmsg,
-+ struct kdbus_user *user);
++struct kdbus_queue_entry *kdbus_queue_entry_new(struct kdbus_conn *src,
++ struct kdbus_conn *dst,
++ struct kdbus_staging *s);
+void kdbus_queue_entry_free(struct kdbus_queue_entry *entry);
+int kdbus_queue_entry_install(struct kdbus_queue_entry *entry,
+ u64 *return_flags, bool install_fds);
@@ -21827,6 +24084,463 @@ index 0000000..5297166
+size_t kdbus_kvec_pad(struct kvec *kvec, u64 *len);
+
+#endif
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 0ceb386..eddf1ed 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -4331,20 +4331,20 @@ static void ring_buffer_attach(struct perf_event *event,
+ WARN_ON_ONCE(event->rcu_pending);
+
+ old_rb = event->rb;
++ event->rcu_batches = get_state_synchronize_rcu();
++ event->rcu_pending = 1;
++
+ spin_lock_irqsave(&old_rb->event_lock, flags);
+ list_del_rcu(&event->rb_entry);
+ spin_unlock_irqrestore(&old_rb->event_lock, flags);
++ }
+
+- event->rcu_batches = get_state_synchronize_rcu();
+- event->rcu_pending = 1;
++ if (event->rcu_pending && rb) {
++ cond_synchronize_rcu(event->rcu_batches);
++ event->rcu_pending = 0;
+ }
+
+ if (rb) {
+- if (event->rcu_pending) {
+- cond_synchronize_rcu(event->rcu_batches);
+- event->rcu_pending = 0;
+- }
+-
+ spin_lock_irqsave(&rb->event_lock, flags);
+ list_add_rcu(&event->rb_entry, &rb->event_list);
+ spin_unlock_irqrestore(&rb->event_lock, flags);
+diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
+index 8d423bc..a9a4a1b 100644
+--- a/net/bridge/br_ioctl.c
++++ b/net/bridge/br_ioctl.c
+@@ -247,7 +247,9 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+ if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN))
+ return -EPERM;
+
++ spin_lock_bh(&br->lock);
+ br_stp_set_bridge_priority(br, args[1]);
++ spin_unlock_bh(&br->lock);
+ return 0;
+
+ case BRCTL_SET_PORT_PRIORITY:
+diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
+index 7832d07..4114687 100644
+--- a/net/bridge/br_stp_if.c
++++ b/net/bridge/br_stp_if.c
+@@ -243,13 +243,12 @@ bool br_stp_recalculate_bridge_id(struct net_bridge *br)
+ return true;
+ }
+
+-/* Acquires and releases bridge lock */
++/* called under bridge lock */
+ void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio)
+ {
+ struct net_bridge_port *p;
+ int wasroot;
+
+- spin_lock_bh(&br->lock);
+ wasroot = br_is_root_bridge(br);
+
+ list_for_each_entry(p, &br->port_list, list) {
+@@ -267,7 +266,6 @@ void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio)
+ br_port_state_selection(br);
+ if (br_is_root_bridge(br) && !wasroot)
+ br_become_root_bridge(br);
+- spin_unlock_bh(&br->lock);
+ }
+
+ /* called under bridge lock */
+diff --git a/net/can/af_can.c b/net/can/af_can.c
+index 689c818..32d710e 100644
+--- a/net/can/af_can.c
++++ b/net/can/af_can.c
+@@ -310,12 +310,8 @@ int can_send(struct sk_buff *skb, int loop)
+ return err;
+ }
+
+- if (newskb) {
+- if (!(newskb->tstamp.tv64))
+- __net_timestamp(newskb);
+-
++ if (newskb)
+ netif_rx_ni(newskb);
+- }
+
+ /* update statistics */
+ can_stats.tx_frames++;
+diff --git a/net/core/neighbour.c b/net/core/neighbour.c
+index 2237c1b..3de6542 100644
+--- a/net/core/neighbour.c
++++ b/net/core/neighbour.c
+@@ -957,8 +957,6 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
+ rc = 0;
+ if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
+ goto out_unlock_bh;
+- if (neigh->dead)
+- goto out_dead;
+
+ if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
+ if (NEIGH_VAR(neigh->parms, MCAST_PROBES) +
+@@ -1015,13 +1013,6 @@ out_unlock_bh:
+ write_unlock(&neigh->lock);
+ local_bh_enable();
+ return rc;
+-
+-out_dead:
+- if (neigh->nud_state & NUD_STALE)
+- goto out_unlock_bh;
+- write_unlock_bh(&neigh->lock);
+- kfree_skb(skb);
+- return 1;
+ }
+ EXPORT_SYMBOL(__neigh_event_send);
+
+@@ -1085,8 +1076,6 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
+ if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
+ (old & (NUD_NOARP | NUD_PERMANENT)))
+ goto out;
+- if (neigh->dead)
+- goto out;
+
+ if (!(new & NUD_VALID)) {
+ neigh_del_timer(neigh);
+@@ -1236,8 +1225,6 @@ EXPORT_SYMBOL(neigh_update);
+ */
+ void __neigh_set_probe_once(struct neighbour *neigh)
+ {
+- if (neigh->dead)
+- return;
+ neigh->updated = jiffies;
+ if (!(neigh->nud_state & NUD_FAILED))
+ return;
+diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
+index a5aa54e..8b47a4d 100644
+--- a/net/ipv4/af_inet.c
++++ b/net/ipv4/af_inet.c
+@@ -228,8 +228,6 @@ int inet_listen(struct socket *sock, int backlog)
+ err = 0;
+ if (err)
+ goto out;
+-
+- tcp_fastopen_init_key_once(true);
+ }
+ err = inet_csk_listen_start(sk, backlog);
+ if (err)
+diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
+index 6ddde89..7cfb089 100644
+--- a/net/ipv4/ip_sockglue.c
++++ b/net/ipv4/ip_sockglue.c
+@@ -432,15 +432,6 @@ void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 inf
+ kfree_skb(skb);
+ }
+
+-/* For some errors we have valid addr_offset even with zero payload and
+- * zero port. Also, addr_offset should be supported if port is set.
+- */
+-static inline bool ipv4_datagram_support_addr(struct sock_exterr_skb *serr)
+-{
+- return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP ||
+- serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port;
+-}
+-
+ /* IPv4 supports cmsg on all imcp errors and some timestamps
+ *
+ * Timestamp code paths do not initialize the fields expected by cmsg:
+@@ -507,7 +498,7 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
+
+ serr = SKB_EXT_ERR(skb);
+
+- if (sin && ipv4_datagram_support_addr(serr)) {
++ if (sin && serr->port) {
+ sin->sin_family = AF_INET;
+ sin->sin_addr.s_addr = *(__be32 *)(skb_network_header(skb) +
+ serr->addr_offset);
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index bb2ce74..f1377f2 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -2545,13 +2545,10 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
+
+ case TCP_FASTOPEN:
+ if (val >= 0 && ((1 << sk->sk_state) & (TCPF_CLOSE |
+- TCPF_LISTEN))) {
+- tcp_fastopen_init_key_once(true);
+-
++ TCPF_LISTEN)))
+ err = fastopen_init_queue(sk, val);
+- } else {
++ else
+ err = -EINVAL;
+- }
+ break;
+ case TCP_TIMESTAMP:
+ if (!tp->repair)
+diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c
+index f9c0fb8..46b087a 100644
+--- a/net/ipv4/tcp_fastopen.c
++++ b/net/ipv4/tcp_fastopen.c
+@@ -78,6 +78,8 @@ static bool __tcp_fastopen_cookie_gen(const void *path,
+ struct tcp_fastopen_context *ctx;
+ bool ok = false;
+
++ tcp_fastopen_init_key_once(true);
++
+ rcu_read_lock();
+ ctx = rcu_dereference(tcp_fastopen_ctx);
+ if (ctx) {
+diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
+index 62d908e..762a58c 100644
+--- a/net/ipv6/datagram.c
++++ b/net/ipv6/datagram.c
+@@ -325,16 +325,6 @@ void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu)
+ kfree_skb(skb);
+ }
+
+-/* For some errors we have valid addr_offset even with zero payload and
+- * zero port. Also, addr_offset should be supported if port is set.
+- */
+-static inline bool ipv6_datagram_support_addr(struct sock_exterr_skb *serr)
+-{
+- return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6 ||
+- serr->ee.ee_origin == SO_EE_ORIGIN_ICMP ||
+- serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port;
+-}
+-
+ /* IPv6 supports cmsg on all origins aside from SO_EE_ORIGIN_LOCAL.
+ *
+ * At one point, excluding local errors was a quick test to identify icmp/icmp6
+@@ -399,7 +389,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
+
+ serr = SKB_EXT_ERR(skb);
+
+- if (sin && ipv6_datagram_support_addr(serr)) {
++ if (sin && serr->port) {
+ const unsigned char *nh = skb_network_header(skb);
+ sin->sin6_family = AF_INET6;
+ sin->sin6_flowinfo = 0;
+diff --git a/net/mac80211/key.c b/net/mac80211/key.c
+index 81e9785..a907f2d 100644
+--- a/net/mac80211/key.c
++++ b/net/mac80211/key.c
+@@ -66,15 +66,12 @@ update_vlan_tailroom_need_count(struct ieee80211_sub_if_data *sdata, int delta)
+ if (sdata->vif.type != NL80211_IFTYPE_AP)
+ return;
+
+- /* crypto_tx_tailroom_needed_cnt is protected by this */
+- assert_key_lock(sdata->local);
+-
+- rcu_read_lock();
++ mutex_lock(&sdata->local->mtx);
+
+- list_for_each_entry_rcu(vlan, &sdata->u.ap.vlans, u.vlan.list)
++ list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
+ vlan->crypto_tx_tailroom_needed_cnt += delta;
+
+- rcu_read_unlock();
++ mutex_unlock(&sdata->local->mtx);
+ }
+
+ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
+@@ -98,8 +95,6 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
+ * http://mid.gmane.org/1308590980.4322.19.camel@jlt3.sipsolutions.net
+ */
+
+- assert_key_lock(sdata->local);
+-
+ update_vlan_tailroom_need_count(sdata, 1);
+
+ if (!sdata->crypto_tx_tailroom_needed_cnt++) {
+@@ -114,8 +109,6 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
+ static void decrease_tailroom_need_count(struct ieee80211_sub_if_data *sdata,
+ int delta)
+ {
+- assert_key_lock(sdata->local);
+-
+ WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt < delta);
+
+ update_vlan_tailroom_need_count(sdata, -delta);
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index fe1610d..b5989c6 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -1272,6 +1272,16 @@ static void packet_sock_destruct(struct sock *sk)
+ sk_refcnt_debug_dec(sk);
+ }
+
++static int fanout_rr_next(struct packet_fanout *f, unsigned int num)
++{
++ int x = atomic_read(&f->rr_cur) + 1;
++
++ if (x >= num)
++ x = 0;
++
++ return x;
++}
++
+ static unsigned int fanout_demux_hash(struct packet_fanout *f,
+ struct sk_buff *skb,
+ unsigned int num)
+@@ -1283,9 +1293,13 @@ static unsigned int fanout_demux_lb(struct packet_fanout *f,
+ struct sk_buff *skb,
+ unsigned int num)
+ {
+- unsigned int val = atomic_inc_return(&f->rr_cur);
++ int cur, old;
+
+- return val % num;
++ cur = atomic_read(&f->rr_cur);
++ while ((old = atomic_cmpxchg(&f->rr_cur, cur,
++ fanout_rr_next(f, num))) != cur)
++ cur = old;
++ return cur;
+ }
+
+ static unsigned int fanout_demux_cpu(struct packet_fanout *f,
+@@ -1339,7 +1353,7 @@ static int packet_rcv_fanout(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt, struct net_device *orig_dev)
+ {
+ struct packet_fanout *f = pt->af_packet_priv;
+- unsigned int num = READ_ONCE(f->num_members);
++ unsigned int num = f->num_members;
+ struct packet_sock *po;
+ unsigned int idx;
+
+diff --git a/net/sctp/output.c b/net/sctp/output.c
+index abe7c2d..fc5e45b 100644
+--- a/net/sctp/output.c
++++ b/net/sctp/output.c
+@@ -599,9 +599,7 @@ out:
+ return err;
+ no_route:
+ kfree_skb(nskb);
+-
+- if (asoc)
+- IP_INC_STATS(sock_net(asoc->base.sk), IPSTATS_MIB_OUTNOROUTES);
++ IP_INC_STATS(sock_net(asoc->base.sk), IPSTATS_MIB_OUTNOROUTES);
+
+ /* FIXME: Returning the 'err' will effect all the associations
+ * associated with a socket, although only one of the paths of the
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index 5f6c4e6..f09de7f 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -1528,10 +1528,8 @@ static void sctp_close(struct sock *sk, long timeout)
+
+ /* Supposedly, no process has access to the socket, but
+ * the net layers still may.
+- * Also, sctp_destroy_sock() needs to be called with addr_wq_lock
+- * held and that should be grabbed before socket lock.
+ */
+- spin_lock_bh(&net->sctp.addr_wq_lock);
++ local_bh_disable();
+ bh_lock_sock(sk);
+
+ /* Hold the sock, since sk_common_release() will put sock_put()
+@@ -1541,7 +1539,7 @@ static void sctp_close(struct sock *sk, long timeout)
+ sk_common_release(sk);
+
+ bh_unlock_sock(sk);
+- spin_unlock_bh(&net->sctp.addr_wq_lock);
++ local_bh_enable();
+
+ sock_put(sk);
+
+@@ -3582,7 +3580,6 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
+ if ((val && sp->do_auto_asconf) || (!val && !sp->do_auto_asconf))
+ return 0;
+
+- spin_lock_bh(&sock_net(sk)->sctp.addr_wq_lock);
+ if (val == 0 && sp->do_auto_asconf) {
+ list_del(&sp->auto_asconf_list);
+ sp->do_auto_asconf = 0;
+@@ -3591,7 +3588,6 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
+ &sock_net(sk)->sctp.auto_asconf_splist);
+ sp->do_auto_asconf = 1;
+ }
+- spin_unlock_bh(&sock_net(sk)->sctp.addr_wq_lock);
+ return 0;
+ }
+
+@@ -4125,28 +4121,18 @@ static int sctp_init_sock(struct sock *sk)
+ local_bh_disable();
+ percpu_counter_inc(&sctp_sockets_allocated);
+ sock_prot_inuse_add(net, sk->sk_prot, 1);
+-
+- /* Nothing can fail after this block, otherwise
+- * sctp_destroy_sock() will be called without addr_wq_lock held
+- */
+ if (net->sctp.default_auto_asconf) {
+- spin_lock(&sock_net(sk)->sctp.addr_wq_lock);
+ list_add_tail(&sp->auto_asconf_list,
+ &net->sctp.auto_asconf_splist);
+ sp->do_auto_asconf = 1;
+- spin_unlock(&sock_net(sk)->sctp.addr_wq_lock);
+- } else {
++ } else
+ sp->do_auto_asconf = 0;
+- }
+-
+ local_bh_enable();
+
+ return 0;
+ }
+
+-/* Cleanup any SCTP per socket resources. Must be called with
+- * sock_net(sk)->sctp.addr_wq_lock held if sp->do_auto_asconf is true
+- */
++/* Cleanup any SCTP per socket resources. */
+ static void sctp_destroy_sock(struct sock *sk)
+ {
+ struct sctp_sock *sp;
+@@ -7209,19 +7195,6 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
+ newinet->mc_list = NULL;
+ }
+
+-static inline void sctp_copy_descendant(struct sock *sk_to,
+- const struct sock *sk_from)
+-{
+- int ancestor_size = sizeof(struct inet_sock) +
+- sizeof(struct sctp_sock) -
+- offsetof(struct sctp_sock, auto_asconf_list);
+-
+- if (sk_from->sk_family == PF_INET6)
+- ancestor_size += sizeof(struct ipv6_pinfo);
+-
+- __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
+-}
+-
+ /* Populate the fields of the newsk from the oldsk and migrate the assoc
+ * and its messages to the newsk.
+ */
+@@ -7236,6 +7209,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
+ struct sk_buff *skb, *tmp;
+ struct sctp_ulpevent *event;
+ struct sctp_bind_hashbucket *head;
++ struct list_head tmplist;
+
+ /* Migrate socket buffer sizes and all the socket level options to the
+ * new socket.
+@@ -7243,7 +7217,12 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
+ newsk->sk_sndbuf = oldsk->sk_sndbuf;
+ newsk->sk_rcvbuf = oldsk->sk_rcvbuf;
+ /* Brute force copy old sctp opt. */
+- sctp_copy_descendant(newsk, oldsk);
++ if (oldsp->do_auto_asconf) {
++ memcpy(&tmplist, &newsp->auto_asconf_list, sizeof(tmplist));
++ inet_sk_copy_descendant(newsk, oldsk);
++ memcpy(&newsp->auto_asconf_list, &tmplist, sizeof(tmplist));
++ } else
++ inet_sk_copy_descendant(newsk, oldsk);
+
+ /* Restore the ep value that was overwritten with the above structure
+ * copy.
diff --git a/samples/Kconfig b/samples/Kconfig
index 224ebb4..a4c6b2f 100644
--- a/samples/Kconfig
@@ -23349,6 +26063,39 @@ index 0000000..c3ba958
+}
+
+#endif /* libc sanity check */
+diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
+index 212070e..7dade28 100644
+--- a/security/selinux/hooks.c
++++ b/security/selinux/hooks.c
+@@ -403,7 +403,6 @@ static int selinux_is_sblabel_mnt(struct super_block *sb)
+ return sbsec->behavior == SECURITY_FS_USE_XATTR ||
+ sbsec->behavior == SECURITY_FS_USE_TRANS ||
+ sbsec->behavior == SECURITY_FS_USE_TASK ||
+- sbsec->behavior == SECURITY_FS_USE_NATIVE ||
+ /* Special handling. Genfs but also in-core setxattr handler */
+ !strcmp(sb->s_type->name, "sysfs") ||
+ !strcmp(sb->s_type->name, "pstore") ||
+diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
+index 98cfc38..10df572 100644
+--- a/tools/build/Makefile.build
++++ b/tools/build/Makefile.build
+@@ -94,12 +94,12 @@ obj-y := $(patsubst %/, %/$(obj)-in.o, $(obj-y))
+ subdir-obj-y := $(filter %/$(obj)-in.o, $(obj-y))
+
+ # '$(OUTPUT)/dir' prefix to all objects
+-objprefix := $(subst ./,,$(OUTPUT)$(dir)/)
+-obj-y := $(addprefix $(objprefix),$(obj-y))
+-subdir-obj-y := $(addprefix $(objprefix),$(subdir-obj-y))
++prefix := $(subst ./,,$(OUTPUT)$(dir)/)
++obj-y := $(addprefix $(prefix),$(obj-y))
++subdir-obj-y := $(addprefix $(prefix),$(subdir-obj-y))
+
+ # Final '$(obj)-in.o' object
+-in-target := $(objprefix)$(obj)-in.o
++in-target := $(prefix)$(obj)-in.o
+
+ PHONY += $(subdir-y)
+
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 95abddc..b57100c 100644
--- a/tools/testing/selftests/Makefile
@@ -23546,10 +26293,10 @@ index 0000000..ed28cca
+const char *enum_PAYLOAD(long long id);
diff --git a/tools/testing/selftests/kdbus/kdbus-test.c b/tools/testing/selftests/kdbus/kdbus-test.c
new file mode 100644
-index 0000000..294e82a
+index 0000000..db732e5
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-test.c
-@@ -0,0 +1,900 @@
+@@ -0,0 +1,899 @@
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
@@ -23851,7 +26598,6 @@ index 0000000..294e82a
+
+ ret = kdbus_create_bus(env->control_fd,
+ args->busname ?: n,
-+ _KDBUS_ATTACH_ALL,
+ _KDBUS_ATTACH_ALL, &s);
+ free(n);
+ ASSERT_RETURN(ret == 0);
@@ -24541,10 +27287,10 @@ index 0000000..a5c6ae8
+#endif /* _TEST_KDBUS_H_ */
diff --git a/tools/testing/selftests/kdbus/kdbus-util.c b/tools/testing/selftests/kdbus/kdbus-util.c
new file mode 100644
-index 0000000..29a0cb1
+index 0000000..a5e54ca
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-util.c
-@@ -0,0 +1,1617 @@
+@@ -0,0 +1,1611 @@
+/*
+ * Copyright (C) 2013-2015 Daniel Mack
+ * Copyright (C) 2013-2015 Kay Sievers
@@ -24661,8 +27407,7 @@ index 0000000..29a0cb1
+}
+
+int kdbus_create_bus(int control_fd, const char *name,
-+ uint64_t req_meta, uint64_t owner_meta,
-+ char **path)
++ uint64_t owner_meta, char **path)
+{
+ struct {
+ struct kdbus_cmd cmd;
@@ -24674,12 +27419,12 @@ index 0000000..29a0cb1
+ struct kdbus_bloom_parameter bloom;
+ } bp;
+
-+ /* required and owner metadata items */
++ /* owner metadata items */
+ struct {
+ uint64_t size;
+ uint64_t type;
+ uint64_t flags;
-+ } attach[2];
++ } attach;
+
+ /* name item */
+ struct {
@@ -24699,13 +27444,9 @@ index 0000000..29a0cb1
+ snprintf(bus_make.name.str, sizeof(bus_make.name.str),
+ "%u-%s", getuid(), name);
+
-+ bus_make.attach[0].type = KDBUS_ITEM_ATTACH_FLAGS_RECV;
-+ bus_make.attach[0].size = sizeof(bus_make.attach[0]);
-+ bus_make.attach[0].flags = req_meta;
-+
-+ bus_make.attach[1].type = KDBUS_ITEM_ATTACH_FLAGS_SEND;
-+ bus_make.attach[1].size = sizeof(bus_make.attach[0]);
-+ bus_make.attach[1].flags = owner_meta;
++ bus_make.attach.type = KDBUS_ITEM_ATTACH_FLAGS_SEND;
++ bus_make.attach.size = sizeof(bus_make.attach);
++ bus_make.attach.flags = owner_meta;
+
+ bus_make.name.type = KDBUS_ITEM_MAKE_NAME;
+ bus_make.name.size = KDBUS_ITEM_HEADER_SIZE +
@@ -24714,8 +27455,7 @@ index 0000000..29a0cb1
+ bus_make.cmd.flags = KDBUS_MAKE_ACCESS_WORLD;
+ bus_make.cmd.size = sizeof(bus_make.cmd) +
+ bus_make.bp.size +
-+ bus_make.attach[0].size +
-+ bus_make.attach[1].size +
++ bus_make.attach.size +
+ bus_make.name.size;
+
+ kdbus_printf("Creating bus with name >%s< on control fd %d ...\n",
@@ -26164,10 +28904,10 @@ index 0000000..29a0cb1
+}
diff --git a/tools/testing/selftests/kdbus/kdbus-util.h b/tools/testing/selftests/kdbus/kdbus-util.h
new file mode 100644
-index 0000000..d1a0f1b
+index 0000000..e1e18b9
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-util.h
-@@ -0,0 +1,219 @@
+@@ -0,0 +1,218 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Daniel Mack
@@ -26338,8 +29078,7 @@ index 0000000..d1a0f1b
+int kdbus_msg_dump(const struct kdbus_conn *conn,
+ const struct kdbus_msg *msg);
+int kdbus_create_bus(int control_fd, const char *name,
-+ uint64_t req_meta, uint64_t owner_meta,
-+ char **path);
++ uint64_t owner_meta, char **path);
+int kdbus_msg_send(const struct kdbus_conn *conn, const char *name,
+ uint64_t cookie, uint64_t flags, uint64_t timeout,
+ int64_t priority, uint64_t dst_id);
@@ -27479,10 +30218,10 @@ index 0000000..71a92d8
+}
diff --git a/tools/testing/selftests/kdbus/test-connection.c b/tools/testing/selftests/kdbus/test-connection.c
new file mode 100644
-index 0000000..e7c4866
+index 0000000..4688ce8
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-connection.c
-@@ -0,0 +1,606 @@
+@@ -0,0 +1,597 @@
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
@@ -27555,15 +30294,6 @@ index 0000000..e7c4866
+
+ hello.pool_size = POOL_SIZE;
+
-+ /*
-+ * The connection created by the core requires ALL meta flags
-+ * to be sent. An attempt to send less than that should result in
-+ * -ECONNREFUSED.
-+ */
-+ hello.attach_flags_send = _KDBUS_ATTACH_ALL & ~KDBUS_ATTACH_TIMESTAMP;
-+ ret = kdbus_cmd_hello(fd, &hello);
-+ ASSERT_RETURN(ret == -ECONNREFUSED);
-+
+ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
+ hello.offset = (__u64)-1;
+
@@ -29832,10 +32562,10 @@ index 0000000..2360dc1
+}
diff --git a/tools/testing/selftests/kdbus/test-message.c b/tools/testing/selftests/kdbus/test-message.c
new file mode 100644
-index 0000000..f1615da
+index 0000000..ddc1e0a
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-message.c
-@@ -0,0 +1,731 @@
+@@ -0,0 +1,734 @@
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
@@ -29892,9 +32622,12 @@ index 0000000..f1615da
+ KDBUS_DST_ID_BROADCAST);
+ ASSERT_RETURN(ret == 0);
+
-+ /* Make sure that we do not get our own broadcasts */
-+ ret = kdbus_msg_recv(sender, NULL, NULL);
-+ ASSERT_RETURN(ret == -EAGAIN);
++ /* Make sure that we do get our own broadcasts */
++ ret = kdbus_msg_recv(sender, &msg, &offset);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
+
+ /* ... and receive on the 2nd */
+ ret = kdbus_msg_recv_poll(conn, 100, &msg, &offset);
@@ -30569,10 +33302,10 @@ index 0000000..f1615da
+}
diff --git a/tools/testing/selftests/kdbus/test-metadata-ns.c b/tools/testing/selftests/kdbus/test-metadata-ns.c
new file mode 100644
-index 0000000..ccdfae0
+index 0000000..1f6edc0
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-metadata-ns.c
-@@ -0,0 +1,503 @@
+@@ -0,0 +1,500 @@
+/*
+ * Test metadata in new namespaces. Even if our tests can run
+ * in a namespaced setup, this test is necessary so we can inspect
@@ -30743,9 +33476,8 @@ index 0000000..ccdfae0
+ ASSERT_EXIT(ret == 0);
+ ASSERT_EXIT(msg->dst_id == userns_conn->id);
+
-+ /* Different namespaces no CAPS */
+ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
-+ ASSERT_EXIT(item == NULL);
++ ASSERT_EXIT(item);
+
+ /* uid/gid not mapped, so we have unpriv cached creds */
+ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
@@ -30771,9 +33503,8 @@ index 0000000..ccdfae0
+ ASSERT_EXIT(ret == 0);
+ ASSERT_EXIT(msg->dst_id == KDBUS_DST_ID_BROADCAST);
+
-+ /* Different namespaces no CAPS */
+ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
-+ ASSERT_EXIT(item == NULL);
++ ASSERT_EXIT(item);
+
+ /* uid/gid not mapped, so we have unpriv cached creds */
+ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
@@ -30933,9 +33664,8 @@ index 0000000..ccdfae0
+
+ userns_conn_id = msg->src_id;
+
-+ /* We do not share the userns, os no KDBUS_ITEM_CAPS */
+ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
-+ ASSERT_RETURN(item == NULL);
++ ASSERT_RETURN(item);
+
+ /*
+ * Compare received items, creds must be translated into
@@ -32098,10 +34828,10 @@ index 0000000..3437012
+}
diff --git a/tools/testing/selftests/kdbus/test-policy-priv.c b/tools/testing/selftests/kdbus/test-policy-priv.c
new file mode 100644
-index 0000000..a318ccc
+index 0000000..0208638
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-policy-priv.c
-@@ -0,0 +1,1269 @@
+@@ -0,0 +1,1285 @@
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
@@ -32214,6 +34944,12 @@ index 0000000..a318ccc
+ KDBUS_DST_ID_BROADCAST);
+ ASSERT_RETURN(ret == 0);
+
++ /* drop own broadcast */
++ ret = kdbus_msg_recv(child_2, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->src_id == child_2->id);
++ kdbus_msg_free(msg);
++
+ /* Use a little bit high time */
+ ret = kdbus_msg_recv_poll(child_2, 1000,
+ &msg, NULL);
@@ -32249,6 +34985,12 @@ index 0000000..a318ccc
+ KDBUS_DST_ID_BROADCAST);
+ ASSERT_EXIT(ret == 0);
+
++ /* drop own broadcast */
++ ret = kdbus_msg_recv(child_2, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->src_id == child_2->id);
++ kdbus_msg_free(msg);
++
+ /* Use a little bit high time */
+ ret = kdbus_msg_recv_poll(child_2, 1000,
+ &msg, NULL);
@@ -32417,11 +35159,6 @@ index 0000000..a318ccc
+ * receiver is not able to TALK to that name.
+ */
+
-+ ret = test_policy_priv_by_broadcast(env->buspath, owner_a,
-+ DO_NOT_DROP,
-+ -ETIMEDOUT, -ETIMEDOUT);
-+ ASSERT_RETURN(ret == 0);
-+
+ /* Activate matching for a privileged connection */
+ ret = kdbus_add_match_empty(owner_a);
+ ASSERT_RETURN(ret == 0);
@@ -32512,6 +35249,15 @@ index 0000000..a318ccc
+ 0, 0, KDBUS_DST_ID_BROADCAST);
+ ASSERT_RETURN(ret == 0);
+
++ ret = kdbus_msg_recv_poll(owner_a, 100, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == expected_cookie);
++
++ /* Check src ID */
++ ASSERT_RETURN(msg->src_id == owner_a->id);
++
++ kdbus_msg_free(msg);
++
+ ret = kdbus_msg_recv_poll(owner_b, 100, &msg, NULL);
+ ASSERT_RETURN(ret == 0);
+ ASSERT_RETURN(msg->cookie == expected_cookie);
@@ -33937,3 +36683,27 @@ index 0000000..cfd1930
+
+ return TEST_OK;
+}
+diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
+index 950064a..78fb820 100644
+--- a/virt/kvm/arm/vgic.c
++++ b/virt/kvm/arm/vgic.c
+@@ -1561,7 +1561,7 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
+ goto out;
+ }
+
+- if (irq_num >= min(kvm->arch.vgic.nr_irqs, 1020))
++ if (irq_num >= kvm->arch.vgic.nr_irqs)
+ return -EINVAL;
+
+ vcpu_id = vgic_update_irq_pending(kvm, cpuid, irq_num, level);
+@@ -2161,7 +2161,10 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id,
+
+ BUG_ON(!vgic_initialized(kvm));
+
++ if (spi > kvm->arch.vgic.nr_irqs)
++ return -EINVAL;
+ return kvm_vgic_inject_irq(kvm, 0, spi, level);
++
+ }
+
+ /* MSI not implemented yet */
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-07-10 23:47 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-07-10 23:47 UTC (permalink / raw
To: gentoo-commits
commit: 6de9c5bd82aa04106c0053e3e5da83ecea932eed
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Jul 10 23:34:57 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Jul 10 23:34:57 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=6de9c5bd
Linux patch 4.1.2
0000_README | 4 +
1001_linux-4.1.2.patch | 2235 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2239 insertions(+)
diff --git a/0000_README b/0000_README
index 8bf61f5..784c55d 100644
--- a/0000_README
+++ b/0000_README
@@ -47,6 +47,10 @@ Patch: 1000_linux-4.1.1.patch
From: http://www.kernel.org
Desc: Linux 4.1.1
+Patch: 1001_linux-4.1.2.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.2
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1001_linux-4.1.2.patch b/1001_linux-4.1.2.patch
new file mode 100644
index 0000000..c8b2f30
--- /dev/null
+++ b/1001_linux-4.1.2.patch
@@ -0,0 +1,2235 @@
+diff --git a/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt b/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
+index 750d577e8083..f5a8ca29aff0 100644
+--- a/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
++++ b/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt
+@@ -1,7 +1,7 @@
+ * Marvell Armada 370 / Armada XP Ethernet Controller (NETA)
+
+ Required properties:
+-- compatible: should be "marvell,armada-370-neta".
++- compatible: "marvell,armada-370-neta" or "marvell,armada-xp-neta".
+ - reg: address and length of the register set for the device.
+ - interrupts: interrupt for the device
+ - phy: See ethernet.txt file in the same directory.
+diff --git a/Makefile b/Makefile
+index 1caf4ad3eb8a..cef84c061f02 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 1
++SUBLEVEL = 2
+ EXTRAVERSION =
+ NAME = Series 4800
+
+diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi
+index ec96f0b36346..06a2f2ae9d1e 100644
+--- a/arch/arm/boot/dts/armada-370-xp.dtsi
++++ b/arch/arm/boot/dts/armada-370-xp.dtsi
+@@ -270,7 +270,6 @@
+ };
+
+ eth0: ethernet@70000 {
+- compatible = "marvell,armada-370-neta";
+ reg = <0x70000 0x4000>;
+ interrupts = <8>;
+ clocks = <&gateclk 4>;
+@@ -286,7 +285,6 @@
+ };
+
+ eth1: ethernet@74000 {
+- compatible = "marvell,armada-370-neta";
+ reg = <0x74000 0x4000>;
+ interrupts = <10>;
+ clocks = <&gateclk 3>;
+diff --git a/arch/arm/boot/dts/armada-370.dtsi b/arch/arm/boot/dts/armada-370.dtsi
+index 00b50db57c9c..ca4257b2f77d 100644
+--- a/arch/arm/boot/dts/armada-370.dtsi
++++ b/arch/arm/boot/dts/armada-370.dtsi
+@@ -307,6 +307,14 @@
+ dmacap,memset;
+ };
+ };
++
++ ethernet@70000 {
++ compatible = "marvell,armada-370-neta";
++ };
++
++ ethernet@74000 {
++ compatible = "marvell,armada-370-neta";
++ };
+ };
+ };
+ };
+diff --git a/arch/arm/boot/dts/armada-xp-mv78260.dtsi b/arch/arm/boot/dts/armada-xp-mv78260.dtsi
+index 8479fdc9e9c2..c5fdc99f0dbe 100644
+--- a/arch/arm/boot/dts/armada-xp-mv78260.dtsi
++++ b/arch/arm/boot/dts/armada-xp-mv78260.dtsi
+@@ -318,7 +318,7 @@
+ };
+
+ eth3: ethernet@34000 {
+- compatible = "marvell,armada-370-neta";
++ compatible = "marvell,armada-xp-neta";
+ reg = <0x34000 0x4000>;
+ interrupts = <14>;
+ clocks = <&gateclk 1>;
+diff --git a/arch/arm/boot/dts/armada-xp-mv78460.dtsi b/arch/arm/boot/dts/armada-xp-mv78460.dtsi
+index 661d54c81580..0e24f1a38540 100644
+--- a/arch/arm/boot/dts/armada-xp-mv78460.dtsi
++++ b/arch/arm/boot/dts/armada-xp-mv78460.dtsi
+@@ -356,7 +356,7 @@
+ };
+
+ eth3: ethernet@34000 {
+- compatible = "marvell,armada-370-neta";
++ compatible = "marvell,armada-xp-neta";
+ reg = <0x34000 0x4000>;
+ interrupts = <14>;
+ clocks = <&gateclk 1>;
+diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi
+index 013d63f69e36..8fdd6d7c0ab1 100644
+--- a/arch/arm/boot/dts/armada-xp.dtsi
++++ b/arch/arm/boot/dts/armada-xp.dtsi
+@@ -177,7 +177,7 @@
+ };
+
+ eth2: ethernet@30000 {
+- compatible = "marvell,armada-370-neta";
++ compatible = "marvell,armada-xp-neta";
+ reg = <0x30000 0x4000>;
+ interrupts = <12>;
+ clocks = <&gateclk 2>;
+@@ -220,6 +220,14 @@
+ };
+ };
+
++ ethernet@70000 {
++ compatible = "marvell,armada-xp-neta";
++ };
++
++ ethernet@74000 {
++ compatible = "marvell,armada-xp-neta";
++ };
++
+ xor@f0900 {
+ compatible = "marvell,orion-xor";
+ reg = <0xF0900 0x100
+diff --git a/arch/arm/boot/dts/sun5i-a10s.dtsi b/arch/arm/boot/dts/sun5i-a10s.dtsi
+index 2fd8988f310c..3794ca16499d 100644
+--- a/arch/arm/boot/dts/sun5i-a10s.dtsi
++++ b/arch/arm/boot/dts/sun5i-a10s.dtsi
+@@ -573,7 +573,7 @@
+ };
+
+ rtp: rtp@01c25000 {
+- compatible = "allwinner,sun4i-a10-ts";
++ compatible = "allwinner,sun5i-a13-ts";
+ reg = <0x01c25000 0x100>;
+ interrupts = <29>;
+ #thermal-sensor-cells = <0>;
+diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
+index 883cb4873688..5098185abde6 100644
+--- a/arch/arm/boot/dts/sun5i-a13.dtsi
++++ b/arch/arm/boot/dts/sun5i-a13.dtsi
+@@ -555,7 +555,7 @@
+ };
+
+ rtp: rtp@01c25000 {
+- compatible = "allwinner,sun4i-a10-ts";
++ compatible = "allwinner,sun5i-a13-ts";
+ reg = <0x01c25000 0x100>;
+ interrupts = <29>;
+ #thermal-sensor-cells = <0>;
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index fdd181792b4b..2b4847c7cbd4 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -1042,7 +1042,7 @@
+ };
+
+ rtp: rtp@01c25000 {
+- compatible = "allwinner,sun4i-a10-ts";
++ compatible = "allwinner,sun5i-a13-ts";
+ reg = <0x01c25000 0x100>;
+ interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+ #thermal-sensor-cells = <0>;
+diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
+index 79caf79b304a..f7db3a5d80e3 100644
+--- a/arch/arm/kvm/interrupts.S
++++ b/arch/arm/kvm/interrupts.S
+@@ -170,13 +170,9 @@ __kvm_vcpu_return:
+ @ Don't trap coprocessor accesses for host kernel
+ set_hstr vmexit
+ set_hdcr vmexit
+- set_hcptr vmexit, (HCPTR_TTA | HCPTR_TCP(10) | HCPTR_TCP(11))
++ set_hcptr vmexit, (HCPTR_TTA | HCPTR_TCP(10) | HCPTR_TCP(11)), after_vfp_restore
+
+ #ifdef CONFIG_VFPv3
+- @ Save floating point registers we if let guest use them.
+- tst r2, #(HCPTR_TCP(10) | HCPTR_TCP(11))
+- bne after_vfp_restore
+-
+ @ Switch VFP/NEON hardware state to the host's
+ add r7, vcpu, #VCPU_VFP_GUEST
+ store_vfp_state r7
+@@ -188,6 +184,8 @@ after_vfp_restore:
+ @ Restore FPEXC_EN which we clobbered on entry
+ pop {r2}
+ VFPFMXR FPEXC, r2
++#else
++after_vfp_restore:
+ #endif
+
+ @ Reset Hyp-role
+@@ -483,7 +481,7 @@ switch_to_guest_vfp:
+ push {r3-r7}
+
+ @ NEON/VFP used. Turn on VFP access.
+- set_hcptr vmexit, (HCPTR_TCP(10) | HCPTR_TCP(11))
++ set_hcptr vmtrap, (HCPTR_TCP(10) | HCPTR_TCP(11))
+
+ @ Switch VFP/NEON hardware state to the guest's
+ add r7, r0, #VCPU_VFP_HOST
+diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S
+index 35e4a3a0c476..48efe2ee452c 100644
+--- a/arch/arm/kvm/interrupts_head.S
++++ b/arch/arm/kvm/interrupts_head.S
+@@ -591,8 +591,13 @@ ARM_BE8(rev r6, r6 )
+ .endm
+
+ /* Configures the HCPTR (Hyp Coprocessor Trap Register) on entry/return
+- * (hardware reset value is 0). Keep previous value in r2. */
+-.macro set_hcptr operation, mask
++ * (hardware reset value is 0). Keep previous value in r2.
++ * An ISB is emited on vmexit/vmtrap, but executed on vmexit only if
++ * VFP wasn't already enabled (always executed on vmtrap).
++ * If a label is specified with vmexit, it is branched to if VFP wasn't
++ * enabled.
++ */
++.macro set_hcptr operation, mask, label = none
+ mrc p15, 4, r2, c1, c1, 2
+ ldr r3, =\mask
+ .if \operation == vmentry
+@@ -601,6 +606,17 @@ ARM_BE8(rev r6, r6 )
+ bic r3, r2, r3 @ Don't trap defined coproc-accesses
+ .endif
+ mcr p15, 4, r3, c1, c1, 2
++ .if \operation != vmentry
++ .if \operation == vmexit
++ tst r2, #(HCPTR_TCP(10) | HCPTR_TCP(11))
++ beq 1f
++ .endif
++ isb
++ .if \label != none
++ b \label
++ .endif
++1:
++ .endif
+ .endm
+
+ /* Configures the HDCR (Hyp Debug Configuration Register) on entry/return
+diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c
+index 02fa8eff6ae1..531e922486b2 100644
+--- a/arch/arm/kvm/psci.c
++++ b/arch/arm/kvm/psci.c
+@@ -230,10 +230,6 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
+ case PSCI_0_2_FN64_AFFINITY_INFO:
+ val = kvm_psci_vcpu_affinity_info(vcpu);
+ break;
+- case PSCI_0_2_FN_MIGRATE:
+- case PSCI_0_2_FN64_MIGRATE:
+- val = PSCI_RET_NOT_SUPPORTED;
+- break;
+ case PSCI_0_2_FN_MIGRATE_INFO_TYPE:
+ /*
+ * Trusted OS is MP hence does not require migration
+@@ -242,10 +238,6 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
+ */
+ val = PSCI_0_2_TOS_MP;
+ break;
+- case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU:
+- case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU:
+- val = PSCI_RET_NOT_SUPPORTED;
+- break;
+ case PSCI_0_2_FN_SYSTEM_OFF:
+ kvm_psci_system_off(vcpu);
+ /*
+@@ -271,7 +263,8 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
+ ret = 0;
+ break;
+ default:
+- return -EINVAL;
++ val = PSCI_RET_NOT_SUPPORTED;
++ break;
+ }
+
+ *vcpu_reg(vcpu, 0) = val;
+@@ -291,12 +284,9 @@ static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu)
+ case KVM_PSCI_FN_CPU_ON:
+ val = kvm_psci_vcpu_on(vcpu);
+ break;
+- case KVM_PSCI_FN_CPU_SUSPEND:
+- case KVM_PSCI_FN_MIGRATE:
++ default:
+ val = PSCI_RET_NOT_SUPPORTED;
+ break;
+- default:
+- return -EINVAL;
+ }
+
+ *vcpu_reg(vcpu, 0) = val;
+diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
+index 469a150bf98f..a2e8ef3c0bd9 100644
+--- a/arch/arm/mach-imx/clk-imx6q.c
++++ b/arch/arm/mach-imx/clk-imx6q.c
+@@ -443,7 +443,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
+ clk[IMX6QDL_CLK_GPMI_IO] = imx_clk_gate2("gpmi_io", "enfc", base + 0x78, 28);
+ clk[IMX6QDL_CLK_GPMI_APB] = imx_clk_gate2("gpmi_apb", "usdhc3", base + 0x78, 30);
+ clk[IMX6QDL_CLK_ROM] = imx_clk_gate2("rom", "ahb", base + 0x7c, 0);
+- clk[IMX6QDL_CLK_SATA] = imx_clk_gate2("sata", "ipg", base + 0x7c, 4);
++ clk[IMX6QDL_CLK_SATA] = imx_clk_gate2("sata", "ahb", base + 0x7c, 4);
+ clk[IMX6QDL_CLK_SDMA] = imx_clk_gate2("sdma", "ahb", base + 0x7c, 6);
+ clk[IMX6QDL_CLK_SPBA] = imx_clk_gate2("spba", "ipg", base + 0x7c, 12);
+ clk[IMX6QDL_CLK_SPDIF] = imx_clk_gate2("spdif", "spdif_podf", base + 0x7c, 14);
+diff --git a/arch/arm/mach-mvebu/pm-board.c b/arch/arm/mach-mvebu/pm-board.c
+index 6dfd4ab97b2a..301ab38d38ba 100644
+--- a/arch/arm/mach-mvebu/pm-board.c
++++ b/arch/arm/mach-mvebu/pm-board.c
+@@ -43,6 +43,9 @@ static void mvebu_armada_xp_gp_pm_enter(void __iomem *sdram_reg, u32 srcmd)
+ for (i = 0; i < ARMADA_XP_GP_PIC_NR_GPIOS; i++)
+ ackcmd |= BIT(pic_raw_gpios[i]);
+
++ srcmd = cpu_to_le32(srcmd);
++ ackcmd = cpu_to_le32(ackcmd);
++
+ /*
+ * Wait a while, the PIC needs quite a bit of time between the
+ * two GPIO commands.
+diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
+index 88de2dce2e87..7469347b1749 100644
+--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
++++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
+@@ -34,6 +34,7 @@
+ #include "iomap.h"
+ #include "irq.h"
+ #include "pm.h"
++#include "reset.h"
+ #include "sleep.h"
+
+ #ifdef CONFIG_PM_SLEEP
+@@ -70,15 +71,13 @@ static struct cpuidle_driver tegra_idle_driver = {
+
+ #ifdef CONFIG_PM_SLEEP
+ #ifdef CONFIG_SMP
+-static void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
+-
+ static int tegra20_reset_sleeping_cpu_1(void)
+ {
+ int ret = 0;
+
+ tegra_pen_lock();
+
+- if (readl(pmc + PMC_SCRATCH41) == CPU_RESETTABLE)
++ if (readb(tegra20_cpu1_resettable_status) == CPU_RESETTABLE)
+ tegra20_cpu_shutdown(1);
+ else
+ ret = -EINVAL;
+diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S
+index 71be4af5e975..e3070fdab80b 100644
+--- a/arch/arm/mach-tegra/reset-handler.S
++++ b/arch/arm/mach-tegra/reset-handler.S
+@@ -169,10 +169,10 @@ after_errata:
+ cmp r6, #TEGRA20
+ bne 1f
+ /* If not CPU0, don't let CPU0 reset CPU1 now that CPU1 is coming up. */
+- mov32 r5, TEGRA_PMC_BASE
+- mov r0, #0
++ mov32 r5, TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET
++ mov r0, #CPU_NOT_RESETTABLE
+ cmp r10, #0
+- strne r0, [r5, #PMC_SCRATCH41]
++ strneb r0, [r5, #__tegra20_cpu1_resettable_status_offset]
+ 1:
+ #endif
+
+@@ -281,6 +281,10 @@ __tegra_cpu_reset_handler_data:
+ .rept TEGRA_RESET_DATA_SIZE
+ .long 0
+ .endr
++ .globl __tegra20_cpu1_resettable_status_offset
++ .equ __tegra20_cpu1_resettable_status_offset, \
++ . - __tegra_cpu_reset_handler_start
++ .byte 0
+ .align L1_CACHE_SHIFT
+
+ ENTRY(__tegra_cpu_reset_handler_end)
+diff --git a/arch/arm/mach-tegra/reset.h b/arch/arm/mach-tegra/reset.h
+index 76a93434c6ee..29c3dec0126a 100644
+--- a/arch/arm/mach-tegra/reset.h
++++ b/arch/arm/mach-tegra/reset.h
+@@ -35,6 +35,7 @@ extern unsigned long __tegra_cpu_reset_handler_data[TEGRA_RESET_DATA_SIZE];
+
+ void __tegra_cpu_reset_handler_start(void);
+ void __tegra_cpu_reset_handler(void);
++void __tegra20_cpu1_resettable_status_offset(void);
+ void __tegra_cpu_reset_handler_end(void);
+ void tegra_secondary_startup(void);
+
+@@ -47,6 +48,9 @@ void tegra_secondary_startup(void);
+ (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \
+ ((u32)&__tegra_cpu_reset_handler_data[TEGRA_RESET_MASK_LP2] - \
+ (u32)__tegra_cpu_reset_handler_start)))
++#define tegra20_cpu1_resettable_status \
++ (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \
++ (u32)__tegra20_cpu1_resettable_status_offset))
+ #endif
+
+ #define tegra_cpu_reset_handler_offset \
+diff --git a/arch/arm/mach-tegra/sleep-tegra20.S b/arch/arm/mach-tegra/sleep-tegra20.S
+index be4bc5f853f5..e6b684e14322 100644
+--- a/arch/arm/mach-tegra/sleep-tegra20.S
++++ b/arch/arm/mach-tegra/sleep-tegra20.S
+@@ -97,9 +97,10 @@ ENDPROC(tegra20_hotplug_shutdown)
+ ENTRY(tegra20_cpu_shutdown)
+ cmp r0, #0
+ reteq lr @ must not be called for CPU 0
+- mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
++ mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
++ ldr r2, =__tegra20_cpu1_resettable_status_offset
+ mov r12, #CPU_RESETTABLE
+- str r12, [r1]
++ strb r12, [r1, r2]
+
+ cpu_to_halt_reg r1, r0
+ ldr r3, =TEGRA_FLOW_CTRL_VIRT
+@@ -182,38 +183,41 @@ ENDPROC(tegra_pen_unlock)
+ /*
+ * tegra20_cpu_clear_resettable(void)
+ *
+- * Called to clear the "resettable soon" flag in PMC_SCRATCH41 when
++ * Called to clear the "resettable soon" flag in IRAM variable when
+ * it is expected that the secondary CPU will be idle soon.
+ */
+ ENTRY(tegra20_cpu_clear_resettable)
+- mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
++ mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
++ ldr r2, =__tegra20_cpu1_resettable_status_offset
+ mov r12, #CPU_NOT_RESETTABLE
+- str r12, [r1]
++ strb r12, [r1, r2]
+ ret lr
+ ENDPROC(tegra20_cpu_clear_resettable)
+
+ /*
+ * tegra20_cpu_set_resettable_soon(void)
+ *
+- * Called to set the "resettable soon" flag in PMC_SCRATCH41 when
++ * Called to set the "resettable soon" flag in IRAM variable when
+ * it is expected that the secondary CPU will be idle soon.
+ */
+ ENTRY(tegra20_cpu_set_resettable_soon)
+- mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
++ mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
++ ldr r2, =__tegra20_cpu1_resettable_status_offset
+ mov r12, #CPU_RESETTABLE_SOON
+- str r12, [r1]
++ strb r12, [r1, r2]
+ ret lr
+ ENDPROC(tegra20_cpu_set_resettable_soon)
+
+ /*
+ * tegra20_cpu_is_resettable_soon(void)
+ *
+- * Returns true if the "resettable soon" flag in PMC_SCRATCH41 has been
++ * Returns true if the "resettable soon" flag in IRAM variable has been
+ * set because it is expected that the secondary CPU will be idle soon.
+ */
+ ENTRY(tegra20_cpu_is_resettable_soon)
+- mov32 r1, TEGRA_PMC_VIRT + PMC_SCRATCH41
+- ldr r12, [r1]
++ mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT
++ ldr r2, =__tegra20_cpu1_resettable_status_offset
++ ldrb r12, [r1, r2]
+ cmp r12, #CPU_RESETTABLE_SOON
+ moveq r0, #1
+ movne r0, #0
+@@ -256,9 +260,10 @@ ENTRY(tegra20_sleep_cpu_secondary_finish)
+ mov r0, #TEGRA_FLUSH_CACHE_LOUIS
+ bl tegra_disable_clean_inv_dcache
+
+- mov32 r0, TEGRA_PMC_VIRT + PMC_SCRATCH41
++ mov32 r0, TEGRA_IRAM_RESET_BASE_VIRT
++ ldr r4, =__tegra20_cpu1_resettable_status_offset
+ mov r3, #CPU_RESETTABLE
+- str r3, [r0]
++ strb r3, [r0, r4]
+
+ bl tegra_cpu_do_idle
+
+@@ -274,10 +279,10 @@ ENTRY(tegra20_sleep_cpu_secondary_finish)
+
+ bl tegra_pen_lock
+
+- mov32 r3, TEGRA_PMC_VIRT
+- add r0, r3, #PMC_SCRATCH41
++ mov32 r0, TEGRA_IRAM_RESET_BASE_VIRT
++ ldr r4, =__tegra20_cpu1_resettable_status_offset
+ mov r3, #CPU_NOT_RESETTABLE
+- str r3, [r0]
++ strb r3, [r0, r4]
+
+ bl tegra_pen_unlock
+
+diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h
+index 92d46ec1361a..0d59360d891d 100644
+--- a/arch/arm/mach-tegra/sleep.h
++++ b/arch/arm/mach-tegra/sleep.h
+@@ -18,6 +18,7 @@
+ #define __MACH_TEGRA_SLEEP_H
+
+ #include "iomap.h"
++#include "irammap.h"
+
+ #define TEGRA_ARM_PERIF_VIRT (TEGRA_ARM_PERIF_BASE - IO_CPU_PHYS \
+ + IO_CPU_VIRT)
+@@ -29,6 +30,9 @@
+ + IO_APB_VIRT)
+ #define TEGRA_PMC_VIRT (TEGRA_PMC_BASE - IO_APB_PHYS + IO_APB_VIRT)
+
++#define TEGRA_IRAM_RESET_BASE_VIRT (IO_IRAM_VIRT + \
++ TEGRA_IRAM_RESET_HANDLER_OFFSET)
++
+ /* PMC_SCRATCH37-39 and 41 are used for tegra_pen_lock and idle */
+ #define PMC_SCRATCH37 0x130
+ #define PMC_SCRATCH38 0x134
+diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
+index 9488fa5f8866..afc96ecb9004 100644
+--- a/arch/mips/include/asm/mach-generic/spaces.h
++++ b/arch/mips/include/asm/mach-generic/spaces.h
+@@ -94,7 +94,11 @@
+ #endif
+
+ #ifndef FIXADDR_TOP
++#ifdef CONFIG_KVM_GUEST
++#define FIXADDR_TOP ((unsigned long)(long)(int)0x7ffe0000)
++#else
+ #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000)
+ #endif
++#endif
+
+ #endif /* __ASM_MACH_GENERIC_SPACES_H */
+diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
+index bb68e8d520e8..52f205ae1281 100644
+--- a/arch/mips/kvm/mips.c
++++ b/arch/mips/kvm/mips.c
+@@ -982,7 +982,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
+
+ /* If nothing is dirty, don't bother messing with page tables. */
+ if (is_dirty) {
+- memslot = &kvm->memslots->memslots[log->slot];
++ memslot = id_to_memslot(kvm->memslots, log->slot);
+
+ ga = memslot->base_gfn << PAGE_SHIFT;
+ ga_end = ga + (memslot->npages << PAGE_SHIFT);
+diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
+index 12b638425bb9..d90893b76e7c 100644
+--- a/arch/powerpc/perf/core-book3s.c
++++ b/arch/powerpc/perf/core-book3s.c
+@@ -131,7 +131,16 @@ static void pmao_restore_workaround(bool ebb) { }
+
+ static bool regs_use_siar(struct pt_regs *regs)
+ {
+- return !!regs->result;
++ /*
++ * When we take a performance monitor exception the regs are setup
++ * using perf_read_regs() which overloads some fields, in particular
++ * regs->result to tell us whether to use SIAR.
++ *
++ * However if the regs are from another exception, eg. a syscall, then
++ * they have not been setup using perf_read_regs() and so regs->result
++ * is something random.
++ */
++ return ((TRAP(regs) == 0xf00) && regs->result);
+ }
+
+ /*
+diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
+index 9f73c8059022..49b74454d7ee 100644
+--- a/arch/s390/kernel/crash_dump.c
++++ b/arch/s390/kernel/crash_dump.c
+@@ -415,7 +415,7 @@ static void *nt_s390_vx_low(void *ptr, __vector128 *vx_regs)
+ ptr += len;
+ /* Copy lower halves of SIMD registers 0-15 */
+ for (i = 0; i < 16; i++) {
+- memcpy(ptr, &vx_regs[i], 8);
++ memcpy(ptr, &vx_regs[i].u[2], 8);
+ ptr += 8;
+ }
+ return ptr;
+diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
+index 9de47265ef73..b745a109bfc1 100644
+--- a/arch/s390/kvm/interrupt.c
++++ b/arch/s390/kvm/interrupt.c
+@@ -1061,7 +1061,7 @@ static int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
+ if (sclp_has_sigpif())
+ return __inject_extcall_sigpif(vcpu, src_id);
+
+- if (!test_and_set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs))
++ if (test_and_set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs))
+ return -EBUSY;
+ *extcall = irq->u.extcall;
+ atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
+@@ -1606,6 +1606,9 @@ void kvm_s390_clear_float_irqs(struct kvm *kvm)
+ int i;
+
+ spin_lock(&fi->lock);
++ fi->pending_irqs = 0;
++ memset(&fi->srv_signal, 0, sizeof(fi->srv_signal));
++ memset(&fi->mchk, 0, sizeof(fi->mchk));
+ for (i = 0; i < FIRQ_LIST_COUNT; i++)
+ clear_irq_list(&fi->lists[i]);
+ for (i = 0; i < FIRQ_MAX_COUNT; i++)
+diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
+index 55423d8be580..9afb9d602f84 100644
+--- a/arch/s390/net/bpf_jit_comp.c
++++ b/arch/s390/net/bpf_jit_comp.c
+@@ -227,7 +227,7 @@ static inline void reg_set_seen(struct bpf_jit *jit, u32 b1)
+ ({ \
+ /* Branch instruction needs 6 bytes */ \
+ int rel = (addrs[i + off + 1] - (addrs[i + 1] - 6)) / 2;\
+- _EMIT6(op1 | reg(b1, b2) << 16 | rel, op2 | mask); \
++ _EMIT6(op1 | reg(b1, b2) << 16 | (rel & 0xffff), op2 | mask); \
+ REG_SET_SEEN(b1); \
+ REG_SET_SEEN(b2); \
+ })
+diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
+index f4a555beef19..41b06fca39f7 100644
+--- a/arch/x86/include/asm/kvm_host.h
++++ b/arch/x86/include/asm/kvm_host.h
+@@ -591,7 +591,7 @@ struct kvm_arch {
+ struct kvm_pic *vpic;
+ struct kvm_ioapic *vioapic;
+ struct kvm_pit *vpit;
+- int vapics_in_nmi_mode;
++ atomic_t vapics_in_nmi_mode;
+ struct mutex apic_map_lock;
+ struct kvm_apic_map *apic_map;
+
+diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
+index 4dce6f8b6129..f90952f64e79 100644
+--- a/arch/x86/kvm/i8254.c
++++ b/arch/x86/kvm/i8254.c
+@@ -305,7 +305,7 @@ static void pit_do_work(struct kthread_work *work)
+ * LVT0 to NMI delivery. Other PIC interrupts are just sent to
+ * VCPU0, and only if its LVT0 is in EXTINT mode.
+ */
+- if (kvm->arch.vapics_in_nmi_mode > 0)
++ if (atomic_read(&kvm->arch.vapics_in_nmi_mode) > 0)
+ kvm_for_each_vcpu(i, vcpu, kvm)
+ kvm_apic_nmi_wd_deliver(vcpu);
+ }
+diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
+index 4c7deb4f78a1..67d07e051436 100644
+--- a/arch/x86/kvm/lapic.c
++++ b/arch/x86/kvm/lapic.c
+@@ -1250,10 +1250,10 @@ static void apic_manage_nmi_watchdog(struct kvm_lapic *apic, u32 lvt0_val)
+ if (!nmi_wd_enabled) {
+ apic_debug("Receive NMI setting on APIC_LVT0 "
+ "for cpu %d\n", apic->vcpu->vcpu_id);
+- apic->vcpu->kvm->arch.vapics_in_nmi_mode++;
++ atomic_inc(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
+ }
+ } else if (nmi_wd_enabled)
+- apic->vcpu->kvm->arch.vapics_in_nmi_mode--;
++ atomic_dec(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
+ }
+
+ static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
+@@ -1808,6 +1808,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
+ apic_update_ppr(apic);
+ hrtimer_cancel(&apic->lapic_timer.timer);
+ apic_update_lvtt(apic);
++ apic_manage_nmi_watchdog(apic, kvm_apic_get_reg(apic, APIC_LVT0));
+ update_divide_count(apic);
+ start_apic_timer(apic);
+ apic->irr_pending = true;
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 9afa233b5482..4911bf19122b 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -511,8 +511,10 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
+ {
+ struct vcpu_svm *svm = to_svm(vcpu);
+
+- if (svm->vmcb->control.next_rip != 0)
++ if (svm->vmcb->control.next_rip != 0) {
++ WARN_ON(!static_cpu_has(X86_FEATURE_NRIPS));
+ svm->next_rip = svm->vmcb->control.next_rip;
++ }
+
+ if (!svm->next_rip) {
+ if (emulate_instruction(vcpu, EMULTYPE_SKIP) !=
+@@ -4317,7 +4319,9 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu,
+ break;
+ }
+
+- vmcb->control.next_rip = info->next_rip;
++ /* TODO: Advertise NRIPS to guest hypervisor unconditionally */
++ if (static_cpu_has(X86_FEATURE_NRIPS))
++ vmcb->control.next_rip = info->next_rip;
+ vmcb->control.exit_code = icpt_info.exit_code;
+ vmexit = nested_svm_exit_handled(svm);
+
+diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
+index 14a63ed6fe09..ff9911707160 100644
+--- a/arch/x86/pci/acpi.c
++++ b/arch/x86/pci/acpi.c
+@@ -81,6 +81,17 @@ static const struct dmi_system_id pci_crs_quirks[] __initconst = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
+ },
+ },
++ /* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/931368 */
++ /* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1033299 */
++ {
++ .callback = set_use_crs,
++ .ident = "Foxconn K8M890-8237A",
++ .matches = {
++ DMI_MATCH(DMI_BOARD_VENDOR, "Foxconn"),
++ DMI_MATCH(DMI_BOARD_NAME, "K8M890-8237A"),
++ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
++ },
++ },
+
+ /* Now for the blacklist.. */
+
+@@ -121,8 +132,10 @@ void __init pci_acpi_crs_quirks(void)
+ {
+ int year;
+
+- if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
+- pci_use_crs = false;
++ if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008) {
++ if (iomem_resource.end <= 0xffffffff)
++ pci_use_crs = false;
++ }
+
+ dmi_check_system(pci_crs_quirks);
+
+diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
+index 6414661ac1c4..c45d274a75c8 100644
+--- a/drivers/cpufreq/intel_pstate.c
++++ b/drivers/cpufreq/intel_pstate.c
+@@ -535,7 +535,7 @@ static void byt_set_pstate(struct cpudata *cpudata, int pstate)
+
+ val |= vid;
+
+- wrmsrl(MSR_IA32_PERF_CTL, val);
++ wrmsrl_on_cpu(cpudata->cpu, MSR_IA32_PERF_CTL, val);
+ }
+
+ #define BYT_BCLK_FREQS 5
+diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
+index 59372077ec7c..3442764a5293 100644
+--- a/drivers/cpuidle/cpuidle-powernv.c
++++ b/drivers/cpuidle/cpuidle-powernv.c
+@@ -60,6 +60,8 @@ static int nap_loop(struct cpuidle_device *dev,
+ return index;
+ }
+
++/* Register for fastsleep only in oneshot mode of broadcast */
++#ifdef CONFIG_TICK_ONESHOT
+ static int fastsleep_loop(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
+ int index)
+@@ -83,7 +85,7 @@ static int fastsleep_loop(struct cpuidle_device *dev,
+
+ return index;
+ }
+-
++#endif
+ /*
+ * States for dedicated partition case.
+ */
+@@ -209,7 +211,14 @@ static int powernv_add_idle_states(void)
+ powernv_states[nr_idle_states].flags = 0;
+ powernv_states[nr_idle_states].target_residency = 100;
+ powernv_states[nr_idle_states].enter = &nap_loop;
+- } else if (flags[i] & OPAL_PM_SLEEP_ENABLED ||
++ }
++
++ /*
++ * All cpuidle states with CPUIDLE_FLAG_TIMER_STOP set must come
++ * within this config dependency check.
++ */
++#ifdef CONFIG_TICK_ONESHOT
++ if (flags[i] & OPAL_PM_SLEEP_ENABLED ||
+ flags[i] & OPAL_PM_SLEEP_ENABLED_ER1) {
+ /* Add FASTSLEEP state */
+ strcpy(powernv_states[nr_idle_states].name, "FastSleep");
+@@ -218,7 +227,7 @@ static int powernv_add_idle_states(void)
+ powernv_states[nr_idle_states].target_residency = 300000;
+ powernv_states[nr_idle_states].enter = &fastsleep_loop;
+ }
+-
++#endif
+ powernv_states[nr_idle_states].exit_latency =
+ ((unsigned int)latency_ns[i]) / 1000;
+
+diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
+index 857414afa29a..f062158d4dc9 100644
+--- a/drivers/crypto/talitos.c
++++ b/drivers/crypto/talitos.c
+@@ -925,7 +925,8 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
+ sg_count--;
+ link_tbl_ptr--;
+ }
+- be16_add_cpu(&link_tbl_ptr->len, cryptlen);
++ link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len)
++ + cryptlen);
+
+ /* tag end of link table */
+ link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
+@@ -2561,6 +2562,7 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
+ break;
+ default:
+ dev_err(dev, "unknown algorithm type %d\n", t_alg->algt.type);
++ kfree(t_alg);
+ return ERR_PTR(-EINVAL);
+ }
+
+diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
+index e1c7e9e51045..ca9f4edbb940 100644
+--- a/drivers/iommu/amd_iommu.c
++++ b/drivers/iommu/amd_iommu.c
+@@ -1869,9 +1869,15 @@ static void free_pt_##LVL (unsigned long __pt) \
+ pt = (u64 *)__pt; \
+ \
+ for (i = 0; i < 512; ++i) { \
++ /* PTE present? */ \
+ if (!IOMMU_PTE_PRESENT(pt[i])) \
+ continue; \
+ \
++ /* Large PTE? */ \
++ if (PM_PTE_LEVEL(pt[i]) == 0 || \
++ PM_PTE_LEVEL(pt[i]) == 7) \
++ continue; \
++ \
+ p = (unsigned long)IOMMU_PTE_PAGE(pt[i]); \
+ FN(p); \
+ } \
+diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
+index 66a803b9dd3a..65075ef75e2a 100644
+--- a/drivers/iommu/arm-smmu.c
++++ b/drivers/iommu/arm-smmu.c
+@@ -1567,7 +1567,7 @@ static int arm_smmu_device_cfg_probe(struct arm_smmu_device *smmu)
+ return -ENODEV;
+ }
+
+- if ((id & ID0_S1TS) && ((smmu->version == 1) || (id & ID0_ATOSNS))) {
++ if ((id & ID0_S1TS) && ((smmu->version == 1) || !(id & ID0_ATOSNS))) {
+ smmu->features |= ARM_SMMU_FEAT_TRANS_OPS;
+ dev_notice(smmu->dev, "\taddress translation ops\n");
+ }
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index c80287a02735..9231cdfe2757 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -848,7 +848,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
+ int sg_cnt;
+
+ sg_cnt = sdhci_pre_dma_transfer(host, data, NULL);
+- if (sg_cnt == 0) {
++ if (sg_cnt <= 0) {
+ /*
+ * This only happens when someone fed
+ * us an invalid request.
+diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
+index b0f69248cb71..e9b1810d319f 100644
+--- a/drivers/net/can/dev.c
++++ b/drivers/net/can/dev.c
+@@ -440,6 +440,9 @@ unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx)
+ struct can_frame *cf = (struct can_frame *)skb->data;
+ u8 dlc = cf->can_dlc;
+
++ if (!(skb->tstamp.tv64))
++ __net_timestamp(skb);
++
+ netif_rx(priv->echo_skb[idx]);
+ priv->echo_skb[idx] = NULL;
+
+@@ -575,6 +578,7 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
+ if (unlikely(!skb))
+ return NULL;
+
++ __net_timestamp(skb);
+ skb->protocol = htons(ETH_P_CAN);
+ skb->pkt_type = PACKET_BROADCAST;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+@@ -603,6 +607,7 @@ struct sk_buff *alloc_canfd_skb(struct net_device *dev,
+ if (unlikely(!skb))
+ return NULL;
+
++ __net_timestamp(skb);
+ skb->protocol = htons(ETH_P_CANFD);
+ skb->pkt_type = PACKET_BROADCAST;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
+index c837eb91d43e..f64f5290d6f8 100644
+--- a/drivers/net/can/slcan.c
++++ b/drivers/net/can/slcan.c
+@@ -207,6 +207,7 @@ static void slc_bump(struct slcan *sl)
+ if (!skb)
+ return;
+
++ __net_timestamp(skb);
+ skb->dev = sl->dev;
+ skb->protocol = htons(ETH_P_CAN);
+ skb->pkt_type = PACKET_BROADCAST;
+diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c
+index 674f367087c5..0ce868de855d 100644
+--- a/drivers/net/can/vcan.c
++++ b/drivers/net/can/vcan.c
+@@ -78,6 +78,9 @@ static void vcan_rx(struct sk_buff *skb, struct net_device *dev)
+ skb->dev = dev;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
++ if (!(skb->tstamp.tv64))
++ __net_timestamp(skb);
++
+ netif_rx_ni(skb);
+ }
+
+diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
+index d81fc6bd4759..5c92fb71b37e 100644
+--- a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
++++ b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
+@@ -263,7 +263,7 @@ static int xgbe_alloc_pages(struct xgbe_prv_data *pdata,
+ int ret;
+
+ /* Try to obtain pages, decreasing order if necessary */
+- gfp |= __GFP_COLD | __GFP_COMP;
++ gfp |= __GFP_COLD | __GFP_COMP | __GFP_NOWARN;
+ while (order >= 0) {
+ pages = alloc_pages(gfp, order);
+ if (pages)
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+index 33501bcddc48..8a97d28f3d65 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+@@ -9323,7 +9323,8 @@ unload_error:
+ * function stop ramrod is sent, since as part of this ramrod FW access
+ * PTP registers.
+ */
+- bnx2x_stop_ptp(bp);
++ if (bp->flags & PTP_SUPPORTED)
++ bnx2x_stop_ptp(bp);
+
+ /* Disable HW interrupts, NAPI */
+ bnx2x_netif_stop(bp, 1);
+diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
+index ce5f7f9cff06..74d0389bf233 100644
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -310,6 +310,7 @@ struct mvneta_port {
+ unsigned int link;
+ unsigned int duplex;
+ unsigned int speed;
++ unsigned int tx_csum_limit;
+ int use_inband_status:1;
+ };
+
+@@ -1013,6 +1014,12 @@ static void mvneta_defaults_set(struct mvneta_port *pp)
+ val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER);
+ val |= MVNETA_GMAC_1MS_CLOCK_ENABLE;
+ mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val);
++ } else {
++ val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
++ val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE |
++ MVNETA_GMAC_AN_SPEED_EN |
++ MVNETA_GMAC_AN_DUPLEX_EN);
++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
+ }
+
+ mvneta_set_ucast_table(pp, -1);
+@@ -2502,8 +2509,10 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
+
+ dev->mtu = mtu;
+
+- if (!netif_running(dev))
++ if (!netif_running(dev)) {
++ netdev_update_features(dev);
+ return 0;
++ }
+
+ /* The interface is running, so we have to force a
+ * reallocation of the queues
+@@ -2532,9 +2541,26 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
+ mvneta_start_dev(pp);
+ mvneta_port_up(pp);
+
++ netdev_update_features(dev);
++
+ return 0;
+ }
+
++static netdev_features_t mvneta_fix_features(struct net_device *dev,
++ netdev_features_t features)
++{
++ struct mvneta_port *pp = netdev_priv(dev);
++
++ if (pp->tx_csum_limit && dev->mtu > pp->tx_csum_limit) {
++ features &= ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
++ netdev_info(dev,
++ "Disable IP checksum for MTU greater than %dB\n",
++ pp->tx_csum_limit);
++ }
++
++ return features;
++}
++
+ /* Get mac address */
+ static void mvneta_get_mac_addr(struct mvneta_port *pp, unsigned char *addr)
+ {
+@@ -2856,6 +2882,7 @@ static const struct net_device_ops mvneta_netdev_ops = {
+ .ndo_set_rx_mode = mvneta_set_rx_mode,
+ .ndo_set_mac_address = mvneta_set_mac_addr,
+ .ndo_change_mtu = mvneta_change_mtu,
++ .ndo_fix_features = mvneta_fix_features,
+ .ndo_get_stats64 = mvneta_get_stats64,
+ .ndo_do_ioctl = mvneta_ioctl,
+ };
+@@ -3101,6 +3128,9 @@ static int mvneta_probe(struct platform_device *pdev)
+ }
+ }
+
++ if (of_device_is_compatible(dn, "marvell,armada-370-neta"))
++ pp->tx_csum_limit = 1600;
++
+ pp->tx_ring_size = MVNETA_MAX_TXD;
+ pp->rx_ring_size = MVNETA_MAX_RXD;
+
+@@ -3179,6 +3209,7 @@ static int mvneta_remove(struct platform_device *pdev)
+
+ static const struct of_device_id mvneta_match[] = {
+ { .compatible = "marvell,armada-370-neta" },
++ { .compatible = "marvell,armada-xp-neta" },
+ { }
+ };
+ MODULE_DEVICE_TABLE(of, mvneta_match);
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+index cf467a9f6cc7..a5a0b8420d26 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+@@ -1973,10 +1973,6 @@ void mlx4_en_free_resources(struct mlx4_en_priv *priv)
+ mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
+ }
+
+- if (priv->base_tx_qpn) {
+- mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
+- priv->base_tx_qpn = 0;
+- }
+ }
+
+ int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+index 2a77a6b19121..eab4e080ebd2 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+@@ -723,7 +723,7 @@ static int get_fixed_ipv6_csum(__wsum hw_checksum, struct sk_buff *skb,
+ }
+ #endif
+ static int check_csum(struct mlx4_cqe *cqe, struct sk_buff *skb, void *va,
+- int hwtstamp_rx_filter)
++ netdev_features_t dev_features)
+ {
+ __wsum hw_checksum = 0;
+
+@@ -731,14 +731,8 @@ static int check_csum(struct mlx4_cqe *cqe, struct sk_buff *skb, void *va,
+
+ hw_checksum = csum_unfold((__force __sum16)cqe->checksum);
+
+- if (((struct ethhdr *)va)->h_proto == htons(ETH_P_8021Q) &&
+- hwtstamp_rx_filter != HWTSTAMP_FILTER_NONE) {
+- /* next protocol non IPv4 or IPv6 */
+- if (((struct vlan_hdr *)hdr)->h_vlan_encapsulated_proto
+- != htons(ETH_P_IP) &&
+- ((struct vlan_hdr *)hdr)->h_vlan_encapsulated_proto
+- != htons(ETH_P_IPV6))
+- return -1;
++ if (cqe->vlan_my_qpn & cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK) &&
++ !(dev_features & NETIF_F_HW_VLAN_CTAG_RX)) {
+ hw_checksum = get_fixed_vlan_csum(hw_checksum, hdr);
+ hdr += sizeof(struct vlan_hdr);
+ }
+@@ -901,7 +895,8 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
+
+ if (ip_summed == CHECKSUM_COMPLETE) {
+ void *va = skb_frag_address(skb_shinfo(gro_skb)->frags);
+- if (check_csum(cqe, gro_skb, va, ring->hwtstamp_rx_filter)) {
++ if (check_csum(cqe, gro_skb, va,
++ dev->features)) {
+ ip_summed = CHECKSUM_NONE;
+ ring->csum_none++;
+ ring->csum_complete--;
+@@ -956,7 +951,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
+ }
+
+ if (ip_summed == CHECKSUM_COMPLETE) {
+- if (check_csum(cqe, skb, skb->data, ring->hwtstamp_rx_filter)) {
++ if (check_csum(cqe, skb, skb->data, dev->features)) {
+ ip_summed = CHECKSUM_NONE;
+ ring->csum_complete--;
+ ring->csum_none++;
+diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+index 7bed3a88579f..c10d98f6ad96 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
++++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+@@ -66,6 +66,7 @@ int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
+ ring->size = size;
+ ring->size_mask = size - 1;
+ ring->stride = stride;
++ ring->full_size = ring->size - HEADROOM - MAX_DESC_TXBBS;
+
+ tmp = size * sizeof(struct mlx4_en_tx_info);
+ ring->tx_info = kmalloc_node(tmp, GFP_KERNEL | __GFP_NOWARN, node);
+@@ -180,6 +181,7 @@ void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
+ mlx4_bf_free(mdev->dev, &ring->bf);
+ mlx4_qp_remove(mdev->dev, &ring->qp);
+ mlx4_qp_free(mdev->dev, &ring->qp);
++ mlx4_qp_release_range(priv->mdev->dev, ring->qpn, 1);
+ mlx4_en_unmap_buffer(&ring->wqres.buf);
+ mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+ kfree(ring->bounce_buf);
+@@ -231,6 +233,11 @@ void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
+ MLX4_QP_STATE_RST, NULL, 0, 0, &ring->qp);
+ }
+
++static inline bool mlx4_en_is_tx_ring_full(struct mlx4_en_tx_ring *ring)
++{
++ return ring->prod - ring->cons > ring->full_size;
++}
++
+ static void mlx4_en_stamp_wqe(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring, int index,
+ u8 owner)
+@@ -473,11 +480,10 @@ static bool mlx4_en_process_tx_cq(struct net_device *dev,
+
+ netdev_tx_completed_queue(ring->tx_queue, packets, bytes);
+
+- /*
+- * Wakeup Tx queue if this stopped, and at least 1 packet
+- * was completed
++ /* Wakeup Tx queue if this stopped, and ring is not full.
+ */
+- if (netif_tx_queue_stopped(ring->tx_queue) && txbbs_skipped > 0) {
++ if (netif_tx_queue_stopped(ring->tx_queue) &&
++ !mlx4_en_is_tx_ring_full(ring)) {
+ netif_tx_wake_queue(ring->tx_queue);
+ ring->wake_queue++;
+ }
+@@ -921,8 +927,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
+ skb_tx_timestamp(skb);
+
+ /* Check available TXBBs And 2K spare for prefetch */
+- stop_queue = (int)(ring->prod - ring_cons) >
+- ring->size - HEADROOM - MAX_DESC_TXBBS;
++ stop_queue = mlx4_en_is_tx_ring_full(ring);
+ if (unlikely(stop_queue)) {
+ netif_tx_stop_queue(ring->tx_queue);
+ ring->queue_stopped++;
+@@ -991,8 +996,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
+ smp_rmb();
+
+ ring_cons = ACCESS_ONCE(ring->cons);
+- if (unlikely(((int)(ring->prod - ring_cons)) <=
+- ring->size - HEADROOM - MAX_DESC_TXBBS)) {
++ if (unlikely(!mlx4_en_is_tx_ring_full(ring))) {
+ netif_tx_wake_queue(ring->tx_queue);
+ ring->wake_queue++;
+ }
+diff --git a/drivers/net/ethernet/mellanox/mlx4/intf.c b/drivers/net/ethernet/mellanox/mlx4/intf.c
+index 6fce58718837..0d80aed59043 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/intf.c
++++ b/drivers/net/ethernet/mellanox/mlx4/intf.c
+@@ -93,8 +93,14 @@ int mlx4_register_interface(struct mlx4_interface *intf)
+ mutex_lock(&intf_mutex);
+
+ list_add_tail(&intf->list, &intf_list);
+- list_for_each_entry(priv, &dev_list, dev_list)
++ list_for_each_entry(priv, &dev_list, dev_list) {
++ if (mlx4_is_mfunc(&priv->dev) && (intf->flags & MLX4_INTFF_BONDING)) {
++ mlx4_dbg(&priv->dev,
++ "SRIOV, disabling HA mode for intf proto %d\n", intf->protocol);
++ intf->flags &= ~MLX4_INTFF_BONDING;
++ }
+ mlx4_add_device(intf, priv);
++ }
+
+ mutex_unlock(&intf_mutex);
+
+diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+index d021f079f181..909fcf803c54 100644
+--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
++++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+@@ -279,6 +279,7 @@ struct mlx4_en_tx_ring {
+ u32 size; /* number of TXBBs */
+ u32 size_mask;
+ u16 stride;
++ u32 full_size;
+ u16 cqn; /* index of port CQ associated with this ring */
+ u32 buf_size;
+ __be32 doorbell_qpn;
+@@ -579,7 +580,6 @@ struct mlx4_en_priv {
+ int vids[128];
+ bool wol;
+ struct device *ddev;
+- int base_tx_qpn;
+ struct hlist_head mac_hash[MLX4_EN_MAC_HASH_SIZE];
+ struct hwtstamp_config hwtstamp_config;
+
+diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
+index bdfe51fc3a65..d551df62e61a 100644
+--- a/drivers/net/phy/phy_device.c
++++ b/drivers/net/phy/phy_device.c
+@@ -796,10 +796,11 @@ static int genphy_config_advert(struct phy_device *phydev)
+ if (phydev->supported & (SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full)) {
+ adv |= ethtool_adv_to_mii_ctrl1000_t(advertise);
+- if (adv != oldadv)
+- changed = 1;
+ }
+
++ if (adv != oldadv)
++ changed = 1;
++
+ err = phy_write(phydev, MII_CTRL1000, adv);
+ if (err < 0)
+ return err;
+diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
+index 968787abf78d..ec383b0f5443 100644
+--- a/drivers/net/xen-netback/xenbus.c
++++ b/drivers/net/xen-netback/xenbus.c
+@@ -681,6 +681,9 @@ static int xen_register_watchers(struct xenbus_device *dev, struct xenvif *vif)
+ char *node;
+ unsigned maxlen = strlen(dev->nodename) + sizeof("/rate");
+
++ if (vif->credit_watch.node)
++ return -EADDRINUSE;
++
+ node = kmalloc(maxlen, GFP_KERNEL);
+ if (!node)
+ return -ENOMEM;
+@@ -770,6 +773,7 @@ static void connect(struct backend_info *be)
+ }
+
+ xen_net_read_rate(dev, &credit_bytes, &credit_usec);
++ xen_unregister_watchers(be->vif);
+ xen_register_watchers(dev, be->vif);
+ read_xenbus_vif_flags(be);
+
+diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c
+index 6f1fa1773e76..f8d8fdb26b72 100644
+--- a/drivers/s390/kvm/virtio_ccw.c
++++ b/drivers/s390/kvm/virtio_ccw.c
+@@ -65,6 +65,7 @@ struct virtio_ccw_device {
+ bool is_thinint;
+ bool going_away;
+ bool device_lost;
++ unsigned int config_ready;
+ void *airq_info;
+ };
+
+@@ -833,8 +834,11 @@ static void virtio_ccw_get_config(struct virtio_device *vdev,
+ if (ret)
+ goto out_free;
+
+- memcpy(vcdev->config, config_area, sizeof(vcdev->config));
+- memcpy(buf, &vcdev->config[offset], len);
++ memcpy(vcdev->config, config_area, offset + len);
++ if (buf)
++ memcpy(buf, &vcdev->config[offset], len);
++ if (vcdev->config_ready < offset + len)
++ vcdev->config_ready = offset + len;
+
+ out_free:
+ kfree(config_area);
+@@ -857,6 +861,9 @@ static void virtio_ccw_set_config(struct virtio_device *vdev,
+ if (!config_area)
+ goto out_free;
+
++ /* Make sure we don't overwrite fields. */
++ if (vcdev->config_ready < offset)
++ virtio_ccw_get_config(vdev, 0, NULL, offset);
+ memcpy(&vcdev->config[offset], buf, len);
+ /* Write the config area to the host. */
+ memcpy(config_area, vcdev->config, sizeof(vcdev->config));
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 3507f880eb74..45b8c8b338df 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -3435,6 +3435,7 @@ done:
+ static void ffs_closed(struct ffs_data *ffs)
+ {
+ struct ffs_dev *ffs_obj;
++ struct f_fs_opts *opts;
+
+ ENTER();
+ ffs_dev_lock();
+@@ -3449,8 +3450,13 @@ static void ffs_closed(struct ffs_data *ffs)
+ ffs_obj->ffs_closed_callback)
+ ffs_obj->ffs_closed_callback(ffs);
+
+- if (!ffs_obj->opts || ffs_obj->opts->no_configfs
+- || !ffs_obj->opts->func_inst.group.cg_item.ci_parent)
++ if (ffs_obj->opts)
++ opts = ffs_obj->opts;
++ else
++ goto done;
++
++ if (opts->no_configfs || !opts->func_inst.group.cg_item.ci_parent
++ || !atomic_read(&opts->func_inst.group.cg_item.ci_kref.refcount))
+ goto done;
+
+ unregister_gadget_item(ffs_obj->opts->
+diff --git a/fs/dcache.c b/fs/dcache.c
+index 37b5afdaf698..50bb3c207621 100644
+--- a/fs/dcache.c
++++ b/fs/dcache.c
+@@ -2927,17 +2927,6 @@ restart:
+ vfsmnt = &mnt->mnt;
+ continue;
+ }
+- /*
+- * Filesystems needing to implement special "root names"
+- * should do so with ->d_dname()
+- */
+- if (IS_ROOT(dentry) &&
+- (dentry->d_name.len != 1 ||
+- dentry->d_name.name[0] != '/')) {
+- WARN(1, "Root dentry has weird name <%.*s>\n",
+- (int) dentry->d_name.len,
+- dentry->d_name.name);
+- }
+ if (!error)
+ error = is_mounted(vfsmnt) ? 1 : 2;
+ break;
+diff --git a/fs/inode.c b/fs/inode.c
+index ea37cd17b53f..6e342cadef81 100644
+--- a/fs/inode.c
++++ b/fs/inode.c
+@@ -1693,8 +1693,8 @@ int file_remove_suid(struct file *file)
+ error = security_inode_killpriv(dentry);
+ if (!error && killsuid)
+ error = __remove_suid(dentry, killsuid);
+- if (!error && (inode->i_sb->s_flags & MS_NOSEC))
+- inode->i_flags |= S_NOSEC;
++ if (!error)
++ inode_has_no_xattr(inode);
+
+ return error;
+ }
+diff --git a/fs/namespace.c b/fs/namespace.c
+index 1b9e11167bae..1d4a97c573e0 100644
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -3185,11 +3185,15 @@ bool fs_fully_visible(struct file_system_type *type)
+ if (mnt->mnt.mnt_root != mnt->mnt.mnt_sb->s_root)
+ continue;
+
+- /* This mount is not fully visible if there are any child mounts
+- * that cover anything except for empty directories.
++ /* This mount is not fully visible if there are any
++ * locked child mounts that cover anything except for
++ * empty directories.
+ */
+ list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
+ struct inode *inode = child->mnt_mountpoint->d_inode;
++ /* Only worry about locked mounts */
++ if (!(mnt->mnt.mnt_flags & MNT_LOCKED))
++ continue;
+ if (!S_ISDIR(inode->i_mode))
+ goto next;
+ if (inode->i_nlink > 2)
+diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
+index 2c1036080d52..a7106eda5024 100644
+--- a/fs/ufs/balloc.c
++++ b/fs/ufs/balloc.c
+@@ -51,8 +51,8 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
+
+ if (ufs_fragnum(fragment) + count > uspi->s_fpg)
+ ufs_error (sb, "ufs_free_fragments", "internal error");
+-
+- lock_ufs(sb);
++
++ mutex_lock(&UFS_SB(sb)->s_lock);
+
+ cgno = ufs_dtog(uspi, fragment);
+ bit = ufs_dtogd(uspi, fragment);
+@@ -115,13 +115,13 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
+ if (sb->s_flags & MS_SYNCHRONOUS)
+ ubh_sync_block(UCPI_UBH(ucpi));
+ ufs_mark_sb_dirty(sb);
+-
+- unlock_ufs(sb);
++
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ UFSD("EXIT\n");
+ return;
+
+ failed:
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ UFSD("EXIT (FAILED)\n");
+ return;
+ }
+@@ -151,7 +151,7 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count)
+ goto failed;
+ }
+
+- lock_ufs(sb);
++ mutex_lock(&UFS_SB(sb)->s_lock);
+
+ do_more:
+ overflow = 0;
+@@ -211,12 +211,12 @@ do_more:
+ }
+
+ ufs_mark_sb_dirty(sb);
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ UFSD("EXIT\n");
+ return;
+
+ failed_unlock:
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ failed:
+ UFSD("EXIT (FAILED)\n");
+ return;
+@@ -357,7 +357,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ usb1 = ubh_get_usb_first(uspi);
+ *err = -ENOSPC;
+
+- lock_ufs(sb);
++ mutex_lock(&UFS_SB(sb)->s_lock);
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+
+ if (count + ufs_fragnum(fragment) > uspi->s_fpb) {
+@@ -378,19 +378,19 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ "fragment %llu, tmp %llu\n",
+ (unsigned long long)fragment,
+ (unsigned long long)tmp);
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ return INVBLOCK;
+ }
+ if (fragment < UFS_I(inode)->i_lastfrag) {
+ UFSD("EXIT (ALREADY ALLOCATED)\n");
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ return 0;
+ }
+ }
+ else {
+ if (tmp) {
+ UFSD("EXIT (ALREADY ALLOCATED)\n");
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ return 0;
+ }
+ }
+@@ -399,7 +399,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ * There is not enough space for user on the device
+ */
+ if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) {
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ UFSD("EXIT (FAILED)\n");
+ return 0;
+ }
+@@ -424,7 +424,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ ufs_clear_frags(inode, result + oldcount,
+ newcount - oldcount, locked_page != NULL);
+ }
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ UFSD("EXIT, result %llu\n", (unsigned long long)result);
+ return result;
+ }
+@@ -439,7 +439,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ fragment + count);
+ ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
+ locked_page != NULL);
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ UFSD("EXIT, result %llu\n", (unsigned long long)result);
+ return result;
+ }
+@@ -477,7 +477,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ *err = 0;
+ UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag,
+ fragment + count);
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ if (newcount < request)
+ ufs_free_fragments (inode, result + newcount, request - newcount);
+ ufs_free_fragments (inode, tmp, oldcount);
+@@ -485,7 +485,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+ return result;
+ }
+
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ UFSD("EXIT (FAILED)\n");
+ return 0;
+ }
+diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c
+index 7caa01652888..fd0203ce1f7f 100644
+--- a/fs/ufs/ialloc.c
++++ b/fs/ufs/ialloc.c
+@@ -69,11 +69,11 @@ void ufs_free_inode (struct inode * inode)
+
+ ino = inode->i_ino;
+
+- lock_ufs(sb);
++ mutex_lock(&UFS_SB(sb)->s_lock);
+
+ if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) {
+ ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino);
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ return;
+ }
+
+@@ -81,7 +81,7 @@ void ufs_free_inode (struct inode * inode)
+ bit = ufs_inotocgoff (ino);
+ ucpi = ufs_load_cylinder (sb, cg);
+ if (!ucpi) {
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ return;
+ }
+ ucg = ubh_get_ucg(UCPI_UBH(ucpi));
+@@ -115,7 +115,7 @@ void ufs_free_inode (struct inode * inode)
+ ubh_sync_block(UCPI_UBH(ucpi));
+
+ ufs_mark_sb_dirty(sb);
+- unlock_ufs(sb);
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ UFSD("EXIT\n");
+ }
+
+@@ -193,7 +193,7 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode)
+ sbi = UFS_SB(sb);
+ uspi = sbi->s_uspi;
+
+- lock_ufs(sb);
++ mutex_lock(&sbi->s_lock);
+
+ /*
+ * Try to place the inode in its parent directory
+@@ -331,21 +331,21 @@ cg_found:
+ sync_dirty_buffer(bh);
+ brelse(bh);
+ }
+- unlock_ufs(sb);
++ mutex_unlock(&sbi->s_lock);
+
+ UFSD("allocating inode %lu\n", inode->i_ino);
+ UFSD("EXIT\n");
+ return inode;
+
+ fail_remove_inode:
+- unlock_ufs(sb);
++ mutex_unlock(&sbi->s_lock);
+ clear_nlink(inode);
+ unlock_new_inode(inode);
+ iput(inode);
+ UFSD("EXIT (FAILED): err %d\n", err);
+ return ERR_PTR(err);
+ failed:
+- unlock_ufs(sb);
++ mutex_unlock(&sbi->s_lock);
+ make_bad_inode(inode);
+ iput (inode);
+ UFSD("EXIT (FAILED): err %d\n", err);
+diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
+index be7d42c7d938..2d93ab07da8a 100644
+--- a/fs/ufs/inode.c
++++ b/fs/ufs/inode.c
+@@ -902,6 +902,9 @@ void ufs_evict_inode(struct inode * inode)
+ invalidate_inode_buffers(inode);
+ clear_inode(inode);
+
+- if (want_delete)
++ if (want_delete) {
++ lock_ufs(inode->i_sb);
+ ufs_free_inode(inode);
++ unlock_ufs(inode->i_sb);
++ }
+ }
+diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
+index e491a93a7e9a..60ee32249b72 100644
+--- a/fs/ufs/namei.c
++++ b/fs/ufs/namei.c
+@@ -128,12 +128,12 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry,
+ if (l > sb->s_blocksize)
+ goto out_notlocked;
+
++ lock_ufs(dir->i_sb);
+ inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
+ err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+- goto out_notlocked;
++ goto out;
+
+- lock_ufs(dir->i_sb);
+ if (l > UFS_SB(sb)->s_uspi->s_maxsymlinklen) {
+ /* slow symlink */
+ inode->i_op = &ufs_symlink_inode_operations;
+@@ -174,7 +174,12 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir,
+ inode_inc_link_count(inode);
+ ihold(inode);
+
+- error = ufs_add_nondir(dentry, inode);
++ error = ufs_add_link(dentry, inode);
++ if (error) {
++ inode_dec_link_count(inode);
++ iput(inode);
++ } else
++ d_instantiate(dentry, inode);
+ unlock_ufs(dir->i_sb);
+ return error;
+ }
+@@ -184,9 +189,13 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
+ struct inode * inode;
+ int err;
+
++ lock_ufs(dir->i_sb);
++ inode_inc_link_count(dir);
++
+ inode = ufs_new_inode(dir, S_IFDIR|mode);
++ err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+- return PTR_ERR(inode);
++ goto out_dir;
+
+ inode->i_op = &ufs_dir_inode_operations;
+ inode->i_fop = &ufs_dir_operations;
+@@ -194,9 +203,6 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
+
+ inode_inc_link_count(inode);
+
+- lock_ufs(dir->i_sb);
+- inode_inc_link_count(dir);
+-
+ err = ufs_make_empty(inode, dir);
+ if (err)
+ goto out_fail;
+@@ -206,6 +212,7 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
+ goto out_fail;
+ unlock_ufs(dir->i_sb);
+
++ unlock_new_inode(inode);
+ d_instantiate(dentry, inode);
+ out:
+ return err;
+@@ -215,6 +222,7 @@ out_fail:
+ inode_dec_link_count(inode);
+ unlock_new_inode(inode);
+ iput (inode);
++out_dir:
+ inode_dec_link_count(dir);
+ unlock_ufs(dir->i_sb);
+ goto out;
+diff --git a/fs/ufs/super.c b/fs/ufs/super.c
+index b3bc3e7ae79d..dc33f9416340 100644
+--- a/fs/ufs/super.c
++++ b/fs/ufs/super.c
+@@ -694,6 +694,7 @@ static int ufs_sync_fs(struct super_block *sb, int wait)
+ unsigned flags;
+
+ lock_ufs(sb);
++ mutex_lock(&UFS_SB(sb)->s_lock);
+
+ UFSD("ENTER\n");
+
+@@ -711,6 +712,7 @@ static int ufs_sync_fs(struct super_block *sb, int wait)
+ ufs_put_cstotal(sb);
+
+ UFSD("EXIT\n");
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+
+ return 0;
+@@ -799,6 +801,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
+ UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
+
+ mutex_init(&sbi->mutex);
++ mutex_init(&sbi->s_lock);
+ spin_lock_init(&sbi->work_lock);
+ INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
+ /*
+@@ -1277,6 +1280,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+
+ sync_filesystem(sb);
+ lock_ufs(sb);
++ mutex_lock(&UFS_SB(sb)->s_lock);
+ uspi = UFS_SB(sb)->s_uspi;
+ flags = UFS_SB(sb)->s_flags;
+ usb1 = ubh_get_usb_first(uspi);
+@@ -1290,6 +1294,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ new_mount_opt = 0;
+ ufs_set_opt (new_mount_opt, ONERROR_LOCK);
+ if (!ufs_parse_options (data, &new_mount_opt)) {
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ }
+@@ -1297,12 +1302,14 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ new_mount_opt |= ufstype;
+ } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
+ pr_err("ufstype can't be changed during remount\n");
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ }
+
+ if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
+ UFS_SB(sb)->s_mount_opt = new_mount_opt;
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return 0;
+ }
+@@ -1326,6 +1333,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ */
+ #ifndef CONFIG_UFS_FS_WRITE
+ pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ #else
+@@ -1335,11 +1343,13 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
+ ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
+ pr_err("this ufstype is read-only supported\n");
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ }
+ if (!ufs_read_cylinder_structures(sb)) {
+ pr_err("failed during remounting\n");
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EPERM;
+ }
+@@ -1347,6 +1357,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+ #endif
+ }
+ UFS_SB(sb)->s_mount_opt = new_mount_opt;
++ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return 0;
+ }
+diff --git a/fs/ufs/ufs.h b/fs/ufs/ufs.h
+index 2a07396d5f9e..cf6368d42d4a 100644
+--- a/fs/ufs/ufs.h
++++ b/fs/ufs/ufs.h
+@@ -30,6 +30,7 @@ struct ufs_sb_info {
+ int work_queued; /* non-zero if the delayed work is queued */
+ struct delayed_work sync_work; /* FS sync delayed work */
+ spinlock_t work_lock; /* protects sync_work and work_queued */
++ struct mutex s_lock;
+ };
+
+ struct ufs_inode_info {
+diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h
+index 3573a81815ad..8ba379f9e467 100644
+--- a/include/net/netns/sctp.h
++++ b/include/net/netns/sctp.h
+@@ -31,6 +31,7 @@ struct netns_sctp {
+ struct list_head addr_waitq;
+ struct timer_list addr_wq_timer;
+ struct list_head auto_asconf_splist;
++ /* Lock that protects both addr_waitq and auto_asconf_splist */
+ spinlock_t addr_wq_lock;
+
+ /* Lock that protects the local_addr_list writers */
+diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
+index 2bb2fcf5b11f..495c87e367b3 100644
+--- a/include/net/sctp/structs.h
++++ b/include/net/sctp/structs.h
+@@ -223,6 +223,10 @@ struct sctp_sock {
+ atomic_t pd_mode;
+ /* Receive to here while partial delivery is in effect. */
+ struct sk_buff_head pd_lobby;
++
++ /* These must be the last fields, as they will skipped on copies,
++ * like on accept and peeloff operations
++ */
+ struct list_head auto_asconf_list;
+ int do_auto_asconf;
+ };
+diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
+index a9a4a1b7863d..8d423bc649b9 100644
+--- a/net/bridge/br_ioctl.c
++++ b/net/bridge/br_ioctl.c
+@@ -247,9 +247,7 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+ if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN))
+ return -EPERM;
+
+- spin_lock_bh(&br->lock);
+ br_stp_set_bridge_priority(br, args[1]);
+- spin_unlock_bh(&br->lock);
+ return 0;
+
+ case BRCTL_SET_PORT_PRIORITY:
+diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
+index 41146872c1b4..7832d07f48f6 100644
+--- a/net/bridge/br_stp_if.c
++++ b/net/bridge/br_stp_if.c
+@@ -243,12 +243,13 @@ bool br_stp_recalculate_bridge_id(struct net_bridge *br)
+ return true;
+ }
+
+-/* called under bridge lock */
++/* Acquires and releases bridge lock */
+ void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio)
+ {
+ struct net_bridge_port *p;
+ int wasroot;
+
++ spin_lock_bh(&br->lock);
+ wasroot = br_is_root_bridge(br);
+
+ list_for_each_entry(p, &br->port_list, list) {
+@@ -266,6 +267,7 @@ void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio)
+ br_port_state_selection(br);
+ if (br_is_root_bridge(br) && !wasroot)
+ br_become_root_bridge(br);
++ spin_unlock_bh(&br->lock);
+ }
+
+ /* called under bridge lock */
+diff --git a/net/can/af_can.c b/net/can/af_can.c
+index 32d710eaf1fc..689c818ed007 100644
+--- a/net/can/af_can.c
++++ b/net/can/af_can.c
+@@ -310,8 +310,12 @@ int can_send(struct sk_buff *skb, int loop)
+ return err;
+ }
+
+- if (newskb)
++ if (newskb) {
++ if (!(newskb->tstamp.tv64))
++ __net_timestamp(newskb);
++
+ netif_rx_ni(newskb);
++ }
+
+ /* update statistics */
+ can_stats.tx_frames++;
+diff --git a/net/core/neighbour.c b/net/core/neighbour.c
+index 3de654256028..2237c1b3cdd2 100644
+--- a/net/core/neighbour.c
++++ b/net/core/neighbour.c
+@@ -957,6 +957,8 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
+ rc = 0;
+ if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
+ goto out_unlock_bh;
++ if (neigh->dead)
++ goto out_dead;
+
+ if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
+ if (NEIGH_VAR(neigh->parms, MCAST_PROBES) +
+@@ -1013,6 +1015,13 @@ out_unlock_bh:
+ write_unlock(&neigh->lock);
+ local_bh_enable();
+ return rc;
++
++out_dead:
++ if (neigh->nud_state & NUD_STALE)
++ goto out_unlock_bh;
++ write_unlock_bh(&neigh->lock);
++ kfree_skb(skb);
++ return 1;
+ }
+ EXPORT_SYMBOL(__neigh_event_send);
+
+@@ -1076,6 +1085,8 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
+ if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
+ (old & (NUD_NOARP | NUD_PERMANENT)))
+ goto out;
++ if (neigh->dead)
++ goto out;
+
+ if (!(new & NUD_VALID)) {
+ neigh_del_timer(neigh);
+@@ -1225,6 +1236,8 @@ EXPORT_SYMBOL(neigh_update);
+ */
+ void __neigh_set_probe_once(struct neighbour *neigh)
+ {
++ if (neigh->dead)
++ return;
+ neigh->updated = jiffies;
+ if (!(neigh->nud_state & NUD_FAILED))
+ return;
+diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
+index 8b47a4d79d04..a5aa54ea6533 100644
+--- a/net/ipv4/af_inet.c
++++ b/net/ipv4/af_inet.c
+@@ -228,6 +228,8 @@ int inet_listen(struct socket *sock, int backlog)
+ err = 0;
+ if (err)
+ goto out;
++
++ tcp_fastopen_init_key_once(true);
+ }
+ err = inet_csk_listen_start(sk, backlog);
+ if (err)
+diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
+index 7cfb0893f263..6ddde89996f4 100644
+--- a/net/ipv4/ip_sockglue.c
++++ b/net/ipv4/ip_sockglue.c
+@@ -432,6 +432,15 @@ void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 inf
+ kfree_skb(skb);
+ }
+
++/* For some errors we have valid addr_offset even with zero payload and
++ * zero port. Also, addr_offset should be supported if port is set.
++ */
++static inline bool ipv4_datagram_support_addr(struct sock_exterr_skb *serr)
++{
++ return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP ||
++ serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port;
++}
++
+ /* IPv4 supports cmsg on all imcp errors and some timestamps
+ *
+ * Timestamp code paths do not initialize the fields expected by cmsg:
+@@ -498,7 +507,7 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
+
+ serr = SKB_EXT_ERR(skb);
+
+- if (sin && serr->port) {
++ if (sin && ipv4_datagram_support_addr(serr)) {
+ sin->sin_family = AF_INET;
+ sin->sin_addr.s_addr = *(__be32 *)(skb_network_header(skb) +
+ serr->addr_offset);
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index f1377f2a0472..bb2ce74f6004 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -2545,10 +2545,13 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
+
+ case TCP_FASTOPEN:
+ if (val >= 0 && ((1 << sk->sk_state) & (TCPF_CLOSE |
+- TCPF_LISTEN)))
++ TCPF_LISTEN))) {
++ tcp_fastopen_init_key_once(true);
++
+ err = fastopen_init_queue(sk, val);
+- else
++ } else {
+ err = -EINVAL;
++ }
+ break;
+ case TCP_TIMESTAMP:
+ if (!tp->repair)
+diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c
+index 46b087a27503..f9c0fb84e435 100644
+--- a/net/ipv4/tcp_fastopen.c
++++ b/net/ipv4/tcp_fastopen.c
+@@ -78,8 +78,6 @@ static bool __tcp_fastopen_cookie_gen(const void *path,
+ struct tcp_fastopen_context *ctx;
+ bool ok = false;
+
+- tcp_fastopen_init_key_once(true);
+-
+ rcu_read_lock();
+ ctx = rcu_dereference(tcp_fastopen_ctx);
+ if (ctx) {
+diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
+index 762a58c772b8..62d908e64eeb 100644
+--- a/net/ipv6/datagram.c
++++ b/net/ipv6/datagram.c
+@@ -325,6 +325,16 @@ void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu)
+ kfree_skb(skb);
+ }
+
++/* For some errors we have valid addr_offset even with zero payload and
++ * zero port. Also, addr_offset should be supported if port is set.
++ */
++static inline bool ipv6_datagram_support_addr(struct sock_exterr_skb *serr)
++{
++ return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6 ||
++ serr->ee.ee_origin == SO_EE_ORIGIN_ICMP ||
++ serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port;
++}
++
+ /* IPv6 supports cmsg on all origins aside from SO_EE_ORIGIN_LOCAL.
+ *
+ * At one point, excluding local errors was a quick test to identify icmp/icmp6
+@@ -389,7 +399,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
+
+ serr = SKB_EXT_ERR(skb);
+
+- if (sin && serr->port) {
++ if (sin && ipv6_datagram_support_addr(serr)) {
+ const unsigned char *nh = skb_network_header(skb);
+ sin->sin6_family = AF_INET6;
+ sin->sin6_flowinfo = 0;
+diff --git a/net/mac80211/key.c b/net/mac80211/key.c
+index a907f2d5c12d..81e9785f38bc 100644
+--- a/net/mac80211/key.c
++++ b/net/mac80211/key.c
+@@ -66,12 +66,15 @@ update_vlan_tailroom_need_count(struct ieee80211_sub_if_data *sdata, int delta)
+ if (sdata->vif.type != NL80211_IFTYPE_AP)
+ return;
+
+- mutex_lock(&sdata->local->mtx);
++ /* crypto_tx_tailroom_needed_cnt is protected by this */
++ assert_key_lock(sdata->local);
++
++ rcu_read_lock();
+
+- list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
++ list_for_each_entry_rcu(vlan, &sdata->u.ap.vlans, u.vlan.list)
+ vlan->crypto_tx_tailroom_needed_cnt += delta;
+
+- mutex_unlock(&sdata->local->mtx);
++ rcu_read_unlock();
+ }
+
+ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
+@@ -95,6 +98,8 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
+ * http://mid.gmane.org/1308590980.4322.19.camel@jlt3.sipsolutions.net
+ */
+
++ assert_key_lock(sdata->local);
++
+ update_vlan_tailroom_need_count(sdata, 1);
+
+ if (!sdata->crypto_tx_tailroom_needed_cnt++) {
+@@ -109,6 +114,8 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
+ static void decrease_tailroom_need_count(struct ieee80211_sub_if_data *sdata,
+ int delta)
+ {
++ assert_key_lock(sdata->local);
++
+ WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt < delta);
+
+ update_vlan_tailroom_need_count(sdata, -delta);
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index b5989c6ee551..fe1610ddeacf 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -1272,16 +1272,6 @@ static void packet_sock_destruct(struct sock *sk)
+ sk_refcnt_debug_dec(sk);
+ }
+
+-static int fanout_rr_next(struct packet_fanout *f, unsigned int num)
+-{
+- int x = atomic_read(&f->rr_cur) + 1;
+-
+- if (x >= num)
+- x = 0;
+-
+- return x;
+-}
+-
+ static unsigned int fanout_demux_hash(struct packet_fanout *f,
+ struct sk_buff *skb,
+ unsigned int num)
+@@ -1293,13 +1283,9 @@ static unsigned int fanout_demux_lb(struct packet_fanout *f,
+ struct sk_buff *skb,
+ unsigned int num)
+ {
+- int cur, old;
++ unsigned int val = atomic_inc_return(&f->rr_cur);
+
+- cur = atomic_read(&f->rr_cur);
+- while ((old = atomic_cmpxchg(&f->rr_cur, cur,
+- fanout_rr_next(f, num))) != cur)
+- cur = old;
+- return cur;
++ return val % num;
+ }
+
+ static unsigned int fanout_demux_cpu(struct packet_fanout *f,
+@@ -1353,7 +1339,7 @@ static int packet_rcv_fanout(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt, struct net_device *orig_dev)
+ {
+ struct packet_fanout *f = pt->af_packet_priv;
+- unsigned int num = f->num_members;
++ unsigned int num = READ_ONCE(f->num_members);
+ struct packet_sock *po;
+ unsigned int idx;
+
+diff --git a/net/sctp/output.c b/net/sctp/output.c
+index fc5e45b8a832..abe7c2db2412 100644
+--- a/net/sctp/output.c
++++ b/net/sctp/output.c
+@@ -599,7 +599,9 @@ out:
+ return err;
+ no_route:
+ kfree_skb(nskb);
+- IP_INC_STATS(sock_net(asoc->base.sk), IPSTATS_MIB_OUTNOROUTES);
++
++ if (asoc)
++ IP_INC_STATS(sock_net(asoc->base.sk), IPSTATS_MIB_OUTNOROUTES);
+
+ /* FIXME: Returning the 'err' will effect all the associations
+ * associated with a socket, although only one of the paths of the
+diff --git a/net/sctp/socket.c b/net/sctp/socket.c
+index f09de7fac2e6..5f6c4e61325b 100644
+--- a/net/sctp/socket.c
++++ b/net/sctp/socket.c
+@@ -1528,8 +1528,10 @@ static void sctp_close(struct sock *sk, long timeout)
+
+ /* Supposedly, no process has access to the socket, but
+ * the net layers still may.
++ * Also, sctp_destroy_sock() needs to be called with addr_wq_lock
++ * held and that should be grabbed before socket lock.
+ */
+- local_bh_disable();
++ spin_lock_bh(&net->sctp.addr_wq_lock);
+ bh_lock_sock(sk);
+
+ /* Hold the sock, since sk_common_release() will put sock_put()
+@@ -1539,7 +1541,7 @@ static void sctp_close(struct sock *sk, long timeout)
+ sk_common_release(sk);
+
+ bh_unlock_sock(sk);
+- local_bh_enable();
++ spin_unlock_bh(&net->sctp.addr_wq_lock);
+
+ sock_put(sk);
+
+@@ -3580,6 +3582,7 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
+ if ((val && sp->do_auto_asconf) || (!val && !sp->do_auto_asconf))
+ return 0;
+
++ spin_lock_bh(&sock_net(sk)->sctp.addr_wq_lock);
+ if (val == 0 && sp->do_auto_asconf) {
+ list_del(&sp->auto_asconf_list);
+ sp->do_auto_asconf = 0;
+@@ -3588,6 +3591,7 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
+ &sock_net(sk)->sctp.auto_asconf_splist);
+ sp->do_auto_asconf = 1;
+ }
++ spin_unlock_bh(&sock_net(sk)->sctp.addr_wq_lock);
+ return 0;
+ }
+
+@@ -4121,18 +4125,28 @@ static int sctp_init_sock(struct sock *sk)
+ local_bh_disable();
+ percpu_counter_inc(&sctp_sockets_allocated);
+ sock_prot_inuse_add(net, sk->sk_prot, 1);
++
++ /* Nothing can fail after this block, otherwise
++ * sctp_destroy_sock() will be called without addr_wq_lock held
++ */
+ if (net->sctp.default_auto_asconf) {
++ spin_lock(&sock_net(sk)->sctp.addr_wq_lock);
+ list_add_tail(&sp->auto_asconf_list,
+ &net->sctp.auto_asconf_splist);
+ sp->do_auto_asconf = 1;
+- } else
++ spin_unlock(&sock_net(sk)->sctp.addr_wq_lock);
++ } else {
+ sp->do_auto_asconf = 0;
++ }
++
+ local_bh_enable();
+
+ return 0;
+ }
+
+-/* Cleanup any SCTP per socket resources. */
++/* Cleanup any SCTP per socket resources. Must be called with
++ * sock_net(sk)->sctp.addr_wq_lock held if sp->do_auto_asconf is true
++ */
+ static void sctp_destroy_sock(struct sock *sk)
+ {
+ struct sctp_sock *sp;
+@@ -7195,6 +7209,19 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
+ newinet->mc_list = NULL;
+ }
+
++static inline void sctp_copy_descendant(struct sock *sk_to,
++ const struct sock *sk_from)
++{
++ int ancestor_size = sizeof(struct inet_sock) +
++ sizeof(struct sctp_sock) -
++ offsetof(struct sctp_sock, auto_asconf_list);
++
++ if (sk_from->sk_family == PF_INET6)
++ ancestor_size += sizeof(struct ipv6_pinfo);
++
++ __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
++}
++
+ /* Populate the fields of the newsk from the oldsk and migrate the assoc
+ * and its messages to the newsk.
+ */
+@@ -7209,7 +7236,6 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
+ struct sk_buff *skb, *tmp;
+ struct sctp_ulpevent *event;
+ struct sctp_bind_hashbucket *head;
+- struct list_head tmplist;
+
+ /* Migrate socket buffer sizes and all the socket level options to the
+ * new socket.
+@@ -7217,12 +7243,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
+ newsk->sk_sndbuf = oldsk->sk_sndbuf;
+ newsk->sk_rcvbuf = oldsk->sk_rcvbuf;
+ /* Brute force copy old sctp opt. */
+- if (oldsp->do_auto_asconf) {
+- memcpy(&tmplist, &newsp->auto_asconf_list, sizeof(tmplist));
+- inet_sk_copy_descendant(newsk, oldsk);
+- memcpy(&newsp->auto_asconf_list, &tmplist, sizeof(tmplist));
+- } else
+- inet_sk_copy_descendant(newsk, oldsk);
++ sctp_copy_descendant(newsk, oldsk);
+
+ /* Restore the ep value that was overwritten with the above structure
+ * copy.
+diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
+index 7dade28affba..212070e1de1a 100644
+--- a/security/selinux/hooks.c
++++ b/security/selinux/hooks.c
+@@ -403,6 +403,7 @@ static int selinux_is_sblabel_mnt(struct super_block *sb)
+ return sbsec->behavior == SECURITY_FS_USE_XATTR ||
+ sbsec->behavior == SECURITY_FS_USE_TRANS ||
+ sbsec->behavior == SECURITY_FS_USE_TASK ||
++ sbsec->behavior == SECURITY_FS_USE_NATIVE ||
+ /* Special handling. Genfs but also in-core setxattr handler */
+ !strcmp(sb->s_type->name, "sysfs") ||
+ !strcmp(sb->s_type->name, "pstore") ||
+diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
+index 78fb8201014f..950064a0942d 100644
+--- a/virt/kvm/arm/vgic.c
++++ b/virt/kvm/arm/vgic.c
+@@ -1561,7 +1561,7 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
+ goto out;
+ }
+
+- if (irq_num >= kvm->arch.vgic.nr_irqs)
++ if (irq_num >= min(kvm->arch.vgic.nr_irqs, 1020))
+ return -EINVAL;
+
+ vcpu_id = vgic_update_irq_pending(kvm, cpuid, irq_num, level);
+@@ -2161,10 +2161,7 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id,
+
+ BUG_ON(!vgic_initialized(kvm));
+
+- if (spi > kvm->arch.vgic.nr_irqs)
+- return -EINVAL;
+ return kvm_vgic_inject_irq(kvm, 0, spi, level);
+-
+ }
+
+ /* MSI not implemented yet */
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-07-01 15:33 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-07-01 15:33 UTC (permalink / raw
To: gentoo-commits
commit: b441dda5fa50d4b8c51ccf0641501d3574851296
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Jul 1 15:33:29 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Jul 1 15:33:29 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=b441dda5
Add the 4.1.1 patchset. For real this time.
0000_README | 4 +
1000_linux-4.1.1.patch | 388 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 392 insertions(+)
diff --git a/0000_README b/0000_README
index dd82b40..8bf61f5 100644
--- a/0000_README
+++ b/0000_README
@@ -43,6 +43,10 @@ EXPERIMENTAL
Individual Patch Descriptions:
--------------------------------------------------------------------------
+Patch: 1000_linux-4.1.1.patch
+From: http://www.kernel.org
+Desc: Linux 4.1.1
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1000_linux-4.1.1.patch b/1000_linux-4.1.1.patch
new file mode 100644
index 0000000..658aefa
--- /dev/null
+++ b/1000_linux-4.1.1.patch
@@ -0,0 +1,388 @@
+diff --git a/Makefile b/Makefile
+index f5c8983aeeb7..1caf4ad3eb8a 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,8 +1,8 @@
+ VERSION = 4
+ PATCHLEVEL = 1
+-SUBLEVEL = 0
++SUBLEVEL = 1
+ EXTRAVERSION =
+-NAME = Hurr durr I'ma sheep
++NAME = Series 4800
+
+ # *DOCUMENTATION*
+ # To see a list of typical targets execute "make help"
+diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
+index 4f7001f28936..aa4e3a74e541 100644
+--- a/arch/x86/kernel/cpu/perf_event.c
++++ b/arch/x86/kernel/cpu/perf_event.c
+@@ -270,11 +270,7 @@ msr_fail:
+
+ static void hw_perf_event_destroy(struct perf_event *event)
+ {
+- if (atomic_dec_and_mutex_lock(&active_events, &pmc_reserve_mutex)) {
+- release_pmc_hardware();
+- release_ds_buffers();
+- mutex_unlock(&pmc_reserve_mutex);
+- }
++ x86_release_hardware();
+ }
+
+ void hw_perf_lbr_event_destroy(struct perf_event *event)
+@@ -324,6 +320,35 @@ set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event *event)
+ return x86_pmu_extra_regs(val, event);
+ }
+
++int x86_reserve_hardware(void)
++{
++ int err = 0;
++
++ if (!atomic_inc_not_zero(&active_events)) {
++ mutex_lock(&pmc_reserve_mutex);
++ if (atomic_read(&active_events) == 0) {
++ if (!reserve_pmc_hardware())
++ err = -EBUSY;
++ else
++ reserve_ds_buffers();
++ }
++ if (!err)
++ atomic_inc(&active_events);
++ mutex_unlock(&pmc_reserve_mutex);
++ }
++
++ return err;
++}
++
++void x86_release_hardware(void)
++{
++ if (atomic_dec_and_mutex_lock(&active_events, &pmc_reserve_mutex)) {
++ release_pmc_hardware();
++ release_ds_buffers();
++ mutex_unlock(&pmc_reserve_mutex);
++ }
++}
++
+ /*
+ * Check if we can create event of a certain type (that no conflicting events
+ * are present).
+@@ -336,9 +361,10 @@ int x86_add_exclusive(unsigned int what)
+ return 0;
+
+ mutex_lock(&pmc_reserve_mutex);
+- for (i = 0; i < ARRAY_SIZE(x86_pmu.lbr_exclusive); i++)
++ for (i = 0; i < ARRAY_SIZE(x86_pmu.lbr_exclusive); i++) {
+ if (i != what && atomic_read(&x86_pmu.lbr_exclusive[i]))
+ goto out;
++ }
+
+ atomic_inc(&x86_pmu.lbr_exclusive[what]);
+ ret = 0;
+@@ -527,19 +553,7 @@ static int __x86_pmu_event_init(struct perf_event *event)
+ if (!x86_pmu_initialized())
+ return -ENODEV;
+
+- err = 0;
+- if (!atomic_inc_not_zero(&active_events)) {
+- mutex_lock(&pmc_reserve_mutex);
+- if (atomic_read(&active_events) == 0) {
+- if (!reserve_pmc_hardware())
+- err = -EBUSY;
+- else
+- reserve_ds_buffers();
+- }
+- if (!err)
+- atomic_inc(&active_events);
+- mutex_unlock(&pmc_reserve_mutex);
+- }
++ err = x86_reserve_hardware();
+ if (err)
+ return err;
+
+diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h
+index ef78516850fb..f068695eaca0 100644
+--- a/arch/x86/kernel/cpu/perf_event.h
++++ b/arch/x86/kernel/cpu/perf_event.h
+@@ -703,6 +703,10 @@ int x86_add_exclusive(unsigned int what);
+
+ void x86_del_exclusive(unsigned int what);
+
++int x86_reserve_hardware(void);
++
++void x86_release_hardware(void);
++
+ void hw_perf_lbr_event_destroy(struct perf_event *event);
+
+ int x86_setup_perfctr(struct perf_event *event);
+diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
+index a1e35c9f06b9..2813ea0f142e 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel.c
++++ b/arch/x86/kernel/cpu/perf_event_intel.c
+@@ -3253,6 +3253,8 @@ __init int intel_pmu_init(void)
+
+ case 61: /* 14nm Broadwell Core-M */
+ case 86: /* 14nm Broadwell Xeon D */
++ case 71: /* 14nm Broadwell + GT3e (Intel Iris Pro graphics) */
++ case 79: /* 14nm Broadwell Server */
+ x86_pmu.late_ack = true;
+ memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
+ memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
+@@ -3322,13 +3324,13 @@ __init int intel_pmu_init(void)
+ * counter, so do not extend mask to generic counters
+ */
+ for_each_event_constraint(c, x86_pmu.event_constraints) {
+- if (c->cmask != FIXED_EVENT_FLAGS
+- || c->idxmsk64 == INTEL_PMC_MSK_FIXED_REF_CYCLES) {
+- continue;
++ if (c->cmask == FIXED_EVENT_FLAGS
++ && c->idxmsk64 != INTEL_PMC_MSK_FIXED_REF_CYCLES) {
++ c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
+ }
+-
+- c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
+- c->weight += x86_pmu.num_counters;
++ c->idxmsk64 &=
++ ~(~0UL << (INTEL_PMC_IDX_FIXED + x86_pmu.num_counters_fixed));
++ c->weight = hweight64(c->idxmsk64);
+ }
+ }
+
+diff --git a/arch/x86/kernel/cpu/perf_event_intel_bts.c b/arch/x86/kernel/cpu/perf_event_intel_bts.c
+index ac1f0c55f379..7795f3f8b1d5 100644
+--- a/arch/x86/kernel/cpu/perf_event_intel_bts.c
++++ b/arch/x86/kernel/cpu/perf_event_intel_bts.c
+@@ -483,17 +483,26 @@ static int bts_event_add(struct perf_event *event, int mode)
+
+ static void bts_event_destroy(struct perf_event *event)
+ {
++ x86_release_hardware();
+ x86_del_exclusive(x86_lbr_exclusive_bts);
+ }
+
+ static int bts_event_init(struct perf_event *event)
+ {
++ int ret;
++
+ if (event->attr.type != bts_pmu.type)
+ return -ENOENT;
+
+ if (x86_add_exclusive(x86_lbr_exclusive_bts))
+ return -EBUSY;
+
++ ret = x86_reserve_hardware();
++ if (ret) {
++ x86_del_exclusive(x86_lbr_exclusive_bts);
++ return ret;
++ }
++
+ event->destroy = bts_event_destroy;
+
+ return 0;
+diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
+index 53eeb226657c..7e429c99c728 100644
+--- a/arch/x86/kernel/head_32.S
++++ b/arch/x86/kernel/head_32.S
+@@ -62,9 +62,16 @@
+ #define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
+ #endif
+
+-/* Number of possible pages in the lowmem region */
+-LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT)
+-
++/*
++ * Number of possible pages in the lowmem region.
++ *
++ * We shift 2 by 31 instead of 1 by 32 to the left in order to avoid a
++ * gas warning about overflowing shift count when gas has been compiled
++ * with only a host target support using a 32-bit type for internal
++ * representation.
++ */
++LOWMEM_PAGES = (((2<<31) - __PAGE_OFFSET) >> PAGE_SHIFT)
++
+ /* Enough space to fit pagetables for the low memory linear map */
+ MAPPING_BEYOND_END = PAGE_TABLE_SIZE(LOWMEM_PAGES) << PAGE_SHIFT
+
+diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
+index 8c81af6dbe06..e527a3e13939 100644
+--- a/drivers/bluetooth/ath3k.c
++++ b/drivers/bluetooth/ath3k.c
+@@ -80,6 +80,7 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x0489, 0xe057) },
+ { USB_DEVICE(0x0489, 0xe056) },
+ { USB_DEVICE(0x0489, 0xe05f) },
++ { USB_DEVICE(0x0489, 0xe076) },
+ { USB_DEVICE(0x0489, 0xe078) },
+ { USB_DEVICE(0x04c5, 0x1330) },
+ { USB_DEVICE(0x04CA, 0x3004) },
+@@ -88,6 +89,7 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x04CA, 0x3007) },
+ { USB_DEVICE(0x04CA, 0x3008) },
+ { USB_DEVICE(0x04CA, 0x300b) },
++ { USB_DEVICE(0x04CA, 0x300d) },
+ { USB_DEVICE(0x04CA, 0x300f) },
+ { USB_DEVICE(0x04CA, 0x3010) },
+ { USB_DEVICE(0x0930, 0x0219) },
+@@ -113,6 +115,7 @@ static const struct usb_device_id ath3k_table[] = {
+ { USB_DEVICE(0x13d3, 0x3408) },
+ { USB_DEVICE(0x13d3, 0x3423) },
+ { USB_DEVICE(0x13d3, 0x3432) },
++ { USB_DEVICE(0x13d3, 0x3474) },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE02C) },
+@@ -137,6 +140,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+@@ -145,6 +149,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+@@ -170,6 +175,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
+ { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU22 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index 3c10d4dfe9a7..420cc9f3eb76 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -178,6 +178,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+@@ -186,6 +187,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+@@ -211,6 +213,7 @@ static const struct usb_device_id blacklist_table[] = {
+ { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
++ { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
+diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
+index b2f9521fe551..4cdac7801c8b 100644
+--- a/drivers/net/wireless/b43/main.c
++++ b/drivers/net/wireless/b43/main.c
+@@ -5365,6 +5365,10 @@ static void b43_supported_bands(struct b43_wldev *dev, bool *have_2ghz_phy,
+ *have_5ghz_phy = true;
+ return;
+ case 0x4321: /* BCM4306 */
++ /* There are 14e4:4321 PCI devs with 2.4 GHz BCM4321 (N-PHY) */
++ if (dev->phy.type != B43_PHYTYPE_G)
++ break;
++ /* fall through */
+ case 0x4313: /* BCM4311 */
+ case 0x431a: /* BCM4318 */
+ case 0x432a: /* BCM4321 */
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index 5c8f58114677..a086e1d69bc7 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1477,6 +1477,11 @@ skip_countries:
+ goto alloc_fail8;
+ }
+
++ if (quirks & CLEAR_HALT_CONDITIONS) {
++ usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress));
++ usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress));
++ }
++
+ return 0;
+ alloc_fail8:
+ if (acm->country_codes) {
+@@ -1756,6 +1761,10 @@ static const struct usb_device_id acm_ids[] = {
+ .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
+ },
+
++ { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
++ .driver_info = CLEAR_HALT_CONDITIONS,
++ },
++
+ /* Nokia S60 phones expose two ACM channels. The first is
+ * a modem and is picked up by the standard AT-command
+ * information below. The second is 'vendor-specific' but
+diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
+index ffeb3c83941f..b3b6c9db6fe5 100644
+--- a/drivers/usb/class/cdc-acm.h
++++ b/drivers/usb/class/cdc-acm.h
+@@ -133,3 +133,4 @@ struct acm {
+ #define NO_DATA_INTERFACE BIT(4)
+ #define IGNORE_DEVICE BIT(5)
+ #define QUIRK_CONTROL_LINE_STATE BIT(6)
++#define CLEAR_HALT_CONDITIONS BIT(7)
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index eddf1ed4155e..0ceb386777ae 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -4331,20 +4331,20 @@ static void ring_buffer_attach(struct perf_event *event,
+ WARN_ON_ONCE(event->rcu_pending);
+
+ old_rb = event->rb;
+- event->rcu_batches = get_state_synchronize_rcu();
+- event->rcu_pending = 1;
+-
+ spin_lock_irqsave(&old_rb->event_lock, flags);
+ list_del_rcu(&event->rb_entry);
+ spin_unlock_irqrestore(&old_rb->event_lock, flags);
+- }
+
+- if (event->rcu_pending && rb) {
+- cond_synchronize_rcu(event->rcu_batches);
+- event->rcu_pending = 0;
++ event->rcu_batches = get_state_synchronize_rcu();
++ event->rcu_pending = 1;
+ }
+
+ if (rb) {
++ if (event->rcu_pending) {
++ cond_synchronize_rcu(event->rcu_batches);
++ event->rcu_pending = 0;
++ }
++
+ spin_lock_irqsave(&rb->event_lock, flags);
+ list_add_rcu(&event->rb_entry, &rb->event_list);
+ spin_unlock_irqrestore(&rb->event_lock, flags);
+diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
+index 10df57237a66..98cfc388ea33 100644
+--- a/tools/build/Makefile.build
++++ b/tools/build/Makefile.build
+@@ -94,12 +94,12 @@ obj-y := $(patsubst %/, %/$(obj)-in.o, $(obj-y))
+ subdir-obj-y := $(filter %/$(obj)-in.o, $(obj-y))
+
+ # '$(OUTPUT)/dir' prefix to all objects
+-prefix := $(subst ./,,$(OUTPUT)$(dir)/)
+-obj-y := $(addprefix $(prefix),$(obj-y))
+-subdir-obj-y := $(addprefix $(prefix),$(subdir-obj-y))
++objprefix := $(subst ./,,$(OUTPUT)$(dir)/)
++obj-y := $(addprefix $(objprefix),$(obj-y))
++subdir-obj-y := $(addprefix $(objprefix),$(subdir-obj-y))
+
+ # Final '$(obj)-in.o' object
+-in-target := $(prefix)$(obj)-in.o
++in-target := $(objprefix)$(obj)-in.o
+
+ PHONY += $(subdir-y)
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-06-27 19:50 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-06-27 19:50 UTC (permalink / raw
To: gentoo-commits
commit: 45ecdfc0d977755e3f15ba10a6b4fdb93581357b
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sat Jun 27 19:50:31 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sat Jun 27 19:50:31 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=45ecdfc0
Update kdbus patch, rename for clarity
0000_README | 2 +-
...kdbus-4.1-rc1.patch => 5015_kdbus-6-27-15.patch | 1765 ++++++--------------
2 files changed, 504 insertions(+), 1263 deletions(-)
diff --git a/0000_README b/0000_README
index d33ec2f..dd82b40 100644
--- a/0000_README
+++ b/0000_README
@@ -83,6 +83,6 @@ Patch: 5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
From: https://github.com/graysky2/kernel_gcc_patch/
Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs.
-Patch: 5015_kdbus-4.1-rc1.patch
+Patch: 5015_kdbus-6-27-15.patch
From: https://lkml.org
Desc: Kernel-level IPC implementation
diff --git a/5015_kdbus-4.1-rc1.patch b/5015_kdbus-6-27-15.patch
similarity index 96%
rename from 5015_kdbus-4.1-rc1.patch
rename to 5015_kdbus-6-27-15.patch
index a5169bd..bc17abe 100644
--- a/5015_kdbus-4.1-rc1.patch
+++ b/5015_kdbus-6-27-15.patch
@@ -1,15 +1,15 @@
diff --git a/Documentation/Makefile b/Documentation/Makefile
-index 6883a1b..5e3fde6 100644
+index bc05482..e2127a7 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,4 +1,4 @@
- subdir-y := accounting arm auxdisplay blackfin connector \
+ subdir-y := accounting auxdisplay blackfin connector \
- filesystems filesystems ia64 laptops mic misc-devices \
+ filesystems filesystems ia64 kdbus laptops mic misc-devices \
networking pcmcia prctl ptp spi timers vDSO video4linux \
watchdog
diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt
-index 8136e1f..54e091e 100644
+index 51f4221..ec7c81b 100644
--- a/Documentation/ioctl/ioctl-number.txt
+++ b/Documentation/ioctl/ioctl-number.txt
@@ -292,6 +292,7 @@ Code Seq#(hex) Include File Comments
@@ -2262,7 +2262,7 @@ index 0000000..8c2a90e
+</refentry>
diff --git a/Documentation/kdbus/kdbus.item.xml b/Documentation/kdbus/kdbus.item.xml
new file mode 100644
-index 0000000..09f8b90
+index 0000000..ee09dfa
--- /dev/null
+++ b/Documentation/kdbus/kdbus.item.xml
@@ -0,0 +1,839 @@
@@ -2337,13 +2337,13 @@ index 0000000..09f8b90
+#define KDBUS_ALIGN8(val) (((val) + 7) & ~7)
+
+#define KDBUS_ITEM_NEXT(item) \
-+ (typeof(item))(((uint8_t *)item) + KDBUS_ALIGN8((item)->size))
++ (typeof(item))((uint8_t *)(item) + KDBUS_ALIGN8((item)->size))
+
+#define KDBUS_ITEM_FOREACH(item, head, first) \
-+ for (item = (head)->first; \
++ for ((item) = (head)->first; \
+ ((uint8_t *)(item) < (uint8_t *)(head) + (head)->size) && \
+ ((uint8_t *)(item) >= (uint8_t *)(head)); \
-+ item = KDBUS_ITEM_NEXT(item))
++ (item) = KDBUS_ITEM_NEXT(item))
+ ]]></programlisting>
+ </refsect2>
+ </refsect1>
@@ -7450,10 +7450,10 @@ index 0000000..52565ea
+ </template>
+</stylesheet>
diff --git a/MAINTAINERS b/MAINTAINERS
-index 6239a30..e924246 100644
+index d8afd29..02f7668 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
-@@ -5503,6 +5503,19 @@ S: Maintained
+@@ -5585,6 +5585,19 @@ S: Maintained
F: Documentation/kbuild/kconfig-language.txt
F: scripts/kconfig/
@@ -7474,10 +7474,10 @@ index 6239a30..e924246 100644
M: Vivek Goyal <vgoyal@redhat.com>
M: Haren Myneni <hbabu@us.ibm.com>
diff --git a/Makefile b/Makefile
-index 1100ff3..08c9818 100644
+index f5c8983..a1c8d57 100644
--- a/Makefile
+++ b/Makefile
-@@ -1350,6 +1350,7 @@ $(help-board-dirs): help-%:
+@@ -1343,6 +1343,7 @@ $(help-board-dirs): help-%:
%docs: scripts_basic FORCE
$(Q)$(MAKE) $(build)=scripts build_docproc
$(Q)$(MAKE) $(build)=Documentation/DocBook $@
@@ -7486,10 +7486,10 @@ index 1100ff3..08c9818 100644
else # KBUILD_EXTMOD
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
-index 68ceb97..ddc413e 100644
+index 1a0006a..4842a98 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
-@@ -214,6 +214,7 @@ header-y += ixjuser.h
+@@ -215,6 +215,7 @@ header-y += ixjuser.h
header-y += jffs2.h
header-y += joystick.h
header-y += kcmp.h
@@ -8483,10 +8483,10 @@ index 0000000..00a6e14
+
+#endif /* _UAPI_KDBUS_H_ */
diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h
-index 7d664ea..1cf05c0 100644
+index 7b1425a..ce2ac5a 100644
--- a/include/uapi/linux/magic.h
+++ b/include/uapi/linux/magic.h
-@@ -74,4 +74,6 @@
+@@ -76,4 +76,6 @@
#define BTRFS_TEST_MAGIC 0x73727279
#define NSFS_MAGIC 0x6e736673
@@ -8494,7 +8494,7 @@ index 7d664ea..1cf05c0 100644
+
#endif /* __LINUX_MAGIC_H__ */
diff --git a/init/Kconfig b/init/Kconfig
-index f5dbc6d..6bda631 100644
+index dc24dec..9388071 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -261,6 +261,19 @@ config POSIX_MQUEUE_SYSCTL
@@ -8557,10 +8557,10 @@ index 0000000..7ee9271
+obj-$(CONFIG_KDBUS) += kdbus.o
diff --git a/ipc/kdbus/bus.c b/ipc/kdbus/bus.c
new file mode 100644
-index 0000000..9d0679e
+index 0000000..bbdf0f2
--- /dev/null
+++ b/ipc/kdbus/bus.c
-@@ -0,0 +1,560 @@
+@@ -0,0 +1,542 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -8848,8 +8848,6 @@ index 0000000..9d0679e
+ continue;
+
+ if (conn_src) {
-+ u64 attach_flags;
-+
+ /*
+ * Anyone can send broadcasts, as they have no
+ * destination. But a receiver needs TALK access to
@@ -8858,19 +8856,12 @@ index 0000000..9d0679e
+ if (!kdbus_conn_policy_talk(conn_dst, NULL, conn_src))
+ continue;
+
-+ attach_flags = kdbus_meta_calc_attach_flags(conn_src,
-+ conn_dst);
-+
-+ /*
-+ * Keep sending messages even if we cannot acquire the
-+ * requested metadata. It's up to the receiver to drop
-+ * messages that lack expected metadata.
-+ */
-+ if (!conn_src->faked_meta)
-+ kdbus_meta_proc_collect(kmsg->proc_meta,
-+ attach_flags);
-+ kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, conn_src,
-+ attach_flags);
++ ret = kdbus_kmsg_collect_metadata(kmsg, conn_src,
++ conn_dst);
++ if (ret < 0) {
++ kdbus_conn_lost_message(conn_dst);
++ continue;
++ }
+ } else {
+ /*
+ * Check if there is a policy db that prevents the
@@ -8916,22 +8907,13 @@ index 0000000..9d0679e
+
+ down_read(&bus->conn_rwlock);
+ list_for_each_entry(conn_dst, &bus->monitors_list, monitor_entry) {
-+ /*
-+ * Collect metadata requested by the destination connection.
-+ * Ignore errors, as receivers need to check metadata
-+ * availability, anyway. So it's still better to send messages
-+ * that lack data, than to skip it entirely.
-+ */
+ if (conn_src) {
-+ u64 attach_flags;
-+
-+ attach_flags = kdbus_meta_calc_attach_flags(conn_src,
-+ conn_dst);
-+ if (!conn_src->faked_meta)
-+ kdbus_meta_proc_collect(kmsg->proc_meta,
-+ attach_flags);
-+ kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, conn_src,
-+ attach_flags);
++ ret = kdbus_kmsg_collect_metadata(kmsg, conn_src,
++ conn_dst);
++ if (ret < 0) {
++ kdbus_conn_lost_message(conn_dst);
++ continue;
++ }
+ }
+
+ ret = kdbus_conn_entry_insert(conn_src, conn_dst, kmsg, NULL);
@@ -8946,7 +8928,7 @@ index 0000000..9d0679e
+ * @domain: domain to operate on
+ * @argp: command payload
+ *
-+ * Return: Newly created bus on success, ERR_PTR on failure.
++ * Return: NULL or newly created bus on success, ERR_PTR on failure.
+ */
+struct kdbus_bus *kdbus_cmd_bus_make(struct kdbus_domain *domain,
+ void __user *argp)
@@ -9040,7 +9022,7 @@ index 0000000..9d0679e
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_bus_creator_info(struct kdbus_conn *conn, void __user *argp)
+{
@@ -9230,10 +9212,10 @@ index 0000000..5bea5ef
+#endif
diff --git a/ipc/kdbus/connection.c b/ipc/kdbus/connection.c
new file mode 100644
-index 0000000..ab476fa
+index 0000000..9993753
--- /dev/null
+++ b/ipc/kdbus/connection.c
-@@ -0,0 +1,2214 @@
+@@ -0,0 +1,2178 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -9668,7 +9650,7 @@ index 0000000..ab476fa
+ * directly, and won't cause any notifications.
+ */
+ if (!kdbus_conn_is_monitor(conn)) {
-+ ret = kdbus_notify_id_change(conn->ep->bus, KDBUS_ITEM_ID_ADD,
++ ret = kdbus_notify_id_change(bus, KDBUS_ITEM_ID_ADD,
+ conn->id, conn->flags);
+ if (ret < 0)
+ goto exit_disconnect;
@@ -9795,17 +9777,16 @@ index 0000000..ab476fa
+ hash_for_each(bus->conn_hash, i, c, hentry) {
+ mutex_lock(&c->lock);
+ list_for_each_entry_safe(r, r_tmp, &c->reply_list, entry) {
-+ if (r->reply_src == conn) {
-+ if (r->sync) {
-+ kdbus_sync_reply_wakeup(r, -EPIPE);
-+ kdbus_reply_unlink(r);
-+ continue;
-+ }
++ if (r->reply_src != conn)
++ continue;
+
++ if (r->sync)
++ kdbus_sync_reply_wakeup(r, -EPIPE);
++ else
+ /* send a 'connection dead' notification */
+ kdbus_notify_reply_dead(bus, c->id, r->cookie);
-+ kdbus_reply_unlink(r);
-+ }
++
++ kdbus_reply_unlink(r);
+ }
+ mutex_unlock(&c->lock);
+ }
@@ -9989,7 +9970,7 @@ index 0000000..ab476fa
+ *
+ * kdbus is reliable. That means, we try hard to never lose messages. However,
+ * memory is limited, so we cannot rely on transmissions to never fail.
-+ * Therefore, we use quota-limits to let callers know if there unicast message
++ * Therefore, we use quota-limits to let callers know if their unicast message
+ * cannot be transmitted to a peer. This works fine for unicasts, but for
+ * broadcasts we cannot make the caller handle the transmission failure.
+ * Instead, we must let the destination know that it couldn't receive a
@@ -10011,8 +9992,6 @@ index 0000000..ab476fa
+ const struct kdbus_kmsg *kmsg,
+ struct kdbus_user *user)
+{
-+ struct kdbus_queue_entry *entry;
-+
+ /* The remote connection was disconnected */
+ if (!kdbus_conn_active(conn_dst))
+ return ERR_PTR(-ECONNRESET);
@@ -10029,11 +10008,7 @@ index 0000000..ab476fa
+ kmsg->res && kmsg->res->fds_count > 0)
+ return ERR_PTR(-ECOMM);
+
-+ entry = kdbus_queue_entry_new(conn_dst, kmsg, user);
-+ if (IS_ERR(entry))
-+ return entry;
-+
-+ return entry;
++ return kdbus_queue_entry_new(conn_dst, kmsg, user);
+}
+
+/*
@@ -10334,7 +10309,6 @@ index 0000000..ab476fa
+ struct kdbus_reply *reply, *wake = NULL;
+ struct kdbus_conn *dst = NULL;
+ struct kdbus_bus *bus = src->ep->bus;
-+ u64 attach;
+ int ret;
+
+ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
@@ -10367,15 +10341,7 @@ index 0000000..ab476fa
+
+ /* attach metadata */
+
-+ attach = kdbus_meta_calc_attach_flags(src, dst);
-+
-+ if (!src->faked_meta) {
-+ ret = kdbus_meta_proc_collect(kmsg->proc_meta, attach);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ ret = kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, src, attach);
++ ret = kdbus_kmsg_collect_metadata(kmsg, src, dst);
+ if (ret < 0)
+ goto exit;
+
@@ -10403,7 +10369,6 @@ index 0000000..ab476fa
+ struct kdbus_reply *wait = NULL;
+ struct kdbus_conn *dst = NULL;
+ struct kdbus_bus *bus = src->ep->bus;
-+ u64 attach;
+ int ret;
+
+ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
@@ -10454,15 +10419,7 @@ index 0000000..ab476fa
+
+ /* attach metadata */
+
-+ attach = kdbus_meta_calc_attach_flags(src, dst);
-+
-+ if (!src->faked_meta) {
-+ ret = kdbus_meta_proc_collect(kmsg->proc_meta, attach);
-+ if (ret < 0)
-+ goto exit;
-+ }
-+
-+ ret = kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, src, attach);
++ ret = kdbus_kmsg_collect_metadata(kmsg, src, dst);
+ if (ret < 0)
+ goto exit;
+
@@ -10493,7 +10450,6 @@ index 0000000..ab476fa
+ struct kdbus_conn *dst = NULL;
+ struct kdbus_bus *bus = src->ep->bus;
+ bool is_signal = (kmsg->msg.flags & KDBUS_MSG_SIGNAL);
-+ u64 attach;
+ int ret = 0;
+
+ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
@@ -10532,16 +10488,8 @@ index 0000000..ab476fa
+
+ /* attach metadata */
+
-+ attach = kdbus_meta_calc_attach_flags(src, dst);
-+
-+ if (!src->faked_meta) {
-+ ret = kdbus_meta_proc_collect(kmsg->proc_meta, attach);
-+ if (ret < 0 && !is_signal)
-+ goto exit;
-+ }
-+
-+ ret = kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, src, attach);
-+ if (ret < 0 && !is_signal)
++ ret = kdbus_kmsg_collect_metadata(kmsg, src, dst);
++ if (ret < 0)
+ goto exit;
+
+ /* send message */
@@ -10824,10 +10772,8 @@ index 0000000..ab476fa
+ * to a peer if, and only if, that peer can see the name this
+ * notification is for.
+ *
-+ * KDBUS_ITEM_ID_{ADD,REMOVE}: As new peers cannot have names, and all
-+ * names are dropped before a peer is removed, those notifications
-+ * cannot be seen on custom endpoints. Thus, we only pass them
-+ * through on default endpoints.
++ * KDBUS_ITEM_ID_{ADD,REMOVE}: Notifications for ID changes are
++ * broadcast to everyone, to allow tracking peers.
+ */
+
+ switch (kmsg->notify_type) {
@@ -10839,7 +10785,7 @@ index 0000000..ab476fa
+
+ case KDBUS_ITEM_ID_ADD:
+ case KDBUS_ITEM_ID_REMOVE:
-+ return !conn->ep->user;
++ return true;
+
+ default:
+ WARN(1, "Invalid type for notification broadcast: %llu\n",
@@ -10854,7 +10800,7 @@ index 0000000..ab476fa
+ * @privileged: Whether the caller is privileged
+ * @argp: Command payload
+ *
-+ * Return: Newly created connection on success, ERR_PTR on failure.
++ * Return: NULL or newly created connection on success, ERR_PTR on failure.
+ */
+struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, bool privileged,
+ void __user *argp)
@@ -10941,7 +10887,7 @@ index 0000000..ab476fa
+ *
+ * The caller must not hold any active reference to @conn or this will deadlock.
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_byebye_unlocked(struct kdbus_conn *conn, void __user *argp)
+{
@@ -10973,7 +10919,7 @@ index 0000000..ab476fa
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp)
+{
@@ -11103,7 +11049,7 @@ index 0000000..ab476fa
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_update(struct kdbus_conn *conn, void __user *argp)
+{
@@ -11200,7 +11146,7 @@ index 0000000..ab476fa
+ * @f: file this command was called on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_send(struct kdbus_conn *conn, struct file *f, void __user *argp)
+{
@@ -11296,7 +11242,7 @@ index 0000000..ab476fa
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_recv(struct kdbus_conn *conn, void __user *argp)
+{
@@ -11419,7 +11365,7 @@ index 0000000..ab476fa
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_free(struct kdbus_conn *conn, void __user *argp)
+{
@@ -12098,7 +12044,7 @@ index 0000000..447a2bd
+#endif
diff --git a/ipc/kdbus/endpoint.c b/ipc/kdbus/endpoint.c
new file mode 100644
-index 0000000..174d274
+index 0000000..9a95a5e
--- /dev/null
+++ b/ipc/kdbus/endpoint.c
@@ -0,0 +1,275 @@
@@ -12292,7 +12238,7 @@ index 0000000..174d274
+ * @bus: bus to operate on
+ * @argp: command payload
+ *
-+ * Return: Newly created endpoint on success, ERR_PTR on failure.
++ * Return: NULL or newly created endpoint on success, ERR_PTR on failure.
+ */
+struct kdbus_ep *kdbus_cmd_ep_make(struct kdbus_bus *bus, void __user *argp)
+{
@@ -12351,7 +12297,7 @@ index 0000000..174d274
+ * @ep: endpoint to operate on
+ * @argp: command payload
+ *
-+ * Return: Newly created endpoint on success, ERR_PTR on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_ep_update(struct kdbus_ep *ep, void __user *argp)
+{
@@ -13002,10 +12948,10 @@ index 0000000..62f7d6a
+#endif
diff --git a/ipc/kdbus/handle.c b/ipc/kdbus/handle.c
new file mode 100644
-index 0000000..f72dbe5
+index 0000000..0752799
--- /dev/null
+++ b/ipc/kdbus/handle.c
-@@ -0,0 +1,617 @@
+@@ -0,0 +1,702 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -13026,6 +12972,7 @@ index 0000000..f72dbe5
+#include <linux/init.h>
+#include <linux/kdev_t.h>
+#include <linux/module.h>
++#include <linux/mutex.h>
+#include <linux/poll.h>
+#include <linux/rwsem.h>
+#include <linux/sched.h>
@@ -13079,10 +13026,6 @@ index 0000000..f72dbe5
+ if (!KDBUS_ITEMS_END(item, args->items, args->items_size))
+ return -EINVAL;
+
-+ for (i = 0; i < args->argc; ++i)
-+ if (args->argv[i].mandatory && !args->argv[i].item)
-+ return -EINVAL;
-+
+ return 0;
+}
+
@@ -13157,11 +13100,32 @@ index 0000000..f72dbe5
+int __kdbus_args_parse(struct kdbus_args *args, void __user *argp,
+ size_t type_size, size_t items_offset, void **out)
+{
-+ int ret;
++ u64 user_size;
++ int ret, i;
++
++ ret = kdbus_copy_from_user(&user_size, argp, sizeof(user_size));
++ if (ret < 0)
++ return ret;
++
++ if (user_size < type_size)
++ return -EINVAL;
++ if (user_size > KDBUS_CMD_MAX_SIZE)
++ return -EMSGSIZE;
++
++ if (user_size <= sizeof(args->cmd_buf)) {
++ if (copy_from_user(args->cmd_buf, argp, user_size))
++ return -EFAULT;
++ args->cmd = (void*)args->cmd_buf;
++ } else {
++ args->cmd = memdup_user(argp, user_size);
++ if (IS_ERR(args->cmd))
++ return PTR_ERR(args->cmd);
++ }
+
-+ args->cmd = kdbus_memdup_user(argp, type_size, KDBUS_CMD_MAX_SIZE);
-+ if (IS_ERR(args->cmd))
-+ return PTR_ERR(args->cmd);
++ if (args->cmd->size != user_size) {
++ ret = -EINVAL;
++ goto error;
++ }
+
+ args->cmd->return_flags = 0;
+ args->user = argp;
@@ -13181,6 +13145,15 @@ index 0000000..f72dbe5
+ if (ret < 0)
+ goto error;
+
++ /* mandatory items must be given (but not on negotiation) */
++ if (!(args->cmd->flags & KDBUS_FLAG_NEGOTIATE)) {
++ for (i = 0; i < args->argc; ++i)
++ if (args->argv[i].mandatory && !args->argv[i].item) {
++ ret = -EINVAL;
++ goto error;
++ }
++ }
++
+ *out = args->cmd;
+ return !!(args->cmd->flags & KDBUS_FLAG_NEGOTIATE);
+
@@ -13209,7 +13182,8 @@ index 0000000..f72dbe5
+ if (put_user(args->cmd->return_flags,
+ &args->user->return_flags))
+ ret = -EFAULT;
-+ kfree(args->cmd);
++ if (args->cmd != (void*)args->cmd_buf)
++ kfree(args->cmd);
+ args->cmd = NULL;
+ }
+
@@ -13232,7 +13206,7 @@ index 0000000..f72dbe5
+
+/**
+ * struct kdbus_handle - handle to the kdbus system
-+ * @rwlock: handle lock
++ * @lock: handle lock
+ * @type: type of this handle (KDBUS_HANDLE_*)
+ * @bus_owner: bus this handle owns
+ * @ep_owner: endpoint this handle owns
@@ -13240,7 +13214,7 @@ index 0000000..f72dbe5
+ * @privileged: Flag to mark a handle as privileged
+ */
+struct kdbus_handle {
-+ struct rw_semaphore rwlock;
++ struct mutex lock;
+
+ enum kdbus_handle_type type;
+ union {
@@ -13268,7 +13242,7 @@ index 0000000..f72dbe5
+ goto exit;
+ }
+
-+ init_rwsem(&handle->rwlock);
++ mutex_init(&handle->lock);
+ handle->type = KDBUS_HANDLE_NONE;
+
+ if (node->type == KDBUS_NODE_ENDPOINT) {
@@ -13358,8 +13332,8 @@ index 0000000..f72dbe5
+ break;
+ }
+
-+ handle->type = KDBUS_HANDLE_BUS_OWNER;
+ handle->bus_owner = bus;
++ ret = KDBUS_HANDLE_BUS_OWNER;
+ break;
+ }
+
@@ -13399,8 +13373,8 @@ index 0000000..f72dbe5
+ break;
+ }
+
-+ handle->type = KDBUS_HANDLE_EP_OWNER;
+ handle->ep_owner = ep;
++ ret = KDBUS_HANDLE_EP_OWNER;
+ break;
+
+ case KDBUS_CMD_HELLO:
@@ -13410,8 +13384,8 @@ index 0000000..f72dbe5
+ break;
+ }
+
-+ handle->type = KDBUS_HANDLE_CONNECTED;
+ handle->conn = conn;
++ ret = KDBUS_HANDLE_CONNECTED;
+ break;
+
+ default:
@@ -13525,19 +13499,41 @@ index 0000000..f72dbe5
+ case KDBUS_CMD_BUS_MAKE:
+ case KDBUS_CMD_ENDPOINT_MAKE:
+ case KDBUS_CMD_HELLO:
-+ /* bail out early if already typed */
-+ if (handle->type != KDBUS_HANDLE_NONE)
-+ break;
-+
-+ down_write(&handle->rwlock);
++ mutex_lock(&handle->lock);
+ if (handle->type == KDBUS_HANDLE_NONE) {
+ if (node->type == KDBUS_NODE_CONTROL)
+ ret = kdbus_handle_ioctl_control(file, cmd,
+ argp);
+ else if (node->type == KDBUS_NODE_ENDPOINT)
+ ret = kdbus_handle_ioctl_ep(file, cmd, argp);
++
++ if (ret > 0) {
++ /*
++ * The data given via open() is not sufficient
++ * to setup a kdbus handle. Hence, we require
++ * the user to perform a setup ioctl. This setup
++ * can only be performed once and defines the
++ * type of the handle. The different setup
++ * ioctls are locked against each other so they
++ * cannot race. Once the handle type is set,
++ * the type-dependent ioctls are enabled. To
++ * improve performance, we don't lock those via
++ * handle->lock. Instead, we issue a
++ * write-barrier before performing the
++ * type-change, which pairs with smp_rmb() in
++ * all handlers that access the type field. This
++ * guarantees the handle is fully setup, if
++ * handle->type is set. If handle->type is
++ * unset, you must not make any assumptions
++ * without taking handle->lock.
++ * Note that handle->type is only set once. It
++ * will never change afterwards.
++ */
++ smp_wmb();
++ handle->type = ret;
++ }
+ }
-+ up_write(&handle->rwlock);
++ mutex_unlock(&handle->lock);
+ break;
+
+ case KDBUS_CMD_ENDPOINT_UPDATE:
@@ -13552,14 +13548,30 @@ index 0000000..f72dbe5
+ case KDBUS_CMD_MATCH_REMOVE:
+ case KDBUS_CMD_SEND:
+ case KDBUS_CMD_RECV:
-+ case KDBUS_CMD_FREE:
-+ down_read(&handle->rwlock);
-+ if (handle->type == KDBUS_HANDLE_EP_OWNER)
++ case KDBUS_CMD_FREE: {
++ enum kdbus_handle_type type;
++
++ /*
++ * This read-barrier pairs with smp_wmb() of the handle setup.
++ * it guarantees the handle is fully written, in case the
++ * type has been set. It allows us to access the handle without
++ * taking handle->lock, given the guarantee that the type is
++ * only ever set once, and stays constant afterwards.
++ * Furthermore, the handle object itself is not modified in any
++ * way after the type is set. That is, the type-field is the
++ * last field that is written on any handle. If it has not been
++ * set, we must not access the handle here.
++ */
++ type = handle->type;
++ smp_rmb();
++
++ if (type == KDBUS_HANDLE_EP_OWNER)
+ ret = kdbus_handle_ioctl_ep_owner(file, cmd, argp);
-+ else if (handle->type == KDBUS_HANDLE_CONNECTED)
++ else if (type == KDBUS_HANDLE_CONNECTED)
+ ret = kdbus_handle_ioctl_connected(file, cmd, argp);
-+ up_read(&handle->rwlock);
++
+ break;
++ }
+ default:
+ ret = -ENOTTY;
+ break;
@@ -13572,42 +13584,61 @@ index 0000000..f72dbe5
+ struct poll_table_struct *wait)
+{
+ struct kdbus_handle *handle = file->private_data;
++ enum kdbus_handle_type type;
+ unsigned int mask = POLLOUT | POLLWRNORM;
-+ int ret;
+
-+ /* Only a connected endpoint can read/write data */
-+ down_read(&handle->rwlock);
-+ if (handle->type != KDBUS_HANDLE_CONNECTED) {
-+ up_read(&handle->rwlock);
-+ return POLLERR | POLLHUP;
-+ }
-+ up_read(&handle->rwlock);
++ /*
++ * This pairs with smp_wmb() during handle setup. It guarantees that
++ * _iff_ the handle type is set, handle->conn is valid. Furthermore,
++ * _iff_ the type is set, the handle object is constant and never
++ * changed again. If it's not set, we must not access the handle but
++ * bail out. We also must assume no setup has taken place, yet.
++ */
++ type = handle->type;
++ smp_rmb();
+
-+ ret = kdbus_conn_acquire(handle->conn);
-+ if (ret < 0)
++ /* Only a connected endpoint can read/write data */
++ if (type != KDBUS_HANDLE_CONNECTED)
+ return POLLERR | POLLHUP;
+
+ poll_wait(file, &handle->conn->wait, wait);
+
++ /*
++ * Verify the connection hasn't been deactivated _after_ adding the
++ * wait-queue. This guarantees, that if the connection is deactivated
++ * after we checked it, the waitqueue is signaled and we're called
++ * again.
++ */
++ if (!kdbus_conn_active(handle->conn))
++ return POLLERR | POLLHUP;
++
+ if (!list_empty(&handle->conn->queue.msg_list) ||
+ atomic_read(&handle->conn->lost_count) > 0)
+ mask |= POLLIN | POLLRDNORM;
+
-+ kdbus_conn_release(handle->conn);
-+
+ return mask;
+}
+
+static int kdbus_handle_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct kdbus_handle *handle = file->private_data;
++ enum kdbus_handle_type type;
+ int ret = -EBADFD;
+
-+ if (down_read_trylock(&handle->rwlock)) {
-+ if (handle->type == KDBUS_HANDLE_CONNECTED)
-+ ret = kdbus_pool_mmap(handle->conn->pool, vma);
-+ up_read(&handle->rwlock);
-+ }
++ /*
++ * This pairs with smp_wmb() during handle setup. It guarantees that
++ * _iff_ the handle type is set, handle->conn is valid. Furthermore,
++ * _iff_ the type is set, the handle object is constant and never
++ * changed again. If it's not set, we must not access the handle but
++ * bail out. We also must assume no setup has taken place, yet.
++ */
++ type = handle->type;
++ smp_rmb();
++
++ /* Only connected handles have a pool we can map */
++ if (type == KDBUS_HANDLE_CONNECTED)
++ ret = kdbus_pool_mmap(handle->conn->pool, vma);
++
+ return ret;
+}
+
@@ -13625,10 +13656,10 @@ index 0000000..f72dbe5
+};
diff --git a/ipc/kdbus/handle.h b/ipc/kdbus/handle.h
new file mode 100644
-index 0000000..93a372d
+index 0000000..13c59d9
--- /dev/null
+++ b/ipc/kdbus/handle.h
-@@ -0,0 +1,85 @@
+@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -13676,6 +13707,7 @@ index 0000000..93a372d
+ * @argv: array of items this command supports
+ * @user: set by parser to user-space location of current command
+ * @cmd: set by parser to kernel copy of command payload
++ * @cmd_buf: 512 bytes inline buf to avoid kmalloc() on small cmds
+ * @items: points to item array in @cmd
+ * @items_size: size of @items in bytes
+ *
@@ -13683,6 +13715,9 @@ index 0000000..93a372d
+ * The ioctl handler has to pre-fill the flags and allowed items before passing
+ * the object to kdbus_args_parse(). The parser will copy the command payload
+ * into kernel-space and verify the correctness of the data.
++ *
++ * We use a 512 bytes buffer for small command payloads, to be allocated on
++ * stack on syscall entrance.
+ */
+struct kdbus_args {
+ u64 allowed_flags;
@@ -13691,6 +13726,7 @@ index 0000000..93a372d
+
+ struct kdbus_cmd __user *user;
+ struct kdbus_cmd *cmd;
++ u8 cmd_buf[512];
+
+ struct kdbus_item *items;
+ size_t items_size;
@@ -13716,10 +13752,10 @@ index 0000000..93a372d
+#endif
diff --git a/ipc/kdbus/item.c b/ipc/kdbus/item.c
new file mode 100644
-index 0000000..745ad54
+index 0000000..1ee72c2
--- /dev/null
+++ b/ipc/kdbus/item.c
-@@ -0,0 +1,339 @@
+@@ -0,0 +1,333 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -13818,12 +13854,6 @@ index 0000000..745ad54
+ break;
+
+ case KDBUS_ITEM_PAYLOAD_VEC:
-+ if (payload_size != sizeof(struct kdbus_vec))
-+ return -EINVAL;
-+ if (item->vec.size == 0 || item->vec.size > SIZE_MAX)
-+ return -EINVAL;
-+ break;
-+
+ case KDBUS_ITEM_PAYLOAD_OFF:
+ if (payload_size != sizeof(struct kdbus_vec))
+ return -EINVAL;
@@ -14061,7 +14091,7 @@ index 0000000..745ad54
+}
diff --git a/ipc/kdbus/item.h b/ipc/kdbus/item.h
new file mode 100644
-index 0000000..eeefd8b
+index 0000000..bca63b4
--- /dev/null
+++ b/ipc/kdbus/item.h
@@ -0,0 +1,64 @@
@@ -14088,17 +14118,17 @@ index 0000000..eeefd8b
+#include "util.h"
+
+/* generic access and iterators over a stream of items */
-+#define KDBUS_ITEM_NEXT(_i) (typeof(_i))(((u8 *)_i) + KDBUS_ALIGN8((_i)->size))
-+#define KDBUS_ITEMS_SIZE(_h, _is) ((_h)->size - offsetof(typeof(*_h), _is))
++#define KDBUS_ITEM_NEXT(_i) (typeof(_i))((u8 *)(_i) + KDBUS_ALIGN8((_i)->size))
++#define KDBUS_ITEMS_SIZE(_h, _is) ((_h)->size - offsetof(typeof(*(_h)), _is))
+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
+#define KDBUS_ITEM_SIZE(_s) KDBUS_ALIGN8(KDBUS_ITEM_HEADER_SIZE + (_s))
+#define KDBUS_ITEM_PAYLOAD_SIZE(_i) ((_i)->size - KDBUS_ITEM_HEADER_SIZE)
+
+#define KDBUS_ITEMS_FOREACH(_i, _is, _s) \
-+ for (_i = _is; \
++ for ((_i) = (_is); \
+ ((u8 *)(_i) < (u8 *)(_is) + (_s)) && \
+ ((u8 *)(_i) >= (u8 *)(_is)); \
-+ _i = KDBUS_ITEM_NEXT(_i))
++ (_i) = KDBUS_ITEM_NEXT(_i))
+
+#define KDBUS_ITEM_VALID(_i, _is, _s) \
+ ((_i)->size >= KDBUS_ITEM_HEADER_SIZE && \
@@ -14107,7 +14137,7 @@ index 0000000..eeefd8b
+ (u8 *)(_i) >= (u8 *)(_is))
+
+#define KDBUS_ITEMS_END(_i, _is, _s) \
-+ ((u8 *)_i == ((u8 *)(_is) + KDBUS_ALIGN8(_s)))
++ ((u8 *)(_i) == ((u8 *)(_is) + KDBUS_ALIGN8(_s)))
+
+/**
+ * struct kdbus_item_header - Describes the fix part of an item
@@ -14201,10 +14231,10 @@ index 0000000..6450f58
+#endif
diff --git a/ipc/kdbus/main.c b/ipc/kdbus/main.c
new file mode 100644
-index 0000000..785f529
+index 0000000..1ad4dc8
--- /dev/null
+++ b/ipc/kdbus/main.c
-@@ -0,0 +1,125 @@
+@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -14222,7 +14252,6 @@ index 0000000..785f529
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/module.h>
-+#include <linux/moduleparam.h>
+
+#include "util.h"
+#include "fs.h"
@@ -14286,17 +14315,6 @@ index 0000000..785f529
+/* kdbus mount-point /sys/fs/kdbus */
+static struct kobject *kdbus_dir;
+
-+/* global module option to apply a mask to exported metadata */
-+unsigned long long kdbus_meta_attach_mask = KDBUS_ATTACH_TIMESTAMP |
-+ KDBUS_ATTACH_CREDS |
-+ KDBUS_ATTACH_PIDS |
-+ KDBUS_ATTACH_AUXGROUPS |
-+ KDBUS_ATTACH_NAMES |
-+ KDBUS_ATTACH_SECLABEL |
-+ KDBUS_ATTACH_CONN_DESCRIPTION;
-+MODULE_PARM_DESC(attach_flags_mask, "Attach-flags mask for exported metadata");
-+module_param_named(attach_flags_mask, kdbus_meta_attach_mask, ullong, 0644);
-+
+static int __init kdbus_init(void)
+{
+ int ret;
@@ -14323,6 +14341,7 @@ index 0000000..785f529
+{
+ kdbus_fs_exit();
+ kobject_put(kdbus_dir);
++ ida_destroy(&kdbus_node_ida);
+}
+
+module_init(kdbus_init);
@@ -14332,7 +14351,7 @@ index 0000000..785f529
+MODULE_ALIAS_FS(KBUILD_MODNAME "fs");
diff --git a/ipc/kdbus/match.c b/ipc/kdbus/match.c
new file mode 100644
-index 0000000..30cec1c
+index 0000000..cc083b4
--- /dev/null
+++ b/ipc/kdbus/match.c
@@ -0,0 +1,559 @@
@@ -14706,7 +14725,7 @@ index 0000000..30cec1c
+ * are used to match messages from userspace, while the others apply to
+ * kernel-generated notifications.
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_match_add(struct kdbus_conn *conn, void __user *argp)
+{
@@ -14866,7 +14885,7 @@ index 0000000..30cec1c
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_match_remove(struct kdbus_conn *conn, void __user *argp)
+{
@@ -14938,10 +14957,10 @@ index 0000000..ea42929
+#endif
diff --git a/ipc/kdbus/message.c b/ipc/kdbus/message.c
new file mode 100644
-index 0000000..8096075
+index 0000000..066e816
--- /dev/null
+++ b/ipc/kdbus/message.c
-@@ -0,0 +1,616 @@
+@@ -0,0 +1,640 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -15558,12 +15577,36 @@ index 0000000..8096075
+ kdbus_kmsg_free(m);
+ return ERR_PTR(ret);
+}
++
++/**
++ * kdbus_kmsg_collect_metadata() - collect metadata
++ * @kmsg: message to collect metadata on
++ * @src: source connection of message
++ * @dst: destination connection of message
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_kmsg_collect_metadata(struct kdbus_kmsg *kmsg, struct kdbus_conn *src,
++ struct kdbus_conn *dst)
++{
++ u64 attach;
++ int ret;
++
++ attach = kdbus_meta_calc_attach_flags(src, dst);
++ if (!src->faked_meta) {
++ ret = kdbus_meta_proc_collect(kmsg->proc_meta, attach);
++ if (ret < 0)
++ return ret;
++ }
++
++ return kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, src, attach);
++}
diff --git a/ipc/kdbus/message.h b/ipc/kdbus/message.h
new file mode 100644
-index 0000000..af47758
+index 0000000..cdaa65c
--- /dev/null
+++ b/ipc/kdbus/message.h
-@@ -0,0 +1,133 @@
+@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -15695,14 +15738,16 @@ index 0000000..af47758
+struct kdbus_kmsg *kdbus_kmsg_new_from_cmd(struct kdbus_conn *conn,
+ struct kdbus_cmd_send *cmd_send);
+void kdbus_kmsg_free(struct kdbus_kmsg *kmsg);
++int kdbus_kmsg_collect_metadata(struct kdbus_kmsg *kmsg, struct kdbus_conn *src,
++ struct kdbus_conn *dst);
+
+#endif
diff --git a/ipc/kdbus/metadata.c b/ipc/kdbus/metadata.c
new file mode 100644
-index 0000000..3adc6c2
+index 0000000..c36b9cc
--- /dev/null
+++ b/ipc/kdbus/metadata.c
-@@ -0,0 +1,1159 @@
+@@ -0,0 +1,1184 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -15734,7 +15779,6 @@ index 0000000..3adc6c2
+#include <linux/uidgid.h>
+#include <linux/uio.h>
+#include <linux/user_namespace.h>
-+#include <linux/version.h>
+
+#include "bus.h"
+#include "connection.h"
@@ -15769,8 +15813,7 @@ index 0000000..3adc6c2
+ * @root_path: Root-FS path
+ * @cmdline: Command-line
+ * @cgroup: Full cgroup path
-+ * @caps: Capabilities
-+ * @caps_namespace: User-namespace of @caps
++ * @cred: Credentials
+ * @seclabel: Seclabel
+ * @audit_loginuid: Audit login-UID
+ * @audit_sessionid: Audit session-ID
@@ -15810,14 +15853,7 @@ index 0000000..3adc6c2
+ char *cgroup;
+
+ /* KDBUS_ITEM_CAPS */
-+ struct caps {
-+ /* binary compatible to kdbus_caps */
-+ u32 last_cap;
-+ struct {
-+ u32 caps[_KERNEL_CAPABILITY_U32S];
-+ } set[4];
-+ } caps;
-+ struct user_namespace *caps_namespace;
++ const struct cred *cred;
+
+ /* KDBUS_ITEM_SECLABEL */
+ char *seclabel;
@@ -15855,6 +15891,14 @@ index 0000000..3adc6c2
+ char *conn_description;
+};
+
++/* fixed size equivalent of "kdbus_caps" */
++struct kdbus_meta_caps {
++ u32 last_cap;
++ struct {
++ u32 caps[_KERNEL_CAPABILITY_U32S];
++ } set[4];
++};
++
+/**
+ * kdbus_meta_proc_new() - Create process metadata object
+ *
@@ -15881,7 +15925,8 @@ index 0000000..3adc6c2
+
+ path_put(&mp->exe_path);
+ path_put(&mp->root_path);
-+ put_user_ns(mp->caps_namespace);
++ if (mp->cred)
++ put_cred(mp->cred);
+ put_pid(mp->ppid);
+ put_pid(mp->tgid);
+ put_pid(mp->pid);
@@ -15951,25 +15996,23 @@ index 0000000..3adc6c2
+
+static int kdbus_meta_proc_collect_auxgroups(struct kdbus_meta_proc *mp)
+{
-+ struct group_info *info;
++ const struct group_info *info;
+ size_t i;
+
-+ info = get_current_groups();
++ /* no need to lock/ref, current creds cannot change */
++ info = current_cred()->group_info;
+
+ if (info->ngroups > 0) {
+ mp->auxgrps = kmalloc_array(info->ngroups, sizeof(kgid_t),
+ GFP_KERNEL);
-+ if (!mp->auxgrps) {
-+ put_group_info(info);
++ if (!mp->auxgrps)
+ return -ENOMEM;
-+ }
+
+ for (i = 0; i < info->ngroups; i++)
+ mp->auxgrps[i] = GROUP_AT(info, i);
+ }
+
+ mp->n_auxgrps = info->ngroups;
-+ put_group_info(info);
+ mp->valid |= KDBUS_ATTACH_AUXGROUPS;
+
+ return 0;
@@ -15989,42 +16032,29 @@ index 0000000..3adc6c2
+
+static void kdbus_meta_proc_collect_exe(struct kdbus_meta_proc *mp)
+{
-+ struct mm_struct *mm;
++ struct file *exe_file;
+
-+ mm = get_task_mm(current);
-+ if (!mm)
-+ return;
-+
-+ down_read(&mm->mmap_sem);
-+ if (mm->exe_file) {
-+ mp->exe_path = mm->exe_file->f_path;
++ rcu_read_lock();
++ exe_file = rcu_dereference(current->mm->exe_file);
++ if (exe_file) {
++ mp->exe_path = exe_file->f_path;
+ path_get(&mp->exe_path);
+ get_fs_root(current->fs, &mp->root_path);
+ mp->valid |= KDBUS_ATTACH_EXE;
+ }
-+ up_read(&mm->mmap_sem);
-+
-+ mmput(mm);
++ rcu_read_unlock();
+}
+
+static int kdbus_meta_proc_collect_cmdline(struct kdbus_meta_proc *mp)
+{
-+ struct mm_struct *mm;
++ struct mm_struct *mm = current->mm;
+ char *cmdline;
+
-+ mm = get_task_mm(current);
-+ if (!mm)
-+ return 0;
-+
-+ if (!mm->arg_end) {
-+ mmput(mm);
++ if (!mm->arg_end)
+ return 0;
-+ }
+
+ cmdline = strndup_user((const char __user *)mm->arg_start,
+ mm->arg_end - mm->arg_start);
-+ mmput(mm);
-+
+ if (IS_ERR(cmdline))
+ return PTR_ERR(cmdline);
+
@@ -16062,25 +16092,7 @@ index 0000000..3adc6c2
+
+static void kdbus_meta_proc_collect_caps(struct kdbus_meta_proc *mp)
+{
-+ const struct cred *c = current_cred();
-+ int i;
-+
-+ /* ABI: "last_cap" equals /proc/sys/kernel/cap_last_cap */
-+ mp->caps.last_cap = CAP_LAST_CAP;
-+ mp->caps_namespace = get_user_ns(current_user_ns());
-+
-+ CAP_FOR_EACH_U32(i) {
-+ mp->caps.set[0].caps[i] = c->cap_inheritable.cap[i];
-+ mp->caps.set[1].caps[i] = c->cap_permitted.cap[i];
-+ mp->caps.set[2].caps[i] = c->cap_effective.cap[i];
-+ mp->caps.set[3].caps[i] = c->cap_bset.cap[i];
-+ }
-+
-+ /* clear unused bits */
-+ for (i = 0; i < 4; i++)
-+ mp->caps.set[i].caps[CAP_TO_INDEX(CAP_LAST_CAP)] &=
-+ CAP_LAST_U32_VALID_MASK;
-+
++ mp->cred = get_current_cred();
+ mp->valid |= KDBUS_ATTACH_CAPS;
+}
+
@@ -16543,7 +16555,6 @@ index 0000000..3adc6c2
+ }
+
+ *mask &= valid;
-+ *mask &= kdbus_meta_attach_mask;
+
+ if (!*mask)
+ goto exit;
@@ -16589,7 +16600,7 @@ index 0000000..3adc6c2
+ size += KDBUS_ITEM_SIZE(strlen(mp->cgroup) + 1);
+
+ if (mp && (*mask & KDBUS_ATTACH_CAPS))
-+ size += KDBUS_ITEM_SIZE(sizeof(mp->caps));
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_meta_caps));
+
+ if (mp && (*mask & KDBUS_ATTACH_SECLABEL))
+ size += KDBUS_ITEM_SIZE(strlen(mp->seclabel) + 1);
@@ -16626,6 +16637,69 @@ index 0000000..3adc6c2
+ return 2 + !!kdbus_kvec_pad(kvec++, size);
+}
+
++static void kdbus_meta_export_caps(struct kdbus_meta_caps *out,
++ struct kdbus_meta_proc *mp)
++{
++ struct user_namespace *iter;
++ const struct cred *cred = mp->cred;
++ bool parent = false, owner = false;
++ int i;
++
++ /*
++ * This translates the effective capabilities of 'cred' into the current
++ * user-namespace. If the current user-namespace is a child-namespace of
++ * the user-namespace of 'cred', the mask can be copied verbatim. If
++ * not, the mask is cleared.
++ * There's one exception: If 'cred' is the owner of any user-namespace
++ * in the path between the current user-namespace and the user-namespace
++ * of 'cred', then it has all effective capabilities set. This means,
++ * the user who created a user-namespace always has all effective
++ * capabilities in any child namespaces. Note that this is based on the
++ * uid of the namespace creator, not the task hierarchy.
++ */
++ for (iter = current_user_ns(); iter; iter = iter->parent) {
++ if (iter == cred->user_ns) {
++ parent = true;
++ break;
++ }
++
++ if (iter == &init_user_ns)
++ break;
++
++ if ((iter->parent == cred->user_ns) &&
++ uid_eq(iter->owner, cred->euid)) {
++ owner = true;
++ break;
++ }
++ }
++
++ out->last_cap = CAP_LAST_CAP;
++
++ CAP_FOR_EACH_U32(i) {
++ if (parent) {
++ out->set[0].caps[i] = cred->cap_inheritable.cap[i];
++ out->set[1].caps[i] = cred->cap_permitted.cap[i];
++ out->set[2].caps[i] = cred->cap_effective.cap[i];
++ out->set[3].caps[i] = cred->cap_bset.cap[i];
++ } else if (owner) {
++ out->set[0].caps[i] = 0U;
++ out->set[1].caps[i] = ~0U;
++ out->set[2].caps[i] = ~0U;
++ out->set[3].caps[i] = ~0U;
++ } else {
++ out->set[0].caps[i] = 0U;
++ out->set[1].caps[i] = 0U;
++ out->set[2].caps[i] = 0U;
++ out->set[3].caps[i] = 0U;
++ }
++ }
++
++ /* clear unused bits */
++ for (i = 0; i < 4; i++)
++ out->set[i].caps[CAP_TO_INDEX(CAP_LAST_CAP)] &=
++ CAP_LAST_U32_VALID_MASK;
++}
++
+/* This is equivalent to from_kuid_munged(), but maps INVALID_UID to itself */
+static uid_t kdbus_from_kuid_keep(kuid_t uid)
+{
@@ -16684,14 +16758,6 @@ index 0000000..3adc6c2
+
+ hdr = &item_hdr[0];
+
-+ /*
-+ * TODO: We currently have no sane way of translating a set of caps
-+ * between different user namespaces. Until that changes, we have
-+ * to drop such items.
-+ */
-+ if (mp && mp->caps_namespace != user_ns)
-+ mask &= ~KDBUS_ATTACH_CAPS;
-+
+ if (mask == 0) {
+ *real_size = 0;
+ return 0;
@@ -16797,10 +16863,14 @@ index 0000000..3adc6c2
+ KDBUS_ITEM_CGROUP, mp->cgroup,
+ strlen(mp->cgroup) + 1, &size);
+
-+ if (mp && (mask & KDBUS_ATTACH_CAPS))
++ if (mp && (mask & KDBUS_ATTACH_CAPS)) {
++ struct kdbus_meta_caps caps = {};
++
++ kdbus_meta_export_caps(&caps, mp);
+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
-+ KDBUS_ITEM_CAPS, &mp->caps,
-+ sizeof(mp->caps), &size);
++ KDBUS_ITEM_CAPS, &caps,
++ sizeof(caps), &size);
++ }
+
+ if (mp && (mask & KDBUS_ATTACH_SECLABEL))
+ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
@@ -16864,10 +16934,10 @@ index 0000000..3adc6c2
+}
diff --git a/ipc/kdbus/metadata.h b/ipc/kdbus/metadata.h
new file mode 100644
-index 0000000..42c942b
+index 0000000..79b6ac3
--- /dev/null
+++ b/ipc/kdbus/metadata.h
-@@ -0,0 +1,57 @@
+@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -16894,8 +16964,6 @@ index 0000000..42c942b
+struct kdbus_meta_proc;
+struct kdbus_meta_conn;
+
-+extern unsigned long long kdbus_meta_attach_mask;
-+
+struct kdbus_meta_proc *kdbus_meta_proc_new(void);
+struct kdbus_meta_proc *kdbus_meta_proc_ref(struct kdbus_meta_proc *mp);
+struct kdbus_meta_proc *kdbus_meta_proc_unref(struct kdbus_meta_proc *mp);
@@ -16927,10 +16995,10 @@ index 0000000..42c942b
+#endif
diff --git a/ipc/kdbus/names.c b/ipc/kdbus/names.c
new file mode 100644
-index 0000000..657008e
+index 0000000..d77ee08
--- /dev/null
+++ b/ipc/kdbus/names.c
-@@ -0,0 +1,772 @@
+@@ -0,0 +1,770 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -17402,7 +17470,7 @@ index 0000000..657008e
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_name_acquire(struct kdbus_conn *conn, void __user *argp)
+{
@@ -17447,8 +17515,6 @@ index 0000000..657008e
+
+ ret = kdbus_name_acquire(conn->ep->bus->name_registry, conn, item_name,
+ cmd->flags, &cmd->return_flags);
-+ if (ret < 0)
-+ goto exit_dec;
+
+exit_dec:
+ atomic_dec(&conn->name_count);
@@ -17461,7 +17527,7 @@ index 0000000..657008e
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_name_release(struct kdbus_conn *conn, void __user *argp)
+{
@@ -17632,7 +17698,7 @@ index 0000000..657008e
+ * @conn: connection to operate on
+ * @argp: command payload
+ *
-+ * Return: 0 on success, negative error code on failure.
++ * Return: >=0 on success, negative error code on failure.
+ */
+int kdbus_cmd_list(struct kdbus_conn *conn, void __user *argp)
+{
@@ -17785,10 +17851,10 @@ index 0000000..3dd2589
+#endif
diff --git a/ipc/kdbus/node.c b/ipc/kdbus/node.c
new file mode 100644
-index 0000000..520df00
+index 0000000..0d65c65
--- /dev/null
+++ b/ipc/kdbus/node.c
-@@ -0,0 +1,910 @@
+@@ -0,0 +1,897 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -17969,7 +18035,7 @@ index 0000000..520df00
+ * accessed by other callers to properly initialize
+ * filesystem nodes.
+ *
-+ * * node->id: This is an unsigned 32bit integer allocated by an IDR. It is
++ * * node->id: This is an unsigned 32bit integer allocated by an IDA. It is
+ * always kept as small as possible during allocation and is
+ * globally unique across all nodes allocated by this module. 0
+ * is reserved as "not assigned" and is the default.
@@ -18024,8 +18090,7 @@ index 0000000..520df00
+#define KDBUS_NODE_NEW (KDBUS_NODE_BIAS - 4)
+
+/* global unique ID mapping for kdbus nodes */
-+static DEFINE_IDR(kdbus_node_idr);
-+static DECLARE_RWSEM(kdbus_node_idr_lock);
++DEFINE_IDA(kdbus_node_ida);
+
+/**
+ * kdbus_node_name_hash() - hash a name
@@ -18128,15 +18193,11 @@ index 0000000..520df00
+ node->hash = kdbus_node_name_hash(name);
+ }
+
-+ down_write(&kdbus_node_idr_lock);
-+ ret = idr_alloc(&kdbus_node_idr, node, 1, 0, GFP_KERNEL);
-+ if (ret >= 0)
-+ node->id = ret;
-+ up_write(&kdbus_node_idr_lock);
-+
++ ret = ida_simple_get(&kdbus_node_ida, 1, 0, GFP_KERNEL);
+ if (ret < 0)
+ return ret;
+
++ node->id = ret;
+ ret = 0;
+
+ if (parent) {
@@ -18231,16 +18292,8 @@ index 0000000..520df00
+
+ if (node->free_cb)
+ node->free_cb(node);
-+
-+ down_write(&kdbus_node_idr_lock);
+ if (safe.id > 0)
-+ idr_remove(&kdbus_node_idr, safe.id);
-+ /* drop caches after last node to not leak memory on unload */
-+ if (idr_is_empty(&kdbus_node_idr)) {
-+ idr_destroy(&kdbus_node_idr);
-+ idr_init(&kdbus_node_idr);
-+ }
-+ up_write(&kdbus_node_idr_lock);
++ ida_simple_remove(&kdbus_node_ida, safe.id);
+
+ kfree(safe.name);
+
@@ -18701,10 +18754,10 @@ index 0000000..520df00
+}
diff --git a/ipc/kdbus/node.h b/ipc/kdbus/node.h
new file mode 100644
-index 0000000..be125ce
+index 0000000..970e02b
--- /dev/null
+++ b/ipc/kdbus/node.h
-@@ -0,0 +1,84 @@
+@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -18765,6 +18818,8 @@ index 0000000..be125ce
+
+#define kdbus_node_from_rb(_node) rb_entry((_node), struct kdbus_node, rb)
+
++extern struct ida kdbus_node_ida;
++
+void kdbus_node_init(struct kdbus_node *node, unsigned int type);
+
+int kdbus_node_link(struct kdbus_node *node, struct kdbus_node *parent,
@@ -19633,7 +19688,7 @@ index 0000000..15dd7bc
+#endif
diff --git a/ipc/kdbus/pool.c b/ipc/kdbus/pool.c
new file mode 100644
-index 0000000..139bb77
+index 0000000..45dcdea
--- /dev/null
+++ b/ipc/kdbus/pool.c
@@ -0,0 +1,728 @@
@@ -20314,7 +20369,7 @@ index 0000000..139bb77
+ }
+
+ kaddr = (char __force __user *)kmap(page) + page_off;
-+ n_read = f_src->f_op->read(f_src, kaddr, copy_len, &off_src);
++ n_read = __vfs_read(f_src, kaddr, copy_len, &off_src);
+ kunmap(page);
+ mark_page_accessed(page);
+ flush_dcache_page(page);
@@ -20419,7 +20474,7 @@ index 0000000..a903821
+#endif
diff --git a/ipc/kdbus/queue.c b/ipc/kdbus/queue.c
new file mode 100644
-index 0000000..a449464
+index 0000000..25bb3ad
--- /dev/null
+++ b/ipc/kdbus/queue.c
@@ -0,0 +1,678 @@
@@ -21062,7 +21117,7 @@ index 0000000..a449464
+ lockdep_assert_held(&src->lock);
+ lockdep_assert_held(&dst->lock);
+
-+ if (WARN_ON(IS_ERR(e->user)) || WARN_ON(list_empty(&e->entry)))
++ if (WARN_ON(list_empty(&e->entry)))
+ return -EINVAL;
+ if (src == dst)
+ return 0;
@@ -21201,10 +21256,10 @@ index 0000000..7f2db96
+#endif /* __KDBUS_QUEUE_H */
diff --git a/ipc/kdbus/reply.c b/ipc/kdbus/reply.c
new file mode 100644
-index 0000000..008dca8
+index 0000000..e6791d8
--- /dev/null
+++ b/ipc/kdbus/reply.c
-@@ -0,0 +1,257 @@
+@@ -0,0 +1,252 @@
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
@@ -21244,7 +21299,7 @@ index 0000000..008dca8
+ bool sync)
+{
+ struct kdbus_reply *r;
-+ int ret = 0;
++ int ret;
+
+ if (atomic_inc_return(&reply_dst->request_count) >
+ KDBUS_CONN_MAX_REQUESTS_PENDING) {
@@ -21271,13 +21326,11 @@ index 0000000..008dca8
+ r->waiting = true;
+ }
+
-+exit_dec_request_count:
-+ if (ret < 0) {
-+ atomic_dec(&reply_dst->request_count);
-+ return ERR_PTR(ret);
-+ }
-+
+ return r;
++
++exit_dec_request_count:
++ atomic_dec(&reply_dst->request_count);
++ return ERR_PTR(ret);
+}
+
+static void __kdbus_reply_free(struct kref *kref)
@@ -21347,8 +21400,7 @@ index 0000000..008dca8
+ * @reply: The reply object
+ * @err: Error code to set on the remote side
+ *
-+ * Remove the synchronous reply object from its connection reply_list, and
-+ * wake up remote peer (method origin) with the appropriate synchronous reply
++ * Wake up remote peer (method origin) with the appropriate synchronous reply
+ * code.
+ */
+void kdbus_sync_reply_wakeup(struct kdbus_reply *reply, int err)
@@ -21379,17 +21431,15 @@ index 0000000..008dca8
+ struct kdbus_conn *reply_dst,
+ u64 cookie)
+{
-+ struct kdbus_reply *r, *reply = NULL;
++ struct kdbus_reply *r;
+
+ list_for_each_entry(r, &reply_dst->reply_list, entry) {
+ if (r->cookie == cookie &&
-+ (!replying || r->reply_src == replying)) {
-+ reply = r;
-+ break;
-+ }
++ (!replying || r->reply_src == replying))
++ return r;
+ }
+
-+ return reply;
++ return NULL;
+}
+
+/**
@@ -21538,10 +21588,10 @@ index 0000000..68d5232
+#endif /* __KDBUS_REPLY_H */
diff --git a/ipc/kdbus/util.c b/ipc/kdbus/util.c
new file mode 100644
-index 0000000..eaa806a
+index 0000000..72b1883
--- /dev/null
+++ b/ipc/kdbus/util.c
-@@ -0,0 +1,201 @@
+@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -21594,51 +21644,6 @@ index 0000000..eaa806a
+}
+
+/**
-+ * kdbus_memdup_user() - copy dynamically sized object from user-space
-+ * @user_ptr: user-provided source buffer
-+ * @sz_min: minimum object size
-+ * @sz_max: maximum object size
-+ *
-+ * This copies a dynamically sized object from user-space into kernel-space. We
-+ * require the object to have a 64bit size field at offset 0. We read it out
-+ * first, allocate a suitably sized buffer and then copy all data.
-+ *
-+ * The @sz_min and @sz_max parameters define possible min and max object sizes
-+ * so user-space cannot trigger un-bound kernel-space allocations.
-+ *
-+ * The same alignment-restrictions as described in kdbus_copy_from_user() apply.
-+ *
-+ * Return: pointer to dynamically allocated copy, or ERR_PTR() on failure.
-+ */
-+void *kdbus_memdup_user(void __user *user_ptr, size_t sz_min, size_t sz_max)
-+{
-+ void *ptr;
-+ u64 size;
-+ int ret;
-+
-+ ret = kdbus_copy_from_user(&size, user_ptr, sizeof(size));
-+ if (ret < 0)
-+ return ERR_PTR(ret);
-+
-+ if (size < sz_min)
-+ return ERR_PTR(-EINVAL);
-+
-+ if (size > sz_max)
-+ return ERR_PTR(-EMSGSIZE);
-+
-+ ptr = memdup_user(user_ptr, size);
-+ if (IS_ERR(ptr))
-+ return ptr;
-+
-+ if (*(u64 *)ptr != size) {
-+ kfree(ptr);
-+ return ERR_PTR(-EINVAL);
-+ }
-+
-+ return ptr;
-+}
-+
-+/**
+ * kdbus_verify_uid_prefix() - verify UID prefix of a user-supplied name
+ * @name: user-supplied name to verify
+ * @user_ns: user-namespace to act in
@@ -21745,10 +21750,10 @@ index 0000000..eaa806a
+}
diff --git a/ipc/kdbus/util.h b/ipc/kdbus/util.h
new file mode 100644
-index 0000000..740b198
+index 0000000..5297166
--- /dev/null
+++ b/ipc/kdbus/util.h
-@@ -0,0 +1,74 @@
+@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@@ -21791,7 +21796,7 @@ index 0000000..740b198
+({ \
+ u64 __user *_sz = \
+ (void __user *)((u8 __user *)(_b) + offsetof(_t, _m)); \
-+ copy_to_user(_sz, _s, sizeof(((_t *)0)->_m)); \
++ copy_to_user(_sz, _s, FIELD_SIZEOF(_t, _m)); \
+})
+
+/**
@@ -21815,7 +21820,6 @@ index 0000000..740b198
+int kdbus_sanitize_attach_flags(u64 flags, u64 *attach_flags);
+
+int kdbus_copy_from_user(void *dest, void __user *user_ptr, size_t size);
-+void *kdbus_memdup_user(void __user *user_ptr, size_t sz_min, size_t sz_max);
+
+struct kvec;
+
@@ -21876,7 +21880,7 @@ index 0000000..137f842
+HOSTLOADLIBES_kdbus-workers := -lrt
diff --git a/samples/kdbus/kdbus-api.h b/samples/kdbus/kdbus-api.h
new file mode 100644
-index 0000000..5ed5907
+index 0000000..7f3abae
--- /dev/null
+++ b/samples/kdbus/kdbus-api.h
@@ -0,0 +1,114 @@
@@ -21890,12 +21894,12 @@ index 0000000..5ed5907
+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
+#define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
+#define KDBUS_ITEM_NEXT(item) \
-+ (typeof(item))(((uint8_t *)item) + KDBUS_ALIGN8((item)->size))
++ (typeof(item))((uint8_t *)(item) + KDBUS_ALIGN8((item)->size))
+#define KDBUS_FOREACH(iter, first, _size) \
-+ for (iter = (first); \
++ for ((iter) = (first); \
+ ((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
+ ((uint8_t *)(iter) >= (uint8_t *)(first)); \
-+ iter = (void*)(((uint8_t *)iter) + KDBUS_ALIGN8((iter)->size)))
++ (iter) = (void *)((uint8_t *)(iter) + KDBUS_ALIGN8((iter)->size)))
+
+static inline int kdbus_cmd_bus_make(int control_fd, struct kdbus_cmd *cmd)
+{
@@ -21996,10 +22000,10 @@ index 0000000..5ed5907
+#endif /* KDBUS_API_H */
diff --git a/samples/kdbus/kdbus-workers.c b/samples/kdbus/kdbus-workers.c
new file mode 100644
-index 0000000..d331e01
+index 0000000..c3ba958
--- /dev/null
+++ b/samples/kdbus/kdbus-workers.c
-@@ -0,0 +1,1326 @@
+@@ -0,0 +1,1345 @@
+/*
+ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
+ *
@@ -22059,6 +22063,12 @@ index 0000000..d331e01
+ * top-down, but requires some forward-declarations. Just ignore those.
+ */
+
++#include <stdio.h>
++#include <stdlib.h>
++
++/* glibc < 2.7 does not ship sys/signalfd.h */
++#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 7
++
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
@@ -22067,8 +22077,6 @@ index 0000000..d331e01
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
-+#include <stdio.h>
-+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/poll.h>
@@ -23326,13 +23334,28 @@ index 0000000..d331e01
+
+ return fd;
+}
-diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
-index 4e51122..7b51cce 100644
---- a/tools/testing/selftests/Makefile
-+++ b/tools/testing/selftests/Makefile
-@@ -5,6 +5,7 @@ TARGETS += exec
- TARGETS += firmware
- TARGETS += ftrace
++
++#else
++
++#warning "Skipping compilation due to unsupported libc version"
++
++int main(int argc, char **argv)
++{
++ fprintf(stderr,
++ "Compilation of %s was skipped due to unsupported libc.\n",
++ argv[0]);
++
++ return EXIT_FAILURE;
++}
++
++#endif /* libc sanity check */
+diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
+index 95abddc..b57100c 100644
+--- a/tools/testing/selftests/Makefile
++++ b/tools/testing/selftests/Makefile
+@@ -5,6 +5,7 @@ TARGETS += exec
+ TARGETS += firmware
+ TARGETS += ftrace
TARGETS += kcmp
+TARGETS += kdbus
TARGETS += memfd
@@ -23347,10 +23370,10 @@ index 0000000..d3ef42f
+kdbus-test
diff --git a/tools/testing/selftests/kdbus/Makefile b/tools/testing/selftests/kdbus/Makefile
new file mode 100644
-index 0000000..de8242f
+index 0000000..8f36cb5
--- /dev/null
+++ b/tools/testing/selftests/kdbus/Makefile
-@@ -0,0 +1,48 @@
+@@ -0,0 +1,49 @@
+CFLAGS += -I../../../../usr/include/
+CFLAGS += -I../../../../samples/kdbus/
+CFLAGS += -I../../../../include/uapi/
@@ -23364,7 +23387,6 @@ index 0000000..de8242f
+ kdbus-test.o \
+ kdbus-test.o \
+ test-activator.o \
-+ test-attach-flags.o \
+ test-benchmark.o \
+ test-bus.o \
+ test-chat.o \
@@ -23388,12 +23410,14 @@ index 0000000..de8242f
+
+include ../lib.mk
+
-+%.o: %.c
++%.o: %.c kdbus-enum.h kdbus-test.h kdbus-util.h
+ $(CC) $(CFLAGS) -c $< -o $@
+
+kdbus-test: $(OBJS)
+ $(CC) $(CFLAGS) $^ $(LDLIBS) -o $@
+
++TEST_PROGS := kdbus-test
++
+run_tests:
+ ./kdbus-test --tap
+
@@ -23501,10 +23525,10 @@ index 0000000..4f1e579
+LOOKUP(PAYLOAD);
diff --git a/tools/testing/selftests/kdbus/kdbus-enum.h b/tools/testing/selftests/kdbus/kdbus-enum.h
new file mode 100644
-index 0000000..a67cec3
+index 0000000..ed28cca
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-enum.h
-@@ -0,0 +1,14 @@
+@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ *
@@ -23513,6 +23537,7 @@ index 0000000..a67cec3
+ * Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ */
++
+#pragma once
+
+const char *enum_CMD(long long id);
@@ -23521,10 +23546,10 @@ index 0000000..a67cec3
+const char *enum_PAYLOAD(long long id);
diff --git a/tools/testing/selftests/kdbus/kdbus-test.c b/tools/testing/selftests/kdbus/kdbus-test.c
new file mode 100644
-index 0000000..a43674c
+index 0000000..294e82a
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-test.c
-@@ -0,0 +1,923 @@
+@@ -0,0 +1,900 @@
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
@@ -23575,7 +23600,6 @@ index 0000000..a43674c
+ char *root;
+ char *test;
+ char *busname;
-+ char *mask_param_path;
+};
+
+static const struct kdbus_test tests[] = {
@@ -23801,13 +23825,6 @@ index 0000000..a43674c
+ .func = kdbus_test_benchmark_uds,
+ .flags = TEST_CREATE_BUS,
+ },
-+ {
-+ /* Last test */
-+ .name = "attach-flags",
-+ .desc = "attach flags mask",
-+ .func = kdbus_test_attach_flags,
-+ .flags = 0,
-+ },
+};
+
+#define N_TESTS ((int) (sizeof(tests) / sizeof(tests[0])))
@@ -23850,7 +23867,6 @@ index 0000000..a43674c
+
+ env->root = args->root;
+ env->module = args->module;
-+ env->mask_param_path = args->mask_param_path;
+
+ return 0;
+}
@@ -24281,8 +24297,7 @@ index 0000000..a43674c
+{
+ int ret;
+ bool namespaces;
-+ uint64_t kdbus_param_mask;
-+ static char fspath[4096], parampath[4096];
++ static char fspath[4096];
+
+ namespaces = (kdbus_args->mntns || kdbus_args->pidns ||
+ kdbus_args->userns);
@@ -24318,19 +24333,6 @@ index 0000000..a43674c
+ kdbus_args->root = fspath;
+ }
+
-+ snprintf(parampath, sizeof(parampath),
-+ "/sys/module/%s/parameters/attach_flags_mask",
-+ kdbus_args->module);
-+ kdbus_args->mask_param_path = parampath;
-+
-+ ret = kdbus_sysfs_get_parameter_mask(kdbus_args->mask_param_path,
-+ &kdbus_param_mask);
-+ if (ret < 0)
-+ return TEST_ERR;
-+
-+ printf("# Starting tests with an attach_flags_mask=0x%llx\n",
-+ (unsigned long long)kdbus_param_mask);
-+
+ /* Start tests */
+ if (namespaces)
+ ret = run_tests_in_namespaces(kdbus_args);
@@ -24450,10 +24452,10 @@ index 0000000..a43674c
+}
diff --git a/tools/testing/selftests/kdbus/kdbus-test.h b/tools/testing/selftests/kdbus/kdbus-test.h
new file mode 100644
-index 0000000..6473318
+index 0000000..a5c6ae8
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-test.h
-@@ -0,0 +1,85 @@
+@@ -0,0 +1,83 @@
+#ifndef _TEST_KDBUS_H_
+#define _TEST_KDBUS_H_
+
@@ -24461,7 +24463,6 @@ index 0000000..6473318
+ char *buspath;
+ const char *root;
+ const char *module;
-+ const char *mask_param_path;
+ int control_fd;
+ struct kdbus_conn *conn;
+};
@@ -24500,7 +24501,6 @@ index 0000000..6473318
+ ASSERT_EXIT_VAL(cond, EXIT_FAILURE)
+
+int kdbus_test_activator(struct kdbus_test_env *env);
-+int kdbus_test_attach_flags(struct kdbus_test_env *env);
+int kdbus_test_benchmark(struct kdbus_test_env *env);
+int kdbus_test_benchmark_nomemfds(struct kdbus_test_env *env);
+int kdbus_test_benchmark_uds(struct kdbus_test_env *env);
@@ -24541,10 +24541,10 @@ index 0000000..6473318
+#endif /* _TEST_KDBUS_H_ */
diff --git a/tools/testing/selftests/kdbus/kdbus-util.c b/tools/testing/selftests/kdbus/kdbus-util.c
new file mode 100644
-index 0000000..4b376ec
+index 0000000..29a0cb1
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-util.c
-@@ -0,0 +1,1615 @@
+@@ -0,0 +1,1617 @@
+/*
+ * Copyright (C) 2013-2015 Daniel Mack
+ * Copyright (C) 2013-2015 Kay Sievers
@@ -24955,11 +24955,9 @@ index 0000000..4b376ec
+{
+ int ret, fd;
+
-+ ret = syscall(__NR_memfd_create, name, MFD_ALLOW_SEALING);
-+ if (ret < 0)
-+ return ret;
-+
-+ fd = ret;
++ fd = syscall(__NR_memfd_create, name, MFD_ALLOW_SEALING);
++ if (fd < 0)
++ return fd;
+
+ ret = ftruncate(fd, size);
+ if (ret < 0) {
@@ -25001,8 +24999,8 @@ index 0000000..4b376ec
+ uint64_t cmd_flags,
+ int cancel_fd)
+{
-+ struct kdbus_cmd_send *cmd;
-+ struct kdbus_msg *msg;
++ struct kdbus_cmd_send *cmd = NULL;
++ struct kdbus_msg *msg = NULL;
+ const char ref1[1024 * 128 + 3] = "0123456789_0";
+ const char ref2[] = "0123456789_1";
+ struct kdbus_item *item;
@@ -25011,10 +25009,7 @@ index 0000000..4b376ec
+ int memfd = -1;
+ int ret;
+
-+ size = sizeof(*msg);
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
-+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++ size = sizeof(*msg) + 3 * KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
+
+ if (dst_id == KDBUS_DST_ID_BROADCAST)
+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
@@ -25028,14 +25023,14 @@ index 0000000..4b376ec
+ if (write(memfd, "kdbus memfd 1234567", 19) != 19) {
+ ret = -errno;
+ kdbus_printf("writing to memfd failed: %m\n");
-+ return ret;
++ goto out;
+ }
+
+ ret = sys_memfd_seal_set(memfd);
+ if (ret < 0) {
+ ret = -errno;
+ kdbus_printf("memfd sealing failed: %m\n");
-+ return ret;
++ goto out;
+ }
+
+ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
@@ -25048,7 +25043,7 @@ index 0000000..4b376ec
+ if (!msg) {
+ ret = -errno;
+ kdbus_printf("unable to malloc()!?\n");
-+ return ret;
++ goto out;
+ }
+
+ if (dst_id == KDBUS_DST_ID_BROADCAST)
@@ -25066,7 +25061,7 @@ index 0000000..4b376ec
+ if (timeout) {
+ ret = clock_gettime(CLOCK_MONOTONIC_COARSE, &now);
+ if (ret < 0)
-+ return ret;
++ goto out;
+
+ msg->timeout_ns = now.tv_sec * 1000000000ULL +
+ now.tv_nsec + timeout;
@@ -25117,6 +25112,12 @@ index 0000000..4b376ec
+ size += KDBUS_ITEM_SIZE(sizeof(cancel_fd));
+
+ cmd = malloc(size);
++ if (!cmd) {
++ ret = -errno;
++ kdbus_printf("unable to malloc()!?\n");
++ goto out;
++ }
++
+ cmd->size = size;
+ cmd->flags = cmd_flags;
+ cmd->msg_address = (uintptr_t)msg;
@@ -25131,12 +25132,9 @@ index 0000000..4b376ec
+ }
+
+ ret = kdbus_cmd_send(conn->fd, cmd);
-+ if (memfd >= 0)
-+ close(memfd);
-+
+ if (ret < 0) {
+ kdbus_printf("error sending message: %d (%m)\n", ret);
-+ return ret;
++ goto out;
+ }
+
+ if (cmd_flags & KDBUS_SEND_SYNC_REPLY) {
@@ -25150,13 +25148,17 @@ index 0000000..4b376ec
+
+ ret = kdbus_free(conn, cmd->reply.offset);
+ if (ret < 0)
-+ return ret;
++ goto out;
+ }
+
++out:
+ free(msg);
+ free(cmd);
+
-+ return 0;
++ if (memfd >= 0)
++ close(memfd);
++
++ return ret < 0 ? ret : 0;
+}
+
+int kdbus_msg_send(const struct kdbus_conn *conn, const char *name,
@@ -25900,7 +25902,7 @@ index 0000000..4b376ec
+ return 0;
+}
+
-+int all_uids_gids_are_mapped()
++int all_uids_gids_are_mapped(void)
+{
+ int ret;
+
@@ -26094,7 +26096,7 @@ index 0000000..4b376ec
+ cap_t caps;
+
+ caps = cap_get_proc();
-+ if (!cap) {
++ if (!caps) {
+ ret = -errno;
+ kdbus_printf("error cap_get_proc(): %d (%m)\n", ret);
+ return ret;
@@ -26162,10 +26164,10 @@ index 0000000..4b376ec
+}
diff --git a/tools/testing/selftests/kdbus/kdbus-util.h b/tools/testing/selftests/kdbus/kdbus-util.h
new file mode 100644
-index 0000000..50ff071
+index 0000000..d1a0f1b
--- /dev/null
+++ b/tools/testing/selftests/kdbus/kdbus-util.h
-@@ -0,0 +1,222 @@
+@@ -0,0 +1,219 @@
+/*
+ * Copyright (C) 2013-2015 Kay Sievers
+ * Copyright (C) 2013-2015 Daniel Mack
@@ -26175,6 +26177,7 @@ index 0000000..50ff071
+ * Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ */
++
+#pragma once
+
+#define BIT(X) (1 << (X))
@@ -26194,28 +26197,26 @@ index 0000000..50ff071
+#define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
+
+#define KDBUS_ITEM_NEXT(item) \
-+ (typeof(item))(((uint8_t *)item) + KDBUS_ALIGN8((item)->size))
++ (typeof(item))((uint8_t *)(item) + KDBUS_ALIGN8((item)->size))
+#define KDBUS_ITEM_FOREACH(item, head, first) \
-+ for (item = (head)->first; \
++ for ((item) = (head)->first; \
+ ((uint8_t *)(item) < (uint8_t *)(head) + (head)->size) && \
-+ ((uint8_t *)(item) >= (uint8_t *)(head)); \
-+ item = KDBUS_ITEM_NEXT(item))
++ ((uint8_t *)(item) >= (uint8_t *)(head)); \
++ (item) = KDBUS_ITEM_NEXT(item))
+#define KDBUS_FOREACH(iter, first, _size) \
-+ for (iter = (first); \
++ for ((iter) = (first); \
+ ((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
+ ((uint8_t *)(iter) >= (uint8_t *)(first)); \
-+ iter = (void*)(((uint8_t *)iter) + KDBUS_ALIGN8((iter)->size)))
++ (iter) = (void *)((uint8_t *)(iter) + KDBUS_ALIGN8((iter)->size)))
+
-+
-+#define _KDBUS_ATTACH_BITS_SET_NR (__builtin_popcountll(_KDBUS_ATTACH_ALL))
++#define _KDBUS_ATTACH_BITS_SET_NR (__builtin_popcountll(_KDBUS_ATTACH_ALL))
+
+/* Sum of KDBUS_ITEM_* that reflects _KDBUS_ATTACH_ALL */
-+#define KDBUS_ATTACH_ITEMS_TYPE_SUM \
-+ ((((_KDBUS_ATTACH_BITS_SET_NR - 1) * \
-+ ((_KDBUS_ATTACH_BITS_SET_NR - 1) + 1)) / 2 ) + \
++#define KDBUS_ATTACH_ITEMS_TYPE_SUM \
++ ((((_KDBUS_ATTACH_BITS_SET_NR - 1) * \
++ ((_KDBUS_ATTACH_BITS_SET_NR - 1) + 1)) / 2) + \
+ (_KDBUS_ITEM_ATTACH_BASE * _KDBUS_ATTACH_BITS_SET_NR))
+
-+
+#define POOL_SIZE (16 * 1024LU * 1024LU)
+
+#define UNPRIV_UID 65534
@@ -26273,7 +26274,7 @@ index 0000000..50ff071
+ _setup_; \
+ efd = eventfd(0, EFD_CLOEXEC); \
+ ASSERT_RETURN(efd >= 0); \
-+ *clone_ret = 0; \
++ *(clone_ret) = 0; \
+ pid = syscall(__NR_clone, flags, NULL); \
+ if (pid == 0) { \
+ eventfd_t event_status = 0; \
@@ -26298,7 +26299,7 @@ index 0000000..50ff071
+ ret = TEST_OK; \
+ } else { \
+ ret = -errno; \
-+ *clone_ret = -errno; \
++ *(clone_ret) = -errno; \
+ } \
+ close(efd); \
+ ret; \
@@ -26375,14 +26376,12 @@ index 0000000..50ff071
+ uint64_t type, uint64_t id);
+int kdbus_add_match_empty(struct kdbus_conn *conn);
+
-+int all_uids_gids_are_mapped();
++int all_uids_gids_are_mapped(void);
+int drop_privileges(uid_t uid, gid_t gid);
+uint64_t now(clockid_t clock);
+char *unique_name(const char *prefix);
+
-+int userns_map_uid_gid(pid_t pid,
-+ const char *map_uid,
-+ const char *map_gid);
++int userns_map_uid_gid(pid_t pid, const char *map_uid, const char *map_gid);
+int test_is_capable(int cap, ...);
+int config_user_ns_is_enabled(void);
+int config_auditsyscall_is_enabled(void);
@@ -26712,762 +26711,6 @@ index 0000000..3d1b763
+
+ return TEST_OK;
+}
-diff --git a/tools/testing/selftests/kdbus/test-attach-flags.c b/tools/testing/selftests/kdbus/test-attach-flags.c
-new file mode 100644
-index 0000000..deee7c3
---- /dev/null
-+++ b/tools/testing/selftests/kdbus/test-attach-flags.c
-@@ -0,0 +1,750 @@
-+#include <stdio.h>
-+#include <string.h>
-+#include <stdlib.h>
-+#include <stdbool.h>
-+#include <stddef.h>
-+#include <fcntl.h>
-+#include <unistd.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <assert.h>
-+#include <sys/capability.h>
-+#include <sys/mman.h>
-+#include <sys/stat.h>
-+#include <sys/types.h>
-+#include <linux/unistd.h>
-+
-+#include "kdbus-api.h"
-+#include "kdbus-test.h"
-+#include "kdbus-util.h"
-+#include "kdbus-enum.h"
-+
-+/*
-+ * Should be the sum of the currently supported and compiled-in
-+ * KDBUS_ITEMS_* that reflect KDBUS_ATTACH_* flags.
-+ */
-+static unsigned int KDBUS_TEST_ITEMS_SUM = KDBUS_ATTACH_ITEMS_TYPE_SUM;
-+
-+static struct kdbus_conn *__kdbus_hello(const char *path, uint64_t flags,
-+ uint64_t attach_flags_send,
-+ uint64_t attach_flags_recv)
-+{
-+ struct kdbus_cmd_free cmd_free = {};
-+ int ret, fd;
-+ struct kdbus_conn *conn;
-+ struct {
-+ struct kdbus_cmd_hello hello;
-+
-+ struct {
-+ uint64_t size;
-+ uint64_t type;
-+ char str[16];
-+ } conn_name;
-+
-+ uint8_t extra_items[0];
-+ } h;
-+
-+ memset(&h, 0, sizeof(h));
-+
-+ kdbus_printf("-- opening bus connection %s\n", path);
-+ fd = open(path, O_RDWR|O_CLOEXEC);
-+ if (fd < 0) {
-+ kdbus_printf("--- error %d (%m)\n", fd);
-+ return NULL;
-+ }
-+
-+ h.hello.flags = flags | KDBUS_HELLO_ACCEPT_FD;
-+ h.hello.attach_flags_send = attach_flags_send;
-+ h.hello.attach_flags_recv = attach_flags_recv;
-+ h.conn_name.type = KDBUS_ITEM_CONN_DESCRIPTION;
-+ strcpy(h.conn_name.str, "this-is-my-name");
-+ h.conn_name.size = KDBUS_ITEM_HEADER_SIZE + strlen(h.conn_name.str) + 1;
-+
-+ h.hello.size = sizeof(h);
-+ h.hello.pool_size = POOL_SIZE;
-+
-+ ret = kdbus_cmd_hello(fd, (struct kdbus_cmd_hello *) &h.hello);
-+ if (ret < 0) {
-+ kdbus_printf("--- error when saying hello: %d (%m)\n", ret);
-+ return NULL;
-+ }
-+
-+ kdbus_printf("-- New connection ID : %llu\n",
-+ (unsigned long long)h.hello.id);
-+
-+ cmd_free.size = sizeof(cmd_free);
-+ cmd_free.offset = h.hello.offset;
-+ ret = kdbus_cmd_free(fd, &cmd_free);
-+ if (ret < 0)
-+ return NULL;
-+
-+ conn = malloc(sizeof(*conn));
-+ if (!conn) {
-+ kdbus_printf("unable to malloc()!?\n");
-+ return NULL;
-+ }
-+
-+ conn->buf = mmap(NULL, POOL_SIZE, PROT_READ, MAP_SHARED, fd, 0);
-+ if (conn->buf == MAP_FAILED) {
-+ ret = -errno;
-+ free(conn);
-+ close(fd);
-+ kdbus_printf("--- error mmap: %d (%m)\n", ret);
-+ return NULL;
-+ }
-+
-+ conn->fd = fd;
-+ conn->id = h.hello.id;
-+ return conn;
-+}
-+
-+static int kdbus_test_peers_creation(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ int control_fd;
-+ char *path;
-+ char *busname;
-+ char buspath[2048];
-+ char control_path[2048];
-+ uint64_t attach_flags_mask;
-+ struct kdbus_conn *conn;
-+
-+ snprintf(control_path, sizeof(control_path),
-+ "%s/control", env->root);
-+
-+ /*
-+ * Set kdbus system-wide mask to 0, this has nothing
-+ * to do with the following tests, bus and connection
-+ * creation nor connection update, but we do it so we are
-+ * sure that everything work as expected
-+ */
-+
-+ attach_flags_mask = 0;
-+ ret = kdbus_sysfs_set_parameter_mask(env->mask_param_path,
-+ attach_flags_mask);
-+ ASSERT_RETURN(ret == 0);
-+
-+
-+ /*
-+ * Create bus with a full set of ATTACH flags
-+ */
-+
-+ control_fd = open(control_path, O_RDWR);
-+ ASSERT_RETURN(control_fd >= 0);
-+
-+ busname = unique_name("test-peers-creation-bus");
-+ ASSERT_RETURN(busname);
-+
-+ ret = kdbus_create_bus(control_fd, busname, _KDBUS_ATTACH_ALL,
-+ 0, &path);
-+ ASSERT_RETURN(ret == 0);
-+
-+ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
-+
-+ /*
-+ * Create a connection with an empty send attach flags, or
-+ * with just KDBUS_ATTACH_CREDS, this should fail
-+ */
-+ conn = __kdbus_hello(buspath, 0, 0, 0);
-+ ASSERT_RETURN(conn == NULL);
-+ ASSERT_RETURN(errno == ECONNREFUSED);
-+
-+ conn = __kdbus_hello(buspath, 0, KDBUS_ATTACH_CREDS,
-+ _KDBUS_ATTACH_ALL);
-+ ASSERT_RETURN(conn == NULL);
-+ ASSERT_RETURN(errno == ECONNREFUSED);
-+
-+ conn = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ /* Try to cut back some send attach flags */
-+ ret = kdbus_conn_update_attach_flags(conn,
-+ KDBUS_ATTACH_CREDS|
-+ KDBUS_ATTACH_PIDS,
-+ _KDBUS_ATTACH_ALL);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ ret = kdbus_conn_update_attach_flags(conn,
-+ _KDBUS_ATTACH_ALL, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(conn);
-+ free(path);
-+ free(busname);
-+ close(control_fd);
-+
-+
-+ /* Test a new bus with KDBUS_ATTACH_PIDS */
-+
-+ control_fd = open(control_path, O_RDWR);
-+ ASSERT_RETURN(control_fd >= 0);
-+
-+ busname = unique_name("test-peer-flags-bus");
-+ ASSERT_RETURN(busname);
-+
-+ ret = kdbus_create_bus(control_fd, busname, KDBUS_ATTACH_PIDS,
-+ 0, &path);
-+ ASSERT_RETURN(ret == 0);
-+
-+ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
-+
-+ /*
-+ * Create a connection with an empty send attach flags, or
-+ * all flags except KDBUS_ATTACH_PIDS
-+ */
-+ conn = __kdbus_hello(buspath, 0, 0, 0);
-+ ASSERT_RETURN(conn == NULL);
-+ ASSERT_RETURN(errno == ECONNREFUSED);
-+
-+ conn = __kdbus_hello(buspath, 0,
-+ _KDBUS_ATTACH_ALL & ~KDBUS_ATTACH_PIDS,
-+ _KDBUS_ATTACH_ALL);
-+ ASSERT_RETURN(conn == NULL);
-+ ASSERT_RETURN(errno == ECONNREFUSED);
-+
-+ /* The following should succeed */
-+ conn = __kdbus_hello(buspath, 0, KDBUS_ATTACH_PIDS, 0);
-+ ASSERT_RETURN(conn);
-+ kdbus_conn_free(conn);
-+
-+ conn = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ ret = kdbus_conn_update_attach_flags(conn,
-+ _KDBUS_ATTACH_ALL &
-+ ~KDBUS_ATTACH_PIDS,
-+ _KDBUS_ATTACH_ALL);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ ret = kdbus_conn_update_attach_flags(conn, 0,
-+ _KDBUS_ATTACH_ALL);
-+ ASSERT_RETURN(ret == -EINVAL);
-+
-+ /* Now we want only KDBUS_ATTACH_PIDS */
-+ ret = kdbus_conn_update_attach_flags(conn,
-+ KDBUS_ATTACH_PIDS, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(conn);
-+ free(path);
-+ free(busname);
-+ close(control_fd);
-+
-+
-+ /*
-+ * Create bus with 0 as ATTACH flags, the bus does not
-+ * require any attach flags
-+ */
-+
-+ control_fd = open(control_path, O_RDWR);
-+ ASSERT_RETURN(control_fd >= 0);
-+
-+ busname = unique_name("test-peer-flags-bus");
-+ ASSERT_RETURN(busname);
-+
-+ ret = kdbus_create_bus(control_fd, busname, 0, 0, &path);
-+ ASSERT_RETURN(ret == 0);
-+
-+ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
-+
-+ /* Bus is open it does not require any send attach flags */
-+ conn = __kdbus_hello(buspath, 0, 0, 0);
-+ ASSERT_RETURN(conn);
-+ kdbus_conn_free(conn);
-+
-+ conn = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ ret = kdbus_conn_update_attach_flags(conn, 0, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_conn_update_attach_flags(conn, KDBUS_ATTACH_CREDS, 0);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(conn);
-+ free(path);
-+ free(busname);
-+ close(control_fd);
-+
-+ return 0;
-+}
-+
-+static int kdbus_test_peers_info(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ int control_fd;
-+ char *path;
-+ char *busname;
-+ unsigned int i = 0;
-+ uint64_t offset = 0;
-+ char buspath[2048];
-+ char control_path[2048];
-+ uint64_t attach_flags_mask;
-+ struct kdbus_item *item;
-+ struct kdbus_info *info;
-+ struct kdbus_conn *conn;
-+ struct kdbus_conn *reader;
-+ unsigned long long attach_count = 0;
-+
-+ snprintf(control_path, sizeof(control_path),
-+ "%s/control", env->root);
-+
-+ attach_flags_mask = 0;
-+ ret = kdbus_sysfs_set_parameter_mask(env->mask_param_path,
-+ attach_flags_mask);
-+ ASSERT_RETURN(ret == 0);
-+
-+ control_fd = open(control_path, O_RDWR);
-+ ASSERT_RETURN(control_fd >= 0);
-+
-+ busname = unique_name("test-peers-info-bus");
-+ ASSERT_RETURN(busname);
-+
-+ ret = kdbus_create_bus(control_fd, busname, _KDBUS_ATTACH_ALL,
-+ 0, &path);
-+ ASSERT_RETURN(ret == 0);
-+
-+ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
-+
-+ /* Create connections with the appropriate flags */
-+ conn = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
-+ ASSERT_RETURN(conn);
-+
-+ reader = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
-+ ASSERT_RETURN(reader);
-+
-+ ret = kdbus_conn_info(reader, conn->id, NULL,
-+ _KDBUS_ATTACH_ALL, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(reader->buf + offset);
-+ ASSERT_RETURN(info->id == conn->id);
-+
-+ /* all attach flags are masked, no metadata */
-+ KDBUS_ITEM_FOREACH(item, info, items)
-+ i++;
-+
-+ ASSERT_RETURN(i == 0);
-+
-+ kdbus_free(reader, offset);
-+
-+ /* Set the mask to _KDBUS_ATTACH_ANY */
-+ attach_flags_mask = _KDBUS_ATTACH_ANY;
-+ ret = kdbus_sysfs_set_parameter_mask(env->mask_param_path,
-+ attach_flags_mask);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_conn_info(reader, conn->id, NULL,
-+ _KDBUS_ATTACH_ALL, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(reader->buf + offset);
-+ ASSERT_RETURN(info->id == conn->id);
-+
-+ attach_count = 0;
-+ KDBUS_ITEM_FOREACH(item, info, items)
-+ attach_count += item->type;
-+
-+ /*
-+ * All flags have been returned except for:
-+ * KDBUS_ITEM_TIMESTAMP and
-+ * KDBUS_ITEM_OWNED_NAME we do not own any name.
-+ */
-+ ASSERT_RETURN(attach_count == (KDBUS_TEST_ITEMS_SUM -
-+ KDBUS_ITEM_OWNED_NAME -
-+ KDBUS_ITEM_TIMESTAMP));
-+
-+ kdbus_free(reader, offset);
-+
-+ /* Request only OWNED names */
-+ ret = kdbus_conn_info(reader, conn->id, NULL,
-+ KDBUS_ATTACH_NAMES, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(reader->buf + offset);
-+ ASSERT_RETURN(info->id == conn->id);
-+
-+ attach_count = 0;
-+ KDBUS_ITEM_FOREACH(item, info, items)
-+ attach_count += item->type;
-+
-+ /* we should not get any metadata since we do not own names */
-+ ASSERT_RETURN(attach_count == 0);
-+
-+ kdbus_free(reader, offset);
-+
-+ kdbus_conn_free(conn);
-+ kdbus_conn_free(reader);
-+
-+ return 0;
-+}
-+
-+/**
-+ * @kdbus_mask_param: kdbus module mask parameter (system-wide)
-+ * @requested_meta: The bus owner metadata that we want
-+ * @expected_items: The returned KDBUS_ITEMS_* sum. Used to
-+ * validate the returned metadata items
-+ */
-+static int kdbus_cmp_bus_creator_metadata(struct kdbus_test_env *env,
-+ struct kdbus_conn *conn,
-+ uint64_t kdbus_mask_param,
-+ uint64_t requested_meta,
-+ unsigned long expected_items)
-+{
-+ int ret;
-+ uint64_t offset = 0;
-+ struct kdbus_info *info;
-+ struct kdbus_item *item;
-+ unsigned long attach_count = 0;
-+
-+ ret = kdbus_sysfs_set_parameter_mask(env->mask_param_path,
-+ kdbus_mask_param);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_bus_creator_info(conn, requested_meta, &offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ info = (struct kdbus_info *)(conn->buf + offset);
-+
-+ KDBUS_ITEM_FOREACH(item, info, items)
-+ attach_count += item->type;
-+
-+ ASSERT_RETURN(attach_count == expected_items);
-+
-+ ret = kdbus_free(conn, offset);
-+ ASSERT_RETURN(ret == 0);
-+
-+ return 0;
-+}
-+
-+static int kdbus_test_bus_creator_info(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ int control_fd;
-+ char *path;
-+ char *busname;
-+ char buspath[2048];
-+ char control_path[2048];
-+ uint64_t attach_flags_mask;
-+ struct kdbus_conn *conn;
-+ unsigned long expected_items = 0;
-+
-+ snprintf(control_path, sizeof(control_path),
-+ "%s/control", env->root);
-+
-+ control_fd = open(control_path, O_RDWR);
-+ ASSERT_RETURN(control_fd >= 0);
-+
-+ busname = unique_name("test-peers-info-bus");
-+ ASSERT_RETURN(busname);
-+
-+ /*
-+ * Now the bus allows us to see all its KDBUS_ATTACH_*
-+ * items
-+ */
-+ ret = kdbus_create_bus(control_fd, busname, 0,
-+ _KDBUS_ATTACH_ALL, &path);
-+ ASSERT_RETURN(ret == 0);
-+
-+ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
-+
-+ conn = __kdbus_hello(buspath, 0, 0, 0);
-+ ASSERT_RETURN(conn);
-+
-+ /*
-+ * Start with a kdbus module mask set to _KDBUS_ATTACH_ANY
-+ */
-+ attach_flags_mask = _KDBUS_ATTACH_ANY;
-+
-+ /*
-+ * All flags will be returned except for:
-+ * KDBUS_ITEM_TIMESTAMP
-+ * KDBUS_ITEM_OWNED_NAME
-+ * KDBUS_ITEM_CONN_DESCRIPTION
-+ *
-+ * An extra flags is always returned KDBUS_ITEM_MAKE_NAME
-+ * which contains the bus name
-+ */
-+ expected_items = KDBUS_TEST_ITEMS_SUM + KDBUS_ITEM_MAKE_NAME;
-+ expected_items -= KDBUS_ITEM_TIMESTAMP +
-+ KDBUS_ITEM_OWNED_NAME +
-+ KDBUS_ITEM_CONN_DESCRIPTION;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ _KDBUS_ATTACH_ALL,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * We should have:
-+ * KDBUS_ITEM_PIDS + KDBUS_ITEM_CREDS + KDBUS_ITEM_MAKE_NAME
-+ */
-+ expected_items = KDBUS_ITEM_PIDS + KDBUS_ITEM_CREDS +
-+ KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ KDBUS_ATTACH_PIDS |
-+ KDBUS_ATTACH_CREDS,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* KDBUS_ITEM_MAKE_NAME is always returned */
-+ expected_items = KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ 0, expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Restrict kdbus system-wide mask to KDBUS_ATTACH_PIDS
-+ */
-+
-+ attach_flags_mask = KDBUS_ATTACH_PIDS;
-+
-+ /*
-+ * We should have:
-+ * KDBUS_ITEM_PIDS + KDBUS_ITEM_MAKE_NAME
-+ */
-+ expected_items = KDBUS_ITEM_PIDS + KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ _KDBUS_ATTACH_ALL,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+
-+ /* system-wide mask to 0 */
-+ attach_flags_mask = 0;
-+
-+ /* we should only see: KDBUS_ITEM_MAKE_NAME */
-+ expected_items = KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ _KDBUS_ATTACH_ALL,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(conn);
-+ free(path);
-+ free(busname);
-+ close(control_fd);
-+
-+
-+ /*
-+ * A new bus that hides all its owner metadata
-+ */
-+
-+ control_fd = open(control_path, O_RDWR);
-+ ASSERT_RETURN(control_fd >= 0);
-+
-+ busname = unique_name("test-peers-info-bus");
-+ ASSERT_RETURN(busname);
-+
-+ ret = kdbus_create_bus(control_fd, busname, 0, 0, &path);
-+ ASSERT_RETURN(ret == 0);
-+
-+ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
-+
-+ conn = __kdbus_hello(buspath, 0, 0, 0);
-+ ASSERT_RETURN(conn);
-+
-+ /*
-+ * Start with a kdbus module mask set to _KDBUS_ATTACH_ANY
-+ */
-+ attach_flags_mask = _KDBUS_ATTACH_ANY;
-+
-+ /*
-+ * We only get the KDBUS_ITEM_MAKE_NAME
-+ */
-+ expected_items = KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ _KDBUS_ATTACH_ALL,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * We still get only kdbus_ITEM_MAKE_NAME
-+ */
-+ attach_flags_mask = 0;
-+ expected_items = KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ _KDBUS_ATTACH_ALL,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ kdbus_conn_free(conn);
-+ free(path);
-+ free(busname);
-+ close(control_fd);
-+
-+
-+ /*
-+ * A new bus that shows only the PID and CREDS metadata
-+ * of the bus owner.
-+ */
-+ control_fd = open(control_path, O_RDWR);
-+ ASSERT_RETURN(control_fd >= 0);
-+
-+ busname = unique_name("test-peers-info-bus");
-+ ASSERT_RETURN(busname);
-+
-+ ret = kdbus_create_bus(control_fd, busname, 0,
-+ KDBUS_ATTACH_PIDS|
-+ KDBUS_ATTACH_CREDS, &path);
-+ ASSERT_RETURN(ret == 0);
-+
-+ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
-+
-+ conn = __kdbus_hello(buspath, 0, 0, 0);
-+ ASSERT_RETURN(conn);
-+
-+ /*
-+ * Start with a kdbus module mask set to _KDBUS_ATTACH_ANY
-+ */
-+ attach_flags_mask = _KDBUS_ATTACH_ANY;
-+
-+ /*
-+ * We should have:
-+ * KDBUS_ITEM_PIDS + KDBUS_ITEM_CREDS + KDBUS_ITEM_MAKE_NAME
-+ */
-+ expected_items = KDBUS_ITEM_PIDS + KDBUS_ITEM_CREDS +
-+ KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ _KDBUS_ATTACH_ALL,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ expected_items = KDBUS_ITEM_CREDS + KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ KDBUS_ATTACH_CREDS,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* KDBUS_ITEM_MAKE_NAME is always returned */
-+ expected_items = KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ 0, expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Restrict kdbus system-wide mask to KDBUS_ATTACH_PIDS
-+ */
-+
-+ attach_flags_mask = KDBUS_ATTACH_PIDS;
-+ /*
-+ * We should have:
-+ * KDBUS_ITEM_PIDS + KDBUS_ITEM_MAKE_NAME
-+ */
-+ expected_items = KDBUS_ITEM_PIDS + KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ _KDBUS_ATTACH_ALL,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* No KDBUS_ATTACH_CREDS */
-+ expected_items = KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ KDBUS_ATTACH_CREDS,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* system-wide mask to 0 */
-+ attach_flags_mask = 0;
-+
-+ /* we should only see: KDBUS_ITEM_MAKE_NAME */
-+ expected_items = KDBUS_ITEM_MAKE_NAME;
-+ ret = kdbus_cmp_bus_creator_metadata(env, conn,
-+ attach_flags_mask,
-+ _KDBUS_ATTACH_ALL,
-+ expected_items);
-+ ASSERT_RETURN(ret == 0);
-+
-+
-+ kdbus_conn_free(conn);
-+ free(path);
-+ free(busname);
-+ close(control_fd);
-+
-+ return 0;
-+}
-+
-+int kdbus_test_attach_flags(struct kdbus_test_env *env)
-+{
-+ int ret;
-+ uint64_t flags_mask;
-+ uint64_t old_kdbus_flags_mask;
-+
-+ /* We need CAP_DAC_OVERRIDE to overwrite the kdbus mask */
-+ ret = test_is_capable(CAP_DAC_OVERRIDE, -1);
-+ ASSERT_RETURN(ret >= 0);
-+
-+ /* no enough privileges, SKIP test */
-+ if (!ret)
-+ return TEST_SKIP;
-+
-+ /*
-+ * We need to be able to write to
-+ * "/sys/module/kdbus/parameters/attach_flags_mask"
-+ * perhaps we are unprvileged/privileged in its userns
-+ */
-+ ret = access(env->mask_param_path, W_OK);
-+ if (ret < 0) {
-+ kdbus_printf("--- access() '%s' failed: %d (%m)\n",
-+ env->mask_param_path, -errno);
-+ return TEST_SKIP;
-+ }
-+
-+ ret = kdbus_sysfs_get_parameter_mask(env->mask_param_path,
-+ &old_kdbus_flags_mask);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /* setup the right KDBUS_TEST_ITEMS_SUM */
-+ if (!config_auditsyscall_is_enabled())
-+ KDBUS_TEST_ITEMS_SUM -= KDBUS_ITEM_AUDIT;
-+
-+ if (!config_cgroups_is_enabled())
-+ KDBUS_TEST_ITEMS_SUM -= KDBUS_ITEM_CGROUP;
-+
-+ if (!config_security_is_enabled())
-+ KDBUS_TEST_ITEMS_SUM -= KDBUS_ITEM_SECLABEL;
-+
-+ /*
-+ * Test the connection creation attach flags
-+ */
-+ ret = kdbus_test_peers_creation(env);
-+ /* Restore previous kdbus mask */
-+ kdbus_sysfs_set_parameter_mask(env->mask_param_path,
-+ old_kdbus_flags_mask);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Test the CONN_INFO attach flags
-+ */
-+ ret = kdbus_test_peers_info(env);
-+ /* Restore previous kdbus mask */
-+ kdbus_sysfs_set_parameter_mask(env->mask_param_path,
-+ old_kdbus_flags_mask);
-+ ASSERT_RETURN(ret == 0);
-+
-+ /*
-+ * Test the Bus creator info and its attach flags
-+ */
-+ ret = kdbus_test_bus_creator_info(env);
-+ /* Restore previous kdbus mask */
-+ kdbus_sysfs_set_parameter_mask(env->mask_param_path,
-+ old_kdbus_flags_mask);
-+ ASSERT_RETURN(ret == 0);
-+
-+ ret = kdbus_sysfs_get_parameter_mask(env->mask_param_path,
-+ &flags_mask);
-+ ASSERT_RETURN(ret == 0 && old_kdbus_flags_mask == flags_mask);
-+
-+ return TEST_OK;
-+}
diff --git a/tools/testing/selftests/kdbus/test-benchmark.c b/tools/testing/selftests/kdbus/test-benchmark.c
new file mode 100644
index 0000000..8a9744b
@@ -28236,10 +27479,10 @@ index 0000000..71a92d8
+}
diff --git a/tools/testing/selftests/kdbus/test-connection.c b/tools/testing/selftests/kdbus/test-connection.c
new file mode 100644
-index 0000000..5c2bf35
+index 0000000..e7c4866
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-connection.c
-@@ -0,0 +1,616 @@
+@@ -0,0 +1,606 @@
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
@@ -28427,13 +27670,10 @@ index 0000000..5c2bf35
+ int ret;
+ unsigned int cnt = 0;
+ uint64_t offset = 0;
-+ uint64_t kdbus_flags_mask;
+ struct kdbus_info *info;
+ struct kdbus_conn *conn;
+ struct kdbus_conn *privileged;
+ const struct kdbus_item *item;
-+ uint64_t valid_flags_set;
-+ uint64_t invalid_flags_set;
+ uint64_t valid_flags = KDBUS_ATTACH_NAMES |
+ KDBUS_ATTACH_CREDS |
+ KDBUS_ATTACH_PIDS |
@@ -28469,13 +27709,6 @@ index 0000000..5c2bf35
+ .ppid = getppid(),
+ };
+
-+ ret = kdbus_sysfs_get_parameter_mask(env->mask_param_path,
-+ &kdbus_flags_mask);
-+ ASSERT_RETURN(ret == 0);
-+
-+ valid_flags_set = valid_flags & kdbus_flags_mask;
-+ invalid_flags_set = invalid_flags & kdbus_flags_mask;
-+
+ ret = kdbus_conn_info(env->conn, env->conn->id, NULL,
+ valid_flags, &offset);
+ ASSERT_RETURN(ret == 0);
@@ -28488,7 +27721,7 @@ index 0000000..5c2bf35
+ ASSERT_RETURN(item == NULL);
+
+ item = kdbus_get_item(info, KDBUS_ITEM_CONN_DESCRIPTION);
-+ if (valid_flags_set & KDBUS_ATTACH_CONN_DESCRIPTION) {
++ if (valid_flags & KDBUS_ATTACH_CONN_DESCRIPTION) {
+ ASSERT_RETURN(item);
+ } else {
+ ASSERT_RETURN(item == NULL);
@@ -28513,7 +27746,7 @@ index 0000000..5c2bf35
+ ASSERT_RETURN(item == NULL);
+
+ cnt = kdbus_count_item(info, KDBUS_ITEM_CREDS);
-+ if (valid_flags_set & KDBUS_ATTACH_CREDS) {
++ if (valid_flags & KDBUS_ATTACH_CREDS) {
+ ASSERT_RETURN(cnt == 1);
+
+ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
@@ -28527,7 +27760,7 @@ index 0000000..5c2bf35
+ }
+
+ item = kdbus_get_item(info, KDBUS_ITEM_PIDS);
-+ if (valid_flags_set & KDBUS_ATTACH_PIDS) {
++ if (valid_flags & KDBUS_ATTACH_PIDS) {
+ ASSERT_RETURN(item);
+
+ /* Compare item->pids with cached PIDs */
@@ -28554,7 +27787,7 @@ index 0000000..5c2bf35
+ ASSERT_RETURN(info->id == conn->id);
+
+ item = kdbus_get_item(info, KDBUS_ITEM_OWNED_NAME);
-+ if (valid_flags_set & KDBUS_ATTACH_NAMES) {
++ if (valid_flags & KDBUS_ATTACH_NAMES) {
+ ASSERT_RETURN(item && !strcmp(item->name.name, "com.example.a"));
+ } else {
+ ASSERT_RETURN(item == NULL);
@@ -28582,14 +27815,14 @@ index 0000000..5c2bf35
+ info = (struct kdbus_info *)(conn->buf + offset);
+ ASSERT_EXIT(info->id == conn->id);
+
-+ if (valid_flags_set & KDBUS_ATTACH_NAMES) {
++ if (valid_flags & KDBUS_ATTACH_NAMES) {
+ item = kdbus_get_item(info, KDBUS_ITEM_OWNED_NAME);
+ ASSERT_EXIT(item &&
+ strcmp(item->name.name,
+ "com.example.a") == 0);
+ }
+
-+ if (valid_flags_set & KDBUS_ATTACH_CREDS) {
++ if (valid_flags & KDBUS_ATTACH_CREDS) {
+ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
+ ASSERT_EXIT(item);
+
@@ -28598,7 +27831,7 @@ index 0000000..5c2bf35
+ sizeof(struct kdbus_creds)) == 0);
+ }
+
-+ if (valid_flags_set & KDBUS_ATTACH_PIDS) {
++ if (valid_flags & KDBUS_ATTACH_PIDS) {
+ item = kdbus_get_item(info, KDBUS_ITEM_PIDS);
+ ASSERT_EXIT(item);
+
@@ -28627,7 +27860,7 @@ index 0000000..5c2bf35
+ * it points to the cached creds.
+ */
+ cnt = kdbus_count_item(info, KDBUS_ITEM_CREDS);
-+ if (invalid_flags_set & KDBUS_ATTACH_CREDS) {
++ if (invalid_flags & KDBUS_ATTACH_CREDS) {
+ ASSERT_EXIT(cnt == 1);
+
+ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
@@ -28640,7 +27873,7 @@ index 0000000..5c2bf35
+ ASSERT_EXIT(cnt == 0);
+ }
+
-+ if (invalid_flags_set & KDBUS_ATTACH_PIDS) {
++ if (invalid_flags & KDBUS_ATTACH_PIDS) {
+ cnt = kdbus_count_item(info, KDBUS_ITEM_PIDS);
+ ASSERT_EXIT(cnt == 1);
+
@@ -28653,14 +27886,14 @@ index 0000000..5c2bf35
+ }
+
+ cnt = kdbus_count_item(info, KDBUS_ITEM_CGROUP);
-+ if (invalid_flags_set & KDBUS_ATTACH_CGROUP) {
++ if (invalid_flags & KDBUS_ATTACH_CGROUP) {
+ ASSERT_EXIT(cnt == 1);
+ } else {
+ ASSERT_EXIT(cnt == 0);
+ }
+
+ cnt = kdbus_count_item(info, KDBUS_ITEM_CAPS);
-+ if (invalid_flags_set & KDBUS_ATTACH_CAPS) {
++ if (invalid_flags & KDBUS_ATTACH_CAPS) {
+ ASSERT_EXIT(cnt == 1);
+ } else {
+ ASSERT_EXIT(cnt == 0);
@@ -28684,7 +27917,7 @@ index 0000000..5c2bf35
+ ASSERT_RETURN(info->id == conn->id);
+
+ cnt = kdbus_count_item(info, KDBUS_ITEM_OWNED_NAME);
-+ if (valid_flags_set & KDBUS_ATTACH_NAMES) {
++ if (valid_flags & KDBUS_ATTACH_NAMES) {
+ ASSERT_RETURN(cnt == 2);
+ } else {
+ ASSERT_RETURN(cnt == 0);
@@ -28929,10 +28162,10 @@ index 0000000..8bc2386
+}
diff --git a/tools/testing/selftests/kdbus/test-endpoint.c b/tools/testing/selftests/kdbus/test-endpoint.c
new file mode 100644
-index 0000000..dcc6ab9
+index 0000000..34a7be4
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-endpoint.c
-@@ -0,0 +1,341 @@
+@@ -0,0 +1,352 @@
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
@@ -29190,6 +28423,13 @@ index 0000000..dcc6ab9
+ ep_conn = kdbus_hello(ep, 0, NULL, 0);
+ ASSERT_RETURN(ep_conn);
+
++ /* Check that the reader got the IdAdd notification */
++ ret = kdbus_msg_recv(reader, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_ID_ADD);
++ ASSERT_RETURN(msg->items[0].id_change.id == ep_conn->id);
++ kdbus_msg_free(msg);
++
+ /*
+ * Add a name add match on the endpoint connection, acquire name from
+ * the unfiltered connection, and make sure the filtered connection
@@ -29218,7 +28458,7 @@ index 0000000..dcc6ab9
+ ret = kdbus_conn_info(ep_conn, 0x0fffffffffffffffULL, NULL, 0, NULL);
+ ASSERT_RETURN(ret == -ENXIO);
+
-+ /* Check that the reader did not receive anything */
++ /* Check that the reader did not receive the name notification */
+ ret = kdbus_msg_recv(reader, NULL, NULL);
+ ASSERT_RETURN(ret == -EAGAIN);
+
@@ -29230,6 +28470,10 @@ index 0000000..dcc6ab9
+ ret = kdbus_name_release(env->conn, name);
+ ASSERT_RETURN(ret == 0);
+
++ /* Check that the reader did not receive the name notification */
++ ret = kdbus_msg_recv(reader, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
+ ret = update_endpoint(ep_fd, name);
+ ASSERT_RETURN(ret == 0);
+
@@ -31325,10 +30569,10 @@ index 0000000..f1615da
+}
diff --git a/tools/testing/selftests/kdbus/test-metadata-ns.c b/tools/testing/selftests/kdbus/test-metadata-ns.c
new file mode 100644
-index 0000000..2cb1d4d
+index 0000000..ccdfae0
--- /dev/null
+++ b/tools/testing/selftests/kdbus/test-metadata-ns.c
-@@ -0,0 +1,506 @@
+@@ -0,0 +1,503 @@
+/*
+ * Test metadata in new namespaces. Even if our tests can run
+ * in a namespaced setup, this test is necessary so we can inspect
@@ -31612,16 +30856,13 @@ index 0000000..2cb1d4d
+static int kdbus_clone_userns_test(const char *bus,
+ struct kdbus_conn *conn)
+{
-+ int ret;
-+ int status;
-+ int efd = -1;
++ int ret, status, efd;
+ pid_t pid, ppid;
-+ uint64_t unpriv_conn_id = 0;
-+ uint64_t userns_conn_id = 0;
++ uint64_t unpriv_conn_id, userns_conn_id;
+ struct kdbus_msg *msg;
+ const struct kdbus_item *item;
+ struct kdbus_pids expected_pids;
-+ struct kdbus_conn *monitor = NULL;
++ struct kdbus_conn *monitor;
+
+ kdbus_printf("STARTING TEST 'metadata-ns'.\n");
+
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-06-26 22:36 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-06-26 22:36 UTC (permalink / raw
To: gentoo-commits
commit: 20ba937d586c2e0e21e4f9bf37a1a2935c996147
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Jun 26 22:36:56 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Jun 26 22:36:56 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=20ba937d
Add the kernel-level IPC implementation kdbus as an optional patch.
0000_README | 4 +
5015_kdbus-4.1-rc1.patch | 34698 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 34702 insertions(+)
diff --git a/0000_README b/0000_README
index 69f60dc..d33ec2f 100644
--- a/0000_README
+++ b/0000_README
@@ -82,3 +82,7 @@ Desc: Kernel patch enables gcc < v4.9 optimizations for additional CPUs.
Patch: 5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
From: https://github.com/graysky2/kernel_gcc_patch/
Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs.
+
+Patch: 5015_kdbus-4.1-rc1.patch
+From: https://lkml.org
+Desc: Kernel-level IPC implementation
diff --git a/5015_kdbus-4.1-rc1.patch b/5015_kdbus-4.1-rc1.patch
new file mode 100644
index 0000000..a5169bd
--- /dev/null
+++ b/5015_kdbus-4.1-rc1.patch
@@ -0,0 +1,34698 @@
+diff --git a/Documentation/Makefile b/Documentation/Makefile
+index 6883a1b..5e3fde6 100644
+--- a/Documentation/Makefile
++++ b/Documentation/Makefile
+@@ -1,4 +1,4 @@
+ subdir-y := accounting arm auxdisplay blackfin connector \
+- filesystems filesystems ia64 laptops mic misc-devices \
++ filesystems filesystems ia64 kdbus laptops mic misc-devices \
+ networking pcmcia prctl ptp spi timers vDSO video4linux \
+ watchdog
+diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt
+index 8136e1f..54e091e 100644
+--- a/Documentation/ioctl/ioctl-number.txt
++++ b/Documentation/ioctl/ioctl-number.txt
+@@ -292,6 +292,7 @@ Code Seq#(hex) Include File Comments
+ 0x92 00-0F drivers/usb/mon/mon_bin.c
+ 0x93 60-7F linux/auto_fs.h
+ 0x94 all fs/btrfs/ioctl.h
++0x95 all uapi/linux/kdbus.h kdbus IPC driver
+ 0x97 00-7F fs/ceph/ioctl.h Ceph file system
+ 0x99 00-0F 537-Addinboard driver
+ <mailto:buk@buks.ipn.de>
+diff --git a/Documentation/kdbus/.gitignore b/Documentation/kdbus/.gitignore
+new file mode 100644
+index 0000000..b4a77cc
+--- /dev/null
++++ b/Documentation/kdbus/.gitignore
+@@ -0,0 +1,2 @@
++*.7
++*.html
+diff --git a/Documentation/kdbus/Makefile b/Documentation/kdbus/Makefile
+new file mode 100644
+index 0000000..af87641
+--- /dev/null
++++ b/Documentation/kdbus/Makefile
+@@ -0,0 +1,40 @@
++DOCS := \
++ kdbus.xml \
++ kdbus.bus.xml \
++ kdbus.connection.xml \
++ kdbus.endpoint.xml \
++ kdbus.fs.xml \
++ kdbus.item.xml \
++ kdbus.match.xml \
++ kdbus.message.xml \
++ kdbus.name.xml \
++ kdbus.policy.xml \
++ kdbus.pool.xml
++
++XMLFILES := $(addprefix $(obj)/,$(DOCS))
++MANFILES := $(patsubst %.xml, %.7, $(XMLFILES))
++HTMLFILES := $(patsubst %.xml, %.html, $(XMLFILES))
++
++XMLTO_ARGS := -m $(srctree)/$(src)/stylesheet.xsl --skip-validation
++
++quiet_cmd_db2man = MAN $@
++ cmd_db2man = xmlto man $(XMLTO_ARGS) -o $(obj) $<
++%.7: %.xml
++ @(which xmlto > /dev/null 2>&1) || \
++ (echo "*** You need to install xmlto ***"; \
++ exit 1)
++ $(call cmd,db2man)
++
++quiet_cmd_db2html = HTML $@
++ cmd_db2html = xmlto html-nochunks $(XMLTO_ARGS) -o $(obj) $<
++%.html: %.xml
++ @(which xmlto > /dev/null 2>&1) || \
++ (echo "*** You need to install xmlto ***"; \
++ exit 1)
++ $(call cmd,db2html)
++
++mandocs: $(MANFILES)
++
++htmldocs: $(HTMLFILES)
++
++clean-files := $(MANFILES) $(HTMLFILES)
+diff --git a/Documentation/kdbus/kdbus.bus.xml b/Documentation/kdbus/kdbus.bus.xml
+new file mode 100644
+index 0000000..4b9a0ac
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.bus.xml
+@@ -0,0 +1,359 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus.bus">
++
++ <refentryinfo>
++ <title>kdbus.bus</title>
++ <productname>kdbus.bus</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.bus</refname>
++ <refpurpose>kdbus bus</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++
++ <para>
++ A bus is a resource that is shared between connections in order to
++ transmit messages (see
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>).
++ Each bus is independent, and operations on the bus will not have any
++ effect on other buses. A bus is a management entity that controls the
++ addresses of its connections, their policies and message transactions
++ performed via this bus.
++ </para>
++ <para>
++ Each bus is bound to the mount instance it was created on. It has a
++ custom name that is unique across all buses of a domain. In
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ a bus is presented as a directory. No operations can be performed on
++ the bus itself; instead you need to perform the operations on an endpoint
++ associated with the bus. Endpoints are accessible as files underneath the
++ bus directory. A default endpoint called <constant>bus</constant> is
++ provided on each bus.
++ </para>
++ <para>
++ Bus names may be chosen freely except for one restriction: the name must
++ be prefixed with the numeric effective UID of the creator and a dash. This
++ is required to avoid namespace clashes between different users. When
++ creating a bus, the name that is passed in must be properly formatted, or
++ the kernel will refuse creation of the bus. Example:
++ <literal>1047-foobar</literal> is an acceptable name for a bus
++ registered by a user with UID 1047. However,
++ <literal>1024-foobar</literal> is not, and neither is
++ <literal>foobar</literal>. The UID must be provided in the
++ user-namespace of the bus owner.
++ </para>
++ <para>
++ To create a new bus, you need to open the control file of a domain and
++ employ the <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl. The control
++ file descriptor that was used to issue
++ <constant>KDBUS_CMD_BUS_MAKE</constant> must not previously have been
++ used for any other control-ioctl and must be kept open for the entire
++ life-time of the created bus. Closing it will immediately cleanup the
++ entire bus and all its associated resources and endpoints. Every control
++ file descriptor can only be used to create a single new bus; from that
++ point on, it is not used for any further communication until the final
++ <citerefentry>
++ <refentrytitle>close</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ .
++ </para>
++ <para>
++ Each bus will generate a random, 128-bit UUID upon creation. This UUID
++ will be returned to creators of connections through
++ <varname>kdbus_cmd_hello.id128</varname> and can be used to uniquely
++ identify buses, even across different machines or containers. The UUID
++ will have its variant bits set to <literal>DCE</literal>, and denote
++ version 4 (random). For more details on UUIDs, see <ulink
++ url="https://en.wikipedia.org/wiki/Universally_unique_identifier">
++ the Wikipedia article on UUIDs</ulink>.
++ </para>
++
++ </refsect1>
++
++ <refsect1>
++ <title>Creating buses</title>
++ <para>
++ To create a new bus, the <constant>KDBUS_CMD_BUS_MAKE</constant>
++ command is used. It takes a <type>struct kdbus_cmd</type> argument.
++ </para>
++ <programlisting>
++struct kdbus_cmd {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>The flags for creation.</para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_MAKE_ACCESS_GROUP</constant></term>
++ <listitem>
++ <para>Make the bus file group-accessible.</para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_MAKE_ACCESS_WORLD</constant></term>
++ <listitem>
++ <para>Make the bus file world-accessible.</para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Requests a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will return
++ <errorcode>0</errorcode>, and the <varname>flags</varname>
++ field will have all bits set that are valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ The following items (see
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>)
++ are expected for <constant>KDBUS_CMD_BUS_MAKE</constant>.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_MAKE_NAME</constant></term>
++ <listitem>
++ <para>
++ Contains a null-terminated string that identifies the
++ bus. The name must be unique across the kdbus domain and
++ must start with the effective UID of the caller, followed by
++ a '<literal>-</literal>' (dash). This item is mandatory.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_BLOOM_PARAMETER</constant></term>
++ <listitem>
++ <para>
++ Bus-wide bloom parameters passed in a
++ <type>struct kdbus_bloom_parameter</type>. These settings are
++ copied back to new connections verbatim. This item is
++ mandatory. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for a more detailed description of this item.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_RECV</constant></term>
++ <listitem>
++ <para>
++ An optional item that contains a set of required attach flags
++ that connections must allow. This item is used as a
++ negotiation measure during connection creation. If connections
++ do not satisfy the bus requirements, they are not allowed on
++ the bus. If not set, the bus does not require any metadata to
++ be attached; in this case connections are free to set their
++ own attach flags.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant></term>
++ <listitem>
++ <para>
++ An optional item that contains a set of attach flags that are
++ returned to connections when they query the bus creator
++ metadata. If not set, no metadata is returned.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
++ <listitem><para>
++ With this item, programs can <emphasis>probe</emphasis> the
++ kernel for known item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Return value</title>
++ <para>
++ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
++ on error, <errorcode>-1</errorcode> is returned, and
++ <varname>errno</varname> is set to indicate the error.
++ If the issued ioctl is illegal for the file descriptor used,
++ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
++ </para>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_BUS_MAKE</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EBADMSG</constant></term>
++ <listitem><para>
++ A mandatory item is missing.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ The flags supplied in the <constant>struct kdbus_cmd</constant>
++ are invalid or the supplied name does not start with the current
++ UID and a '<literal>-</literal>' (dash).
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EEXIST</constant></term>
++ <listitem><para>
++ A bus of that name already exists.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ESHUTDOWN</constant></term>
++ <listitem><para>
++ The kdbus mount instance for the bus was already shut down.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EMFILE</constant></term>
++ <listitem><para>
++ The maximum number of buses for the current user is exhausted.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.connection.xml b/Documentation/kdbus/kdbus.connection.xml
+new file mode 100644
+index 0000000..cefb419
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.connection.xml
+@@ -0,0 +1,1250 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus.connection">
++
++ <refentryinfo>
++ <title>kdbus.connection</title>
++ <productname>kdbus.connection</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.connection</refname>
++ <refpurpose>kdbus connection</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++
++ <para>
++ Connections are identified by their <emphasis>connection ID</emphasis>,
++ internally implemented as a <type>uint64_t</type> counter.
++ The IDs of every newly created bus start at <constant>1</constant>, and
++ every new connection will increment the counter by <constant>1</constant>.
++ The IDs are not reused.
++ </para>
++ <para>
++ In higher level tools, the user visible representation of a connection is
++ defined by the D-Bus protocol specification as
++ <constant>":1.<ID>"</constant>.
++ </para>
++ <para>
++ Messages with a specific <type>uint64_t</type> destination ID are
++ directly delivered to the connection with the corresponding ID. Signal
++ messages (see
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>)
++ may be addressed to the special destination ID
++ <constant>KDBUS_DST_ID_BROADCAST</constant> (~0ULL) and will then
++ potentially be delivered to all currently active connections on the bus.
++ However, in order to receive any signal messages, clients must subscribe
++ to them by installing a match (see
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>).
++ </para>
++ <para>
++ Messages synthesized and sent directly by the kernel will carry the
++ special source ID <constant>KDBUS_SRC_ID_KERNEL</constant> (0).
++ </para>
++ <para>
++ In addition to the unique <type>uint64_t</type> connection ID,
++ established connections can request the ownership of
++ <emphasis>well-known names</emphasis>, under which they can be found and
++ addressed by other bus clients. A well-known name is associated with one
++ and only one connection at a time. See
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ on name acquisition, the name registry, and the validity of names.
++ </para>
++ <para>
++ Messages can specify the special destination ID
++ <constant>KDBUS_DST_ID_NAME</constant> (0) and carry a well-known name
++ in the message data. Such a message is delivered to the destination
++ connection which owns that well-known name.
++ </para>
++
++ <programlisting><![CDATA[
++ +-------------------------------------------------------------------------+
++ | +---------------+ +---------------------------+ |
++ | | Connection | | Message | -----------------+ |
++ | | :1.22 | --> | src: 22 | | |
++ | | | | dst: 25 | | |
++ | | | | | | |
++ | | | | | | |
++ | | | +---------------------------+ | |
++ | | | | |
++ | | | <--------------------------------------+ | |
++ | +---------------+ | | |
++ | | | |
++ | +---------------+ +---------------------------+ | | |
++ | | Connection | | Message | -----+ | |
++ | | :1.25 | --> | src: 25 | | |
++ | | | | dst: 0xffffffffffffffff | -------------+ | |
++ | | | | (KDBUS_DST_ID_BROADCAST) | | | |
++ | | | | | ---------+ | | |
++ | | | +---------------------------+ | | | |
++ | | | | | | |
++ | | | <--------------------------------------------------+ |
++ | +---------------+ | | |
++ | | | |
++ | +---------------+ +---------------------------+ | | |
++ | | Connection | | Message | --+ | | |
++ | | :1.55 | --> | src: 55 | | | | |
++ | | | | dst: 0 / org.foo.bar | | | | |
++ | | | | | | | | |
++ | | | | | | | | |
++ | | | +---------------------------+ | | | |
++ | | | | | | |
++ | | | <------------------------------------------+ | |
++ | +---------------+ | | |
++ | | | |
++ | +---------------+ | | |
++ | | Connection | | | |
++ | | :1.81 | | | |
++ | | org.foo.bar | | | |
++ | | | | | |
++ | | | | | |
++ | | | <-----------------------------------+ | |
++ | | | | |
++ | | | <----------------------------------------------+ |
++ | +---------------+ |
++ +-------------------------------------------------------------------------+
++ ]]></programlisting>
++ </refsect1>
++
++ <refsect1>
++ <title>Privileged connections</title>
++ <para>
++ A connection is considered <emphasis>privileged</emphasis> if the user
++ it was created by is the same that created the bus, or if the creating
++ task had <constant>CAP_IPC_OWNER</constant> set when it called
++ <constant>KDBUS_CMD_HELLO</constant> (see below).
++ </para>
++ <para>
++ Privileged connections have permission to employ certain restricted
++ functions and commands, which are explained below and in other kdbus
++ man-pages.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Activator and policy holder connection</title>
++ <para>
++ An <emphasis>activator</emphasis> connection is a placeholder for a
++ <emphasis>well-known name</emphasis>. Messages sent to such a connection
++ can be used to start an implementer connection, which will then get all
++ the messages from the activator copied over. An activator connection
++ cannot be used to send any message.
++ </para>
++ <para>
++ A <emphasis>policy holder</emphasis> connection only installs a policy
++ for one or more names. These policy entries are kept active as long as
++ the connection is alive, and are removed once it terminates. Such a
++ policy connection type can be used to deploy restrictions for names that
++ are not yet active on the bus. A policy holder connection cannot be used
++ to send any message.
++ </para>
++ <para>
++ The creation of activator or policy holder connections is restricted to
++ privileged users on the bus (see above).
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Monitor connections</title>
++ <para>
++ Monitors are eavesdropping connections that receive all the traffic on the
++ bus, but is invisible to other connections. Such connections have all
++ properties of any other, regular connection, except for the following
++ details:
++ </para>
++
++ <itemizedlist>
++ <listitem><para>
++ They will get every message sent over the bus, both unicasts and
++ broadcasts.
++ </para></listitem>
++
++ <listitem><para>
++ Installing matches for signal messages is neither necessary
++ nor allowed.
++ </para></listitem>
++
++ <listitem><para>
++ They cannot send messages or be directly addressed as receiver.
++ </para></listitem>
++
++ <listitem><para>
++ They cannot own well-known names. Therefore, they also can't operate as
++ activators.
++ </para></listitem>
++
++ <listitem><para>
++ Their creation and destruction will not cause
++ <constant>KDBUS_ITEM_ID_{ADD,REMOVE}</constant> (see
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>).
++ </para></listitem>
++
++ <listitem><para>
++ They are not listed with their unique name in name registry dumps
++ (see <constant>KDBUS_CMD_NAME_LIST</constant> in
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>), so other connections cannot detect the presence of
++ a monitor.
++ </para></listitem>
++ </itemizedlist>
++ <para>
++ The creation of monitor connections is restricted to privileged users on
++ the bus (see above).
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Creating connections</title>
++ <para>
++ A connection to a bus is created by opening an endpoint file (see
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>)
++ of a bus and becoming an active client with the
++ <constant>KDBUS_CMD_HELLO</constant> ioctl. Every connection has a unique
++ identifier on the bus and can address messages to every other connection
++ on the same bus by using the peer's connection ID as the destination.
++ </para>
++ <para>
++ The <constant>KDBUS_CMD_HELLO</constant> ioctl takes a <type>struct
++ kdbus_cmd_hello</type> as argument.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd_hello {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 attach_flags_send;
++ __u64 attach_flags_recv;
++ __u64 bus_flags;
++ __u64 id;
++ __u64 pool_size;
++ __u64 offset;
++ __u8 id128[16];
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem>
++ <para>Flags to apply to this connection</para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_HELLO_ACCEPT_FD</constant></term>
++ <listitem>
++ <para>
++ When this flag is set, the connection can be sent file
++ descriptors as message payload of unicast messages. If it's
++ not set, an attempt to send file descriptors will result in
++ <constant>-ECOMM</constant> on the sender's side.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_HELLO_ACTIVATOR</constant></term>
++ <listitem>
++ <para>
++ Make this connection an activator (see above). With this bit
++ set, an item of type <constant>KDBUS_ITEM_NAME</constant> has
++ to be attached. This item describes the well-known name this
++ connection should be an activator for.
++ A connection can not be an activator and a policy holder at
++ the same time time, so this bit is not allowed together with
++ <constant>KDBUS_HELLO_POLICY_HOLDER</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_HELLO_POLICY_HOLDER</constant></term>
++ <listitem>
++ <para>
++ Make this connection a policy holder (see above). With this
++ bit set, an item of type <constant>KDBUS_ITEM_NAME</constant>
++ has to be attached. This item describes the well-known name
++ this connection should hold a policy for.
++ A connection can not be an activator and a policy holder at
++ the same time time, so this bit is not allowed together with
++ <constant>KDBUS_HELLO_ACTIVATOR</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_HELLO_MONITOR</constant></term>
++ <listitem>
++ <para>
++ Make this connection a monitor connection (see above).
++ </para>
++ <para>
++ This flag can only be set by privileged bus connections. See
++ below for more information.
++ A connection can not be monitor and an activator or a policy
++ holder at the same time time, so this bit is not allowed
++ together with <constant>KDBUS_HELLO_ACTIVATOR</constant> or
++ <constant>KDBUS_HELLO_POLICY_HOLDER</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Requests a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will return
++ <errorcode>0</errorcode>, and the <varname>flags</varname>
++ field will have all bits set that are valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>attach_flags_send</varname></term>
++ <listitem><para>
++ Set the bits for metadata this connection permits to be sent to the
++ receiving peer. Only metadata items that are both allowed to be sent
++ by the sender and that are requested by the receiver will be attached
++ to the message. Note, however, that the bus may optionally require
++ some of those bits to be set. If the match fails, the ioctl will fail
++ with <varname>errno</varname> set to
++ <constant>ECONNREFUSED</constant>. In either case, when returning the
++ field will be set to the mask of metadata items that are enforced by
++ the bus with the <constant>KDBUS_FLAGS_KERNEL</constant> bit set as
++ well.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>attach_flags_recv</varname></term>
++ <listitem><para>
++ Request the attachment of metadata for each message received by this
++ connection. See
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for information about metadata, and
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ regarding items in general.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>bus_flags</varname></term>
++ <listitem><para>
++ Upon successful completion of the ioctl, this member will contain the
++ flags of the bus it connected to.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>id</varname></term>
++ <listitem><para>
++ Upon successful completion of the command, this member will contain
++ the numerical ID of the new connection.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>pool_size</varname></term>
++ <listitem><para>
++ The size of the communication pool, in bytes. The pool can be
++ accessed by calling
++ <citerefentry>
++ <refentrytitle>mmap</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ on the file descriptor that was used to issue the
++ <constant>KDBUS_CMD_HELLO</constant> ioctl.
++ The pool size of a connection must be greater than
++ <constant>0</constant> and a multiple of
++ <constant>PAGE_SIZE</constant>. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>offset</varname></term>
++ <listitem><para>
++ The kernel will return the offset in the pool where returned details
++ will be stored. See below.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>id128</varname></term>
++ <listitem><para>
++ Upon successful completion of the ioctl, this member will contain the
++ <emphasis>128-bit UUID</emphasis> of the connected bus.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ Variable list of items containing optional additional information.
++ The following items are currently expected/valid:
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CONN_DESCRIPTION</constant></term>
++ <listitem>
++ <para>
++ Contains a string that describes this connection, so it can
++ be identified later.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NAME</constant></term>
++ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
++ <listitem>
++ <para>
++ For activators and policy holders only, combinations of
++ these two items describe policy access entries. See
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further details.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CREDS</constant></term>
++ <term><constant>KDBUS_ITEM_PIDS</constant></term>
++ <term><constant>KDBUS_ITEM_SECLABEL</constant></term>
++ <listitem>
++ <para>
++ Privileged bus users may submit these types in order to
++ create connections with faked credentials. This information
++ will be returned when peer information is queried by
++ <constant>KDBUS_CMD_CONN_INFO</constant>. See below for more
++ information on retrieving information on connections.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
++ <listitem><para>
++ With this item, programs can <emphasis>probe</emphasis> the
++ kernel for known item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ At the offset returned in the <varname>offset</varname> field of
++ <type>struct kdbus_cmd_hello</type>, the kernel will store items
++ of the following types:
++ </para>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_BLOOM_PARAMETER</constant></term>
++ <listitem>
++ <para>
++ Bloom filter parameter as defined by the bus creator.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ The offset in the pool has to be freed with the
++ <constant>KDBUS_CMD_FREE</constant> ioctl. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further information.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Retrieving information on a connection</title>
++ <para>
++ The <constant>KDBUS_CMD_CONN_INFO</constant> ioctl can be used to
++ retrieve credentials and properties of the initial creator of a
++ connection. This ioctl uses the following struct.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd_info {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 id;
++ __u64 attach_flags;
++ __u64 offset;
++ __u64 info_size;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ Currently, no flags are supported.
++ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
++ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
++ and the <varname>flags</varname> field is set to
++ <constant>0</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>id</varname></term>
++ <listitem><para>
++ The numerical ID of the connection for which information is to be
++ retrieved. If set to a non-zero value, the
++ <constant>KDBUS_ITEM_OWNED_NAME</constant> item is ignored.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>attach_flags</varname></term>
++ <listitem><para>
++ Specifies which metadata items should be attached to the answer. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>offset</varname></term>
++ <listitem><para>
++ When the ioctl returns, this field will contain the offset of the
++ connection information inside the caller's pool. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further information.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>info_size</varname></term>
++ <listitem><para>
++ The kernel will return the size of the returned information, so
++ applications can optionally
++ <citerefentry>
++ <refentrytitle>mmap</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ specific parts of the pool. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further information.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ The following items are expected for
++ <constant>KDBUS_CMD_CONN_INFO</constant>.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_OWNED_NAME</constant></term>
++ <listitem>
++ <para>
++ Contains the well-known name of the connection to look up as.
++ This item is mandatory if the <varname>id</varname> field is
++ set to 0.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
++ <listitem><para>
++ With this item, programs can <emphasis>probe</emphasis> the
++ kernel for known item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ When the ioctl returns, the following struct will be stored in the
++ caller's pool at <varname>offset</varname>. The fields in this struct
++ are described below.
++ </para>
++
++ <programlisting>
++struct kdbus_info {
++ __u64 size;
++ __u64 id;
++ __u64 flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>id</varname></term>
++ <listitem><para>
++ The connection's unique ID.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ The connection's flags as specified when it was created.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ Depending on the <varname>flags</varname> field in
++ <type>struct kdbus_cmd_info</type>, items of types
++ <constant>KDBUS_ITEM_OWNED_NAME</constant> and
++ <constant>KDBUS_ITEM_CONN_DESCRIPTION</constant> may follow here.
++ <constant>KDBUS_ITEM_NEGOTIATE</constant> is also allowed.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Once the caller is finished with parsing the return buffer, it needs to
++ employ the <constant>KDBUS_CMD_FREE</constant> command for the offset, in
++ order to free the buffer part. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further information.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Getting information about a connection's bus creator</title>
++ <para>
++ The <constant>KDBUS_CMD_BUS_CREATOR_INFO</constant> ioctl takes the same
++ struct as <constant>KDBUS_CMD_CONN_INFO</constant>, but is used to
++ retrieve information about the creator of the bus the connection is
++ attached to. The metadata returned by this call is collected during the
++ creation of the bus and is never altered afterwards, so it provides
++ pristine information on the task that created the bus, at the moment when
++ it did so.
++ </para>
++ <para>
++ In response to this call, a slice in the connection's pool is allocated
++ and filled with an object of type <type>struct kdbus_info</type>,
++ pointed to by the ioctl's <varname>offset</varname> field.
++ </para>
++
++ <programlisting>
++struct kdbus_info {
++ __u64 size;
++ __u64 id;
++ __u64 flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>id</varname></term>
++ <listitem><para>
++ The bus ID.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ The bus flags as specified when it was created.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ Metadata information is stored in items here. The item list
++ contains a <constant>KDBUS_ITEM_MAKE_NAME</constant> item that
++ indicates the bus name of the calling connection.
++ <constant>KDBUS_ITEM_NEGOTIATE</constant> is allowed to probe
++ for known item types.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Once the caller is finished with parsing the return buffer, it needs to
++ employ the <constant>KDBUS_CMD_FREE</constant> command for the offset, in
++ order to free the buffer part. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further information.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Updating connection details</title>
++ <para>
++ Some of a connection's details can be updated with the
++ <constant>KDBUS_CMD_CONN_UPDATE</constant> ioctl, using the file
++ descriptor that was used to create the connection. The update command
++ uses the following struct.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ Currently, no flags are supported.
++ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
++ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
++ and the <varname>flags</varname> field is set to
++ <constant>0</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ Items to describe the connection details to be updated. The
++ following item types are supported.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant></term>
++ <listitem>
++ <para>
++ Supply a new set of metadata items that this connection
++ permits to be sent along with messages.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_RECV</constant></term>
++ <listitem>
++ <para>
++ Supply a new set of metadata items that this connection
++ requests to be attached to each message.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NAME</constant></term>
++ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
++ <listitem>
++ <para>
++ Policy holder connections may supply a new set of policy
++ information with these items. For other connection types,
++ <constant>EOPNOTSUPP</constant> is returned in
++ <varname>errno</varname>.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
++ <listitem><para>
++ With this item, programs can <emphasis>probe</emphasis> the
++ kernel for known item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect1>
++
++ <refsect1>
++ <title>Termination of connections</title>
++ <para>
++ A connection can be terminated by simply calling
++ <citerefentry>
++ <refentrytitle>close</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ on its file descriptor. All pending incoming messages will be discarded,
++ and the memory allocated by the pool will be freed.
++ </para>
++
++ <para>
++ An alternative way of closing down a connection is via the
++ <constant>KDBUS_CMD_BYEBYE</constant> ioctl. This ioctl will succeed only
++ if the message queue of the connection is empty at the time of closing;
++ otherwise, the ioctl will fail with <varname>errno</varname> set to
++ <constant>EBUSY</constant>. When this ioctl returns
++ successfully, the connection has been terminated and won't accept any new
++ messages from remote peers. This way, a connection can be terminated
++ race-free, without losing any messages. The ioctl takes an argument of
++ type <type>struct kdbus_cmd</type>.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ Currently, no flags are supported.
++ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
++ valid flags. If set, the ioctl will fail with
++ <varname>errno</varname> set to <constant>EPROTO</constant>, and
++ the <varname>flags</varname> field is set to <constant>0</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ The following item types are supported.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
++ <listitem><para>
++ With this item, programs can <emphasis>probe</emphasis> the
++ kernel for known item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect1>
++
++ <refsect1>
++ <title>Return value</title>
++ <para>
++ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
++ on error, <errorcode>-1</errorcode> is returned, and
++ <varname>errno</varname> is set to indicate the error.
++ If the issued ioctl is illegal for the file descriptor used,
++ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
++ </para>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_HELLO</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EFAULT</constant></term>
++ <listitem><para>
++ The supplied pool size was 0 or not a multiple of the page size.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ The flags supplied in <type>struct kdbus_cmd_hello</type>
++ are invalid.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ An illegal combination of
++ <constant>KDBUS_HELLO_MONITOR</constant>,
++ <constant>KDBUS_HELLO_ACTIVATOR</constant> and
++ <constant>KDBUS_HELLO_POLICY_HOLDER</constant> was passed in
++ <varname>flags</varname>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ An invalid set of items was supplied.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ECONNREFUSED</constant></term>
++ <listitem><para>
++ The attach_flags_send field did not satisfy the requirements of
++ the bus.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EPERM</constant></term>
++ <listitem><para>
++ A <constant>KDBUS_ITEM_CREDS</constant> items was supplied, but the
++ current user is not privileged.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ESHUTDOWN</constant></term>
++ <listitem><para>
++ The bus you were trying to connect to has already been shut down.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EMFILE</constant></term>
++ <listitem><para>
++ The maximum number of connections on the bus has been reached.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EOPNOTSUPP</constant></term>
++ <listitem><para>
++ The endpoint does not support the connection flags supplied in
++ <type>struct kdbus_cmd_hello</type>.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_BYEBYE</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EALREADY</constant></term>
++ <listitem><para>
++ The connection has already been shut down.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EBUSY</constant></term>
++ <listitem><para>
++ There are still messages queued up in the connection's pool.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_CONN_INFO</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Invalid flags, or neither an ID nor a name was provided, or the
++ name is invalid.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ESRCH</constant></term>
++ <listitem><para>
++ Connection lookup by name failed.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ENXIO</constant></term>
++ <listitem><para>
++ No connection with the provided connection ID found.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_CONN_UPDATE</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Illegal flags or items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Wildcards submitted in policy entries, or illegal sequence
++ of policy items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EOPNOTSUPP</constant></term>
++ <listitem><para>
++ Operation not supported by connection.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>E2BIG</constant></term>
++ <listitem><para>
++ Too many policy items attached.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.endpoint.xml b/Documentation/kdbus/kdbus.endpoint.xml
+new file mode 100644
+index 0000000..6632485
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.endpoint.xml
+@@ -0,0 +1,429 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus.endpoint">
++
++ <refentryinfo>
++ <title>kdbus.endpoint</title>
++ <productname>kdbus.endpoint</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.endpoint</refname>
++ <refpurpose>kdbus endpoint</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++
++ <para>
++ Endpoints are entry points to a bus (see
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>).
++ By default, each bus has a default
++ endpoint called 'bus'. The bus owner has the ability to create custom
++ endpoints with specific names, permissions, and policy databases
++ (see below). An endpoint is presented as file underneath the directory
++ of the parent bus.
++ </para>
++ <para>
++ To create a custom endpoint, open the default endpoint
++ (<literal>bus</literal>) and use the
++ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> ioctl with
++ <type>struct kdbus_cmd</type>. Custom endpoints always have a policy
++ database that, by default, forbids any operation. You have to explicitly
++ install policy entries to allow any operation on this endpoint.
++ </para>
++ <para>
++ Once <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> succeeded, the new
++ endpoint will appear in the filesystem
++ (<citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>), and the used file descriptor will manage the
++ newly created endpoint resource. It cannot be used to manage further
++ resources and must be kept open as long as the endpoint is needed. The
++ endpoint will be terminated as soon as the file descriptor is closed.
++ </para>
++ <para>
++ Endpoint names may be chosen freely except for one restriction: the name
++ must be prefixed with the numeric effective UID of the creator and a dash.
++ This is required to avoid namespace clashes between different users. When
++ creating an endpoint, the name that is passed in must be properly
++ formatted or the kernel will refuse creation of the endpoint. Example:
++ <literal>1047-my-endpoint</literal> is an acceptable name for an
++ endpoint registered by a user with UID 1047. However,
++ <literal>1024-my-endpoint</literal> is not, and neither is
++ <literal>my-endpoint</literal>. The UID must be provided in the
++ user-namespace of the bus.
++ </para>
++ <para>
++ To create connections to a bus, use <constant>KDBUS_CMD_HELLO</constant>
++ on a file descriptor returned by <function>open()</function> on an
++ endpoint node. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further details.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Creating custom endpoints</title>
++ <para>
++ To create a new endpoint, the
++ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> command is used. Along with
++ the endpoint's name, which will be used to expose the endpoint in the
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>,
++ the command also optionally takes items to set up the endpoint's
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> takes a
++ <type>struct kdbus_cmd</type> argument.
++ </para>
++ <programlisting>
++struct kdbus_cmd {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>The flags for creation.</para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_MAKE_ACCESS_GROUP</constant></term>
++ <listitem>
++ <para>Make the endpoint file group-accessible.</para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_MAKE_ACCESS_WORLD</constant></term>
++ <listitem>
++ <para>Make the endpoint file world-accessible.</para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Requests a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will return
++ <errorcode>0</errorcode>, and the <varname>flags</varname>
++ field will have all bits set that are valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ The following items are expected for
++ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_MAKE_NAME</constant></term>
++ <listitem>
++ <para>Contains a string to identify the endpoint name.</para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NAME</constant></term>
++ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
++ <listitem>
++ <para>
++ These items are used to set the policy attached to the
++ endpoint. For more details on bus and endpoint policies, see
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <varname>EINVAL</varname>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect1>
++
++ <refsect1>
++ <title>Updating endpoints</title>
++ <para>
++ To update an existing endpoint, the
++ <constant>KDBUS_CMD_ENDPOINT_UPDATE</constant> command is used on the file
++ descriptor that was used to create the endpoint, using
++ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>. The only relevant detail of
++ the endpoint that can be updated is the policy. When the command is
++ employed, the policy of the endpoint is <emphasis>replaced</emphasis>
++ atomically with the new set of rules.
++ The command takes a <type>struct kdbus_cmd</type> argument.
++ </para>
++ <programlisting>
++struct kdbus_cmd {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ Unused for this command.
++ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
++ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
++ and the <varname>flags</varname> field is set to
++ <constant>0</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ The following items are expected for
++ <constant>KDBUS_CMD_ENDPOINT_UPDATE</constant>.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NAME</constant></term>
++ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
++ <listitem>
++ <para>
++ These items are used to set the policy attached to the
++ endpoint. For more details on bus and endpoint policies, see
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ Existing policy is atomically replaced with the new rules
++ provided.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
++ <listitem><para>
++ With this item, programs can <emphasis>probe</emphasis> the
++ kernel for known item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect1>
++
++ <refsect1>
++ <title>Return value</title>
++ <para>
++ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
++ on error, <errorcode>-1</errorcode> is returned, and
++ <varname>errno</varname> is set to indicate the error.
++ If the issued ioctl is illegal for the file descriptor used,
++ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
++ </para>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> may fail with the
++ following errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ The flags supplied in the <type>struct kdbus_cmd</type>
++ are invalid.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Illegal combination of <constant>KDBUS_ITEM_NAME</constant> and
++ <constant>KDBUS_ITEM_POLICY_ACCESS</constant> was provided.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EEXIST</constant></term>
++ <listitem><para>
++ An endpoint of that name already exists.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EPERM</constant></term>
++ <listitem><para>
++ The calling user is not privileged. See
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for information about privileged users.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_ENDPOINT_UPDATE</constant> may fail with the
++ following errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ The flags supplied in <type>struct kdbus_cmd</type>
++ are invalid.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Illegal combination of <constant>KDBUS_ITEM_NAME</constant> and
++ <constant>KDBUS_ITEM_POLICY_ACCESS</constant> was provided.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.fs.xml b/Documentation/kdbus/kdbus.fs.xml
+new file mode 100644
+index 0000000..8c2a90e
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.fs.xml
+@@ -0,0 +1,124 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus_fs">
++
++ <refentryinfo>
++ <title>kdbus.fs</title>
++ <productname>kdbus.fs</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.fs</refname>
++ <refpurpose>kdbus file system</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>File-system Layout</title>
++
++ <para>
++ The <emphasis>kdbusfs</emphasis> pseudo filesystem provides access to
++ kdbus entities, such as <emphasis>buses</emphasis> and
++ <emphasis>endpoints</emphasis>. Each time the filesystem is mounted,
++ a new, isolated kdbus instance is created, which is independent from the
++ other instances.
++ </para>
++ <para>
++ The system-wide standard mount point for <emphasis>kdbusfs</emphasis> is
++ <constant>/sys/fs/kdbus</constant>.
++ </para>
++
++ <para>
++ Buses are represented as directories in the file system layout, whereas
++ endpoints are exposed as files inside these directories. At the top-level,
++ a <emphasis>control</emphasis> node is present, which can be opened to
++ create new buses via the <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl.
++ Each <emphasis>bus</emphasis> shows a default endpoint called
++ <varname>bus</varname>, which can be opened to either create a connection
++ with the <constant>KDBUS_CMD_HELLO</constant> ioctl, or to create new
++ custom endpoints for the bus with
++ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>. See
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>,
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry> and
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++
++ <para>Following, you can see an example layout of the
++ <emphasis>kdbusfs</emphasis> filesystem:</para>
++
++<programlisting>
++ /sys/fs/kdbus/ ; mount-point
++ |-- 0-system ; bus directory
++ | |-- bus ; default endpoint
++ | `-- 1017-custom ; custom endpoint
++ |-- 1000-user ; bus directory
++ | |-- bus ; default endpoint
++ | |-- 1000-service-A ; custom endpoint
++ | `-- 1000-service-B ; custom endpoint
++ `-- control ; control file
++</programlisting>
++ </refsect1>
++
++ <refsect1>
++ <title>Mounting instances</title>
++ <para>
++ In order to get a new and separate kdbus environment, a new instance
++ of <emphasis>kdbusfs</emphasis> can be mounted like this:
++ </para>
++<programlisting>
++ # mount -t kdbusfs kdbusfs /tmp/new_kdbus/
++</programlisting>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>mount</refentrytitle>
++ <manvolnum>8</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.item.xml b/Documentation/kdbus/kdbus.item.xml
+new file mode 100644
+index 0000000..09f8b90
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.item.xml
+@@ -0,0 +1,839 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus">
++
++ <refentryinfo>
++ <title>kdbus.item</title>
++ <productname>kdbus item</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.item</refname>
++ <refpurpose>kdbus item structure, layout and usage</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++
++ <para>
++ To flexibly augment transport structures, data blobs of type
++ <type>struct kdbus_item</type> can be attached to the structs passed
++ into the ioctls. Some ioctls make items of certain types mandatory,
++ others are optional. Items that are unsupported by ioctls they are
++ attached to will cause the ioctl to fail with <varname>errno</varname>
++ set to <constant>EINVAL</constant>.
++ Items are also used for information stored in a connection's
++ <emphasis>pool</emphasis>, such as received messages, name lists or
++ requested connection or bus owner information. Depending on the type of
++ an item, its total size is either fixed or variable.
++ </para>
++
++ <refsect2>
++ <title>Chaining items</title>
++ <para>
++ Whenever items are used as part of the kdbus kernel API, they are
++ embedded in structs that are embedded inside structs that themselves
++ include a size field containing the overall size of the structure.
++ This allows multiple items to be chained up, and an item iterator
++ (see below) is capable of detecting the end of an item chain.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Alignment</title>
++ <para>
++ The kernel expects all items to be aligned to 8-byte boundaries.
++ Unaligned items will cause the ioctl they are used with to fail
++ with <varname>errno</varname> set to <constant>EINVAL</constant>.
++ An item that has an unaligned size itself hence needs to be padded
++ if it is followed by another item.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Iterating items</title>
++ <para>
++ A simple iterator would iterate over the items until the items have
++ reached the embedding structure's overall size. An example
++ implementation is shown below.
++ </para>
++
++ <programlisting><![CDATA[
++#define KDBUS_ALIGN8(val) (((val) + 7) & ~7)
++
++#define KDBUS_ITEM_NEXT(item) \
++ (typeof(item))(((uint8_t *)item) + KDBUS_ALIGN8((item)->size))
++
++#define KDBUS_ITEM_FOREACH(item, head, first) \
++ for (item = (head)->first; \
++ ((uint8_t *)(item) < (uint8_t *)(head) + (head)->size) && \
++ ((uint8_t *)(item) >= (uint8_t *)(head)); \
++ item = KDBUS_ITEM_NEXT(item))
++ ]]></programlisting>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>Item layout</title>
++ <para>
++ A <type>struct kdbus_item</type> consists of a
++ <varname>size</varname> field, describing its overall size, and a
++ <varname>type</varname> field, both 64 bit wide. They are followed by
++ a union to store information that is specific to the item's type.
++ The struct layout is shown below.
++ </para>
++
++ <programlisting>
++struct kdbus_item {
++ __u64 size;
++ __u64 type;
++ /* item payload - see below */
++ union {
++ __u8 data[0];
++ __u32 data32[0];
++ __u64 data64[0];
++ char str[0];
++
++ __u64 id;
++ struct kdbus_vec vec;
++ struct kdbus_creds creds;
++ struct kdbus_pids pids;
++ struct kdbus_audit audit;
++ struct kdbus_caps caps;
++ struct kdbus_timestamp timestamp;
++ struct kdbus_name name;
++ struct kdbus_bloom_parameter bloom_parameter;
++ struct kdbus_bloom_filter bloom_filter;
++ struct kdbus_memfd memfd;
++ int fds[0];
++ struct kdbus_notify_name_change name_change;
++ struct kdbus_notify_id_change id_change;
++ struct kdbus_policy_access policy_access;
++ };
++};
++ </programlisting>
++
++ <para>
++ <type>struct kdbus_item</type> should never be used to allocate
++ an item instance, as its size may grow in future releases of the API.
++ Instead, it should be manually assembled by storing the
++ <varname>size</varname>, <varname>type</varname> and payload to a
++ struct of its own.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Item types</title>
++
++ <refsect2>
++ <title>Negotiation item</title>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
++ <listitem><para>
++ With this item is attached to any ioctl, programs can
++ <emphasis>probe</emphasis> the kernel for known item types.
++ The item carries an array of <type>uint64_t</type> values in
++ <varname>item.data64</varname>, each set to an item type to
++ probe. The kernel will reset each member of this array that is
++ not recognized as valid item type to <constant>0</constant>.
++ This way, users can negotiate kernel features at start-up to
++ keep newer userspace compatible with older kernels. This item
++ is never attached by the kernel in response to any command.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>Command specific items</title>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_PAYLOAD_VEC</constant></term>
++ <term><constant>KDBUS_ITEM_PAYLOAD_OFF</constant></term>
++ <listitem><para>
++ Messages are directly copied by the sending process into the
++ receiver's
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ This way, two peers can exchange data by effectively doing a
++ single-copy from one process to another; the kernel will not buffer
++ the data anywhere else. <constant>KDBUS_ITEM_PAYLOAD_VEC</constant>
++ is used when <emphasis>sending</emphasis> message. The item
++ references a memory address when the payload data can be found.
++ <constant>KDBUS_ITEM_PAYLOAD_OFF</constant> is used when messages
++ are <emphasis>received</emphasis>, and the
++ <constant>offset</constant> value describes the offset inside the
++ receiving connection's
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ where the message payload can be found. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on passing of payload data along with a
++ message.
++ <programlisting>
++struct kdbus_vec {
++ __u64 size;
++ union {
++ __u64 address;
++ __u64 offset;
++ };
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant></term>
++ <listitem><para>
++ Transports a file descriptor of a <emphasis>memfd</emphasis> in
++ <type>struct kdbus_memfd</type> in <varname>item.memfd</varname>.
++ The <varname>size</varname> field has to match the actual size of
++ the memfd that was specified when it was created. The
++ <varname>start</varname> parameter denotes the offset inside the
++ memfd at which the referenced payload starts. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on passing of payload data along with a
++ message.
++ <programlisting>
++struct kdbus_memfd {
++ __u64 start;
++ __u64 size;
++ int fd;
++ __u32 __pad;
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_FDS</constant></term>
++ <listitem><para>
++ Contains an array of <emphasis>file descriptors</emphasis>.
++ When used with <constant>KDBUS_CMD_SEND</constant>, the values of
++ this array must be filled with valid file descriptor numbers.
++ When received as item attached to a message, the array will
++ contain the numbers of the installed file descriptors, or
++ <constant>-1</constant> in case an error occurred.
++ In either case, the number of entries in the array is derived from
++ the item's total size. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>Items specific to some commands</title>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CANCEL_FD</constant></term>
++ <listitem><para>
++ Transports a file descriptor that can be used to cancel a
++ synchronous <constant>KDBUS_CMD_SEND</constant> operation by
++ writing to it. The file descriptor is stored in
++ <varname>item.fd[0]</varname>. The item may only contain one
++ file descriptor. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on this item and how to use it.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_BLOOM_PARAMETER</constant></term>
++ <listitem><para>
++ Contains a set of <emphasis>bloom parameters</emphasis> as
++ <type>struct kdbus_bloom_parameter</type> in
++ <varname>item.bloom_parameter</varname>.
++ The item is passed from userspace to kernel during the
++ <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl, and returned
++ verbatim when <constant>KDBUS_CMD_HELLO</constant> is called.
++ The kernel does not use the bloom parameters, but they need to
++ be known by each connection on the bus in order to define the
++ bloom filter hash details. See
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on matching and bloom filters.
++ <programlisting>
++struct kdbus_bloom_parameter {
++ __u64 size;
++ __u64 n_hash;
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_BLOOM_FILTER</constant></term>
++ <listitem><para>
++ Carries a <emphasis>bloom filter</emphasis> as
++ <type>struct kdbus_bloom_filter</type> in
++ <varname>item.bloom_filter</varname>. It is mandatory to send this
++ item attached to a <type>struct kdbus_msg</type>, in case the
++ message is a signal. This item is never transported from kernel to
++ userspace. See
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on matching and bloom filters.
++ <programlisting>
++struct kdbus_bloom_filter {
++ __u64 generation;
++ __u64 data[0];
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_BLOOM_MASK</constant></term>
++ <listitem><para>
++ Transports a <emphasis>bloom mask</emphasis> as binary data blob
++ stored in <varname>item.data</varname>. This item is used to
++ describe a match into a connection's match database. See
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on matching and bloom filters.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_DST_NAME</constant></term>
++ <listitem><para>
++ Contains a <emphasis>well-known name</emphasis> to send a
++ message to, as null-terminated string in
++ <varname>item.str</varname>. This item is used with
++ <constant>KDBUS_CMD_SEND</constant>. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on how to send a message.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_MAKE_NAME</constant></term>
++ <listitem><para>
++ Contains a <emphasis>bus name</emphasis> or
++ <emphasis>endpoint name</emphasis>, stored as null-terminated
++ string in <varname>item.str</varname>. This item is sent from
++ userspace to kernel when buses or endpoints are created, and
++ returned back to userspace when the bus creator information is
++ queried. See
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ and
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant></term>
++ <term><constant>KDBUS_ITEM_ATTACH_FLAGS_RECV</constant></term>
++ <listitem><para>
++ Contains a set of <emphasis>attach flags</emphasis> at
++ <emphasis>send</emphasis> or <emphasis>receive</emphasis> time. See
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>,
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry> and
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on attach flags.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ID</constant></term>
++ <listitem><para>
++ Transports a connection's <emphasis>numerical ID</emphasis> of
++ a connection as <type>uint64_t</type> value in
++ <varname>item.id</varname>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NAME</constant></term>
++ <listitem><para>
++ Transports a name associated with the
++ <emphasis>name registry</emphasis> as null-terminated string as
++ <type>struct kdbus_name</type> in
++ <varname>item.name</varname>. The <varname>flags</varname>
++ contains the flags of the name. See
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on how to access the name registry of a bus.
++ <programlisting>
++struct kdbus_name {
++ __u64 flags;
++ char name[0];
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>Items attached by the kernel as metadata</title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_TIMESTAMP</constant></term>
++ <listitem><para>
++ Contains both the <emphasis>monotonic</emphasis> and the
++ <emphasis>realtime</emphasis> timestamp, taken when the message
++ was processed on the kernel side.
++ Stored as <type>struct kdbus_timestamp</type> in
++ <varname>item.timestamp</varname>.
++ <programlisting>
++struct kdbus_timestamp {
++ __u64 seqnum;
++ __u64 monotonic_ns;
++ __u64 realtime_ns;
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CREDS</constant></term>
++ <listitem><para>
++ Contains a set of <emphasis>user</emphasis> and
++ <emphasis>group</emphasis> information as 32-bit values, in the
++ usual four flavors: real, effective, saved and filesystem related.
++ Stored as <type>struct kdbus_creds</type> in
++ <varname>item.creds</varname>.
++ <programlisting>
++struct kdbus_creds {
++ __u32 uid;
++ __u32 euid;
++ __u32 suid;
++ __u32 fsuid;
++ __u32 gid;
++ __u32 egid;
++ __u32 sgid;
++ __u32 fsgid;
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_PIDS</constant></term>
++ <listitem><para>
++ Contains the <emphasis>PID</emphasis>, <emphasis>TID</emphasis>
++ and <emphasis>parent PID (PPID)</emphasis> of a remote peer.
++ Stored as <type>struct kdbus_pids</type> in
++ <varname>item.pids</varname>.
++ <programlisting>
++struct kdbus_pids {
++ __u64 pid;
++ __u64 tid;
++ __u64 ppid;
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_AUXGROUPS</constant></term>
++ <listitem><para>
++ Contains the <emphasis>auxiliary (supplementary) groups</emphasis>
++ a remote peer is a member of, stored as array of
++ <type>uint32_t</type> values in <varname>item.data32</varname>.
++ The array length can be determined by looking at the item's total
++ size, subtracting the size of the header and dividing the
++ remainder by <constant>sizeof(uint32_t)</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_OWNED_NAME</constant></term>
++ <listitem><para>
++ Contains a <emphasis>well-known name</emphasis> currently owned
++ by a connection. The name is stored as null-terminated string in
++ <varname>item.str</varname>. Its length can also be derived from
++ the item's total size.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_TID_COMM</constant> [*]</term>
++ <listitem><para>
++ Contains the <emphasis>comm</emphasis> string of a task's
++ <emphasis>TID</emphasis> (thread ID), stored as null-terminated
++ string in <varname>item.str</varname>. Its length can also be
++ derived from the item's total size. Receivers of this item should
++ not use its contents for any kind of security measures. See below.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_PID_COMM</constant> [*]</term>
++ <listitem><para>
++ Contains the <emphasis>comm</emphasis> string of a task's
++ <emphasis>PID</emphasis> (process ID), stored as null-terminated
++ string in <varname>item.str</varname>. Its length can also be
++ derived from the item's total size. Receivers of this item should
++ not use its contents for any kind of security measures. See below.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_EXE</constant> [*]</term>
++ <listitem><para>
++ Contains the <emphasis>path to the executable</emphasis> of a task,
++ stored as null-terminated string in <varname>item.str</varname>. Its
++ length can also be derived from the item's total size. Receivers of
++ this item should not use its contents for any kind of security
++ measures. See below.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CMDLINE</constant> [*]</term>
++ <listitem><para>
++ Contains the <emphasis>command line arguments</emphasis> of a
++ task, stored as an <emphasis>array</emphasis> of null-terminated
++ strings in <varname>item.str</varname>. The total length of all
++ strings in the array can be derived from the item's total size.
++ Receivers of this item should not use its contents for any kind
++ of security measures. See below.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CGROUP</constant></term>
++ <listitem><para>
++ Contains the <emphasis>cgroup path</emphasis> of a task, stored
++ as null-terminated string in <varname>item.str</varname>. Its
++ length can also be derived from the item's total size.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CAPS</constant></term>
++ <listitem><para>
++ Contains sets of <emphasis>capabilities</emphasis>, stored as
++ <type>struct kdbus_caps</type> in <varname>item.caps</varname>.
++ As the item size may increase in the future, programs should be
++ written in a way that it takes
++ <varname>item.caps.last_cap</varname> into account, and derive
++ the number of sets and rows from the item size and the reported
++ number of valid capability bits.
++ <programlisting>
++struct kdbus_caps {
++ __u32 last_cap;
++ __u32 caps[0];
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_SECLABEL</constant></term>
++ <listitem><para>
++ Contains the <emphasis>LSM label</emphasis> of a task, stored as
++ null-terminated string in <varname>item.str</varname>. Its length
++ can also be derived from the item's total size.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_AUDIT</constant></term>
++ <listitem><para>
++ Contains the audit <emphasis>sessionid</emphasis> and
++ <emphasis>loginuid</emphasis> of a task, stored as
++ <type>struct kdbus_audit</type> in
++ <varname>item.audit</varname>.
++ <programlisting>
++struct kdbus_audit {
++ __u32 sessionid;
++ __u32 loginuid;
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CONN_DESCRIPTION</constant></term>
++ <listitem><para>
++ Contains the <emphasis>connection description</emphasis>, as set
++ by <constant>KDBUS_CMD_HELLO</constant> or
++ <constant>KDBUS_CMD_CONN_UPDATE</constant>, stored as
++ null-terminated string in <varname>item.str</varname>. Its length
++ can also be derived from the item's total size.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ All metadata is automatically translated into the
++ <emphasis>namespaces</emphasis> of the task that receives them. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information.
++ </para>
++
++ <para>
++ [*] Note that the content stored in metadata items of type
++ <constant>KDBUS_ITEM_TID_COMM</constant>,
++ <constant>KDBUS_ITEM_PID_COMM</constant>,
++ <constant>KDBUS_ITEM_EXE</constant> and
++ <constant>KDBUS_ITEM_CMDLINE</constant>
++ can easily be tampered by the sending tasks. Therefore, they should
++ <emphasis>not</emphasis> be used for any sort of security relevant
++ assumptions. The only reason they are transmitted is to let
++ receivers know about details that were set when metadata was
++ collected, even though the task they were collected from is not
++ active any longer when the items are received.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Items used for policy entries, matches and notifications</title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_POLICY_ACCESS</constant></term>
++ <listitem><para>
++ This item describes a <emphasis>policy access</emphasis> entry to
++ access the policy database of a
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry> or
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ Please refer to
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on the policy database and how to access it.
++ <programlisting>
++struct kdbus_policy_access {
++ __u64 type;
++ __u64 access;
++ __u64 id;
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ID_ADD</constant></term>
++ <term><constant>KDBUS_ITEM_ID_REMOVE</constant></term>
++ <listitem><para>
++ This item is sent as attachment to a
++ <emphasis>kernel notification</emphasis> and indicates that a
++ new connection was created on the bus, or that a connection was
++ disconnected, respectively. It stores a
++ <type>struct kdbus_notify_id_change</type> in
++ <varname>item.id_change</varname>.
++ The <varname>id</varname> field contains the numeric ID of the
++ connection that was added or removed, and <varname>flags</varname>
++ is set to the connection flags, as passed by
++ <constant>KDBUS_CMD_HELLO</constant>. See
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ and
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on matches and notification messages.
++ <programlisting>
++struct kdbus_notify_id_change {
++ __u64 id;
++ __u64 flags;
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NAME_ADD</constant></term>
++ <term><constant>KDBUS_ITEM_NAME_REMOVE</constant></term>
++ <term><constant>KDBUS_ITEM_NAME_CHANGE</constant></term>
++ <listitem><para>
++ This item is sent as attachment to a
++ <emphasis>kernel notification</emphasis> and indicates that a
++ <emphasis>well-known name</emphasis> appeared, disappeared or
++ transferred to another owner on the bus. It stores a
++ <type>struct kdbus_notify_name_change</type> in
++ <varname>item.name_change</varname>.
++ <varname>old_id</varname> describes the former owner of the name
++ and is set to <constant>0</constant> values in case of
++ <constant>KDBUS_ITEM_NAME_ADD</constant>.
++ <varname>new_id</varname> describes the new owner of the name and
++ is set to <constant>0</constant> values in case of
++ <constant>KDBUS_ITEM_NAME_REMOVE</constant>.
++ The <varname>name</varname> field contains the well-known name the
++ notification is about, as null-terminated string. See
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ and
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on matches and notification messages.
++ <programlisting>
++struct kdbus_notify_name_change {
++ struct kdbus_notify_id_change old_id;
++ struct kdbus_notify_id_change new_id;
++ char name[0];
++};
++ </programlisting>
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_REPLY_TIMEOUT</constant></term>
++ <listitem><para>
++ This item is sent as attachment to a
++ <emphasis>kernel notification</emphasis>. It informs the receiver
++ that an expected reply to a message was not received in time.
++ The remote peer ID and the message cookie are stored in the message
++ header. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information about messages, timeouts and notifications.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_REPLY_DEAD</constant></term>
++ <listitem><para>
++ This item is sent as attachment to a
++ <emphasis>kernel notification</emphasis>. It informs the receiver
++ that a remote connection a reply is expected from was disconnected
++ before that reply was sent. The remote peer ID and the message
++ cookie are stored in the message header. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information about messages, timeouts and notifications.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>memfd_create</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.match.xml b/Documentation/kdbus/kdbus.match.xml
+new file mode 100644
+index 0000000..ae38e04
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.match.xml
+@@ -0,0 +1,555 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus.match">
++
++ <refentryinfo>
++ <title>kdbus.match</title>
++ <productname>kdbus.match</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.match</refname>
++ <refpurpose>kdbus match</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++
++ <para>
++ kdbus connections can install matches in order to subscribe to signal
++ messages sent on the bus. Such signal messages can be either directed
++ to a single connection (by setting a specific connection ID in
++ <varname>struct kdbus_msg.dst_id</varname> or by sending it to a
++ well-known name), or to potentially <emphasis>all</emphasis> currently
++ active connections on the bus (by setting
++ <varname>struct kdbus_msg.dst_id</varname> to
++ <constant>KDBUS_DST_ID_BROADCAST</constant>).
++ A signal message always has the <constant>KDBUS_MSG_SIGNAL</constant>
++ bit set in the <varname>flags</varname> bitfield.
++ Also, signal messages can originate from either the kernel (called
++ <emphasis>notifications</emphasis>), or from other bus connections.
++ In either case, a bus connection needs to have a suitable
++ <emphasis>match</emphasis> installed in order to receive any signal
++ message. Without any rules installed in the connection, no signal message
++ will be received.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Matches for signal messages from other connections</title>
++ <para>
++ Matches for messages from other connections (not kernel notifications)
++ are implemented as bloom filters (see below). The sender adds certain
++ properties of the message as elements to a bloom filter bit field, and
++ sends that along with the signal message.
++
++ The receiving connection adds the message properties it is interested in
++ as elements to a bloom mask bit field, and uploads the mask as match rule,
++ possibly along with some other rules to further limit the match.
++
++ The kernel will match the signal message's bloom filter against the
++ connection's bloom mask (simply by &-ing it), and will decide whether
++ the message should be delivered to a connection.
++ </para>
++ <para>
++ The kernel has no notion of any specific properties of the signal message,
++ all it sees are the bit fields of the bloom filter and the mask to match
++ against. The use of bloom filters allows simple and efficient matching,
++ without exposing any message properties or internals to the kernel side.
++ Clients need to deal with the fact that they might receive signal messages
++ which they did not subscribe to, as the bloom filter might allow
++ false-positives to pass the filter.
++
++ To allow the future extension of the set of elements in the bloom filter,
++ the filter specifies a <emphasis>generation</emphasis> number. A later
++ generation must always contain all elements of the set of the previous
++ generation, but can add new elements to the set. The match rules mask can
++ carry an array with all previous generations of masks individually stored.
++ When the filter and mask are matched by the kernel, the mask with the
++ closest matching generation is selected as the index into the mask array.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Bloom filters</title>
++ <para>
++ Bloom filters allow checking whether a given word is present in a
++ dictionary. This allows connections to set up a mask for information it
++ is interested in, and will be delivered signal messages that have a
++ matching filter.
++
++ For general information, see
++ <ulink url="https://en.wikipedia.org/wiki/Bloom_filter">the Wikipedia
++ article on bloom filters</ulink>.
++ </para>
++ <para>
++ The size of the bloom filter is defined per bus when it is created, in
++ <varname>kdbus_bloom_parameter.size</varname>. All bloom filters attached
++ to signal messages on the bus must match this size, and all bloom filter
++ matches uploaded by connections must also match the size, or a multiple
++ thereof (see below).
++
++ The calculation of the mask has to be done in userspace applications. The
++ kernel just checks the bitmasks to decide whether or not to let the
++ message pass. All bits in the mask must match the filter in and bit-wise
++ <emphasis>AND</emphasis> logic, but the mask may have more bits set than
++ the filter. Consequently, false positive matches are expected to happen,
++ and programs must deal with that fact by checking the contents of the
++ payload again at receive time.
++ </para>
++ <para>
++ Masks are entities that are always passed to the kernel as part of a
++ match (with an item of type <constant>KDBUS_ITEM_BLOOM_MASK</constant>),
++ and filters can be attached to signals, with an item of type
++ <constant>KDBUS_ITEM_BLOOM_FILTER</constant>. For a filter to match, all
++ its bits have to be set in the match mask as well.
++ </para>
++ <para>
++ For example, consider a bus that has a bloom size of 8 bytes, and the
++ following mask/filter combinations:
++ </para>
++ <programlisting><![CDATA[
++ filter 0x0101010101010101
++ mask 0x0101010101010101
++ -> matches
++
++ filter 0x0303030303030303
++ mask 0x0101010101010101
++ -> doesn't match
++
++ filter 0x0101010101010101
++ mask 0x0303030303030303
++ -> matches
++ ]]></programlisting>
++
++ <para>
++ Hence, in order to catch all messages, a mask filled with
++ <constant>0xff</constant> bytes can be installed as a wildcard match rule.
++ </para>
++
++ <refsect2>
++ <title>Generations</title>
++
++ <para>
++ Uploaded matches may contain multiple masks, which have to be as large
++ as the bloom filter size defined by the bus. Each block of a mask is
++ called a <emphasis>generation</emphasis>, starting at index 0.
++
++ At match time, when a signal is about to be delivered, a bloom mask
++ generation is passed, which denotes which of the bloom masks the filter
++ should be matched against. This allows programs to provide backward
++ compatible masks at upload time, while older clients can still match
++ against older versions of filters.
++ </para>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>Matches for kernel notifications</title>
++ <para>
++ To receive kernel generated notifications (see
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>),
++ a connection must install match rules that are different from
++ the bloom filter matches described in the section above. They can be
++ filtered by the connection ID that caused the notification to be sent, by
++ one of the names it currently owns, or by the type of the notification
++ (ID/name add/remove/change).
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Adding a match</title>
++ <para>
++ To add a match, the <constant>KDBUS_CMD_MATCH_ADD</constant> ioctl is
++ used, which takes a <type>struct kdbus_cmd_match</type> as an argument
++ described below.
++
++ Note that each of the items attached to this command will internally
++ create one match <emphasis>rule</emphasis>, and the collection of them,
++ which is submitted as one block via the ioctl, is called a
++ <emphasis>match</emphasis>. To allow a message to pass, all rules of a
++ match have to be satisfied. Hence, adding more items to the command will
++ only narrow the possibility of a match to effectively let the message
++ pass, and will decrease the chance that the connection's process will be
++ woken up needlessly.
++
++ Multiple matches can be installed per connection. As long as one of it has
++ a set of rules which allows the message to pass, this one will be
++ decisive.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd_match {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 cookie;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>Flags to control the behavior of the ioctl.</para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_MATCH_REPLACE</constant></term>
++ <listitem>
++ <para>Make the endpoint file group-accessible</para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Requests a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will return
++ <errorcode>0</errorcode>, and the <varname>flags</varname>
++ field will have all bits set that are valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>cookie</varname></term>
++ <listitem><para>
++ A cookie which identifies the match, so it can be referred to when
++ removing it.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ Items to define the actual rules of the matches. The following item
++ types are expected. Each item will create one new match rule.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_BLOOM_MASK</constant></term>
++ <listitem>
++ <para>
++ An item that carries the bloom filter mask to match against
++ in its data field. The payload size must match the bloom
++ filter size that was specified when the bus was created.
++ See the "Bloom filters" section above for more information on
++ bloom filters.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NAME</constant></term>
++ <listitem>
++ <para>
++ When used as part of kernel notifications, this item specifies
++ a name that is acquired, lost or that changed its owner (see
++ below). When used as part of a match for user-generated signal
++ messages, it specifies a name that the sending connection must
++ own at the time of sending the signal.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ID</constant></term>
++ <listitem>
++ <para>
++ Specify a sender connection's ID that will match this rule.
++ For kernel notifications, this specifies the ID of a
++ connection that was added to or removed from the bus.
++ For used-generated signals, it specifies the ID of the
++ connection that sent the signal message.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NAME_ADD</constant></term>
++ <term><constant>KDBUS_ITEM_NAME_REMOVE</constant></term>
++ <term><constant>KDBUS_ITEM_NAME_CHANGE</constant></term>
++ <listitem>
++ <para>
++ These items request delivery of kernel notifications that
++ describe a name acquisition, loss, or change. The details
++ are stored in the item's
++ <varname>kdbus_notify_name_change</varname> member.
++ All information specified must be matched in order to make
++ the message pass. Use
++ <constant>KDBUS_MATCH_ID_ANY</constant> to
++ match against any unique connection ID.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_ID_ADD</constant></term>
++ <term><constant>KDBUS_ITEM_ID_REMOVE</constant></term>
++ <listitem>
++ <para>
++ These items request delivery of kernel notifications that are
++ generated when a connection is created or terminated.
++ <type>struct kdbus_notify_id_change</type> is used to
++ store the actual match information. This item can be used to
++ monitor one particular connection ID, or, when the ID field
++ is set to <constant>KDBUS_MATCH_ID_ANY</constant>,
++ all of them.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_NEGOTIATE</constant></term>
++ <listitem><para>
++ With this item, programs can <emphasis>probe</emphasis> the
++ kernel for known item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Refer to
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on message types.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Removing a match</title>
++ <para>
++ Matches can be removed with the
++ <constant>KDBUS_CMD_MATCH_REMOVE</constant> ioctl, which takes
++ <type>struct kdbus_cmd_match</type> as argument, but its fields
++ usage slightly differs compared to that of
++ <constant>KDBUS_CMD_MATCH_ADD</constant>.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd_match {
++ __u64 size;
++ __u64 cookie;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>cookie</varname></term>
++ <listitem><para>
++ The cookie of the match, as it was passed when the match was added.
++ All matches that have this cookie will be removed.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ No flags are supported for this use case.
++ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
++ valid flags. If set, the ioctl will fail with
++ <errorcode>-1</errorcode>, <varname>errno</varname> is set to
++ <constant>EPROTO</constant>, and the <varname>flags</varname> field
++ is set to <constant>0</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ No items are supported for this use case, but
++ <constant>KDBUS_ITEM_NEGOTIATE</constant> is allowed nevertheless.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect1>
++
++ <refsect1>
++ <title>Return value</title>
++ <para>
++ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
++ on error, <errorcode>-1</errorcode> is returned, and
++ <varname>errno</varname> is set to indicate the error.
++ If the issued ioctl is illegal for the file descriptor used,
++ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
++ </para>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_MATCH_ADD</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Illegal flags or items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EDOM</constant></term>
++ <listitem><para>
++ Illegal bloom filter size.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EMFILE</constant></term>
++ <listitem><para>
++ Too many matches for this connection.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_MATCH_REMOVE</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Illegal flags.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EBADSLT</constant></term>
++ <listitem><para>
++ A match entry with the given cookie could not be found.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.message.xml b/Documentation/kdbus/kdbus.message.xml
+new file mode 100644
+index 0000000..0115d9d
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.message.xml
+@@ -0,0 +1,1276 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus.message">
++
++ <refentryinfo>
++ <title>kdbus.message</title>
++ <productname>kdbus.message</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.message</refname>
++ <refpurpose>kdbus message</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++
++ <para>
++ A kdbus message is used to exchange information between two connections
++ on a bus, or to transport notifications from the kernel to one or many
++ connections. This document describes the layout of messages, how payload
++ is added to them and how they are sent and received.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Message layout</title>
++
++ <para>The layout of a message is shown below.</para>
++
++ <programlisting>
++ +-------------------------------------------------------------------------+
++ | Message |
++ | +---------------------------------------------------------------------+ |
++ | | Header | |
++ | | size: overall message size, including the data records | |
++ | | destination: connection ID of the receiver | |
++ | | source: connection ID of the sender (set by kernel) | |
++ | | payload_type: "DBusDBus" textual identifier stored as uint64_t | |
++ | +---------------------------------------------------------------------+ |
++ | +---------------------------------------------------------------------+ |
++ | | Data Record | |
++ | | size: overall record size (without padding) | |
++ | | type: type of data | |
++ | | data: reference to data (address or file descriptor) | |
++ | +---------------------------------------------------------------------+ |
++ | +---------------------------------------------------------------------+ |
++ | | padding bytes to the next 8 byte alignment | |
++ | +---------------------------------------------------------------------+ |
++ | +---------------------------------------------------------------------+ |
++ | | Data Record | |
++ | | size: overall record size (without padding) | |
++ | | ... | |
++ | +---------------------------------------------------------------------+ |
++ | +---------------------------------------------------------------------+ |
++ | | padding bytes to the next 8 byte alignment | |
++ | +---------------------------------------------------------------------+ |
++ | +---------------------------------------------------------------------+ |
++ | | Data Record | |
++ | | size: overall record size | |
++ | | ... | |
++ | +---------------------------------------------------------------------+ |
++ | ... further data records ... |
++ +-------------------------------------------------------------------------+
++ </programlisting>
++ </refsect1>
++
++ <refsect1>
++ <title>Message payload</title>
++
++ <para>
++ When connecting to the bus, receivers request a memory pool of a given
++ size, large enough to carry all backlog of data enqueued for the
++ connection. The pool is internally backed by a shared memory file which
++ can be <function>mmap()</function>ed by the receiver. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information.
++ </para>
++
++ <para>
++ Message payload must be described in items attached to a message when
++ it is sent. A receiver can access the payload by looking at the items
++ that are attached to a message in its pool. The following items are used.
++ </para>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_PAYLOAD_VEC</constant></term>
++ <listitem>
++ <para>
++ This item references a piece of memory on the sender side which is
++ directly copied into the receiver's pool. This way, two peers can
++ exchange data by effectively doing a single-copy from one process
++ to another; the kernel will not buffer the data anywhere else.
++ This item is never found in a message received by a connection.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_PAYLOAD_OFF</constant></term>
++ <listitem>
++ <para>
++ This item is attached to messages on the receiving side and points
++ to a memory area inside the receiver's pool. The
++ <varname>offset</varname> variable in the item denotes the memory
++ location relative to the message itself.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant></term>
++ <listitem>
++ <para>
++ Messages can reference <emphasis>memfd</emphasis> files which
++ contain the data. memfd files are tmpfs-backed files that allow
++ sealing of the content of the file, which prevents all writable
++ access to the file content.
++ </para>
++ <para>
++ Only memfds that have
++ <constant>(F_SEAL_SHRINK|F_SEAL_GROW|F_SEAL_WRITE|F_SEAL_SEAL)
++ </constant>
++ set are accepted as payload data, which enforces reliable passing of
++ data. The receiver can assume that neither the sender nor anyone
++ else can alter the content after the message is sent. If those
++ seals are not set on the memfd, the ioctl will fail with
++ <errorcode>-1</errorcode>, and <varname>errno</varname> will be
++ set to <constant>ETXTBUSY</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_FDS</constant></term>
++ <listitem>
++ <para>
++ Messages can transport regular file descriptors via
++ <constant>KDBUS_ITEM_FDS</constant>. This item carries an array
++ of <type>int</type> values in <varname>item.fd</varname>. The
++ maximum number of file descriptors in the item is
++ <constant>253</constant>, and only one item of this type is
++ accepted per message. All passed values must be valid file
++ descriptors; the open count of each file descriptors is increased
++ by installing it to the receiver's task. This item can only be
++ used for directed messages, not for broadcasts, and only to
++ remote peers that have opted-in for receiving file descriptors
++ at connection time (<constant>KDBUS_HELLO_ACCEPT_FD</constant>).
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ The sender must not make any assumptions on the type in which data is
++ received by the remote peer. The kernel is free to re-pack multiple
++ <constant>KDBUS_ITEM_PAYLOAD_VEC</constant> and
++ <constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant> payloads. For instance, the
++ kernel may decide to merge multiple <constant>VECs</constant> into a
++ single <constant>VEC</constant>, inline <constant>MEMFD</constant>
++ payloads into memory, or merge all passed <constant>VECs</constant> into a
++ single <constant>MEMFD</constant>. However, the kernel preserves the order
++ of passed data. This means that the order of all <constant>VEC</constant>
++ and <constant>MEMFD</constant> items is not changed in respect to each
++ other. In other words: All passed <constant>VEC</constant> and
++ <constant>MEMFD</constant> data payloads are treated as a single stream
++ of data that may be received by the remote peer in a different set of
++ chunks than it was sent as.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Sending messages</title>
++
++ <para>
++ Messages are passed to the kernel with the
++ <constant>KDBUS_CMD_SEND</constant> ioctl. Depending on the destination
++ address of the message, the kernel delivers the message to the specific
++ destination connection, or to some subset of all connections on the same
++ bus. Sending messages across buses is not possible. Messages are always
++ queued in the memory pool of the destination connection (see above).
++ </para>
++
++ <para>
++ The <constant>KDBUS_CMD_SEND</constant> ioctl uses a
++ <type>struct kdbus_cmd_send</type> to describe the message
++ transfer.
++ </para>
++ <programlisting>
++struct kdbus_cmd_send {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 msg_address;
++ struct kdbus_msg_info reply;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>Flags for message delivery</para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_SEND_SYNC_REPLY</constant></term>
++ <listitem>
++ <para>
++ By default, all calls to kdbus are considered asynchronous,
++ non-blocking. However, as there are many use cases that need
++ to wait for a remote peer to answer a method call, there's a
++ way to send a message and wait for a reply in a synchronous
++ fashion. This is what the
++ <constant>KDBUS_SEND_SYNC_REPLY</constant> controls. The
++ <constant>KDBUS_CMD_SEND</constant> ioctl will block until the
++ reply has arrived, the timeout limit is reached, in case the
++ remote connection was shut down, or if interrupted by a signal
++ before any reply; see
++ <citerefentry>
++ <refentrytitle>signal</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++
++ The offset of the reply message in the sender's pool is stored
++ in <varname>reply</varname> when the ioctl has returned without
++ error. Hence, there is no need for another
++ <constant>KDBUS_CMD_RECV</constant> ioctl or anything else to
++ receive the reply.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Request a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will fail with
++ <errorcode>-1</errorcode>, <varname>errno</varname>
++ is set to <constant>EPROTO</constant>.
++ Once the ioctl returned, the <varname>flags</varname>
++ field will have all bits set that the kernel recognizes as
++ valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>msg_address</varname></term>
++ <listitem><para>
++ In this field, users have to provide a pointer to a message
++ (<type>struct kdbus_msg</type>) to send. See below for a
++ detailed description.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>reply</varname></term>
++ <listitem><para>
++ Only used for synchronous replies. See description of
++ <type>struct kdbus_cmd_recv</type> for more details.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ The following items are currently recognized.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_CANCEL_FD</constant></term>
++ <listitem>
++ <para>
++ When this optional item is passed in, and the call is
++ executed as SYNC call, the passed in file descriptor can be
++ used as alternative cancellation point. The kernel will call
++ <citerefentry>
++ <refentrytitle>poll</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ on this file descriptor, and once it reports any incoming
++ bytes, the blocking send operation will be canceled; the
++ blocking, synchronous ioctl call will return
++ <errorcode>-1</errorcode>, and <varname>errno</varname> will
++ be set to <errorname>ECANCELED</errorname>.
++ Any type of file descriptor on which
++ <citerefentry>
++ <refentrytitle>poll</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ can be called on can be used as payload to this item; for
++ example, an eventfd can be used for this purpose, see
++ <citerefentry>
++ <refentrytitle>eventfd</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>.
++ For asynchronous message sending, this item is allowed but
++ ignored.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ The message referenced by the <varname>msg_address</varname> above has
++ the following layout.
++ </para>
++
++ <programlisting>
++struct kdbus_msg {
++ __u64 size;
++ __u64 flags;
++ __s64 priority;
++ __u64 dst_id;
++ __u64 src_id;
++ __u64 payload_type;
++ __u64 cookie;
++ __u64 timeout_ns;
++ __u64 cookie_reply;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>Flags to describe message details.</para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_MSG_EXPECT_REPLY</constant></term>
++ <listitem>
++ <para>
++ Expect a reply to this message from the remote peer. With
++ this bit set, the timeout_ns field must be set to a non-zero
++ number of nanoseconds in which the receiving peer is expected
++ to reply. If such a reply is not received in time, the sender
++ will be notified with a timeout message (see below). The
++ value must be an absolute value, in nanoseconds and based on
++ <constant>CLOCK_MONOTONIC</constant>.
++ </para><para>
++ For a message to be accepted as reply, it must be a direct
++ message to the original sender (not a broadcast and not a
++ signal message), and its
++ <varname>kdbus_msg.cookie_reply</varname> must match the
++ previous message's <varname>kdbus_msg.cookie</varname>.
++ </para><para>
++ Expected replies also temporarily open the policy of the
++ sending connection, so the other peer is allowed to respond
++ within the given time window.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_MSG_NO_AUTO_START</constant></term>
++ <listitem>
++ <para>
++ By default, when a message is sent to an activator
++ connection, the activator is notified and will start an
++ implementer. This flag inhibits that behavior. With this bit
++ set, and the remote being an activator, the ioctl will fail
++ with <varname>errno</varname> set to
++ <constant>EADDRNOTAVAIL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Requests a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will return
++ <errorcode>0</errorcode>, and the <varname>flags</varname>
++ field will have all bits set that are valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>priority</varname></term>
++ <listitem><para>
++ The priority of this message. Receiving messages (see below) may
++ optionally be constrained to messages of a minimal priority. This
++ allows for use cases where timing critical data is interleaved with
++ control data on the same connection. If unused, the priority field
++ should be set to <constant>0</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>dst_id</varname></term>
++ <listitem><para>
++ The numeric ID of the destination connection, or
++ <constant>KDBUS_DST_ID_BROADCAST</constant>
++ (~0ULL) to address every peer on the bus, or
++ <constant>KDBUS_DST_ID_NAME</constant> (0) to look
++ it up dynamically from the bus' name registry.
++ In the latter case, an item of type
++ <constant>KDBUS_ITEM_DST_NAME</constant> is mandatory.
++ Also see
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ .
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>src_id</varname></term>
++ <listitem><para>
++ Upon return of the ioctl, this member will contain the sending
++ connection's numerical ID. Should be 0 at send time.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>payload_type</varname></term>
++ <listitem><para>
++ Type of the payload in the actual data records. Currently, only
++ <constant>KDBUS_PAYLOAD_DBUS</constant> is accepted as input value
++ of this field. When receiving messages that are generated by the
++ kernel (notifications), this field will contain
++ <constant>KDBUS_PAYLOAD_KERNEL</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>cookie</varname></term>
++ <listitem><para>
++ Cookie of this message, for later recognition. Also, when replying
++ to a message (see above), the <varname>cookie_reply</varname>
++ field must match this value.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>timeout_ns</varname></term>
++ <listitem><para>
++ If the message sent requires a reply from the remote peer (see above),
++ this field contains the timeout in absolute nanoseconds based on
++ <constant>CLOCK_MONOTONIC</constant>. Also see
++ <citerefentry>
++ <refentrytitle>clock_gettime</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>cookie_reply</varname></term>
++ <listitem><para>
++ If the message sent is a reply to another message, this field must
++ match the cookie of the formerly received message.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ A dynamically sized list of items to contain additional information.
++ The following items are expected/valid:
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_PAYLOAD_VEC</constant></term>
++ <term><constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant></term>
++ <term><constant>KDBUS_ITEM_FDS</constant></term>
++ <listitem>
++ <para>
++ Actual data records containing the payload. See section
++ "Message payload".
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_BLOOM_FILTER</constant></term>
++ <listitem>
++ <para>
++ Bloom filter for matches (see below).
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ITEM_DST_NAME</constant></term>
++ <listitem>
++ <para>
++ Well-known name to send this message to. Required if
++ <varname>dst_id</varname> is set to
++ <constant>KDBUS_DST_ID_NAME</constant>.
++ If a connection holding the given name can't be found,
++ the ioctl will fail with <varname>errno</varname> set to
++ <constant>ESRCH</constant> is returned.
++ </para>
++ <para>
++ For messages to a unique name (ID), this item is optional. If
++ present, the kernel will make sure the name owner matches the
++ given unique name. This allows programs to tie the message
++ sending to the condition that a name is currently owned by a
++ certain unique name.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ The message will be augmented by the requested metadata items when
++ queued into the receiver's pool. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ and
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on metadata.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Receiving messages</title>
++
++ <para>
++ Messages are received by the client with the
++ <constant>KDBUS_CMD_RECV</constant> ioctl. The endpoint file of the bus
++ supports <function>poll()/epoll()/select()</function>; when new messages
++ are available on the connection's file descriptor,
++ <constant>POLLIN</constant> is reported. For compatibility reasons,
++ <constant>POLLOUT</constant> is always reported as well. Note, however,
++ that the latter does not guarantee that a message can in fact be sent, as
++ this depends on how many pending messages the receiver has in its pool.
++ </para>
++
++ <para>
++ With the <constant>KDBUS_CMD_RECV</constant> ioctl, a
++ <type>struct kdbus_cmd_recv</type> is used.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd_recv {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __s64 priority;
++ __u64 dropped_msgs;
++ struct kdbus_msg_info msg;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>Flags to control the receive command.</para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_RECV_PEEK</constant></term>
++ <listitem>
++ <para>
++ Just return the location of the next message. Do not install
++ file descriptors or anything else. This is usually used to
++ determine the sender of the next queued message.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_RECV_DROP</constant></term>
++ <listitem>
++ <para>
++ Drop the next message without doing anything else with it,
++ and free the pool slice. This a short-cut for
++ <constant>KDBUS_RECV_PEEK</constant> and
++ <constant>KDBUS_CMD_FREE</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_RECV_USE_PRIORITY</constant></term>
++ <listitem>
++ <para>
++ Dequeue the messages ordered by their priority, and filtering
++ them with the priority field (see below).
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Request a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will fail with
++ <errorcode>-1</errorcode>, <varname>errno</varname>
++ is set to <constant>EPROTO</constant>.
++ Once the ioctl returned, the <varname>flags</varname>
++ field will have all bits set that the kernel recognizes as
++ valid for this command.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. If the <varname>dropped_msgs</varname>
++ field is non-zero, <constant>KDBUS_RECV_RETURN_DROPPED_MSGS</constant>
++ is set. If a file descriptor could not be installed, the
++ <constant>KDBUS_RECV_RETURN_INCOMPLETE_FDS</constant> flag is set.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>priority</varname></term>
++ <listitem><para>
++ With <constant>KDBUS_RECV_USE_PRIORITY</constant> set in
++ <varname>flags</varname>, messages will be dequeued ordered by their
++ priority, starting with the highest value. Also, messages will be
++ filtered by the value given in this field, so the returned message
++ will at least have the requested priority. If no such message is
++ waiting in the queue, the ioctl will fail, and
++ <varname>errno</varname> will be set to <constant>EAGAIN</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>dropped_msgs</varname></term>
++ <listitem><para>
++ Whenever a message with <constant>KDBUS_MSG_SIGNAL</constant> is sent
++ but cannot be queued on a peer (e.g., as it contains FDs but the peer
++ does not support FDs, or there is no space left in the peer's pool)
++ the 'dropped_msgs' counter of the peer is incremented. On the next
++ RECV ioctl, the 'dropped_msgs' field is copied into the ioctl struct
++ and cleared on the peer. If it was non-zero, the
++ <constant>KDBUS_RECV_RETURN_DROPPED_MSGS</constant> flag will be set
++ in <varname>return_flags</varname>. Note that this will only happen
++ if the ioctl succeeded or failed with <constant>EAGAIN</constant>. In
++ other error cases, the 'dropped_msgs' field of the peer is left
++ untouched.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>msg</varname></term>
++ <listitem><para>
++ Embedded struct containing information on the received message when
++ this command succeeded (see below).
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem><para>
++ Items to specify further details for the receive command.
++ Currently unused, and all items will be rejected with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Both <type>struct kdbus_cmd_recv</type> and
++ <type>struct kdbus_cmd_send</type> embed
++ <type>struct kdbus_msg_info</type>.
++ For the <constant>KDBUS_CMD_SEND</constant> ioctl, it is used to catch
++ synchronous replies, if one was requested, and is unused otherwise.
++ </para>
++
++ <programlisting>
++struct kdbus_msg_info {
++ __u64 offset;
++ __u64 msg_size;
++ __u64 return_flags;
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>offset</varname></term>
++ <listitem><para>
++ Upon return of the ioctl, this field contains the offset in the
++ receiver's memory pool. The memory must be freed with
++ <constant>KDBUS_CMD_FREE</constant>. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further details.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>msg_size</varname></term>
++ <listitem><para>
++ Upon successful return of the ioctl, this field contains the size of
++ the allocated slice at offset <varname>offset</varname>.
++ It is the combination of the size of the stored
++ <type>struct kdbus_msg</type> object plus all appended VECs.
++ You can use it in combination with <varname>offset</varname> to map
++ a single message, instead of mapping the entire pool. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for further details.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem>
++ <para>
++ Kernel-provided return flags. Currently, the following flags are
++ defined.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_RECV_RETURN_INCOMPLETE_FDS</constant></term>
++ <listitem>
++ <para>
++ The message contained memfds or file descriptors, and the
++ kernel failed to install one or more of them at receive time.
++ Most probably that happened because the maximum number of
++ file descriptors for the receiver's task were exceeded.
++ In such cases, the message is still delivered, so this is not
++ a fatal condition. File descriptors numbers inside the
++ <constant>KDBUS_ITEM_FDS</constant> item or memfd files
++ referenced by <constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant>
++ items which could not be installed will be set to
++ <constant>-1</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Unless <constant>KDBUS_RECV_DROP</constant> was passed, the
++ <varname>offset</varname> field contains the location of the new message
++ inside the receiver's pool after the <constant>KDBUS_CMD_RECV</constant>
++ ioctl was employed. The message is stored as <type>struct kdbus_msg</type>
++ at this offset, and can be interpreted with the semantics described above.
++ </para>
++ <para>
++ Also, if the connection allowed for file descriptor to be passed
++ (<constant>KDBUS_HELLO_ACCEPT_FD</constant>), and if the message contained
++ any, they will be installed into the receiving process when the
++ <constant>KDBUS_CMD_RECV</constant> ioctl is called.
++ <emphasis>memfds</emphasis> may always be part of the message payload.
++ The receiving task is obliged to close all file descriptors appropriately
++ once no longer needed. If <constant>KDBUS_RECV_PEEK</constant> is set, no
++ file descriptors are installed. This allows for peeking at a message,
++ looking at its metadata only and dropping it via
++ <constant>KDBUS_RECV_DROP</constant>, without installing any of the file
++ descriptors into the receiving process.
++ </para>
++ <para>
++ The caller is obliged to call the <constant>KDBUS_CMD_FREE</constant>
++ ioctl with the returned offset when the memory is no longer needed.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Notifications</title>
++ <para>
++ A kernel notification is a regular kdbus message with the following
++ details.
++ </para>
++
++ <itemizedlist>
++ <listitem><para>
++ kdbus_msg.src_id == <constant>KDBUS_SRC_ID_KERNEL</constant>
++ </para></listitem>
++ <listitem><para>
++ kdbus_msg.dst_id == <constant>KDBUS_DST_ID_BROADCAST</constant>
++ </para></listitem>
++ <listitem><para>
++ kdbus_msg.payload_type == <constant>KDBUS_PAYLOAD_KERNEL</constant>
++ </para></listitem>
++ <listitem><para>
++ Has exactly one of the items attached that are described below.
++ </para></listitem>
++ <listitem><para>
++ Always has a timestamp item (<constant>KDBUS_ITEM_TIMESTAMP</constant>)
++ attached.
++ </para></listitem>
++ </itemizedlist>
++
++ <para>
++ The kernel will notify its users of the following events.
++ </para>
++
++ <itemizedlist>
++ <listitem><para>
++ When connection <emphasis>A</emphasis> is terminated while connection
++ <emphasis>B</emphasis> is waiting for a reply from it, connection
++ <emphasis>B</emphasis> is notified with a message with an item of
++ type <constant>KDBUS_ITEM_REPLY_DEAD</constant>.
++ </para></listitem>
++
++ <listitem><para>
++ When connection <emphasis>A</emphasis> does not receive a reply from
++ connection <emphasis>B</emphasis> within the specified timeout window,
++ connection <emphasis>A</emphasis> will receive a message with an
++ item of type <constant>KDBUS_ITEM_REPLY_TIMEOUT</constant>.
++ </para></listitem>
++
++ <listitem><para>
++ When an ordinary connection (not a monitor) is created on or removed
++ from a bus, messages with an item of type
++ <constant>KDBUS_ITEM_ID_ADD</constant> or
++ <constant>KDBUS_ITEM_ID_REMOVE</constant>, respectively, are delivered
++ to all bus members that match these messages through their match
++ database. Eavesdroppers (monitor connections) do not cause such
++ notifications to be sent. They are invisible on the bus.
++ </para></listitem>
++
++ <listitem><para>
++ When a connection gains or loses ownership of a name, messages with an
++ item of type <constant>KDBUS_ITEM_NAME_ADD</constant>,
++ <constant>KDBUS_ITEM_NAME_REMOVE</constant> or
++ <constant>KDBUS_ITEM_NAME_CHANGE</constant> are delivered to all bus
++ members that match these messages through their match database.
++ </para></listitem>
++ </itemizedlist>
++ </refsect1>
++
++ <refsect1>
++ <title>Return value</title>
++ <para>
++ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
++ on error, <errorcode>-1</errorcode> is returned, and
++ <varname>errno</varname> is set to indicate the error.
++ If the issued ioctl is illegal for the file descriptor used,
++ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
++ </para>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_SEND</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EOPNOTSUPP</constant></term>
++ <listitem><para>
++ The connection is not an ordinary connection, or the passed
++ file descriptors in <constant>KDBUS_ITEM_FDS</constant> item are
++ either kdbus handles or unix domain sockets. Both are currently
++ unsupported.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ The submitted payload type is
++ <constant>KDBUS_PAYLOAD_KERNEL</constant>,
++ <constant>KDBUS_MSG_EXPECT_REPLY</constant> was set without timeout
++ or cookie values, <constant>KDBUS_SEND_SYNC_REPLY</constant> was
++ set without <constant>KDBUS_MSG_EXPECT_REPLY</constant>, an invalid
++ item was supplied, <constant>src_id</constant> was non-zero and was
++ different from the current connection's ID, a supplied memfd had a
++ size of 0, or a string was not properly null-terminated.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ENOTUNIQ</constant></term>
++ <listitem><para>
++ The supplied destination is
++ <constant>KDBUS_DST_ID_BROADCAST</constant> and either
++ file descriptors were passed, or
++ <constant>KDBUS_MSG_EXPECT_REPLY</constant> was set,
++ or a timeout was given.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>E2BIG</constant></term>
++ <listitem><para>
++ Too many items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EMSGSIZE</constant></term>
++ <listitem><para>
++ The size of the message header and items or the payload vector
++ is excessive.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EEXIST</constant></term>
++ <listitem><para>
++ Multiple <constant>KDBUS_ITEM_FDS</constant>,
++ <constant>KDBUS_ITEM_BLOOM_FILTER</constant> or
++ <constant>KDBUS_ITEM_DST_NAME</constant> items were supplied.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EBADF</constant></term>
++ <listitem><para>
++ The supplied <constant>KDBUS_ITEM_FDS</constant> or
++ <constant>KDBUS_ITEM_PAYLOAD_MEMFD</constant> items
++ contained an illegal file descriptor.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EMEDIUMTYPE</constant></term>
++ <listitem><para>
++ The supplied memfd is not a sealed kdbus memfd.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EMFILE</constant></term>
++ <listitem><para>
++ Too many file descriptors inside a
++ <constant>KDBUS_ITEM_FDS</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EBADMSG</constant></term>
++ <listitem><para>
++ An item had illegal size, both a <constant>dst_id</constant> and a
++ <constant>KDBUS_ITEM_DST_NAME</constant> was given, or both a name
++ and a bloom filter was given.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ETXTBSY</constant></term>
++ <listitem><para>
++ The supplied kdbus memfd file cannot be sealed or the seal
++ was removed, because it is shared with other processes or
++ still mapped with
++ <citerefentry>
++ <refentrytitle>mmap</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ECOMM</constant></term>
++ <listitem><para>
++ A peer does not accept the file descriptors addressed to it.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EFAULT</constant></term>
++ <listitem><para>
++ The supplied bloom filter size was not 64-bit aligned, or supplied
++ memory could not be accessed by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EDOM</constant></term>
++ <listitem><para>
++ The supplied bloom filter size did not match the bloom filter
++ size of the bus.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EDESTADDRREQ</constant></term>
++ <listitem><para>
++ <constant>dst_id</constant> was set to
++ <constant>KDBUS_DST_ID_NAME</constant>, but no
++ <constant>KDBUS_ITEM_DST_NAME</constant> was attached.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ESRCH</constant></term>
++ <listitem><para>
++ The name to look up was not found in the name registry.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EADDRNOTAVAIL</constant></term>
++ <listitem><para>
++ <constant>KDBUS_MSG_NO_AUTO_START</constant> was given but the
++ destination connection is an activator.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ENXIO</constant></term>
++ <listitem><para>
++ The passed numeric destination connection ID couldn't be found,
++ or is not connected.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ECONNRESET</constant></term>
++ <listitem><para>
++ The destination connection is no longer active.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ETIMEDOUT</constant></term>
++ <listitem><para>
++ Timeout while synchronously waiting for a reply.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINTR</constant></term>
++ <listitem><para>
++ Interrupted system call while synchronously waiting for a reply.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EPIPE</constant></term>
++ <listitem><para>
++ When sending a message, a synchronous reply from the receiving
++ connection was expected but the connection died before answering.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ENOBUFS</constant></term>
++ <listitem><para>
++ Too many pending messages on the receiver side.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EREMCHG</constant></term>
++ <listitem><para>
++ Both a well-known name and a unique name (ID) was given, but
++ the name is not currently owned by that connection.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EXFULL</constant></term>
++ <listitem><para>
++ The memory pool of the receiver is full.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EREMOTEIO</constant></term>
++ <listitem><para>
++ While synchronously waiting for a reply, the remote peer
++ failed with an I/O error.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_RECV</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EOPNOTSUPP</constant></term>
++ <listitem><para>
++ The connection is not an ordinary connection, or the passed
++ file descriptors are either kdbus handles or unix domain
++ sockets. Both are currently unsupported.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Invalid flags or offset.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EAGAIN</constant></term>
++ <listitem><para>
++ No message found in the queue.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>clock_gettime</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>ioctl</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>poll</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>select</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>epoll</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>eventfd</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>memfd_create</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.name.xml b/Documentation/kdbus/kdbus.name.xml
+new file mode 100644
+index 0000000..3f5f6a6
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.name.xml
+@@ -0,0 +1,711 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus.name">
++
++ <refentryinfo>
++ <title>kdbus.name</title>
++ <productname>kdbus.name</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.name</refname>
++ <refpurpose>kdbus.name</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++ <para>
++ Each
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ instantiates a name registry to resolve well-known names into unique
++ connection IDs for message delivery. The registry will be queried when a
++ message is sent with <varname>kdbus_msg.dst_id</varname> set to
++ <constant>KDBUS_DST_ID_NAME</constant>, or when a registry dump is
++ requested with <constant>KDBUS_CMD_NAME_LIST</constant>.
++ </para>
++
++ <para>
++ All of the below is subject to policy rules for <emphasis>SEE</emphasis>
++ and <emphasis>OWN</emphasis> permissions. See
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Name validity</title>
++ <para>
++ A name has to comply with the following rules in order to be considered
++ valid.
++ </para>
++
++ <itemizedlist>
++ <listitem>
++ <para>
++ The name has two or more elements separated by a
++ '<literal>.</literal>' (period) character.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ All elements must contain at least one character.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ Each element must only contain the ASCII characters
++ <literal>[A-Z][a-z][0-9]_</literal> and must not begin with a
++ digit.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ The name must contain at least one '<literal>.</literal>' (period)
++ character (and thus at least two elements).
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ The name must not begin with a '<literal>.</literal>' (period)
++ character.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ The name must not exceed <constant>255</constant> characters in
++ length.
++ </para>
++ </listitem>
++ </itemizedlist>
++ </refsect1>
++
++ <refsect1>
++ <title>Acquiring a name</title>
++ <para>
++ To acquire a name, a client uses the
++ <constant>KDBUS_CMD_NAME_ACQUIRE</constant> ioctl with
++ <type>struct kdbus_cmd</type> as argument.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>Flags to control details in the name acquisition.</para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_NAME_REPLACE_EXISTING</constant></term>
++ <listitem>
++ <para>
++ Acquiring a name that is already present usually fails,
++ unless this flag is set in the call, and
++ <constant>KDBUS_NAME_ALLOW_REPLACEMENT</constant> (see below)
++ was set when the current owner of the name acquired it, or
++ if the current owner is an activator connection (see
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>).
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_NAME_ALLOW_REPLACEMENT</constant></term>
++ <listitem>
++ <para>
++ Allow other connections to take over this name. When this
++ happens, the former owner of the connection will be notified
++ of the name loss.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_NAME_QUEUE</constant></term>
++ <listitem>
++ <para>
++ A name that is already acquired by a connection can not be
++ acquired again (unless the
++ <constant>KDBUS_NAME_ALLOW_REPLACEMENT</constant> flag was
++ set during acquisition; see above).
++ However, a connection can put itself in a queue of
++ connections waiting for the name to be released. Once that
++ happens, the first connection in that queue becomes the new
++ owner and is notified accordingly.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Request a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will fail with
++ <errorcode>-1</errorcode>, and <varname>errno</varname>
++ is set to <constant>EPROTO</constant>.
++ Once the ioctl returned, the <varname>flags</varname>
++ field will have all bits set that the kernel recognizes as
++ valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem>
++ <para>
++ Flags returned by the kernel. Currently, the following may be
++ returned by the kernel.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_NAME_IN_QUEUE</constant></term>
++ <listitem>
++ <para>
++ The name was not acquired yet, but the connection was
++ placed in the queue of peers waiting for the name.
++ This can only happen if <constant>KDBUS_NAME_QUEUE</constant>
++ was set in the <varname>flags</varname> member (see above).
++ The connection will receive a name owner change notification
++ once the current owner has given up the name and its
++ ownership was transferred.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ Items to submit the name. Currently, one item of type
++ <constant>KDBUS_ITEM_NAME</constant> is expected and allowed, and
++ the contained string must be a valid bus name.
++ <constant>KDBUS_ITEM_NEGOTIATE</constant> may be used to probe for
++ valid item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for a detailed description of how this item is used.
++ </para>
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <errorname>>EINVAL</errorname>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect1>
++
++ <refsect1>
++ <title>Releasing a name</title>
++ <para>
++ A connection may release a name explicitly with the
++ <constant>KDBUS_CMD_NAME_RELEASE</constant> ioctl. If the connection was
++ an implementer of an activatable name, its pending messages are moved
++ back to the activator. If there are any connections queued up as waiters
++ for the name, the first one in the queue (the oldest entry) will become
++ the new owner. The same happens implicitly for all names once a
++ connection terminates. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on connections.
++ </para>
++ <para>
++ The <constant>KDBUS_CMD_NAME_RELEASE</constant> ioctl uses the same data
++ structure as the acquisition call
++ (<constant>KDBUS_CMD_NAME_ACQUIRE</constant>),
++ but with slightly different field usage.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ Flags to the command. Currently unused.
++ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
++ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
++ and the <varname>flags</varname> field is set to
++ <constant>0</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ Items to submit the name. Currently, one item of type
++ <constant>KDBUS_ITEM_NAME</constant> is expected and allowed, and
++ the contained string must be a valid bus name.
++ <constant>KDBUS_ITEM_NEGOTIATE</constant> may be used to probe for
++ valid item types. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for a detailed description of how this item is used.
++ </para>
++ <para>
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect1>
++
++ <refsect1>
++ <title>Dumping the name registry</title>
++ <para>
++ A connection may request a complete or filtered dump of currently active
++ bus names with the <constant>KDBUS_CMD_LIST</constant> ioctl, which
++ takes a <type>struct kdbus_cmd_list</type> as argument.
++ </para>
++
++ <programlisting>
++struct kdbus_cmd_list {
++ __u64 flags;
++ __u64 return_flags;
++ __u64 offset;
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem>
++ <para>
++ Any combination of flags to specify which names should be dumped.
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_LIST_UNIQUE</constant></term>
++ <listitem>
++ <para>
++ List the unique (numeric) IDs of the connection, whether it
++ owns a name or not.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_LIST_NAMES</constant></term>
++ <listitem>
++ <para>
++ List well-known names stored in the database which are
++ actively owned by a real connection (not an activator).
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_LIST_ACTIVATORS</constant></term>
++ <listitem>
++ <para>
++ List names that are owned by an activator.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_LIST_QUEUED</constant></term>
++ <listitem>
++ <para>
++ List connections that are not yet owning a name but are
++ waiting for it to become available.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Request a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will fail with
++ <errorcode>-1</errorcode>, and <varname>errno</varname>
++ is set to <constant>EPROTO</constant>.
++ Once the ioctl returned, the <varname>flags</varname>
++ field will have all bits set that the kernel recognizes as
++ valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>offset</varname></term>
++ <listitem><para>
++ When the ioctl returns successfully, the offset to the name registry
++ dump inside the connection's pool will be stored in this field.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ The returned list of names is stored in a <type>struct kdbus_list</type>
++ that in turn contains an array of type <type>struct kdbus_info</type>,
++ The array-size in bytes is given as <varname>list_size</varname>.
++ The fields inside <type>struct kdbus_info</type> is described next.
++ </para>
++
++ <programlisting>
++struct kdbus_info {
++ __u64 size;
++ __u64 id;
++ __u64 flags;
++ struct kdbus_item items[0];
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>id</varname></term>
++ <listitem><para>
++ The owning connection's unique ID.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ The flags of the owning connection.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem>
++ <para>
++ Items containing the actual name. Currently, one item of type
++ <constant>KDBUS_ITEM_OWNED_NAME</constant> will be attached,
++ including the name's flags. In that item, the flags field of the
++ name may carry the following bits:
++ </para>
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_NAME_ALLOW_REPLACEMENT</constant></term>
++ <listitem>
++ <para>
++ Other connections are allowed to take over this name from the
++ connection that owns it.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_NAME_IN_QUEUE</constant></term>
++ <listitem>
++ <para>
++ When retrieving a list of currently acquired names in the
++ registry, this flag indicates whether the connection
++ actually owns the name or is currently waiting for it to
++ become available.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_NAME_ACTIVATOR</constant></term>
++ <listitem>
++ <para>
++ An activator connection owns a name as a placeholder for an
++ implementer, which is started on demand by programs as soon
++ as the first message arrives. There's some more information
++ on this topic in
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ .
++ </para>
++ <para>
++ In contrast to
++ <constant>KDBUS_NAME_REPLACE_EXISTING</constant>,
++ when a name is taken over from an activator connection, all
++ the messages that have been queued in the activator
++ connection will be moved over to the new owner. The activator
++ connection will still be tracked for the name and will take
++ control again if the implementer connection terminates.
++ </para>
++ <para>
++ This flag can not be used when acquiring a name, but is
++ implicitly set through <constant>KDBUS_CMD_HELLO</constant>
++ with <constant>KDBUS_HELLO_ACTIVATOR</constant> set in
++ <varname>kdbus_cmd_hello.conn_flags</varname>.
++ </para>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_FLAG_NEGOTIATE</constant></term>
++ <listitem>
++ <para>
++ Requests a set of valid flags for this ioctl. When this bit is
++ set, no action is taken; the ioctl will return
++ <errorcode>0</errorcode>, and the <varname>flags</varname>
++ field will have all bits set that are valid for this command.
++ The <constant>KDBUS_FLAG_NEGOTIATE</constant> bit will be
++ cleared by the operation.
++ </para>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ The returned buffer must be freed with the
++ <constant>KDBUS_CMD_FREE</constant> ioctl when the user is finished with
++ it. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Return value</title>
++ <para>
++ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
++ on error, <errorcode>-1</errorcode> is returned, and
++ <varname>errno</varname> is set to indicate the error.
++ If the issued ioctl is illegal for the file descriptor used,
++ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
++ </para>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_NAME_ACQUIRE</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Illegal command flags, illegal name provided, or an activator
++ tried to acquire a second name.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EPERM</constant></term>
++ <listitem><para>
++ Policy prohibited name ownership.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EALREADY</constant></term>
++ <listitem><para>
++ Connection already owns that name.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EEXIST</constant></term>
++ <listitem><para>
++ The name already exists and can not be taken over.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>E2BIG</constant></term>
++ <listitem><para>
++ The maximum number of well-known names per connection is exhausted.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_NAME_RELEASE</constant>
++ may fail with the following errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Invalid command flags, or invalid name provided.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ESRCH</constant></term>
++ <listitem><para>
++ Name is not found in the registry.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EADDRINUSE</constant></term>
++ <listitem><para>
++ Name is owned by a different connection and can't be released.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_LIST</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Invalid command flags
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>ENOBUFS</constant></term>
++ <listitem><para>
++ No available memory in the connection's pool.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.policy.xml b/Documentation/kdbus/kdbus.policy.xml
+new file mode 100644
+index 0000000..6732416
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.policy.xml
+@@ -0,0 +1,406 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus.policy">
++
++ <refentryinfo>
++ <title>kdbus.policy</title>
++ <productname>kdbus.policy</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.policy</refname>
++ <refpurpose>kdbus policy</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++
++ <para>
++ A kdbus policy restricts the possibilities of connections to own, see and
++ talk to well-known names. A policy can be associated with a bus (through a
++ policy holder connection) or a custom endpoint. kdbus stores its policy
++ information in a database that can be accessed through the following
++ ioctl commands:
++ </para>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_CMD_HELLO</constant></term>
++ <listitem><para>
++ When creating, or updating, a policy holder connection. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_CMD_ENDPOINT_MAKE</constant></term>
++ <term><constant>KDBUS_CMD_ENDPOINT_UPDATE</constant></term>
++ <listitem><para>
++ When creating, or updating, a bus custom endpoint. See
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ In all cases, the name and policy access information is stored in items
++ of type <constant>KDBUS_ITEM_NAME</constant> and
++ <constant>KDBUS_ITEM_POLICY_ACCESS</constant>. For this transport, the
++ following rules apply.
++ </para>
++
++ <itemizedlist>
++ <listitem>
++ <para>
++ An item of type <constant>KDBUS_ITEM_NAME</constant> must be followed
++ by at least one <constant>KDBUS_ITEM_POLICY_ACCESS</constant> item.
++ </para>
++ </listitem>
++
++ <listitem>
++ <para>
++ An item of type <constant>KDBUS_ITEM_NAME</constant> can be followed
++ by an arbitrary number of
++ <constant>KDBUS_ITEM_POLICY_ACCESS</constant> items.
++ </para>
++ </listitem>
++
++ <listitem>
++ <para>
++ An arbitrary number of groups of names and access levels can be given.
++ </para>
++ </listitem>
++ </itemizedlist>
++
++ <para>
++ Names passed in items of type <constant>KDBUS_ITEM_NAME</constant> must
++ comply to the rules of valid kdbus.name. See
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information.
++
++ The payload of an item of type
++ <constant>KDBUS_ITEM_POLICY_ACCESS</constant> is defined by the following
++ struct. For more information on the layout of items, please refer to
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para>
++
++ <programlisting>
++struct kdbus_policy_access {
++ __u64 type;
++ __u64 access;
++ __u64 id;
++};
++ </programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>type</varname></term>
++ <listitem>
++ <para>
++ One of the following.
++ </para>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_POLICY_ACCESS_USER</constant></term>
++ <listitem><para>
++ Grant access to a user with the UID stored in the
++ <varname>id</varname> field.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_POLICY_ACCESS_GROUP</constant></term>
++ <listitem><para>
++ Grant access to a user with the GID stored in the
++ <varname>id</varname> field.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_POLICY_ACCESS_WORLD</constant></term>
++ <listitem><para>
++ Grant access to everyone. The <varname>id</varname> field
++ is ignored.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>access</varname></term>
++ <listitem>
++ <para>
++ The access to grant. One of the following.
++ </para>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_POLICY_SEE</constant></term>
++ <listitem><para>
++ Allow the name to be seen.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_POLICY_TALK</constant></term>
++ <listitem><para>
++ Allow the name to be talked to.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_POLICY_OWN</constant></term>
++ <listitem><para>
++ Allow the name to be owned.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>id</varname></term>
++ <listitem><para>
++ For <constant>KDBUS_POLICY_ACCESS_USER</constant>, stores the UID.
++ For <constant>KDBUS_POLICY_ACCESS_GROUP</constant>, stores the GID.
++ </para></listitem>
++ </varlistentry>
++
++ </variablelist>
++
++ <para>
++ All endpoints of buses have an empty policy database by default.
++ Therefore, unless policy rules are added, all operations will also be
++ denied by default. Also see
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Wildcard names</title>
++ <para>
++ Policy holder connections may upload names that contain the wildcard
++ suffix (<literal>".*"</literal>). Such a policy entry is effective for
++ every well-known name that extends the provided name by exactly one more
++ level.
++
++ For example, the name <literal>foo.bar.*</literal> matches both
++ <literal>"foo.bar.baz"</literal> and
++ <literal>"foo.bar.bazbaz"</literal> are, but not
++ <literal>"foo.bar.baz.baz"</literal>.
++
++ This allows connections to take control over multiple names that the
++ policy holder doesn't need to know about when uploading the policy.
++
++ Such wildcard entries are not allowed for custom endpoints.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Privileged connections</title>
++ <para>
++ The policy database is overruled when action is taken by a privileged
++ connection. Please refer to
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information on what makes a connection privileged.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Examples</title>
++ <para>
++ For instance, a set of policy rules may look like this:
++ </para>
++
++ <programlisting>
++KDBUS_ITEM_NAME: str='org.foo.bar'
++KDBUS_ITEM_POLICY_ACCESS: type=USER, access=OWN, ID=1000
++KDBUS_ITEM_POLICY_ACCESS: type=USER, access=TALK, ID=1001
++KDBUS_ITEM_POLICY_ACCESS: type=WORLD, access=SEE
++
++KDBUS_ITEM_NAME: str='org.blah.baz'
++KDBUS_ITEM_POLICY_ACCESS: type=USER, access=OWN, ID=0
++KDBUS_ITEM_POLICY_ACCESS: type=WORLD, access=TALK
++ </programlisting>
++
++ <para>
++ That means that 'org.foo.bar' may only be owned by UID 1000, but every
++ user on the bus is allowed to see the name. However, only UID 1001 may
++ actually send a message to the connection and receive a reply from it.
++
++ The second rule allows 'org.blah.baz' to be owned by UID 0 only, but
++ every user may talk to it.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>TALK access and multiple well-known names per connection</title>
++ <para>
++ Note that TALK access is checked against all names of a connection. For
++ example, if a connection owns both <constant>'org.foo.bar'</constant> and
++ <constant>'org.blah.baz'</constant>, and the policy database allows
++ <constant>'org.blah.baz'</constant> to be talked to by WORLD, then this
++ permission is also granted to <constant>'org.foo.bar'</constant>. That
++ might sound illogical, but after all, we allow messages to be directed to
++ either the ID or a well-known name, and policy is applied to the
++ connection, not the name. In other words, the effective TALK policy for a
++ connection is the most permissive of all names the connection owns.
++
++ For broadcast messages, the receiver needs TALK permissions to the sender
++ to receive the broadcast.
++ </para>
++ <para>
++ Both the endpoint and the bus policy databases are consulted to allow
++ name registry listing, owning a well-known name and message delivery.
++ If either one fails, the operation is failed with
++ <varname>errno</varname> set to <constant>EPERM</constant>.
++
++ For best practices, connections that own names with a restricted TALK
++ access should not install matches. This avoids cases where the sent
++ message may pass the bloom filter due to false-positives and may also
++ satisfy the policy rules.
++
++ Also see
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Implicit policies</title>
++ <para>
++ Depending on the type of the endpoint, a set of implicit rules that
++ override installed policies might be enforced.
++
++ On default endpoints, the following set is enforced and checked before
++ any user-supplied policy is checked.
++ </para>
++
++ <itemizedlist>
++ <listitem>
++ <para>
++ Privileged connections always override any installed policy. Those
++ connections could easily install their own policies, so there is no
++ reason to enforce installed policies.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ Connections can always talk to connections of the same user. This
++ includes broadcast messages.
++ </para>
++ </listitem>
++ </itemizedlist>
++
++ <para>
++ Custom endpoints have stricter policies. The following rules apply:
++ </para>
++
++ <itemizedlist>
++ <listitem>
++ <para>
++ Policy rules are always enforced, even if the connection is a
++ privileged connection.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ Policy rules are always enforced for <constant>TALK</constant> access,
++ even if both ends are running under the same user. This includes
++ broadcast messages.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ To restrict the set of names that can be seen, endpoint policies can
++ install <constant>SEE</constant> policies.
++ </para>
++ </listitem>
++ </itemizedlist>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.pool.xml b/Documentation/kdbus/kdbus.pool.xml
+new file mode 100644
+index 0000000..a9e16f1
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.pool.xml
+@@ -0,0 +1,326 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus.pool">
++
++ <refentryinfo>
++ <title>kdbus.pool</title>
++ <productname>kdbus.pool</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus.pool</refname>
++ <refpurpose>kdbus pool</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Description</title>
++ <para>
++ A pool for data received from the kernel is installed for every
++ <emphasis>connection</emphasis> of the <emphasis>bus</emphasis>, and
++ is sized according to the information stored in the
++ <varname>pool_size</varname> member of <type>struct kdbus_cmd_hello</type>
++ when <constant>KDBUS_CMD_HELLO</constant> is employed. Internally, the
++ pool is segmented into <emphasis>slices</emphasis>, each referenced by its
++ <emphasis>offset</emphasis> in the pool, expressed in <type>bytes</type>.
++ See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more information about <constant>KDBUS_CMD_HELLO</constant>.
++ </para>
++
++ <para>
++ The pool is written to by the kernel when one of the following
++ <emphasis>ioctls</emphasis> is issued:
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_CMD_HELLO</constant></term>
++ <listitem><para>
++ ... to receive details about the bus the connection was made to
++ </para></listitem>
++ </varlistentry>
++ <varlistentry>
++ <term><constant>KDBUS_CMD_RECV</constant></term>
++ <listitem><para>
++ ... to receive a message
++ </para></listitem>
++ </varlistentry>
++ <varlistentry>
++ <term><constant>KDBUS_CMD_LIST</constant></term>
++ <listitem><para>
++ ... to dump the name registry
++ </para></listitem>
++ </varlistentry>
++ <varlistentry>
++ <term><constant>KDBUS_CMD_CONN_INFO</constant></term>
++ <listitem><para>
++ ... to retrieve information on a connection
++ </para></listitem>
++ </varlistentry>
++ <varlistentry>
++ <term><constant>KDBUS_CMD_BUS_CREATOR_INFO</constant></term>
++ <listitem><para>
++ ... to retrieve information about a connection's bus creator
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ </para>
++ <para>
++ The <varname>offset</varname> fields returned by either one of the
++ aforementioned ioctls describe offsets inside the pool. In order to make
++ the slice available for subsequent calls,
++ <constant>KDBUS_CMD_FREE</constant> has to be called on that offset
++ (see below). Otherwise, the pool will fill up, and the connection won't
++ be able to receive any more information through its pool.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Pool slice allocation</title>
++ <para>
++ Pool slices are allocated by the kernel in order to report information
++ back to a task, such as messages, returned name list etc.
++ Allocation of pool slices cannot be initiated by userspace. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ and
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for examples of commands that use the <emphasis>pool</emphasis> to
++ return data.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Accessing the pool memory</title>
++ <para>
++ Memory in the pool is read-only for userspace and may only be written
++ to by the kernel. To read from the pool memory, the caller is expected to
++ <citerefentry>
++ <refentrytitle>mmap</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ the buffer into its task, like this:
++ </para>
++ <programlisting>
++uint8_t *buf = mmap(NULL, size, PROT_READ, MAP_SHARED, conn_fd, 0);
++ </programlisting>
++
++ <para>
++ In order to map the entire pool, the <varname>size</varname> parameter in
++ the example above should be set to the value of the
++ <varname>pool_size</varname> member of
++ <type>struct kdbus_cmd_hello</type> when
++ <constant>KDBUS_CMD_HELLO</constant> was employed to create the
++ connection (see above).
++ </para>
++
++ <para>
++ The <emphasis>file descriptor</emphasis> used to map the memory must be
++ the one that was used to create the <emphasis>connection</emphasis>.
++ In other words, the one that was used to call
++ <constant>KDBUS_CMD_HELLO</constant>. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++
++ <para>
++ Alternatively, instead of mapping the entire pool buffer, only parts
++ of it can be mapped. Every kdbus command that returns an
++ <emphasis>offset</emphasis> (see above) also reports a
++ <emphasis>size</emphasis> along with it, so programs can be written
++ in a way that it only maps portions of the pool to access a specific
++ <emphasis>slice</emphasis>.
++ </para>
++
++ <para>
++ When access to the pool memory is no longer needed, programs should
++ call <function>munmap()</function> on the pointer returned by
++ <function>mmap()</function>.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Freeing pool slices</title>
++ <para>
++ The <constant>KDBUS_CMD_FREE</constant> ioctl is used to free a slice
++ inside the pool, describing an offset that was returned in an
++ <varname>offset</varname> field of another ioctl struct.
++ The <constant>KDBUS_CMD_FREE</constant> command takes a
++ <type>struct kdbus_cmd_free</type> as argument.
++ </para>
++
++<programlisting>
++struct kdbus_cmd_free {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 offset;
++ struct kdbus_item items[0];
++};
++</programlisting>
++
++ <para>The fields in this struct are described below.</para>
++
++ <variablelist>
++ <varlistentry>
++ <term><varname>size</varname></term>
++ <listitem><para>
++ The overall size of the struct, including its items.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>flags</varname></term>
++ <listitem><para>
++ Currently unused.
++ <constant>KDBUS_FLAG_NEGOTIATE</constant> is accepted to probe for
++ valid flags. If set, the ioctl will return <errorcode>0</errorcode>,
++ and the <varname>flags</varname> field is set to
++ <constant>0</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>return_flags</varname></term>
++ <listitem><para>
++ Flags returned by the kernel. Currently unused and always set to
++ <constant>0</constant> by the kernel.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>offset</varname></term>
++ <listitem><para>
++ The offset to free, as returned by other ioctls that allocated
++ memory for returned information.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><varname>items</varname></term>
++ <listitem><para>
++ Items to specify further details for the receive command.
++ Currently unused.
++ Unrecognized items are rejected, and the ioctl will fail with
++ <varname>errno</varname> set to <constant>EINVAL</constant>.
++ All items except for
++ <constant>KDBUS_ITEM_NEGOTIATE</constant> (see
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ ) will be rejected.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect1>
++
++ <refsect1>
++ <title>Return value</title>
++ <para>
++ On success, all mentioned ioctl commands return <errorcode>0</errorcode>;
++ on error, <errorcode>-1</errorcode> is returned, and
++ <varname>errno</varname> is set to indicate the error.
++ If the issued ioctl is illegal for the file descriptor used,
++ <varname>errno</varname> will be set to <constant>ENOTTY</constant>.
++ </para>
++
++ <refsect2>
++ <title>
++ <constant>KDBUS_CMD_FREE</constant> may fail with the following
++ errors
++ </title>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>ENXIO</constant></term>
++ <listitem><para>
++ No pool slice found at given offset.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ Invalid flags provided.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>EINVAL</constant></term>
++ <listitem><para>
++ The offset is valid, but the user is not allowed to free the slice.
++ This happens, for example, if the offset was retrieved with
++ <constant>KDBUS_RECV_PEEK</constant>.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>mmap</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>munmap</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ </simplelist>
++ </refsect1>
++</refentry>
+diff --git a/Documentation/kdbus/kdbus.xml b/Documentation/kdbus/kdbus.xml
+new file mode 100644
+index 0000000..d8e7400
+--- /dev/null
++++ b/Documentation/kdbus/kdbus.xml
+@@ -0,0 +1,1012 @@
++<?xml version='1.0'?> <!--*-nxml-*-->
++<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
++ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
++
++<refentry id="kdbus">
++
++ <refentryinfo>
++ <title>kdbus</title>
++ <productname>kdbus</productname>
++ </refentryinfo>
++
++ <refmeta>
++ <refentrytitle>kdbus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </refmeta>
++
++ <refnamediv>
++ <refname>kdbus</refname>
++ <refpurpose>Kernel Message Bus</refpurpose>
++ </refnamediv>
++
++ <refsect1>
++ <title>Synopsis</title>
++ <para>
++ kdbus is an inter-process communication bus system controlled by the
++ kernel. It provides user-space with an API to create buses and send
++ unicast and multicast messages to one, or many, peers connected to the
++ same bus. It does not enforce any layout on the transmitted data, but
++ only provides the transport layer used for message interchange between
++ peers.
++ </para>
++ <para>
++ This set of man-pages gives a comprehensive overview of the kernel-level
++ API, with all ioctl commands, associated structs and bit masks. However,
++ most people will not use this API level directly, but rather let one of
++ the high-level abstraction libraries help them integrate D-Bus
++ functionality into their applications.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>Description</title>
++ <para>
++ kdbus provides a pseudo filesystem called <emphasis>kdbusfs</emphasis>,
++ which is usually mounted on <filename>/sys/fs/kdbus</filename>. Bus
++ primitives can be accessed as files and sub-directories underneath this
++ mount-point. Any advanced operations are done via
++ <function>ioctl()</function> on files created by
++ <emphasis>kdbusfs</emphasis>. Multiple mount-points of
++ <emphasis>kdbusfs</emphasis> are independent of each other. This allows
++ namespacing of kdbus by mounting a new instance of
++ <emphasis>kdbusfs</emphasis> in a new mount-namespace. kdbus calls these
++ mount instances domains and each bus belongs to exactly one domain.
++ </para>
++
++ <para>
++ kdbus was designed as a transport layer for D-Bus, but is in no way
++ limited, nor controlled by the D-Bus protocol specification. The D-Bus
++ protocol is one possible application layer on top of kdbus.
++ </para>
++
++ <para>
++ For the general D-Bus protocol specification, its payload format, its
++ marshaling, and its communication semantics, please refer to the
++ <ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html">
++ D-Bus specification</ulink>.
++ </para>
++
++ </refsect1>
++
++ <refsect1>
++ <title>Terminology</title>
++
++ <refsect2>
++ <title>Domain</title>
++ <para>
++ A domain is a <emphasis>kdbusfs</emphasis> mount-point containing all
++ the bus primitives. Each domain is independent, and separate domains
++ do not affect each other.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Bus</title>
++ <para>
++ A bus is a named object inside a domain. Clients exchange messages
++ over a bus. Multiple buses themselves have no connection to each other;
++ messages can only be exchanged on the same bus. The default endpoint of
++ a bus, to which clients establish connections, is the "bus" file
++ /sys/fs/kdbus/<bus name>/bus.
++ Common operating system setups create one "system bus" per system,
++ and one "user bus" for every logged-in user. Applications or services
++ may create their own private buses. The kernel driver does not
++ distinguish between different bus types, they are all handled the same
++ way. See
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Endpoint</title>
++ <para>
++ An endpoint provides a file to talk to a bus. Opening an endpoint
++ creates a new connection to the bus to which the endpoint belongs. All
++ endpoints have unique names and are accessible as files underneath the
++ directory of a bus, e.g., /sys/fs/kdbus/<bus>/<endpoint>
++ Every bus has a default endpoint called "bus".
++ A bus can optionally offer additional endpoints with custom names
++ to provide restricted access to the bus. Custom endpoints carry
++ additional policy which can be used to create sandboxes with
++ locked-down, limited, filtered access to a bus. See
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Connection</title>
++ <para>
++ A connection to a bus is created by opening an endpoint file of a
++ bus. Every ordinary client connection has a unique identifier on the
++ bus and can address messages to every other connection on the same
++ bus by using the peer's connection ID as the destination. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Pool</title>
++ <para>
++ Each connection allocates a piece of shmem-backed memory that is
++ used to receive messages and answers to ioctl commands from the kernel.
++ It is never used to send anything to the kernel. In order to access that
++ memory, an application must mmap() it into its address space. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Well-known Name</title>
++ <para>
++ A connection can, in addition to its implicit unique connection ID,
++ request the ownership of a textual well-known name. Well-known names are
++ noted in reverse-domain notation, such as com.example.service1. A
++ connection that offers a service on a bus is usually reached by its
++ well-known name. An analogy of connection ID and well-known name is an
++ IP address and a DNS name associated with that address. See
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Message</title>
++ <para>
++ Connections can exchange messages with other connections by addressing
++ the peers with their connection ID or well-known name. A message
++ consists of a message header with information on how to route the
++ message, and the message payload, which is a logical byte stream of
++ arbitrary size. Messages can carry additional file descriptors to be
++ passed from one connection to another, just like passing file
++ descriptors over UNIX domain sockets. Every connection can specify which
++ set of metadata the kernel should attach to the message when it is
++ delivered to the receiving connection. Metadata contains information
++ like: system time stamps, UID, GID, TID, proc-starttime, well-known
++ names, process comm, process exe, process argv, cgroup, capabilities,
++ seclabel, audit session, loginuid and the connection's human-readable
++ name. See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Item</title>
++ <para>
++ The API of kdbus implements the notion of items, submitted through and
++ returned by most ioctls, and stored inside data structures in the
++ connection's pool. See
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Broadcast, signal, filter, match</title>
++ <para>
++ Signals are messages that a receiver opts in for by installing a blob of
++ bytes, called a 'match'. Signal messages must always carry a
++ counter-part blob, called a 'filter', and signals are only delivered to
++ peers which have a match that white-lists the message's filter. Senders
++ of signal messages can use either a single connection ID as receiver,
++ or the special connection ID
++ <constant>KDBUS_DST_ID_BROADCAST</constant> to potentially send it to
++ all connections of a bus, following the logic described above. See
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ and
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Policy</title>
++ <para>
++ A policy is a set of rules that define which connections can see, talk
++ to, or register a well-known name on the bus. A policy is attached to
++ buses and custom endpoints, and modified by policy holder connections or
++ owners of custom endpoints. See
++ <citerefentry>
++ <refentrytitle>kdbus.policy</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Privileged bus users</title>
++ <para>
++ A user connecting to the bus is considered privileged if it is either
++ the creator of the bus, or if it has the CAP_IPC_OWNER capability flag
++ set. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>Bus Layout</title>
++
++ <para>
++ A <emphasis>bus</emphasis> provides and defines an environment that peers
++ can connect to for message interchange. A bus is created via the kdbus
++ control interface and can be modified by the bus creator. It applies the
++ policy that control all bus operations. The bus creator itself does not
++ participate as a peer. To establish a peer
++ <emphasis>connection</emphasis>, you have to open one of the
++ <emphasis>endpoints</emphasis> of a bus. Each bus provides a default
++ endpoint, but further endpoints can be created on-demand. Endpoints are
++ used to apply additional policies for all connections on this endpoint.
++ Thus, they provide additional filters to further restrict access of
++ specific connections to the bus.
++ </para>
++
++ <para>
++ Following, you can see an example bus layout:
++ </para>
++
++ <programlisting><![CDATA[
++ Bus Creator
++ |
++ |
++ +-----+
++ | Bus |
++ +-----+
++ |
++ __________________/ \__________________
++ / \
++ | |
++ +----------+ +----------+
++ | Endpoint | | Endpoint |
++ +----------+ +----------+
++ _________/|\_________ _________/|\_________
++ / | \ / | \
++ | | | | | |
++ | | | | | |
++ Connection Connection Connection Connection Connection Connection
++ ]]></programlisting>
++
++ </refsect1>
++
++ <refsect1>
++ <title>Data structures and interconnections</title>
++ <programlisting><![CDATA[
++ +--------------------------------------------------------------------------+
++ | Domain (Mount Point) |
++ | /sys/fs/kdbus/control |
++ | +----------------------------------------------------------------------+ |
++ | | Bus (System Bus) | |
++ | | /sys/fs/kdbus/0-system/ | |
++ | | +-------------------------------+ +--------------------------------+ | |
++ | | | Endpoint | | Endpoint | | |
++ | | | /sys/fs/kdbus/0-system/bus | | /sys/fs/kdbus/0-system/ep.app | | |
++ | | +-------------------------------+ +--------------------------------+ | |
++ | | +--------------+ +--------------+ +--------------+ +---------------+ | |
++ | | | Connection | | Connection | | Connection | | Connection | | |
++ | | | :1.22 | | :1.25 | | :1.55 | | :1.81 | | |
++ | | +--------------+ +--------------+ +--------------+ +---------------+ | |
++ | +----------------------------------------------------------------------+ |
++ | |
++ | +----------------------------------------------------------------------+ |
++ | | Bus (User Bus for UID 2702) | |
++ | | /sys/fs/kdbus/2702-user/ | |
++ | | +-------------------------------+ +--------------------------------+ | |
++ | | | Endpoint | | Endpoint | | |
++ | | | /sys/fs/kdbus/2702-user/bus | | /sys/fs/kdbus/2702-user/ep.app | | |
++ | | +-------------------------------+ +--------------------------------+ | |
++ | | +--------------+ +--------------+ +--------------+ +---------------+ | |
++ | | | Connection | | Connection | | Connection | | Connection | | |
++ | | | :1.22 | | :1.25 | | :1.55 | | :1.81 | | |
++ | | +--------------+ +--------------+ +--------------------------------+ | |
++ | +----------------------------------------------------------------------+ |
++ +--------------------------------------------------------------------------+
++ ]]></programlisting>
++ </refsect1>
++
++ <refsect1>
++ <title>Metadata</title>
++
++ <refsect2>
++ <title>When metadata is collected</title>
++ <para>
++ kdbus records data about the system in certain situations. Such metadata
++ can refer to the currently active process (creds, PIDs, current user
++ groups, process names and its executable path, cgroup membership,
++ capabilities, security label and audit information), connection
++ information (description string, currently owned names) and time stamps.
++ </para>
++ <para>
++ Metadata is collected at the following times.
++ </para>
++
++ <itemizedlist>
++ <listitem><para>
++ When a bus is created (<constant>KDBUS_CMD_MAKE</constant>),
++ information about the calling task is collected. This data is returned
++ by the kernel via the <constant>KDBUS_CMD_BUS_CREATOR_INFO</constant>
++ call.
++ </para></listitem>
++
++ <listitem>
++ <para>
++ When a connection is created (<constant>KDBUS_CMD_HELLO</constant>),
++ information about the calling task is collected. Alternatively, a
++ privileged connection may provide 'faked' information about
++ credentials, PIDs and security labels which will be stored instead.
++ This data is returned by the kernel as information on a connection
++ (<constant>KDBUS_CMD_CONN_INFO</constant>). Only metadata that a
++ connection allowed to be sent (by setting its bit in
++ <varname>attach_flags_send</varname>) will be exported in this way.
++ </para>
++ </listitem>
++
++ <listitem>
++ <para>
++ When a message is sent (<constant>KDBUS_CMD_SEND</constant>),
++ information about the sending task and the sending connection is
++ collected. This metadata will be attached to the message when it
++ arrives in the receiver's pool. If the connection sending the
++ message installed faked credentials (see
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>),
++ the message will not be augmented by any information about the
++ currently sending task. Note that only metadata that was requested
++ by the receiving connection will be collected and attached to
++ messages.
++ </para>
++ </listitem>
++ </itemizedlist>
++
++ <para>
++ Which metadata items are actually delivered depends on the following
++ sets and masks:
++ </para>
++
++ <itemizedlist>
++ <listitem><para>
++ (a) the system-wide kmod creds mask
++ (module parameter <varname>attach_flags_mask</varname>)
++ </para></listitem>
++
++ <listitem><para>
++ (b) the per-connection send creds mask, set by the connecting client
++ </para></listitem>
++
++ <listitem><para>
++ (c) the per-connection receive creds mask, set by the connecting
++ client
++ </para></listitem>
++
++ <listitem><para>
++ (d) the per-bus minimal creds mask, set by the bus creator
++ </para></listitem>
++
++ <listitem><para>
++ (e) the per-bus owner creds mask, set by the bus creator
++ </para></listitem>
++
++ <listitem><para>
++ (f) the mask specified when querying creds of a bus peer
++ </para></listitem>
++
++ <listitem><para>
++ (g) the mask specified when querying creds of a bus owner
++ </para></listitem>
++ </itemizedlist>
++
++ <para>
++ With the following rules:
++ </para>
++
++ <itemizedlist>
++ <listitem>
++ <para>
++ [1] The creds attached to messages are determined as
++ <constant>a & b & c</constant>.
++ </para>
++ </listitem>
++
++ <listitem>
++ <para>
++ [2] When connecting to a bus (<constant>KDBUS_CMD_HELLO</constant>),
++ and <constant>~b & d != 0</constant>, the call will fail with,
++ <errorcode>-1</errorcode>, and <varname>errno</varname> is set to
++ <constant>ECONNREFUSED</constant>.
++ </para>
++ </listitem>
++
++ <listitem>
++ <para>
++ [3] When querying creds of a bus peer, the creds returned are
++ <constant>a & b & f</constant>.
++ </para>
++ </listitem>
++
++ <listitem>
++ <para>
++ [4] When querying creds of a bus owner, the creds returned are
++ <constant>a & e & g</constant>.
++ </para>
++ </listitem>
++ </itemizedlist>
++
++ <para>
++ Hence, programs might not always get all requested metadata items that
++ it requested. Code must be written so that it can cope with this fact.
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Benefits and heads-up</title>
++ <para>
++ Attaching metadata to messages has two major benefits.
++
++ <itemizedlist>
++ <listitem>
++ <para>
++ Metadata attached to messages is gathered at the moment when the
++ other side calls <constant>KDBUS_CMD_SEND</constant>, or,
++ respectively, then the kernel notification is generated. There is
++ no need for the receiving peer to retrieve information about the
++ task in a second step. This closes a race gap that would otherwise
++ be inherent.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ As metadata is delivered along with messages in the same data
++ blob, no extra calls to kernel functions etc. are needed to gather
++ them.
++ </para>
++ </listitem>
++ </itemizedlist>
++
++ Note, however, that collecting metadata does come at a price for
++ performance, so developers should carefully assess which metadata to
++ really opt-in for. For best practice, data that is not needed as part
++ of a message should not be requested by the connection in the first
++ place (see <varname>attach_flags_recv</varname> in
++ <constant>KDBUS_CMD_HELLO</constant>).
++ </para>
++ </refsect2>
++
++ <refsect2>
++ <title>Attach flags for metadata items</title>
++ <para>
++ To let the kernel know which metadata information to attach as items
++ to the aforementioned commands, it uses a bitmask. In those, the
++ following <emphasis>attach flags</emphasis> are currently supported.
++ Both the <varname>attach_flags_recv</varname> and
++ <varname>attach_flags_send</varname> fields of
++ <type>struct kdbus_cmd_hello</type>, as well as the payload of the
++ <constant>KDBUS_ITEM_ATTACH_FLAGS_SEND</constant> and
++ <constant>KDBUS_ITEM_ATTACH_FLAGS_RECV</constant> items follow this
++ scheme.
++ </para>
++
++ <variablelist>
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_TIMESTAMP</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_TIMESTAMP</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_CREDS</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_CREDS</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_PIDS</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_PIDS</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_AUXGROUPS</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_AUXGROUPS</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_NAMES</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_OWNED_NAME</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_TID_COMM</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_TID_COMM</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_PID_COMM</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_PID_COMM</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_EXE</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_EXE</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_CMDLINE</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_CMDLINE</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_CGROUP</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_CGROUP</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_CAPS</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_CAPS</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_SECLABEL</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_SECLABEL</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_AUDIT</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_AUDIT</constant>.
++ </para></listitem>
++ </varlistentry>
++
++ <varlistentry>
++ <term><constant>KDBUS_ATTACH_CONN_DESCRIPTION</constant></term>
++ <listitem><para>
++ Requests the attachment of an item of type
++ <constant>KDBUS_ITEM_CONN_DESCRIPTION</constant>.
++ </para></listitem>
++ </varlistentry>
++ </variablelist>
++
++ <para>
++ Please refer to
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for detailed information about the layout and payload of items and
++ what metadata should be used to.
++ </para>
++ </refsect2>
++ </refsect1>
++
++ <refsect1>
++ <title>The ioctl interface</title>
++
++ <para>
++ As stated in the 'synopsis' section above, application developers are
++ strongly encouraged to use kdbus through one of the high-level D-Bus
++ abstraction libraries, rather than using the low-level API directly.
++ </para>
++
++ <para>
++ kdbus on the kernel level exposes its functions exclusively through
++ <citerefentry>
++ <refentrytitle>ioctl</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>,
++ employed on file descriptors returned by
++ <citerefentry>
++ <refentrytitle>open</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ on pseudo files exposed by
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para>
++ <para>
++ Following is a list of all the ioctls, along with the command structs
++ they must be used with.
++ </para>
++
++ <informaltable frame="none">
++ <tgroup cols="3" colsep="1">
++ <thead>
++ <row>
++ <entry>ioctl signature</entry>
++ <entry>command</entry>
++ <entry>transported struct</entry>
++ </row>
++ </thead>
++ <tbody>
++ <row>
++ <entry><constant>0x40189500</constant></entry>
++ <entry><constant>KDBUS_CMD_BUS_MAKE</constant></entry>
++ <entry><type>struct kdbus_cmd *</type></entry>
++ </row><row>
++ <entry><constant>0x40189510</constant></entry>
++ <entry><constant>KDBUS_CMD_ENDPOINT_MAKE</constant></entry>
++ <entry><type>struct kdbus_cmd *</type></entry>
++ </row><row>
++ <entry><constant>0xc0609580</constant></entry>
++ <entry><constant>KDBUS_CMD_HELLO</constant></entry>
++ <entry><type>struct kdbus_cmd_hello *</type></entry>
++ </row><row>
++ <entry><constant>0x40189582</constant></entry>
++ <entry><constant>KDBUS_CMD_BYEBYE</constant></entry>
++ <entry><type>struct kdbus_cmd *</type></entry>
++ </row><row>
++ <entry><constant>0x40389590</constant></entry>
++ <entry><constant>KDBUS_CMD_SEND</constant></entry>
++ <entry><type>struct kdbus_cmd_send *</type></entry>
++ </row><row>
++ <entry><constant>0x80409591</constant></entry>
++ <entry><constant>KDBUS_CMD_RECV</constant></entry>
++ <entry><type>struct kdbus_cmd_recv *</type></entry>
++ </row><row>
++ <entry><constant>0x40209583</constant></entry>
++ <entry><constant>KDBUS_CMD_FREE</constant></entry>
++ <entry><type>struct kdbus_cmd_free *</type></entry>
++ </row><row>
++ <entry><constant>0x401895a0</constant></entry>
++ <entry><constant>KDBUS_CMD_NAME_ACQUIRE</constant></entry>
++ <entry><type>struct kdbus_cmd *</type></entry>
++ </row><row>
++ <entry><constant>0x401895a1</constant></entry>
++ <entry><constant>KDBUS_CMD_NAME_RELEASE</constant></entry>
++ <entry><type>struct kdbus_cmd *</type></entry>
++ </row><row>
++ <entry><constant>0x80289586</constant></entry>
++ <entry><constant>KDBUS_CMD_LIST</constant></entry>
++ <entry><type>struct kdbus_cmd_list *</type></entry>
++ </row><row>
++ <entry><constant>0x80309584</constant></entry>
++ <entry><constant>KDBUS_CMD_CONN_INFO</constant></entry>
++ <entry><type>struct kdbus_cmd_info *</type></entry>
++ </row><row>
++ <entry><constant>0x40209551</constant></entry>
++ <entry><constant>KDBUS_CMD_UPDATE</constant></entry>
++ <entry><type>struct kdbus_cmd *</type></entry>
++ </row><row>
++ <entry><constant>0x80309585</constant></entry>
++ <entry><constant>KDBUS_CMD_BUS_CREATOR_INFO</constant></entry>
++ <entry><type>struct kdbus_cmd_info *</type></entry>
++ </row><row>
++ <entry><constant>0x40189511</constant></entry>
++ <entry><constant>KDBUS_CMD_ENDPOINT_UPDATE</constant></entry>
++ <entry><type>struct kdbus_cmd *</type></entry>
++ </row><row>
++ <entry><constant>0x402095b0</constant></entry>
++ <entry><constant>KDBUS_CMD_MATCH_ADD</constant></entry>
++ <entry><type>struct kdbus_cmd_match *</type></entry>
++ </row><row>
++ <entry><constant>0x402095b1</constant></entry>
++ <entry><constant>KDBUS_CMD_MATCH_REMOVE</constant></entry>
++ <entry><type>struct kdbus_cmd_match *</type></entry>
++ </row>
++ </tbody>
++ </tgroup>
++ </informaltable>
++
++ <para>
++ Depending on the type of <emphasis>kdbusfs</emphasis> node that was
++ opened and what ioctls have been executed on a file descriptor before,
++ a different sub-set of ioctl commands is allowed.
++ </para>
++
++ <itemizedlist>
++ <listitem>
++ <para>
++ On a file descriptor resulting from opening a
++ <emphasis>control node</emphasis>, only the
++ <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl may be executed.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ On a file descriptor resulting from opening a
++ <emphasis>bus endpoint node</emphasis>, only the
++ <constant>KDBUS_CMD_ENDPOINT_MAKE</constant> and
++ <constant>KDBUS_CMD_HELLO</constant> ioctls may be executed.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ A file descriptor that was used to create a bus
++ (via <constant>KDBUS_CMD_BUS_MAKE</constant>) is called a
++ <emphasis>bus owner</emphasis> file descriptor. The bus will be
++ active as long as the file descriptor is kept open.
++ A bus owner file descriptor can not be used to
++ employ any further ioctls. As soon as
++ <citerefentry>
++ <refentrytitle>close</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ is called on it, the bus will be shut down, along will all associated
++ endpoints and connections. See
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ A file descriptor that was used to create an endpoint
++ (via <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>) is called an
++ <emphasis>endpoint owner</emphasis> file descriptor. The endpoint
++ will be active as long as the file descriptor is kept open.
++ An endpoint owner file descriptor can only be used
++ to update details of an endpoint through the
++ <constant>KDBUS_CMD_ENDPOINT_UPDATE</constant> ioctl. As soon as
++ <citerefentry>
++ <refentrytitle>close</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ is called on it, the endpoint will be removed from the bus, and all
++ connections that are connected to the bus through it are shut down.
++ See
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ for more details.
++ </para>
++ </listitem>
++ <listitem>
++ <para>
++ A file descriptor that was used to create a connection
++ (via <constant>KDBUS_CMD_HELLO</constant>) is called a
++ <emphasis>connection owner</emphasis> file descriptor. The connection
++ will be active as long as the file descriptor is kept open.
++ A connection owner file descriptor may be used to
++ issue any of the following ioctls.
++ </para>
++
++ <itemizedlist>
++ <listitem><para>
++ <constant>KDBUS_CMD_UPDATE</constant> to tweak details of the
++ connection. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++
++ <listitem><para>
++ <constant>KDBUS_CMD_BYEBYE</constant> to shut down a connection
++ without losing messages. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++
++ <listitem><para>
++ <constant>KDBUS_CMD_FREE</constant> to free a slice of memory in
++ the pool. See
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++
++ <listitem><para>
++ <constant>KDBUS_CMD_CONN_INFO</constant> to retrieve information
++ on other connections on the bus. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++
++ <listitem><para>
++ <constant>KDBUS_CMD_BUS_CREATOR_INFO</constant> to retrieve
++ information on the bus creator. See
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++
++ <listitem><para>
++ <constant>KDBUS_CMD_LIST</constant> to retrieve a list of
++ currently active well-known names and unique IDs on the bus. See
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++
++ <listitem><para>
++ <constant>KDBUS_CMD_SEND</constant> and
++ <constant>KDBUS_CMD_RECV</constant> to send or receive a message.
++ See
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++
++ <listitem><para>
++ <constant>KDBUS_CMD_NAME_ACQUIRE</constant> and
++ <constant>KDBUS_CMD_NAME_RELEASE</constant> to acquire or release
++ a well-known name on the bus. See
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++
++ <listitem><para>
++ <constant>KDBUS_CMD_MATCH_ADD</constant> and
++ <constant>KDBUS_CMD_MATCH_REMOVE</constant> to add or remove
++ a match for signal messages. See
++ <citerefentry>
++ <refentrytitle>kdbus.match</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>.
++ </para></listitem>
++ </itemizedlist>
++ </listitem>
++ </itemizedlist>
++
++ <para>
++ These ioctls, along with the structs they transport, are explained in
++ detail in the other documents linked to in the "See Also" section below.
++ </para>
++ </refsect1>
++
++ <refsect1>
++ <title>See Also</title>
++ <simplelist type="inline">
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.bus</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.connection</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.endpoint</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.fs</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.item</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.message</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.name</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>kdbus.pool</refentrytitle>
++ <manvolnum>7</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>ioctl</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>mmap</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>open</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <citerefentry>
++ <refentrytitle>close</refentrytitle>
++ <manvolnum>2</manvolnum>
++ </citerefentry>
++ </member>
++ <member>
++ <ulink url="http://freedesktop.org/wiki/Software/dbus">D-Bus</ulink>
++ </member>
++ </simplelist>
++ </refsect1>
++
++</refentry>
+diff --git a/Documentation/kdbus/stylesheet.xsl b/Documentation/kdbus/stylesheet.xsl
+new file mode 100644
+index 0000000..52565ea
+--- /dev/null
++++ b/Documentation/kdbus/stylesheet.xsl
+@@ -0,0 +1,16 @@
++<?xml version="1.0" encoding="UTF-8"?>
++<stylesheet xmlns="http://www.w3.org/1999/XSL/Transform" version="1.0">
++ <param name="chunk.quietly">1</param>
++ <param name="funcsynopsis.style">ansi</param>
++ <param name="funcsynopsis.tabular.threshold">80</param>
++ <param name="callout.graphics">0</param>
++ <param name="paper.type">A4</param>
++ <param name="generate.section.toc.level">2</param>
++ <param name="use.id.as.filename">1</param>
++ <param name="citerefentry.link">1</param>
++ <strip-space elements="*"/>
++ <template name="generate.citerefentry.link">
++ <value-of select="refentrytitle"/>
++ <text>.html</text>
++ </template>
++</stylesheet>
+diff --git a/MAINTAINERS b/MAINTAINERS
+index 6239a30..e924246 100644
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -5503,6 +5503,19 @@ S: Maintained
+ F: Documentation/kbuild/kconfig-language.txt
+ F: scripts/kconfig/
+
++KDBUS
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++M: Daniel Mack <daniel@zonque.org>
++M: David Herrmann <dh.herrmann@googlemail.com>
++M: Djalal Harouni <tixxdz@opendz.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: ipc/kdbus/*
++F: samples/kdbus/*
++F: Documentation/kdbus/*
++F: include/uapi/linux/kdbus.h
++F: tools/testing/selftests/kdbus/
++
+ KDUMP
+ M: Vivek Goyal <vgoyal@redhat.com>
+ M: Haren Myneni <hbabu@us.ibm.com>
+diff --git a/Makefile b/Makefile
+index 1100ff3..08c9818 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1350,6 +1350,7 @@ $(help-board-dirs): help-%:
+ %docs: scripts_basic FORCE
+ $(Q)$(MAKE) $(build)=scripts build_docproc
+ $(Q)$(MAKE) $(build)=Documentation/DocBook $@
++ $(Q)$(MAKE) $(build)=Documentation/kdbus $@
+
+ else # KBUILD_EXTMOD
+
+diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
+index 68ceb97..ddc413e 100644
+--- a/include/uapi/linux/Kbuild
++++ b/include/uapi/linux/Kbuild
+@@ -214,6 +214,7 @@ header-y += ixjuser.h
+ header-y += jffs2.h
+ header-y += joystick.h
+ header-y += kcmp.h
++header-y += kdbus.h
+ header-y += kdev_t.h
+ header-y += kd.h
+ header-y += kernelcapi.h
+diff --git a/include/uapi/linux/kdbus.h b/include/uapi/linux/kdbus.h
+new file mode 100644
+index 0000000..00a6e14
+--- /dev/null
++++ b/include/uapi/linux/kdbus.h
+@@ -0,0 +1,979 @@
++/*
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef _UAPI_KDBUS_H_
++#define _UAPI_KDBUS_H_
++
++#include <linux/ioctl.h>
++#include <linux/types.h>
++
++#define KDBUS_IOCTL_MAGIC 0x95
++#define KDBUS_SRC_ID_KERNEL (0)
++#define KDBUS_DST_ID_NAME (0)
++#define KDBUS_MATCH_ID_ANY (~0ULL)
++#define KDBUS_DST_ID_BROADCAST (~0ULL)
++#define KDBUS_FLAG_NEGOTIATE (1ULL << 63)
++
++/**
++ * struct kdbus_notify_id_change - name registry change message
++ * @id: New or former owner of the name
++ * @flags: flags field from KDBUS_HELLO_*
++ *
++ * Sent from kernel to userspace when the owner or activator of
++ * a well-known name changes.
++ *
++ * Attached to:
++ * KDBUS_ITEM_ID_ADD
++ * KDBUS_ITEM_ID_REMOVE
++ */
++struct kdbus_notify_id_change {
++ __u64 id;
++ __u64 flags;
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_notify_name_change - name registry change message
++ * @old_id: ID and flags of former owner of a name
++ * @new_id: ID and flags of new owner of a name
++ * @name: Well-known name
++ *
++ * Sent from kernel to userspace when the owner or activator of
++ * a well-known name changes.
++ *
++ * Attached to:
++ * KDBUS_ITEM_NAME_ADD
++ * KDBUS_ITEM_NAME_REMOVE
++ * KDBUS_ITEM_NAME_CHANGE
++ */
++struct kdbus_notify_name_change {
++ struct kdbus_notify_id_change old_id;
++ struct kdbus_notify_id_change new_id;
++ char name[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_creds - process credentials
++ * @uid: User ID
++ * @euid: Effective UID
++ * @suid: Saved UID
++ * @fsuid: Filesystem UID
++ * @gid: Group ID
++ * @egid: Effective GID
++ * @sgid: Saved GID
++ * @fsgid: Filesystem GID
++ *
++ * Attached to:
++ * KDBUS_ITEM_CREDS
++ */
++struct kdbus_creds {
++ __u64 uid;
++ __u64 euid;
++ __u64 suid;
++ __u64 fsuid;
++ __u64 gid;
++ __u64 egid;
++ __u64 sgid;
++ __u64 fsgid;
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_pids - process identifiers
++ * @pid: Process ID
++ * @tid: Thread ID
++ * @ppid: Parent process ID
++ *
++ * The PID and TID of a process.
++ *
++ * Attached to:
++ * KDBUS_ITEM_PIDS
++ */
++struct kdbus_pids {
++ __u64 pid;
++ __u64 tid;
++ __u64 ppid;
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_caps - process capabilities
++ * @last_cap: Highest currently known capability bit
++ * @caps: Variable number of 32-bit capabilities flags
++ *
++ * Contains a variable number of 32-bit capabilities flags.
++ *
++ * Attached to:
++ * KDBUS_ITEM_CAPS
++ */
++struct kdbus_caps {
++ __u32 last_cap;
++ __u32 caps[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_audit - audit information
++ * @sessionid: The audit session ID
++ * @loginuid: The audit login uid
++ *
++ * Attached to:
++ * KDBUS_ITEM_AUDIT
++ */
++struct kdbus_audit {
++ __u32 sessionid;
++ __u32 loginuid;
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_timestamp
++ * @seqnum: Global per-domain message sequence number
++ * @monotonic_ns: Monotonic timestamp, in nanoseconds
++ * @realtime_ns: Realtime timestamp, in nanoseconds
++ *
++ * Attached to:
++ * KDBUS_ITEM_TIMESTAMP
++ */
++struct kdbus_timestamp {
++ __u64 seqnum;
++ __u64 monotonic_ns;
++ __u64 realtime_ns;
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_vec - I/O vector for kdbus payload items
++ * @size: The size of the vector
++ * @address: Memory address of data buffer
++ * @offset: Offset in the in-message payload memory,
++ * relative to the message head
++ *
++ * Attached to:
++ * KDBUS_ITEM_PAYLOAD_VEC, KDBUS_ITEM_PAYLOAD_OFF
++ */
++struct kdbus_vec {
++ __u64 size;
++ union {
++ __u64 address;
++ __u64 offset;
++ };
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_bloom_parameter - bus-wide bloom parameters
++ * @size: Size of the bit field in bytes (m / 8)
++ * @n_hash: Number of hash functions used (k)
++ */
++struct kdbus_bloom_parameter {
++ __u64 size;
++ __u64 n_hash;
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_bloom_filter - bloom filter containing n elements
++ * @generation: Generation of the element set in the filter
++ * @data: Bit field, multiple of 8 bytes
++ */
++struct kdbus_bloom_filter {
++ __u64 generation;
++ __u64 data[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_memfd - a kdbus memfd
++ * @start: The offset into the memfd where the segment starts
++ * @size: The size of the memfd segment
++ * @fd: The file descriptor number
++ * @__pad: Padding to ensure proper alignment and size
++ *
++ * Attached to:
++ * KDBUS_ITEM_PAYLOAD_MEMFD
++ */
++struct kdbus_memfd {
++ __u64 start;
++ __u64 size;
++ int fd;
++ __u32 __pad;
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_name - a registered well-known name with its flags
++ * @flags: Flags from KDBUS_NAME_*
++ * @name: Well-known name
++ *
++ * Attached to:
++ * KDBUS_ITEM_OWNED_NAME
++ */
++struct kdbus_name {
++ __u64 flags;
++ char name[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_policy_access_type - permissions of a policy record
++ * @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
++ * @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
++ * @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid
++ * @KDBUS_POLICY_ACCESS_WORLD: World-accessible
++ */
++enum kdbus_policy_access_type {
++ _KDBUS_POLICY_ACCESS_NULL,
++ KDBUS_POLICY_ACCESS_USER,
++ KDBUS_POLICY_ACCESS_GROUP,
++ KDBUS_POLICY_ACCESS_WORLD,
++};
++
++/**
++ * enum kdbus_policy_access_flags - mode flags
++ * @KDBUS_POLICY_OWN: Allow to own a well-known name
++ * Implies KDBUS_POLICY_TALK and KDBUS_POLICY_SEE
++ * @KDBUS_POLICY_TALK: Allow communication to a well-known name
++ * Implies KDBUS_POLICY_SEE
++ * @KDBUS_POLICY_SEE: Allow to see a well-known name
++ */
++enum kdbus_policy_type {
++ KDBUS_POLICY_SEE = 0,
++ KDBUS_POLICY_TALK,
++ KDBUS_POLICY_OWN,
++};
++
++/**
++ * struct kdbus_policy_access - policy access item
++ * @type: One of KDBUS_POLICY_ACCESS_* types
++ * @access: Access to grant
++ * @id: For KDBUS_POLICY_ACCESS_USER, the uid
++ * For KDBUS_POLICY_ACCESS_GROUP, the gid
++ */
++struct kdbus_policy_access {
++ __u64 type; /* USER, GROUP, WORLD */
++ __u64 access; /* OWN, TALK, SEE */
++ __u64 id; /* uid, gid, 0 */
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_attach_flags - flags for metadata attachments
++ * @KDBUS_ATTACH_TIMESTAMP: Timestamp
++ * @KDBUS_ATTACH_CREDS: Credentials
++ * @KDBUS_ATTACH_PIDS: PIDs
++ * @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups
++ * @KDBUS_ATTACH_NAMES: Well-known names
++ * @KDBUS_ATTACH_TID_COMM: The "comm" process identifier of the TID
++ * @KDBUS_ATTACH_PID_COMM: The "comm" process identifier of the PID
++ * @KDBUS_ATTACH_EXE: The path of the executable
++ * @KDBUS_ATTACH_CMDLINE: The process command line
++ * @KDBUS_ATTACH_CGROUP: The croup membership
++ * @KDBUS_ATTACH_CAPS: The process capabilities
++ * @KDBUS_ATTACH_SECLABEL: The security label
++ * @KDBUS_ATTACH_AUDIT: The audit IDs
++ * @KDBUS_ATTACH_CONN_DESCRIPTION: The human-readable connection name
++ * @_KDBUS_ATTACH_ALL: All of the above
++ * @_KDBUS_ATTACH_ANY: Wildcard match to enable any kind of
++ * metatdata.
++ */
++enum kdbus_attach_flags {
++ KDBUS_ATTACH_TIMESTAMP = 1ULL << 0,
++ KDBUS_ATTACH_CREDS = 1ULL << 1,
++ KDBUS_ATTACH_PIDS = 1ULL << 2,
++ KDBUS_ATTACH_AUXGROUPS = 1ULL << 3,
++ KDBUS_ATTACH_NAMES = 1ULL << 4,
++ KDBUS_ATTACH_TID_COMM = 1ULL << 5,
++ KDBUS_ATTACH_PID_COMM = 1ULL << 6,
++ KDBUS_ATTACH_EXE = 1ULL << 7,
++ KDBUS_ATTACH_CMDLINE = 1ULL << 8,
++ KDBUS_ATTACH_CGROUP = 1ULL << 9,
++ KDBUS_ATTACH_CAPS = 1ULL << 10,
++ KDBUS_ATTACH_SECLABEL = 1ULL << 11,
++ KDBUS_ATTACH_AUDIT = 1ULL << 12,
++ KDBUS_ATTACH_CONN_DESCRIPTION = 1ULL << 13,
++ _KDBUS_ATTACH_ALL = (1ULL << 14) - 1,
++ _KDBUS_ATTACH_ANY = ~0ULL
++};
++
++/**
++ * enum kdbus_item_type - item types to chain data in a list
++ * @_KDBUS_ITEM_NULL: Uninitialized/invalid
++ * @_KDBUS_ITEM_USER_BASE: Start of user items
++ * @KDBUS_ITEM_NEGOTIATE: Negotiate supported items
++ * @KDBUS_ITEM_PAYLOAD_VEC: Vector to data
++ * @KDBUS_ITEM_PAYLOAD_OFF: Data at returned offset to message head
++ * @KDBUS_ITEM_PAYLOAD_MEMFD: Data as sealed memfd
++ * @KDBUS_ITEM_FDS: Attached file descriptors
++ * @KDBUS_ITEM_CANCEL_FD: FD used to cancel a synchronous
++ * operation by writing to it from
++ * userspace
++ * @KDBUS_ITEM_BLOOM_PARAMETER: Bus-wide bloom parameters, used with
++ * KDBUS_CMD_BUS_MAKE, carries a
++ * struct kdbus_bloom_parameter
++ * @KDBUS_ITEM_BLOOM_FILTER: Bloom filter carried with a message,
++ * used to match against a bloom mask of a
++ * connection, carries a struct
++ * kdbus_bloom_filter
++ * @KDBUS_ITEM_BLOOM_MASK: Bloom mask used to match against a
++ * message'sbloom filter
++ * @KDBUS_ITEM_DST_NAME: Destination's well-known name
++ * @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint
++ * @KDBUS_ITEM_ATTACH_FLAGS_SEND: Attach-flags, used for updating which
++ * metadata a connection opts in to send
++ * @KDBUS_ITEM_ATTACH_FLAGS_RECV: Attach-flags, used for updating which
++ * metadata a connection requests to
++ * receive for each reeceived message
++ * @KDBUS_ITEM_ID: Connection ID
++ * @KDBUS_ITEM_NAME: Well-know name with flags
++ * @_KDBUS_ITEM_ATTACH_BASE: Start of metadata attach items
++ * @KDBUS_ITEM_TIMESTAMP: Timestamp
++ * @KDBUS_ITEM_CREDS: Process credentials
++ * @KDBUS_ITEM_PIDS: Process identifiers
++ * @KDBUS_ITEM_AUXGROUPS: Auxiliary process groups
++ * @KDBUS_ITEM_OWNED_NAME: A name owned by the associated
++ * connection
++ * @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier
++ * (Don't trust this, see below.)
++ * @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier
++ * (Don't trust this, see below.)
++ * @KDBUS_ITEM_EXE: The path of the executable
++ * (Don't trust this, see below.)
++ * @KDBUS_ITEM_CMDLINE: The process command line
++ * (Don't trust this, see below.)
++ * @KDBUS_ITEM_CGROUP: The croup membership
++ * @KDBUS_ITEM_CAPS: The process capabilities
++ * @KDBUS_ITEM_SECLABEL: The security label
++ * @KDBUS_ITEM_AUDIT: The audit IDs
++ * @KDBUS_ITEM_CONN_DESCRIPTION: The connection's human-readable name
++ * (debugging)
++ * @_KDBUS_ITEM_POLICY_BASE: Start of policy items
++ * @KDBUS_ITEM_POLICY_ACCESS: Policy access block
++ * @_KDBUS_ITEM_KERNEL_BASE: Start of kernel-generated message items
++ * @KDBUS_ITEM_NAME_ADD: Notification in kdbus_notify_name_change
++ * @KDBUS_ITEM_NAME_REMOVE: Notification in kdbus_notify_name_change
++ * @KDBUS_ITEM_NAME_CHANGE: Notification in kdbus_notify_name_change
++ * @KDBUS_ITEM_ID_ADD: Notification in kdbus_notify_id_change
++ * @KDBUS_ITEM_ID_REMOVE: Notification in kdbus_notify_id_change
++ * @KDBUS_ITEM_REPLY_TIMEOUT: Timeout has been reached
++ * @KDBUS_ITEM_REPLY_DEAD: Destination died
++ *
++ * N.B: The process and thread COMM fields, as well as the CMDLINE and
++ * EXE fields may be altered by unprivileged processes und should
++ * hence *not* used for security decisions. Peers should make use of
++ * these items only for informational purposes, such as generating log
++ * records.
++ */
++enum kdbus_item_type {
++ _KDBUS_ITEM_NULL,
++ _KDBUS_ITEM_USER_BASE,
++ KDBUS_ITEM_NEGOTIATE = _KDBUS_ITEM_USER_BASE,
++ KDBUS_ITEM_PAYLOAD_VEC,
++ KDBUS_ITEM_PAYLOAD_OFF,
++ KDBUS_ITEM_PAYLOAD_MEMFD,
++ KDBUS_ITEM_FDS,
++ KDBUS_ITEM_CANCEL_FD,
++ KDBUS_ITEM_BLOOM_PARAMETER,
++ KDBUS_ITEM_BLOOM_FILTER,
++ KDBUS_ITEM_BLOOM_MASK,
++ KDBUS_ITEM_DST_NAME,
++ KDBUS_ITEM_MAKE_NAME,
++ KDBUS_ITEM_ATTACH_FLAGS_SEND,
++ KDBUS_ITEM_ATTACH_FLAGS_RECV,
++ KDBUS_ITEM_ID,
++ KDBUS_ITEM_NAME,
++
++ /* keep these item types in sync with KDBUS_ATTACH_* flags */
++ _KDBUS_ITEM_ATTACH_BASE = 0x1000,
++ KDBUS_ITEM_TIMESTAMP = _KDBUS_ITEM_ATTACH_BASE,
++ KDBUS_ITEM_CREDS,
++ KDBUS_ITEM_PIDS,
++ KDBUS_ITEM_AUXGROUPS,
++ KDBUS_ITEM_OWNED_NAME,
++ KDBUS_ITEM_TID_COMM,
++ KDBUS_ITEM_PID_COMM,
++ KDBUS_ITEM_EXE,
++ KDBUS_ITEM_CMDLINE,
++ KDBUS_ITEM_CGROUP,
++ KDBUS_ITEM_CAPS,
++ KDBUS_ITEM_SECLABEL,
++ KDBUS_ITEM_AUDIT,
++ KDBUS_ITEM_CONN_DESCRIPTION,
++
++ _KDBUS_ITEM_POLICY_BASE = 0x2000,
++ KDBUS_ITEM_POLICY_ACCESS = _KDBUS_ITEM_POLICY_BASE,
++
++ _KDBUS_ITEM_KERNEL_BASE = 0x8000,
++ KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE,
++ KDBUS_ITEM_NAME_REMOVE,
++ KDBUS_ITEM_NAME_CHANGE,
++ KDBUS_ITEM_ID_ADD,
++ KDBUS_ITEM_ID_REMOVE,
++ KDBUS_ITEM_REPLY_TIMEOUT,
++ KDBUS_ITEM_REPLY_DEAD,
++};
++
++/**
++ * struct kdbus_item - chain of data blocks
++ * @size: Overall data record size
++ * @type: Kdbus_item type of data
++ * @data: Generic bytes
++ * @data32: Generic 32 bit array
++ * @data64: Generic 64 bit array
++ * @str: Generic string
++ * @id: Connection ID
++ * @vec: KDBUS_ITEM_PAYLOAD_VEC
++ * @creds: KDBUS_ITEM_CREDS
++ * @audit: KDBUS_ITEM_AUDIT
++ * @timestamp: KDBUS_ITEM_TIMESTAMP
++ * @name: KDBUS_ITEM_NAME
++ * @bloom_parameter: KDBUS_ITEM_BLOOM_PARAMETER
++ * @bloom_filter: KDBUS_ITEM_BLOOM_FILTER
++ * @memfd: KDBUS_ITEM_PAYLOAD_MEMFD
++ * @name_change: KDBUS_ITEM_NAME_ADD
++ * KDBUS_ITEM_NAME_REMOVE
++ * KDBUS_ITEM_NAME_CHANGE
++ * @id_change: KDBUS_ITEM_ID_ADD
++ * KDBUS_ITEM_ID_REMOVE
++ * @policy: KDBUS_ITEM_POLICY_ACCESS
++ */
++struct kdbus_item {
++ __u64 size;
++ __u64 type;
++ union {
++ __u8 data[0];
++ __u32 data32[0];
++ __u64 data64[0];
++ char str[0];
++
++ __u64 id;
++ struct kdbus_vec vec;
++ struct kdbus_creds creds;
++ struct kdbus_pids pids;
++ struct kdbus_audit audit;
++ struct kdbus_caps caps;
++ struct kdbus_timestamp timestamp;
++ struct kdbus_name name;
++ struct kdbus_bloom_parameter bloom_parameter;
++ struct kdbus_bloom_filter bloom_filter;
++ struct kdbus_memfd memfd;
++ int fds[0];
++ struct kdbus_notify_name_change name_change;
++ struct kdbus_notify_id_change id_change;
++ struct kdbus_policy_access policy_access;
++ };
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_msg_flags - type of message
++ * @KDBUS_MSG_EXPECT_REPLY: Expect a reply message, used for
++ * method calls. The userspace-supplied
++ * cookie identifies the message and the
++ * respective reply carries the cookie
++ * in cookie_reply
++ * @KDBUS_MSG_NO_AUTO_START: Do not start a service if the addressed
++ * name is not currently active. This flag is
++ * not looked at by the kernel but only
++ * serves as hint for userspace implementations.
++ * @KDBUS_MSG_SIGNAL: Treat this message as signal
++ */
++enum kdbus_msg_flags {
++ KDBUS_MSG_EXPECT_REPLY = 1ULL << 0,
++ KDBUS_MSG_NO_AUTO_START = 1ULL << 1,
++ KDBUS_MSG_SIGNAL = 1ULL << 2,
++};
++
++/**
++ * enum kdbus_payload_type - type of payload carried by message
++ * @KDBUS_PAYLOAD_KERNEL: Kernel-generated simple message
++ * @KDBUS_PAYLOAD_DBUS: D-Bus marshalling "DBusDBus"
++ *
++ * Any payload-type is accepted. Common types will get added here once
++ * established.
++ */
++enum kdbus_payload_type {
++ KDBUS_PAYLOAD_KERNEL,
++ KDBUS_PAYLOAD_DBUS = 0x4442757344427573ULL,
++};
++
++/**
++ * struct kdbus_msg - the representation of a kdbus message
++ * @size: Total size of the message
++ * @flags: Message flags (KDBUS_MSG_*), userspace → kernel
++ * @priority: Message queue priority value
++ * @dst_id: 64-bit ID of the destination connection
++ * @src_id: 64-bit ID of the source connection
++ * @payload_type: Payload type (KDBUS_PAYLOAD_*)
++ * @cookie: Userspace-supplied cookie, for the connection
++ * to identify its messages
++ * @timeout_ns: The time to wait for a message reply from the peer.
++ * If there is no reply, and the send command is
++ * executed asynchronously, a kernel-generated message
++ * with an attached KDBUS_ITEM_REPLY_TIMEOUT item
++ * is sent to @src_id. For synchronously executed send
++ * command, the value denotes the maximum time the call
++ * blocks to wait for a reply. The timeout is expected in
++ * nanoseconds and as absolute CLOCK_MONOTONIC value.
++ * @cookie_reply: A reply to the requesting message with the same
++ * cookie. The requesting connection can match its
++ * request and the reply with this value
++ * @items: A list of kdbus_items containing the message payload
++ */
++struct kdbus_msg {
++ __u64 size;
++ __u64 flags;
++ __s64 priority;
++ __u64 dst_id;
++ __u64 src_id;
++ __u64 payload_type;
++ __u64 cookie;
++ union {
++ __u64 timeout_ns;
++ __u64 cookie_reply;
++ };
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_msg_info - returned message container
++ * @offset: Offset of kdbus_msg slice in pool
++ * @msg_size: Copy of the kdbus_msg.size field
++ * @return_flags: Command return flags, kernel → userspace
++ */
++struct kdbus_msg_info {
++ __u64 offset;
++ __u64 msg_size;
++ __u64 return_flags;
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_send_flags - flags for sending messages
++ * @KDBUS_SEND_SYNC_REPLY: Wait for destination connection to
++ * reply to this message. The
++ * KDBUS_CMD_SEND ioctl() will block
++ * until the reply is received, and
++ * reply in struct kdbus_cmd_send will
++ * yield the offset in the sender's pool
++ * where the reply can be found.
++ * This flag is only valid if
++ * @KDBUS_MSG_EXPECT_REPLY is set as well.
++ */
++enum kdbus_send_flags {
++ KDBUS_SEND_SYNC_REPLY = 1ULL << 0,
++};
++
++/**
++ * struct kdbus_cmd_send - send message
++ * @size: Overall size of this structure
++ * @flags: Flags to change send behavior (KDBUS_SEND_*)
++ * @return_flags: Command return flags, kernel → userspace
++ * @msg_address: Storage address of the kdbus_msg to send
++ * @reply: Storage for message reply if KDBUS_SEND_SYNC_REPLY
++ * was given
++ * @items: Additional items for this command
++ */
++struct kdbus_cmd_send {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 msg_address;
++ struct kdbus_msg_info reply;
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_recv_flags - flags for de-queuing messages
++ * @KDBUS_RECV_PEEK: Return the next queued message without
++ * actually de-queuing it, and without installing
++ * any file descriptors or other resources. It is
++ * usually used to determine the activating
++ * connection of a bus name.
++ * @KDBUS_RECV_DROP: Drop and free the next queued message and all
++ * its resources without actually receiving it.
++ * @KDBUS_RECV_USE_PRIORITY: Only de-queue messages with the specified or
++ * higher priority (lowest values); if not set,
++ * the priority value is ignored.
++ */
++enum kdbus_recv_flags {
++ KDBUS_RECV_PEEK = 1ULL << 0,
++ KDBUS_RECV_DROP = 1ULL << 1,
++ KDBUS_RECV_USE_PRIORITY = 1ULL << 2,
++};
++
++/**
++ * enum kdbus_recv_return_flags - return flags for message receive commands
++ * @KDBUS_RECV_RETURN_INCOMPLETE_FDS: One or more file descriptors could not
++ * be installed. These descriptors in
++ * KDBUS_ITEM_FDS will carry the value -1.
++ * @KDBUS_RECV_RETURN_DROPPED_MSGS: There have been dropped messages since
++ * the last time a message was received.
++ * The 'dropped_msgs' counter contains the
++ * number of messages dropped pool
++ * overflows or other missed broadcasts.
++ */
++enum kdbus_recv_return_flags {
++ KDBUS_RECV_RETURN_INCOMPLETE_FDS = 1ULL << 0,
++ KDBUS_RECV_RETURN_DROPPED_MSGS = 1ULL << 1,
++};
++
++/**
++ * struct kdbus_cmd_recv - struct to de-queue a buffered message
++ * @size: Overall size of this object
++ * @flags: KDBUS_RECV_* flags, userspace → kernel
++ * @return_flags: Command return flags, kernel → userspace
++ * @priority: Minimum priority of the messages to de-queue. Lowest
++ * values have the highest priority.
++ * @dropped_msgs: In case there were any dropped messages since the last
++ * time a message was received, this will be set to the
++ * number of lost messages and
++ * KDBUS_RECV_RETURN_DROPPED_MSGS will be set in
++ * 'return_flags'. This can only happen if the ioctl
++ * returns 0 or EAGAIN.
++ * @msg: Return storage for received message.
++ * @items: Additional items for this command.
++ *
++ * This struct is used with the KDBUS_CMD_RECV ioctl.
++ */
++struct kdbus_cmd_recv {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __s64 priority;
++ __u64 dropped_msgs;
++ struct kdbus_msg_info msg;
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_cmd_free - struct to free a slice of memory in the pool
++ * @size: Overall size of this structure
++ * @flags: Flags for the free command, userspace → kernel
++ * @return_flags: Command return flags, kernel → userspace
++ * @offset: The offset of the memory slice, as returned by other
++ * ioctls
++ * @items: Additional items to modify the behavior
++ *
++ * This struct is used with the KDBUS_CMD_FREE ioctl.
++ */
++struct kdbus_cmd_free {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 offset;
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_hello_flags - flags for struct kdbus_cmd_hello
++ * @KDBUS_HELLO_ACCEPT_FD: The connection allows the reception of
++ * any passed file descriptors
++ * @KDBUS_HELLO_ACTIVATOR: Special-purpose connection which registers
++ * a well-know name for a process to be started
++ * when traffic arrives
++ * @KDBUS_HELLO_POLICY_HOLDER: Special-purpose connection which registers
++ * policy entries for a name. The provided name
++ * is not activated and not registered with the
++ * name database, it only allows unprivileged
++ * connections to acquire a name, talk or discover
++ * a service
++ * @KDBUS_HELLO_MONITOR: Special-purpose connection to monitor
++ * bus traffic
++ */
++enum kdbus_hello_flags {
++ KDBUS_HELLO_ACCEPT_FD = 1ULL << 0,
++ KDBUS_HELLO_ACTIVATOR = 1ULL << 1,
++ KDBUS_HELLO_POLICY_HOLDER = 1ULL << 2,
++ KDBUS_HELLO_MONITOR = 1ULL << 3,
++};
++
++/**
++ * struct kdbus_cmd_hello - struct to say hello to kdbus
++ * @size: The total size of the structure
++ * @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel
++ * @return_flags: Command return flags, kernel → userspace
++ * @attach_flags_send: Mask of metadata to attach to each message sent
++ * off by this connection (KDBUS_ATTACH_*)
++ * @attach_flags_recv: Mask of metadata to attach to each message receieved
++ * by the new connection (KDBUS_ATTACH_*)
++ * @bus_flags: The flags field copied verbatim from the original
++ * KDBUS_CMD_BUS_MAKE ioctl. It's intended to be useful
++ * to do negotiation of features of the payload that is
++ * transferred (kernel → userspace)
++ * @id: The ID of this connection (kernel → userspace)
++ * @pool_size: Size of the connection's buffer where the received
++ * messages are placed
++ * @offset: Pool offset where items are returned to report
++ * additional information about the bus and the newly
++ * created connection.
++ * @items_size: Size of buffer returned in the pool slice at @offset.
++ * @id128: Unique 128-bit ID of the bus (kernel → userspace)
++ * @items: A list of items
++ *
++ * This struct is used with the KDBUS_CMD_HELLO ioctl.
++ */
++struct kdbus_cmd_hello {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 attach_flags_send;
++ __u64 attach_flags_recv;
++ __u64 bus_flags;
++ __u64 id;
++ __u64 pool_size;
++ __u64 offset;
++ __u64 items_size;
++ __u8 id128[16];
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_info - connection information
++ * @size: total size of the struct
++ * @id: 64bit object ID
++ * @flags: object creation flags
++ * @items: list of items
++ *
++ * Note that the user is responsible for freeing the allocated memory with
++ * the KDBUS_CMD_FREE ioctl.
++ */
++struct kdbus_info {
++ __u64 size;
++ __u64 id;
++ __u64 flags;
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_list_flags - what to include into the returned list
++ * @KDBUS_LIST_UNIQUE: active connections
++ * @KDBUS_LIST_ACTIVATORS: activator connections
++ * @KDBUS_LIST_NAMES: known well-known names
++ * @KDBUS_LIST_QUEUED: queued-up names
++ */
++enum kdbus_list_flags {
++ KDBUS_LIST_UNIQUE = 1ULL << 0,
++ KDBUS_LIST_NAMES = 1ULL << 1,
++ KDBUS_LIST_ACTIVATORS = 1ULL << 2,
++ KDBUS_LIST_QUEUED = 1ULL << 3,
++};
++
++/**
++ * struct kdbus_cmd_list - list connections
++ * @size: overall size of this object
++ * @flags: flags for the query (KDBUS_LIST_*), userspace → kernel
++ * @return_flags: command return flags, kernel → userspace
++ * @offset: Offset in the caller's pool buffer where an array of
++ * kdbus_info objects is stored.
++ * The user must use KDBUS_CMD_FREE to free the
++ * allocated memory.
++ * @list_size: size of returned list in bytes
++ * @items: Items for the command. Reserved for future use.
++ *
++ * This structure is used with the KDBUS_CMD_LIST ioctl.
++ */
++struct kdbus_cmd_list {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 offset;
++ __u64 list_size;
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * struct kdbus_cmd_info - struct used for KDBUS_CMD_CONN_INFO ioctl
++ * @size: The total size of the struct
++ * @flags: Flags for this ioctl, userspace → kernel
++ * @return_flags: Command return flags, kernel → userspace
++ * @id: The 64-bit ID of the connection. If set to zero, passing
++ * @name is required. kdbus will look up the name to
++ * determine the ID in this case.
++ * @attach_flags: Set of attach flags to specify the set of information
++ * to receive, userspace → kernel
++ * @offset: Returned offset in the caller's pool buffer where the
++ * kdbus_info struct result is stored. The user must
++ * use KDBUS_CMD_FREE to free the allocated memory.
++ * @info_size: Output buffer to report size of data at @offset.
++ * @items: The optional item list, containing the
++ * well-known name to look up as a KDBUS_ITEM_NAME.
++ * Only needed in case @id is zero.
++ *
++ * On success, the KDBUS_CMD_CONN_INFO ioctl will return 0 and @offset will
++ * tell the user the offset in the connection pool buffer at which to find the
++ * result in a struct kdbus_info.
++ */
++struct kdbus_cmd_info {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 id;
++ __u64 attach_flags;
++ __u64 offset;
++ __u64 info_size;
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_cmd_match_flags - flags to control the KDBUS_CMD_MATCH_ADD ioctl
++ * @KDBUS_MATCH_REPLACE: If entries with the supplied cookie already
++ * exists, remove them before installing the new
++ * matches.
++ */
++enum kdbus_cmd_match_flags {
++ KDBUS_MATCH_REPLACE = 1ULL << 0,
++};
++
++/**
++ * struct kdbus_cmd_match - struct to add or remove matches
++ * @size: The total size of the struct
++ * @flags: Flags for match command (KDBUS_MATCH_*),
++ * userspace → kernel
++ * @return_flags: Command return flags, kernel → userspace
++ * @cookie: Userspace supplied cookie. When removing, the cookie
++ * identifies the match to remove
++ * @items: A list of items for additional information
++ *
++ * This structure is used with the KDBUS_CMD_MATCH_ADD and
++ * KDBUS_CMD_MATCH_REMOVE ioctl.
++ */
++struct kdbus_cmd_match {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ __u64 cookie;
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,ENDPOINT}_MAKE
++ * @KDBUS_MAKE_ACCESS_GROUP: Make the bus or endpoint node group-accessible
++ * @KDBUS_MAKE_ACCESS_WORLD: Make the bus or endpoint node world-accessible
++ */
++enum kdbus_make_flags {
++ KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0,
++ KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1,
++};
++
++/**
++ * enum kdbus_name_flags - flags for KDBUS_CMD_NAME_ACQUIRE
++ * @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections
++ * @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name
++ * @KDBUS_NAME_QUEUE: Name should be queued if busy
++ * @KDBUS_NAME_IN_QUEUE: Name is queued
++ * @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
++ */
++enum kdbus_name_flags {
++ KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0,
++ KDBUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1,
++ KDBUS_NAME_QUEUE = 1ULL << 2,
++ KDBUS_NAME_IN_QUEUE = 1ULL << 3,
++ KDBUS_NAME_ACTIVATOR = 1ULL << 4,
++};
++
++/**
++ * struct kdbus_cmd - generic ioctl payload
++ * @size: Overall size of this structure
++ * @flags: Flags for this ioctl, userspace → kernel
++ * @return_flags: Ioctl return flags, kernel → userspace
++ * @items: Additional items to modify the behavior
++ *
++ * This is a generic ioctl payload object. It's used by all ioctls that only
++ * take flags and items as input.
++ */
++struct kdbus_cmd {
++ __u64 size;
++ __u64 flags;
++ __u64 return_flags;
++ struct kdbus_item items[0];
++} __attribute__((__aligned__(8)));
++
++/**
++ * Ioctl API
++ *
++ * KDBUS_CMD_BUS_MAKE: After opening the "control" node, this command
++ * creates a new bus with the specified
++ * name. The bus is immediately shut down and
++ * cleaned up when the opened file descriptor is
++ * closed.
++ *
++ * KDBUS_CMD_ENDPOINT_MAKE: Creates a new named special endpoint to talk to
++ * the bus. Such endpoints usually carry a more
++ * restrictive policy and grant restricted access
++ * to specific applications.
++ * KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
++ * to update the policy.
++ *
++ * KDBUS_CMD_HELLO: By opening the bus node, a connection is
++ * created. After a HELLO the opened connection
++ * becomes an active peer on the bus.
++ * KDBUS_CMD_UPDATE: Update the properties of a connection. Used to
++ * update the metadata subscription mask and
++ * policy.
++ * KDBUS_CMD_BYEBYE: Disconnect a connection. If there are no
++ * messages queued up in the connection's pool,
++ * the call succeeds, and the handle is rendered
++ * unusable. Otherwise, -EBUSY is returned without
++ * any further side-effects.
++ * KDBUS_CMD_FREE: Release the allocated memory in the receiver's
++ * pool.
++ * KDBUS_CMD_CONN_INFO: Retrieve credentials and properties of the
++ * initial creator of the connection. The data was
++ * stored at registration time and does not
++ * necessarily represent the connected process or
++ * the actual state of the process.
++ * KDBUS_CMD_BUS_CREATOR_INFO: Retrieve information of the creator of the bus
++ * a connection is attached to.
++ *
++ * KDBUS_CMD_SEND: Send a message and pass data from userspace to
++ * the kernel.
++ * KDBUS_CMD_RECV: Receive a message from the kernel which is
++ * placed in the receiver's pool.
++ *
++ * KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with
++ * the connection. Well-known names are used to
++ * address a peer on the bus.
++ * KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection
++ * currently owns.
++ * KDBUS_CMD_LIST: Retrieve the list of all currently registered
++ * well-known and unique names.
++ *
++ * KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should
++ * be delivered to the connection.
++ * KDBUS_CMD_MATCH_REMOVE: Remove a current match for broadcast messages.
++ */
++enum kdbus_ioctl_type {
++ /* bus owner (00-0f) */
++ KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x00,
++ struct kdbus_cmd),
++
++ /* endpoint owner (10-1f) */
++ KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10,
++ struct kdbus_cmd),
++ KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x11,
++ struct kdbus_cmd),
++
++ /* connection owner (80-ff) */
++ KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x80,
++ struct kdbus_cmd_hello),
++ KDBUS_CMD_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x81,
++ struct kdbus_cmd),
++ KDBUS_CMD_BYEBYE = _IOW(KDBUS_IOCTL_MAGIC, 0x82,
++ struct kdbus_cmd),
++ KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x83,
++ struct kdbus_cmd_free),
++ KDBUS_CMD_CONN_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x84,
++ struct kdbus_cmd_info),
++ KDBUS_CMD_BUS_CREATOR_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x85,
++ struct kdbus_cmd_info),
++ KDBUS_CMD_LIST = _IOR(KDBUS_IOCTL_MAGIC, 0x86,
++ struct kdbus_cmd_list),
++
++ KDBUS_CMD_SEND = _IOW(KDBUS_IOCTL_MAGIC, 0x90,
++ struct kdbus_cmd_send),
++ KDBUS_CMD_RECV = _IOR(KDBUS_IOCTL_MAGIC, 0x91,
++ struct kdbus_cmd_recv),
++
++ KDBUS_CMD_NAME_ACQUIRE = _IOW(KDBUS_IOCTL_MAGIC, 0xa0,
++ struct kdbus_cmd),
++ KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0xa1,
++ struct kdbus_cmd),
++
++ KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0xb0,
++ struct kdbus_cmd_match),
++ KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0xb1,
++ struct kdbus_cmd_match),
++};
++
++#endif /* _UAPI_KDBUS_H_ */
+diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h
+index 7d664ea..1cf05c0 100644
+--- a/include/uapi/linux/magic.h
++++ b/include/uapi/linux/magic.h
+@@ -74,4 +74,6 @@
+ #define BTRFS_TEST_MAGIC 0x73727279
+ #define NSFS_MAGIC 0x6e736673
+
++#define KDBUS_SUPER_MAGIC 0x44427573
++
+ #endif /* __LINUX_MAGIC_H__ */
+diff --git a/init/Kconfig b/init/Kconfig
+index f5dbc6d..6bda631 100644
+--- a/init/Kconfig
++++ b/init/Kconfig
+@@ -261,6 +261,19 @@ config POSIX_MQUEUE_SYSCTL
+ depends on SYSCTL
+ default y
+
++config KDBUS
++ tristate "kdbus interprocess communication"
++ depends on TMPFS
++ help
++ D-Bus is a system for low-latency, low-overhead, easy to use
++ interprocess communication (IPC).
++
++ See the man-pages and HTML files in Documentation/kdbus/
++ that are generated by 'make mandocs' and 'make htmldocs'.
++
++ If you have an ordinary machine, select M here. The module
++ will be called kdbus.
++
+ config CROSS_MEMORY_ATTACH
+ bool "Enable process_vm_readv/writev syscalls"
+ depends on MMU
+diff --git a/ipc/Makefile b/ipc/Makefile
+index 86c7300..68ec416 100644
+--- a/ipc/Makefile
++++ b/ipc/Makefile
+@@ -9,4 +9,4 @@ obj_mq-$(CONFIG_COMPAT) += compat_mq.o
+ obj-$(CONFIG_POSIX_MQUEUE) += mqueue.o msgutil.o $(obj_mq-y)
+ obj-$(CONFIG_IPC_NS) += namespace.o
+ obj-$(CONFIG_POSIX_MQUEUE_SYSCTL) += mq_sysctl.o
+-
++obj-$(CONFIG_KDBUS) += kdbus/
+diff --git a/ipc/kdbus/Makefile b/ipc/kdbus/Makefile
+new file mode 100644
+index 0000000..7ee9271
+--- /dev/null
++++ b/ipc/kdbus/Makefile
+@@ -0,0 +1,22 @@
++kdbus-y := \
++ bus.o \
++ connection.o \
++ endpoint.o \
++ fs.o \
++ handle.o \
++ item.o \
++ main.o \
++ match.o \
++ message.o \
++ metadata.o \
++ names.o \
++ node.o \
++ notify.o \
++ domain.o \
++ policy.o \
++ pool.o \
++ reply.o \
++ queue.o \
++ util.o
++
++obj-$(CONFIG_KDBUS) += kdbus.o
+diff --git a/ipc/kdbus/bus.c b/ipc/kdbus/bus.c
+new file mode 100644
+index 0000000..9d0679e
+--- /dev/null
++++ b/ipc/kdbus/bus.c
+@@ -0,0 +1,560 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/fs.h>
++#include <linux/hashtable.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/random.h>
++#include <linux/sched.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/uio.h>
++
++#include "bus.h"
++#include "notify.h"
++#include "connection.h"
++#include "domain.h"
++#include "endpoint.h"
++#include "handle.h"
++#include "item.h"
++#include "match.h"
++#include "message.h"
++#include "metadata.h"
++#include "names.h"
++#include "policy.h"
++#include "util.h"
++
++static void kdbus_bus_free(struct kdbus_node *node)
++{
++ struct kdbus_bus *bus = container_of(node, struct kdbus_bus, node);
++
++ WARN_ON(!list_empty(&bus->monitors_list));
++ WARN_ON(!hash_empty(bus->conn_hash));
++
++ kdbus_notify_free(bus);
++
++ kdbus_user_unref(bus->creator);
++ kdbus_name_registry_free(bus->name_registry);
++ kdbus_domain_unref(bus->domain);
++ kdbus_policy_db_clear(&bus->policy_db);
++ kdbus_meta_proc_unref(bus->creator_meta);
++ kfree(bus);
++}
++
++static void kdbus_bus_release(struct kdbus_node *node, bool was_active)
++{
++ struct kdbus_bus *bus = container_of(node, struct kdbus_bus, node);
++
++ if (was_active)
++ atomic_dec(&bus->creator->buses);
++}
++
++static struct kdbus_bus *kdbus_bus_new(struct kdbus_domain *domain,
++ const char *name,
++ struct kdbus_bloom_parameter *bloom,
++ const u64 *pattach_owner,
++ const u64 *pattach_recv,
++ u64 flags, kuid_t uid, kgid_t gid)
++{
++ struct kdbus_bus *b;
++ u64 attach_owner;
++ u64 attach_recv;
++ int ret;
++
++ if (bloom->size < 8 || bloom->size > KDBUS_BUS_BLOOM_MAX_SIZE ||
++ !KDBUS_IS_ALIGNED8(bloom->size) || bloom->n_hash < 1)
++ return ERR_PTR(-EINVAL);
++
++ ret = kdbus_sanitize_attach_flags(pattach_recv ? *pattach_recv : 0,
++ &attach_recv);
++ if (ret < 0)
++ return ERR_PTR(ret);
++
++ ret = kdbus_sanitize_attach_flags(pattach_owner ? *pattach_owner : 0,
++ &attach_owner);
++ if (ret < 0)
++ return ERR_PTR(ret);
++
++ ret = kdbus_verify_uid_prefix(name, domain->user_namespace, uid);
++ if (ret < 0)
++ return ERR_PTR(ret);
++
++ b = kzalloc(sizeof(*b), GFP_KERNEL);
++ if (!b)
++ return ERR_PTR(-ENOMEM);
++
++ kdbus_node_init(&b->node, KDBUS_NODE_BUS);
++
++ b->node.free_cb = kdbus_bus_free;
++ b->node.release_cb = kdbus_bus_release;
++ b->node.uid = uid;
++ b->node.gid = gid;
++ b->node.mode = S_IRUSR | S_IXUSR;
++
++ if (flags & (KDBUS_MAKE_ACCESS_GROUP | KDBUS_MAKE_ACCESS_WORLD))
++ b->node.mode |= S_IRGRP | S_IXGRP;
++ if (flags & KDBUS_MAKE_ACCESS_WORLD)
++ b->node.mode |= S_IROTH | S_IXOTH;
++
++ b->id = atomic64_inc_return(&domain->last_id);
++ b->bus_flags = flags;
++ b->attach_flags_req = attach_recv;
++ b->attach_flags_owner = attach_owner;
++ generate_random_uuid(b->id128);
++ b->bloom = *bloom;
++ b->domain = kdbus_domain_ref(domain);
++
++ kdbus_policy_db_init(&b->policy_db);
++
++ init_rwsem(&b->conn_rwlock);
++ hash_init(b->conn_hash);
++ INIT_LIST_HEAD(&b->monitors_list);
++
++ INIT_LIST_HEAD(&b->notify_list);
++ spin_lock_init(&b->notify_lock);
++ mutex_init(&b->notify_flush_lock);
++
++ ret = kdbus_node_link(&b->node, &domain->node, name);
++ if (ret < 0)
++ goto exit_unref;
++
++ /* cache the metadata/credentials of the creator */
++ b->creator_meta = kdbus_meta_proc_new();
++ if (IS_ERR(b->creator_meta)) {
++ ret = PTR_ERR(b->creator_meta);
++ b->creator_meta = NULL;
++ goto exit_unref;
++ }
++
++ ret = kdbus_meta_proc_collect(b->creator_meta,
++ KDBUS_ATTACH_CREDS |
++ KDBUS_ATTACH_PIDS |
++ KDBUS_ATTACH_AUXGROUPS |
++ KDBUS_ATTACH_TID_COMM |
++ KDBUS_ATTACH_PID_COMM |
++ KDBUS_ATTACH_EXE |
++ KDBUS_ATTACH_CMDLINE |
++ KDBUS_ATTACH_CGROUP |
++ KDBUS_ATTACH_CAPS |
++ KDBUS_ATTACH_SECLABEL |
++ KDBUS_ATTACH_AUDIT);
++ if (ret < 0)
++ goto exit_unref;
++
++ b->name_registry = kdbus_name_registry_new();
++ if (IS_ERR(b->name_registry)) {
++ ret = PTR_ERR(b->name_registry);
++ b->name_registry = NULL;
++ goto exit_unref;
++ }
++
++ /*
++ * Bus-limits of the creator are accounted on its real UID, just like
++ * all other per-user limits.
++ */
++ b->creator = kdbus_user_lookup(domain, current_uid());
++ if (IS_ERR(b->creator)) {
++ ret = PTR_ERR(b->creator);
++ b->creator = NULL;
++ goto exit_unref;
++ }
++
++ return b;
++
++exit_unref:
++ kdbus_node_deactivate(&b->node);
++ kdbus_node_unref(&b->node);
++ return ERR_PTR(ret);
++}
++
++/**
++ * kdbus_bus_ref() - increase the reference counter of a kdbus_bus
++ * @bus: The bus to reference
++ *
++ * Every user of a bus, except for its creator, must add a reference to the
++ * kdbus_bus using this function.
++ *
++ * Return: the bus itself
++ */
++struct kdbus_bus *kdbus_bus_ref(struct kdbus_bus *bus)
++{
++ if (bus)
++ kdbus_node_ref(&bus->node);
++ return bus;
++}
++
++/**
++ * kdbus_bus_unref() - decrease the reference counter of a kdbus_bus
++ * @bus: The bus to unref
++ *
++ * Release a reference. If the reference count drops to 0, the bus will be
++ * freed.
++ *
++ * Return: NULL
++ */
++struct kdbus_bus *kdbus_bus_unref(struct kdbus_bus *bus)
++{
++ if (bus)
++ kdbus_node_unref(&bus->node);
++ return NULL;
++}
++
++/**
++ * kdbus_bus_find_conn_by_id() - find a connection with a given id
++ * @bus: The bus to look for the connection
++ * @id: The 64-bit connection id
++ *
++ * Looks up a connection with a given id. The returned connection
++ * is ref'ed, and needs to be unref'ed by the user. Returns NULL if
++ * the connection can't be found.
++ */
++struct kdbus_conn *kdbus_bus_find_conn_by_id(struct kdbus_bus *bus, u64 id)
++{
++ struct kdbus_conn *conn, *found = NULL;
++
++ down_read(&bus->conn_rwlock);
++ hash_for_each_possible(bus->conn_hash, conn, hentry, id)
++ if (conn->id == id) {
++ found = kdbus_conn_ref(conn);
++ break;
++ }
++ up_read(&bus->conn_rwlock);
++
++ return found;
++}
++
++/**
++ * kdbus_bus_broadcast() - send a message to all subscribed connections
++ * @bus: The bus the connections are connected to
++ * @conn_src: The source connection, may be %NULL for kernel notifications
++ * @kmsg: The message to send.
++ *
++ * Send @kmsg to all connections that are currently active on the bus.
++ * Connections must still have matches installed in order to let the message
++ * pass.
++ *
++ * The caller must hold the name-registry lock of @bus.
++ */
++void kdbus_bus_broadcast(struct kdbus_bus *bus,
++ struct kdbus_conn *conn_src,
++ struct kdbus_kmsg *kmsg)
++{
++ struct kdbus_conn *conn_dst;
++ unsigned int i;
++ int ret;
++
++ lockdep_assert_held(&bus->name_registry->rwlock);
++
++ /*
++ * Make sure broadcast are queued on monitors before we send it out to
++ * anyone else. Otherwise, connections might react to broadcasts before
++ * the monitor gets the broadcast queued. In the worst case, the
++ * monitor sees a reaction to the broadcast before the broadcast itself.
++ * We don't give ordering guarantees across connections (and monitors
++ * can re-construct order via sequence numbers), but we should at least
++ * try to avoid re-ordering for monitors.
++ */
++ kdbus_bus_eavesdrop(bus, conn_src, kmsg);
++
++ down_read(&bus->conn_rwlock);
++ hash_for_each(bus->conn_hash, i, conn_dst, hentry) {
++ if (conn_dst->id == kmsg->msg.src_id)
++ continue;
++ if (!kdbus_conn_is_ordinary(conn_dst))
++ continue;
++
++ /*
++ * Check if there is a match for the kmsg object in
++ * the destination connection match db
++ */
++ if (!kdbus_match_db_match_kmsg(conn_dst->match_db, conn_src,
++ kmsg))
++ continue;
++
++ if (conn_src) {
++ u64 attach_flags;
++
++ /*
++ * Anyone can send broadcasts, as they have no
++ * destination. But a receiver needs TALK access to
++ * the sender in order to receive broadcasts.
++ */
++ if (!kdbus_conn_policy_talk(conn_dst, NULL, conn_src))
++ continue;
++
++ attach_flags = kdbus_meta_calc_attach_flags(conn_src,
++ conn_dst);
++
++ /*
++ * Keep sending messages even if we cannot acquire the
++ * requested metadata. It's up to the receiver to drop
++ * messages that lack expected metadata.
++ */
++ if (!conn_src->faked_meta)
++ kdbus_meta_proc_collect(kmsg->proc_meta,
++ attach_flags);
++ kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, conn_src,
++ attach_flags);
++ } else {
++ /*
++ * Check if there is a policy db that prevents the
++ * destination connection from receiving this kernel
++ * notification
++ */
++ if (!kdbus_conn_policy_see_notification(conn_dst, NULL,
++ kmsg))
++ continue;
++ }
++
++ ret = kdbus_conn_entry_insert(conn_src, conn_dst, kmsg, NULL);
++ if (ret < 0)
++ kdbus_conn_lost_message(conn_dst);
++ }
++ up_read(&bus->conn_rwlock);
++}
++
++/**
++ * kdbus_bus_eavesdrop() - send a message to all subscribed monitors
++ * @bus: The bus the monitors are connected to
++ * @conn_src: The source connection, may be %NULL for kernel notifications
++ * @kmsg: The message to send.
++ *
++ * Send @kmsg to all monitors that are currently active on the bus. Monitors
++ * must still have matches installed in order to let the message pass.
++ *
++ * The caller must hold the name-registry lock of @bus.
++ */
++void kdbus_bus_eavesdrop(struct kdbus_bus *bus,
++ struct kdbus_conn *conn_src,
++ struct kdbus_kmsg *kmsg)
++{
++ struct kdbus_conn *conn_dst;
++ int ret;
++
++ /*
++ * Monitor connections get all messages; ignore possible errors
++ * when sending messages to monitor connections.
++ */
++
++ lockdep_assert_held(&bus->name_registry->rwlock);
++
++ down_read(&bus->conn_rwlock);
++ list_for_each_entry(conn_dst, &bus->monitors_list, monitor_entry) {
++ /*
++ * Collect metadata requested by the destination connection.
++ * Ignore errors, as receivers need to check metadata
++ * availability, anyway. So it's still better to send messages
++ * that lack data, than to skip it entirely.
++ */
++ if (conn_src) {
++ u64 attach_flags;
++
++ attach_flags = kdbus_meta_calc_attach_flags(conn_src,
++ conn_dst);
++ if (!conn_src->faked_meta)
++ kdbus_meta_proc_collect(kmsg->proc_meta,
++ attach_flags);
++ kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, conn_src,
++ attach_flags);
++ }
++
++ ret = kdbus_conn_entry_insert(conn_src, conn_dst, kmsg, NULL);
++ if (ret < 0)
++ kdbus_conn_lost_message(conn_dst);
++ }
++ up_read(&bus->conn_rwlock);
++}
++
++/**
++ * kdbus_cmd_bus_make() - handle KDBUS_CMD_BUS_MAKE
++ * @domain: domain to operate on
++ * @argp: command payload
++ *
++ * Return: Newly created bus on success, ERR_PTR on failure.
++ */
++struct kdbus_bus *kdbus_cmd_bus_make(struct kdbus_domain *domain,
++ void __user *argp)
++{
++ struct kdbus_bus *bus = NULL;
++ struct kdbus_cmd *cmd;
++ struct kdbus_ep *ep = NULL;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_MAKE_NAME, .mandatory = true },
++ { .type = KDBUS_ITEM_BLOOM_PARAMETER, .mandatory = true },
++ { .type = KDBUS_ITEM_ATTACH_FLAGS_SEND },
++ { .type = KDBUS_ITEM_ATTACH_FLAGS_RECV },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_MAKE_ACCESS_GROUP |
++ KDBUS_MAKE_ACCESS_WORLD,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret < 0)
++ return ERR_PTR(ret);
++ if (ret > 0)
++ return NULL;
++
++ bus = kdbus_bus_new(domain,
++ argv[1].item->str, &argv[2].item->bloom_parameter,
++ argv[3].item ? argv[3].item->data64 : NULL,
++ argv[4].item ? argv[4].item->data64 : NULL,
++ cmd->flags, current_euid(), current_egid());
++ if (IS_ERR(bus)) {
++ ret = PTR_ERR(bus);
++ bus = NULL;
++ goto exit;
++ }
++
++ if (atomic_inc_return(&bus->creator->buses) > KDBUS_USER_MAX_BUSES) {
++ atomic_dec(&bus->creator->buses);
++ ret = -EMFILE;
++ goto exit;
++ }
++
++ if (!kdbus_node_activate(&bus->node)) {
++ atomic_dec(&bus->creator->buses);
++ ret = -ESHUTDOWN;
++ goto exit;
++ }
++
++ ep = kdbus_ep_new(bus, "bus", cmd->flags, bus->node.uid, bus->node.gid,
++ false);
++ if (IS_ERR(ep)) {
++ ret = PTR_ERR(ep);
++ ep = NULL;
++ goto exit;
++ }
++
++ if (!kdbus_node_activate(&ep->node)) {
++ ret = -ESHUTDOWN;
++ goto exit;
++ }
++
++ /*
++ * Drop our own reference, effectively causing the endpoint to be
++ * deactivated and released when the parent bus is.
++ */
++ ep = kdbus_ep_unref(ep);
++
++exit:
++ ret = kdbus_args_clear(&args, ret);
++ if (ret < 0) {
++ if (ep) {
++ kdbus_node_deactivate(&ep->node);
++ kdbus_ep_unref(ep);
++ }
++ if (bus) {
++ kdbus_node_deactivate(&bus->node);
++ kdbus_bus_unref(bus);
++ }
++ return ERR_PTR(ret);
++ }
++ return bus;
++}
++
++/**
++ * kdbus_cmd_bus_creator_info() - handle KDBUS_CMD_BUS_CREATOR_INFO
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_bus_creator_info(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_cmd_info *cmd;
++ struct kdbus_bus *bus = conn->ep->bus;
++ struct kdbus_pool_slice *slice = NULL;
++ struct kdbus_item_header item_hdr;
++ struct kdbus_info info = {};
++ size_t meta_size, name_len;
++ struct kvec kvec[5];
++ u64 hdr_size = 0;
++ u64 attach_flags;
++ size_t cnt = 0;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ ret = kdbus_sanitize_attach_flags(cmd->attach_flags, &attach_flags);
++ if (ret < 0)
++ goto exit;
++
++ attach_flags &= bus->attach_flags_owner;
++
++ ret = kdbus_meta_export_prepare(bus->creator_meta, NULL,
++ &attach_flags, &meta_size);
++ if (ret < 0)
++ goto exit;
++
++ name_len = strlen(bus->node.name) + 1;
++ info.id = bus->id;
++ info.flags = bus->bus_flags;
++ item_hdr.type = KDBUS_ITEM_MAKE_NAME;
++ item_hdr.size = KDBUS_ITEM_HEADER_SIZE + name_len;
++
++ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &hdr_size);
++ kdbus_kvec_set(&kvec[cnt++], &item_hdr, sizeof(item_hdr), &hdr_size);
++ kdbus_kvec_set(&kvec[cnt++], bus->node.name, name_len, &hdr_size);
++ cnt += !!kdbus_kvec_pad(&kvec[cnt], &hdr_size);
++
++ slice = kdbus_pool_slice_alloc(conn->pool, hdr_size + meta_size, false);
++ if (IS_ERR(slice)) {
++ ret = PTR_ERR(slice);
++ slice = NULL;
++ goto exit;
++ }
++
++ ret = kdbus_meta_export(bus->creator_meta, NULL, attach_flags,
++ slice, hdr_size, &meta_size);
++ if (ret < 0)
++ goto exit;
++
++ info.size = hdr_size + meta_size;
++
++ ret = kdbus_pool_slice_copy_kvec(slice, 0, kvec, cnt, hdr_size);
++ if (ret < 0)
++ goto exit;
++
++ kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->info_size);
++
++ if (kdbus_member_set_user(&cmd->offset, argp, typeof(*cmd), offset) ||
++ kdbus_member_set_user(&cmd->info_size, argp,
++ typeof(*cmd), info_size))
++ ret = -EFAULT;
++
++exit:
++ kdbus_pool_slice_release(slice);
++
++ return kdbus_args_clear(&args, ret);
++}
+diff --git a/ipc/kdbus/bus.h b/ipc/kdbus/bus.h
+new file mode 100644
+index 0000000..5bea5ef
+--- /dev/null
++++ b/ipc/kdbus/bus.h
+@@ -0,0 +1,101 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_BUS_H
++#define __KDBUS_BUS_H
++
++#include <linux/hashtable.h>
++#include <linux/list.h>
++#include <linux/mutex.h>
++#include <linux/rwsem.h>
++#include <linux/spinlock.h>
++#include <uapi/linux/kdbus.h>
++
++#include "metadata.h"
++#include "names.h"
++#include "node.h"
++#include "policy.h"
++
++struct kdbus_conn;
++struct kdbus_domain;
++struct kdbus_kmsg;
++struct kdbus_user;
++
++/**
++ * struct kdbus_bus - bus in a domain
++ * @node: kdbus_node
++ * @id: ID of this bus in the domain
++ * @bus_flags: Simple pass-through flags from userspace to userspace
++ * @attach_flags_req: KDBUS_ATTACH_* flags required by connecting peers
++ * @attach_flags_owner: KDBUS_ATTACH_* flags of bus creator that other
++ * connections can see or query
++ * @id128: Unique random 128 bit ID of this bus
++ * @bloom: Bloom parameters
++ * @domain: Domain of this bus
++ * @creator: Creator of the bus
++ * @creator_meta: Meta information about the bus creator
++ * @policy_db: Policy database for this bus
++ * @name_registry: Name registry of this bus
++ * @conn_rwlock: Read/Write lock for all lists of child connections
++ * @conn_hash: Map of connection IDs
++ * @monitors_list: Connections that monitor this bus
++ * @notify_list: List of pending kernel-generated messages
++ * @notify_lock: Notification list lock
++ * @notify_flush_lock: Notification flushing lock
++ */
++struct kdbus_bus {
++ struct kdbus_node node;
++
++ /* static */
++ u64 id;
++ u64 bus_flags;
++ u64 attach_flags_req;
++ u64 attach_flags_owner;
++ u8 id128[16];
++ struct kdbus_bloom_parameter bloom;
++ struct kdbus_domain *domain;
++ struct kdbus_user *creator;
++ struct kdbus_meta_proc *creator_meta;
++
++ /* protected by own locks */
++ struct kdbus_policy_db policy_db;
++ struct kdbus_name_registry *name_registry;
++
++ /* protected by conn_rwlock */
++ struct rw_semaphore conn_rwlock;
++ DECLARE_HASHTABLE(conn_hash, 8);
++ struct list_head monitors_list;
++
++ /* protected by notify_lock */
++ struct list_head notify_list;
++ spinlock_t notify_lock;
++ struct mutex notify_flush_lock;
++};
++
++struct kdbus_bus *kdbus_bus_ref(struct kdbus_bus *bus);
++struct kdbus_bus *kdbus_bus_unref(struct kdbus_bus *bus);
++
++struct kdbus_conn *kdbus_bus_find_conn_by_id(struct kdbus_bus *bus, u64 id);
++void kdbus_bus_broadcast(struct kdbus_bus *bus,
++ struct kdbus_conn *conn_src,
++ struct kdbus_kmsg *kmsg);
++void kdbus_bus_eavesdrop(struct kdbus_bus *bus,
++ struct kdbus_conn *conn_src,
++ struct kdbus_kmsg *kmsg);
++
++struct kdbus_bus *kdbus_cmd_bus_make(struct kdbus_domain *domain,
++ void __user *argp);
++int kdbus_cmd_bus_creator_info(struct kdbus_conn *conn, void __user *argp);
++
++#endif
+diff --git a/ipc/kdbus/connection.c b/ipc/kdbus/connection.c
+new file mode 100644
+index 0000000..ab476fa
+--- /dev/null
++++ b/ipc/kdbus/connection.c
+@@ -0,0 +1,2214 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/audit.h>
++#include <linux/file.h>
++#include <linux/fs.h>
++#include <linux/fs_struct.h>
++#include <linux/hashtable.h>
++#include <linux/idr.h>
++#include <linux/init.h>
++#include <linux/math64.h>
++#include <linux/mm.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/path.h>
++#include <linux/poll.h>
++#include <linux/sched.h>
++#include <linux/shmem_fs.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/syscalls.h>
++#include <linux/uio.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "endpoint.h"
++#include "handle.h"
++#include "match.h"
++#include "message.h"
++#include "metadata.h"
++#include "names.h"
++#include "domain.h"
++#include "item.h"
++#include "notify.h"
++#include "policy.h"
++#include "pool.h"
++#include "reply.h"
++#include "util.h"
++#include "queue.h"
++
++#define KDBUS_CONN_ACTIVE_BIAS (INT_MIN + 2)
++#define KDBUS_CONN_ACTIVE_NEW (INT_MIN + 1)
++
++static struct kdbus_conn *kdbus_conn_new(struct kdbus_ep *ep, bool privileged,
++ struct kdbus_cmd_hello *hello,
++ const char *name,
++ const struct kdbus_creds *creds,
++ const struct kdbus_pids *pids,
++ const char *seclabel,
++ const char *conn_description)
++{
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ static struct lock_class_key __key;
++#endif
++ struct kdbus_pool_slice *slice = NULL;
++ struct kdbus_bus *bus = ep->bus;
++ struct kdbus_conn *conn;
++ u64 attach_flags_send;
++ u64 attach_flags_recv;
++ u64 items_size = 0;
++ bool is_policy_holder;
++ bool is_activator;
++ bool is_monitor;
++ struct kvec kvec;
++ int ret;
++
++ struct {
++ u64 size;
++ u64 type;
++ struct kdbus_bloom_parameter bloom;
++ } bloom_item;
++
++ is_monitor = hello->flags & KDBUS_HELLO_MONITOR;
++ is_activator = hello->flags & KDBUS_HELLO_ACTIVATOR;
++ is_policy_holder = hello->flags & KDBUS_HELLO_POLICY_HOLDER;
++
++ if (!hello->pool_size || !IS_ALIGNED(hello->pool_size, PAGE_SIZE))
++ return ERR_PTR(-EINVAL);
++ if (is_monitor + is_activator + is_policy_holder > 1)
++ return ERR_PTR(-EINVAL);
++ if (name && !is_activator && !is_policy_holder)
++ return ERR_PTR(-EINVAL);
++ if (!name && (is_activator || is_policy_holder))
++ return ERR_PTR(-EINVAL);
++ if (name && !kdbus_name_is_valid(name, true))
++ return ERR_PTR(-EINVAL);
++ if (is_monitor && ep->user)
++ return ERR_PTR(-EOPNOTSUPP);
++ if (!privileged && (is_activator || is_policy_holder || is_monitor))
++ return ERR_PTR(-EPERM);
++ if ((creds || pids || seclabel) && !privileged)
++ return ERR_PTR(-EPERM);
++
++ ret = kdbus_sanitize_attach_flags(hello->attach_flags_send,
++ &attach_flags_send);
++ if (ret < 0)
++ return ERR_PTR(ret);
++
++ ret = kdbus_sanitize_attach_flags(hello->attach_flags_recv,
++ &attach_flags_recv);
++ if (ret < 0)
++ return ERR_PTR(ret);
++
++ /* The attach flags must always satisfy the bus requirements. */
++ if (bus->attach_flags_req & ~attach_flags_send)
++ return ERR_PTR(-ECONNREFUSED);
++
++ conn = kzalloc(sizeof(*conn), GFP_KERNEL);
++ if (!conn)
++ return ERR_PTR(-ENOMEM);
++
++ kref_init(&conn->kref);
++ atomic_set(&conn->active, KDBUS_CONN_ACTIVE_NEW);
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ lockdep_init_map(&conn->dep_map, "s_active", &__key, 0);
++#endif
++ mutex_init(&conn->lock);
++ INIT_LIST_HEAD(&conn->names_list);
++ INIT_LIST_HEAD(&conn->names_queue_list);
++ INIT_LIST_HEAD(&conn->reply_list);
++ atomic_set(&conn->name_count, 0);
++ atomic_set(&conn->request_count, 0);
++ atomic_set(&conn->lost_count, 0);
++ INIT_DELAYED_WORK(&conn->work, kdbus_reply_list_scan_work);
++ conn->cred = get_current_cred();
++ init_waitqueue_head(&conn->wait);
++ kdbus_queue_init(&conn->queue);
++ conn->privileged = privileged;
++ conn->ep = kdbus_ep_ref(ep);
++ conn->id = atomic64_inc_return(&bus->domain->last_id);
++ conn->flags = hello->flags;
++ atomic64_set(&conn->attach_flags_send, attach_flags_send);
++ atomic64_set(&conn->attach_flags_recv, attach_flags_recv);
++ INIT_LIST_HEAD(&conn->monitor_entry);
++
++ if (conn_description) {
++ conn->description = kstrdup(conn_description, GFP_KERNEL);
++ if (!conn->description) {
++ ret = -ENOMEM;
++ goto exit_unref;
++ }
++ }
++
++ conn->pool = kdbus_pool_new(conn->description, hello->pool_size);
++ if (IS_ERR(conn->pool)) {
++ ret = PTR_ERR(conn->pool);
++ conn->pool = NULL;
++ goto exit_unref;
++ }
++
++ conn->match_db = kdbus_match_db_new();
++ if (IS_ERR(conn->match_db)) {
++ ret = PTR_ERR(conn->match_db);
++ conn->match_db = NULL;
++ goto exit_unref;
++ }
++
++ /* return properties of this connection to the caller */
++ hello->bus_flags = bus->bus_flags;
++ hello->id = conn->id;
++
++ BUILD_BUG_ON(sizeof(bus->id128) != sizeof(hello->id128));
++ memcpy(hello->id128, bus->id128, sizeof(hello->id128));
++
++ conn->meta = kdbus_meta_proc_new();
++ if (IS_ERR(conn->meta)) {
++ ret = PTR_ERR(conn->meta);
++ conn->meta = NULL;
++ goto exit_unref;
++ }
++
++ /* privileged processes can impersonate somebody else */
++ if (creds || pids || seclabel) {
++ ret = kdbus_meta_proc_fake(conn->meta, creds, pids, seclabel);
++ if (ret < 0)
++ goto exit_unref;
++
++ conn->faked_meta = true;
++ } else {
++ ret = kdbus_meta_proc_collect(conn->meta,
++ KDBUS_ATTACH_CREDS |
++ KDBUS_ATTACH_PIDS |
++ KDBUS_ATTACH_AUXGROUPS |
++ KDBUS_ATTACH_TID_COMM |
++ KDBUS_ATTACH_PID_COMM |
++ KDBUS_ATTACH_EXE |
++ KDBUS_ATTACH_CMDLINE |
++ KDBUS_ATTACH_CGROUP |
++ KDBUS_ATTACH_CAPS |
++ KDBUS_ATTACH_SECLABEL |
++ KDBUS_ATTACH_AUDIT);
++ if (ret < 0)
++ goto exit_unref;
++ }
++
++ /*
++ * Account the connection against the current user (UID), or for
++ * custom endpoints use the anonymous user assigned to the endpoint.
++ * Note that limits are always accounted against the real UID, not
++ * the effective UID (cred->user always points to the accounting of
++ * cred->uid, not cred->euid).
++ */
++ if (ep->user) {
++ conn->user = kdbus_user_ref(ep->user);
++ } else {
++ conn->user = kdbus_user_lookup(ep->bus->domain, current_uid());
++ if (IS_ERR(conn->user)) {
++ ret = PTR_ERR(conn->user);
++ conn->user = NULL;
++ goto exit_unref;
++ }
++ }
++
++ if (atomic_inc_return(&conn->user->connections) > KDBUS_USER_MAX_CONN) {
++ /* decremented by destructor as conn->user is valid */
++ ret = -EMFILE;
++ goto exit_unref;
++ }
++
++ bloom_item.size = sizeof(bloom_item);
++ bloom_item.type = KDBUS_ITEM_BLOOM_PARAMETER;
++ bloom_item.bloom = bus->bloom;
++ kdbus_kvec_set(&kvec, &bloom_item, bloom_item.size, &items_size);
++
++ slice = kdbus_pool_slice_alloc(conn->pool, items_size, false);
++ if (IS_ERR(slice)) {
++ ret = PTR_ERR(slice);
++ slice = NULL;
++ goto exit_unref;
++ }
++
++ ret = kdbus_pool_slice_copy_kvec(slice, 0, &kvec, 1, items_size);
++ if (ret < 0)
++ goto exit_unref;
++
++ kdbus_pool_slice_publish(slice, &hello->offset, &hello->items_size);
++ kdbus_pool_slice_release(slice);
++
++ return conn;
++
++exit_unref:
++ kdbus_pool_slice_release(slice);
++ kdbus_conn_unref(conn);
++ return ERR_PTR(ret);
++}
++
++static void __kdbus_conn_free(struct kref *kref)
++{
++ struct kdbus_conn *conn = container_of(kref, struct kdbus_conn, kref);
++
++ WARN_ON(kdbus_conn_active(conn));
++ WARN_ON(delayed_work_pending(&conn->work));
++ WARN_ON(!list_empty(&conn->queue.msg_list));
++ WARN_ON(!list_empty(&conn->names_list));
++ WARN_ON(!list_empty(&conn->names_queue_list));
++ WARN_ON(!list_empty(&conn->reply_list));
++
++ if (conn->user) {
++ atomic_dec(&conn->user->connections);
++ kdbus_user_unref(conn->user);
++ }
++
++ kdbus_meta_proc_unref(conn->meta);
++ kdbus_match_db_free(conn->match_db);
++ kdbus_pool_free(conn->pool);
++ kdbus_ep_unref(conn->ep);
++ put_cred(conn->cred);
++ kfree(conn->description);
++ kfree(conn->quota);
++ kfree(conn);
++}
++
++/**
++ * kdbus_conn_ref() - take a connection reference
++ * @conn: Connection, may be %NULL
++ *
++ * Return: the connection itself
++ */
++struct kdbus_conn *kdbus_conn_ref(struct kdbus_conn *conn)
++{
++ if (conn)
++ kref_get(&conn->kref);
++ return conn;
++}
++
++/**
++ * kdbus_conn_unref() - drop a connection reference
++ * @conn: Connection (may be NULL)
++ *
++ * When the last reference is dropped, the connection's internal structure
++ * is freed.
++ *
++ * Return: NULL
++ */
++struct kdbus_conn *kdbus_conn_unref(struct kdbus_conn *conn)
++{
++ if (conn)
++ kref_put(&conn->kref, __kdbus_conn_free);
++ return NULL;
++}
++
++/**
++ * kdbus_conn_active() - connection is not disconnected
++ * @conn: Connection to check
++ *
++ * Return true if the connection was not disconnected, yet. Note that a
++ * connection might be disconnected asynchronously, unless you hold the
++ * connection lock. If that's not suitable for you, see kdbus_conn_acquire() to
++ * suppress connection shutdown for a short period.
++ *
++ * Return: true if the connection is still active
++ */
++bool kdbus_conn_active(const struct kdbus_conn *conn)
++{
++ return atomic_read(&conn->active) >= 0;
++}
++
++/**
++ * kdbus_conn_acquire() - acquire an active connection reference
++ * @conn: Connection
++ *
++ * Users can close a connection via KDBUS_BYEBYE (or by destroying the
++ * endpoint/bus/...) at any time. Whenever this happens, we should deny any
++ * user-visible action on this connection and signal ECONNRESET instead.
++ * To avoid testing for connection availability everytime you take the
++ * connection-lock, you can acquire a connection for short periods.
++ *
++ * By calling kdbus_conn_acquire(), you gain an "active reference" to the
++ * connection. You must also hold a regular reference at any time! As long as
++ * you hold the active-ref, the connection will not be shut down. However, if
++ * the connection was shut down, you can never acquire an active-ref again.
++ *
++ * kdbus_conn_disconnect() disables the connection and then waits for all active
++ * references to be dropped. It will also wake up any pending operation.
++ * However, you must not sleep for an indefinite period while holding an
++ * active-reference. Otherwise, kdbus_conn_disconnect() might stall. If you need
++ * to sleep for an indefinite period, either release the reference and try to
++ * acquire it again after waking up, or make kdbus_conn_disconnect() wake up
++ * your wait-queue.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_conn_acquire(struct kdbus_conn *conn)
++{
++ if (!atomic_inc_unless_negative(&conn->active))
++ return -ECONNRESET;
++
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ rwsem_acquire_read(&conn->dep_map, 0, 1, _RET_IP_);
++#endif
++
++ return 0;
++}
++
++/**
++ * kdbus_conn_release() - release an active connection reference
++ * @conn: Connection
++ *
++ * This releases an active reference that has been acquired via
++ * kdbus_conn_acquire(). If the connection was already disabled and this is the
++ * last active-ref that is dropped, the disconnect-waiter will be woken up and
++ * properly close the connection.
++ */
++void kdbus_conn_release(struct kdbus_conn *conn)
++{
++ int v;
++
++ if (!conn)
++ return;
++
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ rwsem_release(&conn->dep_map, 1, _RET_IP_);
++#endif
++
++ v = atomic_dec_return(&conn->active);
++ if (v != KDBUS_CONN_ACTIVE_BIAS)
++ return;
++
++ wake_up_all(&conn->wait);
++}
++
++static int kdbus_conn_connect(struct kdbus_conn *conn, const char *name)
++{
++ struct kdbus_ep *ep = conn->ep;
++ struct kdbus_bus *bus = ep->bus;
++ int ret;
++
++ if (WARN_ON(atomic_read(&conn->active) != KDBUS_CONN_ACTIVE_NEW))
++ return -EALREADY;
++
++ /* make sure the ep-node is active while we add our connection */
++ if (!kdbus_node_acquire(&ep->node))
++ return -ESHUTDOWN;
++
++ /* lock order: domain -> bus -> ep -> names -> conn */
++ mutex_lock(&ep->lock);
++ down_write(&bus->conn_rwlock);
++
++ /* link into monitor list */
++ if (kdbus_conn_is_monitor(conn))
++ list_add_tail(&conn->monitor_entry, &bus->monitors_list);
++
++ /* link into bus and endpoint */
++ list_add_tail(&conn->ep_entry, &ep->conn_list);
++ hash_add(bus->conn_hash, &conn->hentry, conn->id);
++
++ /* enable lookups and acquire active ref */
++ atomic_set(&conn->active, 1);
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ rwsem_acquire_read(&conn->dep_map, 0, 1, _RET_IP_);
++#endif
++
++ up_write(&bus->conn_rwlock);
++ mutex_unlock(&ep->lock);
++
++ kdbus_node_release(&ep->node);
++
++ /*
++ * Notify subscribers about the new active connection, unless it is
++ * a monitor. Monitors are invisible on the bus, can't be addressed
++ * directly, and won't cause any notifications.
++ */
++ if (!kdbus_conn_is_monitor(conn)) {
++ ret = kdbus_notify_id_change(conn->ep->bus, KDBUS_ITEM_ID_ADD,
++ conn->id, conn->flags);
++ if (ret < 0)
++ goto exit_disconnect;
++ }
++
++ if (kdbus_conn_is_activator(conn)) {
++ u64 flags = KDBUS_NAME_ACTIVATOR;
++
++ if (WARN_ON(!name)) {
++ ret = -EINVAL;
++ goto exit_disconnect;
++ }
++
++ ret = kdbus_name_acquire(bus->name_registry, conn, name,
++ flags, NULL);
++ if (ret < 0)
++ goto exit_disconnect;
++ }
++
++ kdbus_conn_release(conn);
++ kdbus_notify_flush(bus);
++ return 0;
++
++exit_disconnect:
++ kdbus_conn_release(conn);
++ kdbus_conn_disconnect(conn, false);
++ return ret;
++}
++
++/**
++ * kdbus_conn_disconnect() - disconnect a connection
++ * @conn: The connection to disconnect
++ * @ensure_queue_empty: Flag to indicate if the call should fail in
++ * case the connection's message list is not
++ * empty
++ *
++ * If @ensure_msg_list_empty is true, and the connection has pending messages,
++ * -EBUSY is returned.
++ *
++ * Return: 0 on success, negative errno on failure
++ */
++int kdbus_conn_disconnect(struct kdbus_conn *conn, bool ensure_queue_empty)
++{
++ struct kdbus_queue_entry *entry, *tmp;
++ struct kdbus_bus *bus = conn->ep->bus;
++ struct kdbus_reply *r, *r_tmp;
++ struct kdbus_conn *c;
++ int i, v;
++
++ mutex_lock(&conn->lock);
++ v = atomic_read(&conn->active);
++ if (v == KDBUS_CONN_ACTIVE_NEW) {
++ /* was never connected */
++ mutex_unlock(&conn->lock);
++ return 0;
++ }
++ if (v < 0) {
++ /* already dead */
++ mutex_unlock(&conn->lock);
++ return -ECONNRESET;
++ }
++ if (ensure_queue_empty && !list_empty(&conn->queue.msg_list)) {
++ /* still busy */
++ mutex_unlock(&conn->lock);
++ return -EBUSY;
++ }
++
++ atomic_add(KDBUS_CONN_ACTIVE_BIAS, &conn->active);
++ mutex_unlock(&conn->lock);
++
++ wake_up_interruptible(&conn->wait);
++
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ rwsem_acquire(&conn->dep_map, 0, 0, _RET_IP_);
++ if (atomic_read(&conn->active) != KDBUS_CONN_ACTIVE_BIAS)
++ lock_contended(&conn->dep_map, _RET_IP_);
++#endif
++
++ wait_event(conn->wait,
++ atomic_read(&conn->active) == KDBUS_CONN_ACTIVE_BIAS);
++
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ lock_acquired(&conn->dep_map, _RET_IP_);
++ rwsem_release(&conn->dep_map, 1, _RET_IP_);
++#endif
++
++ cancel_delayed_work_sync(&conn->work);
++ kdbus_policy_remove_owner(&conn->ep->bus->policy_db, conn);
++
++ /* lock order: domain -> bus -> ep -> names -> conn */
++ mutex_lock(&conn->ep->lock);
++ down_write(&bus->conn_rwlock);
++
++ /* remove from bus and endpoint */
++ hash_del(&conn->hentry);
++ list_del(&conn->monitor_entry);
++ list_del(&conn->ep_entry);
++
++ up_write(&bus->conn_rwlock);
++ mutex_unlock(&conn->ep->lock);
++
++ /*
++ * Remove all names associated with this connection; this possibly
++ * moves queued messages back to the activator connection.
++ */
++ kdbus_name_release_all(bus->name_registry, conn);
++
++ /* if we die while other connections wait for our reply, notify them */
++ mutex_lock(&conn->lock);
++ list_for_each_entry_safe(entry, tmp, &conn->queue.msg_list, entry) {
++ if (entry->reply)
++ kdbus_notify_reply_dead(bus,
++ entry->reply->reply_dst->id,
++ entry->reply->cookie);
++ kdbus_queue_entry_free(entry);
++ }
++
++ list_for_each_entry_safe(r, r_tmp, &conn->reply_list, entry)
++ kdbus_reply_unlink(r);
++ mutex_unlock(&conn->lock);
++
++ /* lock order: domain -> bus -> ep -> names -> conn */
++ down_read(&bus->conn_rwlock);
++ hash_for_each(bus->conn_hash, i, c, hentry) {
++ mutex_lock(&c->lock);
++ list_for_each_entry_safe(r, r_tmp, &c->reply_list, entry) {
++ if (r->reply_src == conn) {
++ if (r->sync) {
++ kdbus_sync_reply_wakeup(r, -EPIPE);
++ kdbus_reply_unlink(r);
++ continue;
++ }
++
++ /* send a 'connection dead' notification */
++ kdbus_notify_reply_dead(bus, c->id, r->cookie);
++ kdbus_reply_unlink(r);
++ }
++ }
++ mutex_unlock(&c->lock);
++ }
++ up_read(&bus->conn_rwlock);
++
++ if (!kdbus_conn_is_monitor(conn))
++ kdbus_notify_id_change(bus, KDBUS_ITEM_ID_REMOVE,
++ conn->id, conn->flags);
++
++ kdbus_notify_flush(bus);
++
++ return 0;
++}
++
++/**
++ * kdbus_conn_has_name() - check if a connection owns a name
++ * @conn: Connection
++ * @name: Well-know name to check for
++ *
++ * The caller must hold the registry lock of conn->ep->bus.
++ *
++ * Return: true if the name is currently owned by the connection
++ */
++bool kdbus_conn_has_name(struct kdbus_conn *conn, const char *name)
++{
++ struct kdbus_name_entry *e;
++
++ lockdep_assert_held(&conn->ep->bus->name_registry->rwlock);
++
++ list_for_each_entry(e, &conn->names_list, conn_entry)
++ if (strcmp(e->name, name) == 0)
++ return true;
++
++ return false;
++}
++
++struct kdbus_quota {
++ uint32_t memory;
++ uint16_t msgs;
++ uint8_t fds;
++};
++
++/**
++ * kdbus_conn_quota_inc() - increase quota accounting
++ * @c: connection owning the quota tracking
++ * @u: user to account for (or NULL for kernel accounting)
++ * @memory: size of memory to account for
++ * @fds: number of FDs to account for
++ *
++ * This call manages the quotas on resource @c. That is, it's used if other
++ * users want to use the resources of connection @c, which so far only concerns
++ * the receive queue of the destination.
++ *
++ * This increases the quota-accounting for user @u by @memory bytes and @fds
++ * file descriptors. If the user has already reached the quota limits, this call
++ * will not do any accounting but return a negative error code indicating the
++ * failure.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_conn_quota_inc(struct kdbus_conn *c, struct kdbus_user *u,
++ size_t memory, size_t fds)
++{
++ struct kdbus_quota *quota;
++ size_t available, accounted;
++ unsigned int id;
++
++ /*
++ * Pool Layout:
++ * 50% of a pool is always owned by the connection. It is reserved for
++ * kernel queries, handling received messages and other tasks that are
++ * under control of the pool owner. The other 50% of the pool are used
++ * as incoming queue.
++ * As we optionally support user-space based policies, we need fair
++ * allocation schemes. Furthermore, resource utilization should be
++ * maximized, so only minimal resources stay reserved. However, we need
++ * to adapt to a dynamic number of users, as we cannot know how many
++ * users will talk to a connection. Therefore, the current allocations
++ * works like this:
++ * We limit the number of bytes in a destination's pool per sending
++ * user. The space available for a user is 33% of the unused pool space
++ * (whereas the space used by the user itself is also treated as
++ * 'unused'). This way, we favor users coming first, but keep enough
++ * pool space available for any following users. Given that messages are
++ * dequeued in FIFO order, this should balance nicely if the number of
++ * users grows. At the same time, this algorithm guarantees that the
++ * space available to a connection is reduced dynamically, the more
++ * concurrent users talk to a connection.
++ */
++
++ /* per user-accounting is expensive, so we keep state small */
++ BUILD_BUG_ON(sizeof(quota->memory) != 4);
++ BUILD_BUG_ON(sizeof(quota->msgs) != 2);
++ BUILD_BUG_ON(sizeof(quota->fds) != 1);
++ BUILD_BUG_ON(KDBUS_CONN_MAX_MSGS > U16_MAX);
++ BUILD_BUG_ON(KDBUS_CONN_MAX_FDS_PER_USER > U8_MAX);
++
++ id = u ? u->id : KDBUS_USER_KERNEL_ID;
++ if (id >= c->n_quota) {
++ unsigned int users;
++
++ users = max(KDBUS_ALIGN8(id) + 8, id);
++ quota = krealloc(c->quota, users * sizeof(*quota),
++ GFP_KERNEL | __GFP_ZERO);
++ if (!quota)
++ return -ENOMEM;
++
++ c->n_quota = users;
++ c->quota = quota;
++ }
++
++ quota = &c->quota[id];
++ kdbus_pool_accounted(c->pool, &available, &accounted);
++
++ /* half the pool is _always_ reserved for the pool owner */
++ available /= 2;
++
++ /*
++ * Pool owner slices are un-accounted slices; they can claim more
++ * than 50% of the queue. However, the slice we're dealing with here
++ * belong to the incoming queue, hence they are 'accounted' slices
++ * to which the 50%-limit applies.
++ */
++ if (available < accounted)
++ return -ENOBUFS;
++
++ /* 1/3 of the remaining space (including your own memory) */
++ available = (available - accounted + quota->memory) / 3;
++
++ if (available < quota->memory ||
++ available - quota->memory < memory ||
++ quota->memory + memory > U32_MAX)
++ return -ENOBUFS;
++ if (quota->msgs >= KDBUS_CONN_MAX_MSGS)
++ return -ENOBUFS;
++ if (quota->fds + fds < quota->fds ||
++ quota->fds + fds > KDBUS_CONN_MAX_FDS_PER_USER)
++ return -EMFILE;
++
++ quota->memory += memory;
++ quota->fds += fds;
++ ++quota->msgs;
++ return 0;
++}
++
++/**
++ * kdbus_conn_quota_dec() - decrease quota accounting
++ * @c: connection owning the quota tracking
++ * @u: user which was accounted for (or NULL for kernel accounting)
++ * @memory: size of memory which was accounted for
++ * @fds: number of FDs which were accounted for
++ *
++ * This does the reverse of kdbus_conn_quota_inc(). You have to release any
++ * accounted resources that you called kdbus_conn_quota_inc() for. However, you
++ * must not call kdbus_conn_quota_dec() if the accounting failed (that is,
++ * kdbus_conn_quota_inc() failed).
++ */
++void kdbus_conn_quota_dec(struct kdbus_conn *c, struct kdbus_user *u,
++ size_t memory, size_t fds)
++{
++ struct kdbus_quota *quota;
++ unsigned int id;
++
++ id = u ? u->id : KDBUS_USER_KERNEL_ID;
++ if (WARN_ON(id >= c->n_quota))
++ return;
++
++ quota = &c->quota[id];
++
++ if (!WARN_ON(quota->msgs == 0))
++ --quota->msgs;
++ if (!WARN_ON(quota->memory < memory))
++ quota->memory -= memory;
++ if (!WARN_ON(quota->fds < fds))
++ quota->fds -= fds;
++}
++
++/**
++ * kdbus_conn_lost_message() - handle lost messages
++ * @c: connection that lost a message
++ *
++ * kdbus is reliable. That means, we try hard to never lose messages. However,
++ * memory is limited, so we cannot rely on transmissions to never fail.
++ * Therefore, we use quota-limits to let callers know if there unicast message
++ * cannot be transmitted to a peer. This works fine for unicasts, but for
++ * broadcasts we cannot make the caller handle the transmission failure.
++ * Instead, we must let the destination know that it couldn't receive a
++ * broadcast.
++ * As this is an unlikely scenario, we keep it simple. A single lost-counter
++ * remembers the number of lost messages since the last call to RECV. The next
++ * message retrieval will notify the connection that it lost messages since the
++ * last message retrieval and thus should resync its state.
++ */
++void kdbus_conn_lost_message(struct kdbus_conn *c)
++{
++ if (atomic_inc_return(&c->lost_count) == 1)
++ wake_up_interruptible(&c->wait);
++}
++
++/* Callers should take the conn_dst lock */
++static struct kdbus_queue_entry *
++kdbus_conn_entry_make(struct kdbus_conn *conn_dst,
++ const struct kdbus_kmsg *kmsg,
++ struct kdbus_user *user)
++{
++ struct kdbus_queue_entry *entry;
++
++ /* The remote connection was disconnected */
++ if (!kdbus_conn_active(conn_dst))
++ return ERR_PTR(-ECONNRESET);
++
++ /*
++ * If the connection does not accept file descriptors but the message
++ * has some attached, refuse it.
++ *
++ * If this is a monitor connection, accept the message. In that
++ * case, all file descriptors will be set to -1 at receive time.
++ */
++ if (!kdbus_conn_is_monitor(conn_dst) &&
++ !(conn_dst->flags & KDBUS_HELLO_ACCEPT_FD) &&
++ kmsg->res && kmsg->res->fds_count > 0)
++ return ERR_PTR(-ECOMM);
++
++ entry = kdbus_queue_entry_new(conn_dst, kmsg, user);
++ if (IS_ERR(entry))
++ return entry;
++
++ return entry;
++}
++
++/*
++ * Synchronously responding to a message, allocate a queue entry
++ * and attach it to the reply tracking object.
++ * The connection's queue will never get to see it.
++ */
++static int kdbus_conn_entry_sync_attach(struct kdbus_conn *conn_dst,
++ const struct kdbus_kmsg *kmsg,
++ struct kdbus_reply *reply_wake)
++{
++ struct kdbus_queue_entry *entry;
++ int remote_ret;
++ int ret = 0;
++
++ mutex_lock(&reply_wake->reply_dst->lock);
++
++ /*
++ * If we are still waiting then proceed, allocate a queue
++ * entry and attach it to the reply object
++ */
++ if (reply_wake->waiting) {
++ entry = kdbus_conn_entry_make(conn_dst, kmsg,
++ reply_wake->reply_src->user);
++ if (IS_ERR(entry))
++ ret = PTR_ERR(entry);
++ else
++ /* Attach the entry to the reply object */
++ reply_wake->queue_entry = entry;
++ } else {
++ ret = -ECONNRESET;
++ }
++
++ /*
++ * Update the reply object and wake up remote peer only
++ * on appropriate return codes
++ *
++ * * -ECOMM: if the replying connection failed with -ECOMM
++ * then wakeup remote peer with -EREMOTEIO
++ *
++ * We do this to differenciate between -ECOMM errors
++ * from the original sender perspective:
++ * -ECOMM error during the sync send and
++ * -ECOMM error during the sync reply, this last
++ * one is rewritten to -EREMOTEIO
++ *
++ * * Wake up on all other return codes.
++ */
++ remote_ret = ret;
++
++ if (ret == -ECOMM)
++ remote_ret = -EREMOTEIO;
++
++ kdbus_sync_reply_wakeup(reply_wake, remote_ret);
++ kdbus_reply_unlink(reply_wake);
++ mutex_unlock(&reply_wake->reply_dst->lock);
++
++ return ret;
++}
++
++/**
++ * kdbus_conn_entry_insert() - enqueue a message into the receiver's pool
++ * @conn_src: The sending connection
++ * @conn_dst: The connection to queue into
++ * @kmsg: The kmsg to queue
++ * @reply: The reply tracker to attach to the queue entry
++ *
++ * Return: 0 on success. negative error otherwise.
++ */
++int kdbus_conn_entry_insert(struct kdbus_conn *conn_src,
++ struct kdbus_conn *conn_dst,
++ const struct kdbus_kmsg *kmsg,
++ struct kdbus_reply *reply)
++{
++ struct kdbus_queue_entry *entry;
++ int ret;
++
++ kdbus_conn_lock2(conn_src, conn_dst);
++
++ entry = kdbus_conn_entry_make(conn_dst, kmsg,
++ conn_src ? conn_src->user : NULL);
++ if (IS_ERR(entry)) {
++ ret = PTR_ERR(entry);
++ goto exit_unlock;
++ }
++
++ if (reply) {
++ kdbus_reply_link(reply);
++ if (!reply->sync)
++ schedule_delayed_work(&conn_src->work, 0);
++ }
++
++ kdbus_queue_entry_enqueue(entry, reply);
++ wake_up_interruptible(&conn_dst->wait);
++
++ ret = 0;
++
++exit_unlock:
++ kdbus_conn_unlock2(conn_src, conn_dst);
++ return ret;
++}
++
++static int kdbus_conn_wait_reply(struct kdbus_conn *conn_src,
++ struct kdbus_cmd_send *cmd_send,
++ struct file *ioctl_file,
++ struct file *cancel_fd,
++ struct kdbus_reply *reply_wait,
++ ktime_t expire)
++{
++ struct kdbus_queue_entry *entry;
++ struct poll_wqueues pwq = {};
++ int ret;
++
++ if (WARN_ON(!reply_wait))
++ return -EIO;
++
++ /*
++ * Block until the reply arrives. reply_wait is left untouched
++ * by the timeout scans that might be conducted for other,
++ * asynchronous replies of conn_src.
++ */
++
++ poll_initwait(&pwq);
++ poll_wait(ioctl_file, &conn_src->wait, &pwq.pt);
++
++ for (;;) {
++ /*
++ * Any of the following conditions will stop our synchronously
++ * blocking SEND command:
++ *
++ * a) The origin sender closed its connection
++ * b) The remote peer answered, setting reply_wait->waiting = 0
++ * c) The cancel FD was written to
++ * d) A signal was received
++ * e) The specified timeout was reached, and none of the above
++ * conditions kicked in.
++ */
++
++ /*
++ * We have already acquired an active reference when
++ * entering here, but another thread may call
++ * KDBUS_CMD_BYEBYE which does not acquire an active
++ * reference, therefore kdbus_conn_disconnect() will
++ * not wait for us.
++ */
++ if (!kdbus_conn_active(conn_src)) {
++ ret = -ECONNRESET;
++ break;
++ }
++
++ /*
++ * After the replying peer unset the waiting variable
++ * it will wake up us.
++ */
++ if (!reply_wait->waiting) {
++ ret = reply_wait->err;
++ break;
++ }
++
++ if (cancel_fd) {
++ unsigned int r;
++
++ r = cancel_fd->f_op->poll(cancel_fd, &pwq.pt);
++ if (r & POLLIN) {
++ ret = -ECANCELED;
++ break;
++ }
++ }
++
++ if (signal_pending(current)) {
++ ret = -EINTR;
++ break;
++ }
++
++ if (!poll_schedule_timeout(&pwq, TASK_INTERRUPTIBLE,
++ &expire, 0)) {
++ ret = -ETIMEDOUT;
++ break;
++ }
++
++ /*
++ * Reset the poll worker func, so the waitqueues are not
++ * added to the poll table again. We just reuse what we've
++ * collected earlier for further iterations.
++ */
++ init_poll_funcptr(&pwq.pt, NULL);
++ }
++
++ poll_freewait(&pwq);
++
++ if (ret == -EINTR) {
++ /*
++ * Interrupted system call. Unref the reply object, and pass
++ * the return value down the chain. Mark the reply as
++ * interrupted, so the cleanup work can remove it, but do not
++ * unlink it from the list. Once the syscall restarts, we'll
++ * pick it up and wait on it again.
++ */
++ mutex_lock(&conn_src->lock);
++ reply_wait->interrupted = true;
++ schedule_delayed_work(&conn_src->work, 0);
++ mutex_unlock(&conn_src->lock);
++
++ return -ERESTARTSYS;
++ }
++
++ mutex_lock(&conn_src->lock);
++ reply_wait->waiting = false;
++ entry = reply_wait->queue_entry;
++ if (entry) {
++ ret = kdbus_queue_entry_install(entry,
++ &cmd_send->reply.return_flags,
++ true);
++ kdbus_pool_slice_publish(entry->slice, &cmd_send->reply.offset,
++ &cmd_send->reply.msg_size);
++ kdbus_queue_entry_free(entry);
++ }
++ kdbus_reply_unlink(reply_wait);
++ mutex_unlock(&conn_src->lock);
++
++ return ret;
++}
++
++static int kdbus_pin_dst(struct kdbus_bus *bus,
++ struct kdbus_kmsg *kmsg,
++ struct kdbus_name_entry **out_name,
++ struct kdbus_conn **out_dst)
++{
++ struct kdbus_msg_resources *res = kmsg->res;
++ struct kdbus_name_entry *name = NULL;
++ struct kdbus_conn *dst = NULL;
++ struct kdbus_msg *msg = &kmsg->msg;
++ int ret;
++
++ if (WARN_ON(!res))
++ return -EINVAL;
++
++ lockdep_assert_held(&bus->name_registry->rwlock);
++
++ if (!res->dst_name) {
++ dst = kdbus_bus_find_conn_by_id(bus, msg->dst_id);
++ if (!dst)
++ return -ENXIO;
++
++ if (!kdbus_conn_is_ordinary(dst)) {
++ ret = -ENXIO;
++ goto error;
++ }
++ } else {
++ name = kdbus_name_lookup_unlocked(bus->name_registry,
++ res->dst_name);
++ if (!name)
++ return -ESRCH;
++
++ /*
++ * If both a name and a connection ID are given as destination
++ * of a message, check that the currently owning connection of
++ * the name matches the specified ID.
++ * This way, we allow userspace to send the message to a
++ * specific connection by ID only if the connection currently
++ * owns the given name.
++ */
++ if (msg->dst_id != KDBUS_DST_ID_NAME &&
++ msg->dst_id != name->conn->id)
++ return -EREMCHG;
++
++ if (!name->conn && name->activator)
++ dst = kdbus_conn_ref(name->activator);
++ else
++ dst = kdbus_conn_ref(name->conn);
++
++ if ((msg->flags & KDBUS_MSG_NO_AUTO_START) &&
++ kdbus_conn_is_activator(dst)) {
++ ret = -EADDRNOTAVAIL;
++ goto error;
++ }
++
++ /*
++ * Record the sequence number of the registered name; it will
++ * be passed on to the queue, in case messages addressed to a
++ * name need to be moved from or to an activator.
++ */
++ kmsg->dst_name_id = name->name_id;
++ }
++
++ *out_name = name;
++ *out_dst = dst;
++ return 0;
++
++error:
++ kdbus_conn_unref(dst);
++ return ret;
++}
++
++static int kdbus_conn_reply(struct kdbus_conn *src, struct kdbus_kmsg *kmsg)
++{
++ struct kdbus_name_entry *name = NULL;
++ struct kdbus_reply *reply, *wake = NULL;
++ struct kdbus_conn *dst = NULL;
++ struct kdbus_bus *bus = src->ep->bus;
++ u64 attach;
++ int ret;
++
++ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
++ WARN_ON(kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY) ||
++ WARN_ON(kmsg->msg.flags & KDBUS_MSG_SIGNAL))
++ return -EINVAL;
++
++ /* name-registry must be locked for lookup *and* collecting data */
++ down_read(&bus->name_registry->rwlock);
++
++ /* find and pin destination */
++
++ ret = kdbus_pin_dst(bus, kmsg, &name, &dst);
++ if (ret < 0)
++ goto exit;
++
++ mutex_lock(&dst->lock);
++ reply = kdbus_reply_find(src, dst, kmsg->msg.cookie_reply);
++ if (reply) {
++ if (reply->sync)
++ wake = kdbus_reply_ref(reply);
++ kdbus_reply_unlink(reply);
++ }
++ mutex_unlock(&dst->lock);
++
++ if (!reply) {
++ ret = -EPERM;
++ goto exit;
++ }
++
++ /* attach metadata */
++
++ attach = kdbus_meta_calc_attach_flags(src, dst);
++
++ if (!src->faked_meta) {
++ ret = kdbus_meta_proc_collect(kmsg->proc_meta, attach);
++ if (ret < 0)
++ goto exit;
++ }
++
++ ret = kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, src, attach);
++ if (ret < 0)
++ goto exit;
++
++ /* send message */
++
++ kdbus_bus_eavesdrop(bus, src, kmsg);
++
++ if (wake)
++ ret = kdbus_conn_entry_sync_attach(dst, kmsg, wake);
++ else
++ ret = kdbus_conn_entry_insert(src, dst, kmsg, NULL);
++
++exit:
++ up_read(&bus->name_registry->rwlock);
++ kdbus_reply_unref(wake);
++ kdbus_conn_unref(dst);
++ return ret;
++}
++
++static struct kdbus_reply *kdbus_conn_call(struct kdbus_conn *src,
++ struct kdbus_kmsg *kmsg,
++ ktime_t exp)
++{
++ struct kdbus_name_entry *name = NULL;
++ struct kdbus_reply *wait = NULL;
++ struct kdbus_conn *dst = NULL;
++ struct kdbus_bus *bus = src->ep->bus;
++ u64 attach;
++ int ret;
++
++ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
++ WARN_ON(kmsg->msg.flags & KDBUS_MSG_SIGNAL) ||
++ WARN_ON(!(kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY)))
++ return ERR_PTR(-EINVAL);
++
++ /* resume previous wait-context, if available */
++
++ mutex_lock(&src->lock);
++ wait = kdbus_reply_find(NULL, src, kmsg->msg.cookie);
++ if (wait) {
++ if (wait->interrupted) {
++ kdbus_reply_ref(wait);
++ wait->interrupted = false;
++ } else {
++ wait = NULL;
++ }
++ }
++ mutex_unlock(&src->lock);
++
++ if (wait)
++ return wait;
++
++ if (ktime_compare(ktime_get(), exp) >= 0)
++ return ERR_PTR(-ETIMEDOUT);
++
++ /* name-registry must be locked for lookup *and* collecting data */
++ down_read(&bus->name_registry->rwlock);
++
++ /* find and pin destination */
++
++ ret = kdbus_pin_dst(bus, kmsg, &name, &dst);
++ if (ret < 0)
++ goto exit;
++
++ if (!kdbus_conn_policy_talk(src, current_cred(), dst)) {
++ ret = -EPERM;
++ goto exit;
++ }
++
++ wait = kdbus_reply_new(dst, src, &kmsg->msg, name, true);
++ if (IS_ERR(wait)) {
++ ret = PTR_ERR(wait);
++ wait = NULL;
++ goto exit;
++ }
++
++ /* attach metadata */
++
++ attach = kdbus_meta_calc_attach_flags(src, dst);
++
++ if (!src->faked_meta) {
++ ret = kdbus_meta_proc_collect(kmsg->proc_meta, attach);
++ if (ret < 0)
++ goto exit;
++ }
++
++ ret = kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, src, attach);
++ if (ret < 0)
++ goto exit;
++
++ /* send message */
++
++ kdbus_bus_eavesdrop(bus, src, kmsg);
++
++ ret = kdbus_conn_entry_insert(src, dst, kmsg, wait);
++ if (ret < 0)
++ goto exit;
++
++ ret = 0;
++
++exit:
++ up_read(&bus->name_registry->rwlock);
++ if (ret < 0) {
++ kdbus_reply_unref(wait);
++ wait = ERR_PTR(ret);
++ }
++ kdbus_conn_unref(dst);
++ return wait;
++}
++
++static int kdbus_conn_unicast(struct kdbus_conn *src, struct kdbus_kmsg *kmsg)
++{
++ struct kdbus_name_entry *name = NULL;
++ struct kdbus_reply *wait = NULL;
++ struct kdbus_conn *dst = NULL;
++ struct kdbus_bus *bus = src->ep->bus;
++ bool is_signal = (kmsg->msg.flags & KDBUS_MSG_SIGNAL);
++ u64 attach;
++ int ret = 0;
++
++ if (WARN_ON(kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) ||
++ WARN_ON(!(kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY) &&
++ kmsg->msg.cookie_reply != 0))
++ return -EINVAL;
++
++ /* name-registry must be locked for lookup *and* collecting data */
++ down_read(&bus->name_registry->rwlock);
++
++ /* find and pin destination */
++
++ ret = kdbus_pin_dst(bus, kmsg, &name, &dst);
++ if (ret < 0)
++ goto exit;
++
++ if (is_signal) {
++ /* like broadcasts we eavesdrop even if the msg is dropped */
++ kdbus_bus_eavesdrop(bus, src, kmsg);
++
++ /* drop silently if peer is not interested or not privileged */
++ if (!kdbus_match_db_match_kmsg(dst->match_db, src, kmsg) ||
++ !kdbus_conn_policy_talk(dst, NULL, src))
++ goto exit;
++ } else if (!kdbus_conn_policy_talk(src, current_cred(), dst)) {
++ ret = -EPERM;
++ goto exit;
++ } else if (kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY) {
++ wait = kdbus_reply_new(dst, src, &kmsg->msg, name, false);
++ if (IS_ERR(wait)) {
++ ret = PTR_ERR(wait);
++ wait = NULL;
++ goto exit;
++ }
++ }
++
++ /* attach metadata */
++
++ attach = kdbus_meta_calc_attach_flags(src, dst);
++
++ if (!src->faked_meta) {
++ ret = kdbus_meta_proc_collect(kmsg->proc_meta, attach);
++ if (ret < 0 && !is_signal)
++ goto exit;
++ }
++
++ ret = kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, src, attach);
++ if (ret < 0 && !is_signal)
++ goto exit;
++
++ /* send message */
++
++ if (!is_signal)
++ kdbus_bus_eavesdrop(bus, src, kmsg);
++
++ ret = kdbus_conn_entry_insert(src, dst, kmsg, wait);
++ if (ret < 0 && !is_signal)
++ goto exit;
++
++ /* signals are treated like broadcasts, recv-errors are ignored */
++ ret = 0;
++
++exit:
++ up_read(&bus->name_registry->rwlock);
++ kdbus_reply_unref(wait);
++ kdbus_conn_unref(dst);
++ return ret;
++}
++
++/**
++ * kdbus_conn_move_messages() - move messages from one connection to another
++ * @conn_dst: Connection to copy to
++ * @conn_src: Connection to copy from
++ * @name_id: Filter for the sequence number of the registered
++ * name, 0 means no filtering.
++ *
++ * Move all messages from one connection to another. This is used when
++ * an implementer connection is taking over/giving back a well-known name
++ * from/to an activator connection.
++ */
++void kdbus_conn_move_messages(struct kdbus_conn *conn_dst,
++ struct kdbus_conn *conn_src,
++ u64 name_id)
++{
++ struct kdbus_queue_entry *e, *e_tmp;
++ struct kdbus_reply *r, *r_tmp;
++ struct kdbus_bus *bus;
++ struct kdbus_conn *c;
++ LIST_HEAD(msg_list);
++ int i, ret = 0;
++
++ if (WARN_ON(conn_src == conn_dst))
++ return;
++
++ bus = conn_src->ep->bus;
++
++ /* lock order: domain -> bus -> ep -> names -> conn */
++ down_read(&bus->conn_rwlock);
++ hash_for_each(bus->conn_hash, i, c, hentry) {
++ if (c == conn_src || c == conn_dst)
++ continue;
++
++ mutex_lock(&c->lock);
++ list_for_each_entry_safe(r, r_tmp, &c->reply_list, entry) {
++ if (r->reply_src != conn_src)
++ continue;
++
++ /* filter messages for a specific name */
++ if (name_id > 0 && r->name_id != name_id)
++ continue;
++
++ kdbus_conn_unref(r->reply_src);
++ r->reply_src = kdbus_conn_ref(conn_dst);
++ }
++ mutex_unlock(&c->lock);
++ }
++ up_read(&bus->conn_rwlock);
++
++ kdbus_conn_lock2(conn_src, conn_dst);
++ list_for_each_entry_safe(e, e_tmp, &conn_src->queue.msg_list, entry) {
++ /* filter messages for a specific name */
++ if (name_id > 0 && e->dst_name_id != name_id)
++ continue;
++
++ if (!(conn_dst->flags & KDBUS_HELLO_ACCEPT_FD) &&
++ e->msg_res && e->msg_res->fds_count > 0) {
++ kdbus_conn_lost_message(conn_dst);
++ kdbus_queue_entry_free(e);
++ continue;
++ }
++
++ ret = kdbus_queue_entry_move(e, conn_dst);
++ if (ret < 0) {
++ kdbus_conn_lost_message(conn_dst);
++ kdbus_queue_entry_free(e);
++ continue;
++ }
++ }
++ kdbus_conn_unlock2(conn_src, conn_dst);
++
++ /* wake up poll() */
++ wake_up_interruptible(&conn_dst->wait);
++}
++
++/* query the policy-database for all names of @whom */
++static bool kdbus_conn_policy_query_all(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ struct kdbus_policy_db *db,
++ struct kdbus_conn *whom,
++ unsigned int access)
++{
++ struct kdbus_name_entry *ne;
++ bool pass = false;
++ int res;
++
++ lockdep_assert_held(&conn->ep->bus->name_registry->rwlock);
++
++ down_read(&db->entries_rwlock);
++ mutex_lock(&whom->lock);
++
++ list_for_each_entry(ne, &whom->names_list, conn_entry) {
++ res = kdbus_policy_query_unlocked(db, conn_creds ? : conn->cred,
++ ne->name,
++ kdbus_strhash(ne->name));
++ if (res >= (int)access) {
++ pass = true;
++ break;
++ }
++ }
++
++ mutex_unlock(&whom->lock);
++ up_read(&db->entries_rwlock);
++
++ return pass;
++}
++
++/**
++ * kdbus_conn_policy_own_name() - verify a connection can own the given name
++ * @conn: Connection
++ * @conn_creds: Credentials of @conn to use for policy check
++ * @name: Name
++ *
++ * This verifies that @conn is allowed to acquire the well-known name @name.
++ *
++ * Return: true if allowed, false if not.
++ */
++bool kdbus_conn_policy_own_name(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ const char *name)
++{
++ unsigned int hash = kdbus_strhash(name);
++ int res;
++
++ if (!conn_creds)
++ conn_creds = conn->cred;
++
++ if (conn->ep->user) {
++ res = kdbus_policy_query(&conn->ep->policy_db, conn_creds,
++ name, hash);
++ if (res < KDBUS_POLICY_OWN)
++ return false;
++ }
++
++ if (conn->privileged)
++ return true;
++
++ res = kdbus_policy_query(&conn->ep->bus->policy_db, conn_creds,
++ name, hash);
++ return res >= KDBUS_POLICY_OWN;
++}
++
++/**
++ * kdbus_conn_policy_talk() - verify a connection can talk to a given peer
++ * @conn: Connection that tries to talk
++ * @conn_creds: Credentials of @conn to use for policy check
++ * @to: Connection that is talked to
++ *
++ * This verifies that @conn is allowed to talk to @to.
++ *
++ * Return: true if allowed, false if not.
++ */
++bool kdbus_conn_policy_talk(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ struct kdbus_conn *to)
++{
++ if (!conn_creds)
++ conn_creds = conn->cred;
++
++ if (conn->ep->user &&
++ !kdbus_conn_policy_query_all(conn, conn_creds, &conn->ep->policy_db,
++ to, KDBUS_POLICY_TALK))
++ return false;
++
++ if (conn->privileged)
++ return true;
++ if (uid_eq(conn_creds->euid, to->cred->uid))
++ return true;
++
++ return kdbus_conn_policy_query_all(conn, conn_creds,
++ &conn->ep->bus->policy_db, to,
++ KDBUS_POLICY_TALK);
++}
++
++/**
++ * kdbus_conn_policy_see_name_unlocked() - verify a connection can see a given
++ * name
++ * @conn: Connection
++ * @conn_creds: Credentials of @conn to use for policy check
++ * @name: Name
++ *
++ * This verifies that @conn is allowed to see the well-known name @name. Caller
++ * must hold policy-lock.
++ *
++ * Return: true if allowed, false if not.
++ */
++bool kdbus_conn_policy_see_name_unlocked(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ const char *name)
++{
++ int res;
++
++ /*
++ * By default, all names are visible on a bus. SEE policies can only be
++ * installed on custom endpoints, where by default no name is visible.
++ */
++ if (!conn->ep->user)
++ return true;
++
++ res = kdbus_policy_query_unlocked(&conn->ep->policy_db,
++ conn_creds ? : conn->cred,
++ name, kdbus_strhash(name));
++ return res >= KDBUS_POLICY_SEE;
++}
++
++static bool kdbus_conn_policy_see_name(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ const char *name)
++{
++ bool res;
++
++ down_read(&conn->ep->policy_db.entries_rwlock);
++ res = kdbus_conn_policy_see_name_unlocked(conn, conn_creds, name);
++ up_read(&conn->ep->policy_db.entries_rwlock);
++
++ return res;
++}
++
++static bool kdbus_conn_policy_see(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ struct kdbus_conn *whom)
++{
++ /*
++ * By default, all names are visible on a bus, so a connection can
++ * always see other connections. SEE policies can only be installed on
++ * custom endpoints, where by default no name is visible and we hide
++ * peers from each other, unless you see at least _one_ name of the
++ * peer.
++ */
++ return !conn->ep->user ||
++ kdbus_conn_policy_query_all(conn, conn_creds,
++ &conn->ep->policy_db, whom,
++ KDBUS_POLICY_SEE);
++}
++
++/**
++ * kdbus_conn_policy_see_notification() - verify a connection is allowed to
++ * receive a given kernel notification
++ * @conn: Connection
++ * @conn_creds: Credentials of @conn to use for policy check
++ * @kmsg: The message carrying the notification
++ *
++ * This checks whether @conn is allowed to see the kernel notification @kmsg.
++ *
++ * Return: true if allowed, false if not.
++ */
++bool kdbus_conn_policy_see_notification(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ const struct kdbus_kmsg *kmsg)
++{
++ if (WARN_ON(kmsg->msg.src_id != KDBUS_SRC_ID_KERNEL))
++ return false;
++
++ /*
++ * Depending on the notification type, broadcasted kernel notifications
++ * have to be filtered:
++ *
++ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE}: This notification is forwarded
++ * to a peer if, and only if, that peer can see the name this
++ * notification is for.
++ *
++ * KDBUS_ITEM_ID_{ADD,REMOVE}: As new peers cannot have names, and all
++ * names are dropped before a peer is removed, those notifications
++ * cannot be seen on custom endpoints. Thus, we only pass them
++ * through on default endpoints.
++ */
++
++ switch (kmsg->notify_type) {
++ case KDBUS_ITEM_NAME_ADD:
++ case KDBUS_ITEM_NAME_REMOVE:
++ case KDBUS_ITEM_NAME_CHANGE:
++ return kdbus_conn_policy_see_name(conn, conn_creds,
++ kmsg->notify_name);
++
++ case KDBUS_ITEM_ID_ADD:
++ case KDBUS_ITEM_ID_REMOVE:
++ return !conn->ep->user;
++
++ default:
++ WARN(1, "Invalid type for notification broadcast: %llu\n",
++ (unsigned long long)kmsg->notify_type);
++ return false;
++ }
++}
++
++/**
++ * kdbus_cmd_hello() - handle KDBUS_CMD_HELLO
++ * @ep: Endpoint to operate on
++ * @privileged: Whether the caller is privileged
++ * @argp: Command payload
++ *
++ * Return: Newly created connection on success, ERR_PTR on failure.
++ */
++struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, bool privileged,
++ void __user *argp)
++{
++ struct kdbus_cmd_hello *cmd;
++ struct kdbus_conn *c = NULL;
++ const char *item_name;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_NAME },
++ { .type = KDBUS_ITEM_CREDS },
++ { .type = KDBUS_ITEM_PIDS },
++ { .type = KDBUS_ITEM_SECLABEL },
++ { .type = KDBUS_ITEM_CONN_DESCRIPTION },
++ { .type = KDBUS_ITEM_POLICY_ACCESS, .multiple = true },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_HELLO_ACCEPT_FD |
++ KDBUS_HELLO_ACTIVATOR |
++ KDBUS_HELLO_POLICY_HOLDER |
++ KDBUS_HELLO_MONITOR,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret < 0)
++ return ERR_PTR(ret);
++ if (ret > 0)
++ return NULL;
++
++ item_name = argv[1].item ? argv[1].item->str : NULL;
++
++ c = kdbus_conn_new(ep, privileged, cmd, item_name,
++ argv[2].item ? &argv[2].item->creds : NULL,
++ argv[3].item ? &argv[3].item->pids : NULL,
++ argv[4].item ? argv[4].item->str : NULL,
++ argv[5].item ? argv[5].item->str : NULL);
++ if (IS_ERR(c)) {
++ ret = PTR_ERR(c);
++ c = NULL;
++ goto exit;
++ }
++
++ ret = kdbus_conn_connect(c, item_name);
++ if (ret < 0)
++ goto exit;
++
++ if (kdbus_conn_is_activator(c) || kdbus_conn_is_policy_holder(c)) {
++ ret = kdbus_conn_acquire(c);
++ if (ret < 0)
++ goto exit;
++
++ ret = kdbus_policy_set(&c->ep->bus->policy_db, args.items,
++ args.items_size, 1,
++ kdbus_conn_is_policy_holder(c), c);
++ kdbus_conn_release(c);
++ if (ret < 0)
++ goto exit;
++ }
++
++ if (copy_to_user(argp, cmd, sizeof(*cmd)))
++ ret = -EFAULT;
++
++exit:
++ ret = kdbus_args_clear(&args, ret);
++ if (ret < 0) {
++ if (c) {
++ kdbus_conn_disconnect(c, false);
++ kdbus_conn_unref(c);
++ }
++ return ERR_PTR(ret);
++ }
++ return c;
++}
++
++/**
++ * kdbus_cmd_byebye_unlocked() - handle KDBUS_CMD_BYEBYE
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * The caller must not hold any active reference to @conn or this will deadlock.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_byebye_unlocked(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_cmd *cmd;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ if (!kdbus_conn_is_ordinary(conn))
++ return -EOPNOTSUPP;
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ ret = kdbus_conn_disconnect(conn, true);
++ return kdbus_args_clear(&args, ret);
++}
++
++/**
++ * kdbus_cmd_conn_info() - handle KDBUS_CMD_CONN_INFO
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_meta_conn *conn_meta = NULL;
++ struct kdbus_pool_slice *slice = NULL;
++ struct kdbus_name_entry *entry = NULL;
++ struct kdbus_conn *owner_conn = NULL;
++ struct kdbus_info info = {};
++ struct kdbus_cmd_info *cmd;
++ struct kdbus_bus *bus = conn->ep->bus;
++ struct kvec kvec;
++ size_t meta_size;
++ const char *name;
++ u64 attach_flags;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_NAME },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ /* registry must be held throughout lookup *and* collecting data */
++ down_read(&bus->name_registry->rwlock);
++
++ ret = kdbus_sanitize_attach_flags(cmd->attach_flags, &attach_flags);
++ if (ret < 0)
++ goto exit;
++
++ name = argv[1].item ? argv[1].item->str : NULL;
++
++ if (name) {
++ entry = kdbus_name_lookup_unlocked(bus->name_registry, name);
++ if (!entry || !entry->conn ||
++ !kdbus_conn_policy_see_name(conn, current_cred(), name) ||
++ (cmd->id != 0 && entry->conn->id != cmd->id)) {
++ /* pretend a name doesn't exist if you cannot see it */
++ ret = -ESRCH;
++ goto exit;
++ }
++
++ owner_conn = kdbus_conn_ref(entry->conn);
++ } else if (cmd->id > 0) {
++ owner_conn = kdbus_bus_find_conn_by_id(bus, cmd->id);
++ if (!owner_conn || !kdbus_conn_policy_see(conn, current_cred(),
++ owner_conn)) {
++ /* pretend an id doesn't exist if you cannot see it */
++ ret = -ENXIO;
++ goto exit;
++ }
++ } else {
++ ret = -EINVAL;
++ goto exit;
++ }
++
++ info.id = owner_conn->id;
++ info.flags = owner_conn->flags;
++ kdbus_kvec_set(&kvec, &info, sizeof(info), &info.size);
++
++ attach_flags &= atomic64_read(&owner_conn->attach_flags_send);
++
++ conn_meta = kdbus_meta_conn_new();
++ if (IS_ERR(conn_meta)) {
++ ret = PTR_ERR(conn_meta);
++ conn_meta = NULL;
++ goto exit;
++ }
++
++ ret = kdbus_meta_conn_collect(conn_meta, NULL, owner_conn,
++ attach_flags);
++ if (ret < 0)
++ goto exit;
++
++ ret = kdbus_meta_export_prepare(owner_conn->meta, conn_meta,
++ &attach_flags, &meta_size);
++ if (ret < 0)
++ goto exit;
++
++ slice = kdbus_pool_slice_alloc(conn->pool,
++ info.size + meta_size, false);
++ if (IS_ERR(slice)) {
++ ret = PTR_ERR(slice);
++ slice = NULL;
++ goto exit;
++ }
++
++ ret = kdbus_meta_export(owner_conn->meta, conn_meta, attach_flags,
++ slice, sizeof(info), &meta_size);
++ if (ret < 0)
++ goto exit;
++
++ info.size += meta_size;
++
++ ret = kdbus_pool_slice_copy_kvec(slice, 0, &kvec, 1, sizeof(info));
++ if (ret < 0)
++ goto exit;
++
++ kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->info_size);
++
++ if (kdbus_member_set_user(&cmd->offset, argp, typeof(*cmd), offset) ||
++ kdbus_member_set_user(&cmd->info_size, argp,
++ typeof(*cmd), info_size)) {
++ ret = -EFAULT;
++ goto exit;
++ }
++
++ ret = 0;
++
++exit:
++ up_read(&bus->name_registry->rwlock);
++ kdbus_pool_slice_release(slice);
++ kdbus_meta_conn_unref(conn_meta);
++ kdbus_conn_unref(owner_conn);
++ return kdbus_args_clear(&args, ret);
++}
++
++/**
++ * kdbus_cmd_update() - handle KDBUS_CMD_UPDATE
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_update(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_bus *bus = conn->ep->bus;
++ struct kdbus_item *item_policy;
++ u64 *item_attach_send = NULL;
++ u64 *item_attach_recv = NULL;
++ struct kdbus_cmd *cmd;
++ u64 attach_send;
++ u64 attach_recv;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_ATTACH_FLAGS_SEND },
++ { .type = KDBUS_ITEM_ATTACH_FLAGS_RECV },
++ { .type = KDBUS_ITEM_NAME, .multiple = true },
++ { .type = KDBUS_ITEM_POLICY_ACCESS, .multiple = true },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ item_attach_send = argv[1].item ? &argv[1].item->data64[0] : NULL;
++ item_attach_recv = argv[2].item ? &argv[2].item->data64[0] : NULL;
++ item_policy = argv[3].item ? : argv[4].item;
++
++ if (item_attach_send) {
++ if (!kdbus_conn_is_ordinary(conn) &&
++ !kdbus_conn_is_monitor(conn)) {
++ ret = -EOPNOTSUPP;
++ goto exit;
++ }
++
++ ret = kdbus_sanitize_attach_flags(*item_attach_send,
++ &attach_send);
++ if (ret < 0)
++ goto exit;
++
++ if (bus->attach_flags_req & ~attach_send) {
++ ret = -EINVAL;
++ goto exit;
++ }
++ }
++
++ if (item_attach_recv) {
++ if (!kdbus_conn_is_ordinary(conn) &&
++ !kdbus_conn_is_monitor(conn) &&
++ !kdbus_conn_is_activator(conn)) {
++ ret = -EOPNOTSUPP;
++ goto exit;
++ }
++
++ ret = kdbus_sanitize_attach_flags(*item_attach_recv,
++ &attach_recv);
++ if (ret < 0)
++ goto exit;
++ }
++
++ if (item_policy && !kdbus_conn_is_policy_holder(conn)) {
++ ret = -EOPNOTSUPP;
++ goto exit;
++ }
++
++ /* now that we verified the input, update the connection */
++
++ if (item_policy) {
++ ret = kdbus_policy_set(&conn->ep->bus->policy_db, cmd->items,
++ KDBUS_ITEMS_SIZE(cmd, items),
++ 1, true, conn);
++ if (ret < 0)
++ goto exit;
++ }
++
++ if (item_attach_send)
++ atomic64_set(&conn->attach_flags_send, attach_send);
++
++ if (item_attach_recv)
++ atomic64_set(&conn->attach_flags_recv, attach_recv);
++
++exit:
++ return kdbus_args_clear(&args, ret);
++}
++
++/**
++ * kdbus_cmd_send() - handle KDBUS_CMD_SEND
++ * @conn: connection to operate on
++ * @f: file this command was called on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_send(struct kdbus_conn *conn, struct file *f, void __user *argp)
++{
++ struct kdbus_cmd_send *cmd;
++ struct kdbus_kmsg *kmsg = NULL;
++ struct file *cancel_fd = NULL;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_CANCEL_FD },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_SEND_SYNC_REPLY,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ if (!kdbus_conn_is_ordinary(conn))
++ return -EOPNOTSUPP;
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ cmd->reply.return_flags = 0;
++ kdbus_pool_publish_empty(conn->pool, &cmd->reply.offset,
++ &cmd->reply.msg_size);
++
++ if (argv[1].item) {
++ cancel_fd = fget(argv[1].item->fds[0]);
++ if (!cancel_fd) {
++ ret = -EBADF;
++ goto exit;
++ }
++
++ if (!cancel_fd->f_op->poll) {
++ ret = -EINVAL;
++ goto exit;
++ }
++ }
++
++ kmsg = kdbus_kmsg_new_from_cmd(conn, cmd);
++ if (IS_ERR(kmsg)) {
++ ret = PTR_ERR(kmsg);
++ kmsg = NULL;
++ goto exit;
++ }
++
++ if (kmsg->msg.dst_id == KDBUS_DST_ID_BROADCAST) {
++ down_read(&conn->ep->bus->name_registry->rwlock);
++ kdbus_bus_broadcast(conn->ep->bus, conn, kmsg);
++ up_read(&conn->ep->bus->name_registry->rwlock);
++ } else if (cmd->flags & KDBUS_SEND_SYNC_REPLY) {
++ struct kdbus_reply *r;
++ ktime_t exp;
++
++ exp = ns_to_ktime(kmsg->msg.timeout_ns);
++ r = kdbus_conn_call(conn, kmsg, exp);
++ if (IS_ERR(r)) {
++ ret = PTR_ERR(r);
++ goto exit;
++ }
++
++ ret = kdbus_conn_wait_reply(conn, cmd, f, cancel_fd, r, exp);
++ kdbus_reply_unref(r);
++ if (ret < 0)
++ goto exit;
++ } else if ((kmsg->msg.flags & KDBUS_MSG_EXPECT_REPLY) ||
++ kmsg->msg.cookie_reply == 0) {
++ ret = kdbus_conn_unicast(conn, kmsg);
++ if (ret < 0)
++ goto exit;
++ } else {
++ ret = kdbus_conn_reply(conn, kmsg);
++ if (ret < 0)
++ goto exit;
++ }
++
++ if (kdbus_member_set_user(&cmd->reply, argp, typeof(*cmd), reply))
++ ret = -EFAULT;
++
++exit:
++ if (cancel_fd)
++ fput(cancel_fd);
++ kdbus_kmsg_free(kmsg);
++ return kdbus_args_clear(&args, ret);
++}
++
++/**
++ * kdbus_cmd_recv() - handle KDBUS_CMD_RECV
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_recv(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_queue_entry *entry;
++ struct kdbus_cmd_recv *cmd;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_RECV_PEEK |
++ KDBUS_RECV_DROP |
++ KDBUS_RECV_USE_PRIORITY,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ if (!kdbus_conn_is_ordinary(conn) &&
++ !kdbus_conn_is_monitor(conn) &&
++ !kdbus_conn_is_activator(conn))
++ return -EOPNOTSUPP;
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ cmd->dropped_msgs = 0;
++ cmd->msg.return_flags = 0;
++ kdbus_pool_publish_empty(conn->pool, &cmd->msg.offset,
++ &cmd->msg.msg_size);
++
++ /* DROP+priority is not realiably, so prevent it */
++ if ((cmd->flags & KDBUS_RECV_DROP) &&
++ (cmd->flags & KDBUS_RECV_USE_PRIORITY)) {
++ ret = -EINVAL;
++ goto exit;
++ }
++
++ mutex_lock(&conn->lock);
++
++ entry = kdbus_queue_peek(&conn->queue, cmd->priority,
++ cmd->flags & KDBUS_RECV_USE_PRIORITY);
++ if (!entry) {
++ mutex_unlock(&conn->lock);
++ ret = -EAGAIN;
++ } else if (cmd->flags & KDBUS_RECV_DROP) {
++ struct kdbus_reply *reply = kdbus_reply_ref(entry->reply);
++
++ kdbus_queue_entry_free(entry);
++
++ mutex_unlock(&conn->lock);
++
++ if (reply) {
++ mutex_lock(&reply->reply_dst->lock);
++ if (!list_empty(&reply->entry)) {
++ kdbus_reply_unlink(reply);
++ if (reply->sync)
++ kdbus_sync_reply_wakeup(reply, -EPIPE);
++ else
++ kdbus_notify_reply_dead(conn->ep->bus,
++ reply->reply_dst->id,
++ reply->cookie);
++ }
++ mutex_unlock(&reply->reply_dst->lock);
++ kdbus_notify_flush(conn->ep->bus);
++ }
++
++ kdbus_reply_unref(reply);
++ } else {
++ bool install_fds;
++
++ /*
++ * PEEK just returns the location of the next message. Do not
++ * install FDs nor memfds nor anything else. The only
++ * information of interest should be the message header and
++ * metadata. Any FD numbers in the payload is undefined for
++ * PEEK'ed messages.
++ * Also make sure to never install fds into a connection that
++ * has refused to receive any. Ordinary connections will not get
++ * messages with FDs queued (the receiver will get -ECOMM), but
++ * eavesdroppers might.
++ */
++ install_fds = (conn->flags & KDBUS_HELLO_ACCEPT_FD) &&
++ !(cmd->flags & KDBUS_RECV_PEEK);
++
++ ret = kdbus_queue_entry_install(entry,
++ &cmd->msg.return_flags,
++ install_fds);
++ if (ret < 0) {
++ mutex_unlock(&conn->lock);
++ goto exit;
++ }
++
++ kdbus_pool_slice_publish(entry->slice, &cmd->msg.offset,
++ &cmd->msg.msg_size);
++
++ if (!(cmd->flags & KDBUS_RECV_PEEK))
++ kdbus_queue_entry_free(entry);
++
++ mutex_unlock(&conn->lock);
++ }
++
++ cmd->dropped_msgs = atomic_xchg(&conn->lost_count, 0);
++ if (cmd->dropped_msgs > 0)
++ cmd->return_flags |= KDBUS_RECV_RETURN_DROPPED_MSGS;
++
++ if (kdbus_member_set_user(&cmd->msg, argp, typeof(*cmd), msg) ||
++ kdbus_member_set_user(&cmd->dropped_msgs, argp, typeof(*cmd),
++ dropped_msgs))
++ ret = -EFAULT;
++
++exit:
++ return kdbus_args_clear(&args, ret);
++}
++
++/**
++ * kdbus_cmd_free() - handle KDBUS_CMD_FREE
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_free(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_cmd_free *cmd;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ if (!kdbus_conn_is_ordinary(conn) &&
++ !kdbus_conn_is_monitor(conn) &&
++ !kdbus_conn_is_activator(conn))
++ return -EOPNOTSUPP;
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ ret = kdbus_pool_release_offset(conn->pool, cmd->offset);
++
++ return kdbus_args_clear(&args, ret);
++}
+diff --git a/ipc/kdbus/connection.h b/ipc/kdbus/connection.h
+new file mode 100644
+index 0000000..d1ffe90
+--- /dev/null
++++ b/ipc/kdbus/connection.h
+@@ -0,0 +1,257 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_CONNECTION_H
++#define __KDBUS_CONNECTION_H
++
++#include <linux/atomic.h>
++#include <linux/kref.h>
++#include <linux/lockdep.h>
++#include <linux/path.h>
++
++#include "limits.h"
++#include "metadata.h"
++#include "pool.h"
++#include "queue.h"
++#include "util.h"
++
++#define KDBUS_HELLO_SPECIAL_CONN (KDBUS_HELLO_ACTIVATOR | \
++ KDBUS_HELLO_POLICY_HOLDER | \
++ KDBUS_HELLO_MONITOR)
++
++struct kdbus_quota;
++struct kdbus_kmsg;
++
++/**
++ * struct kdbus_conn - connection to a bus
++ * @kref: Reference count
++ * @active: Active references to the connection
++ * @id: Connection ID
++ * @flags: KDBUS_HELLO_* flags
++ * @attach_flags_send: KDBUS_ATTACH_* flags for sending
++ * @attach_flags_recv: KDBUS_ATTACH_* flags for receiving
++ * @description: Human-readable connection description, used for
++ * debugging. This field is only set when the
++ * connection is created.
++ * @ep: The endpoint this connection belongs to
++ * @lock: Connection data lock
++ * @hentry: Entry in ID <-> connection map
++ * @ep_entry: Entry in endpoint
++ * @monitor_entry: Entry in monitor, if the connection is a monitor
++ * @reply_list: List of connections this connection should
++ * reply to
++ * @work: Delayed work to handle timeouts
++ * activator for
++ * @match_db: Subscription filter to broadcast messages
++ * @meta: Active connection creator's metadata/credentials,
++ * either from the handle or from HELLO
++ * @pool: The user's buffer to receive messages
++ * @user: Owner of the connection
++ * @cred: The credentials of the connection at creation time
++ * @name_count: Number of owned well-known names
++ * @request_count: Number of pending requests issued by this
++ * connection that are waiting for replies from
++ * other peers
++ * @lost_count: Number of lost broadcast messages
++ * @wait: Wake up this endpoint
++ * @queue: The message queue associated with this connection
++ * @quota: Array of per-user quota indexed by user->id
++ * @n_quota: Number of elements in quota array
++ * @activator_of: Well-known name entry this connection acts as an
++ * @names_list: List of well-known names
++ * @names_queue_list: Well-known names this connection waits for
++ * @privileged: Whether this connection is privileged on the bus
++ * @faked_meta: Whether the metadata was faked on HELLO
++ */
++struct kdbus_conn {
++ struct kref kref;
++ atomic_t active;
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++ struct lockdep_map dep_map;
++#endif
++ u64 id;
++ u64 flags;
++ atomic64_t attach_flags_send;
++ atomic64_t attach_flags_recv;
++ const char *description;
++ struct kdbus_ep *ep;
++ struct mutex lock;
++ struct hlist_node hentry;
++ struct list_head ep_entry;
++ struct list_head monitor_entry;
++ struct list_head reply_list;
++ struct delayed_work work;
++ struct kdbus_match_db *match_db;
++ struct kdbus_meta_proc *meta;
++ struct kdbus_pool *pool;
++ struct kdbus_user *user;
++ const struct cred *cred;
++ atomic_t name_count;
++ atomic_t request_count;
++ atomic_t lost_count;
++ wait_queue_head_t wait;
++ struct kdbus_queue queue;
++
++ struct kdbus_quota *quota;
++ unsigned int n_quota;
++
++ /* protected by registry->rwlock */
++ struct kdbus_name_entry *activator_of;
++ struct list_head names_list;
++ struct list_head names_queue_list;
++
++ bool privileged:1;
++ bool faked_meta:1;
++};
++
++struct kdbus_conn *kdbus_conn_ref(struct kdbus_conn *conn);
++struct kdbus_conn *kdbus_conn_unref(struct kdbus_conn *conn);
++bool kdbus_conn_active(const struct kdbus_conn *conn);
++int kdbus_conn_acquire(struct kdbus_conn *conn);
++void kdbus_conn_release(struct kdbus_conn *conn);
++int kdbus_conn_disconnect(struct kdbus_conn *conn, bool ensure_queue_empty);
++bool kdbus_conn_has_name(struct kdbus_conn *conn, const char *name);
++int kdbus_conn_quota_inc(struct kdbus_conn *c, struct kdbus_user *u,
++ size_t memory, size_t fds);
++void kdbus_conn_quota_dec(struct kdbus_conn *c, struct kdbus_user *u,
++ size_t memory, size_t fds);
++void kdbus_conn_lost_message(struct kdbus_conn *c);
++int kdbus_conn_entry_insert(struct kdbus_conn *conn_src,
++ struct kdbus_conn *conn_dst,
++ const struct kdbus_kmsg *kmsg,
++ struct kdbus_reply *reply);
++void kdbus_conn_move_messages(struct kdbus_conn *conn_dst,
++ struct kdbus_conn *conn_src,
++ u64 name_id);
++
++/* policy */
++bool kdbus_conn_policy_own_name(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ const char *name);
++bool kdbus_conn_policy_talk(struct kdbus_conn *conn,
++ const struct cred *conn_creds,
++ struct kdbus_conn *to);
++bool kdbus_conn_policy_see_name_unlocked(struct kdbus_conn *conn,
++ const struct cred *curr_creds,
++ const char *name);
++bool kdbus_conn_policy_see_notification(struct kdbus_conn *conn,
++ const struct cred *curr_creds,
++ const struct kdbus_kmsg *kmsg);
++
++/* command dispatcher */
++struct kdbus_conn *kdbus_cmd_hello(struct kdbus_ep *ep, bool privileged,
++ void __user *argp);
++int kdbus_cmd_byebye_unlocked(struct kdbus_conn *conn, void __user *argp);
++int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp);
++int kdbus_cmd_update(struct kdbus_conn *conn, void __user *argp);
++int kdbus_cmd_send(struct kdbus_conn *conn, struct file *f, void __user *argp);
++int kdbus_cmd_recv(struct kdbus_conn *conn, void __user *argp);
++int kdbus_cmd_free(struct kdbus_conn *conn, void __user *argp);
++
++/**
++ * kdbus_conn_is_ordinary() - Check if connection is ordinary
++ * @conn: The connection to check
++ *
++ * Return: Non-zero if the connection is an ordinary connection
++ */
++static inline int kdbus_conn_is_ordinary(const struct kdbus_conn *conn)
++{
++ return !(conn->flags & KDBUS_HELLO_SPECIAL_CONN);
++}
++
++/**
++ * kdbus_conn_is_activator() - Check if connection is an activator
++ * @conn: The connection to check
++ *
++ * Return: Non-zero if the connection is an activator
++ */
++static inline int kdbus_conn_is_activator(const struct kdbus_conn *conn)
++{
++ return conn->flags & KDBUS_HELLO_ACTIVATOR;
++}
++
++/**
++ * kdbus_conn_is_policy_holder() - Check if connection is a policy holder
++ * @conn: The connection to check
++ *
++ * Return: Non-zero if the connection is a policy holder
++ */
++static inline int kdbus_conn_is_policy_holder(const struct kdbus_conn *conn)
++{
++ return conn->flags & KDBUS_HELLO_POLICY_HOLDER;
++}
++
++/**
++ * kdbus_conn_is_monitor() - Check if connection is a monitor
++ * @conn: The connection to check
++ *
++ * Return: Non-zero if the connection is a monitor
++ */
++static inline int kdbus_conn_is_monitor(const struct kdbus_conn *conn)
++{
++ return conn->flags & KDBUS_HELLO_MONITOR;
++}
++
++/**
++ * kdbus_conn_lock2() - Lock two connections
++ * @a: connection A to lock or NULL
++ * @b: connection B to lock or NULL
++ *
++ * Lock two connections at once. As we need to have a stable locking order, we
++ * always lock the connection with lower memory address first.
++ */
++static inline void kdbus_conn_lock2(struct kdbus_conn *a, struct kdbus_conn *b)
++{
++ if (a < b) {
++ if (a)
++ mutex_lock(&a->lock);
++ if (b && b != a)
++ mutex_lock_nested(&b->lock, !!a);
++ } else {
++ if (b)
++ mutex_lock(&b->lock);
++ if (a && a != b)
++ mutex_lock_nested(&a->lock, !!b);
++ }
++}
++
++/**
++ * kdbus_conn_unlock2() - Unlock two connections
++ * @a: connection A to unlock or NULL
++ * @b: connection B to unlock or NULL
++ *
++ * Unlock two connections at once. See kdbus_conn_lock2().
++ */
++static inline void kdbus_conn_unlock2(struct kdbus_conn *a,
++ struct kdbus_conn *b)
++{
++ if (a)
++ mutex_unlock(&a->lock);
++ if (b && b != a)
++ mutex_unlock(&b->lock);
++}
++
++/**
++ * kdbus_conn_assert_active() - lockdep assert on active lock
++ * @conn: connection that shall be active
++ *
++ * This verifies via lockdep that the caller holds an active reference to the
++ * given connection.
++ */
++static inline void kdbus_conn_assert_active(struct kdbus_conn *conn)
++{
++ lockdep_assert_held(conn);
++}
++
++#endif
+diff --git a/ipc/kdbus/domain.c b/ipc/kdbus/domain.c
+new file mode 100644
+index 0000000..ac9f760
+--- /dev/null
++++ b/ipc/kdbus/domain.c
+@@ -0,0 +1,296 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/fs.h>
++#include <linux/idr.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/sched.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++
++#include "bus.h"
++#include "domain.h"
++#include "handle.h"
++#include "item.h"
++#include "limits.h"
++#include "util.h"
++
++static void kdbus_domain_control_free(struct kdbus_node *node)
++{
++ kfree(node);
++}
++
++static struct kdbus_node *kdbus_domain_control_new(struct kdbus_domain *domain,
++ unsigned int access)
++{
++ struct kdbus_node *node;
++ int ret;
++
++ node = kzalloc(sizeof(*node), GFP_KERNEL);
++ if (!node)
++ return ERR_PTR(-ENOMEM);
++
++ kdbus_node_init(node, KDBUS_NODE_CONTROL);
++
++ node->free_cb = kdbus_domain_control_free;
++ node->mode = domain->node.mode;
++ node->mode = S_IRUSR | S_IWUSR;
++ if (access & (KDBUS_MAKE_ACCESS_GROUP | KDBUS_MAKE_ACCESS_WORLD))
++ node->mode |= S_IRGRP | S_IWGRP;
++ if (access & KDBUS_MAKE_ACCESS_WORLD)
++ node->mode |= S_IROTH | S_IWOTH;
++
++ ret = kdbus_node_link(node, &domain->node, "control");
++ if (ret < 0)
++ goto exit_free;
++
++ return node;
++
++exit_free:
++ kdbus_node_deactivate(node);
++ kdbus_node_unref(node);
++ return ERR_PTR(ret);
++}
++
++static void kdbus_domain_free(struct kdbus_node *node)
++{
++ struct kdbus_domain *domain =
++ container_of(node, struct kdbus_domain, node);
++
++ put_user_ns(domain->user_namespace);
++ ida_destroy(&domain->user_ida);
++ idr_destroy(&domain->user_idr);
++ kfree(domain);
++}
++
++/**
++ * kdbus_domain_new() - create a new domain
++ * @access: The access mode for this node (KDBUS_MAKE_ACCESS_*)
++ *
++ * Return: a new kdbus_domain on success, ERR_PTR on failure
++ */
++struct kdbus_domain *kdbus_domain_new(unsigned int access)
++{
++ struct kdbus_domain *d;
++ int ret;
++
++ d = kzalloc(sizeof(*d), GFP_KERNEL);
++ if (!d)
++ return ERR_PTR(-ENOMEM);
++
++ kdbus_node_init(&d->node, KDBUS_NODE_DOMAIN);
++
++ d->node.free_cb = kdbus_domain_free;
++ d->node.mode = S_IRUSR | S_IXUSR;
++ if (access & (KDBUS_MAKE_ACCESS_GROUP | KDBUS_MAKE_ACCESS_WORLD))
++ d->node.mode |= S_IRGRP | S_IXGRP;
++ if (access & KDBUS_MAKE_ACCESS_WORLD)
++ d->node.mode |= S_IROTH | S_IXOTH;
++
++ mutex_init(&d->lock);
++ idr_init(&d->user_idr);
++ ida_init(&d->user_ida);
++
++ /* Pin user namespace so we can guarantee domain-unique bus * names. */
++ d->user_namespace = get_user_ns(current_user_ns());
++
++ ret = kdbus_node_link(&d->node, NULL, NULL);
++ if (ret < 0)
++ goto exit_unref;
++
++ return d;
++
++exit_unref:
++ kdbus_node_deactivate(&d->node);
++ kdbus_node_unref(&d->node);
++ return ERR_PTR(ret);
++}
++
++/**
++ * kdbus_domain_ref() - take a domain reference
++ * @domain: Domain
++ *
++ * Return: the domain itself
++ */
++struct kdbus_domain *kdbus_domain_ref(struct kdbus_domain *domain)
++{
++ if (domain)
++ kdbus_node_ref(&domain->node);
++ return domain;
++}
++
++/**
++ * kdbus_domain_unref() - drop a domain reference
++ * @domain: Domain
++ *
++ * When the last reference is dropped, the domain internal structure
++ * is freed.
++ *
++ * Return: NULL
++ */
++struct kdbus_domain *kdbus_domain_unref(struct kdbus_domain *domain)
++{
++ if (domain)
++ kdbus_node_unref(&domain->node);
++ return NULL;
++}
++
++/**
++ * kdbus_domain_populate() - populate static domain nodes
++ * @domain: domain to populate
++ * @access: KDBUS_MAKE_ACCESS_* access restrictions for new nodes
++ *
++ * Allocate and activate static sub-nodes of the given domain. This will fail if
++ * you call it on a non-active node or if the domain was already populated.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_domain_populate(struct kdbus_domain *domain, unsigned int access)
++{
++ struct kdbus_node *control;
++
++ /*
++ * Create a control-node for this domain. We drop our own reference
++ * immediately, effectively causing the node to be deactivated and
++ * released when the parent domain is.
++ */
++ control = kdbus_domain_control_new(domain, access);
++ if (IS_ERR(control))
++ return PTR_ERR(control);
++
++ kdbus_node_activate(control);
++ kdbus_node_unref(control);
++ return 0;
++}
++
++/**
++ * kdbus_user_lookup() - lookup a kdbus_user object
++ * @domain: domain of the user
++ * @uid: uid of the user; INVALID_UID for an anon user
++ *
++ * Lookup the kdbus user accounting object for the given domain. If INVALID_UID
++ * is passed, a new anonymous user is created which is private to the caller.
++ *
++ * Return: The user object is returned, ERR_PTR on failure.
++ */
++struct kdbus_user *kdbus_user_lookup(struct kdbus_domain *domain, kuid_t uid)
++{
++ struct kdbus_user *u = NULL, *old = NULL;
++ int ret;
++
++ mutex_lock(&domain->lock);
++
++ if (uid_valid(uid)) {
++ old = idr_find(&domain->user_idr, __kuid_val(uid));
++ /*
++ * If the object is about to be destroyed, ignore it and
++ * replace the slot in the IDR later on.
++ */
++ if (old && kref_get_unless_zero(&old->kref)) {
++ mutex_unlock(&domain->lock);
++ return old;
++ }
++ }
++
++ u = kzalloc(sizeof(*u), GFP_KERNEL);
++ if (!u) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ kref_init(&u->kref);
++ u->domain = kdbus_domain_ref(domain);
++ u->uid = uid;
++ atomic_set(&u->buses, 0);
++ atomic_set(&u->connections, 0);
++
++ if (uid_valid(uid)) {
++ if (old) {
++ idr_replace(&domain->user_idr, u, __kuid_val(uid));
++ old->uid = INVALID_UID; /* mark old as removed */
++ } else {
++ ret = idr_alloc(&domain->user_idr, u, __kuid_val(uid),
++ __kuid_val(uid) + 1, GFP_KERNEL);
++ if (ret < 0)
++ goto exit;
++ }
++ }
++
++ /*
++ * Allocate the smallest possible index for this user; used
++ * in arrays for accounting user quota in receiver queues.
++ */
++ ret = ida_simple_get(&domain->user_ida, 1, 0, GFP_KERNEL);
++ if (ret < 0)
++ goto exit;
++
++ u->id = ret;
++ mutex_unlock(&domain->lock);
++ return u;
++
++exit:
++ if (u) {
++ if (uid_valid(u->uid))
++ idr_remove(&domain->user_idr, __kuid_val(u->uid));
++ kdbus_domain_unref(u->domain);
++ kfree(u);
++ }
++ mutex_unlock(&domain->lock);
++ return ERR_PTR(ret);
++}
++
++static void __kdbus_user_free(struct kref *kref)
++{
++ struct kdbus_user *user = container_of(kref, struct kdbus_user, kref);
++
++ WARN_ON(atomic_read(&user->buses) > 0);
++ WARN_ON(atomic_read(&user->connections) > 0);
++
++ mutex_lock(&user->domain->lock);
++ ida_simple_remove(&user->domain->user_ida, user->id);
++ if (uid_valid(user->uid))
++ idr_remove(&user->domain->user_idr, __kuid_val(user->uid));
++ mutex_unlock(&user->domain->lock);
++
++ kdbus_domain_unref(user->domain);
++ kfree(user);
++}
++
++/**
++ * kdbus_user_ref() - take a user reference
++ * @u: User
++ *
++ * Return: @u is returned
++ */
++struct kdbus_user *kdbus_user_ref(struct kdbus_user *u)
++{
++ if (u)
++ kref_get(&u->kref);
++ return u;
++}
++
++/**
++ * kdbus_user_unref() - drop a user reference
++ * @u: User
++ *
++ * Return: NULL
++ */
++struct kdbus_user *kdbus_user_unref(struct kdbus_user *u)
++{
++ if (u)
++ kref_put(&u->kref, __kdbus_user_free);
++ return NULL;
++}
+diff --git a/ipc/kdbus/domain.h b/ipc/kdbus/domain.h
+new file mode 100644
+index 0000000..447a2bd
+--- /dev/null
++++ b/ipc/kdbus/domain.h
+@@ -0,0 +1,77 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_DOMAIN_H
++#define __KDBUS_DOMAIN_H
++
++#include <linux/fs.h>
++#include <linux/idr.h>
++#include <linux/kref.h>
++#include <linux/user_namespace.h>
++
++#include "node.h"
++
++/**
++ * struct kdbus_domain - domain for buses
++ * @node: Underlying API node
++ * @lock: Domain data lock
++ * @last_id: Last used object id
++ * @user_idr: Set of all users indexed by UID
++ * @user_ida: Set of all users to compute small indices
++ * @user_namespace: User namespace, pinned at creation time
++ * @dentry: Root dentry of VFS mount (don't use outside of kdbusfs)
++ */
++struct kdbus_domain {
++ struct kdbus_node node;
++ struct mutex lock;
++ atomic64_t last_id;
++ struct idr user_idr;
++ struct ida user_ida;
++ struct user_namespace *user_namespace;
++ struct dentry *dentry;
++};
++
++/**
++ * struct kdbus_user - resource accounting for users
++ * @kref: Reference counter
++ * @domain: Domain of the user
++ * @id: Index of this user
++ * @uid: UID of the user
++ * @buses: Number of buses the user has created
++ * @connections: Number of connections the user has created
++ */
++struct kdbus_user {
++ struct kref kref;
++ struct kdbus_domain *domain;
++ unsigned int id;
++ kuid_t uid;
++ atomic_t buses;
++ atomic_t connections;
++};
++
++#define kdbus_domain_from_node(_node) \
++ container_of((_node), struct kdbus_domain, node)
++
++struct kdbus_domain *kdbus_domain_new(unsigned int access);
++struct kdbus_domain *kdbus_domain_ref(struct kdbus_domain *domain);
++struct kdbus_domain *kdbus_domain_unref(struct kdbus_domain *domain);
++int kdbus_domain_populate(struct kdbus_domain *domain, unsigned int access);
++
++#define KDBUS_USER_KERNEL_ID 0 /* ID 0 is reserved for kernel accounting */
++
++struct kdbus_user *kdbus_user_lookup(struct kdbus_domain *domain, kuid_t uid);
++struct kdbus_user *kdbus_user_ref(struct kdbus_user *u);
++struct kdbus_user *kdbus_user_unref(struct kdbus_user *u);
++
++#endif
+diff --git a/ipc/kdbus/endpoint.c b/ipc/kdbus/endpoint.c
+new file mode 100644
+index 0000000..174d274
+--- /dev/null
++++ b/ipc/kdbus/endpoint.c
+@@ -0,0 +1,275 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/fs.h>
++#include <linux/idr.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/sched.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/uio.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "domain.h"
++#include "endpoint.h"
++#include "handle.h"
++#include "item.h"
++#include "message.h"
++#include "policy.h"
++
++static void kdbus_ep_free(struct kdbus_node *node)
++{
++ struct kdbus_ep *ep = container_of(node, struct kdbus_ep, node);
++
++ WARN_ON(!list_empty(&ep->conn_list));
++
++ kdbus_policy_db_clear(&ep->policy_db);
++ kdbus_bus_unref(ep->bus);
++ kdbus_user_unref(ep->user);
++ kfree(ep);
++}
++
++static void kdbus_ep_release(struct kdbus_node *node, bool was_active)
++{
++ struct kdbus_ep *ep = container_of(node, struct kdbus_ep, node);
++
++ /* disconnect all connections to this endpoint */
++ for (;;) {
++ struct kdbus_conn *conn;
++
++ mutex_lock(&ep->lock);
++ conn = list_first_entry_or_null(&ep->conn_list,
++ struct kdbus_conn,
++ ep_entry);
++ if (!conn) {
++ mutex_unlock(&ep->lock);
++ break;
++ }
++
++ /* take reference, release lock, disconnect without lock */
++ kdbus_conn_ref(conn);
++ mutex_unlock(&ep->lock);
++
++ kdbus_conn_disconnect(conn, false);
++ kdbus_conn_unref(conn);
++ }
++}
++
++/**
++ * kdbus_ep_new() - create a new endpoint
++ * @bus: The bus this endpoint will be created for
++ * @name: The name of the endpoint
++ * @access: The access flags for this node (KDBUS_MAKE_ACCESS_*)
++ * @uid: The uid of the node
++ * @gid: The gid of the node
++ * @is_custom: Whether this is a custom endpoint
++ *
++ * This function will create a new enpoint with the given
++ * name and properties for a given bus.
++ *
++ * Return: a new kdbus_ep on success, ERR_PTR on failure.
++ */
++struct kdbus_ep *kdbus_ep_new(struct kdbus_bus *bus, const char *name,
++ unsigned int access, kuid_t uid, kgid_t gid,
++ bool is_custom)
++{
++ struct kdbus_ep *e;
++ int ret;
++
++ /*
++ * Validate only custom endpoints names, default endpoints
++ * with a "bus" name are created when the bus is created
++ */
++ if (is_custom) {
++ ret = kdbus_verify_uid_prefix(name, bus->domain->user_namespace,
++ uid);
++ if (ret < 0)
++ return ERR_PTR(ret);
++ }
++
++ e = kzalloc(sizeof(*e), GFP_KERNEL);
++ if (!e)
++ return ERR_PTR(-ENOMEM);
++
++ kdbus_node_init(&e->node, KDBUS_NODE_ENDPOINT);
++
++ e->node.free_cb = kdbus_ep_free;
++ e->node.release_cb = kdbus_ep_release;
++ e->node.uid = uid;
++ e->node.gid = gid;
++ e->node.mode = S_IRUSR | S_IWUSR;
++ if (access & (KDBUS_MAKE_ACCESS_GROUP | KDBUS_MAKE_ACCESS_WORLD))
++ e->node.mode |= S_IRGRP | S_IWGRP;
++ if (access & KDBUS_MAKE_ACCESS_WORLD)
++ e->node.mode |= S_IROTH | S_IWOTH;
++
++ mutex_init(&e->lock);
++ INIT_LIST_HEAD(&e->conn_list);
++ kdbus_policy_db_init(&e->policy_db);
++ e->bus = kdbus_bus_ref(bus);
++
++ ret = kdbus_node_link(&e->node, &bus->node, name);
++ if (ret < 0)
++ goto exit_unref;
++
++ /*
++ * Transactions on custom endpoints are never accounted on the global
++ * user limits. Instead, for each custom endpoint, we create a custom,
++ * unique user, which all transactions are accounted on. Regardless of
++ * the user using that endpoint, it is always accounted on the same
++ * user-object. This budget is not shared with ordinary users on
++ * non-custom endpoints.
++ */
++ if (is_custom) {
++ e->user = kdbus_user_lookup(bus->domain, INVALID_UID);
++ if (IS_ERR(e->user)) {
++ ret = PTR_ERR(e->user);
++ e->user = NULL;
++ goto exit_unref;
++ }
++ }
++
++ return e;
++
++exit_unref:
++ kdbus_node_deactivate(&e->node);
++ kdbus_node_unref(&e->node);
++ return ERR_PTR(ret);
++}
++
++/**
++ * kdbus_ep_ref() - increase the reference counter of a kdbus_ep
++ * @ep: The endpoint to reference
++ *
++ * Every user of an endpoint, except for its creator, must add a reference to
++ * the kdbus_ep instance using this function.
++ *
++ * Return: the ep itself
++ */
++struct kdbus_ep *kdbus_ep_ref(struct kdbus_ep *ep)
++{
++ if (ep)
++ kdbus_node_ref(&ep->node);
++ return ep;
++}
++
++/**
++ * kdbus_ep_unref() - decrease the reference counter of a kdbus_ep
++ * @ep: The ep to unref
++ *
++ * Release a reference. If the reference count drops to 0, the ep will be
++ * freed.
++ *
++ * Return: NULL
++ */
++struct kdbus_ep *kdbus_ep_unref(struct kdbus_ep *ep)
++{
++ if (ep)
++ kdbus_node_unref(&ep->node);
++ return NULL;
++}
++
++/**
++ * kdbus_cmd_ep_make() - handle KDBUS_CMD_ENDPOINT_MAKE
++ * @bus: bus to operate on
++ * @argp: command payload
++ *
++ * Return: Newly created endpoint on success, ERR_PTR on failure.
++ */
++struct kdbus_ep *kdbus_cmd_ep_make(struct kdbus_bus *bus, void __user *argp)
++{
++ const char *item_make_name;
++ struct kdbus_ep *ep = NULL;
++ struct kdbus_cmd *cmd;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_MAKE_NAME, .mandatory = true },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_MAKE_ACCESS_GROUP |
++ KDBUS_MAKE_ACCESS_WORLD,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret < 0)
++ return ERR_PTR(ret);
++ if (ret > 0)
++ return NULL;
++
++ item_make_name = argv[1].item->str;
++
++ ep = kdbus_ep_new(bus, item_make_name, cmd->flags,
++ current_euid(), current_egid(), true);
++ if (IS_ERR(ep)) {
++ ret = PTR_ERR(ep);
++ ep = NULL;
++ goto exit;
++ }
++
++ if (!kdbus_node_activate(&ep->node)) {
++ ret = -ESHUTDOWN;
++ goto exit;
++ }
++
++exit:
++ ret = kdbus_args_clear(&args, ret);
++ if (ret < 0) {
++ if (ep) {
++ kdbus_node_deactivate(&ep->node);
++ kdbus_ep_unref(ep);
++ }
++ return ERR_PTR(ret);
++ }
++ return ep;
++}
++
++/**
++ * kdbus_cmd_ep_update() - handle KDBUS_CMD_ENDPOINT_UPDATE
++ * @ep: endpoint to operate on
++ * @argp: command payload
++ *
++ * Return: Newly created endpoint on success, ERR_PTR on failure.
++ */
++int kdbus_cmd_ep_update(struct kdbus_ep *ep, void __user *argp)
++{
++ struct kdbus_cmd *cmd;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_NAME, .multiple = true },
++ { .type = KDBUS_ITEM_POLICY_ACCESS, .multiple = true },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ ret = kdbus_policy_set(&ep->policy_db, args.items, args.items_size,
++ 0, true, ep);
++ return kdbus_args_clear(&args, ret);
++}
+diff --git a/ipc/kdbus/endpoint.h b/ipc/kdbus/endpoint.h
+new file mode 100644
+index 0000000..d31954b
+--- /dev/null
++++ b/ipc/kdbus/endpoint.h
+@@ -0,0 +1,67 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_ENDPOINT_H
++#define __KDBUS_ENDPOINT_H
++
++#include <linux/list.h>
++#include <linux/mutex.h>
++#include <linux/uidgid.h>
++#include "node.h"
++#include "policy.h"
++
++struct kdbus_bus;
++struct kdbus_user;
++
++/**
++ * struct kdbus_ep - enpoint to access a bus
++ * @node: The kdbus node
++ * @lock: Endpoint data lock
++ * @bus: Bus behind this endpoint
++ * @user: Custom enpoints account against an anonymous user
++ * @policy_db: Uploaded policy
++ * @conn_list: Connections of this endpoint
++ *
++ * An enpoint offers access to a bus; the default endpoint node name is "bus".
++ * Additional custom endpoints to the same bus can be created and they can
++ * carry their own policies/filters.
++ */
++struct kdbus_ep {
++ struct kdbus_node node;
++ struct mutex lock;
++
++ /* static */
++ struct kdbus_bus *bus;
++ struct kdbus_user *user;
++
++ /* protected by own locks */
++ struct kdbus_policy_db policy_db;
++
++ /* protected by ep->lock */
++ struct list_head conn_list;
++};
++
++#define kdbus_ep_from_node(_node) \
++ container_of((_node), struct kdbus_ep, node)
++
++struct kdbus_ep *kdbus_ep_new(struct kdbus_bus *bus, const char *name,
++ unsigned int access, kuid_t uid, kgid_t gid,
++ bool policy);
++struct kdbus_ep *kdbus_ep_ref(struct kdbus_ep *ep);
++struct kdbus_ep *kdbus_ep_unref(struct kdbus_ep *ep);
++
++struct kdbus_ep *kdbus_cmd_ep_make(struct kdbus_bus *bus, void __user *argp);
++int kdbus_cmd_ep_update(struct kdbus_ep *ep, void __user *argp);
++
++#endif
+diff --git a/ipc/kdbus/fs.c b/ipc/kdbus/fs.c
+new file mode 100644
+index 0000000..d01f33b
+--- /dev/null
++++ b/ipc/kdbus/fs.c
+@@ -0,0 +1,510 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/dcache.h>
++#include <linux/fs.h>
++#include <linux/fsnotify.h>
++#include <linux/init.h>
++#include <linux/ipc_namespace.h>
++#include <linux/magic.h>
++#include <linux/module.h>
++#include <linux/mount.h>
++#include <linux/mutex.h>
++#include <linux/namei.h>
++#include <linux/pagemap.h>
++#include <linux/sched.h>
++#include <linux/slab.h>
++
++#include "bus.h"
++#include "domain.h"
++#include "endpoint.h"
++#include "fs.h"
++#include "handle.h"
++#include "node.h"
++
++#define kdbus_node_from_dentry(_dentry) \
++ ((struct kdbus_node *)(_dentry)->d_fsdata)
++
++static struct inode *fs_inode_get(struct super_block *sb,
++ struct kdbus_node *node);
++
++/*
++ * Directory Management
++ */
++
++static inline unsigned char kdbus_dt_type(struct kdbus_node *node)
++{
++ switch (node->type) {
++ case KDBUS_NODE_DOMAIN:
++ case KDBUS_NODE_BUS:
++ return DT_DIR;
++ case KDBUS_NODE_CONTROL:
++ case KDBUS_NODE_ENDPOINT:
++ return DT_REG;
++ }
++
++ return DT_UNKNOWN;
++}
++
++static int fs_dir_fop_iterate(struct file *file, struct dir_context *ctx)
++{
++ struct dentry *dentry = file->f_path.dentry;
++ struct kdbus_node *parent = kdbus_node_from_dentry(dentry);
++ struct kdbus_node *old, *next = file->private_data;
++
++ /*
++ * kdbusfs directory iterator (modelled after sysfs/kernfs)
++ * When iterating kdbusfs directories, we iterate all children of the
++ * parent kdbus_node object. We use ctx->pos to store the hash of the
++ * child and file->private_data to store a reference to the next node
++ * object. If ctx->pos is not modified via llseek while you iterate a
++ * directory, then we use the file->private_data node pointer to
++ * directly access the next node in the tree.
++ * However, if you directly seek on the directory, we have to find the
++ * closest node to that position and cannot use our node pointer. This
++ * means iterating the rb-tree to find the closest match and start over
++ * from there.
++ * Note that hash values are not neccessarily unique. Therefore, llseek
++ * is not guaranteed to seek to the same node that you got when you
++ * retrieved the position. Seeking to 0, 1, 2 and >=INT_MAX is safe,
++ * though. We could use the inode-number as position, but this would
++ * require another rb-tree for fast access. Kernfs and others already
++ * ignore those conflicts, so we should be fine, too.
++ */
++
++ if (!dir_emit_dots(file, ctx))
++ return 0;
++
++ /* acquire @next; if deactivated, or seek detected, find next node */
++ old = next;
++ if (next && ctx->pos == next->hash) {
++ if (kdbus_node_acquire(next))
++ kdbus_node_ref(next);
++ else
++ next = kdbus_node_next_child(parent, next);
++ } else {
++ next = kdbus_node_find_closest(parent, ctx->pos);
++ }
++ kdbus_node_unref(old);
++
++ while (next) {
++ /* emit @next */
++ file->private_data = next;
++ ctx->pos = next->hash;
++
++ kdbus_node_release(next);
++
++ if (!dir_emit(ctx, next->name, strlen(next->name), next->id,
++ kdbus_dt_type(next)))
++ return 0;
++
++ /* find next node after @next */
++ old = next;
++ next = kdbus_node_next_child(parent, next);
++ kdbus_node_unref(old);
++ }
++
++ file->private_data = NULL;
++ ctx->pos = INT_MAX;
++
++ return 0;
++}
++
++static loff_t fs_dir_fop_llseek(struct file *file, loff_t offset, int whence)
++{
++ struct inode *inode = file_inode(file);
++ loff_t ret;
++
++ /* protect f_off against fop_iterate */
++ mutex_lock(&inode->i_mutex);
++ ret = generic_file_llseek(file, offset, whence);
++ mutex_unlock(&inode->i_mutex);
++
++ return ret;
++}
++
++static int fs_dir_fop_release(struct inode *inode, struct file *file)
++{
++ kdbus_node_unref(file->private_data);
++ return 0;
++}
++
++static const struct file_operations fs_dir_fops = {
++ .read = generic_read_dir,
++ .iterate = fs_dir_fop_iterate,
++ .llseek = fs_dir_fop_llseek,
++ .release = fs_dir_fop_release,
++};
++
++static struct dentry *fs_dir_iop_lookup(struct inode *dir,
++ struct dentry *dentry,
++ unsigned int flags)
++{
++ struct dentry *dnew = NULL;
++ struct kdbus_node *parent;
++ struct kdbus_node *node;
++ struct inode *inode;
++
++ parent = kdbus_node_from_dentry(dentry->d_parent);
++ if (!kdbus_node_acquire(parent))
++ return NULL;
++
++ /* returns reference to _acquired_ child node */
++ node = kdbus_node_find_child(parent, dentry->d_name.name);
++ if (node) {
++ dentry->d_fsdata = node;
++ inode = fs_inode_get(dir->i_sb, node);
++ if (IS_ERR(inode))
++ dnew = ERR_CAST(inode);
++ else
++ dnew = d_splice_alias(inode, dentry);
++
++ kdbus_node_release(node);
++ }
++
++ kdbus_node_release(parent);
++ return dnew;
++}
++
++static const struct inode_operations fs_dir_iops = {
++ .permission = generic_permission,
++ .lookup = fs_dir_iop_lookup,
++};
++
++/*
++ * Inode Management
++ */
++
++static const struct inode_operations fs_inode_iops = {
++ .permission = generic_permission,
++};
++
++static struct inode *fs_inode_get(struct super_block *sb,
++ struct kdbus_node *node)
++{
++ struct inode *inode;
++
++ inode = iget_locked(sb, node->id);
++ if (!inode)
++ return ERR_PTR(-ENOMEM);
++ if (!(inode->i_state & I_NEW))
++ return inode;
++
++ inode->i_private = kdbus_node_ref(node);
++ inode->i_mapping->a_ops = &empty_aops;
++ inode->i_mode = node->mode & S_IALLUGO;
++ inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
++ inode->i_uid = node->uid;
++ inode->i_gid = node->gid;
++
++ switch (node->type) {
++ case KDBUS_NODE_DOMAIN:
++ case KDBUS_NODE_BUS:
++ inode->i_mode |= S_IFDIR;
++ inode->i_op = &fs_dir_iops;
++ inode->i_fop = &fs_dir_fops;
++ set_nlink(inode, 2);
++ break;
++ case KDBUS_NODE_CONTROL:
++ case KDBUS_NODE_ENDPOINT:
++ inode->i_mode |= S_IFREG;
++ inode->i_op = &fs_inode_iops;
++ inode->i_fop = &kdbus_handle_ops;
++ break;
++ }
++
++ unlock_new_inode(inode);
++
++ return inode;
++}
++
++/*
++ * Superblock Management
++ */
++
++static int fs_super_dop_revalidate(struct dentry *dentry, unsigned int flags)
++{
++ struct kdbus_node *node;
++
++ /* Force lookup on negatives */
++ if (!dentry->d_inode)
++ return 0;
++
++ node = kdbus_node_from_dentry(dentry);
++
++ /* see whether the node has been removed */
++ if (!kdbus_node_is_active(node))
++ return 0;
++
++ return 1;
++}
++
++static void fs_super_dop_release(struct dentry *dentry)
++{
++ kdbus_node_unref(dentry->d_fsdata);
++}
++
++static const struct dentry_operations fs_super_dops = {
++ .d_revalidate = fs_super_dop_revalidate,
++ .d_release = fs_super_dop_release,
++};
++
++static void fs_super_sop_evict_inode(struct inode *inode)
++{
++ struct kdbus_node *node = kdbus_node_from_inode(inode);
++
++ truncate_inode_pages_final(&inode->i_data);
++ clear_inode(inode);
++ kdbus_node_unref(node);
++}
++
++static const struct super_operations fs_super_sops = {
++ .statfs = simple_statfs,
++ .drop_inode = generic_delete_inode,
++ .evict_inode = fs_super_sop_evict_inode,
++};
++
++static int fs_super_fill(struct super_block *sb)
++{
++ struct kdbus_domain *domain = sb->s_fs_info;
++ struct inode *inode;
++ int ret;
++
++ sb->s_blocksize = PAGE_CACHE_SIZE;
++ sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
++ sb->s_magic = KDBUS_SUPER_MAGIC;
++ sb->s_maxbytes = MAX_LFS_FILESIZE;
++ sb->s_op = &fs_super_sops;
++ sb->s_time_gran = 1;
++
++ inode = fs_inode_get(sb, &domain->node);
++ if (IS_ERR(inode))
++ return PTR_ERR(inode);
++
++ sb->s_root = d_make_root(inode);
++ if (!sb->s_root) {
++ /* d_make_root iput()s the inode on failure */
++ return -ENOMEM;
++ }
++
++ /* sb holds domain reference */
++ sb->s_root->d_fsdata = &domain->node;
++ sb->s_d_op = &fs_super_dops;
++
++ /* sb holds root reference */
++ domain->dentry = sb->s_root;
++
++ if (!kdbus_node_activate(&domain->node))
++ return -ESHUTDOWN;
++
++ ret = kdbus_domain_populate(domain, KDBUS_MAKE_ACCESS_WORLD);
++ if (ret < 0)
++ return ret;
++
++ sb->s_flags |= MS_ACTIVE;
++ return 0;
++}
++
++static void fs_super_kill(struct super_block *sb)
++{
++ struct kdbus_domain *domain = sb->s_fs_info;
++
++ if (domain) {
++ kdbus_node_deactivate(&domain->node);
++ domain->dentry = NULL;
++ }
++
++ kill_anon_super(sb);
++
++ if (domain)
++ kdbus_domain_unref(domain);
++}
++
++static int fs_super_set(struct super_block *sb, void *data)
++{
++ int ret;
++
++ ret = set_anon_super(sb, data);
++ if (!ret)
++ sb->s_fs_info = data;
++
++ return ret;
++}
++
++static struct dentry *fs_super_mount(struct file_system_type *fs_type,
++ int flags, const char *dev_name,
++ void *data)
++{
++ struct kdbus_domain *domain;
++ struct super_block *sb;
++ int ret;
++
++ domain = kdbus_domain_new(KDBUS_MAKE_ACCESS_WORLD);
++ if (IS_ERR(domain))
++ return ERR_CAST(domain);
++
++ sb = sget(fs_type, NULL, fs_super_set, flags, domain);
++ if (IS_ERR(sb)) {
++ kdbus_node_deactivate(&domain->node);
++ kdbus_domain_unref(domain);
++ return ERR_CAST(sb);
++ }
++
++ WARN_ON(sb->s_fs_info != domain);
++ WARN_ON(sb->s_root);
++
++ ret = fs_super_fill(sb);
++ if (ret < 0) {
++ /* calls into ->kill_sb() when done */
++ deactivate_locked_super(sb);
++ return ERR_PTR(ret);
++ }
++
++ return dget(sb->s_root);
++}
++
++static struct file_system_type fs_type = {
++ .name = KBUILD_MODNAME "fs",
++ .owner = THIS_MODULE,
++ .mount = fs_super_mount,
++ .kill_sb = fs_super_kill,
++ .fs_flags = FS_USERNS_MOUNT,
++};
++
++/**
++ * kdbus_fs_init() - register kdbus filesystem
++ *
++ * This registers a filesystem with the VFS layer. The filesystem is called
++ * `KBUILD_MODNAME "fs"', which usually resolves to `kdbusfs'. The nameing
++ * scheme allows to set KBUILD_MODNAME to "kdbus2" and you will get an
++ * independent filesystem for developers.
++ *
++ * Each mount of the kdbusfs filesystem has an kdbus_domain attached.
++ * Operations on this mount will only affect the attached domain. On each mount
++ * a new domain is automatically created and used for this mount exclusively.
++ * If you want to share a domain across multiple mounts, you need to bind-mount
++ * it.
++ *
++ * Mounts of kdbusfs (with a different domain each) are unrelated to each other
++ * and will never have any effect on any domain but their own.
++ *
++ * Return: 0 on success, negative error otherwise.
++ */
++int kdbus_fs_init(void)
++{
++ return register_filesystem(&fs_type);
++}
++
++/**
++ * kdbus_fs_exit() - unregister kdbus filesystem
++ *
++ * This does the reverse to kdbus_fs_init(). It unregisters the kdbusfs
++ * filesystem from VFS and cleans up any allocated resources.
++ */
++void kdbus_fs_exit(void)
++{
++ unregister_filesystem(&fs_type);
++}
++
++/* acquire domain of @node, making sure all ancestors are active */
++static struct kdbus_domain *fs_acquire_domain(struct kdbus_node *node)
++{
++ struct kdbus_domain *domain;
++ struct kdbus_node *iter;
++
++ /* caller must guarantee that @node is linked */
++ for (iter = node; iter->parent; iter = iter->parent)
++ if (!kdbus_node_is_active(iter->parent))
++ return NULL;
++
++ /* root nodes are always domains */
++ if (WARN_ON(iter->type != KDBUS_NODE_DOMAIN))
++ return NULL;
++
++ domain = kdbus_domain_from_node(iter);
++ if (!kdbus_node_acquire(&domain->node))
++ return NULL;
++
++ return domain;
++}
++
++/**
++ * kdbus_fs_flush() - flush dcache entries of a node
++ * @node: Node to flush entries of
++ *
++ * This flushes all VFS filesystem cache entries for a node and all its
++ * children. This should be called whenever a node is destroyed during
++ * runtime. It will flush the cache entries so the linked objects can be
++ * deallocated.
++ *
++ * This is a no-op if you call it on active nodes (they really should stay in
++ * cache) or on nodes with deactivated parents (flushing the parent is enough).
++ * Furthermore, there is no need to call it on nodes whose lifetime is bound to
++ * their parents'. In those cases, the parent-flush will always also flush the
++ * children.
++ */
++void kdbus_fs_flush(struct kdbus_node *node)
++{
++ struct dentry *dentry, *parent_dentry = NULL;
++ struct kdbus_domain *domain;
++ struct qstr name;
++
++ /* active nodes should remain in cache */
++ if (!kdbus_node_is_deactivated(node))
++ return;
++
++ /* nodes that were never linked were never instantiated */
++ if (!node->parent)
++ return;
++
++ /* acquire domain and verify all ancestors are active */
++ domain = fs_acquire_domain(node);
++ if (!domain)
++ return;
++
++ switch (node->type) {
++ case KDBUS_NODE_ENDPOINT:
++ if (WARN_ON(!node->parent || !node->parent->name))
++ goto exit;
++
++ name.name = node->parent->name;
++ name.len = strlen(node->parent->name);
++ parent_dentry = d_hash_and_lookup(domain->dentry, &name);
++ if (IS_ERR_OR_NULL(parent_dentry))
++ goto exit;
++
++ /* fallthrough */
++ case KDBUS_NODE_BUS:
++ if (WARN_ON(!node->name))
++ goto exit;
++
++ name.name = node->name;
++ name.len = strlen(node->name);
++ dentry = d_hash_and_lookup(parent_dentry ? : domain->dentry,
++ &name);
++ if (!IS_ERR_OR_NULL(dentry)) {
++ d_invalidate(dentry);
++ dput(dentry);
++ }
++
++ dput(parent_dentry);
++ break;
++
++ default:
++ /* all other types are bound to their parent lifetime */
++ break;
++ }
++
++exit:
++ kdbus_node_release(&domain->node);
++}
+diff --git a/ipc/kdbus/fs.h b/ipc/kdbus/fs.h
+new file mode 100644
+index 0000000..62f7d6a
+--- /dev/null
++++ b/ipc/kdbus/fs.h
+@@ -0,0 +1,28 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUSFS_H
++#define __KDBUSFS_H
++
++#include <linux/kernel.h>
++
++struct kdbus_node;
++
++int kdbus_fs_init(void);
++void kdbus_fs_exit(void);
++void kdbus_fs_flush(struct kdbus_node *node);
++
++#define kdbus_node_from_inode(_inode) \
++ ((struct kdbus_node *)(_inode)->i_private)
++
++#endif
+diff --git a/ipc/kdbus/handle.c b/ipc/kdbus/handle.c
+new file mode 100644
+index 0000000..f72dbe5
+--- /dev/null
++++ b/ipc/kdbus/handle.c
+@@ -0,0 +1,617 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/file.h>
++#include <linux/fs.h>
++#include <linux/idr.h>
++#include <linux/init.h>
++#include <linux/kdev_t.h>
++#include <linux/module.h>
++#include <linux/poll.h>
++#include <linux/rwsem.h>
++#include <linux/sched.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/syscalls.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "endpoint.h"
++#include "fs.h"
++#include "handle.h"
++#include "item.h"
++#include "match.h"
++#include "message.h"
++#include "names.h"
++#include "domain.h"
++#include "policy.h"
++
++static int kdbus_args_verify(struct kdbus_args *args)
++{
++ struct kdbus_item *item;
++ size_t i;
++ int ret;
++
++ KDBUS_ITEMS_FOREACH(item, args->items, args->items_size) {
++ struct kdbus_arg *arg = NULL;
++
++ if (!KDBUS_ITEM_VALID(item, args->items, args->items_size))
++ return -EINVAL;
++
++ for (i = 0; i < args->argc; ++i)
++ if (args->argv[i].type == item->type)
++ break;
++ if (i >= args->argc)
++ return -EINVAL;
++
++ arg = &args->argv[i];
++
++ ret = kdbus_item_validate(item);
++ if (ret < 0)
++ return ret;
++
++ if (arg->item && !arg->multiple)
++ return -EINVAL;
++
++ arg->item = item;
++ }
++
++ if (!KDBUS_ITEMS_END(item, args->items, args->items_size))
++ return -EINVAL;
++
++ for (i = 0; i < args->argc; ++i)
++ if (args->argv[i].mandatory && !args->argv[i].item)
++ return -EINVAL;
++
++ return 0;
++}
++
++static int kdbus_args_negotiate(struct kdbus_args *args)
++{
++ struct kdbus_item __user *user;
++ struct kdbus_item *negotiation;
++ size_t i, j, num;
++
++ /*
++ * If KDBUS_FLAG_NEGOTIATE is set, we overwrite the flags field with
++ * the set of supported flags. Furthermore, if an KDBUS_ITEM_NEGOTIATE
++ * item is passed, we iterate its payload (array of u64, each set to an
++ * item type) and clear all unsupported item-types to 0.
++ * The caller might do this recursively, if other flags or objects are
++ * embedded in the payload itself.
++ */
++
++ if (args->cmd->flags & KDBUS_FLAG_NEGOTIATE) {
++ if (put_user(args->allowed_flags & ~KDBUS_FLAG_NEGOTIATE,
++ &args->user->flags))
++ return -EFAULT;
++ }
++
++ if (args->argc < 1 || args->argv[0].type != KDBUS_ITEM_NEGOTIATE ||
++ !args->argv[0].item)
++ return 0;
++
++ negotiation = args->argv[0].item;
++ user = (struct kdbus_item __user *)
++ ((u8 __user *)args->user +
++ ((u8 *)negotiation - (u8 *)args->cmd));
++ num = KDBUS_ITEM_PAYLOAD_SIZE(negotiation) / sizeof(u64);
++
++ for (i = 0; i < num; ++i) {
++ for (j = 0; j < args->argc; ++j)
++ if (negotiation->data64[i] == args->argv[j].type)
++ break;
++
++ if (j < args->argc)
++ continue;
++
++ /* this item is not supported, clear it out */
++ negotiation->data64[i] = 0;
++ if (put_user(negotiation->data64[i], &user->data64[i]))
++ return -EFAULT;
++ }
++
++ return 0;
++}
++
++/**
++ * __kdbus_args_parse() - parse payload of kdbus command
++ * @args: object to parse data into
++ * @argp: user-space location of command payload to parse
++ * @type_size: overall size of command payload to parse
++ * @items_offset: offset of items array in command payload
++ * @out: output variable to store pointer to copied payload
++ *
++ * This parses the ioctl payload at user-space location @argp into @args. @args
++ * must be pre-initialized by the caller to reflect the supported flags and
++ * items of this command. This parser will then copy the command payload into
++ * kernel-space, verify correctness and consistency and cache pointers to parsed
++ * items and other data in @args.
++ *
++ * If this function succeeded, you must call kdbus_args_clear() to release
++ * allocated resources before destroying @args.
++ *
++ * Return: On failure a negative error code is returned. Otherwise, 1 is
++ * returned if negotiation was requested, 0 if not.
++ */
++int __kdbus_args_parse(struct kdbus_args *args, void __user *argp,
++ size_t type_size, size_t items_offset, void **out)
++{
++ int ret;
++
++ args->cmd = kdbus_memdup_user(argp, type_size, KDBUS_CMD_MAX_SIZE);
++ if (IS_ERR(args->cmd))
++ return PTR_ERR(args->cmd);
++
++ args->cmd->return_flags = 0;
++ args->user = argp;
++ args->items = (void *)((u8 *)args->cmd + items_offset);
++ args->items_size = args->cmd->size - items_offset;
++
++ if (args->cmd->flags & ~args->allowed_flags) {
++ ret = -EINVAL;
++ goto error;
++ }
++
++ ret = kdbus_args_verify(args);
++ if (ret < 0)
++ goto error;
++
++ ret = kdbus_args_negotiate(args);
++ if (ret < 0)
++ goto error;
++
++ *out = args->cmd;
++ return !!(args->cmd->flags & KDBUS_FLAG_NEGOTIATE);
++
++error:
++ return kdbus_args_clear(args, ret);
++}
++
++/**
++ * kdbus_args_clear() - release allocated command resources
++ * @args: object to release resources of
++ * @ret: return value of this command
++ *
++ * This frees all allocated resources on @args and copies the command result
++ * flags into user-space. @ret is usually returned unchanged by this function,
++ * so it can be used in the final 'return' statement of the command handler.
++ *
++ * Return: -EFAULT if return values cannot be copied into user-space, otherwise
++ * @ret is returned unchanged.
++ */
++int kdbus_args_clear(struct kdbus_args *args, int ret)
++{
++ if (!args)
++ return ret;
++
++ if (!IS_ERR_OR_NULL(args->cmd)) {
++ if (put_user(args->cmd->return_flags,
++ &args->user->return_flags))
++ ret = -EFAULT;
++ kfree(args->cmd);
++ args->cmd = NULL;
++ }
++
++ return ret;
++}
++
++/**
++ * enum kdbus_handle_type - type an handle can be of
++ * @KDBUS_HANDLE_NONE: no type set, yet
++ * @KDBUS_HANDLE_BUS_OWNER: bus owner
++ * @KDBUS_HANDLE_EP_OWNER: endpoint owner
++ * @KDBUS_HANDLE_CONNECTED: endpoint connection after HELLO
++ */
++enum kdbus_handle_type {
++ KDBUS_HANDLE_NONE,
++ KDBUS_HANDLE_BUS_OWNER,
++ KDBUS_HANDLE_EP_OWNER,
++ KDBUS_HANDLE_CONNECTED,
++};
++
++/**
++ * struct kdbus_handle - handle to the kdbus system
++ * @rwlock: handle lock
++ * @type: type of this handle (KDBUS_HANDLE_*)
++ * @bus_owner: bus this handle owns
++ * @ep_owner: endpoint this handle owns
++ * @conn: connection this handle owns
++ * @privileged: Flag to mark a handle as privileged
++ */
++struct kdbus_handle {
++ struct rw_semaphore rwlock;
++
++ enum kdbus_handle_type type;
++ union {
++ struct kdbus_bus *bus_owner;
++ struct kdbus_ep *ep_owner;
++ struct kdbus_conn *conn;
++ };
++
++ bool privileged:1;
++};
++
++static int kdbus_handle_open(struct inode *inode, struct file *file)
++{
++ struct kdbus_handle *handle;
++ struct kdbus_node *node;
++ int ret;
++
++ node = kdbus_node_from_inode(inode);
++ if (!kdbus_node_acquire(node))
++ return -ESHUTDOWN;
++
++ handle = kzalloc(sizeof(*handle), GFP_KERNEL);
++ if (!handle) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ init_rwsem(&handle->rwlock);
++ handle->type = KDBUS_HANDLE_NONE;
++
++ if (node->type == KDBUS_NODE_ENDPOINT) {
++ struct kdbus_ep *ep = kdbus_ep_from_node(node);
++ struct kdbus_bus *bus = ep->bus;
++
++ /*
++ * A connection is privileged if it is opened on an endpoint
++ * without custom policy and either:
++ * * the user has CAP_IPC_OWNER in the domain user namespace
++ * or
++ * * the callers euid matches the uid of the bus creator
++ */
++ if (!ep->user &&
++ (ns_capable(bus->domain->user_namespace, CAP_IPC_OWNER) ||
++ uid_eq(file->f_cred->euid, bus->node.uid)))
++ handle->privileged = true;
++ }
++
++ file->private_data = handle;
++ ret = 0;
++
++exit:
++ kdbus_node_release(node);
++ return ret;
++}
++
++static int kdbus_handle_release(struct inode *inode, struct file *file)
++{
++ struct kdbus_handle *handle = file->private_data;
++
++ switch (handle->type) {
++ case KDBUS_HANDLE_BUS_OWNER:
++ if (handle->bus_owner) {
++ kdbus_node_deactivate(&handle->bus_owner->node);
++ kdbus_bus_unref(handle->bus_owner);
++ }
++ break;
++ case KDBUS_HANDLE_EP_OWNER:
++ if (handle->ep_owner) {
++ kdbus_node_deactivate(&handle->ep_owner->node);
++ kdbus_ep_unref(handle->ep_owner);
++ }
++ break;
++ case KDBUS_HANDLE_CONNECTED:
++ kdbus_conn_disconnect(handle->conn, false);
++ kdbus_conn_unref(handle->conn);
++ break;
++ case KDBUS_HANDLE_NONE:
++ /* nothing to clean up */
++ break;
++ }
++
++ kfree(handle);
++
++ return 0;
++}
++
++static long kdbus_handle_ioctl_control(struct file *file, unsigned int cmd,
++ void __user *argp)
++{
++ struct kdbus_handle *handle = file->private_data;
++ struct kdbus_node *node = file_inode(file)->i_private;
++ struct kdbus_domain *domain;
++ int ret = 0;
++
++ if (!kdbus_node_acquire(node))
++ return -ESHUTDOWN;
++
++ /*
++ * The parent of control-nodes is always a domain, make sure to pin it
++ * so the parent is actually valid.
++ */
++ domain = kdbus_domain_from_node(node->parent);
++ if (!kdbus_node_acquire(&domain->node)) {
++ kdbus_node_release(node);
++ return -ESHUTDOWN;
++ }
++
++ switch (cmd) {
++ case KDBUS_CMD_BUS_MAKE: {
++ struct kdbus_bus *bus;
++
++ bus = kdbus_cmd_bus_make(domain, argp);
++ if (IS_ERR_OR_NULL(bus)) {
++ ret = PTR_ERR_OR_ZERO(bus);
++ break;
++ }
++
++ handle->type = KDBUS_HANDLE_BUS_OWNER;
++ handle->bus_owner = bus;
++ break;
++ }
++
++ default:
++ ret = -EBADFD;
++ break;
++ }
++
++ kdbus_node_release(&domain->node);
++ kdbus_node_release(node);
++ return ret;
++}
++
++static long kdbus_handle_ioctl_ep(struct file *file, unsigned int cmd,
++ void __user *buf)
++{
++ struct kdbus_handle *handle = file->private_data;
++ struct kdbus_node *node = file_inode(file)->i_private;
++ struct kdbus_ep *ep, *file_ep = kdbus_ep_from_node(node);
++ struct kdbus_conn *conn;
++ int ret = 0;
++
++ if (!kdbus_node_acquire(node))
++ return -ESHUTDOWN;
++
++ switch (cmd) {
++ case KDBUS_CMD_ENDPOINT_MAKE:
++ /* creating custom endpoints is a privileged operation */
++ if (!handle->privileged) {
++ ret = -EPERM;
++ break;
++ }
++
++ ep = kdbus_cmd_ep_make(file_ep->bus, buf);
++ if (IS_ERR_OR_NULL(ep)) {
++ ret = PTR_ERR_OR_ZERO(ep);
++ break;
++ }
++
++ handle->type = KDBUS_HANDLE_EP_OWNER;
++ handle->ep_owner = ep;
++ break;
++
++ case KDBUS_CMD_HELLO:
++ conn = kdbus_cmd_hello(file_ep, handle->privileged, buf);
++ if (IS_ERR_OR_NULL(conn)) {
++ ret = PTR_ERR_OR_ZERO(conn);
++ break;
++ }
++
++ handle->type = KDBUS_HANDLE_CONNECTED;
++ handle->conn = conn;
++ break;
++
++ default:
++ ret = -EBADFD;
++ break;
++ }
++
++ kdbus_node_release(node);
++ return ret;
++}
++
++static long kdbus_handle_ioctl_ep_owner(struct file *file, unsigned int command,
++ void __user *buf)
++{
++ struct kdbus_handle *handle = file->private_data;
++ struct kdbus_ep *ep = handle->ep_owner;
++ int ret;
++
++ if (!kdbus_node_acquire(&ep->node))
++ return -ESHUTDOWN;
++
++ switch (command) {
++ case KDBUS_CMD_ENDPOINT_UPDATE:
++ ret = kdbus_cmd_ep_update(ep, buf);
++ break;
++ default:
++ ret = -EBADFD;
++ break;
++ }
++
++ kdbus_node_release(&ep->node);
++ return ret;
++}
++
++static long kdbus_handle_ioctl_connected(struct file *file,
++ unsigned int command, void __user *buf)
++{
++ struct kdbus_handle *handle = file->private_data;
++ struct kdbus_conn *conn = handle->conn;
++ struct kdbus_conn *release_conn = NULL;
++ int ret;
++
++ release_conn = conn;
++ ret = kdbus_conn_acquire(release_conn);
++ if (ret < 0)
++ return ret;
++
++ switch (command) {
++ case KDBUS_CMD_BYEBYE:
++ /*
++ * BYEBYE is special; we must not acquire a connection when
++ * calling into kdbus_conn_disconnect() or we will deadlock,
++ * because kdbus_conn_disconnect() will wait for all acquired
++ * references to be dropped.
++ */
++ kdbus_conn_release(release_conn);
++ release_conn = NULL;
++ ret = kdbus_cmd_byebye_unlocked(conn, buf);
++ break;
++ case KDBUS_CMD_NAME_ACQUIRE:
++ ret = kdbus_cmd_name_acquire(conn, buf);
++ break;
++ case KDBUS_CMD_NAME_RELEASE:
++ ret = kdbus_cmd_name_release(conn, buf);
++ break;
++ case KDBUS_CMD_LIST:
++ ret = kdbus_cmd_list(conn, buf);
++ break;
++ case KDBUS_CMD_CONN_INFO:
++ ret = kdbus_cmd_conn_info(conn, buf);
++ break;
++ case KDBUS_CMD_BUS_CREATOR_INFO:
++ ret = kdbus_cmd_bus_creator_info(conn, buf);
++ break;
++ case KDBUS_CMD_UPDATE:
++ ret = kdbus_cmd_update(conn, buf);
++ break;
++ case KDBUS_CMD_MATCH_ADD:
++ ret = kdbus_cmd_match_add(conn, buf);
++ break;
++ case KDBUS_CMD_MATCH_REMOVE:
++ ret = kdbus_cmd_match_remove(conn, buf);
++ break;
++ case KDBUS_CMD_SEND:
++ ret = kdbus_cmd_send(conn, file, buf);
++ break;
++ case KDBUS_CMD_RECV:
++ ret = kdbus_cmd_recv(conn, buf);
++ break;
++ case KDBUS_CMD_FREE:
++ ret = kdbus_cmd_free(conn, buf);
++ break;
++ default:
++ ret = -EBADFD;
++ break;
++ }
++
++ kdbus_conn_release(release_conn);
++ return ret;
++}
++
++static long kdbus_handle_ioctl(struct file *file, unsigned int cmd,
++ unsigned long arg)
++{
++ struct kdbus_handle *handle = file->private_data;
++ struct kdbus_node *node = kdbus_node_from_inode(file_inode(file));
++ void __user *argp = (void __user *)arg;
++ long ret = -EBADFD;
++
++ switch (cmd) {
++ case KDBUS_CMD_BUS_MAKE:
++ case KDBUS_CMD_ENDPOINT_MAKE:
++ case KDBUS_CMD_HELLO:
++ /* bail out early if already typed */
++ if (handle->type != KDBUS_HANDLE_NONE)
++ break;
++
++ down_write(&handle->rwlock);
++ if (handle->type == KDBUS_HANDLE_NONE) {
++ if (node->type == KDBUS_NODE_CONTROL)
++ ret = kdbus_handle_ioctl_control(file, cmd,
++ argp);
++ else if (node->type == KDBUS_NODE_ENDPOINT)
++ ret = kdbus_handle_ioctl_ep(file, cmd, argp);
++ }
++ up_write(&handle->rwlock);
++ break;
++
++ case KDBUS_CMD_ENDPOINT_UPDATE:
++ case KDBUS_CMD_BYEBYE:
++ case KDBUS_CMD_NAME_ACQUIRE:
++ case KDBUS_CMD_NAME_RELEASE:
++ case KDBUS_CMD_LIST:
++ case KDBUS_CMD_CONN_INFO:
++ case KDBUS_CMD_BUS_CREATOR_INFO:
++ case KDBUS_CMD_UPDATE:
++ case KDBUS_CMD_MATCH_ADD:
++ case KDBUS_CMD_MATCH_REMOVE:
++ case KDBUS_CMD_SEND:
++ case KDBUS_CMD_RECV:
++ case KDBUS_CMD_FREE:
++ down_read(&handle->rwlock);
++ if (handle->type == KDBUS_HANDLE_EP_OWNER)
++ ret = kdbus_handle_ioctl_ep_owner(file, cmd, argp);
++ else if (handle->type == KDBUS_HANDLE_CONNECTED)
++ ret = kdbus_handle_ioctl_connected(file, cmd, argp);
++ up_read(&handle->rwlock);
++ break;
++ default:
++ ret = -ENOTTY;
++ break;
++ }
++
++ return ret < 0 ? ret : 0;
++}
++
++static unsigned int kdbus_handle_poll(struct file *file,
++ struct poll_table_struct *wait)
++{
++ struct kdbus_handle *handle = file->private_data;
++ unsigned int mask = POLLOUT | POLLWRNORM;
++ int ret;
++
++ /* Only a connected endpoint can read/write data */
++ down_read(&handle->rwlock);
++ if (handle->type != KDBUS_HANDLE_CONNECTED) {
++ up_read(&handle->rwlock);
++ return POLLERR | POLLHUP;
++ }
++ up_read(&handle->rwlock);
++
++ ret = kdbus_conn_acquire(handle->conn);
++ if (ret < 0)
++ return POLLERR | POLLHUP;
++
++ poll_wait(file, &handle->conn->wait, wait);
++
++ if (!list_empty(&handle->conn->queue.msg_list) ||
++ atomic_read(&handle->conn->lost_count) > 0)
++ mask |= POLLIN | POLLRDNORM;
++
++ kdbus_conn_release(handle->conn);
++
++ return mask;
++}
++
++static int kdbus_handle_mmap(struct file *file, struct vm_area_struct *vma)
++{
++ struct kdbus_handle *handle = file->private_data;
++ int ret = -EBADFD;
++
++ if (down_read_trylock(&handle->rwlock)) {
++ if (handle->type == KDBUS_HANDLE_CONNECTED)
++ ret = kdbus_pool_mmap(handle->conn->pool, vma);
++ up_read(&handle->rwlock);
++ }
++ return ret;
++}
++
++const struct file_operations kdbus_handle_ops = {
++ .owner = THIS_MODULE,
++ .open = kdbus_handle_open,
++ .release = kdbus_handle_release,
++ .poll = kdbus_handle_poll,
++ .llseek = noop_llseek,
++ .unlocked_ioctl = kdbus_handle_ioctl,
++ .mmap = kdbus_handle_mmap,
++#ifdef CONFIG_COMPAT
++ .compat_ioctl = kdbus_handle_ioctl,
++#endif
++};
+diff --git a/ipc/kdbus/handle.h b/ipc/kdbus/handle.h
+new file mode 100644
+index 0000000..93a372d
+--- /dev/null
++++ b/ipc/kdbus/handle.h
+@@ -0,0 +1,85 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_HANDLE_H
++#define __KDBUS_HANDLE_H
++
++#include <linux/fs.h>
++#include <uapi/linux/kdbus.h>
++
++extern const struct file_operations kdbus_handle_ops;
++
++/**
++ * kdbus_arg - information and state of a single ioctl command item
++ * @type: item type
++ * @item: set by the parser to the first found item of this type
++ * @multiple: whether multiple items of this type are allowed
++ * @mandatory: whether at least one item of this type is required
++ *
++ * This structure describes a single item in an ioctl command payload. The
++ * caller has to pre-fill the type and flags, the parser will then use this
++ * information to verify the ioctl payload. @item is set by the parser to point
++ * to the first occurrence of the item.
++ */
++struct kdbus_arg {
++ u64 type;
++ struct kdbus_item *item;
++ bool multiple : 1;
++ bool mandatory : 1;
++};
++
++/**
++ * kdbus_args - information and state of ioctl command parser
++ * @allowed_flags: set of flags this command supports
++ * @argc: number of items in @argv
++ * @argv: array of items this command supports
++ * @user: set by parser to user-space location of current command
++ * @cmd: set by parser to kernel copy of command payload
++ * @items: points to item array in @cmd
++ * @items_size: size of @items in bytes
++ *
++ * This structure is used to parse ioctl command payloads on each invocation.
++ * The ioctl handler has to pre-fill the flags and allowed items before passing
++ * the object to kdbus_args_parse(). The parser will copy the command payload
++ * into kernel-space and verify the correctness of the data.
++ */
++struct kdbus_args {
++ u64 allowed_flags;
++ size_t argc;
++ struct kdbus_arg *argv;
++
++ struct kdbus_cmd __user *user;
++ struct kdbus_cmd *cmd;
++
++ struct kdbus_item *items;
++ size_t items_size;
++};
++
++int __kdbus_args_parse(struct kdbus_args *args, void __user *argp,
++ size_t type_size, size_t items_offset, void **out);
++int kdbus_args_clear(struct kdbus_args *args, int ret);
++
++#define kdbus_args_parse(_args, _argp, _v) \
++ ({ \
++ BUILD_BUG_ON(offsetof(typeof(**(_v)), size) != \
++ offsetof(struct kdbus_cmd, size)); \
++ BUILD_BUG_ON(offsetof(typeof(**(_v)), flags) != \
++ offsetof(struct kdbus_cmd, flags)); \
++ BUILD_BUG_ON(offsetof(typeof(**(_v)), return_flags) != \
++ offsetof(struct kdbus_cmd, return_flags)); \
++ __kdbus_args_parse((_args), (_argp), sizeof(**(_v)), \
++ offsetof(typeof(**(_v)), items), \
++ (void **)(_v)); \
++ })
++
++#endif
+diff --git a/ipc/kdbus/item.c b/ipc/kdbus/item.c
+new file mode 100644
+index 0000000..745ad54
+--- /dev/null
++++ b/ipc/kdbus/item.c
+@@ -0,0 +1,339 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/ctype.h>
++#include <linux/fs.h>
++#include <linux/string.h>
++
++#include "item.h"
++#include "limits.h"
++#include "util.h"
++
++/*
++ * This verifies the string at position @str with size @size is properly
++ * zero-terminated and does not contain a 0-byte but at the end.
++ */
++static bool kdbus_str_valid(const char *str, size_t size)
++{
++ return size > 0 && memchr(str, '\0', size) == str + size - 1;
++}
++
++/**
++ * kdbus_item_validate_name() - validate an item containing a name
++ * @item: Item to validate
++ *
++ * Return: zero on success or an negative error code on failure
++ */
++int kdbus_item_validate_name(const struct kdbus_item *item)
++{
++ const char *name = item->str;
++ unsigned int i;
++ size_t len;
++
++ if (item->size < KDBUS_ITEM_HEADER_SIZE + 2)
++ return -EINVAL;
++
++ if (item->size > KDBUS_ITEM_HEADER_SIZE +
++ KDBUS_SYSNAME_MAX_LEN + 1)
++ return -ENAMETOOLONG;
++
++ if (!kdbus_str_valid(name, KDBUS_ITEM_PAYLOAD_SIZE(item)))
++ return -EINVAL;
++
++ len = strlen(name);
++ if (len == 0)
++ return -EINVAL;
++
++ for (i = 0; i < len; i++) {
++ if (isalpha(name[i]))
++ continue;
++ if (isdigit(name[i]))
++ continue;
++ if (name[i] == '_')
++ continue;
++ if (i > 0 && i + 1 < len && (name[i] == '-' || name[i] == '.'))
++ continue;
++
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++/**
++ * kdbus_item_validate() - validate a single item
++ * @item: item to validate
++ *
++ * Return: 0 if item is valid, negative error code if not.
++ */
++int kdbus_item_validate(const struct kdbus_item *item)
++{
++ size_t payload_size = KDBUS_ITEM_PAYLOAD_SIZE(item);
++ size_t l;
++ int ret;
++
++ BUILD_BUG_ON(KDBUS_ITEM_HEADER_SIZE !=
++ sizeof(struct kdbus_item_header));
++
++ if (item->size < KDBUS_ITEM_HEADER_SIZE)
++ return -EINVAL;
++
++ switch (item->type) {
++ case KDBUS_ITEM_NEGOTIATE:
++ if (payload_size % sizeof(u64) != 0)
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_PAYLOAD_VEC:
++ if (payload_size != sizeof(struct kdbus_vec))
++ return -EINVAL;
++ if (item->vec.size == 0 || item->vec.size > SIZE_MAX)
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_PAYLOAD_OFF:
++ if (payload_size != sizeof(struct kdbus_vec))
++ return -EINVAL;
++ if (item->vec.size == 0 || item->vec.size > SIZE_MAX)
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_PAYLOAD_MEMFD:
++ if (payload_size != sizeof(struct kdbus_memfd))
++ return -EINVAL;
++ if (item->memfd.size == 0 || item->memfd.size > SIZE_MAX)
++ return -EINVAL;
++ if (item->memfd.fd < 0)
++ return -EBADF;
++ break;
++
++ case KDBUS_ITEM_FDS:
++ if (payload_size % sizeof(int) != 0)
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_CANCEL_FD:
++ if (payload_size != sizeof(int))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_BLOOM_PARAMETER:
++ if (payload_size != sizeof(struct kdbus_bloom_parameter))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_BLOOM_FILTER:
++ /* followed by the bloom-mask, depends on the bloom-size */
++ if (payload_size < sizeof(struct kdbus_bloom_filter))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_BLOOM_MASK:
++ /* size depends on bloom-size of bus */
++ break;
++
++ case KDBUS_ITEM_CONN_DESCRIPTION:
++ case KDBUS_ITEM_MAKE_NAME:
++ ret = kdbus_item_validate_name(item);
++ if (ret < 0)
++ return ret;
++ break;
++
++ case KDBUS_ITEM_ATTACH_FLAGS_SEND:
++ case KDBUS_ITEM_ATTACH_FLAGS_RECV:
++ case KDBUS_ITEM_ID:
++ if (payload_size != sizeof(u64))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_TIMESTAMP:
++ if (payload_size != sizeof(struct kdbus_timestamp))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_CREDS:
++ if (payload_size != sizeof(struct kdbus_creds))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_AUXGROUPS:
++ if (payload_size % sizeof(u32) != 0)
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_NAME:
++ case KDBUS_ITEM_DST_NAME:
++ case KDBUS_ITEM_PID_COMM:
++ case KDBUS_ITEM_TID_COMM:
++ case KDBUS_ITEM_EXE:
++ case KDBUS_ITEM_CMDLINE:
++ case KDBUS_ITEM_CGROUP:
++ case KDBUS_ITEM_SECLABEL:
++ if (!kdbus_str_valid(item->str, payload_size))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_CAPS:
++ if (payload_size < sizeof(u32))
++ return -EINVAL;
++ if (payload_size < sizeof(u32) +
++ 4 * CAP_TO_INDEX(item->caps.last_cap) * sizeof(u32))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_AUDIT:
++ if (payload_size != sizeof(struct kdbus_audit))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_POLICY_ACCESS:
++ if (payload_size != sizeof(struct kdbus_policy_access))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_NAME_ADD:
++ case KDBUS_ITEM_NAME_REMOVE:
++ case KDBUS_ITEM_NAME_CHANGE:
++ if (payload_size < sizeof(struct kdbus_notify_name_change))
++ return -EINVAL;
++ l = payload_size - offsetof(struct kdbus_notify_name_change,
++ name);
++ if (l > 0 && !kdbus_str_valid(item->name_change.name, l))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_ID_ADD:
++ case KDBUS_ITEM_ID_REMOVE:
++ if (payload_size != sizeof(struct kdbus_notify_id_change))
++ return -EINVAL;
++ break;
++
++ case KDBUS_ITEM_REPLY_TIMEOUT:
++ case KDBUS_ITEM_REPLY_DEAD:
++ if (payload_size != 0)
++ return -EINVAL;
++ break;
++
++ default:
++ break;
++ }
++
++ return 0;
++}
++
++/**
++ * kdbus_items_validate() - validate items passed by user-space
++ * @items: items to validate
++ * @items_size: number of items
++ *
++ * This verifies that the passed items pointer is consistent and valid.
++ * Furthermore, each item is checked for:
++ * - valid "size" value
++ * - payload is of expected type
++ * - payload is fully included in the item
++ * - string payloads are zero-terminated
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_items_validate(const struct kdbus_item *items, size_t items_size)
++{
++ const struct kdbus_item *item;
++ int ret;
++
++ KDBUS_ITEMS_FOREACH(item, items, items_size) {
++ if (!KDBUS_ITEM_VALID(item, items, items_size))
++ return -EINVAL;
++
++ ret = kdbus_item_validate(item);
++ if (ret < 0)
++ return ret;
++ }
++
++ if (!KDBUS_ITEMS_END(item, items, items_size))
++ return -EINVAL;
++
++ return 0;
++}
++
++static struct kdbus_item *kdbus_items_get(const struct kdbus_item *items,
++ size_t items_size,
++ unsigned int item_type)
++{
++ const struct kdbus_item *iter, *found = NULL;
++
++ KDBUS_ITEMS_FOREACH(iter, items, items_size) {
++ if (iter->type == item_type) {
++ if (found)
++ return ERR_PTR(-EEXIST);
++ found = iter;
++ }
++ }
++
++ return (struct kdbus_item *)found ? : ERR_PTR(-EBADMSG);
++}
++
++/**
++ * kdbus_items_get_str() - get string from a list of items
++ * @items: The items to walk
++ * @items_size: The size of all items
++ * @item_type: The item type to look for
++ *
++ * This function walks a list of items and searches for items of type
++ * @item_type. If it finds exactly one such item, @str_ret will be set to
++ * the .str member of the item.
++ *
++ * Return: the string, if the item was found exactly once, ERR_PTR(-EEXIST)
++ * if the item was found more than once, and ERR_PTR(-EBADMSG) if there was
++ * no item of the given type.
++ */
++const char *kdbus_items_get_str(const struct kdbus_item *items,
++ size_t items_size,
++ unsigned int item_type)
++{
++ const struct kdbus_item *item;
++
++ item = kdbus_items_get(items, items_size, item_type);
++ return IS_ERR(item) ? ERR_CAST(item) : item->str;
++}
++
++/**
++ * kdbus_item_set() - Set item content
++ * @item: The item to modify
++ * @type: The item type to set (KDBUS_ITEM_*)
++ * @data: Data to copy to item->data, may be %NULL
++ * @len: Number of bytes in @data
++ *
++ * This sets type, size and data fields of an item. If @data is NULL, the data
++ * memory is cleared.
++ *
++ * Note that you must align your @data memory to 8 bytes. Trailing padding (in
++ * case @len is not 8byte aligned) is cleared by this call.
++ *
++ * Returns: Pointer to the following item.
++ */
++struct kdbus_item *kdbus_item_set(struct kdbus_item *item, u64 type,
++ const void *data, size_t len)
++{
++ item->type = type;
++ item->size = KDBUS_ITEM_HEADER_SIZE + len;
++
++ if (data) {
++ memcpy(item->data, data, len);
++ memset(item->data + len, 0, KDBUS_ALIGN8(len) - len);
++ } else {
++ memset(item->data, 0, KDBUS_ALIGN8(len));
++ }
++
++ return KDBUS_ITEM_NEXT(item);
++}
+diff --git a/ipc/kdbus/item.h b/ipc/kdbus/item.h
+new file mode 100644
+index 0000000..eeefd8b
+--- /dev/null
++++ b/ipc/kdbus/item.h
+@@ -0,0 +1,64 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_ITEM_H
++#define __KDBUS_ITEM_H
++
++#include <linux/kernel.h>
++#include <uapi/linux/kdbus.h>
++
++#include "util.h"
++
++/* generic access and iterators over a stream of items */
++#define KDBUS_ITEM_NEXT(_i) (typeof(_i))(((u8 *)_i) + KDBUS_ALIGN8((_i)->size))
++#define KDBUS_ITEMS_SIZE(_h, _is) ((_h)->size - offsetof(typeof(*_h), _is))
++#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
++#define KDBUS_ITEM_SIZE(_s) KDBUS_ALIGN8(KDBUS_ITEM_HEADER_SIZE + (_s))
++#define KDBUS_ITEM_PAYLOAD_SIZE(_i) ((_i)->size - KDBUS_ITEM_HEADER_SIZE)
++
++#define KDBUS_ITEMS_FOREACH(_i, _is, _s) \
++ for (_i = _is; \
++ ((u8 *)(_i) < (u8 *)(_is) + (_s)) && \
++ ((u8 *)(_i) >= (u8 *)(_is)); \
++ _i = KDBUS_ITEM_NEXT(_i))
++
++#define KDBUS_ITEM_VALID(_i, _is, _s) \
++ ((_i)->size >= KDBUS_ITEM_HEADER_SIZE && \
++ (u8 *)(_i) + (_i)->size > (u8 *)(_i) && \
++ (u8 *)(_i) + (_i)->size <= (u8 *)(_is) + (_s) && \
++ (u8 *)(_i) >= (u8 *)(_is))
++
++#define KDBUS_ITEMS_END(_i, _is, _s) \
++ ((u8 *)_i == ((u8 *)(_is) + KDBUS_ALIGN8(_s)))
++
++/**
++ * struct kdbus_item_header - Describes the fix part of an item
++ * @size: The total size of the item
++ * @type: The item type, one of KDBUS_ITEM_*
++ */
++struct kdbus_item_header {
++ u64 size;
++ u64 type;
++};
++
++int kdbus_item_validate_name(const struct kdbus_item *item);
++int kdbus_item_validate(const struct kdbus_item *item);
++int kdbus_items_validate(const struct kdbus_item *items, size_t items_size);
++const char *kdbus_items_get_str(const struct kdbus_item *items,
++ size_t items_size,
++ unsigned int item_type);
++struct kdbus_item *kdbus_item_set(struct kdbus_item *item, u64 type,
++ const void *data, size_t len);
++
++#endif
+diff --git a/ipc/kdbus/limits.h b/ipc/kdbus/limits.h
+new file mode 100644
+index 0000000..6450f58
+--- /dev/null
++++ b/ipc/kdbus/limits.h
+@@ -0,0 +1,64 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_DEFAULTS_H
++#define __KDBUS_DEFAULTS_H
++
++#include <linux/kernel.h>
++
++/* maximum size of message header and items */
++#define KDBUS_MSG_MAX_SIZE SZ_8K
++
++/* maximum number of message items */
++#define KDBUS_MSG_MAX_ITEMS 128
++
++/* maximum number of memfd items per message */
++#define KDBUS_MSG_MAX_MEMFD_ITEMS 16
++
++/* max size of ioctl command data */
++#define KDBUS_CMD_MAX_SIZE SZ_32K
++
++/* maximum number of inflight fds in a target queue per user */
++#define KDBUS_CONN_MAX_FDS_PER_USER 16
++
++/* maximum message payload size */
++#define KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE SZ_2M
++
++/* maximum size of bloom bit field in bytes */
++#define KDBUS_BUS_BLOOM_MAX_SIZE SZ_4K
++
++/* maximum length of well-known bus name */
++#define KDBUS_NAME_MAX_LEN 255
++
++/* maximum length of bus, domain, ep name */
++#define KDBUS_SYSNAME_MAX_LEN 63
++
++/* maximum number of matches per connection */
++#define KDBUS_MATCH_MAX 256
++
++/* maximum number of queued messages from the same individual user */
++#define KDBUS_CONN_MAX_MSGS 256
++
++/* maximum number of well-known names per connection */
++#define KDBUS_CONN_MAX_NAMES 256
++
++/* maximum number of queued requests waiting for a reply */
++#define KDBUS_CONN_MAX_REQUESTS_PENDING 128
++
++/* maximum number of connections per user in one domain */
++#define KDBUS_USER_MAX_CONN 1024
++
++/* maximum number of buses per user in one domain */
++#define KDBUS_USER_MAX_BUSES 16
++
++#endif
+diff --git a/ipc/kdbus/main.c b/ipc/kdbus/main.c
+new file mode 100644
+index 0000000..785f529
+--- /dev/null
++++ b/ipc/kdbus/main.c
+@@ -0,0 +1,125 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++#include <linux/fs.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++
++#include "util.h"
++#include "fs.h"
++#include "handle.h"
++#include "metadata.h"
++#include "node.h"
++
++/*
++ * This is a simplified outline of the internal kdbus object relations, for
++ * those interested in the inner life of the driver implementation.
++ *
++ * From a mount point's (domain's) perspective:
++ *
++ * struct kdbus_domain
++ * |» struct kdbus_user *user (many, owned)
++ * '» struct kdbus_node node (embedded)
++ * |» struct kdbus_node children (many, referenced)
++ * |» struct kdbus_node *parent (pinned)
++ * '» struct kdbus_bus (many, pinned)
++ * |» struct kdbus_node node (embedded)
++ * '» struct kdbus_ep (many, pinned)
++ * |» struct kdbus_node node (embedded)
++ * |» struct kdbus_bus *bus (pinned)
++ * |» struct kdbus_conn conn_list (many, pinned)
++ * | |» struct kdbus_ep *ep (pinned)
++ * | |» struct kdbus_name_entry *activator_of (owned)
++ * | |» struct kdbus_match_db *match_db (owned)
++ * | |» struct kdbus_meta *meta (owned)
++ * | |» struct kdbus_match_db *match_db (owned)
++ * | | '» struct kdbus_match_entry (many, owned)
++ * | |
++ * | |» struct kdbus_pool *pool (owned)
++ * | | '» struct kdbus_pool_slice *slices (many, owned)
++ * | | '» struct kdbus_pool *pool (pinned)
++ * | |
++ * | |» struct kdbus_user *user (pinned)
++ * | `» struct kdbus_queue_entry entries (many, embedded)
++ * | |» struct kdbus_pool_slice *slice (pinned)
++ * | |» struct kdbus_conn_reply *reply (owned)
++ * | '» struct kdbus_user *user (pinned)
++ * |
++ * '» struct kdbus_user *user (pinned)
++ * '» struct kdbus_policy_db policy_db (embedded)
++ * |» struct kdbus_policy_db_entry (many, owned)
++ * | |» struct kdbus_conn (pinned)
++ * | '» struct kdbus_ep (pinned)
++ * |
++ * '» struct kdbus_policy_db_cache_entry (many, owned)
++ * '» struct kdbus_conn (pinned)
++ *
++ * For the life-time of a file descriptor derived from calling open() on a file
++ * inside the mount point:
++ *
++ * struct kdbus_handle
++ * |» struct kdbus_meta *meta (owned)
++ * |» struct kdbus_ep *ep (pinned)
++ * |» struct kdbus_conn *conn (owned)
++ * '» struct kdbus_ep *ep (owned)
++ */
++
++/* kdbus mount-point /sys/fs/kdbus */
++static struct kobject *kdbus_dir;
++
++/* global module option to apply a mask to exported metadata */
++unsigned long long kdbus_meta_attach_mask = KDBUS_ATTACH_TIMESTAMP |
++ KDBUS_ATTACH_CREDS |
++ KDBUS_ATTACH_PIDS |
++ KDBUS_ATTACH_AUXGROUPS |
++ KDBUS_ATTACH_NAMES |
++ KDBUS_ATTACH_SECLABEL |
++ KDBUS_ATTACH_CONN_DESCRIPTION;
++MODULE_PARM_DESC(attach_flags_mask, "Attach-flags mask for exported metadata");
++module_param_named(attach_flags_mask, kdbus_meta_attach_mask, ullong, 0644);
++
++static int __init kdbus_init(void)
++{
++ int ret;
++
++ kdbus_dir = kobject_create_and_add(KBUILD_MODNAME, fs_kobj);
++ if (!kdbus_dir)
++ return -ENOMEM;
++
++ ret = kdbus_fs_init();
++ if (ret < 0) {
++ pr_err("cannot register filesystem: %d\n", ret);
++ goto exit_dir;
++ }
++
++ pr_info("initialized\n");
++ return 0;
++
++exit_dir:
++ kobject_put(kdbus_dir);
++ return ret;
++}
++
++static void __exit kdbus_exit(void)
++{
++ kdbus_fs_exit();
++ kobject_put(kdbus_dir);
++}
++
++module_init(kdbus_init);
++module_exit(kdbus_exit);
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("D-Bus, powerful, easy to use interprocess communication");
++MODULE_ALIAS_FS(KBUILD_MODNAME "fs");
+diff --git a/ipc/kdbus/match.c b/ipc/kdbus/match.c
+new file mode 100644
+index 0000000..30cec1c
+--- /dev/null
++++ b/ipc/kdbus/match.c
+@@ -0,0 +1,559 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/fs.h>
++#include <linux/hash.h>
++#include <linux/init.h>
++#include <linux/mutex.h>
++#include <linux/sched.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "endpoint.h"
++#include "handle.h"
++#include "item.h"
++#include "match.h"
++#include "message.h"
++#include "names.h"
++
++/**
++ * struct kdbus_match_db - message filters
++ * @entries_list: List of matches
++ * @mdb_rwlock: Match data lock
++ * @entries_count: Number of entries in database
++ */
++struct kdbus_match_db {
++ struct list_head entries_list;
++ struct rw_semaphore mdb_rwlock;
++ unsigned int entries_count;
++};
++
++/**
++ * struct kdbus_match_entry - a match database entry
++ * @cookie: User-supplied cookie to lookup the entry
++ * @list_entry: The list entry element for the db list
++ * @rules_list: The list head for tracking rules of this entry
++ */
++struct kdbus_match_entry {
++ u64 cookie;
++ struct list_head list_entry;
++ struct list_head rules_list;
++};
++
++/**
++ * struct kdbus_bloom_mask - mask to match against filter
++ * @generations: Number of generations carried
++ * @data: Array of bloom bit fields
++ */
++struct kdbus_bloom_mask {
++ u64 generations;
++ u64 *data;
++};
++
++/**
++ * struct kdbus_match_rule - a rule appended to a match entry
++ * @type: An item type to match agains
++ * @bloom_mask: Bloom mask to match a message's filter against, used
++ * with KDBUS_ITEM_BLOOM_MASK
++ * @name: Name to match against, used with KDBUS_ITEM_NAME,
++ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE}
++ * @old_id: ID to match against, used with
++ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE},
++ * KDBUS_ITEM_ID_REMOVE
++ * @new_id: ID to match against, used with
++ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE},
++ * KDBUS_ITEM_ID_REMOVE
++ * @src_id: ID to match against, used with KDBUS_ITEM_ID
++ * @rules_entry: Entry in the entry's rules list
++ */
++struct kdbus_match_rule {
++ u64 type;
++ union {
++ struct kdbus_bloom_mask bloom_mask;
++ struct {
++ char *name;
++ u64 old_id;
++ u64 new_id;
++ };
++ u64 src_id;
++ };
++ struct list_head rules_entry;
++};
++
++static void kdbus_match_rule_free(struct kdbus_match_rule *rule)
++{
++ if (!rule)
++ return;
++
++ switch (rule->type) {
++ case KDBUS_ITEM_BLOOM_MASK:
++ kfree(rule->bloom_mask.data);
++ break;
++
++ case KDBUS_ITEM_NAME:
++ case KDBUS_ITEM_NAME_ADD:
++ case KDBUS_ITEM_NAME_REMOVE:
++ case KDBUS_ITEM_NAME_CHANGE:
++ kfree(rule->name);
++ break;
++
++ case KDBUS_ITEM_ID:
++ case KDBUS_ITEM_ID_ADD:
++ case KDBUS_ITEM_ID_REMOVE:
++ break;
++
++ default:
++ BUG();
++ }
++
++ list_del(&rule->rules_entry);
++ kfree(rule);
++}
++
++static void kdbus_match_entry_free(struct kdbus_match_entry *entry)
++{
++ struct kdbus_match_rule *r, *tmp;
++
++ if (!entry)
++ return;
++
++ list_for_each_entry_safe(r, tmp, &entry->rules_list, rules_entry)
++ kdbus_match_rule_free(r);
++
++ list_del(&entry->list_entry);
++ kfree(entry);
++}
++
++/**
++ * kdbus_match_db_free() - free match db resources
++ * @mdb: The match database
++ */
++void kdbus_match_db_free(struct kdbus_match_db *mdb)
++{
++ struct kdbus_match_entry *entry, *tmp;
++
++ if (!mdb)
++ return;
++
++ list_for_each_entry_safe(entry, tmp, &mdb->entries_list, list_entry)
++ kdbus_match_entry_free(entry);
++
++ kfree(mdb);
++}
++
++/**
++ * kdbus_match_db_new() - create a new match database
++ *
++ * Return: a new kdbus_match_db on success, ERR_PTR on failure.
++ */
++struct kdbus_match_db *kdbus_match_db_new(void)
++{
++ struct kdbus_match_db *d;
++
++ d = kzalloc(sizeof(*d), GFP_KERNEL);
++ if (!d)
++ return ERR_PTR(-ENOMEM);
++
++ init_rwsem(&d->mdb_rwlock);
++ INIT_LIST_HEAD(&d->entries_list);
++
++ return d;
++}
++
++static bool kdbus_match_bloom(const struct kdbus_bloom_filter *filter,
++ const struct kdbus_bloom_mask *mask,
++ const struct kdbus_conn *conn)
++{
++ size_t n = conn->ep->bus->bloom.size / sizeof(u64);
++ const u64 *m;
++ size_t i;
++
++ /*
++ * The message's filter carries a generation identifier, the
++ * match's mask possibly carries an array of multiple generations
++ * of the mask. Select the mask with the closest match of the
++ * filter's generation.
++ */
++ m = mask->data + (min(filter->generation, mask->generations - 1) * n);
++
++ /*
++ * The message's filter contains the messages properties,
++ * the match's mask contains the properties to look for in the
++ * message. Check the mask bit field against the filter bit field,
++ * if the message possibly carries the properties the connection
++ * has subscribed to.
++ */
++ for (i = 0; i < n; i++)
++ if ((filter->data[i] & m[i]) != m[i])
++ return false;
++
++ return true;
++}
++
++static bool kdbus_match_rules(const struct kdbus_match_entry *entry,
++ struct kdbus_conn *conn_src,
++ struct kdbus_kmsg *kmsg)
++{
++ struct kdbus_match_rule *r;
++
++ if (conn_src)
++ lockdep_assert_held(&conn_src->ep->bus->name_registry->rwlock);
++
++ /*
++ * Walk all the rules and bail out immediately
++ * if any of them is unsatisfied.
++ */
++
++ list_for_each_entry(r, &entry->rules_list, rules_entry) {
++ if (conn_src) {
++ /* messages from userspace */
++
++ switch (r->type) {
++ case KDBUS_ITEM_BLOOM_MASK:
++ if (!kdbus_match_bloom(kmsg->bloom_filter,
++ &r->bloom_mask,
++ conn_src))
++ return false;
++ break;
++
++ case KDBUS_ITEM_ID:
++ if (r->src_id != conn_src->id &&
++ r->src_id != KDBUS_MATCH_ID_ANY)
++ return false;
++
++ break;
++
++ case KDBUS_ITEM_NAME:
++ if (!kdbus_conn_has_name(conn_src, r->name))
++ return false;
++
++ break;
++
++ default:
++ return false;
++ }
++ } else {
++ /* kernel notifications */
++
++ if (kmsg->notify_type != r->type)
++ return false;
++
++ switch (r->type) {
++ case KDBUS_ITEM_ID_ADD:
++ if (r->new_id != KDBUS_MATCH_ID_ANY &&
++ r->new_id != kmsg->notify_new_id)
++ return false;
++
++ break;
++
++ case KDBUS_ITEM_ID_REMOVE:
++ if (r->old_id != KDBUS_MATCH_ID_ANY &&
++ r->old_id != kmsg->notify_old_id)
++ return false;
++
++ break;
++
++ case KDBUS_ITEM_NAME_ADD:
++ case KDBUS_ITEM_NAME_CHANGE:
++ case KDBUS_ITEM_NAME_REMOVE:
++ if ((r->old_id != KDBUS_MATCH_ID_ANY &&
++ r->old_id != kmsg->notify_old_id) ||
++ (r->new_id != KDBUS_MATCH_ID_ANY &&
++ r->new_id != kmsg->notify_new_id) ||
++ (r->name && kmsg->notify_name &&
++ strcmp(r->name, kmsg->notify_name) != 0))
++ return false;
++
++ break;
++
++ default:
++ return false;
++ }
++ }
++ }
++
++ return true;
++}
++
++/**
++ * kdbus_match_db_match_kmsg() - match a kmsg object agains the database entries
++ * @mdb: The match database
++ * @conn_src: The connection object originating the message
++ * @kmsg: The kmsg to perform the match on
++ *
++ * This function will walk through all the database entries previously uploaded
++ * with kdbus_match_db_add(). As soon as any of them has an all-satisfied rule
++ * set, this function will return true.
++ *
++ * The caller must hold the registry lock of conn_src->ep->bus, in case conn_src
++ * is non-NULL.
++ *
++ * Return: true if there was a matching database entry, false otherwise.
++ */
++bool kdbus_match_db_match_kmsg(struct kdbus_match_db *mdb,
++ struct kdbus_conn *conn_src,
++ struct kdbus_kmsg *kmsg)
++{
++ struct kdbus_match_entry *entry;
++ bool matched = false;
++
++ down_read(&mdb->mdb_rwlock);
++ list_for_each_entry(entry, &mdb->entries_list, list_entry) {
++ matched = kdbus_match_rules(entry, conn_src, kmsg);
++ if (matched)
++ break;
++ }
++ up_read(&mdb->mdb_rwlock);
++
++ return matched;
++}
++
++static int kdbus_match_db_remove_unlocked(struct kdbus_match_db *mdb,
++ u64 cookie)
++{
++ struct kdbus_match_entry *entry, *tmp;
++ bool found = false;
++
++ list_for_each_entry_safe(entry, tmp, &mdb->entries_list, list_entry)
++ if (entry->cookie == cookie) {
++ kdbus_match_entry_free(entry);
++ --mdb->entries_count;
++ found = true;
++ }
++
++ return found ? 0 : -EBADSLT;
++}
++
++/**
++ * kdbus_cmd_match_add() - handle KDBUS_CMD_MATCH_ADD
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * One call to this function (or one ioctl(KDBUS_CMD_MATCH_ADD), respectively,
++ * adds one new database entry with n rules attached to it. Each rule is
++ * described with an kdbus_item, and an entry is considered matching if all
++ * its rules are satisfied.
++ *
++ * The items attached to a kdbus_cmd_match struct have the following mapping:
++ *
++ * KDBUS_ITEM_BLOOM_MASK: A bloom mask
++ * KDBUS_ITEM_NAME: A connection's source name
++ * KDBUS_ITEM_ID: A connection ID
++ * KDBUS_ITEM_NAME_ADD:
++ * KDBUS_ITEM_NAME_REMOVE:
++ * KDBUS_ITEM_NAME_CHANGE: Well-known name changes, carry
++ * kdbus_notify_name_change
++ * KDBUS_ITEM_ID_ADD:
++ * KDBUS_ITEM_ID_REMOVE: Connection ID changes, carry
++ * kdbus_notify_id_change
++ *
++ * For kdbus_notify_{id,name}_change structs, only the ID and name fields
++ * are looked at when adding an entry. The flags are unused.
++ *
++ * Also note that KDBUS_ITEM_BLOOM_MASK, KDBUS_ITEM_NAME and KDBUS_ITEM_ID
++ * are used to match messages from userspace, while the others apply to
++ * kernel-generated notifications.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_match_add(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_match_db *mdb = conn->match_db;
++ struct kdbus_match_entry *entry = NULL;
++ struct kdbus_cmd_match *cmd;
++ struct kdbus_item *item;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_BLOOM_MASK, .multiple = true },
++ { .type = KDBUS_ITEM_NAME, .multiple = true },
++ { .type = KDBUS_ITEM_ID, .multiple = true },
++ { .type = KDBUS_ITEM_NAME_ADD, .multiple = true },
++ { .type = KDBUS_ITEM_NAME_REMOVE, .multiple = true },
++ { .type = KDBUS_ITEM_NAME_CHANGE, .multiple = true },
++ { .type = KDBUS_ITEM_ID_ADD, .multiple = true },
++ { .type = KDBUS_ITEM_ID_REMOVE, .multiple = true },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_MATCH_REPLACE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ if (!kdbus_conn_is_ordinary(conn))
++ return -EOPNOTSUPP;
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
++ if (!entry) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ entry->cookie = cmd->cookie;
++ INIT_LIST_HEAD(&entry->list_entry);
++ INIT_LIST_HEAD(&entry->rules_list);
++
++ KDBUS_ITEMS_FOREACH(item, cmd->items, KDBUS_ITEMS_SIZE(cmd, items)) {
++ struct kdbus_match_rule *rule;
++ size_t size = item->size - offsetof(struct kdbus_item, data);
++
++ rule = kzalloc(sizeof(*rule), GFP_KERNEL);
++ if (!rule) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ rule->type = item->type;
++ INIT_LIST_HEAD(&rule->rules_entry);
++
++ switch (item->type) {
++ case KDBUS_ITEM_BLOOM_MASK: {
++ u64 bsize = conn->ep->bus->bloom.size;
++ u64 generations;
++ u64 remainder;
++
++ generations = div64_u64_rem(size, bsize, &remainder);
++ if (size < bsize || remainder > 0) {
++ ret = -EDOM;
++ break;
++ }
++
++ rule->bloom_mask.data = kmemdup(item->data,
++ size, GFP_KERNEL);
++ if (!rule->bloom_mask.data) {
++ ret = -ENOMEM;
++ break;
++ }
++
++ rule->bloom_mask.generations = generations;
++ break;
++ }
++
++ case KDBUS_ITEM_NAME:
++ if (!kdbus_name_is_valid(item->str, false)) {
++ ret = -EINVAL;
++ break;
++ }
++
++ rule->name = kstrdup(item->str, GFP_KERNEL);
++ if (!rule->name)
++ ret = -ENOMEM;
++
++ break;
++
++ case KDBUS_ITEM_ID:
++ rule->src_id = item->id;
++ break;
++
++ case KDBUS_ITEM_NAME_ADD:
++ case KDBUS_ITEM_NAME_REMOVE:
++ case KDBUS_ITEM_NAME_CHANGE:
++ rule->old_id = item->name_change.old_id.id;
++ rule->new_id = item->name_change.new_id.id;
++
++ if (size > sizeof(struct kdbus_notify_name_change)) {
++ rule->name = kstrdup(item->name_change.name,
++ GFP_KERNEL);
++ if (!rule->name)
++ ret = -ENOMEM;
++ }
++
++ break;
++
++ case KDBUS_ITEM_ID_ADD:
++ case KDBUS_ITEM_ID_REMOVE:
++ if (item->type == KDBUS_ITEM_ID_ADD)
++ rule->new_id = item->id_change.id;
++ else
++ rule->old_id = item->id_change.id;
++
++ break;
++ }
++
++ if (ret < 0) {
++ kdbus_match_rule_free(rule);
++ goto exit;
++ }
++
++ list_add_tail(&rule->rules_entry, &entry->rules_list);
++ }
++
++ down_write(&mdb->mdb_rwlock);
++
++ /* Remove any entry that has the same cookie as the current one. */
++ if (cmd->flags & KDBUS_MATCH_REPLACE)
++ kdbus_match_db_remove_unlocked(mdb, entry->cookie);
++
++ /*
++ * If the above removal caught any entry, there will be room for the
++ * new one.
++ */
++ if (++mdb->entries_count > KDBUS_MATCH_MAX) {
++ --mdb->entries_count;
++ ret = -EMFILE;
++ } else {
++ list_add_tail(&entry->list_entry, &mdb->entries_list);
++ entry = NULL;
++ }
++
++ up_write(&mdb->mdb_rwlock);
++
++exit:
++ kdbus_match_entry_free(entry);
++ return kdbus_args_clear(&args, ret);
++}
++
++/**
++ * kdbus_cmd_match_remove() - handle KDBUS_CMD_MATCH_REMOVE
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_match_remove(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_cmd_match *cmd;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ if (!kdbus_conn_is_ordinary(conn))
++ return -EOPNOTSUPP;
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ down_write(&conn->match_db->mdb_rwlock);
++ ret = kdbus_match_db_remove_unlocked(conn->match_db, cmd->cookie);
++ up_write(&conn->match_db->mdb_rwlock);
++
++ return kdbus_args_clear(&args, ret);
++}
+diff --git a/ipc/kdbus/match.h b/ipc/kdbus/match.h
+new file mode 100644
+index 0000000..ea42929
+--- /dev/null
++++ b/ipc/kdbus/match.h
+@@ -0,0 +1,35 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_MATCH_H
++#define __KDBUS_MATCH_H
++
++struct kdbus_conn;
++struct kdbus_kmsg;
++struct kdbus_match_db;
++
++struct kdbus_match_db *kdbus_match_db_new(void);
++void kdbus_match_db_free(struct kdbus_match_db *db);
++int kdbus_match_db_add(struct kdbus_conn *conn,
++ struct kdbus_cmd_match *cmd);
++int kdbus_match_db_remove(struct kdbus_conn *conn,
++ struct kdbus_cmd_match *cmd);
++bool kdbus_match_db_match_kmsg(struct kdbus_match_db *db,
++ struct kdbus_conn *conn_src,
++ struct kdbus_kmsg *kmsg);
++
++int kdbus_cmd_match_add(struct kdbus_conn *conn, void __user *argp);
++int kdbus_cmd_match_remove(struct kdbus_conn *conn, void __user *argp);
++
++#endif
+diff --git a/ipc/kdbus/message.c b/ipc/kdbus/message.c
+new file mode 100644
+index 0000000..8096075
+--- /dev/null
++++ b/ipc/kdbus/message.c
+@@ -0,0 +1,616 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/capability.h>
++#include <linux/cgroup.h>
++#include <linux/cred.h>
++#include <linux/file.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/sched.h>
++#include <linux/shmem_fs.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <net/sock.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "domain.h"
++#include "endpoint.h"
++#include "handle.h"
++#include "item.h"
++#include "match.h"
++#include "message.h"
++#include "names.h"
++#include "policy.h"
++
++#define KDBUS_KMSG_HEADER_SIZE offsetof(struct kdbus_kmsg, msg)
++
++static struct kdbus_msg_resources *kdbus_msg_resources_new(void)
++{
++ struct kdbus_msg_resources *r;
++
++ r = kzalloc(sizeof(*r), GFP_KERNEL);
++ if (!r)
++ return ERR_PTR(-ENOMEM);
++
++ kref_init(&r->kref);
++
++ return r;
++}
++
++static void __kdbus_msg_resources_free(struct kref *kref)
++{
++ struct kdbus_msg_resources *r =
++ container_of(kref, struct kdbus_msg_resources, kref);
++ size_t i;
++
++ for (i = 0; i < r->data_count; ++i) {
++ switch (r->data[i].type) {
++ case KDBUS_MSG_DATA_VEC:
++ /* nothing to do */
++ break;
++ case KDBUS_MSG_DATA_MEMFD:
++ if (r->data[i].memfd.file)
++ fput(r->data[i].memfd.file);
++ break;
++ }
++ }
++
++ for (i = 0; i < r->fds_count; i++)
++ if (r->fds[i])
++ fput(r->fds[i]);
++
++ kfree(r->dst_name);
++ kfree(r->data);
++ kfree(r->fds);
++ kfree(r);
++}
++
++/**
++ * kdbus_msg_resources_ref() - Acquire reference to msg resources
++ * @r: resources to acquire ref to
++ *
++ * Return: The acquired resource
++ */
++struct kdbus_msg_resources *
++kdbus_msg_resources_ref(struct kdbus_msg_resources *r)
++{
++ if (r)
++ kref_get(&r->kref);
++ return r;
++}
++
++/**
++ * kdbus_msg_resources_unref() - Drop reference to msg resources
++ * @r: resources to drop reference of
++ *
++ * Return: NULL
++ */
++struct kdbus_msg_resources *
++kdbus_msg_resources_unref(struct kdbus_msg_resources *r)
++{
++ if (r)
++ kref_put(&r->kref, __kdbus_msg_resources_free);
++ return NULL;
++}
++
++/**
++ * kdbus_kmsg_free() - free allocated message
++ * @kmsg: Message
++ */
++void kdbus_kmsg_free(struct kdbus_kmsg *kmsg)
++{
++ if (!kmsg)
++ return;
++
++ kdbus_msg_resources_unref(kmsg->res);
++ kdbus_meta_conn_unref(kmsg->conn_meta);
++ kdbus_meta_proc_unref(kmsg->proc_meta);
++ kfree(kmsg->iov);
++ kfree(kmsg);
++}
++
++/**
++ * kdbus_kmsg_new() - allocate message
++ * @bus: Bus this message is allocated on
++ * @extra_size: Additional size to reserve for data
++ *
++ * Return: new kdbus_kmsg on success, ERR_PTR on failure.
++ */
++struct kdbus_kmsg *kdbus_kmsg_new(struct kdbus_bus *bus, size_t extra_size)
++{
++ struct kdbus_kmsg *m;
++ size_t size;
++ int ret;
++
++ size = sizeof(struct kdbus_kmsg) + KDBUS_ITEM_SIZE(extra_size);
++ m = kzalloc(size, GFP_KERNEL);
++ if (!m)
++ return ERR_PTR(-ENOMEM);
++
++ m->seq = atomic64_inc_return(&bus->domain->last_id);
++ m->msg.size = size - KDBUS_KMSG_HEADER_SIZE;
++ m->msg.items[0].size = KDBUS_ITEM_SIZE(extra_size);
++
++ m->proc_meta = kdbus_meta_proc_new();
++ if (IS_ERR(m->proc_meta)) {
++ ret = PTR_ERR(m->proc_meta);
++ m->proc_meta = NULL;
++ goto exit;
++ }
++
++ m->conn_meta = kdbus_meta_conn_new();
++ if (IS_ERR(m->conn_meta)) {
++ ret = PTR_ERR(m->conn_meta);
++ m->conn_meta = NULL;
++ goto exit;
++ }
++
++ return m;
++
++exit:
++ kdbus_kmsg_free(m);
++ return ERR_PTR(ret);
++}
++
++static int kdbus_handle_check_file(struct file *file)
++{
++ struct inode *inode = file_inode(file);
++ struct socket *sock;
++
++ /*
++ * Don't allow file descriptors in the transport that themselves allow
++ * file descriptor queueing. This will eventually be allowed once both
++ * unix domain sockets and kdbus share a generic garbage collector.
++ */
++
++ if (file->f_op == &kdbus_handle_ops)
++ return -EOPNOTSUPP;
++
++ if (!S_ISSOCK(inode->i_mode))
++ return 0;
++
++ if (file->f_mode & FMODE_PATH)
++ return 0;
++
++ sock = SOCKET_I(inode);
++ if (sock->sk && sock->ops && sock->ops->family == PF_UNIX)
++ return -EOPNOTSUPP;
++
++ return 0;
++}
++
++static const char * const zeros = "\0\0\0\0\0\0\0";
++
++/*
++ * kdbus_msg_scan_items() - validate incoming data and prepare parsing
++ * @kmsg: Message
++ * @bus: Bus the message is sent over
++ *
++ * Return: 0 on success, negative errno on failure.
++ *
++ * Files references in MEMFD or FDS items are pinned.
++ *
++ * On errors, the caller should drop any taken reference with
++ * kdbus_kmsg_free()
++ */
++static int kdbus_msg_scan_items(struct kdbus_kmsg *kmsg,
++ struct kdbus_bus *bus)
++{
++ struct kdbus_msg_resources *res = kmsg->res;
++ const struct kdbus_msg *msg = &kmsg->msg;
++ const struct kdbus_item *item;
++ size_t n, n_vecs, n_memfds;
++ bool has_bloom = false;
++ bool has_name = false;
++ bool has_fds = false;
++ bool is_broadcast;
++ bool is_signal;
++ u64 vec_size;
++
++ is_broadcast = (msg->dst_id == KDBUS_DST_ID_BROADCAST);
++ is_signal = !!(msg->flags & KDBUS_MSG_SIGNAL);
++
++ /* count data payloads */
++ n_vecs = 0;
++ n_memfds = 0;
++ KDBUS_ITEMS_FOREACH(item, msg->items, KDBUS_ITEMS_SIZE(msg, items)) {
++ switch (item->type) {
++ case KDBUS_ITEM_PAYLOAD_VEC:
++ ++n_vecs;
++ break;
++ case KDBUS_ITEM_PAYLOAD_MEMFD:
++ ++n_memfds;
++ if (item->memfd.size % 8)
++ ++n_vecs;
++ break;
++ default:
++ break;
++ }
++ }
++
++ n = n_vecs + n_memfds;
++ if (n > 0) {
++ res->data = kcalloc(n, sizeof(*res->data), GFP_KERNEL);
++ if (!res->data)
++ return -ENOMEM;
++ }
++
++ if (n_vecs > 0) {
++ kmsg->iov = kcalloc(n_vecs, sizeof(*kmsg->iov), GFP_KERNEL);
++ if (!kmsg->iov)
++ return -ENOMEM;
++ }
++
++ /* import data payloads */
++ n = 0;
++ vec_size = 0;
++ KDBUS_ITEMS_FOREACH(item, msg->items, KDBUS_ITEMS_SIZE(msg, items)) {
++ size_t payload_size = KDBUS_ITEM_PAYLOAD_SIZE(item);
++ struct iovec *iov = kmsg->iov + kmsg->iov_count;
++
++ if (++n > KDBUS_MSG_MAX_ITEMS)
++ return -E2BIG;
++
++ switch (item->type) {
++ case KDBUS_ITEM_PAYLOAD_VEC: {
++ struct kdbus_msg_data *d = res->data + res->data_count;
++ void __force __user *ptr = KDBUS_PTR(item->vec.address);
++ size_t size = item->vec.size;
++
++ if (vec_size + size < vec_size)
++ return -EMSGSIZE;
++ if (vec_size + size > KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE)
++ return -EMSGSIZE;
++
++ d->type = KDBUS_MSG_DATA_VEC;
++ d->size = size;
++
++ if (ptr) {
++ if (unlikely(!access_ok(VERIFY_READ, ptr,
++ size)))
++ return -EFAULT;
++
++ d->vec.off = kmsg->pool_size;
++ iov->iov_base = ptr;
++ iov->iov_len = size;
++ } else {
++ d->vec.off = ~0ULL;
++ iov->iov_base = (char __user *)zeros;
++ iov->iov_len = size % 8;
++ }
++
++ if (kmsg->pool_size + iov->iov_len < kmsg->pool_size)
++ return -EMSGSIZE;
++
++ kmsg->pool_size += iov->iov_len;
++ ++kmsg->iov_count;
++ ++res->vec_count;
++ ++res->data_count;
++ vec_size += size;
++
++ break;
++ }
++
++ case KDBUS_ITEM_PAYLOAD_MEMFD: {
++ struct kdbus_msg_data *d = res->data + res->data_count;
++ u64 start = item->memfd.start;
++ u64 size = item->memfd.size;
++ size_t pad = size % 8;
++ int seals, mask;
++ struct file *f;
++
++ if (kmsg->pool_size + size % 8 < kmsg->pool_size)
++ return -EMSGSIZE;
++ if (start + size < start)
++ return -EMSGSIZE;
++
++ if (item->memfd.fd < 0)
++ return -EBADF;
++
++ if (res->memfd_count >= KDBUS_MSG_MAX_MEMFD_ITEMS)
++ return -E2BIG;
++
++ f = fget(item->memfd.fd);
++ if (!f)
++ return -EBADF;
++
++ if (pad) {
++ iov->iov_base = (char __user *)zeros;
++ iov->iov_len = pad;
++
++ kmsg->pool_size += pad;
++ ++kmsg->iov_count;
++ }
++
++ ++res->data_count;
++ ++res->memfd_count;
++
++ d->type = KDBUS_MSG_DATA_MEMFD;
++ d->size = size;
++ d->memfd.start = start;
++ d->memfd.file = f;
++
++ /*
++ * We only accept a sealed memfd file whose content
++ * cannot be altered by the sender or anybody else
++ * while it is shared or in-flight. Other files need
++ * to be passed with KDBUS_MSG_FDS.
++ */
++ seals = shmem_get_seals(f);
++ if (seals < 0)
++ return -EMEDIUMTYPE;
++
++ mask = F_SEAL_SHRINK | F_SEAL_GROW |
++ F_SEAL_WRITE | F_SEAL_SEAL;
++ if ((seals & mask) != mask)
++ return -ETXTBSY;
++
++ if (start + size > (u64)i_size_read(file_inode(f)))
++ return -EBADF;
++
++ break;
++ }
++
++ case KDBUS_ITEM_FDS: {
++ unsigned int i;
++ unsigned int fds_count = payload_size / sizeof(int);
++
++ /* do not allow multiple fd arrays */
++ if (has_fds)
++ return -EEXIST;
++ has_fds = true;
++
++ /* Do not allow to broadcast file descriptors */
++ if (is_broadcast)
++ return -ENOTUNIQ;
++
++ if (fds_count > KDBUS_CONN_MAX_FDS_PER_USER)
++ return -EMFILE;
++
++ res->fds = kcalloc(fds_count, sizeof(struct file *),
++ GFP_KERNEL);
++ if (!res->fds)
++ return -ENOMEM;
++
++ for (i = 0; i < fds_count; i++) {
++ int fd = item->fds[i];
++ int ret;
++
++ /*
++ * Verify the fd and increment the usage count.
++ * Use fget_raw() to allow passing O_PATH fds.
++ */
++ if (fd < 0)
++ return -EBADF;
++
++ res->fds[i] = fget_raw(fd);
++ if (!res->fds[i])
++ return -EBADF;
++
++ res->fds_count++;
++
++ ret = kdbus_handle_check_file(res->fds[i]);
++ if (ret < 0)
++ return ret;
++ }
++
++ break;
++ }
++
++ case KDBUS_ITEM_BLOOM_FILTER: {
++ u64 bloom_size;
++
++ /* do not allow multiple bloom filters */
++ if (has_bloom)
++ return -EEXIST;
++ has_bloom = true;
++
++ bloom_size = payload_size -
++ offsetof(struct kdbus_bloom_filter, data);
++
++ /*
++ * Allow only bloom filter sizes of a multiple of 64bit.
++ */
++ if (!KDBUS_IS_ALIGNED8(bloom_size))
++ return -EFAULT;
++
++ /* do not allow mismatching bloom filter sizes */
++ if (bloom_size != bus->bloom.size)
++ return -EDOM;
++
++ kmsg->bloom_filter = &item->bloom_filter;
++ break;
++ }
++
++ case KDBUS_ITEM_DST_NAME:
++ /* do not allow multiple names */
++ if (has_name)
++ return -EEXIST;
++ has_name = true;
++
++ if (!kdbus_name_is_valid(item->str, false))
++ return -EINVAL;
++
++ res->dst_name = kstrdup(item->str, GFP_KERNEL);
++ if (!res->dst_name)
++ return -ENOMEM;
++ break;
++
++ default:
++ return -EINVAL;
++ }
++ }
++
++ /* name is needed if no ID is given */
++ if (msg->dst_id == KDBUS_DST_ID_NAME && !has_name)
++ return -EDESTADDRREQ;
++
++ if (is_broadcast) {
++ /* Broadcasts can't take names */
++ if (has_name)
++ return -EBADMSG;
++
++ /* All broadcasts have to be signals */
++ if (!is_signal)
++ return -EBADMSG;
++
++ /* Timeouts are not allowed for broadcasts */
++ if (msg->timeout_ns > 0)
++ return -ENOTUNIQ;
++ }
++
++ /*
++ * Signal messages require a bloom filter, and bloom filters are
++ * only valid with signals.
++ */
++ if (is_signal ^ has_bloom)
++ return -EBADMSG;
++
++ return 0;
++}
++
++/**
++ * kdbus_kmsg_new_from_cmd() - create kernel message from send payload
++ * @conn: Connection
++ * @cmd_send: Payload of KDBUS_CMD_SEND
++ *
++ * Return: a new kdbus_kmsg on success, ERR_PTR on failure.
++ */
++struct kdbus_kmsg *kdbus_kmsg_new_from_cmd(struct kdbus_conn *conn,
++ struct kdbus_cmd_send *cmd_send)
++{
++ struct kdbus_kmsg *m;
++ u64 size;
++ int ret;
++
++ ret = kdbus_copy_from_user(&size, KDBUS_PTR(cmd_send->msg_address),
++ sizeof(size));
++ if (ret < 0)
++ return ERR_PTR(ret);
++
++ if (size < sizeof(struct kdbus_msg) || size > KDBUS_MSG_MAX_SIZE)
++ return ERR_PTR(-EINVAL);
++
++ m = kmalloc(size + KDBUS_KMSG_HEADER_SIZE, GFP_KERNEL);
++ if (!m)
++ return ERR_PTR(-ENOMEM);
++
++ memset(m, 0, KDBUS_KMSG_HEADER_SIZE);
++ m->seq = atomic64_inc_return(&conn->ep->bus->domain->last_id);
++
++ m->proc_meta = kdbus_meta_proc_new();
++ if (IS_ERR(m->proc_meta)) {
++ ret = PTR_ERR(m->proc_meta);
++ m->proc_meta = NULL;
++ goto exit_free;
++ }
++
++ m->conn_meta = kdbus_meta_conn_new();
++ if (IS_ERR(m->conn_meta)) {
++ ret = PTR_ERR(m->conn_meta);
++ m->conn_meta = NULL;
++ goto exit_free;
++ }
++
++ if (copy_from_user(&m->msg, KDBUS_PTR(cmd_send->msg_address), size)) {
++ ret = -EFAULT;
++ goto exit_free;
++ }
++
++ if (m->msg.size != size) {
++ ret = -EINVAL;
++ goto exit_free;
++ }
++
++ if (m->msg.flags & ~(KDBUS_MSG_EXPECT_REPLY |
++ KDBUS_MSG_NO_AUTO_START |
++ KDBUS_MSG_SIGNAL)) {
++ ret = -EINVAL;
++ goto exit_free;
++ }
++
++ ret = kdbus_items_validate(m->msg.items,
++ KDBUS_ITEMS_SIZE(&m->msg, items));
++ if (ret < 0)
++ goto exit_free;
++
++ m->res = kdbus_msg_resources_new();
++ if (IS_ERR(m->res)) {
++ ret = PTR_ERR(m->res);
++ m->res = NULL;
++ goto exit_free;
++ }
++
++ /* do not accept kernel-generated messages */
++ if (m->msg.payload_type == KDBUS_PAYLOAD_KERNEL) {
++ ret = -EINVAL;
++ goto exit_free;
++ }
++
++ if (m->msg.flags & KDBUS_MSG_EXPECT_REPLY) {
++ /* requests for replies need timeout and cookie */
++ if (m->msg.timeout_ns == 0 || m->msg.cookie == 0) {
++ ret = -EINVAL;
++ goto exit_free;
++ }
++
++ /* replies may not be expected for broadcasts */
++ if (m->msg.dst_id == KDBUS_DST_ID_BROADCAST) {
++ ret = -ENOTUNIQ;
++ goto exit_free;
++ }
++
++ /* replies may not be expected for signals */
++ if (m->msg.flags & KDBUS_MSG_SIGNAL) {
++ ret = -EINVAL;
++ goto exit_free;
++ }
++ } else {
++ /*
++ * KDBUS_SEND_SYNC_REPLY is only valid together with
++ * KDBUS_MSG_EXPECT_REPLY
++ */
++ if (cmd_send->flags & KDBUS_SEND_SYNC_REPLY) {
++ ret = -EINVAL;
++ goto exit_free;
++ }
++
++ /* replies cannot be signals */
++ if (m->msg.cookie_reply && (m->msg.flags & KDBUS_MSG_SIGNAL)) {
++ ret = -EINVAL;
++ goto exit_free;
++ }
++ }
++
++ ret = kdbus_msg_scan_items(m, conn->ep->bus);
++ if (ret < 0)
++ goto exit_free;
++
++ /* patch-in the source of this message */
++ if (m->msg.src_id > 0 && m->msg.src_id != conn->id) {
++ ret = -EINVAL;
++ goto exit_free;
++ }
++ m->msg.src_id = conn->id;
++
++ return m;
++
++exit_free:
++ kdbus_kmsg_free(m);
++ return ERR_PTR(ret);
++}
+diff --git a/ipc/kdbus/message.h b/ipc/kdbus/message.h
+new file mode 100644
+index 0000000..af47758
+--- /dev/null
++++ b/ipc/kdbus/message.h
+@@ -0,0 +1,133 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_MESSAGE_H
++#define __KDBUS_MESSAGE_H
++
++#include "util.h"
++#include "metadata.h"
++
++/**
++ * enum kdbus_msg_data_type - Type of kdbus_msg_data payloads
++ * @KDBUS_MSG_DATA_VEC: Data vector provided by user-space
++ * @KDBUS_MSG_DATA_MEMFD: Memfd payload
++ */
++enum kdbus_msg_data_type {
++ KDBUS_MSG_DATA_VEC,
++ KDBUS_MSG_DATA_MEMFD,
++};
++
++/**
++ * struct kdbus_msg_data - Data payload as stored by messages
++ * @type: Type of payload (KDBUS_MSG_DATA_*)
++ * @size: Size of the described payload
++ * @off: The offset, relative to the vec slice
++ * @start: Offset inside the memfd
++ * @file: Backing file referenced by the memfd
++ */
++struct kdbus_msg_data {
++ unsigned int type;
++ u64 size;
++
++ union {
++ struct {
++ u64 off;
++ } vec;
++ struct {
++ u64 start;
++ struct file *file;
++ } memfd;
++ };
++};
++
++/**
++ * struct kdbus_kmsg_resources - resources of a message
++ * @kref: Reference counter
++ * @dst_name: Short-cut to msg for faster lookup
++ * @fds: Array of file descriptors to pass
++ * @fds_count: Number of file descriptors to pass
++ * @data: Array of data payloads
++ * @vec_count: Number of VEC entries
++ * @memfd_count: Number of MEMFD entries in @data
++ * @data_count: Sum of @vec_count + @memfd_count
++ */
++struct kdbus_msg_resources {
++ struct kref kref;
++ const char *dst_name;
++
++ struct file **fds;
++ unsigned int fds_count;
++
++ struct kdbus_msg_data *data;
++ size_t vec_count;
++ size_t memfd_count;
++ size_t data_count;
++};
++
++struct kdbus_msg_resources *
++kdbus_msg_resources_ref(struct kdbus_msg_resources *r);
++struct kdbus_msg_resources *
++kdbus_msg_resources_unref(struct kdbus_msg_resources *r);
++
++/**
++ * struct kdbus_kmsg - internal message handling data
++ * @seq: Domain-global message sequence number
++ * @notify_type: Short-cut for faster lookup
++ * @notify_old_id: Short-cut for faster lookup
++ * @notify_new_id: Short-cut for faster lookup
++ * @notify_name: Short-cut for faster lookup
++ * @dst_name_id: Short-cut to msg for faster lookup
++ * @bloom_filter: Bloom filter to match message properties
++ * @bloom_generation: Generation of bloom element set
++ * @notify_entry: List of kernel-generated notifications
++ * @iov: Array of iovec, describing the payload to copy
++ * @iov_count: Number of array members in @iov
++ * @pool_size: Overall size of inlined data referenced by @iov
++ * @proc_meta: Appended SCM-like metadata of the sending process
++ * @conn_meta: Appended SCM-like metadata of the sending connection
++ * @res: Message resources
++ * @msg: Message from or to userspace
++ */
++struct kdbus_kmsg {
++ u64 seq;
++ u64 notify_type;
++ u64 notify_old_id;
++ u64 notify_new_id;
++ const char *notify_name;
++
++ u64 dst_name_id;
++ const struct kdbus_bloom_filter *bloom_filter;
++ u64 bloom_generation;
++ struct list_head notify_entry;
++
++ struct iovec *iov;
++ size_t iov_count;
++ u64 pool_size;
++
++ struct kdbus_meta_proc *proc_meta;
++ struct kdbus_meta_conn *conn_meta;
++ struct kdbus_msg_resources *res;
++
++ /* variable size, must be the last member */
++ struct kdbus_msg msg;
++};
++
++struct kdbus_bus;
++struct kdbus_conn;
++
++struct kdbus_kmsg *kdbus_kmsg_new(struct kdbus_bus *bus, size_t extra_size);
++struct kdbus_kmsg *kdbus_kmsg_new_from_cmd(struct kdbus_conn *conn,
++ struct kdbus_cmd_send *cmd_send);
++void kdbus_kmsg_free(struct kdbus_kmsg *kmsg);
++
++#endif
+diff --git a/ipc/kdbus/metadata.c b/ipc/kdbus/metadata.c
+new file mode 100644
+index 0000000..3adc6c2
+--- /dev/null
++++ b/ipc/kdbus/metadata.c
+@@ -0,0 +1,1159 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/audit.h>
++#include <linux/capability.h>
++#include <linux/cgroup.h>
++#include <linux/cred.h>
++#include <linux/file.h>
++#include <linux/fs_struct.h>
++#include <linux/init.h>
++#include <linux/kref.h>
++#include <linux/mutex.h>
++#include <linux/sched.h>
++#include <linux/security.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/uidgid.h>
++#include <linux/uio.h>
++#include <linux/user_namespace.h>
++#include <linux/version.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "endpoint.h"
++#include "item.h"
++#include "message.h"
++#include "metadata.h"
++#include "names.h"
++
++/**
++ * struct kdbus_meta_proc - Process metadata
++ * @kref: Reference counting
++ * @lock: Object lock
++ * @collected: Bitmask of collected items
++ * @valid: Bitmask of collected and valid items
++ * @uid: UID of process
++ * @euid: EUID of process
++ * @suid: SUID of process
++ * @fsuid: FSUID of process
++ * @gid: GID of process
++ * @egid: EGID of process
++ * @sgid: SGID of process
++ * @fsgid: FSGID of process
++ * @pid: PID of process
++ * @tgid: TGID of process
++ * @ppid: PPID of process
++ * @auxgrps: Auxiliary groups
++ * @n_auxgrps: Number of items in @auxgrps
++ * @tid_comm: TID comm line
++ * @pid_comm: PID comm line
++ * @exe_path: Executable path
++ * @root_path: Root-FS path
++ * @cmdline: Command-line
++ * @cgroup: Full cgroup path
++ * @caps: Capabilities
++ * @caps_namespace: User-namespace of @caps
++ * @seclabel: Seclabel
++ * @audit_loginuid: Audit login-UID
++ * @audit_sessionid: Audit session-ID
++ */
++struct kdbus_meta_proc {
++ struct kref kref;
++ struct mutex lock;
++ u64 collected;
++ u64 valid;
++
++ /* KDBUS_ITEM_CREDS */
++ kuid_t uid, euid, suid, fsuid;
++ kgid_t gid, egid, sgid, fsgid;
++
++ /* KDBUS_ITEM_PIDS */
++ struct pid *pid;
++ struct pid *tgid;
++ struct pid *ppid;
++
++ /* KDBUS_ITEM_AUXGROUPS */
++ kgid_t *auxgrps;
++ size_t n_auxgrps;
++
++ /* KDBUS_ITEM_TID_COMM */
++ char tid_comm[TASK_COMM_LEN];
++ /* KDBUS_ITEM_PID_COMM */
++ char pid_comm[TASK_COMM_LEN];
++
++ /* KDBUS_ITEM_EXE */
++ struct path exe_path;
++ struct path root_path;
++
++ /* KDBUS_ITEM_CMDLINE */
++ char *cmdline;
++
++ /* KDBUS_ITEM_CGROUP */
++ char *cgroup;
++
++ /* KDBUS_ITEM_CAPS */
++ struct caps {
++ /* binary compatible to kdbus_caps */
++ u32 last_cap;
++ struct {
++ u32 caps[_KERNEL_CAPABILITY_U32S];
++ } set[4];
++ } caps;
++ struct user_namespace *caps_namespace;
++
++ /* KDBUS_ITEM_SECLABEL */
++ char *seclabel;
++
++ /* KDBUS_ITEM_AUDIT */
++ kuid_t audit_loginuid;
++ unsigned int audit_sessionid;
++};
++
++/**
++ * struct kdbus_meta_conn
++ * @kref: Reference counting
++ * @lock: Object lock
++ * @collected: Bitmask of collected items
++ * @valid: Bitmask of collected and valid items
++ * @ts: Timestamp values
++ * @owned_names_items: Serialized items for owned names
++ * @owned_names_size: Size of @owned_names_items
++ * @conn_description: Connection description
++ */
++struct kdbus_meta_conn {
++ struct kref kref;
++ struct mutex lock;
++ u64 collected;
++ u64 valid;
++
++ /* KDBUS_ITEM_TIMESTAMP */
++ struct kdbus_timestamp ts;
++
++ /* KDBUS_ITEM_OWNED_NAME */
++ struct kdbus_item *owned_names_items;
++ size_t owned_names_size;
++
++ /* KDBUS_ITEM_CONN_DESCRIPTION */
++ char *conn_description;
++};
++
++/**
++ * kdbus_meta_proc_new() - Create process metadata object
++ *
++ * Return: Pointer to new object on success, ERR_PTR on failure.
++ */
++struct kdbus_meta_proc *kdbus_meta_proc_new(void)
++{
++ struct kdbus_meta_proc *mp;
++
++ mp = kzalloc(sizeof(*mp), GFP_KERNEL);
++ if (!mp)
++ return ERR_PTR(-ENOMEM);
++
++ kref_init(&mp->kref);
++ mutex_init(&mp->lock);
++
++ return mp;
++}
++
++static void kdbus_meta_proc_free(struct kref *kref)
++{
++ struct kdbus_meta_proc *mp = container_of(kref, struct kdbus_meta_proc,
++ kref);
++
++ path_put(&mp->exe_path);
++ path_put(&mp->root_path);
++ put_user_ns(mp->caps_namespace);
++ put_pid(mp->ppid);
++ put_pid(mp->tgid);
++ put_pid(mp->pid);
++
++ kfree(mp->seclabel);
++ kfree(mp->auxgrps);
++ kfree(mp->cmdline);
++ kfree(mp->cgroup);
++ kfree(mp);
++}
++
++/**
++ * kdbus_meta_proc_ref() - Gain reference
++ * @mp: Process metadata object
++ *
++ * Return: @mp is returned
++ */
++struct kdbus_meta_proc *kdbus_meta_proc_ref(struct kdbus_meta_proc *mp)
++{
++ if (mp)
++ kref_get(&mp->kref);
++ return mp;
++}
++
++/**
++ * kdbus_meta_proc_unref() - Drop reference
++ * @mp: Process metadata object
++ *
++ * Return: NULL
++ */
++struct kdbus_meta_proc *kdbus_meta_proc_unref(struct kdbus_meta_proc *mp)
++{
++ if (mp)
++ kref_put(&mp->kref, kdbus_meta_proc_free);
++ return NULL;
++}
++
++static void kdbus_meta_proc_collect_creds(struct kdbus_meta_proc *mp)
++{
++ mp->uid = current_uid();
++ mp->euid = current_euid();
++ mp->suid = current_suid();
++ mp->fsuid = current_fsuid();
++
++ mp->gid = current_gid();
++ mp->egid = current_egid();
++ mp->sgid = current_sgid();
++ mp->fsgid = current_fsgid();
++
++ mp->valid |= KDBUS_ATTACH_CREDS;
++}
++
++static void kdbus_meta_proc_collect_pids(struct kdbus_meta_proc *mp)
++{
++ struct task_struct *parent;
++
++ mp->pid = get_pid(task_pid(current));
++ mp->tgid = get_pid(task_tgid(current));
++
++ rcu_read_lock();
++ parent = rcu_dereference(current->real_parent);
++ mp->ppid = get_pid(task_tgid(parent));
++ rcu_read_unlock();
++
++ mp->valid |= KDBUS_ATTACH_PIDS;
++}
++
++static int kdbus_meta_proc_collect_auxgroups(struct kdbus_meta_proc *mp)
++{
++ struct group_info *info;
++ size_t i;
++
++ info = get_current_groups();
++
++ if (info->ngroups > 0) {
++ mp->auxgrps = kmalloc_array(info->ngroups, sizeof(kgid_t),
++ GFP_KERNEL);
++ if (!mp->auxgrps) {
++ put_group_info(info);
++ return -ENOMEM;
++ }
++
++ for (i = 0; i < info->ngroups; i++)
++ mp->auxgrps[i] = GROUP_AT(info, i);
++ }
++
++ mp->n_auxgrps = info->ngroups;
++ put_group_info(info);
++ mp->valid |= KDBUS_ATTACH_AUXGROUPS;
++
++ return 0;
++}
++
++static void kdbus_meta_proc_collect_tid_comm(struct kdbus_meta_proc *mp)
++{
++ get_task_comm(mp->tid_comm, current);
++ mp->valid |= KDBUS_ATTACH_TID_COMM;
++}
++
++static void kdbus_meta_proc_collect_pid_comm(struct kdbus_meta_proc *mp)
++{
++ get_task_comm(mp->pid_comm, current->group_leader);
++ mp->valid |= KDBUS_ATTACH_PID_COMM;
++}
++
++static void kdbus_meta_proc_collect_exe(struct kdbus_meta_proc *mp)
++{
++ struct mm_struct *mm;
++
++ mm = get_task_mm(current);
++ if (!mm)
++ return;
++
++ down_read(&mm->mmap_sem);
++ if (mm->exe_file) {
++ mp->exe_path = mm->exe_file->f_path;
++ path_get(&mp->exe_path);
++ get_fs_root(current->fs, &mp->root_path);
++ mp->valid |= KDBUS_ATTACH_EXE;
++ }
++ up_read(&mm->mmap_sem);
++
++ mmput(mm);
++}
++
++static int kdbus_meta_proc_collect_cmdline(struct kdbus_meta_proc *mp)
++{
++ struct mm_struct *mm;
++ char *cmdline;
++
++ mm = get_task_mm(current);
++ if (!mm)
++ return 0;
++
++ if (!mm->arg_end) {
++ mmput(mm);
++ return 0;
++ }
++
++ cmdline = strndup_user((const char __user *)mm->arg_start,
++ mm->arg_end - mm->arg_start);
++ mmput(mm);
++
++ if (IS_ERR(cmdline))
++ return PTR_ERR(cmdline);
++
++ mp->cmdline = cmdline;
++ mp->valid |= KDBUS_ATTACH_CMDLINE;
++
++ return 0;
++}
++
++static int kdbus_meta_proc_collect_cgroup(struct kdbus_meta_proc *mp)
++{
++#ifdef CONFIG_CGROUPS
++ void *page;
++ char *s;
++
++ page = (void *)__get_free_page(GFP_TEMPORARY);
++ if (!page)
++ return -ENOMEM;
++
++ s = task_cgroup_path(current, page, PAGE_SIZE);
++ if (s) {
++ mp->cgroup = kstrdup(s, GFP_KERNEL);
++ if (!mp->cgroup) {
++ free_page((unsigned long)page);
++ return -ENOMEM;
++ }
++ }
++
++ free_page((unsigned long)page);
++ mp->valid |= KDBUS_ATTACH_CGROUP;
++#endif
++
++ return 0;
++}
++
++static void kdbus_meta_proc_collect_caps(struct kdbus_meta_proc *mp)
++{
++ const struct cred *c = current_cred();
++ int i;
++
++ /* ABI: "last_cap" equals /proc/sys/kernel/cap_last_cap */
++ mp->caps.last_cap = CAP_LAST_CAP;
++ mp->caps_namespace = get_user_ns(current_user_ns());
++
++ CAP_FOR_EACH_U32(i) {
++ mp->caps.set[0].caps[i] = c->cap_inheritable.cap[i];
++ mp->caps.set[1].caps[i] = c->cap_permitted.cap[i];
++ mp->caps.set[2].caps[i] = c->cap_effective.cap[i];
++ mp->caps.set[3].caps[i] = c->cap_bset.cap[i];
++ }
++
++ /* clear unused bits */
++ for (i = 0; i < 4; i++)
++ mp->caps.set[i].caps[CAP_TO_INDEX(CAP_LAST_CAP)] &=
++ CAP_LAST_U32_VALID_MASK;
++
++ mp->valid |= KDBUS_ATTACH_CAPS;
++}
++
++static int kdbus_meta_proc_collect_seclabel(struct kdbus_meta_proc *mp)
++{
++#ifdef CONFIG_SECURITY
++ char *ctx = NULL;
++ u32 sid, len;
++ int ret;
++
++ security_task_getsecid(current, &sid);
++ ret = security_secid_to_secctx(sid, &ctx, &len);
++ if (ret < 0) {
++ /*
++ * EOPNOTSUPP means no security module is active,
++ * lets skip adding the seclabel then. This effectively
++ * drops the SECLABEL item.
++ */
++ return (ret == -EOPNOTSUPP) ? 0 : ret;
++ }
++
++ mp->seclabel = kstrdup(ctx, GFP_KERNEL);
++ security_release_secctx(ctx, len);
++ if (!mp->seclabel)
++ return -ENOMEM;
++
++ mp->valid |= KDBUS_ATTACH_SECLABEL;
++#endif
++
++ return 0;
++}
++
++static void kdbus_meta_proc_collect_audit(struct kdbus_meta_proc *mp)
++{
++#ifdef CONFIG_AUDITSYSCALL
++ mp->audit_loginuid = audit_get_loginuid(current);
++ mp->audit_sessionid = audit_get_sessionid(current);
++ mp->valid |= KDBUS_ATTACH_AUDIT;
++#endif
++}
++
++/**
++ * kdbus_meta_proc_collect() - Collect process metadata
++ * @mp: Process metadata object
++ * @what: Attach flags to collect
++ *
++ * This collects process metadata from current and saves it in @mp.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_meta_proc_collect(struct kdbus_meta_proc *mp, u64 what)
++{
++ int ret;
++
++ if (!mp || !(what & (KDBUS_ATTACH_CREDS |
++ KDBUS_ATTACH_PIDS |
++ KDBUS_ATTACH_AUXGROUPS |
++ KDBUS_ATTACH_TID_COMM |
++ KDBUS_ATTACH_PID_COMM |
++ KDBUS_ATTACH_EXE |
++ KDBUS_ATTACH_CMDLINE |
++ KDBUS_ATTACH_CGROUP |
++ KDBUS_ATTACH_CAPS |
++ KDBUS_ATTACH_SECLABEL |
++ KDBUS_ATTACH_AUDIT)))
++ return 0;
++
++ mutex_lock(&mp->lock);
++
++ if ((what & KDBUS_ATTACH_CREDS) &&
++ !(mp->collected & KDBUS_ATTACH_CREDS)) {
++ kdbus_meta_proc_collect_creds(mp);
++ mp->collected |= KDBUS_ATTACH_CREDS;
++ }
++
++ if ((what & KDBUS_ATTACH_PIDS) &&
++ !(mp->collected & KDBUS_ATTACH_PIDS)) {
++ kdbus_meta_proc_collect_pids(mp);
++ mp->collected |= KDBUS_ATTACH_PIDS;
++ }
++
++ if ((what & KDBUS_ATTACH_AUXGROUPS) &&
++ !(mp->collected & KDBUS_ATTACH_AUXGROUPS)) {
++ ret = kdbus_meta_proc_collect_auxgroups(mp);
++ if (ret < 0)
++ goto exit_unlock;
++ mp->collected |= KDBUS_ATTACH_AUXGROUPS;
++ }
++
++ if ((what & KDBUS_ATTACH_TID_COMM) &&
++ !(mp->collected & KDBUS_ATTACH_TID_COMM)) {
++ kdbus_meta_proc_collect_tid_comm(mp);
++ mp->collected |= KDBUS_ATTACH_TID_COMM;
++ }
++
++ if ((what & KDBUS_ATTACH_PID_COMM) &&
++ !(mp->collected & KDBUS_ATTACH_PID_COMM)) {
++ kdbus_meta_proc_collect_pid_comm(mp);
++ mp->collected |= KDBUS_ATTACH_PID_COMM;
++ }
++
++ if ((what & KDBUS_ATTACH_EXE) &&
++ !(mp->collected & KDBUS_ATTACH_EXE)) {
++ kdbus_meta_proc_collect_exe(mp);
++ mp->collected |= KDBUS_ATTACH_EXE;
++ }
++
++ if ((what & KDBUS_ATTACH_CMDLINE) &&
++ !(mp->collected & KDBUS_ATTACH_CMDLINE)) {
++ ret = kdbus_meta_proc_collect_cmdline(mp);
++ if (ret < 0)
++ goto exit_unlock;
++ mp->collected |= KDBUS_ATTACH_CMDLINE;
++ }
++
++ if ((what & KDBUS_ATTACH_CGROUP) &&
++ !(mp->collected & KDBUS_ATTACH_CGROUP)) {
++ ret = kdbus_meta_proc_collect_cgroup(mp);
++ if (ret < 0)
++ goto exit_unlock;
++ mp->collected |= KDBUS_ATTACH_CGROUP;
++ }
++
++ if ((what & KDBUS_ATTACH_CAPS) &&
++ !(mp->collected & KDBUS_ATTACH_CAPS)) {
++ kdbus_meta_proc_collect_caps(mp);
++ mp->collected |= KDBUS_ATTACH_CAPS;
++ }
++
++ if ((what & KDBUS_ATTACH_SECLABEL) &&
++ !(mp->collected & KDBUS_ATTACH_SECLABEL)) {
++ ret = kdbus_meta_proc_collect_seclabel(mp);
++ if (ret < 0)
++ goto exit_unlock;
++ mp->collected |= KDBUS_ATTACH_SECLABEL;
++ }
++
++ if ((what & KDBUS_ATTACH_AUDIT) &&
++ !(mp->collected & KDBUS_ATTACH_AUDIT)) {
++ kdbus_meta_proc_collect_audit(mp);
++ mp->collected |= KDBUS_ATTACH_AUDIT;
++ }
++
++ ret = 0;
++
++exit_unlock:
++ mutex_unlock(&mp->lock);
++ return ret;
++}
++
++/**
++ * kdbus_meta_proc_fake() - Fill process metadata from faked credentials
++ * @mp: Metadata
++ * @creds: Creds to set, may be %NULL
++ * @pids: PIDs to set, may be %NULL
++ * @seclabel: Seclabel to set, may be %NULL
++ *
++ * This function takes information stored in @creds, @pids and @seclabel and
++ * resolves them to kernel-representations, if possible. A call to this function
++ * is considered an alternative to calling kdbus_meta_add_current(), which
++ * derives the same information from the 'current' task.
++ *
++ * This call uses the current task's namespaces to resolve the given
++ * information.
++ *
++ * Return: 0 on success, negative error number otherwise.
++ */
++int kdbus_meta_proc_fake(struct kdbus_meta_proc *mp,
++ const struct kdbus_creds *creds,
++ const struct kdbus_pids *pids,
++ const char *seclabel)
++{
++ int ret;
++
++ if (!mp)
++ return 0;
++
++ mutex_lock(&mp->lock);
++
++ if (creds && !(mp->collected & KDBUS_ATTACH_CREDS)) {
++ struct user_namespace *ns = current_user_ns();
++
++ mp->uid = make_kuid(ns, creds->uid);
++ mp->euid = make_kuid(ns, creds->euid);
++ mp->suid = make_kuid(ns, creds->suid);
++ mp->fsuid = make_kuid(ns, creds->fsuid);
++
++ mp->gid = make_kgid(ns, creds->gid);
++ mp->egid = make_kgid(ns, creds->egid);
++ mp->sgid = make_kgid(ns, creds->sgid);
++ mp->fsgid = make_kgid(ns, creds->fsgid);
++
++ if ((creds->uid != (uid_t)-1 && !uid_valid(mp->uid)) ||
++ (creds->euid != (uid_t)-1 && !uid_valid(mp->euid)) ||
++ (creds->suid != (uid_t)-1 && !uid_valid(mp->suid)) ||
++ (creds->fsuid != (uid_t)-1 && !uid_valid(mp->fsuid)) ||
++ (creds->gid != (gid_t)-1 && !gid_valid(mp->gid)) ||
++ (creds->egid != (gid_t)-1 && !gid_valid(mp->egid)) ||
++ (creds->sgid != (gid_t)-1 && !gid_valid(mp->sgid)) ||
++ (creds->fsgid != (gid_t)-1 && !gid_valid(mp->fsgid))) {
++ ret = -EINVAL;
++ goto exit_unlock;
++ }
++
++ mp->valid |= KDBUS_ATTACH_CREDS;
++ mp->collected |= KDBUS_ATTACH_CREDS;
++ }
++
++ if (pids && !(mp->collected & KDBUS_ATTACH_PIDS)) {
++ mp->pid = get_pid(find_vpid(pids->tid));
++ mp->tgid = get_pid(find_vpid(pids->pid));
++ mp->ppid = get_pid(find_vpid(pids->ppid));
++
++ if ((pids->tid != 0 && !mp->pid) ||
++ (pids->pid != 0 && !mp->tgid) ||
++ (pids->ppid != 0 && !mp->ppid)) {
++ put_pid(mp->pid);
++ put_pid(mp->tgid);
++ put_pid(mp->ppid);
++ mp->pid = NULL;
++ mp->tgid = NULL;
++ mp->ppid = NULL;
++ ret = -EINVAL;
++ goto exit_unlock;
++ }
++
++ mp->valid |= KDBUS_ATTACH_PIDS;
++ mp->collected |= KDBUS_ATTACH_PIDS;
++ }
++
++ if (seclabel && !(mp->collected & KDBUS_ATTACH_SECLABEL)) {
++ mp->seclabel = kstrdup(seclabel, GFP_KERNEL);
++ if (!mp->seclabel) {
++ ret = -ENOMEM;
++ goto exit_unlock;
++ }
++
++ mp->valid |= KDBUS_ATTACH_SECLABEL;
++ mp->collected |= KDBUS_ATTACH_SECLABEL;
++ }
++
++ ret = 0;
++
++exit_unlock:
++ mutex_unlock(&mp->lock);
++ return ret;
++}
++
++/**
++ * kdbus_meta_conn_new() - Create connection metadata object
++ *
++ * Return: Pointer to new object on success, ERR_PTR on failure.
++ */
++struct kdbus_meta_conn *kdbus_meta_conn_new(void)
++{
++ struct kdbus_meta_conn *mc;
++
++ mc = kzalloc(sizeof(*mc), GFP_KERNEL);
++ if (!mc)
++ return ERR_PTR(-ENOMEM);
++
++ kref_init(&mc->kref);
++ mutex_init(&mc->lock);
++
++ return mc;
++}
++
++static void kdbus_meta_conn_free(struct kref *kref)
++{
++ struct kdbus_meta_conn *mc =
++ container_of(kref, struct kdbus_meta_conn, kref);
++
++ kfree(mc->conn_description);
++ kfree(mc->owned_names_items);
++ kfree(mc);
++}
++
++/**
++ * kdbus_meta_conn_ref() - Gain reference
++ * @mc: Connection metadata object
++ */
++struct kdbus_meta_conn *kdbus_meta_conn_ref(struct kdbus_meta_conn *mc)
++{
++ if (mc)
++ kref_get(&mc->kref);
++ return mc;
++}
++
++/**
++ * kdbus_meta_conn_unref() - Drop reference
++ * @mc: Connection metadata object
++ */
++struct kdbus_meta_conn *kdbus_meta_conn_unref(struct kdbus_meta_conn *mc)
++{
++ if (mc)
++ kref_put(&mc->kref, kdbus_meta_conn_free);
++ return NULL;
++}
++
++static void kdbus_meta_conn_collect_timestamp(struct kdbus_meta_conn *mc,
++ struct kdbus_kmsg *kmsg)
++{
++ mc->ts.monotonic_ns = ktime_get_ns();
++ mc->ts.realtime_ns = ktime_get_real_ns();
++
++ if (kmsg)
++ mc->ts.seqnum = kmsg->seq;
++
++ mc->valid |= KDBUS_ATTACH_TIMESTAMP;
++}
++
++static int kdbus_meta_conn_collect_names(struct kdbus_meta_conn *mc,
++ struct kdbus_conn *conn)
++{
++ const struct kdbus_name_entry *e;
++ struct kdbus_item *item;
++ size_t slen, size;
++
++ lockdep_assert_held(&conn->ep->bus->name_registry->rwlock);
++
++ size = 0;
++ list_for_each_entry(e, &conn->names_list, conn_entry)
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_name) +
++ strlen(e->name) + 1);
++
++ if (!size)
++ return 0;
++
++ item = kmalloc(size, GFP_KERNEL);
++ if (!item)
++ return -ENOMEM;
++
++ mc->owned_names_items = item;
++ mc->owned_names_size = size;
++
++ list_for_each_entry(e, &conn->names_list, conn_entry) {
++ slen = strlen(e->name) + 1;
++ kdbus_item_set(item, KDBUS_ITEM_OWNED_NAME, NULL,
++ sizeof(struct kdbus_name) + slen);
++ item->name.flags = e->flags;
++ memcpy(item->name.name, e->name, slen);
++ item = KDBUS_ITEM_NEXT(item);
++ }
++
++ /* sanity check: the buffer should be completely written now */
++ WARN_ON((u8 *)item != (u8 *)mc->owned_names_items + size);
++
++ mc->valid |= KDBUS_ATTACH_NAMES;
++ return 0;
++}
++
++static int kdbus_meta_conn_collect_description(struct kdbus_meta_conn *mc,
++ struct kdbus_conn *conn)
++{
++ if (!conn->description)
++ return 0;
++
++ mc->conn_description = kstrdup(conn->description, GFP_KERNEL);
++ if (!mc->conn_description)
++ return -ENOMEM;
++
++ mc->valid |= KDBUS_ATTACH_CONN_DESCRIPTION;
++ return 0;
++}
++
++/**
++ * kdbus_meta_conn_collect() - Collect connection metadata
++ * @mc: Message metadata object
++ * @kmsg: Kmsg to collect data from
++ * @conn: Connection to collect data from
++ * @what: Attach flags to collect
++ *
++ * This collects connection metadata from @kmsg and @conn and saves it in @mc.
++ *
++ * If KDBUS_ATTACH_NAMES is set in @what and @conn is non-NULL, the caller must
++ * hold the name-registry read-lock of conn->ep->bus->registry.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_meta_conn_collect(struct kdbus_meta_conn *mc,
++ struct kdbus_kmsg *kmsg,
++ struct kdbus_conn *conn,
++ u64 what)
++{
++ int ret;
++
++ if (!mc || !(what & (KDBUS_ATTACH_TIMESTAMP |
++ KDBUS_ATTACH_NAMES |
++ KDBUS_ATTACH_CONN_DESCRIPTION)))
++ return 0;
++
++ mutex_lock(&mc->lock);
++
++ if (kmsg && (what & KDBUS_ATTACH_TIMESTAMP) &&
++ !(mc->collected & KDBUS_ATTACH_TIMESTAMP)) {
++ kdbus_meta_conn_collect_timestamp(mc, kmsg);
++ mc->collected |= KDBUS_ATTACH_TIMESTAMP;
++ }
++
++ if (conn && (what & KDBUS_ATTACH_NAMES) &&
++ !(mc->collected & KDBUS_ATTACH_NAMES)) {
++ ret = kdbus_meta_conn_collect_names(mc, conn);
++ if (ret < 0)
++ goto exit_unlock;
++ mc->collected |= KDBUS_ATTACH_NAMES;
++ }
++
++ if (conn && (what & KDBUS_ATTACH_CONN_DESCRIPTION) &&
++ !(mc->collected & KDBUS_ATTACH_CONN_DESCRIPTION)) {
++ ret = kdbus_meta_conn_collect_description(mc, conn);
++ if (ret < 0)
++ goto exit_unlock;
++ mc->collected |= KDBUS_ATTACH_CONN_DESCRIPTION;
++ }
++
++ ret = 0;
++
++exit_unlock:
++ mutex_unlock(&mc->lock);
++ return ret;
++}
++
++/*
++ * kdbus_meta_export_prepare() - Prepare metadata for export
++ * @mp: Process metadata, or NULL
++ * @mc: Connection metadata, or NULL
++ * @mask: Pointer to mask of KDBUS_ATTACH_* flags to export
++ * @sz: Pointer to return the size needed by the metadata
++ *
++ * Does a conservative calculation of how much space metadata information
++ * will take up during export. It is 'conservative' because for string
++ * translations in namespaces, it will use the kernel namespaces, which is
++ * the longest possible version.
++ *
++ * The actual size consumed by kdbus_meta_export() may hence vary from the
++ * one reported here, but it is guaranteed never to be greater.
++ *
++ * Return: 0 on success, negative error number otherwise.
++ */
++int kdbus_meta_export_prepare(struct kdbus_meta_proc *mp,
++ struct kdbus_meta_conn *mc,
++ u64 *mask, size_t *sz)
++{
++ char *exe_pathname = NULL;
++ void *exe_page = NULL;
++ size_t size = 0;
++ u64 valid = 0;
++ int ret = 0;
++
++ if (mp) {
++ mutex_lock(&mp->lock);
++ valid |= mp->valid;
++ mutex_unlock(&mp->lock);
++ }
++
++ if (mc) {
++ mutex_lock(&mc->lock);
++ valid |= mc->valid;
++ mutex_unlock(&mc->lock);
++ }
++
++ *mask &= valid;
++ *mask &= kdbus_meta_attach_mask;
++
++ if (!*mask)
++ goto exit;
++
++ /* process metadata */
++
++ if (mp && (*mask & KDBUS_ATTACH_CREDS))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_creds));
++
++ if (mp && (*mask & KDBUS_ATTACH_PIDS))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_pids));
++
++ if (mp && (*mask & KDBUS_ATTACH_AUXGROUPS))
++ size += KDBUS_ITEM_SIZE(mp->n_auxgrps * sizeof(u64));
++
++ if (mp && (*mask & KDBUS_ATTACH_TID_COMM))
++ size += KDBUS_ITEM_SIZE(strlen(mp->tid_comm) + 1);
++
++ if (mp && (*mask & KDBUS_ATTACH_PID_COMM))
++ size += KDBUS_ITEM_SIZE(strlen(mp->pid_comm) + 1);
++
++ if (mp && (*mask & KDBUS_ATTACH_EXE)) {
++ exe_page = (void *)__get_free_page(GFP_TEMPORARY);
++ if (!exe_page) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ exe_pathname = d_path(&mp->exe_path, exe_page, PAGE_SIZE);
++ if (IS_ERR(exe_pathname)) {
++ ret = PTR_ERR(exe_pathname);
++ goto exit;
++ }
++
++ size += KDBUS_ITEM_SIZE(strlen(exe_pathname) + 1);
++ free_page((unsigned long)exe_page);
++ }
++
++ if (mp && (*mask & KDBUS_ATTACH_CMDLINE))
++ size += KDBUS_ITEM_SIZE(strlen(mp->cmdline) + 1);
++
++ if (mp && (*mask & KDBUS_ATTACH_CGROUP))
++ size += KDBUS_ITEM_SIZE(strlen(mp->cgroup) + 1);
++
++ if (mp && (*mask & KDBUS_ATTACH_CAPS))
++ size += KDBUS_ITEM_SIZE(sizeof(mp->caps));
++
++ if (mp && (*mask & KDBUS_ATTACH_SECLABEL))
++ size += KDBUS_ITEM_SIZE(strlen(mp->seclabel) + 1);
++
++ if (mp && (*mask & KDBUS_ATTACH_AUDIT))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_audit));
++
++ /* connection metadata */
++
++ if (mc && (*mask & KDBUS_ATTACH_NAMES))
++ size += mc->owned_names_size;
++
++ if (mc && (*mask & KDBUS_ATTACH_CONN_DESCRIPTION))
++ size += KDBUS_ITEM_SIZE(strlen(mc->conn_description) + 1);
++
++ if (mc && (*mask & KDBUS_ATTACH_TIMESTAMP))
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_timestamp));
++
++exit:
++ *sz = size;
++
++ return ret;
++}
++
++static int kdbus_meta_push_kvec(struct kvec *kvec,
++ struct kdbus_item_header *hdr,
++ u64 type, void *payload,
++ size_t payload_size, u64 *size)
++{
++ hdr->type = type;
++ hdr->size = KDBUS_ITEM_HEADER_SIZE + payload_size;
++ kdbus_kvec_set(kvec++, hdr, sizeof(*hdr), size);
++ kdbus_kvec_set(kvec++, payload, payload_size, size);
++ return 2 + !!kdbus_kvec_pad(kvec++, size);
++}
++
++/* This is equivalent to from_kuid_munged(), but maps INVALID_UID to itself */
++static uid_t kdbus_from_kuid_keep(kuid_t uid)
++{
++ return uid_valid(uid) ?
++ from_kuid_munged(current_user_ns(), uid) : ((uid_t)-1);
++}
++
++/* This is equivalent to from_kgid_munged(), but maps INVALID_GID to itself */
++static gid_t kdbus_from_kgid_keep(kgid_t gid)
++{
++ return gid_valid(gid) ?
++ from_kgid_munged(current_user_ns(), gid) : ((gid_t)-1);
++}
++
++/**
++ * kdbus_meta_export() - export information from metadata into a slice
++ * @mp: Process metadata, or NULL
++ * @mc: Connection metadata, or NULL
++ * @mask: Mask of KDBUS_ATTACH_* flags to export
++ * @slice: The slice to export to
++ * @offset: The offset inside @slice to write to
++ * @real_size: The real size the metadata consumed
++ *
++ * This function exports information from metadata into @slice at offset
++ * @offset inside that slice. Only information that is requested in @mask
++ * and that has been collected before is exported.
++ *
++ * In order to make sure not to write out of bounds, @mask must be the same
++ * value that was previously returned from kdbus_meta_export_prepare(). The
++ * function will, however, not necessarily write as many bytes as returned by
++ * kdbus_meta_export_prepare(); depending on the namespaces in question, it
++ * might use up less than that.
++ *
++ * All information will be translated using the current namespaces.
++ *
++ * Return: 0 on success, negative error number otherwise.
++ */
++int kdbus_meta_export(struct kdbus_meta_proc *mp,
++ struct kdbus_meta_conn *mc,
++ u64 mask,
++ struct kdbus_pool_slice *slice,
++ off_t offset,
++ size_t *real_size)
++{
++ struct user_namespace *user_ns = current_user_ns();
++ struct kdbus_item_header item_hdr[13], *hdr;
++ char *exe_pathname = NULL;
++ struct kdbus_creds creds;
++ struct kdbus_pids pids;
++ void *exe_page = NULL;
++ struct kvec kvec[40];
++ u64 *auxgrps = NULL;
++ size_t cnt = 0;
++ u64 size = 0;
++ int ret = 0;
++
++ hdr = &item_hdr[0];
++
++ /*
++ * TODO: We currently have no sane way of translating a set of caps
++ * between different user namespaces. Until that changes, we have
++ * to drop such items.
++ */
++ if (mp && mp->caps_namespace != user_ns)
++ mask &= ~KDBUS_ATTACH_CAPS;
++
++ if (mask == 0) {
++ *real_size = 0;
++ return 0;
++ }
++
++ /* process metadata */
++
++ if (mp && (mask & KDBUS_ATTACH_CREDS)) {
++ creds.uid = kdbus_from_kuid_keep(mp->uid);
++ creds.euid = kdbus_from_kuid_keep(mp->euid);
++ creds.suid = kdbus_from_kuid_keep(mp->suid);
++ creds.fsuid = kdbus_from_kuid_keep(mp->fsuid);
++ creds.gid = kdbus_from_kgid_keep(mp->gid);
++ creds.egid = kdbus_from_kgid_keep(mp->egid);
++ creds.sgid = kdbus_from_kgid_keep(mp->sgid);
++ creds.fsgid = kdbus_from_kgid_keep(mp->fsgid);
++
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++, KDBUS_ITEM_CREDS,
++ &creds, sizeof(creds), &size);
++ }
++
++ if (mp && (mask & KDBUS_ATTACH_PIDS)) {
++ pids.pid = pid_vnr(mp->tgid);
++ pids.tid = pid_vnr(mp->pid);
++ pids.ppid = pid_vnr(mp->ppid);
++
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++, KDBUS_ITEM_PIDS,
++ &pids, sizeof(pids), &size);
++ }
++
++ if (mp && (mask & KDBUS_ATTACH_AUXGROUPS)) {
++ size_t payload_size = mp->n_auxgrps * sizeof(u64);
++ int i;
++
++ auxgrps = kmalloc(payload_size, GFP_KERNEL);
++ if (!auxgrps) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ for (i = 0; i < mp->n_auxgrps; i++)
++ auxgrps[i] = from_kgid_munged(user_ns, mp->auxgrps[i]);
++
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_AUXGROUPS,
++ auxgrps, payload_size, &size);
++ }
++
++ if (mp && (mask & KDBUS_ATTACH_TID_COMM))
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_TID_COMM, mp->tid_comm,
++ strlen(mp->tid_comm) + 1, &size);
++
++ if (mp && (mask & KDBUS_ATTACH_PID_COMM))
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_PID_COMM, mp->pid_comm,
++ strlen(mp->pid_comm) + 1, &size);
++
++ if (mp && (mask & KDBUS_ATTACH_EXE)) {
++ struct path p;
++
++ /*
++ * TODO: We need access to __d_path() so we can write the path
++ * relative to conn->root_path. Once upstream, we need
++ * EXPORT_SYMBOL(__d_path) or an equivalent of d_path() that
++ * takes the root path directly. Until then, we drop this item
++ * if the root-paths differ.
++ */
++
++ get_fs_root(current->fs, &p);
++ if (path_equal(&p, &mp->root_path)) {
++ exe_page = (void *)__get_free_page(GFP_TEMPORARY);
++ if (!exe_page) {
++ path_put(&p);
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ exe_pathname = d_path(&mp->exe_path, exe_page,
++ PAGE_SIZE);
++ if (IS_ERR(exe_pathname)) {
++ path_put(&p);
++ ret = PTR_ERR(exe_pathname);
++ goto exit;
++ }
++
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_EXE,
++ exe_pathname,
++ strlen(exe_pathname) + 1,
++ &size);
++ }
++ path_put(&p);
++ }
++
++ if (mp && (mask & KDBUS_ATTACH_CMDLINE))
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_CMDLINE, mp->cmdline,
++ strlen(mp->cmdline) + 1, &size);
++
++ if (mp && (mask & KDBUS_ATTACH_CGROUP))
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_CGROUP, mp->cgroup,
++ strlen(mp->cgroup) + 1, &size);
++
++ if (mp && (mask & KDBUS_ATTACH_CAPS))
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_CAPS, &mp->caps,
++ sizeof(mp->caps), &size);
++
++ if (mp && (mask & KDBUS_ATTACH_SECLABEL))
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_SECLABEL, mp->seclabel,
++ strlen(mp->seclabel) + 1, &size);
++
++ if (mp && (mask & KDBUS_ATTACH_AUDIT)) {
++ struct kdbus_audit a = {
++ .loginuid = from_kuid(user_ns, mp->audit_loginuid),
++ .sessionid = mp->audit_sessionid,
++ };
++
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++, KDBUS_ITEM_AUDIT,
++ &a, sizeof(a), &size);
++ }
++
++ /* connection metadata */
++
++ if (mc && (mask & KDBUS_ATTACH_NAMES))
++ kdbus_kvec_set(&kvec[cnt++], mc->owned_names_items,
++ mc->owned_names_size, &size);
++
++ if (mc && (mask & KDBUS_ATTACH_CONN_DESCRIPTION))
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_CONN_DESCRIPTION,
++ mc->conn_description,
++ strlen(mc->conn_description) + 1,
++ &size);
++
++ if (mc && (mask & KDBUS_ATTACH_TIMESTAMP))
++ cnt += kdbus_meta_push_kvec(kvec + cnt, hdr++,
++ KDBUS_ITEM_TIMESTAMP, &mc->ts,
++ sizeof(mc->ts), &size);
++
++ ret = kdbus_pool_slice_copy_kvec(slice, offset, kvec, cnt, size);
++ *real_size = size;
++
++exit:
++ kfree(auxgrps);
++
++ if (exe_page)
++ free_page((unsigned long)exe_page);
++
++ return ret;
++}
++
++/**
++ * kdbus_meta_calc_attach_flags() - calculate attach flags for a sender
++ * and a receiver
++ * @sender: Sending connection
++ * @receiver: Receiving connection
++ *
++ * Return: the attach flags both the sender and the receiver have opted-in
++ * for.
++ */
++u64 kdbus_meta_calc_attach_flags(const struct kdbus_conn *sender,
++ const struct kdbus_conn *receiver)
++{
++ return atomic64_read(&sender->attach_flags_send) &
++ atomic64_read(&receiver->attach_flags_recv);
++}
+diff --git a/ipc/kdbus/metadata.h b/ipc/kdbus/metadata.h
+new file mode 100644
+index 0000000..42c942b
+--- /dev/null
++++ b/ipc/kdbus/metadata.h
+@@ -0,0 +1,57 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_METADATA_H
++#define __KDBUS_METADATA_H
++
++#include <linux/kernel.h>
++
++struct kdbus_conn;
++struct kdbus_kmsg;
++struct kdbus_pool_slice;
++
++struct kdbus_meta_proc;
++struct kdbus_meta_conn;
++
++extern unsigned long long kdbus_meta_attach_mask;
++
++struct kdbus_meta_proc *kdbus_meta_proc_new(void);
++struct kdbus_meta_proc *kdbus_meta_proc_ref(struct kdbus_meta_proc *mp);
++struct kdbus_meta_proc *kdbus_meta_proc_unref(struct kdbus_meta_proc *mp);
++int kdbus_meta_proc_collect(struct kdbus_meta_proc *mp, u64 what);
++int kdbus_meta_proc_fake(struct kdbus_meta_proc *mp,
++ const struct kdbus_creds *creds,
++ const struct kdbus_pids *pids,
++ const char *seclabel);
++
++struct kdbus_meta_conn *kdbus_meta_conn_new(void);
++struct kdbus_meta_conn *kdbus_meta_conn_ref(struct kdbus_meta_conn *mc);
++struct kdbus_meta_conn *kdbus_meta_conn_unref(struct kdbus_meta_conn *mc);
++int kdbus_meta_conn_collect(struct kdbus_meta_conn *mc,
++ struct kdbus_kmsg *kmsg,
++ struct kdbus_conn *conn,
++ u64 what);
++
++int kdbus_meta_export_prepare(struct kdbus_meta_proc *mp,
++ struct kdbus_meta_conn *mc,
++ u64 *mask, size_t *sz);
++int kdbus_meta_export(struct kdbus_meta_proc *mp,
++ struct kdbus_meta_conn *mc,
++ u64 mask,
++ struct kdbus_pool_slice *slice,
++ off_t offset, size_t *real_size);
++u64 kdbus_meta_calc_attach_flags(const struct kdbus_conn *sender,
++ const struct kdbus_conn *receiver);
++
++#endif
+diff --git a/ipc/kdbus/names.c b/ipc/kdbus/names.c
+new file mode 100644
+index 0000000..657008e
+--- /dev/null
++++ b/ipc/kdbus/names.c
+@@ -0,0 +1,772 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/ctype.h>
++#include <linux/fs.h>
++#include <linux/hash.h>
++#include <linux/idr.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/rwsem.h>
++#include <linux/sched.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/uio.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "endpoint.h"
++#include "handle.h"
++#include "item.h"
++#include "names.h"
++#include "notify.h"
++#include "policy.h"
++
++struct kdbus_name_pending {
++ u64 flags;
++ struct kdbus_conn *conn;
++ struct kdbus_name_entry *name;
++ struct list_head conn_entry;
++ struct list_head name_entry;
++};
++
++static int kdbus_name_pending_new(struct kdbus_name_entry *e,
++ struct kdbus_conn *conn, u64 flags)
++{
++ struct kdbus_name_pending *p;
++
++ kdbus_conn_assert_active(conn);
++
++ p = kmalloc(sizeof(*p), GFP_KERNEL);
++ if (!p)
++ return -ENOMEM;
++
++ p->flags = flags;
++ p->conn = conn;
++ p->name = e;
++ list_add_tail(&p->conn_entry, &conn->names_queue_list);
++ list_add_tail(&p->name_entry, &e->queue);
++
++ return 0;
++}
++
++static void kdbus_name_pending_free(struct kdbus_name_pending *p)
++{
++ if (!p)
++ return;
++
++ list_del(&p->name_entry);
++ list_del(&p->conn_entry);
++ kfree(p);
++}
++
++static struct kdbus_name_entry *
++kdbus_name_entry_new(struct kdbus_name_registry *r, u32 hash, const char *name)
++{
++ struct kdbus_name_entry *e;
++ size_t namelen;
++
++ namelen = strlen(name);
++
++ e = kmalloc(sizeof(*e) + namelen + 1, GFP_KERNEL);
++ if (!e)
++ return ERR_PTR(-ENOMEM);
++
++ e->name_id = ++r->name_seq_last;
++ e->flags = 0;
++ e->conn = NULL;
++ e->activator = NULL;
++ INIT_LIST_HEAD(&e->queue);
++ INIT_LIST_HEAD(&e->conn_entry);
++ hash_add(r->entries_hash, &e->hentry, hash);
++ memcpy(e->name, name, namelen + 1);
++
++ return e;
++}
++
++static void kdbus_name_entry_free(struct kdbus_name_entry *e)
++{
++ if (!e)
++ return;
++
++ WARN_ON(!list_empty(&e->conn_entry));
++ WARN_ON(!list_empty(&e->queue));
++ WARN_ON(e->activator);
++ WARN_ON(e->conn);
++
++ hash_del(&e->hentry);
++ kfree(e);
++}
++
++static void kdbus_name_entry_set_owner(struct kdbus_name_entry *e,
++ struct kdbus_conn *conn, u64 flags)
++{
++ WARN_ON(e->conn);
++
++ e->conn = kdbus_conn_ref(conn);
++ e->flags = flags;
++ atomic_inc(&conn->name_count);
++ list_add_tail(&e->conn_entry, &e->conn->names_list);
++}
++
++static void kdbus_name_entry_remove_owner(struct kdbus_name_entry *e)
++{
++ WARN_ON(!e->conn);
++
++ list_del_init(&e->conn_entry);
++ atomic_dec(&e->conn->name_count);
++ e->flags = 0;
++ e->conn = kdbus_conn_unref(e->conn);
++}
++
++static void kdbus_name_entry_replace_owner(struct kdbus_name_entry *e,
++ struct kdbus_conn *conn, u64 flags)
++{
++ if (WARN_ON(!e->conn) || WARN_ON(conn == e->conn))
++ return;
++
++ kdbus_notify_name_change(conn->ep->bus, KDBUS_ITEM_NAME_CHANGE,
++ e->conn->id, conn->id,
++ e->flags, flags, e->name);
++ kdbus_name_entry_remove_owner(e);
++ kdbus_name_entry_set_owner(e, conn, flags);
++}
++
++/**
++ * kdbus_name_is_valid() - check if a name is valid
++ * @p: The name to check
++ * @allow_wildcard: Whether or not to allow a wildcard name
++ *
++ * A name is valid if all of the following criterias are met:
++ *
++ * - The name has two or more elements separated by a period ('.') character.
++ * - All elements must contain at least one character.
++ * - Each element must only contain the ASCII characters "[A-Z][a-z][0-9]_-"
++ * and must not begin with a digit.
++ * - The name must not exceed KDBUS_NAME_MAX_LEN.
++ * - If @allow_wildcard is true, the name may end on '.*'
++ */
++bool kdbus_name_is_valid(const char *p, bool allow_wildcard)
++{
++ bool dot, found_dot = false;
++ const char *q;
++
++ for (dot = true, q = p; *q; q++) {
++ if (*q == '.') {
++ if (dot)
++ return false;
++
++ found_dot = true;
++ dot = true;
++ } else {
++ bool good;
++
++ good = isalpha(*q) || (!dot && isdigit(*q)) ||
++ *q == '_' || *q == '-' ||
++ (allow_wildcard && dot &&
++ *q == '*' && *(q + 1) == '\0');
++
++ if (!good)
++ return false;
++
++ dot = false;
++ }
++ }
++
++ if (q - p > KDBUS_NAME_MAX_LEN)
++ return false;
++
++ if (dot)
++ return false;
++
++ if (!found_dot)
++ return false;
++
++ return true;
++}
++
++/**
++ * kdbus_name_registry_new() - create a new name registry
++ *
++ * Return: a new kdbus_name_registry on success, ERR_PTR on failure.
++ */
++struct kdbus_name_registry *kdbus_name_registry_new(void)
++{
++ struct kdbus_name_registry *r;
++
++ r = kmalloc(sizeof(*r), GFP_KERNEL);
++ if (!r)
++ return ERR_PTR(-ENOMEM);
++
++ hash_init(r->entries_hash);
++ init_rwsem(&r->rwlock);
++ r->name_seq_last = 0;
++
++ return r;
++}
++
++/**
++ * kdbus_name_registry_free() - drop a name reg's reference
++ * @reg: The name registry, may be %NULL
++ *
++ * Cleanup the name registry's internal structures.
++ */
++void kdbus_name_registry_free(struct kdbus_name_registry *reg)
++{
++ if (!reg)
++ return;
++
++ WARN_ON(!hash_empty(reg->entries_hash));
++ kfree(reg);
++}
++
++static struct kdbus_name_entry *
++kdbus_name_find(struct kdbus_name_registry *reg, u32 hash, const char *name)
++{
++ struct kdbus_name_entry *e;
++
++ lockdep_assert_held(®->rwlock);
++
++ hash_for_each_possible(reg->entries_hash, e, hentry, hash)
++ if (strcmp(e->name, name) == 0)
++ return e;
++
++ return NULL;
++}
++
++/**
++ * kdbus_name_lookup_unlocked() - lookup name in registry
++ * @reg: name registry
++ * @name: name to lookup
++ *
++ * This looks up @name in the given name-registry and returns the
++ * kdbus_name_entry object. The caller must hold the registry-lock and must not
++ * access the returned object after releasing the lock.
++ *
++ * Return: Pointer to name-entry, or NULL if not found.
++ */
++struct kdbus_name_entry *
++kdbus_name_lookup_unlocked(struct kdbus_name_registry *reg, const char *name)
++{
++ return kdbus_name_find(reg, kdbus_strhash(name), name);
++}
++
++/**
++ * kdbus_name_acquire() - acquire a name
++ * @reg: The name registry
++ * @conn: The connection to pin this entry to
++ * @name: The name to acquire
++ * @flags: Acquisition flags (KDBUS_NAME_*)
++ * @return_flags: Pointer to return flags for the acquired name
++ * (KDBUS_NAME_*), may be %NULL
++ *
++ * Callers must ensure that @conn is either a privileged bus user or has
++ * sufficient privileges in the policy-db to own the well-known name @name.
++ *
++ * Return: 0 success, negative error number on failure.
++ */
++int kdbus_name_acquire(struct kdbus_name_registry *reg,
++ struct kdbus_conn *conn, const char *name,
++ u64 flags, u64 *return_flags)
++{
++ struct kdbus_name_entry *e;
++ u64 rflags = 0;
++ int ret = 0;
++ u32 hash;
++
++ kdbus_conn_assert_active(conn);
++
++ down_write(®->rwlock);
++
++ if (!kdbus_conn_policy_own_name(conn, current_cred(), name)) {
++ ret = -EPERM;
++ goto exit_unlock;
++ }
++
++ hash = kdbus_strhash(name);
++ e = kdbus_name_find(reg, hash, name);
++ if (!e) {
++ /* claim new name */
++
++ if (conn->activator_of) {
++ ret = -EINVAL;
++ goto exit_unlock;
++ }
++
++ e = kdbus_name_entry_new(reg, hash, name);
++ if (IS_ERR(e)) {
++ ret = PTR_ERR(e);
++ goto exit_unlock;
++ }
++
++ if (kdbus_conn_is_activator(conn)) {
++ e->activator = kdbus_conn_ref(conn);
++ conn->activator_of = e;
++ }
++
++ kdbus_name_entry_set_owner(e, conn, flags);
++ kdbus_notify_name_change(e->conn->ep->bus, KDBUS_ITEM_NAME_ADD,
++ 0, e->conn->id, 0, e->flags, e->name);
++ } else if (e->conn == conn || e == conn->activator_of) {
++ /* connection already owns that name */
++ ret = -EALREADY;
++ } else if (kdbus_conn_is_activator(conn)) {
++ /* activator claims existing name */
++
++ if (conn->activator_of) {
++ ret = -EINVAL; /* multiple names not allowed */
++ } else if (e->activator) {
++ ret = -EEXIST; /* only one activator per name */
++ } else {
++ e->activator = kdbus_conn_ref(conn);
++ conn->activator_of = e;
++ }
++ } else if (e->flags & KDBUS_NAME_ACTIVATOR) {
++ /* claim name of an activator */
++
++ kdbus_conn_move_messages(conn, e->activator, 0);
++ kdbus_name_entry_replace_owner(e, conn, flags);
++ } else if ((flags & KDBUS_NAME_REPLACE_EXISTING) &&
++ (e->flags & KDBUS_NAME_ALLOW_REPLACEMENT)) {
++ /* claim name of a previous owner */
++
++ if (e->flags & KDBUS_NAME_QUEUE) {
++ /* move owner back to queue if they asked for it */
++ ret = kdbus_name_pending_new(e, e->conn, e->flags);
++ if (ret < 0)
++ goto exit_unlock;
++ }
++
++ kdbus_name_entry_replace_owner(e, conn, flags);
++ } else if (flags & KDBUS_NAME_QUEUE) {
++ /* add to waiting-queue of the name */
++
++ ret = kdbus_name_pending_new(e, conn, flags);
++ if (ret >= 0)
++ /* tell the caller that we queued it */
++ rflags |= KDBUS_NAME_IN_QUEUE;
++ } else {
++ /* the name is busy, return a failure */
++ ret = -EEXIST;
++ }
++
++ if (ret == 0 && return_flags)
++ *return_flags = rflags;
++
++exit_unlock:
++ up_write(®->rwlock);
++ kdbus_notify_flush(conn->ep->bus);
++ return ret;
++}
++
++static void kdbus_name_release_unlocked(struct kdbus_name_registry *reg,
++ struct kdbus_name_entry *e)
++{
++ struct kdbus_name_pending *p;
++
++ lockdep_assert_held(®->rwlock);
++
++ p = list_first_entry_or_null(&e->queue, struct kdbus_name_pending,
++ name_entry);
++
++ if (p) {
++ /* give it to first active waiter in the queue */
++ kdbus_name_entry_replace_owner(e, p->conn, p->flags);
++ kdbus_name_pending_free(p);
++ } else if (e->activator && e->activator != e->conn) {
++ /* hand it back to an active activator connection */
++ kdbus_conn_move_messages(e->activator, e->conn, e->name_id);
++ kdbus_name_entry_replace_owner(e, e->activator,
++ KDBUS_NAME_ACTIVATOR);
++ } else {
++ /* release the name */
++ kdbus_notify_name_change(e->conn->ep->bus,
++ KDBUS_ITEM_NAME_REMOVE,
++ e->conn->id, 0, e->flags, 0, e->name);
++ kdbus_name_entry_remove_owner(e);
++ kdbus_name_entry_free(e);
++ }
++}
++
++static int kdbus_name_release(struct kdbus_name_registry *reg,
++ struct kdbus_conn *conn,
++ const char *name)
++{
++ struct kdbus_name_pending *p;
++ struct kdbus_name_entry *e;
++ int ret = 0;
++
++ down_write(®->rwlock);
++ e = kdbus_name_find(reg, kdbus_strhash(name), name);
++ if (!e) {
++ ret = -ESRCH;
++ } else if (e->conn == conn) {
++ kdbus_name_release_unlocked(reg, e);
++ } else {
++ ret = -EADDRINUSE;
++ list_for_each_entry(p, &e->queue, name_entry) {
++ if (p->conn == conn) {
++ kdbus_name_pending_free(p);
++ ret = 0;
++ break;
++ }
++ }
++ }
++ up_write(®->rwlock);
++
++ kdbus_notify_flush(conn->ep->bus);
++ return ret;
++}
++
++/**
++ * kdbus_name_release_all() - remove all name entries of a given connection
++ * @reg: name registry
++ * @conn: connection
++ */
++void kdbus_name_release_all(struct kdbus_name_registry *reg,
++ struct kdbus_conn *conn)
++{
++ struct kdbus_name_pending *p;
++ struct kdbus_conn *activator = NULL;
++ struct kdbus_name_entry *e;
++
++ down_write(®->rwlock);
++
++ if (kdbus_conn_is_activator(conn)) {
++ activator = conn->activator_of->activator;
++ conn->activator_of->activator = NULL;
++ }
++
++ while ((p = list_first_entry_or_null(&conn->names_queue_list,
++ struct kdbus_name_pending,
++ conn_entry)))
++ kdbus_name_pending_free(p);
++ while ((e = list_first_entry_or_null(&conn->names_list,
++ struct kdbus_name_entry,
++ conn_entry)))
++ kdbus_name_release_unlocked(reg, e);
++
++ up_write(®->rwlock);
++
++ kdbus_conn_unref(activator);
++ kdbus_notify_flush(conn->ep->bus);
++}
++
++/**
++ * kdbus_cmd_name_acquire() - handle KDBUS_CMD_NAME_ACQUIRE
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_name_acquire(struct kdbus_conn *conn, void __user *argp)
++{
++ const char *item_name;
++ struct kdbus_cmd *cmd;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_NAME, .mandatory = true },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_NAME_REPLACE_EXISTING |
++ KDBUS_NAME_ALLOW_REPLACEMENT |
++ KDBUS_NAME_QUEUE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ if (!kdbus_conn_is_ordinary(conn))
++ return -EOPNOTSUPP;
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ item_name = argv[1].item->str;
++ if (!kdbus_name_is_valid(item_name, false)) {
++ ret = -EINVAL;
++ goto exit;
++ }
++
++ /*
++ * Do atomic_inc_return here to reserve our slot, then decrement
++ * it before returning.
++ */
++ if (atomic_inc_return(&conn->name_count) > KDBUS_CONN_MAX_NAMES) {
++ ret = -E2BIG;
++ goto exit_dec;
++ }
++
++ ret = kdbus_name_acquire(conn->ep->bus->name_registry, conn, item_name,
++ cmd->flags, &cmd->return_flags);
++ if (ret < 0)
++ goto exit_dec;
++
++exit_dec:
++ atomic_dec(&conn->name_count);
++exit:
++ return kdbus_args_clear(&args, ret);
++}
++
++/**
++ * kdbus_cmd_name_release() - handle KDBUS_CMD_NAME_RELEASE
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_name_release(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_cmd *cmd;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ { .type = KDBUS_ITEM_NAME, .mandatory = true },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ if (!kdbus_conn_is_ordinary(conn))
++ return -EOPNOTSUPP;
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ ret = kdbus_name_release(conn->ep->bus->name_registry, conn,
++ argv[1].item->str);
++ return kdbus_args_clear(&args, ret);
++}
++
++static int kdbus_list_write(struct kdbus_conn *conn,
++ struct kdbus_conn *c,
++ struct kdbus_pool_slice *slice,
++ size_t *pos,
++ struct kdbus_name_entry *e,
++ bool write)
++{
++ struct kvec kvec[4];
++ size_t cnt = 0;
++ int ret;
++
++ /* info header */
++ struct kdbus_info info = {
++ .size = 0,
++ .id = c->id,
++ .flags = c->flags,
++ };
++
++ /* fake the header of a kdbus_name item */
++ struct {
++ u64 size;
++ u64 type;
++ u64 flags;
++ } h = {};
++
++ if (e && !kdbus_conn_policy_see_name_unlocked(conn, current_cred(),
++ e->name))
++ return 0;
++
++ kdbus_kvec_set(&kvec[cnt++], &info, sizeof(info), &info.size);
++
++ /* append name */
++ if (e) {
++ size_t slen = strlen(e->name) + 1;
++
++ h.size = offsetof(struct kdbus_item, name.name) + slen;
++ h.type = KDBUS_ITEM_OWNED_NAME;
++ h.flags = e->flags;
++
++ kdbus_kvec_set(&kvec[cnt++], &h, sizeof(h), &info.size);
++ kdbus_kvec_set(&kvec[cnt++], e->name, slen, &info.size);
++ cnt += !!kdbus_kvec_pad(&kvec[cnt], &info.size);
++ }
++
++ if (write) {
++ ret = kdbus_pool_slice_copy_kvec(slice, *pos, kvec,
++ cnt, info.size);
++ if (ret < 0)
++ return ret;
++ }
++
++ *pos += info.size;
++ return 0;
++}
++
++static int kdbus_list_all(struct kdbus_conn *conn, u64 flags,
++ struct kdbus_pool_slice *slice,
++ size_t *pos, bool write)
++{
++ struct kdbus_conn *c;
++ size_t p = *pos;
++ int ret, i;
++
++ hash_for_each(conn->ep->bus->conn_hash, i, c, hentry) {
++ bool added = false;
++
++ /* skip monitors */
++ if (kdbus_conn_is_monitor(c))
++ continue;
++
++ /* skip activators */
++ if (!(flags & KDBUS_LIST_ACTIVATORS) &&
++ kdbus_conn_is_activator(c))
++ continue;
++
++ /* all names the connection owns */
++ if (flags & (KDBUS_LIST_NAMES | KDBUS_LIST_ACTIVATORS)) {
++ struct kdbus_name_entry *e;
++
++ list_for_each_entry(e, &c->names_list, conn_entry) {
++ struct kdbus_conn *a = e->activator;
++
++ if ((flags & KDBUS_LIST_ACTIVATORS) &&
++ a && a != c) {
++ ret = kdbus_list_write(conn, a, slice,
++ &p, e, write);
++ if (ret < 0) {
++ mutex_unlock(&c->lock);
++ return ret;
++ }
++
++ added = true;
++ }
++
++ if (flags & KDBUS_LIST_NAMES ||
++ kdbus_conn_is_activator(c)) {
++ ret = kdbus_list_write(conn, c, slice,
++ &p, e, write);
++ if (ret < 0) {
++ mutex_unlock(&c->lock);
++ return ret;
++ }
++
++ added = true;
++ }
++ }
++ }
++
++ /* queue of names the connection is currently waiting for */
++ if (flags & KDBUS_LIST_QUEUED) {
++ struct kdbus_name_pending *q;
++
++ list_for_each_entry(q, &c->names_queue_list,
++ conn_entry) {
++ ret = kdbus_list_write(conn, c, slice, &p,
++ q->name, write);
++ if (ret < 0) {
++ mutex_unlock(&c->lock);
++ return ret;
++ }
++
++ added = true;
++ }
++ }
++
++ /* nothing added so far, just add the unique ID */
++ if (!added && flags & KDBUS_LIST_UNIQUE) {
++ ret = kdbus_list_write(conn, c, slice, &p, NULL, write);
++ if (ret < 0)
++ return ret;
++ }
++ }
++
++ *pos = p;
++ return 0;
++}
++
++/**
++ * kdbus_cmd_list() - handle KDBUS_CMD_LIST
++ * @conn: connection to operate on
++ * @argp: command payload
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_cmd_list(struct kdbus_conn *conn, void __user *argp)
++{
++ struct kdbus_name_registry *reg = conn->ep->bus->name_registry;
++ struct kdbus_pool_slice *slice = NULL;
++ struct kdbus_cmd_list *cmd;
++ size_t pos, size;
++ int ret;
++
++ struct kdbus_arg argv[] = {
++ { .type = KDBUS_ITEM_NEGOTIATE },
++ };
++ struct kdbus_args args = {
++ .allowed_flags = KDBUS_FLAG_NEGOTIATE |
++ KDBUS_LIST_UNIQUE |
++ KDBUS_LIST_NAMES |
++ KDBUS_LIST_ACTIVATORS |
++ KDBUS_LIST_QUEUED,
++ .argv = argv,
++ .argc = ARRAY_SIZE(argv),
++ };
++
++ ret = kdbus_args_parse(&args, argp, &cmd);
++ if (ret != 0)
++ return ret;
++
++ /* lock order: domain -> bus -> ep -> names -> conn */
++ down_read(®->rwlock);
++ down_read(&conn->ep->bus->conn_rwlock);
++ down_read(&conn->ep->policy_db.entries_rwlock);
++
++ /* size of records */
++ size = 0;
++ ret = kdbus_list_all(conn, cmd->flags, NULL, &size, false);
++ if (ret < 0)
++ goto exit_unlock;
++
++ if (size == 0) {
++ kdbus_pool_publish_empty(conn->pool, &cmd->offset,
++ &cmd->list_size);
++ } else {
++ slice = kdbus_pool_slice_alloc(conn->pool, size, false);
++ if (IS_ERR(slice)) {
++ ret = PTR_ERR(slice);
++ slice = NULL;
++ goto exit_unlock;
++ }
++
++ /* copy the records */
++ pos = 0;
++ ret = kdbus_list_all(conn, cmd->flags, slice, &pos, true);
++ if (ret < 0)
++ goto exit_unlock;
++
++ WARN_ON(pos != size);
++ kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->list_size);
++ }
++
++ if (kdbus_member_set_user(&cmd->offset, argp, typeof(*cmd), offset) ||
++ kdbus_member_set_user(&cmd->list_size, argp,
++ typeof(*cmd), list_size))
++ ret = -EFAULT;
++
++exit_unlock:
++ up_read(&conn->ep->policy_db.entries_rwlock);
++ up_read(&conn->ep->bus->conn_rwlock);
++ up_read(®->rwlock);
++ kdbus_pool_slice_release(slice);
++ return kdbus_args_clear(&args, ret);
++}
+diff --git a/ipc/kdbus/names.h b/ipc/kdbus/names.h
+new file mode 100644
+index 0000000..3dd2589
+--- /dev/null
++++ b/ipc/kdbus/names.h
+@@ -0,0 +1,74 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_NAMES_H
++#define __KDBUS_NAMES_H
++
++#include <linux/hashtable.h>
++#include <linux/rwsem.h>
++
++/**
++ * struct kdbus_name_registry - names registered for a bus
++ * @entries_hash: Map of entries
++ * @lock: Registry data lock
++ * @name_seq_last: Last used sequence number to assign to a name entry
++ */
++struct kdbus_name_registry {
++ DECLARE_HASHTABLE(entries_hash, 8);
++ struct rw_semaphore rwlock;
++ u64 name_seq_last;
++};
++
++/**
++ * struct kdbus_name_entry - well-know name entry
++ * @name_id: Sequence number of name entry to be able to uniquely
++ * identify a name over its registration lifetime
++ * @flags: KDBUS_NAME_* flags
++ * @conn: Connection owning the name
++ * @activator: Connection of the activator queuing incoming messages
++ * @queue: List of queued connections
++ * @conn_entry: Entry in connection
++ * @hentry: Entry in registry map
++ * @name: The well-known name
++ */
++struct kdbus_name_entry {
++ u64 name_id;
++ u64 flags;
++ struct kdbus_conn *conn;
++ struct kdbus_conn *activator;
++ struct list_head queue;
++ struct list_head conn_entry;
++ struct hlist_node hentry;
++ char name[];
++};
++
++bool kdbus_name_is_valid(const char *p, bool allow_wildcard);
++
++struct kdbus_name_registry *kdbus_name_registry_new(void);
++void kdbus_name_registry_free(struct kdbus_name_registry *reg);
++
++struct kdbus_name_entry *
++kdbus_name_lookup_unlocked(struct kdbus_name_registry *reg, const char *name);
++
++int kdbus_name_acquire(struct kdbus_name_registry *reg,
++ struct kdbus_conn *conn, const char *name,
++ u64 flags, u64 *return_flags);
++void kdbus_name_release_all(struct kdbus_name_registry *reg,
++ struct kdbus_conn *conn);
++
++int kdbus_cmd_name_acquire(struct kdbus_conn *conn, void __user *argp);
++int kdbus_cmd_name_release(struct kdbus_conn *conn, void __user *argp);
++int kdbus_cmd_list(struct kdbus_conn *conn, void __user *argp);
++
++#endif
+diff --git a/ipc/kdbus/node.c b/ipc/kdbus/node.c
+new file mode 100644
+index 0000000..520df00
+--- /dev/null
++++ b/ipc/kdbus/node.c
+@@ -0,0 +1,910 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/atomic.h>
++#include <linux/fs.h>
++#include <linux/idr.h>
++#include <linux/kdev_t.h>
++#include <linux/rbtree.h>
++#include <linux/rwsem.h>
++#include <linux/sched.h>
++#include <linux/slab.h>
++#include <linux/wait.h>
++
++#include "bus.h"
++#include "domain.h"
++#include "endpoint.h"
++#include "fs.h"
++#include "handle.h"
++#include "node.h"
++#include "util.h"
++
++/**
++ * DOC: kdbus nodes
++ *
++ * Nodes unify lifetime management across exposed kdbus objects and provide a
++ * hierarchy. Each kdbus object, that might be exposed to user-space, has a
++ * kdbus_node object embedded and is linked into the hierarchy. Each node can
++ * have any number (0-n) of child nodes linked. Each child retains a reference
++ * to its parent node. For root-nodes, the parent is NULL.
++ *
++ * Each node object goes through a bunch of states during it's lifetime:
++ * * NEW
++ * * LINKED (can be skipped by NEW->FREED transition)
++ * * ACTIVE (can be skipped by LINKED->INACTIVE transition)
++ * * INACTIVE
++ * * DRAINED
++ * * FREED
++ *
++ * Each node is allocated by the caller and initialized via kdbus_node_init().
++ * This never fails and sets the object into state NEW. From now on, ref-counts
++ * on the node manage its lifetime. During init, the ref-count is set to 1. Once
++ * it drops to 0, the node goes to state FREED and the node->free_cb() callback
++ * is called to deallocate any memory.
++ *
++ * After initializing a node, you usually link it into the hierarchy. You need
++ * to provide a parent node and a name. The node will be linked as child to the
++ * parent and a globally unique ID is assigned to the child. The name of the
++ * child must be unique for all children of this parent. Otherwise, linking the
++ * child will fail with -EEXIST.
++ * Note that the child is not marked active, yet. Admittedly, it prevents any
++ * other node from being linked with the same name (thus, it reserves that
++ * name), but any child-lookup (via name or unique ID) will never return this
++ * child unless it has been marked active.
++ *
++ * Once successfully linked, you can use kdbus_node_activate() to activate a
++ * child. This will mark the child active. This state can be skipped by directly
++ * deactivating the child via kdbus_node_deactivate() (see below).
++ * By activating a child, you enable any lookups on this child to succeed from
++ * now on. Furthermore, any code that got its hands on a reference to the node,
++ * can from now on "acquire" the node.
++ *
++ * Active References (or: 'acquiring' and 'releasing' a node)
++ * Additionally to normal object references, nodes support something we call
++ * "active references". An active reference can be acquired via
++ * kdbus_node_acquire() and released via kdbus_node_release(). A caller
++ * _must_ own a normal object reference whenever calling those functions.
++ * Unlike object references, acquiring an active reference can fail (by
++ * returning 'false' from kdbus_node_acquire()). An active reference can
++ * only be acquired if the node is marked active. If it is not marked
++ * active, yet, or if it was already deactivated, no more active references
++ * can be acquired, ever!
++ * Active references are used to track tasks working on a node. Whenever a
++ * task enters kernel-space to perform an action on a node, it acquires an
++ * active reference, performs the action and releases the reference again.
++ * While holding an active reference, the node is guaranteed to stay active.
++ * If the node is deactivated in parallel, the node is marked as
++ * deactivated, then we wait for all active references to be dropped, before
++ * we finally proceed with any cleanups. That is, if you hold an active
++ * reference to a node, any resources that are bound to the "active" state
++ * are guaranteed to stay accessible until you release your reference.
++ *
++ * Active-references are very similar to rw-locks, where acquiring a node is
++ * equal to try-read-lock and releasing to read-unlock. Deactivating a node
++ * means write-lock and never releasing it again.
++ * Unlike rw-locks, the 'active reference' concept is more versatile and
++ * avoids unusual rw-lock usage (never releasing a write-lock..).
++ *
++ * It is safe to acquire multiple active-references recursively. But you
++ * need to check the return value of kdbus_node_acquire() on _each_ call. It
++ * may stop granting references at _any_ time.
++ *
++ * You're free to perform any operations you want while holding an active
++ * reference, except sleeping for an indefinite period. Sleeping for a fixed
++ * amount of time is fine, but you usually should not wait on wait-queues
++ * without a timeout.
++ * For example, if you wait for I/O to happen, you should gather all data
++ * and schedule the I/O operation, then release your active reference and
++ * wait for it to complete. Then try to acquire a new reference. If it
++ * fails, perform any cleanup (the node is now dead). Otherwise, you can
++ * finish your operation.
++ *
++ * All nodes can be deactivated via kdbus_node_deactivate() at any time. You can
++ * call this multiple times, even in parallel or on nodes that were never
++ * linked, and it will just work. The only restriction is, you must not hold an
++ * active reference when calling kdbus_node_deactivate().
++ * By deactivating a node, it is immediately marked inactive. Then, we wait for
++ * all active references to be released (called 'draining' the node). This
++ * shouldn't take very long as we don't perform long-lasting operations while
++ * holding an active reference. Note that once the node is marked inactive, no
++ * new active references can be acquired.
++ * Once all active references are dropped, the node is considered 'drained'. Now
++ * kdbus_node_deactivate() is called on each child of the node before we
++ * continue deactvating our node. That is, once all children are entirely
++ * deactivated, we call ->release_cb() of our node. ->release_cb() can release
++ * any resources on that node which are bound to the "active" state of a node.
++ * When done, we unlink the node from its parent rb-tree, mark it as
++ * 'released' and return.
++ * If kdbus_node_deactivate() is called multiple times (even in parallel), all
++ * but one caller will just wait until the node is fully deactivated. That is,
++ * one random caller of kdbus_node_deactivate() is selected to call
++ * ->release_cb() and cleanup the node. Only once all this is done, all other
++ * callers will return from kdbus_node_deactivate(). That is, it doesn't matter
++ * whether you're the selected caller or not, it will only return after
++ * everything is fully done.
++ *
++ * When a node is activated, we acquire a normal object reference to the node.
++ * This reference is dropped after deactivation is fully done (and only iff the
++ * node really was activated). This allows callers to link+activate a child node
++ * and then drop all refs. The node will be deactivated together with the
++ * parent, and then be freed when this reference is dropped.
++ *
++ * Currently, nodes provide a bunch of resources that external code can use
++ * directly. This includes:
++ *
++ * * node->waitq: Each node has its own wait-queue that is used to manage
++ * the 'active' state. When a node is deactivated, we wait on
++ * this queue until all active refs are dropped. Analogously,
++ * when you release an active reference on a deactivated
++ * node, and the active ref-count drops to 0, we wake up a
++ * single thread on this queue. Furthermore, once the
++ * ->release_cb() callback finished, we wake up all waiters.
++ * The node-owner is free to re-use this wait-queue for other
++ * purposes. As node-management uses this queue only during
++ * deactivation, it is usually totally fine to re-use the
++ * queue for other, preferably low-overhead, use-cases.
++ *
++ * * node->type: This field defines the type of the owner of this node. It
++ * must be set during node initialization and must remain
++ * constant. The node management never looks at this value,
++ * but external users might use to gain access to the owner
++ * object of a node.
++ * It is totally up to the owner of the node to define what
++ * their type means. Usually it means you can access the
++ * parent structure via container_of(), as long as you hold an
++ * active reference to the node.
++ *
++ * * node->free_cb: callback after all references are dropped
++ * node->release_cb: callback during node deactivation
++ * These fields must be set by the node owner during
++ * node initialization. They must remain constant. If
++ * NULL, they're skipped.
++ *
++ * * node->mode: filesystem access modes
++ * node->uid: filesystem owner uid
++ * node->gid: filesystem owner gid
++ * These fields must be set by the node owner during node
++ * initialization. They must remain constant and may be
++ * accessed by other callers to properly initialize
++ * filesystem nodes.
++ *
++ * * node->id: This is an unsigned 32bit integer allocated by an IDR. It is
++ * always kept as small as possible during allocation and is
++ * globally unique across all nodes allocated by this module. 0
++ * is reserved as "not assigned" and is the default.
++ * The ID is assigned during kdbus_node_link() and is kept until
++ * the object is freed. Thus, the ID surpasses the active
++ * lifetime of a node. As long as you hold an object reference
++ * to a node (and the node was linked once), the ID is valid and
++ * unique.
++ *
++ * * node->name: name of this node
++ * node->hash: 31bit hash-value of @name (range [2..INT_MAX-1])
++ * These values follow the same lifetime rules as node->id.
++ * They're initialized when the node is linked and then remain
++ * constant until the last object reference is dropped.
++ * Unlike the id, the name is only unique across all siblings
++ * and only until the node is deactivated. Currently, the name
++ * is even unique if linked but not activated, yet. This might
++ * change in the future, though. Code should not rely on this.
++ *
++ * * node->lock: lock to protect node->children, node->rb, node->parent
++ * * node->parent: Reference to parent node. This is set during LINK time
++ * and is dropped during destruction. You must not access
++ * it unless you hold an active reference to the node or if
++ * you know the node is dead.
++ * * node->children: rb-tree of all linked children of this node. You must
++ * not access this directly, but use one of the iterator
++ * or lookup helpers.
++ */
++
++/*
++ * Bias values track states of "active references". They're all negative. If a
++ * node is active, its active-ref-counter is >=0 and tracks all active
++ * references. Once a node is deactivaed, we subtract NODE_BIAS. This means, the
++ * counter is now negative but still counts the active references. Once it drops
++ * to exactly NODE_BIAS, we know all active references were dropped. Exactly one
++ * thread will change it to NODE_RELEASE now, perform cleanup and then put it
++ * into NODE_DRAINED. Once drained, all other threads that tried deactivating
++ * the node will now be woken up (thus, they wait until the node is fully done).
++ * The initial state during node-setup is NODE_NEW. If a node is directly
++ * deactivated without having ever been active, it is put into
++ * NODE_RELEASE_DIRECT instead of NODE_BIAS. This tracks this one-bit state
++ * across node-deactivation. The task putting it into NODE_RELEASE now knows
++ * whether the node was active before or not.
++ *
++ * Some archs implement atomic_sub(v) with atomic_add(-v), so reserve INT_MIN
++ * to avoid overflows if multiplied by -1.
++ */
++#define KDBUS_NODE_BIAS (INT_MIN + 5)
++#define KDBUS_NODE_RELEASE_DIRECT (KDBUS_NODE_BIAS - 1)
++#define KDBUS_NODE_RELEASE (KDBUS_NODE_BIAS - 2)
++#define KDBUS_NODE_DRAINED (KDBUS_NODE_BIAS - 3)
++#define KDBUS_NODE_NEW (KDBUS_NODE_BIAS - 4)
++
++/* global unique ID mapping for kdbus nodes */
++static DEFINE_IDR(kdbus_node_idr);
++static DECLARE_RWSEM(kdbus_node_idr_lock);
++
++/**
++ * kdbus_node_name_hash() - hash a name
++ * @name: The string to hash
++ *
++ * This computes the hash of @name. It is guaranteed to be in the range
++ * [2..INT_MAX-1]. The values 1, 2 and INT_MAX are unused as they are reserved
++ * for the filesystem code.
++ *
++ * Return: hash value of the passed string
++ */
++static unsigned int kdbus_node_name_hash(const char *name)
++{
++ unsigned int hash;
++
++ /* reserve hash numbers 0, 1 and >=INT_MAX for magic directories */
++ hash = kdbus_strhash(name) & INT_MAX;
++ if (hash < 2)
++ hash += 2;
++ if (hash >= INT_MAX)
++ hash = INT_MAX - 1;
++
++ return hash;
++}
++
++/**
++ * kdbus_node_name_compare() - compare a name with a node's name
++ * @hash: hash of the string to compare the node with
++ * @name: name to compare the node with
++ * @node: node to compare the name with
++ *
++ * Return: 0 if @name and @hash exactly match the information in @node, or
++ * an integer less than or greater than zero if @name is found, respectively,
++ * to be less than or be greater than the string stored in @node.
++ */
++static int kdbus_node_name_compare(unsigned int hash, const char *name,
++ const struct kdbus_node *node)
++{
++ if (hash != node->hash)
++ return hash - node->hash;
++
++ return strcmp(name, node->name);
++}
++
++/**
++ * kdbus_node_init() - initialize a kdbus_node
++ * @node: Pointer to the node to initialize
++ * @type: The type the node will have (KDBUS_NODE_*)
++ *
++ * The caller is responsible of allocating @node and initializating it to zero.
++ * Once this call returns, you must use the node_ref() and node_unref()
++ * functions to manage this node.
++ */
++void kdbus_node_init(struct kdbus_node *node, unsigned int type)
++{
++ atomic_set(&node->refcnt, 1);
++ mutex_init(&node->lock);
++ node->id = 0;
++ node->type = type;
++ RB_CLEAR_NODE(&node->rb);
++ node->children = RB_ROOT;
++ init_waitqueue_head(&node->waitq);
++ atomic_set(&node->active, KDBUS_NODE_NEW);
++}
++
++/**
++ * kdbus_node_link() - link a node into the nodes system
++ * @node: Pointer to the node to initialize
++ * @parent: Pointer to a parent node, may be %NULL
++ * @name: The name of the node (or NULL if root node)
++ *
++ * This links a node into the hierarchy. This must not be called multiple times.
++ * If @parent is NULL, the node becomes a new root node.
++ *
++ * This call will fail if @name is not unique across all its siblings or if no
++ * ID could be allocated. You must not activate a node if linking failed! It is
++ * safe to deactivate it, though.
++ *
++ * Once you linked a node, you must call kdbus_node_deactivate() before you drop
++ * the last reference (even if you never activate the node).
++ *
++ * Return: 0 on success. negative error otherwise.
++ */
++int kdbus_node_link(struct kdbus_node *node, struct kdbus_node *parent,
++ const char *name)
++{
++ int ret;
++
++ if (WARN_ON(node->type != KDBUS_NODE_DOMAIN && !parent))
++ return -EINVAL;
++
++ if (WARN_ON(parent && !name))
++ return -EINVAL;
++
++ if (name) {
++ node->name = kstrdup(name, GFP_KERNEL);
++ if (!node->name)
++ return -ENOMEM;
++
++ node->hash = kdbus_node_name_hash(name);
++ }
++
++ down_write(&kdbus_node_idr_lock);
++ ret = idr_alloc(&kdbus_node_idr, node, 1, 0, GFP_KERNEL);
++ if (ret >= 0)
++ node->id = ret;
++ up_write(&kdbus_node_idr_lock);
++
++ if (ret < 0)
++ return ret;
++
++ ret = 0;
++
++ if (parent) {
++ struct rb_node **n, *prev;
++
++ if (!kdbus_node_acquire(parent))
++ return -ESHUTDOWN;
++
++ mutex_lock(&parent->lock);
++
++ n = &parent->children.rb_node;
++ prev = NULL;
++
++ while (*n) {
++ struct kdbus_node *pos;
++ int result;
++
++ pos = kdbus_node_from_rb(*n);
++ prev = *n;
++ result = kdbus_node_name_compare(node->hash,
++ node->name,
++ pos);
++ if (result == 0) {
++ ret = -EEXIST;
++ goto exit_unlock;
++ }
++
++ if (result < 0)
++ n = &pos->rb.rb_left;
++ else
++ n = &pos->rb.rb_right;
++ }
++
++ /* add new node and rebalance the tree */
++ rb_link_node(&node->rb, prev, n);
++ rb_insert_color(&node->rb, &parent->children);
++ node->parent = kdbus_node_ref(parent);
++
++exit_unlock:
++ mutex_unlock(&parent->lock);
++ kdbus_node_release(parent);
++ }
++
++ return ret;
++}
++
++/**
++ * kdbus_node_ref() - Acquire object reference
++ * @node: node to acquire reference to (or NULL)
++ *
++ * This acquires a new reference to @node. You must already own a reference when
++ * calling this!
++ * If @node is NULL, this is a no-op.
++ *
++ * Return: @node is returned
++ */
++struct kdbus_node *kdbus_node_ref(struct kdbus_node *node)
++{
++ if (node)
++ atomic_inc(&node->refcnt);
++ return node;
++}
++
++/**
++ * kdbus_node_unref() - Drop object reference
++ * @node: node to drop reference to (or NULL)
++ *
++ * This drops an object reference to @node. You must not access the node if you
++ * no longer own a reference.
++ * If the ref-count drops to 0, the object will be destroyed (->free_cb will be
++ * called).
++ *
++ * If you linked or activated the node, you must deactivate the node before you
++ * drop your last reference! If you didn't link or activate the node, you can
++ * drop any reference you want.
++ *
++ * Note that this calls into ->free_cb() and thus _might_ sleep. The ->free_cb()
++ * callbacks must not acquire any outer locks, though. So you can safely drop
++ * references while holding locks.
++ *
++ * If @node is NULL, this is a no-op.
++ *
++ * Return: This always returns NULL
++ */
++struct kdbus_node *kdbus_node_unref(struct kdbus_node *node)
++{
++ if (node && atomic_dec_and_test(&node->refcnt)) {
++ struct kdbus_node safe = *node;
++
++ WARN_ON(atomic_read(&node->active) != KDBUS_NODE_DRAINED);
++ WARN_ON(!RB_EMPTY_NODE(&node->rb));
++
++ if (node->free_cb)
++ node->free_cb(node);
++
++ down_write(&kdbus_node_idr_lock);
++ if (safe.id > 0)
++ idr_remove(&kdbus_node_idr, safe.id);
++ /* drop caches after last node to not leak memory on unload */
++ if (idr_is_empty(&kdbus_node_idr)) {
++ idr_destroy(&kdbus_node_idr);
++ idr_init(&kdbus_node_idr);
++ }
++ up_write(&kdbus_node_idr_lock);
++
++ kfree(safe.name);
++
++ /*
++ * kdbusfs relies on the parent to be available even after the
++ * node was deactivated and unlinked. Therefore, we pin it
++ * until a node is destroyed.
++ */
++ kdbus_node_unref(safe.parent);
++ }
++
++ return NULL;
++}
++
++/**
++ * kdbus_node_is_active() - test whether a node is active
++ * @node: node to test
++ *
++ * This checks whether @node is active. That means, @node was linked and
++ * activated by the node owner and hasn't been deactivated, yet. If, and only
++ * if, a node is active, kdbus_node_acquire() will be able to acquire active
++ * references.
++ *
++ * Note that this function does not give any lifetime guarantees. After this
++ * call returns, the node might be deactivated immediately. Normally, what you
++ * want is to acquire a real active reference via kdbus_node_acquire().
++ *
++ * Return: true if @node is active, false otherwise
++ */
++bool kdbus_node_is_active(struct kdbus_node *node)
++{
++ return atomic_read(&node->active) >= 0;
++}
++
++/**
++ * kdbus_node_is_deactivated() - test whether a node was already deactivated
++ * @node: node to test
++ *
++ * This checks whether kdbus_node_deactivate() was called on @node. Note that
++ * this might be true even if you never deactivated the node directly, but only
++ * one of its ancestors.
++ *
++ * Note that even if this returns 'false', the node might get deactivated
++ * immediately after the call returns.
++ *
++ * Return: true if @node was already deactivated, false if not
++ */
++bool kdbus_node_is_deactivated(struct kdbus_node *node)
++{
++ int v;
++
++ v = atomic_read(&node->active);
++ return v != KDBUS_NODE_NEW && v < 0;
++}
++
++/**
++ * kdbus_node_activate() - activate a node
++ * @node: node to activate
++ *
++ * This marks @node as active if, and only if, the node wasn't activated nor
++ * deactivated, yet, and the parent is still active. Any but the first call to
++ * kdbus_node_activate() is a no-op.
++ * If you called kdbus_node_deactivate() before, then even the first call to
++ * kdbus_node_activate() will be a no-op.
++ *
++ * This call doesn't give any lifetime guarantees. The node might get
++ * deactivated immediately after this call returns. Or the parent might already
++ * be deactivated, which will make this call a no-op.
++ *
++ * If this call successfully activated a node, it will take an object reference
++ * to it. This reference is dropped after the node is deactivated. Therefore,
++ * the object owner can safely drop their reference to @node iff they know that
++ * its parent node will get deactivated at some point. Once the parent node is
++ * deactivated, it will deactivate all its child and thus drop this reference
++ * again.
++ *
++ * Return: True if this call successfully activated the node, otherwise false.
++ * Note that this might return false, even if the node is still active
++ * (eg., if you called this a second time).
++ */
++bool kdbus_node_activate(struct kdbus_node *node)
++{
++ bool res = false;
++
++ mutex_lock(&node->lock);
++ if (atomic_read(&node->active) == KDBUS_NODE_NEW) {
++ atomic_sub(KDBUS_NODE_NEW, &node->active);
++ /* activated nodes have ref +1 */
++ kdbus_node_ref(node);
++ res = true;
++ }
++ mutex_unlock(&node->lock);
++
++ return res;
++}
++
++/**
++ * kdbus_node_deactivate() - deactivate a node
++ * @node: The node to deactivate.
++ *
++ * This function recursively deactivates this node and all its children. It
++ * returns only once all children and the node itself were recursively disabled
++ * (even if you call this function multiple times in parallel).
++ *
++ * It is safe to call this function on _any_ node that was initialized _any_
++ * number of times.
++ *
++ * This call may sleep, as it waits for all active references to be dropped.
++ */
++void kdbus_node_deactivate(struct kdbus_node *node)
++{
++ struct kdbus_node *pos, *child;
++ struct rb_node *rb;
++ int v_pre, v_post;
++
++ pos = node;
++
++ /*
++ * To avoid recursion, we perform back-tracking while deactivating
++ * nodes. For each node we enter, we first mark the active-counter as
++ * deactivated by adding BIAS. If the node as children, we set the first
++ * child as current position and start over. If the node has no
++ * children, we drain the node by waiting for all active refs to be
++ * dropped and then releasing the node.
++ *
++ * After the node is released, we set its parent as current position
++ * and start over. If the current position was the initial node, we're
++ * done.
++ *
++ * Note that this function can be called in parallel by multiple
++ * callers. We make sure that each node is only released once, and any
++ * racing caller will wait until the other thread fully released that
++ * node.
++ */
++
++ for (;;) {
++ /*
++ * Add BIAS to node->active to mark it as inactive. If it was
++ * never active before, immediately mark it as RELEASE_INACTIVE
++ * so we remember this state.
++ * We cannot remember v_pre as we might iterate into the
++ * children, overwriting v_pre, before we can release our node.
++ */
++ mutex_lock(&pos->lock);
++ v_pre = atomic_read(&pos->active);
++ if (v_pre >= 0)
++ atomic_add_return(KDBUS_NODE_BIAS, &pos->active);
++ else if (v_pre == KDBUS_NODE_NEW)
++ atomic_set(&pos->active, KDBUS_NODE_RELEASE_DIRECT);
++ mutex_unlock(&pos->lock);
++
++ /* wait until all active references were dropped */
++ wait_event(pos->waitq,
++ atomic_read(&pos->active) <= KDBUS_NODE_BIAS);
++
++ mutex_lock(&pos->lock);
++ /* recurse into first child if any */
++ rb = rb_first(&pos->children);
++ if (rb) {
++ child = kdbus_node_ref(kdbus_node_from_rb(rb));
++ mutex_unlock(&pos->lock);
++ pos = child;
++ continue;
++ }
++
++ /* mark object as RELEASE */
++ v_post = atomic_read(&pos->active);
++ if (v_post == KDBUS_NODE_BIAS ||
++ v_post == KDBUS_NODE_RELEASE_DIRECT)
++ atomic_set(&pos->active, KDBUS_NODE_RELEASE);
++ mutex_unlock(&pos->lock);
++
++ /*
++ * If this is the thread that marked the object as RELEASE, we
++ * perform the actual release. Otherwise, we wait until the
++ * release is done and the node is marked as DRAINED.
++ */
++ if (v_post == KDBUS_NODE_BIAS ||
++ v_post == KDBUS_NODE_RELEASE_DIRECT) {
++ if (pos->release_cb)
++ pos->release_cb(pos, v_post == KDBUS_NODE_BIAS);
++
++ if (pos->parent) {
++ mutex_lock(&pos->parent->lock);
++ if (!RB_EMPTY_NODE(&pos->rb)) {
++ rb_erase(&pos->rb,
++ &pos->parent->children);
++ RB_CLEAR_NODE(&pos->rb);
++ }
++ mutex_unlock(&pos->parent->lock);
++ }
++
++ /* mark as DRAINED */
++ atomic_set(&pos->active, KDBUS_NODE_DRAINED);
++ wake_up_all(&pos->waitq);
++
++ /* drop VFS cache */
++ kdbus_fs_flush(pos);
++
++ /*
++ * If the node was activated and somone subtracted BIAS
++ * from it to deactivate it, we, and only us, are
++ * responsible to release the extra ref-count that was
++ * taken once in kdbus_node_activate().
++ * If the node was never activated, no-one ever
++ * subtracted BIAS, but instead skipped that state and
++ * immediately went to NODE_RELEASE_DIRECT. In that case
++ * we must not drop the reference.
++ */
++ if (v_post == KDBUS_NODE_BIAS)
++ kdbus_node_unref(pos);
++ } else {
++ /* wait until object is DRAINED */
++ wait_event(pos->waitq,
++ atomic_read(&pos->active) == KDBUS_NODE_DRAINED);
++ }
++
++ /*
++ * We're done with the current node. Continue on its parent
++ * again, which will try deactivating its next child, or itself
++ * if no child is left.
++ * If we've reached our initial node again, we are done and
++ * can safely return.
++ */
++ if (pos == node)
++ break;
++
++ child = pos;
++ pos = pos->parent;
++ kdbus_node_unref(child);
++ }
++}
++
++/**
++ * kdbus_node_acquire() - Acquire an active ref on a node
++ * @node: The node
++ *
++ * This acquires an active-reference to @node. This will only succeed if the
++ * node is active. You must release this active reference via
++ * kdbus_node_release() again.
++ *
++ * See the introduction to "active references" for more details.
++ *
++ * Return: %true if @node was non-NULL and active
++ */
++bool kdbus_node_acquire(struct kdbus_node *node)
++{
++ return node && atomic_inc_unless_negative(&node->active);
++}
++
++/**
++ * kdbus_node_release() - Release an active ref on a node
++ * @node: The node
++ *
++ * This releases an active reference that was previously acquired via
++ * kdbus_node_acquire(). See kdbus_node_acquire() for details.
++ */
++void kdbus_node_release(struct kdbus_node *node)
++{
++ if (node && atomic_dec_return(&node->active) == KDBUS_NODE_BIAS)
++ wake_up(&node->waitq);
++}
++
++/**
++ * kdbus_node_find_child() - Find child by name
++ * @node: parent node to search through
++ * @name: name of child node
++ *
++ * This searches through all children of @node for a child-node with name @name.
++ * If not found, or if the child is deactivated, NULL is returned. Otherwise,
++ * the child is acquired and a new reference is returned.
++ *
++ * If you're done with the child, you need to release it and drop your
++ * reference.
++ *
++ * This function does not acquire the parent node. However, if the parent was
++ * already deactivated, then kdbus_node_deactivate() will, at some point, also
++ * deactivate the child. Therefore, we can rely on the explicit ordering during
++ * deactivation.
++ *
++ * Return: Reference to acquired child node, or NULL if not found / not active.
++ */
++struct kdbus_node *kdbus_node_find_child(struct kdbus_node *node,
++ const char *name)
++{
++ struct kdbus_node *child;
++ struct rb_node *rb;
++ unsigned int hash;
++ int ret;
++
++ hash = kdbus_node_name_hash(name);
++
++ mutex_lock(&node->lock);
++ rb = node->children.rb_node;
++ while (rb) {
++ child = kdbus_node_from_rb(rb);
++ ret = kdbus_node_name_compare(hash, name, child);
++ if (ret < 0)
++ rb = rb->rb_left;
++ else if (ret > 0)
++ rb = rb->rb_right;
++ else
++ break;
++ }
++ if (rb && kdbus_node_acquire(child))
++ kdbus_node_ref(child);
++ else
++ child = NULL;
++ mutex_unlock(&node->lock);
++
++ return child;
++}
++
++static struct kdbus_node *node_find_closest_unlocked(struct kdbus_node *node,
++ unsigned int hash,
++ const char *name)
++{
++ struct kdbus_node *n, *pos = NULL;
++ struct rb_node *rb;
++ int res;
++
++ /*
++ * Find the closest child with ``node->hash >= hash'', or, if @name is
++ * valid, ``node->name >= name'' (where '>=' is the lex. order).
++ */
++
++ rb = node->children.rb_node;
++ while (rb) {
++ n = kdbus_node_from_rb(rb);
++
++ if (name)
++ res = kdbus_node_name_compare(hash, name, n);
++ else
++ res = hash - n->hash;
++
++ if (res <= 0) {
++ rb = rb->rb_left;
++ pos = n;
++ } else { /* ``hash > n->hash'', ``name > n->name'' */
++ rb = rb->rb_right;
++ }
++ }
++
++ return pos;
++}
++
++/**
++ * kdbus_node_find_closest() - Find closest child-match
++ * @node: parent node to search through
++ * @hash: hash value to find closest match for
++ *
++ * Find the closest child of @node with a hash greater than or equal to @hash.
++ * The closest match is the left-most child of @node with this property. Which
++ * means, it is the first child with that hash returned by
++ * kdbus_node_next_child(), if you'd iterate the whole parent node.
++ *
++ * Return: Reference to acquired child, or NULL if none found.
++ */
++struct kdbus_node *kdbus_node_find_closest(struct kdbus_node *node,
++ unsigned int hash)
++{
++ struct kdbus_node *child;
++ struct rb_node *rb;
++
++ mutex_lock(&node->lock);
++
++ child = node_find_closest_unlocked(node, hash, NULL);
++ while (child && !kdbus_node_acquire(child)) {
++ rb = rb_next(&child->rb);
++ if (rb)
++ child = kdbus_node_from_rb(rb);
++ else
++ child = NULL;
++ }
++ kdbus_node_ref(child);
++
++ mutex_unlock(&node->lock);
++
++ return child;
++}
++
++/**
++ * kdbus_node_next_child() - Acquire next child
++ * @node: parent node
++ * @prev: previous child-node position or NULL
++ *
++ * This function returns a reference to the next active child of @node, after
++ * the passed position @prev. If @prev is NULL, a reference to the first active
++ * child is returned. If no more active children are found, NULL is returned.
++ *
++ * This function acquires the next child it returns. If you're done with the
++ * returned pointer, you need to release _and_ unref it.
++ *
++ * The passed in pointer @prev is not modified by this function, and it does
++ * *not* have to be active. If @prev was acquired via different means, or if it
++ * was unlinked from its parent before you pass it in, then this iterator will
++ * still return the next active child (it will have to search through the
++ * rb-tree based on the node-name, though).
++ * However, @prev must not be linked to a different parent than @node!
++ *
++ * Return: Reference to next acquired child, or NULL if at the end.
++ */
++struct kdbus_node *kdbus_node_next_child(struct kdbus_node *node,
++ struct kdbus_node *prev)
++{
++ struct kdbus_node *pos = NULL;
++ struct rb_node *rb;
++
++ mutex_lock(&node->lock);
++
++ if (!prev) {
++ /*
++ * New iteration; find first node in rb-tree and try to acquire
++ * it. If we got it, directly return it as first element.
++ * Otherwise, the loop below will find the next active node.
++ */
++ rb = rb_first(&node->children);
++ if (!rb)
++ goto exit;
++ pos = kdbus_node_from_rb(rb);
++ if (kdbus_node_acquire(pos))
++ goto exit;
++ } else if (RB_EMPTY_NODE(&prev->rb)) {
++ /*
++ * The current iterator is no longer linked to the rb-tree. Use
++ * its hash value and name to find the next _higher_ node and
++ * acquire it. If we got it, return it as next element.
++ * Otherwise, the loop below will find the next active node.
++ */
++ pos = node_find_closest_unlocked(node, prev->hash, prev->name);
++ if (!pos)
++ goto exit;
++ if (kdbus_node_acquire(pos))
++ goto exit;
++ } else {
++ /*
++ * The current iterator is still linked to the parent. Set it
++ * as current position and use the loop below to find the next
++ * active element.
++ */
++ pos = prev;
++ }
++
++ /* @pos was already returned or is inactive; find next active node */
++ do {
++ rb = rb_next(&pos->rb);
++ if (rb)
++ pos = kdbus_node_from_rb(rb);
++ else
++ pos = NULL;
++ } while (pos && !kdbus_node_acquire(pos));
++
++exit:
++ /* @pos is NULL or acquired. Take ref if non-NULL and return it */
++ kdbus_node_ref(pos);
++ mutex_unlock(&node->lock);
++ return pos;
++}
+diff --git a/ipc/kdbus/node.h b/ipc/kdbus/node.h
+new file mode 100644
+index 0000000..be125ce
+--- /dev/null
++++ b/ipc/kdbus/node.h
+@@ -0,0 +1,84 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_NODE_H
++#define __KDBUS_NODE_H
++
++#include <linux/atomic.h>
++#include <linux/kernel.h>
++#include <linux/mutex.h>
++#include <linux/wait.h>
++
++struct kdbus_node;
++
++enum kdbus_node_type {
++ KDBUS_NODE_DOMAIN,
++ KDBUS_NODE_CONTROL,
++ KDBUS_NODE_BUS,
++ KDBUS_NODE_ENDPOINT,
++};
++
++typedef void (*kdbus_node_free_t) (struct kdbus_node *node);
++typedef void (*kdbus_node_release_t) (struct kdbus_node *node, bool was_active);
++
++struct kdbus_node {
++ atomic_t refcnt;
++ atomic_t active;
++ wait_queue_head_t waitq;
++
++ /* static members */
++ unsigned int type;
++ kdbus_node_free_t free_cb;
++ kdbus_node_release_t release_cb;
++ umode_t mode;
++ kuid_t uid;
++ kgid_t gid;
++
++ /* valid once linked */
++ char *name;
++ unsigned int hash;
++ unsigned int id;
++ struct kdbus_node *parent; /* may be NULL */
++
++ /* valid iff active */
++ struct mutex lock;
++ struct rb_node rb;
++ struct rb_root children;
++};
++
++#define kdbus_node_from_rb(_node) rb_entry((_node), struct kdbus_node, rb)
++
++void kdbus_node_init(struct kdbus_node *node, unsigned int type);
++
++int kdbus_node_link(struct kdbus_node *node, struct kdbus_node *parent,
++ const char *name);
++
++struct kdbus_node *kdbus_node_ref(struct kdbus_node *node);
++struct kdbus_node *kdbus_node_unref(struct kdbus_node *node);
++
++bool kdbus_node_is_active(struct kdbus_node *node);
++bool kdbus_node_is_deactivated(struct kdbus_node *node);
++bool kdbus_node_activate(struct kdbus_node *node);
++void kdbus_node_deactivate(struct kdbus_node *node);
++
++bool kdbus_node_acquire(struct kdbus_node *node);
++void kdbus_node_release(struct kdbus_node *node);
++
++struct kdbus_node *kdbus_node_find_child(struct kdbus_node *node,
++ const char *name);
++struct kdbus_node *kdbus_node_find_closest(struct kdbus_node *node,
++ unsigned int hash);
++struct kdbus_node *kdbus_node_next_child(struct kdbus_node *node,
++ struct kdbus_node *prev);
++
++#endif
+diff --git a/ipc/kdbus/notify.c b/ipc/kdbus/notify.c
+new file mode 100644
+index 0000000..e4a4542
+--- /dev/null
++++ b/ipc/kdbus/notify.c
+@@ -0,0 +1,248 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/fs.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/spinlock.h>
++#include <linux/sched.h>
++#include <linux/slab.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "domain.h"
++#include "endpoint.h"
++#include "item.h"
++#include "message.h"
++#include "notify.h"
++
++static inline void kdbus_notify_add_tail(struct kdbus_kmsg *kmsg,
++ struct kdbus_bus *bus)
++{
++ spin_lock(&bus->notify_lock);
++ list_add_tail(&kmsg->notify_entry, &bus->notify_list);
++ spin_unlock(&bus->notify_lock);
++}
++
++static int kdbus_notify_reply(struct kdbus_bus *bus, u64 id,
++ u64 cookie, u64 msg_type)
++{
++ struct kdbus_kmsg *kmsg = NULL;
++
++ WARN_ON(id == 0);
++
++ kmsg = kdbus_kmsg_new(bus, 0);
++ if (IS_ERR(kmsg))
++ return PTR_ERR(kmsg);
++
++ /*
++ * a kernel-generated notification can only contain one
++ * struct kdbus_item, so make a shortcut here for
++ * faster lookup in the match db.
++ */
++ kmsg->notify_type = msg_type;
++ kmsg->msg.flags = KDBUS_MSG_SIGNAL;
++ kmsg->msg.dst_id = id;
++ kmsg->msg.src_id = KDBUS_SRC_ID_KERNEL;
++ kmsg->msg.payload_type = KDBUS_PAYLOAD_KERNEL;
++ kmsg->msg.cookie_reply = cookie;
++ kmsg->msg.items[0].type = msg_type;
++
++ kdbus_notify_add_tail(kmsg, bus);
++
++ return 0;
++}
++
++/**
++ * kdbus_notify_reply_timeout() - queue a timeout reply
++ * @bus: Bus which queues the messages
++ * @id: The destination's connection ID
++ * @cookie: The cookie to set in the reply.
++ *
++ * Queues a message that has a KDBUS_ITEM_REPLY_TIMEOUT item attached.
++ *
++ * Return: 0 on success, negative errno on failure.
++ */
++int kdbus_notify_reply_timeout(struct kdbus_bus *bus, u64 id, u64 cookie)
++{
++ return kdbus_notify_reply(bus, id, cookie, KDBUS_ITEM_REPLY_TIMEOUT);
++}
++
++/**
++ * kdbus_notify_reply_dead() - queue a 'dead' reply
++ * @bus: Bus which queues the messages
++ * @id: The destination's connection ID
++ * @cookie: The cookie to set in the reply.
++ *
++ * Queues a message that has a KDBUS_ITEM_REPLY_DEAD item attached.
++ *
++ * Return: 0 on success, negative errno on failure.
++ */
++int kdbus_notify_reply_dead(struct kdbus_bus *bus, u64 id, u64 cookie)
++{
++ return kdbus_notify_reply(bus, id, cookie, KDBUS_ITEM_REPLY_DEAD);
++}
++
++/**
++ * kdbus_notify_name_change() - queue a notification about a name owner change
++ * @bus: Bus which queues the messages
++ * @type: The type if the notification; KDBUS_ITEM_NAME_ADD,
++ * KDBUS_ITEM_NAME_CHANGE or KDBUS_ITEM_NAME_REMOVE
++ * @old_id: The id of the connection that used to own the name
++ * @new_id: The id of the new owner connection
++ * @old_flags: The flags to pass in the KDBUS_ITEM flags field for
++ * the old owner
++ * @new_flags: The flags to pass in the KDBUS_ITEM flags field for
++ * the new owner
++ * @name: The name that was removed or assigned to a new owner
++ *
++ * Return: 0 on success, negative errno on failure.
++ */
++int kdbus_notify_name_change(struct kdbus_bus *bus, u64 type,
++ u64 old_id, u64 new_id,
++ u64 old_flags, u64 new_flags,
++ const char *name)
++{
++ struct kdbus_kmsg *kmsg = NULL;
++ size_t name_len, extra_size;
++
++ name_len = strlen(name) + 1;
++ extra_size = sizeof(struct kdbus_notify_name_change) + name_len;
++ kmsg = kdbus_kmsg_new(bus, extra_size);
++ if (IS_ERR(kmsg))
++ return PTR_ERR(kmsg);
++
++ kmsg->msg.flags = KDBUS_MSG_SIGNAL;
++ kmsg->msg.dst_id = KDBUS_DST_ID_BROADCAST;
++ kmsg->msg.src_id = KDBUS_SRC_ID_KERNEL;
++ kmsg->msg.payload_type = KDBUS_PAYLOAD_KERNEL;
++ kmsg->notify_type = type;
++ kmsg->notify_old_id = old_id;
++ kmsg->notify_new_id = new_id;
++ kmsg->msg.items[0].type = type;
++ kmsg->msg.items[0].name_change.old_id.id = old_id;
++ kmsg->msg.items[0].name_change.old_id.flags = old_flags;
++ kmsg->msg.items[0].name_change.new_id.id = new_id;
++ kmsg->msg.items[0].name_change.new_id.flags = new_flags;
++ memcpy(kmsg->msg.items[0].name_change.name, name, name_len);
++ kmsg->notify_name = kmsg->msg.items[0].name_change.name;
++
++ kdbus_notify_add_tail(kmsg, bus);
++
++ return 0;
++}
++
++/**
++ * kdbus_notify_id_change() - queue a notification about a unique ID change
++ * @bus: Bus which queues the messages
++ * @type: The type if the notification; KDBUS_ITEM_ID_ADD or
++ * KDBUS_ITEM_ID_REMOVE
++ * @id: The id of the connection that was added or removed
++ * @flags: The flags to pass in the KDBUS_ITEM flags field
++ *
++ * Return: 0 on success, negative errno on failure.
++ */
++int kdbus_notify_id_change(struct kdbus_bus *bus, u64 type, u64 id, u64 flags)
++{
++ struct kdbus_kmsg *kmsg = NULL;
++
++ kmsg = kdbus_kmsg_new(bus, sizeof(struct kdbus_notify_id_change));
++ if (IS_ERR(kmsg))
++ return PTR_ERR(kmsg);
++
++ kmsg->msg.flags = KDBUS_MSG_SIGNAL;
++ kmsg->msg.dst_id = KDBUS_DST_ID_BROADCAST;
++ kmsg->msg.src_id = KDBUS_SRC_ID_KERNEL;
++ kmsg->msg.payload_type = KDBUS_PAYLOAD_KERNEL;
++ kmsg->notify_type = type;
++
++ switch (type) {
++ case KDBUS_ITEM_ID_ADD:
++ kmsg->notify_new_id = id;
++ break;
++
++ case KDBUS_ITEM_ID_REMOVE:
++ kmsg->notify_old_id = id;
++ break;
++
++ default:
++ BUG();
++ }
++
++ kmsg->msg.items[0].type = type;
++ kmsg->msg.items[0].id_change.id = id;
++ kmsg->msg.items[0].id_change.flags = flags;
++
++ kdbus_notify_add_tail(kmsg, bus);
++
++ return 0;
++}
++
++/**
++ * kdbus_notify_flush() - send a list of collected messages
++ * @bus: Bus which queues the messages
++ *
++ * The list is empty after sending the messages.
++ */
++void kdbus_notify_flush(struct kdbus_bus *bus)
++{
++ LIST_HEAD(notify_list);
++ struct kdbus_kmsg *kmsg, *tmp;
++
++ mutex_lock(&bus->notify_flush_lock);
++ down_read(&bus->name_registry->rwlock);
++
++ spin_lock(&bus->notify_lock);
++ list_splice_init(&bus->notify_list, ¬ify_list);
++ spin_unlock(&bus->notify_lock);
++
++ list_for_each_entry_safe(kmsg, tmp, ¬ify_list, notify_entry) {
++ kdbus_meta_conn_collect(kmsg->conn_meta, kmsg, NULL,
++ KDBUS_ATTACH_TIMESTAMP);
++
++ if (kmsg->msg.dst_id != KDBUS_DST_ID_BROADCAST) {
++ struct kdbus_conn *conn;
++
++ conn = kdbus_bus_find_conn_by_id(bus, kmsg->msg.dst_id);
++ if (conn) {
++ kdbus_bus_eavesdrop(bus, NULL, kmsg);
++ kdbus_conn_entry_insert(NULL, conn, kmsg, NULL);
++ kdbus_conn_unref(conn);
++ }
++ } else {
++ kdbus_bus_broadcast(bus, NULL, kmsg);
++ }
++
++ list_del(&kmsg->notify_entry);
++ kdbus_kmsg_free(kmsg);
++ }
++
++ up_read(&bus->name_registry->rwlock);
++ mutex_unlock(&bus->notify_flush_lock);
++}
++
++/**
++ * kdbus_notify_free() - free a list of collected messages
++ * @bus: Bus which queues the messages
++ */
++void kdbus_notify_free(struct kdbus_bus *bus)
++{
++ struct kdbus_kmsg *kmsg, *tmp;
++
++ list_for_each_entry_safe(kmsg, tmp, &bus->notify_list, notify_entry) {
++ list_del(&kmsg->notify_entry);
++ kdbus_kmsg_free(kmsg);
++ }
++}
+diff --git a/ipc/kdbus/notify.h b/ipc/kdbus/notify.h
+new file mode 100644
+index 0000000..03df464
+--- /dev/null
++++ b/ipc/kdbus/notify.h
+@@ -0,0 +1,30 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_NOTIFY_H
++#define __KDBUS_NOTIFY_H
++
++struct kdbus_bus;
++
++int kdbus_notify_id_change(struct kdbus_bus *bus, u64 type, u64 id, u64 flags);
++int kdbus_notify_reply_timeout(struct kdbus_bus *bus, u64 id, u64 cookie);
++int kdbus_notify_reply_dead(struct kdbus_bus *bus, u64 id, u64 cookie);
++int kdbus_notify_name_change(struct kdbus_bus *bus, u64 type,
++ u64 old_id, u64 new_id,
++ u64 old_flags, u64 new_flags,
++ const char *name);
++void kdbus_notify_flush(struct kdbus_bus *bus);
++void kdbus_notify_free(struct kdbus_bus *bus);
++
++#endif
+diff --git a/ipc/kdbus/policy.c b/ipc/kdbus/policy.c
+new file mode 100644
+index 0000000..dd7fffa
+--- /dev/null
++++ b/ipc/kdbus/policy.c
+@@ -0,0 +1,489 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/dcache.h>
++#include <linux/fs.h>
++#include <linux/init.h>
++#include <linux/mutex.h>
++#include <linux/sched.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "domain.h"
++#include "item.h"
++#include "names.h"
++#include "policy.h"
++
++#define KDBUS_POLICY_HASH_SIZE 64
++
++/**
++ * struct kdbus_policy_db_entry_access - a database entry access item
++ * @type: One of KDBUS_POLICY_ACCESS_* types
++ * @access: Access to grant. One of KDBUS_POLICY_*
++ * @uid: For KDBUS_POLICY_ACCESS_USER, the global uid
++ * @gid: For KDBUS_POLICY_ACCESS_GROUP, the global gid
++ * @list: List entry item for the entry's list
++ *
++ * This is the internal version of struct kdbus_policy_db_access.
++ */
++struct kdbus_policy_db_entry_access {
++ u8 type; /* USER, GROUP, WORLD */
++ u8 access; /* OWN, TALK, SEE */
++ union {
++ kuid_t uid; /* global uid */
++ kgid_t gid; /* global gid */
++ };
++ struct list_head list;
++};
++
++/**
++ * struct kdbus_policy_db_entry - a policy database entry
++ * @name: The name to match the policy entry against
++ * @hentry: The hash entry for the database's entries_hash
++ * @access_list: List head for keeping tracks of the entry's
++ * access items.
++ * @owner: The owner of this entry. Can be a kdbus_conn or
++ * a kdbus_ep object.
++ * @wildcard: The name is a wildcard, such as ending on '.*'
++ */
++struct kdbus_policy_db_entry {
++ char *name;
++ struct hlist_node hentry;
++ struct list_head access_list;
++ const void *owner;
++ bool wildcard:1;
++};
++
++static void kdbus_policy_entry_free(struct kdbus_policy_db_entry *e)
++{
++ struct kdbus_policy_db_entry_access *a, *tmp;
++
++ list_for_each_entry_safe(a, tmp, &e->access_list, list) {
++ list_del(&a->list);
++ kfree(a);
++ }
++
++ kfree(e->name);
++ kfree(e);
++}
++
++static unsigned int kdbus_strnhash(const char *str, size_t len)
++{
++ unsigned long hash = init_name_hash();
++
++ while (len--)
++ hash = partial_name_hash(*str++, hash);
++
++ return end_name_hash(hash);
++}
++
++static const struct kdbus_policy_db_entry *
++kdbus_policy_lookup(struct kdbus_policy_db *db, const char *name, u32 hash)
++{
++ struct kdbus_policy_db_entry *e;
++ const char *dot;
++ size_t len;
++
++ /* find exact match */
++ hash_for_each_possible(db->entries_hash, e, hentry, hash)
++ if (strcmp(e->name, name) == 0 && !e->wildcard)
++ return e;
++
++ /* find wildcard match */
++
++ dot = strrchr(name, '.');
++ if (!dot)
++ return NULL;
++
++ len = dot - name;
++ hash = kdbus_strnhash(name, len);
++
++ hash_for_each_possible(db->entries_hash, e, hentry, hash)
++ if (e->wildcard && !strncmp(e->name, name, len) &&
++ !e->name[len])
++ return e;
++
++ return NULL;
++}
++
++/**
++ * kdbus_policy_db_clear - release all memory from a policy db
++ * @db: The policy database
++ */
++void kdbus_policy_db_clear(struct kdbus_policy_db *db)
++{
++ struct kdbus_policy_db_entry *e;
++ struct hlist_node *tmp;
++ unsigned int i;
++
++ /* purge entries */
++ down_write(&db->entries_rwlock);
++ hash_for_each_safe(db->entries_hash, i, tmp, e, hentry) {
++ hash_del(&e->hentry);
++ kdbus_policy_entry_free(e);
++ }
++ up_write(&db->entries_rwlock);
++}
++
++/**
++ * kdbus_policy_db_init() - initialize a new policy database
++ * @db: The location of the database
++ *
++ * This initializes a new policy-db. The underlying memory must have been
++ * cleared to zero by the caller.
++ */
++void kdbus_policy_db_init(struct kdbus_policy_db *db)
++{
++ hash_init(db->entries_hash);
++ init_rwsem(&db->entries_rwlock);
++}
++
++/**
++ * kdbus_policy_query_unlocked() - Query the policy database
++ * @db: Policy database
++ * @cred: Credentials to test against
++ * @name: Name to query
++ * @hash: Hash value of @name
++ *
++ * Same as kdbus_policy_query() but requires the caller to lock the policy
++ * database against concurrent writes.
++ *
++ * Return: The highest KDBUS_POLICY_* access type found, or -EPERM if none.
++ */
++int kdbus_policy_query_unlocked(struct kdbus_policy_db *db,
++ const struct cred *cred, const char *name,
++ unsigned int hash)
++{
++ struct kdbus_policy_db_entry_access *a;
++ const struct kdbus_policy_db_entry *e;
++ int i, highest = -EPERM;
++
++ e = kdbus_policy_lookup(db, name, hash);
++ if (!e)
++ return -EPERM;
++
++ list_for_each_entry(a, &e->access_list, list) {
++ if ((int)a->access <= highest)
++ continue;
++
++ switch (a->type) {
++ case KDBUS_POLICY_ACCESS_USER:
++ if (uid_eq(cred->euid, a->uid))
++ highest = a->access;
++ break;
++ case KDBUS_POLICY_ACCESS_GROUP:
++ if (gid_eq(cred->egid, a->gid)) {
++ highest = a->access;
++ break;
++ }
++
++ for (i = 0; i < cred->group_info->ngroups; i++) {
++ kgid_t gid = GROUP_AT(cred->group_info, i);
++
++ if (gid_eq(gid, a->gid)) {
++ highest = a->access;
++ break;
++ }
++ }
++
++ break;
++ case KDBUS_POLICY_ACCESS_WORLD:
++ highest = a->access;
++ break;
++ }
++
++ /* OWN is the highest possible policy */
++ if (highest >= KDBUS_POLICY_OWN)
++ break;
++ }
++
++ return highest;
++}
++
++/**
++ * kdbus_policy_query() - Query the policy database
++ * @db: Policy database
++ * @cred: Credentials to test against
++ * @name: Name to query
++ * @hash: Hash value of @name
++ *
++ * Query the policy database @db for the access rights of @cred to the name
++ * @name. The access rights of @cred are returned, or -EPERM if no access is
++ * granted.
++ *
++ * This call effectively searches for the highest access-right granted to
++ * @cred. The caller should really cache those as policy lookups are rather
++ * expensive.
++ *
++ * Return: The highest KDBUS_POLICY_* access type found, or -EPERM if none.
++ */
++int kdbus_policy_query(struct kdbus_policy_db *db, const struct cred *cred,
++ const char *name, unsigned int hash)
++{
++ int ret;
++
++ down_read(&db->entries_rwlock);
++ ret = kdbus_policy_query_unlocked(db, cred, name, hash);
++ up_read(&db->entries_rwlock);
++
++ return ret;
++}
++
++static void __kdbus_policy_remove_owner(struct kdbus_policy_db *db,
++ const void *owner)
++{
++ struct kdbus_policy_db_entry *e;
++ struct hlist_node *tmp;
++ int i;
++
++ hash_for_each_safe(db->entries_hash, i, tmp, e, hentry)
++ if (e->owner == owner) {
++ hash_del(&e->hentry);
++ kdbus_policy_entry_free(e);
++ }
++}
++
++/**
++ * kdbus_policy_remove_owner() - remove all entries related to a connection
++ * @db: The policy database
++ * @owner: The connection which items to remove
++ */
++void kdbus_policy_remove_owner(struct kdbus_policy_db *db,
++ const void *owner)
++{
++ down_write(&db->entries_rwlock);
++ __kdbus_policy_remove_owner(db, owner);
++ up_write(&db->entries_rwlock);
++}
++
++/*
++ * Convert user provided policy access to internal kdbus policy
++ * access
++ */
++static struct kdbus_policy_db_entry_access *
++kdbus_policy_make_access(const struct kdbus_policy_access *uaccess)
++{
++ int ret;
++ struct kdbus_policy_db_entry_access *a;
++
++ a = kzalloc(sizeof(*a), GFP_KERNEL);
++ if (!a)
++ return ERR_PTR(-ENOMEM);
++
++ ret = -EINVAL;
++ switch (uaccess->access) {
++ case KDBUS_POLICY_SEE:
++ case KDBUS_POLICY_TALK:
++ case KDBUS_POLICY_OWN:
++ a->access = uaccess->access;
++ break;
++ default:
++ goto err;
++ }
++
++ switch (uaccess->type) {
++ case KDBUS_POLICY_ACCESS_USER:
++ a->uid = make_kuid(current_user_ns(), uaccess->id);
++ if (!uid_valid(a->uid))
++ goto err;
++
++ break;
++ case KDBUS_POLICY_ACCESS_GROUP:
++ a->gid = make_kgid(current_user_ns(), uaccess->id);
++ if (!gid_valid(a->gid))
++ goto err;
++
++ break;
++ case KDBUS_POLICY_ACCESS_WORLD:
++ break;
++ default:
++ goto err;
++ }
++
++ a->type = uaccess->type;
++
++ return a;
++
++err:
++ kfree(a);
++ return ERR_PTR(ret);
++}
++
++/**
++ * kdbus_policy_set() - set a connection's policy rules
++ * @db: The policy database
++ * @items: A list of kdbus_item elements that contain both
++ * names and access rules to set.
++ * @items_size: The total size of the items.
++ * @max_policies: The maximum number of policy entries to allow.
++ * Pass 0 for no limit.
++ * @allow_wildcards: Boolean value whether wildcard entries (such
++ * ending on '.*') should be allowed.
++ * @owner: The owner of the new policy items.
++ *
++ * This function sets a new set of policies for a given owner. The names and
++ * access rules are gathered by walking the list of items passed in as
++ * argument. An item of type KDBUS_ITEM_NAME is expected before any number of
++ * KDBUS_ITEM_POLICY_ACCESS items. If there are more repetitions of this
++ * pattern than denoted in @max_policies, -EINVAL is returned.
++ *
++ * In order to allow atomic replacement of rules, the function first removes
++ * all entries that have been created for the given owner previously.
++ *
++ * Callers to this function must make sur that the owner is a custom
++ * endpoint, or if the endpoint is a default endpoint, then it must be
++ * either a policy holder or an activator.
++ *
++ * Return: 0 on success, negative errno on failure.
++ */
++int kdbus_policy_set(struct kdbus_policy_db *db,
++ const struct kdbus_item *items,
++ size_t items_size,
++ size_t max_policies,
++ bool allow_wildcards,
++ const void *owner)
++{
++ struct kdbus_policy_db_entry_access *a;
++ struct kdbus_policy_db_entry *e, *p;
++ const struct kdbus_item *item;
++ struct hlist_node *tmp;
++ HLIST_HEAD(entries);
++ HLIST_HEAD(restore);
++ size_t count = 0;
++ int i, ret = 0;
++ u32 hash;
++
++ /* Walk the list of items and look for new policies */
++ e = NULL;
++ KDBUS_ITEMS_FOREACH(item, items, items_size) {
++ switch (item->type) {
++ case KDBUS_ITEM_NAME: {
++ size_t len;
++
++ if (max_policies && ++count > max_policies) {
++ ret = -E2BIG;
++ goto exit;
++ }
++
++ if (!kdbus_name_is_valid(item->str, true)) {
++ ret = -EINVAL;
++ goto exit;
++ }
++
++ e = kzalloc(sizeof(*e), GFP_KERNEL);
++ if (!e) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ INIT_LIST_HEAD(&e->access_list);
++ e->owner = owner;
++ hlist_add_head(&e->hentry, &entries);
++
++ e->name = kstrdup(item->str, GFP_KERNEL);
++ if (!e->name) {
++ ret = -ENOMEM;
++ goto exit;
++ }
++
++ /*
++ * If a supplied name ends with an '.*', cut off that
++ * part, only store anything before it, and mark the
++ * entry as wildcard.
++ */
++ len = strlen(e->name);
++ if (len > 2 &&
++ e->name[len - 3] == '.' &&
++ e->name[len - 2] == '*') {
++ if (!allow_wildcards) {
++ ret = -EINVAL;
++ goto exit;
++ }
++
++ e->name[len - 3] = '\0';
++ e->wildcard = true;
++ }
++
++ break;
++ }
++
++ case KDBUS_ITEM_POLICY_ACCESS:
++ if (!e) {
++ ret = -EINVAL;
++ goto exit;
++ }
++
++ a = kdbus_policy_make_access(&item->policy_access);
++ if (IS_ERR(a)) {
++ ret = PTR_ERR(a);
++ goto exit;
++ }
++
++ list_add_tail(&a->list, &e->access_list);
++ break;
++ }
++ }
++
++ down_write(&db->entries_rwlock);
++
++ /* remember previous entries to restore in case of failure */
++ hash_for_each_safe(db->entries_hash, i, tmp, e, hentry)
++ if (e->owner == owner) {
++ hash_del(&e->hentry);
++ hlist_add_head(&e->hentry, &restore);
++ }
++
++ hlist_for_each_entry_safe(e, tmp, &entries, hentry) {
++ /* prevent duplicates */
++ hash = kdbus_strhash(e->name);
++ hash_for_each_possible(db->entries_hash, p, hentry, hash)
++ if (strcmp(e->name, p->name) == 0 &&
++ e->wildcard == p->wildcard) {
++ ret = -EEXIST;
++ goto restore;
++ }
++
++ hlist_del(&e->hentry);
++ hash_add(db->entries_hash, &e->hentry, hash);
++ }
++
++restore:
++ /* if we failed, flush all entries we added so far */
++ if (ret < 0)
++ __kdbus_policy_remove_owner(db, owner);
++
++ /* if we failed, restore entries, otherwise release them */
++ hlist_for_each_entry_safe(e, tmp, &restore, hentry) {
++ hlist_del(&e->hentry);
++ if (ret < 0) {
++ hash = kdbus_strhash(e->name);
++ hash_add(db->entries_hash, &e->hentry, hash);
++ } else {
++ kdbus_policy_entry_free(e);
++ }
++ }
++
++ up_write(&db->entries_rwlock);
++
++exit:
++ hlist_for_each_entry_safe(e, tmp, &entries, hentry) {
++ hlist_del(&e->hentry);
++ kdbus_policy_entry_free(e);
++ }
++
++ return ret;
++}
+diff --git a/ipc/kdbus/policy.h b/ipc/kdbus/policy.h
+new file mode 100644
+index 0000000..15dd7bc
+--- /dev/null
++++ b/ipc/kdbus/policy.h
+@@ -0,0 +1,51 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_POLICY_H
++#define __KDBUS_POLICY_H
++
++#include <linux/hashtable.h>
++#include <linux/rwsem.h>
++
++struct kdbus_conn;
++struct kdbus_item;
++
++/**
++ * struct kdbus_policy_db - policy database
++ * @entries_hash: Hashtable of entries
++ * @entries_rwlock: Mutex to protect the database's access entries
++ */
++struct kdbus_policy_db {
++ DECLARE_HASHTABLE(entries_hash, 6);
++ struct rw_semaphore entries_rwlock;
++};
++
++void kdbus_policy_db_init(struct kdbus_policy_db *db);
++void kdbus_policy_db_clear(struct kdbus_policy_db *db);
++
++int kdbus_policy_query_unlocked(struct kdbus_policy_db *db,
++ const struct cred *cred, const char *name,
++ unsigned int hash);
++int kdbus_policy_query(struct kdbus_policy_db *db, const struct cred *cred,
++ const char *name, unsigned int hash);
++
++void kdbus_policy_remove_owner(struct kdbus_policy_db *db,
++ const void *owner);
++int kdbus_policy_set(struct kdbus_policy_db *db,
++ const struct kdbus_item *items,
++ size_t items_size,
++ size_t max_policies,
++ bool allow_wildcards,
++ const void *owner);
++
++#endif
+diff --git a/ipc/kdbus/pool.c b/ipc/kdbus/pool.c
+new file mode 100644
+index 0000000..139bb77
+--- /dev/null
++++ b/ipc/kdbus/pool.c
+@@ -0,0 +1,728 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/aio.h>
++#include <linux/file.h>
++#include <linux/fs.h>
++#include <linux/highmem.h>
++#include <linux/init.h>
++#include <linux/mm.h>
++#include <linux/module.h>
++#include <linux/pagemap.h>
++#include <linux/rbtree.h>
++#include <linux/sched.h>
++#include <linux/shmem_fs.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/uio.h>
++
++#include "pool.h"
++#include "util.h"
++
++/**
++ * struct kdbus_pool - the receiver's buffer
++ * @f: The backing shmem file
++ * @size: The size of the file
++ * @accounted_size: Currently accounted memory in bytes
++ * @lock: Pool data lock
++ * @slices: All slices sorted by address
++ * @slices_busy: Tree of allocated slices
++ * @slices_free: Tree of free slices
++ *
++ * The receiver's buffer, managed as a pool of allocated and free
++ * slices containing the queued messages.
++ *
++ * Messages sent with KDBUS_CMD_SEND are copied direcly by the
++ * sending process into the receiver's pool.
++ *
++ * Messages received with KDBUS_CMD_RECV just return the offset
++ * to the data placed in the pool.
++ *
++ * The internally allocated memory needs to be returned by the receiver
++ * with KDBUS_CMD_FREE.
++ */
++struct kdbus_pool {
++ struct file *f;
++ size_t size;
++ size_t accounted_size;
++ struct mutex lock;
++
++ struct list_head slices;
++ struct rb_root slices_busy;
++ struct rb_root slices_free;
++};
++
++/**
++ * struct kdbus_pool_slice - allocated element in kdbus_pool
++ * @pool: Pool this slice belongs to
++ * @off: Offset of slice in the shmem file
++ * @size: Size of slice
++ * @entry: Entry in "all slices" list
++ * @rb_node: Entry in free or busy list
++ * @free: Unused slice
++ * @accounted: Accounted as queue slice
++ * @ref_kernel: Kernel holds a reference
++ * @ref_user: Userspace holds a reference
++ *
++ * The pool has one or more slices, always spanning the entire size of the
++ * pool.
++ *
++ * Every slice is an element in a list sorted by the buffer address, to
++ * provide access to the next neighbor slice.
++ *
++ * Every slice is member in either the busy or the free tree. The free
++ * tree is organized by slice size, the busy tree organized by buffer
++ * offset.
++ */
++struct kdbus_pool_slice {
++ struct kdbus_pool *pool;
++ size_t off;
++ size_t size;
++
++ struct list_head entry;
++ struct rb_node rb_node;
++
++ bool free:1;
++ bool accounted:1;
++ bool ref_kernel:1;
++ bool ref_user:1;
++};
++
++static struct kdbus_pool_slice *kdbus_pool_slice_new(struct kdbus_pool *pool,
++ size_t off, size_t size)
++{
++ struct kdbus_pool_slice *slice;
++
++ slice = kzalloc(sizeof(*slice), GFP_KERNEL);
++ if (!slice)
++ return NULL;
++
++ slice->pool = pool;
++ slice->off = off;
++ slice->size = size;
++ slice->free = true;
++ return slice;
++}
++
++/* insert a slice into the free tree */
++static void kdbus_pool_add_free_slice(struct kdbus_pool *pool,
++ struct kdbus_pool_slice *slice)
++{
++ struct rb_node **n;
++ struct rb_node *pn = NULL;
++
++ n = &pool->slices_free.rb_node;
++ while (*n) {
++ struct kdbus_pool_slice *pslice;
++
++ pn = *n;
++ pslice = rb_entry(pn, struct kdbus_pool_slice, rb_node);
++ if (slice->size < pslice->size)
++ n = &pn->rb_left;
++ else
++ n = &pn->rb_right;
++ }
++
++ rb_link_node(&slice->rb_node, pn, n);
++ rb_insert_color(&slice->rb_node, &pool->slices_free);
++}
++
++/* insert a slice into the busy tree */
++static void kdbus_pool_add_busy_slice(struct kdbus_pool *pool,
++ struct kdbus_pool_slice *slice)
++{
++ struct rb_node **n;
++ struct rb_node *pn = NULL;
++
++ n = &pool->slices_busy.rb_node;
++ while (*n) {
++ struct kdbus_pool_slice *pslice;
++
++ pn = *n;
++ pslice = rb_entry(pn, struct kdbus_pool_slice, rb_node);
++ if (slice->off < pslice->off)
++ n = &pn->rb_left;
++ else if (slice->off > pslice->off)
++ n = &pn->rb_right;
++ else
++ BUG();
++ }
++
++ rb_link_node(&slice->rb_node, pn, n);
++ rb_insert_color(&slice->rb_node, &pool->slices_busy);
++}
++
++static struct kdbus_pool_slice *kdbus_pool_find_slice(struct kdbus_pool *pool,
++ size_t off)
++{
++ struct rb_node *n;
++
++ n = pool->slices_busy.rb_node;
++ while (n) {
++ struct kdbus_pool_slice *s;
++
++ s = rb_entry(n, struct kdbus_pool_slice, rb_node);
++ if (off < s->off)
++ n = n->rb_left;
++ else if (off > s->off)
++ n = n->rb_right;
++ else
++ return s;
++ }
++
++ return NULL;
++}
++
++/**
++ * kdbus_pool_slice_alloc() - allocate memory from a pool
++ * @pool: The receiver's pool
++ * @size: The number of bytes to allocate
++ * @accounted: Whether this slice should be accounted for
++ *
++ * The returned slice is used for kdbus_pool_slice_release() to
++ * free the allocated memory. If either @kvec or @iovec is non-NULL, the data
++ * will be copied from kernel or userspace memory into the new slice at
++ * offset 0.
++ *
++ * Return: the allocated slice on success, ERR_PTR on failure.
++ */
++struct kdbus_pool_slice *kdbus_pool_slice_alloc(struct kdbus_pool *pool,
++ size_t size, bool accounted)
++{
++ size_t slice_size = KDBUS_ALIGN8(size);
++ struct rb_node *n, *found = NULL;
++ struct kdbus_pool_slice *s;
++ int ret = 0;
++
++ if (WARN_ON(!size))
++ return ERR_PTR(-EINVAL);
++
++ /* search a free slice with the closest matching size */
++ mutex_lock(&pool->lock);
++ n = pool->slices_free.rb_node;
++ while (n) {
++ s = rb_entry(n, struct kdbus_pool_slice, rb_node);
++ if (slice_size < s->size) {
++ found = n;
++ n = n->rb_left;
++ } else if (slice_size > s->size) {
++ n = n->rb_right;
++ } else {
++ found = n;
++ break;
++ }
++ }
++
++ /* no slice with the minimum size found in the pool */
++ if (!found) {
++ ret = -EXFULL;
++ goto exit_unlock;
++ }
++
++ /* no exact match, use the closest one */
++ if (!n) {
++ struct kdbus_pool_slice *s_new;
++
++ s = rb_entry(found, struct kdbus_pool_slice, rb_node);
++
++ /* split-off the remainder of the size to its own slice */
++ s_new = kdbus_pool_slice_new(pool, s->off + slice_size,
++ s->size - slice_size);
++ if (!s_new) {
++ ret = -ENOMEM;
++ goto exit_unlock;
++ }
++
++ list_add(&s_new->entry, &s->entry);
++ kdbus_pool_add_free_slice(pool, s_new);
++
++ /* adjust our size now that we split-off another slice */
++ s->size = slice_size;
++ }
++
++ /* move slice from free to the busy tree */
++ rb_erase(found, &pool->slices_free);
++ kdbus_pool_add_busy_slice(pool, s);
++
++ WARN_ON(s->ref_kernel || s->ref_user);
++
++ s->ref_kernel = true;
++ s->free = false;
++ s->accounted = accounted;
++ if (accounted)
++ pool->accounted_size += s->size;
++ mutex_unlock(&pool->lock);
++
++ return s;
++
++exit_unlock:
++ mutex_unlock(&pool->lock);
++ return ERR_PTR(ret);
++}
++
++static void __kdbus_pool_slice_release(struct kdbus_pool_slice *slice)
++{
++ struct kdbus_pool *pool = slice->pool;
++
++ /* don't free the slice if either has a reference */
++ if (slice->ref_kernel || slice->ref_user)
++ return;
++
++ if (WARN_ON(slice->free))
++ return;
++
++ rb_erase(&slice->rb_node, &pool->slices_busy);
++
++ /* merge with the next free slice */
++ if (!list_is_last(&slice->entry, &pool->slices)) {
++ struct kdbus_pool_slice *s;
++
++ s = list_entry(slice->entry.next,
++ struct kdbus_pool_slice, entry);
++ if (s->free) {
++ rb_erase(&s->rb_node, &pool->slices_free);
++ list_del(&s->entry);
++ slice->size += s->size;
++ kfree(s);
++ }
++ }
++
++ /* merge with previous free slice */
++ if (pool->slices.next != &slice->entry) {
++ struct kdbus_pool_slice *s;
++
++ s = list_entry(slice->entry.prev,
++ struct kdbus_pool_slice, entry);
++ if (s->free) {
++ rb_erase(&s->rb_node, &pool->slices_free);
++ list_del(&slice->entry);
++ s->size += slice->size;
++ kfree(slice);
++ slice = s;
++ }
++ }
++
++ slice->free = true;
++ kdbus_pool_add_free_slice(pool, slice);
++}
++
++/**
++ * kdbus_pool_slice_release() - drop kernel-reference on allocated slice
++ * @slice: Slice allocated from the pool
++ *
++ * This releases the kernel-reference on the given slice. If the
++ * kernel-reference and the user-reference on a slice are dropped, the slice is
++ * returned to the pool.
++ *
++ * So far, we do not implement full ref-counting on slices. Each, kernel and
++ * user-space can have exactly one reference to a slice. If both are dropped at
++ * the same time, the slice is released.
++ */
++void kdbus_pool_slice_release(struct kdbus_pool_slice *slice)
++{
++ struct kdbus_pool *pool;
++
++ if (!slice)
++ return;
++
++ /* @slice may be freed, so keep local ptr to @pool */
++ pool = slice->pool;
++
++ mutex_lock(&pool->lock);
++ /* kernel must own a ref to @slice to drop it */
++ WARN_ON(!slice->ref_kernel);
++ slice->ref_kernel = false;
++ /* no longer kernel-owned, de-account slice */
++ if (slice->accounted && !WARN_ON(pool->accounted_size < slice->size))
++ pool->accounted_size -= slice->size;
++ __kdbus_pool_slice_release(slice);
++ mutex_unlock(&pool->lock);
++}
++
++/**
++ * kdbus_pool_release_offset() - release a public offset
++ * @pool: pool to operate on
++ * @off: offset to release
++ *
++ * This should be called whenever user-space frees a slice given to them. It
++ * verifies the slice is available and public, and then drops it. It ensures
++ * correct locking and barriers against queues.
++ *
++ * Return: 0 on success, ENXIO if the offset is invalid or not public.
++ */
++int kdbus_pool_release_offset(struct kdbus_pool *pool, size_t off)
++{
++ struct kdbus_pool_slice *slice;
++ int ret = 0;
++
++ /* 'pool->size' is used as dummy offset for empty slices */
++ if (off == pool->size)
++ return 0;
++
++ mutex_lock(&pool->lock);
++ slice = kdbus_pool_find_slice(pool, off);
++ if (slice && slice->ref_user) {
++ slice->ref_user = false;
++ __kdbus_pool_slice_release(slice);
++ } else {
++ ret = -ENXIO;
++ }
++ mutex_unlock(&pool->lock);
++
++ return ret;
++}
++
++/**
++ * kdbus_pool_publish_empty() - publish empty slice to user-space
++ * @pool: pool to operate on
++ * @off: output storage for offset, or NULL
++ * @size: output storage for size, or NULL
++ *
++ * This is the same as kdbus_pool_slice_publish(), but uses a dummy slice with
++ * size 0. The returned offset points to the end of the pool and is never
++ * returned on real slices.
++ */
++void kdbus_pool_publish_empty(struct kdbus_pool *pool, u64 *off, u64 *size)
++{
++ if (off)
++ *off = pool->size;
++ if (size)
++ *size = 0;
++}
++
++/**
++ * kdbus_pool_slice_publish() - publish slice to user-space
++ * @slice: The slice
++ * @out_offset: Output storage for offset, or NULL
++ * @out_size: Output storage for size, or NULL
++ *
++ * This prepares a slice to be published to user-space.
++ *
++ * This call combines the following operations:
++ * * the memory region is flushed so the user's memory view is consistent
++ * * the slice is marked as referenced by user-space, so user-space has to
++ * call KDBUS_CMD_FREE to release it
++ * * the offset and size of the slice are written to the given output
++ * arguments, if non-NULL
++ */
++void kdbus_pool_slice_publish(struct kdbus_pool_slice *slice,
++ u64 *out_offset, u64 *out_size)
++{
++ mutex_lock(&slice->pool->lock);
++ /* kernel must own a ref to @slice to gain a user-space ref */
++ WARN_ON(!slice->ref_kernel);
++ slice->ref_user = true;
++ mutex_unlock(&slice->pool->lock);
++
++ if (out_offset)
++ *out_offset = slice->off;
++ if (out_size)
++ *out_size = slice->size;
++}
++
++/**
++ * kdbus_pool_slice_offset() - Get a slice's offset inside the pool
++ * @slice: Slice to return the offset of
++ *
++ * Return: The internal offset @slice inside the pool.
++ */
++off_t kdbus_pool_slice_offset(const struct kdbus_pool_slice *slice)
++{
++ return slice->off;
++}
++
++/**
++ * kdbus_pool_slice_size() - get size of a pool slice
++ * @slice: slice to query
++ *
++ * Return: size of the given slice
++ */
++size_t kdbus_pool_slice_size(const struct kdbus_pool_slice *slice)
++{
++ return slice->size;
++}
++
++/**
++ * kdbus_pool_new() - create a new pool
++ * @name: Name of the (deleted) file which shows up in
++ * /proc, used for debugging
++ * @size: Maximum size of the pool
++ *
++ * Return: a new kdbus_pool on success, ERR_PTR on failure.
++ */
++struct kdbus_pool *kdbus_pool_new(const char *name, size_t size)
++{
++ struct kdbus_pool_slice *s;
++ struct kdbus_pool *p;
++ struct file *f;
++ char *n = NULL;
++ int ret;
++
++ p = kzalloc(sizeof(*p), GFP_KERNEL);
++ if (!p)
++ return ERR_PTR(-ENOMEM);
++
++ if (name) {
++ n = kasprintf(GFP_KERNEL, KBUILD_MODNAME "-conn:%s", name);
++ if (!n) {
++ ret = -ENOMEM;
++ goto exit_free;
++ }
++ }
++
++ f = shmem_file_setup(n ?: KBUILD_MODNAME "-conn", size, 0);
++ kfree(n);
++
++ if (IS_ERR(f)) {
++ ret = PTR_ERR(f);
++ goto exit_free;
++ }
++
++ ret = get_write_access(file_inode(f));
++ if (ret < 0)
++ goto exit_put_shmem;
++
++ /* allocate first slice spanning the entire pool */
++ s = kdbus_pool_slice_new(p, 0, size);
++ if (!s) {
++ ret = -ENOMEM;
++ goto exit_put_write;
++ }
++
++ p->f = f;
++ p->size = size;
++ p->slices_free = RB_ROOT;
++ p->slices_busy = RB_ROOT;
++ mutex_init(&p->lock);
++
++ INIT_LIST_HEAD(&p->slices);
++ list_add(&s->entry, &p->slices);
++
++ kdbus_pool_add_free_slice(p, s);
++ return p;
++
++exit_put_write:
++ put_write_access(file_inode(f));
++exit_put_shmem:
++ fput(f);
++exit_free:
++ kfree(p);
++ return ERR_PTR(ret);
++}
++
++/**
++ * kdbus_pool_free() - destroy pool
++ * @pool: The receiver's pool
++ */
++void kdbus_pool_free(struct kdbus_pool *pool)
++{
++ struct kdbus_pool_slice *s, *tmp;
++
++ if (!pool)
++ return;
++
++ list_for_each_entry_safe(s, tmp, &pool->slices, entry) {
++ list_del(&s->entry);
++ kfree(s);
++ }
++
++ put_write_access(file_inode(pool->f));
++ fput(pool->f);
++ kfree(pool);
++}
++
++/**
++ * kdbus_pool_accounted() - retrieve accounting information
++ * @pool: pool to query
++ * @size: output for overall pool size
++ * @acc: output for currently accounted size
++ *
++ * This returns accounting information of the pool. Note that the data might
++ * change after the function returns, as the pool lock is dropped. You need to
++ * protect the data via other means, if you need reliable accounting.
++ */
++void kdbus_pool_accounted(struct kdbus_pool *pool, size_t *size, size_t *acc)
++{
++ mutex_lock(&pool->lock);
++ if (size)
++ *size = pool->size;
++ if (acc)
++ *acc = pool->accounted_size;
++ mutex_unlock(&pool->lock);
++}
++
++/**
++ * kdbus_pool_slice_copy_iovec() - copy user memory to a slice
++ * @slice: The slice to write to
++ * @off: Offset in the slice to write to
++ * @iov: iovec array, pointing to data to copy
++ * @iov_len: Number of elements in @iov
++ * @total_len: Total number of bytes described in members of @iov
++ *
++ * User memory referenced by @iov will be copied into @slice at offset @off.
++ *
++ * Return: the numbers of bytes copied, negative errno on failure.
++ */
++ssize_t
++kdbus_pool_slice_copy_iovec(const struct kdbus_pool_slice *slice, loff_t off,
++ struct iovec *iov, size_t iov_len, size_t total_len)
++{
++ struct iov_iter iter;
++ ssize_t len;
++
++ if (WARN_ON(off + total_len > slice->size))
++ return -EFAULT;
++
++ off += slice->off;
++ iov_iter_init(&iter, WRITE, iov, iov_len, total_len);
++ len = vfs_iter_write(slice->pool->f, &iter, &off);
++
++ return (len >= 0 && len != total_len) ? -EFAULT : len;
++}
++
++/**
++ * kdbus_pool_slice_copy_kvec() - copy kernel memory to a slice
++ * @slice: The slice to write to
++ * @off: Offset in the slice to write to
++ * @kvec: kvec array, pointing to data to copy
++ * @kvec_len: Number of elements in @kvec
++ * @total_len: Total number of bytes described in members of @kvec
++ *
++ * Kernel memory referenced by @kvec will be copied into @slice at offset @off.
++ *
++ * Return: the numbers of bytes copied, negative errno on failure.
++ */
++ssize_t kdbus_pool_slice_copy_kvec(const struct kdbus_pool_slice *slice,
++ loff_t off, struct kvec *kvec,
++ size_t kvec_len, size_t total_len)
++{
++ struct iov_iter iter;
++ mm_segment_t old_fs;
++ ssize_t len;
++
++ if (WARN_ON(off + total_len > slice->size))
++ return -EFAULT;
++
++ off += slice->off;
++ iov_iter_kvec(&iter, WRITE | ITER_KVEC, kvec, kvec_len, total_len);
++
++ old_fs = get_fs();
++ set_fs(get_ds());
++ len = vfs_iter_write(slice->pool->f, &iter, &off);
++ set_fs(old_fs);
++
++ return (len >= 0 && len != total_len) ? -EFAULT : len;
++}
++
++/**
++ * kdbus_pool_slice_copy() - copy data from one slice into another
++ * @slice_dst: destination slice
++ * @slice_src: source slice
++ *
++ * Return: 0 on success, negative error number on failure.
++ */
++int kdbus_pool_slice_copy(const struct kdbus_pool_slice *slice_dst,
++ const struct kdbus_pool_slice *slice_src)
++{
++ struct file *f_src = slice_src->pool->f;
++ struct file *f_dst = slice_dst->pool->f;
++ struct inode *i_dst = file_inode(f_dst);
++ struct address_space *mapping_dst = f_dst->f_mapping;
++ const struct address_space_operations *aops = mapping_dst->a_ops;
++ unsigned long len = slice_src->size;
++ loff_t off_src = slice_src->off;
++ loff_t off_dst = slice_dst->off;
++ mm_segment_t old_fs;
++ int ret = 0;
++
++ if (WARN_ON(slice_src->size != slice_dst->size) ||
++ WARN_ON(slice_src->free || slice_dst->free))
++ return -EINVAL;
++
++ mutex_lock(&i_dst->i_mutex);
++ old_fs = get_fs();
++ set_fs(get_ds());
++ while (len > 0) {
++ unsigned long page_off;
++ unsigned long copy_len;
++ char __user *kaddr;
++ struct page *page;
++ ssize_t n_read;
++ void *fsdata;
++ long status;
++
++ page_off = off_dst & (PAGE_CACHE_SIZE - 1);
++ copy_len = min_t(unsigned long,
++ PAGE_CACHE_SIZE - page_off, len);
++
++ status = aops->write_begin(f_dst, mapping_dst, off_dst,
++ copy_len, 0, &page, &fsdata);
++ if (unlikely(status < 0)) {
++ ret = status;
++ break;
++ }
++
++ kaddr = (char __force __user *)kmap(page) + page_off;
++ n_read = f_src->f_op->read(f_src, kaddr, copy_len, &off_src);
++ kunmap(page);
++ mark_page_accessed(page);
++ flush_dcache_page(page);
++
++ if (unlikely(n_read != copy_len)) {
++ ret = -EFAULT;
++ break;
++ }
++
++ status = aops->write_end(f_dst, mapping_dst, off_dst,
++ copy_len, copy_len, page, fsdata);
++ if (unlikely(status != copy_len)) {
++ ret = -EFAULT;
++ break;
++ }
++
++ off_dst += copy_len;
++ len -= copy_len;
++ }
++ set_fs(old_fs);
++ mutex_unlock(&i_dst->i_mutex);
++
++ return ret;
++}
++
++/**
++ * kdbus_pool_mmap() - map the pool into the process
++ * @pool: The receiver's pool
++ * @vma: passed by mmap() syscall
++ *
++ * Return: the result of the mmap() call, negative errno on failure.
++ */
++int kdbus_pool_mmap(const struct kdbus_pool *pool, struct vm_area_struct *vma)
++{
++ /* deny write access to the pool */
++ if (vma->vm_flags & VM_WRITE)
++ return -EPERM;
++ vma->vm_flags &= ~VM_MAYWRITE;
++
++ /* do not allow to map more than the size of the file */
++ if ((vma->vm_end - vma->vm_start) > pool->size)
++ return -EFAULT;
++
++ /* replace the connection file with our shmem file */
++ if (vma->vm_file)
++ fput(vma->vm_file);
++ vma->vm_file = get_file(pool->f);
++
++ return pool->f->f_op->mmap(pool->f, vma);
++}
+diff --git a/ipc/kdbus/pool.h b/ipc/kdbus/pool.h
+new file mode 100644
+index 0000000..a903821
+--- /dev/null
++++ b/ipc/kdbus/pool.h
+@@ -0,0 +1,46 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_POOL_H
++#define __KDBUS_POOL_H
++
++#include <linux/uio.h>
++
++struct kdbus_pool;
++struct kdbus_pool_slice;
++
++struct kdbus_pool *kdbus_pool_new(const char *name, size_t size);
++void kdbus_pool_free(struct kdbus_pool *pool);
++void kdbus_pool_accounted(struct kdbus_pool *pool, size_t *size, size_t *acc);
++int kdbus_pool_mmap(const struct kdbus_pool *pool, struct vm_area_struct *vma);
++int kdbus_pool_release_offset(struct kdbus_pool *pool, size_t off);
++void kdbus_pool_publish_empty(struct kdbus_pool *pool, u64 *off, u64 *size);
++
++struct kdbus_pool_slice *kdbus_pool_slice_alloc(struct kdbus_pool *pool,
++ size_t size, bool accounted);
++void kdbus_pool_slice_release(struct kdbus_pool_slice *slice);
++void kdbus_pool_slice_publish(struct kdbus_pool_slice *slice,
++ u64 *out_offset, u64 *out_size);
++off_t kdbus_pool_slice_offset(const struct kdbus_pool_slice *slice);
++size_t kdbus_pool_slice_size(const struct kdbus_pool_slice *slice);
++int kdbus_pool_slice_copy(const struct kdbus_pool_slice *slice_dst,
++ const struct kdbus_pool_slice *slice_src);
++ssize_t kdbus_pool_slice_copy_kvec(const struct kdbus_pool_slice *slice,
++ loff_t off, struct kvec *kvec,
++ size_t kvec_count, size_t total_len);
++ssize_t kdbus_pool_slice_copy_iovec(const struct kdbus_pool_slice *slice,
++ loff_t off, struct iovec *iov,
++ size_t iov_count, size_t total_len);
++
++#endif
+diff --git a/ipc/kdbus/queue.c b/ipc/kdbus/queue.c
+new file mode 100644
+index 0000000..a449464
+--- /dev/null
++++ b/ipc/kdbus/queue.c
+@@ -0,0 +1,678 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/audit.h>
++#include <linux/file.h>
++#include <linux/fs.h>
++#include <linux/hashtable.h>
++#include <linux/idr.h>
++#include <linux/init.h>
++#include <linux/math64.h>
++#include <linux/mm.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/poll.h>
++#include <linux/sched.h>
++#include <linux/sizes.h>
++#include <linux/slab.h>
++#include <linux/syscalls.h>
++#include <linux/uio.h>
++
++#include "util.h"
++#include "domain.h"
++#include "connection.h"
++#include "item.h"
++#include "message.h"
++#include "metadata.h"
++#include "queue.h"
++#include "reply.h"
++
++/**
++ * kdbus_queue_init() - initialize data structure related to a queue
++ * @queue: The queue to initialize
++ */
++void kdbus_queue_init(struct kdbus_queue *queue)
++{
++ INIT_LIST_HEAD(&queue->msg_list);
++ queue->msg_prio_queue = RB_ROOT;
++}
++
++/**
++ * kdbus_queue_peek() - Retrieves an entry from a queue
++ * @queue: The queue
++ * @priority: The minimum priority of the entry to peek
++ * @use_priority: Boolean flag whether or not to peek by priority
++ *
++ * Look for a entry in a queue, either by priority, or the oldest one (FIFO).
++ * The entry is not freed, put off the queue's lists or anything else.
++ *
++ * Return: the peeked queue entry on success, NULL if no suitable msg is found
++ */
++struct kdbus_queue_entry *kdbus_queue_peek(struct kdbus_queue *queue,
++ s64 priority, bool use_priority)
++{
++ struct kdbus_queue_entry *e;
++
++ if (list_empty(&queue->msg_list))
++ return NULL;
++
++ if (use_priority) {
++ /* get next entry with highest priority */
++ e = rb_entry(queue->msg_prio_highest,
++ struct kdbus_queue_entry, prio_node);
++
++ /* no entry with the requested priority */
++ if (e->priority > priority)
++ return NULL;
++ } else {
++ /* ignore the priority, return the next entry in the entry */
++ e = list_first_entry(&queue->msg_list,
++ struct kdbus_queue_entry, entry);
++ }
++
++ return e;
++}
++
++static void kdbus_queue_entry_link(struct kdbus_queue_entry *entry)
++{
++ struct kdbus_queue *queue = &entry->conn->queue;
++ struct rb_node **n, *pn = NULL;
++ bool highest = true;
++
++ lockdep_assert_held(&entry->conn->lock);
++ if (WARN_ON(!list_empty(&entry->entry)))
++ return;
++
++ /* sort into priority entry tree */
++ n = &queue->msg_prio_queue.rb_node;
++ while (*n) {
++ struct kdbus_queue_entry *e;
++
++ pn = *n;
++ e = rb_entry(pn, struct kdbus_queue_entry, prio_node);
++
++ /* existing node for this priority, add to its list */
++ if (likely(entry->priority == e->priority)) {
++ list_add_tail(&entry->prio_entry, &e->prio_entry);
++ goto prio_done;
++ }
++
++ if (entry->priority < e->priority) {
++ n = &pn->rb_left;
++ } else {
++ n = &pn->rb_right;
++ highest = false;
++ }
++ }
++
++ /* cache highest-priority entry */
++ if (highest)
++ queue->msg_prio_highest = &entry->prio_node;
++
++ /* new node for this priority */
++ rb_link_node(&entry->prio_node, pn, n);
++ rb_insert_color(&entry->prio_node, &queue->msg_prio_queue);
++ INIT_LIST_HEAD(&entry->prio_entry);
++
++prio_done:
++ /* add to unsorted fifo list */
++ list_add_tail(&entry->entry, &queue->msg_list);
++}
++
++static void kdbus_queue_entry_unlink(struct kdbus_queue_entry *entry)
++{
++ struct kdbus_queue *queue = &entry->conn->queue;
++
++ lockdep_assert_held(&entry->conn->lock);
++ if (list_empty(&entry->entry))
++ return;
++
++ list_del_init(&entry->entry);
++
++ if (list_empty(&entry->prio_entry)) {
++ /*
++ * Single entry for this priority, update cached
++ * highest-priority entry, remove the tree node.
++ */
++ if (queue->msg_prio_highest == &entry->prio_node)
++ queue->msg_prio_highest = rb_next(&entry->prio_node);
++
++ rb_erase(&entry->prio_node, &queue->msg_prio_queue);
++ } else {
++ struct kdbus_queue_entry *q;
++
++ /*
++ * Multiple entries for this priority entry, get next one in
++ * the list. Update cached highest-priority entry, store the
++ * new one as the tree node.
++ */
++ q = list_first_entry(&entry->prio_entry,
++ struct kdbus_queue_entry, prio_entry);
++ list_del(&entry->prio_entry);
++
++ if (queue->msg_prio_highest == &entry->prio_node)
++ queue->msg_prio_highest = &q->prio_node;
++
++ rb_replace_node(&entry->prio_node, &q->prio_node,
++ &queue->msg_prio_queue);
++ }
++}
++
++/**
++ * kdbus_queue_entry_new() - allocate a queue entry
++ * @conn_dst: destination connection
++ * @kmsg: kmsg object the queue entry should track
++ * @user: user to account message on (or NULL for kernel messages)
++ *
++ * Allocates a queue entry based on a given kmsg and allocate space for
++ * the message payload and the requested metadata in the connection's pool.
++ * The entry is not actually added to the queue's lists at this point.
++ *
++ * Return: the allocated entry on success, or an ERR_PTR on failures.
++ */
++struct kdbus_queue_entry *kdbus_queue_entry_new(struct kdbus_conn *conn_dst,
++ const struct kdbus_kmsg *kmsg,
++ struct kdbus_user *user)
++{
++ struct kdbus_msg_resources *res = kmsg->res;
++ const struct kdbus_msg *msg = &kmsg->msg;
++ struct kdbus_queue_entry *entry;
++ size_t memfd_cnt = 0;
++ struct kvec kvec[2];
++ size_t meta_size;
++ size_t msg_size;
++ u64 payload_off;
++ u64 size = 0;
++ int ret = 0;
++
++ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
++ if (!entry)
++ return ERR_PTR(-ENOMEM);
++
++ INIT_LIST_HEAD(&entry->entry);
++ entry->priority = msg->priority;
++ entry->dst_name_id = kmsg->dst_name_id;
++ entry->msg_res = kdbus_msg_resources_ref(res);
++ entry->proc_meta = kdbus_meta_proc_ref(kmsg->proc_meta);
++ entry->conn_meta = kdbus_meta_conn_ref(kmsg->conn_meta);
++ entry->conn = kdbus_conn_ref(conn_dst);
++
++ if (kmsg->msg.src_id == KDBUS_SRC_ID_KERNEL)
++ msg_size = msg->size;
++ else
++ msg_size = offsetof(struct kdbus_msg, items);
++
++ /* sum up the size of the needed slice */
++ size = msg_size;
++
++ if (res) {
++ size += res->vec_count *
++ KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++
++ if (res->memfd_count) {
++ entry->memfd_offset =
++ kcalloc(res->memfd_count, sizeof(size_t),
++ GFP_KERNEL);
++ if (!entry->memfd_offset) {
++ ret = -ENOMEM;
++ goto exit_free_entry;
++ }
++
++ size += res->memfd_count *
++ KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
++ }
++
++ if (res->fds_count)
++ size += KDBUS_ITEM_SIZE(sizeof(int) * res->fds_count);
++
++ if (res->dst_name)
++ size += KDBUS_ITEM_SIZE(strlen(res->dst_name) + 1);
++ }
++
++ /*
++ * Remember the offset of the metadata part, so we can override
++ * this part later during kdbus_queue_entry_install().
++ */
++ entry->meta_offset = size;
++
++ if (entry->proc_meta || entry->conn_meta) {
++ entry->attach_flags =
++ atomic64_read(&conn_dst->attach_flags_recv);
++
++ ret = kdbus_meta_export_prepare(entry->proc_meta,
++ entry->conn_meta,
++ &entry->attach_flags,
++ &meta_size);
++ if (ret < 0)
++ goto exit_free_entry;
++
++ size += meta_size;
++ }
++
++ payload_off = size;
++ size += kmsg->pool_size;
++ size = KDBUS_ALIGN8(size);
++
++ ret = kdbus_conn_quota_inc(conn_dst, user, size,
++ res ? res->fds_count : 0);
++ if (ret < 0)
++ goto exit_free_entry;
++
++ entry->slice = kdbus_pool_slice_alloc(conn_dst->pool, size, true);
++ if (IS_ERR(entry->slice)) {
++ ret = PTR_ERR(entry->slice);
++ entry->slice = NULL;
++ kdbus_conn_quota_dec(conn_dst, user, size,
++ res ? res->fds_count : 0);
++ goto exit_free_entry;
++ }
++
++ /* we accounted for exactly 'size' bytes, make sure it didn't grow */
++ WARN_ON(kdbus_pool_slice_size(entry->slice) != size);
++ entry->user = kdbus_user_ref(user);
++
++ /* copy message header */
++ kvec[0].iov_base = (char *)msg;
++ kvec[0].iov_len = msg_size;
++
++ ret = kdbus_pool_slice_copy_kvec(entry->slice, 0, kvec, 1, msg_size);
++ if (ret < 0)
++ goto exit_free_entry;
++
++ /* 'size' will now track the write position */
++ size = msg_size;
++
++ /* create message payload items */
++ if (res) {
++ size_t dst_name_len = 0;
++ unsigned int i;
++ size_t sz = 0;
++
++ if (res->dst_name) {
++ dst_name_len = strlen(res->dst_name) + 1;
++ sz += KDBUS_ITEM_SIZE(dst_name_len);
++ }
++
++ for (i = 0; i < res->data_count; ++i) {
++ struct kdbus_vec v;
++ struct kdbus_memfd m;
++
++ switch (res->data[i].type) {
++ case KDBUS_MSG_DATA_VEC:
++ sz += KDBUS_ITEM_SIZE(sizeof(v));
++ break;
++
++ case KDBUS_MSG_DATA_MEMFD:
++ sz += KDBUS_ITEM_SIZE(sizeof(m));
++ break;
++ }
++ }
++
++ if (sz) {
++ struct kdbus_item *items, *item;
++
++ items = kmalloc(sz, GFP_KERNEL);
++ if (!items) {
++ ret = -ENOMEM;
++ goto exit_free_entry;
++ }
++
++ item = items;
++
++ if (res->dst_name)
++ item = kdbus_item_set(item, KDBUS_ITEM_DST_NAME,
++ res->dst_name,
++ dst_name_len);
++
++ for (i = 0; i < res->data_count; ++i) {
++ struct kdbus_msg_data *d = res->data + i;
++ struct kdbus_memfd m = {};
++ struct kdbus_vec v = {};
++
++ switch (d->type) {
++ case KDBUS_MSG_DATA_VEC:
++ v.size = d->size;
++ v.offset = d->vec.off;
++ if (v.offset != ~0ULL)
++ v.offset += payload_off;
++
++ item = kdbus_item_set(item,
++ KDBUS_ITEM_PAYLOAD_OFF,
++ &v, sizeof(v));
++ break;
++
++ case KDBUS_MSG_DATA_MEMFD:
++ /*
++ * Remember the location of memfds, so
++ * we can override the content from
++ * kdbus_queue_entry_install().
++ */
++ entry->memfd_offset[memfd_cnt++] =
++ msg_size +
++ (char *)item - (char *)items +
++ offsetof(struct kdbus_item,
++ memfd);
++
++ item = kdbus_item_set(item,
++ KDBUS_ITEM_PAYLOAD_MEMFD,
++ &m, sizeof(m));
++ break;
++ }
++ }
++
++ kvec[0].iov_base = items;
++ kvec[0].iov_len = sz;
++
++ ret = kdbus_pool_slice_copy_kvec(entry->slice, size,
++ kvec, 1, sz);
++ kfree(items);
++
++ if (ret < 0)
++ goto exit_free_entry;
++
++ size += sz;
++ }
++
++ /*
++ * Remember the location of the FD part, so we can override the
++ * content in kdbus_queue_entry_install().
++ */
++ if (res->fds_count) {
++ entry->fds_offset = size;
++ size += KDBUS_ITEM_SIZE(sizeof(int) * res->fds_count);
++ }
++ }
++
++ /* finally, copy over the actual message payload */
++ if (kmsg->iov_count) {
++ ret = kdbus_pool_slice_copy_iovec(entry->slice, payload_off,
++ kmsg->iov,
++ kmsg->iov_count,
++ kmsg->pool_size);
++ if (ret < 0)
++ goto exit_free_entry;
++ }
++
++ return entry;
++
++exit_free_entry:
++ kdbus_queue_entry_free(entry);
++ return ERR_PTR(ret);
++}
++
++/**
++ * kdbus_queue_entry_free() - free resources of an entry
++ * @entry: The entry to free
++ *
++ * Removes resources allocated by a queue entry, along with the entry itself.
++ * Note that the entry's slice is not freed at this point.
++ */
++void kdbus_queue_entry_free(struct kdbus_queue_entry *entry)
++{
++ if (!entry)
++ return;
++
++ lockdep_assert_held(&entry->conn->lock);
++
++ kdbus_queue_entry_unlink(entry);
++ kdbus_reply_unref(entry->reply);
++
++ if (entry->slice) {
++ kdbus_conn_quota_dec(entry->conn, entry->user,
++ kdbus_pool_slice_size(entry->slice),
++ entry->msg_res ?
++ entry->msg_res->fds_count : 0);
++ kdbus_pool_slice_release(entry->slice);
++ kdbus_user_unref(entry->user);
++ }
++
++ kdbus_msg_resources_unref(entry->msg_res);
++ kdbus_meta_conn_unref(entry->conn_meta);
++ kdbus_meta_proc_unref(entry->proc_meta);
++ kdbus_conn_unref(entry->conn);
++ kfree(entry->memfd_offset);
++ kfree(entry);
++}
++
++/**
++ * kdbus_queue_entry_install() - install message components into the
++ * receiver's process
++ * @entry: The queue entry to install
++ * @return_flags: Pointer to store the return flags for userspace
++ * @install_fds: Whether or not to install associated file descriptors
++ *
++ * This function will create a slice to transport the message header, the
++ * metadata items and other items for information stored in @entry, and
++ * store it as entry->slice.
++ *
++ * If @install_fds is %true, file descriptors will as well be installed.
++ * This function must always be called from the task context of the receiver.
++ *
++ * Return: 0 on success.
++ */
++int kdbus_queue_entry_install(struct kdbus_queue_entry *entry,
++ u64 *return_flags, bool install_fds)
++{
++ u64 msg_size = entry->meta_offset;
++ struct kdbus_conn *conn_dst = entry->conn;
++ struct kdbus_msg_resources *res;
++ bool incomplete_fds = false;
++ struct kvec kvec[2];
++ size_t memfds = 0;
++ int i, ret;
++
++ lockdep_assert_held(&conn_dst->lock);
++
++ if (entry->proc_meta || entry->conn_meta) {
++ size_t meta_size;
++
++ ret = kdbus_meta_export(entry->proc_meta,
++ entry->conn_meta,
++ entry->attach_flags,
++ entry->slice,
++ entry->meta_offset,
++ &meta_size);
++ if (ret < 0)
++ return ret;
++
++ msg_size += meta_size;
++ }
++
++ /* Update message size at offset 0 */
++ kvec[0].iov_base = &msg_size;
++ kvec[0].iov_len = sizeof(msg_size);
++
++ ret = kdbus_pool_slice_copy_kvec(entry->slice, 0, kvec, 1,
++ sizeof(msg_size));
++ if (ret < 0)
++ return ret;
++
++ res = entry->msg_res;
++
++ if (!res)
++ return 0;
++
++ if (res->fds_count) {
++ struct kdbus_item_header hdr;
++ size_t off;
++ int *fds;
++
++ fds = kmalloc_array(res->fds_count, sizeof(int), GFP_KERNEL);
++ if (!fds)
++ return -ENOMEM;
++
++ for (i = 0; i < res->fds_count; i++) {
++ if (install_fds) {
++ fds[i] = get_unused_fd_flags(O_CLOEXEC);
++ if (fds[i] >= 0)
++ fd_install(fds[i],
++ get_file(res->fds[i]));
++ else
++ incomplete_fds = true;
++ } else {
++ fds[i] = -1;
++ }
++ }
++
++ off = entry->fds_offset;
++
++ hdr.type = KDBUS_ITEM_FDS;
++ hdr.size = KDBUS_ITEM_HEADER_SIZE +
++ sizeof(int) * res->fds_count;
++
++ kvec[0].iov_base = &hdr;
++ kvec[0].iov_len = sizeof(hdr);
++
++ kvec[1].iov_base = fds;
++ kvec[1].iov_len = sizeof(int) * res->fds_count;
++
++ ret = kdbus_pool_slice_copy_kvec(entry->slice, off,
++ kvec, 2, hdr.size);
++ kfree(fds);
++
++ if (ret < 0)
++ return ret;
++ }
++
++ for (i = 0; i < res->data_count; ++i) {
++ struct kdbus_msg_data *d = res->data + i;
++ struct kdbus_memfd m;
++
++ if (d->type != KDBUS_MSG_DATA_MEMFD)
++ continue;
++
++ m.start = d->memfd.start;
++ m.size = d->size;
++ m.fd = -1;
++
++ if (install_fds) {
++ m.fd = get_unused_fd_flags(O_CLOEXEC);
++ if (m.fd < 0) {
++ m.fd = -1;
++ incomplete_fds = true;
++ } else {
++ fd_install(m.fd,
++ get_file(d->memfd.file));
++ }
++ }
++
++ kvec[0].iov_base = &m;
++ kvec[0].iov_len = sizeof(m);
++
++ ret = kdbus_pool_slice_copy_kvec(entry->slice,
++ entry->memfd_offset[memfds++],
++ kvec, 1, sizeof(m));
++ if (ret < 0)
++ return ret;
++ }
++
++ if (incomplete_fds)
++ *return_flags |= KDBUS_RECV_RETURN_INCOMPLETE_FDS;
++
++ return 0;
++}
++
++/**
++ * kdbus_queue_entry_enqueue() - enqueue an entry
++ * @entry: entry to enqueue
++ * @reply: reply to link to this entry (or NULL if none)
++ *
++ * This enqueues an unqueued entry into the message queue of the linked
++ * connection. It also binds a reply object to the entry so we can remember it
++ * when the message is moved.
++ *
++ * Once this call returns (and the connection lock is released), this entry can
++ * be dequeued by the target connection. Note that the entry will not be removed
++ * from the queue until it is destroyed.
++ */
++void kdbus_queue_entry_enqueue(struct kdbus_queue_entry *entry,
++ struct kdbus_reply *reply)
++{
++ lockdep_assert_held(&entry->conn->lock);
++
++ if (WARN_ON(entry->reply) || WARN_ON(!list_empty(&entry->entry)))
++ return;
++
++ entry->reply = kdbus_reply_ref(reply);
++ kdbus_queue_entry_link(entry);
++}
++
++/**
++ * kdbus_queue_entry_move() - move queue entry
++ * @e: queue entry to move
++ * @dst: destination connection to queue the entry on
++ *
++ * This moves a queue entry onto a different connection. It allocates a new
++ * slice on the target connection and copies the message over. If the copy
++ * succeeded, we move the entry from @src to @dst.
++ *
++ * On failure, the entry is left untouched.
++ *
++ * The queue entry must be queued right now, and after the call succeeds it will
++ * be queued on the destination, but no longer on the source.
++ *
++ * The caller must hold the connection lock of the source *and* destination.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_queue_entry_move(struct kdbus_queue_entry *e,
++ struct kdbus_conn *dst)
++{
++ struct kdbus_pool_slice *slice = NULL;
++ struct kdbus_conn *src = e->conn;
++ size_t size, fds;
++ int ret;
++
++ lockdep_assert_held(&src->lock);
++ lockdep_assert_held(&dst->lock);
++
++ if (WARN_ON(IS_ERR(e->user)) || WARN_ON(list_empty(&e->entry)))
++ return -EINVAL;
++ if (src == dst)
++ return 0;
++
++ size = kdbus_pool_slice_size(e->slice);
++ fds = e->msg_res ? e->msg_res->fds_count : 0;
++
++ ret = kdbus_conn_quota_inc(dst, e->user, size, fds);
++ if (ret < 0)
++ return ret;
++
++ slice = kdbus_pool_slice_alloc(dst->pool, size, true);
++ if (IS_ERR(slice)) {
++ ret = PTR_ERR(slice);
++ slice = NULL;
++ goto error;
++ }
++
++ ret = kdbus_pool_slice_copy(slice, e->slice);
++ if (ret < 0)
++ goto error;
++
++ kdbus_queue_entry_unlink(e);
++ kdbus_conn_quota_dec(src, e->user, size, fds);
++ kdbus_pool_slice_release(e->slice);
++ kdbus_conn_unref(e->conn);
++
++ e->slice = slice;
++ e->conn = kdbus_conn_ref(dst);
++ kdbus_queue_entry_link(e);
++
++ return 0;
++
++error:
++ kdbus_pool_slice_release(slice);
++ kdbus_conn_quota_dec(dst, e->user, size, fds);
++ return ret;
++}
+diff --git a/ipc/kdbus/queue.h b/ipc/kdbus/queue.h
+new file mode 100644
+index 0000000..7f2db96
+--- /dev/null
++++ b/ipc/kdbus/queue.h
+@@ -0,0 +1,92 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_QUEUE_H
++#define __KDBUS_QUEUE_H
++
++struct kdbus_user;
++
++/**
++ * struct kdbus_queue - a connection's message queue
++ * @msg_list: List head for kdbus_queue_entry objects
++ * @msg_prio_queue: RB tree root for messages, sorted by priority
++ * @msg_prio_highest: Link to the RB node referencing the message with the
++ * highest priority in the tree.
++ */
++struct kdbus_queue {
++ struct list_head msg_list;
++ struct rb_root msg_prio_queue;
++ struct rb_node *msg_prio_highest;
++};
++
++/**
++ * struct kdbus_queue_entry - messages waiting to be read
++ * @entry: Entry in the connection's list
++ * @prio_node: Entry in the priority queue tree
++ * @prio_entry: Queue tree node entry in the list of one priority
++ * @slice: Slice in the receiver's pool for the message
++ * @attach_flags: Attach flags used during slice allocation
++ * @meta_offset: Offset of first metadata item in slice
++ * @fds_offset: Offset of FD item in slice
++ * @memfd_offset: Array of slice-offsets for all memfd items
++ * @priority: Message priority
++ * @dst_name_id: The sequence number of the name this message is
++ * addressed to, 0 for messages sent to an ID
++ * @msg_res: Message resources
++ * @proc_meta: Process metadata, captured at message arrival
++ * @conn_meta: Connection metadata, captured at message arrival
++ * @reply: The reply block if a reply to this message is expected
++ * @user: User used for accounting
++ */
++struct kdbus_queue_entry {
++ struct list_head entry;
++ struct rb_node prio_node;
++ struct list_head prio_entry;
++
++ struct kdbus_pool_slice *slice;
++
++ u64 attach_flags;
++ size_t meta_offset;
++ size_t fds_offset;
++ size_t *memfd_offset;
++
++ s64 priority;
++ u64 dst_name_id;
++
++ struct kdbus_msg_resources *msg_res;
++ struct kdbus_meta_proc *proc_meta;
++ struct kdbus_meta_conn *conn_meta;
++ struct kdbus_reply *reply;
++ struct kdbus_conn *conn;
++ struct kdbus_user *user;
++};
++
++struct kdbus_kmsg;
++
++void kdbus_queue_init(struct kdbus_queue *queue);
++struct kdbus_queue_entry *kdbus_queue_peek(struct kdbus_queue *queue,
++ s64 priority, bool use_priority);
++
++struct kdbus_queue_entry *kdbus_queue_entry_new(struct kdbus_conn *conn_dst,
++ const struct kdbus_kmsg *kmsg,
++ struct kdbus_user *user);
++void kdbus_queue_entry_free(struct kdbus_queue_entry *entry);
++int kdbus_queue_entry_install(struct kdbus_queue_entry *entry,
++ u64 *return_flags, bool install_fds);
++void kdbus_queue_entry_enqueue(struct kdbus_queue_entry *entry,
++ struct kdbus_reply *reply);
++int kdbus_queue_entry_move(struct kdbus_queue_entry *entry,
++ struct kdbus_conn *dst);
++
++#endif /* __KDBUS_QUEUE_H */
+diff --git a/ipc/kdbus/reply.c b/ipc/kdbus/reply.c
+new file mode 100644
+index 0000000..008dca8
+--- /dev/null
++++ b/ipc/kdbus/reply.c
+@@ -0,0 +1,257 @@
++#include <linux/init.h>
++#include <linux/mm.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/slab.h>
++#include <linux/uio.h>
++
++#include "bus.h"
++#include "connection.h"
++#include "endpoint.h"
++#include "message.h"
++#include "metadata.h"
++#include "names.h"
++#include "domain.h"
++#include "item.h"
++#include "notify.h"
++#include "policy.h"
++#include "reply.h"
++#include "util.h"
++
++/**
++ * kdbus_reply_new() - Allocate and set up a new kdbus_reply object
++ * @reply_src: The connection a reply is expected from
++ * @reply_dst: The connection this reply object belongs to
++ * @msg: Message associated with the reply
++ * @name_entry: Name entry used to send the message
++ * @sync: Whether or not to make this reply synchronous
++ *
++ * Allocate and fill a new kdbus_reply object.
++ *
++ * Return: New kdbus_conn object on success, ERR_PTR on error.
++ */
++struct kdbus_reply *kdbus_reply_new(struct kdbus_conn *reply_src,
++ struct kdbus_conn *reply_dst,
++ const struct kdbus_msg *msg,
++ struct kdbus_name_entry *name_entry,
++ bool sync)
++{
++ struct kdbus_reply *r;
++ int ret = 0;
++
++ if (atomic_inc_return(&reply_dst->request_count) >
++ KDBUS_CONN_MAX_REQUESTS_PENDING) {
++ ret = -EMLINK;
++ goto exit_dec_request_count;
++ }
++
++ r = kzalloc(sizeof(*r), GFP_KERNEL);
++ if (!r) {
++ ret = -ENOMEM;
++ goto exit_dec_request_count;
++ }
++
++ kref_init(&r->kref);
++ INIT_LIST_HEAD(&r->entry);
++ r->reply_src = kdbus_conn_ref(reply_src);
++ r->reply_dst = kdbus_conn_ref(reply_dst);
++ r->cookie = msg->cookie;
++ r->name_id = name_entry ? name_entry->name_id : 0;
++ r->deadline_ns = msg->timeout_ns;
++
++ if (sync) {
++ r->sync = true;
++ r->waiting = true;
++ }
++
++exit_dec_request_count:
++ if (ret < 0) {
++ atomic_dec(&reply_dst->request_count);
++ return ERR_PTR(ret);
++ }
++
++ return r;
++}
++
++static void __kdbus_reply_free(struct kref *kref)
++{
++ struct kdbus_reply *reply =
++ container_of(kref, struct kdbus_reply, kref);
++
++ atomic_dec(&reply->reply_dst->request_count);
++ kdbus_conn_unref(reply->reply_src);
++ kdbus_conn_unref(reply->reply_dst);
++ kfree(reply);
++}
++
++/**
++ * kdbus_reply_ref() - Increase reference on kdbus_reply
++ * @r: The reply, may be %NULL
++ *
++ * Return: The reply object with an extra reference
++ */
++struct kdbus_reply *kdbus_reply_ref(struct kdbus_reply *r)
++{
++ if (r)
++ kref_get(&r->kref);
++ return r;
++}
++
++/**
++ * kdbus_reply_unref() - Decrease reference on kdbus_reply
++ * @r: The reply, may be %NULL
++ *
++ * Return: NULL
++ */
++struct kdbus_reply *kdbus_reply_unref(struct kdbus_reply *r)
++{
++ if (r)
++ kref_put(&r->kref, __kdbus_reply_free);
++ return NULL;
++}
++
++/**
++ * kdbus_reply_link() - Link reply object into target connection
++ * @r: Reply to link
++ */
++void kdbus_reply_link(struct kdbus_reply *r)
++{
++ if (WARN_ON(!list_empty(&r->entry)))
++ return;
++
++ list_add(&r->entry, &r->reply_dst->reply_list);
++ kdbus_reply_ref(r);
++}
++
++/**
++ * kdbus_reply_unlink() - Unlink reply object from target connection
++ * @r: Reply to unlink
++ */
++void kdbus_reply_unlink(struct kdbus_reply *r)
++{
++ if (!list_empty(&r->entry)) {
++ list_del_init(&r->entry);
++ kdbus_reply_unref(r);
++ }
++}
++
++/**
++ * kdbus_sync_reply_wakeup() - Wake a synchronously blocking reply
++ * @reply: The reply object
++ * @err: Error code to set on the remote side
++ *
++ * Remove the synchronous reply object from its connection reply_list, and
++ * wake up remote peer (method origin) with the appropriate synchronous reply
++ * code.
++ */
++void kdbus_sync_reply_wakeup(struct kdbus_reply *reply, int err)
++{
++ if (WARN_ON(!reply->sync))
++ return;
++
++ reply->waiting = false;
++ reply->err = err;
++ wake_up_interruptible(&reply->reply_dst->wait);
++}
++
++/**
++ * kdbus_reply_find() - Find the corresponding reply object
++ * @replying: The replying connection or NULL
++ * @reply_dst: The connection the reply will be sent to
++ * (method origin)
++ * @cookie: The cookie of the requesting message
++ *
++ * Lookup a reply object that should be sent as a reply by
++ * @replying to @reply_dst with the given cookie.
++ *
++ * Callers must take the @reply_dst lock.
++ *
++ * Return: the corresponding reply object or NULL if not found
++ */
++struct kdbus_reply *kdbus_reply_find(struct kdbus_conn *replying,
++ struct kdbus_conn *reply_dst,
++ u64 cookie)
++{
++ struct kdbus_reply *r, *reply = NULL;
++
++ list_for_each_entry(r, &reply_dst->reply_list, entry) {
++ if (r->cookie == cookie &&
++ (!replying || r->reply_src == replying)) {
++ reply = r;
++ break;
++ }
++ }
++
++ return reply;
++}
++
++/**
++ * kdbus_reply_list_scan_work() - Worker callback to scan the replies of a
++ * connection for exceeded timeouts
++ * @work: Work struct of the connection to scan
++ *
++ * Walk the list of replies stored with a connection and look for entries
++ * that have exceeded their timeout. If such an entry is found, a timeout
++ * notification is sent to the waiting peer, and the reply is removed from
++ * the list.
++ *
++ * The work is rescheduled to the nearest timeout found during the list
++ * iteration.
++ */
++void kdbus_reply_list_scan_work(struct work_struct *work)
++{
++ struct kdbus_conn *conn =
++ container_of(work, struct kdbus_conn, work.work);
++ struct kdbus_reply *reply, *reply_tmp;
++ u64 deadline = ~0ULL;
++ u64 now;
++
++ now = ktime_get_ns();
++
++ mutex_lock(&conn->lock);
++ if (!kdbus_conn_active(conn)) {
++ mutex_unlock(&conn->lock);
++ return;
++ }
++
++ list_for_each_entry_safe(reply, reply_tmp, &conn->reply_list, entry) {
++ /*
++ * If the reply block is waiting for synchronous I/O,
++ * the timeout is handled by wait_event_*_timeout(),
++ * so we don't have to care for it here.
++ */
++ if (reply->sync && !reply->interrupted)
++ continue;
++
++ WARN_ON(reply->reply_dst != conn);
++
++ if (reply->deadline_ns > now) {
++ /* remember next timeout */
++ if (deadline > reply->deadline_ns)
++ deadline = reply->deadline_ns;
++
++ continue;
++ }
++
++ /*
++ * A zero deadline means the connection died, was
++ * cleaned up already and the notification was sent.
++ * Don't send notifications for reply trackers that were
++ * left in an interrupted syscall state.
++ */
++ if (reply->deadline_ns != 0 && !reply->interrupted)
++ kdbus_notify_reply_timeout(conn->ep->bus, conn->id,
++ reply->cookie);
++
++ kdbus_reply_unlink(reply);
++ }
++
++ /* rearm delayed work with next timeout */
++ if (deadline != ~0ULL)
++ schedule_delayed_work(&conn->work,
++ nsecs_to_jiffies(deadline - now));
++
++ mutex_unlock(&conn->lock);
++
++ kdbus_notify_flush(conn->ep->bus);
++}
+diff --git a/ipc/kdbus/reply.h b/ipc/kdbus/reply.h
+new file mode 100644
+index 0000000..68d5232
+--- /dev/null
++++ b/ipc/kdbus/reply.h
+@@ -0,0 +1,68 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_REPLY_H
++#define __KDBUS_REPLY_H
++
++/**
++ * struct kdbus_reply - an entry of kdbus_conn's list of replies
++ * @kref: Ref-count of this object
++ * @entry: The entry of the connection's reply_list
++ * @reply_src: The connection the reply will be sent from
++ * @reply_dst: The connection the reply will be sent to
++ * @queue_entry: The queue entry item that is prepared by the replying
++ * connection
++ * @deadline_ns: The deadline of the reply, in nanoseconds
++ * @cookie: The cookie of the requesting message
++ * @name_id: ID of the well-known name the original msg was sent to
++ * @sync: The reply block is waiting for synchronous I/O
++ * @waiting: The condition to synchronously wait for
++ * @interrupted: The sync reply was left in an interrupted state
++ * @err: The error code for the synchronous reply
++ */
++struct kdbus_reply {
++ struct kref kref;
++ struct list_head entry;
++ struct kdbus_conn *reply_src;
++ struct kdbus_conn *reply_dst;
++ struct kdbus_queue_entry *queue_entry;
++ u64 deadline_ns;
++ u64 cookie;
++ u64 name_id;
++ bool sync:1;
++ bool waiting:1;
++ bool interrupted:1;
++ int err;
++};
++
++struct kdbus_reply *kdbus_reply_new(struct kdbus_conn *reply_src,
++ struct kdbus_conn *reply_dst,
++ const struct kdbus_msg *msg,
++ struct kdbus_name_entry *name_entry,
++ bool sync);
++
++struct kdbus_reply *kdbus_reply_ref(struct kdbus_reply *r);
++struct kdbus_reply *kdbus_reply_unref(struct kdbus_reply *r);
++
++void kdbus_reply_link(struct kdbus_reply *r);
++void kdbus_reply_unlink(struct kdbus_reply *r);
++
++struct kdbus_reply *kdbus_reply_find(struct kdbus_conn *replying,
++ struct kdbus_conn *reply_dst,
++ u64 cookie);
++
++void kdbus_sync_reply_wakeup(struct kdbus_reply *reply, int err);
++void kdbus_reply_list_scan_work(struct work_struct *work);
++
++#endif /* __KDBUS_REPLY_H */
+diff --git a/ipc/kdbus/util.c b/ipc/kdbus/util.c
+new file mode 100644
+index 0000000..eaa806a
+--- /dev/null
++++ b/ipc/kdbus/util.c
+@@ -0,0 +1,201 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <linux/capability.h>
++#include <linux/cred.h>
++#include <linux/ctype.h>
++#include <linux/err.h>
++#include <linux/file.h>
++#include <linux/slab.h>
++#include <linux/string.h>
++#include <linux/uaccess.h>
++#include <linux/uio.h>
++#include <linux/user_namespace.h>
++
++#include "limits.h"
++#include "util.h"
++
++/**
++ * kdbus_copy_from_user() - copy aligned data from user-space
++ * @dest: target buffer in kernel memory
++ * @user_ptr: user-provided source buffer
++ * @size: memory size to copy from user
++ *
++ * This copies @size bytes from @user_ptr into the kernel, just like
++ * copy_from_user() does. But we enforce an 8-byte alignment and reject any
++ * unaligned user-space pointers.
++ *
++ * Return: 0 on success, negative error code on failure.
++ */
++int kdbus_copy_from_user(void *dest, void __user *user_ptr, size_t size)
++{
++ if (!KDBUS_IS_ALIGNED8((uintptr_t)user_ptr))
++ return -EFAULT;
++
++ if (copy_from_user(dest, user_ptr, size))
++ return -EFAULT;
++
++ return 0;
++}
++
++/**
++ * kdbus_memdup_user() - copy dynamically sized object from user-space
++ * @user_ptr: user-provided source buffer
++ * @sz_min: minimum object size
++ * @sz_max: maximum object size
++ *
++ * This copies a dynamically sized object from user-space into kernel-space. We
++ * require the object to have a 64bit size field at offset 0. We read it out
++ * first, allocate a suitably sized buffer and then copy all data.
++ *
++ * The @sz_min and @sz_max parameters define possible min and max object sizes
++ * so user-space cannot trigger un-bound kernel-space allocations.
++ *
++ * The same alignment-restrictions as described in kdbus_copy_from_user() apply.
++ *
++ * Return: pointer to dynamically allocated copy, or ERR_PTR() on failure.
++ */
++void *kdbus_memdup_user(void __user *user_ptr, size_t sz_min, size_t sz_max)
++{
++ void *ptr;
++ u64 size;
++ int ret;
++
++ ret = kdbus_copy_from_user(&size, user_ptr, sizeof(size));
++ if (ret < 0)
++ return ERR_PTR(ret);
++
++ if (size < sz_min)
++ return ERR_PTR(-EINVAL);
++
++ if (size > sz_max)
++ return ERR_PTR(-EMSGSIZE);
++
++ ptr = memdup_user(user_ptr, size);
++ if (IS_ERR(ptr))
++ return ptr;
++
++ if (*(u64 *)ptr != size) {
++ kfree(ptr);
++ return ERR_PTR(-EINVAL);
++ }
++
++ return ptr;
++}
++
++/**
++ * kdbus_verify_uid_prefix() - verify UID prefix of a user-supplied name
++ * @name: user-supplied name to verify
++ * @user_ns: user-namespace to act in
++ * @kuid: Kernel internal uid of user
++ *
++ * This verifies that the user-supplied name @name has their UID as prefix. This
++ * is the default name-spacing policy we enforce on user-supplied names for
++ * public kdbus entities like buses and endpoints.
++ *
++ * The user must supply names prefixed with "<UID>-", whereas the UID is
++ * interpreted in the user-namespace of the domain. If the user fails to supply
++ * such a prefixed name, we reject it.
++ *
++ * Return: 0 on success, negative error code on failure
++ */
++int kdbus_verify_uid_prefix(const char *name, struct user_namespace *user_ns,
++ kuid_t kuid)
++{
++ uid_t uid;
++ char prefix[16];
++
++ /*
++ * The kuid must have a mapping into the userns of the domain
++ * otherwise do not allow creation of buses nor endpoints.
++ */
++ uid = from_kuid(user_ns, kuid);
++ if (uid == (uid_t) -1)
++ return -EINVAL;
++
++ snprintf(prefix, sizeof(prefix), "%u-", uid);
++ if (strncmp(name, prefix, strlen(prefix)) != 0)
++ return -EINVAL;
++
++ return 0;
++}
++
++/**
++ * kdbus_sanitize_attach_flags() - Sanitize attach flags from user-space
++ * @flags: Attach flags provided by userspace
++ * @attach_flags: A pointer where to store the valid attach flags
++ *
++ * Convert attach-flags provided by user-space into a valid mask. If the mask
++ * is invalid, an error is returned. The sanitized attach flags are stored in
++ * the output parameter.
++ *
++ * Return: 0 on success, negative error on failure.
++ */
++int kdbus_sanitize_attach_flags(u64 flags, u64 *attach_flags)
++{
++ /* 'any' degrades to 'all' for compatibility */
++ if (flags == _KDBUS_ATTACH_ANY)
++ flags = _KDBUS_ATTACH_ALL;
++
++ /* reject unknown attach flags */
++ if (flags & ~_KDBUS_ATTACH_ALL)
++ return -EINVAL;
++
++ *attach_flags = flags;
++ return 0;
++}
++
++/**
++ * kdbus_kvec_set - helper utility to assemble kvec arrays
++ * @kvec: kvec entry to use
++ * @src: Source address to set in @kvec
++ * @len: Number of bytes in @src
++ * @total_len: Pointer to total length variable
++ *
++ * Set @src and @len in @kvec, and increase @total_len by @len.
++ */
++void kdbus_kvec_set(struct kvec *kvec, void *src, size_t len, u64 *total_len)
++{
++ kvec->iov_base = src;
++ kvec->iov_len = len;
++ *total_len += len;
++}
++
++static const char * const zeros = "\0\0\0\0\0\0\0";
++
++/**
++ * kdbus_kvec_pad - conditionally write a padding kvec
++ * @kvec: kvec entry to use
++ * @len: Total length used for kvec array
++ *
++ * Check if the current total byte length of the array in @len is aligned to
++ * 8 bytes. If it isn't, fill @kvec with padding information and increase @len
++ * by the number of bytes stored in @kvec.
++ *
++ * Return: the number of added padding bytes.
++ */
++size_t kdbus_kvec_pad(struct kvec *kvec, u64 *len)
++{
++ size_t pad = KDBUS_ALIGN8(*len) - *len;
++
++ if (!pad)
++ return 0;
++
++ kvec->iov_base = (void *)zeros;
++ kvec->iov_len = pad;
++
++ *len += pad;
++
++ return pad;
++}
+diff --git a/ipc/kdbus/util.h b/ipc/kdbus/util.h
+new file mode 100644
+index 0000000..740b198
+--- /dev/null
++++ b/ipc/kdbus/util.h
+@@ -0,0 +1,74 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++ * Copyright (C) 2013-2015 Daniel Mack <daniel@zonque.org>
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ * Copyright (C) 2013-2015 Linux Foundation
++ * Copyright (C) 2014-2015 Djalal Harouni <tixxdz@opendz.org>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#ifndef __KDBUS_UTIL_H
++#define __KDBUS_UTIL_H
++
++#include <linux/dcache.h>
++#include <linux/ioctl.h>
++
++#include <uapi/linux/kdbus.h>
++
++/* all exported addresses are 64 bit */
++#define KDBUS_PTR(addr) ((void __user *)(uintptr_t)(addr))
++
++/* all exported sizes are 64 bit and data aligned to 64 bit */
++#define KDBUS_ALIGN8(s) ALIGN((s), 8)
++#define KDBUS_IS_ALIGNED8(s) (IS_ALIGNED(s, 8))
++
++/**
++ * kdbus_member_set_user - write a structure member to user memory
++ * @_s: Variable to copy from
++ * @_b: Buffer to write to
++ * @_t: Structure type
++ * @_m: Member name in the passed structure
++ *
++ * Return: the result of copy_to_user()
++ */
++#define kdbus_member_set_user(_s, _b, _t, _m) \
++({ \
++ u64 __user *_sz = \
++ (void __user *)((u8 __user *)(_b) + offsetof(_t, _m)); \
++ copy_to_user(_sz, _s, sizeof(((_t *)0)->_m)); \
++})
++
++/**
++ * kdbus_strhash - calculate a hash
++ * @str: String
++ *
++ * Return: hash value
++ */
++static inline unsigned int kdbus_strhash(const char *str)
++{
++ unsigned long hash = init_name_hash();
++
++ while (*str)
++ hash = partial_name_hash(*str++, hash);
++
++ return end_name_hash(hash);
++}
++
++int kdbus_verify_uid_prefix(const char *name, struct user_namespace *user_ns,
++ kuid_t kuid);
++int kdbus_sanitize_attach_flags(u64 flags, u64 *attach_flags);
++
++int kdbus_copy_from_user(void *dest, void __user *user_ptr, size_t size);
++void *kdbus_memdup_user(void __user *user_ptr, size_t sz_min, size_t sz_max);
++
++struct kvec;
++
++void kdbus_kvec_set(struct kvec *kvec, void *src, size_t len, u64 *total_len);
++size_t kdbus_kvec_pad(struct kvec *kvec, u64 *len);
++
++#endif
+diff --git a/samples/Kconfig b/samples/Kconfig
+index 224ebb4..a4c6b2f 100644
+--- a/samples/Kconfig
++++ b/samples/Kconfig
+@@ -55,6 +55,13 @@ config SAMPLE_KDB
+ Build an example of how to dynamically add the hello
+ command to the kdb shell.
+
++config SAMPLE_KDBUS
++ bool "Build kdbus API example"
++ depends on KDBUS
++ help
++ Build an example of how the kdbus API can be used from
++ userspace.
++
+ config SAMPLE_RPMSG_CLIENT
+ tristate "Build rpmsg client sample -- loadable modules only"
+ depends on RPMSG && m
+diff --git a/samples/Makefile b/samples/Makefile
+index f00257b..f0ad51e 100644
+--- a/samples/Makefile
++++ b/samples/Makefile
+@@ -1,4 +1,5 @@
+ # Makefile for Linux samples code
+
+ obj-$(CONFIG_SAMPLES) += kobject/ kprobes/ trace_events/ livepatch/ \
+- hw_breakpoint/ kfifo/ kdb/ hidraw/ rpmsg/ seccomp/
++ hw_breakpoint/ kfifo/ kdb/ kdbus/ hidraw/ rpmsg/ \
++ seccomp/
+diff --git a/samples/kdbus/.gitignore b/samples/kdbus/.gitignore
+new file mode 100644
+index 0000000..ee07d98
+--- /dev/null
++++ b/samples/kdbus/.gitignore
+@@ -0,0 +1 @@
++kdbus-workers
+diff --git a/samples/kdbus/Makefile b/samples/kdbus/Makefile
+new file mode 100644
+index 0000000..137f842
+--- /dev/null
++++ b/samples/kdbus/Makefile
+@@ -0,0 +1,9 @@
++# kbuild trick to avoid linker error. Can be omitted if a module is built.
++obj- := dummy.o
++
++hostprogs-$(CONFIG_SAMPLE_KDBUS) += kdbus-workers
++
++always := $(hostprogs-y)
++
++HOSTCFLAGS_kdbus-workers.o += -I$(objtree)/usr/include
++HOSTLOADLIBES_kdbus-workers := -lrt
+diff --git a/samples/kdbus/kdbus-api.h b/samples/kdbus/kdbus-api.h
+new file mode 100644
+index 0000000..5ed5907
+--- /dev/null
++++ b/samples/kdbus/kdbus-api.h
+@@ -0,0 +1,114 @@
++#ifndef KDBUS_API_H
++#define KDBUS_API_H
++
++#include <sys/ioctl.h>
++#include <linux/kdbus.h>
++
++#define KDBUS_ALIGN8(l) (((l) + 7) & ~7)
++#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
++#define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
++#define KDBUS_ITEM_NEXT(item) \
++ (typeof(item))(((uint8_t *)item) + KDBUS_ALIGN8((item)->size))
++#define KDBUS_FOREACH(iter, first, _size) \
++ for (iter = (first); \
++ ((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
++ ((uint8_t *)(iter) >= (uint8_t *)(first)); \
++ iter = (void*)(((uint8_t *)iter) + KDBUS_ALIGN8((iter)->size)))
++
++static inline int kdbus_cmd_bus_make(int control_fd, struct kdbus_cmd *cmd)
++{
++ int ret = ioctl(control_fd, KDBUS_CMD_BUS_MAKE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_endpoint_make(int bus_fd, struct kdbus_cmd *cmd)
++{
++ int ret = ioctl(bus_fd, KDBUS_CMD_ENDPOINT_MAKE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_endpoint_update(int ep_fd, struct kdbus_cmd *cmd)
++{
++ int ret = ioctl(ep_fd, KDBUS_CMD_ENDPOINT_UPDATE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_hello(int bus_fd, struct kdbus_cmd_hello *cmd)
++{
++ int ret = ioctl(bus_fd, KDBUS_CMD_HELLO, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_update(int fd, struct kdbus_cmd *cmd)
++{
++ int ret = ioctl(fd, KDBUS_CMD_UPDATE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_byebye(int conn_fd, struct kdbus_cmd *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_BYEBYE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_free(int conn_fd, struct kdbus_cmd_free *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_FREE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_conn_info(int conn_fd, struct kdbus_cmd_info *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_CONN_INFO, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_bus_creator_info(int conn_fd, struct kdbus_cmd_info *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_BUS_CREATOR_INFO, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_list(int fd, struct kdbus_cmd_list *cmd)
++{
++ int ret = ioctl(fd, KDBUS_CMD_LIST, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_send(int conn_fd, struct kdbus_cmd_send *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_SEND, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_recv(int conn_fd, struct kdbus_cmd_recv *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_RECV, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_name_acquire(int conn_fd, struct kdbus_cmd *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_NAME_ACQUIRE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_name_release(int conn_fd, struct kdbus_cmd *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_NAME_RELEASE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_match_add(int conn_fd, struct kdbus_cmd_match *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_MATCH_ADD, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++static inline int kdbus_cmd_match_remove(int conn_fd, struct kdbus_cmd_match *cmd)
++{
++ int ret = ioctl(conn_fd, KDBUS_CMD_MATCH_REMOVE, cmd);
++ return (ret < 0) ? (errno > 0 ? -errno : -EINVAL) : 0;
++}
++
++#endif /* KDBUS_API_H */
+diff --git a/samples/kdbus/kdbus-workers.c b/samples/kdbus/kdbus-workers.c
+new file mode 100644
+index 0000000..d331e01
+--- /dev/null
++++ b/samples/kdbus/kdbus-workers.c
+@@ -0,0 +1,1326 @@
++/*
++ * Copyright (C) 2013-2015 David Herrmann <dh.herrmann@gmail.com>
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++/*
++ * Example: Workers
++ * This program computes prime-numbers based on the sieve of Eratosthenes. The
++ * master sets up a shared memory region and spawns workers which clear out the
++ * non-primes. The master reacts to keyboard input and to client-requests to
++ * control what each worker does. Note that this is in no way meant as efficient
++ * way to compute primes. It should only serve as example how a master/worker
++ * concept can be implemented with kdbus used as control messages.
++ *
++ * The main process is called the 'master'. It creates a new, private bus which
++ * will be used between the master and its workers to communicate. The master
++ * then spawns a fixed number of workers. Whenever a worker dies (detected via
++ * SIGCHLD), the master spawns a new worker. When done, the master waits for all
++ * workers to exit, prints a status report and exits itself.
++ *
++ * The master process does *not* keep track of its workers. Instead, this
++ * example implements a PULL model. That is, the master acquires a well-known
++ * name on the bus which each worker uses to request tasks from the master. If
++ * there are no more tasks, the master will return an empty task-list, which
++ * casues a worker to exit immediately.
++ *
++ * As tasks can be computationally expensive, we support cancellation. Whenever
++ * the master process is interrupted, it will drop its well-known name on the
++ * bus. This causes kdbus to broadcast a name-change notification. The workers
++ * check for broadcast messages regularly and will exit if they receive one.
++ *
++ * This example exists of 4 objects:
++ * * master: The master object contains the context of the master process. This
++ * process manages the prime-context, spawns workers and assigns
++ * prime-ranges to each worker to compute.
++ * The master itself does not do any prime-computations itself.
++ * * child: The child object contains the context of a worker. It inherits the
++ * prime context from its parent (the master) and then creates a new
++ * bus context to request prime-ranges to compute.
++ * * prime: The "prime" object is used to abstract how we compute primes. When
++ * allocated, it prepares a memory region to hold 1 bit for each
++ * natural number up to a fixed maximum ('MAX_PRIMES').
++ * The memory region is backed by a memfd which we share between
++ * processes. Each worker now gets assigned a range of natural
++ * numbers which it clears multiples of off the memory region. The
++ * master process is responsible of distributing all natural numbers
++ * up to the fixed maximum to its workers.
++ * * bus: The bus object is an abstraction of the kdbus API. It is pretty
++ * straightfoward and only manages the connection-fd plus the
++ * memory-mapped pool in a single object.
++ *
++ * This example is in reversed order, which should make it easier to read
++ * top-down, but requires some forward-declarations. Just ignore those.
++ */
++
++#include <ctype.h>
++#include <errno.h>
++#include <fcntl.h>
++#include <linux/memfd.h>
++#include <signal.h>
++#include <stdbool.h>
++#include <stddef.h>
++#include <stdint.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++#include <sys/mman.h>
++#include <sys/poll.h>
++#include <sys/signalfd.h>
++#include <sys/syscall.h>
++#include <sys/time.h>
++#include <sys/wait.h>
++#include <time.h>
++#include <unistd.h>
++#include "kdbus-api.h"
++
++/* FORWARD DECLARATIONS */
++
++#define POOL_SIZE (16 * 1024 * 1024)
++#define MAX_PRIMES (2UL << 24)
++#define WORKER_COUNT (16)
++#define PRIME_STEPS (65536 * 4)
++
++static const char *arg_busname = "example-workers";
++static const char *arg_modname = "kdbus";
++static const char *arg_master = "org.freedesktop.master";
++
++static int err_assert(int r_errno, const char *msg, const char *func, int line,
++ const char *file)
++{
++ r_errno = (r_errno != 0) ? -abs(r_errno) : -EFAULT;
++ if (r_errno < 0) {
++ errno = -r_errno;
++ fprintf(stderr, "ERR: %s: %m (%s:%d in %s)\n",
++ msg, func, line, file);
++ }
++ return r_errno;
++}
++
++#define err_r(_r, _msg) err_assert((_r), (_msg), __func__, __LINE__, __FILE__)
++#define err(_msg) err_r(errno, (_msg))
++
++struct prime;
++struct bus;
++struct master;
++struct child;
++
++struct prime {
++ int fd;
++ uint8_t *area;
++ size_t max;
++ size_t done;
++ size_t status;
++};
++
++static int prime_new(struct prime **out);
++static void prime_free(struct prime *p);
++static bool prime_done(struct prime *p);
++static void prime_consume(struct prime *p, size_t amount);
++static int prime_run(struct prime *p, struct bus *cancel, size_t number);
++static void prime_print(struct prime *p);
++
++struct bus {
++ int fd;
++ uint8_t *pool;
++};
++
++static int bus_open_connection(struct bus **out, uid_t uid, const char *name,
++ uint64_t recv_flags);
++static void bus_close_connection(struct bus *b);
++static void bus_poool_free_slice(struct bus *b, uint64_t offset);
++static int bus_acquire_name(struct bus *b, const char *name);
++static int bus_install_name_loss_match(struct bus *b, const char *name);
++static int bus_poll(struct bus *b);
++static int bus_make(uid_t uid, const char *name);
++
++struct master {
++ size_t n_workers;
++ size_t max_workers;
++
++ int signal_fd;
++ int control_fd;
++
++ struct prime *prime;
++ struct bus *bus;
++};
++
++static int master_new(struct master **out);
++static void master_free(struct master *m);
++static int master_run(struct master *m);
++static int master_poll(struct master *m);
++static int master_handle_stdin(struct master *m);
++static int master_handle_signal(struct master *m);
++static int master_handle_bus(struct master *m);
++static int master_reply(struct master *m, const struct kdbus_msg *msg);
++static int master_waitpid(struct master *m);
++static int master_spawn(struct master *m);
++
++struct child {
++ struct bus *bus;
++ struct prime *prime;
++};
++
++static int child_new(struct child **out, struct prime *p);
++static void child_free(struct child *c);
++static int child_run(struct child *c);
++
++/* END OF FORWARD DECLARATIONS */
++
++/*
++ * This is the main entrypoint of this example. It is pretty straightforward. We
++ * create a master object, run the computation, print a status report and then
++ * exit. Nothing particularly interesting here, so lets look into the master
++ * object...
++ */
++int main(int argc, char **argv)
++{
++ struct master *m = NULL;
++ int r;
++
++ r = master_new(&m);
++ if (r < 0)
++ goto out;
++
++ r = master_run(m);
++ if (r < 0)
++ goto out;
++
++ if (0)
++ prime_print(m->prime);
++
++out:
++ master_free(m);
++ if (r < 0 && r != -EINTR)
++ fprintf(stderr, "failed\n");
++ else
++ fprintf(stderr, "done\n");
++ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
++}
++
++/*
++ * ...this will allocate a new master context. It keeps track of the current
++ * number of children/workers that are running, manages a signalfd to track
++ * SIGCHLD, and creates a private kdbus bus. Afterwards, it opens its connection
++ * to the bus and acquires a well known-name (arg_master).
++ */
++static int master_new(struct master **out)
++{
++ struct master *m;
++ sigset_t smask;
++ int r;
++
++ m = calloc(1, sizeof(*m));
++ if (!m)
++ return err("cannot allocate master");
++
++ m->max_workers = WORKER_COUNT;
++ m->signal_fd = -1;
++ m->control_fd = -1;
++
++ /* Block SIGINT and SIGCHLD signals */
++ sigemptyset(&smask);
++ sigaddset(&smask, SIGINT);
++ sigaddset(&smask, SIGCHLD);
++ sigprocmask(SIG_BLOCK, &smask, NULL);
++
++ m->signal_fd = signalfd(-1, &smask, SFD_CLOEXEC);
++ if (m->signal_fd < 0) {
++ r = err("cannot create signalfd");
++ goto error;
++ }
++
++ r = prime_new(&m->prime);
++ if (r < 0)
++ goto error;
++
++ m->control_fd = bus_make(getuid(), arg_busname);
++ if (m->control_fd < 0) {
++ r = m->control_fd;
++ goto error;
++ }
++
++ /*
++ * Open a bus connection for the master, and require each received
++ * message to have a metadata item of type KDBUS_ITEM_PIDS attached.
++ * The current UID is needed to compute the name of the bus node to
++ * connect to.
++ */
++ r = bus_open_connection(&m->bus, getuid(),
++ arg_busname, KDBUS_ATTACH_PIDS);
++ if (r < 0)
++ goto error;
++
++ /*
++ * Acquire a well-known name on the bus, so children can address
++ * messages to the master using KDBUS_DST_ID_NAME as destination-ID
++ * of messages.
++ */
++ r = bus_acquire_name(m->bus, arg_master);
++ if (r < 0)
++ goto error;
++
++ *out = m;
++ return 0;
++
++error:
++ master_free(m);
++ return r;
++}
++
++/* pretty straightforward destructor of a master object */
++static void master_free(struct master *m)
++{
++ if (!m)
++ return;
++
++ bus_close_connection(m->bus);
++ if (m->control_fd >= 0)
++ close(m->control_fd);
++ prime_free(m->prime);
++ if (m->signal_fd >= 0)
++ close(m->signal_fd);
++ free(m);
++}
++
++static int master_run(struct master *m)
++{
++ int res, r = 0;
++
++ while (!prime_done(m->prime)) {
++ while (m->n_workers < m->max_workers) {
++ r = master_spawn(m);
++ if (r < 0)
++ break;
++ }
++
++ r = master_poll(m);
++ if (r < 0)
++ break;
++ }
++
++ if (r < 0) {
++ bus_close_connection(m->bus);
++ m->bus = NULL;
++ }
++
++ while (m->n_workers > 0) {
++ res = master_poll(m);
++ if (res < 0) {
++ if (m->bus) {
++ bus_close_connection(m->bus);
++ m->bus = NULL;
++ }
++ r = res;
++ }
++ }
++
++ return r == -EINTR ? 0 : r;
++}
++
++static int master_poll(struct master *m)
++{
++ struct pollfd fds[3] = {};
++ int r = 0, n = 0;
++
++ /*
++ * Add stdin, the eventfd and the connection owner file descriptor to
++ * the pollfd table, and handle incoming traffic on the latter in
++ * master_handle_bus().
++ */
++ fds[n].fd = STDIN_FILENO;
++ fds[n++].events = POLLIN;
++ fds[n].fd = m->signal_fd;
++ fds[n++].events = POLLIN;
++ if (m->bus) {
++ fds[n].fd = m->bus->fd;
++ fds[n++].events = POLLIN;
++ }
++
++ r = poll(fds, n, -1);
++ if (r < 0)
++ return err("poll() failed");
++
++ if (fds[0].revents & POLLIN)
++ r = master_handle_stdin(m);
++ else if (fds[0].revents)
++ r = err("ERR/HUP on stdin");
++ if (r < 0)
++ return r;
++
++ if (fds[1].revents & POLLIN)
++ r = master_handle_signal(m);
++ else if (fds[1].revents)
++ r = err("ERR/HUP on signalfd");
++ if (r < 0)
++ return r;
++
++ if (fds[2].revents & POLLIN)
++ r = master_handle_bus(m);
++ else if (fds[2].revents)
++ r = err("ERR/HUP on bus");
++
++ return r;
++}
++
++static int master_handle_stdin(struct master *m)
++{
++ char buf[128];
++ ssize_t l;
++ int r = 0;
++
++ l = read(STDIN_FILENO, buf, sizeof(buf));
++ if (l < 0)
++ return err("cannot read stdin");
++ if (l == 0)
++ return err_r(-EINVAL, "EOF on stdin");
++
++ while (l-- > 0) {
++ switch (buf[l]) {
++ case 'q':
++ /* quit */
++ r = -EINTR;
++ break;
++ case '\n':
++ case ' ':
++ /* ignore */
++ break;
++ default:
++ if (isgraph(buf[l]))
++ fprintf(stderr, "invalid input '%c'\n", buf[l]);
++ else
++ fprintf(stderr, "invalid input 0x%x\n", buf[l]);
++ break;
++ }
++ }
++
++ return r;
++}
++
++static int master_handle_signal(struct master *m)
++{
++ struct signalfd_siginfo val;
++ ssize_t l;
++
++ l = read(m->signal_fd, &val, sizeof(val));
++ if (l < 0)
++ return err("cannot read signalfd");
++ if (l != sizeof(val))
++ return err_r(-EINVAL, "invalid data from signalfd");
++
++ switch (val.ssi_signo) {
++ case SIGCHLD:
++ return master_waitpid(m);
++ case SIGINT:
++ return err_r(-EINTR, "interrupted");
++ default:
++ return err_r(-EINVAL, "caught invalid signal");
++ }
++}
++
++static int master_handle_bus(struct master *m)
++{
++ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
++ const struct kdbus_msg *msg = NULL;
++ const struct kdbus_item *item;
++ const struct kdbus_vec *vec = NULL;
++ int r = 0;
++
++ /*
++ * To receive a message, the KDBUS_CMD_RECV ioctl is used.
++ * It takes an argument of type 'struct kdbus_cmd_recv', which
++ * will contain information on the received message when the call
++ * returns. See kdbus.message(7).
++ */
++ r = kdbus_cmd_recv(m->bus->fd, &recv);
++ /*
++ * EAGAIN is returned when there is no message waiting on this
++ * connection. This is not an error - simply bail out.
++ */
++ if (r == -EAGAIN)
++ return 0;
++ if (r < 0)
++ return err_r(r, "cannot receive message");
++
++ /*
++ * Messages received by a connection are stored inside the connection's
++ * pool, at an offset that has been returned in the 'recv' command
++ * struct above. The value describes the relative offset from the
++ * start address of the pool. A message is described with
++ * 'struct kdbus_msg'. See kdbus.message(7).
++ */
++ msg = (void *)(m->bus->pool + recv.msg.offset);
++
++ /*
++ * A messages describes its actual payload in an array of items.
++ * KDBUS_FOREACH() is a simple iterator that walks such an array.
++ * struct kdbus_msg has a field to denote its total size, which is
++ * needed to determine the number of items in the array.
++ */
++ KDBUS_FOREACH(item, msg->items,
++ msg->size - offsetof(struct kdbus_msg, items)) {
++ /*
++ * An item of type PAYLOAD_OFF describes in-line memory
++ * stored in the pool at a described offset. That offset is
++ * relative to the start address of the message header.
++ * This example program only expects one single item of that
++ * type, remembers the struct kdbus_vec member of the item
++ * when it sees it, and bails out if there is more than one
++ * of them.
++ */
++ if (item->type == KDBUS_ITEM_PAYLOAD_OFF) {
++ if (vec) {
++ r = err_r(-EEXIST,
++ "message with multiple vecs");
++ break;
++ }
++ vec = &item->vec;
++ if (vec->size != 1) {
++ r = err_r(-EINVAL, "invalid message size");
++ break;
++ }
++
++ /*
++ * MEMFDs are transported as items of type PAYLOAD_MEMFD.
++ * If such an item is attached, a new file descriptor was
++ * installed into the task when KDBUS_CMD_RECV was called, and
++ * its number is stored in item->memfd.fd.
++ * Implementers *must* handle this item type and close the
++ * file descriptor when no longer needed in order to prevent
++ * file descriptor exhaustion. This example program just bails
++ * out with an error in this case, as memfds are not expected
++ * in this context.
++ */
++ } else if (item->type == KDBUS_ITEM_PAYLOAD_MEMFD) {
++ r = err_r(-EINVAL, "message with memfd");
++ break;
++ }
++ }
++ if (r < 0)
++ goto exit;
++ if (!vec) {
++ r = err_r(-EINVAL, "empty message");
++ goto exit;
++ }
++
++ switch (*((const uint8_t *)msg + vec->offset)) {
++ case 'r': {
++ r = master_reply(m, msg);
++ break;
++ }
++ default:
++ r = err_r(-EINVAL, "invalid message type");
++ break;
++ }
++
++exit:
++ /*
++ * We are done with the memory slice that was given to us through
++ * recv.msg.offset. Tell the kernel it can use it for other content
++ * in the future. See kdbus.pool(7).
++ */
++ bus_poool_free_slice(m->bus, recv.msg.offset);
++ return r;
++}
++
++static int master_reply(struct master *m, const struct kdbus_msg *msg)
++{
++ struct kdbus_cmd_send cmd;
++ struct kdbus_item *item;
++ struct kdbus_msg *reply;
++ size_t size, status, p[2];
++ int r;
++
++ /*
++ * This functions sends a message over kdbus. To do this, it uses the
++ * KDBUS_CMD_SEND ioctl, which takes a command struct argument of type
++ * 'struct kdbus_cmd_send'. This struct stores a pointer to the actual
++ * message to send. See kdbus.message(7).
++ */
++ p[0] = m->prime->done;
++ p[1] = prime_done(m->prime) ? 0 : PRIME_STEPS;
++
++ size = sizeof(*reply);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++
++ /* Prepare the message to send */
++ reply = alloca(size);
++ memset(reply, 0, size);
++ reply->size = size;
++
++ /* Each message has a cookie that can be used to send replies */
++ reply->cookie = 1;
++
++ /* The payload_type is arbitrary, but it must be non-zero */
++ reply->payload_type = 0xdeadbeef;
++
++ /*
++ * We are sending a reply. Let the kernel know the cookie of the
++ * message we are replying to.
++ */
++ reply->cookie_reply = msg->cookie;
++
++ /*
++ * Messages can either be directed to a well-known name (stored as
++ * string) or to a unique name (stored as number). This example does
++ * the latter. If the message would be directed to a well-known name
++ * instead, the message's dst_id field would be set to
++ * KDBUS_DST_ID_NAME, and the name would be attaches in an item of type
++ * KDBUS_ITEM_DST_NAME. See below for an example, and also refer to
++ * kdbus.message(7).
++ */
++ reply->dst_id = msg->src_id;
++
++ /* Our message has exactly one item to store its payload */
++ item = reply->items;
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t)p;
++ item->vec.size = sizeof(p);
++
++ /*
++ * Now prepare the command struct, and reference the message we want
++ * to send.
++ */
++ memset(&cmd, 0, sizeof(cmd));
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)reply;
++
++ /*
++ * Finally, employ the command on the connection owner
++ * file descriptor.
++ */
++ r = kdbus_cmd_send(m->bus->fd, &cmd);
++ if (r < 0)
++ return err_r(r, "cannot send reply");
++
++ if (p[1]) {
++ prime_consume(m->prime, p[1]);
++ status = m->prime->done * 10000 / m->prime->max;
++ if (status != m->prime->status) {
++ m->prime->status = status;
++ fprintf(stderr, "status: %7.3lf%%\n",
++ (double)status / 100);
++ }
++ }
++
++ return 0;
++}
++
++static int master_waitpid(struct master *m)
++{
++ pid_t pid;
++ int r;
++
++ while ((pid = waitpid(-1, &r, WNOHANG)) > 0) {
++ if (m->n_workers > 0)
++ --m->n_workers;
++ if (!WIFEXITED(r))
++ r = err_r(-EINVAL, "child died unexpectedly");
++ else if (WEXITSTATUS(r) != 0)
++ r = err_r(-WEXITSTATUS(r), "child failed");
++ }
++
++ return r;
++}
++
++static int master_spawn(struct master *m)
++{
++ struct child *c = NULL;
++ struct prime *p = NULL;
++ pid_t pid;
++ int r;
++
++ /* Spawn off one child and call child_run() inside it */
++
++ pid = fork();
++ if (pid < 0)
++ return err("cannot fork");
++ if (pid > 0) {
++ /* parent */
++ ++m->n_workers;
++ return 0;
++ }
++
++ /* child */
++
++ p = m->prime;
++ m->prime = NULL;
++ master_free(m);
++
++ r = child_new(&c, p);
++ if (r < 0)
++ goto exit;
++
++ r = child_run(c);
++
++exit:
++ child_free(c);
++ exit(abs(r));
++}
++
++static int child_new(struct child **out, struct prime *p)
++{
++ struct child *c;
++ int r;
++
++ c = calloc(1, sizeof(*c));
++ if (!c)
++ return err("cannot allocate child");
++
++ c->prime = p;
++
++ /*
++ * Open a connection to the bus and require each received message to
++ * carry a list of the well-known names the sendind connection currently
++ * owns. The current UID is needed in order to determine the name of the
++ * bus node to connect to.
++ */
++ r = bus_open_connection(&c->bus, getuid(),
++ arg_busname, KDBUS_ATTACH_NAMES);
++ if (r < 0)
++ goto error;
++
++ /*
++ * Install a kdbus match so the child's connection gets notified when
++ * the master loses its well-known name.
++ */
++ r = bus_install_name_loss_match(c->bus, arg_master);
++ if (r < 0)
++ goto error;
++
++ *out = c;
++ return 0;
++
++error:
++ child_free(c);
++ return r;
++}
++
++static void child_free(struct child *c)
++{
++ if (!c)
++ return;
++
++ bus_close_connection(c->bus);
++ prime_free(c->prime);
++ free(c);
++}
++
++static int child_run(struct child *c)
++{
++ struct kdbus_cmd_send cmd;
++ struct kdbus_item *item;
++ struct kdbus_vec *vec = NULL;
++ struct kdbus_msg *msg;
++ struct timespec spec;
++ size_t n, steps, size;
++ int r = 0;
++
++ /*
++ * Let's send a message to the master and ask for work. To do this,
++ * we use the KDBUS_CMD_SEND ioctl, which takes an argument of type
++ * 'struct kdbus_cmd_send'. This struct stores a pointer to the actual
++ * message to send. See kdbus.message(7).
++ */
++ size = sizeof(*msg);
++ size += KDBUS_ITEM_SIZE(strlen(arg_master) + 1);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++
++ msg = alloca(size);
++ memset(msg, 0, size);
++ msg->size = size;
++
++ /*
++ * Tell the kernel that we expect a reply to this message. This means
++ * that
++ *
++ * a) The remote peer will gain temporary permission to talk to us
++ * even if it would not be allowed to normally.
++ *
++ * b) A timeout value is required.
++ *
++ * For asynchronous send commands, if no reply is received, we will
++ * get a kernel notification with an item of type
++ * KDBUS_ITEM_REPLY_TIMEOUT attached.
++ *
++ * For synchronous send commands (which this example does), the
++ * ioctl will block until a reply is received or the timeout is
++ * exceeded.
++ */
++ msg->flags = KDBUS_MSG_EXPECT_REPLY;
++
++ /* Set our cookie. Replies must use this cookie to send their reply. */
++ msg->cookie = 1;
++
++ /* The payload_type is arbitrary, but it must be non-zero */
++ msg->payload_type = 0xdeadbeef;
++
++ /*
++ * We are sending our message to the current owner of a well-known
++ * name. This makes an item of type KDBUS_ITEM_DST_NAME mandatory.
++ */
++ msg->dst_id = KDBUS_DST_ID_NAME;
++
++ /*
++ * Set the reply timeout to 5 seconds. Timeouts are always set in
++ * absolute timestamps, based con CLOCK_MONOTONIC. See kdbus.message(7).
++ */
++ clock_gettime(CLOCK_MONOTONIC_COARSE, &spec);
++ msg->timeout_ns += (5 + spec.tv_sec) * 1000ULL * 1000ULL * 1000ULL;
++ msg->timeout_ns += spec.tv_nsec;
++
++ /*
++ * Fill the appended items. First, set the well-known name of the
++ * destination we want to talk to.
++ */
++ item = msg->items;
++ item->type = KDBUS_ITEM_DST_NAME;
++ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(arg_master) + 1;
++ strcpy(item->str, arg_master);
++
++ /*
++ * The 2nd item contains a vector to memory we want to send. It
++ * can be content of any type. In our case, we're sending a one-byte
++ * string only. The memory referenced by this item will be copied into
++ * the pool of the receiver connection, and does not need to be valid
++ * after the command is employed.
++ */
++ item = KDBUS_ITEM_NEXT(item);
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t)"r";
++ item->vec.size = 1;
++
++ /* Set up the command struct and reference the message we prepared */
++ memset(&cmd, 0, sizeof(cmd));
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ /*
++ * The send commands knows a mode in which it will block until a
++ * reply to a message is received. This example uses that mode.
++ * The pool offset to the received reply will be stored in the command
++ * struct after the send command returned. See below.
++ */
++ cmd.flags = KDBUS_SEND_SYNC_REPLY;
++
++ /*
++ * Finally, employ the command on the connection owner
++ * file descriptor.
++ */
++ r = kdbus_cmd_send(c->bus->fd, &cmd);
++ if (r == -ESRCH || r == -EPIPE || r == -ECONNRESET)
++ return 0;
++ if (r < 0)
++ return err_r(r, "cannot send request to master");
++
++ /*
++ * The command was sent with the KDBUS_SEND_SYNC_REPLY flag set,
++ * and returned successfully, which means that cmd.reply.offset now
++ * points to a message inside our connection's pool where the reply
++ * is found. This is equivalent to receiving the reply with
++ * KDBUS_CMD_RECV, but it doesn't require waiting for the reply with
++ * poll() and also saves the ioctl to receive the message.
++ */
++ msg = (void *)(c->bus->pool + cmd.reply.offset);
++
++ /*
++ * A messages describes its actual payload in an array of items.
++ * KDBUS_FOREACH() is a simple iterator that walks such an array.
++ * struct kdbus_msg has a field to denote its total size, which is
++ * needed to determine the number of items in the array.
++ */
++ KDBUS_FOREACH(item, msg->items,
++ msg->size - offsetof(struct kdbus_msg, items)) {
++ /*
++ * An item of type PAYLOAD_OFF describes in-line memory
++ * stored in the pool at a described offset. That offset is
++ * relative to the start address of the message header.
++ * This example program only expects one single item of that
++ * type, remembers the struct kdbus_vec member of the item
++ * when it sees it, and bails out if there is more than one
++ * of them.
++ */
++ if (item->type == KDBUS_ITEM_PAYLOAD_OFF) {
++ if (vec) {
++ r = err_r(-EEXIST,
++ "message with multiple vecs");
++ break;
++ }
++ vec = &item->vec;
++ if (vec->size != 2 * sizeof(size_t)) {
++ r = err_r(-EINVAL, "invalid message size");
++ break;
++ }
++ /*
++ * MEMFDs are transported as items of type PAYLOAD_MEMFD.
++ * If such an item is attached, a new file descriptor was
++ * installed into the task when KDBUS_CMD_RECV was called, and
++ * its number is stored in item->memfd.fd.
++ * Implementers *must* handle this item type close the
++ * file descriptor when no longer needed in order to prevent
++ * file descriptor exhaustion. This example program just bails
++ * out with an error in this case, as memfds are not expected
++ * in this context.
++ */
++ } else if (item->type == KDBUS_ITEM_PAYLOAD_MEMFD) {
++ r = err_r(-EINVAL, "message with memfd");
++ break;
++ }
++ }
++ if (r < 0)
++ goto exit;
++ if (!vec) {
++ r = err_r(-EINVAL, "empty message");
++ goto exit;
++ }
++
++ n = ((size_t *)((const uint8_t *)msg + vec->offset))[0];
++ steps = ((size_t *)((const uint8_t *)msg + vec->offset))[1];
++
++ while (steps-- > 0) {
++ ++n;
++ r = prime_run(c->prime, c->bus, n);
++ if (r < 0)
++ break;
++ r = bus_poll(c->bus);
++ if (r != 0) {
++ r = r < 0 ? r : -EINTR;
++ break;
++ }
++ }
++
++exit:
++ /*
++ * We are done with the memory slice that was given to us through
++ * cmd.reply.offset. Tell the kernel it can use it for other content
++ * in the future. See kdbus.pool(7).
++ */
++ bus_poool_free_slice(c->bus, cmd.reply.offset);
++ return r;
++}
++
++/*
++ * Prime Computation
++ *
++ */
++
++static int prime_new(struct prime **out)
++{
++ struct prime *p;
++ int r;
++
++ p = calloc(1, sizeof(*p));
++ if (!p)
++ return err("cannot allocate prime memory");
++
++ p->fd = -1;
++ p->area = MAP_FAILED;
++ p->max = MAX_PRIMES;
++
++ /*
++ * Prepare and map a memfd to store the bit-fields for the number
++ * ranges we want to perform the prime detection on.
++ */
++ p->fd = syscall(__NR_memfd_create, "prime-area", MFD_CLOEXEC);
++ if (p->fd < 0) {
++ r = err("cannot create memfd");
++ goto error;
++ }
++
++ r = ftruncate(p->fd, p->max / 8 + 1);
++ if (r < 0) {
++ r = err("cannot ftruncate area");
++ goto error;
++ }
++
++ p->area = mmap(NULL, p->max / 8 + 1, PROT_READ | PROT_WRITE,
++ MAP_SHARED, p->fd, 0);
++ if (p->area == MAP_FAILED) {
++ r = err("cannot mmap memfd");
++ goto error;
++ }
++
++ *out = p;
++ return 0;
++
++error:
++ prime_free(p);
++ return r;
++}
++
++static void prime_free(struct prime *p)
++{
++ if (!p)
++ return;
++
++ if (p->area != MAP_FAILED)
++ munmap(p->area, p->max / 8 + 1);
++ if (p->fd >= 0)
++ close(p->fd);
++ free(p);
++}
++
++static bool prime_done(struct prime *p)
++{
++ return p->done >= p->max;
++}
++
++static void prime_consume(struct prime *p, size_t amount)
++{
++ p->done += amount;
++}
++
++static int prime_run(struct prime *p, struct bus *cancel, size_t number)
++{
++ size_t i, n = 0;
++ int r;
++
++ if (number < 2 || number > 65535)
++ return 0;
++
++ for (i = number * number;
++ i < p->max && i > number;
++ i += number) {
++ p->area[i / 8] |= 1 << (i % 8);
++
++ if (!(++n % (1 << 20))) {
++ r = bus_poll(cancel);
++ if (r != 0)
++ return r < 0 ? r : -EINTR;
++ }
++ }
++
++ return 0;
++}
++
++static void prime_print(struct prime *p)
++{
++ size_t i, l = 0;
++
++ fprintf(stderr, "PRIMES:");
++ for (i = 0; i < p->max; ++i) {
++ if (!(p->area[i / 8] & (1 << (i % 8))))
++ fprintf(stderr, "%c%7zu", !(l++ % 16) ? '\n' : ' ', i);
++ }
++ fprintf(stderr, "\nEND\n");
++}
++
++static int bus_open_connection(struct bus **out, uid_t uid, const char *name,
++ uint64_t recv_flags)
++{
++ struct kdbus_cmd_hello hello;
++ char path[128];
++ struct bus *b;
++ int r;
++
++ /*
++ * The 'bus' object is our representation of a kdbus connection which
++ * stores two details: the connection owner file descriptor, and the
++ * mmap()ed memory of its associated pool. See kdbus.connection(7) and
++ * kdbus.pool(7).
++ */
++ b = calloc(1, sizeof(*b));
++ if (!b)
++ return err("cannot allocate bus memory");
++
++ b->fd = -1;
++ b->pool = MAP_FAILED;
++
++ /* Compute the name of the bus node to connect to. */
++ snprintf(path, sizeof(path), "/sys/fs/%s/%lu-%s/bus",
++ arg_modname, (unsigned long)uid, name);
++ b->fd = open(path, O_RDWR | O_CLOEXEC);
++ if (b->fd < 0) {
++ r = err("cannot open bus");
++ goto error;
++ }
++
++ /*
++ * To make a connection to the bus, the KDBUS_CMD_HELLO ioctl is used.
++ * It takes an argument of type 'struct kdbus_cmd_hello'.
++ */
++ memset(&hello, 0, sizeof(hello));
++ hello.size = sizeof(hello);
++
++ /*
++ * Specify a mask of metadata attach flags, describing metadata items
++ * that this new connection allows to be sent.
++ */
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++
++ /*
++ * Specify a mask of metadata attach flags, describing metadata items
++ * that this new connection wants to be receive along with each message.
++ */
++ hello.attach_flags_recv = recv_flags;
++
++ /*
++ * A connection may choose the size of its pool, but the number has to
++ * comply with two rules: a) it must be greater than 0, and b) it must
++ * be a mulitple of PAGE_SIZE. See kdbus.pool(7).
++ */
++ hello.pool_size = POOL_SIZE;
++
++ /*
++ * Now employ the command on the file descriptor opened above.
++ * This command will turn the file descriptor into a connection-owner
++ * file descriptor that controls the life-time of the connection; once
++ * it's closed, the connection is shut down.
++ */
++ r = kdbus_cmd_hello(b->fd, &hello);
++ if (r < 0) {
++ err_r(r, "HELLO failed");
++ goto error;
++ }
++
++ bus_poool_free_slice(b, hello.offset);
++
++ /*
++ * Map the pool of the connection. Its size has been set in the
++ * command struct above. See kdbus.pool(7).
++ */
++ b->pool = mmap(NULL, POOL_SIZE, PROT_READ, MAP_SHARED, b->fd, 0);
++ if (b->pool == MAP_FAILED) {
++ r = err("cannot mmap pool");
++ goto error;
++ }
++
++ *out = b;
++ return 0;
++
++error:
++ bus_close_connection(b);
++ return r;
++}
++
++static void bus_close_connection(struct bus *b)
++{
++ if (!b)
++ return;
++
++ /*
++ * A bus connection is closed by simply calling close() on the
++ * connection owner file descriptor. The unique name and all owned
++ * well-known names of the conneciton will disappear.
++ * See kdbus.connection(7).
++ */
++ if (b->pool != MAP_FAILED)
++ munmap(b->pool, POOL_SIZE);
++ if (b->fd >= 0)
++ close(b->fd);
++ free(b);
++}
++
++static void bus_poool_free_slice(struct bus *b, uint64_t offset)
++{
++ struct kdbus_cmd_free cmd = {
++ .size = sizeof(cmd),
++ .offset = offset,
++ };
++ int r;
++
++ /*
++ * Once we're done with a piece of pool memory that was returned
++ * by a command, we have to call the KDBUS_CMD_FREE ioctl on it so it
++ * can be reused. The command takes an argument of type
++ * 'struct kdbus_cmd_free', in which the pool offset of the slice to
++ * free is stored. The ioctl is employed on the connection owner
++ * file descriptor. See kdbus.pool(7),
++ */
++ r = kdbus_cmd_free(b->fd, &cmd);
++ if (r < 0)
++ err_r(r, "cannot free pool slice");
++}
++
++static int bus_acquire_name(struct bus *b, const char *name)
++{
++ struct kdbus_item *item;
++ struct kdbus_cmd *cmd;
++ size_t size;
++ int r;
++
++ /*
++ * This function acquires a well-known name on the bus through the
++ * KDBUS_CMD_NAME_ACQUIRE ioctl. This ioctl takes an argument of type
++ * 'struct kdbus_cmd', which is assembled below. See kdbus.name(7).
++ */
++ size = sizeof(*cmd);
++ size += KDBUS_ITEM_SIZE(strlen(name) + 1);
++
++ cmd = alloca(size);
++ memset(cmd, 0, size);
++ cmd->size = size;
++
++ /*
++ * The command requires an item of type KDBUS_ITEM_NAME, and its
++ * content must be a valid bus name.
++ */
++ item = cmd->items;
++ item->type = KDBUS_ITEM_NAME;
++ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
++ strcpy(item->str, name);
++
++ /*
++ * Employ the command on the connection owner file descriptor.
++ */
++ r = kdbus_cmd_name_acquire(b->fd, cmd);
++ if (r < 0)
++ return err_r(r, "cannot acquire name");
++
++ return 0;
++}
++
++static int bus_install_name_loss_match(struct bus *b, const char *name)
++{
++ struct kdbus_cmd_match *match;
++ struct kdbus_item *item;
++ size_t size;
++ int r;
++
++ /*
++ * In order to install a match for signal messages, we have to
++ * assemble a 'struct kdbus_cmd_match' and use it along with the
++ * KDBUS_CMD_MATCH_ADD ioctl. See kdbus.match(7).
++ */
++ size = sizeof(*match);
++ size += KDBUS_ITEM_SIZE(sizeof(item->name_change) + strlen(name) + 1);
++
++ match = alloca(size);
++ memset(match, 0, size);
++ match->size = size;
++
++ /*
++ * A match is comprised of many 'rules', each of which describes a
++ * mandatory detail of the message. All rules of a match must be
++ * satified in order to make a message pass.
++ */
++ item = match->items;
++
++ /*
++ * In this case, we're interested in notifications that inform us
++ * about a well-known name being removed from the bus.
++ */
++ item->type = KDBUS_ITEM_NAME_REMOVE;
++ item->size = KDBUS_ITEM_HEADER_SIZE +
++ sizeof(item->name_change) + strlen(name) + 1;
++
++ /*
++ * We could limit the match further and require a specific unique-ID
++ * to be the new or the old owner of the name. In this case, however,
++ * we don't, and allow 'any' id.
++ */
++ item->name_change.old_id.id = KDBUS_MATCH_ID_ANY;
++ item->name_change.new_id.id = KDBUS_MATCH_ID_ANY;
++
++ /* Copy in the well-known name we're interested in */
++ strcpy(item->name_change.name, name);
++
++ /*
++ * Add the match through the KDBUS_CMD_MATCH_ADD ioctl, employed on
++ * the connection owner fd.
++ */
++ r = kdbus_cmd_match_add(b->fd, match);
++ if (r < 0)
++ return err_r(r, "cannot add match");
++
++ return 0;
++}
++
++static int bus_poll(struct bus *b)
++{
++ struct pollfd fds[1] = {};
++ int r;
++
++ /*
++ * A connection endpoint supports poll() and will wake-up the
++ * task with POLLIN set once a message has arrived.
++ */
++ fds[0].fd = b->fd;
++ fds[0].events = POLLIN;
++ r = poll(fds, sizeof(fds) / sizeof(*fds), 0);
++ if (r < 0)
++ return err("cannot poll bus");
++ return !!(fds[0].revents & POLLIN);
++}
++
++static int bus_make(uid_t uid, const char *name)
++{
++ struct kdbus_item *item;
++ struct kdbus_cmd *make;
++ char path[128], busname[128];
++ size_t size;
++ int r, fd;
++
++ /*
++ * Compute the full path to the 'control' node. 'arg_modname' may be
++ * set to a different value than 'kdbus' for development purposes.
++ * The 'control' node is the primary entry point to kdbus that must be
++ * used in order to create a bus. See kdbus(7) and kdbus.bus(7).
++ */
++ snprintf(path, sizeof(path), "/sys/fs/%s/control", arg_modname);
++
++ /*
++ * Compute the bus name. A valid bus name must always be prefixed with
++ * the EUID of the currently running process in order to avoid name
++ * conflicts. See kdbus.bus(7).
++ */
++ snprintf(busname, sizeof(busname), "%lu-%s", (unsigned long)uid, name);
++
++ fd = open(path, O_RDWR | O_CLOEXEC);
++ if (fd < 0)
++ return err("cannot open control file");
++
++ /*
++ * The KDBUS_CMD_BUS_MAKE ioctl takes an argument of type
++ * 'struct kdbus_cmd', and expects at least two items attached to
++ * it: one to decribe the bloom parameters to be propagated to
++ * connections of the bus, and the name of the bus that was computed
++ * above. Assemble this struct now, and fill it with values.
++ */
++ size = sizeof(*make);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_parameter));
++ size += KDBUS_ITEM_SIZE(strlen(busname) + 1);
++
++ make = alloca(size);
++ memset(make, 0, size);
++ make->size = size;
++
++ /*
++ * Each item has a 'type' and 'size' field, and must be stored at an
++ * 8-byte aligned address. The KDBUS_ITEM_NEXT macro is used to advance
++ * the pointer. See kdbus.item(7) for more details.
++ */
++ item = make->items;
++ item->type = KDBUS_ITEM_BLOOM_PARAMETER;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(item->bloom_parameter);
++ item->bloom_parameter.size = 8;
++ item->bloom_parameter.n_hash = 1;
++
++ /* The name of the new bus is stored in the next item. */
++ item = KDBUS_ITEM_NEXT(item);
++ item->type = KDBUS_ITEM_MAKE_NAME;
++ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(busname) + 1;
++ strcpy(item->str, busname);
++
++ /*
++ * Now create the bus via the KDBUS_CMD_BUS_MAKE ioctl and return the
++ * fd that was used back to the caller of this function. This fd is now
++ * called a 'bus owner file descriptor', and it controls the life-time
++ * of the newly created bus; once the file descriptor is closed, the
++ * bus goes away, and all connections are shut down. See kdbus.bus(7).
++ */
++ r = kdbus_cmd_bus_make(fd, make);
++ if (r < 0) {
++ err_r(r, "cannot make bus");
++ close(fd);
++ return r;
++ }
++
++ return fd;
++}
+diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
+index 4e51122..7b51cce 100644
+--- a/tools/testing/selftests/Makefile
++++ b/tools/testing/selftests/Makefile
+@@ -5,6 +5,7 @@ TARGETS += exec
+ TARGETS += firmware
+ TARGETS += ftrace
+ TARGETS += kcmp
++TARGETS += kdbus
+ TARGETS += memfd
+ TARGETS += memory-hotplug
+ TARGETS += mount
+diff --git a/tools/testing/selftests/kdbus/.gitignore b/tools/testing/selftests/kdbus/.gitignore
+new file mode 100644
+index 0000000..d3ef42f
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/.gitignore
+@@ -0,0 +1 @@
++kdbus-test
+diff --git a/tools/testing/selftests/kdbus/Makefile b/tools/testing/selftests/kdbus/Makefile
+new file mode 100644
+index 0000000..de8242f
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/Makefile
+@@ -0,0 +1,48 @@
++CFLAGS += -I../../../../usr/include/
++CFLAGS += -I../../../../samples/kdbus/
++CFLAGS += -I../../../../include/uapi/
++CFLAGS += -std=gnu99
++CFLAGS += -DKBUILD_MODNAME=\"kdbus\" -D_GNU_SOURCE
++LDLIBS = -pthread -lcap -lm
++
++OBJS= \
++ kdbus-enum.o \
++ kdbus-util.o \
++ kdbus-test.o \
++ kdbus-test.o \
++ test-activator.o \
++ test-attach-flags.o \
++ test-benchmark.o \
++ test-bus.o \
++ test-chat.o \
++ test-connection.o \
++ test-daemon.o \
++ test-endpoint.o \
++ test-fd.o \
++ test-free.o \
++ test-match.o \
++ test-message.o \
++ test-metadata-ns.o \
++ test-monitor.o \
++ test-names.o \
++ test-policy.o \
++ test-policy-ns.o \
++ test-policy-priv.o \
++ test-sync.o \
++ test-timeout.o
++
++all: kdbus-test
++
++include ../lib.mk
++
++%.o: %.c
++ $(CC) $(CFLAGS) -c $< -o $@
++
++kdbus-test: $(OBJS)
++ $(CC) $(CFLAGS) $^ $(LDLIBS) -o $@
++
++run_tests:
++ ./kdbus-test --tap
++
++clean:
++ rm -f *.o kdbus-test
+diff --git a/tools/testing/selftests/kdbus/kdbus-enum.c b/tools/testing/selftests/kdbus/kdbus-enum.c
+new file mode 100644
+index 0000000..4f1e579
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/kdbus-enum.c
+@@ -0,0 +1,94 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++struct kdbus_enum_table {
++ long long id;
++ const char *name;
++};
++
++#define TABLE(what) static struct kdbus_enum_table kdbus_table_##what[]
++#define ENUM(_id) { .id = _id, .name = STRINGIFY(_id) }
++#define LOOKUP(what) \
++ const char *enum_##what(long long id) \
++ { \
++ for (size_t i = 0; i < ELEMENTSOF(kdbus_table_##what); i++) \
++ if (id == kdbus_table_##what[i].id) \
++ return kdbus_table_##what[i].name; \
++ return "UNKNOWN"; \
++ }
++
++TABLE(CMD) = {
++ ENUM(KDBUS_CMD_BUS_MAKE),
++ ENUM(KDBUS_CMD_ENDPOINT_MAKE),
++ ENUM(KDBUS_CMD_HELLO),
++ ENUM(KDBUS_CMD_SEND),
++ ENUM(KDBUS_CMD_RECV),
++ ENUM(KDBUS_CMD_LIST),
++ ENUM(KDBUS_CMD_NAME_RELEASE),
++ ENUM(KDBUS_CMD_CONN_INFO),
++ ENUM(KDBUS_CMD_MATCH_ADD),
++ ENUM(KDBUS_CMD_MATCH_REMOVE),
++};
++LOOKUP(CMD);
++
++TABLE(MSG) = {
++ ENUM(_KDBUS_ITEM_NULL),
++ ENUM(KDBUS_ITEM_PAYLOAD_VEC),
++ ENUM(KDBUS_ITEM_PAYLOAD_OFF),
++ ENUM(KDBUS_ITEM_PAYLOAD_MEMFD),
++ ENUM(KDBUS_ITEM_FDS),
++ ENUM(KDBUS_ITEM_BLOOM_PARAMETER),
++ ENUM(KDBUS_ITEM_BLOOM_FILTER),
++ ENUM(KDBUS_ITEM_DST_NAME),
++ ENUM(KDBUS_ITEM_MAKE_NAME),
++ ENUM(KDBUS_ITEM_ATTACH_FLAGS_SEND),
++ ENUM(KDBUS_ITEM_ATTACH_FLAGS_RECV),
++ ENUM(KDBUS_ITEM_ID),
++ ENUM(KDBUS_ITEM_NAME),
++ ENUM(KDBUS_ITEM_TIMESTAMP),
++ ENUM(KDBUS_ITEM_CREDS),
++ ENUM(KDBUS_ITEM_PIDS),
++ ENUM(KDBUS_ITEM_AUXGROUPS),
++ ENUM(KDBUS_ITEM_OWNED_NAME),
++ ENUM(KDBUS_ITEM_TID_COMM),
++ ENUM(KDBUS_ITEM_PID_COMM),
++ ENUM(KDBUS_ITEM_EXE),
++ ENUM(KDBUS_ITEM_CMDLINE),
++ ENUM(KDBUS_ITEM_CGROUP),
++ ENUM(KDBUS_ITEM_CAPS),
++ ENUM(KDBUS_ITEM_SECLABEL),
++ ENUM(KDBUS_ITEM_AUDIT),
++ ENUM(KDBUS_ITEM_CONN_DESCRIPTION),
++ ENUM(KDBUS_ITEM_NAME_ADD),
++ ENUM(KDBUS_ITEM_NAME_REMOVE),
++ ENUM(KDBUS_ITEM_NAME_CHANGE),
++ ENUM(KDBUS_ITEM_ID_ADD),
++ ENUM(KDBUS_ITEM_ID_REMOVE),
++ ENUM(KDBUS_ITEM_REPLY_TIMEOUT),
++ ENUM(KDBUS_ITEM_REPLY_DEAD),
++};
++LOOKUP(MSG);
++
++TABLE(PAYLOAD) = {
++ ENUM(KDBUS_PAYLOAD_KERNEL),
++ ENUM(KDBUS_PAYLOAD_DBUS),
++};
++LOOKUP(PAYLOAD);
+diff --git a/tools/testing/selftests/kdbus/kdbus-enum.h b/tools/testing/selftests/kdbus/kdbus-enum.h
+new file mode 100644
+index 0000000..a67cec3
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/kdbus-enum.h
+@@ -0,0 +1,14 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++#pragma once
++
++const char *enum_CMD(long long id);
++const char *enum_MSG(long long id);
++const char *enum_MATCH(long long id);
++const char *enum_PAYLOAD(long long id);
+diff --git a/tools/testing/selftests/kdbus/kdbus-test.c b/tools/testing/selftests/kdbus/kdbus-test.c
+new file mode 100644
+index 0000000..a43674c
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/kdbus-test.c
+@@ -0,0 +1,923 @@
++#include <errno.h>
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <time.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <assert.h>
++#include <getopt.h>
++#include <stdbool.h>
++#include <signal.h>
++#include <sys/mount.h>
++#include <sys/prctl.h>
++#include <sys/wait.h>
++#include <sys/syscall.h>
++#include <sys/eventfd.h>
++#include <linux/sched.h>
++
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++enum {
++ TEST_CREATE_BUS = 1 << 0,
++ TEST_CREATE_CONN = 1 << 1,
++};
++
++struct kdbus_test {
++ const char *name;
++ const char *desc;
++ int (*func)(struct kdbus_test_env *env);
++ unsigned int flags;
++};
++
++struct kdbus_test_args {
++ bool mntns;
++ bool pidns;
++ bool userns;
++ char *uid_map;
++ char *gid_map;
++ int loop;
++ int wait;
++ int fork;
++ int tap_output;
++ char *module;
++ char *root;
++ char *test;
++ char *busname;
++ char *mask_param_path;
++};
++
++static const struct kdbus_test tests[] = {
++ {
++ .name = "bus-make",
++ .desc = "bus make functions",
++ .func = kdbus_test_bus_make,
++ .flags = 0,
++ },
++ {
++ .name = "hello",
++ .desc = "the HELLO command",
++ .func = kdbus_test_hello,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "byebye",
++ .desc = "the BYEBYE command",
++ .func = kdbus_test_byebye,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "chat",
++ .desc = "a chat pattern",
++ .func = kdbus_test_chat,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "daemon",
++ .desc = "a simple daemon",
++ .func = kdbus_test_daemon,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "fd-passing",
++ .desc = "file descriptor passing",
++ .func = kdbus_test_fd_passing,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "endpoint",
++ .desc = "custom endpoint",
++ .func = kdbus_test_custom_endpoint,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "monitor",
++ .desc = "monitor functionality",
++ .func = kdbus_test_monitor,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "name-basics",
++ .desc = "basic name registry functions",
++ .func = kdbus_test_name_basic,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "name-conflict",
++ .desc = "name registry conflict details",
++ .func = kdbus_test_name_conflict,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "name-queue",
++ .desc = "queuing of names",
++ .func = kdbus_test_name_queue,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "message-basic",
++ .desc = "basic message handling",
++ .func = kdbus_test_message_basic,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "message-prio",
++ .desc = "handling of messages with priority",
++ .func = kdbus_test_message_prio,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "message-quota",
++ .desc = "message quotas are enforced",
++ .func = kdbus_test_message_quota,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "memory-access",
++ .desc = "memory access",
++ .func = kdbus_test_memory_access,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "timeout",
++ .desc = "timeout",
++ .func = kdbus_test_timeout,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "sync-byebye",
++ .desc = "synchronous replies vs. BYEBYE",
++ .func = kdbus_test_sync_byebye,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "sync-reply",
++ .desc = "synchronous replies",
++ .func = kdbus_test_sync_reply,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "message-free",
++ .desc = "freeing of memory",
++ .func = kdbus_test_free,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "connection-info",
++ .desc = "retrieving connection information",
++ .func = kdbus_test_conn_info,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "connection-update",
++ .desc = "updating connection information",
++ .func = kdbus_test_conn_update,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "writable-pool",
++ .desc = "verifying pools are never writable",
++ .func = kdbus_test_writable_pool,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "policy",
++ .desc = "policy",
++ .func = kdbus_test_policy,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "policy-priv",
++ .desc = "unprivileged bus access",
++ .func = kdbus_test_policy_priv,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "policy-ns",
++ .desc = "policy in user namespaces",
++ .func = kdbus_test_policy_ns,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "metadata-ns",
++ .desc = "metadata in different namespaces",
++ .func = kdbus_test_metadata_ns,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "match-id-add",
++ .desc = "adding of matches by id",
++ .func = kdbus_test_match_id_add,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "match-id-remove",
++ .desc = "removing of matches by id",
++ .func = kdbus_test_match_id_remove,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "match-replace",
++ .desc = "replace of matches with the same cookie",
++ .func = kdbus_test_match_replace,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "match-name-add",
++ .desc = "adding of matches by name",
++ .func = kdbus_test_match_name_add,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "match-name-remove",
++ .desc = "removing of matches by name",
++ .func = kdbus_test_match_name_remove,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "match-name-change",
++ .desc = "matching for name changes",
++ .func = kdbus_test_match_name_change,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "match-bloom",
++ .desc = "matching with bloom filters",
++ .func = kdbus_test_match_bloom,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "activator",
++ .desc = "activator connections",
++ .func = kdbus_test_activator,
++ .flags = TEST_CREATE_BUS | TEST_CREATE_CONN,
++ },
++ {
++ .name = "benchmark",
++ .desc = "benchmark",
++ .func = kdbus_test_benchmark,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "benchmark-nomemfds",
++ .desc = "benchmark without using memfds",
++ .func = kdbus_test_benchmark_nomemfds,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ .name = "benchmark-uds",
++ .desc = "benchmark comparison to UDS",
++ .func = kdbus_test_benchmark_uds,
++ .flags = TEST_CREATE_BUS,
++ },
++ {
++ /* Last test */
++ .name = "attach-flags",
++ .desc = "attach flags mask",
++ .func = kdbus_test_attach_flags,
++ .flags = 0,
++ },
++};
++
++#define N_TESTS ((int) (sizeof(tests) / sizeof(tests[0])))
++
++static int test_prepare_env(const struct kdbus_test *t,
++ const struct kdbus_test_args *args,
++ struct kdbus_test_env *env)
++{
++ if (t->flags & TEST_CREATE_BUS) {
++ char *s;
++ char *n = NULL;
++ int ret;
++
++ asprintf(&s, "%s/control", args->root);
++
++ env->control_fd = open(s, O_RDWR);
++ free(s);
++ ASSERT_RETURN(env->control_fd >= 0);
++
++ if (!args->busname) {
++ n = unique_name("test-bus");
++ ASSERT_RETURN(n);
++ }
++
++ ret = kdbus_create_bus(env->control_fd,
++ args->busname ?: n,
++ _KDBUS_ATTACH_ALL,
++ _KDBUS_ATTACH_ALL, &s);
++ free(n);
++ ASSERT_RETURN(ret == 0);
++
++ asprintf(&env->buspath, "%s/%s/bus", args->root, s);
++ free(s);
++ }
++
++ if (t->flags & TEST_CREATE_CONN) {
++ env->conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(env->conn);
++ }
++
++ env->root = args->root;
++ env->module = args->module;
++ env->mask_param_path = args->mask_param_path;
++
++ return 0;
++}
++
++void test_unprepare_env(const struct kdbus_test *t, struct kdbus_test_env *env)
++{
++ if (env->conn) {
++ kdbus_conn_free(env->conn);
++ env->conn = NULL;
++ }
++
++ if (env->control_fd >= 0) {
++ close(env->control_fd);
++ env->control_fd = -1;
++ }
++
++ if (env->buspath) {
++ free(env->buspath);
++ env->buspath = NULL;
++ }
++}
++
++static int test_run(const struct kdbus_test *t,
++ const struct kdbus_test_args *kdbus_args,
++ int wait)
++{
++ int ret;
++ struct kdbus_test_env env = {};
++
++ ret = test_prepare_env(t, kdbus_args, &env);
++ if (ret != TEST_OK)
++ return ret;
++
++ if (wait > 0) {
++ printf("Sleeping %d seconds before running test ...\n", wait);
++ sleep(wait);
++ }
++
++ ret = t->func(&env);
++ test_unprepare_env(t, &env);
++ return ret;
++}
++
++static int test_run_forked(const struct kdbus_test *t,
++ const struct kdbus_test_args *kdbus_args,
++ int wait)
++{
++ int ret;
++ pid_t pid;
++
++ pid = fork();
++ if (pid < 0) {
++ return TEST_ERR;
++ } else if (pid == 0) {
++ ret = test_run(t, kdbus_args, wait);
++ _exit(ret);
++ }
++
++ pid = waitpid(pid, &ret, 0);
++ if (pid <= 0)
++ return TEST_ERR;
++ else if (!WIFEXITED(ret))
++ return TEST_ERR;
++ else
++ return WEXITSTATUS(ret);
++}
++
++static void print_test_result(int ret)
++{
++ switch (ret) {
++ case TEST_OK:
++ printf("OK");
++ break;
++ case TEST_SKIP:
++ printf("SKIPPED");
++ break;
++ case TEST_ERR:
++ printf("ERROR");
++ break;
++ }
++}
++
++static int start_all_tests(struct kdbus_test_args *kdbus_args)
++{
++ int ret;
++ unsigned int fail_cnt = 0;
++ unsigned int skip_cnt = 0;
++ unsigned int ok_cnt = 0;
++ unsigned int i;
++
++ if (kdbus_args->tap_output) {
++ printf("1..%d\n", N_TESTS);
++ fflush(stdout);
++ }
++
++ kdbus_util_verbose = false;
++
++ for (i = 0; i < N_TESTS; i++) {
++ const struct kdbus_test *t = tests + i;
++
++ if (!kdbus_args->tap_output) {
++ unsigned int n;
++
++ printf("Testing %s (%s) ", t->desc, t->name);
++ for (n = 0; n < 60 - strlen(t->desc) - strlen(t->name); n++)
++ printf(".");
++ printf(" ");
++ }
++
++ ret = test_run_forked(t, kdbus_args, 0);
++ switch (ret) {
++ case TEST_OK:
++ ok_cnt++;
++ break;
++ case TEST_SKIP:
++ skip_cnt++;
++ break;
++ case TEST_ERR:
++ fail_cnt++;
++ break;
++ }
++
++ if (kdbus_args->tap_output) {
++ printf("%sok %d - %s%s (%s)\n",
++ (ret == TEST_ERR) ? "not " : "", i + 1,
++ (ret == TEST_SKIP) ? "# SKIP " : "",
++ t->desc, t->name);
++ fflush(stdout);
++ } else {
++ print_test_result(ret);
++ printf("\n");
++ }
++ }
++
++ if (kdbus_args->tap_output)
++ printf("Failed %d/%d tests, %.2f%% okay\n", fail_cnt, N_TESTS,
++ 100.0 - (fail_cnt * 100.0) / ((float) N_TESTS));
++ else
++ printf("\nSUMMARY: %u tests passed, %u skipped, %u failed\n",
++ ok_cnt, skip_cnt, fail_cnt);
++
++ return fail_cnt > 0 ? TEST_ERR : TEST_OK;
++}
++
++static int start_one_test(struct kdbus_test_args *kdbus_args)
++{
++ int i, ret;
++ bool test_found = false;
++
++ for (i = 0; i < N_TESTS; i++) {
++ const struct kdbus_test *t = tests + i;
++
++ if (strcmp(t->name, kdbus_args->test))
++ continue;
++
++ do {
++ test_found = true;
++ if (kdbus_args->fork)
++ ret = test_run_forked(t, kdbus_args,
++ kdbus_args->wait);
++ else
++ ret = test_run(t, kdbus_args,
++ kdbus_args->wait);
++
++ printf("Testing %s: ", t->desc);
++ print_test_result(ret);
++ printf("\n");
++
++ if (ret != TEST_OK)
++ break;
++ } while (kdbus_args->loop);
++
++ return ret;
++ }
++
++ if (!test_found) {
++ printf("Unknown test-id '%s'\n", kdbus_args->test);
++ return TEST_ERR;
++ }
++
++ return TEST_OK;
++}
++
++static void usage(const char *argv0)
++{
++ unsigned int i, j;
++
++ printf("Usage: %s [options]\n"
++ "Options:\n"
++ "\t-a, --tap Output test results in TAP format\n"
++ "\t-m, --module <module> Kdbus module name\n"
++ "\t-x, --loop Run in a loop\n"
++ "\t-f, --fork Fork before running a test\n"
++ "\t-h, --help Print this help\n"
++ "\t-r, --root <root> Toplevel of the kdbus hierarchy\n"
++ "\t-t, --test <test-id> Run one specific test only, in verbose mode\n"
++ "\t-b, --bus <busname> Instead of generating a random bus name, take <busname>.\n"
++ "\t-w, --wait <secs> Wait <secs> before actually starting test\n"
++ "\t --mntns New mount namespace\n"
++ "\t --pidns New PID namespace\n"
++ "\t --userns New user namespace\n"
++ "\t --uidmap uid_map UID map for user namespace\n"
++ "\t --gidmap gid_map GID map for user namespace\n"
++ "\n", argv0);
++
++ printf("By default, all test are run once, and a summary is printed.\n"
++ "Available tests for --test:\n\n");
++
++ for (i = 0; i < N_TESTS; i++) {
++ const struct kdbus_test *t = tests + i;
++
++ printf("\t%s", t->name);
++
++ for (j = 0; j < 24 - strlen(t->name); j++)
++ printf(" ");
++
++ printf("Test %s\n", t->desc);
++ }
++
++ printf("\n");
++ printf("Note that some tests may, if run specifically by --test, "
++ "behave differently, and not terminate by themselves.\n");
++
++ exit(EXIT_FAILURE);
++}
++
++void print_kdbus_test_args(struct kdbus_test_args *args)
++{
++ if (args->userns || args->pidns || args->mntns)
++ printf("# Starting tests in new %s%s%s namespaces%s\n",
++ args->mntns ? "MOUNT " : "",
++ args->pidns ? "PID " : "",
++ args->userns ? "USER " : "",
++ args->mntns ? ", kdbusfs will be remounted" : "");
++ else
++ printf("# Starting tests in the same namespaces\n");
++}
++
++void print_metadata_support(void)
++{
++ bool no_meta_audit, no_meta_cgroups, no_meta_seclabel;
++
++ /*
++ * KDBUS_ATTACH_CGROUP, KDBUS_ATTACH_AUDIT and
++ * KDBUS_ATTACH_SECLABEL
++ */
++ no_meta_audit = !config_auditsyscall_is_enabled();
++ no_meta_cgroups = !config_cgroups_is_enabled();
++ no_meta_seclabel = !config_security_is_enabled();
++
++ if (no_meta_audit | no_meta_cgroups | no_meta_seclabel)
++ printf("# Starting tests without %s%s%s metadata support\n",
++ no_meta_audit ? "AUDIT " : "",
++ no_meta_cgroups ? "CGROUP " : "",
++ no_meta_seclabel ? "SECLABEL " : "");
++ else
++ printf("# Starting tests with full metadata support\n");
++}
++
++int run_tests(struct kdbus_test_args *kdbus_args)
++{
++ int ret;
++ static char control[4096];
++
++ snprintf(control, sizeof(control), "%s/control", kdbus_args->root);
++
++ if (access(control, W_OK) < 0) {
++ printf("Unable to locate control node at '%s'.\n",
++ control);
++ return TEST_ERR;
++ }
++
++ if (kdbus_args->test) {
++ ret = start_one_test(kdbus_args);
++ } else {
++ do {
++ ret = start_all_tests(kdbus_args);
++ if (ret != TEST_OK)
++ break;
++ } while (kdbus_args->loop);
++ }
++
++ return ret;
++}
++
++static void nop_handler(int sig) {}
++
++static int test_prepare_mounts(struct kdbus_test_args *kdbus_args)
++{
++ int ret;
++ char kdbusfs[64] = {'\0'};
++
++ snprintf(kdbusfs, sizeof(kdbusfs), "%sfs", kdbus_args->module);
++
++ /* make current mount slave */
++ ret = mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL);
++ if (ret < 0) {
++ ret = -errno;
++ printf("error mount() root: %d (%m)\n", ret);
++ return ret;
++ }
++
++ /* Remount procfs since we need it in our tests */
++ if (kdbus_args->pidns) {
++ ret = mount("proc", "/proc", "proc",
++ MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
++ if (ret < 0) {
++ ret = -errno;
++ printf("error mount() /proc : %d (%m)\n", ret);
++ return ret;
++ }
++ }
++
++ /* Remount kdbusfs */
++ ret = mount(kdbusfs, kdbus_args->root, kdbusfs,
++ MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
++ if (ret < 0) {
++ ret = -errno;
++ printf("error mount() %s :%d (%m)\n", kdbusfs, ret);
++ return ret;
++ }
++
++ return 0;
++}
++
++int run_tests_in_namespaces(struct kdbus_test_args *kdbus_args)
++{
++ int ret;
++ int efd = -1;
++ int status;
++ pid_t pid, rpid;
++ struct sigaction oldsa;
++ struct sigaction sa = {
++ .sa_handler = nop_handler,
++ .sa_flags = SA_NOCLDSTOP,
++ };
++
++ efd = eventfd(0, EFD_CLOEXEC);
++ if (efd < 0) {
++ ret = -errno;
++ printf("eventfd() failed: %d (%m)\n", ret);
++ return TEST_ERR;
++ }
++
++ ret = sigaction(SIGCHLD, &sa, &oldsa);
++ if (ret < 0) {
++ ret = -errno;
++ printf("sigaction() failed: %d (%m)\n", ret);
++ return TEST_ERR;
++ }
++
++ /* setup namespaces */
++ pid = syscall(__NR_clone, SIGCHLD|
++ (kdbus_args->userns ? CLONE_NEWUSER : 0) |
++ (kdbus_args->mntns ? CLONE_NEWNS : 0) |
++ (kdbus_args->pidns ? CLONE_NEWPID : 0), NULL);
++ if (pid < 0) {
++ printf("clone() failed: %d (%m)\n", -errno);
++ return TEST_ERR;
++ }
++
++ if (pid == 0) {
++ eventfd_t event_status = 0;
++
++ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
++ if (ret < 0) {
++ ret = -errno;
++ printf("error prctl(): %d (%m)\n", ret);
++ _exit(TEST_ERR);
++ }
++
++ /* reset sighandlers of childs */
++ ret = sigaction(SIGCHLD, &oldsa, NULL);
++ if (ret < 0) {
++ ret = -errno;
++ printf("sigaction() failed: %d (%m)\n", ret);
++ _exit(TEST_ERR);
++ }
++
++ ret = eventfd_read(efd, &event_status);
++ if (ret < 0 || event_status != 1) {
++ printf("error eventfd_read()\n");
++ _exit(TEST_ERR);
++ }
++
++ if (kdbus_args->mntns) {
++ ret = test_prepare_mounts(kdbus_args);
++ if (ret < 0) {
++ printf("error preparing mounts\n");
++ _exit(TEST_ERR);
++ }
++ }
++
++ ret = run_tests(kdbus_args);
++ _exit(ret);
++ }
++
++ /* Setup userns mapping */
++ if (kdbus_args->userns) {
++ ret = userns_map_uid_gid(pid, kdbus_args->uid_map,
++ kdbus_args->gid_map);
++ if (ret < 0) {
++ printf("error mapping uid and gid in userns\n");
++ eventfd_write(efd, 2);
++ return TEST_ERR;
++ }
++ }
++
++ ret = eventfd_write(efd, 1);
++ if (ret < 0) {
++ ret = -errno;
++ printf("error eventfd_write(): %d (%m)\n", ret);
++ return TEST_ERR;
++ }
++
++ rpid = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(rpid == pid, TEST_ERR);
++
++ close(efd);
++
++ if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
++ return TEST_ERR;
++
++ return TEST_OK;
++}
++
++int start_tests(struct kdbus_test_args *kdbus_args)
++{
++ int ret;
++ bool namespaces;
++ uint64_t kdbus_param_mask;
++ static char fspath[4096], parampath[4096];
++
++ namespaces = (kdbus_args->mntns || kdbus_args->pidns ||
++ kdbus_args->userns);
++
++ /* for pidns we need mntns set */
++ if (kdbus_args->pidns && !kdbus_args->mntns) {
++ printf("Failed: please set both pid and mnt namesapces\n");
++ return TEST_ERR;
++ }
++
++ if (kdbus_args->userns) {
++ if (!config_user_ns_is_enabled()) {
++ printf("User namespace not supported\n");
++ return TEST_ERR;
++ }
++
++ if (!kdbus_args->uid_map || !kdbus_args->gid_map) {
++ printf("Failed: please specify uid or gid mapping\n");
++ return TEST_ERR;
++ }
++ }
++
++ print_kdbus_test_args(kdbus_args);
++ print_metadata_support();
++
++ /* setup kdbus paths */
++ if (!kdbus_args->module)
++ kdbus_args->module = "kdbus";
++
++ if (!kdbus_args->root) {
++ snprintf(fspath, sizeof(fspath), "/sys/fs/%s",
++ kdbus_args->module);
++ kdbus_args->root = fspath;
++ }
++
++ snprintf(parampath, sizeof(parampath),
++ "/sys/module/%s/parameters/attach_flags_mask",
++ kdbus_args->module);
++ kdbus_args->mask_param_path = parampath;
++
++ ret = kdbus_sysfs_get_parameter_mask(kdbus_args->mask_param_path,
++ &kdbus_param_mask);
++ if (ret < 0)
++ return TEST_ERR;
++
++ printf("# Starting tests with an attach_flags_mask=0x%llx\n",
++ (unsigned long long)kdbus_param_mask);
++
++ /* Start tests */
++ if (namespaces)
++ ret = run_tests_in_namespaces(kdbus_args);
++ else
++ ret = run_tests(kdbus_args);
++
++ return ret;
++}
++
++int main(int argc, char *argv[])
++{
++ int t, ret = 0;
++ struct kdbus_test_args *kdbus_args;
++ enum {
++ ARG_MNTNS = 0x100,
++ ARG_PIDNS,
++ ARG_USERNS,
++ ARG_UIDMAP,
++ ARG_GIDMAP,
++ };
++
++ kdbus_args = malloc(sizeof(*kdbus_args));
++ if (!kdbus_args) {
++ printf("unable to malloc() kdbus_args\n");
++ return EXIT_FAILURE;
++ }
++
++ memset(kdbus_args, 0, sizeof(*kdbus_args));
++
++ static const struct option options[] = {
++ { "loop", no_argument, NULL, 'x' },
++ { "help", no_argument, NULL, 'h' },
++ { "root", required_argument, NULL, 'r' },
++ { "test", required_argument, NULL, 't' },
++ { "bus", required_argument, NULL, 'b' },
++ { "wait", required_argument, NULL, 'w' },
++ { "fork", no_argument, NULL, 'f' },
++ { "module", required_argument, NULL, 'm' },
++ { "tap", no_argument, NULL, 'a' },
++ { "mntns", no_argument, NULL, ARG_MNTNS },
++ { "pidns", no_argument, NULL, ARG_PIDNS },
++ { "userns", no_argument, NULL, ARG_USERNS },
++ { "uidmap", required_argument, NULL, ARG_UIDMAP },
++ { "gidmap", required_argument, NULL, ARG_GIDMAP },
++ {}
++ };
++
++ srand(time(NULL));
++
++ while ((t = getopt_long(argc, argv, "hxfm:r:t:b:w:a", options, NULL)) >= 0) {
++ switch (t) {
++ case 'x':
++ kdbus_args->loop = 1;
++ break;
++
++ case 'm':
++ kdbus_args->module = optarg;
++ break;
++
++ case 'r':
++ kdbus_args->root = optarg;
++ break;
++
++ case 't':
++ kdbus_args->test = optarg;
++ break;
++
++ case 'b':
++ kdbus_args->busname = optarg;
++ break;
++
++ case 'w':
++ kdbus_args->wait = strtol(optarg, NULL, 10);
++ break;
++
++ case 'f':
++ kdbus_args->fork = 1;
++ break;
++
++ case 'a':
++ kdbus_args->tap_output = 1;
++ break;
++
++ case ARG_MNTNS:
++ kdbus_args->mntns = true;
++ break;
++
++ case ARG_PIDNS:
++ kdbus_args->pidns = true;
++ break;
++
++ case ARG_USERNS:
++ kdbus_args->userns = true;
++ break;
++
++ case ARG_UIDMAP:
++ kdbus_args->uid_map = optarg;
++ break;
++
++ case ARG_GIDMAP:
++ kdbus_args->gid_map = optarg;
++ break;
++
++ default:
++ case 'h':
++ usage(argv[0]);
++ }
++ }
++
++ ret = start_tests(kdbus_args);
++ if (ret == TEST_ERR)
++ return EXIT_FAILURE;
++
++ free(kdbus_args);
++
++ return 0;
++}
+diff --git a/tools/testing/selftests/kdbus/kdbus-test.h b/tools/testing/selftests/kdbus/kdbus-test.h
+new file mode 100644
+index 0000000..6473318
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/kdbus-test.h
+@@ -0,0 +1,85 @@
++#ifndef _TEST_KDBUS_H_
++#define _TEST_KDBUS_H_
++
++struct kdbus_test_env {
++ char *buspath;
++ const char *root;
++ const char *module;
++ const char *mask_param_path;
++ int control_fd;
++ struct kdbus_conn *conn;
++};
++
++enum {
++ TEST_OK,
++ TEST_SKIP,
++ TEST_ERR,
++};
++
++#define ASSERT_RETURN_VAL(cond, val) \
++ if (!(cond)) { \
++ fprintf(stderr, "Assertion '%s' failed in %s(), %s:%d\n", \
++ #cond, __func__, __FILE__, __LINE__); \
++ return val; \
++ }
++
++#define ASSERT_EXIT_VAL(cond, val) \
++ if (!(cond)) { \
++ fprintf(stderr, "Assertion '%s' failed in %s(), %s:%d\n", \
++ #cond, __func__, __FILE__, __LINE__); \
++ _exit(val); \
++ }
++
++#define ASSERT_BREAK(cond) \
++ if (!(cond)) { \
++ fprintf(stderr, "Assertion '%s' failed in %s(), %s:%d\n", \
++ #cond, __func__, __FILE__, __LINE__); \
++ break; \
++ }
++
++#define ASSERT_RETURN(cond) \
++ ASSERT_RETURN_VAL(cond, TEST_ERR)
++
++#define ASSERT_EXIT(cond) \
++ ASSERT_EXIT_VAL(cond, EXIT_FAILURE)
++
++int kdbus_test_activator(struct kdbus_test_env *env);
++int kdbus_test_attach_flags(struct kdbus_test_env *env);
++int kdbus_test_benchmark(struct kdbus_test_env *env);
++int kdbus_test_benchmark_nomemfds(struct kdbus_test_env *env);
++int kdbus_test_benchmark_uds(struct kdbus_test_env *env);
++int kdbus_test_bus_make(struct kdbus_test_env *env);
++int kdbus_test_byebye(struct kdbus_test_env *env);
++int kdbus_test_chat(struct kdbus_test_env *env);
++int kdbus_test_conn_info(struct kdbus_test_env *env);
++int kdbus_test_conn_update(struct kdbus_test_env *env);
++int kdbus_test_daemon(struct kdbus_test_env *env);
++int kdbus_test_custom_endpoint(struct kdbus_test_env *env);
++int kdbus_test_fd_passing(struct kdbus_test_env *env);
++int kdbus_test_free(struct kdbus_test_env *env);
++int kdbus_test_hello(struct kdbus_test_env *env);
++int kdbus_test_match_bloom(struct kdbus_test_env *env);
++int kdbus_test_match_id_add(struct kdbus_test_env *env);
++int kdbus_test_match_id_remove(struct kdbus_test_env *env);
++int kdbus_test_match_replace(struct kdbus_test_env *env);
++int kdbus_test_match_name_add(struct kdbus_test_env *env);
++int kdbus_test_match_name_change(struct kdbus_test_env *env);
++int kdbus_test_match_name_remove(struct kdbus_test_env *env);
++int kdbus_test_message_basic(struct kdbus_test_env *env);
++int kdbus_test_message_prio(struct kdbus_test_env *env);
++int kdbus_test_message_quota(struct kdbus_test_env *env);
++int kdbus_test_memory_access(struct kdbus_test_env *env);
++int kdbus_test_metadata_ns(struct kdbus_test_env *env);
++int kdbus_test_monitor(struct kdbus_test_env *env);
++int kdbus_test_name_basic(struct kdbus_test_env *env);
++int kdbus_test_name_conflict(struct kdbus_test_env *env);
++int kdbus_test_name_queue(struct kdbus_test_env *env);
++int kdbus_test_policy(struct kdbus_test_env *env);
++int kdbus_test_policy_ns(struct kdbus_test_env *env);
++int kdbus_test_policy_priv(struct kdbus_test_env *env);
++int kdbus_test_sync_byebye(struct kdbus_test_env *env);
++int kdbus_test_sync_reply(struct kdbus_test_env *env);
++int kdbus_test_timeout(struct kdbus_test_env *env);
++int kdbus_test_writable_pool(struct kdbus_test_env *env);
++
++#endif /* _TEST_KDBUS_H_ */
+diff --git a/tools/testing/selftests/kdbus/kdbus-util.c b/tools/testing/selftests/kdbus/kdbus-util.c
+new file mode 100644
+index 0000000..4b376ec
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/kdbus-util.c
+@@ -0,0 +1,1615 @@
++/*
++ * Copyright (C) 2013-2015 Daniel Mack
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2014-2015 Djalal Harouni
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <stdio.h>
++#include <stdarg.h>
++#include <string.h>
++#include <time.h>
++#include <inttypes.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <stdbool.h>
++#include <errno.h>
++#include <assert.h>
++#include <poll.h>
++#include <grp.h>
++#include <sys/capability.h>
++#include <sys/mman.h>
++#include <sys/stat.h>
++#include <sys/time.h>
++#include <linux/unistd.h>
++#include <linux/memfd.h>
++
++#ifndef __NR_memfd_create
++ #ifdef __x86_64__
++ #define __NR_memfd_create 319
++ #elif defined __arm__
++ #define __NR_memfd_create 385
++ #else
++ #define __NR_memfd_create 356
++ #endif
++#endif
++
++#include "kdbus-api.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++#ifndef F_ADD_SEALS
++#define F_LINUX_SPECIFIC_BASE 1024
++#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
++#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
++
++#define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
++#define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
++#define F_SEAL_GROW 0x0004 /* prevent file from growing */
++#define F_SEAL_WRITE 0x0008 /* prevent writes */
++#endif
++
++int kdbus_util_verbose = true;
++
++int kdbus_sysfs_get_parameter_mask(const char *path, uint64_t *mask)
++{
++ int ret;
++ FILE *file;
++ unsigned long long value;
++
++ file = fopen(path, "r");
++ if (!file) {
++ ret = -errno;
++ kdbus_printf("--- error fopen(): %d (%m)\n", ret);
++ return ret;
++ }
++
++ ret = fscanf(file, "%llu", &value);
++ if (ret != 1) {
++ if (ferror(file))
++ ret = -errno;
++ else
++ ret = -EIO;
++
++ kdbus_printf("--- error fscanf(): %d\n", ret);
++ fclose(file);
++ return ret;
++ }
++
++ *mask = (uint64_t)value;
++
++ fclose(file);
++
++ return 0;
++}
++
++int kdbus_sysfs_set_parameter_mask(const char *path, uint64_t mask)
++{
++ int ret;
++ FILE *file;
++
++ file = fopen(path, "w");
++ if (!file) {
++ ret = -errno;
++ kdbus_printf("--- error open(): %d (%m)\n", ret);
++ return ret;
++ }
++
++ ret = fprintf(file, "%llu", (unsigned long long)mask);
++ if (ret <= 0) {
++ ret = -EIO;
++ kdbus_printf("--- error fprintf(): %d\n", ret);
++ }
++
++ fclose(file);
++
++ return ret > 0 ? 0 : ret;
++}
++
++int kdbus_create_bus(int control_fd, const char *name,
++ uint64_t req_meta, uint64_t owner_meta,
++ char **path)
++{
++ struct {
++ struct kdbus_cmd cmd;
++
++ /* bloom size item */
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_bloom_parameter bloom;
++ } bp;
++
++ /* required and owner metadata items */
++ struct {
++ uint64_t size;
++ uint64_t type;
++ uint64_t flags;
++ } attach[2];
++
++ /* name item */
++ struct {
++ uint64_t size;
++ uint64_t type;
++ char str[64];
++ } name;
++ } bus_make;
++ int ret;
++
++ memset(&bus_make, 0, sizeof(bus_make));
++ bus_make.bp.size = sizeof(bus_make.bp);
++ bus_make.bp.type = KDBUS_ITEM_BLOOM_PARAMETER;
++ bus_make.bp.bloom.size = 64;
++ bus_make.bp.bloom.n_hash = 1;
++
++ snprintf(bus_make.name.str, sizeof(bus_make.name.str),
++ "%u-%s", getuid(), name);
++
++ bus_make.attach[0].type = KDBUS_ITEM_ATTACH_FLAGS_RECV;
++ bus_make.attach[0].size = sizeof(bus_make.attach[0]);
++ bus_make.attach[0].flags = req_meta;
++
++ bus_make.attach[1].type = KDBUS_ITEM_ATTACH_FLAGS_SEND;
++ bus_make.attach[1].size = sizeof(bus_make.attach[0]);
++ bus_make.attach[1].flags = owner_meta;
++
++ bus_make.name.type = KDBUS_ITEM_MAKE_NAME;
++ bus_make.name.size = KDBUS_ITEM_HEADER_SIZE +
++ strlen(bus_make.name.str) + 1;
++
++ bus_make.cmd.flags = KDBUS_MAKE_ACCESS_WORLD;
++ bus_make.cmd.size = sizeof(bus_make.cmd) +
++ bus_make.bp.size +
++ bus_make.attach[0].size +
++ bus_make.attach[1].size +
++ bus_make.name.size;
++
++ kdbus_printf("Creating bus with name >%s< on control fd %d ...\n",
++ name, control_fd);
++
++ ret = kdbus_cmd_bus_make(control_fd, &bus_make.cmd);
++ if (ret < 0) {
++ kdbus_printf("--- error when making bus: %d (%m)\n", ret);
++ return ret;
++ }
++
++ if (ret == 0 && path)
++ *path = strdup(bus_make.name.str);
++
++ return ret;
++}
++
++struct kdbus_conn *
++kdbus_hello(const char *path, uint64_t flags,
++ const struct kdbus_item *item, size_t item_size)
++{
++ struct kdbus_cmd_free cmd_free = {};
++ int fd, ret;
++ struct {
++ struct kdbus_cmd_hello hello;
++
++ struct {
++ uint64_t size;
++ uint64_t type;
++ char str[16];
++ } conn_name;
++
++ uint8_t extra_items[item_size];
++ } h;
++ struct kdbus_conn *conn;
++
++ memset(&h, 0, sizeof(h));
++
++ if (item_size > 0)
++ memcpy(h.extra_items, item, item_size);
++
++ kdbus_printf("-- opening bus connection %s\n", path);
++ fd = open(path, O_RDWR|O_CLOEXEC);
++ if (fd < 0) {
++ kdbus_printf("--- error %d (%m)\n", fd);
++ return NULL;
++ }
++
++ h.hello.flags = flags | KDBUS_HELLO_ACCEPT_FD;
++ h.hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++ h.hello.attach_flags_recv = _KDBUS_ATTACH_ALL;
++ h.conn_name.type = KDBUS_ITEM_CONN_DESCRIPTION;
++ strcpy(h.conn_name.str, "this-is-my-name");
++ h.conn_name.size = KDBUS_ITEM_HEADER_SIZE + strlen(h.conn_name.str) + 1;
++
++ h.hello.size = sizeof(h);
++ h.hello.pool_size = POOL_SIZE;
++
++ ret = kdbus_cmd_hello(fd, (struct kdbus_cmd_hello *) &h.hello);
++ if (ret < 0) {
++ kdbus_printf("--- error when saying hello: %d (%m)\n", ret);
++ return NULL;
++ }
++ kdbus_printf("-- Our peer ID for %s: %llu -- bus uuid: '%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x'\n",
++ path, (unsigned long long)h.hello.id,
++ h.hello.id128[0], h.hello.id128[1], h.hello.id128[2],
++ h.hello.id128[3], h.hello.id128[4], h.hello.id128[5],
++ h.hello.id128[6], h.hello.id128[7], h.hello.id128[8],
++ h.hello.id128[9], h.hello.id128[10], h.hello.id128[11],
++ h.hello.id128[12], h.hello.id128[13], h.hello.id128[14],
++ h.hello.id128[15]);
++
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.offset = h.hello.offset;
++ kdbus_cmd_free(fd, &cmd_free);
++
++ conn = malloc(sizeof(*conn));
++ if (!conn) {
++ kdbus_printf("unable to malloc()!?\n");
++ return NULL;
++ }
++
++ conn->buf = mmap(NULL, POOL_SIZE, PROT_READ, MAP_SHARED, fd, 0);
++ if (conn->buf == MAP_FAILED) {
++ free(conn);
++ close(fd);
++ kdbus_printf("--- error mmap (%m)\n");
++ return NULL;
++ }
++
++ conn->fd = fd;
++ conn->id = h.hello.id;
++ return conn;
++}
++
++struct kdbus_conn *
++kdbus_hello_registrar(const char *path, const char *name,
++ const struct kdbus_policy_access *access,
++ size_t num_access, uint64_t flags)
++{
++ struct kdbus_item *item, *items;
++ size_t i, size;
++
++ size = KDBUS_ITEM_SIZE(strlen(name) + 1) +
++ num_access * KDBUS_ITEM_SIZE(sizeof(*access));
++
++ items = alloca(size);
++
++ item = items;
++ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
++ item->type = KDBUS_ITEM_NAME;
++ strcpy(item->str, name);
++ item = KDBUS_ITEM_NEXT(item);
++
++ for (i = 0; i < num_access; i++) {
++ item->size = KDBUS_ITEM_HEADER_SIZE +
++ sizeof(struct kdbus_policy_access);
++ item->type = KDBUS_ITEM_POLICY_ACCESS;
++
++ item->policy_access.type = access[i].type;
++ item->policy_access.access = access[i].access;
++ item->policy_access.id = access[i].id;
++
++ item = KDBUS_ITEM_NEXT(item);
++ }
++
++ return kdbus_hello(path, flags, items, size);
++}
++
++struct kdbus_conn *kdbus_hello_activator(const char *path, const char *name,
++ const struct kdbus_policy_access *access,
++ size_t num_access)
++{
++ return kdbus_hello_registrar(path, name, access, num_access,
++ KDBUS_HELLO_ACTIVATOR);
++}
++
++bool kdbus_item_in_message(struct kdbus_msg *msg, uint64_t type)
++{
++ const struct kdbus_item *item;
++
++ KDBUS_ITEM_FOREACH(item, msg, items)
++ if (item->type == type)
++ return true;
++
++ return false;
++}
++
++int kdbus_bus_creator_info(struct kdbus_conn *conn,
++ uint64_t flags,
++ uint64_t *offset)
++{
++ struct kdbus_cmd_info *cmd;
++ size_t size = sizeof(*cmd);
++ int ret;
++
++ cmd = alloca(size);
++ memset(cmd, 0, size);
++ cmd->size = size;
++ cmd->attach_flags = flags;
++
++ ret = kdbus_cmd_bus_creator_info(conn->fd, cmd);
++ if (ret < 0) {
++ kdbus_printf("--- error when requesting info: %d (%m)\n", ret);
++ return ret;
++ }
++
++ if (offset)
++ *offset = cmd->offset;
++ else
++ kdbus_free(conn, cmd->offset);
++
++ return 0;
++}
++
++int kdbus_conn_info(struct kdbus_conn *conn, uint64_t id,
++ const char *name, uint64_t flags,
++ uint64_t *offset)
++{
++ struct kdbus_cmd_info *cmd;
++ size_t size = sizeof(*cmd);
++ struct kdbus_info *info;
++ int ret;
++
++ if (name)
++ size += KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
++
++ cmd = alloca(size);
++ memset(cmd, 0, size);
++ cmd->size = size;
++ cmd->attach_flags = flags;
++
++ if (name) {
++ cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
++ cmd->items[0].type = KDBUS_ITEM_NAME;
++ strcpy(cmd->items[0].str, name);
++ } else {
++ cmd->id = id;
++ }
++
++ ret = kdbus_cmd_conn_info(conn->fd, cmd);
++ if (ret < 0) {
++ kdbus_printf("--- error when requesting info: %d (%m)\n", ret);
++ return ret;
++ }
++
++ info = (struct kdbus_info *) (conn->buf + cmd->offset);
++ if (info->size != cmd->info_size) {
++ kdbus_printf("%s(): size mismatch: %d != %d\n", __func__,
++ (int) info->size, (int) cmd->info_size);
++ return -EIO;
++ }
++
++ if (offset)
++ *offset = cmd->offset;
++ else
++ kdbus_free(conn, cmd->offset);
++
++ return 0;
++}
++
++void kdbus_conn_free(struct kdbus_conn *conn)
++{
++ if (!conn)
++ return;
++
++ if (conn->buf)
++ munmap(conn->buf, POOL_SIZE);
++
++ if (conn->fd >= 0)
++ close(conn->fd);
++
++ free(conn);
++}
++
++int sys_memfd_create(const char *name, __u64 size)
++{
++ int ret, fd;
++
++ ret = syscall(__NR_memfd_create, name, MFD_ALLOW_SEALING);
++ if (ret < 0)
++ return ret;
++
++ fd = ret;
++
++ ret = ftruncate(fd, size);
++ if (ret < 0) {
++ close(fd);
++ return ret;
++ }
++
++ return fd;
++}
++
++int sys_memfd_seal_set(int fd)
++{
++ return fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK |
++ F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL);
++}
++
++off_t sys_memfd_get_size(int fd, off_t *size)
++{
++ struct stat stat;
++ int ret;
++
++ ret = fstat(fd, &stat);
++ if (ret < 0) {
++ kdbus_printf("stat() failed: %m\n");
++ return ret;
++ }
++
++ *size = stat.st_size;
++ return 0;
++}
++
++static int __kdbus_msg_send(const struct kdbus_conn *conn,
++ const char *name,
++ uint64_t cookie,
++ uint64_t flags,
++ uint64_t timeout,
++ int64_t priority,
++ uint64_t dst_id,
++ uint64_t cmd_flags,
++ int cancel_fd)
++{
++ struct kdbus_cmd_send *cmd;
++ struct kdbus_msg *msg;
++ const char ref1[1024 * 128 + 3] = "0123456789_0";
++ const char ref2[] = "0123456789_1";
++ struct kdbus_item *item;
++ struct timespec now;
++ uint64_t size;
++ int memfd = -1;
++ int ret;
++
++ size = sizeof(*msg);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++
++ if (dst_id == KDBUS_DST_ID_BROADCAST)
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
++ else {
++ memfd = sys_memfd_create("my-name-is-nice", 1024 * 1024);
++ if (memfd < 0) {
++ kdbus_printf("failed to create memfd: %m\n");
++ return memfd;
++ }
++
++ if (write(memfd, "kdbus memfd 1234567", 19) != 19) {
++ ret = -errno;
++ kdbus_printf("writing to memfd failed: %m\n");
++ return ret;
++ }
++
++ ret = sys_memfd_seal_set(memfd);
++ if (ret < 0) {
++ ret = -errno;
++ kdbus_printf("memfd sealing failed: %m\n");
++ return ret;
++ }
++
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
++ }
++
++ if (name)
++ size += KDBUS_ITEM_SIZE(strlen(name) + 1);
++
++ msg = malloc(size);
++ if (!msg) {
++ ret = -errno;
++ kdbus_printf("unable to malloc()!?\n");
++ return ret;
++ }
++
++ if (dst_id == KDBUS_DST_ID_BROADCAST)
++ flags |= KDBUS_MSG_SIGNAL;
++
++ memset(msg, 0, size);
++ msg->flags = flags;
++ msg->priority = priority;
++ msg->size = size;
++ msg->src_id = conn->id;
++ msg->dst_id = name ? 0 : dst_id;
++ msg->cookie = cookie;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++
++ if (timeout) {
++ ret = clock_gettime(CLOCK_MONOTONIC_COARSE, &now);
++ if (ret < 0)
++ return ret;
++
++ msg->timeout_ns = now.tv_sec * 1000000000ULL +
++ now.tv_nsec + timeout;
++ }
++
++ item = msg->items;
++
++ if (name) {
++ item->type = KDBUS_ITEM_DST_NAME;
++ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
++ strcpy(item->str, name);
++ item = KDBUS_ITEM_NEXT(item);
++ }
++
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t)&ref1;
++ item->vec.size = sizeof(ref1);
++ item = KDBUS_ITEM_NEXT(item);
++
++ /* data padding for ref1 */
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t)NULL;
++ item->vec.size = KDBUS_ALIGN8(sizeof(ref1)) - sizeof(ref1);
++ item = KDBUS_ITEM_NEXT(item);
++
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t)&ref2;
++ item->vec.size = sizeof(ref2);
++ item = KDBUS_ITEM_NEXT(item);
++
++ if (dst_id == KDBUS_DST_ID_BROADCAST) {
++ item->type = KDBUS_ITEM_BLOOM_FILTER;
++ item->size = KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
++ item->bloom_filter.generation = 0;
++ } else {
++ item->type = KDBUS_ITEM_PAYLOAD_MEMFD;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_memfd);
++ item->memfd.size = 16;
++ item->memfd.fd = memfd;
++ }
++ item = KDBUS_ITEM_NEXT(item);
++
++ size = sizeof(*cmd);
++ if (cancel_fd != -1)
++ size += KDBUS_ITEM_SIZE(sizeof(cancel_fd));
++
++ cmd = malloc(size);
++ cmd->size = size;
++ cmd->flags = cmd_flags;
++ cmd->msg_address = (uintptr_t)msg;
++
++ item = cmd->items;
++
++ if (cancel_fd != -1) {
++ item->type = KDBUS_ITEM_CANCEL_FD;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(cancel_fd);
++ item->fds[0] = cancel_fd;
++ item = KDBUS_ITEM_NEXT(item);
++ }
++
++ ret = kdbus_cmd_send(conn->fd, cmd);
++ if (memfd >= 0)
++ close(memfd);
++
++ if (ret < 0) {
++ kdbus_printf("error sending message: %d (%m)\n", ret);
++ return ret;
++ }
++
++ if (cmd_flags & KDBUS_SEND_SYNC_REPLY) {
++ struct kdbus_msg *reply;
++
++ kdbus_printf("SYNC REPLY @offset %llu:\n", cmd->reply.offset);
++ reply = (struct kdbus_msg *)(conn->buf + cmd->reply.offset);
++ kdbus_msg_dump(conn, reply);
++
++ kdbus_msg_free(reply);
++
++ ret = kdbus_free(conn, cmd->reply.offset);
++ if (ret < 0)
++ return ret;
++ }
++
++ free(msg);
++ free(cmd);
++
++ return 0;
++}
++
++int kdbus_msg_send(const struct kdbus_conn *conn, const char *name,
++ uint64_t cookie, uint64_t flags, uint64_t timeout,
++ int64_t priority, uint64_t dst_id)
++{
++ return __kdbus_msg_send(conn, name, cookie, flags, timeout, priority,
++ dst_id, 0, -1);
++}
++
++int kdbus_msg_send_sync(const struct kdbus_conn *conn, const char *name,
++ uint64_t cookie, uint64_t flags, uint64_t timeout,
++ int64_t priority, uint64_t dst_id, int cancel_fd)
++{
++ return __kdbus_msg_send(conn, name, cookie, flags, timeout, priority,
++ dst_id, KDBUS_SEND_SYNC_REPLY, cancel_fd);
++}
++
++int kdbus_msg_send_reply(const struct kdbus_conn *conn,
++ uint64_t reply_cookie,
++ uint64_t dst_id)
++{
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_msg *msg;
++ const char ref1[1024 * 128 + 3] = "0123456789_0";
++ struct kdbus_item *item;
++ uint64_t size;
++ int ret;
++
++ size = sizeof(struct kdbus_msg);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++
++ msg = malloc(size);
++ if (!msg) {
++ kdbus_printf("unable to malloc()!?\n");
++ return -ENOMEM;
++ }
++
++ memset(msg, 0, size);
++ msg->size = size;
++ msg->src_id = conn->id;
++ msg->dst_id = dst_id;
++ msg->cookie_reply = reply_cookie;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++
++ item = msg->items;
++
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t)&ref1;
++ item->vec.size = sizeof(ref1);
++ item = KDBUS_ITEM_NEXT(item);
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ ret = kdbus_cmd_send(conn->fd, &cmd);
++ if (ret < 0)
++ kdbus_printf("error sending message: %d (%m)\n", ret);
++
++ free(msg);
++
++ return ret;
++}
++
++static char *msg_id(uint64_t id, char *buf)
++{
++ if (id == 0)
++ return "KERNEL";
++ if (id == ~0ULL)
++ return "BROADCAST";
++ sprintf(buf, "%llu", (unsigned long long)id);
++ return buf;
++}
++
++int kdbus_msg_dump(const struct kdbus_conn *conn, const struct kdbus_msg *msg)
++{
++ const struct kdbus_item *item = msg->items;
++ char buf_src[32];
++ char buf_dst[32];
++ uint64_t timeout = 0;
++ uint64_t cookie_reply = 0;
++ int ret = 0;
++
++ if (msg->flags & KDBUS_MSG_EXPECT_REPLY)
++ timeout = msg->timeout_ns;
++ else
++ cookie_reply = msg->cookie_reply;
++
++ kdbus_printf("MESSAGE: %s (%llu bytes) flags=0x%08llx, %s → %s, "
++ "cookie=%llu, timeout=%llu cookie_reply=%llu priority=%lli\n",
++ enum_PAYLOAD(msg->payload_type), (unsigned long long)msg->size,
++ (unsigned long long)msg->flags,
++ msg_id(msg->src_id, buf_src), msg_id(msg->dst_id, buf_dst),
++ (unsigned long long)msg->cookie, (unsigned long long)timeout,
++ (unsigned long long)cookie_reply, (long long)msg->priority);
++
++ KDBUS_ITEM_FOREACH(item, msg, items) {
++ if (item->size < KDBUS_ITEM_HEADER_SIZE) {
++ kdbus_printf(" +%s (%llu bytes) invalid data record\n",
++ enum_MSG(item->type), item->size);
++ ret = -EINVAL;
++ break;
++ }
++
++ switch (item->type) {
++ case KDBUS_ITEM_PAYLOAD_OFF: {
++ char *s;
++
++ if (item->vec.offset == ~0ULL)
++ s = "[\\0-bytes]";
++ else
++ s = (char *)msg + item->vec.offset;
++
++ kdbus_printf(" +%s (%llu bytes) off=%llu size=%llu '%s'\n",
++ enum_MSG(item->type), item->size,
++ (unsigned long long)item->vec.offset,
++ (unsigned long long)item->vec.size, s);
++ break;
++ }
++
++ case KDBUS_ITEM_FDS: {
++ int i, n = (item->size - KDBUS_ITEM_HEADER_SIZE) /
++ sizeof(int);
++
++ kdbus_printf(" +%s (%llu bytes, %d fds)\n",
++ enum_MSG(item->type), item->size, n);
++
++ for (i = 0; i < n; i++)
++ kdbus_printf(" fd[%d] = %d\n",
++ i, item->fds[i]);
++
++ break;
++ }
++
++ case KDBUS_ITEM_PAYLOAD_MEMFD: {
++ char *buf;
++ off_t size;
++
++ buf = mmap(NULL, item->memfd.size, PROT_READ,
++ MAP_PRIVATE, item->memfd.fd, 0);
++ if (buf == MAP_FAILED) {
++ kdbus_printf("mmap() fd=%i size=%llu failed: %m\n",
++ item->memfd.fd, item->memfd.size);
++ break;
++ }
++
++ if (sys_memfd_get_size(item->memfd.fd, &size) < 0) {
++ kdbus_printf("KDBUS_CMD_MEMFD_SIZE_GET failed: %m\n");
++ break;
++ }
++
++ kdbus_printf(" +%s (%llu bytes) fd=%i size=%llu filesize=%llu '%s'\n",
++ enum_MSG(item->type), item->size, item->memfd.fd,
++ (unsigned long long)item->memfd.size,
++ (unsigned long long)size, buf);
++ munmap(buf, item->memfd.size);
++ break;
++ }
++
++ case KDBUS_ITEM_CREDS:
++ kdbus_printf(" +%s (%llu bytes) uid=%lld, euid=%lld, suid=%lld, fsuid=%lld, "
++ "gid=%lld, egid=%lld, sgid=%lld, fsgid=%lld\n",
++ enum_MSG(item->type), item->size,
++ item->creds.uid, item->creds.euid,
++ item->creds.suid, item->creds.fsuid,
++ item->creds.gid, item->creds.egid,
++ item->creds.sgid, item->creds.fsgid);
++ break;
++
++ case KDBUS_ITEM_PIDS:
++ kdbus_printf(" +%s (%llu bytes) pid=%lld, tid=%lld, ppid=%lld\n",
++ enum_MSG(item->type), item->size,
++ item->pids.pid, item->pids.tid,
++ item->pids.ppid);
++ break;
++
++ case KDBUS_ITEM_AUXGROUPS: {
++ int i, n;
++
++ kdbus_printf(" +%s (%llu bytes)\n",
++ enum_MSG(item->type), item->size);
++ n = (item->size - KDBUS_ITEM_HEADER_SIZE) /
++ sizeof(uint64_t);
++
++ for (i = 0; i < n; i++)
++ kdbus_printf(" gid[%d] = %lld\n",
++ i, item->data64[i]);
++ break;
++ }
++
++ case KDBUS_ITEM_NAME:
++ case KDBUS_ITEM_PID_COMM:
++ case KDBUS_ITEM_TID_COMM:
++ case KDBUS_ITEM_EXE:
++ case KDBUS_ITEM_CGROUP:
++ case KDBUS_ITEM_SECLABEL:
++ case KDBUS_ITEM_DST_NAME:
++ case KDBUS_ITEM_CONN_DESCRIPTION:
++ kdbus_printf(" +%s (%llu bytes) '%s' (%zu)\n",
++ enum_MSG(item->type), item->size,
++ item->str, strlen(item->str));
++ break;
++
++ case KDBUS_ITEM_OWNED_NAME: {
++ kdbus_printf(" +%s (%llu bytes) '%s' (%zu) flags=0x%08llx\n",
++ enum_MSG(item->type), item->size,
++ item->name.name, strlen(item->name.name),
++ item->name.flags);
++ break;
++ }
++
++ case KDBUS_ITEM_CMDLINE: {
++ size_t size = item->size - KDBUS_ITEM_HEADER_SIZE;
++ const char *str = item->str;
++ int count = 0;
++
++ kdbus_printf(" +%s (%llu bytes) ",
++ enum_MSG(item->type), item->size);
++ while (size) {
++ kdbus_printf("'%s' ", str);
++ size -= strlen(str) + 1;
++ str += strlen(str) + 1;
++ count++;
++ }
++
++ kdbus_printf("(%d string%s)\n",
++ count, (count == 1) ? "" : "s");
++ break;
++ }
++
++ case KDBUS_ITEM_AUDIT:
++ kdbus_printf(" +%s (%llu bytes) loginuid=%u sessionid=%u\n",
++ enum_MSG(item->type), item->size,
++ item->audit.loginuid, item->audit.sessionid);
++ break;
++
++ case KDBUS_ITEM_CAPS: {
++ const uint32_t *cap;
++ int n, i;
++
++ kdbus_printf(" +%s (%llu bytes) len=%llu bytes, last_cap %d\n",
++ enum_MSG(item->type), item->size,
++ (unsigned long long)item->size -
++ KDBUS_ITEM_HEADER_SIZE,
++ (int) item->caps.last_cap);
++
++ cap = item->caps.caps;
++ n = (item->size - offsetof(struct kdbus_item, caps.caps))
++ / 4 / sizeof(uint32_t);
++
++ kdbus_printf(" CapInh=");
++ for (i = 0; i < n; i++)
++ kdbus_printf("%08x", cap[(0 * n) + (n - i - 1)]);
++
++ kdbus_printf(" CapPrm=");
++ for (i = 0; i < n; i++)
++ kdbus_printf("%08x", cap[(1 * n) + (n - i - 1)]);
++
++ kdbus_printf(" CapEff=");
++ for (i = 0; i < n; i++)
++ kdbus_printf("%08x", cap[(2 * n) + (n - i - 1)]);
++
++ kdbus_printf(" CapBnd=");
++ for (i = 0; i < n; i++)
++ kdbus_printf("%08x", cap[(3 * n) + (n - i - 1)]);
++ kdbus_printf("\n");
++ break;
++ }
++
++ case KDBUS_ITEM_TIMESTAMP:
++ kdbus_printf(" +%s (%llu bytes) seq=%llu realtime=%lluns monotonic=%lluns\n",
++ enum_MSG(item->type), item->size,
++ (unsigned long long)item->timestamp.seqnum,
++ (unsigned long long)item->timestamp.realtime_ns,
++ (unsigned long long)item->timestamp.monotonic_ns);
++ break;
++
++ case KDBUS_ITEM_REPLY_TIMEOUT:
++ kdbus_printf(" +%s (%llu bytes) cookie=%llu\n",
++ enum_MSG(item->type), item->size,
++ msg->cookie_reply);
++ break;
++
++ case KDBUS_ITEM_NAME_ADD:
++ case KDBUS_ITEM_NAME_REMOVE:
++ case KDBUS_ITEM_NAME_CHANGE:
++ kdbus_printf(" +%s (%llu bytes) '%s', old id=%lld, now id=%lld, old_flags=0x%llx new_flags=0x%llx\n",
++ enum_MSG(item->type),
++ (unsigned long long) item->size,
++ item->name_change.name,
++ item->name_change.old_id.id,
++ item->name_change.new_id.id,
++ item->name_change.old_id.flags,
++ item->name_change.new_id.flags);
++ break;
++
++ case KDBUS_ITEM_ID_ADD:
++ case KDBUS_ITEM_ID_REMOVE:
++ kdbus_printf(" +%s (%llu bytes) id=%llu flags=%llu\n",
++ enum_MSG(item->type),
++ (unsigned long long) item->size,
++ (unsigned long long) item->id_change.id,
++ (unsigned long long) item->id_change.flags);
++ break;
++
++ default:
++ kdbus_printf(" +%s (%llu bytes)\n",
++ enum_MSG(item->type), item->size);
++ break;
++ }
++ }
++
++ if ((char *)item - ((char *)msg + msg->size) >= 8) {
++ kdbus_printf("invalid padding at end of message\n");
++ ret = -EINVAL;
++ }
++
++ kdbus_printf("\n");
++
++ return ret;
++}
++
++void kdbus_msg_free(struct kdbus_msg *msg)
++{
++ const struct kdbus_item *item;
++ int nfds, i;
++
++ if (!msg)
++ return;
++
++ KDBUS_ITEM_FOREACH(item, msg, items) {
++ switch (item->type) {
++ /* close all memfds */
++ case KDBUS_ITEM_PAYLOAD_MEMFD:
++ close(item->memfd.fd);
++ break;
++ case KDBUS_ITEM_FDS:
++ nfds = (item->size - KDBUS_ITEM_HEADER_SIZE) /
++ sizeof(int);
++
++ for (i = 0; i < nfds; i++)
++ close(item->fds[i]);
++
++ break;
++ }
++ }
++}
++
++int kdbus_msg_recv(struct kdbus_conn *conn,
++ struct kdbus_msg **msg_out,
++ uint64_t *offset)
++{
++ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
++ struct kdbus_msg *msg;
++ int ret;
++
++ ret = kdbus_cmd_recv(conn->fd, &recv);
++ if (ret < 0)
++ return ret;
++
++ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
++ ret = kdbus_msg_dump(conn, msg);
++ if (ret < 0) {
++ kdbus_msg_free(msg);
++ return ret;
++ }
++
++ if (msg_out) {
++ *msg_out = msg;
++
++ if (offset)
++ *offset = recv.msg.offset;
++ } else {
++ kdbus_msg_free(msg);
++
++ ret = kdbus_free(conn, recv.msg.offset);
++ if (ret < 0)
++ return ret;
++ }
++
++ return 0;
++}
++
++/*
++ * Returns: 0 on success, negative errno on failure.
++ *
++ * We must return -ETIMEDOUT, -ECONNREST, -EAGAIN and other errors.
++ * We must return the result of kdbus_msg_recv()
++ */
++int kdbus_msg_recv_poll(struct kdbus_conn *conn,
++ int timeout_ms,
++ struct kdbus_msg **msg_out,
++ uint64_t *offset)
++{
++ int ret;
++
++ do {
++ struct timeval before, after, diff;
++ struct pollfd fd;
++
++ fd.fd = conn->fd;
++ fd.events = POLLIN | POLLPRI | POLLHUP;
++ fd.revents = 0;
++
++ gettimeofday(&before, NULL);
++ ret = poll(&fd, 1, timeout_ms);
++ gettimeofday(&after, NULL);
++
++ if (ret == 0) {
++ ret = -ETIMEDOUT;
++ break;
++ }
++
++ if (ret > 0) {
++ if (fd.revents & POLLIN)
++ ret = kdbus_msg_recv(conn, msg_out, offset);
++
++ if (fd.revents & (POLLHUP | POLLERR))
++ ret = -ECONNRESET;
++ }
++
++ if (ret == 0 || ret != -EAGAIN)
++ break;
++
++ timersub(&after, &before, &diff);
++ timeout_ms -= diff.tv_sec * 1000UL +
++ diff.tv_usec / 1000UL;
++ } while (timeout_ms > 0);
++
++ return ret;
++}
++
++int kdbus_free(const struct kdbus_conn *conn, uint64_t offset)
++{
++ struct kdbus_cmd_free cmd_free = {};
++ int ret;
++
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.offset = offset;
++ cmd_free.flags = 0;
++
++ ret = kdbus_cmd_free(conn->fd, &cmd_free);
++ if (ret < 0) {
++ kdbus_printf("KDBUS_CMD_FREE failed: %d (%m)\n", ret);
++ return ret;
++ }
++
++ return 0;
++}
++
++int kdbus_name_acquire(struct kdbus_conn *conn,
++ const char *name, uint64_t *flags)
++{
++ struct kdbus_cmd *cmd_name;
++ size_t name_len = strlen(name) + 1;
++ uint64_t size = sizeof(*cmd_name) + KDBUS_ITEM_SIZE(name_len);
++ struct kdbus_item *item;
++ int ret;
++
++ cmd_name = alloca(size);
++
++ memset(cmd_name, 0, size);
++
++ item = cmd_name->items;
++ item->size = KDBUS_ITEM_HEADER_SIZE + name_len;
++ item->type = KDBUS_ITEM_NAME;
++ strcpy(item->str, name);
++
++ cmd_name->size = size;
++ if (flags)
++ cmd_name->flags = *flags;
++
++ ret = kdbus_cmd_name_acquire(conn->fd, cmd_name);
++ if (ret < 0) {
++ kdbus_printf("error aquiring name: %s\n", strerror(-ret));
++ return ret;
++ }
++
++ kdbus_printf("%s(): flags after call: 0x%llx\n", __func__,
++ cmd_name->return_flags);
++
++ if (flags)
++ *flags = cmd_name->return_flags;
++
++ return 0;
++}
++
++int kdbus_name_release(struct kdbus_conn *conn, const char *name)
++{
++ struct kdbus_cmd *cmd_name;
++ size_t name_len = strlen(name) + 1;
++ uint64_t size = sizeof(*cmd_name) + KDBUS_ITEM_SIZE(name_len);
++ struct kdbus_item *item;
++ int ret;
++
++ cmd_name = alloca(size);
++
++ memset(cmd_name, 0, size);
++
++ item = cmd_name->items;
++ item->size = KDBUS_ITEM_HEADER_SIZE + name_len;
++ item->type = KDBUS_ITEM_NAME;
++ strcpy(item->str, name);
++
++ cmd_name->size = size;
++
++ kdbus_printf("conn %lld giving up name '%s'\n",
++ (unsigned long long) conn->id, name);
++
++ ret = kdbus_cmd_name_release(conn->fd, cmd_name);
++ if (ret < 0) {
++ kdbus_printf("error releasing name: %s\n", strerror(-ret));
++ return ret;
++ }
++
++ return 0;
++}
++
++int kdbus_list(struct kdbus_conn *conn, uint64_t flags)
++{
++ struct kdbus_cmd_list cmd_list = {};
++ struct kdbus_info *list, *name;
++ int ret;
++
++ cmd_list.size = sizeof(cmd_list);
++ cmd_list.flags = flags;
++
++ ret = kdbus_cmd_list(conn->fd, &cmd_list);
++ if (ret < 0) {
++ kdbus_printf("error listing names: %d (%m)\n", ret);
++ return ret;
++ }
++
++ kdbus_printf("REGISTRY:\n");
++ list = (struct kdbus_info *)(conn->buf + cmd_list.offset);
++
++ KDBUS_FOREACH(name, list, cmd_list.list_size) {
++ uint64_t flags = 0;
++ struct kdbus_item *item;
++ const char *n = "MISSING-NAME";
++
++ if (name->size == sizeof(struct kdbus_cmd))
++ continue;
++
++ KDBUS_ITEM_FOREACH(item, name, items)
++ if (item->type == KDBUS_ITEM_OWNED_NAME) {
++ n = item->name.name;
++ flags = item->name.flags;
++ }
++
++ kdbus_printf("%8llu flags=0x%08llx conn=0x%08llx '%s'\n",
++ name->id, (unsigned long long) flags,
++ name->flags, n);
++ }
++ kdbus_printf("\n");
++
++ ret = kdbus_free(conn, cmd_list.offset);
++
++ return ret;
++}
++
++int kdbus_conn_update_attach_flags(struct kdbus_conn *conn,
++ uint64_t attach_flags_send,
++ uint64_t attach_flags_recv)
++{
++ int ret;
++ size_t size;
++ struct kdbus_cmd *update;
++ struct kdbus_item *item;
++
++ size = sizeof(struct kdbus_cmd);
++ size += KDBUS_ITEM_SIZE(sizeof(uint64_t)) * 2;
++
++ update = malloc(size);
++ if (!update) {
++ kdbus_printf("error malloc: %m\n");
++ return -ENOMEM;
++ }
++
++ memset(update, 0, size);
++ update->size = size;
++
++ item = update->items;
++
++ item->type = KDBUS_ITEM_ATTACH_FLAGS_SEND;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(uint64_t);
++ item->data64[0] = attach_flags_send;
++ item = KDBUS_ITEM_NEXT(item);
++
++ item->type = KDBUS_ITEM_ATTACH_FLAGS_RECV;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(uint64_t);
++ item->data64[0] = attach_flags_recv;
++ item = KDBUS_ITEM_NEXT(item);
++
++ ret = kdbus_cmd_update(conn->fd, update);
++ if (ret < 0)
++ kdbus_printf("error conn update: %d (%m)\n", ret);
++
++ free(update);
++
++ return ret;
++}
++
++int kdbus_conn_update_policy(struct kdbus_conn *conn, const char *name,
++ const struct kdbus_policy_access *access,
++ size_t num_access)
++{
++ struct kdbus_cmd *update;
++ struct kdbus_item *item;
++ size_t i, size;
++ int ret;
++
++ size = sizeof(struct kdbus_cmd);
++ size += KDBUS_ITEM_SIZE(strlen(name) + 1);
++ size += num_access * KDBUS_ITEM_SIZE(sizeof(struct kdbus_policy_access));
++
++ update = malloc(size);
++ if (!update) {
++ kdbus_printf("error malloc: %m\n");
++ return -ENOMEM;
++ }
++
++ memset(update, 0, size);
++ update->size = size;
++
++ item = update->items;
++
++ item->type = KDBUS_ITEM_NAME;
++ item->size = KDBUS_ITEM_HEADER_SIZE + strlen(name) + 1;
++ strcpy(item->str, name);
++ item = KDBUS_ITEM_NEXT(item);
++
++ for (i = 0; i < num_access; i++) {
++ item->size = KDBUS_ITEM_HEADER_SIZE +
++ sizeof(struct kdbus_policy_access);
++ item->type = KDBUS_ITEM_POLICY_ACCESS;
++
++ item->policy_access.type = access[i].type;
++ item->policy_access.access = access[i].access;
++ item->policy_access.id = access[i].id;
++
++ item = KDBUS_ITEM_NEXT(item);
++ }
++
++ ret = kdbus_cmd_update(conn->fd, update);
++ if (ret < 0)
++ kdbus_printf("error conn update: %d (%m)\n", ret);
++
++ free(update);
++
++ return ret;
++}
++
++int kdbus_add_match_id(struct kdbus_conn *conn, uint64_t cookie,
++ uint64_t type, uint64_t id)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_notify_id_change chg;
++ } item;
++ } buf;
++ int ret;
++
++ memset(&buf, 0, sizeof(buf));
++
++ buf.cmd.size = sizeof(buf);
++ buf.cmd.cookie = cookie;
++ buf.item.size = sizeof(buf.item);
++ buf.item.type = type;
++ buf.item.chg.id = id;
++
++ ret = kdbus_cmd_match_add(conn->fd, &buf.cmd);
++ if (ret < 0)
++ kdbus_printf("--- error adding conn match: %d (%m)\n", ret);
++
++ return ret;
++}
++
++int kdbus_add_match_empty(struct kdbus_conn *conn)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct kdbus_item item;
++ } buf;
++ int ret;
++
++ memset(&buf, 0, sizeof(buf));
++
++ buf.item.size = sizeof(uint64_t) * 3;
++ buf.item.type = KDBUS_ITEM_ID;
++ buf.item.id = KDBUS_MATCH_ID_ANY;
++
++ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
++
++ ret = kdbus_cmd_match_add(conn->fd, &buf.cmd);
++ if (ret < 0)
++ kdbus_printf("--- error adding conn match: %d (%m)\n", ret);
++
++ return ret;
++}
++
++static int all_ids_are_mapped(const char *path)
++{
++ int ret;
++ FILE *file;
++ uint32_t inside_id, length;
++
++ file = fopen(path, "r");
++ if (!file) {
++ ret = -errno;
++ kdbus_printf("error fopen() %s: %d (%m)\n",
++ path, ret);
++ return ret;
++ }
++
++ ret = fscanf(file, "%u\t%*u\t%u", &inside_id, &length);
++ if (ret != 2) {
++ if (ferror(file))
++ ret = -errno;
++ else
++ ret = -EIO;
++
++ kdbus_printf("--- error fscanf(): %d\n", ret);
++ fclose(file);
++ return ret;
++ }
++
++ fclose(file);
++
++ /*
++ * If length is 4294967295 which means the invalid uid
++ * (uid_t) -1 then we are able to map all uid/gids
++ */
++ if (inside_id == 0 && length == (uid_t) -1)
++ return 1;
++
++ return 0;
++}
++
++int all_uids_gids_are_mapped()
++{
++ int ret;
++
++ ret = all_ids_are_mapped("/proc/self/uid_map");
++ if (ret <= 0) {
++ kdbus_printf("--- error not all uids are mapped\n");
++ return 0;
++ }
++
++ ret = all_ids_are_mapped("/proc/self/gid_map");
++ if (ret <= 0) {
++ kdbus_printf("--- error not all gids are mapped\n");
++ return 0;
++ }
++
++ return 1;
++}
++
++int drop_privileges(uid_t uid, gid_t gid)
++{
++ int ret;
++
++ ret = setgroups(0, NULL);
++ if (ret < 0) {
++ ret = -errno;
++ kdbus_printf("error setgroups: %d (%m)\n", ret);
++ return ret;
++ }
++
++ ret = setresgid(gid, gid, gid);
++ if (ret < 0) {
++ ret = -errno;
++ kdbus_printf("error setresgid: %d (%m)\n", ret);
++ return ret;
++ }
++
++ ret = setresuid(uid, uid, uid);
++ if (ret < 0) {
++ ret = -errno;
++ kdbus_printf("error setresuid: %d (%m)\n", ret);
++ return ret;
++ }
++
++ return ret;
++}
++
++uint64_t now(clockid_t clock)
++{
++ struct timespec spec;
++
++ clock_gettime(clock, &spec);
++ return spec.tv_sec * 1000ULL * 1000ULL * 1000ULL + spec.tv_nsec;
++}
++
++char *unique_name(const char *prefix)
++{
++ unsigned int i;
++ uint64_t u_now;
++ char n[17];
++ char *str;
++ int r;
++
++ /*
++ * This returns a random string which is guaranteed to be
++ * globally unique across all calls to unique_name(). We
++ * compose the string as:
++ * <prefix>-<random>-<time>
++ * With:
++ * <prefix>: string provided by the caller
++ * <random>: a random alpha string of 16 characters
++ * <time>: the current time in micro-seconds since last boot
++ *
++ * The <random> part makes the string always look vastly different,
++ * the <time> part makes sure no two calls return the same string.
++ */
++
++ u_now = now(CLOCK_MONOTONIC);
++
++ for (i = 0; i < sizeof(n) - 1; ++i)
++ n[i] = 'a' + (rand() % ('z' - 'a'));
++ n[sizeof(n) - 1] = 0;
++
++ r = asprintf(&str, "%s-%s-%" PRIu64, prefix, n, u_now);
++ if (r < 0)
++ return NULL;
++
++ return str;
++}
++
++static int do_userns_map_id(pid_t pid,
++ const char *map_file,
++ const char *map_id)
++{
++ int ret;
++ int fd;
++ char *map;
++ unsigned int i;
++
++ map = strndupa(map_id, strlen(map_id));
++ if (!map) {
++ ret = -errno;
++ kdbus_printf("error strndupa %s: %d (%m)\n",
++ map_file, ret);
++ return ret;
++ }
++
++ for (i = 0; i < strlen(map); i++)
++ if (map[i] == ',')
++ map[i] = '\n';
++
++ fd = open(map_file, O_RDWR);
++ if (fd < 0) {
++ ret = -errno;
++ kdbus_printf("error open %s: %d (%m)\n",
++ map_file, ret);
++ return ret;
++ }
++
++ ret = write(fd, map, strlen(map));
++ if (ret < 0) {
++ ret = -errno;
++ kdbus_printf("error write to %s: %d (%m)\n",
++ map_file, ret);
++ goto out;
++ }
++
++ ret = 0;
++
++out:
++ close(fd);
++ return ret;
++}
++
++int userns_map_uid_gid(pid_t pid,
++ const char *map_uid,
++ const char *map_gid)
++{
++ int fd, ret;
++ char file_id[128] = {'\0'};
++
++ snprintf(file_id, sizeof(file_id), "/proc/%ld/uid_map",
++ (long) pid);
++
++ ret = do_userns_map_id(pid, file_id, map_uid);
++ if (ret < 0)
++ return ret;
++
++ snprintf(file_id, sizeof(file_id), "/proc/%ld/setgroups",
++ (long) pid);
++
++ fd = open(file_id, O_WRONLY);
++ if (fd >= 0) {
++ write(fd, "deny\n", 5);
++ close(fd);
++ }
++
++ snprintf(file_id, sizeof(file_id), "/proc/%ld/gid_map",
++ (long) pid);
++
++ return do_userns_map_id(pid, file_id, map_gid);
++}
++
++static int do_cap_get_flag(cap_t caps, cap_value_t cap)
++{
++ int ret;
++ cap_flag_value_t flag_set;
++
++ ret = cap_get_flag(caps, cap, CAP_EFFECTIVE, &flag_set);
++ if (ret < 0) {
++ ret = -errno;
++ kdbus_printf("error cap_get_flag(): %d (%m)\n", ret);
++ return ret;
++ }
++
++ return (flag_set == CAP_SET);
++}
++
++/*
++ * Returns:
++ * 1 in case all the requested effective capabilities are set.
++ * 0 in case we do not have the requested capabilities. This value
++ * will be used to abort tests with TEST_SKIP
++ * Negative errno on failure.
++ *
++ * Terminate args with a negative value.
++ */
++int test_is_capable(int cap, ...)
++{
++ int ret;
++ va_list ap;
++ cap_t caps;
++
++ caps = cap_get_proc();
++ if (!cap) {
++ ret = -errno;
++ kdbus_printf("error cap_get_proc(): %d (%m)\n", ret);
++ return ret;
++ }
++
++ ret = do_cap_get_flag(caps, (cap_value_t)cap);
++ if (ret <= 0)
++ goto out;
++
++ va_start(ap, cap);
++ while ((cap = va_arg(ap, int)) > 0) {
++ ret = do_cap_get_flag(caps, (cap_value_t)cap);
++ if (ret <= 0)
++ break;
++ }
++ va_end(ap);
++
++out:
++ cap_free(caps);
++ return ret;
++}
++
++int config_user_ns_is_enabled(void)
++{
++ return (access("/proc/self/uid_map", F_OK) == 0);
++}
++
++int config_auditsyscall_is_enabled(void)
++{
++ return (access("/proc/self/loginuid", F_OK) == 0);
++}
++
++int config_cgroups_is_enabled(void)
++{
++ return (access("/proc/self/cgroup", F_OK) == 0);
++}
++
++int config_security_is_enabled(void)
++{
++ int fd;
++ int ret;
++ char buf[128];
++
++ /* CONFIG_SECURITY is disabled */
++ if (access("/proc/self/attr/current", F_OK) != 0)
++ return 0;
++
++ /*
++ * Now only if read() fails with -EINVAL then we assume
++ * that SECLABEL and LSM are disabled
++ */
++ fd = open("/proc/self/attr/current", O_RDONLY|O_CLOEXEC);
++ if (fd < 0)
++ return 1;
++
++ ret = read(fd, buf, sizeof(buf));
++ if (ret == -1 && errno == EINVAL)
++ ret = 0;
++ else
++ ret = 1;
++
++ close(fd);
++
++ return ret;
++}
+diff --git a/tools/testing/selftests/kdbus/kdbus-util.h b/tools/testing/selftests/kdbus/kdbus-util.h
+new file mode 100644
+index 0000000..50ff071
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/kdbus-util.h
+@@ -0,0 +1,222 @@
++/*
++ * Copyright (C) 2013-2015 Kay Sievers
++ * Copyright (C) 2013-2015 Daniel Mack
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++#pragma once
++
++#define BIT(X) (1 << (X))
++
++#include <time.h>
++#include <stdbool.h>
++#include <linux/kdbus.h>
++
++#define _STRINGIFY(x) #x
++#define STRINGIFY(x) _STRINGIFY(x)
++#define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
++
++#define KDBUS_PTR(addr) ((void *)(uintptr_t)(addr))
++
++#define KDBUS_ALIGN8(l) (((l) + 7) & ~7)
++#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
++#define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
++
++#define KDBUS_ITEM_NEXT(item) \
++ (typeof(item))(((uint8_t *)item) + KDBUS_ALIGN8((item)->size))
++#define KDBUS_ITEM_FOREACH(item, head, first) \
++ for (item = (head)->first; \
++ ((uint8_t *)(item) < (uint8_t *)(head) + (head)->size) && \
++ ((uint8_t *)(item) >= (uint8_t *)(head)); \
++ item = KDBUS_ITEM_NEXT(item))
++#define KDBUS_FOREACH(iter, first, _size) \
++ for (iter = (first); \
++ ((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
++ ((uint8_t *)(iter) >= (uint8_t *)(first)); \
++ iter = (void*)(((uint8_t *)iter) + KDBUS_ALIGN8((iter)->size)))
++
++
++#define _KDBUS_ATTACH_BITS_SET_NR (__builtin_popcountll(_KDBUS_ATTACH_ALL))
++
++/* Sum of KDBUS_ITEM_* that reflects _KDBUS_ATTACH_ALL */
++#define KDBUS_ATTACH_ITEMS_TYPE_SUM \
++ ((((_KDBUS_ATTACH_BITS_SET_NR - 1) * \
++ ((_KDBUS_ATTACH_BITS_SET_NR - 1) + 1)) / 2 ) + \
++ (_KDBUS_ITEM_ATTACH_BASE * _KDBUS_ATTACH_BITS_SET_NR))
++
++
++#define POOL_SIZE (16 * 1024LU * 1024LU)
++
++#define UNPRIV_UID 65534
++#define UNPRIV_GID 65534
++
++/* Dump as user of process, useful for user namespace testing */
++#define SUID_DUMP_USER 1
++
++extern int kdbus_util_verbose;
++
++#define kdbus_printf(X...) \
++ if (kdbus_util_verbose) \
++ printf(X)
++
++#define RUN_UNPRIVILEGED(child_uid, child_gid, _child_, _parent_) ({ \
++ pid_t pid, rpid; \
++ int ret; \
++ \
++ pid = fork(); \
++ if (pid == 0) { \
++ ret = drop_privileges(child_uid, child_gid); \
++ ASSERT_EXIT_VAL(ret == 0, ret); \
++ \
++ _child_; \
++ _exit(0); \
++ } else if (pid > 0) { \
++ _parent_; \
++ rpid = waitpid(pid, &ret, 0); \
++ ASSERT_RETURN(rpid == pid); \
++ ASSERT_RETURN(WIFEXITED(ret)); \
++ ASSERT_RETURN(WEXITSTATUS(ret) == 0); \
++ ret = TEST_OK; \
++ } else { \
++ ret = pid; \
++ } \
++ \
++ ret; \
++ })
++
++#define RUN_UNPRIVILEGED_CONN(_var_, _bus_, _code_) \
++ RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({ \
++ struct kdbus_conn *_var_; \
++ _var_ = kdbus_hello(_bus_, 0, NULL, 0); \
++ ASSERT_EXIT(_var_); \
++ _code_; \
++ kdbus_conn_free(_var_); \
++ }), ({ 0; }))
++
++#define RUN_CLONE_CHILD(clone_ret, flags, _setup_, _child_body_, \
++ _parent_setup_, _parent_body_) ({ \
++ pid_t pid, rpid; \
++ int ret; \
++ int efd = -1; \
++ \
++ _setup_; \
++ efd = eventfd(0, EFD_CLOEXEC); \
++ ASSERT_RETURN(efd >= 0); \
++ *clone_ret = 0; \
++ pid = syscall(__NR_clone, flags, NULL); \
++ if (pid == 0) { \
++ eventfd_t event_status = 0; \
++ ret = prctl(PR_SET_PDEATHSIG, SIGKILL); \
++ ASSERT_EXIT(ret == 0); \
++ ret = eventfd_read(efd, &event_status); \
++ if (ret < 0 || event_status != 1) { \
++ kdbus_printf("error eventfd_read()\n"); \
++ _exit(EXIT_FAILURE); \
++ } \
++ _child_body_; \
++ _exit(0); \
++ } else if (pid > 0) { \
++ _parent_setup_; \
++ ret = eventfd_write(efd, 1); \
++ ASSERT_RETURN(ret >= 0); \
++ _parent_body_; \
++ rpid = waitpid(pid, &ret, 0); \
++ ASSERT_RETURN(rpid == pid); \
++ ASSERT_RETURN(WIFEXITED(ret)); \
++ ASSERT_RETURN(WEXITSTATUS(ret) == 0); \
++ ret = TEST_OK; \
++ } else { \
++ ret = -errno; \
++ *clone_ret = -errno; \
++ } \
++ close(efd); \
++ ret; \
++})
++
++/* Enums for parent if it should drop privs or not */
++enum kdbus_drop_parent {
++ DO_NOT_DROP,
++ DROP_SAME_UNPRIV,
++ DROP_OTHER_UNPRIV,
++};
++
++struct kdbus_conn {
++ int fd;
++ uint64_t id;
++ unsigned char *buf;
++};
++
++int kdbus_sysfs_get_parameter_mask(const char *path, uint64_t *mask);
++int kdbus_sysfs_set_parameter_mask(const char *path, uint64_t mask);
++
++int sys_memfd_create(const char *name, __u64 size);
++int sys_memfd_seal_set(int fd);
++off_t sys_memfd_get_size(int fd, off_t *size);
++
++int kdbus_list(struct kdbus_conn *conn, uint64_t flags);
++int kdbus_name_release(struct kdbus_conn *conn, const char *name);
++int kdbus_name_acquire(struct kdbus_conn *conn, const char *name,
++ uint64_t *flags);
++void kdbus_msg_free(struct kdbus_msg *msg);
++int kdbus_msg_recv(struct kdbus_conn *conn,
++ struct kdbus_msg **msg, uint64_t *offset);
++int kdbus_msg_recv_poll(struct kdbus_conn *conn, int timeout_ms,
++ struct kdbus_msg **msg_out, uint64_t *offset);
++int kdbus_free(const struct kdbus_conn *conn, uint64_t offset);
++int kdbus_msg_dump(const struct kdbus_conn *conn,
++ const struct kdbus_msg *msg);
++int kdbus_create_bus(int control_fd, const char *name,
++ uint64_t req_meta, uint64_t owner_meta,
++ char **path);
++int kdbus_msg_send(const struct kdbus_conn *conn, const char *name,
++ uint64_t cookie, uint64_t flags, uint64_t timeout,
++ int64_t priority, uint64_t dst_id);
++int kdbus_msg_send_sync(const struct kdbus_conn *conn, const char *name,
++ uint64_t cookie, uint64_t flags, uint64_t timeout,
++ int64_t priority, uint64_t dst_id, int cancel_fd);
++int kdbus_msg_send_reply(const struct kdbus_conn *conn,
++ uint64_t reply_cookie,
++ uint64_t dst_id);
++struct kdbus_conn *kdbus_hello(const char *path, uint64_t hello_flags,
++ const struct kdbus_item *item,
++ size_t item_size);
++struct kdbus_conn *kdbus_hello_registrar(const char *path, const char *name,
++ const struct kdbus_policy_access *access,
++ size_t num_access, uint64_t flags);
++struct kdbus_conn *kdbus_hello_activator(const char *path, const char *name,
++ const struct kdbus_policy_access *access,
++ size_t num_access);
++bool kdbus_item_in_message(struct kdbus_msg *msg, uint64_t type);
++int kdbus_bus_creator_info(struct kdbus_conn *conn,
++ uint64_t flags,
++ uint64_t *offset);
++int kdbus_conn_info(struct kdbus_conn *conn, uint64_t id,
++ const char *name, uint64_t flags, uint64_t *offset);
++void kdbus_conn_free(struct kdbus_conn *conn);
++int kdbus_conn_update_attach_flags(struct kdbus_conn *conn,
++ uint64_t attach_flags_send,
++ uint64_t attach_flags_recv);
++int kdbus_conn_update_policy(struct kdbus_conn *conn, const char *name,
++ const struct kdbus_policy_access *access,
++ size_t num_access);
++
++int kdbus_add_match_id(struct kdbus_conn *conn, uint64_t cookie,
++ uint64_t type, uint64_t id);
++int kdbus_add_match_empty(struct kdbus_conn *conn);
++
++int all_uids_gids_are_mapped();
++int drop_privileges(uid_t uid, gid_t gid);
++uint64_t now(clockid_t clock);
++char *unique_name(const char *prefix);
++
++int userns_map_uid_gid(pid_t pid,
++ const char *map_uid,
++ const char *map_gid);
++int test_is_capable(int cap, ...);
++int config_user_ns_is_enabled(void);
++int config_auditsyscall_is_enabled(void);
++int config_cgroups_is_enabled(void);
++int config_security_is_enabled(void);
+diff --git a/tools/testing/selftests/kdbus/test-activator.c b/tools/testing/selftests/kdbus/test-activator.c
+new file mode 100644
+index 0000000..3d1b763
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-activator.c
+@@ -0,0 +1,318 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stdbool.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <poll.h>
++#include <sys/capability.h>
++#include <sys/types.h>
++#include <sys/wait.h>
++
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++static int kdbus_starter_poll(struct kdbus_conn *conn)
++{
++ int ret;
++ struct pollfd fd;
++
++ fd.fd = conn->fd;
++ fd.events = POLLIN | POLLPRI | POLLHUP;
++ fd.revents = 0;
++
++ ret = poll(&fd, 1, 100);
++ if (ret == 0)
++ return -ETIMEDOUT;
++ else if (ret > 0) {
++ if (fd.revents & POLLIN)
++ return 0;
++
++ if (fd.revents & (POLLHUP | POLLERR))
++ ret = -ECONNRESET;
++ }
++
++ return ret;
++}
++
++/* Ensure that kdbus activator logic is safe */
++static int kdbus_priv_activator(struct kdbus_test_env *env)
++{
++ int ret;
++ struct kdbus_msg *msg = NULL;
++ uint64_t cookie = 0xdeadbeef;
++ uint64_t flags = KDBUS_NAME_REPLACE_EXISTING;
++ struct kdbus_conn *activator;
++ struct kdbus_conn *service;
++ struct kdbus_conn *client;
++ struct kdbus_conn *holder;
++ struct kdbus_policy_access *access;
++
++ access = (struct kdbus_policy_access[]){
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = getuid(),
++ .access = KDBUS_POLICY_OWN,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = getuid(),
++ .access = KDBUS_POLICY_TALK,
++ },
++ };
++
++ activator = kdbus_hello_activator(env->buspath, "foo.priv.activator",
++ access, 2);
++ ASSERT_RETURN(activator);
++
++ service = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(service);
++
++ client = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(client);
++
++ /*
++ * Make sure that other users can't TALK to the activator
++ */
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ /* Try to talk using the ID */
++ ret = kdbus_msg_send(unpriv, NULL, 0xdeadbeef, 0, 0,
++ 0, activator->id);
++ ASSERT_EXIT(ret == -ENXIO);
++
++ /* Try to talk to the name */
++ ret = kdbus_msg_send(unpriv, "foo.priv.activator",
++ 0xdeadbeef, 0, 0, 0,
++ KDBUS_DST_ID_NAME);
++ ASSERT_EXIT(ret == -EPERM);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure that we did not receive anything, so the
++ * service will not be started automatically
++ */
++
++ ret = kdbus_starter_poll(activator);
++ ASSERT_RETURN(ret == -ETIMEDOUT);
++
++ /*
++ * Now try to emulate the starter/service logic and
++ * acquire the name.
++ */
++
++ cookie++;
++ ret = kdbus_msg_send(service, "foo.priv.activator", cookie,
++ 0, 0, 0, KDBUS_DST_ID_NAME);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_starter_poll(activator);
++ ASSERT_RETURN(ret == 0);
++
++ /* Policies are still checked, access denied */
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "foo.priv.activator",
++ &flags);
++ ASSERT_RETURN(ret == -EPERM);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_name_acquire(service, "foo.priv.activator",
++ &flags);
++ ASSERT_RETURN(ret == 0);
++
++ /* We read our previous starter message */
++
++ ret = kdbus_msg_recv_poll(service, 100, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* Try to talk, we still fail */
++
++ cookie++;
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ /* Try to talk to the name */
++ ret = kdbus_msg_send(unpriv, "foo.priv.activator",
++ cookie, 0, 0, 0,
++ KDBUS_DST_ID_NAME);
++ ASSERT_EXIT(ret == -EPERM);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /* Still nothing to read */
++
++ ret = kdbus_msg_recv_poll(service, 100, NULL, NULL);
++ ASSERT_RETURN(ret == -ETIMEDOUT);
++
++ /* We receive every thing now */
++
++ cookie++;
++ ret = kdbus_msg_send(client, "foo.priv.activator", cookie,
++ 0, 0, 0, KDBUS_DST_ID_NAME);
++ ASSERT_RETURN(ret == 0);
++ ret = kdbus_msg_recv_poll(service, 100, &msg, NULL);
++ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++
++ /* Policies default to deny TALK now */
++ kdbus_conn_free(activator);
++
++ cookie++;
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ /* Try to talk to the name */
++ ret = kdbus_msg_send(unpriv, "foo.priv.activator",
++ cookie, 0, 0, 0,
++ KDBUS_DST_ID_NAME);
++ ASSERT_EXIT(ret == -EPERM);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(service, 100, NULL, NULL);
++ ASSERT_RETURN(ret == -ETIMEDOUT);
++
++ /* Same user is able to TALK */
++ cookie++;
++ ret = kdbus_msg_send(client, "foo.priv.activator", cookie,
++ 0, 0, 0, KDBUS_DST_ID_NAME);
++ ASSERT_RETURN(ret == 0);
++ ret = kdbus_msg_recv_poll(service, 100, &msg, NULL);
++ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++
++ access = (struct kdbus_policy_access []){
++ {
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = getuid(),
++ .access = KDBUS_POLICY_TALK,
++ },
++ };
++
++ holder = kdbus_hello_registrar(env->buspath, "foo.priv.activator",
++ access, 1, KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(holder);
++
++ /* Now we are able to TALK to the name */
++
++ cookie++;
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ /* Try to talk to the name */
++ ret = kdbus_msg_send(unpriv, "foo.priv.activator",
++ cookie, 0, 0, 0,
++ KDBUS_DST_ID_NAME);
++ ASSERT_EXIT(ret == 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(service, 100, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "foo.priv.activator",
++ &flags);
++ ASSERT_RETURN(ret == -EPERM);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ kdbus_conn_free(service);
++ kdbus_conn_free(client);
++ kdbus_conn_free(holder);
++
++ return 0;
++}
++
++int kdbus_test_activator(struct kdbus_test_env *env)
++{
++ int ret;
++ struct kdbus_conn *activator;
++ struct pollfd fds[2];
++ bool activator_done = false;
++ struct kdbus_policy_access access[2];
++
++ access[0].type = KDBUS_POLICY_ACCESS_USER;
++ access[0].id = getuid();
++ access[0].access = KDBUS_POLICY_OWN;
++
++ access[1].type = KDBUS_POLICY_ACCESS_WORLD;
++ access[1].access = KDBUS_POLICY_TALK;
++
++ activator = kdbus_hello_activator(env->buspath, "foo.test.activator",
++ access, 2);
++ ASSERT_RETURN(activator);
++
++ ret = kdbus_add_match_empty(env->conn);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_list(env->conn, KDBUS_LIST_NAMES |
++ KDBUS_LIST_UNIQUE |
++ KDBUS_LIST_ACTIVATORS |
++ KDBUS_LIST_QUEUED);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_send(env->conn, "foo.test.activator", 0xdeafbeef,
++ 0, 0, 0, KDBUS_DST_ID_NAME);
++ ASSERT_RETURN(ret == 0);
++
++ fds[0].fd = activator->fd;
++ fds[1].fd = env->conn->fd;
++
++ kdbus_printf("-- entering poll loop ...\n");
++
++ for (;;) {
++ int i, nfds = sizeof(fds) / sizeof(fds[0]);
++
++ for (i = 0; i < nfds; i++) {
++ fds[i].events = POLLIN | POLLPRI;
++ fds[i].revents = 0;
++ }
++
++ ret = poll(fds, nfds, 3000);
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_list(env->conn, KDBUS_LIST_NAMES);
++ ASSERT_RETURN(ret == 0);
++
++ if ((fds[0].revents & POLLIN) && !activator_done) {
++ uint64_t flags = KDBUS_NAME_REPLACE_EXISTING;
++
++ kdbus_printf("Starter was called back!\n");
++
++ ret = kdbus_name_acquire(env->conn,
++ "foo.test.activator", &flags);
++ ASSERT_RETURN(ret == 0);
++
++ activator_done = true;
++ }
++
++ if (fds[1].revents & POLLIN) {
++ kdbus_msg_recv(env->conn, NULL, NULL);
++ break;
++ }
++ }
++
++ /* Check if all uids/gids are mapped */
++ if (!all_uids_gids_are_mapped())
++ return TEST_SKIP;
++
++ /* Check now capabilities, so we run the previous tests */
++ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
++ ASSERT_RETURN(ret >= 0);
++
++ if (!ret)
++ return TEST_SKIP;
++
++ ret = kdbus_priv_activator(env);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(activator);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-attach-flags.c b/tools/testing/selftests/kdbus/test-attach-flags.c
+new file mode 100644
+index 0000000..deee7c3
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-attach-flags.c
+@@ -0,0 +1,750 @@
++#include <stdio.h>
++#include <string.h>
++#include <stdlib.h>
++#include <stdbool.h>
++#include <stddef.h>
++#include <fcntl.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <sys/capability.h>
++#include <sys/mman.h>
++#include <sys/stat.h>
++#include <sys/types.h>
++#include <linux/unistd.h>
++
++#include "kdbus-api.h"
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++/*
++ * Should be the sum of the currently supported and compiled-in
++ * KDBUS_ITEMS_* that reflect KDBUS_ATTACH_* flags.
++ */
++static unsigned int KDBUS_TEST_ITEMS_SUM = KDBUS_ATTACH_ITEMS_TYPE_SUM;
++
++static struct kdbus_conn *__kdbus_hello(const char *path, uint64_t flags,
++ uint64_t attach_flags_send,
++ uint64_t attach_flags_recv)
++{
++ struct kdbus_cmd_free cmd_free = {};
++ int ret, fd;
++ struct kdbus_conn *conn;
++ struct {
++ struct kdbus_cmd_hello hello;
++
++ struct {
++ uint64_t size;
++ uint64_t type;
++ char str[16];
++ } conn_name;
++
++ uint8_t extra_items[0];
++ } h;
++
++ memset(&h, 0, sizeof(h));
++
++ kdbus_printf("-- opening bus connection %s\n", path);
++ fd = open(path, O_RDWR|O_CLOEXEC);
++ if (fd < 0) {
++ kdbus_printf("--- error %d (%m)\n", fd);
++ return NULL;
++ }
++
++ h.hello.flags = flags | KDBUS_HELLO_ACCEPT_FD;
++ h.hello.attach_flags_send = attach_flags_send;
++ h.hello.attach_flags_recv = attach_flags_recv;
++ h.conn_name.type = KDBUS_ITEM_CONN_DESCRIPTION;
++ strcpy(h.conn_name.str, "this-is-my-name");
++ h.conn_name.size = KDBUS_ITEM_HEADER_SIZE + strlen(h.conn_name.str) + 1;
++
++ h.hello.size = sizeof(h);
++ h.hello.pool_size = POOL_SIZE;
++
++ ret = kdbus_cmd_hello(fd, (struct kdbus_cmd_hello *) &h.hello);
++ if (ret < 0) {
++ kdbus_printf("--- error when saying hello: %d (%m)\n", ret);
++ return NULL;
++ }
++
++ kdbus_printf("-- New connection ID : %llu\n",
++ (unsigned long long)h.hello.id);
++
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.offset = h.hello.offset;
++ ret = kdbus_cmd_free(fd, &cmd_free);
++ if (ret < 0)
++ return NULL;
++
++ conn = malloc(sizeof(*conn));
++ if (!conn) {
++ kdbus_printf("unable to malloc()!?\n");
++ return NULL;
++ }
++
++ conn->buf = mmap(NULL, POOL_SIZE, PROT_READ, MAP_SHARED, fd, 0);
++ if (conn->buf == MAP_FAILED) {
++ ret = -errno;
++ free(conn);
++ close(fd);
++ kdbus_printf("--- error mmap: %d (%m)\n", ret);
++ return NULL;
++ }
++
++ conn->fd = fd;
++ conn->id = h.hello.id;
++ return conn;
++}
++
++static int kdbus_test_peers_creation(struct kdbus_test_env *env)
++{
++ int ret;
++ int control_fd;
++ char *path;
++ char *busname;
++ char buspath[2048];
++ char control_path[2048];
++ uint64_t attach_flags_mask;
++ struct kdbus_conn *conn;
++
++ snprintf(control_path, sizeof(control_path),
++ "%s/control", env->root);
++
++ /*
++ * Set kdbus system-wide mask to 0, this has nothing
++ * to do with the following tests, bus and connection
++ * creation nor connection update, but we do it so we are
++ * sure that everything work as expected
++ */
++
++ attach_flags_mask = 0;
++ ret = kdbus_sysfs_set_parameter_mask(env->mask_param_path,
++ attach_flags_mask);
++ ASSERT_RETURN(ret == 0);
++
++
++ /*
++ * Create bus with a full set of ATTACH flags
++ */
++
++ control_fd = open(control_path, O_RDWR);
++ ASSERT_RETURN(control_fd >= 0);
++
++ busname = unique_name("test-peers-creation-bus");
++ ASSERT_RETURN(busname);
++
++ ret = kdbus_create_bus(control_fd, busname, _KDBUS_ATTACH_ALL,
++ 0, &path);
++ ASSERT_RETURN(ret == 0);
++
++ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
++
++ /*
++ * Create a connection with an empty send attach flags, or
++ * with just KDBUS_ATTACH_CREDS, this should fail
++ */
++ conn = __kdbus_hello(buspath, 0, 0, 0);
++ ASSERT_RETURN(conn == NULL);
++ ASSERT_RETURN(errno == ECONNREFUSED);
++
++ conn = __kdbus_hello(buspath, 0, KDBUS_ATTACH_CREDS,
++ _KDBUS_ATTACH_ALL);
++ ASSERT_RETURN(conn == NULL);
++ ASSERT_RETURN(errno == ECONNREFUSED);
++
++ conn = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
++ ASSERT_RETURN(conn);
++
++ /* Try to cut back some send attach flags */
++ ret = kdbus_conn_update_attach_flags(conn,
++ KDBUS_ATTACH_CREDS|
++ KDBUS_ATTACH_PIDS,
++ _KDBUS_ATTACH_ALL);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ ret = kdbus_conn_update_attach_flags(conn,
++ _KDBUS_ATTACH_ALL, 0);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(conn);
++ free(path);
++ free(busname);
++ close(control_fd);
++
++
++ /* Test a new bus with KDBUS_ATTACH_PIDS */
++
++ control_fd = open(control_path, O_RDWR);
++ ASSERT_RETURN(control_fd >= 0);
++
++ busname = unique_name("test-peer-flags-bus");
++ ASSERT_RETURN(busname);
++
++ ret = kdbus_create_bus(control_fd, busname, KDBUS_ATTACH_PIDS,
++ 0, &path);
++ ASSERT_RETURN(ret == 0);
++
++ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
++
++ /*
++ * Create a connection with an empty send attach flags, or
++ * all flags except KDBUS_ATTACH_PIDS
++ */
++ conn = __kdbus_hello(buspath, 0, 0, 0);
++ ASSERT_RETURN(conn == NULL);
++ ASSERT_RETURN(errno == ECONNREFUSED);
++
++ conn = __kdbus_hello(buspath, 0,
++ _KDBUS_ATTACH_ALL & ~KDBUS_ATTACH_PIDS,
++ _KDBUS_ATTACH_ALL);
++ ASSERT_RETURN(conn == NULL);
++ ASSERT_RETURN(errno == ECONNREFUSED);
++
++ /* The following should succeed */
++ conn = __kdbus_hello(buspath, 0, KDBUS_ATTACH_PIDS, 0);
++ ASSERT_RETURN(conn);
++ kdbus_conn_free(conn);
++
++ conn = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
++ ASSERT_RETURN(conn);
++
++ ret = kdbus_conn_update_attach_flags(conn,
++ _KDBUS_ATTACH_ALL &
++ ~KDBUS_ATTACH_PIDS,
++ _KDBUS_ATTACH_ALL);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ ret = kdbus_conn_update_attach_flags(conn, 0,
++ _KDBUS_ATTACH_ALL);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* Now we want only KDBUS_ATTACH_PIDS */
++ ret = kdbus_conn_update_attach_flags(conn,
++ KDBUS_ATTACH_PIDS, 0);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(conn);
++ free(path);
++ free(busname);
++ close(control_fd);
++
++
++ /*
++ * Create bus with 0 as ATTACH flags, the bus does not
++ * require any attach flags
++ */
++
++ control_fd = open(control_path, O_RDWR);
++ ASSERT_RETURN(control_fd >= 0);
++
++ busname = unique_name("test-peer-flags-bus");
++ ASSERT_RETURN(busname);
++
++ ret = kdbus_create_bus(control_fd, busname, 0, 0, &path);
++ ASSERT_RETURN(ret == 0);
++
++ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
++
++ /* Bus is open it does not require any send attach flags */
++ conn = __kdbus_hello(buspath, 0, 0, 0);
++ ASSERT_RETURN(conn);
++ kdbus_conn_free(conn);
++
++ conn = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
++ ASSERT_RETURN(conn);
++
++ ret = kdbus_conn_update_attach_flags(conn, 0, 0);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_conn_update_attach_flags(conn, KDBUS_ATTACH_CREDS, 0);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(conn);
++ free(path);
++ free(busname);
++ close(control_fd);
++
++ return 0;
++}
++
++static int kdbus_test_peers_info(struct kdbus_test_env *env)
++{
++ int ret;
++ int control_fd;
++ char *path;
++ char *busname;
++ unsigned int i = 0;
++ uint64_t offset = 0;
++ char buspath[2048];
++ char control_path[2048];
++ uint64_t attach_flags_mask;
++ struct kdbus_item *item;
++ struct kdbus_info *info;
++ struct kdbus_conn *conn;
++ struct kdbus_conn *reader;
++ unsigned long long attach_count = 0;
++
++ snprintf(control_path, sizeof(control_path),
++ "%s/control", env->root);
++
++ attach_flags_mask = 0;
++ ret = kdbus_sysfs_set_parameter_mask(env->mask_param_path,
++ attach_flags_mask);
++ ASSERT_RETURN(ret == 0);
++
++ control_fd = open(control_path, O_RDWR);
++ ASSERT_RETURN(control_fd >= 0);
++
++ busname = unique_name("test-peers-info-bus");
++ ASSERT_RETURN(busname);
++
++ ret = kdbus_create_bus(control_fd, busname, _KDBUS_ATTACH_ALL,
++ 0, &path);
++ ASSERT_RETURN(ret == 0);
++
++ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
++
++ /* Create connections with the appropriate flags */
++ conn = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
++ ASSERT_RETURN(conn);
++
++ reader = __kdbus_hello(buspath, 0, _KDBUS_ATTACH_ALL, 0);
++ ASSERT_RETURN(reader);
++
++ ret = kdbus_conn_info(reader, conn->id, NULL,
++ _KDBUS_ATTACH_ALL, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(reader->buf + offset);
++ ASSERT_RETURN(info->id == conn->id);
++
++ /* all attach flags are masked, no metadata */
++ KDBUS_ITEM_FOREACH(item, info, items)
++ i++;
++
++ ASSERT_RETURN(i == 0);
++
++ kdbus_free(reader, offset);
++
++ /* Set the mask to _KDBUS_ATTACH_ANY */
++ attach_flags_mask = _KDBUS_ATTACH_ANY;
++ ret = kdbus_sysfs_set_parameter_mask(env->mask_param_path,
++ attach_flags_mask);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_conn_info(reader, conn->id, NULL,
++ _KDBUS_ATTACH_ALL, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(reader->buf + offset);
++ ASSERT_RETURN(info->id == conn->id);
++
++ attach_count = 0;
++ KDBUS_ITEM_FOREACH(item, info, items)
++ attach_count += item->type;
++
++ /*
++ * All flags have been returned except for:
++ * KDBUS_ITEM_TIMESTAMP and
++ * KDBUS_ITEM_OWNED_NAME we do not own any name.
++ */
++ ASSERT_RETURN(attach_count == (KDBUS_TEST_ITEMS_SUM -
++ KDBUS_ITEM_OWNED_NAME -
++ KDBUS_ITEM_TIMESTAMP));
++
++ kdbus_free(reader, offset);
++
++ /* Request only OWNED names */
++ ret = kdbus_conn_info(reader, conn->id, NULL,
++ KDBUS_ATTACH_NAMES, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(reader->buf + offset);
++ ASSERT_RETURN(info->id == conn->id);
++
++ attach_count = 0;
++ KDBUS_ITEM_FOREACH(item, info, items)
++ attach_count += item->type;
++
++ /* we should not get any metadata since we do not own names */
++ ASSERT_RETURN(attach_count == 0);
++
++ kdbus_free(reader, offset);
++
++ kdbus_conn_free(conn);
++ kdbus_conn_free(reader);
++
++ return 0;
++}
++
++/**
++ * @kdbus_mask_param: kdbus module mask parameter (system-wide)
++ * @requested_meta: The bus owner metadata that we want
++ * @expected_items: The returned KDBUS_ITEMS_* sum. Used to
++ * validate the returned metadata items
++ */
++static int kdbus_cmp_bus_creator_metadata(struct kdbus_test_env *env,
++ struct kdbus_conn *conn,
++ uint64_t kdbus_mask_param,
++ uint64_t requested_meta,
++ unsigned long expected_items)
++{
++ int ret;
++ uint64_t offset = 0;
++ struct kdbus_info *info;
++ struct kdbus_item *item;
++ unsigned long attach_count = 0;
++
++ ret = kdbus_sysfs_set_parameter_mask(env->mask_param_path,
++ kdbus_mask_param);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_bus_creator_info(conn, requested_meta, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(conn->buf + offset);
++
++ KDBUS_ITEM_FOREACH(item, info, items)
++ attach_count += item->type;
++
++ ASSERT_RETURN(attach_count == expected_items);
++
++ ret = kdbus_free(conn, offset);
++ ASSERT_RETURN(ret == 0);
++
++ return 0;
++}
++
++static int kdbus_test_bus_creator_info(struct kdbus_test_env *env)
++{
++ int ret;
++ int control_fd;
++ char *path;
++ char *busname;
++ char buspath[2048];
++ char control_path[2048];
++ uint64_t attach_flags_mask;
++ struct kdbus_conn *conn;
++ unsigned long expected_items = 0;
++
++ snprintf(control_path, sizeof(control_path),
++ "%s/control", env->root);
++
++ control_fd = open(control_path, O_RDWR);
++ ASSERT_RETURN(control_fd >= 0);
++
++ busname = unique_name("test-peers-info-bus");
++ ASSERT_RETURN(busname);
++
++ /*
++ * Now the bus allows us to see all its KDBUS_ATTACH_*
++ * items
++ */
++ ret = kdbus_create_bus(control_fd, busname, 0,
++ _KDBUS_ATTACH_ALL, &path);
++ ASSERT_RETURN(ret == 0);
++
++ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
++
++ conn = __kdbus_hello(buspath, 0, 0, 0);
++ ASSERT_RETURN(conn);
++
++ /*
++ * Start with a kdbus module mask set to _KDBUS_ATTACH_ANY
++ */
++ attach_flags_mask = _KDBUS_ATTACH_ANY;
++
++ /*
++ * All flags will be returned except for:
++ * KDBUS_ITEM_TIMESTAMP
++ * KDBUS_ITEM_OWNED_NAME
++ * KDBUS_ITEM_CONN_DESCRIPTION
++ *
++ * An extra flags is always returned KDBUS_ITEM_MAKE_NAME
++ * which contains the bus name
++ */
++ expected_items = KDBUS_TEST_ITEMS_SUM + KDBUS_ITEM_MAKE_NAME;
++ expected_items -= KDBUS_ITEM_TIMESTAMP +
++ KDBUS_ITEM_OWNED_NAME +
++ KDBUS_ITEM_CONN_DESCRIPTION;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ _KDBUS_ATTACH_ALL,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * We should have:
++ * KDBUS_ITEM_PIDS + KDBUS_ITEM_CREDS + KDBUS_ITEM_MAKE_NAME
++ */
++ expected_items = KDBUS_ITEM_PIDS + KDBUS_ITEM_CREDS +
++ KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ KDBUS_ATTACH_PIDS |
++ KDBUS_ATTACH_CREDS,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ /* KDBUS_ITEM_MAKE_NAME is always returned */
++ expected_items = KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ 0, expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Restrict kdbus system-wide mask to KDBUS_ATTACH_PIDS
++ */
++
++ attach_flags_mask = KDBUS_ATTACH_PIDS;
++
++ /*
++ * We should have:
++ * KDBUS_ITEM_PIDS + KDBUS_ITEM_MAKE_NAME
++ */
++ expected_items = KDBUS_ITEM_PIDS + KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ _KDBUS_ATTACH_ALL,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++
++ /* system-wide mask to 0 */
++ attach_flags_mask = 0;
++
++ /* we should only see: KDBUS_ITEM_MAKE_NAME */
++ expected_items = KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ _KDBUS_ATTACH_ALL,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(conn);
++ free(path);
++ free(busname);
++ close(control_fd);
++
++
++ /*
++ * A new bus that hides all its owner metadata
++ */
++
++ control_fd = open(control_path, O_RDWR);
++ ASSERT_RETURN(control_fd >= 0);
++
++ busname = unique_name("test-peers-info-bus");
++ ASSERT_RETURN(busname);
++
++ ret = kdbus_create_bus(control_fd, busname, 0, 0, &path);
++ ASSERT_RETURN(ret == 0);
++
++ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
++
++ conn = __kdbus_hello(buspath, 0, 0, 0);
++ ASSERT_RETURN(conn);
++
++ /*
++ * Start with a kdbus module mask set to _KDBUS_ATTACH_ANY
++ */
++ attach_flags_mask = _KDBUS_ATTACH_ANY;
++
++ /*
++ * We only get the KDBUS_ITEM_MAKE_NAME
++ */
++ expected_items = KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ _KDBUS_ATTACH_ALL,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * We still get only kdbus_ITEM_MAKE_NAME
++ */
++ attach_flags_mask = 0;
++ expected_items = KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ _KDBUS_ATTACH_ALL,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(conn);
++ free(path);
++ free(busname);
++ close(control_fd);
++
++
++ /*
++ * A new bus that shows only the PID and CREDS metadata
++ * of the bus owner.
++ */
++ control_fd = open(control_path, O_RDWR);
++ ASSERT_RETURN(control_fd >= 0);
++
++ busname = unique_name("test-peers-info-bus");
++ ASSERT_RETURN(busname);
++
++ ret = kdbus_create_bus(control_fd, busname, 0,
++ KDBUS_ATTACH_PIDS|
++ KDBUS_ATTACH_CREDS, &path);
++ ASSERT_RETURN(ret == 0);
++
++ snprintf(buspath, sizeof(buspath), "%s/%s/bus", env->root, path);
++
++ conn = __kdbus_hello(buspath, 0, 0, 0);
++ ASSERT_RETURN(conn);
++
++ /*
++ * Start with a kdbus module mask set to _KDBUS_ATTACH_ANY
++ */
++ attach_flags_mask = _KDBUS_ATTACH_ANY;
++
++ /*
++ * We should have:
++ * KDBUS_ITEM_PIDS + KDBUS_ITEM_CREDS + KDBUS_ITEM_MAKE_NAME
++ */
++ expected_items = KDBUS_ITEM_PIDS + KDBUS_ITEM_CREDS +
++ KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ _KDBUS_ATTACH_ALL,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ expected_items = KDBUS_ITEM_CREDS + KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ KDBUS_ATTACH_CREDS,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ /* KDBUS_ITEM_MAKE_NAME is always returned */
++ expected_items = KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ 0, expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Restrict kdbus system-wide mask to KDBUS_ATTACH_PIDS
++ */
++
++ attach_flags_mask = KDBUS_ATTACH_PIDS;
++ /*
++ * We should have:
++ * KDBUS_ITEM_PIDS + KDBUS_ITEM_MAKE_NAME
++ */
++ expected_items = KDBUS_ITEM_PIDS + KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ _KDBUS_ATTACH_ALL,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ /* No KDBUS_ATTACH_CREDS */
++ expected_items = KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ KDBUS_ATTACH_CREDS,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++ /* system-wide mask to 0 */
++ attach_flags_mask = 0;
++
++ /* we should only see: KDBUS_ITEM_MAKE_NAME */
++ expected_items = KDBUS_ITEM_MAKE_NAME;
++ ret = kdbus_cmp_bus_creator_metadata(env, conn,
++ attach_flags_mask,
++ _KDBUS_ATTACH_ALL,
++ expected_items);
++ ASSERT_RETURN(ret == 0);
++
++
++ kdbus_conn_free(conn);
++ free(path);
++ free(busname);
++ close(control_fd);
++
++ return 0;
++}
++
++int kdbus_test_attach_flags(struct kdbus_test_env *env)
++{
++ int ret;
++ uint64_t flags_mask;
++ uint64_t old_kdbus_flags_mask;
++
++ /* We need CAP_DAC_OVERRIDE to overwrite the kdbus mask */
++ ret = test_is_capable(CAP_DAC_OVERRIDE, -1);
++ ASSERT_RETURN(ret >= 0);
++
++ /* no enough privileges, SKIP test */
++ if (!ret)
++ return TEST_SKIP;
++
++ /*
++ * We need to be able to write to
++ * "/sys/module/kdbus/parameters/attach_flags_mask"
++ * perhaps we are unprvileged/privileged in its userns
++ */
++ ret = access(env->mask_param_path, W_OK);
++ if (ret < 0) {
++ kdbus_printf("--- access() '%s' failed: %d (%m)\n",
++ env->mask_param_path, -errno);
++ return TEST_SKIP;
++ }
++
++ ret = kdbus_sysfs_get_parameter_mask(env->mask_param_path,
++ &old_kdbus_flags_mask);
++ ASSERT_RETURN(ret == 0);
++
++ /* setup the right KDBUS_TEST_ITEMS_SUM */
++ if (!config_auditsyscall_is_enabled())
++ KDBUS_TEST_ITEMS_SUM -= KDBUS_ITEM_AUDIT;
++
++ if (!config_cgroups_is_enabled())
++ KDBUS_TEST_ITEMS_SUM -= KDBUS_ITEM_CGROUP;
++
++ if (!config_security_is_enabled())
++ KDBUS_TEST_ITEMS_SUM -= KDBUS_ITEM_SECLABEL;
++
++ /*
++ * Test the connection creation attach flags
++ */
++ ret = kdbus_test_peers_creation(env);
++ /* Restore previous kdbus mask */
++ kdbus_sysfs_set_parameter_mask(env->mask_param_path,
++ old_kdbus_flags_mask);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Test the CONN_INFO attach flags
++ */
++ ret = kdbus_test_peers_info(env);
++ /* Restore previous kdbus mask */
++ kdbus_sysfs_set_parameter_mask(env->mask_param_path,
++ old_kdbus_flags_mask);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Test the Bus creator info and its attach flags
++ */
++ ret = kdbus_test_bus_creator_info(env);
++ /* Restore previous kdbus mask */
++ kdbus_sysfs_set_parameter_mask(env->mask_param_path,
++ old_kdbus_flags_mask);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_sysfs_get_parameter_mask(env->mask_param_path,
++ &flags_mask);
++ ASSERT_RETURN(ret == 0 && old_kdbus_flags_mask == flags_mask);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-benchmark.c b/tools/testing/selftests/kdbus/test-benchmark.c
+new file mode 100644
+index 0000000..8a9744b
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-benchmark.c
+@@ -0,0 +1,451 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <locale.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <stdbool.h>
++#include <errno.h>
++#include <assert.h>
++#include <poll.h>
++#include <sys/time.h>
++#include <sys/mman.h>
++#include <sys/socket.h>
++#include <math.h>
++
++#include "kdbus-api.h"
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++#define SERVICE_NAME "foo.bar.echo"
++
++/*
++ * To have a banchmark comparison with unix socket, set:
++ * user_memfd = false;
++ * compare_uds = true;
++ * attach_none = true; do not attached metadata
++ */
++
++static bool use_memfd = true; /* transmit memfd? */
++static bool compare_uds = false; /* unix-socket comparison? */
++static bool attach_none = false; /* clear attach-flags? */
++static char stress_payload[8192];
++
++struct stats {
++ uint64_t count;
++ uint64_t latency_acc;
++ uint64_t latency_low;
++ uint64_t latency_high;
++ uint64_t latency_avg;
++ uint64_t latency_ssquares;
++};
++
++static struct stats stats;
++
++static void reset_stats(void)
++{
++ stats.count = 0;
++ stats.latency_acc = 0;
++ stats.latency_low = UINT64_MAX;
++ stats.latency_high = 0;
++ stats.latency_avg = 0;
++ stats.latency_ssquares = 0;
++}
++
++static void dump_stats(bool is_uds)
++{
++ if (stats.count > 0) {
++ kdbus_printf("stats %s: %'llu packets processed, latency (nsecs) min/max/avg/dev %'7llu // %'7llu // %'7llu // %'7.f\n",
++ is_uds ? " (UNIX)" : "(KDBUS)",
++ (unsigned long long) stats.count,
++ (unsigned long long) stats.latency_low,
++ (unsigned long long) stats.latency_high,
++ (unsigned long long) stats.latency_avg,
++ sqrt(stats.latency_ssquares / stats.count));
++ } else {
++ kdbus_printf("*** no packets received. bus stuck?\n");
++ }
++}
++
++static void add_stats(uint64_t prev)
++{
++ uint64_t diff, latency_avg_prev;
++
++ diff = now(CLOCK_THREAD_CPUTIME_ID) - prev;
++
++ stats.count++;
++ stats.latency_acc += diff;
++
++ /* see Welford62 */
++ latency_avg_prev = stats.latency_avg;
++ stats.latency_avg = stats.latency_acc / stats.count;
++ stats.latency_ssquares += (diff - latency_avg_prev) * (diff - stats.latency_avg);
++
++ if (stats.latency_low > diff)
++ stats.latency_low = diff;
++
++ if (stats.latency_high < diff)
++ stats.latency_high = diff;
++}
++
++static int setup_simple_kdbus_msg(struct kdbus_conn *conn,
++ uint64_t dst_id,
++ struct kdbus_msg **msg_out)
++{
++ struct kdbus_msg *msg;
++ struct kdbus_item *item;
++ uint64_t size;
++
++ size = sizeof(struct kdbus_msg);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++
++ msg = malloc(size);
++ ASSERT_RETURN_VAL(msg, -ENOMEM);
++
++ memset(msg, 0, size);
++ msg->size = size;
++ msg->src_id = conn->id;
++ msg->dst_id = dst_id;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++
++ item = msg->items;
++
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t) stress_payload;
++ item->vec.size = sizeof(stress_payload);
++ item = KDBUS_ITEM_NEXT(item);
++
++ *msg_out = msg;
++
++ return 0;
++}
++
++static int setup_memfd_kdbus_msg(struct kdbus_conn *conn,
++ uint64_t dst_id,
++ off_t *memfd_item_offset,
++ struct kdbus_msg **msg_out)
++{
++ struct kdbus_msg *msg;
++ struct kdbus_item *item;
++ uint64_t size;
++
++ size = sizeof(struct kdbus_msg);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
++
++ msg = malloc(size);
++ ASSERT_RETURN_VAL(msg, -ENOMEM);
++
++ memset(msg, 0, size);
++ msg->size = size;
++ msg->src_id = conn->id;
++ msg->dst_id = dst_id;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++
++ item = msg->items;
++
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t) stress_payload;
++ item->vec.size = sizeof(stress_payload);
++ item = KDBUS_ITEM_NEXT(item);
++
++ item->type = KDBUS_ITEM_PAYLOAD_MEMFD;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_memfd);
++ item->memfd.size = sizeof(uint64_t);
++
++ *memfd_item_offset = (unsigned char *)item - (unsigned char *)msg;
++ *msg_out = msg;
++
++ return 0;
++}
++
++static int
++send_echo_request(struct kdbus_conn *conn, uint64_t dst_id,
++ void *kdbus_msg, off_t memfd_item_offset)
++{
++ struct kdbus_cmd_send cmd = {};
++ int memfd = -1;
++ int ret;
++
++ if (use_memfd) {
++ uint64_t now_ns = now(CLOCK_THREAD_CPUTIME_ID);
++ struct kdbus_item *item = memfd_item_offset + kdbus_msg;
++ memfd = sys_memfd_create("memfd-name", 0);
++ ASSERT_RETURN_VAL(memfd >= 0, memfd);
++
++ ret = write(memfd, &now_ns, sizeof(now_ns));
++ ASSERT_RETURN_VAL(ret == sizeof(now_ns), -EAGAIN);
++
++ ret = sys_memfd_seal_set(memfd);
++ ASSERT_RETURN_VAL(ret == 0, -errno);
++
++ item->memfd.fd = memfd;
++ }
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)kdbus_msg;
++
++ ret = kdbus_cmd_send(conn->fd, &cmd);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ close(memfd);
++
++ return 0;
++}
++
++static int
++handle_echo_reply(struct kdbus_conn *conn, uint64_t send_ns)
++{
++ int ret;
++ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
++ struct kdbus_msg *msg;
++ const struct kdbus_item *item;
++ bool has_memfd = false;
++
++ ret = kdbus_cmd_recv(conn->fd, &recv);
++ if (ret == -EAGAIN)
++ return ret;
++
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ if (!use_memfd)
++ goto out;
++
++ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
++
++ KDBUS_ITEM_FOREACH(item, msg, items) {
++ switch (item->type) {
++ case KDBUS_ITEM_PAYLOAD_MEMFD: {
++ char *buf;
++
++ buf = mmap(NULL, item->memfd.size, PROT_READ,
++ MAP_PRIVATE, item->memfd.fd, 0);
++ ASSERT_RETURN_VAL(buf != MAP_FAILED, -EINVAL);
++ ASSERT_RETURN_VAL(item->memfd.size == sizeof(uint64_t),
++ -EINVAL);
++
++ add_stats(*(uint64_t*)buf);
++ munmap(buf, item->memfd.size);
++ close(item->memfd.fd);
++ has_memfd = true;
++ break;
++ }
++
++ case KDBUS_ITEM_PAYLOAD_OFF:
++ /* ignore */
++ break;
++ }
++ }
++
++out:
++ if (!has_memfd)
++ add_stats(send_ns);
++
++ ret = kdbus_free(conn, recv.msg.offset);
++ ASSERT_RETURN_VAL(ret == 0, -errno);
++
++ return 0;
++}
++
++static int benchmark(struct kdbus_test_env *env)
++{
++ static char buf[sizeof(stress_payload)];
++ struct kdbus_msg *kdbus_msg = NULL;
++ off_t memfd_cached_offset = 0;
++ int ret;
++ struct kdbus_conn *conn_a, *conn_b;
++ struct pollfd fds[2];
++ uint64_t start, send_ns, now_ns, diff;
++ unsigned int i;
++ int uds[2];
++
++ setlocale(LC_ALL, "");
++
++ for (i = 0; i < sizeof(stress_payload); i++)
++ stress_payload[i] = i;
++
++ /* setup kdbus pair */
++
++ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_a && conn_b);
++
++ ret = kdbus_add_match_empty(conn_a);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_add_match_empty(conn_b);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_acquire(conn_a, SERVICE_NAME, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ if (attach_none) {
++ ret = kdbus_conn_update_attach_flags(conn_a,
++ _KDBUS_ATTACH_ALL,
++ 0);
++ ASSERT_RETURN(ret == 0);
++ }
++
++ /* setup UDS pair */
++
++ ret = socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK, 0, uds);
++ ASSERT_RETURN(ret == 0);
++
++ /* setup a kdbus msg now */
++ if (use_memfd) {
++ ret = setup_memfd_kdbus_msg(conn_b, conn_a->id,
++ &memfd_cached_offset,
++ &kdbus_msg);
++ ASSERT_RETURN(ret == 0);
++ } else {
++ ret = setup_simple_kdbus_msg(conn_b, conn_a->id, &kdbus_msg);
++ ASSERT_RETURN(ret == 0);
++ }
++
++ /* start benchmark */
++
++ kdbus_printf("-- entering poll loop ...\n");
++
++ do {
++ /* run kdbus benchmark */
++ fds[0].fd = conn_a->fd;
++ fds[1].fd = conn_b->fd;
++
++ /* cancel any pending message */
++ handle_echo_reply(conn_a, 0);
++
++ start = now(CLOCK_THREAD_CPUTIME_ID);
++ reset_stats();
++
++ send_ns = now(CLOCK_THREAD_CPUTIME_ID);
++ ret = send_echo_request(conn_b, conn_a->id,
++ kdbus_msg, memfd_cached_offset);
++ ASSERT_RETURN(ret == 0);
++
++ while (1) {
++ unsigned int nfds = sizeof(fds) / sizeof(fds[0]);
++ unsigned int i;
++
++ for (i = 0; i < nfds; i++) {
++ fds[i].events = POLLIN | POLLPRI | POLLHUP;
++ fds[i].revents = 0;
++ }
++
++ ret = poll(fds, nfds, 10);
++ if (ret < 0)
++ break;
++
++ if (fds[0].revents & POLLIN) {
++ ret = handle_echo_reply(conn_a, send_ns);
++ ASSERT_RETURN(ret == 0);
++
++ send_ns = now(CLOCK_THREAD_CPUTIME_ID);
++ ret = send_echo_request(conn_b, conn_a->id,
++ kdbus_msg,
++ memfd_cached_offset);
++ ASSERT_RETURN(ret == 0);
++ }
++
++ now_ns = now(CLOCK_THREAD_CPUTIME_ID);
++ diff = now_ns - start;
++ if (diff > 1000000000ULL) {
++ start = now_ns;
++
++ dump_stats(false);
++ break;
++ }
++ }
++
++ if (!compare_uds)
++ continue;
++
++ /* run unix-socket benchmark as comparison */
++
++ fds[0].fd = uds[0];
++ fds[1].fd = uds[1];
++
++ /* cancel any pendign message */
++ read(uds[1], buf, sizeof(buf));
++
++ start = now(CLOCK_THREAD_CPUTIME_ID);
++ reset_stats();
++
++ send_ns = now(CLOCK_THREAD_CPUTIME_ID);
++ ret = write(uds[0], stress_payload, sizeof(stress_payload));
++ ASSERT_RETURN(ret == sizeof(stress_payload));
++
++ while (1) {
++ unsigned int nfds = sizeof(fds) / sizeof(fds[0]);
++ unsigned int i;
++
++ for (i = 0; i < nfds; i++) {
++ fds[i].events = POLLIN | POLLPRI | POLLHUP;
++ fds[i].revents = 0;
++ }
++
++ ret = poll(fds, nfds, 10);
++ if (ret < 0)
++ break;
++
++ if (fds[1].revents & POLLIN) {
++ ret = read(uds[1], buf, sizeof(buf));
++ ASSERT_RETURN(ret == sizeof(buf));
++
++ add_stats(send_ns);
++
++ send_ns = now(CLOCK_THREAD_CPUTIME_ID);
++ ret = write(uds[0], buf, sizeof(buf));
++ ASSERT_RETURN(ret == sizeof(buf));
++ }
++
++ now_ns = now(CLOCK_THREAD_CPUTIME_ID);
++ diff = now_ns - start;
++ if (diff > 1000000000ULL) {
++ start = now_ns;
++
++ dump_stats(true);
++ break;
++ }
++ }
++
++ } while (kdbus_util_verbose);
++
++ kdbus_printf("-- closing bus connections\n");
++
++ free(kdbus_msg);
++
++ kdbus_conn_free(conn_a);
++ kdbus_conn_free(conn_b);
++
++ return (stats.count > 1) ? TEST_OK : TEST_ERR;
++}
++
++int kdbus_test_benchmark(struct kdbus_test_env *env)
++{
++ use_memfd = true;
++ attach_none = false;
++ compare_uds = false;
++ return benchmark(env);
++}
++
++int kdbus_test_benchmark_nomemfds(struct kdbus_test_env *env)
++{
++ use_memfd = false;
++ attach_none = false;
++ compare_uds = false;
++ return benchmark(env);
++}
++
++int kdbus_test_benchmark_uds(struct kdbus_test_env *env)
++{
++ use_memfd = false;
++ attach_none = true;
++ compare_uds = true;
++ return benchmark(env);
++}
+diff --git a/tools/testing/selftests/kdbus/test-bus.c b/tools/testing/selftests/kdbus/test-bus.c
+new file mode 100644
+index 0000000..762fb30
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-bus.c
+@@ -0,0 +1,175 @@
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <limits.h>
++#include <sys/mman.h>
++#include <stdbool.h>
++
++#include "kdbus-api.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++static struct kdbus_item *kdbus_get_item(struct kdbus_info *info,
++ uint64_t type)
++{
++ struct kdbus_item *item;
++
++ KDBUS_ITEM_FOREACH(item, info, items)
++ if (item->type == type)
++ return item;
++
++ return NULL;
++}
++
++static int test_bus_creator_info(const char *bus_path)
++{
++ int ret;
++ uint64_t offset;
++ struct kdbus_conn *conn;
++ struct kdbus_info *info;
++ struct kdbus_item *item;
++ char *tmp, *busname;
++
++ /* extract the bus-name from @bus_path */
++ tmp = strdup(bus_path);
++ ASSERT_RETURN(tmp);
++ busname = strrchr(tmp, '/');
++ ASSERT_RETURN(busname);
++ *busname = 0;
++ busname = strrchr(tmp, '/');
++ ASSERT_RETURN(busname);
++ ++busname;
++
++ conn = kdbus_hello(bus_path, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ ret = kdbus_bus_creator_info(conn, _KDBUS_ATTACH_ALL, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(conn->buf + offset);
++
++ item = kdbus_get_item(info, KDBUS_ITEM_MAKE_NAME);
++ ASSERT_RETURN(item);
++ ASSERT_RETURN(!strcmp(item->str, busname));
++
++ ret = kdbus_free(conn, offset);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ free(tmp);
++ kdbus_conn_free(conn);
++ return 0;
++}
++
++int kdbus_test_bus_make(struct kdbus_test_env *env)
++{
++ struct {
++ struct kdbus_cmd cmd;
++
++ /* bloom size item */
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_bloom_parameter bloom;
++ } bs;
++
++ /* name item */
++ uint64_t n_size;
++ uint64_t n_type;
++ char name[64];
++ } bus_make;
++ char s[PATH_MAX], *name;
++ int ret, control_fd2;
++ uid_t uid;
++
++ name = unique_name("");
++ ASSERT_RETURN(name);
++
++ snprintf(s, sizeof(s), "%s/control", env->root);
++ env->control_fd = open(s, O_RDWR|O_CLOEXEC);
++ ASSERT_RETURN(env->control_fd >= 0);
++
++ control_fd2 = open(s, O_RDWR|O_CLOEXEC);
++ ASSERT_RETURN(control_fd2 >= 0);
++
++ memset(&bus_make, 0, sizeof(bus_make));
++
++ bus_make.bs.size = sizeof(bus_make.bs);
++ bus_make.bs.type = KDBUS_ITEM_BLOOM_PARAMETER;
++ bus_make.bs.bloom.size = 64;
++ bus_make.bs.bloom.n_hash = 1;
++
++ bus_make.n_type = KDBUS_ITEM_MAKE_NAME;
++
++ uid = getuid();
++
++ /* missing uid prefix */
++ snprintf(bus_make.name, sizeof(bus_make.name), "foo");
++ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
++ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
++ sizeof(bus_make.bs) + bus_make.n_size;
++ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* non alphanumeric character */
++ snprintf(bus_make.name, sizeof(bus_make.name), "%u-blah@123", uid);
++ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
++ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
++ sizeof(bus_make.bs) + bus_make.n_size;
++ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* '-' at the end */
++ snprintf(bus_make.name, sizeof(bus_make.name), "%u-blah-", uid);
++ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
++ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
++ sizeof(bus_make.bs) + bus_make.n_size;
++ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* create a new bus */
++ snprintf(bus_make.name, sizeof(bus_make.name), "%u-%s-1", uid, name);
++ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
++ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
++ sizeof(bus_make.bs) + bus_make.n_size;
++ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_cmd_bus_make(control_fd2, &bus_make.cmd);
++ ASSERT_RETURN(ret == -EEXIST);
++
++ snprintf(s, sizeof(s), "%s/%u-%s-1/bus", env->root, uid, name);
++ ASSERT_RETURN(access(s, F_OK) == 0);
++
++ ret = test_bus_creator_info(s);
++ ASSERT_RETURN(ret == 0);
++
++ /* can't use the same fd for bus make twice, even though a different
++ * bus name is used
++ */
++ snprintf(bus_make.name, sizeof(bus_make.name), "%u-%s-2", uid, name);
++ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
++ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
++ sizeof(bus_make.bs) + bus_make.n_size;
++ ret = kdbus_cmd_bus_make(env->control_fd, &bus_make.cmd);
++ ASSERT_RETURN(ret == -EBADFD);
++
++ /* create a new bus, with different fd and different bus name */
++ snprintf(bus_make.name, sizeof(bus_make.name), "%u-%s-2", uid, name);
++ bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
++ bus_make.cmd.size = sizeof(struct kdbus_cmd) +
++ sizeof(bus_make.bs) + bus_make.n_size;
++ ret = kdbus_cmd_bus_make(control_fd2, &bus_make.cmd);
++ ASSERT_RETURN(ret == 0);
++
++ close(control_fd2);
++ free(name);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-chat.c b/tools/testing/selftests/kdbus/test-chat.c
+new file mode 100644
+index 0000000..71a92d8
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-chat.c
+@@ -0,0 +1,122 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <poll.h>
++#include <stdbool.h>
++
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++int kdbus_test_chat(struct kdbus_test_env *env)
++{
++ int ret, cookie;
++ struct kdbus_conn *conn_a, *conn_b;
++ struct pollfd fds[2];
++ uint64_t flags;
++ int count;
++
++ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_a && conn_b);
++
++ flags = KDBUS_NAME_ALLOW_REPLACEMENT;
++ ret = kdbus_name_acquire(conn_a, "foo.bar.test", &flags);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_acquire(conn_a, "foo.bar.baz", NULL);
++ ASSERT_RETURN(ret == 0);
++
++ flags = KDBUS_NAME_QUEUE;
++ ret = kdbus_name_acquire(conn_b, "foo.bar.baz", &flags);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_acquire(conn_a, "foo.bar.double", NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_acquire(conn_a, "foo.bar.double", NULL);
++ ASSERT_RETURN(ret == -EALREADY);
++
++ ret = kdbus_name_release(conn_a, "foo.bar.double");
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_release(conn_a, "foo.bar.double");
++ ASSERT_RETURN(ret == -ESRCH);
++
++ ret = kdbus_list(conn_b, KDBUS_LIST_UNIQUE |
++ KDBUS_LIST_NAMES |
++ KDBUS_LIST_QUEUED |
++ KDBUS_LIST_ACTIVATORS);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_add_match_empty(conn_a);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_add_match_empty(conn_b);
++ ASSERT_RETURN(ret == 0);
++
++ cookie = 0;
++ ret = kdbus_msg_send(conn_b, NULL, 0xc0000000 | cookie, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ fds[0].fd = conn_a->fd;
++ fds[1].fd = conn_b->fd;
++
++ kdbus_printf("-- entering poll loop ...\n");
++
++ for (count = 0;; count++) {
++ int i, nfds = sizeof(fds) / sizeof(fds[0]);
++
++ for (i = 0; i < nfds; i++) {
++ fds[i].events = POLLIN | POLLPRI | POLLHUP;
++ fds[i].revents = 0;
++ }
++
++ ret = poll(fds, nfds, 3000);
++ ASSERT_RETURN(ret >= 0);
++
++ if (fds[0].revents & POLLIN) {
++ if (count > 2)
++ kdbus_name_release(conn_a, "foo.bar.baz");
++
++ ret = kdbus_msg_recv(conn_a, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++ ret = kdbus_msg_send(conn_a, NULL,
++ 0xc0000000 | cookie++,
++ 0, 0, 0, conn_b->id);
++ ASSERT_RETURN(ret == 0);
++ }
++
++ if (fds[1].revents & POLLIN) {
++ ret = kdbus_msg_recv(conn_b, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++ ret = kdbus_msg_send(conn_b, NULL,
++ 0xc0000000 | cookie++,
++ 0, 0, 0, conn_a->id);
++ ASSERT_RETURN(ret == 0);
++ }
++
++ ret = kdbus_list(conn_b, KDBUS_LIST_UNIQUE |
++ KDBUS_LIST_NAMES |
++ KDBUS_LIST_QUEUED |
++ KDBUS_LIST_ACTIVATORS);
++ ASSERT_RETURN(ret == 0);
++
++ if (count > 10)
++ break;
++ }
++
++ kdbus_printf("-- closing bus connections\n");
++ kdbus_conn_free(conn_a);
++ kdbus_conn_free(conn_b);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-connection.c b/tools/testing/selftests/kdbus/test-connection.c
+new file mode 100644
+index 0000000..5c2bf35
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-connection.c
+@@ -0,0 +1,616 @@
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <limits.h>
++#include <sys/types.h>
++#include <sys/capability.h>
++#include <sys/mman.h>
++#include <sys/syscall.h>
++#include <sys/wait.h>
++#include <stdbool.h>
++
++#include "kdbus-api.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++int kdbus_test_hello(struct kdbus_test_env *env)
++{
++ struct kdbus_cmd_free cmd_free = {};
++ struct kdbus_cmd_hello hello;
++ int fd, ret;
++
++ memset(&hello, 0, sizeof(hello));
++
++ fd = open(env->buspath, O_RDWR|O_CLOEXEC);
++ ASSERT_RETURN(fd >= 0);
++
++ hello.flags = KDBUS_HELLO_ACCEPT_FD;
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++ hello.attach_flags_recv = _KDBUS_ATTACH_ALL;
++ hello.size = sizeof(struct kdbus_cmd_hello);
++ hello.pool_size = POOL_SIZE;
++
++ /* an unaligned hello must result in -EFAULT */
++ ret = kdbus_cmd_hello(fd, (struct kdbus_cmd_hello *) ((char *) &hello + 1));
++ ASSERT_RETURN(ret == -EFAULT);
++
++ /* a size of 0 must return EMSGSIZE */
++ hello.size = 1;
++ hello.flags = KDBUS_HELLO_ACCEPT_FD;
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++ ret = kdbus_cmd_hello(fd, &hello);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ hello.size = sizeof(struct kdbus_cmd_hello);
++
++ /* check faulty flags */
++ hello.flags = 1ULL << 32;
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++ ret = kdbus_cmd_hello(fd, &hello);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* check for faulty pool sizes */
++ hello.pool_size = 0;
++ hello.flags = KDBUS_HELLO_ACCEPT_FD;
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++ ret = kdbus_cmd_hello(fd, &hello);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ hello.pool_size = 4097;
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++ ret = kdbus_cmd_hello(fd, &hello);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ hello.pool_size = POOL_SIZE;
++
++ /*
++ * The connection created by the core requires ALL meta flags
++ * to be sent. An attempt to send less than that should result in
++ * -ECONNREFUSED.
++ */
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL & ~KDBUS_ATTACH_TIMESTAMP;
++ ret = kdbus_cmd_hello(fd, &hello);
++ ASSERT_RETURN(ret == -ECONNREFUSED);
++
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++ hello.offset = (__u64)-1;
++
++ /* success test */
++ ret = kdbus_cmd_hello(fd, &hello);
++ ASSERT_RETURN(ret == 0);
++
++ /* The kernel should have returned some items */
++ ASSERT_RETURN(hello.offset != (__u64)-1);
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.offset = hello.offset;
++ ret = kdbus_cmd_free(fd, &cmd_free);
++ ASSERT_RETURN(ret >= 0);
++
++ close(fd);
++
++ fd = open(env->buspath, O_RDWR|O_CLOEXEC);
++ ASSERT_RETURN(fd >= 0);
++
++ /* no ACTIVATOR flag without a name */
++ hello.flags = KDBUS_HELLO_ACTIVATOR;
++ ret = kdbus_cmd_hello(fd, &hello);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ close(fd);
++
++ return TEST_OK;
++}
++
++int kdbus_test_byebye(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn;
++ struct kdbus_cmd_recv cmd_recv = { .size = sizeof(cmd_recv) };
++ struct kdbus_cmd cmd_byebye = { .size = sizeof(cmd_byebye) };
++ int ret;
++
++ /* create a 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ ret = kdbus_add_match_empty(conn);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_add_match_empty(env->conn);
++ ASSERT_RETURN(ret == 0);
++
++ /* send over 1st connection */
++ ret = kdbus_msg_send(env->conn, NULL, 0, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ /* say byebye on the 2nd, which must fail */
++ ret = kdbus_cmd_byebye(conn->fd, &cmd_byebye);
++ ASSERT_RETURN(ret == -EBUSY);
++
++ /* receive the message */
++ ret = kdbus_cmd_recv(conn->fd, &cmd_recv);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_free(conn, cmd_recv.msg.offset);
++ ASSERT_RETURN(ret == 0);
++
++ /* and try again */
++ ret = kdbus_cmd_byebye(conn->fd, &cmd_byebye);
++ ASSERT_RETURN(ret == 0);
++
++ /* a 2nd try should result in -ECONNRESET */
++ ret = kdbus_cmd_byebye(conn->fd, &cmd_byebye);
++ ASSERT_RETURN(ret == -ECONNRESET);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
++
++/* Get only the first item */
++static struct kdbus_item *kdbus_get_item(struct kdbus_info *info,
++ uint64_t type)
++{
++ struct kdbus_item *item;
++
++ KDBUS_ITEM_FOREACH(item, info, items)
++ if (item->type == type)
++ return item;
++
++ return NULL;
++}
++
++static unsigned int kdbus_count_item(struct kdbus_info *info,
++ uint64_t type)
++{
++ unsigned int i = 0;
++ const struct kdbus_item *item;
++
++ KDBUS_ITEM_FOREACH(item, info, items)
++ if (item->type == type)
++ i++;
++
++ return i;
++}
++
++static int kdbus_fuzz_conn_info(struct kdbus_test_env *env, int capable)
++{
++ int ret;
++ unsigned int cnt = 0;
++ uint64_t offset = 0;
++ uint64_t kdbus_flags_mask;
++ struct kdbus_info *info;
++ struct kdbus_conn *conn;
++ struct kdbus_conn *privileged;
++ const struct kdbus_item *item;
++ uint64_t valid_flags_set;
++ uint64_t invalid_flags_set;
++ uint64_t valid_flags = KDBUS_ATTACH_NAMES |
++ KDBUS_ATTACH_CREDS |
++ KDBUS_ATTACH_PIDS |
++ KDBUS_ATTACH_CONN_DESCRIPTION;
++
++ uint64_t invalid_flags = KDBUS_ATTACH_NAMES |
++ KDBUS_ATTACH_CREDS |
++ KDBUS_ATTACH_PIDS |
++ KDBUS_ATTACH_CAPS |
++ KDBUS_ATTACH_CGROUP |
++ KDBUS_ATTACH_CONN_DESCRIPTION;
++
++ struct kdbus_creds cached_creds;
++ uid_t ruid, euid, suid;
++ gid_t rgid, egid, sgid;
++
++ getresuid(&ruid, &euid, &suid);
++ getresgid(&rgid, &egid, &sgid);
++
++ cached_creds.uid = ruid;
++ cached_creds.euid = euid;
++ cached_creds.suid = suid;
++ cached_creds.fsuid = ruid;
++
++ cached_creds.gid = rgid;
++ cached_creds.egid = egid;
++ cached_creds.sgid = sgid;
++ cached_creds.fsgid = rgid;
++
++ struct kdbus_pids cached_pids = {
++ .pid = getpid(),
++ .tid = syscall(SYS_gettid),
++ .ppid = getppid(),
++ };
++
++ ret = kdbus_sysfs_get_parameter_mask(env->mask_param_path,
++ &kdbus_flags_mask);
++ ASSERT_RETURN(ret == 0);
++
++ valid_flags_set = valid_flags & kdbus_flags_mask;
++ invalid_flags_set = invalid_flags & kdbus_flags_mask;
++
++ ret = kdbus_conn_info(env->conn, env->conn->id, NULL,
++ valid_flags, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(env->conn->buf + offset);
++ ASSERT_RETURN(info->id == env->conn->id);
++
++ /* We do not have any well-known name */
++ item = kdbus_get_item(info, KDBUS_ITEM_NAME);
++ ASSERT_RETURN(item == NULL);
++
++ item = kdbus_get_item(info, KDBUS_ITEM_CONN_DESCRIPTION);
++ if (valid_flags_set & KDBUS_ATTACH_CONN_DESCRIPTION) {
++ ASSERT_RETURN(item);
++ } else {
++ ASSERT_RETURN(item == NULL);
++ }
++
++ kdbus_free(env->conn, offset);
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ privileged = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(privileged);
++
++ ret = kdbus_conn_info(conn, conn->id, NULL, valid_flags, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(conn->buf + offset);
++ ASSERT_RETURN(info->id == conn->id);
++
++ /* We do not have any well-known name */
++ item = kdbus_get_item(info, KDBUS_ITEM_NAME);
++ ASSERT_RETURN(item == NULL);
++
++ cnt = kdbus_count_item(info, KDBUS_ITEM_CREDS);
++ if (valid_flags_set & KDBUS_ATTACH_CREDS) {
++ ASSERT_RETURN(cnt == 1);
++
++ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
++ ASSERT_RETURN(item);
++
++ /* Compare received items with cached creds */
++ ASSERT_RETURN(memcmp(&item->creds, &cached_creds,
++ sizeof(struct kdbus_creds)) == 0);
++ } else {
++ ASSERT_RETURN(cnt == 0);
++ }
++
++ item = kdbus_get_item(info, KDBUS_ITEM_PIDS);
++ if (valid_flags_set & KDBUS_ATTACH_PIDS) {
++ ASSERT_RETURN(item);
++
++ /* Compare item->pids with cached PIDs */
++ ASSERT_RETURN(item->pids.pid == cached_pids.pid &&
++ item->pids.tid == cached_pids.tid &&
++ item->pids.ppid == cached_pids.ppid);
++ } else {
++ ASSERT_RETURN(item == NULL);
++ }
++
++ /* We did not request KDBUS_ITEM_CAPS */
++ item = kdbus_get_item(info, KDBUS_ITEM_CAPS);
++ ASSERT_RETURN(item == NULL);
++
++ kdbus_free(conn, offset);
++
++ ret = kdbus_name_acquire(conn, "com.example.a", NULL);
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_conn_info(conn, conn->id, NULL, valid_flags, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(conn->buf + offset);
++ ASSERT_RETURN(info->id == conn->id);
++
++ item = kdbus_get_item(info, KDBUS_ITEM_OWNED_NAME);
++ if (valid_flags_set & KDBUS_ATTACH_NAMES) {
++ ASSERT_RETURN(item && !strcmp(item->name.name, "com.example.a"));
++ } else {
++ ASSERT_RETURN(item == NULL);
++ }
++
++ kdbus_free(conn, offset);
++
++ ret = kdbus_conn_info(conn, 0, "com.example.a", valid_flags, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(conn->buf + offset);
++ ASSERT_RETURN(info->id == conn->id);
++
++ kdbus_free(conn, offset);
++
++ /* does not have the necessary caps to drop to unprivileged */
++ if (!capable)
++ goto continue_test;
++
++ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({
++ ret = kdbus_conn_info(conn, conn->id, NULL,
++ valid_flags, &offset);
++ ASSERT_EXIT(ret == 0);
++
++ info = (struct kdbus_info *)(conn->buf + offset);
++ ASSERT_EXIT(info->id == conn->id);
++
++ if (valid_flags_set & KDBUS_ATTACH_NAMES) {
++ item = kdbus_get_item(info, KDBUS_ITEM_OWNED_NAME);
++ ASSERT_EXIT(item &&
++ strcmp(item->name.name,
++ "com.example.a") == 0);
++ }
++
++ if (valid_flags_set & KDBUS_ATTACH_CREDS) {
++ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
++ ASSERT_EXIT(item);
++
++ /* Compare received items with cached creds */
++ ASSERT_EXIT(memcmp(&item->creds, &cached_creds,
++ sizeof(struct kdbus_creds)) == 0);
++ }
++
++ if (valid_flags_set & KDBUS_ATTACH_PIDS) {
++ item = kdbus_get_item(info, KDBUS_ITEM_PIDS);
++ ASSERT_EXIT(item);
++
++ /*
++ * Compare item->pids with cached pids of
++ * privileged one.
++ *
++ * cmd_info will always return cached pids.
++ */
++ ASSERT_EXIT(item->pids.pid == cached_pids.pid &&
++ item->pids.tid == cached_pids.tid);
++ }
++
++ kdbus_free(conn, offset);
++
++ /*
++ * Use invalid_flags and make sure that userspace
++ * do not play with us.
++ */
++ ret = kdbus_conn_info(conn, conn->id, NULL,
++ invalid_flags, &offset);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * Make sure that we return only one creds item and
++ * it points to the cached creds.
++ */
++ cnt = kdbus_count_item(info, KDBUS_ITEM_CREDS);
++ if (invalid_flags_set & KDBUS_ATTACH_CREDS) {
++ ASSERT_EXIT(cnt == 1);
++
++ item = kdbus_get_item(info, KDBUS_ITEM_CREDS);
++ ASSERT_EXIT(item);
++
++ /* Compare received items with cached creds */
++ ASSERT_EXIT(memcmp(&item->creds, &cached_creds,
++ sizeof(struct kdbus_creds)) == 0);
++ } else {
++ ASSERT_EXIT(cnt == 0);
++ }
++
++ if (invalid_flags_set & KDBUS_ATTACH_PIDS) {
++ cnt = kdbus_count_item(info, KDBUS_ITEM_PIDS);
++ ASSERT_EXIT(cnt == 1);
++
++ item = kdbus_get_item(info, KDBUS_ITEM_PIDS);
++ ASSERT_EXIT(item);
++
++ /* Compare item->pids with cached pids */
++ ASSERT_EXIT(item->pids.pid == cached_pids.pid &&
++ item->pids.tid == cached_pids.tid);
++ }
++
++ cnt = kdbus_count_item(info, KDBUS_ITEM_CGROUP);
++ if (invalid_flags_set & KDBUS_ATTACH_CGROUP) {
++ ASSERT_EXIT(cnt == 1);
++ } else {
++ ASSERT_EXIT(cnt == 0);
++ }
++
++ cnt = kdbus_count_item(info, KDBUS_ITEM_CAPS);
++ if (invalid_flags_set & KDBUS_ATTACH_CAPS) {
++ ASSERT_EXIT(cnt == 1);
++ } else {
++ ASSERT_EXIT(cnt == 0);
++ }
++
++ kdbus_free(conn, offset);
++ }),
++ ({ 0; }));
++ ASSERT_RETURN(ret == 0);
++
++continue_test:
++
++ /* A second name */
++ ret = kdbus_name_acquire(conn, "com.example.b", NULL);
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_conn_info(conn, conn->id, NULL, valid_flags, &offset);
++ ASSERT_RETURN(ret == 0);
++
++ info = (struct kdbus_info *)(conn->buf + offset);
++ ASSERT_RETURN(info->id == conn->id);
++
++ cnt = kdbus_count_item(info, KDBUS_ITEM_OWNED_NAME);
++ if (valid_flags_set & KDBUS_ATTACH_NAMES) {
++ ASSERT_RETURN(cnt == 2);
++ } else {
++ ASSERT_RETURN(cnt == 0);
++ }
++
++ kdbus_free(conn, offset);
++
++ ASSERT_RETURN(ret == 0);
++
++ return 0;
++}
++
++int kdbus_test_conn_info(struct kdbus_test_env *env)
++{
++ int ret;
++ int have_caps;
++ struct {
++ struct kdbus_cmd_info cmd_info;
++
++ struct {
++ uint64_t size;
++ uint64_t type;
++ char str[64];
++ } name;
++ } buf;
++
++ buf.cmd_info.size = sizeof(struct kdbus_cmd_info);
++ buf.cmd_info.flags = 0;
++ buf.cmd_info.attach_flags = 0;
++ buf.cmd_info.id = env->conn->id;
++
++ ret = kdbus_conn_info(env->conn, env->conn->id, NULL, 0, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* try to pass a name that is longer than the buffer's size */
++ buf.name.size = KDBUS_ITEM_HEADER_SIZE + 1;
++ buf.name.type = KDBUS_ITEM_NAME;
++ strcpy(buf.name.str, "foo.bar.bla");
++
++ buf.cmd_info.id = 0;
++ buf.cmd_info.size = sizeof(buf.cmd_info) + buf.name.size;
++ ret = kdbus_cmd_conn_info(env->conn->fd, (struct kdbus_cmd_info *) &buf);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* Pass a non existent name */
++ ret = kdbus_conn_info(env->conn, 0, "non.existent.name", 0, NULL);
++ ASSERT_RETURN(ret == -ESRCH);
++
++ if (!all_uids_gids_are_mapped())
++ return TEST_SKIP;
++
++ /* Test for caps here, so we run the previous test */
++ have_caps = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
++ ASSERT_RETURN(have_caps >= 0);
++
++ ret = kdbus_fuzz_conn_info(env, have_caps);
++ ASSERT_RETURN(ret == 0);
++
++ /* Now if we have skipped some tests then let the user know */
++ if (!have_caps)
++ return TEST_SKIP;
++
++ return TEST_OK;
++}
++
++int kdbus_test_conn_update(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn;
++ struct kdbus_msg *msg;
++ int found = 0;
++ int ret;
++
++ /*
++ * kdbus_hello() sets all attach flags. Receive a message by this
++ * connection, and make sure a timestamp item (just to pick one) is
++ * present.
++ */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ ret = kdbus_msg_send(env->conn, NULL, 0x12345678, 0, 0, 0, conn->id);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ found = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
++ ASSERT_RETURN(found == 1);
++
++ kdbus_msg_free(msg);
++
++ /*
++ * Now, modify the attach flags and repeat the action. The item must
++ * now be missing.
++ */
++ found = 0;
++
++ ret = kdbus_conn_update_attach_flags(conn,
++ _KDBUS_ATTACH_ALL,
++ _KDBUS_ATTACH_ALL &
++ ~KDBUS_ATTACH_TIMESTAMP);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_send(env->conn, NULL, 0x12345678, 0, 0, 0, conn->id);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ found = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
++ ASSERT_RETURN(found == 0);
++
++ /* Provide a bogus attach_flags value */
++ ret = kdbus_conn_update_attach_flags(conn,
++ _KDBUS_ATTACH_ALL + 1,
++ _KDBUS_ATTACH_ALL);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ kdbus_msg_free(msg);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
++
++int kdbus_test_writable_pool(struct kdbus_test_env *env)
++{
++ struct kdbus_cmd_free cmd_free = {};
++ struct kdbus_cmd_hello hello;
++ int fd, ret;
++ void *map;
++
++ fd = open(env->buspath, O_RDWR | O_CLOEXEC);
++ ASSERT_RETURN(fd >= 0);
++
++ memset(&hello, 0, sizeof(hello));
++ hello.flags = KDBUS_HELLO_ACCEPT_FD;
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++ hello.attach_flags_recv = _KDBUS_ATTACH_ALL;
++ hello.size = sizeof(struct kdbus_cmd_hello);
++ hello.pool_size = POOL_SIZE;
++ hello.offset = (__u64)-1;
++
++ /* success test */
++ ret = kdbus_cmd_hello(fd, &hello);
++ ASSERT_RETURN(ret == 0);
++
++ /* The kernel should have returned some items */
++ ASSERT_RETURN(hello.offset != (__u64)-1);
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.offset = hello.offset;
++ ret = kdbus_cmd_free(fd, &cmd_free);
++ ASSERT_RETURN(ret >= 0);
++
++ /* pools cannot be mapped writable */
++ map = mmap(NULL, POOL_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
++ ASSERT_RETURN(map == MAP_FAILED);
++
++ /* pools can always be mapped readable */
++ map = mmap(NULL, POOL_SIZE, PROT_READ, MAP_SHARED, fd, 0);
++ ASSERT_RETURN(map != MAP_FAILED);
++
++ /* make sure we cannot change protection masks to writable */
++ ret = mprotect(map, POOL_SIZE, PROT_READ | PROT_WRITE);
++ ASSERT_RETURN(ret < 0);
++
++ munmap(map, POOL_SIZE);
++ close(fd);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-daemon.c b/tools/testing/selftests/kdbus/test-daemon.c
+new file mode 100644
+index 0000000..8bc2386
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-daemon.c
+@@ -0,0 +1,65 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <poll.h>
++#include <stdbool.h>
++
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++int kdbus_test_daemon(struct kdbus_test_env *env)
++{
++ struct pollfd fds[2];
++ int count;
++ int ret;
++
++ /* This test doesn't make any sense in non-interactive mode */
++ if (!kdbus_util_verbose)
++ return TEST_OK;
++
++ printf("Created connection %llu on bus '%s'\n",
++ (unsigned long long) env->conn->id, env->buspath);
++
++ ret = kdbus_name_acquire(env->conn, "com.example.kdbus-test", NULL);
++ ASSERT_RETURN(ret == 0);
++ printf(" Aquired name: com.example.kdbus-test\n");
++
++ fds[0].fd = env->conn->fd;
++ fds[1].fd = STDIN_FILENO;
++
++ printf("Monitoring connections:\n");
++
++ for (count = 0;; count++) {
++ int i, nfds = sizeof(fds) / sizeof(fds[0]);
++
++ for (i = 0; i < nfds; i++) {
++ fds[i].events = POLLIN | POLLPRI | POLLHUP;
++ fds[i].revents = 0;
++ }
++
++ ret = poll(fds, nfds, -1);
++ if (ret <= 0)
++ break;
++
++ if (fds[0].revents & POLLIN) {
++ ret = kdbus_msg_recv(env->conn, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++ }
++
++ /* stdin */
++ if (fds[1].revents & POLLIN)
++ break;
++ }
++
++ printf("Closing bus connection\n");
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-endpoint.c b/tools/testing/selftests/kdbus/test-endpoint.c
+new file mode 100644
+index 0000000..dcc6ab9
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-endpoint.c
+@@ -0,0 +1,341 @@
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <libgen.h>
++#include <sys/capability.h>
++#include <sys/wait.h>
++#include <stdbool.h>
++
++#include "kdbus-api.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++#define KDBUS_SYSNAME_MAX_LEN 63
++
++static int install_name_add_match(struct kdbus_conn *conn, const char *name)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_notify_name_change chg;
++ } item;
++ char name[64];
++ } buf;
++ int ret;
++
++ /* install the match rule */
++ memset(&buf, 0, sizeof(buf));
++ buf.item.type = KDBUS_ITEM_NAME_ADD;
++ buf.item.chg.old_id.id = KDBUS_MATCH_ID_ANY;
++ buf.item.chg.new_id.id = KDBUS_MATCH_ID_ANY;
++ strncpy(buf.name, name, sizeof(buf.name) - 1);
++ buf.item.size = sizeof(buf.item) + strlen(buf.name) + 1;
++ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
++
++ ret = kdbus_cmd_match_add(conn->fd, &buf.cmd);
++ if (ret < 0)
++ return ret;
++
++ return 0;
++}
++
++static int create_endpoint(const char *buspath, uid_t uid, const char *name,
++ uint64_t flags)
++{
++ struct {
++ struct kdbus_cmd cmd;
++
++ /* name item */
++ struct {
++ uint64_t size;
++ uint64_t type;
++ /* max should be KDBUS_SYSNAME_MAX_LEN */
++ char str[128];
++ } name;
++ } ep_make;
++ int fd, ret;
++
++ fd = open(buspath, O_RDWR);
++ if (fd < 0)
++ return fd;
++
++ memset(&ep_make, 0, sizeof(ep_make));
++
++ snprintf(ep_make.name.str,
++ /* Use the KDBUS_SYSNAME_MAX_LEN or sizeof(str) */
++ KDBUS_SYSNAME_MAX_LEN > strlen(name) ?
++ KDBUS_SYSNAME_MAX_LEN : sizeof(ep_make.name.str),
++ "%u-%s", uid, name);
++
++ ep_make.name.type = KDBUS_ITEM_MAKE_NAME;
++ ep_make.name.size = KDBUS_ITEM_HEADER_SIZE +
++ strlen(ep_make.name.str) + 1;
++
++ ep_make.cmd.flags = flags;
++ ep_make.cmd.size = sizeof(ep_make.cmd) + ep_make.name.size;
++
++ ret = kdbus_cmd_endpoint_make(fd, &ep_make.cmd);
++ if (ret < 0) {
++ kdbus_printf("error creating endpoint: %d (%m)\n", ret);
++ return ret;
++ }
++
++ return fd;
++}
++
++static int unpriv_test_custom_ep(const char *buspath)
++{
++ int ret, ep_fd1, ep_fd2;
++ char *ep1, *ep2, *tmp1, *tmp2;
++
++ tmp1 = strdup(buspath);
++ tmp2 = strdup(buspath);
++ ASSERT_RETURN(tmp1 && tmp2);
++
++ ret = asprintf(&ep1, "%s/%u-%s", dirname(tmp1), getuid(), "apps1");
++ ASSERT_RETURN(ret >= 0);
++
++ ret = asprintf(&ep2, "%s/%u-%s", dirname(tmp2), getuid(), "apps2");
++ ASSERT_RETURN(ret >= 0);
++
++ free(tmp1);
++ free(tmp2);
++
++ /* endpoint only accessible to current uid */
++ ep_fd1 = create_endpoint(buspath, getuid(), "apps1", 0);
++ ASSERT_RETURN(ep_fd1 >= 0);
++
++ /* endpoint world accessible */
++ ep_fd2 = create_endpoint(buspath, getuid(), "apps2",
++ KDBUS_MAKE_ACCESS_WORLD);
++ ASSERT_RETURN(ep_fd2 >= 0);
++
++ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_UID, ({
++ int ep_fd;
++ struct kdbus_conn *ep_conn;
++
++ /*
++ * Make sure that we are not able to create custom
++ * endpoints
++ */
++ ep_fd = create_endpoint(buspath, getuid(),
++ "unpriv_costum_ep", 0);
++ ASSERT_EXIT(ep_fd == -EPERM);
++
++ /*
++ * Endpoint "apps1" only accessible to same users,
++ * that own the endpoint. Access denied by VFS
++ */
++ ep_conn = kdbus_hello(ep1, 0, NULL, 0);
++ ASSERT_EXIT(!ep_conn && errno == EACCES);
++
++ /* Endpoint "apps2" world accessible */
++ ep_conn = kdbus_hello(ep2, 0, NULL, 0);
++ ASSERT_EXIT(ep_conn);
++
++ kdbus_conn_free(ep_conn);
++
++ _exit(EXIT_SUCCESS);
++ }),
++ ({ 0; }));
++ ASSERT_RETURN(ret == 0);
++
++ close(ep_fd1);
++ close(ep_fd2);
++ free(ep1);
++ free(ep2);
++
++ return 0;
++}
++
++static int update_endpoint(int fd, const char *name)
++{
++ int len = strlen(name) + 1;
++ struct {
++ struct kdbus_cmd cmd;
++
++ /* name item */
++ struct {
++ uint64_t size;
++ uint64_t type;
++ char str[KDBUS_ALIGN8(len)];
++ } name;
++
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_policy_access access;
++ } access;
++ } ep_update;
++ int ret;
++
++ memset(&ep_update, 0, sizeof(ep_update));
++
++ ep_update.name.size = KDBUS_ITEM_HEADER_SIZE + len;
++ ep_update.name.type = KDBUS_ITEM_NAME;
++ strncpy(ep_update.name.str, name, sizeof(ep_update.name.str) - 1);
++
++ ep_update.access.size = sizeof(ep_update.access);
++ ep_update.access.type = KDBUS_ITEM_POLICY_ACCESS;
++ ep_update.access.access.type = KDBUS_POLICY_ACCESS_WORLD;
++ ep_update.access.access.access = KDBUS_POLICY_SEE;
++
++ ep_update.cmd.size = sizeof(ep_update);
++
++ ret = kdbus_cmd_endpoint_update(fd, &ep_update.cmd);
++ if (ret < 0) {
++ kdbus_printf("error updating endpoint: %d (%m)\n", ret);
++ return ret;
++ }
++
++ return 0;
++}
++
++int kdbus_test_custom_endpoint(struct kdbus_test_env *env)
++{
++ char *ep, *tmp;
++ int ret, ep_fd;
++ struct kdbus_msg *msg;
++ struct kdbus_conn *ep_conn;
++ struct kdbus_conn *reader;
++ const char *name = "foo.bar.baz";
++ const char *epname = "foo";
++ char fake_ep[KDBUS_SYSNAME_MAX_LEN + 1] = {'\0'};
++
++ memset(fake_ep, 'X', sizeof(fake_ep) - 1);
++
++ /* Try to create a custom endpoint with a long name */
++ ret = create_endpoint(env->buspath, getuid(), fake_ep, 0);
++ ASSERT_RETURN(ret == -ENAMETOOLONG);
++
++ /* Try to create a custom endpoint with a different uid */
++ ret = create_endpoint(env->buspath, getuid() + 1, "foobar", 0);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* create a custom endpoint, and open a connection on it */
++ ep_fd = create_endpoint(env->buspath, getuid(), "foo", 0);
++ ASSERT_RETURN(ep_fd >= 0);
++
++ tmp = strdup(env->buspath);
++ ASSERT_RETURN(tmp);
++
++ ret = asprintf(&ep, "%s/%u-%s", dirname(tmp), getuid(), epname);
++ free(tmp);
++ ASSERT_RETURN(ret >= 0);
++
++ /* Register a connection that listen to broadcasts */
++ reader = kdbus_hello(ep, 0, NULL, 0);
++ ASSERT_RETURN(reader);
++
++ /* Register to kernel signals */
++ ret = kdbus_add_match_id(reader, 0x1, KDBUS_ITEM_ID_ADD,
++ KDBUS_MATCH_ID_ANY);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_add_match_id(reader, 0x2, KDBUS_ITEM_ID_REMOVE,
++ KDBUS_MATCH_ID_ANY);
++ ASSERT_RETURN(ret == 0);
++
++ ret = install_name_add_match(reader, name);
++ ASSERT_RETURN(ret == 0);
++
++ /* Monitor connections are not supported on custom endpoints */
++ ep_conn = kdbus_hello(ep, KDBUS_HELLO_MONITOR, NULL, 0);
++ ASSERT_RETURN(!ep_conn && errno == EOPNOTSUPP);
++
++ ep_conn = kdbus_hello(ep, 0, NULL, 0);
++ ASSERT_RETURN(ep_conn);
++
++ /*
++ * Add a name add match on the endpoint connection, acquire name from
++ * the unfiltered connection, and make sure the filtered connection
++ * did not get the notification on the name owner change. Also, the
++ * endpoint connection may not be able to call conn_info, neither on
++ * the name nor on the ID.
++ */
++ ret = install_name_add_match(ep_conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_acquire(env->conn, name, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(ep_conn, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ ret = kdbus_conn_info(ep_conn, 0, name, 0, NULL);
++ ASSERT_RETURN(ret == -ESRCH);
++
++ ret = kdbus_conn_info(ep_conn, 0, "random.crappy.name", 0, NULL);
++ ASSERT_RETURN(ret == -ESRCH);
++
++ ret = kdbus_conn_info(ep_conn, env->conn->id, NULL, 0, NULL);
++ ASSERT_RETURN(ret == -ENXIO);
++
++ ret = kdbus_conn_info(ep_conn, 0x0fffffffffffffffULL, NULL, 0, NULL);
++ ASSERT_RETURN(ret == -ENXIO);
++
++ /* Check that the reader did not receive anything */
++ ret = kdbus_msg_recv(reader, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ /*
++ * Release the name again, update the custom endpoint policy,
++ * and try again. This time, the connection on the custom endpoint
++ * should have gotten it.
++ */
++ ret = kdbus_name_release(env->conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ ret = update_endpoint(ep_fd, name);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_acquire(env->conn, name, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(ep_conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_NAME_ADD);
++ ASSERT_RETURN(msg->items[0].name_change.old_id.id == 0);
++ ASSERT_RETURN(msg->items[0].name_change.new_id.id == env->conn->id);
++ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
++ kdbus_msg_free(msg);
++
++ ret = kdbus_msg_recv(reader, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
++
++ kdbus_msg_free(msg);
++
++ ret = kdbus_conn_info(ep_conn, 0, name, 0, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_conn_info(ep_conn, env->conn->id, NULL, 0, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* If we have privileges test custom endpoints */
++ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * All uids/gids are mapped and we have the necessary caps
++ */
++ if (ret && all_uids_gids_are_mapped()) {
++ ret = unpriv_test_custom_ep(env->buspath);
++ ASSERT_RETURN(ret == 0);
++ }
++
++ kdbus_conn_free(reader);
++ kdbus_conn_free(ep_conn);
++ close(ep_fd);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-fd.c b/tools/testing/selftests/kdbus/test-fd.c
+new file mode 100644
+index 0000000..2ae0f5a
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-fd.c
+@@ -0,0 +1,789 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stdbool.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <sys/types.h>
++#include <sys/mman.h>
++#include <sys/socket.h>
++#include <sys/wait.h>
++
++#include "kdbus-api.h"
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++#define KDBUS_MSG_MAX_ITEMS 128
++#define KDBUS_USER_MAX_CONN 256
++
++/* maximum number of inflight fds in a target queue per user */
++#define KDBUS_CONN_MAX_FDS_PER_USER 16
++
++/* maximum number of memfd items per message */
++#define KDBUS_MSG_MAX_MEMFD_ITEMS 16
++
++static int make_msg_payload_dbus(uint64_t src_id, uint64_t dst_id,
++ uint64_t msg_size,
++ struct kdbus_msg **msg_dbus)
++{
++ struct kdbus_msg *msg;
++
++ msg = malloc(msg_size);
++ ASSERT_RETURN_VAL(msg, -ENOMEM);
++
++ memset(msg, 0, msg_size);
++ msg->size = msg_size;
++ msg->src_id = src_id;
++ msg->dst_id = dst_id;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++
++ *msg_dbus = msg;
++
++ return 0;
++}
++
++static void make_item_memfds(struct kdbus_item *item,
++ int *memfds, size_t memfd_size)
++{
++ size_t i;
++
++ for (i = 0; i < memfd_size; i++) {
++ item->type = KDBUS_ITEM_PAYLOAD_MEMFD;
++ item->size = KDBUS_ITEM_HEADER_SIZE +
++ sizeof(struct kdbus_memfd);
++ item->memfd.fd = memfds[i];
++ item->memfd.size = sizeof(uint64_t); /* const size */
++ item = KDBUS_ITEM_NEXT(item);
++ }
++}
++
++static void make_item_fds(struct kdbus_item *item,
++ int *fd_array, size_t fd_size)
++{
++ size_t i;
++ item->type = KDBUS_ITEM_FDS;
++ item->size = KDBUS_ITEM_HEADER_SIZE + (sizeof(int) * fd_size);
++
++ for (i = 0; i < fd_size; i++)
++ item->fds[i] = fd_array[i];
++}
++
++static int memfd_write(const char *name, void *buf, size_t bufsize)
++{
++ ssize_t ret;
++ int memfd;
++
++ memfd = sys_memfd_create(name, 0);
++ ASSERT_RETURN_VAL(memfd >= 0, memfd);
++
++ ret = write(memfd, buf, bufsize);
++ ASSERT_RETURN_VAL(ret == (ssize_t)bufsize, -EAGAIN);
++
++ ret = sys_memfd_seal_set(memfd);
++ ASSERT_RETURN_VAL(ret == 0, -errno);
++
++ return memfd;
++}
++
++static int send_memfds(struct kdbus_conn *conn, uint64_t dst_id,
++ int *memfds_array, size_t memfd_count)
++{
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_item *item;
++ struct kdbus_msg *msg;
++ uint64_t size;
++ int ret;
++
++ size = sizeof(struct kdbus_msg);
++ size += memfd_count * KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
++
++ if (dst_id == KDBUS_DST_ID_BROADCAST)
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
++
++ ret = make_msg_payload_dbus(conn->id, dst_id, size, &msg);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ item = msg->items;
++
++ if (dst_id == KDBUS_DST_ID_BROADCAST) {
++ item->type = KDBUS_ITEM_BLOOM_FILTER;
++ item->size = KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
++ item = KDBUS_ITEM_NEXT(item);
++
++ msg->flags |= KDBUS_MSG_SIGNAL;
++ }
++
++ make_item_memfds(item, memfds_array, memfd_count);
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ ret = kdbus_cmd_send(conn->fd, &cmd);
++ if (ret < 0) {
++ kdbus_printf("error sending message: %d (%m)\n", ret);
++ return ret;
++ }
++
++ free(msg);
++ return 0;
++}
++
++static int send_fds(struct kdbus_conn *conn, uint64_t dst_id,
++ int *fd_array, size_t fd_count)
++{
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_item *item;
++ struct kdbus_msg *msg;
++ uint64_t size;
++ int ret;
++
++ size = sizeof(struct kdbus_msg);
++ size += KDBUS_ITEM_SIZE(sizeof(int) * fd_count);
++
++ if (dst_id == KDBUS_DST_ID_BROADCAST)
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
++
++ ret = make_msg_payload_dbus(conn->id, dst_id, size, &msg);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ item = msg->items;
++
++ if (dst_id == KDBUS_DST_ID_BROADCAST) {
++ item->type = KDBUS_ITEM_BLOOM_FILTER;
++ item->size = KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + 64;
++ item = KDBUS_ITEM_NEXT(item);
++
++ msg->flags |= KDBUS_MSG_SIGNAL;
++ }
++
++ make_item_fds(item, fd_array, fd_count);
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ ret = kdbus_cmd_send(conn->fd, &cmd);
++ if (ret < 0) {
++ kdbus_printf("error sending message: %d (%m)\n", ret);
++ return ret;
++ }
++
++ free(msg);
++ return ret;
++}
++
++static int send_fds_memfds(struct kdbus_conn *conn, uint64_t dst_id,
++ int *fds_array, size_t fd_count,
++ int *memfds_array, size_t memfd_count)
++{
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_item *item;
++ struct kdbus_msg *msg;
++ uint64_t size;
++ int ret;
++
++ size = sizeof(struct kdbus_msg);
++ size += memfd_count * KDBUS_ITEM_SIZE(sizeof(struct kdbus_memfd));
++ size += KDBUS_ITEM_SIZE(sizeof(int) * fd_count);
++
++ ret = make_msg_payload_dbus(conn->id, dst_id, size, &msg);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ item = msg->items;
++
++ make_item_fds(item, fds_array, fd_count);
++ item = KDBUS_ITEM_NEXT(item);
++ make_item_memfds(item, memfds_array, memfd_count);
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ ret = kdbus_cmd_send(conn->fd, &cmd);
++ if (ret < 0) {
++ kdbus_printf("error sending message: %d (%m)\n", ret);
++ return ret;
++ }
++
++ free(msg);
++ return ret;
++}
++
++/* Return the number of received fds */
++static unsigned int kdbus_item_get_nfds(struct kdbus_msg *msg)
++{
++ unsigned int fds = 0;
++ const struct kdbus_item *item;
++
++ KDBUS_ITEM_FOREACH(item, msg, items) {
++ switch (item->type) {
++ case KDBUS_ITEM_FDS: {
++ fds += (item->size - KDBUS_ITEM_HEADER_SIZE) /
++ sizeof(int);
++ break;
++ }
++
++ case KDBUS_ITEM_PAYLOAD_MEMFD:
++ fds++;
++ break;
++
++ default:
++ break;
++ }
++ }
++
++ return fds;
++}
++
++static struct kdbus_msg *
++get_kdbus_msg_with_fd(struct kdbus_conn *conn_src,
++ uint64_t dst_id, uint64_t cookie, int fd)
++{
++ int ret;
++ uint64_t size;
++ struct kdbus_item *item;
++ struct kdbus_msg *msg;
++
++ size = sizeof(struct kdbus_msg);
++ if (fd >= 0)
++ size += KDBUS_ITEM_SIZE(sizeof(int));
++
++ ret = make_msg_payload_dbus(conn_src->id, dst_id, size, &msg);
++ ASSERT_RETURN_VAL(ret == 0, NULL);
++
++ msg->cookie = cookie;
++
++ if (fd >= 0) {
++ item = msg->items;
++
++ make_item_fds(item, (int *)&fd, 1);
++ }
++
++ return msg;
++}
++
++static int kdbus_test_no_fds(struct kdbus_test_env *env,
++ int *fds, int *memfd)
++{
++ pid_t pid;
++ int ret, status;
++ uint64_t cookie;
++ int connfd1, connfd2;
++ struct kdbus_msg *msg, *msg_sync_reply;
++ struct kdbus_cmd_hello hello;
++ struct kdbus_conn *conn_src, *conn_dst, *conn_dummy;
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_cmd_free cmd_free = {};
++
++ conn_src = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_src);
++
++ connfd1 = open(env->buspath, O_RDWR|O_CLOEXEC);
++ ASSERT_RETURN(connfd1 >= 0);
++
++ connfd2 = open(env->buspath, O_RDWR|O_CLOEXEC);
++ ASSERT_RETURN(connfd2 >= 0);
++
++ /*
++ * Create connections without KDBUS_HELLO_ACCEPT_FD
++ * to test if send fd operations are blocked
++ */
++ conn_dst = malloc(sizeof(*conn_dst));
++ ASSERT_RETURN(conn_dst);
++
++ conn_dummy = malloc(sizeof(*conn_dummy));
++ ASSERT_RETURN(conn_dummy);
++
++ memset(&hello, 0, sizeof(hello));
++ hello.size = sizeof(struct kdbus_cmd_hello);
++ hello.pool_size = POOL_SIZE;
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++
++ ret = kdbus_cmd_hello(connfd1, &hello);
++ ASSERT_RETURN(ret == 0);
++
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.offset = hello.offset;
++ ret = kdbus_cmd_free(connfd1, &cmd_free);
++ ASSERT_RETURN(ret >= 0);
++
++ conn_dst->fd = connfd1;
++ conn_dst->id = hello.id;
++
++ memset(&hello, 0, sizeof(hello));
++ hello.size = sizeof(struct kdbus_cmd_hello);
++ hello.pool_size = POOL_SIZE;
++ hello.attach_flags_send = _KDBUS_ATTACH_ALL;
++
++ ret = kdbus_cmd_hello(connfd2, &hello);
++ ASSERT_RETURN(ret == 0);
++
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.offset = hello.offset;
++ ret = kdbus_cmd_free(connfd2, &cmd_free);
++ ASSERT_RETURN(ret >= 0);
++
++ conn_dummy->fd = connfd2;
++ conn_dummy->id = hello.id;
++
++ conn_dst->buf = mmap(NULL, POOL_SIZE, PROT_READ,
++ MAP_SHARED, connfd1, 0);
++ ASSERT_RETURN(conn_dst->buf != MAP_FAILED);
++
++ conn_dummy->buf = mmap(NULL, POOL_SIZE, PROT_READ,
++ MAP_SHARED, connfd2, 0);
++ ASSERT_RETURN(conn_dummy->buf != MAP_FAILED);
++
++ /*
++ * Send fds to connection that do not accept fd passing
++ */
++ ret = send_fds(conn_src, conn_dst->id, fds, 1);
++ ASSERT_RETURN(ret == -ECOMM);
++
++ /*
++ * memfd are kdbus payload
++ */
++ ret = send_memfds(conn_src, conn_dst->id, memfd, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv_poll(conn_dst, 100, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ cookie = time(NULL);
++
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, pid);
++
++ if (pid == 0) {
++ struct timespec now;
++
++ /*
++ * A sync send/reply to a connection that do not
++ * accept fds should fail if it contains an fd
++ */
++ msg_sync_reply = get_kdbus_msg_with_fd(conn_dst,
++ conn_dummy->id,
++ cookie, fds[0]);
++ ASSERT_EXIT(msg_sync_reply);
++
++ ret = clock_gettime(CLOCK_MONOTONIC_COARSE, &now);
++ ASSERT_EXIT(ret == 0);
++
++ msg_sync_reply->timeout_ns = now.tv_sec * 1000000000ULL +
++ now.tv_nsec + 100000000ULL;
++ msg_sync_reply->flags = KDBUS_MSG_EXPECT_REPLY;
++
++ memset(&cmd, 0, sizeof(cmd));
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg_sync_reply;
++ cmd.flags = KDBUS_SEND_SYNC_REPLY;
++
++ ret = kdbus_cmd_send(conn_dst->fd, &cmd);
++ ASSERT_EXIT(ret == -ECOMM);
++
++ /*
++ * Now send a normal message, but the sync reply
++ * will fail since it contains an fd that the
++ * original sender do not want.
++ *
++ * The original sender will fail with -ETIMEDOUT
++ */
++ cookie++;
++ ret = kdbus_msg_send_sync(conn_dst, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ 5000000000ULL, 0, conn_src->id, -1);
++ ASSERT_EXIT(ret == -EREMOTEIO);
++
++ cookie++;
++ ret = kdbus_msg_recv_poll(conn_dst, 100, &msg, NULL);
++ ASSERT_EXIT(ret == 0);
++ ASSERT_EXIT(msg->cookie == cookie);
++
++ free(msg_sync_reply);
++ kdbus_msg_free(msg);
++
++ _exit(EXIT_SUCCESS);
++ }
++
++ ret = kdbus_msg_recv_poll(conn_dummy, 100, NULL, NULL);
++ ASSERT_RETURN(ret == -ETIMEDOUT);
++
++ cookie++;
++ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
++ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++
++ /*
++ * Try to reply with a kdbus connection handle, this should
++ * fail with -EOPNOTSUPP
++ */
++ msg_sync_reply = get_kdbus_msg_with_fd(conn_src,
++ conn_dst->id,
++ cookie, conn_dst->fd);
++ ASSERT_RETURN(msg_sync_reply);
++
++ msg_sync_reply->cookie_reply = cookie;
++
++ memset(&cmd, 0, sizeof(cmd));
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg_sync_reply;
++
++ ret = kdbus_cmd_send(conn_src->fd, &cmd);
++ ASSERT_RETURN(ret == -EOPNOTSUPP);
++
++ free(msg_sync_reply);
++
++ /*
++ * Try to reply with a normal fd, this should fail even
++ * if the response is a sync reply
++ *
++ * From the sender view we fail with -ECOMM
++ */
++ msg_sync_reply = get_kdbus_msg_with_fd(conn_src,
++ conn_dst->id,
++ cookie, fds[0]);
++ ASSERT_RETURN(msg_sync_reply);
++
++ msg_sync_reply->cookie_reply = cookie;
++
++ memset(&cmd, 0, sizeof(cmd));
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg_sync_reply;
++
++ ret = kdbus_cmd_send(conn_src->fd, &cmd);
++ ASSERT_RETURN(ret == -ECOMM);
++
++ free(msg_sync_reply);
++
++ /*
++ * Resend another normal message and check if the queue
++ * is clear
++ */
++ cookie++;
++ ret = kdbus_msg_send(conn_src, NULL, cookie, 0, 0, 0,
++ conn_dst->id);
++ ASSERT_RETURN(ret == 0);
++
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ kdbus_conn_free(conn_dummy);
++ kdbus_conn_free(conn_dst);
++ kdbus_conn_free(conn_src);
++
++ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
++}
++
++static int kdbus_send_multiple_fds(struct kdbus_conn *conn_src,
++ struct kdbus_conn *conn_dst)
++{
++ int ret, i;
++ unsigned int nfds;
++ int fds[KDBUS_CONN_MAX_FDS_PER_USER + 1];
++ int memfds[KDBUS_MSG_MAX_ITEMS + 1];
++ struct kdbus_msg *msg;
++ uint64_t dummy_value;
++
++ dummy_value = time(NULL);
++
++ for (i = 0; i < KDBUS_CONN_MAX_FDS_PER_USER + 1; i++) {
++ fds[i] = open("/dev/null", O_RDWR|O_CLOEXEC);
++ ASSERT_RETURN_VAL(fds[i] >= 0, -errno);
++ }
++
++ /* Send KDBUS_CONN_MAX_FDS_PER_USER with one more fd */
++ ret = send_fds(conn_src, conn_dst->id, fds,
++ KDBUS_CONN_MAX_FDS_PER_USER + 1);
++ ASSERT_RETURN(ret == -EMFILE);
++
++ /* Retry with the correct KDBUS_CONN_MAX_FDS_PER_USER */
++ ret = send_fds(conn_src, conn_dst->id, fds,
++ KDBUS_CONN_MAX_FDS_PER_USER);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* Check we got the right number of fds */
++ nfds = kdbus_item_get_nfds(msg);
++ ASSERT_RETURN(nfds == KDBUS_CONN_MAX_FDS_PER_USER);
++
++ kdbus_msg_free(msg);
++
++ for (i = 0; i < KDBUS_MSG_MAX_ITEMS + 1; i++, dummy_value++) {
++ memfds[i] = memfd_write("memfd-name",
++ &dummy_value,
++ sizeof(dummy_value));
++ ASSERT_RETURN_VAL(memfds[i] >= 0, memfds[i]);
++ }
++
++ /* Send KDBUS_MSG_MAX_ITEMS with one more memfd */
++ ret = send_memfds(conn_src, conn_dst->id,
++ memfds, KDBUS_MSG_MAX_ITEMS + 1);
++ ASSERT_RETURN(ret == -E2BIG);
++
++ ret = send_memfds(conn_src, conn_dst->id,
++ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS + 1);
++ ASSERT_RETURN(ret == -E2BIG);
++
++ /* Retry with the correct KDBUS_MSG_MAX_ITEMS */
++ ret = send_memfds(conn_src, conn_dst->id,
++ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* Check we got the right number of fds */
++ nfds = kdbus_item_get_nfds(msg);
++ ASSERT_RETURN(nfds == KDBUS_MSG_MAX_MEMFD_ITEMS);
++
++ kdbus_msg_free(msg);
++
++
++ /*
++ * Combine multiple KDBUS_CONN_MAX_FDS_PER_USER+1 fds and
++ * 10 memfds
++ */
++ ret = send_fds_memfds(conn_src, conn_dst->id,
++ fds, KDBUS_CONN_MAX_FDS_PER_USER + 1,
++ memfds, 10);
++ ASSERT_RETURN(ret == -EMFILE);
++
++ ret = kdbus_msg_recv(conn_dst, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ /*
++ * Combine multiple KDBUS_CONN_MAX_FDS_PER_USER fds and
++ * (128 - 1) + 1 memfds, all fds take one item, while each
++ * memfd takes one item
++ */
++ ret = send_fds_memfds(conn_src, conn_dst->id,
++ fds, KDBUS_CONN_MAX_FDS_PER_USER,
++ memfds, (KDBUS_MSG_MAX_ITEMS - 1) + 1);
++ ASSERT_RETURN(ret == -E2BIG);
++
++ ret = send_fds_memfds(conn_src, conn_dst->id,
++ fds, KDBUS_CONN_MAX_FDS_PER_USER,
++ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS + 1);
++ ASSERT_RETURN(ret == -E2BIG);
++
++ ret = kdbus_msg_recv(conn_dst, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ /*
++ * Send KDBUS_CONN_MAX_FDS_PER_USER fds +
++ * KDBUS_MSG_MAX_MEMFD_ITEMS memfds
++ */
++ ret = send_fds_memfds(conn_src, conn_dst->id,
++ fds, KDBUS_CONN_MAX_FDS_PER_USER,
++ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* Check we got the right number of fds */
++ nfds = kdbus_item_get_nfds(msg);
++ ASSERT_RETURN(nfds == KDBUS_CONN_MAX_FDS_PER_USER +
++ KDBUS_MSG_MAX_MEMFD_ITEMS);
++
++ kdbus_msg_free(msg);
++
++
++ /*
++ * Re-send fds + memfds, close them, but do not receive them
++ * and try to queue more
++ */
++ ret = send_fds_memfds(conn_src, conn_dst->id,
++ fds, KDBUS_CONN_MAX_FDS_PER_USER,
++ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS);
++ ASSERT_RETURN(ret == 0);
++
++ /* close old references and get a new ones */
++ for (i = 0; i < KDBUS_CONN_MAX_FDS_PER_USER + 1; i++) {
++ close(fds[i]);
++ fds[i] = open("/dev/null", O_RDWR|O_CLOEXEC);
++ ASSERT_RETURN_VAL(fds[i] >= 0, -errno);
++ }
++
++ /* should fail since we have already fds in the queue */
++ ret = send_fds(conn_src, conn_dst->id, fds,
++ KDBUS_CONN_MAX_FDS_PER_USER);
++ ASSERT_RETURN(ret == -EMFILE);
++
++ /* This should succeed */
++ ret = send_memfds(conn_src, conn_dst->id,
++ memfds, KDBUS_MSG_MAX_MEMFD_ITEMS);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ nfds = kdbus_item_get_nfds(msg);
++ ASSERT_RETURN(nfds == KDBUS_CONN_MAX_FDS_PER_USER +
++ KDBUS_MSG_MAX_MEMFD_ITEMS);
++
++ kdbus_msg_free(msg);
++
++ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ nfds = kdbus_item_get_nfds(msg);
++ ASSERT_RETURN(nfds == KDBUS_MSG_MAX_MEMFD_ITEMS);
++
++ kdbus_msg_free(msg);
++
++ ret = kdbus_msg_recv(conn_dst, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ for (i = 0; i < KDBUS_CONN_MAX_FDS_PER_USER + 1; i++)
++ close(fds[i]);
++
++ for (i = 0; i < KDBUS_MSG_MAX_ITEMS + 1; i++)
++ close(memfds[i]);
++
++ return 0;
++}
++
++int kdbus_test_fd_passing(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn_src, *conn_dst;
++ const char *str = "stackenblocken";
++ const struct kdbus_item *item;
++ struct kdbus_msg *msg;
++ unsigned int i;
++ uint64_t now;
++ int fds_conn[2];
++ int sock_pair[2];
++ int fds[2];
++ int memfd;
++ int ret;
++
++ now = (uint64_t) time(NULL);
++
++ /* create two connections */
++ conn_src = kdbus_hello(env->buspath, 0, NULL, 0);
++ conn_dst = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_src && conn_dst);
++
++ fds_conn[0] = conn_src->fd;
++ fds_conn[1] = conn_dst->fd;
++
++ ret = socketpair(AF_UNIX, SOCK_STREAM, 0, sock_pair);
++ ASSERT_RETURN(ret == 0);
++
++ /* Setup memfd */
++ memfd = memfd_write("memfd-name", &now, sizeof(now));
++ ASSERT_RETURN(memfd >= 0);
++
++ /* Setup pipes */
++ ret = pipe(fds);
++ ASSERT_RETURN(ret == 0);
++
++ i = write(fds[1], str, strlen(str));
++ ASSERT_RETURN(i == strlen(str));
++
++ /*
++ * Try to ass the handle of a connection as message payload.
++ * This must fail.
++ */
++ ret = send_fds(conn_src, conn_dst->id, fds_conn, 2);
++ ASSERT_RETURN(ret == -ENOTSUP);
++
++ ret = send_fds(conn_dst, conn_src->id, fds_conn, 2);
++ ASSERT_RETURN(ret == -ENOTSUP);
++
++ ret = send_fds(conn_src, conn_dst->id, sock_pair, 2);
++ ASSERT_RETURN(ret == -ENOTSUP);
++
++ /*
++ * Send fds and memfds to connection that do not accept fds
++ */
++ ret = kdbus_test_no_fds(env, fds, (int *)&memfd);
++ ASSERT_RETURN(ret == 0);
++
++ /* Try to broadcast file descriptors. This must fail. */
++ ret = send_fds(conn_src, KDBUS_DST_ID_BROADCAST, fds, 1);
++ ASSERT_RETURN(ret == -ENOTUNIQ);
++
++ /* Try to broadcast memfd. This must succeed. */
++ ret = send_memfds(conn_src, KDBUS_DST_ID_BROADCAST, (int *)&memfd, 1);
++ ASSERT_RETURN(ret == 0);
++
++ /* Open code this loop */
++loop_send_fds:
++
++ /*
++ * Send the read end of the pipe and close it.
++ */
++ ret = send_fds(conn_src, conn_dst->id, fds, 1);
++ ASSERT_RETURN(ret == 0);
++ close(fds[0]);
++
++ ret = kdbus_msg_recv(conn_dst, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ KDBUS_ITEM_FOREACH(item, msg, items) {
++ if (item->type == KDBUS_ITEM_FDS) {
++ char tmp[14];
++ int nfds = (item->size - KDBUS_ITEM_HEADER_SIZE) /
++ sizeof(int);
++ ASSERT_RETURN(nfds == 1);
++
++ i = read(item->fds[0], tmp, sizeof(tmp));
++ if (i != 0) {
++ ASSERT_RETURN(i == sizeof(tmp));
++ ASSERT_RETURN(memcmp(tmp, str, sizeof(tmp)) == 0);
++
++ /* Write EOF */
++ close(fds[1]);
++
++ /*
++ * Resend the read end of the pipe,
++ * the receiver still holds a reference
++ * to it...
++ */
++ goto loop_send_fds;
++ }
++
++ /* Got EOF */
++
++ /*
++ * Close the last reference to the read end
++ * of the pipe, other references are
++ * automatically closed just after send.
++ */
++ close(item->fds[0]);
++ }
++ }
++
++ /*
++ * Try to resend the read end of the pipe. Must fail with
++ * -EBADF since both the sender and receiver closed their
++ * references to it. We assume the above since sender and
++ * receiver are on the same process.
++ */
++ ret = send_fds(conn_src, conn_dst->id, fds, 1);
++ ASSERT_RETURN(ret == -EBADF);
++
++ /* Then we clear out received any data... */
++ kdbus_msg_free(msg);
++
++ ret = kdbus_send_multiple_fds(conn_src, conn_dst);
++ ASSERT_RETURN(ret == 0);
++
++ close(sock_pair[0]);
++ close(sock_pair[1]);
++ close(memfd);
++
++ kdbus_conn_free(conn_src);
++ kdbus_conn_free(conn_dst);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-free.c b/tools/testing/selftests/kdbus/test-free.c
+new file mode 100644
+index 0000000..f666da3
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-free.c
+@@ -0,0 +1,64 @@
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <stdbool.h>
++
++#include "kdbus-api.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++static int sample_ioctl_call(struct kdbus_test_env *env)
++{
++ int ret;
++ struct kdbus_cmd_list cmd_list = {
++ .flags = KDBUS_LIST_QUEUED,
++ .size = sizeof(cmd_list),
++ };
++
++ ret = kdbus_cmd_list(env->conn->fd, &cmd_list);
++ ASSERT_RETURN(ret == 0);
++
++ /* DON'T FREE THIS SLICE OF MEMORY! */
++
++ return TEST_OK;
++}
++
++int kdbus_test_free(struct kdbus_test_env *env)
++{
++ int ret;
++ struct kdbus_cmd_free cmd_free = {};
++
++ /* free an unallocated buffer */
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.flags = 0;
++ cmd_free.offset = 0;
++ ret = kdbus_cmd_free(env->conn->fd, &cmd_free);
++ ASSERT_RETURN(ret == -ENXIO);
++
++ /* free a buffer out of the pool's bounds */
++ cmd_free.size = sizeof(cmd_free);
++ cmd_free.offset = POOL_SIZE + 1;
++ ret = kdbus_cmd_free(env->conn->fd, &cmd_free);
++ ASSERT_RETURN(ret == -ENXIO);
++
++ /*
++ * The user application is responsible for freeing the allocated
++ * memory with the KDBUS_CMD_FREE ioctl, so let's test what happens
++ * if we forget about it.
++ */
++
++ ret = sample_ioctl_call(env);
++ ASSERT_RETURN(ret == 0);
++
++ ret = sample_ioctl_call(env);
++ ASSERT_RETURN(ret == 0);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-match.c b/tools/testing/selftests/kdbus/test-match.c
+new file mode 100644
+index 0000000..2360dc1
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-match.c
+@@ -0,0 +1,441 @@
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <stdbool.h>
++
++#include "kdbus-api.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++int kdbus_test_match_id_add(struct kdbus_test_env *env)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_notify_id_change chg;
++ } item;
++ } buf;
++ struct kdbus_conn *conn;
++ struct kdbus_msg *msg;
++ int ret;
++
++ memset(&buf, 0, sizeof(buf));
++
++ buf.cmd.size = sizeof(buf);
++ buf.cmd.cookie = 0xdeafbeefdeaddead;
++ buf.item.size = sizeof(buf.item);
++ buf.item.type = KDBUS_ITEM_ID_ADD;
++ buf.item.chg.id = KDBUS_MATCH_ID_ANY;
++
++ /* match on id add */
++ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
++ ASSERT_RETURN(ret == 0);
++
++ /* create 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ /* 1st connection should have received a notification */
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_ID_ADD);
++ ASSERT_RETURN(msg->items[0].id_change.id == conn->id);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
++
++int kdbus_test_match_id_remove(struct kdbus_test_env *env)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_notify_id_change chg;
++ } item;
++ } buf;
++ struct kdbus_conn *conn;
++ struct kdbus_msg *msg;
++ size_t id;
++ int ret;
++
++ /* create 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++ id = conn->id;
++
++ memset(&buf, 0, sizeof(buf));
++ buf.cmd.size = sizeof(buf);
++ buf.cmd.cookie = 0xdeafbeefdeaddead;
++ buf.item.size = sizeof(buf.item);
++ buf.item.type = KDBUS_ITEM_ID_REMOVE;
++ buf.item.chg.id = id;
++
++ /* register match on 2nd connection */
++ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
++ ASSERT_RETURN(ret == 0);
++
++ /* remove 2nd connection again */
++ kdbus_conn_free(conn);
++
++ /* 1st connection should have received a notification */
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_ID_REMOVE);
++ ASSERT_RETURN(msg->items[0].id_change.id == id);
++
++ return TEST_OK;
++}
++
++int kdbus_test_match_replace(struct kdbus_test_env *env)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_notify_id_change chg;
++ } item;
++ } buf;
++ struct kdbus_conn *conn;
++ struct kdbus_msg *msg;
++ size_t id;
++ int ret;
++
++ /* add a match to id_add */
++ ASSERT_RETURN(kdbus_test_match_id_add(env) == TEST_OK);
++
++ /* do a replace of the match from id_add to id_remove */
++ memset(&buf, 0, sizeof(buf));
++
++ buf.cmd.size = sizeof(buf);
++ buf.cmd.cookie = 0xdeafbeefdeaddead;
++ buf.cmd.flags = KDBUS_MATCH_REPLACE;
++ buf.item.size = sizeof(buf.item);
++ buf.item.type = KDBUS_ITEM_ID_REMOVE;
++ buf.item.chg.id = KDBUS_MATCH_ID_ANY;
++
++ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
++
++ /* create 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++ id = conn->id;
++
++ /* 1st connection should _not_ have received a notification */
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret != 0);
++
++ /* remove 2nd connection */
++ kdbus_conn_free(conn);
++
++ /* 1st connection should _now_ have received a notification */
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_ID_REMOVE);
++ ASSERT_RETURN(msg->items[0].id_change.id == id);
++
++ return TEST_OK;
++}
++
++int kdbus_test_match_name_add(struct kdbus_test_env *env)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_notify_name_change chg;
++ } item;
++ char name[64];
++ } buf;
++ struct kdbus_msg *msg;
++ char *name;
++ int ret;
++
++ name = "foo.bla.blaz";
++
++ /* install the match rule */
++ memset(&buf, 0, sizeof(buf));
++ buf.item.type = KDBUS_ITEM_NAME_ADD;
++ buf.item.chg.old_id.id = KDBUS_MATCH_ID_ANY;
++ buf.item.chg.new_id.id = KDBUS_MATCH_ID_ANY;
++ strncpy(buf.name, name, sizeof(buf.name) - 1);
++ buf.item.size = sizeof(buf.item) + strlen(buf.name) + 1;
++ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
++
++ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
++ ASSERT_RETURN(ret == 0);
++
++ /* acquire the name */
++ ret = kdbus_name_acquire(env->conn, name, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* we should have received a notification */
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_NAME_ADD);
++ ASSERT_RETURN(msg->items[0].name_change.old_id.id == 0);
++ ASSERT_RETURN(msg->items[0].name_change.new_id.id == env->conn->id);
++ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
++
++ return TEST_OK;
++}
++
++int kdbus_test_match_name_remove(struct kdbus_test_env *env)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_notify_name_change chg;
++ } item;
++ char name[64];
++ } buf;
++ struct kdbus_msg *msg;
++ char *name;
++ int ret;
++
++ name = "foo.bla.blaz";
++
++ /* acquire the name */
++ ret = kdbus_name_acquire(env->conn, name, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* install the match rule */
++ memset(&buf, 0, sizeof(buf));
++ buf.item.type = KDBUS_ITEM_NAME_REMOVE;
++ buf.item.chg.old_id.id = KDBUS_MATCH_ID_ANY;
++ buf.item.chg.new_id.id = KDBUS_MATCH_ID_ANY;
++ strncpy(buf.name, name, sizeof(buf.name) - 1);
++ buf.item.size = sizeof(buf.item) + strlen(buf.name) + 1;
++ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
++
++ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
++ ASSERT_RETURN(ret == 0);
++
++ /* release the name again */
++ kdbus_name_release(env->conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ /* we should have received a notification */
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_NAME_REMOVE);
++ ASSERT_RETURN(msg->items[0].name_change.old_id.id == env->conn->id);
++ ASSERT_RETURN(msg->items[0].name_change.new_id.id == 0);
++ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
++
++ return TEST_OK;
++}
++
++int kdbus_test_match_name_change(struct kdbus_test_env *env)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ struct kdbus_notify_name_change chg;
++ } item;
++ char name[64];
++ } buf;
++ struct kdbus_conn *conn;
++ struct kdbus_msg *msg;
++ uint64_t flags;
++ char *name = "foo.bla.baz";
++ int ret;
++
++ /* acquire the name */
++ ret = kdbus_name_acquire(env->conn, name, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* install the match rule */
++ memset(&buf, 0, sizeof(buf));
++ buf.item.type = KDBUS_ITEM_NAME_CHANGE;
++ buf.item.chg.old_id.id = KDBUS_MATCH_ID_ANY;
++ buf.item.chg.new_id.id = KDBUS_MATCH_ID_ANY;
++ strncpy(buf.name, name, sizeof(buf.name) - 1);
++ buf.item.size = sizeof(buf.item) + strlen(buf.name) + 1;
++ buf.cmd.size = sizeof(buf.cmd) + buf.item.size;
++
++ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
++ ASSERT_RETURN(ret == 0);
++
++ /* create a 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ /* allow the new connection to own the same name */
++ /* queue the 2nd connection as waiting owner */
++ flags = KDBUS_NAME_QUEUE;
++ ret = kdbus_name_acquire(conn, name, &flags);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(flags & KDBUS_NAME_IN_QUEUE);
++
++ /* release name from 1st connection */
++ ret = kdbus_name_release(env->conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ /* we should have received a notification */
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ASSERT_RETURN(msg->items[0].type == KDBUS_ITEM_NAME_CHANGE);
++ ASSERT_RETURN(msg->items[0].name_change.old_id.id == env->conn->id);
++ ASSERT_RETURN(msg->items[0].name_change.new_id.id == conn->id);
++ ASSERT_RETURN(strcmp(msg->items[0].name_change.name, name) == 0);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
++
++static int send_bloom_filter(const struct kdbus_conn *conn,
++ uint64_t cookie,
++ const uint8_t *filter,
++ size_t filter_size,
++ uint64_t filter_generation)
++{
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_msg *msg;
++ struct kdbus_item *item;
++ uint64_t size;
++ int ret;
++
++ size = sizeof(struct kdbus_msg);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) + filter_size;
++
++ msg = alloca(size);
++
++ memset(msg, 0, size);
++ msg->size = size;
++ msg->src_id = conn->id;
++ msg->dst_id = KDBUS_DST_ID_BROADCAST;
++ msg->flags = KDBUS_MSG_SIGNAL;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++ msg->cookie = cookie;
++
++ item = msg->items;
++ item->type = KDBUS_ITEM_BLOOM_FILTER;
++ item->size = KDBUS_ITEM_SIZE(sizeof(struct kdbus_bloom_filter)) +
++ filter_size;
++
++ item->bloom_filter.generation = filter_generation;
++ memcpy(item->bloom_filter.data, filter, filter_size);
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ ret = kdbus_cmd_send(conn->fd, &cmd);
++ if (ret < 0) {
++ kdbus_printf("error sending message: %d (%m)\n", ret);
++ return ret;
++ }
++
++ return 0;
++}
++
++int kdbus_test_match_bloom(struct kdbus_test_env *env)
++{
++ struct {
++ struct kdbus_cmd_match cmd;
++ struct {
++ uint64_t size;
++ uint64_t type;
++ uint8_t data_gen0[64];
++ uint8_t data_gen1[64];
++ } item;
++ } buf;
++ struct kdbus_conn *conn;
++ struct kdbus_msg *msg;
++ uint64_t cookie = 0xf000f00f;
++ uint8_t filter[64];
++ int ret;
++
++ /* install the match rule */
++ memset(&buf, 0, sizeof(buf));
++ buf.cmd.size = sizeof(buf);
++
++ buf.item.size = sizeof(buf.item);
++ buf.item.type = KDBUS_ITEM_BLOOM_MASK;
++ buf.item.data_gen0[0] = 0x55;
++ buf.item.data_gen0[63] = 0x80;
++
++ buf.item.data_gen1[1] = 0xaa;
++ buf.item.data_gen1[9] = 0x02;
++
++ ret = kdbus_cmd_match_add(env->conn->fd, &buf.cmd);
++ ASSERT_RETURN(ret == 0);
++
++ /* create a 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ /* a message with a 0'ed out filter must not reach the other peer */
++ memset(filter, 0, sizeof(filter));
++ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 0);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ /* now set the filter to the connection's mask and expect success */
++ filter[0] = 0x55;
++ filter[63] = 0x80;
++ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 0);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ /* broaden the filter and try again. this should also succeed. */
++ filter[0] = 0xff;
++ filter[8] = 0xff;
++ filter[63] = 0xff;
++ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 0);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ /* the same filter must not match against bloom generation 1 */
++ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ /* set a different filter and try again */
++ filter[1] = 0xaa;
++ filter[9] = 0x02;
++ ret = send_bloom_filter(conn, ++cookie, filter, sizeof(filter), 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(env->conn, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-message.c b/tools/testing/selftests/kdbus/test-message.c
+new file mode 100644
+index 0000000..f1615da
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-message.c
+@@ -0,0 +1,731 @@
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <time.h>
++#include <stdbool.h>
++#include <sys/eventfd.h>
++#include <sys/types.h>
++#include <sys/wait.h>
++
++#include "kdbus-api.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++/* maximum number of queued messages from the same individual user */
++#define KDBUS_CONN_MAX_MSGS 256
++
++/* maximum number of queued requests waiting for a reply */
++#define KDBUS_CONN_MAX_REQUESTS_PENDING 128
++
++/* maximum message payload size */
++#define KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE (2 * 1024UL * 1024UL)
++
++int kdbus_test_message_basic(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn;
++ struct kdbus_conn *sender;
++ struct kdbus_msg *msg;
++ uint64_t cookie = 0x1234abcd5678eeff;
++ uint64_t offset;
++ int ret;
++
++ sender = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(sender != NULL);
++
++ /* create a 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ ret = kdbus_add_match_empty(conn);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_add_match_empty(sender);
++ ASSERT_RETURN(ret == 0);
++
++ /* send over 1st connection */
++ ret = kdbus_msg_send(sender, NULL, cookie, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ /* Make sure that we do not get our own broadcasts */
++ ret = kdbus_msg_recv(sender, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ /* ... and receive on the 2nd */
++ ret = kdbus_msg_recv_poll(conn, 100, &msg, &offset);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++
++ /* Msgs that expect a reply must have timeout and cookie */
++ ret = kdbus_msg_send(sender, NULL, 0, KDBUS_MSG_EXPECT_REPLY,
++ 0, 0, conn->id);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* Faked replies with a valid reply cookie are rejected */
++ ret = kdbus_msg_send_reply(conn, time(NULL) ^ cookie, sender->id);
++ ASSERT_RETURN(ret == -EPERM);
++
++ ret = kdbus_free(conn, offset);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(sender);
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
++
++static int msg_recv_prio(struct kdbus_conn *conn,
++ int64_t requested_prio,
++ int64_t expected_prio)
++{
++ struct kdbus_cmd_recv recv = {
++ .size = sizeof(recv),
++ .flags = KDBUS_RECV_USE_PRIORITY,
++ .priority = requested_prio,
++ };
++ struct kdbus_msg *msg;
++ int ret;
++
++ ret = kdbus_cmd_recv(conn->fd, &recv);
++ if (ret < 0) {
++ kdbus_printf("error receiving message: %d (%m)\n", -errno);
++ return ret;
++ }
++
++ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
++ kdbus_msg_dump(conn, msg);
++
++ if (msg->priority != expected_prio) {
++ kdbus_printf("expected message prio %lld, got %lld\n",
++ (unsigned long long) expected_prio,
++ (unsigned long long) msg->priority);
++ return -EINVAL;
++ }
++
++ kdbus_msg_free(msg);
++ ret = kdbus_free(conn, recv.msg.offset);
++ if (ret < 0)
++ return ret;
++
++ return 0;
++}
++
++int kdbus_test_message_prio(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *a, *b;
++ uint64_t cookie = 0;
++
++ a = kdbus_hello(env->buspath, 0, NULL, 0);
++ b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(a && b);
++
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, 25, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -600, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, 10, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -35, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -100, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, 20, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -15, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -800, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -150, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, 10, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -800, a->id) == 0);
++ ASSERT_RETURN(kdbus_msg_send(b, NULL, ++cookie, 0, 0, -10, a->id) == 0);
++
++ ASSERT_RETURN(msg_recv_prio(a, -200, -800) == 0);
++ ASSERT_RETURN(msg_recv_prio(a, -100, -800) == 0);
++ ASSERT_RETURN(msg_recv_prio(a, -400, -600) == 0);
++ ASSERT_RETURN(msg_recv_prio(a, -400, -600) == -EAGAIN);
++ ASSERT_RETURN(msg_recv_prio(a, 10, -150) == 0);
++ ASSERT_RETURN(msg_recv_prio(a, 10, -100) == 0);
++
++ kdbus_printf("--- get priority (all)\n");
++ ASSERT_RETURN(kdbus_msg_recv(a, NULL, NULL) == 0);
++
++ kdbus_conn_free(a);
++ kdbus_conn_free(b);
++
++ return TEST_OK;
++}
++
++static int kdbus_test_notify_kernel_quota(struct kdbus_test_env *env)
++{
++ int ret;
++ unsigned int i;
++ struct kdbus_conn *conn;
++ struct kdbus_conn *reader;
++ struct kdbus_msg *msg = NULL;
++ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
++
++ reader = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(reader);
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ /* Register for ID signals */
++ ret = kdbus_add_match_id(reader, 0x1, KDBUS_ITEM_ID_ADD,
++ KDBUS_MATCH_ID_ANY);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_add_match_id(reader, 0x2, KDBUS_ITEM_ID_REMOVE,
++ KDBUS_MATCH_ID_ANY);
++ ASSERT_RETURN(ret == 0);
++
++ /* Each iteration two notifications: add and remove ID */
++ for (i = 0; i < KDBUS_CONN_MAX_MSGS / 2; i++) {
++ struct kdbus_conn *notifier;
++
++ notifier = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(notifier);
++
++ kdbus_conn_free(notifier);
++ }
++
++ /*
++ * Now the reader queue is full with kernel notfications,
++ * but as a user we still have room to push our messages.
++ */
++ ret = kdbus_msg_send(conn, NULL, 0xdeadbeef, 0, 0, 0, reader->id);
++ ASSERT_RETURN(ret == 0);
++
++ /* More ID kernel notifications that will be lost */
++ kdbus_conn_free(conn);
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ kdbus_conn_free(conn);
++
++ /*
++ * We lost only 3 packets since only signal msgs are
++ * accounted. The connection ID add/remove notification
++ */
++ ret = kdbus_cmd_recv(reader->fd, &recv);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(recv.return_flags & KDBUS_RECV_RETURN_DROPPED_MSGS);
++ ASSERT_RETURN(recv.dropped_msgs == 3);
++
++ msg = (struct kdbus_msg *)(reader->buf + recv.msg.offset);
++ kdbus_msg_free(msg);
++
++ /* Read our queue */
++ for (i = 0; i < KDBUS_CONN_MAX_MSGS - 1; i++) {
++ memset(&recv, 0, sizeof(recv));
++ recv.size = sizeof(recv);
++
++ ret = kdbus_cmd_recv(reader->fd, &recv);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(!(recv.return_flags &
++ KDBUS_RECV_RETURN_DROPPED_MSGS));
++
++ msg = (struct kdbus_msg *)(reader->buf + recv.msg.offset);
++ kdbus_msg_free(msg);
++ }
++
++ ret = kdbus_msg_recv(reader, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(reader, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ kdbus_conn_free(reader);
++
++ return 0;
++}
++
++/* Return the number of message successfully sent */
++static int kdbus_fill_conn_queue(struct kdbus_conn *conn_src,
++ uint64_t dst_id,
++ unsigned int max_msgs)
++{
++ unsigned int i;
++ uint64_t cookie = 0;
++ size_t size;
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_msg *msg;
++ int ret;
++
++ size = sizeof(struct kdbus_msg);
++ msg = malloc(size);
++ ASSERT_RETURN_VAL(msg, -ENOMEM);
++
++ memset(msg, 0, size);
++ msg->size = size;
++ msg->src_id = conn_src->id;
++ msg->dst_id = dst_id;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ for (i = 0; i < max_msgs; i++) {
++ msg->cookie = cookie++;
++ ret = kdbus_cmd_send(conn_src->fd, &cmd);
++ if (ret < 0)
++ break;
++ }
++
++ free(msg);
++
++ return i;
++}
++
++static int kdbus_test_activator_quota(struct kdbus_test_env *env)
++{
++ int ret;
++ unsigned int i;
++ unsigned int activator_msgs_count = 0;
++ uint64_t cookie = time(NULL);
++ struct kdbus_conn *conn;
++ struct kdbus_conn *sender;
++ struct kdbus_conn *activator;
++ struct kdbus_msg *msg;
++ uint64_t flags = KDBUS_NAME_REPLACE_EXISTING;
++ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
++ struct kdbus_policy_access access = {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = geteuid(),
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ activator = kdbus_hello_activator(env->buspath, "foo.test.activator",
++ &access, 1);
++ ASSERT_RETURN(activator);
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ sender = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn || sender);
++
++ ret = kdbus_list(sender, KDBUS_LIST_NAMES |
++ KDBUS_LIST_UNIQUE |
++ KDBUS_LIST_ACTIVATORS |
++ KDBUS_LIST_QUEUED);
++ ASSERT_RETURN(ret == 0);
++
++ for (i = 0; i < KDBUS_CONN_MAX_MSGS; i++) {
++ ret = kdbus_msg_send(sender, "foo.test.activator",
++ cookie++, 0, 0, 0,
++ KDBUS_DST_ID_NAME);
++ if (ret < 0)
++ break;
++ activator_msgs_count++;
++ }
++
++ /* we must have at least sent one message */
++ ASSERT_RETURN_VAL(i > 0, -errno);
++ ASSERT_RETURN(ret == -ENOBUFS);
++
++ /* Good, activator queue is full now */
++
++ /* ENXIO on direct send (activators can never be addressed by ID) */
++ ret = kdbus_msg_send(conn, NULL, cookie++, 0, 0, 0, activator->id);
++ ASSERT_RETURN(ret == -ENXIO);
++
++ /* can't queue more */
++ ret = kdbus_msg_send(conn, "foo.test.activator", cookie++,
++ 0, 0, 0, KDBUS_DST_ID_NAME);
++ ASSERT_RETURN(ret == -ENOBUFS);
++
++ /* no match installed, so the broadcast will not inc dropped_msgs */
++ ret = kdbus_msg_send(sender, NULL, cookie++, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ /* Check activator queue */
++ ret = kdbus_cmd_recv(activator->fd, &recv);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(recv.dropped_msgs == 0);
++
++ activator_msgs_count--;
++
++ msg = (struct kdbus_msg *)(activator->buf + recv.msg.offset);
++ kdbus_msg_free(msg);
++
++
++ /* Stage 1) of test check the pool memory quota */
++
++ /* Consume the connection pool memory */
++ for (i = 0; i < KDBUS_CONN_MAX_MSGS; i++) {
++ ret = kdbus_msg_send(sender, NULL,
++ cookie++, 0, 0, 0, conn->id);
++ if (ret < 0)
++ break;
++ }
++
++ /* consume one message, so later at least one can be moved */
++ memset(&recv, 0, sizeof(recv));
++ recv.size = sizeof(recv);
++ ret = kdbus_cmd_recv(conn->fd, &recv);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(recv.dropped_msgs == 0);
++ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
++ kdbus_msg_free(msg);
++
++ /* Try to acquire the name now */
++ ret = kdbus_name_acquire(conn, "foo.test.activator", &flags);
++ ASSERT_RETURN(ret == 0);
++
++ /* try to read messages and see if we have lost some */
++ memset(&recv, 0, sizeof(recv));
++ recv.size = sizeof(recv);
++ ret = kdbus_cmd_recv(conn->fd, &recv);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(recv.dropped_msgs != 0);
++
++ /* number of dropped msgs < received ones (at least one was moved) */
++ ASSERT_RETURN(recv.dropped_msgs < activator_msgs_count);
++
++ /* Deduct the number of dropped msgs from the activator msgs */
++ activator_msgs_count -= recv.dropped_msgs;
++
++ msg = (struct kdbus_msg *)(activator->buf + recv.msg.offset);
++ kdbus_msg_free(msg);
++
++ /*
++ * Release the name and hand it back to activator, now
++ * we should have 'activator_msgs_count' msgs again in
++ * the activator queue
++ */
++ ret = kdbus_name_release(conn, "foo.test.activator");
++ ASSERT_RETURN(ret == 0);
++
++ /* make sure that we got our previous activator msgs */
++ ret = kdbus_msg_recv(activator, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->src_id == sender->id);
++
++ activator_msgs_count--;
++
++ kdbus_msg_free(msg);
++
++
++ /* Stage 2) of test check max message quota */
++
++ /* Empty conn queue */
++ for (i = 0; i < KDBUS_CONN_MAX_MSGS; i++) {
++ ret = kdbus_msg_recv(conn, NULL, NULL);
++ if (ret == -EAGAIN)
++ break;
++ }
++
++ /* fill queue with max msgs quota */
++ ret = kdbus_fill_conn_queue(sender, conn->id, KDBUS_CONN_MAX_MSGS);
++ ASSERT_RETURN(ret == KDBUS_CONN_MAX_MSGS);
++
++ /* This one is lost but it is not accounted */
++ ret = kdbus_msg_send(sender, NULL,
++ cookie++, 0, 0, 0, conn->id);
++ ASSERT_RETURN(ret == -ENOBUFS);
++
++ /* Acquire the name again */
++ ret = kdbus_name_acquire(conn, "foo.test.activator", &flags);
++ ASSERT_RETURN(ret == 0);
++
++ memset(&recv, 0, sizeof(recv));
++ recv.size = sizeof(recv);
++
++ /*
++ * Try to read messages and make sure that we have lost all
++ * the activator messages due to quota checks. Our queue is
++ * already full.
++ */
++ ret = kdbus_cmd_recv(conn->fd, &recv);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(recv.dropped_msgs == activator_msgs_count);
++
++ msg = (struct kdbus_msg *)(activator->buf + recv.msg.offset);
++ kdbus_msg_free(msg);
++
++ kdbus_conn_free(sender);
++ kdbus_conn_free(conn);
++ kdbus_conn_free(activator);
++
++ return 0;
++}
++
++static int kdbus_test_expected_reply_quota(struct kdbus_test_env *env)
++{
++ int ret;
++ unsigned int i, n;
++ unsigned int count;
++ uint64_t cookie = 0x1234abcd5678eeff;
++ struct kdbus_conn *conn;
++ struct kdbus_conn *connections[9];
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ for (i = 0; i < 9; i++) {
++ connections[i] = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(connections[i]);
++ }
++
++ count = 0;
++ /* Send 16 messages to 8 different connections */
++ for (i = 0; i < 8; i++) {
++ for (n = 0; n < 16; n++) {
++ ret = kdbus_msg_send(conn, NULL, cookie++,
++ KDBUS_MSG_EXPECT_REPLY,
++ 100000000ULL, 0,
++ connections[i]->id);
++ if (ret < 0)
++ break;
++
++ count++;
++ }
++ }
++
++ /*
++ * We should have queued at least
++ * KDBUS_CONN_MAX_REQUESTS_PENDING method call
++ */
++ ASSERT_RETURN(count == KDBUS_CONN_MAX_REQUESTS_PENDING);
++
++ /*
++ * Now try to send a message to the last connection,
++ * if we have reached KDBUS_CONN_MAX_REQUESTS_PENDING
++ * no further requests are allowed
++ */
++ ret = kdbus_msg_send(conn, NULL, cookie++, KDBUS_MSG_EXPECT_REPLY,
++ 1000000000ULL, 0, connections[8]->id);
++ ASSERT_RETURN(ret == -EMLINK);
++
++ for (i = 0; i < 9; i++)
++ kdbus_conn_free(connections[i]);
++
++ kdbus_conn_free(conn);
++
++ return 0;
++}
++
++int kdbus_test_pool_quota(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *a, *b, *c;
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_item *item;
++ struct kdbus_msg *recv_msg;
++ struct kdbus_msg *msg;
++ uint64_t cookie = time(NULL);
++ uint64_t size;
++ unsigned int i;
++ char *payload;
++ int ret;
++
++ /* just a guard */
++ if (POOL_SIZE <= KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE ||
++ POOL_SIZE % KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE != 0)
++ return 0;
++
++ payload = calloc(KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE, sizeof(char));
++ ASSERT_RETURN_VAL(payload, -ENOMEM);
++
++ a = kdbus_hello(env->buspath, 0, NULL, 0);
++ b = kdbus_hello(env->buspath, 0, NULL, 0);
++ c = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(a && b && c);
++
++ size = sizeof(struct kdbus_msg);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++
++ msg = malloc(size);
++ ASSERT_RETURN_VAL(msg, -ENOMEM);
++
++ memset(msg, 0, size);
++ msg->size = size;
++ msg->src_id = a->id;
++ msg->dst_id = c->id;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++
++ item = msg->items;
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = (uintptr_t)payload;
++ item->vec.size = KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE;
++ item = KDBUS_ITEM_NEXT(item);
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ /*
++ * Send 2097248 bytes, a user is only allowed to get 33% of half of
++ * the free space of the pool, the already used space is
++ * accounted as free space
++ */
++ size += KDBUS_MSG_MAX_PAYLOAD_VEC_SIZE;
++ for (i = size; i < (POOL_SIZE / 2 / 3); i += size) {
++ msg->cookie = cookie++;
++
++ ret = kdbus_cmd_send(a->fd, &cmd);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++ }
++
++ /* Try to get more than 33% */
++ msg->cookie = cookie++;
++ ret = kdbus_cmd_send(a->fd, &cmd);
++ ASSERT_RETURN(ret == -ENOBUFS);
++
++ /* We still can pass small messages */
++ ret = kdbus_msg_send(b, NULL, cookie++, 0, 0, 0, c->id);
++ ASSERT_RETURN(ret == 0);
++
++ for (i = size; i < (POOL_SIZE / 2 / 3); i += size) {
++ ret = kdbus_msg_recv(c, &recv_msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(recv_msg->src_id == a->id);
++
++ kdbus_msg_free(recv_msg);
++ }
++
++ ret = kdbus_msg_recv(c, &recv_msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(recv_msg->src_id == b->id);
++
++ kdbus_msg_free(recv_msg);
++
++ ret = kdbus_msg_recv(c, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ free(msg);
++ free(payload);
++
++ kdbus_conn_free(c);
++ kdbus_conn_free(b);
++ kdbus_conn_free(a);
++
++ return 0;
++}
++
++int kdbus_test_message_quota(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *a, *b;
++ uint64_t cookie = 0;
++ int ret;
++ int i;
++
++ ret = kdbus_test_activator_quota(env);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_test_notify_kernel_quota(env);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_test_pool_quota(env);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_test_expected_reply_quota(env);
++ ASSERT_RETURN(ret == 0);
++
++ a = kdbus_hello(env->buspath, 0, NULL, 0);
++ b = kdbus_hello(env->buspath, 0, NULL, 0);
++
++ ret = kdbus_fill_conn_queue(b, a->id, KDBUS_CONN_MAX_MSGS);
++ ASSERT_RETURN(ret == KDBUS_CONN_MAX_MSGS);
++
++ ret = kdbus_msg_send(b, NULL, ++cookie, 0, 0, 0, a->id);
++ ASSERT_RETURN(ret == -ENOBUFS);
++
++ for (i = 0; i < KDBUS_CONN_MAX_MSGS; ++i) {
++ ret = kdbus_msg_recv(a, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++ }
++
++ ret = kdbus_msg_recv(a, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ ret = kdbus_fill_conn_queue(b, a->id, KDBUS_CONN_MAX_MSGS + 1);
++ ASSERT_RETURN(ret == KDBUS_CONN_MAX_MSGS);
++
++ ret = kdbus_msg_send(b, NULL, ++cookie, 0, 0, 0, a->id);
++ ASSERT_RETURN(ret == -ENOBUFS);
++
++ kdbus_conn_free(a);
++ kdbus_conn_free(b);
++
++ return TEST_OK;
++}
++
++int kdbus_test_memory_access(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *a, *b;
++ struct kdbus_cmd_send cmd = {};
++ struct kdbus_item *item;
++ struct kdbus_msg *msg;
++ uint64_t test_addr = 0;
++ char line[256];
++ uint64_t size;
++ FILE *f;
++ int ret;
++
++ /*
++ * Search in /proc/kallsyms for the address of a kernel symbol that
++ * should always be there, regardless of the config. Use that address
++ * in a PAYLOAD_VEC item and make sure it's inaccessible.
++ */
++
++ f = fopen("/proc/kallsyms", "r");
++ if (!f)
++ return TEST_SKIP;
++
++ while (fgets(line, sizeof(line), f)) {
++ char *s = line;
++
++ if (!strsep(&s, " "))
++ continue;
++
++ if (!strsep(&s, " "))
++ continue;
++
++ if (!strncmp(s, "mutex_lock", 10)) {
++ test_addr = strtoull(line, NULL, 16);
++ break;
++ }
++ }
++
++ fclose(f);
++
++ if (!test_addr)
++ return TEST_SKIP;
++
++ a = kdbus_hello(env->buspath, 0, NULL, 0);
++ b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(a && b);
++
++ size = sizeof(struct kdbus_msg);
++ size += KDBUS_ITEM_SIZE(sizeof(struct kdbus_vec));
++
++ msg = alloca(size);
++ ASSERT_RETURN_VAL(msg, -ENOMEM);
++
++ memset(msg, 0, size);
++ msg->size = size;
++ msg->src_id = a->id;
++ msg->dst_id = b->id;
++ msg->payload_type = KDBUS_PAYLOAD_DBUS;
++
++ item = msg->items;
++ item->type = KDBUS_ITEM_PAYLOAD_VEC;
++ item->size = KDBUS_ITEM_HEADER_SIZE + sizeof(struct kdbus_vec);
++ item->vec.address = test_addr;
++ item->vec.size = sizeof(void*);
++ item = KDBUS_ITEM_NEXT(item);
++
++ cmd.size = sizeof(cmd);
++ cmd.msg_address = (uintptr_t)msg;
++
++ ret = kdbus_cmd_send(a->fd, &cmd);
++ ASSERT_RETURN(ret == -EFAULT);
++
++ kdbus_conn_free(b);
++ kdbus_conn_free(a);
++
++ return 0;
++}
+diff --git a/tools/testing/selftests/kdbus/test-metadata-ns.c b/tools/testing/selftests/kdbus/test-metadata-ns.c
+new file mode 100644
+index 0000000..2cb1d4d
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-metadata-ns.c
+@@ -0,0 +1,506 @@
++/*
++ * Test metadata in new namespaces. Even if our tests can run
++ * in a namespaced setup, this test is necessary so we can inspect
++ * metadata on the same kdbusfs but between multiple namespaces
++ */
++
++#include <stdio.h>
++#include <string.h>
++#include <sched.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <signal.h>
++#include <sys/wait.h>
++#include <sys/prctl.h>
++#include <sys/eventfd.h>
++#include <sys/syscall.h>
++#include <sys/capability.h>
++#include <linux/sched.h>
++
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++static const struct kdbus_creds privileged_creds = {};
++
++static const struct kdbus_creds unmapped_creds = {
++ .uid = UNPRIV_UID,
++ .euid = UNPRIV_UID,
++ .suid = UNPRIV_UID,
++ .fsuid = UNPRIV_UID,
++ .gid = UNPRIV_GID,
++ .egid = UNPRIV_GID,
++ .sgid = UNPRIV_GID,
++ .fsgid = UNPRIV_GID,
++};
++
++static const struct kdbus_pids unmapped_pids = {};
++
++/* Get only the first item */
++static struct kdbus_item *kdbus_get_item(struct kdbus_msg *msg,
++ uint64_t type)
++{
++ struct kdbus_item *item;
++
++ KDBUS_ITEM_FOREACH(item, msg, items)
++ if (item->type == type)
++ return item;
++
++ return NULL;
++}
++
++static int kdbus_match_kdbus_creds(struct kdbus_msg *msg,
++ const struct kdbus_creds *expected_creds)
++{
++ struct kdbus_item *item;
++
++ item = kdbus_get_item(msg, KDBUS_ITEM_CREDS);
++ ASSERT_RETURN(item);
++
++ ASSERT_RETURN(memcmp(&item->creds, expected_creds,
++ sizeof(struct kdbus_creds)) == 0);
++
++ return 0;
++}
++
++static int kdbus_match_kdbus_pids(struct kdbus_msg *msg,
++ const struct kdbus_pids *expected_pids)
++{
++ struct kdbus_item *item;
++
++ item = kdbus_get_item(msg, KDBUS_ITEM_PIDS);
++ ASSERT_RETURN(item);
++
++ ASSERT_RETURN(memcmp(&item->pids, expected_pids,
++ sizeof(struct kdbus_pids)) == 0);
++
++ return 0;
++}
++
++static int __kdbus_clone_userns_test(const char *bus,
++ struct kdbus_conn *conn,
++ uint64_t grandpa_pid,
++ int signal_fd)
++{
++ int clone_ret;
++ int ret;
++ struct kdbus_msg *msg = NULL;
++ const struct kdbus_item *item;
++ uint64_t cookie = time(NULL) ^ 0xdeadbeef;
++ struct kdbus_conn *unpriv_conn = NULL;
++ struct kdbus_pids parent_pids = {
++ .pid = getppid(),
++ .tid = getppid(),
++ .ppid = grandpa_pid,
++ };
++
++ ret = drop_privileges(UNPRIV_UID, UNPRIV_GID);
++ ASSERT_EXIT(ret == 0);
++
++ unpriv_conn = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_EXIT(unpriv_conn);
++
++ ret = kdbus_add_match_empty(unpriv_conn);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * ping privileged connection from this new unprivileged
++ * one
++ */
++
++ ret = kdbus_msg_send(unpriv_conn, NULL, cookie, 0, 0,
++ 0, conn->id);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * Since we just dropped privileges, the dumpable flag
++ * was just cleared which makes the /proc/$clone_child/uid_map
++ * to be owned by root, hence any userns uid mapping will fail
++ * with -EPERM since the mapping will be done by uid 65534.
++ *
++ * To avoid this set the dumpable flag again which makes
++ * procfs update the /proc/$clone_child/ inodes owner to 65534.
++ *
++ * Using this we will be able write to /proc/$clone_child/uid_map
++ * as uid 65534 and map the uid 65534 to 0 inside the user namespace.
++ */
++ ret = prctl(PR_SET_DUMPABLE, SUID_DUMP_USER);
++ ASSERT_EXIT(ret == 0);
++
++ /* Make child privileged in its new userns and run tests */
++
++ ret = RUN_CLONE_CHILD(&clone_ret,
++ SIGCHLD | CLONE_NEWUSER | CLONE_NEWPID,
++ ({ 0; /* Clone setup, nothing */ }),
++ ({
++ eventfd_t event_status = 0;
++ struct kdbus_conn *userns_conn;
++
++ /* ping connection from the new user namespace */
++ userns_conn = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_EXIT(userns_conn);
++
++ ret = kdbus_add_match_empty(userns_conn);
++ ASSERT_EXIT(ret == 0);
++
++ cookie++;
++ ret = kdbus_msg_send(userns_conn, NULL, cookie,
++ 0, 0, 0, conn->id);
++ ASSERT_EXIT(ret == 0);
++
++ /* Parent did send */
++ ret = eventfd_read(signal_fd, &event_status);
++ ASSERT_RETURN(ret >= 0 && event_status == 1);
++
++ /*
++ * Receive from privileged connection
++ */
++ kdbus_printf("Privileged → unprivileged/privileged "
++ "in its userns "
++ "(different userns and pidns):\n");
++ ret = kdbus_msg_recv_poll(userns_conn, 300, &msg, NULL);
++ ASSERT_EXIT(ret == 0);
++ ASSERT_EXIT(msg->dst_id == userns_conn->id);
++
++ /* Different namespaces no CAPS */
++ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
++ ASSERT_EXIT(item == NULL);
++
++ /* uid/gid not mapped, so we have unpriv cached creds */
++ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * Diffent pid namepsaces. This is the child pidns
++ * so it should not see its parent kdbus_pids
++ */
++ ret = kdbus_match_kdbus_pids(msg, &unmapped_pids);
++ ASSERT_EXIT(ret == 0);
++
++ kdbus_msg_free(msg);
++
++
++ /*
++ * Receive broadcast from privileged connection
++ */
++ kdbus_printf("Privileged → unprivileged/privileged "
++ "in its userns "
++ "(different userns and pidns):\n");
++ ret = kdbus_msg_recv_poll(userns_conn, 300, &msg, NULL);
++ ASSERT_EXIT(ret == 0);
++ ASSERT_EXIT(msg->dst_id == KDBUS_DST_ID_BROADCAST);
++
++ /* Different namespaces no CAPS */
++ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
++ ASSERT_EXIT(item == NULL);
++
++ /* uid/gid not mapped, so we have unpriv cached creds */
++ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * Diffent pid namepsaces. This is the child pidns
++ * so it should not see its parent kdbus_pids
++ */
++ ret = kdbus_match_kdbus_pids(msg, &unmapped_pids);
++ ASSERT_EXIT(ret == 0);
++
++ kdbus_msg_free(msg);
++
++ kdbus_conn_free(userns_conn);
++ }),
++ ({
++ /* Parent setup map child uid/gid */
++ ret = userns_map_uid_gid(pid, "0 65534 1", "0 65534 1");
++ ASSERT_EXIT(ret == 0);
++ }),
++ ({ 0; }));
++ /* Unprivileged was not able to create user namespace */
++ if (clone_ret == -EPERM) {
++ kdbus_printf("-- CLONE_NEWUSER TEST Failed for "
++ "uid: %u\n -- Make sure that your kernel "
++ "do not allow CLONE_NEWUSER for "
++ "unprivileged users\n", UNPRIV_UID);
++ ret = 0;
++ goto out;
++ }
++
++ ASSERT_EXIT(ret == 0);
++
++
++ /*
++ * Receive from privileged connection
++ */
++ kdbus_printf("\nPrivileged → unprivileged (same namespaces):\n");
++ ret = kdbus_msg_recv_poll(unpriv_conn, 300, &msg, NULL);
++
++ ASSERT_EXIT(ret == 0);
++ ASSERT_EXIT(msg->dst_id == unpriv_conn->id);
++
++ /* will get the privileged creds */
++ ret = kdbus_match_kdbus_creds(msg, &privileged_creds);
++ ASSERT_EXIT(ret == 0);
++
++ /* Same pidns so will get the kdbus_pids */
++ ret = kdbus_match_kdbus_pids(msg, &parent_pids);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_msg_free(msg);
++
++
++ /*
++ * Receive broadcast from privileged connection
++ */
++ kdbus_printf("\nPrivileged → unprivileged (same namespaces):\n");
++ ret = kdbus_msg_recv_poll(unpriv_conn, 300, &msg, NULL);
++
++ ASSERT_EXIT(ret == 0);
++ ASSERT_EXIT(msg->dst_id == KDBUS_DST_ID_BROADCAST);
++
++ /* will get the privileged creds */
++ ret = kdbus_match_kdbus_creds(msg, &privileged_creds);
++ ASSERT_EXIT(ret == 0);
++
++ ret = kdbus_match_kdbus_pids(msg, &parent_pids);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_msg_free(msg);
++
++out:
++ kdbus_conn_free(unpriv_conn);
++
++ return ret;
++}
++
++static int kdbus_clone_userns_test(const char *bus,
++ struct kdbus_conn *conn)
++{
++ int ret;
++ int status;
++ int efd = -1;
++ pid_t pid, ppid;
++ uint64_t unpriv_conn_id = 0;
++ uint64_t userns_conn_id = 0;
++ struct kdbus_msg *msg;
++ const struct kdbus_item *item;
++ struct kdbus_pids expected_pids;
++ struct kdbus_conn *monitor = NULL;
++
++ kdbus_printf("STARTING TEST 'metadata-ns'.\n");
++
++ monitor = kdbus_hello(bus, KDBUS_HELLO_MONITOR, NULL, 0);
++ ASSERT_EXIT(monitor);
++
++ /*
++ * parent will signal to child that is in its
++ * userns to read its queue
++ */
++ efd = eventfd(0, EFD_CLOEXEC);
++ ASSERT_RETURN_VAL(efd >= 0, efd);
++
++ ppid = getppid();
++
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, -errno);
++
++ if (pid == 0) {
++ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
++ ASSERT_EXIT_VAL(ret == 0, -errno);
++
++ ret = __kdbus_clone_userns_test(bus, conn, ppid, efd);
++ _exit(ret);
++ }
++
++
++ /* Phase 1) privileged receives from unprivileged */
++
++ /*
++ * Receive from the unprivileged child
++ */
++ kdbus_printf("\nUnprivileged → privileged (same namespaces):\n");
++ ret = kdbus_msg_recv_poll(conn, 300, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ unpriv_conn_id = msg->src_id;
++
++ /* Unprivileged user */
++ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
++ ASSERT_RETURN(ret == 0);
++
++ /* Set the expected creds_pids */
++ expected_pids = (struct kdbus_pids) {
++ .pid = pid,
++ .tid = pid,
++ .ppid = getpid(),
++ };
++ ret = kdbus_match_kdbus_pids(msg, &expected_pids);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_msg_free(msg);
++
++
++ /*
++ * Receive from the unprivileged that is in his own
++ * userns and pidns
++ */
++
++ kdbus_printf("\nUnprivileged/privileged in its userns → privileged "
++ "(different userns and pidns)\n");
++ ret = kdbus_msg_recv_poll(conn, 300, &msg, NULL);
++ if (ret == -ETIMEDOUT)
++ /* perhaps unprivileged userns is not allowed */
++ goto wait;
++
++ ASSERT_RETURN(ret == 0);
++
++ userns_conn_id = msg->src_id;
++
++ /* We do not share the userns, os no KDBUS_ITEM_CAPS */
++ item = kdbus_get_item(msg, KDBUS_ITEM_CAPS);
++ ASSERT_RETURN(item == NULL);
++
++ /*
++ * Compare received items, creds must be translated into
++ * the receiver user namespace, so the user is unprivileged
++ */
++ ret = kdbus_match_kdbus_creds(msg, &unmapped_creds);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * We should have the kdbus_pids since we are the parent
++ * pidns
++ */
++ item = kdbus_get_item(msg, KDBUS_ITEM_PIDS);
++ ASSERT_RETURN(item);
++
++ ASSERT_RETURN(memcmp(&item->pids, &unmapped_pids,
++ sizeof(struct kdbus_pids)) != 0);
++
++ /*
++ * Parent pid of the unprivileged/privileged in its userns
++ * is the unprivileged child pid that was forked here.
++ */
++ ASSERT_RETURN((uint64_t)pid == item->pids.ppid);
++
++ kdbus_msg_free(msg);
++
++
++ /* Phase 2) Privileged connection sends now 3 packets */
++
++ /*
++ * Sending to unprivileged connections a unicast
++ */
++ ret = kdbus_msg_send(conn, NULL, 0xdeadbeef, 0, 0,
++ 0, unpriv_conn_id);
++ ASSERT_RETURN(ret == 0);
++
++ /* signal to child that is in its userns */
++ ret = eventfd_write(efd, 1);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * Sending to unprivileged/privilged in its userns
++ * connections a unicast
++ */
++ ret = kdbus_msg_send(conn, NULL, 0xdeadbeef, 0, 0,
++ 0, userns_conn_id);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Sending to unprivileged connections a broadcast
++ */
++ ret = kdbus_msg_send(conn, NULL, 0xdeadbeef, 0, 0,
++ 0, KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++
++wait:
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN(ret >= 0);
++
++ ASSERT_RETURN(WIFEXITED(status))
++ ASSERT_RETURN(!WEXITSTATUS(status));
++
++ /* Dump monitor queue */
++ kdbus_printf("\n\nMonitor queue:\n");
++ for (;;) {
++ ret = kdbus_msg_recv_poll(monitor, 100, &msg, NULL);
++ if (ret < 0)
++ break;
++
++ if (msg->payload_type == KDBUS_PAYLOAD_DBUS) {
++ /*
++ * Parent pidns should see all the
++ * pids
++ */
++ item = kdbus_get_item(msg, KDBUS_ITEM_PIDS);
++ ASSERT_RETURN(item);
++
++ ASSERT_RETURN(item->pids.pid != 0 &&
++ item->pids.tid != 0 &&
++ item->pids.ppid != 0);
++ }
++
++ kdbus_msg_free(msg);
++ }
++
++ kdbus_conn_free(monitor);
++ close(efd);
++
++ return 0;
++}
++
++int kdbus_test_metadata_ns(struct kdbus_test_env *env)
++{
++ int ret;
++ struct kdbus_conn *holder, *conn;
++ struct kdbus_policy_access policy_access = {
++ /* Allow world so we can inspect metadata in namespace */
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = geteuid(),
++ .access = KDBUS_POLICY_TALK,
++ };
++
++ /*
++ * We require user-namespaces and all uids/gids
++ * should be mapped (we can just require the necessary ones)
++ */
++ if (!config_user_ns_is_enabled() ||
++ !all_uids_gids_are_mapped())
++ return TEST_SKIP;
++
++ ret = test_is_capable(CAP_SETUID, CAP_SETGID, CAP_SYS_ADMIN, -1);
++ ASSERT_RETURN(ret >= 0);
++
++ /* no enough privileges, SKIP test */
++ if (!ret)
++ return TEST_SKIP;
++
++ holder = kdbus_hello_registrar(env->buspath, "com.example.metadata",
++ &policy_access, 1,
++ KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(holder);
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ ret = kdbus_add_match_empty(conn);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_acquire(conn, "com.example.metadata", NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ ret = kdbus_clone_userns_test(env->buspath, conn);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(holder);
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-monitor.c b/tools/testing/selftests/kdbus/test-monitor.c
+new file mode 100644
+index 0000000..e00d738
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-monitor.c
+@@ -0,0 +1,176 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <stdbool.h>
++#include <errno.h>
++#include <assert.h>
++#include <signal.h>
++#include <sys/time.h>
++#include <sys/mman.h>
++#include <sys/capability.h>
++#include <sys/wait.h>
++
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++int kdbus_test_monitor(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *monitor, *conn;
++ unsigned int cookie = 0xdeadbeef;
++ struct kdbus_msg *msg;
++ uint64_t offset = 0;
++ int ret;
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ /* add matches to make sure the monitor do not trigger an item add or
++ * remove on connect and disconnect, respectively.
++ */
++ ret = kdbus_add_match_id(conn, 0x1, KDBUS_ITEM_ID_ADD,
++ KDBUS_MATCH_ID_ANY);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_add_match_id(conn, 0x2, KDBUS_ITEM_ID_REMOVE,
++ KDBUS_MATCH_ID_ANY);
++ ASSERT_RETURN(ret == 0);
++
++ /* register a monitor */
++ monitor = kdbus_hello(env->buspath, KDBUS_HELLO_MONITOR, NULL, 0);
++ ASSERT_RETURN(monitor);
++
++ /* make sure we did not receive a monitor connect notification */
++ ret = kdbus_msg_recv(conn, &msg, &offset);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ /* check that a monitor cannot acquire a name */
++ ret = kdbus_name_acquire(monitor, "foo.bar.baz", NULL);
++ ASSERT_RETURN(ret == -EOPNOTSUPP);
++
++ ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0, conn->id);
++ ASSERT_RETURN(ret == 0);
++
++ /* the recipient should have gotten the message */
++ ret = kdbus_msg_recv(conn, &msg, &offset);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++ kdbus_msg_free(msg);
++ kdbus_free(conn, offset);
++
++ /* and so should the monitor */
++ ret = kdbus_msg_recv(monitor, &msg, &offset);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++ kdbus_free(monitor, offset);
++
++ /* Installing matches for monitors must fais must fail */
++ ret = kdbus_add_match_empty(monitor);
++ ASSERT_RETURN(ret == -EOPNOTSUPP);
++
++ cookie++;
++ ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ /* The monitor should get the message. */
++ ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++ kdbus_free(monitor, offset);
++
++ /*
++ * Since we are the only monitor, update the attach flags
++ * and tell we are not interessted in attach flags recv
++ */
++
++ ret = kdbus_conn_update_attach_flags(monitor,
++ _KDBUS_ATTACH_ALL,
++ 0);
++ ASSERT_RETURN(ret == 0);
++
++ cookie++;
++ ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ ret = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_msg_free(msg);
++ kdbus_free(monitor, offset);
++
++ /*
++ * Now we are interested in KDBUS_ITEM_TIMESTAMP and
++ * KDBUS_ITEM_CREDS
++ */
++ ret = kdbus_conn_update_attach_flags(monitor,
++ _KDBUS_ATTACH_ALL,
++ KDBUS_ATTACH_TIMESTAMP |
++ KDBUS_ATTACH_CREDS);
++ ASSERT_RETURN(ret == 0);
++
++ cookie++;
++ ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == cookie);
++
++ ret = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
++ ASSERT_RETURN(ret == 1);
++
++ ret = kdbus_item_in_message(msg, KDBUS_ITEM_CREDS);
++ ASSERT_RETURN(ret == 1);
++
++ /* the KDBUS_ITEM_PID_COMM was not requested */
++ ret = kdbus_item_in_message(msg, KDBUS_ITEM_PID_COMM);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_msg_free(msg);
++ kdbus_free(monitor, offset);
++
++ kdbus_conn_free(monitor);
++ /* make sure we did not receive a monitor disconnect notification */
++ ret = kdbus_msg_recv(conn, &msg, &offset);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ kdbus_conn_free(conn);
++
++ /* Make sure that monitor as unprivileged is not allowed */
++ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
++ ASSERT_RETURN(ret >= 0);
++
++ if (ret && all_uids_gids_are_mapped()) {
++ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_UID, ({
++ monitor = kdbus_hello(env->buspath,
++ KDBUS_HELLO_MONITOR,
++ NULL, 0);
++ ASSERT_EXIT(!monitor && errno == EPERM);
++
++ _exit(EXIT_SUCCESS);
++ }),
++ ({ 0; }));
++ ASSERT_RETURN(ret == 0);
++ }
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-names.c b/tools/testing/selftests/kdbus/test-names.c
+new file mode 100644
+index 0000000..66ebb47
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-names.c
+@@ -0,0 +1,194 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <limits.h>
++#include <getopt.h>
++#include <stdbool.h>
++
++#include "kdbus-api.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++#include "kdbus-test.h"
++
++static int conn_is_name_owner(const struct kdbus_conn *conn,
++ const char *needle)
++{
++ struct kdbus_cmd_list cmd_list = { .size = sizeof(cmd_list) };
++ struct kdbus_info *name, *list;
++ bool found = false;
++ int ret;
++
++ cmd_list.flags = KDBUS_LIST_NAMES;
++
++ ret = kdbus_cmd_list(conn->fd, &cmd_list);
++ ASSERT_RETURN(ret == 0);
++
++ list = (struct kdbus_info *)(conn->buf + cmd_list.offset);
++ KDBUS_FOREACH(name, list, cmd_list.list_size) {
++ struct kdbus_item *item;
++ const char *n = NULL;
++
++ KDBUS_ITEM_FOREACH(item, name, items)
++ if (item->type == KDBUS_ITEM_OWNED_NAME)
++ n = item->name.name;
++
++ if (name->id == conn->id &&
++ n && strcmp(needle, n) == 0) {
++ found = true;
++ break;
++ }
++ }
++
++ ret = kdbus_free(conn, cmd_list.offset);
++ ASSERT_RETURN(ret == 0);
++
++ return found ? 0 : -1;
++}
++
++int kdbus_test_name_basic(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn;
++ char *name, *dot_name, *invalid_name, *wildcard_name;
++ int ret;
++
++ name = "foo.bla.blaz";
++ dot_name = ".bla.blaz";
++ invalid_name = "foo";
++ wildcard_name = "foo.bla.bl.*";
++
++ /* create a 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ /* acquire name "foo.bar.xxx" name */
++ ret = kdbus_name_acquire(conn, "foo.bar.xxx", NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* Name is not valid, must fail */
++ ret = kdbus_name_acquire(env->conn, dot_name, NULL);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ ret = kdbus_name_acquire(env->conn, invalid_name, NULL);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ ret = kdbus_name_acquire(env->conn, wildcard_name, NULL);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ /* check that we can acquire a name */
++ ret = kdbus_name_acquire(env->conn, name, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = conn_is_name_owner(env->conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ /* ... and release it again */
++ ret = kdbus_name_release(env->conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ ret = conn_is_name_owner(env->conn, name);
++ ASSERT_RETURN(ret != 0);
++
++ /* check that we can't release it again */
++ ret = kdbus_name_release(env->conn, name);
++ ASSERT_RETURN(ret == -ESRCH);
++
++ /* check that we can't release a name that we don't own */
++ ret = kdbus_name_release(env->conn, "foo.bar.xxx");
++ ASSERT_RETURN(ret == -EADDRINUSE);
++
++ /* Name is not valid, must fail */
++ ret = kdbus_name_release(env->conn, dot_name);
++ ASSERT_RETURN(ret == -ESRCH);
++
++ ret = kdbus_name_release(env->conn, invalid_name);
++ ASSERT_RETURN(ret == -ESRCH);
++
++ ret = kdbus_name_release(env->conn, wildcard_name);
++ ASSERT_RETURN(ret == -ESRCH);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
++
++int kdbus_test_name_conflict(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn;
++ char *name;
++ int ret;
++
++ name = "foo.bla.blaz";
++
++ /* create a 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ /* allow the new connection to own the same name */
++ /* acquire name from the 1st connection */
++ ret = kdbus_name_acquire(env->conn, name, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = conn_is_name_owner(env->conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ /* check that we can't acquire it again from the 1st connection */
++ ret = kdbus_name_acquire(env->conn, name, NULL);
++ ASSERT_RETURN(ret == -EALREADY);
++
++ /* check that we also can't acquire it again from the 2nd connection */
++ ret = kdbus_name_acquire(conn, name, NULL);
++ ASSERT_RETURN(ret == -EEXIST);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
++
++int kdbus_test_name_queue(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn;
++ const char *name;
++ uint64_t flags;
++ int ret;
++
++ name = "foo.bla.blaz";
++
++ flags = KDBUS_NAME_ALLOW_REPLACEMENT;
++
++ /* create a 2nd connection */
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn != NULL);
++
++ /* allow the new connection to own the same name */
++ /* acquire name from the 1st connection */
++ ret = kdbus_name_acquire(env->conn, name, &flags);
++ ASSERT_RETURN(ret == 0);
++
++ ret = conn_is_name_owner(env->conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ /* queue the 2nd connection as waiting owner */
++ flags = KDBUS_NAME_QUEUE;
++ ret = kdbus_name_acquire(conn, name, &flags);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(flags & KDBUS_NAME_IN_QUEUE);
++
++ /* release name from 1st connection */
++ ret = kdbus_name_release(env->conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ /* now the name should be owned by the 2nd connection */
++ ret = conn_is_name_owner(conn, name);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(conn);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-policy-ns.c b/tools/testing/selftests/kdbus/test-policy-ns.c
+new file mode 100644
+index 0000000..3437012
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-policy-ns.c
+@@ -0,0 +1,632 @@
++/*
++ * Test metadata and policies in new namespaces. Even if our tests
++ * can run in a namespaced setup, this test is necessary so we can
++ * inspect policies on the same kdbusfs but between multiple
++ * namespaces.
++ *
++ * Copyright (C) 2014-2015 Djalal Harouni
++ *
++ * kdbus is free software; you can redistribute it and/or modify it under
++ * the terms of the GNU Lesser General Public License as published by the
++ * Free Software Foundation; either version 2.1 of the License, or (at
++ * your option) any later version.
++ */
++
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <pthread.h>
++#include <sched.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <stdint.h>
++#include <stdbool.h>
++#include <unistd.h>
++#include <errno.h>
++#include <signal.h>
++#include <sys/wait.h>
++#include <sys/prctl.h>
++#include <sys/eventfd.h>
++#include <sys/syscall.h>
++#include <sys/capability.h>
++#include <linux/sched.h>
++
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++#define MAX_CONN 64
++#define POLICY_NAME "foo.test.policy-test"
++
++#define KDBUS_CONN_MAX_MSGS_PER_USER 16
++
++/**
++ * Note: this test can be used to inspect policy_db->talk_access_hash
++ *
++ * The purpose of these tests:
++ * 1) Check KDBUS_POLICY_TALK
++ * 2) Check the cache state: kdbus_policy_db->talk_access_hash
++ * Should be extended
++ */
++
++/**
++ * Check a list of connections against conn_db[0]
++ * conn_db[0] will own the name "foo.test.policy-test" and the
++ * policy holder connection for this name will update the policy
++ * entries, so different use cases can be tested.
++ */
++static struct kdbus_conn **conn_db;
++
++static void *kdbus_recv_echo(void *ptr)
++{
++ int ret;
++ struct kdbus_conn *conn = ptr;
++
++ ret = kdbus_msg_recv_poll(conn, 200, NULL, NULL);
++
++ return (void *)(long)ret;
++}
++
++/* Trigger kdbus_policy_set() */
++static int kdbus_set_policy_talk(struct kdbus_conn *conn,
++ const char *name,
++ uid_t id, unsigned int type)
++{
++ int ret;
++ struct kdbus_policy_access access = {
++ .type = type,
++ .id = id,
++ .access = KDBUS_POLICY_TALK,
++ };
++
++ ret = kdbus_conn_update_policy(conn, name, &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ return TEST_OK;
++}
++
++/* return TEST_OK or TEST_ERR on failure */
++static int kdbus_register_same_activator(char *bus, const char *name,
++ struct kdbus_conn **c)
++{
++ int ret;
++ struct kdbus_conn *activator;
++
++ activator = kdbus_hello_activator(bus, name, NULL, 0);
++ if (activator) {
++ *c = activator;
++ fprintf(stderr, "--- error was able to register name twice '%s'.\n",
++ name);
++ return TEST_ERR;
++ }
++
++ ret = -errno;
++ /* -EEXIST means test succeeded */
++ if (ret == -EEXIST)
++ return TEST_OK;
++
++ return TEST_ERR;
++}
++
++/* return TEST_OK or TEST_ERR on failure */
++static int kdbus_register_policy_holder(char *bus, const char *name,
++ struct kdbus_conn **conn)
++{
++ struct kdbus_conn *c;
++ struct kdbus_policy_access access[2];
++
++ access[0].type = KDBUS_POLICY_ACCESS_USER;
++ access[0].access = KDBUS_POLICY_OWN;
++ access[0].id = geteuid();
++
++ access[1].type = KDBUS_POLICY_ACCESS_WORLD;
++ access[1].access = KDBUS_POLICY_TALK;
++ access[1].id = geteuid();
++
++ c = kdbus_hello_registrar(bus, name, access, 2,
++ KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(c);
++
++ *conn = c;
++
++ return TEST_OK;
++}
++
++/**
++ * Create new threads for receiving from multiple senders,
++ * The 'conn_db' will be populated by newly created connections.
++ * Caller should free all allocated connections.
++ *
++ * return 0 on success, negative errno on failure.
++ */
++static int kdbus_recv_in_threads(const char *bus, const char *name,
++ struct kdbus_conn **conn_db)
++{
++ int ret;
++ bool pool_full = false;
++ unsigned int sent_packets = 0;
++ unsigned int lost_packets = 0;
++ unsigned int i, tid;
++ unsigned long dst_id;
++ unsigned long cookie = 1;
++ unsigned int thread_nr = MAX_CONN - 1;
++ pthread_t thread_id[MAX_CONN - 1] = {'\0'};
++
++ dst_id = name ? KDBUS_DST_ID_NAME : conn_db[0]->id;
++
++ for (tid = 0, i = 1; tid < thread_nr; tid++, i++) {
++ ret = pthread_create(&thread_id[tid], NULL,
++ kdbus_recv_echo, (void *)conn_db[0]);
++ if (ret < 0) {
++ ret = -errno;
++ kdbus_printf("error pthread_create: %d (%m)\n",
++ ret);
++ break;
++ }
++
++ /* just free before re-using */
++ kdbus_conn_free(conn_db[i]);
++ conn_db[i] = NULL;
++
++ /* We need to create connections here */
++ conn_db[i] = kdbus_hello(bus, 0, NULL, 0);
++ if (!conn_db[i]) {
++ ret = -errno;
++ break;
++ }
++
++ ret = kdbus_add_match_empty(conn_db[i]);
++ if (ret < 0)
++ break;
++
++ ret = kdbus_msg_send(conn_db[i], name, cookie++,
++ 0, 0, 0, dst_id);
++ if (ret < 0) {
++ /*
++ * Receivers are not reading their messages,
++ * not scheduled ?!
++ *
++ * So set the pool full here, perhaps the
++ * connection pool or queue was full, later
++ * recheck receivers errors
++ */
++ if (ret == -ENOBUFS || ret == -EXFULL)
++ pool_full = true;
++ break;
++ }
++
++ sent_packets++;
++ }
++
++ for (tid = 0; tid < thread_nr; tid++) {
++ int thread_ret = 0;
++
++ if (thread_id[tid]) {
++ pthread_join(thread_id[tid], (void *)&thread_ret);
++ if (thread_ret < 0) {
++ /* Update only if send did not fail */
++ if (ret == 0)
++ ret = thread_ret;
++
++ lost_packets++;
++ }
++ }
++ }
++
++ /*
++ * When sending if we did fail with -ENOBUFS or -EXFULL
++ * then we should have set lost_packet and we should at
++ * least have sent_packets set to KDBUS_CONN_MAX_MSGS_PER_USER
++ */
++ if (pool_full) {
++ ASSERT_RETURN(lost_packets > 0);
++
++ /*
++ * We should at least send KDBUS_CONN_MAX_MSGS_PER_USER
++ *
++ * For every send operation we create a thread to
++ * recv the packet, so we keep the queue clean
++ */
++ ASSERT_RETURN(sent_packets >= KDBUS_CONN_MAX_MSGS_PER_USER);
++
++ /*
++ * Set ret to zero since we only failed due to
++ * the receiving threads that have not been
++ * scheduled
++ */
++ ret = 0;
++ }
++
++ return ret;
++}
++
++/* Return: TEST_OK or TEST_ERR on failure */
++static int kdbus_normal_test(const char *bus, const char *name,
++ struct kdbus_conn **conn_db)
++{
++ int ret;
++
++ ret = kdbus_recv_in_threads(bus, name, conn_db);
++ ASSERT_RETURN(ret >= 0);
++
++ return TEST_OK;
++}
++
++static int kdbus_fork_test_by_id(const char *bus,
++ struct kdbus_conn **conn_db,
++ int parent_status, int child_status)
++{
++ int ret;
++ pid_t pid;
++ uint64_t cookie = 0x9876ecba;
++ struct kdbus_msg *msg = NULL;
++ uint64_t offset = 0;
++ int status = 0;
++
++ /*
++ * If the child_status is not EXIT_SUCCESS, then we expect
++ * that sending from the child will fail, thus receiving
++ * from parent must error with -ETIMEDOUT, and vice versa.
++ */
++ bool parent_timedout = !!child_status;
++ bool child_timedout = !!parent_status;
++
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, pid);
++
++ if (pid == 0) {
++ struct kdbus_conn *conn_src;
++
++ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
++ ASSERT_EXIT(ret == 0);
++
++ ret = drop_privileges(65534, 65534);
++ ASSERT_EXIT(ret == 0);
++
++ conn_src = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_EXIT(conn_src);
++
++ ret = kdbus_add_match_empty(conn_src);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * child_status is always checked against send
++ * operations, in case it fails always return
++ * EXIT_FAILURE.
++ */
++ ret = kdbus_msg_send(conn_src, NULL, cookie,
++ 0, 0, 0, conn_db[0]->id);
++ ASSERT_EXIT(ret == child_status);
++
++ ret = kdbus_msg_recv_poll(conn_src, 100, NULL, NULL);
++
++ kdbus_conn_free(conn_src);
++
++ /*
++ * Child kdbus_msg_recv_poll() should timeout since
++ * the parent_status was set to a non EXIT_SUCCESS
++ * value.
++ */
++ if (child_timedout)
++ _exit(ret == -ETIMEDOUT ? EXIT_SUCCESS : EXIT_FAILURE);
++
++ _exit(ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
++ }
++
++ ret = kdbus_msg_recv_poll(conn_db[0], 100, &msg, &offset);
++ /*
++ * If parent_timedout is set then this should fail with
++ * -ETIMEDOUT since the child_status was set to a non
++ * EXIT_SUCCESS value. Otherwise, assume
++ * that kdbus_msg_recv_poll() has succeeded.
++ */
++ if (parent_timedout) {
++ ASSERT_RETURN_VAL(ret == -ETIMEDOUT, TEST_ERR);
++
++ /* timedout no need to continue, we don't have the
++ * child connection ID, so just terminate. */
++ goto out;
++ } else {
++ ASSERT_RETURN_VAL(ret == 0, ret);
++ }
++
++ ret = kdbus_msg_send(conn_db[0], NULL, ++cookie,
++ 0, 0, 0, msg->src_id);
++ /*
++ * parent_status is checked against send operations,
++ * on failures always return TEST_ERR.
++ */
++ ASSERT_RETURN_VAL(ret == parent_status, TEST_ERR);
++
++ kdbus_msg_free(msg);
++ kdbus_free(conn_db[0], offset);
++
++out:
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
++}
++
++/*
++ * Return: TEST_OK, TEST_ERR or TEST_SKIP
++ * we return TEST_OK only if the children return with the expected
++ * 'expected_status' that is specified as an argument.
++ */
++static int kdbus_fork_test(const char *bus, const char *name,
++ struct kdbus_conn **conn_db, int expected_status)
++{
++ pid_t pid;
++ int ret = 0;
++ int status = 0;
++
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, pid);
++
++ if (pid == 0) {
++ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
++ ASSERT_EXIT(ret == 0);
++
++ ret = drop_privileges(65534, 65534);
++ ASSERT_EXIT(ret == 0);
++
++ ret = kdbus_recv_in_threads(bus, name, conn_db);
++ _exit(ret == expected_status ? EXIT_SUCCESS : EXIT_FAILURE);
++ }
++
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN(ret >= 0);
++
++ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
++}
++
++/* Return EXIT_SUCCESS, EXIT_FAILURE or negative errno */
++static int __kdbus_clone_userns_test(const char *bus,
++ const char *name,
++ struct kdbus_conn **conn_db,
++ int expected_status)
++{
++ int efd;
++ pid_t pid;
++ int ret = 0;
++ unsigned int uid = 65534;
++ int status;
++
++ ret = drop_privileges(uid, uid);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ /*
++ * Since we just dropped privileges, the dumpable flag was just
++ * cleared which makes the /proc/$clone_child/uid_map to be
++ * owned by root, hence any userns uid mapping will fail with
++ * -EPERM since the mapping will be done by uid 65534.
++ *
++ * To avoid this set the dumpable flag again which makes procfs
++ * update the /proc/$clone_child/ inodes owner to 65534.
++ *
++ * Using this we will be able write to /proc/$clone_child/uid_map
++ * as uid 65534 and map the uid 65534 to 0 inside the user
++ * namespace.
++ */
++ ret = prctl(PR_SET_DUMPABLE, SUID_DUMP_USER);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ /* sync parent/child */
++ efd = eventfd(0, EFD_CLOEXEC);
++ ASSERT_RETURN_VAL(efd >= 0, efd);
++
++ pid = syscall(__NR_clone, SIGCHLD|CLONE_NEWUSER, NULL);
++ if (pid < 0) {
++ ret = -errno;
++ kdbus_printf("error clone: %d (%m)\n", ret);
++ /*
++ * Normal user not allowed to create userns,
++ * so nothing to worry about ?
++ */
++ if (ret == -EPERM) {
++ kdbus_printf("-- CLONE_NEWUSER TEST Failed for uid: %u\n"
++ "-- Make sure that your kernel do not allow "
++ "CLONE_NEWUSER for unprivileged users\n"
++ "-- Upstream Commit: "
++ "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5eaf563e\n",
++ uid);
++ ret = 0;
++ }
++
++ return ret;
++ }
++
++ if (pid == 0) {
++ struct kdbus_conn *conn_src;
++ eventfd_t event_status = 0;
++
++ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
++ ASSERT_EXIT(ret == 0);
++
++ ret = eventfd_read(efd, &event_status);
++ ASSERT_EXIT(ret >= 0 && event_status == 1);
++
++ /* ping connection from the new user namespace */
++ conn_src = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_EXIT(conn_src);
++
++ ret = kdbus_add_match_empty(conn_src);
++ ASSERT_EXIT(ret == 0);
++
++ ret = kdbus_msg_send(conn_src, name, 0xabcd1234,
++ 0, 0, 0, KDBUS_DST_ID_NAME);
++ kdbus_conn_free(conn_src);
++
++ _exit(ret == expected_status ? EXIT_SUCCESS : EXIT_FAILURE);
++ }
++
++ ret = userns_map_uid_gid(pid, "0 65534 1", "0 65534 1");
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ /* Tell child we are ready */
++ ret = eventfd_write(efd, 1);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ close(efd);
++
++ return status == EXIT_SUCCESS ? TEST_OK : TEST_ERR;
++}
++
++static int kdbus_clone_userns_test(const char *bus,
++ const char *name,
++ struct kdbus_conn **conn_db,
++ int expected_status)
++{
++ pid_t pid;
++ int ret = 0;
++ int status;
++
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, -errno);
++
++ if (pid == 0) {
++ ret = prctl(PR_SET_PDEATHSIG, SIGKILL);
++ if (ret < 0)
++ _exit(EXIT_FAILURE);
++
++ ret = __kdbus_clone_userns_test(bus, name, conn_db,
++ expected_status);
++ _exit(ret);
++ }
++
++ /*
++ * Receive in the original (root privileged) user namespace,
++ * must fail with -ETIMEDOUT.
++ */
++ ret = kdbus_msg_recv_poll(conn_db[0], 100, NULL, NULL);
++ ASSERT_RETURN_VAL(ret == -ETIMEDOUT, ret);
++
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
++}
++
++int kdbus_test_policy_ns(struct kdbus_test_env *env)
++{
++ int i;
++ int ret;
++ struct kdbus_conn *activator = NULL;
++ struct kdbus_conn *policy_holder = NULL;
++ char *bus = env->buspath;
++
++ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
++ ASSERT_RETURN(ret >= 0);
++
++ /* no enough privileges, SKIP test */
++ if (!ret)
++ return TEST_SKIP;
++
++ /* we require user-namespaces */
++ if (access("/proc/self/uid_map", F_OK) != 0)
++ return TEST_SKIP;
++
++ /* uids/gids must be mapped */
++ if (!all_uids_gids_are_mapped())
++ return TEST_SKIP;
++
++ conn_db = calloc(MAX_CONN, sizeof(struct kdbus_conn *));
++ ASSERT_RETURN(conn_db);
++
++ memset(conn_db, 0, MAX_CONN * sizeof(struct kdbus_conn *));
++
++ conn_db[0] = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_RETURN(conn_db[0]);
++
++ ret = kdbus_add_match_empty(conn_db[0]);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_fork_test_by_id(bus, conn_db, -EPERM, -EPERM);
++ ASSERT_EXIT(ret == 0);
++
++ ret = kdbus_register_policy_holder(bus, POLICY_NAME,
++ &policy_holder);
++ ASSERT_RETURN(ret == 0);
++
++ /* Try to register the same name with an activator */
++ ret = kdbus_register_same_activator(bus, POLICY_NAME,
++ &activator);
++ ASSERT_RETURN(ret == 0);
++
++ /* Acquire POLICY_NAME */
++ ret = kdbus_name_acquire(conn_db[0], POLICY_NAME, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_normal_test(bus, POLICY_NAME, conn_db);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_list(conn_db[0], KDBUS_LIST_NAMES |
++ KDBUS_LIST_UNIQUE |
++ KDBUS_LIST_ACTIVATORS |
++ KDBUS_LIST_QUEUED);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_fork_test(bus, POLICY_NAME, conn_db, EXIT_SUCCESS);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * children connections are able to talk to conn_db[0] since
++ * current POLICY_NAME TALK type is KDBUS_POLICY_ACCESS_WORLD,
++ * so expect EXIT_SUCCESS when sending from child. However,
++ * since the child's connection does not own any well-known
++ * name, The parent connection conn_db[0] should fail with
++ * -EPERM but since it is a privileged bus user the TALK is
++ * allowed.
++ */
++ ret = kdbus_fork_test_by_id(bus, conn_db,
++ EXIT_SUCCESS, EXIT_SUCCESS);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * Connections that can talk are perhaps being destroyed now.
++ * Restrict the policy and purge cache entries where the
++ * conn_db[0] is the destination.
++ *
++ * Now only connections with uid == 0 are allowed to talk.
++ */
++ ret = kdbus_set_policy_talk(policy_holder, POLICY_NAME,
++ geteuid(), KDBUS_POLICY_ACCESS_USER);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Testing connections (FORK+DROP) again:
++ * After setting the policy re-check connections
++ * we expect the children to fail with -EPERM
++ */
++ ret = kdbus_fork_test(bus, POLICY_NAME, conn_db, -EPERM);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Now expect that both parent and child to fail.
++ *
++ * Child should fail with -EPERM since we just restricted
++ * the POLICY_NAME TALK to uid 0 and its uid is 65534.
++ *
++ * Since the parent's connection will timeout when receiving
++ * from the child, we never continue. FWIW just put -EPERM.
++ */
++ ret = kdbus_fork_test_by_id(bus, conn_db, -EPERM, -EPERM);
++ ASSERT_EXIT(ret == 0);
++
++ /* Check if the name can be reached in a new userns */
++ ret = kdbus_clone_userns_test(bus, POLICY_NAME, conn_db, -EPERM);
++ ASSERT_RETURN(ret == 0);
++
++ for (i = 0; i < MAX_CONN; i++)
++ kdbus_conn_free(conn_db[i]);
++
++ kdbus_conn_free(activator);
++ kdbus_conn_free(policy_holder);
++
++ free(conn_db);
++
++ return ret;
++}
+diff --git a/tools/testing/selftests/kdbus/test-policy-priv.c b/tools/testing/selftests/kdbus/test-policy-priv.c
+new file mode 100644
+index 0000000..a318ccc
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-policy-priv.c
+@@ -0,0 +1,1269 @@
++#include <errno.h>
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stdint.h>
++#include <stdbool.h>
++#include <unistd.h>
++#include <time.h>
++#include <sys/capability.h>
++#include <sys/eventfd.h>
++#include <sys/wait.h>
++
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++static int test_policy_priv_by_id(const char *bus,
++ struct kdbus_conn *conn_dst,
++ bool drop_second_user,
++ int parent_status,
++ int child_status)
++{
++ int ret = 0;
++ uint64_t expected_cookie = time(NULL) ^ 0xdeadbeef;
++
++ ASSERT_RETURN(conn_dst);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, bus, ({
++ ret = kdbus_msg_send(unpriv, NULL,
++ expected_cookie, 0, 0, 0,
++ conn_dst->id);
++ ASSERT_EXIT(ret == child_status);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(conn_dst, 300, NULL, NULL);
++ ASSERT_RETURN(ret == parent_status);
++
++ return 0;
++}
++
++static int test_policy_priv_by_broadcast(const char *bus,
++ struct kdbus_conn *conn_dst,
++ int drop_second_user,
++ int parent_status,
++ int child_status)
++{
++ int efd;
++ int ret = 0;
++ eventfd_t event_status = 0;
++ struct kdbus_msg *msg = NULL;
++ uid_t second_uid = UNPRIV_UID;
++ gid_t second_gid = UNPRIV_GID;
++ struct kdbus_conn *child_2 = conn_dst;
++ uint64_t expected_cookie = time(NULL) ^ 0xdeadbeef;
++
++ /* Drop to another unprivileged user other than UNPRIV_UID */
++ if (drop_second_user == DROP_OTHER_UNPRIV) {
++ second_uid = UNPRIV_UID - 1;
++ second_gid = UNPRIV_GID - 1;
++ }
++
++ /* child will signal parent to send broadcast */
++ efd = eventfd(0, EFD_CLOEXEC);
++ ASSERT_RETURN_VAL(efd >= 0, efd);
++
++ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({
++ struct kdbus_conn *child;
++
++ child = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_EXIT(child);
++
++ ret = kdbus_add_match_empty(child);
++ ASSERT_EXIT(ret == 0);
++
++ /* signal parent */
++ ret = eventfd_write(efd, 1);
++ ASSERT_EXIT(ret == 0);
++
++ /* Use a little bit high time */
++ ret = kdbus_msg_recv_poll(child, 500, &msg, NULL);
++ ASSERT_EXIT(ret == child_status);
++
++ /*
++ * If we expect the child to get the broadcast
++ * message, then check the received cookie.
++ */
++ if (ret == 0) {
++ ASSERT_EXIT(expected_cookie == msg->cookie);
++ }
++
++ /* Use expected_cookie since 'msg' might be NULL */
++ ret = kdbus_msg_send(child, NULL, expected_cookie + 1,
++ 0, 0, 0, KDBUS_DST_ID_BROADCAST);
++ ASSERT_EXIT(ret == 0);
++
++ kdbus_msg_free(msg);
++ kdbus_conn_free(child);
++ }),
++ ({
++ if (drop_second_user == DO_NOT_DROP) {
++ ASSERT_RETURN(child_2);
++
++ ret = eventfd_read(efd, &event_status);
++ ASSERT_RETURN(ret >= 0 && event_status == 1);
++
++ ret = kdbus_msg_send(child_2, NULL,
++ expected_cookie, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ /* Use a little bit high time */
++ ret = kdbus_msg_recv_poll(child_2, 1000,
++ &msg, NULL);
++ ASSERT_RETURN(ret == parent_status);
++
++ /*
++ * Check returned cookie in case we expect
++ * success.
++ */
++ if (ret == 0) {
++ ASSERT_RETURN(msg->cookie ==
++ expected_cookie + 1);
++ }
++
++ kdbus_msg_free(msg);
++ } else {
++ /*
++ * Two unprivileged users will try to
++ * communicate using broadcast.
++ */
++ ret = RUN_UNPRIVILEGED(second_uid, second_gid, ({
++ child_2 = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_EXIT(child_2);
++
++ ret = kdbus_add_match_empty(child_2);
++ ASSERT_EXIT(ret == 0);
++
++ ret = eventfd_read(efd, &event_status);
++ ASSERT_EXIT(ret >= 0 && event_status == 1);
++
++ ret = kdbus_msg_send(child_2, NULL,
++ expected_cookie, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_EXIT(ret == 0);
++
++ /* Use a little bit high time */
++ ret = kdbus_msg_recv_poll(child_2, 1000,
++ &msg, NULL);
++ ASSERT_EXIT(ret == parent_status);
++
++ /*
++ * Check returned cookie in case we expect
++ * success.
++ */
++ if (ret == 0) {
++ ASSERT_EXIT(msg->cookie ==
++ expected_cookie + 1);
++ }
++
++ kdbus_msg_free(msg);
++ kdbus_conn_free(child_2);
++ }),
++ ({ 0; }));
++ ASSERT_RETURN(ret == 0);
++ }
++ }));
++ ASSERT_RETURN(ret == 0);
++
++ close(efd);
++
++ return ret;
++}
++
++static void nosig(int sig)
++{
++}
++
++static int test_priv_before_policy_upload(struct kdbus_test_env *env)
++{
++ int ret = 0;
++ struct kdbus_conn *conn;
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ /*
++ * Make sure unprivileged bus user cannot acquire names
++ * before registring any policy holder.
++ */
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret < 0);
++ }));
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Make sure unprivileged bus users cannot talk by default
++ * to privileged ones, unless a policy holder that allows
++ * this was uploaded.
++ */
++
++ ret = test_policy_priv_by_id(env->buspath, conn, false,
++ -ETIMEDOUT, -EPERM);
++ ASSERT_RETURN(ret == 0);
++
++ /* Activate matching for a privileged connection */
++ ret = kdbus_add_match_empty(conn);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * First make sure that BROADCAST with msg flag
++ * KDBUS_MSG_EXPECT_REPLY will fail with -ENOTUNIQ
++ */
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_msg_send(unpriv, NULL, 0xdeadbeef,
++ KDBUS_MSG_EXPECT_REPLY,
++ 5000000000ULL, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_EXIT(ret == -ENOTUNIQ);
++ }));
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Test broadcast with a privileged connection.
++ *
++ * The first unprivileged receiver should not get the
++ * broadcast message sent by the privileged connection,
++ * since there is no a TALK policy that allows the
++ * unprivileged to TALK to the privileged connection. It
++ * will fail with -ETIMEDOUT
++ *
++ * Then second case:
++ * The privileged connection should get the broadcast
++ * message from the unprivileged one. Since the receiver is
++ * a privileged bus user and it has default TALK access to
++ * all connections it will receive those.
++ */
++
++ ret = test_policy_priv_by_broadcast(env->buspath, conn,
++ DO_NOT_DROP,
++ 0, -ETIMEDOUT);
++ ASSERT_RETURN(ret == 0);
++
++
++ /*
++ * Test broadcast with two unprivileged connections running
++ * under the same user.
++ *
++ * Both connections should succeed.
++ */
++
++ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
++ DROP_SAME_UNPRIV, 0, 0);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Test broadcast with two unprivileged connections running
++ * under different users.
++ *
++ * Both connections will fail with -ETIMEDOUT.
++ */
++
++ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
++ DROP_OTHER_UNPRIV,
++ -ETIMEDOUT, -ETIMEDOUT);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(conn);
++
++ return ret;
++}
++
++static int test_broadcast_after_policy_upload(struct kdbus_test_env *env)
++{
++ int ret;
++ int efd;
++ eventfd_t event_status = 0;
++ struct kdbus_msg *msg = NULL;
++ struct kdbus_conn *owner_a, *owner_b;
++ struct kdbus_conn *holder_a, *holder_b;
++ struct kdbus_policy_access access = {};
++ uint64_t expected_cookie = time(NULL) ^ 0xdeadbeef;
++
++ owner_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(owner_a);
++
++ ret = kdbus_name_acquire(owner_a, "com.example.broadcastA", NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ /*
++ * Make sure unprivileged bus users cannot talk by default
++ * to privileged ones, unless a policy holder that allows
++ * this was uploaded.
++ */
++
++ ++expected_cookie;
++ ret = test_policy_priv_by_id(env->buspath, owner_a, false,
++ -ETIMEDOUT, -EPERM);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Make sure that privileged won't receive broadcasts unless
++ * it installs a match. It will fail with -ETIMEDOUT
++ *
++ * At same time check that the unprivileged connection will
++ * not receive the broadcast message from the privileged one
++ * since the privileged one owns a name with a restricted
++ * policy TALK (actually the TALK policy is still not
++ * registered so we fail by default), thus the unprivileged
++ * receiver is not able to TALK to that name.
++ */
++
++ ret = test_policy_priv_by_broadcast(env->buspath, owner_a,
++ DO_NOT_DROP,
++ -ETIMEDOUT, -ETIMEDOUT);
++ ASSERT_RETURN(ret == 0);
++
++ /* Activate matching for a privileged connection */
++ ret = kdbus_add_match_empty(owner_a);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Redo the previous test. The privileged conn owner_a is
++ * able to TALK to any connection so it will receive the
++ * broadcast message now.
++ */
++
++ ret = test_policy_priv_by_broadcast(env->buspath, owner_a,
++ DO_NOT_DROP,
++ 0, -ETIMEDOUT);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Test that broadcast between two unprivileged users running
++ * under the same user still succeed.
++ */
++
++ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
++ DROP_SAME_UNPRIV, 0, 0);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Test broadcast with two unprivileged connections running
++ * under different users.
++ *
++ * Both connections will fail with -ETIMEDOUT.
++ */
++
++ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
++ DROP_OTHER_UNPRIV,
++ -ETIMEDOUT, -ETIMEDOUT);
++ ASSERT_RETURN(ret == 0);
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = geteuid(),
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ holder_a = kdbus_hello_registrar(env->buspath,
++ "com.example.broadcastA",
++ &access, 1,
++ KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(holder_a);
++
++ holder_b = kdbus_hello_registrar(env->buspath,
++ "com.example.broadcastB",
++ &access, 1,
++ KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(holder_b);
++
++ /* Free connections and their received messages and restart */
++ kdbus_conn_free(owner_a);
++
++ owner_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(owner_a);
++
++ /* Activate matching for a privileged connection */
++ ret = kdbus_add_match_empty(owner_a);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_name_acquire(owner_a, "com.example.broadcastA", NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ owner_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(owner_b);
++
++ ret = kdbus_name_acquire(owner_b, "com.example.broadcastB", NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ /* Activate matching for a privileged connection */
++ ret = kdbus_add_match_empty(owner_b);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Test that even if "com.example.broadcastA" and
++ * "com.example.broadcastB" do have a TALK access by default
++ * they are able to signal each other using broadcast due to
++ * the fact they are privileged connections, they receive
++ * all broadcasts if the match allows it.
++ */
++
++ ++expected_cookie;
++ ret = kdbus_msg_send(owner_a, NULL, expected_cookie, 0,
++ 0, 0, KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv_poll(owner_b, 100, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++ ASSERT_RETURN(msg->cookie == expected_cookie);
++
++ /* Check src ID */
++ ASSERT_RETURN(msg->src_id == owner_a->id);
++
++ kdbus_msg_free(msg);
++
++ /* Release name "com.example.broadcastB" */
++
++ ret = kdbus_name_release(owner_b, "com.example.broadcastB");
++ ASSERT_EXIT(ret >= 0);
++
++ /* KDBUS_POLICY_OWN for unprivileged connections */
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = geteuid(),
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ /* Update the policy so unprivileged will own the name */
++
++ ret = kdbus_conn_update_policy(holder_b,
++ "com.example.broadcastB",
++ &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Send broadcasts from an unprivileged connection that
++ * owns a name "com.example.broadcastB".
++ *
++ * We'll have four destinations here:
++ *
++ * 1) destination owner_a: privileged connection that owns
++ * "com.example.broadcastA". It will receive the broadcast
++ * since it is a privileged has default TALK access to all
++ * connections, and it is subscribed to the match.
++ * Will succeed.
++ *
++ * owner_b: privileged connection (running under a different
++ * uid) that do not own names, but with an empty broadcast
++ * match, so it will receive broadcasts since it has default
++ * TALK access to all connection.
++ *
++ * unpriv_a: unpriv connection that do not own any name.
++ * It will receive the broadcast since it is running under
++ * the same user of the one broadcasting and did install
++ * matches. It should get the message.
++ *
++ * unpriv_b: unpriv connection is not interested in broadcast
++ * messages, so it did not install broadcast matches. Should
++ * fail with -ETIMEDOUT
++ */
++
++ ++expected_cookie;
++ efd = eventfd(0, EFD_CLOEXEC);
++ ASSERT_RETURN_VAL(efd >= 0, efd);
++
++ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_UID, ({
++ struct kdbus_conn *unpriv_owner;
++ struct kdbus_conn *unpriv_a, *unpriv_b;
++
++ unpriv_owner = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_EXIT(unpriv_owner);
++
++ unpriv_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_EXIT(unpriv_a);
++
++ unpriv_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_EXIT(unpriv_b);
++
++ ret = kdbus_name_acquire(unpriv_owner,
++ "com.example.broadcastB",
++ NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ ret = kdbus_add_match_empty(unpriv_a);
++ ASSERT_EXIT(ret == 0);
++
++ /* Signal that we are doing broadcasts */
++ ret = eventfd_write(efd, 1);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * Do broadcast from a connection that owns the
++ * names "com.example.broadcastB".
++ */
++ ret = kdbus_msg_send(unpriv_owner, NULL,
++ expected_cookie,
++ 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_EXIT(ret == 0);
++
++ /*
++ * Unprivileged connection running under the same
++ * user. It should succeed.
++ */
++ ret = kdbus_msg_recv_poll(unpriv_a, 300, &msg, NULL);
++ ASSERT_EXIT(ret == 0 && msg->cookie == expected_cookie);
++
++ /*
++ * Did not install matches, not interested in
++ * broadcasts
++ */
++ ret = kdbus_msg_recv_poll(unpriv_b, 300, NULL, NULL);
++ ASSERT_EXIT(ret == -ETIMEDOUT);
++ }),
++ ({
++ ret = eventfd_read(efd, &event_status);
++ ASSERT_RETURN(ret >= 0 && event_status == 1);
++
++ /*
++ * owner_a must fail with -ETIMEDOUT, since it owns
++ * name "com.example.broadcastA" and its TALK
++ * access is restriced.
++ */
++ ret = kdbus_msg_recv_poll(owner_a, 300, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* confirm the received cookie */
++ ASSERT_RETURN(msg->cookie == expected_cookie);
++
++ kdbus_msg_free(msg);
++
++ /*
++ * owner_b got the broadcast from an unprivileged
++ * connection.
++ */
++ ret = kdbus_msg_recv_poll(owner_b, 300, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* confirm the received cookie */
++ ASSERT_RETURN(msg->cookie == expected_cookie);
++
++ kdbus_msg_free(msg);
++
++ }));
++ ASSERT_RETURN(ret == 0);
++
++ close(efd);
++
++ /*
++ * Test broadcast with two unprivileged connections running
++ * under different users.
++ *
++ * Both connections will fail with -ETIMEDOUT.
++ */
++
++ ret = test_policy_priv_by_broadcast(env->buspath, NULL,
++ DROP_OTHER_UNPRIV,
++ -ETIMEDOUT, -ETIMEDOUT);
++ ASSERT_RETURN(ret == 0);
++
++ /* Drop received broadcasts by privileged */
++ ret = kdbus_msg_recv_poll(owner_a, 100, NULL, NULL);
++ ret = kdbus_msg_recv_poll(owner_a, 100, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(owner_a, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ ret = kdbus_msg_recv_poll(owner_b, 100, NULL, NULL);
++ ret = kdbus_msg_recv_poll(owner_b, 100, NULL, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_recv(owner_b, NULL, NULL);
++ ASSERT_RETURN(ret == -EAGAIN);
++
++ /*
++ * Perform last tests, allow others to talk to name
++ * "com.example.broadcastA". So now receiving broadcasts
++ * from it should succeed since the TALK policy allow it.
++ */
++
++ /* KDBUS_POLICY_OWN for unprivileged connections */
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = geteuid(),
++ .access = KDBUS_POLICY_TALK,
++ };
++
++ ret = kdbus_conn_update_policy(holder_a,
++ "com.example.broadcastA",
++ &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Unprivileged is able to TALK to "com.example.broadcastA"
++ * now so it will receive its broadcasts
++ */
++ ret = test_policy_priv_by_broadcast(env->buspath, owner_a,
++ DO_NOT_DROP, 0, 0);
++ ASSERT_RETURN(ret == 0);
++
++ ++expected_cookie;
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.broadcastB",
++ NULL);
++ ASSERT_EXIT(ret >= 0);
++ ret = kdbus_msg_send(unpriv, NULL, expected_cookie,
++ 0, 0, 0, KDBUS_DST_ID_BROADCAST);
++ ASSERT_EXIT(ret == 0);
++ }));
++ ASSERT_RETURN(ret == 0);
++
++ /* owner_a is privileged it will get the broadcast now. */
++ ret = kdbus_msg_recv_poll(owner_a, 300, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* confirm the received cookie */
++ ASSERT_RETURN(msg->cookie == expected_cookie);
++
++ kdbus_msg_free(msg);
++
++ /*
++ * owner_a released name "com.example.broadcastA". It should
++ * receive broadcasts since it is still privileged and has
++ * the right match.
++ *
++ * Unprivileged connection will own a name and will try to
++ * signal to the privileged connection.
++ */
++
++ ret = kdbus_name_release(owner_a, "com.example.broadcastA");
++ ASSERT_EXIT(ret >= 0);
++
++ ++expected_cookie;
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.broadcastB",
++ NULL);
++ ASSERT_EXIT(ret >= 0);
++ ret = kdbus_msg_send(unpriv, NULL, expected_cookie,
++ 0, 0, 0, KDBUS_DST_ID_BROADCAST);
++ ASSERT_EXIT(ret == 0);
++ }));
++ ASSERT_RETURN(ret == 0);
++
++ /* owner_a will get the broadcast now. */
++ ret = kdbus_msg_recv_poll(owner_a, 300, &msg, NULL);
++ ASSERT_RETURN(ret == 0);
++
++ /* confirm the received cookie */
++ ASSERT_RETURN(msg->cookie == expected_cookie);
++
++ kdbus_msg_free(msg);
++
++ kdbus_conn_free(owner_a);
++ kdbus_conn_free(owner_b);
++ kdbus_conn_free(holder_a);
++ kdbus_conn_free(holder_b);
++
++ return 0;
++}
++
++static int test_policy_priv(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn_a, *conn_b, *conn, *owner;
++ struct kdbus_policy_access access, *acc;
++ sigset_t sset;
++ size_t num;
++ int ret;
++
++ /*
++ * Make sure we have CAP_SETUID/SETGID so we can drop privileges
++ */
++
++ ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
++ ASSERT_RETURN(ret >= 0);
++
++ if (!ret)
++ return TEST_SKIP;
++
++ /* make sure that uids and gids are mapped */
++ if (!all_uids_gids_are_mapped())
++ return TEST_SKIP;
++
++ /*
++ * Setup:
++ * conn_a: policy holder for com.example.a
++ * conn_b: name holder of com.example.b
++ */
++
++ signal(SIGUSR1, nosig);
++ sigemptyset(&sset);
++ sigaddset(&sset, SIGUSR1);
++ sigprocmask(SIG_BLOCK, &sset, NULL);
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ /*
++ * Before registering any policy holder, make sure that the
++ * bus is secure by default. This test is necessary, it catches
++ * several cases where old D-Bus was vulnerable.
++ */
++
++ ret = test_priv_before_policy_upload(env);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Make sure unprivileged are not able to register policy
++ * holders
++ */
++
++ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({
++ struct kdbus_conn *holder;
++
++ holder = kdbus_hello_registrar(env->buspath,
++ "com.example.a", NULL, 0,
++ KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_EXIT(holder == NULL && errno == EPERM);
++ }),
++ ({ 0; }));
++ ASSERT_RETURN(ret == 0);
++
++
++ /* Register policy holder */
++
++ conn_a = kdbus_hello_registrar(env->buspath, "com.example.a",
++ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(conn_a);
++
++ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_b);
++
++ ret = kdbus_name_acquire(conn_b, "com.example.b", NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ /*
++ * Make sure bus-owners can always acquire names.
++ */
++ ret = kdbus_name_acquire(conn, "com.example.a", NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ kdbus_conn_free(conn);
++
++ /*
++ * Make sure unprivileged users cannot acquire names with default
++ * policy assigned.
++ */
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret < 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure unprivileged users can acquire names if we make them
++ * world-accessible.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = 0,
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ /*
++ * Make sure unprivileged/normal connections are not able
++ * to update policies
++ */
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_conn_update_policy(unpriv, "com.example.a",
++ &access, 1);
++ ASSERT_EXIT(ret == -EOPNOTSUPP);
++ }));
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret >= 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure unprivileged users can acquire names if we make them
++ * gid-accessible. But only if the gid matches.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_GROUP,
++ .id = UNPRIV_GID,
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret >= 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_GROUP,
++ .id = 1,
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret < 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure unprivileged users can acquire names if we make them
++ * uid-accessible. But only if the uid matches.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = UNPRIV_UID,
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret >= 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 1,
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret < 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure unprivileged users cannot acquire names if no owner-policy
++ * matches, even if SEE/TALK policies match.
++ */
++
++ num = 4;
++ acc = (struct kdbus_policy_access[]){
++ {
++ .type = KDBUS_POLICY_ACCESS_GROUP,
++ .id = UNPRIV_GID,
++ .access = KDBUS_POLICY_SEE,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = UNPRIV_UID,
++ .access = KDBUS_POLICY_TALK,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = 0,
++ .access = KDBUS_POLICY_TALK,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = 0,
++ .access = KDBUS_POLICY_SEE,
++ },
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", acc, num);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret < 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure unprivileged users can acquire names if the only matching
++ * policy is somewhere in the middle.
++ */
++
++ num = 5;
++ acc = (struct kdbus_policy_access[]){
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 1,
++ .access = KDBUS_POLICY_OWN,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 2,
++ .access = KDBUS_POLICY_OWN,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = UNPRIV_UID,
++ .access = KDBUS_POLICY_OWN,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 3,
++ .access = KDBUS_POLICY_OWN,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 4,
++ .access = KDBUS_POLICY_OWN,
++ },
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", acc, num);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_name_acquire(unpriv, "com.example.a", NULL);
++ ASSERT_EXIT(ret >= 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Clear policies
++ */
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", NULL, 0);
++ ASSERT_RETURN(ret == 0);
++
++ /*
++ * Make sure privileged bus users can _always_ talk to others.
++ */
++
++ conn = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn);
++
++ ret = kdbus_msg_send(conn, "com.example.b", 0xdeadbeef, 0, 0, 0, 0);
++ ASSERT_EXIT(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(conn_b, 300, NULL, NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ kdbus_conn_free(conn);
++
++ /*
++ * Make sure unprivileged bus users cannot talk by default.
++ */
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret == -EPERM);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure unprivileged bus users can talk to equals, even without
++ * policy.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = UNPRIV_UID,
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.c", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ struct kdbus_conn *owner;
++
++ owner = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(owner);
++
++ ret = kdbus_name_acquire(owner, "com.example.c", NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ ret = kdbus_msg_send(unpriv, "com.example.c", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret >= 0);
++ ret = kdbus_msg_recv_poll(owner, 100, NULL, NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ kdbus_conn_free(owner);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure unprivileged bus users can talk to privileged users if a
++ * suitable UID policy is set.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = UNPRIV_UID,
++ .access = KDBUS_POLICY_TALK,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret >= 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ /*
++ * Make sure unprivileged bus users can talk to privileged users if a
++ * suitable GID policy is set.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_GROUP,
++ .id = UNPRIV_GID,
++ .access = KDBUS_POLICY_TALK,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret >= 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ /*
++ * Make sure unprivileged bus users can talk to privileged users if a
++ * suitable WORLD policy is set.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = 0,
++ .access = KDBUS_POLICY_TALK,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret >= 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ /*
++ * Make sure unprivileged bus users cannot talk to privileged users if
++ * no suitable policy is set.
++ */
++
++ num = 5;
++ acc = (struct kdbus_policy_access[]){
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 0,
++ .access = KDBUS_POLICY_OWN,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 1,
++ .access = KDBUS_POLICY_TALK,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = UNPRIV_UID,
++ .access = KDBUS_POLICY_SEE,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 3,
++ .access = KDBUS_POLICY_TALK,
++ },
++ {
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = 4,
++ .access = KDBUS_POLICY_TALK,
++ },
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.b", acc, num);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret == -EPERM);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure unprivileged bus users can talk to privileged users if a
++ * suitable OWN privilege overwrites TALK.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = 0,
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret >= 0);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ /*
++ * Make sure the TALK cache is reset correctly when policies are
++ * updated.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = 0,
++ .access = KDBUS_POLICY_TALK,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.b", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = RUN_UNPRIVILEGED_CONN(unpriv, env->buspath, ({
++ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(conn_b, 100, NULL, NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.b",
++ NULL, 0);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_msg_send(unpriv, "com.example.b", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret == -EPERM);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++ /*
++ * Make sure the TALK cache is reset correctly when policy holders
++ * disconnect.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_WORLD,
++ .id = 0,
++ .access = KDBUS_POLICY_OWN,
++ };
++
++ conn = kdbus_hello_registrar(env->buspath, "com.example.c",
++ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(conn);
++
++ ret = kdbus_conn_update_policy(conn, "com.example.c", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ owner = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(owner);
++
++ ret = kdbus_name_acquire(owner, "com.example.c", NULL);
++ ASSERT_RETURN(ret >= 0);
++
++ ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_GID, ({
++ struct kdbus_conn *unpriv;
++
++ /* wait for parent to be finished */
++ sigemptyset(&sset);
++ ret = sigsuspend(&sset);
++ ASSERT_RETURN(ret == -1 && errno == EINTR);
++
++ unpriv = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(unpriv);
++
++ ret = kdbus_msg_send(unpriv, "com.example.c", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret >= 0);
++
++ ret = kdbus_msg_recv_poll(owner, 100, NULL, NULL);
++ ASSERT_EXIT(ret >= 0);
++
++ /* free policy holder */
++ kdbus_conn_free(conn);
++
++ ret = kdbus_msg_send(unpriv, "com.example.c", 0xdeadbeef, 0, 0,
++ 0, 0);
++ ASSERT_EXIT(ret == -EPERM);
++
++ kdbus_conn_free(unpriv);
++ }), ({
++ /* make sure policy holder is only valid in child */
++ kdbus_conn_free(conn);
++ kill(pid, SIGUSR1);
++ }));
++ ASSERT_RETURN(ret >= 0);
++
++
++ /*
++ * The following tests are necessary.
++ */
++
++ ret = test_broadcast_after_policy_upload(env);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_conn_free(owner);
++
++ /*
++ * cleanup resources
++ */
++
++ kdbus_conn_free(conn_b);
++ kdbus_conn_free(conn_a);
++
++ return TEST_OK;
++}
++
++int kdbus_test_policy_priv(struct kdbus_test_env *env)
++{
++ pid_t pid;
++ int ret;
++
++ /* make sure to exit() if a child returns from fork() */
++ pid = getpid();
++ ret = test_policy_priv(env);
++ if (pid != getpid())
++ exit(1);
++
++ return ret;
++}
+diff --git a/tools/testing/selftests/kdbus/test-policy.c b/tools/testing/selftests/kdbus/test-policy.c
+new file mode 100644
+index 0000000..96d20d5
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-policy.c
+@@ -0,0 +1,80 @@
++#include <errno.h>
++#include <stdio.h>
++#include <string.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stdint.h>
++#include <stdbool.h>
++#include <unistd.h>
++
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++int kdbus_test_policy(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn_a, *conn_b;
++ struct kdbus_policy_access access;
++ int ret;
++
++ /* Invalid name */
++ conn_a = kdbus_hello_registrar(env->buspath, ".example.a",
++ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(conn_a == NULL);
++
++ conn_a = kdbus_hello_registrar(env->buspath, "example",
++ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(conn_a == NULL);
++
++ conn_a = kdbus_hello_registrar(env->buspath, "com.example.a",
++ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(conn_a);
++
++ conn_b = kdbus_hello_registrar(env->buspath, "com.example.b",
++ NULL, 0, KDBUS_HELLO_POLICY_HOLDER);
++ ASSERT_RETURN(conn_b);
++
++ /*
++ * Verify there cannot be any duplicate entries, except for specific vs.
++ * wildcard entries.
++ */
++
++ access = (struct kdbus_policy_access){
++ .type = KDBUS_POLICY_ACCESS_USER,
++ .id = geteuid(),
++ .access = KDBUS_POLICY_SEE,
++ };
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_conn_update_policy(conn_b, "com.example.a", &access, 1);
++ ASSERT_RETURN(ret == -EEXIST);
++
++ ret = kdbus_conn_update_policy(conn_b, "com.example.a.*", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.a.*", &access, 1);
++ ASSERT_RETURN(ret == -EEXIST);
++
++ ret = kdbus_conn_update_policy(conn_a, "com.example.*", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_conn_update_policy(conn_b, "com.example.a", &access, 1);
++ ASSERT_RETURN(ret == 0);
++
++ ret = kdbus_conn_update_policy(conn_b, "com.example.*", &access, 1);
++ ASSERT_RETURN(ret == -EEXIST);
++
++ /* Invalid name */
++ ret = kdbus_conn_update_policy(conn_b, ".example.*", &access, 1);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ ret = kdbus_conn_update_policy(conn_b, "example", &access, 1);
++ ASSERT_RETURN(ret == -EINVAL);
++
++ kdbus_conn_free(conn_b);
++ kdbus_conn_free(conn_a);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-sync.c b/tools/testing/selftests/kdbus/test-sync.c
+new file mode 100644
+index 0000000..e2be910
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-sync.c
+@@ -0,0 +1,369 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <pthread.h>
++#include <stdbool.h>
++#include <signal.h>
++#include <sys/wait.h>
++#include <sys/eventfd.h>
++
++#include "kdbus-api.h"
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++static struct kdbus_conn *conn_a, *conn_b;
++static unsigned int cookie = 0xdeadbeef;
++
++static void nop_handler(int sig) {}
++
++static int interrupt_sync(struct kdbus_conn *conn_src,
++ struct kdbus_conn *conn_dst)
++{
++ pid_t pid;
++ int ret, status;
++ struct kdbus_msg *msg = NULL;
++ struct sigaction sa = {
++ .sa_handler = nop_handler,
++ .sa_flags = SA_NOCLDSTOP|SA_RESTART,
++ };
++
++ cookie++;
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, pid);
++
++ if (pid == 0) {
++ ret = sigaction(SIGINT, &sa, NULL);
++ ASSERT_EXIT(ret == 0);
++
++ ret = kdbus_msg_send_sync(conn_dst, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ 100000000ULL, 0, conn_src->id, -1);
++ ASSERT_EXIT(ret == -ETIMEDOUT);
++
++ _exit(EXIT_SUCCESS);
++ }
++
++ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
++ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++
++ ret = kill(pid, SIGINT);
++ ASSERT_RETURN_VAL(ret == 0, ret);
++
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ if (WIFSIGNALED(status))
++ return TEST_ERR;
++
++ ret = kdbus_msg_recv_poll(conn_src, 100, NULL, NULL);
++ ASSERT_RETURN(ret == -ETIMEDOUT);
++
++ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
++}
++
++static int close_epipe_sync(const char *bus)
++{
++ pid_t pid;
++ int ret, status;
++ struct kdbus_conn *conn_src;
++ struct kdbus_conn *conn_dst;
++ struct kdbus_msg *msg = NULL;
++
++ conn_src = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_RETURN(conn_src);
++
++ ret = kdbus_add_match_empty(conn_src);
++ ASSERT_RETURN(ret == 0);
++
++ conn_dst = kdbus_hello(bus, 0, NULL, 0);
++ ASSERT_RETURN(conn_dst);
++
++ cookie++;
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, pid);
++
++ if (pid == 0) {
++ uint64_t dst_id;
++
++ /* close our reference */
++ dst_id = conn_dst->id;
++ kdbus_conn_free(conn_dst);
++
++ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
++ ASSERT_EXIT(ret == 0 && msg->cookie == cookie);
++ ASSERT_EXIT(msg->src_id == dst_id);
++
++ cookie++;
++ ret = kdbus_msg_send_sync(conn_src, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ 100000000ULL, 0, dst_id, -1);
++ ASSERT_EXIT(ret == -EPIPE);
++
++ _exit(EXIT_SUCCESS);
++ }
++
++ ret = kdbus_msg_send(conn_dst, NULL, cookie, 0, 0, 0,
++ KDBUS_DST_ID_BROADCAST);
++ ASSERT_RETURN(ret == 0);
++
++ cookie++;
++ ret = kdbus_msg_recv_poll(conn_dst, 100, &msg, NULL);
++ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++
++ /* destroy connection */
++ kdbus_conn_free(conn_dst);
++ kdbus_conn_free(conn_src);
++
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ if (!WIFEXITED(status))
++ return TEST_ERR;
++
++ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
++}
++
++static int cancel_fd_sync(struct kdbus_conn *conn_src,
++ struct kdbus_conn *conn_dst)
++{
++ pid_t pid;
++ int cancel_fd;
++ int ret, status;
++ uint64_t counter = 1;
++ struct kdbus_msg *msg = NULL;
++
++ cancel_fd = eventfd(0, 0);
++ ASSERT_RETURN_VAL(cancel_fd >= 0, cancel_fd);
++
++ cookie++;
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, pid);
++
++ if (pid == 0) {
++ ret = kdbus_msg_send_sync(conn_dst, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ 100000000ULL, 0, conn_src->id,
++ cancel_fd);
++ ASSERT_EXIT(ret == -ECANCELED);
++
++ _exit(EXIT_SUCCESS);
++ }
++
++ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
++ ASSERT_RETURN(ret == 0 && msg->cookie == cookie);
++
++ kdbus_msg_free(msg);
++
++ ret = write(cancel_fd, &counter, sizeof(counter));
++ ASSERT_RETURN(ret == sizeof(counter));
++
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ if (WIFSIGNALED(status))
++ return TEST_ERR;
++
++ return (status == EXIT_SUCCESS) ? TEST_OK : TEST_ERR;
++}
++
++static int no_cancel_sync(struct kdbus_conn *conn_src,
++ struct kdbus_conn *conn_dst)
++{
++ pid_t pid;
++ int cancel_fd;
++ int ret, status;
++ struct kdbus_msg *msg = NULL;
++
++ /* pass eventfd, but never signal it so it shouldn't have any effect */
++
++ cancel_fd = eventfd(0, 0);
++ ASSERT_RETURN_VAL(cancel_fd >= 0, cancel_fd);
++
++ cookie++;
++ pid = fork();
++ ASSERT_RETURN_VAL(pid >= 0, pid);
++
++ if (pid == 0) {
++ ret = kdbus_msg_send_sync(conn_dst, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ 100000000ULL, 0, conn_src->id,
++ cancel_fd);
++ ASSERT_EXIT(ret == 0);
++
++ _exit(EXIT_SUCCESS);
++ }
++
++ ret = kdbus_msg_recv_poll(conn_src, 100, &msg, NULL);
++ ASSERT_RETURN_VAL(ret == 0 && msg->cookie == cookie, -1);
++
++ kdbus_msg_free(msg);
++
++ ret = kdbus_msg_send_reply(conn_src, cookie, conn_dst->id);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ ret = waitpid(pid, &status, 0);
++ ASSERT_RETURN_VAL(ret >= 0, ret);
++
++ if (WIFSIGNALED(status))
++ return -1;
++
++ return (status == EXIT_SUCCESS) ? 0 : -1;
++}
++
++static void *run_thread_reply(void *data)
++{
++ int ret;
++ unsigned long status = TEST_OK;
++
++ ret = kdbus_msg_recv_poll(conn_a, 3000, NULL, NULL);
++ if (ret < 0)
++ goto exit_thread;
++
++ kdbus_printf("Thread received message, sending reply ...\n");
++
++ /* using an unknown cookie must fail */
++ ret = kdbus_msg_send_reply(conn_a, ~cookie, conn_b->id);
++ if (ret != -EPERM) {
++ status = TEST_ERR;
++ goto exit_thread;
++ }
++
++ ret = kdbus_msg_send_reply(conn_a, cookie, conn_b->id);
++ if (ret != 0) {
++ status = TEST_ERR;
++ goto exit_thread;
++ }
++
++exit_thread:
++ pthread_exit(NULL);
++ return (void *) status;
++}
++
++int kdbus_test_sync_reply(struct kdbus_test_env *env)
++{
++ unsigned long status;
++ pthread_t thread;
++ int ret;
++
++ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_a && conn_b);
++
++ pthread_create(&thread, NULL, run_thread_reply, NULL);
++
++ ret = kdbus_msg_send_sync(conn_b, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ 5000000000ULL, 0, conn_a->id, -1);
++
++ pthread_join(thread, (void *) &status);
++ ASSERT_RETURN(status == 0);
++ ASSERT_RETURN(ret == 0);
++
++ ret = interrupt_sync(conn_a, conn_b);
++ ASSERT_RETURN(ret == 0);
++
++ ret = close_epipe_sync(env->buspath);
++ ASSERT_RETURN(ret == 0);
++
++ ret = cancel_fd_sync(conn_a, conn_b);
++ ASSERT_RETURN(ret == 0);
++
++ ret = no_cancel_sync(conn_a, conn_b);
++ ASSERT_RETURN(ret == 0);
++
++ kdbus_printf("-- closing bus connections\n");
++
++ kdbus_conn_free(conn_a);
++ kdbus_conn_free(conn_b);
++
++ return TEST_OK;
++}
++
++#define BYEBYE_ME ((void*)0L)
++#define BYEBYE_THEM ((void*)1L)
++
++static void *run_thread_byebye(void *data)
++{
++ struct kdbus_cmd cmd_byebye = { .size = sizeof(cmd_byebye) };
++ int ret;
++
++ ret = kdbus_msg_recv_poll(conn_a, 3000, NULL, NULL);
++ if (ret == 0) {
++ kdbus_printf("Thread received message, invoking BYEBYE ...\n");
++ kdbus_msg_recv(conn_a, NULL, NULL);
++ if (data == BYEBYE_ME)
++ kdbus_cmd_byebye(conn_b->fd, &cmd_byebye);
++ else if (data == BYEBYE_THEM)
++ kdbus_cmd_byebye(conn_a->fd, &cmd_byebye);
++ }
++
++ pthread_exit(NULL);
++ return NULL;
++}
++
++int kdbus_test_sync_byebye(struct kdbus_test_env *env)
++{
++ pthread_t thread;
++ int ret;
++
++ /*
++ * This sends a synchronous message to a thread, which waits until it
++ * received the message and then invokes BYEBYE on the *ORIGINAL*
++ * connection. That is, on the same connection that synchronously waits
++ * for an reply.
++ * This should properly wake the connection up and cause ECONNRESET as
++ * the connection is disconnected now.
++ *
++ * The second time, we do the same but invoke BYEBYE on the *TARGET*
++ * connection. This should also wake up the synchronous sender as the
++ * reply cannot be sent by a disconnected target.
++ */
++
++ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_a && conn_b);
++
++ pthread_create(&thread, NULL, run_thread_byebye, BYEBYE_ME);
++
++ ret = kdbus_msg_send_sync(conn_b, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ 5000000000ULL, 0, conn_a->id, -1);
++
++ ASSERT_RETURN(ret == -ECONNRESET);
++
++ pthread_join(thread, NULL);
++
++ kdbus_conn_free(conn_a);
++ kdbus_conn_free(conn_b);
++
++ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_a && conn_b);
++
++ pthread_create(&thread, NULL, run_thread_byebye, BYEBYE_THEM);
++
++ ret = kdbus_msg_send_sync(conn_b, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ 5000000000ULL, 0, conn_a->id, -1);
++
++ ASSERT_RETURN(ret == -EPIPE);
++
++ pthread_join(thread, NULL);
++
++ kdbus_conn_free(conn_a);
++ kdbus_conn_free(conn_b);
++
++ return TEST_OK;
++}
+diff --git a/tools/testing/selftests/kdbus/test-timeout.c b/tools/testing/selftests/kdbus/test-timeout.c
+new file mode 100644
+index 0000000..cfd1930
+--- /dev/null
++++ b/tools/testing/selftests/kdbus/test-timeout.c
+@@ -0,0 +1,99 @@
++#include <stdio.h>
++#include <string.h>
++#include <time.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <stddef.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <errno.h>
++#include <assert.h>
++#include <poll.h>
++#include <stdbool.h>
++
++#include "kdbus-api.h"
++#include "kdbus-test.h"
++#include "kdbus-util.h"
++#include "kdbus-enum.h"
++
++int timeout_msg_recv(struct kdbus_conn *conn, uint64_t *expected)
++{
++ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
++ struct kdbus_msg *msg;
++ int ret;
++
++ ret = kdbus_cmd_recv(conn->fd, &recv);
++ if (ret < 0) {
++ kdbus_printf("error receiving message: %d (%m)\n", ret);
++ return ret;
++ }
++
++ msg = (struct kdbus_msg *)(conn->buf + recv.msg.offset);
++
++ ASSERT_RETURN_VAL(msg->payload_type == KDBUS_PAYLOAD_KERNEL, -EINVAL);
++ ASSERT_RETURN_VAL(msg->src_id == KDBUS_SRC_ID_KERNEL, -EINVAL);
++ ASSERT_RETURN_VAL(msg->dst_id == conn->id, -EINVAL);
++
++ *expected &= ~(1ULL << msg->cookie_reply);
++ kdbus_printf("Got message timeout for cookie %llu\n",
++ msg->cookie_reply);
++
++ ret = kdbus_free(conn, recv.msg.offset);
++ if (ret < 0)
++ return ret;
++
++ return 0;
++}
++
++int kdbus_test_timeout(struct kdbus_test_env *env)
++{
++ struct kdbus_conn *conn_a, *conn_b;
++ struct pollfd fd;
++ int ret, i, n_msgs = 4;
++ uint64_t expected = 0;
++ uint64_t cookie = 0xdeadbeef;
++
++ conn_a = kdbus_hello(env->buspath, 0, NULL, 0);
++ conn_b = kdbus_hello(env->buspath, 0, NULL, 0);
++ ASSERT_RETURN(conn_a && conn_b);
++
++ fd.fd = conn_b->fd;
++
++ /*
++ * send messages that expect a reply (within 100 msec),
++ * but never answer it.
++ */
++ for (i = 0; i < n_msgs; i++, cookie++) {
++ kdbus_printf("Sending message with cookie %llu ...\n",
++ (unsigned long long)cookie);
++ ASSERT_RETURN(kdbus_msg_send(conn_b, NULL, cookie,
++ KDBUS_MSG_EXPECT_REPLY,
++ (i + 1) * 100ULL * 1000000ULL, 0,
++ conn_a->id) == 0);
++ expected |= 1ULL << cookie;
++ }
++
++ for (;;) {
++ fd.events = POLLIN | POLLPRI | POLLHUP;
++ fd.revents = 0;
++
++ ret = poll(&fd, 1, (n_msgs + 1) * 100);
++ if (ret == 0)
++ kdbus_printf("--- timeout\n");
++ if (ret <= 0)
++ break;
++
++ if (fd.revents & POLLIN)
++ ASSERT_RETURN(!timeout_msg_recv(conn_b, &expected));
++
++ if (expected == 0)
++ break;
++ }
++
++ ASSERT_RETURN(expected == 0);
++
++ kdbus_conn_free(conn_a);
++ kdbus_conn_free(conn_b);
++
++ return TEST_OK;
++}
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-06-20 17:37 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-06-20 17:37 UTC (permalink / raw
To: gentoo-commits
commit: d02e0e858201a0d8f313e24e2a9e288186007ea4
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sat Jun 20 17:37:33 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sat Jun 20 17:37:33 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=d02e0e85
Add check to saved_root_name for supported filesystem path naming.
2900_dev-root-proc-mount-fix.patch | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/2900_dev-root-proc-mount-fix.patch b/2900_dev-root-proc-mount-fix.patch
index 6ea86e2..4cd558e 100644
--- a/2900_dev-root-proc-mount-fix.patch
+++ b/2900_dev-root-proc-mount-fix.patch
@@ -18,7 +18,7 @@
#ifdef CONFIG_BLOCK
- create_dev("/dev/root", ROOT_DEV);
- mount_block_root("/dev/root", root_mountflags);
-+ if (saved_root_name[0]) {
++ if (saved_root_name[0] == '/') {
+ create_dev(saved_root_name, ROOT_DEV);
+ mount_block_root(saved_root_name, root_mountflags);
+ } else {
^ permalink raw reply related [flat|nested] 71+ messages in thread* [gentoo-commits] proj/linux-patches:4.1 commit in: /
@ 2015-06-08 17:59 Mike Pagano
0 siblings, 0 replies; 71+ messages in thread
From: Mike Pagano @ 2015-06-08 17:59 UTC (permalink / raw
To: gentoo-commits
commit: d9e0ab9c31aaa675ae74c89e5264d14f2082e02f
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Mon Jun 8 17:59:22 2015 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Mon Jun 8 17:59:22 2015 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=d9e0ab9c
Patch to enable link security restrictions by default. Patch to disable Windows 8 compatibility for some Lenovo ThinkPads. Patch to ensure that /dev/root doesn't appear in /proc/mounts when bootint without an initramfs. Path to not not lock when UMH is waiting on current thread spawned by linuxrc. (bug #481344) fbcondecor bootsplash patch. Kernel patch that enables gcc < v4.9 optimizations for additional CPUs. Fix for lz4 compression. Add patch to support namespace user.pax.* on tmpfs, bug #470644.
0000_README | 32 +
...ble-link-security-restrictions-by-default.patch | 22 +
2700_ThinkPad-30-brightness-control-fix.patch | 67 +
2900_dev-root-proc-mount-fix.patch | 30 +
2905_2disk-resume-image-fix.patch | 24 +
2910_lz4-compression-fix.patch | 30 +
4200_fbcondecor-3.19.patch | 2119 ++++++++++++++++++++
...able-additional-cpu-optimizations-for-gcc.patch | 327 +++
...-additional-cpu-optimizations-for-gcc-4.9.patch | 402 ++++
9 files changed, 3053 insertions(+)
diff --git a/0000_README b/0000_README
index 36c2b96..69f60dc 100644
--- a/0000_README
+++ b/0000_README
@@ -47,6 +47,38 @@ Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
+Patch: 1510_fs-enable-link-security-restrictions-by-default.patch
+From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/
+Desc: Enable link security restrictions by default.
+
+Patch: 2700_ThinkPad-30-brightness-control-fix.patch
+From: Seth Forshee <seth.forshee@canonical.com>
+Desc: ACPI: Disable Windows 8 compatibility for some Lenovo ThinkPads.
+
+Patch: 2900_dev-root-proc-mount-fix.patch
+From: https://bugs.gentoo.org/show_bug.cgi?id=438380
+Desc: Ensure that /dev/root doesn't appear in /proc/mounts when bootint without an initramfs.
+
+Patch: 2905_s2disk-resume-image-fix.patch
+From: Al Viro <viro <at> ZenIV.linux.org.uk>
+Desc: Do not lock when UMH is waiting on current thread spawned by linuxrc. (bug #481344)
+
+Patch: 2910_lz4-compression-fix.patch
+From: https://bugs.gentoo.org/show_bug.cgi?id=546422
+Desc: Fix for lz4 compression regression. Thanks to Christian Xia. See bug #546422.
+
+Patch: 4200_fbcondecor-3.19.patch
+From: http://www.mepiscommunity.org/fbcondecor
+Desc: Bootsplash ported by Marco. (Bug #539616)
+
Patch: 4567_distro-Gentoo-Kconfig.patch
From: Tom Wijsman <TomWij@gentoo.org>
Desc: Add Gentoo Linux support config settings and defaults.
+
+Patch: 5000_enable-additional-cpu-optimizations-for-gcc.patch
+From: https://github.com/graysky2/kernel_gcc_patch/
+Desc: Kernel patch enables gcc < v4.9 optimizations for additional CPUs.
+
+Patch: 5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
+From: https://github.com/graysky2/kernel_gcc_patch/
+Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs.
diff --git a/1510_fs-enable-link-security-restrictions-by-default.patch b/1510_fs-enable-link-security-restrictions-by-default.patch
new file mode 100644
index 0000000..639fb3c
--- /dev/null
+++ b/1510_fs-enable-link-security-restrictions-by-default.patch
@@ -0,0 +1,22 @@
+From: Ben Hutchings <ben@decadent.org.uk>
+Subject: fs: Enable link security restrictions by default
+Date: Fri, 02 Nov 2012 05:32:06 +0000
+Bug-Debian: https://bugs.debian.org/609455
+Forwarded: not-needed
+
+This reverts commit 561ec64ae67ef25cac8d72bb9c4bfc955edfd415
+('VFS: don't do protected {sym,hard}links by default').
+
+--- a/fs/namei.c
++++ b/fs/namei.c
+@@ -651,8 +651,8 @@ static inline void put_link(struct namei
+ path_put(link);
+ }
+
+-int sysctl_protected_symlinks __read_mostly = 0;
+-int sysctl_protected_hardlinks __read_mostly = 0;
++int sysctl_protected_symlinks __read_mostly = 1;
++int sysctl_protected_hardlinks __read_mostly = 1;
+
+ /**
+ * may_follow_link - Check symlink following for unsafe situations
diff --git a/2700_ThinkPad-30-brightness-control-fix.patch b/2700_ThinkPad-30-brightness-control-fix.patch
new file mode 100644
index 0000000..b548c6d
--- /dev/null
+++ b/2700_ThinkPad-30-brightness-control-fix.patch
@@ -0,0 +1,67 @@
+diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
+index cb96296..6c242ed 100644
+--- a/drivers/acpi/blacklist.c
++++ b/drivers/acpi/blacklist.c
+@@ -269,6 +276,61 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
+ },
+
+ /*
++ * The following Lenovo models have a broken workaround in the
++ * acpi_video backlight implementation to meet the Windows 8
++ * requirement of 101 backlight levels. Reverting to pre-Win8
++ * behavior fixes the problem.
++ */
++ {
++ .callback = dmi_disable_osi_win8,
++ .ident = "Lenovo ThinkPad L430",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L430"),
++ },
++ },
++ {
++ .callback = dmi_disable_osi_win8,
++ .ident = "Lenovo ThinkPad T430s",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T430s"),
++ },
++ },
++ {
++ .callback = dmi_disable_osi_win8,
++ .ident = "Lenovo ThinkPad T530",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T530"),
++ },
++ },
++ {
++ .callback = dmi_disable_osi_win8,
++ .ident = "Lenovo ThinkPad W530",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W530"),
++ },
++ },
++ {
++ .callback = dmi_disable_osi_win8,
++ .ident = "Lenovo ThinkPad X1 Carbon",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X1 Carbon"),
++ },
++ },
++ {
++ .callback = dmi_disable_osi_win8,
++ .ident = "Lenovo ThinkPad X230",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X230"),
++ },
++ },
++
++ /*
+ * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
+ * Linux ignores it, except for the machines enumerated below.
+ */
+
diff --git a/2900_dev-root-proc-mount-fix.patch b/2900_dev-root-proc-mount-fix.patch
new file mode 100644
index 0000000..6ea86e2
--- /dev/null
+++ b/2900_dev-root-proc-mount-fix.patch
@@ -0,0 +1,30 @@
+--- a/init/do_mounts.c 2014-08-26 08:03:30.000013100 -0400
++++ b/init/do_mounts.c 2014-08-26 08:11:19.720014712 -0400
+@@ -484,7 +484,10 @@ void __init change_floppy(char *fmt, ...
+ va_start(args, fmt);
+ vsprintf(buf, fmt, args);
+ va_end(args);
+- fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0);
++ if (saved_root_name[0])
++ fd = sys_open(saved_root_name, O_RDWR | O_NDELAY, 0);
++ else
++ fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0);
+ if (fd >= 0) {
+ sys_ioctl(fd, FDEJECT, 0);
+ sys_close(fd);
+@@ -527,8 +530,13 @@ void __init mount_root(void)
+ }
+ #endif
+ #ifdef CONFIG_BLOCK
+- create_dev("/dev/root", ROOT_DEV);
+- mount_block_root("/dev/root", root_mountflags);
++ if (saved_root_name[0]) {
++ create_dev(saved_root_name, ROOT_DEV);
++ mount_block_root(saved_root_name, root_mountflags);
++ } else {
++ create_dev("/dev/root", ROOT_DEV);
++ mount_block_root("/dev/root", root_mountflags);
++ }
+ #endif
+ }
+
diff --git a/2905_2disk-resume-image-fix.patch b/2905_2disk-resume-image-fix.patch
new file mode 100644
index 0000000..7e95d29
--- /dev/null
+++ b/2905_2disk-resume-image-fix.patch
@@ -0,0 +1,24 @@
+diff --git a/kernel/kmod.c b/kernel/kmod.c
+index fb32636..d968882 100644
+--- a/kernel/kmod.c
++++ b/kernel/kmod.c
+@@ -575,7 +575,8 @@
+ call_usermodehelper_freeinfo(sub_info);
+ return -EINVAL;
+ }
+- helper_lock();
++ if (!(current->flags & PF_FREEZER_SKIP))
++ helper_lock();
+ if (!khelper_wq || usermodehelper_disabled) {
+ retval = -EBUSY;
+ goto out;
+@@ -611,7 +612,8 @@ wait_done:
+ out:
+ call_usermodehelper_freeinfo(sub_info);
+ unlock:
+- helper_unlock();
++ if (!(current->flags & PF_FREEZER_SKIP))
++ helper_unlock();
+ return retval;
+ }
+ EXPORT_SYMBOL(call_usermodehelper_exec);
diff --git a/2910_lz4-compression-fix.patch b/2910_lz4-compression-fix.patch
new file mode 100644
index 0000000..1c55f32
--- /dev/null
+++ b/2910_lz4-compression-fix.patch
@@ -0,0 +1,30 @@
+--- a/lib/lz4/lz4_decompress.c 2015-04-13 16:20:04.896315560 +0800
++++ b/lib/lz4/lz4_decompress.c 2015-04-13 16:27:08.929317053 +0800
+@@ -139,8 +139,12 @@
+ /* Error: request to write beyond destination buffer */
+ if (cpy > oend)
+ goto _output_error;
++#if LZ4_ARCH64
++ if ((ref + COPYLENGTH) > oend)
++#else
+ if ((ref + COPYLENGTH) > oend ||
+ (op + COPYLENGTH) > oend)
++#endif
+ goto _output_error;
+ LZ4_SECURECOPY(ref, op, (oend - COPYLENGTH));
+ while (op < cpy)
+@@ -270,7 +274,13 @@
+ if (cpy > oend - COPYLENGTH) {
+ if (cpy > oend)
+ goto _output_error; /* write outside of buf */
+-
++#if LZ4_ARCH64
++ if ((ref + COPYLENGTH) > oend)
++#else
++ if ((ref + COPYLENGTH) > oend ||
++ (op + COPYLENGTH) > oend)
++#endif
++ goto _output_error;
+ LZ4_SECURECOPY(ref, op, (oend - COPYLENGTH));
+ while (op < cpy)
+ *op++ = *ref++;
diff --git a/4200_fbcondecor-3.19.patch b/4200_fbcondecor-3.19.patch
new file mode 100644
index 0000000..29c379f
--- /dev/null
+++ b/4200_fbcondecor-3.19.patch
@@ -0,0 +1,2119 @@
+diff --git a/Documentation/fb/00-INDEX b/Documentation/fb/00-INDEX
+index fe85e7c..2230930 100644
+--- a/Documentation/fb/00-INDEX
++++ b/Documentation/fb/00-INDEX
+@@ -23,6 +23,8 @@ ep93xx-fb.txt
+ - info on the driver for EP93xx LCD controller.
+ fbcon.txt
+ - intro to and usage guide for the framebuffer console (fbcon).
++fbcondecor.txt
++ - info on the Framebuffer Console Decoration
+ framebuffer.txt
+ - introduction to frame buffer devices.
+ gxfb.txt
+diff --git a/Documentation/fb/fbcondecor.txt b/Documentation/fb/fbcondecor.txt
+new file mode 100644
+index 0000000..3388c61
+--- /dev/null
++++ b/Documentation/fb/fbcondecor.txt
+@@ -0,0 +1,207 @@
++What is it?
++-----------
++
++The framebuffer decorations are a kernel feature which allows displaying a
++background picture on selected consoles.
++
++What do I need to get it to work?
++---------------------------------
++
++To get fbcondecor up-and-running you will have to:
++ 1) get a copy of splashutils [1] or a similar program
++ 2) get some fbcondecor themes
++ 3) build the kernel helper program
++ 4) build your kernel with the FB_CON_DECOR option enabled.
++
++To get fbcondecor operational right after fbcon initialization is finished, you
++will have to include a theme and the kernel helper into your initramfs image.
++Please refer to splashutils documentation for instructions on how to do that.
++
++[1] The splashutils package can be downloaded from:
++ http://github.com/alanhaggai/fbsplash
++
++The userspace helper
++--------------------
++
++The userspace fbcondecor helper (by default: /sbin/fbcondecor_helper) is called by the
++kernel whenever an important event occurs and the kernel needs some kind of
++job to be carried out. Important events include console switches and video
++mode switches (the kernel requests background images and configuration
++parameters for the current console). The fbcondecor helper must be accessible at
++all times. If it's not, fbcondecor will be switched off automatically.
++
++It's possible to set path to the fbcondecor helper by writing it to
++/proc/sys/kernel/fbcondecor.
++
++*****************************************************************************
++
++The information below is mostly technical stuff. There's probably no need to
++read it unless you plan to develop a userspace helper.
++
++The fbcondecor protocol
++-----------------------
++
++The fbcondecor protocol defines a communication interface between the kernel and
++the userspace fbcondecor helper.
++
++The kernel side is responsible for:
++
++ * rendering console text, using an image as a background (instead of a
++ standard solid color fbcon uses),
++ * accepting commands from the user via ioctls on the fbcondecor device,
++ * calling the userspace helper to set things up as soon as the fb subsystem
++ is initialized.
++
++The userspace helper is responsible for everything else, including parsing
++configuration files, decompressing the image files whenever the kernel needs
++it, and communicating with the kernel if necessary.
++
++The fbcondecor protocol specifies how communication is done in both ways:
++kernel->userspace and userspace->helper.
++
++Kernel -> Userspace
++-------------------
++
++The kernel communicates with the userspace helper by calling it and specifying
++the task to be done in a series of arguments.
++
++The arguments follow the pattern:
++<fbcondecor protocol version> <command> <parameters>
++
++All commands defined in fbcondecor protocol v2 have the following parameters:
++ virtual console
++ framebuffer number
++ theme
++
++Fbcondecor protocol v1 specified an additional 'fbcondecor mode' after the
++framebuffer number. Fbcondecor protocol v1 is deprecated and should not be used.
++
++Fbcondecor protocol v2 specifies the following commands:
++
++getpic
++------
++ The kernel issues this command to request image data. It's up to the
++ userspace helper to find a background image appropriate for the specified
++ theme and the current resolution. The userspace helper should respond by
++ issuing the FBIOCONDECOR_SETPIC ioctl.
++
++init
++----
++ The kernel issues this command after the fbcondecor device is created and
++ the fbcondecor interface is initialized. Upon receiving 'init', the userspace
++ helper should parse the kernel command line (/proc/cmdline) or otherwise
++ decide whether fbcondecor is to be activated.
++
++ To activate fbcondecor on the first console the helper should issue the
++ FBIOCONDECOR_SETCFG, FBIOCONDECOR_SETPIC and FBIOCONDECOR_SETSTATE commands,
++ in the above-mentioned order.
++
++ When the userspace helper is called in an early phase of the boot process
++ (right after the initialization of fbcon), no filesystems will be mounted.
++ The helper program should mount sysfs and then create the appropriate
++ framebuffer, fbcondecor and tty0 devices (if they don't already exist) to get
++ current display settings and to be able to communicate with the kernel side.
++ It should probably also mount the procfs to be able to parse the kernel
++ command line parameters.
++
++ Note that the console sem is not held when the kernel calls fbcondecor_helper
++ with the 'init' command. The fbcondecor helper should perform all ioctls with
++ origin set to FBCON_DECOR_IO_ORIG_USER.
++
++modechange
++----------
++ The kernel issues this command on a mode change. The helper's response should
++ be similar to the response to the 'init' command. Note that this time the
++ console sem is held and all ioctls must be performed with origin set to
++ FBCON_DECOR_IO_ORIG_KERNEL.
++
++
++Userspace -> Kernel
++-------------------
++
++Userspace programs can communicate with fbcondecor via ioctls on the
++fbcondecor device. These ioctls are to be used by both the userspace helper
++(called only by the kernel) and userspace configuration tools (run by the users).
++
++The fbcondecor helper should set the origin field to FBCON_DECOR_IO_ORIG_KERNEL
++when doing the appropriate ioctls. All userspace configuration tools should
++use FBCON_DECOR_IO_ORIG_USER. Failure to set the appropriate value in the origin
++field when performing ioctls from the kernel helper will most likely result
++in a console deadlock.
++
++FBCON_DECOR_IO_ORIG_KERNEL instructs fbcondecor not to try to acquire the console
++semaphore. Not surprisingly, FBCON_DECOR_IO_ORIG_USER instructs it to acquire
++the console sem.
++
++The framebuffer console decoration provides the following ioctls (all defined in
++linux/fb.h):
++
++FBIOCONDECOR_SETPIC
++description: loads a background picture for a virtual console
++argument: struct fbcon_decor_iowrapper*; data: struct fb_image*
++notes:
++If called for consoles other than the current foreground one, the picture data
++will be ignored.
++
++If the current virtual console is running in a 8-bpp mode, the cmap substruct
++of fb_image has to be filled appropriately: start should be set to 16 (first
++16 colors are reserved for fbcon), len to a value <= 240 and red, green and
++blue should point to valid cmap data. The transp field is ingored. The fields
++dx, dy, bg_color, fg_color in fb_image are ignored as well.
++
++FBIOCONDECOR_SETCFG
++description: sets the fbcondecor config for a virtual console
++argument: struct fbcon_decor_iowrapper*; data: struct vc_decor*
++notes: The structure has to be filled with valid data.
++
++FBIOCONDECOR_GETCFG
++description: gets the fbcondecor config for a virtual console
++argument: struct fbcon_decor_iowrapper*; data: struct vc_decor*
++
++FBIOCONDECOR_SETSTATE
++description: sets the fbcondecor state for a virtual console
++argument: struct fbcon_decor_iowrapper*; data: unsigned int*
++ values: 0 = disabled, 1 = enabled.
++
++FBIOCONDECOR_GETSTATE
++description: gets the fbcondecor state for a virtual console
++argument: struct fbcon_decor_iowrapper*; data: unsigned int*
++ values: as in FBIOCONDECOR_SETSTATE
++
++Info on used structures:
++
++Definition of struct vc_decor can be found in linux/console_decor.h. It's
++heavily commented. Note that the 'theme' field should point to a string
++no longer than FBCON_DECOR_THEME_LEN. When FBIOCONDECOR_GETCFG call is
++performed, the theme field should point to a char buffer of length
++FBCON_DECOR_THEME_LEN.
++
++Definition of struct fbcon_decor_iowrapper can be found in linux/fb.h.
++The fields in this struct have the following meaning:
++
++vc:
++Virtual console number.
++
++origin:
++Specifies if the ioctl is performed as a response to a kernel request. The
++fbcondecor helper should set this field to FBCON_DECOR_IO_ORIG_KERNEL, userspace
++programs should set it to FBCON_DECOR_IO_ORIG_USER. This field is necessary to
++avoid console semaphore deadlocks.
++
++data:
++Pointer to a data structure appropriate for the performed ioctl. Type of
++the data struct is specified in the ioctls description.
++
++*****************************************************************************
++
++Credit
++------
++
++Original 'bootsplash' project & implementation by:
++ Volker Poplawski <volker@poplawski.de>, Stefan Reinauer <stepan@suse.de>,
++ Steffen Winterfeldt <snwint@suse.de>, Michael Schroeder <mls@suse.de>,
++ Ken Wimer <wimer@suse.de>.
++
++Fbcondecor, fbcondecor protocol design, current implementation & docs by:
++ Michal Januszewski <michalj+fbcondecor@gmail.com>
++
+diff --git a/drivers/Makefile b/drivers/Makefile
+index 7183b6a..d576148 100644
+--- a/drivers/Makefile
++++ b/drivers/Makefile
+@@ -17,6 +17,10 @@ obj-y += pwm/
+ obj-$(CONFIG_PCI) += pci/
+ obj-$(CONFIG_PARISC) += parisc/
+ obj-$(CONFIG_RAPIDIO) += rapidio/
++# tty/ comes before char/ so that the VT console is the boot-time
++# default.
++obj-y += tty/
++obj-y += char/
+ obj-y += video/
+ obj-y += idle/
+
+@@ -42,11 +46,6 @@ obj-$(CONFIG_REGULATOR) += regulator/
+ # reset controllers early, since gpu drivers might rely on them to initialize
+ obj-$(CONFIG_RESET_CONTROLLER) += reset/
+
+-# tty/ comes before char/ so that the VT console is the boot-time
+-# default.
+-obj-y += tty/
+-obj-y += char/
+-
+ # iommu/ comes before gpu as gpu are using iommu controllers
+ obj-$(CONFIG_IOMMU_SUPPORT) += iommu/
+
+diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
+index fe1cd01..6d2e87a 100644
+--- a/drivers/video/console/Kconfig
++++ b/drivers/video/console/Kconfig
+@@ -126,6 +126,19 @@ config FRAMEBUFFER_CONSOLE_ROTATION
+ such that other users of the framebuffer will remain normally
+ oriented.
+
++config FB_CON_DECOR
++ bool "Support for the Framebuffer Console Decorations"
++ depends on FRAMEBUFFER_CONSOLE=y && !FB_TILEBLITTING
++ default n
++ ---help---
++ This option enables support for framebuffer console decorations which
++ makes it possible to display images in the background of the system
++ consoles. Note that userspace utilities are necessary in order to take
++ advantage of these features. Refer to Documentation/fb/fbcondecor.txt
++ for more information.
++
++ If unsure, say N.
++
+ config STI_CONSOLE
+ bool "STI text console"
+ depends on PARISC
+diff --git a/drivers/video/console/Makefile b/drivers/video/console/Makefile
+index 43bfa48..cc104b6f 100644
+--- a/drivers/video/console/Makefile
++++ b/drivers/video/console/Makefile
+@@ -16,4 +16,5 @@ obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += fbcon_rotate.o fbcon_cw.o fbcon_ud.o \
+ fbcon_ccw.o
+ endif
+
++obj-$(CONFIG_FB_CON_DECOR) += fbcondecor.o cfbcondecor.o
+ obj-$(CONFIG_FB_STI) += sticore.o
+diff --git a/drivers/video/console/bitblit.c b/drivers/video/console/bitblit.c
+index 61b182b..984384b 100644
+--- a/drivers/video/console/bitblit.c
++++ b/drivers/video/console/bitblit.c
+@@ -18,6 +18,7 @@
+ #include <linux/console.h>
+ #include <asm/types.h>
+ #include "fbcon.h"
++#include "fbcondecor.h"
+
+ /*
+ * Accelerated handlers.
+@@ -55,6 +56,13 @@ static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy,
+ area.height = height * vc->vc_font.height;
+ area.width = width * vc->vc_font.width;
+
++ if (fbcon_decor_active(info, vc)) {
++ area.sx += vc->vc_decor.tx;
++ area.sy += vc->vc_decor.ty;
++ area.dx += vc->vc_decor.tx;
++ area.dy += vc->vc_decor.ty;
++ }
++
+ info->fbops->fb_copyarea(info, &area);
+ }
+
+@@ -380,11 +388,15 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+ cursor.image.depth = 1;
+ cursor.rop = ROP_XOR;
+
+- if (info->fbops->fb_cursor)
+- err = info->fbops->fb_cursor(info, &cursor);
++ if (fbcon_decor_active(info, vc)) {
++ fbcon_decor_cursor(info, &cursor);
++ } else {
++ if (info->fbops->fb_cursor)
++ err = info->fbops->fb_cursor(info, &cursor);
+
+- if (err)
+- soft_cursor(info, &cursor);
++ if (err)
++ soft_cursor(info, &cursor);
++ }
+
+ ops->cursor_reset = 0;
+ }
+diff --git a/drivers/video/console/cfbcondecor.c b/drivers/video/console/cfbcondecor.c
+new file mode 100644
+index 0000000..a2b4497
+--- /dev/null
++++ b/drivers/video/console/cfbcondecor.c
+@@ -0,0 +1,471 @@
++/*
++ * linux/drivers/video/cfbcon_decor.c -- Framebuffer decor render functions
++ *
++ * Copyright (C) 2004 Michal Januszewski <michalj+fbcondecor@gmail.com>
++ *
++ * Code based upon "Bootdecor" (C) 2001-2003
++ * Volker Poplawski <volker@poplawski.de>,
++ * Stefan Reinauer <stepan@suse.de>,
++ * Steffen Winterfeldt <snwint@suse.de>,
++ * Michael Schroeder <mls@suse.de>,
++ * Ken Wimer <wimer@suse.de>.
++ *
++ * This file is subject to the terms and conditions of the GNU General Public
++ * License. See the file COPYING in the main directory of this archive for
++ * more details.
++ */
++#include <linux/module.h>
++#include <linux/types.h>
++#include <linux/fb.h>
++#include <linux/selection.h>
++#include <linux/slab.h>
++#include <linux/vt_kern.h>
++#include <asm/irq.h>
++
++#include "fbcon.h"
++#include "fbcondecor.h"
++
++#define parse_pixel(shift,bpp,type) \
++ do { \
++ if (d & (0x80 >> (shift))) \
++ dd2[(shift)] = fgx; \
++ else \
++ dd2[(shift)] = transparent ? *(type *)decor_src : bgx; \
++ decor_src += (bpp); \
++ } while (0) \
++
++extern int get_color(struct vc_data *vc, struct fb_info *info,
++ u16 c, int is_fg);
++
++void fbcon_decor_fix_pseudo_pal(struct fb_info *info, struct vc_data *vc)
++{
++ int i, j, k;
++ int minlen = min(min(info->var.red.length, info->var.green.length),
++ info->var.blue.length);
++ u32 col;
++
++ for (j = i = 0; i < 16; i++) {
++ k = color_table[i];
++
++ col = ((vc->vc_palette[j++] >> (8-minlen))
++ << info->var.red.offset);
++ col |= ((vc->vc_palette[j++] >> (8-minlen))
++ << info->var.green.offset);
++ col |= ((vc->vc_palette[j++] >> (8-minlen))
++ << info->var.blue.offset);
++ ((u32 *)info->pseudo_palette)[k] = col;
++ }
++}
++
++void fbcon_decor_renderc(struct fb_info *info, int ypos, int xpos, int height,
++ int width, u8* src, u32 fgx, u32 bgx, u8 transparent)
++{
++ unsigned int x, y;
++ u32 dd;
++ int bytespp = ((info->var.bits_per_pixel + 7) >> 3);
++ unsigned int d = ypos * info->fix.line_length + xpos * bytespp;
++ unsigned int ds = (ypos * info->var.xres + xpos) * bytespp;
++ u16 dd2[4];
++
++ u8* decor_src = (u8 *)(info->bgdecor.data + ds);
++ u8* dst = (u8 *)(info->screen_base + d);
++
++ if ((ypos + height) > info->var.yres || (xpos + width) > info->var.xres)
++ return;
++
++ for (y = 0; y < height; y++) {
++ switch (info->var.bits_per_pixel) {
++
++ case 32:
++ for (x = 0; x < width; x++) {
++
++ if ((x & 7) == 0)
++ d = *src++;
++ if (d & 0x80)
++ dd = fgx;
++ else
++ dd = transparent ?
++ *(u32 *)decor_src : bgx;
++
++ d <<= 1;
++ decor_src += 4;
++ fb_writel(dd, dst);
++ dst += 4;
++ }
++ break;
++ case 24:
++ for (x = 0; x < width; x++) {
++
++ if ((x & 7) == 0)
++ d = *src++;
++ if (d & 0x80)
++ dd = fgx;
++ else
++ dd = transparent ?
++ (*(u32 *)decor_src & 0xffffff) : bgx;
++
++ d <<= 1;
++ decor_src += 3;
++#ifdef __LITTLE_ENDIAN
++ fb_writew(dd & 0xffff, dst);
++ dst += 2;
++ fb_writeb((dd >> 16), dst);
++#else
++ fb_writew(dd >> 8, dst);
++ dst += 2;
++ fb_writeb(dd & 0xff, dst);
++#endif
++ dst++;
++ }
++ break;
++ case 16:
++ for (x = 0; x < width; x += 2) {
++ if ((x & 7) == 0)
++ d = *src++;
++
++ parse_pixel(0, 2, u16);
++ parse_pixel(1, 2, u16);
++#ifdef __LITTLE_ENDIAN
++ dd = dd2[0] | (dd2[1] << 16);
++#else
++ dd = dd2[1] | (dd2[0] << 16);
++#endif
++ d <<= 2;
++ fb_writel(dd, dst);
++ dst += 4;
++ }
++ break;
++
++ case 8:
++ for (x = 0; x < width; x += 4) {
++ if ((x & 7) == 0)
++ d = *src++;
++
++ parse_pixel(0, 1, u8);
++ parse_pixel(1, 1, u8);
++ parse_pixel(2, 1, u8);
++ parse_pixel(3, 1, u8);
++
++#ifdef __LITTLE_ENDIAN
++ dd = dd2[0] | (dd2[1] << 8) | (dd2[2] << 16) | (dd2[3] << 24);
++#else
++ dd = dd2[3] | (dd2[2] << 8) | (dd2[1] << 16) | (dd2[0] << 24);
++#endif
++ d <<= 4;
++ fb_writel(dd, dst);
++ dst += 4;
++ }
++ }
++
++ dst += info->fix.line_length - width * bytespp;
++ decor_src += (info->var.xres - width) * bytespp;
++ }
++}
++
++#define cc2cx(a) \
++ ((info->fix.visual == FB_VISUAL_TRUECOLOR || \
++ info->fix.visual == FB_VISUAL_DIRECTCOLOR) ? \
++ ((u32*)info->pseudo_palette)[a] : a)
++
++void fbcon_decor_putcs(struct vc_data *vc, struct fb_info *info,
++ const unsigned short *s, int count, int yy, int xx)
++{
++ unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
++ struct fbcon_ops *ops = info->fbcon_par;
++ int fg_color, bg_color, transparent;
++ u8 *src;
++ u32 bgx, fgx;
++ u16 c = scr_readw(s);
++
++ fg_color = get_color(vc, info, c, 1);
++ bg_color = get_color(vc, info, c, 0);
++
++ /* Don't paint the background image if console is blanked */
++ transparent = ops->blank_state ? 0 :
++ (vc->vc_decor.bg_color == bg_color);
++
++ xx = xx * vc->vc_font.width + vc->vc_decor.tx;
++ yy = yy * vc->vc_font.height + vc->vc_decor.ty;
++
++ fgx = cc2cx(fg_color);
++ bgx = cc2cx(bg_color);
++
++ while (count--) {
++ c = scr_readw(s++);
++ src = vc->vc_font.data + (c & charmask) * vc->vc_font.height *
++ ((vc->vc_font.width + 7) >> 3);
++
++ fbcon_decor_renderc(info, yy, xx, vc->vc_font.height,
++ vc->vc_font.width, src, fgx, bgx, transparent);
++ xx += vc->vc_font.width;
++ }
++}
++
++void fbcon_decor_cursor(struct fb_info *info, struct fb_cursor *cursor)
++{
++ int i;
++ unsigned int dsize, s_pitch;
++ struct fbcon_ops *ops = info->fbcon_par;
++ struct vc_data* vc;
++ u8 *src;
++
++ /* we really don't need any cursors while the console is blanked */
++ if (info->state != FBINFO_STATE_RUNNING || ops->blank_state)
++ return;
++
++ vc = vc_cons[ops->currcon].d;
++
++ src = kmalloc(64 + sizeof(struct fb_image), GFP_ATOMIC);
++ if (!src)
++ return;
++
++ s_pitch = (cursor->image.width + 7) >> 3;
++ dsize = s_pitch * cursor->image.height;
++ if (cursor->enable) {
++ switch (cursor->rop) {
++ case ROP_XOR:
++ for (i = 0; i < dsize; i++)
++ src[i] = cursor->image.data[i] ^ cursor->mask[i];
++ break;
++ case ROP_COPY:
++ default:
++ for (i = 0; i < dsize; i++)
++ src[i] = cursor->image.data[i] & cursor->mask[i];
++ break;
++ }
++ } else
++ memcpy(src, cursor->image.data, dsize);
++
++ fbcon_decor_renderc(info,
++ cursor->image.dy + vc->vc_decor.ty,
++ cursor->image.dx + vc->vc_decor.tx,
++ cursor->image.height,
++ cursor->image.width,
++ (u8*)src,
++ cc2cx(cursor->image.fg_color),
++ cc2cx(cursor->image.bg_color),
++ cursor->image.bg_color == vc->vc_decor.bg_color);
++
++ kfree(src);
++}
++
++static void decorset(u8 *dst, int height, int width, int dstbytes,
++ u32 bgx, int bpp)
++{
++ int i;
++
++ if (bpp == 8)
++ bgx |= bgx << 8;
++ if (bpp == 16 || bpp == 8)
++ bgx |= bgx << 16;
++
++ while (height-- > 0) {
++ u8 *p = dst;
++
++ switch (bpp) {
++
++ case 32:
++ for (i=0; i < width; i++) {
++ fb_writel(bgx, p); p += 4;
++ }
++ break;
++ case 24:
++ for (i=0; i < width; i++) {
++#ifdef __LITTLE_ENDIAN
++ fb_writew((bgx & 0xffff),(u16*)p); p += 2;
++ fb_writeb((bgx >> 16),p++);
++#else
++ fb_writew((bgx >> 8),(u16*)p); p += 2;
++ fb_writeb((bgx & 0xff),p++);
++#endif
++ }
++ case 16:
++ for (i=0; i < width/4; i++) {
++ fb_writel(bgx,p); p += 4;
++ fb_writel(bgx,p); p += 4;
++ }
++ if (width & 2) {
++ fb_writel(bgx,p); p += 4;
++ }
++ if (width & 1)
++ fb_writew(bgx,(u16*)p);
++ break;
++ case 8:
++ for (i=0; i < width/4; i++) {
++ fb_writel(bgx,p); p += 4;
++ }
++
++ if (width & 2) {
++ fb_writew(bgx,p); p += 2;
++ }
++ if (width & 1)
++ fb_writeb(bgx,(u8*)p);
++ break;
++
++ }
++ dst += dstbytes;
++ }
++}
++
++void fbcon_decor_copy(u8 *dst, u8 *src, int height, int width, int linebytes,
++ int srclinebytes, int bpp)
++{
++ int i;
++
++ while (height-- > 0) {
++ u32 *p = (u32 *)dst;
++ u32 *q = (u32 *)src;
++
++ switch (bpp) {
++
++ case 32:
++ for (i=0; i < width; i++)
++ fb_writel(*q++, p++);
++ break;
++ case 24:
++ for (i=0; i < (width*3/4); i++)
++ fb_writel(*q++, p++);
++ if ((width*3) % 4) {
++ if (width & 2) {
++ fb_writeb(*(u8*)q, (u8*)p);
++ } else if (width & 1) {
++ fb_writew(*(u16*)q, (u16*)p);
++ fb_writeb(*(u8*)((u16*)q+1),(u8*)((u16*)p+2));
++ }
++ }
++ break;
++ case 16:
++ for (i=0; i < width/4; i++) {
++ fb_writel(*q++, p++);
++ fb_writel(*q++, p++);
++ }
++ if (width & 2)
++ fb_writel(*q++, p++);
++ if (width & 1)
++ fb_writew(*(u16*)q, (u16*)p);
++ break;
++ case 8:
++ for (i=0; i < width/4; i++)
++ fb_writel(*q++, p++);
++
++ if (width & 2) {
++ fb_writew(*(u16*)q, (u16*)p);
++ q = (u32*) ((u16*)q + 1);
++ p = (u32*) ((u16*)p + 1);
++ }
++ if (width & 1)
++ fb_writeb(*(u8*)q, (u8*)p);
++ break;
++ }
++
++ dst += linebytes;
++ src += srclinebytes;
++ }
++}
++
++static void decorfill(struct fb_info *info, int sy, int sx, int height,
++ int width)
++{
++ int bytespp = ((info->var.bits_per_pixel + 7) >> 3);
++ int d = sy * info->fix.line_length + sx * bytespp;
++ int ds = (sy * info->var.xres + sx) * bytespp;
++
++ fbcon_decor_copy((u8 *)(info->screen_base + d), (u8 *)(info->bgdecor.data + ds),
++ height, width, info->fix.line_length, info->var.xres * bytespp,
++ info->var.bits_per_pixel);
++}
++
++void fbcon_decor_clear(struct vc_data *vc, struct fb_info *info, int sy, int sx,
++ int height, int width)
++{
++ int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
++ struct fbcon_ops *ops = info->fbcon_par;
++ u8 *dst;
++ int transparent, bg_color = attr_bgcol_ec(bgshift, vc, info);
++
++ transparent = (vc->vc_decor.bg_color == bg_color);
++ sy = sy * vc->vc_font.height + vc->vc_decor.ty;
++ sx = sx * vc->vc_font.width + vc->vc_decor.tx;
++ height *= vc->vc_font.height;
++ width *= vc->vc_font.width;
++
++ /* Don't paint the background image if console is blanked */
++ if (transparent && !ops->blank_state) {
++ decorfill(info, sy, sx, height, width);
++ } else {
++ dst = (u8 *)(info->screen_base + sy * info->fix.line_length +
++ sx * ((info->var.bits_per_pixel + 7) >> 3));
++ decorset(dst, height, width, info->fix.line_length, cc2cx(bg_color),
++ info->var.bits_per_pixel);
++ }
++}
++
++void fbcon_decor_clear_margins(struct vc_data *vc, struct fb_info *info,
++ int bottom_only)
++{
++ unsigned int tw = vc->vc_cols*vc->vc_font.width;
++ unsigned int th = vc->vc_rows*vc->vc_font.height;
++
++ if (!bottom_only) {
++ /* top margin */
++ decorfill(info, 0, 0, vc->vc_decor.ty, info->var.xres);
++ /* left margin */
++ decorfill(info, vc->vc_decor.ty, 0, th, vc->vc_decor.tx);
++ /* right margin */
++ decorfill(info, vc->vc_decor.ty, vc->vc_decor.tx + tw, th,
++ info->var.xres - vc->vc_decor.tx - tw);
++ }
++ decorfill(info, vc->vc_decor.ty + th, 0,
++ info->var.yres - vc->vc_decor.ty - th, info->var.xres);
++}
++
++void fbcon_decor_bmove_redraw(struct vc_data *vc, struct fb_info *info, int y,
++ int sx, int dx, int width)
++{
++ u16 *d = (u16 *) (vc->vc_origin + vc->vc_size_row * y + dx * 2);
++ u16 *s = d + (dx - sx);
++ u16 *start = d;
++ u16 *ls = d;
++ u16 *le = d + width;
++ u16 c;
++ int x = dx;
++ u16 attr = 1;
++
++ do {
++ c = scr_readw(d);
++ if (attr != (c & 0xff00)) {
++ attr = c & 0xff00;
++ if (d > start) {
++ fbcon_decor_putcs(vc, info, start, d - start, y, x);
++ x += d - start;
++ start = d;
++ }
++ }
++ if (s >= ls && s < le && c == scr_readw(s)) {
++ if (d > start) {
++ fbcon_decor_putcs(vc, info, start, d - start, y, x);
++ x += d - start + 1;
++ start = d + 1;
++ } else {
++ x++;
++ start++;
++ }
++ }
++ s++;
++ d++;
++ } while (d < le);
++ if (d > start)
++ fbcon_decor_putcs(vc, info, start, d - start, y, x);
++}
++
++void fbcon_decor_blank(struct vc_data *vc, struct fb_info *info, int blank)
++{
++ if (blank) {
++ decorset((u8 *)info->screen_base, info->var.yres, info->var.xres,
++ info->fix.line_length, 0, info->var.bits_per_pixel);
++ } else {
++ update_screen(vc);
++ fbcon_decor_clear_margins(vc, info, 0);
++ }
++}
++
+diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
+index f447734..da50d61 100644
+--- a/drivers/video/console/fbcon.c
++++ b/drivers/video/console/fbcon.c
+@@ -79,6 +79,7 @@
+ #include <asm/irq.h>
+
+ #include "fbcon.h"
++#include "../console/fbcondecor.h"
+
+ #ifdef FBCONDEBUG
+ # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
+@@ -94,7 +95,7 @@ enum {
+
+ static struct display fb_display[MAX_NR_CONSOLES];
+
+-static signed char con2fb_map[MAX_NR_CONSOLES];
++signed char con2fb_map[MAX_NR_CONSOLES];
+ static signed char con2fb_map_boot[MAX_NR_CONSOLES];
+
+ static int logo_lines;
+@@ -286,7 +287,7 @@ static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
+ !vt_force_oops_output(vc);
+ }
+
+-static int get_color(struct vc_data *vc, struct fb_info *info,
++int get_color(struct vc_data *vc, struct fb_info *info,
+ u16 c, int is_fg)
+ {
+ int depth = fb_get_color_depth(&info->var, &info->fix);
+@@ -551,6 +552,9 @@ static int do_fbcon_takeover(int show_logo)
+ info_idx = -1;
+ } else {
+ fbcon_has_console_bind = 1;
++#ifdef CONFIG_FB_CON_DECOR
++ fbcon_decor_init();
++#endif
+ }
+
+ return err;
+@@ -1007,6 +1011,12 @@ static const char *fbcon_startup(void)
+ rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
+ cols /= vc->vc_font.width;
+ rows /= vc->vc_font.height;
++
++ if (fbcon_decor_active(info, vc)) {
++ cols = vc->vc_decor.twidth / vc->vc_font.width;
++ rows = vc->vc_decor.theight / vc->vc_font.height;
++ }
++
+ vc_resize(vc, cols, rows);
+
+ DPRINTK("mode: %s\n", info->fix.id);
+@@ -1036,7 +1046,7 @@ static void fbcon_init(struct vc_data *vc, int init)
+ cap = info->flags;
+
+ if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
+- (info->fix.type == FB_TYPE_TEXT))
++ (info->fix.type == FB_TYPE_TEXT) || fbcon_decor_active(info, vc))
+ logo = 0;
+
+ if (var_to_display(p, &info->var, info))
+@@ -1260,6 +1270,11 @@ static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
+ fbcon_clear_margins(vc, 0);
+ }
+
++ if (fbcon_decor_active(info, vc)) {
++ fbcon_decor_clear(vc, info, sy, sx, height, width);
++ return;
++ }
++
+ /* Split blits that cross physical y_wrap boundary */
+
+ y_break = p->vrows - p->yscroll;
+@@ -1279,10 +1294,15 @@ static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
+ struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_ops *ops = info->fbcon_par;
+
+- if (!fbcon_is_inactive(vc, info))
+- ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
+- get_color(vc, info, scr_readw(s), 1),
+- get_color(vc, info, scr_readw(s), 0));
++ if (!fbcon_is_inactive(vc, info)) {
++
++ if (fbcon_decor_active(info, vc))
++ fbcon_decor_putcs(vc, info, s, count, ypos, xpos);
++ else
++ ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
++ get_color(vc, info, scr_readw(s), 1),
++ get_color(vc, info, scr_readw(s), 0));
++ }
+ }
+
+ static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
+@@ -1298,8 +1318,13 @@ static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
+ struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
+ struct fbcon_ops *ops = info->fbcon_par;
+
+- if (!fbcon_is_inactive(vc, info))
+- ops->clear_margins(vc, info, bottom_only);
++ if (!fbcon_is_inactive(vc, info)) {
++ if (fbcon_decor_active(info, vc)) {
++ fbcon_decor_clear_margins(vc, info, bottom_only);
++ } else {
++ ops->clear_margins(vc, info, bottom_only);
++ }
++ }
+ }
+
+ static void fbcon_cursor(struct vc_data *vc, int mode)
+@@ -1819,7 +1844,7 @@ static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
+ count = vc->vc_rows;
+ if (softback_top)
+ fbcon_softback_note(vc, t, count);
+- if (logo_shown >= 0)
++ if (logo_shown >= 0 || fbcon_decor_active(info, vc))
+ goto redraw_up;
+ switch (p->scrollmode) {
+ case SCROLL_MOVE:
+@@ -1912,6 +1937,8 @@ static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
+ count = vc->vc_rows;
+ if (logo_shown >= 0)
+ goto redraw_down;
++ if (fbcon_decor_active(info, vc))
++ goto redraw_down;
+ switch (p->scrollmode) {
+ case SCROLL_MOVE:
+ fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
+@@ -2060,6 +2087,13 @@ static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int s
+ }
+ return;
+ }
++
++ if (fbcon_decor_active(info, vc) && sy == dy && height == 1) {
++ /* must use slower redraw bmove to keep background pic intact */
++ fbcon_decor_bmove_redraw(vc, info, sy, sx, dx, width);
++ return;
++ }
++
+ ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
+ height, width);
+ }
+@@ -2130,8 +2164,8 @@ static int fbcon_resize(struct vc_data *vc, unsigned int width,
+ var.yres = virt_h * virt_fh;
+ x_diff = info->var.xres - var.xres;
+ y_diff = info->var.yres - var.yres;
+- if (x_diff < 0 || x_diff > virt_fw ||
+- y_diff < 0 || y_diff > virt_fh) {
++ if ((x_diff < 0 || x_diff > virt_fw ||
++ y_diff < 0 || y_diff > virt_fh) && !vc->vc_decor.state) {
+ const struct fb_videomode *mode;
+
+ DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
+@@ -2167,6 +2201,21 @@ static int fbcon_switch(struct vc_data *vc)
+
+ info = registered_fb[con2fb_map[vc->vc_num]];
+ ops = info->fbcon_par;
++ prev_console = ops->currcon;
++ if (prev_console != -1)
++ old_info = registered_fb[con2fb_map[prev_console]];
++
++#ifdef CONFIG_FB_CON_DECOR
++ if (!fbcon_decor_active_vc(vc) && info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
++ struct vc_data *vc_curr = vc_cons[prev_console].d;
++ if (vc_curr && fbcon_decor_active_vc(vc_curr)) {
++ /* Clear the screen to avoid displaying funky colors during
++ * palette updates. */
++ memset((u8*)info->screen_base + info->fix.line_length * info->var.yoffset,
++ 0, info->var.yres * info->fix.line_length);
++ }
++ }
++#endif
+
+ if (softback_top) {
+ if (softback_lines)
+@@ -2185,9 +2234,6 @@ static int fbcon_switch(struct vc_data *vc)
+ logo_shown = FBCON_LOGO_CANSHOW;
+ }
+
+- prev_console = ops->currcon;
+- if (prev_console != -1)
+- old_info = registered_fb[con2fb_map[prev_console]];
+ /*
+ * FIXME: If we have multiple fbdev's loaded, we need to
+ * update all info->currcon. Perhaps, we can place this
+@@ -2231,6 +2277,18 @@ static int fbcon_switch(struct vc_data *vc)
+ fbcon_del_cursor_timer(old_info);
+ }
+
++ if (fbcon_decor_active_vc(vc)) {
++ struct vc_data *vc_curr = vc_cons[prev_console].d;
++
++ if (!vc_curr->vc_decor.theme ||
++ strcmp(vc->vc_decor.theme, vc_curr->vc_decor.theme) ||
++ (fbcon_decor_active_nores(info, vc_curr) &&
++ !fbcon_decor_active(info, vc_curr))) {
++ fbcon_decor_disable(vc, 0);
++ fbcon_decor_call_helper("modechange", vc->vc_num);
++ }
++ }
++
+ if (fbcon_is_inactive(vc, info) ||
+ ops->blank_state != FB_BLANK_UNBLANK)
+ fbcon_del_cursor_timer(info);
+@@ -2339,15 +2397,20 @@ static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
+ }
+ }
+
+- if (!fbcon_is_inactive(vc, info)) {
++ if (!fbcon_is_inactive(vc, info)) {
+ if (ops->blank_state != blank) {
+ ops->blank_state = blank;
+ fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
+ ops->cursor_flash = (!blank);
+
+- if (!(info->flags & FBINFO_MISC_USEREVENT))
+- if (fb_blank(info, blank))
+- fbcon_generic_blank(vc, info, blank);
++ if (!(info->flags & FBINFO_MISC_USEREVENT)) {
++ if (fb_blank(info, blank)) {
++ if (fbcon_decor_active(info, vc))
++ fbcon_decor_blank(vc, info, blank);
++ else
++ fbcon_generic_blank(vc, info, blank);
++ }
++ }
+ }
+
+ if (!blank)
+@@ -2522,13 +2585,22 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
+ }
+
+ if (resize) {
++ /* reset wrap/pan */
+ int cols, rows;
+
+ cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
+ rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
++
++ if (fbcon_decor_active(info, vc)) {
++ info->var.xoffset = info->var.yoffset = p->yscroll = 0;
++ cols = vc->vc_decor.twidth;
++ rows = vc->vc_decor.theight;
++ }
+ cols /= w;
+ rows /= h;
++
+ vc_resize(vc, cols, rows);
++
+ if (CON_IS_VISIBLE(vc) && softback_buf)
+ fbcon_update_softback(vc);
+ } else if (CON_IS_VISIBLE(vc)
+@@ -2657,7 +2729,11 @@ static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
+ int i, j, k, depth;
+ u8 val;
+
+- if (fbcon_is_inactive(vc, info))
++ if (fbcon_is_inactive(vc, info)
++#ifdef CONFIG_FB_CON_DECOR
++ || vc->vc_num != fg_console
++#endif
++ )
+ return -EINVAL;
+
+ if (!CON_IS_VISIBLE(vc))
+@@ -2683,14 +2759,56 @@ static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
+ } else
+ fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
+
+- return fb_set_cmap(&palette_cmap, info);
++ if (fbcon_decor_active(info, vc_cons[fg_console].d) &&
++ info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
++
++ u16 *red, *green, *blue;
++ int minlen = min(min(info->var.red.length, info->var.green.length),
++ info->var.blue.length);
++ int h;
++
++ struct fb_cmap cmap = {
++ .start = 0,
++ .len = (1 << minlen),
++ .red = NULL,
++ .green = NULL,
++ .blue = NULL,
++ .transp = NULL
++ };
++
++ red = kmalloc(256 * sizeof(u16) * 3, GFP_KERNEL);
++
++ if (!red)
++ goto out;
++
++ green = red + 256;
++ blue = green + 256;
++ cmap.red = red;
++ cmap.green = green;
++ cmap.blue = blue;
++
++ for (i = 0; i < cmap.len; i++) {
++ red[i] = green[i] = blue[i] = (0xffff * i)/(cmap.len-1);
++ }
++
++ h = fb_set_cmap(&cmap, info);
++ fbcon_decor_fix_pseudo_pal(info, vc_cons[fg_console].d);
++ kfree(red);
++
++ return h;
++
++ } else if (fbcon_decor_active(info, vc_cons[fg_console].d) &&
++ info->var.bits_per_pixel == 8 && info->bgdecor.cmap.red != NULL)
++ fb_set_cmap(&info->bgdecor.cmap, info);
++
++out: return fb_set_cmap(&palette_cmap, info);
+ }
+
+ static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
+ {
+ unsigned long p;
+ int line;
+-
++
+ if (vc->vc_num != fg_console || !softback_lines)
+ return (u16 *) (vc->vc_origin + offset);
+ line = offset / vc->vc_size_row;
+@@ -2909,7 +3027,14 @@ static void fbcon_modechanged(struct fb_info *info)
+ rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
+ cols /= vc->vc_font.width;
+ rows /= vc->vc_font.height;
+- vc_resize(vc, cols, rows);
++
++ if (!fbcon_decor_active_nores(info, vc)) {
++ vc_resize(vc, cols, rows);
++ } else {
++ fbcon_decor_disable(vc, 0);
++ fbcon_decor_call_helper("modechange", vc->vc_num);
++ }
++
+ updatescrollmode(p, info, vc);
+ scrollback_max = 0;
+ scrollback_current = 0;
+@@ -2954,7 +3079,9 @@ static void fbcon_set_all_vcs(struct fb_info *info)
+ rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
+ cols /= vc->vc_font.width;
+ rows /= vc->vc_font.height;
+- vc_resize(vc, cols, rows);
++ if (!fbcon_decor_active_nores(info, vc)) {
++ vc_resize(vc, cols, rows);
++ }
+ }
+
+ if (fg != -1)
+@@ -3596,6 +3723,7 @@ static void fbcon_exit(void)
+ }
+ }
+
++ fbcon_decor_exit();
+ fbcon_has_exited = 1;
+ }
+
+diff --git a/drivers/video/console/fbcondecor.c b/drivers/video/console/fbcondecor.c
+new file mode 100644
+index 0000000..babc8c5
+--- /dev/null
++++ b/drivers/video/console/fbcondecor.c
+@@ -0,0 +1,555 @@
++/*
++ * linux/drivers/video/console/fbcondecor.c -- Framebuffer console decorations
++ *
++ * Copyright (C) 2004-2009 Michal Januszewski <michalj+fbcondecor@gmail.com>
++ *
++ * Code based upon "Bootsplash" (C) 2001-2003
++ * Volker Poplawski <volker@poplawski.de>,
++ * Stefan Reinauer <stepan@suse.de>,
++ * Steffen Winterfeldt <snwint@suse.de>,
++ * Michael Schroeder <mls@suse.de>,
++ * Ken Wimer <wimer@suse.de>.
++ *
++ * Compat ioctl support by Thorsten Klein <TK@Thorsten-Klein.de>.
++ *
++ * This file is subject to the terms and conditions of the GNU General Public
++ * License. See the file COPYING in the main directory of this archive for
++ * more details.
++ *
++ */
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/string.h>
++#include <linux/types.h>
++#include <linux/fb.h>
++#include <linux/vt_kern.h>
++#include <linux/vmalloc.h>
++#include <linux/unistd.h>
++#include <linux/syscalls.h>
++#include <linux/init.h>
++#include <linux/proc_fs.h>
++#include <linux/workqueue.h>
++#include <linux/kmod.h>
++#include <linux/miscdevice.h>
++#include <linux/device.h>
++#include <linux/fs.h>
++#include <linux/compat.h>
++#include <linux/console.h>
++
++#include <asm/uaccess.h>
++#include <asm/irq.h>
++
++#include "fbcon.h"
++#include "fbcondecor.h"
++
++extern signed char con2fb_map[];
++static int fbcon_decor_enable(struct vc_data *vc);
++char fbcon_decor_path[KMOD_PATH_LEN] = "/sbin/fbcondecor_helper";
++static int initialized = 0;
++
++int fbcon_decor_call_helper(char* cmd, unsigned short vc)
++{
++ char *envp[] = {
++ "HOME=/",
++ "PATH=/sbin:/bin",
++ NULL
++ };
++
++ char tfb[5];
++ char tcons[5];
++ unsigned char fb = (int) con2fb_map[vc];
++
++ char *argv[] = {
++ fbcon_decor_path,
++ "2",
++ cmd,
++ tcons,
++ tfb,
++ vc_cons[vc].d->vc_decor.theme,
++ NULL
++ };
++
++ snprintf(tfb,5,"%d",fb);
++ snprintf(tcons,5,"%d",vc);
++
++ return call_usermodehelper(fbcon_decor_path, argv, envp, UMH_WAIT_EXEC);
++}
++
++/* Disables fbcondecor on a virtual console; called with console sem held. */
++int fbcon_decor_disable(struct vc_data *vc, unsigned char redraw)
++{
++ struct fb_info* info;
++
++ if (!vc->vc_decor.state)
++ return -EINVAL;
++
++ info = registered_fb[(int) con2fb_map[vc->vc_num]];
++
++ if (info == NULL)
++ return -EINVAL;
++
++ vc->vc_decor.state = 0;
++ vc_resize(vc, info->var.xres / vc->vc_font.width,
++ info->var.yres / vc->vc_font.height);
++
++ if (fg_console == vc->vc_num && redraw) {
++ redraw_screen(vc, 0);
++ update_region(vc, vc->vc_origin +
++ vc->vc_size_row * vc->vc_top,
++ vc->vc_size_row * (vc->vc_bottom - vc->vc_top) / 2);
++ }
++
++ printk(KERN_INFO "fbcondecor: switched decor state to 'off' on console %d\n",
++ vc->vc_num);
++
++ return 0;
++}
++
++/* Enables fbcondecor on a virtual console; called with console sem held. */
++static int fbcon_decor_enable(struct vc_data *vc)
++{
++ struct fb_info* info;
++
++ info = registered_fb[(int) con2fb_map[vc->vc_num]];
++
++ if (vc->vc_decor.twidth == 0 || vc->vc_decor.theight == 0 ||
++ info == NULL || vc->vc_decor.state || (!info->bgdecor.data &&
++ vc->vc_num == fg_console))
++ return -EINVAL;
++
++ vc->vc_decor.state = 1;
++ vc_resize(vc, vc->vc_decor.twidth / vc->vc_font.width,
++ vc->vc_decor.theight / vc->vc_font.height);
++
++ if (fg_console == vc->vc_num) {
++ redraw_screen(vc, 0);
++ update_region(vc, vc->vc_origin +
++ vc->vc_size_row * vc->vc_top,
++ vc->vc_size_row * (vc->vc_bottom - vc->vc_top) / 2);
++ fbcon_decor_clear_margins(vc, info, 0);
++ }
++
++ printk(KERN_INFO "fbcondecor: switched decor state to 'on' on console %d\n",
++ vc->vc_num);
++
++ return 0;
++}
++
++static inline int fbcon_decor_ioctl_dosetstate(struct vc_data *vc, unsigned int state, unsigned char origin)
++{
++ int ret;
++
++// if (origin == FBCON_DECOR_IO_ORIG_USER)
++ console_lock();
++ if (!state)
++ ret = fbcon_decor_disable(vc, 1);
++ else
++ ret = fbcon_decor_enable(vc);
++// if (origin == FBCON_DECOR_IO_ORIG_USER)
++ console_unlock();
++
++ return ret;
++}
++
++static inline void fbcon_decor_ioctl_dogetstate(struct vc_data *vc, unsigned int *state)
++{
++ *state = vc->vc_decor.state;
++}
++
++static int fbcon_decor_ioctl_dosetcfg(struct vc_data *vc, struct vc_decor *cfg, unsigned char origin)
++{
++ struct fb_info *info;
++ int len;
++ char *tmp;
++
++ info = registered_fb[(int) con2fb_map[vc->vc_num]];
++
++ if (info == NULL || !cfg->twidth || !cfg->theight ||
++ cfg->tx + cfg->twidth > info->var.xres ||
++ cfg->ty + cfg->theight > info->var.yres)
++ return -EINVAL;
++
++ len = strlen_user(cfg->theme);
++ if (!len || len > FBCON_DECOR_THEME_LEN)
++ return -EINVAL;
++ tmp = kmalloc(len, GFP_KERNEL);
++ if (!tmp)
++ return -ENOMEM;
++ if (copy_from_user(tmp, (void __user *)cfg->theme, len))
++ return -EFAULT;
++ cfg->theme = tmp;
++ cfg->state = 0;
++
++ /* If this ioctl is a response to a request from kernel, the console sem
++ * is already held; we also don't need to disable decor because either the
++ * new config and background picture will be successfully loaded, and the
++ * decor will stay on, or in case of a failure it'll be turned off in fbcon. */
++// if (origin == FBCON_DECOR_IO_ORIG_USER) {
++ console_lock();
++ if (vc->vc_decor.state)
++ fbcon_decor_disable(vc, 1);
++// }
++
++ if (vc->vc_decor.theme)
++ kfree(vc->vc_decor.theme);
++
++ vc->vc_decor = *cfg;
++
++// if (origin == FBCON_DECOR_IO_ORIG_USER)
++ console_unlock();
++
++ printk(KERN_INFO "fbcondecor: console %d using theme '%s'\n",
++ vc->vc_num, vc->vc_decor.theme);
++ return 0;
++}
++
++static int fbcon_decor_ioctl_dogetcfg(struct vc_data *vc, struct vc_decor *decor)
++{
++ char __user *tmp;
++
++ tmp = decor->theme;
++ *decor = vc->vc_decor;
++ decor->theme = tmp;
++
++ if (vc->vc_decor.theme) {
++ if (copy_to_user(tmp, vc->vc_decor.theme, strlen(vc->vc_decor.theme) + 1))
++ return -EFAULT;
++ } else
++ if (put_user(0, tmp))
++ return -EFAULT;
++
++ return 0;
++}
++
++static int fbcon_decor_ioctl_dosetpic(struct vc_data *vc, struct fb_image *img, unsigned char origin)
++{
++ struct fb_info *info;
++ int len;
++ u8 *tmp;
++
++ if (vc->vc_num != fg_console)
++ return -EINVAL;
++
++ info = registered_fb[(int) con2fb_map[vc->vc_num]];
++
++ if (info == NULL)
++ return -EINVAL;
++
++ if (img->width != info->var.xres || img->height != info->var.yres) {
++ printk(KERN_ERR "fbcondecor: picture dimensions mismatch\n");
++ printk(KERN_ERR "%dx%d vs %dx%d\n", img->width, img->height, info->var.xres, info->var.yres);
++ return -EINVAL;
++ }
++
++ if (img->depth != info->var.bits_per_pixel) {
++ printk(KERN_ERR "fbcondecor: picture depth mismatch\n");
++ return -EINVAL;
++ }
++
++ if (img->depth == 8) {
++ if (!img->cmap.len || !img->cmap.red || !img->cmap.green ||
++ !img->cmap.blue)
++ return -EINVAL;
++
++ tmp = vmalloc(img->cmap.len * 3 * 2);
++ if (!tmp)
++ return -ENOMEM;
++
++ if (copy_from_user(tmp,
++ (void __user*)img->cmap.red, (img->cmap.len << 1)) ||
++ copy_from_user(tmp + (img->cmap.len << 1),
++ (void __user*)img->cmap.green, (img->cmap.len << 1)) ||
++ copy_from_user(tmp + (img->cmap.len << 2),
++ (void __user*)img->cmap.blue, (img->cmap.len << 1))) {
++ vfree(tmp);
++ return -EFAULT;
++ }
++
++ img->cmap.transp = NULL;
++ img->cmap.red = (u16*)tmp;
++ img->cmap.green = img->cmap.red + img->cmap.len;
++ img->cmap.blue = img->cmap.green + img->cmap.len;
++ } else {
++ img->cmap.red = NULL;
++ }
++
++ len = ((img->depth + 7) >> 3) * img->width * img->height;
++
++ /*
++ * Allocate an additional byte so that we never go outside of the
++ * buffer boundaries in the rendering functions in a 24 bpp mode.
++ */
++ tmp = vmalloc(len + 1);
++
++ if (!tmp)
++ goto out;
++
++ if (copy_from_user(tmp, (void __user*)img->data, len))
++ goto out;
++
++ img->data = tmp;
++
++ /* If this ioctl is a response to a request from kernel, the console sem
++ * is already held. */
++// if (origin == FBCON_DECOR_IO_ORIG_USER)
++ console_lock();
++
++ if (info->bgdecor.data)
++ vfree((u8*)info->bgdecor.data);
++ if (info->bgdecor.cmap.red)
++ vfree(info->bgdecor.cmap.red);
++
++ info->bgdecor = *img;
++
++ if (fbcon_decor_active_vc(vc) && fg_console == vc->vc_num) {
++ redraw_screen(vc, 0);
++ update_region(vc, vc->vc_origin +
++ vc->vc_size_row * vc->vc_top,
++ vc->vc_size_row * (vc->vc_bottom - vc->vc_top) / 2);
++ fbcon_decor_clear_margins(vc, info, 0);
++ }
++
++// if (origin == FBCON_DECOR_IO_ORIG_USER)
++ console_unlock();
++
++ return 0;
++
++out: if (img->cmap.red)
++ vfree(img->cmap.red);
++
++ if (tmp)
++ vfree(tmp);
++ return -ENOMEM;
++}
++
++static long fbcon_decor_ioctl(struct file *filp, u_int cmd, u_long arg)
++{
++ struct fbcon_decor_iowrapper __user *wrapper = (void __user*) arg;
++ struct vc_data *vc = NULL;
++ unsigned short vc_num = 0;
++ unsigned char origin = 0;
++ void __user *data = NULL;
++
++ if (!access_ok(VERIFY_READ, wrapper,
++ sizeof(struct fbcon_decor_iowrapper)))
++ return -EFAULT;
++
++ __get_user(vc_num, &wrapper->vc);
++ __get_user(origin, &wrapper->origin);
++ __get_user(data, &wrapper->data);
++
++ if (!vc_cons_allocated(vc_num))
++ return -EINVAL;
++
++ vc = vc_cons[vc_num].d;
++
++ switch (cmd) {
++ case FBIOCONDECOR_SETPIC:
++ {
++ struct fb_image img;
++ if (copy_from_user(&img, (struct fb_image __user *)data, sizeof(struct fb_image)))
++ return -EFAULT;
++
++ return fbcon_decor_ioctl_dosetpic(vc, &img, origin);
++ }
++ case FBIOCONDECOR_SETCFG:
++ {
++ struct vc_decor cfg;
++ if (copy_from_user(&cfg, (struct vc_decor __user *)data, sizeof(struct vc_decor)))
++ return -EFAULT;
++
++ return fbcon_decor_ioctl_dosetcfg(vc, &cfg, origin);
++ }
++ case FBIOCONDECOR_GETCFG:
++ {
++ int rval;
++ struct vc_decor cfg;
++
++ if (copy_from_user(&cfg, (struct vc_decor __user *)data, sizeof(struct vc_decor)))
++ return -EFAULT;
++
++ rval = fbcon_decor_ioctl_dogetcfg(vc, &cfg);
++
++ if (copy_to_user(data, &cfg, sizeof(struct vc_decor)))
++ return -EFAULT;
++ return rval;
++ }
++ case FBIOCONDECOR_SETSTATE:
++ {
++ unsigned int state = 0;
++ if (get_user(state, (unsigned int __user *)data))
++ return -EFAULT;
++ return fbcon_decor_ioctl_dosetstate(vc, state, origin);
++ }
++ case FBIOCONDECOR_GETSTATE:
++ {
++ unsigned int state = 0;
++ fbcon_decor_ioctl_dogetstate(vc, &state);
++ return put_user(state, (unsigned int __user *)data);
++ }
++
++ default:
++ return -ENOIOCTLCMD;
++ }
++}
++
++#ifdef CONFIG_COMPAT
++
++static long fbcon_decor_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) {
++
++ struct fbcon_decor_iowrapper32 __user *wrapper = (void __user *)arg;
++ struct vc_data *vc = NULL;
++ unsigned short vc_num = 0;
++ unsigned char origin = 0;
++ compat_uptr_t data_compat = 0;
++ void __user *data = NULL;
++
++ if (!access_ok(VERIFY_READ, wrapper,
++ sizeof(struct fbcon_decor_iowrapper32)))
++ return -EFAULT;
++
++ __get_user(vc_num, &wrapper->vc);
++ __get_user(origin, &wrapper->origin);
++ __get_user(data_compat, &wrapper->data);
++ data = compat_ptr(data_compat);
++
++ if (!vc_cons_allocated(vc_num))
++ return -EINVAL;
++
++ vc = vc_cons[vc_num].d;
++
++ switch (cmd) {
++ case FBIOCONDECOR_SETPIC32:
++ {
++ struct fb_image32 img_compat;
++ struct fb_image img;
++
++ if (copy_from_user(&img_compat, (struct fb_image32 __user *)data, sizeof(struct fb_image32)))
++ return -EFAULT;
++
++ fb_image_from_compat(img, img_compat);
++
++ return fbcon_decor_ioctl_dosetpic(vc, &img, origin);
++ }
++
++ case FBIOCONDECOR_SETCFG32:
++ {
++ struct vc_decor32 cfg_compat;
++ struct vc_decor cfg;
++
++ if (copy_from_user(&cfg_compat, (struct vc_decor32 __user *)data, sizeof(struct vc_decor32)))
++ return -EFAULT;
++
++ vc_decor_from_compat(cfg, cfg_compat);
++
++ return fbcon_decor_ioctl_dosetcfg(vc, &cfg, origin);
++ }
++
++ case FBIOCONDECOR_GETCFG32:
++ {
++ int rval;
++ struct vc_decor32 cfg_compat;
++ struct vc_decor cfg;
++
++ if (copy_from_user(&cfg_compat, (struct vc_decor32 __user *)data, sizeof(struct vc_decor32)))
++ return -EFAULT;
++ cfg.theme = compat_ptr(cfg_compat.theme);
++
++ rval = fbcon_decor_ioctl_dogetcfg(vc, &cfg);
++
++ vc_decor_to_compat(cfg_compat, cfg);
++
++ if (copy_to_user((struct vc_decor32 __user *)data, &cfg_compat, sizeof(struct vc_decor32)))
++ return -EFAULT;
++ return rval;
++ }
++
++ case FBIOCONDECOR_SETSTATE32:
++ {
++ compat_uint_t state_compat = 0;
++ unsigned int state = 0;
++
++ if (get_user(state_compat, (compat_uint_t __user *)data))
++ return -EFAULT;
++
++ state = (unsigned int)state_compat;
++
++ return fbcon_decor_ioctl_dosetstate(vc, state, origin);
++ }
++
++ case FBIOCONDECOR_GETSTATE32:
++ {
++ compat_uint_t state_compat = 0;
++ unsigned int state = 0;
++
++ fbcon_decor_ioctl_dogetstate(vc, &state);
++ state_compat = (compat_uint_t)state;
++
++ return put_user(state_compat, (compat_uint_t __user *)data);
++ }
++
++ default:
++ return -ENOIOCTLCMD;
++ }
++}
++#else
++ #define fbcon_decor_compat_ioctl NULL
++#endif
++
++static struct file_operations fbcon_decor_ops = {
++ .owner = THIS_MODULE,
++ .unlocked_ioctl = fbcon_decor_ioctl,
++ .compat_ioctl = fbcon_decor_compat_ioctl
++};
++
++static struct miscdevice fbcon_decor_dev = {
++ .minor = MISC_DYNAMIC_MINOR,
++ .name = "fbcondecor",
++ .fops = &fbcon_decor_ops
++};
++
++void fbcon_decor_reset(void)
++{
++ int i;
++
++ for (i = 0; i < num_registered_fb; i++) {
++ registered_fb[i]->bgdecor.data = NULL;
++ registered_fb[i]->bgdecor.cmap.red = NULL;
++ }
++
++ for (i = 0; i < MAX_NR_CONSOLES && vc_cons[i].d; i++) {
++ vc_cons[i].d->vc_decor.state = vc_cons[i].d->vc_decor.twidth =
++ vc_cons[i].d->vc_decor.theight = 0;
++ vc_cons[i].d->vc_decor.theme = NULL;
++ }
++
++ return;
++}
++
++int fbcon_decor_init(void)
++{
++ int i;
++
++ fbcon_decor_reset();
++
++ if (initialized)
++ return 0;
++
++ i = misc_register(&fbcon_decor_dev);
++ if (i) {
++ printk(KERN_ERR "fbcondecor: failed to register device\n");
++ return i;
++ }
++
++ fbcon_decor_call_helper("init", 0);
++ initialized = 1;
++ return 0;
++}
++
++int fbcon_decor_exit(void)
++{
++ fbcon_decor_reset();
++ return 0;
++}
++
++EXPORT_SYMBOL(fbcon_decor_path);
+diff --git a/drivers/video/console/fbcondecor.h b/drivers/video/console/fbcondecor.h
+new file mode 100644
+index 0000000..3b3724b
+--- /dev/null
++++ b/drivers/video/console/fbcondecor.h
+@@ -0,0 +1,78 @@
++/*
++ * linux/drivers/video/console/fbcondecor.h -- Framebuffer Console Decoration headers
++ *
++ * Copyright (C) 2004 Michal Januszewski <michalj+fbcondecor@gmail.com>
++ *
++ */
++
++#ifndef __FBCON_DECOR_H
++#define __FBCON_DECOR_H
++
++#ifndef _LINUX_FB_H
++#include <linux/fb.h>
++#endif
++
++/* This is needed for vc_cons in fbcmap.c */
++#include <linux/vt_kern.h>
++
++struct fb_cursor;
++struct fb_info;
++struct vc_data;
++
++#ifdef CONFIG_FB_CON_DECOR
++/* fbcondecor.c */
++int fbcon_decor_init(void);
++int fbcon_decor_exit(void);
++int fbcon_decor_call_helper(char* cmd, unsigned short cons);
++int fbcon_decor_disable(struct vc_data *vc, unsigned char redraw);
++
++/* cfbcondecor.c */
++void fbcon_decor_putcs(struct vc_data *vc, struct fb_info *info, const unsigned short *s, int count, int yy, int xx);
++void fbcon_decor_cursor(struct fb_info *info, struct fb_cursor *cursor);
++void fbcon_decor_clear(struct vc_data *vc, struct fb_info *info, int sy, int sx, int height, int width);
++void fbcon_decor_clear_margins(struct vc_data *vc, struct fb_info *info, int bottom_only);
++void fbcon_decor_blank(struct vc_data *vc, struct fb_info *info, int blank);
++void fbcon_decor_bmove_redraw(struct vc_data *vc, struct fb_info *info, int y, int sx, int dx, int width);
++void fbcon_decor_copy(u8 *dst, u8 *src, int height, int width, int linebytes, int srclinesbytes, int bpp);
++void fbcon_decor_fix_pseudo_pal(struct fb_info *info, struct vc_data *vc);
++
++/* vt.c */
++void acquire_console_sem(void);
++void release_console_sem(void);
++void do_unblank_screen(int entering_gfx);
++
++/* struct vc_data *y */
++#define fbcon_decor_active_vc(y) (y->vc_decor.state && y->vc_decor.theme)
++
++/* struct fb_info *x, struct vc_data *y */
++#define fbcon_decor_active_nores(x,y) (x->bgdecor.data && fbcon_decor_active_vc(y))
++
++/* struct fb_info *x, struct vc_data *y */
++#define fbcon_decor_active(x,y) (fbcon_decor_active_nores(x,y) && \
++ x->bgdecor.width == x->var.xres && \
++ x->bgdecor.height == x->var.yres && \
++ x->bgdecor.depth == x->var.bits_per_pixel)
++
++
++#else /* CONFIG_FB_CON_DECOR */
++
++static inline void fbcon_decor_putcs(struct vc_data *vc, struct fb_info *info, const unsigned short *s, int count, int yy, int xx) {}
++static inline void fbcon_decor_putc(struct vc_data *vc, struct fb_info *info, int c, int ypos, int xpos) {}
++static inline void fbcon_decor_cursor(struct fb_info *info, struct fb_cursor *cursor) {}
++static inline void fbcon_decor_clear(struct vc_data *vc, struct fb_info *info, int sy, int sx, int height, int width) {}
++static inline void fbcon_decor_clear_margins(struct vc_data *vc, struct fb_info *info, int bottom_only) {}
++static inline void fbcon_decor_blank(struct vc_data *vc, struct fb_info *info, int blank) {}
++static inline void fbcon_decor_bmove_redraw(struct vc_data *vc, struct fb_info *info, int y, int sx, int dx, int width) {}
++static inline void fbcon_decor_fix_pseudo_pal(struct fb_info *info, struct vc_data *vc) {}
++static inline int fbcon_decor_call_helper(char* cmd, unsigned short cons) { return 0; }
++static inline int fbcon_decor_init(void) { return 0; }
++static inline int fbcon_decor_exit(void) { return 0; }
++static inline int fbcon_decor_disable(struct vc_data *vc, unsigned char redraw) { return 0; }
++
++#define fbcon_decor_active_vc(y) (0)
++#define fbcon_decor_active_nores(x,y) (0)
++#define fbcon_decor_active(x,y) (0)
++
++#endif /* CONFIG_FB_CON_DECOR */
++
++#endif /* __FBCON_DECOR_H */
+diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
+index e1f4727..2952e33 100644
+--- a/drivers/video/fbdev/Kconfig
++++ b/drivers/video/fbdev/Kconfig
+@@ -1204,7 +1204,6 @@ config FB_MATROX
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
+- select FB_TILEBLITTING
+ select FB_MACMODES if PPC_PMAC
+ ---help---
+ Say Y here if you have a Matrox Millennium, Matrox Millennium II,
+diff --git a/drivers/video/fbdev/core/fbcmap.c b/drivers/video/fbdev/core/fbcmap.c
+index f89245b..05e036c 100644
+--- a/drivers/video/fbdev/core/fbcmap.c
++++ b/drivers/video/fbdev/core/fbcmap.c
+@@ -17,6 +17,8 @@
+ #include <linux/slab.h>
+ #include <linux/uaccess.h>
+
++#include "../../console/fbcondecor.h"
++
+ static u16 red2[] __read_mostly = {
+ 0x0000, 0xaaaa
+ };
+@@ -249,14 +251,17 @@ int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *info)
+ if (transp)
+ htransp = *transp++;
+ if (info->fbops->fb_setcolreg(start++,
+- hred, hgreen, hblue,
++ hred, hgreen, hblue,
+ htransp, info))
+ break;
+ }
+ }
+- if (rc == 0)
++ if (rc == 0) {
+ fb_copy_cmap(cmap, &info->cmap);
+-
++ if (fbcon_decor_active(info, vc_cons[fg_console].d) &&
++ info->fix.visual == FB_VISUAL_DIRECTCOLOR)
++ fbcon_decor_fix_pseudo_pal(info, vc_cons[fg_console].d);
++ }
+ return rc;
+ }
+
+diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
+index b6d5008..d6703f2 100644
+--- a/drivers/video/fbdev/core/fbmem.c
++++ b/drivers/video/fbdev/core/fbmem.c
+@@ -1250,15 +1250,6 @@ struct fb_fix_screeninfo32 {
+ u16 reserved[3];
+ };
+
+-struct fb_cmap32 {
+- u32 start;
+- u32 len;
+- compat_caddr_t red;
+- compat_caddr_t green;
+- compat_caddr_t blue;
+- compat_caddr_t transp;
+-};
+-
+ static int fb_getput_cmap(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+ {
+diff --git a/include/linux/console_decor.h b/include/linux/console_decor.h
+new file mode 100644
+index 0000000..04b8d80
+--- /dev/null
++++ b/include/linux/console_decor.h
+@@ -0,0 +1,46 @@
++#ifndef _LINUX_CONSOLE_DECOR_H_
++#define _LINUX_CONSOLE_DECOR_H_ 1
++
++/* A structure used by the framebuffer console decorations (drivers/video/console/fbcondecor.c) */
++struct vc_decor {
++ __u8 bg_color; /* The color that is to be treated as transparent */
++ __u8 state; /* Current decor state: 0 = off, 1 = on */
++ __u16 tx, ty; /* Top left corner coordinates of the text field */
++ __u16 twidth, theight; /* Width and height of the text field */
++ char* theme;
++};
++
++#ifdef __KERNEL__
++#ifdef CONFIG_COMPAT
++#include <linux/compat.h>
++
++struct vc_decor32 {
++ __u8 bg_color; /* The color that is to be treated as transparent */
++ __u8 state; /* Current decor state: 0 = off, 1 = on */
++ __u16 tx, ty; /* Top left corner coordinates of the text field */
++ __u16 twidth, theight; /* Width and height of the text field */
++ compat_uptr_t theme;
++};
++
++#define vc_decor_from_compat(to, from) \
++ (to).bg_color = (from).bg_color; \
++ (to).state = (from).state; \
++ (to).tx = (from).tx; \
++ (to).ty = (from).ty; \
++ (to).twidth = (from).twidth; \
++ (to).theight = (from).theight; \
++ (to).theme = compat_ptr((from).theme)
++
++#define vc_decor_to_compat(to, from) \
++ (to).bg_color = (from).bg_color; \
++ (to).state = (from).state; \
++ (to).tx = (from).tx; \
++ (to).ty = (from).ty; \
++ (to).twidth = (from).twidth; \
++ (to).theight = (from).theight; \
++ (to).theme = ptr_to_compat((from).theme)
++
++#endif /* CONFIG_COMPAT */
++#endif /* __KERNEL__ */
++
++#endif
+diff --git a/include/linux/console_struct.h b/include/linux/console_struct.h
+index 7f0c329..98f5d60 100644
+--- a/include/linux/console_struct.h
++++ b/include/linux/console_struct.h
+@@ -19,6 +19,7 @@
+ struct vt_struct;
+
+ #define NPAR 16
++#include <linux/console_decor.h>
+
+ struct vc_data {
+ struct tty_port port; /* Upper level data */
+@@ -107,6 +108,8 @@ struct vc_data {
+ unsigned long vc_uni_pagedir;
+ unsigned long *vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
+ bool vc_panic_force_write; /* when oops/panic this VC can accept forced output/blanking */
++
++ struct vc_decor vc_decor;
+ /* additional information is in vt_kern.h */
+ };
+
+diff --git a/include/linux/fb.h b/include/linux/fb.h
+index fe6ac95..1e36b03 100644
+--- a/include/linux/fb.h
++++ b/include/linux/fb.h
+@@ -219,6 +219,34 @@ struct fb_deferred_io {
+ };
+ #endif
+
++#ifdef __KERNEL__
++#ifdef CONFIG_COMPAT
++struct fb_image32 {
++ __u32 dx; /* Where to place image */
++ __u32 dy;
++ __u32 width; /* Size of image */
++ __u32 height;
++ __u32 fg_color; /* Only used when a mono bitmap */
++ __u32 bg_color;
++ __u8 depth; /* Depth of the image */
++ const compat_uptr_t data; /* Pointer to image data */
++ struct fb_cmap32 cmap; /* color map info */
++};
++
++#define fb_image_from_compat(to, from) \
++ (to).dx = (from).dx; \
++ (to).dy = (from).dy; \
++ (to).width = (from).width; \
++ (to).height = (from).height; \
++ (to).fg_color = (from).fg_color; \
++ (to).bg_color = (from).bg_color; \
++ (to).depth = (from).depth; \
++ (to).data = compat_ptr((from).data); \
++ fb_cmap_from_compat((to).cmap, (from).cmap)
++
++#endif /* CONFIG_COMPAT */
++#endif /* __KERNEL__ */
++
+ /*
+ * Frame buffer operations
+ *
+@@ -489,6 +517,9 @@ struct fb_info {
+ #define FBINFO_STATE_SUSPENDED 1
+ u32 state; /* Hardware state i.e suspend */
+ void *fbcon_par; /* fbcon use-only private area */
++
++ struct fb_image bgdecor;
++
+ /* From here on everything is device dependent */
+ void *par;
+ /* we need the PCI or similar aperture base/size not
+diff --git a/include/uapi/linux/fb.h b/include/uapi/linux/fb.h
+index fb795c3..dc77a03 100644
+--- a/include/uapi/linux/fb.h
++++ b/include/uapi/linux/fb.h
+@@ -8,6 +8,25 @@
+
+ #define FB_MAX 32 /* sufficient for now */
+
++struct fbcon_decor_iowrapper
++{
++ unsigned short vc; /* Virtual console */
++ unsigned char origin; /* Point of origin of the request */
++ void *data;
++};
++
++#ifdef __KERNEL__
++#ifdef CONFIG_COMPAT
++#include <linux/compat.h>
++struct fbcon_decor_iowrapper32
++{
++ unsigned short vc; /* Virtual console */
++ unsigned char origin; /* Point of origin of the request */
++ compat_uptr_t data;
++};
++#endif /* CONFIG_COMPAT */
++#endif /* __KERNEL__ */
++
+ /* ioctls
+ 0x46 is 'F' */
+ #define FBIOGET_VSCREENINFO 0x4600
+@@ -35,6 +54,25 @@
+ #define FBIOGET_DISPINFO 0x4618
+ #define FBIO_WAITFORVSYNC _IOW('F', 0x20, __u32)
+
++#define FBIOCONDECOR_SETCFG _IOWR('F', 0x19, struct fbcon_decor_iowrapper)
++#define FBIOCONDECOR_GETCFG _IOR('F', 0x1A, struct fbcon_decor_iowrapper)
++#define FBIOCONDECOR_SETSTATE _IOWR('F', 0x1B, struct fbcon_decor_iowrapper)
++#define FBIOCONDECOR_GETSTATE _IOR('F', 0x1C, struct fbcon_decor_iowrapper)
++#define FBIOCONDECOR_SETPIC _IOWR('F', 0x1D, struct fbcon_decor_iowrapper)
++#ifdef __KERNEL__
++#ifdef CONFIG_COMPAT
++#define FBIOCONDECOR_SETCFG32 _IOWR('F', 0x19, struct fbcon_decor_iowrapper32)
++#define FBIOCONDECOR_GETCFG32 _IOR('F', 0x1A, struct fbcon_decor_iowrapper32)
++#define FBIOCONDECOR_SETSTATE32 _IOWR('F', 0x1B, struct fbcon_decor_iowrapper32)
++#define FBIOCONDECOR_GETSTATE32 _IOR('F', 0x1C, struct fbcon_decor_iowrapper32)
++#define FBIOCONDECOR_SETPIC32 _IOWR('F', 0x1D, struct fbcon_decor_iowrapper32)
++#endif /* CONFIG_COMPAT */
++#endif /* __KERNEL__ */
++
++#define FBCON_DECOR_THEME_LEN 128 /* Maximum lenght of a theme name */
++#define FBCON_DECOR_IO_ORIG_KERNEL 0 /* Kernel ioctl origin */
++#define FBCON_DECOR_IO_ORIG_USER 1 /* User ioctl origin */
++
+ #define FB_TYPE_PACKED_PIXELS 0 /* Packed Pixels */
+ #define FB_TYPE_PLANES 1 /* Non interleaved planes */
+ #define FB_TYPE_INTERLEAVED_PLANES 2 /* Interleaved planes */
+@@ -277,6 +315,29 @@ struct fb_var_screeninfo {
+ __u32 reserved[4]; /* Reserved for future compatibility */
+ };
+
++#ifdef __KERNEL__
++#ifdef CONFIG_COMPAT
++struct fb_cmap32 {
++ __u32 start;
++ __u32 len; /* Number of entries */
++ compat_uptr_t red; /* Red values */
++ compat_uptr_t green;
++ compat_uptr_t blue;
++ compat_uptr_t transp; /* transparency, can be NULL */
++};
++
++#define fb_cmap_from_compat(to, from) \
++ (to).start = (from).start; \
++ (to).len = (from).len; \
++ (to).red = compat_ptr((from).red); \
++ (to).green = compat_ptr((from).green); \
++ (to).blue = compat_ptr((from).blue); \
++ (to).transp = compat_ptr((from).transp)
++
++#endif /* CONFIG_COMPAT */
++#endif /* __KERNEL__ */
++
++
+ struct fb_cmap {
+ __u32 start; /* First entry */
+ __u32 len; /* Number of entries */
+diff --git a/kernel/sysctl.c b/kernel/sysctl.c
+index 74f5b58..6386ab0 100644
+--- a/kernel/sysctl.c
++++ b/kernel/sysctl.c
+@@ -146,6 +146,10 @@ static const int cap_last_cap = CAP_LAST_CAP;
+ static unsigned long hung_task_timeout_max = (LONG_MAX/HZ);
+ #endif
+
++#ifdef CONFIG_FB_CON_DECOR
++extern char fbcon_decor_path[];
++#endif
++
+ #ifdef CONFIG_INOTIFY_USER
+ #include <linux/inotify.h>
+ #endif
+@@ -255,6 +259,15 @@ static struct ctl_table sysctl_base_table[] = {
+ .mode = 0555,
+ .child = dev_table,
+ },
++#ifdef CONFIG_FB_CON_DECOR
++ {
++ .procname = "fbcondecor",
++ .data = &fbcon_decor_path,
++ .maxlen = KMOD_PATH_LEN,
++ .mode = 0644,
++ .proc_handler = &proc_dostring,
++ },
++#endif
+ { }
+ };
+
diff --git a/5000_enable-additional-cpu-optimizations-for-gcc.patch b/5000_enable-additional-cpu-optimizations-for-gcc.patch
new file mode 100644
index 0000000..f7ab6f0
--- /dev/null
+++ b/5000_enable-additional-cpu-optimizations-for-gcc.patch
@@ -0,0 +1,327 @@
+This patch has been tested on and known to work with kernel versions from 3.2
+up to the latest git version (pulled on 12/14/2013).
+
+This patch will expand the number of microarchitectures to include new
+processors including: AMD K10-family, AMD Family 10h (Barcelona), AMD Family
+14h (Bobcat), AMD Family 15h (Bulldozer), AMD Family 15h (Piledriver), AMD
+Family 16h (Jaguar), Intel 1st Gen Core i3/i5/i7 (Nehalem), Intel 2nd Gen Core
+i3/i5/i7 (Sandybridge), Intel 3rd Gen Core i3/i5/i7 (Ivybridge), and Intel 4th
+Gen Core i3/i5/i7 (Haswell). It also offers the compiler the 'native' flag.
+
+Small but real speed increases are measurable using a make endpoint comparing
+a generic kernel to one built with one of the respective microarchs.
+
+See the following experimental evidence supporting this statement:
+https://github.com/graysky2/kernel_gcc_patch
+
+REQUIREMENTS
+linux version >=3.15
+gcc version <4.9
+
+---
+diff -uprN a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h
+--- a/arch/x86/include/asm/module.h 2013-11-03 18:41:51.000000000 -0500
++++ b/arch/x86/include/asm/module.h 2013-12-15 06:21:24.351122516 -0500
+@@ -15,6 +15,16 @@
+ #define MODULE_PROC_FAMILY "586MMX "
+ #elif defined CONFIG_MCORE2
+ #define MODULE_PROC_FAMILY "CORE2 "
++#elif defined CONFIG_MNATIVE
++#define MODULE_PROC_FAMILY "NATIVE "
++#elif defined CONFIG_MCOREI7
++#define MODULE_PROC_FAMILY "COREI7 "
++#elif defined CONFIG_MCOREI7AVX
++#define MODULE_PROC_FAMILY "COREI7AVX "
++#elif defined CONFIG_MCOREAVXI
++#define MODULE_PROC_FAMILY "COREAVXI "
++#elif defined CONFIG_MCOREAVX2
++#define MODULE_PROC_FAMILY "COREAVX2 "
+ #elif defined CONFIG_MATOM
+ #define MODULE_PROC_FAMILY "ATOM "
+ #elif defined CONFIG_M686
+@@ -33,6 +43,18 @@
+ #define MODULE_PROC_FAMILY "K7 "
+ #elif defined CONFIG_MK8
+ #define MODULE_PROC_FAMILY "K8 "
++#elif defined CONFIG_MK10
++#define MODULE_PROC_FAMILY "K10 "
++#elif defined CONFIG_MBARCELONA
++#define MODULE_PROC_FAMILY "BARCELONA "
++#elif defined CONFIG_MBOBCAT
++#define MODULE_PROC_FAMILY "BOBCAT "
++#elif defined CONFIG_MBULLDOZER
++#define MODULE_PROC_FAMILY "BULLDOZER "
++#elif defined CONFIG_MPILEDRIVER
++#define MODULE_PROC_FAMILY "PILEDRIVER "
++#elif defined CONFIG_MJAGUAR
++#define MODULE_PROC_FAMILY "JAGUAR "
+ #elif defined CONFIG_MELAN
+ #define MODULE_PROC_FAMILY "ELAN "
+ #elif defined CONFIG_MCRUSOE
+diff -uprN a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
+--- a/arch/x86/Kconfig.cpu 2013-11-03 18:41:51.000000000 -0500
++++ b/arch/x86/Kconfig.cpu 2013-12-15 06:21:24.351122516 -0500
+@@ -139,7 +139,7 @@ config MPENTIUM4
+
+
+ config MK6
+- bool "K6/K6-II/K6-III"
++ bool "AMD K6/K6-II/K6-III"
+ depends on X86_32
+ ---help---
+ Select this for an AMD K6-family processor. Enables use of
+@@ -147,7 +147,7 @@ config MK6
+ flags to GCC.
+
+ config MK7
+- bool "Athlon/Duron/K7"
++ bool "AMD Athlon/Duron/K7"
+ depends on X86_32
+ ---help---
+ Select this for an AMD Athlon K7-family processor. Enables use of
+@@ -155,12 +155,55 @@ config MK7
+ flags to GCC.
+
+ config MK8
+- bool "Opteron/Athlon64/Hammer/K8"
++ bool "AMD Opteron/Athlon64/Hammer/K8"
+ ---help---
+ Select this for an AMD Opteron or Athlon64 Hammer-family processor.
+ Enables use of some extended instructions, and passes appropriate
+ optimization flags to GCC.
+
++config MK10
++ bool "AMD 61xx/7x50/PhenomX3/X4/II/K10"
++ ---help---
++ Select this for an AMD 61xx Eight-Core Magny-Cours, Athlon X2 7x50,
++ Phenom X3/X4/II, Athlon II X2/X3/X4, or Turion II-family processor.
++ Enables use of some extended instructions, and passes appropriate
++ optimization flags to GCC.
++
++config MBARCELONA
++ bool "AMD Barcelona"
++ ---help---
++ Select this for AMD Barcelona and newer processors.
++
++ Enables -march=barcelona
++
++config MBOBCAT
++ bool "AMD Bobcat"
++ ---help---
++ Select this for AMD Bobcat processors.
++
++ Enables -march=btver1
++
++config MBULLDOZER
++ bool "AMD Bulldozer"
++ ---help---
++ Select this for AMD Bulldozer processors.
++
++ Enables -march=bdver1
++
++config MPILEDRIVER
++ bool "AMD Piledriver"
++ ---help---
++ Select this for AMD Piledriver processors.
++
++ Enables -march=bdver2
++
++config MJAGUAR
++ bool "AMD Jaguar"
++ ---help---
++ Select this for AMD Jaguar processors.
++
++ Enables -march=btver2
++
+ config MCRUSOE
+ bool "Crusoe"
+ depends on X86_32
+@@ -251,8 +294,17 @@ config MPSC
+ using the cpu family field
+ in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.
+
++config MATOM
++ bool "Intel Atom"
++ ---help---
++
++ Select this for the Intel Atom platform. Intel Atom CPUs have an
++ in-order pipelining architecture and thus can benefit from
++ accordingly optimized code. Use a recent GCC with specific Atom
++ support in order to fully benefit from selecting this option.
++
+ config MCORE2
+- bool "Core 2/newer Xeon"
++ bool "Intel Core 2"
+ ---help---
+
+ Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
+@@ -260,14 +312,40 @@ config MCORE2
+ family in /proc/cpuinfo. Newer ones have 6 and older ones 15
+ (not a typo)
+
+-config MATOM
+- bool "Intel Atom"
++ Enables -march=core2
++
++config MCOREI7
++ bool "Intel Core i7"
+ ---help---
+
+- Select this for the Intel Atom platform. Intel Atom CPUs have an
+- in-order pipelining architecture and thus can benefit from
+- accordingly optimized code. Use a recent GCC with specific Atom
+- support in order to fully benefit from selecting this option.
++ Select this for the Intel Nehalem platform. Intel Nehalem proecessors
++ include Core i3, i5, i7, Xeon: 34xx, 35xx, 55xx, 56xx, 75xx processors.
++
++ Enables -march=corei7
++
++config MCOREI7AVX
++ bool "Intel Core 2nd Gen AVX"
++ ---help---
++
++ Select this for 2nd Gen Core processors including Sandy Bridge.
++
++ Enables -march=corei7-avx
++
++config MCOREAVXI
++ bool "Intel Core 3rd Gen AVX"
++ ---help---
++
++ Select this for 3rd Gen Core processors including Ivy Bridge.
++
++ Enables -march=core-avx-i
++
++config MCOREAVX2
++ bool "Intel Core AVX2"
++ ---help---
++
++ Select this for AVX2 enabled processors including Haswell.
++
++ Enables -march=core-avx2
+
+ config GENERIC_CPU
+ bool "Generic-x86-64"
+@@ -276,6 +354,19 @@ config GENERIC_CPU
+ Generic x86-64 CPU.
+ Run equally well on all x86-64 CPUs.
+
++config MNATIVE
++ bool "Native optimizations autodetected by GCC"
++ ---help---
++
++ GCC 4.2 and above support -march=native, which automatically detects
++ the optimum settings to use based on your processor. -march=native
++ also detects and applies additional settings beyond -march specific
++ to your CPU, (eg. -msse4). Unless you have a specific reason not to
++ (e.g. distcc cross-compiling), you should probably be using
++ -march=native rather than anything listed below.
++
++ Enables -march=native
++
+ endchoice
+
+ config X86_GENERIC
+@@ -300,7 +391,7 @@ config X86_INTERNODE_CACHE_SHIFT
+ config X86_L1_CACHE_SHIFT
+ int
+ default "7" if MPENTIUM4 || MPSC
+- default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
++ default "6" if MK7 || MK8 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MPENTIUMM || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2 || MATOM || MVIAC7 || X86_GENERIC || MNATIVE || GENERIC_CPU
+ default "4" if MELAN || M486 || MGEODEGX1
+ default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
+
+@@ -331,11 +422,11 @@ config X86_ALIGNMENT_16
+
+ config X86_INTEL_USERCOPY
+ def_bool y
+- depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2
++ depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || MNATIVE || X86_GENERIC || MK8 || MK7 || MK10 || MBARCELONA || MEFFICEON || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2
+
+ config X86_USE_PPRO_CHECKSUM
+ def_bool y
+- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM
++ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MK10 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2 || MATOM || MNATIVE
+
+ config X86_USE_3DNOW
+ def_bool y
+@@ -363,17 +454,17 @@ config X86_P6_NOP
+
+ config X86_TSC
+ def_bool y
+- depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) || X86_64
++ depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MCOREI7 || MCOREI7-AVX || MATOM) || X86_64 || MNATIVE
+
+ config X86_CMPXCHG64
+ def_bool y
+- depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM
++ depends on X86_PAE || X86_64 || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM || MNATIVE
+
+ # this should be set for all -march=.. options where the compiler
+ # generates cmov.
+ config X86_CMOV
+ def_bool y
+- depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
++ depends on (MK8 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MK7 || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MNATIVE || MATOM || MGEODE_LX)
+
+ config X86_MINIMUM_CPU_FAMILY
+ int
+diff -uprN a/arch/x86/Makefile b/arch/x86/Makefile
+--- a/arch/x86/Makefile 2013-11-03 18:41:51.000000000 -0500
++++ b/arch/x86/Makefile 2013-12-15 06:21:24.354455723 -0500
+@@ -61,11 +61,26 @@ else
+ KBUILD_CFLAGS += $(call cc-option,-mno-sse -mpreferred-stack-boundary=3)
+
+ # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
++ cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native)
+ cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
++ cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10)
++ cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona)
++ cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1)
++ cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1)
++ cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2)
++ cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2)
+ cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
+
+ cflags-$(CONFIG_MCORE2) += \
+- $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
++ $(call cc-option,-march=core2,$(call cc-option,-mtune=core2))
++ cflags-$(CONFIG_MCOREI7) += \
++ $(call cc-option,-march=corei7,$(call cc-option,-mtune=corei7))
++ cflags-$(CONFIG_MCOREI7AVX) += \
++ $(call cc-option,-march=corei7-avx,$(call cc-option,-mtune=corei7-avx))
++ cflags-$(CONFIG_MCOREAVXI) += \
++ $(call cc-option,-march=core-avx-i,$(call cc-option,-mtune=core-avx-i))
++ cflags-$(CONFIG_MCOREAVX2) += \
++ $(call cc-option,-march=core-avx2,$(call cc-option,-mtune=core-avx2))
+ cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
+ $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
+ cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
+diff -uprN a/arch/x86/Makefile_32.cpu b/arch/x86/Makefile_32.cpu
+--- a/arch/x86/Makefile_32.cpu 2013-11-03 18:41:51.000000000 -0500
++++ b/arch/x86/Makefile_32.cpu 2013-12-15 06:21:24.354455723 -0500
+@@ -23,7 +23,14 @@ cflags-$(CONFIG_MK6) += -march=k6
+ # Please note, that patches that add -march=athlon-xp and friends are pointless.
+ # They make zero difference whatsosever to performance at this time.
+ cflags-$(CONFIG_MK7) += -march=athlon
++cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native)
+ cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,-march=athlon)
++cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10,-march=athlon)
++cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona,-march=athlon)
++cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1,-march=athlon)
++cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1,-march=athlon)
++cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2,-march=athlon)
++cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2,-march=athlon)
+ cflags-$(CONFIG_MCRUSOE) += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
+ cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
+ cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586)
+@@ -32,6 +39,10 @@ cflags-$(CONFIG_MCYRIXIII) += $(call cc-
+ cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686)
+ cflags-$(CONFIG_MVIAC7) += -march=i686
+ cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2)
++cflags-$(CONFIG_MCOREI7) += -march=i686 $(call tune,corei7)
++cflags-$(CONFIG_MCOREI7AVX) += -march=i686 $(call tune,corei7-avx)
++cflags-$(CONFIG_MCOREAVXI) += -march=i686 $(call tune,core-avx-i)
++cflags-$(CONFIG_MCOREAVX2) += -march=i686 $(call tune,core-avx2)
+ cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom,$(call cc-option,-march=core2,-march=i686)) \
+ $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
diff --git a/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch b/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
new file mode 100644
index 0000000..c4efd06
--- /dev/null
+++ b/5010_enable-additional-cpu-optimizations-for-gcc-4.9.patch
@@ -0,0 +1,402 @@
+WARNING - this version of the patch works with version 4.9+ of gcc and with
+kernel version 3.15.x+ and should NOT be applied when compiling on older
+versions due to name changes of the flags with the 4.9 release of gcc.
+Use the older version of this patch hosted on the same github for older
+versions of gcc. For example:
+
+corei7 --> nehalem
+corei7-avx --> sandybridge
+core-avx-i --> ivybridge
+core-avx2 --> haswell
+
+For more, see: https://gcc.gnu.org/gcc-4.9/changes.html
+
+It also changes 'atom' to 'bonnell' in accordance with the gcc v4.9 changes.
+Note that upstream is using the deprecated 'match=atom' flags when I believe it
+should use the newer 'march=bonnell' flag for atom processors.
+
+I have made that change to this patch set as well. See the following kernel
+bug report to see if I'm right: https://bugzilla.kernel.org/show_bug.cgi?id=77461
+
+This patch will expand the number of microarchitectures to include newer
+processors including: AMD K10-family, AMD Family 10h (Barcelona), AMD Family
+14h (Bobcat), AMD Family 15h (Bulldozer), AMD Family 15h (Piledriver), AMD
+Family 16h (Jaguar), Intel 1st Gen Core i3/i5/i7 (Nehalem), Intel 1.5 Gen Core
+i3/i5/i7 (Westmere), Intel 2nd Gen Core i3/i5/i7 (Sandybridge), Intel 3rd Gen
+Core i3/i5/i7 (Ivybridge), Intel 4th Gen Core i3/i5/i7 (Haswell), Intel 5th
+Gen Core i3/i5/i7 (Broadwell), and the low power Silvermont series of Atom
+processors (Silvermont). It also offers the compiler the 'native' flag.
+
+Small but real speed increases are measurable using a make endpoint comparing
+a generic kernel to one built with one of the respective microarchs.
+
+See the following experimental evidence supporting this statement:
+https://github.com/graysky2/kernel_gcc_patch
+
+REQUIREMENTS
+linux version >=3.15
+gcc version >=4.9
+
+--- a/arch/x86/include/asm/module.h 2014-06-16 16:44:27.000000000 -0400
++++ b/arch/x86/include/asm/module.h 2015-03-07 03:27:32.556672424 -0500
+@@ -15,6 +15,22 @@
+ #define MODULE_PROC_FAMILY "586MMX "
+ #elif defined CONFIG_MCORE2
+ #define MODULE_PROC_FAMILY "CORE2 "
++#elif defined CONFIG_MNATIVE
++#define MODULE_PROC_FAMILY "NATIVE "
++#elif defined CONFIG_MNEHALEM
++#define MODULE_PROC_FAMILY "NEHALEM "
++#elif defined CONFIG_MWESTMERE
++#define MODULE_PROC_FAMILY "WESTMERE "
++#elif defined CONFIG_MSILVERMONT
++#define MODULE_PROC_FAMILY "SILVERMONT "
++#elif defined CONFIG_MSANDYBRIDGE
++#define MODULE_PROC_FAMILY "SANDYBRIDGE "
++#elif defined CONFIG_MIVYBRIDGE
++#define MODULE_PROC_FAMILY "IVYBRIDGE "
++#elif defined CONFIG_MHASWELL
++#define MODULE_PROC_FAMILY "HASWELL "
++#elif defined CONFIG_MBROADWELL
++#define MODULE_PROC_FAMILY "BROADWELL "
+ #elif defined CONFIG_MATOM
+ #define MODULE_PROC_FAMILY "ATOM "
+ #elif defined CONFIG_M686
+@@ -33,6 +49,20 @@
+ #define MODULE_PROC_FAMILY "K7 "
+ #elif defined CONFIG_MK8
+ #define MODULE_PROC_FAMILY "K8 "
++#elif defined CONFIG_MK8SSE3
++#define MODULE_PROC_FAMILY "K8SSE3 "
++#elif defined CONFIG_MK10
++#define MODULE_PROC_FAMILY "K10 "
++#elif defined CONFIG_MBARCELONA
++#define MODULE_PROC_FAMILY "BARCELONA "
++#elif defined CONFIG_MBOBCAT
++#define MODULE_PROC_FAMILY "BOBCAT "
++#elif defined CONFIG_MBULLDOZER
++#define MODULE_PROC_FAMILY "BULLDOZER "
++#elif defined CONFIG_MPILEDRIVER
++#define MODULE_PROC_FAMILY "PILEDRIVER "
++#elif defined CONFIG_MJAGUAR
++#define MODULE_PROC_FAMILY "JAGUAR "
+ #elif defined CONFIG_MELAN
+ #define MODULE_PROC_FAMILY "ELAN "
+ #elif defined CONFIG_MCRUSOE
+--- a/arch/x86/Kconfig.cpu 2014-06-16 16:44:27.000000000 -0400
++++ b/arch/x86/Kconfig.cpu 2015-03-07 03:32:14.337713226 -0500
+@@ -137,9 +137,8 @@ config MPENTIUM4
+ -Paxville
+ -Dempsey
+
+-
+ config MK6
+- bool "K6/K6-II/K6-III"
++ bool "AMD K6/K6-II/K6-III"
+ depends on X86_32
+ ---help---
+ Select this for an AMD K6-family processor. Enables use of
+@@ -147,7 +146,7 @@ config MK6
+ flags to GCC.
+
+ config MK7
+- bool "Athlon/Duron/K7"
++ bool "AMD Athlon/Duron/K7"
+ depends on X86_32
+ ---help---
+ Select this for an AMD Athlon K7-family processor. Enables use of
+@@ -155,12 +154,62 @@ config MK7
+ flags to GCC.
+
+ config MK8
+- bool "Opteron/Athlon64/Hammer/K8"
++ bool "AMD Opteron/Athlon64/Hammer/K8"
+ ---help---
+ Select this for an AMD Opteron or Athlon64 Hammer-family processor.
+ Enables use of some extended instructions, and passes appropriate
+ optimization flags to GCC.
+
++config MK8SSE3
++ bool "AMD Opteron/Athlon64/Hammer/K8 with SSE3"
++ ---help---
++ Select this for improved AMD Opteron or Athlon64 Hammer-family processors.
++ Enables use of some extended instructions, and passes appropriate
++ optimization flags to GCC.
++
++config MK10
++ bool "AMD 61xx/7x50/PhenomX3/X4/II/K10"
++ ---help---
++ Select this for an AMD 61xx Eight-Core Magny-Cours, Athlon X2 7x50,
++ Phenom X3/X4/II, Athlon II X2/X3/X4, or Turion II-family processor.
++ Enables use of some extended instructions, and passes appropriate
++ optimization flags to GCC.
++
++config MBARCELONA
++ bool "AMD Barcelona"
++ ---help---
++ Select this for AMD Barcelona and newer processors.
++
++ Enables -march=barcelona
++
++config MBOBCAT
++ bool "AMD Bobcat"
++ ---help---
++ Select this for AMD Bobcat processors.
++
++ Enables -march=btver1
++
++config MBULLDOZER
++ bool "AMD Bulldozer"
++ ---help---
++ Select this for AMD Bulldozer processors.
++
++ Enables -march=bdver1
++
++config MPILEDRIVER
++ bool "AMD Piledriver"
++ ---help---
++ Select this for AMD Piledriver processors.
++
++ Enables -march=bdver2
++
++config MJAGUAR
++ bool "AMD Jaguar"
++ ---help---
++ Select this for AMD Jaguar processors.
++
++ Enables -march=btver2
++
+ config MCRUSOE
+ bool "Crusoe"
+ depends on X86_32
+@@ -251,8 +300,17 @@ config MPSC
+ using the cpu family field
+ in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.
+
++config MATOM
++ bool "Intel Atom"
++ ---help---
++
++ Select this for the Intel Atom platform. Intel Atom CPUs have an
++ in-order pipelining architecture and thus can benefit from
++ accordingly optimized code. Use a recent GCC with specific Atom
++ support in order to fully benefit from selecting this option.
++
+ config MCORE2
+- bool "Core 2/newer Xeon"
++ bool "Intel Core 2"
+ ---help---
+
+ Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
+@@ -260,14 +318,63 @@ config MCORE2
+ family in /proc/cpuinfo. Newer ones have 6 and older ones 15
+ (not a typo)
+
+-config MATOM
+- bool "Intel Atom"
++ Enables -march=core2
++
++config MNEHALEM
++ bool "Intel Nehalem"
+ ---help---
+
+- Select this for the Intel Atom platform. Intel Atom CPUs have an
+- in-order pipelining architecture and thus can benefit from
+- accordingly optimized code. Use a recent GCC with specific Atom
+- support in order to fully benefit from selecting this option.
++ Select this for 1st Gen Core processors in the Nehalem family.
++
++ Enables -march=nehalem
++
++config MWESTMERE
++ bool "Intel Westmere"
++ ---help---
++
++ Select this for the Intel Westmere formerly Nehalem-C family.
++
++ Enables -march=westmere
++
++config MSILVERMONT
++ bool "Intel Silvermont"
++ ---help---
++
++ Select this for the Intel Silvermont platform.
++
++ Enables -march=silvermont
++
++config MSANDYBRIDGE
++ bool "Intel Sandy Bridge"
++ ---help---
++
++ Select this for 2nd Gen Core processors in the Sandy Bridge family.
++
++ Enables -march=sandybridge
++
++config MIVYBRIDGE
++ bool "Intel Ivy Bridge"
++ ---help---
++
++ Select this for 3rd Gen Core processors in the Ivy Bridge family.
++
++ Enables -march=ivybridge
++
++config MHASWELL
++ bool "Intel Haswell"
++ ---help---
++
++ Select this for 4th Gen Core processors in the Haswell family.
++
++ Enables -march=haswell
++
++config MBROADWELL
++ bool "Intel Broadwell"
++ ---help---
++
++ Select this for 5th Gen Core processors in the Broadwell family.
++
++ Enables -march=broadwell
+
+ config GENERIC_CPU
+ bool "Generic-x86-64"
+@@ -276,6 +383,19 @@ config GENERIC_CPU
+ Generic x86-64 CPU.
+ Run equally well on all x86-64 CPUs.
+
++config MNATIVE
++ bool "Native optimizations autodetected by GCC"
++ ---help---
++
++ GCC 4.2 and above support -march=native, which automatically detects
++ the optimum settings to use based on your processor. -march=native
++ also detects and applies additional settings beyond -march specific
++ to your CPU, (eg. -msse4). Unless you have a specific reason not to
++ (e.g. distcc cross-compiling), you should probably be using
++ -march=native rather than anything listed below.
++
++ Enables -march=native
++
+ endchoice
+
+ config X86_GENERIC
+@@ -300,7 +420,7 @@ config X86_INTERNODE_CACHE_SHIFT
+ config X86_L1_CACHE_SHIFT
+ int
+ default "7" if MPENTIUM4 || MPSC
+- default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
++ default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || BROADWELL || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
+ default "4" if MELAN || M486 || MGEODEGX1
+ default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
+
+@@ -331,11 +451,11 @@ config X86_ALIGNMENT_16
+
+ config X86_INTEL_USERCOPY
+ def_bool y
+- depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2
++ depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK8SSE3 || MK7 || MEFFICEON || MCORE2 || MK10 || MBARCELONA || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MNATIVE
+
+ config X86_USE_PPRO_CHECKSUM
+ def_bool y
+- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM
++ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MK10 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MATOM || MNATIVE
+
+ config X86_USE_3DNOW
+ def_bool y
+@@ -359,17 +479,17 @@ config X86_P6_NOP
+
+ config X86_TSC
+ def_bool y
+- depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) || X86_64
++ depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MNATIVE || MATOM) || X86_64
+
+ config X86_CMPXCHG64
+ def_bool y
+- depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM
++ depends on X86_PAE || X86_64 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM || MNATIVE
+
+ # this should be set for all -march=.. options where the compiler
+ # generates cmov.
+ config X86_CMOV
+ def_bool y
+- depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
++ depends on (MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MJAGUAR || MK7 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MNATIVE || MATOM || MGEODE_LX)
+
+ config X86_MINIMUM_CPU_FAMILY
+ int
+--- a/arch/x86/Makefile 2014-06-16 16:44:27.000000000 -0400
++++ b/arch/x86/Makefile 2015-03-07 03:33:27.650843211 -0500
+@@ -92,13 +92,35 @@ else
+ KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=3)
+
+ # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
++ cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native)
+ cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
++ cflags-$(CONFIG_MK8SSE3) += $(call cc-option,-march=k8-sse3,-mtune=k8)
++ cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10)
++ cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona)
++ cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1)
++ cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1)
++ cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2)
++ cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2)
+ cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
+
+ cflags-$(CONFIG_MCORE2) += \
+- $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
+- cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
+- $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
++ $(call cc-option,-march=core2,$(call cc-option,-mtune=core2))
++ cflags-$(CONFIG_MNEHALEM) += \
++ $(call cc-option,-march=nehalem,$(call cc-option,-mtune=nehalem))
++ cflags-$(CONFIG_MWESTMERE) += \
++ $(call cc-option,-march=westmere,$(call cc-option,-mtune=westmere))
++ cflags-$(CONFIG_MSILVERMONT) += \
++ $(call cc-option,-march=silvermont,$(call cc-option,-mtune=silvermont))
++ cflags-$(CONFIG_MSANDYBRIDGE) += \
++ $(call cc-option,-march=sandybridge,$(call cc-option,-mtune=sandybridge))
++ cflags-$(CONFIG_MIVYBRIDGE) += \
++ $(call cc-option,-march=ivybridge,$(call cc-option,-mtune=ivybridge))
++ cflags-$(CONFIG_MHASWELL) += \
++ $(call cc-option,-march=haswell,$(call cc-option,-mtune=haswell))
++ cflags-$(CONFIG_MBROADWELL) += \
++ $(call cc-option,-march=broadwell,$(call cc-option,-mtune=broadwell))
++ cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell) \
++ $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic))
+ cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
+ KBUILD_CFLAGS += $(cflags-y)
+
+--- a/arch/x86/Makefile_32.cpu 2014-06-16 16:44:27.000000000 -0400
++++ b/arch/x86/Makefile_32.cpu 2015-03-07 03:34:15.203586024 -0500
+@@ -23,7 +23,15 @@ cflags-$(CONFIG_MK6) += -march=k6
+ # Please note, that patches that add -march=athlon-xp and friends are pointless.
+ # They make zero difference whatsosever to performance at this time.
+ cflags-$(CONFIG_MK7) += -march=athlon
++cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native)
+ cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,-march=athlon)
++cflags-$(CONFIG_MK8SSE3) += $(call cc-option,-march=k8-sse3,-march=athlon)
++cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10,-march=athlon)
++cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona,-march=athlon)
++cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1,-march=athlon)
++cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1,-march=athlon)
++cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2,-march=athlon)
++cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2,-march=athlon)
+ cflags-$(CONFIG_MCRUSOE) += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
+ cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
+ cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586)
+@@ -32,8 +40,15 @@ cflags-$(CONFIG_MCYRIXIII) += $(call cc-
+ cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686)
+ cflags-$(CONFIG_MVIAC7) += -march=i686
+ cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2)
+-cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom,$(call cc-option,-march=core2,-march=i686)) \
+- $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
++cflags-$(CONFIG_MNEHALEM) += -march=i686 $(call tune,nehalem)
++cflags-$(CONFIG_MWESTMERE) += -march=i686 $(call tune,westmere)
++cflags-$(CONFIG_MSILVERMONT) += -march=i686 $(call tune,silvermont)
++cflags-$(CONFIG_MSANDYBRIDGE) += -march=i686 $(call tune,sandybridge)
++cflags-$(CONFIG_MIVYBRIDGE) += -march=i686 $(call tune,ivybridge)
++cflags-$(CONFIG_MHASWELL) += -march=i686 $(call tune,haswell)
++cflags-$(CONFIG_MBROADWELL) += -march=i686 $(call tune,broadwell)
++cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell,$(call cc-option,-march=core2,-march=i686)) \
++ $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic))
+
+ # AMD Elan support
+ cflags-$(CONFIG_MELAN) += -march=i486
+
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